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SWP272710(12)
021'09/1990 11: 20 206-7 20-5600 KATO & 14"RREN INC. P"GE 01 Post-its Fax Note 7671 Date Z"16179 pages Z D'L z%P To From Co./Dept. Co. Phone# Phone# Fax# Fax# i1'1L' i*10 x TO: Tom Luster DATE: February 9, 1998 ? 0 OF. Department of Ecology a FROM: Richard Warren, P.E. SUBJECT: City of Renton 1XI Oakesdale Avenue Project O DOE Water Quality Certification#97-4-01329 - � Q We have reNiewed the conditions of the above certification and find that all conditions are 4 acceptable and can be accomplished except ara a h 3 a) on page 4. ]� a / IG fo1P�� .1 / ,", fk, Cj(�t,A F'r4 This requirement is to retain the 10-year storm event on site. This was not what we discussed nor a what the design is intended to do. What we said was that we did not anticipate any treated stormwater flows reaching Springbrook Creek during a ten-year storm event, as this water would t� be held in the several wetlands between the project and the creek. We need the treated stormwater flow to maintain the hydrology of these wetlands. 'l We request, on behalf of the City of Renton, that paragraph 3)a) beAmodified to read as follows:" 3, a) All discharges from a project'S impervious surfaces shall be routed through wet vaults, bioswales, or other ds-shall -be constructed, operated; n mam so as to-treat Fe#a+F+flows of up to t�he 10-ypar storm evevA-.,Y-There shall be no surface or point source discharges from the s at z the south end of the project into Springbrook Creek, fnitigatiGR wetlands, or existing wetlands during flows of less than the 10-year storm events. The discharge from the wet vault at the north end of the project may dischargendirectly to the Springbrook Creek o C'lisr, duI r discharge channel. VIA y-i Time is critical with this project as all other permits and approvals are in hand and a contract is �. about to be awarded for the work. Please call or fax your comments so we can arrive at some acceptable wording for this one requirement. / d� G�c. a s Gt �e.�,r c�,�.1,�,nr 4S �c►esr,ar,.,`�t. Tl�,.� is w� �� �.fe�Jra�� Cc: City of Renton 7 G Sc v� Jim Green - USCOfi 9 D Y 2 TbTAt~ 2 u U o rr F 3 OD U n � A DF Qai�Ft�iL Kato&Warrai l no �z SA f t t2-/J 1 Q Feuu. Z r� _3C C.F Cr aoT'F« V a rL Y In Ib fiA L A 2 EA Here are some notes that could be used in verbal discussions with WDOE to convince them to delete paragraph 3a of the 401 certification. OAKESDALE COMPLIANCE WITH CITY DETENTION REQUIREMENTS South portion The existing and mitigation wetland areas are very large (approx. 22%) with respect to the existing tributary area: total approx. subbasin area=24+15(Boeing)+7 (Oakesdale)=46 acres total approx. existing/mitigation wetland area= 10-acres(excl. south of petroleum lines) The KCSWDM allows use of wetlands for peak rate runoff control provided the volume does not increase the 100-year level in the wetland more than 0.1 feet. This project is the last development expected to take place in the subbasin that will drain to the wetlands. The small tributary area west of the project that currently drains to the wetlands will be diverted north in accordance with the Boeing Longacres Office Park drainage plan. Based on approx. 10-acres of wetland downstream of the project, the total 10-year storm event volume from the project would result in a depth of less than 0.05 of a foot over the wetland. If considering only the increase in volume from existing conditions, then the depth would be even less. If considering the increase in volume from existing conditions on a 15-minute or other time step increment, the depth of water that may be ponded over the wetland from the project would be insignificant. Other notes if needed: According to watershed models, Springbrook Creek flows do not overflow the shallow berm along the creek into the wetland until about a 25-year event. While there would be very little detention for events of 25-year and larger because the wetland would be inundated by the creek, I do not feel detention is warranted for the following reasons: • Current standard requires only detention to 10-year event unless downstream conditions warrant more stringent measures. • The project is in the lower portion of the watershed and detention may make the discharge from the project more coincident with the peak of the main stem • The more frequent events are of primary concern for erosive work on the downstream system and we do not anticipate any flows from the lower frequency events to reach Springbrook Creek from the south portion of the Oakesdale project • Boeing plans to direct drainage from the Longacres Office Park that currently outfalls to the wetland north to an outfall near SW 16th Street, freeing up capacity in the creek • Providing detention to 100-year levels will mean that the water quality facility size would need to be reduced and that the connectivity of the water quality facilities and mitigation wetlands would be no longer appear seemless. • The City plans to widen the creek in the near future. North portion The KCSWDM allows direct discharge to a receiving water. Since the creek has been widened downstream of SW 16th Street to the BRPS, no detention is required. However, water quality treatment must comply with Special Requirement #5. The wet vault proposed satisfies Special Requirement#5. .�, wl 6, 9 2.1q lq$ A)4 66,c- c-�,� AIW 7� ldcd 4-o eoz,4,4ra,4- o�, t r`y�-�� ��,.d ��i��• �'o�Q.s Yh r��(���� �. �- �-��re-mad 5 �-s r Lu.h l -y,, S� 1S !o'v Now fb"4 f-0 (,V � pv lAd wit -:�o r e4oc say.-�t�. /»`ems• ,�� l� S,e�l _ , tom,,.. �Y dAreA4 even ki- gig, far 1� 9A,_ Notes for presentation to the Corps on the Oakesdale Project's compliance with detention requirements CITY Core Requirement#1 -Discharge at the Natural Location Core Requirement#2 - Off-site Analysis Core Requirement#3-Runoff Control Core Requirement#4- Conveyance System Core Requirement#5 - Erosion/Sedimentation Control Plan Core Requirement#6 and#7-Amended by Renton Special Requirement#1 -Critical Drainage Areas Special Requirement#2 -Compliance with an Existing Master Drainage Plan Special Requirement#3 -Conditions Requiring Master Drainage Plan Special Requirement#4-Adopted Basin and Community Plans Special Requirement#5 - Special Water Quality Controls Special Requirement#6-Coalescing Plate Oil/Water Separators Special Requirement#7-Closed Depressions Special Requirement #8 - Use of Lakes, Wetlands or Closed Depressions for Peak Rate Runoff Quantity Control Special Requirement#9-Delineation of the 100-Year Floodplain Special Requirement#10-Flood Protection Facilities for Type 1 and Type 2 Streams Special Requirement#11 -Geotechnical Analysis and Report Special Requirement#12 - Soils Analysis and Report South portion existing and mitigation wetland area very large with respect to the existing tributary area total approx. subbasin area= total approx. existing/mitigation wetland area= 10-acres KCSWDM allows use of wetlands for peak rate runoff control provided the volume does not increase the 100-year level in the wetland more than 0.1 feet. This project is the last development expected to take place in the subbasin that will drain to the wetlands. The small tributary area west of the project that currently drains to the wetlands will be diverted north in accordance with the Boeing Longacres Office Park drainage plan. Based on approx. 10-acres of wetland downstream of the project, the total 10-year storm event volume from the project would result in a depth of less than 0.05 of a foot over the wetland. If considering only the increase in volume from existing conditions, then the depth would be even less. If considering the increase in volume from existing conditions on a 15-minute or other time step increment, the depth of water that may be ponded over the wetland from the project would be insignificant. Other notes if needed: According to watershed models, Springbrook Creek flows do not overflow the shallow berm along the creek into the wetland until about a 25-year event. While there would be very little detention for events of 25-year and larger because the wetland would be inundated by the creek, I do not feel detention is warranted for the following reasons: 98-ooi.DOC Current standard requires only detention to 10-year event unless downstream conditions warrant more strigent measures. The project is in the lower portion of the watershed and detention may make the discharge from the project more coincident with the peak of the main stem The more frequent events are of primary concern for erosive work on the downstream system Boeing plans to direct drainage from the Longacres Office Park that currently outfalls to the wetland north to an outfall near SW 16th Street Providing detention to 100-year levels will mean that the water quality facility size would need to be reduced and that the connectivity of the water quality facilities and mitigation wetlands would be no longer appear seemless. The City plans to widen the creek in the near future. North portion The KCSWDM allows direct discharge to a receiving water. Since the creek has been widened downstream of SW 16th Street to the BRPS, no detention is required. However, water quality treatment must comply with Special Requirement#5. WDOE Minimum Requirement#1: Erosion and sediment control Minimum Requirement 42: Preservation of Natural Drainage Systems Minimum Requirement 43: Source Control of Pollution Minimum Requirement#4: Runoff Treatment BMPs Minimum Requirement#5: Streambank Erosion Control Minimum Requirement#6: Wetlands Minimum Requirement#7: Water Quality Sensitive Areas Minimum Requirement#8: Off-site Analysis Mitigation Minimum Requirement#9: Basin Planning Minimum Requirement#10: Operation and Maintenance Minimum Requirement#11. Financial Liability 98-00I.D00 w OAKESDALE AVENUE S.W. COMMENTS TO COE LETTER OF 2-3-98 DRAFT Comment 1. Monitoring periods will be extended to include years 7 and 10. Function and Value Assessment has been conducted according to the Reppert Method, and forwarded to the Corps of Engineers (copy attached). Final mitigation design drawings were submitted to the Corps of Engineers. These include planting scheme, current and future wetland boundaries, grading, and profile plans(attached). Because of the length of time involved in the Oakesdale planning process the following outline provides a useful overview of the wetland delineation process and the mitigation design process. All documents referred to have been provided to the Corps of Engineers during the 404 permit process, and are available for the planned meeting. • Original wetland delineation was completed in March 1996. • Wetland delineation reviewed and updated in the field in April 1997, previously unconnected wetland lines were connected, and wetland lines were reflagged in anticipation of Corps site verification. All field data confirms validity of previous wetland delineation. This information was sent to the Corps by letter dated April 14, 1997, with a requested for confirmation of the flagged boundaries. • Corps confirmation site visit was conducted on June 12, 1997, and agreed to the flagged wetland boundary. Comment 2 Control of reed canarygrass will be part of the specifications of the landscape contract, which also guarantees 100% survival of planted material during the first year. Excavated topsoil, which contains abundant seed source, will be removed from the site. After this one year of reed canarygrass suppression will allow planted species to become established and eventually shade the reed canarygrass. Comment 3 Side slopes for the wetland are 10:1 at most. This gradual slope allows for non-erosive sheetflow into the wetland from the water treatment facility. The created wetland is designed to meet the elevation of the adjacent existing wetland, which has been surveyed and delineated, and found to have strong indicators of wetland vegetation, hydrology, and soils. Regarding cubic yards of excavation, the final total of excavation as included in construction bid documents for Phase I mitigation site is 20,500 c.y.. The contractor is responsible for disposal of any unstable material at approved disposal sites. Regarding Section C-C, a revised graphic was included in the Public Notice package develped for revised Phase I application (see attached graphic). Regarding site hydrology, see attached information from Scott Woodbury. Regarding road runoff as a source of hydrology for the mitigation site, treated runoff will be a source of hydrology. Comment 4 Renton will comply with this request. Comment 5 The City will provide mitigation monitoring reports directly to the Seattle District Corps. Comment 6 Topsoil excavated from the site will include an abundant seed source of reed canarygrass. This material will be removed from the site. In addition, the landscape contract will include specifications for control of reed canarygrass for the first year. Renton maintenance crews will use mechanical means(landscaping weed-eaters)to suppress reed canarygrass through the two year period. The designed plantings would be well established by this time and begin to shade the reed canarygrass. Regarding potential extension of maintenance programs beyond two years, the City will continue the maintenance program for up to 3 years if determined by the Corps that such is required at the end of the 2 year period. We believe this is consistent with Corps approval for Emerald Downs. Comment 7 Renton will comply with this request. Comment S Renton acknowledges that any perceived wetland mitigation credit will only be applied at the Corps discretion on future projects on a case by case basis. The designed mitigation ratios follow Renton's wetland regulations, and respond to a request for increased mitigation by the U.S.E.P.A. &U.S.F.W.S. Comment 9 Impacted Wetlands Shading Springbrook Creek Emergent Wetland 0.04 acres Fill Boeing Emergent Wetlands 0.24 Fill Longacres Practice Track Emergent Wetland 0.03 Total Impact 0.31 Acres of Created and Enhanced Wetland by Habitat Type Emergent Scrub-Shrub/Forested Created 1.0 1.05 Enhanced 0.6 0.71 Comment 10 Side slopes of the created wetland are at most 10:1. This allows for a smooth sheet-flow of water from the water treatment facility to the wetland. The final design includes grading, the existing and created wetland boundaries, the planting scheme, and a plant list(attached). Comment 11 The planting design includes shading of direct light intolerant species by sun loving plant species. This allows for planting to be completed in one phase, which eliminates the need to disturb established plantings by having landscape crews enter the site a second time. ,. or 13A( QvIt C/a,,'„ ped AF H 7(-o32.70bSo I Sy izo TOTAL UPLAND AREA, IN\ACR . HE TOTAL AREA E ROADWAY TAKE, IS 5.11 0 TH ROADWAY TAK IS 1.37 ACRES N , TOTAL AREA OF PARCELS EXISTING WETLANDS ON THE J SHOWN IS 7.89 ACRES PARCELS TOTAL 2.78 ACRES A a f-2M ao c iSmi i R. R. O GD92-0009 4- AFTER RECORDING RETURN TO: W CITY OF RENTON a 200 Mill Avenue South o 0 Renton, Washington 98055 s Attn: Lynn Guttman x z QUIT CLAIM DEED m cn J THE GRANTOR, BURLINGTON NORTHERN RAILROAD PROPERTIES, INC. , a Delaware N a corporation, whose address is 1011 Western Avenue, Suite 700, Seattle, Washington 98014 for and in consideration of TEN DOLLARS ($10.00) and other valuable consideration conveys and quitclaims, without any covenants of warranty whatsoever and without recourse to the Grantor, its successors and assigns, to CITY OF RENTON, a Washington municipal corporation, Grantee, all its right, title and interest, if any, in and to that certain parcel of land situated in the County of King, State of Washington, more particularly described on Exhibit o "A" attached hereto and made a part hereof, together with all after acquired title of the Grantors thereon. SUBJECT, however, to all existing interests, including but not limited to all reservations, rights-of-way and easements of record or otherwise. May 13, 1992 Ln CD CV s BURLINGTON THERN RAI AD P ERTIES, t *� ' � INC. are c p on � ,a2 By: Assi nt Vice esident • ' HEAL-1 Attest: Assistan S cretary FIi.ED IO12 RECORDnr, TRANSAMERICA TITLE ` CO, 320 108th Ave. NE P O. BOX 1493 Bellevue, WA 980W E12468iG 05/14/1992 ' .00 200000-00 STATE OF WASHINGTON ) ) ss: County of King ) On this 13th day of May, 1992, before me, the undersigned, a Notary Public in and for the State of Washington, duly commissioned and sworn, personally appeared Larry Leopold and Dennis L. Schilling to me known to be the Assistant Vice President and Assistant Secretary, respectively, of BURLINGTON NORTHERN RAILROAD PROPERTIES, INC. , a Delaware corporation the corporation that executed the foregoing instrument, and acknowledged the said instrument to be the free and voluntary act and deed of said corporation, for the uses and purposes therein mentioned, and on oath stated that they are authorized the execute the said instrument and that the seal affixed is the corporate seal of said corporation. GIVEN under my hand and official seal the day and year last above written. P ENLAKFq��� 'Notary Public fo W ington c�• oTAR :n Residing at X ;a _�_ r N, Commission expires: l �" '•" PUBLIC i i Ln C7 N (7T EXHIBIT A Legal Description of Property LEGAL DESCRIPTION: PARCEL A (SEQ NO. 120 f l) : LOTS 1, 2, 7 AND 8 IN BLACK 6 OF BURLINGTON NORTHERN INDUSTRIAL PARR RENTON II, AS pER PLAT RECORDS OF RECORDEDING NIN VOLUME ill OF PLATS, PAGES 42 THROUGH , TOGETHER WITH THAT PORTION OF THE FORMER 20 FOOT RAILROAD RIGHT-OF-WAY, AS DELINEATED ON SAID PLAT ADJOINING SAID LOTS, AS RELINQUISHED UNDER RECORDING NO. 8909110687; SITUATE IN THE CITY OF RENTON, COUNTY OF RING, STATE OF WASHINGTON. PARCEL B (SEQ NO. 120 14 +-2e : THAT PORTION OF LOTS 1 AND 6 IN BLOCK 7 OF PLAT OF BURLINGTON NORTHER INDUSTRIAL PARK �OUGHI44,AS PER PLAT RECORDS OF RING COUNTY,RDED IN VLYiIJNNGG NORTH 111 OFTH PLATS, PAGES 42 FOLLOWING DESCRIBED LINE: IES NORTH BEGINNING AT A POINT 0N THE EAST LINE OF 34 SECONDS EAST 172.52D LOT 1 FEET FROMICH THELSOUTHEAST 01 DEGREES 47 MINUTES CORNER THEREOF; THENCE NORTH 88 DEGREES 29 MINUTES 29 SECONDS WEST PARALLEL TO THE In SOUTH LINE OF SAID LOT 1, A DISTANCE OF 1204.25 FEET TO THE EAST LINE N OF OAKESDALE AVENUE SOUTHWEST AND THE TERMINUS OF SAID DESCRIBED LINE TOGETHER WITH THAT PORTION OF THE WEST 1/2 OF THE FORMER 20 FOOT RAILROAD OFTHEAEA1/2 OF SAID FORMERY ADJOINING SAID BRIGHT-OF WAYED PORTION FADJOINI LOT 6 NGD THAT PORTION SAID PORTION OF LOT 1, AS RELINQUISHED UNDER RECORDING NO. 8909110687 EXCEPT THAT PORTION OF SAID ��� CONVEYED � ���� N0�83060 OF 9 RENTON1 FOR STREET PURPOSES BY D AND AS CORRECTED BY RECORDING NO. 8308050568; SITUATE IN THE CITY OF RENTON, COUNTY OF RING, STATE OF WASHINGTON. (SEE NOTE 3) pAgCEL C (SEQ NO. 120 13) : LOT 7 IN BLACK 7 OF BURLINGTON NORTHERN INDIISTRZAL PARK RENTON II, A: PER PLAT RECORDED IN VOLUME 111 OF PLATS, PAGES 42 THROUGH 44, RECORI OF RING COUNTY; Exhibit A Page 1 of, 7 EXCEPT THAT PORTION OF SAID LOT 7 CONVEYED TO THE CITY OF RENTON FOP ROAD PURPOSES BY DEED RECORDED UNDER RECORDING NO. 8306090701, AND I CORRECTED BY RECORDING NO. 8305080568; TOGETHER WITH THE WEST 1/2 OF THE FORMER 20 FOOT RAILROAD RIGHT-OF-k ADJOINING ON THE EAST, AS RELINQUISHED UNDER RECORDING NO. 890911068 SITUATE IN THE CITY OF RENTON, COUNTY OF KING, STATE OF WASHINGTON. Ln c-D C�1 Exhibit A - Page 2 of 7 PARCEL lA (SEQ NO. 968 113A) : THAT PORTION OF THE HENRY A. HEADER DONATION LAND CLAIM NO. 46 LYING EAST OF THE EAST LINE OF GOB LOT 10 EXTENDED NORTH AND LYING SOUTHERLY OF THE SOUTH BOUNDARY OF THE BOW LAKE PIPELINE AS CONVEYED TO THE CITY OF SEATTLE BY DEED RECORDED UNDER RECORDING NO. 4131067; TOGETHER WITH THAT PORTION OF GOVERNMENT LOT 9 LYING SOUTHERLY OF SAID BOW LAKE PIPELINE; ALL IN SECTION 25, TOWNSHIP 23 NORTH, RANGE 4 EAST W.M. ; EXCEPT THE EAST 20 FEET THEREOF; AND EXCEPT THAT PORTION THEREOF LYING SOUTH AND EAST OF THE FOLLOWING DESCRIBED LINE: BEGINNING AT THE NORTHEAST CORNER OF SAID SECTION 25; THENCE SOUTH 00 DEGREES 49 MINUTES 10 SECONDS WEST, ALONG THE EAST LINE OF SAID SECTION 25, A DISTANCE OF 180.01 FEET TO AN INTERSECTION WITH A LINE PARALLEL TO AND 180 FEET SOUTHERLY OF, AS MEASURED AT RIGHT ANGLES TO, THE NORTH LINE OF SAID SECTION 25; THENCE NORTH 87 DEGREES 12 MINUTES 59 SECONDS WEST, PARALLEL WITH SAID NORTH .LINE, 20.01 FEET TO AN INTERSECTION WITH A LINE PARALLEL TO AND 20.00 FEET WESTERLY OF, AS MEASURED AT RIGHT ANGLES TO, THE EAST LINE OF SAID SECTION 25 AND THE TRUE POINT OF BEGINNING OF SAID LINE; THENCE NORTH 87 DEGREES 12 MINUTES 59 SECONDS WEST, PARALLEL WITH AND 180.00 FEET SOUTHERLY OF THE NORTH LINE OF SAID SECTION, A DISTANCE OF 10026.07 FEET; THENCE SOUTH 01 DEGREES O1 MINUTES .19 SECONDS WEST 1,095.58• FEET; - THENCE CONTINUING SOUTH 01 DEGREES 01 MINUTES 49 SECONDS WEST, ON A LINE PARALLEL TO AND 300 FEET EAST OF THE WEST LINE OF GOVERNMENT LOT 9,TO THE SOUTH LINE OF SAID GOVERNMENT LOT 9 AND THE TERMINUS OF SAID CD N LINE; 0. •- .AND EXCEPT THAT PORTION OF SAID GOVERNMENT LOT 9 LYING WITHIN THE FOLLOWING: . BEGINNING AT THE NORTHEAST CORNER OF SAID GOVERNMENT LOT 9; THENCE NORTH 87 DEGREES 21 MINUTES 38 SECONDS WEST, ALONG THE NORTH LINE THEREOF, A DISTANCE OF. 20.01 FEET TO THE WEST LINE OF THE BAST 20 • FEET OF SAID GOVERNMENT LOT 9; -THENCE SOUTH 00 DEGREES 49• MINUTES 41 SECONDS WEST, ALONG SAID WEST LINE, A DISTANCE OF 1,254.20 FEET TO THE NORTH LINE OF A TRACT OF LAND CONVEYED TO THE CITY OF RENTON BY .DEED RECORDED UNDER RING COUNTY - RECORDING NO. 7603250650; Exhibit A - Page 3 of 7 THENCE, ALONG THE NORTH LINE OF SAID TRACT OF LAND, NORTH 88 DEGREES 24 MINUTES 17 SECONDS WEST A DISTANCE OF l 022.32 FEET TO A LINE PARALLEL WITH AND 300 FEET EASTERLY OF THE WEST LINE OF SAID GOVERNMENT LOT 9 AND THE TRUE POINT OF BEGINNING; THENCE ALONG SAID PARALLEL LINE NORTH 01 DEGREES 01 MINUTES 19 SECONDS EAST A DISTANCE OF 45.00 FEET; THENCE NORTH 88 DEGREES 24 MINUTES 17 SECONDS WEST A DISTANCE OF 300.01 FEET TO THE WEST LINE OF SAID GOVERNMENT LOT 9; THENCE ALONG THE WEST LINE OF SAID GOVERNMENT LOT 9 AND ALONG THE WEST LINE OF THE SOUTHEAST 1/4 OF THE NORTHEAST 1/4 OF SAID SECTION 25 SOUTH 01 DEGREES 07 MINUTES 49 SECONDS WEST A DISTANCE OF 90.00 FEET; THENCE SOUTH 88 DEGREES 24 MINUTES 17 SECONDS EAST A DISTANCE OF 300.01 FEET TO A LINE PARALLEL WITH AND 300 FEET EASTERLY OF THE WEST LINE OF THE SOUTHEAST 1/4 OF THE NORTHEAST 1/4 OF SAID SECTION 25; THENCE ALONG SAID PARALLEL LINE NORTH 01 DEGREES 07 MINUTES 49 SECONDS EAST A DISTANCE OF 45.00 FEET TO THE TRUE POINT OF BEGINNING OF THIS EXCEPTION; SITUATE IN THE CITY OF RENTON# -COUNTY OF RING, STATE OF WASHINGTON. PARCEL 1B (SEQ NO. 968 113B) : THE SOUTHEAST 1/4 OF THE NORTHEAST 1/4 OF SECTION 25, TOWNSHIP 23 NORTH, RANGE .4 EAST W.K. ; EXCEPT THE -EAST 20 FEET THEREOF; �7 AND EXCEPT ANY PORTION THEREOF LYING WITHIN THE PLAT OF BURLING-TON NORTHERN INDUSTRIAL PARK RENTON II, AS PER PLAT RECORDED IN VOLUME 111 CDOF PLATS, PAGES 42 THROUGH 441 RECORDS OF RING COUNTY;' ON` AND EXCEPT THAT PORTION LYING EASTERLY OF THE FOLLOWING DESCRIBED LINE: BEGINNING AT A POINT ON THE NORTH LINE OF SAID SOUTHEAST 1/4 OF THE NORTHEAST 1/4 WHICH IS 300 FEET EAST OF THE NORTHWEST CORNER; THENCE SOUTH 01 DEGREES 01 MINUTES 49 SECONDS WEST, ON A LINE PARALLEL TO AND 300 FEET EAST OF THE WEST LINE OF SAID SOUTHEAST 1/4 OF THE NORTHEAST 1/4, TO THE NORTH LINE OF LOT 7 IN BLOCK 7 OF BURLINGTON NORTHERN INDUSTRIAL PARR RENTON II, AS PER PLAT RECORDED IN VOLUME Ill, PAGES 42 THROUGH 44, RECORDS OF RING COUNTY, AND THE TMUCMUS OF SAID LINE; AND EXCEPT ANY PORTION THEREOF LYING WITHIN THE FOLLOWING: BEGINNING AT THE NORTHEAST CORNER OF SAID GOVERNMENT LOT 9; Exhibit A - Page 4 of 7 THENCE NORTH 87 DEGREES 21 MINUTES 38 SECONDS WEST, ALONG THE NORTH LINE THEREOF, A DISTANCE OF 20.01 FEET TO THE WEST LINE OF THE EAST 2( FEET OF SAID GOVERNMENT LOT 9; THENCE SOUTH 00 DEGREES 49 MINUTES 41 SECONDS WEST, ALONG SAID .WEST LINE, A DISTANCE OF 1,254.20 FEET TO THE NORTH LINE OF A TRACT OF LANL CONVEYED TO THE CITY OF RENTON BY DEED RECORDED UNDER KING COUNTY RECORDING NO. 7603250650; THENCE ALONG THE NORTH LINE OF SAID TRACT OF LAND NORTH 88 DEGREES 24 MINUTES 17 SECONDS WEST A DISTANCE OF 11022.32 FEET TO A LINE PARALLEI WITH AND 300 FEET EASTERLY OF THE WEST LINE OF SAID GOVERNMENT LOT 9 AND THE TRUE POINT OF BEGINNING; THENCE ALONG SAID PARALLEL LINE NORTH 01 DEGREES 01 MINUTES 19 SECOND: EAST A DISTANCE OF 45.00 FEET; THENCE NORTH 88 DEGREES 24 MINUTES 17 SECONDS WEST A DISTANCE OF 300.01 FEET TO THE WEST LINE OF SAID GOVERNMENT LOT 9; THENCE ALONG THE WEST LINE OF SAID GOVERNMENT LOT 9 AND ALONG THE WEST LINE OF THE SOUTHEAST 1/4 OF THE NORTHEAST 1/4 OF SAID SECTION25 SOUTH 01 DEGREES 07 MINUTES 49 SECONDS WEST A DISTANCE OF 90.00 FEET; THENCE SOUTH 88 DEGREES 24 MINUTES 17 SECONDS EAST A DISTANCE OF 300.01 FEET TO A LINE PARALLEL. WITH AND 300 FEET EASTERLY OF THE WEST LINE OF THE SOUTHEAST 1/4 OF THE NORTHEAST 1/4 OF SAID SECTION 25; THENCE ALONG SAID PARALLEL LINE NORTH 01 DEGREES 07 MINUTES 49 SECOND-c EAST A DISTANCE OF '45.00 FEET TO THE TRUE POINT OF BEGINNING; SITUATE .IN THE CITY OF RENTON, COUNTY OF KING, STATE OF WASHINGTON. PARCEL 1C (SEQ NO. 968 113C) : ALL THOSE PORTIONS OF GOVERNMENT LOT 11, OF THE SOUTHWEST 1/4 OF THE O NORTHEAST 1/4 AND OF THE SOUTHEAST 1/4 OF THE NORTHWEST 1/4 OF SECTIOr N 25, TOWNSHIP 23 NORTH, RANGE 4 EAST W.K. , DESCRIBED AS FOLLOWS: � BEGINNING AT A POINT ON THE EAST LINE OF GOVERNMENT LOT 10 IN SAID SECTION AT A POINT 255.38 FEET SOUTHERLY, AS MEASURED ALONG SAID EAST LINE, FROM THE SOUTH LINE OF HENRY MEADER DONATION LAND CLAIM N0. 46; THENCE WESTERLY ON A STRAIGHT LINE TO A POINT ON THE EASTERLY LINE OF THE NORTHERN PACIFIC RAILWAY COMPANY RIGHT-OF-WAY AT A POINT 289.12 FEET SOUTHERLY, AS MEASURED ALONG SAID EASTERLY LINE, •FROM SAID SOUTH LINE OF THE DONATION LAND CLAM AND THE TRUE POINT OF BEGINNING; THENCE SOUTHEASTERLY TO A POINT ON A LINE PARALLEL WITH AND 60 FEET EAST OF SAID EASTERLY LIKE -OF THE NORTHERLY PACIFIC RAILWAY COMPANY RIGHT-OF-WAY AT A POINT 1100 FEET NORTH OF THE EAST-WEST CENTERLINE OI SAID SECTION; THENCE SOUTH, ALONG SAID PARALLEL LINE, TO A POINT ON THE SOUTH LINE OF A TRACT CONVEYED TO BROADACRES, INC. BY DEED RECORDED UNDER RECORDING NO. 7504010373, SAID_ POINT .BEING 545.E FEET NORTH OF SAID EAST-WEST CENTERLINE; CO1a -000� Exhibit A - Page 5 of 7 THENCE EAST, ALONG SAID SOUTH LINE TO THE EAST LINE OF THE SOUTHWEST 1/4 OF THE NORTHEAST 1/4 OF SAID SECTION AT A POINT 545. 6 FEET NORTH OF SAID EAST-WEST CENTERLINE; THENCE SOUTH, ALONG SAID EAST LINE, TO THE NORTHWEST CORNER OF LONGACRES PARKWAY AS DELINEATED ON THE FACE OF BURLINGTON NORTHERN INDUSTRIAL PARR RENTON II, AS PER PLAT RECORDED IN VOLUME 111 OF PLATS, PAGES 42 THROUGH 44, RECORDS OF RING COUNTY; 624.00 FEET MORE THENCE SOUTH 87 DEGREES 57 MINUTES 39 SECONDS WEST 1, , OR LESS, TO THE INTERSECTION OF THE NORTHERLY EXTENSION OF THE EASTERLY LINE OF THE PROPOSED P-1 CHANNEL AS SHOWN ON THE ABOVE REFERENCED PLAT, SAID LINE BEING 20.00 FEET, MORE OR LESS, WEST OF THE NORTHWEST CORNER OF LOT 5 IN BLOCK 9 OF SAID PLAT; THENCE SOUTHERLY, ALONG SAID EXTENSIONr TO A POINT WHICH BEARS SOUTH 88 DEGREES 29 MINUTES 29 SECONDS EAST FROM A POINT BEING MEASURED ALONG THE EASTERLY LINE OF SAID RAILROAD RIGHT-OF-WAY AND 2r028.44 FEET NORTH OF THE SOUTH LINE OF SAID SECTION; - THENCE NORTH 88 DEGREES 29 MINUTES 29 SECONDS WEST TO THE EASTERLY LINE OF SAID RAILROAD RIGHT-OF-WAY; THENCE ALONG THE EASTERLY LINE OF SAID RAILROAD RIGHT-OF-WAY TO THE TRUE POINT OF BEGINNING; SITUATE IN THE CITY OF RENTON, COUNTY OF RING, STATE OF WASHINGTON. PARCEL 1D (SEQ NO. 968 113D) : THAT PORTION OF THE NORTHEAST 1/4 OF THE NORTHWEST 1/4 OF SECTION 36, TOWNSHIP 23 NORTH, RANGE 4 EAST W.M. , LYING EASTERLY OF THE NORTHERN PACIFIC RAILROAD RIGHT-OF-WAY AND LYING WEST OF THE FOLLOWING O DESCRIBED LINE: tT BEGINNING AT THE NORTHEAST' CORNER OF SOUTH A1D8 MS STREET (BAN��i THENCE EAST, ALONG THE CENTERLINE CORD) , 114 FEET; THENCE NORTH 30 FEET TO THE NORTH LINE OF AFORESAID STREET AND THE TRUE POINT OF BEGINNING; THENCE NORTH 644.78 FEET; THENCE NORTHERLY ON A STRAIGHT LINE, PARALLEL TO THE EAST LINE OF SAID NORTHERN PACIFIC RAILWAY COMPANY RIGHT-OF-WAY, TO THE NORTH LINE OF SAID SECTION 36 AND THE TERMINUS OF SAID LINE; EXCEPT THE SOUTH 30 FEET THEREOF; AND. EXCEPT THAT PORTION DESCRIBED AS FOLLOWS: BEGINNING AT THE SOVjHEAST CORNER OF SAID NORTHEAST 1/4 OF THE NORTHWEST 1/4; THENCE NORTH 30 FEET; Goa—aaQ� Exhibit A - Page 6 .of 7, THENCE WEST, PARALLEL WITH SAID SOUTH LINE OF SAID SUBDIVISION, TO A POINT 69.95 FEET EASTERLY OF, AS MEASURED AT RIGHT ANGLES TO, SAID O) MAIN LINE TRACT CENTERLINE AND THE TRUE POINT OF BEGINNING; THENCE NORTH PARALLEL WITH SAID OLD MAIN LINE TRACT CENTERLINE A DISTANCE OF 213.40 FEET; THENCE WESTERLY, AS MEASURED AT RIGHT ANGLES TO SAID OLD MAIN LINE TRACT CENTERLINE, A DISTANCE OF 20.95 FEET TO A POINT DISTANT 50 FEE` EASTERLY, AS MEASURED AT RIGHT ANGLES TO SAID OLD MAIN LINE TRACT CENTERLINE; THENCE SOUTHERLY, ALONG A LINE 50 FEET EASTERLY AS MEASURED AT RIGHT ANGLES TO SAID OLD MAIN LINE TRACT CENTERLINE, TO A POINT 30 FEET NORTH OF THE SOUTH LINE OF SAID SUBDIVISION; THENCE EAST TO THE POINT OF BEGINNING; SITUATE IN THE CITY OF RENTON, COUNTY OF KING, STATE OF WASHINGTON. PARCEL 2 (SEQ. N0. 968 113E) : THE NORTHERLY 180.0 FEET OF THE SUB-STANDARD NORTHWEST 1/4 OF THE NORTHWEST 1/4 OF SECTION 30, TOWNSHIP 23 NORTH, RANGE 5 EAST W.M. ; EXCEPT THE NORTH 30 FEET THEREOF CONVEYED TO THE CITY OF SEATTLE BY DEED RECORDED UNDER RECORDING NO. 3603998; AND EXCEPT THE A CONDEMNED FEET THEREOF FOR DRAINAGE EMNED G COUNTY SUPERIOR COURT CAUSE AL OF DRAINAGE NO. d DISTRICT '32912; AND EXCEPT THE EAST 40 FEET THEREOF CONVEYED TO THE CITY OF RENTON BS D DEED 'RECORDED UNDER RECORDING NO. 7206190414; ':' ' SITUATE IN THE CITY OF RENTON, COUNTY OF RING, STATE OF WASHINGTON. 009 Exhibit A - Page 7 of 7 TRANSAMERICA TITLE INSURANCE COMPANY 320 108TH AVENUE N.E. P.O. BOX 1493 BELLEVUE, WA 98009 Prepared for: Transamerica No. 861564 Customer Reference: TRANSAMERICA NAT'L SERVICES Seller Glacier Park Buyer/Borrower Renton 1200 6TH AVE. SEATTLE, WA 98101 By Attn: CAROL GARNER For*' ce on this or d er ca AA'6-8t'8-9/1-800-441-7701 JOHN W. JONES, RANDY L. RIEMAN or DAVID P. CAMPBELL (FAX 1646-8593) SCHEDULE A EFFECTIVE DATE: April 17, 1992 at 8:00 A.M. 1. Policy or policies to be issued: Amount Alta Owner's Policy $100, 000.00 Premium SEE NOTE 2 Standard Policy Tax Proposed Insured: CITY OF RENTON (SEE NOTE 3) Total SEE NOTE 2 2. Title to fee simple estate or interest in said land is at the effective date hereof vested in: BURLINGTON NORTHERN RAILROAD PROPERTIES, INC. , A DELAWARE CORPORATION . (SEE NOTE 1) 3 . The land referred to in this commitment is described as follows: See "LEGAL DESCRIPTION: " M AY 1 .11992 ' WARREN, KELLOGG, B.ARSER, DEAN & FONTES, P.S. Order No. 861564 LEGAL DESCRIPTION: PARCEL IA (SEQ NO. 968 113A) : THAT PORTION OF THE HENRY A. MEADER DONATION LAND CLAIM NO. 46 LYING EAST OF THE EAST LINE OF GOVERNMENT LOT 10 EXTENDED NORTH AND LYING SOUTHERLY OF THE SOUTH BOUNDARY OF THE BOW LAKE PIPELINE AS CONVEYED TO THE CITY OF SEATTLE BY DEED RECORDED UNDER RECORDING NO. 4131067; TOGETHER WITH THAT PORTION OF GOVERNMENT LOT 9 LYING SOUTHERLY OF SAID BOW LAKE PIPELINE; ALL IN SECTION 25, TOWNSHIP 23 NORTH, RANGE 4 EAST W.M. ; EXCEPT THE EAST 20 FEET THEREOF; AND EXCEPT THAT PORTION THEREOF LYING SOUTH AND EAST OF THE FOLLOWING DESCRIBED LINE: BEGINNING AT THE NORTHEAST CORNER OF SAID SECTION 25; THENCE SOUTH 00 DEGREES 49 MINUTES 10 SECONDS WEST, ALONG THE EAST LINE OF SAID SECTION 25, A DISTANCE OF 180.01 FEET TO AN INTERSECTION WITH A LINE PARALLEL TO AND 180 FEET SOUTHERLY OF, AS MEASURED AT RIGHT ANGLES TO, THE NORTH LINE OF SAID SECTION 25; THENCE NORTH 87 DEGREES 12 MINUTES 59 SECONDS WEST, PARALLEL WITH SAID NORTH LINE, 20.01 FEET TO AN INTERSECTION WITH A LINE PARALLEL TO AND 20.00 FEET WESTERLY OF, AS MEASURED AT RIGHT ANGLES TO, THE EAST LINE OF SAID SECTION 25 AND THE TRUE POINT OF BEGINNING OF SAID LINE; THENCE NORTH 87 DEGREES 12 MINUTES 59 SECONDS WEST, PARALLEL WITH AND 180.00 FEET SOUTHERLY OF THE NORTH LINE OF SAID SECTION, A DISTANCE OF 1,026.07 FEET; THENCE SOUTH 01 DEGREES 01 MINUTES 19 SECONDS WEST 1,095.58- FEET; - THENCE CONTINUING SOUTH 01 DEGREES 01 MINUTES 49 SECONDS WEST, ON A LINE PARALLEL TO AND 300 FEET EAST OF THE WEST LINE OF GOVERNMENT LOT 9,TO THE SOUTH LINE OF SAID GOVERNMENT LOT 9 AND THE TERMINUS OF SAID LINE; AND EXCEPT THAT PORTION OF SAID GOVERNMENT LOT 9 LYING WITHIN THE FOLLOWING: BEGINNING AT THE NORTHEAST CORNER OF SAID GOVERNMENT LOT 9; THENCE NORTH 87 DEGREES 21 MINUTES 38 SECONDS WEST, ALONG THE NORTH LINE THEREOF, A DISTANCE OF 20.01 FEET TO THE WEST LINE OF THE EAST 20 FEET OF SAID GOVERNMENT LOT 9; THENCE SOUTH 00 DEGREES 49 MINUTES 41 SECONDS WEST, ALONG SAID WEST LINE, A DISTANCE OF 1,254.20 FEET TO THE NORTH LINE OF A TRACT OF LAND CONVEYED TO THE CITY OF RENTON BY DEED RECORDED UNDER KING COUNTY RECORDING NO. 7603250650; Page 2 Order No. 861564 THENCE, ALONG THE NORTH LINE OF SAID TRACT OF LAND, NORTH 88 DEGREES 24 MINUTES 17 SECONDS WEST A DISTANCE OF 11-022.32 FEET TO A LINE PARALLEL WITH AND 300 FEET EASTERLY OF THE WEST LINE OF SAID GOVERNMENT LOT 9 AND THE TRUE POINT OF BEGINNING; THENCE ALONG SAID PARALLEL LINE NORTH 01 DEGREES 01 MINUTES 19 SECONDS EAST A DISTANCE OF 45.00 FEET; THENCE NORTH 88 DEGREES 24 MINUTES 17 SECONDS WEST A DISTANCE OF 300.01 FEET TO THE WEST LINE OF SAID GOVERNMENT LOT 9; THENCE ALONG THE WEST LINE OF SAID GOVERNMENT LOT 9 AND ALONG THE WEST LINE OF THE SOUTHEAST 1/4 OF THE NORTHEAST 1/4 OF SAID SECTION 25 SOUTH 01 DEGREES 07 MINUTES 49 SECONDS WEST A DISTANCE OF 90.00 FEET; THENCE SOUTH 88 DEGREES 24 MINUTES 17 SECONDS EAST A DISTANCE OF 300.01 FEET TO A LINE PARALLEL WITH AND 300 FEET EASTERLY OF THE WEST LINE OF THE SOUTHEAST 1/4 OF THE NORTHEAST 1/4 OF SAID SECTION 25; THENCE ALONG SAID PARALLEL LINE NORTH 01 DEGREES 07 MINUTES 49 SECONDS EAST A DISTANCE OF 45.00 FEET TO THE TRUE POINT OF -BEGINNING OF THIS EXCEPTION; SITUATE IN THE CITY OF RENTON, COUNTY OF KING, STATE OF WASHINGTON. PARCEL 1B (SEQ NO. 968 J13B) : THE SOUTHEAST 1/4 OF THE NORTHEAST 1/4 OF SECTION 25, TOWNSHIP 23 NORTH, RANGE 4 EAST W.M. ; EXCEPT THE EAST 20 FEET THEREOF; AND EXCEPT ANY PORTION THEREOF LYING WITHIN THE PLAT OF BURLINGTON NORTHERN INDUSTRIAL PARK RENTON II, AS PER PLAT RECORDED IN VOLUME III OF PLATS, PAGES 42 THROUGH 44, RECORDS OF KING COUNTY; AND EXCEPT THAT PORTION LYING EASTERLY OF THE FOLLOWING DESCRIBED LINE: BEGINNING AT A POINT ON THE NORTH LINE OF SAID SOUTHEAST 1/4 OF THE NORTHEAST 1/4 WHICH IS 300 FEET EAST OF THE NORTHWEST CORNER; THENCE SOUTH 01 DEGREES 01 MINUTES 49 SECONDS WEST, ON A LINE PARALLEL TO AND 300 FEET EAST OF THE WEST LINE OF SAID SOUTHEAST 1/4 OF THE NORTHEAST 1/4, TO THE NORTH LINE OF LOT 7 IN BLOCK 7 OF BURLINGTON NORTHERN INDUSTRIAL PARK RENTON II, AS PER PLAT RECORDED IN VOLUME 111, PAGES 42 THROUGH 44, RECORDS OF KING COUNTY, AND THE TERMINUS OF SAID LINE; AND EXCEPT ANY PORTION THEREOF LYING WITHIN THE FOLLOWING: BEGINNING AT THE NORTHEAST CORNER OF SAID GOVERNMENT LOT 9; Page 3 Order No. 861564 THENCE NORTH 87 DEGREES 21 MINUTES 38 SECONDS WEST, ALONG THE NORTH LINE THEREOF, A DISTANCE OF 20.01 FEET TO THE WEST LINE OF THE EAST 20 FEET OF SAID GOVERNMENT LOT 9; THENCE SOUTH 00 DEGREES 49 MINUTES 41 SECONDS WEST, ALONG SAID WEST LINE, A DISTANCE OF 1,254.20 FEET TO THE NORTH LINE OF A TRACT OF LAND CONVEYED TO THE CITY OF RENTON BY DEED RECORDED UNDER KING COUNTY RECORDING NO. 7603250650; THENCE ALONG THE NORTH LINE OF SAID TRACT OF LAND NORTH 88 DEGREES 24 MINUTES 17 SECONDS WEST A DISTANCE OF 1,022.32 FEET TO A LINE PARALLEL WITH AND 300 FEET EASTERLY OF THE WEST LINE OF SAID GOVERNMENT LOT 9 AND THE TRUE POINT OF BEGINNING; THENCE ALONG SAID PARALLEL LINE NORTH 01 DEGREES 01 MINUTES 19 SECONDS EAST A DISTANCE OF 45.00 FEET; THENCE NORTH 88 DEGREES 24 MINUTES 17 SECONDS WEST A DISTANCE OF 300. 01 FEET TO THE WEST LINE OF SAID GOVERNMENT LOT 9; THENCE ALONG THE WEST LINE OF SAID GOVERNMENT LOT 9 AND ALONG THE WEST LINE OF THE SOUTHEAST 1/4 OF THE NORTHEAST 1/4 OF SAID SECTION 25 SOUTH 01 DEGREES 07 MINUTES 49 SECONDS WEST A DISTANCE OF 90.00 FEET; THENCE SOUTH 88 DEGREES 24 MINUTES 17 SECONDS EAST A DISTANCE OF 300.01 FEET TO A LINE PARALLEL WITH AND 300 FEET EASTERLY OF THE WEST LINE OF THE SOUTHEAST 1/4 OF THE NORTHEAST 1/4 OF SAID SECTION 25; THENCE ALONG SAID PARALLEL LINE NORTH 01 DEGREES 07 MINUTES 49 SECONDS EAST A DISTANCE OF 45.00 FEET TO THE TRUE POINT OF BEGINNING; SITUATE IN THE CITY OF RENTON, COUNTY OF KING, STATE OF WASHINGTON. PARCEL 1C (SEQ NO. 968 113C) : ALL THOSE PORTIONS OF GOVERNMENT LOT 11, OF THE SOUTHWEST 1/4 OF THE NORTHEAST 1/4 AND OF THE SOUTHEAST 1/4 OF THE NORTHWEST 1/4 OF SECTION 25, TOWNSHIP 23 NORTH, RANGE 4 EAST W.M. , DESCRIBED AS FOLLOWS: BEGINNING AT A POINT ON THE EAST LINE OF GOVERNMENT LOT 10 IN SAID SECTION AT A POINT 255.38 FEET SOUTHERLY, AS MEASURED ALONG SAID EAST LINE, FROM THE SOUTH LINE OF HENRY MEADER DONATION LAND CLAIM NO. 46; THENCE WESTERLY ON A STRAIGHT LINE TO A POINT ON THE EASTERLY LINE OF THE NORTHERN PACIFIC RAILWAY COMPANY RIGHT-OF-WAY AT A POINT 289.12 FEET SOUTHERLY, AS MEASURED ALONG SAID EASTERLY LINE, FROM SAID SOUTH LINE OF THE DONATION LAND CLAIM AND THE TRUE POINT OF BEGINNING; THENCE SOUTHEASTERLY TO A POINT ON A LINE PARALLEL WITH AND 60 FEET EAST OF SAID EASTERLY LINE •OF THE NORTHERLY PACIFIC RAILWAY COMPANY RIGHT-OF-WAY AT A POINT 1100 FEET NORTH OF THE EAST-WEST CENTERLINE OF SAID SECTION; THENCE SOUTH, ALONG SAID PARALLEL LINE, TO A POINT ON THE SOUTH LINE OF A TRACT CONVEYED TO BROADACRES, INC. BY DEED RECORDED UNDER RECORDING NO. 7504010373, SAID POINT BEING 545.6 FEET NORTH OF SAID EAST-WEST CENTERLINE; Page 4 Order No. 861564 THENCE EAST, ALONG . SAID SOUTH LINE TO THE EAST LINE OF THE SOUTHWEST 1/4 OF THE NORTHEAST 1/4 OF SAID SECTION AT A POINT 545.6 FEET NORTH OF SAID EAST-WEST CENTERLINE; THENCE SOUTH, ALONG SAID EAST LINE, TO THE NORTHWEST CORNER OF LONGACRES PARKWAY AS DELINEATED ON THE FACE OF BURLINGTON NORTHERN INDUSTRIAL PARK RENTON II, AS PER PLAT RECORDED IN VOLUME 111 OF PLATS, PAGES 42 THROUGH 44, RECORDS OF KING COUNTY; THENCE SOUTH 87 DEGREES 57 MINUTES 39 SECONDS WEST 1,624.00 FEET, MORE OR LESS, TO THE INTERSECTION OF THE NORTHERLY EXTENSION OF THE EASTERLY LINE OF THE PROPOSED P-1 CHANNEL AS SHOWN ON THE ABOVE REFERENCED PLAT, SAID LINE BEING 20. 00 FEET, MORE OR LESS, WEST OF THE NORTHWEST CORNER OF LOT 5 IN BLOCK 9 OF SAID PLAT; THENCE SOUTHERLY, ALONG SAID EXTENSION, TO A POINT WHICH BEARS SOUTH 88 DEGREES 29 MINUTES 29 SECONDS EAST FROM A POINT BEING MEASURED ALONG THE EASTERLY LINE OF SAID RAILROAD RIGHT-OF-WAY AND 2,028.44 FEET NORTH OF THE SOUTH LINE OF SAID SECTION; THENCE NORTH 88 DEGREES 29 MINUTES 29 SECONDS WEST TO THE EASTERLY LINE OF SAID RAILROAD RIGHT-OF-WAY; THENCE ALONG THE EASTERLY LINE OF SAID RAILROAD RIGHT-OF-WAY TO THE TRUE POINT OF BEGINNING; SITUATE IN THE CITY OF RENTON, COUNTY OF KING, STATE OF WASHINGTON. PARCEL 1D (SEQ NO. 968 113D) : THAT PORTION OF THE NORTHEAST 1/4 OF THE NORTHWEST 1/4 OF SECTION 36, TOWNSHIP 23 NORTH, .RANGE 4 EAST W.M. , LYING EASTERLY OF THE NORTHERN PACIFIC RAILROAD RIGHT-OF-WAY, AND LYING WEST OF THE FOLLOWING DESCRIBED LINE: BEGINNING AT THE NORTHEAST CORNER OF HENRY ADAMS DONATION LAND CLAIM; THENCE EAST, ALONG THE CENTERLINE OF SOUTH 180TH STREET (FORMERLY CORD) , 114 FEET; THENCE NORTH 30 FEET TO THE NORTH LINE OF AFORESAID STREET AND THE TRUE POINT OF BEGINNING; - THENCE NORTH 644.78 FEET; THENCE NORTHERLY ON A STRAIGHT LINE, PARALLEL TO THE EAST LINE OF SAID NORTHERN PACIFIC RAILWAY COMPANY RIGHT-OF-WAY, TO THE NORTH LINE OF SAID SECTION 36 AND THE TERMINUS OF SAID LINE; EXCEPT THE SOUTH 30 FEET THEREOF; AND EXCEPT THAT PORTION DESCRIBED AS FOLLOWS: BEGINNING AT THE SOUTHEAST CORNER OF SAID NORTHEAST 1/4 OF THE NORTHWEST 1/4; THENCE NORTH 30 FEET; Page 5 Order No. 861564 THENCE WEST, PARALLEL WITH SAID SOUTH LINE OF SAID SUBDIVISION, TO A POINT 69.95 FEET EASTERLY OF, AS MEASURED AT RIGHT ANGLES TO, SAID OLD MAIN LINE TRACT CENTERLINE AND THE TRUE POINT OF BEGINNING; THENCE NORTH PARALLEL WITH SAID OLD MAIN LINE TRACT CENTERLINE A DISTANCE OF 213 .40 FEET; THENCE WESTERLY, AS MEASURED AT RIGHT ANGLES TO SAID OLD MAIN LINE TRACT CENTERLINE, A DISTANCE OF 20.95 FEET TO A POINT DISTANT 50 FEET EASTERLY, AS MEASURED AT RIGHT ANGLES TO SAID OLD MAIN LINE TRACT CENTERLINE; THENCE SOUTHERLY, ALONG A LINE 50 FEET EASTERLY AS MEASURED AT RIGHT ANGLES TO SAID OLD MAIN LINE TRACT CENTERLINE, TO A POINT 30 FEET NORTH OF THE SOUTH LINE OF SAID SUBDIVISION; THENCE EAST TO THE POINT OF BEGINNING; SITUATE IN THE CITY OF RENTON, COUNTY OF KING, STATE OF WASHINGTON. PARCEL 2 (SEQ. NO. 968 113E) : THE NORTHERLY 180.0 FEET OF THE SUB-STANDARD NORTHWEST 1/4 OF THE NORTHWEST 1/4 OF SECTION 30, TOWNSHIP 23 NORTH, RANGE 5 EAST W.M. ; EXCEPT THE NORTH 30 FEET THEREOF CONVEYED TO THE CITY OF SEATTLE BY DEED RECORDED UNDER RECORDING NO. 3603998; AND EXCEPT THE WEST 20 FEET THEREOF FOR DRAINAGE CANAL OF DRAINAGE DISTRICT NO. 1 AS CONDEMNED IN KING COUNTY SUPERIOR COURT CAUSE NO. 32912; AND EXCEPT THE EAST 40 FEET THEREOF CONVEYED TO THE CITY OF RENTON BY DEED RECORDED UNDER RECORDING NO. 7206190414; SITUATE IN THE CITY OF RENTON, COUNTY OF KING, STATE OF WASHINGTON. Page 6 Order No. 861564 SCHEDULE B REQUIREMENTS. Instruments necessary to create the estate or interest to be insured must be properly executed, delivered and duly filed for record. EXCEPTIONS. Schedule B of the policy or policies to be issued will contain exceptions to the following matters unless the same are disposed of to the satisfaction of the Company. A. Defects, liens, encumbrances, adverse claims or other matters, if any, created, first appearing in the public records or attaching subsequent to the effective date hereof but prior to the date the proposed Insured acquires for value of record the estate or interest or mortgage thereon covered by this Commitment. B. Standard exceptions set forth in inside of back cover. C. Special exceptions: 1. Real Estate Excise Tax pursuant to the authority of RCW Chapter 82.45 and subsequent amendments thereto. As of the date herein, the tax rate for said property is .0178. 2. General taxes, as follows, together with interest, penalty and statutory foreclosure costs, if any, after delinquency: (1st half delinquent on May l; 2nd half delinquent on November 1) Tax Account No. Year Amount Billed Amount Paid Principal Balance 252304-9001-00 1992 $ 436.52 $ .00 $ 436.52 (Covers Parcel 1A, except Northwesterly portion) 000580-0019-07 1992 $ 292.48 $ .00 $ 292.48 (Covers remainder of Parcel 1A) 252304-9082-02 1992 $ 472.28 $ .00 $ 472.28 (Covers Parcel 1B) 252304-9004-07 1992 $ 1, 696. 13 $ . 00 $ 1,696:13 " (Covers portion of Parcel 1C and includes other property) 252304-9041-02 '1992 $34,•102.48 $ .00 $34, 102.48 (Covers Westerly portion of Parcel 1C and includes other property) 252304-9002-09 1992 $29,259.80 $ . 00 , $29,259.80 (Covers Westerly portion of Parcel 1C and includes other property) 252304-9019-00 1992 $ 1,703 .32 $ . 00 $ 1,703 . 32 (Covers remainder of Parcel 1C and includes other property) - Page 7 Order No. 861564 362304-9002-06 1992 $ 653 .28 $ . 00 $ 653.28 (Covers Parcel 1D) 302305-9007-06 1992 $ 219.36 $ . 00 $ 219.36 (Covers Parcel 2) The levy code for the property herein described is 2110 for 1992. 3 . Special taxes, as follows, together with interest, penalty, and statutory foreclosure costs, if any, after delinquency: (1st half delinquent on May 1; 2nd half delinquent on November 1) Tax Account No. -Year Amount Billed Amount Paid Principal Balance 252304-9001-00 1992 $ 151.30 $ .00 $ 151.30 (Covers Parcel 1A, except Northwesterly portion) 000580-0019-07 1992 $ 62.14 $ .00 $ 64.14 (Covers remainder of Parcel IA) 252304-9082-02 1992 $ 177.83 $ .00 $ 177.83 (Covers Parcel 1B) 252304-9004-07 1992. $ 354.36 $ .00 $ 354.36 (Covers portion of Parcel IC and includes other property) 252304-9041-02 1992 $ 275.18 $ .00 $ 275.18 (Covers Westerly portion of Parcel 1C and includes other property) 252304-9002-09 . - 1992 $ 640.16 $ .00 $ 640.16 (Covers Westerly portion .of Parcel 1C and includes other property) 252304-9019-00 . 1992 $ 405.63 $ .00 $ 405.63 (Covers remainder of Parcel 1C and includes other property) 362304-9002-06 1992 $ . 253.35 $ .00 $ 253.35 (Covers Parcel 1D) 302305-9007-06 1992 $ 39.43 $ .00 $ 39.43 (Covers Parcel 2) Page 8 Order No. 861564 4 . ASSESSMENT: ORIGINAL AMOUNT: $60, 181.94 INTEREST: 11. 65% FROM: July 13, 1984 ANNUAL INSTALLMENTS: 15 INSTALLMENTS PAID: 6 NEXT INSTALLMENT DELINQUENT: August 14, 1991 LEVIED BY: City of Renton FOR: Streets, sewer and water L.I.D. NO. : 314 ASSESSMENT ACCOUNT NO. : 91 (Covers portion of Parcel lA and includes other property) 5. ASSESSMENT: ORIGINAL AMOUNT: $204,180.27 INTEREST: 11.65% FROM: July 13, 1984 ANNUAL INSTALLMENTS: 15 INSTALLMENTS PAID: 6 NEXT INSTALLMENT DELINQUENT: August 14, 1991 LEVIED BY: City of Renton FOR: Streets, sewer and water L.I.D. NO. : 314 ASSESSMENT ACCOUNT NO. : 68 (Covers Parcel 1B) 6. ASSESSMENT: ORIGINAL AMOUNT: $197,617.48 INTEREST: 11.65% FROM: July 13, 1984 ANNUAL INSTALLMENTS: 15 INSTALLMENTS PAID: 6 NEXT INSTALLMENT DELINQUENT: August 14, 1991 LEVIED BY: City of Renton FOR: Streets, sewer and water L.I.D. NO. : 314 ASSESSMENT ACCOUNT NO. 89 (Covers Westerly portion of Parcel 1C and other property) Page 9 Order No. 861564 7. ASSESSMENT: ORIGINAL AMOUNT: $368, 058.25 INTEREST: 11.65% FROM: July 13, 1984 ANNUAL INSTALLMENTS: 15 INSTALLMENTS PAID: 6 NEXT INSTALLMENT DELINQUENT: August 14, 1991 LEVIED BY: City of Renton FOR: Streets, sewer and water L. I.D. NO. : 314 ASSESSMENT ACCOUNT NO. : 43 (Covers Westerly portion of Parcel 1C and includes other property) 8 . ASSESSMENT: ORIGINAL AMOUNT: $54,825.87 INTEREST: 11.45% FROM: March 10, 1980 ANNUAL INSTALLMENTS: 15 INSTALLMENTS PAID: 10 NEXT INSTALLMENT DELINQUENT: April 11, 1991 LEVIED BY: City of Renton FOR: Streets, etc. L.I.D. NO. : 302 ASSESSMENT ACCOUNT NO. : 43 (Covers Parcel 2 or portion thereof) 9 . EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: City of Seattle PURPOSE: Electric transmission and distribution lines AREA AFFECTED: As described therein lying within Parcel lA DATED: --- RECORDED: March 27, 1962 RECORDING NO. : 5417049 Said easement was given to correct and replace easement dated November 28, 1961. 10. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: DISCLOSED BY: Instrument recorded under Recording No. 6073135 PURPOSE: Roadway AREA AFFECTED: The East 80 feet of Parcel 1D - - Page 10 Order No. 861564 11. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: City of Renton PURPOSE: Roadway AREA AFFECTED: The Southerly portion of Parcel 1D DATED: August 11, 1981 RECORDED: October 7, 1981 RECORDING NO. : 8110070398 12 . EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: City of Seattle PURPOSE: Sewer line AREA AFFECTED: As described therein lying within Parcel lA and includes other property DATED: --- RECORDED: October 17, 1967 RECORDING NO. : 6255262 13 . EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: Puget Sound Power & Licht Company PURPOSE: Aerial electric transmission line AREA AFFECTED: The Easterly portion of Parcel 2 DATED: June 3, 1974 RECORDED: June 12, 1974 RECORDING NO. : 7406120656 14. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: Olympic Pipe Line Company PURPOSE: Oil pipe line AREA AFFECTED: As described therein lying within' Parcel lA and includes other property DATED: August 12, 1965 RECORDED: September 13, 1965 RECORDING NO. : 5927062 Supplemental easement recorded under Recording No. 6255972. 15. Mineral type reservations contained in deed recorded under Recording No. 5386152. (Covers 1/4 interest in Parcel 2) 16. Mineral type reservations contained in deed recorded under Recording Nos. 5050633 and 5050635. (Covers 3/4 interest in Parcel 2) Page 11 Order No. 861564 17. Any questions that may arise relative to the location of the centerline of Northern Pacific Railroad Company's right-of-way as located within Section 25, Township 23 North, Range 4 East W.M. referenced in the captioned legal description of Parcel 1D 18 . UNRECORDED LEASE AND THE TERMS AND CONDITIONS THEREOF: LESSEE: Broadacres, Inc. LEASE NO. : 217401 DISCLOSED BY: Unrecorded rent roll as submitted to the Company PURPOSE: Manure storage AFFECTS: Triangular portion of Parcel 1C 19. LIEN: CLAIMED BY: Dennis R. Craig Construction, Inc. CLAIMANT ADDRESS: 7710 185th Avenue N.E. ; Redmond, WA 98052 AGAINST: Western Utilities IN AMOUNT OF: $506.55 FOR: Labor, material or equipment n WORK COMMENCED OR MATERIAL DELIVERED: January 12, 1991 WORK CEASED: January 14, 1991 RECORDED: April 14, 1991 and April 30, 1991 RECORDING NO. : 9104155116 and 9104300298 (Covers 1100 S.W. 27th) NOTE 1: A showing should be made of the authority of the officers executing the proposed deed or contract on behalf of Burlington Northern Railroad Properties, Inc. , and said deed or contract must be - authorized by resolution of the directors of Burlington Northern Railroad Properties, Inc. , and certified copies submitted. NOTE 2: Liability under the policy to issue will�e apportioned to each parcel in accordance with the amount of the sale price which is assigned to each parcel. .Written confirmation of the value to be apportioned to each parcel should be furnished to the Company. NOTE 3 : Any transaction involving real property to be purchased by the City of Renton must be made in compliance with the appropriate statutory provisions. Page 12 Order No. 861564 END OF EXCEPTIONS Investigation should be made .to determine if there are any service, installation, maintenance or construction charges for sewer, water, or electricity. In the event this transaction fails to close, a cancellation fee will be charged for services rendered in accordance with our rate schedule. RLR:tdw ENCLOSURES: Sketch Page 13 �, , �....�.,.�..�....t.. IMM `�` '• ,�. .. - <::-..• ,:,. •<+:r«.^;•:J.;•„ ''�'.• '�3!%'lil:.. ; .•'Hayti•Kv„t+. �p u� M wuw._....` _,'79' :S._ � oiNa.��_.Y•.._.: - �. .�» .ir:4ijs::-...�}..;,a {. '1Y�L7,�. i.•r�.,: r.� :..: :1r..��.�♦%' .:.r;,J.,r. ...�w.' :. <<:••1 a/41}�'! ,.};'!•.` .y..• �'•'. fir~ }`• r,.TS1 KfltC`5+ z, �p. �••r TPUt , e':.!l�.h`+�:;t•• ' ,yf •.� 'G:1:•�11 �1-.' :P dr,•t..;,;4,•;y' 7'R'i' '.T?m <'1'L'ftS� ktA!!e hi r dtyr >? ;� J � a �� � 44 2211=bat:�v:t��l7ri.C 'PitRK CkY.�AIT'1 }it�teeato.;Qlsrporabian•�: asd.•D., d ', e :l�esoittniter're11c-ti''tba;Q}etitorr�'.'gsr iee of-tbe'2tiit' �I[bd. 9rAr1TrZ;.''9phllnitCllA1 CO2TO�ztilm t�3ti®iter cullaQ'the c�aat�e; prti' ':of`th0 r3bCa�sli"-:`'. That- the Qrantors SOY'nttA 'ia: ooiieidcretifln'ot:the 'suss of ORb:JI»�•7Gd +Dd ,..:. rUla u•Cher.Ynluat ocristiotieJ• roceipt of vbIch is Dereby.;icOmpv1etSgled� ;•':.i 4 ` IIdreDy convoy an.i grant to -the 'Qratitee,- I 6UCCee80r6••and, ^;use and' authority to conatruaf erect;'¢lt`er;1:i=rovep.repair oyei�tt'nn��,ti id<•-;�; :. el.ectrie transa4 union-4nd'-diotriaut3ori' li6ei;' octiaisting:of'.the:asoiasiriy„•tw+e�e• sad polnu, vibh bracoo, gu7e -and'euiuhoro, 'drid".tcs plabo ..lrpcn'v:` euopessd=trtinamti•'slanj=.a�, ::.::.:..' ... alstriDution and elg>,al vl7esy'h;iulatore" 'cro98m-flr>nA L?anBrol'me?8 and Othdr'1]eee8da2'yr •',,• or convenient ammytenancea across over and-Upon the Zolloring:described'.li ads and : 1 ps-nnia�a ,�ttttntnli in thw (rninry of'lCfrtg; 6tata. of Vashing►oa;-4fa=grit"s ; Mat porclan or Wvernmont IAL'9 tlovnrntasnt Lat``10�=(»Yern3mtt"LoL Henry Minder Ibnation•Claim. Ib. 46, all in Section 25, 1bvnsbi,D 23 Xbrth, 'Range h V%At, V.74., dearri)inri net f011civaI ikgluuJ.r� aC Llja }vital: of InWtUcction-eit the. Daamez.oouth`IDn. or',1Ia Tg1a mY'. '" ... .... Ibnation Glnlltt :io. 46.and t-h•.east'nlargin;e2"the.Ibildlerci:Pacifie'RailirtCl.'�tii�rt .. :of'SJsy;.'thnnce BQtsthnrly' 'the.east s+args 1'4 f;vstid rift mf vay to. a point h0 feet savth, moaaured at right anglaa t irons th4:aauth Margin of rsenr'y )badvr ... rutlaLlurl C &IM; tltent o event yeutt11A1 to stud:_4o Xatt; lbtumlznz. z".•fr.,r (;lttil7 L�;filll a d18tb1C8 or10 iCtt;; tllOnCL' il;rner1Y°77�'aYlel' to:;atidslA'tDeD easLarly from-the-'aunt sal gin'of :.ar: railv4y 7ri t a! vey;'.cryAintwne>;:af 25-teeb�; •;:, � -to' a' point 15 f4*t aouttiar measured at right, a ' frow amid`eoni8er met 6:f amid ITerr]- h_ctdcr Doneticu Claim; -thence aeot°'pmra11s1'to`}esd 13!,S=e0 evrntC --Or' snla Innation i']ntm margin to_ the eant line) o.' CQver»:ceslt Lot 1Q in'tbc: .of f3ectioo' 25, "lbvnship 23 lbrth, Pit' I•hat,: V.M.j,'thenes. south alazi�:th�'•'eaot !•'i'- :: lin* of acid Covernmant tot io ti diatattoo`ot B •font" tbcrsee .CaaSJ':a>,• /3 lva• r to 5nid enot line of G vartumeul. ra L 10 a dir taace of is reet j..t:tadcs:Dottie'.". • ptsral.Lel to una lU i'eet easterly from avid esst,11ne of 0�verntat:nt: 1, t:10-.a,.•,. ;:ti• `:, ;:, 'rf dlrtnnco of 40 feet: to caia aOutz nsr_Te-s c!t L-�s-J:�u`slrt 1�ooatioa lltii�ija� aeaasr-�T � _'.' t . w Coat aloca s_id'aauth-margin of Sssuy 1l�+de+r Ain+�t{on:'C1-Lta_a:dietad�C+t.i'SZ,j, .. •' thence na:-th nt rijilt angles,tc Bald-Dora 41Cn:•CI.Ri��i'adistassw,at+:1G Se j''� :•= :{�� R.� -raot pa.a11e1 to ana lU .rest aortenr]y Stoat said;Doisa.tioa Claim-'lino:to';i; 1�L::: 'T ; 15 feat oast of the.northerly nroduotlon'.or'ttu east- line of:Bald— Qii6rnmaL',;Tat. theres north:'pess1101 •ac'alit-ls`fi.f:�ab�wr]y Yi•cm'tbe mrth.i'lyij> od�:rLio�d'kef-tea";.:` , , oco,6 line of Goveris=mt:I0t'10 .tQ:.ttid tsotittl3"llns:ot::Sa• 73T►.iakss',Y1ys..lJcaa of fv; thence er1,y th ventSo att3A•'"fcilth li>2d:.cit'aaiQ Pipe�.Line:xi 'bt �j;l,Q;;:- j."r ;`' " ' r 'e1Sfs the northerly tot.10; ..thence:sout]i,eslyi. alorLd the northerly production of:t?ie aust line:of cbvnrnrtacsst- ICE 10-to-44ba iszmta`'[': t. �•',+7.+ f lint or void Uormtioa Cl.oimj 't2ivnce.vea Larly slug:tba:youth l.ina`of. Tirv:aa H� rnnatlon CIaLn W the point-or -w&:. ai1g: AISn that portirm nf aniti' �bwlrn}nrest _T1 11 sled acid•rowLtion Qmita,boing'Aoitripk`,., r' of lean 10 feef in Width :yiaa'l$ tt:ov- ...Catch oirJn of tiho. caatorlSrio d�oGzibe.t as .ollvva f -Fhgi nntng at thn mint (,t tnteraer-tion df th* aouth..lina of Soruy Houder .D:a,MUOD Claim 1b. 116 and tilt coot lint of Covcrnmous Tc-b 10 in the N .ot.-•Dootirm P? ,. � rikttnl,lu 25 Bor.11, Rs+ It EmaLt V.M. tllrncv veitarlyr airag anla'0ut1tIl 11IIC of � . ar4�i tlJtl henry Kiader TAnntion Claim to the east line of. the Ibrthern Pacific liailxay "_ HIght nt Way; t.hAnre �ontlnuing vecterly along. said. $eo2j,. Danatiow cazift,,;. •ltn�e 1a .... . r. , ntonce of 4•.^_.65- fcet t;o L-point.on Bald I -flora Psuatia.14slluay R1�11t:Cuf-luny Ta Y.Ach la -be true point or be 1nn1L • tbencc.VeSttrly o17.An. =916-,"To Ue-iloli ; . P g 8. of 1050'40" to the east margin of:,.bacortiary '3tat AY. .,51d� of v-y of the lbrthekn Pv4ifia RailvmV, .the �(�ii.aago, t UV91u"Oz, FMcirlc Iiaila�ea tus,l life Pugn L gc;uLV $IvcGtic 11k�4C of Y. 47 AILO that la7'{ton of said Q•jvernmebt_ Iot 11 and said Do=tion C'111m-Dei13Z.•a s>:ri),.: "� •, r lnrnd 7,0 f4ot in :ridt'b lyine,a fe4.t on ouch Lido of a cCntn;lisrw dhSa11'ilftbY's�ei n '�7ba14��ty_-Q7t is � TI Tba catntr,at6f the above daecTibQd'` toot.eLriD;,at.ri�• :tr, c�ol-th tborsfrorl`30.'aet u,d eouth'.'ttl�lrbtfata.:;0 tall;:;.aid. itstar!♦�4iol�"lSe�i'tgti Do's` . t:. T po'_nt 190.:feet vaot from tlso,vret.4.31m �f'they.ybrtvarn%rhjz Ncq) motsatired along the conterilna of -aaid 30:faot etrly, )rJ(CF,YI'II1C{'ttfOrl��Crop! tMt'j' ' ` rk �`k7L t land. GeacriDCti In oetld 30 foot•of rid Mlia. O(taclir-nt is glvon to enrrt'at _wrid. rl,plane -thGt nert"n-Teaab3Writ z1ftitqdYtbi 20th rI(�yr of Mvem�ioi, 1Q61, e.xea%ted;bV,the;�nb! C tsordJ'So�th6c.�aice`Qra itte fie'iilinin d. , ,,,1 •"t.. _ _ Together. vith•-t]� zips3t: at.. '':t1.t 6=.to e,�2' �.. of in1;~oeo to and e, -naa from saifl lgnda �atns>t�Rd,�et`eet.:lT�adi {v eh,,TOTrsatvi'dr� :l sg'^ Pli r1lone err rfTnatr+lOt :reeamtzucti re r _ _ 1 n8• ag i PsirS ng�..re arrri2t6,:•albbriii$y.�b�si~ i]a.3::c•:>�;, f,-Lrvliing exta ororr:1.1zig said-line &Lid tlta rjVA af.'any tZID�:.LC'retD']Yq Saa` i0Va2� curd zlolvo, ,.;.rum uttQ nl7purtenance9 from aw a landt3 r - YAlso the furthar right_ to r.l,.ar anid r1Sht ol•vay oiid krep-tNc came .c1;oar of brush., tiulbor and all fire hnaa av e.ad the righ�.;td.romom: sj-.tre6al._Zi:..nA}rj,},c���j,,�a r 1..•J.....a wlc i.4111AU0 wi. naiu culSom nt area WAltal oy.relhs -,-wu1d{•oaCdrigbr•theytTnt�ar18sioa and ala-r 1bUtlon 11nes. + . , ; . :, _'w;,.,,. :,'..:,,...,,;,,<.,• /v r of Ceattle - _ � Y gave to roviae aad.dl6:e:, iba taeilitlee on-toe:. a ibc4 pruBliaa d at ito oWn :oat and cxyonac:e2Tould'•railrodd:trztX con2truction.1a the•2ltture requirr ouQL r-vluion and alteration n,a. fletelmired-by' the Chief Edgineer .cf Orea� Ys�arsr:xul rci-�.n y _ _ s''.�i!v� Cen,_,;, o: itr. tL:ceaooro OT. BABij�.Z1. In th•, event that uhc Orentco ohall lrc re uirad to q relocate Its for t:c cr • _ . � . Z=...r�2ro3d traa[,. the _Clrarttat:hr=. .1• ,~,..q %a6.�eo w jai'G:i.iC Li:C GrtMj1 tte, at no additional-anzt.,to the tlrent2a suoh adeil�ieatsl': ;r "s' 11 .1 enaenrMt �1:•s a aA r. hn rn ui rad for tha rolooatioo of tho Grantee'a '➢vier U1 . t , . faeilitiaa, or tit/ pu-C tbcrcof, ircta nYailaLle ajaLmnt-lewd Q+sm.cvzied by arnhtOT It 1D .utl lfrs::,od told lyredd that tha Mtv. of roattl.s, D.partnant ,cPy errant OthRr uf.ilitScB '!hG zi t and prim gee '- 3h le fit? occupy ant Lisa Jj Lnt;,7;tIle�attid %r5= riaclon and diatrIbutit•il livaa. ~t` { •T t ., �.�� ua .ud:.,Et ie L(t �i� r-r�}vrisioii, aa•prov�Gtd by lev, far aCT4jCL:OO1O6eCrSt. L:1114.'r+C to the ('rnatore throu&h its nee1,iti. �:•.,. G ig~nce iii t,Lc'conetrtiatl•Otl, IDZLLRtaaBatE�•8ad; • r arcrnt2oit of aald tt•a"fiu ma Lull and dlatrlbutioa llnae over. and-acnas..the. *rtY Ot:.'':'" Y 1c aitld Ornritore. ,• tt ,�.. i•1. ,,.; :...r p ��,• 1`in tlrRntora, tliQlr ,Taira, auccesaoro or•asaigna, avrenant anq mill not do a2Ly blaati-ag or ddnt:'.Taugc any exploalvsa vitbia::s•:diTitaace ..tdrge:2itmdrii'R ' r, ,, i (}40) reel of auzd Iinh without g.vitZg raaaart�ble•noSoe,is vriting;'to the t?i9a{,eey;�te Y succeaoara or aenigns o.0 intention so to Rn:..*,;'z "j,%,,' ..r•,:;:: r r ,..• 'the rlgh •. . _ T •-r .,r ' 1=. - ! t - ta, titt y,u, priYllugro at,d tiuthorl' IleTdDy $,*9Ltdd 8nd11+Caatinua cad TDA , in vice wit,Ll ouutl C2m#: I. ad Lh+` (Irantee, /to oucceag6rs,,o2''1i�Ea'�'1Ti�. A?�ilii` at rT.—r,va nald tovero and poles, VI-res and appuri:SMAn07ee frets 7d'9' lasda`;.dt:'b1s1.lI bt2tar-. . vine Nr7 nontl;r abcndnn nntr' 11nee, at 'vhioh time all such riIits, tZLLi', ttad nu•thnrl ty horwby g.•antea ohall:. tervtinnte. , e,•c yr -� . . IN 'dil'EL,d QHERIW,, thin instrument hee beer, o'"Cuted thiq dTry Ana ycr+r friar (11)uve vr1L•t'on. t i Vice hrnai,l) Individual. drknnvl.eri�nt I '-!ail VS.lr l f"-�••, rIn a r „µt H+.r- _.I.,r •1*1 i ula~+,['1� a �t:1r}/',� MlU �{�Y•Pd4:Y1>i�l s ._. ', 1'N%L":11 Y 'J icx' . lwv'ik s ,29 r t 1.11VI r t 5 �� Cll:� :�. Yi Lis �:�• ;��' _�TJI.^L� .QF�Wh9lIINvI'ON J . .. � r 1 .r.wJ;;i ,�t; � w CG�1� .2CZI�r..`: f .r . lr}• \Y 11f L'1te nnderr+2 c+A. A t�c�r� FJblier',ctc b'�ireoy certity tndt-oil s3la of: (►7f � j (� �-r�1C_/ _ 1 oorvnl ai `aced betofe 6e r• rt: i P!}�S. I r I.'��i wife! to r�s �m ;De t2io inAividuilaidener�.Darl,i.n.and .vho axeet 6d' =j,.� the vit}>lr. in.trwrwr►t, and cck ollrlodged�2?u►t -41*y aLg1h lFie eetne;ea the trod a,nd YvJ.t:ntdry-. ac-D culd dccd for i.hn users' auc1..•yuryoaos_ t.A�ct�lli 1zuLitiov+ed. Given under atv hand a}id oil.elal deal tl�e ray rstid,yeai�'iz �:t�te aertitilfa�s•:(ya{u�iY�n, :,.r..� -.v`- �♦ 1i• T-I rrc✓a 1'f i�.1.1 i3'kl) -y-y r'�t ,,jr..rl!h -�y�'. :yl..l -t.l,.,,ry7 r.��i...." ..ry i •.t•1 y j.''•t.i �'�� �h � t .', l,,a,-'•t :'f"' ip +wx ''{. •.te1(,, i J \\Z *F't:;ITI1 C.'•t 'L'.�it.:.t:• w.a.: r,....a..... wl.h.rw•ra.t.uw 2Jotar Pub o.in . 8tat)f I 'r1nbLZt.t�G:lu raaldict�_: -8�be. '����'`�' 1 ... - Lam•. ..� •>�:'.:!!]]jj}77}JJIIi (Carjlorn+:_ AckPovLoflxmcnt) -Y sTAT . otT v-jgN?90'r•) .i-,t1,•^1 (+ All ul TIMS _- z8tn <tny of apr>z___-- A.D. IS52, berme arc i rrraorinl_lf vpr,�rfre>a �, W. Dc Sna try ale known to� be trio t(. 01re11y _. ,tn mn-.bv";bO. be thh �`:, • ;+.• } k cro Enr7 i of bile curporatJ.oa that o:yo:utod th= vlthla eald:f0iv�vltl� inatnanpnt'j'tsiTd'Qao.'1 ac: v-u �laclgra that sal instrument to be'.the rree rind volitIItary act'and_: ee deed of:said C0,7w- ' rii ' !;?o > t:Ul WK l; !Lwl rurrooea tho3rain frencionea, ana-aacn•on nath Anxr-mo Tartu w(:i r: rl: .In1i't..r•.' 11• r•Y •r':rl.•• r. ?_,I !Llr31-SU:'yllt, un:l that-. :.1 i1 aoml ccri,17•'2to .1:= [ ..� 4JRa O.0 uAld CO-j»Tntln:l. j IN HITN U'3�; WHEREOF, I tam hereunto set arty hand_and atSixed my offici-el. seal_tt+e dray. } and ;Tear itove writtan. •]( tiatary jLtblle la•nrial•So2'.t�-Qt.rLe:ot•' ,.�. a. :G:unarlot:„:•roaldl;� in;�'G....FYf�}.. ... �ti _ ,. '-'• "'of lDR[i T-11M U r. 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I .i���:°'^rota•%�"���:Sv � ` �17 �' 1 :s 7 i L1 yl� PICO IcI4-e, ` t fn Ckk-17 (A Awe.e/Y4 j p (tj 09-per SSG C, �) Sol�'� n'�.n j a'ar w� � 9�'�'`''' d a C.e• s 6,rri�` ► 1rtx- ¢ou-S r/rr iq,�'' t► ,�ti ►, hs TI-e-e5 � � s Fill I , '�� h� ?,OLr yz (OAA rvik L'A 4f G. Y, ln�t/ ( tv � r��C6�✓ G�'�tn.wc ��� oaf-...��.t � .�,`,,,G,a"�� ----- �• -- - __--- JE -- 8 - - -- W A 7 FAX Er 10 7� 8, li,,� ,,�,✓�t� vVv� - (,--rT IM,�.�'.� �T w'7�.r,�.c.�, •(�,�;✓�q fit. ,t t�'v�/ 2 2 - 6 - 9s 02/03/1998 13: 48 20b-/28-5608 KAIU & WAKKLN 1N". r-"Ur- r�l t ���^•V I ` WUREN 2003 Western Avenue CM 555MarketPlaceOne Tel: 2061448-4200 INCORPORATEDSeattle, Washington 98121 Fax.-2061728-5608 TRANSMITT.A.L FORM To: t n Datr: Of: No. of pages (including cover skeet): Via: Mail ❑ Fax�n Fax Number: Courier ❑ From- _ FedFx ❑ Contests• _ _Y�. ri Comments: Enclosures: cc: Kaw�W�ceo-11/13/96 C:\fo�4tr.nuo4*.ax=t1 do- 01/0J/1139H 13:48 206-/28-bbIJ8 KA I U & WAKKEN 1NU. rHut FEB-03-090 !0:34 FROM US COE—REGULATORY H-4U ,H lu s DEPARTMENT OF THE ARMY SEA"LE DISTRICT. Cover$ Or LrNCjNKU&RS P.O. BOX '3753 S[ATTLE,w^*Pw4croN 1e1Z4-ZZSS Ar.