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16-100906Z.5-Rniuvn.+ry February 22, 2016 Jim Ferrell, Mayor Carlo Evangelisti, Senior Geotechnical Engineer Emailed: CEvan elisti landauinc.com Landau Associates Inc. 130 2❑d Avenue South Edmonds, WA 98020 RE: File #16-100906-AD; GEOLOGICAL EXPLORATORY/RECONNAISSANCE WORK Martin (Sommerville), 29604 23rd Avenue S., Federal Way (Parcel No. 012103-9108) Dear Mr. Evangelisti: This letter is written in response to your letter of February 19, 2016, requesting approval to do exploratory work on the above -mentioned 1.05-acre parcel for the purpose of preparing a geotechnical engineering report in order to construct a new home replacing a structure damaged by fire. A letter and accompanying materials request the Director's written approval to drill one geotechnical boring approximately 50 feet in depth in the middle of the existing house footprint. The proposed bore hole, B-1, will be located within geologically hazardous areas and include the erosion and landslide hazard areas. Pursuant to Federal Way Revised Code (FWRC) 19.145.120(2), the subsurface exploratory work is conditionally approved. You are hereby authorized to complete the exploration work identified in your application, subject to the following conditions per the Planning and Development Services Divisions: 1. At a minimum, the following erosion control measures shall be implemented before, during, and after construction: minimal soil disturbance and brush clearing (not grading) to access the test site(s); wattles and/or silt fence installed around the test site(s) prior to excavation; backfill of test locations per Washington State Department of Ecology (DOE) specifications; and a minimum of three inches of straw spread over the disturbed areas. 2. Disturbance of the geologically hazardous area shall be minimized and the test pit restored immediately to the previous condition after completion of the boring. This letter does not approve any other land surface modification within the geologically hazardous area for additional exploratory work or septic design. Also, note the improvements shown on the submitted test pit plans are not approved under this decision. Please do not hesitate to contact Leila W.-Oakes at 253-835-2644 or leila.willou hb -oakes r..cit offederalwa .corn if you have any questions. Sincerely, Jf� Michael A. Morales Director of Community Development enc: Approved Boring Plan c: Julie Brannberg, Prime NW Construction, 1 1 13 Sleater Kinney Rd. SE, Lacey, WA 98503 (Agent/Builder) Kevin Peterson, Engineering Plans Reviewer 33325 8th Avenue South, Federal Way, WA 98003-6325 (253) 835-7000 a www.qtof.,gd� way.com Pis 5L*11 ""(-Vt�f I le- b 2016 FEDrRALWAY March 27,2016 Amy Jo Pearsall City Attorney 33325 8th Ave S. Federal Way, WA 98003 Dear Ms Pearsall It is my understanding that a building permit is being sought for the property located at 29604 23rd Ave SW, Federal Way. I have three concerns with such a project. First, The 10 feet wide cement path, on an existing easement, leading to the above address was constructed as a driveway, not a commercial street. When a Federal Way firetruck drove down the path to extinguish a home fire in February 2014, it did significant damage to the roadway in a single trip. One can only imagine the damage resulting from commercial vehicles heavily laden with building materials. Second, any potential house would have to connect to the recently installed sewer line on 23rd Ave SW. Trenching into a steep (60%+ grade), inherently unstable, moisture laden hillside is obviously fraught with risks (Oso comes to mind). Third, the court, in Jones vs. Heisell clearly stated that the easement at the northern end of 23rd Ave shall never for any reason be intentionally blocked. It is quite obvious that the installation of 350+ feet of sewer line in the easement would cause prolonged blockage, and thus deny me access to my property (tax parcel 012103-9090-03). It is my hope that serious considerations will be given to the above. /in a U;/� John osholm M D, FACS 2rd3Ave SW Federal Way, WA 980231 March 27,2016 Michael Morales Director Community Development 33325 8th Ave S. Federal Way, WA 98003 Dear Mr Morales 1JEVEL�pi14E�� . It is my understanding that a building permit is being sought for the property located at 29604 23rd Ave SW, Federal Way. I have three concerns with such a project. First, The 10 feet wide cement path, on an existing easement, leading to the above address was constructed as a driveway, not a commercial street. When a Federal Way firetruck drove down the path to extinguish a home fire in February 2014, it did significant damage to the roadway in a single trip. One can only imagine the damage resulting from commercial vehicles heavily laden with building materials. Second, any potential house would have to connect to the recently installed sewer line on 23rd Ave SW. Trenching into a steep (60%+ grade), inherently unstable, moisture laden hillside is obviously fraught with risks (Oso comes to mind). Third, the court, in Jones vs. Heisell clearly stated that the easement at the northern