Loading...
HomeMy WebLinkAboutSEPA E03-022 - TUKWILA SCHOOL DISTRICT - ADMINISTRATION BUILDING7 TUKWILA SCHOOLS ADMIN OFFICE 4640 S 144 ST • City of Tukwila Steven M. Mullet, Mayor Department of Community Development Steve Lancaster, Director NOTICE OF DECISION October 9, 2003 To: Craig McClelland, Applicant State Department of Ecology, SEPA Division King County Assessor (for changes to land use or value) PROJECT: Administration office building for Tukwila School District FILE NUMBERS: E03 -022 ASSOCIATED FILES: CONDITIONAL USE PERMIT L03 -051 APPLICANT: Craig McClelland REQUEST: To construct a 7,700- sq. ft. school administration building. LOCATION: 4640 South 144th Street, Tukwila. This notice is to confirm the decision reached by Tukwila's SEPA Official to issue a Determination of Non - significance (DNS) for the above project based on the environmental checklist and the underlying permit application. Project materials including the application, any staff reports, and other studies related to the permits are available for inspection at: Tukwila Department of Community Development 6300 Southcenter Blvd., Suite 100 Tukwila, WA 98188 Monday through Friday 8:30 a.m. - 5:00 p.m. The project planner is Minnie Dhaliwal, who may be contacted at (206) 431 -3670 for further information. The decision is appealable to the Superior Court pursuant to the Judicial Review of Land Use Decisions, Revised Code of Washington (RCW 36.70C). Last saved 10/08/03 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206 - 431 -3670 • Fax: 206 - 431 -3665 • City of Tukwila • Steven M. Mullet, Mayor Department of Community Development Steve Lancaster, Director FINAL STAFF EVALUATION FOR ENVIRONMENTAL CHECKLIST File No: E03 -022 I. SUMMARY OF PROPOSED ACTION The current proposal is to construct a 7,700 -sq. ft. school administration building. II. GENERAL INFORMATION Project Name: Administration office for Tukwila Schools Applicant: Craig McClelland for Tukwila School District Location: 4640 South 144th Street Zoning: LDR Comprehensive Plan Designation: LDR III. REVIEW PROCESS The proposed action is subject to State Environmental Policy Act (SEPA) review as the project does not meet the exemptions listed under WAC 197 -11 -800 IV. BACKGROUND/PROPOSAL The current proposal is to construct a new 7,700 -sq. ft. building to be used for administration offices for Tukwila Schools. The existing building on the subject site has been demolished. The new building is proposed on the same site. No additional parking areas are proposed and the new building and the existing middle school will share the common 111 on -site parking spaces. A SEPA determination of non - significance (DNS) for the demolition work was issued on August 21, 2003. 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206 - 431 -3670 • Fax: 206 - 431 -3665 V. REVIEW OF THE ENVIRONMENTAL CHECKLIST The following lists the elements contained within the Environmental Checklist submitted for the proposed project. The numbers in the staff evaluation correspond to the numbers in the Environmental Checklist. If staff concurs with the applicant's response, this is so stated. If the response to a particular item in the checklist is found to be inadequate or clarification is needed, there is additional staff comment and evaluation. A. BACKGROUND: 1 -5 — Concur with checklist. 6- The construction will follow issuance of SEPA determination and after obtaining all required permits from the City of Tukwila or other agencies. 7 -10 Concur with checklist. 11 -The existing building has been demolished. The current application is for construction of the new building and other site improvements. 12 -13 — Concur with checklist. B. ENVIRONMENTAL ELEMENTS: 1. Earth: a -h -- Concur with checklist. 2. Air: a -c— Concur with checklist. 3. Water: a(1)- a(6)L— Concur with checklist. b(1) and (2) -- Concur with checklist. c (1) —The project shall meet all King County Surface Water Design Manual drainage requirements. All impacts associated to drainage will be mitigated as part of the construction permit. c (2) — Best Management Practices must be followed to ensure that no construction debris enters the storm drainage system. All impacts related to construction debris will be mitigated as part of the construction permit. d -- Concur with checklist. 4. Plants: a -d -- Concur with checklist. • • 5. Animals: a -d— Concur with checklist. 6. Energy and Natural Resources: a -c -- Concur with checklist. 7. Environmental Health: a – Concur with checklist. a(1)- a(2) -- Concur with checklist. b (1) -- Concur with checklist. . b(2) -b (3) –The project must meet City of Tukwila noise ordinance requirements. Compliance with applicable local, state and federal noise regulations will mitigate any potential adverse noise impacts, associated with the project. 8. Land and Shoreline Use: a -e-- Concur with checklist. f —The Comprehensive designation of the subject property is Low Density Residential. g- 1— Concur with checklist 9. Housing: a -c -- Concur with checklist. 10. Aesthetics: a-c--Concur with checklist. 11. Light and Glare: a -d -- Concur with checklist. 12. Recreation: a -c – Concur with checklist. 13. Historic and Cultural Preservation: a -c -- Concur with checklist. 14. Transportation: a- g— Concur with checklist. 15. Public Services: a -b -- Concur with checklist. 16. Utilities: a -b -- Concur with checklist. VI. 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 "Final Staff Evaluation for Application No. E03- 022 ", and is supported by plans, policies, and regulations formally adopted by city of Tukwila for the exercise of substantive authority under SEPA to approve, condition, or deny proposed actions. Prepared by: Minnie Dhaliwal, Senior Planner Date: October 8, 2003 • • City of Tukwila Department of Community Development / 6300 Southcenter BL, Suite 100 / Tukwila, WA 98188 / (206) 431 -3670 DETERMINATION OF NON - SIGNIFICANCE (DNS) File Number: E03 -022 Applied: 08/21/2003 Issue Date: 10/09/2003 Status: ISSUED Proponent: CRAIG MCCLELAND FOR TUKWILA SCHOOL DISTRICT Lead Agency: City of Tukwila Description of Proposal: SEPA FOR CONSTRUCTION OF 7,700 SQ. FT. ADMINISTRATION BUILDING FOR TUKWILA SCHOOL DISTRICT. Location of Proposal: Address: 4640 S 144 ST TUKW Parcel Number: 1523049106 Section/Township /Range: S1/2 OF SW1 /4 15 -23 -04 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 43.21 c.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). Steve Lancaster, Responsible Official City of Tukwila 6300 Southcenter Blvd Tukwila, WA 98188 (206)431 -3670 O c'hokrtr 24)33 Date 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: Miscperm E03 -022 Printed: 10 -08 -2003 • Dept. Of Community Development City of Tukwila AFFIDAVIT OF DISTRIBUTION I, HEREBY DECLARE THAT: Notice of Public Hearing y Determination of Non - Significance Person requesting mailing: Notice of Public Meeting Mitigated Determination of. Non - Significance Board of Adjustment Agenda Pkt Determination of Significance & Scoping 'Notice Board of Appeals Agenda Pkt Notice of Action Planning Commission Agenda Pkt Official Notice Short Subdivision Agenda Notice of Application Shoreline Mgmt Permit Notice of Application for Shoreline Mgmt Permit __ __ FAX To Seattle Times Classifieds Mail: Gail Muller Classifieds PO Box 70 - Seattle WA 98111 Other Was mailed to each of the addresses listed on this day of the year 20 P:GINAWYNETTA/FORMS /AFFIDAVIT -MAIL 08/29/003:31 PM \ 1�Project Name: �y�- 6i z-� �� ���cr�- -( Project Number: eU� --66-1;1"---- 1� Mailer's Signature: A.,,----___...e , Person requesting mailing: P:GINAWYNETTA/FORMS /AFFIDAVIT -MAIL 08/29/003:31 PM CHECKLIST: ENVIRONMENTAL REVIEW /SHORELINE PER 1 I MAILINGS 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 () OFFICE OF ARCHAEOLOGY ( ) TRANSPORTATION DEPARTMENT ( ) DEPT NATURAL RESOURCES ( ) OFFICE OF THE GOVERNOR () DEPT OF COMM. TRADE & ECONOMIC DEV. () DEPT OF FISHERIES & WILDLIFE () DEPT OF SOCIAL & HEALTH SERV. ( ) DEPT OF ECOLOGY, SHORELAND DIV M DEPT OF ECOLOGY, SEPA DIVISION* ( ) OFFICE OF ATTORNEY GENERAL * SEND CHKLIST W/ DETERMINATIONS SEND SITE MAPS WITH DECISION KING COUNTY AGENCIES () BOUNDARY REVIEW BOARD ( ) FIRE DISTRICT #11 ( ) FIRE DISTRICT #2 () K.C. WASTEWATER TREATMENT DIVISION ()K.C. DEPT OF PARKS & REC K.C. ASSESSORS OFFICE ( ) TUKWILA SCHOOL DISTRICT ( ) TUKWILA LIBRARY ( ) RENTON LIBRARY ( ) KENT LIBRARY ( ) CITY OF SEATTLE LIBRARY ( ) QWEST ( ) SEATTLE CITY LIGHT () PUGET SOUND ENERGY () HIGHLINE WATER DISTRICT ( ) SEATTLE WATER DEPARTMENT ( ) AT &T CABLE SERVICES () KENT PLANNING DEPT ( ) TUKWILA CITY DEPARTMENTS: ( ) PUBLIC WORKS ( ) POLICE () PLANNING ( ) PARKS & REC. ( ) CITY CLERK ( ) FIRE ( ) FINANCE () BUILDING ()MAYOR SCHOOLS /LIBRARIES UTILITIES " CITY AGENCIES ( ) HEALTH DEPT ( ) PORT OF SEATTLE ( ) K.C. DEV & ENVIR SERVICES -SEPA INFO CNTR ,('K.C. TRANSIT DIVISION - SEPA OFFICIAL ( ) K.C. LAND & WATER RESOURCES () FOSTER LIBRARY ( ) K C PUBLIC LIBRARY ()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 SEWERNVATER 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 ALL SEATTLE RELATED PLNG PROJ. OTHER LOCAL AGENCIES ( ) PUGET SOUND REGIONAL COUNCIL ( ) SW K C CHAMBER OF COMMERCE ( ) MUCKLESHOOT INDIAN TRIBE ( ) CULTURAL RESOURCES PROGRAM () FISHERIES PROGRAM ( ) WILDLIFE PROGRAM MEDIA ( ) SEATTLE TIMES () SOUTH COUNTY JOURNAL P: \ADMINISTRATIVE \FORMS \CHKLIST.DOC ( ) DUWAMISH INDIAN TRIBE ( ) P.S. AIR POLLUTION CLEAN AGENCY ( ) SOUND TRANSIT ( ) DUWAMISH RIVER CLEAN -UP COALITION *SEND NOTICE OF ALL APPLICATIONS ON DUWAMISH RIVER ( ) HIGHLINE TIMES ( ) CI.TUKWILA.WA.US.WWW • • 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 Attorney 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: Permit Data Sheet Shoreline Substantial Development Permit (3 -part from Sierra) Findings (staff report or memo) Shoreline 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) Findings (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:\ ADMINISTRATIVE \FORMS \CHKLIST.DOC Prepared for: Tukwila School District 4640 S. 144th Street Tukwila, Washington 98168 Prepared by: Frank D. Reinart, E.I.T. Staff Geotechnical Engineer James M. Schmidt, P.E. Manager, Geotechnical Engineer Cciat KLEINFELDER RECEIVED !AUG 21 2003 COMMUNITY DEVELOPMENT Geotechnical Report Proposed Administration Building Tukwila School District Tukwila, Washington Kleinfelder Job Number: 25000 Kleinfelder, Inc. 2405 - 140th Avenue NE Suite A101 Bellevue, WA 98005 Phone: (425) 562 -4200 Fax: (425) 562 -4201 January 29, 2003 Copyright 2003 Kleinfelder, Inc. All Rights Reserved This document was prepared for use only by the client, only for the purposes stated, and within a reasonable time from issuance. Non- commercial, educational and scientific use of this report by regulatory agencies is regarded as a "fair use" and not a violation of copyright. Regulatory agencies may make additional copies of this document for internal use. Copies may also be made available to the public as required by law. The reprint must acknowledge the copyright and indicate that permission to reprint has been received. I FIRES 8/31/03 I KLEINFELDER TABLE OF CONTENTS 1.0 INTRODUCTION 1 1.1 GENERAL 1 1.2 PROJECT DESCRIPTION 1 1.3 PURPOSE AND SCOPE OF SERVICES 1 2.0 SITE CONDITIONS 2 2.1 SURFACE 2 2.2 SUBSURFACE 2 2.3 GROUNDWATER 3 3.0 DISCUSSION AND CONCLUSIONS 3 3.1 GENERAL 3 3.2 DEMOLITION 4 3.3 EARTHWORK 4 3.4 FOUNDATIONS 4 3.5 SLAB -ON -GRADE FLOORS 5 3.6 SITE DRAINAGE 5 4.0 GEOTECHNICAL DESIGN RECOMMENDATIONS 6 4.1 GENERAL 6 4.2 SITE PREPARATION AND EARTHWORK 6 4.2.1 Demolition 6 4.2.2 Clearing and Stripping 6 4.2.3 Excavation 6 4.2.4 Slopes 7 4.3 Slope Protection 8 4.4 SEISMIC DESIGN CRITERIA 8 4.5 SPREAD FOOTING FOUNDATIONS 8 4.6 FLOORS 10 4.7 DRAINAGE 10 4.7.1 Short Term 10 4.7.2 Permanent 10 5.0 GEOTECHNICAL CONSTRUCTION RECOMMENDATIONS 11 5.1 GENERAL 11 5.1.1 Description 11 5.1.2 Standard Specifications 11 5.1.3 Reference Standards 11 5.1.4 Geotechnical Engineer 12 5.1.5 Geotechnical Report 12 5.1.6 Construction Site Safety 12 25000/SEA3R016.doc Page i of ii Copyright 2003 Kleinfelder, Inc. I9 KLEINFELDER 5.2 EARTHWORK 12 5.2.1 Materials 12 5.2.2 Terms 13 5.2.3 Quality Control 13 5.2.4 Seepage Control 14 5.2.5 Clearing and Stripping 14 5.2.6 General Excavation 14 5.2.7 Structural Excavation 15 5.2.8 Structural Fill Construction 16 5.3 DRAINAGE 16 5.3.1 General 16 5.3.2 Concrete Slab -on -Grade Drainage 16 6.0 ADDITIONAL SERVICES 17 7.0 LIMITATIONS 17 FIGURES Figure 1: Figure 2: APPENDICES Vicinity Map Site Plan Appendix A: Field Exploration Appendix B: Application For Authorization to Use • 25000/SEA3R016.doc Page ii of ii Copyright 2003 Kleinfelder, Inc. k9 KLEINFELDER 1.0 INTRODUCTION 1.1 GENERAL This report presents the results of Kleinfelder, Inc.'s (Kleinfelder's) geotechnical engineering study for the design and construction of the proposed administration building, to be located at 4640 South 144th Street, in Tukwila, Washington. The location of the project site can be found in Figure 1 — Vicinity Map. Our services for this study were performed in accordance with our November 25, 2002 proposal. 