�wrwr.p� Regulatory Branch Date: Number of Pages Faxed (including this page): `r To: C FAX ber: From: Regulatory Branch Phone Number: (206) 764-3495 FAX Number: (206) 764-6602 CoAINffiNTS: 02/03/1998 13: 48 206-728-5608 KATU & WAKKEN INC. rHUt e� FEB--03-199a 10:34 FROM US COE-REGULATORY BRANCH lU DEPARTMENT OF THE ARMY MATTLL DISTRICT. CORPS Of ENQIMCLRS pox 3755 SLAYYLIt,WASH IN6TON 98194-sa926 Requlatozy Branch FEB —3 �ggg Mr. Bryce A. Ecklein Kato & warren, Inc. 2003 Western Avenue 555 Market Place One Seattle, Washington, 98121 Reference: 97-4-01329 Dear Mr. Ecklein: Renton, City of The U.S . Arny corps of Engineers (Corps) has completed our review of the compensatory mitigation information and your subsequent letter , dated January 12, 1998, relating to wetland impacts associated with the city of Renton's proposal to extend Oakesd le Avenue located at the city of Renton, Washington. We have several outstanding concerns about the compensatory mitigation component of this project which require resolution before we can proceed to a permit decision. our concerns and commants are outlined below: jl • The compensatory mitigation plan should include clearly outlined goals and objectives, performance otandards (including % cover at years 2, 3, 5, 7, and 10) , monitoring, maintenance, and contingencies. Contingencies need to be developed up front, not "if" a problen occurs down the line. Presented for our review on the mitigation component of this project is two pages of narrative, vne page of a plant list, and two drawings. We strongly reconmend that you prepare a bound compensatory mitigation plan which includes the function and value ttsseosment of the wetlands being impacted, which functions you are trying to replace and how that will be achieved at the mitigation site. The plan should also include information about existing site conditions (see below) . It is extremely difficult to relate impacts to compensatory mitigation and the ecological validity of the mitigation plan when the information for assessing these components for our permit derision are either not available or scattered in the DEIS, the BIS, letters, Public Notice, etc . Given the sensitive nature of this b3/lyyti 13:48 10b-/28-bbUH KA I U & WAKKLN INN. r ,gut e v FEB-03-19M 10'35 FROM US COE-REGULATORY BRANCH TO '37205600 P.03 project, compilation of all the pertinent information in one volume (the Final Mitigation Plan) for our review and future use is imperative. ,� • The following information about existing condi;.ivns at the proposed mitigation site is required. How big is the entire parcel? Is the entire parcel owned by the city of Renton? What is the acreage, location, and type9 of jurisdictional wetlands which exist there now? We observed jurisdictional wetlands on the mitigation site, dominated by reed canarygrass (RCG) during our site visit of June 12, 1997 : however, we need data pertaining to the existing hydrology, vegetation, And soils, both in the upland and in the wetland areas of the proposed mitigation site. The information provided is not enough to ascertain the probability of success for the proposed compensatory mitigation plan. .4 Your estimates for cubic yards (cy) to be excavated for the mitigation site appear too low. For the northern area our estimates of excavation needed would be about 10, 000 cy of material (averaging 4 feet of material to be excavated from an area approximately 55, 000 square feet) , while you indicate that it is approximately 5,500 cy of excavation. Our estimate (based on the graphics presented) for the Southern area was also about double your estimate for excavation volume. Please clarify. (, Section C-C ha$ tha existing and proposed grades labeled incorrectly. )where will the excavated material be disposed of74� What are the hydrological parameters at elevations 10 . 5 through 15 Peet .e)What is the existing hydrology at elevation 14 feet for the existing wetland? . The drawings are riot clear how the stormwater is retained and separated from the wetland at the mitgation site during times of heavy rainfall and/or flood conditions. The cross-sections indicate very little separation between the stormwater facilities and the mitigation wetlands_ what year flood events are the stormwater detention basins designed fort Ts road runoff being considered as a source of hydrology for the mitigation 8�.te4 The Corps typically requires a 10-year monitoring plan for componsatory mitigation projects which have torested wetlands as part of their component. Since that appears to be a goal of the mitigation, we will require monitoring and subsequent reports in years 1, 2, 3, 5, 7, and 10 . If after year 5 additional monitoring is not warranted then we will not require it . To clarify thiG we will include a special condition in the Corps permit which will allvw monitoring to be terminated, if appropriate, after year five. 2 02/03/1990 13:48 206-728-5608 KAIU & WAKKLN iNU. rHUt e� • FE8-03-195"d 10:36 FROM US c0E-REGULATOW BRANCH TO 97205609 P•04 7 • The mitigation information does not clearly state anywhere that mitigation monitoring reports will be submitted to the Seattle District Corps. It only states that the monitoring reports will be submitted to the city of Renton. • A two-year maintenance program is not enough, especially given the amount of RCG at the mitigation site and the requirement to keep invasivQ species to no more than 10% aerial cover for the site. What strategies do you plan on employing to control RCG at the site? -7) As you are aware, the wetland mitigation site must be recorded with the Registrar of Deeds or other appropriate official charged with the responsibility for maintaining records to or interest in real property. Proof of this documentation must be provided to the Seattle District Corps prior to permit issuance. This requirement is to ensure that the wetlands created, restored, or enhanced as compensatory mitigation will not be the subject of future individual or general Corps permit application for fill or other development . This iz of utmost importance for this particular permit action_ �� • The mitigation information states that tho mitigation ratio of 2 :1 will designate 0 .62 acres of the total 2 . 05 acres of created wetlands as mitigation for Phase 1, and that the remainder of the 2.05 acres would be applied to other projects within the city of Renton's juriadiction. Please be aware that if the city of Renton wishes to utilize the -excess' mitigation for a project which. requires a Corps permit there are no guarantees that we could apply the excess mitigation acreage to a particular project. FIowevor, many projects require local mitigation when the corps does not require any and the use of the site -in that vein may serve the City well , we would be required to review the applicability of the extra mitigation for a project in the same watershed on a case- by-case basis. In addition, we have not determined that 2 :1 mitigation is appropriate in this case (i .e. we usually require a 3:1 ratio for enhancement, not 2 :1) . 9� • Please .include a breakdown of tht mitigation acreage components. For example hvw much wetland (in square footage or acreage) will be enhanced, created, and restored at the proposed mitigation site? it appears that parts of the mitigation include steep sides contributing to a `bathtub" affect, which is highly discouraged in restoration and creation of wetlands_ This -bathtub- affect is not considered an appropriate mitigation design_ Scalloping the edges mere (especially in the southern area) and lessening the slopes to create more edge is required_ 3 IJ2/113/1`J`Jti 13: 48 2Ub-12B-Sb0b KA I U c4 rHUu- uo FEB-07-1995 10:36 FROM US CDE-REGULP1UKY J1----- . �/� • You should also consider phase planting of sun sensitive tree species such as red cod88r and red osier dogwood, as they have experienced heavy mortality if planted before some shading is established in other projects . it i6 our understanding that you are currently working with the Washington State Department of Ecology to resolve their concerns about tha cotVensatory mitigation plan. Z apologize for not providing these comments sooner, but we are short staffed with an extremely heavy workload right now- rf you have any Questions concerning this letter, please call the undersigned at {206) 764-6903 . Mr. .rim Green remains the Corps project manager for this project . Sincerely, Gail teT��:w: Envirost Applic Section Copy Furnished: Greg zirmarman city of Renton 200 Mill Avenue S. Renton, WA 98055 4 TOTAL P.0< PLANNING/ BUILDING/ PUBLIC WORKS DEPARTMENT MUNICIPAL BUILDING 200 MILL AVE. SO. RENTON, WASH. 98055 ES DUTILITY SYSTEMS DIVISION - 235-2631 �7 TRANSPORTATION SYSTEMS DIVISION - 235-2620 T0: DATE: JOB NO. : RE: ATTN: GENTLEMEN: WE ARE SENDING YOU ❑ ATTACHED ❑ UNDER SEPARATE COVER VIA THE FOLLOWING ITEMS: ❑ SHOP DRAWINGS ❑ PRINTS ❑ REPRODUCIBLE PLANS ❑ SPECIFICATIONS ❑ COPY OF LETTER ❑ COPIES DATE NUMBER DESCRIPTION AND REMARKS iN w THESE ARE TRANSMITTED AS CHECKED BELOW: o FOR APPROVAL ❑ APPROVED AS SUBMITTED ❑ RESUBMIT COPIES FOR APPROVAL k3 FOR YOUR USE ❑ APPROVED AS NOTED ❑ SUBMIT COPIES FOR DISTRIBUTION j„AS REQUESTED ❑ RETURNED FOR CORRECTIONS ❑ RETURN CORRECTED PRINTS �. FOR REVIEW AND COMMENT ❑ ❑ PRINTS RETURNED AFTER LOAN TO US COPIES TO: SIGNED TITLE IF ENCLOSURES ARE NOT AS NOTED, KINDLY NOTIFY US AT ONCE • oaf,FTA T,, Of O 4 r .a < = S P' >ti Doti Sate of Washington DEPkRTMENT OF FISH AND WILDLIFE Mailing Address: 600 Capitol V%ay N•Olympia,WA 98501-1091 •(360)902-2200, TDD(360)902-2207J Main Office Location: Natt al Resources Building• 1111 Washington Street SE•Olympia,WA j^998 January 9, 1998 j�. 0 Mr . Bryce Ecklein e ng�NrON Kato and Warren kept 2003 Western Avenue Seattle, Washington `,, 121 SUBJECT: DRAFT HYDRILULIC POJECT PROVISIONS FOR OAKSDALE BRIDGE AND CHANNEL WORK ON SPRINGBROOK CREEK TRIBUTARY TO BLACK RIVER. Dear Mr . Ecklien : Attached are the provisions that may appear on the HPA for this project . There is a possibily that they may change and final approval of the provisions and the HPA is done by Olympia staff . If you have any questions please call me at ( 425 ) 391-4365 . Sincerely, Philip Schneider Habitat Biologist cc : Scott Woodbury Ted Muller - WDF1? �m e 1 . ADDITIONAL TIMING LIMITATIONS : Work below the ordinary high w water line shall c)nly occur between June 15, 1998 and October 15, 1998 . Revegetation per Provision 12 shall be completed no later than May 1, 1999, and shall be monitored through October 15, 2002 . 2 . NOTIFICATION REQUIREt:E;NT: The permittee or contractor shall notify the Area Habitat Biologist listed below, by fax at ( 425) 391-6583, of the project start date . Notification shall be received by the Area Habitat Biologist at least three working days prior to the start of construction activities . The notification shall include the permittee 's name, project location, starting date for work, and the control number for this Hydraulic Project Approval . 3 . Work shall be accomplished per plans and specifications entitled, "--" d_,ted ..—, and submitted to Washington Department of Fish and Wildlife, except as modified by this Hydraulic Project Approval . These plans reflect design criteria per Chapter 220-110 VAC. A copy of these plans shall be available on site during construction . 4 . Excavation for and placement of the foundation and superstructure shall ie outside the ordinary high water line . 5 . The bridge strucrure shall be placed in a manner to minimize damage to the streambed and banks . 6 . The bridge shall be constructed to pass the 100-year peak flow with consideration of debris likely to be encountered . 7 . Wastewater from project activities and water removed from within the work area shall be routed to an area landward of the ordinary high water line to allow removal of fine sediment and other contaminants prior to being discharged to state waters . 8 . Structures containing, concrete shall be sufficiently cured prior to contact with water to avoid leaching . Fresh concrete shall not be allowed to cone into contact with state waters . 9 . Abutments, piers, piling, sills, approach fills, etc . , shall not constrict the fl,:)w ar,d cause any appreciable increase (not to exceed 0 . 2 feeu— ) in backwater elevation (calculated at the 100- year flood ) oi c`..annel.-wide scour, and shall be aligned to cause the least effect: on the hydraulics of the stream. 10 . Bank sloping shall be -compllshed in a manner that avoids release of overburden i:iaterial into the water . Overburden material resulting fr.ori the project shall be deposited so it will not reenter t—ie water . 11 . The work area shall be isolated from the wetted perimeter by sandbags or similar mechanism as needed to prevent sediments from entering the stream . 12 . Alteration or disturbance of the bank and bank vegetation shall be limited to that necessary to construct the project . Within seven calendar days of project completion, all disturbed areas shall be protected from erosion using vegetation or other means . Within one year of project completion, the banks shall be revegetated with native jr other approved woody species . Vegetative cuttings shall be planted at a maximum interval of three feet ( on center ) and maintained as necessary for three years to ensure 80 percent survival . 13 . Fish habitat components such as logs, stumps, and/or large boulders are required as; part of the bank protection project to mitigate project ir,apact:s . These fish habitat components shall be installed to withstand 100-year peak flows . 14 . The fish habitat 1()(3 structures shall be of fir, cedar, or other approved coniferous, species . 15 . The fish habitat structures shall be placed so that they are within the low flow channel . 16 . Erosion control methods shall be used to prevent silt-laden water from entering the :.stream . These may include, but are not limited to, straw bales, filter fabric, temporary sediment ponds, check dams of pea gravel-filled burlap bags or other material, and/or immediate mulching of exposed areas . 17 . All waste material such as construction debris, silt, excess dirt or overburden resulting from this project shall be deposited above the limits of flood water in an approved upland disposal site . , 18 . If high flow conditions that may cause siltation are encountered during this project, work shall stop until the flow subsides . 19 . Extreme care shall be titken to ensure that no petroleum products, hydraulic- f1u..(1, fresh cement, sediments, sediment- laden water, chemicals, or any other toxic or deleterious materials are allowed to enter or leach into the stream. 01/12/1998 l b:b/ Lbb-12b-5bHb rl"l u 61 W"Mr\u1 114-. -•� KATO& 2003 western Avenue ,_ ,, ► WARREN 555 Market Place One -� � r Tel-2061448-4200 INCORPORATED Seattle, Washington 98121 ti Far. 2061728-5608 TRA1,; NSMrTAL FORM � v apt, To: , _ Date: Z 9 8 of. No_ of pages (including cover sheet): 7- Via- Mail ❑ Fax Fax Number: Courier ❑ From: FedEx ❑ Contents: - �� CPA Comments: � Enclosures: cc_ K.W&W—o-11/13/96 C Afameltiaw=ttir."w 1.d— 01/12/1998 16: 07 206-728-5608 KAIU & wAKNLN iNU. IHVL UL KATo& 2003 Western Avenue WARRENS555 Market Place One Tel 206/728-5608 I N C 0 R P 0 R AT E A Seattle, Wexhin8twt 98121 Fax' 06/ 8 0 Mr. James Green, Project Manager 1112/98 Regulatory Branch Seattle District, Corps of Engineers P.O_ Box 3755 Seattle, Washington 98124-2255 RE: Public Notice 97-4-01329, EPA Letter January 7, 1998 Dear Mr. Green, We have reviewed the above referenced letter and have discussed the contents with representatives of the City of Renton. The following are responses to each of the four cited special conditions- ❑ Regarding use of a replacement ratio of 2:1 for impact to created mitigation wetlands versus the City of Renton 1.5:1 ratio for this class of wetland, we accept this condition and will designate .62 acres of our total 2.05 acres of new created wetlands as mitigation for Phase I impacts. In accepting the 2-1 ratio for this phase of the project,the City acknowledges the special nature of the wetlands being impacted. ❑ Regarding expectation of 800/6 mitiimum vegetative cover by end of the monitoring period, the City has already specified this as the expected cover percentage as part of their revised Phase I Public Notice(see Sheet 13 of 1.1/24/97 Public Notice) and accepts this as a special condition. ❑ Regarding the designation of a conservation easement for project wetlands, the City has already specified this in their letter to the Corps dated 11/20/97 regarding various issue raised by EPA and USFWS and accepts this as a special condition. ❑ Regarding the limitation of non-native plant species to 101/6 or less in the mitigation site, the City accepts this performance criteria as a special condition. We believe this addresses the issues raised in EPA's letter. Should anything else require clarification, do not hesitate to call. Your continued attention to timely resolution of matters related to this permit has been most appreciated. Sincerely, Bryce A. Ecklein cc: Steven Roy, EPA Nancy Brennan-Dubbs, USk WS Lin Wilson, City of Renton Marc Boule, Shapiro CITY OF RENTON •,LL Planning/Building/Public Works Department J e Tanner,Mayor Gregg Zimmerman P.E.,Administrator January 12, 1998 06 c2 Department of Ecology \ ? ,�`3 �1 Environmental Coordination Section— SEA Program PO Box 47600 Olympia, WA 98504-7600 Attn.: Tom Luster Subject: Oakesdale Avenue Extension Project- SW 16th Street to SW 27th Street Section 404/401 Permitting Dear Mr. Luster: This '.--tter is to confirm the discussions between you and Dick Warren, of our consultants Kato & Warren, relative to the Section 401 certification you must make as part of the City's requested Sec- tion 404 permit. Let me begin by saying that the City of Renton is strongly committed to improving stormwater quality throughout the City. As you know, we have a very pro-active Surface Water Utility funded by stormwater utility fees. All of our transportation projects must meet the requirements of the Sur- face Water Utility. For the Oakesdale Avenue project, we have gone well beyond County and State design standards and even exceeded our own City standards. The treatment system serving the project south of Springbrook Creek is designed to serve the current Phase 1 of the project and much of Phase 2. The wet ponds and constructed wetlands are oversized by more than 50 percent as a special protection to the new mitigation wetlands and the existing wetlands between the mitigation wetlands and Spring- brook Creek. In your consideration of the Section 401 certification, we would ask that you consider the following: • The Boeing Company's development of the former Longacres race-course as an office park ifi- cludes an extensive surface water detention and treatment system, involving created wetlands. The system is designed well beyond current treatment standards, and has greatly reduced the amount of pollutants that enter Springbrook Creek compared to the former activity. • Except for the two diversions listed below, the runoff entering the wet ponds consists only of that from the Oakesdale Avenue right-of-way. All of the runoff from Boeing's development is 200 Mill Avenue South - Renton, Washington 98055 ®This paper contains 50%recycled material,20%post consumer Tom Luster, WDOE January 12, 1998 Page 2 treated separately. Storms larger than a 10-to 25-year event will result in runoff from the proj- ect reaching Springbrook Creek as surface water flows. We anticipate that the smaller, more frequent, storm flows will infiltrate into the ground either in the wet ponds and distribution trench or in the extensive wetlands between the project and the creek. • At the north end of the project, the City has recently constructed a wet vault on the previously untreated storm drain serving 16th Street. This facility will remove pollutants that previously discharged untreated to Springbrook Creek. • We have modified our drainage design, Drawing No. D-3, Sheet 37 of 96, to provide for the in- terception of two existing 12-inch drains originating on the old Longacres property. These drains serve a combined area of less than 3 acres of mixed vegetation with some remnants of roads and structures that will be removed by Boeing at some time in the future. The original design provided that these drains were to have been piped through the roadway project area and the untreated flows would have been conveyed in an existing ditch that eventually discharges to Springbrook Creek. The revised design will route these flows through the roadway project treatment system, which has more than enough capacity to treat these small flows in the north wet pond. This will remove some additional pollutants from the creek. • We are only seeking a Section 404 permit for Phase 1. We will reapply for Phase 2, anc, there may be opportunities to retro-fit other existing drains as part of the Phase 2 work. • We intend to monitor the Oakesdale stormwater/wetland system once Phase 1 is constructed and to use the data from Phase 1 to assist us in the Phase 2 design. We hope that you will see that we are committed to improving water quality in Springbrook Creek and that you will look favorably on our efforts so the Section 401 certification can be issued and the Corps can then issue the Section 404 permit. We would hope to have the permit prior to the first of February so construction can proceed on schedule on the time-sensitive project. Thank you for your consideration. If you need further information, please call our consultants Kato & Warren, Mr. Dick Warren directly, at (206) 448-4200 as time is of the essence. Very truly yours, Wt�vw� Lin Wilson, P.E. Transportation Design Supervisor cc: Dick Warren,Kato&Warren Rick Ford,Boeing Joe Armstrong Scott Woodbury h:\...\lin\oakesdal\luster.doc b1/by/ITJ8 It): 14 lei;, I ", KWU N ,'— y� JAN-09-1999 14:22 (Rt r F.EGUI ATC1F2Y BRANCH if.i `�7«+`1EEdtS N.l9G f UNITED s-I-,;:t ES ENVIRONMENTAL pROTEr,TION AGIENCY REGION 10 1200 Sixth.Avenue Seattle,Washington 118101 Rcply to ATM of: ECO-083 .A 7 Colonel James M_ ltigsby District Engineer . Seattle District, Corps of FIWMcers P.O. Box C-3755 Seattle. Washbwgon. 98124-2251 ATTN: Jim (Awl, Proj� Manager RE. Public Notic:c U7- -01 324 4 Rovised Comments, City ol. Kenton, September 23, 1997 Dear Colonel Rigsby: We have completed an: review of the "Oakcsdale Avenue S.W. Extension Project Wetland Assessment and Mitigation Plan" dated December 1997 for the above mtereneed public notice which proposes tl� cxtead and complete the disjunct portions of Oakesdale Avenue S.W. and provide a:u� to abutting propettY. The Proposed phase 1 project would affect a total of G.31 acre vi wetlands by directly filling Esc: wetlands which were created as mitigation for a previous p oject. Includod in this figure i:: 0.04 acres of wetland impact from shading activities from dging Springbrook Creek. nor the Duwamish Rivet, Renton, Washington. After reviewing the atK—e referenced "Mitigatiou Pla-_' the Environmental Protection Agency (EPA) has the followilag Concerns and comments: EPA is very concerned.that We;1&n& constructed as mitigation for a previous nationwide permit are proposed for filling under this public notice. EPA believes the proposed mitigation of 0.5 acrcs iN inadequate and not consisttcut with :turps policy, letter dated June 24. 1997, :Torn Ann R. Uhrich, which state:; a "highs; ,eplacement ratio is appropriate" for a similar situation. EPA cone -s with ttti: corps of Engineers policy. As a result, EPA requests that the applicant prt-vide a 2:1 replacement ratio rather than a 1.5:1 replacement ratio. Ibib wouid equate to 0.62 acres of crcat.d wetlands rather than the 0.5 acres as propo�wAi by the applicant. The "witigatic)"i plan" fails to identify expected rtliniinum vegetation cover percentages as part of tha monitoring plan. EPA believes 80% minimum vegetation covr - by the end of the monitoring period is reasonable. 1671 Data - - From Nkt[vd On J4cftY�O�P� cA. k -- pho� ' FAX K 01/09/1998 1�): 14 1—, , KWO h w;,� , I I,- JAN-09-1998 14:2.� r'tlt�t i . RFGI II 'i T URY BRANCH TF11- EPA believes that it is appropriate that all wetland& for this project that are created, cnhanW, restored or avoided should be placed iu a permanent cote-ervation easement in perpetuity and recordW With Icing County. Non-native plant Tmies should not exceed 10% of thte mitigation site to ngzt the success c6tena and should be incorporated Ks a perfonnance standard. EPA believes if the AW-c four items arc included as special conditions to the Corps permit, them this project would be oattsistettt with the Clean Water Act Section 404(b)(1) Guidelines. Should you have aqy questions or desire addition&' coord'nation concerning this )Kq&xt,pleasc�ootact Steven Roy of my staff at (206) 553-6221 Sincerely, Fred Weirunam, Acting Manager Aquatic Rcsourccs Ulut cc: Ecology WDF&W NMFS USFWS Muddesboot 'Tribe Apples pjv Department of Ecology (City of Renton) Environmental Coordination Section— SEA Program PO Box 47600 Olympia, WA 98504-7600 Attn: Tom Luster Subject: Oakesdale Avenue Project 404/401 Permitting Dear Mr. Luster: This letter is to confirm the discussions between you and Dick Warren, of our consultants Kato & Warren, relative to the 401 certification you must make as part of the City's requested 404 permit. Let me begin by saying that the City of Renton is strongly committed to improving stormwater quality throughout the City. As you know, we have a very pro-active stormwater department funded by stormwater utility fees. All of our transportation project must meet the requirements of the stormwater department. For the Oakesdale Avenue project, we have gone well beyond County and State design standards and even exceeded our own City standards. The treatment system serving the project south of Springbrook Creek is designed to serve the current Phase 1 of the project and much of Phase 2. The wet ponds and constructed wetlands are oversized by more than 50 percent as a special protection to the new mitigation wetlands and the existing wetlands between the mitigation wetlands and Springbrook Creek. In your consideration of the 401 certification, we would ask that you consider the following: • The Boeing Company wetland treatment system and office park development has greatly reduced the amount of pollutants that enter Springbrook Creek compared to the older Longacres actively. The Boeing system is also designed well beyond current treatment standards. • Except for the two small diversions listed below, only runoff from Oakesdale Avenue will enter the wet ponds. All of Boeing's runoff is treated separately. Consequently, the flows entering the wet ponds are quite small. We anticipate that only storms larger than a 10 to 25 year storm will result in runoff from the project actually reaching Springbrook Creek. All smaller storm flows will infiltrate into the ground either in the wet ponds and distribution trench or in the extensive wetlands between the project and the creek. • At the north end of the project, the City has recently constructed a wet vault on the previously untreated storm drain serving 16th Street. This facility will remove pollutants that previously discharged directly to Springbrook Creek. • We have modified our drainage design, Drawing No. D-3, Sheet 37 of 96,to provide for the interception of two 12-inch drains originating on the old Longacres property. These were to have continued untreated and flow to an existing ditch that eventually discharges to Springbrook Creek. Although this is an exception to the earlier statement, we feel there is more than enough capacity in our system, as stated earlier, to permit us to treat these small flows in the north wet pond. This will remove some additional pollutants from the creek. • We are only seeking a 404 permit for Phase 1. We will reapply for Phase 2, and there are several opportunities to retro-fit existing drains as part of the Phase 2 work. • We intend to monitor the Oakesdale stormwater/wetland system once Phase 1 is constructed and to use the data from Phase 1 to assist us in the Phase 2 design. We hope that you will see that we are committed to improving water quality in Springbrook Creek and will look favorably on our efforts so the 401 certification can be issued and the Corps can then issue the 404 permit. We would hope to have the permit prior to the first of February so construction can proceed on schedule on this time-sensitive project. Thank you for your consideration. If you need further information, please call our consultants Kato & Warren, Mr. Dick Warren directly, at(206) 448-4200 as time is of the essence. Very truly yours, CITY OF RENTON Lin Wilson, P.E. Supervisor, Transportation Systems -Design �3tf 14: lb /Hb r Lb ')tltiii KATo& 2003 Wepem lvrnut WURENJ! Fa 2061728_5608 555.Kanter P(a�t One, f'tu: 206/7Z8-S608 INCORPORATED Seattle, Washington98121 Memo Date: January 2, 1998 To: Lin Wilson From: Bryce Ecklein Re; Oakesdale Avenue SW' Permit Status This is the twenty-fourth status report on progress of the Oakesdale Avenue S.W. "404" Permit submittal. Items of particular note include: 1- We have still not resolved issue with DOE on water quality certification("401")- A second paper was developed by Mr. Gary Minton and forwarded to DOE on December 30, 1997. It was intended to provide additional support to concept of treatment and discharge. No response yet from DOT. Nfiinton submittals forwarded under separate cover. 2. Jim Green of the Corps has heard from Tom Luster (DOE) regarding the water quality issue. Jim indicated that the Corps would probably be holding the"404" permit until there is acknowledgment from the DOE that the matter is settled. 3. A final adjustment is being made by Shapiro to in-stream log anchoring system at request of Phil Schneider (WSDF&W). This will result in an addendum but should be a lower cost approach to that currently in the bid set. �12/17/1997 13: 33 206-728-5608 KATO & WARREN INC. PAGE 01 KATO& WARRENZ 2003 Weslern.4venue S55 Market Place One Tel.•2061448-4200 INCORPORATEDSeattle, Washington 98121 Fax:20&728-5608 TRANSMITTAL FARM To: C,�'► Uj 1(!K Date: I z- I 1 Of No. of pages(including cover shed): Via: Mail ❑ Fa,"21 Fax Number: 42S 4 Courier ❑ From: FedEx ❑ Contents: � -b o y DES 1 o o" Comments: � Ne1�n�a �lLn•�n.." m, a �. ��"'^�- 1��► T ) • �p /�a..�.�v►�¢. ��� Enclosures: cc: Kato R Wuren-11/13/96 C:\fo®a4raoaontltran t1 dog 12/17/1997 13: 33 206-728-5608 KATO & WARREN INC. PAGE 02 Application for General Permit to ❑ Change of Information Discharge Stormwater Associated with W444119195 1TATl Construction Activity Permit t S03 - v— I C`I 1 TC T (Notice of Intent) (Please print in ink or type) Please Read NOI Instructions Before Filling Out This Form 1. Contact Person If. owner/Representative of Site (All c dence will be mailed here) Contact Name Phone No. Owner's Name Phone No. ,�, 4 Lin WilsonComwly 425) 277-6223 Company Name City of Renton Mailing Address Mailing Address 200 Mill Avenue S. CitygMe Zlp + 4 City State Zip + 4 WA 98055 Renton Ill. Site Location/Address IV. Billing_ Address Site Name Contact Name Phone No. Oakesdale Avenue S.W. Extension Lin Wilson (425) 277-6223 Street Address tar Location Description) Company Name Oakes"e Ave_ S.W_ at S.W. 16th City of Renton City (or nearest city) Zip + 4 Mailing Address Renton °�8055 200 Mill Avenue S. County City State Zip + 4 King P Renton WA 98055 Provide legal description if no address for site (attach separate sheet it necessary) V. Receiving Water information (check__ that a v) A. Does your construction site disci*rge M rTnwater to: 1. ❑ Storm drain system - Owner of storm drain system (name) 2.$1 Indirectly or directly to surface waters (e.g., river, lake.(cree ary, ocean, eland) 3. ❑ Directly to ground waters of Washington state. ❑ Pry Well ❑ Grainfield ❑ Other B. Name(s) of receiving water(s) Spring brook Creek and associated wetlands Initial discharge is to an unnamed receiving water? ❑ Yes ❑ No VI. Construction Activity Information 1. Total area to be disturbed Acres 2. Projected construction startup March / 1998 projected completion date October / 19� 98 mortth Vdar magi your Vll. Stormwater Pollution Prevention Plan (SWPPP Has a Stormwater pollution prevention plan been developed? ❑ Yes � No If NO, will a plan be developed prior to the start of construction? M Yes ❑ No Ecology must be notified that a SWPPP will be developed prior to the start of consvuction by checking the appropriate boxes above or by sending a follow-up letter to Ecology. A stormwater pollution prevention plan must be develQ ed tint to ttie start of C nstruction. ECY 020-85 tRev. 91971 /Continued on Back Paael (Apoendix 1) '12/17/1997 13: 33 206-728-5600 KATO & WARREN INC. PAGE 03 wi. State Environmental Policy Act (SEPA) If the SEPA process has not been completed at the time of NOi submitul, a follow-up letter must be sent to Ecology with the following information prior to Ecology granting permit coverage. Has a SEPA review been completed? M Yes ❑ No ❑ Exempt Type of SEPA document ❑ DNS M Final EIS Agency Issuing DNS, lint EIS, or Exemption City of Renton _; Date July 1997 Are you aware of an appeal of the adequancy of the SEPA document? ❑ Yes No (If yes, please attach explanatory letter.) SEPA sments must be compfled with prior to permit Issuance. IX. Public Notice The public notice must he published at least g=each week for 2 consecutive weeks, In a si(a1$newspaper which has general circulation In the county In which the construction is to take place. See the NOl instructions for the public notice language requirements. Permit coverage will not be granted sooner than 31 does after the date of the second public notica. Note: ddis NOi mint be submitted to Eulogy an or before the date of the 1 7t public natk,rr.. Provide the exact dates (mm/dd/yy) that the first and second public notices will appear in the newspaper: Date of the first public notice 7-0 I ej�_ : Date of second public notice Name of the newspaper which will run the public notices 500t�n LA ,�� � Ecology Is no longer requiring the submittal of the affidavit of publication. A copy of the notice to be ubtlahed must be rovided Wang with the NOL X. Regulatory Status A. ❑ NPDES Permit (e_p_, industrial swrmwater) C. 13 Air Notice of Construction, Permit, or Order Permit No_ Agency B. ❑ State Westo Discharge Permit D. ❑ State/USEPA Hazardous Waste ID No. Permit No_ XI. Cartification of Permittee(s) I c nyy wuur powity qr kw draw tkb dumne+t and aU anoa w n"wens PnPwvd wufff nq&uum mr a"n aaaardawe sWsh a systae dWp+d to asswe that grad Pw3mrsdp►gwfy Sathff and evaluate the LVbww m.rxbmiffad Bared m my in�of tht paean or p'asou WW.Manage ti-syMem. or tkars peranrcr&F=dy>,aspondbie for gam$t11e !>dWmaaot. Ahe hoxm faR.arbnatud is, to the best of my bw%jc ,w and belief tmoe; 4 and cmoete_ I on amwe Am tltrr+e a,sr st�icmrt panahia Jjor s�ndttla8l��for�a� '�the ���awd��b1O�s �sdoaiow:_ T OwneNRepresentstive's Printed Name Tide Owner/Reoresentative's Signature Date Sian and return this document to the following address; for questions call (360) 407-6437 or 407-6436: Washington Department of Ecology Warter Quality Program Stormwater Unit PO Box 47696 Olympia, WA 98504-7696 The Deparbnenr of Ecology is an equal opportunity agency and does not discriminate on the basis of race, creed, color, dlsabilfty, ape, religian, national origin, sex, marital status, disabled veteran's status, VI-emam Era veterans status, or sexual orientation. P.O.Box 3707 (� Seattle,WA 98124-2207 � October 30, 1996 � i 6-8W 1H-LP-97-029 Mr. Jack Gossett C'j�• 199? Department of the Army Seattle District, Corps of Engineers PO Box 3755 g rh7g O pO/y Seattle, WA 98124-2255 BOE//VG Reference: Boeing Longacres Office Park Campus Subject: Jurisdiction of Wetland "E" Dear Mr. Gossett: On June 12, 1997, Jack Kennedy and Gail Terzi of the Corps of Engineers visited the Boeing Longacres Site, located in Renton, Washington, for the purpose of reviewing and delineating wetlands. Also in attendance were Lin Wilson, Scott Woodbury and Mark Pywell from the City of Renton. The City of Renton was at that time preparing the design for the construction of Oakesdale Avenue SW extension. The route for the road extension crosses the Boeing property, and would impact a previously delineated wetland. Mr. Kennedy and Ms. Terzi reviewed the status of a previously delineated wetland, known as wetland "E",on the site. The location of wetland E is depicted in the attached plan. Mr. Kennedy and Ms. Terzi both concluded that wetland E is "closed depression" and that the necessary conditions were not present to qualify as a wetland. This conclusion was partially based on COE Standard Operating Procedure 96-1. The City of Renton concurred with Mr. Kennedy's and Ms. Terzi's determination, concluding that wetland E was also not a wetland for purposes of the city's wetland ordinance. As a result of the June 12th conformation visit, the design of Oakesdale Avenue SW has proceeded based on the understanding that neither the COE nor the City of Renton were exerting jurisdiction over wetland E. Furthermore, The Boeing Company recently completed site design for a child care center in the vicinity of wetland E. Consistent with the conclusions reached by the COE and the City at the June 12"confirmation visit, wetland E was not considered a wetland for the purposes of child care center design. At the June 12'confirmation visit,Ms. Terzi indicated a letter would be sent to document the COE's decision. I am not in receipt of such a letter, and by way of this letter wanted to inform you of the direction we are taking regarding this issue. If there are questions or comments regarding this information, please do not hesitate to call me on(425)477-0059. Sincerely, BOE//VG ' Lori Pitzer Longacres Office Park (425)477-0059; MS 20-30 cc: Jack Kennedy US Army Corps of Engineers Gail Terzi US Army Corps of Engineers Mark Pywell City of Renton Mark Boule Shapiro and Associates Jim Nuerenberg The Boeing Company Rick Ford The Boeing Company r i CITY OF RENTON D I PLANNINGBUILDING/PUBLIC WORKS MEMORANDUM '' Dic"_C 11997 DATE: November 26, 1997 CITY OF RENTON Engineering Dept, TO: Lin Wilson FROM: Gregg Zimmerman ti Y SUBJECT: Oakesdale Ave., Larry Warren memo I have attached the memo I received from Larry Warren regarding the need to perform a wetlands alternative analysis for Oakesdale Ave. Phase IL Larry mentions the concern about budgeting for this effort. It sounds like this alternatives analysis for Phase II does not need to be done right now. If it can be done later, it can join the long list of Phase II project expenses for which we have not yet identified funding. If it has to be done earlier, in conjunction with Phase I, we will have to find funding somewhere. Hopefully this is not the case. cc: Sandra Meyer Ron Straka Lee Haro Scott Woodbury I1AW W60D0T'\MEM0.DO'I\bh e � CITY OF RENTON .•LL Office of the City Attorney Jesse Tanner,Mayor Lawrence J.Warren MEMORANDUMR3 Q; L .Iilil NOV 2 5 1997 iJ To: Gregg Zimmerman PUBLIC WORKS TY OF TO N. From: Lawrence J. Warren, City Attorney Date: November 24, 1997 Subject: Oakesdale Along with representatives from Boeing and the City, I met with representatives of EPA and Federal Fish and Wildlife about the Phase 2 mitigation for Oakesdale. As you undoubtedly know, EPA and Federal Fish and Wildlife complained about the proposed use, by the City, of a liner in the replacement wetlands for wetlands that would be filled in Phase 2. In response to the letter requests by EPA and Federal Fish and Wildlife, the City analyzed its available wetlands and determined that there was another potential mitigation site, adjacent to Springbrook Creek, that would not need a liner. Both EPA and Federal Fish and Wildlife appeared to be happy with this mitigation site. However, the City will need to prepare and present hydrological and soils data concerning that site. The Corps of Engineers has indicated that if the City plans to shift its mitigation site from its proposed site to this new creekside site, that the Corps will have to issue a new letter soliciting comments. Since reissuing the comment letter would delay issuance of the 404 permit, it was decided to ask for the permit for Phase 1 which we all anticipate the Corps is ready to grant. The Corps, at that point, may close our permit application and require us to reapply for Phase 2. Alternatively, it may keep the file open for a period of time awaiting further data from the City. In either event the City needs to generate the necessary hydrological and geotechnical informatior necessary to obtain approval of the creekside site as the Phase 2 mitigation site. If the Phase 2 permit is separated from the Phase 1 permit, then a new application will probably be necessary and needs to stand on its own. In order to justify the 404 permit, in either event, we need to do an alternatives analysis. Because of the EPA and Federal Fish and Wildlife letters, an alternatives analysis was prepared by Marc Boule of Shapiro and Associates for submittal to the Corps concerning Phase 1. 1 would suggest that a similar alternatives analysis should be prepared by Shapiro and Associates for Phase 2 whether or not it is under the current permit application or under a later permit application. Post Office Box 626 - 100 S. 2nd Street - Renton, Washington 98057 - (425)255-8678 Gregg Zimmerman 11/24/97 Page 2 The reason for my letter is to forewarn you that a budget item may be necessary for doing the hydrological and geotechnical work and for the drafting of the alternatives analysis and permit application for Phase 2 of Oakesdale. The exact timing of this work is uncertain at this time, because we are not sure of the Corps' reaction to the information provided to them under the present unified permit application. I have spoken briefly to the Mayor about this topic. If this going to present any sort of a funding issue for you, we need to start addressing the issue now. If you have any follow-up questions please let me know. C-`V7 Lawrence J. W ren LJW:as. cc: Mayor Jesse Tanner Jay Covington Sandra Meyer Lin Wilson Scott Woodbury A8:135.69. CITY OF RENTON � PLANNING/BUILDING/PUBLIC WORKS `r� MEMORANDUM �: L3 1 NO ! 2 5 1997 DATE: November 25, 1997 TO: Bob Mahn, Joe Armstrong, Mark Pywell, Scott Woodbury FROM: Lin Wilson SUBJECT: Oakesdale Avenue Project SWPPP (Stormwater Pollution Prevention Plan) I have corresponded with Linda Matlock of WDOE (360) 407-6437, via voice mail regarding the need for the Oakesdale project to have a SWPPP and go through the 38-day process to obtain a stormwater general permit for construction activities. Ecology's proposal, mandated by the Pollution Control Hearings Board, was to extend the SWPPP and permit process to municipalities with populations under 100,000, effective No- vember 21, 1997. Linda informed me that, as a result of representations by the Association of Cities, the comment period has been extended until December 18, 1997, and that the permit requirement, if adopted, would become effective January 9, 1998. The permit process involves placing an advertisement in the newspaper on two occasions a week apart, then allowing DOE 31 days to issue the permit. For Oakesdale's March con- struction start, this gives a drop-dead date in mid-January for filing the application and pub- lishing the initial advertisement. I left a voice mail message for Linda requesting a copy of the permit application form and instructions. When I receive them, I will share them with you and we can determine whether the content overlaps that of the NPDES process, and can plan our actions accordingly. cc: Bryce Ecklein(Kato&Warren) Rick Ford(Boeing) CITY OF RENTON ••� Office of the City Attorney Jesse Tanner,Mayor Lawrence J. Warren MEMORANDUM 2 51997 To: Greggimmerman C1ITY .CF ,F;ENTON gg En iMt Bring Dept. From: Lawrence J. Warren, City Attorney Date: November 24, 1997 Subject: Oakesdale Along with representatives from Boeing and the City, I met with representatives of EPA and Federal Fish and Wildlife about the Phase 2 mitigation for Oakesdale. As you undoubtedly know, EPA and Federal Fish and Wildlife complained about the proposed use, by the City, of a liner in the replacement wetlands for wetlands that would be filled in Phase 2. In response to the letter requests by EPA and Federal Fish and Wildlife, the City analyzed its available wetlands and determined that there was another potential mitigation site, adjacent to Springbrook Creek, that would not need a liner. Both EPA and Federal Fish and Wildlife appeared to be happy with this mitigation site. However, the City will need to prepare and present hydrological and soils data concerning that site. The Corps of Engineers has indicated that if the City plans to shift its mitigation site from its proposed site to this new creekside site, that the Corps will have to issue a new letter soliciting comments. Since reissuing the comment letter would delay issuance of the 404 permit, it was decided to ask for the permit for Phase 1 which we all anticipate the Corps is ready to grant. The Corps, at that point, may close our permit application and require us to reapply for Phase 2. Alternatively, it may keep the file open for a period of time awaiting further data from the City. In either event the City needs to generate the necessary hydrological and geotechnical informatior necessary to obtain approval of the creekside site as the Phase 2 mitigation site. If the Phase 2 permit is separated from the Phase 1 permit, then a new application will probably be necessary and needs to stand on its own. In order to justify the 404 permit, in either event, we need to do an alternatives analysis. Because of the EPA and Federal Fish and Wildlife letters, an alternatives analysis was prepared by Marc Boule of Shapiro and Associates for submittal to the Corps concerning Phase 1. I would suggest that a similar alternatives analysis should be prepared by Shapiro and Associates for Phase 2 whether or not it is under the current permit application or under a later permit application. Post Office Box 626 - 100 S. 2nd Street - Renton, Washington 98057 - (425)255-8678 Gregg Zimmerman 11/24/97 Page 2 The reason for my letter is to forewarn you that a budget item may be necessary for doing the hydrological and geotechnical work and for the drafting of the alternatives analysis and permit application for Phase 2 of Oakesdale. The exact timing of this work is uncertain at this time, because we are not sure of the Corps' reaction to the information provided to them under the present unified permit application. I have spoken briefly to the Mayor about this topic. If this going to present any sort of a funding issue for you, we need to start addressing the issue now. If you have any follow-up questions please let me know. i Lawrence J. W en LJW:as cc: Mayor Jesse Tanner Jay Covingtonft Sandra Meyer �m Wilson i/Scott Woodbury A8:135.69. J • R410 CITY OF RENTON Planning/Building/Public Works Department J e Tanner,Mayor Gregg Zimmerman P.E.,Administrator 2P, November 20, 1997 tTI 6.4 NOV 211997 Seattle District, Corps of Engineers P.O. Box C-3755 CITY OF RENTON Seattle, WA 98124-2255 Engineering Dept, Attn: Jim Green, Project Manager Re: Public Notice 97-4-01329, September 23, 1997 City of Renton - Oakesdale Avenue SW, SW 16th Street to SW 27th Street Dear Mr. Green: Following our receipt of the October 23 letter from Mr. Gary Voerman of the EPA, and the October 28 letter from Mr. David Fredrick of the U.S. Fish and Wildlife Service, our design team met in the field with Mr. Steven Roy of Mr. Voerman's staff on November 14 and with Ms. Nancy Brennan-Dubbs of the USF&WS on November 13 to review the Oakesdale Avenue project. The EPA and USF&WS letters identified six concerns: 1. The proposed fill of a portion of the mitigation wetland on the Boeing property. 2. The proposed Phase II wetlands mitigation site. 3. The timing or phasing of the Phase II mitigation. 4. A permanent conservation easement on all wetlands mitigation sites. 5. The wetland seed mix. 6. Completion of a mitigation and monitoring plan prior to construction. With respect to Issue 1, the City has explored a number of corridors for the project. In addition, as a result of the value engineering study and the preliminary design effort, we have studied in some detail the configuration of the alignments at the north end of the project as it passes through the Boeing mitigation wetlands area. The City's process in considering corridor and alignment options is described in the attached Alternatives Analysis. The Alternatives Analysis demonstrates that: The City has made an extended effort to avoid wetland impacts. No other practical alignment will result in less impact to the Boeing mitigation wetlands. To move further west will impact the "riverine" portion of the wetlands and still impact the "delta" wet- 200 Mill Avenue South - Renton, Washington 98055 ®This paper contains 50%recycled material,20%post consumer November 20, 1997 Page 2 lands to some degree. There is no viable optional alignment to the east of the wetlands. Figures AA-5 and AA-6 illustrate the alternatives considered, including the pre-design alignment that appeared in the EIS. A road could be meandered through the Boeing parking lot, but such an alignment would not meet Transportation Improvement Board design speed criteria(minimum radius of 600 feet; minimum speed of 35 mph). • The preferred alignment shown in the EIS would have impacted much more of the Boe- ing mitigation wetland(0.7 acres). • We propose to over-mitigate for the impact to the Boeing mitigation wetland(3:1). The new mitigation project at the south end of Phase I will be coordinated with existing wet- lands to create a viable, improved wetland contiguous to Springbrook Creek to the east. As to Issues 2 and 3, both Mr. Roy of the EPA and Ms. Brennan-Dubbs of the U.S. Fish and Wildlife Service have visited the originally proposed Phase II wetlands mitigation site, and a second property owned by the City, south and east of the first site but adjacent to Springbrook Creek, as a potential substitute mitigation site. The City is willing to do additional investigation and design work for either site prior to any design work on Phase II of Oakesdale Avenue. The City does not, however, have funding for Phase II nor does it anticipate construction before 2001. This will provide sufficient time to fully document either of the proposed Phase II wetlands mitigation sites. We understand that neither Mr. Roy nor Ms. Brennan-Dubbs would object to deferring consideration of the Phase II mitigation site issues. If acceptable to the Corps, that would allow the permit for Phase I to be issued now and allow time for the proper mitigation site for Phase II to be analyzed and selected. The City agrees to the conservation easement(Issue 4), and the City's designers have revised the wetland seed mix(Issue 5) in the specifications. The City has a full design for the Phase I mitigation and will monitor the mitigation as required(Issue 6). We trust that this response will satisfy both EPA and USF&WS requirements, as well as those of the Corps, and that a permit can be issued for the project that will allow us to proceed immediately with Phase I while the City continues to address the final location and design for the Phase II mitigation. As you know time is critical, and we will appreciate your earliest reply. Very truly yours, Gregg Zimmerman, P.E. Administrator cc: Steven Roy,EPA Nancy Brennan-Dubbs, USF&WS Bryce Ecklein,Kato&Warren Attachment: Alternatives Analysis Rick Ford,Boeing [06107-0021/USACELTR.DOC1 I 1/21/97 November 20, 1997 Page 2 lands to some degree. There is no viable optional alignment to the east of the wetlands. Figures AA-5 and AA-6 illustrate the alternatives considered, including the pre-design alignment that appeared in the EIS. A road could be meandered through the Boeing parking lot, but such an alignment would not meet Transportation Improvement Board design speed criteria(minimum radius of 600 feet; minimum speed of 35 mph). • The preferred alignment shown in the EIS would have impacted much more of the Boe- ing mitigation wetland(0.7 acres). • We propose to over-mitigate for the impact to the Boeing mitigation wetland(3:1). The new mitigation project at the south end of Phase I will be coordinated with existing wet- lands to create a viable, improved wetland contiguous to Springbrook Creek to the east. As to Issues 2 and 3, both Mr. Roy of the EPA and Ms. Brennan-Dubbs of the U.S. Fish and Wildlife Service have visited the originally proposed Phase II wetlands mitigation site, and a second property owned by the City, south and east of the first site but adjacent to Springbrook Creek, as a potential substitute mitigation site. The City is willing to do additional investigation and design work for either site prior to any design work on Phase II of Oakesdale Avenue. The City does not, however, have funding for Phase II nor does it anticipate construction before 2001. This will provide sufficient time to fully document either of the proposed Phase II wetlands mitigation sites. We understand that neither Mr. Roy nor Ms. Brennan-Dubbs would object to deferring consideration of the Phase II mitigation site issues. If acceptable to the Corps, that would allow the permit for Phase I to be issued now and allow time for the proper mitigation site for Phase II to be analyzed and selected. The City agrees to the conservation easement(Issue 4), and the City's designers have revised the wetland seed mix(Issue 5) in the specifications. The City has a full design for the Phase I mitigation and will monitor the mitigation as required(Issue 6). We trust that this response will satisfy both EPA and USF&WS`requirements, as well as those of the Corps, and that a permit can be issued for the project that will allow us to proceed immediately with Phase I while the City continues to address the final location and design for the Phase Il mitigation. As you know time is critical, and we will appreciate your earliest reply. Very truly yours, Gregg Zimmerman, P.E. Administrator cc: Steven Roy,EPA Nancy Brennan-Dubbs,USF&WS Bryce Ecklein,Kato&Warren Attachment: Alternatives Analysis Rick Ford,Boeing [06107-0021/USACELTR.DOC] 11/21/97 INTRODUCTION The City of Renton (the City) is proposing completion of the unfinished portion of Oakesdale Avenue SW from SW 16th Street south to approximately SW 31st Street, where Oakesdale now ends in a cul-de-sac (Figure 1). The work would be completed in two phases, with Phase I encompassing the corridor from SW 16th Street to SW 27th Street and Phase H extending the roadway to SW 31st Street. Completion of this segment of roadway would provide a major link in the city's transportation network. Construction of this link would entail impacts to waters of the United States and adjacent wetlands, however, and therefore will require a permit from the U.S. Army Corps of Engineers (Corps) under Section 404 of the Clean Water Act. In addition to bridging Springbrook Creek, two wetland complexes would be affected by the proposed construction. At the northern end of the project area (Phase I) the road would result in the fill of approximately 0.24 acres of the mitigation wetlands constructed by The Boeing Company in 1992-3 for impacts associated with development of the Customer Services Training Center (CSTC). At the south end (Phase II) of the project approximately 900 feet of road would be located in wetlands tributary to Springbrook Creek. This Alternatives Analysis describes the investigations conducted by the City to identify the least environmentally damaging, practicable alternative for Oakesdale Avenue. NEED Limitations to traffic access in the north Green River Valley have long been acknowledged (City of Renton, Valley Transportation Plan). Bounded on the east by SR-167, on the north by I-405, and on the west by the Burlington Northern and Union Pacific railroad tracks, opportunities for roadway construction into the area are extremely limited. At the present time, the only north-south road that crosses 1-405 and continues south to Kent and Auburn is Lind Avenue. Furthermore, neither 1-405 nor SR 167 provide interchanges to the area. Despite these limitations, however, the ready access to I-5, I-405, and SR-167 once one gets out of this "box" has made the area a popular location for both industrial and office development. This continued development has only exacerbated the transportation problems created by the limited access. The City has long studied and evaluated potential north-south corridors through the area. In 1980, the City's Arterial Plan identified the Oakesdale Avenue corridor(then named Valley Parkway) as the north-south linkage to complement Lind Avenue. Completion of this corridor, however, required crossing under or over I-405 and through the Longacres Thoroughbred Racetrack, both of _which seemed daunting. The former was prohibitively expensive, and the latter was not acceptable to the landowner. Nonetheless, in 1984, when I-405 underwent reconstruction to provide HOV lanes, the City took the opportunity to construct the Oakesdale Avenue underpass. That project, costing $4.2 million would have otherwise cost about$12 million had the freeway reconstruction not been occurring at the same time. Despite a long history of affirmation to the City by Longacres' owners that the facility would continue to function as a horse racing track into the future, in the fall of 1990 the land was sold to The Boeing Company. Boeing was interested in converting the property to an office park campus, with CSTC as its signature facility. The CSTC was to provide training support for the latest Boeing product, the 777, and therefore it needed to be operational by December, 1993. With the sudden change in situation, and Boeing's need to quickly construct the CSTC, the City was unable to initiate and complete the environmental evaluation of a potential Oakesdale alignment necessary to meet the requirements of the State Environmental Policy Act (SEPA), and thus to identify to Boeing, and the public, the preferred alternative for the roadway. "EVERETT �J =� SEATTL _ BREMERTON FIENTON 00 r` SW S�� SITE t z �TACOMA 'OLYMPIA kes jam irlr �-� Proyect - �1 1 SrrE .o o S GTS Wa I WASHINGTON Al �v Renton r Btv C `` •. I 181 i En 1s7 � Prq, ect Strander Btvd SW 27thrSt m a a� 1 m � <I 3t SW 34th ISt 0 0 w cn ------------ SW 41 st. 1 180th IS qW CO 0� Kent 1 `O 181 � 16 PURPOSE:Construct Roadway IN:Wetlands on Site DATUM: VICINITY MAP AT:City of Renton ADJACENT PROPERTY OWNERS: COUNTY:King STATE:Wa see sheet 15 of 25 APPLICATION BY:City of Renton SHEET: 1 of 25 DATE:7/11/97 At the same time, however,Boeing needed to develop a site plan for the entire property to meet the City's development requirements. In addition, in order to meet the requirements of both Section 404 and the City's Sensitive Areas Ordinance, Boeing needed to develop a wetland mitigation plan to compensate for impacts associated specifically with construction of the CSTC. Recognizing that ultimately Oakesdale Avenue would be completed through their property, and also that the City was not in a position to make an immediate decision regarding roadway alignment, Boeing made a "best guess" as to where the road might be located and designed their site, and in particular, their wetland mitigation, around that location. At the presumed Oakesdale Avenue crossing, the wetland mitigation area narrows to an "hourglass" to provide the least potential impact from roadway construction. (Figure 2) Boeing recognized that the area to be affected by construction of Oakesdale Avenue SW would not remain as wetland. As a result, Boeing did not include this area in their calculation of mitigation to meet the requirements of the City's Sensitive Areas Ordinance. Meeting the mitigation requirements for the City of Renton substantially exceeded the requirements of the Corps (due to the City's use of the 1989 manual to identify wetlands, while the Corps was using the 1987 manual, and the 3:1 mitigation ratios required by the City). As a,;esult, although it was recognized that the mitigation area would ultimately be affected by the construction of Oakesdale little concern was expressed or documented. PURPOSE The proposed completion of Oakesdale Avenue from SW 16th Street to SW 31st Street is intended to provide a north-south linkage from downtown Renton through the north Green River Valley area into Kent, Auburn and other south Green River Valley areas. Completing this corridor will provide the second, and potentially the only additional non-freeway access between I-405 and 31st Ave SW between SR-167 on the east and the railroad tracks on the west. CORRIDOR EVALUATION Corridor Description As part of the SEPA EIS process, the City evaluated four distinct corridors, two with optional alignments, for the location of Oakesdale Avenue (Figure 3). Alternative A was the most direct route and basically followed the present proposed action. Under the original proposal the bridge over Springbrook Creek would have been located approximately 100 feet upstream of its proposed location. In addition, the intersection with 27th Street would have been about 100 feet east of the present proposed location, in order to match the orientation of the Oakesdale cul-de-sac at SW 31st Street and to avoid traversing over the Metro pipeline fill. Alternative B was located approximately 700 feet to the east of the proposed alignment and crossed Springbrook Creek about 700 feet upstream of the proposed crossing. The intersection with SW 27th would have been approximately 300 feet east of the proposed interchange. Alternative C was located about 500 feet east of the proposed alignment and crossed the creek about 400 feet upstream of the proposed bridge. The intersection with 27th would be at the same location as the original Alternative A interchange. Alternative D was located located approximately 500 feet west of the existing alignment, with the bridge in approximately the same location as the proposed action. The intersection with 27th /- c-- _ ____I�Itr-t r� I Existing Wedands CUSTOMER SERVICES TRAINING CENTER (CSTC) 0 % A A- A-A -A- A A A. A A A. Riverine Corridor A - A -A A Z Wetland "Delta" Small Lake Constructed Wetlands NOTE: This map Is for orientation purposes only. LEGEND FIGURE z), Welland(open water) WETLANDS CONSTRUCTED ON Not to Scale Welland THE CSTC SITE S H A P I RO I AS50CIATIE9, 111C- OAKESDALE AVENUE SW 3/97 i_iO5 G(06'f 7 S.W.I 6th St. No Wedands Found CSTC II Site S.W.i 9th St. U a I E. and 0 Weiland C Area proposed for project mitigation of wetland irnpact �w 6nd D[]d, =- S.W.27th St. — W and E ed,_do We Boeing Co.ProperlY Line and F L-—-—-—-—-—- ne —- City Oned W dand e Wedond Mitigation Bank Site NOTE:Wetland locations are approximate. LEGEND: FIGURE 3 ............. Ragged Wetland Edges 0 800 Wetlands Extend Outward Scade n Feet WETLANDS DELINEATED IN JANUARY 1995 S H A P I R O OAKESDALE AVENUE SW A350CIATZ3. INC. Avenue would be approximately 500 feet west of the proposed intersection. Preliminary Evaluation These alternatives were reviewed by City staff and concerned property owners. They were also presented for review at a public open house and public meeting. Based on the results of comments from these reviews and evaluations Alternatives A and C were selected for further consideration in the EIS. Elimination of Alternative B was based on wetland impacts and objections by the owner of the property east of the Boeing site. This alignment would require approximately 2 acres of wetland fill. In the northern portion of the alignment it would bisect the existing undeveloped property, rendering it virtually undevelopable The City would be forced to purchase this entire property from and unwilling seller, thus making the project very costly. Review of Alternative D by the City and Boeing (the property owner) determined that the impacts to the Boeing mitigation wetland would be greater under this alternative than under Alternative C. Furthermore, the road was slightly longer, and therefore more costly, but offered few advantages over Alternative C. Environmental Evaluation Alternatives A and C were evaluated in the SEPA EIS. For most elements of the environment, the potential impacts of the two alternatives were very similar. Table 1 compares those elements of the environment where the impacts of the two alternatives were noticeably different, and groups those impacts according to cost, and environmental damage. Through the SEPA process, the City determined that, as shown in Table 1, Alternative A was the least environmentally damaging and the most cost-effective alternative. This alternative was selected for preliminary design, value engineering, and funding requests. ALIGNMENT AND ENVIRONMENTAL EVALUATION Following completion of the Final EIS a design team was retained and the first task was a value engineering study of the entire proposed project. Value engineering is essentially a reevaluation of the project design to identify any potential cost effective improvements that might be implemented. Avoidance and minimization of wetland impact was a key element of the value engineering exercise. The southern end of the alignment was relocated to the west to the present location. This reduced wetland fill north of SW 27th Street from 0.219 acres to 0.03 acres. It would also reduce the fill in the Phase II portion of the project by about 50%. Redesign of the stormwater treatment facilities immediately north of SW 27th Street allowed treated stormwater to be used for wetland creation and enhancement rather than being discharged to a roadside ditch. A slight realignment of the road at the north end reduced the amount of wetland impact and shortened the length of the bridge. It also eliminated the need to relocate the discharge structure from the Boeing mitigation area. Under the original plan, the bridge would have crossed over the "hourglass" portion of of the mitigation wetland resulting in 0.29 acres of shading impact, which the Corps has previously indicated would be considered equivalent to a fill impact. Since the bridge would have only been a few feet above the surface, this shading would have rendered Table 1-Environmental Comparison of Alternatives A and C Cost Environmental Impact Wetland Fill lac.) _ Wetland shading ac. _ _ . _ _ , Alternative AI330 Cu Yds fill in Phase 1 0.3 (Phase 1) 0.33 (Phase 1) Right of Way dedicated by Boeing approx. 