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HomeMy WebLinkAboutSEPA E06-018 - DECKER BRAD / SC4 LIMITED LIABILITY COMPANY - SC5 BULK RETAIL BUILDINGSC5 RETAIL Brad Decker 17305 SOUThCENTER PY E06 -018 City of Tukwila Department of Community Development / 6300 Southcenter BI, Suite 100 / Tukwila, WA 98188 / (206)431 -3670 DETERMINATION OF NON - SIGNIFICANCE (DNS) File Number: E06-018 Applied: 09/27/2006 Issue Date: 11/07/2006 Status: APPROVED Applicant: BRAD DECKER Lead Agency: City of Tukwila Description of Proposal: SC5 Bulk Retail Building Location of Proposal: Address: Parcel Number: Section/Township/Range: 17305 SOUTHCENTER PY TUKW 2623049024 The City has determined that the proposal does not have a probable significant adverse impact on the environment. An environmental impact statement (EIS) is not required under RCW 43.21c.030(2) (c). This decision was made after review of a completed environmental checklist and other information on file with the lead agency. This information is available to the public on request. This DNS is issued under WAC 197 -11- 340(2). Comments must be submitted by Aiov, a 7, a.O06, . The lead agency will not act on this proposal for 14 days from the date below. 1 Zoos Steve Lancaster, Responsible Official Date City of Tukwila 6300 Southcenter Blvd Tukwila, WA 98188 (206)431 -3670 Any appeal shall be linked to a specific governmental action. The State Environmental Policy Act is not intended to create a cause of action unrelated to a specific governmental action. Appeals of environmental determinations shall be commenced within the time period to appeal the governmental action that is subject to environmental review. (RCW 43.21C.075) doc: DNS E06 -018 Printed: 11 -06 -2006 FEDERAL AGENCIES ( ) U.S. ARMY CORPS OF ENGINEERS () FEDERAL HIGHWAY ADMINISTRATION ( ) DEPT OF FISH & WILDLIFE () U.S. ENVIRONMENTAL PROTECTION AGENCY () U.S. DEPT OF H.U.D. () NATIONAL MARINE FISHERIES SERVICE WASHINGTON STATE AGENCIES () DEPT OF SOCIAL & HEALTH SERV. () DEPT OF ECOLOGY, SHORELAND DIV (4 DEPT OF ECOLOGY, SEPA DIVISION' () OFFICE OF ATTORNEY GENERAL • SEND CHKLIST W/ DETERMINATIONS • SEND SITE MAPS WITH DECISION () OFFICE OF ARCHAEOLOGY ( ) TRANSPORTATION DEPARTMENT () DEPT NATURAL RESOURCES • . () OFFICE OF THE GOVERNOR TRADE () DEPT OF FISHERIES WILDLIFFEO «C DEV. KING COUNTY AGENCIES () BOUNDARY REVIEW BOARD () FIRE DISTRICT #11 () FIRE DISTRICT #2 () K.C. WASTEWATER TREATMENT DIVISION () KC. DEPT OF PARKS & REC () KC. ASSESSORS OFFICE ( ) TUKWILA SCHOOL DISTRICT () TUKWILA UBRARY () RENTON UBRARY () KENT LIBRARY () CITY OF SEATTLE LIBRARY () OWEST ( ) SEATTLE CITY LIGHT () PUGET SOUND ENERGY () HIGHLINE WATER DISTRICT () SEATTLE WATER DEPARTMENT ( ) AT&T CABLE SERVICES SCHOOLS/LIBRARIES UTILITIES CITY AGENCIES ( ) KENT PLANNING DEPT ( ) TUKWILA CITY DEPARTMENTS: () PUBLIC WORKS () FIRE () POLICE () FINANCE () PLANNING () BUILDING () PARKS & REC. () MAYOR () CITY CLERK OTHER ( ) PUGET SOUND REGIONAL COUNCIL ( ) SW K C CHAMBER OF COMMERCE ( ) MUCKLESHOOT INDIAN TRIBE ( ) CULTURAL RESOURCES PROGRAM () FISHERIES PROGRAM ( ) WILDLIFE PROGRAM () SEATTLE TIMES ( ) SOUTH COUNTY JOURNAL P: ADMINISTRATIVE IFORMS1CHI(LIST.DOC ( ) HEALTH DEPT () PORT OF SEATTLE (.) KC. DEV & ENVIR SERVICES-SEPA INFO CNTR ( ) KC. TRANSIT DIVISION - SEPA OFFICIAL () K.C. LAND & WATER RESOURCES () FOSTER LIBRARY () K C PUBLIC UBRARY ( ) HIGHLINE SCHOOL. DISTRICT ( ) SEATTLE SCHOOL DISTRICT ( ) RENTON SCHOOL DISTRICT ( ) OLYMPIC PIPELINE ( ) VAL -VUE SEWER DISTRICT ( ) WATER DISTRICT #20 ( ) WATER DISTRICT #125 () CITY OF RENTON PUBLIC WORKS ( ) BRYN MAWR- LAKERIDGE SEWER/WATER DISTRICT () RENTON PLANNING DEPT () CITY OF SEA-TAC () CITY OF BURIEN . () TUKWILA PLANNING COMMISSION MEMBERS ( ) TUKWILA CITY COUNCIL MEMBERS () CITY OF SEATTLE - SEPA INFO CENTER - DCLU () STRATEGIC PLANNING OFFICE' • NOTICE OF AU. SEATTLE RELATED PLNG PROJ. LOCAL AGENCIES () DUWAMISH INDIAN TRIBE ( ) P.S. AIR POLLUTION CLEAN AGENCY () SOUND TRANSIT () DUWAMISH RIVER CLEAN -UP COALITION 'SENO NOTICE OF ALL APPUCATIONS ON DUWAMISH RIVER MEDIA ( ) HIGHLINE TIMES ( ) CI.TUKVVILA.WA.US.VWVW 1^f� ,t ti ( ! , i✓c2 'Sin. J1 % 04w clv °1oZ PUBLIC NOTICE MAILINGS FOR PERMITS SEPA MAILINGS Mail to: (comment period starts on date of mailing) Dept. of Ecology Environmental Review Section 'Applicant *Other agencies as necessary (checked off on attached list) *Any parties of record • send only the staff report, site plan and the SEPA Determination KC Transit Division —SEPA Official would like to receive information about all projects that might affect transit demand Send These Documents to DOE: SEPA Determination (3 -part from Sierra) Findings (staff report, usu. with MDNS) SEPA Checklist (filled out by applicant) Drawings/Plans of project (site plan, elevations, etc. from PMT's) Affidavit of Distribution (notice was mailed or sent to newspaper) SHORELINE MAILINGS:. Notice of Application for a Substantial Development Permit must be mailed to owners and to property owners within 500 feet of subject property, comments are due 30 days after the notice of application is mailed/posted. The notice of Application for Shoreline Substantial Development Permit must include a statement that any person desiring to submit written comments on the application or desiring to receive notification of the final decision on the application may do so within 30 days of the notice of application. If a hearing will be held on the application, the hearing notice must include the information that written comments may be submitted, or oral presentation made at the hearing. Shoreline Permit Notice of Decision: Mail to: (within 8 days of decision; 21-day appeal period begins date received by DOE) Department of Ecology Shorelands Section State Attomey General . *Applicant •Indian Tribes . . 'Other agencies as necessary (checked off on attached list). Any parties of record • send only the staff report, site plan and the SEPA Determination Send These Documents to DOE and Attorney General: hermit Data Sheet -Shoreline Substantial Development Permit (3 -part from Sierra) 'findings (staff report or memo) lb`horeline Permit Application Form (filled out by applicant) Drawings/Plans of project (site plan, elevations, etc: from PMT's) - Site plan, with mean high water mark & improvements Cross- sections of site with structures & shoreline - Grading Plan - Vicinity map 'SEPA determination (3 -part from Sierra) rind Ii gs (staff report or memo) SEPA Checklist (filled out by applicant) Any background studies related to impacts on shoreline Notice of Application Affidavit of Distribution (notice was mailed) P:W DM MISTRATIVEIFORMSICFIXLIST.DOC SEPA CHECKLIST EVALUATION I. Summary of Proposed Action The proposal is to demolish an existing 6,100 sf Tony Roma's Restaurant and construct a new 26,000 sf retail building on the 1.4 acre site. A retaining wall will be extended along the western edge of the site to push the toe of the slope back up to 10 feet. The adjacent intersection of Minkler and Southcenter Parkway will be modified to improve safety and provide queuing lanes. II. Project Information Project File: E06 -018 Associated Files: L06 -067 Design Review L06 -068 Off -site Covenant Parking Applicant: Brad Decker for SC4 Limited Liability Company Project Location: 17305 Southcenter Parkway, Tukwila WA 98188 Parcel #262304 -9024 Studies submitted with the applications include: Traffic and Parking Assessment by Transpo Group Technical Information Report by Site Development Services Geotechnical Engineering Study by Liu & Associates Attachments: A. Building, Landscape and Site Plans Agencies with Jurisdiction: Washington State Department of Ecology Puget Sound Clean Air Agency Comments to SEPA Checklist: None. • • III. Review of the Environmental Checklist 1. Earth - During construction the restaurant building will be demolished and a three to 7.5 foot retaining wall will be constructed in accordance with the geotechnical recommendations. The new building foundation will be supported on augercast pilings. Unsuitable soils across the site will be over excavated and replaced by structural fill. Minor soil erosion during construction is a possibility, but the remainder of the site is nearly flat and this should be easily controlled. No negative earth impacts are expected to result from the project. 2. Air - There will be exhaust emissions from construction equipment and trucks carrying construction materials during the project. The project's air emissions when complete will consist of automotive traffic to and from the site. A traffic and parking assessment documenting a decline in traffic impacts from the current use was submitted as part of the environmental review. 3. Water — The project will have a negligible increase in impervious area from the existing development. There will be a larger roof area and smaller parking surface so the amount of pollution generating surface will be reduced. Therefore neither detention nor water quality treatment is required per the Technical Information Report. The project has passed stormwater concurrency. 4. Plants - The existing trees and shrubs on the developed portion of the site will be removed and replaced. New landscaping will be installed along edges of the site and around the building, see Attachment A. Tree replacement will be required for the trees removed on slopes over 15% during retaining wall construction. 5. Animals —The developable portion of the site does not contain significant animal habitat. 6. Energy and Natural Resources - The project will require energy for construction equipment, vehicles coming to the site and building operation after completion. The project will be required to meet current energy codes. 7. Environmental Health — Construction activities would create short-term noise impacts. 8. Land and Shoreline Use - The proposed project will not affect the shoreline. The Green/Duwamish River is approximately 1 mile east of the site. 9. Housing - The proposal will not result in a change to the housing supply. 10. Aesthetics - The project is subject to the design review process including a hearing before the Board of Architectural Review. The building permit drawings must agree with the BAR approved design. • • 11. Light and Glare - Additional site lighting will be provided by new light standards and building lighting. The project is located in a commercial zone and the additional lighting will enhance safety without causing glare or spillover onto adjacent properties. 12. Recreation - The proposal will not affect recreational facilities. 13. Historical and Cultural Preservation - The site is not known to have any historical or cultural significance. 14. Transportation - A traffic and parking assessment by Transpo Engineers was submitted along with the checklist and determined that the new use would have lower impacts than the existing use. The existing driveway will be maintained, but intersection improvements will allow for improved access. Sidewalks will be constructed from the street to the building entrance and along the side of the building to the rear parking area. 15. Public Services - The project may have a modest increased demand on public services. 16. Utilities — There is adequate utility capacity to serve the site. The project has been granted sewer and water concurrency. IV. Conclusion The proposal can be found to not have a probable significant adverse impact on the environment and pursuant to WAC 197 -11 -340, a Determination of Nonsignificance (DNS) is issued for this project. This DNS is based on impacts identified within the environmental checklist, attachments and the above analysis. It is supported by plans, policies and regulations formally adopted by the City of Tukwila for the exercise of substantive authority under SEPA to approve, condition or deny proposed actions. Prepared by: Nora Gierloff, Planning Supervisor Date: November 6, 2006 RECEIVED SEP 2 5 2006 COMMUNITY DEVELOPMENT TECHNICAL INFORMATION REPORT SC -5 RETAIL BUILDING 17305 Southcenter Pkwy BY SITE DEVELOPMENT SERVICES 310 208th ST. SE BOTHELL 98012 425 - 481 -9687 September 22, 2006 • SECTION I PROJECT OVERVIEW • • PROJECT OVERVIEW Although the site consists of about 1.41 acres, this project will only develop the easterly 1.22 acres. The balance of the site is forested with no improvements. Runoff from the forested area will be collected in the wall drain and conveyed to the public storm drain system on the east edge of the site. In the "Pre - Application Checklist ", signed by Jill Mosqueda on June 12, 2006, no detention or infiltration is required. As for water quality, the redevelopment of the site will result in less PGIS, as much of the existing parking area will be converted to roof. Thus, runoff will be directed to two different existing storm drains, one on the northeast comer of the site and the other on the southeast corner. Both of those systems drain to Southcenter Blvd. Access to the site will be from a common driveway located on the north side of the site. The driveway will lead to a drive aisle that is shared with the site to the south. Grading for the project site will encroach slightly into the adjacent site. This is depicted on the project grading plan. An extension of the public sewer main located at the northeast corner of the site is proposed. The extension is routed around the north and west sides of the site and will serve this site, the site to the north, and the site to the southwest. The existing domestic water supply and fire system is proposed to be used for this project; however, the current 4 inch fire system will be replaced with a six inch system and the DDCV changed accordingly. The meter for the existing Tony Roma's site will be used. It is anticipated that a one inch service will be required, so if the existing service is a different size, it will be changed. 1.. 1E18TH ST ■-•-• - -- S 13iTI -•-•'..:4-; s -itiVH-I I.11 17 10 v) . r---f--1- i -4--•-__._..15_I si ‹ .i,...,,-,. ---1--- - !..1.0, <9 i- '2ND ST 1 , I .1' i 5 ST ii 1 v-■ 1"- 751N 1.717711 ; 4 7.5TI I ST 1°- ST 1S:ST ST • ‘x :x• 4:1 i si. • SI. S 176TH ST '7'1 BOW fi LAKE •PK STRANDER BLVD • 3:(P.,,--:.,41/i<tis:-S. • 154A 501.71:ElITE7 m• r_ t...a T * PLAZA _ 1RELK 1N01, = m Zrk;f1:.%.E..11,•E • 10 1)R • -7> • , .• •__ • • ; CTY47:3 ..- . OP • -, ' - BY 40.-7:1:',77 .•' 7Z SQUi1,76" ' ,.. . a .z.A.,.;,4:•' ,...--.:'. 720011L4 ,_.../4 1.-1 1. FS CORPORATE DR— N '--. 1 1c a4 ‘.-... L. COPrOPATC DP s 11111[LEP FARINAY .51/PEPCEIIT RE/1 IJETI SAX .11.c r E.Ffft■' \‘‘. f.4•51:7 SI 41. 