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12-102786
REQEIVED BY COMMUNITY DEVELOPMENT DEPARTMENT 4�� CITY OF • -._ - Federal Way Date: Jul 0 9 L'�J.-1 WETLAND CONSULTANT AUTHORIZATION FORM June 25, 2012 City: City of Federal Way Department of Community and Economic Development 33325 8th Avenue South Federal Way, WA 98003 Consultant: Matthew Boyle Grette Associates 2102 North 30`h Street, Suite A Tacoma, WA 98403 Project: Auyeong Property — Wetland Delineation and Stream Verification Parcel #720480-0040 File No.: 12-102786-00-AD Project Proponent: Geoffrey Auyeong 2647 South Star Lake Road Federal Way, WA 98003 Project Planner: Becky Chapin, Assistant Planner (253-835-2641) Documents Provided: o Wetland Delineation and Stream Investigation prepared by Western States Environmental, Inc., dated July 25, 2008. Task Scope: Applicant has stated the onsite wetland is a Category III, with 25-foot buffer, and is not connected to the Category II wetland to the south. Applicant also has stated the "unclassified" onsite stream shown on the map is a drainage way and does not utilize correct criteria to determine if it meets the city's definition of major or minor stream. • Wetland and Stream Study Review • Site visit as needed • Memorandum of findings ■ Possible meeting with project applicant Task Schedule: Provide task cost estimate by July 9, 2012. Task Cost: Not to exceed $ 1 tj • 00 without a prior written amendment to this Task Authorization. Acceptance: City of Federal Way (Planner) (Consultant) (Project Proponent) Date 1 Date Date 12-102786 Doc. LD. 61521 CITY QF Federal Way July 6, 2012 Geoffrey Auyeong 2647 South Star Lake Road Federal Way WA„ 98003 CITY HALLFILE 33325 8th Avenue South Federal Way, WA 98003-6325 (253) 835-7000 www.cityoffederalway.com RE: File #12-102786-00-AD; WETLAND CONSULTANT REVIEW ESTIMATE Auyeong Wetland Review, 2647 South Star Lake Road, Federal Way Dear Mr. Auyeong: Enclosed please find a Wetland Consultant Task Authorization for wetland status verification for the above - mentioned property. Grette Associates (Grette), the City's wetland consultant, was asked to provide an estimate for their review of the Wetland Delineation and Stream Investigation report prepared by Western States Environmental, Inc., submitted by you. The Grette task authorization and task scope is enclosed. The normal course of action is for the City to set up an account to be funded by the applicant and drawn down by the work performed by Grette. Please note that if any of the funds are not used, they will be returned to the applicant. At this point, please review the proposed Grette task authorization. If you agree with the cost estimate of $1,462.00, your signature on the City's `Wetlands Consultant Authorization Form' and the consultant fee must be submitted before the review will commence. In addition to the consultant fee, the City will also collect a land use review fee based on actual staff time spent. We are requesting a $300.00 deposit to cover these fees, and any unused portion will be refunded to you at the complete of the project. A check for both the review and consultant fee in the amount of $1,762, payable to the City of Federal Way, is due before the review will commence. Following receipt, I will authorize Grette to begin their formal review. If you have any questions regarding this letter or your project, please contact me at 253-835-2641 or rebecca.Chapin@cityoffederalway.com. Sincerely, Be cky Chapin Assistant Planner enc: Wetland Consultant Task Authorization Form dated June 25, 2012 Grette Associates, Task Scope/Authorization Form dated June 29, 2012 City of Federal Way Invoice c: Chul Kim, P.O. Box 69517, Seattle, WA 98618 Orette Associatesl.LC ENVIRONMENTAL CONSULTANTS To: Becky Chapin, Associate Planner City of Federal Way Department of Community and Economic Development 33325 8"' Avenue South Federal Way, WA 98003 Phone (253) 835-2641 Proponent: Geoffrey Auyeong 2647 South Star Lake Road Federal Way, WA 98003 SENT VIA: ❑ Mail ❑ Hand Delivered ❑ Fax ® Email: DESCRIPTION OF WORK: TASK 100 Wetland and Stream Study Review Date: 06/29/12 Project # 205.014 Project Auyeong Property Wetland Name: Delineation/Stream Verification Review Project 2647 South Star Lake Road Address: Federal Way, WA 98003 Project Scott Maharry Manager: Senior Biologist File No.: 12-102786-00-AD Grette Associates will perform a thorough review of the Wetland and Stream Investigation Report prepared by Western States Environmental, Inc., dated July 25, 2008, and associated documents provided by the City of Federal Way (City). The report will be reviewed for conformance with Federal Way Revised Code (FWRC) Title 19 Division V. Wetland and Stream Status Verification Site Assessment Grette Associates will visit the Applicant's property and review the delineated wetland line to determine accuracy. The review will be based on the methodology of Washington State Department of Ecology's (Ecology) Washington State Wetlands Identification and Delineation Manual, the US Army Corps of Engineers' Wetlands Delineation Manual, and associated regional guidance letters. Based on these manuals, wetland boundaries will be verified using vegetation, soil characteristics, and hydrologic features. This Task assumes that wetland delineation flagging is present, readily visible, and accurately labeled and consistent with the delineation figure supplied with the wetland delineation report. The wetland categorization and buffer determination will also be reviewed for accuracy during the site visit. The locations and descriptions of the "drainage ways" will also be verified. A determination will be made if the drainage ways meet the City's definition of a major or minor stream. Memorandum of Findings Grette Associates will prepare a Technical Memorandum containing response as to the categorization of the wetlands and streams. The prepared memorandum shall also include a discussion of the connections between the wetlands and streams and their associated buffers. In the event that Grette Associates finds errors in the report, categorization, or delineated line, the Applicant's consultants will be responsible for making the appropriate corrections. If consensus can not be reached, a third party of the City's choice may be contracted to provide an additional professional opinion. Meeting with Applicant This scope includes an additional three (3) of time for a possible meeting with applicant. If this meeting does not occur, this time will not be charged. Additional Assumptions and Responsibilities 2102 North 30`h Street, Ste. A Tacoma, WA 98403 Ph: 253.573.9300 Fx: 253.573.9321 The Client shall secure permission from the current property owner for Grette Associates staff to access the property in order conduct the necessary field work. In the event that additional review of documents or subsequent site visits are necessary, an addendum to this scope of work may be necessary. An estimated budget for this project is as follows: Staff Rate Units Total Senior Biologist $120.00 1 $120.00 Biologist $90.00 14 $1,260.00 Administrator $70.00 1 70.00 Milea a $0.60 20 12.00 TOTAL TASK 100 1,462.00 ® TIME AND EXPENSE Estimated Amount: $1,462.00* *This total includes three (3) hours for a possible meeting with the project applicant. If no meeting occurs, this time will not be charged. CLIENT AUTHORIZATION: Our office must be in receipt of a signed faxed or emailed copy (preliminary authorization) of this contract before we can begin any work on the project. We must receive two signed originals within two business days of receiving the signed preliminary copy or we will cease work on the project until the originals have been received. The undersigned authorizes the above requested services and agrees to pay for these services within 30 days of receiving the invoice. Failure of payment within the specified 30-day period will result in a late payment penalty of a $64.00 processing fee and an interest charge of 2% of the past due amount levied at each subsequent invoice cycle. In consideration of Consultant's agreement to perform the services set forth above, Client and Consultant agree to limit the liability of Consultant to Client, and to all other persons or entities, arising from professional acts, errors, or omissions of