0.4 (Phase II 0 Relocate drainage structure from Boeing mitigation wetland Alternative G 4,330 Cu yds fill in Phase 1 0.84 (Phase 1) 0.51(Phase 1) Right of way purchased from Benaroya- $??? — _0.7_(Phase_II)_ 0 survival of any plants beneath the structure impossible. Furthermore, the road would have isolated another approximately 0.25 acres of mitigation wetland from the whole. Reduction in turning radius to the minimum allowable permitted the bridge to be located approximately 100 feet downstream of the original site. This resulted in the following: a shorter overall bridge length, reducing the cost; a bridge closer to perpendicular to the creek, reducing the area of lost riparian habitat and cost of the structure; eliminating the area of isolated wetland, thus reducing secondary habitat impacts: and eliminating the requirement to relocate the Boeing mitigation outlet structure, again reducing the cost and the habitat impacts to the riparian corridor of Springbrook Creek. Replacement of the realigned portion of the bridge over the mitigation area with a fill results in in a total wetland impact of 0.24 acres (compared to 0.29 acres of shading and 0.25 acres of isolation) and a cost saving of approximately $1 million. The possibility of an even tighter turn to completely avoid the Boeing mitigation wetland was considered, however several problems were apparent (See Figure 4). First, the road would then be encroaching on the riparian corridor of Springbrook Creek. Second, the road would be encroaching on another portion of the Boeing Mitigation wetland to the south. Third, the road would no longer meet minimum standards for and urban arterial and would not fulfill the City's project purpose. SUMMARY Environmental Evaluation Through the course of preliminary environmental analysis, public involvement, coordination with property owners, SEPA EIS, and value engineering the city has consistently striven to avoid and minimize impacts to wetlands while creating a severely needed, viable north-south roadway corridor through the north Green River Valley. At every stage in the process, opportunities to avoid or reduce the impacts to wetlands were identified and implemented. Cost The revised alignment will provide cost savings to the city in excess of$1 million compared to the original alternative C evaluated in the SEPA EIS. Logistics North-south transportation access into and through the north Green River Valley is and has been severely constrained by major railroad and highway transportation features to the west, north-and east. Existing roadway infrastructure characteristics make Oakesdale Ave. the only option for improved access to the area. The need for Oakesdale Ave. to function as an urban arterial creates certain limitations on turning radii, lane widths, bike lanes and other amenities which, if not met result in a roadway that is not conforming to federal and state standards. Technology The value engineering process has been used to assure that the least environmentally damaging, cost effective alternative has been proposed. The final project design, as described in the permit application, incorporates the the results of the many studies and evaluations that have been conducted on this site over the past two decades. t :1 1 G - 43.12*55' R 700.00' ! .. _.......... _..... a Z \ 4 .�..1/�•—�... \�\�,,. \\\` \•t._. � fir,+.� � .\'.�„wu. },'•,S tip ... R.. i ,t��'''` �� .:•i"l r,/ �, �i 1' v l;irk x'N ''�'' 1 1 �'----- �. I��yi i LL'` �,�.-•-/�'l/„� �/' � ��/�� �r t't'�J- �.,u.' Mw'�y px t s- \ °c��'_---� _ - —•"'.. "' � r /' 'ram% ./^d'/G• � l` r j t '�o I �� � r' 4, 22'14.4 ti� r t y r 1 4 t 1 �..... L - 465.93' I EIS ALIGNMENT _ • i t : .r i I City of Renton Oakesdale Avenue SW Extension 1997 Avoidance Alternative A-1 Figure AA-5 CONCLUSION In the proposed alignment for Oakesdale Avenue, every attempt has been made to avoid and minimize wetland impacts, while at the same time reducing project costs and responding to the logistical requirements both of the regional transportation system and the design requirements of roadway standards. NOV-17-97 MON 13:34 SHAPIRO & ASSOC FAX NO. 2066241901 P. 01 FAX Transmittal r Date: 11/17/97 Fax No: 425 277-4428 SHAPIRO d�AS-'W)0ATF5,INC. Phone: 277--5547 101 Yesler Way To: Scott Woodbury Suite 400 Company: City of Renton Seattle,WA 99104ccc777rrr Phone/206 • 624 • 9190 Address: Fax/206 - 624 • 1901 ® p�.A v ' �lOV 111997 From: Jim Keany _ TON Senior Wildlife Ecologist �Y Deft, a r .,.....n� I_C ✓ Ir' Project Name: Oakesdale Avenue S.W. Project No: 6971031 Subject: Mitigation Rcport Revisions -_ No. of Pages: 2 Comments: . Scott, I have edited the circled pwaa aph in response to Mark Pywell's edits_ I don't know if you have coordinated with Mark,and I wanted to mike sure that you agree with the paragraph as cditcd. Lct me know. Jim Original to be: ❑Mailed ❑Couriered !IX Will Not Follow ❑Other... Copies Sent: To: To: Company: Company: Fax No: Fax No: PLEASE NOTIFY US IMMEDIATELY AT 206 . 624 • 9190 IF NOT RECEIVED PROPERLY This fax uiay contain PRIVILEDGED AMID/OR CONFIDENTIAL INFORMATION iutendcd only for the use of the addressee. If you received this fax by nuaake,p1mw notify us irntnediately by phone. Thank You NOV-17 97 MON 13:35 SHAPIRO & ASSOC FAX NO. 2066241901 P. 02 • Photopoints would be established to obtain representative photographs of the project. Photos would be taken from the same Iocations to document appearance and progress of the project. • Vegetation data would be collected along permanent transeets in mitigated wetlands. Sampling methods would include quadrat sampling to measure the percent cover of emergent plant species and line intercept sampling to measure the amount of growth of shrub and tree species. • Mitigation plantings would be visually evaluated to determine the rate of survivorship, health, and vigor of plants. Established performance standards for the project would be compared to the monitoring results to judge the success of the mitigation effort. Evaluation of the success of the mitigation project would be based on the expected cover percentages and 80% survival rate. Monitoring reports describing the level of success of the plan would be written and submitted to the City of Renton Development Services Division for review and approval. VI. MAINTENANCE AND CONTINGENCY PLANS A two-year maintenance program would be part of the construction contract. The program would include watering, weeding, trash removal, and regular inspections of the project to ensure that plants were surviving and to identify any invasion by undesirable plant species. Under a one-year guarantee period, the contractor would replace failed plant material during the first year of planting. If subsequent monitoring indicates that additional plantings are required after the guarantee period, contingency plans will be implemented, with the type and number of additional plantings to be determined by the project biologist. In the event that a performance standard is not met, contingency plans will be developed and implemented to address the failure. This will be done upon approval of the City of Renton and the U.S. Army Corps of Erigineers. Contingency actions will include efforts to correct the cause of any failure to meet performance standards (e.g., supplemental plantings, invasive plant control). Additional monitoring events may be required to evaluate any contingency actions. Wetlands restored,enhanced, and created as part of this mitigation would be protected under local sensitive area ordinances and regulations. VII. LIMITATIONS OF THIS REPORT This report has been prepared for use by the City of Renton_ In preparing this report, SHAPIRO used information contained in site development plans that were current at the time of report Preparation- Recommendations made herein are based on information gathered in the field, information presented in previously prepared reports, and personal communications among SHAPIRO, the City of Renton, and other project consultants. Any proposed modification of site development plans that affects the proposed mitigation plan should be reviewed by SHAPIRO for necessary adjustments to the mitigation plan. MMARY --� The Oakesdale Avenue S.W. Extension Project would create 4.16 acres of new wetland on 2 parcels of approximately 2.0 acres each. Of this area, approximately 3.5 acres would be compensation for the loss of 1.32 acres of existing wetland caused by the project. Approximately ti 0.4 acres would replace wetland disturbed by the prior development of the adjoining property, for�p hick the City assumed the responsibility of providing cprr�pe�S8l0iy wetlant! area. Mitigation 5 � t ��� l �., �`�� /y`"�� O7;��'✓ �=�. ifs��`t neT top _ J .r d "rod rouvi -WI ATEFr,� r4loy Psi" amp a J � - L/aJ .�� i,✓,i� -teals 4+w1 y srrd/s �� 8 �� "� ; s�� :. �•,,� !���(� �°rim ..,�,y„�, „ti,9,�,�� h ��`a �s�F• �n- a -�r,-r/� ✓^^+� �7 J 40 �_�/�+ �''7,F 'Mr+-t�`ti'j w 010CITY OF RENTON ..ii Planning/Building/Public Works Department Jesse Tanner,Mayor Gregg Zimmerman P.E.,Administrator November 17, 1997 Nancy Brennan-Dubbs U.S. Fish and Wildlife Service 510 Desmond Dr. SE, Suite 102 Lacey, WA 98503-1273 SUBJECT: PRELIMINARY WETLAND PLAN FOR THE ENTIRE CITY OF RENTON MITIGATION SITE Dear Ms. Brennan-Dubbs: As you had requested, attached is a reduced schematic of the preliminary wetland plan for the entire City of Renton mitigation site that we visited with you last Thursday. I currently do not have a copy of the full size plan because our original is mounted on a foam core board. However, I thought I would send what I have immediately available until I can send you a revised full size plan that shows the Oakesdale Phase 2 mitigation proposal and other minor modifications to the site concept that we intend to make. We are currently working with Parametrix, our consultant for the overall plan, to convert the original site plan rendering into AutoCad format and incorporate the plan for the Oakesdale Phase 2 mitigation. The revised plan will more clearly show how the site concept is designed to minimize impact to the existing forested wetlands while enhancing reed canary grass dominated areas. It is important to note that one of the other minor modifications needed for the overall plan is a change in the vertical datum to be consistent with the Oakesdale plans and the City's new datum of NAVD 1988. The original site concept was prepared using the former City datum of NGVD 1929, which is 3.58 feet lower than the NAVD 1988 datum used for the Oakesdale plans. This is important to keep in mind when comparing the Oakesdale plan with the attached plan of the entire site. I hope that the attached preliminary plan is helpful in your review of the Oakesdale Phase 2 mitigation proposal. Please contact me at(425)277-5547 if you have any questions regarding the preliminary overall site plan. Sincerely, c W Scott Woodbury, P.E Surface Water Utility U:OAKE S DALE:97-022:S W attachment cc: Larry Warren,City of Renton Mark Boule,Shapiro&Associates Lin Wilson,City of Renton Ron Straka,City of Renton 200 Mill Avenue South - Renton, Washington 98055 MThis paper contains 50%recycled material.20%post consumer ��\ \ \\♦ 14f' y 4 r \ 4L kk4. �! 4i��_ �i \ , W bNNMNNM+ ',. ' �;5•.S�ir� • ��Y� « �rh9T[-�!' ��� y '4\ fill, NNI ie AA I- • '4 rp; a r;. b \`^\ r 1 , - i Z �� } z f � ' t / „4 \ I / " 3 M: a F,., .:. '"✓ ,: n. � ��.;� � nq p ¢�Noil g, �� 4 s M 3 Ik xV e - w fit o LCV`t ICI Z4 s T N a - � �.. .:AM _.'a., N111' ! -HoAoram lnrpao 017 irrn c ciq,Ili°l e rxlra» .Vidgatism Banl M4, /'ri4 el �, rsr,ornrrttlX,InC« ' ` LASA�„ Al a Figure 11. Proposed Site Plan - Mitigation Banking Site 1 DRAFT 11/13/97 Information Summary Wetlands, Hydrology, and Soils on the Oakesdale Extension Phase 2 Wetland Mitigation Site Wetlands. The wetland information available for the site includes: • Wetland delineation report(1991)and City memo regarding extension of expiration deadlines(1995). • Corps jurisdictional determination(1996). Wetland boundaries on the site were delineated in 1991. The Corps recently reconfirmed the 1991 boundaries and extended the delineation expiration to the year 2001. The City confirmation expires in early 1998, unless extended. Hydrology. The hydrologic information available for the site and surrounding area is extensive and includes: • Hydrologic(HSFP/HEC2)and hydraulic modeling(FEQ)of entire watershed (RW Beck and NHC, 1996). This work confirmed that only the northeast portion of the mitigation site is within the current 100-year floodplain of Springbrook Creek. • Southeast Central Business District Study(Gardner Consultants, Inc., 1992). This study describes the Tukwila portion of the subbasin tributary to the mitigation site. • Boeing wetland crest stage data for the South Marsh (Inventory wetland W-13Sj)and vicinity(5/91 to 3/92). • City of Renton crest stage data for wetland W-12a(3/94 to present). • Groundwater monitoring well data(3/95 to present). • Rating curve for 18"culvert outlet from City of Renton Wetland W-12a The existing wetlands on the mitigation site are sustained solely by direct precipitation as the ditch that passes through the site does not overflow and monitoring well and test pit data indicate that the groundwater is several feet below grade at its highest level. Thus groundwater could only be utilized for wetland creation by removing vast quantities of soil. However,the ditch that passes through the mitigation site does contain water much of the year and is the proposed source of hydrology for the site. The mitigation site is located within an approximately 300 acre subbasin tributary to Springbrook Creek. All flows within the subbasin currently outlet through an 18-inch culvert located at the western edge of City wetland W-12a. The culvert passes through a narrow berm installed in the 1970s. The top of the berm is at about elevation 14.6 feet at its lowest point. The berm separates wetland W-12a from overflows from Springbrook Creek except under extreme flood events, such as occurred in February 8, 1996. Water levels in wetland W-12a upstream of the culvert have been monitored on a monthly basis since March 1994. Culvert hydraulics can be used to convert the current water level readings into instantaneous flow volumes. Based on the crest stage gage data for wetland W-12a and the rating curve for the 18-inch culvert outlet from the wetland,the normal flow for the approximately 300 acre subbasin averages nearly 1 cfs for the months of November to June. I ' Information Summary Oakesdale Extension Phase 2 Mitigation Site Page 2 Less than 1/3 of the subbasin bypasses the mitigation site and much of this bypass area is undeveloped. The remainder of the subbasin is tributary to the ditch on the mitigation site. With a tributary area of about 200 acres,normal flows in the ditch at the mitigation site are estimated at 0.7 cfs or approximately 2/3 of the total basin outflow based on the ratio of tributary area. If 2 acres of emergent wetland were created with standing water an average of 18 inches in depth, an inflow of 0.7 cfs would fill the entire volume in approximately 2.2 days. It would take several months of rainfall to produce a similar volume if direct precipitation were the only water source. For the Oakesdale Extension Phase 2 mitigation,the proposed wetland creation will be accomplished by excavating soil from the site and connecting the excavated area to the ditch and diverting flows through the wetland using a weir structure. Flows from the wetland would be returned to the existing ditch. Future phases of wetland mitigation planned for the site would connect to the Oakesdale Phase 2 mitigation and continue the same concept of diverting flows through the created wetlands and returning the flow to the existing ditch. Future phases would benefit from a second proposed weir structure to be located in the ditch near the northwest corner of the site. This weir would be used to backwater flood the created wetlands on the mitigation site. In the winter of 1995, water ponded to a depth of 3 to 4 feet over wetland W-12a and the Boeing South Marsh (wetland W- 13Sj), an area that measures over 45 acres, because the culvert outlet from wetland W-12a was functioning poorly. If water can be ponded over this large an area,then the crest stage gage record prior to culvert maintenance illustrates that there is sufficient water to pond a significant volume of water onto the mitigation site. Detailed modeling of the subbasin is not recommended. The hydraulic routing is very complex and would be very difficult to model with any accuracy. The crest stage gage data is an actual measurement of the hydrology of the subbasin and more accurately represents the available hydrology. Finally it should be noted that the subbasin contains large areas of undeveloped land. Surface runoff will increase as development occurs within the subbasin which will furnish additional water flow in the ditch through the mitigation site. Soils. The soil information available for the site and surrounding area is extensive and includes: • SCS soils survey(1973). • Soil test pit data by Parametrix(1993). • Dames& Moore soils report for wetland bank project(1995). • Hong West memorandum for monitoring well installations (1997). Other soils reports for adjacent sites are also available. The soils underlying the mitigation site consist of alluvium deposited by the White and Green River. Groundwater data has been monitoring at several gages in the vicinity of the site since March 1995. Groundwater gages were installed on the site in August of 1997. Review of the data show that groundwater levels have a seasonal fluctuatation of several feet. While the gages Information Summary Oakesdale Extension Phase 2 Mitigation Site Page 3 on the mitigation site were only recently installed, the longer data record at the other gages are useful in comparing regional shallow ground water level fluctuations to those observed on the site. The alluvial soils vary in composition and likely include areas of high permeability which could drain water from the mitigation wetlands unless measures are taken to prevent infiltration. These measures involve covering the permeable soils with either a synthetic membrane or an impermeable soil layer to reduce the movement of water into the ground. A synthetic membrane is expected to cost less and is therefore the proposed method for reducing infiltration if necessary. The synthetic membrane is intended to inhibit infiltration, not prevent it, although synthetics used in critical applications, such as landfill or wastewater treatment facility liners, are designed to prevent infiltration. The use of synthetic liners in not new technology in wetland applications. The synthetic liner is most critical when the wetland has not yet developed its own low permeable surface layer of decaying matter and sediments. In the time it would take for tree roots to penetrate the membrane liner such a surface layer would already have begun to develop which could offset the reduction in the effectiveness of the liner caused by the penetrations. This is of course dependent upon the types of plant materials used and the depth of the liner below the surface. The potential for encountering zones of permeable soils needs to be addressed. The Boeing CSTC mitigation wetland has experienced problems maintaining design water levels because of permeable sand lenses. The mitigation site is City-owned. The mitigation site has already been covenanted as open space. The City has an opportunity to increase the functional value of the site and needs agency support to ensure that this opportunity is not lost. U:65119:97-003:S W attachments vj- .. „ Uo CIO ..... ... ... �.. ) pp Ono Ln \ , jcu J V) ate. 1 , ^......,� ............ I . •�,��, '` •'•`♦ �'.i ``` `,.� ,!/•1�,;-. •:;;:�:. ' I _.......;. .... :.. .:;::;.......:',.•..... -•j... rt.V Y.....•..','�...;,'i:'.:......r.................. ... . 1, •�' \ : y � ��� "`...... !;. ; :i. ..�..�. .... .. (. ...,..... .... ••^ ' (, , ..•, '%. ;' `: ... .. ;;; , ; ...I......... !., , 1.► Groundwater and Surface Water Monitoring Well Data Along Oakesdale Alignment and on the South Wetland Mitigation Site 14 13.18 _ 13.08 13.22 1 68 z67 12 12 Q7 197 12.26 11.8 - - 11.58 11.53 11.53 11.58 11.38 1 1.42 .63 0.17 10.3 10 -fig in nq- 9.8 9.69 9.32 .43 9.48 9.28 0 •0 .88 .8 8 Z .87 %0-1 8.46 .38 .18 8. .43 m 8 - - - - 7.8 7 -8-0 2 > 8 7.32 7 7.33 6.85 7.07 6.92 7.02 6. 6.2 .37 -GW-1 6 ---- -5- 6 - 6.07 --f-GW-2 5.48 5.06 A GW-3 -X GW-4 4 -- - - - See notes on attached data sheet. See stream and A GW-5 3 wetland crest stage gage data for additional -e-Gw-6 ` surface water information. -i GW-7 2 LO LO cD CO m CD $GW-8 rn rn rn T rn T T T rn rn m rn m rn N LO LO LO I, 00 O O LO LO L0 r, O 4 n O .- 17 M CJ m O � Ditch d' cD Date Water Levels Were Read 0 0 0 0 0 GWG_1.DAT f�`��E 3 Measure Down Raw Readings Date gw-01 I gw-02 gw-03 gw-04 gw-05 gw-06 gw-07 gw-08 ditch Measure down in feet for all gw gages. Ditch measure down from top of 48" staff plate in inches. 3-21-95 11.7 9.2 3.4 2.6 5.4 9-22-95 15 11.46 7.35 7.13 11.02 1-5-96 11.63 9.32 3.27 1.91 5.56 4-5-96 11.93 9.45 4.25 2.45 6.35 7-15-96 See note 1 10.65 5.7 5.52 7.8 10-7-96 9.6 6.14 4.51 8.6 1-8-97 8.5 1.75 1.3 3.8 4-10-97 9.5 3.75 2.45 5.01 6-30-97 See note 3 11.04 6.14 5.8 7.6 7.1 10 7.3 41.5 8-5-97 See note 2 5.95 5.25 7.7 7.55 10.34 9.05 See note 4 _ 9-5-97 See note 2 5.99 5.55 8.1 8.15 11.21 9.95 See note 4 10-6-97 See note 2 5.05 5.1 7.55 7.82 10.85 9.1 46.5 11-7-97 See note 2 4.7 4.65 6.95 6.85 9.81 5.02 31.75 11-10-97 6.41 9.55 5.7 39.8 Raw Readings Adjusted to NGVD Date gw-01 gw-02 gw-03 gw-04 gw-05 gw-06 gw-07 gw-08 ditch Top of Gage 18 16.52 13.57 13.98 16.98 16.1 19.03 17.28 16.54 3-21-95 6.3 7.32 10.17 11.38 11.58 9-22-95 3 5.06 6.22 6.85 5.96 1-5-96 6.37 7.2 10.3 12.07 11.42 4-5-96 6.07 7.07 9.32 11.53 10.63 7-15-96 5.87 7.87 8.46 9.18 10-7-96 6.92 7.43 9.47 8.38 1-8-97 8.02 11.82 12.68 13.18 4-10-97 7.02 9.82 11.53 11.97 6-30-97 5.48 7.43 8.18 9.38 9 9.03 9.98 13.08 8-5-97 7.62 8.73 9.28 8.55 8.69 8.23 9-5-97 7.58 8.43 8.88 7.95 7.82 7.33 10-6-97 8.52 8.88 9.43 8.28 8.18 8.18 12.67 11-7-97 8.87 9.33 10.03 9.25 9.22 12.26 13.89 11-10-97 9.69 9.48 11.58 13.22 Notes: 1. GW-01 destroyed by development project. 2. GW-02 inaccessible due to construction activity. 3. Readings of 6/30 are potentially 1'too low because of a fray in the insulation of the instrument cable 1'above the sensor. 4. The ditch is located near GW-08. The ditch was dry if no readings are listed. Page 1 Crest Stage Gage No. 6 West Cell of Wetland W-12, FEQ Wetland W7b Ground Elev. at Gage = 9.82 NGVD Elev. of Invert of 18" Culvert Outlet = 9.05 NGVD 15.1 14.6 14.1 13.6 13.1 j 12.6 U Z 12.1 - ■Previous Crest "' ®Current Water Level 11.6 6 E E 10.6 10.1 -- — o 9.5575 d m 9.05 m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m 4 6 4 4 M w 6 6 n r� cb 4 � 6 N w 0 N N N ro A rn w w w 6 M N m or M 7 4 6 6 n of 6 d N - N N N } rD 6 r\ w 7 O N � N 7 4 10 6 r� 6 6 d N .- 7 7 11 . M N .- N - .- - P IIf f0 n OD A d ^DBte N M Additional readings would have been recorded 4/96 through 11196 if readings would have been taken at the culvert outlet when the water was below the ground elev at the gage. Readings were made at the culvert when appropriate beginning 12/96. RATING.XLS Rating Curve 11/4/97 Rating Curve for the 18" Culvert Outlet from Inventory Wetland W-12a 10 9 For Use With Current Water Level Reading (10/95 to present) from the Chart Titled "Crest Stage Gage No. 6" to Determine 8 Instantaneous Outflow From the Subbasin of Which the Phase 2 Mitigation Site is a Part (Assumes Tailwater of 9.0 Feet or Lower). 7 6 N C,1 3 5 0 U 4 3 2 1 I 0 ,w = 9 9.5 10 10.5 11 11.5 12 Water Surface Elev. at Culvert Inlet (ft NGVD) � a THE CITY OF RENTON DEPARTMENT OF = PLANNING/BUILDING/PUBLIC WORKS vvNwv FOURTH FLOOR 200 MILL AVENUE SOUTH µ< RENTON, WASHINGTON 98055-2189 FAX: 235-2541 To: r�,s Company: Phone: Fax: From: 'S�o7- Company: Phone: Fax: Date: Y/1211`7 Pages including this cover page: J� Comments- .Saz'l' 4w.. welt G-'tea--z A'�- C-4,- !h �La i� �or' J)w V hc�/'f�ira �►ot /�u�e� r y L wm tit h� �b�t�w fly ��t.� 3a 4,, .... .(.ai A. a.r. .ucTu<.L,S.eIDT.•a u—[.r(Tur lnna - •~( �' - - .I' _ ` <... 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Existing Conditions Mitigation Banking Site 2 &oo— MY(, Table 3 Event-Stage-Duration Analysis Current Land-use With Mitigation Bank CSU S` WDM filename: J d:\wetbank\wetbank.wdm Data Set number: 591 ..Elevation GREATER than or equal Critical Total Hours Analysed: 262968 Period of Analysis :10/ 1/1961 - 9/30/1991 using months:10 to 9 Critical Depths 6.000 7.000 8.000 9.000 10.000 11.000 12.000 13.000 14.500 16.000 Xt >= Critical 17.765 7.202 3.290 1.263 0.449 0.171 0.084 0.028 0.006 0.000 t >= Critical 46716 18938 8651 3320 1180 450 220 73 15 0 Total Events 1261 1101 550 201 75 27 15 7 3 0 Duration(hr) Events 3 1250 1049 510 190 72 24 15 7 3 ------- 6 1184 877 412 158 61 21 14 6 1 ------- 9 1069 655 320 128 49 18 10 4 ------- ------- 12 940 492 247 100 35 17 9 3 ------- ------- 15 798 386 185 75 30 14 ------- ------- ------- ------- 18 691 324 152 61 22 10 6 ------- ------- ------- 21 593 266 122 49 18 9 2 1 ------- ------- 24 526 230 100 45 15 7 ------- ------- ------- ------- 27 474 189 84 38 12 5 ------- ------- ------- ------- 30 434 161 72 34 11 4 ------- ------- ------- ------- 33 399 141 64 28 9 ------- ------- ------- ------- ------- 36 363 128 55 25 7 ------- ------- ------- ------- ------- 39 332 103 52 20 6 ------- 1 ------- ------- ------- 42 306 94 49 17 ------- ------- ------- ------- ------- ------- 45 290 84 41 13 3 ------- ------- ------- ------- ------- 48 276 71 36 12 ------- 2 ------- ------- ------- ------- 51 257 68 33 10 ------- 1 ------- ------- ------- ------- 54 245 64 28 9 ------- ------- ------- ------- ------- ------- 57 234 58 27 ------- 2 ------- ------- ------- ------- ------- 60 218 51 23 ------- ------- ------- ------- ------- ------- ------- 63 201 44 14 5 ------- ------- ------- ------- ------- ------- 66 187 41 13 ------- 1 ------- ------- ------- ------- ------- 69 183 38 9 4 ------- ------- ------- ------- ------- ------- 72 171 37 8 3 ------- ------- ------- ------- ------- ------- 75 165 29 7 ------- ------- ------- ------- ------- ------- ------- 78 159 27 ------- ------- ------- ------- ------- ------- ------- ------- 81 145 26 ------- 1 ------- ------- ------- ------- ------- ------- 84 138 21 4 ------- ------- ------- ------- ------- ------- ------- 87 128 18 3 ------- ------- ------- ------- ------- ------- ------- 90 125 15 2 ------- ------- ------- ------- ------- ------- ------- 93 122 ------- ------- ------- ------- ------- ------- ------- ------- ------- 96 117 14 ------- ------- ------- ------- ------- ------- ------- ------- 99 ill 13 ------- ------- ------- ------- ------- ------- ------- ------- 102 104 ------- ------- ------- ------- ------- ------- ------- ------- ------- 105 102 12 ------- ------- ------- ------- ------- ------- ------- ------- 108 93 10 ------- ------- ------- ------- ------- ------- ------- ------- ill90 9 ------- ------- ------- ------- ------- ------- ------- ------- 114 85 ------- ------- ------- ------- ------- ------- ------- ------- ------- 117 80 ------- ------- ------- ------- ------- ------- ------- ------- ------- 120 75 ------- ------- ------- ------- ------ ------- ------- ------- ------- 123 72 ------- ------- ------- ------- ------- ------- ------- ------- ------- 126 68 ------- ------- ------- ------- ------- ------- ------- ------- ------- 129 67 5 ------- ------- ------- ------- ------- ------- ------- ------- 132 63 ------- ------- ------- ------- ------- 135 62 ------- ------- ------- ------- ------- ------- ------- ------- ------- 138 60 4 ------- ------- ------- ------- ------- ------- ------- ------- 141 57 ------- ------- ------- ------- ------- ------- ------- ------- ------- 144 56 ------- ------- ------- ------- ------- ------- ------- ------- ------- 147 55 ------- ------- ------ ------- ------- ------- ------- ------- ------- 150 52 ------- ------- ------- ------- ------- ------- ------- ------- ------- 153 50 3 ------- ------- ------- ------- ------- ------- ------- ------- 156 48 ------- ------- ------- ------- ------- ------- ------- ------- ------- 159 43 ------- 1 ------- ------- ------- ------- ------- ------- ------- 162 42 2 ------- ------- ------- ------- ------- ------- ------- ------- 165 40 ------- ------- ------- ------- ------- ------- ------- ------- ------- 168 39 ------- ------- ------- ------- ------- ------- ------- ------- ------- 171 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 174 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 177 32 1 ------- ------- ------- ------- ------- ------- ------- ------- 180 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 183 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 186 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 189 30 ------- ------- ------- ------- ------- ------- ------- ------- ------- 192 28 ------- ------- ------- ------- ------- ------- ------- ------- ------- 195 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 198 26 0 0 0 0 0 0 0 0 0 Table 3 Event-Stage-Duration Analysis Current Land-use With Mitigation Bank WDM filename: d:\wetbank\wetbank.wdm Data Set number: 591 ..Elevation GREATER than or equal Critical Total Hours Analysed: 66240 Period of Analysis :10/ 1/1961 - 9/30/1991 using months:10 to 12 Critical Depths 6.000 7.000 8.000 9.000 10.000 11.000 12.000 13.000 14.500 16.000 %t >= Critical 27.874 12.024 5.797 2.355 0.767 0.258 0.112 0.027 0.006 0.000 t >= Critical 18464 7965 3840 1560 508 171 74 18 4 0 Total Events 531 476 249 103 36 13 7 2 1 0 Duration(hr) Events 3 524 456 229 94 35 10 7 ------- 1 ------- 6 490 378 182 79 29 9 6 2 ------- ------- 9 454 278 146 63 22 8 ------- ------- ------- ------- 12 397 207 115 49 15 7 3 1 ------- ------- 15 341 157 85 36 13 6 ------- ------- ------- ------- 18 294 138 69 27 9 ------- ------- ------- ------- ------- 21 252 113 50 22 8 4 1 ------- ------- ------- 24 213 97 39 20 6 2 ------- ------- ------- ------- 27 187 81 33 17 ------- ------- ------- ------- ------- ------- 30 171 68 29 16 5 1 ------- ------- ------- ------- 33 160 61 28 12 3 ------- ------- ------- ------- ------- 36 148 52 23 11 ------- ------- ------- ------- ------- ------- 39 135 42 22 9 2 ------- ------- ------- ------- ------- 42 122 36 21 7 ------- ------- ------- ------- ------- ------- 45 116 32 20 5 1 ------- ------- ------- ------- ------- 48 113 26 17 4 ------- ------- ------- ------- ------- ------- 51 107 25 15 ------- ------- ------- ------- ------- ------- ------- 54 102 24 ------- 3 ------- ------- ------- ------- ------- ------- 57 97 ------- 11 ------- ------- ------- ------- ------- ------- ------- 60 91 21 8 ------- ------- ------- ------- ------- ------- ------- 63 79 ------- 5 2 ------- ------- ------- ------- ------- ------- 66 71 17 4 ------- ------- ------- ------- ------- ------- ------- 69 69 16 ------- ------- ------- ------- ------- ------- ------- ------- 72 63 15 ------- 1 ------- ------- ------- ------- ------- ------- 75 61 12 3 ------- ------- ------- ------- ------- ------- ------- 78 59 ------- ------- ------- ------- ------- ------- ------- ------- ------- 81 56 11 ------- ------- ------- ------- ------- ------- ------- ------- 84 54 8 ------- ------- ------- ------- ------- ------- ------- ------- 87 49 7 ------- ------- ------- ------- ------- ------- ------- ------- 90 46 ------- ------- ------- ------- ------- ------- ------- ------- ------- 93 44 ------- ------- ------- ------- ------- ------- ------- ------- ------- 96 42 5 ------- ------- ------- ------- ------- ------- ------- ------- 99 38 ------- ------- ------- ------- ------- ------- ------- ------- ------- 102 36 ------- ------- ------- ------- ------ ------- ------- ------- ------- 105 35 ------- ------- ------- ------- ------ ------- ------- ------- ------- 108 31 ------- ------- ------- ------- ------- ------- ------- ------- ------- ill29 4 ------- ------- ------- ------- ------- ------- ------- ------- 114 27 ------- ------- ------- ------- ------- ------- ------- ------- ------- 117 25 ------- ------- ------- ------- ------- ------- ------- ------- ------- 120 24 ------- ------- ------- ------- ------- ------- ------- ------- ------- 123 23 ------- ------- ------- ------- ------- ------- ------- ------- ------- 126 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 129 20 ------- ------- ------- ------- ------- ------- ------- ------- ------- 132 19 ------- ------- ------- ------- ------- ------- ------- ------- ------- 135 18 ------- ------- ------- ------- ------- ------- ------- ------- ------- 138 17 ------- ------- ------- ------ ------- ------- ------- ------- ------- 141 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 144 16 ------- ------- ------- ------- ------- ------- ------- ------- ------- 147 15 ------- ------- ------- ------- ------- ------- ------- ------- ------- 150 14 ------- ------- ------- ------- ------- ------- ------- ------- ------- 153 ------- 2 ------- ------- ------- ------- ------- ------- ------- ------- 156 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 159 ------- ------- 1 ------- ------- ------- ------- ------- ------- ------- 162 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 165 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 168 13 ------- ------- ------- ------- ------- ------- ------- ------- ------- 171 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 174 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 177 10 1 ------- ------- ------- ------- ------- ------- ------- ------- 180 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 183 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 186 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 189 9 ------- ------- ------- ------ ------- ------- ------- ------- ------- 192 8 ------- ------- ------- ------ ------- ------- ------- ------- ------- 195 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 198 7 0 0 0 0 0 0 0 0 0 Table 3 Event-Stage-Duration Analysis Current Land-use With Mitigation Bank �:.NDM filename: d:\wetbank\wetbank.wdm Data Set number: 591 ..Elevation GREATER than or equal Critical rotal Hours Analysed: 66240 Period of Analysis :10/ 1/1961 - 9/30/1991 using months: 3 to 5 Zritical Depths 6.000 7.000 8.000 9.000 10.000 11.000 12.000 13.000 14.500 16.000 tit >= Critical 13.767 4.633 1.698 0.525 0.205 0.131 0.089 0.042 0.006 0.000 t >= Critical 9119 3069 1125 348 136 87 59 28 4 0 Total Events 294 198 84 22 6 3 2 2 1 0 Duration(hr) Events 3 292 185 80 20 5 ------- ------- ------- 1 ------- 6 274 153 57 16 4 3 ------- 2 ------- ------- 9 242 114 40 13 ------- ------- ------- ------- ------- ------- 12 208 79 31 8 ------- ------- ------- ------- ------- ------- 15 179 64 21 6 3 ------- ------- ------- ------- ------- 18 154 50 18 5 ------- ------- 2 ------- ------- ------- 21 127 41 15 ------- ------- ------- ------- 1 ------- ------- 24 109 33 11 ------- ------- ------- ------- ------- ------- ------- 27 99 27 7 ------- ------- ------- ------- ------- ------- ------- 30 92 23 ------- ------- ------- 2 ------- ------- ------- ------- 33 83 20 ------- ------- ------- ------- ------- ------- ------- ------- 36 74 18 ------- ------- ------- ------- ------- ------- ------- ------- 39 70 ------- 6 ------- 2 ------- 1 ------- ------- ------- 42 64 12 ------- 3 ------- ------- ------- ------- ------- ------- 45 61 ------- ------- ------- ------- ------- ------- ------- ------- ------- 48 53 ------- ------- ------- ------- ------- ------- ------- ------- ------- 51 48 11 5 ------- ------- 1 ------- ------- ------- ------- ------- 2 ------- ------- ------- ------- ------- ------- 57 41 10 4 ------- ------- ------- ------- ------- ------- ------- 60 35 8 3 ------- ------- ------- ------- ------- ------- ------- 63 34 ------- ------- ------- ------- ------- ------- ------- ------- ------- 66 ------- 7 2 ------- 1 ------- ------- ------- ------- ------- 69 32 ------- ------- ------- ------- ------- ------- ------- ------- ------- 72 29 ------- ------- ------- ------- ------- ------- ------- ------- ------- 75 28 ------- ------- ------- ------- ------- ------- ------- ------- ------- 78 26 ------- ------- ------- ------- ------- ------- ------- ------- ------- 81 ------- ------- ------- 1 ------- ------- ------- ------- ------- ------- 84 23 5 ------- ------- ------- ------- ------- ------- ------- ------- 87 ------- 4 ------- ------- ------- ------- ------- ------- ------- ------- 90 21 ------- 1 ------- ------- ------- ------- ------- ------- ------- 93 20 ------- ------- ------- ------- ------- ------- ------- ------- ------- 96 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 99 18 ------- ------- ------- ------- ------- ------- ------- ------- ------- 102 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 105 16 3 ------- ------- ------- ------- ------- ------- ------- ------- 108 14 2 ------- ------- ------- ------- ------- ------- ------- ------- ill13 1 ------- ------- ------- ------- ------- ------- ------- ------- 114 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 117 12 ------- ------- ------- ------- ------- ------ ------- ------- 120 10 ------- ------- ------- ------- ------- ------- ------- ------- ------- 123 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 126 9 ------- ------- ------- ------- ------- ------- ------- ------- ------- 129 8 ------- ------- ------- ------- ------- ------- ------- ------- ------- 132 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 135 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 138 7 ------- ------- ------- ------- ------ ------- ------- ------- ------- 141 6 ------- ------- ------- ------- ------- ------- ------- ------- ------- 144 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 147 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 150 5 ------- ------- ------- ------- ------- ------ ------- ------- ------- 153 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 156 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 159 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 162 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 165 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 168 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 171 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 174 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 177 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 180 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 183 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 186 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 189 4 ------- ------- ------ ------- ------- ------- ------- ------- ------- 192 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 195 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 198 3 0 0 0 0 0 0 0 0 0 Table 3 Event-Stage-Duration Analysis Current Land-use With Mitigation Bank WDM filename: d:\wetbank\wetbank.wdm Data Set number: 591 ..Elevation GREATER than or equal Critical Total Hours Analysed: 66240 Period of Analysis :10/ 1/1961 - 9/30/1991 using months: 7 to 9 Critical Depths 6.000 7.000 8.000 9.000 10.000 11.000 12.000 13.000 14.500 16.000 %t >= Critical 3.148 1.156 0.476 0.146 0.026 0.000 0.000 0.000 0.000 0.000 t >= Critical 2085 766 315 97 17 0 0 0 0 0 Total Events 116 73 36 11 1 0 0 0 0 0 Duration(hr) Events 3 116 69 28 10 ------- ------- ------- ------- ------- ------- 6 108 57 24 8 ------- ------- ------- ------- ------- ------- 9 91 36 13 5 ------- ------- ------- ------- ------- ------- 12 77 21 10 2 ------- ------- ------- ------- ------- ------- 15 53 16 6 ------- 1 ------- ------- ------- ------- ------- 18 39 12 4 ------- ------- ------- ------- ------- ------- ------- 21 28 7 ------- ------- ------- ------- ------- ------- ------- ------- 24 25 4 3 1 ------- ------- ------- ------- ------- ------- 27 21 3 1 ------- ------- ------- ------- ------- ------- ------- 30 17 ------- ------- ------- ------- ------ ------- ------- ------- ------- 33 10 ------- ------- ------- ------- ------ ------- ------- ------- ------- 36 9 2 ------- ------- ------- ------- ------- ------- ------- ------- 39 8 ------- ------- ------- ------- ------- ------- ------- ------- ------- 42 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 45 ------- ------- ------- ------ ------- ------- ------- ------- ------- ------- 48 7 ------- ------- ------- ------- ------- ------- ------- ------- ------- 51 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 54 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 57 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 60 ------- ------- ------- ------- ------- ------- ------- ------ ------- 63 4 ------- ------- ------- ------- ------- ------- ------- ------- ------- 66 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 69 3 ------- ------- ------- ------- ------- ------- ------- ------- ------- 72 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 75 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 78 2 ------- ------- ------- ------ ------- ------- ------- ------- ------- 81 1 ------- ------- ------- ------- ------- ------- ------- ------- ------- 84 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 87 ------- ------- ------- ------ ------- ------- ------- ------- ------- ------- 90 ------- ------- ------- ------ ------- ------- ------- ------- ------- ------- 93 ------- ------- ------ ------- ------- ------- ------- ------- ------- ------- 96 ------- ------- ------- ------ ------- ------- ------- ------- ------- ------- 99 ------- ------- ------- ------ ------- ------- ------- ------- ------- ------- 102 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 105 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 108 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ill ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 114 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 117 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 120 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 123 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 126 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 129 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 132 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 135 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 138 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 141 ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- 144 ------- ------- ------- ------- ------- 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FIELD xis xrt x 21 21 A �6 � Yam,- 1;er '5tt— ?r a c&vkQ %k— fv Ltd. ea 1;d7 l vS -- - --- n i -Goy Jn he v,� Q�/vvd- SLd�S . � t'� ►ti✓J 1 `r1`7 al rc r of 41,n 44 4v d4rf Gj Ae`4 d,�� 61 Ve tde 4t,) �A '74 c"5 f�. .P) 6WI16� cx�— wl+� Pa— k�� �: 30 11/07/1997 16: 45 206-720-5600 K:;TO a WARREN INC. PA-GE 01 KAT0& 2003 Western Avenue WARREN V 555t1farket Place One Te!_ 206/Ra8-4200 INCORPORATEDSeattle, Washington 98121 Fax: 20617 28-5608 TRANSMITTAL FORM To: ;J Date: I�� Of: No. of pages (including cover sheet): — Via: Mail ❑ Fax ❑ Fax Number: Courier ❑ From: FedEx ❑ Contents: _ } Comments- 4Allp� 4AA�� 4�,6 Enclosures: _ cc: [Cam&warren•1UIT96 C71{0cmx 1.traarmit\traaarM I.d— ace a� C-Iq. r�.� Puget Sound program / years."In some communities the only to managing environmental prob ems," The Puget Sound Water Quality Action missing piece is adoption of a stormwater said Barrett. Team's current work plan calls on every manual,"said Barrett."Within two years (The Puget Sound plan also calls for city and county in the Puget Sound basin King,Pierce and Snohomish counties will comprehensive programs for urban areas. to adopt a"basic"stormwater program by have completed regional manuals.Once Comprehensive programs include all June 1999.Basic programs are intended to those are in place,many communities aspects of a basic program,plus addi- prevent stormwater problems created by within those jurisdictions will likely adopt tional elements to address existing new development(or redevelopment), those manuals by reference." problems.) through: Barrett believes the big challenge will For information,contact Tony Barrett ■ Adopting ordinances that require new be finding ways to help the roughly one- at(360)407-6467,Rod Sakrison(North- developments to treat runoff; third of communities that have made little west Region)at(425)649-7140,or Gary ■ Adopting Ecology's(or an equivalent) progress."These are smaller communities Kruger(Southwest Region)at(360)407- Stormwater Manual; with relatively fewer resources to commit 0238. 4- 0 Improving operation and mainte- nance of drainage and treatment facilities; progress in developing "basic" stormwater programs ■ Educating citizens and businesses. Roughly two-thirds of Puget Sound communities have developed,or are 34% 4A making substantial progress towards 3 developing,basic stormwater programsrr N Fully Developed ed (see chart).These jurisdictions represent o ��` Es Partially Developed 90%of the basin's population. Ecology's Tony Barrett expects many 0 Little Progress more communities to meet all the require- ments for a basic program within two Grin s Board orders Ecology to expand scope of c nstruct' on permit Municipalities throughout Washington statewide would be brought under the Ecology's 1995 construction permit on State will need stormwater permits to permit by this modification. grounds that it would not adequately build roads,parks,schools,and other Under the proposed modifications, protect water quality. public construction projects that disturb municipal projects would be subject to The board ruled that the permit five acres or more of land area,under a permit requirements,and need to develop provides reasonable stormwater controls, proposed expansion of Ecology's Clean a stormwater pollution prevention plan but cited state water pollution law(RCW Water Act permit system. and apply for coverage under the permit at 90.48)in requiring Ecology to extend Ecology's existing stormwater least 38 days prior to any soil disturbing coverage to all municipalities.The board "general permit"for construction activi- activities. found[here is no provision in state law to ties,issued in November 1995,followed The modification would not change exempt dischargers from protecting water federal regulations in exempting munici- any stormwater control requirements of quality because of population size. palities with a population of less than the permit or make any other changes to 100,000. permit coverage.Existing permit holders For more information The proposed expansion,required by a would not be affected.Ecology is propos- Ecology will be holding public workshops Pollution Control Hearings Board order, ing to reissue the modified construction and hearings on the proposed modifica- would extend permit coverage to include general permit by November 21, 1997. tions in mid-October(see schedule,page all municipalities,regardless of popula- 11). Written comments must be post- tion. Board order cites state law marked November 7, 1997.To order The proposed permit would take in an Ecology is proposing the changes to documents explaining the modified additional 265 cities and 33 counties, comply with the Pollution Control stormwater general permit for construction along with all other"municipal entities" Hearings Board's decision in Save Lake activities,call(360)407-7156. such as flood,sewer,port,school and fire Sammamish vs.the Departments of For more information,contact districts. Ecology and Transportation(PCHB No. Ecology's Glenn Pieritz at(360)407- Approximately 100 projects per year 95-14).The plaintiff in the case appealed 6437,e-mail lmat461@ecy.wa.gov ❖ Conf a ce -7- Fall 1997 AV - - jell i uJ�P- 3, 711� Lf f D V 1 Y 11 7, 2,z 3 KATo& 2003 Westera Avenue `�7 WARREN , 555,11arket Place One Tek 2061448-4200 INCORPORATEDSeattle, Washington 98121 Far-206/728-5608 TRANSMITTAL. FORM To: iM 1 , \ - �o Date: 1 d' 3 Of. No. of pages (Including cover sheet): Via: Mail ❑ Fax Fax Number- Courier ❑ Fromt• FedEx ❑ Contents: J S w 4 Comments- #of pages Post-It"brand fax transmittal m Fro�7571 .-�.s To Ca. Co. Phone # Dept. a? Fax# Fax# Enclosures: cc: Into it Wur�n-I1/13/96 C?fon�•a�asm+�',uwm�L4oc C ,T-31-1997 12=49 FROM US CCJt—KtIaULH i uK T tx�r��n-n �' - DEPARTMENT OF THE ARMY rRiG7. COR►$ OF ENGIN£ER9 sF^TTt£ 015 P.O. BOX 3705 • i SEnT-Lr, WASH:Nr-roN 1812a•2255 Regulatory Branch Date: 3 �� Number of Pages Faxed (including this page): Ce To: r c v. FAX Number: From: Regulatory Branch 495 Phone Number: (206) 764_3 FAX Number: (206) 764-6602 COMMENTS OCT-31-1%? 12:49 F-NLM Ub gut-KCuuA-r.i ut 1 c--, ir3/28/97 WF.D Q4'33 FAX 300 T53 9008 U.S. FISH & WILDLIFE SVC " COS RE6:.TYY oQ2 United States Deputment of t c Ynt Or FISH AND WiLDLYE SrAVICE North Pacific Coast Eaoraeon Western Washiarer Offict S 10 Desmond Drive SE, Suite 102 Lacey,WashinZon 98503 Phone: (360)753-9440 Fax (360) 753-9008 October 28, 1997 Colonel daisies h2 Rigsby District Engineer Corys of Engiows,Sesttic District P.O.-'Box 3 755 Seattle, Washington 99124-2Z5 Atrmtoa Jim Gwen.PT6,; t MAn&9CT Fie: 97-4-01329,City of Renton Dean Colonel Rigsby: The U. S.Fish and Wildlife Semce(movie.)has reviewed the above rcf*r*=ed public notice to . construct a road in wetlan a4;ezez t to Spziagbmok Crcek, King County, Washington. proposed piviect would impact a total of ayproxiura*y 1.32 ncre3 of wetlands,including C24 a=m ofwedands couutructed as mitigation Ybr Nationwide Permit number DY13-4-014493,issuedto$re Boeing Company in 1992. ;he Service did not ze5pond to this prrvioua public notics. The prvpvsad project and mitigation weuldbe iaoplamented intwophar><s. PbMt I Oftbc proposed project would impact 031 acres of wctlunds. Phase 2 would imp= 1.0I &=I of wetlands. A total of four acres of mitigation would be provided to compensate for the 132 acres of irapwts- Two acres of wetlands would be corwnwzed on each of two sepamto niitigatzou, parcalg. Phase 2 mitigation will only be creatrd if Phase 2 of the proposed project is censtrac%x The pmpaxd Phase 2 miti�rntion site would include installation of a lrnar to ens=that adcquatc hydrology is maintained at the site. Use of liners or soil tmmdmcnta, such ae bentanite clay, iadieate that the area is not suitable as a wetland mitigation site. This is disc,in part,to the higter risk of maintaining the=quirad hydrology in pcspetmty without human manipulation. Laws can leak or c-. uk with time,losing their sbiliy to maintain wetland hydrology_ Tres and shrub growth =d survzvsd wary be negatively impsated due to lair m bility of their root systems to penetrate the liner. Tha Service recommends that another mitigation site be proposed. Vae na=4va soation of the public notice states that the wetlands avaoriated with Pham I of the proposed project were rated as hzving low to moderate functional values. As a miLiori'y of these wetlsude were constructed tn.1993 as mitigation,it is unZlwly that tbay are fully fSanctia�due To the short length of time 2my have been in place` 7o rate them without acknowledging their recent OCT-31-1997 1�2:5e rKw" uZ) wr_-ncuu�r+����� - � -' • - �jpOS . 10/29/97 QED 09:54 FAX 380 53 4D08 C,S. PISH WILDLIFE SVC �,• GOE REGLrFtY cmafon is is PPMPrisx. Altbough tic cuf=t r■-11V of the errand wetlands is inappr+opriatc in dcr,rrmini�the nee ,enWy compmnsstion,we note that the low rating does not appear to be r:floctzd in the proposewt tuft pacn. Based op the uformation contained in the public notice,the Service would not object to is5aznCe of a permit fbr the proposed project if tic- m;c ullowmg mrzcs are addressed tutdlor iucvrparattd as pvzt 0f 1be permit. Ile Service believes that theca me=u es ero ueca WY to protect fish sad wildlife resouroeS. 1. A new mitigation the for Plisse 2 shall be proposed to compemsaty for 1.01 acres of wetland impact I A mitigation and mcmitorXg plan steal: be Provided to the Service far review and approval prior to project constructicn• 3- Only native itndigcuous spades aril be utilized at the Mitigation site. Seed mites for erosion Coutrol ntay include sterile species of non-ns'tivc grasses_ 4. Crvated sad swided vm made within tte proposcd project and rnitigtdOn arias stall be pmerved in perpetaily. A conservation ta=ent or other mechanism slash be utilized to ensum their long-terra preservation. Tfiest couunant$bave been pmparr_d wader the Ruzhorit)'of and in accordtncc with the yrovssions of tbc Fish srd Wildlife Ccordination Act(48 STAT_4C 1,as==%dsd, 15 U.S.C.et seq.),tnd other w6critics ttdatiag Department of the Interior coneys fbr environuientzl values- They are also comwtent with the National F,nviroumcntal Policy Act. Thank you for the opportunity to ccnvneut an this m tter. If a pwm t is avcnt mlly issued fbr the alp proposed pcuj cct,"would appreciate a copy of the decixivn document. Shovld you addition:iafornativII,plain cortam Nancy Ere==-Drbbs,of my staff, at(360)753-5835 or at the letterhead addrem. Sincerely, Da d C. �ck Supervisor nbd =c 97-"1329/City of R tton/King a: EPA,Seattle(Roy) -NNTS,Lacey(ca-leer) WM Bellevue(Stoat==) WDFW,Region 4 2 TOTAL F.a: CITY OF RENTON PLANNINGBUILDING/PUBLIC WORKS MEMORANDUM DATE: October 29, 1997 TO: Bob Mahn FROM: Scott Woodbury SUBJECT: EPA Comment Letter to Oakesdale Public Notice for Corps Permit I suggest that we coordinate first with the Corps project manager to get advice on how we address the EPA comment letter. Unless the Corps project manager advises against it, I think a meeting with EPA is necessary for us to work out how we resolve the issues raised in the shortest amount of time and for the least cost. EPA Comment#1. The Section 404(b)(1) Guidelines pertain to evaluation of alternatives, including the proposed action, to show that the proposed action is in fact most appropriate and practicable with respect to the sequencing criteria to first avoid, then minimize, and finally mitigate for wetland impacts. The attached Memorandum of Agreement (MOA) between the Corps and EPA defines the terms appropriate and practicable (see Q7 of the MOA question and answer section). Because of design constraints associated with a road project (design speed, minimum radius, etc) and the fact that Oakesdale was planned well before the Boeing CSTC mitigation, I believe we will be able to satisfy the EPA that the proposed action is most appropriate and practicable. In fact, I thought that an alternatives analysis had been done as part of the draft EIS and provided to the Corps with the JARPA submittal package. EPA Comment#2. The need for phasing will have to be justified in writing. We should also be able to address the issue regarding the appropriateness of the Phase II mitigation site. I personally feel that we have better surface water hydrology available for the Phase II site than Boeing has for the CSTC wetland mitigation. We will need to provide EPA sufficient data to justify use of the Phase II site. EPA Comment#3. The Phase II site is already dedicated open space. We will need to explore with Tom Boyns how to formally establish the north wetland mitigation areas as permanent open space. EPA Comment#4. The consultants will need to revise the seed mix in consultation with EPA. U:OAKS DALE:97-017:S W attachment cc: Ron Straka OCT-29-i997 14:59 FRCM US COE-REGULATORY BRANCH TO 972e5608 P.02 COT-23-97 THU 16:15 EFA REG 10 �EIfiNDS FAX NQ, 2065531775 ?.021C3 Q�p� UNITKO STATES ENVIRONMENTAL PRC TECnON AGENCY REQtOt•1 10 ► • 1200 Sb dh Avenue SeaMe,Washington 98101 Repply to OCT 2 3 M7 Coloaal J=cs K Rigsby District Baer Seattle District. Com of Eng iumn P.O. Box C-3755 Seattle, Washington 98124-225S A'PrN: Chief, Regulatory Branch RE; Public Notice 97-4-01329, City of Renton. September 23, 1997 Dear Colonel Rigsby: Wt have routpieied our :Cvicw of the above referenced public nodoe wbich proposal w axtsad and comple:e the disjunct portions of Dakesdale Avenue S.W. and provide acccis to abuts property. The proposed project would affect a total of 1.32 acres of wetlands by dir"* filling the wetl_apd.5- Jw Ju¢ed this ttrc is a_C}4 aG'C.1 of wctland impact from stmding activities from bridging Springbrook Creek, rear the Duwarzish R-vtr. Renton, Waswngton. After mvicwing the above referemod public notice, the Fnvironmerhd Protection Agency (EPA) has the foliowi%a concerns and comments: EPA is very comemed that wetlands CAttsuvcted as mitigation for a previous nationwide permit are prvpoied for filling under this public notice. We believe this is nm policy to permit the filling of=abed wetlands that are con.%Riared as mitigation under a previous permit. The applicant and Corys zrist demonstrate tint the fIlIM9 of fire 0.24 acres of rnittgation wetlan" is consistent with the Clow Water Ace Section 444(b)(1) Guidsliu". RPA believes fat these constructed wctlwids should be avoided and the agw-ic resourcaa should not be sacrificed because of poor pla=intg by the City of Remon. EPA believes bast the mitigation for both phases should be constructed and =nplcted before the actual road conawxtion bcg and should not be phased as proposed. In addition, we are concerned that the Zjtig OU proposed for Phase II impacts is loc3tsed in a site that is questionable and risky. Placing a syndmdc Uner iu orticr to euaurc hY&0.09y is very risky_ EPA recommends Opw~pn r+a�Avrry�r OCT-2e-1997 15;00 FROM US COE-REGULATORY BRANCH TO 97295608 P.03 .' OCT-23-P THU i 5:'.5 H?A REG 10 W RANDS FAX No. 2085531775 P. 03I03 the applicant find&Wtfu= mitigation site that is naturally bcttcr suitod for wetland construction 'This should increase the likelihood of success. - We recommend the all wetl=d mitigation for this pro),cct be placed in a pern=ent cowgrvation easemtnt and recorded with the COUMY- - The "Wedane Sea!Mix" as identified on sheet 13 captains a m mbcr of uon- nit+yc spccics. EPA x===en&that only native species be used by the aFDii,sat. We uts espwially cancenrd abort °ftrostis alba" and "L,aCas comiculatua" that these species should not be inchidcd in any seed mix used ha this project. Based upon our coacuns and commc= 43 stated above, we cm not conclude that this Mojoa compUgs with the Clean Water Act Section 4040)(I) Qvideli=. Acco=diugly. EPA recommends the permit slot be issued until tk a above issues are resvlvcd to EPA's satisfaction. Should you bAvc =y questions or desire additional coordiaat On concern# this project, plane contact Stayers Rey of my staff at(246) 353-622I. Sincerely, Voantaa. Manager Aquatic Resources Untt cc: Ecology W AF&W NNSFS USFWS MucSdeshoat Tribe Applicant TOTAL P.3:3 tip~ Are o � � J State of Washington OCT 2 1997 DEPARVENT OF FISH AND WILDUFE Mailing Address: 600 Capitol Way N•Olympia,WA 98501-1091 •(360)902-2200,TDD(360)902-2207 Mein Office Location: Natural Resources Building• 1111 Washington Street SE•Olympia,WA October 23, 1997 Mr. Gregg Zimmerman City of Renton 200 Mill Avenue South Renton , Washington 98055 SUBJECT: Hydraulic Project Application - Bridge Construction and Wetland Mitigation - Springbrook Creek Tributary to-the.Black.River, Sections 2 4&2 5 Township 23 North, Range 045 East r WDFW Control No. 97-S1329-01, WRIA 09.0005. Dear Mr_ Zimmerman: As we discussed on the October 9, 199 7 meeting, WDFW will require mitigation for impacts associated with the bridge over Springbrook Creek. The mitigation plan we discussed was the installation of large root wads with the stems in grouping, of two or more at seven locations from SW 16th Street and upstream to the bridge. Until I receive a detailed mitigation plan I cannot continue to process the Hydraulic Project Approval. In addition a landscape plan should be included for areas impacted at the bridge site. However, I have reviewed the wetland mitigation plan from the Corps Notice for both phases for the Oaksdale Avenue extension and the plans will meet meet our wetland mitigation requirements. If you have any questions regarding the status of your application or the mitigation plan, contact me at (425) 391-4365. We appreciate your cooperation in our efforts to protect, perpetuate, and manage the fish and wildlife resources for the state of Washington. Sincerely, Philip Schneider Area Habitat Biologist cc: WDFW, Olympia Bryce Ecklein- Kato & Warren Rod Malcom - Mukelshoot Indian Tribe Ted Muller - WDFW Mill Creek Permit coordinator Unit - DOE Memo Date: October 23, 1997 To: Lin Wilson From: Bryce Ecklein Re: Oakesdale Avenue SW"404"Peanut Status This is the fifteenth status report on progress of the Oakesdale Avenue S.W. "404" Permit submittal. 