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HomeMy WebLinkAboutPermit D18-0212 - CITY OF TUKWILA - RETAINING WALLCITY OF TUKWILA RETAINING WALL 6847 S 180T" ST 018-0212 Parcel No: Address: Project Name: City of Tukwila Department of Community Development 6300 Southcenter Boulevard, Suite #100 Tukwila, Washington 98188 Phone: 206-431-3670 Inspection Request Line: 206-438-9350 Web site: http://www.TukwilaWA.gov DEVELOPMENT PERMIT 3623049079 6847 S 180TH ST CITY OF TUKWILA - RETAINING WALL Permit Number: D18-0212 Issue Date: 9/24/2018 Permit Expires On: 3/23/2019 Owner: Name: Address: Contact Person: Name: Address: Contractor: Name: Address: License No: Lender: Name: CORPORATION OF THE CATHOLIC 710 9TH AVE , SEATTLE, WA, 98104 RYAN LARSON Phone: (206) 431-2456 6300 SOUTHCENTER BLVD - SUITE 100 , TUKWILA, WA, 98188 CECCANTI INC Phone: (253) 537-2990 4116 BROOKDALE RD EAST , TACOMA, WA, 98446 CECCAI*227CB Expiration Date: 4/30/2019 CITY OF TUKWILA Address: 6300 SOUTHCENTER BLVD , TUKWILA, WA, 98188 DESCRIPTION OF WORK: AT THIS PARTICULAR LOCATION THE CITY IS PROPOSING TO RAISE AN EXISTING RETAINING WALL AND CONNECT TO THE S 180 ST BRIDGE ABUTMENT ON THE SOUTH SIDE OF THE BRIDGE. THE SITE ADDRESSES A FREEBOARD DEFICIENCY THAT WAS IDENTIFIED IN THE RECENT LEVEE CERTIFICATION ANALYSIS. THE EXISTING RETAINING WALL ON THE SOUTH SIDE OF THE BRIDGE TAPERS FROM ELEVATION 35.5' TO 31.9' AS IT TAPERS UNDER THE EXISITNG BRIDGE ALONG THE PILE CAP. THIS GAP LEAVES A VULNERABLE VOID IN THE LEVEE THAT COULD POTENTIALLY FLOOD THE NEARBY PARCELS IN A FLOOD EVENT. THE RETAINING WALL WORK SHALL BE DONE ON THE UPHILL SIDE (WEST) OF THE GREEN RIVER TRAIL AND THERE SHALL BE NO BANK EXCAVATION. Project Valuation: $45,000.00 Type of Fire Protection: Sprinklers: NO Fire Alarm: NO Type of Construction: Electrical Service Provided by: TUKWILA Fees Collected: $1,596.84 Occupancy per IBC: U Water District: TUKWILA Sewer District: TUKWILA Current Codes adopted by the City of Tukwila: r' International Building Code Edition: International Residential Code Edition: International Mechanical Code Edition: Uniform Plumbing Code Edition: International Fuel Gas Code: 2015 2015 2015 2015 2015 National Electrical Code: WA Cities Electrical Code: WAC 296-46B: WA State Energy Code: 2017 2017 2017 2015 Public Works Activities: Channelization/Striping: Curb Cut/Access/Sidewalk: Fire Loop Hydrant: Flood Control Zone: Hauling/Oversize Load: Land Altering: Landscape Irrigation: Sanitary Side Sewer: Sewer Main Extension: Storm Drainage: Street Use: Water Main Extension: Water Meter: Volumes: Cut: 0 Fill: 0 Number: 0 1 No Permit Center Authorized Signature: Date: (%1/off///v I hearby certify that I have read and examined this permit and know the same to be true and correct. All provisions of law and ordinances governing this work will be complied with, whether specified herein or not. The granting of this permit does not presume to give authority to violate or cancel the provisions of any other state or local laws regulating construction or the performance of work. I am authorized to sign and obtain this development permit and agree to the conditions attached to this permit. Signature75 Date: / r 2 y I AS S Print Name: This permit shall become null and void if the work is not commenced within 180 days for the date of issuance, or if the work is suspended or abandoned for a period of 180 days from the last inspection. PERMIT CONDITIONS: 1: ***BUILDING PERMIT CONDITIONS*** 2: Work shall be installed in accordance with the approved construction documents, and any changes made during construction that are not in accordance with the approved construction documents shall be resubmitted for approval. 3: All permits, inspection record card and approved construction documents shall be kept at the site of work and shall be open to inspection by the Building Inspector until final inspection approval is granted. 4: The special inspections and verifications for concrete construction shall be as required by IBC Chapter 17, Table 1705.3. 5: The special inspections for steel elements of buildings and structures shall be required. All welding shall be done by a Washington Association of Building Official Certified welder. 6: The special inspection of bolts to be installed in concrete prior to and during placement of concrete. 0 Q 7: When special inspection is required, either the owner or the registered design professional in responsible charge, shall employ a special inspection agency and notify the Building Official of the appointment prior to the first building inspection. The special inspector shall furnish inspection reports to the Building Official in a timely manner. 8: A final report documenting required special inspections and correction of any discrepancies noted in the inspections shall be submitted to the Building Official. The final inspection report shall be prepared by the approved special inspection agency and shall be submitted to the Building Official prior to and as a condition of final inspection approval. 9: All construction shall be done in conformance with the Washington State Building Code and the Washington State Energy Code. 10: Notify the City of Tukwila Building Division prior to placing any concrete. This procedure is in addition to any requirements for special inspection. 11: Remove all demolition rubble and loose miscellaneous material from lot or parcel of ground, properly cap the sanitary sewer connections, and properly fill or otherwise protect all basements, cellars, septic tanks, wells, and other excavations. Final inspection approval will be determined by the building inspector based on satisfactory completion of this requirement. 12: Preparation before concrete placement: Water shall be removed from place of deposit before concrete is placed unless a tremie is to be used or unless otherwise permitted by the building official. All debris and ice shall be removed from spaces to be occupied by concrete. 13: VALIDITY OF PERMIT: The issuance or granting of a permit shall not be construed to be a permit for, or an approval of, any violation of any of the provisions of the building code or of any other ordinances of the City of Tukwila. Permits presuming to give authority to violate or cancel the provisions of the code or other ordinances of the City of Tukwila shall not be valid. The issuance of a permit based on construction documents and other data shall not prevent the Building Official from requiring the correction of errors in the construction documents and other data. 14: ***PUBLIC WORKS PERMIT CONDITIONS*** 15: The applicant or contractor must notify the Public Works Inspector at (206) 433-0179 upon commencement and completion of work at least 24 hours in advance. All inspection requests for utility work must also be made 24 hours in advance. 16: Prior to construction, all utilities in the vicinity shall be field located. NOTE: For City of Tukwila utility locates, call 811 or 1-800-424-5555. 17: Permit (work not within the S. 180th Street right-of-way) is valid between the weekday hours of 7:00 a.m. and 10:00 p.m. only. Coordinate with the Public Works Inspector for any work after 5:00 p.m. and weekends. 18: Work affecting traffic flows shall be closely coordinated with the Public Works Inspector. Traffic Control Plans shall be submitted to the Inspector for prior approval. 19: Any material spilled onto any street shall be cleaned up immediately. 20: Temporary erosion control measures shall be implemented as the first order of business to prevent sedimentation off-site or into existing drainage facilities. 21: The site shall have permanent erosion control measures in place as soon as possible after final grading has been completed and prior to the Final Inspection. 22: South 180th Street and West Valley Highway is a high traffic volume intersection. East bound outside lane closure on South 180th Street WILL NOT be allowed during peak traffic hours. South 180th Street East bound outside lane closure / work hours shall be from 7:00 p.m. to 6 a.m. ONLY. Coordinate work & lane closure hours with the Public Works Inspector. 23: The Contractor to provide a copy of the Certificate of Insurance Coverage (minimum of $2,000,000 naming the City of Tukwila as additionally insured). 