Consultant, and for liability arising out of or relating to this contract, such that the total aggregate liability of Consultant, including attorneys fees awarded pursuant to this Agreement, that all those named shall not exceed $50,000 or the total fee of Consultant for the services rendered under this agreement, whichever is greater. This contract will expire if it remains unexecuted for 60 days after the above listed date. If client wishes to pursue this work after 60 days' time, Grette Associates staff may issue a new contract based current workload availability and rate status. This agreement may be terminated at any time by the Client upon written notice to the Consultant, or by the Consultant upon written notice to the Client. In the event of such termination by the Client, the Client shall pay to the Consultant all costs of work performed to the date of termination. Client Name City of Federal Way Date Signature Becky Chaplin, Associate Planner Grette Associates Date Matthew Boyle, Principal Biologist GRETTE ASSOCIATES Cc: Accounting 1' Wetland Delineation and Stream Investigation 2647 Star bake Road South, Federal Way, Washington Prepared by: Western States Environmental, Inc. Prepared for: Mr. Geoffrey Auyeong Property Owner July 25, 2008 RECEIVED JUN 19 2012 CITY OF FEDERAL WAY CDS Western States Environmental, Inc. Mr. Geoffrey Auyeong July 25, 2008 RE: Star Lake Road Wetland Delineation/Stream Investigation PO Box 69 Seattle, WA 98168 Dear Mr. Auyeong; Western States Environmental, Inc. is pleased to present to you this Wetland Delineation and Stream Investigation for the property located at 2647 Star Lake Road South, Federal Way, WA. This study was prepared under contract with WSE, and in accordance with the requirements of local jurisdictions: first, the City of Federal Way Critical Areas Ordinance (known as Shoreline Master Plan Appendix A), and additionally, incorporating the King County Critical Areas Ordinance (Chapter 21 A.24). This study was performed using WA State Department of Ecology Wetland Delineation protocols (Ecology Publication #96-94), with slight modifications. This study is a limited study, which was contracted to provide assessment of the possible existence of wetland(s) and/or stream segments on the Site. This study does not include civil surveying, civil survey maps, or other diagrams or figures, other than what was contracted and has been provided within this report. No planned use, action, or development intention has been disclosed to WSE at the time of this report; thus, this study is not intended as a comprehensive delineation to be used as an application for development or development mitigation. Additional information, research, or assistance, can be provided, but will require additional contract. Study of the Site included research of federal, state, and local data, supporting evidence, GIS maps, soil maps and aerial photos, as well as data collected in the field; as a result, the following conclusions were drawn: One wetland, (WETLAND A,) was found to exist near the southeastern corner of the Site, and measures 65 feet, to the edge of the interior, by 91 feet (at the longest edge), for a total of approximately 5,915 square feet. Hydrological connection was found between WETLAND A and a large Category II wetland off -Site, directly to the south of the Site. DRAINAGE WAY A provides a portion of the hydrological influence to WETLAND A, and originates to the wetland via culvert, underneath a water tower access road which separates the two parcels. Additional r influences appear to contribute to seasonal standing water in WETLAND A, in the form of sheet flow across the driveway, during heavy rain events; and hillside runoff from the steep access driveway, which rises sharply at a grade of over 15%, from the southeast corner of the Site. Both DRAINAGE WAY A and WETLAND A have been found to have been almost certainly significantly influenced by increased hydrological input beginning roughly ten years ago, which is attributed to up -slope development, in and in conjunction with a constructed stormwater mitigation pond built for runoff from the development. WETLAND A was rated using WA State Department of Ecology's Western Washington Wetland Rating System protocol, and received a score that assigns it a rating of Category III. The buffer for development near a Category III wetland is 25' feet for wetlands between 2,500 and 10,000 square feet in area (City of Federal Way Critical Areas Ordinance). However, the Category II wetland adjacent to the south of the Site is rated as a Category II and will require a 100 foot buffer (including the area of the water tower access driveway), along the southern border of the Site. Modifications to this buffer may be made according to City of Federal Way ordinances, provided mitigation/restoration/enhancement plans are approved. Note that all final authority rests with the appropriate agencies. A second drainage way, (DRAINAGE WAY B,) also stems from the Category II wetland off -Site to the south, and flows from the southwestern border toward the central portion of the northern border of the SITE, and appears to be either a natural drainage way, or one constructed when the Site was developed in the early 1930s, possibly for agricultural pursuits. Whether man-made or natural, DRAINAGE WAY B was found to be unlikely to provide local priority fish habitat or rearing areas, as it drains directly into a 12" grated culvert which is piped underground, through stormwater conveyance system, to Star Lake. It is foreseeable that both DRAINAGE WAY A and B will likely need to be preserved, restructured, and/or improved, for storm water mitigation capacity, especially if development on the Site is ever proposed. Thank you for the opportunity to provide you with this study. Please do not hesitate to call if you have any questions or comments. Regards, <s>Erika Wittmann, M.E.S. Western States Environmental TABLE OF CONTENTS I. INTRODUCTION...................................................................................................................... 6 H. METHODS.............................................................................................................................. 7 III. RESULTS AND DISCUSSION............................................................................................... 7 IV. CONCLUSIONS ........................ .....................-..............................................I....I.......... 17 V. LIMITATIONS.—_........... .................. _9 ... __ ..................... ........ ....... — .............___ ....... 19 VI. REFERENCES........................................................... ............................... I ................... ......... 20 VII. APPENDICES ........................................................................... ......... ...... ....... I..................... 21 APPENDIXA: FIELD DATA SHEETS................................................................................. 22 APPENDIX B: PHOTOGRAPHIC LOG............................................................................... 28 APPENDIX C: WA FISH AND WILDLIFE TES MAPS (FOLDED) ................................ 