1.2 PROJECT DESCRIPTION The proposed building site is located at the site of the existing Tukwila School District administration building. The proposed building will consist of a new single -story, 7,500- to 7,600 - square -foot structure. The building will be wood - framed, with board & batton siding and a concrete masonry veneer that may extend up to 7 feet in height. Roofing may be either metal or composite. 1.3 PURPOSE AND SCOPE OF SERVICES The purpose of our study was to explore subsurface conditions at the site as a basis for providing recommendations for site preparation, design, and construction of the proposed administration building. Specifically, our scope of services included: • Utility Clearance: We located existing utilities at the site prior to drilling activities through a combination of the Underground Service Alert and our own field observations. • Field Exploration: We explored the soil and groundwater conditions beneath the proposed developments with a series of three (3) exploratory borings, drilled with a track- mounted, limited access drill rig employing continuous -flight hollow -stem augers. Borings were advanced in accessible areas surrounding the existing administration building. The approximate locations of the borings are shown in Figure 2. A more detailed description of the field exploration procedures is provided in Appendix A. • Geotechnical Analysis: Engineering analyses were performed as a basis for recommendations regarding support of the proposed developments. Our design recommendations, presented in this geotechnical report, included the following: • Site preparation and grading, including evaluations of the suitability of on -site soils for use as fill, gradation criteria for imported fill soils, and placement and compaction criteria of on -site and imported soils. • Allowable soil bearing pressures, minimum width and depth requirements, coefficient of friction and passive pressure to resist sliding, and estimates of total and differential foundation settlement for shallow foundations. 25000/SEA3R0I6.doc Page 1 of 18 Copyright 2003 Kleinfelder, Inc. II KLEINFELDER • At rest, passive, and active lateral earth pressures for native materials (including an estimate of coefficient of friction for the native soil). • Support of floor slabs (effective modulus of subgrade reaction), including subgrade preparation, underslab drainage, and moisture protection. • Temporary and permanent site drainage and erosion control measures. • Temporary and permanent slope inclinations and heights. • Seismic coefficients for the site. • Geotechnical Report: We prepared this report, presenting our findings, conclusions and recommendations. Section 2.0 describes site surface and subsurface conditions; Section 3.0 presents a geotechnical discussion and our conclusions regarding the project; and Sections 4.0 and 5.0 present our geotechnical recommendations for design and construction, respectively. 2.0 SITE CONDITIONS 2.1 SURFACE The site is presently developed with a single -story CMU administrative building and a single - story portable building. A driveway, located west of the buildings provides access to the site. Parking for the existing facilities is located north of the buildings. The driveway and parking area are paved with asphaltic concrete pavement, and the buildings are surrounded with grass and landscaping. 2.2 SUBSURFACE Kleinfelder explored subsurface conditions at the site using three (3) exploratory borings (designated. B -1 through B -3). The borings were drilled with a track- mounted, limited- access drill rig equipped with continuous -flight hollow -stem augers. Borings were located in accessible areas surrounding the existing administration building. Based on the conditions encountered, we characterized the soils and developed the general stratigraphic profile described below. Topsoil: Topsoil is encountered at the ground surface in all of the borings. This layer was 3 to 12 inches thick, and consisted of brown organic silt with roots and other organics. • Fill: Fill is encountered beneath the topsoil in all of the borings. This layer consists of light brown, soft to medium stiff silt or light brown, loose silty sand with gravel. • Glacial Till: Glacial Till is encountered directly beneath either the topsoil (B -3), or the fill (B -1 and B -2). The glacial till was encountered to the maximum depth explored in each boring. The upper 10 to 11 feet of glacial till is more weathered, and consists of yellow - brown to gray- brown, medium dense to dense silty sand with varying amounts of gravel. 25000 /SEA3R016.doc Page 2 of 18 Copyright 2003 Kleinfelder, Inc. I9 KLEINFELDER Below 10 to 11 feet below ground surface (bgs), the layer consists of light gray- brown, very dense silty sand with gravel. More detailed descriptions of subsurface conditions encountered at individual exploration locations are presented on the exploratory boring logs, included in Appendix A, Field Exploration. This Appendix section also includes a description of exploration and sampling procedures. 2.3 GROUNDWATER Groundwater was not encountered in the borings to the maximum depth explored during drilling. The water table at this site will fluctuate seasonally, being highest during the wetter winter months and lower during the dry summer months. It should be noted that Kleinfelder did not install groundwater monitoring piezometers, nor did we perform a hydrogeologic evaluation at this site. Therefore, we do not know at what depth the high water level will be at this site. 3.0 DISCUSSION AND CONCLUSIONS 3.1 GENERAL Based on the results of our exploration and analysis, we present the following general conclusions: • The proposed building can be founded on shallow conventional spread footings that are founded on firm and unyielding native glacial till or imported structural fill founded directly on a fine and unyielding native subgrade. It should be noted that the on -site and native soil contains a considerable amount of silt, which is considered moisture sensitive. As such, the subgrade will degrade following rain or snow events. The contractor should take appropriate measures to protect the exposed subgrade prior to constructing the footings. • Excavations of the on -site topsoil, fill, and glacial till can be performed with conventional earthwork equipment. • The on -site fill is generally above the optimum moisture content, at least at the time of our geotechnical field exploration. It will be very difficult to dry out excavated soil that is above the optimum moisture content prior to placement as structural fill. • On -site fill and native glacial till are suitable for use as fill material, provided deleterious materials encountered can be screened out. Since these materials are moisture sensitive, they will be difficult to place and compact during rain events. • Slab -on -grade floors can be founded on either firm and unyielding on -site fill, firm and unyielding native glacial till, or structural fill that is founded directly on a firm and unyielding native subgrade. As with the footing subgrade, the contractor should take appropriate measures to protect the exposed subgrade prior to constructing the slab -on -grade floor. 25000 /SEA3R016.doc Page 3 of 18 Copyright 2003 Kleinfelder, Inc. m KLEINFELDER The remainder of this section discusses the above, as well as other, aspects of the project. Design and construction recommendations are presented in Sections 4.0 and 5.0, respectively. 3.2 DEMOLITION Demolition at the site will include removal of the existing buildings, paved parking and drive areas, and other developments and debris found in the footprint of the proposed administration building. The demolition debris should be removed from the site, and properly disposed of. 3.3 EARTHWORK Earthwork will include topsoil stripping and site grading required to meet the design plans. Debris or boulders greater than 1 foot in dimension discovered beneath the proposed structures should be removed, and replaced with structural fill as appropriate. Following site excavation, the exposed subgrade should be proofrolled with a loaded dump truck or front -end loader, and/or hand- probed to identify soft areas that require over excavation. Detailed grading plans and planned finished floor elevations were not available to us at the time of this report. Based on observations of the existing site topography, cuts and fills of up to 1 to 3 feet may be required, but final cut and fill information will depend on the site grading plans developed for the site. Topsoil is not suitable for use as structural fill. The onsite fill and native glacial till are suitable for use as a structural fill, and may be used for general backfilling, grading, or landscaping purposes. It should be noted that these materials contain a considerable amount of silt, which is considered moisture sensitive. As such, the onsite soil will be difficult to place and compact when too wet (such as during, or immediately following, rain or snow events). The on -site fill is generally above the optimum moisture content, at least at the time of our geotechnical field exploration. It will be very difficult to dry out excavated soil that is above the optimum moisture content prior to placement as structural fill. Alternatively, an imported select fill material that meets the requirements described in Section 5.2 can be used as a structural fill. 3.4 FOUNDATIONS We judge a conventional shallow foundation system, such as conventional spread footings, will provide satisfactory support for the proposed building. Foundations should bear on firm and unyielding native glacial till, or structural fill founded directly on a firm and unyielding native subgrade. Deleterious materials should be removed from the base of footing excavations, and replaced with structural fill. Since the on -site material is moisture sensitive, the contractor 25000/SEA3R016.doc Page 4 of 18 Copyright 2003 Kleinfelder, Inc. KLEINFELDER should take appropriate measures to protect the exposed subgrade prior to constructing the footings. Provided fills are placed and compacted as described herein and foundations are constructed as described herein, we estimate total settlement will be less than 1 inch. Differential settlement should be less than %2 of an inch over 50 feet. Specific design and construction recommendations are presented in Sections 4.0 and 5.0, respectively. 