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"Chip" Vincent, Administrator January 13, 2017 Mark Clement Boeing Corporation 737 Logan Avenue North Renton, WA 98055 SUBJECT: REQUEST FOR MONITOIRNG REPORT Boeing North Bridge Replacement Project, LUA12-000303 Dear Mr. Clement: Typically the City of Renton would send a letter that marks the beginning of a projects maintenance and monitoring period; however, the subject project was also required to comply with an Army corps of Engineers Nation Wide Permit, NWS -2011-1101. Do to multiple agencies involvement with the mitigation and monitoring the City of Renton agreed to follow the Army Corps of Engineers monitoring schedule which is 5 years in duration. Monitoring reports are required to be submitted annually for five year (Monitoring Years 1-5). The reports are due to the U.S. Army Corps of Engineers by October 31 of each monitoring year. The City of Renton requests that they are copied on all the reports submitted to the U.S. Army Corps of Engineers to ensure the mitigation is succeeding and to identify compliance with local shoreline regulations. As of the date of this letter, no reports have been received by the City of Renton. It is assumed that monitoring report year 1 was due to the U.A. Army Corps of Engineers on October 31, 2016. Thank you for providing copies of the monitoring reports to the City of Renton on the same schedule as required by your Nation Wide Permit, NWS -2011 -1101 - Sincerely, Vanessa Dolbee, Current Planning Manager cc: File 1055 South Grady Way, Renton, WA 98057 • rentonwa.gov Mitigation Planting Monitoring Report Submit this completed form to: U.S. Army Corps of Engineers, Regulatory Branch, P.Q. Box 3755, Seattle, WA 98124-3755. A completed form must be submitted 1, 2, 3, 4 and 5 years after the Corps accepts your as -built drawing of the mitigation planting area. Corps' Verification Reference Number: Permit NWS -2011-110 Date Your As-Builts Were Accepted by the Corps: 10/19/15 Date This Report Is Due: February 1 2017 Number of Mitigation Points Required by the Corps: N/A: See attached Monitoring Report Your Name: Mark Clement Your Address: 8TH & LOGAN AVE N RENTON WA 98055 Your City/State/Zip Code: Your Phone Number: 206-617-2944 You must attach to this form: M Photographs of the mitigation area taken within the last month. Date of Inspection Species name of Dead Plants Number of Dead Plants Name of Species Replanted Number Replanted* November 2, Deschampsia cespitosa 0 same 0 2016 Lupinus polycarpus 5 same 5 Lupinus polyphyllus 4 same 4 Philadelphus lewisii 0 same 0 Physocarpus capitatus 0 same 0 Salix hookeriana 164 same 164 Salix sitchensis 0 same 0 Spirea betulifolia 11 same 11 5 Araea uglasii 0 same 0 * Plants will be installed by spring of 2017. See the attached December 1, 2016, report for details regarding the Year 1 Shoreline Restoration Monitoring for the North Bridge Replacement Project. amec foster wheeler Memo Sent via e-ma'I: To: Andrew Fitzpatrick Project: 6-915-18142 The Boeing Company Renton, Washington Diana Halladay From: Jon Chalfant Amec Foster Wheeler Environment & Infrastructure, Inc. Tel: (425) 358-1000 Fax: (425) 368-1001 Date: December 1, 2016 Subject: Shoreline Restoration Monitoring - Year 1 North Bridge Replacement Project Renton, Washington This memorandum presents the results of the first-year monitoring event for the North Bridge Replacement Project Shoreline Restoration. The purpose of the monitoring was to document conditions during the first year following site installation, including a review of the heath and vigor of planted vegetation, and to assess the performance of the restoration based on established standards. Amec Foster Wheeler Environment & Infrastructure, Inc. conducted the Year 1 monitoring during a site visit on November 2, 2016. This memorandum is intended to provide the following for the Year 1 restoration monitoring: 1. Monitoring methods; 2. Monitoring results; 3. Compliance with performance standards; 4. Actions to be taken to meet current performance standards; and 5. Maintenance recommendations to help ensure the restoration site stays on track to meet future performance standards. 1.0 YEAR 1 MONITORING METHODS The shoreline restoration area (Figure 1) is located immediately south of the new bridge and comprises two separate planted areas on either bank (east and west) of the Cedar River where it outfalls to Lake Washington. Monitoring plots were not established, since the planted sections of the restoration area are small (approximately 450 square feet total), and there were concems regarding the height and potential 11810 North Creek Parkway N Bothell, Washington 98011 (425) 368-1000 Phone (425) 368-1001 Facsimile www.amecfw.com Shoreline Restoration December 1, 2016 Page 2of6 Monitoring — Year 1 amec foster wheeler stability of plot markers used in proximity to the adjacent Renton Municipal Airport runway. Instead, monitoring was conducted over the entire restoration area and included a count of individual plants (alive and dead) for each species planted (listed on Figure 2). Plant mortalities were marked using yellow flagging tied around the plant base. Invasive species present within and adjacent to each area also were recorded, along with the overall absolute aerial cover by visual estimate for each invasive species located within the restoration area boundaries. Photographs were taken from the locations shown on Figure 1 and are provided in Appendix A. 2.0 YEAR Y MONITORING RESULTS The Year 1 monitoring results for plant counts and invasive species are provided in Tables 1 and 2, respectively. Table 1 Year 1 Results - Plant Counts Planted Species Live Plants (#} Dead Plants (#) Total Count (#) Scientific Name Common Name Deschampsia cespitosa Tufted hairgrass 61 0 61 Lupinus polycarpus Small flowered lupine 20 0 20 Lupinus polyphyllus Large leaf lupine 28 0 28 Philadelphus Jewish Mock orange 7 0 7 Physocarpus capitatus Pacific ninebark 7 0 7 Salix hookeriana Hooker's willow 199 51 250 Salix sitchensis Sitka willow 7 0 7 Spirea 6etulifolia Shiny -leaf spirea 43 0 43 Spirea douglasii Douglas spirea 21 0 21 Total 393 51 444 Plant mortalities were observed only for hooker's willow (Salix hookeriana), which had 51 mortalities. There were signs of predation by wildlife on the willow, but the existing stands appear healthy. Mortalities for the other species were not identified. PA18142-0 Boeing N Bridge Monitoring120161102 Year 1 Moniloring120161201 North Bridge Shoreline Monitoring Report- Year 1.doox Shoreline Restoration Monitoring – Year 1 December 1, 2016 Page 3 of 6 Table 2 Year 1 Results - Invasive Species amec faster wheeler Invasive Species 96 Cover East West Scientific Name Common Name Bank Bank Notes Himalayan Within the south and of both banks. Rubus armeniacus blackberry 2 <1 King County Class C Noxious Weed; control recommended. Adjacent to the south end of both Phalaris arundinacea Reed canarygrass NA NA banks. King County Class C Noxious Weed; control recommended. Adjacent to the south end of the east Solanum dulcamara Bittersweet NA NA bank, on the chain link fence. King nightshade County Weed of Concern; control recommended. Adjacent to the south end of both Tanacetum vulgare Common Tansy NA NA banks. King County Class C Noxious Weed; control recommended. Perennial Adjacent to the south end of west bank. Cepidium latifolium pepperweed NA NA King County Class B Noxious Weed; control required. Abbreviations: NA = not applicable Himalayan blackberry (Rebus armeniacus) was the only invasive species present within the planted restoration areas and it exhibited low absolute aerial cover—two percent on the east bank and less than one percent on the west bank. Various other invasive species were located along the southern boundary of the planted areas of both banks (Appendix A, Photos 5 and 8). All species are listed on the King County Noxious Weed List, as either a Class B noxious weed, where control is required, or as a weed of concern or Class C noxious weed, where control is recommended. Overall, the planted vegetation was healthy, invasive species cover is low, and plant establishment appears to be successful overall. Areas devoid of planted vegetation were more apparent on the east side, above the concentrated willow plantings. Also on the east side, a broken irrigation line was observed on the north end adjacent to the bridge, and seed mix growth is encroaching into the planted area, which could potentially inhibit the growth of planted vegetation. P.M 6142-0 Boeing N Bridge Manitoring120161102 Year 1 Monitoring120161201 North Bridge Shoreline Monitoring Report - Year 1.docx Shoreline Restoration Monitoring – Year 1 December 1, 2016 Page 4 of 6 3.0 COMPLIANCE WITH PERFORMANCE STANDARDS Specific performance standards for the first year include: 0 100 percent survival of plants; and Not more than 10 percent coverage by non-native invasive species. amec foster wheeler The year 1 performance standard of 100 percent survival was not achieved, as dead plants were observed. Also, plant counts for four species were lower than that originally installed. Table 3 compares the number of plants installed to the monitoring count, and provides the number of individuals for each species that would need to be replanted in order to meet the 100 percent survival performance standard. Table 3 Species and Number of Plants Installed, Counted, and to be Replanted Planted Species Plants Installed V) Live Plants V) Dead Plants V) Total Count V) Missing Plants' V) To Be Replanted2 V) Scientific Name Common Name Deschampsia cespitosa Tufted hairgrass 61 61 0 61 0 0 tupinus polycarpus Small flowered lupine 25 20 0 20 5 5 to inu5 polyphyllus Large leaf lupine 32 28 0 28 4 4 Philadel hus lewish Mock orange 7 7 0 7 0 0 Physocarpus capitatus Pacific ninebark 7 7 0 7 0 0 Salix hookeriana Hooker's willow 363 199 51 250 113 164 Salix sitchensis Sitka willow 7 7 0 7 0 0 5 irea betulifolia Shiny -leaf spirea 54 43 0 43 11 11 5 irea dou lasii Douglas spirea 21 21 0 21 0 0 Total 577 393 51 444 133 184 Notes: 1. The number of missing plants equals the difference between the number of plants installed and the total count. 2. The number of plants to be replanted equals the sum of the dead and missing plants. Only 250 hooker's willow were found (alive or dead), compared to the 363 plants originally installed as shown on Figure 2. The plant count was also lower than the original number installed for three other species—small flowered lupine (L upinus polycarpus), large leaf lupine (L upinus polyphyllus), and shiny -leaf spirea (Spirea betulifolia). PA18142-0 Boeing N Bridge Monitcring120161102 Year 1 Monitodng120161201 North Bridge Shoreline Monitoring Report - Year 1.docx Shoreline Restoration Monitoring — Year 1 December 1, 2016 Page 5 of 6 I. amec faster wheeler The year 1 performance standard of not more than 10 percent coverage by non-native invasive species was achieved. Absolute aerial cover by invasive species was recorded at less than three percent total; two percent for the east bank and less than one percent for the west bank. 4.0 ACTIONS TO BE TAKEN TO MEET CURRENT PERFORMANCE STANDARDS The following actions are required in order to meet current performance standards: 1. Per Table 3 above, install new plants of small flowered lupine (5), large leaf lupine (4), and shiny -leaf spirea (11). 2. Per Table 3 above, install 164 live stake hooker's willow. a. Replace the 51 mortalities identified throughout the east and west banks. The dead plants should be removed or sufficiently cut back, and the yellow flagging removed and disposed of properly, to prevent confusion during the year 2 survey. b. Beyond this initial replacement of observed mortalities, additional plants should be installed to fit within the north and south ends of the existing willow stand on the east bank (Appendix A, Photos 1 and 4), where first-year mortalities were more prevalent. Planting could also occur in more sparsely planted areas of the east bank, such as the southern upslope area (Appendix A, Photo 3). Replanting on the west bank is recommended throughout the existing willow stand (Appendix A, Photos 6 and 7). 3. Complete replanting by spring 2017, to allow for sufficient plant establishment prior to the year 2 survey. 5.0 MAINTENANCE RECOMMENDATIONS Future performance standards for the restoration area include the following: + Year 2: 100 percent survival of container plants and 80 percent survival of live stake plants; • Years 3, 4, and 3: 80 percent survival for all plants; and • All years: Not more than 10 percent coverage by non-native invasive species. PA10142-0 Boeing N Bridge Monitoring120161102 Year 1 Monitodng120161201 North Bridge Shoreline Monitoring Report - Year 1.docx Shoreline Restoration Monitoring -- Year 1 December 1, 2016 Page 6 of 6 n. r amec foster wheeler Implementation of the following actions will help ensure the restoration site stays on track to meet future performance standards: 1. Implement weed control measures per the Weed Control Work Plan for all weeds located within and adjacent to the planted restoration area (Appendix A, Photos 5 and 8). 2. Repair the broken irrigation line located on the north end of the east bank, adjacent to the bridge. 3. To prevent the grass seed mix from out -performing planted vegetation, maintain the immediate areas around the plant bases free of encroaching grass. Attachment(s): Figure 1, Shoreline Restoration Area Figure 2, Plant List Appendix A, Year 1 Monitoring Photographs PA18142-0 Boeing N Bridge Monitor! ng120161102 Year 1 MonitoMng120161201 North Bridge Shoreline Monitoring Report -Year 1.doox CD a m X -n Co CD 0 , =r su 0 0 Z) S. > CD (D 2) Z PA; -------------------------- - - ------ ---------------- 4 -------- CD a m X -n Co CD 0 , =r su 0 0 Z) S. > CD (D 2) Z CD a m X -n Co CD 0 , =r su 0 0 Z) S. > CD (D 2) 77 z D m m n CO In 2 m •t S R R A R c i s a k ;jJogA Q t tF z - G O � n o z C ! n 77 z D m m n CO In 2 m •t S R R A R c i s a k ;jJogA Q ,��,. ld APPENDIX A amec foster wheeler YEAR 1 MONITORING PHOTOGRAPHS North Bridge Replacement Project Shoreline Restoration Renton, Washington Photograph 1 Photo Point #1 E; east bank; view south from north end. Photoaraoh 2 Photo Point #2E; east bank; view north from center. Amec Foster Wheeler Environment & Infrastructure, Inc. Project No. 691518142 A-1 PA18142-0 Boeing N Bridge Monitoring120161102 Year 1 MonitoringlAppendix A_Photos.docx APPENDIX( A arnec foster wheeler YEAR 1 MONITORING PHOTOGRAPHS North Bridge Replacement Project Shoreline Restoration Renton, Washington 3 Photo Point #2E; east view south from center. I 4 Photo Point #3E; east bank; view north from south end. Amec Foster Wheeler Environment & Infrastructure, Inc. Project No. 691518142 A-2 PA18142-0 Boeing N Bridge Monitoring520161102 Year 1 Monitaring\Appendix A_Photos.docx APPENDIX A YEAR 1 MONITORING PHOTOGRAPHS North Bridge Replacement Project Shoreline Restoration Renton, Washington Photograph 5 East bank; invasive species at south end. )h6 Photo Point#1W; west bank; view south from north end. I. amec foster wheeler Amec Foster Wheeler Environment & Infrastructure, Inc. Project No. 691518142 A-3 PA18142-0 Boeing N Bridge Monitaring120161102 Year 1 MonitoringlAppendix A_Photos.docx 1 APPENDIX A amec 4 foster Wheeler YEAR 1 MONITORING PHOTOGRAPHS North Bridge Replacement Project Shoreline Restoration Renton, Washington 7 Photo Point #2W: west bank: view north from south end. Photograph 8 West bank; invasive species at south end. Amec Foster Wheeler Environment & Infrastructure, Inc. Project No. 691516142 A-4 PA18142-0 Boeing N Bridge Monitadng120161102 Year 1 MonitoringlAppendix A Photos_docx CITY OF RENTON DEPARTMENT OF COMMUNITY & ECONOMIC DEVELOPMENT MEMORANDUM Date: July 19, 2013 To: City Clerk's Office From: Stacy M Tucker Subiect: Land Use File Closeout Please complete the following information to facilitate project closeout and indexing by the City Clerk's Office. Project Name: Boeing North Bridge Replacement Project LUA (file) Number: LUA-12-000303, ECF, SM Cross -References: AKA's: Project Manager: Vanessa Dolbee Acceptance Date: January 23, 2013 Applicant: Boeing Company Owner: Boeing Corporation; City of Renton Contact: Mark Clement, Boeing Company PID Number: 0723059007; 0723059001; 0723059096 ERC Decision Date: February 25, 2013 ERC Appeal Date: March 15, 2013 Administrative Approval: February 28, 2013 Appeal Period Ends: March 22, 2013 Public Hearing Date: Date Appealed to HEX: By Whom: HEX Decision: Date: Date Appealed to Council: By Whom: Council Decision: Date: Mylar Recording Number: Project Description: The applicant is requesting SEPA Environmental Review and a Shoreline Substantial Development Permit for the replacement of the North Boeing Bridge. The project would include the demolition of the existing bridge, construction and removal of a temporary trestle and the installation of a new bridge. Location: 737 Logan Avenue N Comments: Denis Law City O Mayor Department of Community and Economic Development C.E."Chip"Vincent, Administrator July 19, 2013 Mark Clement Boeing Company 737 Logan Avenue Renton, WA 98055 SUBJECT: Boeing !North Bridge Replacement Project LUA12-000303, ECF, SM Dear Mr. Clement: This letter is to inform you that the appeal period ended March 15, 2013 for the Environmental Review Committee's (ERC) Determination of, Non -Significance - Mitigated for the above -referenced project: No appeals were filed on the ERC determination therefore, this decision is final and application for the appropriately -required permits may proceed. The applicant must comply with all ERC Mitigation Measures and Shoreline Permit Conditions of Approval. If you have any questions, please feel free to contact me at (425) 430-7314. For the Environmental Review Committee, Vanessa Dolbee Senior Planner Enclosure cc: Eddie DeCarlo Foster/ Party(ies) of Record Renton City Hall 1055,5outh Grady -Way • Renton, Washington 98057. rentonwa.gov Conditions of Development Boing North Bridge Replacement Project LUA12-00031133 Project Condition Source of When Compliance is Party Notes Condition Required Responsible The applicant shall comply with the ERC Building Permit Applicant/Contrac Application and during for recommendations included in the construction Geotechnical Engineering Study prepared by S&EE, dated May 17, 2012_ The applicant shall comply with all ENC During construction Applicant/Contrac and Following for conditions of approval included in the Hydraulic Project Approval (HPA) and the Army Corps Section 10 Authorization. The applicant shall comply with the ERC During Construction Applicant/Contrac and Following tar recommendations included in the. Standard Stream Study Narrative and Habitat Data Report, prepared by AM EC Environment & Infrastructure, Inc_, dated December 2012. ,dated: 06/12/1313 Page 1 of 4 Gonditions of Development Boing North Bridge Replacement Project LUA12-000303 Boeing and/or their construction FRG Prior to Construction Permit Issuance Applicant Applicant compliance contractor shall coordinate with approved. See the City's Surface Water Division on e-mail sated the timing of their proposed bridge June 12, 2013 from the final restoration and pile cap P Surface Water removal_ Division, A. To avoid impacting the attached, proposed planting and irrigation components of the project; in 2015 or in the future, Boeing shall construct an access roadway immediately upstream of the proposed west bank planting area to the Cedar River by revising the slope down to the river and removing a portion of the old wood bulkhead. The access roadway shall be 12 feet wide and constructed of pervious material that can support contractors' equipment. Design of the access shall be reviewed and approved by the Surface Water Division, prior to construction permit issuance. B. Alternatively, Boeing could choose to pay a fee -in -lieu to the Vegetation Conservation Fund, identified in the City's SMP for mitigation in other locations along the Cedar River and remove a portion of the proposed shoreline landscaping area providing an alternative for dredging. If the fee -in -lieu option is utilized, either the amount paid shall be identified in the required federal permits or such amount shall be reviewed and approved by the City of Renton Department of Community and Economic Development_ Updated: 06/1 211 31 3 Page 2 of 4 Conditions of Development Boing North Bridge Replacement Project I_UA12-000303 A Memorandum of Agreement ERC Prior to Construction Permit Issuance Applicant/City Pursuant to a April 29, 1998 (MOA) shall be completed between Agreement for the Boeing Company and the City the Cedar of Renton granting the City the River Section 205 Flood right to access the proposed new Dame g North Boeing Bridge to conduct Reduction future maintenance dredging Project, access Operation from, under and around permission is already the bridge. The MOA shall be provided. See completed and signed prior to attached. construction permit issuance. Access shalt remain open to the PRC During Construction Applicant Boat House and pier during construction, temporary closures similar to the current operating practice today are acceptable. A sign shall be posted at the entrance of the trail access notifying the public of anticipated temporary closures, and for what duration access would be closed and/or limited. Such sign shall be posted and updated throughout the construction process. If closures of the Cedar River are RRC During Construction Applicant/Contrac for E-mail received May 30, 2013 expected, a schedule shall be stating no river provided to the City prior to closures are construction permit issuance. The anticipated throughout the closure schedule shall be provided construction to tete City of Renton Community process. Services Department, Park and Golf Attached. Course Director. A notice shall be posted near the non -motorized boat launch with a closure schedule to notify any recreational boaters of the closure schedule. A boater's safety plan shall be ERC Prior to Construction Applicant Approved Pian Attached Permit Issuance provided for review and approval by the Community Services Department, prior to construction permit issuance. Updated: 06/1 211 313 Page 3 of 4 Conditions of Development Boing North Bridge Replacement Project LUA12-000303 All truck hauling routes shall access the site through the Renton Boeing Plant site and shall not use Riverside Drive. PRC During Construction Contractor SSDP Fallowing project Applicant/Contrac Contact the If shrubs die in the Cedar River park completion for Planning as a result of the pruning or Department for impacts from the 737 wing a final inspection. crossing, the applicant shall replace such shrubs with comparable plantings, approved by the Current Planning Project Manager. SSDP Following project Applicant Contact the The applicant shall comply with the completion Planning mitigation and monitoring plan Department identified in the Standard Stream initiation of the Study Narrative and Habitat Data monitoring p n. Report., prepared by AMSC, dated December 2012. Updated: 06/12/1313 Page 4 of 4 Vanessa Dolbee From: Steve Lee Sent: Tuesday, May 21, 2013 4:31 PM To: Vanessa Dolbee; Ronald Straka Cc: Neil R. Watts; Jennifer T. Henning; Ryan Zulauf; Jonathan R Wilson; Ben Dahle Subject: RE: North Bridge MOA Draft Attachments: 9998 -Boeing -City Agreement. pdf Follow Up Flag: Follow up Flag Status: Flagged Vanessa, Per the Agreement between Boeing and the City of Renton that was signed April 29, 1998, there was already consent from Boeing to allow the City access for maintenance purposes over and across the north Boeing Bridge. I do not think we need this new agreement, which has language in there that may increase the City's liabilities associated with Boeings aircraft deliveries. The language that states Boeing would allow us access is on page 7 of the attached agreement I dug up. I believe we do not need an MOA and may need to revise the permit conditions for the proposed N. Boeing Bridge. -Steve From: Ben Dahle Sent: Tuesday, May 21, 2013 12:56 PM To: Vanessa Dolbee; Ronald Straka; Steve Lee Cc: Neil R. Watts; Jennifer T. Henning; Ryan Zulauf; Jonathan R Wilson Subject: RE: North Bridge MOA Draft Vanessa, I have circulated the MOA here at the airport and we take no exception to the MOA Draft agreement giving the City the right to access the proposed new North Boeing Bridge for dredging purposes. Thanks, Ben From: Vanessa Dolbee Sent: Monday, May 20, 2013 10:31 AM To: Ronald Straka; Steve Lee Cc: Neil R. Watts; Jennifer T. Henning; Ben Dahle Subject: FW: North Bridge MOA Draft Ron, Please find attached a draft MOU Boeing has prepared to comply with the SEPA mitigation measure and Building Permit condition of approval for the North Boeing Bridge. The SEPA mitigation measure was drafted to ensure the Cedar River Gravel Removal project would have the ability to use the bridge for the required dredging work. If you could please review the MOU and make any changes you see necessary. In addition I am assuming we will want the City Attorney's office to review the document: for approval. once we have the document closer to a final draft we can send it to the City Attorney's office. The Building Permit Condition: A Memorondum of Agreement (MOA) shall be completed between the Boeing Company and the City of Renton granting the City the right to access the proposed new North Boeing Bridge to conduct future maintenance dredging operation from, under and around the bridge_ The MDA shall be completed and signed prior to beginning work under the building permit. Ben — I have included you in this e-mail chain to make sure the Airport doesn't have any concerns and/or comments about the MOU. Please review and provide any feedback or changes. Thank you. As you all know, construction on the North Bridge cannot move forward without an executed MOU. The fish window is quickly approaching and Boeing would like to utilize all of the days available in that time frame. As such, if you could please provide you feed back as soon as possible that would be great. Thank you, `f%anessa Dofbee CED, x7314 From: Clement, Mark D mailto:mark.d.clement boein .cam] Sent: Thursday, May 16, 2013 3:29 PM To: Neil R. Watts; Vanessa Dolbee; Jennifer T. Henning Cc: Uman, Jesse D Subject: North Bridge MOA Draft Here is a Draft of the MOA between Boeing and City of Renton as part of planning condition number #2 Below is our contact -G. Bressiour for any MOA discussions on contents. Getty Btesslour Principal Senior Counsel Real Estate Practice Group Lead Boeing Law Department Office +1.206.662.6588 gerald.l.bresslour@boeing.com Thanks Mark Clement Permit Specialist The Boeing Co. 206 617-2944 XW (,le« 4 2 MAY-30-2YJ2 14-46 C I TY Lx= RENT Ohl PEPW AGREEMENT between TIHE CITY OF RENTON ,n rrHE BOEING CO PAN for 425 430 7241 P,31/15 TIDE CEDAR RIVER SECTION 205 FLOOD DAMAGE REDUCTION PROJECT past -W Fax Note 7671 Date 5"A. lot Paps 5�6di✓ Pram ca.mWr, 11M cc co. f� fah plwne G PFgne � MAY -30-2002 14:47 C ] TY OF Fh4TQ1-1 FFPW 425 4ZO 7241 P. 22/15 THIS AGREEMENT, hereby made and entered into this .