35 FIGURES: FIGURE 1: Area Location Map (Google Earth) FIGURE 2: Site Map (Google Earth) FIGURE 3: Topography (King County iMap) FIGURE 4: Soil Survey Map (Natural Resources Conservation Service) FIGURE 5: Drainage Map (Google Earth) FIGURE 6: Site Sketch (Google Earth) FIGURE 7: Aerial Photo (1938, King County iMap) TABLES: TABLE 1: CITY OF FEDERAL WAY, WA, WETLAND CATEGORIES AND STANDARD BUFFER REQUIREMENTS I. INTRODUCTION Western States Environmental, Inc. was contracted to perform this wetland delineation and stream investigation by Mr. Geoffrey Auyeong, current property owner. The delineation was performed for purposes of gaining knowledge of the possible wetland and drainage areas on the parcel. Any plans for development were not disclosed to Western States Environmental at this time. This wetland delineation/ stream investigation was performed on the property located at 2647 South Star Lake Road, Federal Way, Washington. The 4.05 acre parcel (Parcel # 7204800040) is located within the City of Federal Way, Township 22, Range 04 E, Section 33, NE Quarter. Figure 1 (below) illustrates the property (hereafter referred to as SITE) within the general area: FIGURE 1: AREA LOCATION MAP The SITE was visited on two consecutive days, June 12`h and 13"' of 2008. Both days began as overcast, turning to sun breaks with partial clouds, and finally full sun. Ambient temperatures ranged from approximately 60. to 70 degrees, with only trace precipitation within the past 48 hours. Erika Wittmann, M.E.S., represented Western States Environmental, Inc. as delineator. Western States Environmental, Inc. Page 6 II. METHODS Sources of existing information used in this delineation included: Natural Resources Conservation Service (MRCS) Soil Survey maps, City of Federal Way Interactive GIS for Critical Areas, WA State Department of Fish and Wildlife Information Technology Services (GIS) Habitats and Species Maps, WA State Department of Natural Resources Water Typing GIS Application, King County iMap interactive GIS, a 1938 aerial photo, and an interview with the former property owner, Mr. Steven Dunn. Methodology used in this delineation were slightly modified from those outlined in the WA State Department of Ecology Wetland Delineation Manual (1997) and the US Corps of Engineers Wetland Delineation Manual (1987). Due to budget constraints and the size of the SITE, representative plots were chosen, instead of transects. Plot locations (Plots 1-5) were chosen based on the representative majority of vegetation communities, as well as soil characteristics and hydrology patterns. Plots were chosen as round plots, with a six-foot radius, and every identifiable plant, animal, insect, hydrology and soil characteristic was noted on data forms, as well as soil characteristics. Soil characteristics were examined by digging soil pits to a minimum of 18 inches, or two soil horizons. The soil pits were also used as the center point of the plot radius. Plant dominance was established via estimated coverage for each species, as well as its stratum, and noted on the Field Data Forms (APPENDIX A). Finally, the area found to be consistent with wetland characteristics outlined in the methods was then rated using the Washington State Wetland Rating System for Western Washington (WA Dept of Ecology, 2002). Plots and flagging were labeled according to King County Wetland Delineation Criteria. Plots are flagged with pink and blue flagging, and placed on stakes next to the soil pits. Flagging of Drainage Ways identified as A and B is orange in color, tied to wooden stakes, and placed at intervals no greater than 40 feet. Smaller flags with the same color corresponding to that on the stakes, were tied on persistent vegetation, where possible, to aid in locating the stakes or plots. Flagging around the area identified as Wetland A is pink in color, tied to stakes, and placed at intervals no greater than 25 feet in the wooded area, as required by King County (Wetland Delineation Criteria, 2007). Refer to APPENDIX B: Photographic Log for photo reference. III. RESULTS AND DISCUSSION A. DESCRIPTION OF THE SITE The SITE consists of several general plant communities, which correspond with hydrological and wetland characteristics in and near the SITE. The following Site map (FIGURE 2, below) displays existing lot lines, existing roads, existing streets, structures, drainage ways, wetlands, steep slopes, and significant trees. Western States Environmental, Inc. Page 7 A. DESCRIPTION OF THE SITE, CONT. 1. Topography: The 4.05 acre parcel slopes gradually downward (estimated 3% slope) from the southwest border of the SITE, toward the northeast and west, for approximately 100 feet. The parcel also slopes gradually downward from the northeast border of the SITE (Star Lake Road South) toward the northeast and central portions of the SITE. Drainage Ways A and B (see Hydrology section) both follow the topography of the SITE. Elevations generally follow this bowl -shaped pattern, with elevations of approximately 370 feet above sea level at the southwest border, to 340 feet at the southwest and the central/northeastern portions of the SITE. Directly to the south of the SITE, a drop in elevation is consistent with the wetland located on the adjacent parcel; elevations on that parcel range from 340-365 feet above sea level. To the northeast of the SITE, across Star Lake Road South, elevation rises gradually to reach 380 feet. To the north of the SITE, in a developed area, topography is relatively flat, at 340 feet above sea level. FIGURE 3: TOPOGRAPHY Western States Environmental, Inc. Page 8 2. Plant Communities: Three different general plant communities were observed and analyzed within Plots I- 5. The first was in Plot 1, located within Wetland A. See Plot 1 description below for species information. The second was located in the area of Plots 2 and 3 (see below). The third was located in the area of Plots 4 & 5, and was similar to that of Plots 2 and 3. Plots 2, 3, and 5 have been disturbed by frequent mowing in past years. A fourth general plant community, located along Drainage Way 2, (from approximately 60 feet north of Plot 5 to the northern border of the property,) was also observed, and includes Vine Maple (Acer circinatum), Red Alder (Alnus rubra), Black Cottonwood (Populus balsamifera), Douglas Fir (Pseudotsuga menziesii), Himalayan Blackberry (Rubus discolor), Trailing Blackberry (Rubus ursinus) Salmonberry (Rubus spectabilis), Foxglove (Digitalis purpurea), and several other understory species. See Plot Data Forms for specific information (APPENDIX A). Plot 1: Plot 1 was conducted within the central to southwestern area of Wetland A (see further reference below — Hydrology section). The Plot was chosen as a representative of the plant community in the area identified as Wetland A (see FIGURE 2 — SITE MAP). Dominant overstory vegetation includes Alder, (Alnus rubra), and two species of Willow (Salix sp.). Overstory cover over the plot is estimated at 60%. A downed willow exceeding 12" in diameter is located within the plot (Salix sp.), extending for some 30 feet outside the plot. Understory vegetation consists of a majority of Large -leaved Averts (Geum macrophyllum), Creeping Buttercup (Ranunculus repens), and two moss species, Cat -tail Moss (Isothecium myosuroides) and Lyell's Bristle Moss (Orthotrichum lyellii). Minority species representations observed included Purple -leaved Willowherb (Epilobium ciliatum), Salmonberry (Rubus spectabilis), Kentucky Bluegrass, (Poa pratensis), and Horsetail (Equisetum arvense). Out -of -plot species included American Brooklime (Veronica beccabunga), Bracken Fern (Pteridium aquilinum), and Tansy Ragwort (Senecio jacobaea). Plot 2: Plot 2 was conducted directly next to Drainage Way A, in the center of the large field that comprises the majority of the western half of the SITE. No overstory vegetation exists within the 6-foot radius of this plot, which was located directly next to Drainage Way A, near the center of the north -running 12" wide waterway. Understory vegetation includes a majority of Creeping Buttercup (Ranunculus repens), and Reed Canarygrass (Phalaris arundinacea). Other minority understory vegetation included Colonial Bentgrass (Agrostis capillaris), Orchard Grass (Dactylis glomerata), Velvet Grass (Helena lanatus), Perennial Ryegrass (Lolium perenne), Quackgrass (Agropyron repens), and Common Rush (Juncus effusus). Out -of -plot species included Bird's -foot Trefoil (Lotus pedunculatus), and Tansy Ragwort (Senecio jacobaea), both invasives, as well as an unidentified sedge species, (Carex sp.,) perhaps Smooth Sedge (Carex laeviculmis). Hydrological evidence indicates that rush, sedge, and other FACW species likely only persist through the wetter months of the year (October -March). FACW species may persist through the early months of summer due to increased hydrological influence. This conclusion is based on evidence acquired during an interview with former property owner, Mr. Steven Dunn. Western States Environmental, Inc. Page 9 —1 'i Plot 3: Plot 3 was conducted in the northwestern corner of the large field on the western half of the SITE. No overstory vegetation exists within the 6-foot radius of this plot, which was located near the western -central portion of the SITE. Understory vegetation observed included Kentucky bluegrass (Poa pratensis), Colonial