3.5 SLAB -ON -GRADE FLOORS A concrete slab -on -grade floor system is appropriate provided the floors are underlain by at least 4 inches of capillary break material that is, in turn, founded on either a firm and unyielding native subgrade or structural fill placed on a firm and unyielding native subgrade. Before placing structural fill, the subgrade should be proofrolled or hand probed to identify soft areas. As with the footing subgrade, the contractor should take appropriate measures to protect the exposed subgrade prior to constructing the slab -on -grade floor. 3.6 SITE DRAINAGE Both short- and long -term drainage control measures should be included in project design and construction. Stormwater from the site should be directed, under control, to a positive and permanent discharge system, such as a storm sewer. If an infiltration method of stormwater discharge is designed for the site, an infiltration test should be performed in the area (and at the bottom depth) of the proposed infiltration system. Over the short term, we believe site and construction drainage can be reasonably well controlled by careful excavation practices. Typically, these include, but are not limited to, shallow upgrade perimeter ditches or low earthen berms, and temporary sumps in excavations to collect seepage and prevent water from damaging exposed subgrades. Drains should be included at the bottom of all temporary slopes to collect surface water flow from the slope and prevent it from flowing onto exposed subgrades. All collected water should be directed under control to a positive and permanent discharge system. Over the long term, more permanent measures such as installation of footing and wall drains should be included. All permanent drains should be directed to a positive and permanent discharge point well away from the structure. Roof downspouts should not be connected to footing drains, but should be tightlined separately to discharge. This will avoid the potential for 25000/SEA3R016.doc Page 5 of 18 Copyright 2003 Kleinfelder, Inc. I9 KLEINFELDER roof debris to be washed into footing drains and possibly blocking them. This will also avoid overtaxing the footing drainage system. Cleanouts should be provided for footing drains and the downspout tightlines. Specific site drainage details are provided in Sections 4.0 and 5.0 of this report. 4.0 GEOTECHNICAL DESIGN RECOMMENDATIONS 4.1 GENERAL The following paragraphs present our geotechnical design recommendations for use by your consultants on this project. For satisfactory and successful construction of this project, these recommendations must be applied in their entirety and in conjunction with the construction recommendations provided in Section 5.0. 4.2 SITE PREPARATION AND EARTHWORK 4.2.1 Demolition Demolition at the site will include removal of the existing buildings, paved parking and drive areas, and other developments and debris found in the footprint of the proposed administration building. The demolition debris should be removed from the site, and properly disposed of. 4.2.2 Clearing and Stripping Topsoil should be cleared or stripped from areas beneath footings and slabs, and disposed of off site or used in landscaped areas. We estimate the depth of topsoil stripping will be between 3 and 12 inches, as encountered in our borings. 4.2.3 Excavation Footing Excavation: Footing excavations should be performed to firm and unyielding native glacial till. Upon reaching that target depth, or before placement of structural fill to establish foundation grade, the exposed soil should be proofrolled or hand - probed to identify soft or unstable areas. If soft areas are encountered at planned grade, they should be over excavated to a firm and unyielding subgrade. Excavations below the footing subgrade should extend beyond the footing a distance equal to the depth of the excavation below planned footing subgrade elevation. Slab -on -Grade Excavation: After the general building pad excavation has been completed to the planned slab subgrades, the subgrade beneath the slab -on -grade should be either proofrolled or 25000 /SEA3R016.doc Page 6 of 18 Copyright 2003 Kleinfelder, Inc_ KLEINFELDER hand probed to identify soft or unstable areas. Soft soils encountered during proofrolling or hand probing should be overexcavated to a firm and unyielding subgrade. Structural Fill: Soil used to establish grade beneath structural elements, such as spread footings, floor slabs and pavement sections, should consist of on -site fill, native glacial till, or imported select fill as defined in Section 5.0. This structural fill should be compacted to the following minimum relative compaction based on the material's maximum dry density, as determined by the ASTM D1557 test method: Foundations and Floor Slabs: Pavement Structural Section: Pavement Structural Section: 95 Percent; 95 Percent (upper 2 feet); 90 Percent (below 2 feet). As previously stated, the onsite soil may be difficult to place and compact when the moisture content of the soils exceeds the optimum moisture content, particularly during the wet fall, winter, and spring months. The on -site fill is generally above the optimum moisture content, at least at the time of our geotechnical field exploration. It will be very difficult to dry out any excavated soil that is above the optimum moisture content prior to placement as structural fill. Fill Placement and Compaction: Upon completion of stripping, general excavating, proofrolling/hand probing, and overexcavating, structural fill should be placed as described in Section 5.0 to achieve design elevations. Topsoil is not suitable for use as structural fill. On -site fill and, native glacial till are suitable for use as structural fill material provided they can be properly moisture conditioned and compacted and that all deleterious material has been removed. The on -site soils will be very difficult to properly place and compact when the moisture content of the soils exceed the optimum moisture content, particularly during the fall, winter, and spring months. 4.2.4 Slopes Temporary Slopes (Maximum height of 10 feet) • Cut: • Compacted Structural Fill: Maximum 1:1 (horizontal:vertical) Maximum 1:1 Permanent Slopes (Maximum height of 10 feet) • Cut: Maximum 2:1 25000/SEA3R016.doc Page 7 of 18 Copyright 2003 Kleinfelder, Inc. • Compacted Structural Fill: Maximum 2:1 M KLEINFELDER 4.3 SLOPE PROTECTION Temporary slopes should be protected from the elements by covering with a protective membrane consisting of plastic sheeting or some other similar impermeable material. Sheeting sections should overlap by at least 12 inches and be tightly secured with sandbags, tires, staking, or other means to prevent wind from exposing the soils under the sheeting. Permanent slopes should be planted with a deep- rooted, rapid -growth vegetative cover as soon after completion of slope construction as possible. 4.4 SEISMIC DESIGN CRITERIA In accordance with Section 1636 of the 1997 Uniform Building Code, the following seismic design criteria should be used: Site Profile: Sd (stiff soil profile) Seismic Zone: 3; Z = 0.30 Seismic Source Type: A Seismic Coefficient, Ca: 0.36 Seismic Coefficient, C,,: 0.54 4.5 SPREAD FOOTING FOUNDATIONS We judge that a conventional shallow foundation system, such as spread footings, will provide satisfactory support for the proposed structure. The foundation should bear on firm and unyielding on -site fill, firm and yielding native glacial till, or on structural fill that is founded directly on a firm and unyielding native subgrade. Specific design recommendations are presented in the following section. Specific construction recommendations are presented in Section 5.0. • Foundation - Bearing Soil: Firm and unyielding native glacial till, and/or structural fill • Minimum Footing Depth of Embedment Perimeter and Isolated Footings: 18 inches below the lowest adjacent final exterior grade Interior Footings: 12 inches below top of floor slab 25000 /SEA3R016.doc Page 8 of 18 Copyright 2003 Kleinfelder, Inc. k9 KLEINFELDER • Minimum Footing Lateral Dimension Spread Footings: 18 inches Continuous Footings: 12 inches • Footing Excavation Protection If footing excavations are opened during the winter season or periods of wet weather, it will be helpful to protect the subgrade until footings are poured. Footing excavation protection could consist of, but not be limited to, a lean concrete mud mat, gravel layer, or tent. • Allowable Soil Bearing Pressure Foundations Bearing on native glacial till and structural fill: 3,000 psf Note: Allowable soil bearing pressures are for all dead and live loads and may be increased by one -third for temporary short-term wind and seismic loads. • Lateral Load Resistance Passive Resistance: Coefficient of Friction: 250 pounds per cubic foot (pcf) equivalent fluid weight (EFW) 0.4 times dead load Note: The passive resistance includes a safety factor of about 3 and is based on the assumption that all backfill around the foundation has been placed and compacted as recommended in Section 5.0. The upper foot of soil should be neglected in design computations unless protected by pavement or a slab -on- grade. The coefficient of friction includes a safety factor of 1.5. • Settlement Total Settlement: less than 1 inch Differential Settlement: less than 1/2 an inch over 50 feet Time Rate: approximately 90 percent during construction • Modulus of Subgrade Reaction K5: 250 kcf 25000/SEA3R016.doc Page 9 of 18 Copyright 2003 Kleinfelder, Inc. KLEINFELDER 4.6 FLOORS A concrete slab -on -grade floor system is appropriate provided the floors are underlain by firm and unyielding on -site fill, firm and unyielding native glacial till, or structural fill that is founded directly on a firm and unyielding native subgrade. The subgrade should be proofrolled or hand probed as described above prior to placing the capillary break or structural fill. We also recommend the following underslab drainage measures be included: • Subgrade: Firm and unyielding on -site fill, firm and unyielding native glacial till, or structural fill bearing directly on a firm and unyielding native subgrade. • Capillary Break Minimum of 4 inches of free - draining gravel containing less than 5 percent fines (silt and clay -sized particles) based on the fraction passing the 3/4 -inch mesh sieve. • Vapor Barrier: In areas where moisture would be detrimental to equipment, floor coverings or furnishings inside the building, a vapor barrier should be placed beneath the concrete floor slab. Reinforced plastic sheeting is satisfactory for this purpose. • Protection Measures: A layer of sand, approximately 2 inches thick, may be placed over the plastic sheeting to protect it from damage, to act as an aid in curing of the concrete slab, and also to help prevent cement paste from bleeding down into the underlying capillary break. Specific construction recommendations are presented in Section 5.0. 4.7 DRAINAGE - Both short- and long -term drainage control measures should be included in project design and construction. 4.7.1 Short Term Over the short term, we believe site and construction drainage can be reasonably well controlled by careful excavation practices. Typically, these include, but are not limited to, shallow upgrade perimeter ditches or low earthen berms, and temporary sumps in excavations to collect seepage and prevent water from damaging exposed subgrades. Drains should be included at the bottom of all temporary slopes to collect surface water flow from the slope and prevent it from flowing onto exposed building subgrades. All collected water should be conveyed under control to a positive and permanent discharge system, such as a storm sewer. 