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19-101782
CITY OF Federal Way Centered on 0ppo tun ty January 10, 2020 Mr. Charles Moseley Barghausen Consulting Engineering, Inc. 18215 72nd Avenue South Kent, WA 98032 cmoseley@barghausen.com FILE Re: File #19-101782-UP; TECHNICAL REVIEW COMMENT LETTER Costco Gas Station, 35100 Enchanted Parkway South, Federal Way Dear Mr. Moseley: PUBLIC WORKS — TRAFFIC DIVISION Sarady Long, 253-835-2743, sarady.longQcitvoffederalway.corn CITY HALL 33325 8th Avenue South Federal Way, WA 98003-6325 (253) 835-7000 www. cityoffederalway.. com Jim Ferrell, Mayor The Public Works Traffic Division has finished its review of the November 22, 2019, submitted materials. The following technical review items must be address prior to Public Works approval. Revise the westerly driveway on South 352nd Street to provide a 14-foot through plus right (Thru+Rt) lane and a 16-foot entry lane. Please see the next page. 2. The westerly driveway on South 352nd Street must be improved to meet current standards. 3. Submit a Vehicle Turning Diagram for the right turn maneuver out of the internal gas station driveway, and the southbound right turn maneuver onto South 352nd Street. This diagram will show how the appropriate design vehicle leave the site without encroaching onto opposing traffic lanes, or mounting a curb. 4. Provide a channelization plan showing lane width, signage, striping, etc. to the city for review. Signage and channelization plans shall be per MUTCD. 5. The submitted plans must depict improvements and/or right-of-way dedication consistent with the approved right-of-way modification of June 19, 2019. Mr. Charles Moseley Page 2 of 2 January 10, 2020 r�•T�'r. W7pJQ Tvpp J CLOSING Once the revisions listed above are made, provide four paper copies of the site plan documents and narrative with the completed resubmittal form (enclosed). Pursuant to FWRC 18.05.080, if an applicant fails to provide additional information to the city within 180 days of being notified that such information is requested, the application shall be deemed null and void and the city shall have no duty to process, review, or issue any decisions with respect to such an application. Please do not hesitate to contact me at natalie_kami.enieci;i@citvoffederalway.com, or 253-835-2638, if you have questions regarding this letter or your application. Sincerely, Natalie Kamieniecki Associate Planner enc: Resubmittal Form 19-101782-00-UP Doc I.D. 80029 CITY OF Federal Way Centered on Opportunity September 18, 2019 Mr. Charles Moseley Barghausen Consulting Engineers, Inc. 18215 72nd Avenue South Kent, WA 98032 crnoselcv@haMhausen.com CITY HALL 33325 8th Avenue South Federal Way, WA 98003-6325 (253) 835-7000 www. cityoffederalway. com FILE Jim Ferrell, Mayor Re: File #19-101782-00-UP; FUEL FACILITY EXPANSION TECHNICAL REVIEW COMMENTS Costco Gas Station, 35100 Enchanted Parkway South, Federal Way Dear Mr. Moseley: City of Federal Way staff has reviewed the documents resubmitted August 20, 2019, related to the Costco Fuel Facility Expansion. City departments have provided the following comments that will need to be addressed prior to approval of your application, or as otherwise noted. Questions regarding the technical review comments should be addressed to the referenced staff representative. COMMUNITY DEVELOPMENT — PLANNING DIVISION Natalie Kamieniecki, 253-835-2638, natalie.kamieniecld{,cityoffederalway.com 0 Please note that the controller building location will need to be adjusted in order to meet front yard setback of 20 feet from the right-of-way tract or right-of-way dedication. PUBLIC WORKS — PUBLIC WORKS DEVELOPMENT SERVICES DIVISION Ann Dower, 253-835-2732, ann.dower@cityoffederab2y.com As a condition of the building permit, a Tract X agreement must be signed for future right- of-way on 16th Avenue South. The Tract X will consist of a 12-foot wide tract for the length of the Costco property frontage, which will remain private until such time as the city deems it necessary for frontage improvements on 16th Avenue South. The Tract X should be called out on the site plan. • No right-of-way dedication will be required on South 352°d Street. The five-foot dedication should be removed from the site plan. Mr. Charles Moseley Page 2of2 September 18, 2019 PUBLIC WORKS — PUBLIC WORKS TRAFFIC DIVISION Sarady Long, 253-835-2743, Barady.long@ciiyGffederalway.com The proposed development is expected to add about 54 weekday PM peak hour trips to the SR 161/South 352nd Street intersection and the site access. As such, the westerly driveway must be redesigned to minimize queuing on South 352nd Street and to facilitate on -site traffic circulation. Please provide queuing and LOS analysis at SR 161 and South 352nd Street intersection and at the westerly driveway on South 352nd Street. Per the Synchro queuing analysis performed by staff, the existing PM peak hour westbound left turn 95th percentile queue length at SR 161 /South 352nd Street intersection is approximately 261 feet. This westbound left turn queue exceeds the available 150-foot storage pocket. Field observation during the afternoon peak hour and PM peak hour verified that the westbound left turn queue will extend past the westerly driveway, thus blocking the eastbound left turn traffic into the site. Furthermore, the southbound right -turn traffic out of the westerly driveway typically encroaches on to the eastbound left turn lane, thus creating conflict with vehicles turning into the site. To address these issues, staff has recommended redesigning the driveway to include increasing the driveway throat length to a minimum of 50 feet, and modifying the existing standard curb cut to radius. Also, a left turn lane from the internal drive aisle into the fueling site, and other options should be explored in order to reduce the eastbound left -turn queues on South 352nd Street in to the site. CLOSING Once the revisions listed above are made, provide four paper copies of the site plan documents and narrative with the completed resubmittal form (enclosed). Pursuant to FWRC 18-05.080, if an applicant fails to provide additional information to the city within 180 days of being notified that such information is requested, the application shall be deemed null and void and the city shall have no duty to process, review, or issue any decisions with respect to such an application. Please do not hesitate to contact me at natahe.kamieniecki ci offederalwa .com, or 253-835-2638, if you have questions regarding this letter or your application. Sincerely, Natalie Kami 'ecki Associate Planner Enclosure c: Ann Dower, Senior Engineering Plans Reviewer Sarady Long, Senior Transportation Planning Engineer 19-101782-00-UP _ Doc. I.D. 79593 4ik CITY OF Federal Way July 2, 2019 Mr. Charles Moseley Barghausen Consulting Engineers, Inc. 18215 72nd Avenue South Kent, WA 98032 cmoseley@barghau se>n. com FILE COMMUNITY DEVELOPMENT DEPARTMENT 33325 8 b Avenue South Federal Way, WA 98003-6325 253-835-2607;Fax 253-835-2609 www.citvoffederalway.com RE: Permit #19-101782-00-UP; Fuel Facility Expansion; Costco Gas Station 35100 Enchanted Pkwy S, Federal Way Dear Mr. Moseley: City of Federal Way staff has reviewed the documents submitted on April 16, 2019, related to the Costco Fuel Facility Expansion. City departments have provided the following comments that will need to be addressed prior to approval of your application, or as otherwise noted. Questions regarding the technical review comments should be addressed to the referenced staff representative. PUBLIC WORKS — DEVELOPMENT. SERVICES DIVISION Ann Dower, 253-835-2732, ann.dower@cityoffederalway.com Vertical datum is required to be KCAS or NGVD 29. NAVD 88 must be converted. Revise the survey to accurately show the existing detention facilities, conveyance system, and discharge points. There are several discrepancies between the survey, the design plans, and the City's inspection maps that must be resolved. For example: ■ The largest of the existing detention facilities, along with its discharge point, must be shown on the survey. ■ The conveyance system showing where the south detention vault discharges is not shown on the survey or the design plans. • The north detention vault is shown much smaller on the survey than is shown on City system maps. Sheet 4 of the design plans shows it both sizes. This must be resolved. ■ The survey shows runoff from the Costco main building roof discharging directly into S. 352"d Street and the design plans don't include that part of the site. This is an important issue as the roof runoff must be detained. + Under the fuel canopy, the survey shows a storm drainage connection between existing CB 79 and the onsite storm system. The design plans show it as an existing sanitary sewer connection. The connection must be to sanitary sewer and must be revised if it is not. • In several random areas of the survey and design plans, the conveyance trails off with no particular discharge point or connection to the rest of the system. The conveyance system needs to be fully shown. 19-101782-00-UP Costco Fuel Expansion; Page 1 of 3 Doc ID 79049 To qualify for the 0.15 cfs Conservation Flow Control exception, the detention calculations must be revised so that the historic site condition 100-year peak flow can be compared to the un-detained, developed 100- year peak flow for the same surfaces. I believe that the surfaces have been selected accurately, and the historic site condition has been modeled correctly, but it appears that the developed site condition includes detention at a Conservation Flow Control level. The Public Works Department has reviewed the Right -of -Way (ROW) Modification Request, Number 19- 102337-00-SM, dated May 13, 2019. Based on Federal Way Revised Code (FWRC), the direction provided by the City Council, and the information provided, the following requirements and conditions of approval are associated with the decision made: 1. Provide a plan clearly depicting accurate locations of existing fuel island dispensers, underground storage tanks, walls, and parking so staff can fully evaluate the need for the ROW dedications on Enchanted Parkway S. and S. 352"d Street versus impact on the site. 2. Dedicate up to 12 feet of ROW on Enchanted Parkway S. frontage and up to five feet on S. 352nd Street frontage as directed by staff, based on staff evaluation. 3. Meet all current ADA standards within the public ROW. This may require reconstruction of existing ramps, driveways, etc. 4. Reconstruct the existing westernmost driveway on S. 352nd Street to reduce on -street queuing and provide safer entry from the westbound left -turn lane of S. 352"d Street which may include adding a 25' radius and turn lane into the fueling site. PUBLIC WORKS — TRAFFIC DIVISION Sarady Long, 253-835-2743, sarady.long(ii)dtyoffederalway.com 1. The westerly driveway on S. 352nd Street should be redesigned to minimize queuing on S. 352d Street and to facilitate on -site traffic circulation. This may include increasing driveway throat length to a minimum of 50' and modify the existing standard curb cut to a curb radius. Also, a left turn lane from the internal drive aisle into the fueling site and other options should be explored in order to reduce the eastbound left -turn queues on S. 352nd Street into the site. Please see the picture below for a potential improvement to the driveway. 19-101782-00-UP Costco Fuel Expansion; Page 2 of 3 Doc ID 79049 2. The internal driveway off of Enchanted Parkway S. between the Costco fueling facility and the Olive Garden restaurant should be redesigned to incorporate a mini -roundabout or other alternatives. Show street improvements and ROW dedication on SR 161 (Enchanted Parkway S.) and S. 352nd Street. The applicant/owner may submit an appraisal for the subject property. The Public Works Development Services Division will evaluate the submitted appraisal data to determine if the project actually meets the City's 25 percent threshold for requiring street frontage improvements and ROW dedication. 4. Traffic impact fee for the proposed eight (8) new vehicle fueling positions will be calculated at the time a completed building permit application is filed and must be paid prior to permit issuance. CLOSING Once the revisions listed above are made, provide four paper copies of the site plan documents and narrative with the completed resubmittal form (enclosed). Pursuant to FWRC 18.05.080, if an applicant fails to provide additional information to the city within 180 days of being notified that such information is requested, the application shall be deemed null and void and the City shall have no duty to process, review, or issue any decisions with respect to such an application. Please do not hesitate to contact me at natalie.kamieniecki@cityoffederalway.com, or 253-835-2638, if you have questions regarding this letter or your application. Sincerely, Natalie Kamieniecki Associate Planner Enclosure cc: Ann Dower, Senior Engineering Plans Reviewer Sarady Long, Sr. Trans Planning Engineer 19-101782-00-UP Costco Fuel Expansion; Page 3 of 3 Doc ID 79049 a� CITY OF , Federal Way Center-p-don Opportunity CITY HALL 33325 8th Avenue South Federal Way, WA 98003-6325 (253) 835-7000 www. cityoffederalway.. com Jim Ferrell, Mayor January 17, 2020 Barghausen Consulting Engineers, Inc. Charles Moseley 18215 72nd Ave S Kent, WA 98032 RE: Permit #19-102337-00-SM; COSTCO GAS STATION, 35100 ENCHANTED PKWY S., FEDERAL WAY Dear Mr. Moseley: The City has reviewed your third request for right-of-way modifications, dated November 22, 2019, associated with the Costco Gas Station Expansion. Because future development of Sound Transit and other properties in the area may necessitate an additional travel lane, the City cannot remove the Tract X set -aside requirement. The four -foot right-of-way dedication that was offered would be accepted if the applicant wishes to do so to place existing pedestrian and public transportation infrastructure fully within City right-of-way. The remaining eight feet would then be set aside as a Tract X. The driveway reconstruction and associated ADA requirements are currently being reviewed and will be worked through during plan review. Staff does not anticipate that any further modification will be necessary. If you have any questions, please contact Ann Dower at 253-835-2732 or at ann.dower@cityoffederalway.com. Sincer y, Desiree Winkler, P.E. Deputy Public Works Director c: Cole Elliott, P.E., Development Services Manager Sarady Long, Senior Transportation Planning Engineer Natalie Kamieniecki, Associate Planner Pf/ad df Amanda folder: 19-102337-SM Doc: 80053 Third response letter Alk CITY OF Federal Way DATE: July 1, 2019 TO: Natalie Kamieniecki, Associate Planner MEMORANDUM Public Works Department FROM: Sarady Long, Senior Transportation Planning Engineer SUBJECT: COSTCO GAS STATION - (19-101782-00-UP) 35100 ENCHANTED PKWY S The Public Works traffic Division has finished its review of the submitted materials. The following technical review items must be address prior to Public Works approval. 1. The westerly driveway on S 352 St. should be redesigned to minimize queuing on S 352"d St. and to facilitate on site traffic circulation. This may include increasing driveway throat length to a minimum of 50' and modify the existing standard curb cut to radius. Also, a left turn lane from the internal drive aisle into the fueling site and other options should be explored in order to reduce the eastbound left -turn queues on S 352"d St in to the site. Please see below potential improvements. -%w i f - i Q i I I 2. The internal driveway off of Enchanted Parkway S between Costco fueling facility and Olive Garden restaurant should be redesigned to incorporate a mini -roundabout or other alternatives. 3. Show street improvements and right-of-way dedication on SR 161 (Enchanted Parkway South) and S 352^d St. The applicant/owner may submit an appraisal for the subject property. The Public Works Development Services Division will evaluate the submitted appraisal data to determine if the project actually meets the City's 25 percent threshold for requiring street frontage improvements. 4. Traffic impact fee for the proposed eight (8) new vehicle fueling positions will be calculated at the time a completed building permit application is filed and must be paid prior to permit issuance. RECEIVED �. APR 16 2019 CITY OF CITY OF FEDERAL WAY Federal Way COMMUNITY DEVELOPMEN MASTER LAND USE APPLICATION DEPARTMENT OF COMMUNITY DEVELOPMENT 33325 8`h Avenue South Federal Way, WA 98003-6325 253-835-2607;Fax 253-835-2609 w w w. c i tyctf fede rat w a y. eo nt APPLICATION NO(S) 1 1� 10 I -� �'Z— _0 0 — v ( Date Apri 1 15 , 2 019 Project Name Costco #61 Fuel Facility Expansion Property Address/Location 35020 16 th Ave. S. Parcel Numbers) 219 2 6 0- 0 2 9 0 Project Description Refer to Project Narrative. PLEASE PRINT Type of Permit Required Annexation Binding Site Plan Boundary Line Adjustment Comp Plan/Rezone Land Surface Modification Lot Line Elimination Preapplication Conference Process I (Director's Approval) Process II (Site Plan Review) Process III (Project Approval) Process IV (Hearing Examiner's Decision) Process V (Quasi -Judicial Rezone) Process VI SEPA w/Project SEPA Only Shoreline: Variance/Conditional Use Short Subdivision Subdivision Variance: Commercial/Residential Required Information Commercial Enterprise (CE1 Zoning Designation CE Comprehensive Plan Designation Value of Existing Improvements Value of Proposed Improvements International Building Code (IBC): Group M Occupancy Type I I-B Construction Type Applicant Name:Barghausen Consulting Engineers, Address: 18215 72nd Ave. S . City/State: Kent, WA Zip: 98032 Phone: (425) 656-7406 Fax: Emit: crnoseley@barghausen . com Signature_ �%%„ 4 0f / Agent (if different than Applicant) Name: Address: City/State: Zip: Phone: Fax: Email: Signature: Owner Costco Wholesale c/o Kim Katz, Name: Director of Real Estate Address: 999 Lake Drive City/State: Issaquah, WA Zip: 98027 Phone: (425) 427-7540 Fax: Email: kkatz@costco. com Signature: \, L` Inc. Bulletin #003 — January 1, 2011 Page 1 of 1 k:\I-Iandouts\Master Land Use Application [� enRGunutPE N April 15, 2019 Hand Delivery Ms. Natalie Kamieniezki City of Federal Way Community Development Department 33325 8th Avenue South Federal Way, WA 98003 RE: Use Permit II - Site Plan Approval and Work Hour Variance Request Costco Fuel Facility Expansion 35020 16th Avenue South, Federal Way, Washington 98003 Costco Loc. No. 61/ Our Job No. 6076.11 Dear Ms. Kamieniezki: RECEIVED APR 16 2019 CITY OF FEDERAL WAY COMMUNFN DEVELOPMENT On behalf of our client Costco Wholesale (Costco), Barghausen Consulting Engineers Inc., is submitting the required application forms, plans, and supporting documents for a Use Permit II - Site Plan Approval and Work Hour Variance Request to allow for the expansion of the existing Costco fuel facility. The project includes the installation of four (4) new multi -product dispensers (MPDs) with an expansion of the overhead canopy, relocation of the controller enclosure and associated site improvements. The following items are enclosed for your review of the Use Permit II - Site Plan Approval: 1. One (1) signed copy of the Master Land Use Application 2. One (1) completed copy of the Submittal Requirements Checklist for Process II 3. One (1) check made to the order of the City of Federal Way for the amount of $4,807 for the Use Permit II - Site Plan Approval 4. Eight (8) copies of the Project Narrative 5. Two (2) copies of the current Title Report 6. Four (4) copies of the Site Photographs from each compass view 7. Eight (8) 24- by 36-inch copies of the Site Plan prepared by Barghausen Consulting Engineers, Inc. dated April 10, 2019 8. Eight (8) 24- by 36-inch copies of the Boundary and Topographic Survey prepared by Barghausen Consulting Engineers, Inc. dated March 18, 2019 9. Eight (8) 24- by 36-inch Tank and Piping Plan prepared by Barghausen Consulting Engineers, Inc. dated September 14, 2018 10. Eight (8) 24- by 36-inch Conceptual Electrical Site Plan prepared by Barghausen Consulting Engineers, Inc. dated September 14, 2018 BARGHAUSEN CONSULTING ENGINEERS, INC. 18215 72ND AVENUE SOUTH KENT, WA 98032 P) 425-251-6222 F) 425-251-8782 BRANCH OFFICES: TUMWATER, WA KLAMATH FALLS, OR LONG BEACH, CA ROSEVILLE, CA barghausen.com Ms. Natalie Kamieniezki City of Federal Way Community Development Department -2- April 15, 2019 11. Eight (8) 24- by 36-inch copies of the Engineering Plan packets, including: a. Preliminary Engineering Site Plan prepared by Barghausen Consulting Engineers, Inc. dated March 5, 2019 b. Preliminary Clearing and Grading Plan prepared by Barghausen Consulting Engineers, Inc. dated September 12, 2018 c. Preliminary Drainage, Grading, and Right -of -Way Plan prepared by Barghausen Consulting Engineers, Inc. dated March 5, 2019 d. Conceptual Water Quality Improvements Plan prepared Barghausen Consulting Engineers, Inc. dated September 12, 2018 e. Preliminary Landscape Plan prepared by Barghausen Consulting Engineers, Inc. dated March 5, 2019 12. Eight (8) 24- by 36-inch copies of the Building Elevations prepared by MG2 dated February 19, 2019 13. Four (4) copies of the Preliminary Technical Information Report prepared by Barghausen Consulting Engineers, Inc. dated April 11, 2019 14. Four (4) copies of the Traffic Impact Analysis prepared by Kittelson & Associates, Inc. dated January 15, 2019 15. Four (4) signed copies of the Traffic Concurrency Application 16. One (1) check made to the order of the City of Federal Way for the amount of $9,032 for the Traffic Concurrency Review 17. Four (4) 24- by 36-inch copies of the Lighting Plan prepared by T.E., Inc. dated February 2019 18. Four (4) copies of the Geotechnical Report prepared by Kleinfelder, Inc. dated October 16, 2018 The following items are enclosed for your review of the Work Hour Variance Request: 1. One (1) copy of the Work Hour Variance Request Application 2. One (1) Night Construction Narrative 3. One (1) Sound Exhibit 4. One check made to the order of the City of Federal Way for the amount of $141 for the Work Hour Variance Request Ms. Natalie Kamieniezki City of Federal Way Community Development Department -3- April 15, 2019 We believe that the enclosed plans and technical documents make up a complete application. Should you have any questions or require additional documentation, please contact me at (425) 251-6222 or by email at cmoseley@barghausen.com. Thank you for your assistance with this project. Sincerely, Charles Moseley Senior Project Mana er CM/lb 6076c. 1 40.docx enc: As Noted cc: Ms. Kim Katz, Costco Wholesale (email w/enc) Mr. John Ellingsen, Ellingsen & Company, Inc. (Google Drive w/enc) Mr. Jay S. Grubb, Barghausen Consulting Engineers, Inc. Mr. Chris S. Ferko, Barghausen Consulting Engineers, Inc. Mr. Sean Anderson, Barghausen Consulting Engineers, Inc. Ms. Mettie Brasel, Barghausen Consulting Engineers, Inc. CITY OF FEDERAL WAY COMMUNITY DEVELOPMENT DEPARTMENT DEVELOPMENT REVIEW COMMITTEE TRANSMITTAL DATE: August 22, 2019 TO: Ann Dower, Senior Engineering Plans Reviewer Sarady Long, Senior Traffic Engineer Brian Asbury, Lakehaven Water & Sewer District Sean Nichols, South King Fire & Rescue Plans Reviewer FROM: Natalie Kamieniecki, Associate Planner FILE NU14BER (s) : PROJECT NAME: PROJECT ADDRESS: ZONING DISTRICT: Please Provide Comments via email 19-101782-00-UP COSTCO GAS STATION 35100 ENCHANTED PKWY S CE PROJECT DESCRIPTION: Use Process II request to expand the fueling canopy by approximately 3,300 square feet, an addition of four (4) new multi -product dispensers, and relocation of the controller enclosure from the existing location in the SW corner of the fueling facility to the NW LAND USE PERMITS: Use Process II PROJECT CONTACT: CHARLES MOSELEY BARGHAUSEN CONSULTING ENGR, INC MATERIALS SUBMITTED: Responses to First Technical Comment Letter Plan Set • Preliminary Site Plan • Preliminary Grading and Drainage Plan • Preliminary Drainage, Grading and Right-of-way Plan ■ Conceptual Water Quality Improvements Plan • Site Cross Sections Topographic Survey Preliminary Technical Information Report RESUBMITTED ��r� r�^+ DEPARTMENT OF COMMUNITY DEVELOPMENT G 201 33325 8t' Avenue South Federal Way, WA 98003-6325 CITY OF CPTY rY �F FEDERAL Wr�� � OF , i3EVEL YY i 253-835-2607; Fax 253-835-2609 FederalWay www.citvoffederaiwgy.com RESUBMITTAL INFORMATION This completed form MUST accompany all resubmittals. Additional or revised plans or documents foran active project will notbe accepted unless accompanied by this completed form. Changes to dra wings must be clouded. Applicants will be required to affix the City's date stamp on each page of resubmitted plans and to collate loose plans into existing plan sets. You are encouraged to contact the Permit Center prior to submitting if you are not sure about the number of copies required. Project Number: t%, a - A__ 0 \ I— ar- 3 - 0 Project Name: Project Addre �\ SS: 10 �` Q < Project Contact: L L AQ% _1--AQ-5zJ\ Phone: 14a-6 c'�tl - E-mail r RESUBMITTED ITEMS: �p ,� Resubmittal Requested by: r j �l r�'� Letter Dated: � 1 � I r� att Memberp) r OFFICE USE ONLY RESUB #.- Distribution Date. �0 Dept/Div Name # Description uildin v Plannin �s { V ) 5 arG /II�J s PW Fire Other Bulletin # 129 — September 24, 2018 Page 1 of 2 kAHandouts\Resubmittal Information BARGUAUSEN RESUBMITTED August 19, 2019 AUG 2 0 2019 HAND DELIVERY ) C'iYOFFS!'V,4y COP,, 107Y CcVc�DPNI T Natalie Kamieniecki Associate Planner City of Federal Way Community Development Department 33325 8th Avenue South Federal Way, WA 98003 Office: (253) 835-2700 RE: Responses to Comments Costco - Fuel Facility Expansion 35100 Enchanted Parkway, Federal Way, Washington 98003 Permit No. 19-101782-00-UP Costco Loc. No. 061 / Our Job No. 6076 Dear Natalie: We have revised the plans and technical documents for the above -referenced project in accordance with your comment letter dated July 2, 2019. Enclosed are the following documents for your review and approval: 1. Four (4) copies of the Preliminary Technical Information Report prepared by Barghausen Consulting Engineers, Inc. revised on August 7, 2019 2. Four (4) copies of the Revised Civil Plan Sets, including: a. Preliminary Site Plan prepared by Barghausen Consulting Engineers, Inc. dated July 31, 2019 b. Preliminary Grading and Drainage Plan prepared by Barghausen Consulting Engineers, Inc. dated May 3, 2019 c. Preliminary Drainage, Grading, and Right -of -Way Plan prepared by Barghausen Consulting Engineers, Inc. dated August 1, 2019 d. Conceptual Water Quality Improvements Plan prepared by prepared by Barghausen Consulting Engineers, Inc. dated August 1, 2019 e. Site Cross Sections prepared by prepared by Barghausen Consulting Engineers, Inc. dated August 1, 2019 3. Four (4) copies of the updated Boundary and Topographic Survey prepared by Barghausen Consulting Engineers, Inc. dated August 7, 2019 BARGHAUSEN CONSULTING ENGINEERS, INC 18215 72ND AVENUE SOUTH KENT, WA98032 P) 425-251-6222 F) 425-251-8782 BRANCH OFFICES: TUMWATER, WA KLAMATH FALLS, OR LONG BEACH, CA ROSEVILLE, CA barghausen.com Natalie Kamieniecki Associate Planner City of Federal Way Community Development Department -2- August 19, 2019 The following outline provides each of your comments in italics exactly as written, along with a narrative response describing how each comment was addressed: PUBLIC WORKS — DEVELOPMENT SERVICES DIVISION Ann Dower, 253-835-2732, ann.dower@cityoffederalway com Vertical datum is required to be KCAS or NGVD 29. NAVD 88 must be converted. Response: The survey has been converted to NGVD 29. In addition, the proposed grading on the civil plans has been updated to reflect the latest datum. Revise the survey to accurately show the existing detention facilities, conveyance system, and discharge points. There are several discrepancies between the survey, the design plans, and the City's inspection maps that must be resolved. For example: The largest of the existing detention facilities, along with its discharge point, must be shown on the survey. Response: The existing detention facilities have been added to the survey based on available as -built plan information. • The conveyance system showing where the south detention vault discharges is not shown on the survey or the design plans. Response: The final discharge location for the south detention vault is now shown on the survey, based on available as -built plans. • The north detention vault is shown much smaller on the survey than is shown on City system maps. Sheet 4 of the design plans shows it both sizes. This must be resolved. Response: The vaults have been drawn per available as -built plans. The smaller rectangle shown on Sheet 4 is actually an access lid and not a separate vault itself. • The survey shows runoff from the Costco main building roof discharging directly into S. 352nd Street and the design plans don't include that part of the site. This is an important issue as the roof runoff must be detained. Response: Roof runoff does not discharge to the existing pavement. Roof drain connections have been drawn per available as -built plans and are shown connecting directly to the existing drainage system. Under the fuel canopy, the survey shows a storm drainage connection between existing CB 79 and the onsite storm system. The design plans show it as an existing sanitary sewer connection. The connection must be to sanitary sewer and must be revised if it is not. Response: The survey has been corrected to accurately show the under canopy connection as sanitary sewer. In addition, the connection to the existing sanitary sewer main is now shown per available as -built plans. Natalie Kamieniecki Associate Planner City of Federal Way Community Development Department -3- August 19, 2019 • In several random areas of the survey and design plans, the conveyance trails off with no particular discharge point or connection to the rest of the system. The conveyance system needs to be fully shown. Response: The existing conveyance system connects to the entire development. Areas on the Costco property not drawn previously have been corrected. However, the property's drainage system connects to the entire development and showing the entire drainage network would require survey and utility locates well outside the scope of the project. To qualify for the 0.15 cfs Conservation Flow Control exception, the detention calculations must be revised so that the historic site condition 100-year peak flow can be compared to the un- detained, developed 100- year peak flow for the same surfaces. I believe that the surfaces have been selected accurately, and the historic site condition has been modeled correctly, but it appears that the developed site condition includes detention at a Conservation Flow Control level. Response: The calculations for the developed condition have been modeled using the 701 inflows for 15-minute time step 100-year flow per the provided email correspondence from the Department of Ecology. In addition, the total amount of target impervious surface for the project has been reduced to 0.191 acres from 0.367 acres. In the first submittal, utility trenching and maintenance areas were incorrectly classified as replaced impervious surface. The 0.15 CFS Conservation Flow Control exception is still met when the revised impervious surface area is modeled. The Public Works Department has reviewed the Right -of -Way (ROW) Modification Request, Number 19- 102337-00-SM, dated May 13, 2019. Based on Federal Way Revised Code (FWRC), the direction provided by the City Council, and the information provided, the following requirements and conditions of approval are associated with the decision made: 1. Provide a plan clearly depicting accurate locations of existing fuel island dispensers, underground storage tanks, walls, and parking so staff can fully evaluate the need for the ROW dedications on Enchanted Parkway S. and S. 352`d Street versus impact on the site. 2. Dedicate up to 12 feet of ROW on Enchanted Parkway S. frontage and up to five feet on S. 352`d Street frontage as directed by staff, based on staff evaluation. 3. Meet all current ADA standards within the public ROW. This may require reconstruction of existing ramps, driveways, etc. 4. Reconstruct the existing westernmost driveway on S. 352`d Street to reduce on -street queuing and provide safer entry from the westbound left -turn lane of S. 352`d Street which may include adding a 25 radius and turn lane into the fueling site. Response: On August 6, 2019, we submitted a response to the right-of-way modification waiver approval requesting modification of the conditions of approval. Natalie Kamieniecki Associate Planner City of Federal Way Community Development Department -4- August 19, 2019 PUBLIC WORKS — TRAFFIC DIVISION Saradw Long. 253-835-2743, sarady.Iona@cittraifederalway.com 1. The westerly driveway on S. 352rd Street should be redesigned to minimize queuing on S. 352rd Street and to facilitate on -site traffic circulation. This may include increasing driveway throat length to a minimum of 50' and modify the existing standard curb cut to a curb radius. Also, a left turn lane from the internal drive aisle into the fueling site and other options should be explored in order to reduce the eastbound left -turn queues on S. 352nd Street into the site. Please see the picture below for a potential improvement to the driveway. 75 !JR., 1 H Response: The project is anticipated to address existing queuing and congestion issues occurring at the fuel facility and westernmost driveway entrance along South 352nd Street. Additional modifications to widen the drive -aisle to provide a left -turn pocket and pass -by lane will negatively impact the site through loss of parking and are not necessary. The findings in the Trip Generation and Queuing Summary dated January 15, 2019 prepared by Kittelson and Associates, Inc. determined that the existing fuel facility queuing area is sufficient to contain the anticipated vehicle stacking after installation of the added dispensers. This is due to the minor increase in trip generation relative to the increased efficiency in member fuel purchases resulting from the installation of additional dispensers. As a result, peak vehicle queues will be less extreme and dissipate much quicker. Additional recommended drive -aisle modifications to provide directional arrows and striping at the fuel facility exit are also unnecessary. The pavement widths are currently sufficient to allow two lanes of traffic to use the exit onto the main drive -aisle. 2. The internal driveway off of Enchanted Parkway S. between the Costco fueling facility and the Olive Garden restaurant should be redesigned to incorporate a mini -roundabout or other alternatives. Response: The project scope is limited to the expansion of the fuel facility and does not include any other modifications to on -site parking or circulation. The trip generation resulting from the project is anticipated to be minor and does not have a significant impact to current on -site access or circulation patterns occurring within the greater commercial development Natalie Kamieniecki Associate Planner City of Federal Way Community Development Department -5- August 19, 2019 area. A modification to the noted internal driveway off of Enchanted Parkway is not required for the project. Additionally, Costco does not own or control all of the property required to modify the noted internal driveway. 3. Show street improvements and ROW dedication on SR 161 (Enchanted Parkway S.) and S. 352rd Street. The applicant/owner may submit an appraisal for the subject property. The Public Works Development Services Division will evaluate the submitted appraisal data to determine if the project actually meets the City's 25 percent threshold for requiring street frontage improvements and ROW dedication. Response: The City issued a right-of-way modification waiver approval letter on June 19, 2019 and no street improvements are required for the project along SR 161 or South 352nd Street. The right-of-way modification waiver included a condition of approval that required a dedication of right-of-way along the two noted street frontages. The requested dedication of driveway along the two frontages is not necessary for the project and will impact the existing property resulting in non -conforming situations that do not currently exist, as described in the Responses to Conditions of Approval Letter dated August 5, 2019. 4. Traffic impact fee for the proposed eight (8) new vehicle fueling positions will be calculated at the time a completed building permit application is filed and must be paid prior to permit issuance. Response: We acknowledge that a traffic impact fee will be calculated when a completed building permit application is filed and must be paid prior to permit issuance. We believe that the above responses, together with the enclosed revised plans and technical documents, address all of the comments in your letter dated July 2, 2019. Please review and approve the enclosed at your earliest convenience. If you have questions or need additional information, please do not hesitate to contact me at this office. Thank you. Sincerely, I Charles Mcsele Senior Project Manag CM/lb 6076c.144.doc enc: As Noted cc: Ms. Kim Katz, Costco Wholesale Corporation Mr. John Ellingsen, Ellingsen & Company Mr. Jay S. Grubb, Barghausen Consulting Engineers, Inc. Mr. Chris S. Ferko, Barghausen Consulting Engineers, Inc. Mr. Sean Anderson, Barghausen Consulting Engineers, Inc. Ms. Mettie Brasel, Barghausen Consulting Engineers, Inc. ST+�EL R1VES>_P March 17, 2020 VIA HAND DELIVERY Ms. Desiree Winkler Deputy Public Works Director City of Federal Way Public Works Department 33325 8th Avenue South Federal Way, WA 98003 Office: (253) 835-2700 Re: Costco Fuel Facility Expansion 35100 Enchanted Parkway (Permit No. 19-102337-00-SM) Dear Ms. Winkler: 600 University Street, Suite 3600 Seattle, WA 98101 T. 206.624.0900 F. 206.386.7500 www.stoel.com PATRICK.J. MULLANEY D. 206.386.7532 patrick.mullaney@stoel.com We represent Costco Wholesale Corporation ("Costco") in conjunction with the expansion of its Federal Way fuel facility. It is our understanding that the City is requesting a 12-foot right- of-way dedication along Costco's approximately 460-foot, Enchanted Parkway frontage, ostensibly to accommodate future Sound Transit light rail improvements. Costco would like to schedule a meeting or teleconference at your earliest convenience to discuss the dedication issue. Costco cannot support providing the City with this requested dedication, which would impact a large existing retaining wall, because i) the impacts of Costco's fuel facility expansion lack nexus and proportionality with the requested dedication; ii) to date, it is unclear Sound Transit will require property along Costco's frontage for its light rail improvements; iii) Costco has concerns regarding future maintenance of the retaining wall if it were transferred to public ownership; iv) the requested dedication creates setback and other non -conformities on Costco's property; and v) removal of the retaining wall could potentially damage Costco's remaining property. If Sound Transit does require Costco's property in the future, it can acquire it at the time that the property is needed, just as it must do with many other property owners along its intended route. 105465515.2 0206518-00001 March 17, 2020 Page 2 While federal and state law allows local governments to mitigate the impacts of proposed development, in doing so, government has the burden of demonstrating that the mitigation is reasonably related to identified impacts of the proposed development. These requirements are called "nexus" and "proportionality." When imposing mitigation, government may not go beyond mitigation related to the development's impacts and require a permit applicant to fix societal problems or confer societal benefits. This concept is known as the "unconstitutional conditions doctrine." In this case, Costco's fuel facility expansion does not affect its Enchanted Parkway frontage, and because of Costco's membership requirement, Costco's traffic study shows that the expansion will not generate a significant number of new vehicle trips. Moreover, it is highly unlikely that patrons of the fuel facility would rely on public transportation to get there. While it is understandable that the City would like to facilitate future public transportation improvements, in this case, there is simply no nexus between the requested dedication and any identified impact of the development. Moreover, the requested dedication is disproportionate to the project impacts in that it requests over 5,500 square feet of property and threatens potential damage to the remainder of Costco's property if the large retaining wall were removed. There are three principal federal cases that define the limit between a legitimate exercise of police power and an unlawful regulatory taking: Nollan v. California Coastal Comm'n, 483 U.S. 825, 107 S.Ct. 3141 (1987); Dolan v. City of Tigard, 512 U.S. 374, 114 S.Ct. 2309 (1994); and Koontz v. St. Johns River Water Management District, 570 U.S. 595, 604-07, 133 S. Ct. 2586, 2594-96, 186 L. Ed. 2d 697 (2013). Washington law follows these federal cases. City of Federal Way v. Town and Country Real Estate LLC 161 Wn. App. 17, 252 P.3d 382 (2011) (applying Nollan/Dolan to impact fees); Burton v. Clark County, 91 Wn. App. 505, 958 P.2d 343 (1998) (county condition requiring connecting road across a three -lot short plat was invalidated); Benchmark Land Co. v. City of Battle Ground, 94 Wn. App. 537, 548, 972 P.2d 944 (1999) (invalidating conditions requiring frontage improvements to a street that would not provide access to the proposed development); Cedar River Water & Sewer Dist. v. King County, 178 Wn.2d 763, 315 P.3d t065 (2013) (SEPA substantive mitigation subject to nexus/proportionality); and Olympic Stewardship Found. v. W. Washington Growth Mgmt. Hearings Bd., 166 Wn. App. 172, 199, 274 P.3d 1040, 1053 (2012) ("[T]he policies and regulations adopted under GMA must comply with the nexus and rough proportionality limits the United States Supreme Court has placed on governmental authority to impose conditions on development applications."). A 2019 Washington case, Church of Divine Earth v. City of Tacoma, explains the 105465515.2 0206518-00001 March 17, 2020 Page 3 Nollan/Dolan doctrine as follows: A permit condition for an uncompensated dedication of land is unlawful where it fails to fulfill the requirements laid out in two formative cases on unconstitutional conditions, Nollan v. California Coastal Commission, and Dolan v. City of Tigard. Taken together, the Nollan and Dolan cases create a framework for analyzing the constitutionality of a permit condition involving an uncompensated land dedication. First, the government must show the development will create or exacerbate an identified public problem. Second, the government must show the proposed condition will tend to solve or alleviate the public problem. Finally, the government must show that the condition is roughly proportional to the development's anticipated impact. In fulfilling these requirements, the government must, to some degree, quantify its findings, and cannot rely on speculation regarding the impacts or mitigation of them.' RCW 82.02.020 also incorporates nexus and proportionality requirements and limits government requests for dedications to those "which the [city] can demonstrate are reasonably necessary as a direct result of the proposed development ... to which the dedication of land ... is to apply. 11 2 For purposes of RCW 82.02.020, the Washington Supreme Court has made clear that "development conditions must be tied to a specific, identified impact of a development on a community" and that "[t]he plain language of the statute does not permit conditions that are reasonably necessary for all development, or any potential development." Rather, the statute specifically requires that the condition be "reasonably necessary as a direct result of the proposed development." Citizens' Alliance for Property Rights v. Sims, 145 Wn. App. 649, 665,187 P.2d 786 (2008) (emphasis in original). Costco appreciates the work that City staff has done on its fuel expansion project, and Costco hopes that the parties can continue their cooperative relationship. Costco representatives are available at your earliest convenience to see if the parties can resolve the dedication issue. Church of Divine Earth v. Cily of Tacoma, 194 Wn.2d 132, 138, 449 P.3d 269, 272 (2019) (internal citations omitted) (remand for trial required on whether City's request for street dedication constituted a compensable taking); see also. Unlimiled v. Kitsap County, 50 Wash. App. 723, 727, 750 P.2d 651, 653 (1988) (government's request for a commercial easement and road dedication as a condition of a rezone and planned unit development was found to be an unconstitutional taking). In Unlimited v. Kitsap County, the court explained: "A property interest can be exacted without compensation only upon a proper exercise of government police power. Such power is properly exercised in zoning situations where the problem to be remedied by the exaction arises from the development under consideration, and the exaction is reasonable and for a legitimate public purpose. Unless these requirements are met, the exaction is an unconstitutional taking." '- Emphasis added. 105465515.2 0206518-00001 March 17, 2020 Page 2 Sincerely, Patrick J. Mullaney (e-signature) Patrick J. Mullaney 105465515.2 0206518-00001 CITY OF FEDERAL WAY COMMUNITY DEVELOPMENT DEPARTMENT DEVELOPMENT REVIEW COMMITTEE TRANSMITTAL DATE: April 19, 2019 TO: Cole Elliott, Development Services Manager Rick Perez, City Traffic Engineer Brian Asbury, Lakehaven Water & Sewer District Chris Cahan, South King Fire & Rescue FROM: Natalie Kamieniecki, Associate Planner FOR DRC MTG. ON: Please provide technical comments via email FILE NUMBER(s): 19-101782-UP II 19-101784-Work Hour Variance RELATED FILE NOS.: 18-104024-PC PROJECT NAME: COSTCO GAS STATION PROJECT ADDRESS: 35100 ENCHANTED PKWY S ZONING DISTRICT: CE PROJECT DESCRIPTION: Use Process II request to expand the fueling canopy by approximately 3,300 sq ft, an addition of four (4) new muli-product dispensers, and relocation of the controller enclosure from the existing location in the SW corner of the fueling facility to the NW LAND USE PERMITS: Process II Land Use Approval PROJECT CONTACT: CHARLES MOSELEY BARGHAUSEN CONSULTING ENGR, INC MATERIALS SUBMITTED: Project Narrative, Title Report, Site Photos, Site Plan, Boundary and Topographic Survey, Tank and Piping Plan, Conceptual Electrical Site Plan, Engineering Plan Packets, Building Elevations, Preliminary Technical Information Report, Traffic Impact Analysis, Traffic Concurrency Application, Lighting Plan, Geotechnical Report, Work Hour Variance. *If you did not receive one of the above listed items in your review package please do not hesitate to contact me to obtain a copy. CITY OF FEDERAL WAY COMMUNITY DEVELOPMENT DEPARTMENT DEVELOPMENT REVIEW COMMITTEE TRANSMITTAL DATE: March 17, 2020 TO: Ann Dower, Senior Engineering Plans Reviewer Sarady Long, Senior Transportation Planning Engineer FROM: Natalie Kamieniecki, Associate Planner' FOR DRC MTG. ON: Please provide comments via email FILE NUMBER(s): 19-101782-UP RELATED FILE NOS.: PROJECT NAME: COSTCO GAS STATION PROJECT ADDRESS: 35100 ENCHANTED PKWY S ZONING DISTRICT: CE PROJECT DESCRIPTION: Use Process II request to expand the fueling canopy by approximately 3,300 sq ft, an addition of four (4) new muli-product dispensers, and relocation of the controller enclosure from the existing location in the SW corner of the fueling facility to the NW LAND USE PERMITS: PROJECT CONTACT: CHARLES MOSELEY BARGHAUSEN CONSULTING ENGR, INC MATERIALS SUBMITTED: Resubmittal Form Response Narrative Street Modification Response Letter from Stoel Rives, LLP Revised Plan Set REEUE%'!I�777'!D CITY OF _ �` � MAR 10 2120 WauFD1EWAFedaraI }Nrrr rCMENT DEPARTMENT OF COMMUNITY DEVELOPMENT 33325 8'h Avenue South Federal Way, WA 98003-6325 253-835-2607; Fax 253-835-2609 �k-ww.eiiyo frederai way. RESUBMITTAL INFORMATION This completed form MUST accompany all resubmittals. Additional or revised plans or documents for an active project will not be accepted unless accompanied by this completed form. Changes to drawings must be clouded. Applicants will be required to affix the city's date stamp on each page of resubmitted plans and to collate loose plans into existing plan sets. You are encouraged to contact the Permit Center prior to submitting if you are not sure about the number of copies required. Project Number: 1 _9 - 1 0 1 7 8 2 - 0 0- U P Project Name: Costco Fuel Facility Expansion Project Address: 35100 Enchanted Parkway S . Project Contact: Charles Moseley, Senior Project Manager Phone: 425-251-6222 RESUBMITTED ITEMS: Email cmoseley@barghausen.com # of Copies DETAILED Description of Item 1 Comment Response Letter 4 Updated Site/Civil Plan Set 4 Updated Landscape Plans Resubmittal Requested by: Natalie Kamieniecki Letter Dated: 01 / 10 / 20 (Staff Member) OFFICE USE ONL Y RESUB A- Distribution Date..; 0 By.• (-)2=== Dept/Div Name # Description uildin Plannin PW Fire Other Bulletin #129 — September 24, 2018 Page 1 of I k:\Handouts\Resubmittal Information CITY OF FEDERAL WAY CONNIMITY DEVELOPMENT DEPARTMENT DEVELOPMENT REVIEW COMMITTEE TRANSMITTAL DATE: November 26, 2019 TO: Ann Dower, Senior Engineering Plans Reviewer Sarady Long, Senior Transportation Planning Engineer Brian Asbury, Lakehaven Water & Sewer District Chris Cahan, South King Fire & Rescue FROM: Natalie Kamieniecki, Associate Planner FOR DRC MTG. ON: Please provide technical comments or conditions of approval via email FILE NUMBER(s): 19-101782-UP RELATED FILE NOS.: 18-104024-PC PROJECT NAME: COSTCO GAS STATION PROJECT ADDRESS: 35100 ENCHANTED PKWY S ZONING DISTRICT: CE PROJECT DESCRIPTION: Use Process II request to expand the fueling canopy by approximately 3,300 sq ft, an addition of four (4) new muli-product dispensers, and relocation of the controller enclosure from the existing location in the SW corner of the fueling facility to the NW LAND USE PERMITS: Use Process II PROJECT CONTACT: CHARLES MOSELEY BARGHAUSEN CONSULTING ENGR, INC MATERIALS SUBMITTED: Project Narrative Responses to Technical Review Comments Responses to Right -of -Way Modification Comments Supplemental Traffic Analysis Site Plan Preliminary Plan Set **If you did not receive a document on the above list and would like a copy please let me know** RESUBMITTED NOV 12 2019 DEPARTMENT OF COMMUNITY DEVELOPMENT 33325 81h Avenue South MY OF FEDERAL WAY Federal Way, WA 98003-6325 CITY OF COMMUN" DEVELOPMENT 253-835-2607; Fax 253-835-2609 Federal Way www.cityoffedcralway.com RESUBMITTAL INFORMATION This completed form MUST accompany all resubmittals. Additional or revised plans or documents for an active project will not be accepted unless accompanied by this completed form. Changes to drawings must be clouded. Applicants will be required to affix the city's date stamp on each page of resubmitted plans and to collate loose plans into existing plan sets. You are encouraged to contact the Permit Center prior to submitting if you are not sure about the number of copies required. Project Number: 1 9 _ 1 0 1 7 8 2 _ _ u P Project Name: Costco Fuel Facility Expansion Project Address: 35100 Enchanted Parkway S . , Federal Way Project Contact: Charles Moseley Phone: 425-251-6222 RESUBMITTED ITEMS: Email cmoseley@barghausen.com # of Copies DETAILED Description of Item 4 Project Narrative 4 Site Plan 4 Civil Plan Set 4 Supplemental Traffic Analysis Resubmittal Requested by: Natalie Kamieniecki Letter Dated: 09 / 18 / 19 (8taff Memberj OFFICE USE ONL%Y RESUB #.• Distribution Date., ��I �1 By. Dept/Div Name # Description ,-Buildin Planning 9# {14 S, I1 i, LP,IP&-- PW Ito- . Fire Other Bulletin #129 - September 24, 2018 Page 1 of l kMandouts\Resubmittal Information BARGWAUS�N Desiree Winkler, P.E. Deputy Public Works Director City of Federal Way City Hall 33325 8th Avenue South Federal Way, WA 98003-6325 August 5, 2019 HAND DELIVERY (253) 835-2700 U"Ai7Tn AUG 0 " -n 0 s' j CITY CF FEDERAL wAy COMMUNITY 0EVEL0r ,Mt,-jNf RE: Responses to Conditions of Approval Costco Gasoline - Fuel Facility Expansion 35100 Enchanted Parkway South, Federal Way, Washington 98003 Permit No. 19-102337-00-SM Costco Loc. No. 061 / Our Job No. 6076 Dear Ms. Winkler: On behalf of Costco Wholesale, Barghausen Consulting Engineers, Inc., requests the following amendments to the Conditions of Approval contained in the Right -of -Way Waiver issued June 19, 2019. Enclosed is the following document for your review and approval: 1. Site Plan prepared by Barghausen Consulting Engineers, Inc. dated August 1, 2019 The following outline provides each of your comments in italics exactly as written, along with a narrative response describing how each comment was addressed: Requirements / Conditions of Approval 1) Provide a plan clearly depicting accurate locations of existing fuel island dispensers, underground storage tanks, walls, and parking so that staff can fully evaluate the need for the right-of-way dedications on Enchanted Parkway S and S 352`d St versus impact on the site. Response: The enclosed site plan shows the project, which includes the current fuel facility with an additional row of dispensers into the queue along with the relocated controller enclosure, existing vent stacks and vapor recovery unit, underground storage tank field, and adjacent parking. The amended right-of-way boundaries, as described in the conditions of approval, are shown on the site plan and demonstrate that the proposed dedications would impact existing equipment on Costco's property and result in several nonconforming situations, limiting modifications to the fuel facility that are intended to improve the performance of the use on site, as discussed in more detail below. 2) medicate up to 12 rcct of right -Of li✓ayvn uriiiairt2d Parkway S {outage gird lip tv S feet on S 352`d Street frontage as directed by staff, based on staff evaluation. Response: We request this condition be removed because the project does not include or require any improvements to the Enchanted Parkway or South 352nd Street frontages. Additionally, the dedications along these frontages would impact the feasibility of the fuel facility expansion and result in a non -conforming situation for the overall site. Specifically, a 12-foot dedication along Enchanted Parkway would require a relocation of the corgi I�er BARGHAUSEN CONSULTING ENGINEERS, INC. 18215 72ND AVENUE SOUTH KENT, WA 98032 P) 42S-2S1-6222 F) 425-251-8782 BRANCH OFFICES. TUMWATER, WA KLANIATH FALLS, OR LONG BEACH, CA ROSEVILLE, CA SAN DIEGO, CA barghausen.com Desiree Winkler, P.E. Deputy Public Works Director City of Federal Way City Hall -2- August 5, 2019 Q*v, a: -tv '1)11 enclosure from the current la out because it would be located within the 20-foot and Due to existing site constraints, there are very few options to relocate the controller enclosure without requiring additional site improvements that are not currently included in the project scope, including a loss of parking and possibly relocating existing equipment associated with the operation of the fuel facility. Dedicating five (5) feet of frontage along South 352nd Street would entirely eliminate the required perimeter landscaping along the parking lot area; the site would no longer meet the minimum 5-foot landscape buffer requirement for parking areas adjacent to rights -of -way described in FWMC Section 19.125.060(9)(a), resulting in a non- conforming situation. As demonstrated above, the dedication of a right-of-way along these two frontages would have significant impacts on the project and Costco's property and are not required as a result of the project. 3) Meet all current ADA standards within the public right-of-way. This may require reconstruction of existing ramps, driveways, etc. Response: We request this condition be removed because the project scope does not include any improvements within the public right-of-way or associated pedestrian infrastructure. Additionally, WSDOT recently completed upgrades to the ADA ramp at the intersection of South 352nd Street and Enchanted Parkway_ 4) Reconstruct the existing westernmost driveway on S 352d Street to reduce on -street queuing and provide safer entry from the westbound left -turn lane of S 352`d St. This may include adding a 25' radius and turn lane into the fueling site. Response: We request this condition be removed from the right-of-way waiver determination. Modifications to improve the capacity and internal circulation of the westernmost driveway access to South 352nd street are not required public improvements subject to Section 19.135.030 of the Federal Way Revised Code. Additionally, the driveway design and circulation impact is being evaluated as part of the Permit No. 19-101782-00-UP review for the fuel expansion project. We believe that the above responses, together with the enclosed site plan, address all of the comments in your letter dated July 2, 2019. Please review and approve the enclosed at your earliest convenience. If you have questions or need additional information, please do not hesitate to contact me at this office. Thank you. Sincerely, Charles Moseley Senior Project Manager !`M11&, rrun-c,. Inc d %, II u L V I 'J I YJ. ol.I enc: As Noted cc: Ms. Kim Katz, Costco Wholesale Corporation Mr. John Ellingsen, Ellingsen & Company Mr. Jay S. Grubb, Barghausen Consulting Engineers, Inc. Mr. Chris S. Ferko, Barghausen Consulting Engineers, Inc. Mr. Sean Anderson, Barghausen Consulting Engineers, Inc. November 22, 2019 HAND DELIVERY (253) 835-2700 Natalie Kamieniecki Associate Planner City of Federal Way Community Development Department 33325 8th Avenue South Federal Way, WA 98003 RE: Responses to Technical Review Comments Costco - Fuel Facility Expansion 35100 Enchanted Parkway, Federal Way, Washington 98003 Permit No. 19-101782-00-UP Costco Loc. No. 061 / Our Job No. 6076 Dear Natalie: RESUBMITTED NOV 2 2 2019 CITY OF FEQE UN(Ty C)e.V WAy PMENT We have revised the plans and technical documents for the above -referenced project in accordance with your comment letter dated September 18, 2019. Enclosed are the following documents for your review and approval: 1. Four (4) copies of the Project Narrative prepared by Barghausen Consulting Engineers, Inc. dated March 29, 2019 2. Four (4) copies of the updated Site Plan prepared by Barghausen Consulting Engineers, Inc. dated November 19, 2019 3. Four (4) copies of the updated Civil Plan Set prepared by Barghausen Consulting Engineers, Inc. dated November 6, 2019 4. Four (4) copies of the updated Landscape Plan prepared by Barghausen Consulting Engineers, Inc. dated November 4, 2019 5. Four (4) copies of the Kittelson & Associates, Inc. Memo dated November 20, 2019 The following outline provides each of your comments in italics exactly as written, along with a narrative response describing how each comment was addressed: COMMUNITY DEVELOPMENT - PLANNING DIVISION Natalie ffamienieckf 253-835-2638 natalie.kamieniecLkipcitvoffederalway.com • Please note that the controller building location will need to be adjusted in order to meet front yard setback of 20 feet from the right-of-way tract or right-of-way dedication. Response: We request the removal of a requirement to enter into a Tract X agreement for a future 12-foot right-of-way dedication, as detailed in our Responses to Right -of -Way Modification Comments dated November 20, 2019. BARGHAUSEN CONSULTING ENGINEERS, INC. 18215 72ND AVENUE SOUTH KENT, WA 98032 P) 425-251-6222 F) 425-251-8782 BRANCH OFFICES: TUMWATER, WA KLAMATH FALLS, OR LONG BEACH, CA ROSEVILLE, CA SAN DIEGO, CA barghausen.com RESUBMITTED NOV 2 2 2019 Natalie to Planner nie r CO MUOF N7V FEDERAL � Associate Planner E'VFt, City of Federal Way Community Development Department -2- November 22, 2019 PUBLIC WORKS - PUBLIC WORKS DEVELOPMENT SERVICES DIVISION Ann Dower, 253-835-2732, ann.dower gitt•offederalwayco►n • As a condition of the building permit, a Tract X agreement must be signed for future right- of-way on 16th Avenue South, The Tract X will consist of a 12-foot wide tract for the length of the Costco property frontage, which will remain private until such time as the city deems it necessary for frontage improvements on 16th Avenue South. The Tract X should be called out on the site plan. Response: As noted in our Responses to Right -of -Way Modification Comments dated November 20, 2019, we request the removal of a conditional requirement to enter into a Tract X agreement to commit to dedicating a 12-foot width of right-of-way. As discussed in our Response to Conditions of Approval letter dated August 1, 2019, the current project does not include or require any improvements to the Enchanted Parkway right-of-way and a future 12-foot dedication would impact the property by creating a non -conforming situation for an existing use. Additionally, a 12-foot dedication would result in locating existing property infrastructure, including a retaining wall necessary to support the fuel facility within the City right-of-way. Entering into a Tract X agreement would unnecessarily burden the Costco property due to the uncertain future development status of the property and require the property owner to assume liability without being able to fully utilize the land. Based on the circumstances impacting the Enchanted Parkway frontage of the Costco property, a 4-foot dedication of the right-of-way as shown in the enclosed Site Plan dated November 19, 2019 is a more appropriate solution. A 4-foot dedication would bring the right-of-way line up to the foot of the rock retaining wall, leaving existing private infrastructure out of the right-of-way and preventing a future non -conforming situation for an existing use. Additionally, the dedication would eliminate the current encroachment of public sidewalk and public transportation facilities on Costco's property by moving the right- of-way line/property line four (4) feet to encompass the existing public improvements. • No right-of-way dedication will be required on South 352 d Street. The five-foot dedication should be removed from the site plan. Response: Acknowledged. The 5-foot dedication has been removed from the revised Site Plan. PUBLIC WORKS — PUBLIC WORKS TRAFFIC DIVISION Sarady Long. 253-835-2743 sarady.lon-qCcDcifyoffederalway.com The proposed development is expected to add about 54 weekday PM peak hour trips to the SR 161/South 352nd Street intersection and the site access. As such, the westerly driveway must be redesigned to minimize queuing on South 352nd Street and to facilitate on -site traffic circulation. Please provide queuing and LOS analysis at SR 161 and South 352 Street intersection and at the westerly driveway on South 352nd Street. Per the Synchro queuing analysis performed by staff, the existing PM peak hour westbound left turn 95th percentile queue length at SR 161/South 352nd Street intersection is approximately 261 feet. This westbound left turn queue exceeds the available 150-foot storage pocket. Field observation during the afternoon peak hour and PM peak hour verified that the westbound left turn queue will extend past the westerly driveway, thus 10 BARGUAUSEN Desiree Winkler Deputy Public Works Director City of Federal Way Public Works Department 33325 8th Avenue South Federal Way, WA 98003 Office: (253) 835-2700 RESUBM17TEU NOV 2 2 2019 CiTY OF FEDERAL WAY IO?Mir UNITY DEYELOPMF. ) November 19, 2019 HAND DELIVERY RE: Responses to Right -of -Way Modification Comments Costco - Fuel Facility Expansion 35100 Enchanted Parkway, Federal Way, Washington 98003 Permit No. 19-102337-00-SM Costco Loc. No. 061 / Our Job No. 6076 Dear Desiree: We have revised the plans and technical documents for the above -referenced project in accordance with your comment letter dated September 13, 2019. Enclosed are the following documents for your review and approval: 1. One (1) Site Plan prepared by Barghausen Consulting Engineers, Inc. dated November 19, 2019 The following outline provides each of your comments in italics exactly as written, along with a narrative response describing how each comment was addressed: The City of Federal Way Public Works Department has reviewed your request for amendments to the right-of-way modification issued June 19, 2019. The modification letter outlined several conditions that you requested be waived, as follows: I. Dedicate 12 feet of right-of-way on Enchanted Parkway S frontage After review of the site plan submitted on August 6, 2019, staff concurs that the 12' dedication will not be required. However, a Tract X agreement between the applicant and the City shall be recorded as a condition of building permit approval. This agreement will commit the applicant to dedicating the 12' width of right-of-way at such time as the City deems it necessary for future frontage improvements. Response: We request the removal of a conditional requirement to enter into a Tract X agreement to commit to dedicating a 12-foot width of right-of-way. As discussed in our Response to Conditions of Approval letter dated August 1, 2019, the current project does not include or require any improvements to the Enchanted Parkway right-of-way and a future 12-foot dedication would impact BARGHAUSEN CONSULTING ENGINEERS, INC. 1821572ND AVENUE SOUTH KENT, WA98032 P) 425-251-6222 F) 425-251-8782 BRANCH OFFICES: TUMWATEP, WA KLAMATH FALLS, OR LONG BEACH, CA ROSEVILLE, CA SAN DIEGO, CA barghausen.com Desiree Winkler Deputy Director Public Works City of Federal Way Public Works Department -2- November 22, 2019 the property by creating a non -conforming situation for an existing use. Additionally, a 12-foot dedication would result in locating existing property infrastructure, including a retaining wall necessary to support the fuel facility, within the City right-of-way. Entering into a Tract X agreement would unnecessarily burden the Costco property due to the uncertain future development status of the property, and require the property owner to assume liability without being able to fully utilize the land. Based on the circumstances impacting the Enchanted Parkway frontage of the Costco property, a 4-foot dedication of the right-of-way as shown in the enclosed Site Plan dated November 19, 2019 is a more appropriate solution. A 4-foot dedication would bring the right-of-way line up to the foot of the rock retaining wall, leaving existing private infrastructure out of the right-of-way and preventing a future non -conforming situation for an existing use. Additionally, existing pedestrian and public transportation infrastructure currently located within Costco's property, would be relocated back to within the City owned right-of-way. 2. Dedicate 5 feet of right-of-way on S 352nd Street After review of the site plan submitted on August 6, 2019, staff concurs that the 5' dedication will not be required. Response: Acknowledged. 3. Meet all current ADA standards within the public right-of-way This condition is typical for development proposals that are subject to the frontage improvement requirements outlined in Section 19.135.030 and is not waived. Spec/trc locations will be assessed during building permit review. Response: Ramps at the intersection of Enchanted Parkway and South 352nd Street were updated earlier this year to current ADA standards. Modifications to the westernmost driveway at S 352nd Street will comply with current ADA standards. 4. Reconstruct the existing westernmost driveway on S 352 Street to reduce on -street queuing and provide safer entry from the westbound left -turn lane on S 352" St. Response: The western -most driveway along South 352nd Street will be modified to provide an on -site 148-foot left -turn lane for fuel facility bound traffic, and a 148-foot through lane for traffic accessing the overall site. This modification will include the relocation of existing parking lot planters, and a removal of two (2) parking stalls resulting in a total of 691 parking stalls for the Costco property, which continues to comply with the minimum parking requirement of 521 stalls. Desiree Winkler Deputy Director Public Works City of Federal Way Public Works Department -3- November 22, 2019 ,.- We believe that the above responses, together with the enclosed revised plans and technical documents, address all of the comments in your letter dated September 13, 2019. Please review and approve the enclosed at your earliest convenience. If you have questions or need additional information, please do not hesitate to contact me at this office. Thank you. Sincerely, Aq� � � Charles Moseley Senior Project Manager 7 CM/lb 6076c.148.docx enc: As Noted cc: Kim Katz, Costco Wholesale Corporation John Ellingsen, Ellingsen & Company Jay S. Grubb, Barghausen Consulting Engineers, Inc. Chris S. Ferko, Barghausen Consulting Engineers, Inc. Sean Anderson, Barghausen Consulting Engineers, Inc. Mettle Brasel, Barghausen Consulting Engineers, Inc. a n M a ZO M„W Z.105 ---wry------------ y--------------- y — — — — — - ®_ — — — —— HE p 0 m RESUBMITTED NOV 2 2 2019 Natalie to Planner nie r COMMUNN" OF Dp�LOPMY, 1 Associate Planner City of Federal Way Community Development Department -3- November 22, 2019 blocking the eastbound left turn traffic into the site. Furthermore, the southbound right -turn traffic out of the westerly driveway typically encroaches on to the eastbound left turn lane, thus creating conflict with vehicles turning into the site. To address these issues, staff has recommended redesigning the driveway to include increasing the driveway throat length to a minimum of 50 feet, and modifying the existing standard curb cut to radius. Also, a left turn lane from the internal drive aisle into the fueling site, and other options should be explored in order to reduce the eastbound left -turn queues on South 352nd Street in to the site. Response: Please refer to the Revised Site Plan dated November 19, 2019. As requested in the City's Right -of -Way Modification Comments dated September 13, 2019 and Technical Review Comments dated September 18, 2019, our traffic consultant, Kittelson & Associates, Inc. has analyzed the westbound queues and LOS for the intersection of Enchanted Parkway and South 352nd Street and the westerly driveway on South 352nd Street. Please refer to Kittelson & Associate, Inc.'s memo dated November 20, 2019 for their conclusions. Based on their analysis and review of the City's suggested revisions to address the City's concerns with the westerly driveway, we have modified the westerly driveway as recommended by the City, including Kittelson & Associate's additional recommendations: a curb radius and revised lanes to one exit and two entry lanes. The exit lane is a right out only, restricted by a pork chop with pedestrian cut -through. The two entry lanes consist of a center lane dedicated to left turns for the fuel facility and a bypass lane for access to Costco parking and the shopping center. As shown in Kittelson & Associate, Inc.'s memo, these improvements will allow for ease of access to the site and provide an overall reduction in queues, particularly southbound queues from the shopping center to South 352nd Street and westbound queues at the SR 161/South 352nd Street intersection. We believe that the above responses, together with the enclosed revised plans and technical documents, address all of the comments in your letter dated September 18, 2019. Please review and approve the enclosed at your earliest convenience. If you have questions or need additional information, please do not hesitate to contact me at this office. Thank you. Sincerely, Charles Moseley f CM/lb [6076c.147.docx] Senior Project Manager enc: As Noted cc: Kim Katz, Costco Wholesale Corporation John Ellingsen, Ellingsen & Company Jay S. Grubb, Barghausen Consulting Engineers, Inc. Chris S. Ferko, Barghausen Consulting Engineers, Inc. Sean Anderson, Barghausen Consulting Engineers, Inc. Mettle Brasel, Barghausen Consulting Engineers, Inc. The Public Works traffic Division has finished its review of the submitted materials. The following technical review items must be address prior to Public Works approval. 1. Revise the westerly driveway on S 352"d St to provide a 14' Through plus Right (Thru+Rt) lane and a 16' entry lane. Please see below. 2. The westerly driveway on S 352"d St. must be improved to meet current standards. 3. Submit Vehicle Turning Diagram for the right turn maneuver out of the internal gas station driveway and the southbound right turn maneuver onto S 352"d St. This diagram will show how the appropriate design vehicle leave the site without encroaching onto opposing traffic lanes or mounting a curb. 4. Provide channelization plan showing lane width, signage, striping, etc. to the City for review. Signage and channelization plans shall be per MUTCD. 5. The submitted plans must depict improvements and/or right-of-way dedication consistent with the approved Right -of -Way modification dated June 19, 2019. 0 -KC w�fJ$ ]VOP Y7 "1 BARGuAUSEN August 19, 2019 HAND DELIVERY Natalie Kamieniecki Associate Planner City of Federal Way Community Development Department 33325 8th Avenue South Federal Way, WA 98003 Office: (253) 835-2700 RE: Responses to Comments Costco - Fuel Facility Expansion 35100 Enchanted Parkway, Federal Way, Washington 98003 Permit No. 19-101782-00-UP Costco Loc. No. 061 / Our Job No. 6076 Dear Natalie: We have revised the plans and technical documents for the above -referenced project in accordance with your comment letter dated July 2, 2019. Enclosed are the following documents for your review and approval: 1. Four (4) copies of the Preliminary Technical Information Report prepared by Barghausen Consulting Engineers, Inc. revised on August 7, 2019 2. Four (4) copies of the Revised Civil Plan Sets, including: a. Preliminary Site Plan prepared by Barghausen Consulting Engineers, Inc. dated July 31, 2019 b. Preliminary Grading and Drainage Plan prepared by Barghausen Consulting Engineers, Inc. dated May 3, 2019 c. Preliminary Drainage, Grading, and Right -of -Way Plan prepared by Barghausen Consulting Engineers, Inc. dated August 1, 2019 d. Conceptual Water Quality Improvements Plan prepared by prepared by Barghausen Consulting Engineers, Inc. dated August 1, 2019 e. Site Cross Sections prepared by prepared by Barghausen Consulting Engineers, Inc. dated August 1, 2019 3. Four (4) copies of the updated Boundary and Topographic Survey prepared by Barghausen Consulting Engineers, Inc. dated August 7, 2019 BARGHAUSEN CONSULTING ENGINEERS, INC. 18215 72ND AVENUE SOUTH KENT, WA 98032 P) 425-251-6222 F) 425-251-8782 BRANCH OFFICES: TUMWATER, WA KLAMATH FALLS, OR LONG BEACH, CA ROSEVILLE, CA SAN DIEGO, CA barghausen.com Natalie Kamieniecki Associate Planner City of Federal Way Community Development Department -2- August 19, 2019 The following outline provides each of your comments in italics exactly as written, along with a narrative response describing how each comment was addressed: PUBLIC WORKS — DEVELOPMENT SERVICES DIVISION Ann Dower, 253-835-2732, ann.dowerd)cifvoffederalway.com Vertical datum is required to be KCAS or NGVD 29. NA VD 88 must be converted Response: The survey has been converted to NGVD 29. In addition, the proposed grading on the civil plans has been updated to reflect the latest datum. Revise the survey to accurately show the existing detention facilities, conveyance system, and discharge points. There are several discrepancies between the survey, the design plans, and the City's inspection maps that must be resolved. For example: • The largest of the existing detention facilities, along with its discharge point, must be shown on the survey. Response: The existing detention facilities have been added to the survey based on available as -built plan information. • The conveyance system showing where the south detention vault discharges is not shown on the survey or the design plans. Response: The final discharge location for the south detention vault is now shown on the survey, based on available as -built plans. • The north detention vault is shown much smaller on the survey than is shown on City system maps. Sheet 4 of the design plans shows it both sizes. This must be resolved. Response: The vaults have been drawn per available as -built plans. The smaller rectangle shown on Sheet 4 is actually an access lid and not a separate vault itself. • The survey shows runoff from the Costco main building roof discharging directly into S. 352nd Street and the design plans don't include that part of the site. This is an important issue as the roof runoff must be detained. Response: Roof runoff does not discharge to the existing pavement. Roof drain connections have been drawn per available as -built plans and are shown connecting directly to the existing drainage system. Under the fuel canopy, the survey shows a storm drainage connection between existing CB 79 and the onsite storm system. The design plans show it as an existing sanitary sewer connection. The connection must be to sanitary sewer and must be revised if it is not. Response: The survey has been corrected to accurately show the under canopy connection as sanitary sewer. In addition, the connection to the existing sanitary sewer main is now shown per available as -built plans. Natalie Kamieniecki Associate Planner City of Federal Way Community Development Department -3- August 19, 2019 • In several random areas of the survey and design plans, the conveyance trails off with no particular discharge point or connection to the rest of the system. The conveyance system needs to be fully shown. Response: The existing conveyance system connects to the entire development. Areas on the Costco property not drawn previously have been corrected. However, the property's drainage system connects to the entire development and showing the entire drainage network would require survey and utility locates well outside the scope of the project. To qualify for the 0.15 cfs Conservation Flow Control exception, the detention calculations must be revised so that the historic site condition 100-year peak flow can be compared to the un- detained, developed 100- year peak flow for the same surfaces. I believe that the surfaces have been selected accurately, and the historic site condition has been modeled correctly, but it appears that the developed site condition includes detention at a Conservation Flow Control level. Response: The calculations for the developed condition have been modeled using the 701 inflows for 15-minute time step 100-year flow per the provided email correspondence from the Department of Ecology. In addition, the total amount of target impervious surface for the project has been reduced to 0.191 acres from 0.367 acres. In the first submittal, utility trenching and maintenance areas were incorrectly classified as replaced impervious surface. The 0.15 CFS Conservation Flow Control exception is still met when the revised impervious surface area is modeled. The Public Works Department has reviewed the Right -of -Way (ROW) Modification Request, Number 19- 102337-00-SM, dated May 13, 2019. Based on Federal Way Revised Code (FWRC), the direction provided by the City Council, and the information provided, the following requirements and conditions of approval are associated with the decision made: 1. Provide a plan clearly depicting accurate locations of existing fuel island dispensers, underground storage tanks, walls, and parking so staff can fully evaluate the need for the ROW dedications on Enchanted Parkway S. and S. 352`d Street versus impact on the site. 2. Dedicate up to 12 feet of ROW on Enchanted Parkway S. frontage and up to five feet on S. 352`d Street frontage as directed by staff, based on staff evaluation. 3. Meet all current ADA standards within the public ROW. This may require reconstruction of existing ramps, driveways, etc. 4. Reconstruct the existing westernmost driveway on S. 352`d Street to reduce on -street queuing and provide safer entry from the westbound left -turn lane of S. 352`d Street which may include adding a 25 radius and turn lane into the fueling site. Response: On August 6, 2019, we submitted a response to the right-of-way modification waiver approval requesting modification of the conditions of approval. Natalie Kamieniecki Associate Planner City of Federal Way Community Development Department -4- August 19, 2019 PUBLIC WORKS — TRAFFIC DIVISION Serady Lon-g. 253-835-2743, sarady.longCa),cityoffederalway.com The westerly driveway on S. 352rd Street should be redesigned to minimize queuing on S. 352rd Street and to facilitate on -site traffic circulation. This may include increasing driveway throat length to a minimum of 50' and modify the existing standard curb cut to a curb radius. Also, a left turn lane from the internal drive aisle into the fueling site and other options should be explored in order to reduce the eastbound left -turn queues on S. 352nd Street into the site. Please see the picture below for a potential improvement to the driveway. Response: The project is anticipated to address existing queuing and congestion issues occurring at the fuel facility and westernmost driveway entrance along South 352nd Street. Additional modifications to widen the drive -aisle to provide a left -turn pocket and pass -by lane will negatively impact the site through loss of parking and are not necessary. The findings in the Trip Generation and Queuing Summary dated January 15, 2019 prepared by Kittelson and Associates, Inc. determined that the existing fuel facility queuing area is sufficient to contain the anticipated vehicle stacking after installation of the added dispensers. This is due to the minor increase in trip generation relative to the increased efficiency in member fuel purchases resulting from the installation of additional dispensers. As a result, peak vehicle queues will be less extreme and dissipate much quicker. Additional recommended drive -aisle modifications to provide directional arrows and striping at the fuel facility exit are also unnecessary. The pavement widths are currently sufficient to allow two lanes of traffic to use the exit onto the main drive -aisle. 2. The internal driveway off of Enchanted Parkway S. between the Costco fueling facility and the Olive Garden restaurant should be redesigned to incorporate a mini -roundabout or other alternatives. Response: The project scope is limited to the expansion of the fuel facility and does not include any other modifications to on -site parking or circulation. The trip generation resulting from the project is anticipated to be minor and does not have a significant impact to current on -site access or circulation patterns occurring within the greater commercial development Natalie Kamieniecki Associate Planner City of Federal Way Community Development Department -5- August 19, 2019 area. A modification to the noted internal driveway off of Enchanted Parkway is not required for the project. Additionally, Costco does not own or control all of the property required to modify the noted internal driveway. 3. Show street improvements and ROW dedication on SR 161 (Enchanted Parkway S.) and S. 352rd Street. The applicant/owner may submit an appraisal for the subject property. The Public Works Development Services Division will evaluate the submitted appraisal data to determine if the project actually meets the City's 25 percent threshold for requiring street frontage improvements and ROW dedication. Response: The City issued a right-of-way modification waiver approval letter on June 19, 2019 and no street improvements are required for the project along SR 161 or South 352nd Street. The right-of-way modification waiver included a condition of approval that required a dedication of right-of-way along the two noted street frontages. The requested dedication of driveway along the two frontages is not necessary for the project and will impact the existing property resulting in non -conforming situations that do not currently exist, as described in the Responses to Conditions of Approval Letter dated August 5, 2019. 