24: Prior to issuance of this permit the Contractor shall sign w/Notary a ROW Hold Harmless Agreement for work within the Public right-of-way. 25: Obtain permission / temporary access easement from Private Property Owner if needed to access work site. PERMIT INSPECTIONS REQUIRED Permit Inspection Line: (206) 438-9350 11 1700 BUILDING FINAL** 0301 CONCRETE SLAB 5200 EROSION MEASURES 5210 EROSION MEASURES FNL 0201 FOOTING 0200 FOUNDATION WALL 1600 PUBLIC WORKS FINAL 4037 SI -CAST -IN-PLACE 4000 SI -CONCRETE CONST 4046 SI-EPDXY/EXP CONC 4028 SI-REINF STEEL -WELD 5100 STREET USE 0 CITY OF TUKA Community Development Department Public Works Department Permit Center 6300 Southcenter Blvd., Suite 100 Tukwila, WA 98188 http://www.TukwilaWA.gov Building Permit No. D1 (6/M Project No. � 2) I Date Application Accepted: I (6 Date Application Expires: 1 I (For office se on tv) CONSTRUCTION PERMIT APPLICATION Applications and plans must be complete in order to be accepted for plan review. Applications will not be accepted through the mail or by fax. **Please Print** SITE LOCATION Site Address: Latitude: 47.441 Longitude: -122.246 Tenant Name: King Co Assessor's Tax No.: 3623049079 - Wells Fargo Suite Number: Floor: New Tenant: ❑ Yes El ..No Within Flood Protection Levee Easement - COT k&iU1ij\ %i\\ PROPERTY OWER Name: Ryan Larson, PE. - Project Manager Name: Easement for - City of Tukwila City: Tukwila State: WA Zip: 98188 Address: 6300 Southcenter Blvd. Email: Ryan.larson@tukwilawa.gov City: Tukwila State: Wa Zip: 98188 CONTACT PERSON — person receiving all project communication Name: Ryan Larson, PE. - Project Manager Address: 6300 Southcenter Blvd. City: Tukwila State: WA Zip: 98188 Phone: (206) 431-2456 Fax: Email: Ryan.larson@tukwilawa.gov GENERAL CONTRACTOR INFORMATION Company Name: Company Name: PSM Consulting Company Name: Engineer Name: David Stubbs Address: Architect Name: N/A City: Seattle State: WA City: State: 622-0422 Zip: Phone: Fax: Phone: Fax: Contr Reg No.: Email: Exp Date: Tukwila Business License No.: H:\Applications\Forms-Applications On Line \2011 Applications\Permit Application Revised - 8-9-11.docx Revised: August 2011 bh ARCHITECT OF RECORD Name: lA, Company Name: PSM Consulting Company Name: Engineer Name: David Stubbs City: TLIk.( ;\\ 9^- State: Zip: c/b/ �t Architect Name: N/A City: Seattle State: WA Address: Phone: (206) 622-4580 Fax: (206) 622-0422 City: State: Zip: Phone: Fax: Email: ENGINEER OF RECORD Name: lA, Company Name: PSM Consulting Address: u- Engineer Name: David Stubbs City: TLIk.( ;\\ 9^- State: Zip: c/b/ �t Address: 2200 Sixth Ave, Suite 601 City: Seattle State: WA Zip: 98121 Phone: (206) 622-4580 Fax: (206) 622-0422 Email: mdstubbs@psm-engineers.com LENDER/BOND ISSUED (required for projects $5,000 or greater per RCW 19.27.095) Name: lA, ck —i -Li 0 0., Address: u- ' C_ltA. L _ cedekkeA, B`\j d City: TLIk.( ;\\ 9^- State: Zip: c/b/ �t Page 1 of 4 Valuation of Project (contractor's bid price): $ 45,000 Describe the scope of work (please provide detailed information): Existing Building Valuation: $ At this particular location the City is proposing to raise an existing retaining wall and connect to the S 180th St Bridge abutment on the south side of the bridge. The site addresses a freeboard deficiency that was identified in the recent Levee Certification analysis. The existing retaining wall on the south side of the bridge tapers from elevation 35.5' to 31.9' as it tapers under the existing bridge along the pile cap. This gap leaves a vulnerable void in the levee that could potentially flood the nearby parcels in a flood event. The retaining wall work shall be done on the uphill side (west) of the Green River Trail, and there shall be no bank excavation. Will there be new rack storage? ❑ Yes ©.. No If yes, a separate permit and plan submittal will be required. Provide All Building Areas in Square Footage Below PLANNING DIVISION: Single family building footprint (area of the foundation of all structures, plus any decks over 18 inches and overhangs greater than 18 inches) *For an Accessory dwelling, provide the following: Lot Area (sq ft): Floor area of principal dwelling: Floor area of accessory dwelling: *Provide documentation that shows that the principal owner lives in one of the dwellings as his or her primary residence. Number of Parking Stalls Provided: Standard: Compact: Handicap: Will there be a change in use? ❑ Yes No If "yes", explain: FIRE PROTECTION/HAZARDOUS MATERIALS: ❑ Sprinlders 0 Automatic Fire Alarm ll None ❑ Other (specify) Will there be storage or use of flammable, combustible or hazardous materials in the building? ❑ Yes No If "yes', attach list of materials and storage locations on a separate 8-1/2"x 11 " paper including quantities and Material Safety Data Sheets. SEPTIC SYSTEM ❑ On-site Septic System — For on-site septic system, provide 2 copies of a current septic design approved by King County Health Department. H:\Applications\Forms-Applications On Line \2011 Applications\Permit Application Revised - 8-9-11.docx Revised: August 2011 bh Page 2 of 4 Existing Interior Remodel Addition to Existing Structure New Type of Construction per 1BC Type of Occupancy per IBC lst Floor 2nd Floor 3rd Floor Floors thru Basement Accessory Structure* Attached Garage Detached Garage Attached Carport Detached Carport Covered Deck Uncovered Deck PLANNING DIVISION: Single family building footprint (area of the foundation of all structures, plus any decks over 18 inches and overhangs greater than 18 inches) *For an Accessory dwelling, provide the following: Lot Area (sq ft): Floor area of principal dwelling: Floor area of accessory dwelling: *Provide documentation that shows that the principal owner lives in one of the dwellings as his or her primary residence. Number of Parking Stalls Provided: Standard: Compact: Handicap: Will there be a change in use? ❑ Yes No If "yes", explain: FIRE PROTECTION/HAZARDOUS MATERIALS: ❑ Sprinlders 0 Automatic Fire Alarm ll None ❑ Other (specify) Will there be storage or use of flammable, combustible or hazardous materials in the building? ❑ Yes No If "yes', attach list of materials and storage locations on a separate 8-1/2"x 11 " paper including quantities and Material Safety Data Sheets. SEPTIC SYSTEM ❑ On-site Septic System — For on-site septic system, provide 2 copies of a current septic design approved by King County Health Department. H:\Applications\Forms-Applications On Line \2011 Applications\Permit Application Revised - 8-9-11.docx Revised: August 2011 bh Page 2 of 4 PUBLIC WORKS PERMIT INFOIATION — 206-433-0179 Scope of Work (please provide detailed information): At this particular location the City is proposing to raise an existing retaining wall and connect to the S 180th St Bridge abutment on the south side of the bridge. The site addresses a freeboard deficiency that was identified in the recent Levee Certification analysis. The existing retaining wall on the south side of the bridge tapers from elevation 35.5' to 31.9' as it tapers under the existing bridge along the pile cap. This gap leaves a vulnerable void in the levee that could potentially flood the nearby parcels in a flood event. Call before you Dig: 811 Please refer to Public Works Bulletin #1 for fees and estimate sheet. Water District ❑ ...Tukwila ❑ ...Water District #125 0 ...Water Availability Provided Sewer District ❑ ...Tukwila 0 ...Sewer Use Certificate 0 .. Highline ❑ ... Valley View 0 .. Renton ❑ ... Sewer Availability Provided 0 .. Renton 0 .. Seattle Septic System: ❑ On-site Septic System — For on-site septic system, provide 2 copies of a current septic design approved by King County Health Department. Submitted with Application (mark boxes which apply): 0 ...Civil Plans (Maximum Paper Size — 22" x 34") ❑ ...Technical Information Report (Storm Drainage) 0 .. Geotechnical Report 0 ...Traffic Impact Analysis ❑ ...Bond 0 .. Insurance ❑ .. Easement(s) ❑ .. Maintenance Agreement(s) 0 ...Hold Harmless — (SAO) ❑ ...Hold Harmless — (ROW) Proposed Activities (mark boxes that apply): ❑ ...Right-of-way Use - Nonprofit for less than 72 hours ❑ .. Right-of-way Use - Profit for less than 72 hours 0 ...Right-of-way Use - No Disturbance © .. Right-of-way Use — Potential Disturbance ® ...Construction/Excavation/Fill - Right-of-way WI Non Right-of-way 0 ® ...Total Cut 33 cubic yards ® .. Work in Flood Zone ® ...Total Fill 30 cubic yards ® .. Storm Drainage ❑ ...Sanitary Side Sewer ❑ ...Cap or Remove Utilities 0 ...Frontage Improvements ® ...Traffic Control 0 ...Backflow Prevention - Fire Protection Irrigation ❑ .. Abandon Septic Tank ❑ .. Curb Cut ❑ .. Pavement Cut ❑ .. Looped Fire Line Domestic Water 11. ❑ .. Grease Interceptor ❑ .. Channelization ❑ .. Trench Excavation ❑ .. Utility Undergrounding ❑ ...Permanent Water Meter Size... WO # ❑ ...Temporary Water Meter Size .. I, WO # 0 ...Water Only Meter Size WO # 0 ...Deduct Water Meter Size O ...Sewer Main Extension Public 0 Private 0 ❑ ...Water Main Extension Public ❑ Private ❑ FINANCE INFORMATION Fire Line Size at Property Line Number of Public Fire Hydrant(s) 0 ...Water ❑ ...Sewer 0 ...Sewage Treatment Monthly Service Billing to: Name: Day Telephone: Mailing Address: Water Meter Refund/Billing: Name: Mailing Address: City State Zip Day Telephone: City State Zip H:\Applications\Forms-Applications On Line \2011 Applications\Permit Application Revised - 8-9-11.docx Revised: August 2011 bh Page 3 of 4 PERMIT APPLICATION NOTES - Value of Construction - In all cases, a value of construction amount should be entered by the applicant. This figure will be reviewed and is subject to possible revision by the Permit Center to comply with current fee schedules. Expiration of Plan Review - Applications for which no permit is issued within 180 days following the date of application shall expire by limitation. The Building Official may grant one or more extensions of time for additional periods not exceeding 90 days each. The extension shall be requested in writing and justifiable cause demonstrated. Section 105.3.2 International Building Code (current edition). I HEREBY CERTIFY THAT I HAVE READ AND EXAMINED THIS APPLICATION AND KNOW THE SAME TO BE TRUE UNDER PENALTY OF PERJURY BY THE LAWS OF THE STATE OF WASHINGTON, ANDBI AM AUTHORIZED TO APPLY FOR THIS PERMIT. BUILDING OWNS OR UTHORI D A ENT: p GV1Q,'\K' ac" CAL( 6C-� �� 6-2Apitl L o.. S'' . Signature: Date: 131 Day Telephone: 3(2 6 1 -JCS 1 6 11- 3( 3 ( Ca d i b E'er. swk H00 C ' - vvlk Print Name: Mailing Address: City State H:\Applications\Forms-Applications On Line \2011 Applications\Fermit Application Revised - 8-9-11.docx Revised: August 2011 bh Zip Page 4 of 4 Cash Register Receipt City of Tukwila DESCRIPTIONS PermitTRAK ACCOUNT QUANTITY PAID $1,596.84 D18-0212 Address: 6847 S 180TH ST Apn: 3623049079 $1,596.84 DEVELOPMENT $1,550.61 PERMIT FEE R000.322.100.00.00 0.00 $924.61 PLAN CHECK FEE R000.345.830.00.00 0.00 $601.00 WASHINGTON STATE SURCHARGE B640.237.114 0.00 $25.00 TECHNOLOGY FEE $46.23 TECHNOLOGY FEE TOTAL FEES PAID BY RECEIPT: R14979 R000.322.900.04.00 0.00 $46.23 $1,596.84 Date Paid: Wednesday, July 18, 2018 Paid By: CITY OF TUKWILA Pay Method: CITY ACCOUNT 91841201.1000.107 4 Printed: Wednesday, July 18, 2018 3:32 PM 1 of 1 SYSTEMS INSPEC INSPECTION RECORD Retain a copy with permit Dig-azi z TION NO. CITY OF TUKWILA BUILDING DIVISION 0-c4 6300 Southcenter Blvd., #100, Tukwila. WA 98188 (206) 431-3670 Permit Inspection Request Line (206) 438-9350 PERMIT NO. Project: C i of T. 4 LSI Type of Inspection: su, l d t" F�ise..._ Add ess: -1I4 f 7 S. 1.80 5+ Date Called: DateWanted: �` p Speciallnstructions: nir5 Ua,`I 5-----;..„ �`OI�G Requester: Phone No: NOApproved per applicable codes. Corrections required prior to approval. COMMENTS: 14/ 4v -r€ Inspector: is CI__ Date:/ -0_2.015 REINSPECTION FEE REQUIRED. Prior to next inspection. fee must: be paid at 6300 Southcenter Blvd.. Suite 100. Call to schedule reinspection. INSPECTION RECORD Retain a copy with permit INSPECTION NO. PERMIT NO. CITY OF TUKWILA BUILDING DIVISION 6300 Southcenter Blvd., #100, Tukwila. WA 98188 (206) 431-3670 Permit Inspection Request Line (206) 438-9350 )i6 az/ Project:.Type art -, 4v4 4 of Inspection: 3v/ v ,�� Addres : /19196. igafif b7" Dae Called: Special Instructions: A* --4^4 #�Q(sli Date Wanted: / —/-711 am. p.m. Requester: Phone No: ❑ Approved per applicable codes. Corrections required prior to approval. COMMENTS: varG 44 -7 a/4 J r)bo Ft puri --)C., t cSp€tit,/ C/ f} 04fte_. fie-cei4.0 Inspecta g eo Date:/— /7-30/7 REINSPECTION FEE REQUIRED. Prior to next inspection, fee must be paid at 6300 Southcenter Blvd., Suite 100. Call to schedule reinspection. INSPECTION RECORD Retain a copy with permit INSPECTION NO. PERMIT NO. CITY OF TUKWILA BUILDING DIVISION 6300 Southcenter Blvd., #100, Tukwila. WA 98188 (206) 431-3670 Permit Inspection Request Line (206) 438-9350 D 1 g -0217 Pr ect:9relf,+—�, T�je of Inspection: N1jn Wp,4LL Atres 8g73, 480 Date Called: r Special Instructions: Date Wanted: a.m. /0— 9 - Zo1r p.m. Requester: ,_ Ce -.C(".''11 27A/C Phone No: prj Approved per applicable codes. 0 Corrections required prior to approval. /COMMENTS: fp- ?�G LA)(a-(_-(-) tolg ir inspector: 0,0 Date j0 REINSPECTION FEE REQUIRED. Prior to next inspection, fee must be paid at 6300 Southcenter Blvd.. Suite 100. Call to schedule reinspection. s\Contract\18081C0V.dwg 7/12/2018 6:18 PM N: \PROJECTS\TUKWILA\18081-2018 Sm Drainage\DESIGN\Dr "1,a d d i o' . Mccnanical /l.;ct ical numbing tal OZ.'S Piping City of Tu wila BUILD'7\!2, r VI 'ION 2018 SMALL DRAINAGE PROGRAM MAYOR ALLAN EKBERG PROJECT NO. 91841201 DIRECTOR OF PUBLIC WORKS HENRY HASH CITY ENGINEER HARI PONNEKANTI, P.E. SCHEDULE OF DRAWINGS SHEET NO. SHEET TITLE 1 COVER 2 LEGEND AND ABBREVIATIONS CITY COUNCIL VERNA SEAL, PRESIDENT KATHY HOUGARDY THOMAS McLEOD DENNIS ROBERTSON ZAK IDAN KATE KRULLER FILE COPY DE'SEAN QUINN Permit No. b1 Dom' Plan review approvcl is subject to errors and omissions. Approval of construction documents does not authorize the violation of any adopted code or ordinance. Receipt of approved Field Copy and conditions is "knowicdged: By: Date: 3 DETAILS 4 GIWAM CREEK OUTFALL ACCESS IMPROVEMENTS 5-12 GIWAM CREEK OUTFALL ACCESS IMPROVEMENTS 13 S 180TH ST BRIDGE GENERAL NOTES 14-16 S 18011-1 ST BRIDGE RETAINING WALL 17-18 INTERURBAN AVE CATCH BASIN RETROFITS 19 LEVEE 205 DRAINAGE REPAIR 20 TUKWILA INTERNATIONAL BVD PIPE ABANDO MENT 7, Lf, IA STRUCTURAL GEN O of Tukwila BUILDING DIVISION a 5Mfr 5 rs Di Mo" M IX 9 1 GOY 5111 F TUKWILA INTERNATIONAL BLVD PIPE ABANDONMENT REVIEWED FOR CODE COMPLIANCE APPROVED SEP182018 City of Tukwila BUILDING DIVISION e,. r a S A 5000 PM< ea a CONSTRUCTION PERMIT SUBMITTAL 7-13-18 REVISIONS No changes shall bo made to the scope of work With•:y_st prior approval of Tukwila Budding Division NOTE: RSV ;Ons will require a n^r! plan submittal and may in;,'ude act . ionai plan fees I CALL 2 DAYS BEFORE YOU DIG 811 PUBLIC WORKS DPT_ * ENGINEERING *STREETS *WATER* SEWER *BUILDING * designed drawn checked prof eng prof dir field bk no by BMC BMC KRS date 05/18 05/18 05/18 Interdisciplinary Design 3131E0 tAae 2502Maras Ave Us 400 Tacoma, WA 98402 Saila, WA 96121 (253)627-0720 pop 286-1640 rrowlygmm BID DOCUMENTS EC D INTERURBAN AVE CATCH BASIN RETROFITS OF U ILA JUL 1 3 2018 / PERMIT CENTER GILLIAM CREEK OUTFALL ACCESS IMPROVEMENTS LEVEE 205 DRAINAGE REPAIR CATCH BASIN RETROFIT S 180TH ST BRIDGE RETAINING WALL CATCH BASIN RETROFIT /WV,2018 SMALL DRA N E PROGRAM COVER 1 C20 file 00 18081C0V.DWG scale l'= ao.oa no date revisions date 01/18 on\Drowmg Files\CAD\17035_13.dwg 7/13/2018 8:37 01.4 THE FOLLOWING NOTES APPLY EXCEPT WHERE SHOWN OTHERWISE CODE INTERNATIONAL BUILDING CODE IBC (2015) STRUCTURAL LOADS SOIL LOADS: ACTIVE SOIL PRESSURE = 55 PCF SHOP DRAWINGS SHOP DRAWINGS SHALL BE SUBMITTED FOR REVIEW PRIOR TO FABRICATION. SHOP DRAWING SUBMITTALS PROCESSED BY THE ENGINEER ARE NOT CHANCE ORDERS. THE PURPOSE OF SHOP DRAWING SUBMITTALS BY THE CONTRACTOR IS TO DEMONSTRATE TO THE ENGINEER THAT THE CONTRACTOR UNDERSTANDS THE DESIGN CONCEPT, BY INDICATING WHICH MATERIAL IS INTENDED TO BE FURNISHED AND INSTALLED, AND BY DETAILING THE INTENDED FABRICATION AND INSTALLATION METHODS. IF DEVIATIONS, DISCREPANCIES, OR CONFLICTS BETWEEN SHOP DRAWING SUBMITTALS AND THE CONTRACT DOCUMENTS ARE DISCOVERED EITHER PRIOR TO OR AFTER SHOP DRAWING SUBMITTALS ARE PROCESSED BY THE ENGINEER, THE DESIGN DRAWINGS AND SPECIFICATIONS SHALL CONTROL AND SHALL BE FOLLOWED. FOUNDATIONS MAXIMUM SOIL PRESSURE 2000 PSF PER W.C. KOSKINEN 1984 STRUCTURAL DRAWINGS. EXTERIOR FOOTINGS SHALL BEAR 1'— 6" (MINIMUM) BELOW FINISH GRADE. ALL FOOTINGS TO BEAR ON FIRM UNDISTURBED EARTH BELOW ORGANIC, SURFACE SOILS AND SHALL BE LOWERED IF SUITABLE SOIL IS NOT FOUND AT ELEVATIONS SHOWN ON DRAWINGS. COMPACTION SHALL ACHIEVE 95% OF MAXIMUM DENSITY DETERMINED UNDER TESTS PER WSDOT STD SPEC. 2-03.3(14)0. BACKFILL, GRAVEL BACKFILL FOR WALLS PER WSDOT STD. SPEC 9-03.12(2). CONCRETEMAX WATER/CEMENT RATIO MINIMUM F'C NON—AIR—ENT AIR—ENT SACKS/C.Y. REMARKS FOOTINGS AND FOUNDATION WALLS 4000 0.44 0.35 6-1/2 1. AIR—ENTRAINING AGENT (3% TO 6%) TO BE USED IN ALL CONCRETE FLATWORK EXPOSED TO WEATHER. REINFORCING STEEL ASTM A615 GRADE 60. REINFORCING STEEL DETAILS SHALL BE PREPARED BY AN EXPERIENCED RETAILER AND CONFORM TO STANDARD PRACTICE OUTLINED IN ACI REPORT 315. FIELD WELDING OR TACK WELDING OF REINFORCING BARS IS PROHIBITED, EXCEPT AS APPROVED 8Y THE ENGINEER. ANY REINFORCING TO BE WELDED TO BE ASTM A706, WELDABLE GRADE. WHEN APPROVED, WELDING OF REINFORCING BARS TO BE PER AWS D1.4. MECHANICAL SPUCE DEVICES, IF REOUIRED, SHALL BE ICC APPROVED AND SHALL BE SUBMITTED TO THE ENGINEER FOR APPROVAL. REINFORCING BARS SHALL BE LAP SPLICED FOR TENSION UNLESS NOTED OTHERWISE ON THE DRAWINGS. j14 AND LARGER BARS SHALL NOT BE LAP SPLICED. LAP FOUNDATION REINFORCING 32 DIAMETERS. OTHER LAP LENGTHS PER DRAWINGS. WELDED WIRE FABRIC TO BE ASTM A185. FABRIC TO BE SUPPORTED ON APPROVED CHAIRS. NOTE:REINFORCING STEEL NOT SPECIFICALLY SHOWN SHALL BE ASSUMED TYPICAL AS SIMILAR SECTIONS AND DETAILS WHERE REINFORCING IS SHOWN. CONCRETE COVER OF REINFORCING 3" CONCRETE POURED ACANST EARTH. 