1. Reached Tom Luster of DOE regarding Water Quality Certification. Tom had apparently thought that the project was discharging to Springbrook Creek Were this the case, he would not issue the water quality certification until such time as the City developed a basin plan to meet the requirements for degraded streams. I assured him that we had modified the drainage approach and had only one section (north of bridge) that would ultimately reach the creek. He said he would re-look at the submittal and confer with others in the Department to determine how to proceed. He committed to responding by Friday, October 24th. 2. Tallied to Phil Snyder of WDF&W. He said by procedure, he will issue a letter to the COE requesting a hold pending satisfaction of HPA requirements. 3. Talked to Jim Green of the Corps on October 23rd and he has received no comments other than NWS stating that they were unable to respond. I informed him of DOE and WDF&W comments and he said that Corps would probably issue a provisional permit as soon as possible to be out of the loop. KATo& W�T T E T 2003 Western tivenue �h(wA}(* �y 5.5511arkcl Place One Tel: 1061448-4200 INCORPORATED Seattle, Washington 98121 Far:2061728-5608 TRANSMITTAL FoRm To: Date: Of: No_ of pages (including cover sheet): Via: Mail ❑ Fax Fax Number_ �`72 courier ❑ From: ( / FedEx ❑ Con Ceuta: 4G ' Comments: Enclosures: cc: C�fortaetramrn�lltrammt�.da ale,:, Rv fr 1v 41 - - --. ___ _ �S �t� ���'�, � Qy' (S�'cAes� ' ��►5-w�i- c�2gt,,, ��es�,ti� d, I •-►n�r Gnu A, wAl f oAr � s r� i Public Notice , US Army Corps ■ v 3 of A li cationof Engineers � � �� Seattle District _ D W M - Regulatory Branch for Permit o i Post Office Box 3755 ` 1, Seattle, Washington 98124-2255 Telephone (206)764-3495 Public Notice Date: 23 September 1997 Expiration Date: 23 October 1997 ATTN: Jim Green, Project Manager Reference: 97-4-01329 Name: Renton, City of Interested parties are hereby notified that an application has been received for a Department of the Army (DA) permit in accordance with Section 404 of the Clean Water Act for certain work described below and shown on the enclosed drawings. APPLICANT - City of Renton 200 Mill Avenue South Renton, Washington 98055 Telephone (425) 277-6223 AGENT - Kato and Warren 2003 Western Avenue Seattle, Washington 98121 ATTN: Mr. Bryce Ecklein Telephone (206) 448-4200 LOCATION - In wetlands adjacent to Springbrook Creek, Duwamish River at Renton, Washington. WORK - Place fill material in wetlands for construction of a road. A total of 1.32 acres of wetlands will be affected by filling and shading activities. Phase 1 of the project will impact 0.31 of an acre of wetlands. Phase 2, if constructed, will impact 1.01 acres of wetlands. Additional Information - The proposed project (Phase 1) includes the filling of 0.24 of an acre of wetlands that were constructed as mitigation for a previous DA nationwide permit (see Permit No. OYB-4-014493, Boeing Company, issued on 13 October 1992) . A two-phased mitigation plan has been proposed by the Applicant to offset the 1.32 acres of wetlands to be lost during the two-phases of construction. The 2nd phase of mitigation will not be implemented if the 2nd phase of construction is not. The mitigation plan includes two mitigation parcels adjacent to the proposed project. The two mitigation parcels would each contribute 2 acres of created wetlands for a total of 4 acres of new wetlands (see sheets 14 and 15 of enclosed drawings) . The mitigation wetlands include a mix of emergent and scrub-shrub/forested habitat and are intended to provide floodwater storage, water quality, and wildlife habitat functions. PURPOSE - To complete the disjunct portions of Oakesdale Avenue S.W. and provide access to abutting property. ENDANGERED SPECIES - A preliminary determination indicates that the activity will not affect endangered or threatened species, or their critical habitat, designated under the Endangered Species Act of 1973 . Formal consultation under Section 7 of the Act is not required. CULTURAL RESOURCES - The District Engineer has reviewed the latest published version of the National Register of Historic Places, lists of properties determined eligible and other sources of information. The following is current knowledge of the presence or absence of historic properties and the effects of the undertaking upon these properties: 1 97-4-01329 There are no recorded historic properties within the permit area. The permit area has been so extensively modified by modern development that little likelihood exists for the proposed project to impinge upon an undisturbed historic property. The District Engineer invites responses to this public notice from Federal, State, and local agencies, historical and archaeological societies, Indian Tribes and other parties likely to have knowledge of or concerns with historic properties in the area. This public notice has been provided to the appropriate State Historic Preservation Officer. PUBLIC HEARING - Any person may request, in writing, within the comment period specified in this notice, that a public hearing be held to consider this applica- tion. Requests for public hearings shall state, with particularity, the reasons for holding a public hearing. EVALUATION - The decision whether to issue a permit will be based on an evaluation of the probable impact, including cumulative impacts of the proposed activity on the public interest. That decision will reflect the national concern for both pro- tection and utilization of important resources. The benefits which reasonably may be expected to accrue from the proposal must be balanced against its reasonably foreseeable detriments. All factors which may be relevant to the proposal will be considered, including the cumulative effects thereof; among those are conservation, economics, aesthetics, general environmental concerns, wetlands, historic proper- ties, fish and wildlife values, flood hazards, floodplain values, land use, naviga- tion, shoreline erosion and accretion, recreation, water supply and conservation, water quality, energy needs, safety, food and fiber production, mineral needs, con- siderations of property ownership, and, in general, the needs and welfare of the people. The Corps of Engineers (Corps) is soliciting comments from the public; Federal, State, and local agencies and officials; Indian tribes; and other interested parties in order to consider and evaluate the impacts of this activity. Any comments received will be considered by the Corps to determine whether to issue, modify, condition or deny a permit for the work. To make this decision, comments are used to assess impacts on endangered species, historic properties, water quality, general environmental effects, and the other public interest factors listed above. Comments are used in the preparation of an Environmental Assessment and/or an Environmental Impact Statement pursuant to the National Environmental Policy Act. Comments are also used to determine the need for a public hearing and to determine the overall public interest of the activity. The evaluation of the impact of the activity on the public interest will include application of the guidelines promulgated by the Administrator, EPA, under authority of Section 404 (b) of the Clean Water Act. ADDITIONAL EVALUATION - The State of Washington is reviewing this work for consis- tency with the approved Washington Coastal Zone Management Program and for Water Quality Certification. This proposal is the subject of a Shorelines Substantial Development Permit Application being processed by the City of Renton. COMMENT AND REVIEW PERIOD - Comments on these factors will be accepted and made part of the record and will be considered in determining whether it would be in the best public interest to grant a permit. Comments should reach this office, Attn: Regulatory Branch, not later than the expiration date of this public notice to ensure consideration and refer to the following name and file number: City of Renton 97-4-01329 Encl Drawings (15) 2 a - ` a Y., • R' lonobde: 122'-13'-36' latitude:47°-27'-1 S' a, i' SEATTT _ BREMERTON �RENTON 00 SW S T �TAC MA OLYMPIA kes i� ; �-� Proyect rr sE °-' N SW Gt Wa WASHINGTON �7- ' O L s \ raN 5 c Ren on 1 f f En Project Strandar Blvd sw 27thl St I c g IcnI SW 34m t _ z Q N o 3t SW 41st a �- 0 18M s SW Al rrl I St Co e Kent �0 181 t 16 97-4-01329 PURPOSE:Complete Roadway and Provide Access to Abuttors Proposed Fill IN:Wetlands adjacent to Springbrook Creek DATUM:NGVD of 1929=0.0' VICINITY MAP AT: City of Renton ADJACENT PROPERTY OWNERS:see sheet 4 of 15 COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET: 1 of 15 DATE:7/11/97 Gt "Mo SW lbtli St g�g Boeing cstt ''°a; RENTON N 09 I 8 0 6 C � O; j� longacresJ Office Pork r 3 SW 27th St TUKWILA o T V k-------- . - :e s¢ 3 3 SW 34th St i 0 0 6 t � W41 st St 81 SW 43rd St KENT 0 1/41/2 1 Legend Mat: Project Area 97-4-01329 Proposed Fil IN:Wetlands adjacent to Spnngbrook Creek PROJECT AREA AT:City of Renton COUNTY: King STATE:Wa APPLICATION BY:City of Renton SHEET: 2 of 15 DATE:7/11/97 •.. •f SW Gco OS SW 1611 St Boeing N (STC RENTON exi �q m load mm 8 a:1 =� ( W 6 Longocres 6 / s Office Park r iwatbnd"C" C :1 1 i • "wetland Q" SW 27th St Boeieg sautk Mrsh wedond"r TUKWILA vac•• as a �`.�;';�,. \ wetland"r \ SW 34th St wetted"G 3 6 SW 41st St t y� C 81 SW 43rd St KENT 0 1/4 1/2 1 .. 97-4-01329 Mks Legend Proposed Fill IN:Wetlands adjacent to Springbrook Creek proposed alignment AT:City of Renton i, existing wetlands PROJECT AREA WETLANDS COUNTY:Kin STATE:Wa mitigation sites g O key sheet APPLICATION BY:City of Renton SHEET: 3 of 15 DATE:7/11/97 Name .,r.:• w (1) The Boeing Company os Attn.: Rick Ford sw 16ik (2) Benaroya Capital ` O Company O au I RENTON (3) The Boeing Company j ------ Attn.: Rick Ford b { 3 a 6 (4) City of Renton i of&.Nk j (5) Allpak Corporation i i ' s (6) City of Renton TUKrviu (7) City of Renton (8) Atcheson,Topeka& ± O Santa Fe y (9) Alchcson,Topeka& y f 6 Santa Fe (10) King County Drainage Dist.No. 1 Legend Attn.: Jack Nelson, e7 Attorney Nole l Area OwnershlP (11)Seattle Public* ® IdentiNcohon Utilities Real Estate ° fA fn f KENT Services w„ *not shown on map 97.4-01329 Proposed Fill IN:Wetlands adjacent to Springbrook Creek PROPERTY OWNERSHIP AT:City of Renton COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET: 4 of 15 DATE:7/11/97 N u `` u U I o d c PR AN HE 80E N r CO. a THE- EING O. FILL AC L ?!CY GRAM 6ASE COURSES PROPOSED STORM WATER — CONVEYANCE DISCHARGE POINT \\ �` T E BOEING CO. PROPOSED EXTENSION OF \ I OAKESDALE AVENUE SW PROXCT kTLAND C 1 (Emergent) i • I / I PROPOSED WATER / 'J' QUALITY POND WETLAND BOUNDARY (TYP.) THE BOEING CO. ° � I CITY OF RENTON j / J PROJECT WETLAND C / (Emergent) - - - . EROSION CONTROL MEASURES .i. t. SILT FENCE LOCATED OUTSIDE CUT/FILL SLOPES AND ALONG PERIMETER OF SENSITIVE AREAS. �' j 2. TEMPORARY COVER OF ALL EXPOSED SLOPES _I DURING CONSTRUTION. Vertical Ootum: NGVD 1929 \� PERMANENT SEEDING OF ALL SLOPED AREAS UPON SCALE FEET c PLETION-OF-WIORK 4. DUST CONTROL PRACTICES OURIfVG--CON UCTION. b \� 5. -VEGETATIVE-AND-STRUM-6AL STREAMBANK / �� STABILIZATION METHODS FOR OftHESXNO'STReAA:-- 0 5Q 100___ 6. OUTLET PROTECTION AT CONVEYANCE OUTFALL LOCATIONS. 97-4-01329 Proposed Fill IN:Wetlands adjacent to Springbrook Creek PLANS AT:City of Renton COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET: 6 of 15 DATE:7/11/97 0 \ \ I 1 I EROSION CONTROL MEASURES 1�WETLA VI BOUNDARY (T ) I1. SILT FENCE LOCATED OUTSIDE CUT/x I. SLOPES AND ALONG PERIMETER OF SENSITIVEI EAS. \ 21- TEMPORARY COVER OF ALL I EX,OSE,O! DPES DURING,COW 1 E EARTH RETA I TABI(JZEp� J. PERMANENT SEEDINfI'OFl01 'ALl' SLOPED AREAS UP \1 EARTH RETAINI WALL I OMPU� a \ 4. DUST CONTROL PRACTICES DURING CONSTRUC \ THE BOEING CO. 5. VEGETATIVE AND STRUCTURAL STREAMBANK PROPOSED EXTENSION OF STABILIZATION METHODS FOR DITCHES AND SIR / OAKESDALE AVENUE SW 6. OUTLET PROTECTION AT CONVEYANCE OUTFAL L 1 � � / • fJot-e a Tb.�st w a:kla� cov�s•�•rw-c.�scE I' j PROPOSED WETLAND �s — �-C-1&-A-to, F-e�r y FILL 0.240 AC Qcrr•.: r.�. DKQ'q -d14443 1 1 4 CY OAVEL BASE Foe PROPOSED BRIDGE P ° END PHASE 1 ��. MECH 1 ABIUZED - -`��� AR AINING WALL CONSTRLI ON 1 0 °ooBD / A Odd 1 0 8® MECHANI LL S WED 0 ° CSTC MITIGA TLANO oe EARTH R LAIN 11 Gee 0 ,1 OOK o 1 i b( ° o THE EING i� -- - - YA_INC_- -- - WEILANO BOUNDARY(TYP.) / <\•nQ o 0. � c o >� MECHANICALLY STABILIZED j EARTH RETAINING WALL Vertical Datum: NGVD 1929 � � �,:' /' � - ram, SCALE FEET WETL+ BOUND YP.) � 97-4-01329 BENAROYA N . 0 50 100 r � -_ Proposed Fill IN:Wetlands adjacent to Springbrook Creek PLANS AT:City of Renton COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET: 7 of 15 DATE:7/11/97 WETLAND F BOUNDARY 45f (Emergent Scrub shrub) ROADWAY MECHANICALLY STABILIZED EARTH RETAINING WALL TYP. 18 , — 18 16 _ INN 16 14 4 12 _ 12 10 10 -60 -40 -20 0 20 40 60 80 SECTION A-A EXISTING CONSTRUCTED CSTC 36't WETLAND BOUNDARY ROADWAY MECHANICALLY STABILIZED EARTH RETAINING WALL 26 26 24 — 24 22 �- 22 20 20 18 18 16 IS3TNG � 16 2 XISTING- F T 16 14 12 10 -ROUND _ _ � 10 8 8 6 - 6 -60 -40 -20 0 20 40 60 80 SECTION B-B PROPOSED BRIDGE Wetland between Ordinary Hiah Water and Min. Clearance - 2) 28 EI. 10.0 (Forbs. Shrubs. and Trees) 28 26 - — _ 26 24. 24 22 ---- - - -- _ - 22 20 = 20 18, 18 16— --- 16 14 -V 14 12: 1.�- 12 10 8 PROPOSE g. �.SIDRAG!<EL-J'3_II--'S' i g.GRADE-7 — — 6 4- 4 2 roil-to-be-located ' - 0-on-bench. EXISTING- 0 -2 -GROUND -2 -4 — -4 1. 10� 0 20 40 60 80 100 120 140 160 Limits of *Note: Proposed grade at bridge crossing occomodotes necessary changes \Wetlond to support City of Renton East Side Green River Watershed Project. SCALE FEET SECTION C-C 1. 4 OHW 1J, Note: 2.1 Vertical Exaggeration 0 15 30 Vertical Datum: NGV0 1929 DETAIL 97-4-01329 Proposed Fill IN:Wetlands adjacent to Springbrook Creek CROSS SECTIONS AT:City of Renton COUNTY:IGng STATE:Wa APPLICATION BY:City of Renton SHEET: 8 of 15 DATE:7/11/97 WEIR I ' LOCATION' 1/ ELEV 18 TOP OF WEIR '7� 'DITCH;FLOW .LINE ELEV 17.5 WEIR LOCATION • ELEV 19 TOP OF WEIR (� DITCH FLOW ' + 1 , , LINE N' ;��, ♦ . . . , ELEV 17.5 • , ♦ • ♦ , + ( ♦ + + • . ' . ' ' •I �. • . a . I Norm LEGEND '00 ScAr-: 1-.100• 18 PROPOSED CONTOUR 22 EXISTING CONTOUR ' WETLANO EDGE EXISTING WETLAND 'G' --------------LIMIT OF CONSTRUCTION \\\\\ HAN SHRUB OMSED MUNTED�SCRUB- PROPOSED FORESTED/SCRUB-SHRUB SHRUB COMMUNITY ' WETLAND COMMUNITY (PFO/PSS) "•- PROPOSED UPLAND BUFFER + + + PROPOSED EMERGENT WETLAND COMMUNITY (PEM) DATUM: NAVD 1988 97-4-01329 NA5 t Proposed Fill IN:Wetlands adjacent to Springbrook Creek SOUTH MITIGATION PLAN AT:City of Renton COUNTY:IGng STATE:Wa APPLICATION BY:City of Renton SHEET: 9 of 15 DATE:7/11/97 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0M 0 0 0 0 0 0 9 n 1 0 CP 0 9__0__00- uu 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 00 D I ALE A AVE.V .0 - W. Z. 7t ZZ, z Z Z ZZI 111z1111v %Z, I IZ %% is .............. "Izz% ....... 1z % N 11— Z % ZZ1%, z1Z %+ + + + + + LEGEND z % Z%,Z % Z%1Z,ZZ 11111z ........ + z %% '�'%,ZZZZZZ'%IZZ1�1zZNIZ 11, 1 %, 11 PROPOSED CONTOUR L EXISTING CONTOUR ZZZ "IZZzZi. ♦ "%11%%% % ZZZZZI%' I'll EXISTING WETLAND BOUNDARY %I *zzz I% Z% ........ FORESTED/SCRUB—SHRUB ............i WETLAND COMMUNITY .............. (PFO/PSS) EMERGENT WETLAND . . . . COMMUNITY (PEM) 0 50 100 * , --------%_ o® SCALE: I'-100 EXISTING WETLANDS "C" & "D" 97-4-01329 PHASE :r- Proposed Fill ENHANCED WETLAND— NORTH MITIGATION PLAN IN:Wetlands adjacent to Springbrook Creek FORESTED/SCRUB—SHRUB AT:City of Renton COMMUNITY COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET. 10 of 15 DATE:7/11/97 EXISTING GRADE \ PROPOSED GRADE c UPLAND PFO PSS PFO/PSS PFO/PSS BUFFER COMMUNITY PEM COMMUNITY COMMUNITY PEM COMMUNITY COMMUNITY ELEV 20+ ELEV 17-20 ELEV 15.5-17 ELEV 17-20 ELEV 15.5-17 ELEV 17-20 SECTION A-A (REFER TO SHEET 9) scale: horizontal 1"=50' vertical 1"=25' DATUM: NAVD 1988 EXISTING GRADE PROPOSED GRADE •—————————————————————————————— ———————_———i PFO/PSS COMMUNITY PEM COMMUNITY PFO/PSS COMMUNITY ELEV 11-14 ELEV 10.5-11 ELEV 11-15 SECTION B-B (REFER TO SHEET 10) scale: horizontal 1"=50' vertical 1"=25' DATUM: NGVD 1929 97-4-01329 Proposed Fill IN:Wetlands adjacent to Springbrook Creek MITIGATION CROSS SECTIONS AT:City of Renton COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET: 11 of 15 DATE:7/11/97 EXISTING GRADE PROPOSED GRADE (APPROX. 5.500 CY EXCAVATION) OAKESDALE AVE. i PFO/PSS COMMUNITY PEM COMMUNITY PFO/PSS COMMUNITY ELEV 11-13.5 ELEV 10.5-11 ELEV 11-13.5 STORMWATER WETLAND WATER QUALITY MITIGATION SECTION C-C (REFER TO SHEET 10) scale: horizontal 1"=50' vertical 1'=25' DATUM: NGVD 1929 EXISTING GRADE (APPROX. 1,400 CY EXCAVATION) PROPOSED GRADE OAKESDALE AVE. ---------- i T PFO/PSS COMMUNITY EXISTING WETLAND ELEV 12.5-14 ELEV 14 STORMWATER WETLAND SECTION D-D (REFER TO SHEET 10) WATER QUALITY MITIGATION scale: horizontal 1*=50' vertical 1'=25' DATUM: NGVD 1929 97-4-01329 Proposed Fill IN:Wetlands adjacent to Springbrook Creek MITIGATION CROSS SECTIONS AT:City of Renton COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET: 12 of 15 DATE:7/11/97 _........................buffer .....PFO _.....PSS PEM _ _ _ ISelentl}le Name »—r'ammon Name Plentlnc ntlna Ptentlne Planting _—fin__..- ...Soneina_: ITrsea: i Acer macro h Ilum :Bi Leaf Maple X — —....... ............................». ...................i .....................A...Y...............:....9 ...._....................._................_........» __............. _._._..............:.._._. i 8' to o.e....., ...............__..............._........... 'Alnus rubra Red Alder {..................................._._........._........_........... .............. X._...»......._..._......._._.....................»..8...-. Fraxinus latifolia :O nAsh "a ................. Mahrs fusee Westem CrabapP�e _ —_.__.. _ Populus trichocarpa _ Black C-z=nwood _ X X 18'_ to o.c. _... _...__.. ._ _......__. ........ ..._..............._. Plcea sitchensis :Sitka Spruce X ___... —..... ._.............. _.._..._ I Pseudotsuga menziesli Oauglas.Fir.....____. X - t g to o.c. _. 1 ..... _........_..........»:_......... �Thuja.plkan.. .— 4Vastam AeC,Ceaar _..... ---------X...._ .__. X..._— __._ __... ..._.........._ .:._._1 8*_.... . Tsuga-Ae?arophylla Western Hemlock X___ 18' 10' o,c, _..........._. ._._....................................:........__..__:.._.................. _............... . ._ __..... ___ ».-..»_. ._ _. ._.. _ .._—.—_.._...._._...... »..__... _ .._ __... _ _._.. Acer crcinatum Vlna Maple.. ..._. _.. »M X_..... _._.._......... .......................... 18• o.e. ............................ n... ........_ _.— .—.. . ....3._ Comps senate 'Red Osier Dogwood _ X X........ Lonicera involucrata Black Twinbe?Y _._._....... ......__. .... .3' ff Mews fuse _ Crabapp —_ X X O.C. _3 o.c. _._........._._ __. Westem_..........le _. �: ......»_.. _._._....._....._ _._...__. .._ _. Physoearpus ppitatus_— Paeitie Ninebark X-•.___ X __ —___. 1 8• 3'o.c. t .......... Rosa nutkana hl000ka Boas—,, �— _�_X„ X_ _.�__. _._ .». »._..._18 3'o.c. _..._.......____..»__._.......... M. .»_............ Rosa.pis...r. -- Clustered VYlid Roas........ -- i X X 18• 3 G.C. RuDua aMfloNs Thimbleber X RuDus spactaDflfa.._.._._ Sa.m....9 5!..._. _....X __ .—X._..... ......._.x t 8' 9 O.C. ........._...._._.... lSallx laslandra Pacific Willow -- »_ Salix,se?utenans Seculars Willow —_ •---» •••••• ••••_3..a,c......._ ........ . ...................._....._..................................._.... ......_.._ _...... _ _...._...:...._._.X..»....._.................._».. ..-_..........7',o.c....... Saltx sitcnensu Sitka Wttlow .. LS ............____—.. _....._..»._.__ _... .. _... ..—...—_................ .........:..__....»� ...— _..... ».._3.�:5...... Samnueus neemosa Red.Elderoerry......._.__.._...._._X t 8' 3 o........ Sympnariearyos_aiDus Common Snowberry................X...... ._ ._._ ..................... . t 8' 3 o.c._.__.._...._._._...__........ ....._............_.. ........ ....... r ....._...._._........................:.........................................................._........_..__.....»....._...................................................................._.....................: Emer entalForba: obnupta..._....... ... _._._ ....._ _._........__..__..._............... l!Cue: spP?w........._. Sawoeak 5ea94......_...._......_...»......... ___—...—.._._...................................._X......_...... Me ctaria patusrns-•• •__2 t'.ommon Spilc�Rush _ X a�.pot... t8' o.e. _._..---_.._............................................__. _....._............_.. !Juntas balanced 'Balancers Rush X 3• pat„•..•...•18'_•?.:. ................._..... ...r...... ....._........_......_............_.__._.............:................................ ...... Juncus ansifollus•-, _Daggeraeaf•Rusn - X 4• pot 18',•o.c. _..._......._..._.._..._...................................................................................... Conanns samrantosa or-Parsley. .........._..._. _..._.. . ..•...p....... ..... . ......._W ...... ... _..»_..._..............................-•---...... . ................ .a..t.............1.8.'...o...e....... Sarpas•status _ HaMsnm ............... X a' at 18 o e P iAclrpus mcrocarpys ......_Smati-fruitee..Bulrusn __ ._. X °�.p9t............?$'..o.e....i ..... ..._.........................._........_.......... . ....._. i Wetland Se Mix:_ ............... ............................................................ .. ............... . ..._.........................................�..�Y...�Agrostis--alga-............._..». .... .Radtop.Bentgrasa....................._..__.__ _ -X.»_... _....._ .................... ..._._....................80.......... ,Abpxvrw genieutatus••-Water Fax1Ll .................... X X X 20 FFestuca ruara Red Fescue �... ___.X _. X X t 0 Glycem_alata Tao Manna Grass X X X 20 IGlyceriaoctidentatia ............... .. ......... M... —._ —._..... _._—............... _......................»......._._................... ILo -comteutatus Birdstoot•,Trefod X _ X. X 10.. . ..... ..........._.._.. ...__ ___.._.._.. .... . �. _..... _.__..__..............—..--................_..=^.. __»_— --__ .... Upland Seed Mix: DY iA math tMtria .(rOlOnral BM X LFestuea_rpOra....— ._RsG Fe?ar!.._.»..--_ X. __._ ...._;. __._._.......--_—._.. ._. ... 49..__... �LoBurit mWdfbntm.•-,_,_ Mnuar tees... —.�..X 40 l tTrifolikun,nparta White Clover X _.10. r-.._.._.... ...___.. ... .........._...._...__._........__...... ...»_.............—..»........__....._..._.__. ._.... loxan Centel _— _ ..._........._..:.—...._..._._.__...._... _..� — _—_—_ _...._._._......__......__..._..»....__ LS live stake wt . welent PFO.pahutrtna!crested wettanC .......»... PEM.pakratnna.arrNrgeru_vngand._»..._..�,,...... : j ;note: plants.,trill Oa_•looted in lntormal_groupings, of Itks�paelp_ 97-4-01329 Proposed Fill IN:Wetlands adjacent to Springbrook Creek PLANT MATERIALS L1ST AT:City of Renton COUNTY:IGng STATE:Wa APPLICATION BY.-City of Renton SHEET. 13 of 15 DATE:7/11/97 A. INTRODUCTION The City of Renton proposes to build a roadway to connect the disjunct portions of Oakesdale Avenue S.W. located in Renton,Washington (Township 23 North, Range 4 East, Sections 24 and 25). The proposed roadway would be constructed from S.W. 16th Street to S.W. 31st Street. The project would be completed in two phases. Phase I would be completed from S.W. 16th Street to S.W. 27th Street. Phase II would be completed at a later date depending upon funding. At the northern end of the project a bridge would be constructed over Springbrook Creek. Stormwater retention and treatment facilities would be constructed to meet water quality regulations. B. IMPACTS OF OAKESDALE AVENUE S.W. EXTENSION 4- O 14493) (see Fzle The project would impact 1.32 acres of palustrine etlands. This includes shading of 0.04 acres of emergent wetlands associated with Springbrook Creek,,*filling 0.24 acres of emergent r+S4c1o �cv�wetlands on the Boeing CSTC property, filling 0.03 acres of emergent wetland, and filling of 1.01 acres of scrub-shrub wetland associated with the Phase II portion of the project. The wetlands that would be affected by the project have been assessed as having a range of functional values (Repert Method). The Phase I wetlands were rated as having low to moderate functional values, while the scrub-shrub wetlands associated with Phase II are assessed as having moderate to high functional values. Wetland functions that would be lost as a result of the proposed roadway construction include flood storage, water quality improvement, and wildlife habitat. Two mitigation parcels will be used to create wetlands in accordance with the City of Renton regulations. The first parcel is located adjacent to the proposed roadway, in the southern half of the Phase I portion of the project. The second mitigation parcel is located immediately west of the southern terminus of the Phase II portion of the project. C. MITIGATION PLAN The proposed wetland mitigation plan for the Oakesdale Avenue S.W. project has been designed to achieve a net gain in wetland functions and to achieve the general goals of the City of Renton's wetland regulations. The two mitigation parcels each would contribute 2 acres of created wetland for a total of 4 acres of new wetland. The approximate size of each habitat component is listed below. Habitat Acres Emergent 0.56 Scrub-shrub/Forested 3-60 Total 4.16 The Phase I mitigation site would create wetlands that would lie between the proposed water quality drainage swales and an existing wetland. Currently the Phase I site is a mixture of upland grasses and Himalaya blackberry that slopes to the east and eventually into the existing reed canarygrass dominated wetland. The created wetland would include a mix of emergent and shrub- scrub habitat components. The created wetlands are designed to receive water from the proposed water quality discharge swales and the adjacent existing wetland. tk The 0.0+ aCrf5 Of ►nA Ct 06W4AW WA br'a iA fins Sp mr 97-4-01329 Cruh includ�5 Qxc� too. of fk haak alid thl , g r �'uct5 Cult, Shttt � u f 15� Proposed Fill IN:Wetlands adjacent to Springbrook Creek NARRATIVE AT:City of Renton COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET: 14 of 15 DATE:7/11/97 The Phase II mitigation site would receive water from an existing drainage ditch. Water would be routed through the existing wetland, into the mitigation site, and then back to the ditch. The Phase II mitigation site is dominated by fill material and weedy herbaceous species and is adjacent to existing scrub-shrub wetlands. To ensure adequate hydrology, a liner is included in the design of the Phase II site. The Phase II wetland area is designed to include components of emergent and scrub-shrub/forested habitat. A work plan, performance standards, monitoring plan, and contingency plan will be developed to ensure that specifications of this mitigation plan are successfully executed and that its overall goals are attained. Mitigation wetlands are expected to achieve a net gain in wetland functions within five years, and qualitatively higher functions within 7 years. E. SUMMARY The Oakesdale Avenue S.W. Extension Project would compensate for the loss of 1.32 acres of wetland by creating 4.0 acres of wetland on two parcels of 2.0 acres each. Mitigation wetlands include a diverse mix of emergent and scrub-shrub/forested habitat. The design plan accounts for the soils and hydrologic conditions of each site and the linking of adjacent wetland habitat. Floodwater storage, water quality, and wildlife habitat are some of the functions that will be served by the created wetlands. 97-4-01329 Proposed Fill IN:Wetlands adjacent to Springbrook Creek NARRATIVE AT:City of Renton COUNTY:Kng STATE:Wa APPLICATION BY:City of Renton SHEET. 15 of 15 DATE:7/11/97 �aE surr . � 2 ds, JY 1 1l89� STATE OF WASHINCTON DEPARTMENT OF ECOLOGY Marl Stop PV-71 • Olympia, Washington 98504-8777 • (206) 459-6000 STATE OF WASHINGTON DEPARTMENT OF ECOLOGY Notice of Application for Water Quality Certification and for Certification of Consistency with the Washington Coastal Zone Management Program Date: ?1 gp�tamhar 1997 Notice is hereby given that a request has been filed with the Department of Ecology, pursuant to the requirements of Section 401 of the federal Clean Water Act of 1977 (PL 95-217) , to certify that the project described in the Corps of Engineers Public Notice No. 97-4-01329 will comply with Sections 301, 302, 303, 306, and 307 of the Act, and with applicable provisions of State and Federal water pollution control laws. Notice is also given that a request has been filed with the Department of Ecology, pursuant to the requirements of Section 307(c) of the federal Coastal Zone Management Act of 1972 (16 U.S.C. 1451) , to certify that the above- referenced project will comply with the Washington State Coastal Zone Management Program and that the project will be conducted in a manner consistent with that Program. Any person desiring to present views pertaining to the project on either or both (1) compliance with water pollution control laws or (2) the project's compliance or consistency with the Washington State Coastal Zone Management Program may do so by providing written comments within 30 days of the above publication date to: Permit Coordination Unit Department of Ecology P.O. Box 47703 Olympia, WA 98504-7703 18 .-4E-U 3 .A• M 09/26/1997 16: 19 206-728-5608 KATO & WARREN INC. PAGE 01 KATO WARREN � 2003 Western Plat Avenue SSS rVtarket Place One rel: 106/948-4200 INCORPORATED Seattle, Washington 98121 Far: 2061728-3608 TRANSMITTAL FORM To: �c � w A f,4vx I 9 LAti• Date: 'Zt-' °► Of: No. of pages rincluding cover sheet): Via: Mail ❑ Fax Fax Number: Courier ❑ From: FedEx ❑ Contents: Post-it'Fax Note 7671 Dater/17 r 9 p8ogl.. i �� From cori R-rct FfCC� ^� To Gl�r9��✓ Co./Dept. Co. Phone# Phone# y �- 2 a J Fax# Fax* 7 2 F S6 v , Comments: ' Ze4 , C z. - W 11r3 O�d � i- U�,�u��4��1 li►�► l`r/Y Enclosures: cc• Y.t'&W.-I1I13l96 C:forms h7msmiflt2nsmt Ldao L4fou *Orr d 0"_y 44��, nti� ���r�` �1 Jed � �`•�, r ` � ar c�a �„� Pie h,�►,-h.�i W-� __ ___----- _ . _I �-�� w'� ��1dS Cry U. C�, ,,. f ��,cG�,y ✓ ;l �o��S �tiilp�iC �it,a1'Ice fS' !H �%. � � ��'I�l�' C.nrn��''`� _ .__ _-. _ --_ � �S 'l WS � 2N`1.J�C/� - J�/� t^'lal/hG9i+ ___ ___-_ ��� __ __ _- _ . i _ _ . o (Sat,.m,4ee AP,9q7 gls'�rlfl U , 11)5 1214 c4uved k LA 0 J /�r�/'uv�yr•.4•�'. � (,trru �,UcJC.. /�� �*tif 0� l w .� o� s Oakesdale Ave Phase lA -- SW 16 to SW 27 # Task Start Duration End 1996 1997 1998 Dec Jan Feb Mar Apr M v Jun Jul Au q, e Oct Nov Dec an Feb Mar A Ma Jun Jul A Se ........ .......... ............................ . ... .............. ...... .. ............. ........... .. ..... SEEM 1 ti: :::::._:::::::....;...: c:. 2 ..... . . . . . . . . ........................... ................ :.:.:.. . ..:::.. . ?kid..:':.':: .:::: ....c.................=...:tl.•:.:.::..:.:.:.:.:...:.:..i.i.�.l.....-......' ` i `•.. ::::::...:::::::.. . f 13Ql ` : k f'` . 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Y.= �y,•I•• ••• ••y•. •••• :•.Y:ti•.\titiLtit::•::tifY::•:.\ti•}•::'L• L•:L:L`.L. ii7 i:J•::'• i:i :�Ii •.`.y.N1:•:.:L•.LL•.Y.L•::.L:•.\V.tiY :LL.LLL•.::.:1VQ..; + :'' :Y i.�77�}:•' .�•M�Y.�iVl�`!(•J.• 1 Y.L.:.t:`.:::::•.'::::::.:�.�.'.L�::::::•.::Y::.:•::.::::::::•:::::::: :ti4�.:;.L L.•::: :.:..: 6 17A Update Bridge Design Plans 60%submittal Jul-25-97 25.00 d A -28-97 Wims 17A 17B Pre-final PS&E submittal 95% Jul-25-97 45.00 d S 26-97 100010101001M 17B 17C Final PS&E submittal 100% S 29-97 35.00 d Nov-17-97 1 C 19 1 Community Involvement Feb-03-97 200.00 d Nov-14-97 1 20 Coord.with Valley Drainage Improvements Jun-16-97 105.00 d Nov-12-97 20 21 Coord. with Boeing Longacres Office Park Jun-16-97 105.00 d Nov-12-97 21 22 Coord. with Hunter-Douglas project Jun-16-97 105.00 d Nov-12-97 22 23 Relocate Puget overhead facilities Feb-03-97 240.00 d Jan-14-98 23 i 24 Right-of-Way Plans Jun-16-97 39.00 d Au -08-97 - 24 25 Boeing ROW Dedication Activities A -11-97 60.00 d Nov-03-97 25 25A Seattle W.D.ROW Acquisition Acti,.ities Aug-1 1-97 60.00 d Nov-03-97 25A 26 Other ROW Acquisition Activities A -11-97 60.00 d Nov-03-97 26 27 Prepare TIB/TIA Construction Prospectus Oct-13-97 12.00 d Oct-28-97 27 28 TIB/TIA Construction S Approval Oct-29-97 20.00 d Nov 26-97 28 29 Advertise Dec-04-97 23.00 d Jan-07-98 SEEMS 29 30 Award, execute contract Jan-08-98 40.00 d Mar-06-98 30 31 Construction, SW 16 to SW 27 Mar-11-98 145.W d Oct-01-98 Printed: Aug-21-97 Page 1 City of Renton Oakesdale Avenue, S.W. "Section 404" Public Notice Graphics (Condensed Version) Ev1ER n,RENTON gitude: 122° 13'-36" N itude:47°-27'-15" j SEATTLE BREMERTON Y SW $4n SITE �f , s •TAC MA -�/ •OLYMPIA kes ` i� SITE Project Wa - �l �iad 4 WASHINGT ON \/ 7 � 405 Ren on r BN . C-- 18En. 167 Pro"ect �\ Strande Blvd i SW 27th St I o a. d co r �I:3 Cn Q SW:34tt, St z ¢ c M n, N o ern w a N 3 s 160th S 5 � Kent 97-4-01329 PURPOSE:Complete Roadway and Provide Access to Abuttors Proposed Fill DATUM:NGVD of 1929=0.0' IN:Wetlands adjacent to Springbrook Creek ADJACENT PROPERTY OWNERS: VICINITY MAP AT:City of Renton see sheet 4 of 15 COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET. 1 of 15 DATE:7/11/97 SW 16th St Boeing °• RENTON Q (STC N J: .,_�....�-jam IA = Ncc -n W T i Q .mom 81 0 6 o Proposed = W ` longacres � Office Park o �z a "s) •, SW 27th St TUKWILA •� � � '• :O O d: G O O ` 3 3 > SW 34th St Q d 6 0 SW 41 st St SW 43rd St KENT 0 1/41/2 1 Legend Miles Project Area 97-4-01329 Proposed Fill IN:Wetlands adjacent to Springbrook Creek PROJECT AREA AT:City of Renton COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET. 2 of 15 DATE:7/11/97 �;;,9 Sw Giad'I Wa`I .ram 05 SW 16th St r Boeing , 4 S (STc RENTON a--- _ 7 existing ' constructed ,4 wetlands 81 0 b N Proposed W longacres / wetland Office Park 6 `�" 'a�� 2 b z .«* wetland V SW 27th St m t Boeing south marsh t y i'�*' '' <`'E—weCland"E„ TUKWILA d �',,`�,,''4� 'r�`w.. �'.•. wetland T' -E; m 3 SW 34th St wetland V N 6 J. e. d 0 .o 0 W 41 st St 81 i SW 43rd St i I ` KENT 0 1/4^1/2 1 97-4-01329 Legend Miles ProposedFill IN:Wetlands adjacent to Springbrook Creek proposed alignment AT:City of Renton s� existing wetlands PROJECT AREA WETLANDS 7y�r mitigation sites COUNTY:King STATE:Wa 0 key sheet APPLICATION BY.City of Renton SHEET. 3 of 15 DATE:7/11/97 Name w (1) The Boeing Company os Attn.: Rick Ford r . sw 161k s, (2) Benaroya Capital 4 O r Boeing CompanyO csrc .. RENTON (3) The Boeing Company Attn.: Rick Ford r 3 y 8 " Pr sed r 6 Na x longwits I (4) City of Renton ; Office Pork sc (5) Allpak Corporation = r.= 5SW 27th St TUKWILA ` (6) City of Renton 0 -- (7) City of Renton _ s tt Az ro (8) Atchcson,Topeka& J0SW 34th it Santa Fe --� (9) Atchcson,Topeka& ' 6 Santa Fc (10) King County Drainage Dist.No. I Legend SW 4 1 it St Attn.: Jack Nelson, e Attorney Pro;ecr Area .. . ® Ownership (11)Seattle Public* Identification Utilities Real Estate o y4r---,1/2 - KENT Services Mats *not shown on map 97-4-01329 Proposed Fill IN:Wetlands adjacent to Springbrook Creek PROPERTY OWNERSHIP AT:City of Renton COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET: 4 of 15 DATE:7/11/97 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . THE -BOEING . . . . . . CITY OF RENTON . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . EXISTING OAKESDALE PROPOSED EXTENSION AVENUE SW OAKESDALE AVENUE SW �—iJEtHAW�ALL? S'AaILI'ZED' __vm�_'A- - / ' Y . . . . . . . . . . . . . . . . . . . . . . . . ---EAl�TH._RF_1AINffiTJ"WALL' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PR P ED AND . . . . . . . . . . . . . . . .. . 0 �J . . . . . . . . . . . . . . . . .FILL (1.01 -AC-) - - - - - - A- - - - - - - - - - - (4.500 CY GRAVEL.BASE ZWRSES). . .. . . . . . . . . . . . . . - - - - - - -MECHANICALLY STABILIZED - - - EARTH.RETAINING.WALL - . . -) P,—) I Ln . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ld'.� .I �E PROJECT V;ETLAI4D'F ' ' Q.r N . . . . . . . - - - - - - - - - - - - - - - - - - - (Emergent 9cru'b 'Shrub) a-Z.,-, . . . . . . . . . . \ . . . . . . . . . . . . . . . . . . . . . . . . . . . - - - - - - L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . J u WETLAND BOUNDARY (TYP.) CITY OF RENTON) ct CITY OF RENTON) CITY OF RENTON) EROSION CONTROL MEASURE 1. SILT FENCE LOCATED OUTSIDE CUT/FILL SLOPES AND ALONG PERIMETER OF SENSITIVE AREAS. 2. TEMPORARY COVER OF ALL EXPOSED SLOPES DURING CONSTRUTION. Vertical Datum: NGW 1929 3. PERMANENT SEEDING OF ALL SLOPED AREAS UPON SCALE FEET COMPLETION OF WORK. 4. DUST CONTROL PRACTICES DURING CONSTRUCTION. 5. VEGETATIVE AND STRUCTURAL STREAMBANK STABILIZATION METHODS FOR DITCHES AND STREAM, O 75 15P 6. OUTLET PROTEC77ON AT CONVEYANCE OUTFALL LOCATION 97-4-01329 Proposed Fill PLANS IN:Wetlands adjacent to Springbrook Creek AT:City of Renton COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET. 5 of 15 DATE:7/11/97 \ u ® HE BOE N, CO. I I HE-8 EING 0. °PROPOSE LANDL ° I FILL (0.026 2J Cy GRAVEL .N . PROPOSED STORM WATER CONVEYANCE DISCHARGE POINT -- o T E BOEING CO. PROPOSED EXTENSION OF ` \ I- OAKESOALE AVENUE SW PROJECT WETLAND C 1 (Emergent) I 1 - ' I PROPOSED WATER / / I QUALITY POND WETLAND BOUNDARY (TYP.) THE BOEING CO. � - CITY OF RENTON �'` i } 1 J PROJECT WETLAND C 1 - - - (Emergent) - - - - 1 J _ _ \ - _ . _ , \ EROSION CONTROL MEASURES 1. SILT FENCE LOCATED OUTSIDE CUT/FILL SLOPES AND ALONG PERIMETER OF SENSITIVE AREAS. 2. TEMPORARY COVER OF ALL EXPOSED SLOPES DURING CONSTRUTION. Vertical Datum: NGVD 929 ''L— _._J._._ PERMANENT SEEDING OF ALL SLOPED AREAS UPON �. . . ! COAaPCE710N'OF-WORK.___ SCALE FEET 4. OUST CONTROL PRACTICES DURING CONSTRUCTION. . _ . . �S--VfGETAAVFAND-STRUCTURAL_STREAMBANK , , 6 - ��\ STABILIZATION METHODS FOR DITCHES_AND-STREAM.-------. O 5 0 6. OUTLET PROTECTION AT CONVEYANCE OUTFALL LOCATIONS. 97-4-01329 Proposed Fill IN:Wetlands adjacent to Springbrook Creek PLANS AT:City of Renton COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET: 6 of 15 DATE:7/11/97 ,J - �: O t \ I EROSION CONTROL MEASURES WETLA BOUNDARY ( ) 1. SILT FENCE LOCATED OUTSIDE CUT/FI L SLOPES 1 AND ALONG PERIMETER OF SENSITIVE AREAS. Z' TEMPORARY COVER OF ALL EXPOSED SLOPES DURING CONSTRUTION. 1 ECHANICALLY TABI(1ZED 3. PERMANENT SEEDING OF'ALL SLOPED AREAS UPO a EARTH RETAINI WALL COMPLETION—OF—WORK.-- — 4. DUST CONTROL PRACTICES DURING CONSTRUC \ THE BOEING CO. 5. VEGETATIVE AND STRUCTURAL STREAMBANK / PROPOSED EXTENSION OF STABILIZATION METHODS FOR DITCHES AND SIR OAKESDALE AVENUE SW 6. OUTLET PROTECTION AT CONVEYANCE OUTFAL L TION PROPOSED WETLAND FILL 0.240 AC 1124 CY AVEL BASE COURSES PROPOSED BRIDGE END PHASE E 1 - MECHANI 5 ABT ILIZED AR ETAINING WALK CONSTRUCTION � o 000•� 61 0 MECHANIC LL ST IZED o CSTC MITIGA TLANO QP' EARTH R TAIN LL G(e,P+ o� 00\11- 0 o I WETLAND BOUNDARY (TYP.) / ��� O o THE EING'J�0. Spt O MECHANICALLY STABILIZED i 0 EARTH RETAINING WALL Vertical Datum: NCVD 1929 � � - - / — ram, SCALE FEET /�� WETLAND BOUND YP.) 1 / I 97 4 01329 0 50 100 r f / ' BENartoYa I Proposed Fill IN:Wetlands adjacent to Springbrook Creek PLANS AT:City of Renton COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET: 7 of 15 DATE:7/11/97 WETLAND F BOUNDARY 45± (Emergent Scrub shrub, ROADWAY MECHANICALLY STABILIZED EARTH RETAINING WALL (TYP.) 18 18 16 ...... 16 1 14 AROUND,._ 4 --- 12 12 10 10 -60 -40 -20 0 20 40 60 80 SECTION A-A EXISTING CONSTRUCTED CSTC 36't WETLAND BOUNDARY ROADWAY MECHANICALLY STABILIZED EARTH RETAINING WALL 26 26 24 E 24 2 22 2 20 20 1 18 8 16 16 -T EXIS-TING-- - 14 C/ EL-TX�POND 14 ]ES - 12 -TIN 12 10 10 8 8 6 6 -60 -40 -20 0 20 40 60 80 SECTION 13-13 PROPOSED BRIDGE Wetiond between Ordinary Hi Water and (Min. Clearance - 2) El. 10.0 (Forbs, Shrubs, and Trees) 28 28 26 i i - i . 26 24" 1 ii it 22 20 20 18; of; 18 16; 16 14; 14 12i 12 10, 10 8 QSE IOIF 6 Y.'RA-nF—' R.E�J- I i 1 6 4 4 2 ail to 2 0 0 - -2 2 0 20 40 60 80 100 120 140 IOU Limits of *Note: Proposed grade at bridge crossing occomodotes necessary changes \Wetiond to support City of Renton East Side Green River Watershed Project. 4 SCALE FEET SECTION C-C Note. 2.1 Vertical Exaggeration DETAIL Vertical Datum: NGVD 1929 97-4-01329 Proposed Fill ' IN:Wetlands adjacent to Springbrook Creek CROSS SECTIONS AT:City of Renton COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET. 8 of 15 DATE:7/11/97 WEIR I LOCATION' ELEV 18 TOP OF WEIRA7� �IIIIIIIIIIIIi 'DITCH'FLOW' + + + ,�1 ELEV 17.5 is i '„+.................. ��+b N + + + WEIR LOCATION • ELEV 19 ;;;;; ....................................... . TOP OF WEIR �(S i + , �,,,,,;; ;;;5 + +, DITCH FLOW % + + + + �r + 16 + + , N' I ' 1 + + + + + LINE ELEV 17.5 SSI r + + +s G ; + + + ' ''„ ;i �. . . . NORTH LEGEND 100 SCALE: 1"=100' 18 PROPOSED CONTOUR 22 EXISTING CONTOUR ' ----••----•— —EXISTING WETLAND EDGE EXISTING WETLAND "G" --------------LIMIT OF CONSTRUCTION \\\ / \\\\ SHRUB COMMUNITY DE�SCRUB— % PROPOSED FORESTED SCRUB—SHRUB SHRUB COMMUNITY WETLAND COMMUNITY (PFO/PSS) PROPOSED UPLAND BUFFER +`+ + + + + + PROPOSED EMERGENT WETLAND COMMUNITY (PEM) DATUM: NAVD 1988 97-4-01329 Proposed Fill IN:Wetlands adjacent to Springbrook Creek SOUTH MITIGATION PLAN AT:City of Renton COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET: 9 of 15 DATE:7/11/97 0 0 0 0 0 0 0 Q--q 9- 0 CP 65 0 0 0 0 0 0 0 0 0 0 0 0 . 0 0 0 0 0 0 LJ DALE AVE. W. % Z %......... .... ZIzz" ZZZZZZ,', IT 111-1z" zz z zz"zzz ,zzzzzzz, ..... %....%.......... "ZIZ I 1111z, 1% "1 % ZZ-1 1Y, 1Z11Z 11Z11Z111ZZZZ11�z z "r, Z zz Z%111 —1111,11"ZI Z .... '177ZI-1—1 '17� I J I . . . + z z z zLEGEND . .. ........ z 1z : Z ZZI"l + 1111 111z1,z". 1z ..... + IZ,Z%zZIz-,Z1 1,,IZ1z1z,Iz1z%1zz%z%zzzz11-l.zzz % %,% . Z PROPOSED CONTOUR EXISTING CONTOUR . 1 .%ZZZ, ZZ, EXISTING WETLAND BOUNDARY ................... ......... FORESTED/SCRUB—SHRUB Si........... WETLAND COMMUNITY .............. (PFO/PSS).. ....... EMERGENT WETLAND COMMUNITY (PEM) o50 100 SCALE: I'-100' EXISTING WETLANDS "C" & "D" 97-4-01329 Proposed Fill ENHANCED WETLAND— NORTH MITIGATION PLAN IN:Wetlands adjacent to Springbrook Creek FORESTED/SCRUB—SHRUB AT:City of Renton \\ COMMUNITY COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET 10of15 DATE:7/11/97 EXISTING GRADE ` PROPOSED GRADE ` UPLAND PFO/PSS PFO/PSS PFO/PSS BUFFER COMMUNITY PEM COMMUNITY COMMUNITY PEM COMMUNITY COMMUNITY ELEV 20+ ELEV 17-20 ELEV 15.5-17 ELEV 17-20 ELEV 15.5-17 ELEV 17-20 SECTION A-A (REFER TO SHEET 9) scale: horizontal 1"=50' vertical 1"=25' DATUM: NAVD 1988 EXISTING GRADE PROPOSED GRADE �. V. PFO/PSS COMMUNITY PEM COMMUNITY PFO/PSS COMMUNITY ELEV 11-14 ELEV 10.5-11 ELEV 11-15 SECTION B—B (REFER TO SHEET 10) scale: horizontal 1"=50' vertical 1"=25' DATUM: NGVD 1929 97-4-01329 Proposed Fill IN:Wetlands adjacent to Springbrook Creek MITIGATION CROSS SECTIONS AT:City of Renton COUNTY: King STATE:Wa APPLICATION BY:City of Renton SHEET: 11 of 15 DATE:7/11/97 EXISTING GRADE PROPOSED GRADE (APPROX. 5,500 CY EXCAVATION) OAKESDALE AVE. t'. i PFO/PSS COMMUNITY PEM COMMUNITY PFO/PSS COMMUNITY ELEV 11-13.5 ELEV 10.5-11 ELEV 11-13.5 STORMWATER WETLAND WATER QUALITY MITIGATION SECTION C-C (REFER TO SHEET 10) scale: horizontal 1"=50' vertical 1"=25' DATUM: NGVD 1929 EXISTING GRADE (APPROX. 1,400 CY EXCAVATION) PROPOSED GRADE OAKESDALE AVE. PFO/PSS COMMUNITY EXISTING WETLAND ELEV 12.5-14 ELEV 14 STORMWATER WETLAND SECTION D-D (REFER TO SHEET 10) WATER QUALITY MITIGATION scale: horizontal 1"=50' vertical 1"=25' DATUM: NGVD 1929 97-4-01329 Proposed Fill IN:Wetlands adjacent to Springbrook Creek MITIGATION CROSS SECTIONS AT:City of Renton COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET: 12 of 15 DATE:7/11/97 ........................8.0 I top............ffq...... ............................................................... ............ .......!�§A...............Egm..................................................... lrcszmm,2�....................Planting......P_JAnllno..�...Planting......PIlIntIng..........ALZA AgIlleing...; ............. ........................................................................................ ............................................................................................ i•Acer macrophyllum....... Bic-Leaf Maple ..........x. .................................. ..................................... ..................... ................................................................ .. ......... .AInU3 rubra ....t..........................R..e.d. A....d..e.r .. ... ........ ? ..I...s..*...............1..0....O...C... ' ***'' ................... .... ........................................... ....... ................ ...... 9!�xinus latifolia Ore. n Ash x . is* 10' o.c. ..................................... ... ............................. MaIU3 fusca Western.Crabapp!e Is, 10' O.C. ..............................................?.................... .................. ...... ...... .. ... .. Populus .rchocaroa Blade ...... ..Cottonwood ....:......A..................... .......................:................................. 10' o.c. Picea x Silka Spruce .......................................................................................................... ......................................................................................... iPseudotsuga . ............... .. ...........................................x. ..........................X........... ................... . ................... ....... .... 1.0.o.c . ....... L .......... . .. .Cedar.....................x......... ........... .......................................... ..... a. 10..O.C.... We3t6MHeMI Ck x Is-.............10..9.c... ....................................... . ..................................... ................. . ................. ........... .........*,*,*.... ................... I rS rubs: ............ ..................... ....................................................................I .......... -IX................................... ...................."*'*"**"*****............................... 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Hu AORMIA..............:Whits CIO ..............................x......................... .............. ........................... .....0..... r...... . ...... .................................................................................................................................. .................................................... ............. .... .................................................................................... . ........................................................................................................................................................................................... .............................................................................. .................................................................................... .F..F..0 mq ............................. .. ........... ................ .......I................................ .. . ------------------------............................... ..................... .................................................................... PEM q.lkirqr gent w pM..................... ...................a...............„.........................._... ...........................—....................... ........................................................................................................................I................................................................ .............. ..... note: P!fnq.xQ! .............................................................. 97-4-01329 Proposed Fill IN:Wetlands adjacent to Springbrook Creek PLANT MATERIALS LIST AT:City of Renton COUNTY: King STATE:Wa APPLICATION BY:City of Renton SHEET: 13 of 15 DATE:7/11/97 A. INTRODUCTION The City of Renton proposes to build a roadway to connect the disjunct portions of Oakesdale Avenue S.W. located in Renton,Washington (Township 23 North, Range 4 East, Sections 24 and 25). The proposed roadway would be constructed from S.W. 16th Street to S.W. 31st Street. The project would be completed in two phases. Phase I would be completed from S.W. 16th Street to S.W. 27th Street. Phase II would be completed at a later date depending upon funding. At the northern end of the project a bridge would be constructed over Springbrook Creek. Stormwater retention and treatment facilities would be constructed to meet water quality regulations. B. IMPACTS OF OAKESDALE AVENUE S.W. EXTENSION The project would impact 1.32 acres of palustrine wetlands. This includes shading of 0.04 acres of emergent wetlands associated with Springbrook Creek, filling 0.24 acres of emergent constructed wetlands on the Boeing CSTC property, filling 0.03 acres of emergent wetland, and filling of 1.01 acres of scrub-shrub wetland associated with the Phase If portion of the project. The wetlands that would be affected by the project have been assessed as having a range of functional values (Repert Method). The Phase I wetlands were rated as having low to moderate functional values, while the scrub-shrub wetlands associated with Phase II are assessed as having moderate to high functional values. Wetland functions that would be lost as a result of the proposed roadway construction include flood storage, water quality improvement, and wildlife habitat. Two mitigation parcels will be used to create wetlands in accordance with the City of Renton regulations. The first parcel is located adjacent to the proposed roadway, in the southern half of the Phase I portion of the project. The second mitigation parcel is located immediately west of the southern terminus of the Phase II portion of the project. C. MITIGATION PLAN The proposed wetland mitigation plan for the Oakesdale Avenue S.W. project has been designed to achieve a net lain in wetland functions and to achieve the general goals of the City of Renton's wetland regulations. The two mitigation parcels each would contribute 2 acres of created wetland for a total of 4 acres of new wetland. The approximate size of each habitat component is listed below. Habitat Acres Emergent 0.56 Scrub-shrub/Forested 3.60 Total 4.16 The Phase I mitigation site would create wetlands that would lie between the proposed water quality drainage swales and an existing wetland. Currently the Phase 1 site is a mixture of upland grasses and Himalaya blackberry that slopes to the east and eventually into the existing reed canarygrass dominated wetland. The created wetland would include a mix of emergent and shrub- scrub habitat components. The created wetlands are designed to receive water from the proposed water quality discharge swales and the adjacent existing wetland. 97-4-01329 Proposed Fill IN:Wetlands adjacent to Springbrook Creek NARRATIVE AT:City of Renton COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET. 14 of 15 DATE:7/11/97 The Phase II mitigation site would receive water from an existing drainage ditch. Water would be routed through the existing wetland, into the mitigation site, and then back to the ditch. The Phase II mitigation site is dominated by fill material and weedy herbaceous species and is adjacent to existing scrub-shrub wetlands. To ensure adequate hydrology, a liner is included in the design of the Phase II site. The Phase II wetland area is designed to include components of emergent and scrub-shrub/forested habitat. A work plan, performance standards, monitoring plan, and contingency plan will be developed to ensure that specifications of this mitigation plan are successfully executed and that its overall goals are attained. Mitigation wetlands are expected to achieve a net gain in wetland functions within five years, and qualitatively higher functions within 7 years. E. SUMMARY The Oakesdale Avenue S.W. Extension Project would compensate for the loss of 1.32 acres of wetland by creating 4.0 acres of wetland on two parcels of 2.0 acres each. Mitigation wetlands include a diverse mix of emergent and scrub-shrub/forested habitat. The design plan accounts for the soils and hydrologic conditions of each site and the linking of adjacent wetland habitat. Floodwater storage, water quality, and wildlife habitat are some of the functions that will be served by the created wetlands. 97-4-01329 Proposed Fill IN:Wetlands adjacent to Springbrook Creek NARRATIVE AT:City of Renton COUNTY:King STATE:Wa APPLICATION BY:City of Renton SHEET: 15 of 15 DATE:7/11/97 li i PROPOSED BRIDGE Wetlond between Ordinory High Water and t El. 10.0 (Forbs, Shrubs, and Trees) l3 CPy.the" �"c- _ _... / — - 1.7. 1 24 24 — — ! 22 20 1 rd,( 1 - 20 1s -__ I ; I iT - - i18 18 } y __. 14 - - - -- 0- -� _ i 4 12 10 # 1 )61--YEAR _l i 1 , 10 J8 PRO_ EDt -- -- _STORAGE EL.=13.0 ::1. - j i g GRADE• —- — _._ _ _.. - __ __ 4 - - V _.. - .. _ 1 , ---- -- 4 2 -Troil to--b -1oc ted _ _ 'i _ _ 0 on bench._ --E (STING - I �- 1 0 -4 --_— _ GROUND l� ! �t^ &L.: )_ , I ?-4 0 20 40 60 80 100 120 140 160 'Note: Proposed grode of bridge crossing occomodotes necessory chonges to support City of Renton Est Side Green River Watershed Project. 50<_ ia, e-t'f 14(e roaj "J .r itef SECTION G-G <Oerlelg 4"fit �s'�t<c GrosSi�/ SCALE FEET Post-it®Fax Note 7671 Date$ 2//97 pgeslo. l To / From _ l Ge G�/e � bl /�"J a Note: 2:1 Verticol Exoggerotion O 15 30 Co./Depf. Co. Verticol Dolum: NCVD 1929 Phone# / 1 Phone# / Fax# s �O '�L✓� /2c Favtpf uJ'c 'T`hGfG fa,hr 4✓e1t c9 i,e Gf/W, Sr" , If"'k CZ PURPOSE:Construct Roadway '"we_ WAS �6' l'14/ e-t() IN:Wetlands on Site DATUM:NGVD 1929 CROSS SECTIONS AT:City of Renton ADJACENT PROPERTY OWNERS: COUNTY:King STATE:Wa see sheet 15 of 25 APPLICATION BY:City of Renton SHEET. 13 of 25 DATE:7/11/97 �qOc? 2003 Western Avenue WARENk 555 Market Place One INCORPORATE Seattle, WA 98121 (206) 448-4200 (FAX) 728-5t Se , TRANSMITTAL FORM To: Marc Bou16 Date: 8/8/97 Scott Woodbury Bob Mahn Pages:_ l Mark Pywell Rick Ford Fax Via: Mail ( ) Number: FAX ( x ) From: Bryce Ecklein Fed E. ( ) Contents: This renunder. Comments: The Permit Meeting tentatively scheduled for Monday, August 11 ', will be rescheduled to another time. There is possible movement at the Corps end regarding assignment of a project manager. We may be called to a meeting Monday to discuss. Will keep you posted ... Enclosures: cc: PLANNING/ BUILDING/ PUBLIC WORKS DEPARTMENT MUNICIPAL BUILDING 200 MILL AVE. SO. RENTON, WASH. 98055,1!( UTILITY SYSTEMS DIVISION - 235-2631 � -NT TRANSPORTATION SYSTEMS DIVISION - 235-2620 TO: `l PCe fc%le%. DATE: 6l9-7 JOB NO. lid L �t 1 RE: -Wl fc c_Sd P try ATTN: GENTLEMEN: WE ARE:SENDING YOU ❑ ATTACHED ❑ UNDER SEPARATE COVER VIA THE FOLLOWING ITEMS: ❑ SHOP DRAWINGS ❑ PRINTS ❑ REPRODUCIBLE PLANS ❑ SPECIFICATIONS ❑ COPY OF LETTER ❑ COPIES DATE NUMBER DESCRIPTION AND REMARKS f S THESE ARE TRANSMITTED AS CHECKED BELOW: o EOR APPROVAL o APPROVED AS SUBMITTED ❑ RESUBMIT COPIES FOR APPROVAL FOR YOUR USE ❑ APPROVED AS NOTED ❑ SUBMIT COPIES FOR DISTRIBUTION ❑ S REQUESTED ❑ RETURNED FOR CORRECTIONS ❑ RETURN CORRECTED PRINTS ❑ FOR REVIEW AND COMMENT ❑ ❑ PRINTS RETURNED AFTER LOAN TO US COPIES TO: SIGNED gzg Ljcl:!7-' TITLE IF ENCLOSURES ARE NOT AS NOTED, KINDLY NOTIFY US AT ONCE MEMO Date: July 31, 1997 A UG i 1997 H9 i /Ty To: Scott Woodbury E ngi. a TENT From: Bryce Ecklein 2— neering Dept, Re: Woodbury letter of July 24, 1997 on Oakesdale 404 Permit Scott, first I want to thank you for your timely review and response to our draft "404" graphics submittal. I also want to let you know of our approach to the Corps submittal so you will understand how your comments have been addressed. 1. Regarding the South mitigation site weir placement and water level elevations, final determination and adjustments will be made as the design proceeds. We will need to spend more time with you to make these determinations in advance of the next level of design. For Corps purposes at this point, the concept is valid. They will undoubtedly want to see further detail as the process proceeds. 2. Regarding potential impact to wetlands at the South site due to construction, this is a detail that has not been determined at this time. While your assessment may be correct, we are not at a point where we can verify this. For purposes of the permit, it is probably best not to get ahead of ourselves. 3. Regarding better identification of the Phase 2 mitigation site, we have amended Sheet 14 to show approximate locations of mitigation sites. 4. Regarding variations in wetlands shown on Sheet 14 from other submittals, some modification has been made to shapes to get closer to true sizing but because this graphic is meant to be a"locator" only, further refinement should not be necessary for Corps purposes. The title is "Project Area Wetlands" as it now shows both existing and proposed mitigation sites. 5. Regarding clarity of graphics, this was a problem with your review set. A different copy machine and use of originals allows us to reproduce all information, especially that which is screened. 6. Regarding shape and extent of mitigation wetland design, the graphics as developed are representative of the approximate area available for mitigation. While you are Kato&Warren Inc. CACorres\baememo9.doc 7/31/97 correct that one would not construct them exactly as shown, it is understood in the process that construction and transition zones would be required. These may include existing wetlands as long as restoration is accomplished. 7. Regarding the connection of the two north mitigation sites, they connect across existing grades at the pipeline. No disturbance is needed to achieve cross-flow. 8. Regarding your comments to Sheet 13 of 25 (cross-section at Springbrook), I believe our final version does pick up all your comments. I hope this helps in understanding what went into the permit application. Any further factual changes and design refinements would be incorporated in subsequent submittals and be based on review and discussion by you and other project participants. cc: Lin Wilson Kato&Warren Inc. CACones\baememo9.doc 7/31/97 MEMO Gary �� Date: July 18, 1997 To: Lin Wilson From: Bryce Ecklein 6ow.— Re: Oakesdale Avenue SW 404 Permit Status This is the first status report on progress of the Oakesdale Avenue SW "404" permit submittal. Items of particular note include: 1. JARPA form and support materials were delivered to the COE on July 11`n. The submittal will need to be supplemented to include certain wetland mitigation graphics and text that were not part of the original submittal. . 2. The Corps (Jack K.) needs to complete the wetland confirmation report before the permit application can proceed. 3. Jack Kennedy was on vacation on the 11`n but due back on the 14`n 4. Repeated attempts to reach Jack K. by both Bryce and Marc B. to determine probable timing have not been successful. 5. Marc B. did receive communication from Jack K.'s supervisor (Ann Ulrich) that Jack had commitments to finish a Port of Tacoma notice and would then work on a Port of Seattle (third runway) application before getting to the Renton application. She projected that it would be two weeks before Jack got to the confirmation letter. 6. Based on discussions at our permit meeting, we are formatting graphics the Corps will use for the public notice in hopes of quicker turnaround at their end. 7. Shapiro have accelerated their effort on remaining mitigation graphics and should be substantially complete as of 7/18/97. 8. We are meeting with Shapiro on Monday, 7/21/97, to review public notice submittal or Corps. The City will then get a review copy prior to actual Corps submittal. 9. I have received comments from Bob M., Scott W., Lin W. and Shapiro on pick-ups on our JARPA submittal. These will be included on an amended JARPA and submitted with the public notice packet. 