end of 23rd Ave shall never for any reason be intentionally blocked. It is quite obvious that the installation of 350+ feet of sewer line in the easement would cause prolonged blockage, and thus deny me access to my property (tax parcel 012103-9090-03). it is my hope that serious considerations will be given to the above. Sin r ours Jahn Rosholm MD, FACS 29641 23rd Ave SW Federal Way, WA 98023 Leila Willoughby -Oakes From: Julie Brannberg <julie.brannberg@gmail.com> Sent: Friday, November 06, 2015 8:40 AM To: Leila Willoughby -Oakes Subject: Re: Sommerville Residence -Peer Review Estimate Hi Leila, Thank you for your reply. I will process this letter and request for deposit. Please note on the Project Applicant that our mailing address is: 1113 Sleater Kinney RD. There was a '1' missing on the letter - not sure if that affects actual address labeling or not. Thank you, Julie Prime NW Construction (360) 790-6317 On Wed, Nov 4, 2015 at 4:39 PM, Leila Willoughby -Oakes <Leila.Willou hb -Oakes ci offederalwa .comma wrote: Attached is a letter from the City of Federal Way regarding the above -mentioned project. The original with all of the enclosures will be mailed to you today. Please be advised some parties on the letter are cced for information purposes only. Thank you. art t Federal Way 33325 8t' Avenue South Federal Way, WA 98003-6325 www.cityoffederalway.com Julie Brannberg (360) 790-6317 1 julie.brannberggmait.com Leila Willoughby -Oakes From: Leila Willoughby -Oakes Sent: Thursday, October 15, 2015 8:21 AM. To: Edward Walsh Cc: Kevin Peterson; Isaac Conlen Subject: RE: Sommerville Rebuild 15-105178-SH Hi EJ, Thank you for your time on the pre -review of the Sommerville Rebuild. I concur with your technical comments and will arrange a peer review. I suspected the original beach cottage was smaller than the proposed single family as the valuation is $1, 000, 000 and is +6,000 square feet. I will incorporate your comments in the review letter before the starting the peer review. Leila From: Edward Walsh Sent: Wednesday, October 14, 2015 4:29 PM To: Leila Willoughby -Oakes Cc: Kevin Peterson Subject: Sommerville Rebuild 15-105178 Leila - I'll bring over the marked up copy of the report I grabbed out of the SF review stack. I flagged a number of pages with discrepancies that should be resolved by the applicant. From what I see, both in the inconsistencies between the plans and Geo report, and also in the writing of the report, I am fairly sure that Geo Resources did not review the house plans, foundations, etc.. I would recommend that something be required from them that they are ok with the plans. The plans do not incorporate a number of concerns they outlined, related to both the foundations, erosion and drainage. Regarding the drainage, we need to determine if it is permissible to discharge via a tightline pipe to the Puget Sound as they are proposing per our standards. Given that is outstanding, the storm design may have to change anyway. Geo Resources recommended that they connect to the tightline in the street, not what is proposed on the plans. I don't see enough elevations on the plan to know if that option is feasible. In the event that they are permitted to go to the Sound, this would involve construction of a drainage outfall pipe, anchors and outfall structure within the GHA and shoreline management area. I am fairly sure that this would be a new disturbance to that area. I don't know what on your end, if anything, needs to happen to permit that, if you are in agreement that it is even permissible. From what I see between the report and the images on the King County GIS info, the existing structure that burned down was a 1 story structure on a combination of stilts and a foundation. Basically it appears it was originally constructed as a small summer home along the water. From the pictures, it appears that it was a fairly light structure and probably contained minimal HVAC, piping, etc. that all add weight to the structure. What they are proposing is essentially a 3 story house within the same +/- footprint using modern construction techniques with all the equipment required to meet building codes. AKA, a substantial increase in structural loading above the top of slope. Geo Resources simplified logic is that the former house was there for a long time and that they are staying in the same footprint therefore it should be ok. They did do several test pits to 6-7 feet to classify soils and said that further supported their logic. They also said the completed a simplified slide analysis and it is acceptable. The report includes no laboratory data, no slide analysis input or output to support their conclusion and the test pits are shallow relative to the depth of the proposed basement and adjacent slope to the OHWM. Given the increase in load alone adjacent to the top of slope I would 'recommend this be sent to one of the third party Geo companies for their review. While Geo Resources may be completely correct, all their assumptions and recommendations, based on the limited information they submitted and the large'increase in loading that doesn't really appear anywhere in their report, I think this one should probably'get sent out. Any questions, let me know EJ Walsh, PE Development Services Manager Public Works Department 33325 8th Ave South Federal Wi y` WA 98003 Office: (253) 835-2730 www.Cit ofFederalWa .com ti November 4, 2015 Pamela Martin (Sommerville) 519 Gays Drive Marysville WA 98271 RECEIVED. 