bentgrass (Agrostis capillaris), Bearded fescue (Festuca subulata), Dandelion (Taraxacum officinale), English plaintain (Plantago lanceolata), Creeping buttercup (Ranunculus repens), and Red clover (Trifolium wormskjoldii). Out -of -plot species observed included Small -headed clover (Trifolium microcephalum), Smooth hawksbeard (Crepis capillaries), and Perennial Ryegrass (Lolium perenne). Plot 4: Plot 4 was taken directly within the channel which forms Drainage Way B. Overstory vegetation exists within the 6-foot radius of this plot, which was taken within Drainage Way B. A medium-sized Western White Pine (Pinus monticola) lies directly west of the Drainage Way, providing overstory cover to the Drainage Way. Understory vegetation includes a majority of Water -Parsley (Oenanthe sarmentosa), which is growing directly in the waterway. The Water -Parsley exceeds the width of the channel and extends to large portions of the banks. The species is so thick that water flow is restricted. Minority species included Velvet grass (Helena lanatus), Kentucky bluegrass (Poa pratensis), as well as Creeping Buttercup (Ranunculus repens), Hairy Cat's Ear (Hypochaeri.s radicata), and Morning Glory (Convolvulus arvensis), which are all three invasives. Plot 5: Plot 5 was located directly beside Drainage Way B, roughly 7 feet from Plot 4. No overstory vegetation exists within the 6-foot radius of this plot, which was taken directly to the east of Drainage Way B, next to the channel. The majority of the undersrory vegetation at this plot is Kentucky Bluegrass (Poo pratensis), which exists as the front lawn of the residence. Other minority species included Water -Parsley (Oenanthe sarmentosa), Dandelion (Taraxacum offtcinale), American Brooklime (Veronica beccabunga), Timothy grass (Phleum pretense), and the invasive Creeping Buttercup (Ranunculus repens), Hairy Cat's Ear (Hypochaeris radicata), and Morning Glory (Convolvulus arvensis). 3. Rare Plant and Priority Habitats and Species Information: No Natural Heritage plant communities, rare plants, or high -quality wetlands were found to be on -site during web research (WA DNR Natural Heritage Program online 6/17/08). Washington State Fish and Wildlife Priority Habitats and Species GIS database contains documentation of the wetland directly to the south of the SITE, listed as one of "several isolated wetlands along coastal southwest King County." Several Priority Habitats, wetlands, are located within a mile of the SITE, but, with the exception of the Category II wetland to the south of the SITE, none appear to exist as corridors to, or are connected with the SITE. Western States Environmental, Inc. Page 10 One Priority Species is noted within 1 mile of the Site: Priority Resident Fish Species, Residential Coastal Cutthroat. The Stream referenced (LLID # 1222591473580) is hydrologically connected to the northeastern portion of Star Lake, to the northeast of the SITE. No evidence has been discovered, or observed while on -site, that the fish are able to, or do, migrate through any other passageway (See WADFW maps, APPENDIX Q. Drainage Ways A and B (defined in Hydrology Section, below,) drain through underground storm system piping, to Star Lake. WA State Department of Natural Resources denotes Water Type "U" as "unclassified," and there is no recorded information available at this time, documenting the presence of fish or amphibian species in Drainage Ways. 4. Soils Mapped and Found: Soils mapped (MRCS) and found over the SITE consist of a majority of Alderwood gravelly sandy loam, 6 to 15 percent slopes, over the north, west and southern majority of the SITE (83.3%). An estimated 5.2% portion of the SITE consists of soils mapped as Everett gravelly sandy loam, 5 to 15 percent slopes, and approximately 0.7% of the southeast -central portion of the SITE consists of Tukwila muck. The southwestern border of the SITE (approximately 10.7%) also includes Alderwood gravelly sandy loam, but with the difference of 15 to 30 percent slopes. See FIGURE 4, below (NRCS map): FIGURE 4: SOILS MAP Western States Environmental, Inc. Page I l The area covered by Alderwood gravelly sandy loam is considered to be a hydric soil, and is classified taxonomically as "loamy -skeletal, mixed, mesic Vitrandic Durochrepts." (MRCS Official Soils Description). Soils found during this study tend to confirm the presence of Alderwood gravelly sandy loam on Plots 1, 2, 4, and 5. All plots included fine sand and fine gravely loams, with matrix tones ranging from 2.5 YR to IOYR, varying in mottle presence and abundance, and degree of moisture, from somewhat moist to very wet. However, variations from the NRCS Official Soil Series Description, in composition, matrix and value, occur within different horizons and on Plots 1, 2, and 5. See Plot Data sheets for specific information (APPENDIX A). 5. Hydrology Information Hydrological evidence gathered prior to SITE visit included City of Federal Way Critical Areas GIS mapping, which identified an "unclassified stream" as crossing the SITE (Drainage Way B). WA State Department of Natural Resources denotes Water Type "U" as "unclassified," and there is no recorded information available at this time. Additionally, the SITE lies in an area classified by King County GIS mapping (iMap) as "Highly Susceptible to Groundwater Contamination." This is likely partially due to the high groundwater table in the general area, as well as the soil and hydrological characteristics of nearby areas. Hydrology on the SITE, (as observed during Site visits and as described in an interview with former owner, Mr. Steven Dunn,) consists of influence to two Drainage Ways, and one Wetland: The first Drainage Way, hereafter to referred to as Drainage Way A, flows from the identified Category II wetland (Federal Way Interactive GIS, URS Corp Survey, 2002) located on the parcel adjoining the southern border of the SITE, through a culvert under the access road to the water tower, (which is located to the west, above the SITE,) and north to the northern border of the SITE. Drainage Way A then bends to the east and flows along the northern border of the SITE into a 12" grated storm drain culvert in the center of the northern border. The system eventually flows to Star Lake, approximately one-third of a mile to the northeast. (See APPENDIX B: PHOTO LOG). Adjoining the southeast entrance of Drainage Way B into the SITE, a wetland, hereafter referred to as Wetland A, exists at the lowest topography, at the SE border of the SITE. Wetland A is identified as a roughly half -circle shaped area of 65 feet in depth by 91 feet in length, with the longest edge located along the access driveway to the water tower. Drainage Way A partially serves to drain this wetland, during the rainy season, when water levels are high. Drainage Way A also serves to drain the Category II wetland (Federal Way GIS) across the access driveway, to the south. It is a seasonally flooded wetland, which was observed to hold standing water when the SITE was first visited in early March, though no standing water was observed during the delineation visit in June. Observations lead to the conclusion that Wetland A is likely inundated during portions if not all of the rainy season, roughly October -March. Western States Environmental, Inc. Page 12 A second Drainage Way, hereafter referred to as Drainage Way B, flows from the southeastern corner of the SITE, from the Category II wetland, adjoining the southern border of the SITE, and curves gently to the north and flows toward the northern border of the SITE into a second grated 12" culvert, which eventually drains to Star Lake. According to former property owner Mr. Steven Dunn, the storm drainage system was put in place in approximately 1906, during the time the Star Lake area was first developed. The age of the second grated culvert pipe, which Drainage Way A flows into, is unknown. Mr. Dunn also stated that the hydrological influence to the wetland both off -Site and on -Site was drastically increased in approximately 1998, during and after construction of a 112-home development directly to the southwest of the SITE, up -gradient, (with an elevation of roughly 415-440 feet above sea level - See FIGURE 5, below). The development directs stormwater to two places, through