3 , \ I PrVep SW 43RD 1 S1ST ST LC I • T. VICINITY MAP r- 40) Kingeounty Department of Development and.Environmental Services TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part:.1 PROJECT OWNER AND PROJECT ENGINEER: Project Owne�rl I. 1 Address k f ? CO`'5C � �, 117-36 << kite ct'o 1 IF'(o z- Phone to -C-2t5' "4,9,64 Project Engktieer fi^� OckNeGe1 Oo �J P� tit ^► Company 9L °�� \be t`,`n _�c Address /Phone no {�a if OR Q ,o(z 423`= ¢?o°(- 960 r'% =YPart=3 :1TYPE O.F'PERMIT APPLICATION.: Subdivison Short Subdivision Grading Commercial Other -Part 2. PROJECT LOCATION AND DESCRIPTION. Project Name .n f , at , Location Township Range :.Section Part.4 :OTHER REVIEWSAND'PERMITS DFW HPA COE 404 DOE Dam Safety FEMA Floodplain COE Wetlands Shoreline Management Rockery Structural Vaults Other Part5 SITE COMMUNITY -AND DRAINAGE BASIN Community rr ` Drainage B,sin r CYYNCte_ It%!V.*r > fa- ct vea S'Jb - )Q.S C t^ Part6 SITE _CHARACTERISTICS: River Stream Critical Stream Reach Depressions /Swales Lake Steep Slopes Floodplain ✓ Wetlands Seeps /Springs High Groundwater Table Groundwater Recharge Other Part7 SOILS Soil Type Slopes c I+Vt &l. S aMh `[ Additional Sheets Attached Erosion Potenti� cLe Erosive Velcoties /0 c.J Partr8< DEVELOPMENT; LIMITATIONS REFERENCE Ch. 4 - Downstream Analysis Additional Sheets Attached LIMITATION /SITE CONSTRAINT Part 9. ESC REQUIREMENTS MINIMUM ESC REQUIREMENTS DURING CONSTRUCTION Sedimentation Facilities !Stabilized Construction Entrance e imeter Runoff Control Clearing and Graing Restrictions over Practices struction Sequence Other MINIMUM ESC REQUIREMENTS AFTER CONSTRUCTION 17-Stabilize Exposed Surface 'emove and Restore Temporary ESC Facilities Van and Remove All Silt and Debris vEnsure Operation of Permanent Facilities Flag Limits of SAO and open space preservation areas Other VI I " � m U1• Zit (Joins sheet 11) RENTON 2.8 MI. 10 MI. TO INTERSTATE 90 RENTON 2.3 M Z 2 JVIL VV11JL1 \1x1111.111 JLI\111-rL SOIL LEGEND The first capitol letter is the initial one of the soil name. A second capital letter, A, B, C, D, E, or F, indicates the class of slope. Symbols without a slope letter are those of nearly level soils. SYMBOL NAME AgB Alderwood gravelly sandy loom, 0 to 6 percent slopes AgC Alderwood gravelly sandy loam, 6 to 15 percent slopes AgD Alderwood grovelly sandy loom, 15 to 30 percent slopes AkF Alderwood and Kitsap soils, very steep AmB Arents, Alderwood material, 0 to 6 percent slopes • AmC Arents, Alderwood material, 6 to 15 percent slopes • An Arents, Everett material • BeC Beausite gravelly sandy loam, 6 to 15 percent slopes Bel) Beausite grovelly sandy loom, 15 to 30 percent slopes BeF Beausite gravelly sandy loam, 40 to 75 percent slopes Bh Bellingham silt loam Br Briscot silt loam Bu Buckley silt loam Cb Coastal Beaches Ea Eorlmont silt loom Ed Edgewick fine sandy loom EvB Everett grovelly sandy loam, 0 to 5 percent slopes EvC Everett grovelly sandy loam, 5 to 15 percent slopes EvD Everett gravelly sandy loam, 15 to 30 percent slopes EwC Everett - Alderwood grovelly sandy looms, 6 to 15 percent slopes InA Indianola loamy fine sand, 0 to 4 percent slopes InC Indianola loamy fine Sand, 4 to 15 percent slopes InD Indianola loamy fine sand, 15 to 30 percent slopes KpB Kitsap silt loom, 2 to 8 percent slopes KpC Kitsop silt loam, 8 to 15 percent slopes KpD Kitsop silt loam, 15 to 30 percent slopes KsC Klaus gravelly loamy sand, 6 to 15 percent slopes Ma Mixed alluvial land NeC Neilton very gravelly loamy sand, 2 to 15 percent slopes' Ng Newberg silt loam Nk Nooksack silt loom No Norma sandy loam Or Orcos peat Os Oridia silt loam OvC Ovall gravelly loam, 0 to 15 percent slopes OvD Ovall gravelly loom, 15 to 25 percent slopes OvF Ovall grovelly loam, 40 to 75 percent slopes Pc Pilchuck loamy fine sand Pk Pilchuck fine sandy loam Pu Puget silty clay loam Py Puyallup fine sandy loam RaC Rognar fine sandy loam, 6 to 15 percent slopes RaD Rognar fine sandy loom, 15 to 25 percent slopes RdC Ragnar- Indianola ossociotion, sloping • RdE Rognar - Indianolo association, moderately steep • Re Renton silt loam Rh Riverwash Sa Salal silt loom Sh Sammomish silt loom Sk Seattle muck Sm Shalcar muck Sn Si silt loam So Snohomish silt loam Sr Snohomish silt loom, thick surfoce variant Su Sultan silt loom Tu Tukwila muck Ur Urban and .■•41* Wo Woodinville silt loam ._ • The composition of these units is more variable than that of the others in the area, but it has been controlled well enough to interpret for the expected use of the soils. SECTION II PRELIMINARY CONDITIONS SUMMARY • PRELIMINARY CONDITIONS SUMMARY No conditions of approval have been created by the City for this project, so this section will only address the core and special requirements. CORE REQUIREMENTS Discharge at the Natural Location: The existing site drains to the storm drain in Southcenter Pkwy. The completed site will drain to the same locations. Offsite Analysis: All drainage systems in and around the site are fully developed and consist of storm drain pipes. See Section III for a full description. Flow Control: Of the 1.22 acres to be developed, the impervious area is increasing by 5,227 square. The increase is in roof area, as the parking lot area will be reduced. Because the site will not significantly increase the impervious area, and by direction of the City staff, no detention is required. Conveyance System: A backwater analysis was not done, as the runoff from the site is distributed as it was in the predeveloped conditions. The increase in impervious surface is so small that the increase in runoff will be negligible. Off site runoff from the west will be routed around the new building in a piped system having a capacity equivalent to the existing system. Roof runoff will not be directed to any of that portion of the storm drain located behind the building, as none of the existing site drained to that system. Erosion and Sediment Control: No sediment trap or pond is required, as the size of the site and the length of runoff are too small. Other BMP's are proposed. See Section VII. Maintenance and Operations: Maintenance requirements are provided in Section X. Financial Guarantees and Liability: All required guarantees will be provided when requested. • • Water Quality: The redevelopment of the site will result in a reduction of pollution generating impervious surface of 0.12 acres, as much of the impervious area is changing to roof. Therefore, no water quality systems are proposed. SPECIAL REQUIREMENTS Other Adopted Area - Specific .Requirements: No such areas are known to affect this site. Floodplain /Floodway Delineation: The site does not contain, nor is it adjacent to a stream, lake, wetland, or closed depression Flood Protection Facilities: The site is not adjacent to a Class 1 or 2 stream, nor does is propose to construct a new or modify and existing flood protection facility. Source Controls: No special controls should be required for the site, as no significant sources of storm water pollution are proposed. Oil. Control: This is not a high use site, nor is it redeveloping an existing high use site. Therefore, special oil control measures are not required. • SECTION III OFF SITE ANALYSIS • • OFFSITE ANALYSIS Upstream: Runoff enters the site from the upstream area either as sheet flow or in an 18" half -round pipe. The half -round pipe drains to a catch basin, which outlets via a 12 inch storm drain through the site. On -site: The site is occupied by a restaurant building in the center, with parking on the west, east and south sides. Runoff is collected in a system of catch basins and storm drain pipes which outfall to an 86 inch storm drain in Southcenter Pkwy. In addition, there is a 12 inch storm drain system draining the upstream area described above. This pipe also outfalls to the same storm drain in Southcenter Pkwy. Downstream: All of the runoff enters a large diameter storm drain in Southcenter Pkwy. This pipe drains to the north to Minkler St., where it turns and heads east in a 54 inch pipe. The system is illustrated in copies of the City's storm drain maps, enclosed herein. The developed site will drain into this system, as it does now. 7'i. rt. ll Li ). 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SECTION VIII EROSION /SEDIMENTATION CONTROL DESIGN • • EROSION /SEDIMENTATION CONTORL DESIGN No sediment trap or pond is required, as the size of the site and the length of runoff are too small.. The maximum runoff path is from the west side to the east side, a distance of about 243 feet over a slope of 2.5 %. In accordance with Section D.4.3 of the Drainage Manual (see next page), perimeter protection is adequate for this condition. Thus, basic BMP's such as a silt fence, catch basin filters, construction entrance, and ground cover techniques are adequate. SECTION D.4 ESC MEAS. D.4.3 PERIMETER PROTECTION ESC Requirement 3: Perimeter protection to filter sediment from sheetwash shall be located downslope of all disturbed areas and shall be installed prior to upslope grading. Perimeter protection includes the use of vegetated strips as well as more conventional, constructed measures, such as silt fences. During the wet season, 50 linear feet of silt fence (and the necessary stakes) per acre of disturbed area must be stockpiled on site. Purpose: The purpose of perimeter protection is to reduce the amount of sediment transported beyond the disturbed areas of the construction site. Perimeter protection is primarily a backup means of sediment control. Most, if not all, sediment -laden water is to be treated in a sediment trap or pond. The only circumstances in which perimeter control is to be used as a primary means of sediment removal is when the catchment is very small (see below). When to Install: Perimeter protection is to be installed prior to any upslope clearing and grading. Measures to Use: There are three perimeter protection measures in this section that can be used to satisfy ESC Requirement 3: silt fence, brush barriers, and vegetated strips. These measures can be used interchangeably. If surface water is collected by an interceptor dike or swale and routed to a sediment pond or trap, there is no need for the perimeter protection measures specified in this section. Criteria for Use as Primary Treatment: At the boundary of a site, perimeter protection may be used as the sole form of treatment when the flowpath meets the criteria listed below. If these criteria are not met, perimeter protection shall only be used as a backup to a sediment trap or pond. Average Slope Slope Percent Flowpath Length 1.5H:1V or less 67% or less 100 feet 2H:1 V or less 50% or less 115 feet 4H:1V or less 25% or less 150 feet 6H:1V or less 16.7% or less 200 feet —___ -- 10H:1 V or less 10% or less 250 feet D.4.3.1 SILT FENCE 9/1/98 Code: SF Symbol: X X X X—X Purpose - Use of a silt fence reduces the transport of coarse sediment from a construction site by providing a temporary physical barrier to sediment and reducing the runoff velocities of overland flow. Conditions of Use 1. Silt fence may be used downslope of all disturbed areas. 2. Silt fence is not intended to treat concentrated flows, nor is it intended to treat substantial amounts of overland flow. Any concentrated flows must be conveyed through the drainage system to a sediment trap or pond. The only circumstance in which overland flow can be treated solely by a silt fence, rather than by a sediment trap or pond, is when the area draining to the fence is small (see "Criteria for Use as Primary Treatment" on page D -18). Design and Installation Specifications 1. See Figure D.4.E for details. D -18 Erosion and Sediment Control Standards SECTION X MAINTENANCE & OPERATIONS MANUAL • • MAINTENANCE AND OPERATIONS MANUAL Only catchiiasin_.and pipe maintenance is required. Clean the sediment when it reaches a depth of 8 inches by extending the vacuum pipe through the access lid and to the bottom of the structure. This will likely be required once every several years. See the enclosed guidelines for the maintenance of catch basins. APPENDI•MAINTENANCE STANDARDS FOR PRIVA n IAINTAINED DRAINAGE FACILITIES NO.5 - CATCH BASINS Maintenance Component General Defect Conditions When Maintenance is Needed Results Expected When Maintenance is performed Trash & Debris (Includes Sediment) Trash or debris of more than 1/2 cubic foot which is located immediately in front of the catch basin opening or is blocking capacity of the basin by more than 10% Trash or debris (in the basin) that exceeds 1/3 the depth from the bottom of basin to invert the lowest basin. pipe into or out of the basin. No Trash or debris located immediately in front of catch basin opening. No trash or debris in the catch Trash or debris in any inlet or outlet pipe blocking more than 1/3 of its height. Dead animals or vegetation that could generate odors that could cause complaints or dangerous gases (e.g., methane). Deposits of garbage exceeding 1 cubic foot in volume Structure Damage to Comer of frame extends more than 3/4 inch past Frame and/or Top Slab curb face into the street (If applicable). Cracks in Basin Walls/ Bottom Sediment/ Misalignment Top slab has holes larger than 2 square inches or cracks wider than 1/4 inch (intent is to make sure all material is running into basin). Frame not sitting flush on top slab, i.e., separation of more than 3/4 inch of the frame from the top slab. Cracks wider than 1/2 inch and longer than 3 feet, any evidence of soil particles entering catch basin through cracks, or maintenance person judges that structure is unsound. Cracks wider than 1/2 inch and longer than 1 foot at the joint of any inlet/ outlet pipe or any evidence of soil particles entering catch basin through cracks. Basin has settled more than 1 inch or has rotated more than 2 inches out of alignment. Inlet and outlet pipes free of trash or debris. No dead animals or vegetation present within the catch basin. No condition present which would attract or support the breeding of insects or rodents. Frame is even with curb. Top slab is free of holes and cracks. Frame is sitting flush on top slab. Basin replaced or repaired to design standards. No cracks more than 1/4 inch wide at the joint of inlet/outlet pipe. Basin replaced or repaired to design standards. 