15y' COMMUMIV ,CONWIC �EVEy ppMENT DEPARTMENT Jim Ferrell, Mayor Emailed: pamelasornmervilleOvmail.com RE: File #15-105319-00-AD; GEOTECHNICAL REPORT PEER REVIEW ESTIMATE SOMMERVILE REBUILD (Proposed Residence),128 S 293rd St. (012103 9108), Federal Way Dear Ms. Martin (Sommerville): Please find the enclosed consultant task authorization and scope of work for review of the `Sommerville Rebuild' geotechnical engineering report, prepared by GeoResources on September 20, 2014, there are forthcoming study revisions as requested by the City to be completed by applicant. The city requires a third party review of the report in order to proceed with building permit review. The department's on -call consultant, Landau Associates, Inc. was requested to provide an estimate to review plans and the submitted report. Landau's fee determination summary is enclosed. When authorized by the applicant, the City will set up an account funded by the applicant and drawn down by the work performed by Landau Associates, Inc. If any funds are not used, they will be returned to the applicant. A check in the amount of $1, 500.00 made payable to the City of Federal Way and a signature on the consultant's authorization form (original) must be submitted before the peer review will begin. In November 2015 the Public Works Department (Drainage and Development Engineering Review) and Planning Division will provide technical review comments on the site plan and geotechnical report submitted, other division comments are forthcoming (i.e. Building). All submitted items shall be revised to reflect the technical comments of the city. If the third party reviewer requires revisions to the proposal's design, the City comments may be subject to change. Please note the owner's applicant or agent shall coordinate all consultants involved throughout project and/or study resubmittals. If you have any questions regarding this letter or your rhird-parry review request, please contact the project planner at 253-835-2644 or leila.,%Uoughby-oakes@cityoffederalway.com. SincereI , d9 r � Leila Willoughby -Oakes Associate Planner T!LkA c: Prime NW Construction, 1113 Sleater Kinney Rd. SE, Lacey WA 98503 1 . ran brr. a ail.enm Kevin S. Schembs, GeoResources, LLC, 5007 Pacific Hwy E., S • , fife, WA 98424' eoteehiue er) Bruce Brown, Designer, 1011 Mellen Street, Centralia, WA, 9 31 (Civil Engineering Consultant) r� enc: Geotechnical Consultant Peer Review Authorization Form (fo �i �naturc} City of Federal ce 15-105319-AD'c D 33325 8th Avenue South, Federal Way, WA 98003-6325 (253) 835-7000 • www.cityeedeffilway.com Leila Willoughby -Oakes From: Arber, Laura M (DFW) <Laura.Arber@dfw.wa.gov> Sent: Thursday, October 29, 2015 9:00 AM To: Leila Willoughby -Oakes Subject: RE: HPA- New SFR Hello Leila, If they plan to place any structure along or waterward of the bulkhead they will need an HPA. Additionally, Im not sure the gabion baskets will be permitable without further review. If they place a structure (such as gabion baskets) on the shoreline they typically need to mitigate by removing a similar footprint of something like debris (old tires, broken concrete sections, bricks, non-native angular rocks, etc.). Thanks for checking and let me know if you have additional questions. Regards, LaurcElArbe,r Washington Dept. of Fish and Wildlife I Marine Habitat Biologist 116o18 Mill Creek Blvd, Mill Creek, WA 98012 I P. (425)379-23o6 I Laura.Arber@dfw.wa.gI Hours M-F. 8:30 - 3:00 From: Leila Willoughby -Oakes Fmailto:Leila. Willou hb -Oakes ci ❑ffederalwa .cam] Sent: Wednesday, October 28, 2015 3:14 PM To: Arber, Laura M (DFW) Cc: Kevin Peterson Subject: HPA- New SFR Greetings Laura, The attached site plan represents a new single family residence replacing a smaller residence partially destroyed by fire. The new residence is significantly larger than the previous seaside home. Due to the storm conveyance system and gabion basket will an HPA be required? The city is still determining if SEPA will be required. Thanks for your technical assistance. We'll add this to the file. Best, Leila L. Willoughby -Oakes Associate Planner Please resubmit all applications via the Permit center. 33325 8ch Avenue South Federal Way, WA 98003-6325 Phone:253/835-2644 Fax: 253/835-2609 www.cityafede ra f w ay. co m CSC)go( 9 Ave d Z j legend r B-1 Approximate Boring Location TP-1 Approximate Test Pit Locatiol N by GeoResources (2014) - b EKERGY R15S3PATV+Q) APPRM_ L=1100 l OF EXISTING DUU('-.AD CLOOOPLAIN •5 i ~ - ~ - . _ HOPE SUR 37.3 SIN .'•+•*'-•7-IZ..M: =,-�z_ yi g OONMANLE'toor 70 VE — - - ` - A8DGROUND M 51OPE AREAS THAT EXCEED 40Y. •- /_--_'_-� J -j• �� _ - - - - -- - TP-1 M5nNG DECK, 3s ~ jI TO KVIKT]4 _ 1 3' ,s z CkS :N PLAfFf 1 SO' SNORES 1NE • � - -- - -- ' � � !r - — - - •' - - - - •—r-�•-- � - • � C4ACfiETC hNCHbR 8t1TID;NG SEDMACK �v p7 DtiP'£ TP-2 CUL.1YYC 1 tv DOWIISPNf°J '� -_� T� ••�-8P roOTIHGDPDRAW; ' 1 i• ~ .i'sbp OJb 'ffi 1 FOQTMN7 OF ,�. . 