%L 1998} by and between the CITY OF RENTON, WASMNGTON, a municipal corporation of thff State of Washington and the BOF -MG COMPANY a Delaware Corporation. WHEREAS, the Government of the United States of America has appropriated funds to provide for dredging, levees construction and modification of the South Boeing Bridge for a. flood deinage reduction project along the lower Cedar River in the City of Renton, and environmental mitigation measures for said flood damage reduction project, WHEREAS, tate Government of the United States of America appropriation is administered by the United States ,Army Corps of Engineers, and the City of Renton will enter into an agreement {PCA} with the United States Army Corps of Engineers for construction and maintenance of said flood damage reduction project, MIRREA,S, the United States of America appropriation is contingent upon a match of up to $5,000,040 from iron -Federal sources, WI EREAS, the United States Army Corps of Engineers will perform the initial construction of said flood damage reduction project, and perform other ob4ations as described herein, and in the Project Cooperation Agreement (PCA) between the City and the United States Army Corps Of Engineers', WMEREAS, the City of Renton will perform certain tasks, provide finding including teal estate for . said flood damage reduction project, and perforin other obligations as set forth in this Agreement, WHEREAS, Boeing will design and construct said bridge modifications, and perform such other obligations as set forth in this Agreement WEERRAS, Boeing desires to cooperate with the City of Renton in providing flood protection for the lower Cedar River, and WHEREAS, Boeing is twilling to provide an equal share o€the cost for construction and maintenance . of said flood damage reduction project with the City of Renton. NOW TI MREFORJ , in coixsideration of the mutual covenants herein it is agrood as follows: AGREEMENT DP- l'WIEN THE CITY OF RENTON N AND 71TE BOEING COMPANY[ -Pace 2 MnY-- i,1-20[32 f 4 = 47 C 1 TY OF RFNTON FDPW 425 430s 7241 P. 03 '15 SEC-nON 1. DEF;<.N><TTONS For purposes of this Agreement, the terms underlined below shall have the following ,meanings: Bement - This Agreement: Best Efforts - To make all reasonable, legal, practicable, efforts; in good faith and with an understanding Haat time is of the essence; to facilitate, assist, and expedite the work, procedures, cormraurdeatiazl, and resolution of issues required to assure the success of the project within the known constraints. Bim- - The Boeing Company, a Delaware corporation - Boeing Project Mana ex - That individual or his/her designated representatives) who shall be appointed by the Boeing CornmercW Airplane Group Renton Division (BCAGRD), Director of Facilities, to carry out the responsibilities set forth in this Agreement. l3oeing. Senior, Manner The Boeing Senior Manager of Renton Facilities and Plant Engineering. CL - The City of Renton, Washington, a municipal Corporation and an optional code City of the State of Washington. Cclministrator of Plannin uildin ublic o De r isllaer des nee - The head of the department responsible for coordinating and facilitating City personnel and contractors directly involved with the project management, construction, and all applicable City perraits and inspottions_ .Qity Project Manager - That individual or his/her designated representatives) who shall be appointed by the City Administrator of Planning/Building/Public Works to carry out thge responsibilities set forth in ties Agreement. Ci Council - The legislative body of the City of Renton comprised of seven (7) members elected at large with duties as prescribed in RCW 3$A, 12.010 ct seq., and as provided by law. City Utility Systems Division Direc#or - The huitd of the Utility Systems Division of the City Planninouilding/Publie Works Department who is responsible for coordinating and facilitating thr, management of the Project and the carrying out of responsibilities sot forth in this Agreement. DNR - The Washington State Department of /natural Resources, a public agency of the State of Washington organized under Chapter 43.30 RCW, Dreaming - The removal of sands, gravels, other unconsolidated sedimentation deposits from an in - water location using a clarushell, dragline, hydraulic mechanism, or other means, Disposal - The permanent. relocation of dredged materials, including unwanted sub -surface materials such as logs, stumps, and rootballs. EIS - The Final Environmental Impact Statcrncnt for the project initial construction and maintenance. 1<CSA - The Feasibility Cost Share Agreement between the USACE and the City of Renton to provide initial planning, initial design and EIS for the project. AGREEMENT BETWEEN TgTE CITE OF R.ENTONT AND THE BOEING COWANrY - Page 3 MIRY -30-2 32 14; 47 C1T`e OF POITON PEPIJ 425 430 7241 P.04/15 �, Loner Harbor Line - A line defining the bovindary of an area to be protected for harbor uses, Coincidental with property owned by Boeing (landward) and the State of Washington (lakeward) managed by the DNR. Levee s -The placement of fill and/or structures for the containment of floodwaters, PC -A- Project Cooperation Agreement. A spccifio agreement between the Vnited States Array Corps of Engineers (USACE) and the City of Renton required by the USAGE prior to construction of the project. Permittia Pennit Review. Pen -nit Process'urR - The procedures or process of analyzing or deciding upon any, license, permit, approval or concurrence by the City with respect to the project. Plant - The Boeing Commercial Airplane Group Plant located at 800 Park Avenue North, Denton, WA, Project - The project scope as .set forth in Exhibit "A", inoluding dredging of the loafer approximately 1,25 miles of the Cedar River, levees along the lower approximately 1,25 miles of the Cedar River, the modification of the South Boeing Bridge to include a lifting mechanism, required environmental mitigation measures and maintenance over the project life as identified in the PCA Project Cost Sharing Matrix - The proposed distribution of project costs among the projeot funding partners as set forth in Exhibit "C', which defines the amount of funding to be provided by each member of the project funding partnership_ Each partners share of the cost will depend on the final number of members that join the project funding partnership. Project cost will be distributed equally arnong the project funding partners. Pro`ect -Schedule - The schedule Weed to by the City and Boeing for permitting and constructing the project, as set forth in Exhibit "B". SEPA The State Environmental Policy Act, Chapter 43,210 RCW, and associated regulations, Chapter, 197-11 WAC. USACE - The United States Amy Corps of Engineers, a public agency of the United States of America. Waler Dependent. Use, - Referring to the uses or activities which necessarily require a shoreline location as a major and integral parrt of the use or activity. SECTION 2 : PURPOSE OF THIS AGREEMENT The purpose of this Agreement is to set forth the respective rights and obligations of Boeing and the City regarding the Project and its funding, The Project scope consists of the engineering design, permitting, project mazagement, dredging the Cedar River, the construction of levees, the modification of the South Boeing Bridge to fit it with a lifting mechanism, and project maintenance as iilmrated in Exhibit "A". Included is the assessment, design, permitting, construction and maintenance of aquatic and avian habitat incorporated as replacement mitigation for that wlrioh will be lost or displaced by the project dredging and levees. AGRREMENT BETWREN THE CITY OF PENTON kND THE 13OEING CONQANY - Paue 4 r9AY-3&-P@PC- 14:42 CITY CF PLJ4704 PP -'L! 425 430 7?_ -11 P. 5; 15 Boeing and the City will share equally in the non -Federal portion of the project cost, with reduction of said non -Federal portion by any additional partnerships and/or sale of the dredged material. Boeinng will perform design and construction of the South Boeing Bridge Modifications (as illustrated in Exlh bit 'W) and required relocation of Boeing owned existing onsite utilities as part of the project. Notwithstanding the foregoing, the amount payable by Boeing will not exceed One Million Fifty Thousand Dollars ($1,050,000), provided, however (1) if additional partners beyond Boeing the City and King County agree to share costs for the Project, tho share paid by such partners shall be applied to the reduction of the shares of the City and Boeing ratably; (2) sale of dredged material which results in net proceeds beyond $853,000 shall be applied to reduce the shzres of each partnerratably to such partner's share of costs, (3) any increase in costs of the South Boeing Bridge Modifications, not including design costs and the costs of the hydraulic truck and any equipment paid for by the City, above $1,040,060, which are due to requirements of Boeing, over those provided for in this Agreement will be paid by .Boeing, and (4) if the total project cost exceeds $8,515,000, for any other reason, the parties will in good faith attempt to agree (without either party being obliged to agree) on how such additiopal costs will be shared. The scope and intent of this Agreement is limited to the terms and conditions herein stated and shall not be construed to provide or allude to moneys, property rights, administrative procedures or physical restoration in any amount, kind or extent beyond those herein specified; nor, snail the provisions of this Agreement be construed to apply, in any manner, to any business between the parties other than those relating to the dredging of the river, the construction of the levdos, modification ofthe South Boeing Bridge, requisite mitigation measures and prosect maintenance. SECTION 3: TERI<'1t AND EFFECTIVE BATE OF AGREEMENT This agrcemcnt small coznmettre on the dale first endorsed by both parties and, unless earlier terminated pursuant to Article 12, shall terminate -at the end of the project life as specified in the ?CA. SECTION 4: FROTECT ADMINISTRATION The work described herein shall be performed under the coordination of the Boeing Company's Project Manager, and the City of Renton's Projer-t Manager, who will provide assistance and guidance to the other party necessary in accordance with the terms of this Agreement. 4.1 Common Overall RsnonsibiU1jga. Tile Boeing Commercial Airplane Group Renton Division (BCAGRD), Director of Facilities and plant Engineering, and the City Administrator of the Planning/Building/Public Works Department shall use collaborative problem solving and negotiation techniques to revieiv and attempt to resolve perceived corkflicts than cannot be resolved by the Project N•lanagers, or the Division Conunittee, 4? Common Division Manager Responsibilities. The BCAGRD Senior Manager of Facilities and Plant Engineering and the City Utility 5ygtems Division Director shall; AGREE24'l INT THE CfTY OF RENTON AND THE BOEING CQWANY" -- Page 5 MAY -_'.O-2 D2 14:48 CITY CF RDATON PE0A 425 434 7241 P. Or,/ e -- x .2.1 Serve as the point of contact and liaison during project implementation for each party. Tills responsibility may be delegated to other staff members for particular functions or purposes by mutual consent of the City Utility Systems Division Director and the BCAGRD SSnior Manager of Facilities and Plant Engineedng, This responsibility shall not abridge statutory or permit issuance responsibilities of other City officials, boards, or commissions. 4.2.2 Usc collaborative problem solving and negotiation techniques to review and attempt to resolve perceived coadicts that cannot be resolved by the Projcot Managers_ 4,2.3 Review and revise, as necessary, the Project Schedule set forth in Exhibit "B" 4.3 Conmon Projert Manager Resoo_�li ie$.. The Boeing Company Project Mmager shall nave responsibility for the project for the Boeing Company. Tha City Project Manager shall have responsibility for the project for the City. The Project Managers shall: 4.3.1 Provide each other, within a reasonable amount of tirne, with current and necessary information as requested that pertains to their respective responsibilities under this Agreement, in order to expedite review. 4.3.2 Use collaborative- problem solving and negotiation techniques to identify and attempt to resolve issues related to project implementation, 4.3.3 Cnnvene mocti3ngs as necessary with the Division and Department Committees to discuss substantive issues, the Project Schedule, and activities r -elated to the design, construction, and implementation of thn project. 4.3.4 Meet with any City or Boeing Company technical, advisory, design review, ur citizen advisory committees or other interested persons ms needed to carry out the pLWposes of this Agreement. 4.3.5 Accommodate or utilize, --upon request, reasonable opportunities to brief the City Council or the-mana-cmcnt ofthe Boeing Company on the status of the project. SECTION 5 : RESPONSIBILITIES OF THE CM OF RENTON the City shall be responsible for the following: 5.1 Planning, engineering,(other than design and construction of the modiftation of the South Boeing Bridge), permitting and project management for the preparation of tete construction pians, specifications, and cast estimates for the dredging, levees, mitigation and restoration portion of the contract for the project life as provided through FCSA and PCA between The City of Renton and the U.S. Army Corps of Engineers. 5 2 Contracting, including advertising, bidding, selection and award of dredging, levees and mitigation construction contract as provided through the PCA between The City of Renton anal the U& Army Corps of Engineers. (Excluding those portions of the construction of the modification of the South Boeing Bridge to be done by Boeing) 5.3 Administering, inspecting and paying for the dredging, levcc and mitigation construction contract as provided through the PCA between The City of Renton and the U,S. Army Corps of Engineers. (Excluding those portions of the construction of the modification of the South goring Bridge to be done by Boeing) 5.4 Securing all necessary perrrtits and approvals for the Project, including the City's Fill an,d Grade permit., Building Permit (except the City Building permit for the Boeing Modifications to the South Boeing Bridge and utility relocation's), SEPA compliance in concurrence with AGREPNIrENT BETWEEN Tf� UTY OP RENTON AND THE BOEING MhOANY - Page 6 MY 30-22 02 14: 48 C i TY OF RENTON PBPW 425 430 7241 P. 07.115 Boeing, 'and Shorelines Master Plan permit, the Army Corps of Engineers pem*s, the Washington State Department of 'Fisheries Hydraulics .Project Approval permit, the Washington State Department of Ecology's Temporary Water Quality Modification permit, and the DMR permits as provided through the PCA between The City of :Denton and the U.S. Army Corps of Engineers. 5.5 Verifying that the project and its construction aad mainienanee are at all times in compliance with Federal, State, and local laws, and the PCA between The City of Renton and the U.S. Army Corps of Engineers. (Excluding those portions of the maintenanoe of the South Boeing Bridge to be done by Boeing) 5,_6 Maintaining accurate records of the planning, design, sediment sampling 'and analysis, portnisring, and dredging and construction that are consistent with the USACE funding Agreement. 5.7 Satisfying Project mitigation identified for the project elements of this project as provided through the PCA between The City of Renton and the U.S. Army Corps of Engineers.. 5.8. Providing invoices to Boeing for payment of work in accordance with Section 1 1 herein and Exhibit "C" 5.9 Paying for the design and engineering consultant for the work on the South Hoeing Bridge modifications at the expense. of approximately $280,000. The parties have chosen a design and engineering consultant for the work on the South Bating Bridge modifications at the expense ofappro;dn ately $280,000.00. The City of Renton will pay such amount. 5,10 Supplying a satisfactory operations and maintenance manual for the project in collaboration with Boeing, 5.11 Paying for die truck and equipment on the truck used for the hydraulic jacking of the South Doting Bridge, which purchase shall be Handled by Boeing in coordination with the City. SEC110N 6: RESPONSMIL=S OF BOEING Boeing shall be responsible for the following: 6.1 Providing the design and construction for the modification of the South Boeing Bridge. Providing all maintenance of the South Boeing Bridge and its modifications. 6_2 Designing and constructing utility relocation for those utilities held by Boeing requiring relocation due to the project. 6.1 Providing the City oath funding in the amount determined pursuant to Section 2, 6.4 Keeping records: Boeing shall assist the City in maintaining accuratt records of all work related to the Project necessary as supporting documentation for compliance with the all project funding Agreements. 6.5 Granting the City access over and across the north and South Boeing bridges for maintenance purposes. The City shall provide notice of the need For maintenance access, except in the event of an emergency in which case immediate access will be allowed. This agreement grants the City access over and across Boeing property for maintenance purposes. Booing will develop, in cooperation hath the City, the required rime constraints and logistics associated -Mth any required access prior allowing maintenance access. AGREEMENT BETWEEN TPT CITY OF RDNTON AND THE BOEIhrG COMPAbtY - Page 7 MAY --30--2032 14:49 CITY OF RENTD4 Pa'W 425 430 7241 P.00/15 r SECHON 7 ;TEWWG OF PROJECT The City and the Boeing Company will make all best efforts to assure that construction can occur and be completed in 1998 pursuant to the Project Schedule attached as Exhibit "B". SECTION 8 :ACCESS TO SITE The City of Renton, its contractor and authorized personnel, and agents of the City are hereby granted the right and perno ssion of access and use of that portion of the Boeing Company property necessary for the removal and transport of dredge spoils and fill materials, levee construction and in order to make modification to the South. Boeing Bridge as shown in Exhibit E attached hereto across the north and south Boeing bridges. Access to Boeing property shat be in accordance with Boeing Company Rules and Security requirements, and shall be limited to the duration of the project or during maintenance. SECTION 9 !LEGAL RELATIONS - HOLD HARMLESS 9.1 General Indemnity. To the maxim -urn extem permitted by applicable law, the City of Renton and The Boeing Company shall }protect, indemnify, defend and hold harmless each other, and their respective employees, agents, contractors, subcontractors, officers, directors, attorneys, successors and assigns, from and against any and all liabilities, damages, chums,' demands, judgments, losses, harm, costs, expenses, suits or actions, including but not limited to appeals, caused by the ncgligent acts, omissions or intentional misconduct of the indemnifying paxty, its agents, employees, contractors, subcontractors, officers, directors, attorneys, successors or assigns, arising out of or in connection with or as a result of this Agreement or the performance by the indemnifying party of any of its obligations hereunder. The City and Boeing shall, to the maximum extent allowed through agreement between The City of Renton and the U.S. Army Corps of Engineers, ensure that each of their respective contractors and their Subcontractors who perforin work in connection with this Agreement, provide an indemnity, enforceable by and for the benefit of the, City and Boeing, causing each such contractor and subcontractor to indemnify and hold harmless the City of Renton, Becinp, their respective subsidiaries, and their directors, officers, ernployees and agents from and against all actions, causes of actior� liabilities, claims, suits, judgments, liens, awards, and damages, of any kind and nature whatsoever (hereinafter "Claims"), for property damage, personal injury or death (including without limitation, injury or death to employees of such contractors or any subcontractors) and expenses, casts of litigation and counsel fees related thereto, or incident to establishing the right to indemnification, to the extent such claims arise out of the negligence or intentional misconduct of such contractor or subcontractor in performance of work in conjunction vAth this Agreement. AG 1;IYENT BETWEEN THE CITY OF RENTON AND THE BOEING COMPANY - Page 8 WIY-ata- 4x32 14:45 Ci TY 1a17 RENTON PI3 V 425 430 7241 P.69/15 The City acid Bocing shall cause, to the extent allowed by the USACE, each such contractor and subcontractor to waive any immunity under industrial insurance, whether arising from Title 51 of the Revised Code of Washington or any other statute or source to the extent of the indemnity required in the para=graph above, and the City and Boeing do hereby similarly waive, as it relates to each other, any immunity under Title 51 RCW. In the event that either Boeing or the City is successful in proving that the foregoing indemnity is limited by RCW 4.24.115, the successful party shall defend, indemnify and hold harmless the indemnitees to the full extent allowed by .RCW 4.24,115. Si -CYTON 10 : LEGAL RELATIONS - INSURANCE The City and Boeing shall endeavor, to the extent allowed through agreement between The City of Renton and the U.S. Army Corps of Engineers, to ensure that each of their respective contractors and any of their subcontractors who perform work in connection with this Agre=ent, provide Commercial General Liability insurance with limits of not less than Onc Kill ion Dollars ($1,000,000) per occurrence, Two Million Dollars ($2,000,000) general aggregate; for bodily injury, including death and property damage combined_ Such insurance shall contain coverage for all premises and operations, broad form property damage, contractual liability and products and completed operations insurance with limits of not less than One Million Dollars ($1,000,000) ger occurrence and in the aggregate for up to a maximum of two -years following the completion and final acceptance of the project. Any policy which provides the insurance required under this paragraph shall be endorsed to name Boeing, its subsidiaries, and their directors, officers, agents, and employees, and the City, its elected a$icials, agents and employees, -as additional insured with respect to liability arising out of or in any why related to contractor's or any subcontractor's work in connection with this Agreement without qualification, limitation or reservation. If licensed vehicles will be used by arty of the City`s or Boeing's contractors or any of their subcontractors in connecdon.with this Agreement, the City and Boeing shall ensure that each such contractor and subcontractor carries and maintains Automobile Liability Insurance covering all velucles, whether. owned, hired, rented, borrowed or 'otherwise, with limits of liability of not less than One Million Dollars ($1,000,000) per occurrence combined single lirttit for.bodily injury and property damage. SECTION 11 : PAYMENT OF FUNDS Subject to the conditions of this agreement, Boeing will make payment on invoices submitted by the City of the amounts provided for in Section 2, SEC170N 12 : ABANDONMENT OF PROJECT AND TERMaNATION OF AGREEMENT In the event of unanticipated financial or regulatory impediments, this Agreement may be terminated by Boeing or the City upon thirty (3 0) days advvice written notice; only prior to the City signing the USACE PCA. After execution of the PCA, tate agreement will remain in effect until termination of AGREEMENT BETWEEN THE CITY OF PENTON AND THE BOEING COW.4NY - Page 9 L i I Ur rutiLAI( rrrw 4�D v.rJ rc-fl r.lka.,ID the PCA. Each party shall be responsible for fulfilling any obligation that has accrued prior to the date of termination. Section 9 (and all other provisions of this Agreement which may reasonably be interpreted or construed as surviving the completion, cancellation or termination of this Agreement) shall survive the completion, cancellation or termination of this Agreement. SECTION 13: WAIVER No waiver by either petty of any term or condition of this Agreement shall be deemed or construed as a waiver of any other term or condition- No waiver shall be effective unless in writing. SECTION 14: AMENDMENTS Any amendments or modifications of this Agreement shall be made in writing executed by the parties hereto, and neither the City or .Boeing shall be bound by verbal or implied agreements. . SECTIJN 15 :DISPU7"E RESOLUTION 15.1 Resolution by the Project Managers. The Project Managers shall use their best efforts to resolve disputcs and issues arising out of or related to the project. 15.2 Boeing Company/City of Renton Department and Division Committees. The Boeing Company and the City shall establish Department and Division Committees that will meet as necessary to resolve issues related to the project and the carrying out of the provisions of this Agreement. The Project Managers will jointly provide stair support to the Department and Division Committees by fadlitating its meetings and by establishing mutually agreed upon meeting dates and agendas. The Department Cortunittee shall consist of the Boeing Commercial Airplane Group Renton Division (SCAGRD), Director of Facilities or their designated representative and the City Administrator of the Planrting/Building)Tublic Works Department. The Division Committee shall consist of the BCAGRD Senior Manager of Facilities arid Plant Engineering and the City Utility Systems Division Director. 15.3 Resolution by the BCAORD Senior.Manager of Facilities and Plant Engineering and the City Utility Systems Division Director. In the event that disputes cannot be resolved by Project Managers the BCAGRD Senior Manager of facilities and Plant 1Fn&eering and the City Utility Systems Division Director (together the "Division Committee") will apply their best efforts to resolve disputes and other rnatters bchveen the Boeing Company and the City arising out of or, related to the project. Each of the Division Managers will consult t+vith responsible staff and officials from their respective organizations regarding existing requirements or other policies and procedures before attempting to resolve disputes. 15.4 Resolution by the SCAGRD Director of Facilities and PlantEngineering and the City Administrator of PlanningMuilding/Pubfir, Works Department. If the Division Committee is unable to resolve a matter Mthin five (5) days of the time such matter is properly referred to there; the Division Managers shall ask- the 13CAGKD Director of Facilities and the City Administrator of the Planninouilding/Pubkc Works Department (together flit "Department AGREEN-JENi T BETWEEN THE CITY OF RENTON AND -TTM BOBING COMPANY'- Page 10 Cornn-dttee") to resolve the dispute. In tht event of an emergency, a project dispute may be referred directly io the Department Committee for resolution. I S.5- Exhaustion ofthe Dispute Resolution -Section. -The Boeing. Company -and -the .City agree to exhaust each of these procedural steps before seeking to resolve disputes in a court of law or other tribunal. 15.6 Dispute resolution shall be inctuded in every Contract or subcontract unless prohibited by the U.S. Army Corps of Engineers. W. WIT>~TF.S5 WHEREOF, the paries hereto have executed this agreement on the day Iast written below. CITY 17ENTON THE BOEING COMPANY Ma r Jesse Tanner Director ot Facilities and eryices, Boeing Commercial Airplane Group Renton, Division Date: Date: ATTEST: ))U'1UL i Marilyn X, vocWn City Clerk Date; ,W 41 AT Xl A.S T :.k'ORlI�: �� • dt-'r,— Lawrence T. -Warren City Attorney Date: A/ _city 15:2G.as. AGREEMENT BETWEEN THE CITY OF RENTON AND THE BOEING COMPANY - Page 11 �_�r noci urc rarw EMBIT "A" ; PROJECT SCOPE 4GJ gJFK 4 G:A 1 r. 1GJ 1J The'pilrpase afthis"pfoject is to reduce flood haaards arO associated flood damages caused by flooding of the Cedar River in Renton. The project consists of the folfowwiag: A. Dredging to a depth of approximately four feet below the 1995 channel bottom from Lake Washington to the Logan Avenue North Bridge over the Cedar River, then tapering to a dredge depth of zero font at or near the Williams Avenue North Bridge over the Cedar River at approximately river mile 1. 25. B. Construction of leveedfloodwalls along the right and left banks of the Cedar River from Lake Washington to approximately river mile 1.25, including. restoration. C. Modification of the South Boeing Bridge with a hydraulic system that will jack the bridge up to allow flood flows to pass during extreme flood events. 13 oeing shall have sole authority for contract administration and construction ra"ernent over thr. South Boeing Bridge, D. Planting_of habitat enhancement in the project construction area and the wnaru(ction of a ground water salmonid spawning channel on City owned property east of the Maplewood Golf Course to rnztlgate for project impacts. E. Maintenance and operation of the project following construction:. Maintenance dredging will be required. whenever sediment accumulation meets or exceeds the maximum acceptable figure for sr,,liment accurnula ion in the operations and maintenance manual if financially feasible and the necessary permits can be obtained. Annual maintenance of the South Boeing Bridge jacking systern, floodwallsllevees and vegetation will also be required over the life of the project. Costs associated with maintenance and operation are separate from the total initial project construction cost. AGREEN ENT BF-TWEEN THE CITY OF PENTON AIND THE BOEING COMPAI-TY - Page l? EXTUB1T "B"': PROJECT SCHEDULE The following is the General Project Schedule provided by the U.S. Amy Corps of Engineers, Seattle Branch dated -arch g, 1998. TASKS CONTLETION DATE USACE request project approval and construction funds 319198 U'SACF approval of ro'ect and construadan funds from HQ 3110/98 Com lete Plaas and S ecs. for Prase 1 Construction 3/13198 Obtain all necessary local, state and federal permits for the ro'ect 4/17/98 Execute USACE Project Coo eration Ageement 4/20/98 Certify Real Estate 515198 Phase 1 Construction - Dredging, Bridge & Miti anon Route USACE Form 1 to authorize advertisement 3/2.3/98 Advertise for Phase I construction bids 4/07/98 Open Phase 1 construction bids 5/07/98 Local sponsor funding provided for nota -federal share of roject cost 5/11/98 Award Phase 1 construction oontract 5121/98 Notice to procced with Phase 1 ccrostruction is issued 613198 'Phase 1 construction starts 6/15198 Phase 2 Construction - Levees & Floodwalls - Route USACE Farm l to authorize advertisement 5/27198 Advertise for Phase 2 conmrnction bids 6/10/98 _gpen Phase 2 construction bids7117/98 Award Phase 2 construction contract � 7/31/98 Notice to proceed with. Phase 2 construction is issued $!1.3198 Phase 2 construction. starts 8124198 Phase 2 flood control facilities are o erational 11/15198 Complete restoration of project area and mitigation measures. Make fizzal payrnen.t to contractor 6/1199 Sty Projcct moritorin 6/2/99 Perform project O&M as re aired by project O&M TMDUal. 