1998 Surface Water Design Manual 9/1/98 A -5 APPENDIX A MAINTENANCEO.NDARDS FOR PRIVATELY MAINTAINED D•AGE FACILITIES NO. 5 - CATCH BASINS (CONTINUED) Maintenance Component Defect Conditions When Maintenance is Needed Results Expected When Maintenance is performed Catch Basin Cover Ladder Metal Grates (If Applicable) Fire Hazard Vegetation Pollution Cover Not in Place Locking Mechanism Not Working Cover Difficult to Remove Ladder Rungs Unsafe Presence of chemicals such as natural gas, oil and gasoline. Vegetation growing across and blocking more than 100 of the basin opening. Vegetation growing in inlet/outlet pipe joints that is more than six inches tall and less than six inches apart Nonflammable chemicals of more than 1/2 cubic foot per three feet of basin length. Cover is missing or only partially in place. Any open catch basin requires maintenance. Mechanism cannot be opened by on maintenance person with proper tools. Bolts into frame have less than 1/2 inch of thread. One maintenance person cannot remove lid after applying 80 lbs. of lift; intent is keep cover from sealing off access to maintenance. Ladder is unsafe due to missing rungs, misalignment, rust, cracks, or sharp edges. Grate with opening wider than 7/8 inch. Trash and Debris Trash and debris that is blocking more than 20% of grate surface. Damaged or Missing. Grate missing or broken member(s) of the grate. NO.6 DEBRIS BARRIER S (E.G., TRASH RACKS) Maintenance Components General Metal No flammable chemicals present. No vegetation blocking opening to basin. No vegetation or root growth present. No pollution present other than surface film. Catch basin cover is closed Mechanism opens with proper tools. Cover can be removed by one maintenance person. Ladder meets design standards and allows maintenance person safe access. Grate opening meets design standards. Grate free of trash and debris. Grate is in place and meets design standards. Defect Condition When Maintenance is Needed Results Ex • _ • • When ance is Performed. Trash and Debris Trash or debris that is plugging more the • - - a'ngs in the barrier. Damaged/ Missing Bars. are bent out of shape mo n 3 inches. of Bars are missing or entire barrier missing. Bars are loose and rust is causing 50% deterioration to any part of barrier. Barrier dear to receive capacity flow. Bars in place with no bends more than 3/4 inch. lace according to design. Repair or replace b design standards. 9/1/98 A -6 1998 Surface Water Design Manual • LANCE MUELLER S ASSOCIATES R C H I T E C TS September 14, 2006 • A I A Job: SC -5 RETAIL BUILDING 17305 Southcenter Parkway, Tukwila, WA (LMA #05 -112) SC — 5 RETAIL BUILDING PROJECT DESCRIPTION RECEIVED SEP 2 5 2006 COMMUNITY DEVELOPMENT This project consists of demolition of the existing Tony Roma's Restaurant and construction of a new 25,814 s.f. bulk retail building and related site work. Lay -Z -Boy Furniture will be moving into this building. The site ingress and egress is by an existing common driveway from Southcenter Parkway at Minkler and there is also access via the Ethan Allen parking lot to another driveway to the south. Parking for ±50 cars is provided on the site, plus 20 cars off -site. Two truck loading spaces are provided. The building will be constructed of integral color concrete masonry with stucco finish on the main entry facade. The east or entry roofline will be modulated with steps in the parapet forms and formed cornice detailing. Three types of metal canopies over entry storefronts will add shelter, color and projecting elements to the wall plane. The east wall has six steps in the plan which will further provide modulation on the front of the building. The side and rear elevations of the building are predominately CMU masonry in integral color and texture creating a facade pattern for interest and texture. Painted metal grids and trellises will be mounted on the west wall to provide additional form, texture and shadow patterns. The highest wall will be approximately 34 ft. Rooftop HVAC equipment will be screened by parapet walls. The stucco will be painted with several complimentary light earth tone colors. The columns at the storefronts will have integral color split face and smooth CMU masonry bases that will be recalled in masonry elements around the other walls of the building. Wall sconces will provide accent Tight along the front sidewalk. The rear and side walls will have wall mounted downlights with glare reduction lens or shields. Pole mounted lights will illuminate the parking area along the street. Landscaping will consist of 15 ft. along Southcenter Parkway, 10 ft. along the rear yard zone change, and front, side and rear yard planting areas that meet or exceed the area ratio required for parking areas. Trash receptacles and recycle storage areas will be enclosed in 8 ft. high CMU walls to match building, with painted metal gates. Tenant signage will be wall mounted as required. There will also be one 22 ft. high freestanding sign on a pylon with a face area of 75 s.f. per side. All signage will comply with the City Sign Code. September 14, 2006 Job: SC -5 RETAIL BUILDING PROJECT DESCRIPTION Page Two The project complies with the City of Tukwila's Comprehensive Plan, Development Regulations and other applicable laws, policies and objectives based on meetings with City staff, review of Codes. Construction is expected to begin in early 2007 with completion in summer 2007. N K -CD -1 /SC -5- RETAIL- BLDG -P RJ- DESCRI PT. doc The RECEIVED Transpo SEP 2 5 2006 Group COMMUNITY TECHNICAL MEMORANDUM DEVELOPMENT Date: March 22, 2006 TG: 05357.00 To: Nora Gierloff, City of Tukwila From: Brandon Moen, AICP cc: Brad Decker, Decker Development Subject: 17305 Southcenter Parkway: Traffic and Parking Assessment This technical memorandum presents a brief traffic and parking assessment of the proposed redevelopment at 17305 Southcenter Parkway in Tukwila, Washington. The scope of this memorandum is based on feedback from City of Tukwila staff that was provided to Transpo by the project proponent. This traffic assessment addresses the following key areas identified by city staff: • Site Trip Generation • On -site Parking Supply /Demand • Parking Layout Operations Redevelopment Summary The proposed redevelopment would construct up to 26,203 square feet (sf) of furniture store space, replacing the existing 6,118 sf restaurant currently located on- site. Access to the site would primarily be provided via a shared access to be constructed as the west approach to the signalized Southcenter Parkway /Minlder Boulevard intersection, as part of improvements for the adjacent 17275 Southcenter Parkway project. The site access would be controlled by the traffic signal at the intersection, as opposed to the existing right -out only access that currently forms the intersection's west approach. The site's current access is a shared, unsignalized driveway located along the project's south property line, which would be removed as part of the proposed project. A site plan for the redevelopment is shown as Attachment 1. Trip Generation To identify the traffic implications of the proposed redevelopment, trip generation estimates were prepared for the existing restaurant located on -site and compared to the proposed redevelopment. The difference between the two represents the net impact of the redevelopment. Trip generation estimates were developed for a typical . weekday, weekday PM peak hour of the adjacent street traffic, and Saturday peak hour of the generator. Trip generation estimates were developed using trip rates provided in ITE Trip Generation (7th Edition). For the existing restaurant, the trip rate for Land Use # 932 (High- Turnover Sit -Down Restaurant) was used, while the trip rate for Land Use # 890 (Furniture Store) was used for the proposed redevelopment. Appropriate pass- The Transpo Group Inc. 11730118th Avenue N.E., Suite 600 Kirkland, WA 98034 -7120 425.821.3665 Fax: 425.825.8434 • • The Transpo Group by trip rate considerations were made for both land uses based on the ITE Trip Generation Hand/xde (2001). Pass -by rates are not provided for daily or Saturday peak hour conditions, so the weekday PM peak hour rates provided by ITE were used (43- percent for Fast -Food Restaurant with Drive -Thru Window, 53- percent for Furniture Store). Table 1 shows the estimated existing trip generation, the proposed redevelopment's trip generation, and the resulting net new trips. Table 1. Redevelopment Trip Generation Summary Land Use Daily Trips Weekday PM Peak Hour Saturday Ptak Hour of the Generator Total In Out Total In Out PROPOSED REDEVELOPMENT Furniture Store' 133 12 5 7 22 12 10 (26,203 sf) Less Pass -by Trips (53 %Y (71) (6) (3) (4) (12) (6) (5) Primary Project Trips 62 6 2 3 10 6 5 EXISTING SITE High- Turnover Sit -Down Restaurant' 778 67 41 26 122 77 45 (6,118 sf) Less Pass -by Trips (43 %)4 (335) (29) (18) (1 1) (53) (33) (19) Primary Existing Trips 443 38 23 15 69 44 26 NET NEW TRIPS Total Trips -645 -55 -36 -19 -100 -65 -35 Pass -by Trips ( -264) ( -23) ( -15) ( -7) ( -41) ( -27) ( -14) Primary Trips -381 -32 -21 -12 -59 -38 -21 1. Based on average trip generation rate for "Furniture Store" land use (LU #890)- ITE Trip Generation (2003). 2. Based on average pass -by rate for "Furniture Store" land use (LU #890) -ITE Trip Generation Handbook (2' Edition). 3. Based on average trip generation rate for "High- Turnover Sit -Down Restaurant" land use (LU #932)- ITE Trip Generation (2003) for the weekday PM peak hour. 4. Based on average pass -by rate for "High- Turnover Sit -Down Restaurant" land use (LU #932)- ITE Trip Generation Handbook (2^" Edition) for the weekday PM peak hour. As is shown in Table 1, the proposed redevelopment would result in less primary and pass -by vehicle trips over the course of a typical weekday, as well as in the weekday PM peak hour and the Saturday peak hour. For instance, during the weekday PM peak hour, the proposed redevelopment would result in 32 less new trips, and 23 less pass - by trips, while during the Saturday peak hour of the generator, the proposed redevelopment would generate 59 less new trips and 41 less pass -by trips. Based on this analysis, the proposed redevelopment is anticipated to generate less traffic than the current land use located on -site. Thus, the traffic impacts to the site driveway and area intersections should be less than if the current restaurant on -site were to remain. The Transpo Group Page 2 • The Transpo Group On -Site Parking The proposed redevelopment would include a supply of 44 parking stalls to be located on -site in a surface parking lot. The adequacy of the proposed parking supply for the redevelopment was compared to the estimated peak parking demand for such a land use. ITE Parking Generation (3r1 Edition) was used to estimate the parking demand, which is identified in Parking Generation as occurring on a Saturday. The average peak parking demand rate for Land Use # 890 (Furniture Store) was utilized. Table 2 compares the proposed parking supply to the calculated peak demand. Table 2. Parking Demand Summary Saturday Peak Hour Conditions (Parking Stalls) Proposed Parking Supply 44' Projected Peak Demand' 25 Parking Surplus +19 1. 44 parking stalls would be provided on -site, while 20 additional stalls would be available at the adjacent 1 7275 Southcenter Parkway site. 2. 0.94 parking stalls per 1,000 sf: ITE Parking Generation (2^° Edition)- Average Peak - Period Parking Demand (Saturday Peak Hour) for LU #890 (Furniture Store). As is shown in Table 2, the project's proposed on -site parking supply of 44 parking stalls exceeds the estimated peak demand by 19 stalls during the peak demand time - period (Saturday). Based on this comparison, the proposed parking supply on -site should adequately serve the proposed redevelopment. In addition, 20 parking stalls would be available for use at the adjacent 17333 Southcenter Parkway site, should spill-over occur. The peak-period parking demand identified in ITE Parking Generation for land use # 890 (Furniture Store) ranges between a low of 0.67 stalls per 1,000 sf, to a high of 1.30 stalls per 1,000 sf. This would suggest a peak parking demand of between 18 and 34 parking stalls, both of which are accommodated by the proposed on -site parking supply. Parking Layout Operations Consistent with a previous assessment of the adjacent 17275 Southcenter Parkway site, the shared parking lot and access configuration proposed between both the 17305 and 17275 Southcenter Parkway redevelopments were reviewed by Transpo staff, specifically as they relate to parking circulation and operations. The most recent site plan provided shows that the site access will form the west approach of the Southcenter Parkway /Minkler Boulevard intersection. The parking aisle that serves the on -site parking for 17305 Southcenter Parkway would be located approximately 40 feet west of Southcenter Parkway. The proposed parking aisle would align with the future location of the parking aisle of the 17275 Southcenter Parkway redevelopment directly adjacent to the north, as well as the existing Ethan Allen site directly to the south. The Transpo Group Page 3 • • The Transpo Group There is the possibility that a parked vehicle backing out of one of the parking stalls near the north end of the lot may block the entry of an inbound vehicle, if the inbound vehicle tums south into the parking lot. However, there is a relatively low likelihood for such a,conflict given the project's anticipated trip generation. Even if the potential for a conflict did occur, a queue of at least two vehicles would be able to form in the driveway throat before the queue would reach Southcenter Parkway. The occurrence of such a series of simultaneous events necessary to result in such a conflict is unlikely. Similar spacing between parking lot drive aisles and Southcenter Parkway have been approved for other developments in the area which were anticipated to generate more traffic than the redevelopment of this site. The lower trip generation for this site further reduces the likelihood of potential conflicts. We trust that this memorandum addresses the issues requested by city staff regarding the 17305 Southcenter Parkway redevelopment as it relates to the anticipated trip generation, parking demand, and potential parking - layout issues. Please let us know if you have any questions or comments. M \05 \05357 17275 -17305 Southcenter Parkway\ 17305 SC Pkay\ 17305 SC Pkwy.doc The Transpo Group Page 4 N NOT TO SCALE Attachment 1 Site Plan TriMSPOTheGroup 17305 Southcenter Parkway: Tukwila, Washington M:105I05357 17275-17305 Southcenter Parkwayi17305 SC Pkwy1soutcanter taapht02 <A> lindak 03/17/06 14:08 GEOTECHNICAL ENGINEERING STUDY PROPOSED RETAIL BUILDING 17305 SOUTHCENTER PARKWAY TUKWILA, WASHINGTON L &A Job No. 6A002 Date: January 25, 2006 Prepared for: Decker Development & Construction, Inc. • 117 East Louisa Street, Suite 230 Seattle, Washington 98102 Prepared By: Liu & Associates. Inc. 19213 Kenlake Place NE Kenmore, Washington 98028 OVERVIEW The subject site is located at 17305 Southcenter Parkway in Tukwila. Washington. The Parcel No. of the property is 2623049024. The site is an irregularly - shaped parcel, totaling about 124 19213 Kenlake Place NE • Kenmore, Washington 98028 Phone (425) 483 -9134 • Fax (425) 486 -2746 BACKGROUND The site is located in the Tukwila valley which is known to have alluvium deposits with limited foundation support capability and liquefaction potential. Therefore, subsurface investigation is pP 1 Y q potential. to explore the subsurface conditions of the site, with obtained soil data to be used for determining the type and hearing capacities of foundations to be used for supporting the building and the method of mitigating liquefaction potential, if required. We are unaware of whether contaminants exist under the site, or whether environmental site assessment had been performed on the site. Our observation of soil cutting from the drilling of the test borings and examination of soil samples obtained from subsurface exploration of the site, however, seems to indicate that the site is free of contaminants. PURPOSE AND SCOPE OF SERVICES The purpose of this geotechnical engineering study is to explore and characterize the subsurface conditions of the site, perform geotechnical engineering analyses, and provide geotechnical recommendations for site grading, surface and ground water drainage control, erosion mitigation, and type and bearing capacities of foundations, etc. for the proposed development. To achieve the above purpose, our scope of services for this study comprises specifically the following: 1 Review the geologic and soil conditions at the site based on a published geologic map. LIU & ASSOCIATES, INC. . lanuary 25. 