two large control structures from the end of the development's storm system, on the hillside above the SITE. A portion of the runoff (reportedly 50%,) drains to a large stormwater pond to the southwest of the SITE, constructed specifically for the up -gradient development, but according to Mr. Dunn, almost 50% drains to the wetland located directly south of the SITE. FIGURE 5: DRAINAGE MAP Western States Environmental, Inc. Page 13 6. Hydrology Information, cont. Mr. Dunn stated that during the period of time that he has owned and/or leased property, the hydrological influence on the area increased by 50%. He stated that he was forced to enlarge a small existing drainage ditch, (Drainage Way A) to the size it is presently, (varying from 12"-24"), in order to prevent his property from flooding, due to the extra input. See FIGURE 5, (above). He also stated that no areas of the back portion of the SITE, beside that of Wetland A, "were ever wet before the development was put in," (Interview, 6/13/08). The overall area of Wetland A was more than likely subsequently increased in the last decade, both in hydrological influence, (and in following, hydrophytic vegetation,) by the additional input from the up -gradient development. Vegetation patterns are indicative that the area has, for 30 years or more, been somewhat moist. However, WETLAND A may not have been seasonally inundated prior to the increase in hydrological influence. Some willow trees (Salix sp.) are roughly 15-20 years in age, while others appear to be more than 30-40 years in age. Understory vegetation includes perennial and annual species, and ranges from months to several years in age. Much of the immediate area surrounding the SITE drains to Star Lake. For plot locations and general plant communities, see FIGURE 6, below: Western States Environmental, Inc. Page 14 7. Existing wetland mapping The majority of the parcel to the south of the SITE is mapped by the City of Federal Way interactive GIS as a Category II wetland (URS Corporation, 2002), which is consistent with field findings at the time of the delineation. The oblong -shaped portion of the wetland shown to extend onto the SITE, however, exists more consistently with the shape shown by flagging in Figure 6. Rating calculated for Wetland A during the course of the delineation, found to total the score required to qualify as a Category III. Additionally mapped within the Federal Way GIS layer is Drainage Way B, consistent with the shape of the currently observed drainage pattern. Drainage Way A is not mapped by the City of Federal Way, but is mapped within King County iMap GIS layers. The following figure, a 1936 aerial photo (King County iMap, June 2008), was taken shortly after the house and other structures were built. It appears that the SITE was formerly a small farm, for which the area was, at some time, mostly cleared. Small to large trees and shrubs are evident along what is now Drainage Way A. Purportedly, if there was a drainage way at that time, it was directed into the same structure that it is now. Mr. Dunn stated the storm drainage structure at the northern -central border of the SITE was built in 1906. A portion of the area in front of the house (visible in photo) appears to match the current pattern of Drainage Way B. It is possible that this Drainage Way was created to drain and/or irrigate the area for agricultural purposes. FIGURE 7: AERIAL PHOTO, CIRCA 1938 Western States Environmental, Inc. Page 16 IV. CONCLUSIONS One wetland, (Wetland A,) was found to exist near the southeastern corner of the Site, and is shaped in a rough half -circle shape, measuring 65 feet, to the edge of the interior, by 91 feet (at the longest edge), for a total of approximately 5,915 square feet. The Cowardin definition of this wetland is: "Palustrine scrub/shrub and Palustrine forested - All nontidal wetlands dominated by trees, shrubs, persistent emergents, emergent mosses, or lichens, and all such tidal wetlands where ocean -derived salinities are below .5 ppt. This category also includes wetlands lacking such vegetation but with all of the following characteristics: (1) area less than 8 ha; (2) lacking an active wave -formed or bedrock boundary; (3) water depth in the deepest part of the basin less than 2 in (6.6 ft) at low water; and (4) ocean -derived salinities less than .5 ppt." The contrast with the non -wetland area outside Wetland A was determined using topography, hydrological observations, and observed plant communities. A distinction between these, contrasting with the characteristics of Wetland A, formed the basis of the boundary choice. Hydrological connection was found between Wetland A and a large Category II wetland off -Site, directly to the south of the Site. Drainage Way A provides the majority of hydrological influence to Wetland A, and originates to the wetland via culvert, underneath a water tower access road which separates the two parcels. Additional influences appear to contribute to standing water in Wetland A, in the form of sheet flow across the driveway, during heavy rain events; and hillside runoff from the steep access driveway, which rises sharply at a grade of over 15%, from the southeast corner of the Site. Both Drainage Way A and Wetland A have been found to have been almost certainly significantly influenced by increased hydrological input beginning roughly ten years ago, which is attributed to up -slope development, and in conjunction with a stormwater mitigation pond built for runoff from the development. Wetland A was rated using WA State Department of Ecology's Western Washington Wetland Rating System protocol, and received a score that assigns it a rating of Category III. The buffer for development near a Category III wetland is 25' feet for wetlands between 2,500 and 10,000 square feet in area (City of Federal Way Critical Areas Ordinance). However, the Category 11 wetland adjacent to the south of the Site is rated as a Category 11 and will require a 100 foot buffer (including the area of the water tower access driveway, along the southern border of the Site. Modifications to this buffer might be made according to City of Federal Way ordinances, provided mitigation/restoration/enharicement plans are approved. A second drainage way, (Drainage Way B,) also stems from the Category II wetland off -Site to the south, and flows from the southeastern border toward the central portion of the northern border of the SITE, and appears to be either a natural drainage way, or one constructed when the Site was developed in the early 1930s, perhaps for agricultural pursuits. Western States Environmental, Inc. Page 17 Whether man-made or natural, Drainage Way B was found to be unlikely to provide fish habitat or rearing areas, as it drains directly into a 12" graded culvert which is piped underground, through stormwater conveyance system, to Star Lake. It is foreseeable that both Drainage Way A and B will likely need to be preserved, restructured, and/or otherwise improved, for storm water mitigation capacity, especially if development on the Site is ever proposed. WSE has not been informed, as of the publication date of this report, as to what development may be proposed at this date or in the future; it is unclear for the purposes of this investigation whether or not wetland or drainage areas and functions will or will not be adversely affected by any proposed projects. TABLE 1. CITY OF FEDERAL WAY, WA WETLAND CATEGORIES AND STANDARD BUFFERS ADDITIONAL MEETS ONE OF THE SIZE RE - CATEGORY FOLLOWING CRITERIA: CRITERIA: UIREMENTS: a. Contains the presence of species or None None documented habitat recognized by the state or federal agencies as endangered, threatened or potentially extirpated plant, fish or animalspecies. b. Contains the presence of plant associations of infrequent occurrence, I irreplaceable ecological functions, or exceptional local significance including but not limited to estuarine systems, peat bogs and ferns, mature forested wetlands, groundwater exchange areas, significant habitat or unique educational Sites; or c. Have three or more wetland classes, one of which is open water. Greater than Does not exhibit II 2500 square feet in area characteristics of Category I wetlands a. Are Contiguous with water bodies or tributaries