4. Traffic impact fee for the proposed eight (8) new vehicle fueling positions will be calculated at the time a completed building permit application is filed and must be paid prior to permit issuance. Response: We acknowledge that a traffic impact fee will be calculated when a completed building permit application is filed and must be paid prior to permit issuance. We believe that the above responses, together with the enclosed revised plans and technical documents, address all of the comments in your letter dated July 2, 2019. Please review and approve the enclosed at your earliest convenience. If you have questions or need additional information, please do not hesitate to contact me at this office. Thank you. Sincerely, Charles Moseley Senior Project Manager CM/lb 6076c.144.doc enc: As Noted cc: Ms. Kim Katz, Costco Wholesale Corporation Mr. John Ellingsen, Ellingsen & Company Mr. Jay S. Grubb, Barghausen Consulting Engineers, Inc. Mr. Chris S. Ferko, Barghausen Consulting Engineers, Inc. Mr. Sean Anderson, Barghausen Consulting Engineers, Inc. Ms. Mettie Brasel, Barghausen Consulting Engineers, Inc. BARGUAUSEN Fueling Facility Expansion Use Process II Permit Project Narrative Costco Wholesale 35100 Enchanted Parkway South Federal Way, Washington 98003 APN No. 219260-0290 Costco No. 61 / Our Job No. 6076 March 29, 2019 Project Location: RECEIVED APR 16 2019 CITY OF FEDERAL WAY COMMUNITY DEVELOPMENT The expansion will occur on the north side of the existing Costco fuel facility. The property is zoned Commercial Enterprise (CE) in which the fuel facility is an allowed use. The existing fuel facility was previously approved under Use Permit No. 00-102669-00-UP. Project Description: Overview Costco is seeking a Use Process II Permit to allow for the expansion of the existing fuel facility. The project includes installation of four (4) new multi -product dispensers (MPDs) with an expansion of the overhead canopy, relocation of the controller enclosure, and associated site improvements. The intent of the expansion is to provide a more efficient fuel purchasing experience for Costco members. Grading Site grading will be limited to the installation of canopy footings, under canopy slab, queueing area, and site stormwater improvements. Parking and Circulation The project will provide an overall total of 783 stalls for the Costco development. City parking standards require a minimum of one (1) parking stall for every 300 square feet of gross floor area for bulk retail uses and one (1) parking stall for every 300 square feet of gross floor area for vehicle service stations, excluding areas under the pump island canopies. The existing warehouse measures 156,250 square feet in size and, therefore, a minimum of 521 parking stalls is required for the Costco development. Off-street parking for the Costco site will continue to comply with City parking standards after the fuel facility expansion. The fuel facility will continue to provide single -direction circulation with a full-length bypass lane between each dispenser island. To facilitate circulation into and out of the center fueling position, the design has incorporated a spacing of twenty-eight (28) feet between the center and front dispensers. Transportation The primary purpose of the fuel station expansion is to improve upon the current operations and reduce queueing that the existing facility experiences. The market area of the Federal Way Costco is already defined through existing membership and operations. Since the membership of Costco does not change with the expansion of a fuel facility, demand for gas at the Federal Way Costco will not change. BARGHAUSEN CONSULTING ENGINEERS, INC. 18215 72ND AVENUE SOUTH KENT, WA 98032 P) 425-251-6222 F) 425-251-8782 BRANCH OFFICES: TUMWATER, WA KLAMATH FALLS, OR LONG BEACH, CA ROSEVILLE, CA SAN DIEGO, CA barghausen.com A minimal increase in trips is expected with the expansion and other Costco locations where gas stations have been expanded show this small increase in trips is greatly outweighed by the benefits of providing more pumps to expedite the processing of vehicles during peak times. Similar to opening more cashiers/check-out lanes at a supermarket, the additional "servers" available do not determine how many people wait in line but serve to process those waiting in line more efficiently and quickly. Reduced queues and wait times have been consistently observed at expanded Costco fuel stations constructed with a higher number of fueling positions. The average time it takes for a vehicle to fuel does not significantly change by the addition of more fueling positions but because there are more fueling positions available to process vehicles, all expansions were found to have overall more efficient processing of vehicles, shorter wait times, shorter queues, and less idling after the expansion. Architectural Design The canopy expansion is designed to match the existing Costco fuel canopy and includes metal -wrapped canopy fascia with elevation changes on the north and south facades, and CMU wrapped canopy columns. City design standards require facades longer than 60 feet and visible from a right-of-way to incorporate fagade treatments, as well as maintaining overall design continuity by using similar elements throughout the project such as architectural style and features, materials, colors, and textures. The canopy will maintain similar fagade treatments to remain consistent with the City Code. Lighting and Sicmage The under -canopy lighting will be updated to flat lens LED lighting fixtures for the canopy. Sign lighting will also be LED. All lighting will be confined to the subject property and no glare or direct light will be cast on adjacent properties or right-of-ways. LED lighting is more efficient and results in less light spillage than the existing Metal Halide lighting. The existing canopy signs are approximately 26 square feet in size and will be replaced with new 20-square-foot "Costco Wholesale" signs located on the north and south facades of the canopy. Landscaping The project will reduce 90 square feet of landscaping for the Costco development and the site will provide approximately 40,635 square feet of landscaping. City landscape standards require a minimum of twenty- two square feet of landscape coverage per parking stall provided for the Costco development. Based on the ratio, the city requires a minimum of 15,246 square feet of landscaping. The Costco development will continue to exceed City landscape standards after the expansion of the fuel facility. Construction Construction of the fuel facility expansion will be completed in a single phase and commence after approval of the applicable permits. Depending on construction sequencing, the existing fuel facility may remain open during construction. Purpose of Request: Use Process II Permit Pursuant to Federal Way Revised Code Section 19.60.050, a Use Process II Permit shall be approved if the following findings are met: Site plan criteria. a) It is consistent with the comprehensive plan; Response: The project does not change the current use of the site. The project site is zoned Commercial Enterprise (CE) with the same designation in the Comprehensive Plan. The fuel facility is a permitted use subject to a Use Process II Permit within the CE zone and is consistent with the requirements of the Commercial Enterprise Comprehensive Plan designation indicated in the table below. -2- Reuu_irement Response LUGS: Develop a quality commercial enterprise The project is an expansion of the existing fuel environment characterized by a viable, vibrant, facility; the project will refresh and update the and attractive mix of commercial, retail, office, look of the fuel facility and improve its operations industrial, and supportive uses and utilize thereby enhancing its contribution to the mix of locational and design criteria to ensure uses within the shopping. compatibility between uses. LUP35: Allow a broad range of commercial, The Costco fuel facility will maintain the quality retail, office, industrial, and supportive uses to service and operational standards. The meet the needs of workers and consumers, in expansion will promote a more efficient fueling well integrated, well -functioning, high quality experience for the workers and consumers that developments. utilize the facility. LUP36: Require development to be compatible The project will not change the current use of the and well integrated into its surroundings and site or impact the location of the fuel facility. The adjacent zones through site and building design project will continue to be compatible with the and development standards that reduce or surrounding zones and adjacent uses. The fuel eliminate land use conflicts and nuisance facility will maintain quality operational standards impacts; ensure project aesthetics; promote after the expansion. sharing of public facilities and services; and improve vehicular and pedestrian traffic flow and safety, including access control and off-street interconnectivity between adjoining properties where feasible. LUP37: Allow general and specialty retail uses The fuel facility provides a general service for the that serve the needs of people employed or people employed and residing in the local area, residing in the local area, as well as "destination" and the broader consumer travelling via retail and wholesale businesses that may serve Interstate 5 and Highway 18. The purpose of the a broader consumer base vis-a-vis the area's expansion is to provide a more efficient fuel convenient access to Interstate 5 and Highway purchasing experience for the Costco members 18. utilizing the Federal Way facility. LUP38: Do not allow heavy industrial uses on The project is a commercial use surrounded by properties that adjoin residential zones. commercial zoning. b) It is consistent with all applicable provisions of this title; Response: The fuel facility will continue to be harmonious with the character of the Costco development and surrounding area with respect to landscaping, scale, lot coverage, and similar site design aspects. The fuel facility will continue to operate similarly to the existing fuel facility and will comply with all local, state, and federal permitting and environmental requirements. The fuel facility will comply with all applicable development standards as detailed in the response table provided under below. Development Standard Requirement Response Maximum Building Height 40 feet The maximum height of the canopy is approximately 17 feet from finished grade with a 14-foot 6-inch clearance. Front Setback 20 feet The project will not encroach into the setback area. ME Side -Yard Setback None The project will not encroach into the setback area. Rear -Yard Setback None The project will not encroach into the setback area. Pump Island Setback 20 feet The project will not encroach into the setback area. Canopy Setback 20 feet The project will not encroach into the setback area. Off -Street Parking One (1) parking space for The project will provide 783 every 300 square feet of parking stalls. gross floor area for bulk retail uses. One (1) parking space for every 300 square feet of gross floor area for vehicle service stations, excluding areas under the pump island canopies. Total amount of parking required, based on ratios above, is 521 parking stalls. Landscaping Minimum of twenty-two The project will provide square feet of landscape approximately 40,635 square coverage per parking stall. feet of landscaping for the Total amount of landscaping Costco development. required, based on the above ratios is 15,246 square feet. Signs Two (2) wall mounted signs The project will include one with a maximum sign area of (1) 20-square-foot "Costco 7 percent of the building Wholesale" sign on the north fagade area and a maximum and south fagades of the individual sign area of 240 canopy. square feet. Approximately 50-square feet of signage is allowed on the north and south canopy fagades. Exterior Lighting The applicant shall select, Under -canopy lighting will be place and direct light sources installed with flat lens LED both directable and non- lighting fixtures and lighting directable so that glare will be directed downward to produced by any light source, prevent offsite glare. Sign to the maximum extent lighting will also be LED. possible, does not extend to adjacent properties or to the right-of-way. The applicant shall utilize energy efficient -light sources. !M Design Criteria All building facades that are both longer than 60 feet and are visible from either a right- of-way or residential use or zone shall incorporate facade treatment, such as facade modulation, landscape screening, or incorporate a pedestrian plaza. c) It is consistent with the public health, safety, and welfare; The design will match the existing structure and will include metal -wrapped canopy fascia with elevation changes on the north and south fagades, and CMU wrapped canopy columns. Response: The project will not change the existing fuel facility use and will comply with all local, state, and federal permitting requirements required to protect the public health, safety, and welfare. The project is compatible with the established commercial character of the surrounding land uses. d) The streets and utilities in the area of the subject property are adequate to serve the anticipated demand from the proposal; Response: Per Kittelson's "Trip Generation Memo" dated January 15, 2019, the streets in the area are adequate to serve the anticipated demand from the fuel facility expansion. The utilities serving the existing facility are adequate to meet the anticipated demand of the fuel facility expansion. e) The proposed access to the subject property is at the optimal location and configuration for access; and Response: Per Kittelson's "Trip Generation Memo" dated January 15, 2019, the project does not impact the existing location and configuration of the access onto the site and the expansion will improve the on -site circulation, resulting in shorter queue wait times, and provide a more efficient fuel purchasing experience for Costco members. t) Traffic safety impacts for all modes of transportation, both on and off site, are adequately mitigated. Response: Per Kittelson's "Trip Generation Memo" dated January 15, 2019, the project will increase by 52 new peak hour trips. The project will not impact traffic safety offsite and will improve on -site circulation by reducing queues, which will decrease the possibility of fuel facility traffic flowing over to the adjacent parking areas. Community design guideline decisional criteria. a) It is consistent with site design standards set forth in FWRC 19.115.050 for all zoning districts; Response: The project will not change the current use of the site and will maintain the existing site design. The project will meet the standards set forth in FWRC 19.115.050, provided in the table below: 5- Re uirement Response General Criteria FWRC 19.115.060 (1) a) Natural amenities such as views, The project is an expansion of an existing significant or unique trees, or structure and will not impact the surrounding groupings of trees, creeks, riparian natural amenities. corridors, and similar features unique to the site should be incorporated into the design. b) Pedestrian areas and amenities The project will maintain the existing landscape should be incorporated in the overall and pedestrian amenities. site design. Pedestrian areas include but are not limited to outdoor plazas, arcades, courtyards, seating areas, and amphitheaters. Pedestrian amenities include but are not limited to outdoor benches, tables and other furniture, balconies, gazebos, transparent glass at the ground floor, and landscaping. c) Pedestrian areas should be easily The landscaping around the fuel facility will seen, accessible, and located to take continue to provide a visual aesthetic that advantage of surrounding features exceeds the Federal Way landscaping such as building entrances, open requirements. spaces, significant landscaping, unique topography or architecture, and solar exposure. d) Project designers shall strive for The fuel facility will remain consistent with the overall design continuity by using existing Costco warehouse. The expansion will similar elements throughout the match the architectural style, colors, and project such as architectural style and textures of the existing fuel facility. features, materials, colors, and textures. e) Place physical features, activities, and The existing fuel facility is sited at southwest people in visible locations to maximize corner of the site with visibility to Enchanted the ability to be seen, and therefore, Parkway, South 352nd Street and the site. An discourage crime. For example, place attendant is present during all hours of cafes and food kiosks in parks to operation for customer service, fuel operations increase natural surveillance by park and safety. users, and place laundry facilities near play equipment in multiple -family residential development. Avoid barriers, such as tall or overgrown landscaping or outbuildings, where they make it difficult to observe activity. f) Provide access control by utilizing The project provides physical barriers to protect physical barriers such as bollards, the fuel facility equipment, security cameras to fences, doorways, etc., or by security monitor the facility, and an attendant present hardware such as locks, chains, and during hours of operation. alarms. Where appropriate, utilize 6- f-) security guards. All of these methods result in increased effort to commit a crime and, therefore, reduce the potential for it to happen. g) Design buildings and utilize site The fuel facility is designed to reflect the design that reflects ownership. For character of the main Costco warehouse. The example, fences, paving, art, signs, signs, landscaping, paving, and well maintained good maintenance, and landscaping property present a strong sense of ownership. are some physical ways to express An attendant is present during hours of ownership. Identifying intruders is operation for customer service, fueling much easier in a well-defined space. operations, and maintain the cleanliness of the An area that looks protected gives the facility. impression that greater effort is required to commit a crime. A cared - for environment can also reduce fear of crime. Areas that are run down and the subject of graffiti and vandalism are generally more intimidating than areas that do not display such characteristics. Surface parking lots FWRC 19.115.060 (2) a) Site and landscape design for parking Site and landscape design for parking lots will lots are subject to the requirements of continue to meet the requirements found in Chapter 19.125. Chapter 19.125. i. Within the CE zone, type III i. The project provides a 19-foot Type III landscaping 10 feet in width shall landscaping buffer along the frontage of be provided along all property SR 161 and a 13-foot Type III lines abutting public rights -of -way landscaping buffer along the frontage of and access easements. (FWRC S. 352nd Street. 19.125.060(9)(a)) ii. The project provides a 20-foot ii. Within the CE zone, type III landscape buffer along the interior landscaping five feet in width shall property line abutting the parcel be provided along all perimeter lot containing the warehouse facility. lines not abutting residential or public right-of-ways. (FWRC 19.125.060(9)(c)) b) Vehicle turning movements shall be The parking area to the north will continue to minimized. Parking aisles without loop meet the parking and circulation areas and will access are discouraged. Parking and be clearly delineated with the appropriate vehicle circulation areas shall be signage and ground painting. clearly delineated using directional signage. c) Driveways shall be located to be The project will not impact the existing visible from the right-of-way but not driveways or curb cuts. impede pedestrian circulation on -site or to adjoining properties. Driveways should be shared with adjacent properties to minimize the number of driveways and curb cuts. d) Multi -tenant developments with large The requirement is not applicable to the project surface parking lots adjacent to a because the project will not add a new right-of-way are encouraged to structure, but will expand the existing canopy incorporate retail pads against the structure adjacent to the right-of-way. right-of-way to help break up the large areas of pavement. e) See FWRC 19.115.090 for See the responses presented under Criteria b supplemental guidelines. below. Parking Structures (including parking floors located within commercial buildings) FWRC 19.115.060 (3) a) The bulk (or mass) of a parking The requirement is not applicable to the structure as seen from the right-of-way project. A parking structure is not within the should be minimized by placing its scope of the project. short dimension along the street edge. The parking structure should include active uses such as retail, offices or other commercial uses at the ground level and/or along the street frontage. b) Parking structures which are part of The requirement is not applicable to the new development shall be project. A parking structure is not within the architecturally consistent with exterior scope of the project. architectural elements of the primary structure, including rooflines, facade design, and finish materials. c) Parking structures should incorporate The requirement is not applicable to the methods of articulation and accessory project. A parking structure is not within the elements, pursuant to FWRC scope of the project. 19.115.060(3)(b), on facades located above ground level. d) Buildings built over parking should not The requirement is not applicable to the appear to "float" over the parking area, project. A parking structure is not within the but should be linked with ground level scope of the project. uses or screening. Parking at grade under a building is discouraged unless the parking area is completely enclosed within the building or wholly screened with walls and/or landscaped berms. e) Top deck lighting on multi -level parking The requirement is not applicable to the structures shall be architecturally project. A parking structure is not within the integrated with the building, and scope of the project. screened to control impacts to off -site uses. Exposed fluorescent light fixtures are not permitted. f) Parking structures and vehicle The requirement is not applicable to the entrances should be designed to project. A parking structure is not within the minimize views into the garage interior scope of the project. from surrounding streets. Methods to help minimize such views may include, but are not limited to, landscaping, -a- planters, and decorative grilles and screens. g) Security grilles for parking structures The requirement is not applicable to the shall be architecturally consistent with project. A parking structure is not within the and integrated with the overall design. scope of the project. Chain -link fencing is not permitted for garage security fencing. h) See FWRC 19.115.090(3)(d) for See the responses presented under Criteria b, supplemental guidelines. below. Pedestrian circulation and public spaces FWRC 19.115.060 (4) a) Primary entrances to buildings, except The standard is not applicable to the project. for zero lot line townhouse The project will add no new pedestrian development and attached dwelling pathways. units oriented around an internal courtyard, should be clearly visible or recognizable from the right-of-way. Pedestrian pathways from rights -of - way and bus stops to primary entrances, from parking lots to primary entrances, and pedestrian areas, shall be accessible and should be clearly delineated. b) Pedestrian pathways and pedestrian The standard is not applicable to the project. areas should be delineated by separate The project will add no new pedestrian paved routes using a variation in paved pathways. texture and color, and protected from abutting vehicle circulation areas with landscaping. Approved methods of delineation include: stone, brick or granite pavers; exposed aggregate; or stamped and colored concrete. Paint striping on asphalt as a method of delineation is not encouraged. c) Pedestrian connections should be The standard is not applicable to the project. provided between properties to The project will add no new pedestrian establish pedestrian links to adjacent pathways. buildings, parking, pedestrian areas and public rights -of -way. d) Bicycle racks should be provided for all The main warehouse will continue to provide commercial developments. bicycle racks for the commercial development. e) Outdoor furniture, fixtures, and Existing outdoor elements will be maintained. streetscape elements, such as lighting, freestanding signs, trellises, arbors, raised planters, benches and other forms of seating, trash receptacles, bus stops, phone booths, fencing, etc., should be incorporated into the site design. f) See FWRC 19.115.090 for See the responses presented under Criteria b supplemental guidelines. below. .9- Landscaping FWRC 19.115.060 (5) Refer to Chapter 19.125 FWRC for specific landscaping requirements and for definitions of landscaping types referenced throughout this chapter. The project will comply with the applicable standards in the FWRC 19.125.040, General Landscaping requirements for all zones and the FWRC 19.126.060 (9) Landscaping requirements for the Commercial Enterprise (CE) zone. The project provides twenty feet of Type III landscaping along the frontage of Highway 161 and thirteen feet of Type III landscaping along the frontage of South 352nd Street. Additionally, the Costco site consists of 40,635 square feet of landscaping and promotes a cohesive development. Commercial service and institutional facilities. FWRC 19.115.060 (6) a) Service yards shall comply with the following: i. Service yards and loading areas shall be designed and located for easy access by service vehicles and tenants and shall not displace required landscaping, impede other site uses, or create a nuisance for adjacent property owners. ii. Trash and recycling receptacles shall include covers to prevent odor and wind-blown litter. iii. Service yard walls, enclosures, and similar accessory site elements shall be consistent with the primary building(s) relative to architecture, materials and colors. iv. Chain -link fencing shall not be used where visible from public streets, on - site major drive aisles, adjacent residential uses, or pedestrian areas. Barbed or razor wire shall not be used. b) Site utilities shall comply with the following: i. Building utility equipment such as electrical panels and junction boxes should be located in an interior utility room. Site utilities including transformers, fire standpipes and engineered retention ponds (except biofiltration swales) should not be the dominant element of the front landscape area. When these must be located in a front yard, they shall be either The standards within FWRC 19.115.060 (6) (a) i-iv are not applicable to the project. The project is not proposing new service yards or any modification of the existing service yard. The fuel facility expansion will comply with the standards set forth in FWRC 19.115.060 (6) (b) as follows: All electrical panels and utility equipment will be located within the fuel facility controller enclosure. Not applicable, there are no utilities or open swales within the front yard setbacks. -10- undergrounded or screened by walls and/or Type I landscaping, and shall not obstruct views of tenant common spaces, public open spaces, monument signs, and/or driveways. Miscellaneous site elements. FWRC 19.115.060 (7) a) Lighting shall comply with the following: Please refer to the Photometric Plan by TE, Inc. The fuel facility expansion will comply with i. Lighting levels shall not spill onto the standards set forth in FWRC 19.115.060 adjacent properties pursuant to (7) (a) as follows: FWRC 19.105.030(3). ii. Lighting shall be provided in all i. The lighting levels at the adjacent loading, storage, and circulation property lines meet the standards areas, but shall incorporate cut-off pursuant to FWRC 19.105.030(3). shields to prevent off -site glare. ii. Existing site lighting will be maintained. iii. Lighting standards shall not reduce New under canopy lighting will provide the amount of landscaping required adequate lighting within all loading, for the project by Chapter 19.125 storage, and circulation areas that is FWRC, Outdoors, Yards, and directed to prevent off -site glare. Landscaping. iii. The project will not impact the existing lighting on the site. The required landscaping will not be impacted by any alteration of the surrounding lighting. b) Drive -through facilities, such as banks, The fuel facility expansion will comply with the cleaners, fast food, drug stores and standards set forth in FWRC 19.115.060 (7) (b) service stations, etc., shall comply with as follows: the following: i. The fuel facility will provide Type II I i. Drive -through windows and stacking landscaping along the right-of-way to lanes are not encouraged along facades visually screen the stacking lanes. The of buildings that face a right-of-way. If fuel facility is elevated and contains a they are permitted in such a location, retaining wall that is adjacent to then they shall be visually screened Highway 161. This provides an from such street by Type III landscaping and/or architectural element, or elemental buffer from the right-of-way combination thereof; provided, such with the stacking lanes and the fuel elements reflect the primary building facility. and provide appropriate screening. ii. The fuel facility utilizes landscape ii. The stacking lane shall be physically islands to separate the facility with the separated from the parking lot, parking lot areas, sidewalks, and sidewalk, and pedestrian areas by Type pedestrian areas. III landscaping and/or architectural iii. The standard is not applicable to the element, or combination thereof; project. The project does not provide provided, such elements reflect the drive -through speakers. primary building and provide appropriate separation. Painted lanes iv. The fuel facility provides pass -by lanes are not sufficient. along all the fueling positions to iii. Drive -through speakers shall not be provide adequate circulation through audible off -site. the facility. iv. A bypass/escape lane is recommended V. See the responses presented under for all drive -through facilities. Criteria b below. - 11 - v. See FWRC 19.115.090(4) for supplemental guidelines. b) It is consistent with applicable supplemental guidelines set forth in FWRC 19.115.090; and Response: The fuel facility will continue to comply with all applicable supplemental guidelines set forth in FWRC 19.115.090, as indicated in the table below: Reuuirement Response District Guidelines: Office park (OP), corporate park (CP), and commercial enterprise (CE) FWRC 19.115.090 a) Surface parking may be located behind The standard is not applicable because the the building, to the side(s) of the building, project will not alter the location of the parking. or adjacent to the right-of-way; provided, however, that parking located adjacent to the right-of-way maximizes pedestrian access and circulation pursuant to FWRC 19.115.050(4). b) Entrance facades shall front on, face, or The standard is not applicable with the be clearly recognizable from the right -of- project. However, the facility will adequately way. direct traffic through the facility with directional signs and pavement markings that are clearly recognizable. c) Building entrances shall be architecturally The standard is not applicable with the emphasized and shall incorporate project. The project is the addition of fuel transparent glass. dispensers and expansion of the overhead canopy. d) Ground floor entrances to retail sales or The standard is not applicable with the scope services shall incorporate plaza features of the project. The project is the addition of or furnishings, and/or streetscape fuel dispensers and expansion of the amenities, in a context -sensitive amount overhead canopy. and combination, considering the scale of the retail use(s) and entrance(s) to the overall building or development, and the proximity and accessibility from the building to other existing plaza or streetscape features. e) Ground -level mirrored or reflective glass is The standard is not applicable with the scope not allowed adjacent to a public right -of- of the project. The project does not provide way or pedestrian area. any ground -level glass. f) If utilized, chain -link fences visible from The project will not utilize chain -link fences for public rights -of -way or adjacent properties, the project beyond the construction period. and not screened by Type I landscaping as defined in Chapter 19.125 FWRC, shall utilize vinyl -coated mesh, powder -coated poles, dark color(s), and architectural element(s) such as pole caps and/or decorative grid pattern. -12- c) For development applications for remodeling or expansion of an existing development, it is consistent with those provisions of Chapter 19.115 FWRC, Community Design Guidelines, identified by the director as being applicable. Response: The fuel facility expansion will continue to be harmonious with the character of the Costco development and surrounding area with respect to landscaping, scale, lot coverage, and similar site design aspects. The fuel facility will continue to comply with all applicable development standards of the CE zone, as indicated in the table under Criteria Site Plan b, above. Conclusion The responses above and application materials demonstrate that the expansion of the fuel facility meets the approval criteria for Use Process II: Site Plan Review. The City's approval of this application is respectfully requested. -13- KITTELSON &ASSOCIATES MEMORANDUM 1!� 80 COYHERCE PARK DRIV--, SuirE 450 RF.,ToNj VAJOi91 P 10.1.j,3,8970 Date January 15, 2019 Project #: 23465 To Kim Katz — Costco Real Estate John Ellingsen — Ellingsen & Company, Inc. From. Chris Tiesler and Kristine Connolly — Kittelson & Associates, Inc. Project: Federal Way Costco Gasoline Fuel Station Expansion Subject: Trip Generation and Queueing Summary Kittelson & Associates, Inc. (Kittelson) has prepared transportation information for the expansion of the existing Costco Gasoline fuel station located on the northeast corner of Enchanted Parkway South and South 352"d Street in Federal Way, Washington. Of particular focus was the anticipated trip generation expected for the fuel station expansion and the anticipated vehicle circulation and queuing. The overall site plan for the Federal Way Costco Gasoline expansion is provided in Figure 1. Figure 2 provides a detailed view of the fuel station area. This trip generation estimate will help inform the City's concurrency model and determine the need for and/or extent of a traffic impact analysis per City code to obtain a concurrency permit for the project. PROJECT DESCRIPTION The existing Federal Way Costco Gasoline fuel station consists of four islands (eight dispensers) with a total of sixteen (16) vehicle fueling positions. The expansion will widen the fuel station to include a third row of dispensers on the entrance side, providing a new total of twenty-four (24) vehicle fueling positions. The intent of the Costco Gasoline station expansion is to improve the member fuel purchasing experiences at this location by mitigating long queues and wait times during peak periods. E 6 Fadera/Way Cosiao Gas Expansnon - l cn ® 7 Y I n, 1 LU I I Q ® I w I SOUTH 352ND STREET KITTELSON & ASSOCIATES 0 0 0 d 0 Januarymiq -7 Leo Site Plan Figure Federal Way, Washington 1 v Fedeis/Way Gos&v Gas Expansion 1< KITTELSON ! & ASSOCIATES Janaary2019 �— IJ : x•wAll, N +aver. O r I Li z 1 ; J ' t I Q o o o i o Facility Site Expansion Figure Federal Way, Washington 2 Federal Way Costco Gasoline Fuel Station Expansion Project N: 23465 January 15, 2019 Page 4 COSTCO TRIP GENERATION DATABASE For the past 17 years, Kittelson has maintained a database of traffic data and travel characteristics for Costco Wholesale, including fuel stations. The database contains transportation information such as trip rates, trip type percentages, and parking demand for Costco locations throughout the United States as well as Canada and Mexico. The database is updated periodically each time new Costco traffic counts or information become available to Kittelson. To best evaluate the anticipated transportation characteristics of the Federal Way fuel station expansion, database data and data collected on site was used. The Costco transportation database contains a large quantity of data related to Costco Gasoline fuel stations. Trip generation rates and trip type information for over 35 Costco Gasoline facilities located throughout the U.S. are included. Costco has invested significant effort into developing this use -specific trip generation database for both their warehouses and their fuel stations because of the unique characteristics of Costco member travel that exist due to membership requirements and the nature of Costco sales. These unique elements apply to the trip generation for Costco warehouses, Costco Gasoline fuel stations, and the interaction of trips between the two. The Costco-specific trip generation data presented herein follows nationally -accepted practices for trip generation data collection as recommended by the Institute of Transportation Engineers (ITE) and presents a robust data set upon which to confidently and accurately predict the trip generation of the expansion of the fuel station. FEDERAL WAY FUEL STATION EXPANSION TRIP GENERATION ESTIMATE In developing a trip generation estimate for fuel station expansion, it is important to recognize that the fuel station exists today, and the project is an expansion to this existing use, not the addition of a new use. Furthermore, the market area of the Federal Way Costco is already defined through existing membership and operations. As such, it's unlikely that the trip generation of the fuel station will increase directly in proportion to the increased number of fueling positions. It is more likely that the additional fueling positions will serve to more efficiently and effectively process the current peak demand at the fuel station, thus reducing wait times, vehicle queuing, and vehicle idling. Kittelson reviewed before and after data from other comparable Costco Gasoline fuel station expansion sites to determine a more representative relationship between new trip generation and the addition of fueling positions to the existing station. Kittelson & Associates, Inc. Reston, Virginia Federal Way Costco Gasoline Fuel Station Expansion January 15, 2019 Before and After Fuel Expansion Data Summary Project #: 23465 Page 5 Kittelson conducted trip generation counts at seven other Costco Gasoline fuel station locations that have expanded in size. These locations include sites where fuel stations have expanded from 16 fueling positions to 22 or 24 fueling positions. The comparable expansion sites identified were: ■ Rancho Del Rey, California ■ Cypress, California • NE San Jose, California • Concord, California • Rohnert Park, California • Portland, Oregon • Tustin II, California To work with a representative sample size, trip generation data was collected on an hourly basis for a period before and after the expansion at each of these locations. Only data collected during similar months of the year before and after the expansion were included in this summary (for example, trip generation data for the months of March and April before the expansion were compared to trip generation data for the months of March and April after the expansion). The total number of weekday PM peak hour and Saturday midday peak hourtrip ends counted forthe seven listed sites' are provided in Table 1 and Table 2, respectively. Note the total number of trip ends does not reflect any reductions due to internal capture, pass -by, or diverted trips. Table 1: Weekdav PM Peak Hour Trip Growth Location Average Weekday PM Peak Hour Trips Generated Before Expansion After Expansion % Difference Rancho Del Rey, CA 414 676 63.3% NE San Jose, CA 474 458 -3.4%1 Concord, CA 470 550 17.0% Rohnert Park, CA 426 498 16.9% Cypress, CA 472 654 38.6% Portland, OR No PM peak data available for this location Tustin II, CA' No PM peak data available for this location Average 26.5 % 1 Slight reduction underscores fact that adding capacity to a member -only gas station does not necessarily increase demand. The 3.4 percent reduction is well within expected 5-10% daily fluctuations in hourly traffic volumes. z Expansion from 16 fueling positions to 22 fueling positions. All other examples are expansions from 16 to 24 fueling positions 1 Not all sites have data for both time periods. All available data are provided. Kittelson & Associates, Inc. Reston, Virginia Federal Way Costco Gasoline Fuel Station Expansion January 15, 2019 Table 2: Saturday Midday Peak Hour Trip Growth Project #: 23465 Page 6 Saturday Midday Peak Hour Trips Generated Location Before Expansion After Expansion % Difference Rancho Del Rey, CA No Saturday Midday data available for this location NE San Jose, CA 494 686 38.9% Concord, CA 520 700 34.6% Rohnert Park, CA 518 606 17.0% Cypress, CA 514 740 44.0% Portland, OR 462 616 33% Tustin II, CA' 580 610 5.2% Average 1 28.8% Exoansion from 16 fueline positions to 22 fueline positions All other examples are expansions from 16 to 24 fueling positions As shown in Table 1 and Table 2, each of the sites with available data recorded some increase in the number of daily fuel transactions. However, the increase found in most situations is significantly less than what would be calculated from a direct linear relationship to the number of vehicle fueling positions. Using a linear relationship, expanding the fuel station from 16 to 22 fueling positions would equate to an increase in activity or trip generation of 38% and expanding from 16 to 24 positions would equate to an increase of 50%. However, the actual before and after data only shows an average increase of 26.5% and 28.8% in daily fuel transactions during the weekday PM peak hour and Saturday midday peak hour, respectively. This data demonstrates that increasing the number of fueling positions at the Federal Way Costco Gasoline fuel station will not result in a direct linear increase in trip generation. The before and after data captures the change in demand that results from reducing peak hour queues and wait times at the fuel stations due to latent demand and more efficient peak operations. In all cases, peak queues and wait times are significantly reduced. Those members who previously chose not to purchase fuel because of the wait times will likely do so once the operations are improved. Trip Type The data collected at existing Costco Gasoline fuel stations indicate the trip generation characteristics described below for internal trip capture between the fuel station and the warehouse, as well as pass - by trips and diverted capture from the surrounding street system. The unique nature of Costco operations and its membership requirements result in different trip characteristics than those observed at typical fuel stations summarized in the standard reference Trip Generation, published by the Institute of Transportation Engineers (ITE). The percentages of pass -by or diverted trips at Costco fuel stations is considerably lower than those quoted in the ITE Trip Generation manual for typical fuel stations. Correspondingly, membership requirements also have a significant effect on trip internalization (or sharing of trips) between the warehouse and the fuel station. Fewer people exclusively visit a Costco fuel station (in comparison to a typical standalone fuel station) because they have another primary purpose for visiting the site (that being a trip to the warehouse). Kittelson & Associates, Inc. Reston, Virginia Federal Way Costco Gasoline Fuel Station Expansion January 15, 2019 internal Trips Project #: 23465 Page 7 A key finding from the studies conducted at Costco warehouses with fuel stations is the fact that approximately 34% of the PM peak hour trips to and from Costco fuel stations and 35% of the Saturday midday trips are internal capture trips. Internal capture trips account for those members who patronize both the warehouse and the fuel station during a single visit to the Costco site. As such, although they account for a trip to both the warehouse and the fuel station, they only account for one overall vehicle trip to the site and on the surrounding transportation system. Based on studies including surveys at Costco fuel stations and membership card transaction data, on average 34% and 35% of the members buying gas during the weekday PM and Saturday midday peak hours, respectively, are members whose main purpose to the site is to visit the Costco warehouse. At some sites this number ranges as high as 75%. However, to remain conservative, the average rates are applied to this analysis. Pass -by Trips Another key trip characteristic that must be considered is that of pass -by trip capture. Pass -by trips represent members (and trips) that are currently traveling on the surrounding street network for some other primary purpose (such as a trip from work to home) and stop into the site en route during their normal travel. As such, pass -by trips do not result in a net increase in traffic on the surrounding transportation system and their only effect occurs at the immediate intersections and site access driveways where they become turning movements. Based on studies of customer surveys at Costco Gasoline fuel stations, on average 37% and 33% of the members buying gas during the weekday PM and Saturday midday peak hours, respectively can be classified as pass -by trip capture from the surrounding street system. This is lower than the average pass -by rate quoted in the ITE Trip Generation manual for typical service stations (45%) and is attributable to the unique travel characteristics that result from Costco's membership requirements. Diverted Trips Diverted trips are similar to pass -by trips in that they represent members (and trips) that are currently traveling on the surrounding street network for some other primary purpose and stop into the site en route during their travel. However, as the name indicates, diverted trips divert from the normal roadways they would be traveling on to go to the Costco site. Based on studies of customer surveys at Costco Gasoline fuel stations, on average 37% and 36% of the members buying gas during the weekday PM and Saturday midday peak hours, respectively, can be classified as diverted trip capture from the surrounding street system. Trip Generation Estimate The peak hour for trip generation was defined as the analyzed hour during which the most vehicles entered the Federal Way Costco Gasoline fuel station. Arrival data were collected between 6:00 AM and 8:00 PM and on a typical weekday and between 6:00 AM and 8:00 PM on a typical Saturday. The Kittelson & Associates, Inc. Reston, Virginia Federal Way Costco Gasoline Fuel Station Expansion January 15, 2019 Project #: 23465 Page 8 weekday PM peak hour is between 4:50 — 5:50 PM and the Saturday midday peak hour is between 12:05 — 1:05 PM. Under existing conditions, the Federal Way Costco Gasoline fuel station generates approximately 490 total trip ends (or 245 vehicles) during the weekday PM peak hour, and 531 total trip ends (or 266 vehicles) during the Saturday midday peak hour. This information is included as Attachment A. Applying the data from Table 1 and Table 2, the observed increase in activity from other Costco Gasoline fuel station expansion sites to the existing trip generation provides an estimate of the expected number of additional total trips that will result from the Federal Way fuel station expansion. The trip generation estimates of the fuel station for the weekday PM peak hour and the Saturday midday peak hour are summarized in Table 3. Table 3: Federal Way Costco Gasoline Fuel Station Expansion Trip Generation Estimate Trip Type Weekday PM Peak'Hour Trip Ends Saturday Midday Peak Hour Trip Ends Existine Expected Increase Existing1 Expected Increase Total Trip Ends 490 130 531 (44) (186) 153 Internal Trips (167) (54) (34% P.M., 35% Sat.) Total External Trip Ends 323 86 345 (114) 99 (33) Pass -By Trips (120) (32) (37% P.M., 33% Sat.) Diverted Trips (120) (32) (124) (36) (37% P. M., 36% Sat.) Net New External Trip Ends 83 22 107 30 Source: Kittelson & Associates, 2018 1 Breakdown of volume and trip type generated by the existing fuel station provided for reference/informational purposes only. As can be seen from Table 3, the additional fueling positions are estimated to generate approximately 83 additional weekday PM peak hour total external trip ends (or 42 total additional vehicles) and 107 additional Saturday midday peak hour total external trip ends (or 54 total additional vehicles). However, only a small number of these external trip ends (22 to 30) would be new trips in the surrounding transportation system during the weekday PM and Saturday midday peak hours, respectively. Kittelson & Associates, Inc. Reston, Virginia Federal Way Costco Gasoline Fuel station Expansion January 15, 2019 FUEL STATION OPERATIONS & QUEUING Project it: 23465 Page 9 As outlined above, the primary purpose of the fuel station expansion is to improve the current operations and queuing that the existing fuel station experiences. While there is a minimal increase in trips expected with the fuel station expansion, other Costco expansion locations show that this is greatly outweighed by the benefits of providing more pumps to expedite the processing of vehicles during peak times. All expansion locations were found to have more efficient processing of vehicles, shorter wait times, shorter queues, and less idling after the expansion. For example, average peak period queues have been observed at some Costco Gasoline fuel stations to decrease by 45-50% after expansion. By increasing the amount of fueling positions available to process the fuel station demand by eight, a similar reduction in peak period queues and wait times is anticipated at the Federal Way location. Existing queuing data were collected in November 2018 at the Federal Way Costco Gasoline fuel station between 6:00 AM and 8:00 PM on a typical weekday and a typical Saturday. This information is included as Attachment A. For the queuing analysis, the peak hour was defined as the hour during which the average queue was the longest. The weekday PM peak hour is between 4:57 — 5:57 PM and the Saturday midday peak hour is between 1:00 — 2:00 PM. Table 4 summarizes the existing observed queuing conditions at the 16-position Federal Way Costco Gasoline fuel station. As shown in Table 4, more vehicles were observed in the queue during the Saturday midday peak period when the site is more active. Table 4: Existing Peak Hour Federal Way Costco Queuing Minimum Queue Maximum Queue Average Queue 95th Percentile Queue Weekday PM Peak Period 2 14 9 1 14 Saturday Midday Peak Period 12 26 20 E 25 * Queued vehicles waiting in line behind the pumps — do not include vehicles at tueling positions. To better demonstrate the effect fuel station expansion has on peak hour queuing, observed before/after weekday PM and Saturday midday peak hour maximum queues are compared in Table 5 and Table 6, respectively. Kittelson & Associates, Inc. Reston, Virginia Federal Way Costco Gasoline Fuel Station Expansion Project#. 23465 January 15, 2019 Page 10 Table 5: Weekdav PM Peak Hour Maximum Queue - Before & After Data Summary Location Fueling Positions Before' After Maximum Weekday PM Peak Hour Queue (vehicles) Before Expansion After Expansion % Difference Rohnert Park, CA 16 24 28 8 -71.4% Concord, CA 16 24 38 10 -73.7% NE San Jose, CA 16 24 47 6 -87.2% Portland, OR 16 24 35 12 -65.7% Wilsonville, OR 16 24 28 16 -42.9% Cypress, CA 16 24 35 17 -51.4% AVERAGE -65.4% Source: Kittelson & Associates, Inc. 2018 Table 6: Saturdav Middav Peak Hour Maximum Queue - Before & After Data Summary Location Fueling Positions Maximum Saturday Midday Peak Hour Queue (vehicles)_ Before After Before Expansion After Expansion % Difference Rohnert Park, CA 16 24 39 22 -43.6% Concord, CA 16 24 41 32 -22.0% NE San Jose, CA 16 24 47 31 -34.0% Portland, OR 16 24 35 20 -42.9% Wilsonville, OR 16 24 35 33 -5.7% Cypress, CA 16 24 52 19 -63.5% AVERAGE -35.2% Source: Kittelson & Associates, Inc. 2018 As shown in Table 5 and Table 6, Costco fuel station expansions at similar sites demonstrate a substantial reduction in recorded maximum peak hour queues (max one -minute queue recorded during peak one hour period) during both the weekday PM and Saturday midday peak hours. On average, these sites see a net average reduction of 65.4% and 35.2%, respectively following expansion, despite the noted increase in overall trips recorded in the same one -hour period. Applying these average reductions to the observed peak hour maximum queues at the Federal Way Costco fuel station would reduce the maximum observed one -minute queue from 14 vehicles to five vehicles during the weekday PM peak hour, and from 26 vehicles to 17 vehicles during the Saturday midday peak hour. Figure 3 presents a comparison of existing and projected maximum queues during the weekday PM peak hour. Figure 4 presents a similar comparison during the Saturday midday peak hour. Similar to opening more cashiers/check-out lanes at a supermarket, the additional "servers" available do not determine how many people wait in line but serve to process those waiting in line more efficiently and quickly. Reduced queues and wait times have been consistently observed at expanded Costco fuel stations constructed with a higher number of fueling positions. The average time it takes for a vehicle to fuel does not significantly change by the addition of more fueling positions but because there are more fueling positions available to process vehicles, all expansion locations were found to have overall more efficient processing of vehicles, shorter wait times, shorter queues, and less idling after the expansion. Kittelson & Associates, Inc. Reston, Virginia derai Way Coslco Gas Expansion DBCember2018 r )11-z ----------- --- - --- ---- - ------------ © .-----------. - � y 1 d l� l� l� �------------------ -------- i_________________________________ x 0v_00 .--------------�����»[ - --— ------ J ------------------'-"_"--------' 0����----..r..-. --- lm ---91 ::- 101 11-1 =a E Existing--.�.. Site Plan New Site Plan VEHICLE AT FUELING POSITION Maximum Queue Comparison Figure QUEUED VEHICLE Weekday PM Peak Hour 3 NOT TO SCALE Federal Way, Washington KITTELSON & ASSOCIATES Federal Way Coshco Gas Expansion ✓anaaiy2o19 z r EM O k a ------ -- �. ------ l� -------- ©-�---- w-go --- 1m--- AM -!MtP* EMIL,= --------------------- IUK Existing Site Plan VEHICLE AT FUELING POSITION QUEUED VEHICLE NOT TO SCALE ITTELSON & ASSOCIATES New Site Plan Maximum Queue Comparison Saturday Midday Peak Hour Federal Way, Washington Figure 4 Federal Way Costco Gasoline Fuel Station Expansion January 15, 2019 Project k: 23465 Page 13 These data indicate adding dispensers to the existing fuel station will substantially reduce wait times, queues, and idling once the fuel station is expanded. CONCLUSION The Federal Way Costco Gasoline fuel station expansion is anticipated to reduce queues by expediting the processing of vehicles. As with similar Costco Gasoline fuel station expansion locations, the expansion will ensure more efficient processing of vehicles, shorter wait times, shorter queues, and less idling time. The Costco-specific trip generation data presented herein follow nationally -accepted practices for trip generation data collection as recommended by ITE and present a robust dataset upon which to confidently and accurately predict the trip generation'of the fuel station expansion. Should additional information be necessary to understand the anticipated effects of the fuel station expansion, please contact Chris Tiesler at 571-384-2943 or ctiesler@kittelson.com. Kittelson & Associates, Inc. Reston, Virginia Attachment A Federal Way Costco Fuel Station Trip Generation & Queuing Data Quality Counts TRANSPORT-1 FION DA'A COLLECTION SERVICES Site Code: 14820416, 18 Location: Federal Way Costco Date: 11/1/2018 Ins Outs Total Hourly Ins Hourly Outs Hourly Total 6:00 AM 3 2 5 73 71 144 77 73 150 82 75 157 91 83 174 93 90 183 104 97 201 110 107 217 109 112 221 110 110 220 112 109 221 119 110 229 122 120 242 123 120 243 131 122 253 135 134 269 132 134 266 138 133 271 134 135 269 133 132 265 129 130 259 133 131 264 138 136 274 140 139 279 147 137 284 152 147 299 151 150 301 153 148 301 157 152 309 159 154 313 6:05 AM 5 3 8 6:10 AM 6 5 11 6:15 AM 5 5 10 6:20 AM 4 4 8 6:25 AM 4 3 7 6:30 AM 13 7 20 6:35 AM 9 11 20 6:40 AM 8 11 19 6:45 AM 6 7 13 6:50 AM 5 6 11 6:55 AM 5 7 12 7:00 AM 7 4 11 7:05 AM 10 5 15 7:10 AM 15 13 28 7:15 AM 7 12 19 7:20 AM 15 11 26 7:25 AM 10 13 23 7:30 AM 12 12 24 7:35 AM 10 9 19 7:40 AM 1 10 10 20 7:45 AM 13 8 21 7:50 AM 8 16 24 7:55 AM 6 7 13 8:00 AM 15 6 21 8:05 AM 14 17 31 8:10 AM 12 13 25 8:15 AM 13 11 24 8:20 AM 11 13 24 8:25 AM 9 10 19 8:30 AM 8 10 18 8:35 AM 14 10 24 8:40 AM 15 15 30 8:45 AM 15 11 26 8:50 AM 15 14 29 8:55 AM 11 17 28 9:00 AM 14 9 23 9:05 AM 16 15 31 9:10 AM 16 17 33 9:15 AM 15 13 287] (I Quality Counts IRANSPORFATION DATA COLLECTION SEP',,/ICES Site Code: 14820416, 18 Location: Federal Way Costco Date: 11/1/2018 Ins Outs Total Hourly Ins Hourly Outs Hourly Total 9:20 AM 18 18 36 166 169 175 176 179 184 179 191 195 197 206 209 211 212 220 230 228 222 241 239 237 242 239 240 242 248 246 247 248 247 238 232 240 232 229 229 228 232 236 223 159 165 172 171 171 182 185 180 190 191 197 202 207 208 209 218 222 216 219 225 227 231 229 228 226 232 235 242 243 247 244 250 245 243 240 243 244 241 239 231 325 334 347 347 350 366 364 371 385 388 403 411 418 420 429 448 450 438 460 464 464 473 468 468 468 480 481 489 491 494 482 482 485 475 469 472 472 473 475 454 9:25 AM 12 16 28 9:30 AM 14 17 31 9:35 AM 15 9 24 9:40 AM 18 15 33 9:45 AM 20 22 42 9:50 AM 10 17 27 9:55 AM 23 12 35 10:00 AM 18 19 37 10:05 AM 18 16 34 10:10 AM 25 23 48 10:15 AM 18 18 36 10:20 AM 20 23 43 10:25 AM 13 17 30 10:30 AM 22 18 40 10:35 AM 25 18 43 10:40 AM 16 19 35 10:45 AM 14 16 30 10:50 AM 29 20 49 10:55 AM 21 18 39 11:00 AM 16 21 37 11:05 AM 23 20 43 11:10 AM 22 21 43 11:15 AM 19 17 36 11:20 AM 22 21 43 11:25 AM 19 23 42 11:30 AM 20 21 41 11:35 AM 26 25 51 11:40 AM 17 20 37 11:45 AM 13 20 33 11:50 AM 20 17 37 11:55 AM 15 24 39 12:00 PM 24 16 40 12:05 PM 15 18 33 12:10 PM 19 18 37 12:15 PM 19 20 39 12:20 PM 21 22 43 12:25 PM 23 20 43 12:30 PM 24 19 43 12:35 PM 13 17 30 Quality Counts Site Code: 14820416, 18 Location: Federal Way Costco Date: 11/1/2018 Ins Outs Total Hourly Ins Hourly Outs Hourly Total 12:40 PM 19 20 39 225 240 244 249 242 245 262 264 262 262 249 251 252 244 242 252 247 245 224 219 218 207 217 227 225 224 226 214 222 226 228 234 240 251 250 241 243 254 246 252 231 235 237 236 239 239 245 247 246 245 246 253 253 249 248 246 247 251 247 240 234 232 228 221 225 222 227 223 224 219 220 225 227 232 239 243 241 243 242 244 456 475 481 485 481 484 507 511 508 507 495 504 505 493 490 498 494 496 471 459 452 439 445 448 450 446 453 437 446 445 448 459 467 483 489 484 484 497 488 496 12:45 PM 28 24 52 12:50 PM 24 19 43 12:55 PM 20 23 43 1:00 PM 17 19 36 1:05 PM 18 18 36 1:10 PM 36 24 60 1:15 PM 21 22 43 1:20 PM 19 21 40 1:25 PM 23 19 42 1:30 PM 11 20 31 1:35 PM 15 24 39 1:40 PM 20 20 40 1:45 PM 20 20 40 1:50 PM 22 18 40 1:55 PM 30 21 51 2:00 PM 12 20 32 2:05 PM 16 22 38 2:10 PM 15 20 35 2:15 PM 16 15 31 2:20 PM 18 15 33 2:25 PM 12 17 29 2:30 PM 21 16 37 2:35 PM 25 17 42 2:40 PM 18 24 42 2:45 PM 19 17 36 2:50 PM 24 23 47 2:55 PM 18 17 35 3:00 PM 20 21 41 3:05 PM 20 17 37 3:10 PM 17 21 38 3:15 PM 22 20 42 3:20 PM 24 17 41 3:25 PMJ 23 22 45 3:30 PM 20 23 43 3:35 PM 16 21 37 3:40 PM 20 22 42 3:45 PM 30 19 49 3:50 PM 16 22 38 3:55 PM 24 19 43 Quality Counts Site Code: 14820416, 18 Location: Federal Way Costco Date: 11/1/2018 Ins Outs Total Hourly Ins Hourly Outs Hourly Total 4:00 PM 14 22 36 246 245 239 236 230 228 227 227 220 207 215 217 220 220 229 232 233 235 237 237 243 251 246 242 242 243 244 236 238 243 235 241 237 227 228 222 226 228 230 237 245 244 243 240 237 234 230 229 224 219 216 217 214 216 218 221 224 227 231 232 233 239 247 245 243 244 249 248 245 243 245 238 241 243 233 235 233 232 225 226 491 489 482 476 467 462 457 456 444 426 431 434 434 436 447 453 457 462 468 469 476 490 493 487 485 487 493 484 483 486 480 479 478 470 461 457 459 460 455 463 4:05 PM 19 16 35 4:10 PM 11 20 31 4:15 PM 19 17 36 4:20 PM 18 14 32 4:25 PM 21 19 40 4:30 PM 19 19 38 4:35 PM 16 20 36 4:40 PM 13 17 30 4:45 PM 17 14 31 4:50 PM 24 19 43 4:55 PM 26 20 46 5:00 PM 17 19 36 5:05 PM 19 18 37 5:10 PM 20 22 42 5:15 PM 22 20 42 5:20 PM 19 17 36 5:25 PM 23 22 45 5:30 PM 21 23 44 5:35 PM 16 21 37 5:40 PM 19 18 37 5:45 PM 25 20 45 5:50 PM 19 27 46 5:55 PM 22 18 40 6:00 PM 17 17 34 6:05 PM 20 19 39 6:10 PM 21 27 48 6:15 PM 14 19 33 6:20 PM 21 14 35 6:25 PM 28 20 48 6:30 PM 13 25 38 6:35 PM 22 14 36 6:40 PM 15 21 36 6:45 PM 15 22 37 6:50 PM 20 17 37 6:55 PM 16 20 36 7:00 PM 21 15 36 7:05 PM 22 18 40 7:10 PM 23 20 43 7:15 PM 21 20 41 Quality Counts Site Code: 14820416, 18 Location: Federal Way Costco Date: 11/1/2018 Ins ❑uts Total Hourly Ins I Hourly Outs Hourly Total 7:20 PM 12 22 34 228 234 462 214 231 445 220 224 444 215 230 445 213 220 433 219 217 436 212 216 428 207 209 416 7:25 PM 14 17 31 7:30 PM 19 18 37 7:35 PM 17 20 37 7:40 PM 13 11 24 7:45 PM 21 19 40 7:50 PM 13 16 29 7:55 PM 11 13 24 Total 1 2865 1 2848 5713 Quality Counts TRANSPORFATIOiN DATA COLLECTION SERV!CES Site Code: 14820417, 19 Location: Federal Way Costco Date: 11/3/2018 Ins Outs Total Hourly Ins Hourly Outs Hourly Total 6:00AM 0 0 0 11 0 11 25 13 38 31 27 58 38 30 68 41 37 78 50 43 93 58 52 110 70 59 129 76 70 146 88 81 169 98 90 188 105 98 203 104 106 210 97 105 202 102 97 199 109 109 218 118 111 229 125 119 244 129 123 252 133 132 265 143 137 280 141 140 281 146 144 290 156 148 304 170 157 327 174 166 340 182 176 358 183 175 358 185 185 370 6:05AM 0 0 0 6:10 AM 0 0 0 6:15 AM 0 0 0 6:20 AM 0 0 0 6:25 AM 0 0 0 6:30 AM 0 0 0 6:35 AM 0 0 0 6:40 AM 0 0 0 6:45AM 0 0 0 6:50 AM 0 0 0 6:55 AM 11 0 11 7:00 AM 14 13 27 7:05 AM 6 14 20 7:10 AM 7 3 10 7:15 AM 3 7 10 7:20 AM 9 6 15 7:25 AM 8 9 17 7:30 AM 12 7 19 7:35 AM 6 11 17 7:40 AM 12 11 23 7:45 AM 10 9 19 7:50 AM 7 8 15 7:55 AM 10 8 18 8:00 AM 7 12 19 8:05 AM 11 6 17 8:10 AM 14 15 29 8:15 AM 12 9 21 8:20 AM 16 14 30 8:25 AM 12 13 25 8:30 AM 16 16 32 8:35 AM 16 16 32 8:40 AM 10 14 24 8:45 AM 15 13 28 8:50 AM 17 12 29 8:55 AM 24 17 41 9:00 AM 11 21 32 9:05 AM 19 16 35 9:10 AM 15 14 29 9:15 AM 14 19 33 Quality Counts FRANSPORI-AT'ON DATA COLLECTION SERVICES Site Code: 14820417, 19 Location: Federal Way Costco Date: 11/3/2018 Ins Outs Total Hourly Ins Hourly Outs Hourly Total 9:20 AM 11 10 21 180 188 193 199 203 209 212 210 216 212 223 233 246 241 240 241 245 248 250 247 248 260 255 254 247 253 257 252 249 250 246 248 250 251 252 250 255 254 245 255 181 182 188 190 195 201 204 207 209 210 210 211 226 232 228 230 234 236 243 242 241 246 250 249 248 249 253 250 251 251 248 246 247 244 248 249 249 250 248 253 361 370 381 389 398 410 416 417 425 422 433 444 472 473 468 471 479 484 493 489 489 506 505 503 495 502 510 502 500 501 494 494 497 495 500 499 504 504 493 508 9:25 AM 20 14 34 9:30 AM 21 22 43 9:35 AM 22 18 40 9:40 AM 14 19 33 9:45 AM 21 19 40 9:50 AM 20 15 35 9:55 AM 22 20 42 10:00 AM 17 23 40 10:05 AM 15 17 32 10:10 AM 26 14 40 10:15 AM 24 20 44 10:20 AM 24 25 49 10:25 AM 15 20 35 10:30 AM 20 18 38 10:35 AM 23 20 43 10:40 AM 18 23 41 10:45 AM 24 21 45 10:50 AM 22 22 44 10:55 AM 19 19 38 11:00 AM 18 22 40 11:05 AM 27 22 49 11:10 AM 21 18 39 11:15 AM 23 19 42 11:20 AM 17 24 41 11:25 AM 21 21 42 11:30 AM 24 22 46 11:35 AM 18 17 35 11:40 AM 15 24 39 11:45 AM 1 25 21 46 11:50 AM 18 19 37 11:55 AM 21 17 38 12:00 PM 20 23 43 12:05 PM 28 19 47 12:10 PM 1 22 22 44 12:15 PM 21 20 41 12:20 PM 22 24 46 12:25 PM 20 22 42 12:30 PM 15 20 35 12:35 PM 28 22 50 Quality Counts TRANSPORTA PON DA rA COLLECTION SERVICES Site Code: 14820417, 19 Location: Federal Way Costco Date: 11/3/2018 Ins Outs Total Hourly Ins Hourly Outs Hourly Total 12:40 PM 18 23 41 258 256 263 262 270 264 263 264 257 259 269 260 268 268 262 259 250 246 253 259 264 259 253 258 248 238 242 257 263 266 250 254 246 254 257 253 266 272 264 254 252 256 258 263 261 258 259 264 261 263 260 261 259 256 254 253 252 258 258 254 255 253 257 255 254 258 257 261 260 258 260 258 257 259 259 259 257 257 263 257 510 512 521 525 531 522 522 528 518 522 529 521 527 524 516 512 502 504 511 513 519 512 510 513 502 496 499 518 523 524 510 512 503 513 516 512 523 529 527 511 12:45 PM 23 25 48 12:50 PM 25 21 46 12:55 PM 20 22 42 1:00 PM 28 21 49 1:05 PM 22 16 38 1:10 PM 21 23 44 1:15 PM 22 25 47 1:20 PM 15 21 36 1:25 PM 22 24 46 1:30 PM 25 17 42 1:35 PM 19 23 42 1:40 PM 26 21 47 1:45 PM 23 22 45 1:50 PM 19 19 38 1:55 PM 17 21 38 2:00 PM 19 20 39 2:05 PM 18 22 40 2:10 PM 28 23 51 2:15 PM 28 21 49 2:20 PM 20 22 42 2:25 PM 17 22 39 2:30 PM 19 21 40 2:35 PM 24 21 45 2:40 PM 16 20 36 2:45 PM 13 26 39 2:50 PM 23 18 41 2:55 PM 32 25 57 3:00 PM 25 19 44 3:05 PM 21 20 41 3:10 PM 12 25 37 3:15 PM 32 19 51 3:20 PMJ 12 21 33 3:25 PM 25 24 49 3:30 PM 22 21 43 3:35 PM 20 21 41 3:40 PM 29 18 47 3:45 PM 19 26 45 3:50 PM 15 24 39 3:55 PM 22 19 1 41 Quality Counts Site Code: 14820417, 19 Location: Federal Way Costco Date: 11/3/2018 Ins Outs Total Hourly Ins Hourly Outs Hourly Total 4:00 PM 17 17 34 246 245 255 244 255 248 248 243 237 235 247 246 250 255 253 255 253 251 247 254 248 239 230 231 229 225 219 224 226 227 229 219 223 228 225 220 213 195 183 167 255 258 252 255 253 249 250 249 250 250 242 244 248 248 250 248 250 250 250 252 256 248 253 246 245 242 235 235 233 233 233 231 224 223 220 222 217 209 201 182 501 503 507 499 508 497 498 492 487 485 489 490 498 503 503 503 503 501 497 506 504 487 483 477 474 467 454 459 459 460 462 450 447 451 445 442 430 404 384 349 4:05 PM 20 23 43 4:10 PM 22 19 41 4:15 PM 21 22 43 4:20 PM 23 19 42 4:25 PM 18 20 38 4:30 PM 22 22 44 4:35 PM 15 20 35 4:40 PM 23 19 42 4:45 PM 17 26 43 4:50 PM 27 16 43 4:55 PM 21 21 42 5:00 PM 21 21 42 5:05 PMj 25 23 48 5:10 PM 20 21 41 5:15 PM 23 20 43 5:20 PM 21 21 42 5:25 PM 16 20 36 5:30 PM 18 22 40 5:35 PM 22 22 44 5:40 PM 17 23 40 5:45 PM 8 18 26 5:50 PM 18 21 39 5:55 PM 22 14 36 6:00 PM 19 20 39 6:05 PM 21 20 41 6:10 PM 14 14 28 6:15 PM 28 20 48 6:20 PM 23 19 42 6:25 PMJ 17 20 37 6:30 PM 20 22 42 6:35 PM 12 20 32 6:40 PM 21 16 37 6:45 PM 13 17 30 6:50 PM 15 18 33 6:55 PM 17 16 33 7:00 PM 12 15 27 7:05 PM 3 12 15 7:10 PM 2 6 8 7:15 PMJ 12 1 1 13 Quality Counts TRANSPORTATION DATA COLLECTION SERVICES Site Code: 14820417, 19 Location: Federal Way Costco Date: 11/3/2018 Ins Outs Total Hourly Ins I Hourly Outs Hourly Total 7:20 PM 10 12 22 154 175 329 141 164 305 125 147 272 117 130 247 100 119 219 91 105 196 81 92 173 70 82 152 7:25 PM 4 9 13 7:30 PM 4 5 9 7:35 PM 4 3 7 7:40 PM 4 5 9 7:45 PM 4 3 7 7:50 PM 5 5 10 7:55 PM 6 6 12 Total 2789 2786 5575 a: Quality Counts rr -•,S,,Olera'!ON Da ra _L,-C11Or�] SERVICES Site Code: 14830320 Location: Federal Way Costco Gas Station Queue Date: 11/1/2018 Time Queue Time Queue Time Queue Time Queue Time Queue Time Queue Time I Queue 6:00:00 AM 0 8:00:00 AM 0 10:00:00 AM 4 12:00:00 PM 0 2:00:00 PM 14 4:00:00 PM 11 6:00:00 PM 10 6:01:00 AM 0 8:01:00 AM 0 10:01:00 AM 7 12:01:00 PM 3 2:01:00 PM 12 4:01:00 PM 11 6:01:00 PM 8 6:02:00 AM 0 8:02:00 AM 0 10:02:00 AM 6 12:02:00 PM 1 2:02:00 PM 11 4:02:00 PM 9 6:02:00 PM 7 6:03:00 AM 0 8:03:00 AM 0 10:03:00 AM 3 12:03:00 PM 4 2:03:00 PM 8 4:03:00 PM 12 6:03:00 PM 10 6:04:00 AM 0 8:04:00 AM 0 10:04:00 AM 3 12:04:00 PM 6 2:04:00 PM 8 4:04:00 PM 3 6:04:00 PM 9 6:05:00 AMI 0 8:05:00 AM 1 1 10:05:00 AM 4 12:05:00 PMj 4 2:05:00 RAI 5 4:05:00 PMJ 2 6:05:00 PM 8 6:06:00 AM 0 8:06:00 AM 1 10:06:00 AM 6 12:06:00 PM 3 2:06:00 PM 5 4:06:00 PM 2 6:06:00 PM 12 6:07:00 AM 0 8:07:00 AM 0 10:07:00 AM 0 12:07:00 PM 2 2:07:00 PM 6 4:07:00 PM 6 6:07:00 PM 8 6:08:00 AM 0 8:08:00 AM 0 10:08:00 AM 3 12:08:00 PM 3 2:08:00 PM 5 4:08:00 PM 2 6:08:00 PM 10 6:09:00 AM 0 8:09:00 AM 0 10:09:00 AM 5 12:09:00 PM 3 2:09:00 PM 2 4:09:00 PM 3 6:09:00 PM 11 6:10:00 AM 0 8:10:00 AM 0 10:10:00 AM 2 12:10:00 PM 2 2:10:00 PM 1 4:10:00 PM 7 6:10:00 PM 7 6:11:00 AM 0 8:11:00 AM 0 10:11:00 AMI 3 12:11:00 PM 4 2:11:00 PM 2 4:11:00 PM 3 6:11:00 PM 7 6:12:00 AMI 0 8:12:00 AM 0 10:12:00 AM 4 12:12:00 PMJ 2 2:12:00 PM 4 4:12:00 PMI 0 6:12:00 PM 5 6:13:00 AM 0 8:13:00 AM 0 10:13:00 AM 7 12:13:00 PM 4 2:13:00 PMI 2 4:13:00 PM 3 6:13:00 PM 6 6:14:00 AM 0 8:14:00 AM 0 10:14:00 AM 5 12:14:00 PM 3 2:14:00 PMJ 2 4:14:00 PM 3 6:14:00 PM 5 6:15:00 AM 0 8:15:00 AM 0 10:15:00 AM 7 12:15:00 PM 4 2:15:00 PM 0 4:15:00 PM 1 6:15:00 PM 6 6:16:00 AM 0 8:16:00 AM 0 10:16:00 AM 7 12:16:00 PM 2 2:16:00 PM 1 4:16:00 PM 0 6:16:00 PM 6 6:17:00 AM 0 8:17:00 AM 1 10:17:00 AM 8 12:17:00 PM 1 2:17:00 PM 2 4:17:00 PM 0 6:17:00 PM 6 6:18:00 AM 0 8:18:00 AMI 2 10:18:00 AMj 5 12:18:00 PM 0 2:18:00 PM 1 4:18:00 PM 1 6:18:00 PM 4 6:19:00 AMI 0 8:19:00 AM 1 10:19:00 AM 5 12:19:00 PM 3 2:19:00 PM 1 4:19:00 PM 1 6:19:00 PM 0 6:20:00 AM 0 8:20:00 AM 0 10:20:00 AM 5 12:26:00 PM 3 2:20:00 PM 1 4:20:00 PM 0 6:20:00 PM 1 6:21:00 AM 0 8:21:00 AM 0 10:21:00 AM 3 12:21:00 PM 4 2:21:00 PM 1 4:21:00 PM 1 6:21:00 PM 6 6:22:00 AM 0 8:22:00 AM 0 10:22:00 AM 3 12:22:00 PM 2 2:22:00 PM 2 4:22:00 PM 2 6:22:00 PM 3 6:23:00 AM 0 8:23:00 AM 0 10:23:00 AM 7 12:23:00 PM 4 2:23:00 PM 2 4:23:00 PM 3 6:23:00 PMI 4 6:24:00 AM 0 8:24:00 AM 0 10:24:00 AM 5 12:24:00 PM 3 2:24:00 PM 3 4:24:00 PM 2 6:24:00 PM 5 6:25:00 AM 0 8:25:00 AMI 0 10:25:00 AMI 5 12:25:00 PM 3 2:25:00 PM 2 4:25:00 PM 3 6:25:00 PM 6 6:26:00 AMI 0 8:26:00 AM 0 10:26:00 AM 4 12:26:00 PMI 4 2:26:00 PMI 1 4:26:00 PMJ 3 6:26:00 PM 4 6:27:00 AMI 0 8:27:00 AM 0 10:27:00 AM 2 12:27:00 PM 2 2:27:00 PM 1 4:27:00 PM 3 6:27:00 PM 6 6:28:00 AMI 0 8:28:00 AM 0 10:28:00 AM 0 12:28:00 PM 2 2:28:00 PM 0 4:28:00 PM 5 6:28:00 PM 9 6:29:00 AM 0 8:29:00 AM 0 10:29:00 AM 1 12:29:00 PM 5 2:29:00 PM 2 4:29:00 PM S 6:29:00 PM 9 6:30:00 AM 0 8:30:00 AM 1 10:30:00 AM 2 12:30:00 PM 5 2:30:00 PM 0 4:30:00 PM 3 6:30:00 PM 11 6:31:00 AM 0 9:31:00 AM 1 10:31:00 AM 3 12:31:00 PM 4 2:31:00 PM 0 4:31:00 PM 7 6:31:00 PM 14 6:32:00 AM 0 8:32:00 AM 0 10:32:00 AM 5 12:32:00 PM 7 2:32:00 PM 0 4:32:00 PM 6 6:32:00 PM 8 6:33:00 AM 0 8:33:00 AMI 1 10:33:00 AM 8 12:33:00 PM 11 2:33:00 PMI 1 4:33:00 PMI 3 6:33:00 PM 6 6:34:00 AM 0 8:34:00 AM 0 10:34:00 AM 4 12:34:00 PM 30 2:34:00 PM 3 4:34:00 PM 7 6:34:00 PM 3 6:35:00 AMI 0 8:35:00 AM 0 10:35:00 AM 3 12:35:00 PMj 10 2:35:00 PM 4 4:35:00 PM 8 6:35:00 PM 6 6:36:00 AM 0 8:36:00 AM 0 10:36:00 AM 7 12:36:00 PM 7 2:36:00 PM 6 4:36:00 PM 5 6:36:00 PM 5 6:37:00 AM 0 8:37:00 AM 0 10:37:00 AM 8 12:37:00 PM 9 2:37:00 PM 5 4:37:00 PM 6 6:37:00 PM 4 6:38:00 AM 0 8:38:00 AM 0 10:38:00 AM 8 12:38:00 PM 12 2:38:00 PM 6 4:38:00 PM 3 6:38:00 PM 1 6:39:00 AM 0 8:39:00 AM 0 10:39:00 AM 10 12:39:00 PM 8 2:39:00 PM 5 4:39:00 PM 3 6:39:00 PM 8 6:40:00 AM 0 8:40:00 AMI 0 10:40:00 AM 10 12:40:00 PM 5 2:40:00 PM 3 4:40:00 PM 3 6:40:00 PM 13 6:41:00 AM 0 8:41:00 AM 2 10:41:00 AM 11 12:41:00 PM 7 2:41:00 PM 3 4:41:00 PM 4 6:41:00 PM 7 6:42:00 AMI 0 8:42:00 AM 1 10:42:00 AM 9 12:42:00 PM 8 2:42:00 PM 1 4:42:00 PM 1 6:42:00 PM 5 6:43:00 AM 0 9:43:00 AM 0 10:43:00 AM 9 12:43:00 PM 5 2:43:00 PM 1 4:43:00 PM 2 6:43:00 PM 8 6:44:00 AM 0 8:44:00 AM 0 10:44:00 AM 8 12:44:00 PM 3 2:44:00 PM 6 4:44:00 PM 2 6:44:00 PM 6 6:45:00 AM 0 8:45:00 AM 0 10:45:00 AM 8 12:45:00 PM 7 2:45:00 PM 3 4:45:00 PM 1 6:45:00 PM 4 6:46:00 AM 0 8:46:00 AM 1 10:46:00 AMI 7 12:46:00 PM 4 2:46:00 PM 2 4:46:00 PM 1 6:46:00 PM 2 6:47:00 AM 0 8:47:00 AMI 0 10:47:00 AM 7 12:47:00 PM 4 2:47:00 PM 4 4:47:00 PM 1 6:47:00 PM 0 6:48:00 AM 0 8:48:00 AM 1 10:48:00 AM 7 12:48:00 PM 7 2:48:00 PM 2 4:48:00 PM 2 6:48:00 PM 4 6:49:00 AM 1 0 8:49:00 AM 1 10:49:00 AM 5 12:49:00 PM 12 2:49:00 PM 1 4:49:00 PM 2 6:49:00 PM 2 6:50:00 AM 0 8:50:00 AM 0 10:50:00 AM 5 12:50:00 PM 8 2:50:00 PM 4 4:50:00 PM S 6:50:00 PM 2 6:51:00 AM 0 8:51:00 AM 2 10:51:00 AM 6 12:51:00 PM 14 2:51:00 PM 2 4:51:00 PM 5 6:51:00 PM 4 6:52:00 AMI 0 8:52:00 AM 2 10:52:00 AM 12 12:52:00 PM 18 2:52:00 PM 3 4:52:00 PM 3 6:52:00 PM 7 6:53:00 AM 0 8:53:00 AM 2 1 10:53:00 AM 13 12:53:00 PM 11 2:53:00 PIVI 4 4:53:00 PM 6 6:53:00 PM 7 6:54:00 AM 0 8:54:00 AM 0 10:54:00 AM 12 12:54:00 PMI 13 2:54:00 PM 5 4:54:00 PM 5 6:54:00 PM 5 6:55:00 AM 0 8:55:00 AM 0 10:55:00 AM 14 12:55:00 PM 16 2:55:00 PM 5 4:55:00 PM 5 6:55:00 PM 2 6:56:00 AM 0 8:56:00 AM 3 10:56:00 AM 13 12:56:00 PM 14 2:56:00 PM 6 4:56:00 PM 4 6:56:00 PM 3 6:57:00 AM 0 8:57:00 AM 0 10:57:00 AM 16 12:57:00 PM 15 2:57:00 PM 10 4:57:00 PM 11 6.57.00 PM 6 6:58:00 AM 0 8:58:00 AM 0 10:58:00 AM 12 12:58:00 PM 17 2:58:00 PM 8 4:58:00 PM 12 6:53:00 PMI 3 6:59:00 AMI 0 8:59:00 AMI 0 10:59:00 AMI 14 12:59:00 PM 13 2:59:00 PM 5 4:59:00 PMJ 12 6:59:00 PMJ 0 a: Quality Counts FRAN5P OP ::OLLL( Site Code: 14830320 Location: Federal Way Costco Gas Station Queue Date: 11/1/2018 Time Queue Time Queue Time Queue Time Queue Time Queue Time Queue Time Queue 7:00:00 AM 0 9:00:00 AM 0 11:00:00 AM 12 1:00:00 PM 11 3:00:00 PM 5 5:00:00 PM 9 7:00:00 PM 1 7:01:00 AM 0 9:01:00 AM 0 11:01:00 AM 14 1:01:00 PM 11 3:01:00 PM 7 5:01:00 PM 11 7:01:00 PM 1 7:02:00 AM 0 9:02:00 AM 0 11:02:00 AM 15 1:02:00 PM 10 3:02:00 PM 4 5:02:00 PM 10 7:02:00 PM 0 7:03:00 AM 0 9:03:00 AM 0 11:03:00 AM 12 1:03:00 PM 7 3:03:00 PM 5 5:03:00 PM 10 7:03:00 PM 0 7:04:00 AM 0 9:04:00 AM 2 11:04:00 AM 12 1:04:00 PM 7 3:04:00 PM 5 5:04:00 PM 10 7:04:00 PM 0 7:05:00 AM 0 9:05:00 AM 1 11:05:00 AM 10 1:05:00 PMl 7 3:05:00 PMI 3 5:05:00 PMI 11 7:05:00 PMI 5 7:06:00 AM 0 9:06:00 AM 0 11:06:00 AM 16 1:06:00 PM 10 3:06:00 PM 4 5:06:00 PM 12 7:06:00 PM 7 7:07:00 AM 0 9:07:00 AM 0 11:07:00 AM 10 1:07:00 PM 10 3:07:00 PM 3 5:07:00 PM 14 7:07:00 PM 9 7:08:00 AM 0 9:08:00 AM 0 11:08:00 AM 11 1:08:00 PM 10 3:08:00 PM 3 5:08:00 PM 6 7:08:00 PM 4 7:09:00 AM 0 9:09:00 AM 0 11:09:00 AM 13 1:09:00 PM 5 3:09:00 PM 0 5:09:00 PM 7 7:09:00 PM 9 7:10:00 AM 0 9:10:00 AM 1 11:10:00 AM 14 1:10:00 PM 7 3:10:00 PM 8 5:10:00 PM 8 7:10:00 PM 5 7:11:00 AM 0 9:11:00 AM 1 11:11:00 AM 12 1:11:00 PM 9 3:11:00 PM 7 5:11:00 PM 7 7:11:00 PM 5 7:12:00 AM 1 9:12:00 AM 1 11:12:00 AM 16 1:12:00 PM 9 3:12:00 PM 7 5:12:00 PM 5 7:12:00 PM 3 7:13:00 AM 1 9:13:00 AM 0 11:13:00 AM 14 1:13:00 PM 12 3:13:00 PM 4 5:13:00 PM 5 7:13:00 PMJ 4 7:14:00 AM 1 9:14:00 AM 1 11:14:00 AM 9 1:14:00 PM 17 3:14:00 PM 5 5:14:00 PM 9 7:14:00 PM 8 7:15:00 AM 0 9:15:00 AM 1 11:15:00 AM 12 1:15:00 PM 14 3:15:00 PM 6 5:15:00 PM 8 7:15:00 PM 14 7:16:00 AM 0 9:16:00 AM 3 11:16:00 AM 17 1:16:00 PM 17 3:16:00 PM 3 5:16:00 PM 7 7:16:00 PM 10 7:17:00 AM 0 9:17:00 AM 2 11:17:00 AM 17 1:17:00 PM 16 3:17:00 PM 2 5:17:00 PM 10 7:17:00 PM 12 7:18:00 AM 0 9:18:00 AM 3 11:18:00 AM 13 1:18:00 PM 20 3:18:00 PM 6 5:18:00 PM 7 7:18:00 PM 12 7:19:00 AM 0 9:19:00 AM 0 11:19:00 AM 13 1:19:00 PM 16 3:19:00 PM 4 5:19:00 PM 6 7:19:00 PM 12 7:20:00 AM 0 9:20:00 AM 2 11:20:00 AM 16 1:20:00 PrVj 17 3:20:00 PM 7 5:20:00 PM 12 7:20:00 PM 9 7:21:00 AM 0 9:21:00 AM 0 11:21:00 AM 14 1:21:00 PM 15 3:21:00 PMJ 7 5:21:00 PM 14 7:21:00 PM 12 7:22:00 AM 0 9:22:00 AM 0 11:22:00 AM 13 1:22:00 PM 12 3:22:00 PM 10 5:22:00 PM 9 7:22:00 PM 13 7:23:00 AM 1 9:23:00 AM 0 11:23:00 AM 18 1:23:00 PM 12 3:23:00 PM 7 5:23:00 PM 10 7:23:00 PMI 9 7:24:00 AM 0 9:24:00 AM 0 11:24:00 AM 20 1:24:00 PM 13 3:24:00 PM 8 5:24:00 PM 10 7:24:00 PM 3 7:25:00 AM 0 9:25:00 AM 1 11:25:00 AM 14 1:25:00 PM 14 3:25:00 PM 11 5:25:00 PM 12 7:25:00 PM 3 7:26:00 AM 0 9:26:00 AM 0 11:26:00 AM 15 1:26:00 PM 15 3:26:00 PM 12 5:26:00 PM 7 7:26:00 PM 4 7:27:00 AM 0 9:27:00 AM 1 11:27:00 AM 12 1:27:00 PIVI 15 3:27:00 PM 14 5:27:00 PM 11 7:27:00 PM 3 7:28:00 AM 0 9:28:00 AM 4 11:28:00 AM 16 1:28:00 PM 19 3:28:00 PM 12 5:28:00 PM 12 7:28:00 PM 2 7:29:00 AM 0 9:29:00 AM 0 11:29:00 AM 16 1:29:00 PM 18 3:29:00 PMJ 12 5:29:00 PM 9 7:29:00 PM 5 7:30:00 AM 0 9:30:00 AM 2 11:30:00 AM 14 1:30:00 PM 16 3:30:00 PMJ 12 5:30:00 PM 10 7:30:00 PM 2 7:31:00 AM 0 9:31:00 AM 0 11:31:00 AM 17 1:31:00 PM 19 3:31:00 PM 14 5:31:00 PM 13 7:31:00 PM 2 7:32:00 AM 0 9:32:00 AM 1 11:32:00 AM 16 1:32:00 PM 16 3:32:00 PM 13 5:32:00 PM 8 7:32:00 PM 2 7:33:00 AM 0 9:33:00 AM 0 11:33:00 AM 11 1:33:00 PM 16 3:33:00 PM 12 5:33:00 PM 13 7:33:00 PM 4 7:34:00 AM 0 9:34:00 AM 0 11:34:00 AM 12 1:34:00 PM 9 3:34:00 PM 9 5:34:00 PM 14 7:34:00 PM 3 7:35:00 AM 0 9:35:00 AM 0 11:35:00 AM 11 1:35:00 PM 9 3:35:00 PM 9 5:35:00 PM 9 7:35:00 PM 2 7:36:00 AM 0 9:36:00 AM 0 11:36:00 AM 8 1:36:00 PM 6 3:36:00 PM 9 5:36:00 PM 8 7:36:00 PM 1 7:37:00 AM 0 9:37:00 AM 0 11:37:00 AM 12 1:37:00 PM 5 3:37:00 PM 5 5:37:00 PM 12 7:37:00 PMI 0 7:38:00 AM 0 9:38:00 AM 0 11:38:00 AM 9 1:38:00 PM 2 3:38:00 PM 3 5:38:00 PM 5 7:38:00 PM 1 7:39:00 AM 0 9:39:00 AM 0 11:39:00 AM 14 1:39:00 PM 2 3:39:00 PM 8 5:39:00 PM 9 7:39:00 PM 3 7:40:00 AM 0 9:40:00 AM 2 11:40:00 AM 14 1:40:00 PM 2 3:40:00 PM 2 5:40:00 PM 9 7:40:00 PM 3 7:41:00 AM 0 9:41:00 AM 2 11:41:00 AM 16 1:41:00 PM 0 3:41:00 PM 2 5:41:00 PM 6 7:41:00 PM 2 7:42:00 AM 0 9:42:00 AM 4 11:42:00 AM 9 1:42:00 PM 3 3:42:00 PM 4 5:42:00 PM 4 7:42:00 PM 0 7:43:00 AM 0 9:43:00 AM 1 11:43:00 AM 10 1:43:00 PM 2 3:43:00 PM 2 5:43:00 PM 2 7:43:00 PM 0 7:44:00 AM 0 9:44:00 AM 1 11:44:00 AM 7 1:44:00 PM 2 3:44:00 PMj 6 5:44:00 PM 10 7:44:00 PM 1 7:45:00 AM 0 9:45:00 AM 2 11:45:00 AM 11 1:45:00 PM 2 3:45:00 PM 2 5:45:00 PM 10 7:45:00 PM 1 7:46:00 AM 0 9:46:00 AM 2 11:46:00 AM 7 1:46:00 PM 2 3:46:00 PM 5 5:46:00 PM 9 7:46:00 PM 1 7:47:00 AM 0 9:47:00 AM 0 11:47:00 AM 3 1:47:00 PM 4 3:47:00 PM 6 5:47:00 PM 10 7:47:00 PM 6 7:48:00 AM 0 9:48:00 AM 3 11:48:00 AM 2 1:48:00 PM 2 3:48:00 PM 7 5:48:00 PM 9 7:48:00 PM 6 7:49:00 AM 0 9:49:00 AM 1 11:49:00 AM 3 1:49:00 PM 1 3:49:00 PM 7 5:49:00 PM 12 7:49:00 PM 4 7:50:00 AM 1 9:50:00 AM 0 11:50:00 AM 4 1:50:00 PM 2 3:50:00 PM 11 5:50:00 PM 12 7:50:00 PM 3 7:51:00 AM 0 9:51:00 AM 0 11:51:00 AM 3 1:51:00 PM 3 3:51:00 PM 11 5:51:00 PM 7 7:51:00 PM 4 7:52:00 AM 0 9:52:00 AM 0 11:52:00 AM 3 1:52:00 PM 3 3:52:00 PM 10 5:52:00 PM 8 7:52:00 PM 3 7:53:00 AM 0 9:53:00 AM 0 11:53:00 AM 4 1:53:00 PM 5 3:53:00 PM 8 5:53:00 PM 12 7:53:00 PM 3 7:54:00 AM 0 9:54:00 AM 0 11:54:00 AM 5 1:54:00 PM 3 3:54:00 PM 6 5:54:00 PM 9 7:54:00 PM 2 7:55:00 AM 0 9:55:00 AM 0 11:55:00 AM 6 1:55:00 PM 5 3:55:00 PM 7 5:55:00 PM 6 7:55:00 PM 2 7:56:00 AM 0 9:56:00 AMI 0 1 11:56:00 AM 3 1:56:00 PM 8 3:56:00 PM 11 5:56:00 PM 7 7:56:00 PM 2 7:57:00 AM 0 1 9,57:00 AM 0 11:57:00 AM 2 1.57.00 PM 12 3:57:00 PM 10 5:57:00 PM 7 7:57:00 PMI 0 7:58:00 AMI 0 9:58:00 AMI 0 11:58:00 AM 1 2 1:58:00 PM 14 3:58:00 PM 10 5,58,00 PM 2 7:58:00 PM 0 7:59:00 AM 0 9:59:00 AM 1 11:59:00 AM 1 1:59:00 PM 13 3:59:00 PM 8 1. 5:59:00 PM 3 7:59:00 PMJ 0 Quality Counts Site Code: 14830321 Location: Federal Way Costco Gas Expansion Queue Date: 11/3/2018 Time Queue Time Queue Time Queue Time Queue Time Queue Time Queue Time Queue 6:00:00 AM 0 8:00:00 AM 0 10:00:00 AM 8 12:00:00 PM 13 2:00:00 PM 20 4:00:00 PM 12 6:00:00 PM 2 6:01:00 AM 0 8:01:00 AM 0 10:01:00 AM 4 12:01:00 PM 13 2:01:00 PM 22 4:01:00 PM 16 6:01:00 PM 3 6:02:00 AM 0 8:02:00 AM 0 10:02:00 AM 3 12:02:00 PM 13 2:02:00 PM 19 4:02:00 PM 14 6:02:00 PM 1 6:03:00 AM 0 8:03:00 AM 0 10:03:00 AM 2 12:03:00 PM 13 2:03:00 PM 22 4:03:00 PM 8 6:03:00 PM 1 6:04:00 AM 0 8:04:00 AM 0 10:04:00 AM 3 12:04:00 PM 11 2:04:00 PM 20 4:04:00 PM 13 6:04:00 PM 2 6:05:00 AMI 0 8:05:00 AM 0 1 10:05:00 AM 4 12:05:00 PMI 12 2:05:00 PMI 20 4:05:00 PM 13 6:05:00 PMf 3 6:06:00 AM 0 8:06:00 AM 0 10:06:00 AM 9 12:06:00 PM 14 2:06:00 PM 21 4:06:00 PM 10 6:06:00 PM 0 6:07:00 AM 0 8:07:00 AM 0 10:07:00 AM 9 12:07:00 PM 15 2:07:00 PM 23 4:07:00 PM 10 6:07:00 PM 4 6:08:00 AM 0 8:08:00 AM 0 10:08:00 AM 6 12:08:00 PM 16 2:08:00 PM 16 4:08:00 PM 10 6:08:00 PM 7 6:09:00 AM 0 8:09:00 AM 0 10:09:00 AM 6 12:09:00 PM 18 2:09:00 PM 17 4:09:00 PM 12 6:09:00 PM 6 6:10:00 AM 0 8:10:00 AM 0 10:10:00 AM 3 12:10:00 PM 17 2:10:00 PM 16 4:10:00 PM 9 6:10:00 PM 5 6:11:00 AM 0 8:11:00 AM 0 10:11:00 AMI 3 12:11:00 PM 19 2:11:00 PM 15 4:11:00 PM 10 6:11:00 PM 6 6:12:00 AMI 0 8:12:00 AM 0 10:12:00 AM 6 12:12:00 PMJ 25 2:12:00 PMJ 17 4:12:00 PMI 7 6:12:00 PM 5 6:13:00 AM 0 8:13:00 AM 1 10:13:00 AM 10 12:13:00 PMJ 25 2:13:00 PM 17 4:13:00 PM 8 6:13:00 PM 0 6:14:00 AM 0 8:14:00 AM 1 10:14:00 AM 11 12:14:00 PM 21 2:14:00 PM 18 4:14:00 PM 13 6:14:00 PM 0 6:15:00 AM 0 8:15:00 AM 0 10:15:00 AM 9 12:15:00 PM 22 2:15:00 PM 22 4:15:00 PM 13 6:15:00 PM 2 6:16:00 AM 0 8:16:00 AM 0 10:16:00 AM 10 12:16:00 PM 19 2:16:00 PM 21 4:16:00 PM 14 6:16:00 PM 3 6:17:00 AM 0 8:17:00 AM 0 10:17:00 AM 9 12:17:00 PM 19 2:17:00 PM 21 4:17:00 PM 13 6:17:00 PM 3 6:18:00 AM 0 8:18:00 AM 0 10:18:00 AM 9 12:18:00 PM 19 2:18:00 PM 20 4:18:00 PM 14 6:18:00 PM 3 6:19:00 AMJ 0 8:19:00 AM 0 10:19:00 ANAI 15 12:19:00 PM 19 2:19:00 PM 24 4:19:00 PM 14 6:19:00 PM 2 6:20:00 AM 0 8:20:00 AM 0 10:20:00 AM 16 12:20:00 PM 19 2:20:00 PMJ 22 4:20:00 PM 13 6:20:00 PM 8 6:21:00 AM 0 8:21:00 AM 0 10:21:00 AM 12 12:21:00 PM 19 221:00 PM 27 4:21:00 PM 9 6:21:00 PM 9 6:22:00 AM 0 8:22:00 AM 0 10:22:00 AM 15 12:22:00 PM 21 2:22:00 PM 23 4:22:00 PM 11 6:22:00 PM 8 6:23:00 AM 0 8:23:00 AM 2 10:23:00 AM 17 12:23:00 PM 21 2:23:00 PM 21 4:23:00 PM 12 6:23:0D PM 14 6:24:00 AM 0 9:24:00 AM 0 10:24:00 AM 16 12:24:00 PM 20 2:24:00 PM 23 4:24:00 PM 15 6:24:00 PM 17 6:25:00 AM 0 8:25:00 AM 0 10:25:00 AM 15 12:25:00 PM 23 2:25:00 PM 22 4:25:00 PM 13 6:25:00 PM 15 6:26:00 AM 0 8:26:00 AM 0 10:26:00 AMI 16 12:26:00 PM 21 2:26:00 PM 20 4:26:00 PM 14 6:26:00 PM 11 6:27:00 AM 0 8:27:00 AM 0 10:27:00 AM 14 12:27:00 PMI 21 2:27:00 PMI 22 4:27:00 PMJ 14 6:27:00 PM 5 6:28:00 AM 0 8:28:00 AM 0 10:28:00 AM 15 12:28:00 PMJ 16 2:28:00 PM 24 4:28:00 PM 10 6:28:00 PM 6 6:29:00 AM 0 8:29:00 AM 0 10:29:00 AM 10 12:29:00 PM 19 2:29:00 PM 24 4:29:00 PM 14 6:29:00 PM 10 6:30:00 AM 0 8:30:00 AM 0 10:30:00 AM 8 12:30:00 PM 19 2:30:00 PM 19 4:30:00 PM 13 6:30:00 PM 10 6:31:00 AM 0 8:31:00 AM 0 10:31:00 AM 10 12:31:00 PM 18 2:31:00 PM 18 4:31:00 PM 13 6:31:00 PM 4 6:32:00 AM 0 8:32:00 AM 0 10:32:00 AM 9 12:32:00 PM 12 2:32:00 PM 18 4:32:00 PM 16 6:32:00 PM 6 6:33:00 AM 0 8:33:00 AM 1 10:33:00 AMI 11 12:33:00 PM 12 2:33:00 PM 18 4:33:00 PM 10 6:33:00 PM 8 6:34:00 AM 0 8:34:00 AM 1 10:34:00 AM 9 12:34:00 PM 13 2:34:00 PMI 15 4:34:00 PM 10 6:34:00 PM 5 6:35:00 AM 0 8:35:00 AM 0 10:35:00 AM 11 12:35:00 PM 12 2:35:00 PM 16 4:35:00 PM 12 6:35:00 PMJ 6 6:36:00 AM 0 8:36:00 AM 0 10:36:00 AM 8 12:36:00 PM 14 2:36:00 PM 15 4:36:00 PM 14 6:36:00 PM 6 6:37:00 AM 0 8:37:00 AM 0 10:37:00 AM 13 12:37:00 PM 19 2:37:00 PM 20 4:37:00 PM 10 6:37:00 PM 2 6:38:00 AM 0 8:38:00 AM 0 10:38:00 AM 9 12:38:00 PM 22 2:38:00 PM 19 4:38:00 PM 10 6:38:00 PM 1 6:39:00 AM 0 8:39:00 AMI 0 10:39:00 AM 11 12:39:00 PM 21 2:39:00 PM 14 4:39:00 PM 12 6:39:00 PM 2 6:40:00 AM 0 8:40:00 AM 0 10:40:00 AM 11 12:40:00 PM 17 2:40:00 PM 18 4:40:00 PM 10 6:40:00 PM 3 6:41:00 AMj 0 8:41:00 AM 0 10:41:00 AMI 10 12:41:00 PM 17 2:41:00 PM 18 4:41:00 PM 8 6:41:00 PM 5 6:42:00 AM 0 8:42:00 AM 0 10:42:00 AM 10 12:42:00 PMI 19 2:42:00 PM 17 4:42:00 PM 9 6:42:00 PM 5 6:43:00 AM 0 8:43:00 AM 0 10:43:00 AM 5 12:43:00 PM 16 2:43:00 PM 16 4:43:00 PM 10 6:43:00 PM 6 6:44:00 AM 0 8:44:00 AM 0 10:44:00 AM 4 12:44:00 PM 18 2:44:00 PM 15 4:44:00 PM 10 6:44:00 PM 6 6:45:00 AM 0 8:45:00 AM 0 10:45:00 AM 10 12:45:00 PM 13 2:45:00 PM 12 4:45:00 PM 9 6:45:00 PM 6 6:46:00 AM 0 8:46:00 AM 1 10:46:00 AM 11 12:46:00 PM 17 2:46:00 PMI 9 4:46:00 PM 9 6:46:00 PM 6 6:47:00 AM 0 8:47:00 AM 1 10:47:00 AM 6 12:47:00 PM 12 2:47:00 PM 11 4:47:00 PM 12 6:47:00 PM 2 6:48:00 AMI 0 8:48:00 AM 1 10:48:00 AM 10 12:48:00 PM 11 2:48:00 PM 5 4:49:00 PM 9 6:48:00 PM 3 6:49:00 AMI 0 8:49:00 AM 0 10:49:00 AM 13 1 12:49:00 PM 12 2:49:00 PM 6 4:49:00 PM 5 6:49:00 PM 4 6:50:00 AM 0 8:50:00 AM 0 10:50:00 AM 14 12:50:00 PM 14 2:50:00 PM 6 4:50:00 PM 5 6:50:00 PM 3 6:51:00 AM 0 8:51:00 AM 1 10:51:00 AM 14 12:51:00 PM 18 2:51:00 PM 5 4:51:00 PM 7 6:51:00 PM 2 6:52:00 AM 0 8:52:00 AM 0 10:52:00 AM 16 12:52:00 PM 12 2:52:00 PM 8 4:52:00 PM 7 6:52:00 PM 0 6:53:00 AM 0 8:53:00 AM 0 10:53:00 AM 18 12:53:00 PM 13 2:53:00 PM 9 4:53:00 PM 5 6:53:00 PM 0 6:54:00 AM 0 8:54:00 AM 1 10:54:00 AM 15 12:54:00 PM 16 2:54:00 PM 10 4:54:00 PM 9 6:54:00 PM 1 6:55:00 AM 0 8:55:00 AM 1 1 10:55:00 AM 13 12:55:00 PMI 17 2:55:00 PM 10 4:55:00 PM 11 6:55:00 PM 1 6:56:00 AM 0 8:56:00 AM 0 10:56:00 AM 13 1 12:56:00 PM 15 2:56:00 PM 6 4:56:00 PM 16 6:56:00 PM 2 6:57:00 AM 0 8:57:00 AM 0 1 10:57,00 AMI 14 1 12:57:00 PMJ 14 2:57:00 PM 10 4:57:00 PM 16 6:57:00 PM 0 6:58:00 AM 0 8.58.00 AMT 2 1 10:58:00 AMI 10 1 12:58:00 PMJ 13 2:58:00 PM 11 4:58:00 PM 15 6:58:00 PM 2 6:59:00 AM 0 8:59:00 AMI 2 1 10:59:00 AMI 13 1 12:59:00 PMJ 13 2:59:00 PM 13 4:59:00 PM 12 1 6:59:00 PM 2 a: Quality Counts raq,\SPOR C O'u tC Site Code: 14830321 Location: Federal Way Costco Gas Expansion Queue Date: 11/3/2018 Time Queue Time Queue Time Queue Time Queue Time I Queue Time Queue Time Queue 7:00:00 AM 0 9:00:00 AM 4 11:00:00 AM 14 1:00:00 PM 12 3:00:00 PM 17 5:00:00 PM 13 7:00:00 PM 1 7:01:00 AM 0 9:01:00 AM 3 11:01:00 AM 15 1:01:00 PM 15 3:01:00 PM 20 5:01:00 PM 14 7:01:00 PM 1 7:02:00 AM 1 9:02:00 AM 2 11:02:00 AM 12 1:02:00 PM 17 3:02:00 PM 24 5:02:00 PM 17 7:02:00 PM 1 7:03:00 AM 0 9:03:00 AM 0 11:03:00 AM it 1:03:00 PM 22 3:03:00 PM 23 5:03:00 PM 17 7:03:00 PM 0 7:04:00 AM 0 9:04:00 AM 0 11:04:00 AM 8 1:04:00 PM 14 3:04:00 PM 19 5:04:00 PM 15 7:04:00 PM 0 7:05:00 AM 1 0 9:05:00 AMI 0 11:05:00 AM 8 1:05:00 PMI 21 3:05:00 PM 22 5:05:00 PMI 16 7:05:00 PMI 0 7:06:00 AM 0 9:06:00 AM 0 11:06:00 AM 3 1:06:00 PM 26 3:06:00 PM 22 5:06:00 PM 14 7:06:00 PM 0 7:07:00 AM 0 9:07:00 AM 0 11:07:00 AM 5 1:07:00 PM 23 3:07:00 PMJ 21 5:07:00 PM 18 7:07:00 PM 0 7:08:00 AM 0 9:08:00 AM 0 11:08:00 AM 8 1:08:00 PM 19 3:08:00 PM 21 5:08:00 PM 17 7:08:00 PM 0 7:09:00 AM 0 9:09:00 AM 0 11:09:00 AM 7 1:09:00 PM 22 3:09:00 PM 19 5:09:00 PM 19 7:09:00 PM 0 7:10:00 AM 0 9:10:00 AM 0 11:10:00 AM 13 1:10:00 PM 19 3:10:00 PM 20 5:10:00 PM 16 7:10:00 PM 0 7:11:00 AM 0 9:11:00 AM 0 11:11:00 AMI 13 1:11:00 PM 21 3:11:00 PM 18 5:11:00 PM 16 7:11:00 PM 0 7:12:00 AM 0 9:12:00 AM 2 11:12:00 AM 14 1:12:00 PMI 20 3:12:00 PM 22 5:12:00 PM 15 7:12:00 PM 0 7:13:00 AM 0 9:13:00 AM 1 11:13:00 AM 14 1:13:00 PM 19 3:13:00 PM 19 5:13:00 PM 17 7:13:00 PM 0 7:14:00 AM 0 9:14:00 AM 1 11:14:00 AM 15 1:14:00 PM 19 3:14:00 PM 14 5:14:00 PM 19 7:14:00 PM 0 7:15:00 AM 0 9:15:00 AM 1 11:15:00 AM 15 1:15:00 PM 19 3:15:00 PM 12 5:15:00 PM 17 7:15:00 PM 0 7:16:00 AM 0 9:16:00 AM 1 11:16:00 AM 20 1:16:00 PM 21 3:16:00 PM 13 5:16:00 PM 15 7:16:00 PM 0 7:17:00 AM 0 9:17:00 AM 0 11:17:00 AM 24 1:17:00 PM 21 3:17:00 PM 17 5:17:00 PM 19 7:17:00 PM 0 7:19:00 AM 0 9:18:00 AM 1 0 11:18:00 AMI 22 1:18:00 PM 25 3:18:00 PM 18 5:18:00 PM 15 7:18:00 PM 0 7:19:00 AM 0 9:19:00 AM 0 11:19:00 AM 21 1:19:00 PM 22 3:19:00 PM 21 5:19:00 PMI 20 7:19:00 PM 0 7:20:00 AM 0 9:20:00 AM 0 11:20:00 AM 21 1:20:00 PM 18 3:20:00 PM 24 5:20:00 PM 22 7:20:00 PM 0 7:21:00 AM 0 9:21:00 AM 0 11:21:00 AM 16 1:21:00 PM 21 3:21:00 PM 25 5:21:00 PM 14 7:21:00 PM 0 7:22:00 AM 0 9:22:00 AM 0 11:22:00 AM 19 1:22:00 PM 21 3:22:00 PM 20 5:22:00 PM 16 7:22:00 PM 0 7:23:00 AM 0 9:23:00 AM 0 11:23:00 AM 18 1:23:00 PM 21 3:23:00 PM 18 5:23:00 PM 19 7:23:00 PM 1 7:24:00 AM 0 9:24:00 AM 0 11:24:00 AM 15 1:24:00 PM 16 3:24:00 PM 18 5:24:00 PM 20 7:24:00 PM 0 7:25:00 AM 0 9:25:00 AM 0 11:25:00 AM 17 1:25:00 PM 16 3:25:00 PM 15 5:25:00 PM 18 7:25:00 PMI 0 7:26:00 AM 0 9:26:00 AM 0 11:26:00 AM 15 1:26:00 PM 19 3:26:00 PM 11 5:26:00 PM 17 7:26:00 PM 0 7:27:00 AM 0 9:27:00 AM 1 11:27:00 AM 11 1:27:00 PM 20 3:27:00 PM 14 5:27:00 PM 17 7:27:00 PM 0 7:28:00 AM 0 9:28:00 AM 1 11:28:00 AM 14 1:28:00 PM 19 3:28:00 PM 15 5:28:00 PM 17 7:28:00 PM 0 7:29:00 AM 0 9:29:00 AM 1 11:29:00 AM 17 1:29:00 PM 17 3:29:00 PM 16 5:29:00 PM 16 7:29:00 PM 0 7:30:00 AM 0 9:30:00 AM 3 11:30:00 AM 11 1:30:00 PM 16 3:30:00 PM 13 5:30:00 PM 14 7:30:00 PM 0 7:31:00 AM 0 9:31:00 AM 0 11:31:00 AM 16 1:31:00 PM 18 3:31:00 PM 13 5:31:00 PM 19 7:31:00 PM 0 7:32:00 AM 0 9:32:00 AM 1 11:32:00 AM 14 1:32:00 PM 21 3:32:00 PM 15 5:32:00 PM 13 7:32:00 PM 0 7:33:00 AM 0 9:33:00 AM 4 11:33:00 AM 15 1:33:00 PM 16 3:33:00 PMJ 18 5:33:00 PM 9 7:33:00 PM 0 7:34:00 AM 0 9:34:00 AM 3 11:34:00 AM 14 1:34:00 PM 18 3:34:00 PM 15 5:34:00 PM 12 7:34:00 PM 0 7:35:00 AM 0 9:35:00 AM 2 11:35:00 AM 16 1:35:00 PM 20 3:35:00 PM 14 5:35:00 PM 11 7:35:00 PM 0 7:36:00 AM 0 9:36:00 AM 0 11:36:00 AM 19 1:36:00 PM 20 3:36:00 PM 17 5:36:00 PM 13 7:36:00 PM 0 7:37:00 AM 0 9:37:00 AM 2 11:37:00 AM 15 1:37:00 PM 19 3:37:00 PM 16 5:37:00 PM 9 7:37:00 PM 0 7:38:00 AM 0 9:38:00 AM 1 11:38:00 AM 17 1:38:00 PM 17 3:38:00 PM 18 5:38:00 PM 9 7:38:00 PM 0 7:39:00 AM 0 9:39:00 AM 4 11:39:00 AM 18 1:39:00 PM 21 3:39:00 PM 18 5:39:00 PM 11 7:39:00 PM 0 7:40:00 AM 0 9:40:00 AM 4 11:40:00 AM 14 1:40:00 PM 18 3:40:00 PM 14 5:40:00 PM 11 7:40:00 PM 0 7:41:00 AM 0 9:41:00 AM 3 11:41:00 AM 11 1:41:00 PM 18 3:41:00 PM 14 5:41:00 PM 11 7:41:00 PM 0 7:42:00 AM 0 9:42:00 AM 2 11:42:00 AM 12 1:42:00 PM 19 3:42:00 PM 20 5:42:00 PM 9 7:42:00 PM 0 7:43:00 AM 0 9:43:00 AM 1 11:43:00 AM 12 1:43:00 PM 20 3:43:00 PM 25 5:43:00 PM 9 7:43:00 PM 0 7:44:00 AM 0 9:44:00 AM 2 11:44:00 AM 11 1:44:00 PM 21 3:44:00 PM 27 5:44:00 PM 4 7:44:00 PM 0 7:45:00 AM 0 9:45:00 AM 2 11:45:00 AMI 7 1:45:00 PM 20 3:45:00 PM 22 5:45:00 PM 6 7:45:00 PM 0 7:46:00 AM 0 9:46:00 AM 1 11:46:00 AM 8 1:46:00 PM 23 3:46:00 PM 22 5:46:00 PML 8 7:46:00 PM 0 7:47:00 AM 0 9:47:00 AM 1 11:47:00 AM 12 1:47:00 PM 25 3:47:00 PM 21 5:47:00 PM 6 7:47:00 PM 0 7:48:00 AM 0 9:48:00 AM 3 11:48:00 AM 7 1:48:00 PM 18 3:48:00 PM 23 5:48:00 PM 4 7:48:00 PM 0 7:49:00 AM 0 9:49:00 AM 2 11:49:00 AM 6 1:49:00 PM 22 3:49:00 PM 22 5:49:00 PM 1 7:49:00 PM 0 7:50:00 AM 0 9:50:00 AM 2 11:50:00 AM 11 1:50:00 PM 26 3:50:00 PM 20 5:50:00 PM 0 7:50:00 PM 0 7:51:00 AM 0 9:51:00 AM 3 11:51:00 AM 12 1:51:00 PM 23 3:51:00 PM 21 5:51:00 PM 0 7:51:00 PM 0 7:52:00 AM 0 9:52:00 AM 2 11:52:00 AMI 12 1:52:00 PM 21 3:52:00 PM 15 5:52:00 PM 1 7:52:00 PM 0 7:53:00 AM 0 9:53:00 AM 6 11:53:00 AM 11 1:53:00 PMj 22 3:53:00 PM 18 5:53:00 PMJ 1 7:53:00 PM 0 7:54:00 AM 0 9:54:00 AM 9 11:54:00 AM 10 1:54:00 PM 23 3:54:00 PM 15 5:54:00 PM 0 7:54:00 PM 0 7:55:00 AM 0 9:55:00 AM 2 11:55:00 AM 12 1:55:00 PM 22 3:55:00 PM 11 5:55:00 PM 0 7:55:00 PM 0 7:56:00 AM 0 9:56:00 AM 4 11:56:00 AM 12 1:56:00 PM 20 3:56:00 PM 11 5:56:00 PM 1 7.56.00 PM 0 7:57:00 AM 0 9:57:00 AM 8 11:57:00 AM 12 1:57:00 PM 23 3:57:00 PM 17 5:57:00 PM 3 7:57:00 PM 0 7:58:00 AM 0 9.58.00 AM 6 11:58:00 AM 12 1:58:00 PM 20 3:58:00 PM 15 5:58:00 PM 4 7:58:00 PM 0 7:59:00 AM 0 9:59:00 AM 8 11:59:00 AM 14 1:59:00 PM 23 3:59:00 PM 11 1 5:59:00 PM 3 7:59:00 PM 0 BARGWAUSEN March 13, 2020 Hand Delivery (253) 835-2700 Natalie Kamieniecki Associate Planner City of Federal Way Public Works Department City Hall 33325 8th Avenue South Federal Way, WA 98003 RE: Responses to Technical Review Comments Costco - Fuel Facility Expansion 35100 Enchanted Parkway, Federal Way, Washington 98003 Use Permit Process II: 19-101782-UP Costco Loc. No. 061 / Our Job No. 6076 Dear Natalie: RESUBMITTED MAR 16 ILI23 CITY OF FED WAY COMMUNfiY DE'VE!-,C6+i_•.