6.1 ` � 1 r { _ _ ; . •-1••„pp. EXIST= rOUNCATILW I 1725 5F DRIVEWAY AREA Tb f I� r IEL� jDa• � � . ^ ors CXLSTING DRIVEWAY AREA TO REMAIN - - ~- 1635.13F E03nNn e�Ea., Ti1CJieo 1 icb -- TiDIMME 5ED 8nAb0[�OeE I SD"fii' I e •85' 105 ' 200' SNOrMINE M�• .•TrTP-4 J •I SP MANNIEMENTAREA ®RN 5"sR1M EL Q 84.5 - _ •s -F S FR07.Z5ED PETAD1U46 WALL f f SEPARATE APPROVALIU;Qm;tr;D 84� J � _ r• r WALL DRNNAG° TO BE LONNEC.TED afl PROPOSED STORM SYSTEM AND - - e +' DISG4"GED TU TM PUGET 5OUND 1C4y 1DD- 1lb� [15 1.0 0 40 80 Q DRAFT o Source: Prime NW Construction Scale in Feet z g Sommerville Residence Figure LANDAU (Fire Rebuild) Site & Exploration Plan 2 ASSOCIATES Federal Way, Washington CITY OF 'A Federal Way FE01 2016 Crry OF MERALWAY COS REQUEST FOR ADMINISTRATIVE DECISION DEPARTMENT OF COMMUNITY DEVELOPMENT 33325 8`h Avenue South Federal Way, WA 98003-6325 253-835-2607;Fax 253-835-2609 www. cityoffederal way, com FILE NUMBER 1 6 - I q 0 (o Date 17 Feb 16 Applicant NAME PRIMARY PHONE Carlo Evangelisti, P.E. 425-329-0273 BUSINESS/ORGANIZATION ALTERNATE PHONE Landau Associates, inc. 425-778-0907 MMLINr ADDRESS E-MAIL 130 2nd Avenue South cevangelisti@landauinc.com CITY STATE ZIP FAX Edmonds IWA 198020 None Property Address/Location 29604 23rd Ave SW, Federal Way, WA Sommerville Residence Description of Request Drilling one geotechnical boring to a depth of approximately 50ft below existing site grade for geotechnical engineering and analysis for slope stability modeling and to provide geotechnical design parameters for re -construction of a new residence on the property. Boring location is marked with a stake and white flagging in the approximate center of the old building footprint. Drilling is to begin and finish on 23 Feb 16. List/Describe Attachments N o n b For Staff Use ❑ Code Interpretation/Clarification - No Fee " ❑ Critical Areas Letter/Analysis/Peer Review - No Fee (Actual Cost if Applicable) ❑ Request for Extension (Land Use/Plat Approval) - $62/hour ❑ Revisions to Approved Permit - $62/hour ❑ Tree Removal - No Fee ❑ Work Hours Variance - $62/hour ❑ Zoning Compliance Letter - $100 El Bulletin #079 — September 10, 2015 Page 1 of I k:\Ilandouts\Request for Administrative Decision Ref: KCC21 a.12.030 Max Impervious Surface Allowed Max. Bldg. Height Allowed Ref: KCC21 a.12.170 Min Bldg setback from Street Min Garage setback from Street — Min. Bldg. Setback from interior Permit Center Validations: o Zoning o Site Review Not Applicable Validated Signature _ Login Initials IDate: Notice: Historical Landmark ■ Notice: Farmland Preservation ■ Notice: Fire Sprinklers Required • Notice: Served by Septic and/or well ■ Notice: Special Site Conditions • Notice: Flood Elevation Certificate Requii • Notice: Critical Areas Notice on Title Required ■ Notice: Drainage Covenant Required. • Other Notice - -__ PSS Submittal Approvals General Critical Areas Initials -_______ Date______ Wetland/Aquatic Areas Initials _ _ ___ Date—_- Grading/Clearing Initials Date______ Geotechnical Initials -- Date_____ Site Engineering Initials _ Date______ Shorelines Initials ________ Date ------ Fire Initials -------- Date ------ Sprinklers Required? Yes —_ No _-- Zoning SEPA Required? Yes ___ No --- Initials Date __--__ �j �7i GV•vw7 v n ��, �j 1 l e GABION BASKET — 1�` ENERGYDISSIPATER 1 C{�\(•'(..- Je� r� VQ-r • r+"APPROX. LOCATION OF ROCK — >� J 1� SHORELINE PROTECTION APPROX. LOCATION OF — �� UNPROTECTED SHORELINE 0 5 -Tas: _ � f APPROVE[ P LANNNO City of FicWWfty c WC SCALE 5 BSBL it uD8Y _ :at G m's.m 1 i (IN Inch 50 f . r to r(U��! AIf�L e, ?_- ` 75 �jr r � tx_ A— w J4 A .D 5 TIMBER LAGGING BULKHEAD 10 j `� UPPER LIMITS OF THE �s,a•` I FEMA 100- & 500-YEAR 15 I � Ifs 20 w � 4 J 35 c I c 40 I ii 1- 115:1r SO' SHORELINE m 4 5 '�.tr " BUILDING SETBACK tt, eDOWNSPOUTS DR AND FOOTING DRAINS -1 (� \ (� A-✓'�� _ Exl TYPE I I 1 FFGG�CB, ��j�"FJNkNOWN C) 1✓►• ` POINT RAILING TO BE INSTALLED �ETgA�KFg� BETWEEN DRIVEWAY OF S,L AND PROPOSED PORCH _ r ARD i BS -SIDE DRIVEWAY AREA - SF 0O>Z TO BE REMOVED I 7V V• 1� y, yTT �`, 833 SF EXISTING LANDSCAPING 70 .gry WALLS LESS THAN 4' TALL, TO REMAIN EXISTING DRIVEWAY AREA TO REMAIN •• - .• SEO j ATTACHED G' CE 1635 SF --� r e SCS #1 C-3 RIM EL = 76.5' fao5 '' fir• 8 •' 57eWE7PtlitlKYe EXISTING CONCRETE 50 5EA:4 3sosFTO>trc0Lwrt WALL, TO REMAIN EXISTING AREAS OF _.aA (— DRIVEWAY TO BE RESURFACED NOTE: ALL DISTURBED AREAS ARE TO BE b5 a AMENDED PER DETAIL 4 ON SHEET T 3 IN ACCORDANCE WITH THE 2009 KCSW DM. 90 r -IS, 135' 106 105 110 115 120 L-9 Site and Drainage Plan King County 2009 King County Surface Water Design Manual Permit Number: TBD Applicant Name: Prime NW Construction FLOODPLAIN 6" 0 HOPE SDR 32.5 STORIM 35 CONVEYANCE TO BE _'3 C m ABOVE GROUND INS LOPE AREAS THAT EXCEED 40M .40 f 3' x 3' CAST IN PLACE �5 CONCRETE ANCHOR EXISTING WOOD DECK, UNDAMAGED PORTIONS TO REMAIN (APPROX. 468 SF) (271 SF TO BE REMOVED) 35 `may RIM EL YPE_1 1 RIM EL . 