1 RECEIVED V Kato&Warren Inc. CACorres\haememo6.doc 7/18/97 j s Trans2ortatio, sysierrs Div Post-it®Fax Note 7671 Date � , pages To CC l�£�C(�t Fro is 14 All Co./Dept Co. Phone# Phone# CITY OF RE Fax# Fax# PLANNINGBUILDING/ MEMORANDUM DATE: July 24, 1997 TO: Lin Wilson FROM: Scott Woodbury :;uP SUBJECT: Corps 404 Public Notice Graphics Following are my comments on the draft of the Section 404 public notice graphics transmitted from Bryce Ecklein on July 23, 1997. South phase 2 mitigation site As I noted in my previous memo of July 15, we don't want to back water up on the Santa Fe property to the south of the mitigation unless we have the owner's permission to do so. Therefore, the northern weir shown on sheet 16 of 25 must be deleted. The water level in the ditch was 16.8 feet in late June near where the north weir is shown (NAVD datum). This is 1.2 feet below the weir elevation of 18 feet shown on the drawing. Also, to avoid backing water onto the Sante Fe property, the ditch diverting through the mitigation site must be at or below the elevation of the existing ditch and connect to the bottom of the emergent wetland areas (see notes on attached sheet 16 of 25). Where the proposed ditch returns to the existing ditch, the bottom of the existing ditch is at about 16 feet. The current design elevation for the flow line of the proposed ditch is too high at 17.5 feet. There will be temporary wetland impact to a small area of existing wetland on the south mitigation site to provide access where the proposed mitigation will be constructed as I identified in my previous comment memo of July 15. My comment was not addressed. Reviewers will not be able to understand where the phase 2 mitigation is located. More detail is needed to clearly define where the mitigation is located. The wetlands that are shown on sheet 14 of 25 differ from those shown in the wetlands report or in the City's inventory. This was a comment in my previous July 15 memo that was not addressed. The figure should be titled "Existing Project Area Wetlands." The wetland impact areas, proposed roadway features, and cross section cuts are difficult to see on the figures. More clarity is needed. The wetland mitigation will not be able to following the existing wetland boundary exactly as the conceptual mitigation plans show for sheets 16 through 18. There will need to be more work in the existing wetlands than shown which should be identified as an enhancement. Also, from a construction perspective, following the sharp angles of the existing wetland is not practicable or cost effective. The connection between the two north mitigation areas is still unclear as they are not shown to connect across the match lines. My July 15 comments to the figure on sheet 13 of 25 were only partially addressed. Why? Lin Wilson Corps Section 404 Public Notice for Oakesdale Extension Page 2 Dick Warren has verbally assured me that the roadway pipe conveyance systems will not be submerged with the dead storage elevations shown on sheets 11 and 12 of 25. Other comments are as noted in the attached copy of selected pages of the draft public notice graphics. I am still expecting to receive confirmation that my other comments on the JARPA were addressed and that a revised JARPA was submitted to the Corps. If they were not addressed,then I wish to be given an explanation as to why they were not addressed. If you have any questions,please contact me at X-5547. U:OAKE S DALE:97-012:S W cc: Bryce Ecklein Ron Straka R OCATION LEY 18 (�`''' • T 1 QF WEIR z: 711 gITCH FLOW LINE Ys; .................. 5++ + N WEIR + LOCATION ELEV 19 " TOP•OF WEIR + DITCH FLOP! + + + + LINE . E;LEV 17.5• J + + + YV + + + i i y + + + + + + + + + + + + + + i ♦ + i si • 0A or w /(m • NOM 50 100 LEGEND SCALE 1'-100• 18 PROPOSED CONTOUR —22 — EXISTING CONTOUR EXISTING WETLAND EDGE -------- LIMIT OF CONSTRUCTION EXISTING WETLAND FORESTED/SCRUB—SHRUB ENHANCED WETLAND— WETLAND COMMUNITY (PFO/PSS) FORESTED/SCRUB—SHRUB COMMUNITY + + + + + EMERGENT WETLAND COMMUNITY (PE M) UPLAND BUFFER PURPOSE Construct Roadway IN: Wetlands on Site DATUM: NAVD 1988 AT: City of Renton ADJACENT PROPERTY OWNERS: See Attached COUNTY: King STATE: WA APPUCATION BY: City of Renton SHEET 16 OF 25 DATE: 7/11/97 EXISTING GRADE PROPOSED GRADE OAKESDALE AVE. i PFO/PSS COMMUNITY PEM COMMUNITY PFO/PSS COMMUNITY ELEV 11-13.5 ELEV 10.5-11 ELEV 11-13.5 STORMWATER WETLAND WATER QUALITY MITIGATION SECTION C-C scale: horizontal 1"=50' vertical 1"=25' EXISTING GRADE PROPOSED GRADE OAKESDALE AVE. i T PFO/PSS COMMUNITY EXISTING WETLAND STORMWATER WETLAND ELEV 12.5-14 SECTION D-D WATER QUALITY MITIGATION �` S?� s , VW5 scale: horizontal 1"=50' 15- vertical 1"=25' PURPOSE: Construct Roadway IN: Wetlands on Site DATUM: NGVD 1929 AT: City of Renton ADJACENT PROPERTY OWNERS: See Attached COUNTY: King STATE: WA APPLICATION BY: City of Renton SHEET 20 OF 25 DATE: 7/11/97 A. INTRODUCTION The City of Renton proposes to build a roadway to connect the disjunct portions of Oakesdale Avenue S.W. located in Renton, Washington (Township 23 North, Range 4 East, Sections 24 and 25). The proposed roadway would be constructed from S.W. 16th Street to S.W. 31st Street. The project would be completed in two phases. Phase I would be completed from S.W. 16th Street to S.W.,/?��t. Phase II would be completed at a later date depending upon funding. t� At the nort end of the,.project a bridge would be constructed over Springbrook Creek. r Stormwa r i atment facilities would be constructed to meet water quality regulatio ,_________7 B. IMPACTS OF OAKESDALE AVENUE S.W. EXTENSION f �° project would fill 1.32 acres of alustrine wetlands. This includes shading of O.O acres of The prod o p b emergent wetlands associated with Springbrook Creek, filling 0.24 acres of emergent constructed wetlands on the Boeing CSTC property, filling 0.03 acres of emergent wetland, and filling of 1.01 acres of scrub-shrub wetland associated with the Phase H portion of the project. The wetlands that would be affected by the project have been assessed as having a range of functional values (Repert Method). The Phase I wetlands were rated as having low to moderate functional values, while the scrub-shrub wetlands associated with Phase II are assessed as having moderate to high functional values. Wetland functions that would be lost as a result of the proposed roadway construction Gt include flood storage, water quality improvement, and wildlife habitat. Two mitigation parcels will be used to create wetlands in accordance with the City of Renton regulations. The first parcel is located adjacent to the propose roa way, in t e sout ern alf of .142 t ePhase I portion of the project. The second mitigation parcel is located immediately west of the southern terminus of the Phase II portion of the project. C. MITIGATION PLAN The proposed wetland mitigation plan for the Oakesdale Avenue S.W. project has been designed o achieve a net gain in wetland functions and to achieve the general coals of the City of Renton' wetland regulations. The two mitigation parcels each would contribute 2 acres of createed wetland for a total of�4 cres of new wetland. The approximate size of each habitat component is listed below. �, < £ t" /`` J � Habitat pl)10 Acres cj� � Emergent 0.56 �/� Scrub-shrub/Forested 3.60. Total The Phase I mitigation site would create wetlands that would lie between the proposed water quality drainage swales and an existing wetland. Currently the Phase I site is a mixture of upland grasses and Himalaya blackberry that slopes to the east and eventually into the existing reed canarygrass dominated wetland. The created wetland would include a mix of emergent and shrub- scrub habitat components. The created wetlands are designed to receive water from the proposed water quality discharge swales and the adjacent existing wetland. PURPOSE: Construct Roadway IN: Wetlands an Site DATUM: AT: City of Renton ADJACENT PROPERTY OWNERS: See Attached COUNTY: King STATE: WA APPLICATION BY: City of Renton SHEET 24 OF 25 DATE: 7/11/97 The Phase H mitigation site would receive water from an existing drainage ditch. Water would be routed through the existing wetland, into the mitigation site, and then back to the ditch. The Phase H mitigation site is dominated by fill material and weedy herbaceous species and is adjacent to existing scrub-shrub wetlands. To ensure adequate hydrology, a liner is included in the design of the Phase H site. The Phase II wetland area is designed to include components of.emergent and scrub-shrub/forested habitat. A work plan, performance standards, monitoring plan, and contingency plan will be developed to ensure that specifications of this mitigation plan are successfully executed and that its overall goals are attained. Mitigation wetlands are expected to achieve a net gain in wetland functions within five years, and qualitatively higher functions within 7 years. E. SUMMARY The Oakesdale Ave ue S.W. Extension Project would compensate for the loss of 1.32 acres of wetland by creatin acres of wetland on two parcels of 2.0 acres each. Mitigation wetlands include a diverse mix of emergent and scrub-shrub/forested habitat. The design plan accounts for the soils and hydrologic conditions of each site and the linking of adjacent wetland habitat. Floodwater storage, water quality, and wildlife habitat are some of the functions will be served by the created wetlands. The mitigation plan would exceed the requirements of the U.S. Arm Corps of Engineers and the more stnngent mitigation requirements of the City of Renton. wG4 14 7-16 PURPOSE. Construct Roadway IN: Wetlands on Site DATUM: AT: City of Renton ADJACENT PROPERTY OWNERS: See Attached COUNTY: King STATE: WA APPUCA71ON BY: City of Renton SHEET 25 OF 25 DATE: 7/11/97 KATo& 2003 Western Avenue WARRENC 555 Market Place One Tel: 206/448-4200 INCORPORATEDSeattle, Washington 98121 Fax:20&728-5608 TRANSMITTAL FORM To: 1.i n l).)ll S Date: Z 3 -°,7 Of: c No. of pages (including cover sheet): Via: Mail ❑ Fax ❑ Fax Number: Courier L� From: ✓10001v1 FedE.r ❑ Contents: 0 f-P-J 0�, � Q,"5 e,6i" 404 RAt; ,60'ic,Q, ai6u" ``I �l1WV' 'Ir, � � �V�lA�1A11T►�►M(� �l-nM4 �n�laM �Y��'� �U�`n� 7 Comments: A 04- ' t 1 r �IZ M q.ECEI 9-r-)�� f � j Transportatton Systems Div. t Enclosures: cc: Kato&Warren-I1/13/96 CAfonns\rransmif\transmt I.doc DRAFT July 23, 1997 Jack Kennedy US Army Corps of Engineers, Seattle District Regulatory Branch P.O. Box 3755 Seattle, WA 98124-2255 Re: City of Renton— Oakesdale Avenue SW Extension Section 404 Permit Application Dear Mr. Kennedy: Since submitting our "Section 404" Permit Application on July I Vh, the City has taken the opportunity to prepare the necessary graphics in support of the Corps' Public Notice of Application for Permit. We have done so to make the process less burdensome at your end and in the hopes of staying on our targeted construction schedule (early Spring 1998). We are also enclosing an amended DARPA application to identify Mr. Bryce Ecklein of Kato & Warren as our authorized agent and to include some update project information. Please feel free to contact Mr. Ecklein from this point on if you have any questions on our submittal. Sincerely, Gregg Zimmerman, P.E. cc: Rick Ford (Boeing) Bryce Ecklein (Kato & Warren) Marc Boule (Shapiro) 6 Mark Pywell RECEIVED, Lin Wilson i i e12ClOSLIYe.S y Trans- tioR Systems Civ �t may` EVERETT SEA'. BREMERTON '�RENTON SW SUn�� SIT E TACOMA 7 / *OLYMPIA kes in Proyject 5 i SITE �.A SW Gc } I WASHINGTON N/, 05 :c Renton r Bfv m Co Eni, 167 `\ Pro,fect l Strands Bkvd SW 27th St c m c > Q 3t SW 34th t Z Q W LO a " Ln S 4 3 180th S A3W St �- co Kent J PURPOSE:Construct Roadway IN:Wetlands on Site DATUM: VICINITY MAP AT.City of Renton ADJACENT PROPERTY OWNERS: COUNTY:King STATE:Wa see sheet 15 of 25 APPLICATION BY:City of Renton SHEET: 1 of 25 DATE:7111/97 Ole o, •�';�� Sw G�oaywoy SW 16th St Y i z5 ;' Boeing * RENTON CSTC -`:; Flo, :. 1 Cr d } 81 � 1 1 6 _: Proposed ' ,J E it Longacres : office Park s � 1 °I SW 27rh Sr TUKWIIA Vim . :o > i•a iii 3 3 SW 34th St a d 0 6 0 SW 41 st St t 8 S SW 43rd St KENT 0 1/4 1/2 1 legend Miles �' Project Area PURPOSE:Construct Roadway IN:Wetlands on Site DATUM: PROJECTAREA AT:City of Renton ADJACENT PROPERTY OWNERS: COUNTY:King STATE:Wa see sheet 15 of 25 APPLICATION BY:City of Renton SHEET 2 of 25 DATE:7/11/97 I I I II I I I it l\` ,- SHEET 16 _ j .'� �• .J( -1 �J l SOUTH MITIGATION PLAN U PHASE ONST�MCTIOPI 'PHA8E 1 C T UCTIO __ ' N II : : : . . . : : : : : : : : : : : : : : : : : : : : : ( �— — ❑ err (b_ LU . . . . . . . t, LAJ •.•. / Lv rl �... z : . . . . ._1 HEMS pi, I SHE NORTH MI TI GA T N T_.. SHEET 5 SHEET 6 PLAN SHEET 8 SCA E FEET — — -1 — 0 150 300 I PURPOSE:Construct Roadway IN:Wetlands on Site DATUM: KEY MAPS AT:City of Renton ADJACENT PROPERTY OWNERS: COUNTY:King STATE:Wa see sheet 15 of 25 APPLICATION BY:City of Renton SHEET. 3 of 25 DATE:7/11/97 1 t J j AS 11=C-mNS 1 • IV I psi 11 I y i- 1 111 ! o 0 i Ld ZU - -- v ' �$HEET 8 I ��; ►� - may. � - � 0 - N-MI-TJGAi1 �- �/ d SCALE FEET KEYPLAN �� ;......� _............ I •-•-•----•---•••--f 0 150 300 PURPOSE:Construct Roadway IN:Wetlands on Site DATUM: KEY MAPS AT.City of Renton ADJACENT PROPERTY OWNERS: COUNTY:King STATE:Wa see sheet 15 of 25 APPLICATION BY:City of Renton SHEET: 4 of 25 DATE:7111/97 BEGIN PHASE 2 CITY OF RENTON \ I - . . CONSTRUCTION �_ / � \ _J I - AaEGNM1CAl,LY STABILIZED EARTH-RET IN G-lyACf�- - - - -- •00 1+0 _- -------- --- 3+00 4 -- - _ - -A DALE VE. S. ' _ PROPOSED-WE1LANb o- r MECHANICALLY STABILIZED FILL.(1.01 AC) �j \, I EARM RETAINING WALL (Select granular moil for roadbed) \ . 'PROJE�j-t WE�TI AND f' �•. 1 _ (Eme(ent•Scrub shrub) i I WETLAND BOUNDARY (TIP.) \ CITY OF RENTON I I I I I I I I I I CITY OF RENTON EROSION CONTROL MEASURES I CITY OF RENTON I I I 1. SILT FENCE LOCATED OUTSIDE CUT/FILL SLOPES AND ALONG PERIMETER OF SENSITIVE AREAS. 2. TEMOORARY COVER OF ALL EXPOSED SLOPES DURI G CONSTRUTION. Vertical Doturb: NGVD 1929 J. PER ANENT SEEDING OF ALL SLOPED AREAS UPON COMRLETION OF WORK. SCALE FEET I 4. DUS CONTROL PRACTICES DURING CONSTRUCTION. 5. VEG TATIVE AND STRUCTURAL STREAMBANK STA ILIZATION METHODS FOR DITCHES AND STREAM. 0 50 1 100 I 6. OU ET PROTECTION AT CONVEYANCE OUTFALL LOCATIONS. PURPOSE:Construct Roadway IN:Wetlands on Site DATUM:NGVD 1929 PLANS AT.City of Renton ADJACENT PROPERTY OWNERS: COUNTY.King STATE:Wa see sheet 15 of 25 APPLICATION BY:City of Renton SHEET. 5 of 25 DATE:7/11/97 - - - - - - - - - - - - - - - - - - - A —� -THE-BOEING-CO. - END PHA CONST UC 6N I MECHdTIICAtti' SIL161�17ED __ �B !N' H L ST CT10 TftRFrTAIIZIN WAL= --------------- ---- -- --- ---- -W- �z O SEO TLA . . FIL (1:01 AC) A p (Select gronulor mall for roadbed o o A MECHANICALLY STABILIZED ° o . . . . . . EARTH RETAINING WALL . . 1` I 111 . . . . . . . . . . . . . . . . . . . ► °� .PROJECt eTLAND t .o . . .. W • (Emergent Scrub shrub) . I - o . . . \. . . . . . . . ll / . . . . . . . . . . . . -°--\. . . . . �. . . . . . . . . . . . . . . . . . . - . . u. f WETLAND BOUNDARY (TYP.) it W CITY OF RENTON I I I I EROSION CONTROL MEASURES I 1. SILT FENCE LOCATED OUTSIDE CUT/FILL SLOPES AND ALONG PERIMETER OF SENSITIVE AREAS. 2. TEMPORARY COVER OF ALL EXPOSED SLOPES DURING CONSTRUTION. J. PERMANENT SEEDING OF ALL SLOPED AREAS UPON Vertical Datum: NGVD 1929 COMPLETION OF WORK. SCALE FEET 4. DUST CONTROL PRACTICES DURING CONSTRUCTION. I 5. VEGETATIVE AND STRUCTURAL STREAMBANK I STABILIZATION METHODS FOR DITCHES AND STREAM. I I 6. OUTLET PROTECTION AT CONVEYANCE OUTFALL LOCATIONS. 0 50 100 i PURPOSE:Construct Roadway IN:Wetlands on Site DATUM:NGVD 1929 PLANS AT:City of Renton ADJACENT PROPERTY OWNERS: COUNTY:King STATE:Wa see sheet 15 of 25 APPLICATION BY:City of Renton SHEET: 6 of 25 DATE:7/11/97 \ �a PROPOSE L n ° I III I THE-8 LNG 0. \ LL 25�1C,A D�� THE_ EING C 4 > C o W �-1 U -`� �Sslxf(�nnular mot) for r d �d/- �,T, T+00-_ 228+00�_ _29tD0 30+ 0 ^•31+0 2+00 33+00 -- PROPOSED-ST lbw _ -- ---- --Of�Ff�St-- -s --------- -- ----- -- -- ---- • - ----- CONVEYANC DISCHAR IN DA=C=E-=AVE ------ ---------- - -- ------ ------- - --e--------- ----- - - a ---------- ------------- - ------- \ T E BO ING CO. RO ECT YtETLA D (E ergent) // - -- --a--- ---/ \ WETL D B UN 4RY (TYP.) PROPOS • .QUA Y POND \7 — CITY 0 REN a, PR J11 T WETLAND C THE BOEING CO. mer ent) . _ . I � �. . . I IL_., FENCE-LO.CATED QU SIDE C 7nLt SCO AND-ALONG-PERIME R-OF-SENSITIVE-AREAS• OF-ALL--EXPOSED SLOPES--------- 1 41 - DURING�ONSTRUTIO Verticol Dotum: NGVD 11929 1 \ 3. PERIAANENT $EE�DING-OF-AIL=SCOPED�.QREAS UPO " \ \`_ ` OMPLETION OF WORK. SCALE --EEEL I I 4. DUST CONTROL PRACDCES-DURING-CO(ISTRUCDON. VEGETATIVE AND STRUCTURAL STREAMBANK— STABILIZA-DON-METHODS-F-OIZQITCHES AND STREAM. EO ,UO 5O lOOI 1 E TONS. PURPOSE:Construct Roadway IN:Wetlands on Site DATUM: NGVD 1929 PLANS AT:City of Renton ADJACENT PROPERTY OWNERS: COUNTY:King STATE:Wa see sheet 15 of 25 APPLICATION BY:City of Renton SHEET: 8 of 25 DATE:7/11/97 THE 0 I G — _- AND BOU D Y I( o -34+ _ 36+00 3 _—.------------ ---------- _— -------- - - �----------- --- � i�.— —a0}Q -- -- ---- ---- -- -- ---------- ------------- ---------- —o I I \ HE OEIN CO. � TH BO �G1 Co. ID I IR'N S14T FENCE OCA 0 TS1DE CUT/FILL SLOPES ANP ALONG ERIMETE PF SENSITIVE AREAS. —t!qq__� 2. TEMPORARY COVER O ALL EXPOSED SLOPES J o DURING CON TRU-ION.I I N 192 / —J`, _� / PEK1�A ENT4SEEDNG ALL SLOPED AREAS UPON —VfrJi of Do` G / ! _�_ "` — _ CO(NPLE ON OF ORKI SS A�/ F j / / / ((�i � o p� — ��DUST C 7 OL P AC 1 S DURING CONSTRUCTION. 5. VEGETA j AND STRI�I ,RAL STREAMBANK STABILI A f0Q FOR DITCHES AND STREAM. 50 �1 p / / / 1 I I 6.P OUTL POTE� t7f l A I CONVEYANCE OUTFALL LOCATIONS. PURPOSE:'Construct Roadway ))Y IN:Wetlands on Site DATUM:NGVD 1929 PLANS AT.City of Renton ADJACENT PROPERTY OWNERS: COUNTY:King STATE:Wa see sheet 15 of 25 APPLICATION BY:City of Renton SHEET. 9 of 25 DATE:7/11/97 I� l , I I EROSION CONTROL MEASURE ARY S ILA - 4D ( ) 1. SILT FENCE LOCATED OUTSIDE CUT/FI 1. LOPES \\ 11 AND ALONG PERIMETER OF SENSITIVE AR AS. 2,..,T )JeORARY COVER OF ALL EXPOSED J SL/OPES DURING,.CONSTRUTION.,..... l HA NI LLY TABI(JZED 3. PERMANENT'SEEDING OF'ALL SLOPED AREAS U % 6 ` EA TH NI WALL OMpCET1pN-pF-ySKJR t 4. DUST CONTROL PRACTICES DURING CONSTRUC \ � THE BOEING Co. 5. VEGETATIVE AND STRUCTURAL STREAMBANK �I STABILIZATION METHODS FOR DITCHES AND SIR . 6. OUTLET PROTECTION AT CONVEYANCE OUTFAL L v PROPOSS D WETLAND FILL D. 0 AC r...- -------- -- - - -- -- - -- -- ----------—------------- - -- - - - -____-- _ -- — —Se+xt= on hr�notl ed-- - 1 . PROPOSED BRIDGE _ • - ¢ b ! ' END PHASE I MJANI INING WALL-BILIZED CONSTRUCTION j e y OAKESD I CSTIZ A I CA 1 AND �/ Q EA�7 GN) Atp l 'G(e / i/ ` -- DALE A E. S. W. ° II 1 WETLAND BOUNDARY (TYP.) I THE EING11O. ,� ,/�Sp(\. / ;i � _ MECHANICALLY ST BILIZE P I EARTH-REI`AINJN.NAL� 1 Vertical Datum: NGVD 1929 SCALE FEET r _ 0 50 100 ;. BENAROYA IR n WETLAND BOUNQ (TYP�� PURPOSE:Construct Roadway IN:Wetlands on Site DATUM:NGVD 1929 PLANS AT:City of Renton ADJACENT PROPERTY OWNERS: COUNTY.King STATE:Wa see sheet 15 of 25 APPLICATION BY:City of Renton SHEET: 10 of 25 DATE:7/11/97 WETLAND F BOUNDARY 45't (Emergent Scrub shrub)! ROADWAY MSE WALL TYP. 18 — .__ - — _ --_ 1 - -- 8 16 ; -- — I =_ I __ -EIS iIN 16 14 i G OUND 14 - 12 \ 7 _ F 12 10 — ------ , _,_— _{_ -_ I 10 -60 -40 -20 0 20 40 60 80 SECTION A-A 16't WETLAND D BOUNDARY ROADWAY DEAD STORAGE EXISTING ,(Emergent Scrub shrub) r EL. 13.6 GROUND I 16 16 1-- - - .. , -- - 14 --- — ---- — — 14 - -- - 12 - ----- -._ - 12 -40 -20 0 20 40 60 80 100 120 140 SECTION B-B 125't WETLAND D BOUNDARY EXISTING ROADWAY CONSTRUCTED (Emergent Scrub shrub) GROUND WETLAND 18 18 16 --- — _. 0 - -I - 16 14 -- --- - -- 14 12 -- -- - -- 0:L1 --- --- 12 -40 -20 0 20 40 60 80 100 SCALE FEET DEAD STORAGE SECTION C-C EL. 13.6 Note: 2:1 Verficol Exoggerotion Verlicol Dofum: NGVD 1929 0 15 30 PURPOSE:Construct Roadway IN:Wetlands on Site DATUM: NGVD 1929 CROSS SECTIONS AT.City of Renton ADJACENT PROPERTY OWNERS: COUNTY:King STATE:Wa see sheet 15 of 25 APPLICATION BY:City of Renton SHEET. 11 of 25 DATE:7/11/97 190't WETLAND D BOUNDARY ROADWAY EXISTING CONSTRUCTED (Emergent Scrub shrub) GROUND WETLAND 18 18 16 16 -— _--_ -- . _ T = -- 14 _----- -- — -V --- - 14 - —-k - --- 12 � - -- -- -- ---1- - 101-- -- 12 -40 -20 0 20 40 60 80 100 DEAD STORAGE SECTION D-D EL. 13.3 30 t EXISTING CONSTRUCTED WETLAND C BOUNDARY GROUND ROADWAY DEAD STORAGE TOP OF BERM WETLAND (Emergent) - - - - EL. 13.3 EL. 14.5 1 18 - - — - — —T= - —J 16 -- -- -- --I -_ 16 14 - 14 - - - - - - -- - - 122 12 -- — --- -- ! 10 —- - - _ — - --- --- — - 1 -40 -20 0 20 40 60 80 100 120 140 SECTION E-E CSTC WETLAND BOUNDARY I 36't ROADWAY 26 _ -- --- - - - 26 --- - 24 -- , 24 22 ,— -- - -- 122 20 -_ 20 18 8 --- --- _ - I -- - - 1 16 -.---- - -- - _ MSEI 16 --- - --- 14 — --------- -- ----- - --INAL`l--_-- 4 12 -EXI TING- _ 12 -GROUND=- -- ---- - _ _ --- -- --- -- 10 ------- _ _ ---�� =--- 10 SCALE FEET g -60 -40 -20 0 20 40 60 80 Note: 2:1 Vertical Exaggeration 0 15 30 SECTION F-F Vertical Datum: NGVD 1929 PURPOSE:Construct Roadway IN:Wetlands on Site DATUM: NGVD 1929 CROSS SECTIONS AT:City of Renton ADJACENT PROPERTY OWNERS: COUNTY:King STATE:Wa see sheet 15 of 25 APPLICATION BY:City of Renton SHEET: 12 of 25 DATE:7/11/97 APPROX WETLAND PROPOSED BRIDGE Springbrook Creek ronce - 2) (Forbs, Shrubs, ond Trees) 28 8 26.......... 26 24 :7:7 24 22 22 0 2 AU ------- 1 20 18 8 LL 16 16 14 14 1 12 2 1 0 =1 00_YEAR__ 10 , 3.07�� 8 8 P 6 6 AU :'@--E L-7-0 4 =(T 4 2 2 -roil -to-b -10c 0 -on4ench. 0 -2 —GROUND -2 -4 — — _4 0 20 40 60 80 100 120 140 160 *Note: Proposed grode ot bridge crossing occornodotes necessory chonges to support City of Renton Eost Side Green River Wotershed Project. SECTION G-Gi SCALE FEET Note: 2:1 vertical Exaggeration 1 Vertical Datum: NGVD 1929 0 15 30 PURPOSE:Construct Roadway IN:Wetlands on Site DATUM: NGVD 1929 CROSS SECTIONS AT.City of Renton ADJACENT PROPERTY OWNERS: COUNTY:King STATE:Wa see sheet 15 of 25 APPLICATION BY:City of Renton SHEET- 13 of 25 DATE:7/11/97 ...���ppp...'dam 44 Ya . cma tip _ .......... ` qia . A xr •� a � i>r 1 . • RENTON' jf((�LI .,.�. F �f_� ` S>ti ttttt� .t^• 3 K C F 7 4€$+ jA ati Ts +$ lei mq V . r _ Al �y F wetland etl _SW vtli St 3: si a Boein soutkwars :we "E" .y , a '. sr „'i .i�• _..� as ,i ��, �, •€F wetland'T' ►►`7�Y' ANI �. t .. wetland SW 341h sr f •.i 3 't a'_T�t 6r. 3' Q'ct•`'y+''�" � Ty,S..,. ..T." �_ .. b a ;r ''"�` .,yF k r 'i tFL� ....wair'lS' � ��l i� L• 1 _]•th iCs 'F ii E •�� ! -E Lr;.a• E' '.�.F PURPOSE: ••a• Wetlandson DATUM: AT-City of Renton PROJECT AREA WETLANDS ADJACENT •.•• COUNTY: • STATE:Wa see sheet 15 A•• • • Renton SHEET 14• of DATE: • Name Address Plione Number Tax No. `:.. sWG" (1) The Boeing Company P.O. Box 3707 MS 20-30 (425)-477-0094 242304-9022 Attn.: Rick Ford Seattle,WA 98124-2207 `' ''• U '• sw►ea � (2) Benaroya Capital 1001 4`h Avenue,#4700 (206)-343-4750 334040-5300 :'~t' Company Seattle,WA 98154 i �� O °in CST( �41k� �RENTON (3) The Boeing Company P.O.Box 3707 MS 20-30 (425)-477-0094 000580-0018 !ff t a ___ L 4-1 Attn.: Rick Ford Seattle,WA 98124-2207 000580-0016 4 252304-9062 I O3 I 000580-0001 > b � 1 b (4) City of Renton 200 Mill Avenue South (425)-235-2500 000580-0019 Renton,WA 98055 252304-9001 Offkf Pak (5) Allpak Corporation 1 100 SW 27`h Street (425)-227-0400 252304-9058 l 4 Renton,WA 98055 3j� (6) City of Renton 200 Mill Avenue South (425)-235-2500 252304-9019 TUKWIEA Renton,WA 98055 252304-9004 (7) City of Renton 200 Mill Avenue South (425)-235-2500 252304-9001 Renton,WA 98055 a (8) Atcheson,Topeka& 920 SE Quincy Street (913)-232-8100 252304-0042 Santa Fe Topeka, KA 66612 f (9) Atcheson,Topeka& 920 SE Quincy Street (913)-232-8100 125381-0310 1 l i b Santa Fe Topeka,KA 66612 Z. (10) King County 601 West Gowe Street (253)-854-7200 not applicable i f Drainage Dist.No. 1 Kent,WA 98032 Attn.: Jack Nelson, legend Attorney ' a Project Area Dexter Morton Building (206 684-5831 000580-0017 8 tId ni icohon SWAINSt (11)Seattle Public g )- O Utilities Real Estate 710 2"Avenue, 10`h Floor KENT Services Seattle,WA 98104 NW#s PURPOSE:Construct Roadway IN:Wetlands on Site DATUM: PROPERTY OWNERSHIP AT:City of Renton ADJACENT PROPERTY OWNERS: COUNTY-King STATE:Wa see sheet 15 of 25 APPLICATION BY:City of Renton SHEET: 15 of 25 DATE:7/11/97 64AP r OCATION r LEV 18 T F WEIR r QITCH FLOW LINE • , , ,r�S: WEIR j LOCATION E•L.EV 19 ' • TOP-OF WEIR' ' DITCH FLOWCN " s'+ + + i + + + + • � i i + di?r.�, ' Wow Glev A�kl NOM L o o so ioa LEGEND scmr- f 18 PROPOSED CONTOUR —22 — EXISTING CONTOUR EXISTING WETLAND EDGE EXISTING WETLAND-------- LIMIT OF CONSTRUCTION FORESTED/SCRUB—SHRUB ENHANCED WETLAND— WETLAND COMMUNITY (PFO/PSS) FORESTED/SCRUB—SHRUB COMMUNITY EMERGENT WETLAND COMMUNITY (PEM) UPLAND BUFFER } } + } PURPOSE: Construct Roadway IN: Wetlands on Site DATUM: NAVD 1988 AT: City of Renton ADJACENT PROPERTY OWNERS: See Attached COUNTY. King STATE: WA APPUCATION BY: City of Renton SHEET 16 OF 25 DATE: 7/11/97 li I I � s d s � • I. . 11 I I 4-t J�rN_ aa _ + O LAJ ++++ + +' I i QI I ++ i+ I I I I '14 _ '15 II MATCHLINE SHEET 18 NORM 0 50 100 LEGEND 12 PROPOSED CONTOUR scue 1'-1ar EXISTING CONTOUR EXISTING WETLAND BOUNDARY FORESTED/SCRUB—SHRUB EXISTING WETLAND WETLAND COMMUNITY (PFO/PSS) ENHANCED WETLAND— +++++++++ EMERGENT WETLAND COMMUNITY (PEM) ® FORESTED/SCRUB—SHRUB COMMUNITY PURPOSE: Construct Roadway IN: Wetlands on Site DATUM: NGVD 1929 AT: City of Renton ADJACENT PROPERTY OWNERS: See Attached COUNTY: King STATE: WA APPUCATION BY: City of Renton SHEET 17 OF 25 DATE: 7/11/97 MATCHLINE.SH i� I , I g O I I d d a F I 0 itII iI i — JI — — — NORM LEGEND U sa 100 12 PROPOSED CONTOUR scxE i'_ EXISTING CONTOUR ioo EXISTING WETLAND EXISTING WETLAND BOUNDARY FORESTED/SCRUB—SHRUB ENHANCED WETLAND— WETLAND COMMUNITY (PFO/PSS) FORESTED/SCRUB—SHRUB COMMUNITY PURPOSE: Construct Roadway IN: Wetlands on Site DATUM: NGVD 1929 AT: City of Renton ADJACENT PROPERTY OWNERS: See Attached COUNTY: King STATE: WA APPLICATION BY: City of Renton SHEET 18 OF 25 DATE: 7/11/97 LPREXISTING GRADE OPOSED GRADE UPLAND PFO/PSS PFO/PSS PFO/PSS BUFFER COMMUNITY PEM COMMUNITY COMMUNITY PEM COMMUNITY COMMUNITY ELEV 20+ ELEV 17-20 ELEV 15.5-17 ELEV 17-20 ELEV 15.5-17 ELEV 17-20 SECTION A-A scale: horizontal 1"=50' vertical 1"=25' EXISTING GRADE PROPOSED GRADE PFO/PSS COMMUNITY PEM COMMUNITY PFO/PSS COMMUNITY ELEV 11-14 ELEV 10.5-11 ELEV 11-15 SECTION B-B scale: horizontal 1"=50' vertical 1"=25' PURPOSE: Construct Roadway IN: Wetlands on Site DATUM: NAVD 1988(A), NGVD 1929(B) AT: City of Renton ADJACENT PROPERTY OWNERS: See Attached COUNTY: King STATE: WA APPLICATION BY: City of Renton SHEET 19 OF 25 DATE: 7/11/97 EXISTING GRADE PROPOSED GRADE OAKESDALE AVE. s PFO/PSS COMMUNITY PEM COMMUNITY PFO/PSS COMMUNITY ELEV 11-13.5 ELEV 10.5-11 ELEV 11-13.5 STORMWATER WETLAND WATER QUALITY MITIGATION SECTION C-C scale: horizontal 1"=50' vertical 1"=25' EXISTING GRADE PROPOSED GRADE OAKESDALE AVE. — ---------- i T PF PSS COMMUNITY EXISTING ND ELEV 12.5-14 .a�i � STORMWATER WETLAND SECTION D-D WATER QUALITY MITIGATION 545< �y5e, scale: horizontal 1"=50' /oH4 vertical 1"=25' y r ` PURPOSE: Construct Roadway IN: Wetlands on Site DATUM: NGVD 1929 AT: City of Renton ADJACENT PROPERTY OWNERS: See Attached COUNTY: King STATE: WA APPLICATION BY: City of Renton SHEET 20 OF 25 DATE: 7/11/97 Buffer PFO PSS PE, .......................................................................... ..... .....m..................................................... Plantfria : .................. Plantina.. Planting......Plantfria..........JLXJ..........Spacino ................................................................................................................................................................................................................... iAcer macroohVilUM ................4..........?�................................ 18" . 10'.o.c ..................................................................................... .................................................. X Is. 10' a.c. Red Alder ......... x ....................................................... ......................................................................................................... frexinuj..��!ifolia...........on? n.AsA....................... x 18* . 10' a.c. ........................................................................................................................................... ......... .......90.......... I 18* 10, o.c. .............P��...................... .................................................................... ?qp 'Bl.ck Cottonwood .......... .................... c r ............ .................................................................... ri hoca.p!�..... x Is, 10, o.c. ................................................................. 18* 10. 0. Picea sit�n-s-is*— *;Sift Spruce .......................................................................... ........................................................................ . .... ...9.....I ...................................... 10: o.c. ................................x ............ ........................... ................................. .......................................... .....................x ..........A........................................................ ......... 'Th --------- ..................... .......... ........................x........................................................................................I.S.,................I.V ......................................................................................................................................................... ......................................!...................... ....................................................................................................................................................................................................... x W 3' o.c. .................. ........................ ..................... ............................................................................................ ................. j;qMq;k.jpri so JJ19499q�999W909.................................. ......... ...................A......................................... ..... 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Rybys..p oflq!yj.............. m.......mr. .......... x x ..............Z.;�c!...... ...............§A1mqNWry............................... ................................................. T a.c. x x LS .............. ........................................................................x.............................................!A.......... ... Safixsitcriensis................. ...............................................................................A........................ ........... 3' a.c. ...........!�"-Atqlpngrry............................. .......................................................................................................................-...... ...... ........ 3' o.c. ...................................................................................... .............. ............................................................................................... ..................................................................:.................................................................................................................... x ............. ............ ......................................................................................................... .......pla..................* X ISawoeak Seggik................................................................................................. ................4'.9.9!............... O.C. .qara)�.VIM4...................... X* i - ......................p.q!........... Eleacharis..pAku!�q!...........9qT ............................................................................................. Sola age Aus O.C. ............ n.....s.... n............................................................................................. ................�*..m..........w.... ... ox. i44p5v�.Ar*a ius ..qa9Vr-!eW.RUSP.................................................................................... ......X................ ...........18 x 4. qq�.........�.18. O.C. ...................................................................... ....................I......... .............. .............. qk...........j§' -3.C. ................... ........................................................................................... .................4' ............ X O.C. s 11-frulted..Sulrusn .................... Is. TA ...........Pat................. I................................................................................................................................................................................................................ WetlaS d...Nli'�:.................................................................................................................................................................... ...............n.d......*.0 x 1.6vq3K'§..A!o.................... x x x ..........................20'— L6!qpqSqLq.qe.ji��jatus Water F.a?5.a!1........................................................................................................... ��FA!ktqca�.Nm..................... ............................................... ...........A.................... ....................?�.........................................1Q.......... 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LEM .!NkA..................... ..................... ....................... ............................................................................................... i 40 ...................... ....................................... .............M!jual.fteg�a..........................?�.......... ................................................. lTrl I to white Clover.................................A .................. ....................;.........................................................19........ r .................. ............................................................I................................. ............................................................................................ ...... .............................................. ....................................................................................I................................................................. ....... ........... ............................................................................................................................. ............... .......................7............ ................................................................................................................;............................................................................................ iPFO-palustrine forested we and .................................. ................................................................ ....................................................................................... ........................................... .................. .......... ................................................ EMgen�:wq!................................................................................................................................................................. ri .................................... .................................................................................................. yill b*..located In...Int.of.m.8 PURPOSE: Construct Roadway IN: Wetlands on Site DATUM: AT: City of Renton ADJACENT PROPERTY OWNERS: See Attached COUNTY: King STATE: WA APPUCATION BY: City of Renton SHEET 21 OF 25 DATE: 7/11/97 s DETAIL NOTES: • TREES AND SHRUBS SHALL BE FERTILIZED. PLANT PIT DIMENSIONS ARE TYPICAL AND REPRESENT ALL TREES AND SHRUBS. PLACE ALL ROOTBALLS SO TOPS ARE LEVEL WITH FINISH GRADE. ' • '. PRUNE ALL DEAD AND BROKEN LIMBS AND ROOTS. FINISH GRADE 2' MULCH (UPLAND ONLY) TYPICAL 4' TEMPORARY NATIVE SOIL ' s WATERING BASIN N SCARIFY SOIL (ALL PLANTINGS) INTERFACE SCARIFY O ! ROOTBALL AND a SPREAD ROOTS ! o$ COMPACT SOIL UNDER Cr ROOTBALL (TYPICAL) 2x DIA. ROOTMASS OF ROOTBAII SPREAD ROOTS CONTAINER GROWN CONTAINER GROWN CONTAINER GROWN CONIFEROUS TREE DECIDUOUS TREE SHRUB TREE AND SHRUB PLANTING DETAIL NOT TO SCALE PURPOSE: Construct Roadway IN: Wetlands on Site DATUM: NGVD 1929 AT: City of Renton ADJACENT PROPERTY OWNERS: See Attached COUNTY: King STATE: WA APPLICATION BY: City of Renton SHEET 22 OF 25 DATE: 7/11/97 GROWING POINT OR FOLIAGE IF FOLIAGE OR GROWING TIP PLUG IS NOT PRESENT, PLACE ONE ROOT NODE FLUSH WITH NURSERY GRADE OF PLANT FINISH GRADE TO BE LEVEL WITH FINISH FINISH GRADE GRADE 6' APPROX. REPLACED SALVAGED TOPSOIL AND SOIL AMENDMENT. INCORPORATE INTO SUBGRADE EMERGENT PLANTING DETAIL NOT TO SCALE PURPOSE: Construct Roadway IN: Wetlands on Site DATUM: NGVD 1929 AT: City of Renton ADJACENT PROPERTY OWNERS: See Attached COUNTY: King STATE: WA APPLICATION BY: City of Renton SHEET 23 OF 25 DATE: 7/11/97 A. INTRODUCTION The City of Renton proposes to build a roadway to connect the disjunct portions of Oakesdale Avenue S.W. located in Renton, Washington (Township 23 North, Range 4 East, Sections 24 and 25). The proposed roadway would be constructed from S.W. 16th Street to S.W. 31st Street. The project would be completed in two phases. Phase I would be completed from S.W. 16th Street to S.W. 2 eet. Phase H would be completed at a later date depending upon funding. 1 At the nort4effi end of ih rcject a bridge would be constructed over Springbrook Creek. Stormwa r atment facilities would be constructed to meet water quality regulatio ___-- P�'"al �r� B. IMPACTS OF OAKESDALE AVENUE S.W. EXTENSION The project would fill 1.32 acres of palustrine wetlands. This includes shading of .0 acres of emergent wetlands associated with Springbrook Creek, filling 0.24 acres of emergent constructed wetlands on the Boeing CSTC property, filling 0.03 acres of emergent wetland, and filling of 1.01 acres of scrub-shrub wetland associated with the Phase H portion of the project. The wetlands that would be affected by the project have been assessed as having a range of functional values (Repert Method). The Phase I wetlands were rated as having low to moderate functional values, while the scrub-shrub wetlands associated with Phase H are assessed as having moderate to high functional values. Wetland functions that would be lost as a result of the proposed roadway construction G�„t include flood storage, water quality improvement, and wildlife habitat. �In� (V � Two mitigation parcels will be used to create wetlands in accordance with the City of Renton ,mow regulations. The first parcel is located adjacent to the propose road way, in t e sout ern alf of t e Phase I portion of the project. The second mitigation parcel is located immediately west of the southern terminus of the Phase II portion of the project. C. MITIGATION PLAN The proposed wetland mitigation plan for the Oakesdale Avenue S.W. project has been designed o achieve a net gain in wetland functions and to achieve the general goals of the Cit of Renton' wetland regul tions. The two mitigation parcels each would contribute 2 acres of created wetland for a total o 4 cres of new wetland. The approximate size of each habitat component is listed below. Habitat I/u►^ Acres Emergent 0.56 l` Scrub-shrub/Forested ` 3.60., Total .16 The Phase I mitigation site would create wetlands that would lie between the proposed water land. Currently the Phase I site is a mixture of upland quality drainage swales and an existing wet grasses and Himalaya blackberry that slopes to the east and eventually into the existing reed canarygrass dominated wetland. The created wetland would include a mix of emergent and shrub- scrub habitat components. The created wetlands are designed to receive water from the proposed water quality discharge swales and the adjacent existing wetland. PURPOSE: Construct Roadway IN: Wetlands on Site DATUM: AT: City of Renton ADJACENT PROPERTY OWNERS: See Attached COUNTY: King STATE: WA APPLICATION BY: City of Renton SHEET 24 OF 25 DATE: 7/11/97 The Phase II mitigation site would receive water from an existing drainage ditch. Water would be routed through the existing wetland, into the mitigation site, and then back to the ditch. The Phase II mitigation site is dominated by fill material and weedy herbaceous species and is adjacent to existing scrub-shrub wetlands. To ensure adequate hydrology, a liner is included in the design of the Phase II site. The Phase II wetland area is designed to include components of.emergent and scrub-shrub/forested habitat. A work plan, performance standards, monitoring plan, and contingency plan will be developed to ensure that specifications of this mitigation plan are successfully executed and that its overall goals are attained. Mitigation wetlands are expected to achieve a net gain in wetland functions within five years, and qualitatively higher functions within 7 years. E. SUMMARY J�I The Oakesdale Ave ue S.W. Extension Project would compensate for the loss of 1.32 acres of wetland by creatin acres of wetland on two parcels of 2.0 acres each. Mitigation wetlands include a diverse mix of emergent and scrub-shrub/forested habitat. The design plan accounts for the soils and hydrologic conditions of each site and the linking of adjacent wetland habitat. Floodwater storage, water quality, and wildlife habitat are some of the functions will be served by the created wetlands. The mitigation plan would exceed the requirements of the U.S. Army Cods of Engineers and the more stnn ne rr tigation requirements of the City of Renton. 7-i6 PURPOSE: Construct Roadway IN: Wetlands on Site AT: City of Renton DATUM: ADJACENT PROPERTY OWNERS: See Attached COUNTY: King STATE: WA APPLICATION BY: City of Renton SHEET 25 OF 25 DATE: 7/11/97 Sean S. Woodbury From: Gregg A. Zimmerman To: Jay B. Covington; Sandra L. Meyer Cc: Lin Wilson; Ronald J. Straka; Sean S. Woodbury Subject: Oakesdale Army Corps 404 Permit Date: Friday, July 18, 1997 4:14PM As I said I would do at today's Oakesdale Steering Committee meeting, I attempted to call Tom Mueller of the Army Corps of Engineers to set up a meeting between the Corps, Boeing, and us to discuss critical path aspects of the project and ways that may be available to expedite the 404 permit process in light of the Corps' heavy workload. Unfortunately I was unable to catch either Tom Mueller or Ann Urich (head of the section that will be processing our 404 permit) in the office. However, I was able to explain to the Corps representative who answered the phone our concerns about timelines, the October 1998 deadline we are up against to complete the road construction, and Boeing's need to have the road in place in order to open up their Commercial Aircraft Headquarters Building. I emphasized that the 404 permit is a critical path item. Although I was unable to talk to Tom or Ann, I did accomplish this much: 1. The Corps representative will inform Tom and Ann and the section responsible for King County projects (including Jack Kennedy) of the time line and critical path issues of the project. 2. He will also inform these individuals of Renton's request to set up a 3-way meeting between Renton, Boeing, and the Corps to discuss timing concerns and to explore ways in which Renton and Boeing may be able to assist with distribution of public notices. 3. Sandra, I left the Corps representative your phone number as a contact person since I will be unavailable next week. If you don't hear from them by Monday or Tuesday, you might want to give the Corps a call (764-3495). Page 1 THE CITY OF RENTON DEPARTMENT OF = __ N IN I ;- - ---_ PLA N G/BUILD NG/PUBLIC WORKS FOURTH FLOOR 200 MILL AVENUE SOUTH _=- RENTON, WASHINGTON 98055-2189 --- FAX: 235-2541 - To: 9iyCC rc0el,, Company: Phone: Fax: From: Scd �7 WooA 1 Company: Phone: -zc/1 -7 y7 Fax: Date: Pages including this cover page: Comments: 1045 Srju4'4 C, lcesd•�e /hid ud,� ��S THE CITY OF RENTON DEPARTMENT OF = PLANNING BUILDIN P B WORKS / G/ U LIC WO S - FOURTH FLOOR - 200 MILL AVENUE SOUTH RENTON, WASHINGTON 98055-2189 FAX: 235-2541 -= To: gi�c e Cc�c%r, Company: Phone: Fax: 72 From: H &v4o,4,� Company: Phone: Fax: Date: Pages including this cover page: Comments: l�✓yCt � Tic G�:�G- /� T/--c c(i�r.� Ylea,r �� l3 7— 6/23Cf �g / 7 JL^q stir✓v�p /� -7-Aa S�J(Li i�x 0 W 1,--1,-1 �✓ � o �d�l c 'Yu rn ✓ u jl�.r ,re-f k4f S2 THE CITY OF RENTON � DEPARTMENT OF PLANNING/BUILDING/PUBLIC WORKS ° FOURTH FLOOR 200 MILL AVENUE SOUTH RENTON, WASHINGTON 98055-2189 FAX: 235-2541 F; I To: Bryce Ecklein Company: Kato & Warren Phone: Fax: From: Scott Woodbury Phone: 425-277-5547 Fax: 425-235-2541 Date: 7/16/97 Pages incl this cover page: 2 Subject: Updated Wetland Gage Data Chart Attached is a revised crest stage gage chart for Wetland F of the Oakesdale Extension project updated to include the most recent readings. Please forward the information to Shapiro. Following is a table of the readings in the NGVD datum made at the crest gage in Wetland D since the gage was installed in April. Date Staff(ft) Crest(ft) 4/2/97 15.33 15.33 5/5/97 15.00 15.33 6/6/97 14.27 15.00 7/3/97 13.35 14.27 You should also be aware that we continue to want free-draining conveyance storm drainage systems (no backwater from the permanent pond of the water quality facility). This affects the water quality facility and wetland mitigation design north of SW 27th Street. Please contact Dick Warren for the status of his work in responding to our request for a free-draining design (no submerged outlets). Crest Stage Gage No. 6 West Cell of Wetland W-12, FEQ Wetland W7b Ground Elev. at Gage = 9.82 NGVD Elev. of Invert of 18" Culvert Outlet = 9.05 NGVD 15.1 - - -------- -- - ---- - --------- 14.6 -- --......—------ - 14.1 - ---- --------- ------------ ---— --- 13.6 ------- ----------- 13.1 -------- -------- - -- - j 12.6 - ------ ------------ Z 12.1 -.------------.....------._-. —------ a Previous Crest 1 w -- — ®Current Water Level 10.6 w 10.1 - M 9.55 -------- - 9.05 ---+--I a d a a a 7 a V a V in in m rn in m m m in in in �n to m m m m m co m so ro m to n n n n n n n A m m m m m m m m m m m m m m m m m m m m m a ru v 4 N Ln w r� m d o c mm mm om n m ao 0m om wm mn wm m m A 4 6 w n w d, o N N N M •- •-- 4 w O 4 w r� O 4 '6 'bN N M n Date Existing,severely choked culvert outlet replaced with same sized culvert by maintenance project(City File No.LUA-95-142,SME) Additional readings would have been recorded through 10/96 if readings would have been taken at the culvert outlet when the water was below the ground elev at the gage. Readings were made at the culvert when appropriate beginning 12196. CITY OF RENTON PLANNINGBUILDING/PUBLIC WORKS MEMORANDUM DATE: July 15, 1997 TO: Lin Wilson FROM: Scott Woodbury 5w SUBJECT: Corps JARPA for the Oakesdale Extension Project I have completed my review of the draft DARPA, assuming Bob Mahn and others on the project team will be doing detailed review for consistency with the EIS, in particular the wetland impact and mitigation areas. Following are my comments. South phase 2 mitigation site If a weir diversion is to be used for the south phase 2 mitigation, then I request making the changes I noted on the attached copy of the conceptual mitigation plan sheet 1 of 3. The diversion must not increase upstream water levels. We don't want to back water up on the Burlington Northern property to the south and yet we do need to allow water to flow into the mitigation wetland. I suggest we keep a weir to direct the flow through the mitigation wetland and back to the existing ditch, but ensure that the weir will not increase upstream water levels. Locating the weir where I have noted on the plan is consistent with the full buildout mitigation plan by Parametrix. There will be temporary wetland impact to a small area of existing wetland on the south mitigation site to provide access where the proposed mitigation will be constructed(see Exhibit A attached). The access will be on an old dirt road through the wetland, but the road is within the designated wetland for about 170 feet. There are ruts in the road within the wetland which are deep from past "4-wheeling" activities by trespassers before barriers to the site were erected. These ruts are full of ponded water much of the year. The road is also soft and will need to be filled in and the entire road made passable to trucks for construction of the mitigation. The delineation information and Corps confirmation for the existing south mitigation site wetlands was not included. The agencies will also be interested in the recent information collected on ground and surface water hydrology. Other comments Figure 17 does not show the existing wetlands on the south mitigation site. The wetlands that are shown on this figure differ from those shown in the wetlands report. The wetland impact areas in the Shapiro delineation report of 4/97 do not agree with the FEIS. Some explanation of this discrepancy must be provided in the DARPA. The April 14, 1997, letter to Joe Armstrong from Connie Gold included with the April 1997 delineation report should have been revised to reflect the results of the Corps confirmation visit, specifically that wetland F on the CSTC site extends from the ordinary high water mark in the creek to elevation 10 feet and that the CSTC wetland E is not regulated by the City or Corps. The April 14 letter also contains a Lin Wilson • Corps JARPA for Oakesdale Extension Page 2 needless and distracting reference to the Jones & Stokes work for the East Side Green River Watershed Project that I do not want to have included within the JARPA. The City's East Side Project FEIS is the appropriate place to identify that the Corps did confirm some wetland along the creek contrary to the previous Jones & Stokes work. The Oakesdale JARPA only need include the technical information on the new wetland F redelineation. The plan to change the outlet elevation of the existing wetland D was not identified. The agencies will also be interested in recent information collected on ground and surface water hydrology for the north mitigation site. I did not see any mention that the north mitigation site will be temporarily irrigated. Whether or not the construction of the north mitigation area will be phased should be clearly identified in the JARPA. The wetland mitigation will not be able to following the existing wetland boundary exactly as the conceptual mitigation plans show. There will need to be some work in the existing wetlands which should be identified as an enhancement. The elevation of the north mitigation area will not allow a free-drained outlet condition for the new tributary Oakesdale drainage systems. I again request that the design provide for free-drained outlets. I have not seen any documentation from the consultant to justify that a free-draining outlet is cost prohibitive or problematic for the design. With a free-draining outlet, the water quality pond adjacent to wetland D will need to drain north into wetland E and a portion of the berm between wetlands E and F would need to be removed. The wetland mitigation adjacent to wetlands C and D and the dead storage in the water quality treatment facilities would need to be lower in elevation. This would slightly reduce the area available for wetland mitigation. The JARPA should include a more detailed discussion of what work will be done under the proposed Springbrook Creek bridge. A plan showing the benches should be included, with dashed lines indicating the benches continuing beyond the bridge noted as future separate channel widening project under the City's East Side Green River Watershed Project. The need to relocate the trail under the bridge should be noted. Since the vegetation under the bridge will be removed or shaded out, what surface treatment will be used under the bridge to prevent erosion(i.e.,riprap). Other comments are as noted in the attached copies of selected pages of the JARPA. 1 agree with your comments to Section 7c of the application and have added my own notes. If you have any questions,please contact me at X-5547. U:OAKESDALE:97-010:S W cc: Ron Straka i5wh4ot if If if if Jr �f i if fit fit hiltIlk t VN 7a. DESCRIBE THE PROPOSED WORK:COMPLETE PLANS AND SPECIFICATIONS SHOULD BE PROVIDED FOR ALL WORK WATERWAAD OF THE ORDINARY HIGH WATER MARK OR LINE INCLUDING TYPES OF EQUIPMENT TO BE USED. IF APPLYING FOR A SHORELINE PERMIT,DESCRIBE A"WORK WITHIN AND BEYOND 200 FEET OF THE ORDINARY HIGH WATER MARK ATTACH A SEPARATE SHEET IF ADDITIONAL SPACE IS NEEDED. 1 The proposed project would construct a five-lane arterial (four lanes where no center turn pocket is needed) between SW 161h Street and SW 31 at Street, completing an infill segment between two portions of an existing road. It includes a bridge crossing of Springbrook Creek and also Includes continuous bicycle lanes and planting strips. Water qualityaad-datben features are included throughout the project. Treated water is released either to adjacent wetlands or o existing piped systems. f� y/�.,n„/�l �1 9Rn ? SP" t_'.6k j 741421snddica-te proximately one mile and construction is antticipated to occur in two phases with the first phase extending from SW 16" Street. basic project layout and cross-sections for both phases. j nr CA I ti i 7b.DESCRIBE THE PURPOSE OF THE PROPOSED WORK. The Oakesdale Avenue SW project is one of the planned arterial system improvements (Arterial Plan) identified by the City of Renton as mitigation for the Land Use Element of the adopted Comprehensive Plan (1995). The Arterial Plan was developed to provide a roadway system that will meet the year 2010 level of service standard and be concurrent with year 2010 land use development. Along the proposed project corridor, proposed development includes the 10,000 employee Longacres Office Park site. See Figures 15 and 16 for existing land use and zoning. The proposed Oakesdale Avenue SW project would have the following purposes: Increase the person-carrying capacity of the Renton Valley arterial system by the construction of improvements and the implementation of actions that support single-occupant vehicle (SOV), high-occupant vehicle (HOV), and transit modes of travel. Maintain, enhance, and increase pedestrian and bicycle travel by providing both safe and convenient routes for the commuting and recreating public. Support land use, neighborhood and business goals, and improve safety. 7a DESCRIBE THE POTENTIAL IMPACTS TO CHARACTERISTIC USES OF THE WATER BODY. THESE USES MAY INCLUDE FISH AND AQUATIC LIFE,WATER QUALITY,WATER SUPPLY,RECREATION,and AESTHETICS. IDENTIFY PROPOSED ACTIONS TO AVOID,MINIMIZE,AND MITIGATE DETRIMENTAL IMPACTS,AND PROVIDE PROPER PROTECTION OF FISH AND AQUATIC LIFE SRringbrook Cree —Sprin brook Creek would be crossed by anew brid a structure approximat 400 eet long and 82 feet wide. rid ruc ures piers would b ve dine. hi hwater within loo we. on in t wcim of t e rid a piers would be re ridge piers in the floodwa could increase the potential for channe scour. As the bridge IQnment has been re I e ]mum lers ara a to c ne hile still meeting basic design and safety standards, no further avoidance is practical (see also Alternatives Ana ysis section). The bridge will gaingo �iiscon�sidere m043 square f t of identified wetlands associated with Springbrook Creek. Because of the low height of the bridge, this sas an Impact that needs to be mitigated (see Conceptual Mitigation Plan). The area of Springbrook Creek where the proposed bridge would cross is currently heavily vegetated and pf&vIdes f riparian vegetations placement of thh�e, bridge structure. Runoff from the bridge deck and approach structures is t prior to discharge to adjacent wetlands or�wabaaWts. S�rnc svl�Etl CSTC Wetland Mitigation Site—The proposed alignment requires the filling of.24 of the Boeing Company's CSTC wetland mitigation site. The alignment as now proposed has been modified from that described in the Dra Environmental Impact Statement to minimize impact to the CSTC site. Further avoidance or minimization is not deemed feasible without c anging design standards and/or impacting adjacent development or other wetland sites (see also Alternatives Analysis). Mitigation for th impacted wetland area is included in the Conceptual Mitigation Plan. JW The area impacted serves as habitat adjacent to a permanent pond area in the wetland. This habitat would be lost at the CSTC site and mitigated at Wetland "C". The aesthetic quality of this end of the wetland would be altered by the placement of the road and would only partially be mitigated by revegetation of the roadway shoulder. A pedestrian trail that crosses adjacent to this end of the wetland would need to be relocated. Wetland "C"—The proposed alignment requires the filling of.025 acres of Wetland "C". A finger of this larger wetland needs to be crossed; this cannot be further avoided without creating impacts to adjacent property or other wetlands along the alignment. r The habitat value of this portion of Wetland "C" would be lost but will be replaced adjacent to Wetland"C"as part of overall project mitigation (see Conceptual Mitigation Plan). �- Wetlands "E"/"F"—The proposed alignment requires the filling of 1,01 acres of Wetlands"E"/"F. These wetlands provide valuable habitat for wildlife in the project area. The new roadway would increase the barrier effect to wildlife movement of an existing u ility berm that exists on t alignment and would is further separate wetlands on the east and west side of the alignment. rn�f 2 � r<e9 �4 j Y` The proposed alignment overlays the existing utility berm to minimize impacts to adjacent w tlands. Any further adjustment of the alignment would Increase impacts to these wetlands. A partial bridge structure (causeway) was evaluated but due to the low clearance over the wetlands,the shading impact was considered to be similar to filling. 3 Water quality of the adjacent wetlands will be protected as all runoff will be collected in a pipe system and directed to water quality swafesfer treatmenl,pnor to discharge. 41 Mitigation for wetland loss will occur in two locations. A portion will be mitigated to the north as part of the Wetland "C"/"D"mitigation design "i and a portion will occur west of the site on a City-owned parcel, Wetland "G", adjacent to the Boeing "South Marsh" (see Conceptual Mitigation Plan). L 7 Project area wetlands are shown on Figure 17. PREPARATION OF DRAWINGS: SEE APPENDIX A- SAMPLE DRAWINGS AND CHECKLIST FOR COMPLETING THE DRAWINGS. ONE SET OF ORIGINAL OR GOOD QUALITY REPRODUCIBLE DRAWINGS MUST BEATTACHED. NOTE: APPLICANTS ARE ENCOURAGED TO SUBMIT PHOTOGRAPHS OF THE PROJECT SITE, BUT THESE DO NOT SUBSTITUTE FOR DRAWINGS. THE CORPS OF ENGINEERS �'APPROX. <TLAN6- PROPOSED I _- - _B R_I_DG_E `Sprrook Creek (For u nd Tre 2628 _ _ 26 26 _ _ _ 24 t __-•-�..._ - ----- - — - 24 __.._._ _—_ I _— --- 22 22 ---._._ __ —1_ _ .._.._ ._�1^__ _ 20 ---- - I r ---- _. —_ . -_-.-- - 10 - — 1s16 1s — — 14 14 12 F-- _ _—{. _.�.. —- — - -,�— 1_ 12 -------_. ._-_ . ��_. 10 _-- -_ _ _ r - !T _.ST0 AGEEL. 3 0 '� -- -- _ 8 PROP --__ __ 15 ENC 47 4 r — - -- 0 �- EIS-TIN 0 G , _ _ -- G OUND - - ���--- --- = - 2 i F __- _ — 0 20 40 60 80 100 120 140 160 Mind SECTION G-G SCALE FEET Note: 2:1 Verticol Exaggeration 0 15 30 Vertical Datum: NAVD 1929 City of Renton Oakesdale Avenue SW Extension Cross Sections -- Figure 14 J � o .. . . . . . }s. . . . ./ 1 CATION . . . . . . . . . . . . . . . . . . ' •. ... ... . .... . . . . . . . . . . . �. ►4 . . . . . . +++++++ + ; ; "- + + t + + + + l+ + + + + + ' o. + + + + + + + + + + + . . + + + + + + . ) + + + + + g - NORTH Y A LEGEND �br 0 50 100 18 PROPOSED CONTOUR ( o\\� SC&L. 1'-100• —2 2— EXISTING CONTOUR EXISTING WETLAND EDGE �,�o,�• �}f r -------- LIMIT OF DISTURBANCE —7" FORESTED/SCRUB—SHRUB WETLAND COMMUNITY (PFO/PSS) F--�. „� r ++++±+±++ EMERGENT WETLAND COMMUNITY (PEM) EXISTING WETLAND f 4 — PURPOSE: Construct Roadway IN: Wetlands on Site DATUM: NAVD 1929 AT: City of Renton ` ADJACENT PROPERTY OWNERS: See Attached COUNTY: King STATE: WA _ APPUCATION BY: City of Renton SHEET 1 OF 3 DATE: 7/11/97 coy 64 541-If" a,ir 4VV3 s - — 4c. �. �n 2 G� Cyr����y,� �1� ��'✓,_,,�,Qr YCA SRI��CFN�! a rls Ape— > G ee44 -712Z lb, INFORMATION/ACTION MATRIX CITY OF RENTON OAKESDALE AVENUE SW PERMITS/SEPA Requirements Drawings Who Critical Dates/Status Comments FEIS Complete FEIS Renton 7/3/97-Complete FEIS Revisions and needs due to • Revised text for phase 1 new alignment K&W/ 6/23/97-Revise DEIS text revised phase 1 and phase 2 • Revised text to describe phase 2 road alignment Renton 6/23/97-Revise DEIS text alignments,and permitting -eliminate bridge structure&locate road over y requirements Metro sewer line fill • Revise excavation&fill quantities(phases 1 & K&W 6/23/97-Revise DEIS text 2) • Revise text for phases 1 and 2 storm water K&W 6/23/97-Revise DEIS text collection(no discharge to Springbrook Creek- conveyed to newly constructed wetland surface water mitigation facility) • Revise fill volumes in 100-year floodplain- K&W 6/23/97-Revise DEIS text need compensation storage volumes • Revise impacts to existing drainage facilities K&W 6/23/97-Revise DEIS text text(i.e.phase 1 north bridge structure would not pass over CSTC wetland outlet control structure&control structure would not need to be removed,underground vault with pumps used to aerate created wetland will need to be relocated) • Revise wetland impact text(phase 1 w/new Shapiro 6/23/97-Revise DEIS text alignment&phase 2 w/road on metro sewer line fill) • Revise phase 1 wetland mitigation Shapiro 6/23/97-Revise DEIS text • Prepare conceptual design phase 2 wetland Shapiro 6/23/97-Revise DEIS text mitigation • Revise estimates of habitat loss(phases 1 &2) Shapiro 6/23/97-Revise DEIS text • Revise discussion of impacts to sanitary sewers K&W 6/23/97-Revise DEIS text (i.e.phase 2 road to be placed on top of Metro sewer line fill-no pile driving near line) • Prepare responses to comments Renton 6/30/97-Complete • New alignment(phase 1) responses • Phase 2 road alignment-over K&W 6/23/97-complete Metro sewer line fill y drawings • Storm water collection facilities (phases 1 &2) • Wetland Mitigation Shapiro/ 6/23/97-complete K&W drawings I PERMITS/SEPA Requirements Drawings Who Critical Dates/Status Comments Mitigation Document Outline of Mitigation items to be Renton/ 7/31/97-Complete constructed/ erformed K&W Mitigation Document Corps Section 404 • JARPA Application: K&W/ 7/11/97-Draft Application JARPA Application same as (US Army Corps of • Section A: Shapiro to Corps HPA and Section 401 Engineers) • Applicant information 7/18/97-Final Application Certification,except Corps • Project Location&Description to Corps Permit also requires Section B • List of other approvals,etc. of JARPA Application • Section B: • Project Costs • Local Government Info. • Adjoining property owners • Section C: • Signature Block • Vicinity Map K&W 7/8/97-Complete Draft • north arrow 40 Vicinity Map • name of waterbody 7/16/97-Complete Final • location of proposed activity • latitude&longitude • directions to site • Plan View K&W 7/8/97-Complete Draft • north arrow 40 Plan View • name of waterbody& 7/16/97-Complete Final direction of flow • ordinary high water line,and wetland boundaries • dimensions of activity and impervious surfaces, distance from property lines, distance it extends into waterbody beyond the ordinary high water line,and wetland boundaries. • existing adjacent structures • adjoining property ownership • type/amount of fill,&area to be filled • type/amount of dredged material,area dredged, method,&location of disposal • types and location of aquatic,wetland,and 2 PERMITS/SEPA Requirements Drawings Who Critical Dates/Status Comments riparian vegetation • erosion control measures • utilities(water,sanitary sewer,power and stormwater conveyance systems) • stormwater discharge points • Cross Sectional View K&W 7/8/97-Complete Draft • ordinary high water line and 40 Cross Sectional View wetland boundaries 7/16/97-Complete Final • water depth • dimensions&distance into waterbody beyond ordinary high water line and wetland boundaries • dredge and/or fill grades • existing&proposed contours&elevations • types&location of aquatic, wetland,and riparian vegetation present at site • type&location of material used in construction& method of construction • Alternative Analysis(FEIS) Alternative analysis required for fill in wetlands or waters of US. • Non-JARPA Corps Requirements Shapiro 7/8/97-Complete other • Corps Confirmation of Wetland Corps requirements Boundaries • Agreement to complete confirmation Done • Wetlands that require confirmation: 6/27/97-Complete wetland along Springbrook Creek,wetlands confirmations west of Allpack,and Phase H wetlands. All wetlands have been previously delineated. • Phase II wetlands need to be flagged Done for Corps review. • Wetland Functions and Values 7/2/97-Complete WL Assessment Functions&Values • Complete functions and values assessment for all wetlands that will be filled. • Assess impacts. 