to water bodies which under normal circumstances contain or support a fish population, including streams where flow is intermittent; or b. Are greater then one acre in size in its entirety; or c. Are less than or equal to one acre in size in its entirety and have two or more wetland classes, with neither class dominated by non-native invasive s ecies. Greater than Do not exhibit 2500 square those III feet in area characteristics of Category I or II wetlands. Standard buffer widths for regulated wetlands are established as follows: Category I wetlands shall have a standard buffer width of 200 feet. Category II wetlands shall have a standard buffer width of 100 feet. Category III wetlands shall have a standard buffer width of 50 feet for wetlands that are greater than 10,000 square feet in area, and shall have a standard buffer width of 25 feet for wetlands that are between 2,500 to 10,000 s uare eet in area. NOTE: Final authority on any development applications, as well as this study, rests with local, state and federal jurisdictions as appropriate. This study may not include all information needed to make determinations as required under local, state and federal requirements. V. LIMITATIONS This study is a limited study, which was contracted to provide assessment of the possible existence of wetland(s) and/or stream segments on the Site. This study does not include civil surveying, civil survey maps, or other diagrams or figures, or any information other than what was contracted and has been provided within this report. No planned use, action, or development intention has been disclosed to WSE at the time of this report; thus, this study is not intended as a comprehensive delineation/ mitigation report for the purposes of application for development or development mitigation. Additional information, research, or assistance, can be provided, but will require additional contract. Western States Environmental, Inc. Page 19 �1 1 V. REFERENCES City of Federal Way. Interactive GIS. Critical Areas Map. January 2005. Accessed: May 2008. City of Federal Way. Interactive GIS. Critical Areas Mai). Wetlands Polygon Attribute data. January 2005. Accessed: May 2008. City of Federal Way. Shoreline Master Plan. Appendix A: Critical Areas Ordinance. DATE????? Online. Accessed: May 2008. Dunn, Steven. Personal Interview with Forrner Pro erty Owner. Delineator: Erika Wittmann. June 13, 2008. King County Department of Development and Environmental Services, Wetland Delineation Rej2ort Criteria. Web published date: 11/28/2007. Accessed: May 2008. WA State Department of Ecology. WA State Wetlands Identification and Delineation Manual. Ecology Publication #96-94. March 1997, WA State Department of Fish and Wildlife. Information Technology Services GIS. Bald Eag de Buffer Management Zone Map. Production Date: May 6, 2008. WA State Department of Fish and Wildlife. Information Technology Services GIS. Habitats and Species Map. Production Date: May 6, 2008. WA State Department of Fish and Wildlife. Information Technology Services GIS. Oyster. Clam, Geoduck and Abalone Map. Production Date: May 6, 2008. WA State Department of Fish and Wildlife. Information Technology Services GIS. Surf Smelt, Sand Lance, Rock Sole and Herring-Nlap. Production Date: May 6, 2008. WA Department of Natural Resources. Natural Heritage Features b Township/ ange/3ecti . Natural Heritage Program online. Accessed: June 17, 2008. WA Department of Transportation. Common Plant Indicator Status 2007. WSDOT online. Based on Reed Plant List and WSDOT Regional 1993 Supplement, Accessed: June 2008. US Army Corps of Engineers. Corps of Engineers Wetlands Delineation Manual. Environmental Laboratory. January 1987. United States Department of Agriculture. Natural Resources Conservation Service (MRCS). Web Soil Survey 2.0. Soils Map. Downloaded 6/12/2008. VI. APPENDICES APPENDIX A: FIELD DATA SHEETS APPENDIX B: PHOTOGRAPHIC LOG APPENDIX C: WA FISH AND WILDLIFE TES MAPS (FOLDED) APPENDIX A: FIELD DATA SHEETS DATA FORM I (Revised) Routine Wetland Determination (WA State Wetland Delineation Manual or 1987 Corps Wetland Delineation Manual ' Project/Site:IhiETLa+.1❑ t)EL1NE/�TION�-STP-EAM ItAVESTIGATION fate 4 t2 os 24H7 STAR LAKE MC> S., 1rSIaERAI, WA`i, WA Applicantiowner: GE©I" KR.EY AIAY E UNCA Scunt}: INC, State: WA SJ ,X: SEC- .33, T' SZ N, Rao E Investi>;atna-(s?: Eszt � Vv t TrMAh-tnl — ��, no Do ?vormal Circumstances exist on the site'' Cornllmrai[y ID:T Transco Il? Is the site sirgnificand) disturbed (atypical situation)" Ye` t" Tra ID: 2 Is the area a potential Problem Area? ye` rrc' I:x lanation ofatypical or problem area: FKeausa to V MovJF_C VEGETATION (For strata. indicate T tree: S shrub: li herb: V vine) Dominant Plna ant S ccieN Stratum °o cover Indicator Dominant Plant Stratum o cover Indicator R4nanr.aJj.s vepears N (s0% FACW Pk*44N'1s a "d+naccA H Z.0°ro FACW baef�lis 010,s.oraa,11-A H f D % FA C U Noru.s �a,arr FuS H Eo% FAC Festuaa stcbutata F1I 3 % NI— HYDROFHYTI€;' VEGETATION INDICATORS: 0 % of dominants OBL. FAC'WV. & FAC- _ �67 _. o Check all indicators, that apply- h explain bclo%,: Visual observation of plan! species growing in Phv:ioleruieal reproducti�r adaptatiuns areas of prolonged inundation-,aluraticn Wetland plant database Morphological adaptations Personal knowledge of regional plant communities .-- 1•echnical Literature Other (ex (explain) Hydrophytic vegetation present? yes no c,V_0o.A IN Rationale for decision: Remarks: tZG>~D CAt4ARYGr2AS3 AND GRE oIn1G t3la F�GtIP °��N Oil NjEaR vJhTEai SotcfZC�S• HYDROLOGY is it the grow-ing season.' Yes no Water'vlarks: ,r. no Scciiment laeposits: yes no on tkannaf sides Based on: soil temp (record temp I Drift lines: no Drainage Patterns: Ve. no b l 68 otherlex!Inin) Dept. of inundation. inches oxidii.ed Root (li%e roots) Local Soil 'iurvcy: rCs no �Channchs - I? in- •c� nnDepth to free water in pit: inches A(' Neutral: yes no Water -stair cd Leaves s.: no Depth to saturated soil: 4_ .5 inches Check all that apply & explain below. Usher (explain): Stream, Lake or gage data: 7crial hotoera h.: Other: Wetland hydrology present? yes (ura Rationale for decision. Remarks: t91t�Jf4AAf WAY 'A 15 AN (MPK0VED DKA)AlA(AE btrr4+, WHICH i)RAINS 7a 57",FR L,aK>; SYSTEM. MFi SOILS Map Unit Name fILDERw40G C-RAvU"y S,4&1DY LOAM, (Series & Phase) b To {$ % S LOPES LOAMY- SKSI-EY- l [SO•T[C, MCS[c TaXonoml [,wbw'01.1p) VirRA7fDIG YS7lO?Cr±rC FITS M,p p6�Khrrj.y `4� - F MEDt r,"w ra Mr-& Drainage Class . Rr-AC. -&P- kYA-r mr2r AL-E [5-34" Fp4pA JAN- MARC.N. Field ohservations cxnllirm cs No marpc c4 t� l�r'' Profile Description Mottle colors (Mt111SCII nloist) Mottic abundance size & contrast l exulrc, concretion, structure, etc. E)ravvillg ol�soll { xotilc (rriatcit ae5ur; tioll) Depth (inches) Horizon Matrit color (MMISell moist) 0 _ 0 �Aqf de -a d 6r4SS, IGAwes �rpG Yo01-5, �� � o �- ►�� I3i 7.5 v[z 3/Z 2.5YR 41Z 7.5 YK 416 way 2.% /ew sa.�c.r s�,��. �G V" ne say.d,fin r Gt. rocicsfo['� DWh, rvI w Iiv�e� " +k T. 'Rydric Soil Indicators: (check all that apply) _ HistosoI _ Histic Lpipedon Sultidic Odor Aquic Moisture Re-a,inlc Reducing Conditions Gleved or Lm-C hroTlla (= I) nlatrlx H dric sails present? •cs no Rationale for decision./Remarks: Wetland Determination (circle) _ Matrix chrome <'_ with mottles Ms, or Fe Concretions High Organic Content in Surface laver of sandy Soils organic Streaking in Sandy Soils Listed on Nat;onal/Local I l.� dric Soils list x ()tiler(et\plain in renlarks) I lydrophytic vegetation PI-esent? ves no Is the sam ling p nine ye' o Hydnic soils present'?? ve no p Wetland hvdmlc� w rt ent`? ves to within a wetland'' Rationale/Remarks. bKAI.h[Arn6 WAY A IvA5 [MpXoVt^p D"E TD 1NGRF-fiSED FdvbPo"aiCAL 1NFLL(BNCfz rR6" u.F-G[chplENi DeVE:LOP 67NT- S-fOKM WATSR- F-U.i"joFF. NOTES: O"T- OF -pLof SP�UES ' SF,Nr,Gto JAc_O $A EA GREPIS GAPr! ��`215 NSA12D PoSslei-E V'WC.KER- (GAt3Y) OFP_SITrE. -TSouTH Revised 4197 Pt -or z PG Z DATA FORM 1 (Reviae(l) Routine Wetland Determination (WA State Wetland Delineation Manual or 1987 Corps Wetland Delineation Manual) Project/Site: WEit-.AND DF-w1 -IL TIONJ/ST CAM INVrST-IaAT-toNy 2(oy7 S-rA Z L.A KE RD. S-,, F6oEKAL WA\j/ lJA Applicantlowller. GEOFFREY IAUV1aUhJG investi Lato s : &O to W ITT1" A NN Do Nomlal Circumstances exist oil the site? yew ' nu Is the site significantly disturbed (atypical situation)'' yes no Is the area a potential Problem Area" yes " I:x lanatian platy ical or rnblcm area: riGEDGtirtarl. moWED VI GE 'ATION (For strata., indicate l tree_ S shrub: 11 herb: V -vine) =PlantStratum 1i0 cover Ind-icator Oominant Planl-� xciesr-A CI•( l` f�►! Gf 4N! d f't Date: for J3/68 Counly: J<It\461 State: WA S% I ; K: s&c 33, T Xz nJ, R oq E ('0111rtTllnit) 11) Itansect ID: Plot ID: 3 Pao, Qrt.