4n. -going AGPJ�EMENT BETWEEN 7HE CITY OF RENTON AND THE BOEING COMPANY - Wage 13 EXHIBIT "C": PROJECT COST SHARJTG NLATRIX Attached is the project cast sharing matrix. AGREEMENT BETWEEN TIM CITY OF RIENTON AND TIM $OEING CowAN-Y - $alze 14 TCITHL P. -- -U C? P+ a a � x _ f j F. rd a O ,. !� -� C! a V 2 W TCITHL P. -- Vanessa Dolbee From: Clement, Mark D <mark.d.clement@boeing.corn7 Sent: Thursday, May 3D, 2013 8:39 AM To: Vanessa Dolbee; Neil R. Watts; Kelly Beymer Cc: Robert Shuey; Hibbard, Bradley D Subject; Boeing North bridge project Follow Up Flag: Fallow up Flag Status: Flagged This e-mail is to inform you that Boeing's contractor has no plans to close the Cedar River during the lifetime of the project. Of course if that changes, we will inform you per the boater safely plan Most major construction activities will occur between 7:00 pm to 7:00:m. Please contact me with any questions Mark Clement Permit Specialist The Boeing Co. 206 617-2944 W"&empd I PUBLIC WORKS DEPARTMENT Orf of M E M O R A N D U M DATE: June 4, 2013 TO: Neil Watts, Development Services Director FROM: Ryan Zulauf, Airport Manager SUBJECT: North Boeing Bridge Reconstruction Project — Satisfaction of Condition Please refer to City of Renton Permit No. B13D00865, issued April 15, 2013 ("Permit"). The undersigned, the Airport Manager of the Renton Municipal Airport, hereby confirms that the City has granted, and by delivery of this Notice to The Boeing Company hereby grants, its permission to The Boeing Company: To use property owned by Renton Municipal Airport that isnot included as part of the "Premises" under the Lease Agreement dated June 1, 2010 (as amended) between the City of Renton and The Boeing Company as required to complete the project that is covered by the Permit, and To make alterations on property that is included as part of the Premises under said Lease Agreement as required to complete the project that is covered by the Permit. It is the intent of the City of Renton that the execution of this Notice by the City's Airport Manager and the delivery of such executed Notice to The Boeing Company shall, when a copy of such executed notice is delivered by The Boeing Company to the City of Renton's Development Services Director, satisfy condition no. 6.1 set out in the Permit. The Citry oARenton Manager Date Signed: cc: Gregg Zimmerman, PW Administrator Doug Jacobson, Deputy PW Administrator—Transportation Chip Vincent, CEO Administrator Vanessa Dolbee Vanessa Dolbee From: Neil R. Watts Sent: Wednesday, June 05, 2043 3:30 PM To: 'Clement, Mark D'; Vanessa Dolbee; Chip Vincent; Ryan Zulauf; Kelly Beymer Cc: Uman, Jesse D; Robert Shuey; Craig Burnell Subject: RE: North Bridge Construction Start Approval Follow Up Flag: Follow up Flag Status: Flagged Mark This email is verification that all the remaining building permit conditions for commencement of construction of the North Boeing Bridge have been satisfied. The contractor is authorized to begin work perthe approved plans and permits at this time. The City Building Inspector for this project is Rob Shuey. Rob has already been in contact with the contractor to discuss site inspection needs. Neil Watts, Director Development Services Division 1 Vanessa Dolbee From: Kelly Beymer Sent: Wednesday, June 05, 2013 10:00 AM To: Vanessa Dolbee; Terry Higashiyama Subject: RE: Boater Safety Pian - North Boeing Bridge Follow Up Flag: Follow up Flag Status: Flagged Hi Vanessa, "hank you for the opportunity to review the revised Boater Safety Plan for the North Boeing Bridge construction project. Community Services, Parks and Golf Course Division approves the 5/24/13 Boaters Safety Plan. The contractor has already contacted Parks to coordinate the signage placement. Kelly XeJ y Beyww,r Parks and Golf Course Director 425-430-6817 kbevmer5_rentonwa.aov From: Vanessa Dolbee Sent: Thursday, May 30, 2013 11:15 AM To: Terry Higashiyama; Kelly Beymer Subject: Boater Safety Plan - North Boeing Bridge Terry, In Kelly's absence please find attached the final Boater Safety Plan, submitted to the City from Boeing for the North Boeing Bridge Construction project. Kelly Beymer, Gary lamb and myself have reviewed the plan previously and provided Boeing with feedback. The attached plan incorporates the City's feedback, almost exactly how we requested. In addition, please find attached the e-mails sent to Boeing with the City's comments. It is my understanding that Boeing would like to start construction in the reviewer on June 1, 2013. Please review the attached pian and let me Know if it is satisfactory for Community Services. If changes are required, please let me know and I will coordinate with Boeing on the required changes. Second, a mitigation measure and condition of approval of the North Boeing Bridge project, was for Boeing to Notify the City of any river closures. At this time Boeing does not anticipate any river closures throughout the construction project. Please find attached the e-mail from Mark Clement stating this. Lastly, Kelly has requested that Boeing coordinate with Community Services in posting the warning signs at the non - motorized boat launch points. If you could please provide Mark Clement with the contact information of the staff person you would like Boeing to coordinate with on posting of the signs that would be helpful_ Mark's a -mail address is mark.d.clement@boeing.com or he can be reach at 206-617-2944. if you have any questions and/or comments please let me know. Thank you. Vanessa DAce CED, x7314 From: Clement, Mark D fmailto;mark,d.clementCabboeina.coml Sent: Tuesday, May 28, 2013 3:05 PM To: Vanessa Dolbee Cc: Neil R. Watts; Sandy Minniti Subject: Vanessa, Here is our final Boater Safety Plan with the cities revisions incorporated in the plan. Thanks Mark Clement Permit Specialist The Boeing Co. 206 617-2944 art z Boeing Cedar River North Bridge Replacement Project Boaters Safety Plan Date: May 24, 2413 Subject: The Boeing Company Boater Safety Plan for the Cedar River North Bridge Replacement Project From: Mark Clement, Boeing Permit Administrator To: City of Renton Department of Community and Economic Development Route To. The project is to replace the North Bridge over the Cedar River at Boeing's Renton Facility_ The North Bridge is adjacent to the Renton Municipal Airport runway and is located at the mouth of the Cedar Rives, directly before it enters Lake Washington. This. project is extremely critical to the business operations of Boeing Commercial Airplanes in Renton. On a daily basis, production aircraft assembled in the Renton factory must be transported across this bridge to the Renton Municipal Airport where they undergo final preparation and testing before take -off. There is no alternative means to transport aircraft from the factory to the airport. Loss of function of this bridge would disrupt production, resulting in economic losses and impacts to employment. Work is scheduled to start June 3, 2013 and end December 2, 2015 and will include installation of a temporary bridge, demolition of the existing bridge, and construction of the replacement bridge. During construction, planned in -water and overwater construction activities will intermittently constrain the channel width available for safe passage by recreational users. In response to Mitigation Measure 9 of the City of Renton Environmental review Conunittee Report (February 25, 2013), the Boeing Company is submitting the following Boater's Safety Plan for review and approval. River Characteristics and Existing Public Uses in Vicinity of Site Near the project site, the Cedar River flows north in a straightened course that appears to confine the river channel in places using levees. With no river bends for more than 1/2 -mile upriver the, bridge is highly visible. The gradient and therefore velocity, of the river is low in this reach allowing for easy passage and adequate time to react and exit the river_ In the approach to the bridge there are no rocks or obstacles that require maneuvering to avoid. Boeing Renton Cedar River North Bridge Replacement Project Boater Safety Plan Date: May 24, 2413 Page 2 Primary uses include fishing, non -motorized boating and nature viewing. Use peaks in the summer months, coinciding with sunny weather. There are signs posting the river as limited to non -motorized vehicles both on the bridge at the mouth of the river as well as at the nearby Cedar River Trail Park boat launch, which is just up river from the construction site. Typical non -motorized boat use includes - Canoes, Rowing shells, kayaks, float tubes. With regard to recreational use there are two significant stakeholders with active interests in potential impacts: • Cedar River Boathouse which houses the Cascade Canoe & Kayak Center o Cedar River Boathouse — • 1060 North Riverside Drive, Renton WA • (425) 430-0111 hftp./Irentonwa.gov/living/default.aspx?id�6 o Cascade Canoe & Kayak Center, Renton ■ 1-888-485-2925 • http-llwww.canoe-kavak.com/ • Renton Rowing— Rowing club that launches from the Cedar Riverboat launch o Renton Rowing Membership Meetings inf o@rentonrowin g.or� Scheduled for the 2nd. Monday of the month at 7:00 PM Skyway branch of the King County library Skyway Library 7614 S. 126th St., Seattle, 98178 206-772-5541 Bridge Construction Impacts and Public Safety Rusks During construction, planned in -water and overwater construction activities will intermittently constrain the width of the river channel available for safe passage. On occasion, construction activities may pose a river wide risk to recreational users. Construction activities will include, but are not Bruited to: • Overwater demolition of concrete structures • tri -water demolition of piles and foundations Boeing Renton Cedar River North Bridge Replacement Project Boater Safety Plan Date: May 24, 2013 Page 3 • PIacement of sheet piling or other cofferdams • file driving and construction of drilled shafts • Bridge pier and girder erection with cranes • Channel re -grading and restoration Environmental considerations for the Cedar River limit all in -water work for the bridge to a short summer window, June i to August 151i. Due to the in -water nature of this work that coincides with the peak season for river recreation, construction activities during this window will have the greatest impact- Construction mpactConstruction is also scheduled to occur outside of this summer work window, but with all work occurring above OHW (Ordinary High Water) there will be less impact on recreational river users. However, during this period the bridge superstructure will be under construction and overwater crane use and other construction activities may pose the risk of falling objects. To reduce impact to the adjacent Renton Municipal Airport, the current plan is to perform construction work at night to the extent possible. Nighttime and Noise Variance requests have been submitted and approved by the City of Renton Mitigation measures The Boeing Company proposes the following measures to uwinimize impacts to river recreation activities and promote river safety during construction. However, river recreation is inherently dangerous and Boeing makes no representation or warranty of safety and recognizes that it has no authority to limit use of the river. Boeing and the contractor hereby disclaim any responsibility for, and shall not be held accountable for any loss, damage, or injury that may be suffered by users or visitors to the sites (the Cedar River and its access points) that do not heed clearly posted and verbal safety warnings and instructions. Boeing shall ensure that signs remain in good condition throughout the project. To the extent possible, construction activities will be carried out to maintain a channel width adequate to allow for the safe passage of non -motorized boat traffic. Typically work will occur on one side of the river at a time. For these cases, warning signs will be posted both upriver and downriver to notify users of construction activities, inform them of which side of the river is impacted, and give adequate notice to provide them with a timely opportunity to exit the river. As previously mentioned, to the extent possible work will be at night, when recreational river use is minimal, which will help to reduce impact Nighttime construction activities will be well lit and be visible to recreational users approaching from the river or lake. On limited occasions construction activities may pose a river wide risk to recreational users. An example of one such activity includes the setting of the girders for the replacement bridge. Once the construction schedule has been developed, the schedule of expected river closures will be provided to the City of Renton Community Services Department, Park and Golf Course Director. A. notice for recreational boaters of the anticipated closures will be posted near the Cedar River non- Boeing Renton Cedar River North Bridge Replacement Project Boater Safety Plan Date: May 24, 2013 Page 4 motorized boat launch and upstream locations. Boeing will provide notice to the City of Renton, with a 5 - day lead time, of closures that vary from the posted schedule in order to allow For notification to the public. During the river wide closure events, in coordination with the appropriate authorities having jurisdiction over river closures, upriver signage will be posted requiring exit from the river. A flagger will be stationed upriver in a location that will allow for suitable visibility and adequate time to warn and direct any river traffic to exit the river at the Cedar River boat rarnp. Flagger will be in radio contact with contractor and procedures will be in place to halt construction activities if a recreational user is unable exit the river in time. Proposed mitigation measures: • Signage (See Appendix for locations) o For signs to be viewed by in -water users, sign location and lettering shall be selected to be clearly visible from at least 300 ft upstream from the sign's location. o Signs shall be 24 inches by 24 inches and mounted on 3/4 inch high-density overlay plywood faced with engineer grade, premium quality, reflective sheeting. o Final language and layout for the signs shall be submitted to the City of Renton for approval. o Signs shall have "Caution" visibly written on the sign. o Signs shall have the text "Bridge Construction Ahead, Proceed At Your Own Risk" written on the sign. a Up -river signs shall have text indicating approximate distance to river hazard ahead. o Placement of signs at river edge shall be coordinated with Renton's Parks Maintenance Division, and secured on a 4 -inch by 4 -inch non -treated wooden post and placed at least 3 feet in the ground using native soil or rock_ o Attachment method of signs to up -river bridges shall be coordinated with the City of Renton Parks Department. Boeing Renten Cedar River North Bridge Replacemmt project Beater Safety flan Date: May 24, 2013 Page 5 ■ Sign Placement o Lake Washington ■ Provide warning buoy or float on the Lake Washington side of the river and warming signage stating "Caution Bridge Construction Upriver. Proceed at Your Own Risk." o Cedar River Trail Park— ■ Sign visible to in -water users shall say "Caution, Bridge Construction Ahead. Exit River Here or Proceed at Your Own Risk" ■ Way -finding route for alternative access to Cake Washington shalt be posted. Closest public boat Iaunch is at Gene Coulon Memorial Beach Park_ ■ Updatable sign with anticipated construction schedule shall be posted ■ Sign stating "Caution Bridge Construction Ahead 900 FT. Exit River 300 -FT Ahead on River Right. Proceed Beyond at Your Own Risk" and visible to in -water users shall be placed 300 -FT upstream from Cedar River Trail Park boat ramp. o Boeing South Cedar River Bridge — ■ Sign shall be attached to upstream face of Bridge stating "Caution Bridge Construction Ahead. Exit River 112 -Mile Ahead on River Right. Proceed Beyond at Your Own Risk." o Cedar River Park — ■ Post signs along paths to launch area for hand carried watercraft and visible from river stating "Caution Bridge Construction Ahead. River Exit 1 -112 -Mile Ahead. Proceed Beyond at Your Own Risk." a Maplewood Roadside Park — Upper and Lower • Post signs along paths to launch areas for hand carried watercraft stating "Caution Bridge Construction Ahead. Exit River 2 -112 -Miles Ahead. Proceed Beyond at Your Own Risk." Boeing Renton Cedar River Norilt Bridge Replacement Project Boater Safety Flan Date: May 24, 2013 Page 6 • River Closure announcements and other notifications will be posted on the City of Renton Website. • Pubhc announcements shall be planed in the paper • Post on King County Website -- Know hazards in King County rivers o http_flwww.kingcounty. v/recreation/boatingfrivers.aspx ■ Signs and notifications of project impacts to recreational river users shall be posted at the Cedar River boat House in coordination with Cascade Canoe & Kayak Center and City of menton Parks. Boeing Renton Cedar River North 13zidge Replacement Project Boater Safety Plan Date. May 24, 2013 Page 7 APPENDIX A ■ M y \\° 4 a� . r, :b��y» .yv> -^ > � . .:......c .«� y w.�� ayr . y H 0 C;) C:3 Ln A40 VE A.j; AL IL A40 VE A.j; -k Kol Vanessa Dolbee From: Steve Lee Sent: Wednesday, June 12, 2013 1:50 PM To: Vanessa Dolbee Cc: Ronald Straka Subject: N, Boeing Bridge Replacement Project The Surface Water Utility requested that a ramp be installed from the East Perimeter Airport access way next to the runway to the bottom of the Cedar Riverjust upstream of the proposed North Boeing Bridge Replacement location. The Boeing Company responded (via their consultants and the Boeing PM) with the following; that this `permanent' ramp could become a stability issue between the toe of slope to the East access road resulting in additional geotechnical design and environmental permitting, that the permitting would require substantial changes to the DARPA along with additional mitigation for the permanent ramp installation, and that no existing ramp is currently in place. Surface Water Utility responded that as part of the future maintenance dredge work that the City would install a temporary ramp down to the river if access is needed to conduct dredge material excavation from upstream of the North Boeing Bridge and Boeing would not have to install the permanent ramp. 1 'UA 12- c�9d� DEPARTMENT OF THE ARMY SEATTLE DISTRICT, CORPS OF ENGINEERS �. P.O. BOX 3755 „ SEATTLE, WASHINGTON 96124-3755 REPLY TO ATTENTION Ofi Geotechnical and Environmental Restoration Branch April 26, 2013 f Mr. Steve Lee 1055 South Grady Way Renton, WA 98055 Dear Mr. Lee: The Seattle District, U.S. Army Corps of Engineers (Corps) has completed a review of the design drawings provided by the City of Renton for modification of the Cedar River Section 205 Flood Control Project. The location shown on the drawings for the proposed work is downstream of the footprint of the Authorized Federal Project and is not considered part of the Federal Project. As such, modification of the North Boeing bridge does not require 44 USC 408 approval. However, since the bridge is adjacent to the Federal Project, work done to the bridge will impact the flood conveyance of the project. The analysis provided by the City shows an improvement to the hydraulic capacity of the channel after the bridge is completed and we concur with that finding. Continued coordination will be required throughout construction to ensure that proper construction techniques are used. As -built plans should be submitted to the Levee Safety Program Manager (Dennis Fischer), Seattle District upon completion, Our review of your project modification request only pertains to the flood control aspect of the request. Any other permit or approval must be obtained fi,om the appropriate source. If additional information is needed, please do not hesitate to contact Charles lfft of my staff at (206) 764-6938 or email at char.les,h.ifft(a�,usace.army.mil. Sincerel , its Fisc er, P. E. Levee Safety Program Manager Chief, Soils Section STATE OF WASHINGTON DEPARTMENT OF ECOLOGY Northwest Regional Office • 3190 160th Ave SF • Bellevue, WA 98008-5452 • 425-649-7000 711 for Washington Relay Service - Persons with a speech disability can call 877-833-6341 March 5, 2013 Mark Clement Boeing Company 737 Logan Avenue N. Renton, WA 98055 Re: City of Renton Permit LUA12-000303, ECF, SM - Approved Marie Clement - Applicant Shoreline Substantial Development Permit (SDP) 1418. Dear Mark Clement: Ai.. of 00 *4, `o }4 On March 1, 2013, the Department of Ecology received notice that Renton approved your application for an SDP. Your permit is for replacement of the existing Boeing North Bridge within the shoreline jurisdiction of the Cedar River. By law, local governments must review all SDPs for compliance with: • The Shoreline Management Act (Chapter 90.58 RCI) • Ecology's Substantial Development Permit approval criteria (Chapter 173-27-150 WAC) • The Renton Local Shoreline Master Program Local governments, after reviewing SDPs for compliance, are required to submit them to Ecology. Your approved SDP has been received by Ecology. What Happens Neat? Before you begin activities authorized by this permit, the law requires you wait at least 21 days from March 1, 2013, the "date of filing". This waiting period allows anyone (including you) who disagrees with any aspect of this permit, to appeal the decision to the state Shorelines Hearings Board. You must wait for the conclusion of an appeal before you can begin the activities authorized by this permit. The Shorelines Hearings Board will notify you by letter if they receive an appeal. We recommend you contact the Shorelines Hearings Board before you begin permit activities to ensure no appeal has been received. They can be reached at (360) 664-9160 or http://www.eho.wa.gov/ o- CIO l` t Mark Clement March 5, 2013 2of2 If you want to appeal this decision, you can find appeal instructions (Chapter 461-08 WAC) at the Shorelines Hearings Board website above. They are also posted on the website of the Washington State Legislature at: http://apps.leg.wa.gov/wac. Other federal, state and local permits may be required in addition to this shoreline permit. If you have any questions about this letter, please contact Barbara Nightingale at (425) 644-4309. Sincerely, Barbara Nightingale, Regional Shoreline anner Shorelands and Environmental Assistance Program BN:cja cc: Vanessa Dolbee, Senior Planner, City of Renton Denis Law City of Mayor February 2$, 2013 Department of Community and Economic Development C.E."Chip"Vincent, Administrator State Department of Ecology Northwest Regional Office 3190 150th Ave. SE Bellevue, WA 98008-5452 SUBJECT: Shoreline Management Substantial Development Permit for Boeing North Bridge Replacement Project File No. LAND USE ACTION FILE NO.:LUA12-000303, ECF, SM Dear Sir or Madam: Enclosed is the Shoreline Substantial Development Permit for the above referenced project. The permit was issued by the City of Renton on February 28, 2013, A Determination of Non -Significance -Mitigated was issued by the City's Environmental Review Committee on February 25, 2013. The appeal -period will end March 15, 2013, no appeals of the threshold determination have been filed as of the date of this letter. We are filing this action with the Department of Ecology and the Attorney General per. WAC 173-14-090. Please review this permit and attachments and contact me at (425) 430-7314 if you have any questions or need additional information. Sincerely, Vanessa Dolbee Senior Planner Enclosures: AdmW5trative Decision cc: Copy of Master Application Project Narrative Notice of Application SEPA Checklist SEPA Determination SEPA Determination Mitigation Measures SEPA Determination Advisory Notes Revised JARPA Standard Stream Study Narrative and Habitat Data Report office of Attorney General Karen Water, Muck€eshoot Indian Tribe Fisheries Dept. Jennifer Henning, Current Planning Manager Boeing Corporation/Owner Mark Clement/Applicant/Contact Eddie Decarlo Foster/Party of Record Renton City Hall • 1055 South Grady Way . Renton, Washington 98057 . rentonwa.gov DEPARTMENT OF CO-----1UNITY City °f;, fI AND ECONOMIC DEVELOPMENT PLANNING DIVISION SHORELINE MANAGEMENT ACT OF 1971 PERMIT FOR SHORELINE MANAGEMENT EVALUATION FORM & DECISION r-- CONCU �E DATE DATE OF PERMIT ISSUANCE: February 28, 201.3 NAME INITIAUDATE LAND USE ACTION FILE NO.: LUA12-000303, ECF, SM DATE RECEIVED December 26, 2012 S 1 DATE OF PUBLIC NOTICE: January 23, 2013 Pursuant to Chapter 90.58 RCW, staff recommends that the City of Renton grant a Shoreline Substantial Development Permit. This action is proposed on the following application: PROJECT NAME: PROJECT MANAGER: OWNER: CONTACT/APPLICANT: PROJECT LOCATION: LEGAL DESCRIPTIONS: Renton Municipal Airport/Park Site: Boeing North Bridge Replacement Project Vanessa Dolbee, Senior Planner Boeing Corporation, 737 Logan Avenue N, Renton, WA 98055 City of Renton, 1055 South Grady Way, Renton WA, 98057 Mark Clement, 737 Logan Avenue N, Renton, WA 98055 Mouth of the Cedar River where it enters Lake Washington PORTION CW #2 LOCATED ON W BANK OF CEDAR RIVER IN E 1/2 OF SECTION 07-23-05 & MORE PARTICULARY DESCRIBED AS TRACTS 1 THRU 6 AS SHOWN ON CITY OF RENTON ENGINEER MAP B 92-50 DATED MAY 23, 1957 TGW BLOCK A & B OF LAKE WASHINGTON SHORE LANDS 3RD SUPL Renton Boeing Plan Site: POR OF E 1/2 OF SEC 7-23-05 LY ELY OF CWW #2 & NLY OF N 6TH ST IN SE 1/4 OF SEC LESS NP R/W LESS ST TGW VAC LOGAN ST LY NWLY OF LN 30 FT NWLY OF GOV MDR LN TGW 2ND CL SH LDS ADJ SUBJ TO TWO 20 FT R/W ESMTS & POR OF SE 1/4 OF SE 1/4 OF SEC BEG NXN S MGN OF N 6TH ST WITH W MGN LOGAN AVE TH SLY ALG SD ST 995.34 FT TH S 89-18-45 W TO ELY MGN CWW #2 TH N ALG SD MGN TO S MGN N 6TH ST TH E TO BEG LESS BEG. NW COR THOF TH SELY ALG WILY LN 328.75 FT TH N 89-45-45 E 366.34 FT TH N 00-14-15 W TO S MGN N 6TH ST DEPARTMENT OF CONALINITY ": City o� �o AND ECONOMIC DEVELOPMENT `; " F, PLANNING DIVISION SHORELINE MANAGEMENT ACT OF 1971 PERMIT FOR SHORELINE MANAGEMENT EVALUATION FORM & DECISION DATE OF PERMIT ISSUANCE: LAND USE ACTION FILE NO.: DATE RECEIVED DATE OF PUBLIC NOTICE: February 28, 2013 LUA12-000303, ECF, SM December 26, 2012 January 23, 2013 Pursuant to Chapter 90.58 RCW, staff recommends that the City of Renton grant a Shoreline Substantial Development Permit. This action is proposed on the following application: PROJECT NAME: PROJECT MANAGER: OWNER: CONTACT/APPLICANT: PROJECT LOCATION: LEGAL DESCRIPTIONS: Renton Municipal Airport/Park Site: Boeing North Bridge Replacement Project Vanessa Dolbee, Senior Planner Boeing Corporation, 737 Logan Avenue N, Renton, WA 98055 City of Menton, 1055 South Grady Way, Renton WA, 98057 Mark Clement, 737 Logan Avenue N, Benton, WA 98055 Mouth of the Cedar River where it enters Lake Washington PORTION CW #2 LOCATED ON W BANK OF CEDAR RIVER IN E 1/2 OF SECTION 07-23-05 & MORE PARTICULARY DESCRIBED AS TRACTS 1 THRU 6 AS SHOWN ON CITY OF RENTON ENGINEER MAP B 92-50 DATED MAY 23, 1957 TGW BLOCK A & B OF LAKE WASHINGTON SHORE LANDS 3RD SUPL Menton Boeing Pian Site: POR OF E 1/2 OF SEC 7-23-05 LY ELY OF CWW #2 & NLY OF N 6TH ST IN SE 1/4 OF SEC LESS NP R/W LESS ST TGW VAC LOGAN ST LY NWLY OF LN 30 FT NWLY OF GOV MDR LN TGW 2ND CL SH LDS ADJ SUBJ TO TWO 20 FT R/W ESMTS & POR OF SE 1/4 OF SE 1/4 OF SEC BEG NXN S MGN OF N 6TH ST WITH W MGN LOGAN AVE TH SLY ALG SD ST 995.34 FT TH S 89-18-45 W TO ELY MGN CWW #2 TH N ALG SD MGN TO S MGN N 6TH ST TH E TO BEG LESS BEG NW COR THOF TH SELY ALG WLY LN 328.75 FT TH N 89-45-45 E 366.34 FT TH N 00-14-15 W TO S MGN N 6TH ST City of Renton Deportment of Cam ity & Economic Development Shoreline Management Permit BOEING NORTH BRIDGE REPLACEMENT PROJECT LUA12-000303 ECF, 5M DATE OF PERMIT: February 28, 2013 Page 2 of 11 TH W TO BEG LESS 137.70 FT THOF TGW PORS OF NW 1/4 SEC 08-23-05 & SE 1/4 SEC 06-23-05 & SW 1/4 SEC 05-23-05 LY NWLY OF NP R/W & SWLY OF LN BEG NXN WLY EXT OF N LN OF GL 1 WITH W MGN SD R/W TH W 763.39 FT TH N 43-06-56 W 680.06 FT M/LTO INNER HARBOR LN TH S 46-52-27 W ALG SD LN 607.89 FT TO TPOB TH S 43-06-56 E 713.87 FT TH S 46-53-04 W 215 FT TH S 20-38-24 W TO NWLY MGN SD NP R/W SUBJ TO SD 20 FT ESMTS LESS BN OPER STRIP ADJ POR OF SELY LN IN SD SEC 08-23-05 LESS ST RD #7 TGW VAC LOGAN ST LY NLY OF SPUR TRACKS TGW BLK C LK WASH SH LDS 3RD SUPPL LESS POR FOR RD PER DEED 20060817000676 LESS POR PER DEED 20061212000338 Also see attached Exhibit. SEC-TWN-R: SEC 7 TWN 23N R 5E WITHIN THE SHORELINES OF: Cedar River, Reach A APPLICABLE MASTER PROGRAM: City of Renton PROPOSAL DESCRIPTION: The applicant is requesting a Shoreline Substantial Development Permit for the replacement of the North Boeing Bridge. The project would include the demolition of the existing bridge, construction and removal of a temporary trestle and the installation of a new bridge. The bridge is located in the Shoreline High Intensity overlay, within Reach A of the Cedar River immediately before the river enters Lake Washington. The project would include work on the following parcels: 0723059001, 0723059069, 0723059007 and 072305HYDR. In addition, the project would include work in three different zones beginning from the west, Renton Municipal Airport zoned IM, Cedar River Park zoned IH, and the Boeing manufacturing facility zoned UC -N2. The project would remove 14,670 SF of overwater coverage and the new bridge would result in 10,600 SF of overwater coverage. A mitigation plan including 8,500 SF of shoreline restoration has been proposed. The temporary trestle would be 6,880 SF and be located south of the existing bridge. The project would be located in the floodway and floodplain of the Cedar River and located in a seismic hazard area. Removal and replacement of sediment would result in approximately 15,550 CY of cut and fill. in addition, it is estimated that 23,775.4 SF of river substrate would be disturbed. FINDINGS Of FACT: 1. The project would include the demolition of the existing bridge, construction and removal of a temporary trestle and work platform and the installation of a 10,600 SF new bridge. 