3 PERMITS/SEPA Requirements Drawings Who Critical Dates/Status Comments • Complete functions and values assessment for wetland mitigation bank pre-and post-mitigation requirements. • Coordinate with City of Renton on Shapiro/ 7/4/97-Complete wetland and buffer mitigation K&W/ coordination requirements. Renton • Conceptual Mitigation Design Shapiro 7/6/97-Complete • Need wetland bank information from Conceptual Mitigation City of Renton: topography, Design groundwater levels,drainage Renton 6/27/97-Need info. from patterns,hydrologic connections,soil Renton types,and any preliminary plans. • Review available data. Shapiro • Revise preliminary wetland bank Shapiro plans to fit the specific mitigation needs of Oakesdale project. Shapiro/ 7/7/97-agency agreement • Meet with resource and regulatory K&W/ agencies to get agreement on design prior to submittal. Renton • Revise mitigation plan accordingly. Shapiro 7/9/97-revise mitigation plan Construction Drawings(50%,75%, Shapiro/ 7/8/97-11/24/97 100%) K&W Shoreline Substantial Complete Application- K&W 8/1/97-Submit complete City has elected not to use Development(City of application JARPA Form for Shoreline Renton) • Master Application Form K&W 7/25/97-Complete form Permit. • List of Current Property owners surrounding K&W 7/15/97-Obtain from property Renton Assessors Office • Project Narrative K&W 7/25/97-Complete narrative • current use of site&existing y improvements • name of adjacent water and wetlands • nature of existing shoreline • proposed improvements&use construction costs and dates • Neighborhood Detail Map K&W 7/16/97-Complete • scale of V=200' Neighborhood Detail Map • lot lines,land uses,building K&W/ 7/9/97-Obtain info. from outlines Renton Renton • properties&zoning Win 2500 ft of project 4 PERMITS/SEPA Requirements Drawings Who Critical Dates/Status Comments • Site Plan K&W 7/16/97-Complete Site Plan Site plan at 1"=20'if site is one • date,north arrow,scale(1"= y' acre or less. 40') • dimensioned property lines • existing land&water contours 5'intervals • ordinary high water mark • names of nearby streets Renton 7/9/97-Obtain existing • existing driveways Renton info. from Renton • existing public improvements (curbs gutters,sidewalks,street trees,fire hydrants,utility poles,etc.) • existing&proposed structures K&W/ (parking,driveways,trees, Renton fencing,retaining walls,signs, f, easements,lighting fixtures, utility junction boxes,etc.) • proposed open spaces, landscaped areas • utility plan(sewer,water, hydrants,drainage,and stormwater run-off) • topographic features(streams, lakes,marshes) • Grading Plan K&W 7/22/97-Complete Grading Grading plan required if grades • type of material,tons and cu. 41 Plan on site exceed 20%or amount yds. for fill and extraction of earth disturbed exceeds 500 • disposal site for extractions cu.yds. • Drainage Report • Drainage Plan K&W 7/22/97-Complete • stamped by licensed engineer • stamped by licensed engineer `y Drainage Report and • comply w/Renton Municipal Code • comply w/Renton Municipal Drainage Plan (Section 4-22)&1990 King County Code(Section 4-22)&1990 Surface Water Management Design King County Surface Water Manual Management Design Manual • Landscaping Plan ? 7/22/96-Complete • scale same as site plan `L Landscaping Plan • date,scale,north arrow • existing and proposed contours 5'intervals • nearby streets&public improvements • buildings,parking areas,access 5 PERMITSMPA Requirements Drawings Who Critical Dates/Status Comments • location&size of planting areas • proposed berming,locations,& height • location,size&spacing of existing&proposed shrubs, trees,ground covers,etc. • names of existing&proposed vegetation • planting details Colored Display Maps of K&W Complete prior to Neighborhood Detail Map,Site Plan, presentation w/ and Landscaping Plan for presentation Environmental Review purposes Committee and Hearing Examiner HPA(WDFW) JARPA Application: K&W 8/29/97-Submit complete Only Sections A and C of • Bridge Crossing • Section A: 41 Application JARPA Application required. • Applicant information a s Same application and drawin • Project Location&Description as Certification. g • List of other approvals,etc. • Section C: • Signature Block • Vicinity Map K&W 8/15/97-Complete Vicinity • north arrow y Map • name of waterbody • location of proposed activity • latitude&longitude • directions to site • Plan View K&W 8/15/97-Complete Plan • north arrow y View • name of waterbody& direction of flow • ordinary high water line,and wetland boundaries • dimensions of activity and impervious surfaces, distance from property lines, distance it extends into waterbody beyond the ordinary high water line,and wetland boundaries. • existing adjacent structures • adjoining property 6 PERMITS/SEPA Requirements Drawings Who Critical Dates/Status Comments ownership • type/amount of fill,&area to be filled • type/amount of dredged material,area dredged, method,&location of disposal • types and location of aquatic,wetland,and riparian vegetation • erosion control measures • utilities(water,sanitary sewer,power and stormwater conveyance systems) • stormwater discharge points • Cross Sectional View • ordinary high water line and K&W 8/15/97-Complete Cross wetland boundaries y Sectional View • water depth • dimensions&distance into waterbody beyond ordinary high water line and wetland boundaries • dredge and/or fill grades • existing&proposed contours&elevations • types&location of aquatic, wetland,and riparian vegetation present at site • type&location of material used in construction& method of construction 401 Certification& Same as HPA JARPA Application Same drawings as HPA JARPA K&W 8/29/97-Submit Same application and drawings Temporary WQ Application Application as HPA. Modification Colo NPDES for Stormwater Pollution Prevention Plan(SWPPP) K&W 9/19/97-Complete SWPPP Required for construction Construction Activity text: activities that disturb 5 acres or (Ecology) • Project description more. Includes a Notice of • Existing site conditions Intent(NOI),public notice, • Adjacent areas certification and preparation of • Soils SWPPP. A notice of 7 PERMITS/SEPA Requirements Drawings Who Critical Dates/Status Comments • Critical areas Termination(NOT)must be • Erosion and sediment control BMPs filed following completion of • Permanent stabilization construction activity. • Stormwater management considerations • Inspection and maintenance • calculations(for design of stormwater controls) • Non-ESC BMPs Site Plan Map(for SWPPP): K&W 9/3/97-Complete Site Plan • Vicinity map(corner of site plan Map • Existing contours • Existing vegetation(tree lines, grassy areas,etc.) • Soils • North arrow • Critical erosion areas • Existing drainage patterns • Final contours • Limits of clearing and grading • Cut and fill slopes • Locations and details of conveyance systems • Location of BMPs • Locations and details of sediment control facilities • Location of non-ESC BMPs(i.e. equipment washdown areas,etc.) 8 Sean S. Woodbury From: Sean S. Woodbury To: Lin Wilson Cc: Ronald J. Straka Subject: Corps JARPA for the Oakesdale Extension Date: Monday, July 07, 1997 2:05PM This e-mail is in follow-up to my memo I provided to you earlier today. I talked to Bryce Ecklein of Kato & Warren about the JARPA and he and I are both concerned with how we address the difference between the level of mitigation in the JARPA and the mitigation in the City's EIS. Bryce and I discussed some ideas for how this would be done. He will contact you regarding this issue, but I thought I would summarize a couple of options we discussed: 1. Get a determination this week from Gregg Zimmerman on what the replacement ratio would be under the City's ordinance assuming advance mitigation for the phase 2 impacts. The current ordinance does not specify replacement ratios for advance mitigation for Category 1 and 2 wetland impacts. If the replacement ratio may be reduce from 3:1, then the JARPA could show exactly what additional acreage would have to be constructed on the bank site when phase 2 is actually constructed, assuming no credit is allowed for enhancement per the current ordinance. The JARPA would note that the mitigation plan for the additional mitigation required to satisfy the City's ordinance would be developed when the phase 2 project is implemented. 2. In the absense of a determination from Gregg Z, the JARPA could explain that the amount of additional acreage required to meet the City's ordinance would be determined when the phase 2 project is implemented. It would be less than identified in the EIS if advance mitigation is used. Exactly how much less would depend upon how successful the advance mitigation north of the SW 27th Street was at the time phase 2 was implemented. By delaying the decision we also may be able to take advantage of a pending ordinance change that will allow use of enhancement to reduce replacement ratios. The detail mitigation plans for the bank site would not be developed until phase 2 is implemented and a determination can be made as to the exact amount of mitigation that must be constructed. In either case the JARPA should note that the mitigation area needed to satisfy the City's ordinance is available on the bank site in accordance with the EIS and has been reserved until phase 2 is implemented. Exactly how much more information we need to provide on the bank site in the JARPA is an issue Bryce also intends to discuss with you. The JARPA should also strongly emphasize the advantages of delaying the mitigation plan for the bank site: a. allows more time for additional hydrologic information to be collected on the bank site and be incorporated into the design b. saves unnecessary redesign if the advance mitigation proves to be successful so that the amount of mitigation needed under the City's ordinance is reduced. The JARPA should also emphasize that the area north of SW 27th Street is proposed as the complete mitigation for phases 1 and 2 of the project as far as the Corps in concerned, assuming that the mitigation for phase 2 is constructed in advance of the impact and meets its performance standards when the phase 2 impact occurs. Separate Corps permit approval would be required to construct the City required mitigation on the bank site, but the permit review would be limited only to the mitigation activity (unless the advance mitigation is not successful and the Corps determines that more area is needed in addition to the advance mitigation area). The roadway construction activity would have already been authorized under its own permit and the mitigation required by the Corps under the roadway permit having already be completed. This approach of course means that we cannot point to the Corps as requiring mitigation equal to the City's ordinance. We will have to rely on the WDOE (not WDFW) to provide us something we can show to the TIB to demonstrate that the City's mitigation does not exceed what is required by the state. Page 1 CITY OF RENTON PLANNINGBUILDING/PUBLIC WORKS MEMORANDUM DATE: July 7, 1997 TO: Lin Wilson FROM: Scott WoodburyS6) SUBJECT: Corps JARPA for the Oakesdale Extension Project After further thought over the holiday weekend, I have decided that I do not agree with Shapiro's proposal to only include the wetland mitigation north of SW 27th Street in the JARPA to the Corps. I recommend that you direct Shapiro to continue as previously agreed to prepare a wetland mitigation plan for the phase 2 impacts on the City's wetland bank parcel for inclusion in the JARPA. Following are my observations on this subject: • Through the City's EIS, the Corps and other agencies have (or will have) full knowledge that the City intends to use the bank site as the mitigation site for phase 2. I feel we would be mistaken to assume that the Corps will issue a permit for mitigation that is less than what the local jurisdiction has already disclosed it has to do in order to be in compliance with its own ordinance. Furthermore, the Corps would be aware that the bank site is where the City proposes to create wetland that will satisfy its own ordinance requirements and that a permit to do so will be required from the Corps. Anything less than full mitigation as required by the City I would think could be considered piecemealing and not a single and complete project. If this is not the Corps conclusion it certainly may be WDOE's. • I feel that we should not assume that state agencies will be willing for the Corps permit to only include the mitigation north of SW 27th Street. I feel there is less risk in submitting a mitigation plan for the bank site. To me there is more risk in relying on all other agencies and interesting parties reviewing the Corps permit to overlook the fact that the EIS says mitigation must be constructed on the bank site to satisfy the City's ordinance. Also, since the state agencies do not have final permit authority over the bank site, it would be presumptuous for the state agencies to agree to such a plan. The state agency cannot guarantee that the Corps will issue a permit for the bank site mitigation for phase 2 separate from the 404 permit for the road. • In order to help satisfy the Corps that the area north of SW 27th Street is sufficient for Corps approval, Shapiro proposes to enhance the existing wetlands. The enhancement may not be used to comply with the current City ordinance so we could be risking an additional expenditure that the TIB may not fund. • From a landscape perspective, the mitigation area north of SW 27th Street cannot provide the water quality, habitat, and hydrologic functions and values that the existing phase 2 wetland provides or what could be provided at the bank site. We also should not expect to achieve a Category 1 mitigation north of SW 27th Street (which would require 100-foot buffers be provided), nor should be expect it to achieve a function and value equivalent to the impacted phase 2 wetlands. I feel that the Corps will recognize this as well. I think we should be assuming that the mitigation north of SW 27th Street may ultimately achieve Category 2 wetland criteria, not Category 1. Lin Wilson Corps JARPA for Oakesdale Extension Page 2 • I am of the opinion that the bank site does have sufficient information on which to create a design. While I agree that groundwater data is sparse, the mitigation site does have a reliable source of surface water as evidenced by crest stage gage records for the Boeing South Marsh and City of Renton Wetland. The ditch flowing through the bank site can be manipulated through use of weirs to relative high levels (i.e., 14 feet NGVD) without causing upstream flooding problems, affording the needed hydrology for the wetland. I feel the proposed mitigation area north of SW 27th Street has much less surface hydrology, the only surface flow tributary to the mitigation being from the new road, not 250 acres as is tributary to the mitigation site. • I am also of the opinion that the Talasaea/Parametrix design is generally sound and can easily be divided into implementation phases. • I also feel that we are compromising the drainage design by have to resort to submerged outlets. I had requested that Kato & Warren pursue a free draining outlet design only to feel that I have been ignored. Only because I thought it might work to submit the Corps JARPA with only the mitigation north of SW 27th Street did I feel we could maybe live with a submerged outlet to facilitate the permitting process. The idea to use submerged outlets to afford more area for wetland mitigation was only proposed to me last Thursday. The use of submerged outlets for this purpose has not yet been confirmed with maintenance. However, I no longer recommend limiting the mitigation to the area north of SW 27th Street and request that the drainage design not have submerged outlets. • I am concerned with the lack of any detail to the water quality treatment facilities. It is impossible to confirm that the sizing for the facilities is adequate. The area believed to be available for wetland mitigation north of SW 27th Street may be less than currently anticipated, especially since providing free draining outlets will require more area for the water quality facility than a submerged outlet design. • It was known for some time that the Corps permit needed to cover both phase 1 and 2. However, I was not contacted by the consultants for the bank site information until very recently. We should have already had a design for both phases 1 and 2, but the consultant is behind on both. I too would be concerned with having to pull together a design in one week, but advance planning should have prevented such an emergency. Because we now have a need for an emergency design, I feel we are unwisely looking for a way out that will only cause more problems than it solves. As part of the project team, I feel I could have done a better job at ensuring the permitting stayed on track. However, I also feel that we hired the consultants to prevent such problems from occurring and to see that things get done. • With regard to the TIB participation, I do not understand why the TIB cannot cite what guidance they use to base their funding level for wetland mitigation. To ask a state agency, other than WDOE which has wetlands authority under the Section 401 certification,to specify in writing that mitigation must be done to the City's requirements just so the TIB will fund all of the wetland mitigation is setting an undesirable precedent. I will be out on vacation the rest of the week. I will be leaving a phone number with Ron Straka where I may be reached if necessary. If you have any questions, please contact me at X-5547. U:OAKESDALE:97-008:S W cc: John Thompson Ron Straka CITY OF RENTON PLANNINGBUILDING/PUBLIC WORKS MEMORANDUM DATE: July 7, 1997 TO: John Thompson FROM: Scott Woodbury10 SUBJECT: Use of Submerged Outlet for the Oakesdale Extension Project I am sending this memo to ask that you work with Dick Warren of Kato & Warren to resolve whether or not submerged outlets are to be used for the Oakesdale Extension project. Based on my understanding of the project, a free draining outlet could be designed at all outfall locations, but would have a higher initial construction cost. A submerged outlet would be less costly to construct initially, but have higher maintenance costs, assuming the same pipe size may be used as in the free outlet condition to meet hydraulic conveyance requirements. I am asking your help to resolve this issue because whether or not submerged outlets are used depends on the project design and cost estimates (which Dick Warren can provide) and on the assumptions regarding the cost and frequency of maintenance. The cost comparison may show that it is less expensive over the life of the project to have a submerged outlet. However, the comparison should also take into account that a higher level of maintenance for the new Oakesdale roadway may require a reduction in maintenance frequency at some other location, unless City staffing levels are increased or the City contracts out the additional maintenance work so that the level of service remains the same. I believe contracting the work out would cost more money than if City crews did the work and increasing staff may not even be an option. Thanks for your help. Dick Warren will be contacting you soon to discuss this issue. If you have any questions, please contact me at X-5547. U:OAKESDALE:97-009:S W cc: Lin Wilson Dick Warren,Kato&Warren lk CITY OF RENTON PLANNING/BUILDINGIPUBLIC WORKS MEMORANDUM DATE: July 3, 1997 TO: Barry Knight FROM: Scott Woodbury SUBJECT: OAKESDALE AVENUE SW EXTENSION ADDITIONAL PHASE 2 MITIGATION SITE INFORMATION Attached is the following additional information for the Oakesdale Avenue phase 2 mitigation site for your use: • Wetland delineation report by David Evans and Associates dated December 3, 1991. The Corps of Engineers has confirmed the wetland delineation done by David Evans as being valid until 8/22/01 per Corps letter dated 8/22/96 (see attached). • Hart Crowser preliminary environmental assessment dated October 11, 1991 (referred to in the assessment as Parcel 14). I wish to draw attention to Figure 2 of the report that shows a former meander of the Green River that passed through site. The location of Parcel 14 (the mitigation site) was incorrectly shown in the figure. I have marked up the figure to show the approximate location of the mitigation site. I feel the old meander is important because it was likely filled with a sandy material that may create a seepage problem from the proposed wetland unless mitigated (impervious membrane, etc). • Boundary survey map(I I"x17")by Bush Roed & Hitchings dated 1/16/91. • Title report for the mitigation site dated 6/24/92 by Transamerica Title Insurance Company. • Aerial photograph dated 9/2/95 at 1"=500'. I will need this returned as well as the conceptual mitigation plan on foam core board I had loaned to you earlier. • 1962, 1978, and 1984 aerial photographs with the mitigation site shown. These figures were created for Muffy Walker of the Corps in a memo dated 7/15/96 (from wetland bank project file- agency coordination). • 1962 aerial topography with the approximate boundary of the mitigation site shown (the vertical information is about 0.09 feet lower than NGVD 1929. • 1980 topography by the Corps of Engineers with 2-foot contour interval (NGVD 1929 vertical datum). • AutoCad file of the tributary area for the mitigation site (basnbdry.dwg). This drawing may be inserted into the mitigation site drawing I provided using 0,0 as the origin, no rotation, and a scale factor of 1. Barry Knight Additional Information for Phase 2 Mitigation Site Page 2 • Copy of the draft mitigation plan text with my handwritten comments. Please discard the copy included in my July 2 transmittal. Following are some miscellaneous comments that I have regarding the mitigation site: • Some of the material that will be excavated will be suitable as fill for the roadway project, particularly the mound of fill material on the south-central portion of the site which measures about 10,000 cubic yards. • According to conditions of the quit claim deed of the property to the City, the site may not be used for any purpose that does not maintain the property as open space. • The City still has to do wetland mitigation in accordance with a 1992 agreement with Glacier Park (currently 4.17 acres need to be created with a potential for a total of 5.33 acres, assuming a 1:1 ratio). I feel it would be valuable to construct the Glacier Park mitigation at the same time as the Oakesdale mitigation. When designing the Oakesdale mitigation please keep in mind that the mitigation plan may be expanded to include the additional 5.33 acres for the Glacier Park mitigation. Because of the short time frame to pull the Oakesdale JARPA together, and other reasons, I don't feel that we should try to show the Glacier Park mitigation being done concurrent with the Oakesdale mitigation. If you have any questions, please contact me at 277-5547. U:OAKESDALE:97-007:S W attachments cc: Joe Armstrong Mark Boule I 1970 Aerial Photograph tl �,j' '3 3 •�/ .Y Par .°or s'�L Y Ir ..} .�.r+ ^• L ��, y hklt'Itry ,i.g y b �� i t. .7 _.. +r ' - �� �tr",F,.d x ,� '.n eR y I 't,♦ ,R �. 1... ,., 's �F �4/'1SLL'�'Pp .t u.. !Si �1it: +,EAr :'. ' ��y: '7i 1 3 t n .at'..•r;n, 4`3"t:.•: At(�CF .0 t �rl I `') .. ..•r'... �.r ...t: � q.a.+ '� �.' ` Ir� .ri� ' , lW.,�� t Ir.��-�"�"�' � I��� -�'. 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QJ Note: Base map prepared from drawing provided by 13 Parcel Number HARTQ?f'I%$£' , Walker Assoclates dated 1985• J-3405B Flnliro �) AX -72L'-576a6 CITY OF RENTON PLANNING/BUILDING/PUBLIC WORKS MEMORANDUM DATE: July 1, 1997(Revised) TO: Barry Knight -5'w FROM: Scott Woodbury SUBJECT: OAKESDALE AVENUE SW EXTENSION PHASE 2 MITIGATION SITE INFORMATION Attached is the following AutoCad Release 12 file for your use: Basemap.dwg. This file is for use in developing the mitigation plan for the phase 2 wetland impacts. The drawing includes the following: • City of Renton standard title block in paper space with model space view of the mitigation site at 1"=100'. • Contours at 1.64' intervals. The contours were created using the City's new 0.5 meter topography in the NAVD 1988 datum scaled by the appropriate conversion factor into feet. To convert the elevations into the same datum as the Oakesdale project (NGVD 1929), subtract 3.58 feet from the NAVD 1988 elevations. We tried using a terrain modeling program to create contours at a 2 foot interval from the metric surface model, but the conversion introduced too many errors. The drawing is also in the horizontal coordinate space of NAD 1983/91. I have asked W&H Pacific to provide the information needed to translate the Oakesdale design into NAD 1983/91 so we could easily use the information to do a reverse translation. • Property and street right-of-way lines. • Boundary of existing wetlands on the mitigation sites and adjacent properties from the City's wetlands inventory. Also I am transmitting for your use the following information: • Conceptual mitigation plan drawing at 1"=60' for the mitigation site by Parametrix mounted on foam core board. • Hard and digital copy (Microsoft Word) of the draft mitigation plan. I have not reviewed this particular document version which should be considered a work yet in progress. If you have any questions, please contact me at 277-5547. U:OAKESDALE:97-006:S W attachments cc: Joe Armstrong CITY OF RENTON PLANNINGBUILDING/PUBLIC WORKS MEMORANDUM DATE: July 1, 1997 TO: Bryce Ecklein FROM: Scott Woodburyw SUBJECT: OAKESDALE AVENUE SW EXTENSION WETLAND INFORMATION Attached for your use are copies of the following: • Two copies of a chart showing groundwater monitoring well data. The groundwater elevations are based on approximate ground surface elevations. Once I have survey information for the monitoring wells, then I will revised the chart. • Two copies of a August 2, 1995, report for the phase 2 mitigation site by Dames & Moore titled "Report of Geotechnical Investigation, Revision 1, Wetland Mitigation Banking Sites, Renton, Washington." • One copy of an AutoCad plot showing the approximate location of wetland F along the creek adjacent to the Boeing CSTC site that I created using the City's topographic data. The AutoCad release 12 file "wetlnd£dwg" is included on the attached disk. The file is in the NAD 83/91 coordinate space and the contours are in feet NAVD 1988. I have hand written on the plot the corresponding elevation of the contours in the NGVD 1929 datum. The thought was that Shapiro could use the City's topographic data to determine the area of the revised boundary for wetland F from the recent redelineation work confirmed by the Corps. The Corps indicated that designating the area below elevation 10 feet (NGVD 1929) as wetland would be acceptable. The area of the wetland I created on the drawing is 11,402 square feet. Thanks for your help. If you have any questions, please contact me at 277-5547. U:OAKE S DALE:97-005:S W attachments cc: Joe Armstrong Aw CrL r"' ZVM heeded j hQ A 44 s s tt - I � jZti Y �-f 3 f p :,jile,11 A-4/ r 713 et r 1° der S ►a�o lh ��� l�G� �, Ad V keno ra G d uerf�S,C. NO k )gam l Ile i ao / *VIA �e,nW41or., kr . V�sue{.S��d p,� per.'»-/� �k..•n.�....o� L�Yl y AY Wv- /J/� ------ - t Ale,*� City of Renton Oakesdale Avenue SW Extension Permit Schedule — 6/27/97 1997 1998 Permit/Activity June July August Sept Oct Nov Dec Jan Feb • FEIS (u«)(3) • Mitigation Document ' 4 5 • Section 404 �. • Shoreline Substantial Development • HPA • Section 401 • NPDES Construction June 27—complete FEIS Develop (2) July I —to ERC (3) July 3— " �'k�'� /� �3hj � 74 (a) July I I cs> July IA—fi '^anon Process Oakesdale Ave Phase 1 A -- SW 16 to SW 27 Task Start Duration E;�d 1996 T- 1997 1998 Ma !Juni Jul u SeploctNo DecJaniFebMa Ap a IJun Jul Au ISep OctNo De Jan Feb Mar Ap a Jun Jul Au iSep O I Finalize Details of Boeing Participation Dec-04-96 140.00 d Jan-3 I ! Boeing Co. �� 1 ! I - Dec-02-96 ; �14.00 dl Feb 04w97 2 (Complete TIB/TIA Design Prospectus 2 3 I,Submit'TIB/TIA Prospectus v Feb-05-97 :: 3.00 d Feb 07- 7 3 `l. ... TIB/TTA � sgn Funding Approval I I eb 10=97 �4 00=d1 r 257 ! 4 j _- ...- - 4A TIB/TIA Cost Increase Approval Jun 16-97 63 00 d Sep 12-97 I [ -I 4A _._. ._ ....._ _.._ I I ; �_ Complete'Draft EIS Feks-03-97 i 5 Iar-2S=97 C 6 Issue DEIST Nlar-31-9 7r 6.00 d' Apr-07-97 6 - 22.00 di May-06-97 I I I 7 07-9 7 7 DEIS Comment Period 4 7A Complete and Publish HIS May- 41.00 d Jul-03-97 I i 7A 07-97 __ 7B FEIS A eaI Period Jul-07-971 10.00 d Jul-18-97 j❑ �B _ PP -- 8 IShoreline Substantial Pen-nit Application Jul-21-97 15.00 di Aug-08-97 ! C �8 ! - J 8A 8A ke flag wetlands for delineation Shap iro Mar I7-97 5.00 d Mar-21-97 �- (�P } Nlar-24-97' 65.00 & Jun-23-97I -------- 8C Initial"meeting with USACE, VJDOE Oct-O_ 96 1.�0 d act 02'=96 ; 8B Pre-desi�n and wetland survey W&H Pacific) ; 8D Pre-application meeting with USACE Oct-21-96 1.00 dOet-21'-96 18D _8E j Complete final wetland report Jun-2 I-97 15.00 d; Jul-15-97 pu �'ini9�.. ' s, , yc � Ci 8E 8F Prepare Sect. 404 permit for submittal to USA Jun-13-971 15.00 dj Jul-03-97 8F I 8G I Issue Sect. 404 permit (USACE) Jul-07-971 90.00 dl Nov-10-97 8G 9 iMitigation Document Activities Jul-14-97 15.00 d' Au2-01-97 9 16 Complete'Design'Report ! Dec-a2=96 82.00 d . Mar-3I-97 i 110 1 IValue Engineering Study Apr-07-97 �',16.00 d Apr-28-97 i 12 Select Consultant for PS&E Feb-03-97 37.00 d Mar-26-97 12 13 Scope&Negotiate Consultant Design Contrac Apr-01-97 17.00 d ;Apr-23-97� 113 1 414 Execute Consultant Desia ._ i 4 n Contract 2 ,O 15 ay= -97 '23.00du3 a I 1 I 15 " I I 15 Right--of--Way Plans Jun-16-971- 10.00 d Jun-27-97 ! ❑; A 15 Final Design - - - - ?- --- -_ --- Jun-16-971 27.00 dl Jul-23-97 15B 16 Prepare PS&E _ _ _ Jul-24-971 80.00 dl Nov-14-97 I 1i6 I j I 17 Permit Activities _ May-07-97 125.00 dl _Oct-31-97 I ! -I 17 ; 18 Community Involvement 1 Feb-03-97 169.00 dL Oct-01-97 I i 18 19 Prepare TIB/TIA Construction Prospectus Oct-17-97 20.00 dl Nov-14-97 I 20 Submit TIB/TIA Construction Prospectus j Nov-17-97 5.00 d Nov-21-97 I 1 0 0 21 TIB/TIA Construction $ Approval Nov-07-971 20.00 d) Dec-08-97 1 I i 21 22 Coord. with Valley Drainage Improvements t Jun-16-97 105.00 dl Nov-12-97 23 Coord._ with Boeing Longacres Office Park Jun-16-971 105.00 di Nov-12-97 j iL IL V 2 23 Coord. with Hunter-Douglas project Jun-107 d 105.00 Nov-12-97 j ( j i . 23A 24 Relocate Puget overhead facilities _ _ Feb-03-97 240.00 d Jan-14-98 i 24 j 25 Boeing ROW Dedication Activities -- Jun-30_97 90.00 d Nov-04-97 I I toeing CoJ 2 i 26 Other ROW Acquisition Activities _ Jun-' 90.00 d Nov-04-97 2� j 28 Advertise -97 22.00 d Jan-09-98 12 Dec-09 ! _ 2929 Award, execute contract I Jan- 40.00 d Mar-10-98 ! 30 Construction, SW 16 to SW -11 27 Mar -98L 145.00 d Oct-01-98 I i Printed: Jun-20-97 Pane 1 Oakesdale AvePhase 1 A -- SW 16 to SW 27 MW__ _ _ Pre-design and wetland sury ---\Initial meeting with [7SACE --- - Pre applic,atlon z eetlntr wt — -- -- Complete final wetland repo u1 Other ROW Acquisition Ac Prepare Sect. 404 permit for�.�u`fl�g�♦ �tlaixd�-fodohr��a —, _ .,.,....,F_..-..,.......mom ' - - ---- ---------_ Award Complete Design Report = clue En«lneering StudyAll' -- _..._ — -- \ �- I -— --- - - Complete TIB/TIADesign - Submit TIB/TIA Prospectus --- - TIB/TIA Design Funding A -`� TIB/TIA Cost Increase App :,.,.... Execute Consultant Design Issue Sect. 404 permit (US _ - Project Definition Final Design Scope & Negotiate Consulta Construction, SW 16 to SW Finalize Details of Boeing P . __- _ .:: --7 -.. -------—� - - - i - i Select Consultant for PS&E ; Coord. with Valley Drainag - _---_.._ Advertise Complete Draft EIS _ Coord. with Boeing Longac Community Involvement TIB/TIA Construction $ Ap ------ Coord. with Hunter-Douglas j Y Complete Details of Boeing I`--------Issue DEM -- —_ Submit TIB/TIA Constructi ' Relocate Puget overhead fac - --- - \ Boeing ROW Dedication A j ----- - ----- - --- -- --- -- t Prepare TIB/TIA Constructi I DEIS Comment Period - - - = Permit Activities Mitigation Document Activi Complete and Publish FEIS __ Prepare PS&E Shoreline Substantial Permit i FEIS Appeal Period - Printed: Jun-19-97 Page 1 a ; 1 fT P-ROX.-_.SURFACE WATEK M , N239345 SF , 0 _ .54 - - - SO ` - - --- ------------------ - - - -- - t APPROx. , FACE - , N61,3 SF OR N 1.4 - - -1 AC � PROX. D - 1 . .9 SF OR "2 0 AC • - SCALE. 00 L _ . . . . . . SSS 6/25/97 . . .;j. . . . . :--. -- ---- -'i- ' - � y � ` i ^ � ` \ ` � | � | ' ' � � , � � � . . . . � , . . . . . . ^ . " � . . � . . H ^ ` � . . . . ` . ' . . Ufa rN `/\ . . . . | � . . . . . . . . . . . . . . . . ! . ` / . . . . . . . . � . . . . . . . ^ . , . , , . . . . , , . '! . . . . . . / . . / . . .. CH m INFORMIATION/ACTION MATRIX W CITY OF RENTON OAKESDALE AVENUE SW 0 a d PERN[M/SEPA R"p iretnents who Critical DateslStatae COMM"" FgIS Complete FEIS Renton 713197-Complete FFI.4 Revisions and needs due to • Revised text for phase l new alignment K&W/ V23197-Revise DEIS text revised phase l and phase 2 • Revised tent to describe phase 2 road alignment Renton 6/21197-Revise DFIS tent alignments,and permitting -eliminate bridge structure&locate road over + requirements Metro sewer line fill • Revise excavation&fill quantities(phases I & K&W 6123/97-Revise DFIS text 2) • Revise text for phases 1 and 2 storm water KAW 6123197-Revise DFIS tent collection(no discharge to Springbrook Creek- conveyed to newly oonstrvcted wetland surface water mitigation facility) _ • Revise fill volumes in 100-year floodplain - K' G/23/97-Revise DFIS text <r need compensation storage volumes a • Revise impacts to existing drainage facilities K&W 6123197-Revise DEIS text o text(i.e. phase I north bridge structure would m not pass over CSTC wetland outlet control structure&control stnrcture would not need to be removed,underground vault with pumps used to aerate created wetland will need to be -R Revise relocated) Revise S '7 Revise DES text • Rev wetland impact text{phase 1 w/new Shapiro 6/23/9 9 alignment&phase 2 wl meal on metro sewer line fill) AL • Revise phase i wetland mtUption Shapiro6123197-Revise DEIS text �' 1 l design pba-2 wetland Shapiro 6J23l7J-Revise DII3 teat • mitigation Shapiro 6J23197-Revise DEIS text m • Revise estimates of habitat loss(phases I do 2) K&W 6l23197-Revise DM text w 0 • Revise discussion of impacts to sanitary sewers (i.e.phase 2 road to be placed on top of Metro 'Y sewer line fill-no pile driving near live) CA m $ • Preparo-nespoases to comments Renton 6J30J97-Complete • New aligmnent(phase 1) K&W 6J23147-complete • Phase 2 road alignment-over y drawing P r y Metro sewer line fill's' s c� • Storm water collection facilities (pbeses I&2) o • Welland Mitigation Shaphol 6/23197-complete z K&W d� —_ x m tti t1 _ W . CD e I 0 ri U n m PERMITS/SEPA Requirements Drawings who Critical DatesiStatus Comments w Mitigation Document Outline of Mitigation items to be Renton! 7131197-Complete con=xted/perfortnod K&W httigation Document n Corps Section 404 • JARPA Application: K&W/ 7111J97-Dry Application JARPA Application same as (iIS Army Corps of 1 • Section A: Shapiro to Corps HPA and Section 401 Engineers) • Applicant information 7/18197-Final Application Certification,except Corps l� ) • Project Location&Description to Corps Permit also requires Section B LOUof other approvals,etc. of JARPA Application • Secti B: • Project Costs • Local Government Info. • Adjoining property owners • Section C: • Signature Block • Vicinity Map K&W 71M-Connplete Drait _ 0 north arrow 41 Vicinity MAP Q0 name of waterbody 7116197-Complete Final _ • location of proposed activity Q • latitude&longitude Cc!0 • directions to site W • Plan View yW 718197-Complete Draft • north arrow Plan View • name of waterbody& 7/16/97-Complete Final direction of flow • ordinary high water line,and wetland boundaries • dimensions of activity and impCMOM surfaces, distance from property lines, distance it Caen&into waterbody beyond the on s ordinary high wsicr line,and N weWuO boundaries_ v • existing adjacent strucsaues m • adjoirdag pn'opesty N ownmhT • type/amount of fill,&arts m to be filled m • type/amount of dR*ed mate ial,area dredged, method,&location of r` disposal m °r' • types and locations of CD aquatic,wetd 1 ,and N LD m 2 m PERMITS/SEPA RepimMents Drawings who Critic al Dates/Stattts Cornme>ats w riparian vegetation • erosion control measures CL 2 utilities(water,sanitary sewer,power and stormwater conveyance systems) • stormwater discharge points • Cross Sectional View K&W 71V/ ?-Complete Draft • ordinary high water line and �' Cross Sectional View wetland boundaries 7/16197-Complete Final • water depth • dimensions&.distance into waterbody beycrW cxdinary w high water line and wetland i5 boundaries _ • dredge and/or fill grades cI • existing do proposed d contours&elevations o • types&location of aquatic, wetland,and ripaoan ra vegetation present at site • type&location of material used in construction& method of construction • Altemative Analysis(FEIS) Alternative anal}sis required for fill in wetlands or waters of US. • Noaf7ARPA Coops Requirements Shapiza 7/8/97-Co plete oiler • CotpB Confimati in of Wetland y COTS Teclull-nents Satandaties • Agreement to oomplete ooafirnoation Dine • Wetlands that require confirmation: &27/97-Completc wdland CO almig Sprinngbraok Creek,wetlands confinnatioms 04 west of AllpKk,and Phase E wetlands. All wetlands have been cMv previousty delineated. • Phase Q wetlands need to be flagged lie for Ca review. m ps• Wetland Functions and Values 711J9']CArnplete WL 6� Assert Fimdioms&Values `4 . Cotrrplcte functiow and values i asxssmt for all wetlands that will °', be filled. -' • Assess impacts. m C, iD 3 v m PERMITS/SEPA Regniremeats who Critiraf Dalft/Stattr! (_ommests W • Complete functions and values a assessment for wetland mitigation hank pre-and post-mitigation requirements. • Comdinate with City of Rcnton on Shapira! 714/9,-Carnpletc wetland and bLffer mitigation K&44 i coordination requirements. Renton • Conceptual Mitigation Design Shapiro 716,97-Complete • Need wetland bank information from Conceptual Mitigaticm City of Renton: topography, Design groundwater levels,drainage Renton U27/97-Need info.from patterns,hydrologic connections,soil Renton types,and any preliminary plans. w� • Review availahle data. Shapiro • Revise preliminary wetland bank Shapiro Q plans to GI the specific mitigation needs of Oakesdale pTgmt. Q • Meet with resource and regulatory Shapiro/ 7,17197-agency agreement o agencies to get agreement on design K&W prior to submittal. Renton • Revise nutiSimon plan accor Shapiro 7/9197-revise mitigation �Y• plan Constriction Drawings(5M;,,75%, Shapira/ 718J97- 11/24/97 10()%) K&W SbonAw Subdan ial Complete Application- K&W 8/l/97-Subrnit complete City has electod not to use Devdapowd(City p( application JARPA Form for Shoreline Rentm) • Master Application Form K&W 725/97-Corplete form Permit- * List of Current Property owners srrtrmmdmg K&W 7fl5/97-Obtain frmtt Property Renton Asscssors Office • Project Narrative K&W 7/25/97-Complete natralivc aN, • currant use of site dt eadsting 0D improvements • name of edja,Cent water and VRdands v D' • nature of existing shoreline • proposed red impmvements R use conshuction costs and dates • Neighbexhood Detail Map K&W 7116/97-Complete • scale of 1"=200' Neighbmtood Detail Map N • )of lines,land uses,building K&W/ 7J9197-Obtain info.5om otifl am Renton Renton r— • propaties&zoning w/in 25W R of project m CIA © 4 u� m PERMITS/SEPA Regairemews Drawings Who Critical DatewStatus Comments LLJ • Site Plan v K&RR' 7/16/97-Complete Site Plan Site plan at 1"=20'if site is one date,north arrow,scale(1"-- acre or less. CL 40') • dimensioned property lines • c-xisting land&water contours S'intervals • ordinary high water mark • names of nearbv streets Renton 7/9/97-Obtain existing • existing driveways Renton info.f um Renton • existing public improvctnents (subs gutters,sidewalks,street trees,fire hydrants,utility w poles,etc.) • existing&proposed structures K&'A,/ z (parking;driveways,trees, Renton a fencing,retaining walls,signs, = eascmcnts,lighting fixtures, utility junrtioc boxes,etc.) M • Prod od spaces. w hurdvwpcd mws • utility plan(srwcr,water, hydrants,drainage,and storrnuxter run-om • topographic.features(streams, lakes,Mashes) • Cnadiag Plan K&W 7122/97-Complete Cnadmg Gradmg plan required if grades • type of material,toms and cu. + Plan an sde exceed 20%or amount yds. for fill and extraction of earth distmbod cxoaeda 500 • disposal site for extractions ctt yds cv • Drainage Report • Drainage Plan K&W 7/22W-Complete Cn o • slumped by licensed mginott' • stamped by licensed engineer + Drainage Report and v • comply w/Rentan Mumeipal Code • comply w/Rcnton Municipal Dninage Plan U) (Section 4-22)&1990 King Crnouny Code(Section 4-22)& 1990 kD m Surface Water Managemciat Design King County Surface Water c' Mamral Management Design Manual • l.=As aping Plan T 7/22/%-Complete m • scale same as site plan `j' Iar>d-Wag Plan m • date,scale;north arrow • existing and proposed contours S'intervals • nearby streets&public Cn r, improvements CD boil areas,access cv LD S _ CD PERMUSJSEPA Requirements Drawings Who Critical Dates/Status CmMments • location&size of Planting areaS • proposed penning,locatirnis,& height • location,size&spacing of existing&.Invposed drubs, trees,ground covets,etc. • a:unes of existing&proposed vegetation • planting details Colored Display Maps of K&MW Complete prior to Neightwrhood Detail Map,Site Plau, presentation w/ and Landscaping Plan for presentation Environmental Review purposes Corttatittee and Hearing = Examiner HPA(WDIt'W) DARPA Application: K&w g/19/97-9utm it complete Only Sections A and C of _ • Bridge Crossing • Section A: 'j' Application JARPA Application required. < • Applicant information 0 • Project LDcatian&Description Same application and drawings Q List of other approvals,etc. as 401 Certification. • Section C: • Signature Block • Vicinity Map • north arrow IOW 8/13/97 Comupiete Vicinity • y name of waterbody Map • location of proposed activity • latitu le&longitude • directions to site • Plain view K&W &15197.Complete Plw • north arrow 41 view • name of waterbody& O cl' directiona of flow v • ordaukry high water line,and �m vvetland boundaries CA • dimensions of activity and impervious swfaces, m distance firm property]roes, distance it extends into waterbody be)md the ordinary high water line,and o, wetland boundaries. °' • existing adjacent Anictuars ti m • adlouring property LD m 6 PERMITSISEPA Requiretttcab Drawings Who Critical Dates/Stulns Coartmeuts w ownership 2 • t}pdamount of fill,&area to be filled • typeJainount of dredged material,area dredged, method,&location of disposal • types and location of aquatic,wetland,and riparian vegetation • erosion control measures • utilities(water,sanitary sewer,power and sfcqmwater cortve'Wice � systems} • sformwater discharge points • Cross Sectional View `r • ordinary high water line and K&W W15/97-Complete Cross %xtland boundaries Sectional View * water depth • dirnensioms&distance into waterbody beyond ordinary high water line and wetland boundaries • dredge andlor fill grades • existing&proposers contours&elevations • types&location of aquatic, welland,and riparian vegetation ptmcnt at site ro ial • type&location of mater CA used in cansbucbon& in method of coustu Rion i, 401 Certlf eatiae& Same as HPA JARPA Application Sane drawings as HPA JARPA K&W M9/97-Submut Same application and do wings CCA Temporary WQ Application AmUcaban as HPA_ Mo�it:uion m m N NPDES for Stormwater Pollution Prevent Hw Ylan(SWPPP) K&W 9119/97-Complete SWPFP Required for oonsntrctic n Cutsbmetioe Aefivft7 text: activities that disturb 5 acros or ' Project dmcsipfion man. Mud=a Notice of • Existing site conditions m • Intent(NO[),public notice, Adjacent areas certification and preparbtiou.of m • Soils SVAW A notice of N LO C' 7 01) PERNUT"EPA Requiretntn" Drawings who Critical Dates/Status Comments Ljj • Critical areas Termination(NOI7 must.be Q • Erosion and scdimcat control BWs filed following completion of 2 • Permanent stabiliution oonstrucbm activity. • Stormwater management considerations • Inspection and maintenance • calculations(for design of sto mwatcr controls) • Nan-ESC BMPs Site Plan NW(for SWPPP): K&W 913197-Complete Site Plan • Vicinity trap(corner of site plan Map • Existing contours • Existing vegetation(tree lines, grassy areas,etc.) • Soils • North armw • Critical erosion areas • Fxisting drauWc patterns • Final wntows 0 • Limits of clearing and grading 00 Lli • Cut and fill slopes • Locations and details of cenvevsace xystems • location of BMPs • Locations and details of sediment oornro)f xilitim • Location of=a-FSC BMPs(i.e. equonbmt waAdown 8T CaS,etc.) CV CJ� N bD CV CD tD cv m CV r~ cm J, m CA LO CO 9 � '97 4 � h �n �/13I9� (10�4� /Yvvllo�l ( hAccf w fi yb fw� ngd5 4.- CoA5� AJj� ,.t-, �'1vfJ {/a�. �r Z �-� Gv- ,d ter- " jig �+ , kl,)fir 1,rt 4A)l /} 4".mod-s }� , o%eck a,,, i 1)1 Tw/ �?1&A k.5 R-1 if �' �- - 2� 2j���'l3 CITY OF RENTON PLANNING/BUILDING/PUBLIC WORKS MEMORANDUM DATE: June 13, 1997 TO: File FROM: Lin Wilson, Scott Woodbury, Mark Pywell Bryce Ecklein (Kato & Warren) SUBJECT: Oakesdale Avenue Project Site visit with USACE representatives, 6/12/97 611 � On the morning of Thursday, June 12, 1997, we met wiyg, dy and G 1 Terzi of the U.S. Army Corps of Engineers on the Oakesdale AvenuFord att ded on Boeings behalf; the City was represented by Lin Wilson, Joe Ar Woo ury and Mark Pywell and by Bryce Ecklein of Kato & Warren. Chriscott . . . of Shapiro, who been involved in the delineation of wetlands throughout the Boeing property, as well as the City's project, were also present. The purpose of the visit was to examine the proposed revisions to the alignment in the DEIS, in the areas of the CSTC wetland, and south of SW 27th Street. Stakes had been placed to show centerline and construction limits, and wetland boundaries had been delineated. The was also to resolve previously-raised questions regarding the extent of wetlands "E" and "F". Wetland "E": Chris�escribed the history of past land uses and delineation of this small wetland. It is located between two former parking lots in the former stables area of Lon- gacres racetrack. Chris and Gail examined augured soil samples and dug a pit to refusal. They agreed that the area constituted a "closed depressign" Wetland "F": The party examined wetland "F" along the left bank of Springbrook Creek. The conclusion was that ground below elevation 10 should be considered as wetland. G�s the-hydroiogy,--woukl-eventu- d ('5 l 1, 5 •wtu J$ Alignment A-2: Bryce described fl a rationale for relocating the proposed road alignment so as to minimize impacts upon the channel and delta wetlands. He also referred to the possibility of converting a portion of the adjoining upland to wetland, but cautioned that Boeing had concerns that such a change could perhaps lead to reopening the conditions for maintaining the mitigation wetland. The alternative would be to construct mitigation wetlands at a designated site further south on the project (visited later). Gail acknowledged that the original CSTC created wetland Memo to File June 13, 1997 constituted an "over-mitigation" of CSTC impacts, but that the rules under which the earlier permit was granted did not allow advantage to be taken of this situation. Project Configuration south of SW 27th Street: The party walked the existing two-lane road constructed above the Metro 108-inch sewer line. The proposed construction will consist of a four-lane roadway with bicycle lanes (54 feet wide curb-to-curb) and 8-foot sidewalks on both sides. All of the widening will be to the east; there will be no construction affecting the South Marsh to the west. Box culverts to provide a hydraulic link between the wetlands east and west of the road are proposed. The eastside fill will be retained, as in the case of the bridge ap- proach fills in the CSTC area, using MSE (mechanically stabilized earth) walls, probably with a steel wire mesh facing, allowing vegetation to establish. Proposed Mitigation Area between SW 23rd and SW 27th Streets: The existing upland area owned by the City (originally acquired for construction of the P-1 Channel) east of the proposed roadway was examined. The process for establishing this as a Federally-recognized wetland was discussed, and it was recommended that, due to the complexity and length of the process., it would better to keep mitigation in this area project specific. However, the City could con- sider constructing advance mitigation at this site for Phase 2 of the project, which would be covered by the Section 404 permit. If the mitigation wetland is established in advance of con- struction causing impact on existing wetlands, it may qualify for consideration at a lower re- placement ratio. The City agreed to consider this. Gail indicated that she would prepare a confirmation letter, covering the conclusions reached. cc: Rick Ford(Boeing) Bryce Ecklein(Kato&Warren) Chris Knight(Shapiro) Bob Mahn Joe Armstrong Scott Woodbury Mark Pywell D � Q � � CITY OF RENTON TELEPHONE/CONTACT RECORD Contacted: Jack Kennedy Date of 6/1 1/97 Contact: Telephone No.: 764-6907 Time: 10:30 am City of Renton Scott Woodbury File No.: Oakesdale Extension Project Contact: SUBJECT: Wetland Confirmation/404 Location: Phone permitting Items Discussed. I asked Jack if the Corps would like the Springbrook Creek channel widening project and the Oakesdale Extension project as single JARPA. He said no, as he feels it is important to keep the projects separate so that one project does not delay the other. He suggested that the Oakesdale JARPA maybe only need to show the planned widening as dotted lines on the permit drawings, noting that the channel widening is a separate, pending project. I also asked Jack about separating phase 1 and 2 of the Oakesdale project if after the comment period for the 404 permit there are significant concerns raised about the phase 2 portion. He said separating the phases would not be possible at that point. Jack had to go before I could confirm for myself whether phase 2 really had to be combined with phase 1 . He did comment that he thought the two phases for the JARPA should be combined so as to not piecemeal the project permitting. Jack also clarified at my request that the purpose of their site visit (now scheduled for 6/12) would also be to confirm wetland boundaries, but he is not planning on a detailed confirmation effort. Recommended Follow-up: Attend Corps field confirmation visit. cc: Lin Wilson 06/1 1/97 4r 3 `�' (A ' �� m ` 'W1 o/'JVk V�r 6uiO4, 10- 01a I f 1 c ao�61A)"'h Conference call with Scott Luchessa of Shapiro, Mark M and Jon I of JSA. Field mapping 4/3/97. Plant , community homogeneous, only one plot deemed necessary. Plot taken down on the low terrace at toe f ' steep bank, approximately 3.5 feet above the water at the time. Corresponding upland plot at the top ofo the bank. Hydrology for wetland on terrace is shallow horizontal flow between B and C horizons. Wetland extending from 50 feet north of storm control vault to the south. Hydrology above the terrace based on change in soil textures that water perches on. Ao e ms-'651/ l G �'"G Cam" � �,,�� � •� . 00, /- ,W �v Z �ttn �// w� �wd Glgn,rn,s r fV ly h7 �'�/s + �y T�' � �� � �r �� G„fi Coy,4-wZ�c,�t' ScP�c I''►�,,r �,�5/a.tc �.-.� b 7�1 ERROR:undefined OFFENDING COMMAND: STACK: d THE CITY OF RENTON DEPARTMENT OF PLANNING/B I DING/P B t WORKS - FOURTH FLOOR = 200 MILL AVENUE SOUTH RENTON, WASHINGTON 98055-2189 _= FAX: 235-2541 === To: 411,14,11( Company: Phone: Fax: From: Company: Phone: Fax: Date: L-4/ -7 Pages including this cover page- • 2 6 Comments: f f' f l a , v �i II 1p lip .rf n \/J�'` ■`■0. ,y` Ili - 4 .�..�� � fir"■ .� �� t v 1 M ■��/\.� •.9 ���° .,� �.,4 "�� ■•,� �� ��tr+ � � ��`, .wpm.~��.,,,, ` ti��5 �o �a ti t' 4 manes 01 31 41 ot AN 1>x qIr di Ck 31 co N�i \31 '31 or%% 4-8 R 1 a 1 MAW IL" i^ I i i 1 I - • O i UPL Q - � � l ♦ 2 r� ♦ ♦ WETLAND s�►E � L-1 UPL •L Sheet1 chart 1 Springbrook at 27th south side r f 12 TI r� 10 � x n , r ,. 8 ". � r r x? �y .t Sedesl M a k 4 a3 r 2 �z a Vy EMT .� 1/27/97 1/30/97 2/1/97 2/3/97 2/5/97 2/7/97 2/9/97 2/12/97 2/14/97 2/16/97 2/18/97 2/20/97 2/23/97 2/25/97 2/27/97 3/1/97 3/3/97 3/5/97 3/8/97 3/10/97 21:30 1:45 6:00 10:15 14:30 18:45 23:00 3:15 7:30 11:45 16:00 20:15 0:30 4:45 9:00 13:15 17:30 21:45 2:00 6:15 feet south t.dat r Jurisdictional Wetland Determination for Customer Services Training Center Project Prepared for Ms.Lori Pitzer Boeing Commercial Airplane Group P.O. Box 3707, 6Y-50 Seattle,WA 98124-2207 Prepared by Christopher W.Wright Scott Rozenbaum Marc Boul6 SHAPIRO AND ASSOCIATES,INC. 506 Second Avenue 1400 Smith Tower Seattle,WA 98104 April 1992 000 0 0 o �❑ � p p 1� E EU Fj S �--� -- ------------ `a ` --------------- Q ___-PARKING_____ i - --- - - -------- --- - •19 12 I ORAINA O 2 •13 ❑ a o •16 14 •3 *28 _ _-_ *31 018 8 c) r:; FIGURE 2 a •17 SAMPLE PLOT 019 Sample Plot Location(Approximate) LOCATION MAP 0 150 300 Ft SITE BOUNDARY CSTC U.S. ARMY CORPS OF ENGINEERS a SHAPIR0& WETLAND DELINEATION METHOD (1987) ASS( ATES2 V92 oo� 0 o Ur LU S ----------------- >� El ----------------- PARKING i ----- ----------------�i 9 ------ 1--- - o ' 1 Ur I I ❑ Py Ur 7.1 -------- 10 III1 'I 1'I I � j1 11 I E i l 1:1 1 1 II Z FIGURE 3 z Ur Urban Land SOILS MAP Py Puyallup Fine Sandy Loam 0 150 300 Ft SITE BOUNDARY LONGACRES PARK CSTC U.S. ARMY CORPS OF ENGINEERS SHAPIRO& WETLAND DELINEATION METHOD (1987) ASS(MATESZ i/91 WETLAND DETERMINATION INTERMEDIATE-LEVEL ONSITE DETERMINATION METHOD VEGETATION UNIT SAMPLING PROCEDURE Project/Site: � �Cb Vep. Unit /51 Field Investigator(s): Date: Indicator % Areal Cover Midpoint' of Cover Herb & Bryophyte Species Status Cover Class Class Rank Giesrurt At2vEv_,5E rA-_J 2 AGnoST�S 5 FAG 8 S 9 .o Z 3 F-HCv S 1 T,o 4 y 5 6 7 8 Sum of Midpoints Tot Dominance Threshold Number Equals 50% x Sum of Midpoints lot Shrub Species 1 2 3 4 5 6 Sum of Midpoints Dominance Threshold Number Equals 50% x Sum of Midpoints Sapfina Species — 2 3 4 5 Sum of Midpoints Dominance Threshold Number Equals 50% x Sum of Midpoints Tree Species f% Cover) 1 2 3 4 Sum of Midpoints Dominance Threshold Number Equals 50% x Sum of-Midpoints + Percent of dominant species that are OBL, FACW and/or FAC �Z �O Hydrophytic vegetation? NO Comments: Cover classes (midpoints): T<1% (none); 1 = 1-5% (3.0); 2 = 6-15% (10.5); 3 = 16-25% (20.5); 4 = 26-50% (38.0); 5 = 51-75% (63.0); 6 = 76-95% (85.5); 7 = 96-100% (98.0). To determine the dominants, first rank the species by their midpoints. Then cumulatively sum the midpoints of the midpoints of the ranked species until 50% of the total for all species midpoints is immediately exceeded. All species contributing to that cumulative total (the dominance threshold number) plus any additional species having 20% of the total midpoint value should be considered dominants and marked with an asterisk. Plant species does not appear on the National List (Reed, 19880. Indicator status assigned based on field observations and habitat information from the literature. WETLAND DETERMINATION INTERMEDIATE-LEVEL ONSITE DETERMINATION METHOD VEGETATION UNIT SAMPLING PROCEDURE Project/Site: ;Acmes Vag. Unit *: Iy Field Investigator(a): CK/- Date: IJ-4'�7/ SOILS Series/ phase: Subgroup Is the soil on the hydric soils list? Yes_ No_ Undetermined Is the soil a Histosol? Yes_ No_✓ Histic epipedon present? Yes_ No f Is the sod Mottled? Yes ✓ No— Gleyed? Yes_ No Horizon Sample Soto Type/ Matrix Mottle Gley Organic Hori on Depth Deoth Texture Color Color Color Content fl f 0-4" C.pAN, It A2 4-ir'' L7 Z A" at2 �O-✓ SrC'r 70r2S'L 7,5127� GocJ Comments: 'y"iric;Soils? Basis GocJ 01/Zn�A , My 7ct'�) HYDROLOGY Is the ground surface inundated? Yes_ No X Surface water depth: Is the soil saturated? Yes_ No Depth to the free-standing water in pit/soil probe hole: Mark other field indicators of surface inundation of soil saturation below: Oxidized root zones Water-stained leaves Water marks Surface scoured areas Drift lir" Wetland drainage patterns Water-bome sediment deposits Morphological plant adaptations Additional hydrologic indicators: Comments: Wetland Hydrology? NO Bass Of SUMMARY Do normal environmental conditions exist at the plant community? Yes No Has the vegetation, soils, and/or hydrology been significantly disturbed? Yes_ No x NJl P_a6rj `c' Disturbed Area? NO Bash +�rS"r�'t C��.�, No_ (egg DrS77vQ,'9J J(j Problem Area? Basis Comments: Is the hydrophytic vegetation criterion met? Yes_ No x Is the hydric soil criterion met? Yes x No_ Is the wetland hydrology criterion met? Yes_ No Y Is the veoetation unit or plot wetland? Yes_ Nod[ Rationale for jurisdictional decision: WETLAND DETERMINATION INTERMEDIATE-LEVEL ONSITE DETERMINATION METHOD VEGETATION UNIT SAMPLING PROCEDURE ProjeetrSlte: L.on3& Ac•QES r Field Invaatlgatlon(a): T'r-, Cu)rt 5R Veg, Unll f: �J Date: Indicator % Areal Cover Midpoint' of Cover Herb E Brvophyt• Snwcler S1r I v_e cove, ee Cla« qer� t __ph0.luc�s aTund.�na n-es� FAC�.J 85 (�v g5, � ak` 2 FAr ._ 2- 3 e, ;s F 5 A 4 5 7 8 g _ 10 Sum of Midpoints Dominance Threshold Number Equals 50%x Sum of Midpoints Shrub S2tclea 1 2 4 S - Sum of Midpoints Dominance Threshold Number Equals SO%x Sum of Midpoints Senline end Small Tree Specieg 2 3 . 4 5 - Sum of Midpoints Dominance Threshold Number Equals 50%x Sum of Midpoints Tree Species rK Coverl 1 2 3 4 5 Sum of Midpoints Dominance Threshold Number Equals 5C/x Sum of Midpoins Percent of dominant species that are OBL, FACW and/or FAC Hydrophytic vegetation? NE5 Comments: Cover classes (midpoints): T<1% (none): 1 - 1.5% (3.0). 2 - 6-15% (10.5): 3 16-25% (20.5): 4 - 26.50% (36.0): 5 - 51.75% (63.0): 6 - 76-95% (85.5): 7 - 96•i 00% (96.0). To determine the dominants• firs; rank the species by their midpoints. Then cuma!a:ively sum the midpoints o! ine midpoints of the ranked species until 50°b of the total for all species midpoins is innediately exceeced. All soeaes contributinc to that cumulative Iola! (the dominance threshold number) plus 2ny addjtional s;,ecies havinc_ 2 of the total midpoint value shoulc ue consioered dominants and marked with 2n asiersk. Plant species does not eppear on the National Ust(.need. 1988). Indicator status ass-pried basec on field .observations and habitat inform2tion from Lne literature. WETLAND DETERMINATION INTERMEDIATE-LEVEL ONSITE DETERMINATION METHOD VEGETATION UNIT SAMPLING PROCEDURE Project/Site: LC>0 Veg. Unit 9: 1S Investigator(s): Ctc)t•r {Z+� Date: /I - IQ- / SOILS SCS Mapping Unit: Field Identification: Subgroup:" Is the soil on the hydric soils list? Yes_ No_ Histic spipedon Is the soil a Histosol? Yes_ No present? Yes_ No Y Is the soil Mottled? Yes Y, No_ Gleyed? Yes_ NoZ Horizon Soil Matrix Mottle Occurranoe Gley Organic Horizon Depth Texture Color Color c' Mottles Colon A _ 1 o4M o� LE21—& M ED 6 2- l H-19' si I 1oY�5/z. -7_ S Yk`t& C Zd L.a Landform/Topography: _ F - (u;n� Comments: V .i Hydric Soils? YF 5 Basis _ 1�cD �htbrtiQ 4 Mo`{�4-1 e5 HYDROLOGY Is the ground surface inundated? Yes_ No-2<' Surface water depth: Is the soil saturated? Yes _ No_Z Depth to saturation: Depth to the tree-standing-water in pit'soil probe hole: Mark other field indicators of surface inundation of soil saturation below: _ Oxidized root zones Water-stained leaves Water marks Surface scoured areas Drift lines Wetland drainage patterns Water-borne sediment deposits Morphological plant adaptations Comments: Wet:and Hydroiocy? Y66 Basis SUMMARY Do normal environments' conditions exist a; the Plant community? Yes _ No Has the vecetation, soils, andior hydrolocy been signifioan;ly disturbed? Yes _ No_ Disturbed Area? ?zsis Prcbiem Area? P,asis Comments: !S ;he hvdroPhyt c vEoE;a;;on :Enpn ME!'? Yes 'f, No_ is the hyVic soil crterion met? Yes} No_ Is the wetland hydrology criterion met? Yes No_ Is :ne vece:a;ion uni: or Pilo; wetland? Yes }C No_ Rationaie for jurisdiotional oecision: Sheet1 Ghart 1 north side SW 27th st 12 Mr' 10 8 6 Seriesl 4 2 0 3/24/97 3/27/97 3/29/97 3/31/97 4/2/97 4/4/97 4/6/97 4/8/97 4/10/97 4/13/97 4/15/97 4/17/97 4/19/97 4/21/97 4/23/97 4/25/97 4/27/97 4/30/97 5/2/97 5/4/97 22:15 1:15 4:15 715 10:15 13:15 16:15 19:15 22:15 1:15 4:15 7:15 10:15 13:15 16:15 19:15 22:15 1:15 4:15 7:15 Page 1 50 s a 11 -- t W-13N0 III\ x+iWC—O Nb ri-13Nc + CSG 3 W-13st': 9n w k w --- w 35e W-•35 _ ` �,7 — l . Cc 4 1 T _ BWC-5x _ w:+ i+ CSG 2 � � • ...__ 7H 3 N I Q5 BWC-2 — -��. CSG 8- I. • W- 4a4=�-CSG 6 CSG 7 _ �.,;_• Z,,:�; xBWC _. - -• f I _ €7 617 ... J . ,- -----,:_ + CSG .._.. 1_ �..� aro. c: 5ounacry i 7T _ .I ( SG I Crest Stake Gage -33n i ............. . �- y3C IINVU-I Groundwater - _— � W=�Bt � • _ Monitoring well "— '..—.—._ '+' CSG J W 4 S----- St .....� t wI _ _. 