63' C-3 T 75 BO I 85 A � a 95 100 105 i 110 I15 )20 - FOOTPRINT OF EXISTING FOUNDATION -1728 SF EXTRUDED CONCRETE CURB TO PREVENT SURFACE FLOW FROM ENTERING BUILDING ENVELOPE PROPOSED RETAINING WALL, DESIGN BY OTHERS APPROXIMATE WALL HEIGHTS SHOWN - Ldrkov-k fAyw"i Wet - --4f O^� Lo 170r i n� 3-1 PROPOSED NEW CONCRETE DRIVEWAY 502 SF TOTAL 200' SHORELINE} MANAGEMENT AREA .. - V t+•►� EXISTING CONCRETE WALL, TO BE REMOVED Parcel Number: 0121039108 Site Address:29604 — 23RD AVE SW Sheet 2 of Sheet 5 CITY OF Federal Way FILE NUMBER 1 6 Applicant RECEZVEf) 8Y CO M M U N ITY & E�'-'O N OQUEST FUR ADMINISTRATIVE DECISION DEVELOPMENT DEPAIRTME DEPARTMENT OF COMAl11iVMDEVELOPMENT FEB2�� 333258`hAvenue South 19 Federal Way, WA 98003-6325 ' 253-835-2607. Fax 253-935-2609 / t 0) � �l♦� ►vw►�sitvnfl'edcralway.eam Date 17 Feb 16 NAME Carlo Evangelisti, P.E. PRIMARY PHONE 425-329-0273 BUSINESS/ORGANIZATION ALTERNATE PHONE Landau Associates, inc. 425-778-0907 MAMING ADDRESS E-MAIL 130 2nd Avenue South cevangelisti@landauinc.com CITY STATE ZIP FAX Edmonds IWA 198020 None Property Address/Location 29604 23rd Ave SW, Federal Way, WA Sommerville Residence Description of Request Drilling one geotechnical boring to a depth of approximately 50ft below existing site grade for geotechnical engineering and analysis for slope stability modeling and to provide geotechnical design parameters for re -construction of a new residence on the property. Boring location is marked with a stake and white flagging in the approximate center of the old building footprint. Drilling is to begin and finish on 23 Feb 16. List/Describe Attachments Figure attached shows approximate boring location. For Staff Use ❑ Code Interpretation/Clarification ❑ Critical Areas Letter/Analysis/Peer Review ❑ Request for Extension (Land Use/Plat Approval) ❑ Revisions to Approved Permit ❑ Tree Removal ❑ Work Hours Variance ❑ 7 nine Compliance Letter - No Fee - No Fee (Actual Cost if Applicable) - $62/hour - $62/hour - No Fee $62/hour � "" -e� � in #079 — September 10, 2015 Page I of I k:\Handouts\Request for Administrative Decision LANDAU ASSOCIATES February 10, 2016 Prime NW Construction 1113 Sleater Kinney Road SE Lacey, Washington 98503 Attn: Ms. Julie Brannberg RE: PROPOSAL FOR GEOTECHNICAL ENGINEERING SERVICES SOMMERVILLE RESIDENCE (FIRE REBUILD) -AMENDMENT FOR DRAINAGE DESIGN 29604 23T-DAVENUE SW FEDERAL WAY, WASHINGTON Dear Julie: Landau Associates (LAI) is pleased to present this additional scope of services and cost estimate for drainage design services for the Sommerville Residence (Fire Rebuild) project in Lacey, Washington. This scope and cost estimate are presented as an amendment to our Proposal for Geotechnical Engineering Services submitted on December 8, 2015. The additional scope presented in this letter is based on discussions with and information provided by you, and telephone conversations with the City of Federal Way (City). Presented below is a summary of our project understanding, and a description of our proposed scope of services. PROJECT UNDERSTANDING We understand that Prime NW Construction has proposed to build a new residential structure to replace the previous residence that was damaged in a fire. The project is located in Federal Way, Washington. The new residence will consist of a basement and two stories with an attached garage. Total livable space of the new residence will be approximately 6,800 square feet occupying approximately 2,050 square feet in plan area. Previously identified steep slope, erosion, and landslide hazard areas occupy the site to the north and south of the proposed residence. LAI is currently under contract with Prime NW Construction to provide geotechnical engineering services for this project, including a geotechnical evaluation and report. Based on feedback from the City on the previous site drainage design submitted by GeoResources LLC, the proposed site drainage controls require additional engineering review and revisions in order for the City to issue a construction approval. ENVIRONMENTAL ( GEOTECHNICAL ( NATURAL RESOURCES 130 2nd Avenue South • Edmonds, WA 98020 • (425) 778-0907 • fox (425) 778-6409 • www.landauinc.com SEATTLE • SPOKANE • TACOMA • PORTLAND SCOPE OF SERVICES The following sections define Landau Associates' proposed tasks for drainage design services to support design and construction of the project. Task 1 consists of the current authorized scope for geotechnical services. Task 2 - Review of Existing and Proposed Drainage: LAI will compile and review readily available site drainage information, including regional topography, City GIS data (including below grade pipe sizes and alignments, and catch basin locations), and construction site plans that include current and proposed impervious areas. This informational review will also include a review of regulatory drainage criteria from the King County Drainage Manual, including the applicable modeling criteria and design storm for sizing the site conveyance structures. Following the initial informational review, we will perform an onsite assessment of the current drainage