2006 Proposed Retail Building L &A Job No. 6A002 Page 3 2. Explore the subsurface conditions of the site with three test borings. 3. Perform necessary geotechnical analyses and provide geotechnical recommendations for site grading, erosion mitigation, surface and ground water control, and foundation type, design and construction, based on subsurface conditions encountered in the test borings and results of our geotechnical analyses. 4. Prepare a written report to present our findings, conclusions, and recommendations. INVESTIGATIONS SUMMARY Subsurface conditions at the site were explored on January 5, 2006, with three test borings drilled with a track- mounted Mobile 20 drilled rig owned and operated by Davies Drilling. Soil samples were obtained from the test borings with a standard split -spoon sampler of 2 -inch outside diameter. Standard Penetration Tests (SPT) were conducted, in accordance with ASTM D -1586, in the bore holes, by advancing the soil sampler with a 140 -pound hammer that was raised and released for a 30 -inch free fall. The number of blows required to advance the sampler a given distance is an indication of the density for granular soils or the consistency of cohesive soils. The sampler was advanced 18 inches and the total number of blows for the last 12 inches were recorded on the boring logs as SPT N- values. SITE CONDITIONS LOCATION AND SURFACE CONDITIONS The general location of the subject site is shown on Plate 1 — Vicinity Map. It is located in a commercial /retail zone, a short distance to the southwest of Southcenter Shopping Mall. The site is bounded by Southcenter Parkway to the east and adjoined by commercial properties to the north and south, and backed into a wooded hillside to the west. The site is situated near the western fringe of a flood plain of the nearby Green River, and is at the base of a moderate to steep, east - declining hillside. An existing one -story restaurant building �l U & ASSOCIAT.ES, INC. January 25, 2006 Proposed Retail Building L &A Job No. 6A002 Page 4 currently occupies the site. This existing building is surrounded by a paved parking lot to its north, south and west sides, and a grass covered Iawn to its east. Th entire site, including the paved area and grass - covered Iawn area, slopes very gently eastward towards Southcenter Parkway. GEOLOGIC SETTING The Geologic Map of the Des Moines Quadrangle, Washington, by Howard 1 -I. Waldron, published by U. S. Geological Survey in 1962, was referenced for the geologic and soil conditions at the site. According to this publication, the surficial soil units at and in the vicinity of the site are mapped as Kame - terrace deposits (Qit) overlain by alluvium deposits (Qa). The geology of the Puget Sound Lowland has been modified by the advance and retreat of several glaciers in the past and subsequent deposits and erosions. The latest glacier advanced to the Puget Sound Lowland is referred to as the Vashon Stade of the Fraser Glaciation which had occurred during the later stages of the Pleistocene Epoch, and retreated from the region some 14,500 years ago. The Kame- terrace deposits were lain down by ice - marginal streams flowing between higher ground on one side and an ice margin on the other side during the last glaciation. They consist mostly of silty sand and gravel to cobble. Locally, they also contain lenses and pods of till and beds of sand, silt and clay. The alluvium deposits are mainly composed of silt and fine sand with minor amounts of peat and clay. They were mostly laid clown by the flooding water of the nearby Green River and the hillside streams to the west. SUBSURFACE SOIL CONDJTIONS The approximate locations of the test borings are shown on Plate 2 - Site and Exploration Location Plan. The test borings were drilled to depths of 30.0 to 36.5 feet. Soil samples obtained from the test borings were visually classified in general accordance with Unified Soil LIU & ASSOCIATES, INC. January 25, 2006 Proposed Retail Building L &A Job No. 6A002 Page 5 Classification System, a copy of which is presented on Plate 3. A geotechnical engineer from our office was present during the exploration, who examined the soil samples retrieved from the test borings and he soil and geologic conditions encountered, and completed logs of test borings. Detailed descriptions of the soils encountered during site exploration are presented in test boring Togs on Plates 4 through 6. A soil profile of the site is shown on Plate 7. Except a grass lawn at its east end, the site is covered with 2 to 3 inches of asphaltic concrete pavement constructed over 3 to 24 inches base material consisting of crushed rock or gravelly sand. Underlying the pavement base material is a layer of fill, consisting of loose to dense, silty fine sand to gravelly fine to coarse sand, about 5 to 6 feet thick. A thin layer of relic topsoil was found underlying the fill in Test Boring B -1. Underlying the fill and relic topsoil are thick beds of very loose bog sediment and /or alluvium, down to the depths of about 24 to 31 feet below existing grade. Underlying the beds of bog sediment and alluvium deposit is a Kame terrace deposit of medium -dense to very - dense, fine to coarse sand to the depths explored, except that a deposit of gray, very -hard silt with thin sand interbeds was found underlying the Kame terrace in Test Boring B -1. The soil conditions encountered in the test borings seem to indicate that there had been an old drainage swale or gully running through the north side of the site. Beds of very -loose alluvium deposit of silty fine sand and fine sandy silt, containing drift tree trunks, was laid down over most of the site following the retreat of the last glaciation. The old drainage swale or gully along the north side of the site was also filled with thick bog sediment that contains silty peat, roots and wood chips. The site was then filled and paved over to its current condition during subsequent development of the site and its surrounding areas. GROUNDWATER CONDITION Groundwater table was encountered at about 11.0 feet deep in Test Boring B -1, 6.5 feet deep in Test Boring B -2, and at about 7.0 feet in Test Boring B -3, after completion of test borings. The LIU & ASSOCIATES, INC. January 25, 2006 Proposed Retail Building L&A Job No. 6A002 Page 6 high groundwater level measured may be highly representative of the winter high groundwater table under the site as the test borings were drilled in the midst of a very wet winter after many consecutive days with precipitation. The groundwater table may fluctuate seasonally, depending on precipitation, surface runoff, ground vegetation cover, site utilization, and other factors. The groundwater table may lower significantly in the dryer Summer months and accumulate and rise in the wet winter months. SUBSURFACE CONTAMINATION No contaminants or materials suspected of contaminants were observed on,the surface of the site or encountered in the test borings under the site. DISCUSSION AND CONCLUSIONS Underlying the pavement and its base material is a 5 -to -6 -foot layer of inconsistently constructed fill underlain by thick beds of very -loose bog sediment and /or alluvium deposit down to depths about 24 to 31 feet. The bog sediment and alluvium deposit are underlain by medium -dense to very -dense Kame terrace deposits. The underlying Kame terrace deposits will be able to provide excellent foundation support to the proposed building. Piles should be used to penetrate through the hog sediment and alluvium deposit and seat into the underlying Kame terrace deposits to transfer structural loads to the competent Kame terrace deposits and to minimize potential foundation settlement. SLOPE STABILITY The site is nearly flat. Slope stability is not an issue. SEISMIC CONSIDERATIONS The Puget Sound region is classified as Seismic Zone 3 by the Uniform Building Code (UBC). The very -loose bog sediment and alluvium deposit underlying the site coupled with high LIU & ASSOCIATES, INC. January 25, 2006 Proposed Retail Building L &A Job No. 6A002 Page 7 groundwater table may be prone to liquefaction during strong earthquakes. The effect of liquefaction potential can be mitigated by supporting the proposed building on piles embedded with sufficient depths into the underlying very -dense Kame terrace deposits. The proposed building should be designed for the seismic forces during strong earthquakes. Based on the soil conditions encountered by the test pits, it is our opinion that Seismic Use Group 1 and Site Class D should be used in the seismic design of the proposed residences in accordance with the 2003 international Building Code (IBC). SITE WORK Site preparation should include clearing and grubbing and removal of the existing parking pavement within construction limits. The ground within the building footprint should be excavated a foot or two below the finish subgrade level. The exposed soils should be compacted to a non- yielding state with a vibratory mechanical compactor, then covered with a layer of 4-to- 6-inch rock spalls for erosion control and to provide a firm working surface for foundation construction. Storm runoff will be contained in the excavated pit surrounded by nearby existing paved parking lot. Silt fence will likely only be required along the eastern boundary of the site to prevent sediments being transported onto the street bordering the site on this side. .RETAINING STRUCTURES Not applicable. ROCKERIES Not applicable. FOUNDATION SUPPORT Due to the layer of very -loose bog sediment and alluvium deposit underlying the site, varying from about 17 to 28 feet in thickness and with tree logs intermixed in the, we recommend pile foundations be used to support the proposed building. The piles should penetrate through the LIU & ASSOCIATES, INC. January 25, 2006 Proposed Retail Building L &A Job No. 6A002 Page 8 bog sediment and alluvium deposit and seat into the underlying very -dense Kame terrace deposits. The alluvium deposits underlying the site are very loose, and densification of very -loose alluvium sand deposits may be induced by ground vibrations from pile driving, which may result in foundation settlement and damages to adjacent buildings and parking pavement if driven piles are to be used. High groundwater table in very -loose bog sediment and sandy alluvium deposit may cave severely during hole drilling if drilled piers are to be used. Casing and drilling mud will have to be used to keep drilled holes open and to minimize ground loss for drilled pier installation. Therefore, neither of these two types of piles is suitable from a construction viewpoint. Augercast piles should be suitable for supporting the building. Augercast piles are cast -in -place concrete piles. They are installed by drilling a hole in the ground with a continuous- flight, hollow -stem auger. The continuous -flight auger can maintain an open hole even in potentially caving or squeezing soils. After the holes are drilled to depth, fluid cement -sand grout is then pumped into the hole through the hollow stem, filling the hole from bottom up as the auger is slowly withdrawn out of the ground. A rebar cage is then inserted into the grout - filled holes to complete the pile construction procedure. The installation of augercast piles would generate minimal ground vibration. RECOMMENDATIONS SITE GRADING AND EARTH WORK Site preparation should include clearing and grubbing within construction limits. The surflcial topsoil, loose sandy soils and unsuitable soils in the root zone should be stripped. The exposed surface should be compacted to a non - yielding state using a vibratory roller compactor. Storm LIU & ASSOCIATES, .INC. January 25, 2006 Proposed Retail Building L &A Job No. 6A002 Page 9 runoff, if any, should be directed with sandbag or asphalt curbs away from construction area to minimize erosion during construction,. The on -site, on -site surficial fill of silty fine sand is sensitive to moisture. A layer of clean quarry spalls should be placed over the excavated areas and areas of frequent traffic, as required, to protect the subgrade soils from disturbance by construction traffic. A silt fences should be erected along the east side of the site to prevent: sediments being transported onto adjacent street. The bottom of silt fence filter fabric should be anchored in a trench filled with gravel. EXCAVATION SLOPES Under no circumstance should excavation slopes