2. The proposed bridge replacement project is critical to the production of Boeing commercial airplanes in Renton. All aircraft assembled in the Renton factory must be transported across the bridge to the Renton Municipal Airport. There is no alternative means to transport aircraft from the factory to the airport. The loss of function of the bridge would disrupt production, resulting in substantial economic losses and impacts to employment. City of Renton Department of Corn 7ity & Economic Development Shoreline Management Permit BOEING NORTH BRIDGE REPLACEMENT PROJECT LUA12-000303 ECF, SM DATE OF PERMIT: February 28, 2013 Page 3 of 11 3. The existing bridge was built in the 1940's and has undergone various modifications and repairs over time. The new bridge will consist of steel plate girders with a precast concrete deck supported on drilled shafts for two piers in the Cedar River and by driven steel pipe piles on two piers located upland. 4. The project would require work below the Ordinary High Water Mark, in the substrate of the Cedar River. 5. The project would be located in the floodway and floodplain of the Cedar River and in a seismic hazard area. 6. Representatives from various city departments have reviewed the application materials to identify and address issues raised by the proposed development. These comments are contained in the official file, and the essence of the comments have been incorporated into the appropriate sections of this report and the Departmental Recommendation at the end of this report. 7. Roads are permitted outright in Table 4-3-090E1 Shoreline Use Table. 8. The following table contains project elements intended to comply with the SMP bulk and dimensional standards and policies, as outlined in RMC 4-3-090: Policy SSI -14. Shoreline use and development should be carried out in a manner that prevents or mitigates adverse impacts so that the resulting ecological condition does not become worse than the current condition. This means ensuring no net loss of ecological functions and processes in all development and use. Permitted uses should be designed and conducted to minimize, in so far as practical, any resultant damage to the ecology and environment (RCW 90.58.020). Shoreline ecological functions that should be protected include, but are not limited to, fish and wildlife habitat, food chain support, and water temperature maintenance. Shoreline processes that shall be protected include, but are not limited to, water flow; littoral drift; erosion and accretion; infiltration; ground water recharge and discharge; sediment delivery, transport, and storage; large woody debris recruitment; organic matter input; nutrient and pathogen removal; and stream channel formation/maintenance. City of Renton Department of Co, ity & Economic Development Shoreline Management Permit BOEING NORTH BRIDGE REPLACEMENT PROJECT LUA12-000303 ECF, SM DATE OF PERMIT: February 28, 2013 Page 4 of 11 Objective SH -E. Existing economic uses and activities on the shorelines should be recognized and economic uses or activities that are water -oriented should be encouraged and supported. Policy SH -18. All economic activities on the shoreline shall provide for no net loss of ecological functions during construction and operation. R"bEVELOPMENT STAWARmk.- .. . .......... ... ....... . . . . . . .... ........... . . . i . . .. . . ... . . .... ........ .. .Map:............. .. . The subject site is classified a"s-Shorolihe Hi gh"I r'AehsitV,'o'h the City of Renton Sh6.rio`lin"e'0`ve The a applicable. ..... ;tp,the . ..... following development stand irds"atie, ". 1. No Net Loss Required Shoreline use and development shall be carried out in a manner that prevents or mitigates adverse impacts to ensure no net loss of ecological functions and processes in all development and use. Permitted uses are designed and conducted to minimize, in so far as practical, any resultant damage to the ecology and environment (RCW 90.58,020). Shoreline ecological functions that shall be protected include, but are not limited to, fish and wildlife habitat, food chain support, and water temperature maintenance. Shoreline processes that shall be protected include, but are not limited to, water flow; erosion and accretion; infiltration; groundwater recharge and discharge; sediment delivery, transport, and storage; large woody debris recruitment; organic matter input; nutrient and pathogen removal; and stream channel formation/maintenance. 2. View Obstruction and Visual Quality View Corridors Required: Where commercial, industrial, multiple use, multi -family and/or multi -lot developments are proposed, primary structures shall provide for view corridors between buildings where views of the shoreline are available from public right-of-way or N/A trails. Staff Comment: The proposed bridge is not a primary structure and would not block any view corridors. Minimum Setbacks for Commercial Development Adjacent to Residential or Park Uses: All new or expanded commercial development adjacent to residential use and public parks shall provide fifteen feet (15') setbacks from adjacent properties to attenuate proximity impacts such as noise, light and glare, and may address scale and aesthetic impacts. Fencing or landscape areas may be required to provide a visual screen. Staff Comment: The temporary trestle would be closer than 15 feet to the Cedar River Park. In fact, the 737 wing would cross over the fence line into the park, when crossing the temporary trestle. The wing would crossover the fence in an area currently vegetated with shrubs. Some shrubs would be trimmed to lower their height to allow for wing clearance. The pruning of the shrubs are not anticipated to impact the existing shrubs. However, if Shrubs die in the City park as a result of the pruning or impacts from the 737 wing crossing, the applicant would be required to replace such shrubs. Staff recommends this as a condition of approval. Once construction is complete the project would not have impacts on City of Renton Deportment of Cor ity & Economic Development shoreline Management Permit BOEING NORTH BRIDGE REPLACEMENT PROJECT LUA12-000303 ECF, 5M DATE OF PERMIT: February 28, 2013 Page 5 of 11 the City pork system, as the planes would cross the new bridge more than 15 feet north of the property line. Lighting Requirements: Display and other exterior lighting shall be designed and operated so as to prevent glare, to avoid illuminating nearby properties used for noncommercial purposes, and to prevent hazards for public traffic. Methods of controlling spillover light include, but are not limited to, limits on the height of light structures, limits on light levels of fixtures, light shields, and screening. Reflected Lights to Be Limited: Building surfaces on or adjacent to the water shall employ materials that limit reflected light. Integration and Screening of Mechanical Equipment: Building mechanical equipment shall be incorporated into building architectural features, such as pitched roofs, to the maximum N/A extent feasible. Where mechanical equipment cannot be incorporated into architectural features, a visual screen shall be provided consistent with building exterior materials that obstructs views of such equipment. Visual Prominence of Freestanding Structures to Be Minimized: Facilities not incorporated N/A into buildings including fences, piers, poles, wires, lights, and other freestanding structures shall be designed to minimize visual prominence. Maximum Stair and Walkway Width: Stairs and walkways located within shoreline vegetated buffers shall not exceed four feet (4') in width; provided, that where ADA N/A requirements apply, such facilities may be increased to six feet (6') in width. Stairways shall conform to the existing topography to the extent feasible. 3. Community Disturbances: Noise, odors, night lighting, water and land traffic, and other structures and activities shall be considered in the design plans and their impacts avoided or mitigated. 4. Public Access Physical or visual access to shorelines shall be incorporated in all new development when the development would either generate a demand for one or more forms of such access, would impair existing legal access opportunities or rights, or is required to meet the specific policies and regulations of the Shoreline Master Program. Cedar River A: Public physical access from a trail parallel to the water should be provided if the Renton Municipal Airport redevelops in the future, balanced with goals of ecological restoration. 5. Building and Development Location —Shoreline orientation Shoreline developments shall locate the water -dependent, water -related, and water -enjoyment portions of their developments along the shoreline. Development and use shall be designed in a manner that directs land alteration to the least sensitive portions of the site to maximize vegetation conservation; City of Renton Department of Com ity & Economic Development Shoreline Management Permit BOEING NORTH BRIDGE REPLACEMENT PROJECT LUA12-000303 ECF, SM DATE OF PERMIT: February 28, 2013 Page 6 of 11 minimize impervious surfaces and runoff; protect riparian, nearshore and wetland habitats; protect wildlife and habitats; protect archaeological, historic and cultural resources; and preserve aesthetic values. Location of Development: Development and use shall be designed in a manner that directs land alteration to the least sensitive portions of the site. ✓ Staff Comment: The proposed new bridge would be located in the same location as the existing bridge, as such areas of impact are in the some location as past impact. Utilizing the some location allows limited, if any, new impacts beyond construction impacts. Minimization of Site Alteration: Development shall minimize site alteration in sites with substantial unaltered natural features by applying the following criteria: (a) Vehicle and pedestrian circulation systems shall be designed to limit clearing, grading, and alteration of topography and natural features. (b) Impervious surfacing for parking lot/space areas Shall be limited through the use of under -building parking or permeable surfaces where feasible. N/A (c) Utilities shall share roadway and driveway corridors and rights-of-way wherever feasible. (d) Development shall be located and designed to avoid the need for structural shoreline stabilization over the life of the development. Exceptions may be made for the limited instances where stabilization is necessary to protect allowed uses, particularly water - dependent uses, where no alternative locations are available and no net loss of ecological functions will result. Location for Accessory Development: Accessory development or use that does not require a shoreline location shall be located outside of shoreline jurisdiction unless such development is required to serve approved water -oriented uses and/or developments or unless otherwise allowed in a High Intensity designation. When sited within shoreline jurisdiction, uses and/or developments such as parking, service buildings or areas, access roads, utilities, ✓ signs and storage of materials shall be located inland away from the land/water interface and landward of water -oriented developments and/or other approved uses unless a location closer to the water is reasonably necessary. Staff Comment: The location of the bridge over the Cedar River is necessary for the continued operation of the Boeing manufacturing facility. Without a connection to the west side of the river the new manufactured planes would not be able to access the airport. Navigation and Recreation to Be Preserved: Shoreline uses shall not deprive other uses of reasonable access to navigable waters. Existing water -related recreation shall be preserved. Staff Comment: At some points during the construction phase of the project, the Cedar ✓ River would be completely closed to boat access. These closures would be temporary and public notification would be required. Once the project is completed, the new bridge would be supported by less piles, improving the access to navigable waters and water -related recreation. City of Renton Deportment of Cor ity & Economic Development Shoreline Management Permit BOEING NORTH BRIDGE REPLACEMENT PROJECT LUA1Z-000303 ECF, 5M DATE OF PERMIT: February 28, 2013 Page 7 of 11 6. Standards for Density, Setbacks, and Height Setbacks and buffers from the OHWM: For non -water oriented uses a 100 foot setback is N/A required from the OHWM. Vegetation Conservation Buffer: 100 feet. Cedar River Reach A Standard: Enhancement of native riparian vegetation shall be implemented as part of park management, balanced with needs of flood control levees and opportunities to provide public visual and physical access to the shoreline. Staff Comment: The site where the new bridge is proposed would be considered to be a non -conforming site and would therefore, be subject to the standards of RMC 4-10-095 Partial Shoreline Master Program Non -Conforming Uses, Activities, Structures, and Sites. See Compliance analysis below under Section 8. However, the project would provide improvements in the shoreline vegetation as mitigation for project impacts. The applicant has proposed to restore a total of 8,500 SF of shoreline (260 linear feet) along both banks, including a total 2,529 square feet of native riparian vegetation. The vegetation proposed to be planted would be limited to low -growing native shrubs and groundcover, to reduce impacts to aviation operations at the Renton Municipal Airport and avoid interference with the transport of Boeing aircraft over the replacement bridge. Building Height — Maximum: In water — 35 ft. Within 100 feet of OHWM — 35 ft. More than 100 feet from the OHWM — 35 ft. Height up to that established in chapter 4-2 RMC, Zoning Districts — Uses and Standards, may be allowed for non -water -dependent uses in the following reaches: Lake Washington Reaches C, H, I, and J; Cedar River Reaches A, B, and C; Black River Reach A; May Creek Reach B; and Springbrook Creek Reaches B, C, and D: N/A For buildings landward of one hundred feet (100') from OHWM, the maximum building height shall be defined by a maximum allowable building height envelope that shall: i. Begin along a line lying parallel to and one hundred feet (100') from OHWM at a height of either thirty five feet (35') or one half (1/2) the maximum height allowed in the underlying zone, whichever is greater; and ii. Have an upward, landward transition at a slope of one vertical to one horizontal from the beginning height either (a) until the line at which the maximum height allowed in the underlying zoning in chapter 4-2 RMC is reached (from which line the height envelope shall extend landward at the maximum height allowed in the underlying zoning), or (b) to the end of shoreline jurisdiction, whichever comes first. Impervious area within the buffer/setback: 5% Staff Comment: The project would not result in an increase in impervious surface area. The City of Renton Department of Com ity & Economic Development Shoreline Management Permit BOEING NORTH BRIDGE REPLACEMENT PROJECT LUA12-000303 ECF, SM DATE OF PERMIT: February 28, 2013 Page 8 of 11 existing aprons on each side of the bridge would be removed resulting in the removal of approximately 7,470 square feet of impervious surface area. Overall there would be a net reduction of 6,060 square feet of impervious surface. Impervious area within 100 feet of the OHWM: 50% Vol Footnote 11: No limit for the Renton Municipal Airport. Staff Comment: The project would not result in an increase in impervious service area. 7. Use Regulations — Transportation: a. General Standards: New and expanded transportation facilities shall be designed to achieve no net loss of ecological functions within the shoreline. To the maximum extent feasible the following standards shall be applied to all transportation projects and facilities: Facilities shall be located outside of the shoreline jurisdiction and as far from the land/water interface as possible. Expansion of existing transportation facilities shall include analysis of system options that assess the potential for alternative routes outside shoreline jurisdiction or set back further from the land/water interface. Staff Comment: There is no other feasible location for the bridge crossing. Facilities shall be located and designed to avoid significant natural, historical, archaeological, or cultural sites, and mitigate unavoidable impacts. J Staff Comment: The project includes a mitigation plan, which would result in no net loss of ecological functions within the shoreline. See the Standard Stream Study !Narrative and Habitat Data Report. Facilities shall be designed and maintained to prevent soil erosion, to permit natural movement of groundwater, and not adversely affect water quality or aquatic plants and animals over the life of the facility. All debris and other waste materials from construction shall be disposed of in such a way as to prevent their entry by erosion into any water body and shall be specified in submittal materials. Facilities shall avoid the need for shoreline protection. Facilities shall allow passage of flood waters, fish passage, and wildlife movement by using bridges with the longest span feasible or when bridges are not feasible, culverts and other features that provide for these functions. Facilities shall be designed to accommodate as many compatible uses as feasible, including, V but not limited to: utilities, viewpoint, public access, or trails. b. Roads: City of Renton Department of Cam ity & Economic Development Shoreline Management Permit BOEING NORTH BRIDGE REPLACEMENT PROJECT LUA12-000303 ECF, SM DATE OF PERMIT: February 28, 2013 Page 9 of 11 Development of this project shall be undertaken pursuant to the following terms and conditions: 1. If shrubs die in the Cedar River park as a result of the pruning or impacts from the 737 wing crossing, the applicant shall replace such shrubs with comparable plantings, approved by the Current Planning Project Manager. New public or private roads and driveways shall be located inland from the land/water interface, preferably out of the shoreline, unless: (a) Perpendicular water crossings are required for access to authorized uses consistent with the Shoreline Master Program; or (b) Facilities are primarily oriented to pedestrian and nonmotorized use and provide an opportunity for a substantial number of people to enjoy shoreline areas, and are consistent with policies and regulations for ecological protection. Staff Comment: The proposed new bridge would cross the Cedar River perpendicular to the water. The new bridge is required for access to the existing Renton Municipal Airport, which is an authorized Shoreline Use under its existing condition. Road locations shall be planned to fit the topography, where possible, in order that minimum alteration of existing natural conditions will be necessary. RCW 35.87.130 prohibits vacation of any right-of-way that abuts freshwater except for port, recreational, educational or industrial purposes. Therefore, development, abandonment, or alteration of undeveloped road ends within Shoreline Master Program jurisdiction is prohibited unless an alternate use is approved in accordance with the Shoreline Master Program. 8. Non -Conforming Site, Partial and Full Compliance, Alteration of an Existing Structure or Site: For non -single-family development: Alterations without expansion that does not change the building footprint or increase impervious surface, no site changes are required. Staff Comment: The proposed North Boeing Bridge would remove the existing 32 -foot wide bridge and construct a wider 50 foot bridge to span the Cedar River. The existing aprons on each side of the bridge would be removed resulting in the removal of approximately 7,470 square feet of impervious surface area. Overall, at project completion the removal of a total of approximately 4,000 SF of overwater structure from the near shore area along each bank of the river would be provided. As such, despite the wider 5D foot bridge, the project would not expand the overwater coverage or increase the impervious surface coverage. In fact the new bridge would improve the riparian area by providing restoration of portions of the river banks. No site changes would be required. Development of this project shall be undertaken pursuant to the following terms and conditions: 1. If shrubs die in the Cedar River park as a result of the pruning or impacts from the 737 wing crossing, the applicant shall replace such shrubs with comparable plantings, approved by the Current Planning Project Manager. City of Renton Department of Corm ity & Economic Development Shoreline Management Permit BOEING NORTH BRIDGE REPLACEMENT PROJECT LUA12-000303 ECF, SM DATE OF PERMIT: February 28, 2013 Page 10 of 11 2. The applicant shall comply with the mitigation and monitoring plan identified in the Standard Stream Study Narrative and Habitat Data Report, prepared by AMEC, dated December 2012. This Permit is granted pursuant to the Shoreline Management Action of 1971 and pursuant to the following: 1. The issuance of a license under the Shoreline Management Act of 1971 shall not release the applicant from compliance with federal, state, and other permit requirements. 2. This permit may be rescinded pursuant to Section 14(7) of the Shoreline Management Act of 1971 in the event the permittee fails to comply with any conditions) hereof. 3. Construction permits shall not be issued until twenty-one (21) days after approval by the Washington State Department of Ecology or until any review proceedings initiated within this twenty-one (21) day review period have been completed - DATE OF DECISION ON LAND USE ACTION: SIGNATURE. L1 C. E. "Chip" Vincent, Administrator Department of Community & Economic Development ote APPEALS: Appeals of Shoreline Substantial Development Permit issuance must be made directly to the Shorelines Hearings Board. Appeals are made by filing a request in writing within the twenty-one (21) days of receipt of the final order and concurrently filing copies of such request with the Washington State Department of Ecology and the Attorney General's office as provided in section 18(1) of the Shorelines Management Act of 1971. All copies of appeal notices shall also be filed with the City of Renton Planning Division and the City Clerk's office. RECONSIDERATION: Within 14 days of the decision date, any party may request that the decision be reopened by the approval body. The approval body may modify his decision if material evidence not readily discoverable prior to the original decision is found or if he finds there was misrepresentation of fact. After review of the reconsideration request, if the approval body finds sufficient evidence to amend the original decision, there will be no further extension of the appeal period. Any person wishing to take further action must file a formal appeal within the 14 -day appeal time frame. EXPIRATION: Unless a different time period is specified in the shoreline permit as authorized by RCW 90.58.143 and subsection J1 of RMC 4-9-190, construction activities, or a use or activity, for which a permit has been granted pursuant to this Master Program must be commenced within two (2) years of the effective date of a shoreline permit, or the shoreline City of Renton Deportment of Com ity & Economic Development Shoreline Management Permit BOEING NORTH BRIDGE REPLACEMENT PROJECT LUA12-000303 ECF, 5M DATE OF PERMIT: February 28, 2013 Page 11 of 11 permit shall terminate, and a new permit shall be necessary. However, the Planning Division may authorize a single extension for a period not to exceed one year based on reasonable factors, if a request for extension has been filed with the Planning Division before the expiration date, and notice of the proposed extension is given to parties of record and the Washington State Department of Ecology. DEFINITION OF COMMENCEMENT OF CONSTRUCTION ACTIVITIES: the construction applications must be submitted, permits must be issued, and foundation inspections must be completed before the end of the two (2) year period. Ex h i bits/Atta ch me nts: Property Ownership Exhibit Boeing Commercial Airplanes Plan Set, 16 Sheets cc: Attorney General's Office Karen Walter, Muckleshoot Indian Tribe Fisheries Dept. 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DETERMINATION ISSUANCE OF A DETERMINATION OF NON -SIGNIFICANCE- MITIGATED {DNS -M} POSTED TO NOTIFY INTERESTED PERSONS OF AN ENVIRONMENTAL ACTION PRPlECf NAME: Boeing North Bridge Replacement Project PROIELT NUMBER: LDA32-000303. ECF, SM LOCATION: Mouth or Lad- RNerwhera It enters Lake Wishinginn DESCRIPTION: The applicant Is req—ting SEPA E-1—merral Review and a Shoreline S.ketantlal development PII tot the r*of ... ment of the North Boeing Bridge. The protea would include the de..IIII n M sheealsting bridge, construction and removal of a temporary trestle and I Installef on of a new is 61 The arid'. la located In the Shoreline High Intensity overlay, wRhln Reach A of the Cedar Rlver Immedhtely Shore the Nyer enters take Washington. The project would Indwe work an the following paroaho 0723059001, 072359069, 072301 and 972305HYDR. In addidon the protea would Include work In thee. different zones beginning from the west, Renton Munidpal Alrpnrt zoned IM, Cedar River Park caned M, and the Boeing rn—famine faculty zoned UII The project would remove 14,670 Sr of snra—ter coa,rage and the new bridge would result In 10,600 SF of overwat.r onweall A mitlgatlon plan Including 8,500 SF of sh—Ilre reatoratlon Sea been proposed. The temporary trestle would be 5,BBD 51' and be heated south of the existing brldge. The project would be located In the lime waa and 0oodpl.ln often, Cedar River and located In a seismic hazard area. Removal and replacement of sediment would result in approeimately 15,550 EY of rut and FII. In addition, R a eatimat,d that 23,775.45F of rlver substrate would ae disturbed. Th, appikant pro0ded a stream study and habitat report, geosechnlol report, a no rlse analysis, and a blololI assessment. THE CITY OF RENTON ENVIRONMENTAL REVIEW COMMITTEE (ERG HAS DETERMINED THAT THE FROPOSED ACTION DOES NOT HAVE A SIGNIFICANT ADVERSE IMPACT ON THE ENVIRONMENT. Appeal of the environmental determination must be Fled in writing on or berore 5:00 p.m. on March 15, 2013, together with the required fee with: Hearing Examiner, Gly of Renton, 7055 South Grady Way, Renton, WA 98057. Appeals to the Examiner are governed by city of PMC 4-8-110 and information regarding the appeal process may be obtained from the Renton Oty Clerla's Office, 1425) 430.6510. IF lh1 ENVIRONMENTAL DETERMINATION 15 APPEALED, A PUBLIC HEARING WILL BE SET AND ALL PAR7IES NOTIFIED. FDR FURTHER INFORMATION, PLEASE CONTACT THE CITY OF RENTON, DEPARTMENT OF COMMUNITY & ECONOMIC DEVELOPMENT AT (425)430-7290. OO NOT REMOVE THIS NOTICE WITHOUT PROPER AUTHORIZATION PLEASE INCLUDE THE PROJECT NUMBER WHEN CALLING FOR PROPER FILE IDENTIFICATION. CERTIFICATION I Cheta lbe-hereby certify that copies of the above document were posted in�_ conspicuous places or nearby the desc�bed property on Date: �5 I / L—� Signed: STATE OF WASHINGTON ) ) SS COUNTY OF KING j I certify that I know or have satisfactory evidence that . Vont-5s ci L,\\neP signed this instrument and acknowledged it to be his/her/their free and voluntary act for the uses and purposes mentioned in the instrument. Da`ec��v�` � F? NON E ` ONe u,t iii xryj �hy if n rO ;. r _ Notary Publid in and for the State of Washington Notary (Print): �\ C (.I-Ekr ^ IOU sv "�= 2 My appointment expires: q rF Of '$ CITY OF RENTON DEPARTMENT OF COMMUNITY & ECONOMIC DEVELOPMENT - PLANNING DIVISION AFFIDAVIT OF SERVICE BY MAILING On the 28th day of February, 2013, 1 deposited in the mails of the United States, a sealed envelope containing ERC Determination & Shoreline Substantial Development Permit documents. This information was sent to: Name Representing Agencies See Attached Mark Clement, Boeing Company Owner/Applicant/Contact Eddie DeCarlo Foster Party of Record State Attorney - Shoreline Permit only Agency DOE - NW Division - Shoreline Permit only Agency �`,`���.....sti114iIf Ili (Signature of Sender): .L/+� �Q Ce����i� . "s. STATE OF WASHINGTON ) ;U s ) SS COUNTY OF KING 1 certify that I know or have satisfactory evidence that Stacy M. Tucker x'41, OP WAgO;R�`` signed this instrument and acknowledged it to be his/her/their free and voluntary act for thelu�`��t�a purposes mentioned in the instrument. Dated: Notary Puglic in and for the State of Washington Notary (Print): It ,1 6 T ; _ My appointment expires;. -f'{, -2.'