system, which will include a video survey of the existing below grade pipe that outfalls into Puget Sound. It is anticipated that this pipe is at least 8 inches in diameter and approximately 350 linear feet. This survey will be used to confirm the diameter, material, and condition of the current drainage system. LAI will also develop a hydrological model of current and post -construction site runoff to confirm whether the existing outfall pipe has sufficient capacity to convey the additional flow from the new impervious areas. It is anticipated that we will use either the rational method or the Western Washington Hydrological Model to predict peak flows. Following the modeling and video pipe survey, LAI will prepare a brief technical memorandum. This technical memorandum will define the modeling assumptions, as well as include the detailed modeling results and associated calculations. Additionally, the technical memorandum will include the results of the video pipe survey which will include information on damage to the existing line, existing connections, and existing pipe size. In conclusion, the technical memorandum will address suitability of the existing drainage pipe to accept the flow from the proposed construction. Assumptions: • One stormwater outfall to the Puget Sound already exists, and adding new discharge to this outfall will require no new permits or authorizations beyond City drainage review. • Onsite access will be granted by the owner. ■ Prime NW Construction or the owner will provide proposed impervious area and plans showing roof downspouts. ■ Prime NW Construction or Owner will provide 1-foot contour survey data. • Prime NW Construction or Owner will provide any as -built or design information on the currently permitted pipe and outfall. 2/10/16 X\Pdme NW Construcfion\2015-U_Sommervi11e Residence Fire Rebuild\Sommerville Residence_pro.docx LANDAU ASSOCIATES 2 l Deliverables: • One electronic (PDF) copy of the above -referenced technical memorandum. Optional Task 3 Drainage Plan Set: If, based on the results of Task 2, the onsite drainage is insufficiently sized to accept the predicted post construction storm flows, LAI will prepare a drainage design to manage site flows. In this effort, LAI will review the previously prepared drainage designs, as well as the geotechnical report recommendations prepared under Task 1 and the King County Drainage Manual criteria. Following the review, LAI will prepare a draft plan set for permitting level review by the City. It is anticipated that this plan set will include the following: • Cover sheet • Plan view sheet • Detail sheet ■ Temporary and erosion control measure sheet • Construction notes sheet. This plan set will be created in accordance with Federal Way Municipal Code, King County Code, and outfall requirements established by the United States Army Corps of Engineers. The draft plan set will be submitted by Prime NW Construction or the Owner for permitting review by the City. LAI will review the City review comments and incorporate the agreed upon changes into a final construction level plan set. It is anticipated that these changes will be minor edits that do not require additional sheets. Assumptions: ■ No construction specifications will be provided. • Prime NW Construction or the Owner will be responsible for submitting plan sets for permit review, and paying all associated permitting fees. Deliverables: ■ One permitting level draft drainage plan set • One construction level final drainage plan set. COST ESTIMATE We estimate the additional cost for our proposed scope of services for Tasks 2 will not exceed $12,500. We have included the costs for an Optional Task 3 that will not exceed $16,800. The previously authorized Task 1 will not exceed $17,446. The breakdown of the budget is as follows: Task 2: Review of Existing and Proposed Drainage System $ 12,500 Optional Task 3: Drainage Plan Set (if required) $ 16,800 2110116 X\Prime NW Construction\2015-12_Sommerville Residence Fire Rebuild\Sommerville Residence pro.docx LANDAU ASSOCIATES 3 We propose to provide the above -described services on a time -and -expenses basis according to the budget set forth above and the attached fee determination summary sheets. In the event the project requirements change, or unexpected conditions are disclosed that appear to require further field effort, study, or analysis, we will bring these to your attention and seek your written approval for an addendum to the scope of services and costs prior to performing additional services. PROJECT ASSUMPTIONS We have assumed the following as the basis for preparation of our scope of services and estimated cost: ■ Prime NW Construction will provide Landau Associates the current project civil and architectural plans in AutoCAD (if available) or PDF format. ■ Consultation and support for stormwater discharge permitting is not included. ■ The City of Federal Way will be copied on all written correspondence, including emails, between Landau Associates and Prime NW Construction. SCHEDULE It is anticipated that Task 2 can be completed within three weeks of