77 • 1 . Figure 13 - 1. Crest Stage Gage and Groundwater Elevation NIonitoring Locations Within the City of Renton East Side Green River Watershed Project Area j lb 5ti Ground Water Levels ikut 18 16 --------- — ---- - --- ---------- --- ----- ---- --- 14 ------------ - ------._ — - ------._..-- —---------= ------------- --- 12 -- -- ---- --- -- --�- --- —-- ■Grd. Elev ®3-21-95 c 10 - -- ----- -- — ----- --- ■9-22-95 Z ❑1-5-96 ■4-5-96 w ®7-15-96 .6 --- - - -- - --- -- ■10-7-96 4 - - - -- -- 2 - - - - --- 0 + + r c� Ln r o0 U U U U U Gage No. l J I = lob f Ell 29 /1/(7I/G �. X }. 6.219 '} IN OV i��'••�. F � �� � � � ---�-••-..._..Via....---�,,,,, -,,. .•✓ •---^""� •,�; 'J�� i ! nth `."""•-•-�-^--.-� .. h: vim'. �,r � F t f / .."""'--...._-....__•_.,.--/ x x ----------- leg* 5.72 5.7 3 X x 166 5. 5.82 x x 5.8 7 5 4 '159 5,13 ?If 15 x .......... x .................. N5 219 X 6.10 X x x 4 3 590 x 6.52 5.74 X- v L� �1tiVlQPr,1 � P D f �+r�:^Yr LANNINi � �N?ON 5 metrix, Inc. JAN 2 suRan!s in Erc;neerrc_i cr:v-rcnmenral S4 ake Washington Blvd_N.E. Kirkland.WA 98033-7350 22-8880•Fax:206-889-8808 ������ED January 19, 1996 Renee Naness 55-2942-01 (01) m: Kirk Lakey, Wetland Ecologist Jim Kelley, Ph.D., Senior Wetland Ecologist Ie A4�s Delineation of wetlands on the Group Health Cooperative Distribution Center, Renton site. memorandum describes a wetland reconnaissance and delineation completed by Parametrix, c. to describe and delineate wetlands, streams, and required buffers on the 22.5=acre Group ealth Cooperative (GHC) Distribution Center at 801 S.W. 16th Street within the City limits f Renton, Washington. -The study delineated three wetland areas that have developed on fill terial. The wetland areas on-site total about 0.44 acre (19,267 ft). Two small streams are also present along the south and west boundaries of the site. Wetlands on the site may not be regulated by Section 404 of the Clean Water Act (Administered by the Army Corps of Engineers) because they have developed on fill. Two wetlands are exempt from the City of Renton wetland,management standards due to their small size (<5,000 fo while one wetland (16,718 ft) is a Category 3 wetland METHODS On August 24, 1995, Parametrix staff conducted a wetland reconnaissance to identify and delineate wetlands and the ordinary high water mark (OHWM) of Spring Brook and Rolling Hills creeks. Wetlands were evaluated and delineated by Parametrix staff using the methodology outlined in the Wetland Delineation Manual (Environmental Laboratory 1987). The City of Renton, the Corps of Engineers, and Washington's Department of Ecology all require use of this manual and delineations were completed using the "routine" methodology, as identified in the 1987 Manual. Field data, including information on vegetation, soils, and hydrology, were collected and recorded on data sheets to document the characteristics of the project area (Appendix A). Wetland plants of the State of Washington (Reed 1988), as amended by the U.S. Army Corps of Engineers, Seattle District (Reed 1993) provided information on the indicator status of vegetation in the project area (Table 1). Scientific and common plant names used in this letter report are consistent with Hitchcock and Cronquist(1981) (Appendix B). Wetland communities identified and delineated within the project corridor were classified using the U.S. Fish and Wildlife Service Classification of Wetlands and Deepwater abitats of the United States (Cowardin et al. 1979). ME' NewFile per - File Name: V_X-H T2 S Copies To: -� Soils adjacent to Wetland C are composed of fill. The upland soils present in this area are fill soils. They are a brown (lOYR 4/3) sandy loam. Because of the high chroma and the lack of mottles, this soil does not meet the technical criteria established for hydric soil. Spring Brook Creek Conditions Parametrix staff also identified and flagged the OHWM of Spring Brook Creek. Riparian vegetation within the OHWM of Spring Brook Creek includes areas with an overstory dominated by Alnus rubra (FAC) and Populus trichocarpa. The dominant shrub in these areas is Rubus discolor, other shrubs include Cornus stolonifera (FACW), and Spiraea douglasii (FACW). Herbaceous species in this riparian area are Phalaris arundinacea, Scirpus microcarpus (OBL), Typha latifolia (OBL), and Equisetum hyemale (FACW). Greater than 50 percent of the dominant vegetation within the OHWM and wetland fringe has an indicator status of FAC, FACW, and/or OBL (Appendix 1; Sample B-1);-therefore, this plant community meets the criteria for a hydrophytic plant community. Soils along the Spring Brook Creek are mapped in the Soil Survey King County Area Washington (Snyder et al. 1973) as the non-hydric Puyallup fine sandy loam (SCS 1991). The Puyallup series is made up of well-drained soils that formed in alluvium, adjacent to streams in the river valleys under grass, hardwoods, and conifers. Soils within the OHWM of Spring Brook Creek are fill and/or dredged material. They are a dark grayish brown (2.5 Y 4/2) to olive brown (2.5Y 4/3) sandy clay loam with dark yellowish brown (10YR 4/6) mottles. Because of this low chroma and the presence of mottles, this soil meets the technical criteria for hydric soil. The U.S. Fish and Wildlife Service (Cowardin et al. 1979) wetland classification system classifies Spring Brook Creek as a riverine, lower perennial, unconsolidated bottom (R2UB) wetland system. The wetland edge and OHWM of the creek were delineated: based on the presence of hydrophitic vegetation and hydrologic indicators. Adjacent Uplands The area above the OHWM of Spring Brook Creek has an overstory dominated by Populus trichocarpa, with Rubus discolor the dominant shrub. Herbaceous species include Phalaris arundinacea, Equisetum hyemale, and Tanacetum vulgare (UPL). Greater than 50 percent of the dominant vegetation above the OHWM and adjacent to Spring Brook Creek is adapted to wetlands; for this reason, the plant community meets the criteria for a hydrophytic plant community. Soils east of Spring Brook Creek are mapped as Urban land in the Soil Survey King County Area Washington (Snyder et al. 1973). Soils in the upland area are fill and either a brown Wetland Delineation - GHC Renton Site January 19, 1996 Commercial Real Estate (55-2947-01) 8 Parametrix, Inc. (lOYR 4/3) silty clay loam or an olive brown (2.5Y 4/3) sandy loam. Because of the high chroma in the matrix and the lack of mottles, these soils do not meet the technical criteria established for hydric soil. Rolling Hills Creek Conditions Rolling Hills Creek, a small stream that flows into Spring Brook Creek on the site, was examined. The creek is located just south of the property boundary in a ditch about 10 ft deep, and the OHWM was flagged. Vegetation within the OHWM includes Alnus rubra, Rubus discolor,and Phalaris arundinacea. Because greater than 50 percent of the dominant vegetation within the OHWM of Rolling Hills Creek is adapted to wetlands (Appendix 1; Sample A-1), this plant community meets the criteria for a hydrophytic plant community. Soils along the un-named stream are mapped in the Soil Survey King County Area Washington(Snyder et al. 1973), as the hydric Woodinville silt loam (SCS 1991); however, the soils appeared to be composed of dredge material from Rolling Hills Creek. Soils within the OHWM are a dark grayish brown (10YR 4/2) sandy clay loam with strong brown (7.5YR 4/6) mottles. Because of the low chroma in the matrix and the presence of mottles, this soil meets the technical criteria for hydric soil. Using the U.S. Fish and Wildlife Service (Cowardin et al. 1979) classification system, this un-named stream is a riverine, lower perennial, unconsolidated bottom (R2UB) wetland system. Adjacent Uplands The area above the OHWM of Rolling Hills Creek has an overstory dominated by Alnus rubra, with a shrub layer dominated by Rubus discolor and Cytisus scoparius (UPL). Herbaceous species consist of Phalaris arundinacea and Tanacetum vulgare (UPL). The dominant vegetation above the OHWM of Rolling Hills Creek (Appendix A; Sample A-2) is adapted to wetlands; this plant community, therefore, meets the criteria for a hydrophytic plant community. Soils north of the un-named stream are mapped in the Soil Survey King County Area Washington(Snyder et al. 1973) as the hydric Woodinville silt loam (SCS 1991). Soils were found to consist of fill and dredge material that was a dark grey (lOYR 4/1) silty clay loam with yellowish brown (10YR 5/6) mottles. Because of the low chroma in the matrix and the presence of mottles, these soils meet the technical criteria established for hydric soil. While the upland area adjacent to Rolling Hills Creek has a hydrophytic plant community and contains soils with hydric morphology, topography and field observations suggest Wetland Delineation - GHC Renton Site January 19, 1996 Commercial Real Estate (55-2947-01) 9 Paramerrix, Inc. WETLAND DETERMINATION Applicant Application Project Name: Commercial Real Estate Co. Number: Name: Renton Site State: WA County: King Legal Description:Township: 23N Range: 4E Date: 8/24/95 Plot No.: Sample B-1 Section: 24 Vegetation [List the three dominant species in each vegetation Iayer (5 if only 1 or 2 layers).] Indicate species with observed morphological or known physiological adaptations with an asterisk. Species Indicator Status dies Indicator Status Trees Herbs 1. Alnus rubra FAC 7. Phalaris arundinacea FACW 2. Populus trichocarpa FAC 8. Scirpus microcarpus OBL 3. 9. Typha latifolia OBL Saplings/Shrubs (Herbs continued) 4. Rubus discolor FACU 10.Equisetum hyemale FACW 5. 11. 6. 12. % of species that are OBL, FACW, and/or FAC: 85% Other Indicators: None Hydrophytic vegetation:Yes X No _ Basis: >50% FAC, FACW, and/or OBL Soil Series and phase: Urban land On hydric soils list? Yes No X Mottled:Yes X No . Mottle color: . 10YR 4/6 Matrix color: 2.5Y 4/3 Gleyed: Yes ; No X Other indicators: None Hydric soils: Yes X ; No ; Basis: Low chroma with mottles Hydrology Inundated: Yes No X Depth of standing water: 0 inches Saturated Soils: Yes ; No X . Depth to saturated soil: >20 inches Other indicators: topographic location indicates seasonal flooding is likely Wetland hydrology: Yes X ; No . Basis: hydric soil and topography Atypical situation: Yes ; No X Normal Circumstances? Yes X ; No Wetland Determination: Wetland X Nonwetland Comments: Riparian vegetation along the stream bank, sample area was within the flood area of the stream; stream was flagged B 1 through B32. Determined by: Kirk Lakey (Corps of Engineers Environmental Laboratory 1987) PLANNING/ BUILDING/ PUBLIC WORKS DEPARTMENT �Y MUNICIPAL BUILDING 200 MILL AVE. SO. RENTON, WASH. 98055 0 UTILITY SYSTEMS DIVISION - 235-2631 NT 0 TRANSPORTATION SYSTEMS DIVISION - 235-2620 TO: DATE: JOB NO. : RE: ATTN: GENTLEMEN: WE ARE SENDING YOU o ATTACHED ❑ UNDER SEPARATE COVER VIA THE FOLLOWING ITEMS: o SHOP DRAWINGS ❑ PRINTS ❑ REPRODUCIBLE PLANS ❑ SPECIFICATIONS o COPY OF LETTER o COPIES DATE NUMBER DESCRIPTION AND REMARKS THESE ARE TRANSMITTED AS CHECKED BELOW: o FOR APPROVAL ❑ APPROVED AS SUBMITTED o RESUBMIT COPIES FOR APPROVAL ❑ FOR YOUR USE ❑ APPROVED AS NOTED o SUBMIT COPIES FOR DISTRIBUTION ❑ AS REQUESTED ❑ RETURNED FOR CORRECTIONS o RETURN CORRECTED PRINTS ❑ FOR REVIEW AND COMMENT ❑ ❑ PRINTS RETURNED AFTER LOAN TO US COPIES TO: SIGNED TITLE IF ENCLOSURES ARE NOT AS NOTED, KINDLY NOTIFY US AT ONCE oi le) � ' r' r AWN J s ---- -- lkll'al r® , 7 A11 coorq ce�t3 Gxw-� U�1 err► f44 � J I 05/27/1997 12: 36 206-720-5600 KATO a WARREN INC. PAGE 01 KATo Post-It*Fax Note 7671 Date 1 paoges0' From WARREN ,4 2003 Wcrtern Avenue TuCa r i e.r�-9i �'C y -r c fCKC f ram/ 555 Market Place One Co./Dept. Co. INCORPORATED Seattle, Washington 9el2l Phone# Phone# � �j 2 O,� Fax# Fax# ? S6 D MLIVIW Tate: May 27, 1997 To: Permit Committee, Oakesdale Ave. SW Extension From: Bryce Ecklein, Kato &Warren Re: Meeting Notice We had tentatively scheduled a Permit Committee meeting for May 3CP at 10:00 a.m. pending outcome of the Corps of Engineers' pre-application meeting. The Corps meeting has now occurred and there is a need to follow up on direction that they have provided. Some specifics that have now been determined: 1. We will need to obtain an "individual" permit. 2. The Corps wants the permit to address the entire project (i.e., Phases 1 and 2). 3. The Corps will be looking at an expedited process of three to four months if we are able to provide required information in a timely manner. 4. Alignment A-2 (formerly K&W "B") is preferred; the Corps and other agency personnel want a field visit of the staked alignment.. The meeting will be at the Renton City Hall in the 5-'� floor conference room unless you hear from me otherwise. Thank.you. CACorreslbaememo4.doc 5/27/97 05/01/1997 15:12 206-728-5608 KATO & WARREN INC. PAGE 02 AGENDA Oakesdale Avenue SW Extension ,Agency Meeting 10:00 AM - 5th Floor Conference Room Renton City Hall May 2, 1997 I. Introduction - Jana Huerter - introduction of Participants and Their Roles - General Purpose of Meeting - Expectation of Reconvening in Future IX. Overview of Project and Anticipated Permits - Bryce Ecklein - Basic Purpose of Project Status of Design/Environmental Documentation Relationship to Other Area Projects - Review of Anticipated Permit Requirements III. Description of Contemplated Changes - Dick WarrerdRick Ford - Review of Value Engineering Process - Description of Changes Resulting from VE Review - Rough Quantification of Change - Boeing Perspective IV. Discussion of Permit Implications/Approach - Bryce Ecklein/Marc Boule - Wetlands - Water Quality - Shorelines - HPA - NPDES - SEPA V. Open Discussion VI. Closing - Jana Huerter - Recap of Decisions/Action Items - Determination of Future Meetings 6"k kk e, �tyepe 5/ ?#7 �o �rna /Oh /�1e, w Gie� h getk- Sderh ,- K4( ji, 4.qr 7� Coy, /ccd cv rY/ sy/(v W P�W . 41 654,glt 1 A:54?►G( d( 1-0 at V,) 0� GSdG ���', c�we Sr;,-�+�. �/�-en•��i n k� h'lo, Z 1�? m�,•�, AAM �e"7 /lob w�W Mt7 245-r a f7Its f j / 4, � P PLANNING/ BUILDING/ PUBLIC WORKS DEPARTMENT MUNICIPAL BUILDING 200 MILL AVE. SO. RENTON, WASH. 98055 v �s ♦ jam .11�UTILITY SYSTEMS DIVISION - 235-2631 NT TRANSPORTATION SYSTEMS DIVISION - 235-2620 TO: L Ul1 DATE: JOB NO. : 60e/ RE: PC). 40 370 1�1 5" o -3o ATTN: �c�/tl-Z. LAj/\ � )Z GENTLEMEN: WE ARE;SENDING YOU -< ATTACHED o UNDER SEPARATE COVER VIA THE FOLLOWING ITEMS: o SHOP DRAWINGS ❑ PRINTS o REPRODUCIBLE PLANS o SPECIFICATIONS o COPY OF LETTER ❑ COPIES DATE NUMBER DESCRIPTION AND REMARKS 54", c14t-t8 .r h mu Recce, z,qs-air- 0-1 THESE ARE TRANSMITTED AS CHECKED BELOW: ❑ FOR APPROVAL ❑ APPROVED AS SUBMITTED o RESUBMIT COPIES FOR APPROVAL FOR YOUR USE ❑ APPROVED AS NOTED ❑ SUBMIT COPIES FOR DISTRIBUTION AS REQUESTED ❑ RETURNED FOR CORRECTIONS ❑ RETURN CORRECTED PRINTS ❑ FOR REVIEW AND COMMENT o ❑ PRINTS RETURNED AFTER LOAN TO US COPIES T0: SIGNED TITLE IF ENCLOSURES ARE NOT AS NOTED, KINDLY NOTIFY US AT ONCE 04/30/1997 17:04 206-728-5608 KATO & WARREN INC. PAGE 02 AGENDA (Draft) Oakesdale Avenue SW Extension. Agency Meeting May 2, 1997 I. Introduction - Jana Huerter - Introduction of Participants and Their Roles - General Purpose of Meeting - Expectation of Reconvening in Future II. Overview of Project and Anticipated Permits - Bryce Ecklein - Basic Purpose of Project - Status of Design/Environmental Documentation Relationship to Other Area Projects Review of Anticipated Permit Requirements JLI. Description of Contemplated Changes - Dick Warren - Review of Value Engineering Process - Description of Changes Resulting from VE Review - Rough Quantification of Change IV. Discussion of Permit Implications/Approach - Bryce Ecklein/Marc Boule - Wetlands - Water Quality - Shorelines - HPA - NPDES SEPA V. Open Discussion VZ. Closing - Jana Huerter - Recap of Decisions/Action Items - Determination of Future Meetings 01/23/1997 12: 47 206-720-5609 KATO & WARREN INC. PAGE 02 KATO& ue WARREN 555 K k"Pl""O 55S Marker Place One 'Tel: 206/448-4200 INCORPORATED Seattle. Washington 98121 Fax. 206/728-5608 MEMO To: File 'NX TRANSMITTAL MEMO * of P,vms � � From: Bryce Ecklein 7 �ck�l� FROM - ( COMPANY r Re: Oakesdale Avenue Extension Permit Commi tee P"oNe 4 FAX# Attendees: Marc Pywell — City of Renton(m) Scott Woodbury — City of Renton (m) Rick Ford —The Boeing Company (m) Dick Warren — Kato&Warren Bryce Ecklein — Kato&Warren (m) Marc Boul6 —Shapiro Associates (m) =committee member This was the first meeting of the Permit Committee with the primary intent being to(1)under- stand implications of the Value Engineering study recommendations relative to permitting and SEPA obligations, and(2)develop a strategy and assignments for upcoming agency meeting (May 2). Dick Warren provided the following update relative to design changes: 1. A proposed bioswale immediately south of SW 161h Street will be eliminated. Runoff from this portion of the roadway will be redirected north ta4he�wetvault en,�W 162'Street. 5',.f-4,,,. fiA'0'H k t /o7 f 6 !-Ak 2. Bodge will be shortened by replacing causeway approach with fill. This will increase wetland impact and will isolate a small portion of the Delta pond to the extent that it would be impacted. 110 ,h c vel1 * fpj 3. RunoffAfrom the bridge stricture will be directed to a pre-treatment vault in lieu of a w"If, bioswale/and discharge to Springbrook Creek. e nmcyr Gran c a/„/„'f -/; n or Lvlrpp.,J. 4. sed hift-to-the West g tj and would be enlarged/enhanced as mitigation for impacts to the De a pond. �,Nsed �'cc�cce. r..r�.t-lu.� �,,�.�s ��.e t.•�''1'�'^�s p"� rn�e,,.,c � � G wt d�r� r i� h�,,,y �•�n.,J� L y f �aJj � �,,r wl,�.e�1. % e ey,s rl creJ-Irtiy,Js �r4 CACorreslbaememo2.doc 4/23/97 ee,l/23/1997 12: 47 206-720-5603 KATO & WARREN INC. PAGE 03 Kato& Warren Inc Page 2 Discussion then shifted to permit obligations with the following observations: 1. DOE regional rules can be construed to require an individual permit(vs. nationwide) when filling a wetland created as part of an approved mitigation plan. This would be the case if substitute fill for bridge over the Delta. 2. DOE had Section 401, Water Quality Certification, permit control over the Delta. They may become involved in revisiting the Section 401. permit for the Delta if we discharge directly to it. I The project could be segmented into that section from SW 27'b Street to Boeing CSTC and that from Boeing CSTC to SW 16'b Street. This would allow the most urgently needed access segment(SW 27'-'Street to Boeing CSTC) to proceed under a nationwide permit and the connector link over Springbrook Creek to SW 16'Street to proceed under an individual permit. 4. Managing drainage from the intersection of SW 27'b Street and Oakesdale Avenue could prove problematic in that natural drainage flow would be to the south, outside the project area, and potentially involve discharge to an adjacent wetland. To bring the drainage north involves crossing an Olympic Company pipeline and fill section. Needs for upcoming meeting with agencies: 1. Develop graphic that shows proposed changes to project that have occurred since publication of DEIS. Probable assignment for Kato&Warren. This graphic and brief narrative would be sent ahead of time to attendees at agency meeting. 2. Develop options for handling runoff from intersection of SW 271�Street and Oakesdale Avenue. Probable assignment for Scott Woodbury and Dicck Warren. 111 3. Quantify approximate wetland impacts and size/ibias at south end of Phase 1 project. Probable assignment for Kato and Warren,/Shapiro Associates. .J.K4e '; Ali sc••� 4. Develop cross section of Springbrook Creek at Oakesdale Avenue to indicate how channel w ,,1i� project could be anticipated in Oakesdale grading plan. New topo information expected s�s 4P< from W&H Pacific. Probable assignment for Scott Woodbury/Brad Stein. /41 r f1 M �eS cwlt 3 5. Develop probable schedule for various permitfBIS scenarios for use by City and team in (-r4,s understanding implications of forthcoming agency direction. Probable assignment for Marc KQ Pywell and Bryce Ecklein. Meeting closed with understanding that coordination was necessary between Marc, Bryce and FEMA on meeting expectations and direction. cc: Mark Pywell Scott Woodbury Marc Boule CAComeslbaememo2.doc 4/23/97 04/23/1997 12:47 206-720-5600 KATO $ WARREN INC. PAGE 01 KATO& 2003 Western Avenue W!-1� 555 Market Place One NCORPORATED 200 FAX 728-5608 Seattle, WA 98121 (206) 448 4 (FAX) TRANSMITTAL FORM To: Scott Woodbury Date: 4/23/97 City of Renton Surface Water Utilities Pages: 3 Fax Number: 235-2541 Via: Mall ( ) FAX ( x ) From: Bryce Ecklein Fed Ex ( ) Contents: Draft memo. Please mark up and return with your changes/comments. Comments: Enclosures: cc: CITY OF RENTON PLANNING/BUILDING/PUBLIC WORKS MEMORANDUM DATE: April 29, 1997 TO: Scott Woodbury FROM: ?lark R. Pywell, AICP SUBJECT: Oakesdale Extension Project Issues Pertaining to the Boeing CSTC Wetland I have reviewed your memo to Bob Mahn with attachments. The only addition I think that needs to be included would be a note that although the Boeing created wetland was designed to accommodate the extension of Oaksdale, Boeing has stated that they did not include in their project any mitigation for the extension. In other words, the created wetland is narrow at the point where it was anticipated that Oaksdale would need to cross the created wetland but Boeing as part of the CSTC site did not attempt to identify the impacts that the construction of Oakesdale in this area (between 16th Street and the current terminus of Oakesdale south of SW 27th Street)would incur. Thank you for the opportunity to comment on the memo. If you have any further questions regarding this issue,please contact me at extension 5586. cc: HAW W60DO'nMEMO.DOTM CITY OF RENTON PLANNING/BUILDING/PUBLIC WORKS MEMORANDUM DATE: April 28, 1997 TO: Bob Mahn FROM: Scott Woodbury5l) SUBJECT: Oakesdale Extension Project Issues Pertaining to the Boeing CSTC Wetland Attached are the following City permits and decision documents for the Boeing CSTC project: 1. SEPA Determination of Non-Significance-Mitigation, Revised Mitigation Measures (Issued April 16, 1992). 2. Hearing Examiner's Report and Decision of June 29, 1992 (pages 1, 28, and 29 only) 3. City of Renton Committee of the Whole Committee Report Concerning Appeal of Site Plan Approval for the CSTC dated October 12, 1992. 4. Shoreline Substantial Development Permit Issued October 13, 1992. 5. Shoreline Substantial Development Permit Amendment#1 Issued March 30, 1993 6. Shoreline Substantial Development Permit Amendment#2 Issued July 15, 1993. 1 have also attached the following state/federal permits for the CSTC project: 7. Army Corps of Engineer's Nationwide Permit dated October 13, 1992. 8. State Department of Ecology Water Quality Certification dated November 16, 1992. Finally, I have also attached the following: 9. Plan drawing and summary descriptions of the existing CSTC site wetlands delineation under the 1989 manual (used by the City for the CSTC site permit review) 10. Plan and acreage summary of the existing CSTC site wetlands delineation under the 1987 manual(used by the Corps and Ecology for the CSTC site permit review) 11. Memo from Marc Boule to Lori Pitzer dated 1/29/92 clarifying delineation for wetland Z on the CSTC site under the 1989 manual Each of the attachments listed above is marked with the same number assigned it above. Upon review of the above information I have the following observations: City permit review for the CSTC project • Since the start of the Oakesdale project EIS process, it has been assumed that the Oakesdale project would need to mitigate for impacts to the CSTC wetlands, even though I have heard it stated that the CSTC wetland was designed to accommodate the Oakesdale alignment. • The City used the 1989 manual in its review of the CSTC project's wetland impacts. • Attachment 9 shows the CSTC existing wetlands under the 1989 manual. Wetland Y and Z were impacted by the CSTC project while wetland X was avoided. Wetland Z was about 12 acres, wetland Y about 1 acre, and wetland X about 1.5 acres. Since wetland X was avoided, a Bob Mahn Issues Pertaining to the Boeing CSTC Wetland Page 2 total of 13 acres of wetlands was therefore impacted by the CSTC project using 1989 manual delineations. • Item 3 of the Hearing Examiner's Decision (Attachment 2) committed Boeing to maintaining the CSTC mitigation wetland for at least 20 years. • In reviewing the CSTC file, I thought the staff report for the SEPA decision,the staff report for the Hearing Examiner, and the text of the shoreline permit did not agree conclusively on the subject of wetland mitigation required by the City. It is especially unclear to me how the City regulated wetland X, which was not impacted except to install plantings and a temporary landscape irrigation system. It is my understanding that wetland X is not part of the required mitigation for the CSTC impacts. • The only permit condition I found somewhat pertaining to the acreage of required wetland mitigation is condition 4 of the SEPA decision (Attachment 1). Condition 4 states that if the CSTC lake was successful within 24 months after its construction, then no other mitigation for wetland Z was required. The CSTC lake is approximately 8.9 acres while wetland Z was about 12 acres. I could not find any documentation in the file on how this condition was applied by the City. • If the lake was adequate mitigation for wetland Z, then the riverine and delta portions of the CSTC mitigation wetland were to compensate for impacts to wetlands X and Y. If wetland X was not impacted, then the 6.1 acres of mitigation area in the delta and riverine wetlands is much larger than the approximately 1 acre impacted wetland Y. • Attachment 11 notes that the area for wetland Z in the original delineation report for the City under the 1989 manual included 0.37 acre in some ditches which would not be regulated under the City's draft wetlands ordinance. I did not find any information in the file indicating whether this area was subtracted from the impacted acreage. • Based on the above observations, I feel there is a chance that Boeing created excess wetland acreage as far as the City's permits are concerned, which may then allow the Oakesdale project to fill the wetlands but not have to take on the 20-year maintenance requirement set upon the CSTC mitigation. However, accepting 20 years of maintenance may be a small price to pay to avoid making the mitigation issue too complicated or potentially contentious. State/federal wetlands permits for the CSTC project • The Corps and Ecology permit reviews were based on the 1987 manual. • Attachment 10 shows the CSTC existing wetlands under the 1987 manual. Wetland A, B, C, D, and E were impacted by the CSTC project while wetland F was avoided. Wetlands A to E on the CSTC site totaled 4.86 acres. Wetland F totaled 1.47 acres. • The State Department of Ecology Water Quality Certification states that the 14.99 wetland acres created/enhanced by the CSTC project is the mitigation for filling 1.11 acres and enhancing 3.75 acres of isolated wetlands for a total of 4.86 acres of impact. With 14.99 acres being created/enhanced, this is a huge mitigation ratio of over 3:1 for impacts to isolated, low quality wetlands. • Because Ecology issued the certification with the understanding that the 14.99 acres was the mitigation for the CSTC project, it is unlikely that Ecology will modify the CSTC permit or Bob Mahn Issues Pertaining to the Boeing CSTC Wetland Page 3 issue a separate decision so that the small impact from the Oakesdale project would not require mitigation. Even so, we may wish to try and show that mitigation is not required by the City, allowing the Oakesdale project to avoid having to take on the City's 20-year maintenance requirement. • The Ecology permit did not list the Springbrook Creek riparian wetland F as being part of the mitigation although Boeing enhanced wetland F by installing plantings and a temporary landscape irrigation system. Therefore, wetland F is not a mitigation wetland even though it was enhanced. This is important because the boundary and location of wetland F was redelineated by Shapiro and found to be much different from the earlier CSTC delineation. • A condition of the Corps permit was that the CSTC wetlands be created as proposed by Boeing in a June 1992 report. If the Corps issued their permit with the condition that the 14.99 acres was the mitigation for the CSTC project, then (similar to Ecology) it is unlikely that the Corps will modify the CSTC permit or issue a separate decision so that the small impact from the Oakesdale project would not require mitigation. It is unclear to me why the Corps of Engineers permit lists the fill impact as 1.66 acres when Ecology listed the fill impact as 1.11 acres, but this discrepancy does appear to me to be a critical issue. • It is important to note that the Corps considered the existing wetlands on the Longacres site as being above the headwaters of Springbrook Creek and is partially why a nationwide permit was be used for the CSTC project. The Corps has and could change its ruling for the Oakesdale project and now call the mitigation wetlands as being below the headwaters and adjacent, but at least the precedent of the CSTC permit is in our favor. • Finally, the most important point of all these observations is that, hopefully, the Corps and Ecology will consider the excessive mitigation that was done for the CSTC project and allow use of a Section 404 nationwide permit rather than an individual permit for the Oakesdale project. I hope this information is helpful. I will continue to research the CSTC file to confirm what the final mitigation was for the CSTC project and whether excess acreage was created from the City's standpoint. If you have any questions,please call me at 277-5547. U:1997:97-023:SW DETERMINATION OF NON-SIGNIFICANCE-MITIGATED REVISED MITIGATION MEASURES PROJECT: Boeing Commercial Airplane Company Customer Service Training Center PROPONENT: The Boeing Company APPLICATION NUMBER: ECF;SA;SSM;V-006-92 DESCRIPTION OF PROPOSAL: The Boeing Company is seeking site plan approval for the development of a training center complex (CSTC) to provide specialized flight simulation instruction for airline transport pilots. LOCATION OF PROPOSAL: Longacres Drive, south of 1-405 and north of SW 19th Street (if extended) CONDITIONS: The Environmental Review Committee issued a Determination of Non- Significance - Mitigated with the following conditions: 1 . The applicant shall, in order to mitigate impacts in the area, provide a site preparation plan with components which ensure that: a) filling of the site is achieved in a manner which is consistent with recommendations made by registered civil engineers, in a study conducted in January, 1992; b) all filling activities adjacent to wetlands which occur between May 1 and September 30th are inspected each day by a registered civil engineer, and activity reports are to be submitted to the City on a biweekly basis; c) a registered civil engineer is present on the site during all filling activities adjacent to wetlands which occur between October 1 and October 30 and routine activity reports are to be submitted on a weekly basis; and d) hydroseeding of the disturbed areas on the subject property is to be completed immediately following filling, if there is a delay between filling and construction activities. (Note 1 .a: Filling is to be achieved according to requirements established in the City's Mining, Excavation and Grading Ordinance and the Land Clearing and Tree Cutting Ordinance.) 2. The applicant shall, in order to mitigate impacts in the area, from construction activities, provide a 'construction management plan including the following components: a) an erosion control element; b) an element for period watering of the site to control dust; c) an element for wheel washing construction vehicles prior to their leaving the site; d) an element for providing temporary site identification to facilitate emergency services during construction activities; and e) a $2,000.00 deposit for street cleaning. The plan must be approved by the Development Services Section prior to issuance of construction/building permits. 3. The applicant shall, in order to mitigate potential impacts in the area, conduct visual testing of soil during excavation to determine whether contaminated soils exist. In the event that contaminated soil is found, all work shall stop immediately in the contaminated area and the applicant shall then seek direction from the jurisdiction of authority. The applicant shall also notify the City concerning the full extent of contamination and provide plans approved by the jurisdiction of authority for remediation/transport of affected material. 4. The applicant shall, in order to address potential impacts to the area, from proposed disturbances to Wetland Z for the creation of a permanent lake/wetland feature, provide the following: a) an agreement to implement the improvement plan (i.e. wetland ecosystem plantings and plantings for the 25 foot buffer) as recommended in the report presented by certified wetlands biologists to the City in January, 1992; this agreement shall be provided prior to public hearing for the Training Center; and b) a specific plan/schedule for installation of the plantings within the wetland and in the rmitmeas - 1 buffer area, to be approved by the Development Services Section, the Development Planning Section and the Storm Water Engineering Section prior to the issuance of the building permits. In the event that the lake is established as a wetland ecosystem within a 24 month period following completion of installation, to the satisfaction of the City, then no additional wetland mitigation shall be required for Wetland Z. If the wetland ecosystem is not established to the satisfaction of the City, then Boeing shall be required to provide a plan for wetland replacement at a ratio of 1 .25:1 and/or restoration at a ratio of 2.5:1 (for those portions of the lake which are not functioning at a reasonable level (as a wetlands ecosystem). The plan/installation schedule shall be provided to the satisfaction of the Development Services Section and the Development Planning Section immediately following the end of the 24 month period; installation of wetlands improvements shall be completed according to a schedule approved by the Development Services Section. 5. The applicant shall, in order to protect the wetlands on site, provide an agreement to the satisfaction of the City Attorney allow annual monitoring by the City of each and all of the wetlands areas on the approximately 51 acre site for a period of five years following completion of their installation, to ensure that these areas are being properly protected and maintained. 6. The applicant shall, in order to address potential impacts in the area, develop an upland landscaping maintenance plan for the areas of the site which abut Wetlands X, Y and Z. The plan should ensure that the planted areas can be maintained without damage to the wetland ecosystem. Conceptual plans for the vegetation maintenance systems are to be approved by the Development Services Section prior to issuance of the construction/building permits. 7. The applicant shall, in order to mitigate potential impacts in this area, provide: a) a light/glare analysis to explore effect levels from exterior glazing ("vision" glazing) on vehicles travelling wetbound on 1-405; and b) in the event that glare exposure levels are determined by the City to be potentially hazardous, the applicant may be asked to modify those facades (e.g., alter window angles, utilize solar tinted, low reflective glazing) which are found to create such light/glare impacts. Glazing plans should be provided prior to public hearing. 8. The applicant shall, in order to address potential impacts in this area, provide the following: a) a Transportation Management Plan which complies with City standards, METRO standards, and State standards for trip reduction; the plan should include, but need not be limited to the following components: (i) a transportation coordinator to provide information about the Transportation Management Program and to monitor the success of TMP activities; (ii) an information/education program for the encouragement of ride sharing (private or public transit); (iii) public transit subsidies; (iv) a reserve parking plan (including 51 of the required 881 spaces); (v) preferential parking for HOVs; (vi) guaranteed ride home plan for employees who ride share, as feasible; (vii) flex-time schedules for employees, if feasible; (viii) a "kiss and ride" center; and (ix) bicycle parking racks; TMP improvements shall be approved and implemented at the time of issuance of a Certificate of Occupancy for that phase. Following a pilot period of two years for the TMP the applicant may apply to the Zoning Administrator to obtain release of some or all of the parking spaces placed in reserve. The decision of the Zoning Administrator shall be based upon direct observation at the site and upon documentation provided by the applicant, verifying that all reasonable effort has been employed to ensure the successful functioning of the TMP during the test period. b) an agreement to reserve a right-of-way (minimum of 80 feet; maximum of 90 feet) along the Oakesdale Avenue corridor, to an alignment selected pursuant to the Oakesdale Avenue EIS; this reservation is established in order to permit a future extension of the roadway, to City rmitmeas 2 standards, across property owned by The Boeing Company. The reservation shall remain in effect for six years following the issuance of the Certificate of Occupancy for the Training Center. (Note 8.a: As required per City Policy, the applicant will be required to take the following actions: (i) make a contribution to the Valley Transportation Benefit Zone in the amount of $276,000.00 ($0.46 x 600,000 square feet) for the training facility, to be paid prior to the issuance of building permits for this phase of development; (ii)) make a contribution to the Valley Transportation Benefit Zone in the amount of $7,084.00 ($0.22 x 32,200) for the utility service structures, to be paid prior to issuance of building permits for this phase of development; (iii) provide a restrictive covenant, to the satisfaction of the City Attorney and the Transportations Systems Division, ensuring fair share participation in L.I.D. #1 (Valley Transportation Improvement Plan), prior to issuance of a site preparation/building permit; and (iv) provide a restrictive covenant, to the satisfaction of the City Attorney and the Transportations Systems Division, ensuring fair share participation in L.I.D. #2 (Valley Transportation Improvement Plan), prior to issuance of a site preparation/building permit.) Per City policy, the applicant will also be called upon to provide improvements to S. W. 16th Street, based upon an 80 foot right-of-way, including: (i) installation of paving to an area 44 feet in width; Oil installation of channelization; (iii) installation of bicycle lanes; (iv) upgrading the intersection of S.W. 16th Street and Longacres Drive; and (v) an agreement to dedicate an area 20 feet in width within the 80 foot S.W. 16th Street right-of-way for future improvement by the City and/or private property owners, if the City determines that such improvements are warranted to mitigate impacts from future developments. 9. The applicant shall, in order to mitigate potential impacts in this area, provide a plan for additional on-site active/passive recreation facilities (e.g., game courts, outdoor seating areas, warm up/cool down areas), to be reserved for employees. Plans should be approved prior to public hearing; facilities should be installed prior to issuance of the Certificate of Occupancy. 10. The applicant shall, in order to mitigate potention impacts in this area, consult with the Police Department to develop a security management plan (e.g., security guard, traffic management, voluntary contributions toward purchase of equipment, funding of personnel) for employees and students travelling to and working at the CSTC development. Plans should be approved by the Development Services Section and the Police Department prior to public hearing. 11. The applicant is encouraged, in order to mitigate potential impacts in this area, make a voluntary Contribution in the amount of $39,184.00 ($0.62 per square foot) to the (pending) Fire Benefit Zone. This contribution should be provided prior to the issuance of a building permit. (Note 11 .a: This contribution will become a requirement in the event that the Fire Benefit Zone is approved by City Council prior to the issuance. of the first building permit for the Training Center). NOTE #1: At the time of site plan review, staff may make recommendations for mitigation measures, as necessary, to address criteria established in the Zoning Ordinance (e.g., Site Plan Review Ordinance). NOTE #2 At the time of Shoreline Master Permit review, the applicant will be called up to provide plans for a pedestrian trail adjacent to Springbrook Creek, which ensure that: a) the configuration of the trail provides an attractive, safe access and transition to the abutting upland areas; b) interpretive signs are provided to offer users an understanding of the natural environment; and c) design and location of the trail minimize impacts to the Creek habitat and protect shoreline integrity. These plans shall be approved by the Development. Planning Section, Stormwater Utilities, and Parks/Recreation Department, prior to public hearing for site plan review and installed prior to the issuance of the Certificate of Occupancy. Preservation and maintenance plans will be developed as well, based upon Parks and Recreation Department policies. rmitmeas - 3 NOTE #3: At the time of building permit review, staff will require that the applicant make improvements and/or pay fees as mandated by City policy, plan or code. For example, the applicant will need to: a) demonstrate an acceptable plan for installation of water lines in accord with the Comprehensive Water Plan; b) demonstrate an acceptable plan for installation of sewer lines; c) provide an agreement to hold the City harmless for any damage to the subject property in the event of a flood; d) provide special utility connection fees and easements, as/if necessary; e) install curbs, gutters, sidewalks, street lighting; f) provide an inventory of hazardous materials and a a storage/use plan for those products, as well as a plan for notification of the Fire Department in the event of an unauthorized spill of those materials; and g) provide a fire flow analysis and fire flow plan. NOTE #4: METRO is authorized to surcharge the interceptor up to elevation 22.00. Finished floor elevations for the structures are at 18.50. The applicant should work with METRO to develop mutually acceptable plans for facility design. NOTE #5: At the time of construction permit review, the applicant shall be required to provide a specific stormwater management system plan for the site, which addresses on-site features (such as level terrain, the wetlands, and Springbrook Creek) and which is compatible with the intent of the King County Surface Water Control Design Manual and the Nelson Place/Longacres Way Agreement. The Tukwila Nelson Place/Longacres Way storm interceptor, if constructed, must be a separate system from the S.W. 16th Street storm system, unles the connection of the S.W. 16th Street system is approved by the City of Tukwila and the City of Renton. NOTE #6: The applicant may need to work with the State Departments of Ecology and Fisheries and the U.S. Army Corps, to obtain necessary approvals/permits for improvements to Springbrook Creek and for modifications to wetlands. r rmitmeas 4 0_1 June 29, 1992 OFFICE OF THE HEARING EXAMINER CITY OF RENTON REPORT AND DECISION APPLICANT: THE BOEING COMPANY Customer Service Training Center (CSTC) Longacres Site File No.: SA;SM;-92-006 LOCATION: Longacres Drive, S of I-405 and N of SW 19th Street (if extended) SUMMARY OF REQUEST: The Boeing Company is seeking Site Plan approval and a Substantial Shoreline Master Permit for the development of an approximately 638,242 square-foot training center complex (CSTC) on an approximately 51 acre site. This training center is intended to provide specialized flight simulation instruction for airline transport personnel. SUMMARY OF ACTION: Development Services Division Recommendation: Approval with Conditions DEVELOPMENT SERVICES The Development Services Division Report was received by DIVISION REPORT: the Examiner on May 12, 1992 PUBLIC HEARING: After reviewing the Development Services Division Report, examining available information on file with the application, and field checking the property and surrounding area, the Examiner conducted a public hearing on the subject as follows: MINUTES The hearing was opened on May 19, 1992, at 9:00 a.m. in the Council Chambers of the Renton Municipal Building. The Examiner clarified the purpose of the hearing, stating that a site plan approval was being considered, not demolition permits for any of the buildings on the site. The environmental determination, which was final and conclusive and was not appealed, also was not to be considered at this hearing. All that was being determined was whether the proposal for the training facility and the shoreline permit were appropriate for the site. He said that whether Longacres should continue to exist or be subsumed by the Boeing project was not a subject for discussion. While the public had a right to petition and ask the City to change its opinion, that was not the issue before this body at this time. He stressed that he would not entertain testimony that was not relevant. Parties wishing to testify were affirmed by the Examiner. (This is not a verbatim transcription, but rather, a summary of the testimony.) The Boeing Company SA;SM;-92-006 June 29, 1992 Page 28 25. In summary, while the proposal will alter the local environment, it appears to do so in a sensitive manner, and in so doing provides a well-designed complex, public amenities, habitat enhancement, and economic benefits to the community. 26. It would be unseemly not to address, outside the framework of the decision itself, the issues that many people tried to raise at the public hearing. This office cannot ignore the emotions that formed the background for this proceeding. Not only does it seem appropriate to acknowledge those emotions but to add that this office reluctantly found it necessary to limit the nature of the testimony to issues that were relevant to a review of the applicant's proposal. Those criteria scrutinize an applicant's proposal vis a vis the site and vicinity. Those criteria are not concerned with displacing existing uses. This office also finds it lamentable that a unique way of life that found its home in Renton, that open green space, and that another critical segment in the area's, and more importantly, the City's economic diversity is being lost. That acknowledgement, though, cannot replace the structure and rules for reviewing this particular application. Those rules, as indicated, required limiting testimony and focusing the discussion to the proposed use of the land, not the loss of the current use. While the applicant has indicated a willingness to commemorate the Longacres Race Track, the provision of the commemorative plaque is a token "gesture" that merely reflects the irony involved in the loss of a major amenity, employer, taxpayer, diverse economic asset, and unique place. DECISION The Site Plan is approved and the Shoreline Permit should be approved subject to the following conditions: 1. The applicant shall comply with the conditions imposed by the ERC. 2. The applicant shall provide a revised upland landscaping plan that reflects a wetland ecosystem and discourages use of mere ornamental plants. These plans shall be subject to review and approval of the Development Services Division. 3. The applicant shall be bound to use whatever resources are necessary to create a viable wetland environment and not abandon the effort as a failure after an initial five-year period. The applicant shall be required to commit at least 20 years to forging a successful wetland environment in all of the areas that it alters in pursuance of this wetland proposal. Wetlands are a delicate balance of water, land, plants, and animals and can take many years to come to equilibrium. The applicant will be expected to provide the time and resources to permit this natural process an opportunity to work. In the event the wetland enhancement fails, the applicant shall retain all such former wetland area as permanent open space and habitat. The boggy area that now exists on this site shall be restored to closely approximate the current conditions. In addition, the applicant shall provide funds to fulfill its wetland obligations in the City wetlands bank. 4. The applicant shall contribute to the Fire Benefit Zone for the Valley an amount not less than $331,886.00 which is based on the analysis found in Resolution #2895 and its supporting documents. The Boeing Company SA;SM;-92-006 June 29, 1992 Page 29 5. The applicant shall pay its pro-rata share for the development of Oakesdale Avenue SW between the north property line and the south property line of the subject site under standard City provisions. 6. The applicant shall provide an agreement, pursuant to Resolution 1984, which acknowledges that the City has informed the applicant that the property is subject to flooding, and that the applicant has decided to proceed at its own volition, thereby waiving the right to hold the City liable for flooding and/or for damages to its property or persons on its property from such flooding. The document is to be approved by the City Attorney and is to be duly recorded prior to the issuance of any site preparation/construction permit for the subject property. 7. The applicant shall, in the event that the building/construction permits for the development are not available within thirty (30) days of the completion of site preparation (demolition or fill/grade), and/or in the event that the applicant elects to delay beginning of project construction beyond thirty (30) days from the completion of site preparation, provide hydroseeding of the interior upland portions of the site, boundary landscaping, and all wetland improvements as mandated by the Environmental Review Committee. Improvements shall be installed as depicted in plans submitted to the City in March, 1992, in order to protect the integrity of the site, to prevent erosion, and to mitigate visual impacts to adjacent public and private properties. No additional landscaping shall be required in conjunction with site preparation. Interior landscaping, as appropriate, will be required in each phase of development. 8. The applicant shall provide an agreement to install a pedestrian trail along Springbrook Creek, pursuant to plans submitted in May, 1992, to ensure that: (i) the configuration of the trail provides an attractive, safe access and transition to the abutting upland areas; (ii) interpretive signs are provided to offer users an understanding of the natural environment; and (iii) design and location of the trail minimize impacts to the Creek habitat and protect shoreline integrity. These plans shall be approved by the Development Services Division and the Parks/Recreation Department prior to the issuance of construction/building permits and installed prior to the issuance of the Certificate of Occupancy. Preservation and maintenance plans will be developed as well, based upon parks and Recreation Department policies. 9. The plans shall be designed to minimize reflections that might disturb or attract the bird life found in this habitat. ORDERED THIS 29th day of June, 1992. — T�Yoj'L-"'- -.11 r FRED J. K U MAN HEARING EXAMINER J COMMITTEE OF THE WHOLE COMMITTEE REPORT October 12, 1992 Appeal of Site Plan Approval for the Boeing Customer Service Training Center (Referred to Planning & Development Committee on 9/14/92) (Referred to Committee of the Whole on 9/28/92) The Planning and Development Committee met on this topic on September 24 , 1992 and presented the Renton City Council with a report and recommendation at the City Council meeting of September 28 , 1992 . The full Council rejected the Planning and Development Committee report and recommendation and referred this matter to the Committee of the Whole for preparation of a Committee of the Whole report. Colleen Cole-Bowron appealed from an alleged lack of notice of a shorelines hearing before the Hearing Examiner. Pursuant to City Code Section 4-8-10 .A. 5 , the Hearing Examiner is without jurisdiction under the City Code to hold a public hearing on a shorelines development permit except when there is a conflict between two city departments. That did not exist here. Otherwise, the Examiner' s jurisdiction is limited to decisions on shorelines variances and shorelines conditional use permits. This approval was neither of those two items. Notice of a shorelines substantial development permit is required pursuant to the Shorelines Master Program Section 2 . 02 . 02 . That procedure was followed. Additionally, the Shorelines Master Program Section 2 . 10 governs appeals from the granting or denying of the substantial development permit on the shorelines of the city. That appeal or review is with the State of Washington Shorelines Hearings Board. The City Council is without jurisdiction to hear appeals involving the shorelines issue. The Committee recommends that the Council find no error. The Committee further recommends that the full Council find an error in law. Christopher Clifford appealed claiming that there was inadequate protection of wildlife including raptors nesting on the site. The Committee was told that The Boeing Company had written and requested both the Washington State Department of Wildlife and the U. S. Department of Fish and Game to be on the site during its demolition work to prevent unnecessary damage to wildlife. State law also requires certain protection of bird species on the premises. The Examiner did not make it a requirement of the permit that Boeing contact the state and federal agencies requesting their presence at the site. The Committee finds that was an error in law and recommends that such notice be required as a condition of the site plan approval. In all other respects the Committee recommends that the Council affirm the Hearing Examiner' s decision finding no error in fact or law. The Committee of the Whole primarily addressed three issues: 1. The adequacy of the wetlands mitigation. 2 . The limitations on the public comments at the Hearing Examiner' s hearings. 3 . The lack of adequate mitigation as long as the fire mitigation fee was on appeal. With respect to these issues the Committee of the Whole recommends as follows: 1. The adequacy of the wetlands mitigation: The Council finds that the city' s wetlands ordinance does not apply to this project according to the terms of that ordinance. The wetlands mitigation for this project is adequate. The wetlands mitigation for this project has been designed to either stand alone or be combined with future wetlands mitigation should there be future development of the Longacres office project currently undergoing an environmental impact statement. 2 . The limitations on the public comments at the Hearing Examiner' s hearings: The Hearing Examiner limited the testimony at the public hearing to site plan review issues. He refused to take testimony concerning the issue of the appropriateness of this project eliminating the Longacres Race Track. Such a limitation was not an error. The Examiner further limited the length of comments, but at the end of the testimony provided an opportunity for further comments. What is more, the opponents have had two opportunities to address the City Council on any issue they wished concerning this development, with the grand total of testimony before the Hearing Examiner and the City Council being approximately eight hours. An adequate opportunity has been presented to address any issue involved with the project, and the Committee of the Whole recommends that the Council find no error. 