? i` Project Name: Boeing North Bridge Replacement Project Project Number: LUA12-000303, ECF template - affidavit of service by mailing AGENCY (DOE) LETTER MAILING (ERC DETERMINATIONS) Dept. of Ecology ** WDFW - Larry Fisher* Muckleshoot Indian Tribe Fisheries Dept. Environmental Review Section 1775 12th Ave. NW Suite 201 Attn: Karen Walter or SEPA Reviewer PO Box 47703 Issaquah, WA 98027 39015-172 nd Avenue SE Olympia, WA 98504-7703 Auburn, WA 98092 WSDOT Northwest Region * Duwamish Tribal Office * Muckleshoot Cultural Resources Program Attn: Ramin Pazooki 4717 W Marginal Way SW Attn: Ms Melissa Calvert King Area Dev. Serv., MS -240 Seattle, WA 98106-1514 39015 172nd Avenue SE PO Box 330310 Auburn, WA 98092-9763 Seattle, WA 98133.9710 US Army Corp. of Engineers * KC Wastewater Treatment Division * Office of Archaeology & Historic Preservation* Seattle District Office Environmental Planning Supervisor Attn: Gretchen Kaehler Attn: SEPA Reviewer Ms. Shirley Marroquin PO Box 48343 PO Box C-3755 201 S. Jackson ST, MS KSC-NR-050 Olympia, WA 98504-8343 Seattle, WA 98124 Seattle, WA 98104-3855 Boyd Powers * Depart. of Natural Resources PO Sox 47015 Olympia, WA 98504-7015 KC Dev. & Environmental Serv. City of Newcastle City of Kent Attn: SEPA Section Attn: Steve Roberge Attn: Mr. Fred 5atterstrom, AICP 900 Oakesdale Ave. SW Director of Community Development Acting Community Dev. Director Renton, WA 98055-1219 13020 Newcastle Way 220 Fourth Avenue South Newcastle, WA 98059 Kent, WA 98032-5895 Metro Transit Puget Sound Energy City of Tukwila Senior Environmental Planner Municipal Liaison Manager Steve Lancaster, Responsible Official Gary Kriedt Joe Jainga 6200 Southcenter Blvd. 201 South Jackson Street KSC-TR-0431 PO Box 90868, MS: XRD-01W Tukwila, WA 98188 Seattle, WA 98104-3856 Bellevue, WA 98009-0868 Seattle Public Utilities Real Estate Services Attn: SEPA Coordinator 700 Fifth Avenue, Suite 4900 PO Box 34018 Seattle, WA 98124-4018 *Note: If the Notice of Application states that it is an "Optional DNS", the marked agencies and cities will need to be sent a copy of the Environmental Checklist, Site Plan PMT, and the Notice of Application. **Department of Ecology is emailed a copy of the Environmental Checklist, Site Pian PMT, & Notice to the following email address: sepaunit@ecy.wa.gov template - affidavit of service by mailing City of �t OF ENVIRONMENTAL DETERMINATION ISSUANCE OF A DETERMINATION OF NON -SIGNIFICANCE - MITIGATED (DNS -M) POSTED TO NOTIFY INTERESTED PERSONS OF AN ENVIRONMENTAL ACTION PROJECT NAME: Boeing North Bridge Replacement Project PROJECT NUMBER: LUA12-000303, ECF, SM LOCATION: Mouth of Cedar River where it enters Lake Washington DESCRIPTION: The applicant is requesting SEPA Environmental Review and a Shoreline Substantial Development Permit for the replacement of the North Boeing Bridge. The project would include the demolition of the existing bridge, construction and removal of a temporary trestle and the installation of a new bridge. The bridge is located in the Shoreline High Intensity overlay, within Reach A of the Cedar River immediately before the river enters Lake Washington, The project would include work an the following parcels: 0723059001, 0723059069, 0723059007 and 072305HYDR_ In addition the project would include work in three different zones beginning from the west, Renton Municipal Airport zoned IM, Cedar River Park, zoned IN, and the Boeing manufacturing facility zoned UC -N2. The project would remove 14,670 SF of overwater coverage and the new bridge would result in 10,600 SF of overwater coverage. A mitigation plan including 8,500 SF of shoreline restoration has been proposed. The temporary trestle would be 6,880 SF and be located south of the existing bridge. The project would be located in the floodway and floodplain of the Cedar River and located in a seismic hazard area. Removal and replacement of sediment would result in approximately 15,550 CY of cut and fill. In addltlon, it Is estimated that 23,775.4 SF of river substrate would be disturbed. The applicant provided a stream study and habitat report, geotechnical report, a no rise analysis, and a biological assessment. THE CITY OF RENTON ENVIRONMENTAL REVIEW COMMITTEE (ERC) HAS DETERMINED THAT THE PROPOSED ACTION DOES NOT HAVE A SIGNIFICANT ADVERSE IMPACT ON THE ENVIRONMENT. Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on March 15, 2013, together with the required fee with: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057. Appeals to the Examiner are governed by City of RMC 4-8-110 and information regarding the appeal process may be obtained from the Renton City Clerk's Office, (425) 430-6510. IF THE ENVIRONMENTAL DETERMINATION IS APPEALED, A PUBLIC HEARING WILL BE SET AND ALL PARTIES NOTIFIED. FOR FURTHER INFORMATION, PLEASE CONTACTTHE CITY OF RENTON, DEPARTMENT OF COMMUNITY & ECONOMIC DEVELOPMENTAT (425) 430-7200. DO NOT REMOVE THIS NOTICE WITHOUT PROPER AUTHORIZATION PLEASE INCLUDE THE PROJECT NUMBER WHEN CALLING FOR PROPER FILE IDENTIFICATION. Denis Law City of Mayor k r�,Vo . February 28, 2013 Department of Community and Economic Development C.E."Chip"Vincent, Administrator Mark Clement Boeing Company 737 Logan Avenue N Renton, WA 98057 SUBJECT: ENVIRONMENTAL SEPA THRESHOLD DETERMINATION Boeing North Bridge Replacement Project, LUA12-000303, ECF Dear Mr. Clement: This letter is written on behalf of the Environmental Review Committee (ERC) to advise you that they have completed their review of the subject project and have issued a threshold Determination of Nan -Significance -Mitigated with Mitigation Measures. Please refer to the enclosed ERC Report, for a list of the Mitigation Measures. Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on March 15, 2013, together with the required fee with: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057. Appeals to the Examiner are governed by RMC 4-8-11.0 and information regarding the appeal process may be obtained from the City Clerk's Office, (425) 430-651.0. If the Environmental Determination is appealed, a public hearing date will be set and all parties notified. If you have any further questions, please call me at (425) 430-7219.. For the Environmental Review Committee, tx,,�—D Otbe-a--. Vanessa Dolbee Senior Planner Enclosure cc: Eddie DeCario Foster/ Party(ies) of Record Renton City Hall . 1055 South Grady Way • Renton, Washington 98057 . rentonwa.gov Washington State Department of Ecology Environmental Review Section PO Box 47703 Olympia, WA 98504-7703 Subject: ENVIRONMENTAL (SEPA) THRESHOLD DETERMINATION Transmitted herewith is a copy of the Environmental Determination for the following project reviewed by the Environmental Review Committee (ERC) on February 25, 2013: SEPA DETERMINATION: Determination of Non -Significance Mitigated (DNSM) PROJECT NAME: Boeing North Bridge Replacement Project PROJECT NUMBER: LUA12-000303, ECF Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on March 15, 2013, together with the required fee with: Dearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057. Appeals to the Examiner are governed by RMC 4-8-110 and information regarding the appeal process may be obtained from the City Clerk's Office, (425) 430-6510. Please refer to the enclosed Notice of Environmental Determination for complete details. If you have questions, please call me at (425) 430-7314. For the Environmental Review Committee, r�,.,-Dclbe, Vanessa DOlbee Senior Planner Enclosure cc: King County Wastewater Treatment Division Rarnin Pazooki, WSDOT, NW Region Boyd Powers, Department of Natural Resources Larry Fisher, WDFW Karen Walter, Fisheries, Muckleshoot Indian Tribe Duwamish Tribal Office Melissa Calvert, Muckleshoot Cultural Resources Program U5 Army Corp. of Engineers Gretchen Kaehler, Office of Archaeology & Historic Preservation Renton City Hall 0 1055 South Grady Way 0 Renton, Washington 98057 • rentonwa.gov DEPARTMENT OF COMMUNITY D ctvof .{\1 AND ECONOMIC DEVELOPMENT, ., DETERMINATION OF NONSIGNIFICANCE -MITIGATED (DNSM) MITIGATION MEASURES AND ADVISORY NOTES PROJECT NUMBER: LUA12-000303, EGF, SM APPLICANT: Mark Clement, Boeing Company PROJECT NAME: Boeing North Bridge Replacement Project PROJECT DESCRIPTION: The applicant is requesting SEPA Environmental Review and a Shoreline Substantial Development Permit for the replacement of the North Boeing Bridge. The project would include the demolition of the existing bridge, construction and removal of a temporary trestle and the installation of a new bridge. The bridge is located in the Shoreline High Intensity overlay, within Reach A of the Cedar River immediately before the river enters Lake Washington. PROJECT LOCATION: Mouth of the Cedar River where it enters Lake Washington LEAD AGENCY: The City of Renton Department of Community & Economic Development Planning Division MITIGATION MEASURES: 1. The applicant shall comply with the recommendations included in the Geotechnical Engineering Study prepared by S&EE, dated May 17, 2012. 2. The applicant shall comply withal[ conditions of approval included in the Hydraulic Project Approval (HPA) and the Army Corps Section 10 Authorization. 3. The applicant shall comply with the recommendations included in the Standard Stream Study Narrative and Habitat Data Report, prepared byAMEC Environment & Infrastructure, Inc., dated December 2012. 4. Boeing and/or their construction contractor shall coordinate with the City's Surface Water Division on the timing of their proposed bridge final restoration and pile cap removal. A. To avoid impacting the proposed planting and irrigation components of the project; in 2015 or in the future, Boeing shall construct an access roadway immediately upstream of the proposed west bank planting area to the Cedar River by revising the slope down to the river and removing a portion of the old wood bulkhead. The access roadway shall be 12 feet wide and constructed of pervious material that can support contractors' equipment, Design of the access shall be reviewed and approved by the Surface Water Division, prior to construction permit issuance. B. Alternatively, Boeing could choose to pay a fee -in -lieu to the Vegetation Conservation Fund, identified in the City's SMP for mitigation in other locations along the Cedar River and remove a portion of the proposed shoreline landscaping area providing an alternative for dredging. if the fee -in -lieu option is utilized, either the amount paid shall be identified in the required federal permits or such amount shall be reviewed and approved by the City of Renton Department of Community and Economic Development. 5. A Memorandum of Agreement (MOA) shall be completed between the Boeing Company and the City of Renton granting the City the right to access the proposed new North Boeing Bridge to conduct future maintenance dredging operation from, under and around the bridge. The MOA shall be completed and signed prior to construction permit issuance. 6. Access shall remain open to the Boat House and pier during construction, temporary closures similar to the current operating practice today are acceptable. A sign shall be posted at the entrance of the trail access notifying the public of anticipated temporary closures, and for what duration access would be closed and/or limited. Such sign shall be posted and updated throughout the construction process. 7. If closures of the Cedar River are expected, a schedule shall be provided to the City prior to construction permit issuance. The closure schedule shall be provided to the City of Renton Community Services Department, Park and Golf Course Director. A notice shall be posted near the non -motorized boat launch with a closure schedule to notify any recreational boaters of the closure schedule. 8. A boater's safety plan shall be provided for review and approval by the Community Services Department, prior to construction permit issuance. 9. All truck hauling routes shall access the site through the Renton Boeing Plant site and shall not use Riverside Drive, ADIVISORY NOTES: The following notes are supplemental information provided in conjunction with the administrative land use action. Because these notes are provided as information only, they are not subject to the appeal process for the land use actions. Planning: 1. RMC section 4-4-030.C.2 limits haul hours between 8:30 am to 3:30 pm, Monday through Friday unless otherwise approved by the Development Services Division. 2. Commercial, multi -family, new single family and other nonresidential construction activities shall be restricted to the hours between seven o'clock (7:00) a.m. and eight o'clock (8:00) p.m., Monday through Friday. Work on Saturdays shall be restricted to the hours between nine o'clock (9:00) a.m. and eight o'clock (8:00) p.m. No work shall be permitted on Sundays. ERC Mitigation Measures and Advisory Notes Page 2 of 3 Plan Review: 1. Erosion control shall comply with the 2009 King County Surface Water Manual. 2. City code requires compliance with the Critical Area Ordinance. Community Services: 1. Any damaged plants in the park shall be replaced. 2. No material shall be stored on the Cedar River Trail park property. 3. Contractor staging area shall be on the Boeing property. Airport: A "7460-1 Obstruction to Airspace form" shall be completed for the project. ERC Mitigation Measures and Advisory Notes Page 3 of 3 DEPARTMENT OF COMMUNITY D Gt` of AND ECONOMIC DEVELOPMENTj�� ENVIRONMENTAL (SEPA) DETERMINATION OF NON -SIGNIFICANCE - MITIGATED (DNS -M) PROJECT NUMBER: LUA12-000303, ECF, SM APPLICANT: Mark Clement, Boeing Company PROJECT NAME: North Boeing Bridge Replacement Project PROJECT DESCRIPTION: The applicant is requesting SEPA Environmental Review and a Shoreline Substantial Development Permit for the replacement of the North Boeing Bridge. The project would include the demolition of the existing bridge, construction and removal of a temporary trestle and the installation of a new bridge. The bridge is located in the Shoreline High Intensity overlay, within Reach A of the Cedar River immediately before the river enters Lake Washington. PROJECT LOCATION: Mouth of the Cedar River where it enters Lake Washington LEAD AGENCY: City of Renton Environmental Review Committee Department of Community & Economic Development The City of Renton Environmental Review Committee has determined that it does not have a probable significant adverse impact on the environment. An Environmental Impact Statement (EIS) is not required under RCW 43,21C.030(2)(c). Conditions were imposed as mitigation measures by the Environmental Review Committee under their authority of Section 4-9-070D Renton Municipal Code. These conditions are necessary to mitigate environmental impacts identified during the environmental review process. Because other agencies of jurisdiction may be involved, the lead agency will not act on this proposal for fourteen (14) days. Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on March 15, 2013. Appeals must be filed in writing together with the required fee with: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057. Appeals to the Examiner are governed by RMC 4-8-110 and more information may be obtained from the Renton City Clerk's Office, (425) 430-6510. PUBLICATION DATE: March 1, 2013 DATE OF DECISION: February 25, 2013 SIGNATURES: Gregg Zimmerman, Administrator Mark Peterson, Administrator Public Works Department Date Fire & Emergency Services Date --A 21 �f, (�7 7- Ka (.1 Terry Higashiyama, Administrator C.E. "Chip" Vincent, Administrator Community Services Department Date Department of Community & Date Economic Development DEPARTMENT OF COMMUNITYD r cltyOt'-;� AND ECONOMIC DEVELOPMEN.760 C ENVIRONMENTAL REVIEW COMMITTEE MEETING AGENDA TO: Gregg Zimmerman, Public Works Administrator Terry Higashiya ma, Community Services Administrator Mark Peterson, Fire & Emergency Services Administrator C.E. "Chip" Vincent, CED Administrator FROM: Jennifer Henning, Current Planning Manager MEETING DATE: Monday, February 25, 2013 TIME: 3:00 p.m. LOCATION: Sixth Floor Conference Room #620 North Boeing Bridge Replacement Project (Dolbee) LUA12-000303, ECF, SM Location: Mouth of the Cedar River where it enters Lake Washington. Description: The applicant is requesting SEPA Environmental Review and a Shoreline Substantial Development Permit for the replacement of the North Boeing Bridge. The project would include the demolition of the existing bridge, construction and removal of a temporary trestle and the installation of a new bridge. The bridge is located in the Shoreline High Intensity overlay, within Reach A of the Cedar River immediately before the river enters Lake Washington. cc: D. Law, Mayor J. Covington, Chief Administrative Officer S. Dale Estey, CED Director D. Jacobson, Deputy PW Administrator - Transportation N. Watts, Development Services Director L. Warren, City Attorney I Phil Olbrechts, Hearing Examiner D. Pargas, Assistant Fire Marshal® J. Medzegian, Council DEPARTMENT OF COMMUNE i,Y City of AND ECONOMIC DEVELOPMENT I ."Ar— ENVIRONMENTAL r ENVIRONMENTAL REVIEW COMMITTEE REPORT ERC MEETING DATE: February 25, 2013 Project Name: Boeing North Bridge Replacement Project Project Number. LUA12-000303, ECF, SM Project Manager: Vanessa Dolbee, Senior Planner Owner: Boeing Corporation, 737 Logan Ave. N, Renton WA, 98055 City of Renton, 1055 South Grady Way, Renton WA, 98057 Applicant/Contact: Mark Clement, Boeing Company, 737 Logan Ave. N, Renton, WA 98055 Project Location: Mouth of the Cedar River where it enters Lake Washington Project Summary: The applicant is requesting SEPA Environmental Review and a Shoreline Substantial Development Permit for the replacement of the North Boeing Bridge. The project would include the demolition of the existing bridge, construction and removal of a temporary trestle and the installation of a new bridge. The bridge is located in the Shoreline High Intensity overlay, within Reach A of the Cedar River immediately before the river enters Lake Washington. The project would include work on the following parcels: 0723059001, 0723059069, 0723059007 and 072305HYDR. In addition the project would include work in three different zones beginning from the west, Renton Municipal Airport zoned IM, Cedar River Park, zoned IH, and the Boeing manufacturing facility zoned UC -N2. The project would remove 14,670 SF of overwater coverage and the new bridge would result in 10,600 SF of overwater coverage. A mitigation plan including 8,500 SF of shoreline restoration has been proposed. The temporary trestle would be 6,880 SF and be located south of the existing bridge. The project would be located in the floodway and floodplain of the Cedar River and located in a seismic hazard area. Removal and replacement of sediment would result in approximately 15,550 CY of cut and fill. In addition, it is estimated that 23,775.4 SF of river substrate would be disturbed. The applicant provided a stream study and habitat report, geotechnical report, a no rise analysis, and a biological assessment. Exist. Bldg. Area SF: 14,670 SF of Proposed New Bldg. Area (footprint): 10,600 SF of over overwater Proposed New Bldg. Area (gross): water coverage coverage Site Area: 37,175 SF, area Total Building Area GSF: 10,600 SF of work STAFF Staff Recommends that the Environmental Review Committee issue a RECOMMENDATION: Determination of Non -Significance - Mitigated (DNS -M). ERC Report12-000303.docx City of Renton Department of Community & amic Development vironmental Review Committee Report BOEING NORTH BRIDGE REPLACMENT PRA LUA12-000303, ECF, SM Report of February 25, 2013 Page 2 of 14 Project Location Map ERC Reportl2-000303. docx City of Renton Department of Community & . nomic Development-nvironmentol Review Committee Report BOEING NORTH BRIDGE REPLACMENT PROJECT LLIA12-000303, ECF, SM Report of February 25, 2013 Page 3 of 14 PART ONE: PROJECT DESCRIPTION / BACKGROUND The applicant is requesting SEPA Environmental Review and a Shoreline Substantial Development Permit for the replacement of the North Boeing Bridge. The project would include the demolition of the existing bridge, construction and removal of a temporary trestle, installation and removal of temporary work platforms and the installation of a new bridge. The project would remove 14,670 SF of overwater coverage and the new bridge would result in 10,600 SF of overwater coverage. In addition a mitigation plan including 8,500 SF of shoreline restoration has been proposed. The temporary trestle would be 6,880 SF and be located south of the existing bridge. The temporary work platforms would be located on each bank of the river, each of which would cover 2,500 SF beyond the OHWM. The proposed bridge replacement project is critical to the business operations of Boeing Commercial Airplanes in Renton. All production aircraft assembled in the Renton factory must be transported across the bridge to the Renton Municipal Airport. There is no alternative means to transport aircraft from the factory to the airport. The loss of function of the bridge would disrupt production, resulting in substantial economic losses and impacts to employment. The bridge was built in the 1940's and has undergone various modifications and repairs over time. The new bridge will consist of steel plate griders with a precast concrete deck supported on drilled shafts for two piers in the Cedar River and by driven steel pipe piles on two piers located upland. The bridge is located in the Shoreline High Intensity overlay, within Reach A of the Cedar River immediately before the river enters Lake Washington. The project would include work on the following parcels: 0723059001, 0723059069, 0723059007 and 072305HYDR. In addition the project would include work in three different zones beginning from the west, Renton Municipal Airport zoned IM, Cedar River Park, zoned IH, and the Boeing manufacturing facility zoned UC -N2. The site is surrounding by the Renton Municipal Airport to the west, Lake Washington to the north, the Boeing Manufacturing Facility and the Boat House to the east and the Cedar River Park and trail to the south. The project would be located in the floodway and floodplain of the Cedar River and located in a seismic hazard area. Removal and replacement of sediment would result in approximately 15,550 CY of cut and fill. In addition, it is estimated that 23,775.4 SF of river substrate would be disturbed. The applicant provided a stream study and habitat report, geotechnical report, a no rise analysis, and a biological assessment. PART TWO: ENVIRONMENTAL REVIEW In compliance with RCW 43.210.240, the following environmental (SEPA) review addresses only those project impacts that are not adequately addressed under existing development standards and environmental regulations. A. Environmental Threshold Recommendation Based on analysis of probable impacts from the proposal, staff recommends that the Responsible Officials: Issue a DNS -M with a 14 -day Appeal Period. ERC Reportl2-000303.docx City of Renton Department of Communi.y , Economic Development Enviro..... ental Review Committee Report BOEING NORTH BRIDGE REPLCMENT PROJECT LUA21-000303, ECF, SM Report of February 25, 2013 Page 4 of 14 B. Mitigation Measures 1. The applicant shall comply with the recommendations included in the Geotechnical Engineering Study prepared by S&EE, dated May 17, 2012. 2. The applicant shall comply with all conditions of approval included in the Hydraulic Project Approval (HPA) and the Army Corps Section 10 Authorization. 3. The applicant shall comply with the recommendations included in the Standard Stream Study Narrative and Habitat Data Report, prepared by AMEC Environment & Infrastructure, Inc., dated December 2012. 4. Boeing and/or their construction contractor shall coordinate with the City's Surface Water Division on the timing of their proposed bridge final restoration and pile cap removal. 5. A. To avoid impacting the proposed planting and irrigation components of the project; in 2015 or in the future, Boeing shall construct an access roadway immediately upstream of the proposed west bank planting area to the Cedar River by revising the slope down to the river and removing a portion of the old wood bulkhead. The access roadway shall be 12 feet wide and constructed of pervious material that can support contractors' equipment. Design of the access shall be reviewed and approved by the Surface Water Division, prior to construction permit issuance. B. Alternatively, Boeing could choose to pay a fee -in -lieu to the Vegetation Conservation Fund, identified in the City's SMP for mitigation in other locations along the Cedar River and remove a portion of the proposed shoreline landscaping area providing an alternative for dredging. If the fee -in -lieu option is utilized, either the amount paid shall be identified in the required federal permits or such amount shall be reviewed and approved by the City of Renton Department of Community and Economic Development. 6. A Memorandum of Agreement (MOA) shall be completed between the Boeing Company and the City of Renton granting the City the right to access the proposed new North Boeing Bridge to conduct future maintenance dredging operation from, under and around the bridge. The MOA shall be completed and signed prior to construction permit issuance. 7. Access shall remain open to the Boat House and pier during construction, temporary closures similar to the current operating practice today are acceptable. A sign shall be posted at the entrance of the trail access notifying the public of anticipated temporary closures, and for what duration access would be closed and/or limited. Such sign shall be posted and updated throughout the construction process. S. If closures of the Cedar River are expected, a schedule shall be provided to the City prior to construction permit issuance. The closure schedule shall be provided to the City of Renton Community Services Department, Park and Golf Course Director. A notice shall be posted near the non -motorized boat launch with a closure schedule to notify any recreational boaters of the closure schedule. 9. A boater's safety plan shall be provided for review and approval by the Community Services Department, prior to construction permit issuance. 