be greater than the limits specified by local, state and federal safety regulations if workers have to perform construction work in excavated areas. Temporary, unsupported cuts greater than 4 feet in height should be no steeper than 1 H:1 V in the surficial fill and no steeper than 1-1/2 in the underlying very -loose bog sediment or alluvium deposit, assuming that groundwater will not be encountered over the depths of excavation during construction. If groundwater is encountered, sufficient numbers of dewatering wells or sump pits should be installed to lower the groundwater table to at least 2 to 3 feet below the bottom of excavation to facilitate grading work. STRUCTURAL FILL Structural :fill is the dill placed under roadway pavements, footings, slabs-on-grade, and behind retaining walls where it support Loads. Structural fill should consist of clean soils with particles not larger than four inches and should be free of organic and other deleterious substances. Structural fill should have a moisture content within 1% of its optimum moisture content at the time of placement. The optimum moisture content is the water content in the soil that enable the soil to be compacted to the highest dry density for a given compaction effort. The on -site sandy soils may be used for structural fill if their moisture content can be controlled to close to their optimum water content at the time of placement. Imported material to be used as structural fill, LIU & ASSOCIATES, INC. January 25, 2006 Proposed Retail Building L &A Job No. 6A002 Page 10 should be clean, free- draining, granular soils containing no more than 5% by weight finer than the No. 200 sieve based on the fraction of the material passing No. 4 sieve, and should have individual particles not greater than four inches. Structural fill should be placed in lifts no more than 10 inches thick in its loose state, with each lift compacted to a minimum percentage of the maximum dry density determined by ASTM D1557 (Modified Proctor Method) as follows: Application % of Maximum Dry Density Within building pads of the building lots 95% Roadway /driveway subgrade 95% for top 3 feet and 90% below Retaining wall backfill 90% Utility trench backfill 95% for top 4 feet and 90% below TEMPORARY SHORING AND RETAINING WALLS Not applicable. ROCKERIES Not applicable. REINFORCED SOIL STRUCTURES Not applicable. STRUCTURE AND FOUNDATIONS We recommend that 16 -inch- diameter augercast piles be used for supporting the proposed building. Our recommended allowable vertical bearing and uplift capacities for 16- inch - diameter augercast piles are as follows: LIU & ASSOCIATES, INC. January 25, 2006 Proposed Retail Building L &A Job No. 6A002 Page 11 a Pile Embed. Allow. Comp. Allow. Uplift Length, Feet Capacity, Kips Capacity, Kips 12 25 15 14 35 22 16 46 26 18 56 35 20 70 42 a Pile embedment length is the length of piles penetrated into the very dense Kame terrace deposit underlying the loose to medium dense alluvium deposits. The augercast piles should have a minimum penetration of 12 feet into the underlying very -dense Kame terrace deposits. No reduction in pile capacities is required if the pile spacing is kept at least three times the pile diameter. A one -third increase in the above allowable pile capacities can be used when considering short -term transitory wind or seismic loads. We estimate that with the building supported on augercast piles, the total maximum post - construction settlement should be about 3/8 inch or less, and the maximum differential settlement across the building width should be 1/4 inch or less. Calculation of lateral resistance of the augercast piles may he based on assumed average soil stratification of 22 feet of very -loose bog sediment and alluvium deposit underlain by Kame terrace deposits. A lateral modulus of subgrade reaction of 600 kcf (kips per cubic foot) for the bog sediment and alluvium deposits and of 2,000 kcf for the Kame terrace deposit may be used in calculating the lateral resistance of the piles. The allowable lateral load resistance of the piles should include a proper factor of safety on their ultimate resistance. The performance of augercast piles depends on how and to what bearing stratum the piles are installed. Since a completed augercast pile in the ground cannot he observed, it is critical that judgement and experience he used as a basis for determining the embedment length and acceptability of a pile. Therefore, we recommend that Liu & Associates be retained to monitor pile installation operation, collect and interpret installation data, and verify suitable hearing stratum. We also suggest that the contractor's equipment and installation procedure be reviewed by L &A prior to pile installation to help mitigate problems which may delay work progress. L,IU & ASSOCIATES, INC. January 25, 2006 Proposed Retail Building L &A Job No. 6A002 Page 12 ON -GRADE FLOORS Due to the very -loose bog sediment and alluvium deposit underlying the site, with tree logs mixed in the alluvium deposit, it is our recommendation that concrete floor slabs, if required, should be structural slabs supported on grade beams capping the augercast piles. Where moisture control is critical, the floor slabs should be poured on a capillary break placed on compacted unyielding subgrade soils. The capillary break should consist of a minimum four- inch -thick layer of free- draining gravel or crushed rock containing no more than 3% by weight passing the No. 4 sieve. A vapor barrier, such as a 6 -mil plastic membrane, may be placed over the capillary break, as required, to keep moisture from migrating upwards. PAVEMENTS Performance of driveway and parking lot pavement is critically related to the conditions of the subgrade soils underlying the pavement. It is economically impractical to excavate out all the very -loose bog sediment and alluvium deposit, which may be from 14 to 24 feet thick, and replaced them with structural fill to support pavement. For the construction of driveway and parking lot pavement, we recommend that the surficial fill under the existing pavement be over - excavated for at least 3 feet, and the exposed soils are then compacted to a non - yielding state with a vibratory mechanical compactor. The over - excavation is then backfilled with structural fill to finished subgrade. A minimum 8 -inch- thick, crushed rock base (CRB), consisting of 7/8- inch -minus crushed rock, compacted to a non- yielding state, should be constructed- over the structural fill. The crushed rock base should be topped with a 3- inch -thick asphalt treated base (ATB) and 2- inch -thick Class B asphalt concrete (AC). With the very -loose bog sediment and alluvium deposit underlying the driveway and parking lot, maintenance and repair of pavement may be required every few years. UTILITIES Trenches cut in surficial loose fill and the underlying very -loose bog sediment and alluvium deposit for installation of underground utilities may cave easily. Trenches should be shored with LIU & ASSOCIATES, INC. January 25, 2006 Proposed Retail Building L &A Job No. 6A002 Page 13 trench blocks or other methods to protect workers in the trenches. Utility trenches should be backllled with structural rill in accordance with recommendations in the STRUCTURAL FILL section of this report. DRAINAGE CONTROL Runoff From Hillside A steady stream of runoff down from the hillside west of the site was observed flowing onto the parking lot during subsurface exploration. An interceptor trench drain should he installed along the west boundary of the site to intercept and chain away this runoff. Building Footprint Excavation Groundwater may he encountered during excavation of the building footprint. If encountered, the bottom of the building footprint excavation should be sloped and ditches excavated along the bases of the cut slopes to direct collected groundwater into a sump pit from which water can be pumped out of the building footprint excavation. A layer of 4 -to -6 -inch rock spalls should he placed over suhgrade soils, as required, to provide a working surface for construction equipment and workers. Surface Drainage Final site grades should allow storm runoff to be drained away from the building. We suggest the unpaved finish ground be sloped at a gradient of three percent minimum for a distance of at least 10 feet away from the building. Pavements surrounding the building should have sufficient slope to drain storm runoff away from the building. Roof runoff should he collected by an underground drain line system. Runoff over the pavements should he captured by catch basins. Collected water by the underground drain line system and catch basins should be tightlined to drain into a storm sewer or a suitable stormwater disposal facility. LIU & ASSOCIATES, INC. January 25, 2006 Proposed Retail Building L &A Job No. 6A002 Page 14 HAZARDS The site is nearly flat and the risk for landslide to occur on the site should be non - existent. The effect of liquefaction of the surficial loose to medium alluvium deposits on the building will be nullified by supporting the building on augercast piles penetrating into the underlying very -dense Kame terrace deposits. Storm runoff during construction will be confined in the pit of building footprint excavation surrounded by adjacent parking pavement, and erosion hazard during construction will be minimal. LIMITATIONS This report has been prepared for the specific application to this project .for the exclusive use by Decker Development and Construction, and their associates, representatives, consultants and contractors. We recommend that this report, in its entirety, be included in the project contract documents for the information of the prospective contractors for their estimating and bidding purposes. The conclusions and interpretations in this report, however, should not be construed as a warranty of the subsurface conditions. The scope of this study does not include services related to construction safety precautions and our recommendations are not intended to direct the contractor's methods, techniques, sequences or procedures, except as specifically described in this report for design considerations. Our recommendations and conclusions are based on soil conditions encountered in the test borings, our engineering analyses, and our experience and engineering judgment. The conclusions and recommendations are professional opinions derived in a manner consistent with the level of care and skill ordinarily exercised by other members of the profession currently practicing under similar conditions in this area. No warranty, expressed or implied, is made. The site subsurface conditions encountered in the test borings may vary from those actually encountered during construction. The nature and extent of such variations may not become LIU & ASSOCIATES, INC. January 25, 2006 Proposed Retail Building L &A Job No. 6A002 Page 15 evident until construction starts. If variations appear then, we should be retained to re- evaluate the. recommendations of this report, and to verify or modify them in writing prior to proceeding further with construction. CLOSURE We are pleased to be of service to you on this project. Please call if you have any questions regarding this report or need further consultation. PLATES AND ILLUSTRATIONS 1. Vicinity Map 2. Site and Exploration Location Plan 3: Unified Soil Classification System 4, 4A, 5, 5A and 6 - Boring Logs Yours very truly, LIU�Ya, ASSOCIATES, INC. J. S. (Julian) Liu, Ph.D., P.E. Consulting Geotechnical Engineer LIU & ASSOCIATES, INC. r.(;_ - 39TH ". .. `tat a - - SS Si r .178:7111 PH' J �(T"7,r :33 `yid 1 t tk �X,, .A *4s �s Y�a�'�t • ®EYS �i, '•`3 t �� 1:..1 y'F - \:.J 1.1,1'~1 `i.'� Y �ky�..." • s•- R:K11�Rr�nr% .z -.,- .0 :4‘, , 1�T6 §s ,a i `• . 1 1 1 a \\\ �--: 1 ' a1' " fiL'� 3 t� '� ®,,.®- V 1 V 7 r 'E D • x ,r ~ FOSTER. HS �, 4400 1421 144 FS ■ 5 a r 'i, `am �' A 7700 $ : P ,_ O 14JJ� 142ND 59)4: 144 z;ti ?\�\fit .; , ��� <\ 1 r'.1 - , g. x .J r 4,, , o L ' fs 3� \ ° V.54; \ r�` \` /� ....Li iY ' rA • lr,, V, J' 1 / 1 gs'„ S 1 3RD S7: ,11' . 1' I \\ 3 1'.tk �ST -: sR0'p c,\ \fir t1�e1'C„ ':.1.1,ry 660 �.• T c t ✓ c ,3 t�. G t�.-q fi 7r rit �� "Ytt. r 1s ,i e;. - ! r. u I Q • 1, ds :ay {' ys ¢< , so s� P, *G N]I a ¢ co u, S 147T - ' i3 Ic' J i 5900 ► S 144TH ..,.'°�,`� •HAZELNUT ST, "� 6C'ek s. •a PARK: , 3 z' �\ • 4' . 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SUMS No PLAZA S . 26 B COURTYA _ BY MARRIO C7 m 27 168TH S 167TH ST N •-" I't1iT; ST $ 1687 ST L. 1 ¢ , z 168TH® 170TH 168TH LN �' 5 I ST r ■'`r{ / w ` FS - nmtsr .: GRr1NeElr .. ` '� PARK � o p q- s 1 � ti '4,? v �s LIB i }, is �j 6.1 L. r. a 1j1 r.r ..k 0 4400 -PO x 1- a 5100 o cl ' I —i m "CORPORAT ,.. 172ND PROJECT DR N �o� 0 73RD ST S SITE _ �1/1 �pRPORar — HINKLER _ • S ' -t; �1 �:. BLVD. ; 1 /'181 = i 1 ~ • 175TH - o P ,1 s�� Lu c-, Q • / RENTON WETLANDS •p ST I ° PAR1a1AY 176TH ,J' `411> ST' PLAZA 1 1 s . sT J'�TM :B" sp S 178TH MI -v' g 1 S 1-7TH r r 300 °ND � a fiq o 178TH ST ssoTMaS:179TH'< 53rs TRI < v v* 5... 179TH & •I r. .Z � `r ST " .sR 1 �T ^01 r ! 1• .. . LIU & ASSOCIATES, INC. Geotechnical Engineering Engineering Geology • Earth Science VICINITY MAP PROPOSED RETAIL BUILDING 17305 SOUTHCENTER PARKWAY TUKWILA, WASHINGTON JOB NO. 6A002 DATE 1/8/2006 I PLATE 1 \ \ \ ?� \ \ N \� +20. 10 )4W ...T ,1;444,x ,t_gfeed2Aft' 4 i 0 -3 • Ni \; , \ \ \ \ \ \ \ \ \N: • , CAZ.5 7"�.$ sl9ziN15.LED 2 TZ I. �a�5� a- _ la�s,t#. LS. -\ 5+,2 f e -1%44g v r ___,-- \-) %2. •-- Ir: _Y.� \ -.4e1E .- 1 .0 1i. e5 \ g -1 \ . a'. • 2!• L .� 114' La__ 4 I i9 1 rai��r1 arm a -(31r 1 1 ICI 1 • — _ 0 "V■10.1=Le4r 116111.1111111 °UTI-I ceNiT6e, PARKWAY 21I 3 14,14,44s ! I G' ?'SlVALK LfU & ASSOCIATES, INC. Geotechnicai Engineering • Engineering Geology • Earth Science SITE AND EXPLORATION LOCATION PLAN PROPOSED RETAIL BUILDING 17305 SOUTHCENTER PARKWAY TUKWILA, WASHINGTON JOB NO. 6A002 DATE 1/8/2006 PLATE 2 --cam UNIFIED SOIL CLASSIFICATION SYSTEM MAJOR DIVISIONS COARSE - GRAINED SOILS MORE THAN 50% RETAINED ON THE NO. 200 SIEVE GRAVEL MORE THAN 50% OF COARSE FRACTION RETAINED ON NO. 4 SIEVE CLEAN GRAVEL GROUP SYMBOL GW GROUP NAME WELL - GRADED GRAVEL, FINE TO COARSE GRAVEL GP POORLY- GRADED GRAVEL GRAVEL WITH FINES GM SILTY GRAVEL GC CLAYEY GRAVEL SAND MORE THAN 50% OF COARSE FRACTION PASSING NO. 4 SIEVE CLEAN SAND SW WELL - GRADED SAND, FINE TO COARSE SAND SP POORLY - GRADED SAND SAND WITH FINES SM SILTY SAND SC CLAYEY SAND FINE - GRAINED SOILS MORE THAN 50% PASSING ON THE NO. 200 SIEVE SILT AND CLAY LIQUID LIMIT LESS THAN 50% INORGANIC ML SILT CL CLAY ORGANIC OL ORGANIC SILT, ORGANIC CLAY SILTY AND CLAY LIQUID LIMIT 50% OR MORE INORGANIC MH SILT OF HIGH PLASTICITY, ELASTIC SILT CH CLAY OF HIGH PLASTICITY, FAT CLAY ORGANIC OH ORGANIC SILT, ORGANIC SILT HIGHLY ORGANIC SOILS PT PEAT AND OTHER HIGHLY ORGANIC SOILS NOTES: 1. FIELD CLASSIFICATION IS BASED ON VISUAL EXAMINATION OF SOIL IN GENERAL ACCORDANCE WITH ASTM D2488 -83. '2. SOIL CLASSIFICATION USING LABORATORY TESTS IS BASED ON ASTM D2487 -83. 