2" FORMED CONCRETE WITH EARTH BACKFILL. 1-1/2" BEAMS AND COLUMNS (STIRRUPS, TIES), OUTSIDE FACE OF WALLS EXPOSED TO WEATHER, SLABS ON MOISTURE BARRIER. 1" WALLS, INSIDE FACE. 3/4" FORMED SLABS. ANCHORAGE TO HARDENED CONCRETE WHERE EXPANSION ANCHORS ARE SPECIFIED, USE "HILTI KWIK BOLT TZ" (REFERENCE ICC REPORT ESR -1917.) WHERE EPDXY ANCHORS ARE SPECIFIED, USE "HILTI HIT—HY 200" OR `SIMPSON SET—XP'(REFERENCE ICC REPORT ESR -3187 AND ESR -2508). WHERE SCREWS ANCHORS A RE SPECIFIED , USE "SIMPSON TITEN HD" (REFERENCE ICC REPORT ESR -2713). "HILTI HIT—RE 500", "HILTI HY-200", AND "SIMPSON SET" MAY NOT BE USED, UNLESS SPECIFICALLY PRE—APPROVED BY THE STRUCTURAL ENGINEER. USE ASTM A193 GRADE 87 THREADED ROD, UNLESS OTHERWISE NOTED. HOLES MUST BE CLEANED OF OUST AND DEBRIS AND BE FREE OF STANDING WATER WHEN EPDXY IS INSTALLED. SPECIAL INSPECTION OF EPDXY ANCHORS IS REOUIRED. DO NOT CUT ANY REINFORCING BARS TO INSTALL ANCHORS. DEFECTIVE HOLES SHALL BE FILLED SOLID WITH EPDXY. FOR ANY SUBSTITUTIONS TO THE ABOVE, THE CONTRACTOR SHALL SUBMIT TO THE STRUCTURAL ENGINEER MANUFACTURERS LITERATURE DESCRIBING THE ANCHORS AND USTING ICC APPROVED ALLOWABLE SHEAR AND TENSION VALUES. SCOPE OF STRUCTURAL ENGINEERING SERVICES THE STRUCTURAL ENGINEER HAS PERFORMED THE STRUCTURAL DESIGN AND PREPARED THE STRUCTURAL WORKING DRAWINGS FOR THIS PROJECT. THE CONSTRUCTION MUST BE PERFORMED IN STRICT ACCORDANCE WITH THE STRUCTURAL DRAWINGS. ANY DEVIATION FROM THE DRAWINGS MUST BE APPROVED IN WRITING BY THE STRUCTURAL ENGINEER. ERRORS AND/OR OMISSIONS FOUND ON THE STRUCTURAL DRAWINGS MUST BE BROUGHT TO THE STRUCTURAL ENGINEER'S ATTENTION IMMEDIATELY. CML DRAWINGS ARE THE PRIME CONTRACT DRAWINGS. STRUCTURAL DRAWINGS SHALL BE USED IN CONJUNCTION WITH CML DRAWINGS. PRIMARY STRUCTURAL ELEMENTS ARE DIMENSIONED ON THE STRUCTURAL PLANS AND DETAILS. THE GENERAL CONTRACTOR SHALL VERIFY AND COORDINATE DIMENSIONS AMONG ALL DRAWINGS. ANY DISCREPANCIES. CONTRADICTIONS, OR OMISSIONS SHALL BE REPORTED TO CML FOR RESOLUTION PRIOR TO PROCEEDING WITH WORK OR FABRICATION OF THE ITEM(S) IN QUESTION. THE STRUCTURAL ENGINEER IS RESPONSIBLE FOR THE DESIGN OF THE PRIMARY STRUCTURAL SYSTEM, EXCEPT FOR ANY COMPONENTS NOTED ABOVE. RESPONSIBILITY FOR ANY SECONDARY STRUCTURAL AND NON—STRUCTURAL SYSTEMS NOT SHOWN ON THE STRUCTURAL PLANS RESTS WITH SOMEONE OTHER THAN THE STRUCTURAL ENGINEER. THE STRUCTURE SHOWN ON THESE DRAWINGS IS STRUCTURALLY SOUND ONLY IN ITS COMPLETED FORM. THE CONTRACTOR SHALL PROVIDE ALL NECESSARY BRACING TO STABIUZE THE BUILDING DURING CONSTRUCTION. THE STRUCTURAL ENGINEER IS NOT RESPONSIBLE FOR, AND WILL NOT HAVE CONTROL OF, CONSTRUCTION MEANS, METHODS, TECHNIQUES, SEQUENCES OR PROCEDURES, OR FOR SAFETY PRECAUTIONS AND PROGRAMS IN CONNECTION WITH THE CONSTRUCTION WORK, NOR WILL HE BE RESPONSIBLE FOR THE CONTRACTOR'S FAILURE TO CARRY OUT THE CONSTRUCTION WORK IN ACCORDANCE WITH THE CONTRACT DOCUMENTS. FIELD MEASUREMENTS AND THE VERIFICATION OF FIELD DIMENSIONS ARE NOT PART OF THE STRUCTURAL ENGINEER'S RESPONSIBIUTY. THE CONTRACTOR MUST CHECK AU. (ASSUMED) EXISTING CONDITIONS SHOWN ON THESE DRAWINGS FOR ACCURACY AND NOTIFY THE STRUCTURAL ENGINEER OF ANY DISCREPANCIES. OMISSIONS FROM THE DRAWINGS OR SPECIFICATIONS OR THE INADVERTENT MISLABELING OF DETAILS OF WORK WHICH ARE MANIFESTLY NECESSARY TO CARRY OUT THE INTENT OF THE DRAWINGS AND SPECIFICATIONS, OR WHICH ARE CUSTOMARILY PERFORMED, SHALL NOT RELIEVE THE CONTRACTOR FROM PERFORMING SUCH OMITTED OR INADVERTENT MISLABELED DETAILS OF THE WORK BUT THEY SHALL BE PERFORMED AS IF FULLY AND CORRECTLY SET FORTH AND DESCRIBED IN THE DRAWINGS AND SPECIFICATIONS. SPECIAL INSPECTIONS — CONCRETE CONSTRUCTION ELEMENT: REINFORCING STEEL PERIOD: PERIODIC INSPECTION PRIOR TO POURING OF CONCRETE. SPECIAL INSPECTOR TO VERIFY REINFORCING SIZE AND LOCATION. ELEMENT: BOLTS IN CONCRETE, INCLUDING EMBEDDED BOLTS, AND EXPANSION AND EPDXY TYPE ANCHORS. PERIOD: CONTINUOUS SPECIAL INSPECTION: SPECIAL INSPECTOR VERIFY SIZE, GRADE, AND EMBEDMENT OF BOLT PRIOR TO POURING CONCRETE. VERIFY HOLE IS CORRECT DEPTH AND CLEAN FOR EPDXY AND EXPANSION TYPE ANCHORS. ELEMENT: AT THE TIME FRESH CONCRETE IS SAMPLED TO FABRICATE SPECIMENS FOR STRENGTH TESTS, PERFORM SLUMP, AIR CONTENT, AND DETERMINING TEMPERATURE OF FRESH CONCRETE. PERIOD: CONTINUOUS SPECIAL INSPECTION. ELEMENT: WELDING OF REINFORCING STEEL PERIOD: CONTINUOUS SPECIAL INSPECTION. ELEMENT: INSPECTION OF CONCRETE AND SHOTCRETE PLACEMENT FOR PROPER APPUCATION TECHNIQUES. PERIOD: CONTINUOUS SPECIAL INSPECTION. ELEMENT: INSPECTION FOR MAINTENANCE OF SPECIFIED CURING TEMPERATURE AND TECHNIQUE. PERIOD: PERIODIC SPECIAL INSPECTION ELEMENT: SLABS ON GRADE PERIOD: SPECIAL INSPECTION NOT REOUIRED. REVIEWED FOR CODE COMPLIANCE APPROVED SEP 18 2018 City of Tukwila BUILDING DIVISION PROJECT LOCATION EIVED TUKWILA 1 3 2018 PERMIT CENTER PUBLIC' WORKS 7-- * * ENGINEERING *STREETS *WATER*SEWER *BUILDING * designed drawn checked proj eng prof dir field bk no by PSM PSM MDS date 04/18 04/18 04/18 PSM PSM CONSULTING ENGINEERS, INC. 2200 SIXM AVENUE. sumo eo, S: 02.0 WA 6812; 200.022AS. , 200.622.0422 BID DOCUMENTS 2018 SMALL DRAINAGE PROGRAM S 180TH STREET BRIDGE RETAINING WALL GENERAL NOTES, SPECIAL INSPECTIONS 13 ' 20J file no 17035_13.DWG scale 1"=41' no date revisions date ....:. / ng Files\CAD\17035_14.dwg 7/11/2018 3:36 PIA 3 i 1 1— o PIC` tS W� / MATERIAL TO EXISTING CONCRET CAP 1 --� EXIST1180TH ST BRIDGE _I J—gr - �►�__ _ 1" THICK COMPRESSIBLE WATERTI a HT- ALIGN T ALIGN EDGE OF RETAINING WALL W/ WEST EDGE OF c EXIST PILE CAP WALL NEW FOOTING NEW RETAINING WALL EXTENSION NEW RETAINING WALL EXIST 180TH ST BRIDGE #4 X 2'-3" DOWELS AT 12"OC TOP & BOT DRILL INTO EXIST & SET W/ EPDXY (33/2" EMBED) 1 11 FOUNDATION PLAN (vERIFy) EXIST RETAINING WALL SCALE: I/2' - 1'-0' ELEVATION SCALE: NTS n EXIST PILE CAP WALL NEW 12" RETAINING WALL PER PLAN EXIST RETAINING WALL HEEL RE -BUILD FENCE NEW FENCE TO MATCH EXIST FENCE POST INSERT PER MFR AT WALL CL EXIST RETAINING WALL 35.5' I;I �I 1 III is 1 NEW RETAINING WALL EXTENSION 1 26.7' (2) #4 CONT. BARS -' EXIST PILE CAP WALL EXIST BRIDGE 1— //// ////// ///�/I/earl #4 AT 16'OC 71Vall= EA.WAY EA. FACE // (3) #5 HORIZ EXIST PATH FIELD MEASURE (VFY) ELEVATION 1" COMPRESSIBLE WATERTIGHT MATERIAL (2) #5 EXIST PILE CAP EXIST 4'-0" PILE CAP f 33.6' f- 31.9' (VFY) 2" THICK COMPRESSIBLE WATERTIGHT MATERIAL AT HORIZONTAL JOINT SCALE: I/2' 1'-0' RECEIVED CITY OF TUKWILA JUL 1 3 2018 PERMIT CENTER REVIEWED FOR CODE COMPLIANCE APPROVED SEP 1 8 L[118 City of Tukwila BUILDING DIVISION PZJBLIC' WORKS 1E'1'T_ * ENGINEERING *STREETS *WATER* SEWER *BUILDING * designed drawn checked prof eng prof dir field bk no by PSM PSM MDS date 04/18 04/18 04/18 PSM PSM CONSULTING ENGINEERS. INC. 2200 SIXTH AVENUE. SUITE 601 SEATTLE. WA 69121 200.022.1590 E: 206.022.0122 ..,...06N-o110166o1S.00.H BID DOCUMENTS 2018 SMALL DRAINAGE PROGRAM S 180TH STREET BRIDGE RETAINING WALL FOUNDATION PLAN & ELEVATIONS r 14 L 20 file no 17035_14.DWG scale 1"=41' no date revisions date #/!a8 / Files\CAD\17035_15,dwg 7/13/2018 8:37 AO L:\Jobs\2017\17035 — S. 180th Br *44 33.6' --!� EXIST PILE CAP--\ _/ EXPANSION JOINT MATERIAL EXIST TRTD TIMBER PILE 0 FILL ANY VOIDS W/ LEAN CONC UNDER PRESSURE SECTION #5 Al" 12"OC EA.FACE #4 AT 16"OC EA.FACE iY2" CLR • TYP WALL INFILL PER A/14 i —I i GRAVEL BACKFILL FOR WALLS #5 AT 12"OC 2X6 KEY #5 AT 12"OC J 1'-D" a GC ALIGN TOP OF FTG W/ TOP OF EXIST RETAINING WALL HEEL #4 AT 12"OC TRANSVERSE PER PLAN 35.5' ti 32.2' 32.2' MAX FILL MAX FILL ELEV ELEV } FIELD DETERMINE N 1-0" EXIST — WALL FTG BEYOND SCALE: 3/4' • I' -0 - EXIST WALL #4 AT 16"OC DRILL INTO EXIST & SET W/ EPDXY (4" EMBED) 1Y2" CLR TYP EXIST WALL CONNECTION PLAN VIEW DETAL EXIST RETAINING WALL EXTENSION PER B/S3 NEW LETAINING #4 PER A/ 3 �.