10. All truck hauling routes shall access the site through the Renton Boeing Plant site and shall not use Riverside Drive. ERC Reportl2-000303.docx City of Renton Department of Community & ---nomic Development Environmental Review Committee Report BOEING NORTH BRIDGE REPLACMENT PROJECT LUAI2-000303, ECF, SM Report of February 25, 2013 Page 5 of 14 C. Exhibits Exhibit 1 Neighborhood Map Exhibit 2 Boeing -Renton North Bridge Plan Exhibit 3 Landscape Plan & Details — (4 sheets) Exhibit 4 Existing Site & Demolition Plan Exhibit 5 Site Grading Plan Exhibit 6 Temp. Bridge Site Plan Exhibit 7 Bridge Plan & Elevation Exhibit 8 Temp. Bridge Plan & Elevation Exhibit 9 Power and Lights — Site Plan (3 sheets) Exhibit 10 Revised JARPA Narrative and Plan Set Exhibit 11 Standard Steam Study Narrative and Habitat Data Report Exhibit 12 Impervious Surface Report Exhibit 13 Noise Variance Memorandum, dated Feb. 25, 2013 Exhibit 14 Construction schedule power point D. Environmental Impacts The Proposal was circulated and reviewed by various City Departments and Divisions to determine whether the applicant has adequately identified and addressed environmental impacts anticipated to occur in conjunction with the proposed development. Staff reviewers have identified that the proposal is likely to have the following probable impacts: 1. Earth Impacts: The project is located over the Cedar River; therefore, much of the work would occur in the river bed, to allow for pile driving for the new bridge, temporary bridge, and temporary work platforms. The project would result in fill that is needed to protect the shoreline and to create a suitable base for installation of mitigation plants. The applicant has indicated in the SEPA checklist that approximately 5,200 cubic yards of soil would be removed and 205 cubic yards of filter stone and 690 cubic yards of rip rap will be required for the project. The applicant provided a Report of Geotechnical investigation, prepared by S&EE, dated May 17, 2012. The provided report has indicated that the existing bridge system is vulnerable to collapse in a strong earthquake and is further compromised by ongoing corrosion of the steel members. The project is located in a seismic hazard area pursuant to the City of Renton sensitive area maps, which has contributed to the applicant's determination to replace the existing bridge. The geotechnical investigation included two soil test borings, one at each end of the existing bridge (B-1 and B-2). Each boring was drilled to a depth of 180, feet in both borings similar subsoil conditions were identified. The provided report provided a breakdown of the identified subsoils by strata as follows: I. Depth to top of stratum = 0 ft. (ground surface), medium dense, mixture of sand and gravel. II. Depth to top of stratum = 10 ft., loose and soft sand, silty sand and silt. These soils are alluvial deposits and are susceptible to liquefaction during a strong earthquake. III. Depth to top of stratum = 50 ft. at B-1 and 60 ft. at B-2, medium dense sand and stiff silt. ERC Report12-000303.docx City of Renton Department of Community &-__nomic Development _nvironmental Review Committee Report BOEING NORTH BRIDGE REPLACMENT PROJECT LUA12-000303, ECF, SM Report of February 25, 2013 Page 6 of 14 IV. Depth to top of stratum = 60 ft. at B-1, dense gravel. Drilling through this layer was very difficult and took about two -days to drill. V. Depth to top of stratum = 105 ft. at B-2, 110 ft. at B-1, stiff to very stiff silt. VI. Depth to top of stratum = 115 ft. at B-2, 135 ft. at B-1, stiff to very stiff silt. VII. Depth to top of stratum = 140 ft. at B-2, 165 ft. at B-1, hard silt. The geotechnical report concludes that the stratum encountered, as shown above, is typical alluvial deposits in the upper 150 feet of the explorations. The report also evaluated groundwater elevations and concluded that the groundwater table at the site would follow the river level closely. The report provides recommendations for bridge construction, recommending that the new bridge be supported on deep foundations which should penetrate the liquefaction zone and be embedded in competent soils. A drilled shaft foundation should be used due to the high demand on lateral capacity and the necessity of penetrating the dense gravel layer with an optimal shaft size of 4 feet in diameter and 110 feet in length measuring from the existing ground surface or elevation 20 feet. In addition to new bridge construction recommendations, the report provided recommendations for the temporary bridge and work platforms. The report concludes that these structures could be supported on steel H piles or pipe piles, as they would generate less under -water sound disturbance than pipe piles. Additionally, more specific recommendations are included in the report addressing back fill, bridge support (such as vertical capacities, responses to lateral loads, settlement, and construction), trestle support (including pile capacity, settlement, and construction), lateral earth pressures, surcharged induced lateral loads, seismic induced lateral loads, drainage behind retaining walls, earthwork, slab -on -grade, temporary and permanent excavation, and seismic considerations and hazards. Based on these recommendations, staff recommends a mitigation measure that the applicant comply with the recommendations included in the provided Geotechnical Engineering Study. Mitigation Measures: The applicant shall comply with the recommendations included in the Geotechnical Engineering Study prepared by 5&EE, dated May 17, 2012. Nexus: SEPA Environmental Review, RMC 4-3-050 Critical Areas Regulations, RMC 4-4-060 Grading, Excavation and Mining Regulations. 2. Water a. Wetland, Streams, Lakes Impacts: The subject project is located in and over the Cedar River, just before the river enters Lake Washington. Pursuant to the City Shoreline Master Program (SMP) the site is located in Reach A of the Cedar River, with a shoreline designation of Shoreline High Intensity. The subject project would have habitat and stream impacts in the aquatic areas surrounding the project site. The applicant submitted with their application a Standard Stream Study and Habitat Data Report, prepared by AMCE Environment & Infrastructure, Inc., dated December 2012. In addition, the applicant is required to receive Hydraulic Project Approval (HPA) and US Army Corps of Engineers Section 10 Authorization. The application and review process for both the HPA and the Section 10 Authorization will result in a number of mitigation requirements for the subject project. In an effort to recognize WDFW and the Army Corps expertise in these areas and not create conflicts between the different reviewing agencies staff recommends a mitigation measure that the applicant complies with the requirements of the HPA and the Section 10 Authorization. FRC Report12-000303.docx City of Renton Deportment of Community & omic Development BOEING NORTH BRIDGE REPLA CNFENT PRO!£Cr Report of February 25, 2013 nvironmental Review Committee Report LUA12-000303, ECF, SNI Page 7 of 14 In the provided Stream Study, the Biologist evaluated existing conditions in the Cedar River and Lake Washington in the vicinity of the project and concluded that the riparian areas along the banks of the river are dominated by invasive species. The primary ecological function provided by the riparian vegetation along the lower Cedar River includes, nesting and foraging habitat for birds and small mammals, input of terrestrial insects from overhanging vegetation, input of allochthonuse organic matter, some erosion control and limited habitat complexity. The lower Cedar River is a man-made channel created in 1912 and is substantially altered. Due to extensive development along both banks of the river in the project area there is little if any transition between riparian and upland habitats. The report analyzed "no net loss of ecological function" as required by the SMP and concluded that the proposed north bridge replacement project will result in no net loss of ecological function. As described above, the immediate project site provides limited ecological function due to low habitat diversity and complexity. The Biologist identifies that under the proposed project plan, ecological functions in the immediate project area are expected to improve because of the following project elements: 1. Removal of a total of approximately 4,000 SF of overwater structure from the near shore area along each bank of the river; 2. Removal of a total of timber bulkheads from the two banks; 3. Replacement of 196 timber, steel, and concrete piles and piers with just 4 concrete bridge piers below the OHWM; and 4. Restoration of a total of 8,500 SF of shoreline (260 linear feet) along both banks, including a total 2,529 square feet of native riparian vegetation. The vegetation proposed to be planted would be limited to low -growing native shrubs and groundcover, to reduce impacts to aviation operations at the Renton Municipal Airport and avoid interference with the transport of Boeing aircraft over the replacement bridge. The study finished by stating the proposed project is expected to result in a net gain in ecological function in the immediate project area through the reduction in overwater coverage by approximately 4,000 SF and shoreline restoration of the shoreline area previously covered by the bridge aprons. Based on the mitigation proposal included in the steam study and other recommendations, staff recommends a mitigation measure that the applicant comply with the recommendations included in the Standard Stream Study and Habitat data report. Mitigation Measures: 1. The applicant shall comply with all condition of approval included in the Hydraulic Project Approval (HPA) and the Army Corps Section 10 Authorization. 2. The applicant shall comply with the recommendations included in the Standard Stream Study Narrative and Habitat Data Report, prepared by AMEC Environment & Infrastructure, Inc., dated December 2012. Nexus: SEPA Environmental Regulations, Critical Areas Regulations b. Storm Water Impacts: Flood Impacts: The proposed project is located over the Cedar River and is located in a 100 year flood plain and a floodway of the Cedar River. Therefore, the applicant was required to provide a ERC Report12-000303. docx City of Renton Department of Community & omic Development nvironmental Review Committee Report BOEING NORTH BRIDGE REPL4CMENT PROJECT tUAI2-000303, ECF, SM Report of February 25, 2013 Page S of 14 no -rise certification finding. To comply with these standards the applicant prepared a No Rise and Scour Report prepared by AMCE Environment & Infrastructure, Inc., dated December 14, 2012. The study evaluated whether the new bridge including the fixed sediment elevations, the proposed temporary work trestle with surveyed sediment elevations plus temporary coffer dams at the west end, piers for the new bridge and two pier sets from the existing bridge would not result in an increase in the base flood elevation on the Cedar River. The report concludes that the proposed North Boeing Bridge and temporary work trestle meets the no -rise requirement if constructed as shown in the report. Furthermore AMEC found that the proposed bridge would meet the requirements to provide 3 ft. clearance above the 100 -year flood elevations within most of the channel between the pier faces and 2 ft. clearance for all of that opening, and that the deck of the temporary work trestle is above the 100 -year flood elevation for its full length but that its low beam is below the 100 year flood elevation at both ends. Finally AMEC concludes that scour is not found to be a problem for the proposed structure as the piles would be driven more than 70 feet deep. The City's Stormwater Department reviewed the provided report and has indicated that the zero rise hydraulic analysis is met for the new North Boeing Bridge. However, if the project involves work within the 100 -year floodplain, such as filling or grading below FEMA's regulated floodplain elevation of 16.00 (NGVD 29), compensatory storage would be required pursuant to Renton Municipal Code. Furthermore, the City conducts maintenance dredging in the subject reach of the Cedar River as a requirement of the USAGE Cedar River Flood Hazard Reduction Project Cooperation Agreement which is needed to maintain the flood protection benefits of the federally constructed project. The applicant proposed shoreline mitigation plantings which are located in the area where the City would need access to the river for the required maintenance dredging. The provided JARPA application has indicated that the mitigation would be installed in 2015 and that the temporary trestle piles would be cut two feet below the City's anticipated dredge depth during late summer 2015. The mitigation landscaping would impact the City's maintenance dredging access in the subject area. In order to minimize potential impacts to the Bridge Project mitigation and the City's required dredging, project staff recommends a mitigation measure that Boeing and/or their construction contractor shall coordinate with the City Surface Water Division on the timing of their proposed bridge final restoration and pile cap removal. And to avoid impacting the proposed planting and irrigation components of the mitigation proposal, in 2015 or in the future, Boeing shall construct an access roadway immediately upstream of the proposed west bank planting area to the Cedar River by revising the slope down to the river and removing a portion of the old wood bulkhead. The access roadway shall be 12 feet wide and constructed of pervious material that can support's contractor's equipment. Finally, a Memorandum of Agreement (MDA) shall be completed between the Boeing Company and the City of Renton granting the City the right to access the proposed new North Boeing Bridge to conduct future maintenance dredging operations from, under and around the bridge. The MDA shall be completed and signed prior to construction permit issuance. If Boeing would prefer to perform the maintenance dredging in the area of the proposed temporary and new bridge as a part of the project, which would allow for better access and coordinated efforts while the coffer dam is in the water, the above recommended agreement could be eliminated. ERC Reportl2-000303.docx City of Renton Deportment of Community & _ nomir Development _nvironmental Review Committee Report BOEING NORTH BRIDGE REPLA CMENT PROJECT LUA12-000303, ECF, 5M Report of February 25, 2013 Page 9 of 14 Or to reduce potential future impacts to the City's dredging project and potentially increase functional mitigation for the project, Boeing could choose to provide a fee -in -lieu to the Vegetation Conservation Fund, identified in the City's SMP for mitigation in other locations along the Cedar River. Such a fund could potentially provide increased stream functions and values as the mitigation project could be larger in scope and provide mitigation with larger plants then proposed at the subject site due to the constrains of the existing stream channel, flood protection levees and the constraints of an operating Municipal Airport. Stormwater: The project area is relatively flat with an approximate change in grade over the site of 15 ft. The majority of the project area is at Elevation +20. Under current conditions stormwater from the existing bridge sheet flows north to Lake Washington. A small portion of the bridge runoff sheet flows to a landscape area west of the project site. The runoff enters into an existing structure which discharges into the Cedar River through a 6 -inch diameter pipe. The stormwater runoff from the paved area immediately east of the bridge is collected by slot. drains and conveyed to a treatment system on the Boeing property. After the runoff is treated it is discharged into the Cedar River though an existing 30 -inch diameter pipe. The applicant provided a Technical Information Report (TIR) prepared by Berger ABAM, dated December 12, 2012. The TIR evaluated the projects compliance with the 2009 KCSWDM. The proposed North Boeing Bridge would remove the existing 32 -foot wide bridge and construct a wider 50 -foot bridge to span the Cedar River. The existing aprons on each side of the bridge would be removed resulting in the removal of approximately 7,470 square feet of impervious surface area (Exhibit 12). Overall there would be a net reduction of 6,060 square feet of impervious surface. The project would result in approximately 20,435 SF of new plus replaced impervious surfaces; therefore the project triggers "full drainage review". The TIR has identified that the project would be exempt from the flow control facility requirement and water quality treatment facility requirements. The project is not proposing any new stormwater conveyance systems; therefore the existing drainage patterns would remain unchanged. Mitigation Measures: 1. Boeing and/or their construction contractor shall coordinate with the City Surface Water Division on the timing of their proposed bridge final restoration and pile cap removal. 2. A. To avoid impacting the proposed planting and irrigation components of the project, in 2015 or in the future, Boeing shall construct an access roadway immediately upstream of the proposed west bank planting area to the Cedar River by revising the slope down to the river and removing a portion of the old wood bulkhead. The access roadway shall be 12 feet wide and constructed of pervious material that can support contractors' equipment. Design of the access shall be reviewed and approved by the Surface Water Division, prior to construction permit issuance. B. Alternatively, Boeing could choose to pay a fee -in -lieu to the Vegetation Conservation Fund, identified in the City's SMP for mitigation in other locations along the Cedar River and remove a portion of the proposed shoreline landscaping area providing for dredging access in another way. If the fee -in -lieu option is utilized, either the amount paid shall be identified in the required federal permits or such amount shall be reviewed and approved by the City of Renton Department of Community and Economic Development. 3. A Memorandum of Agreement (MOA) shall be completed between the Boeing Company and the City of Renton granting the City the right to access the proposed new North Boeing Bridge ERC Reportl2-000303.docx City of Renton Department of Community & _ _ nomic Development _nvironmental Review Committee Report BOEING NORTH BRIDGE REPLACMENT PROJECT LUA12-000303, ECF, SM Report of February 25, 2013 Page 10 of 14 to conduct future maintenance dredging operation from, under and around the bridge. The MOA shall be completed and signed prior to construction permit issuance. Nexus: Critical Areas Regulations, USACE Cedar River Flood Hazard Reduction Project Cooperation Agreement 3. Vegetation Impacts: The Cedar River shoreline consists primarily of riparian vegetation. A vegetation survey was conducted 100 feet upstream along both riverbanks and along Lake Washington, by AMSC, details are included in the Standard Steam Study Narrative and Habitat Data Report. The vegetation survey concluded that the site is dominated by the existing bridge and associated aprons which contain little to no vegetation. The existing vegetation outside these areas consist primarily of Himalayan blackberry, butterfly bush, reed canarygrass, and common tansy (which are all species listed as noxious weeds by King County). A small unidentified species of willow and various unidentified grasses were also present. A portion of the riparian area along the eastern bank of the river has been landscaped with native vegetation consisting of Nootka rase, red osier dogwood and mock orange. The site contains no trees with trunks greater than or equal to 10 inches in diameter located within 100 feet of the property line of the project. It appears no trees would be removed as a result of the subject project, however if trees are removed replacement trees shall be provided. The project mitigation planting would add new riparian vegetation to the project area consisting primarily of shrubs, ground cover and willows. Impacts to vegetation are not anticipated as a result of the project. Mitigation Measures: No further mitigation required Nexus: N/A 4. Wildlife Impacts: The application is required to comply with Section 7 ESA and therefore a Biological Assessment (BA) was developed for the subject project. AMSC completed the BA and it is included as Appendix B of the Standard Stream Study and Habitat Data Report. The BA identifies that Puget Sound Chinook salmon, Bull trout and Puget Sound steelhead trout may occur in the projects action area. Section 2.5 of the BA, lists 12 Best Management Practices (BMPs) that would be incorporated into the proposed action to minimize and avoid potential impacts to listed species and their critical habitat. Such BMPs include but are not limited to, using cofferdams to isolate in -water work areas, heavy-duty mesh fabric would be placed beneath structures to reduce demolition and construction debris from entering the water, no heavy equipment would be placed into or enter the Cedar River, etc. Additionally, three mitigation measures are listed to reduce potential impacts to listed species and their critical habitats or to essential fish habitat, which included the reduced overwater coverage of 4,000 SF, a substantial reduction in the number of in -water structures within the river, thereby reducing possible predator habitat and exposing more benthic habitat, and restoration of shoreline on both banks of the Cedar River in the area where the bridge aprons are to be removed, providing improved near shore habitat for juvenile salmonids. The BA evaluated long-term direct and indirect effects, short-term direct and indirect effects on Puget Sound Chinook Salmon and determined the proposed action may affect the Puget Sound Chinook Salmon and is likely to adversely affect Puget Sound Chinook salmon. The BA also evaluated the effects on critical habitat and concluded that the project may affect Puget Sound Chinook salmon critical habitat and is not likely to adversely affect Puget Sound Chinook salmon ERC Report12-000303. docx City of Renton Department of Community &-__nomic Development _nvironmentol Review Committee Report BOEING NORTH BRIDGE REPLACMENT PROJECT LUA12-000303, ECF, SM Report of February 25, 2013 Page 11 of 14 critical habitat. The same evaluation was completed for Puget Sound steelhead trout, and a determination was made that the proposed action may affect, and is likely to adversely affect Puget Sound steelhead trout. Again, the same evaluation was conducted and the report concludes the proposed action may affect Puget Sound bull trout and is not likely to adversely affect the Puget Sound bull trout. The BA evaluated critical habitat for the bull trout and concluded the project may affect the Puget Sound bull trout critical habitat. Details can be found in the provided BA. Moreover, the proposed action has the potential to affect listed species or their critical habitat and the determination of effects for the proposed action for each listed species that may occur in the action area are summarized in Table 6 of the BA. Based on the recommendations included in the provided BA staff recommends as a mitigation measure that the applicant complies with the recommendations included in the Standard Stream Study and Habitat data report and any conditions of approval issued as a result of the Section 7 ESA review. Mitigation Measures: See mitigation recommended above under subsection 2.a. "Wetlands, Streams and Lakes". Nexus: Section 7 ESA review, Critical Areas Regulations 5. Environmental Health a. Noise and Vibration Impacts: It is anticipated that the project would result in an increase in temporary construction noise. The applicant has indicated that the proposed project is scheduled to begin construction in April/May of 2013 and the overall project would take approximately 2 to 3 years to complete. The estimated end date of construction is December 2015. The construction mitigation document provided with the application, identifies three different work hour requests beyond the City's permitted work times. June 1 to August 15 (during the authorized in -water work window, which may vary based on approvals from WDFW and USACE). Construction is anticipated six days a week, for 12 to 16 hours per workday from 6 a.m. to 6 p.m., as late as 10 p.m. However, during drilled shaft operations, there may be 4 days where the project contractor may need to work 24 hour shifts to minimize impact on the Airport. It is anticipated that four of these shifts would occur during the fish window of 2014. ll. August 16 to July 31, construction is anticipated to be four and/or five days per week from 7 am to 3:30 p.m. and/or a 10 hour workday from 6:30 a.m. to 5 p.m. III. The applicant has indicated that some nighttime work would be required to ensure scheduled in -water work could be completed prior to the end of the authorized work window. Nighttime construction operations may involve construction drilled shafts, pouring concrete and miscellaneous bridge construction activities. The applicant has indicated that the times identified are subject to change based on jurisdictional requirements or needs of the construction project. Boeing has indicated they would notify the City of any changes as they occur. Some of the above identified extended work times would require a noise variance approval from the City, because the noise impacts would happen after 10 PM and/or before 7 a.m., see noise variance request in Exhibit 13. ERC ReAortl2-000303. docx City of Renton Department of Community & _-_ omic Development _nvironmentol Review Committee Report BOEING NORTH BRIDGE REPLACMENT PROJECT _ LUA12-000303, ECF, SM Report of February 25, 2013 Page 12 of 14 Overall, the loudest noise and vibration impacts of the project is expected to be a result of the impact pile driving. The noise impacts from pile driving are anticipated to have above water and underwater impacts. The Biological Assessment, included in the Standard Stream Study Narrative and Habitat Data Report, evaluated noise impacts on fish. The BA has identified the primary source of underwater sound to be from the vibratory installation of cofferdams, steel H -piles, the vibratory installation of steel -pipe piles, and the proofing of load-bearing steel H -piles with an impact hammer. Based on the provided noise variance schedule, high impact pile driving is anticipated to occur between May 16t''through September 1St of 2013 (approximately 20 days) and June 1St through August 31 of 2014 (approximately 20 days). The applicant has proposed to utilize a bubble curtain to attenuate the underwater noise levels associated with the impact installation of the steel piles. However, the above water noise levels associated with pile driving would not be mitigated. However, such impacts are temporary and would be in short duration. Mitigation Measures: No further mitigation needed Nexus: N/A 6. Parks and Recreation Impacts: The project site is immediately north of the Cedar River Park and the project area of work would cross the Cedar River Trail where the trail provides access to the Boat House located on Lake Washington. In addition, the trail accesses a pier that provides public access to the shoreline for fishing and other recreational activities. Furthermore, the in water work for the bridge could interfere with the public use of the Cedar River. There is a non -motorized boat launch just upstream of the project action area. In order to ensure safe public access to the existing recreational amenities at the subject site, staff recommends the following mitigation measures: If closures of the Cedar River are expected, a schedule shall be provided to the City prior to construction permit issuance. The closure schedule shall be provided to the City of Renton Community Services Department, Park and Golf Course Director. A notice shall be posted near the non -motorized boat launch with a closure schedule to notify any recreational boaters of the closure schedule. And a boaters' safety plan shall be provided for review and approval by the Community Services Department, prior to construction permit issuance. The Boathouse contains an operating kayak rental business, the subject project shall not close access to this existing business for extend periods of time. As such, staff recommends as a mitigation measure that access shall remain open to the Boat House and pier during construction, temporary closures similar to the current operating practice today is acceptable. A sign shall be posted at the entrance of the trail access notifying the public of anticipated temporary closures, and for what duration access would be closed and/or limited. Such sign shall be posted and updated throughout the construction process. Mitigation Measures: 1. Access shall remain open to the Boat House and pier during construction, temporary closures similar to the current operating practice today is acceptable. A sign shall be posted at the entrance of the trail access notifying the public of anticipated temporary closers, and for what duration access would be closed and/or limited. Such sign shall be posted and updated throughout the construction process. ERC Reportl2-000303_docx City of Renton Department of Community & omic Development _nvironmental Review Committee Report BOEING NORTH BRIDGE REPL4CMENT PROJECT LUA12-000303, ECF, SM Report of February 25, 2013 Page 13 of 14 2. If closures of the Cedar River are expected, a schedule shall be provided to the City prior to construction permit issuance. The closure schedule shall be provided to the City of Renton Community Services Department, Park and Golf Course Director. A notice shall be posted near the non -motorized boat launch with a closure schedule to notify any recreational boaters aware of the closure schedule. 