4.7.2 Permanent Permanent measures such as the installation of footing drains should be included. All permanent drains should be conveyed to a positive and permanent discharge point well away from the 25000/SEA3R016.doc Page 10 of 18 Copyright 2003 Kleinfelder, Inc. k9 KLEINFELDER structure. Roof downspouts should not be connected to footing drains, but should be tight lined separately to discharge. This will avoid the potential for roof debris to be washed into footing drains and possibly blocking them. This will also avoid overtaxing the footing drainage system. Clean-outs should be provided for footing drains and the downspout tight lines. Specific site drainage details are provided below. • Footing Excavation Drain: In event that groundwater seeps into footing excavations, it should be possible to remove it by gently sloping the base of excavation to one or more shallow sump pits and pumping the water from there to a positive, permanent discharge system. • Footing Drains: These drains should be installed after construction of the building footings and immediately before backfilling against building stem walls. • Surface Runoff Interceptor ditches or trenches or low earthen berms should be installed along the upgrade perimeters of the site to prevent surface water runoff from precipitation or other sources from flowing over the face of excavated slopes or onto graded areas. We recommend that a surface interceptor ditch be placed every 25 feet (slope distance) on slopes exceeding 25 feet in height. • Downspout or Roof Drains: These should be installed once the building's roof is in place. They should discharge in tight line to a positive, permanent drain system. Under no circumstances connect these tight lines to the perimeter footing drains. 5.0 GEOTECHNICAL CONSTRUCTION RECOMMENDATIONS 5.1 GENERAL 5.1.1 Description This section presents our recommendations for the geotechnical aspects of construction. Specifically, we cover earthwork and drainage. Our design criteria are based on these construction recommendations; therefore, these recommendations should be incorporated into the project specifications in their entirety. 5.1.2 Standard Specifications Where possible, we refer to the 2002 Edition of the State of Washington Standard Specifications for Road, Bridge, and Municipal Construction. 5.1.3 Reference Standards Reference Standards are referred to by agency or association initials and are from the latest editions of the following : ASTM - American Society for Testing and Materials: Annual Book of ASTM Standards 25000/SEA3R016.doc Page 11 of 18 Copyright 2003 Kleinfelder, Inc. 111 KLEINFELDER 5.1.4 Geotechnical Engineer We recommend you retain Kleinfelder as the geotechnical engineer during construction to observe and test the geotechnical aspects of the contractor's work. This will allow us to compare the actual conditions encountered with those expected by this investigation and to modify our recommendations, if necessary. We will be present at the site on a full -time basis to check that the contractor's work conforms to the geotechnical aspects of the plans and specifications. Our daily field reports and final report form an important record of construction. Observation and testing by the geotechnical engineer, however, should not in any way release the contractor from the responsibility of performing the work in such a manner as to provide a satisfactory job that meets the requirements of the project plans and specifications, or from meeting contractual obligations to the owner. 5.1.5 Geotechnical Report This report has been prepared for design purposes for the Tukwila School District and its design consultants for this project only. The entire report should be provided to contractors for their bidding or estimating, but not as a warranty of the subsurface conditions. We cannot be responsible for the interpretation by others of the information contained in this report. 5.1.6 Construction Site Safety Our scope of services did not include construction safety practices and this report is not intended to direct construction means, methods, techniques, sequences, or procedures, except as specifically described, and then only for consideration in design, not for construction guidance. The contractor should be made responsible for construction site safety and compliance with local, state, and federal requirements. 5.2 EARTHWORK Earthwork consists of clearing and stripping, excavating, placing and compacting fill, structural excavating and backfilling, and all subsidiary work necessary to complete the grading of the developed area to conform to the lines, grades, and slopes shown on the plans. 5.2.1 Materials Topsoil is not suitable for use as structural fill. On -site fill and native glacial till obtained at the project site during excavation (following demolition and topsoil stripping activities) are suitable for use as a structural fill beneath either footings or the slabs -on -grade floor, provided all debris and organics have been removed. These materials can also be used for general backfill and landscaping purposes. It should be noted that the on -site silty soils are moisture sensitive and will be very difficult to use as structural fill when the soils' moisture content exceeds the 25000/SEA3R016.doc Page 12 of 18 Copyright 2003 Kleinfelder, Inc. k9 KLEINFELDER optimum moisture content for that soil; such as during, and immediately following, rain or snow events. The on -site fill is generally above the optimum moisture content, at least at the time of our geotechnical field exploration. It will be very difficult to dry out any excavated soil that is above the optimum moisture content prior to placement as structural fill. Imported select fill material should consist of clean, free - draining sand and gravel containing less than 5 percent fines (silt - and clay -sized particles), based on the fraction passing the 3/4 -inch sieve. The contractor should submit samples of each of the required earthwork materials to the geotechnical engineer for evaluation and approval prior to use. The samples should be submitted at least 4 days prior to their use and sufficiently in advance of the work to allow the contractor to identify alternative sources if the material proves unsatisfactory. 5.2.2 Terms Terms used in this section are defined as follows : Percent Compaction is the required in -place dry density of the material, expressed as a percentage of the maximum dry density of the same material as determined in the laboratory by ASTM Standard D1557 (Modified Proctor). Optimum Moisture Content is the moisture content (percent by dry weight) corresponding to the maximum dry density of the same material as determined by ASTM Standard D1557. Moisture - Sensitive Soil is on -site soil containing more than 5 percent fines (silt- or clay -sized particles) based on the fraction passing the 3/4 -inch sieve. Structural Fill is fill material placed and compacted in areas that underlie structures or pavements. It should be compacted to the Percent Compaction specified in Section 4.2. 5.2.3 Quality Control The contractor should be made responsible for quality control of the earthwork. As the geotechnical engineer provided by the owner, we will observe and test the contractor's work for conformance with the geotechnical aspects of the plans and specifications. The contractor should be required to provide us with every reasonable facility for checking the workmanship for conformance. We will prepare a daily record of our observations and tests, which will be made available to the contractor and to the owner. You may wish to consider making the contractor responsible for retesting work if it fails to meet the requirements of the plans and specifications, and for the associated costs of such retesting. 25000 /SEA3R016.doc Page 13 of 18 Copyright 2003 Kleinfelder, Inc. KLEINFELDER The contractor should submit samples of each of the required earthwork materials to the geotechnical engineer for evaluation and approval prior to use. The samples should be submitted at least 4 days prior to their use and sufficiently in advance of the work to allow the contractor to identify alternative sources if the material proves unsatisfactory. 5.2.4 Seepage Control Runoff or groundwater seepage that would interfere with the contractor's work should be controlled during construction. Control may consist of temporary drainage ditches or subsurface drains. Installation of such measures should be the contractor's responsibility. 5.2.5 Clearing and Stripping The building area of the site should initially be cleared of all debris from the demolition and/or removal of the existing buildings, paved parking and drive areas, and other site developments and debris encountered on -site. These materials should not be reused; they should be removed from the site and disposed of properly. Additionally, topsoil must also be stripped from the areas of the new foundations and slab. 5.2.6 General Excavation General excavation consists of removing soil to sufficient depth to achieve design grades. The contractor should be responsible for excavating and disposing of or reusing excavated material. Detailed grading plans and planned finished floor elevations were not available to us at the time of this report. However, based on observations of the existing site topography, cuts and fills of 1 to 3 feet may be required, depending on the site grading plans. In general, the on -site soils can be excavated using standard earthmoving equipment. If earthwork operations are performed during periods of wet weather, the on -site native soils will deteriorate in the excavation process. Foundation bearing may also become disturbed, requiring repair. After design grade is reached, exposed soils should be proofrolled and/or hand probed to identify soft or unstable areas requiring additional excavation and replacement with structural fill. Proofrolling should be accomplished with a heavy, rubber -tired vehicle such as a loaded dump truck or a steel drum vibratory roller. Hand probing should be performed by our field engineering technician with a 1/2- inch - diameter steel bar. These procedures help delineate soft or weak soils. Soft soils encountered during proofrolling and hand probing should be overexcavated and replaced with structural fill. All final surfaces exposed by the complete excavation should be finished true to line and grade and present a smooth, firm surface. 25000 /SEA3R016.doc Page 14 of 18 Copyright 2003 Kleinfelder, Inc. m K1 EINFELDER After a rainfall, construction equipment travel on the exposed site subgrade should be minimized until the soils have been allowed to dry sufficiently. Otherwise, traffic activity on the wetted subgrade will degrade the exposed materials and result in additional excavation of the disturbed materials. 5.2.7 Structural Excavation The work addressed in this section covers excavation and backfill for structural elements such as the proposed foundations. Excavation for footings should be performed after site preparation is completed and the necessary structural fill has been satisfactorily compacted in accordance with the specifications. Excavation of footings should be made so as to avoid disturbing or loosening adjacent soils. Footing excavations should extend into foundation- bearing material to the depth shown on the plans. Excavations should be kept free of water at all times and all loose material should be removed from excavations prior to placement of formwork, reinforcing steel, concrete, or backfill. The contractor should inform the geotechnical engineer after the footing excavations have been completed and before placement of reinforcing steel, formwork, or concrete. We will then observe foundation excavations and provide written confirmation that the footings bear on the expected foundation- bearing material. During wet weather, in areas where the exposed subgrade consists of moisture - sensitive soils (soils containing more than 5 percent fines based on the fraction passing the 3/4 -inch sieve), the contractor should take measures to protect foundation excavations once the geotechnical engineer has approved them. These measures could include, but are not limited to, placing a layer of pea gravel, crushed rock, or lean concrete on the exposed subgrade, or covering the exposed subgrade with a plastic tent. If additional overexcavation is required because the subgrade was not protected, the cost of such additional work should be borne by the contractor. During dry weather, the contractor should take measures to protect the foundation excavations' exposed subgrade soils from drying out. These measures may include watering the subgrade as necessary. If the subgrade soils dry out and become loose, they should be moisture conditioned and recompacted to the percent compaction specified. After placing foundation concrete, backfilling with structural fill should be performed. 