� AT1EA.FACEORIZ 6"OC�° WALL NEW WALL CORNER PLAN VIEW SCALE: 3/4' = I'-0' O w w� >n co 2Y2" CLR TYP #4 AT 16"0C EA.FACE • DRILL INTO EXIST & SET W/ EPDXY (4" EMBED) GRAVEL BACKFILL FOR WALLS 3'-3" (VERIFY) #4 AT 16"OC EA.FACE ROUGHEN SURFACE TO Y" AMPLITUDE EXIST PATH 0 J LL w z cc w 1- w 0 ti ± 26.7' O SECTION O SCALE 3/4' I' 0' REVIEWED FOR CODE COMPLIANCE APPROVED SEP 18 2018 City of Tukwila BUILDING DIVISION RECEIVED CITY OF TUKWILA JUL 1 3 2018 PERMIT CENTER PUBLIC WORKS DEP T_ * ENGINEERING *STREETS *WATER* SE WER *BUILDING * designed drawn checked proj ene prof dir field bk no by PSM PSM MDS date 04/18 04/18 04118 PSM PSM CONSULTING ENGINEERS, INC. ,1200 SIXTH AVENUE. SUITE 001 SEATTLE WA 90121 200.021.4580 F: 206.022.0422 BID DOCUMENTS 2018 SMALL DRAINAGE PROGRAM S 180TH STREET BRIDGE RETAINING WALL SECTIONS & DETAILS 15 20 file no 17035_15.DWG scale r=41' no date revisions date 8080 / gs\Contract\16001BPPRBRIDCE.dwg 7/13/2018 8:47 AM 6 E 0 0 Cl APPROX GRADING UMITS 1 EXISTING PLANTER CURB & GUTTER APPROX GRADING UMITS 526 PK INSTALL NEW FENCE ON TOP OF WALL TO MATCH DOSING nR16' PROTECT TREE. SEE TREE PROTECTION DETAIL THIS SHEET. PROTECT TREE. SEE TREE PROTECTION DETAIL, THIS SHEET. DT12' PLAN 0 2.5 5 10 SCALE IN FEET 15 45 ao_...._ DOSING 6 w 30 25 20..___.__x....._..---........_....L-OWEST-MO[1NG EL.24.5 15 EXIST & PROPOSED - SURFACE -f a-- -321-- 40 35 25 20 SECTION A -A HOR: 1"=10' VER: 1'=10` 45 35 30 25 EXCAVATE 1:1 MAX TO BOTTOM OF PROPOSED FOOTING ELEV. SHORE AND•EXCAVAIE AS REQUIRED 20 AROUND-DOS11NG-TREfS-TO- PREVENT 1Rff•DAMAGE REVIEWED FOR CODE COM ANCE APPROVED PROPOSED EXIST & PROPOSED SURFACE.... El -.3Z2-- EXCAVATE 1:1. • MAX .T0 BOTTOM. -OF _...._..__...._. PROPOSED FOOTING ELEV TOWARDS EXISTING CURB TREE PROTECTION NOTES 1. SIX FOOT HIGH HIGH-VISIBIUTY FENCE SHALL BE PLACED AT TREE TO BE SAVED AS INDICATED IN TREE PROTECTION RADIUS TABLE FENCE SHALL COMPLETELY ENCIRCLE TREE(S). INSTALL FENCE POSTS USING PIER BLOCKS ONLY. AVOID DRIVING POSTS OR STAKES INTO MAJOR ROOTS. 2. TREE PROTECTION FENCING SHALL BE CONSOUDATED AROUND SIGNIFICANT GROUPINGS OF EXISTING TREES TO REMAIN WHERE POSSIBLE; ENGINEER TO APPROVE TREE PROTECTION FENCING LAYOUT PRIOR TO START OF CONSTRUCTION ACTIVITIES. 3. TREATMENT OF ROOTS EXPOSED DURING CONSTRUCTION IN OUT OUTSIDE TREE PROTECTION FENCING: FOR ROOTS OVER 1" IN DIAMETER DAMAGED DURING CONSTRUCTION; MAKE A CLEAN, STRAIGHT CUT TO REMOVE DAMAGED PORTION OF ROOT. All EXPOSED ROOTS SHALL BE COVERED WITH DAMP BURLAP TO PREVENT DRYING. THE MATERIAL MUST BE KEPT MOIST UNTIL BACKFILLED. 4. WORK WHERE ROOTS OVER 1.5" IN DIAMETER ARE PRESENT, IF REQUIRED, SHALL BE DONE MANUALLY BY HAND OR APPROVED AIR SPADE SECTION B -B HOR: 1"=10' VER: 1"=10' tOWEST• FOOTING EL 24.5 5. NO STOCKPILE OF MATERIALS, VEHICULAR TRAFFIC, OR STORAGE OF EQUIPMENT OR MACHINERY SHALL BE ALLOWED WITHIN THE UMITS OF THE PROTECTION FENCING. 6. PORTIONS OF THE CHAIN LINK FENCE MAY BE MOVED 1/3 INTO THE TREE PROTECTION FENCING AREA IF UNABLE TO PROTECT ENTIRE DRIPUNE AREA. THIS IS ONLY PERMITTED FOR PORTIONS OF THE TREE PROTECTION FENCING AREA THAT ARE IN CONFLICT WITH CONSTRUCTION ACTIVITIES BASED UPON ENGINEER'S APPROVAL 7. MAINTAIN FENCING IN PLACE UNTIL THE CITY AUTHORIZES REMOVAL OR A FINAL APPROVAL IS ISSUED. 8. SIGNS SHALL BE ATTACHED TO THE TREE PROTECTION FENCING STATING THAT THE TREE IS DESIGNATED FOR PROTECTION AND THE AREA INSIDE OF THE FENCE IS NOT TO BE DISTURBED UNLESS PRIOR APPROVAL HAS BEEN OBTAINED FROM THE ENGINEER. 'SEP? 82318 EL.35.5 _ 1ty of Tukwila BUILDING DIVISION EXIST PATH 30 RECEIVED -CV OF TUKWILA JUL 1 3 2018 PERMIT CENTER VARIES; SEE TABLE THIS SHEET \I\ SITE SPECIFIC GENERAL NOTES 1. GREEN RIVER TRAIL MAY BE CLOSED DURING WORKING HOURS WITH DETOUR AND SIGNAGE AS SHOWN AND APPROVED IN CONTRACTOR'S TRAFFIC CONTROL PLAN. 2. GREEN RIVER TRAIL SHALL REMAIN OPEN FOR USE AND FREE OF DEBRIS DURING NON -WORKING HOURS. 3. CONTRACTOR SHALL MAINTAIN ACCESS TO BUSINESS. 4. WALL TO BE BACKFILLED WITH IMPORTED GRAVEL BACKFILL FOR WALLS PER WSDOT STD SPEC 9-03.12(2). 5. RESTORE ALL DISTURBED AREAS WITH IMPORTED TOPSOIL (4" MIN DEPTH). SITE SPECIFIC SURVEY NOTES 1. THE LOCATIONS OF EXISTING UNDERGROUND UTILITY SYSTEMS, AS SHOWN HEREON ARE TAKEN FROM UTILITY LOCATE PAINT MARKS OR AS -BUILT PLANS AND ARE SHOWN IN AN APPROXIMATE WAY ONLY. THE CONTRACTOR SHALL DETERMINE THE EXACT LOCATION OF ALL EXISTING UTILITIES BEFORE COMMENCING WORK, AND AGREES TO BE FULLY RESPONSIBLE FOR ANY AND ALL DAMAGES WHICH MIGHT BE OCCASIONED BY THE CONTRACTOR'S FAILURE TO EXACTLY LOCATE AND PRESERVE ANY AND ALL UNDERGROUND UTILITIES ALL LOCATOR SERVICES SHOULD BE CONTACTED PRIOR TO ANY CONSTRUCTION OR SUBSURFACE EXPLORATION. 2. FIELD SURVEY: KPG, MARCH, 2017. 3. CONTOUR INTERVAL = 1 FOOT. 4. NO UTILITY LOCATES TO FEATURE AT 11ME OF SURVEY. 5. HORIZONTAL DATUM: WASHINGTON STATE PLANE COORDINATE SYSTEM, NORTH ZONE, NAD 83/91. 6. VERTICAL DATUM: NAVD 88. CONTROL POINT LIST PT # DESCRIPTION NORTHING EASTING ELEVATION 120 HUB PK 164094.40 1290725.96 32.60' 526 PK 164104.98 1290741.26 26.84' TREE PROTECTION FENCING RADIUS TREE AGE MIN. DISTANCE FROM TRUNK YOUNG (20% OF UFE EXPECT.) 0.75' PER 1" OF TRUNK DIA. MATURE (20-80% OF UFE EXPECT.) 1.00' PER 1" OF TRUNK DIA. OVER MATURE (>80% OF LIFE EXPECT.) 1.50' PER 1" OF TRUNK DIA. 1'-0" MAX TO OMIT OF GRADING 1�1p fic 4 (11 8 u 0 } F TREE PROTECTION DETAIL NTS PUBLIC WORKS 1;11E11:1-1-- . EPT* ENGINEERING *STREETS *WATER* SEWER*BUILDING * designed drawn checked by KDA KDA NJD odat /17 04/17 04/17 Droi eng Droi dir field bk no Interdisciplinary Design 3131 Eke Ave 2502 Jefersn Ave Sale 400 Seattle, WA 98121 )206)286-1640 Tacoma, WA 98402 (253)6274720 rmwipg.mm BID DOCUMENTS 2018 SMALL DRAINAGE PROGRAM S 180TH ST BRIDGE RETAINING WALL SITE PLAN v J i• 16 ` 20 file no 16:018PPR_BEDGE0,ve scale 1'=20' 110 date revisions date 07/18 s r3La Structural Calculations for S.l8Oth Bridge Retaining Wall Extensions Tukwila, WA REVIEWED FOR CODE COMPLIANCE APPROVED SEP 18 2018 City of Tukwila BUILDING DIVISION April 2017 PSM RECEIVED CITY OF TUKWILA JUL 1 3 2018 PERMIT CENTER 2200 SIXTH AVENUE, SUITE 601 SEATTLE WASHINGTON 98121 PHONE 206-622-4580 FAX 206-622-0422 PSM JOB: DATE: 1 /1 61/ '9 BY: i -'\ -1\ CONSULTING ENGINEERS .-/ =1 SUBJECT ii•1/4.-1.A.I., 4--,1/4 j -r4 id 2200 SIXTH AVENUE, SUITE 601, SEATTLE, WASHINGTON 98121 OFFICE 206.622.4580 www.psm-engineers.com C./ e e c.4•44, I I 11 I e-il-lp I 1'577. 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Lai 5 KPG Building Inspections City of Tukwila Building Department 6300 Southcenter Boulevard, Suite 100 Tukwila, WA 98188 RE: Permit No. D18-0212 KPG, Inc. 3131 Elliott Ave., Suite #400 Seattle, WA 98121 We have, with supplemental support from subcontracted inspection specialists, completed the requested special inspections on the subject project. All work requiring special inspection was progressively and continuously inspected to ensure compliance with contract plans and specifications and, to the best of our knowledge, is in compliance with the permit documents. Project Name: Project Address: Permit No.: City of Tukwila — Retaining Wall 6847 S 180th St D18-0212 In accordance with the permit documents, special inspections performed were: RECEIVED CITY OF TUKWILA Footings Foundation Wall JUN 1 0 2019 Concrete Construction - Reinforcing Steel Welding PERMIT CENTER - Cast in Place Deep Foundations - Epoxy/Expansion Concrete Anchor Bolts Street Use Erosion Measures Parking Tree Protection If there are any questions regarding this final report, please contact me at (907)854-3773. Sincerely, P/12, Jordan Perry, P.E. Resident Engineer KPG Construction Services FIELD AND LABORATORY CONCRETE TEST REPORT 0 ASTM C 31, C 39, C 143, C172, C231, C1064, C1231 LI AASHTO T23, T22, T119, T141, T152, T309 HWAGEOSCI ENCES INC. CLIENT: KPG PROJECT: Tukwila 2018 Small Drainage Program HWA PROJECT NO: 2018-138-21 HWA TASK NO.: TEST/SET # C-01 DATE CAST: 10/1/2018 DATE REC'D: 10/2/2018 DESCRIPTION OF CONCRETE PLACEMENT REPRESENTED BY THIS TEST: S 180th Street Bridge Retaining Wall Base COMPRESSIVE STRENGTH TEST DATA CYLINDER I.D. NUMBER AGE (days) CYL. WEIGHT (grams) TEST DATE (mm/dd/yy) CYL. TYPE (d"x I") DIAMETER (inches) X -SECT. AREA (sq. in.) MAX. LOAD (lbs) COMPR. STRENGTH (psi) FRAC. TYPE TECH. C -01A 7 3949.4 10/8/18 4x8 4.00. 