— We have revised the plans and technical documents for the above -referenced project in accordance with your comment letter dated January 10, 2020. Enclosed are the following documents for your review and approval: 1. One (1) copy of the Resubmittal Information Form 2. Four (4) copies of the updated Plan Set prepared by Barghausen Consulting Engineers, Inc. dated March 13, 2020, including: a. Preliminary Site Plan b. Preliminary Channelization Plan c. Preliminary Clearing and Grading Plan d. Preliminary Drainage, Grading, and Right -of -Way Plan e. Preliminary Water Quality Improvement Plan f. Site Cross Sections g. Fuel Truck Route Exhibit h. Passenger Vehicle Turn Exhibit 3. Four (4) copies of the Preliminary Landscape Plan prepared by Barghausen Consulting Engineers, Inc. dated March 13, 2020 BARGHAUSEN CONSULTING' ENGINEERS, INC. 18215 72ND AVENUE SOUTH KENT, WA98f132 P) 425-251-6222 F) 425-251-8782 BRANCH OFFICES: TUMWATER, WA KLAMATH FALLS, OR LONG BEACH, CA ROSEVILLE, CA SAN DIEGO, CA barghausen.com Natalie Kamieniecki Associate Planner City of Federal Way Public Works Department -2- March 13, 2020 The following outline provides each of your comments in italics exactly as written, along with a narrative response describing how each comment was addressed: The Public Works Traffic Division has finished its review of the November 22, 2019, submitted materials. The following technical review items must be address prior to Public Works approval. 1. Revise the westerly driveway on South 352 d Street to provide a 14-foot through plus right (Thru+Rt) lane and a 16-foot entry lane. Please see exhibit. Response: The enclosed site plan is updated to include revisions to the westerly driveway on South 352nd Street in order to provide a 14-foot through plus right -turn lane and a 16-foot entry lane. 2. The westerly driveway on South 352 d Street must be improved to meet current standards. Response: The revisions to the westerly driveway are designed in accordance with the Federal Way Public Works Department Development Standards. 3. Submit a Vehicle Turning Diagram for the right turn maneuver out of the internal gas station driveway, and the southbound right turn maneuver onto South 352nd Street. This diagram will show how the appropriate design vehicle leave the site without encroaching onto opposing traffic lanes, or mounting a curb. Response: A Truck Turning Diagram is enclosed, which shows the path of the Costco Fuel Delivery Truck. 4. Provide a channelization plan showing lane width, signage, striping, etc. to the city for review. Signage and channelization plans shall be per MUTCD. Response: A channelization plan is enclosed, which shows the lane width, signage, and directional striping for the drive aisle adjacent to the fuel facility, and demonstrates compliance with the MUTCD standards. 5. The submitted plans must depict improvements and/or right-of-way dedication consistent with the approved right-of-way modification of June 19, 2019. Natalie Kamieniecki Associate Planner City of Federal Way Public Works Department -3- March 13, 2020 Response: This item will be addressed through separate correspondence. The previously shown 4-foot dedication has been removed for consistency with the separate correspondence. We believe that the above responses, together with the enclosed revised plans and technical documents, address all of the comments in your letter dated January 10, 2020. Please review and approve the enclosed at your earliest convenience. If you have questions or need additional information, please do not hesitate to contact me at this office. Thank you. Sincerely, Charles Moseley Senior Project Manager CM/ps 6076c.149.docx enc: As Noted cc: Kim Katz, Costco Wholesale Corporation John Ellingsen, Ellingsen & Company, Inc. Jay S. Grubb, Barghausen Consulting Engineers, Inc. Chris S. Ferko, Barghausen Consulting Engineers, Inc. Sean Anderson, Barghausen Consulting Engineers, Inc. Mettie Brasel, Barghausen Consulting Engineers, Inc. 4 eARGWAUSE1N Fueling Facility Expansion Use Process II Permit Project Narrative Costco Wholesale 35100 Enchanted Parkway South Federal Way, Washington 98003 APN No. 219260-0290 Costco No. 61 / Our Job No. 6076 March 29, 2019 Project Location: RESUBMITTED NOV 2 2 2919 CITY OF FEDEPAL WAY COMMArry DEVELOPMENT The expansion will occur on the north side of the existing -Costco fuel facility. The property is zoned Commercial Enterprise (CE) in which the fuel facility is an allowed use. The existing fuel facility was previously approved under Use Permit No. 00-102669-00-UP. Project Description: Overview Costco is seeking a Use Process 11 Permit to allow for the expansion of the existing fuel facility. The project includes installation of four (4) new multi -product dispensers (MPDs) with an expansion of the overhead canopy, relocation of the controller enclosure, and associated site improvements. The intent of the expansion is to provide a more efficient fuel purchasing experience for Costco members. Grading Site grading will be limited to the installation of canopy footings, under canopy slab, queueing area, and site stormwater improvements. Parking and Circulations The project will provide an overall total of 783 stalls for the Costco development. City parking standards require a minimum of one (1) parking stall for every 300 square feet of gross floor area for bulk retail uses and one (1) parking stall for every 300 square feet of gross floor area for vehicle service stations, excluding areas under the pump island canopies. The existing warehouse measures 156,250 square feet in size and, therefore, a minimum of 521 parking stalls is required for the Costco development. Off-street parking for the Costco site will continue to comply with City parking standards after the fuel facility expansion. The fuel facility will continue to provide single -direction circulation with a full-length bypass lane between each dispenser island. To facilitate circulation into and out of the center fueling position, the design has incorporated a spacing of twenty-eight (28) feet between the center and front dispensers. Transportation The primary purpose of the fuel station expansion is to improve upon the current operations and reduce queueing that the existing facility experiences. The market area of the Federal Way Costco is already defined through existing membership and operations. Since the membership of Costco does not change with the expansion of a fuel facility, demand for gas at the Federal Way Costco will not change. BARGHAUSEN CONSULTING ENGINEERS, INC. 1821572ND AVENUE SOUTH KENT, WA98032 P) 425-251-6222 F) 425-251-8782 BRANCH OFFICES: TUMWATER, WA KLAMATH FALLS, OR LONG BEACH, CA ROSEVILLE, CA SAN DIEGO, CA barghausen.com A minimal increase in trips is expected with the expansion and other Costco locations where gas stations have been expanded show this small increase in trips is greatly outweighed by the benefits of providing more pumps to expedite the processing of vehicles during peak times. Similar to opening more cashiers/check-out lanes at a supermarket, the additional "servers" available do not determine how many people wait in line but serve to process those waiting in line more efficiently and quickly. Reduced queues and wait times have been consistently observed at expanded Costco fuel stations constructed with a higher number of fueling positions. The average time it takes for a vehicle to fuel does not significantly change by the addition of more fueling positions but because there are more fueling positions available to process vehicles, all expansions were found to have overall more efficient processing of vehicles, shorter wait times, shorter queues, and less idling after the expansion. Architectural_ ae_s_igr The canopy expansion is designed to match the existing Costco fuel canopy and includes metal -wrapped canopy fascia with elevation changes on the north and south facades, and CMU wrapped canopy columns. City design standards require facades longer than 60 feet and visible from a right-of-way to incorporate facade treatments, as well as maintaining overall design continuity by using similar elements throughout the project such as architectural style and features, materials, colors, and textures. The canopy will maintain similar facade treatments to remain consistent with the City Code. Lighting and Si_gnage The under -canopy lighting will be updated to flat lens LED lighting fixtures for the canopy. Sign lighting will also be LED. All lighting will be confined to the subject property and no glare or direct light will be cast on adjacent properties or right-of-ways. LED lighting is more efficient and results in less light spillage than the existing Metal Halide lighting. The existing canopy signs are approximately 26 square feet in size and will be replaced with new 20-square-foot "Costco Wholesale" signs located on the north and south facades of the canopy. Landscap_inq The project will reduce 90 square feet of landscaping for the Costco development and the site will provide approximately 40,635 square feet of landscaping. City landscape standards require a minimum of twenty- two square feet of landscape coverage per parking stall provided for the Costco development. Based on the ratio, the city requires a minimum of 15,246 square feet of landscaping. The Costco development will continue to exceed City landscape standards after the expansion of the fuel facility. Construction Construction of the fuel facility expansion will be completed in a single phase and commence after approval of the applicable permits. Depending on construction sequencing, the existing fuel facility may remain open during construction. Purpose of Request: Use Process II Permit Pursuant to Federal Way Revised Code Section 19.60.050, a Use Process II Permit shall be approved if the following findings are met: Site plan criteria. a) It is consistent with the comprehensive plan; Response: The project does not change the current use of the site. The project site is zoned Commercial Enterprise (CE) with the same designation in the Comprehensive Plan. The fuel facility is a permitted use subject to a Use Process II Permit within the CE zone and is consistent with the requirements of the Commercial Enterprise Comprehensive Plan designation indicated in the table below. 2- Requirement Response LUG5: Develop a quality commercial enterprise The project is an expansion of the existing fuel environment characterized by a viable, vibrant, facility; the project will refresh and update the and attractive mix of commercial, retail, office, look of the fuel facility and improve its operations industrial, and supportive uses and utilize thereby enhancing its contribution to the mix of locational and design criteria to ensure uses within the shopping. compatibility between uses. LUP35: Allow a broad range of commercial, The Costco fuel facility will maintain the quality retail, office, industrial, and supportive uses to service and operational standards. The meet the needs of workers and consumers, in expansion will promote a more efficient fueling well integrated, well -functioning, high quality experience for the workers and consumers that developments. utilize the facility. LUP36: Require development to be compatible The project will not change the current use of the and well integrated into its surroundings and site or impact the location of the fuel facility. The adjacent zones through site and building design project will continue to be compatible with the and development standards that reduce or surrounding zones and adjacent uses. The fuel eliminate land use conflicts and nuisance facility will maintain quality operational standards impacts; ensure project aesthetics; promote after the expansion. sharing of public facilities and services; and improve vehicular and pedestrian traffic flow and safety, including access control and off-street interconnectivity between adjoining properties where feasible. LUP37: Allow general and specialty retail uses The fuel facility provides a general service for the that serve the needs of people employed or people employed and residing in the local area, residing in the local area, as well as "destination" and the broader consumer travelling via retail and wholesale businesses that may serve Interstate 5 and Highway 18. The purpose of the a broader consumer base vis-a-vis the area's expansion is to provide a more efficient fuel convenient access to Interstate 5 and Highway purchasing experience for the Costco members 18. utilizing the Federal Way facility. LUP38: Do not allow heavy industrial uses on The project is a commercial use surrounded by properties that adjoin residential zones. commercial zoning. b) It is consistent with all applicable provisions of this title; Response: The fuel facility will continue to be harmonious with the character of the Costco development and surrounding area with respect to landscaping, scale, lot coverage, and similar site design aspects. The fuel facility will continue to operate similarly to the existing fuel facility and will comply with all local, state, and federal permitting and environmental requirements. The fuel facility will comply with all applicable development standards as detailed in the response table provided under below. Deveionment Standard Requirement Response Maximum Building Height 40 feet The maximum height of the canopy is approximately 17 feet from finished grade with a 14-foot 6-inch clearance. Front Setback 20 feet The project will not encroach into the setback area. -3- Side -Yard Setback None The project will not encroach into the setback area. The project will not encroach Rear -Yard Setback None into the setback area. Pump Island Setback 20 feet The project will not encroach into the setback area. Canopy Setback 20 feet The project will not encroach into the setback area. Off -Street Parking One (1) parking space for The project will provide 783 every 300 square feet of parking stalls. gross floor area for bulk retail uses. One (1) parking space for every 300 square feet of gross floor area for vehicle service stations, excluding areas under the pump island canopies. Total amount of parking required, based on ratios above, is 521 parking stalls. Landscaping Minimum of twenty-two The project will provide square feet of landscape approximately 40,635 square coverage per parking stall. feet of landscaping for the Total amount of landscaping Costco development. required, based on the above ratios is 15,246 square feet. Signs Two (2) wall mounted signs The project will include one with a maximum sign area of (1) 20-square-foot "Costco 7 percent of the building Wholesale" sign on the north facade area and a maximum and south facades of the individual sign area of 240 canopy. square feet. Approximately 50-square feet of signage is allowed on the north and south canopy facades. Exterior Lighting The applicant shall select, Under -canopy lighting will be place and direct light sources installed with flat lens LED both directable and non- lighting fixtures and lighting directable so that glare will be directed downward to produced by any light source, prevent offsite glare. Sign to the maximum extent lighting will also be LED. possible, does not extend to adjacent properties or to the right-of-way. The applicant shall utilize energy efficient -light sources. [E Design Criteria All building facades that are The design will match the both longer than 60 feet and existing structure and will are visible from either a right- include metal -wrapped of -way or residential use or canopy fascia with elevation zone shall incorporate changes on the north and facade treatment, such as south facades, and CMU facade modulation, wrapped canopy columns. landscape screening, or incorporate a pedestrian plaza. c) It is consistent with the public health, safety, and welfare; Response: The project will not change the existing fuel facility use and will comply with all local, state, and federal permitting requirements required to protect the public health, safety, and welfare. The project is compatible with the established commercial character of the surrounding land uses. d) The streets and utilities in the area of the subject property are adequate to serve the anticipated demand from the proposal, Response: Per Kittelson's "Trip Generation Memo" dated January 15, 2019, the streets in the area are adequate to serve the anticipated demand from the fuel facility expansion. The utilities serving the existing facility are adequate to meet the anticipated demand of the fuel facility expansion. e) The proposed access to the subject property is at the optimal location and configuration for access; and Response: Per Kittelson's "Trip Generation Memo" dated January 15, 2019, the project does not impact the existing location and configuration of the access onto the site and the expansion will improve the on -site circulation, resulting in shorter queue wait times, and provide a more efficient fuel purchasing experience for Costco members. t) Traffic safety impacts for all modes of transportation, both on and off site, are adequately mitigated. Response: Per Kittelson's "Trip Generation Memo" dated January 15, 2019, the project will increase by 52 new peak hour trips. The project will not impact traffic safety offsite and will improve on -site circulation by reducing queues, which will decrease the possibility of fuel facility traffic flowing over to the adjacent parking areas. Community design guideline decisional criteria. a) It is consistent with site design standards set forth in FWRC 19.115.050 for all zoning districts; Response: The project will not change the current use of the site and will maintain the existing site design. The project will meet the standards set forth in FWRC 19.115.050, provided in the table below: •5. Requirement Response General Criteria FWRC 19.115.060 (1) a) Natural amenities such as views, The project is an expansion of an existing significant or unique trees, or structure and will not impact the surrounding groupings of trees, creeks, riparian natural amenities. corridors, and similar features unique to the site should be incorporated into the design. b) Pedestrian areas and amenities The project will maintain the existing landscape should be incorporated in the overall and pedestrian amenities. site design. Pedestrian areas include but are not limited to outdoor plazas, arcades, courtyards, seating areas, and amphitheaters. Pedestrian amenities include but are not limited to outdoor benches, tables and other furniture, balconies, gazebos, transparent glass at the ground floor, and landscaping. c) Pedestrian areas should be easily The landscaping around the fuel facility will seen, accessible, and located to take continue to provide a visual aesthetic that advantage of surrounding features exceeds the Federal Way landscaping such as building entrances, open requirements. spaces, significant landscaping, unique topography or architecture, and solar exposure. d) Project designers shall strive for The fuel facility will remain consistent with the overall design continuity by using existing Costco warehouse. The expansion will similar elements throughout the match the architectural style, colors, and project such as architectural style and textures of the existing fuel facility. features, materials, colors, and textures. e) Place physical features, activities, and The existing fuel facility is sited at southwest people in visible locations to maximize corner of the site with visibility to Enchanted the ability to be seen, and therefore, Parkway, South 352nd Street and the site. An discourage crime. For example, place attendant is present during all hours of cafes and food kiosks in parks to operation for customer service, fuel operations increase natural surveillance by park and safety. users, and place laundry facilities near play equipment in multiple -family residential development. Avoid barriers, such as tall or overgrown landscaping or outbuildings, where they make it difficult to observe activity. f) Provide access control by utilizing The project provides physical barriers to protect physical barriers such as bollards, the fuel facility equipment, security cameras to fences, doorways, etc., or by security monitor the facility, and an attendant present hardware such as locks, chains, and during hours of operation. alarms. Where appropriate, utilize -s- security guards. All of these methods result in increased effort to commit a crime and, therefore, reduce the potential for it to happen. g) Design buildings and utilize site The fuel facility is designed to reflect the design that reflects ownership. For character of the main Costco warehouse. The example, fences, paving, art, signs, signs, landscaping, paving, and well maintained good maintenance, and landscaping property present a strong sense of ownership. are some physical ways to express An attendant is present during hours of ownership. Identifying intruders is operation for customer service, fueling much easier in a well-defined space. operations, and maintain the cleanliness of the An area that looks protected gives the facility. impression that greater effort is required to commit a crime. A cared - for environment can also reduce fear of crime. Areas that are run down and the subject of graffiti and vandalism are generally more intimidating than areas that do not display such characteristics. Surface parking lots FWRC 19.115.060 (2) a) Site and landscape design for parking Site and landscape design for parking lots will lots are subject to the requirements of continue to meet the requirements found in Chapter 19.125. Chapter 19.125. i. Within the CE zone, type III i. The project provides a 19-foot Type III landscaping 10 feet in width shall landscaping buffer along the frontage of be provided along all property SR 161 and a 13-foot Type III lines abutting public rights -of -way landscaping buffer along the frontage of and access easements. (FWRC S. 352nd Street. 19.125.060(9)(a)) ii. The project provides a 20-foot ii. Within the CE zone, type III landscape buffer along the interior landscaping five feet in width shall property line abutting the parcel be provided along all perimeter lot containing the warehouse facility. lines not abutting residential or public right-of-ways. (FWRC 19.125.060(9)(c)) b) Vehicle turning movements shall be The parking area to the north will continue to minimized. Parking aisles without loop meet the parking and circulation areas and will access are discouraged. Parking and be clearly delineated with the appropriate vehicle circulation areas shall be signage and ground painting. clearly delineated using directional signage. c) Driveways shall be located to be The project will not impact the existing visible from the right-of-way but not driveways or curb cuts. impede pedestrian circulation on -site or to adjoining properties. Driveways should be shared with adjacent properties to minimize the number of driveways and curb cuts. MrA d) Multi -tenant developments with large The requirement is not applicable to the project surface parking lots adjacent to a because the project will not add a new right-of-way are encouraged to structure, but will expand the existing canopy incorporate retail pads against the structure adjacent to the right-of-way. right-of-way to help break up the large areas of pavement. e) See FWRC 19.115.090 for See the responses presented under Criteria b supplemental guidelines. below. Parking Structures (including parking floors located within commercial buildings) FWRC 19.115.060 (3) a) The bulk (or mass) of a parking The requirement is not applicable to the structure as seen from the right-of-way project. A parking structure is not within the should be minimized by placing its scope of the project. short dimension along the street edge. The parking structure should include active uses such as retail, offices or other commercial uses at the ground level and/or along the street frontage. b) Parking structures which are part of The requirement is not applicable to the new development shall be project. A parking structure is not within the architecturally consistent with exterior scope of the project. architectural elements of the primary structure, including rooflines, facade design, and finish materials. c) Parking structures should incorporate The requirement is not applicable to the methods of articulation and accessory project. A parking structure is not within the elements, pursuant to FWRC scope of the project. 19.115.060(3)(b), on facades located above ground level. d) Buildings built over parking should not The requirement is not applicable to the appear to "float' over the parking area, project. A parking structure is not within the but should be linked with ground level scope of the project. uses or screening. Parking at grade under a building is discouraged unless the parking area is completely enclosed within the building or wholly screened with walls and/or landscaped berms. e) Top deck lighting on multi -level parking The requirement is not applicable to the structures shall be architecturally project. A parking structure is not within the integrated with the building, and scope of the project. screened to control impacts to off -site uses. Exposed fluorescent light fixtures are not permitted. f) Parking structures and vehicle The requirement is not applicable to the entrances should be designed to project. A parking structure is not within the minimize views into the garage interior scope of the project. from surrounding streets. Methods to help minimize such views may include, but are not limited to, landscaping, -8. planters, and decorative grilles and screens. g) Security grilles for parking structures The requirement is not applicable to the shall be architecturally consistent with project. A parking structure is not within the and integrated with the overall design. scope of the project. Chain -link fencing is not permitted for garage security fencing. h) See FWRC 19.115.090(3)(d) for See the responses presented under Criteria b, supplemental guidelines. below. Pedestrian circulation and public spaces FWRC 19.115.060 (4) a) Primary entrances to buildings, except The standard is not applicable to the project. for zero lot line townhouse The project will add no new pedestrian development and attached dwelling pathways. units oriented around an internal courtyard, should be clearly visible or recognizable from the right-of-way. Pedestrian pathways from rights -of - way and bus stops to primary entrances, from parking lots to primary entrances, and pedestrian areas, shall be accessible and should be clearly delineated. b) Pedestrian pathways and pedestrian The standard is not applicable to the project. areas should be delineated by separate The project will add no new pedestrian paved routes using a variation in paved pathways. texture and color, and protected from abutting vehicle circulation areas with landscaping. Approved methods of delineation include: stone, brick or granite pavers; exposed aggregate; or stamped and colored concrete. Paint striping on asphalt as a method of delineation is not encouraged. c) Pedestrian connections should be The standard is not applicable to the project. provided between properties to The project will add no new pedestrian establish pedestrian links to adjacent pathways. buildings, parking, pedestrian areas and public rights -of -way. d) Bicycle racks should be provided for all The main warehouse will continue to provide commercial developments. bicycle racks for the commercial development. e) Outdoor furniture, fixtures, and Existing outdoor elements will be maintained. streetscape elements, such as lighting, freestanding signs, trellises, arbors, raised planters, benches and other forms of seating, trash receptacles, bus stops, phone booths, fencing, etc., should be incorporated into the site design. f) See FWRC 19.115.090 for See the responses presented under Criteria b supplemental guidelines. below. -9- Landscaping FWRC 19.115.060 (5) Refer to Chapter 19.125 FWRC for specific The project will comply with the applicable landscaping requirements and for definitions of standards in the FWRC 19.125.040, General landscaping types referenced throughout this Landscaping requirements for all zones and chapter. the FWRC 19.126.060 (9) Landscaping requirements for the Commercial Enterprise (CE) zone. The project provides twenty feet of Type III landscaping along the frontage of Highway 161 and thirteen feet of Type III landscaping along the frontage of South 352nd Street. Additionally, the Costco site consists of 40,635 square feet of landscaping and promotes a cohesive development. Commercial service and institutional facilities. FWRC 19.115.060 (6) a) Service yards shall comply with the The standards within FWRC 19.115.060 (6) (a) following: i-iv are not applicable to the project. The i. Service yards and loading areas shall project is not proposing new service yards or be designed and located for easy any modification of the existing service yard. access by service vehicles and tenants and shall not displace required landscaping, impede other site uses, or create a nuisance for adjacent property owners. ii. Trash and recycling receptacles shall include covers to prevent odor and wind-blown litter. iii. Service yard walls, enclosures, and similar accessory site elements shall be consistent with the primary building(s) relative to architecture, materials and colors. iv. Chain -link fencing shall not be used where visible from public streets, on - site major drive aisles, adjacent residential uses, or pedestrian areas. Barbed or razor wire shall not be used. b) Site utilities shall comply with the The fuel facility expansion will comply with the following: standards set forth in FWRC 19.115.060 (6) (b) i. Building utility equipment such as as follows: electrical panels and junction boxes i. All electrical panels and utility should be located in an interior utility equipment will be located within the room. fuel facility controller enclosure. ii. Site utilities including transformers, ii. Not applicable, there are no utilities or fire standpipes and engineered open swales within the front yard retention ponds (except biofiltration setbacks. swales) should not be the dominant element of the front landscape area. When these must be located in a front yard, they shall be either -10- undergrounded or screened by walls and/or Type I landscaping, and shall not obstruct views of tenant common spaces, public open spaces, monument signs, and/or driveways. Miscellaneous site elements. FWRC 19.115.060 (7) a) Lighting shall comply with the following: Please refer to the Photometric Plan by TE, Inc. The fuel facility expansion will comply with i. Lighting levels shall not spill onto the standards set forth in FWRC 19.115.060 adjacent properties pursuant to (7) (a) as follows: FWRC 19.105.030(3). ii. Lighting shall be provided in all i. The lighting levels at the adjacent loading, storage, and circulation property lines meet the standards areas, but shall incorporate cut-off pursuant to FWRC 19.105.030(3). shields to prevent off -site glare. ii. Existing site lighting will be maintained. iii. Lighting standards shall not reduce New under canopy lighting will provide the amount of landscaping required adequate lighting within all loading, for the project by Chapter 19.125 storage, and circulation areas that is FWRC, Outdoors, Yards, and directed to prevent off -site glare. Landscaping. iii. The project will not impact the existing lighting on the site. The required landscaping will not be impacted by any alteration of the surrounding lighting. b) Drive -through facilities, such as banks, The fuel facility expansion will comply with the cleaners, fast food, drug stores and standards set forth in FWRC 19.115.060 (7) (b) service stations, etc., shall comply with as follows: the following: i. The fuel facility will provide Type III i. Drive -through windows and stacking landscaping along the right-of-way to lanes are not encouraged along facades visually screen the stacking lanes. The of buildings that face a right-of-way. If fuel facility is elevated and contains a they are permitted in such a location, retaining wall that is adjacent to then they shall be visually screened Highway 161. This provides an from such street by Type III landscaping elemental buffer from the right-of-way and/or architectural element, or combination thereof; provided, such with the stacking lanes and the fuel elements reflect the primary building facility. and provide appropriate screening. ii. The fuel facility utilizes landscape ii. The stacking lane shall be physically islands to separate the facility with the separated from the parking lot, parking lot areas, sidewalks, and sidewalk, and pedestrian areas,by Type pedestrian areas. III landscaping and/or architectural iii. The standard is not applicable to the element, or combination thereof; project. The project does not provide provided, such elements reflect the drive -through speakers. primary building and provide appropriate separation. Painted lanes iv. The fuel facility provides pass -by lanes are not sufficient. along all the fueling positions to iii. Drive -through speakers shall not be provide adequate circulation through audible off -site. the facility. iv. A bypass/escape lane is recommended V. See the responses presented under for all drive -through facilities. Criteria b below. Miff v. See FWRC 19.115.090(4) for I supplemental guidelines. I b) It is consistent with applicable supplemental guidelines set forth in FWRC 19.115.090; and Response: The fuel facility will continue to comply with all applicable supplemental guidelines set forth in FWRC 19.115.090, as indicated in the table below: Requirement Response District Guidelines: Office park (OP), corporate park (CP), and commercial enterprise (CE) FWRC 19.115.090 a) Surface parking may be located behind The standard is not applicable because the the building, to the side(s) of the building, project will not alter the location of the parking. or adjacent to the right-of-way; provided, however, that parking located adjacent to the right-of-way maximizes pedestrian access and circulation pursuant to FWRC 19.115.050(4). b) Entrance facades shall front on, face, or The standard is not applicable with the be clearly recognizable from the right -of- project. However, the facility will adequately way. direct traffic through the facility with directional signs and pavement markings that are clearly recognizable. c) Building entrances shall be architecturally The standard is not applicable with the emphasized and shall incorporate project. The project is the addition of fuel transparent glass. dispensers and expansion of the overhead canopy. d) Ground floor entrances to retail sales or The standard is not applicable with the scope services shall incorporate plaza features of the project. The project is the addition of or furnishings, and/or streetscape fuel dispensers and expansion of the amenities, in a context -sensitive amount overhead canopy. and combination, considering the scale of the retail use(s) and entrance(s) to the overall building or development, and the proximity and accessibility from the building to other existing plaza or streetscape features. e) Ground -level mirrored or reflective glass is The standard is not applicable with the scope not allowed adjacent to a public right -of- of the project. The project does not provide way or pedestrian area. any ground -level glass. f) If utilized, chain -link fences visible from The project will not utilize chain -link fences for public rights -of -way or adjacent properties, the project beyond the construction period. and not screened by Type I landscaping as defined in Chapter 19.125 FWRC, shall utilize vinyl -coated mesh, powder -coated poles, dark color(s), and architectural element(s) such as pole caps and/or decorative grid pattern. -12- c) For development applications for remodeling or expansion of an existing development, it is consistent with those provisions of Chapter 19.115 FWRC, Community Design Guidelines, identified by the director as being applicable. Response: The fuel facility expansion will continue to be harmonious with the character of the Costco development and surrounding area with respect to landscaping, scale, lot coverage, and similar site design aspects. The fuel facility will continue to comply with all applicable development standards of the CE zone, as indicated in the table under Criteria Site Plan b, above. Conclusion The responses above and application materials demonstrate that the expansion of the fuel facility meets the approval criteria for Use Process II: Site Plan Review. The City's approval of this application is respectfully requested. -13- BARGNAUSEN November 22, 2019 HAND DELIVERY (253) 835-2700 Natalie Kamieniecki Associate Planner City of Federal Way Community Development Department 33325 8th Avenue South Federal Way, WA 98003 RE: Responses to Technical Review Comments Costco - Fuel Facility Expansion 35100 Enchanted Parkway, Federal Way, Washington 98003 Permit No. 19-101782-00-UP Costco Loc. No. 061 / Our Job No. 6076 Dear Natalie: RESUBMITTED NOV 2 2 2019 0 OF FEDERAL WAY 0✓UUNITY of I,oI�MdvT We have revised the plans and technical documents for the above -referenced project in accordance with your comment letter dated September 18, 2019. Enclosed are the following documents for your review and approval: 1. Four (4) copies of the Project Narrative prepared by Barghausen Consulting Engineers, Inc. dated March 29, 2019 2. Four (4) copies of the updated Site Plan prepared by Barghausen Consulting Engineers, Inc. dated November 19, 2019 3. Four (4) copies of the updated Civil Plan Set prepared by Barghausen Consulting Engineers, Inc. dated November 6, 2019 4. Four (4) copies of the updated Landscape Plan prepared by Barghausen Consulting Engineers, Inc. dated November 4, 2019 5. Four (4) copies of the Kittelson & Associates, Inc. Memo dated November 20, 2019 The following outline provides each of your comments in italics exactly as written, along with a narrative response describing how each comment was addressed: COMMUNITY DEVELOPMENT - PLANNING DIVISION Natalie Kamieniecki 253-835-2638 natalie.kamienieqLip_citvoffederalway.com • Please note that the controller building location will need to be adjusted in order to meet front yard setback of 20 feet from the right-of-way tract or right-of-way dedication. Response: We request the removal of a requirement to enter into a Tract X agreement for a future 12-foot right-of-way dedication, as detailed in our Responses to Right -of -Way Modification Comments dated November 20, 2019. BARGNAUSEN CONSULTING ENGINEERS, INC. 18215 72ND AVENUE SOUTH KENT,WA98032 P)425-251-6222 F)425-251-8782 BRANCH OFFICES: TUMWATER, WA KLAMATH FALLS, OR LONG BEACH, CA ROSEVILLE, CA SAN DIEGO, CA barghausen.com RESUBMITTED NOV 12 2019 Natalie Kamieniecki CITY FFDDERALwAy � Associate Planner EVELa City of Federal Way Community Development Department -2- November 22, 2019 PUBLIC WORKS - PUBLIC WORKS DEVELOPMENT SERVICES DIVISION Ann Dower, 253-835-2732, ann.dower(c�cityoffedera/way.com • As a condition of the building permit, a Tract X agreement must be signed for future right- of-way on 16th Avenue South. The Tract X will consist of a 12-foot wide tract for the length of the Costco property frontage, which will remain private until such time as the city deems it necessary for frontage improvements on 16th Avenue South. The Tract X should be called out on the site plan. Response: As noted in our Responses to Right -of -Way Modification Comments dated November 20, 2019, we request the removal of a conditional requirement to enter into a Tract X agreement to commit to dedicating a 12-foot width of right-of-way. As discussed in our Response to Conditions of Approval letter dated August 1, 2019, the current project does not include or require any improvements to the Enchanted Parkway right-of-way and a future 12-foot dedication would impact the property by creating a non -conforming situation for an existing use. Additionally, a 12-foot dedication would result in locating existing property infrastructure, including a retaining wall necessary to support the fuel facility within the City right-of-way. Entering into a Tract X agreement would unnecessarily burden the Costco property due to the uncertain future development status of the property and require the property owner to assume liability without being able to fully utilize the land. Based on the circumstances impacting the Enchanted Parkway frontage of the Costco property, a 4-foot dedication of the right-of-way as shown in the enclosed Site Plan dated November 19, 2019 is a more appropriate solution. A 4-foot dedication would bring the right-of-way line up to the foot of the rock retaining wall, leaving existing private infrastructure out of the right-of-way and preventing a future non -conforming situation for an existing use. Additionally, the dedication would eliminate the current encroachment of public sidewalk and public transportation facilities on Costco's property by moving the right- of-way line/property line four (4) feet to encompass the existing public improvements. • No right-of-way dedication will be required on South 352 d Street. The five-foot dedication should be removed from the site plan. Response: Acknowledged. The 5-foot dedication has been removed from the revised Site Plan. PUBLIC WORKS — PUBLIC WORKS TRAFFIC DIVISION Sarad L on-q, 253-635-2743 sarad . long2cityoffederalwa y.com The proposed development is expected to add about 54 weekday PM peak hour trips to the SR 161/South 352nd Street intersection and the site access. As such, the westerly driveway must be redesigned to minimize queuing on South 352nd Street and to facilitate on -site traffic circulation. Please provide queuing and LOS analysis at SR 161 and South 352 Street intersection and at the westerly driveway on South 352nd Street. Per the Synchro queuing analysis performed by staff, the existing PM peak hour westbound left turn 95th percentile queue length at SR 161/South 352nd Street intersection is approximately 261 feet. This westbound left turn queue exceeds the available 150-foot storage pocket. Field observation during the afternoon peak hour and PM peak hour verified that the westbound left turn queue will extend past the westerly driveway, thus ;gESUBMITTE® NOV 2 2 2M Natalie to Planner nie r COMMUNE FEDERAL WAY Associate Planner City of Federal Way Community Development Department -3- November 22, 2019 blocking the eastbound left turn traffic into the site. Furthermore, the southbound right -turn traffic out of the westerly driveway typically encroaches on to the eastbound left turn lane, thus creating conflict with vehicles turning into the site. To address these issues, staff has recommended redesigning the driveway to include increasing the driveway throat length to a minimum of 50 feet, and modifying the existing standard curb cut to radius. Also, a left turn lane from the internal drive aisle into the fueling site, and other options should be explored in order to reduce the eastbound left -turn queues on South 352nd Street in to the site. Response: Please refer to the Revised Site Plan dated November 19, 2019. As requested in the City's Right -of -Way Modification Comments dated September 13, 2019 and Technical Review Comments dated September 18, 2019, our traffic consultant, Kittelson & Associates, Inc. has analyzed the westbound queues and LOS for the intersection of Enchanted Parkway and South 352nd Street and the westerly driveway on South 352nd Street. Please refer to Kittelson & Associate, Inc.'s memo dated November 20, 2019 for their conclusions. Based on their analysis and review of the City's suggested revisions to address the City's concerns with the westerly driveway, we have modified the westerly driveway as recommended by the City, including Kittelson & Associate's additional recommendations: a curb radius and revised lanes to one exit and two entry lanes. The exit lane is a right out only, restricted by a pork chop with pedestrian cut -through. The two entry lanes consist of a center lane dedicated to left turns for the fuel facility and a bypass lane for access to Costco parking and the shopping center. As shown in Kittelson & Associate, Inc.'s memo, these improvements will allow for ease of access to the site and provide an overall reduction in queues, particularly southbound queues from the shopping center to South 352nd Street and westbound queues at the SR 161/South 352nd Street intersection. We believe that the above responses, together with the enclosed revised plans and technical documents, address all of the comments in your letter dated September 18, 2019. Please review and approve the enclosed at your earliest convenience. If you have questions or need additional information, please do not hesitate to contact me at this office. Thank you. Sincerely, ��q1,6_2 6rz,�_, . } Charles Moseley S{/ CM/lb [6076c.147.docx] Senior Project Manager enc: As Noted cc: Kim Katz, Costco Wholesale Corporation John Ellingsen, Ellingsen & Company Jay S. Grubb, Barghausen Consulting Engineers, Inc. Chris S. Ferko, Barghausen Consulting Engineers, Inc. Sean Anderson, Barghausen Consulting Engineers, Inc. Mettle Brasel, Barghausen Consulting Engineers, Inc. RESUEf,.. I TED BARGUAUSEN Desiree Winkler Deputy Public Works Director City of Federal Way Public Works Department 33325 8th Avenue South Federal Way, WA 98003 Office: (253) 835-2700 NOV 2 2 2019 CITY OF FEDERAL WAY C WMUW7Y DEVELOPMENTi November 19, 2019 HAND DELIVERY RE: Responses to Right -of -Way Modification Comments Costco - Fuel Facility Expansion 35100 Enchanted Parkway, Federal Way, Washington 98003 Permit No. 19-102337-00-SM Costco Loc. No. 061 / Our Job No. 6076 Dear Desiree: We have revised the plans and technical documents for the above -referenced project in accordance with your comment letter dated September 13, 2019. Enclosed are the following documents for your review and approval: 1. One (1) Site Plan prepared by Barghausen Consulting Engineers, Inc. dated November 19, 2019 The following outline provides each of your comments in italics exactly as written, along with a narrative response describing how each comment was addressed: The City of Federal Way Public Works Department has reviewed your request for amendments to the right-of-way modification issued June 19, 2019. The modification letter outlined several conditions that you requested be waived, as follows: 1. Dedicate 12 feet of right-of-way on Enchanted Parkway S frontage After review of the site plan submitted on August 6, 2019, staff concurs that the 12' dedication will not be required. However, a Tract X agreement between the applicant and the City shall be recorded as a condition of building permit approval. This agreement will commit the applicant to dedicating the 12' width of right-of-way at such time as the City deems it necessary for future frontage improvements. Response: We request the removal of a conditional requirement to enter into a Tract X agreement to commit to dedicating a 12-foot width of right-of-way. As discussed in our Response to Conditions of Approval letter dated August 1, 2019, the current project does not include or require any improvements to the Enchanted Parkway right-of-way and a future 12-foot dedication would impact BARGHAUSEN CONSULTING ENGINEERS, INC. 18215 72ND AVENUE SOUTH KENT, WA 98032 P) 425-251-6222 F) 425-251-8782 BRANCH OFFICES: TUMWATER, WA KLAMATH FALLS, OR LONG BEACH, CA ROSEVILLE, CA SAN DIEGO, CA barghausen.com Desiree Winkler Deputy Director Public Works City of Federal Way Public Works Department -2- November 22, 2019 the property by creating a non -conforming situation for an existing use. Additionally, a 12-foot dedication would result in locating existing property infrastructure, including a retaining wall necessary to support the fuel facility, within the City right-of-way. Entering into a Tract X agreement would unnecessarily burden the Costco property due to the uncertain future development status of the property, and require the property owner to assume liability without being able to fully utilize the land. Based on the circumstances impacting the Enchanted Parkway frontage of the Costco property, a 4-foot dedication of the right-of-way as shown in the enclosed Site Plan dated November 19, 2019 is a more appropriate solution. A 4-foot dedication would bring the right-of-way line up to the foot of the rock retaining wall, leaving existing private infrastructure out of the right-of-way and preventing a future non -conforming situation for an existing use. Additionally, existing pedestrian and public transportation infrastructure currently located within Costco's property, would be relocated back to within the City owned right-of-way. 2. Dedicate 5 feet of right-of-way on S 352nd Street After review of the site plan submitted on August 6, 2019, staff concurs that the 5' dedication will not be required. Response: Acknowledged. 3. Meet all current ADA standards within the public right-of-way This condition is typical for development proposals that are subject to the frontage improvement requirements outlined in Section 19.135.030 and is not waived. Specific locations will be assessed during building permit review. Response: Ramps at the intersection of Enchanted Parkway and South 352nd Street were updated earlier this year to current ADA standards. Modifications to the westernmost driveway at S 352nd Street will comply with current ADA standards. 4. Reconstruct the existing westernmost driveway on S 352 Street to reduce on -street queuing and provide safer entry from the westbound left -turn lane on S 352" St. Response: The western -most driveway along South 352nd Street will be modified to provide an on -site 148-foot left -turn lane for fuel facility bound traffic, and a 148-foot through lane for traffic accessing the overall site. This modification will include the relocation of existing parking lot planters, and a removal of two (2) parking stalls resulting in a total of 691 parking stalls for the Costco property, which continues to comply with the minimum parking requirement of 521 stalls. Desiree Winkler Deputy Director Public Works City of Federal Way Public Works Department -3- November 22, 2019L We believe that the above responses, together with the enclosed revised plans and technical documents, address all of the comments in your letter dated September 13, 2019. Please review and approve the enclosed at your earliest convenience. If you have questions or need additional information, please do not hesitate to contact me at this office. Thank you. Sincerely, ��q� Charles Moseley Senior Project Manager CM/lb 6076c.148.docx enc: As Noted cc: Kim Katz, Costco Wholesale Corporation John Ellingsen, Ellingsen & Company Jay S. Grubb, Barghausen Consulting Engineers, Inc. Chris S. Ferko, Barghausen Consulting Engineers, Inc. Sean Anderson, Barghausen Consulting Engineers, Inc. Mettle Brasel, Barghausen Consulting Engineers, Inc. i KITTELSC,iV � &ASSOCIATES MEMORANDUM 11480 COMMERCE PARK DRIVE, SUITE 450 RESTON, VA 20191 P 703.885.8970 RESUBMITTED NOV 2 2 2019 WAY Date: November 20, 2019 CC)MMUNITy Project #: 23465 To: Kim Katz — Costco Real Estate John Ellingsen — Ellingsen & Company, Inc. From: Chris Tiesler and Kristine Connolly — Kittelson & Associates, Inc. Project: Federal Way Costco Gasoline Fuel Station Expansion Subject: Supplemental Traffic Analysis In response to the City's Right -of -Way Modification Comments dated September 13, 2019 and Technical Review Comments dated September 18, 2019, Kittelson & Associates, Inc. (Kittelson) has prepared a supplemental transportation analysis for the expansion of the existing Costco Gasoline fuel station located on the northeast corner of Enchanted Parkway South (SR 161) and South 352nd Street in Federal Way, Washington. Of particular focus was the anticipated level -of -service (LOS) and queueing expected at the SR 161/South 352nd Street intersection and the existing Costco Gasoline fuel station access. This memorandum summarizes anticipated LOS and queueing under existing conditions and with the proposed expansion. SCOPE OF STUDY The following three intersections were evaluated: 1. SR 161/South 352nd Street 2. South 352nd Street/Shopping Center Internal Road 3. Costco Gasoline Access/Shopping Center Internal Road ANALYSIS SCENARIOS A supplemental analysis of LOS and queuing was performed for the following scenarios: • Year 2019 PM Peak Hour Existing Traffic Volumes and Lane Configurations • Year 2019 PM Peak Hour Proposed Traffic Volumes and Lane Configurations o Southbound movements at Intersection #2 limited to right-in/left-in/right-out o Southbound left/through lane at Intersection #2 converted to a second receiving lane o Exclusive northbound left -turn lane provided at Intersection #3 Federal Way Costco Gasoline Fuel Station Expansion November 20, 2019 Project #. 23465 Page 2 TRAFFIC VOLUMES Traffic volumes were developed according to the following procedure: Existing Traffic Volumes • Intersection turning movement counts were conducted at the three study intersections in November 2018. • System peak hour traffic volumes were balanced from the SR 161/South 352nd Street intersection (#1) through the two driveways (#2 and #3). Proposed Traffic Volumes • The 54 trips (27 in/27 out) associated with site development were distributed through the study intersections according to existing traffic patterns. These trips were determined in coordination with City staff as the sum of external and diverted trips in Kittelson's Federal Way Costco Gasoline Fuel Station Expansion Trip Generation and Queueing Summary dated January 15, 2019, and included as Appendix "A". • Southbound left and through volumes at Intersection #2 were eliminated from the network to account for the proposed turning movement restrictions. TRAFFIC ANALYSIS Operational analyses for the signalized and stop -controlled intersections presented in this memorandum were completed using Synchro 10 software, based on the procedures stated in the Highway Capacity Manual 61 Edition. A SimTraffic queuing analysis was also completed for each scenario. All analyses were performed using the Synchro model provided by City staff. Signal timings in the Synchro model were not altered. The LOS and queueing reports are included as Appendix "Bi1. Table 1 below summarizes the LOS results for each scenario. Figures 1 and 2 show the•static SimTraffic queues under existing conditions and proposed conditions, respectively. Table 1. LOS Results Summary Year 2019 PM Peak Hour Existing Conditions Year 2019 PM Peak Hour Proposed Conditions D / 42.6 D / 49.1 1 SR 161/South 352"d Street 2 South 352"d Street/Shopping Center A/ 7.8 A/ 8 2 Internal Road 3 Costco Gasoline Access/Shopping A/ 7.5 A/ 8.0 Center Internal Road 1 In the model output, Node 5050 in the model corresponds to SR 161/South 352"d Street (Intersection #1). Node 1 corresponds to South 352"d Street/Shopping Center Internal Road (Intersection #2) and Node 4 corresponds to Costco Gasoline Access/Shopping Center Internal Road (Intersection #3). Kittelson & Associates, Inc. Reston, Virginia Federal Way Costco Gasoline Fuel Station Expansion November20, 2019 Project#. 23465 Page 3 Figure 1. SirnTraffic Queues under Existing Conditions Figure 2. SirnTraffic Queues with Proposed Expansion & Mitigation Kittelson & Associates, Inc. Reston, Virginia Federal Way Costco Gasoline Fuel Station Expansion Project #. 23465 November 20, 2019 Page 4 Although there is a nominal increase in delay associated with site trips generated by the expansion, LOS results for each study intersection remain unchanged. Figures 1 and 2 demonstrate an overall reduction in queues under proposed traffic volumes and lane configurations compared to existing conditions. Notably the proposed lane configuration modifications reduce southbound queues exiting the site onto South 352nd Street and westbound queues at the SR 161/South 352nd Street intersection. This reduction is associated with improved circulation internally and on South 352nd Street. CONCLUSIONS The results of the traffic analysis summarized in this memorandum indicate that the impact of site traffic is mitigated by the proposed lane configuration modifications and turning movement restrictions: • Southbound movements at Intersection #2 limited to right-in/left-in/right-out • Southbound left/through lane at Intersection #2 converted to a second receiving lane Exclusive northbound left -turn lane provided at Intersection #3 The improved circulation related to these modifications provides reduced queues within the study area, particularly southbound queues exiting the site onto South 352nd Street and westbound queues at the SR 161/South 352nd Street intersection. Should additional information be necessary to understand the anticipated effects of the fuel station expansion, please contact Kristine Connolly at 503-535-7448, kconnolly@kittelson.com, or Chris Tiesler at 571-384-2943, ctiesler@kittelson.com. Kittelson & Associates, Inc. Reston, Virginia Appendix A Federal Way Costco Gasoline Fuel Station Expansion Trip Generation and Queueing Summary I�G KITTELSLN &ASSOCIATES MEMORANDUM 11480 COMMERCE PARK DRIVE, SUITE 450 RESTON, VA 20191 703,885.8970 Date: January 15, 2019 Project #: 23465 To Kim Katz — Costco Real Estate John Ellingsen — Ellingsen & Company, Inc. From Chris Tiesler and Kristine Connolly— Kittelson & Associates, Inc. Project Federal Way Costco Gasoline Fuel Station Expansion Subject Trip Generation and Queueing Summary Kittelson & Associates, Inc. (Kittelson) has prepared transportation information for the expansion of the existing Costco Gasoline fuel station located on the northeast corner of Enchanted Parkway South and South 352"d Street in Federal Way, Washington. Of particular focus was the anticipated trip generation expected for the fuel station expansion and the anticipated vehicle circulation and queuing. The overall site plan for the Federal Way Costco Gasoline expansion is provided in Figure 1. Figure 2 provides a detailed view of the fuel station area. This trip generation estimate will help inform the City's concurrency model and determine the need for and/or extent of a traffic impact analysis per City code to obtain a concurrency permit for the project. PROJECT DESCRIPTION The existing Federal Way Costco Gasoline fuel station consists of four islands (eight dispensers) with a total of sixteen (16) vehicle fueling positions. The expansion will widen the fuel station to include a third row of dispensers on the entrance side, providing a new total of twenty-four (24) vehicle fueling positions. The intent of the Costco Gasoline station expansion is to improve the member fuel purchasing experiences at this location by mitigating long queues and wait times during peak periods. a N MIT i A i HinOS /WMAI jvd OAiNVHON3 ZLn Ow JQ U LU O �N �oa .Id allS :9e1 jm(ej aimupna9 -'FU968 - 6102'61 —f IMP'1 a-ldi'9KZOHLWAa4-M—&3 S 9 w1SOJ f-M1-aPad - S96MM-H a— N -----------------o- ----------------�---------------------- -- --_ A .. ---- ------`----- -------------- --------_--__--- I� Hinds xdAAN�idd C]iNVHON3---- - - W' m 0 U m a —Ida71SPa&eN3 AMLLF'udel--Ignaq- u-968- 61OZ'6I-f VMP•Zsea ailSO O O C � •C �t x N Lu c� 1 N 4 •U m M L- LL. N N LL 1 AM 1--P-A - 99PCZEW-H zu) Ow �Q JV w O Seca Federal Way Costco Gasoline Fuel Station Expansion Project#. 23465 January 15, 2019 Page 4 COSTCO TRIP GENERATION DATABASE For the past 17 years, Kittelson has maintained a database of traffic data and travel characteristics for Costco Wholesale, including fuel stations. The database contains transportation information such as trip rates, trip type percentages, and parking demand for Costco locations throughout the United States as well as Canada and Mexico. The database is updated periodically each time new Costco traffic counts or information become available to Kittelson. To best evaluate the anticipated transportation characteristics of the Federal Way fuel station expansion, database data and data collected on site was used. The Costco transportation database contains a large quantity of data related to Costco Gasoline fuel stations. Trip generation rates and trip type information for over 35 Costco Gasoline facilities located throughout the U.S. are included. Costco has invested significant effort into developing this use -specific trip generation database for both their warehouses and their fuel stations because of the unique characteristics of Costco member travel that exist due to membership requirements and the nature of Costco sales. These unique elements apply to the trip generation for Costco warehouses, Costco Gasoline fuel stations, and the interaction of trips between the two. The Costco-specific trip generation data presented herein follows nationally -accepted practices for trip generation data collection as recommended by the Institute of Transportation Engineers (ITE) and presents a robust data set upon which to confidently and accurately predict the trip generation of the expansion of the fuel station. FEDERAL WAY FUEL STATION EXPANSION TRIP GENERATION ESTIMATE In developing a trip generation estimate for fuel station expansion, it is important to recognize that the fuel station exists today, and the project is an expansion to this existing use, not the addition of a new use. Furthermore, the market area of the Federal Way Costco is already defined through existing membership and operations. As such, it's unlikely that the trip generation of the fuel station will increase directly in proportion to the increased number of fueling positions. It is more likely that the additional fueling positions will serve to more efficiently and effectively process the current peak demand at the fuel station, thus reducing wait times, vehicle queuing, and vehicle idling. Kittelson reviewed before and after data from other comparable Costco Gasoline fuel station expansion sites to determine a more representative relationship between new trip generation and the addition of fueling positions to the existing station. Kittelson & Associates, Inc. Reston, Virginia Federal Way Costco Gasoline Fuel Station Expansion January 15, 2019 Project #: 23465 Page 5 Before and After Fuel Expansion Data Summary Kittelson conducted trip generation counts at seven other Costco Gasoline fuel station locations that have expanded in size. These locations include sites where fuel stations have expanded from 16 fueling positions to 22 or 24 fueling positions. The comparable expansion sites identified were: • Rancho Del Rey, California • Cypress, California ■ NE San Jose, California IF Portland, Oregon Concord, California • Tustin II, California Rohnert Park, California To work with a representative sample size, trip generation data was collected on an hourly basis for a period before and after the expansion at each of these locations. Only data collected during similar months of the year before and after the expansion were included in this summary (for example, trip generation data for the months of March and April before the expansion were compared to trip generation data for the months of March and April after the expansion). The total number of weekday PM peak hour and Saturday midday peak hour trip ends counted forthe seven listed sites' are provided in Table 1 and Table 2, respectively. Note the total number of trip ends does not reflect any reductions due to internal capture, pass -by, or diverted trips. Table 1: Weekday PM Peak Hour Trip Growth Average Weekday PM Peak Hour Trips Generated Location Before Expansion After Expansion % Difference Rancho Del Rey, CA 414 676 63.3% NE San Jose, CA 474 458 -3.4%' Concord, CA 470 550 17.0% Rohnert Park, CA 426 498 16.9% Cypress, CA 472 654 38.6% Portland, OR No PM peak data available for this location Tustin II, CA No PM peak data available for this location Average 1 26.5% ' Slight reduction underscores fact that adding capacity to a member -only gas station does not necessarily increase demand. The 3.4 percent reduction is well within expected 5-10% daily fluctuations in hourly traffic volumes. z Expansion from 16 fueling positions to 22 fueling positions. All other examples are expansions from 16 to 24 fueling positions ' Not all sites have data for both time periods. All available data are provided. Kittelson & Associates, Inc. Reston, Virginia Federal Way Costco Gasoline Fuel Station Expansion January 15, 2019 Project #. 23465 Page 6 Table 2: Saturdav Middav Peak Hour Trip Growth Saturday Midday Peak Hour Trips Generated Location Before Expansion After Expansion % Difference Rancho Del Rey, CA No Saturday Midday data available for this location NE San Jose, CA 494 686 38.9% Concord, CA 520 700 34.6% Rohnert Park, CA 518 606 17.0% Cypress, CA 514 740 44.0% Portland, OR 462 616 33% Tustin II, CA' 580 1 610 5.2% Average I 28.8% 1 Expansion from 16 fueling positions to 22 fueling positions All other examples are expansions from 16 to 24 fueling positions As shown in Table 1 and Table 2, each of the sites with available data recorded some increase in the number of daily fuel transactions. However, the increase found in most situations is significantly less than what would be calculated from a direct linear relationship to the number of vehicle fueling positions. Using a linear relationship, expanding the fuel station from 16 to 22 fueling positions would equate to an increase in activity or trip generation of 38% and expanding from 16 to 24 positions would equate to an increase of 50%. However, the actual before and after data only shows an average increase of 26.5% and 28.8% in daily fuel transactions during the weekday PM peak hour and Saturday midday peak hour, respectively. This data demonstrates that increasing the number of fueling positions at the Federal Way Costco Gasoline fuel station will not result in a direct linear increase in trip generation. The before and after data captures the change in demand that results from reducing peak hour queues and wait times at the fuel stations due to latent demand and more efficient peak operations. In all cases, peak queues and wait times are significantly reduced. Those members who previously chose not to purchase fuel because of the wait times will likely do so once the operations are improved. Trip Type The data collected at existing Costco Gasoline fuel stations indicate the trip generation characteristics described below for internal trip capture between the fuel station and the warehouse, as well as pass - by trips and diverted capture from the surrounding street system. The unique nature of Costco operations and its membership requirements result in different trip characteristics than those observed at typical fuel stations summarized in the standard reference Trip Generation, published by the Institute of Transportation Engineers (ITE). The percentages of pass -by or diverted trips at Costco fuel stations is considerably lower than those quoted in the ITE Trip Generation manual for typical fuel stations. Correspondingly, membership requirements also have a significant effect on trip internalization (or sharing of trips) between the warehouse and the fuel station. Fewer people exclusively visit a Costco fuel station (in comparison to a typical standalone fuel station) because they have another primary purpose for visiting the site (that being a trip to the warehouse). Kittelson & Associates, Inc. Reston, Virginia Federal Way Costco Gasoline Fuel Station Expansion January 15, 2019 Project #: 23465 Page 7 Internal Trips A key finding from the studies conducted at Costco warehouses with fuel stations is the fact that approximately 34% of the PM peak hour trips to and from Costco fuel stations and 35% of the Saturday midday trips are internal capture trips. Internal capture trips account for those members who patronize both the warehouse and the fuel station during a single visit to the Costco site. As such, although they account for a trip to both the warehouse and the fuel station, they only account for one overall vehicle trip to the site and on the surrounding transportation system. Based on studies including surveys at Costco fuel stations and membership card transaction data, on average 34% and 35% of the members buying gas during the weekday PM and Saturday midday peak hours, respectively, are members whose main purpose to the site is to visit the Costco warehouse. At some sites this number ranges as high as 75%. However, to remain conservative, the average rates are applied to this analysis. Pass -by Trips Another key trip characteristic that must be considered is that of pass -by trip capture. Pass -by trips represent members (and trips) that are currently traveling on the surrounding street network for some other primary purpose (such as a trip from work to home) and stop into the site en route during their normal travel. As such, pass -by trips do not result in a net increase in traffic on the surrounding transportation system and their only effect occurs at the immediate intersections and site access driveways where they become turning movements. Based on studies of customer surveys at Costco Gasoline fuel stations, on average 37% and 33% of the members buying gas during the weekday PM and Saturday midday peak hours, respectively can be classified as pass -by trip capture from the surrounding street system. This is lower than the average pass -by rate quoted in the ITE Trip Generation manual for typical service stations (45%) and is attributable to the unique travel characteristics that result from Costco's membership requirements. Diverted Trips Diverted trips are similar to pass -by trips in that they represent members (and trips) that are currently traveling on the surrounding street network for some other primary purpose and stop into the site en route during their travel. However, as the name indicates, diverted trips divert from the normal roadways they would be traveling on to go to the Costco site. Based on studies of customer surveys at Costco Gasoline fuel stations, on average 37% and 36% of the members buying gas during the weekday PM and Saturday midday peak hours, respectively, can be classified as diverted trip capture from the surrounding street system. Trip Generation Estimate The peak hour for trip generation was defined as the analyzed hour during which the most vehicles entered the Federal Way Costco Gasoline fuel station. Arrival data were collected between 6:00 AM and 8:00 PM and on a typical weekday and between 6:00 AM and 8:00 PM on a typical Saturday. The Kittelson & Associates, Inc. Reston, Virginia Federal Way Costco Gasoline Fuel Station Expansion Project #: 23465 January 15, 2019 Page 8 weekday PM peak hour is between 4:50 — 5:50 PM and the Saturday midday peak hour is between 12:05 — 1:05 PM. Under existing conditions, the Federal Way Costco Gasoline fuel station generates approximately 490 total trip ends (or 245 vehicles) during the weekday PM peak hour, and 531 total trip ends (or 266 vehicles) during the Saturday midday peak hour. This information is included as Attachment A. Applying the data from Table 1 and Table 2, the observed increase in activity from other Costco Gasoline fuel station expansion sites to the existing trip generation provides an estimate of the expected number of additional total trips that will result from the Federal Way fuel station expansion. The trip generation estimates of the fuel station for the weekday PM peak hour and the Saturday midday peak hour are summarized in Table 3. Table 3: Federal Wav Costco Gasoline Fuel Station Expansion Trio Generation Estimate Trip Type Weekday PM Peak Hour Trip Ends Saturday Midday Peak Hour Trip Ends Existing' Expected Increase Existing' Expected Increase Total Trip Ends 490 130 531 153 Internal Trips (167) (44) (186) (54) (34% P.M., 35% Sat.) Total External Trip Ends 323 86 345 99 Pass -By Trips (120) (32) (114) (33) (37% P.M., 33% Sat.) Diverted Trips (120) (32) (124) (35) (37% P.M., 36% Sat.) Net New External Trip Ends 83 22 107 30 Source: Kittelson & Associates, 2018 1 Breakdown of volume and trip type generated by the existing fuel station provided for reference/informational purposes only. As can be seen from Table 3, the additional fueling positions are estimated to generate approximately 83 additional weekday PM peak hour total external trip ends (or 42 total additional vehicles) and 107 additional Saturday midday peak hour total external trip ends (or 54 total additional vehicles). However, only a small number of these external trip ends (22 to 30) would be new trips in the surrounding transportation system during the weekday PM and Saturday midday peak hours, respectively. Kittelson & Associates, Inc. Reston, Virginia Federal Way Costco Gasoline Fuel Station Expansion January 15, 2019 Project #. 23465 Page 9 FUEL STATION OPERATIONS & QUEUING As outlined above, the primary purpose of the fuel station expansion is to improve the current operations and queuing that the existing fuel station experiences. While there is a minimal increase in trips expected with the fuel station expansion, other Costco expansion locations show that this is greatly outweighed by the benefits of providing more pumps to expedite the processing of vehicles during peak times. All expansion locations were found to have more efficient processing of vehicles, shorter wait times, shorter queues, and less idling after the expansion. For example, average peak period queues have been observed at some Costco Gasoline fuel stations to decrease by 45-50% after expansion. By increasing the amount of fueling positions available to process the fuel station demand by eight, a similar reduction in peak period queues and wait times is anticipated at the Federal Way location. Existing queuing data were collected in November 2018 at the Federal Way Costco Gasoline fuel station between 6:00 AM and 8:00 PM on a typical weekday and a typical Saturday. This information is included as Attachment A. For the queuing analysis, the peak hour was defined as the hour during which the average queue was the longest. The weekday PM peak hour is between 4:57 — 5:57 PM and the Saturday midday peak hour is between 1:00 — 2:00 PM. Table 4 summarizes the existing observed queuing conditions at the 16-position Federal Way Costco Gasoline fuel station. As shown in Table 4, more vehicles were observed in the queue during the Saturday midday peak period when the site is more active. Table 4: Existinl; Peak Hour Federal Way Costco Queuing' Minimum Queue Maximum Queue Average Queue 951h Percentile Queue Weekday PM Peak Period 2 14 9 14 Saturday Midday Peak Period 12 26 20 25 * Queued vehicles waiting in line behind the pumps — do not include vehicles at fueling positions. To better demonstrate the effect fuel station expansion has on peak hour queuing, observed before/after weekday PM and Saturday midday peak hour maximum queues are compared in Table 5 and Table 6, respectively. Kittelson & Associates, Inc. Reston, Virginia Federal Way Costco Gasoline Fuel Station Expansion January 15, 2019 Project #. 23465 Page 10 Table 5: Weekdav PM Peak Hour Maximum Queue - Before & After Data Summary Location Fueling Positions Maximum Weekday PM Peak Hour Queue (vehicles) Before' After Before Expansion After Expansion _ % Difference Rohnert Park, CA 16 24 28 8 -71.4% Concord, CA 16 24 38 10 -73.7% NE San Jose, CA 16 24 47 6 -87.2% Portland, OR 16 24 35 12 -65.7% Wilsonville, OR 16 24 28 16 -42.9% Cypress, CA 16 24 35 17 -51.4% AVERAGE -65.4% Source: Kittelson & Associates, Inc. 2018 Table 6: Saturdav Middav Peak Hour Maximum Queue - Before & After Data Summary Location Fueling Positions Before After Maximum Saturday Midday Peak Hour Queue (vehicles) Before Expansion After Expansion % Difference Rohnert Park, CA 16 24 39 22 -43.6% Concord, CA 16 24 41 32 -22.0% NE San Jose, CA 16 24 47 31 -34.0% Portland, OR 16 24 35 20 -42.9% Wilsonville, OR 16 24 35 33 -5.7% CVDress. CA 16 24 52 19 -63.5% AVERAGE 1 -35.2% Source: Kittelson & Associates, Inc. 2018 As shown in Table 5 and Table 6, Costco fuel station expansions at similar sites demonstrate a substantial reduction in recorded maximum peak hour queues (max one -minute queue recorded during peak one hour period) during both the weekday PM and Saturday midday peak hours. On average, these sites see a net average reduction of 65.4% and 35.2%, respectively following expansion, despite the noted increase in overall trips recorded in the same one -hour period. Applying these average reductions to the observed peak hour maximum queues at the Federal Way Costco fuel station would reduce the maximum observed one -minute queue from 14 vehicles to five vehicles during the weekday PM peak hour, and from 26 vehicles to 17 vehicles during the Saturday midday peak hour. Figure 3 presents a comparison of existing and projected maximum queues during the weekday PM peak hour. Figure 4 presents a similar comparison during the Saturday midday peak hour. Similar to opening more cashiers/check-out lanes at a supermarket, the additional "servers" available do not determine how many people wait in line but serve to process those waiting in line more efficiently and quickly. Reduced queues and wait times have been consistently observed at expanded Costco fuel stations constructed with a higher number of fueling positions. The average time it takes for a vehicle to fuel does not significantly change by the addition of more fueling positions but because there are more fueling positions available to process vehicles, all expansion locations were found to have overall more efficient processing of vehicles, shorter wait times, shorter queues, and less idling after the expansion. Kittelson & Associates, Inc. Reston, Virginia I N cn z 7 Wd 6eP,laaM 9e1 mn6ej wrnumn,q-um9KR-6102'hluej set) nalsn cu � M U- L O - L = to EN � C6 U v co �h E�� al X f6 z O CO 0 a O 2 J W lL U 1=i = LLJ Q � J �W U D HE LLI W W > O U O h t- 0 z I XeM I-nPad -S96EZ�Ez,�l Z Cp� LU O �a �dco !I — A l�J it Cr r.