�ansis �� �} 14�-- Z5`,o JO °� FAG FAA, F A G Tr:foiikwl wor+xskjflidii �i9res{;a aepll�a*%s �c&}t1o� srcbwlaf�t �lr %GEr-A xAGiI.Hf Gi►iw{ ! r 5 % FA W HYDROPHVTIC VEGETATION INDICATORS: % of dominants OBL. FACW, & FAC _. G 2.5101° Check all indicators that apply & explain below: Stratum % cover Indicator H L� dlo r "FA C- V FACW Visual observation of planl species ,rowing in Physiolo ical reproductive adaptations areas of prolonged itlutldatiollisa[urati411n Wetland plant database Morphological adaptations Personal knowledge of regional plant conmlunitics x Technical Literature Other (es Main) _. Hydrophytic vegetation present? yes (%' RationalelordecisionfRernarks: 7HeWGH AREA ;s t,tKUL_y r'toIST- Fore. MONTHS PE;72 YEAie, HYDROPN� �lt?GP�Thr�ON V41 e ► 0 PF.%L515r. HYDROLOGY Is it the growing season" c• no Based on: soil temp (record temp 1 —bl3fc8 other(tNi lain) _ [)ept.:df inundation: NA. inches Depth to tree water in pit: Nib inches Depth to Saturated Soil NA inches Cheek all that apply & explain bek—: Stream. Lake or gage data: Aerial photographs' Other Wetland hydrology present? yes ° Rationale for decisioniRemarks Water Marks: tics nn Sediment Deposils: yes on Will line; yes no [)rainage Patterns: yes Oxidized Root (live roots) Local Soil Survey: vr9 no Channels . 12 in, ves n F.AC Neutral: yes no Water -stained Leaves yeti t Othcr(explain): AREA AND TOPOCMAP-HY APPEARS TO INDICAT1; tAREGULAA, tNkAW0A'r-10N OR SA rtt RA TI Ot, (S - I Z •s-/e) SOILS Map Unit Name AL-DF-kWbUG - CMA UeL.t.Y SANII LOAM, (Series & Phase) 6 -rc 15 '/. Si-nPl^s r LOAMY--S,W-ELEn►L, (Seek, MESrC I.01L I JI) V l r M A AI D !_ D of S T-r-L 1- m e Y r s t4DPCAAzert,Y 1A6LL-DRMN ; SLoW Ta MED• RW�lOF'�r Drainage Class pEsZGl��.P._►�? t 2��ic FK DM J AN - r"tAXC-1i4 Field observations confirm Yes cr nrl ed tv � 7 Profile Description Depth Horizon Matrix color Mottle colors Mottle abundance f exture. concretiow, _ f)r:n�ins of soil (inches) (Munsel) (Munscll size & contrast Stnlcture, etc. profile (match description) moist) moist) O Ck A1, 2.5YR 2•5/I Nonlr �ina roo}s, roe+ � NONE 4* b w�d�p�1+.I *L01 51% Z./p+�etrru, No roofs, grave 3+. R Z - f 5 131 z.5 Y1t 2-5,/1 2.5 -fq- 311 � mcd' m fir?" awed, 6[r3h4-1 h(o roa%s, Gobbles fo IJ'jga 13Z 5 Y12 3/2 5 YR -3 to 3►�rw, rnsd:xM ulna Sand, re"Ve-1, pie: ces eF CoUI d t t� 3+� ` P- 3 f Z J3 5 yP- �f / 3 .5/ �y13'/. abruZcl�r'ca, Na roe S, cobbles }e 3 m>,,, Mcd ury ¢iw o saw+-d, qr&v;-L reoas u'a� in �w�m tw�i+-alsf r .)*4- ama.li Hvdric Soil Indicators: (check all that apply) Matrix chrome "vith mottlesstosol Histic f;pipedon Mg or Fe Concretions I ligh ()runic Content In St1I"lake Layer ol'Sandy Soils Sulltdic Odor AgUIC MolstUre Regime _ _ Organic Streaking In Sand4 L�OIIs Reducing Conditions ie Listed on National/Local I ivdric soil; List Cileyed or [..ow-Chronta (=t) matrix Other (explain in remarks) Hvdric soils present:' yes pn.. Rationale for decision/Remarks: Wetland Determination (circle) Hydrophytic vegetation present'? ves n ves no Is the samplint, paint ye, o Hydric soils present? within a �%ctland? Wetland hydrolo N mescnt? ves nc Ralionale/Rem a rkc: DOTES: �o 61 t`t5 DRAC,0 0 VL�LIrS Revised 4/97 P t- or 3 Pa 2. r" DATA FORM I (Revised) Routine Wetland Determination (WA State Wetland Delineation Manual or 1987 Corps Wetland Delineation Manual Project/Site: WE-r L.AKP DEr_IntF-ATloN SmE-A►4 (NVE5TI4AT-l01`4 Date: 6113 CS 2447 5TA IZ LAKE " S., Applicantlowner: rnOFFKKY AI YCUrJa count}: KING E State: WA [mesh =atc�r{,y: 1:F-HAA W 1 TTMA t1sN ti I''{t: SEC 33, T Z2 N , R 04 E Do Normal Circurnstances exist on the site". Cornmunits II) Is the site significantly disturbed (atypical situation)? yes o Transecl II,): Is the area a potential Problem Area? yes no Plot ID: �- Eix }anatiolt of atv oral of rrssbicm area: — VEGETATION (I -or strata, indicate I tree: S -- shrub; I I herb: V ine) Dominant Plant 5 eeics Stratum "'o cover Indicator Iominant Plan 4 retcs Strau,n, "•n cx)vcr Indicator 7� 4enan�/z o sa,ry►scn¢o }--� % 0 B L �•I�pa�fnat-r i s r ad i c.a�fa � _ L- to FACU Ra � r 36 % FAC-W {�iisa t S »waUi t Ge �t T Z� Fit c C 7Wt4vu IPA oLrvcasr S V i 4°l• N L fpilo�i~ cilia{uaN i 7-14 LFACLd- HYDI20PIlYTIC' VEGETATION INDICATORS: %ofdominants 013L. FAC W, & FAC Check all indicator,, that apply & cxl)Ia„1 beloxv: Visual observation of plant species growing in Physiological;rcproductive adaptations X areas oi'prolonged inundationfsaturatian x %vetlancl pl,hnt database X Morphological adaptations Personitl knu« ledge of regional plant communities Technical Literature other let Main) Hydrophytic vegetation present? yes no Rationale for decision,'Remarks: HYDROLOGY Is it the growing season? es no Water Marks: yes no Sectimcsll Deposits: }es u, on Based on: soil temp (record temp ) Driti Lines: Ors nu )rainagc Patterns: es no 411I fib other {ex lain] S inches Oxidised Root (live roots) Local Soil Suryey- es no Dept. of inundation: !- Channel,; • 12 in rs no Water Leaves no Depth to free water in pit:© inches VAC' Neutral: yes no -stained Depth to saturated soil: O inches Check all that apply & explain below- Other (explain): DRAINAGE vfA`1 B C'QAIMS A I-AMC-C Stream_ Lake or gage data. CA-refiOrzY IL W Ert-ANO --v Aerial photographs: Other: Wetland hydrology present? yes nt' Rationale For decision./Remarks: pLoi -TAKEN VJITHI►J typAINAa6 WAY 5, p[LAIWAGE WAY APPgARS Tb 6e INtANC>A-ra> 1 0 R AhPRO 91MA-CELy 4- MoN-rH5 Pelt YEAR. — DATA FORM I (ReviserQ Routine Wetland Determination (WA State Wetland Delineation Manual or 1487 Corn-s Wetland Delineatinn MtEnual r Io }jcctrSitc: WFTt,ANb D ELINEAT1oN STMEAM 1Nyt-ST1CATl0q Date: ( /Iyf08 2-4,H7 SrAk L.AJKE RA. S•, FEpeRkL. WAY, WA Comm- K1�1C+ Applicantiowner: G£pFFREY AUYELINr, state: WA ln.waigator(s): C'-ycq W 1 tirI R: s trrMANN EC 3. T z2 rJ, R o4 E Do Normal Circtunslances etiist un the site') no ('onununrl� ID: Is the site signiflea lit IN. disturbed (atypical situation)" yes io 1 ransect !I 1 n r Plot 11): Is the area a potential Problem ,Area' `es I:x lanation of ntN Pical or r�jl=lrnt area: Vli(:I:'rA,T1ON (For strata. indicate "I tree: S shrub: I I herb: \ \ ine) Dominant Plant Species Stratum cover Indicator Dominant Plant 5 sCies Stratum ° cover Arm 114Ara T" 20`/0 SAC- or ri� ly�llii H 15 � , � O FA C (laN+c) EPiioaiu� ei1;06fum I -I 3 0 5wlix 4uul�riar..t ) S (a".d other' .SAXA, 5 Rub."sptCf^.6lis $ 3 �� FAC+ Poc, Pra.t}E,sis � i f 2-0/0 Guu•, Naas ro p l law7 VA FA C W — Ea u i s e, u-rv+ Zs, *% �ttust.luo ro- eta, H FACW �so�l�cn'tt�wt Ws, ds r H I 15% ri0M HYDROI'HYl'I(' VI,.(:I•:"I ATION Itil}IC ATORS: of dominants OBI.. F:1('1i'. & l :\(' $.0 °/,o t ("heck all indicators than apply &' explain hclow: ViSU'al observation of plant species gmwittg In Physiological rcproductie•c adaptations areas of prolonged ill undationsaturalloll x Wetland plant database Personal knowled,e ofre,ional plant corttnnintlics %lorphological adaptations UtIteI lex Iaini Technical Literature Hydrophytic vegetation present? n no Rationale for decisiortiRemarks: HYDROLOGY Is it the growing season? ves ]to Based on: soil temp (record temp ) 6 It o$ other (ex plain) Dept ofinundation: inches Depth to free water in pit: 8 inches I)epth to saturated Soil. le inches, Check all that apply &, explain helo— Stream, Lake or gage data Aerial PhLlto+rn2hs: ( )thcr. Wetland hydrology' present? ties no RatiOn'.11 for decision/Reniarks 7UPaa12.AP"Y A►fb Deh)rIA4.E PArTF- FL^1S- Indicator N (7rNE rACW— FAC FAC A \4"alcr :b1arks: \cs n Sediment Deposits: xe5 ttt 011 Drill Lincs: )cs ui Drainage I", terns: res na Oxidi�etl Root (li�c roots) l.ucal Soil Survc): �'e. no ('hannels 12 in ves no I A(" Neutral: yes nt� Later -stained Lea\•es yes nn ()thcrwxplain): PLOT- 1-1E3 W(r'HIN Kt6:T1-AN0 A, 81rE 1MHED1ArL' AP -FA SOILS Map Unit Name AI-DERWoOP agAUC u-Y. SA nrDV Lo,iM, (Series & Phase) l Tn 15% s(_oPF-& Taxonomy ( LOAMY -SKELETAL, 130TIC,MESIC, YITR NC)IC C>Y,5-rA X-MrP-S 144D68t1TrLV WA.L-DRAIrvE: 5LdW T-0 Ma-D. P-LINOFFJ Drainage Class pKo cfqt-�a _wrg reA -r fsz-- 18- 3G" F reONi JA At -MAR Field observations confirm )2es No Profile Description Depth Ilorizon (inches) Matrix color (Mansell moist) Moule colors (Mansell moist) Mottle abundance 'NXILrre. concr-etrwl>. sire & contrast structure. etc. DIa\Ning of soil # profile ; It1ialleh.itcri ticrat) �J rr� A I 2• s Y"t, =" s/t s.,� a l e atAcxJ , r do i s jl -rs° A 2 YK, 7.5 YR, or t, kiti I., Lao.n,✓" yr`°i, l5sls. 510 n+m, Varl Finn I •($"+' Fir -7.5 vX, 14/3 7.5Y9, KilI7 Hydric Soil Indicators: (check all that apply) Histosol _ Matrix chroma _ ? with numles >_ Histic Epipedon — - Mg or I-c Concretions SLllFIdic Odor I liL�h Organic C'OlItent in Su(-lacu I.a\c:r ol'Sancl) Soils Aytric Moisture Regime Oroanic Streakin, in Sandy tiuils Reducing C'onditior}s Listed on ltiatianaUl,ocal [ lydric Soils list Cileved or Lo\+-C'hromrt ( I ) matrix Other.