3 . The lack of adequate mitigation as, long as the fire mitigation fee was on appeal: The Boeing Company has formally withdrawn its appeal of the fire mitigation fee and this no longer remains an issue. In all other respects the Committee recommends that the Council affirm the Hearing Examiner' s decision finding no error in fact or law. -ead-44 Kathy eolker-Wheeler, Council President CITY10:04:as. 2 0 SHORELINE MANAGEMENT ACT OF 1971 SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT APPLICATION NO.: LUA-92-006-ECF;SA;SSM;V DATE RECEIVED: January 21, 1992 DATE OF PUBLICATION: January 24/31 1992; February 2/9, 1992 DATE APPROVED: October 13, 1992 TYPE OF ACTION(S): [Yes] Substantial Development Permit [ N/A] Conditional Use Permit [ N/A] Variance Permit This action was taken on the following application: APPLICANT: The Boeing Company PROJECT: Boeing Commercial Airplane Company Customer Service Training Center(BCAC - CSTC) LOCATION OF PROPOSAL: Property is located between Longacres Drive on the west and Oakesdale Avenue(if extended) on the east; it is located south of 1-405 and north of S.W. 19th Street (if extended). LEGAL DESCRIPTION: See Exhibits SEC-TWNP-R: See Exhibits WITHIN SHORELINES OF: Springbrook Creek STATE SHORELINE OF SIGNIFICANCE (YES/NO): NO. The site is adjacent to an area designated as a "shoreline of the state"; it is not designated as a shoreline of"statewide significance." ENVIRONMENT DESIGNATION: Urban Designation (Pending) (SMP 5.04.03) APPLICABLE MASTER PROGRAM: City of Renton SHORELINE MASTER PROGRAM DEVELOPMENT DESCRIPTION: PROJECT: The Boeing Company is seeking a Substantial Development Permit related to the development of an approximately 638,242 square foot training center complex (CSTC) on an approximately 51.7 acre site. This training center is intended to provide specialized flight simulation instruction for airline personnel. The complex is anticipated to be completed in December of 1993. Between 900 - 1100 persons will be employed here; the CSTC will train between 650 - 800 students (airline personnel) per session; sessions are up to one week . Sessions are conducted over a period ranging from one day to one week. The development is proposed to include a 600,000 square foot training facility on Parcel 1, south of S.W. 16th Street. Parcels I - M, north of S.W. 16th Street would be developed with two utility support structures (32,200 square feet). A 6,042 square foot power substation is planned on the northwest comer of the site to support the complex. Approximately 880 +/- parking spaces will be provided.. The complex is also proposed to include approximately 25 acres of retained/enhanced natural features (e.g. wetlands, native vegetation), introduced landscaping, active and passive recreational amenities, and a public-access trail abutting Springbrook Creek. The site is located in the Valley;Drainage Basin. The subject property is located on level terrain, which has been previously filled; existing soils are silty sand and gravel. Portions of the site are overlain by the 100 year FEMA floodplain; similarly, the site is located in an area where the water table is shallow--within one foot to eight feet of the surface. Certified wetlands biologists report that, based upon the Federal Standards Manual (1989), three (3) acres of emergent wetlands (Class III/degraded) have been identified on the CSTC site. These wetlands are located within 200 feet of Springbrook Creek, south of S.W. 16th Street. These wetlands are included in the City's Sensitive Areas Map as Class III (degraded) wetlands as well. Additionally, DOE defines these wetlands as highly disturbed (DOE letter- 10/91 File No. ECF 120-91). No wetlands are found on the properties north of S.W. 16th Street. The proposed development includes actions which affect these wetlands-- including filling, enhancement of existing wetlands, and creation of new wetland areas. These actions are generally consistent with the City's Wetland Ordinance and have been supported in concept by the Washington State Department of Ecology. As a result of the visibility of the site, and the presence of environmentally sensitive areas, such as Springbrook Creek and the wetlands, particular attention has been directed to design of structures (e.g. set backs, articulated facades) and amenities so that improvements provided with each element are reasonably compatible with the Creek and the wetland areas. Additionally, the development is planned to be buffered by wetlands improvements and by thematically integrated upland landscaping distributed over approximately 25 acres of the site. Based upon the approved site development plan, the project is considered to meet or exceed, and, thus, be compatible with, City regulations and policies such as the Comprehensive Plan (e.g. Environmental Elements [Section 1], General Development Elements, Green River Valley Elements, Commercial Elements [Section V], Urban Design Elements [Section III]); the Zoning Ordinance (Commercial Use); the Site Plan Review Ordinance (4-31-33); the Parking and Loading Ordinance (4-14); the Mining, Excavation and Grading Ordinance (4-10;4-31); the Land Clearing and Tree Cutting Ordinance (4-9); the Landcaping Ordinance (4-31-34) and the Wetlands Management Ordinance. (See Exhibits). The City's Green River Valley Area Plan calls for service uses, such as the Training Center, in this area of the City. Under the Plan, a number of complexes, which are complementary in design and purpose have been developed on nearby properties. SUBSTANTIAL DEVELOPMENT PERMIT: A Substantial Development Permit is sought under the City's Shoreline Management Program, based upon the proximity of the project site to Springbrook Creek (within 200 feet from the mean high water line). Springbrook Creek, where it flows adjacent to the site, is defined by the Department of Ecology as a shoreline of the state (pursuant to the SMA) and as a water course (Class 11), offering an important sanctuary for flora and fauna. Renton has not yet designated the Creek, but considers this water body an "urban" environment, pursuant to the Shorelines Master Program (Section 5.03.04); formal designation is pending. The Department of Ecology has provided support, in concept, for the urban designation for this section of Springbrook Creek. As planned by the applicant, and approved by the City, the CSTC complex is permitted under the City's Shorelines Master Program and the State Shoreline Management Act. The Training Center(and its attendant amenities) are designed, sited and planned to be utilized in a manner which is considered to be compatible,with the integrity of Springbrook Creek; improvements should not result in negative impacts upon the Creek habitat. For example, the proposed development does not site structures within the 200 foot corridor adjacent to the Creek; applicable Shoreline regulations could permit such a development within 25 feet of the Creek in this urban environment. Other selected amenities and services have been planned to be located within 200 feet of the Creek. For example, the applicant has agreed to develop a trail along Springbrook Creek, with interpretive signs, as recommended by staff(in accord with the Shoreline Master Program) to address requirements for public access to the shoreline. This trail will be designed to be linked, in the future, with the City's Master Trail. The trail would be a public amenity, providing (a) pedestrian access to Springbrook Creek (via the project site and via public rights-of-way), (b) interpretive signs; (c) seating areas/observation points from which to view habitat areas, and (d) active recreational opportunities. Boeing will preserve the trail through agreements/easements negotiated with the City. The City will maintain this trail, as it does all public trails. The applicant will remove approximately 55 buildings from the site to accommodate the CSTC complex-- several of these buildings are located within 200 feet of the shoreline. A small number of the structures did include asbestos containing building materials. These materials were removed as required by the State (Department of Ecology - WAC 296-65-001 Asbestos Removal and Encapsulation and Puget Sound Air Pollution Control Agency's Regulation 3, Article 4). PSAPCA has inspected the site following asbestos removal and has found the clean- up activities to have been satisfactory. Construction of sections of underground utilities, as well as a portion of the parking area for the CSTC building are planned to be located within the 200 foot corridor, as well; these improvements will be outside of the 25 foot corridor immediately adjacent to the Creek. Native vegetation is planned around these improvements as well. The proposed development includes actions which affect wetlands within the 200 foot corridor adjacent to Springbrook Creek, identified as Wetland "X" and Wetland "Y". Improvements to these wetlands will occur witin 50 feet of the Creek. Planned actions include filling, enhancement of existing wetlands, and creation of new wetland areas with a wetlands ecosystem. Site preparation plans (grading, filling, "delta" landscaping) have been developed in a manner which is designed to protect site integrity. For example, filling activities will be regulated, as proposed in the soils/drainage studies provided by Geotech Engineers; a construction management plan (e.g., erosion control, site clean-up) has been required as well. Supervision by registered soils engineers will be undertaken to protect the site and nearby properties. With preparation of each section of the site, Boeing will provide all appropriate wetland improvements, perimeter and interior upland landscaping, and infrastructure, as necessary to enable the site to appear attractive and to operate functionally. In the event that construction is not begun at the completion of site preparation, then hydroseeding, wetland plantings and boundary plantings will be introduced immediately to prevent upland/wetland erosion and improve the appearance of the site.) A construction management plan has been prepared which is designed to address impacts such as noise, dust and dirt, and air quality. The plan includes measures such as screening of the construction area, monitoring by registered soils engineers, erosion control systems, drainage control, limited hours of operation, site clean-up requirements, street cleaning requirements, and compliance with related regulations (e.g., Mining, Excavation and Grading Ordinance, PSAPCA standards, the Noise Ordinance). Based upon SEPA Rules, local regulations and DOE guidelines, wetlands removed (through filling activities, excavation or expansion) will need to be replaced. As the wetlands exist in previously filled areas, and they offer low functional values, plans for creation and/or enhancement of wetlands have been designed so that the biological functional value of these features is increased. For example, under the proposed development, Wetland X (in the floodplain of Springbrook Creek), which is now+/- 1.5 acre in size will be enhanced, as will Wetland Y, at +/- 1.5 acre, which is located west of the Creek; both will be incorporated in a wetland "delta" landscaped area. Improvements are proposed to be installed at the time of construction of the Training Center. Monitoring of the wetlands will be required from the time of their development and continuing until twenty years following the installation of structures. Access easements for City inspection and surety devices for replacement will be required. If the wetland ecosystem is not established to the satisfaction of the City, then Boeing would be responsible for introducing new wetland improvements at a ratio of 1.25:1, with the plans for planting and maintenance approved by the City. Landscaped buffer areas of a minimum of 25 feet in width will be required to provide a transition area between wetland and upland areas on the site. These plantings will be suitable in number, size and diversity to complement existing native vegetation, to create suitable aesthetic visual buffers and to support an enhanced wildlife habitat (i.e., the "two percent for wildlife" requirement). The applicant will provide a landscaping preservation surety device for protection of wetland and upland plantings. These wetland mitigation plans are consistent with the City's Wetland Ordinance and have been supported in concept by the Washington State Department of Ecology. This plan is designed to comply with DOE Guidelines and to result in "no net loss" of wetlands. Further, the improvement plans to the ecosystem are consistent with the City's Comprehensive Plan and Green River Valley Plan which call for recognition of wetlands, wildlife habitat, and floodplain areas in conjunction with development. Additionally, such improvements to Wetlands "X" and "Y", such as changes to terrain elevation, hydration systems and introduction of plant species to improve the quality of the wetlands and complement the Creek, should control flooding, as the implementation of this improvement plan, will result in the lowering of the existing ground level within the shoreline zone. This plan has been approved in concept by city technical staff(e.g. Storm Water Engineering, Long Range Planning) and by the Department of Ecology. This improvement system would be located outside of the area for the outfall of stormwater which leads to an existing culvert within the 200 foot area of Springbrook Creek. Stormwater drainage from all structures and roadways will be required to be treated prior to entry into wetlands or the Creek. When developed, the CSTC complex is anticipated to generate some minor sound impacts and may affect air quality, related to operations and to vehicular travel. Because the development is generally planned so that structures, truck loading/circulation systems, employee parking and other features are distant from the Creek and the wetlands, those impacts are not anticipated to be significant to these nearby environmentally sensitive areas. Landscaping will also buffer the Creek and wetlands from on-site activities; proposed improvements to habitats (e.g. plantings which provide food and nesting areas) should increase the viability of these areas, thereby off- setting those impacts which do result from operations and traffic activities-- many of the species of bird and mammals which frequent the Creek and emergent wetlands are reported (Audubon Society) to have leamed to exist comfortably in an urban environment. The City has approved the Shorelines Substantial Development Permit application, as the Training Center (and its attendant amenities) are designed and planned to be utilized in a manner which preserves the integrity of the Creek and protects/enhances Creek habitat. The proposed complex is considered to be compatible with other developments in the vicinity of Springbrook Creek also. REVIEW PROCESS: The development applications for CSTC were submitted to the City in January, 1992. Publications for the Shorelines Substantial Development Permit (SSM) were issued in January, 1992 and February, 1992. Pursuant to the City of Renton's Environmental Ordinance and SEPA (RCW 43.21[C], 1971, as amended), the Environmental Review Committee reviewed each and all of the elements of the proposed development (based upon direct evaluation and review of analyses provided by representatives of various City Departments) for compliance with applicable City and State regulations, policies and guidelines. The Committee issued a Determination of Non-Significance - Mitigated on March 2, 1992 (amended April 16, 1992) with conditions established to address identified environmental impacts pursuant to the Site Plan Review application and the application for the Shorelines Substantial Development Permits for the CSTC. (see Exhibits - attached). Public comment and appeal periods were provided as required by applicable law and policy. Pursuant to the City of Renton's Comprehensive Plan, Building Regulations, Site Plan Review Ordinance, the proposed site plan was then reviewed by the Land Use Hearing Examiner on May 19 and May 26, 1992. (Information concerning the Shorelines Development application was included at public hearing for information only.) A report was issued by the Hearing Examiner on June 26, 1992, indicating approval of the proposed site plan with conditions (see Exhibits) and indicating a recommendation to City officials, in support of the proposed Shorelines Substantial Development permit. • NOTE: Staff note that under City regulation, the Hearing Examiner has final authority with respect to an action on a site plan approval application. For the Shorelines Substantial Permit, the Hearing Examiner makes a recommendation. The City then takes action (utilizing applicable state and local regulations, as well as staff and Hearing Examiner recommendations with respect to the application) and notifies the Department of Ecology of this action. The Hearing Examiner's approval of the Site Plan for the project was confirmed by Renton's City Council on October 13, 1992. City officials conducted a final review of the Substantial Shoreline Development Permit, pursuant to the criteria/applicable sections of the Shorelines Master Program (listed below) APPLICABLE MAS,rER PROGRAM The following sections/pages of the Master Program are applicable to the development: Section 2: Procedures Page(s) 5-6 Section 3: Shorelines No. 3.01; Page(s) 13 No.3.03 (5) (amendment pending); Page(s) 13 No. 3.4 Page(s) 13 Section 4: Goals and Policies Goals: No. 4.01.01 (A); (B); 4.01.02 (A) - (C) Page(s) 14 Policies: No. 4.02.01; 4.02.02 (A) - (D) Page(s) 15 Economic Elements: No. 4.03.01; 4.03.02 (A) - (C)/(F) Page(s) 16 Public Access: No. 4.04.01; 4.04.02 (A)/(C) - (M) Page(s) 17-18 Recreation: No. 4.05.01; 4.05.02 (A); (D) Page(s) 18 Circulation: No. 4.06.01; 4.06.02 (B) - (D) Page(s) 18-19 Section 5: Environments Urban Environment No. 5.04.01 (A) - (D) Page(s) 22 Section 6: General Use Environmental Effects No. 6.02.01 - 6.02.04 Page(s) 23 Use Compatibility No. 6.03.01 (A) - (E) Page(s) 23-24 Public Access No. 6.04.01 - 6.04.02 Page(s) 24 Facility Arrangement No. 6.05 Page(s) 25 Landscaping No. 6.06 Page(s) 25 Unique Areas No. 6.07 Page(s) 25 Section 7: Specific Use Regulations Commercial Use No. 7.05.01 (A); (C); (D) Page(s) 28 Review was also based upon the State Shorelines Management Act, the City's Environmental Review Ordinance, and other applicable regulations/guidelines. The manner in which the proposed complex complies with those general and specific policies/guidelines, is described in the attached Exhibits. Based upon this review, the City found that the proposed development was consistent with each and all of the applicable criteria. Therefore, the City granted a Shorelines Substantial Development permit on October 13, 1992, in accord with RCW Chapter 90.58. Development of this project shall be undertaken according to terms and conditions, based upon decisions and recommendations made pursuant to the Shorelines Substantial Development Permit application, as follows: 1. Environmental Review Committee Reports (as adopted March 2, 1992 and amended April 16, 1992) - See Exhibits 2. Hearing Examiner Report (June 26, 1992) - See Exhibits. 3. City Council Report (October 12, 1992) See Exhibits. This permit is granted pursuant to the Shoreline Management Act of 1971 and pursuant to the following: 1. The issuance of a license under the Shoreline Management Act of 1971 shall not release the applicant from compliance with federal, state and other permit requirements. 2. This permit may be rescinded pursuant to Section 14(7) of the Shoreline Management Act 1971 in the event the permittee fails to comply with any condition hereof. 3. No construction permit pursuant to this Substantial Development Permit shall be issued until thirty (30) days after approval by the City of Renton Planning/Building/Public Works Department or until any review proceedings initiated within this thirty (30) day review period have been completed. 4. The applicant agrees that it shall not hold the City of Renton responsible for any damages due to any finding by any state agency, court, or other other decision making body that this permit was improperly or wrongfully issued. 10 3 Lynn G tma n Plann�n /BU�Iding/Public Works Administrator Date cc' D.O.E., NW District Office Attorney General's Office City of Renton, Development Services Division City of Renton, Transportation Systems City of Renton, Utility Systems Applicant i i �' EXHIBITS Exhibit 1 Legal Description/Township and Range & Vicinity Map Exhibit 2 Affidavit of Legal Notice/Publications (January and February, 1992) Exhibit 3 Master Application Exhibit 4 Narrative Description Exhibit 5 Environmental Checklist Exhibit 6 Development Plans: Site Plan, Wetlands Plan Landscaping Plan Topographic map (illustrating ordinary high water mark) I Exhibit 7 Geotechnical Study i Exhibit 8 Technical Report: Flood Plains Exhibit 9 Report from the Boeing Company conceming the SSM Application Exhibit 10 Shoreline Master Program (Applicable Sections) Exhibit 11 Environmental Review Committee Threshold Determination (March, 1992) Environmental Review Committee Mitigation Document (April 16, 1992) t; Exhibit 12 Preliminary Report to the Hearing Examiner(May 16, 1992) Exhibit 13 Report From the Hearing Examiner (June 23, 1992), Exhibit 14 City Council Report (October 12, 992) i (Exhibits are on file with the City of Renton for pu'lic review). SHORELINE MANAGEMENT ACT OF 1971 AMENDED SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT APPLICATION NO. LUA 92-006 ECF; SA; SSM; V DATE RECEIVED: JANUARY 21, 1992 DATE OF PUBLICATION: JANUARY 24/31, 1992; FEBRUARY 2/9, 1992 DATE APPROVED: OCTOBER 13, 1992 DATE OF REMAND: MARCH 29, 1993 DATE OF ISSUANCE OF AMENDMENT: MARCH 30, 1993 TYPE OF ACTIONS: SUBSTANTIAL DEVELOPMENT PERMIT AMENDMENT (PURSUANT TO SHORELINES HEARINGS BOARD ORDER) This action was taken on the following application: APPLICANT: The Boeing Company PROJECT: Boeing Commercial Airplane Company Customer Services Training Center (BCAC - CSTC) LOCATION OF PROPOSAL: Property is located between Longacres Drive on the west and Oakesdale Avenue (if extended) on the east ; it is located south of 1-405 and north of SW 19th Street (if extended). LEGAL DESCRIPTION; See Exhibit 1 SEC-TWN-R: See Exhibit 2 WITHIN SHORELINES OF: Springbrook Creek STATE SHORELINE OF SIGNIFICANCE: NO. The site is adjacent to an area designated as a "shoreline of the state"; it is not designated as a shoreline of"statewide significance." ENVIRONMENT DESIGNATION: Urban Designation (SMP 5.04.03) APPLICABLE MASTER PROGRAM: City of Renton Shoreline Master Program DEVELOPMENT DESCRIPTION: The Boeing Company has obtained a Substantial Development Permit (dated October 13, 1992) related to the development of an approximately 51.7 acre site with a 633,242 square foot training center (CSTC) and related upland and shorelands amenities. (See Shorelines Substantial Development Permit, dated October 13, 1992 and incorporated for reference herein, for complete, detailed description of the project). i APPLICABLE MASTER PROGRAM: The initial Substantial Development Permit (dated October 13, 1992), listed those sections of the Shorelines Master Program considered to be applicable to the Boeing CSTC development. Except as herein amended, the Shorelines Substantial Development Permit (File No. 006-92) dated October 13, 1992, issued to The Boeing Company for the Boeing Commercial Airplane - Customer Services Training Center project remains unchanged. AMENDMENT TO THE SHORELINES SUBSTANTIAL DEVELOPMENT PERMIT: In compliance with the order of the Shorelines Hearing Board (SHB Nos. 92-52 and 92-53), dated March 29, 1993, the following conditions are added to the Shorelines Substantial Development Permit, dated October 13 1992, 1. The private trails in or adjacent to wetland areas marked on Appendix A (SHB Report 92-052/92- 053 and Exhibit 3 herein) shall be eliminated. This condition does not prohibit access for normal maintenance and repair. 2. The planting scheme shall include native trees suitable by size and type for raptor perching. 3. Twenty public parking spaces shall be designated in the northeast corner of the CSTC parking lot. Access shall be provided from these spaces to the public trail and shall be marked by appropriate signs. 4. The public access trail shall be elevated from the ground, shall be constructed of wood, shall not involve the use of polluting preservatives, and shall be ramped for access by the disabled. The requirements of this condition do not apply to private trails. The applicant is hereby granted a period of thirty (30) days from the date of the issuance of this Shoreline Hearings Board Order (March 29, 1993) to provide site plans illustrating compliance with the above-listed conditions. Lynn A`Gutt lann, Administrator bate 1 cc:,\f /Shoreli es Hearing Board � / DOE, NW District Office Office of the Attorney General City of Renton, Development Services Division City of Renton, Transportation Systems City of Renton, Utility Systems The Boeing Company, Applicant Roger Leeds, Attorney at Law for ACRES, Appellant Christopher Clifford, Appellant SHORELINE MANAGEMENT ACT OF 1971 AMENDED SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT (AMENDMENT 2) APPLICATION NO. LUA 92-006 ECF; SA; SSM; V DATE RECEIVED: JANUARY 21, 1992 DATE OF PUBLICATION: JANUARY 24/31, 1992; FEBRUARY 2/9, 1992 DATE APPROVED: OCTOBER 13, 1992 DATE OF REMAND No. 1: MARCH 29, 1993 DATE OF ISSUANCE OF AMENDMENT No. 1: MARCH 30, 1993 DATE OF REMAND No. 2: MAY 18, 1993 DATE OF ISSUANCE OF AMENDMENT No. 2: JULY 15, 1993 TYPE OF ACTIONS: SUBSTANTIAL DEVELOPMENT PERMIT AMENDMENT (PURSUANT TO KING COUNTY SUPERIOR COURT ORDER OF JULY 14, 1993; CONSOLIDATED CAUSE [No. 93-2-1053-1]) This action was taken on the following application: APPLICANT: The Boeing Company PROJECT: Boeing Commercial Airplane Company Customer Services Training Center(BCAC - CSTC) LOCATION OF PROPOSAL: Property is located between Longacres Drive on the west and Oakesdale Avenue (if extended) on the east ; it is located south of 1-405 and north of SW 19th Street (if extended). LEGAL DESCRIPTION; See Exhibit 1 SEC-TWN-R: See Exhibit 2 WITHIN SHORELINES OF: Springbrook Creek STATE SHORELINE OF SIGNIFICANCE: NO. The site is adjacent to an area designated as a "shoreline of the state"; it is not designated as a shoreline of"statewide significance". ENVIRONMENT DESIGNATION: Urban Designation (SMP 5.04.03) APPLICABLE MASTER PROGRAM: City of Renton Shoreline Master Program DEVELOPMENT DESCRIPTION: The Boeing Company has obtained a Substantial Development Permit (dated October 13, 1992) related to the development of an approximately 51.7 acre site with a 638,242 square foot training center(CSTC) and related upland and shorelands amenities. (See Shorelines Substantial Development Permit materials dated October 13, 1992 for complete, detailed description of the project). APPLICABLE MASTER PROGRAM: The initial Substantial Development Permit (dated October 13, 1992) and the initial Amended Shoreline Substantial Development Permit (dated March 30, 1993), listed those sections of the Shorelines Master Program considered to be applicable to the Boeing CSTC development. AMENDMENT No. 2 TO THE SHORELINES SUBSTANTIAL DEVELOPMENT PERMIT: In compliance with the order of King County Superior Court (Cause No. 93-2-1053-1), dated July 14, 1993, the following conditions are added to the Shorelines Substantial Development Permit, dated October 13 1992 (and amended initially on March 30, 1993): 1. The City of Renton allows construction activities for the Boeing Customer Services Training Center to resume and allows Boeing to construct anywhere on the site, except as specifically limited by the order of the King County Superior Court. (Cause No. 93-2-1053-1). Under this Amended Permit, development of this project shall be undertaken according to terms and conditions, based upon decisions and recommendations made pursuant to the Shorelines Substantial Development Permit application, as follows: 1. Environmental Review Committee reports (as adopted March 2, 1992 and amended April 16, 1992) 2. Hearing Examiner Report (June 26, 1992) 3. City Council Report (October 12, 1992) This Amended Permit is granted pursuant to the Shoreline Management Act of 1971 and pursuant to the following: 1. The issuance of a license under the Shoreline Management Act of 1971 shall not release the applicant from compliance with federal, state and other permit requirements. 2. The permit may be rescinded pursuant to Section 14 (7) of the Shoreline Management Act of 1971, in the event the permittee fails to comply with any condition hereof. Except as herein amended, the Shorelines Substantial Development Permit (File No. 006-92) dated October 13, 1992 (and amended March 30, 1993), to The Boeing Company for the Boeing Commercial Airplane- Customer Services Training Center project remains unchanged as issued. Lynn A.\Guttm'ann, Administrator Da e } cc: Shorelines Hearing Board DOE, NW District Office Office of the Attorney General City of Renton, Development Services Division City of Renton, Transportation Systems City of Renton, Utility Systems The Boeing Company, Applicant Roger Leeds, Attorney at Law for ACRES, Appellant Christopher Clifford, Appellant RECEIVED q/a DEPARTMENT OF THE ARMY I SEATTLE DISTRICT. CORPS OF ENGINEERS OCT G J P.O. BOX 3755 SEATTLE, WASHINGTON 9 8 1 24-225 5 REPLY TO \' ATTENTION OF regulatory Branch _ QCT Ms. Lori Pitzer The Boeing Company Post Office Box 3707, MS 6Y-50 Seattle, Washington 98124-2207 Reference: OYB-4-014493 The Boeing Company Dear Ms. Pitzer: This responds to your referenced proposal to place fill and regrade 1 .66 acres of wetlands for Boeing's Customer Services Training Center at Longacres Race Track. The site is located in Sec. 24, T. 23 N. , R. 4 E. , Renton, King County, Washington. The wetlands onsite are considered to be above the headwaters and tributary to Springbrook Creek. We confirmed the wetland locations and boundary delineations in correspondence to you on June 18, 1992. Department of the Army regulations dated November 22, 1991, authorize certain activities under nationwide permits, provided the enclosed conditions are met. Nationwide Permit 26 (Part 330, Appendix A) authorizes discharges of dredged or fill material into nontidal rivers, streams, and their lakes and impoundments, including adjacent wetlands, that are located above the headwaters where the average annual flow is less than 5 cubic feet per second. The entire text of Nationwide Permit 26 is enclosed. In addition to the enclosed national conditions for nationwide permits the following specific conditions will apply to this project: 1. The Boeing Customer Services Training Center Wetland Mitigation Report dated June 1992 is to be implemented with the project. 2. Planting of non-native plant species is to be avoided. Planting of native species that create a diverse wetland/upland community that provides cover and food for wildlife should be an objective. 3. Daily work in the excavation area - within the boundaries of the existing wetlands - must occur so that no stockpiling of material is allowed within the excavated area. Stockpiling material within areas designated to receive fill in the final design is authorized. 4. A monitoring plan will be approved by the Corps prior to beginning work. Monitoring for mitigation will be for a five year period after planting �.., begins. Monitoring reports are to be provided at a minimum frequency of one -2- per year beginning one year after site preparation. The plan must include contingencies for failure of plantings, inappropriate hydrology or failure to provide the stated habitat values. Monitoring will be extended if mitigation fails to meet plan objectives. The requirements stated here will be modified if a similar monitoring plan is required by State 401 Certification. The State of Washington has partially denied water quality certification and Coastal Zone Management (CZM) consistency concurrence for Nationwide Permit 26. Consequently, your project is denied without prejudice until you obtain water quality certification and CZM concurrence. Any conditions of certification and CZM concurrence are your certification and concurrence. ' You may proceed with the work upon your receipt of the certification and concurrence. This verification will be valid for two years from the date of this letter or until the nationwide permit is modified, reissued, or revoked. If additional placement of fill in waters of the United States, including wetlands, is contemplated on this site, you must contact us concerning any additional permit requirements. While you need no further authorization from us, you must still comply with other Federal, State and local requirements which may pertain to the work. Please contact Mr. T. J. Stetz should you have any questions or desire clarification. Sincerely, i Robert H. Martin Chief, Processing Section Enclosures Copies Furnished: US Fish and Wildlife Services US Environmental Protection Agency Washington State Department of Ecology 26. HEADWATERS AND ISOLATED WATERS DISCHARGES. Discharges of dredged or fill material into headwaters and isolated waters provided: A. The discharge does not cause the loss of more than 10 acres of waters of the United States; b. The permittee notifies the District Engineer if the discharge would cause the loss of waters of the United States greater than one acre in accordance with the "Notification" general condition. For discharges in special aquatic sites, including wetlands, the notification must also include a delineation of affected special aquatic sites, including wetlands. (Also see 33 CFR 330.1(e) ) ; and C. The discharge, including all attendant features, both temporary and permanent, is part of a single and complete project. For the purposes of this nationwide permit, the acreage of loss of waters of the United States includes the filled area plus waters of the United States that are adversely affected by flooding, excavation or drainage as a result of the project. The ten-acre and one-acre limits of NWP 26 are absolute, and cannot be increased by any mitigation plan offered by the applicant or required by the DE. Subdivisions: For any real estate subdivision created or subdivided after October 5, 1984, a notification pursuant to subsection (b) of this nationwide permit is required for any discharge which would cause the aggregate total loss of waters of the United States for the entire subdivision to exceed one (1) acre. Any discharge in any real estate subdivision which would cause the aggregate total loss of waters of the United States in the subdivision to exceed ten (10) acres is not authorized by this nationwide permit; unless the DE exempts a particular subdivision or parcel by making a written determination that: (1) the individual and cumulative adverse environmental effects would be minimal and the property owner had, after October 5, 1984, but prior to January 21, 1992, committed substantial resources in reliance on NWP 26 with regard to a subdivision, in circumstances where it would be inequitable to frustrate his investment-backed expectations, or (2) that the individual and cumulative adverse environmental effects would be minimal, high quality wetlands would not be adversely affected, and there would be an overall benefit to the aquatic environment. Once the exemption is established for a subdivision, subsequent lot development by individual property owners may proceed using NWP 26. For purposes of NWP 26, the term "real estate subdivision" shall be interpreted to include circumstances where a landowner or developer divides a tract of land into smaller parcels for the purpose of selling, conveying, transferring, leasing, or developing said parcels. This would include the entire area of a residential, commercial or other real estate subdivision, including all parcels and parts thereof. (Section 404) Regional Conditions - 1. The discharge of dredged or fill material which would cause the loss of greater than 2 acres is not authorized by this NWP. An individual permit application must be submitted for discharges greater than 2 acres. 2. The discharge is not authorized in documented habitat for state listed endangered, threatened, or sensitive animal species. 401 Certification - NWP partially denied without prejudice. An individual 401 Certification or demonstration of State waiver of such certification to the District Engineer is required for projects affecting more than 1 (one) but no more than 2 (two) acres of headwaters or isolated waters. CZM Consistency Determination - NWP partially denied without prejudice for the same limits as the 401 Certification. An individual CZM Consistency Determination is required from the State in those cases for projects located in counties within the coastal zone. Special Note - 1. Notification and individual 401 Certification and CZM are not required for fills affecting 1 (one) acre or less provided regional condition #2 is complied with along with the nationally imposed NWP conditions listed at the end of this PN. 2. Notification is required for fills affecting more than 1 (one) acre, but less than 2 (two) acres of waters of the U.S. NATIONWIDE PERMIT CONDITIONS General Regional Condition for the State of Washington applicable to all nationwide permits (NWP) : Any activity or work authorized under these NWP shall not adversely impact onsite mitigation or restoration efforts. 33 CFR Part 330, Appendix A, Section C. GENERAL CONDITIONS: The following general conditions must be followed in order for any authorization by a NWP to be valid: 1. Navigation. No activity may cause more than a minimal adverse effect on navigation. 2. Proper maintenance. Any structure or fill authorized shall be properly maintained, including maintenance to ensure public safety. 3. Erosion and siltation controls. Appropriate erosion and siltation controls must be used and maintained in effective operating condition during construction, and all exposed soil and other fills must be permanently stabilized at the earliest practicable date. 4. Aquatic life movements. No activity may substantially'disrunt the movement of those species of aouatic life indigenous to the waterbody, including those species which normally migrate through the area, unless the activity's primary purpose is to impound water. 5. Equipment. Heavy equipment working in wetlands rust be placed on mats or other measures must be taken to minimize soil disturbance. 6. Regional and case-by-case conditions. The activity must comply with any regional conditions which may have been added by the Division Engineer (see 33 CFR 330.4(e)) and any case specific conditions added by the Corps of Engineers (Corps). 7. Wild and scenic rivers. No activity may occur in a component. of the National Wild and Scenic River System; or in a river officially designated by Congress as a "study river" for possible inclusion in the system, while the river is in an official study status. Information on Wild and Scenic Rivers may be obtained from the National Park Service and the U.S. Forest Service. 8. Tribal rights. No activity or its operation may impair reserved tribal rights, including, but not limited to, reserved water rights and treaty fishino and huntina rights. 9. Water quality certification. In certain States, an individual State water quality certification must be obtained or waived (see 33 CFR 330.4(c)). 10. Coastal zone management. In certain States, an individual State coastal zone manaaement consistency concurrence must be obtained or waived (see 33 CFR 330.4(d)) . 11. Endangered species. No activity is authorized under any NWP which is likely to jeopardize the continued existence of a threatened or endangered species or a species proposed for such designation, as identified under the Federal Endanoered Species Act, or which is likely to destroy or adversely modify the critical habitat of such species. Nonfederal permittees shall notify the District Engineer if any listed species or critical habitat might be affected or is in the vicinity of the project and shall not begin work on the activity until notified by the District Engineer that the requirements of the Endangered Species Act have been satisfied and that the activity is authorized. Information on the location of threatened and endangered species and their critical habitat can be obtained from the U.S. Fish and Wildlife Service and National Marine Fisheries Service (USFWS/NMFS) (see 33 CFR 330.4(f)) . 12. Historic properties. No activity which may affect historic properties listed, or eligible for listing, in the National Register of Historic Places is authorized, until the District Engineer has complied with the provisions of 33 CFR 325, Appendix C. The prospective Dermittee must notify the District Engineer if the authorized activity may affect any historic prooerties. listed, determined to he eligible, or which the prospective permittee has reason to believe may be eligible for listing on the National Register of Historic Places, and shall not begin the activity until notified by the District Engineer that the requirements of the National Historic Preservation Act have been satisfied and that the activity is authorized. ' Information on the location and existence of historic resources can be obtained from the State Historic Preservation Office (SHPO) and the National Register of Historic Places (see 33 CFR 330.4(g)) . 13. Notification. (a) Where required by the terms of the NWP, the prospective permittee must notify the District Engineer as early as possible and shall not begin the activity: (1) Until notified by the District Engineer that the activity may proceed under the NWP with any special conditions imposed by the District or Division Engineer; or (2) If notified by the District or Division Engineer that an individual permit is required; or (3) Unless 30 days have passed from the District Engineer's receipt of the notification and the prospective permittee has not received notice from the District or Division Engineer. Subsequently, the permittee's right to proceed under the NWP may be modified, suspended, or revoked only in accordance with the procedure set forth in 33 CFR 330.5(d)(2) . : . 2 (b) The notification must be in writing and include the following information and any required fees: (1) Name, address, and telephone number of the prospective permittee; (2) Location of the proposed project; (3) Brief description of the proposed proiect; the project's purpose; direct and indirect adverse environmental effects the project would cause; any other NWP(s) , regional general permit(s) , or individual permit(s) used or intended to be used to authorize any part of the proposed project or any related activity; (4) Where reouired by the terms of the NWP, a delineation of affected special aquatic sites, including wetlands; and (5) A statement that the prospective permittee has contacted: (i) The USFWS/NMFS regarding the presence of any federally listed (or proposed for listing) endangered or threatened species or critical habitat in the permit area that may be affected by the proposed project; and any available information provided by those agencies. (The prospective permittee may contact Corps District Offices for USFWS/NMFS agency contacts and lists of critical habitat.) (ii) The SNPO reoarding the presence of any historic properties in the permit area that may be affected by the proposed project; and the available information, if any, provided by that agency. (c) The standard individual permit application form (Form ENG 4345) may by used as the notification but must clearly indicate that it is a predischarge notification (PON) and must include all of the information required in (b)(1)-(5) of General Condition 13. (d) In reviewing an activity under the notification procedure, the District Engineer will first determine whether the activity will result in more than minimal individual or cumulative adverse environmental effects or will be contrary to the public interest. The prospective permittee may, at his option, submit a proposed mitigation plan with the predischarge notification to expedite the process and the District Engineer will consider any optional mitigation the applicant has included in the proposal in determining whether the net adverse environmental effects of the proposed work are minimal. The District Engineer will consider any comments from Federal and State agencies concerning the proposed activity's compliance with the terms and conditions of the NVIP and the need for mitigation to reduce the proiect's adverse environ- mental effects to a minimal level. The District Engineer will upon receipt of a notification provide immediately (e.g. , facsimile transmission, overnight mail, or other expeditious manner) a copy to the appropriate offices of the USFWS, State natural resource or water quality agency, EPA, and, if appropri- ate, the NMFS. With the exception of NWP 37, these agencies will then have 5 calendar days from the date the material is transmitted to telephone the 3 District Engineer if they intend to provide substantive, site-specific comments. If so contacted by an agency, the District Engineer will wait an additional 10 calendar days before making a decision on the notification. The District Engineer will fully consider agency comments received within the specified timeframe, but will provide no response to the resource agency. The District Engineer will indicate in the administrative record associated with each notification that the resource agencies' concerns were considered. Applicants are encouraged to provide the Corps multiple copies of notifica- tions to expedite agency notification. If the District Enqineer determines that the activity complies with the terms and conditions of the NWP and that the adverse effects are minimal, he will notify the permittee and include any conditions he deems necessary. If the District Engineer determines that the adverse effects of the proposed work are more than minimal, then he will notify the applicant either: (1) that the pro iect does not qualify for authorization under the NWP and instruct the applicant on the procedures to seek authorization under an individual permit; or (2) that the project is authorized under the NWP subject to the applicant's submitting a mitigation proposal that would reduce the adverse effects to the minimal level. This mitigation proposal noist be approved by the District Engineer prior to commencing work. If the prospective permittee elects to submit a mitigation plan, the District Engineer will expeditiously review the proposed mitigation plan, but will not commence a second 30-day notification procedure. If the net adverse effects of the project (with the mitigation proposal) are deter- mined by the District Engineer to be minimal, the District Engineer will provide a timely written response to the applicant informing him that the project can proceed under the terms and conditions of the MVP. (e) Wetlands delineations: Wetland delineations must be prepared in accordance with the current method required by the Corps. The permittee may ask the Corps to delineate the special aquatic site. There may be some delay if the Corps does the delineation. Furthermore, the 30-day period will not start until the wetland delineation has been completed. (f) Mitigation: Factors that the District Engineer will consider when determining the acceptability of appropriate and practicable mitigation include, but are not limited to: ' (1) To be practicable, the mitigation must be availahle and capable of beino done considering costs, existing technology, and logistics in light of overall project purposes; (2) To the extent appropriate, permittees should consider mitigation banking and other forms of mitigation including contributions to wetland trust funds, which contribute to the restoration, creation, replacement, enhancement, or preservation of wetlands. Furthermore, examples of mitigation that may be appropriate and practicable include but are not limited to: reducing the size of the proiect; establishino buffer zones 'to protect aquatic resource values; and replacing the loss of aquatic resource values by creating, restoring, and enhancing similar func- tions and values. In addition, mitigation must address impacts and cannot be 4 used to offset the acreage of wetland losses that would occur in order to meet the acreage limits of some of the NWP's (e.g. , 5 acres of wetlands cannot be created to change a 6-acre loss of wetlands to a 1-acre loss; however, the 5 created acres can be used to reduce the impacts of the 6-acre loss) . SECTION 404 ONLY CONDITIONS: In addition to the general conditions, the following conditions apply only to activities that involve the discharge of dredged or fill material and must be followed in order for authorization by the NWP's to be valid: 1. Water supply intakes. No discharge of dredged or fill material may occur in the proximity of a public water supply intake except where the discharge is for repair of the public water supply intake structures or adjacent bank stabilization. 2. Shellfish production. No discharge of dredged or fill material may occur in areas of concentrated shellfish production, unless the discharge is directly related to a shellfish harvesting activity authorize'd by NN P 4. 3. Suitable material. No discharoe of dredged or fill material may consist of unsuitable material (e.q. , trash, debris, car bodies, etc.) and material discharged must be free from toxic pollutants in toxic amounts (see Section 307 of the Clean Water Act) . 4. Mitigation. Discharges of dredged or fill material into waters of the United States must be minimized or avoided to the maximum extent practicable at the protect site (i.e. , onsite) , unless the District Engineer has approved a compensation mitigation plan for the specific regulated activity. 5. Spawning areas. Discharges in spawning areas during spawning seasons must be avoided to the maximum extent practicable. 6. Obstruction of high flows. To the maximum extent practicable, discharges must not permanently restrict or impede the passage of normal or expected high flows or cause the relocation of the water (unless the primary purpose of the fill is to impound waters) . 7. Adverse impacts from impoundments. If the discharge creates an impoundment of water, adverse impacts on the aquatic system caused by the accelerated passage of water and/or the restriction of its flow shall be minimized to the maximum extent practicable. 8. Waterfowl breeding areas. Discharges into breeding areas for migratory waterfowl must be avoided to the maximum extent practicable. 9. Removal of temporary fills. Any temporary fills must be removed in their entirety_ and the affected areas returned to their pre-existing elevation. BM-7; NPDCOND :_r 5 • i i i STATE OF WASHINGTON DEPARTMENT OF ECOLOGY Mai! Stop p1/-77 • Olympia, Washington 98 504-87 1 7 • (206) 459-0000 November 16, 1992 District Engineer Department of the Army Seattle District, Corps of Engineers P.O. Box C-3755 Seattle, Washington 98124 ATTN; T. J. Stetz Regulatory Branch I RE: Corps Public Notice No, OYB-4-014493 Boeing Longacres i Dear Corps: Your public notice to authorize the above referenced activity or work has been reviewed., The proposed activity entails placing a stormwater pipeline in Springbro:ok .Creek, and tilling 1.11 acres of isolated wetlands for construction of a training facility for flight and maintenance crews of aircraft built by the Boeing C6mpany. Mitigation for the wetland fill consists of creating and restorin 14.99 acres of wetlands on the site through the excavation of 3 .75 acres of wetlands and 11,24 acres of upland. On behalf. of the State of Washington, we have no objection to the issuance of the Corps of Engineers permit under section 404 of the Clean Water Act. Pursuant to Section 307(c) (3) of the Coastal Zone Management Act of 1972 as amended, !we concur with the applicant's determination that this activity or work is consistent with the approved Washington State Coastal Zone Management Program. Please note this letter does not exempt the applicant from compliance with other requirem6nts of federal, state and local agencies. Sincerely, M. F. Palko Supervisbr Environmental Review MFP:slm i CC,. DA, Shorelands t BTA '� dB STATE OF \NASHINGTON DEPARTMENT OF ECOLOGY Mail Stop PV-11 • Olympia, Washington 116504-07 t1 . (205) 459-60X November16, 1992 Boeing Commercial Airplane Group Attn: Lori Pitzer P,0. Box i3707 Seattle, !WA 98124 Re; Water Quality Certification Public Notice No. OYB-4-014493 Dear Applicant: Thank you for the information that was provided t-o us on wetland mitigation and project description. We have reviewed Lhe public notice to authorize the above referenced activity, in accordance with all pertinent rules and regular-ivnh . The proposed project entails filling 1.11 acres of isolated wetlands for construction of a training facility for flight: and maintenance crews of aircraft: built by the Boeing Company. Mitigation for the wetland fill consists of creaLing and restoring 14 .99 acres of wetlands on the site through the excavation of 3.75 acres of wetlands and 1.1. 24 acres of upland. The project also entails the construction and operation of a stormwater outfall pipe into Springbrook Creek. This agency certifies these activities comply with applicable provisions of sections301, 302 , 303, 306 , and 307 of the Federal Clean Water Act as amended, and othet appropriate requirements of State law. This certification is subject to compliance with the conditions of the attached Hydraulic Project Approval from the Department; of Fifiheries and the following: GENERAL 1. Sandra Manning at the Department of Ecology's Environmental Review Section (438-7514) or Cyd Brower at the Wetlands Section (459-6469) , shall be notified at least 72 hours before starting Uie project and project: mitigation, and again 72 hours after prvjuct: and mitigation compl.eti.on. 2. Best Management Practices (BMP's) shall be employed at the project site and mitigations sites to prevent erosion and siltation during and following construction. Construction site BMP' s are listed i.n Ecology' s Surface Water Management MaIlutil for the Puget Sound Basin. 3 . Work in or near Spr.i.ngbrook Creek and remaining wetlands will be done so as to minimize turbidity, erosion, and other water quality impacts . u Springbrook Creek shall be protected from cunstructi.on runoff by placing R. . a ;protective berm of suitable material , such as hay bales, or silt curtains, around the area of the Creek that may be affected by the construction, I Boeing, 1�ngacres Page 2 I WETLANDS MITIGATION: 4. Unless otherwise stipulated in this letter, all specifications developed for ! mitigation cited in the "Boeing Customer Service Training Center Wetland Mitigation Plan" (October 1992) prepared by Shapiro and Associates, Inc. shall be used to plan, develop and monitor and maintain the compensatory mitigation site. These plans shall be used to provide guidance in compliance monitoring and to subsequently judge the success of themitigation efforts. 5, A "rime-zero" report that includes an as-built survey shall be sent to the Department of Ecology , Cyd Brower, within 3 months of completion of t-he wetland mitigation. Any changes in the as-built from the original plan should be noted. II 6. Anysignificant changes in the grading or construction plans shall be coordinated with the Department of Ecology prior to implementation. 7. All plant substitutions shall be coordinated with the Department of Eco ogy, Substitutions must be native plant species that are coiraRon to the Green River Valley. I 8. Control of reed canary grass shall be kept to a minimum of 10% aerial cover at the end of the fifth year of monitoring or the project will not be Qonsidered successful, and additional mitigation and monitoring will be required. OUTFALL PIPE: 9. Certification of the construction of this outfall line does not authorize boe$ng to exceed any applicable State water quality standards (WAG 173- 201) or sediment quality standards (WAG 173-204) . Furthermore, nothing in this certification shall absolve Boeing or the City of Renton from lialiliry for contamination and subsequent cleanup of surface waters or sediments as a result of effluent discharged from this outfall. Certification of this stormwater outfall pipe, and any future additions or modifications to the stormwater system, is contingent on Boeing's and the Gity of Renton's compliance with all applicable and appropriate Best Management Practices for management of stormwater as specified in, but not: li14ted to, local ordinances or regulations, building permits, or enf rceable stormwater management plans. At a minimum, the project shall be :consistent with the technical guidelines contained in the 1aLest ver�ion of Ecology's Stormwater Management Manual. 10. Alt6ration or disturbance of existing bank vegetation shall be held to an abs lute minimum, and revegetation shall occur in areas where vegetation is %stroyed. i i i Boeing, Longacrea Page 3 11, All construction debris shall be properly disposed of on land in such a manner that it cannot enter into the waterway or cause water quality degradation to state water. 12 , Extrieme care shall be taken Lu prevent any petroleum products , fresh cemeint, chemicals, or other toxic or deleterious materials from entering thelwater. if an oil sheen or distressed or dying fish are observed in the , Creek during pipeline construction, the operator shall cease immediately and notify the department of such conditions. Contact Ecology's Northwest Regional Office , Spill Response at (206) 649-7000_ if you have any questions about this core-ification please contact Sandra Manning, at (206) 4,38-7514 , or for wetland specific comments contact Cyd Brower at (206) 458-6469 . Please note this certification does not- exempt, and is provisional upon compliance with other statutes and codes administered by federal, state and local. agencies. Sincere l.y i i M. F. Fallco Superviso Environmental Review i MI'P: s lm Enclosure cc: COE DOUR Shorelands, Cyd Brower EPAI SOSttle .Tack Lynch Fri�nds of the Earth, Dave Ortman I i lll=t I . Jr- tUJLuu r—tl AV. r;t.i tw LIU- _ �05 393 3093 1 1 O 3. 92 O � 44 .aiZ O 1 W ex Lee'der NO.0 oary:o U ,No. slr: �.ori �rt �� 1A7�ltiop j OpR(le,l I, ox a Ttal19ponR11&9(0 o. 11t 0. o. en+ +tQ1n Q DNtm Q Retum' rd for pi&up f : w reLaa • ' WP "PRoVaL R.C.W. 73 .10 .100 O oarst Administration dministration 11 idp. R.O.W. 75.*0. 102 Oyvi1r Wash" ton 4d58i• n —gust 7 F 1992 (46i) T5�•6W 14PMTMW W Pll 111148 (awtioant should rater tt athis data in att oorrespoetidanoe> FIRST ib YACT ► C ? 5]CUTROL 38$6--02 Boeing Cpmmeraial Airplane 393-7098 Post oft os Box 3707 , I+J$ 6Y-50, ATTNs Lars Pitz q �A• 0005 Q*M i re i !iJ/Ts 98124- 207 44 WWA 11 TYPE 0� PRO !C TER� rin brook creek T� �vvr RRmove► a — ap-- TiR VICTIM TppSH:P C W^WT Y_ buttall Pipe 24 23N 04EWM King e _ .... QUA 1 THIS PPAJEGT MY maim �AND MttST RE CWLFTED OT T= 2 LZ1LT'!A�' Janua 1 1993 September 151 1993 8PP I1 M!!uli FAf1YI5tOk5 (N! Rrvp�FflP,Sint nr AMMA. NOTZi Th d is a tima aviaion for the Hydraulic Pro act App i m Tal ritten on Aprif 23 , 19 2. Xs, Lax P tzer, arnti An trator K Lor :$aein rimm4r ial Allan Group, ragueSted t * reviil on to the1Hydra l c Projeat Rp� oval (HPA) in her Auquat 3 , 1992 letter This HF')L is wr ttan with thB� understanding t at he stormwater �+ariV'eyanGe ays,titan consructed and maintained am shown on rplans s m tte w your letter dated February 13 , 1992 . 1 . The coil ruction of the outrall shall only be accomplished w an the rat. s rhe. a rodipQtad to be dry enough to ensure low a ream flows u7C ng 'Conuatiori. 1 . k vsi Iva a paratidn shall be maintain between tli a work area a n I th flowing str am at all Imes. Th s may require the use of sandbag berm or similar mechanism. r 3 . piN►�nt a as.11 not Inter or o eratQ within thh flowing stream. All rXialli a aaoosap �.eche►d wSth equipment warkTng from tap or th® �!k. t . outs ll shall be a orad as noosswary t p ov+wnti a onion or r`eaIRb• aaour. The ao*Zent o f armor ma or al shah not roauce e s eam arows-s&otion or anpad ty. 5. raor to 1.al shall conais: or an lax rock of sufficient Rita �.. W'WW)W�r „ n) *r'!o duri na r i rtort� events. ` X . 0. 92 i 01 44 AID 11O3 RYDRAULIC FRa.TXQT APFROVAL R C.N. 7 5.2 0 . 10 0 oBFARTtt�iMt of r t tutatt ett R.G�N. 7sl. Q. l,Oa Ow"rat khtn€strotim Bldg. O(Ml e, Washlrqton 9004 Bt►ART1rItT ftMl!#IidB Q 4u9ust 71 3.9!D2 __ _ teod) y5 -6650 (amltctnt should rtftr to this dat,s In all eorrvswx tract) PAW" Z ►M$ ACT MWO(a) COHTIl4L IT ing Commercial Airplane 393-7098 MT3886-02 [ w'')5pringbrook Creak v WR€R 09,0005 6. axy atfort hall be employed to prevent silt-laden water from 1�Btvlztg the Mite. 7 . outfa 1 sjiml� be constrructed in r� �tnnBar �2t� wi�l prot�rat •x ti nq aril[ vaq tat on. yy v a the verge on " am , l • r -eatabl sherd immedia a upon camp of on of the wort an' the aver ban . IACkTIOK t B- ast of Longacrea Race Track nbt81. 004 i R[Y 10/1W46 NOTE: This map is for orientation purposes only Oo and is not intended for jurisdictional or site planning Nf1 0 o r� �_ purposes. A more accurate map of the wetlands can Qo result from a survey by a qualified land surveyor 0 0 of the flagged wetland edge. d �((^ Q S VYlows -_-_- a _-_----_____-__- , �_ -P Af1KING o /� \---- -------------- --------------- CD E=j qqc L�—.J �IIJAGE D t �q \ WETLAND 1 Y I' \ "� W ETL A N D `•:\ / f ❑ I / Ax '> WETLAND ; 0 1 �..•�^'� t aaQ � FIGURE 4 o I WETLANDS MAP SITE BOUNDARY i / 0 150 300 Ft PARK CSTC SFAPIRO& UNIFIED F�DERALRMETHOD (198) ASSMATER Three wetlands were delineated in the study area according to criteria expressed in the Unified Federal Method. The wetlands range from approximately 1 to 12 acres in size,with a total area of about 14.5 acres. The largest wetland occurs in the main racetrack infield portion of the study area. The other wetlands occur in and along the floodplain of Springbrook Creek and in the field directly west of the creek No wetlands were found in the portion of the CSTC study area north of S.W. 16th Street. Springbrook Creek is directly east of the study area. This stream is recognized by King County as a Class 2 stream with salmonids and as shoreline under the Shoreline Management Act (SMA) by the City of Renton and the Department of Ecology. Wetlands within 200 feet of the mean high water mark elevation of a stream with identified shoreline are considered associated wetlands under the provisions of the SMA. Wetland X lies along Springbrook Creek and would be considered associated with identified shoreline. All wetlands on the Longacres Park CSTC site contain emergent grass-forb vegetation communities. Vegetation in the swale and mound areas has been intensively managed as a lawn, while the vegetation along the ditch and stream portions of the wetlands has retained a more natural appearance. Wetland soils are varied, but most are hydric because of low chromas and the presence of mottles. Hydric and/or saturated and inundated soils along with the presence of rhizospheres,were considered evidence of wetland hydrology in the wetlands. Wetland X occupies about 1.5 acres in and along the Springbrook Creek floodplain,while Wetland Y occupies approximately 1 acre in the field to the west of the creek Wetland Y was considered to be a wetland under the problem area definition of the Unified Federal Method. Wetland Z covers approximately 12 acres of the main racetrack infield. 18 NOTE: This map Is for orientation purposes only 0 0_ and Is not Intended for jurisdictional or site planning , o o purposes. Amore accurate map of the wetlands can o result from a survey by a qualified land surveyor ff. o Q of the flagged wetland edge. S El --- ---PARKING----- X. Z. WETLAND 13 WETLAND / °<'?`t ::;: WETLAND p '> A z ? f' / t`< �>:�;•::;r.;g::..•::.�:r::.�::::,�?f:•::•>:•:»t';:.; WETLAND •,�;:; : ''t`•• >>%'• {WETLAND%`::::::::•;::: E `.}$. 1"/ . ' Z FIGURE 4 n WETLANDS MAP SITE BOUNDARY 0 150 300 Ft CSTC U.S. ARYPS OF ENGINEERS SHAPIRO& WETLAND DELINEAOTION METHOD (1987) ASSMATFSa 4/92 the racetrack infield. Wetland E occurs in the field to the west of Springbrook Creek and is about 0.1 acre in size, while Wetland F occupies about 1.5 acres in and along the floodplain of the creek. Table 10: SUMMARY OF WETLAND ACREAGE AT THE CSTC SITE IN RENTON, WASHINGTON Acres in Acres outside Total Wetland Study area Study Area Acres A 0.316 0.079 0.395 B 2.86 2.32 5.18 C 1.23 0.0 1.23 D 0.43 0.0 0.43 E 0.016 0.083 0.099 F 1.47 0.0 1.47 19 1 I/ SHAPIRO& Memorandum ASS(ELAJESU U DATE: 1/29/9 ,n' 1 The Smith Tower O Y" Suite 1400 TO: Ms. tier,Boeing Commercial Airplane Group 506 Second Avenue Seattle FROM: M OelSenior Vice President Shapiro and Associates Washington 98104 Tel: 206/624.9190 RE: C ation of Longacres Park Wetland Delineations Fax: 206/624. 1901 CC: Ms. M Lynn Meyer,City of Renton The purpose of ' memo is to clarify the results of the wetlands delineations conducted by Shapiro and Associ tes at the Longacres Park site,on behalf of the Boeing Company, on September 10,16, and 17, and November 4, 5, and 6, 1991. During our meeting on January 27, 1992 questions arose from Ms.Meyer regarding apparent discrepancies in Sample Plot data and determination of Wetland/drainage ditch Z included in the Wetland Determination for Longacres Park Customer Service Training Center Project reports. The Sample Plots in question were numbers 12 and 18. A question was raised regarding the wetland hydrology criteria being positive for both Plots in the 1989 delineation report and negative for both in the 1987 delineation report. In actuality no discrepancy exists. The rationale behind this "apparent discrepancy" is found in the method differences between the 1987 Corps of Engineers Delineation Method, and the 1989 Unified Federal Method. The 1989 Unified Federal Method states in Section 3.37, Item 11 that"In the absence of the above [wetland hydrology] indicators,if an area meets the field indicators for hydric soils and there is no indication of significant hydrologic modification, then it can be assumed that the area meets the wetland hydrology criterion." In contrast,the 1987 Corps of Engineers Method does not allow for wetland hydrology determinations to be made based on the presence of hydric soils. It is for this reason that the two reports differ. Sample Plots number 14 and 17 also differ in reported wetland hydrology because of the difference in methods described above. The discrepancy in Sample Plot 18 in regard to the vegetation criteria is also explained by the differences in the methods used. The 1989 Unified Federal Method contains a problem area definition that allows for wetlands that contain 50% to 75% non-hydrophytic (plants that do not usually grow in wetlands) vegetation. The 1987 Corps of Engineers Method does not define what constitutes a problem area wetland. Sample Plots 18, 14, and 13 were considered to contain hvdronhytic vegetation ender the 10-8Q iTn;fe.i Federal Method problem area definition, and considered to contain non-hydrophytic vegetation under the 1987 Corps of Engineers Method. The apparent discrepancy for Wetland/drainage ditch Z pertains to differences in definitions used by the City of Renton and the Corps of Engineers. A change in the delineation of Wetland/drainage ditch Z in the 1989 Unified Federal Method report would occur according to Section 14,Item 54 of The City of Renton Wetlands Management Ordinance Eighth Draft 1120/92 which states that "drainage ditches are not considered regulated wetlands"; however,under the Corps of Engineers regulations,the drainage ditch system is a regulated wetland and would remain Wetland A as reported in the report using the 1987 Corps of Engineers Method. A total area of 0.37 acres of Wetland/drainage ditch Z would be excluded from Jurisdictional regulation by the City of Renton and be considered a non-regulated wetland. The remaining 11.6 acres of Wetland Z would be considered regulated wetland. We intend to amend our report to show this change unless directed otherwise. I hope that this memo clarifies any questions that you have. If you have any additional questions, please do not hesitate to contact.me or Chris Wright. "Wool 47t�,51 Ade- 4d fi'�vvk- d4e+ oval k4,je � ��IQ�Ln � V474-� Wocorl ,fit 'A4 ecj Z161A ca SyS''1-� C._ �'� l�lowld �i�� 1►��oa,e,��- - �i.r C.yr►�,¢lt,��r,�i,� 0�f °`�' '�* lei ,�� (�'�2 , ���,,hal fr-P�2.��^h J • �w+.ti.er� ��'�u.� G�bP� jYl�,�, f6 - �! 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