- :. [Lai lei IN ON Is IS um 1 l� . ! ! �- t� � ■ 1� IiiE i Iead,CepmleS :qey .mumn,q-wrgKR-6102'b!u r 9mfrh-E��!3-596£Z�s9fµxidaqurnsucdxg se9misn N CD LL c L C: O O 5 L = W E U �> � L x m mLn PE z O CO O IL C7 Z Z� W LL J U x 0 Q > vi U 7 wO w > M J O U � UJ U) U O F-- C-6 0 z Li I �eM l��P�9 - S9hEZ�EZ��f I Federal Way Costco Gasoline Fuel Station Expansion January 15, 2019 Project #: 23465 Page 13 These data indicate adding dispensers to the existing fuel station will substantially reduce wait times, queues, and idling once the fuel station is expanded. CONCLUSION The Federal Way Costco Gasoline fuel station expansion is anticipated to reduce queues by expediting the processing of vehicles. As with similar Costco Gasoline fuel station expansion locations, the expansion will ensure more efficient processing of vehicles, shorter wait times, shorter queues, and less idling time. The Costco-specific trip generation data presented herein follow nationally -accepted practices for trip generation data collection as recommended by ITE and present a robust dataset upon which to confidently and accurately predict the trip generation of the fuel station expansion. Should additional information be necessary to understand the anticipated effects of the fuel station expansion, please contact Chris Tiesler at 571-384-2943 or ctiesler@kittelson.com. Kittelson & Associates, Inc. Reston, Virginia Attachment A Federal Way Costco Fuel Station Trip Generation & Queuing Data (1 Quality Counts TRANSPORTATION DATA COLLECTION SERVICES Site Code: 14820416, 18 Location: Federal Way Costco Date: 11/1/2018 ins Outs Total Hourly Ins Hourly Outs Hourly Total 6:00 AM 3 2 5 73 77 82 91 93 104 110 109 110 112 119 122 123 131 135 132 138 134 133 129 133 138 140 147 152 151 153 157 159 71 73 75 83 90 97 107 112 110 109 110 120 120 122 134 134 133 135 132 130 131 136 139 137 147 150 148 152 154 144 150 157 174 183 201 217 221 220 221 229 242 243 253 269 266 271 269 265 259 264 274 279 284 299 301 301 309 313 6:05 AM 5 3 8 6:10 AM 6 5 11 6:15 AM 5 5 10 6:20 AM 4 4 8 6:25 AM 4 3 7 6:30 AM 13 7 20 6:35 AM 9 11 20 6:40 AM 8 11 19 6:45 AM 6 7 13 6:50 AM 5 6 11 6:55 AM 5 7 12 7:00 AM 7 4 11 7:05 AM 10 5 15 7:10 AM 15 13 28 7:15 AM 7 12 19 7:20 AM 15 11 26 7:25 AM 10 13 23 7:30 AM 12 12 24 7:35 AM 10 9 19 7:40 AM 10 10 20 7:45 AM 13 8 21 7:50 AM 8 16 24 7:55 AM 6 7 13 8:00 AM 15 6 21 8:05 AM 14 17 31 8:10 AM 12 13 25 8:15 AM 13 11 24 8:20 AM 11 13 24 8:25 AM 9 10 19 8:30 AM 8 10 18 8:35 AM 14 10 24 8:40 AM 15 15 30 8:45 AM 15 11 26 8:50 AM 15 14 29 8:55 AM 11 17 28 9:00 AM 14 9 23 9:05 AM 16 15 31 9:10 AM 16 17 33 9:15 AM 15 13 28 Quality Counts TRANSPORTATION DATA COLLECTION SERVICES Site Code: 14820416, 18 Location: Federal Way Costco Date: 11/1/2018 Ins Outs Total Hourly Ins Hourly Outs Hourly Total 9:20 AM 18 18 36 166 169 175 176 179 184 179 191 195 197 206 209 211 212 220 230 228 222 241 239 237 242 239 240 242 248 246 247 248 247 238 232 240 232 229 229 228 232 236 223 159 165 172 171 171 182 185 180 190 191 197 202 207 208 209 218 222 216 219 225 227 231 229 228 226 232 235 242 243 247 244 250 245 243 240 243 244 241 239 231 325 334 347 347 350 366 364 371 385 388 403 411 418 420 429 448 450 438 460 464 464 473 468 468 468 480 481 489 491 494 482 482 485 475 469 472 472 473 475 454 9:25 AM 12 16 28 9:30 AM 14 17 31 9:35 AM 15 9 24 9:40 AM 18 15 33 9:45 AM 20 22 42 9:50 AM 10 17 27 9:55 AM 23 12 35 10:00 AM 18 19 37 10:05 AM 18 16 34 10:10 AM 25 23 48 10:15 AM 18 18 36 10:20 AM 20 23 43 10:25 AM 13 17 30 10:30 AM 22 18 40 10:35 AM 25 18 43 10:40 AM 16 19 35 10:45 AM 14 16 30 10:50 AM 29 20 49 10:55 AM 21 18 39 11:00 AM 16 21 37 11:05 AM 23 20 43 11:10 AM 22 21 43 11:15 AM 19 17 36 11:20 AM 22 21 43 11:25 AM 19 23 42 11:30 AM 20 21 41 11:35 AM 26 25 51 11:40 AM 17 20 37 11:45 AM 13 20 33 11:50 AM 20 17 37 11:55 AM 15 24 39 12:00 PM 24 16 40 12:05 PM 15 18 33 12:10 PM 19 18 37 12:15 PM 19 20 39 12:20 PM 21 22 43 12:25 PM 23 20 43 12:30 PM 24 19 43 12:35 PMJ 13 17 1 30 Quality Counts TRANSPORTATION DATA COLLECTION SERVICES Site Code: 14820416, 18 Location: Federal Way Costco Date: 11/1/2018 Ins Outs Total Hourly Ins Hourly Outs Hourly Total 12:40 PM 19 20 39 225 231 456 240 235 475 244 237 481 249 236 485 242 239 481 245 239 484 262 245 507 264 247 511 262 246 508 262 245 507 249 246 495 251 253 504 252 253 505 244 249 493 242 248 490 252 246 498 247 247 494 245 251 496 224 247 471 219 240 459 218 234 452 207 232 439 217 228 445 227 221 448 225 225 450 224 222 446 226 227 453 214 223 437 222 224 446 226 219 445 228 220 448 234 225 459 240 227 467 251 232 483 250 239 489 241 243 484 243 241 484 254 243 497 246 242 488 252 244 496 12:45 PM 28 24 52 12:50 PM 24 19 43 12:55 PM 20 23 43 1:00 PM 17 19 36 1:05 PM 18 18 36 1:10 PM 36 24 60 1:15 PM 21 22 43 1:20 PM 19 21 40 1:25 PM 23 19 42 1:30 PM 11 20 31 1:35 PM 15 24 39 1:40 PM 20 20 40 1:45 PM 20 20 40 1:50 PM 22 18 40 1:55 PM 30 21 51 2:00 PM 12 20 32 2:05 PM 16 22 38 2:10 PM 15 20 35 2:15 PM 16 15 31 2:20 PM 18 15 33 2:25 PM 12 17 29 2:30 PM 21 16 37 2:35 PM 25 17 42 2:40 PM 18 24 42 2:45 PM 19 17 36 2:50 PM 24 23 47 2:55 PM 18 17 35 3:00 PM 20 21 41 3:05 PM 20 17 37 3:10 PM 17 21 38 3:15 PM 22 20 42 3:20 PM 24 17 41 3:25 PM 23 22 45 3:30 PM 20 23 43 3:35 PM 16 21 37 3:40 PM 20 22 42 3:45 PM 30 19 49 3:50 PM 16 22 38 3:55 PMJ 24 1 19 1 43 Quality Counts TRANSPORTATION DATA COLLECTION SERVICES Site Code: 14820416, 18 Location: Federal Way Costco Date: 11/1/2018 Ins Outs Total Hourly Ins Hourly Outs Hourly Total 4:00 PM 14 22 36 246 245 239 236 230 228 227 227 220 207 215 217 220 220 229 232 233 235 237 237 243 251 246 242 242 243 244 236 238 243 235 241 237 227 228 222 226 228 230 237 245 244 243 240 237 234 230 229 224 219 216 217 214 216 218 221 224 227 231 232 233 239 247 245 243 244 249 248 245 243 245 238 241 243 233 235 233 232 225 226 491 489 482 476 467 462 457 456 444 426 431 434 434 436 447 453 457 462 468 469 476 490 493 487 485 487 493 484 483 486 480 479 478 470 461 457 459 460 455 463 4:05 PM 19 16 35 4:10 PM 11 20 31 4:15 PM 19 17 36 4:20 PM 18 14 32 4:25 PM 21 19 40 4:30 PM 19 19 38 4:35 PM 16 20 36 4:40 PM 13 17 30 4:45 PM 17 14 31 4:50 PM 24 19 43 4:55 PM 26 20 46 5:00 PM 17 19 36 5:05 PM 19 18 37 5:10 PM 20 22 42 5:15 PM 22 20 42 5:20 PM 19 17 36 5:25 PM 23 22 45 5:30 PM 21 23 44 5:35 PM 16 21 37 5:40 PM 19 18 37 5:45 PM 25 20 45 5:50 PM 19 27 46 5:55 PM 22 18 40 6:00 PM 17 17 34 6:05 PM 20 19 39 6:10 PM 21 27 48 6:15 PM 14 19 33 6:20 PM 21 14 35 6:25 PM 28 20 48 6:30 PM 13 25 38 6:35 PM 22 14 36 6:40 PM 15 21 36 6:45 PM 15 22 37 6:50 PM 20 17 37 6:55 PM 16 20 36 7:00 PM 21 15 36 7:05 PM 22 18 40 7:10 PM 23 20 43 7:15 PM 21 20 41 Quality Counts TRANSPORTATION DATA COLLECTION SERVICES Site Code: 14820416, 18 Location: Federal Way Costco Date: 11/1/2018 Ins Outs Total Hourly Ins I Hourly Outs Hourly Total 7:20 PM 12 22 34 228 214 220 215 213 219 212 207 234 231 224 230 220 217 216 209 462 445 444 445 433 436 428 416 7:25 PM 14 17 31 7:30 PM 19 18 37 7:35 PM 17 20 37 7:40 PM 13 11 24 7:45 PM 21 19 40 7:50 PM 13 16 29 7:55 PM 11 13 24 Total 2865 2848 5713 Quality Counts TRANSPORTATION DATA COLLECTION SERVICES Site Code: 14820417, 19 Location: Federal Way Costco Date: 11/3/2018 Ins Outs Total Hourly Ins Hourly Outs Hourly Total 6:00 AM 0 0 0 11 25 31 38 41 50 58 70 76 88 98 105 104 97 102 109 118 125 129 133 143 141 146 156 170 174 182 183 185 0 13 27 30 37 43 52 59 70 81 90 98 106 105 97 109 111 119 123 132 137 140 144 148 157 166 176 175 185 11 38 58 68 78 93 110 129 146 169 188 203 210 202 199 218 229 244 252 265 280 281 290 304 327 340 358 358 370 6:05 AM 0 0 0 6:10 AM 0 0 0 6:15 AM 0 0 0 6:20 AM 0 0 0 6:25 AM 0 0 0 6:30 AM 0 0 0 6:35 AM 0 0 0 6:40 AM 0 0 0 6:45 AM 0 0 0 6:50 AM 0 0 0 6:55 AM 11 0 11 7:00 AM 14 13 27 7:05 AM 6 14 20 7:10 AM 7 3 10 7:15 AM 3 7 10 7:20 AM 9 6 15 7:25 AM 8 9 17 7:30 AM 12 7 19 7:35 AM 6 11 17 7:40 AM 12 11 23 7:45 AM 10 9 19 7:50 AM 7 8 15 7:55 AM 10 8 18 8:00 AM 7 12 19 8:05 AM 11 6 17 8:10 AM 14 15 29 8:15 AM 12 9 21 8:20 AM 16 14 30 8:25 AM 12 13 25 8:30 AM 16 16 32 8:35 AM 16 16 32 8:40 AM 10 14 24 8:45 AM 15 13 28 8:50 AM 17 12 29 8:55 AM 24 17 41 9:00 AM 11 21 32 9:05 AM 19 16 35 9:10 AM 15 14 29 9:15 AM 14 19 33 Quality Counts TRANSPORTATION DATA COLLECTION SERVICES Site Code: 14820417, 19 Location: Federal Way Costco Date: 11/3/2018 Ins Outs Total Hourly Ins Hourly Outs Hourly Total 9:20 AM 11 10 21 180 188 193 199 203 209 212 210 216 212 223 233 246 241 240 241 245 248 250 247 248 260 255 254 247 253 257 252 249 250 246 248 250 251 252 250 255 254 245 255 181 182 188 190 195 201 204 207 209 210 210 211 226 232 228 230 234 236 243 242 241 246 250 249 248 249 253 250 251 251 248 246 247 244 248 249 249 250 248 253 361 370 381 389 398 410 416 417 425 422 433 444 472 473 468 471 479 484 493 489 489 506 505 503 495 502 510 502 500 501 494 494 497 495 500 499 504 504 493 508 9:25 AM 20 14 34 9:30 AM 21 22 43 9:35 AM 22 18 40 9:40 AM 14 19 33 9:45 AM 21 19 40 9:50 AM 20 15 35 9:55 AM 22 20 42 10:00 AM 17 23 40 10:05 AM 15 17 32 10:10 AM 26 14 40 10:15 AM 24 20 44 10:20 AM 24 25 49 10:25 AM 15 20 35 10:30 AM 20 18 38 10:35 AM 23 20 43 10:40 AM 18 23 41 10:45 AM 24 21 45 10:50 AM 22 22 44 10:55 AM 19 19 38 11:00 AM 18 22 40 11:05 AM 27 22 49 11:10 AM 21 18 39 11:15 AM 23 19 42 11:20 AM 17 24 41 11:25 AM 21 21 42 11:30 AM 24 22 46 11:35 AM 18 17 35 11:40 AM 15 24 39 11:45 AM 25 21 46 11:50 AM 18 19 37 11:55 AM 21 17 38 12:00 PM 20 23 43 12:05 PM 28 19 47 12:10 PM 22 22 44 12:15 PM 21 20 41 12:20 PM 22 24 46 12:25 PM 20 22 42 12:30 PM 15 20 35 12:35 PMJ 28 22 50 Quality Counts TRANSPORTATION DATA COLLECTION SERVICES Site Code: 14820417, 19 Location: Federal Way Costco Date: 11/3/2018 Ins Outs Total Hourly Ins Hourly Outs Hourly Total 12:40 PM 18 23 41 258 256 263 262 270 264 263 264 257 259 269 260 268 268 262 259 250 246 253 259 264 259 253 258 248 238 242 257 263 266 250 254 246 254 257 253 266 272 264 254 252 256 258 263 261 258 259 264 261 263 260 261 259 256 254 253 252 258 258 254 255 253 257 255 254 258 257 261 260 258 260 258 257 259 259 259 257 257 263 257 510 512 521 525 531 522 522 528 518 522 529 521 527 524 516 512 502 504 511 513 519 512 510 513 502 496 499 518 523 524 510 512 503 513 516 512 523 529 527 511 12:45 PM 23 25 48 12:50 PM 25 21 46 12:55 PM 20 22 42 1:00 PM 28 21 49 1:05 PM 22 16 38 1:10 PM 21 23 44 1:15 PM 22 25 47 1:20 PM 15 21 36 1:25 PM 22 24 46 1:30 PM 25 17 42 1:35 PM 19 23 42 1:40 PM 26 21 47 1:45 PM 23 22 45 1:50 PM 19 19 38 1:55 PM 17 21 38 2:00 PM 19 20 39 2:05 PM 18 22 40 2:10 PM 28 23 51 2:15 PM 28 21 49 2:20 PM 20 22 42 2:25 PM 17 22 39 2:30 PM 1 19 21 40 2:35 PM 24 21 45 2:40 PM 16 20 36 2:45 PM 13 26 39 2:50 PM 23 18 41 2:55 PM 32 25 57 3:00 PM 25 19 44 3:05 PM 21 20 41 3:10 PM 12 25 37 3:15 PM 32 19 51 3:20 PM 12 21 33 3:25 PM 25 24 49 3:30 PM 22 21 43 3:35 PM 20 21 41 3:40 PM 29 18 47 3:45 PM 19 26 45 3:50 PM 15 24 1 39 3:55 PMJ 22 1 19 1 41 Quality Counts TRANSPORTATION DATA COLLECTION SERVICES Site Code: 14820417, 19 Location: Federal Way Costco Date: 11/3/2018 Ins Outs Total Hourly Ins Hourly Outs Hourly Total 4:00 PM 17 17 34 246 255 501 245 258 503 255 252 507 244 255 499 255 253 508 248 249 497 248 250 498 243 249 492 237 250 487 235 250 485 247 242 489 246 244 490 250 248 498 255 248 503 253 250 503 255 248 503 253 250 503 251 250 501 247 250 497 254 252 506 248 256 504 239 248 487 230 253 483 231 246 477 229 245 474 225 242 467 219 235 454 224 235 459 226 233 459 227 233 460 229 233 462 219 231 450 223 224 447 228 223 451 225 220 445 220 222 442 213 217 430 195 209 404 183 201 384 167 182 349 4:05 PM 20 23 43 4:10 PM 22 19 41 4:15 PM 21 22 43 4:20 PM 23 19 42 4:25 PM 18 20 38 4:30 PM 22 22 44 4:35 PM 15 20 35 4:40 PM 23 19 42 4:45 PM 17 26 43 4:50 PM 27 16 43 4:55 PM 21 21 42 5:00 PM 21 21 42 5:05 PM 25 23 48 5:10 PM 20 21 41 5:15 PM 23 20 43 5:20 PM 21 21 42 5:25 PM 16 20 36 5:30 PM 18 22 40 5:35 PM 22 22 44 5:40 PM 17 23 40 5:45 PM 8 18 26 5:50 PM 18 21 39 5:55 PM 22 14 36 6:00 PM 19 20 39 6:05 PM 21 20 41 6:10 PM 14 14 28 6:15 PM 28 20 48 6:20 PM 23 19 42 6:25 PM 17 20 37 6:30 PM 20 22 42 6:35 PM 12 20 32 6:40 PM 21 16 37 6:45 PM 13 17 30 6:50 PM 15 18 33 6:55 PM 17 16 33 7:00 PM 12 15 27 7:05 PM 3 12 15 7:10 PM 2 6 8 7:15 PMJ 12 1 13 CEQuality Counts TRANSPORTATION DATA COLLECTION SERVICES Site Code: 14820417, 19 Location: Federal Way Costco Date: 11/3/2018 Ins Outs iotaI Hourly Ins I Hourly Outs Hourly Total 7:20 PM 10 12 22 154 175 329 141 164 305 125 147 272 117 130 247 100 119 219 91 105 196 81 92 173 70 82 152 7:25 PM 4 9 13 7:30 PM 4 5 9 7:35 PM 4 3 7 7:40 PM 4 5 9 7:45 PM 4 3 7 7:50 PM 5 5 10 7:55 PMJ 6 1 6 12 Totall 2789 1 2786 1 5575 Quality Counts TRANSPORTATION DATA COLLECTION SERVICES Site Code: 14830320 Location: Federal Way Costco Gas Station Queue Date: 11/1/2018 Time Queue Time Queue Time Queue Time Queue Time Queue Time Queue Time Queue 6:00:00 AM 0 8:00:00 AM 0 10:00:00 AM 4 12:00:00 PM 0 2:00:00 PM 14 4:00:00 PM 11 6:00:00 PM 10 6:01:00 AM 0 8:01:00 AM 0 10:01:00 AM 7 12:01:00 PM 3 2:01:00 PM 12 4:01:00 PM 11 6:01:00 PM 8 6:02:00 AM 0 8:02:00 AM 0 10:02:00 AM 6 12:02:00 PM 1 2:02:00 PM 11 4:02:00 PM 9 6:02:00 PM 7 6:03:00 AM 0 8:03:00 AM 0 10:03:00 AM 3 12:03:00 PM 4 2:03:00 PM 8 4:03:00 PM 12 6:03:00 PM 10 6:04:00 AM 0 8:04:00 AM 0 10:04:00 AM 3 12:04:00 PM 6 2:04:00 PM 8 4:04:00 PM 3 6:04:00 PM 9 6:05:00 AM 0 8:05:00 AM 1 10:05:00 AM 4 12:05:00 PM 4 2:05:00 PM 5 4:05:00 PM 2 6:05:00 PM 8 6:06:00 AM 0 8:06:00 AM 1 10:06:00 AM 6 12:06:00 PM 3 2:06:00 PM 5 4:06:00 PM 2 6:06:00 PM 12 6:07:00 AM 0 8:07:00 AM 0 10:07:00 AM 0 12:07:00 PM 2 2:07:00 PM 6 4:07:00 PM 6 6:07:00 PM 8 6:08:00 AM 0 8:08:00 AM 0 10:08:00 AM 3 12:08:00 PM 3 2:08:00 PM 5 4:08:00 PM 2 6:08:00 PM 10 6:09:00 AM 0 8:09:00 AM 0 10:09:00 AM 5 12:09:00 PM 3 2:09:00 PM 2 4:09:00 PM 3 6:09:00 PM 11 6:10:00 AM 0 8:10:00 AM 0 10:10:00 AM 2 12:10:00 PM 2 2:10:00 PM 1 4:10:00 PM 7 6:10:00 PM 7 6:11:00 AM 0 8:11:00 AM 0 10:11:00 AM 3 12:11:00 PM 4 2:11:00 PM 2 4:11:00 PM 3 6:11:00 PM 7 6:12:00 AM 0 8:12:00 AM 0 10:12:00 AM 4 12:12:00 PM 2 2:12:00 PM 4 4:12:00 PM 0 6:12:00 PM 5 6:13:00 AM 0 8:13:00 AM 0 10:13:00 AM 7 12:13:00 PM 4 2:13:00 PM 2 4:13:00 PM 3 6:13:00 PM 6 6:14:00 AM 0 8:14:00 AM 0 10:14:00 AM 5 12:14:00 PM 3 2:14:00 PM 2 4:14:00 PM 3 6:14:00 PM 5 6:15:00 AM 0 8:15:00 AM 0 10:15:00 AM 7 12:15:00 PM 4 2:15:00 PM 0 4:15:00 PM 1 6:15:00 PM 6 6:16:00 AM 0 8:16:00 AM 0 10:16:00 AM 7 12:16:00 PM 2 2:16:00 PM 1 4:16:00 PM 0 6:16:00 PM 6 6:17:00 AM 0 8:17:00 AM 1 10:17:00 AM 8 12:17:00 PM 1 2:17:00 PMJ 2 4:17:00 PM 0 6:17:00 PM 6 6:18:00 AM 0 8:18:00 AM 2 10:18:00 AM 5 12:18:00 PM 0 2:18:00 PM 1 4:18:00 PM 1 6:18:00 PM 4 6:19:00 AM 0 8:19:00 AM 1 10:19:00 AM 5 12:19:00 PM 3 2:19:00 PM 1 4:19:00 PM 1 6:19:00 PM 0 6:20:00 AM 0 8:20:00 AM 0 10:20:00 AM 5 12:20:00 PM 3 2:20:00 PM 1 4:20:00 PM 0 6:20:00 PM 1 6:21:00 AM 0 8:21:00 AM 0 10:21:00 AM 3 12:21:00 PM 4 2:21:00 PM 1 4:21:00 PM 1 6:21:00 PM 6 6:22:00 AM 0 8:22:00 AM 0 10:22:00 AM 3 12:22:00 PM 2 2:22:00 PM 2 4:22:00 PM 2 6:22:00 PM 3 6:23:00 AM 0 8:23:00 AM 0 10:23:00 AM 7 12:23:00 PM 4 2:23:00 PM 2 4:23:00 PM 3 6:23:00 PM 4 6:24:00 AM 0 8:24:00 AM 0 10:24:00 AM 5 12:24:00 PM 3 2:24:00 PM 3 4:24:00 PM 2 6:24:00 PM 5 6:25:00 AM 0 8:25:00 AM 0 10:25:00 AM 5 12:25:00 PM 3 2:25:00 PM 2 4:25:00 PM 3 6:25:00 PM 6 6:26:00 AM 0 8:26:00 AM 0 10:26:00 AM 4 12:26:00 PM 4 2:26:00 PM 1 4:26:00 PM 3 6:26:00 PM 4 6:27:00 AM 0 8:27:00 AM 0 10:27:00 AM 2 12:27:00 PM 2 2:27:00 PM 1 4:27:00 PM 3 6:27:00 PM 6 6:28:00 AM 0 8:28:00 AM 0 10:28:00 AM 0 12:28:00 PM 2 2:28:00 PM 0 4:28:00 PM 5 6:28:00 PM 9 6:29:00 AM 0 8:29:00 AM 0 10:29:00 AM 1 12:29:00 PM 5 2:29:00 PM 2 4:29:00 PM 5 6:29:00 PM 9 6:30:00 AM 0 8:30:00 AM 1 10:30:00 AM 2 12:30:00 PM 5 2:30:00 PM 0 4:30:00 PM 3 6:30:00 PM 11 6:31:00 AM 0 8:31:00 AM 1 10:31:00 AM 3 12:31:00 PM 4 2:31:00 PM 0 4:31:00 PM 7 6:31:00 PMJ 14 6:32:00 AM 0 8:32:00 AM 0 10:32:00 AM 5 12:32:00 PM 7 2:32:00 PM 0 4:32:00 PM 6 6:32:00 PM 8 6:33:00 AM 0 8:33:00 AM 1 10:33:00 AM 8 12:33:00 PM 11 2:33:00 PM 1 4:33:00 PM 3 6:33:00 PM 6 6:34:00 AM 0 8:34:00 AM 0 10:34:00 AM 4 12:34:00 PM 10 2:34:00 PM 3 4:34:00 PM 7 6:34:00 PM 3 6:35:00 AM 0 8:35:00 AM 0 10:35:00 AM 3 12:35:00 PM 10 2:35:00 PM 4 4:35:00 PMj 8 6:35:00 PM 6 6:36:00 AM 0 8:36:00 AM 0 10:36:00 AM 7 12:36:00 PM 7 2:36:00 PM 6 4:36:00 PM 5 6:36:00 PM 5 6:37:00 AM 0 8:37:00 AM 0 10:37:00 AM 8 12:37:00 PM 9 2:37:00 PM 5 4:37:00 PM 6 6:37:00 PM 4 6:38:00 AM 0 8:38:00 AM 0 10:38:00 AM 8 12:38:00 PM 12 2:38:00 PM 6 4:38:00 PM 3 6:38:00 PMJ 1 6:39:00 AM 0 8:39:00 AM 0 10:39:00 AM 10 12:39:00 PM 8 2:39:00 PM 5 4:39:00 PM 3 6:39:00 PM1 8 6:40:00 AM 0 8:40:00 AM 0 10:40:00 AM 10 12:40:00 PM 5 2:40:00 PM 3 4:40:00 PM 3 6:40:00 PM 13 6:41:00 AM 0 8:41:00 AM 2 10:41:00 AM 11 12:41:00 PM 7 2:41:00 PM 3 4:41:00 PM 4 6:41:00 PM 7 6:42:00 AM 0 8:42:00 AM 1 10:42:00 AM 9 12:42:00 PM 8 2:42:00 PM 1 4:42:00 PMJ 1 6:42:00 PM 5 6:43:00 AM 0 8:43:00 AM 0 10:43:00 AM 9 12:43:00 PM 5 2:43:00 PM 1 4:43:00 PM 2 6:43:00 PM 8 6:44:00 AM 0 8:44:00 AM 0 10:44:00 AM 8 12:44:00 PM 3 2:44:00 PM 6 4:44:00 PM 2 6:44:00 PM 6 6:45:00 AM 0 8:45:00 AM 0 10:45:00 AM 8 12:45:00 PM 7 2:45:00 PM 3 4:45:00 PM 1 6:45:00 PM 4 6:46:00 AM 0 8:46:00 AM 1 10:46:00 AM 7 12:46:00 PM 4 2:46:00 PM 2 4:46:00 PM 1 6:46:00 PMJ 2 6:47:00 AM 0 8:47:00 AM 0 10:47:00 AM 7 12:47!00 PM 4 2:47:00 PM 4 4:47:00 PM 1 6:47:00 PM 0 6:48:00 AM 0 8:48:00 AM 1 10:48:00 AM 7 12:48:00 PMJ 7 2:48:00 PMJ 2 4:48:00 PM 2 6:48:00 PM 4 6:49:00 AM 0 8:49:00 AM 1 10:49:00 AM 5 12:49:00 PM 12 2:49:00 PMJ 1 4:49:00 PMj 2 6:49:00 PM 2 6:50:00 AM 0 8:50:00 AM 0 10:50:00 AM 5 12:50:00 PM 8 2:50:00 PM 4 4:50:00 PMj 5 6:50:00 PM 2 6:51:00 AM 0 8:51:00 AM 2 10:51:00 AM 6 12:51:00 PM 14 2:51:00 PM 2 4:51:00 PM 5 6:51:00 PM 4 6:52:00 AM 0 8:52:00 AM 2 10:52:00 AM 12 12:52:00 PM 18 2:52:00 PM 3 4:52:00 PM 3 6:52:00 PM 7 6:53:00 AM 0 8:53:00 AM 2 10:53:00 AM 13 12:53:00 PM 11 2:53:00 PM 4 4:53:00 PM 6 6:53:00 PM 7 6:54:00 AM 0 8:54:00 AM 0 10:54:00 AM 12 12:54:00 PM 13 2:54:00 PM 5 4:54:00 PM 5 6:54:00 PM 5 6:55:00 AM 0 8:55:00 AM 0 10:55:00 AM 14 12:55:00 PM 16 2:55:00 PM 5 4:55:00 PM 5 6:55:00 PM 2 6:56:00 AM 0 8:56:00 AM 3 10:56:00 AM 13 12:56:00 PM 14 2:56:00 PMJ 6 4:56:00 PM 4 6:56:00 PM 3 6:57:00 AM 0 9:57:00 AM 0 10:57:00 AM 16 12:57:00 PM 15 2:57:00 PM 10 4:57:00 PM 11 6:57:00 PM 6 6:58:00 AM 0 8:58:00 AM 0 10:58:00 AM 12 12:58:00 PM 17 2:58:00 PMJ 8 4:58:00 PM 12 6:58:00 PM 3 6:59:00 AMI 0 8:59:00 AM 0 10:59:00 AM 14 12:59:00 PM 13 2:59:00 PMJ 5 4:59:00 PM 12 6:59:00 PMJ 0 a: Quality Counts TRANSPORTATION DATA COLLECTION SERVICES Site Code: 14830320 Location: Federal Way Costco Gas Station Queue Date: 11/1/2018 Time Queue Time Queue Time Queue Time Queue Time Queue Time Queue Time I Queue 7:00:00 AM 0 9:00:00 AM 0 11:00:00 AM 12 1:00:00 PM 11 3:00:00 PM 5 5:00:00 PM 9 7:00:00 PM 1 7:01:00 AM 0 9:01:00 AM 0 11:01:00 AM 14 1:01:00 PM 11 3:01:00 PM 7 5:01:00 PM 11 7:01:00 PM 1 7:02:00 AM 0 9:02:00 AM 0 11:02:00 AM 15 1:02:00 PM 10 3:02:00 PM 4 5:02:00 PM 10 7:02:00 PM 0 7:03:00 AM 0 9:03:00 AM 0 11:03:00 AM 12 1:03:00 PM 7 3:03:00 PM 5 5:03:00 PM 10 7:03:00 PM 0 7:04:00 AM 0 9:04:00 AM 2 11:04:00 AM 12 1:04:00 PM 7 3:04:00 PM 5 5:04:00 PM 10 7:04:00 PM 0 7:05:00 AM 0 9:05:00 AM 1 11:05:00 AM 10 1:05:00 PM 7 3:05:00 PM 3 5:05:00 PM 11 7:05:00 PMJ 5 7:06:00 AM 0 9:06:00 AM 0 11:06:00 AM 16 1:06:00 PM 10 3:06:00 PMj 4 5:06:00 PM 12 7;06:00 PM 7 7:07:00 AM 0 9:07:00 AM 0 11:07:00 AM 10 1:07:00 PM 10 3:07:00 PM 3 5:07:00 PMj 14 7:07:00 PM 9 7.08:00 AM 0 9:08:00 AM 0 11:08:00 AM 11 1:08:00 PM 10 3:08:00 PM 3 5:08:00 PMJ 6 7:08:00 PM 4 7:09:00 AM 0 9:09:00 AM 0 11:09:00 AM 13 1:09:00 PM 5 3:09:00 PM 0 5:09:00 PMJ 7 7:09:00 PM 9 7:10:00 AM 0 9:10:00 AM 1 11:10:00 AM 14 1:10:00 PM 7 3:10:00 PM 8 5:10:00 PM 8 7:10:00 PM 5 7:11:00 AM 0 9:11:00 AM 1 11:11:00 AM 12 1:11:00 PM 9 3:11:00 PM 7 5:11:00 PM 7 7:11:00 PM 5 7:12:00 AM 1 9:12:00 AM 1 11:12:00 AM 16 1:12:00 PM 9 3:12:00 PM 7 5:12:00 PM 5 7:12:00 PMJ 3 7:13:00 AM 1 9:13:00 AM 0 11:13:00 AM 14 1:13:00 PM 12 3:13:00 PMJ 4 5:13:00 PM 5 7:13:00 PM 4 7:14:00 AM 1 9:14:00 AM 1 11:14:00 AM 9 1:14:00 PM 17 3:14:00 PM 5 5:14:00 PM 9 7:14:00 PM 8 7.15:00 AM 0 9:15:00 AM 1 11:15:00 AM 12 1:15:00 PM 14 3:15:00 PM 6 5:15:00 PM 8 7:15:00 PM 14 7:16:00 AM 0 9:16:00 AM 3 11:16:00 AM 17 1:16:00 PM 17 3:16:00 PM 3 5:16:00 PM 7 7:16:00 PM 10 7:17:00 AM 0 9:17:00 AM 2 11:17:00 AM 17 1:17:00 PM 16 3:17:00 PM 2 5:17:00 PM 10 7:17:00 PM 12 7:18:00 AM 0 9:18:00 AM 3 11:18:00 AM 13 1:18:00 PM 20 3:18:00 PM 6 5:18:00 PM 7 7:19:00 PM 12 7:19:00 AM 0 9:19:00 AM 0 11:19:00 AM 13 1:19:00 PM 16 3:19:00 PM 4 5:19:00 PM 6 7:19:00 PM 12 7:20:00 AM 0 9:20:00 AM 2 11:20:00 AM 16 1:20:00 PM 17 3:20:00 PM 7 5:20:00 PM 12 7:20:00 PM 9 7:21:00 AM 0 9:21:00 AM 0 11:21:00 AM 14 1:21:00 PM 15 3:21:00 PMJ 7 5:21:00 PM 14 7:21:00 PM 12 7:22:00 AM 0 9:22:00 AM 0 11:22:00 AM 13 1:22:00 PM 12 3:22:00 PM 10 5:22:00 PM 9 7:22:00 PM 13 7:23:00 AM 1 9:23:00 AM 0 11:23:00 AM 18 1:23:00 PM 12 3:23:00 PM 7 5:23:00 PM 10 7:23:00 PM 9 7:24:00 AM 0 9:24:00 AM 0 11:24:00 AM 20 1:24:00 PM 13 3:24:00 PM 8 5:24:00 PM 10 7:24:00 PM 3 7:25:00 AM 0 9:25:00 AM 1 11:25:00 AM 14 1:25:00 PMJ 14 3:25:00 PM 11 5:25:00 PM 12 7:25:00 PM 3 7:26:00 AM 0 9:26:00 AM 0 11:26:00 AM 15 1:26:00 PM 15 3:26:00 PM 12 5:26:00 PMJ 7 7:26:00 PM 4 7:27:00 AM 0 9:27:00 AM 1 11:27:00 AM 12 1:27:00 PM 15 3:27:00 PM 14 5:27:00 PM 11 7:27:00 PM 3 7:28:00 AM 0 9:28:00 AM 4 11:28:00 AM 16 1:28:00 PM 19 3:28:00 PM 12 5:28:00 PM 12 7:28:00 PM 2 7:29:00 AM 0 9:29:00 AM 0 11:29:00 AM 16 1:29:00 PM 18 3:29:00 PMJ 12 5:29:00 PM 9 7:29:00 PM 5 7:30:00 AM 0 9:30:00 AM 2 11:30:00 AM 14 1:30:00 PM 16 3:30:00 PM 12 5:30:00 PM 10 7:30:00 PM 2 7:31:00 AM 0 9:31:00 AM 0 11:31:00 AM 17 1:31:00 PM 19 3:31:00 PM 14 5:31:00 PM 13 7:31:00 PM 2 7:32:00 AM 0 9:32:00 AM 1 11:32:00 AM 16 1:32:00 PMJ 16 3:32:00 PM 13 5:32:00 PM 8 7:32:00 PM 2 7:33:00 AM 0 9:33:00 AM 0 11:33:00 AM 11 1:33:00 PMJ 16 3:33:00 PM 12 5:33:00 PMJ 13 7:33:00 PM 4 7:34:00 AM 0 9:34:00 AM 0 11:34:00 AM 12 1:34:00 PM 9 3:34:00 PM 9 5:34:00 PM 14 7:34:00 PMj 3 7:35:00 AM 0 9:35:00 AM 0 11:35:00 AM 11 1:35:00 PM 9 3:35:00 PM 9 5:35:00 PM 9 7:35:00 PM 2 7:36:00 AM 0 9:36:00 AM 0 11:36:00 AM 8 1:36:00 PM 6 3:36:00 PMJ 9 5:36:00 PM 8 7:36:00 PM 1 7:37:00 AM 0 9:37:00 AM 0 11:37:00 AM 12 1:37:00 PM 5 3:37:00 PM 5 5:37:00 PM 12 7:37:00 PM 0 7:38:00 AM 0 9:38:00 AM 0 11:38:00 AM 9 1:38:00 PM 2 3:38:00 PM 3 5:38:00 PM 5 7:38:00 PM 1 7:39:00 AM 0 9:39:00 AM 0 11:39:00 AM 14 1:39:00 PM 2 3:39:00 PM 8 5:39:00 PM 9 7:39:00 PM 3 7:40:00 AM 0 9:40:00 AM 2 11:40:00 AM 14 1:40:00 PMJ 2 3:40:00 PM 2 5:40:00 PMJ 9 7:40:00 PM 3 7:41:00 AM 0 9:41:00 AM 2 11:41:00 AM 16 1:41:00 PM 0 3:41:00 PM 2 5:41:00 PMJ 6 7:41:00 PMj 2 7:42:00 AM 0 9:42:00 AM 4 11:42:00 AM 9 1:42:00 PM 3 3:42:00 PM 4 5:42:00 PM 4 7:42:00 PM 0 7:43:00 AM 0 9:43:00 AM 1 11:43:00 AM 10 1:43:00 PM 2 3:43:00 PM 2 5:43:00 PM 2 7:43:00 PM 0 7:44:00 AM 0 9:44:00 AM 1 11:44:00 AM 7 1:44:00 PM 2 3:44:00 PM 6 5:44:00 PM 10 7:44:00 PM 1 7:45:00 AM 0 9:45:00 AM 2 11:45:00 AM 11 1:45:00 PM 2 3:45:00 PM 2 5:45:00 PM 10 7:45:00 PM 1 7:46:00 AM 0 9:46:00 AM 2 11:46:00 AM 7 1:46:00 PM 2 3:46:00 PM 5 5:46:00 PM 9 7:46:00 PM 1 7:47:00 AM 0 9:47:00 AM 0 11:47:00 AM 3 1:47:00 PM 4 3:47:00 PM 6 5:47:00 PM 10 7:47:00 PM 6 7:48:00 AM 0 9:48:00 AM 3 11:48:00 AM 2 1:48:00 PM 2 3:48:00 PM 7 5:48:00 PM 9 7:48:00 PM 6 7:49:00 AM 0 9:49:00 AM 1 11:49:00 AM 3 1:49:00 PM 1 3:49:00 PM 7 5:49:00 PM 12 7:49:00 PM 4 7:50:00 AM 1 9:50:00 AM 0 11:50:00 AM 4 1:50:00 PM 2 3:50:00 PM 11 5:50:00 PM 12 7:50:00 PM 3 7:51:00 AM 0 9:51:00 AM 0 11:51:00 AM 3 1:51:00 PM 3 3:51:00 PM 11 5:51:00 PM 7 7:51:00 PM 4 7:52:00 AM 0 9:52:00 AM 0 11:52:00 AM 3 1:52:00 PM 3 3:52:00 PM 10 5:52:00 PM 8 7:52:00 PM 3 7:53:00 AM 0 9:53:00 AM 0 11:53:00 AM 4 1:53:00 PM 5 3:53:00 PM 8 5:53:00 PM 12 7:53:00 PM 3 7:54:00 AM 0 9:54:00 AM 0 11:54:00 AM 5 1:54:00 PMJ 3 3:54:00 PM 6 5:54:00 PM 9 7:54:00 PMj 2 7:55:00 AM 0 9:55:00 AM 0 11:55:00 AM 6 1:55:00 PM 5 3:55:00 PM 7 5:55:00 PM 6 7:55:00 PM 2 7:56:00 AM 0 9:56:00 AM 0 11:56:00 AM 3 1:56:00 PM 8 3:56:00 PM 11 5:56:00 PM 7 7:56:00 PM 2 7:57:00 AM 0 9:57:00 AM 0 11:57:00 AM 2 1:57:00 PM 12 3:57:00 PM 10 5:57:00 PM 7 7:57:00 PM 0 7:58:00 AM 0 9:58:00 AM 1 0 11:58:00 AM 2 1:58:00 PM 14 3:58:00 PM 10 5:58:00 PM 2 7:58:00 PM 0 7:59:00 AM 0 9:59:00 AM 1 11:59:00 AMI 1 1:59:00 PM 13 3:59:00 PMJ 8 5:59:00 PM 3 7:59:00 PM 0 a: Quality Counts TRANSPORTATION DATA COLLECTION SERVICES Site Code: 14830321 Location: Federal Way Costco Gas Expansion Queue Date: 11/3/2018 Time Queue Time Queue Time Queue Time Queue Time Queue Time Queue Time Queue 6:00:00 AM 0 8:00:00 AM 0 10:00:00 AM 8 12:00:00 PM 13 2:00:00 PM 20 4:00:00 PM 12 6:00:00 PM 2 6:01:00 AM 0 8:01:00 AM 0 10:01:00 AM 4 12:01:00 PM 13 2:01:00 PM 22 4:01:00 PM 16 6:01:00 PM 3 6:02:00 AM 0 8:02:00 AM 0 10:02:00 AM 3 12:02:00 PM 13 2:02:00 PM 19 4:02:00 PM 14 6:02:00 PM 1 6:03:00 AM 0 8:03:00 AM 0 10:03:00 AM 2 12:03:00 PM 13 2:03:00 PM 22 4:03:00 PM 8 6:03:00 PM 1 6:04:00 AM 0 8:04:00 AM 0 10:04:00 AM 3 12:04:00 PM 11 2:04:00 PM 20 4:04:00 PM 13 6:04:00 PM 2 6:05:00 AM 0 8:05:00 AM 0 10:05:00 AM 4 12:05:00 PM 12 2:05:00 PM 20 4:05:00 PM 13 6:05:00 PM 3 6:06:00 AM 0 8:06:00 AM 0 10:06:00 AM 9 12:06:00 PM 14 2:06:00 PM 21 4:06:00 PM 10 6:06:00 PM 0 6:07:00 AM 0 8:07:00 AM 0 10:07:00 AM 9 12:07:00 PM 15 2:07:00 PM 23 4:07:00 PM 10 6:07:00 PM 4 6:08:00 AM 0 8:08:00 AM 0 10:08:00 AM 6 12:08:00 PM 16 2:08:00 PM 16 4:08:00 PM 10 6:08:00 PM 7 6:09:00 AM 0 8:09:00 AM 0 10:09:00 AM 6 12:09:00 PM 18 2:09:00 PM 17 4:09:00 PM 12 6:09:00 PM 6 6:10:00 AM 0 8:10:00 AM 0 10:10:00 AM 3 12:10:00 PM 17 2:10:00 PM 16 4:10:00 PM 9 6:10:00 PM 5 6:11:00 AM 0 8:11:00 AM 0 10:11:00 AM 3 12:11:00 PM 19 2:11:00 PM 15 4:11:00 PM 10 6:11:00 PM 6 6:12:00 AM 0 8:12:00 AM 0 10:12:00 AM 6 12:12:00 PM 25 2:12:00 PM 17 4:12:00 PM 7 6:12:00 PM 5 6:13:00 AM 0 8:13:00 AM 1 10:13:00 AM 10 12:13:00 PM 25 2:13:00 PM 17 4:13:00 PM 8 6:13:00 PM 0 6:14:00 AM 0 8:14:00 AM 1 10:14:00 AM 11 12:14:00 PM 21 2:14:00 PM 18 4:14:00 PM 13 6:14:00 PM 0 6:15:00 AM 0 8:15:00 AM 0 10:15:00 AM 9 12:15:00 PM 22 2:15:00 PM 22 4:15:00 PM 13 6:15:00 PM 2 6:16:00 AM 0 8:16:00 AM 0 10:16:00 AM 10 12:16:00 PM 19 2:16:00 PM 21 4:16:00 PM 14 6:16:00 PM 3 6:17:00 AM 0 8:17:00 AM 0 10:17:00 AM 9 12:17:00 PM 19 2:17:00 PM 21 4:17:00 PM 13 6:17:00 PM 3 6:18:00 AM 0 8:18:00 AM 0 10:18:00 AM 9 12:18:00 PMJ 19 2:18:00 PMj 20 4:18:00 PM 14 6:18:00 PM 3 6:19:00 AM 0 8:19:00 AM 0 10:19:00 AM 15 12:19:00 PMJ 19 2:19:00 PM 24 4:19:00 PM 14 6:19:00 PM 2 6:20:00 AM 0 8:20:00 AM 0 10:20:00 AM 16 12:20:00 PM 19 2:20:00 PM 22 4:20:00 PM 13 6:20:00 PM 8 6:21:00 AM 0 8:21:00 AM 0 10:21:00 AM 12 12:21:00 PM 19 2:21:00 PM 27 4:21:00 PM 9 6:21:00 PM 9 6:22:00 AM 0 8:22:00 AM 0 10:22:00 AM 15 12:22:00 PM 21 2:22:00 PM 23 4:22:00 PM 11 6:22:00 PM 8 6:23:00 AM 0 8:23:00 AM 2 10:23:00 AM 17 12:23:00 PM 21 2:23:00 PM 21 4:23:00 PM 12 6:23:00 PM 14 6:24:00 AM 0 8:24:00 AM 0 10:24:00 AM 16 12:24:00 PM 20 2:24:00 PM 23 4:24:00 PM1 15 6:24:00 PM 17 6:25:00 AM 0 8:25:00 AM 0 10:25:00 AM 15 12:25:00 PM 23 2:25:00 PMj 22 4:25:00 PM 13 6:25:00 PM 15 6:26:00 AM 0 8:26:00 AM 0 10:26:00 AM 16 12:26:00 PM 21 2:26:00 PM 20 4:26:00 PM 14 6:26:00 PM 11 6:27:00 AM 0 8:27:00 AM 0 10:27:00 AM 14 12:27:00 PM 21 2:27:00 PM 22 4:27:00 PM 14 6:27:00 PM 5 6:28:00 AM 0 8:28:00 AM 0 10:28:00 AM 15 12:28:00 PM 16 2:28:00 PM 24 4:28:00 PM 10 6:28:00 PM 6 6:29:00 AM 0 8:29:00 AMI 0 10:29:00 AM 10 12:29:00 PM 19 2:29:00 PM 24 4:29:00 PM 14 6:29:00 PM 10 6:30:00 AM 0 8:30:00 AM 0 10:30:00 AM 8 12:30:00 PM 19 2:30:00 PM 19 4:30:00 PM 13 6:30:00 PM 10 6:31:00 AM 0 8:31:00 AM 0 10:31:00 AM 10 12:31:00 PM 18 2:31:00 PM 18 4:31:00 PMJ 13 6:31:00 PMJ 4 6:32:00 AM 0 8:32:00 AM 0 10:32:00 AM 9 1 12:32:00 PM 12 2:32:00 PMJ 18 4:32:00 PM 16 6:32:00 PM 6 6:33:00 AM 0 8:33:00 AM 1 10:33:00 AM 11 12:33:00 PM 12 2:33:00 PMj 18 4:33:00 PM 10 6:33:00 PM 8 6:34:00 AM 0 8:34:00 AM 1 10:34:00 AM 9 12:34:00 PM 13 2:34:00 PM 15 4:34:00 PM 10 6:34:00 PM 5 6:35:00 AM 0 8:35:00 AM 0 10:35:00 AM 11 12:35:00 PM 12 2:35:00 PM 16 4:35:00 PM 12 6:35:00 PM 6 6:36:00 AM 0 8:36:00 AM 0 10:36:00 AM 8 12:36:00 PM 14 2:36:00 PM 15 4:36:00 PM 14 6:36:00 PM 6 6:37:00 AM 0 8:37:00 AM 0 10:37:00 AM 13 12:37:00 PM 19 2:37:00 PM 20 4:37:00 PM 10 6:37:00 PM 2 6:38:00 AM 0 8:38:00 AM 0 10:38:00 AM 9 12:38:00 PMJ 22 2:38:00 PM 19 4:38:00 PMJ 10 6:38:00 PMJ 1 6:39:00 AM 0 8:39:00 AM 0 10:39:00 AM 11 12:39:00 PMJ 21 2:39:00 PM 14 4:39:00 PM 12 6:39:00 PM 2 6:40:00 AM 0 8:40:00 AM 0 10:40:00 AM 11 12:40:00 PM 17 2:40:00 PM 18 4:40:00 PM 10 6:40:00 PM 3 6:41:00 AM 0 8:41:00 AM 0 10:41:00 AM 10 12:41:00 PM 17 2:41:00 PM 18 4:41:00 PM 8 6:41:00 PM 5 6:42:00 AM 0 8:42:00 AM 0 10:42:00 AM 10 12:42:00 PM 19 2:42:00 PM 17 4:42:00 PM 9 6:42:00 PM 5 6:43:00 AM 0 8:43:00 AM 0 10:43:00 AM 5 12:43:00 PM 16 2:43:00 PM 16 4:43:00 PM 10 6:43:00 PM 6 6:44:00 AM 0 8:44:00 AM 0 10:44:00 AM 4 12:44:00 PM 18 2:44:00 PM 15 4:44:00 PM 10 6:44:00 PM 6 6:45:00 AM 0 8:45:00 AM 0 10:45:00 AM 10 12:45:00 PM 13 2:45:00 PM 12 4:45:00 PMJ 9 6:45:00 PM 6 6:46:00 AM 0 8:46:00 AM 1 10:46:00 AM 11 12:46:00 PM 17 2:46:00 PM 9 4:46:00 PM 9 6:46:00 PM 6 6:47:00 AM 0 8:47:00 AM 1 10:47:00 AM 6 12:47:00 PM 12 2:47:00 PM 11 4:47:00 PM 12 6:47:00 PM 2 6:48:00 AM 0 8:48:00 AM 1 10:48:00 AM 10 12:48:00 PM 11 2:48:00 PM 5 4:48:00 PM 9 6:48:00 PM 3 6:49:00 AM 0 8:49:00 AM 0 10:49:00 AM 13 12:49:00 PM 12 2:49:00 PM 6 4:49:00 PM 5 6:49:00 PM 4 6:50:00 AM 0 8:50:00 AM 0 10:50:00 AM 14 12:50:00 PM 14 2:50:00 PM 6 4:50:00 PM 5 6:50:00 PM 3 6:51:00 AM 0 8:51:00 AM 1 10:51:00 AM 14 12:51:00 PM 18 2:51:00 PM 5 4:51:00 PM 7 6:51:00 PM 2 6:52:00 AM 0 8:52:00 AM 0 10:52:00 AM 16 12:52:00 PMJ 12 2:52:00 PMJ 8 4:52:00 PM 7 6:52:00 PM 0 6:53:00 AM 0 8:53:00 AM 0 10:53:00 AM 18 12:53:00 PM 13 2:53:00 PMJ 9 4:53:00 PM 5 6:53:00 PMJ 0 6:54:00 AM 0 8:54:00 AM 1 10:54:00 AM 15 12:54:00 PM 16 2:54:00 PM 10 4:54:00 PM 9 6:54:00 PM 1 6:55:00 AM 0 8:55:00 AM 1 10:55:00 AM 13 12:55:00 PM 17 2:55:00 PM 10 4:55:00 PM 11 6:55:00 PM 1 6:56:00 AM 0 9:56:00 AM 0 10:56:00 AM 13 12:56:00 PM 15 2:56:00 PM 6 4:56:00 PM 16 6:56:00 PM 2 6:57:00 AM 0 8:57:00 AM 0 10:57:00 AM 14 12:57:00 PM 14 2:57:00 PM 10 4:57:00 PMj 16 6:57:00 PM 0 6:58:00 AM 0 8:58:00 AM 2 1 10:58:00 AMI 10 12:58:00 PM 13 2:58:00 PM 11 4:58:00 PM 15 6:58:00 PM 2 6:59:00 AM 0 8:59:00 AMI 2 10:59:00 AMI 13 1 12:5950 PMJ 13 1 2:59:00 PM 13 4:59:00 PMJ 12 1 6:59:00 PM 2 a: Quality Counts TRANSPORTATION DATA COLLECTION SERVICES Site Code: 14830321 Location: Federal Way Costco Gas Expansion Queue Date: 11/3/2018 Time Queue Time Queue Time Queue Time Queue Time Queue Time Queue I Time Queue 7:00:00 AM 0 9:00:00 AM 4 11:00:00 AM 14 1:00:00 PM 12 3:00:00 PM 17 5:00:00 PM 13 7:00:00 PM 1 7:01:00 AM 0 9:01:00 AM 3 11:01:00 AM 15 1:01:00 PM 15 3:01:00 PM 20 5:01:00 PM 14 7:01:00 PM 1 7:02:00 AM 1 9:02:00 AM 2 11:02:00 AM 12 1:02:00 PM 17 3:02:00 PM 24 5:02:00 PM 17 7:02:00 PM 1 7:03:00 AM 0 9:03:00 AM 0 11:03:00 AM 11 1:03:00 PM 22 3:03:00 PM 23 5:03:00 PM 17 7:03:00 PM 0 7:04:00 AM 0 9:04:00 AM 0 11:04:00 AM 8 1:04:00 PM 14 3:04:00 PM 19 5:04:00 PM 15 7:04:00 PM 0 7:05:00 AM 0 9:05:00 AM 0 11:05:00 AM 8 1:05:00 PM 21 3:05:00 PMj 22 5:05:00 PMj 16 7:05:00 PM 0 7:06:00 AM 0 9:06:00 AM 0 11:06:00 AM 3 1:06:00 PMJ 26 3:06:00 PM 22 5:06:00 PM 14 7:06:00 PMJ 0 7:07:00 AM 0 9:07:00 AM 0 11:07:00 AM 5 1:07:00 PMJ 23 3:07:00 PM 21 5:07:00 PM 18 7:07:00 PM 0 7:08:00 AM 0 9:08:00 AM 0 11:08:00 AM 8 1:08:00 PM 19 3:08:00 PM 21 5:08:00 PM 17 7:08:00 PM 0 7:09:00 AM 0 9:09:00 AM 0 11:09:00 AM 7 1:09:00 PM 22 3:09:00 PM 19 5:09:00 PM 19 7:09:00 PM 0 7:10:00 AM 0 9:10:00 AM 0 11:10:00 AM 13 1:10:00 PM 19 3:10:00 PM 20 5:10:00 PM 16 7:10:00 PM 0 7:11:00 AM 0 9:11:00 AM 0 11:11:00 AM 13 1:11:00 PM 21 3:11:00 PM 18 5:11:00 PM 16 7:11:00 PM 0 7:12:00 AM 0 9:12:00 AM 2 11:12:00 AM 14 1:12:00 PM 20 3:12:00 PMJ 22 5:12:00 PMJ 15 7:12:00 PM 0 7:13:00 AM 0 9:13:00 AM 1 11:13:00 AM 14 1:13:00 PM 19 3:13:00 PMJ 19 5:13:00 PM 17 7:13:00 PM 0 7:14:00 AM 0 9:14:00 AM 1 11:14:00 AM 15 1:14:00 PM 19 3:14:00 PM 14 5:14:00 PM 19 7:14:00 PM 0 7:15:00 AM 0 9:15:00 AM 1 11:15:00 AM 15 1:15:00 PM 19 3:15:00 PM 12 5:15:00 PM 17 7:15:00 PM 0 7:16:00 AM 0 9:16:00 AM 1 11:16:00 AM 20 1:16:00 PM 21 3:16:00 PM 13 5:16:00 PM 15 7:16:00 PM 0 7:17:00 AM 0 9:17:00 AM 0 11:17:00 AM 24 1:17:00 PM 21 3:17:00 PM 17 5:17:00 PM 19 7:17:00 PM 0 7:18:00 AM 0 9:18:00 AM 0 11:18:00 AM 22 1:18:00 PM 25 3:18:00 PM 18 5:18:00 PM 15 7:18:00 PM 0 7:19:00 AM 0 9:19:00 AM 0 11:19:00 AM 21 1:19:00 PM 22 3:19:00 PM 21 5:19:00 PM 20 7:19:00 PM 0 7:20:00 AM 0 9:20:00 AM 0 11:20:00 AM 21 1:20:00 PM 18 3:20:00 PMj 24 5:20:00 PM 22 7:20:00 PM 0 7:21:00 AM 0 9:21:00 AM 0 11:21:00 AM 16 1:21:00 PM 21 3:21:00 PM1 25 5:21:00 PM 14 7:21:00 PM 0 7:22:00 AM 0 9:22:00 AM 0 11:22:00 AM 19 1:22:00 PM 21 3:22:00 PM1 20 5:22:00 PM 16 7:22:00 PM 0 7:23:00 AM 0 9:23:00 AM 0 11:23:00 AM 18 1:23:00 PM 21 3:23:00 PM 18 5:23:00 PM 19 7:23:00 PM 1 7:24:00 AM 0 9:24:00 AM 0 11:24:00 AM 15 1:24:00 PM 16 3:24:00 PM 18 5:24:00 PM 20 7:24:00 PM 0 7:25:00 AM 0 9:25:00 AM 0 11:25:00 AM 17 1:25:00 PM 16 3:25:00 PM 15 5:25:00 PM 18 7:25:00 PM 0 7:26:00 AM 0 9:26:00 AM 0 11:26:00 AM 15 1:26:00 PM1 19 3:26:00 PM 11 5:26:00 PM 17 7:26:00 PM 0 7:27:00 AM 0 9:27:00 AM 1 11:27:00 AM 11 1:27:00 PM1 20 3:27:00 PM 14 5:27:00 PM 17 7:27:00 PM 0 7:28:00 AM 0 9:28:00 AM 1 11:28:00 AM 14 1:28:00 PM1 19 3:28:00 PM 15 5:28:00 PM 17 7:28:00 PM 0 7:29:00 AM 0 9:29:00 AM 1 11:29:00 AM 17 1:29:00 PM1 17 3:29:00 PMJ 16 5:29:00 PM 16 7:29:00 PM 0 7:30:00 AM 0 9:30:00 AM 3 11:30:00 AM 11 1:30:00 PM 16 3:30:00 PM 13 5:30:00 PM 14 7:30:00 PM 0 7:31:00 AM 0 9:31:00 AM 0 11:31:00 AM 16 1:31:00 PM 18 3:31:00 PM 13 5:31:00 PMJ 19 7:31:00 PM 0 7:32:00 AM 0 9:32:00 AM 1 11:32:00 AM 14 1:32:00 PM 21 3:32:00 PM 15 5:32:00 PM 13 7:32:00 PM 0 7:33:00 AM 0 9:33:00 AM 4 11:33:00 AM 15 1:33:00 PM 16 3:33:00 PM 18 5:33:00 PM 9 7:33:00 PM 0 7:34:00 AM 0 9:34:00 AM 3 11:34:00 AM 14 1:34:00 PM 18 3:34:00 PM 15 5:34:00 PM 12 7:34:00 PM 0 7:35:00 AM 0 9:35:00 AM 2 11:35:00 AM 16 1:35:00 PM 20 3:35:00 PM 14 5:35:00 PM 11 7:35:00 PM 0 7:36:00 AM 0 9:36:00 AM 0 11:36:00 AM 19 1:36:00 PM 20 3:36:00 PM 17 5:36:00 PM 13 7:36:00 PM 0 7:37:00 AM 0 9:37:00 AM 2 11:37:00 AM 15 1:37:00 PM 19 3:37:00 PM 16 5:37:00 PM 9 7:37:00 PM 0 7:38:00 AM 0 9:38:00 AM 1 11:38:00 AM 17 1:38:00 PM 17 3:38:00 PM 18 5:38:00 PMJ 9 7:38:00 PM 0 7:39:00 AM 0 9:39:00 AM 4 11:39:00 AM 18 1:39:00 PM 21 3:39:00 PM 18 5:39:00 PM 11 7:39:00 PM 0 7:40:00 AM 0 9:40:00 AM 4 11:40:00 AM 14 1:40:00 PM 18 3:40:00 PM 14 5:40:00 PM 11 7:40:00 PM 0 7:41:00 AM 0 9:41:00 AM 3 11:41:00 AM 11 1:41:00 PM 18 3:41:00 PM 14 5:41:00 PM 11 7:41:00 PM 0 7:42:00 AM 0 9:42:00 AM 2 11:42:00 AM 12 1:42:00 PM 19 3:42:00 PM 20 5:42:00 PM 9 7:42:00 PM 0 7:43:00 AM 0 9:43:00 AM 1 11:43:00 AM 12 1:43:00 PM 20 3:43:00 PM 25 5:43:00 PM 9 7:43:00 PM 0 7:44:00 AM 0 9:44:00 AM 2 11:44:00 AM 11 1:44:00 PM 21 3:44:00 PM 27 5:44:00 PM 4 7:44:00 PM 0 7:45:00 AM 0 9:45:00 AM 2 11:45:00 AM 7 1:45:00 PM 20 3:45:00 PM 22 5:45:00 PM 6 7:45:00 PM 0 7:46:00 AM 0 9:46:00 AM 1 11:46:00 AM 8 1:46:00 PM 23 3:46:00 PM 22 5:46:00 PM 8 1 7:46:00 PM 0 7:47:00 AM 0 9:47:00 AM 1 11:47:00 AM 12 1:47:00 PM 25 3:47:00 PM 21 5:47:00 PM 6 7:47:00 PM 0 7:48:00 AM 0 9:48:00 AM 3 11:48:00 AM 7 1:48:00 PM 18 3:48:00 PM 23 5:48:00 PM 4 7:48:00 PM 0 7:49:00 AM 0 9:49:00 AM 2 11:49:00 AM 6 1:49:00 PM 22 3:49:00 PM 22 5:49:00 PM 1 7:49:00 PM 0 7:50:00 AM 0 9:50:00 AM 2 11:50:00 AM 11 1:50:00 PM 26 3:50:00 PM 20 5:50:00 PM 0 7:50:00 PM 0 7:51:00 AM 0 9:51:00 AM 3 11:51:00 AM 12 1:51:00 PM 23 3:51:00 PM 21 5:51:00 PM 0 7:51:00 PM 0 7:52:00 AM 0 9:52:00 AM 2 11:52:00 AM 12 1:52:00 PM 21 3:52:00 PM 15 5:52:00 PM 1 7:52:00 PM 0 7:53:00 AM 0 9:53:00 AM 6 11:53:00 AM 11 1:53:00 PM 22 3:53:00 PM 18 5:53:00 PM 1 7:53:00 PM 0 7:54:00 AM 0 9:54:00 AM 9 11:54:00 AM 10 1:54:00 PM 23 3:54:00 PM 15 5:54:00 PM 0 7:54:00 PM 0 7:55:00 AM 0 9:55:00 AM 2 11:55:00 AM 12 1:55:00 PM 22 3:55:00 PM 11 5:55:00 PM 0 7:55:00 PM 0 7:56:00 AM 0 9:56:00 AM 4 11:56:00 AM 12 1:56:00 PM 20 3:56:00 PM 11 5:56:00 PM 1 7:56:00 PM 0 7:57:00 AM 0 9:57:00 AM 8 11:57:00 AM 12 1:57:00 PM 23 3:57:00 PM 17 1 5:57:00 PM 3 7:57:00 PM 0 7:58:00 AM 0 9:58:00 AM 6 11:58:00 AM 12 1:58:00 PM 20 3:58:00 PM 15 1 5:58:00 PM 4 7:58:00 PM 0 7:59:00 AM 0 9:59:00 AM 8 11:59:00 AM 14 1:59:00 PM 23 3:59:00 PMJ 11 1 5:59:00 PMJ 3 7:59:00 PM 0 Appendix B Operational Analysis Results HCM 6th Signalized Intersection Summary 5050: Enchanted Pkwy S & S 352 St 11/20/2019 --,;v 4--- t 1 4/ AAnvamant FRI FRT FRR WRI WRT WRR NRI NRT NRR RRI SRT SRR Lane Configurations t r t r ti tt r Traffic Volume (veh/h) 35 66 61 198 114 222 94 873 194 209 1345 91 Future Volume (vehlh) 35 66 61 198 114 222 94 873 194 209 1345 91 Initial Q (Qb), veh 0 0 0 0 0 0 0 0 0 0 0 0 Ped-Bike Adj(A_pbT) 1.00 0.98 0.99 0.99 1.00 0.99 1.00 0.99 Parking Bus, Adj 1.00 1.00 0.99 1.00 1.00 0.99 1.00 1.00 1.00 1.00 1.00 1.00 Work Zone On Approach No No No No Adj Sat Flow, veh/h/In 1805 1894 1850 2333 2318 2303 1841 1870 1870 1879 1835 1850 Adj Flow Rate, veh/h 38 71 66 213 123 239 101 939 209 225 1446 98 Peak Hour Factor 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 Percent Heavy Veh, % 6 0 3 0 1 2 4 2 2 1 4 3 Cap, veh/h 138 141 114 234 256 211 464 1965 437 397 1819 813 Arrive On Green 0.02 0.07 0.07 0.06 0.11 0.11 0.21 0.68 0.67 0.03 0.35 0.35 Sat Flow, veh/h 1719 1894 1530 2222 2318 1915 1753 2886 642 1790 3486 1557 Grp Volume(v), veh/h 38 71 66 213 123 239 101 578 570 225 1446 98 Grp Sat Flow(s),veh/h/In 1719 1894 1530 2222 2318 1915 1753 1777 1751 1790 1743 1557 Q Serve(g_s), s 0.0 5.8 6.7 7.7 8.0 15.5 0.0 24.6 24.8 6.0 59.8 6.8 Cycle Q Clear(g_c), s 0.0 5.8 6.7 7.7 8.0 15.5 0.0 24.6 24.8 6.0 59.8 6.8 Prop In Lane 1.00 1.00 1.00 1.00 1.00 0.37 1.00 1.00 Lane Grp Cap(c), vehlh 138 141 114 234 256 211 464 1210 1192 397 1819 813 V/C Ratio(X) 0.28 0.50 0.58 0.91 0.48 1.13 0.22 0.48 0.48 0.57 0.79 0.12 Avail Cap(c_a), veh/h 153 367 296 313 601 497 464 1210 1192 583 1819 813 HCM Platoon Ratio 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 0.67 0.67 0.67 Upstream Filter(I) 0.98 0.98 0.98 1.00 1.00 1.00 1.00 1.00 1.00 0.39 0.39 0.39 Uniform Delay (d), slveh 70.5 71.2 71.6 71.8 66.9 54.9 44.0 12.1 12.2 10.3 44.3 27.1 Incr Delay (d2), s/veh 0.4 1.0 1.7 21.3 0.5 64.5 0.1 1.4 1.4 0.2 1.5 0.1 Initial Q Delay(d3),s/veh 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 %ile BackOfQ(95%),veh/In 2.7 5.1 4.9 15.3 8.4 17.8 5.8 14.8 14.8 3.8 32.4 4.4 Unsig. Movement Delay, slveh LnGrp Delay(d),s/veh 70.9 72.2 73.3 93.2 67.4 119.4 44.1 13.4 13.6 10.5 45.8 27.2 LnGrp LOS E E E F E F D B B B D C Approach Vol, veh/h 175 575 1249 1769 Approach Delay, s/veh 72.3 98.6 16.0 40.3 Approach LOS E F B D Timer - Assigned Phs 1 2 3 4 5 6 7 8 Phs Duration (G+Y+Rc), s 13.3 113.9 15.3 17.4 38.8 88.5 9.1 23.6 Change Period (Y+Rc), s 5.0 5.0 5.0 4.5 5.0 5.0 5.0 * 5 Max Green Setting (Gmax), s 25.0 67.5 16.0 32.0 9.0 83.5 5.5 * 43 Max Q Clear Time (g_c+ll ), s 8.0 26.8 9.7 8.7 2.0 61.8 2.0 17.5 Green Ext Time (p-c), s 0.4 15.6 0.2 0.5 0.1 15.1 0.0 1.1 Intersection Summary HCM 6th Ctrl Delay 42.6 _ HCM 6th LOS D Notes * HCM 6th computational engine requires equal clearance times for the phases crossing the barrier. Base 2018 TMC 5:00 pm 01/02/2018 2018 Counts on Base Network - Costco Gas Synchro 10 Report PW - SL Existing Conditions HCM 6th TWSC 4: Shopping Center Internal Road & Costco Gas Driveway 11/20/2019 Intersection Int Delay, s/veh 8 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations *' r 1� Traffic Vol, veh/h 73 26 166 31 6 23 153 60 15 23 109 108 Future Vol, veh/h 73 26 166 31 6 23 153 60 15 23 109 108 Conflicting Peds, #/hr 0 0 2 2 0 0 1 0 2 2 0 1 Sign Control Stop Stop Stop Stop Stop Stop Free Free Free Free Free Free RT Channelized - - None - - None - - None - - None Storage Length - - 0 - - - 0 - - Veh in Median Storage, # - 0 - - 0 - - 0 - 0 - Grade, % - 0 - - 0 - - 0 - - 0 - Peak Hour Factor 92 92 92 92 92 92 92 92 92 92 92 92 Heavy Vehicles, % 0 0 1 0 0 0 1 0 0 0 0 1 MvmtFlow 79 28 180 34 7 25 166 65 16 25 118 117 Nlajorr'Minor M1nc7r2 Minorl Maorl Major2 Conflicting Flow All 649 643 180 740 693 75 236 0 0 83 0 0 Stage 1 228 228 - 407 407 - - - - - - - Stage 2 421 415 - 333 286 - - - - Critical Hdwy 7.1 6.5 6.21 7.1 6.5 6.2 4.11 - 4.1 - Critical Hdwy Stg 1 6.1 5.5 - 6.1 5.5 - - - - Critical Hdwy Stg 2 6.1 5.5 - 6.1 5.5 - - - - - Follow-up Hdwy 3.5 4 3.309 3.5 4 3.3 2.209 - 2.2 Pot Cap-1 Maneuver 386 394 865 335 369 992 1337 1527 - Stage 1 779 719 - 625 601 - - - - Stage 2 614 596 - 685 679 - - - - Platoon blocked, % Mov Cap-1 Maneuver 330 338 863 221 316 990 1336 1524 Mov Cap-2 Maneuver 330 338 - 221 316 - - - Stage l 682 705 - 546 525 - - Stage 2 518 521 - 509 665 - - Approach EB WB NG_ HCM Control Delay, s 14.3 18.6 _ 5A _ _ _SB _ 0.7 HCM LOS B C Minor Lane/Major Mvmt NSL NBT NBR EBLn1 ESLn2W3Ln1 SBL SBT SBR Capacity (veh/h) 1336 ` - 332 863 329 1524 - - ^� _ HCM Lane V/C Ratio 0.124 - 0.324 0.209 0.198 0.016 - - HCM Control Delay (s) 8.1 - - 21 10.3 18.6 7.4 0 HCM Lane LOS A - C B C A A HCM 95th %tile Q(veh) 0.4 - 1.4 0.8 0.7 0.1 - Base 2018 TMC 5:00 pm 01/02/2018 2018 Counts on Base Network - Costco Gas Synchro 10 Report PW - SL Proposed Conditions 1.0 PROJECT OVERVIEW The proposed Costco Fuel Expansion is located at 35100 Enchanted Parkway South, within a portion of Section 21, Township 21 North, Range 4 East, Willamette Meridian, City of Federal Way, King County, Washington. Please see Figure 2, Vicinity Map, for a graphical depiction of the exact site location. The site (a.k.a, subject property) consists of two (2) parcels (APN: 219260-0290-00 and 21926- 00180-03), 12.50 acres in total. The proposed development will be limited to approximately 0.36 acres of disturbed area on the subject property. The entire property is currently developed with asphalt paving, parking, landscaping, and an existing Costco Warehouse and Fuel Facility. The Fuel Facility and Warehouse reside on different parcels. The site generally slopes downward from the east property boundary towards the west of the site and contains slopes ranging from 5 to 10 percent. The majority of the developed site is covered in asphalt pavement. Existing conditions are further described in Section 4.0 Part A — Existing Site Hydrology. The project proposes to expand the existing Fuel Facility to the north with four (4) new island dispensers. The site is currently developed with a full range of utilities on site. The project Proposes to route runoff the existing flow devices, and provide water quality treatment BMPs to meet the treatment criteria set forth in the 2016 King County Surface Water Design Manual (KCSWDM) and the 2017 Federal Way Addendum to the KCSWDM. The project site consists of one existing Threshold Discharge Area (TDA) and the improvements trigger a full drainage review. An analysis of the minimum requirements for the TDA has been provided in Section 2.0 of this report. The proposed Costco Fuel Facility Expansion will be constructed in the southwest portion of the site. The proposed expansion will be designed to match existing paving grades and drainage design as closely as possible. Proposed conditions are further described in Section 4.0 Part B — Developed Site Hydrology. Enhanced Basic Water Quality is required for the entire subject property, per the 2017 Federal Way Addendum to the KCSWDM. Modular Wetland units will be installed at several key areas across the site in order to provide enhanced treatment for the 12.5 acre site. Flow control BMPs are required for the target surface areas of the Fuel Facility improvements. Based on the existing site constraints, we have determined Flow Control BMPs to be infeasible for this project. Infeasibility criteria is further discussed in Section 4.0 — D. 6076.024. docx HCM 6th TWSC 1: S 352 St & Shopping Center Internal Road 11/20/2019 Intersection Int Delay, s/veh 7.8 Movement I WEBT - BT C6R Lane Configurations 1� 1� 41� 4 � Traffic Vol, veh/h 205 166 98 0 200 6 45 2 3 3 6 289 Future Vol, veh/h 205 166 98 0 200 6 45 2 3 3 6 289 Conflicting Peds, #/hr 2 0 5 5 0 2 0 0 0 0 0 0 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - - None - - None - - None - - None Storage Length 50 - - 0 - - - 50 Veh in Median Storage, # - 0 - - 0 - - 0 - - 0 - Grade, % - 0 - - -11 - - 0 - - 0 - Peak Hour Factor 95 95 95 95 95 95 95 95 95 95 95 95 Heavy Vehicles, % 1 2 1 0 3 0 0 0 0 33 0 1 Mvmt Flow 216 175 103 0 211 6 47 2 3 3 6 304 majoriminor Majorl Major2 t riorl Mintirr Conflicting Flow All 219 0 0 283 0 0 1033 883 232 877 931 216 Stage - - - - - 664 664 - 216 216 - Stage 2 - - - - 369 219 - 661 715 - Critical Hdwy 4.11 - - 4.1 - 7.1 6.5 6.2 7.43 6.5 6.21 Critical Hdwy Stg 1 - - - 6.1 5.5 - 6.43 5.5 - Critical Hdwy Stg 2 - - - - - 6.1 5.5 - 6.43 5.5 - Follow-up Hdwy 2.209 - - 2.2 - - 3.5 4 3.3 3.797 4 3.309 Pot Cap-1 Maneuver 1356 - - 1291 - - 213 287 812 238 269 826 Stage 1 - - - 453 461 - 721 728 - Stage 2 - - - - 655 726 - 404 438 - Platoon blocked, % Mov Cap-1 Maneuver 1353 1285 - 115 239 808 206 224 824 Mov Cap-2 Maneuver - - 115 239 - 206 224 - Stage 1 - - - 379 385 - 605 727 - Stage 2 - 410 725 - 336 366 - Approach W_B NB SB _ HCM Control Delay, s _EB 3.6 0 53.9 _ 12.2 _ HCM LOS F B Minor Lane/Major Wait NBLnI EBL a W8L WBT 'NB: SBLn1 w3BLn2 Capacity (veh/h) 124 1353 - - 1285 - 218 824 HCM Lane V/C Ratio 0.424 0.159 - - - 0.043 0.369 HCM Control Delay (s) 53.9 8.2 - - 0 - - 22.3 11.9 HCM Lane LOS F A A - C B HCM 95th %tile Q(veh) 1.8 0.6 0 - 0-1 1.7 Base 2018 TMC 5:00 pm 01/02/2018 2018 Counts on Base Network - Costco Gas Synchro 10 Report PW - SL Existing Conditions HCM 6th TWSC 4: Shopping Center Internal Road & Costco Gas Driveway 11/20/2019 Intersection Int Delay, s/veh Movement 7.5 EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations *' F 01� Traffic Vol, veh/h 66 23 154 32 5 23 138 60 15 23 112 97 Future Vol, veh/h 66 23 154 32 5 23 138 60 15 23 112 97 Conflicting Peds, Whr 0 0 2 2 0 0 1 0 2 2 0 1 Sign Control Stop Stop Stop Stop Stop Stop Free Free Free Free Free Free RT Channelized - - None - - None - - None - - None Storage Length - - 0 - - - - - - - - Veh in Median Storage, # - 0 - - 0 - - 0 - 0 - Grade, % - 0 - - 0 - - 0 - 0 Peak Hour Factor 92 92 92 92 92 92 92 92 92 92 92 92 Heavy Vehicles, % 0 0 1 0 0 0 1 0 0 0 0 1 Mvmt Flow 72 25 167 35 5 25 150 65 16 25 122 105 Ma'orWinor tmrr MIDrl Ma'or2 Conflicting Flow All 614 609 178 698 653 75 228 0 0 83 0 0 Stage 1 226 226 - 375 375 - - - - - - Stage 2 388 383 - 323 278 - - - - Critical Hdwy 7.1 6.5 6.21 7.1 6.5 6.2 4.11 - - 4.1 - Critical Hdwy Stg 1 6.1 5.5 - 6.1 5.5 - - - - - - Critical Hdwy Stg 2 6.1 5.5 - 6.1 5.5 - - - - - - Follow-up Hdwy 3.5 4 3.309 3.5 4 3.3 2.209 - - 2.2 Pot Cap-1 Maneuver 407 412 868 358 389 992 1346 - - 1527 - Stage 1 781 721 - 650 621 - - - - - - Stage 2 640 616 - 693 684 - - - - - Platoon blocked, % - Mov Cap-1 Maneuver 351 356 866 245 336 990 1345 - _ 1524 - Mov Cap-2 Maneuver 351 356 - 245 336 - - - Stage 1 689 707 - 573 547 - - - - Stage 2 545 543 - 528 670 - - - Approach EB WB NB SB HCM Control Delay, s 13.5 17.4 5.2 0.7 HCM LOS B C Minor LanOP.9a'or Mvml NBL NBT NBR EBLn1 EBLn2WBLn1 SBL SBT SBR Capacity (veh/h) 1345 - 352 866 356 1524 - HCM Lane V/C Ratio 0.112 - 0.275 0.193 0.183 0.016 - HCM Control Delay (s) 8 0 19.1 10.2 17.4 7.4 0 HCM Lane LOS A A C B C A A HCM 95th %tile Q(veh) 0.4 - 1.1 0.7 0.7 0.1 - Base 2018 TMC 5:00 pm 01/02/2018 2018 Counts on Base Network - Costco Gas Synchro 10 Report PW - SL Existing Conditions HCM 6th Signalized Intersection Summary 5050: Enchanted Pkwy S & S 352 St --0. --* 1- 4--- *-- 1I11/20/2019 i Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations + r t r 0 tt r Traffic Volume (veh/h) 35 68 61 204 118 229 94 873 200 216 1345 91 Future Volume (veh/h) 35 68 61 204 118 229 94 873 200 216 1345 91 Initial Q (Qb), veh 0 0 0 0 0 0 0 0 0 0 0 0 Ped-Bike Adj(A_pbT) 1.00 0.98 0.99 0.99 1.00 0.99 1.00 0.99 Parking Bus, Adj 1.00 1.00 0.99 1.00 1.00 0.99 1.00 1.00 1.00 1.00 1.00 1.00 Work Zone On Approach No No No No Adj Sat Flow, veh/h/In 1805 1894 1850 2333 2318 2303 1841 1870 1870 1879 1835 1850 Adj Flow Rate, veh/h 38 73 66 219 127 246 101 939 215 232 1446 98 Peak Hour Factor 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 Percent Heavy Veh, % 6 0 3 0 1 2 4 2 2 1 4 3 Cap, veh/h 137 141 114 235 259 214 454 1948 445 394 1819 813 Arrive On Green 0.02 0.07 0.07 0.06 0.11 0.11 0.21 0.68 0.67 0.02 0.17 0.17 Sat Flow, veh/h 1719 1894 1530 2222 2318 1915 1753 2869 656 1790 3486 1557 Grp Volume(v), veh/h 38 73 66 219 127 246 101 581 573 232 1446 98 Grp Sat Flow(s),veh/h/In 1719 1894 1530 2222 2318 1915 1753 1777 1748 1790 1743 1557 Q Serve(g_s), s 0.0 5.9 6.7 8.2 8.2 15.7 0.0 25.0 25.2 6.0 63.6 8.5 Cycle Q Clear(g_c), s 0.0 5.9 6.7 8.2 8.2 15.7 0.0 25.0 25.2 6.0 63.6 8.5 Prop In Lane 1.00 1.00 1.00 1.00 1.00 0.38 1.00 1.00 Lane Grp Cap(c), veh/h 137 141 114 235 259 214 454 1206 1187 394 1819 813 V/C Ratio(X) 0.28 0.52 0.58 0.93 0.49 1.15 0.22 0.48 0.48 0.59 0.79 0.12 Avail Cap(c_a), veh/h 152 367 296 311 601 497 454 1206 1187 580 1819 813 HCM Platoon Ratio 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 0.33 0.33 0.33 Upstream Filter(I) 0.98 0.98 0.98 1.00 1.00 1.00 1.00 1.00 1.00 0.39 0.39 0.39 Uniform Delay (d), s/veh 70.5 71.3 71.6 71.9 66.8 54.7 45.9 12.2 12.4 10.9 58.0 35.2 Incr Delay (d2), s/veh 0.4 1.1 1.7 25.9 0.5 72.3 0.1 1.4 1.4 0.2 1.5 0.1 Initial Q Delay(d3),s/veh 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 %ile BackOfQ(95%),veh/In 2.7 5.3 4.9 16.1 8.6 18.7 5.8 15.1 15.0 4.0 35.9 5.5 Unsig. Movement Delay, s/veh LnGrp Delay(d),s/veh 70.9 72.3 73.3 97.8 67.3 127.0 46.0 13.6 13.8 11.1 59.5 35.3 LnGrp LOS E E E F E F D B B B E D Approach Vol, veh/h 177 592 1255 1776 Approach Delay, s/veh 72.4 103.4 16.3 51.8 Approach LOS E F B D Timer - Assigned Phs 1 2 3 4 5 6 7 8 Phs Duration (G+Y+Rc), s 13.4 113.7 15.5 17.4 38.6 88.5 9.1 23.9 Change Period (Y+Rc), s 5.0 5.0 5.0 4.5 5.0 5.0 5.0 * 5 Max Green Setting (Gmax), s 25.0 67.5 16.0 32.0 9.0 83.5 5.5 * 43 Max Q Clear Time (g_c+ll ), s 8.0 27.2 10.2 8.7 2.0 65.6 2.0 17.7 Green Ext Time (p-c), s 0.4 15.6 0.2 0.5 0.1 13.0 0.0 1.2 Intersection Summary HCM 6th Ctrl Delay 49.1 HCM 6th LOS D Notes * HCM 6th computational engine requires equal clearance times for the phases crossing the barrier. Base 2018 TMC 5:00 pm 01/02/2018 2018 Counts on Base Network - Costco Gas Synchro 10 Report PW - SL Proposed Conditions HCM 6th TWSC 1: S 352 St & Shopping Center Internal Road 11/20/2019 Intareartinn Int Delay, slveh 8.2 Movement EBL EBT EBR WBL WBT ;rd6R NBL NBT rASR 5BL SBT 5BR Lane Configurations 1� 1� 41� r Traffic Vol, vehlh 220 166 98 0 200 6 45 2 3 0 0 306 Future Vol, veh/h 220 166 98 0 200 6 45 2 3 0 0 306 Conflicting Peds, #/hr 2 0 5 5 0 2 0 0 0 0 0 0 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - - None - - None - - None - - None Storage Length 50 - - 0 - - - - - - - - Veh in Median Storage, # - 0 - - 0 - - 0 - - 0 - Grade, % - 0 - - -11 - - 0 - - 0 - Peak Hour Factor 95 95 95 95 95 95 95 95 95 95 95 95 Heavy Vehicles, % 1 2 1 0 3 0 0 0 0 33 0 1 Mvmt Flow 232 175 103 0 211 6 47 2 3 0 0 322 Ma or/Mi.nor Ma or1 Ma or2 Minorl thnor2 Conflicting Flow All 219 0 0 283 0 0 1071 915 232 216 Stage 1 - - - - - - 696 696 - - - Stage 2 - - - 375 219 - - Critical Hdwy 4.11 - 4.1 7.1 6.5 6.2 - 6.21 Critical Hdwy Stg 1 - - 6.1 5.5 - - Critical Hdwy Stg 2 - - - 6.1 5.5 - - - - Follow-up Hdwy 2.209 - 2.2 3.5 4 3.3 - - 3.309 Pot Cap-1 Maneuver 1356 - 1291 200 275 812 0 0 826 Stage 1 - - - 435 446 - 0 0 - Stage 2 - - - - 650 726 - 0 0 - Platoon blocked, % Mov Cap-1 Maneuver 1353 1285 105 226 808 - - 824 Mov Cap-2 Maneuver - - - 105 226 - Stage 1 - - 359 368 - - Stage 2 - 396 725 - - Approach EB WB NB SB _ HCM Control Delay, s _ 3.7 _ 0 62 12.1 HCM LOS F B Minor Lane/Major Mvmt NBLn1 EBL EBT EBR WBL WBT WBR SBLn1 Capacity (vehlh) 113 1353 1285 - - 824 HCM Lane V/C Ratio 0.466 0.171 - - - - 0.391 HCM Control Delay (s) 62 8.2 - 0 - 12.1 HCM Lane LOS F A - - A - B HCM 95th %tile Q(veh) 2.1 0.6 - - 0 - 1.9 Base 2018 TMC 5:00 pm 01/02/2018 2018 Counts on Base Network - Costco Gas Synchro 10 Report PW - SL Proposed Conditions ►JCL EINF-EL DER Bright People. Right Solutions. October 16, 2018 Kleinfelder Project No.: 20192016.001A Mrs. Kim Katz Director of Real Estate Development Costco Wholesale 999 Lake Drive Issaquah, WA 98027 Subject: Geotechnical Engineering Report Proposed Gas Expansion Costco Wholesale Warehouse No. 61 35100 Enchanted Parkway South Federal Way, Washington 98003 CW# 18-0442 Dear Mrs. Katz: This letter transmits one electronic copy (portable document format) of our geotechnical engineering report for the proposed gas expansion project at Costco Wholesale Warehouse No. 61 located at 35100 Enchanted Parkway S in Federal Way, Washington. We appreciate the opportunity to provide geotechnical services to you on this project. Please contact the undersigned at (425) 636-7900 if you have any questions regarding this report, or if we can provide assistance with other aspects of the project. Sincerely, KLEINFELDER wcv� (�X� Marcus B. Byers, P.E., P.Eng Principal Geotechnical Engineer Senior Project Manager Attachment: October 16, 2018 Geotechnical Engineering Report RECEIVED APR 16 2019 CITY OF FEDERAI. WAY COMMUNITY DEVELOPMENT 20192016.001A/SEA18R85790 Page 1 of 1 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KLEINFELDER 14710 NE 87th Street, Suite 100, Redmond, WA 98052 p l 425.636.7900 f 1425.636.7901 ("KL EINFEL DEFT Bright People. Right Solutions. GEOTECHNICAL ENGINEERING REPORT PROPOSED GAS EXPANSION COSTCO WHOLESALE WAREHOUSE NO. 061 35100 ENCHANTED PKWY SOUTH FEDERAL WAY, WASHINGTON KLEINFELDER PROJECT NO. 20192016.001A OCTOBER 16, 2018 Copyright 2018 Kleinfelder All Rights Reserved NT OR tTS DESIGNATED REPRESENTATIVES MAY USE THIS DOCUMENT AND ONLY FOR THE SPECIFIC PROJECT FOR WHICH THIS REPORT WAS PREPARED. y 20192016.001AISEA18R85710 O 2018 Kleinfelder Page i of iv October 16, 2018 www.kleinfelder.com .ram KL EINFE4OER Bright Poople. Night Solutiom A Report Prepared for: Costco Wholesale 999 Lake Drive Issaquah, WA 98027 GEOTECHNICAL ENGINEERING REPORT PROPOSED GAS EXPANSION COSTCO WHOLESALE WAREHOUSE NO. 61 35100 ENCHANTED PARKWAY SOUTH FEDERAL WAY, WASHINGTON KLEINFELDER PROJECT # 20192016.001A Prepared by: � �SATY�A 10-16-18 Ranjan Satyamurthy, Ph.D., PE., PMP Project Manager II Marcus B. Byers, PE, P.Eng Principal Geotechnical Engineer Senior Project Manager KLEINFELDER, INC. 14710 NE 87th Street, Suite 100 Redmond, WA 98052 Phone:425.636.7900 Fax: 425.636.7901 October 16, 2018 Kleinfelder Project No.: 20192016.001 A 20192016.001A/SEA18R85710 Page ii of iv October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com 1<L EINFEL DER Bright People Right Solutions TABLE OF CONTENTS Section Page EXECUTIVESUMMARY ............................................................................................................1 1 INTRODUCTION AND SCOPE.......................................................................................2 1.1 GENERAL............................................................................................................2 1.2 PROJECT DESCRIPTION...................................................................................2 1.3 SCOPE OF SERVICES.......................................................................................2 2 SITE EXPLORATION AND LABORATORY TESTING...................................................5 2.1 SITE EXPLORATION..........................................................................................5 2.2 LABORATORY TESTS........................................................................................5 3 SITE CONDITIONS.........................................................................................................6 3.1 SURFACE CONDITIONS....................................................................................6 3.2 GENERAL GEOLOGIC CONDITIONS.................................................................6 3.3 PRIOR EXPLORATIONS.....................................................................................6 3.4 SOIL CONDITIONS.............................................................................................6 3.5 GROUNDWATER CONDITIONS.........................................................................7 4 DESIGN RECOMMENDATIONS.....................................................................................9 4.1 SEISMIC DESIGN RECOMMENDATIONS..........................................................9 4.1.1 2015 IBC Seismic Design Criteria.............................................................9 4.2 FOUNDATION SUPPORT................................................................................10 4.2.1 General..................................................................................................10 4.2.2 Shallow Foundation Recommendations.................................................11 4.2.3 Drilled Pier Foundation Recommendations.............................................11 4.3 PAVEMENTS.....................................................................................................13 4.3.1 Costco Pavement Design Parameters....................................................13 4.3.2 Asphalt Concrete Pavement...................................................................13 4.3.3 Asphalt Performance Grade Binder........................................................14 4.3.4 Portland Cement Concrete Pavement ................................................... A 4 4.3.5 Aggregate Base......................................................................................15 4.3.6 Pavement Maintenance..........................................................................15 4.4 STORMWATER INFILTRATION........................................................................15 5 CONSTRUCTION RECOMMENDATIONS....................................................................16 5.1 GENERAL..........................................................................................................16 5.2 EARTHWORK.. ................................................................................................. 16 5.2.1 Excavation..............................................................................................16 5.2.2 Oversize Material ............................................. ................................16 5.2.3 Site Preparation and Pavement Subgrade..............................................16 5.2.4 Foundation Subgrade.............................................................................17 5.2.5 Weather Considerations.........................................................................17 5.3 FILL MATERIAL AND COMPACTION CRITERIA..............................................18 5.4 UTILITY TRENCHES AND EXCAVATIONS......................................................19 6 ADDITIONAL SERVICES.............................................................................................20 7 LIMITATIONS...............................................................................................................21 20192016.001A/SEA18R85710 Page iii of iv October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KL EINFEL OER Bright Prople. Right Salud- 8 REFERENCES..............................................................................................................24 TABLES 1 Recommended Flexible Pavement Sections 2 Recommended Minimum Asphalt Concrete Pavement Sections 3 Recommended Rigid Pavement Sections FIGURES 1 Vicinity Map 2 Site and Exploration Map APPENDICES A Field Exploration B Geotechnical Laboratory Testing C 1999 Kleinfelder Geotechnical Study 20192016.001 A/SEA1 8R8571 0 Page iv of iv October 16, 2018 © 2018 Kleinfelder www,kieinfelder.corri r� KL EINF EL OER Bright People Fight Saluthm APPENDIX A FIELD EXPLORATION 20192016.001A/SEA18R85710 October 16, 2018 © 2018 Kleinfelder www.kleinfeldef.com KL EINFEL DER Bright People Bight Solutions. PROPOSED GAS EXPANSION COSTCO WHOLESALE WAREHOUSE NO. 061 35100 ENCHANTED PKWY S FEDERAL WAY, WASHINGTON EXECUTIVE SUMMARY This report presents the results of Kleinfelder's geotechnical engineering study for the proposed gas expansion project at Costco Wholesale Warehouse No. 061 located at 35100 Enchanted Parkway South in Federal Way, Washington. The expansion includes the addition of four new fuel islands, a canopy addition, and a new controller enclosure. Site soils generally consist of medium dense to very dense fill and native glacial till. Perched groundwater is anticipated at depths of about 12 to 20 feet seasonally, thought could potentially be shallower during the wet season. Based on the results of our field exploration and existing subsurface data, laboratory testing, and geotechnical analyses, the proposed additions may be supported on a shallow spread footings. Drilled piers, which we understand are often preferable for gas expansion projects due to a small disturbance footprint, are also suitable. However, the presence of dense to very dense glacial soils that contain cobbles and boulders may affect drilled pier installation. We do not recommend stormwater infiltration due to the dense / compact nature and high fines content of the onsite soils. 20192016.001A/SEA18R85710 Page 1 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com �1 fCLE IvFELOER Bright People Night Solutiam 1 INTRODUCTION AND SCOPE 1.1 GENERAL This report presents the results of Kleinfelder's geotechnical engineering study for design and construction of the proposed expansion at Costco Wholesale Warehouse No. 61 in Federal Way, Washington. The site is located at 35100 Enchanted Parkway South, as shown on the Vicinity Map, Figure 1. Kleinfelder completed a geotechnical study for the original gas station development in 1999. While we have relied on prior explorations and information presented in our 1999 study, this report supersedes our prior study and should be referenced first for design and construction recommendations. 1.2 PROJECT DESCRIPTION Our understanding of the project is based on conversations with and information provided by Ms. Megan Palmer of Barghausen Consulting Engineers, Inc. (Barghausen) via email on August 20, 2018. Based on Site Plan DD-2 dated June 22, 2018, we understand the expansion includes addition of four new fuel islands, a canopy extension, and relocation of a controller structure. In addition, we understand three landscape areas are being evaluated for stormwater infiltration. Refer to the Site and Exploration Map, Figure 2, for a site plan and locations of the borings. 1.3 SCOPE OF SERVICES The scope of our geotechnical study consisted of a literature review, subsurface explorations, engineering evaluation and analysis, and preparation of this report. A description of our scope of services performed for the geotechnical portion of the project follows. Task 1: Background Data Review We reviewed the following information in developing our understanding of the propose project and site conditions: Existing Site Plan drawing EX11 dated September 30, 2014 prepared by MG2; 20192016.001A/SEA18R85710 Page 2 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KL EI NFEG. DER Bright People. Right Solutions. • As -Built Grading Plan Sheet C6 dated January 7, 2002, prepared by Barghausen ; • Geotechnical Investigation Costco Gasoline Retail Facility Warehouse #61, 35100 Enchanted Parkway South Federal Way, Washington prepared by Kleinfelder, dated December 10, 1999; ■ Phase I Environmental Site Assessment Proposed Costco Gasoline Station, 35100 Enchanted Parkway South Federal Way, Washington prepared by Kleinfelder, dated December 1, 1999; • Revised Geotechnical Engineering Report, Grease Interceptor, Costco Warehouse No. 061, 35100 Enchanted Parkway, Federal Way, Washington 98003 prepared by Kleinfelder, dated February 14, 2014; • Costco Wholesale Development Requirements (CWDRs), Version 2016, dated September 19, 2016; and, ■ Readily -available aerial imagery for the site vicinity. Task 2: GPR Survey and Field Exploration Prior to commencement of the fieldwork, we notified the One -Call Utility Locate Service and subcontracted a private utility locate service to identify potential conflicts with subsurface structures. In addition, we subcontracted a Ground Penetrating Radar (GPR) survey to aid Barghausen in developing a map of existing utilities and fuel dispenser piping. A Barghausen representative documented conditions reported by the GPR subcontractor. Our 1999 geotechnical study included six borings. However, none were located in the area of the planned fuel island addition or the proposed infiltration areas. Therefore, we advanced five borings for this study. Boring B-1 was located in the area of the planned fuel island and canopy addition and four borings, designated B-2, MW-3, B-4, and B-5, were located within the potential infiltration areas. Exploration depths ranged from about 2.5 to 26.5 feet below existing grade. Borings were completed on September 7, 2018 and advanced using a rubber track -mounted drill rig. Additional site explorations details are provided in Section 2.1 and Figure 2 presents a site plan showing exploration locations. 20192016.001A/SEA18RB5710 Page 3 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinielder.com KL EINFEt OER Bright People. Right Solutions Task 3: Geotechnical Analyses We evaluated field and laboratory data from our 1999 geotechnical study, as well as our current study, along with site grades, layout, and anticipated structural loads to develop geotechnical recommendations for project design and construction. We evaluated feasible foundation systems, including constructability and compatibility constraints, pavements, and earthwork. Task 4: Geotechnical Report This report summarizes our geotechnical study including field exploration, laboratory testing, and our findings, conclusions, and geotechnical recommendations for project design and construction. Our report includes the following items: An Executive Summary; ■ Site Vicinity Map (Figure 1) and Site and Exploration Map (Figure 2); • Boring logs (Appendix A); Laboratory test results (Appendix B); ■ A discussion of general site conditions; • A discussion of subsurface conditions as encountered in our borings, including the depth to groundwater; Recommendations for seismic design parameters in accordance with the 2015 International Building Code (IBC); • Recommendations for shallow spread footing and drilled shaft foundation design, including minimum embedment depths, axial and lateral capacity, and settlement estimates; A discussion of infiltration conditions; • Recommendations for site preparation, earthwork, temporary slope inclinations, fill placement, and compaction specifications, including the excavation characteristics of subsurface soil deposits; and, • Pavement design recommendations. 20192016.001A/SEA181385710 Page 4 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KL EINFEL. OER Bright People Bight SOludom 2 SITE EXPLORATION AND LABORATORY TESTING 2.1 SITE EXPLORATION The site exploration program was performed on September 7, 2018, under full-time observation of a Kleinfelder geologist and consisted of advancing five borings. Boring B-1 was located in the area of the planned fuel island and canopy addition and four borings, designated B-2, MW-3, B-4, and B-5, were located within the potential infiltration areas. A 2-inch diameter standpipe piezometer was installed in MW-3 to monitor groundwater levels. Holocene Drilling, operating under subcontract to Kleinfelder, advanced borings to depths of about 21.5 to 26.5 feet below the existing ground surface using a rubber track -mounted drill rig equipped with hollow -stem augers. Boring B-2 was abandoned at a depth of about 2.5 feet upon encountering what was interpreted to be a concrete slab. Boring B-4 was abandoned at a depth of about 4 feet after meeting refusal on an apparent cobble or boulder. The exploration locations presented on Figure 2 were estimated in the field by measuring distances from existing site features and should be considered approximate. Appendix A presents the borings logs. Logs of the borings completed by Kleinfelder in 1999 are presented with our 1999 geotechnical study in Appendix C. 2.2 LABORATORY TESTS Laboratory tests were performed on selected soil samples in general accordance with ASTM standards to establish index and engineering properties of the site soils. Tests included natural moisture content, sieve analyses, and percent fines. Laboratory test results are presented on the boring logs in Appendix A and / or on laboratory test reports included in Appendix B. 20192016.001A/SEA18R85710 Page 5 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com ECL EINFEL OER BrightPeople Bight5olufiom 3 SITE CONDITIONS 3.1 SURFACE CONDITIONS The gas station expansion is located in the southwest corner of the Costco site, immediately northeast of the intersection of Enchanted Parkway South and South 352nd Street. The site is currently paved with concrete pavement around the fuel island canopy and asphalt around the surrounding drive aisles and parking spaces. A rockery retaining wall up to about 6 feet high supports portions of the south and west side of the gas station that are higher than the adjacent roads. 3.2 GENERAL GEOLOGIC CONDITIONS General geological information for the project area was obtained from the online Geologic Map of Washington (fortress.wa.gov/dnr/geology). The Geologic Map of Washington indicates surficial soils in the area consist of glacial till. Glacial till generally consists of a dense to very dense matrix of clay, silt, sand, and gravel. 3.3 PRIOR EXPLORATIONS Kleinfelder completed six borings in the vicinity of the gas station as part of our 1999 geotechnical study to support original facility development. Two borings (B-5 and 6) were completed in the UST area and four borings (B-1 through 4) were completed in the fuel island and canopy area, though the canopy layout was rotated after our exploration program. The prior borings encountered fill, alluvium, and glacial till soils. The fill were interpreted as being derived from on -site soils during earlier site grading. Groundwater was observed at depths ranging from 12 to 20 feet. Refer to Appendix C for logs of prior borings. 3.4 SOIL CONDITIONS Conditions encountered in our borings are similar to those described in our 1999 geotechnical study and the referenced geologic map. Our explorations encountered fill, presumably placed during the original site development, and underlying the fill, glacial till and interglacial deposits, 20192016.001A/SEA18R85710 Page 6 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com �CLEINFELOER Bright Pt ple. Night Solutions which were identified as alluvium in the 1999 geotechnical study. Soils encountered are described in the order encountered and grouped into engineering units as follows: • Asphalt: Hot mix asphalt pavement was encountered in boring B-1. The asphalt was approximately two inches thick and underlain by an approximate six to 12-inch thick layer of base course material. • Top Soil: Approximately four inches of sod and topsoil were encountered in borings B-2, MW-3, B-4 and B-5, which were located in landscape areas. Fill: A medium dense to very dense fill layer interpreted to consist of on -site soils placed during prior site development was encountered and extended to depths ranging from approximately 1.5 to 7.5 feet. The fill layer consisted primarily of silty sand with gravel and SPT blow counts ranged from 18 to more than 50 blows per foot. • Glacial Till: Glacial till, including weathered till, was observed underlying the upper fill in borings B-1, MW-3, and B-5 primarily consisted of dense to very dense sands with various amounts of silt and / or gravel and apparent cobbles and / or boulders. SPT blow counts ranged from 26 to more than 50 blows per foot, with an average of about 43 blows per foot. • interglacial or Interglacial Fluvial Deposits: Interglacial or Interglacial Fluvial Deposits were observed between layers of glacial till in borings MW-3 and B-5. These deposits primarily consisted of medium dense to very dense sands with various amounts of silt and / or gravel. SPT blow counts ranged between five and 20 blows per foot with an average of about 14 blows per foot. These interglacial or interglacial fluvial deposits were not readily visually discernable from the glacial till soils based on composition, but generally had lower blow counts. These deposits were identified as alluvium in our 1999 geotechnical study. 3.5 GROUNDWATER CONDITIONS Groundwater was not observed during or immediately after drilling and the piezometer installed in Boring MW-3 on September 7, 2018, did not indicate the presence of groundwater immediately after drilling. These explorations, which were completed at the end of summer, likely represent the driest conditions to occur seasonally. Our 1999 geotechnical study encountered seepage at depths ranging from about 12 to 20 feet and perched groundwater is anticipated to develop seasonally, particularly overlying the glacial till soils, and may be shallower. 20192016.001A/SEA18R85710 Page 7 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KL EINFEL DER It should be noted that fluctuations in groundwater level could occur because of variations in rainfall, pumping from wells, utility trench locations and depths, and other factors that were not evident at the time of our investigation. If significant variations in groundwater levels are encountered during construction, it may be necessary for Kleinfelder to review our recommendations presented herein and adjust them as necessary. 20192016.001 A/SEA1 8R8571 0 Page 8 of 24 October 16, 2018 © 2018 Kleinfelder www-kleinfelder. com iCL EINFEL DEi7 Enfil Move A ght 3n'Ah �r 4 DESIGN RECOMMENDATIONS Based on the results of our review of prior reports for the site, field explorations, laboratory testing, and engineering analyses conducted during this study, it is our professional opinion that the proposed project is geotechnically feasible, provided the recommendations presented in this report are incorporated into the project design and construction. Our recommendations regarding the geotechnical aspects of design and construction of the project are presented in the following sections. 4.1 SEISMIC DESIGN RECOMMENDATIONS 4.1.1 2015 IBC Seismic Design Criteria Seismic design parameters were developed in accordance with the requirements of the 2015 edition of the International Building Code (IBC) and ASCE 7-10. Based on information obtained from the filed explorations, published geologic literature and maps, the Site Class is D, Stiff Soil, according to Section 1613.3.2 of 2015 IBC and Table 20.3-1 of ASCE 7-10. Approximate coordinates for the site are noted below. • Latitude: 47.28625°N • Longitude: 122.31313°W The Risk -Targeted Maximum Considered Earthquake (MCER) mapped spectral accelerations for 0.2 seconds and 1 second periods (Ss and S1) were estimated using Section 1613.3 of the 2015 IBC and the U.S. Geological Survey (USGS) web -based application (available at http://geohazards.usgs.gov/designmaps/us/application.php). The mapped acceleration values and associated soil amplification factors (Fa and Fv) based on the 2015 IBC and corresponding site modified spectral accelerations (SMS and SM1) and design spectral accelerations (SDS and SD1) are presented in Table 1. According to Section 1803.5.12 of the 2015 IBC, in the absence of a site -specific ground motion hazard analysis, the MCE geometric mean peak ground acceleration adjusted for Site Class effects (PGAm) can be determined based on Equation 11.8-1 in Section 11.8.3 of ASCE 7-10. 20192016.001A/SEA18R85710 Page 9 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KLEINFEL OER Bright ikople flight Solutions 4.2 Table 1 Recommended Flexible Pavement Sections Design Parameter Symbol Recommended Value Site Class D Mapped spectral acceleration SS (g) 1.280 for short periods Mapped spectral acceleration S, (g) 0.492 for a 1-second period Site Coefficient Fa 1.000 Site Coefficient Fv 1.508 MCE spectral response acceleration SMs (g) 1.280 for short periods MCE(1) spectral response acceleration SM, (9) 0.742 at 1-second period Design spectral response acceleration Sos (9) 0.853 (5% damped) at short periods Design spectral response acceleration Sol (g) 0.495 (5% damped) at 1-second period MCE Peak Ground Acceleration PGAM (g) 0.500 (SM at T=0) FOUNDATION SUPPORT 4.2.1 General Based on the results of our field exploration and existing subsurface data, laboratory testing, and geotechnical analyses, the proposed additions may be supported on a shallow spread footings. Drilled piers, which we understand are often preferable for gas expansion projects due to a small disturbance footprint, are also suitable. However, the presence of dense to very dense glacial soils that contain cobbles and boulders may affect drilled pier installation. 20192016.001A/SEA18R85710 Page 10 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com fCLEINFELOER Bright Prople Right Solutions 4.2.2 Shallow Foundation Recommendations The canopy and may be supported directly on properly prepared existing structural fill or native soils. All footings should be founded at least 24 inches below the lowest adjacent finished exterior grade to provide frost protection. Footings may be sized for an allowable bearing pressure of 3,000 psf. A one-third increase may be used for transient wind or seismic loading conditions. Uplift loads on the canopy may be resisted by the weight of footing and overlying soil. We estimate that static settlement of foundations bearing on properly prepared subgrade will be on the order of '/2 inch, or less. Lateral loads can be resisted by an ultimate passive pressure against buried portions of the footings equal to that generated by a fluid with an equivalent unit weight of 360 pcf in the structural footing backfill. Sliding resistance between subgrade soils and footings cast on subgrade can be evaluated using an ultimate coefficient of friction of 0.5. These values should include minimum factors of safety of 2 and 1.5 for evaluating allowable passive and sliding resistance, respectively. 4.2.3 Drilled Pier Foundation Recommendations Construction Considerations The proposed canopy may be supported on drilled piles, also known as cast -in -drilled hole (CIDH) piles, designed and constructed as recommended in this report. The performance and capacities of drilled piers can be influenced significantly by the selected construction methods and procedures used. Construction methods that create large zones of disturbance around the drilled piers can lead to lower than expected skin friction due to excessive stress relief around the pier length. The recommendations presented herein assume the contractor maintains stable excavation sidewalls at all times during construction, up through the completion of concrete placement. Drilling of piers should be accomplished using conventional heavy-duty drilling equipment designed for drilling in dense glacial till soils. Note that dense to very dense glacial till with potential cobbles and / or boulders was encountered. Difficult drilling conditions should be anticipated, along with potential for sloughing sand and perched groundwater layers. Cobble and boulders may cause drill refusal, or may roll into the excavation, making progress difficult. We recommend a minimum pier diameter of 42 inches for the purpose of aiding in cobble and boulder removal. 20192016.001A/SEA18R85710 Page 11 of 24 October 16, 2018 © 2018 Kleinfelder www.kiainfelder.com KL EINFEL DER Bright People Right Solutiom Polymer slurry or temporary steel casing may be required to stabilize the sides of the excavation. Concrete for the piers should be placed immediately after the drilling of the hole is complete. The concrete should be pumped to the bottom using a tremie. Once concrete pumping is initiated, a minimum head of 5 feet of concrete above the bottom of the tremie should be established and maintained throughout the concrete placement to prevent contamination of the concrete by soil inclusions. If steel casing is used, the casing should be removed as the concrete is placed, but the casing should remain at least 2 feet below the level of the concrete. Drilled Pile Foundations Design Considerations We have developed design recommendations based on an assumed 42-inch-diameter piers with a minimum length of 15 feet and a maximum length of 25 feet. Kleinfelder should be notified if a different pier diameter or length will be used. Due to the relatively low vertical loads, we anticipate that lateral loads will control shaft length. Recommendations for the design drilled pier foundations are presented below. Axial and Lateral Capacity The downward axial capacity of drilled piers will be derived from skin friction and end bearing. The skin friction may be estimated based on an allowable uniform capacity of 125 pounds per square foot (psf). The end bearing may be estimated based on an allowable bearing pressure of 8,000 psf. The uplift capacity may be taken as one-half the downward allowable axial skin friction capacity. A one-third increase in the allowable capacities may be used for wind or seismic loads. Settlement of the proposed canopy supported on drilled piles, as recommended, is estimated to be less than'/z inch. For computing the lateral resistance, we recommend that an allowable lateral soil bearing pressure of 220 psf per foot of depth below grade, applied over the width of the pier. The allowable lateral soil bearing pressure should not exceed 2,500 psf. Since drilled piers are anticipated to behave as short, rigid piles, the allowable lateral soil bearing pressure may be increased by a factor of 2 for short-term lateral loads provided the structure will not be adversely affected by '/z inch of movement at the ground surface. 20192016.001A/SEA18R85710 Page 12 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KLEINFEL DER Bright People Right Solutions 4.3 PAVEMENTS The following recommended pavement sections are based on the soil conditions encountered during our field exploration, our assumptions regarding interim grading and final site grades, limited laboratory testing, and Costco Wholesale Development Requirements (2016). 4.3.1 Costco Pavement Design Parameters We developed pavement design recommendations using traffic loading parameters provided in the Costco Wholesale Development Requirements and the following test data: ■ A 20-year pavement design life; • Light -duty pavements subject to 6,600 passenger vehicle trips per year (Traffic Index of 5.0); ■ Heavy-duty pavements subject to 30 tractor -trailer truck tips per day (Traffic Index of 7.0); ■ For asphalt concrete pavements: a design CBR-value of 10 or greater; and ■ For Portland Cement Concrete (PCC) Pavements: a 28-day flexural strength (modulus of rupture determined by the third -point method) of at least 650 pounds per square inch (psi); a modulus of subgrade reaction (k value) of 250 pounds per cubic inch (pci); and interlock at the control joints. 4.3.2 Asphalt Concrete Pavement We designed asphalt concrete pavement, also referred to as Hot Mix Asphalt (HMA), in accordance with the Asphalt Institute Manual Series (MS-1), Asphalt Pavements for Highways and Streets. HMA should conform to requirements of the Costco Wholesale Asphalt Pavement and Surfacing Specification Section 321216. Pavement lifts should not exceed three inches. Table 2 presents recommended minimum HMA pavement sections. Prior to placement of aggregate base, pavement subgrade should be prepared in accordance with Section 5.2.3. 20192016.001A/SEA18R85710 Page 13 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com ICLEINFEL OER Bight People Right Solutions. Table 2 Recommended Minimum Asphalt Concrete Pavement Sections Traffic Use Traffic Index, TI Asphalt Concrete Aggregate Base (inches) (inches) Light -Duty Pavement 5.0 3.0 4.0 Heavy Duty Pavement 7.0 4.0 6.0 4.3.3 Asphalt Performance Grade Binder Performance Grade (PG) Binder of 58-16 may be used for the project. Binder selection was performed in accordance with Costco Wholesale Specifications Section 321216. Air temperature data for the three data stations nearest the project site was averaged and the PG was selected using the FHWA program LTTPBind Version 3.1. The high -end temperature rating was selected as having 98 percent reliability binder and the low -end temperature was selected to provide a reliability of at least 90 percent. 4.3.4 Portland Cement Concrete Pavement We designed PCC pavement in accordance with the Portland Cement Association (PCA) Thickness Design for Concrete Pavements (PCA, 1984). The design assumes that the PCC will have a 28-day flexural strength (modulus of rupture determined by the third -point method) of at least 650 pounds per square inch (psi). A design modulus of subgrade reaction (k value) of 250 pounds per cubic inch (pci) was assumed for the top of the compacted aggregate base. It was also assumed that aggregate interlock would be developed at the control joints. The pavement sections are based on a theoretical design life of 20 years. The recommended minimum PCC section is presented in Table 3 prior to placement of aggregate base, pavement subgrade should be prepared in accordance with Section 5.2.3. Table 3 Recommended Minimum PCC Pavement Section Traffic Use Traffic Index, TI PCC (inches) Aggregate Base (inches) Heavy Duty Pavement 7.0 7 6 20192016.001A1SEA18R85710 Page 14 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com `KLE1NFEL0ER &Vhr tupr 194hT WPuF n u We recommend that PCC pavements be reinforced with a welded wire or an approved equivalent. The structural engineer should perform final reinforcement design. Longitudinal and transverse joint spacing should not exceed 12 feet and 15 feet, respectively. Joint details should conform to PCA guidelines. Expansion joints in concrete slabs should be sealed with petroleum resistant sealant to prevent minor releases from impacting subsurface soil. Concrete should consist of Type HS. 4.3.5 Aggregate Base Crushed surfacing should conform to the requirements of Section 9-03.9(3) Crushed Surfacing Top Course or Base Course of the WSDOT Standard Specifications and be compacted to a minimum of 95 percent relative compaction per ASTM D1557. 4.3.6 Pavement Maintenance Pavements, particularly in cold regions, undergo seasonal movement due to changes in temperature and subgrade moisture content. This movement tends to accelerate pavement deterioration, particularly at cold joints. As cold joints open and localized areas of cracking develop, surface water infiltrates into the pavement section, exacerbating freeze -thaw action and softening subgrade. A crack sealing program should be performed annually to slow pavement deterioration. Any areas where surface water stands on the surface should be remediated. Over time as cracking becomes more pronounced, a slurry seal coat should be applied. 4.4 STORMWATER INFILTRATION We understand stormwater infiltration is being considered for the grass areas east of the existing gas station. Soils in this area consist of a compacted layer of fill and / or glacial till (hardpan) and a majority of the soils have fines contents in excess of 30 percent. Our 1999 geotechnical study noted that groundwater was perched on these layers. As a result, we do not believe that a facility can be constructed with more than 3 feet of separation between the wet season groundwater table. Furthermore, infiltration rates in the site soils, even when unsaturated, will be severely restricted by their dense / compact nature and high fines content. Therefore, we do not recommend stormwater to infiltration. 20192016.001A/SEA18R85710 Page 15 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com r� KL EINFEL DER Bnght People Bight Solutions 5 CONSTRUCTION RECOMMENDATIONS 5.1 GENERAL The following recommendations should be used by the contractor for construction of the project. 5.2 EARTHWORK Site preparation and earthwork operations should be performed in accordance with applicable codes, safety regulations and other local, province or federal specifications, and the recommendations included in this report. References to maximum dry unit weights are established in accordance with the latest version of ASTM Standard Test Method D1557 (modified Proctor). The earthwork operations should be observed and tested by a representative of geotechnical engineer. 5.2.1 Excavation Excavations will likely encounter some fill and dense glacial till soils with cobbles and boulders. Excavation of the on -site soils can generally be performed with conventional earthmoving equipment such as dozers and excavators, though large equipment, fresh ripping teeth, and / or narrow buckets may be required. In some areas, wet sands and perched groundwater may be encountered. These soils will tend to slough. 5.2.2 Oversize Material Oversized materials, such as construction debris, which may consist of pieces of concrete and / or rocks / cobbles should be anticipated in the fill materials. The contractor should consider this oversize material when selecting construction equipment and any oversize material larger than 3 inches in diameter should be removed and disposed of off -site. 5.2.3 Site Preparation and Pavement Subgrade Abandoned utilities, existing pavements, foundations, and other existing improvements within the proposed gas station areas should be removed and the excavation(s) backfilled with engineered 20192016.001A/SEA18R85710 Page 16 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com ECLEINFELOER 1169" ]o '10's.wti— fill. Debris produced by demolition operations, including wood, steel, piping, plastics, etc., should be separated and disposed of off -site. Existing utility pipelines or conduits that extend beyond the limits of the proposed construction and are to be abandoned in place, should be plugged with non -shrinking cement grout to prevent migration of soil and/or water. Demolition, disposal and grading operations should be observed and tested by a representative of Kleinfelder. Areas to receive fill should be stripped of all dry, loose and / or soft earth materials and unsuitable fill materials to the satisfaction of a representative of Kleinfelder. After the area has been stripped of soft earth materials and debris, the upper 12 inches of subgrade should be moisture conditioned and compacted to at least 95 percent of the modified Proctor maximum dry density. Following compaction, the exposed subgrade should be proof -rolled with heavy construction equipment (e.g. loader or smooth -drum roller) to disclose areas of soft and yielding material. Where soft and yielding material is observed, it should be over -excavated and replaced with granular structural fill. Area that are excessively soft or yielding may require use of a separation geotextile between the subgrade and structural fill. 5.2.4 Foundation Subgrade Footing subgrade soils should be evaluated by a Kleinfelder representative following excavation to footing subgrade elevation. Probing, and/or potholing should be performed with the assistance of the contractor. It should be assumed that all footing subgrade will require compaction with an excavator -mounted vibratory hoepack. The contractor should submit samples of earthwork materials proposed for use during construction to the geotechnical engineer for evaluation and approval prior to use. Samples should be submitted at least one week prior to their use to allow the contractor to identify alternative sources if the material proves unsatisfactory. Structural fill should be moisture conditioned to within 2 percent of the optimum moisture content prior to compaction and should be placed in maximum 12-inch thick lifts. All structural fill should be compacted to a dense and unyielding condition and to a minimum of 95 percent of the modified Proctor maximum dry density as determined per ASTM D1557. 5.2.5 Weather Considerations We recommend that earthwork be performed during dry periods of weather to the greatest extent practical. During wet weather, the contractor should take measures to protect the exposed 20192016.001A/SEA18R85710 Page 17 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KL EINFEL OER Bright People Bight Solutiom subgrade and limit construction traffic on the exposed subgrade. These measures could include, but are not limited to, placing a layer of crushed rock on exposed subgrade or covering the exposed subgrade with a plastic tarp. During construction, the site should be graded so that surface water can drain readily away. Ponding of water in or near excavations should be avoided. Promptly pump out or otherwise remove water that accumulates in excavations or on subgrades, and allow these areas to dry out before resuming construction. Use berms, ditches, and similar means to prevent stormwater from entering work areas and to convey it off -site efficiently. Grading fill, structural fill, or other fill should not be placed on frosted or frozen ground, nor should frozen material be placed as fill. Frozen ground should be allowed to thaw or be completely removed prior to placement of fill. If earthwork is performed during the winter months when freezing is a factor, a good practice is to cover the compacted fill with a "blanket" of loose fill each evening to help prevent the compacted fill from freezing. Prior to commencement of fill placement operations the next morning, the loose fill blanket should be entirely removed and allowed to thaw before incorporating it into the fill. 5.3 FILL MATERIAL AND COMPACTION CRITERIA Material placed below structures or pavements should be considered structural fill. Structural fill should consist of well -graded granular material free of organics or other deleterious material and have a maximum particle size of three inches. Imported fill should conform to aggregate base or select sub -base requirements of Section 9-03.14(1) Gravel Borrow of the latest WSDOT Standard Specifications. Material that will be exposed to precipitation, or placed and compacted in wet weather should have the additional requirement that the fines content, material passing the US No. 200 sieve, be limited to 5 percent by weight based on the percentage passing the % inch sieve. The contractor should submit samples of earthwork materials proposed for use during construction to the geotechnical engineer for evaluation and approval prior to use. Samples should be submitted at least one week prior to their use to allow the contractor to identify alternative sources if the material proves unsatisfactory. Structural fill should be moisture conditioned to within 2 percent of the optimum moisture content prior to compaction and should be placed in maximum 8-inch thick lifts. All structural fill should 20192016.001A/SEA18R85710 Page 18 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KL EINFEL DER Bright People. flight Solutiom I---' be compacted to a dense and unyielding condition and to at least 95 percent of the modified Proctor maximum dry density as established per ASTM D1557. 5.4 UTILITY TRENCHES AND EXCAVATIONS The contractor should be responsible for the safety of personnel working in utility trenches. We recommend all utility trenches and excavations are supported in accordance with state and federal safety regulations. Trench and excavation back -fill should be placed and compacted as described in Section 5.3. Pipe bedding material should conform to the manufacturers' recommendations. Particular care should be taken to make sure bedding or fill material is properly compacted in place to provide adequate support to the pipe. Jetting or flooding is not a substitute for mechanical compaction and should not be allowed. 20192016.001A/SEA18R85710 Page 19 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KL- EINFEL OER Bright People. Right Solutions 6 ADDITIONAL SERVICES The recommendations made in this report are based on the assumption that an adequate program of tests and observations will be made during construction to observe and document compliance with these recommendations. Testing and observations performed during construction should include, but not necessarily be limited to, the following: Observations and testing during site preparation, earthwork, structural fill, and pavement section placement; Footing subgrade / drilled pier observation; Testing and inspection of concrete and structural steel; and • Consultation as may be required during construction. We further recommend that project plans and specifications be reviewed by us to evaluate compatibility with our conclusions and recommendations. 20192016.001A/SEA18R85710 Page 20 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com l fCL.E1NFELOER Bright People Right Solutiom. 7 LIMITATIONS This geotechnical study has been prepared for the exclusive use of Costco Wholesale and their agents for specific application to the proposed Costco Wholesale gas expansion in Federal Way, Washington. The findings, conclusions and recommendations presented in this report were prepared in accordance with generally accepted geotechnical engineering practice. No other warranty, express or implied, is made. The scope of services was limited to a background data review and the field exploration described in Section 2. It should be recognized that definition and evaluation of subsurface conditions are difficult. Judgments leading to conclusions and recommendations are generally made with incomplete knowledge of the subsurface conditions present due to the limitations of data from field studies. The conclusions of this assessment are based on our field exploration and laboratory testing programs, and engineering analyses. Kleinfelder offers various levels of investigative and engineering services to suit the varying needs of different clients. Although risk can never be eliminated, more detailed and extensive studies yield more information, which may help understand and manage the level of risk. Since detailed study and analysis involves greater expense, our clients participate in determining levels of service, which provide information for their purposes at acceptable levels of risk. The client and key members of the design team should discuss the issues covered in this report with Kleinfelder, so that the issues are understood and applied in a manner consistent with the owner's budget, tolerance of risk and expectations for future performance and maintenance. Recommendations contained in this report are based on our field observations and subsurface explorations, limited laboratory tests, and our present knowledge of the proposed construction. It is possible that soil or groundwater conditions could vary between or beyond the points explored. If soil or groundwater conditions are encountered during construction that differ from those described herein, the client is responsible for ensuring that Kleinfelder is notified immediately so that we may reevaluate the recommendations of this report. If the scope of the proposed construction, including the estimated Traffic Index or locations of the improvements, changes from that described in this report, the conclusions and recommendations contained in this report are not considered valid until the changes are reviewed, and the conclusions of this report are modified or approved in writing, by Kleinfelder. 