(ex lain M reruarks) Hydric soils present? 2es no Rationale For decision/Remarks: Wetland Determination (circle) H_ydrophytic vegetation present? t 110 Hydric soils present? ve- no is the sampling point >es no Wetland hydrology renscnt? no ithin a wetland? Rationate/Remarks: WI~TI.ANO A• SSE 26rofzr Fop MEaslAtzetnFr.Ir5 AND DrS�rziPTft)Ij NOTES: 05s8iz.ttt%D P,EWIcaCs WREN] GEDAPL WAXV41N 6; Rog IN RED t>9.A&0rn1FUi (.AK.0 B ANT C.oLOr`SY NELtKrSY Ouf-or- pL_Or S9�UE5 PTERIDIUM AQUILIN Revised/97 $EIuEc.IO .1ACA,5AEp VrILohJtCA P,EC.LA B,LA N L-A ssP. t3;Zoo KlrtME PLDt Z P�, Z SOILS Map Unit Narne AL-VCFvJo0P C,ZA VG CG.Y 5ANDY LOAM, (Series & Phase) 15% 9L"Or'as LOAMY-SKEr-ErAL, 150TIC, M65IG Taxxonomy(subgroup) NJ I TF?, A W D I r, DYSTPaYL,PrT5 M4110fiP,ATEL'r vJf,"* GRAIN D; 3I-bW 1-0 M&D. RU140rr/' Drainage CIass pERal-t6p "ArER rA_SLE 19.JArO.MAR Meld observations confirm cs No Profile Description horizon Matrix color Mottle colors Mottle ahundance Texture. concretion,. I3ra,,4 ing of ":oil prol i le Depth (inches) (Mansell (Mansell sirs & contrast structure. etc. description) ntoistl Moist)(match 1 a, #a Z ►nm, vertj sandy, -Fine.so, d, Q" 12n Al 1OYR. 3/Z ?•5 `/R 4/0, few con+ras+ 1pofn, wed-, Pre r6e is IZ'/�" B I I j0 Ytt 3/Z none Vrr s R•�uGy, q rlw 4 �4 r"P,{ wad; vdr C, A e. rvo�-f, Ole f Hydric Soit Indicators: (check:' all that apply) _ Matrix chre>ma 2 �� ith mottles Histoso! Histic l_:pijxdo11 _T Mg or Fe Concretions Sulfidic Odor I Iigh Organii Conte"I 'srt tiurl'.ter L.:a`c r oi'Sandy Soils F-- Aquic Moisture Regime organic Streaking in S.utdy Soi15 Reducing Conditions j{ Listed on National/1_mol FIV01-ic Soils List Gleved or LO1v-Chroma (=I) matrix Other kex }lain in remar-ks) Hydric soiLS present'? no Rationale for decision/Remarks: MArp. IX, VAI-jA6,A&ip CHROMA MATCN USDA MRCS OFFICIAL 5011. SetttEg DeSGWPr70N Wetland Determination (circle) Hvdrophytic vegetation present? 01 no Q Hydric soils present'? vc no I, the sampling, point CS 1O Wetland h drolo v wesent? Ta ww rthin a etland? Rations le/Relnarlcs: pyOT irOGATap W1rHIN VP-41NArC WAY A- ALTHau6N DRA,NA4E $OU(ZCE �OF SITU �s A wt rla+sl7 pRAI NpC6C WAY 15 NOT. NOTES: LAaGe ANr C,5"Pdy nI6A"y p 64143 aes6'KVF- j NEARBY Revised 4/97 Pl-c T 4 P4; 2 DATA FORM I (Revise(l) Routine Wetland Determination (WA State Wetland Delineation Manual or 1987 Corlpti Wetland Delineation Manual Project/Site: 09TI-AND pgrarJe-ATIoN / gTKsAM 1NVGSTl&AT-)0rd 24147 STArt t-AKr� P-D 5., FrrVErzAL WA-Y, WA Applicant/owner: G,E0FF12eY A%AYELtNG Investi ator(s): F-V-I A WITTMAI4N 13o Normal Circumstances exist on the site? ves no Is the site significantly disturbed (atypical situation)" yes (a Is the area a potential Problem :area'? yes Explanation ofaty ical or problem area: Fefat ew-i-y Ea iD VEGETATION (For strata, indicate T tree; 5 shrub: II herb: V vine) Dominant Plant Species Stratum cover Indicator Dominant Plant Species Poo Prai-tvrsis j W/o FAG Ep�lobir cifiaf+�m panaxt4 k e- sarw.u.las N 3 a '/0 0 B I— Ra.yu l r s H 2 5'/0 FAC.bq pacltae✓Ts radii�A }'� ��°�o FA CAA Phlauwt Pra itvrs c N �J %fIG C-IYIVOfV,�41,5 A.l psis V 3 % N �- HYDROPHYTIC VEGUATION INDICATORS: %ofdominantsOl3L.FAC\ ,& F.-AC 5-7-Jo Check all indicators that apply & explain below: Date: 4-1 )Z/08 County: fC I N G State: WA Sr"I'.'K: 5eC 53, 1- 2Z N, JL 04 E C'onrrnunit•. 1 D 'I'ransect 11) 11k)l It): rj Sn'alUnl °-n cover N 3 °lo Visual observation of plant species 1_l.rowing in ph) siologicalireproducl ivr adaptations areas ofprolonacd inundation- saturation Welland plant database. Morphological adaptations Personal kilo~+ledge of regional plant c0mtrrunilies Technical Literature Other (ex Inin) Hydrophytic vegetation present". it Rationale for decision, Remarks: HYDROLOGY Is it the growing season? yes no Based on: soil temp (record temp Z l3 6$ other{" —plain) Dept. of inundation: _ inches Depth to free water in pit: 1J, 5 inches Depth to saturated soil; it inches Check all that apply & explain below. Stream, Lake or gage data: Water Marks: ycs to' un I Drift Lines: yes al Oxidized Root (lire roots) Channels < 12 in. es no Aerial hotogra hs: Other: Wetland hydrology present? yes Rationale for decision: Remarks: FA(' Neutral. yes (no other (explain): Indicator 'FAGW - 91 Sediment Deposits: yes ttd Drainage Patterns: yes Loll Lncal Soil Survev: e no Water -stained l caves yes r SOILS Map Unit Namc At-Pr-K0000 Cr.AVEu-,4 SANDY r,-oAM (Series & Phase) tp TD 15% SL"oPSS L0A,M r-s4C6L.E'rAL., ISOTIC, M�slc, Taxonomy (sub-VOIL&P-rs T_ Profile Deseriiption DepET4—on oriz( inc 3 d,4 a3� Al g-m" AZ 1Z" JVi. i3! tA0D0:r-LAT& U{ V:t t..L- DR61N U 1�raina`c Class p�-xcHEp---�r�.Q_�'a��� l8'3,&" FK0►r,.S-h-N" Mwrzu, Field observations confirm (Yes) No mapped t% pe? Matrix color Mottle colors I Mottle abundance I "feature, concretions. (MMISCll (Mansell sire & contrast structure. ctc. nwist) moist) duff, 9><ass IDYK 3r/Z (0 Y R 4 15ri+w,, reefs, vwj Su, p io [D m soya 5I.1 p*I 4s ar 1j 641ics S � i F { ►Yw i 3 + to,lp, 4/1 toYtz 4l1r 15•/0, 35�*, rw,-.�{s. vu say iGO,►e Se m.,U,7 �Gb IDYQ 5/�- Hydric Soil Indicators: (check all that apply) H istosol Flistic t:pipedon Sulfidic Odor Ayuic Moisture Regime _ Reducing Conditions 7C Gle`•ed or Imw-Chroma (-1) matrix Hydric soils present? es no Rationale for decision/Remarks Drawing ofsoil profile (match dcscri 3ticm ) MaU-1x chroma <_ 2 with mottles -^ N-1g or) c Concretion, v ~ l ligh Organic C.,7rtte111 i11 Surfacc.i •aycr- of Sandy Soils _. Organic Streaking, in Sandy Soils �C l.isted on National/Local I Ivdric Soils Ust Other(explain in remarks) Wetland Determination (circle:) Hydrophylic vegletatio n prescnt? :c.s no l-1}'dric soils present`? es no is the sampi fig point Wetland hydro OTN resent'' 1VIt11111 a 1N'L'tlalld? Rxtionaie/Remarks: NEXT lb 'D9-AIRAc,5 vJAY 3, IN 1= 20wv t_AwN- NOTES: yes ntl Revised 4/97 PLOT 5 PG 2 This Study is not to be reproduced, in whole or in part, for any use, at any time, by anyone other than Mr. Charles Kim, Mr. Geoffrey Auyeong or Western States Environmental. July 2008 APPENDIX B: PHOTOGRAPHIC LOG PHOTO 1: Facing NW from SE area of property. Drainage Way B (foreground) drains to the NW and curves to the N where it intersects with Star Lake storm drainage system. Drainage Way B flagged at approximately 40-foot intervals. Approximate location of Plot 2 indicated with pink arrow (background). PHOTO 2: Facing N from northern -central border of SITE. Drainage Way A flows into this 12" culvert and eventually into Star Lake storm drainage system. ittry 44- f PHOTOS 5 and 6: Drainage Way B, facing E from central -NE portion of SITE. Culvert runs under driveway (background), from central (forested) area. Drainage Way C originates from large Category II wetland to the SE, and flows through (second) utility easement driveway from the east. Drainage Way B flows to the NW, and curves to the W, eventually draining to 12" culvert, (see below) which (coupling with Drainage Way A via storm pipe,) drains to Star Lake storm system. MIA '� �,s}• �-�-. WTI �; � �� ,j `•�, ��.�^ ,;era °� ��`� .n ` _ .A 2�� T S .F.. .elf � L: � • _ `• 1 R .s ,..r_, • ` �� . • �- � - :..,ram;, r. yt`;. .� "'.`,'+1 tit -I•.. �1i',��w � � � .tia�•.. �:'%' :�w.... � � .:�•. __