3. DESCRIPTIONS OF SOIL DENSITY OR CONSISTENCY ARE BASED ON INTERPRETATION OF BLOW -COUNT DATA, VISUAL APPEARANCE OF SOILS, AND /OR TEST DATA. SOIL MOISTURE MODIFIERS: DRY - ABSENCE OF MOISTURE, DUSTY, DRY TO THE TOUCH SLIGHTLY MOIST - TRACE MOISTURE, NOT DUSTY MOIST - DAMP, BUT NO VISIBLE WATER VERY MOIST - VERY DAMP, MOISTURE FELT TO THE TOUCH WET - VISIBLE FREE WATER OR SATURATED, USUALLY SOIL IS OBTAINED FROM BELOW WATER TABLE LIU & ASSOCIATES, INC. Geotechnical Engineering Engineering Geology • Earth Science UNIFIED SOIL CLASSIFICATION SYSTEM PLATE 3 BORING NO. B -1 Logged By: JSL 1/5/2006 Ground Elev. ± Depth ft. USCS Soil Description Sample (N) Blows/ ft. W % Other Test Type No. — 5 _ 2 -in Asphalt Pavement over 3 -in Crushed Rock Base_ SS SS SS SS SS 11 2 ]3 I4 i5 1 8 1 & 1/12" 2 3 1/18" Dark -gray, loose, silty fine SAND, trace gravel, moist (FILL) SM Dark - brown, loose, organic, silty fine SAND, trace gravel, moist (relic TOPSOIL) OL — 10 Brown, very- loose, silty fine SAND to fine sandy SILT, intermixed with dark - brown, organic, silty fine SAND, moist (BOG SEDIMENT) V' SM /ML/ OL . 15 - Same, with wood log fragment Intermixed very- loose, brown, silty fine SAND to fine sandy SILT and gray, silty fine SAND, with wood log fragments, very moist (ALLUVIUM) 20 SM /ML Gray, very-soft, fine sandy SILT, with thin fine sand interbeds, very moist (ALLUVIUM) (continued on Plate 4A) 25 30 ML LEGEND: SS - 2" O.D. Split -Spoon Sample GROUNDWATER: Seal ST - 3" O.D. Shelby -Tube Sample Water Level B - Bulk Sample Observation Well Tip LIU & ASSOCIATES, INC. Geotechnical Engineering • Engineering Geology Earth Science BORING LOG RETAIL BUILDING 17305 SOUTHCENTER PARKWAY T U KW I LA, WASHINGTON JOB NO. 6A002 DATE 1/8/2006 PLATE 4 BORING NO. B -1 (continued from Pate 4) Logged By:, JSL 1/5/2006 Ground Elev. ± Depth ft. USCS Soil Description Sample (N) Blows/ ft . W % Other Test T pe No. Gray, soft, fine sandy SILT, with thin fine sand interbeds, SS 1 SS I 6 7 21 23 & 50/5.75' \ very moist (ALLUVIUM) �- 35 _ 40 45 50 55 60 ML Gray, very- dense, fine to coarse SAND, some fine gravel, wet (fresh KAME TERRACE) fine SILT, Gray, very-hard, sandy slightly moist Boring terminated @ 36.5 ft; groundwater encountered @ 11.0 ft at completion of drilling. LEGEND: SS - 2" O.D. Split -Spoon Sample GROUNDWATER: ST - 3" O.D. Shelby -Tube Sample Water Level B - Bulk Sample ❑ Seal Observation Well Tip LIU & ASSOCIATES, INC. Geotechnical Engineering Engineering Geology Earth Science BORING LOG RETAIL BUILDING 17305 SOUTHCENTER PARKWAY TU KW I LA, WASHINGTON JOB NO. 6A002 DATE 1/8/2006 PLATE 4A BORING NO. B -2 Logged By: JSL 1/5/2006 Ground Elev. ± Depth ft. USCS Soil Description Sample (N) Blows/ ft. VV Other Test Type No. 5 _ 2 -in Asphalt Pavement + 12 -in Gravelly Sand base �SS SS SS SS SS 1 2 3 4 5 10 1/18" 1/18" 6 45 Gray, loose, fine to medium SAND, moist (FILL) SP Brown, very- loose, organic, silty fine SAND to silty PEAT, with wood chips and fine roots, moist (BOG SEDIMENT) - Same - Same OL 10 15 20 Gray, fine to coarse SAND, with wood tog @ 25.7 ft, moist (high blow count may be from hitting wood log) (continued on 5A) SW 25 30 LEGEND: SS - 2" O.D. Split -Spoon Sample GROUNDWATER: 11 Seal ST - 3" O.D. Shelby -Tube Sample Water Level B - Bulk Sample 11 Observation Well Tip LIU & ASSOCIATES, INC. Geotechnical Engineering • Engineering Geology Earth Science BORING LOG RETAIL BUILDING 17305 SOUTHCENTER PARKWAY T U KW I LA, WASHINGTON JOB NO. 6A002 DATE 1/8/2006 PLATE 5 BORING NO. B -2 (continued from Plate 5) Logged By: JSL 1/5/2006 Ground Elev. ± Depth ft. USCS Soil Description Sample (N) Blows/ ft. W % Other Test T pe No. 5 _ 10 15 20 25 30 SP Gray, medium - dense, fine to medium SAND, very moist (fresh KAME TERRACE) - Same, grades to dense and brown -gray in color SS SS 6 7 28 44 Boring terminated at 36.5 ft; groundwater table encountered @ 6.5 ft at completion of drilling. LEGEND: SS - 2" O.D. Split -Spoon Sample GROUNDWATER: ST - 3" 0.0. Shelby -Tube Sample Water Level B - Bulk Sample Seal Observation Well Tip LIU & ASSOCIATES, INC.. Geotechnical Engineering Engineering Geology Earth Science BORING LOG RETAIL BUILDING 17305 SOUTHCENTER PARKWAY T U KW I LA, WASHINGTON JOB NO. 6A002 DATE 1/8/2006 PLATE 5A BORING NO. B -3 Logged By: JSL 1/5/2006 Ground Elev. ± Depth ft. USCS Soil Description Sample (N) Blows/ ft. W Other Test Type No. 5 _ 2 -in Asphalt Pavement + 24 -in Crushed Rock Base ]ssi ISS2 1 SS 1 SS 1 SS 3 4 5 31 3 4 6 45 SW Gray, dense, gravelly, fine to coarse SAND, wet (FILL) 10 SM /ML Gray, very - loose, silty fine SAND to fine sandy SILT, occasional roots and wood chips, moist (ALLUVIUM) 15 SM /ML Gray, very- loose, interbedded silty fine to medium SAND and SILT, occasional roots and wood chips, very-moist to wet (ALLUVIUM) 20 25 — 30 SP /ML Loose, interbedded gray, fine to medium SAND and brown - gray SILT, occasional wood chips, moist to very-moist (ALLUVIUM) SP Gray, very- dense, fine to medium SAND, wet Test boring terminated @ 30.0 ft due to sand boiling. Groundwater table @ 7.0 at completion of drilling. LEGEND: SS - 2" O.D. Split -Spoon Sample GROUNDWATER: 11 Seal • ST - 3" O.D. Shelby -Tube Sample Water Level B - Bulk Sample 11 Observation Well Tip LIU & ASSOCIATES, INC. Geotechnical Engineering • Engineering Geology Earth Science BORING LOG RETAIL BUILDING 17305 SOUTHCENTER PARKWAY TU KW I LA, WASHINGTON JOB NO. 6A002 DATE 1/8/2006 PLATE 6 CITY OF TUKWILA - — Department of Community Development , ENVIRONMENTAL 6300 Southcenter Boulevard, Tukwila, WA 98188.... 7� T VIE �;C X71 Telephone: (206) 431 -3670 FAX (206) 431 -3665 -; 1<L E -mail: tukvlan(7a,ci.tukwila.wa.us RECEIVED. SEP 2 7 2006 APPLICATION , "' "' ` ' FOR STAFF USE ONLY SIERRA TYPE P-SEPA Planner: ,. File Number:` 5 06 _ (jl E, Application Complete ' (Date: ) Project File Number: Application Incomplete (Date: ) Other File Numbers: /___06-47-7 t L06-068 NAME . OF PROJECT/DEVELOPMENT: S C S J / &,, is . . LOCATION OF PROJECT/DEVELOPMENT: (Give street address or, if vacant, indicate lot(s), block and, subdivision, access street, and nearest intersection: LIST ALL 10 DIGIT PARCEL NUMBERS. 26 Z Soy - 9ozy -b-t 73 4S, Soodgce,. . Adui. t T kw. /4 fivail Quarter: .S Section: U Township: Z3 Range:. cit611 y 4 .1,4 (This information may be found on your tax statement.) • • DEVELOPMENT COORDINATOR The individual who: ' • has decision making authority on behalf of the applicant in meetings with City staff, ,• ,_has ,full responsibility for identifying and satisfying all relevant and sometimes overlapping development standards, an • is the primary contact with the City, to whom all notices and reports will be sent. -, ; Name: ieot Dec;kc. i 4 tV f AWE 2 L c Address: // 7 Oast Lov,ta ST »Lo, 919/0-1_. Phone: (204) 59S ->W. • E -mail: Becket Signature: Net - G: APPHAN LANDUSE.APPISEPAAPP.DDC, 09/11/03 FAX: (2045 SYS -y9S2- Date: 9/2 7/06 173oSSodM«.av Pkwy • • RECEIVED fCT 0 5 2006 City of Tukwila COMMUNITY DEVELOPMENT Endangered Species Act Screening Checklist LO6 --c%7 Date: /0 /03-10 Applicant Name: gme LC u„s /0 .�C Sc3 Li-c. Street Address: I / 7 EasI- 4ou1l, s r# 23 o Si I-c City, State, Zip: Sep. // /e / GOA 75idi_ Telephone: (Luc,) SYS- yyc'1 Directions This Screening Checklist has been designed to evaluate the potential for your project to result in potential "take" of Chinook salmon, Coho salmon, or Cutthroat trout as defined by Section 9 of the Endangered Species Act. The checklist includes a series of "Yes" or "No" questions about your project, organized into four parts. Starting with Part A on Page 1, read each question carefully, circle "Yes" or "No," and proceed to the next question as directed by the checklist. To answer these questions, you may need to refer to site plans, grading and drainage plans, critical areas studies, or other documents you have prepared for your project. The City will evaluate your responses to determine if "take" is indicated. P: \Planning Forms \Applications \SEPA_App - June 2006.doc June 19, 2006 Part A: Please review and answer each question carefully. Consider all phases of your project including, but not limited to, construction, normal operation, potential emergency operation, and ongoing and scheduled maintenance. Continue to the next question as directed for each No or Yes answer. 1 -0 Will the project require any form of grading? Grading is defined as any excavating, filling, clearing, or creation of impervious surface, or any combination thereof, which alters the existing ground surface of the earth (TMC 18.06.370). Please circle appropriate response. NO - Continue to Question 2 -0 $ Continue to Question 1 -1 (Page 3) 2 -0 Will the project require any form of clearing? Clearing means the removal or causing to be removed, through either direct or indirect actions, any vegetation from a site (18.06.145). Please circle appropriate response. NO - Continue to Question 3 -0 Continue to Question 2 -1 (Page 4) 3 -0 Will the project require work, during any time of the project, below the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers or in wetlands? Ordinary high water mark is the mark that is found by examining the bed and banks of a stream and ascertaining where the presence and action of waters are so common and usual as to distinctly mark the soil from that of the abutting upland, in respect to vegetation (see TMC Chapter 18.06, Page 18 -15). Please circle appropriate response. NO Continue to Question 4 -0 YES - Continue to Question 3 -1 (Page 5) 4 -0 Will the project result in the processing or handling, storage, or treatment of hazardous substances? This does not include the proper use of fuel stored in a vehicle's fuel tank. Hazardous substances are any liquid, solid, gas, or sludge, including any material, substance, product, commodity, or waste, regardless of quantity, that exhibits the characteristics or criteria of hazardous waste as defined by Washington Administrative Code 173 -303 (TMC 18.06.385). This includes fuel or other chemicals stored on -site during construction. Please circle appropriate response. NO - ontinue to Question 5 -0 YES - Continue to Question 5 -0 5 -0 Will the project result in the withdrawal, injection, or interception of groundwater? Examples of projects that may affect groundwater include, but are not limited to: construction of a new well, change in water withdrawals from an existing well, projects involving prolonged construction dewatering, projects installing French drains or interceptor trenches, and sewer lines. For the purpose of this analysis, projects that require a geotechnical report pursuant to the requirements of TMC 18.45.060 or would require a geotechnical report if not exempt should answer Yes. Please circle appropriate response. NO - ontinue to Question 6 -0 YES - Continue to Question 6 -0 P: \Planning Forms \Applications \SEPA_App - June 2006.doc June 19, 2006 • City of TukwilaSA Screening Checklist Part A (continued) 6 -0 Will the project involve landscaping or re- occurring outdoor maintenance that includes the regular use of fertilizers, pesticides, or herbicides? This does not include the one -time use of transplant fertilizers. Landscaping means natural vegetation such as trees, shrubs, groundcover, and other landscape materials arranged in a manner to produce an aesthetic effect appropriate for the use of the land (TMC 18.06.490). For the purpose of this analysis, this includes the establishment of new lawn or grass. Please circle appropriate response. NO — Checklist Complete Checklist Complete Part B: Please answer each question below for projects that include grading. Review each question carefully, considering all phases of your project including, but not limited to construction, normal operation, potential emergency operation, and ongoing and scheduled maintenance. Continue to the next question as directed for each No or Yes answer. 1 -1 Will the project involve the modification of a watercourse bank or bank of the Green/Duwamish or Black Rivers between the ordinary high water mark and top of bank? This includes any projects that will require grading on any slope leading to a river or stream, but will not require work below the ordinary high water mark. Work below the ordinary high water mark is covered in Part C. Please circle appropriate response. Continue to Question 1 -2 YES - Continue to Question 1 -2 1 -2 Could the construction, operation, or maintenance of the project result in sediment transport off site or increased rates of erosion and /or sedimentation in watercourses, the Green/Duwamish rivers, or the Black River? Most projects that involve grading have the potential to result in increased erosion and/or sedimentation as a result of disturbances to the soil or earth. If your project involves grading and you have not prepared a Temporary Erosion and Sedimentation Control Plan specifically designed to retain 100 percent of the runoff (including during construction) from impervious surface or disturbed soils, answer Yes to this question. If your project is normally exempt under the Tukwila Municipal Code and would not require the preparation of a Temporary Erosion and Sedimentation Control Plan, BUT may still result in erosion or sediment transport off site or beyond the work area, answer Yes to this question. Please circle appropriate response. Continue to Question 1 -3 YES - Continue to Question 1 -3 1 -3 Will the project result in the construction of new impervious surfaces? Impervious surfaces include those hard surfaces which prevent or restrict the entry of water into the soil in the manner that such water entered the soils under natural conditions prior to development; or a hard surface area that causes water to run off the surface in greater quantity or at an increased rate of flow from the flow presented under natural conditions prior to development. Such areas include, but are not limited to, rooftops, asphalt or concrete paving, compacted surfaces, or other surfaces that similarly affect the natural infiltration or runoff patterns existing prior to development (TMC 18.06.445). Please circle appropriate response. NO - Continue to Question 2 -0 (Page 2) Continue to Question 1 -4 fi • City of Tukwila E,SA Screening Checklist Part B (continued) 1 -4 Will your project generate stormwater from the creation of impervious surfaces that will not be infiltrated on site? For the purpose of this analysis, infiltration includes the use of a stormwater treatment and management system intended to contain all stormwater on site by allowing it to seep into pervious surface or through other means to be introduced into the ground. If your project involves the construction of impervious surface and does not include the design of a stormwater management system specifically designed to infiltrate stormwater, answer Yes to this question. Please circle appropriate response. NO - Continue to Question 2 -0 (Page 2) Continue to Question 2 -0 (Page 2) Part C: Please review each question below for projects that include clearing. Review each question carefully, considering all phases of your project including, but not limited to construction, normal operation, potential emergency operation, and ongoing and scheduled maintenance. Continue to the next question as directed for each No or Yes answer. 