20192016.001A/SEA18R85710 Page 21 of 24 October 16, 2018 © 2018 Kleinfelder wwwAleinf Id r.com f LEINFEL OER Bright People Night Solut/om. The scope of services for this subsurface exploration and geotechnical report did not include environmental assessments or evaluations regarding the presence or absence of wetlands or hazardous substances in the soil, surface water, or groundwater at this site. Kleinfelder cannot be responsible for interpretation by others of this report or the conditions encountered in the field. Kleinfelder must be retained so that all geotechnical aspects of construction will be monitored on a full-time basis by a representative from Kleinfelder, including site preparation, preparation of foundations, and placement of engineered fill and trench backfill. These services provide Kleinfelder the opportunity to observe the actual soil and groundwater conditions encountered during construction and to evaluate the applicability of the recommendations presented in this report to the site conditions. If Kleinfelder is not retained to provide these services, we will cease to be the engineer of record for this project and will assume no responsibility for any potential claim during or after construction on this project. If changed site conditions affect the recommendations presented herein, Kleinfelder must also be retained to perform a supplemental evaluation and to issue a revision to our original report. This report, and any future addenda or reports regarding this site, may be made available to bidders to supply them with only the data contained in the report regarding subsurface conditions and laboratory test results at the point and time noted. Bidders may not rely on interpretations, opinion, recommendations, or conclusions contained in the report. Because of the limited nature of any subsurface study, the contractor may encounter conditions during construction which differ from those presented in this report. In such event, the contractor should promptly notify the owner so that Kleinfelder's geotechnical engineer can be contacted to confirm those conditions. We recommend the contractor describe the nature and extent of the differing conditions in writing and that the construction contract include provisions for dealing with differing conditions. Contingency funds should be reserved for potential problems during earthwork and foundation construction. This report may be used only by the client and only for the purposes stated, within a reasonable time from its issuance, but in no event later than one year from the date of the report. Land use, site conditions (both on site and off site) or other factors may change over time, and additional work may be required with the passage of time. Any party, other than the client who wishes to use this report shall notify Kleinfelder of such intended use. Based on the intended use of this report and the nature of the new project, Kleinfelder may require that additional work be performed and that an updated report be issued. Non-compliance with any of these requirements by the client or anyone else will release Kleinfelder from any liability resulting from the use of this report 20192016.001A/SEA18R85710 Page 22 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com ___I\ KL EINFEL DER BAght People. Bight SokMom by any unauthorized party and the client agrees to defend, indemnify, and hold harmless Kleinfelder from any claims or liability associated with such unauthorized use or non-compliance. 20192016.001A/SEA18R85710 Page 23 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KLE1NFEL DER Bright PeWe. Right Sok tiom 8 REFERENCES American Concrete Institute (ACI), 2011, Building Code Requirements for Structural Concrete (ACI 318-11) and Commentary. Costco Wholesale, 2016, Costco Wholesale Development Requirements, Version 2016, dated September 19, 2016 Portland Cement Association, 1988, Design and Control of Concrete Mixtures, Portland Cement Association, Skokie, Illinois. 20192016.001A/SEA18R85710 Page 24 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.c¢m FIGURES 20192016.001A/SEA18R85710 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com L C C _J , ti wafnwrr kperrenter CK `rD jack5on > ` Hewitt Tax Service w Reed L,ielt i Ino dr sudo kn Frderal _.. S 348th St S 348th St = 1i 14 5e+�trle f Ch3dren's ' I South + r � Clrnfc �� ; Olive Garden f SITE Costro Food Co wt t, \ f , castcID f 1 r� a S 352nd St � �! r The information included on this graphic representation has been compiled from a variety of sources and is subject to change without notice. Klelnfelder makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of such information This document is not intended for use as a land survey product nor is it designed or intended as a construction design document The use or misuse of the information contained on this graphic representation is at the sole risk of the Parry using w misusufg the information PROJECT NO. 20192016 VICINITY MAP FIGURE DRAWN BY: BRC KL EINFEL DER CHECKED BY: MBB 1 COSTCO FUEL FACILITY EXPANSION Bright People. RightSOiUtionS. DATE: 9/25/2018 35100 ENCHANTED PARKWAY S REVISED: FEDERAL WAY, WASHINGTON 98003 PAGE: 1 of 1 1 O to' I N =I N N LL O Q J M ca a x .0 m a m The information included on this graphic representation has been complied from a variety of sources and is J subject to change without notice Klelnfelder makes no representations or warranties, express or Implied, as to amuracy, completeness, timeliness, or rights to the use or such information. This document is not intended for use as a land survey product our is it designed or intended as a construction design document The use or misuse of the information contained on this graphic representation is at the sole risk or the party Jusing or misusing the information. I IQ 1 l� '^1r/ 4f F p 1 1 1 f I r I { r p E I I �+F I' I (1999) �4 % B-4 t (2018) I B-2 � B-1 I (1999) (1999) SOUTH 352ND STREET LEGEND BORING LOCATION (2018) MONITORING WELL LOCATION (2018) BORING LOCATION (1999) O B-4 ; (1999) 1 E 1 1 Z 1 1 i 1 r I p ! I ! E I E 1 [ p 3 ! { I p t 1 F-P R4PM I 1 I I I It B-2 I cuaory i EXpk151tR1 I I i i (2018) w D Y t F III Y I f j MW-3 0 i B-1 0 (2018) is i ; (2018) I 1 I I F li 0 PROJECT NO. 20192016 000, DRAWN BY BRC FCL EINFEL L7E�4 CHECKED BY MBB Bright People. Right Solutions. DATE: 9/25/2018 REVISED: SITE AND EXPLORATION MAP COSTCO FUEL FACILITY EXPANSION 35100 ENCHANTED PARKWAYS FEDERAL WAY, WASHINGTON 98003 FIGURE 2 PAGE: 1 Of 1 I �l }Y} ■J W J r— � Y m� �m Z J Z � F- r U W o 0 a a m Z Z ( 0 z o z N U) I U) y F Y W Date Begin - End: 9/07/2018 Drilling Company: Holocene BORING LOG B-2 Logged By: WS Lewis Drill Crew: K.Doyle Hor: Vert. Datum: Not Available Drilling Equipment: Diedrich D-50 Hammer Type - Drop: 140 lb. Auto - 30 in. Plunge: -90 degrees Drilling Method: Hollow Stem Auger Weather: Partly ctoudy Exploration Diameter: 8 in. O.D. FIELD EXPLORATION LABORATORY RESULTS > o 011� o Surface Condition: Grass a > a $ o d c o N _ D y c a W m ~ v Of � xt E c my U o ? am m > Z U)C 'C S CMJ .2 Z N W oc a d z U) E, m Z' N N Q f0 d "O E Lithologic Description 0 c9 U) o ama s �? U) 0 3 U o a- a te a? ¢ W- TOPSOIL: 4" v� v Encountered concrete slab CONCRETE: concrete slab * adjacent to vault in planter The boring was terminated at approximately 2.5 ft. GROUNDWATER LEVEL INFORMATION: below ground surface. The boring was backfilled Groundwater was not observed during drilling or after with auger cuttings on September 07, 2018. completion. 5 10 15 20 25 30 PROJECTNO.: 20192016 BORING LOG B-2 BORING \ DRAWN BY: TC (��KL EINFEL DER CHECKED BY: RS B-2 COSTCO FUEL FACILITY EXPANSION Bright People. Right Solutions. DATE: 9/12/2018 35100 ENCHANTED PARKWAYS FEDERAL WAY, WASHINGTON 98003 REVISED: - PAGE: 1 of 1 Date Begin - End: 9/07/2018 Drilling Company: Holocene BORING LOG B-4 Logged By: WS Lewis Drill Crew: KDoyle Hor.-Vert. Datum: Not Available Drilling Equipment: Diedrich D-50 Hammer Type -Drop: 140 Ib. Auto - 30 in. Plunge: -90 degrees _ Drilling Method: Hollow Stem Auger Weather: Party Exploration Diameter: 8 in. O.D. FIELD EXPLORATION LABORATORY RESULTS .•-. o X.0 y o) Surface Cond t+on: Grass 0) T i� a o o a o N N N E f0 N H m H m3: m m Z0 �t E �d m m _ L U L a A o o U « OI J U o 'N Z C Y -,o- f0 N a u t m oc o o 61Zl N rn j. C o �' m N N m Q l6 a a N 0 c7 Lithologic Description rn ®a a F of? v) � U 0 a- 0- J d? ¢ TOPSOIL: 4" Fill: Rig chatter Silty SAND with Gravel (SM): gray SILT with Organics (ML): brown, moist, stiff BC=7 Refusal on apparent cobble or . Glacial Till: 50/5" 6oeider SlIty SAND with Gravel (SM): gray, moist, very dense 5 GROUNDWATER LEVEL iAlFQRMATIQN: Groundwater was not observed during drilling or after The boring was wrminated at appro)dmately4 ft. completion. below ground surface. The baring was backfilled with auger cuttings on September 07, 2018. 1 00 PROJECTNO.: 20992078 BORING LOG B-4 BORING DRAWN BY: TC (4'KLEINF-EL JOE CHECKED BY: RS B_4 COSTCD FUEL FACILITY EXPANSION �` Bright People. Right Solutions. ' DATE: 9/12/2018 35100 ENCHANTED PARKWAY S FEDERAL WAY, WASHINGTON 98003 REVISED: PAGE: 1 of 1 71 ul z J N LL Date Begin - End: 9/07/2018 Drilling Company: Holocene BORING LOG 5-5 Logged By: WS Lewis Drill Crew: K.Doyle Hor.-Vert. Datum: Not Available Drilling Equipment: Diedrich D-50 Hammer Type - Drop: 140 lb. Auto - 30 in. Plunge: -90 degrees Drilling Method: Hollow Stem Auger Weather: Partly cloudy Exploration Diameter: 8 in. O.D. FIELD EXPLORATION LABORATORY RESULTS o U w Surface Condition: Grass a F ii a)e N c a H N m H o a>> O 2 E w O En C`U O (a�a Q E m > Z E C w O Z ya E a) o W Z Cl) C5 O v el o (0 a M a Cr � a Z N ¢ x Lithologic Description Cc v TOPSOIL: 4" Fill- Rig chatter SILT with organics (ML): non -plastic, brown, moist, stiff BC=5 Glacial Till: 25 Silty SAND with Gravel (SM): sub -rounded, light 25 gray, moist, very dense P=1.5 BC=6 5— SM 68 32 NP NP 10 16 Rig chatter BC=16 50/6" pounding on cobbles 10 Interglacial Fluvial_Deposfts BC=10 Silty SAND with Gravel (SM): fine to SM 81 43 NP NP coarse -grained, sub -rounded, gray, moist, medium 8 6 dense BC=11 10 A. 10 15 SILT with Sand (ML): fine-grained, gray, moist, BCC brown organics 2 3 P=1.5 BC=15 becomes very stiff 13 15 P=1.0 Glacial Till: , SAND with Silt and Gravel (SP-SM): fine to 20 medium -grained, gray, moist, medium dense BC=18 Piece of cobble stuck in becomes very dense 43 sampler shoe The boring was terminated at approximately 21.5 ft. GROUNDWATER LEVEL INFORMATION: below ground surface. The boring was backl'illed Groundwater was not observed during drilling or after with auger cuttings and bentonite on September 07, completion. 2018, 25 30 PROJECT NO. 20192016 BORING LOG B-5 BORING DRAWN BY: TC KL EINFEL DER CHECKED BY: RS B-5 COSTCO FUEL FACILITY EXPANSION Bright People. Right Solutions. DATE: 9/12/2018 35100 ENCHANTED PARKWAYS FEDERAL WAY, WASHINGTON 98003 � REVISED: - PAGE: 1 of 1 C, a N LL E Y C�1 iii LU F- Y Q u � J W LL F- z z � c m Date Begin - End: 9/07/2018 Drilling Company: _Holocene BORING LOG MW-3 Logged By: WS Lewis Drill Crew: K.Doyle Hor.-Vert. Datum: Not Available Drilling Equipment: Diedrich D-50 Hammer Type - Drop: 140 lb. Auto - 30 in. Plunge: -90 degrees Drilling Method: Hollow Stem Auger Weather: Partly cloudy Exploration Diameter: 8 in. O.D. FIELD EXPLORATION m Surface Condition: Grass w fQ U L a a � o cD Lithologic Description TOPSOIL: 4" Fill: Silty SAND with Gravel (SPSM): light brown Glacial Till: Silty SAND with Gravel (SM): fine to medium -grained, sub -rounded, gray, moist, medium dense, fine gravel 5 Becomes fine and very dense LABORATORY RESULTS Z o �,c a ki _ 0 U a o g O II am¢" 0 _ 2 E c ? 0.~ O O O C 'C E-C) J 'V Z C m U� V E m N U)co u) 11 ma [ri 0.'L 12 Elf (� L) ❑ d 1 _ J d Z Flush -mount cover BC=6 12 15 BC=9 2" SCH 40 Solid 38 384F PVC IZser very gravelly G3" imemlacial Deposits 20/40 Sand to- 0 Silty GRAVEL or Sand (GM): medium dense BC=12 — Pack 8 12 611 SAND with Silt and Gravel (SP-SM): sub -rounded, p light brown, moist, loose BC 5 _ 4 - 15 Becomes medium dense BC=6 W$ 88 11 NP NP = Slotted 0010 7 — PVC Screen Glacial Till: Silty SAND with Gravel (SPSM): fine to medium -grained, sub -rounded, light gray, moist, very dense, fine to coarse gravel The boring was terminated at approximately 21.5 ft. below ground surface. The boring was backfilled with sand and pipe on September 07, 2018. 50/1" BC=35 5013" GROUNDWATER LEVEL INFORMATION: Groundwater was not observed during drilling or after completion. PROJECT NO.: 20192016 BORING LOG MW-3 BORING rKL DRAWN BY: TC EINF-EL DER CHECKED BY: RS MW-3 COSTCO FUEL FACILITY EXPANSION - Bright People. Right Solutions. DATE: 9/12/2018 35100 ENCHANTED PARKWAYS FEDERAL WAY, WASHINGTON 98003 REVISED: PAGE: 1 of 1 KL EINFEL OCR Bright Maple Right 501u60m APPENDIX B GEOTECHNICAL LABORATORY TESTING 20192016.001A/SEA18R85710 October 16, 2018 ©2018 Kleinfelder 4vww.kleinfeider.eom 100 95 90 85 80 75 70 2 65 w 60 m 55 w 50 Z F_ 45 Z U 40 0-1 a 35 30 25 20 15 10 5 m c GRAVEL SAND 'o COBBLE SILT CLAY coarse fine coarse medium fine m U.S. SIEVE OPENING IN INCHES I U.S. SIEVE NUMBERS I HYDROMETER 12 6 4 3 2 1.5 1 3/4 1/2 3/8 3 4 6 810 1416 20 30 40 50 60 100140200 100 10 1 0.1 0.01 0.001 GRAIN SIZE IN MILLIMETERS Ex Ioration,ID _ _ Depth (ft.) Sample Description ILL PL PI B-1 20 SILTY SAND with GRAVEL (SM) NP NP NP m B-5 5 SILTY SAND with GRAVEL ISM) NP NP NP B-5 10 SILTY SAND with GRAVEL (SM) NP NP NP X MW-3 15 WELL -GRADED SAND with SILT (SW-SM) NP NP NP pth (ft.) Dim D�, D� D10 Cc Cu Passing assmg ssmg °/milt %Clay B-1 20 4.75 1.995 0.173 NM NM NM 69 22 NM NM m B-5 5 4.75 1.732 NM NM NM NM 68 32 NM NM B-5 10 4.75 0.285 NM NM NM NM 81 43 NM NM X MW-3 15 4.75 0.482 0.242 NM 1 1.99 7.89 88 11 NM NM Coefficients of Uniformity- C� = D. / D10 Coefficients of Curvature - Cc = (D30)2 / D60 D10 Sieve Analysis and Hydrometer Analysis testing performed in general accordance D60 = Grain diameter at 60% passing with ASTM D422. D30 = Grain diameter at 30% passing NP = Nonplastic NM = Not Measured D10 = Grain diameter at 10% passing PROJECT NO.: 20192016 SIEVE ANALYSIS APPENDIX rKL DRAWN BY: TC EINFEL DER CHECKED BY: RS C-3 COSTCO FUEL FACILITY EXPANSION Bright People. Right Solutions, DATE: 9/12/2018 35100 ENCHANTED PARKWAYS FEDERAL WAY, WASHINGTON 98003 - REVISED: fCL E JVFEL DER Bright /4opht. Right Sah hom APPENDIX C PRIOR GEOTECHNICAL REPORT 20192016.001A/SEA18R85710 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com Geotechnical Investigation COSTCO Gasoline Retail Facility Warehouse #61 35100 Enchanted Parkway South Federal Way, Washington k'q KLEINFELDER An employee awned company k'q KLEINFELDER Geotechnical Investigation COSTCO Gasoline Retail Facility Warehouse #61 35100 Enchanted Parkway South Federal Way, Washington Prepared for: Ms. Kathy Nishihira, P.E. COSTCO Wholesale 999 Lake Drive Issaquah, WA 98027 Prepared by: Kleinfelder Inc. 2405-140th Avenue, NE Suite A101 Bellevue, Washington 98005 Telephone: (425) 562-4200 Facsimile: (425) 562-4201 J(VY1 SC�11'v1,tC��- 12/10/99 Copyright 1999 Kleinfelder, Inc. All Rights Reserved This document was prepared for use only by the client, only for the purposes stated, and within a reasonable time from issuance. Non- commercial, educational and scientific use of this report by regulatory agencies is regarded as a "fair use" and not a violation of copyright. Regulatory agencies may make additional copies of this document for internal use. Copies may also be made available to the public as required by law. The reprint must acknowledge the copyright and indicate that permission to reprint has been received. TABLE OF CONTENTS 1.0 Introduction...................................................................................................................... .............1 2.0 Planned Construction........................................................................................................................1 3.0 Field and Laboratory Investigations..................................................................................................1 4.0 Surface and Subsurface Conditions...................................................................................................2 5.0 Engineering Analysis and Recommendations....................................................................................3 General.... ....... . �..........................--- ......... ......... :........................................................... 3 SitePaving and Grading...................................................................................................................3 Excavatabit ity.................................................................................................................................... 4 Temporary Excavation Stability ........................................................................................................4 Structural Fill and Compaction........................................................................................................4 Foundations...................................................................................................................................... 5 Asphalt Concrete Pavement Section Design and Construction.........................................................5 Portland Cement Pavement Section Design and Construction.........................................................7 SoilCorrosion...................................................................................................................................8 6.0 Limitations---...................................................................... ..........................----..............I.—. ... ...8 7.0 Additional Services...........................................................................................................................9 8.0 Closure..........................................................................................................................................10 APPENDICES Appendix A: Figure A-1: Vicinity Map Figure A-2: Site Plan Figure A-3: Boring Log B-1 Figure A-4: Boring Log B-2 Figure A-5: Boring Log B-3 Figure A-6: Boring Lou, B-4 Fiure A-7: Bong Log B-5g Figure A-8: Boring Log B-6 Figure A-9: Soil Classification Legend Appendix B: Application for Authorization to Use 60-00187X00I/6019R 176.doc Copyright 1999 Kleinfelder, Inc. K L E I N F E L D E R 2405 140th Avenue, NE, Suite A101, Bellevue, WA 98005 (415i 562-4200 (425) 562-4201 fax Page i of i 0 Date Begin - End: 9/07/2018 Drilling Company: Holocene BORING LOG B-1 Logged By: WS Lewis Drill Crew: K.Doyle Hor: Vert. Datum: Not Available Drilling Equipment: Diedrich D-50 Hammer Type - Drop: 140 lb. Auto - 30 in. Plunge: -90 degrees Drilling Method: Hollow Stem Auger Weather: Partly cloudy Exploration Diameter: 8 in. O.D. FIELD EXPLORATION LABORATORY RESULTS OD7 Surface Condition: Pavement y 6 Fp. a p 0) .-. o a e O N N c d H 4k E w c m y L U d N a 30. C H c '0 > Z p N C y :.7 C .N m .y J a .�Z 0 (5 a) f6 oG �' O Z Cn �, O O lT m N O- �� l6 Z -p N o c7 Lithologic Description ut is a s rn U o o a s a lZ ASPHALT: 2" PAVEMENT: gravel base Fill: BC=7 Silty SAND with Gravel (SM): fine to medium -grained, sub -rounded, light gray, moist, 7 7 medium dense 5 Dark brown organics BC=7 10 12 Weathered Glacial Till: BC=7 Silty SAND with Gravel (SM): fine to 18 medium -grained, sub -rounded, gray, moist, very 30 Rig chatter dense 10 BC=50/6" Hard drilling 15 Rig chatter Weathered Glacial Till: eC 12 Silty SAND with Gravel (SM): fine to 18 coarse -grained, grayish brown, moist, dense 17 20 becomes very dense SM 69 22 NP NP Rig chatter BC=15 13 5016" refusal on apparent cobble or boulder 25 The boring was terminated at approbmately 25 ft. GROUNDWATER LEVEL INFORMATION: below ground surface. The boring was backfilled Groundwater was not observed during drilling or after with grout and patched at surface on September 07, completion. 2018. 30 PROJECTNO.: 20192016 BORING LOG B-1 BORING rKL DRAWN BY: TC EINFEL DER CHECKED BY: RS B- COSTCO FUEL FACILITY EXPANSION ` ` Bright People. Right Solutions. DATE: 9/12/2018 35100 ENCHANTED PARKWAYS FEDERAL WAY, WASHINGTON 98003 � REVISED: PAGE: 1 of 1 1.0 Introduction This report presents the results of Kleinfelder's field investigation and analysis performed at the subject site to aid in the design and construction of a proposed retail gasoline facility at the existing COSTCO Wholesale store in Federal Way, Washington, as indicated on the Vicinity Map, Figure A-1. The purpose of this study was to develop site -specific information and recommendations regarding the planned retail gasoline dispensing facility. The work performed for this investigation was authorized by Ms. Kathy Nishihira, P.E. of COSTCO Wholesale (COSTCO) and was conducted in accordance with our proposal dated November 5, 1999 and our November 24, 1999 revised proposal. 2.0 Planned Construction We discussed site development plans with Ms. Nishihira and Mr. Chris Ferko of Barghausen Consulting Engineers, Inc. (Barghausen) and reviewed plans prepared by Barghausen dated 10/15/99. We understand that the parking area west of the existing COSTCO store and south of the existing Olive Garden Restaurant will be utilized to construct a retail gasoline dispensing facility. Figure A-2 presents a proposed site plan. Planned construction for Parcel 1 was not finalized at the time this report was written. However, we understand this parcel may be used for parking and/or a single -story light structure. Planned construction for Parcel 2 includes a free standing canopy covering three service islands, a controller enclosure, and three 20,000-gallon underground gasoline storage tanks. We understand that the bottom of the tanks will be approximately 20 feet deep. We further understand that Portland cement concrete pavement is planned within the fueling station area as well as over the underground storage tanks. 3.0 Field and Laboratory Investigations Subsurface soil conditions within the planned tank and fueling station areas were investigated on November 23, 1999 by drilling six borings (designated B-1 through B-6) at the approximate locations indicated on the Site Plan, Figure A-2. Two borings were drilled to a maximum depth of about 23 feet below ground surface (bgs) in the tank area (B-1 and B-2, Parcel 2). Four additional boring were completed to depths ranging between 7 and 19 feet below ground surface (bus) in the fueling area (Parcel 2) and northern parcel (Parcel 1) of the site. (See Figure A-2 for parcel locations.) Logs of the subsurface conditions, as encountered in the borings, were 60-00187X001/6019R176.doc Page 1 of 10 Copyright 1999 Kleinfelder, Inc. K L E 1 N FELDER 2405 140th Avenue, NE, Suite Al01, Bellevue, WA 98005 (425) 562-4200 (425) 562-4201 fax recorded at the time of drilling and are presented on the boring logs, Figures A-3 through A-8. A key to soil symbols and terms is presented on Figure A-9. Drilling was accomplished with a truck -mounted, hollow -stem, auger drill rig equipped for soil sampling. Representative soil samples were obtained using a standard split -spoon sampler driven by a 140-pound hammer free -falling through a distance of 30 inches. Sampler driving resistance, expressed as "blows per the last 12 of 18 inches of penetration " is presented on the boring logs at the respective sampling depths. The samples were classified by a field geologist, and representative portions of each sample were packaged and transported to our laboratory for further analysis. 4.0 Surface and Subsurface Conditions The proposed COSTCO Wholesale Warehouse #61 Gas Station Addition site is comprised of a northern parcel (Parcel 1) and a southern parcel (Parcel 2). Parcel 1 will likely be developed for parking and/or a light structure. Parcel 2 is the planned location for the proposed retail gasoline dispensing facility. The parcels are bounded to the north by the Olive Garden Restaurant, to the west by 16" Avenue South, to the south by South 352"d Street and to the east by the continuation of the paved parking area for the Federal Way COSTCO warehouse. The southwest portion of a gravel and asphaltic concrete -paved parking lot for the Federal Way COSTCO store occupies the site. Concrete curbs and planters are located along the north and east sides of the site. These planters contain trees, small shrubs, and bark soil cover. Subsurface conditions at the project site are generally consistent between Parcels 1 and 2 and consisted of the following soil units: • Asphaltic Gravel Paving (Parcel 2) or Sod and Topsoil (Parcel 1) were encountered to approximately 0.5 foot bgs in each of the six borings. • Fill was encountered below the gravel or sod/topsoil to depths ranging from 6 to 12 bgs feet in all boring except for B-1. The fill consisted of medium dense to very dense, silty sand and silty gravel, with occasional lenses of sandy silt. The fill was probably derived from the underlying native soils at the site. • Alluvium was encountered from 12 to 19 feet bgs in Boring B-5 and 8 to 15 feet bgs in Boring B-6. The alluvium consisted of medium dense silty sand with gravel and traces of organics. A relict topsoil layer, consisting of soft silt, was identified in Boring B-5 above the alluvium from 12 to 14 feet bgs. • Till was encountered beneath the fill in Borings B-1 through B-4. The till consists of very dense gravelly silty sand with occasional cobbles and 60-00187X001/6019R176.doc Page 2 of 10 Copyright 1999 Kleinfelder, Inc. K L E I N F E L U E R 2405 140th Avenue, NE, Suite Al 01, Bellevue, WA 98005 (425) 562-4200 (425) 562-4201 fax boulders. Till likely exists beneath the alluvium in Borings B-5 and B-6, although we did not confirm this during our exploration program. • Groundwater was encountered in Boring B-2 at 16 feet bgs (seepage only) and 20 feet bgs in B-5, and B-6 at 12 feet. However, it should be noted that groundwater levels will likely rise above the current elevation during periods of increased precipitation common in late winter and spring. The boring logs presented on Figures A-3 through A-8 should be referred to for more detailed information regarding the soil and groundwater conditions encountered. 5.0 Engineering Analysis and Recommendations General Based on the results of our field and laboratory investigations and previous knowledge of the site, it is our opinion that the site is suitable for the proposed construction provided that the recommendations presented in this report are complied with. In general, structure foundations may be supported by conventional continuous or spread -type footings established on the existing scarified and compacted medium dense to very dense fill or native soils or approved structural fill. Furthermore, all Portland cement or Asphaltic concrete pavements maybe supported on the existing medium dense to very dense fill or native soils or structural fill. Specific recommendations regarding site grading, structural fill placement, excavatability and temporary slopes, foundation and pavement design are presented below. Site Paving and Grading Within areas to receive improvements, the existing asphaltic gravel or sod and topsoil should be removed to expose the underlying soils. Additional excavation should be performed to remove fine-grained soils (referred to as ML in Boring B-1) and loose fill soils. The excavated asphaltic gravel paving, granular fill and native granular soils may be stockpiled and reused as structural fill provided that the asphaltic gravel paving is thoroughly mixed with the granular fill material. Alternately, the asphaltic gravel paving can be discarded and the excavated granular fill can be stockpiled for future use. Within the controller enclosure, fueling station areas and all areas to receive pavements, the exposed soils should be scarified to a minimum depth of 8 inches. The scarified soils should then be brought to within plus or minus 2 percent of near optimum moisture content and compacted to a minimum of 90 percent of the maximum dry density as determined by ASTM- D 1557. 60-00187X001/6019R176.doc Page 3 of 10 Copyright 1999 Kleinfelder, Inc. K L E 1 N FELDER 2405 140th Avenue, NE, Suite Al 01, Bellevue, WA 98005 (425) 562-4200 (425) 562-4201 fax Excavatability Based on the borings performed in the planned tank area, we anticipate that excavations to the required depth can be achieved with conventional excavating equipment. Excavation in dense till may require special equipment such as a Caterpillar D9 with a single ripper tooth. The contractor should be prepared for excavation of soils containing cobbles and boulders. It should be noted that groundwater was encountered at depths ranging from 16 to 20 feet during our field investigation, and may be encountered at shallower depths depending on the time of year that construction begins. Temporary dewatering may be required in order to install the underground tanks. The contractor should become satisfied that the conditions to be encountered and the type of equipment and dewatering methods are best suited for these conditions. Given the groundwater conditions present and the plans to install below -grade tanks, appropriate design consideration should be given to resisting potential buoyant forces acting on the tanks when the tanks are only partially full or empty. Temporary Excavation Stability The contractor will be responsible for assuring safe working conditions within excavations. Cut or fill side slopes shall not exceed 2H:1V, unless otherwise indicated on the drawings and approved by the local building authority. Shoring should be constructed in accordance with WISHA requirements. Structural Fill and Compaction All fill placed with the project should be structural fill. Structural fill may consist of previously excavated granular fill soils including asphalt if properly pulverized and mixed as discussed previously, or granular soils meeting the following gradation criteria; Sieve Size Percent Passin 4-inch 100 (No rocks or lumps greater than 6 inches) #4 mesh 50 max #200 mesh 5-10 60-00187XOO1/6019R 176.doc Copyright 1999 Kleinfelder, Inc. Page 4 of 10 K L E 1 N F E L D E R 2405 140th Avenue, NE, Suite A101, Bellevue, WA 98005 (425) 562-4200 (4251 562-4201 fax All fill material shall be subject to approval of the geotechnical engineer. Structural fill should be placed in maximum 8-inch loose lifts and compacted to a minimum of 95 percent of the maximum dry density as determined by ASTM-D 1557. The moisture content should be near optimum at the time of compaction. UST and product line backfill shall conform to manufacturers specifications. Foundations The controller enclosure and canopy foundations may be supported directly on scarified and compacted granular fill or native soils or structural fill. The footings should be established a minimum of 24 inches below the lowest adjacent final grade for frost protection and confinement. Footings may be proportioned for a maximum net allowable bearing pressure of 3000 pounds per square foot (psf). A one third increase may be used for transient wind or seismic loads. Uplift loads on the canopy may be resisted by the weight of the footing and overlying soil or by skin friction developed along deep foundations such as drilled piers. If the client wishes to consider pier foundations, Kleinfelder can provide specific recommendations regarding the design and construction of these foundations, upon request. Total settlement of footings founded on competent soils should be on the order of one inch or less with differential settlements of 1/2 inch or less. In order to limit potential settlement, the footing excavations should be observed to verify that competent soils are exposed and that the excavations are free of loose or disturbed soils. The friction acting along the base of footings founded on granular fill soils or structural fill may be computed using a coefficient of friction of 0.30 with the normal dead load. An allowable passive lateral earth pressure may be computed by using an equivalent lateral fluid pressure of 300 pounds per cubic foot (pcf) for the side of footings poured against natural soils or properly placed and compacted backfill. The values given above may be increased by one-third for transient wind or seismic loads. Asphalt Concrete Pavement Section Design and Construction Our pavement design recommendations were developed using the American Association of State and Highway Transportation Officials (AASHTO) method for flexible pavement design. Our pavement design pertains to areas outside of the canopy area, but within the gasoline dispensing facility boundaries. Our recommended design pavement section assumes that the subgrade soil is 60-00187X00I/6019RI76.doc Page 5 of 10 Copyright 1999 Kleinfelder, Inc. K L E I N F E L D E R 2405 140th Avenue, NE, Suite A 101, Bellevue, WA 98005 (425) 562-4200 (425) 562-4201 fax firm and unyielding following proofrolling and/or has been compacted to at least 95 percent of the soil's maximum dry density, as determined by ASTM D1557 (modified Proctor). Our pavement section calculations are based on the following: • Annual maintenance such as sealing cracks in the pavement. • Design pavement life of 20 years. • Maximum anticipated traffic loading values of 500 automobiles, 5 light trucks, 3 medium weight trucks, and 3 heavy trucks per day. • Adequate drainage of surface and irrigation water to catch basins. Heavy construction traffic on asphalt pavements may exceed the design loads and could potentially damage or shorten the life of the pavements. Therefore, we recommend the contractor take appropriate measures to protect the pavement during construction. The design pavement sections should consist of a layer of crushed rock base (CRB) material placed on firm existing fill (or structural fill) and overlain by an Asphalt Concrete Pavement (ACP). The design pavement section should consist of one of the following: Minimum CRB Minimum ACP Parking and Lightly Traveled Areas 6 2 Heavy Traffic Areas 6 4 Prior to placement of pavement material, the subgrade should be evaluated by proofrolling. Yielding or unsuitable subgrade soils should be overexcavated and repaired as recommended in the Site Grading section of this report. The aggregate and asphaltic materials that should be placed and compacted in the parking and traffic areas of the site to the lines and grades shown on the plans are as follows: • Crushed Rock Base should consist of clean, free draining gravel or crushed rock meeting the requirements of Section 9-03.9(3) Crushed Surfacing, Base Course in the 1996 Edition of the State of Washington Standard Specifications for Road, Bridge, and Municipal Construction (referred here after as the Standard Specifications). • Asphalt Concrete Pavement should consist of one or more courses of plant -mixed asphalt concrete composed of asphalt and aggregate, with or without mineral filler, mixed in proportions to provide a homogeneous, stable and workable mixture. It should meet the requirements of Section 9- 03.8 Aggregates for Asphalt Concrete, for Class B materials, in the Standard Specifications. 60-00187X001/6019RI76.doc Page 6 of 10 Copyright 1999 Kleinfelder, Inc. K L E I N F E L D E R 2405 140th Avenue, NE, Suite Al 01, Bellevue, WA 98005 (425) 562-4200 (425) 562-4201 fax • Paving Asphalt should consist of AR4000OW grade asphalt meeting the requirements of Section 9-02.1(4) Paving Asphalt in the Standard Specifications. After satisfactory installation and compaction of utility trench backfills in areas to be paved, subgrade soils should be moisture conditioned and compacted to at least 95 percent of the maximum dry density so as to provide a firm, smooth, unyielding surface. After compaction, the subgrade should be kept moist to prevent it from drying out and cracking before placement of the CRB. After satisfactory completion of subgrade preparation, the CRB should be placed in a manner to prevent segregation and compacted to at least 95 percent of the maximum dry density with vibratory compaction equipment to provide tight interlock between aggregate particles. After placement and compaction of the CRB, the contractor should be responsible for the preparation of the exposed base layer surface, the placement and the compaction of an ACP course, or courses, to the lines and grades shown on the plans and described in the specifications. The ACP, its placement, and compaction should meet the requirements of Section 5-04, Asphalt Concrete Pavement of the Standard Specifications. Portland Cement Pavement Section Design and Construction Support for the Portland cement concrete (PCC) pavement may be provided by properly prepared granular fill soils or structural fill. Prior to placing pavement or base course materials, all unsuitable soils should have been excavated and the exposed soils prepared as recommended in the Site Grading section of this report. Recommendations for pavement structural sections are based upon assumed traffic loads, classification and strength characteristics of the subgrade soils and the site grading recommendations contained in this report. Given this information, we recommend the following minimum pavement sections: Location Tank Slab Pump Island Slab 60-00187x001/6019R 176.doc Copyright 1999 Kleinfelder, Inc. Material Portland Cement Concrete Pavement Aggregate Base Course Portland Cement Concrete Pavement Aggregate Base Course Thickness (in} 7.0 6.0 6.0 6.0 Page 7 of 10 K L E I N F E L D E R 2405 140th Avenue, NE, Suite A101, Bellevue, WA 98005 (425) 562-4200 (425) 562.4201 fax These pavement sections are applicable for pavements with aggregate interlock joints and edge support. The concrete should possess a minimum modulus of rupture of 650 pounds per square inch (psi) and the mix should be designed in accordance with the American Concrete Institute (ACI) manual. Reinforcement design should be performed by the structural engineer. Longitudinal and transverse joint spacing should not exceed 12 feet and 15 feet, respectively. Joint details should conform to Portland Cement Association (PCA) guidelines. Expansion joints in concrete slabs should be sealed with petroleum resistant sealant to prevent minor releases from impacting subsurface soil. Prior to aggregate base placement, the pavement area subgrade should be prepared as recommended previously. Crushed Rock Base should consist of clean, free draining gravel or crushed rock meeting the requirements of Section 9-03.9(3) Crushed Surfacing, Base Course in the 1996 Edition of the State of Washington Standard Specifications for Road, Bridge, and Municipal Construction (referred here after as the Standard Specifications). The base material should be placed in uniform loose lifts, brought to near optimum moisture content and compacted to a minimum of 95 percent of the maximum dry density as determined by ASTM-D1557. Care should be taken to achieve uniform compaction across the pavement area. Compaction levels should not vary by more than 5 percent between the highest and lowest acceptable readings. It is important that construction observation and testing be performed to verify that these recommendations are complied with. It is important that pavement grades be set to provide positive drainage to suitable drainage structures. A desirable slope for drainage in paved areas is two percent. Soil Corrosion Soils on this site are not expected to contain salts in sufficient concentration to be considered corrosive to metal or concrete. However, as a precautionary measure, we recommend that all concrete in contact with the onsite soils contain Type II cement and be placed in accordance with ACI procedures. 6.0 Limitations The recommendations contained in this report are based on our field explorations and our understanding of the proposed construction. The subsurface data used in the preparation of this 60-00187X001/6019R176.doc Page 8 of 10 Copyright 1999 Kleinfelder, Inc. KLEINFELDER 2405 140th Avenue, NE, Suite Al 01, Bellevue, WA 98005 (425) 562-4200 (425) 562-4201 fax report was obtained from the four borings performed for this investigation. It is possible that variations in the soil and groundwater conditions could exist between the points explored. The nature and extent of variations may not be evident until construction occurs. If any conditions are encountered at this site, which are different from those described in this report, our firm should be immediately notified so that we may make any necessary revisions to recommendations contained in this report. In addition, if the scope or location of the planned construction changes from that described in this report, our firm should also be notified. This report was prepared in accordance with the generally accepted standard of practice at the time the report was written. No warranty, express or implied, is made. It is the Client's responsibility to see that all parties to the project including the designer, contractor, subcontractors, etc. are made aware of this report in its entirety. The use of information contained in this report for bidding purposes should be done at the Contractor's option and risk. 7.0 Additional Services The recommendations made in this report are based on the assumption that an adequate program of tests and observations will be made during construction to verify compliance with these recommendations. These tests and observations should include, but not necessarily be limited to, the following: • Observations and testing during site preparation, earthwork and structural fill placement. • Observations of footing excavations. • Consultation as may be required during construction. We also recommend that project plans and specifications be reviewed by us to verify compatibility with our conclusions and recommendations. Additional information concerning the scope and cost of these services can be obtained from our office. 60-00187X001 /6019R 176.doc Copyright 1999 Kleinfelder, Inc. Page 9 of 10 t' i - �\ ,UItu AI0i BdIt",ill', WA `1 i)':Jii.� -._ ib'-J_"0 � R . l .ti P F L J F is _ u> 1 lJth Avenue, E, - 8.0 Closure We appreciate the opportunity to be of service on this project. Should you have any questions regarding this report or wish to discuss additional services, please do not hesitate to contact the undersigned at (425) 562-4200, or Joel Carson, Kleinfelder's Client Service Manager to COSTCO Wholesale at (208) 376-9700. Sincerely, KLEINFELDER, INC. Susan G. Harrison, P.E. Project Engineer James M. Schmidt, P.E. Manager Geotechnical Engineering cc: Joel Carson; Kleinfelder, Boise, Idaho Chris Ferko; Barghausen 60-00187X001/6019R 176.doc Copyright 1999 Kleinfelder, Inc. rl�-5i —A-sk� n: �►IOHAI- I EXPIRES 8/31/ � 00/ Page 10 of 10 K L E I N F E L D E R 2405 140th Avenue, NE, Suite A101, Bel levue, WA 98005 (4 25) 562-4200 (425? 562-4201 fax Sl�' S• i '"1y 4 S �-tom' �f� �=. 1 � f .. I ` ' •r�• --i Y�"�-� ram, r � , ' • - — 1• � ^ . Pier �--; -�..J_ � F � �t C��l�: ' • ' • { - �j •i ; r r._ ' Y ilgdi 2 -•I .� � �Itif ' �� - LQ - Pw:c•,w Lake �� �,; `•� .ti . %r�'•• i ' r,�l ' .`-fj i '� r "-� T.rr'. y� � ':ea i•�� ." ., ! f - I•' is � J . f� /JI � ''",,.LLLfff� . 1. - �'7��� I-L• {i % 4eY,'.., •� _ l •t 1 I 'All if • 5Y�`'••�......-i . SM i�Arn� . - 'r • • Ir-r` . ' f ! ,�7-�'?�!-.. I, j 1 J�4[C k E :1urJnlr :'- rx loi' Site I- I_•�- — �-cfr - _- i Li ti,}„Tr't'-`iY• •-••Y`•1�i •�: ,•';. Al I •� ��' .j I �; `''' ` r is =} Air 741 � - -_ ' -�: .r �••, r � i '*w-."r! _j� t. 7" +:r� :3' Irrr ' f ' r• Y-.--.�' ♦ �I.'r? .L• �� I i �i F\ .� trr y �j S •I' •r }•-'i' {I'I S'•'yr,r .. �I „":'. i;.+�• l i f ` I `�• �.� f' � i. '}' �, r •fir ' .c' f + •_ j�.=� .,�'� '�'��� �+� ; • ._�.: .ice. w-'• ' .�_ •,1�� �� �1 r y r.l c {r 3f � �f" j��'�'"�: r~} I +'I' �`� �:�'r`w: I• �.1;.�t.: r '� � ', ^ • �� • I , �,5,.�`• - •'NI.'�'•lr !! rkr� � � l�,r ' ,lff . ram•"'i' •-''•. ••�x � I f `+L.���' -y .� + �.�� j ...'r .�. ' I � J' -� .'6',. ��.+' ` .� .��•wr�.FYI�}��3�'J 13i4Sdgd6�•ta7d'ri�R �• + .� .� \ ��. - _l":i.-'i. --- IJ �{ 0 2000 Scale in feet Reference) USGS 7.51 topographic quadrangle, Poverty Bay, Wash„ 1981 L:\DRAWINGS\6000187X\ FIG 1.DWG COSTCO Ga:ollne Recall Facility FIGURE Warehouse No. 61 VICINITY MAP 35100 Enchanted Parkway South A-1 Federal Way, Washington KLEINFELDER Project: 60-0018-7X.001 11 /30/99 Is ! C❑STC❑ BUILDING ` I q B— 1 PARCEL 2 {II l III if D c I I 1 K e 0 100 t913-1 Klelnfelder boring number and approximate location Scale in feet References ❑veralL Site Plan,,, Location No. 61, by Harghausen Consulting Engineers, Inc., dated 10/15/99 I L•\DRAWINGS\6000187X\FIG2.DWG COSTCO Gasoilne Retail Facility FIGURE Warehouse No. 61 SITE PLAN A-2 I 35100 Enchanted Parkway South Federal Way. Washington YL£iNFELDER Project: 60-0018-7X.001 11/30/99 a w LABORATORY FIELD * _ ,2 ,^ WELL/PIEZO r? wo E•= H G7� � c _� u x wxw aw CONSTRUCTION a'" Zw H FW a s �o a° o a� A Q Oz F aQ.N w a "'z Z O L 1 0 I 1 i 1 I I I � 1 I I 1 1 I I 1 ! I 1 I U.S.C.S. 0 SOIL DESCRIPTION z SURFACE: Gravel paving relatively flat. GP o b" tine gravel paving. ML Light gray -brown, sandy SILT with gravel, (very stiff, moist), TILL Gray silty, fine to medium SAND with gravel, (very dense, moist), TILL s 22 S-1 SM 50/6" , i r I k I I I I ! I I I r I I 5 I 1 1 5 , i 25 S-2 r r I 40 38 ! I I 1 I i I I I I I I i I S I 1 I I i I I 1 I i I I I 1 r I I z 20 S-3 20 1 I I 1 1 r I 1 17 1 1 10 1 I 1 I I 1 I 1 15 I 1 , I I I 1 I 1 I 1 � � 1 I I I I I i i I 1 1 1 1 l 1 � � s I I 20 I I 1 { 1 { I I { ` DATE DRILLED: 11-23-99 LOGGED BY: WSL REVIEWED BY: SGH - slight increase in percentage of gravel - grades to dense i — — — — — Light -gray, fine to medium SAND with silt, (very dense, moist), TILL , I � I i : , I , SP- I 1 r 514i I 1 s r 15 S-4 { 1 e 50/6" 1 1 � 1 Light -gray, silty, fine to medium SAND ' SM with gravel, (very dense, moist), TILL I I I I I I 1 I Light -gray silty, flue GRAVEL with sand,' (very dense, moist), TILL I I 1 I I I 1 I to 37 S-5 G1vI 1 15 • o 50/3" E I 1 ! I 1 SURFACE ELEVATION (feet): DRILLING METHOD: HSA Auger TOTAL DEPTH (feet): 23.0 DRILLER: Holt Drilling DIAMETER OF BORING (in): 4 1/4 CASING SIZE: COSTCO Gasoline Retail Facility k"KILEINFELDER Federal Way, Washington AND ENVIRONMENTAL GEOTECHNICAL AND MATERIALS ENGINEERS SOILS BORING LOG I o 4 QI I FIGURE A -3a m PAGE 1 of TESTING PROGRAM LABORATORY FIELD U.S.C.S. WELL/PIEZO r j We F F: G7�" F E S S W W C p CONSTRUCTION a �F zw E • W FZ .d .1 �v� F c ^�_ 3 °v d� z v}j W ca d F oz nVi A FQ+N W r LL -Z U a z O a , r GM ° i 50/6" a SOIL DESCRIPTION - grades to coarse gravel Boring completed at 23 feet on 11/23/99. Groundwater not observed during drilling. *SAMPLER TYPE e Cal: (3"OD) Split Spoon Cal Split Spoon (� SPT (2" OD)' Shelby m iQ� Split Spoon Tube Grab No Recovery (w! liners) **HAMMER WEIGHT 300 Ibs (30" Drop) 300 Ibs (30" Drop) 140 Ibs (30" Drop) COSTCO Gasoline Retail Facility FIGURE KIKLEINFELDER Federal Way, Washington A -3b GEOTECHNICAL AND ENVIRONMENTAL ENGINEERS BORING LOG SOILS AND MATERIALS TESTING IECT NUMBER: 60.00187x-001 B_1 PAGE 2 of 2 TESTING PROGRAM U.S.C.S. LABORATORY FIELD d WELL/PIEZO ' WW SOIL DESCRIPTION a H H w E w o CONSTRUCTION i � Zw W v �EW i m �; 7 z G OZ F e-N p' `" SURFACE: Gravel graving, at. 0 " AL 3" gravel paving E Gray silty fine to medium SAND with 1 ! r SM ` gravel, (dense, moist), FILL zo S-1 - grades to very dense r ! 24 I a 1 I I r 1 30 r r 1 ! - grades to dense with gray/brown mottling 5 1 1 ! I I I I 1 15 S-2 ' ! ' 18 ' 1 1 I I i r 1 1 ! I 1 I I 1 20 1 1 1 1 ' ! 35 S-3 i grades to very dense I 1 ' ' 30 Gray silty fine to medium SAND with ! I I I 1 1 • I 1 SM gravel, (very dense, moist), TILL 10 1 1 1 1 1 1 i I i 1 ' 1 1 1 r 1 1 23 S-4 -grades to Iight gray -brown with 36 occasional clean sand lenses <1'I thick 1 I I 1 I I I 1 I I I I I 5015" I5 I I I I 1 I I I 1 I I 1 1 i 1 I 1 1 I ! I 1 I I - groundwater seepage at 16 feet, grades to I I 1 wet 1 1 1 30 S-5 - becomes gray, moist at 18 feet 46 t 50/5'. I o ! I I i i f f 20 DATE DRILLED: 11-23-99 SURFACE ELEVATION (feet): DRILLING METHOD: HSA Auger LOGGED BY: WSL TOTAL DEPTH (feet): 23.0 DRILLER: Holt Drilling REVIEWED BY: SGH DIAMETER OF BORING (in): 4 1/4 CASING SIZE: COSTCO Gasoline Retail Facility FIGURE Federal Way, Washington KLEINFELDER A 4a GEOTECHNICAL AND ENVIRONMENTAL ENGINEERS BORING LOG SOILS AND MATERIALS TESTING PROJECT NUMBER: 60-00187s-001 B_2 I PAGE 1 of 2 I TESTING PROGRAM. U.S.C.S. LABORATORY I FIELD 4 WELL/PIEZO a w W * *� �-� a�,�C. F eCA [ v> CONSTRUCTION a wo av N 2 Z>1 w F w Fz .a i da Z A d 3 Qo Oz '50 d a s x O= �-'- d rn �z 20- 23 SOIL DESCRIPTION i i I - gravel increases at 20 feet, brown, wet I I I I I I I I I 7 I * SAMPLER e Cal. q"OD) Split TYPE Split Spoon Split Spoon (w! liners) **HAMMER WEIGHT 300 Ibs 300 Ibs (30" Drop) (30" Drop) KLEINFELDER GEOTECHNICAL AND ENVIRONMENTAL ENGINEERS SOILS AND MATERIALS TESTING fECT NUMBER: 60-00187x-001 uar-Ing LVI[ pltL L= GL LJ lucl U11 111l.]177. Groundwater seepage encountered at 16 feet. Groundwater table encountered at 20 feet during drilling. ®SPT (2" OD) Shelby Grab Split Spoon 1 Tube 140 Ibs (30'' Drop) COSTCO Gasoline Retail Facility Federal Way, Washington BORING LOG B-2 O No a Recovery Q FIGURE A -4b PAGE 2 of 2 TESTING PROGRAM U.S.C.S. LABORATORY FIELD WELL/P[EZO W P- F E, " E ='v CONSTRUCTION W: UW zW w 'z u v, >= W ■= °•� x a .: ins `c z G 0z Cnz 3 C6 SOIL DESCRIPTION 4" gray, Light g SAND SM r " r " 1 r 2 2 18 S-1 S,rI " " I 5 , 1 , " 17 S-2 Ill r r " 10 8 r � s " 1 21 S-3 Si1I 29 z 19 gravel surtop paving �-brown, siity fine to medium th gravel, (loose, moist), FILL Light gray, silty fine to medium SAND with gravel, (dense, moist), FILL - grades to medium dense Gray silty fine SAND with gravel, (dense, moist), TILL Boring completed at 9 feet on 1112311 Groundwater not encountered during drilling DATE DRILLED: 11-23-99 SURFACE ELEVATION (feet): DRILLING METHOD: HSA Auger LOGGED BY: WSL TOTAL DEPTH (feet): 9.0 DRILLER: Holt Drilling REVIEWED BY: SGH DIAMETER OF BORING (in): 4 1/4 CASING SIZE: COSTCO Gasoline Retail Facility FIGURE Federal Way, Washington k4K.LEINFELDER A - 5 GEOTECHNICAL AND ENVIRONMENTAL ENGINEERS BORING LOG SOILS AND MATERIALS TESTING ROJECT NUMBER: 60-00187x-001 B-3 PAGE 1 of 1 O o. co q TESTING PROGRAM U.S.C.S. LABORATORY FIELD w o SOIL DESCRIPTION E ,a WELL/PIEZO a F F C7� a" c w 6 aw an CONSTRUCTION zw ; n a d F x �z 3= Q� z C Q Oz c- a p `'' A I 0— `" 'nz SURFACE: Gravel paving. 3oIn a 'z c 10- 15 - ' 6" gravel paving J Gray silty fine to medium SAND with + gravel, (dense, moist), FILL 14 S-1 SM I 1 I i 20 I I I I I I I I f I 18 I I I r I I I I I I I I I I I I 7 S-2 - grades to medium dense I I I I I 10 13 I Finnn- te-rmi trued--beGi7iiZsal-at E5 feet at 2 locations on a boulder or on very dense glacial till. Groundwater not encountered during drilling. DATE DRILLED: 11-23-99 SURFACE ELEVATION (feet): DRILLING METHOD: HSA Auger LOGGED BY: WSL TOTAL DEPTH (feet): 6.5 DRILLER: Holt Drilling REVIEWED BY: SGH DIAMETER OF BORING (in): 4 1/4 CASING SIZE: COSTCO Gasoline Retail Facility k4KLEINFELDER Federal Way, Washington GEOTECHLAND D MA ERIIA S TEST NG GINEERS SOI SANBORING LOG PROJECT NU-•IBER: 60-00187x-001 B-4 O a a d FIGURE I A - 6 �C PAGE 1 of 1 TESTING PROGRAM U.S.C.S. LABORATORY FIELD WELL/PIEZO w SOIL DESCRIPTION wo H �� o x CONSTRUCTION a aF; E Zw W a 'a F L F w �z �= A ac C 3 U as a. v:z z A 3 Lam4 cO V �I SURFACE: Level grassy area in parking lot. U a .a °z p a , { 0 I" sod and topsoil SM Light gray silty SAND with gravel cobbles, i boulders, (dense, moist), FILL I 1 I I 1 71 50/51, NR 1 I I 1 r + + GM Gray silty GRAVEL with sand and cobbles, ° < (dense, moist), FILL 5 I I 1 k 1 1 19 S-2 1 1 = 1 1 25 20 a o I + + I 1 I 1 I 1 I r I I + 1 r 1 SM , Gray fine silty SAND with occasional ! S-3 gravel, (medium dense, moist), FILL r 1 , I I 1 I 8 I 1 I 1 10 10 , , I 6 S-4 13 r 1 12 I I r ML Gray brawn, sandy SILT with roots and ' 2 S-5 organics, (soft, wet), RELICT TOPSOIL. I + I + 1 • i 1 : 1 , I 1 , 1 1 SM - Light gray -brown, silty fine SAND, (medium dense, wet), ALLUVIUM 15 t i I 1 I I r l l l - t r 1 1 1 � • 1 I 1 I 1 I I t 5 5-6 16 I 1 1 21 + I 1 ` 19 — Boring completed at 19 feet on 11/23/99. Groundwater encountered at 12 feet during drilling. DATE DRILLED: 11-23-99 SURFACE ELEVATION (feet): DRILLING METHOD: HSA Auger LOGGED BY: WSL TOTAL DEPTH (feet): 19.0 DRILLER: Holt Drilling REVIEWED BY: SGH DIAMETER OF BORING (in): 4 1/4 CASING SIZE: COSTCO Gasoline Retail Facility FIGURE KIKLEINFELDER Federal Way, Washington A _ 7 GEOTECI NICAL AND ENVIRONMENTAL BORING BORING LOG SOILS AND MATERIALS TESTING PRO.IF.CT ,\UN. 111ER: 60-00187x-001 B-5 TESTING PROGRAM U.S.C.S. LABORATORY FIELD * w WELL/PIEZO > w w F c 7 ce wx w w SOIL DESCRIPTION p CONSTRUCTION wo gF c zw a oaG Z Oz F" Qo °"'�' W r C, CC -' Q `n cnz SURFACE: Flat NE of Parcel 1 3'go Q a e o F, grassy, portion U a a z C 0- 5- 10 �5r ' P sod and topsoil Light gray silty GRAVEL with sand and ' GM < cobbles, (medium dense, moist to wet), FILL 14 S-1 - grades to very dense, moist 3q Light gray silty, fine to medium SAND with gravel, (very dense, moist), FILL r SM r r � 19 S-2 r 20 r ' r , 50/4„ r r r i ' 12 12 S-3 Light brown silty fine to medium SAND 6 with gravel, trace organics, (dense, moist), ' r r r SM ALLUVIUM , r r 1 1 , r , , , r 6 S-4 - grades to light gray -brown, wet 12 ' 14 r r fluring Lcra,uILUMU uuc u, M.l ,ar ai I . � feet on very dense glacial till or gravel on 11/23/99. Groundwater encountered at approximately 12 feet during drilling. ■ l_ DATE DRILLED: 11-23-99 SURFACE ELEVATION (feet): DRILLING METHOD: HSA Auger LOGGED BY: WSL TOTAL DEPTH (feet): 15.1 DRILLER: Holt Drilling REVIEWED BY: SGH DIAMETER OF BORING (in): 4 1/4 CASING SIZE: COSTCO Gasoline Retail Facility FIGURE Federal Way, Washington k4KLEINFELDER A _ g GEOTEC NICAL SOILS AND DMA ERIALS TESTING ENVIRONMENTAL ENGINEERS BORING LOG PROJECT NUMBER: 60-00187x-001 B-6 PAGE 1 of I SOIL CLASSIFICATION CHART MAJOR DIVISIONS GRAVEL AND GRAVELLY SOILS COARSE GRAINED MORE THAN 50% SOILS OF COARSE FRACTION RETAINED ON NO. 4 SIEVE SAND MORE THAN sox AND OF MATERIAL IS LARGER THAN NO. SANDY 2D0 SIEVE SIZE SOILS MORE THAN 50■� OF COARSE FRACTION PASSING ON NO.4 SIEVE SILTS AND FINE GRAINED CLAYS SOILS MORE THAN sox OF MATERIAL IS SMALLER THAN SILTS NO.200 SIEVE SIZE AND CLAYS HIGHLY ORGANIC NOTE: DUAL SYMBOLS ARE USED TO INDICATE BORDERLINE SOIL CLASSIFICATIONS SOIL CLASSIFICATION LEGEND KLEINFELDER Project # 60-00187X-001 FIGURE A_g SOILS SYMBOLS TYPICAL DESCRIPTIONS GRAPH LETTER . `■ . �■ WELL -GRADED GRAVELS, GRAVEL - CLEAN r ►�r � C7 W SAND MIXTURES, LITTLE OR NO GRAVELS FINES "�' ° ❑' �' p POORLY -GRADED GRAVELS, GRAVEL -SAND MIXTURES, LITTLE (LITTLE OR NO FINES) o pQa Q O 0 a Q OR NO FINES GRAVELS WITH n D ■ a G M SILTY GRAVELS, GRAVEL - SAND - O SILT MUCTURES FINES c GC CLAYEY GRAVELS, GRAVEL -SAND - f1PPRECIAE3LE AMOU pF FINES) CLAY MIXTURES SW WELL -GRADED SANDS, GRAVELLY CLEAN SANDS SANDS, LITTLE OR No FINES Sp ppORLY-C,FWDED SANDS, (UTrLE OR NO FINES) GRAVELLY SAND, LITTLE OR NO FINES SANDS WITH SILTY SANDS, SAND- SILT FINES MncTUREs (APPRECLABI.E AAAOUN iiL CLAYEY SANDS, SAND -CLAY OF FINES) MIXTURES INORGANIC SILTS AND VERY FINE L SANDS, ROCK FLOUR, SILTY OR CLAYEY FINE SANDS OR CLAYEY SILTS WITH SLIGHT PLASTICITY_ INORGANIC CLAYS OF LOW TO CL MEDIUM PLASTICITY, GRAVELLY LIQUID LIMIT CLAYS, SANDY CLAYS, SILTY LESS THAN 50 CLAYS, LEAN CLAYS — — O L ORGANIC SILTS AND ORGANIC - — — — SILTY CLAYS OF LOW PLASTICITY INORGANIC SILTS, MICACEOUS OR M H D WTOMACEOUS FINE SAND OR SILTY sops `+H INORGANIC CLAYS OF HIGH LIQUID LIMIT GREATER THAN 50 PLASTICITY O H ORGANIC HIGH CITY, ORGANIC C SILTS �=�' PT PEAT, HUMUS, SWAMP SOILS WITH HIGH ORGANIC CONTENTS 1 APPLICATION FOR AUTHORIZATION TO USE REPORT OF GEOTECHNICAL INVESTIGATION COSTCO GASOLINE RETAIL FACILITY 35100 ENCHANTED PARKWAY SOUTH FEDERAL WAY, WASHINGTON KLEINFELDER PROJECT NUMBER 60-0018-7X.001 DATED December 9,1999 TO: Kleinfelder, Inc. 2405 1401h Avenue, NE, Suite A101 Bellevue, Washington 98005 FROM: Applicant [State here the use(s) contemplated] hereby applies for permission to: for the purpose(s) of: [State here why you wish to do what is contemplated as set forth above] Applicant understands and agrees that Kleinfelder, Inc. is the copyright owner of the above identified report and that unauthorized use or copying of the above identified report is strictly prohibited without the express written permission of Kleinfelder, Inc. and Kleinfelder's client. Applicant understands that Kleinfelder, Inc. and/or Kleinfelder's client, may withhold such permission at its sole discretion, or grant such permission upon such terms and conditions as it deems acceptable. Dated: Applicant by 60-00187X001/6019R176.doc Page 1 of 1 Copyright 1999 Kleinfelder, Inc. Form No. 14 Subdivision Guarantee Guarantee No.: NCS-919740-WAl RECEIVED APR 16 2019 CITY OF FEDERAL WAY COMMUNITY DEVELOPMENT GUARANTEE Issued by First American Title Insurance Company 818 Stewart Street, Suite 800, Seattle, WA 98101 Title Officer.- Lauren Humphreys Phone: (206)728-0400 FAX.- (206)448-6348 First American Title Insurance Company Form No. 14 Guarantee No.: NCS-919740-WAl Subdivision Guarantee (4-10-75) Page No.: 2 $ t A M g 4 f� r 7 A 2 First American Title Insurance Company National Cainmeirial Services 818 Stewart Street, Suite 800, Seattle, WA 98101 (206)728-0400 - (800)526-7544 FAX (206)448-6348 LIABILITY $ To Be Determined SUBDIVISION GUARANTEE ORDER NO.: NCS-919740-WA1 FEE $ 750.00 TAX $ 76.50 YOUR REF.: Costco Wholesale Corporation, a Washington corporation First American Title Insurance Company a Corporation, herein called the Company Subject to the Liability Exclusions and Limitations set forth below and in Schedule A. GUARANTEES Barghausen Consulting Engineers, Inc. herein called the Assured, against loss not exceeding the liability amount stated above which the Assured shall sustain by reason of any incorrectness in the assurances set forth in Schedule A. LIABILITY EXCLUSIONS AND LIMITATIONS No guarantee is given nor liability assumed with respect to the validity, legal effect or priority of any matter shown therein. The Company's liability hereunder shall be limited to the amount of actual loss sustained by the Assured because of reliance upon the assurance herein set forth, but in no event shall the Company's liability exceed the liability amount set forth above. 3. This Guarantee is restricted to the use of the Assured for the purpose of providing title evidence as may be required when subdividing land pursuant to the provisions of Chapter 58.17, R.C.W., and the local regulations and ordinances adopted pursuant to said statute. It is not to be used as a basis for closing any transaction affecting title to said property. Dated: July 31, 2018 at 7:30 A.M. FlrstAmencan Tit/e Insurance Company Form No. 14 Subdivision Guarantee (4-10-75) SCHEDULE A The assurances referred to on the face page are: A. Title is vested in: Costco Wholesale Corporation, a Washington corporation Guarantee No.: NCS-919740-WAI Page No.: 2 B. That according to the Company's title plant records relative to the following described real property (including those records maintained and indexed by name), there are no other documents affecting title to said real property or any portion thereof, other than those shown below under Record Matters. The following matters are excluded from the coverage of this Guarantee: 1. Unpatented Mining Claims, reservations or exceptions in patents or in acts authorizing the issuance thereof. 2. Water rights, claims or title to water. 3. Tax Deeds to the State of Washington. 4. Documents pertaining to mineral estates. DESCRIPTION: THAT PORTION OF THE VACATED PLAT OF EAST TACOMA CENTRAL ADDITION "B", ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 4 OF PLATS, PAGE 43, IN KING COUNTY, WASHINGTON, DESCRIBED AS FOLLOWS: COMMENCING AT THE SOUTHWEST CORNER OF SECTION 21, TOWNSHIP 21 NORTH, RANGE 4 EAST, W.M., IN KING COUNTY, WASHINGTON; THENCE NORTH 1034'08" EAST ALONG THE WEST LINE OF SAID SUBDIVISION 496.66 FEET; THENCE SOUTH 88035'16" EAST 50.00 FEET TO THE EAST MARGIN OF 16TH AVENUE SOUTH AND THE TRUE POINT OF BEGINNING; THENCE SOUTH 88035'16" EAST 470.00 FEET; THENCE SOUTH 1028'19" WEST 467.20 FEET TO THE NORTH MARGIN OF SOUTH 352ND STREET; THENCE NORTH 88031'41" WEST ALONG SAID NORTH MARGIN 470.79 FEET TO THE EAST MARGIN OF 16TH AVENUE SOUTH; THENCE NORTH 1034'08" EAST ALONG SAID EAST MARGIN 466.71 FEET TO THE TRUE POINT OF BEGINNING; EXCEPT THAT PORTION DEEDED TO THE CITY OF FEDERAL WAY BY DEED RECORDED MAY 3, 2002 UNDER RECORDING NO. 20020503001231. APN: 219260-0290-00 First American Title Insurance Company Form No. 14 Subdivision Guarantee (4-10-75) RECORD MATTERS: General Taxes for the year 2018. Tax Account No.: Amount Billed: Amount Paid: Amount Due: Assessed Land Value: Assessed Improvement Value: 219260-0290-00 $ 61,788.01 $ 30,894.01 $ 30,894.00 $ 3,898,400.00 $ 0.00 Guarantee No.: NCS-919740-WAI Page No.: 2 2. Potential charges, for the King County Sewage Treatment Capacity Charge, as authorized under RCW 35.58 and King County Code 28.84.050. Said charges could apply for any property that connected to the King County Sewer Service area on or after February 1, 1990. Note: Properties located in Snohomish County and Pierce County may be subject to the King County Sewage Treatment Capacity Charges. To verify charges contact: (206) 296-1450 or CapChargeEscrow@kingcounty.gov. 3. Facility Charges, if any, including but not limited to hook-up, or connection charges and latecomer charges for water or sewer facilities of Federal Way Water and Sewer District as disclosed by instrument recorded August 4, 1986 as Recording No. 8608041129. 4. 7 Right to make necessary slopes for cuts or fills upon said premises for S 352nd Street as granted by deed recorded May 7, 1946 under Recording Nos. 3566431 and 3566432. Deed of Trust and the terms and conditions thereof. Grantor/Trustor: Federal Way Investors, a limited partnership, as Nominee Grantee/Beneficiary: Federal Way Northwest 348th Equities, a Washington limited partnership Trustee: Chicago Title Insurance Company, a corporation Amount: $3,030,476.90 Recorded: February 8, 1983 Recording Information: 8302080125 Affects: The land and other property. Easement, including terms and provisions contained therein: Recording Information: August 20, 1985 under Recording No. 8508200809 In Favor of: Lakehaven Sewer District, a Washington municipal corporation For: Sewer mains Covenants, conditions, restrictions and/or easements: Recorded: October 27, 1988 Recording No.: 8810271105 First American Title Insurance Company Form No. 14 Subdivision Guarantee (4-10-75) Guarantee No.: NCS-919740-WAl Page No.: 2 8. Easement, including terms and provisions contained therein: Recording Information: December 27, 1988 under Recording No. 8812270577 In Favor of: Puget Sound Power & Light Company, a Washington corporation For: Electric transmission and/or distribution lines 9. Easement, including terms and provisions contained therein: Recording Information: May 12, 1989 under Recording No. 8905120218 In Favor of: Federal Way Water and Sewer, a municipal corporation For: Water facilities Document(s) declaring modifications thereof recorded July 26, 1991 as Recording No. 9107260643 of Official Records. 10. Easement, including terms and provisions contained therein: Recording Information: May 15, 1989 under Recording No. 8905150793 In Favor of: Pacific Northwest Bell Telephone Company, a Washington coporation For: Underground cables and aboveground telephone cabinets 11. Deed of Trust and the terms and conditions thereof. Grantor/Trustor: Robert J. Knutsen and KDE & Associates Grantee/Beneficiary: B. Scott Bolls, Eugene R. Ekblad and FWI Limited Partnership Trustee: Transamerica Title Insurance Company, a corporation Amount: $100,000.00 Recorded: May 30, 1990 Recording Information: 9005301909 Affects: The land and other property. 12. Easement, including terms and provisions contained therein: Recording Information: October 23, 1990 under Recording No. 9010231411 In Favor of: Adjacent property owners For: Parking, ingress, egress, loading, unloading, utility installations, roadways and installation of buildings Document(s) declaring modifications thereof recorded July 28, 1994 as Recording No. 9407280652 of Official Records. 13. Covenants, conditions, restrictions and/or easements: Recorded: Recording No.: October 23, 1990 9010231412 Document(s) declaring modifications thereof recorded July 28, 1994, November 22, 1994, January 13, 2000, July 18, 2000 and September 25, 2000 as Recording Nos. 9407280653, 94112205611 20000113000284, 20000718000262 and 20000925000332 of Official Records. First American Title Insurance Company Form No. 14 Subdivision Guarantee (4-10-75) Guarantee No.: NCS-919740-WAl Page No.: 2 14. A lease dated October 23, 1990, executed by West Campus Square, a Washington joint venture as lessor and G. I. Joe's, Inc., an Oregon corporation as lessee, for a term of 30 years recorded October 23, 1990 as Recording No. 9010231426 of Official Records. Said lease, among other things provides for an option to renew for a period of 4 additional terms of 10 years each. 15. The terms and provisions contained in the document entitledIndemnity Agreement, executed by and between West Campus Square Joint Venture, a Washington general partnership and The City of Federal Way, recorded September 21, 1993 as Recording No. 9309212251 of Official Records. 16. Lease made by West Campus Square, a Washington joint venture, lessor, to Circuit City Stores, Inc., a Virginia coporation, lessee, for a term of 20 years, and the covenants and conditions as therein contained, as disclosed by Memorandum of Lease dated August 31, 1994, and recorded November 29, 1994 as document no. 9411290394. Said lease, among other things provides for an option to renew for a period of 4 additional terms of 5 years each. Affects: The land and other property. 17. Easement, including terms and provisions contained therein: Recording Information: January 23, 1995 under Recording No. 9501230949 In Favor of: City of Federal Way For: Right to enter for inspection purposes 18. Deed of Trust and the terms and conditions thereof. Grantor/Trustor: Robert J. Knutsen, a married man as to his separate property Grantee/Beneficiary: Meridian Lenders III, a Washington general partnership Trustee: Chicago Title Insurance Company Amount: $2,358,478.39 Recorded: August 18, 1999 Recording No.: 19990818001342 Affects: The land and other property. 19. The terms and provisions contained in the document entitled "License" recorded February 8, 2002 as Recording No. 2002-0208002178 of Official Records. 20. Covenants, conditions, restrictions and/or easements: Recorded: Recording No.: February 8, 2002 20020208002206 21. The terms and provisions contained in the document entitledCity of Federal Way Local Improvement District Waiver of Protest Covenant, executed by and between Costco Wholesale Corporation, a First American Title Insurance Company Form No. 14 Subdivision Guarantee (4-10-75) Guarantee No.: NCS-919740-WAl Page No.: 2 Washington corporation and City of Federal Way, a Washington municipal corporation, recorded April 29, 2002 as Recording No. 20020429001245 of Official Records. 22. Easement, including terms and provisions contained therein: Recording Information: October 14, 2003 under Recording No. 20031014000196 In Favor of: Lakehaven Utility District, a municipal corporation For: Water facilities 23. Easement, including terms and provisions contained therein: Recording Information: October 14, 2003 under Recording No. 20031014000197 In Favor of: Lakehaven Utility District, a municipal corporation For: Water facilities 24. Matters that may be disclosed upon recordation of final subdivision. First American Title Insurance Company Form No. 14 Subdivision Guarantee (4-10-75) INFORMATIONAL NOTES Guarantee No.: NCS-919740-WAl Page No.: 2 A. Any sketch attached hereto is done so as a courtesy only and is not part of any title commitment or policy. It is furnished solely for the purpose of assisting in locating the premises and First American expressly disclaims any liability which may result from reliance made upon it. First American Title Insurance Company SCHEDULE OF EXCLUSIONS FROM COVERAGE OF THIS GUARANTEE 1. Except to the extent that specific assurance are provided in this Guarantee, the Company assumes no liability for loss or damage by reason of the following: (a) Defects, liens, encumbrances, adverse claims or other matters against the title, whether or not shown by the public records. (b) (1) Taxes or assessments of any taxing authority that levies taxes or assessments on real property; or, (2) Proceedings by a public agency which may result in taxes or assessments, or notices of such proceedings, whether or not the matters excluded under (1) or (2) are shown by the records of the taxing authority or by the public records. (c) (1) Unpatented mining claims; (2) reservations or exceptions in patents or in Acts authorizing the issuance thereof; (3) water rights, claims or title to water, whether or not the matters excluded under (1), (2) or (3) are shown by the public records. 2. Notwithstanding any specific assurances which are provided in this Guarantee, the Company assumes no liability for loss or damage by reason of the following: (a) Defects, liens, encumbrances, adverse claims or other matters affecting the title to any property beyond the lines of the land expressly described in this Guarantee, or titre to streets, roads, avenues, lanes, ways or waterways to which such land abuts, or the right to maintain therein vaults, tunnels, ramps, or any structure or improvements; or any rights or easements therein, unless such property, rights or easements are expressly and specifically set forth in said description. (b) Defects, liens, encumbrances, adverse claims or other matters, whether or not shown by the public records; (1) which are created, suffered, assumed or agreed to by one or more of the Assureds; (2) which result in no loss to the Assured; or (3) which do not result in the invalidity or potential invalidity of any judicial or non judicial proceeding which is within the scope and purpose of the assurances provided. (c) The identity of any party shown or referred to in this Guarantee. (d) The validity, legal effect or priority of any matter shown or referred to in this Guarantee. GUARANTEE CONDITIONS AND STIPULATIONS 1. Definition of Terms. The following terms when used in the Guarantee mean: (a) the "Assured": the party or parties named as the Assured in this Guarantee, or on a supplemental writing executed by the Company. (b) "land": the land described or referred to in this Guarantee, and improvements affixed thereto which by law constitute real property. The term "land" does not include any property beyond the lines of the area described or referred to in this Guarantee, nor any right, title, interest, estate or easement in abutting streets, roads, avenues, alleys, lanes, ways or waterways. (c) "mortgage": mortgage, deed of trust, trust deed, or other security instrument. (d) "public records" : records established under state statutes at Date of Guarantee for the purpose of imparting constructive notice of matters relating to real property to purchasers for value and without knowledge. (e) "date": the effective date. 2. Notice of Claim to be Given by Assured Claimant. An Assured shall notify the Company promptly in writing in case knowledge shall come to an Assured hereunder of any claim of title or interest which is adverse to the title to the estate or interest, as stated herein, and which might cause loss or damage for which the Company may be liable by virtue of this Guarantee. If prompt notice shall not be given to the Company, then all liability of the Company shall terminate with regard to the matter or matters for which prompt notice is required; provided, however, that failure to notify the Company shall in no case prejudice the rights of any Assured under this Guarantee unless the Company shall be prejudiced by the failure and then only to the extent of the prejudice. 3. No Duty to Defend or Prosecute. The Company shall have no duty to defend or prosecute any action or proceeding to which the Assured is a party, notwithstanding the nature of any allegation in such action or proceeding. 4. Company's Option to Defend or Prosecute Actions; Duty of Assured Claimant to Cooperate. Even though the Company has no duty to defend or prosecute as set forth in Paragraph 3 above: (a) The Company shall have the right, at its sole option and cost, to institute and prosecute any action or proceeding, interpose a defense, as limited in (b), or to do any other act which in its opinion may be necessary or desirable to establish the title to the estate or interest as stated herein, or to establish the lien rights of the Assured, or to prevent or reduce loss or damage to the Assured. The Company may take any appropriate action under the terms of this Guarantee, whether or not it shall be liable hereunder, and shall not thereby concede liability or waive any provision of this Guarantee. If the Company shall exercise its rights under this paragraph, it shall do so diligently. (b) If the Company elects to exercise its options as stated in Paragraph 4(a) the Company shall have the right to select counsel of its choice (subject to the right of such Assured to object for reasonable cause) to represent the Assured and shall not be liable for and will not pay the fees of any other counsel, nor will the Company pay any fees, costs or expenses incurred by an Assured in the defense of those causes of action which allege matters not covered by this Guarantee. (c) Whenever the Company shall have brought an action or interposed a defense as permitted by the provisions of this Guarantee, the Company may pursue any litigation to final determination by a court of competent jurisdiction and expressly reserves the right, in its sole discretion, to appeal from an adverse judgment or order. (d) In all cases where this Guarantee permits the Company to prosecute or provide for the defense of any action or proceeding, an Assured shall secure to the Company the right to so prosecute or provide for the defense of any action or proceeding, and all appeals therein, and permit the Company to use, at its option, the name of such Assured for this purpose. Whenever requested by the Company, an Assured, at the Company's expense, shall give the Company all reasonable aid in any action or proceeding, securing evidence, obtaining witnesses, prosecuting or defending the action or lawful act which in the opinion of the Company may be necessary or desirable to establish the title to the estate or interest as stated herein, or to establish the lien rights of the Assured. If the Company is prejudiced by the failure of the Assured to furnish the required cooperation, the Company's obligations to the Assured under the Guarantee shall terminate. S. Proof of Loss or Damage. In addition to and after the notices required under Section 2 of these Conditions and Stipulations have been provided to the Company, a proof of loss or damage signed and sworn to by the Assured shall be furnished to the Company within ninety (90) days after the Assured shall ascertain the facts giving rise to the loss or damage. The proof of loss or damage shall describe the matters covered by this Guarantee which constitute the basis of loss or damage and shall state, to the extent possible, the basis of calculating the amount of the loss or damage. If the Company is prejudiced by the failure of the Assured to provide the required proof of loss or damage, the Company's obligation to such Assured under the Guarantee shall terminate. In addition, the Assured may reasonably be required to submit to examination under oath by any authorized representative of the Company and shall produce for examination, inspection and copying, at such reasonable times and places as may be designated by any authorized representative of the Company, all records, books, ledgers, checks, correspondence and memoranda, whether bearing a date before or after Date of Guarantee, which reasonably pertain to the loss or damage. Further, if requested by any authorized representative of the Company, the Assured shall grant its permission, in writing, for any authorized representative of the Company to examine, inspect and copy all records, books, ledgers, checks, correspondence and memoranda in the custody or control of a third party, which reasonably pertain to the Loss or Damage. All information designated as confidential by the Assured provided to the Company, pursuant to this Section shall not be disclosed to others unless, in the reasonable judgment of the Company, it is necessary in the administration of the claim. Failure of the Assured to submit for examination under oath, produce other reasonably requested information or grant permission to secure reasonably necessary information from third parties as required in the above paragraph, unless prohibited by law or governmental regulation, shall terminate any liability of the Company under this Guarantee to the Assured for that claim. Forth No. 1282 (Rev. 12/15/95) First American Title Insurance Company 6. Options to Pay or Otherwise Settle Claims: Termination of Liability. In case of a claim under this Guarantee, the Company shall have the following additional options: (a) To Pay or Tender Payment of the Amount of Liability or to Purchase the Indebtedness. The Company shall have the option to pay or settle or compromise for or in the name of the Assured any claim which could result in loss to the Assured within the coverage of this Guarantee, or to pay the full amount of this Guarantee or, if this Guarantee is issued for the benefit of a holder of a mortgage or a lienholder, the Company shall have the option to purchase the indebtedness secured by said mortgage or said lien for the amount owing thereon, together with any costs, reasonable attorneys' fees and expenses incurred by the Assured claimant which were authorized by the Company up to the time of purchase. Such purchase, payment or tender of payment of the full amount of the Guarantee shall terminate all liability of the Company hereunder. In the event after notice of claim has been given to the Company by the Assured the Company offers to purchase said indebtedness, the owner of such indebtedness shall transfer and assign said indebtedness, together with any collateral security, to the Company upon payment of the purchase price. Upon the exercise by the Company of the option provided for in Paragraph (a) the Company's obligation to the Assured under this Guarantee for the claimed loss or damage, other than to make the payment required in that paragraph, shall terminate, including any obligation to continue the defense or prosecution of any litigation for which the Company has exercised its options under Paragraph 4, and the Guarantee shall be surrendered to the Company for cancellation. (b) To Pay or Otherwise Settle With Parties Other Than the Assured or With the Assured Claimant. To pay or otherwise settle with other parties for or in the name of an Assured claimant any claim Assured against under this Guarantee, together with any costs, attorneys' fees and expenses incurred by the Assured claimant which were authorized by the Company up to the time of payment and which the Company is obligated to pay. Upon the exercise by the Company of the option provided for in Paragraph (b) the Company's obligation to the Assured under this Guarantee for the claimed loss or damage, other than to make the payment required in that paragraph, shall terminate, including any obligation to continue the defense or prosecution of any litigation for which the Company has exercised its options under Paragraph 4. 7. Determination and Extent of Liability. This Guarantee is a contract of Indemnity against actual monetary loss or damage sustained or incurred by the Assured claimant who has suffered loss or damage by reason of reliance upon the assurances set forth in this Guarantee and only to the extent herein described, and subject to the Exclusions From Coverage of This Guarantee. The Liability of the Company under this Guarantee to the Assured shall not exceed the least of: (a) the amount of liability stated in this Guarantee; (b) the amount of the unpaid principal indebtedness secured by the mortgage of an Assured mortgagee, as limited or provided under Section 6 of these Conditions and Stipulations or as reduced under Section 9 of these Conditions and Stipulations, at the time the loss or damage Assured against by this Guarantee occurs, together with interest thereon; or (c) the difference between the value of the estate or interest covered hereby as stated herein and the value of the estate or interest subject to any defect, lien or encumbrance Assured against by this Guarantee. S. Limitation of Liability. (a) If the Company establishes the title, or removes the alleged defect, lien or encumbrance, or cures any other matter Assured against by this Guarantee in a reasonably diligent manner by any method, including litigation and the completion of any appeals therefrom, it shall have fully performed its obligations with respect to that matter and shall not be liable for any loss or damage caused thereby. (b) In the event of any litigation by the Company or with the Company's consent, the Company shall have no liability for loss or damage until there has been a final determination by a court of competent jurisdiction, and disposition of all appeals therefrom, adverse to the title, as stated herein. (c) The Company shall not be liable for loss or damage to any Assured for liability voluntarily assumed by the Assured in settling any claim or suit without the prior written consent of the Company. 9. Reduction of Liability or Termination of Liability. All payments under this Guarantee, except payments made for costs, attorneys' fees and expenses pursuant to Paragraph 4 shall reduce the amount of liability pro tanto. 10. Payment of Loss. (a) No payment shall be made without producing this Guarantee for endorsement of the payment unless the Guarantee has been lost or destroyed, in which case proof of loss or destruction shall be furnished to the satisfaction of the Company. (b) When liability and the extent of loss or damage has been definitely fixed in accordance with these Conditions and Stipulations, the loss or damage shall be payable within thirty (30) days thereafter. 11. Subrogation Upon Payment or Settlement. Whenever the Company shall have settled and paid a claim under this Guarantee, all right of subrogation shall vest in the Company unaffected by any act of the Assured claimant. The Company shall be subrogated to and be entitled to all rights and remedies which the Assured would have had against any person or property in respect to the claim had this Guarantee not been issued. If requested by the Company, the Assured shall transfer to the Company all rights and remedies against any person or property necessary in order to perfect this right of subrogation. The Assured shall permit the Company to sue, compromise or settle in the name of the Assured and to use the name of the Assured in any transaction or litigation involving these rights or remedies. If a payment on account of a claim does not fully cover the loss of the Assured the Company shall be subrogated to all rights and remedies of the Assured after the Assured shall have recovered its principal, interest, and costs of collection. 12. Arbitration. Unless prohibited by applicable law, either the Company or the Assured may demand arbitration pursuant to the Title Insurance Arbitration Rules of the American Arbitration Association. Arbitrable matters may include, but are not limited to, any controversy or claim between the Company and the Assured arising out of or relating to this Guarantee, any service of the Company in connection with its issuance or the breach of a Guarantee provision or other obligation. All arbitrable matters when the Amount of Liability is $1,000,000 or less shall be arbitrated at the option of either the Company or the Assured. All arbitrable matters when the amount of liability is in excess of $1,000,000 shall be arbitrated only when agreed to by both the Company and the Assured. The Rules in effect at Date of Guarantee shall be binding upon the parties. The award may include attorneys' fees only if the laws of the state in which the land is located permits a court to award attorneys' fees to a prevailing party. Judgment upon the award rendered by the Arbitrator(s) may be entered in any court having jurisdiction thereof. The law of the situs of the land shall apply to an arbitration under the Title Insurance Arbitration Rules. A copy of the Rules may be obtained from the Company upon request. 13. Liability Limited to This Guarantee; Guarantee Entire Contract. (a) This Guarantee together with all endorsements, if any, attached hereto by the Company is the entire Guarantee and contract between the Assured and the Company. In interpreting any provision of this Guarantee, this Guarantee shall be construed as a whole. (b) Any claim of loss or damage, whether or not based on negligence, or any action asserting such claim, shall be restricted to this Guarantee. (c) No amendment of or endorsement to this Guarantee can be made except by a writing endorsed hereon or attached hereto signed by either the President, a Vice President, the Secretary, an Assistant Secretary, or validating officer or authorized signatory of the Company. 