12.57 50540 4020 5 KN C-018 28 3952.8 10/29/18 C-01 C 28 3963.6 10/29/18 C-01 D Hold 4002.3 28 Day Average Compressive Strength Cap used: O Un -Bonded 0 Sulfur 0 Other. Specified Minimum: 4000 1 2 3 4 5 6 INFO. FROM SUPPLIER TICKET Supplier Name: CalPortland Max: Agg. Size (in): 3/4 Time Batched: 10:40 AM Plant Number: 291 Cement Type: 1/ll Arrival Time: 11:03 AM Mix Code / No.: 3310 Load Volume (yd3): 2 Start Unloading: 11:06 AM Truck Number: 7688 Cum. Volume (yd3): 2 End Unloading: 11:15 AM Ticket Number: 1953840 Admixtures: AEA FIELD TEST DATA Slump (inches): 3.5 Specified Slump (min -max): 3.0-5.0 Time Sampled: 11:10 AM Entrained Air (%): NA Specified Ent. Air (min -max): NA Time Cyls Cast: 11:20 AM Conc. Temp. (F): 72.3 • Ambient Air Temperature (F): 60 Cast By: SP Water Added: 0 *Initial Curing Temp (min -max): N/A Mold Type: Plastic MISCELLANEOUS INFORMATION / COMMENTS Contractor / Subcontractor: Ceccanti, Inc. Concrete Placement Method: Concrete Truck Chute Field test results reported to (Contractor Representative on Site) Field test results reported to Jordan Perry (Client/Owner's Rep. on Site) *Note: In general conformance with C31 except for Section 10.1.2 when min -max temperature is not recorded. Additional slump tests on the following truckloads: HWA also visually assessed the following truckloads: Additional air tests on the following truckloads: Printed Date: October 8, 2018 Reviewed By: B. Hawkins This report applies only to the items tested, and may be reproduced in full, with written approval of HWA GEOSCIENCES INC. Revised: HB -1/23/2012 FIELD AND LABORATORY CONCRETE TEST REPORT El ASTM C 31, C 39, C 143, C172, C231, C1064, C1231 ❑ AASHTO T23, T22, T119, T141, T152, T309 Lrl�t HWAGEOSCIENCES INC. CLIENT: KPG PROJECT: Tukwila 2018 Small Drainage Program HWA PROJECT NO: 2018-138-21 HWA TASK NO.: TEST/SET # C-01 DATE CAST: 10/1/2018 DATE REC'D: 10/2/2018 DESCRIPTION OF CONCRETE PLACEMENT REPRESENTED BY THIS TEST: S 180th Street Bridge Retaining Wall Base COMPRESSIVE STRENGTH TEST DATA CYLINDER I.D. NUMBER AGE (days) CYL. WEIGHT (grams) TEST DATE (mm/dd/yy) CYL. TYPE (d"x I") DIAMETER (inches) X -SECT. AREA (sq. in.) MAX. LOAD (lbs) COMPR. STRENGTH (psi) FRAC. TYPE TECH. C -01A 7 3949.4 10/8/18 4x8 4.00 12.57 50540 4020 5 KN C-018 28 3952.8 10/29/18 4x8 4.00 12.57 61820 4920 5 KN C-01 C 28 3963.6 10/29/18 4x8 4.00 12.57 62200 4950 1 KN C-01 D Hold 4002.3 10/29/18 4x8 4.00 12.57 61260 4870 5 KN 28 Day Average Compressive Strength 4910 ap used: O Un -Bonded ❑ Sulfur 0 Other. pecified Minimum: 4000 �1at11�j 1 2 3 4 INFO. FROM SUPPLIER TICKET Supplier Name: CalPortland Max: Agg. Size (in): 3/4 Time Batched: 10:40 AM Plant Number: 291 Cement Type: 1/Il Arrival Time: 11:03 AM Mix Code / No.: 3310 Load Volume (yd3): 2 Start Unloading: 11:06 AM Truck Number: 7688 Cum. Volume (yd3): 2 End Unloading: 11:15 AM Ticket Number: 1953840 Admixtures: AEA FIELD TEST DATA Slump (inches): 3.5 Specified Slump (min -max): 3.0-5.0 Time Sampled: 11:10 AM Entrained Air (%): NA Specified Ent. Air (min -max): NA Time Cyls Cast: 11:20 AM Conc. Temp. (F): 72.3 Ambient Air Temperature (F): 60 Cast By: SP Water Added: 0 *Initial Curing Temp (min -max): N/A Mold Type: Plastic MISCELLANEOUS INFORMATION / COMMENTS Contractor / Subcontractor: Ceccanti, Inc. Concrete Placement Method: Concrete Truck Chute Field test results reported to (Contractor Representative on Site) Field test results reported to Jordan Perry (Client/Owner's Rep. on Site) *Note: In general conformance with C31 except for Section 10.1.2 when min -max temperature is not recorded. Additional slump tests on the following truckloads: HWA also visually assessed the following truckloads: Additional air tests on the following truckloads: Printed Date: October 29, 2018 Reviewed By: B. Hawkins This report applies only to the items tested, and may be reproduced in full, with written approval of HWA GEOSCIENCES INC. Revised: HB -1/23/2012 FIELD REPORT 21312 30TH Drive SE vMai 1 VUIIC I iv Bothell, WA 98021.7010 HWAGEOSCIENCES INC. Tel. 425-774-0106 Fax. 425-774-2714 HWA Job No. Task # 2018-138 Report No. 003 City Project No. Date October 2, 2018 Project Name 2018 Tukwila Small Drainage Program Location or Address Tukwila, Washington Day of the Week Tuesday Owner City of Tukwila Owner Rep. Weather Temp. (F) Cloudy 60s Client KPG Client Rep. Jordan Perry HWA Project Engineer Bryan Hawkins Contractor Ceccanti Inc Contractor Rep. HWA Field Rep. Vinnie Oskierko SUMMARY OF FIELD TIME SPENT ON PROJECT TODAY: Start Travel: 1530 Arrived at Site: 1545 Departed Site: 1600 End Travel: 1715 MISCELLANEOUS DETAILS: I traveled to the site today to collect concrete sample Set C-1, which was cast yesterday. The cylinders were taken to HWA's lab in Bothell, where they were stripped, weighed and measured, labeled, and stored for future testing. Total time spent on the project today was 2.5 hours including equipment load/unload, travel, testing, and writing this report. SIGNATURES: Signed: HWA Field Representative Reviewed: HWA Reviewer Note: Field Reports are preliminary until signed by both the HWA Field Representative and HWA Reviewer FR -003 10-02-2018 VO 5/31/2019 0 City of Tukwila Department of Community Development RYAN LARSON 6300 SOUTHCENTER BLVD - SUITE 100 TUKWILA, WA 98188 RE: Permit No. D18-0212 CITY OF TUKWILA - RETAINING WALL 6847 S 180TH ST Dear Permit Holder: Allan Ekberg, Mayor Jack Pace, Director In reviewing our current records, the above noted permit has not received a final inspection by the City of Tukwila Building Division. Per the International Building Code, International Mechanical Code, Uniform Plumbing Code and/or the National Electric Code, every permit issued by the Building Division under the provisions of these codes shall expire by limitation and become null and void if the building or work authorized by such permit has not begun within 180 days from the issuance date of such permit, or if the building or work authorized by such permit is suspended or abandoned at any time after the work has begun for a period of 180 days. Your permit will expire on 7/16/2019. Based on the above, you are hereby advised to: 1) Call the City of Tukwila Inspection Request Line at 206-438-9350 to schedule for the next or final inspection. Each inspection creates a new 180 day period, provided the inspection shows progress. -or- 2) Submit a written request for permit extension to the Permit Center at least seven(7) days before it is due to expire. Address your extension request to the Building Official and state your reason(s) for the need to extend your permit. The Building Code does allow the Building Official to approve one extension of up to 180 days. If it is determined that your extension request is granted, you will be notified by mail. In the event you do not call for an inspection and/or receive an extension prior to 7/16/2019, your permit will become null and void and any further work on the project will require a new permit and associated fees. Thank you for your cooperation in this matter. Sine rely, Ka dace Nichols Permit Technician File No: D18-0212 6300 Southcenter Boulevard Suite #100 • Tukwila, Washington 98188 • Phone 206-431-3670 • Fax 206-431-3665 September 14, 2018 City of Tukwila Allan Eckberg, Mayor Department of Community Development Jack Pace, Director Ms. Kelsey Anderson, OBO Ryan Larson, City of Tukwila KPG, LLC 3131 Elliot Avenue, Seattle WA 98121 RE: A18-0008: 2018 Small Drainage Program, project # 91841201 -repairing an existing levee retaining wall on the South 180th Street bridge. Dear Ms. Anderson: Thank you for your June 11th, 2018 letter requesting an exemption from both SEPA and a shoreline substantial development permit to repair and extend a retaining wall section along south 180th street levee, located on King County Parcel # 3623049079 within a "Flood Protection Levee Easement." Work is being conducted to restore proper functions of the levee and to prevent potential flooding at this location in the result of a flooding event. The project is described in more detail below. The purpose of this project is to extend the retaining wall at the 35.5' elevation to the bridge abutment and construct a return wall parallel to the bridge. This wall extension will assist to restore proper function of the levee and prevent potential flooding at this location in the result of a flooding event. Background The existing retaining wall on the south side of the South 180th Street bridge tapers from an elevation of 35.5' to 31.9' as it tapers under the existing bridge along the pile cap. The gap leaves a vulnerable hole in the levee that could potentially flood the nearby parcels in a flooding event. Proposed Project 1. Retaining Wall work and Bank Excavation: The retaining wall work shall be done on the upland side (west) side of the Green River Trail, and there shall be no bank excavation. The existing projects limits is out of the ordinary highwater mark (OHWM), and the Retaining Wall is the boundary for the FEMA 100 -yr flood event. Clearing and excavation will be required to expose the existing retaining wall footing at an approximate elevation of 24.5'. All excavation will be done within the existing planter strip between the Green River Trail and private parcel. The excavation will be limited to the minimum grading limits CPL Page 1 of 3 H:\\ Shoreline Exemptions\A14-0028-Boeing Developmental Center\ DC5 outfall replacement-ltr 09/14/2018 10:43 PM 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone 206-431-3670 • Fax: 206- 431-3665 rl A 14-0008 2018 