3. A boater's safety plan shall be provided for review and approval by the Community Services Department, prior to construction permit issuance. Nexus: SMP, SEPA Environmental Review, public health and safety 7. Transportation Impacts: The subject project would temporarily close a bridge that is utilized solely by the Boeing Company to transport planes to the Renton Municipal Airport. The project would not close any public streets. Haul routes were identified in the provided construction mitigation description, which stated that access to the site would be through existing access points for the Boeing Renton Plant and no trucks would be using Riverside Drive or would be accessing from the Renton Municipal Airport. In order to ensure that haul trucks are not impacting the Riverside Drive and the public's use of the Cedar River Park, staff recommends a mitigation measure that requires all trucks to access the site through the Renton Boeing Plant site. Mitigation Measures: All truck hauling routes shall access the site through the Renton Boeing Plant site and shall not use Riverside Drive. Nexus: SEPA S. Light and Glare Impacts: The proposed bridge would be equipped with four red navigation lights, two on each side of the bridge deck at the bridge piers per the U.S. Coast Guard regulations. These navigation lights would be on at all times during the night. The bridge deck would be illuminated with unidirectional light, provided by lamps recessed into the inside face of a 6 -inch high concrete curb on each side of the bridge deck. These lights are designed to be directed only onto the bridge deck The updated JARPA narrative indicated that the lamps are expected to cast light a distance of three to four feet on the bridge deck only. The lamps are proposed to be spaced 10 feet apart on center. The directional light would limit the impacts of lighting on the listed species and other aquatic animals found in this reach of the Cedar River. However, the complete elimination of lighting is not feasible, as lighting is required to provide pedestrian safety. In addition to the permanent lighting on the new bridge, the temporary trestle would be equipped with 12 red navigation lights at the bridge piers. The trestle deck would be illuminated with the same unidirectional lamps as would be used on the new bridge. The updated JARPA cover letter prepared by AM EC, dated January 22, 2013 concluded that the proposed lighting is not expected to cast extraneous light on the underlying substrate beneath the bridges. The provided red navigational lighting would increase vessel safety. The overall light emitted from the two bridges would not have an impact on any neighboring residential properties as the site is located between the Boeing Manufacturing Plant and the Renton Municipal Airport that emitted much more light than anticipated by the Bridge. ERC Report12-000303.docx City of Renton Deportment of Community & omit Development -nvironmento! Review Committee Report BOEING NORTH BRIDGE REPLACMENT PROJECT LUA12-000303, ECF, SM Report of February 25, 2013 Page 14 of 14 Mitigation Measures: No further mitigation required Nexus: N/A E. Comments of Reviewing Departments The proposal has been circulated to City Department and Division Reviewers. Where applicable, their comments have been incorporated into the text of this report and/or "Advisory Notes to Applicant." Copies of all Review Comments are contained in the Official File and may be attached to this report. The Environmental Determination decision will become final if the decision is not appealed within the 14 -day appeal period (RCW 43.21.C.075(3); WAC 197-11-680). Environmental Determination Appeal process: Appeals of the environmental determination must be filed in writing together with the required fee to: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057, on or before 5:00 p.m. on March 15, 2013. RMC 4-8-110 governs appeals to the Hearing Examiner and additional information regarding the appeal process may be obtained from the City Clerk's Office, Renton City Hall — 7th Floor, (425) 430-6510. ADVISORY NOTES TO APPLICANT The following notes are supplemental information provided in conjunction with the administrative land use action. Because these notes are provided as information only, they are not subject to the appeal process for the land use actions. Planning: 1. RMC section 4-4-030.C.2 limits haul hours between 8:30 am to 3:30 pm, Monday through Friday unless otherwise approved by the Development Services Division. 2. Commercial, multi -family, new single family and other nonresidential construction activities shall be restricted to the hours between seven o'clock (7:00) a.m. and eight o'clock (8:00) p.m., Monday through Friday. Work on Saturdays shall be restricted to the hours between nine o'clock (9:00) a.m. and eight o'clock (8:00) p.m. No work shall be permitted on Sundays. Plan Review: 1. Erosion control shall comply with the 2009 King County Surface Water Manual. 2. City code requires compliance with the Critical Area Ordinance. Community Services: 1. Any damaged plants in the park shall be replaced. 2. No material shall be stored on the Cedar River Trail park property. 3. Contractor staging area shall be on the Boeing property. Airport: A "7460-1 Obstruction to Airspace form" shall be completed for the project. 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I- O C v N c -a x� <Q o 3 a u I'cr 8i SII LO � l z L ac � F z 6 � K U S C7 W rn rr r z� . I- C c O o 1� C v N c -a x� <Q o 3 a u I'cr 8i LO v z L ac � F z 6 � K U oo 2 C7 W rn rr r z� C c O o 1� C v N c -a W 0 "Am woW7nL January 22, 2013 Project LY11160130 U.S. Army Corps of Engineers, Seattle District Regulatory Branch Attn: Ms. Lori Lull P.D. Box 3755 Seattle, WA 98124-3755 Subject: Addenda to Joint Aquatic Resources Permit Application and Draft Biological Assessment — Revised Project Description and No -rise Report The Boeing Company — North Bridge Replacement Project Renton, Washington (Corps Ref. No. NWS -2011-1101) Dear Ms. Lull: Since submitting the Joint Aquatic Resources Permit Application (JARPA) and draft biological p assessment (BA) for The Boeing Company's (Boeing) proposed North Bridge Replacement rl Project on June 6, 2412, Boeing's engineering contractor for bridge design has prepared and submitted the 90% design plans for the proposed bridge replacement. The updated plans m provide details regarding bridge design and construction that were unavailable last June and H also include changes to the design and construction methods that differ from those presented in = the JARPA and draft BA. The purpose of this addendum is to update the project description for the proposed project in the JARPA and draft BA so that that they it is consistent with the current LV design plans. Proposed project changes also necessitated that the hydraulic analysis (no -rise report) also be revised. The five primary elements of the proposed bridge replacement project remain unchanged: • Demolish existing bridge aprons and construct temporary trestle; Demolish existing bridge; * Construct new bridge; * Remove temporary trestle; and • Construct shoreline restoration. To the extent possible, when describing the changes to the proposed project, I tried to adhere to the order of construction sequencing as presented in the JARPA and draft BA. Some of the changes described below are in response to comments (i.e., vegetation used in shoreline restoration, in -water structures associated with the new bridge trapping large woody debris, and bridge lighting) received from Ms. Karen Waiter, Muckleshoot tribal biologist, as well as AMEC EmAronment & Infrastructure, Inc. 3500 188th Street SW, Suite 601 Lynnwood, Washington 98037-4763 USA Tel (425) 921-4000 Fax (425)921-4040 www.atnec.eom s`"� V`<< Ms_ Lori Lull U_S, Army Corps of Engineer January 22, 2013 Page 2 comments (i.e., use of raw cement to cast bridge deck) received from Ms. Rebekah Padgett of the Washington Department of Ecology. The proposed project changes are discussed in the following sections. PROJECT DESCRIPTION UPDATES: JARPA AND DRAFT BA This section presents changes to the project descriptions for both the JARPA and the draft BA_ Demolition of Apron Deck and Apron Piles Prior to removal of the apron decks, modified coffer dams will be created on each bank of the river using the existing timber bulkheads. The coffer dams will be created by covering the bulkheads with silt curtains and then sealing the open ends located on the north end of the bulkheads with sandbags. The modified coffer dams will allow in -water work to occur, while minimizing or avoiding increased turbidity and impacts to adjacent surface water quality. Coffer dam creation is expected to take 3 days. As with any of the proposed coffer dams, qualified fisheries biologist will conduct a survey of the area within the coffer dam, removing and releasing, unharmed, any fish trapped within the coffer dam. A fish removal work plan will be prepared and submitted to the requisite agencies for review and approval prior to conducting the fish removal_ Electrofishing will not be used. This work is proposed to occur in April or May, outside of the authorized in -water work window of 2013, the only year that a variance is being requested. All subsequent in -water work will be restricted to the in -water work window established for this project of June 1S'through August 160i. Once the coffer dams are in place, the apron decks would be removed, requiring no in -water work. Work within the coffer dams that will occur during the April/May timeframe will include: • Removal of steel H -piles sitting on buried timber piles and removal of steel cross bracing (in -water); • Removal of upper bulkhead where temporary trestle will be located (in -water); • Cut-off timber piles (Le., those that supported the steel H -piles) below future dredging grade (in -water); • Regrade bank, to the extent possible, where temporary trestle will be located; • Install temporary trestle piles to support nearshore spans of temporary trestle (in - water); and • Install temporary trestle span (steel girders, precast deck panels for nearshore spans. The in -water work within the coffer dam will require about 13 days to complete, so that the entire duration of in -water working outside of the authorized in -water work window will be about 16 Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 3 days. The remainder of the in -water work for subsequent years will be confined to the authorized in -water work window for this project of June 151 through August 15`x. The length of time that the proposed coffer dam will be left in place is unknown at this time, but it will only be removed during the authorized in -water work window. The construction of the coffer dam and limited work outside the window is necessary to meet the project schedule when considering the in -water work window and constraints on project construction from operation requirements of the adjacent airfield and Boeing. Completing the work specified before the work window will allow the in -water work elements of the temporary bridge to be completed in one work window and allow the entire project to be completed in three work windows. Temporary Trestle Construction Under the original plan, the temporary trestle was to be supported by seven pile bents of five 14 -inch steel H -piles per bent. Five of the pile bents would have been below the ordinary high water mark (OHWM) for a total of 25 H -piles below the OHWM. Under the revised design, there will be seven pile bents below the OHWM, with each bent consisting of four 24 -inch diameter steel -pipe piles (SPPs), for a total of 28 SPPs below the OHWM (Sheets 1 through 3). The bridge deck for the temporary trestle as originally planned would have been wood decking with asphalt overlay. Under the current plan, the temporary trestle deck will consist of pre -cast concrete decking (Sheet 3). These changes were necessary to obtain seismic capacity for the bridge. Existing Bridge Demolition This section addresses proposed changes to the existing bridge demolition plans. Temporary Work Platforms - The original plan proposed demolishing the existing bridge from the temporary trestle and from the existing bridge approaches on the east and west ends of the existing bridge; however, an engineering analysis subsequent to the submission of the JARPA in June 2012 revealed that the existing bridge approaches may be unable to support the weight of some of the proposed construction equipment (e.g., crawler crane with 120 -foot boom) to be used for existing bridge demolition and new bridge construction. Therefore, the bridge approaches on each bank will be demolished and replaced with temporary work platforms, each of which will cover about 2,500 square feet beyond the OHWM. This is less than the coverage of the existing aprons. Each platform will be supported by 12 to 16 16 -inch to 24 -inch diameter SPPs. Eight (8) to 12 piles supporting each of the platforms will be placed below the OHWM. Therefore, a total of 16 to 24 of the piles will be located below the OHWM (Sheets 4 and 5). To the extent possible, the piles will be vibrated in, but some proofing with an impact hammer may be necessary. In the event an impact hammer is required, sound attenuation will be Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 4 accomplished using a bubble curtain_ The temporary work platforms are expected to be in place for six months to one year. Bridge Demolition Support Braces - Engineering analysis of the existing bridge determined that there is the potential for the bridge to collapse during demolition. To avoid this possibility, temporary supporting braces will have to be placed beneath the bridge deck during demolition (Sheets 4 and 5). Three to four supports will be placed beneath the bridge deck, with each support consisting of two 16 -in to 24 -in diameter SPPs and a cross beam. Therefore, six to eight temporary SPPs will be placed in the river below the OHWM. To the extent possible, the piles will be vibrated in, but some proofing with an impact hammer may be necessary. In the event an impact hammer is required, sound attenuation will be accomplished using a bubble curtain. The supports will be removed from the river using a vibratory driver as soon as the bridge deck is demolished. New Bridge Installation This section addresses proposed changes to the new bridge construction plans. Bridge Columns - There are a number of substantial changes proposed for construction of the new bridge. Ms. Karen Walter, Muckleshoot tribal biologist, provided a number of comments to the U.S. Army Corps of Engineers (Corps) in a letter to Ms. Lori Lull dated November 9, 2012. One of those comments expressed tribal concerns regarding bridge piers trapping large wood that may be carried by the lower Cedar River. Boeing's bridge engineers examined several bridge designs that would eliminate any in -water bridge piers, but had to abandon such design options due to restrictions at the project site, the principal of which is the presence of the Renton Municipal Airport runway located immediately west of the bridge. The minimum length required for a free -span bridge is substantially greater than the space available for such a bridge, which would impinge upon the Renton Municipal Airport runway. Alternatively, Boeing's bridge engineers re-examined the original bridge design and determined that fewer in -water bridge columns could be used, but with larger diameter shafts below the mudline_ Thus, under the revised plan, four 4 -foot diameter concrete columns with 6.5 -foot diameter concrete shafts will be placed in the river instead of the six 4 -foot diameter columns and shafts, as originally designed (Sheets 6 and 7). The drilled shafts will be filled with concrete and then transition to 4 -foot diameter pre -cast concrete columns at a depth of two feet below the historical dredge depth (Sheet S). This approach is expected to help minimize the potential for wracking of large woody debris (LWD) against the bridge piers, although this possibility cannot be completely avoided. The widest, unobstructed span between piles beneath the existing bridge is roughly 65 feet, while the unobstructed span between the pier piles that will support the new bridge is about 141 feet, over twice that of the existing bridge. In addition, about 200 piles will be removed from the river during bridge demolition, as well as two bulkheads that currently constrain the channel. "M Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 5 The overall effect of the replacement bridge will be to open up the channel and substantially reduce the potential for LWD to wrack against the bridge piers of the new bridge. The spacing of the pile bents for the temporary trestle will result in the potential for LWD wracking against the piles_ Boeing will request that the Washington Department of Fish and Wildlife (WDFW) provide a condition in their Hydraulic Project Approval (HPA) for this project that will allow Boeing to remove LWD that wracks against the south side of the temporary trestle and transfer the LWD to the north side of the temporary trestle so that it can be carried into Lake Washington, as Boeing currently does when removing LWD wracked against the existing bridge. Reaction Piles— Under the original proposal, six temporary reaction pile platforms were to be constructed below the OHWM for placement of the drilled shafts, with each platform supported by eight 16 -in diameter SPPs. Thus, there would have been a total of 48 16 -inch diameter SPPs below the OHWM. The revised plan proposes only four reaction pile platforms below the OHWM, with each platform support by only four 16 -inch to 24 -inch diameter SPPs. Thus, there will only be 16 SPPs below the OHWM instead of the 48 SPPs, as originally proposed (Sheet 4). Bridge Deck Construction — The original construction plans proposed poured -in-place concrete bridge deck panels. Ms. Rebekah Padgett, Washington Department of Ecology (Ecology), expressed concerns about the potential impacts to water pH in the event that uncured concrete should enter the water during bridge construction or in the event that concrete dust should enter the water during demolition of the existing bridge (e-mail message to Bob Stuart [AMEC] and Lori Lull [Corps] dated 11113!12)_ In response to Ecology's concerns regarding the use of poured concrete, the design plans were changed to construct the bridge deck from pre -cast, pre -stressed concrete deck panels. To further reduce the use of poured concrete during bridge construction, pre -cast concrete columns and pre -cast concrete pile caps will also be used (Sheet 7). The four bridge drilled shafts will still be constructed of cast -in-place concrete below the historical dredge depth, but casing shoring will be used to provide insulation from the river. Ecology's concerns regarding the impacts of concrete dust generated during bridge demolition on water pH will be addressed below in the section that discusses proposed changes to conservation and mitigation measures. Bridge Lighting - Ms. Walter also expressed concerns about bridge lighting impinging upon the underlying aquatic habitat. The new bridge will be equipped with four red navigation lights, two on each side of the bridge deck at the bridge piers per U.S. Coast Guard regulations. The navigation lights will be on at all times during the night (Sheet 9). The bridge deck will be illuminated with unidirectional light emitting diode (LED) lamps recessed into the inside face of a 6 -inch high concrete curb on each side of the bridge deck such that the light is directed only on to the bridge deck. The lamps are expected to cast light a distance of three to four feet on the bridge deck only. The lamps will be spaced about 10 feet apart on center. The lamps are "M Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 6 required for pedestrian safety and will be operated by a photocell so that they remain on throughout the night. The temporary trestle will be equipped with 12 red navigation lights at the bridge piers, with six on the downstream and upstream edges of the temporary trestle. The temporary trestle deck will also be illuminated with the same LED unidirectional lamps as will be used on the new bridge (Sheet 10). The proposed lighting is not expected to cast extraneous light on the underlying substrate beneath the bridges. Shoreline Regrading and Restoration Removal of the bridge aprons and bulkheads will allow for enhancement of the existing shoreline areas on each bank of the lower Cedar River as described in the JARPA and draft BA submitted in June 2012. Approximately 145 lineal feet (10 of treated -timber bulkhead will be removed from each shoreline. The shoreline will be regraded to an approximate slope of 3:1. The shoreline areas that were formerly covered by bridge aprons and located behind treated - timber bulkheads will be amended with organic materials to create a suitable planting medium, regraded to a more natural slope (e.g., 3:1), and planted with native and adaptive vegetation. A revised conceptual shoreline restoration plan has been developed (Sheets 11 and 12). The shoreline restoration area will cover approximately 8,500 square feet (sf) along 260 If of shoreline and will include the planting of approximately 1,795 sf of riparian vegetation. A final restoration plan will be prepared when all aspects of the bridge design have been finalized. The lower Cedar River in this location occupies a linear constructed channel with the bank protected by bulkheads with areas of riprap. The removal of the existing timber bulkheads from beneath the existing bridge and bridge aprons, as well as the risk of scour on the exposed banks, results in the need for bank protection to reduce risks to the proposed replacement bridge and restored riparian areas. The City of Renton expressed concerns regarding the removal of the timber bulkheads and the potential impact bulkhead removal might have on shoreline stability in the project area. The City indicated that shoreline armoring would be required to insure shoreline stability during future flood -control dredging in the project area. A roughened rock toe will be installed below the OHWM consisting of an approximately 2 -foot layer of rock (Class III riprap) over a filter stone layer. This rock toe will extend below the current sediment line to accommodate the normal flood -control dredging conducted by the City of Renton in this reach of the river as identified in the King County 2006 Flood Hazard Management Plan (King County, 2006) and Lower Cedar River Section 205 Flood Control Project. The riprap used for the toe will be setback from the current bank to create additional aquatic habitat and a vegetated buffer will be planted above the OHWM in the areas formerly occupied by the bridge aprons. Additionally, a gravel fish mix will be placed over the riprap at the OHWM (Sheet 12). The bank restoration will involve approximately 2,230 cubic yards (cy) of cut and the placement of 325 cy of filter stone, 650 cy of riprap and 123 cy of soil amendment. The majority of the cut and fill is located above the OHWM. Ms. Lori Lull U -S. Army Corps of Engineer January 22, 2013 Page 7 Above the OHWM, the planting design for the project uses native and adapted riparian and upland plants that will establish quickly and that have extensive root systems. Representatives of the Renton Municipal Airport, after their review of the proposed restoration plans, objected to any shoreline revegetation out of their concerns that shoreline revegetation would attract wildlife (i.e., birds). The shoreline property in the proposed restoration area is owned by the Renton Municipal Airport, not by Boeing. Negotiations with airport representatives resulted in their agreeing to shoreline restoration in the originally -proposed areas providing that the design is consistent with the Washington State Department of Transportation's (WSDOT) Aviation Stormwater Design Manual, Table A-1 — Recommended Plants for Airports West of the Cascades (2008). These plants are species that are recommended for use in and around airports and are not known to attract wildlife or have other characteristics undesirable in the airport environment. Planting will also be limited to low -growing species that will not attain heights of more than 10 feet to prevent interference with the transportation of airplanes across the new bridge and avoid impacts to airport operations. Ms. Karen Waiter, Muckieshoot tribal biologist, recommended that species of willows (e.g., Salix spp.) be incorporated into the proposed shoreline restoration design. Based on the above discussion, and to the extent possible, willow species that are consistent with plant species recommended for use in and around airports have been incorporated into the planting plan (Sheet 12). Additionally, Ms. Janet Curran, National Marine Fisheries Service (NMFS), indicated during the project pre -application meeting held at the Corps' Seattle, Washington facility on January 12, 2012, that NMFS would prefer that the shoreline restoration area be expanded to include shorelines adjacent to the site along the Lake Washington shoreline east and west of the mouth of the Cedar River_ These shoreline areas are owned by the Renton Municipal Airport and representatives of the Airport have stated emphatically that no additional shoreline restoration will be permitted on their property. The landscape design includes the installation of an engineered soil lift along the OHWM to reduce the risk of erosion while the plants are established. Organic compost soil amendments will be added to the planting soil to provide the best possible growing medium for the establishment of the plants. Organic wood mulch will also be placed on all planting areas to protect the soil from extreme heat, reduce the irrigation demand by limiting evaporation from exposed soil, and reduce soil erosion. A temporary irrigation system will be installed during the initial plant establishment period. A post -implementation maintenance and monitoring plan has been prepared outlining maintenance and monitoring requirements to ensure the long-term success of the shoreline restoration (Appendix C in draft biological assessment). The shoreline will be regraded after removal of the bulkheads and the existing bridge and aprons. Regrading will be accomplished from above the OHWM using excavators and other heavy equipment. The placement of the rock toe will require excavation and placement of riprap and filter stone below the OHWM. Work below the OHWM will occur within a coffer dam or turbidity curtain to minimize and avoid turbidity plumes in the adjacent waters. All material to be placed below OHWM will be clean and free of pollutants. In accordance with Ecology, a water quality monitoring plan will be developed and implemented to insure compliance with state water quality standards_ The first step in the process will be to remove any remaining Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 8 elements of the bulkhead. Existing materials will be excavated to the required elevation and to create the base for the filter stone and riprap_ The filter stone will be placed first and will not be allowed to free fall to minimize turbidity. Riprap will be placed using an excavator followed by the fish mix and upland grading and planting The shoreline will be regraded to a slope of 3:1 and the soil amended to create a suitable planting medium_ A filter fabric fence will be placed along the shoreline and organic wood mulch placed on all planting areas to minimize and avoid erosion during shoreline regrading. Shoreline restoration on each bank of the Cedar River will be accomplished from above the OHWM using excavators to remove debris and to regrade the shoreline to a slope specified in the restoration plans. Top soil, soil amendments, and other material necessary for use in the shoreline restoration will be transported to the site using dump trucks or other heavy trucks. Plants used to revegetate the shoreline will be planted by hand. Conservation and Mitigation Measures Ecology expressed concerns regarding the potential for water quality impacts attributable to project -related activities and will require that Boeing prepare and implement a water quality monitoring plan. Boeing is in the process of preparing the plan, a draft of which will be submitted to Ecology for their review and comment. A final water quality monitoring plan will be prepared incorporating the requisite changes, as indicated by Ecology. In partial response to Ecology's concerns, Boeing has developed specific erosion and sediment control (ESC) measures (Sheets 93 and 94) to minimize and avoid potential water quality impairment attributable to site -related activities. The following ESC measures are intended to be minimum requirements to meet anticipated site conditions. As construction progresses and unexpected seasonal conditions dictate, additional ESC measures may be necessary to ensure complete siltation control on the proposed project site during the course of construction_ The appropriate ESC measures will be implemented, as needed, to protect adjacent properties and water quality. Before beginning any construction activities, establish the clearing limits. All required sedimentation/erosion control facilities must be constructed and in operation prior to land clearing and/or construction to prevent transportation of sediment to surface water, drainage systems, and adjacent properties. All erosion and sediment facilities shall be maintained in a satisfactory condition until such time that clearing/construction is complete and the potential for on-site erosion has passed. Additional measures, such as constructed wheel -wash systems or wash pads, may be required to ensure that all paved areas are kept clean and track out to road right- of-way does not occur for the duration of the project. 2. ESC measures, including all perimeter controls, shall remain in place until final site construction is complete and permanent stabilization is established. : : Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 9 3. From May 1 through September 30, provide temporary and permanent cover measures to protect the disturbed areas that will remain unworked for 7 days or more. 4_ From October 1 through April 30, provide temporary and permanent cover measures to protect the disturbed areas that will remain unworked for 2 days or more. Additionally, protect stockpiles and steep cut and fill slopes if unworked for more than 12 hours. Sufficient cover materials shall be stockpiled on site to cover all disturbed areas. 