14. Notices, Where Sent. All notices required to be given the Company and any statement in writing required to be furnished the Company shall include the number of this Guarantee and shall be addressed to the Company at 2 First American Way. Bldg. 2, Santa Ana, CA. 92707. Form No. 1282 (Rev. 12/15/95) First American Title Insurance Company Return Address City ofFederal Way Attn Kim Scattaiella 33530 1st Way South PO Box 9718 Federal Way, WA 98063-9718 k 201503001 31 BARGHAUSEIi CON UD 14 M PAGE 6a1 OF "4 061a 2902 11,35 KING COIiNTY , WA E1883778 a�10300 /22 It 35 KING COUNTY , YUA SALE :0 so PAGE HI OF 002 STATUTORY WARRANTY DEED Grantor (s) Costco Wholesale Corporation, a Washington corporation Grantee (s) CITY OF FEDERAL WAY, a Washington municipal corporation Property Legal Description (abbreviated) PORTION SW `/4 SEC 21, T21N, R4E, W M Additional Legal(s) on Exhibit A Assessor's Tax Parcel 04(s) 219260-0180-03 THE GRANTOR(S) Costco Wholesale Corporation, for and in consideration of the City of Federal Way's approval of Permit No 0 1 -1 03289-000-00-CO for construction of gas station �a and other good and valuable consideration, conveys and warrants to the CITY OF o FEDERAL WAY, a Washmgton municipal corporation, the real property described in Exhibit "A" herewith attached and made apart hereof, and any after -acquired interest therein, situated in o King County in the State of Washington u► 0 CV o DATED THIS 1C day of_ _-3Ar.4ut1,L j 20 oL GRANTOR COSTCD//,;irALE CORPORATION By Rieh d 1 01 Its Vice -President / General Counsel 999 Lake Drive Issaquah, WA 98027 RECEIVED APR 16 2019 CITY 4F FEDERAL WAY r,OMMUNI TY CEVELOPMENT Photo Exhibit Costco Fuel Facility Expansion Store No. 61 35020 16th Ave. S. Federal Way, WA 98003 Prepared by Barghausen Consulting Engineers, Inc. April 2019 BCE# 6076 of .1" Ar Z LPnOS A'RA.q led P—Dluey3Us OD n cm . w - 0 / r � :r_� �.. ^�� � e. ,fix �•' Photo 1 Federal Way CIIsico 4061 Fuel Expansion � l 1� ec�rr6n7s , ! Ali .ate -CM T i Photo 2 a Federal Way Co=a #061 Fuel E%pansion SCE4 6076 I 7-It y it 4w r �7 VTT Photo 3 Federal Way Costco #061 Fuel Expansion BCE# 6076 Photo 4 Federal Way Castc* IIOfiI Fuel Expanslan SCEtr 6076 4. �` Ste► i •4 �` • I'veY' .. , Photo 5 Federal Wav CostcQ #061 Fuel Excansmn BCE#6076 "t- Photo 6 Federal Way Cwra 4061 Feel Fxpans-o* r aCE# 6076 rl f - Y�1 a. • I Photo 7 Federal Way Costco #061 Fuel Expansion SCEN 6076 ~ �} - � • tom' � r �SiF q Photo S Federal Way CGSSCO 4061 Fual EkpanSlan BCE# 6076 c Figure 1 Technical Information Worksheet (TIR) KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 1 PROJECT OWNER AND PROJECT ENGINEER Project Owner Costco Wholesale Phone (425) 313-8100 Address 999 Lake Drive Issaquah, WA 98027 Project Engineer Megan E.S. Palmer, P.E. Company Barghausen Phone (425) 251-6222 Part 3 TYPE OF PERMIT APPLICATION ❑ Landuse (e.g.,Subdivision / Short Subd. / UPD) ® Building (e.g.,M/F / Commercial / SFR) ® Clearing and Grading ❑ Right -of -Way Use ❑ Other I Part 2 PROJECT LOCATION AND I DESCRIPTION Project Name Costco Fuel Expansion DPER Permit # TBD Location Township 21 N Range 4 E Section 21 Site Address 35100 Enchanted Prkwy Federal Way, WA Part4 OTHER REVIEWS AND PERMITS ❑ DFW HPA ❑ Shoreline ❑ ❑ ❑ ❑ COE 404 DOE Dam Safety FEMA Floodplain COE Wetlands Management ❑ Structural Rockery/Vault/ ❑ ESA Section 7 ❑ Other Part 5 PLAN AND REPORT INFORMATION Technical Information Report Site Improvement Plan (Engr. Plans) ® Full Type of Drainage Review ❑ Targeted Plan Type (check ❑ ❑ Full (check one): ❑ Simplified one): Modified ❑ Large Project ❑ Simplified Date (include revision ❑ Directed Date (include revision dates): dates): Date of Final: Date of Final: Part 6 SWDM ADJUSTMENT APPROVALS Type (circle one): Standard / Experimental / Blanket N A Description: (include conditions in TIR Section 2) Approved Adjustment No. Date of Approval: 2016 Surface Water Design Manual 4/24/2016 1 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 7 MONITORING REQUIREMENTS Monitoring Required: Yes / Start Date: Completion Date: Describe: Re: KCSWDM Adjustment No. Part 8 SITE COMMUNITY AND DRAINAGE BASIN Community Plan: N/A Special District Overlays: N/A Drainage Basin: H lebos Creek Stormwater Requirements: Flow Control (Level 2), Ehanced Basic Water Quality, Flow Control BMPs Part 9 ONSITE AND ADJACENT SENSITIVE AREAS 0 River/Stream Unidentified Stream ❑ Lake per Critical Areas Map ❑ Wetlands ❑ Closed Depression ❑ Floodplain ❑ Other Part 10 SOILS Soil Type Alderwood Gravelly Sandy Loam Everett Alderwood Gravelly Sandy Loam ❑ High Groundwater Table (within 5 feet) ❑ Other ❑ Additional Sheets Attached Slopes 8-15% 6-15% ❑ Steep Slope ❑ Erosion Hazard ❑ Landslide Hazard ❑ Coal Mine Hazard ❑ Seismic Hazard ❑ Habitat Protection Ll ❑ Sole Source Aquifer ❑ Seeps/Springs Erosion Potential Low Low 2016 Surface Water Design Manual 2 4/24/2016 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 11 DRAINAGE DESIGN LIMITATIONS REFERENCE ❑ Core 2 — Offsite Analysis ❑ Sensitive/Critical Areas ❑ SEPA ❑ LID Infeasibility ❑ Other ❑ Additional Sheets Attached LIMITATION / SITE CONSTRAINT Part 12 TIR SUMMARY SHEET (provide one TIR Summary Sheet per Threshold Discharge Area) Threshold Discharge Area: (name or description) Core Requirements (all 8 apply): Discharge at Natural Location Number of Natural Discharge Locations: Offsite Analysis Level: (J) / 2 / 3 dated: Flow Control (include facility Level: 1 /0j/ 3 or Exemption Number summary sheet) Flow Control BMPs N/A Conveyance System Spill containment located at: Erosion and Sediment Control / CSWPP/CESCL/ESC Site Supervisor. TBD Construction Stormwater Contact Phone: TBD Pollution Prevention After Hours Phone: TBD Maintenance and Operation Responsibility (circle one): ate )/ Public If Private, Maintenance Log Required-: Yes / No Financial Guarantees and Provided: TBD Yes / No Liability Water Quality (include facility Type (circle one): Basic / Sens. Lake / nhanced Basi / Bog summary sheet) or Exemption No. Landscape Management Plan: Yes / No Special Requirements (as applicable): Area Specific Drainage Type: CDA / SDO / MDP / BP / LMP / Shared Fac. / None Requirements Name: Flood pla i n/Floodway Delineation Type (circle one): Major / Minor / Exemption / QN g; 100-year Base Flood Elevation (or range): Datum: Flood Protection Facilities Describe. N/A 2016 Surface Water Design Manual 3 4/24/2016 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 12 TIR SUMMARY SHEET (provide one TIR Summary Sheet per Threshold Discharge Area) Source Control Describe land use: Retail/Commercial (commercial / industrial land use) Describe any structural controls: Oil Control High -use Site: es / No Treatment BMP: Oil/Water Separatorw Maintenance Agreement: Yes / No with whom? COFW Other Drainage Structures Describe: Part 13 EROSION AND SEDIMENT CONTROL REQUIREMENTS MINIMUM ESC REQUIREMENTS MINIMUM ESC REQUIREMENTS DURING CONSTRUCTION AFTER CONSTRUCTION ® Clearing Limits ❑ Stabilize exposed surfaces ® Cover Measures ❑ Remove and restore Temporary ESC Facilities ® Perimeter Protection ❑ Clean and remove all silt and debris, ensure ❑ Traffic Area Stabilization operation of Permanent Facilities, restore ® Sediment Retention operation of Flow Control BMP Facilities as necessary ® Surface Water Collection ❑ Flag limits of SAO and open space preservation ❑ Dewatering Control areas ❑ Dust Control ❑ Other ❑ Flow Control ® Protection of Flow Control BMP Facilities (existing and proposed) ❑ Maintain BMPs / Manage Project Part 14 STORMWATER FACILITY DESCRIPTIONS (Note: Include Facility Summary and Sketch) Flow Control Type/Description Water Quality Type/Description ❑ Detention ❑ Infiltration ❑ Regional Facility ❑ Shared Facility ❑ Flow Control BMPs ® Other ❑ Vegetated Flowpath ❑ Wetpool 0 Filtration ® Oil Control ® Spill Control ❑ Flow Control BMPs ❑ Other Existing Detention 2016 Surface Water Design Manual 4/24/2016 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 15 EASEMENTS/TRACTS Part 16 STRUCTURAL ANALYSIS ❑ Drainage Easement ❑ Cast in Place Vault ❑ Covenant ❑ Retaining Wall ❑ Native Growth Protection Covenant ❑ Rockery > 4' High ❑ Tract ❑ Structural on Steep Slope ❑ Other ❑ Other Part 17 SIGNATURE OF PROFESSIONAL ENGINEER I, or a civil engineer under my supervision, have visited the site. Actual site conditions as observed were incorporated into this worksheet and the attached Technic Afo ation Report. To the best of my knowledge the information provided here is accurate. 2016 Surface Water Design Manual 4/24/2016 Figure 2 Vicinity Map CL ti-_ s nv ee _.._.._.._ .._.. - T 'I' Vsecu U Fhb er (B W � ffr 3S H �l3sf13MHZ13A3Afl a AV OC H W 3x •c �a ;°a _ . ...................... AV OZ AV 2 m� y m dV C,PVS. yCP N � ti a n m � g� rn KD LL Q S N-1 �p • SldI S-WL', •S ;CO W 3A • R �j ` s AV—W s A 8Z s i s �z S1 I•�/,� Sl1Z •' N S AV 4Z •i !� (D 3 a L 3 w a� 3 x8 a. h N N� N a AM)ld Q3l"H3M l0 y AS ; ; s LL V . N Sld LL a U) ao LE SAV6 .Z, LLa° W `2 N E E f0 N 0C LL a U) =-•--s .. m N d d M L. 0 nor r J's Y WE W z C a �•, d 'smz • '�t3nr~n n. snvss SAM S ld J LL p s �. _.._.._._.� ti r.V-11n m S441, F- U_ L NLNLI 1..1� rr�n V LL ai H O U 4 C C IA 41 � � t C cn W > O 1�A C Q ,, N M imC O N N CoU °r°Y�t19 AVZ; O \ V yta •C 2 Z F 6 W tIL/1 Figure 3 Drainage Basins, Subbasins, and Site Characteristics _ 94099309 uclsuedx3 lani T904 oalsoo Rem Irjapaj OT v3ayd 1L09a37H uasuedx3 laoj lw *paj 5 v3vyd � N .s n .tik.1-• -K"ni ' µby � v xooP'tiZ0'9L09 ivnNVW 30NVN3LNIVV4 (INV SNOLLV'83dO 0'06 1NVN3AOO d0 NOLL"V-1030 (INV 'SMtJVV4Wf1S Ainio`dd 'S311LLNvno aN08 0'6 u6ls9a Ueld (SddMS) ll!dS pue uolluanaJd uol;nllod J818muuo;S Z•9 u6lsaa pue slsAleuV ueld (OS3) Ia;uoO luawlpaS pue uolsoa3 VO NJIS34 (INV SIS),-lVNV (ddMSO) NOLLN3A32ld NOLLn-i-10d 2i31VMIMAO1S NOLLonaLSN00 0'9 SAM213d H3H10 0'L b00Z '66 aagwanoN pa}ep •oul 'sjeeu16u3 6ul;lnsuo0 u9snegBje8 Aq pajedaad Al!l!oed euwlose0 oolso0 posodoad 941 JOI poda�:l uol;ewiolul leolugoal Z•9 960Z '94 jago;o0 palep •oul 'japlajulal>{ Aq paaedaad jjode�j 6uuaaulbu3 1e31upsJOB0 �-9 S31G LLS (INV SDJOd3l:l -IV103dS 0'9 NOISM aNV SISA-IVNV W31SAS 30NVA3ANOO 0'9 INHMM )JeJd — L 9m614 wa;sAS Al!len0 aa3eM 9'ti walsAs 10J;u00 nnold t•, spJepue;S aouewJo}Jad E'b ABOIOJPAH 91!S pedolanaa Z't, A6oloJPAH 91!S 6ui3slx3 6'ti NOIS30 4NV SISA-lVNV A11-lIOVd .ui-iv o 2:31VM (INV (dll) 1N3NdO-13A3(l lOVdWI MOB '-lOaLN00 MO-1d 0'tb SISAIVNV 311S-dd0 0'E s;uewannbe�j wnw!uiVq joj :pey0 mold — 9 ajn61d sjuawajlnba�j leloedS ay; jo slsApuV Z'Z sjuewaalnbay aao0 ay; jo slsAleuV 6'Z fiNGmso 19tOZ] Auvvgvq 1S S1N3lN38nC)MJ (INV SNOLLIGN00 07 3!q!4x3 seoelinS snouuedwl 196jel — g aan6ld deal sl!oS — t, ain6ld sollsua;oejey0 91!6 pue 'sulseggnS 'sulse8 96eulejd — g ajn61d deal AWIO!n — Z ain6ld laags)uoM (2ill) podatj uolleuuc4ul leolugoal — 6 am6ld M31M3AO 103m0 ld 0' 6 S1N31N0C) d0 319VJL SITE DRAINAGE BASIN, SUBBASIN, AND CHARACTERISTICS MAP LEGEND COSTCO WHOLESALE FUEL FACILITY EXPANSION 0 DUST NG ASPHALT PROPOSED ASPHALT _ 35100 ENCHANTED PARKWAY SOUTH, FEDERAL WAY, WA 98003 EXISTING CONCRETE PROPOSED CONCRETE COSTCO FACILITY #61 - - - - - - - - - - - - - - EXISTING CURB PROPOSED CURB V-4V ".... EXISTING CANOPY DRIPINE ---------- ---- SAW UT LINE ❑ 20 40 410 EXISTING EASEMENT BASIN BOUNDARY EXISTING EDGE OF PAVEMENT DUSTING STORM DRAIN EXISTING UNDERGROUND WATER LINE EXISTING UNDERGROUND TELEPHONE LINE FASTING UNDERGROUND POWER EXISTING COSTCO WAREHOUSE T c� O LL w J R sQ�a0 U wo H wLLO o U ohs j w a o J O = w l- f ogQ , o $ - w 2 z E _ z Q n I Q M N N p Z.0 ww r3vl uT �i g Q � Goo 6 E 0 T L Figure 4 Soils Map . err 3 a a s is = a M1 .i /al1+li aYl� .ialll.a rai +/ a`r i+f a s ■1 i i l iaF i � :�- + • 1 • i + + + + ft am uj Ui ! � ^ `y.r r•�� `irf a[ •��� �� -ref j■ 'f■ i .��.iii e.y..1 .L � V 7 �µ/,u �� �.S .all • ;f .. •T ti a .• � - w —+ - +s �irtiGi •r, 1,7di� , • —=s AJWwa pal►,$ ou - — _ -� 91 - - ---- _ - ,. �.•, _ ti tip. �_..�. -- �*; °„i�j,. 3 ,; ' . - l -_ Z O Q LL Z Ca G Z LU 0 LU J IL a O O � 7 N �0 U T 06 c U NO � , U E C U m m E CD a f0 m a� coEmyc ° 3 �+ w w rn o ° w ¢ f6 a� 'ac 3 a c U O L N NEU) o T > o c > CDm MnO ��0 t E C N U m .L-r O U n E m E .. aO°° w m E c H m y U) N N m E tm m-0m" 0o m N r > W E C U N O O m Le+L m Um co N f° m 'C � (p N d 7 m 10 3 c o O. .0U it o U y p O N "O N w O O C E O c _ 3 m ` U c O N _ O m E w O N.0` N O' O m cA O E aO N m w N m Lcc frW7 .t.. c N d c M co 7'o � o E U w m m� � L 3 y m m U O a) Cc: a m TO°- m E cO m Q T m a) 2 m m Y c° 3 ¢ fA m o a 'Af6 c 'o `m �mcoo CL to o ETmN ° , ?- °a cco oa Mc v a m�0) m (n N N N o 'v --0 a� U O ° N N y N a v �' a� om°Uo a�N �m 3 �a 0 cp w (� N a c N Q c� Y> a m N L 0 G O a m a' z� E N U c >° a o O v c� m o) O� 0.0 a• C N a m (n Z N m m O L U o co co E O-0 > a 'O T m m O� ! U ... 3 C m f0 c U 7� >` N .r c °o O m d cc0 V�1 E E cc ° •O C Elm°U a) O m Z¢ O.O m m ° L 0 O N 3 a U (n `o .m. '� U C` N a> 7 T m C) y O) m j O_ N O Ln .L.. Z O .m. a)E N iE FL E c4 � C.) m M-¢ m H O U) U) U)- N H U tLA N d � a m G ci U 10 t L a UJ T N 'CcG C _rn = N N N m0 rn O Na ¢ N � a M J y m E .V O '° O 'o O L a fA CL C O U) N i ?i N O N cn fA O Q' S J 9¢ Q� C] m r `m � O a U) OIL I * la 3 � m Q N G V) N m N r- '0 o « m a co .... m O C aJ a .N N a E N v m �O E E E d a °a 3 'o a o o a Q a m3 a 0 d N N C a o m mU c GO u)i c 'Oa) ` d ` o o a CO m d ¢ L •o •o (n fn •o !n LL O G O G o m m T m U W O U > m c7 > m c� 'a N J m E2 com J m _G MD m m a O m m m N N N m mG (n O (n d a C R 77��pp�� �y y p,q, N 13 ! GCL O Q y O cM T N 7 U) O ch 7 N co .> = m O N CO a o U m c 0 m Z m C1 Soil Map —King County Area, Washington Map Unit Legend Map Unit Symbol AgC EwC Totals for Area of Interest USDA Natural Resources Conservation Service Map Unit Name Alderwood gravelly sandy loam, 8 to 15 percent slopes Everett-Alderwood gravelly sandy loams, 6 to 15 percent slopes Acres in AOI Percent of AOI 7.7 52.1 % Web Soil Survey National Cooperative Soil Survey 7.11 47.9% 14.81 100.0% 3/8/2019 Page 3 of 3 Figure 5 Target Impervious Surfaces Exhibit 9 I TARGET IMPERVIOUS SURFACES EXHIBIT LEGEND COSTCO WHOLESALE FUEL FACILITY EXPANSION EXISTING ASPHALT PROPOSED ASPHALT 35100 ENCHANTED PARKWAY SOUTH, FEDERAL WAY, WA 98003 EXISTING CONCRETE ! _ PROPOSED SLURRY SEAL COSTCOFACILITY #61 EXISTING CURB PROPOSED CONCRETE - - ^^ EXISTING CANOPY DRIPLINE PROPOSED CURB EXISNNG EASEME14T •••-• •------ SAWCUT LINE PP.OPEZY BOUNDARY PROPOSED CANOPY TARGET IMPERVIOUS SURFACE NONET IMPERVIOUS { n^ SURFACE r�`iLl cl In + r r I ! r rr i•v -. f Y i ram• _�I - I•� ! 1+ -+I �•�� �,� • �'-- __-_. - � -: � —� __-�-�--,� '�-�_c•----ram �_ r - .p 'r ^ 1 bWUTH 352ND STREET U � - m X W W c, 0 aY�� LL Q Q LL Q J S W 3 O Z J LL Q O ir U U W W W O LL w o U a co W N J W OD W rn O p a = W a3 Q J O U D) 2.0 CONDITIONS AND REQUIREMENTS SUMMARY 2.1 Analysis of the Core Requirements Core Requirement No. 1: Discharge at the Natural Location. Response: Discharge for both Costco parcels is contained in one Threshold Discharge area (TDA). The site is currently pre -developed, and runoff from both parcels is conveyed through an underground pipe conveyance system to the Northwest comer of the property along Enchanted Parkway. In the existing condition, runoff is treated and detained prior to entering the City Stormwater Main on Enchanted Parkway. The discharge location is not being modified with the project scope. Core Requirement No. 2: Off -Site Analysis. Response: An Off -Site Analysis has been performed and has been provided in Section 3.0. Core Requirement No. 3: Flow Control Facilities Response: The site is currently being mitigated with a Flow Control facility via an existing detention vault system. A large square vault installed with the original Costco Warehouse is supplemented by two (2) rectangular vaults that were added in 2001 to account for runoff from the construction of the Fuel Facility. The project falls within Conservation Flow Control Areas and meets Exception 2, where the developed 15-minute time step 100-year runoff peak flow is less than 0.15 CFS more than the pre -developed 100-year peak flow for applicable target surfaces. Please refer to Section 4-D of this report for further discussion. Core Requirement No. 4: Conveyance System. Response: The site currently is conveyed via an underground conveyance system. The proposed Fuel Facility Expansion will add four (4) roof drain lines and replace a single sic (6)-inch line. The remainder of the existing conveyance system will not change as a result of the proposed improvements to the Fuel Facility. The new lines will be designed to convey flow from the 100-year peak flow per the 2016 KCSWDM. Core Requirement No. 5. Construction Stormwater Pollution Prevention Response: Erosion and sediment controls will be provided to prevent the transport of sediment downstream. The proposed erosion and sediment control measures are further described in Section 8.0 of this report and have been designed pursuant to the 2016 KCSWDM. Core Requirement No. 6: Maintenance and Operations. Response: A Maintenance and Operations manual will be provided with the final TIR, as necessary. Core Requirement No. 7: Financial Guarantees and Liability. Response: Financial guarantees will be provided prior to permit approval. Core Requirement No. 8: Water Quality Facilities 6076.024. docx Response: Per the 2017 City of Federal Way Addendum to the 2016 KCSWDM, Redevelopment projects replacing 5,000 sf or more of pollution generating impervious surfaces require the entire subject property be brought into compliance. Please see part 4.0 E for more information. Core Requirement No. 9: Flow Control BMPs. Response: Current standards will require Flow Control BMPs for the area disturbed as a result of the Fuel Facility expansion. We have determined Flow Control BMPs to be infeasible for this project, due to significant site constraints. Please see section 4.0-D for a more detailed discussion. 2.2 Analysis of the Special Requirements Special Requirement No. 1: Other Adopted Area -Specific Requirements. Response: This Special Requirement is not applicable to the project. The project site is not located in an adopted area. Special Requirement No. 2: Flood Hazard Area Delineation. Response: The site does not lie within any FEMA-delineated Flood Hazard Areas; therefore, this requirement does not apply. Special Requirement No. 3: Flood Protection Facilities. Response: This Special Requirement is not applicable to the project. The site does not rely on flood protection facilities. Special Requirement No. 4: Source Control. Response: Source control has been provided for the existing fuel facility and will be extended or replaced with the proposed expansion. The fueling area is proposed to be a concrete pad fully covered by a canopy and isolated by a concrete swale. Any runoff within the existing or proposed fueling area is routed to the existing oil/water separator prior to discharge via sanitary sewer, per City requirements. Special Requirement No. 5. Oil Control. Response: The project site is considered a high -use site, therefore oil control is required. Oil control is currently being provided by a coalescing plate oil/water separator installed prior to the detention vault. 6076.024.docx Figure 6 Flow Chart for Minimum Requirements SECTION 1.1 DRAINAGE REVIEW FIGURE 1.1.2.A FLOW CHART FOR DETERMINING TYPE OF DRAINAGE REVIEW REQUIRED Is the project a single family residential or agricultural project that results in >_2,000 sf of new plus replaced impervious surface or >!7,000 sf of land disturbing activity, results in less than 5,000 square feet of new plus replaced pollution generating impervious surface, results in less than % acre of pollution generating pervious surfaces AND meets one of the following criteria? • The project meets the Basic Exemption from flow control in Core Requirement #3. Note the Basic Exemption thresholds are applied by project site. • For projects inside the Urban Growth Area on predominately till soils: The project results in no more than 7,947 square feet of target impervious surfaces' as defined in Section 1.1.2.1 AND proposed pervious area is equal to or less than 14,941 —1.88 x (total target impervious surfaces) • For projects inside the Urban Growth Area on predominately outwash soils: The project results in no more than 6,872 square feet of target impervious surfaces' as defined in Section 1.1.2.1 AND proposed pervious area is equal to or less than 20,343 — 2.96 x (total target impervious surfaces) • For outside the Urban Growth Area on predominately till soils: The project results in no more than 5,074 square feet of target impervious surfaces` as defined in Section 1.1.2.1 AND proposed pervious area is equal to or less than 11,570 — 2.28 x (total target impervious surfaces) • For outside the Urban Growth Area on predominately outwash soils: The project results in no more than 4,000 square feet of target impervious surfaces* as defined in Section 1.1.2.1 AND proposed pervious area is equal to or less than 10,720 — 2.68 x (total target impervious surfaces) • Is an agricultural project that qualifies for the 'Impervious Surface Percentage Exemption For Agricultural Projects" detailed in Core Requirement 3 SIMPLIFIED DRAINAGE REVIEW No q Section 1.1.2.1 Note: The project may also be subject to Targeted Drainage Review as determined below. Is the project a single family residential or agricultural project that results in >_2,000 sf of new plus replaced impervious surface or >_7,000 Yes DIRECTED DRAINAGE REVIEW sf of land disturbing activity AND is not subject to Large Project Section 1.1.2.3 Drainage Review as defined in Section 1.1.2.5? We Does the project result in >_2,000 sf of new plus replaced impervious No surface or >-7,000 sf of land disturbing activity? Yes Does the project have the characteristics of one or more of the following categories of projects (see more detailed threshold language on p. 1-15)? 1. Projects containing or adjacent to a flood, erosion, or steep slope hazard area; or projects within a Critical Drainage Area or Landslide Hazard Drainage Area. 2. Projects proposing to construct or modify a drainage pipe/ditch that is 12" or larger or receives runoff from a 12" or larger drainage pipe/ditch. 3. Redevelopment projects proposing >_$100,000 in improvements to an existing high -use site. No j Reassess whether drainage review is required per Section 1.1.1 (p. 1-9). Is the project an Urban Planned Development (UPD), OR does it result in —:50 acres of new impervious surface within a subbasin or No multiple subbasins that are hydraulically connected, OR does it have a project site >_50 acres within a critical aquifer recharge area? Yes Yes # TARGETED DRAINAGE REVIEW Section 1.1.2.2 FULL DRAINAGE REVIEW Section 1.1.2.4 LARGE PROJECT DRAINAGE REVIEW Section 1.1.2.5 4/24/2016 2016 Surface Water Design Manual 1-14 L 1.2 DRAINAGE REVIEW TYPES AND REQUIREMENTS TABLE 1.ocharacteristicsof REQUIREMENTS APPLIED UNDER EACH DRAINAGE REVIEW TYPE family residential projects and agricultural projects that result in ?2,000 sf of new plus ed impervious surface or ?7,000 sf of land disturbing activity but do not exceed the new plus Simplified d PGIS, new PGPS, and new pervious surface thresholds specified in Sec. 1.1.2.1; OR gricuitural project that qualifies for the "Impervious Surface Percentage Exemption For Agricultural s". family residential projects and agricultural projects that result in >2,000 sf of new plus Directed ed impervious surface or >_7,000 sf of land disturbing activity that are not subject to Simplified e Review or Large Project Drainage Review s that are not subject to Directed, Full or Large Project Drainage Review, AND have characteristics of one or more of the following categories of projects: 1, Projects containing or adjacent to a flood, erosion, or steep slope hazard area; projects within a Targeted Critical Drainage Area or Landslide Hazard Drainage Area. 2. Projects that construct or modify a drainage pipelditch that is 12" or larger or receive runoff from a 12" or larger drainage pipe/ditch. 3. Redevelopment projects with ?$100,000 in improvements to a high -use site.") All projects that result in >_2,000 sf of new plus replaced impervious surface or>7,000 sf of land Full disturbing activity but are not subject to Simplified Drainage Review, Directed Drainage Review, OR Large Project Drainage Review. Large Project UPDs, OR projects that result in >50 acres of new impervious within a sub -basin or multiple sub- basins that are hydraulically connected, OR project sites >_50 acres within a critical aquifer recharge area. DRAINAGE REVIEW TYPE Simplified Directed Tar eted Full Large SIMPLIFIED DRAINAGE Categ 1 Categ 2 Categ 3 Project REQUIREMENTS SEE NOTE 4 CORE REQUIREMENT #1 ✓(4) (23) Dischar a at Natural Location '*(2) / CORE REQUIREMENT #2 /(a) (2,3) v Offsite Analysis v ✓ *(2) ✓(3) /(3) �(3) CORE REQUIREMENT #3 /(a) (2,3) Flow Control �r *(2) ✓(3) /(3) CORE REQUIREMENT #4 V/(4) V Conveyance 5 stem (2.3) *(2) CORE REQUIREMENT #5 �(4) Erosion & Sediment Control ✓ (2'3) CORE REQUIREMENT #6 Maintenance & D erations (2'3) *(2) ✓ / CORE REQUIREMENT #7 �(4) (2 3) * (3) �/ Financial Guarantees & Liabili (2) ✓(3) ✓(3) /(3) CORE REQUIREMENT #8 V/(4) v Water Quaiit (2'3) *(2) ✓(3) �(3) CORE REQUIREMENT #9 Flow /(4) Control BMPs */ SPECIAL REQUIREMENT #1 /(4) Other Ado ted Re uirements �/ (2'3) �(3) /(3) SPECIAL REQUIREMENT #2 /(4) Floyd Hazard Area Delineation �/ (2'3) �(3) ✓(3) �(3) SPECIAL REQUIREMENT #3 /(a) / (2,3) Flood Protection Facilities �/ 0 V/(3) /(g) V/(3) SPECIAL REQUIREMENT #4 /(4) Source Contra! �/ (2'3) /(3) ✓(3) /(3) �(3) ✓(3) OPECIAL CanroIREQUIREMENT #5 ✓(a) / (2,3) (3) (3) M Category 3 projects installing oil controls that construct or modify a 12-inch pipe/ditch are also Category 2 projects- (2) May be applied by DPER based on project or site -specific conditions. Documentation of compliance required. (3) These requirements have exemptions or thresholds that may preclude or limit their application to a specific project. (4) A proposed project subject to Simplified Drainage Review that complies with the Simplified drainage requirements detailed in would apply to the project if it is subject to Targeted Drainage Review as specified in Section 1,1.2,2. Appendix C is presumed to comply with all the core and special requirements in Sections 1.2 and 1.3 except those requirements that 2016 Surface Water Design Manual l -15 4/24/2016 3.0 OFF -SITE ANALYSIS TASK 1 STUDY AREA DEFINITION AND MAPS The proposed Fuel Facility Expansion will be constructed on the western parcel of the Costco subject property, at the comer of Enchanted Parkway and South 352nd Street. The subject property is approximately 12.5 acres in size and the proposed improvements will be limited to 0.32 acres of disturbed area. Please see Figure 2, Vicinity Map, for a graphical description of the exact site location. The existing site slopes from East to West, with moderate grades ranging from 1 to 2 percent.The site is completely developed and is 90 percent asphalt/concrete pavement. Existing conditions are further described in Section 4.0 Part A. For a complete study, please see the Level 1 Downstream Analysis included with this submittal. Upstream Drainage Analysis The site receives little to no flow from adjacent properties. The Fuel Facility Parcel and the Warehouse Parcel are part of the same threshold discharge area. The area of the Fuel Facility fueling pad, however, is completely isolated and discharges to the Sanitary Sewer system. Please refer to Figure 3 for a representation of the Basin areas for the site.. Downstream Drainage Analysis (Level 1) Task 1 In the pre -developed condition, stormwater runoff from the site is collected by the on -site conveyance, detention and flow control system. The storm water runoff is then discharged into the City system along Enchanted Parkway. The downstream route, except for the outfall location, has not been modified since the original construction as shown on the pages from the 1988 Design Plans that have been included in this report. Per review of historical aerial photos, the ultimate outfall into a public swale along Pacific Highway, circa 1989, was maintained until approximately 2016. Per review of the City of Federal Way storm GIS, the storwmater runoff from this location was modified to be conveyed through the public trunk line along 352nd and discharged into the 35th street pond (approximately 0.5 miles downstream from the project site). Task 2 The City of Federal Way has provided records of the Service Requests in the vicinity of the project site. After review of the information provided, we have determined that the majority of the documented flooding or erosion problems were not caused by runoff from the project site and have been resolved or closed. The only documented concern that may be impacted by runoff from the project site is located at the original outfall location (Service Request ID: S-0612-003). At this location (35100 Pacific Highway), turbid stormwater runoff was observed in June 2012. The violation was closed in May 2015. Please refer to the documentation included in this section. Task 3 The City of Federal Way has determined that field inspection of the downstream drainage is not necessary at this time as the drainage route between the site and the outfall is part of the City underground drainage system. 6076.024.docx In the developed condition, stormwater runoff will increase by less than 0.15 cfs for the 15-min 100- year time step, will not modify the existing on -site conveyance system, and will be implementing new water quality treatment. There are no documented concerns from the site in the existing condition and the improvements will reduce the impacts to the drainage system. 6076.024.docx r. a HW `OrAA O U U O U ca wca 0 U 0 o cl w ° O� M V� O O O M � � 612 911 o) U 0\ v] 1 00 rA N M C, C� U GOD a b N A O Q- U Q U 2 cd Q DD � O to 00 M o a rA M "C3 i M M O O Uhl W 0 'C Ml r. 0 a U U 1-4 44 O N � O � O � C/] � O W Hwz b Y b � co cz 0 COD L� COD U U 4r U _o O O a)" U° N 3 0°� •'" y o 4-4 � a� a� 3 o "C 4, 3 ° U 3 O O �, U �•� O o o U 3 U o >, O 'n �. �. 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(u000000000 0� oUcn o Cd > nCd .�d 0`4bo>� � o p� 00 a) = o 4. 00 0 N O N O O O ti C/] 00 � O a a q � � M z O y C M Chi O cli O � � 2 Cd Q Go i w 0 0 w EWE O Cli 00 b N M rA rA O N 00 00 O O O b ti 00O z .b Q N � M �. O Ln d M O Cl) -±' 5 O ON Q w U C/� 'O bD n oo 0� 40) o Cb o 0Lzo 0 > ccn Cd CZo� �ry,00 42 O OCIO uI 4 5 cz tw= U O E U O O bA U to�C. O N c� �b �;b•�M O . 33t� fia a, 0 AG is n n 2 A rA 3 0 cz cl to O 3 En 3�nin Cl 4� .d 0 $ a' O N Mcn y +U+ • O O Eb cC 0Ln 3ar.aGn 0C�. a� o cz 0 0 cd o U U � o /� U a o y U V CA CZ a)r. Gn 4- U N 0 QQv��b �a w�S G N N M W O y,, O M > b�A � a 0 U a � o � b � �o M U a� 0 U z 3 �O r, -d rx oA � COD „ b � N M 4-4 = 0 O N 00 —4 R: C/l C/] a N � M M M � O O � U O N z 19 a V t, 'O 'C M 3 a b N U W kn N Nt kn M 't7 y a � 0000 a� o o C, O o C C con M cM O N A N cd A N bA bA O O O = O O m O 4mi co') W q m b U 0 00 --0 O 1:4 ,� cn bi) (L) > 3 � O -d �o O N 0 N N W O N U bD cd a W c _G Z m L CD m c N Q N b 1-4 00 ti 0 v] q o� 00 00 O O N N O M N 0 �ON N M M M 0 rn 0 CITY OF Federal June 14, 2012 Mr. Russell Lloyd R.L. Clearing and Excavating 1741 S 356" St. Federal Way, WA 98003 CITY HALL 33325 8th Avenue South Way Mailing Address: PO Box 9718 Federal Way, WA 98063-9718 (253) 835-7000 www. cityoffederalway. com Re: Third Notice of Violation, Prohibited Stormwater Discharge Case Number 11-104763-000-00-VO Dear Mr. Lloyd, VIA CERTIFIED MAIL #7009 3410 0000 8928 8720 On June 7, 2012, Surface Water Management (SWM) personnel documented prohibited stormwater discharges originating from your facility, 1741 S 356`h St., (Parcel Number 282104 9178). Observations indicate that highly turbid stormwater was being discharged during a rain event into the City's municipal separate stormwater system (MS4) at a concentration of 486 NTU. The June 7 discharge constitutes non-compliance with the Third Notice of Violation (Case Number 11-104763-000- 00-VO) issued on May 9, 2012. As stated in the May 9, 2012 Notice of Violation, the discharge of contaminants to the stormwater and/or surface water must be immediately controlled at the site and a monetary penalty of $300.00 per day may be assessed at this time. Penalties will cease to accrue only when the violation is corrected. Please contact me as soon as possible so that we can meet to discuss the latest monetary penalties, the current conditions at the site and your plans to control the contaminated stormwater runoff. I may be reached at daniel.sinitii(c eitynffederalway Porn or (253) 835-2756. Sincerely, Dan Smith Water Quality Coordinator DS:dI cc: Mr. Ken Miller, Deputy Director Public Works Mr. Will Appleton, P.E., SWM Manager Mr. Mike Brewer, SWM Inspector Mr. Peter Beckwith, Assistant City Attorney Day File k:�swm\water quality\enforcement\novs\2012 nov\rl clearing nov I 1-104763Nr1 clearing 6-14.12 let.doc PAC HWY m n v 0 m co D r 2 � cn m Ln o 0 00 0 4.0 FLOW CONTROL AND WATER QUALITY FACILITY ANALYSIS AND DESIGN 4.1 Existing Site Hydrology The proposed Fuel Facility Expansion development is located at 35100 Enchanted Parkway South, within a portion of Section 21, Township 21 North, Range 4 East, Willamette Meridian, City of Federal Way, King County, Washington. The project is proposed on a portion of existing subject property that totals 12.50 acres. Please see Figure 2, Vicinity Map, for a graphical description of the exact site location. The existing site generally slopes from east to west with slopes ranging from 1 to 10 percent with a total relief of 25 feet across both parcels. The site is completely developed, with the majority of the site covered in asphalt and concrete pavement with a scattering of landscape and planter islands. As described in section 3.0, stormwater runoff from the entire property is discharged at the easternmost portion of the site at Enchanted Parkway. See Figure 3 for basin delineations. 4.2 Developed Site Hydrology The project proposes the expansion of the existing fuel facility with four (4) new multi- product dispensers to the north into the stacking area. The expansion will require the demolition of the existing controller enclosure. The new enclosure, which will require rerouting of the existing communications and power lines, will be rebuilt northwest of the expanded canopy in an existing landscape planter. The project is exempt from Core Requirement No. 3, but will drain to the existing flow control infrastructure. Enhanced water quality treatment will be provided with the installation of Modular Wetland devices. All impervious area of both Costco parcels will be treated with Modular Wetlands, per the Federal Way addendum to the 2016 KCSWDM. Source control (High Use) is already provided for the entire site via an Oil/Water Separator installed immediately prior to the final detention vault. A separate Oil/Water separator for the fuel facility exists on -site, and drainage from the expanded under -canopy will be treated with that Oil/Water Separator prior to entering the Sanitary Sewer system. The proposed improvements will result in approximately 0.36 acres of new or replaced impervious surfaces. Theses surfaces will all be considered pollution generating, with the exception of the roof runoff from the fuel facility canopy. See Figure 3 for Basin delineations. 4.3 Performance Standards The project is subject to Conservation (Level 2) Flow Control, Enhanced Basic Water Quality treatment, Flow Control BMPs and high use (oil control) site provisions. High use, source control, and water quality have been designed pursuant to the 2016 KCSWDM. 4.4 Flow Control System Basic Flow Control requirements have been met with the existing on -site detention vaults that provide runoff control for both Costco parcels, including the Fuel Facility area. No additional detention will be provided. The project falls within Conservation Flow Control Areas and meets Exception 2, where no more than 0.15 cfs increase (when using a 15- 6076.024.docx minute time step) in runoff is generated from the existing conditions 100 year peak flow. The target surfaces for the proposed project include the pollution generating impervious surfaces of the fuel facility only. The remainder of the site qualifies as existing impervious surface added since January 8, 2001 that was mitigated with a series of approved flow control facilities. The target surfaces were modeled using Western Washington Hydrology Model (WWHM). Per the KCSWDM, the predeveloped condition was modeled as forested and the developed condition was modeled as un-mitigated impervious.. A copy of the WWHM report included in this section demonstrates that the increase in stormwater runoff is 0.1447 cfs and qualifies the project for Exception 2, as the difference is less than a 0.15 cfs increase from the existing condition for the 15-min time step of the 100-year storm event. The Target impervious surfaces used for the model were calculated as a sub -set of our total disturbed impervious area. While the project is disturbing an imperious area of 0.367 acres in total, only 0.191 acres of that area was considered target impenrious surface and used in our model. Namely, the disturbed impervious area under the existing canopy and tank slab were not included in our analysis. Per the KCSWDM's definition of replaced impervious surface, work required to trench new utilities and work required for general maintenance of existing facilities is not be counted as replaced imperious surface. The purpose for replacing much of the exiting fuel and tank slab is to maintain ageing fuel piping as well as trench conduit to the relocated controller enclosure, and as such, that area has not been considered Target Imperious Surface. Please see Figure 5 for a visual representation of the areas we are considering Target Impervious Surface. In addition to Level 2 flow control, flow control BMPs are required for the scope of the Fuel Expansions disturbed area. The expansion includes 0.185 acres of new and replaced impervious area added after 2001, and does not include disturbed areas required for utility trenching and maintenance, which do not meet the manuals definition of replaced impervious surfaces. The rest of the site was developed prior to 2001 and will remain undisturbed, and is not subject to Flow Control BMPs. We have determined that implementation of Flow Control BMPs is infeasible for this site. The Large trot BMP Requirements have been assessed and found infeasible for the following reasons; 1. Full Dispersion —The site does not have adequate native vegetated surface to disperse to. 2. Full infiltration of roof runoff — The existing site is fully developed and existing roof runoff is hard -lined underground into the on -site conveyance system. The system cannot be modified. 3. Target surfaces to be mitigated by Full Infiltration, Limited Infiltration, Bioretention, or Permeable Pavement — Full and Limited Infiltraion is not suitable for this site, oer the Geotechnical Report prepared by Kleinfelder dated October 16, 2018. As detailed in Section 6.1 of the report, the site soils are not conducive to infiltration, and infiltration facilities are not recommended. Altematives to infiltration, such as bioretention with perforated underdrains, are infeasible due to existing parking constraints. The parking requirements within the Development Agreement governing the shopping center where the project is located does not allow for the loss of any parking, thus triggering infeasibility criteria number 5 for "lack of usable space for bioretention facilities at re- development sites". The final altemative for this tier of BMP requirements is the implementation of Permeable Pavement. Permeable pavement is infeasible due to the steep slopes of the site and the hardpan nature of the subsurface soils; any stormwater collected would encounter the hardpan soils and surcharge back through the pavement to pool in the parking area or appear lower on the property by saturating landscaped areas or seeping out of the retaining wall along the property frontage. 6076.024.docx 4. Target surfaces to be mitigated by Basic Dispersion — There are no adequate vegetated areas that can provide the required vegetated flowpaths for dispersion devices. 5. Reduced Impervious Surface Credit or Native Growth Retention Credit —The site does not qualify for the Reduced Impervious Surface Credit as the site/lot is greater than the 250,000 sf cap. The site does not qualify for the Native Growth Retention Credit as there is not enough landscaping area to meet the 3.5 ratio of vegetated surface to target impervious surface and the landscaping area that is available on -site does not meet the species specifications necessary to be converted to "native vegetated landscape" per KCSWM section C.2.1.8. 6. New Pervious Surfaces — there are no new pervious surfaces being proposed as part of this project. Perforated Pipe Connection — The existing roof downspouts are hard -lined underground into the on -site conveyance system and cannot be modified to incorporate a perforated pipe connection. Additionally, perforated pipe connections are the opportunity for infiltration of runoff being conveyed from an impervious surface and infiltration is not recommended on this site, per the Geotechnical Engineer's recommendations. 4.5 Water Quality System The 2017 Federal Way Addendum to the 2016 KCSWDM dictates that all redevelopment projects must bring the entire existing property up to current water quality standards if they disturb or replace more than 5,000 SF of pollution generating impervious surface area. This requirement means that the entire 12.5 acre Costco subject property will need to provide enhanced treatment. The site is proposed to be broken up into 7 drainage sub -areas that can be treated by eight (8) Modular Wetland devices. Six of the drainage sub -areas propose replacement of existing catch basin inlets with the Modular Wetland structures. One sub -area proposes the installation of two Modular Wetland structures within a landscape area to provide treatment for the area upstream. Vault sizes for the Modular Wetland units will range from 5x9 to 9x21 feet. These units have been sized to bypass flows above the peak 100-year storm. Runoff for the expanded canopy is considered clean, and will be connected to the existing roof drains prior to discharging directly to the existing detention system. The canopy will be sized to fully cover the fueling area. 6076.024.docx Figure 7 Draft WWHM WWHM2012 PROJECT REPOR General Model Information Project Name: 6076-WWHM Site Name: Site Address: City: Report Date: 8/7/2019 Gage: Seatac Data Start: 1948/10/01 Data End: 2009/09/30 Timestep: 15 Minute Precip Scale: 1.00 Version Date: 2016/02/25 Version: 4.2.12 POC Thresholds Low Flow Threshold for POC1: 50 Percent of the 2 Year High Flow Threshold for POD ��60' Year 6076-WWHM 8/7/2019 11:21:39 AM Page 2 Landuse Basin Data Predeveloped Land Use Basin 1 Bypass: No GroundWater: No Pervious Land Use acre A B, Forest, Mod 0.191 Pervious Total 0.191 Impervious Land Use acre Impervious Total 0 Basin Total 0.191 Element Flows To: Surface Interflow Groundwater Trapezoidal Pond 1 Trapezoidal Pored' 1 . 6076-WWHM 8/7/2019 11:21:39 AM Page 3 Mitigated Land Use Basin 1 Bypass: No GroundWater: No Pervious Land Use acre Pervious Total p Impervious Land Use acre PARKING FLAT 0.191 Impervious Total 0.191 Basin Total 0.191 Element Flows To: Surface Interflow Groundwater Trapezoidal Pond 1 Trapezoidal Pond A- 6076-WWHM 8/7/2019 11:21:39 AM Page 4 - Cumulative Ibability x x x x x x xxx LL x 701 0,0001 t _...__1.A_L_L+++ + + + + 0,5 1 2 5 10 20 30 50 70 :1 91 95 98 9. 99 Stream Protection Duration LID Duration Flow Frequency water Quality Mydrograph Wetland I nput Volume LI D R epork P ech D urakion R eeharge Predeveloped Recharge Mitigated Analyze dataaets Compact WD�j Delete Selected 1 PUYALLU P DAI LY EVAP W/J E N S E N •HAI S 2 se.atac 15 minute � arm- ■- 1 r rHaftr� W 001 PO C 1 Mitigated flow 1000 T Fapezcidal Pond 1 ALL U U T LE T S M itigaked _. 1001 Trapezoidal Pond 1 STAGE Mitigated 1002 T rapezoidal Fond 1 ALL O U T LE T S. Predeveloped -- - All D akaseks Flo S rage Preeip E yap �U 1 L - Flood Frequency Method * Leg Pearson Type III 17E * Welbull (' Dunnane r 13 ringcrten Flow Frequency Flow(cfs) 0501 2 Year = 0.0000 5 Year 0.0000 10 Year = 0.0000 25 Year 0.0001 50 Year = 0.0001 100 Year = 0.0001 Annual Peaks 1949 1950 1951 1952 1953 1954 19- - 1956 1957 1 9.5 8 1959 196.0 1961 1962 1969 1964 1965 1966 1967 1966 1969 1970 1971 1972 1979 1974 1975 1976 0.0000 0.0000 0.0000 0e!I01e0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0:0000 0.0000 0.0000 0.0000 0.0000 0.0001 0.0000 0.0000 0.0000 0.0000 0701 0.0720 0.0920 0.1050 0.1219 0.13,48 0.1481 0.0943 0.1019 0.0524 0.0566 0.0 5 9`2 0.0671 0.0661 0.0749 0.0605 0.0617 0.0605 0.0640 0.0550 0.0620 0.0600 0.0772 0.0516 0.0990 0.1011 0.0709 C.0670 0.0909 0.0035 0,0506 0.0730 0.0850 0.0572 A 10 M a E WaJmaR ScperceiAer � I � I Jackson Hewitt Tax _ o Service ILLJ H � 0 J d !{t1 $}til7 frM� & swr s k"I Federicd --- S 3461 h St S 348th St �s Ale ,14 $eatti<e Children's South Clirarr 14 f, Ohvr Garden SITE . rf, N ; ` cGsko a1 �- O 352nd St S S o 3S2r,d t cr. x x N I to U a >m > The information included on this graphic representation has been compiled from a variety or sources and is mAjeci to Grange v umc not" Kldlnfelder rusakee w representations or warranlics. wpross a implied, as to accuracy. compFoloness• omauneks- or rrgha to ft urea of auch ny Inrp[rypn. TV -is document is is" kttarWod ter IN use as a land survey product nor is it dee,gned or intendl:d as a Wnslluelien desil(In document The use or misuse of the nformolmr, contained on this graphic UO ropregemadan is al the sole risk of the parry using or misusing the information. U w PROJECT NO. 20192016 VICINITY MAP FIGURE DRAWN BY: BRC JCL EINFEL iD�"R' CHECKED BY: MBB COSTCO FUEL FACILITY EXPANSION Bright People. Right Solutions. DATE: 9/25/2018 FL�_ _ 35100 ENCHANTED PARKWAY S REVISED: FEDERAL WAY, WASHINGTON 98003 CJ PAGE: 1 Of 1 5.0 CONVEYANCE SYSTEM ANALYSIS AND DESIGN The project proposes a new conveyance system for the expanded canopy and regraded entrance that will connect to the existing on -site conveyance system. Conveyance pipes will be sized in order to convey the peak 100-year storm flow event according to the 2016 KCSWDM guidelines. Conveyance calculations will be included in the Final TIR. 6076.024.docx 6.0 SPECIAL REPORTS AND STUDIES The following special reports and studies are included: 6.1 Geotechnical Engineering Report prepared by Kleinfelder, Inc., dated October 16, 2018. 6.2 Technical Information Report for the Proposed Costco Gasoline Facility prepared by Barghasuen Consulting Engineers, Inc. dated November 19, 2001 6076.024.docx (OK�LlNrEL DER Bright People. Right Solutions. October 16, 2018 Kleinfelder Project No.: 20192016.001 A Mrs. Kim Katz Director of Real Estate Development Costco Wholesale 999 Lake Drive Issaquah, WA 98027 Subject: Geotechnical Engineering Report Proposed Gas Expansion Costco Wholesale Warehouse No. 61 35100 Enchanted Parkway South Federal Way, Washington 98003 CW# 18-0442 Dear Mrs. Katz: This letter transmits one electronic copy (portable document format) of our geotechnical engineering report for the proposed gas expansion project at Costco Wholesale Warehouse No. 61 located at 35100 Enchanted Parkway S in Federal Way, Washington. We appreciate the opportunity to provide geotechnical services to you on this project. Please contact the undersigned at (425) 636-7900 if you have any questions regarding this report, or if we can provide assistance with other aspects of the project. Sincerely, KLEINFELDER IMC•t� Marcus B. Byers, P.E., P.Eng Principal Geotechnical Engineer Senior Project Manager Attachment: October 16, 2018 Geotechnical Engineering Report 20192016.001AISEA18R85790 Page 1 of 1 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KLEINFELDER 14710 NE 87th Street, Suite 100, Redmond, WA 98052 p 1425.636.7900 f 1425.636.7901 ("KL INF-EL DAR \ - Bright People. Right Solutions. GEOTECHNICAL ENGINEERING REPORT PROPOSED GAS EXPANSION COSTCO WHOLESALE WAREHOUSE NO. 061 35100 ENCHANTED PKWY SOUTH FEDERAL WAY, WASHINGTON KLEINFELDER PROJECT NO. 20192016.001A OCTOBER 16, 2018 . k Copyright 2018 Kleinfelder All Rights Reserved ONLY THE CLIENT OR ITS DAIGNATED REPRESENTATIVES MAY USE THIS DOCUMENT AND ONLY FOR THE SPECIFIC PROJECT FOR WHICH THIS REPORT WAS PREPARED. 20192016.001AISEA18R85710 Page i of iv October 16, 2018 0 2018 Kleinfelder www.kleinfelder.com �KLEtNFEL OER Bright Poopk. Right Solutiam A Report Prepared for: Costco Wholesale 999 Lake Drive Issaquah, WA 98027 GEOTECHNICAL ENGINEERING REPORT PROPOSED GAS EXPANSION COSTCO WHOLESALE WAREHOUSE NO. 61 35100 ENCHANTED PARKWAY SOUTH FEDERAL WAY, WASHINGTON KLEINFELDER PROJECT # 20192016.001A Prepared by: 10-16-18 Ranjan Satyamurthy, Ph.D., PE., PMP Project Manager II Marcus B. Byers, PE, P.Eng Principal Geotechnical Engineer Senior Project Manager KLEINFELDER, INC. 14710 NE 87th Street, Suite 100 Redmond, WA 98052 Phone:425.636.7900 Fax: 425.636.7901 October 16, 2018 Kleinfelder Project No.: 20192016.001A 20192016.001A/SEA18R85710 Page ii of iv October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KL EINFEL OER Bright People Bight Satutiom TABLE OF CONTENTS Section Page EXECUTIVESUMMARY ............................................................................................................1 1 INTRODUCTION AND SCOPE.......................................................................................2 1.1 GENERAL............................................................................................................2 1.2 PROJECT DESCRIPTION............................................................................ 1.3 SCOPE OF SERVICES.......................................................................................2 2 SITE EXPLORATION AND LABORATORY TESTING...................................................5 2.1 SITE EXPLORATION..........................................................................................5 2.2 LABORATORY TESTS........................................................................................5 3 SITE CONDITIONS.........................................................................................................6 3.1 SURFACE CONDITIONS....................................................................................6 3.2 GENERAL GEOLOGIC CONDITIONS.................................................................6 3.3 PRIOR EXPLORATIONS.....................................................................................6 3.4 SOIL CONDITIONS.............................................................................................6 3.5 GROUNDWATER CONDITIONS.........................................................................7 4 DESIGN RECOMMENDATIONS.....................................................................................9 4.1 SEISMIC DESIGN RECOMMENDATIONS..........................................................9 4.1.1 2015 IBC Seismic Design Criteria.............................................................9 4.2 FOUNDATION SUPPORT.................................................................................10 4.2.1 General..................................................................................................10 4.2.2 Shallow Foundation Recommendations.................................................11 4.2.3 Drilled Pier Foundation Recommendations.............................................11 4.3 PAVEMENTS.....................................................................................................13 4.3.1 Costco Pavement Design Parameters....................................................13 4.3.2 Asphalt Concrete Pavement...................................................................13 4.3.3 Asphalt Performance Grade Binder........................................................14 4.3.4 Portland Cement Concrete Pavement....................................................14 4.3.5 Aggregate Base.....................................................................................15 4.3.6 Pavement Maintenance..........................................................................15 4.4 STORMWATER INFILTRATION........................................................................15 5 CONSTRUCTION RECOMMENDATIONS....................................................................16 5.1 GENERAL..........................................................................................................16 5.2 EARTHWORK...................................................................................................16 5.2.1 Excavation..............................................................................................16 5.2.2 Oversize Material...................................................................................16 5.2.3 Site Preparation and Pavement Subgrade..............................................16 5.2.4 Foundation Subgrade.............................................................................17 5.2.5 Weather Considerations.........................................................................17 5.3 FILL MATERIAL AND COMPACTION CRITERIA..............................................18 5.4 UTILITY TRENCHES AND EXCAVATIONS......................................................19 6 ADDITIONAL SERVICES.............................................................................................20 7 LIMITATIONS...............................................................................................................21 20192016.001A/SEA18R85710 Page iii of iv October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com FCLEINFEL OER Bright Rwple. Bight Soludom 8 REFERENCES..............................................................................................................24 TABLES 1 Recommended Flexible Pavement Sections 2 Recommended Minimum Asphalt Concrete Pavement Sections 3 Recommended Rigid Pavement Sections FIGURES 1 Vicinity Map 2 Site and Exploration Map APPENDICES A Field Exploration B Geotechnical Laboratory Testing C 1999 Kleinfelder Geotechnical Study 20192016.001A/SEA18R85710 Page iv of iv October 16, 2018 © 2018 Kleinfelder www.kIeinfelder.00m KL. EINFELOER Bright Pmple. Bight Solutions PROPOSED GAS EXPANSION COSTCO WHOLESALE WAREHOUSE NO. 061 35100 ENCHANTED PKWY S FEDERAL WAY, WASHINGTON EXECUTIVE SUMMARY This report presents the results of Kleinfelder's geotechnical engineering study for the proposed gas expansion project at Costco Wholesale Warehouse No. 061 located at 35100 Enchanted Parkway South in Federal Way, Washington. The expansion includes the addition of four new fuel islands, a canopy addition, and a new controller enclosure. Site soils generally consist of medium dense to very dense fill and native glacial till. Perched groundwater is anticipated at depths of about 12 to 20 feet seasonally, thought could potentially be shallower during the wet season. Based on the results of our field exploration and existing subsurface data, laboratory testing, and geotechnical analyses, the proposed additions may be supported on a shallow spread footings. Drilled piers, which we understand are often preferable for gas expansion projects due to a small disturbance footprint, are also suitable. However, the presence of dense to very dense glacial soils that contain cobbles and boulders may affect drilled pier installation. We do not recommend stormwater infiltration due to the dense / compact nature and high fines content of the onsite soils. 20192016.001A/SEA18R85710 Page 1 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KL EINFEL DER Wgh[People Right Solufiam 1 INTRODUCTION AND SCOPE 1.1 GENERAL This report presents the results of Kleinfelder's geotechnical engineering study for design and construction of the proposed expansion at Costco Wholesale Warehouse No. 61 in Federal Way, Washington. The site is located at 35100 Enchanted Parkway South, as shown on the Vicinity Map, Figure 1. Kleinfelder completed a geotechnical study for the original gas station development in 1999. While we have relied on prior explorations and information presented in our 1999 study, this report supersedes our prior study and should be referenced first for design and construction recommendations. 1.2 PROJECT DESCRIPTION Our understanding of the project is based on conversations with and information provided by Ms. Megan Palmer of Barghausen Consulting Engineers, Inc. (Barghausen) via email on August 20, 2018. Based on Site Plan DD-2 dated June 22, 2018, we understand the expansion includes addition of four new fuel islands, a canopy extension, and relocation of a controller structure. In addition, we understand three landscape areas are being evaluated for stormwater infiltration. Refer to the Site and Exploration Map, Figure 2, for a site plan and locations of the borings. 1.3 SCOPE OF SERVICES The scope of our geotechnical study consisted of a literature review, subsurface explorations, engineering evaluation and analysis, and preparation of this report. A description of our scope of services performed for the geotechnical portion of the project follows. Task 1: Background Data Review We reviewed the following information in developing our understanding of the propose project and site conditions: • Existing Site Plan drawing EX11 dated September 30, 2014 prepared by MG2; 20192016.001A/SEA18R85710 Page 2 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KL EINFEL DER Bright People. Bight Solutions I--' ■ As -Built Grading Plan Sheet C6 dated January 7, 2002, prepared by Barghausen ; • Geotechnical Investigation Costco Gasoline Retail Facility Warehouse #61, 35100 Enchanted Parkway South Federal Way, Washington prepared by Kleinfelder, dated December 10, 1999; • Phase I Environmental Site Assessment Proposed Costco Gasoline Station, 35100 Enchanted Parkway South Federal Way, Washington prepared by Kleinfelder, dated December 1, 1999; • Revised Geotechnical Engineering Report, Grease Interceptor, Costco Warehouse No.061, 35100 Enchanted Parkway, Federal Way, Washington 98003 prepared by Kleinfelder, dated February 14, 2014; • Costco Wholesale Development Requirements (CWDRs), Version 2016, dated September 19, 2016; and, • Readily -available aerial imagery for the site vicinity. Task 2: GPR Survey and Field Exploration Prior to commencement of the fieldwork, we notified the One -Call Utility Locate Service and subcontracted a private utility locate service to identify potential conflicts with subsurface structures. In addition, we subcontracted a Ground Penetrating Radar (GPR) survey to aid Barghausen in developing a map of existing utilities and fuel dispenser piping. A Barghausen representative documented conditions reported by the GPR subcontractor. Our 1999 geotechnical study included six borings. However, none were located in the area of the planned fuel island addition or the proposed infiltration areas. Therefore, we advanced five borings for this study. Boring B-1 was located in the area of the planned fuel island and canopy addition and four borings, designated B-2, MW-3, B-4, and B-5, were located within the potential infiltration areas. Exploration depths ranged from about 2.5 to 26.5 feet below existing grade. Borings were completed on September 7, 2018 and advanced using a rubber track -mounted drill rig. Additional site explorations details are provided in Section 2.1 and Figure 2 presents a site plan showing exploration locations. 20192016.001A/SEA18R85710 Page 3 of 24 October 16, 2018 © 2018 Kleinfelder wwwAleinfelder.c m KLEINFELOER Bright People. Right SAW — Task 3: Geotechnical Analyses We evaluated field and laboratory data from our 1999 geotechnical study, as well as our current study, along with site grades, layout, and anticipated structural loads to develop geotechnical recommendations for project design and construction. We evaluated feasible foundation systems, including constructability and compatibility constraints, pavements, and earthwork. Task 4: Geotechnical Retort This report summarizes our geotechnical study including field exploration, laboratory testing, and our findings, conclusions, and geotechnical recommendations for project design and construction. Our report includes the following items: • An Executive Summary; • Site Vicinity Map (Figure 1) and Site and Exploration Map (Figure 2); • Boring logs (Appendix A); • Laboratory test results (Appendix B); • A discussion of general site conditions; • A discussion of subsurface conditions as encountered in our borings, including the depth to groundwater; • Recommendations for seismic design parameters in accordance with the 2015 International Building Code (IBC); • Recommendations for shallow spread footing and drilled shaft foundation design, including minimum embedment depths, axial and lateral capacity, and settlement estimates; • A discussion of infiltration conditions; • Recommendations for site preparation, earthwork, temporary slope inclinations, fill placement, and compaction specifications, including the excavation characteristics of subsurface soil deposits; and, • Pavement design recommendations. 20192016.001A/SEA18R85710 Page 4 of 24 October 16, 2018 © 2018 Kleinfelder www.kliainfelder.com KL EINFEL OER Bright People. Bight Solutions 2 SITE EXPLORATION AND LABORATORY TESTING 2.1 SITE EXPLORATION The site exploration program was performed on September 7, 2018, under full-time observation of a Kleinfelder geologist and consisted of advancing five borings. Boring B-1 was located in the area of the planned fuel island and canopy addition and four borings, designated B-2, MW-3, B-4, and B-5, were located within the potential infiltration areas. A 2-inch diameter standpipe piezometer was installed in MW-3 to monitor groundwater levels. Holocene Drilling, operating under subcontract to Kleinfelder, advanced borings to depths of about 21.5 to 26.5 feet below the existing ground surface using a rubber track -mounted drill rig equipped with hollow -stem augers. Boring B-2 was abandoned at a depth of about 2.5 feet upon encountering what was interpreted to be a concrete slab. Boring B-4 was abandoned at a depth of about 4 feet after meeting refusal on an apparent cobble or boulder. The exploration locations presented on Figure 2 were estimated in the field by measuring distances from existing site features and should be considered approximate. Appendix A presents the borings logs. Logs of the borings completed by Kleinfelder in 1999 are presented with our 1999 geotechnical study in Appendix C. 2.2 LABORATORY TESTS Laboratory tests were performed on selected soil samples in general accordance with ASTM standards to establish index and engineering properties of the site soils. Tests included natural moisture content, sieve analyses, and percent fines. Laboratory test results are presented on the boring logs in Appendix A and / or on laboratory test reports included in Appendix B. 20192016.001A/SEA18R85710 Page 5 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KL EINFEL DER Bright Pwpte. flight Sok&om. W� 3 SITE CONDITIONS 3.1 SURFACE CONDITIONS The gas station expansion is located in the southwest corner of the Costco site, immediately northeast of the intersection of Enchanted Parkway South and South 352nd Street. The site is currently paved with concrete pavement around the fuel island canopy and asphalt around the surrounding drive aisles and parking spaces. A rockery retaining wall up to about 6 feet high supports portions of the south and west side of the gas station that are higher than the adjacent roads. 3.2 GENERAL GEOLOGIC CONDITIONS General geological information for the project area was obtained from the online Geologic Map of Washington (fortress.wa.gov/dnr/geology). The Geologic Map of Washington indicates surficial soils in the area consist of glacial till. Glacial till generally consists of a dense to very dense matrix of clay, silt, sand, and gravel. 3.3 PRIOR EXPLORATIONS Kleinfelder completed six borings in the vicinity of the gas station as part of our 1999 geotechnical study to support original facility development. Two borings (B-5 and 6) were completed in the UST area and four borings (B-1 through 4) were completed in the fuel island and canopy area, though the canopy layout was rotated after our exploration program. The prior borings encountered fill, alluvium, and glacial till soils. The fill were interpreted as being derived from on -site soils during earlier site grading. Groundwater was observed at depths ranging from 12 to 20 feet. Refer to Appendix C for logs of prior borings. 3.4 SOIL CONDITIONS Conditions encountered in our borings are similar to those described in our 1999 geotechnical study and the referenced geologic map. Our explorations encountered fill, presumably placed during the original site development, and underlying the fill, glacial till and interglacial deposits, 20192016.001A/SEA18R85710 Page 6 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KL EINFEL OER Bright People. Right SolutiaM which were identified as alluvium in the 1999 geotechnical study. Soils encountered are described in the order encountered and grouped into engineering units as follows: ■ Asphalt: Hot mix asphalt pavement was encountered in boring B-1. The asphalt was approximately two inches thick and underlain by an approximate six to 12-inch thick layer of base course material. • Top Soil: Approximately four inches of sod and topsoil were encountered in borings B-2, MW-3, B-4 and B-5, which were located in landscape areas. • Fill: A medium dense to very dense fill layer interpreted to consist of on -site soils placed during prior site development was encountered and extended to depths ranging from approximately 1.5 to 7.5 feet. The fill layer consisted primarily of silty sand with gravel and SPT blow counts ranged from 18 to more than 50 blows per foot. • Glacial Till: Glacial till, including weathered till, was observed underlying the upper fill in borings B-1, MW-3, and B-5 primarily consisted of dense to very dense sands with various amounts of silt and / or gravel and apparent cobbles and / or boulders. SPT blow counts ranged from 26 to more than 50 blows per foot, with an average of about 43 blows per foot. • Interglacial or Interglacial Fluvial Deposits_: Interglacial or Interglacial Fluvial Deposits were observed between layers of glacial till in borings MW-3 and B-5. These deposits primarily consisted of medium dense to very dense sands with various amounts of silt and / or gravel. SPT blow counts ranged between five and 20 blows per foot with an average of about 14 blows per foot. These interglacial or interglacial fluvial deposits were not readily visually discernable from the glacial till soils based on composition, but generally had lower blow counts. These deposits were identified as alluvium in our 1999 geotechnical study. 3.5 GROUNDWATER CONDITIONS Groundwater was not observed during or immediately after drilling and the piezometer installed in Boring MW-3 on September 7, 2018, did not indicate the presence of groundwater immediately after drilling. These explorations, which were completed at the end of summer, likely represent the driest conditions to occur seasonally. Our 1999 geotechnical study encountered seepage at depths ranging from about 12 to 20 feet and perched groundwater is anticipated to develop seasonally, particularly overlying the glacial till soils, and may be shallower. 20192016.001A/SEA18R85710 Page 7 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com ` JCL EINFEL OER Bright People. Right SoluHm¢ It should be noted that fluctuations in groundwater level could occur because of variations in rainfall, pumping from wells, utility trench locations and depths, and other factors that were not evident at the time of our investigation. If significant variations in groundwater levels are encountered during construction, it may be necessary for Kleinfelder to review our recommendations presented herein and adjust them as necessary. 20192016.001 A/SEA1 8R8571 0 Page 8 of 24 October 16, 2018 © 2018 Kleinfelder www.klelnfaider.com KL EINFEL OER Bright People Hight Solutions. 4 DESIGN RECOMMENDATIONS Based on the results of our review of prior reports for the site, field explorations, laboratory testing, and engineering analyses conducted during this study, it is our professional opinion that the proposed project is geotechnically feasible, provided the recommendations presented in this report are incorporated into the project design and construction. Our recommendations regarding the geotechnical aspects of design and construction of the project are presented in the following sections. 4.1 SEISMIC DESIGN RECOMMENDATIONS 4.1.1 2015 IBC Seismic Design Criteria Seismic design parameters were developed in accordance with the requirements of the 2015 edition of the International Building Code (IBC) and ASCE 7-10. Based on information obtained from the filed explorations, published geologic literature and maps, the Site Class is D, Stiff Soil, according to Section 1613.3.2 of 2015 IBC and Table 20.3-1 of ASCE 7-10. Approximate coordinates for the site are noted below. • Latitude: 47.28625°N • Longitude: 122.31313°W The Risk -Targeted Maximum Considered Earthquake (MCER) mapped spectral accelerations for 0.2 seconds and 1 second periods (Ss and S1) were estimated using Section 1613.3 of the 2015 IBC and the U.S. Geological Survey (USGS) web -based application (available at http://geohazards.usgs.gov/designmaps/us/application.php). The mapped acceleration values and associated soil amplification factors (Fa and Fv) based on the 2015 IBC and corresponding site modified spectral accelerations (SMS and SM1) and design spectral accelerations (SDS and SD1) are presented in Table 1. According to Section 1803.5.12 of the 2015 IBC, in the absence of a site -specific ground motion hazard analysis, the MCE geometric mean peak ground acceleration adjusted for Site Class effects (PGAm) can be determined based on Equation 11.8-1 in Section 11.8.3 of ASCE 7-10. 20192016.001A/SEA18R85710 Page 9 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com I xl CLEINFEL DER Bight People Right Solutiom 4.2 Table 1 Recommended Flexible Pavement Sections Design Parameter Symbol Recommended Value Site Class D Mapped spectral acceleration SS (g) 1.280 for short periods Mapped spectral acceleration Sf (g) 0.492 for a 1-second period Site Coefficient Fa 1.000 Site Coefficient F„ 1.508 MCE spectral response acceleration SMs (9) 1.280 for short periods MCE(1) spectral response acceleration SM, (g) 0.742 at 1-second period Design spectral response acceleration SOs (g) 0.853 (5% damped) at short periods Design spectral response acceleration SD1 (g) 0.495 (5% damped) at 1-second period MCE Peak Ground Acceleration PGAM (g) 0.500 (SM at T=0) FOUNDATION SUPPORT 4.2.1 General Based on the results of our field exploration and existing subsurface data, laboratory testing, and geotechnical analyses, the proposed additions may be supported on a shallow spread footings. Drilled piers, which we understand are often preferable for gas expansion projects due to a small disturbance footprint, are also suitable. However, the presence of dense to very dense glacial soils that contain cobbles and boulders may affect drilled pier installation. 20192016.001A/SEA18R85710 Page 10 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KL HINFEL DER Bright People. Right Soluh'om 4.2.2 Shallow Foundation Recommendations The canopy and may be supported directly on properly prepared existing structural fill or native soils. All footings should be founded at least 24 inches below the lowest adjacent finished exterior grade to provide frost protection. Footings may be sized for an allowable bearing pressure of 3,000 psf. A one-third increase may be used for transient wind or seismic loading conditions. Uplift loads on the canopy may be resisted by the weight of footing and overlying soil. We estimate that static settlement of foundations bearing on properly prepared subgrade will be on the order of '/z inch, or less. Lateral loads can be resisted by an ultimate passive pressure against buried portions of the footings equal to that generated by a fluid with an equivalent unit weight of 360 pcf in the structural footing backfill. Sliding resistance between subgrade soils and footings cast on subgrade can be evaluated using an ultimate coefficient of friction of 0.5. These values should include minimum factors of safety of 2 and 1.5 for evaluating allowable passive and sliding resistance, respectively. 4.2.3 Drilled Pier Foundation Recommendations Construction Considerations The proposed canopy may be supported on drilled piles, also known as cast -in -drilled hole (CIDH) piles, designed and constructed as recommended in this report. The performance and capacities of drilled piers can be influenced significantly by the selected construction methods and procedures used. Construction methods that create large zones of disturbance around the drilled piers can lead to lower than expected skin friction due to excessive stress relief around the pier length. The recommendations presented herein assume the contractor maintains stable excavation sidewalls at all times during construction, up through the completion of concrete placement. Drilling of piers should be accomplished using conventional heavy-duty drilling equipment designed for drilling in dense glacial till soils. Note that dense to very dense glacial till with potential cobbles and / or boulders was encountered. Difficult drilling conditions should be anticipated, along with potential for sloughing sand and perched groundwater layers. Cobble and boulders may cause drill refusal, or may roll into the excavation, making progress difficult. We recommend a minimum pier diameter of 42 inches for the purpose of aiding in cobble and boulder removal. 20192016.001A/SEA18R85710 Page 11 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com iCLE IVFEL DER Bng" People. Bight Solutions. Polymer slurry or temporary steel casing may be required to stabilize the sides of the excavation. Concrete for the piers should be placed immediately after the drilling of the hole is complete. The concrete should be pumped to the bottom using a tremie. Once concrete pumping is initiated, a minimum head of 5 feet of concrete above the bottom of the tremie should be established and maintained throughout the concrete placement to prevent contamination of the concrete by soil inclusions. If steel casing is used, the casing should be removed as the concrete is placed, but the casing should remain at least 2 feet below the level of the concrete. Drilled Pile Foundations Design Considerations We have developed design recommendations based on an assumed 42-inch-diameter piers with a minimum length of 15 feet and a maximum length of 25 feet. Kleinfelder should be notified if a different pier diameter or length will be used. Due to the relatively low vertical loads, we anticipate that lateral loads will control shaft length. Recommendations for the design drilled pier foundations are presented below. Axial and Lateral Capacity The downward axial capacity of drilled piers will be derived from skin friction and end bearing. The skin friction may be estimated based on an allowable uniform capacity of 125 pounds per square foot (psf). The end bearing may be estimated based on an allowable bearing pressure of 8,000 psf. The uplift capacity may be taken as one-half the downward allowable axial skin friction capacity. A one-third increase in the allowable capacities may be used for wind or seismic loads. Settlement of the proposed canopy supported on drilled piles, as recommended, is estimated to be less than'/z inch. For computing the lateral resistance, we recommend that an allowable lateral soil bearing pressure of 220 psf per foot of depth below grade, applied over the width of the pier. The allowable lateral soil bearing pressure should not exceed 2,500 psf. Since drilled piers are anticipated to behave as short, rigid piles, the allowable lateral soil bearing pressure may be increased by a factor of 2 for short-term lateral loads provided the structure will not be adversely affected by % inch of movement at the ground surface. 20192016.001A/SEA18R85710 Page 12 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com r� KL EINFEi. OER Bright P-ph,. Bight Solutions " 4.3 PAVEMENTS The following recommended pavement sections are based on the soil conditions encountered during our field exploration, our assumptions regarding interim grading and final site grades, limited laboratory testing, and Costco Wholesale Development Requirements (2016). 4.3.1 Costco Pavement Design Parameters We developed pavement design recommendations using traffic loading parameters provided in the Costco Wholesale Development Requirements and the following test data: • A 20-year pavement design life; • Light -duty pavements subject to 6,600 passenger vehicle trips per year (Traffic Index of 5.0); • Heavy-duty pavements subject to 30 tractor -trailer truck tips per day (Traffic Index of 7.0); • For asphalt concrete pavements: a design CBR-value of 10 or greater; and • For Portland Cement Concrete (PCC) Pavements: a 28-day flexural strength (modulus of rupture determined by the third -point method) of at least 650 pounds per square inch (psi); a modulus of subgrade reaction (k value) of 250 pounds per cubic inch (pci); and interlock at the control joints. 4.3.2 Asphalt Concrete Pavement We designed asphalt concrete pavement, also referred to as Hot Mix Asphalt (HMA), in accordance with the Asphalt Institute Manual Series (MS-1), Asphalt Pavements for Highways and Streets. HMA should conform to requirements of the Costco Wholesale Asphalt Pavement and Surfacing Specification Section 321216. Pavement lifts should not exceed three inches. Table 2 presents recommended minimum HMA pavement sections. Prior to placement of aggregate base, pavement subgrade should be prepared in accordance with Section 5.2.3. 20192016.001A/SEA18R85710 Page 13 of 24 October 16, 2018 © 2018 Kleinfelder www.kicinfelder.com 4 ►CLEINFEL DER Bright people. Night 5o/utiom Table 2 Recommended Minimum Asphalt Concrete Pavement Sections Traffic Use Traffic Index, TI Asphalt Concrete Aggregate Base (inches) (inches) Light -Duty Pavement 5.0 3.0 4.0 Heavy Duty Pavement 7.0 4.0 6.0 4.3.3 Asphalt Performance Grade Binder Performance Grade (PG) Binder of 58-16 may be used for the project. Binder selection was performed in accordance with Costco Wholesale Specifications Section 321216. Air temperature data for the three data stations nearest the project site was averaged and the PG was selected using the FHWA program LTTPBind Version 3.1. The high -end temperature rating was selected as having 98 percent reliability binder and the low -end temperature was selected to provide a reliability of at least 90 percent. 4.3.4 Portland Cement Concrete Pavement We designed PCC pavement in accordance with the Portland Cement Association (PCA) Thickness Design for Concrete Pavements (PCA, 1984). The design assumes that the PCC will have a 28-day flexural strength (modulus of rupture determined by the third -point method) of at least 650 pounds per square inch (psi). A design modulus of subgrade reaction (k value) of 250 pounds per cubic inch (pci) was assumed for the top of the compacted aggregate base. It was also assumed that aggregate interlock would be developed at the control joints. The pavement sections are based on a theoretical design life of 20 years. The recommended minimum PCC section is presented in Table 3 prior to placement of aggregate base, pavement subgrade should be prepared in accordance with Section 5.2.3. Table 3 Recommended Minimum PCC Pavement Section Traffic Use Traffic Index, TI PCC (inches) Aggregate Base (inches) Heavy Duty Pavement 7.0 7 I 6 20192016.001A/SEA18R85710 Page 14 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KLEINFELOER Bright People light Solutions. We recommend that PCC pavements be reinforced with a welded wire or an approved equivalent. The structural engineer should perform final reinforcement design. Longitudinal and transverse joint spacing should not exceed 12 feet and 15 feet, respectively. Joint details should conform to PCA guidelines. Expansion joints in concrete slabs should be sealed with petroleum resistant sealant to prevent minor releases from impacting subsurface soil. Concrete should consist of Type HS. 4.3.5 Aggregate Base Crushed surfacing should conform to the requirements of Section 9-03.9(3) Crushed Surfacing Top Course or Base Course of the WSDOT Standard Specifications and be compacted to a minimum of 95 percent relative compaction per ASTM D1557. 4.3.6 Pavement Maintenance Pavements, particularly in cold regions, undergo seasonal movement due to changes in temperature and subgrade moisture content. This movement tends to accelerate pavement deterioration, particularly at cold joints. As cold joints open and localized areas of cracking develop, surface water infiltrates into the pavement section, exacerbating freeze -thaw action and softening subgrade. A crack sealing program should be performed annually to slow pavement deterioration. Any areas where surface water stands on the surface should be remediated. Over time as cracking becomes more pronounced, a slurry seal coat should be applied. 4.4 STORMWATER INFILTRATION We understand stormwater infiltration is being considered for the grass areas east of the existing gas station. Soils in this area consist of a compacted layer of fill and / or glacial till (hardpan) and a majority of the soils have fines contents in excess of 30 percent. Our 1999 geotechnical study noted that groundwater was perched on these layers. As a result, we do not believe that a facility can be constructed with more than 3 feet of separation between the wet season groundwater table. Furthermore, infiltration rates in the site soils, even when unsaturated, will be severely restricted by their dense / compact nature and high fines content. Therefore, we do not recommend stormwater to infiltration. 20192016.001A/SEA18R85710 Page 15 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KL EINFEL OCR Bright Pmple. Bight Solutiors 5 CONSTRUCTION RECOMMENDATIONS 5.1 GENERAL The following recommendations should be used by the contractor for construction of the project. 5.2 EARTHWORK Site preparation and earthwork operations should be performed in accordance with applicable codes, safety regulations and other local, province or federal specifications, and the recommendations included in this report. References to maximum dry unit weights are established in accordance with the latest version of ASTM Standard Test Method D1557 (modified Proctor). The earthwork operations should be observed and tested by a representative of geotechnical engineer. 5.2.1 Excavation Excavations will likely encounter some fill and dense glacial till soils with cobbles and boulders. Excavation of the on -site soils can generally be performed with conventional earthmoving equipment such as dozers and excavators, though large equipment, fresh ripping teeth, and / or narrow buckets may be required. In some areas, wet sands and perched groundwater may be encountered. These soils will tend to slough. 5.2.2 Oversize Material Oversized materials, such as construction debris, which may consist of pieces of concrete and / or rocks / cobbles should be anticipated in the fill materials. The contractor should consider this oversize material when selecting construction equipment and any oversize material larger than 3 inches in diameter should be removed and disposed of off -site. 5.2.3 Site Preparation and Pavement Subgrade Abandoned utilities, existing pavements, foundations, and other existing improvements within the proposed gas station areas should be removed and the excavation(s) backfilled with engineered 20192016.001A/SEA18R85710 Page 16 of 24 October 16, 2018 © 2018 Kleinfelder www.kIeinfeIder.com KL EI111FEL DER Rn'ght People Right Solutions fill. Debris produced by demolition operations, including wood, steel, piping, plastics, etc., should be separated and disposed of off -site. Existing utility pipelines or conduits that extend beyond the limits of the proposed construction and are to be abandoned in place, should be plugged with non -shrinking cement grout to prevent migration of soil and/or water. Demolition, disposal and grading operations should be observed and tested by a representative of Kleinfelder. Areas to receive fill should be stripped of all dry, loose and / or soft earth materials and unsuitable fill materials to the satisfaction of a representative of Kleinfelder. After the area has been stripped of soft earth materials and debris, the upper 12 inches of subgrade should be moisture conditioned and compacted to at least 95 percent of the modified Proctor maximum dry density. Following compaction, the exposed subgrade should be proof -rolled with heavy construction equipment (e.g. loader or smooth -drum roller) to disclose areas of soft and yielding material. Where soft and yielding material is observed, it should be over -excavated and replaced with granular structural fill. Area that are excessively soft or yielding may require use of a separation geotextile between the subgrade and structural fill. 5.2.4 Foundation Subgrade Footing subgrade soils should be evaluated by a Kleinfelder representative following excavation to footing subgrade elevation. Probing, and/or potholing should be performed with the assistance of the contractor. It should be assumed that all footing subgrade will require compaction with an excavator -mounted vibratory hoepack. The contractor should submit samples of earthwork materials proposed for use during construction to the geotechnical engineer for evaluation and approval prior to use. Samples should be submitted at least one week prior to their use to allow the contractor to identify alternative sources if the material proves unsatisfactory. Structural fill should be moisture conditioned to within 2 percent of the optimum moisture content prior to compaction and should be placed in maximum 12-inch thick lifts. All structural fill should be compacted to a dense and unyielding condition and to a minimum of 95 percent of the modified Proctor maximum dry density as determined per ASTM D1557. 5.2.5 Weather Considerations We recommend that earthwork be performed during dry periods of weather to the greatest extent practical. During wet weather, the contractor should take measures to protect the exposed 20192016.001A/SEA18R85710 Page 17 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KL EINFEL OER Bright Pmple. Night Solutions subgrade and limit construction traffic on the exposed subgrade. These measures could include, but are not limited to, placing a layer of crushed rock on exposed subgrade or covering the exposed subgrade with a plastic tarp. During construction, the site should be' graded so that surface water can drain readily away. Ponding of water in or near excavations should be avoided. Promptly pump out or otherwise remove water that accumulates in excavations or on subgrades, and allow these areas to dry out before resuming construction. Use berms, ditches, and similar means to prevent stormwater from entering work areas and to convey it off -site efficiently. Grading fill, structural fill, or other fill should not be placed on frosted or frozen ground, nor should frozen material be placed as fill. Frozen ground should be allowed to thaw or be completely removed prior to placement of fill. If earthwork is performed during the winter months when freezing is a factor, a good practice is to cover the compacted fill with a "blanket' of loose fill each evening to help prevent the compacted fill from freezing. Prior to commencement of fill placement operations the next morning, the loose fill blanket should be entirely removed and allowed to thaw before incorporating it into the fill. 5.3 FILL MATERIAL AND COMPACTION CRITERIA Material placed below structures or pavements should be considered structural fill. Structural fill should consist of well -graded granular material free of organics or other deleterious material and have a maximum particle size of three inches. Imported fill should conform to aggregate base or select sub -base requirements of Section 9-03.14(1) Gravel Borrow of the latest WSDOT Standard Specifications. Material that will be exposed to precipitation, or placed and compacted in wet weather should have the additional requirement that the fines content, material passing the US No. 200 sieve, be limited to 5 percent by weight based on the percentage passing the % inch sieve. The contractor should submit samples of earthwork materials proposed for use during construction to the geotechnical engineer for evaluation and approval prior to use. Samples should be submitted at least one week prior to their use to allow the contractor to identify alternative sources if the material proves unsatisfactory. Structural fill should be moisture conditioned to within 2 percent of the optimum moisture content prior to compaction and should be placed in maximum 8-inch thick lifts. All structural fill should 20192016.001A/SEA18R85710 Page 18 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KL EINFEL DER Bright People. Fight 5oWtiom be compacted to a dense and unyielding condition and to at least 95 percent of the modified Proctor maximum dry density as established per ASTM D1557. 5.4 UTILITY TRENCHES AND EXCAVATIONS The contractor should be responsible for the safety of personnel working in utility trenches. We recommend all utility trenches and excavations are supported in accordance with state and federal safety regulations. Trench and excavation back -fill should be placed and compacted as described in Section 5.3. Pipe bedding material should conform to the manufacturers' recommendations. Particular care should be taken to make sure bedding or fill material is properly compacted in place to provide adequate support to the pipe. Jetting or flooding is not a substitute for mechanical compaction and should not be allowed. 