notice to proceed. If Task 3 is required and authorized, it is anticipated that the permitting level draft designs will be completed within 3 to 4 weeks. Following permitting review by the City, the agreed upon changes will be implemented and final construction drawings will be issued within 2 weeks. AUTHORIZATION Please provide us with written authorization by signing in the space provided below and returning one signed original of this proposal amendment. We appreciate the opportunity to work with Prime NW Construction on this project. Please let us know if you have any questions about our proposed scope of services and budget for this project. LANDAU ASSOCIATES, INC. Carlo Evangelisti, P.E. Senior Geotechnical Engineer Chip Halbert, P.E. Principal Engineer 2/10/16 X\Prime NW ConsWckn\2015-12 Sommerville Residence Fire Rebuild\Sommerville Residence pro.docx LANDAU ASSOCIATES 4 ALB/KMS/CE/CPH/rgm 2016-2958 Attachments: 2016 Compensation Schedule General Conditions TASK 2 AUTHORIZATION The scope of services and contractual conditions as described in this proposal amendment are accepted and Landau Associates, Inc. is authorized to proceed with Task 2. ILM For Signature* Firm* Printed Date * Name of person with contractual authority and firm responsible for payment of Landau Associates, Inc. billing. *Prime NW Construction 1113 Sleater Kinney Road SE Lacey, Washington 98503 2/10/16 ANme NW Consbuction\2015-12_Sommerville Residence Fire Rebuild\Sommerville Residence_pro.docx LANDAU ASSOCIATES 5 TASK 3 AUTHORIZATION The scope of services and contractual conditions as described in this proposal amendment are accepted and Landau Associates, Inc. is authorized to proceed with Optional Task 3. M. For Signature* Firm* Printed Date * Name of person with contractual authority and firm responsible for payment of Landau Associates, Inc. billing. *Prime NW Construction 1113 Sleater Kinney Road SE Lacey, Washington 98503 2/10/16 )(\Prune NW ConstrucUon\2015-12_Sommerville Residence Fire Rebuild\Sommerville Residence—pro.dom LANDAU ASSOCIATES 6 LANDAU COMPENSATION SCHEDULE - 2016 1A_ ASSOCIATES Personnel Labor Hourly Rate Senior Principal 250 Principal 225 Senior Associate 205 Associate 185 Senior 165 Senior Project 150 Project 137 GIS Analyst 137 Senior Staff / CAD Designer 121 Staff / Senior Technician II 107 CAD / GIS Technician 107 Project Coordinator 98 Assistant / Senior Technician 1 94 Technician 78 Support Staff 67 Expert professional testimony in court, deposition, declaration, arbitration, or public testimony is charged at 1.5 times the hourly rate. Rates apply to all labor, including overtime. Equipment Field, laboratory, and office equipment used in the direct performance of authorized work is charged at unit rates. A rate schedule will be provided on request. Subcontractor Services and Other Expenses Subcontractor billing and other project expenses incurred in the direct performance of authorized routine services will normally be charged at a rate of cost plus a twelve percent (12%) handling charge. A higher handling charge for technical subconsultants and for high -risk field operations may be negotiated on an individual project basis; similarly, a lower handling charge may be negotiated on projects requiring disproportionally high subconsultant involvement. Invoices Invoices for Landau Associates' services will be issued monthly. Interest of 1% percent per month (but not exceeding the maximum rate allowable by law) will be payable on any amounts not paid within 30 days. Term Unless otherwise agreed, Landau Associates reserves the right to make reasonable adjustments to our compensation rates overtime (e.g., long-term continuing projects). T: Templates\Contracts\Compensation Schedule 2016A Landau Associates LANDAU GENERAL CONDITIONS [A ASSOCIATES SERVICES TO BE PROVIDED — Landau Associates agrees to provide Client, for Client's sole benefit and exclusive use, the consulting services identified in Landau Associates' proposal. This Agreement gives no rights or benefits to anyone other than Client and Landau Associates. CLIENT FURNISHED INFORMATION — Client shall provide to Landau Associates information regarding the property location, property limits, the location of any buried utilities or structures, and any requirements for entry or work permits, security clearances, licenses or any other required permissions. Landau Associates shall not be liable for damage or injury arising from damage to subterranean structures (pipes, tanks, pipelines, etc.) that are not identified by Client. If the property is not owned by Client, Client shall obtain right -of -entry for the purpose of our services. OWNERSHIP OF DOCUMENTS — Unless otherwise agreed, all logs, notes, calculations, reports and other documents prepared by Landau Associates are the property of Landau Associates. Client is responsible for appropriate use of the information and recommendations contained in Landau Associates' reports and other written correspondence. Any and all such information and recommendations are provided for and are relevant to specific projects, as identified; any reuse of such