Small Drainage Program SEPA and Shoreline Exemption Request September 14th, 2018 0 shown on the Contact Plans. This grading areas is approximately 230 square feet. The excavation will remove approximately 33 cy of existing planter and base material. After the footing and extension wall are formed and poured with concrete, approximately 30 cy of gravel backfill for walls will be replaced behind the retaining wall and on the new footing. At no point will excavation occur on the Green River Trail or river bank. 2. Erosion Control and Better Management Practices The following items will contribute, but are not limited to the erosion control, spill control and better management practices that will be applied to mitigate any adverse impacts the surrounding area and nearby Green River during construction: • Temporary Erosion Control will be installed at the downgradient edge of the disturbed area as required to prevent sediment transport. This may include silt fence, wattles and other geotextiles. • Excavation work will be complete in the dry months. • Secondary containment and spill kits will be on-site when heavy equipment is present and during concrete pours • Excavated materials will be disposed of at an approved upland location approved by the City of Tukwila • The source and nature of all fill material will be imported from a WSDOT certified pit source. No material at this site will be placed in the waterbody. Discussion WAC 197-11-800 (3) states that the following activities shall be categorically exempt from SEPA regulations: "The repair, remodeling, maintenance, or minor alteration of existing private or public structures, facilities or equipment, including utilities, recreation, and transportation facilities involving no material expansions or changes in use beyond that previously existing; except that, where undertaken wholly or in part on lands covered by water, only minor repair or replacement of structures may be exempt (examples include repair or replacement of piling, ramps, floats, or mooring buoys, or minor repair, alteration, or maintenance of docks). WAC 173-27-040 (2) (b) defines normal maintenance or repair as "...a means to restore a development to a state comparable to its original condition, including but not limited to its size, shape, configuration, location and external appearance...Replacement of a structure or development may be authorized as repair where such replacement is the common method of repair for the type of structure or development and the replacement structure or development is comparable to the original structure or development including but not limited to its size, shape, configuration, location and external appearance and the replacement does not cause substantial adverse effects to shoreline resources or environment." The proposed project is considered normal maintenance and repairs of an existing levee retaining wall, including comparable size, shape, configuration, location, and external appearance of the replacement Page 2 of 3 09/14/2018 A14-0008 2018 Small Drainage Program SEPA and Shoreline Exemption Request September 14th, 2018 portion of the wall. There will be no substantial adverse impacts to the shoreline resources or environment. Potential impacts are limited to short term water quality impacts (elevated turbidity, potential for spills) and habitat disturbance. These impacts will be temporary, localized, and minimal, and will be further minimized by adhering to project BMPs. No long term impacts are anticipated. SEPA Exemption A SEPA exemption has also requested for this project under WAC 197-11-800 (3), Repair, remodel and maintenance activities. This section of the WAC states that "...repair, remodeling, maintenance or minor alteration of existing private or public structures, facilities or equipment, including utilities involving no material expansions or changes in use beyond that previously existing; except that, where undertaken wholly or in part on lands covered by water, only minor repair or replacement of structures may be exempt..." is exempt from SEPA. . We concur that this project meets the exemption stated in WAC 197-11-800 (3). Decision The request for an exemption from applying for a shoreline substantial development permit and SEPA is approved. If you have any questions, please call me at 206-433-3670 or Jonathan Joseph at 431- 3662. Sincerely, Jack Pace, Director Department of Community Development Cc: David Pater, NW Regional Office, Department of Ecology Page 3 of 3 09/14/2018 ti Jonathan Joseph Q From: Minnie Dhaliwal Sent: Monday, July 2, 2018 3:05 PM To: Jonathan Joseph Subject: Fw: 2018 SDP Permitting Status / Attachments: S 180th Bridge Exemption Letter-6-11-18.pdf; S 180th Bridge Exemption Drawing Set-6-11-18.pdf Jonathan, This is entered as A18-0008 and the letters are attached in TraKIT. The request is for SEPA and Shoreline Exemption. Jack signs these letters. SEPA exemptions are listed under WAC 197-11-800 and Shoreline exemptions are under WAC 173-27-040. We could include both requests under one approval letter. There should be sample letters in Sharepoint. Let me know if you don't find one. Thanks. Minnie From: Ryan Larson Sent: Monday, June 11, 2018 10:45 AM To: Minnie Dhaliwal Cc: Hari Ponnekanti Subject: RE: 2018 SDP Permitting Status Minnie, Attached is a revised copy of the request letter with supporting documents. The following are charge numbers for this project: Staff Time: 91841201.1000.050 1 r Other items: 91841201.1000.107 412.98.594.382.41.00 Thanks for your help - Ryan From: Minnie Dhaliwal Sent: Friday, June 8, 2018 3:32 PM To: Ryan Larson <Ryan.Larson@TukwilaWA.gov> Subject: Re: 2018 SDP Permitting Status Ryan, 1 search TraklT and emails from Carol and did not find that a formal SEPA and shoreline exemption letter was submitted. It sounds like from the consultant that Kelsey could update the letter to 2018 program. You can send the updated letter and account number to charge the fee and we can get an official exemption letter signed. Minnie From: Ryan Larson Sent: Friday, June 8, 2018 1:21 PM To: Minnie Dhaliwal Subject: FW: 2018 SDP Permitting Status Minnie, I am trying to find the status of a SEPA Exemption for the 2017 Small Drainage Project. The actual project in question is located along the levee at S. 180th St and was delayed until this year. KPG had sent the attached letter to Carol last year in response to her email also attached. Can you see if this exemption was granted and if so, provide me a copy of it? If not, please let me know who I should work with on this exemption request. 2 P Thanks - Ryan 0 0 From: Kelsey Anderson <kelsey@kpg.com> Sent: Wednesday, May 16, 2018 12:44 PM To: Ryan Larson <Ryan.Larson@TukwilaWA.gov> Cc: Kirk Smith <kirk@kpg.com> Subject: 2018 SDP Permitting Status Hi Ryan, I was looking through all our Permitting collected for the S 180th St Bridge Retaining Wall and Gilliam Creek Outfall sites over the past two years. I have a few open ends that I could use your help with. 1. On 4/13/17 I sent you a pdf letter with the request for SEPA and Shoreline Exemption for the Bridge Site. The SEPA and Shoreline Exemption letter I drafted is attached. Please check if you ever coordinated this with Carol Lumb. There is a permit fee involved with the formal exemption submittal of $380.10. See attached email from Carol where she mentions exemption is likely for the S 180th Bridge site, but to get a formal determination of non -significance we had to submit a letter. If it is determined this exemption was never submitted and executed I can update the letter with this year's 2018 Program and date and we can resubmit. Let me know. 2. Do you know the status on the building permits for the S 180th Bridge and Gilliam Creek Outfall Site? Looking back at old emails, it appears Charlie Conway may have dropped them off at the Permitting office around 4/18/17. I haven't seen a copy of approved or reviewed permits. About the time KPG submitted the permits these two project locations were removed from the 2017 SDP Scope so I don't know how far the building permit review got. Breakdown of permits: HPA: Gilliam Creek Outfall: Issued 4/24/17 S 180th St Bridge: DFW Exemption Email: 4/13/17 Shoreline: Gilliam Creek Outfall: Issued: 9/15/16 — Construction must begin within 2 years of Issue Date. S 180th St Bridge: Emailed Ryan Larson Shoreline/SEPA exemption letter on 4/13/17 SEPA: Gilliam Creek Outfall: Issued Determination of Non -Significance (DNS) 7/15/16 5 180th St Bridge: Emailed Ryan Larson Shoreline/SEPA exemption letter on 4/13/17 Building Permit: Gilliam Creek Outfall: Charlie Conway with KPG submitted Building Permits to City around 4/18/17? Ryan to confirm. 