20192016.001 A/SEA1 8R8571 0 Page 19 of 24 October 16, 2018 © 2018 Kleinfelder wmv.kieirifefder.com FCLEINFELOER Y Bright P' Ple Blghtsolutlom 6 ADDITIONAL SERVICES The recommendations made in this report are based on the assumption that an adequate program of tests and observations will be made during construction to observe and document compliance with these recommendations. Testing and observations performed during construction should include, but not necessarily be limited to, the following: • Observations and testing during site preparation, earthwork, structural fill, and pavement section placement; • Footing subgrade / drilled pier observation; • Testing and inspection of concrete and structural steel; and • Consultation as may be required during construction. We further recommend that project plans and specifications be reviewed by us to evaluate compatibility with our conclusions and recommendations. 20192016.001A/SEA18R85710 Page 20 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com fCL EINFELOER Bright People Right Solutiam 7 LIMITATIONS This geotechnical study has been prepared for the exclusive use of Costco Wholesale and their agents for specific application to the proposed Costco Wholesale gas expansion in Federal Way, Washington. The findings, conclusions and recommendations presented in this report were prepared in accordance with generally accepted geotechnical engineering practice. No other warranty, express or implied, is made. The scope of services was limited to a background data review and the field exploration described in Section 2. It should be recognized that definition and evaluation of subsurface conditions are difficult. Judgments leading to conclusions and recommendations are generally made with incomplete knowledge of the subsurface conditions present due to the limitations of data from field studies. The conclusions of this assessment are based on our field exploration and laboratory testing programs, and engineering analyses. Kleinfelder offers various levels of investigative and engineering services to suit the varying needs of different clients. Although risk can never be eliminated, more detailed and extensive studies yield more information, which may help understand and manage the level of risk. Since detailed study and analysis involves greater expense, our clients participate in determining levels of service, which provide information for their purposes at acceptable levels of risk. The client and key members of the design team should discuss the issues covered in this report with Kleinfelder, so that the issues are understood and applied in a manner consistent with the owner's budget, tolerance of risk and expectations for future performance and maintenance. Recommendations contained in this report are based on our field observations and subsurface explorations, limited laboratory tests, and our present knowledge of the proposed construction. It is possible that soil or groundwater conditions could vary between or beyond the points explored. If soil or groundwater conditions are encountered during construction that differ from those described herein, the client is responsible for ensuring that Kleinfelder is notified immediately so that we may reevaluate the recommendations of this report. If the scope of the proposed construction, including the estimated Traffic Index or locations of the improvements, changes from that described in this report, the conclusions and recommendations contained in this report are not considered valid until the changes are reviewed, and the conclusions of this report are modified or approved in writing, by Kleinfelder. 20192016.001A/SEA18R85710 Page 21 of 24 October 16, 2018 © 2018 Kleinfelder www- _kle imf I r. com fCL EINFEL OER Bn'ght People, Night Solutions The scope of services for this subsurface exploration and geotechnical report did not include environmental assessments or evaluations regarding the presence or absence of wetlands or hazardous substances in the soil, surface water, or groundwater at this site. Kleinfelder cannot be responsible for interpretation by others of this report or the conditions encountered in the field. Kleinfelder must be retained so that all geotechnical aspects of construction will be monitored on a full-time basis by a representative from Kleinfelder, including site preparation, preparation of foundations, and placement of engineered fill and trench backfill. These services provide Kleinfelder the opportunity to observe the actual soil and groundwater conditions encountered during construction and to evaluate the applicability of the recommendations presented in this report to the site conditions. If Kleinfelder is not retained to provide these services, we will cease to be the engineer of record for this project and will assume no responsibility for any potential claim during or after construction on this project. If changed site conditions affect the recommendations presented herein, Kleinfelder must also be retained to perform a supplemental evaluation and to issue a revision to our original report. This report, and any future addenda or reports regarding this site, may be made available to bidders to supply them with only the data contained in the report regarding subsurface conditions and laboratory test results at the point and time noted. Bidders may not rely on interpretations, opinion, recommendations, or conclusions contained in the report. Because of the limited nature of any subsurface study, the contractor may encounter conditions during construction which differ from those presented in this report. In such event, the contractor should promptly notify the owner so that Kleinfelder's geotechnical engineer can be contacted to confirm those conditions. We recommend the contractor describe the nature and extent of the differing conditions in writing and that the construction contract include provisions for dealing with differing conditions. Contingency funds should be reserved for potential problems during earthwork and foundation construction. This report may be used only by the client and only for the purposes stated, within a reasonable time from its issuance, but in no event later than one year from the date of the report. Land use, site conditions (both on site and off site) or other factors may change over time, and additional work may be required with the passage of time. Any party, other than the client who wishes to use this report shall notify Kleinfelder of such intended use. Based on the intended use of this report and the nature of the new project, Kleinfelder may require that additional work be performed and that an updated report be issued. Non-compliance with any of these requirements by the client or anyone else will release Kleinfelder from any liability resulting from the use of this report 20192016.001A/SEA18R85710 Page 22 of 24 October 16, 2018 © 2018 Kleinfelder wwwAleinfelder.com KL EINFEL 0ER Blight People. Right SDIG'd a by any unauthorized party and the client agrees to defend, indemnify, and hold harmless Kleinfelder from any claims or liability associated with such unauthorized use or non-compliance. 20192016.001 A/SEA1 8R8571 0 Page 23 of 24 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com KLEINFELOER Bright itople. Bight Solut- 8 REFERENCES American Concrete Institute (ACI), 2011, Building Code Requirements for Structural Concrete (ACI 318-11) and Commentary. Costco Wholesale, 2016, Costco Wholesale Development Requirements, Version 2016, dated September 19, 2016 Portland Cement Association, 1988, Design and Control of Concrete Mixtures, Portland Cement Association, Skokie, Illinois. 20192016.001A/SEA18R85710 Page 24 of 24 October 16, 2018 © 2018 Kleinfelder www,klei_nfelder.comm FIGURES 20192016.001A/SEA18R85710 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com ( ( ( ( ( 0 10' 20, I 40' ( �f 6 The information included on this graphic representation has been compiled from a variety of sources and is subject to change without notice Kleinfelder makes no representalions or warranties, express or implied, - as to accuracy, completeness, timeliness, or rights to the use of such information This document is not intended for use as a land survey product nor is it designed or intended as a constmction design document The use or misuse of the information contained on this graphic representation is at the sole risk of the party using or misusing the information i I I CONTROLLER ENCLOSURE +,-•;•••k 1 E I r F ! B-2 I ' [ I I , I CANOPY E%PR+51ON 1 I I (2018) i• di .1� ®I 1 ! II I I I q I O I ! O 1 f Q I f © 1 I I LID, ! (1999) , I, p I°, 1 I n , f B-3 (1999) ! B-2 ►Q LEGEND BORING LOCATION (2018) j- MONITORING WELL LOCATION (2018) * BORING LOCATION (1999) dh M 999) '! ze• {o I x f I {I ' [ I MW-3 I i B-1 (2018) (2018) I I r 1, I r B-1 (2018) (1999) � R SOUTH 352ND STREET - KL EINFEL DER 9dghtPeopk.RightS lub— APPENDIX A FIELD EXPLORATION 20192016.001A/SEA18R85710 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com M a i Date Begin - End: 9/07/2018 Drilling Company: Holocene BORING LOG 131 Logged By: WS Lewis Drill Crew: K.Doyle Hor: Vert. Datum: Not Available Drilling Equipment: Diedrich D-50 Hammer Type - Drop: 140 Ib. Auto - 30 in. Plunge: -90 degrees Drilling Method: Hollow Stem Auger Weather: Partly cloudy Exploration Diameter: 8 in. O.D. FIELD EXPLORATION LABORATORY RESULTS rn Sty ? 'o a e o o n m Surface Condition: Pavement a� r a �ar o N d m m H W C C E J �c .� Z mrn CO ca L a L a a E R ra��— m > Z o n (n O -0 V E C t? m C ui y n �4 `0 �E o 2 (D Lithologic Description u� ogc m� oX W ? D rn �c U o a fn (L a ? Q tY ASPHALT: 2" PAVEMENT: gravel base Fill: BC=7 Silty SAND with Gravel (SM): fine to 11 medium -grained, sub -rounded, light gray, moist, 7 medium dense 5 Dark brown organics BC=7 10 12 Weathered Glacial Till: BC--7 Silty SAND with Gravel (SM): fine to 18 medium -grained, sub -rounded, gray, moist, very Rig chatter dense 10 BC=50/6" Hard drilling 15 Rig chatter Weathered Glacial Till: BC=12 Silty SAND with Gravel (SM): fine to 18 coarse -grained, grayish brown, moist, dense 17 20 becomes very dense SM 69 22 NP NP Rig chatter BC 15 13 50/6" refusal on apparent cobble or boulder 25 The boring was terminated at approximately 25 ft. GROUNDWATER LEVEL INFORMATION;, below ground surface. The boring was backfilled Groundwater was not observed during drilling or after with grout and patched at surface on September 07, completion. 2018. 30 PROJECTNO.: 20192016 BORING LOG B-1 BORING DRAWN BY: TC KL EINFEL DER CHECKED BY: IRS B-1 COSTCO FUEL FACILITY EXPANSION Bright People. Right Solutions. DATE: 9/12/2018 35100 ENCHANTED PARKWAYS FEDERAL WAY, WASHINGTON 98003 REVISED: PAGE: 1 of 1 c F- Y Q Date Begin - End: 9/07/2018 Drilling Company: Holocene BORING LOG 8-2 Logged By: WS Lewis Drill Crew: K.Doyle Hor: Vert. Datum: Not Available Drilling Equipment: Diedrich D-50 Hammer Type - Drop: 140 lb. Auto - 30 in. Plunge: -90 degrees Drilling Method: Hollow Stem Auger Weather: Partly cloudy Exploration Diameter: 8 in. O.D. FIELD EXPLORATION LABORATORY RESULTS Z - o rn Surface Condition: Grass N a m a O ID e a o O y c iL rn N I- m m a a2>z c c Uz m y o �EE " ux UEc w and Description oa t7 n o a a?Lithologic a TOPSOIL: 4" a { i Encountered concrete slab CONCRETE: concrete slab adjacent to vault in planter The boring was terminated at approximately 2.5 ft. GROUNDWATER LEVEL INFORMATION: below ground surface. The boring was backfilled Groundwater was not observed during drilling or after with auger cuttings on September 07, 2018. completion. 5 10 15 20 I 25 30 PROJECT NO.: 20192016 BORING LOG B-2 BORING DRAWN BY: TC f�CL E/NFEL DER CHECKED BY: RS B-2 COSTCO FUEL FACILITY EXPANSION Bright People. Right Solutions. DATE: 9/12/2018 35100 ENCHANTED PARKWAYS FEDERAL WAY, WASHINGTON 98003 REVISED: PAGE: 1 of 1 Date Begin - End: 9/07/2018 Drilling Company: Holocene BORING LOG 8-4 Logged By: WS Lewis Drill Crew: K.Doyle Hor: Vert. Datum: Not Avaitable Drilling Equipment: Diedrich D-50 Hammer Type -Drop: 140 Ib. Auto- 30 in. Plunge: -90 degrees Drilling Method: Hollow Stem Auger Weather: Partly doudy Exploration Diameter: 8 in. O.D. FIELD EXPLORATION LABORATORY RESULTS O Surface Condition: Grass F IBC IIn li o r a u 0O •--• o a OO Nxt N c c > a-6 E _ J Cca cn jZ O II rn O C w C C1 CnE rn V Z .2 p ca q .1 L) of ? U7 A O o r M a M a Q ?II a U N ¢a oE Description TOPSOIL 4"Lithologic Fill: Rig chatter Silty SAND with Gravel (SM): gray SILT with Organics (ML): brown. moist, stiff BC=7 Refusal on apparent cobble or . Glacial Till: 50/5" boulder Silty SAND with Gravel (SM): gray, moist very 5 dense GROUNDWATER L1=VE7_ INFORMATION: Groundwater was not observed during drilling or after The baring was terminated at approximately 4 ft. completion. below ground surface. The boring was backfilled with auger cuttings an September 07. 2018. 0 PROJECT NO.: 20192016 BORING LOG B-4 BORING DRAWN BY: TC ("KLEINFEL DER CHECKED BY: RS B-4 COSTCO FUEL FACILITY EXPANSION Bright People. Right Solutions. DATE: 9112018 35100 ENCHANTED PARKWAYS FEDERAL WAY, WASHINGTON 98003 Y REVISED: PAGE: 1 of 1 JI LU Uj Y Qi Date Begin - End: 9/07/2018 Drilling Company: Holocene _ BORING LOG B-5 Logged By: WS Lewis Drill Crew: K.Doyte Nor. -Vert. Daturn: Not Available Drilling Equipment: Diedrich D-50 Hammer Type -Drop: 1401b. Auto - 30 in. Plunge: -90 degrees Drilling Method: Hollow Stem Auger Weather: Partly cloudy Exploration Diameter: 8 in. O.D- FIELD EXPLORATION LABORATORY RESULTS a� Surface Condrtion: Grass C Q a a 'o a0i e a e 0 N m 5 T U 3 a N # E J T w L a ? a a U` F Z O O (n- C a) .0 C S C = .0 Z l0 a E (aNx" m `oT II U V E i c o y y u, n II E o C9 Lithologic Description ® a. a 9 of? 5 rn 3 U a a a? ¢ W " Rig chatter rFill rganics (ML): non -plastic, brown, mo€st. BC=5 Glacial Till: 25 Silty SAND with Gravel (SM). sub -rounded, light 25 gray, moist, very dense -1.5 5 BC=6 SM 68 32 NP NP 10 16 Rig chatter BC=16 50/6" pounding on cobbles 10 interglacial Fluvial Deposits BC--10 Silty SAND with Gravel (SM): fine to SM 81 43 NP NP coarse -grained, sub -rounded, gray, moist, medium 8 6 dense BC=11 10 10 15 , SILT with Sand (ML): fine-grained, gray, moist, BCC brown organics 2 3 P=1.5 BC=15 becomes very stiff 13 15 Glacial Till: P=1.0 SAND with Silt and Gravel (SPSM): fine to 20 -. medium -grained, gray, moist, medium dense BC--18 Piece of cobble stuck in becomes very dense 23 samplershoe 43 The boring was terminated at appro)dmateiy21.5 ti GROUNDWATER LEVEL INFORMATf N: below ground surface. The boring was backfilled Groundwater was not observed during driliing or after with auger cuttings and bentonile on September 07, completion. 2018. 25 30 PROJECTNO.: 20192016 BORING LOG B-5 BORING DRAWN BY: TC ("KLEINF-EL C)ER CHECKED BY: RS B-5 COSTCO FUEL FACILITY EXPANSION Bright People. Right Solutions. DATE: 9/12/2018 35100 ENCHANTED PARKWAYS FEDERAL WAY, WASHINGTON 98003 REVISED: - PAGE: 1 of 1 a 0 J J 0 a U) w t 0 z rr 0 m LLI Y J �i Lu Li Y Q Date Begin - End: 9/07/2018 Drilling Company: Holocene BORING LOG MW-3 Logged By: WS Lewis Drill Crew: K.Doyle Hor: Vert. Datum: Not Available Drilling Equipment: Diedrich D-50 Hammer Type - Drop: 140 lb. Auto - 30 in. Plunge: -90 degrees Drilling Method: Hollow Stem Auger Weather: Partly cloudy Exploration Diameter: 8 in. O.D. FIELD EXPLORATION LABORATORY RESULTS 0)E 0 Surface Condition: Grass n m a o o a o N _ a)m — w F y Z of 2 01 4t 07 E J c O t L a�� C >Z rn� ° j n y a YZ aa) arx m iuW U)i>, `00 2 m m Q ma ❑ C7 Lithologic Description � a c � ? ❑ U) U ❑ a a 5-? TOPSOIL: 4" — Flush -mount Fill: Silty SAND with Gravel (SPSM): light brown cover Glacial Till: - 1H BC=6 Silty SAND with Gravel (SM): fine to 12 medium -grained, sub -rounded, gray, moist, medium 15 dense, fine gravel 5 Becomes fine and very dense 2" SCH 40 Solid BC=9 38 PVC Riser 38 very gravelly 20/40 Sand Interglacial Deposits 10 Silty GRAVEL or Sand (GM): medium dense _ Pack BC=12 8 — 12 — — SAND with Silt and Gravel (SP-SM): sub -rounded, BC=S 4 light brown, moist, loose 4 — 15 Becomes medium dense WS BB 11 NP NP — BC=6 7 Slotted 0.010 4 8 - PVC Screen Glacial Till: Silty SAND with Gravel (SPSM): fine to 50/1" medium -grained, sub -rounded, light gray, moist, very -_ dense, fine to coarse gravel _ 20 BC=35 50/3" The boring was terminated at appropmately 21.5 ft. GROUNDWATER LEVEL INFORMATION: below ground surface. The boring was backfilled Groundwater was not observed during drilling or after with sand and pipe on September 07, 2018. completion. 25 30 PROJECT NO. 20192016 BORING LOG MW-3 BORING DRAWN BY: TC ("KLEINFEL 'OER CHECKED BY: RS MW-3 COSTCO FUEL FACILITY EXPANSION Bright People. Right Solutions. DATE: 9/12/2018 35100 ENCHANTED PARKWAYS FEDERAL WAY, WASHINGTON 98003 � REVISED: PAGE: 1 of 1 fCL EINFEL OER Bright People. a t Sofug — APPENDIX B GEOTECHNICAL LABORATORY TESTING 20192016.001 A/SEA1 8R8571 0 October 16, 2018 © 2018 Kleinfelder www.klr:infelder.caln 0 w 0 a rc °1 GRAVEL SAND COBBLE SILT CLAY coarse fine coarse medium fine 'o m U.S. SIEVE OPENING IN INCHES I U.S. SIEVE NUMBERS I HYDROMETER 12 6 4 3 2 1.5 1 3/4 1/2 3/8 3 4 6 810 1416 20 30 40 50 60 100 140 200 100 95 90 85 80 75 70 = 65 (9 w 60 m 55 w 50 z LL 45 z U 40 Of a 35 30 25 20 15 10 5 0 100 10 1 0.1 GRAIN SIZE IN MILLIMETERS 0.01 0.001 Exploration ID Depth (ft.) Sample Description LL PL PI B-1 20 SILTY SAND with GRAVEL ISM) NP NP NP X B-5 5 SILTY SAND with GRAVEL (SM) NP NP NP B-5 10 SILTY SAND with GRAVEL (SM) NP NP NP X MW-3 15 WELL -GRADED SAND with SILT (SW-SM) NP NP NP ID Depth (ft.) D100 D, D,o D10 Cc Cu PassiExploration 14" assi#4 #200 0�6SIIt %Clay B-1 20 4.75 1.995 0.173 NM NM NM 69 22 NM NM X B-5 5 4.75 1.732 NM NM NM NM 68 32 NM NM A B-5 10 4.75 0.285 NM NM NM NM 81 43 NM I NM X MW-3 15 4.75 0.482 0.242 NM 1.99 1 7.89 88 1 11 1 NM NM Coefficients of Uniformity- Cu = D60 / D10 Coefficients of Curvature - Cc = (DJ0)Z / De0 D10 Sieve Analysis and Hydrometer Analysis testing performed in general accordance D60 = Grain diameter at 60% passing with ASTM D422. D30 = Grain diameter at 30% passing NP = Nonplastic NM = Not Measured D10 = Grain diameter at 10% passing PROJECT NO.: 20192016 SIEVE ANALYSIS APPENDIX rKL DRAWN BY: TC EINFEL DER CHECKED BY: RS C-3 COSTCO FUEL FACILITY EXPANSION Bright People. Right Solutions. DATE: 9/12/2018 35100 ENCHANTED PARKWAYS FEDERAL WAY, WASHINGTON 98003 REVISED: KL EINFEL DER \` Bright Pwpte Bight Sotutl APPENDIX C PRIOR GEOTECHNICAL REPORT 20192016.001A/SEA18R85710 October 16, 2018 © 2018 Kleinfelder www.kleinfelder.com Geotechnical Investigation COSTCO Gasoline Retail Facility Warehouse #61 35100 Enchanted Parkway South Federal Way, Washington k'q KLElNFELDER An employee owned company k'q KLEINFELDER Geotechnical Investigation COSTCO Gasoline Retail Facility Warehouse #61 35100 Enchanted Parkway South Federal Way, Washington Prepared for: Ms. Kathy Nishihira, P.E. COSTCO Wholesale 999 Lake Drive Issaquah, WA 98027 Prepared by: Kleinfelder Inc. 2405-140th Avenue, NE Suite A101 Bellevue, Washington 98005 Telephone: (425) 562-4200 Facsimile: (425) 562-4201 I'm SJ-1 V"'«f t 12/10/99 Copyright 1999 Kleinfelder, Inc. All Rights Reserved This document was prepared for use only by the clien4 only for the purposes stated, and within a reasonable time from issuance. Non- commercial, educational and scientific use of this report by regulatory agencies is regarded as a "fair use" and not a violation of copyright. Regulatory agencies may make additional copies of this document for internal use. Copies may also be made available to the public as required by law. The reprint must acknowledge the copyright and indicate that permission to reprint has been received. TABLE OF CONTENTS 1.0 Introduction.......................................................................................................................................1 2.0 Planned Construction........................................................................................................................1 3.0 Field and Laboratory Investigations..................................................................................................1 4.0 Surface and Subsurface Conditions...................................................................................................2 5.0 Engineering Analysis and Recommendations....................................................................................3 General.................................................................................................................................. 3 SitePaving and Grading...................................................................................................................3 Excavatabit ity.................................................................................................................................... 4 TemporaryExcavation Stability.......................................................................................................4 Structural Fill and Compaction........................................................................................................4 Foundations......................................................................................................................................5 Asphalt Concrete Pavement Section Design and Construction.........................................................5 Portland Cement Pavement Section Design and Construction....................................................... - 7 SoilCorrosion..................................................................................................................................8 6.0 Limitations........................................................................................................................................8 7.0 Additional Services...........................................................................................................................9 8.0 Closure..........................................................................................................................................10 APPENDICES Appendix A: Figure A-1: Vicinity Map Figure A-2: Site Plan Figure A-3: Boring Log B-1 Figure A-4: Boring Log B-2 Figure A-5: Boring Log B-3 Figure A-6: Boring Log B-4 Figure A-7: Boring Log B-5 Figure A-8: Boring Log B-6 Figure A-9: Soil Classification Legend Appendix B: Application for Authorization to Use 60-00187X001/6019R 176.doc Page i of i Copyright 1999 Kleinfelder, Inc. K L E I N F E L D E R 2405 140th Avenue, NE, Suite Al 01, Bellevue, WA 98005 (425) 562-4200 (425) 562-4201 fax 1.0 Introduction This report presents the results of Kleinfelder's field investigation and analysis performed at the subject site to aid in the design and construction of a proposed retail gasoline facility at the existing COSTCO Wholesale store in Federal Way, Washington, as indicated on the Vicinity Map, Figure A-1. The purpose of this study was to develop site -specific information and recommendations regarding the planned retail gasoline dispensing facility. The work performed for this investigation was authorized by Ms. Kathy Nishihira, P.E. of COSTCO Wholesale (COSTCO) and was conducted in accordance with our proposal dated November 5, 1999 and our November 24, 1999 revised proposal. 2.0 Planned Construction We discussed site development plans with Ms. Nishihira and Mr. Chris Ferko of Barghausen Consulting Engineers, Inc. (Barghausen) and reviewed plans prepared by Barghausen dated 10/15/99. We understand that the parking area west of the existing COSTCO store and south of the existing Olive Garden Restaurant will be utilized to construct a retail gasoline dispensing facility. Figure A-2 presents a proposed site plan. Planned construction for Parcel 1 was not finalized at the time this report was written. However, we understand this parcel may be used for parking and/or a single -story light structure. Planned construction for Parcel 2 includes a free standing canopy covering three service islands, a controller enclosure, and three 20,000-gallon underground gasoline storage tanks. We understand that the bottom of the tanks will be approximately 20 feet deep. We further understand that Portland cement concrete pavement is planned within the fueling station area as well as over the underground storage tanks. 3.0 Field and Laboratory Investigations Subsurface soil conditions within the planned tank and fueling station areas were investigated on November 23, 1999 by drilling six borings (designated B-1 through B-6) at the approximate locations indicated on the Site Plan, Figure A-2. Two borings were drilled to a maximum depth of about 23 feet below ground surface (bgs) in the tank area (B-1 and B-2, Parcel 2). Four additional boring were completed to depths ranging between 7 and 19 feet below ground surface (bgs) in the fueling area (Parcel 2) and northern parcel (Parcel 1) of the site. (See Figure A-2 for parcel locations.) Logs of the subsurface conditions, as encountered in the borings, were 60-00187X001/6019R176.doe Page 1 of 10 Copyright 1999 Kleinfelder, Inc. K L E I N F E L D E R 2405 140th Avenue, NE, Suite Al01, Bellevue, WA 98005 (425) 562-4200 (425) 562-4201 fax recorded at the time of drilling and are presented on the boring logs, Figures A-3 through A-8. A key to soil symbols and terms is presented on Figure A-9. Drilling was accomplished with a truck -mounted, hollow -stem, auger drill rig equipped for soil sampling. Representative soil samples were obtained using a standard split -spoon sampler driven by a 140-pound hammer free -falling through a distance of 30 inches. Sampler driving resistance, expressed as "blows per the last 12 of 18 inches of penetration " is presented on the boring logs at the respective sampling depths. The samples were classified by a field geologist, and representative portions of each sample were packaged and transported to our laboratory for further analysis. 4.0 Surface and Subsurface Conditions The proposed COSTCO Wholesale Warehouse #61 Gas Station Addition site is comprised of a northern parcel (Parcel 1) and a southern parcel (Parcel 2). Parcel 1 will likely be developed for parking and/or a light structure. Parcel 2 is the planned location for the proposed retail gasoline dispensing facility. The parcels are bounded to the north by the Olive Garden Restaurant, to the west by 16" Avenue South, to the south by South 352°d Street and to the east by the continuation 1 of the paved parking area for the Federal Way COSTCO warehouse. The southwest portion of a gravel and asphaltic concrete -paved parking lot for the Federal Way COSTCO store occupies the site. Concrete curbs and planters are located along the north and east sides of the site. These planters contain trees, small shrubs, and bark soil cover. Subsurface conditions at the project site are generally consistent between Parcels 1 and 2 and consisted of the following soil units: • Asphaltic Gravel Paving (Parcel 2) or Sod and Topsoil (Parcel 1) were encountered to approximately 0.5 foot bgs in each of the six borings. • Fill was encountered below the gravel or sod/topsoil to depths ranging from 6 to 12 bgs feet in all boring except for B-1. The fill consisted of medium dense to very dense, silty sand and silty gravel, with occasional lenses of sandy silt. The fill was probably derived from the underlying native soils at the site. • Alluvium was encountered from 12 to 19 feet bgs in Boring B-5 and 8 to 15 feet bgs in Boring B-6. The alluvium consisted of medium dense silty sand with gravel and traces of organics. A relict topsoil layer, consisting of soft silt, was identified in Boring B-5 above the alluvium from 12 to 14 feet bgs. • Till was encountered beneath the fill in Borings B-1 through B-4. The till consists of very dense gravelly silty sand with occasional cobbles and 60-00187XO0116019R176.doc Page 2 of 10 Copyright 1999 Kleinfelder, Inc. K L E I N F E L D E R 2405 140th Avenue, NE, Suite A101, Bellevue, WA 98005 (425) 562-4200 (425) 562-4201 fax boulders. Till likely exists beneath the alluvium in Borings B-5 and B-6, although we did not confirm this during our exploration program. • Groundwater was encountered in Boring B-2 at 16 feet bgs (seepage only) and 20 feet bgs in B-5, and B-6 at 12 feet. However, it should be noted that groundwater levels will likely rise above the current elevation during periods of increased precipitation common in late winter and spring. The boring logs presented on Figures A-3 through A-8 should be referred to for more detailed information regarding the soil and groundwater conditions encountered. 5.0 Engineering Analysis and Recommendations General Based on the results of our field and laboratory investigations and previous knowledge of the site, it is our opinion that the site is suitable for the proposed construction provided that the recommendations presented in this report are complied with. In general, structure foundations may be supported by conventional continuous or spread -type footings established on the existing scarified and compacted medium dense to very dense fill or native soils or approved structural fill. Furthermore, all Portland cement or Asphaltic concrete pavements may 'be supported on the existing medium dense to very dense fill or native soils or structural fill. Specific recommendations regarding site grading, structural fill placement, excavatability and temporary slopes, foundation and pavement design are presented below. 11 Site Paving and Grading Within areas to receive improvements, the existing asphaltic gravel or sod and topsoil should be removed to expose the underlying soils. Additional excavation should be performed to remove fine-grained soils (referred to as ML in Boring B-1) and loose fill soils. The excavated asphaltic gravel paving, granular fill and native granular soils may be stockpiled and reused as structural fill provided that the asphaltic gravel paving is thoroughly mixed with the granular fill material. Alternately, the asphaltic gravel paving can be discarded and the excavated granular fill can be stockpiled for future use. Within the controller enclosure, fueling station areas and all areas to receive pavements, the exposed soils should be scarified to a minimum depth of 8 inches. The scarified soils should then be brought to within plus or minus 2 percent of near optimum moisture content and compacted to a minimum of 90 percent of the maximum dry density as determined by ASTM- D1557. 60-00187X001/6019R176.doc Page 3 of 10 Copyright 1999 Kleinfelder, Inc. K L E 1 N F E L D E R 2405 140th Avenue, NE, Suite A101, Bellevue, WA 98005 (425) 562-4200 (425) 562-4201 fas Excavatability Based on the borings performed in the planned tank area, we anticipate that excavations to the required depth can be achieved with conventional excavating equipment. Excavation in dense till may require special equipment such as a Caterpillar D9 with a single ripper tooth. The contractor should be prepared for excavation of soils containing cobbles and boulders. It should be noted that groundwater was encountered at depths ranging from 16 to 20 feet during our field investigation, and may be encountered at shallower depths depending on the time of year that construction begins. Temporary dewatering may be required in order to install the underground tanks. The contractor should become satisfied that the conditions to be encountered and the type of equipment and dewatering methods are best suited for these conditions. Given the groundwater conditions present and the plans to install below -grade tanks, appropriate design consideration should be given to resisting potential buoyant forces acting on the tanks when the tanks are only partially full or empty. Temporary Excavation Stability The contractor will be responsible for assuring safe working conditions within excavations. Cut or fill side slopes shall not exceed 2H:1V, unless otherwise indicated on the drawings and approved by the local building authority. Shoring should be constructed in accordance with WISHA requirements. Structural Fill and Compaction All fill placed with the project should be structural fill. Structural fill may consist of previously excavated granular fill soils including asphalt if properly pulverized and mixed as discussed previously, or granular soils meeting the following gradation criteria; Sieve Size Percent Passing 4-inch 100 (No rocks or lumps greater than 6 inches) #4 mesh 50 max #200 mesh 5-10 60-00187X001/6019R 176.doc Copyright 1999 Kleinfelder, Inc. KLEINFELDER 2405 140th Avenue, NE, Suite A101, Bellevue, WA 98005 (425) 562-4200 (425) 562-4201 fax Page 4 of 10 All fill material shall be subject to approval of the geotechnical engineer. Structural fill should be placed in maximum 8-inch loose lifts and compacted to a minimum of 95 percent of the maximum dry density as determined by ASTM-D1557. The moisture content should be near optimum at the time of compaction. UST and product line backfill shall conform to manufacturers specifications. Foundations The controller enclosure and canopy foundations may be supported directly on scarified and compacted granular fill or native soils or structural fill. The footings should be established a minimum of 24 inches below the lowest adjacent final grade for frost protection and confinement. Footings may be proportioned for a maximum net allowable bearing pressure of 3000 pounds per square foot (psf). A one third increase may be used for transient wind or seismic loads. Uplift loads on the canopy may be resisted by the weight of the footing and overlying soil or by skin friction developed along deep foundations such as drilled piers. If the client wishes to consider pier foundations, Kleinfelder can provide specific recommendations regarding the design and construction of these foundations, upon request. Total settlement of footings founded on competent soils should be on the order of one inch or less with differential settlements of 1/2 inch or less. In order to limit potential settlement, the footing excavations should be observed to verify that competent soils are exposed and that the excavations are free of loose or disturbed soils. The friction acting along the base of footings founded on granular fill soils or structural fill may be computed using a coefficient of friction of 0.30 with the normal dead load. An allowable passive lateral earth pressure may be computed by using an equivalent lateral fluid pressure of 300 pounds per cubic foot (pcf) for the side of footings poured against natural soils or properly placed and compacted backfill. The values given above may be increased by one-third for transient wind or seismic loads. Asphalt Concrete Pavement Section Design and Construction Our pavement design recommendations were developed using the American Association of State and Highway Transportation Officials (AASHTO) method for flexible pavement design. Our pavement design pertains to areas outside of the canopy area, but within the gasoline dispensing facility boundaries. Our recommended design pavement section assumes that the subgrade soil is 60-00187X001/6019RI76.doc Page 5 of 10 Copyright 1999 Kleinfelder, Inc. K L E I N F E L D E R 2405 140th Avenue, NE, Suite A 101, Bellevue, WA 98005 (425) 562-4200 (425) 562-4201 fax firm and unyielding following proofrolling and/or has been compacted to at least 95 percent of the soil's maximum dry density, as determined by ASTM D1557 (modified Proctor). Our pavement section calculations are based on the following: ■ Annual maintenance such as sealing cracks in the pavement. • Design pavement life of 20 years. • Maximum anticipated traffic loading values of 500 automobiles, 5 Iight trucks, 3 medium weight trucks, and 3 heavy trucks per day. • Adequate drainage of surface and irrigation water to catch basins. Heavy construction traffic on asphalt pavements may exceed the design loads and could potentially damage or shorten the life of the pavements. Therefore, we recommend the contractor take appropriate measures to protect the pavement during construction. The design pavement sections should consist of a layer of crushed rock base (CRB) material placed on firm existing fill (or structural fill) and overlain by an Asphalt Concrete Pavement (ACP). The design pavement section should consist of one of the following: Minimum CRB Minimum ACP Parking and Lightly Traveled Areas 6 2 Heavy Traffic Areas 6 4 Prior to placement of pavement material, the subgrade should be evaluated by proofrolling. CP Yielding or unsuitable subgrade soils should be overexcavated and repaired as recommended in the Site Grading section of this report. The aggregate and asphaltic materials that should be placed and compacted in the parking and traffic areas of the site to the lines and grades shown on the plans are as follows: • Crushed Rock Base should consist of clean, free draining gravel or crushed rock meeting the requirements of Section 9-03.9(3) Crushed Surfacing, Base Course in the 1996 Edition of the State of Washington Standard Specifications for Road, Bridge, and Municipal Construction (referred here after as the Standard Specifications). • Asphalt Concrete Pavement should consist of one or more courses of plant -mixed asphalt concrete composed of asphalt and aggregate, with or without mineral fiIIer, mixed in proportions to provide a homogeneous, stable and workable mixture. It should meet the requirements of Section 9- 03.8 Aggregates for Asphalt Concrete, for Class B materials, in the Standard Specifications. 60-00187X001/6019RI76.doc Page 6 of 10 Copyright 1999 Kleinfelder, Inc. K L E I N F E L D E R 2405 140th Avenue, NE, Suite Al 01, Bellevue, WA 95005 (425) 562-4200 (425) 562-4201 fax • Paving Asphalt should consist of AR4000OW grade asphalt meeting the requirements of Section 9-02.1(4) Paving Asphalt in the Standard Specifications. After satisfactory installation and compaction of utility trench backfills in areas to be paved, subgrade soils should be moisture conditioned and compacted to at least 95 percent of the maximum dry density so as to provide a firm, smooth, unyielding surface. After compaction, the subgrade should be kept moist to prevent it from drying out and cracking before placement of the CRB. After satisfactory completion of subgrade preparation, the CRB should be placed in a manner to prevent segregation and compacted to at least 95 percent of the maximum dry density with vibratory compaction equipment to provide tight interlock between aggregate particles. After placement and compaction of the CRB, the contractor should be responsible for the preparation of the exposed base layer surface, the placement and the compaction of an ACP course, or courses, to the lines and grades shown on the plans and described in the specifications. The ACP, its placement, and compaction should meet the requirements of Section 5-04, Asphalt Concrete Pavement of the Standard Specifications. Portland Cement Pavement Section Design and Construction Support for the Portland cement concrete (PCC) pavement may be provided by properly prepared granular fill soils or structural fill. Prior to placing pavement or base course materials, all unsuitable soils should have been excavated and the exposed soils prepared as recommended in the Site Grading section of this report. Recommendations for pavement structural sections are based upon assumed traffic loads, classification and strength characteristics of the subgrade soils and the site grading recommendations contained in this report. Given this information, we recommend the following minimum pavement sections: Location Tank Slab Pump Island Slab 60-00187x001 /6019R 176.doc Copyright 1999 Kleinfelder, Inc. Material Portland Cement Concrete Pavement Aggregate Base Course Portland Cement Concrete Pavement Aggregate Base Course Thickness in 7.0 6.0 6.0 6.0 Pave 7 of 10 K L E I N F E L D E R 2405 140th Avenue, NE, Suite A101, Bellevue, WA 98005 (425) 562-4200 (425) 562-4201 fax These pavement sections are applicable for pavements with aggregate interlock joints and edge support. The concrete should possess a minimum modulus of rupture of 650 pounds per square inch (psi) and the mix should be designed in accordance with the American Concrete Institute (ACI) manual. Reinforcement design should be performed by the structural engineer. Longitudinal and transverse joint spacing should not exceed 12 feet and 15 feet, respectively. Joint details should conform to Portland Cement Association (PCA) guidelines. Expansion joints in concrete slabs should be sealed with petroleum resistant sealant to prevent minor releases from impacting subsurface soil. Prior to aggregate base placement, the pavement area subgrade should be prepared as recommended previously. Crushed Rock Base should consist of clean, free draining gravel or crushed rock meeting the requirements of Section 9-03.9(3) Crushed Surfacing, Base Course in the 1996 Edition of the State of Washington Standard Specifications for Road, Bridge, and Municipal Construction (referred here after as the Standard Specifications). The base material should be placed in uniform loose lifts, brought to near optimum moisture content and compacted to a minimum of 95 percent of the maximum dry density as determined by ASTM-D1557. Care should be taken to achieve uniform compaction across the pavement area. Compaction levels should not vary by more than 5 percent between the highest and lowest acceptable readings. It is important that construction observation and testing be performed to verify that these recommendations are complied with. It is important that pavement grades be set to provide positive drainage to suitable drainage structures. A desirable slope for drainage in paved areas is two percent. Soil Corrosion Soils on this site are not expected to contain salts in sufficient concentration to be considered corrosive to metal or concrete. However, as a precautionary measure, we recommend that all concrete in contact with the onsite soils contain Type II cement and be placed in accordance with ACI procedures. 6.0 Limitations The recommendations contained in this report are based on our field explorations and our understanding of the proposed construction. The subsurface data used in the preparation of this 60-00187X001/6019R176.doc Page 8 of 10 Copyright 1999 Kleinfelder, Inc. K L E I N F E L D E R 2405 140th Avenue, NE, Suite A101, Bellevue, WA 98005 (425) 562-4200 (425) 562-4201 ray report was obtained from the four borings performed for this investigation. It is possible that variations in the soil and groundwater conditions could exist between the points explored. The nature and extent of variations may not be evident until construction occurs. If any conditions are encountered at this site, which are different from those described in this report, our firm should be immediately notified so that we may make any necessary revisions to recommendations contained in this report. In addition, if the scope or location of the planned construction changes from that described in this report, our firm should also be notified. This report was prepared in accordance with the generally accepted standard of practice at the time the report was written. No warranty, express or implied, is made. It is the Client's responsibility to see that all parties to the project including the designer, contractor, subcontractors, etc. are made aware of this report in its entirety. The use of information contained in this report for bidding purposes should be done at the Contractor's option and risk. 7.0 Additional Services The recommendations made in this report are based on the assumption that an adequate program of tests and observations will be made during construction to verify compliance with these recommendations. These tests and observations should include, but not necessarily be limited to, the following: • Observations and testing during site preparation, earthwork and structural fill placement. • Observations of footing excavations. • Consultation as may be required during construction. We also recommend that project plans and specifications be reviewed by us to verify compatibility with our conclusions and recommendations. Additional information concerning the scope and cost of these services can be obtained from our office. 60-00187X001/6019R 176.doc Copyright 1999 Kleinfelder, Inc. Page 9 of 10 KLEINFELJFR 24U-5 1-10th Avenue:, NE, SuitU A!01, 8d(",LIC, W,\ `!tick'.) 2_,,, 502-J_ M ,.4'; 8.0 Closure We appreciate the opportunity to be of service on this project. Should you have any questions regarding this report or wish to discuss additional services, please do not hesitate to contact the undersigned at (425) 562-4200, or Joel Carson, Kleinfelder's Client Service Manager to COSTCO Wholesale at (208) 376-9700. Sincerely, KLEINFELDER, INC. /t/ Susan G. Harrison, P.E. Project Engineer James M. Schmidt, P.E. Cam" Manager Geotechnical Engineering cc: Joel Carson; Kleinfelder, Boise, Idaho Chris Ferko; Barghausen 60-00187X001/6019R 176.doc Copyright 1999 Kleinfelder, Inc. ES M. SOH,�J WAs}�, rd�' s v , � � F��52 T ' StoNAlEN EXPIRES 8/31/ oo Page 10 of 10 K L E 1 N F E L D E R 2405 140th Avenue, NE, Suite A101, Bellevue, WA 98005 (4 25) 562-4200 (425156 2-4:201 fax � `t'I; • � 'r'. � Y. �• ' : � e - ' w is f ;� ; : �=. r•" _ � . ► !� �;;• 1 Iswti w'� 'l;;y' is '- !• ;M1 /.. 14 Aq _ f r s } �1■ "`��1. ■ t ' ft €i i f 'rj,� ....�„� :r i Pwn w Lakr M1•+ ;- ' � .5 jr �' J '• �. i.�` ��..✓ F. LJ i • y"iTsrri w - ' f ri 1 _ �.� 1 Ave, ti 1'A.,1'19T l.eke,.M+ � • � r`.'.�- "� _ � •�- r. i,y7r • ... -5 yt i s i��^- et- .t o0ake ;I . ! �clp• I _ ii7' Site /• _ 'mow+•�� '�•� ' f y - } i'.:i" • I i 1 - f`' %.' �. _• __ � 7 .1. t i'. �• 1��ti. S tr^�i�•'• ' r� ,�i — ' 1. k� •.'..: '.. .. - t� �� J_•�,,}• a �f � r F:-f}� ' 1'��L.�' . �l � , ; . ' �y�y t-�Jj]., F• J i r •�•�• .r'=�.'I ,r'•"1 '+ L..!''J� �'j `f •� �.••ri1� I `il f rf -� 'l �' '' •I I ••• ��4'��• i �� n.�.� � J� i 1' . • / ,r "'1 ' '...... i I I � , 1�i� •I I IIMF i r' i ± { • ,�� }! 4 �� i' �•' 4+ ' +M.�..� '•e+ran'• ,_..,�.�.'..C..._. •--'� :��. 'ram •i• �' .,f` - - � - --• ..i 77 t r r' • `� � • j �� I.1`• } ':.iTwi ; 1w,-, -f n�'r :I' ,� .I I�: .I� `% � a!•I'FI-+.�,.�' �'Ir• •lf-tiy� - ��, T ;�-{--. ••Y k� � �f _� r�' I f f } � I ��_�Ir�.__.1.-.--��r`; •:•'+.r . � � - ' ' w s'' �I �fl� ; '' ,% `rTrn{.1 La.� �•" if ' is-:•rkrr� s.'�� r , ' � r.. J i I .,,,�i �:�;;� r..s . .1 �:I:•Y� ' . ' •' `�+ii �1•. * •, • �•1,' 1 �( fJ��F.?!y, . i rl ~-�.. r�: �'� .r� •.. yeti,• `• • �.; •� . �'� �� -'f+ '3i ri�'�i�r3 L7Y •Y 2000 Scale in feet Reference) USGS 7,5' topographic quadrangle, Poverty Bay, Wash., 1981 L\DRAWINGS\60001 87X\FIGI.DWG r FIGURE COSTCO Gasoline Retail Facility Warehouse No. 61 VICINITY MAP A-1 35100 Enchanted Parkway South Federal Way. Washington KLEINFELDER Project: 60-0018-7X.001 11 /30/99 C❑STC❑ BUILDING K e 0 100 +� &B-1 Klelnfelder boring number and approximate location Scale in feet References Overall Site PLan-Location No. 61, by Barghausen Consulting Engineers, Inc., dated 10/15/99 U\ DRAWINGS\ 60001 87X\FIG2.DWG COSTCO Gasoline Retail Facility FIGURE Warehouse No. 61 SITE PLAN A-2 35100 Enchanted Parkway South Federal Way, Washington KLEINFELDER Project: 60-0018-7X.001 11 /30/99 TESTING PROGRAM LABORATORY FIELD ,? WELLIPIEZO > o F �� F, E U aW •--CONSTRUCTION a g 5 _ Zw F Oa A Q OZ F aQN W x a ; Mz 3,go e U a a z O 0 , 15 115 DATE DRILLED: 11-23-99 LOGGED BY: WSL _-`JIEWED BY: SGH U.S.C.S. SOIL DESCRIPTION z SURFACE: Gravel paving relatively fiat. GPa� .... b.»... r»....b. Light gray -brown, sandy SILT with gravel, ML very stiff. moist), TILL Gray silty, fine to medium SAND with i gravel, (very dense, moist), TILL 22 f S-1 SDI .. I 50/6" I r I 1 I + I t I t : t I , I t 25 S-2 - slight increase in percentage of gravel f + 40 38 I + r r f a I t I i ' = 20 S-3 - grades to dense f , 20 + I _ I 1 17 I Light -gray, fine to medium SAND with silt, 1 (very dense, moist), TILL I � E SP- I � SM I 15 S-4 E e 50/6" Light -gray, silty, fine to medium SAND 1 SM :.' with gravel, (very dense, moist), TILL i I 1 I + Light -gray silty, fine GRAVEL with sand, s i j< (very dense, moist), TILL 1 I � ! , o s 37 S-5 GM I 15 a 50/3" I I I t � f t ' ! SURFACE ELEVATION (feet): DRILLING METHOD: HSA Auger TOTAL DEPTH (feet): 23.0 DRILLER: Holt Drilling DIAMETER OF BORING (in): 4 1/4 CASING SIZE: COSTCO Gasoline Retail Facility k4KLEINFELDER Federal Way, Washington GEOTECHNICAL AND ENVIRONMENTAL AND ENGINEERS MATERIALS TESTING SOILS ABORING LOG IECT NUMBER: 60-00187x-001 B-1 FIGURE A -3a PAGE I oft TESTING PROGRAM i U.S.C.S. LABORATORY FIELD WELLIPIEZO w w w o SOIL DESCRIPTION F F w E CONSTRUCTIONcd wo ,waW p F w `i'o Q d�CA z r U A fx O a Cn Z Oz U a z O - grades to coarse gravel 1 1 I I I I i t I t I I I I I I GM I i I I I s I I t t I I 50l6" o I *SAMPLER e Cal. (3"OD) Cal TYPE Split Spoon Split Spann {►+•! liners} **HAMMER WEIGHT KLEINFELDER GEOTECHNICAL AND ENVIRONMENTAL ENGINEERS SOILS AND MATERIALS TESTING tsoring compima ai L_i ieei on i ilzityy. Groundwater not observed during drilling. SPT f2" OD)' Shelby Split SF Tube 140 ibs (30" Drop) Grab No Recovery a a w WELLlPTEZO W CONSTRiJCTTON a e w w ° Q 3 0 5 - 1 15 LABORATORY I FIELD e 11 az zw w Oe � Oz o a ez o a i i I I I i r I � I I � I I I I 1 I 1 I ' 20 1 1 24 , I I I 30 l i I I I I I I I I 18 I I " 20 1 35 37 1 I I t 1 I I , I , , 1 1 ' i I I I 1 I , I 1 I 1 I 30 I I = t 1 I I i t f I I I ! 1 . I ! I I I I I { 23 I 1 I 36 I I I I I I I I I 1 I I 1 I I 1 I I 1 I 1 I I 1 I I 4 I • 1 I 10/5" I 1 1 I 1 i I I I I I ' I i I 30 46 f I I 1 , ! I I I I 1 I • 50/5" 20 ' DATE DRILLED: 11-23-99 LOGGED BY: WSL P`-'TEWED BY: SGH U.S.C.S. l wx w o SOIL DESCRIPTION 0.0 z �. Cnz `n SURFACE: Gravel paving, flat. 3" gravel paving Svi Gray silty fine to medium SAND with gravel, (dense, moist), FILL S-1 I I. 1- I ] -grades to very dense - grades to dense with graylbrown mottling S-2 S-3 - grades to very dense Gray silty fine to medium SAND SM gravel, (very dense, moist), TILL S-4 - grades to light gray -brown with occasional clean sand lenses <1" thick - groundwater seepage at 16 feet, grades to wet S-5 I } I I I - becomes gray, moist at 18 feet SURFACE ELEVATION (feet): DRILLING METHOD: HSA Auger TOTAL DEPTH (feet): 23.0 DRILLER: Holt Drilling DIAMETER OF BORING (in): 4 1/4 CASING SIZE: COSTCO Gasoline Retail Facility k'4Y.ILEINFELDER Federal Way, Washington GEOTECHNICAL AND ENVIRONMENTAL ENGINEERS BORING LOG SOILS AND MATERIALS TESTING IECT NUMBER: 60-00187s-001 B-2 FIGURE A -4a PAGE 1 of 2 z 0 F c z C U TESTING W e WELL/PIEZO W Wa ONSTRUCTION w Fw a 1 A Q' Oz E n. 20- 123 LTORY I FIELD ""..... rFr �i>Zw L' u W to Aa.0.1 °u A aN a W 0 Cnz SOIL DESCRIPTION - gravel increases at 20 feet, brown, wet I I } I I r I s I i r 50/5" S-6 rsvnng compye " ar. L-1 MUL uu 1 "1'J 77. Groundwater seepage encountered at 16 feet. Groundwater table encountered at 20 feet during drilling. * SAMPLER B Cal. (3"OD) a Cal' SPT C2" OD)' Shelby m No �S Split Spoon �s Grab TYPE Split poon (w! liners)300 Split poott Tube Recovery lb **HAMMER WEIGHT I'M" n—" VAA"300 n-1 i 611 r4rnn7 KLEINFELDER GEOTECHNICAL AND ENVIRONMENTAL ENGINEERS SOILS AND MATERIALS TESTING PRon T w e w WELLIKEZO w wo H w-ONSTRUCTION a � w E✓z � L a Oz 3 �o a [it 15- 19 G PROGRAM _s a wx U.S.C.S. w SOIL DESCRIPTION LTORY FIELD w z Q Wz SURFACE: Flat gravel surtop .: z o I + } 4" gravel paving j Light gray -brown, silty fine to medium I i i I I SAND with gravel, (loose, moist), FILL ] ! I I I 1 r I I SM 1 i I I I I 1 I 2 S-1 I ! I I I 2 I + I 18 I 1 i I I Light gray, silty fine to medium SAND I I i t SyI with gravel, (dense, moist), FILL I I r ! 17 S-2 1 I I + 1 10 8 + I I ] I grades to medium dense + I I I 1 + + _ _ _ _ _ _ — — — Gray silty fine SAND with gravel, (dense, 21 S-3 SM moist), TILL r + I 1 1 I I 29 19 I r + I I I DATE DRILLED: 11-23-99 SURFACE ELEVATION (feet): LOGGED BY: WSL TOTAL DEPTH (feet): 9.0 -`(IEWED BY: SGH DIAMETER OF BORING (in): 4 1/4 k%114MEINFELDER GEOTECHNICAL AND ENVIRONMENTAL ENGINEERS SOILS AND MATERIALS TESTING DVI IISY, LV=ny� .Lv aL 7 iYLL — 4 art.yr /I Groundwater not encountered during drilling DRILLING METHOD: HSA Auger DRILLER: Holt Drilling CASING SIZE: O C a 2 I PROJECT N TESTING PROGRAM U.S.C.S. LABORATORY FIELD W ELLIPIEZO W � F F `�' E W J W W O CONSTRUCTION a �F" ZW W i a L w Fz a CA0 �- 3 °° as z H a �� Oz " F A a Qo a a l a Q m" `n `nZ c. 3 ° Q a o o V I U a a z O 15- SOIL DESCRIPTION paving. " 611 gravel paving Gray silty fine to medium SAND with r r I I 1 I I I f gravel, (dense, moist), FILL I I i I r I I r x f 14 S-1 SM r I I 20 r I ° 18 l I i I r r I I I I f I I I f I t I l I 1 I i f i p 7 S-2 - grades to medium dense I I I k 10 13 I I ring-tited--�e¢f rfz�i},tea feet at 2 locations on a boulder or on very dense glacial till. Groundwater not encountered during drilling. DATE DRILLED: 11-23-99 SURFACE ELEVATION (feet): DRILLING METHOD: HSA Auger LOGGED BY: WSL TOTAL DEPTH (feet): 6.5 DRILLER: Holt Drilling REVIEWED BY: SGH DIAMETER OF BORING (in): 4 1/4 CASING SIZE: COSTCO Gasoline Retail Facility FIGURE Federal Way, Washington k4KLEINFELDER A - 6 GEOTECHNICAL AND AND ENVIRONMENTAL MA ERIIA S TEST NG ENGINEERS SOILS BORING LOG ROJECT NI')113ER: 60-00187x-001 B-4 PAGE 1 of 1 x W a O a Q TESTING PROGRAM LABORATORY FIELD > ,6 WELLIPIEZQ W e � F � F w ��'., E •= y a g• CONSTRUCTION Wz a '7r F A 3 o a 00 A 3 V a e- a Z O I 10- 15 ca 115 - 119 U.S.C.S. SOIL DESCRIPTION Level grassy area in parking lot. 1" sod and topsoil SM Light gray silty SAND with gravel cobbles, + boulders, (dense, moist), FILL { r I r f I 1 1 r I r r r r I r 50/5" P NR f 1 I I t 1 t 1 ! I ] 1 I ! I I !I ] I GM Gray silty GRAVEL with sand and cobbles— , (dense, moist), FILL I ! r 1 r I r t I r I 19 25 S-2 0 0 I r 20 I t t 1 1 SM - ' Gray fine silty SAND with occasional 1s S_3 gravel, (medium dense, moist), FILL > � 1 I r s 10 I ! 1 ! ! 1 i I I I 1 f I I I s I I r I 6 S-4 I I I 1 13 12 1 r I r ! 1 I I Q I I I 1 f ML Gray brown, sandy SILT with roots and z S-5 organics, (soft, wet), RELICT TOPSOIL. I I 1 t 1 I it i 1 I SM —! Light gray -brown, silty fine SAND, (medium dense, wet), ALLUVIUM 1 1 1 1 1 I I r r I I I s 1 1 1 ] f r i s i I s I I r I ] I f + ' ' 5 S-6 I r r I ! I 16 + 1 I I I I ! I r I I I 21 DATE DRILLED: 11-23-99 LOGGED BY: WSL P-VIEWED BY: SGH doring completes at 19 teet on 11//J/yy. Groundwater encountered at 12 feet during drilling. SURFACE ELEVATION (feet): DRILLING METHOD: HSA Auger TOTAL DEPTH (feet): 19.0 DRILLER: Holt Drilling DIAMETER OF BORING (in): 4 1/4 CASING SIZE: COSTCO Gasoline Retail Facility FIGURE Federal Way, Washington KLEINFELDER A _ 7 GEOTECHNICAL AND ENVIRONMENTAL OI S AND MATERIA S TESTING ENGINEERS BORING LOG rECT NU1lBER: 60-00187x-001 B-5 TESTING PROGRAM U.S.C.S. LABORATORY FIELD WELLiPiEzo w d �� SOIL DESCRIPTION H 0 CONSTRUCTION09 wo �DF z a a �� E�IQ mF U 3� da (nz z Ca 3 Oz E I a pC ; SURFACE: Flat grassy, NE portion of Parcel 1. 20 a oz o 1" sod and topsoil 4 Light gray silty GRAVEL with sand and GM° cobbles, (medium dense, moist to wet), /''� FILL 40 1 1 + ' 1 I f T ! 14 S-1 - grades to very dense, moist P p 4 1 Light gray silty, fine to medium SAND z V with gravel, (very dense, moist), FILL 1 I z SM 5 I L I + r I � 19 S-2 C7 O r 20 a r 1 i 1 I 50/4+. .0 LT. W s I r I I I I I I I I I I ` i I I I I 12 S-3 EF. ( Light brown silty fine to medium SAND I I + I 6 with gravel, trace organics, (dense, moist), Q t _ SM ALLUVIUM z r I 1 I I I d Y I I I I z O 1 I Q i I I j I I I I , I I r I V + t 6 S-4 - grades to light gray -brown, wet a• -.4 12 14 z I s I r i 11 Baring terminated dale to refusal at 15.1 feet on very dense glacial till or gravel on Ac 11/23/99, Groundwater encountered at Th approximately 12 feet during drilling. ;D rn F DATE DRILLED: 11-23-99 SURFACE ELEVATION (feet): DRILLING METHOD: HSA Auger LOGGED BY: WSL TOTAL DEPTH (feet): 15.1 DRILLER: Holt Drilling FuVIEWED BY: SGH DIAMETER OF BORING (in): 41/4 CASING SIZE: COSTCO Gasoline Retail Facility FIGURE k4KLEINFELDER Federal Way, Washington � A _ g GEOTECHNICALDENVIRONMENTAL ENGINEERS BORING LOG SOILS ANDMA ETESTING ST NG PROJECT NU.NTBE;R: 60-00187x-001 B_6 PAGE 1 of 1 SOIL CLASSIFICATION CHART SYMBOLS TYPICAL MAJOR DIVISIONS GRAPH LETTER DESCRIPTIONS . 6• •. `• WELL -GRADED GRAVELS, GRAVEL - CLEAN . 1I a, Gw SAND MIXTURES, LITTLE OR NO GRAVEL GRAVELS s •; FINES a u . a Q ❑ GP POORLY -GRADED GRAVELS, GRAVEL - SAND MIXTURES, LITTLE AND GRAVELLY (LITTLE OR NO FINES) SOILS Q ❑D OR NO FINES 0 o GM SILTY GRAVELS, GRAVEL - SAND - COARSE GRAVELS WITH GRAINED MORE THAN 50% FINES 0 , SILT MIXTURES SOILS OF COARSE FRACTION PRECIABLE AMOU RETAINEO ON NO. GC CLAYEY GRAVELS, GRAVEL - SAND - 4 SIEVE OF FINES) 4 SIEVE CLAY MIXTURES SW WELL -GRADED SANDS GRAVELLY CLEAN SANDS SANDS, LITTLE OR NO FINES SAND MORE THAN 50% OF MATERIAL IS AND (LITTLE OR NO FINES) SP POORLY -GRADED SANDS, LARGER THAN NO, SANDY GRAVELLY SAND, LITTLE OR NO 200 SIEVE SIZE SOILS FINES SANDS WITH SM SILTY SANDS, SAND - SILT MORE THAN 500A MIXTURES OF COARSE FINES FRACTION PASSING ON NO.4 APPRECIABLE AMOUN CLAYEY SANDS, SAND - CLAY SIEVE OF FINES) `SC MIXTURES INORGANIC SILTS AND VERY FINE L SANDS, ROCK FLOUR, SILTY OR CLAYEY FINE SANDS OR CLAYEY SILTS WITH SLIGHT PLASTICITY INORGANIC CLAYS OF LOW TO SILTS CL MEDIUM PLASTICITY, GRAVELLY LIQUID LIMIT AND DY s, SILTY LA,FINE CLAAYS, LESS THAN 50 LEANN CCLAYYS GRAINED CLAYS SOILS = _ = OL ORGANIC SILTS AND ORGANIC - — -- — SILTY CLAYS OF LOW PLASTICITY INORGANIC SILTS. MICACEOUS OR lis MH DIATOMACEOUS FINE SAND OR MORE THAN 50% SILTY SOILS OF MATERIAL IS CH INORGANIC CLAYS OF HIGH NO. 200SITHAN E SIZE SILTS LIQUID LIMIT AND GREATER THAN50 PLASTICITY CLAYS O H ORGANIC CLAYS OF MEDIUM TO HIGH PLASTICITY, ORGANIC SILTS HIGHLY ORGANIC SOILS ' `- PT PEAT, HUMUS, SWAMP SOILS WITH HIGH ORGANIC CONTENTS �„„„ NOTE. DUAL SYMBOLS ARE USED TO INDICATE BORDERLINE SOIL CLASSIFICATIONS 14KLEINFELDER SOIL CLASSIFICATION LEGEND Copyrot I� Project # 60-00187X-001 I FIGURE A-9 APPLICATION FOR AUTHORIZATION TO USE REPORT OF GEOTECHNICAL INVESTIGATION COSTCO GASOLINE RETAIL FACILITY 35100 ENCHANTED PARKWAY SOUTH FEDERAL WAY, WASHINGTON KLEINFELDER PROJECT NUMBER 60-0018-7X.001 DATED December 9,1999 TO: Kleinfelder, Inc. 2405 1401h Avenue, NE, Suite A 10 1 Bellevue, Washington 98005 FROM; Applicant [State here the use(s) contemplated] hereby applies for permission to: for the purpose(s) of: [State here why you wish to do what is contemplated as set forth above] Applicant understands and agrees that Kleinfelder, Inc. is the copyright owner of the above identified report and that unauthorized use or copying of the above identified report is strictly prohibited without the express written permission of Kleinfelder, Inc. and Kleinfelder's client. Applicant understands that Kleinfelder, Inc. and/or Kleinfelder's client, may withhold such permission at its sole discretion, or grant such permission upon such terms and conditions as it deems acceptable. Dated: Applicant by its 60-00187X00]/6019R176.doc Page l of 1 Copyright 1999 Kleinfelder, Inc. TECHNICAL INFORMATION REPORT Proposed Cotco Gasoline Facility 5100 Enchanted Parkway South Federal Way, Washington Prepared for: osteo Wholesale May 22, 2001 Revised November 10, 2001 Our Job No. 6D76 !I-•f`j--oI QI511i. ENG3NE£RihtG, LANE) PLANNING, SVRvEYE14GENVi ONNAENTA. SERVICES 18215 72ND AIVENUE SQUTH, K04T, WA 98032 ■ (425) 251-6222 . (425) 251-8782 FAX www_barghauser ZOM TABLE OF CONTE' NTS Lo PROJECT OVERVIEW .............. . ............. I .............. . . .......... Ix} care I TIR WmKSHEET........,, ........ - ............................................................................................ irigiire2 3rrSj.00AT[0N.--- ............... ......... ..................................................... Hgure 3 DiUUNAGR BASIN S .............................................................................................. —, ........ Figulrc4 Solff-S MAI ...... ............... - - ...... ........ 2.0 (y)Nr)rrl0NS AND Rp.QuiRFmENTS sumMARY ...... ........... ........ .................... 3.0 OFF,%rJ17, ANALYSIS.................... ........ ........................... .. 4,0 IiETENTTON/DRTENTION ANALYSIS AND T)FSIGN ........................ ...................................... ..............4........b......-.—........... PAI;rr A - TSTING SrfF. HYDROLOG.................................................................................. -YDIROLOGY ................. 4 pAj�T B - jF,,V&.D ,oj -)ED, SYVE 13 ............................................. PART C - PERMRMANCE wANDARDS. ...... ............................................................................... PAWf D - Flow comm, SYSTEM ...... ..................... ........ ... . .............. I ......... . ... PAR'!' F - WATER QTJALTFY SYS'fEM ........ I .... I .... F4 ............... .... I ............. ............. 5.0 CONVEYANCE Sy4'i7EM ANALYSIS AND DIOGN ................ .................... ............... .........I................. 2 6.0 spFCIALREPORTS AND STUDIES ................... .......... ....................< 7,0 OTHER PEl0ffl'rS ........................... ......... ......... ............. 8.() NSIGN—..................... ........ TsC E .................. 9.0 -BOND QUANITfIFS, FACUITY SUMMARIES AND D-Fj(,LARA:f TON Or, coVENANT ............ 1o.0 OppRA:rjoNS AND MAINTENANCE MANUAJ .......... .............................. I.............., .......1....... 4) FAIlBIT§ � : lx 5xHMyr &-FHA MAP 5XHLBTlP §-SENSTT!¥£ AREAS #)L 0S nXHMT C - A RSSO S MAPS Exffm1lD-S&5TNlTCONNAISSANCE 2EL' 02I Exreff n-SOTI-s ]REPORT 11A Exiiwyr F-t£V]2L|FLOW CO Iko,CAIlmLA IONS 2 RXUMIT O-BASIC WATER QT.JALXrY CA C. LATIONS WOKS / HxmBr|3-p1 E CONVF-YAN H C&LCITA 1.0 PROJECT OVERVIEW 1.0 pito gCr OVERVIEW ,€'lre Projoet site is located ,%vilhill I limlion of tile, Sciclii vest quarter of section 21, 'lownsl3ip 2l North, Rauge4T t,'Wiffilme€ ceMet'idialt, City ofpederaiWay, 1<_tjig COUIlty.Waslringten. More sVccifcAlly, lllc site i5 located on it Nortlruast corner of the intepsedimi of i6th Avenue sulgh, also lcnowil as Enchanted Park -Way South, and South 352nd Street, 'late enclosed si#c icxratinn ir>a}� cici3icfS tlle: approximate location of the proposed site. The silo has currently been cicarcd of -,Ill vegetation imd has a pRrkiftg lot CO'lutrucicd over the majority of Elie site. The vacant ae e t on thec site: cousists of gravel and is a higher cicvalinn 111811 the surmullding streets. 'Flit site s lr�rtt csf a larger developiner�l �mmvn as West ("Im1pus Square, which was tlevciopecl in the late lgtl0s, with detctxtioo 3"d touter quality cicsigu 'tnccszparateci into the protect. lee tice i9�Os, a coalescing plate oiVwater scpEiratnr %vas installed upstream oft lie detention systemdesigned io the enti re site. `rho proposed project will consist of a rct�il gast�lfne facility ttlorlg with parking drive aisles, Msnciated landscaping, sd utility i�ngroven�cnts. T he subjccl ProPcrty irs aPP"Oxlnlatety 2 acres in size. Under developed couditiops, the majority Of [Ile site iviU ha paved combined with apprn>jfiate laWsc;apiug, as well. Alui i cl l)y tile, City of Feder :! Way. l-evcl ! Tlow Coat'.01.grid Basic and high else water quality rcquiFcmca;is shall be i nst iiutec[ for Ills project. `! he City has ind icated 11'4t f'ol' pre-devClnpcd culft"'ons, 50 pCrceril of the site sltpll be cuasidercd till gr�ess .md 5(? }ye��Cnl i epervious. The design for Basic 'Meter Quality is ulet 111mugll the use of it combined watkleteution vaui(. Tho design for high use ib aGitievc tl by using catch basin iJtseri5 with oil al)sudient med)a according to the 1993 King C'ctlr O, W(j.Tlriri'grrnt S1eaftrr8 Wertet- Design f#?frmud, No runoff from tlpslrcklm enters the site clue to the drive aisle along Qze east side of the site l3Hving all inverted crown which collects 1114off from lice east in a Latch basin and l}ipC conveyance Sys"' d! schn rging to thr, existing oiywater segelratoi and existing detention v;tult. 6076,010 UPYbOath] FIGUFX 1 nti al Service S King CnuntyDOpertmeltt of Develaprne��R7nviron m1tVt�RH�ET TECHNICAL INFORMATION RE(TIR part l PROJECT OWNER AND PROJECT ENGINEER Project Owner Ccstoo 1Nl�vlesaie Address 0 9 Lake Drive 1858cmah WA Phone 425 432-3284 Project Engineer _ JaV S. Grubt? Companp Ra hausen Cansvltsn Efl fne(3rs Irc, AddressPPhone ( t251 251-522� — Part 3 TYPE CAE PERMIT APPLICATION ❑ Subci"ivision:HPA ❑ Short Subdivision Cl Grading Commercial 1] Diller Part 2 PRO,ii`CT LOCATION AND DESCRIPTION Project Name Costco Retait Gasoflne Faoiiit Location Townshi 21 hlpr#h Rang 4 East SW 114 Section-21 Park 4 OTHER REVIEWS AND PERMITS ❑ VFW HPA ❑ Shorelino Mftnageroen! 0 DOE 404 / Roc -}"err [] DOE Darn sataty J Structural vaults EEMA Fioodplain ❑ OthOr U COE Wetlands Part 5 SITE COMMUNITY AND DRAINAGE BASIN Cor munity I~ettaaal Wa Drainage Rasiri Hbe€os Creak Pad B SITE CHARACTERISTICS ❑ nwe ❑ stream Critical Sifeam Reach ❑ I)epressltns/Swales ❑ Lake l3 Steep 5ies ❑ Elcod�Iatrt ❑ Wetlands ❑ e�l}S�S�7rifljB ❑ High Groundwater Table Groundwater Recharge ❑ Otbar .,art 7 SOILS Isoil Tape slopes s rig€nally Everett type o ils,, however, the sits has been littad U Additional Sheets Attached Part S 13EVELOPMENT LIMITAPONS REFERENCE U Cb. 4 - Downstream Analysis I.1 0 17 Additional Sleets Aitached Part g ESC REQUIREMENTS MINIMUM ESC REOWREMENTS DURING CONSTRUCTION 13 Sedimentation Facilities ,/ Stabilized construction Fntrance ./ Perimeter Runoff control C1 Clearing and Grading RestrictiOns El Cover Practices v/ Construction Sequence U Other Frosljon Potentiol Erosive VeIOGffies LIMITATIONISITE CONSTRAINT MINIMUM ESC REOUIREMENTS AFTER CONSTRICTION ,/ Stabiiize Exposers Surface Li Remove and Restore Temporary FSC Facilities Clean and R9move all Silt ai d Debris Ensura Operation of Permanent Facilities Ll Flag Limits of SAO and open space preservation areas U tither Part 10 SURFACE WATER SYSTEM ❑ Crass Lined Channel pipe System ❑ Open Channel ❑ Dry Pond ❑ ►Not Pond J TaRk . Vault Energy Dissipater ❑ Wetland ❑ Stream Infiltration Q Depression [ Flow Dispersal ❑ waiver ❑ Reglonat Dateniion Method of Analysis (GHTS CornpensattorMitigation of Eliminated Site Storage Brief Description of System Operation Rl a cortve nca s tern to wetldetention vautt atttt exastin owwater se arat txrhea to existing detention. Facility Related Site Limitations Reference Facility t_trnitalien Part 11 STRUCTURAL ANALYSIS I Cast In Place Vault Retaining Wall Rookery >4' H19h Structural on steep Slops ❑ other Part 12 EASEMENTS/TRACTS U Dfalnage t=asoment ❑ Access Easement aftvo Growth Pfotectlon Easement Tract Cl o ter Part 13 SIGNATURE OF PF10FESSIONAL ENGINEER t or a civil engineer under by supef++lsion have visited the site. Actual site conditions as observod were incoWrated Into this worksheet and [fire attachments. To the best Ot my knovViedge the information provided here is accurate. n e011a_011 [,ipsimull -l� FIGURE 2 SITE LOCATION • M VICINITY MAP NORTH FIGURE 3 DRAINAGE BASINS �!1 PRELIMINARY GRADING AND DRAINAGE PLAN (SOUTH) =—� Eui" 1 MATCHLNE SEE SHEET C5 .v L LF 1 n: 1 I a LEGEND p"W=D ram MIZE ❑AmkrfS ----467 ---- frfi{Pb; Mkw Si'4r nVAYN {YA'A1 lL fYe��CB f�tU�c Si�7T E1EK�flp1 ; _ PRwow "4A UUas ebtWk, W gMER SIA F _ RlVPOSE° slow SA wvL FAmr STCU MMVIE 36 ��� � Y59i 4S p STC rhTCH Lul ■ m Ey IQ nxN rxvI i km SV.'Wo FIXIDErr JUCR TE PMERT C=e1 R,D>a," Er�;E. n�iruT E E_ FTd wam %Km W mu ME71 F4+<zSOK hESE1TW is Fzelmlm. 9. ja POD- WN f rvXCT#v SEUIL BE MWED UMMY to i(Itma4Ei b:xT. !WPo]Y3�CVE W7/IAL �Ji�ll�l,� Wh ?Rf'A V (9V. T&Ml Nq: 7� GY 4- i AJ �yvs, , � G. ,*11 MATCHUNE SEE SHEET C$ PRELIMINARY GRADING DRAINAGE PLAT i7 rdy+ WDE spn nmro z _rwsHm W" c f9ti4'v9Lu B'PF.GC V.M l0 i9PXKM $10V t6 AVE 20 m Li Z sxSf�?3 71mt 92'd" 4 y LLj T .J s,En mxai arpl NSre _ � _ � _ � d Q CK67hL Of" rAlml smi[ � r SfF7AL7Et n CZSYG%EPE P.IYEVFM � � � CL NOTES f. !ae QX � sett xwu a_ 0.0 KD W I WCA Pa9n mTn ilw ie.7fk W Lrrr 7 wkmh7. Z O 9 w G i y'r 3 -K M N 4%3 8 C W r` K ,Lp <T ii le �Y 8 'li 4 friIsilk at 'UI.II Y yam, +T !+ LTEIt RL37 TYPk LNIVEMS 5100 jEtiP,HOLfS pgy,.3 2r0.6F 11F` Pr t - 24i05 i,7E i1 K.H,S 2t1.1a aE 1e DP E r 22S 1i 1'rup s.7sci5 Fr` aP ■ - e7r.11 wwn o 2a1.t7 3w Y 2kx 4MK t#7->b ad' aF ii - iin S5 W rid L. tww 51Aif 21&-M v M S. - 1A874 V IM 5E n "t-al lr Up SE .74L 41 y♦iµt 9:7_bi nDOW Y�T - 2a311 .,Wg 251. }t LM V1 1 = "Mti adOL" • 15A.i1 y 3 mg Yu.E719m=g Sp612.a; M 61 "kXT 7a7+E M%WL 'Em a, FLLr•1 Y71J17 ti[li� sUa4Y 25992 le t1P 7t - 9a 0e 1C o by « Li9 1G ,w OF S - W..0I U*541 b50. 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E4107 0 Go Z n Ob 0 g AC AC i- D a uj �me in 4 III I SA AO + 0MA�L • i � [,ti y :1 FIGURE RE 4 SOILS MAP Anin i i �rerraen r f:JF Alga Ew net lip At i IL•. �.` _l� 6� t �',.�sr 21 eta asa EaC. ! it ? ^+: EwC f 1 HA f13r Ux �' • hEn � — a '+Y EvB i!r aT AEr Arb }} iaR• `� •�~ r� �$ ^ter^a• b •` •� • 2rthr>- 1 AEB Ewc ISpl3 sk X9� ' Bit �1Va • • f VV s - 'q ftc •�T,e• � i i" a jam_.-• �,��iF � ' � + z-: '3. u'•` 'qts k SOILS MAP " NORTH .0 CONDITIONS AND REQUIREMENTS SUMMARY Y The -only S?FA conditions applicable to this portion of Elie project are that since the subject site will create more than 5,000 square fact of my impervious area; thamfore, surface water ranoff control And water qualitytreatrnent will be mquired acconlijig to the 1998 King Cmaily, Washiuglan S'rrrftice Water Design Manual. The }project site lies Vithin a Level I Flow Control area and must design tbo water quality fAcility to meet the basic and high use menus of the 1998 King Corr ily. ashingron Sarfac e Wafer Design Mari ual. This project proposes to do just that; therefore, Nve have provided Level I Flow Control according to the caletr hitions submitted herewith, as well as by providing a wet vault to meet Basic Water Quality t,wd catch basin inserts to meet the requirements of the high use site. Level I Flow Control matches the, developed peak dischm-ge rates to the existing site condition's peak diseliarge rates for 2- and 10-year mourn pedods. 2 (VOI6. D 1 Q [l I'Jlhglsthi ANALYSIS OF TEE EICriiT CORE ItEQUIltEh'EENTS AS DELINEATED IN 'I'Ell+'. 7998 KING L'0 U 77, WA SHINGTON S RFAOL WA TER DESIGN MANUAL Core Requirement Na. I: Discharge al Ae Natural Localram Hem nnse: lit accordance with this requirement, this project proposes to discharge runoff from on site into the existing detentloi) system located in the ccnlr.,d purdoa of she site, thereby discharg-Lag at its currently used discharge point, Core Regrrhrinew No. 2: Q,f=Sf3eAjudysit, lire {dent of this care requirement is is identify and evahmle off -slier drainaSe probleonx drat )nay be created or aggravated by the proposed project and defernilne approprfrtla rtterfsures far preventing aggravation of those in accordance will the requirerrrents of lire Kbig County Janos!. 77jis rare requiretrtent requires lire analysis of downsfrearu problems regidring special afleation. Respnttse Shire this project diseharge3 to gut existing detention system with an adequate off -site drainage system, an oMsitc analysis is not required by the City of Federrat Way, siliwe. we mv- not discharging store peak flow than was occurring during cx ling conditions, compared wish whal the sits: is going to discharge after development), Core Requirement No.3: FlowCorrrroL Vie intern of this core requirement is to ensure the ryrr'rdin um level oj-controlneeded to protecl do4Vttslre:ant properties and resources fiam increases hi peak and tr hinre of runoff generated by new deveioputew. Vie level of flow control varies depending on lacations of dmvrrsfream cvrrdifimis identified hi Cure Requireinenf No, 2. Respmtse. As indicated earlier in this roport, Level 1 Fluiv Coatrul is t-cluun-,cl by the City of federal Way, therefore, discharge rates will be the sam or less than existing runoff rates up to the 10-year storm event as derined by the 7998 King Courtly, Washington Stuface Water Design 2V vurfai. Core Require nient No. 4: Conveyance .Vst4rrt. ne imerrl oftirrs care requirement is to ensureproper design audron slrrrrfion ofenghtee-redcanveyance syslerrt el-onenix. Conveyance systems are nahrraf and engineered drainage facilities that collect, contain, ronvey, andptovide for lbe flow of surface and sfornmwfer. lliis core regrcirelrielit applies to the enXineered elements of the sysleni, prirrrarily pipes, culverts, and ditcheslckannels. Response: 'Phis project proposes to design a flew pigs system for conveyance ern site to convey, at a minimum, the 23-year peak flow, based on Lhe rational method using Manning's Equation. 711tis pipe system ultimately discharges into the exisft ewoaveyauce system to 161h Aventie South aver being detained through two vaults, 3 (476.010 u PoWath i f 7 Fore Requirerrletu No. S: Erosion and 8'edr rent Control. Me intent of uric rare reglrirerrlertt is fo premiI the trxrrrsport of sedirrrent to streams, ivetfands, fakes, drainage systems, aruf adjacent prrapardes. Prosicon on construclion sites can result in excessive ,sedirnent transport to adjacent praperties find rheir .surface iwaters; ,Se dirnvrit frarrsporf can res•idf in rricrjor adverse impacts such as flooding due to absineried drainage sways, smothering of xalwankl spmwrring beds, and creation of algae bloom in lakes. Response: The erosion and sedimentation cmtiol necasums outlined in the 1998 King County, Washington .surface Water Design Manual wi11 he utiI!zed for this project, including the installation or filler fabric fencing, lemporiryccaiistniction entrance, and cover measures. Core Retdrrirement Ma. C,• Maintenance and Operations. The imeuf of this core requirernre nt is to errsrrre Ilia the maintenance responsibility fordnaiirage, facil ities is clearly assigned and fhal these facififies swill be properly nraintainerd and aperated in perpefulty. Ruiponse: All drainage facilities rxn Ibe subject site are considered privale and will be urain(iiined by the property owner, A copy or#hc Operations a ndMainterrance Mannar submitted as pint of the permit application shall Ire retained on site acid shall lac transficrred with the property to the new owner. The. Openations and Maintenance Manual is attacliul hmwvilh, Core Keguireinent No, 7: Mnauciaf Crrrarawees and Tialiiiity. 77is lrttetrf of fins cure requ rerrrent is to ensure f tlianc of g uarantees are pasted to sufficiently Gently cover Me cost of ror'reifing, if necesSa y. and cuinplete subsfandarel drainage, facility consmrction work area wai7wit, for• hvo )scars ro .satisfactory f eiforenonce orid ltiairiteminve o, f thusenewly couslrac tell drainage facilities to be assumed by the City of Federal tarry for mairifenance and opercrfivn. Care Requirement No. 7 is also intended to ensure that a 11abiliq policy is provided which prueers file prvporicul and fits} City front any damages relating to the construcfion or rrtrli aenanec of required flovinuge f ecififies by a private party. RMonse: The owners of this project will txmst a 17ralnage Facilities ft.5toijtioix Site Stabilization Finaucial Gu=wtez and also a utinageDefectandMaiatenance,FinancialGuarantee,allinaccordance with the Oily of Federal'Way's requimments. Care Requirertlerli No. 8.- Wafer Quality. The intent of this core requirerrlent is to require an efficierit, cast -effective level of ivater quality treatment tailored to the sensiriviries• rind resow a prxalection Heeds of the downstream receivlrrg water to 1.01 ch tiie project site drains or in Me arse of infiltration, protection of Me receiving grounthpeater system. there are four spedfrc stwor qualify rite}tons: [lie Basic Water Quality Menu, Me Sensitive Lake Protection Menu, Resource Stream Protection Afeem, or [lie Sphagnum stag !Protection Menu. R spwisc: The high use site is also a water quality menu and Fs thee one utilized for this projmt since the project site currentlybas an existing waterquality feature known as a coatesciagplataollfwater scpvator. o, in addition to that existing facility, catch basin inserts are proposed For this projcci site that incct tltp, 4 61176_010 tMAXtYall,l 19 Requirements of a .High Use Site Water Quality Mejau. In addition, the City of Federal Way has mandated that Basic Water Quality be applied to ihis project. Thcrefore, ibis project proposes a combined wet/detention vault as the means to provide Basic Water Quality. 5 6076.010 [JPJlhgfathl ANALYSTS OF T'IMFX f I, SPIRCIAL RE, QUIRE, fllf L2 AS DEJJJSiJLJA i EM Ail JL JW1, 1998 KING C 0UNTY, IYASHINGTON SURFAC'L IVATER Df Sff.N MANVAL .Slr�ciai R�gr�iremrf�rt TVr>. T: OrTuyr r4c�of�ierT Arc°rrs' Specif c J?egRrrr�rrtcrrrt,Y, Respnnse: The 1998 King County. Washington S'rrrftice Water Design Manual is one of several adoplod regulations in King Comity, which apply to conformance hicontrolling drainage on a wry spcci [ic hasis. The subject propertydnes lie within the Hylebos CrcckBasis, howevu, d0ct ntion has lieea and twill be provided on site, as well as water quality that in are modifying minewhitt, and eve are meeting the intent of the CSty of federal Way's requirements for this sl#e. Special Requirement No. 2: Floodplain andflood wry delineation. Response: hloodplainand floodways are subject to intindation during ex1reme even is. This project does not include develupnietn t within the j 00-year tloodplai n of it stream as depicted on thr; f.GMA Floodway ;i ilp. SrrevM Re(lniremew N*. 3. FTr d Proier lion Pacilftres. Response: Devclo1)nr t sites protected by levees, rmimcnts, or berms requEre a high level of confidence in their strtjctural integrity a€jcl performancc, Proper analysis, design, and construction is accessary to protut agailjst potentially catastrophic consequences if such facilities should fail. The p1'Dject Site dons not nncet the €vqulmnncnts of this Spccial Requirement Na. 3 since it does not Contain or 11; not adjacent to a Class I or 2 suet€€n that has existing flnod protection facilities such as a levee, reveinnent, or benii. Special Requireniew No. 4: Source C'ontral lies onsc: This project is it commurcial development, therefore, it rucotg the, threshold of Ilse source control requirermnt, therefure, requiring water quality to bu iustitt€tc€l to l)wvcnl ranoff from being poffuted ba the dowastream drainat a course. jilt VE; ruquirttd Mcludc: Kccpijig the Storm drainage systemclean, stencilWg stormdrains, providiagaroof over Elie fuellag area, pavingtlnC rite] ingarea -%vfth cmcretc, installing as oilltivater separator, providing a-alcli burin inserts, temporary construction practice T3A P's and swecli parking lints at least truce a month. Special Requireinew No. 5: Oil Coniroi Z mionse: Projects proposing to develop or redevelop a nigh use site rat€at provide oil contrulin addition to any other water quality control its required by the 1998 King County, l'Vashingtmr Sinface Water - Design Manual. Such sites typically generate high concentrations of oil clue, to high traffic turnovcr or the frequent transfer of oil. ' hh; site does meet Elie definition of a high t€se she as detenn[aod by the 199E King County, Washh. gton Surface Wafer Desi n Manual. Therefore, we ai- pLwo6tig catch basin inserts %with €lit absorbent media its the method of ail control provided f`or this sltc. -6 6076.010 [IPllbglathJ I () 3.0 OFF -Sr, ANALYSIS 3.0 OFF-SrFE ANALYSIS 3.1 upstream Drainage Analysis Its the central portico of the site, there is an existing underground detention vault. The enti re west campus developntont drains to this delention vault. Drainage is collected within the development by catch basins and a pipe conveyance system. Prior to development, the West f_:ar spas Square was underlain by a combination of Everett and Aiderwood type soils. No runoff enters the site From the west, as there is a rockery on the %vestern property line, and areas to the west of'the site are approximately 10 foot lower than the subject site. The Only area that could possibly contribute muoff to th€s site would be from ilia development to the Grit. Most of thRE drainage is collected into pipe conveyance systems and discharge directly into the slotmwaterdetendon vault located in the north central portion of dais Site. For the purpose. of Ihis report. there is no off site or upstream drainage contributing to this site. 3.2 Orr -Site Drauwigu Ana lysis 'lea 0ly of Federal Way has indicated that for this project, the, design standards will follow the I998 Krug County, Washingran SinBace Wafer Design Manual, This manual utilizes the, KCRTS methodology of hydrological analysis. The City of Pooral 4T4ray has also indicated (bat Level 1 Flow Contrail shall be tke mlui red standard for new devel opment rhrh this site. The calculations arc comained willdn this report far the sizing of the level l Flow C ontr-oi facilities for this project site. This project prolxmses a conibinod wWdctention vault locatcxl upslrcam of the existing coalescing plate oiUwater separator; therefore, meeting tits Tgvcl 1 Flow Control and Basic Water Quality requirements. Please see the water quality analysis in the appendix of this report for the ealoidalions used to size the wet vault poll ion or the combined wet detention vault. As previously mmtioaed, an existing oilAvater separator is located just upstrearn of the existing detention vault that treads the entire West Campus Square development. This. project site meets the threshold requirctirmt of a thigh use site and i s an industrial site sub jest to an expected average daily traffic cou lit equal to or greater than 100 vehicles per 1,000 ultuffe fleet of the gross building area that is propo.5ed for this dcvclopntcnt. In addition, the threshold of a commercial or industrial site, subject to petraleum storage, and Ira usfer in excess of 1,SU[lgallons per year, is also met sine this is a gasoline facility. Ther+.Fore, tlhe (high use iw hodology of Oil Control Option No. 1 is selected for this site, which utilizes catch l)asin inserts in all the, catch basins subject to runoff from the high rise aleaas. 3.3 Downstresim Drainage Analysis The City of Federal Way has indicated a downstrm drainage analysis will not need to be determined for this project site. As #ire site discharges to an Wsling dcteadort system, which was idze l for the entire site, and discharges to the, existing conveyance system on Encharttetl Pa rlLway South, also known as Korth Aventie South. This do;vastmarrr system has been previously analyzed and shice. Ehc propmed project will reduce peak rates to the existing detentiorh facility, (lie downstreani system has been delermined to be adequate. 7 &M-010 [11Sgtath; 4.0 RETENTION/DETENTION ANALYSIS DESIGN z /J 4.0 RETENTIONIDETFWTION ANALYSTS AND DESIGN PART A - EXISUNG SITE HYDROLO YY As =ndoned previously, the City of 1~edeml Way has indicated that for pre -developed conditions, 50 per cult of [he site should lie considered till grass and 50 percent impervious. In addition, this site is being developed to u Idarately ediscir&je to an existing detention system located in the, central portion of the silo. Contributing Bashi Areas South Basin Pre-le►w,loped Area 0.5 AC. till V=s 0.5 AC. iwpervhxts North Basin Pre -Developed Area 0.5 AC. till gram O? 5 AC'.. impervious Post -Developed Area 0,25 AC. till grass 0,15 AC. impervious Post-Doveiolmd Arco 0.15 AC. till grass 0.85 AC- impervious I3lcase sce tltrr basin asap allacheed hare:with its -Figure 3 in Section 1.0 for the basin contributing to the de=tvntion systems uWer the developed conditions for the projecI Bile. PART B - T)]EM& OPED SITE HYDROLOGY As mentioaed previously, the developed condili(xis lire rnastdy impervious with si a1l itnnoitnts of pervious till Bass sorfam, Tlredilrereaces but ween peak tiaw rates between thci e;xisling cx ditious noel dowI%icd cow1hion s. in addition to ronoff volumas being goncrawd due, to tire, fact that tlicre is more in1peryink] -sski rt'acc1inder(levelopcdcondiiions, arc what Mermi I= t lie a mou nt of Clow mitrol vol 0Inc provided. Also, dlie to the, addition of 0,05 acres of new imptl ivious surrace title to roadway improvements to South 352nd Street %vllic11 hylrass tictet10011, the solidi vault has Iseen Sized with a downstream Point ofCompliance %vhich iocreased the size GFthe vault. please see attachedcalculations in I-.Ahibit -F for the methodology, the K('[ ]'.S ranoff time series, and the Level 1 t~low. Control calculations used to size the wet detention vaults. I'dIUI' ('- I"I'M iORMAAd[.1 STANDARDS As mentioned previously, the level of 11ow control being provided for dais project site islzvel 1. NOich meets the requirements of thct 1998 King Comay, Mishinglurr Suififee Water Design Manual, I.cvcl I Flow Control restricts the post -developed relcaw rates during, 2-year and 10-year stni'm events to the existing reteme rates daring the same storm events reclI)Ectively, based on the 1998 King County, Washington Srrrface Water Desigii Mannal methodology. See the calculations in Exhibit "F' which indicate a required storage vadttrne of 3,175 ctibic feet with a 2-year re [case of 0.I4 cfs and it 10-year release of0.I9 cfs for the south basin and a rvquired stor~dge volttme of 1,495 cubic foot with a 2-year 6076.0M lllfixiathj ' 7 /1, release of 0. [6 cls and a I Q-)Tar release of 0.18 c#s for Elie north basin. Basic Water € uality is being provided with the instiillatita3 of catch ba,9ja trlsWs to meet the requirements of the high use site. PAIUr D - FLOW CONTROL SY8'l('TM Please see the flans for the oxhibits of the flow control facilities and their dimensions. Also, see the calculations located in RANT F for tho orifice sizes that should match the plan, including computer printouts. PAIrl' E - WATER QUAIITY SYSTEM Plesise see the Mans rortbe location and sizooftheivaterquality facilities tludmee[Basic WaterQuulity requirements provided I>y a vet/fttentiou vault with bead staiage in the bo€lom of the vault to provide wdler gttality as dictated by (lie 1998 Kiyrg Counly, Mishinston .Srrtface Design Manual. In add iLion, pleaw see Exhibit G for the basic water calculations. 9 6076.010 UJAW31 it MNG COUNTY, WASIrrNGTON, SURFACE WATFR DESIGN MANUAL STORIVIWA` ER FACILITY SUMMARY SHEET �J T)cvcloperit I LC ;} i?ate_�C,, " - # ENGINEFIZ DT? EL.i '�cit Name " x C} ., 5 =a Name .0 -5 ,ft, o vu Firm . �� + f'{i i '� #' 1'" irin Address Z, Is Address ``i L ��•'� f, 'y T_ V Zr' Developed Site: Acres Number of lots Number of detention facilities on site. Number of bfi tmdon facilities on Site: _ pods ponds Vaults vaults _ tanu Flow control provided in regional facility (give location) No #loivcontrol required Exemption number Downslr m Drainage Basins linincdiate Basin A Basin B Basin C Bain Numbcr & type of %vawr quality faciiitie.5 on site: biofiltration swale (regularltivetl or condnuflu,� inflow?) combined detention1wQ pond (Wq portion basic; or laigc?} +- X cambixcd detention/ vetvault compost filter filter strip flo%v dispersion farm nuariagement plan landscape management plan oillwater separator (baffle or coalescing plate?) catch basin inserts: Manufacturer -. Pre -settling pwd pre -settling structure; I OMI.facturer flaw-splittcr catchhasin Major Bashi - )4 t � V ?"fit-! (f, sand filler(basic or large?) sand filter, linear (basic or large?) sand filter vault (Oasic or iarge7) stormwater wetland wetpond (basic or large?) kvetvault DES'I ON INFORMATION 11 DIVID�J' AI., 13 ASiN water Qua] t dcsi2 HOW t Water Qua #t�eatec# volu�lsc or vet 011d Vr ,, -; 1998 Surface Mau Desi%j Mauual nr, 4,a 'i i/. _.' KING COUNTY, WASHINUT IN, SURFACE 1VAT7,R DPSTGN MANUAL l) lCii INFORMATION, cont'd TO'1'Al�TWIVIDUAL BASIN Drainage 1}aAa(s) on-9 to area A Ali,, � B D Offs ite Brat tlj {�i3ti' Type of Story a Facility VA Live Storage Volume f 7 LF Predeveloped Runoff late 2-year f O Developed ranofF rifle 2-yCar l0-year {� , 100-year :4' 40 Type of Iestricter Size of orifcefrestrictor Nm 1 No. 3 No. 4 FLOW CONTROL & WATER QUALrFY FACILITY SUMMARY STEEET S 'I-C.H All detention, infiltrrtion and water quality facil'illes inmi if imle a sketch per thee following vriteria: 1. IIeadhig for the drawings should be kwated at the top of the sketch (top right-hand cormr). The laciul i p, should conLaim * Forth arrow (pkiint up or to left) D9# * I'lFtt name or short plat numbor Address (nearest) * slate drown (or updated) `Phones Dro fiers page, grid number 2. Label CBS and Mils with 1116 plan and profile designaWn. Label the control structure in writing or abbreviate with C.S. Indicate which strucimms provide spiII control. 