25000/SEA3R016.doc Page 15 of 18 Copyright 2003 Kleinfelder, Inc. k9 KLEINFELDER 5.2.8 Structural Fill Construction This section covers placement and compaction of earth materials to create structural fill. Soil used for structural fill should be moisture conditioned to within 3 percent of optimum moisture content, placed in level lifts not exceeding 8 inches in loose thickness, and compacted to the specified Percent Compaction (as defined in Section 5.2.2) to produce a firm and unyielding surface. If field density tests indicate the required Percent Compaction has not been obtained, or the surface is pumping and weaving under construction traffic, the fill material should be reconditioned as necessary and recompacted to the required Percent Compaction before placing any additional material. Fill slopes should be compacted by slope rolling and trimming, or should be overfilled and trimmed back to plan grade to expose a firm, smooth surface free of loose material. 53 DRAINAGE This section covers the placement of aggregate drainage materials and drain lines in the areas and to the lines and grades shown on the plans. 5.3.1 General The materials that we recommend be used for site drainage are as follows : • Capillary Break should consist of a minimum of 4 inches of free - draining gravel containing less than 5 percent fines (silt- and clay -size particles) based on the fraction passing the 3/4- inch sieve. • Free - draining Granular Material should consist of clean, free - draining gravel or crushed rock meeting the requirements of Section 9 -03.12 (2), "Gravel Backfill for Walls," in the Standard Specifications. • Drain Pipe should be a smooth- walled, rigid PVC or other rigid pipe conforming to the minimum sizes and dimensions shown on the plans. Corrugated plastic pipe should not be used because it has a tendency to crush and become blocked, and is often laid without a gradient. • Vapor Barrier should consist of an impermeable membrane of reinforced plastic or equivalent material. 5.3.2 Concrete Slab -on -Grade Drainage After structural backfill is satisfactorily compacted and subgrade preparation is completed, the capillary break should be placed in a manner to prevent segregation and should be compacted with appropriate vibratory equipment to provide a tight particle interlock. Any free water that has collected in the capillary break should be drained or removed by pumping before concrete is placed. 25000 /SEA3R016.doc Page 16 of 18 Copyright 2003 Kleinfelder, Inc. m KLEINFELDER The contractor should exercise care during installation of the vapor barrier to provide at least 12 inches of overlap between individual sheets. Care should also be exercised during construction to prevent puncturing or tearing the membrane. If such punctures or tears occur, the contractor should cover the affected area with an additional section of vapor barrier. 6.0 ADDITIONAL SERVICES The recommendations made in this report are based on the assumption that an adequate program of tests and observations will be made during construction to verify compliance with these recommendations. This tests and observations should include, but not necessarily be limited to, the following: • Observations and testing during site preparation, earthwork, and structural fill placement. • Observations of footing excavations. • Consultation as may be required during construction. We also recommend that project plans and specifications be reviewed by us to verify compatibility with our conclusions and recommendations. Information concerning the scope and cost for these services can be obtained from our office. 7.0 LIMITATIONS Recommendations contained in this report are based on the field explorations and our understanding of the proposed project. The investigation was performed using a mutually agreed upon scope of services. It is our opinion that this study was a cost - effective method to explore the subject site and evaluate the potential geotechnical concerns. The soils data used in the preparation of this report were obtained from borings completed for this study. It is possible that variations in soil and groundwater conditions exist between the points explored. The nature and extent of these variations may not be evident until construction occurs. If soil or groundwater conditions are encountered at this site which are different from those described in this report, our firm should be immediately notified so that we may make any necessary revisions to our recommendations. In addition, if the scope of the proposed project, locations of facilities, or design building loads change from the descriptions given in this report, our firm should be notified. 25000/SEA3R016.doc Page 17 of 18. Copyright 2003 Kleinfelder, Inc. KLEINFELDER The scope of our services 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 our report for consideration in design. This report has been prepared for use in evaluating the feasibility of development of the subject property by the Tukwila School District in accordance with the generally accepted standards of practice at the time the report was written. No warranty, express or implied, is made. This report may be used only by the Tukwila School District and its design consultants, and only for the purposes stated, within a reasonable time from its issuance. Land use, site conditions (both on- and off - site), or other factors including advances in man's understanding of applied science may change over time and could materially affect our findings. Therefore, this report should not be relied upon after 12 months from its issue. Kleinfelder should be notified if the project is delayed by more than 12 months from the date of this report so that a review of site conditions can be made, and recommendations revised if appropriate. It is the responsibility of the Tukwila School District to see that all parties to the project including the designer, contractor, subcontractors, etc., are made aware of this report in its entirety. The use of information contained in this report for bidding purposes should be done at the contractor's option and risk. Any party, other than the Tukwila School District, who wishes to use this report shall notify Kleinfelder of such intended use by executing the "Application for Authorization to Use" which is presented in Appendix B. Based on the intended use of the report, Kleinfelder may require that additional work be performed and that an updated report be issued. Non - compliance with any of these requirements by the Tukwila School District or anyone else will release Kleinfelder from all liability resulting from the use of this report by any unauthorized party. 25000 /SEA3R016.doc Page 18 of 18 Copyright 2003 Kleinfelder, Inc. Caoyavt O 1920.2001 tRmsoll Cap. gnat, Rs appfws.N ip b s. .d. ylpy/wwwnssostmsbmppoi t O Capys9lt IDOO by Gsagsyie Cb Tachnolosp Inc. N apt mama. 020)0 Newi sibn Tsaaaoyss. N VA asgwa. O Cap/iyt 2000 by Coaplagan NhonaloGrp Cb 9.e Sy1ms ltl. 0 m 02 0.4 0.6 MKLEINFELDER PROJECT # 25000 January 2003 Vicinity Map Propsed Administration Building Tukwila School District Tukwila, Washington FIGURE 1 r 261.0 nN191 FENCE 1.1• W. PREP UNE FENCE 1.2' W. LATE •P NW Cat WALL 0.6' W. PROP UNE 01ASS- •9IOWALTER MODE SCHOOL- CONCRETE 9GN WATER © —10' SLOPES EASEMENT REC.00 ¢MENT REC. NO. 31111334 7308030588 15 9DEWALK & UTa1TY •.4 EASEMENT REC. NO. 9205130554 -15 SEVER EASEMEN REC. NO. 5748009 o STGP i. ►! III ll -:'S •I■ s !wile! �AF�ON -CRAB "GRASS• ���I F¢a, LILTEN .. 00141(\ i` tea:' =s.IL y�����er• c1��LLLL�WEM� b'!_�= .dl���Ws'1Y •- GRASS -`'"� �, �;• -�,y < 11k. RIM=2 � 287.12 ancrcT.E1LiRa■mmoral - %1 fti _...9I (• a 55MH RIM -270.82 8.269.22 (ABAfO -N) 8- 269.12 (PLUG -SE) SW COR WALL 0.s' E. PROP INE END OF FENCE 0.3' E. PROP LINE ASPHALT 0.1' W. PROP UNE -N) ., try 4M1) MADDOX • NOTE: THIS EASEMENT IS APPARENTLY INTENDED TO COVER THE WATER VAULT TO THE EAST OF THIS LOCATIN. EASEMENT IS SHOT/14 PER OESERPTION. MAt9O%pm RIM=282.09 IE4273.84 (CTR 8• CHAN) MAV.802 Legend B-1 Boring Number and Approximate Location Reference: Topographic Survey Map Produced by Bush, Road & Hatchings, Inc., dated January, 2003. Ea TYPE 2 RN =277.93 E -271 (15(91P -W) E =27).08 (18- CMP -E) 0 40 Approximate Scale: 1' = 40 U: DFafing/25000iBainglocatiau 80 KLEINFEIDER Proposed Administration Building Tukwila School Disbid Tukwila, Washington Project 25000 January 2003 Site Plan FIGURE 2 1 KLEINFELDER APPENDIX A FIELD EXPLORATION ACTIVITES GEOTECHNICAL DRILLING We explored subsurface conditions at the site on January 3, 2003, by advancing a total of three borings (designated B -1 through B -3) to depths ranging from 10 to 17 feet below the existing site grade at the approximate locations indicated on the attached Figure 2 — Site Plan. The borings were drilled using a track- mounted, limited access, Mobile B -61 drill rig with continuous -flight hollow -stem augers. The boring locations were measured in the field by taping from existing site features. The locations should only be considered accurate to the degree implied by the location method used. Elevations presented on the boring logs were obtained from the Topographic Survey Map, produced by Bush, Roed & Hitchings, Inc. and dated January, 2003. The borings were monitored by our geologist who laid out specific boring locations, examined and classified the materials encountered, obtained representative soil samples, and recorded pertinent information including soil sample depths, stratigraphy, soil engineering characteristics, and groundwater occurrence. Soil samples were collected at 5 -foot intervals using Standard Penetration Test (SPT) sampling techniques (ASTM D- 1586). The SPT consisted of driving a 1 3/8 -inch inside diameter, split spoon sampler a distance of 18 inches into the bottom of the borehole. The sampler was driven with a 140 -pound hammer falling 30 inches. The number of blows required to drive the sampler each of three 6 -inch increments was recorded on the boring logs. The number of blows required for the last 12 inches of penetration is called the standard penetration resistance (N- value). This value is an indicator of the relative density of granular soils or the consistency of fine- grained soils. Representative soil samples were obtained and were classified in accordance with ASTM Standard D 2488. All samples were sealed to limit moisture loss, labeled, and returned to our laboratory for further examination and testing. The boring logs are presented in this appendix. The stratification lines, shown on the individual logs, represent the approximate boundaries between soil types; actual transitions may be either more gradual or more severe. The conditions depicted are for the date and location indicated only, and it should not necessarily be expected that they are representative of conditions at other locations and times. 