3 n S 180th St Bridge: Charlie Conway with KPG submitted Building Permits to City around 4/18/17? Ryan to confirm. Thanks! Kelsey Anderson, PE KPG 1 SEATTLE • TACOMA • WENATCHEE Interdisciplinary Design 3131 Elliott Avenue Suite 400 Seattle WA 98121 o: 206 286 1640 d: 206 267 1045 c: 360 359 6817 4 c June 11, 2018 City of Tukwila Department of Community Development Attn: Minnie Dhaliwal 6300 Southcenter Blvd., #100 0 MPG - 3131 Elliott Avenue, Seattle, WA 98121 P: 206.286.1640 F: 206.286.1639 www.kpg.com Re: City of Tukwila — 2018 Small Drainage Program Shoreline and SEPA Exemption Ms. Dhaliwal: The 2018 Small Drainage Program provides necessary maintenance and repair to the public storm drainage system in locations throughout the City of Tukwila. At this particular location the City is proposing to raise an existing retaining wall and connect to the S 180th St Bridge abutment on the south side of the bridge. The site addresses a freeboard deficiency that was identified in the recent Levee Certification analysis. The existing S 180th St Retaining Wall Levee is located adjacent to the Green River Trail within NW 1/4 Section 36, Township 23N, Range 4E at Latitude: 47.441 and Longitude: -122.246. The existing retaining wall is located on King County parcel 3623049079 within a "Flood Protection Levee Easement." On behalf of the City of Tukwila Public Works Department, KPG, Inc. is requesting Exemption from the Shoreline and SEPA Permit Process. The location of this project is outside the Green River Ordinary High Water and there will be no adverse impacts to a waterbody. The minor project excavation requirements are upland of the river bank, and environmental mitigation will take place during construction to prevent any adverse impacts to the surrounding area. Per the Shoreline Environment Designation the project location is within the "Urban Conservancy — Levee — 125' Buffer." Current Condition of S 180th St Retaining Wall The existing retaining wall on the south side of the bridge tapers from elevation 35.5' to 31.9' as it tapers under the existing bridge along the pile cap. This gap leaves a vulnerable hole in the levee that could potentially flood the nearby parcels in a flooding event. Project Description The purpose of this project is to extend the retaining wall at the 35.5' elevation to the bridge abutment and construct a return wall parallel to the bridge. This wall extension will assist to restore proper function of the levee and prevent potential flooding at this location in the result of a flooding event. The retaining wall work shall be done on the upland side (west) of the Green River Trail, and there shall be no bank excavation. The existing project limit is out of the ordinary high water (OHW), and the Retaining Wall is the boundary for the FEMA 100 -yr flood event. Clearing and excavation will be required to expose the existing retaining wall footing at approximately elevation 24.5'. All excavation will be done within the existing planter strip between the Green River Trail and private parcel. The excavation will be limited to the minimum grading limits shown on the Contract Plans. This grading area is approximately 230 sq ft. The excavation will remove approximately 33 cy of existing planter and base material. After the footing and extension wall are formed and poured with concrete, approximately 30 cy of gravel backfill for walls will be placed behind the retaining wall and on the new footing. At no point will excavation occur on the Green River Trail or river bank. Construction Methods The Contractor will use an access easement to haul in any heavy equipment to excavate the existing embankment soil to expose the retaining wall footing. Power tools will be used to core drill, set wall forms, and place rebar for the wall and KPG 3131 Elliott Avenue, Seattle, WA 98121 P: 206.286.1640 F: 206.286.1639 footing extension. A concrete pump truck will sit upland in the existing parcel parking lot totipcitiagtterrconcrete for the wall extension and footing. Erosion Control and Better Management Practices These following items will contribute but are not limited to the erosion control, spill control, and better management practices that will be applied to mitigate any adverse impacts the surrounding area and nearby Green River during Construction: • Temporary Erosion Control will be installed at the downgradient edge of the disturbed area as required to prevent sediment transport. This may include silt fence, wattles, and other geotextiles. • Excavation work will be completed in the dry months. • Secondary containment and spill kits will be on-site when heavy equipment is present and during concrete pours. • Excavated material will be disposed of at an approved upland location approved by the City of Tukwila • The source and nature of all fill material will be imported from a WSDOT certified pit source. No material at this site will be placed into the waterbody. SEPA Exemption This retaining wall extension project falls under the Washington Administrative Code (WAC) 197-11-800(3) Repair, remodeling and maintenance activities, which stipulates SEPA exemption for "the repair, remodeling, maintenance, or minor alteration of existing private or public structures, facilities or equipment, including utilities, involving no material expansions or changes in use beyond that previously existing; except that, where undertaken wholly or in part on lands covered by water, only minor repair or replacement of structures may be exempt." This project proposes minor alteration of a public structure. The alteration will not change the use of the said structures, will improve the wall's operability, and will not impact the aquatic environment. As such, an exemption from SEPA review by the City of Tukwila is requested. Shoreline Exemption With the aforementioned project elements, we suggest that the described retaining wall extension project construction elements are exempt from substantial development permit requirements (Tukwila SMP 14.2B and WAC 173.27.040). The proposed retaining wall "shall be constructed no further waterward of the existing bulkhead than is necessary for construction of new footings" (WAC 173.27.040 (b)&(c)). The proposed project is a minor alteration of an existing retaining wall. There will be no substantial adverse impacts to the shoreline resources or environment. As such, we are requesting a formal letter of exemption from Shoreline review pursuant to the Tukwila SMP and WAC 173.27.040(c). Sincerely, Kelsey Anderson, P.E. Project Engineer, KPG Inc. Cc: Project Engineer, City of Tukwila, Washington s a a i 1 8 co z G m j 0 0 ss cwUgJ; banralI\ao\w er gAmowl w Wr.ve gryo vwoi s - avuWMsw1n 1 w1rirrIhwh o c)ia fdV3 310-.b1SIX3 L _ A u_ D 1 a Z W 2 0 0 illi IW £SS YWU/Y✓C bu qqa. ab9Q VIW I T - ttMI\[Westpo V, PERMIT COORD COPY PLAN REVIEW/ROUTING SLIP PERMIT NUMBER: D18-0212 DATE: 07/18/18 PROJECT NAME: CITY OF TUKWILA - RETAINIING WALL SITE ADDRESS: 6847 S 180 ST X Original Plan Submittal Revision # Response to Correction Letter # Revision # before Permit Issued after Permit Issued DEPARTMENTS: uil mg tvisio t AW c e- - public Works br -)--4g-(e u Fire Prevention Structural Planning Division Permit Coordinator PRELIMINARY REVIEW: Not Applicable ❑ (no approval/review required) REVIEWER'S INITIALS: DATE: 07/19/18 Structural Review Required DATE: APPROVALS OR CORRECTIONS: Approved Corrections Required DUE DATE: 08/16/18 ❑ Approved with Conditions ❑ ❑ Denied (corrections entered in Reviews) Notation: (ie: Zoning Issues) REVIEWER'S INITIALS: DATE: Permit Center Use Only CORRECTION LETTER MAILED: Departments issued corrections: Bldg ❑ Fire ❑ Ping 0 PW 0 Staff Initials: 12/18/2013 CECCANTI INC Washington State Department of 40 Labor & industries Home Espanol. Contact Safety & Health Claims & Insurance Page 1 of 3 Search L&I A -Z Index Workplace Rights CECCANTI INC Owner or tradesperson Principals CECCANTI, RICHARD LEE, PRESIDENT VANDERGRIEND, JON DAVID, VICE PRESIDENT MOTLAND, DONNA MARIE, SECRETARY CECCANTI, DAVID L, VICE PRESIDENT (End: 02/17/2005) BACHMEIER, DAVID J, SECRETARY (End: 02/17/2005) Doing business as CECCANTI INC WA UBI No. 600 219 994 4116 BROOKDALE RD EAST TACOMA, WA 98446 253-537-2990 PIERCE County Business type Corporation Governing persons RICK CECCANTI JOHN VANDERGRIEND; License Verify the contractor's active registration / license / certification (depending on trade) and any past violations. Construction Contractor Active. Meets current requirements. License specialties GENERAL License no. CECCAI*227CB Help us improve https://secure.lni.wa.gov/verify/Detail.aspx?UBI=600219994&LIC=CECCAI*227CB&SAW= 9/24/2018