3. Pipes— indivale: Pipe size Pipe le gib Flow dlreclion Use a single heavy weight fine 4. Tanks— use a double, heavy weight line and indicate size (diameter) 5. Access mada • Outline the limits of the road • Fill the outline with dots if the maid is gravel. Label in wri€ing if another swface,. b. Other Slandmd Symbols: • BollFtrcls 0000 11 s ■ s • Rip rap Qo0o v Fences --x --x --x --x --x --x-- 4 Ditches 7. Label trash racks in writing. 8. Label all streets wish [ho actual street sigei desihmation. If you don't know the actual street name, consult the plat map. 4. Include casements mul lot lines or trust limits whets possible. 10, Arrange all the labeling or writing to Yead from fe#t to right car from bottom to top with refcronce to a properly cricnicd heading, 11. Indicate driveways or features iliac may impact access, maiulerianea Or Toplacenient. 1998 Surface Winer Dcsim l 2nual n„ x - '7 .' f DETAILS SEC11ONS AND NOTES .._... wam _ r M PPSIM WME- - �, � 14 F' rµ�ype' x °ice w •p 3mum dim 119 E=MW yI W.�F TG / 16 ![" pr. sQ � f� lit kAj [ 4 r vxl r rxac aFrr roolo 'x <m fir A sc om �v�a Mfg to -�' �u+r Ilr�l _ Csxx.e � ia: wtala s� 6� . - - � � x•� �� nvi � _ ��"ssc � � � � � � ".� °6CONNECTION TO EASTNG SD SY3TW (SOUTH W01DEFe#'I" VAULT) - s s_• 7'1 @ r QVMAW + roru� -: ;....� ;-i:No = tip yll i rn 1 trt wu} Loow= 4o= >Ia�iaaar°ralreea _ MOWRtESSTMOTTC RRk fl � � �: :I: 'E' -- - -�- - - ��: ---• •r» •-- •t• - T [[ '- - - •l: - :i: :i'" - - :! tJS.;If.�I1 ON VAULT ��- - - - _ _ N4r ro Srrr- Ekes v -:i. - :yam _ rraarlsaD3Ile •, "=•-- •7 1, '� Fa ex victb 7turCt P't C �:_ -fG6�^ -�- .7. - - - - _ ,i..r. - :f""- •a.: -- - :1-•-----•=3 is _ 2L1{TPCN'BR:= 7DP •�- rSd'J -� - �. Rs ta3Y/� - ----:t'-::'::•:E:•::-•- :i:: - -,- _ - - - =iC+a4 - - .3 ]: • �iai='aa�t4iw 4� Fki►str: K-lilY i�GIM_ �/-� r-O��r�j Cw TO EJ`h31 CtHi SD SYSTIEM i - - - . ' W0 DE Wn0NVAULZ -tar�- - - FTi - - - 71 .._ . - .____•.- ' •ll]BaGll i1G1ikE IZdll�t HI {I •� • - �,_ %'�_ _ _ �A_---.- _ _ / T KMI M 111faw M91D04 1.10 EF e� - Mf9 W01DE-MiTM VAULT MOM = FUNO.E r'v m ww =� � Mto 7 s .� y+e• We ■ +rwx & AL osarruani roeef WAr RdfrwCEm ee a�assFn rrarL Aeol #UX9. rr eao�7r{/a�sry' peck"apn['r+g SKiT7E 7Q tGVi fEIR Or MAT t]AATKfl� � 2Y. ] D w m IY vm Ammo �'�~ it LWL 1 '} eurm CA IYUCCI OHrLEr 1ii9 D aNUE�t �aoeo G o rw i3' +� 71PE� • WM eca i E M MA r+n uc s.FRMiSMEaE 1U tvom F7 # w 1 v M - P rcmr rss� ][; Q Y' IE rr Sur zaeav F NA + 2 M j lie r tr 1eu7j 9 k 1-• ='...... r •i• -�-- - -- - - - z•.e.�, -T_� _i. _ •3•-- -� -----;-7---• - - '1 Qi� fi _ - - ^. �'rir Mars } - - - -- - _ r _ _- .... r FLOW EESTR M F� - - - - i •'� - f 7 r_ _.___ _r_ ___._ 111 _ F VAULT { - - OETENT�OFd g :r: :�: :c' :j: - - - - F - - _3` j ,c: j. :i: _ - - --- --"-......... - --- - •1 r6 fir. - NM i + mp— - = 1. - ___ •' • _ - is M• r •6[pirt - fl• 5•C• ___ 'it �763 DEI?ilrrl711- c i 8 __ — - -- f= - ! :3: :.: :�: - - yy - - - r ae' O`>Or .�_ :1 ''" :1: £ - r - • f � " isiais#r"e - :I "141A' i ter» -a r_ .��'. - - - '�iiFz - salrti OV i�� LI1QERL'i 7ICIy0E F1rr iS�ER IOW a OW iA7� AF•IPIM►�040 � J � Wy.S Nu i1 111': 3Ar0 P'p CCICKYF[ OFFMOUL WAY _ 3E WG�ENTM VAULT 0FO RRO mprm =I12RaIQA ^ + ;X a o�13 � rx tr vp of A P? � � s GRADING/ DRAINAGE~. PLAN 111f i a ♦ �P l � s -.— m A" 1 4}4 j r�!fir::. ;rig AST 1 air o m ! ]AL3a4 �:� - _;75TJ; . -:y 1 �� •-•ys: - .� -_ -1: ! t 3.w� N�TK 4/ i•�'1`' r a-' ram. 5 _L� r,��o', i iyL •• 1 ±r Eiptpc kkk <-L MATCHLINE $RE sHEEr 6 JO V W su 6 J n E.RS0.n 1� rIy C@ p IL TOE i el >:-xrua ,5 LF Ir- k& 0 Ji1% LE 1D P"OSPM f41AE8 MW COMM-�-- .--- I Cc ft" owm mom 11-M v,�/ sm +Dues fil rr' F.v:flmm Mew ((1.:NMCE .�,�� c� o a sa Ja aasT:ea soon¢ anvwa — 50--. 4mroc STM WM a4m 0 SILM7 Pa4ElW ems:. •. CORCFEW PAzoa p¢•' NOTES 1, ALL X"Y ;={ l BA;5M ZnAl PE LV w,—L6 VAM UIC , MPH f+`-L[M f[6 AhRM MW—Mf TnA WM. GRADING AND: DRAINAGE PLAN (SOUTH RD WaM J9PI91E7 €.EGEW- Ifow,mm f mti WO !V.W-f C+.►RTITTC ____ �61 _� _ EfETW VW WOO ES.DVXi J� FPW,Ya1.P Fea M ICFx 3f01 at?fF:CI S1IL PAIMAO 10 OF (030, 0-01%fi1.1ty. EM-FIR2 RL4t£it VW ••«•"•••••••� CNKRM OEm ScEE �•• - PAX"V, $IM XR4474E W P,f.fWM STOW CATCH RW M DQgMR: SMFU CKCH EMM PWLOr Zn 5wm RUZ FISEx {� 1 ASEMJ9 h�7 rXAI"T 7 DMO ON T6 SRSOE CA DMIKS91" AS. caFdaPiY=gm AW a 4EW)NM% K*R rJ Tw OF EIPLL Ts T-,1 qwx Al FACE Ct wi 1K NPR A FNf/M%k 2, AEL F�F„F VPM GXlaMB3ir 97a BE WHIM RFMRY TQ ME][NTM YXII. 1. ANN Id r C�.fCEI ESWA Mill K EQI+PifH LTFF1 CAOIT FOM rsrR,4 jc^t u . 61 1"T& STORM STFUCTURE SCHEDULE Q tAYbE EAR I& W I W ONX ME M -ate. l[resnp B LF 6' 90 0 R.OS S9l # �S MJ»[EfPx.VLRk C[YAl iPi�iZb.l, Wl VJ C H4 CX:iWRCE 611E SWi 6E dCf4C UD 4P SUN ! 88U 46 it c SU O Pm OL V FIR FF C m 4 2F w& 4AMN RW A PIC 11{l aQ MOUL &sl^itS+L. U--l"W 8 09 Q. 4 z O w UL, 5o 59 tr Ir so 0 I-= CACii EE;&F f !, TYPE L W OPM WATE, FX-210A 4S d-5 3 21 tF lr m P j 4 L Wd T MJI WUAY/T47PfTi'l4 VUL = NXI T NQI ZOAL YIN 1. . W vm S;aN i 6 TYPE E Tf OPEN ER`fa, Rqj-? 7 LE-MB 75 LF 13' SO 0 1.00 a DIM SEE TECFE EAi1- m U, 12' S7 OwuT MW n h J7 0 SD 0 29 WE FOR BW DVM Cgi[OOK TIO TON RWAX SYS Y_• id v llgeExrir UAf 4 11L T10.4RW S D C M M FKE CE W4L f" i1ffLfFM Wa FW= BE W 19 1>t• 94 pion. FYi-� ¢-es;,f m SO 4mw. RFF'7'Y m E-.W.t W5F 58 C14 WJr. A7. E-45A$ Q i a ,1 S. g�c PEMR arroF��u�aw" - I r cyr lm 3 i (0 f10.Ta: 5.0 CONVE YXNCE SYSTEM ANALYSIS I AND DESIGN S,II CONVEYANCK SY.VfFM A ALYSIS AND DESIGN Tho on -site pipes were sized by calculations perf'onned using the rational method with M-daidag's Equation and (lie precipitation rate of a 25-year design storm. King county's rational method from the 1990 King Counly, Wdshingtorr Sr a frrve Wow, Design Man ual was used and this i thod is s#iHaccepted by the 1998 King County, Wash ingfon Surfars lVater I)csipt Manual. Ileum sec the caiculations under Exhibit R 9 6076.010 iJMgaihl 6.0 SPECIAL R P M AND STUDIES 6.0 SPI,CIAL REPORTS AND S'rui) pleasC 5sm Rx1libit E for ibc sails repnrt for tWs prOj�cCI. 10 601olo €)jfNj 7,0 OTHER YER ff S 7.0 OTHER PERMITS The permits toquiied for this pmojcct iizcttide commercial. development, clearing and grading, itud building. III additim, a Washington State Department of `I`ramlx3rtation permit maybe requiTed to discharge rvrther runoff into the. state controlled system in 'Fachanted Parkway Smith, as %yell pis a T?f.S Permit. 11 607&010 V:aEd .0 USC ANALYSIS AND DESIGN �# 8.0 ESC ANALYSIS AND DESIGN I'm proposed imcasures providing eFosiwi control for the project ►vilt be silt fences installed along the downstream perimeter, a temporary constraction entrance, and clearing limits slvcified. 'Elie site is currently garaded, and cleared of all vegoiatioo for the most Vart, The erosion control measures specified will provide more erosion control mcasures over and Kbove wha[ is already occurring on [tie site at this # i 1ne. 6076.0tO IJJAgl 9.0 BOND QUANTITIES, FACILITY SUMMARIES AND DECLARATJON OF COVENANT PUBLIC WORKS DEPARTMENT BOND QUANTITIES WORD SHEET Project wale: � 0 '::;�6' 0 b 4'. --� 1 b 0 .5 _.. F Date: ProjedNo.: OQ —,!5rO QOD Site Aftess: '!r'Cr.ry Fill in those items wNch pertain to this project of-rd return to the Public Woiks Department Public Roadway Private On -Site ImDroven I Immovements Cleating & GM)Nfig LS Excavation & Enibankpneiit 7.00 1CY $ A.C. Payment JUG SY $ Cement Concrete Omb & Gutter 9.00 LF $ /L.-7,40 Ed Asphalt ('U0k 4.00 LF 01 _f... . Concrete Sidewalk 9,00 LF 1 6- Pipe 7,50 LF 8"Ape 10.00 1 F 12" ripe 15.00 LF 7r 3 '�" Pipe 16-00 LF �'Ipe 20.00 1 F Pipe 26XU LF ,)6" Pipe 40.00 LF 48' Pipe 50.00 1. F J So -Pi 65.00 LF $ 72" Pipe 80M LF Curb Intet 500.00 EA $ CB -Type I & H 750.00 EA 7-50 CB - Type 11 - 48' 1400,00 EA 4(k) CB - Type II -- 51" 2100.00 LA CO -Type 11 - 72- 3100.00 FA CB - Type 11 - 96' 4ODD.00 E- A Detention Pipe RMr 400.00 EA RestdctorlSeparator 12" 45G,00 LA ResWctor/Sepan, for - 15" 500.00 EA ResWctur/Separidor - 18" 600,00 EA Restric-tor/Separator -- 24" 750-00 LA Fencing (Armfid Pond) 10.00 1 F Rlprdp 17.00 CY ROCkefy, Cd1ArJF) & ECdOgy Wall 7.0() Sr. Concrete Retaining Wall 8.00 SF S Excavatfon for Porid 7M Cy J tnfilhation Trench 18,00 LF Row Spi-eader/Disper54an Trench 20.00 LF Trash Rack 200.0D EA Hiofiftratkw) Swale 6000,00 EA Subtotal 1 Y4? V fo FkTW Quzntitics Place Schedule & VYopksJiec4 t 4 2 ppnt! Qiq nlitiy+% Worle4lmet -- C-{mlirw,d- Silt Fr' icv !,ve;!irry{Muk.lS Temporary poled sta nd pipe CU Intemn 1'rotsction Quarry Simla f I1rl)rala Rock Construct)on }:ntranrc Pipe( i L• " Diameter ) i .00 FkOSYON f ;EDIM ENI ATroN CONTROL F'ACfI Y VIES PufllicRoadiway PrivateOn. Site 1a}ii�rnvetr�ert�s 11"P,raveet ents Subtotal � Iy _.r CI O0 & r Subtotal $ f ���+'� ! 7. teJeph rye NLimber THEFOLLow.rNl.fjw-cwAfATioovwIr. gFCOMPfETEvcyTiff C17yoFFEDERAL WAYPUgL-FCWORK4DF.PARTAIFIYT! PubIir, Roadway I m 1) rovem ents: Private On -Site Imps-ovements: Erosion/Sedimentation Control; SUbtotal $ CONTINGENCY (20%) TOTAL_ BOND AMOUNT 1::VcvmS)p0[K1 qi ianW ie5 {a •00.dcx a I'Nan1�,%ia•I�.'i1� .i'r�i� rfl���ilUC� .:X't•�r1•,In• •0 J1JNG COUNTY, J 1 , YYfYJ2 ING A ONE SkWACE T A r TwR DESIGN MANUAL L ,4TORMWA` I- It FACILY`lT SUMMAItY S11ERI' Developnuznf {J 0�, i c.Cl 1_.cx:ation % C f1 �. Gtr1 K w �] F]. ri-4 E,NGINEM - Name 3'*y Address I fiff.-in d A& 9-r--4-v -�r .IV A - q -� Z_ Developod Site: Acres DEVEI PMt Name rim Address qe)9 L-00jLi '✓ M - h mot/+$ - 0 phonee Number of cots Numberof detention, facilities on site: Number of iafiltmt:on facilities on site: _ panels ponds vaults vaults _ tanks tanks Plow control provided in regionat facility (give Location) No flaw control required Exemption number - DownstreiranDrainaP-o Basins Irnixiate Basin A Basin 13 Basin O Basin D Numbor & type of water duality facilities on site: blorllration swate (regularfweU or continuous inflow?) Combi€ted dete1qtion1WQ peed (W portion basic. or large?) 7 combined deteationhv+etvault compost filter filter S[rip flow dispersion farnx t&jtt,-%,entplatt landwape manageracut pku7 OiUwater separator (baffle or coalescing plate?) ` Catch basin inserts: Manufacturcr- �_ pre -settling pond pre-SOffing structum; MzMufaehtMr -- _ flow -sputter catchbasin DE.SIGH INFOR.MA Water Ouslity design flow Basin. sand filter (basic or large?) sand tiller, linear (basic or loge?) sand ptlter vault (basic or large?) Storiinv ter wetland wetpond (basic or large?) weftult liVDWMUAL B AST or ►aeloond Vr t 77 do r 1993 Surface wi;ler Dti4gu MMU21 Wing a �y KING COUNTY, WAS.HfNG'ITJN, S1 ACF WA'!' R D SIGN MAWAL FLOW CONTROL & WATER QUA€.XTY FACIJrrY SUMMARY SjiEj3T SKETCH All detentimi, infiltration and water duality facilities must include a sketch per the following criteria: Heading for the drawi ngs should be located at lire top of the sketch <(tIp tight -hand corner). The heading slicndd contain: North arrow (point up or to left) 0 D9tl _ fist. name or stx)rt plat number 0 Address (neareg) • hate drawn (or updated) - 'f flogs Prothers page, grid nutub r 2, IAM CRZ; and h+ R9 with the plan srrd proffiu dasigtbatit>n, Label dleor}rxtrol struetare in writing or abbrevirltc with C's. IndicaLe, which structums pmvidc shill Control. I Plpas-- indicate.: Pipe size PiN longth Flow direeliort Use a single heavy weight line d. "Tanks-- use a double. heavy weight line and indicate sire (diatnctcr) S. Access roads i On(lirte the limits of The road * Fill the outline whll Mots if the road is gravel. label in writing if another surface. b. Other Standard Symlx)ls: • Bollards s••• ■■aIr Rip rap oaooco 000POG PeNIM9 --x --X --x --x --x --x-- I Di#chefi >D 7. Labe.# trash racks in writitlg. S. label all stre cts wild the actual street sigh dmibmation, if ytiu don't Imow the actual street name, Consult the plat infip. 9. tnclode eftsetrrents and lot lines or tract liunits whcn passible. 10. Atrange ail the iabcling or ,vritirhg to react from left to right or from hntlorn to top with reference to a properly oricnted heading. 11. Indicate driveways or fmtures tlral may impact access, maintenance or rcplac urent, 1998 Sul race %WlerDmign Marpua] 9/1M f 10.0 OPERATIONS AND MAINTENA I E MANUAL 10.0 OPERA-TIONS AND MAINTENANCE MANUA], Since this project is utilizing a combined wetldetcntion vault, there is soErme maintenance considerations Ihat must bec'on-sidured, in add ilion to the requirements listed herewith, 1. Accumulated sediment and stagnant conditions may cause noxious gases to farm and accitmuhtle; in the valElt. Vault nulintenance procedures must Enect OSIIA confined space cuiryrecluirements, which includes clearly marking entrances to confined simm areas. 'I'FEis may be accomplished by lranfing a removable sign in the access risers just underneath the access lief. 2. Facilities slrould lac hispccted atanually. Floating debris and accumulated petroleum products should be, removed as needed, but at least annun ly. The floating oil should lie: removed from wet valEIis used as oilJwater separators Nvhcn oil acco inti lat ion exceods ow:,- melt. 3 ScAhnent should be removed wirers the one -foot (average) sediment zone is hill plus 6 inches, Scdinient should be tested for toxicants in compliance with current disposal requirements if land uses in the, catch=at include commercial or industrial zones, or if visual or of€actery indications of polkulion are, noliccd. 4. Witter drAined or pumped f3-om the vault prior to mmoving accumulated sedhMuts may be discharged to storm chains if it is not excessively turbid (i.e., if' water appears trail shicent whca betel to light) are# if all floalieble debris and visuid petroleum sheens are removed. Excessively Iparbid eater (Le:,, wator appears opaque when held to light) Should be discharged mlyafter the sculcable, solids have been removed. Maintenance requimments fbr catch basins inserts are as follows, In addition lu the farther described requirements included in this report. 1_ Maintenance needs vary from site-w-site Based oil tlro type of land itsc aclivily. implementation of source controls and weatber conditions. Catch Basin inserts should be maintained at a frequency reconunended by the manufacturer, but at least nxurthly during the vet season (Oc€obiz through April) and every two nion His during the remainder of the year. Note, during the first %Yet season, it is rccon=eadud that inspmdons bu casaied out every other week to determine if a shone r maintenance a yelc is nudcd for the particular site. 2. M iintenance. should include full mplaceEncnt or reEroival of oil absorbent material. Joi add ikon, when maintaining the insert tlae catch Imsi n sump should be i nspocted for scdi mea t accumulation. SC&Ment 5); Mid lie reproved if (lie depth of the sediment in the sl inp is ea€er thaa 0.5 feet. Inspection and EnainterEance lags shall be kept can site and Enade ,available to City inspectors on an as needed basis. At a minirnann, the mi6ntenance logs shall 'include (lie: following information: date, type of mieintenance performed, name of persons perfornfing the kvorl{, and signaltire;. Persons conducting maintemance activity should wear rubber gloves for heal€b and safely Mlectioa while handling used filter =dia. 14 W76.0IU Wftw.111h] 1L 3. The operation and maintenance instructions firm the catch basil iuscrt ma nufachirer shalt he kept %vith the maintenance log. Mannfaclurr is instructions shmId include installation, removal (including safety iuslruetions), cicauing, and mplaccmmnt (Enclvdiing a practical Imam of determining %vlrcil Ellc Imit is in nm] of service), and media dispGsal guidance (including decanting of liquid wastes). 4, Owners should following the manuFactvver's instrnctions for decvralering filter Media, wideb varies dcliending nit the bAw of unit. generally, catch basin inserts that drain by gravity can tie dewatered in place during dry weather. if an owner is unable to perform mol1ti1ly maintenance because there has not been sufficient dry weather, the maintenance period may be extended up to an additional. two weeks. if, by the end of the additional two weeks, them has been insufficient dry weather to allow dowatoring, the. owner shall make other arrange=nts fordewatcring the filter juedia. Such arrangements cold include the use of a crtMmcrcial scrvicc, cic%vatcrijlg tllc insert in a %Wrr tight container, or nther inethods that MCC't cl}v'sron111clital reguIalion S. Media should bcf d 1,sposed of hi accordance with applicable regulations, 'including the Seattle -King County Department of Public Health Solid Waste Regulations and the. Washington State Dangerous Waste regulations. In mirst cases, dewatcrctl filter media maybe disposed of as solid vv"aste. 15 6076.1n 10 (J!lt,y 9011 APPENL)ix A MAINTENANCr STANDARf3S MR PRIVA'1T.I.Y MAIRI'AINE-D D)tA]NA40P—I ACILMES NO.3 - CLOSED DE rENnON SYMMS (PIPEwANKs) Maintenance CanfpCi�ent Defect onrlfiions 1Y�iG iVlaf�ienarlc� fs �gc{e� Ravutts Expected When } Maintennnce is Perforated Storage Area f'lu�ged I3irvarits Dee h Ef or ice. Gres snMon of a vc.nf is blocked at vents free of debris and any paMl with debrls and sadlanent sedwerft Cebris and AccuftMated sedimetst depth exeeeds io% of 1h.0 AM sediment and dobfis SG.dMent diameter of the storage area tor'/. ler*ih of storage remcmed frwo slorage area. vault w any p oint depth ekeceds i59A of diarnoter. FxampEa: 72�nch storage tank vakoufd requife cteariing When sCdirner{t teaches depth of 7lnches for nwFa than ii length of tank. Joints $ehywa Any crack afl&Mng rnatedtd to be franspouted Into AN joint behveett tank lope TanklPipe SecGan racRity sccfssons are seated Tank Pipe r rtl Any part of t2nWp1pe is berit ogt of shape more Than Tanklp>pe repaired or replaCed Out of Shope 10%of d's design shape to design, blarth4le Cover Not in PEwe Cajer Is missing oron'ifparl3alty in pfaca. Any open Manhole is efosed. manWe requires n-qlrflenanc$, I naltirsg Mec!IMISM Cannot be opened by one rnainlenant;e Mechatlfsrn opens WIM proper Mec31art1s Nct Petson 1M1h prober 1 Ws. golfs Into frame, have lass teals. WoddN 1h8n inch or !tread (may not apply to self -jacking Ilds,) Cover Diffacuk to One r4alnlenarreo person cannot remove IN after Corer Can be removed and Remove apf:rlylnq $albs of Rift. lotent [s to k-ees) cover front reinstalled by One wfrotenance Sedans off access to ozarsilenarsco_ persort. Ladder Rungs f y County Safely Me ansvor maintunance person Ladder rrtools design standards lffrsale judges 1hil !adverts unsatfl dug to snissiag rungs, 00M Maintonarm person safe rnrs3ff"eni. rust, orGracks, access. Falch Basins Sec -Catch Basins? SlarWards No, a Soo 'CaiCh Basins' Standards Fin. 5 1998 Surff r, Nate( Dcssgn M2nufyl A-3 911l98 Al'1'1`NDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FAOL1TM-5 NO.4 - CONTROLSTRUCTURE/FLOW RESTRICT0I3 intenance Delect COnditlon When Maintenances IS N"ded Results Expected When n1ponant Wihlenance Is Performed Genera! Trash and Debris Mlance between debris buildup and bottom of All trash and debris removed. {lnciUdes Sedimerd} orifics place is less Man 1-M feet. Siraolural Danr tge Stnictum is not securely atta died to manhole wall 5iructwe securely attached 10 and ou[tct pipe st=twe should support at least wall PIX] outlet pipe_ 1.00o lbs of up or down pressure, ' Sintclure is M in Vfxight position (alfow up to Stmotum 6n correct poslllon. 10% from 1Aumb). Connections to OUVOI prpe are Plot wateil'rght and Cor nedont to mAel pipe are show signs of rust, water Vght; stfrlclure Wolfed or replaced and mtks as designed. Any holes—o ter than designed holes -in lha Stfmture has no hufes other stim1ure. Than designed moles. Dlearroril Gate Dol"agett or missing Cleanout gates is not waletliglYt or is missing. Gate is walarlfghl and works as • dasignrsd. Gate cannot be moved up and down by one Gate moires up and dmm easily fnalntenaww p+r* ml. and Is wateolgtd. Clain leading to gage !s rnlsslrtg or {lamaged. grain is in prace and vwwks as designed. Gate is rusted over 50% of its suriaca area. Gate is repaired or replaced to meet design standards.. 01itice Male Damaged or Missing Control dQW01a Is Plot working properly due to plate is in place and wotirs as massing, out of place, or bent orifice Vitale. designed. obslmolions Any try. debris, sediment, or vogetataon Plate Is tree of all obsiruolloas bl!Kking the JAMB. and works as designed. Overflow Pipe obslruelEoas Anylrash to debris bk4[:rlg (or Ijawinxq tits Pipe is free of all obstruclians potenfal of bivcldng) $tB owsrtlow pfpa. and woft as designed. Niarlll06e See "Closed Detr ration Systevne Standards No. 3 See "Closed DeleMon Systems' StanWards No.3 Catch Dwin See 'GlaIch Basins" Standards No. 5 See'Catch 139S1rls° standards Flo. 5 9/1198 __ 1999 Surface Wafer l7eslpn Manual APf'ENDM A MAINTENANCE STANDARDS FOR I'RI;IATELY MAMi•AINUD DRAINAGE FACILMES NO. 5 - CATCH BASINS Maintonanoe Defect Conditions When Mairitenance is deeded Results Expected When component Maintenance Is performed faeneral Trash & Dabris gash Of derri8 of Moore than 412 Cubic foot Which is No Trash or debris looated (Includes &Ddimenl) located Immediately in front of the Catch basin immediatedy In front of catch Offing or is blooking capacity of Ow basin by basin opening_ emote than 10% Trash or deln;s (in th[i basin) t l exceeds 113 the No trash of debris in th$ cat ,depth from the bo iom of basin to Invert Me lovrast Iaasin. pipe into or out of life basin T(8$h Of darts in any Inlet or outrot prps blorking Inlet and outlet pipes free of more th&n t13 of l fs height trash of debris,. DOM arlmals or vegetation limb *J's i generals No dead aarnais or vegetation Odors that cootsi cause compraInts or da►Vemus present +vwlin tha catol) basin. gases (0.9., matharle). Deposits of gaEbage exceeding 1 cubic foal In No candilion pres,erot which volume would aftracl Or Support the breeding of insects or rodents. Stricture Damage to Comer of frame exlends morc ftn 3M fa i past Frame Is even mft curb, Frame andAm Top Saab curb tape into the Sweet of app&cablej. Top slab his hcics larger than 2 square inches or Top slab is Irse of holes and cracks wider tf an I A inch (inient Is to make sure crack% all material Is running into basin), AMMI not sitbina flush on lop slab, i.c,, separation Frame is sitUng 911A On top of mire lhan W4 inch of 1ho fraa* from the top slab. s3atx Cracks In Basin Wallsl Cracks uidcr than i12 Fatoh and "or than 3 feet, Basin mplaoed or repaired to Bottom any evidenea of SOP pMgdes enlering etch basin design standards. %row -A crocus, or rnarolenarrce person judges that shtralure is unsound. Sed`rrnentr Mlsrodignmant Cracks wider than 112 inch atltl longer than 1 foot No Cracks more Ilion 114 inch at the Jo[ot of any inlatf outlet pipe or any evidencg wide at thn jorni Of JnfeVoudet G` pail particies entering ca" basln through pipe. CF- 4*s, Basin has more Than 1 inch or has soiatod more Ihare 2 Inches out of atignn ol. Basin replaxd or repaired to cl"9n standards_ 1998 SU faoc Water IX -sign Manual A-5 911 M APPENDIX A MAT]I+nENANCC STANE)A1tUS F•DR PR VA'!'•> LY NTATNTAINE-D DRAINAGE FAC[LUMS N0, 5 - CATCH BASINS (COAFTINUED) 1 Sinlenance Detect conditions when Mwntonsnea Is hfeeded Results Expected Mien .-smponnnt Maintenance is perlormed Fine I- mrd Presence of chsrnlcats 5+xh as natural ga% Oil end No t3ammable chemt raEs "some. pfusonl_ Vegetatlon VP-getal'sOtl growing across artd blacking more than No vegelafion blociang opening 10% of The basin opening_ to basin. Vegetation grm-fing Irl Inlelloacl[ct pfpa kokats Itral is No vagetatibn or root growth mom than six 3nches tall end less than six fn h" pmsanl. apart. PoilUlion Nonflammable che+rnkmis of mra than 112 c c foot No pollution present othsr Than por three feet of basin imp, suffaw film. Catch Basin Caysr Cover Not in Place' Cover is missing oroflly partially in Nace, Any open Catch basin Onveris closed catch basin requlnes maintenance: LockirV MeehWsrn Machanism cannot bo opened by On rxtalntanance Moolmrsrm opens wilt proper Idol WOrl A9 parson WIM Ixoper turfs. Bolls Fnto frame have less tools. than M InCh Of thFead. Cover Mcatlt to One rnahlenarace person cannot remove lid after Cover can ba rerrawed by one Remove applying 80 lbs. of hft; Intent is ka p Dauer from maintename person. sesGng off access io rnatMenanee. Ladder Ladder Rungs i.rrdtler is unsafe dale to till W sing rungs, misalignment. Ladder meets design standards Unsafe rsrst, cracks, or shads edges, and allows maintenance person safe access. Metal Grates Grate wills opening wider than 71a frlaff. Grate opening netts des3go (if Apptieabla) standards. ] Trash ante! Debris Trash and debris that is btocft more than 20% of Grate tree of Irash and debris. grale surface. Damaged or Grate InNsIng 4f broken member(&) of the t Mte. Grata is In piace and maels Missing. design standards, NO.6 DEBRIS BARRIERS (E.G., TRASH RACKS) Maintenance Defect Condition When Malotennnee is Needed Flestdts. Expected When. Components Malntanance Is Perforravad. General Trash and DOM 'E rash or debris Thal Is plugging more than 2G% of E larrier clear to roccive cap3cify the openings in the barrier. 1lorsr. Uatat fDainsiged/ Missing Bars are ben[ out of shape more than 3 lnvA*s. Oars In place Mh oo bands mra Baas. than V4 Tnch. Bars are TmissIng or enure barrier rl'Itssft, Bars Tn place amord nq to design. Bars are to we and ratst is causing 60% da#efipralion Repair or rcpface barrier la to any part flf barrier. 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O �.., ii €s � +••� � 3 Ci � 'V� ;f] � siv � � G a � u r.l 3 v `L } i , 1 a 4-N k o ._ V% "� CD y ah >+ 73 D Fi 0 HP a C360,0 � r C es v: i O C M 0 A Y c❑ ri ° •Fa Q W ca R w . 4 4 y�r spas yy� v o P o r3 r4 4 ca � r� CEO C�.i w vlt cn z O .54 C E O {] GI qv E '� �.. � 4 {/�j•, �i � � ^tea g J � � � q ma..4 s 4 � R 331 cs O] ih s O 2 ',-. J- c r• a Q a �s r r a � O 'a 44 � 3 M WY c L � cz O •• V C cm iY R c t 4• y •Yi a o F" o •4:3 i--. 4 ea C v O b• c t. 915 I# r Y `� LLLi111111 ' �j O LZ '0 4V c ej �{i .� S~Y L C r v p Cc 0 _ c.. R iT •O r r - o �E.0acf Si `} c Q L sysy $ re t as p> C r o S O c X C ?L Q A Q 0. r� u RPj' r " r V? V 3 +'n ea O i= b � � O Ci t7 t; ksF 0 a���. _ems r a 1 3 `O `x z a a ? ' Lm r� 1 0 a�e02 se rr ze i o a E: tb $cs c °� a' •vs yr ` .ram. G, 40 ew 1 .44 ea w a d vi o 24 C J O f. �p w� 44. p C �? 0 , y as tQ4C` 5� • r Wr 3`��Ci v +rt... Opp C N � � O H V J Q kn � r�r ell ti /fy/ F j, F r � W ..` T. Lk O •C� is pJ ref ,.,,a ji '•i��r �'y 4 ,t.• ro o •� c Er e Q G � a u v,'_, Y o i Q y a i U r r S7 c - C {} Q L�? 4 •CC�� yyrr�� _ •jq 0 go tD yyy • G FVQ V ti U C • V6 eS ;x •y p C CL �p 4 b l+1 t+l ac o c c Mg 12IX �h �J;E 10 ~ X } '�Ac 7 P� !++ O W IZ v � � G ' C. i w r r. 0 �r a � p C l'J w1 _ iA a' 7 A 0 tl 06 a Q "3 zi 7i Q .3 1� •-i h 3 � ? C. 9: to� n ;lk :i e "S l7 71 0 0, EXHIBIT E SOILS REPOWf 1H KLYINFELDER Geoteelm ical Investigation COSTCO Gasoline Retail Facility Warehouse ##61 35100 Enchunied Parkway South riederal luny, Washington Prepared for: Ms. Ka(hy Nishibira, P.E. OSTCO Wholesale. 999 ice Dsive Issaquah, WA 98027 Prepared by. Kleinfelder Inc. 2405-I40th Avenue, NE Suite A101 Bellevue, Washington 38005 Telephone; (425) 562-4200 Facsimile: (425) 562-4201 12f10199 C-npyright 1999 I leinfelder, Inc. All Rights Reserved This 11MMe.sl sss.5 prrpared for sua only tip the Olear. ulsly for the purposes misled, and tr'iNa a rtwo=ble diAe from E..suanre. N"- rammerdsf3 "14-C*11orwl and ssica0c Wit of this r+epwi by rcgalaterry egentles Is pegarded as a "raFr uW' and aat a rialatlon of cnpyrlght. Replaletr igcades may make gdd3t1oa2l cmpies of fls doeamertt for lrticraal use. Copfies avy also be made arailabic to the pOlit as tequirM by law.YSa reprEnt must a&nowledge she copytight 1od indicate That pcnnissivn tia revini has bceu rettivtd. TABLE OF COWENTS 8J0Introduction .......................... __....... ........................................................................... _......... ___] 10 Planned Construction ................. ............................... _---'........ ................. .._--'................... � 3.0 Field and Laboratory fxvooGgationm..................... .................. -...... ..'~........ --........................ 1 4.0 SurNaccpnd Subsurface Condit loes-_-....... 5.0 Eagmeer&|8Analysis and Recommrndations ............................ ....... _-..--__._---__................ 3 General _,_~___~-~~.~~~.~~~~~...~.~~'~~~~~~~........3 SitePaiingwadUmxdhig-..................... -..-.................................... -'_'---.................. ...... -'--~3 Exmwvanwb///ey............... ------..---_-.................. ....... -.......................................................... 4 TemporaryExcawwvan8tobWity.—..-...... .'............................... -.................................... ............. 4 StructuralFill and Compaclion .............. ..................... ............. ---- ............................................... 4 Fixumdzde,ns............................................. ........ _........ --,_—_-_................................. .............. 5 Asphalt C*nem*aPo,nmwnvxSecrionDesign and Con^omw«mh,n........................................................ J Portland Cement Payment S*o6^nDesign and ComsrrmcWon.----_—_----_------_------7 SoilCarr*xiom............................. ........................ ........ -........... --_--....................................... B 6.0 Limitations ............................................ —........ _--------- '-...... -_-__-.......... ......................... W 7,0 Additiowil Services ............... ...... _............. ........... _......... .................................................. 9 APPENDICES \ . , Appendix A; Figure A-]: Vicinity Map Figure }\-2:Site Plan R�=nre A,3:f}mtiugLog B- I Figumm A-4�B' Log B'2 Figure A-5, Boring LogB-3 Figm���.Boring Log B'4 Figure A-7., Boring Log B- A-8, Boding Log B-6 Appendix B: Application fGr Authodzation to Use *0-09197MOm$019R176-60C Cop»dSM 1"9mu°infeudeir, In,.. Page i of i 8 1.0 Introduction This report presents the results of Klcinfelder's field investigation and analysis perfonned at the subject site to aid in the design and construction of a proposed retail gasoline facility at the existing COSTCO Wholesale store in Federal Way, Washington, as indicated on tiro Vicinity Map, Figure A-1. The purpose of this study was to develop site -specific information and recommen d at ions regarding the planned retail gasoli ne. di spensi ng facility. The work performed for this investigation vas authari2cd by Ids. Kathy Nishihira, P.E. of cos'rco Wholesale (COSTCQ) and was conducted in accordance with our proposal stated November S, 1999 and our Novernber 24, 1999 revised proposal. 2.0 Planned Construction We diseussed site development plans with ?v1s. Nishibira and Mr. Chris Ferko of Barghausen Consulting Engineers, Inc. (Barghausen) and reviewed plans prepared b Bnhaasen dates[ 10l15/99. We unders[an d that the parking area west of the ex#sting COSTCO stare and south of the existing Olive Garden Restaurant Will be utilized to consist a retail gasoline dispensing facility. Figure A-2 presents a proposed site plan. Planned construction for Parcel 1 was not finalized at the time this report was written. However, we understand this parcel may be ttst!d for parking anchor a single -story light structurc. Planned construction for Parcel 2 includes a free standing canopy covering three service islands, a controller enclosure, and three 20,000-gallon underground gasoline storage tanks. We understand that the bottom of the tanks will be approximately 20 feet deep. We further understand that Portland cement concrete pavement is planned within the, fueling station area as well as over the underground storage tanks. 3.0 Field and Laboratory Invesligutians Subsurface soil conditions within the planned tank and fueling station areas were investigated on November 23, 1999 by drilling six irorings (designated B-1 through E-6) at the approximate locations indicated on the Site Plan, Figure A-2. Two borings were drilled to a maximurn depth of about 23 fact below ground surface (bps) in the tank area (B-1 and B-2, Parcel 2). Four additional boring were completed to depths ranging between 7 and 19 feet below ground surface (bgs) in the fueling area (Marcel 2) and northern p,-mcl (Parcel 1) of the site. (See Figure A-2 for parcel locations) Logs of the subsurface conditions, as encountered in the b€rrings. were 60-001S7X00116U19ii176.doc Page i of 14 Copyright 1999 Klein reider. Tat_ f+f YF Fl ki FC I t�vi ')Ares: 1 Anil, A.......... RIC C..:.- A 1/1S n-IF...- imA a4ffIrl[ F—Cl r/-. a nr fr N rr� •tins i recorded at the time of drilling and are presented on the baring logs, Figures A-3 through A-8. 11 key to soil symbols and terms is presented on Figure A-9. DriHing was accomplished with a truck -mounted, hollow -stem, auger dull gig equipped For soil sampling. representative soil samples were obtained using a standard split -spoon sampler driven by a 140-pound hammer free -falling through a distance of 30 inches. Sampler driving resistance, expressed as "blows per thv last 12 of 18 inches of penetration " is presented on the boring logs at t11e respective sampling depths. The samples were classified by a field geologist, and representagive portions of each sample were packaged and transported to our laboratory for further analysis. 4.0 Surface and Subsurface Conditions The proposed COSTCO Wholesale Warehouse 461 Gas Station Addition site is comprised of a northern parcel (Parcel I) and a sonthern parcel (farce1 2). Parcel 1 %viil Likely be developed for parking and/or a light structure. Parcel 2 is the planned location for the proposed retaii gasoline dispensing facility, The parcels are bounded to the north by the Olive Carden Restaurant, to the west by I Averrue South, to the south by South 35Z' Street and to the cast by the continuation } of the paved barking area for the Federal Way COSTCO warehouse. The southwest portion of it gravel and asphaltic concrete -paved parking lot for the Federal Way OST O store occupies the site. Concrete curbs and planters are located along the north and east sides of the site. These planters contain trees, small shrubs, and bark soil cover. Subsurface conditions at the project site are generally consistent between Parcels l and 2 And consisted of the following soil units. • Asphaltic Gravel Paving (Parcel 2) or Sod and Topsail (Parcel 1) were encountered to approximately 0.5 foot bgs in each of the six borings, ,Fill was encountered below the gravel or sod/topsoil to depths ranging from 6 to 12 bgs feet in all boring except for B-1. The fill consisted of rnediurn dense to very dense, silty sand and silty gravel, with occasional lenses of sandy silt. The fill was probably derived from the undertying native soils at tine site. • Alluvium was encountered from. 12 to 19 feet bgs in Bodng 13-5 and 8 to 15 feet bgs in Borinb 13.6. The alluvium consisted of medium dense silty sand }vitll gravel nod tracts of Organics. A relict topsoil layer, consisting of soft silt, was identified in Boring B-5 above the alluvium from 12 to 14 feet bgs. • 'fill was encountered beneath the flit in Borings B-I through B-4. The tiil consists of very dense gravelly silty sand with occasional cobbles and R-0R M00! AW19ti 176.doc Page 2 or 10 Copyright 1999 Kleinfelda, I= 0 Ki FINFFi rsr# 7dnr, ldnth A-.- nee A td-0 rx..R.+.. %MIA errors ra po cr.T .vmei im-yeh rc� ..iris i, boulders, Till likely exists beneath the alluvium in Borings B-5 and B-6, a]though we slid not confirm this dudng our exploration program. Droundwater was e=ountered in Boring B-2 at 16 feet bgs (seepage only) and 20 feet bgs in B-5, and B-6 at l2 feet. ffowever, it should be noted that groundwater levels will likely rise above the current elevation during periods of increased precipitation common in late winter and spring. The boring logs presented on Figures A-3 thrcugh A-8 should be referred to for more detailed information regarding the soil and groundwater conditions encountered. 5.0 lE ngincering Analysis aml Retornmendations General Based on the results of our field and laboratory investigations and previous knowledge of the site, it is our opinion that the site is suitable for €he proirosed construction provided that the recoi meAdations presented in this report arc complied with. N general, sinac111-re foundations may be supported by con vein tjanaI continuous or f;pread- type footings established on the existing scarified and compacted medium dense to very dense fill or native soils or approved structural fill. Furthermore, all Portland cement or Asphaltic concrete pavements rnay'be supported on the existing medium dense to very dense fill or native soils or 31TUcinral fill. Specific recornmenda#ions re -larding site grading, structural fill plaeemrrit, excavatability and temporary slopes, foundation and pavement design are presented below. Site Purrtrg aPjdGrading Within .areas to receive improvcinents, the existing asphaltic gravel or scud and topsoil should Inc reinoved to expose the underlying soils. Additional excavalion should be performed to remove fine-grained soils (referred to as lL in Boring B-1) and loose Fill soils. The excavated asphaltic gravel paving, granular fill and native granular soils may be stockpiled and reused as structural fill provided that the asphaltic gravel paving is thoroughly mixed with the granular fill material. Alternately, thr- asphaltic gravel paving can be discarded and the excavated granular fill can be stockpiled for future use. Within the controller enclosure, fueling station areas and all areas to receive pavements, the exposed soils should be scarified to a "nirrum depth of S inches. The scarified soils should their bo brought to within plus or minas 2 percent of near optimum moisture Content and compacted to 8 tninimUm of 90 percent of the maximum dry density as detern&ed by ASTM- D 1557. b-00187X00I 6019RtMAtic 'Fade3of 10 Copyfioi 1999 Kkiafrlder, Lsc- ]C IF IN F F I I)i R 7dO1 1401h Avmgad, NF 1;uhi, A 101 IiA"Lie wA i1F 0n'C 1475] 567.A70D 14JS] 567--1701 fax Ereavalability Based on the borings performed in Idle planned tank area, we anticipate that excavations to the rcquir:ed depth can be achieved with conventional excavating equipment. Excavation in dense till may require special cguipmrmt such as a Caterpillar B9 with a single ripper tooth. The contractor should be prepared for excavation of soils containing cobbles and boulders. It should be noted that groundwater was encountered at depths ranging from 16 to 20 feet during our field investigation, and may be encountered at shallower depths depending on the time of year that construction begins. Temporary dewatering may be required in order to install the underground tanks. Ibe contractor should become satisfied that the conditions to be encou-meted and the type of equipment and dowatering methods are best suited for these conditions. iyen the groundwater con(liIions pre -se -at and tlic plaits to install be!ow-grade tanks, appropriate design Consideration should be given to resisting potential buoyant forces acting on the tarries when the tanks are only partially frill or empty - Temporary Excavation Stability The contractor will be responsible for assuring safe worki-ag conditions within excavations. Cast or fill side slopes shall not exceed 2R,IV, unless otherwise indicated ort the drawings and apfimvr.d by the local building authority. Snoring should be constructed in accordance with WISHA requirements, Structural Fill and Compactiart All fitl placed with the project should be structural fill. Stntctural fill may consist of previously excavated granular fill soils iitcludiag asphalt if property pulverized and mixed as discussed previously, or granular soils meeting the following gradation criteria; ,Sleye Size Percent Passing 4-inch t00 (No rocks or lamps greater than 5 inches) # 4 mesh 50 max #200 mesh 5-10 60-00197X001160191a 176.doc COPY 0C 1999 x1cin{eldcr, lnc. KLF;NFf Ea7ER 2405 14011-kAvmm- wr AIM RAIR sir+ WA Q nw; u7r.1 .l.7-37nn ta7C3 cAi .inini — ftc 4 of 10 All fill material shall be subject to approval of the geotechnical ongineer. Structural fill should be placed in maximum 8-inch loose lifts and compacted to a nrinimurn of 95 percent of the rnaximurn dry density rls determined by ASTM-D [55?. The moisture content should be near optimum at the tune of compaction. UST and product lime brlckfill shall conform to manufacturers specifications. Foundations The controller enclosure and canopy foundations may be supportcd directly on scarified and compacted granular fill or native soils or structural fall. Tile footings should be established a minimum of 24 inches below the lowest adjacent final grade for frost protection and confinement. Footings may be proportioned for a maximum net allowable bearing pressure of 3 G pounds per square foot (psf). A orle third increase may be used for transient wind or seismic - loads, Uplift Toads on the :.ar.opy may be resisted by the welgtlt of the footing and ovedyin- soil csr by skin friction developed along deep foundaIions sac as drilled piers. If the client wishes to consider pier foundalions, Kleinfelder can provide specific recorrlmerldalions regarding the } design and construction of these fbundations,, upon request. Total settlement of footings ft uuded on cumpetrmL soils should be or; the order of one inch or- lcss with differential scttlMents Of Yz inch of- less. In order to limit potential settlement, the footing excavations should be observed to verily that corrlre1cnt soils are, exposed and that the, excavations are free of loose or disturbed soils. The friction acting alolrg the base of footings founded on granular #ill soils or structural Ell may be computed using a coefficient of frictimi of 0.30 with the nonnal dead load. An allowable passive lateral earth pressure may be computed by using an equivalent lateral fluid pressure of 3I00 pounds per cubic foot (pcf) for the side of footings poured: against natural soils or properly placed and compacted bachfill. The values given above may be increased by ore -third for transient wind or seismic loads, Asphulf Concrete Pavement Secfion Desigzt and Constnrctiart Our pavemcnI design mconmienda[ions were developed using the American Association of State and Mghway Transportrttion Officials (AASFTF'O) inethod for flexible pavement design. Our pavement design pertains to areas outside of the Canopy area, but within the gasoline dispensing i facility boundaries. Our recommended design pavement section assumes that the s{ilrmde sail is 60-DDISIXOO UGUM I76.doe Page 5 of I0 Capyilg131 19991C1cinfttdrr,1w- f�fij f ` X L Et N t E L t) E R 2405 1401h Avei)iit. NE, Suite? ill 01- Belle -vile. WA 99005 415) WO-42M f42S) 567.4?01 ttit firm and unyielding following proofrolling and/or has been compacted to at least 95 percent of the soil's maximum dry density, as determined by A TM D1557 (modified Proctor). Our pavement section calculations are based on the following: * Annual maintenance such as stating cracks in the pavement. Design pavement life of 20 years. * 1Vlaxiintrm anticipated traffic loading values of 500 automobiles, 5 light trucks, 3 tncdizirn weight trucks, and 3 heavy trucks per clay. • Adequate drainage of surface and irrigation water to catch basins. Heavy construction traffic on asphalt pavements may exceed the design loads and could polentialIy damage or sherten the life, of the pavements. Therefore, we recommend the coatnwtor take appropriate measures to protect the pavement during construction. The design pavement sections should consist of a layer of crushed rock base (CRB) material placed on firm existing fill (or stmcmral fill) and overlain by an Asphalt Concrete Pavement (ACT). The design pavement section should consist of one of the following: Minimum CRB Mnimurn ACP Parking and lightly Traveled Areas 6 Heavy Tfaffic Areas 6 4 Prior to placerni;;nt of pavement material, the subgrade should be evaluated by proofrolling. Yielding ar unsuitable subgrade soils should be overexcavated and repaired as recommended in the Site Grading section of this report. The aggregate and asphaltic materials that should be placed and compacted in the parking and traffic areas of the site to the lines and grades shown on the plans are as follows: • Crushcd Rack Base should consist of clean, free draining gravel or crushed rock meeting the requirements of Section 9-03.9(3) Crushers Surfacing, Base Course in the 1996 Edition of the State of Washington Standard Spec cations for ,Road, Bridge, and Municipal Consmiciian (referred here after as the Standard Specifications). • Asphalt Concrete Pavement should consist of one or more courses of plant-nvxed asphalt concrete composed of asphalt and aggregate, with or without mineral filler, mixed in proportions to provide a homogcr€eous, stable and wolkaEble ndxttare. It should meet ft requiroments of Section 9- 03.9 Aggregates for Asphalt Concrete, for Class B materials, in the Standard Specifications. 60-40I8MOUG019Rt76.doe Pie Godt0 Ccpyright 1999 i{feinfekler, I= / f K{ FIN FFi ilFv 7dfti4 IAfUk A,,.-,.- KIF C..irn h1III P-1I...... WA alMll.' m7e5 cr-•} Aron 1A-).1 [x•r •z-mi f— Paving Asphalt should consist of AR4€lOOOW grade asphalt rnecting the requirements of Section 9-02.1(4) Paving Asphalt in the Standard Specificatiuns. After satisfactory installation and compaction of utility trench backfills in areas to be paved, subgrade soils should be moisture conditioned and compacted to at least 95 percent of the maximum dry density so as to provide a firm, smooth, unyielding sadwe. After compaction, the subgra, de should be kept moist to prevent it frorn drying out and cracking before placement of th.e C:RB. After satisfactory completion of subgradc preparation, the CRD should be placed in a manner to prevent segregation and compacted to at leapt 95 percent of the maximum dry density -,vith vibratory compaction equipment to provide tight interlock betwt,,en aggregate particles. After placement and compaction of the CRB, the contractor should be responsible for ttie preparation of the exposed base layer surface, the placement and the compaction of an ACP course, or courses, to the lures and grades shown on the plans and described in the spceiitcation4. The ACP, its placement, and compaction should meet the requirements of Section 5-04, Asphalt Concrete Pavement of tire. Standard Specifications. Portland Cement Paremeni Section Design and Conslraction Support for the Portland cement concrete (FCC) pavement may be provided by properly prepared granular fill soils or structund fill. Prior to placing pavement or base course inatedals, all unsuitable soils should have been excavated and [lie exposed sails prcparcd as recommended to the Site Grading section of this report. Recommendations for pave mcnt- st-tuctural see tions are based upon assumed traffic loads, classification and strength characteristies of the subgrade soils and the site grading reconimcndiil ions contained in this report. Given this infomiat€an, we recommend the following minimum pavement sections: Location Tank Slab Purnp Island Slag 61-00187.XOo 116019R 176,aoe fogy ftht 1999 K1efin felder. Inc. Material Portland Cement Concrete Pavement Aggregate Base Course Portland C:einent C'onc€ere Pavement Aggregate Base Course `Thickness (in3 7.0 &0 6.0 6.0 pqr 7 Ot 10 kri %:imrri f1FD -Piny 1Af1ik 8.ua — Air C..— AMI !'—If-,...— IMA 6Af)f1= f4Ie%fir-I A71VI fo iC1 ef.7 AIni 1�— These pavement sections are apphcabie for pavements with aggregate interlock Joints and edge support. The concrete should possess a niirtitt urn modulus of rupture of 650 pounds per square inch (psi) and the mix should be designed in accordance with the American Concrete Institute (ACI) manual Reinforcement deli--n should be performed by the structural engineer. Longitudinal arid transverse joint spacing should not exceed 12 feet and 15 feet, rcipectively. Joint details should conform to Portland Cement Association (PCA) guidelines. Expansion joints in concrete slabs should be scaled with petroleum resistant sealant to prevent minor releases from impacting subsurface soil. Prior to aggregate base placement, She pavernent area subgradc should be prepared as recommended previously. Crushed Rock Base slruuld consist of clean, free draining gravel or crashed rock meeting the requirements of Section 9-019(3) Crushed Surfacing, Base Carirsc in the 1996 Edition of the State of Washington Standard Specifications for Road, 'Bridge, and Mttnicipal Cons tnicLion (refined here after as Ehe Standard Sped fications). i The base material should be placed in uniferm loose lifts, brought to near optimum moisture content and compacted to a mini nUM Of 95 Iserccrrt of the maximum dry density as determined by AS"fM-D1557. Care should be taken to achieve tirtiform compaction acmes the pave -,meat area. Compaction levels should not vary by more than 5 percent betwr= the highest and lowest acceptable readings. It is imporlant that consiruction observation and testing be performed to ved Cy that these recommendations are complied with. It is important that pavement grades be set to provide positive drainage to suitable drainage stnictures. A desirable slope for drainage in paved areas fs two percent. Soil Corrosion Soils on this site are not expected to canumn sfdts in sufficient concentration. to be considered corrosive to metal or concrete. However, as a precautionary measure, we reconunentl that all concrete in contact with the onsite soils contain Type 11 cement and be placed is accordance with ACT pracedures. 6.0 Limitations 1 The recommendations contained in this report are based on our field explorations and our understanding of the proposed construction. The subsurface data used in the preparation of this bQ-Of1N7JCOQIAOWR l76-6w C S of i0 77 C i$tn 1999 Kkkirr&iet, Im. C. 9L P N F F I D F R 74051I(Nhhvpnerp NF %trW,A101 Rrlrrvm- WA190F]4 14-IMcf?-47nO TA75156?-4?03 fax report was obtained from the four borings performed for this investigation. It is possible that variations in the soil and groundwater conditions could exist between the points explored, The nature and extent of variations may not be evident until cortstruction occurs. If any conditions are encountered at this site, which are. different from those described in this report, our firm should be immediately notified so that we may make any necessary revisions to recornmend ations contained in this .report. In addition, if the scope or location of the planned construction changes from that described in this report, our firm should also be notified. This report was prepared in accordance with the geaert-lly accepted standard of practice at the time the report was written, No warranty, express or implied, is made. It is the Client's responsibility to see that all pasties to the project including the designer, contractor, subcontractors, etc. are made aw.-ffc of this report in its entirety. The use of information containctf in this report for bidtlfrtg piir,00ses should be &-iir at the Contractor's opdoo and risk. TD Additional Services i The tecoimnendations made in this report are based on the. assumption that an adequate grognun ' of tests and Observations will be made during construction to verify compliance with these recornmcndaiions. These tests and observations should include, but not necessarily be limited to, the following.. • Observations and testing daring site preparation, earthwork and stmetural fill placement. • Observations of footing excavations. Consultation as may be required during construction. We also recommend that project plans and specifications be reviewed by us to verify compatibility with our conclusions and recommendations. Additional information conceming the scope and cost o€these services can be obtained from our office. WODI a7xDO] 160 19R 06_dw Cbpyr9gh4 ]499 KieiofeEdsf, IrJC. K! Ei tit F, t DER 2-105 14[it}3 ,lt-,Pna3P \F SLiAi.- A I I I I R..Il.+viir+ 101119VNV-1,,. -+Y1 ; i *7,3 :5.3.1 )0:3 ; , — Page9vfiQ . 8.0 Closure We appreciate the opportunity to be of service on this project. Should you have any questions regarding this report or wish to discuss additional services, please Flo not hesitate to contact the undersigned at (425) 6 -4200, or Joel Cason, Klein€elder-s Client Service Manager to COSTCO Wholesale at (208) 376-9700. Sincerely, XLEINFELDER, INC. Susan C. Hasson, P.E. Project Engineer James M. Schmidt, P.E. Manager Geotechnical Engineering cc; Joel Carson; Kleinfelder, Boise, Idaho Chris 1'rerko, Barghausen 60.00187MOM16919R 176.doe CapAht 1999 Kldafelder, Ine- M, ExrlNs amil zleo page 10 of 10 K t E I N f f 1. 0 E R 2405 1401h Aveove, NE, Suite Al 01, Bellevue, WA 98005 1425) 567-4200 W151 567.4201 Ia-c APPLICATION FOR AUTHORIZATION TO USE REPORT OF GEaFF;CIIlVIGAL INVESTIGATION COSTCO GASOLINE RETAIL FACILITY 35100 ENCIIANI't D PARKWAY SOUTH FEDE, RAIL WAY, WASHINGTON KLE , I LLE R PROJECT NUMBER 60-0018-7X.001 DATED December 9,1999 TO: Kleinfelder, Ltc. 2405 140'' Avenue, ice?, Suite A101 13cllevue, Washington 98005 FROM: a Applicar[t___ . _. hereby applies for permission to: (Stale hue the um(s) CxNttc[��lA[ct�] for the purposes) cif- [State here why you wish to do wharf is eonlcrrplatcd as set forfb abaveI Applicant understands and agrees that Kleinfelder, Inc. is the copyright owner of the above identified report and that unituthorized use or copying of the above identified report is strictly prohibited without (lie express written permission of Kleinfelder, Inc. and Klein f6ider'sclient. Applicant understamds that Kleinfelder, Inc. andlor Kleiafelder°s cIient, may withhold such permission at its sole discretion, or gent such lrcrtnission upon such terms and conditions as it decins acceptable. Dated: Applicant by i to 60.00147XOOIM19R 17G.doc CoMigb[ 1999 KfcinfeldCr, lay !'age I of L IiiI �� �! •� %�^f �,i+r� .c; :ate� �•j,! f-. 1✓i�{_ �':cli� S• •�.�•. f.YA nre•{ F 1��;� :.i.� .� �`J'•LL �S. • Jew ±•Y�t `��f xx"l"'•�'^•��. ..---. • _ L=Y. ii���� rl f'i.�r t~► Wyj: f S� �qr �f�=�_� — jILI �='!rf' •�`�_ • r• 11 r��'J9r.�.i'¢r•'•jjf�.a� •t. - �`. ._ r; ��,• 4 .�•�}�yr��'�'' � t• �' ; 441 Jr JL 46, k. Site iv e'T Alt. aj �� f �.* 'y ' riKrr u�k �" �mxa;1 ``-.. m . � �i--- _. •i F � _.�' :� • � -- i'T- � • ��` � �Y • .�' T, •�.� • ; fi �' �`i �}Y;�•z • . } J!_ J/� !'� •, ••, .1���'r [ ;•j• :� r�, r�.i E ' _ - F .� ' � r*.._ •1��• •'� ���' S� �. -�,� .�t� �. .� i A.e .' r r . L"���r. � ,•�',�• f �y�: i � �.:.�.�• �. -� � e �^ �. . �; �� � +• �Y 1' �� Ef 11 i r��� i •! '• •+ N�,�� a ` i�bi •1. •!i`��.�: ; ..� I L]�=• l��f'.d�'i. R fey ,, .?� �'�r-`:- si .r: � •�'� a•`— 1��••{, _` '{+r �i y,�_=r•`�� f 1 ...� - i { �i i•--�} :tit 1.•• i•. fix• •_•rJt. �d •9�' �S�.i --yy r ,€€ 1 '�- ���y�i� :.- ; . �' • •; yr ., °'•iry+L �� "`i � a Y smsa�y.^",•�.1.• :1 � •�`�. :•Y{ �. •� �,t• 1_ r='�i +I,'-� e °+r 'L'kks 1 �• t t i' 44s�L� • ' .f :� i � •`'-�� --� +' d � • � i _lt � l yh! . F;� ••_.w�� ` f. al ,S � • • TN �i4�. ;�f}� .dr'�T f' -F yY 1' _ - �• � . •, i�•.•�•• 4i = ti •,�•. i•'� % L � �'. t. 9 r•L �' /K.f 7 W.ff� i _1irl ; '.•%ir ��' ��, F•,' _ i!';`'�G L; �I�. .y ` • F. rt= . M` S t f =a.f..+. It .ti i�• _ { !! . , EyE'E r '_�, }r� ti,R �� i• _ 1, . ��� ,. +:i.i�i•'r 1 2' .a:y/ }+:Seat.. 1 o 2000 Sco le in f eet Rererencei USES 7.7 iopoGraphlr quadrangle, Poverty Bay, Wash,. 1981 r COSTCO Gssofln& R144 t raalft FlGl1R Wvrvhousa VICINITY MAP 351[3[) Enchanted Parkway Sauth F"erel Way, Wuithlnufan Awl 14LE�iFAE17 Froecl; 50-0�11#-7lf.QD4 1 t f30f8 1YJ-Fi it COSTCO BUILDING ew 0 goo 19-9-11QWnFelder borinp nunber and approximatip location Scale in feet References averaK sme Pldmd.oca#lort No6 m, by Barohousen CommAting Englneers, Inc., dated 30/15/99 1 L\DRAW1MGA6QD9IS7X( FIG2bWG COWCO Gga4flAe Retail Findiliyl Wanhousa No.$11 SITE PLAN 3510a Enahaniea Parkway Sash Federn) 'Way, Wonhlnpian KtERNFELDER i'rojae It 6G-001 A-7}i.�01 i t/3fl f ee nSTINGFRIMRAM a LABORATORY _ FTF111y3 S. 94 WELIVILEO d �' - "'U2+i5THiIG7iO3►i '"i �" � ��' 1 �' � � '-' S D a , 15 1S DATE DRTL!!.r: D: 11-23-99 LOGGED BY, WSL I 1 WED I;Y; 5c11 7 ] I I I ! I I I I r 1 r r I 1 ] ! 7 r r , r I 22 g.J t 1 I r I saw, ] ] I 1 I F 7 7 i ! I 7 r f c I i 7 1 7 r I + 1 r 7 f 1 ! 7 ! ! c r f f I I I 1 I I I 7 25 S-2 1 7 ! I 7 dD 38 I J s I r 1 I I 1 i I 1 #JI S_ r ! 7 20 17 + I ! ! I 1 f I I r + 1 7 I 1 1 f r 13 S4 I 1 1 r I I 1 r r I r ] r r r 1 i I t f 1 I 1 { F ! f 1 I I I 1 7 r 1 ] l I f 1 1 r e e r r 7 I 37 S-$ r I 1 I I I 7 13 s 7 { s 1 5&3- r + 7 1 1 s I F r r f 1 1 I 1 ! SURFACE ELEVATION (feet): TOTAL ]l)3MI (ftrt): 23-0 DIAMETER OF 001UNG (lit): 4 IM klqKLFINFqELDER CF.OTECllMCAL AND EINVIRONMENTAL ENGINEERS SOILS AND i11ATffRIAI S'JE3Y'Ii` r PRf)-1F.r'T iti1nhwwo. c o- hi m7 -on1 SOIR, DESCRIPTION 1I1kvi g rdativety jal. s:x y •• fne gtavei paving. L-6 a7r CF Light ICI, gl gray -brown, siuldy SILT with gravel, as (verystiff rT301St TIi.L d Gray silty, fine to medium SAND zvi gravel, (very dense, moist), TILL Si4i l- k: C - slight increase in pcmentage of gravel �r w� gradws to dense O zo C= e-• r` U I sght-g,�jr, hit ]O rrledium 11�111] wilh sill, p (very dense, nraist), TILL z -: Aght-gray. silty, fine #v rnedium SAND c ►villt pmvel, (vmy dense, moist), TILL. silty fne6F9VfL- wills sand, < 7 (way dense, rnol5t), Tii;L x Of DT {LUNG ItImuiiDD; HSA Auger DIULLFR: IInji Prillfup CASTNG SIZE: C OSTCG Gasoline Retail Raeility Federal Way, Washington BORING LOC. D_ 1 Q FIGURE A -3a PACT ! of2 !f TESTING PROGRAM LARQRNIORY FIELD W�}ErLLJP1Z�'F�'.[7,O7�[ � j 'q a a �y OIr �%�.SCRIPTION r2 a � � i[4TRV\.iIVl1 �7 �� FrSsZ p� 1 yj 9 SLwy ? O„d !ro i Y s 0 1 gM is tO COaMC g=V9 k 7 7 t i [ f 1 1 7 I i 1 f 1 I i 1 e 1 I 1 I L Boring co Bled at 23 Tcct oT1 I M3M, Gro wst r not observed dndng drillitsg. *SAMPLER Cal. OD) *'TYPE g IDFI I' Cal 3p114 Spnoo Sl"1'(x"OD) ShriGy Split Spoon Try"r Grab No [ �° on [w7 Lilttrsj � A Recovery "HAMMER WEIGHT 300Rd (30"D;vp) 300Ax [3'0' Dro 140Ibis 30' Drop) 4STCO Gasoline Retail Facility FIGURE k4Y.1LEMFF.1,DER Federal Way, 1�'asbiugton A -3b C-FOTECHNICAL AND FAWnTONMENTAT, ENCiNEE!{S BOWNG LOG SOILS AND DLATERiALS TESTING RR0JF..rTNT1X3RV1?• r;n_Edsinm-mr R-1 PAGE 2or2 TESTING PROGRAM li.S.C,S. LAFIORATORY FIEW ILI lVElal Il}Ilg7,p, {�, ! c� w o NS i tUCiGN44 �; —. ... V �' �X f SOIL DESCRIPTION IFTIO T pavhsg, Flat, — Q 1 J.- gravel paving Gi•fty silly fmc tra wdimm SAFiD wi(b ! I gravel, (dense, inoisi), FILL ! 1 I ! r r I 1 t 1 i I I r I 1 i 1 ! r r r I I 1 J ! ! 20 9-1 - - grades to very dense } ! ! I t 7 ! A r I grstics to d£rise vvfth Vay Brown motfling 1 ! ! r k } r 1 r ! t8 20 • � r 1 1 1 ' 1 7 ! I } i r 1 1 I 35 �'urada to very dense �i 3o j. Gray Silty fine; to srtcdiurs SAND with I , I 1 : ,SD! :• :.- gravel, (very d-Ea se, moist),FILL ! ! ! 1 1 •i 1 1 1 1 I 7 f c > > t r I 1 k I l k ! l 7 t t ! r k I c r r x8-4 W2LiiC5 10 light grS]I-biQ►Y411'till 1 l r 1 : 36 -• mcasional clean swirl leases <t" 1hick r 1 1 } ! • 1 e 1 } ! t r } 1 I 15- 1 1 1 i i ! 1 1 1 1 - groundwater seepage at 16 f ctt grades !o r F 1 [ ] wet I - 1 1 t I 1 becomes gray, Moist at 18 feet I I > > a iy r i t 1 1 fr Dr1U I3RMLED: 11-23-99 SURFACE ELEVATION (feet): DRILLING I FTIRO 3: $SA Anger LOGGED BY. WSL TOTAL DEM] (#ccQ, 23-0 DRILLER; Jolt DrIliing iY1;11 BY: SCH DJAMVI'F1r OF BORING (in).- 4114 CASING ST7.F,; C STCO Gasoline Retail Facility FIGURE k"ICLUNFELDERA Federal Way, a$l1IBgtQ12 -4a GldYI;ERS GiS TECBSOI 'BORING./ LOG SF ANDMA"E1RIALSTFST NG atm-%Twer ,r s.,.....,,+.. 1 ....,...- --. 10 1 PAf:F. S of w ^ ors WELUPIEW 7 TA Q z f i I 7 s 1 k s i e a 9.6 SOIL DESC PTION - gravel increases at 20 f"t, koiva, tive# Boring completed at 23 feei on I I t231 Groundwater seepage encminterut at 16 fc,LE. Groundwater Eabde en munlered at 20 feet duriTig drilling. 2 CeV z sn F, F� G * No TYPE plf[ gkmk�l. ) � �J liners) Split � Sp �g�an Cal. SPT � � TkrrEieY � Grab � l�sepve:y :►13ANINJ R V EFCII'T 30D lbs 300 Eby 34P Ms PV it raw (30' I)rra) PD Drop) COSTCD Gasoline Retail Facility FIGU; IFederal Way, Washington KLEMY EDER A -4b ; GWfECIINICA1, AND ENVFRONN11FNTAL ENGINEERS Pz SOILS AND MATERIALS mrb- v. ]BORING LOG 1F1MJF(."YNFM11115?.Rt -r"f11ft1,,.nnk R-1 PAGE Z or2 f F. 319STING PROGRAM J BORATORY FIELD e 1 r � �- 1VEL TIEZO ro a s W o SOIL# DESCRIPTION ONS13tlf{:II03't �' � ;�� 1 g rn t4 1 � � .3 o �•� ,� ?+ SURFACE, Flat gravrl surlop ¢ ; U ,� z O + p. AL 4" gavel paving Light pay -brown, silty Fine to fnedium SAND wilh gravel, (loose, moist), MILL , 1 7 1 i r SDI _ _ a r 1 r I r a 1 I I 7 7 r I I 2 1 r I r 1 + Light gay, silty fine to inedium SAND 1'Jltli gavel, (&Tisu, moist), lUL 1 , 1 15 1 1 L 1 I 1 i r I I 1 1 r I ! gmdc4 to medhim dense I Gray silly lino SAM) wM k;avwl, }:1crsc, — S•3 Sill moist), TILL #'! DATE DI LLLD: i [-23-99 LOGGEDRY;1` L ' EIV ED BY; SGIi SURFACE RLWATION (feel): TOTAL DEPT3i (feet): 9.0 DTAD19TER OY ROPING (in): 4 114 ` J k4KLEINFELDE,R GEOTECHNICAL AND ENY1RONMEi'7Te L ENGINEERS SUMS AND AIATEREALS TESTING x ed wV 5cn Q 4 A T L3 W 0 a� a� V r, o l3oring corapicted at 9 feet on 11123/99. Groundwater not elltol}lltered during p w Miliog . t DRILi N0. KETHOP: IfSA Auger DRILLER. [Loll Drilling CASINGSIM COST'CO Gasoline Retail Facility Federal Way, Washington BORING LOG FIGURE S n PACE f of fj l 'TFST3NG Pl�OG2� �.�,c.s. LABORATORY w ws;I.UPrEZO i i SOM DESCRIPTION NSTRUCrIOPF a P a Rio >1 � P.N LAP °,�. •--- S[JiiFACl3: Gravel paving. `00 U r V g Vcl paving S r r r = •: Gray si)ty fine to lnediurn SAND ► ith ! ` ' gMv-el, (dcnse, FROM), FILL i - 1 1 ] r 1 1 7 1 I 1 r S ] 1 1 €4 S-1 514i 24 I I r J r ! I ► s 1 1 i I 1 1 = 1 I 7 S- - grades to medium d Ise r f I i S r r 1 1 I �� f I 1 ] r - Fi_rs fcct at 2 locations on a boulder or oil vcry dellse g)scial till. GroucdFvater not mcountered during sirilting. DA-3'E DRILLED, 11-Z]-9l SURFACE ELFVri'#'lillN (£ttt): FTI LLING I13F.THOD: MA Anger L13C{r ED NY: %VSL TOTAL l3 -1'II (feel); C5 DMIXER: Halt Drliiing IUVE D BY., SCH DIAh1ETF.R OF MUNG (9n). 4 114 CASILYG SUR: 3 1 COSTCO Gasoline Retail Facility Federal Wily, Washington cEorE I SOILS AND MATERIALS Es TESTING BORING �1lvEFRs BORING; LOG FROJECT NUMBER: 60-0018-7x-ool -R-4 FIGURE 6 m PArmior1 wET.TJPIEGO >a ' isl 1 a R' 1=]i1C �NS 'RUC r1Q11T x 4R ' ` W � [ a m Sr"ja a i V ;a Z C 0 1 1 1 ! f I f I 1 l S ! } t I S t ! ] 7 ! I I ! [ ] 1 ! k 1 i t I 1 r MA" IVT; 1 S ! ! L ! 1 e I 1 1 1 1 1 ! T I I t 1 21D r 1 1 1 1 7 1 1 ! [ 1 1 S I I 5-3 I [ t l 1 ! e r I t 1 r k I 6 S4 - I I 1 s 1 12 7 r I 1 7 1 I c I c + I 1 I f 1 i I 1 7 S.5 1 I L 7 i 7 7 1 I I S I 1 I 1 7 I ! 1 ! ! ! 1 1 } ! r [ [ e + r 1 Y I ] a 1 t I ► I r I 1 16 I I 1 t 1 } t ! 1 21 1 DATE DIULLRO, 12-23-99 L06CED BY: 1YSL '� �YLrD BY: SGH 3 SURFACF ELEVATION free#}: TOTAL DEPTH (feel), 19,0 DIAMETER OF BOJU G (Sri): d 114 ZU KLEINFE LDER GEOTirCH§U[ AL AND ENVIRONMENTAL FNGINEMIS SOILS AND AI14'fERTALS TESTING FRn.i--f•-r Ivrmrweu, +cn nn:o-,ti no: U.3.r'.S o SOIL ]DESCRIPTION �r as SURFACE. Level grassy srsa in parking Iar. WU, V sod and topsoil SM Light gray silly SAND wiles gmYef cobt4es, :. boulders, (ctenst, moist), FILL <N NZ � t,7 � firay silty URAVEL with sand and cub4les, � °• (ftse, moist), FILT, i? l7:� �F SAT GMY fireu ail;y SAND Ivilh oc'-wiOns., 1 gavel, (mediurn dense, moist), FILL f 2= ;n ' 143E Otay GraSYtt, sandy SILT With routs andU organks, (soft, we[), RELjCJ' DFS01L. a 7 A 07. 51►f _ -- 1-igbt gray -broom, silty one SAND, a :. (medium den5c, wet), ALT.UVjUM � Ice i �0 a�x 1301iRg completed 81 19 red on I IJ23M. Groundwater encountered 91 12 feet [Illlin rlFiliu;g. JAW NG 14tF,7`HOD, 115AAugrr DRTIJ.IFR: Holl brllling d CASING SMF, OSTCO Gasoline Retail FHeiljty F1 Ul{ Federal Way, Waishinglon A -7 LABORATORY - F!€Gt7 VS. C.5. WELUPTRZO - w o SOIL DESCRIPTION SO �.vFQS•F'RiJCi`Y�1�1 � �E' � � 'c� � s � � '� � u �o inz 04 SURFACE: Hal grassy, NE pvriiaa of Parcel L 1 f : '- 1" sod aid topsoil : Light gray silty GRA VEL with sand and cobbics, (mtdiurn dens moist to ►Ve �} t), f i r c FILL i 1 I I I 0 r t I i 1 14 S• 1 = grades 14 Very deme, moisl ._ 4 Lfgtit gray salty, fine to medium SAND r wil#1 Vavel, (vcry degas, moist] FILL I s e r , S-2 4W412 1 1 r f — f 1 1 x I Light brOlvn silty fine 10Inedium S11N5 whit graves, Irace organic. (dense, 31iUI5t), I i I I I1• --' a ► I I I ALLUVIUM , r 1 i r r s r 1 f f I , i ► e r i 1 1 i I 7 I I r i + i 'S S•4 = grades to Iight Vay,brown, wet II I 7 S , 1# 14 I 1 1 p r I i 1 F 1 Dazing tcmlinated doe to lcfusM al 15.1 Feet on very dense glacial tiff or gravel on 11123199. Groundwaler mcounicrcd al apixoxialetcly 12 feet during drilling. DATE DIULLED: 11-21-99 LOGGED RV.1YSL r -twED BY: SGH SURFACE ELEYAtTTON (feed: TOTAL DEPT11(feet): 15.1 MA METER OF BORING (ins): 4114 k"KLRINFE,LDER GEO'1'EC19MCAL Amy ENVIR(}t'1T►tENTAL ENGIN FFAS SOILS ANT) AWYEMALS TIES'FING rx1oJECT rrUMBER— 60•00197x-091 MULLING METHOD: HSA Auger DRT1.LER: 1loll DrMin g CASING SIZE, COSTCO Gasoline Retail Fadfi�y FIGURE Federal Way, Washniglon A-8 B01UNG LOG R-6 PAGE I of I! OIL CLASSIFICATION CHART ` SYMBOLS TYPICAL MAJOR DIVISIONS GRAPH LETTER DESCRIPTIONS .41 �, �• WC-LL-GRADED GRAVEM WVEL _ CLEAN . lk b GW wo mwwpxs. LJTTLE o;t rio GRAVEL GRAVELS • •i A. FLIES D GI tAV LLY (L!3 TL8 OR NO FIRES} POMY-GRADED GRAVELS'` OP GRAVEL.- WQ M>a MRES, LITMe SOIL$ Q OR NO FINES COMM Gi�AYELS WITH a 13 GNI SkTYCiRAVELS,GPMEL.SAND- -TURES GRAINED MORETAmso% FINES a O � SILT Mtl SOILS OF COARSE FRAGTI N RETAINED ON NO. t' ECLAKE AW)U GCCLAY CLAYEY GRAVELS, GRAVEL - SAND - stem of FINES) MIXTURES -;• SW WELL43RADED SANDS, (3MVEMY EAN SAi?S ' '�' :•> SANDS. LITTLE OR NO € INES SAND MORE TITAN 50Y. MAT AND (U3TTLE OIL NO FINE% p PCORLYYFtADEI} SJ�F,IOS, LARGER SANDY GRAVELLY SAND, LrME OR NO 200 NEVE SIZE SIB@4.^} - - FINES MORE Tjfm 50% SANDS YATH SM SILTY SANDS, &AND - SILT MtTURI s OF COARSE FINES FRAiCTKM ING ON t�Ep. < PASSING PRECIADW AMO ► � CLAYEY &MOS. SANG - CLAY 1 1 OF FWE$) MIXTURES INORGANr, SILTS ANo VERY FINE M L 3AN65, ROCK FLOUFJ SILTY DR CLAYEY nNrF SANDS OR CLAYEY SILTS VWFH SOUGHT P>~AST]CI Y WOR0ANIC CLAYS OF LOW TO SILTS MEMNI PLASTICrrY, GRAVELLY FINE AND fIOLIfD liJlllT LE" THMW CLAYS. SANDY CLAYS. SILTY GRAINED CLAYS _ CLAYS. LEAN CLAYS SOILS — L ORGANIC SILTS AND MGANIC _ SILTY CLAYS Cf LOW F"LASTICrr f WORO,4M6C SILTS. MICAOMUS OR M H DIATOMACEOUSME SAND MORE -am 30% SOILS OF WATFRM JS Of SMALLE117 NO- 2W SIEVE SIZE SILTS UQUID LIMrT H JAC CANJO CLAYS OF HIGH AND GREATERTHM 50 PiA"CFFY CLAYS OH ORGANIC CLAYS OF MEDWM TO HIGH PLASTICITY, ORdAi+NG SILTS HIGHLY014GANIC SOILS tM1r ' �+�PT FFAT;Hi7mus, Symw SOILS wrm RGH ORGANTG 0014TENTS MOTS DM SYMBOLS ARE USED TO INDICATE BORDERLINE Soil CLASSIFICAMONS KLEINFELDER SOIL CLASSIFICATION LEGEND PrO�9& * 60-00167X-00i 1 FIGURE A+9 IMF T ■-oT, I FLOW CONTROL CALCULATIONS z-7 b 0 N ECCRTS Command -- ) CREATE.a new Timo Series ------------------------ Production of nunoif Time Series Project Location : Sea-Tac Computing Series: 6076npre.i;sf Regional Scale Factor. 1.00 Data Type: Reduced Creating Hourly Time Series File Loading Time Series File-C:NKC_SWOMh KC_DATAISTTG60R.rnf Till Crass 0.50 acres Loading Time Sorles H1o:C:1KC. SWDMWC_ )ATMSTE IGOR.rnf impervious 0.50 acres Total Area: 1.00 acres Peaks Discharge: 0.84:2 GFS at 6,00 on Jan 6 in Year 6 Storing Time Series File :6076PPre,tsf Time Series Computed KCRTS Command Enter the Analysis TOOLS Module Analysis Tools Command ---------------------- Compute PEAKS and Flow Frequencies .................................. Loading Stage/Discharge curve:6076npne.1sf : Flaw Frequoncy Analysis Time Series File:6076npre.tsf Project Location.Sea-Tac Frequencies & Pears saved to File. 6076npre.pkcs Analysis Tools Command RETURN to Previous Menu KCRTS Command CREATE a now Time Sorlos Production of Runoff Time Series Project Location: Sea-Tac Computing Series. 6076ndBV.t9f Regionai Scale Factor : 1.00 Data Type: Reduced Creating Hourly Time Series File 12Y Loading Tirno Sorjos Fiio:C:%Q--SW0M\K1-_DATAISTT 60R.rnf Till Gress 0.16 acres Loading Time Series File=C:1KC_SWDMIKC_DATAISTE160R.rnf : Impervilevs 0.85 acres -------------- Total Area : 1.00 acm Peak Discharge: 0.433 GFS at 6:00 on .Ian 9 in Year 8 Storing Time Series File.6076ndev,tsf Time Series Computed KCRTS Command Enter tho Analysis TOOLS Module Analysis Tools Command Compute PEAKS and Flow Frequencies Loading SMgelDlscharge curve:6076ndev.tst Flow Froqucncy Analys:s Time Series File.6076ndev.taf Projeol Lacat€on:Sea-Tac Frequencies & Peaks saved to rne:6476ndev.pks Analysis Tools Cormmnd RETURN to Previous Menu KCRTS Command Enter the Analysis TOOLS Module Analysis Tools Command RETURN to Previous Menu KCRTS Command Size a RetentlnVOetentlon FACILITY Edit Facility ------------- CANCELLED Retention/Detention Facility Design r Saving RetentlonfDotentlon Facility File.6076nconvey_rdf 6076VPre ,T 5 Ylow Nrequenry AnftlymiK Time Series Filc:5076npre.tsf Project Location:Sca-Tac --Ai�n�aa1 Peak Flow Rates--- -----Flaw Prequency Analysis------- FlowRat-&_- Rank Time of Peak - - Peaks - - Rank Return Prob j<iFsj (CFS ) Period 0.166 5 2/09/01. 2:00 0.342 1 100.00 0.990 0.130 8 1105/07, 16:00 0.201 2 25.00 0.960 0,201 2 2/27/03 7:00 0.194 3 10.00 0.900 0.134 7 9/26/04 2:00 0.175 4 5.00 0.800 0.163 6 10/28/04 16:00 01166 5 3.00 0,667 0.1,15 4 1/18106 16:00 01163 6 2.00 0.500 0.194 3 10/26/06 0:00 0.134 7 1.M 0.231 0.342 1 1/09/08 6:00 0.130 9 1.10 0.091 Coanputed Feake 0.295 50.00 0.980 Page 1 1 r 6� 507 6ndav . pks Flow Prequeuay Analysis q,ime Series File:6076nday. tst Project Location:Sea-,Paa ---Annual Peak VI(nf Rates--- b'low Rate Rank Time of Peak (CFS ) 0,219 6 2/09/01 2:00 8 1 /05102 16:00 0,2$4 3 12/08/02. 18:00 0.214 7 8/26104 2:00 0.256 4 10/28/04 16:00 0,234 5 1/18l06 16:00 0.312 2 10126106 0:00 0.433 1 1109/09 6:00 Computed Peaks -----Flo%i Froqueney Analysis------- - - Poak . - - Rank Return Prot JCFS) Per- .iOd 0,433 1 100,00 0,990 0.312 2 25.00 0.960 0,259 3 10.00 0.900 0,256 4 5.00 0.800 0.234 5 3.00 0.6611 0.219 6 2.00 0.500 0.214 1 1.30 0.231 0.189 s 1.10 0.091 0.343 50,00 0.980 Page 1 M RatcntionlDntention Facility ,type of i aciliLy; DeLenLion vauElt. Facility Length: 100.00 I:t Facility width: 10.00 it Vac}_.li.ty Area: 1000. sq, ft F.ttftc-tivp Storage Depth. 1.50 ft Stage 0 Elevation: 254.50 ft storage volume: 1500. cup. ft Riser Head: 1.50 P`t Riser. Diametcr: 12 _ 00 inche. Number of orifices: 1 Full Head 111pe orifice 0 Height Diameter. Di sc9 arge Diameter (it) (in) (CPS) (in) 1 0.00 7.. 2'1 0,1111 Tots Notch Wnir.: Rncctancjiilar Length: 1.00 ill weir HeighL: 1.37 L� OULELOW RaLillg Curve: Kane Stage Elevatiotl SLorage ]}ischarge Pa-reolation {tt) Ott} (r13. tt) (ac--ft) tcf:.) (cfs) 0.00 25'4.SO 0. 0.000 0.000 0.00 0.02 254.52 20. 0.000 0.021 0.00 O.05 254.55 50. 0.001 0.030 0.00 0.07 254.57 70. 0.002 0.037 0.00 0.09 254.59 90. 0.002 0.043 0,00 011.2 2,,54,62 120, 0.00:3 0,048 0.00 0,14 254.64 140. 0.003 0.053 0.00 0.17 254.67 170. 0.004 0.057 0.00 0.19 254.69 190. 0.004 0.061 0.00 01 :Z6 254 .76 260, 0.006 0,02 2 0.00 O.34 254.94 340. 0.008 0.091 0.00 0.41 254.91 410. 0.009 0.090 0,00 0,49 254.99 490. 0.011 0.098 0,00 0.56 255.06 560, 0. 013 0..7.0131 0. 00 0,61 255,14 640, 0,01�i 0.112 0.00 0"1. 25S.21 VIO, 0.016 0.118 0.00 0.119 2S13*0.29 1090. 0,018 0.124 0.00 0.86 255.36 860, 0.020 0.130 0.00 0.94 255.44 940, 0,022 0.3.35 0,00 1.01 255.5.1 1030, 0,023 0. 1.41 0.00 1.09 2 5.59 1090. 0,025 0.146 0.00 1.16 255.66 1160. O.027 0.151 0.00 1.24 255.71 3.240, 0.02,U 4.156 P3.00 1.31 2_`35.81 1310, 0,030 0,160 0.00 1.37 255.87 1370. 0.031 0.164 0.00 1.39 255.84 1390. 0.032 0,165 0.00 1,40 255.90 1400. 0,032 -0.67 0,00 1,47 255,92. 1.420, 0,03=1 0-169 0.00 1.44 2!15,94 1440, 0,033 0.171 0.00 1.45 255.95 1450. O.033 0.174 0.00 1-.47 255.97 1470. 0,034 0,176 0,00 1.4B 255.98 1480. 0.034 0.178 0.00 1.50 25b.00 1500. 0.034 0.180 0100 1.60 256.10 .1.600. 0.037 0.494 0.00 1.70 256.20 1700, 0.039 1.060 0,00 1.80 256.30 1800. 0.041. 1..800 0.00 1.90 256.40 1900. 0,044 2.1'590 0,00 2.00 256.50 2000. 0,046 2.880 0.00 2.10 256.60 2100. 0.048 3,140 0.00 2,20 2li6,70 2200. 0,051 3,380 0.00 2.30 2!36,80 2300, 0.053 3,600 0.00 2.40 256.90 2400. 0.055 3.8.10 0.00 2.50 257.00 2500. 0.0ti11 4,010 DA0 7,60 Z57.1.0 2600. 0.060 4.200 0.00 2.70 257.20 2700, 0,067 4.380 0100 2.80 257.30 2900. 0.064 4 , 55 0,00 2.90 257.40 2900. 0.067 4,720 0.00 3.00 257,50 3000. 0.069 4,880 0.00 3.1.0 257.60 3100. 0.071 5.040 0.00 ,1.20 257,70 3200. 0.073 5.190 0.00 3.30 257.80 3300. 0.076 5.340 0.00 3.40 257.90 3400, 11.078 .,490 0.00 3.50 258.00 3500. 0.080 5.620 DAD Hyd Inflow 013tfloW Peak Storage Tafget talc Stage Slav (Cu-Ft) (Ae-Ft) 1. 0,43 A'WN kWY.i 0.44 1.58 25G.08 1583. 0.036 2 0,23 'RWw x'WN X 0.19 1.50 256.00 1504. 0.035 3 0.31 0,18 0.1.8 1.50 256.00 1495. 0.034 4 0.25 0.111 1,09 255.99 1492. 0.034 5 0.22 **** ** 0.16 1,31 255.81. 1.309. 0.030 6 0.26 0.16 0.16 1,29 2S!i"M 1287, 0103U 7 0.19 0.12 0.71 255.21 1J10. 0.015 i3 0,21 WR7kNRk 0.22 0.68 255.18 678. 0.01E 607 5 n r. dc.)m t.. pks b'1ow Frt--g4lellfzy Ar1dlywim Time Series i+ile:5076nrd«ui: j.;qf Project Location:Sea-Tac •-•--AFITNU ll Peak Flog Rate----- ArialyKix Flow Rai-e% Rjuflc Ti:ae of Peak - - Peaks Rank Return Frob (Ces) (CFS) (ft} Pcriod 0.160 5 2l09/01 5:00 0,441 1.58 1 100.88 0.990 0.118 7 1f05/02 17:00 0,193 1.50 2 25.00 0.960 0.1119 4 2/27103 9:00 0,179 1.49 3 10.00 0.900 0.115 8 9/26/04 3:00 0,179 1.49 4 5.00 0.800 0.159 5 10/28/04 19:00 0.160 1.31 5 3.00 0.667 0.193 2 1l18106 17:00 0.159 1.29 G 2.00 0.500 0.1119 3 11/24/06 5 : 00 0,118 0.71. 7 1.30 0.231 0.441 1 1/09/09 7:OG 0-115 0.68 8 1.10 0.091 Cc.-)mput.ed Peaks 0.358 1,56 50.00 0,98D e) 7 � P 5 0 �Al-il Command ------------- CREATE a now Time SeTle6 _ i Production of Runoff Time Series J Project Location: Sea-Tac Computing Series., +3W76spre.tsf .. et,ate i bA� � Regional Scale Factor: 1.00 Data Type: Roduced Creating Hourly Time Series File Leading Time Series Flte:C:1KC_SWDMkKC_DATAISTTGBOFC,rnf ; Till Grass 0.62 acres Loading Time Series Fi1e:C:%C WDMXKC_DATAlSTE160R.mf Impervious 0_52 acres -------------- Total Aroa : 1.05 acres Peak Discharge: 0.350 CFS at 6:00 m Jan 9 in Year 8 Storing Time Series Flle.6076spre.tsf Time Series Cornputod KCRTS Command Enter the Analysis TOOLS Module Analysis Tools Command Compute PEAKS and Flaw Frequencies Loading Stagell3fthargo curve-.6076spre.tsf ; Flow FregtjenW Analysls Time Series FlIe:6076spre.tsf Project Locatiori:Sea-Tac Frequencies & Peaks saved to File:6076spre.pks Analysis Tools Command RETURN to Previous Menu KCIRTS Command CREATE a new Time Series Production of Runoff Time dries Project Laoation . Sea-Tac Computing Sachs: 6076srdin.tsf fiegionat State Factor : 1.00 Data Type, Reduced Creating Hourly Time Series File Loading Time Series File,G:iKC_SWDM�KC_DATAISTTG60R.rnf Till Grass 0.25 aaras Loading Time Series File:C.IKC_SWDMlKC_DATA'STE160R.rnf : Impervious 0.75 acres -------------- Total Area. 1.00 acres Peak Discharge: 0.497 CFS at 6.00 on Jan 9 in Year 8 Storing Time Sigries Filo:6076srdin.1sf Time Series Computed KORTS Command Enter the Analysis TOOLS Module Analysis Fools Command Compute PEAKS and Flow Frequencies ---- Loading Stage0soharcge corve-60746srdin,tsf Flow Frequen J` Analysis Time Series Filo:6076srdin.tst Project Location: Sea-Tac Frequencles & Peaks saved to File:6076sr+din.pks Analysis Tools Command RETURN to Previous Menu ----------------------- KCRTS Command CREATE a new Time Series ------------------------ Production of Runoff Time Series Project Location : Sea-Tac Compulhg Series: 6076sbypass.Esf neglonal Scale Factor: 1.00 Data Type, Deduced Creating Hourly Time Series File Loading Time Series File: C:1t{G_SWDM1iCG_DATA%STE160R.rnf Impervious 0.05 acres -------------- Total Area, 0.05 acres Peak € ischarrge: 0.024 US at 6:00 on Jars 9 In Year 8 Storing Time Series Filo:6076sbypass.tsf Time Series Computed KCATS Command Enter the Analysis TOOLS Modulo 6076spre.pks Flow Frequency Analysis Time Series Fil,e:6076spre.tsf Project Lccation:Sea-Tac ---Annual Peak Flow Rakes--- -----Flow'Frequency Analysis ------- Flow Rate Rank Time of Peak - - Pears - - Rank Return Prot, f CF a p (C-ps) Period 0.1.74 5 2 /09 /01. 2 : 00 0.359 1 100.00 0.990 0.136 8 1/05/02 16;00 0.211 2 25.00 0.960 0.211 2 2/27/03 7:00 0.204 3 10.00 0.900 0.140 7 8/26/04 2:00 0.184 4 5.00 0.800 0.1111 6 10/28/04 16:00 0.174 5 3.00 0.667 0.184 4 1/18/06 16:00 0.171. 6 2.00 0.500 0.204 3 10/26/06 0:00 0.140 7 1.30 0.231 0.359 1 1/09/08 6:00 0.136 8 1.10 0.091 Computed Peaks 0.310 50.00 0.980 Page 1 6076srdin.pks Flow Frequency Analysis Time Series Fi le : 607 6s.r. din . t4f Project IFacati.o-n : Sea-Tac ---Annual Peak lelow hates --- Flow Rate Rank Time of Peak (CFS) 0.204 5 2104/Q1 2:00 0 . J.72 8 1105102 16 : 00 0.244 3 2/27103 7:00 0.191 7 8/26/04 2:00 0.229 4 10/28/04 1-6:04 0.218 5 1/18/06 16:00 0.279 2 10/26/06 0:00 Q.407 1 1/09/08 6:00 Computed Peaks -----Flaw Frequency Analysis------- - - Peaks - - Rank Return Prot (CFS) Period 0.407 1 100.00 0.990 0.279 2 25.00 0.960 0.244 3 10.00 0.900 0.229 4 5.00 0.800 0.218 5 3.00 0.667 0.204 6 2.00 D.500 0.191_ 7 1.30 0.231 0 . ;1.72 8 1.10 0.091 0.364 50.00 0.980 Page 1 6076f;ay a .pkG Flow Frequency Analysis Time 2efieS Filc:60768b22ass.tB£ 'Project ocation:Sea-fac Peak Flow Rates--- -----flow frequency AnaTyS18------- Flow Rate Rank Time of Peak - - peaks - - Rank Return Pro5 (CYS) (CFS) period 0.012 7 2/09/01 2:00 0.023 l 100.00 0.990 0.011 2 1/05/02 16:00 0.018 2 25.00 0.960 0.015 5 1210BY02 18:00 0.015 3 10.00 0.900 0.012 6 8126/O4 2:00 0.015 a S.OD 0.800 0.015 4 10/28/04 16:00 0.013 5 3.00 0.667 0.013 B 1/18/06 iR:00 0.012 6 2.00 0.500 0.018 2 10/26/06 0:00 0.01.2 9 1.30 0.231 0.023 l I/09/08 6;00 O'Dil S 1.10 01091 Computed Peaks 0,022 50.00 0,980 Page 1 / Rvtnntion/Detention uaciiity Type of Fa�i.l ity; Facility Length: Facility WidLIX: r'ac i l i ty Area: Effective Storage Depth: Stage 0 Elevation: Storage voles e: Risnr. Read: Riser Diameter; Nuunber of orifices. - retention Vault 25.12 ft 25 A2 ft 631. sq. ft 1.50 tt 546. cu. ft 1.50 ft 12.00 i.nChes 1 n.111 Fgvaci Piptn Orifice if Height Diameter Discharge Diameter (£L;) (in) (C:FS) (in) 1 0.00 2.25 0.16D Top Notch Weir: Nona OuLfluw Rating Curve. None l:UOL ulevation rioragc Disch rgn P: rc :lation €f't) ift) (cu. fL) €ac-fL) €ufsi (cfs) 0.00 255.70 0. 0.000 O.0OO 0.00 0,02 255.72 1.3. 0.000 0.021 0.00 0.05 255.75 32. 0.001 0.030 0.00 0.07 255,77 44, 0.00t 0.0"i'f 0.00 0.09 255.79 57. 0.001 0.042 0.00 0.12 255,82 7fi. 0.002 0.047 0.00 D.14 255 .84 813. 0,002 0.057 0,00 0.16 255.86 101. 0.002 0.0!36 0.00 0.1.9 255.89 120. 0.003 D.060 0.00 0 .26 2 ` 5.96 164. 0 .004 0,071 0.00 0.34 256.04 21.5, 0,005 0.080 0.00 0.41 256.11 259. 0 A06 0.088 0.00 0.49 256.19 309. 0.007 0,096 0.00 0.56 256.26 353. 0.008 O.103 0.00 0.64 256.34 404. 0.009 0.110 0.00 0.71 2'16 , 4. 4118, 0.010 0.116 0.00 0.79 256.49 498. 0.011 0,122 0.00 0.96 256.56 543. O.D12 0,128 0.00 0.94 256.454 593. O.D14 0.133 0.00 1.01 256.71 6-i7, 0.U15 0.1.39 0.00 1.09 256.79 698, 0,016 0,144 0.00 1.16 256.86 732. 0.017 0.148 0.00 .1.9.4 256.94 792. 0.018 0.153 0.00 1.31 257.01. 826. 0.019 0.158 0.00 1.39 2YI .09 8,1,7. 0.020 0. 1.62 0,00 1.46 257.16 921, D.021 0. 1.67 O. DO 1.50 257.20 946. D.022 0.169 0.00 1.60 257.30 3.009. 0.023 0.482 0.00 1.10 257,40 10,12 . 0.025 1.050 0.00 1.8D 257.50 1136. 0,026 1,780 0.00 1.9D 257.60 119-9. 0.028 2.580 0.00 2.00 257,70 12,62. 0.029 2.870 0.00 2.10 257.80 1321i. 0,030 3..330 0,00 2.70 257.90 1"388, 0,032 3,370 0.00 2.30 258.00 1451. 0.033 3.590 0.00 2.40 258.10 1514. 0.035 3.600 0.00 2.50 258.20 1577. 0.036 4.000 0.00 2.60 258.30 1.640. 0,038 4,190 0.00 .70 258.40 1'103. 0.039 4A70 0.00 9.80 258150 1766. 0.041 4.540 0.00 2.90 2118.60 1830. 0.042 4.710 0.00 3.00 258.70 1893. 0.043 4.870 0.00 3.10 258.80 1956. 0.045 5.030 0.00 3.20 258.40 2.019, 0,046 5.180 0.00 3.30 259.00 2082. 0.048 5.320 0.00 3.40 259.10 2145. 0.049 5.470 0.00 3.50 259.20 2206. 0.051 5,610 0-00 Hyd Inflow outflow Peak S4:orage Stage Rlev fcu--Ft) (Ac-Ft) 1 0.41 0.38 1.57 257.27 989, 0.023 2 0.22 0.19 1-51 2.57'21. 952. 0.022 3 0.28 0.1.7 1-49 2.57, 19 943. 0.022 4 0.214 0..1'1 1,50 257 .20 946. 0.022 h {0.23 0.16 1.41 257,11 886. 0.090 V GV G.IG I.37 257.07 UA. 0,020 7 0.19 0.12 0.78 256.48 494. 0.011 8 0.17 0112 0.')6 256_46 478. 0.011 Hyd RJu Facility Tributary Reservoir POC Outflow Out f )OW Tnf.low Inflow Target C:alc 1 0.38 0.02 0.40 l 0119 0.01 **+***w:** 0.21 3 0.17 0,02 *:*** ** 0.18 0.18 4 0.17 0,01 0.18 5 0.16 0.07 xaWxxxwx xxxsrx 0.17 6 0,16 0.0.1 0.17 0.17 7 0.12 0.01 ******** k " * 0.13 8 0.12 0,03. 0.12 Route Time Series Lhrough Facility Ilkflor1 Time Series File: 6076srdin.tot Out.f low `Dime Seri es Fi l cx : 60't 6srdaut POC Time: Series Filc:6076sdsout Tnflow/Outf"Low Analysis Peak Inflow Discharge: 0.407 CFS at Peak Outflow Discharge: 0.3V2. CFS at Peak Rnsnrvoir Seaga; 1,57 Ft Peak Rcnervoi.r €33ev: 257.27 Ft. Peak Reservoir SLOrage: 989. CU •Ft 0,023 Ar-Ttt Add TiMe Series: 6076sbypass. usf 6:00 on Jan 9 in Ycar 8 '1; 00 on Jan 9 in Year 8 Peak Sumned Discharge: 0.404 CYS at 7:00 on Jan 9 in Year 8 Point. of Conpliance File:6076sdsout.tsf Flow Frequency Analysis Time Snr.ios Filr:607 6srdout.tsf Project bocation:Sea-TaC ---Annual Peak Flow Rater,---- Frequency Analysis ------- RJ ow Rate Rank Time of Peak Peaks -- -- Rank Return Prob (CM {C PS) (ft) Period 0.161 6 2/09/01 5:00 0.382 1,'i11 1 100,00 0.990 0.120 8 1/05/02 17:00 0.195 1.51 2 25,00 0.960 0.170 3 2/27/03 9.00 0.170 1.5D 3 10.00 0.900 0.121 7 8/26/04 3.00 0.169 1.49 4 5.00 0.800 0,163 5 10/28/04 1S:00 01 163 1.40 5 3.00 0.667 0,195 2 1/18/06 16: 00 0,161 1..3"1 6 7.. 0p 0.500 01169 4 1.0/26/06 3:00 0.121 0.78 7 1.30 0.231 0.382 1 1/09/08 V- 00 0.120 0.76 8 1.10 0,091 Computed Peaks 0.320 1155 50.00 01980 Flow Frequency Analysis Time Series File:6076s€lsout.tsi Project Location; Sea --Tac ---Annual Peak Flow Rates--- ----- ----Flow Frequency Analysis --.....--•-•- Flow RclLe !tank Time o1 Peak - - Peaks - - Rank Return Prob (k'S ) {Cps) Period 0.169 6 2105/01 5:00 0.404 1 100,00 0.990 0.124 8 1/05/02 1?: 00 01208 2 25.00 - 0.960 0.178 4 2l27/03 S:OO 0.180 3 1.0100 0,9M 0,126 1 U/26104 3:00 0.178 4 5.00 D.800 D.173 5 10/28/04 1;8;00 0.173 5 3.00 0.6457 0.208 2 1/18/06 16:00 0,169 6 2,DO O.500 0,180 3 11/24/06 4:00 0.126 7 1.30 0,231 0,404 1 3.109108 7:00 0.124 8 1.10 0.091 Computed Peaks 0.338 50.00 0.980 6076srdon4' ,pkn Flow Frequency Analyuis Time Series File:6076srdout.t.sf Project Location: Sea--Tac: ---Annual Peak Flow Rateq--- ---.".--ra low Frequency Analysis ---„-- Flew Rate Rank Time of Peak - Peaks - - dank Return Prot (CFS) (ft) Period 0.161 6 2/09/01 5:00 0.382 1.57 1 100.00 0.990 0.120 8 1/05/02 17:00 0.195 1.51 2 25.00 0.960 0.1.70 3 2/27/03 9:00 0.170 1.50 3 10.00 0.900 0,121 7 8/26/04 3:00 0.169 1.49 4 5.00 0.800 0.163 5 10/28/04 18:00 0.163 1.40 5 3.00 0.60 0.195 2 1/18/06 16:00 0.1.61. 1..37 6 2.00 0.500 0.169 4 10/26/06 3:00 0,121 0.78 7 1.30 0,231 0.382 1 1/09/08 7:00 0.120 0.76 8 1.10 0.091 Computed Peaks 0.320 1.55 50.OD 0.980 Page 1 6 07 6 sdsout . pka Flow Frequency Analysis 'Time Series Fi1e:6076sdsout.tsf Project Location : Sea -'fact ---Annual Peak Flow Rates--- F 1, ow Rate Rank T7.me of Peak (CFS) 0.1-69 6 2/09/03. 5:00 0 ,1.24 8 1/05/02 17 : 00 0.1.78 4 2/27/03 8:00 0.126 7 8/26/04 3:00 0.173 5 10/28/04 18 00 0,208 2 1/18/06 16:00 0.180 3 11/24/06 4:00 0.404 1 1/09/08 V:00 Computed Peaks Flow Frequency AnalysiS------- - - Peaks - - Runk Return Prob (CFS) Period 0.404 1 1Q0.00 0.990 0.208 2 25.00 0.960 0.1_80 3 10.00 0.900 0.178 4 5.00 0.800 0.173 5 1.00 0.667 0.16E 6 2 A0 0.500 0.126 7 1.30 0.231 0.124 8 1.10 0.091 0.338 50.00 0.980 Page 1 EXHIBIT G BASIC WATER QUALITY CALCULATION CI S TCO FUELING S!'A11ON 1 SOUTH BASIN FEDERAL WAY, WASIDNGTON DEMIM.L E WE'1 VAIJI:r RFSQUIREQ WORAGE V, = 'Volume of mean Annual Storm Runoff (Cl-) R = Rmfkli from mein Anntud Slorm (feet) Al = Brea of Imlrarvlous Ais = Area of Till grass lip = Welpool Volume (C.F) € = Volume Factor (=3) V, = [0,9 (A) # 0.25 (A,,,)] x R vb = fv, R = 0.039 A, = 32,670 SF A,g = l DJ890 SF Vr = J0.9 (32,070) + 0.25 (10,890)] X 0.039 = 1,253 Cl~ V4 = (3) (1,253) = 3,760 CF 607 .008 [JPJkb/a#h] COSTC F RUNG STATIONINOJUH BASIN FEDERAL WAY, WASHINUEUN DJ[10MB WHtV&UL£IWOMEDSTORAGE V _ Vim =niiAin� A!%oriR m0r( £= R infiall. fromman Annu m m(feet) _ Area of ImpoiTious Am= Area ofTill Gran V _ WetpoolVolume (CF) £ _ Voltum [actor V ;-- [9(A)+E1id1,R v _ fvr R = 0.039 A =:1 37,0263F ALI. = 6534SF V_ 1E9 0 7+ «25 5 k Et) 9 _ 1,363 C.F V _ (a) (1,363) = 4,M CP 6076.017 IAM / 7 XHIBIT H CONVEYANCE CALCULATIONS lil II U u tl CD 4 O O {j liNg aT CV i7 tl - ll s � ni N s*i is �o sn v p INv? aq ci 0 IF Sri non O OO ol 93 I�Y^ -max II C O 0 0 O 0 0 L o C4 z II o li O C3 C3 — 411 {V SV J rirj00 0 T� 7 j [v 0 C4 cv C i cq 0 :I C] Sv-cM ,• ,n��sn�o p C3 CJ U CJ O C7 Q L } ✓ ry. d v 8 47 v ' L o o qcry C r- S7 EY. ;n Qcy rD tv 5q V li ii {g ,L c ri rC'S aC-i n rj 100 4 Q ij rL II 00 C}U U C}U `{ E II 16 �d iS M7 16 O O� p• d � x 0 •-- ne-' li .I � 9 Go A r> p co � i 7 yl IF ' �f L2 II Co 44 u � �C4 -� j5 L fl 0II pp GDCL 7 lil } 71i LJ CL �L7 � ilf p❑ II �} 1 � m ,� a A 1! A }' ?� Y A fY 41 '' t } L1 r r 1r ff _ k jj GRADING AND DRAINAGE PLAN(SOUTH) MATCHLINE SEE SHEET C7 " ' I , 4 I k A. T. .. .� _ .F f � 7 r A 7c a+1u¢f a)'op1 "51.0 F E. IFLIS fY ' cwo n AW w.ttu �f LE01=ND PRDSDGM F0J&E0 CMDE CiiM �'. Ei'S;l•2;PUCE irVT am-im vxon4a F.ti9L•"6 imm SPCr lar r.asryet Pfiati•llp<a im w MR Mold fart YIWU'.WQ UMEt WRB C-0Iitazm wmm SmJ f•NL14W4 i] }IlIK4 445.4N lv5TY3 51 CPO CFY:'44:E PRxesm STORM tasty EUSy EK11M ETM CZN A&`I PSWIMM d'MT AYM ftia JIMM i3 FlVMJEW -0S -CM P:.V3NNT rlWMIT M CR57L a0ati'FW COYSTRwr*w �Qt1r - FaPi1:.OH .Civr 10 0a' kmk Ea11'APIA F\v93 CRUW x W If rYl Nome 1, M17Y ,tall! {11V_>' Flf VRI MI wsll q.nxxvu Nmil" Aa AFQuSru 7. ILL FW C." i-0!.',EGFA:.ta SMVL BE T.VRSho DOIDMIf M DUMPP& YFLLT, S ALi FEYr M%i Lk"S &-V l M fQL4Y.4 Vm CAR-d &\S4 MEiiI:C STOR?L14 STAUMPZ SCHEDULE 76F3 r'^'A�c J GOe.&) 4€ Ta rw Wth b&N &, WA i MY'017M rd141, S Otmt/It S1YAY5lm ,z r_Y+7yl) Ar.�558 CH• �rR. "E CEZti i/LA OC fi` TFTE VL1E i1 CL 7YIW BU ft1.5•4 d/ R_•M PARE 5 ' 51: Y. } 4PERASLE W CI lxli :PM aL PE iMl! t71.SM to L+• �� sa a xmr PPL { tw LF d s a :x are Q) WN a;&!t ye, TOE I Ni 44M &W.. r I!-15M. LE.-,' ESE ®R fl LF 12' :-0 P }Sat o CATCK VIEW # 1, TYF¢III W GM i.'_50, kM-QMA LE 5,Si;b ram' I0ATER om m/Ik7ETIFiC•51 um. EEa mm i im god ► Mi. I' CATrH MM 1 i, 1roE I Y/ CM CMV Px. r.<,a_ L. _353L9 I as I Irmo 1fi7L 75 LF 1Y Sa Q tra. '. 7' 11 17' ml 4}W.15< RMA'} a OS; A t 1.1TAk 1 JCl �. a" 30 0 ik bat FIR RW L' M Coati CYIES TO FCFW C:�� SVOTµ. 9J LF 4'*IvDrf SOME 1! ?x mmism !LWD 4' PR FC, fffi V Nu,l.w tUSclult U "I 54ul99f LVAi . Of 50 CLF*kWE RlF-ZM,EL i i57.a i NW id t1 fAwil• ILM.-i-Ata. it md.4 hz, So CLEJ.-am. RY450.7 E 13T1 n 1Mr 1yj . 9F•104�•G4{� CW OF 3-LEAPx. WAY f+'PF:G.FlI Ffi. I 711 I n 'r o Y n m � i34L ^ in ifi z�•'vr wN 3 QJ I RADI- G/DRAINAGE _PLAIN a r" �cn cu • sas �S r. .fr.. • 1 i MAT INE SEE 9HEE3 C8 -0c u IT'sa a trob!!r cx4x} s . .1f�jij� tx6T. CR10E ZtF-r. CPJLi _ i } ! 3. • LSC RAL RMAKE FA 'I RM _ L , hSP.►LTy� ioff. fpjw TNZ ! nti iz�'�' • xa i.�aoti`� !a LF soda LUEND S�NLU, w >�;l a7hilq &�KL9 01r16 ................ � siQsirnsMfaieaFtir9we r.� STnN rhYN ■ �5 ZWM VM aims ease ¢ .. SWCOM zas . 1K fX1FToff o NOMS !• �! � E � �auvr�rf �,mW ume F xXx AMA ILI, AM 1 cp**14) j"*p'r °t t i " " €` FrFw S .€ u ti MR; 05'pCf7Y-LiiS4 t •i � � 1 G7� U" cf FEEMRM WAY 7.0 OTHER PERMITS Fuel facility related peripheral permits City of Federal Way Building Permit Lake Haven Sewer Service, Connection Permit 6076.024. docx 8.0 CONSTRUCTION STORMWATER POLLUTION PREVENTION PLAN (CWWPP) ANALYSIS AND DESIGN 8.1 Erosion and Sediment Control (ESC) Plan Analysis and Design A copy of the demolition and erosion control plan showing Erosion and Sediment Control measures will be provided in the Final TIR. 8.2 Stormwater Pollution Prevention and Spill (SWPPS) Plan Design Per the City of Federal Way, a SWPPP will not be provided, as the proposed improvements disturb less than 1 acre. 6076.024.docx 9.0 BOND QUANTITIES, FACILITY SUMMARIES, AND DECLARATION OF COVENANT The completed Bond Quantity Worksheet will be included in the Final TIR, if necessary. 6076.024.docx 10.0 OPERATIONS AND MAINTENANCE MANUAL An Operations and Maintenance Manual will be included in the Final TIR, if necessary. 6076.024. docx