25000 /SEA3R016.doc Page 1 of 1 Copyright 2003 Kleinfelder.com SOIL CLASSIFICATION CHART MAJOR DIVISIONS SYMBOLS TYPICAL DESCRIPTIONS GRAPH LETTER COARSE GRAINED SOIL MORE THAN 50% OF MATERIAL IS LARGER THAN NO. 200 SIEVE SIZE GRAVEL AND GRAVELLY SOILS THAN MORE Tw 50% OF COARSE FRACTION R SIEVE RETAINED ON NO. CLEAN GRAVELS (LITTLE OR NO FINES) ••°,7.• : • • ••• GW •• • • WELL- GRADED GRAVELS, GRAVEL - SAND MIXTURES, O% TO 15X FINES O p O ° o ° 0_0000_, soO O 0.0,;', GP POORLY- GRADED GRAVELS, GRAVEL -SAND MIXTURES, OX TO 15X FINES WITH FINES AMOUNTC 0 FINES) p • • ° • • o po . °o Do : GM SILTY GRAVELS, SILTY GRAVEL - SAND MIXTURES �•, •, Al ,• f ; r4.44 GC CLAYEY GRAVELS, CLAYEY GRAVEL- SAND MIXTURES SAND AND SANDY SOILS MORE THAN 50% OF COARSE PASSING ON NO. 4 SIEVE CLEAN SANDS (U TLE OR NO FINES) SW WELL-GRADED � O 15X FINES . . '.'.' ..'.'.'...�...'. SP POORLY- GRADED SANDS, GRAVELLY SAND, 0% TO 15X FINES SANDS WITH FINES (APPRECIABLE AMOUNT OF FINES) • •: ... - •'• - .:.:.. • • • - SM SILTY SANDS, SILTY SAND- GRAVEL MlxruRES . - . SC CLAYEY SANDS, CLAYEY SAND - GRAVEL MIXTURES FINE GRAINED SOIL MORE THAN 50% OF MATERIAL IS SMALLER THAN NO. 200 SIEVE SIZE SILTS UQUID UNIT AND LESS THAN 50 CLAYS ML INORGANIC SILTS AND VERY FINE CIAY PINT S NDSROR LCt..A SILTS WITH SUGHT PLASTICITY CL INORGANIC CLAYS OF LOW TO MEDIUM PLASTICITY, GRAVELLY CLAYS, SANDY CLAYS, SILTY CLAYS, LEAN CLAYS OL ORGANIC SILTS AND ORGANIC SILTY CLAYS OF LOW PLASTICITY SILTS UQUID UNIT AND S GREATER THAN 50 M H INORGANIC SILTS, MICACEOUS OR DIATOMACEOUS FINE SAND OR SILTY SOILS CH INORGANIC. CLAYS OF HIGH PLASTICITY • w OH ORGANIC CLAYS OF MEDIUM TO HIGH PLASTICITY HIGHLY ORGANIC. SOILS PT PEAT, HUMUS, SWAMP SOILS WITH HIGH ORGANIC CONTENTS NOTE: DUAL SYMBOLS ARE USED TO INDICATE BORDERUNE SOIL CLASSIFICATIONS IE KLEINFELDER Proposed Administration Building Tukwila School District Tukwila, Washington Project: 25000 January 2003, SOIL CLASSIFICATION LEGEND FIGURE A -1 2000 STANDARD IN /OUT 25000 -1.GPJ 2000REV.GDT 1/30/03 0 WELL/PIEZO CONSTRUCTION TESTING PRAM LABORATORY I FIELD 0 w OZ XU F U a F a a OTHER TESTS E a 3 a sea U SAMPLER * U.S C.S. a 0 CO • SOIL DESCRIPTION Su rface: landscaping 1 0 — 1 5 — 10 18 24 14 50/6" 50/6" 35 50/5" X S1 -1 S1 -2 S1 -3 ML SM Topsoil: dark brown, wet. SILT (ML): light brown, wet, soft, some gravel. (FILL) SILTY SAND (SM): light gray- brown, moist, dense, fine- to medium - grained: (GLACIAL TILL) - grades to very dense, with gravel. Boring completed to a depth of 16.4 feet below ground surface. Groundwater was not encountered during drilling. Boring was backfilled with a mixture of cuttings and bentonite chips. DATE DRILLED: 1 -3-03 LOGGED BY: S. Lewis REVIEWED BY: J. Schmidt SURFACE ELEVATION (feet): TOTAL DEPTH (feet): 16.4 DIAMETER OF BORING (in): 8" DRILLING METHOD: HSA DRILLER: Holt Drilling CASING SIZE: N/A RKLEINFELDER GEOTECHNICAL AND ENVIRONMENTAL ENGINEERS SOILS AND MATERIALS TESTING PROJECT NUMBER: 25000 Proposed Administration Building Tukwila School District Tukwila, Washington BORING LOG B -1 Appendix A -2 PAGE 1 of 1 2000 STANDARD IN/OUT 25000 -1.GPJ 2000REV GOT 4130103 . WELL/PIEZO s CONSTRUCTION w A 0 5 a TESTING PRAM LABORATORY I FIELD F 0 aN OTHER TESTS 8 Q 3 a 3` ° O n v C:a FLUX aW cnZ U.S.C.S. a 0 • SOIL DESCRIPTION Su rface: landscaping 10— 13 15 25 25 50/6" 50/2" S2 -1 S2 -2 sz 82-3 >, ML SM Topsoil: dark brown, wet. SILT (ML): light brown, moist to wet, medium stiff, trace sand. (FILL) SILTY SAND WITH GRAVEL (SM): light yellow- brown, moist, dense. (GLACIAL TILL) - grades to light gray- brown, very dense. Boring completed to a depth of 15.2 feet below ground surface. Groundwater was not encountered during drilling. Boring was backfilled with a mixture of cuttings and bentonite chips. DATE DRILLED: 1 -3 -03 LOGGED BY: S. Lewis REVIEWED BY: J. Schmidt SURFACE ELEVATION (feet): TOTAL DEPTH (feet): 15.2 DIAMETER OF BORING (in): 8" DRILLING METHOD: HSA DRILLER: Holt Drilling CASING SIZE: N/A KLEINFELDER GEOTECHNICAL AND ENVIRONMENTAL ENGINEERS SOILS AND MATERIALS TESTING PROJECT NUMBER: 25000 Proposed Administration Building Tukwila School District Tukwila, Washington BORING LOG B -2 Appendix A -3 PAGE 1 of 1 0 a. a a TESTING P ' BLOWS /6 in ** (uncorrected) SAMPLER * aw a I (4, U.S.C.S LABORATORY FIELD a WELIJPIEZO w o 5 E t,� H s o SOIL DESCRIPTION x CONSTRUCTION a E; � x 44 n F °' A Z 1 t W W E� E.,, �v) �W U .] doc p; w v7 A 3 O a o x U a i Z O a Surface: landscaping 0 ";' ^_' Topsoil: dark brown vet. - SM ;: ` '; . SILTY SAND WITH GRAVEL (SM): _ - - : light brown, moist to wet, loose. (FILL) 8 S3 -1 SM ---SILTY SAND WITH GRAVEL (SM): 12 :: light gray- brown, moist to wet, medium dense. 14 (GLACIAL TILL) -' 8 S3 -2 - grades to dense. - - 14 25 10 - 32 S3 -3 - grades to very dense. 10.8 50/3" " Boring completed to a depth of 10.8 feet below ground surface.. Groundwater was not encountered drilling. Boring was backfilled with a mixture of cuttings and bentonite chips. , i DATE DRILLED: 1 -3 -03 SURFACE ELEVATION (feet): DRILLING METHOD: HSA LOGGED BY: S. Lewis TOTAL DEPTH (feet): 10.8 DRILLER: Holt Drilling REVIEWED BY: J. Schmidt DIAMETER OF BORING (in): 8" CASING SIZE: N/A . kl 1 1 Proposed Administration Building Tukwila School District Appendix , KLEINFELDER Tukwila, Washington A - 4 GEOTECHN1CAL AND ENGINEERS SOILS AND MATERRIALTESTING BORING LOG 1 PROJECT NUMBER: 25000 B -3 PAGE 1 of 1 0o RCM KLEINFELDER APPLICATION FOR AUTHORIZATION TO USE Proposed Administration Building Tukwila School District Tukwila, Washington KLEINFELDER PROJECT NUMBER 25000 January 30, 2003 TO: Kleinfelder, Inc. 2405 - 140th Avenue Northeast, Suite A101 Bellevue, Washington 98005 FROM: Applicant hereby applies for permission to: [State here the use(s) contemplated] for the purpose(s) of: (State here why you wish to do what is contemplated as set forth above( Applicant understands and agrees that Kleinfelder, Inc. is the copyright owner of the above identified report and that unauthorized use or copying of the above identified report is strictly prohibited without the express written permission of Kleinfelder, Inc. and Kleinfelder's client. Applicant understands that Kleinfelder, Inc. and/or Kleinfelder's client, may withhold such permission at its sole discretion, or grant such permission upon such terms and conditions as it deems acceptable. Dated: Applicant by 25000/SEA3R016.doc Page l of 1 Copyright 2003 Kleinfelder, Inc. OCT 0 ? 2003 ofattivv, Endangered Species Act Screening Checklist 411 City of Tukwila ESA Screening Checklist RECEIVED AUG 2 11 2003 City of Tukwila Date: le/7/ COMMUNITY DEVELOPMENT Applicant Name: Street Address: SGN STr&ler 4�iro Sb-7M 141/7 -., 37rteer City, State, Zip: A....,. A , LJ" 2814.8 Telephone: (204) 470/ — 8003 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. ec),3 -022_ May 24, 2001 1 City of Tukwila ESA Screening Checklist 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 (see Tukwila Municipal Code (TMC) Chapter 18.06, Zoning Code, Page 18 -11). Please circle appropriate response. NO - Continue to Question 2 -0 ail 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 (see Chapter 18.06, Page 18 -8). Please circle appropriate response. NO - Continue to Question 3 -0 • YES - ontinue 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. )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 (see TMC Chapter 18.06, Tukwila Zoning Code, Page 18 -11). This includes fuel or other chemicals stored on -site during construction. Please circle appropriate response. NO Continue 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 and 18.45.080E.4, or would require a geotechnical report if not exempt under TMC 18.45.080A, should answer Yes. Please circle appropriate res s onse. NO ontinue to Question 6 -0 YES - Continue to Question 6 -0 May 24, 2001 2 City of Tukwila ESA 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 (see TMC Chapter 18.06, Tukwila Zoning Code, Page 18- 13). For the purpose of this analysis, this includes the establishment of new lawn or grass. Please circle appropriate response. Checklist Complete YES — 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. NO ontinue 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. ontinue 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 (see TMC Chapter 18.06, Tukwila Zoning Code, Page 18 -12). 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. Please circle appropriate response. NO - Continue to Question 2 -0 (Page 2) Continue to Question 1 -4 May 24, 2001 3 City of Tukwila ESA 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 stonnwater, answer Yes to this question. Please circle appropriate response. NO - Continue to Question 2 -0 (Page 2) YES 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. NO 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 -4 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 watercourse or the Green /Duwamish or Black Rivers? Please circle appropriate response. � dirk - 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 watercourse or the Green /Duwamish or Black Rivers? Please circle appropriate response. NO - Continue to Question 3 -0 (Page 2) YES - Continue to Question 3 -0 (Page 2) May 24, 2001 4 City of Tukwila ESA 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. NO - Continue to Question 3 -6 YES - Continue to Question 3 -6 May 24, 2001 5 • I City of Tukwila ESA Screening Checklist Part D (continued) 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) May 24, 2001 6 • • City of Tukwila ESA Screening Checklist Evaluation Form (City Use) The following questions and evaluation matrix are intended to provide threshold information for your project or action that is specific to the location of the project or action relative to salmonid- bearing watercourses or rivers in the City of Tukwila. If you answered Yes to any questions on the screening checklist, please answer the following questions. ADDITIONAL INFORMATION Will the project or action occur in the drainage basin for Gilliam Creek, Southgate Creek, Pal Creek, or Riverton Creek? (circle answer) Yes Continue to Al. No Continue to A2. Al. Is your project or action in that portion of the drainage basins upstream of the general salmonid range of these watercourses as shown on the City's outfall map? (circle answer) Yes Check Path A Below. No Check Path B Above. A2. Will the project or action drain or outfall directly to the Duwamish/ Green River or Black River without first draining to a separate watercourse? (circle answer) Yes Check Path C Below. No Continue to A -3. A3. You have indicated that the project or action is located in a drainage basin containing a watercourse that does not support salmonid fish use. Do you have specific knowledge that indicates that salmonid fish -use occurs in this watercourse? (circle answer) o Path A Yes Check Path B Below. No . Check Path A Below. o Path B o Path C Once you have checked the appropriate box, proceed to the evaluation matrix on the following page. May 24, 2001 7 • . City of Tukwila ESA Screening Checklist EVALUATION MATRIX The following matrix evaluates the project or action's potential for take based on all of your answers to the questions in the screening checklist. The matrix is organized using the same question levels as the screening checklist. Based on the box you checked at the end of the preceding page, follow the appropriate path across the matrix (Path A, B, or C), circling or shading the appropriate box for each question. Numbers provided in parentheses ( ) refer to the rationale for the determination of "no- take" or "take ". Refer to the Rationale section, below, for an explanation. Section 1 This question on the screening checklist addresses the discharge of stornmater to another basin. Fish presence at