2 -1 Will the project involve clearing within 200 feet of the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? Please circle appropriate response. Continue to Question 3 -0 (Page 2) YES - Continue to Question 2 -2 2 -2 Will the project involve clearing of any trees within 200 feet of the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? A tree is defined by TMC 18.06.845 as any self - supporting woody plant, characterized by one main trunk, with a potential diameter - breast- height of 2 inches or more and potential minimum height of 10 feet. Please circle appropriate response. NO Continue to Question 2 -3 YES - Continue to Question 2 -3 2 -3 Will the project involve clearing of any evergreen trees from within 200 feet of the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? For the purpose of this analysis evergreen means any tree that does not regularly lose all its leaves or needles in the fall. Please circle appropriate response. NO - Continue to Question 2 -4 YES - Continue to Question 2 -4 2 -4 Will the project involve clearing within 100 feet of the ordinary high water mark of a w ercourse or the Green/Duwamish or Black Rivers? Please circle appropriate response. NO Continue to Question 3 -0 (Page 1) YES - Continue to Question 2 -5 2 -5 Will the project involve clearing within 40 feet of the ordinary high water mark of a w. ercourse or the Green/Duwamish or Black Rivers? Please circle appropriate response. dr, Continue to Question 3 -0 (Page 2) YES - Continue to Question 3 -0 (Page 2) • City of TukwinSA Screening Checklist Part D: Please review each question below for projects that include work below the ordinary high water mark of watercourses or the Duwamish /Green or Black Rivers or in wetlands. Review each question carefully, considering all phases of your project including, but not limited to, construction, normal operation, potential emergency operation, and ongoing and scheduled maintenance. Continue to the next question as directed for each No or Yes answer. 3 -1 Will the project involve the direct alteration of the channel or bed of a watercourse, the Green/Duwamish rivers, or Black River? For the purpose of this analysis, channel means the area between the ordinary high water mark of both banks of a stream, and bed means the stream bottom substrates, typically within the normal wetted -width of a stream. This includes both temporary and permanent modifications. Please circle appropriate response. NO - Continue to Question 3 -2 YES - Continue to Question 3 -2 3 -2 Will the project involve any physical alteration to a watercourse or wetland connected to the Green/Duwamish River? For the purpose of this analysis, "connected to the river means" flowing into via a surface connection or culvert, or having other physical characteristics that allow for access by salmonids. This includes impacts to areas such as sloughs, side channels, remnant oxbows, ditches formed from channelized portions of natural watercourses or any area that may provide off channel rearing habitat for juvenile fish from the Duwamish River. This includes both temporary construction alterations and permanent modifications. Watercourses or wetlands draining to the Green/Duwamish River that have a hanging culvert, culvert with a flap gate, diversion, or any entirely man-made or artificial structure that precludes fish access should answer Yes to this question. Please circle appropriate response. NO - Continue to Question 3 -3 YES - Continue to Question 3 -3 3 -3 Will the project result in the construction of a new structure or hydraulic condition that could be a barrier to salmonid passage within the watercourse or the Green/Duwamish or Black Rivers? For the purpose of this analysis, a barrier means any artificial or human modified structure or hydraulic condition that inhibits the natural upstream or downstream movement of salmonids, including both juveniles and adults. Please circle appropriate response. NO - Continue to Question 3 -4 YES - Continue to Question 3-4 3 -4 Will the project involve a temporary or permanent change in the cross - sectional area of a watercourse or the Green/Duwamish or Black Rivers? For the purpose of this analysis, the cross- sectional area is defined as a profile taken from the ordinary high water mark on the right bank to the ordinary high water mark on the left bank. Please circle appropriate response. NO - Continue to Question 3 -5 YES - Continue to Question 3 -5 3 -5 Will the project require the removal of debris from within the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? For the purpose of this analysis, debris includes, but is not limited to fallen trees, logs, shrubs, rocks, piles, rip -rap, submerged metal, and broken concrete or other building materials. Projects that would require debris removal from a watercourse or the Green/Duwamish or Black Rivers as part of a maintenance activity should answer Yes to this question. Please circle appropriate response. • City of Tukwilf1SA Screening Checklist NO - Continue to Question 3 -6 YES - Continue to Question 3 -6 3 -6 Will the project result in impacts to watercourses or wetlands that have a surface connection to another watercourse or the Green /Duwamish or Black Rivers but do not contain habitat conditions that support salmonid use? Such areas may include, but not be limited to hillside seeps and wetlands isolated from the watercourse or river that have a surface water connection to the watercourse or river but are not assessable, nor would be assessable to salmonids under natural conditions. Wetlands with a "functions and values" rating for baseflow /groundwater support of 9 and above (or moderate) as described in Cooke (1996) should be included. Please circle appropriate response. NO - Continue to Question 3 -7 YES - Continue to Question 3 -7 3 -7 Will the project include the construction of artificial waterways or wetlands connected to a watercourse containing salmonids? For the purpose of this analysis, the construction of artificial waterways or wetlands includes wetlands, channels, sloughs, or other habitat feature created to enhance wildlife use, particularly waterfowl use, or may be attractive to wildlife, particularly waterfowl. Please circle appropriate response. NO - Continue to Question 3 -8 YES - Continue to Question 3 -8 3 -8 Will the project include bank stabilization? For the purpose of this analysis, bank stabilization includes, but is not limited to, rip -rap, rock, log, soil, or vegetated revetments, concrete structures, or similar structures. Please circle appropriate response. NO - Continue to Question 4 -0 (Page 2) YES - Continue to Question 4 -0 (Page 2) STATE ENVIRONMENTAL CHECKLIST Please respond to all questions. Use separate sheets as necessary. An electronic version of this form is also available from the Department of Community Development. Applicant Responses: A. BACKGROUND 1. Name of proposed project, if applicable: SC -5 Retail Building 2. Name of Applicant: Brad Decker, Manager of ERRE Limited Liability Company. 3. Date checklist prepared: 9/06 4. Agency requesting checklist: City of Tukwila 5. Proposed timing or schedule (including phasing, if applicable): Begin construction Winter/ Spring '06/ 07 and complete later in year. 6. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain. No 7. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. Geotechnical Report will be prepared. Traffic Report will be prepared. 8. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your proposal? If yes, explain. There is a building permit issued and construction proceeding on 17275 Southcenter Parkway, North of this site. Agency Comments RECEIVED SEP 2 5 2006 COMMUNITY DEVELOPMENT Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments 9. List any government approvals or permits that will be needed for your proposal. Board of Architectural Review Approval SEPA Determination of Non - Significance Demolition Permit Building Permits 10. Give brief, complete description of your proposal, including the proposed uses and the size of the project and site. There are several questions later in this checklist that ask you to describe certain aspects of your proposal. You do not need to repeat those answers on this page. Demolition of the existing 6,100sf Tony Roma's Restaurant and construction of a new ±26,000sf retail building and related site work. 11. Location of the proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, if any, the tax lot number, and section, township, and range. If a proposal would occur over a range of area, provide the range or boundaries of the site(s). Provide a legal description, site plan, vicinity map, and topographic map, if reasonably available. While you should submit any plans required by the agency, you are not required to duplicate maps or detailed plans submitted with any permit applications related to this checklist. Address: 17305 Southcenter Parkway Currently Tony Roma's Restraunt Tax lot Number 262 - 304 - 9024 -02 12. Does the proposal lie within an area designated on the City's Comprehensive Land Use Policy Plan Map as environmentally sensitive? Not sure? Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments B. ENVIRONMENTAL ELEMENTS 1. Earth a. General description of the site (circle one): Flat, rolling, hilly, steep slopes, mountainous, other: Flat is underlined. The existing and proposed building site is flat and the existing and proposed undeveloped portion to west is steep. b. What is the steepest slope on the site (approximate percent slope)? The undeveloped portion to west has slopes to 50% (2 horizontal to 1 vertical). c. What general types of soils are found on the site (for example, clay, sand, gravel, peat, muck)? If you know the classification of agricultural soils, specify them and note any prime farmland. Typical valley alluvial soil. d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. Not known. There exists a manmade steep slope on western portion of site as part of Interstate 5 construction. e. Describe the purpose, type, and approximate quantities of any filling or grading proposed. Indicate source of fill. We believe this is a near balanced site, although the grading plan is not finalized at this writing. Approximately 500 yard of structural fill is anticipated under building and a 100 yards gravel base course is anticipated paving along with the removal of 500 yards of non suitable soil. • • Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe. g. Yes, but will be controlled as part of temporary erosion and control plan and by construction management. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? ±60% existing. and ±85% proposed of TUC zoned site h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any: Erosion will be contained on site per conventional erosion control techniques. Landscaping and the storm drainage system will eliminate erosion issues after construction. 2. Air a. What types of emissions to the air would result from the proposal (for example, dust, automobile odors, industrial wood smoke) during construction and when the project is completed? If any, generally describe and give approximate quantities if known. Emission generated would be principally from construction - related activities; these would include dust generated from the grading and clearing of the project site and vehicle emissions associated with the various construction vehicles and equipment. After the proposed building is built, emission would be limited to vehicles. b. Are there any off -site sources of emissions or odor that may affect your proposal? If so, generally describe. There are vehicle exhaust emission from surrounding roads, but we do not anticipate this will affect the project. • • Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comment: c. Proposed measures to reduce or control emissions or other impacts to air, if any: None. 3. Water a. Surface: 1. Is there any surface water body on or in the immediate vicinity of the site (including year -round and seasonal streams, saltwater, lakes, ponds, wetlands)? If yes, describe type and provide names. If appropriate, state what stream or river it flows into. None. Green River is a few miles to east. 2. Will the project require any work over, in, or adjacent to (within 200 feet) the described waters? If yes, please describe and attach available plans. No. 3. Estimate the amount of fill and dredge material that would be placed in or removed from surface water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material. None. • • Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments 4. Will the proposal require surface water withdrawals or diversions? Give general description, purpose, and approximate quantities, if known. No significant change from existing conditions. 5. Does the proposal lie within a 100 -year floodplain? If so, note location on the site plan. Yes, site is mapped as Zone X on FEMA map 530330959F, last revised 5/16/95. Zone X is within the 100 -year flood plane, but controlled by levees. 6. Does the proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge. No. b. Ground: 1. Will ground water be withdrawn, or will water be discharged to ground water? Give general description, purpose, and approximate quantities, if known. No. Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comment 2. Describe waste materials that will be discharged into the other sources, if any (for example: Domestic sewage; industrial from containing thus or following chemicals...; agricultural; etc). Describe the general size of the system, the number of such systems, the number of houses to be served (if applicable), or the number of animals or humans the system(s) are expected to serve: None. c. Water Runoff (including storm water): 1. Describe the source of runoff (including storm water) and method of collection and disposal, if any (include quantities, if known). Where will this water flow? Will this water flow? Will this water flow into other waters? If so, describe. The storm water from the roof shall be collected and tight lined into a level 1 detension system and then tight lined into city's storm system. The storm water from the parking lot shall be collected and routed through a storm cepter to clean the water then tight lined into the level 1 detension system. 2. Could waste materials enter ground or surface waters? If so, generally describe. No. d. Proposed measures to reduce or control surface, ground, and runoff water impacts, if any: All water from impervious surfaces shall be tight lined into a level 1 detension system. Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comment; 4. Plants a. Check or circle (we underlined) types of vegetation found on the site: X Deciduous tree: alder, maple, aspen, other X Evergreen tree: fir, cedar, pine, other X Shrubs X Grass Pasture Crop or grain Wet soil plants: cattail, buttercup, bulrush, skunk cabbage, other Water plants: water lily, eelgrass, milfoil, other Other types of vegetation b. What kind and amount of vegetation will be removed or altered? 95% of existing vegitation to be removed, except the vegitation on the slope above retaining wall. c. List threatened or endangered species known to be on or near the site. None known. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any: Native landscaping per code is added on the developed portion of site. The much larger native growth on west side to remain undeveloped. Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comment: 5. Animals a. Circle (we underlined) any birds or animals which have been observed on or near the site or are known to be on or near the site: Birds: Mammals Fish Other Hawk, heron, eagle, songbirds, other: sparrows, crows Deer, bear, elk, beaver, other: Bass, salmon, trout, herring, shellfish, other: squirrels, other rodents None observed or categoried but we know birds such as sparrows and crows and small small mammals such as squirrels are in the area. b. List any threatened or endangered species known to be on or near the site. Not known. c. Is the site part of a migration route? If so, explain. The site is within the Pacific Flyway Route. d. Proposed measures to preserve or enhance wildlife, if any: We are preserving most of the hillside in existing established native landscaping which preserves habitat for birds and small rodents. Plus proposed new plant material will provide additional shade, cover and sources of food. 6. Energy and Natural Resources a. What kinds of energy (electric, natural gas, oil, wood stove, solar) will be used to meet the completed project's energy needs? Describe whether it will be used for heating, manufacturing, etc. Electrical for lighting and convenience outlets. Gas for heating. • • Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comment; b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. No. c. What kinds of energy conservation features are included in the plans of this proposal? List other proposed measures to reduce or control energy impacts, if any: Building envelope insulation and insulated glass. There will be energy efficiency features on the HVAC system, but that is not designed as yet. 7. Environmental Health a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste, that could occur as a result of this proposal? If so, describe. Very unlikely, as there are no unusual construction or post - construction hazards. 1. Describe special emergency services that might be required. Very unlikely, no unusual construction or post- construction hazards for this retail use. 2. Proposed measures to reduce or control environmental health hazards, if any: No unusual measures are proposed. Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comment: b. Noise 1. What types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other)? Traffic. 2. What types and levels of noise would be created by or associated with the project on a short-term or long -term basis (for example: traffic, construction, operation, other)? Indicate what hours noise would come from the site. Construction noise would be of a short -term basis and would be associated with the clearing, grading and construction of the building. Post construction noise would be car traffic, a minor incremental addition to the existing noise. 3. Proposed measures to reduce or control noise impacts, if any: Construction noise will be during daylight hours per code. Post construction surrounding traffic noise will be dampened through the use of insulated walls, roof and windows, and landscape buffers. 8. Land and Shoreline Use a. What is the current use of the site and adjacent properties? The site and surrounding buildings are commercial or TUC. b. Has the site been used for agriculture? If so, describe. It has been commercial use for a long time. Portions of site most likely were in farming at some time in the past? • • Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comment c. Describe any structures on the site. Existing 6,100sf Tony Roma's restaurant. d. Will any structures be demolished? If so, what? Yes. No structure will remain after demolishing. e. What is the current zoning classification of the site? TUC (Tukwila Urban Center) f. What is the current comprehensive plan designation of the site? TUC (Tukwila Urban Center) g. If applicable, what is the current shoreline master program designation of the site? Not applicable. h. Has any part of the site been classified as an "environmentally sensitive" area? If so, specify. The hillside to the west zoned LDR • • Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments i. Approximately how many people would reside or work in the completed project? As a projected bulk retail use staff would be likely be 5 -12, depending upon season and time of day. Customers will vary depending upon season and time of day. J• Approximately how many people would the completed project displace? Project will displace approximately 10 —15 restaurant employees k. Proposed measures to avoid or reduce displacement impacts, if any: None. 1. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any: Use and design is compatible. 9. Housing a. Approximately how many units would be provided, if any? Indicate whether high, middle, or low - income housing? None. • • Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comment: b. Approximately how many units, if any, would be eliminated? Indicate whether high, middle, or low- income housing. None. c. Proposed measures to reduce or control housing impacts, if any: None. 10. Aesthetics a. What is the tallest height of any proposed structure(s), not including antennas; what is the principal exterior building material(s) proposed? Approximately 37'. The principal exterior material is stucco & CMU with intergral color and textures varied to create architectural pattern. Stucco is the principal material at the entry facade. b. What views in the immediate vicinity would be altered or obstructed? None. c. Proposed measures to reduce or control aesthetic impacts, if any: The project requires approval by the Board of Architectural Review. We will propose a pleasing retail design consistent with the neighborhood. • • Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments 11. Light and Glare a. What type of light or glare will the proposal produce? What time of day would it mainly occur? The project will have exterior lighting as necessary to serve parking lot areas, building entries, and path lighting; plus interior lighting. Interior lighting will spill to the exterior and we will have decorative exterior sconces, but we do not consider this glare. Otherwise exterior lighting will have glare cut -off features. Glare will come from vehicles accessing the site. b. Could light or glare from the finished project be a safety hazard or interfere with views? No. We do not consider glare from vehicles a hazard. c. What existing off -site sources of light or glare may affect your proposal? None. d. Proposed measures to reduce or control light and glare impacts, if any: All exterior parking lot fixtures will be shielded to prevent light spillage or glare to adjoining properties and roadways. Although modest reflections will occur on glass, it is a non - reflective type to eliminate glare issues. New and existing landscaping will significantly reduce glare potential. 12. Recreation a. What designed and informal recreational opportunities are in the immediate vicinity? Shopping and eating. • • Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comment: b. Would the proposed project displace any existing recreational uses? If so, describe. None. c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any: None. 13. Historic and Cultural Preservation a. Are there any places or objects listed on, or proposed for, National, State, or Local preservation registers known to be on or next to the site? If so, generally describe. None. b. Generally describe any landmarks or evidence of historic, archaeological, scientific, or cultural importance known to be on or next to the site. None. c. Proposed measures to reduce or control impacts, if any: None. • • Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comment 14. Transportation a. Identify public streets and highways serving the site, and describe proposed access to the existing street system. Show on site plans, if any. I -5 and I -405 are the primary regional access roads to Southcenter parkway. b. Is the site currently served by public transit? If not, what is the approximate distance to the nearest transit stop? Southcenter Parkway at S168th, about 5 blocks to north. Not very convenient. c. How many parking spaces would the completed project have? How many would the project eliminate? 50 provided plus 2 loading stalls on site and 20 parking stall off site. 84 existing. d. Will the proposal require any new roads or streets, or improvements to existing roads or streets, not including driveways? If so, generally describe (indicate whether public or private). No. Using existing driveway. e. Will the project use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. No. • • Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comment f. How many vehicular trips per day would be generated by the completed project? If known, indicate when peak volumes would occur. 133 Daily trips per the Transpo Group g. Proposed measures to reduce or control transportation impacts, if any: Remove fast food restaurant and reduce daily trips by 381 daily trips per the Transpo Group 15. Public Services a. Would the project result in an increased need for public services (for example: fire protection, police protection, health care, schools, other)? If so, generally describe. Yes, small incremental increases typical of new projects of this type. b. Proposed measures to reduce or control direct impacts on public services, if any. None. 16. Utilities a. Circle utilities currently available at the site: electricity, natural gas, water, refuse service, telephone, sanitary sewer, septic system other: Please respond to all questions. Use separate sheets as necessary. Applicant Responses: b. Describe the utilities that are proposed for the project, the utility providing the service, and the general construction activities on the site or in the immediate vicinity which might be needed. Sewer: City of Tukwila — connect to existing. Water: City of Tukwila — connect to existing. Electrical: Puget Sound Energy — connect to existing. Natural Gas: Puget Sound Energy — connect to existing. Telephone: by tenant C. SIGNATURE The above answers are true and com.lete to the best of my knowledge. I understand that the lead agency is •'ng on them to make rts • ision. Brad Decker, Manager. 5/z ZwG Date Submitted: i b., r-3a. L AoBo 6c 1 o 3b. 1b a • 3b. 1 a. 3b. 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Steel Tube Trellis 2c CMU Wainscot MMMMMMMM M•1111•1 • W E S T E L E V A T I O N • Sherman WJhams 5W2019 "June Bug" Sherman Wuhams 5W2020 - Adirondak" Mutual Matenals "Burgandy Red" in split - face texture Mutual Matenals "Mesa Tan° Split -face texture Sherman Williams 5W2023 'Threshold Taupe" Sherman Williams 5W2024 "Gobi Berge" , Sherman Willams 5W2022 "Dry Dock" Clear anodized storefront with clear insulated glass Sherman Williams 5W2022 "Dry Dock" Sherman Williams 5W2940 "Bridgeport" Nu -ray Metal Products. Inc. 'Dark Bronze' Sherman Williams 5W2802 "Rookwood Red" (see lighting fixture schedule) Color as selected m light beige range Sherman Williams 5W2020 "Adirondak" Mutual Materials "Mesa Tan" smooth testure RE SEP 25 ?005 bev bET a 0 T. 2 0 c 0 c O 0. v m eco V u • - 0 o LANCE MUELLER 130 LAKESIDE • SEATTLE, WA 98122 • 206 325 2553 (.0.)ZJ 0 'CC sheet ti A3.0 W w 1 Z 1b., r3 2o 2b 8. 2a 7. 8. 2o 6 3c. 1 a 6c. 3b. 1 a 'sma BOY 6c. 1 a 3b c 1 3 1b 30. 1 3b. 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Storefront and glass 5. Metal Fr:r or:e. 4 11. M doors paint Ga. Canopy Co'o -s Gb. Canopy Coo Gc. Canopy Coos 7. Sconce light fixture B. Precast Concrete or CMU Cap 9. Steel Tube Trellis hedule 5hesmari Wilharrr.; 5W20 1 9 "JLne Bug" Sherman 'J/dhams 5W2020 "Adirondack" Mutual Matenals "Bu-aundy Red" in split- face texture Mutual Matcnals "Mesa Tar" in split -face texture Mutual Matenals "Mesa Tar" in smooth - face texture Sherman ''Wdhams 5W2023 "Threshold Taupe" Sherman 1/dhams 5W2024 "Gobi Beige" Sherman ' //ilhams 5W2022 "Cry Cock" Clear anodized storefront with clear insulated glass 5hr-rman ''WlIllarns 5W2022 "Cry Cock" Sherman Williams 5W2940 "Brid9epert" Nu -ray Metal Products. Inc. "Cark Brorze Sherman WJhams 5W2802 "Rookwood Red" (see lighting future schedule) Colo- as selected in light beige range Sherman t /ilhams 5W2020 "Ad ronclak" COPING TO MATCH BLDG. 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