information for extensions of a project, or disregard for or deviation from Landau Associates' recommendations or for any other project shall be at Client's sole risk and without liability or legal exposure to Landau Associates. STANDARD OF CARE AND LIMITATION OF LIABILITY — Landau Associates' services will be performed with the degree of skill and diligence normally employed by engineering professionals performing similar services in the Northwest at the time services are performed. No other warranty or representation, either express or implied, is included or intended in our proposals, contracts, reports, and communications. To the fullest extent permitted by law, Client expressly agrees to limit any and all claims of Client, including but not limited to claims alleging negligence, breach of contract, or breach of warranty against Landau Associates and/or its employees, for all losses of any kind, including economic loss, to an amount not to exceed the total fee paid under this Agreement or $50,000, whichever is greater. If Client desires a higher limit, Landau Associates may agree to an increased limitation for additional consideration. In the event Client makes a claim against Landau Associates, at law or otherwise, for alleged negligence, error, omission, breach, or other act arising out of the performance of professional services, and Client fails to prove such claim, Client shall pay all costs incurred by Landau Associates in defending itself against the claim. CLIENT INDEMNIFICATION —Client acknowledges that Landau Associates is not responsible for the creation or presence of contamination or pollution, if any, at the property. Client agrees to indemnify, defend, and hold harmless Landau Associates and any of its officers and employees from and against any claim, suit, action, or liability due to or related to contamination conditions at the property except to the extent such claim, suit, action, or liability is caused by the negligence of Landau Associates. For the purposes of this clause, contamination conditions shall mean the actual or alleged existence, discharge, release, or escape of any irritant, pollutant, contaminant, or hazardous substance into or upon the atmosphere, land, groundwater, surface water, or sediment of or near the property. Landau Associates will promptly notify Client of contamination conditions, if identified. SITE SUPERVISION — Landau Associates has no overall supervisory authority or actual and/or direct responsibility for the specific working conditions at the site and/or for any hazards resulting from the actions of any trade contractor. Unless expressly provided in the scope of services, Landau Associates has no duty to inspect, supervise, note, correct, or report any health or safety deficiencies of Client, contractors, or other entities or persons at the project site not employed or subcontracted by Landau Associates. PAYMENT— Invoices for Landau Associates' services will be issued monthly, payable upon receipt. Interest of 1'% percent per month (but not exceeding the maximum rate allowable by law) will be payable on any amounts not paid within 30 days, payment thereafter to be applied first to accrued interest and then to the principal unpaid amount. Any attorney's fees or other costs incurred by Landau Associates in collecting any delinquent amount shall be paid by Client. SAMPLE RETENTION — Unless other arrangements are made, uncontaminated samples will be discarded in accordance with applicable regulations 30 days after testing is complete. Contaminated or hazardous materials samples not destroyed by testing remain the property of Client and will be returned to Client or project site for disposition as directed by Client. SUSPENSION OR TERMINATION — If Client requests suspension or termination of our services prior to completion, Landau Associates reserves the right to complete such analyses and records as are necessary to place the files in order, and, when necessary to protect our professional reputation, to complete a report on the services provided to date. Client shall compensate Landau Associates for personnel time and all reasonable expenses at current rates required to accomplish such closing. TIME BAR TO LEGAL ACTION —The parties agree that all legal actions by either party against the other concerning the services provided under this Agreement shall be barred two (2) years after the completion of services by Landau Associates. SEVERABILITY AND SURVIVAL — In the event that any provision of this Agreement shall be held invalid and unenforceable by a decision of a court of competent jurisdiction, the remaining provisions shall be valid and binding. All terms of this Agreement allocating or limiting liability shall survive the completion of the services hereunder and the termination of this Agreement. PRECEDENCE —These general conditions shall take precedence over any inconsistent or contradictory provisions contained in any proposal, contract, purchase order, notice to proceed, or like document regarding Landau Associates' services. T:Templates\Contracts\General Conditions Landau Associates