the site in the receiving basin should be evaluated. Section 2 Evaluation Matrix Questions and Answers From Screening Checklist Path 1 -1 Yes 1 -2 Yes Path A No take indicated (1) Take of coho, cutthroat, and chinook is indicated (3) Path B Take of coho and cutthroat is indicated (2) Take of coho, cutthroat, and chinook is indicated (2)(3) Path C Take of coho, cutthroat, and chinook is indicated (2) Take of coho, cutthroat, and chinook is indicated (2)(3) This question on the screening checklist addresses the discharge of stornmater to another basin. Fish presence at the site in the receiving basin should be evaluated. Section 2 Evaluation Matrix Section 3 Evaluation Matrix May 24, 2001 8 Questions and Answers from Screening Checklist Path 2 -3 Yes 2 -4 Yes 2 -5 Yes Path A No Take indicated (1)(4) No Take indicated (l)(4) Take of coho, cutthroat, and chinook is indicated (2)(3) Path B Take of coho and cutthroat is indicated (2)(3) Take of coho and cutthroat is indicated (2)(3) Take of coho, cutthroat, and chinook is indicated (2)(3) Path C Take of coho, cutthroat, and chinook is indicated (2) Take of coho, cutthroat, and chinook is indicated (2) Take of coho, cutthroat, and chinook is indicated (2)(3) Section 3 Evaluation Matrix May 24, 2001 8 • • City of Tukwila ESA Screening Checklist Section 3 Evaluation Matrix Cont. Questions and Answers from Screening Checklist Path 3 -1 Yes 3 -2 Yes 3 -3 Yes 3 -4 Yes Path A No take indicated (1) N/A No take indicated (1) No take indicated (1) Path B Take of coho and cutthroat is indicated (2)(3) N/A Take of coho and cutthroat is indicated (2) Take of coho and cutthroat is indicated (2)(3) Path C Take of coho, cutthroat, and chinook is indicated (2)(3) Take of coho, cutthroat, and chinook is indicated (2)(3) Take of coho, cutthroat, and chinook is indicated (2) Take of coho, cutthroat, and chinook is indicated (2)(3) Section 3 Evaluation Matrix Cont. Section 4 Evaluation Matrix Question and Answer from Screening Checklist Path 4 -0 Yes Paths A, B or C Take of coho, cutthroat, and chinook is indicated (3) May 24, 2001 9 Questions and Answers from Screening Checklist Path 3 -5 Yes 3 -6 Yes 3 -7 Yes 3 -8 Yes Path A No take indicated (1)(4) Take of coho and cutthroat is indicated (3) No take indicated (1)(4) No take indicated (1)(4) Path B Take of coho and cutthroat is indicated (2)(3) Take of coho and cutthroat is indicated (2)(3) Take of coho and cutthroat is indicated (2)(3) Take of coho and cutthroat is indicated (2)(3) Path C Take of coho, cutthroat, and chinook is indicated (2)(3) No take indicated (1)(4) Take of coho, cutthroat, and chinook is indicated (2)(3) Take of coho, cutthroat, and chinook is indicated (2)(3) Section 4 Evaluation Matrix Question and Answer from Screening Checklist Path 4 -0 Yes Paths A, B or C Take of coho, cutthroat, and chinook is indicated (3) May 24, 2001 9 City of Tukwila Screening Checklist Section 5 Evaluation Matrix Question and Answer from Screening Checklist Path 5 -0 Yes Paths A, B or C Take of coho and cutthroat is indicated (3) Section 6 Evaluation Matrix Question and Answer from Screening Checklist Path 6 -0 Yes Paths A, B or C Take of coho, cutthroat, and chinook is indicated (3) Rationale 1 - No salmonid use occurs within areas directly affected by the project. This action is not anticipated to have a direct effect on salmonids and is not anticipated to result in take as a result of direct affects. (Note: Indirect impacts are evaluated separately.) 2 - Habitats in these watercourses or rivers are either directly used by salmonids or support pathway- indicator relationships that are critical for salmonids. Actions effecting these habitats may result in the take of a salmonid. 3 All projects in the City ultimately drain to salmonid- bearing waters. The results of these actions may result in significant secondary alteration to receiving waters that may support salmonid use. Significant secondary effect to these areas may result in the take of salmonids using habitats in these areas. 4 - All projects in the City ultimately drain to salmonid- bearing waters. The results of these actions are not anticipated to result in a significant change in the receiving bodies or they may result in a change but are not anticipated to result in an affect to salmonids or a critical habitat element. May 24, 2001 10 )5„30" -°trDc" • A. BACKGROUND • Control No. Epic File No. 803 ---02:Li Fee: Receipt No. ENVIRONMENTAL CHECKLIST 1. Name of proposed project, if applicable: New Tukwila School District Administration Building 2. Name of applicant: Tukwila School District RECEIVED 'AUG 2112003! COMMUNITY DEVELOPMENT 3. Address and phone number of applicant and contact person: ADDRESS Applicant Contact Contact: Bill Van de Bogert Contact: Craig McClelland Tukwila School District No. 406 BJSS Duarte Bryant 4640 South 144th Street 724 Columbia St. NW, Suite 400 Tukwila, WA 98168 Olympia, WA 98501 (360) 943 -4650 4. Date checklist prepared: August 20, 2003 5. Agency requesting checklist: City of Tukwila. 6. Proposed timing or schedule (including phasing, if applicable): It is anticipated that demolition will begin in September and construction activities will begin October 21, and be completed by June 2004.. 7. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain. No. 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. Page 1 • ENVIRONMENTAL CHECKLIST Dennis O'Neal from Kleinfelder Inc. has prepared a review of the soils around the existing oil tank. He found that the tank has some residual oil that will be removed and that the soils where clean of contaminants. The tank will be removed under the demolition pern►it. See previous demolition SEPA and demolition permit. 9. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your proposal? If yes, explain. No. 10. List any government approvals or permits that will be needed for your proposal. Conditional use permit, building permit and demolition permit. Clearing and grading permit and sewer permit may also be required. 11. 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. Section E requires a complete description of the objectives and alternates of your proposal and should not be summarized here. We will be demolishing the existing office building at 4640 South 144th Street and removing the existing portable. We will be building a new wood framed 7,700 SF single story office building on the same site. We do not require additional parking and will remain within the confined of the existing paving. The site is one corner of the much larger campus. 12. 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, and section, township, and range, if known. 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. The project is located in the City of Tukwila at 4640 S. 144th Street, on the campus of Showalter Middle School. 13. Does the proposal lie within an area designated on the City's Comprehensive Land Use Policy Plan Map as environmentally sensitive? No. Page 2 ENVIRONMENTAL CHECKLIST B. ENVIRONMENTAL ELEMENTS 1. Earth a. General description of the site (underline one): Flat, rolling, hilly, steep slopes, mountainous, other: With 5' slope to the east. b. What is the steepest slope on the site (approximate percent slope)? A small portion of the site has a 25% slope. Most of the site is 4 %. 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. 3 " -12" brown organic topsoil over silty sand and gravel fill over glacial till with silty sand and gravels. d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. No. e. Describe the purpose, type, and approximate quantities of any filling or grading proposed. Indicate source of fill. We may create a small retaining wall to the east and backfill to it. Grading will be minimal to fill against foundation and drain water away. f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe. g. At the existing slope erosion could occur. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? Within the confines of the existing paving impervious coverage will increase slightly within the entire campus site. The increase is negligible. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any: Compliance with city erosion control standards. Page 3 ENVIRONMENTAL CHECKLIST 2. Air a. What types of emissions to the air would result from the proposal (i.e., dust, automobile odors, industrial wood smoke) during construction and when the project is completed? If any, generally describe and give approximate quantities if known. Normal sawdust and construction dust during construction. b. Are there any off -site sources of emissions or odor that may affect your proposal? If so, generally describe. No. c. Proposed measures to reduce or control emissions or other impacts to air, if any: None proposed. 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. No. 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. 4) Will the proposal require surface water withdrawals or diversions? Give general description, purpose, and approximate quantities, if known. No. 5) Does the proposal lie within a 100 -year floodplain? If so, note location on the site plan. No. Page 4 • ENVIRONMENTAL CHECKLIST • 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. Water will not be withdrawn or discharged to the ground other than irrigation. 2) Describe waste materials that will be discharged into the ground from septic tanks or other sources, if any (for example: Domestic sewage; industrial, containing the 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 into other waters? If so, describe. An existing stormwater system collects runoff from impervious surfaces. The new building will either tie in the existing system or to the storm water system in the street. This stormwater is collected on -site and tied into the existing stormwater system at Showalter Middle School. 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: Compliance with city stormwater management requirements. Page 5 • ENVIRONMENTAL CHECKLIST 4. Plants a. Check or circle types of vegetation found on the site: • b. What kind and amount of vegetation will be removed or altered? Existing landscaping around the building will he removed and similar landscaping added around the new building. c. List threatened or endangered species known to be on or near the site. None. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any: Landscaping will be added to meet City of Tukwila requirements. 5. Animals a. Circle any birds or animals which have been observed on or near the site or are known to be on or near the site: None Birds: Mammals: Fish: Other: b. List any threatened or endangered species known to be on or near the site. None. c. Is the site part of a migration route? If so, explain. No. Page 6 deciduous tree: alder, maple, aspen, other evergreen tree: fir, cedar, pine, other shrubs grass pasture crop or grain wet soil plants: cattail, buttercup, bulrush, skunk cabbage, other water plants: water lily, eel grass, milfoil, other other types of vegetation b. What kind and amount of vegetation will be removed or altered? Existing landscaping around the building will he removed and similar landscaping added around the new building. c. List threatened or endangered species known to be on or near the site. None. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any: Landscaping will be added to meet City of Tukwila requirements. 5. Animals a. Circle any birds or animals which have been observed on or near the site or are known to be on or near the site: None Birds: Mammals: Fish: Other: b. List any threatened or endangered species known to be on or near the site. None. c. Is the site part of a migration route? If so, explain. No. Page 6 ENVIRONMENTAL CHECKLIST d. Proposed measures to preserve or enhance wildlife, if any: None proposed. 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. Electricity will be used for lights, heating, and communications. Natural gas will be used for heating and cooling. 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: The building will he insulated to meet current Washington State Codes. Natural daylight is being used to augment lights. 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. None known. 1) Describe special emergency services that might be required. None beyond hfpical office use.. 2) Proposed measures to reduce or control environmental health hazards, if any: None proposed. b. Noise 1) What types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other)? Existing noise in the area will not affect the project. Page 7 • ENVIRONMENTAL CHECKLIST 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. Machinery and equipment noise will be created during construction. Typical construction hours range from 7:OOam- 6:OOpm. 3) Proposed measures to reduce or control noise impacts, if any: Construction activihj will he limited to daylight hours. 8. Land and Shoreline Use a. What is the current use of the site and adjacent properties? The site is currently being used for an Administrative Office Building. Adjacent uses include, Showalter Middle School and single-family residences located across S. 144th Street and to the east. b. Has the site been used for agriculture? If so, describe. To our knowledge, the site has not been previously used for agriculture. c. Describe any structures on the site. An Administrative Office Building and a portable, being used for the same thing. d. Will any structures be demolished? If so, what? The existing Administrative Building will be demolished and the portable removed or demolished. e. What is the current zoning classification of the site? Low - density residential. f. What is the current comprehensive plan designation of the site? Low - density residential with public recreation overlay. g. If applicable, what is the current shoreline master program designation of the site? N/A h. Has any part of the site been classified as an "environmentally sensitive" area? If so, specify. No. Page 8 ENVIRONMENTAL CHECKLIST • i. Approximately how many people would reside or work in the completed project? No additional employees are anticipated. j• Approximately how many people would the completed project displace? None. k. Proposed measures to avoid or reduce displacement impacts, if any: None proposed. 1. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any: The proposed use is the same as the existing use. 9. Housing a. Approximately how many units would be provided, if any? Indicate whether high, middle, or low - income housing? None. 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 proposed. 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? The building ridge will be approximately 25'. Proposed exterior materials are brick or masonry, hardiplank and a standing seam metal roof 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 new building will be better looking than the existing. The proposed design will be nice but will not standout in the neighborhood. Page 9 • ENVIRONMENTAL CHECKT 11. Light and Glare a. What type of light or glare will the proposal produce? What time of day would it mainly occur? Exterior lights for security will he focused not to produce offsite glare. b. Could light or glare from the finished project be a safety hazard or interfere with views? No. 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: None proposed. 12. Recreation a. What designed and informal recreational opportunities are in the immediate vicinity? Located on the high school campus are tennis courts and ball fields. The existing track and field facilities are used informally by the public. Near the site is the city pool. b. Would the proposed project displace any existing recreational uses? If so, describe. No. 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. No. b. Generally describe any landmarks or evidence of historic, archaeological, scientific, or cultural importance known to be on or next to the site. None known. Page 10 ENVIRONMENTAL CHECKLIST c. Proposed measures to reduce or control impacts, if any: None proposed. • 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. The site is served by S. 144th Street, with access to the site via a driveway from Showalter Middle School. b. Is the site currently served by public transit? If not, what is the approximate distance to the nearest transit stop? The site is served by Metro route 142, with a bus stop at the intersection of S. 144t Street and 42"d Avenue. c. How many parking spaces would the completed project have? How many would the project eliminate? We are not adding or deleting any parking. The existing combined Showalter and Administrative parking is 111. The required parking is 99 stalls. 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. e. Will the project use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. No. f. How many vehicular trips per day would be generated by the completed project? If known, indicate when peak volumes would occur. Vehicular trips will remain the same. g. Proposed measures to reduce or control transportation impacts, if any: None proposed. Page 11 • ENVIRONMENTAL CHECKLIST 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. No. b. Proposed measures to reduce or control direct impacts on public services, if any. None proposed. 16. Utilities a. Underline utilities currently available at the site: electricity, natural gas, water, refuse service, telephone, sanitary sewer, septic system, other. 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. Electricity: The existing building is served underground from an electrical vault in the planter strip. The new building will be served the same way. Water: The existing building is served from an existing water vault on site. The new building will be served the same way. Natural Gas: The existing building is served by a 2" gas main on S. 144th Street. The new will do the same. Telephone: Underground TV cable and underground telephone are available on site. Sanitary Sewer: A 4" line, leading to an onsite 8" line to and 8" line in the street is available. Storm Drain: An existing 6" storm drain serves the site from the north. This ties into Showalter's system. A 12" line also serves an existing catch basin in the street, leading to an 18" line. The building will utilize one or the other depending on the pre - application meeting. Page 12 ENVIRONMENTAL CHECKLIST C. SIGNATURE • The above answers are true and complete to the best of my knowledge. I understand that the lead agency is relying on them to make its decision. /\ ` /I �j Signature: ,� Craig cClelland, Architect Date Submitted: 8/21/0 3 Page 13 ENVIRONMENTAL CHECKLIST F. SUPPLEMENTAL SHEET FOR ALL PROJECT AND NON PROJECT PROPOSALS The objectives and the alternative means of reaching the objectives for a proposal will be helpful in reviewing the foregoing items of the Environmental Checklist. This information provides a general overall perspective of the proposed action in the context of the environmental information provided and the submitted plans, documents, supportive information, studies, etc. 1. What are the objectives of the proposal? To replace an aging Administration Building with a new Administration Building. 2. What are the alternative means of accomplishing these objectives? Build a new Administration Building off - campus. 3. Please compare the alternative means and indicate the preferred course of action: The Owner's would prefer to utilize the land they own and keep the campus cohesive. 4. Does the proposal conflict with policies of the Tukwila Comprehensive Land Use Policy Plan? No. 5. Proposed measures to avoid or reduce the conflict(s) are: None proposed. Page 14 STATE OF WASHINGTON CITY OF TUKWILA Department of Community Development 6300 Southcenter Boulevard, Tukwila, WA 98188 Telephone: (206) 431 -3670 FAX, (206) 431 -3665 E -mail: tukplan@ci.tukwila.waus AFFIDAVIT OF OWNERSHIP AND HOLD HARMLESS PERMISSION TO ENTER PROPERTY ss COUNTY OF KING The undersigned being duly sworn and upon oath states as follows: I . I am the current owner of the property which is the subject of this application. 2. All statements contained in the applications have been prepared by me or my agents and are true and correct to the best of my knowledge. 3. The application is being submitted with my knowledge and consent 4. Owner grants the City, its employees, agents, e9gin�r contractors or thFr tgpres n tives the right to enter upon Owner's real property, located at � (o �Q GD �--• - l }} .t '"t for the purpose of application review, for the limited time necessary to complete that purpose. 5. Owner agrees to hold the City harmless for any loss or damage to persons or property occurring on the private property during the City's entry upon the property, unless the loss or damage is the result of the sole negligence of the City. 6. The City shall, at its discretion , cancel the application without refund of fees, if the applicant does not respond to specific requests for items on the "Complete Application Checklist" within ninety (90) days. 7. Non - responsiveness to a City information request for ninety (90) or more days, shall be cause to cancel the application(s) without refund of fees. EXECUTED at 1101K so-01 \ 1\ G. (city), ►mil (state), on ]-7(0-; a Y1 i ) Print Name) T l+ ` 96 40 50u-1/1 L) (Address) Ol c) -3 (Phone Number) (Signature) On this day personally -appeared before me to me known to be the individual who executed the foregoing instrument and acknowledged that he/she signed the same as his/her voluntary act and deed for the uses and purposes mentioned therein. SUBSCRIBED AND SWORN TO BEFORE ME ON THIS � � DAY OF VS.t Y PUB11f'in an for the State of Was mgton L. CAROENASresidin at LAJG wui -( STATE OF WASHING rito mission expires on 10— C(4 3 NOTAR\ O Bi IC MY COMVISSIT1 E.Xc'RFS .0 ('4."3' • CITY OF TUKWILA Department of Community Development 6300 Southcenter Boulevard, Tukwila, WA 98188 Telephone: (206) 431 -3670 FAX (206) 431 -3665 E -mail: tukplan(a,ci.tukwila.wa.us • SEPA ENVIRONMENTAL REVIEW APPLICATION NAME OF PROJECT/DEVELOPMENT: A A Dw��. -{ tsTI .0T t ,1 orf=,c C- Ti 21 7".s A 3Gwoo t. 5 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. 464,0 3007.4 /47, 3/ )cc7 %ry %tv•i. /� Li^ 78/6 6 /5'2309 - 9 6 - o, Quarter: Section: /6 Township: 23 Range: (This information may be found on your tax statement.) EA. sr 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, and • is the primary contact with the City, to whom all notices and reports will be sent. / e aAl G ! C(� LL LC.A..i l=> Name: Address: Phone: Signature: 72f, 134,0) Si-3 -37"12.e-C7 Al' u7r 400 D�b., ?�, U/a FAX: (3(0o) 357- 94o2 `l Date: ,�/ A 3 P \Red_Book \SEPA_APP.DOC, 01/23/03 9650 / FOR STAFF USE ONLY SIERRA TYPE P -SEPA Planner: File Number: S-03 _ 0/2, Application Complete (Date: ) Project File Number: f2E03 -u09 Application Incomplete . (Date: ) Other File Numbers: L 0 b .- ()al , 1-03.0 NAME OF PROJECT/DEVELOPMENT: A A Dw��. -{ tsTI .0T t ,1 orf=,c C- Ti 21 7".s A 3Gwoo t. 5 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. 464,0 3007.4 /47, 3/ )cc7 %ry %tv•i. /� Li^ 78/6 6 /5'2309 - 9 6 - o, Quarter: Section: /6 Township: 23 Range: (This information may be found on your tax statement.) EA. sr 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, and • is the primary contact with the City, to whom all notices and reports will be sent. / e aAl G ! C(� LL LC.A..i l=> Name: Address: Phone: Signature: 72f, 134,0) Si-3 -37"12.e-C7 Al' u7r 400 D�b., ?�, U/a FAX: (3(0o) 357- 94o2 `l Date: ,�/ A 3 P \Red_Book \SEPA_APP.DOC, 01/23/03 9650 / 1 SITEJ c� UKW S 154TH ST S 144TH ST VC\TY V AP NO SCALE • RECEIVED AUG 21 2003 COMMuNiTY DEVELOPMENT