5. The BMP facilities shall be inspected daily by the contractor and maintained to ensure continued proper functioning. Written records shall be kept of weekly reviews of the EMP facilities during the wet season (October 1 to April 30) and monthly reviews during the dry season (May 1 to September 30). B. Prior to the beginning of the wet season (October 1), all disturbed areas shall be reviewed to identify which areas can be seeded in preparation for winter rains. Disturbed areas shall be seeded within one week of the beginning of the wet season. A sketch map of those areas to be seeded and those areas to remain uncovered shall be submitted to the City of Renton for review. All seeded areas will be mulched. 7. Any area needing ESC measures not requiring immediate attention shall be addressed within 7 days. & The BMP facilities on inactive sites shall be inspected and maintained a minimum of once per month or within 48 hours following a storm. 9. Before any development or construction activities occur, a pre -construction meeting must be held with the City of Renton Public Works design engineer. 10. The boundaries of the clearing limits shall be clearly flagged by a continuous length of survey tape, or fencing, if required, prior to construction and during the construction period. No disturbance beyond the clearing limits shall be permitted, The clearing limits will be maintained for project duration. 11. At no time shall more than 5 inches of sediment be allowed to accumulate within a catch basin/inlet. All catch basins/inlets and conveyance lines shall be cleaned prior to paving. The cleaning operation shall not flush sediment -laden water into the downstream system. 12. Stabilized construction entrances and roads shall be installed at the beginning of construction and maintained for project duration. Additional measures, such as wash pads, may be required to ensure that all paved areas are kept clean for project duration. Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 10 13, Straw mulch for temporary erosion control shall be applied at a minimum thickness of 3 inches. 14. Stockpiles are to be located in safe areas and adequately protected by temporary secured plastic cover, seeding, or mulching. Hydroseeding is preferred. 15. Remove all temporary ESC measures upon project completion. Proposed project changes are summarized in the Table 1. UPDATES TO THE DRAFT BA RESULTING FROM PROPOSED PROJECT CHANGES The following sections discuss changes to the draft BA resulting from proposed changes the bridge design and bridge construction methods. Section 2.2 — Proposed Action Subsections within this section of the draft BA refer to Table 2 (Proposed Construction Methods, Timing, and Schedule). The information provided in Table 2 is no longer valid, and as such, some of the information presented in Table 2 has been moved to and summarized in an updated Table 3 (Proposed North Bridge Replacement Project Summary). Section 3.0 - Action Area Under the current design plan, 24 -inch diameter SPPs will be used to support the temporary trestle and 16 -inch to 24 -inch diameter SPPs will be used to support the temporary work platforms. The piles will be vibrated into place and then will be proofed with an impact hammer. A bubble curtain will be used during impact installation. The underwater action area presented in the draft BA submitted in June 2012 was based on the impact installation of 14 -inch steel H - piles, which were originally proposed as supports for the temporary trestle. The underwater action area is recalculated below to account for the impact installation of 24 -inch diameter SPPs. As discussed in the draft BA, the following assumptions are used in recalculating the underwater action area: • Use of a bubble curtain will result in a 10 dB -reduction in the underwater sound level associated with the impact driving of a SPP; and • The underwater background noise level in Lake Washington is 120 dBRms. According to the Washington Department of Transportation (WSDOT) (2012), impact driving of a 24 -inch diameter SPP results in an underwater noise level of 189 dBRMs_ Assuming a reduction of 10 dBRms when using a bubble curtain, the underwater noise level at a distance of 10 meters (m) from the pile would 179 dBRMS. The distance at which the underwater noise level produced by the impact installafion of a 24 -inch diameter SPP will attenuate to background is: R, = (10 m) * 10(1 79-120r15) = (10 m)*103 g3 = 85,770 m = 3281,326 feet = 53.3 miles i Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 11 Figure 14 in the draft BA will not change because the geography of Lake Washington and the lower Cedar River prevent underwater sound from extending beyond the boundaries as depicted in the figure. Section 5.3.4 — Effects of the Action (Shoreline, Sediment, Substrate, Bathymetry, and Habitat Diversity) Under the revised project plan, the following actions will occur: Regrading and restoration of a total of approximately 8,500 sf of shoreline along 260 If of shoreline (130 If on each bank). This will involve removal of approximately 145 If of treated -timber bulkhead from each side of the channel, removal of approximately 2,234 cy of material from the shorelines, placement of approximately 325 cy of fill along the shorelines, and placement of 650 cy of riprap along the shorelines for shoreline stabilization and protection after bulkhead removal. Restoration will also include planting of 1,795 sf of native vegetation (see revised Table 3). • Disturbance of approximately 23,700 sf of river substrate through pile removal, pile placement, and work within coffer dams. Table 4 of the draft BA indicated 23,556 sf of river substrate would be disturbed. Revisions to the proposed bridge design plans required that the hydraulic analysis and scour study be updated. The revised hydraulic analysis and scour study concluded that the current bridge design is compliant with the Federal Emergency Management Agency's and the City of Renton's floodplain regulations. The revised hydraulic analysis and scour study report is provided as an attachment to this letter. The original report was provided in the draft BA as Appendix E. The original draft BA did not provide specific information regarding shoreline regrading because that information was unavailable. The 90% design plans provided more detailed information about the shoreline regrade (see above — Shoreline Regrading and Restoration). As stated above, Class III riprap (26 -inch to 36 -inch diameter rock) will be placed below the OHWM along the regraded banks on each side of the Cedar River. Riprap will replace the existing treated - timber bulkheads. Based on information provided by the City of Renton and analysis by a hydraulic engineer, riprap is necessary to insure bank stabilization in absence of the bulkheads. This, to a large degree, is dictated by periodic flood -control dredging of the lower Cedar River_ To minimize the negative environmental impacts of shoreline armoring, engineers selected the smallest riprap (Class ill) that would provide the requisite shoreline stability. Additionally, riprap will be confined to the area below the OHWM (Sheet 12), while shoreline above the OHWM will be amended with organic materials to create a suitable planting medium, regraded to a more natural slope (e.g., 3:1), and planted with native and adaptive vegetation. Fish mixthabitat gravel will be placed below the OHWM along the length of the shoreline regradelrestora[ion (Sheets 11 and 12) to help provide better habitat for juvenile salmonids. Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 12 Recognizing the negative environmental impacts associated with shoreline armoring, the proposed shoreline regrade and restoration was designed within the limitations and restrictions imposed by the artificially created lower Cedar River, which is confined by vertical bulkheads and levees. The proposed shoreline regrade and restoration is, by necessity, a compromise that provides both the requisite shoreline stability and improved habitat functionality. The proposed design expected to be a substantial improvement over existing habitat conditions through the: • Removal of approximately 280 If of vertical bulkheads; • Regrading of 260 If of shoreline to a more natural slope of 3:1; • Restoration of 8,500 sf of shoreline; and • Revegetation of 1,795 sf of shoreline with native vegetation. Section 5.6.2 — Effects of the Action (Benthic Fauna) Under the current proposal, the new bridge will be supported by four 4 -foot diameter pre -cast concrete columns on 6.5 -foot diameter concrete drilled shafts. The 8.5 -foot diameter concrete shafts transition to the 4 -foot diameter concrete columns at two feet below the historic dredge depth (Sheet 8). Therefore, the footprint of the 4 -foot diameter concrete columns at the mudline will occupy a total area of only 50.3 sf, as opposed to an area of 75.4 sf that would have resulted if six 4 -foot diameter bridge columns had been used. Thus, the revised design will result in a net gain of 61.5 sf of benthic habitat instead of 36.4 sf as reported in the original draft BA (see revised Table 3). Short-term Direct Effects (Underwater Sound - Puget Sound Chinook Salmon, Puget Sound Steelhead Trout, and Coastal/Puget Sound Bull Trout) As stated above, under the revised plan, the temporary trestle will be supported by 28 24 -inch diameter SPPs located below the OHWM. Additionally, two temporary work platforms will be erected along each bank of the Cedar River and will be supported by a total of 24 to 32 16 -inch to 24 -inch diameter SPPs, with 16 to 24 of these located below the CHWM (Sheets 4 and 5). These piles, to the extent possible, will be vibrated into placed, but will then need to be proofed with an impact hammer. A bubble curtain will be employed whenever an impact hammer is used. The original effects assessment was based on the underwater noise produced by the impact installation of 25 14 -inch diameter steel H -piles. Under the current pian, the underwater noise assessment is based on the impact installation of 24 -inch diameter SPPs, assuming 500 strikes per pile per day and installation of up to eight piles per day. (i.e., 4,000 pile strikes per day). Figure 17 (Underwater Sound Level Thresholds for Behavioral and Injury Effects in Fish) has been revised to account for the locations of the fish behavioral and injury thresholds based on the impact installation of 24 -inch diameter SPPs. The fish injury and behavioral thresholds will Tim Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 13 likely extend further south into the Cedar River and further north into Lake Washington with the use of the 24 -inch diameter SPPs, as can be seen in the summary below: • Injury — peak: 14 -inch H -pile = 0 m; 24 -inch SPP = 5 m; • Injury -- fish 2- 2 g: 14 -inch H -pile = 2 m; 24 -inch SPP = 216 m; • Injury -- fish < 2 g; 14 -inch H -pile = 4 m; 24 -inch SPP = 251 m; and • Behavioral: 14 -inch H -pile = 215 m; 24 -inch SPP = 858 m. The effects determinations for Puget Sound Chinook salmon, Puget Sound steelhead trout, and Coastal/Puget Sound bull trout due to underwater noise attributable to impact pile driving remain the same as stated in the draft BA. Bridge Lighting: Long- and Short -terra Direct and Indirect Effects The draft BA submitted in June 2012 did not address potential effects of bridge lighting on Puget Sound Chinook salmon, Puget Sound steelhead trout, and Coastal/Puget Sound bull trout as no design information was available at that time regarding lighting of the proposed bridge. As described above, both the temporary trestle and new bridge will be equipped with red navigation lights, per U.S. Coast Guard regulations, that will be activated at night. Additionally, both the new bridge and temporary trestle will be equipped with unidirectional LED lamps mounted on the inside of a six-inch high concrete curb on each edge of the bridge deck (Sheets 9 and 10). Deck lighting will also be activated at night. The proposed deck lighting was specifically designed to minimize and avoid light being cast on the underlying aquatic habitat. Because the deck lighting will be recessed on the inside of a six- inch high concrete curb, no light will be cast on the underlying aquatic habitat. Although no studies were found that addressed the potential impacts of red light on aquatic organisms, the red light resulting from the navigation lights is not expected to provide sufficient fight to illuminate the underlying aquatic habitat. Therefore, light produced by proposed deck lighting and navigation lights is not expected to impinge upon the underlying aquatic habitat_ The effects determination for bridge fighting is that it may affect Puget Sound Chinook salmon, Puget Sound steelhead trout, and Coastal/Puget Sound bull trout because: • Suitable migration and rearing habitat is present in the Action Area for each of the listed species; and • Both the temporary trestle and new bridge will be equipped with navigation lights and deck lights that will be illuminated from dusk to dawn. The proposed lighting is not likely to adversely affect Puget Sound Chinook salmon, Puget Sound steelhead trout, and Coastal/Puget Sound bull trout because: T-01 I M"C', Ms. Lori Lull U.S. Array Corps of Engineer January 22, 2013 Page 14 • Deck lighting will consist of unidirectional, low -wattage lamps mounted on the inside of a six-inch high concrete curb, thereby preventing deck lighting from impinging upon the underlying aquatic habitat; and Red light produced by the navigation lights is not expected to be bright enough to impinge upon the underlying aquatic habitat_ The proposed design changes, as described above, are not expected to result in a change in the effects determinations to listed species or their critical habitats, as presented in the original draft BA submitted in June 2012. The proposed design changes to Boeing's North Bridge Replacement Project, as described above, were necessitated, in part, by engineering and geotechnical information that was unavailable when the original JARPA and draft BA were prepared and submitted in June, 2012. Additional design changes were made in response to comments provided by agency representatives. The proposed changes are expected to minimize and avoid potential environmental impacts and potential impacts to listed species and their critical habitats. Should you have any questions or need additional information regarding the project, I can be reached via telephone or e-mail as indicated below. Sincerely yours, AMSC Environment & Infrastructure, Inc. Robert E. Stuart Senior Fisheries Scientist Direct Tel.: (425) 921-4024 Direct Fax: (425) 921-4044 E-mail. bob.stuart@amec.com res pT\boemg tenlonlyl 1160130 renlon north bndgelreporlsya a\r"Sed projecl descripGooUARPA_Addendum_COrps_012213.docx Enclosure: No -rise and Scour Report (12/14/12) — For Corps Submittal Only cc: Mr_ Mark Clement, The Boeing Company Mr. Larry Fisher, Washington Department of Fish and Wildlife Ms. Rebekah Padgett, Washington Department of Ecology Ms. Trina Sunderland, Washington Department of Natural Resources Ms. Karen Walter, Muckleshoot Tribe Project File dit WT TABLES U7 r z w w w z 0 55 w ❑ uj S7 co h - z w U z Q r (7 LIJ a ❑ f- w i7 ❑ m a z 0 ii O Ur O z 0 CL W D U Ix 4 3 ca tf 0 z c to m 0 uw to m 0- ¢� 7, en `o ID 0 0 cm c at m o° c o 0 07 j E �cn p r E E :n cn w c c en o} Q m U c4U m -, ° -uo�Lu 3�qL m 0- N • c� L rr a m C 7>> "xCLw0o"caom a� o [p 7 U O (0 c U C7 Too ]. 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C 0) Co a1 >� 0 0 a] a7 C V a: U.— U N 0 U. U y �. z aCC� Wa m0a mOLL ❑¢ n. w ca. o EL •p CD 22 En cr II II d 0 c m 0 m AM • FIGURES n,,,—�Toesmn XPW—W "To= mrMOVE.0' L tnr-* or VT"4- IN SECTION: NE SECTION: 7 TOWNSHIP: 23N RANGE: 6E SCALE 1'=5,Y I EFICRLCLsriE "'i 13 L-Ap-t ... ...0 . tj:Ct fmwrrm or amuw_ IN SECTION: NE SECTION: 7 TOWNSHIP: 23N RANGE: 6E SCALE 1'=5,Y I EFICRLCLsriE "'i 13 L-Ap-t ... LATITUDE: 47.5005 N LONGITUDE: -122.2159 W TEMPORARY TRESTLE PLAN VIEW PURPOSE: BRIDGE REPLACEMENT NAME: MARK CLEMENT � IN: CEDAR RIVER DATUM: NGVD 29 THE BOEING COMPANY NEARlAT, CITY OF RENTON ADJACENT PROPERTY OWNERS: REFERENCE #: NWS -2011-1101 COUNTY: KING WASHINGTON DEPARTMENT OF NATURAL SITE LOCATION ADDRESS: STATE: WA RESOURCES 737 LOGAN AVE. N. SHEET: 1 OF 14 CITY OF RENTON RENTON, WA 98038 DATE: 01/1812013 ...0 . t-ftcm cu" Ulu C= fmwrrm or amuw_ ORDNAPY +IGH %% ATEH MARIti 15 4F s4CAA (-A-mfr)Gn;TlW-; MILK -11A43 fr TM+a%i1NF r P&r un.7'ro"r. "ALI" OF Dolq gal lr:,4 LATITUDE: 47.5005 N LONGITUDE: -122.2159 W TEMPORARY TRESTLE PLAN VIEW PURPOSE: BRIDGE REPLACEMENT NAME: MARK CLEMENT � IN: CEDAR RIVER DATUM: NGVD 29 THE BOEING COMPANY NEARlAT, CITY OF RENTON ADJACENT PROPERTY OWNERS: REFERENCE #: NWS -2011-1101 COUNTY: KING WASHINGTON DEPARTMENT OF NATURAL SITE LOCATION ADDRESS: STATE: WA RESOURCES 737 LOGAN AVE. N. SHEET: 1 OF 14 CITY OF RENTON RENTON, WA 98038 DATE: 01/1812013 t-ftcm cu" Ulu C= fmwrrm or amuw_ ORDNAPY +IGH %% ATEH MARIti 15 4F s4CAA (-A-mfr)Gn;TlW-; MILK -11A43 OF Dolq gal lr:,4 LATITUDE: 47.5005 N LONGITUDE: -122.2159 W TEMPORARY TRESTLE PLAN VIEW PURPOSE: BRIDGE REPLACEMENT NAME: MARK CLEMENT � IN: CEDAR RIVER DATUM: NGVD 29 THE BOEING COMPANY NEARlAT, CITY OF RENTON ADJACENT PROPERTY OWNERS: REFERENCE #: NWS -2011-1101 COUNTY: KING WASHINGTON DEPARTMENT OF NATURAL SITE LOCATION ADDRESS: STATE: WA RESOURCES 737 LOGAN AVE. N. SHEET: 1 OF 14 CITY OF RENTON RENTON, WA 98038 DATE: 01/1812013 PER 2012 AMSC HYDRAULIC ANALYSIS AND 2006 FES '/ SECTION: NE LATITUDE: 47.5005 N SECTION: 7 LONGITUDE: -122.2159 W TEMPORARY TRESTLE TOWNSHIP: 23N LONGITUDINAL VIEW RANGE: 5E PURPOSE: BRIDGE REPLACEMENT DATUM: NGVD 29 ADJACENT PROPERTY OWNERS: WASHINGTON DEPARTMENT OF NATURAL RESOURCES CITY OF RENTON NAME: MARK CLEMENT THE BOEING COMPANY REFERENCE 9: NWS -2011-1101 SITE LOCATION ADDRESS: 737 LOGAN AVE. N. RENTON, WA 98038 IN: CEDAR RIVER NEAR/AT: CITY OF RENTON COUNTY. KING STATE: WA SHEET: 2 OF 14 DATE: 0111812013 i PILE 1 BRIDGE LE I i _r cii CAI^ i q PILE 2 PI LE 3 PRECAST CONCRETE DECK 1N24x GIRDER (2)W36x CROSSBEAM W/STIFFENERS OHw I R 2elS STEEL PIPE PILE f MUDUNE EL -70ZO CL PILE 4 X SECTION: NE SECTION: 7 LATITUDE: 47.5005 N TEMPORARY TRESTLE TOWNSHIP: 23N LONGITUDE: -122.2159 W CROSS-SECTIONAL VIEW RANGE: 5E PURPOSE' BRIDGE NAME: MARK CLEMENT IN: CEDAR RIVER REPLACEMENT THE BOEING COMPANY NEAR/AT: CITY OF RENTON DATUM: NGVD 29 REFERENCE #: NWS -2011-1101 COUNTY: KING STATE: WA ADJACENT PROPERTY OWNERS: SITE LOCATION ADDRESS: SHEET. 3 OF 14 WASHINGTON DEPARTMENT OF 737 LOGAN AVE. N. DATE: 0111812013 NATURAL RESOURCES RENTON, WA 98038 CITY OF RENTON LAKE WASHINGTON SHORELINE TEMPORARY SUPPORT PILES FOR DEMOLmON OF EXISTING BRIDGE f --- TEMPORARY REACTION PIKES i T i I I � i I EXiST04G BRIDGE I I t>RILLED 5HAF7S I x TEMPOAARY BRIDGE c SCALE 1"=20' TEMPORARY WORK PLATFORM . TEMPORARY WORK PLATFORM PILES I 4PPROACH d �� II 1 ' XISTING APRON (TO BE REMOVED} 'l, SECTION: NE I LATITUDE: 47.5005 N TEMPORARY WORK PLATFORM, f SECTION: 7 ;LONGITUDE; -122.2155 W TEMPORARY REACTION PILES, AND TOWNSHIP: 23N TEMPORARY BRIDGE SUPPORT BRACES -- RANGE: SE PLAN VIEW PURPOSE: BRIDGE REPLACEMENT DATUM: NGVD 29 ADJACENT PROPERTY OWNERS: WASHINGTON DEPARTMENT OF NATURAL RESOURCES CITY OF RENTON NAME: MARK CLEMENT THE BOEING COMPANY REFERENCE #: NWS -2011-1101 SITE LOCATION ADDRESS: 737 LOGAN AVE. N. RENTON, WA 98038 IN: CEDAR RIVER NEARIAT: CITY OF RENTON COUNTY: KING STATE: WA SHEET: 4 OF 14 DATE: 0111812013 - - - , uox 1rI;SO fOM _ TEMPORARY WORK PLATFORM AND SECTION: 7 LONGITUDE: -122.2159 W TEMPORARY BRIDGE SUPPORTS TOWNSHIP: 23N 1. l k-� PLAN AND CROSS-SECTIONAL VIEWS RANGE=: 5E • . g; pF r t* WM%1 FLOW EIEY�L_' 6 1 : L IIF aMdN]fAI1..,.1 IN: CEDAR RIVER DATUM: NGVD 29 c o NEAR/AT: CITY OF RENTON ADJACENT PROPERTY OWNERS: COMPANY COUNTY: KING STATE: WA EMME `- f I'i CFS�R f�f! STAGE�I' - MV OkFMj1Q�tlk >F m av FXM EXIT Bk UMM PER 3 TEMPORARY WORK PLATFORM AND SECTION: 7 LONGITUDE: -122.2159 W TEMPORARY BRIDGE SUPPORTS TOWNSHIP: 23N l k-� PLAN AND CROSS-SECTIONAL VIEWS RANGE=: 5E I PURPOSE_ BRIDGE REPLACEMENT NAME: MARK CLEMENT IN: CEDAR RIVER DATUM: NGVD 29 THE BOEING NEAR/AT: CITY OF RENTON ADJACENT PROPERTY OWNERS: COMPANY COUNTY: KING STATE: WA WASHINGTON DEPARTMENT OF % SECTION: NE' LATITUDE: 47.5005 N TEMPORARY WORK PLATFORM AND SECTION: 7 LONGITUDE: -122.2159 W TEMPORARY BRIDGE SUPPORTS TOWNSHIP: 23N PLAN AND CROSS-SECTIONAL VIEWS RANGE=: 5E PURPOSE_ BRIDGE REPLACEMENT NAME: MARK CLEMENT IN: CEDAR RIVER DATUM: NGVD 29 THE BOEING NEAR/AT: CITY OF RENTON ADJACENT PROPERTY OWNERS: COMPANY COUNTY: KING STATE: WA WASHINGTON DEPARTMENT OF REFERENCE #: SHEET: 5 OF 14 NATURAL RESOURCES NWS -2011-1101 DATE: 01/18120/3 CITY OF RENTON SITE LOCATION ADDRESS: 737 LOGAN AVE, N. RENTON, WA 98038 .°. H:ilit 4sNfFdf'.f 3i�i.ilf:: • 'hEST 61,NK-116 LF C�ITI[{i1[TSIC7l1!'if-xxrr s FI_Li"9E��xt��fWl faF W,P • 7r>C'-' FILTER STCNE - 7"7 f:� YrtOFZE€?IE y DOE 09 EDGE OF pAvt ke['kIT RLN*04Y 1144 SECTION: NE SECTION: 7 TOWNSHIP: 23N RANGE: 5E PURPOSE: BRIDGE REPLACEMENT DATUM: NGVD 29 ADJACENT PROPERTY OWNERS: WASHINGTON DEPARTMENT OF NATURALRESOURCES CITY OF RENTON LME WASW43--0*4 P GEbm3GE MILLED :1`11-FtIc r�:rbs�t� @A.[ICE LAD.Lit- iFleF"7S [i'RS+04D 1?[MM& VOW 6-xNel FIAOF'OSELF OMN _ — E-'s57fk<, 6 -KHEAb —,-- -. CiF.�,71h1'iiY 1116F! Y:h'�'7: RWIM ',1/4 F{i_LOWS Es[t3T#i3 &AKHEAD (t CFu�R Rl'1ET; LATITUDE' 47.5005 N LONGITUDE: -122.2159 W NAME: MARK CLEMENT THE BOEING COMPANY REFERENCE #: NWS -2011-'1909 SITE LOCATION ADDRESS: 737 LOGAN AVE. N. RENTON, WA 98038 SC&LE. ~. i SiiZ' AELttE j�- ELw.k 0! t'AubALtz a EIF603E FLF ra►h[b 6HORE=.t*9 kol-4 CA; F"A.4'EY,F w s i Fit �T�KSIi]I' ; 4F�VE I PROPOSED REPLACEMENT BRIDGE PLAN VIEW IN: CEDAR RIVER NEARIAT: CITY OF RENTON COUNTY. KING STATE: WA SKEET: 6 OF 14 DATE: 09118/2013 = PER 2012 AMEC HYDRAULIC ANALYSIS AND 2006 FIS = MEASURED AT BOTTOM OF GIRDER AT UPSTREAM FACE OF BRIDGE '/, SECTION: NE LATITUDE: 47.5005 N SECTION: 7 LONGITUDE: -122.2159 W PROPOSED REPLACEMENT BRIDGE TOWNSHIP: 23N LONGITUDINAL VIEW RANGE: 5E PURPOSE: BRIDGE REPLACEMENT DATUM: NGVD 29 ADJACENT PROPERTY OWNERS: WASHINGTON DEPARTMENT OF NATURAL RESOURCES CITY OF RENTON NAME: MARK CLEMENT THE BOEING COMPANY REFERENCE #: NWS -2011-1101 SITE LOCATION ADDRESS: 737 LOGAN AVE. N. RENTON, WA 98038 IN: CEDAR RIVER NEARIAT: CITY OF RENTON COUNTY: KING STATE: WA SHEET 7 OF 14 DATE: 0111812013 RMAS Tv. i TO PROPER lyp• aEWM DRUEO SWR. TYP. 1 EL -'85,44 � EOLU1�1 8 X SECTION: NE LATITUDE: 47.5005 N SECTION: 7 LONGITUDE: -122.2159 W PROPOSED REPLACEMENT BRIDGE TOWNSHIP: 23N CROSS-SECTIONAL VIEW RANGE: 5E PURPOSE: BRIDGE REPLACEMENT NAME: MARK CLEMENT IN: CEDAR RIVER DATUM: NGVD 29 THE BOEING NEAR/AT: CITY OF RENTON ADJACENT PROPERTY OWNERS: COMPANY COUNTY. KING STATE: WA WASHINGTON DEPARTMENT OF REFERENCE #: SHEET: 8 OF 14 NATURAL RESOURCES NWS -2011-1101 DATE: 01 11 812 01 3 CITY OF RENTON SITE LOCATION ADDRESS: 737 LOGAN AVE. N. RENTON, WA 98038 c� 1; o ' t 3 •l t 3 1 i 1 i rk Q r i i '1 SECTION: NE LATITUDE: 47.5005 N SECTION: 7 LONGITUDE: -122.2159 W PROPOSED REPLACEMENT BRIDGE TOWNSHIP: 23N LIGHTING RANGE: 5E PURPOSE: BRIDGE REPLACEMENT NAME: MARK CLEMENT IN: CEDAR RIVER DATUM. NGVD 29 THE BOEING NEAR/AT. CITY OF RENTON ADJACENT PROPERTY OWNERS: COMPANY COUNTY: KING STATE: WA WASHINGTON DEPARTMENT OF REFERENCE M SHEET: 9 OF 14 NATURAL RESOURCES NWS -2011-1101 DATE: 0711812013 CITY OF RENTON SITE LOCATION ADDRESS: 737 LOGAN AVE. N. RENTON, WA 98038 0 '/ SECTION: NE LATITUDE, 47.5005 N G' LONGITUDE: -122.2159 W TEMPORARY TRESTLE LIGHTING I� i IVI 1A l Y! w RANGE: SE PURPOSE: BRIDGE REPLACEMENT NAME: MARK CLEMENT IN: CEDAR RIVER DATUM: NGVD 29 THE BOEING NEARIAT: CITY OF RENTON ADJACENT PROPERTY OWNERS: COMPANY COUNTY: KING STATE: WA WASHINGTON DEPARTMENT OF REFERENCE* SHEET: 10 OF 14 i NWS -2011-1101 DATE: 01/1812013 CITY OF RENTON SITE LOCATION ADDRESS: 737 LOGAN AVE. N. ' RENTON, WA 98038 I{ 1 �E 0 '/ SECTION: NE LATITUDE, 47.5005 N SECTION: 7 LONGITUDE: -122.2159 W TEMPORARY TRESTLE LIGHTING TOWNSHIP: 23N RANGE: SE PURPOSE: BRIDGE REPLACEMENT NAME: MARK CLEMENT IN: CEDAR RIVER DATUM: NGVD 29 THE BOEING NEARIAT: CITY OF RENTON ADJACENT PROPERTY OWNERS: COMPANY COUNTY: KING STATE: WA WASHINGTON DEPARTMENT OF REFERENCE* SHEET: 10 OF 14 NATURAL RESOURCES NWS -2011-1101 DATE: 01/1812013 CITY OF RENTON SITE LOCATION ADDRESS: 737 LOGAN AVE. N. RENTON, WA 98038 T �r.t rt�cr�rV;!€int t€F'' N'Z:; t cFSii`t: it {C' k;�44U'i "--°�-`ttA$4�JW1lcW' RiPRf3, LATITUDE: 47.5005 N LONGITUDE: -122.2159 W -- _ SE. CIA CMOS PURPOSE: BRIDGE REPLACEMENT 11{f- IN: CEDAR RIVER -- St, r.J6 1AI NEARIAT: CITY OF RENTON ADJACENT PROPERTY OWNERS: }fNff S'Y COUNTY: KING STATE: WA '-- - REFERENCE #: 7 yf'I I('l.TiysJ :; k•1"ViG — NWS -2411-1101 DATE: 0111812013 CITY OF RENTON SITE LOCATION ADDRESS: - � { 1 R_ i{ i t �€ � , BJL�•{LaJ `C' RC�sli+---'. T -v PWAIN I PLAN3 I 1 � ;t j � a '14SECTION:NE 7 SECTION: 7 TOWNSHIP: 23N RANGE: 5E LATITUDE: 47.5005 N LONGITUDE: -122.2159 W PROPOSED SHORELINE RESTORATION PLAN VIEW PURPOSE: BRIDGE REPLACEMENT NAME: MARK CLEMENT IN: CEDAR RIVER DATUM: NGVD 29 THE BOEING NEARIAT: CITY OF RENTON ADJACENT PROPERTY OWNERS: COMPANY COUNTY: KING STATE: WA WASHINGTON DEPARTMENT OF REFERENCE #: SHEET: 11 OF 14 NATURAL RESOURCES NWS -2411-1101 DATE: 0111812013 CITY OF RENTON SITE LOCATION ADDRESS: 737 LOGAN AVE. N. RENTON, WA 98038 i C!C F � x I F S £Ni3 11 t,T ;Y SWm N J'.3. T�3 ,J�-.T� �:a✓:- ,1�,-�,�jY _ � . 1�n p s rni :..t. ;,r :SC 4'C f:: - 1%riFk FAFRZ,. N,V [x {d ,F-. 1 i=•< _ tii ,—' � HAMA' FAi'F,I. :sf ,.�� �. c� _� �.5 e� DETAIL -CHANNEL EMBANKMENT ti590 r5 ',.�. f `A. I1 .�€ ^'I USP .r1._ E-L•;{71_rJ '- rUE+AfJ•:v:,ti€ kl✓JrfF �kC.A'iAl K.t¢ ❑F1'S r fgt Rd�zi% F'1k'"_UEti7• TTv --c—It I`—�t %i:STT.^.N !; - ._.., '_ :, i• `� SYAi'�'i �'�AI'J4,hV{1F NC[iflfl.sl.,,.(uk� 14AIf J,16't �'f!1w57iy I.ily4, '� fr.i.>{i'iY a UESI_HAV-.EA CALSPOO�k r GAIL COVT r Ou 2 1= O -c, SIrSALL FLOWERED LCIPIN YCCu-t �vGr:C�•-S ? `JC Y 4E k-' LJpf'+i;` SLY"Rf(rif.°.-r�: € FIF'Atgri•: s!t:3Y�h� >;F:; Ai i:=:iRi..o7/ �:P;f. :'.. Pf"sr.�?=%ii $�€fr :'_ F;O",.,'AAJf:R Fff Yn't N VAP.ifl ICU 11.9' A: UMPEAy F{�f Or €N-NIPAPY F KrI `J 1: ire A! FL;�E OF F4�1Y,35,E6 ePIUM DETAIL -CHANNEL EMBANKMENT ti590 r5 ',.�. f `A. I1 .�€ ^'I USP .r1._ E-L•;{71_rJ '- rUE+AfJ•:v:,ti€ kl✓JrfF �kC.A'iAl K.t¢ ❑F1'S r fgt Rd�zi% F'1k'"_UEti7• TTv PURPOSE: BRIDGE REPLACEMENT DATUM: NGVD 29 ADJACENT PROPERTY OWNERS: WASHINGTON DEPARTMENT OF NATURAL RESOURCES CITY OF RENTON NAME: MARK CLEMENT THE BOEING COMPANY REFERENCE #-. NWS -2011-1101 SITE LOCATION ADDRESS: 737 LOGAN AVE. N. RENTON. WA 98038 IN: CEDAR RIVER NEARIAT_- CITY OF RENTON COUNTY: KING STATE: WA SHEET: 12 OF 14 DATE: 0111812013 PLANT MATERIALS SCHEDULE SYAi'�'i �'�AI'J4,hV{1F NC[iflfl.sl.,,.(uk� �17'CyE (1,_,� �'f!1w57iy I.ily4, '� fr.i.>{i'iY a UESI_HAV-.EA CALSPOO�k T, f ICC H ,W PASS GAIL COVT r Ou 2 1= O L:1P11.U! : RXITC N.1!-, SIrSALL FLOWERED LCIPIN GAL CC -4'1 ? `JC Y 4E Q LJpf'+i;` SLY"Rf(rif.°.-r�: LARGE LEAF LU('IN G-,`_ CON1 S' 4C A' 44 PHILADEt_Pi-US LE'MD. ),SCI? O-RA14CE G -i_ Cr -10 ;' UC ?C• `2 plll'SCKhf'. f=1:5 w.R�ITkTug Fn>_^1+1€: NIN[:Fv4w, 0 `,4JX :MCh•f.No'5% !;FM WtIl IDH 1 Grw "G'":f c' OC `D' ? C• "PIRL_a El_ LULFOL1= SH0,1Y _EAF Sr!R_lEA t f�4L C6(4T 2' CI 2' h7 SP RA1s 110u, AS S'P1PEA I CAL CLW1 a' Of: II (vi til>Sh:J,S SA'.Ik Fes."_Rktta 1<4DKE?5 WJLC,-r i' -t' S'R.T J PCR Lf Ip' ijf CF .`177 LF) Y, SECTION: NE - SECTION: 7 LATITUDE: 47.5005 N PROPOSED SHORELINE LONGITUDE: -122.2159 W RESTORATION TOWNSHIP: 23N CROSS-SECTIONAL VIEW PURPOSE: BRIDGE REPLACEMENT DATUM: NGVD 29 ADJACENT PROPERTY OWNERS: WASHINGTON DEPARTMENT OF NATURAL RESOURCES CITY OF RENTON NAME: MARK CLEMENT THE BOEING COMPANY REFERENCE #-. NWS -2011-1101 SITE LOCATION ADDRESS: 737 LOGAN AVE. N. RENTON. WA 98038 IN: CEDAR RIVER NEARIAT_- CITY OF RENTON COUNTY: KING STATE: WA SHEET: 12 OF 14 DATE: 0111812013 f PCi'S ;E y1SF"LES. F1RE POAaS ov [41;i'Se.E3ii TLS r`71,:k 'AE ". 10 Pv§45 SILT Eh 'M NOTES: 1 Nh'NIUb 1',.1' T� fS K,lu TRUND, NATNE SAIL 06 . WtSHr" 'UAY 7'A4'A%x POS rT CL rLH;f Pa KKAX. i;k tom'';....:., F T[F. FAFf C FFN[L''a SRk;[ B: M741f,.v N..f. 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PAST LISNF *f-AVi-BUTY WIRE S'W"15 Al LDS. 1. -IN' -H 0!03, TIE 1WPES. !1F HX Rlk,",S PHr 'AIRE SHALL EXTEND NIC, THE TPENCH A FA14J1tJM ;JF A -O,' AND %- U=. o f EKTEN3 MORE THAT 3-%l Aif.nVE T) -E CRC.144 :;ql c S STAT: JbFD SIRE4;T" nLTiR FAY1," S -V L B: 9*'LEQ 4R VREU 10 THi P0515. AVU 14' 8-311 OF lK =A =C SIAL BE C7?ENDEU KIT -fE TRENCH. Thr FABRIC SA&LL. Nr EYTEND MN;� 1AM4 3 -FT AHS., TH[ '`PG; AL SURFACE. FILTER FAB"C 5-vd-L iFJT BE SIAPLEC KTD TREES T -i,, T Ir;.rl �,AJ L 5£ T"{L.LtC� WITH VA'ER AL OR 3/A -!N TO 312 -IH VASFLD ;,A*TL, 8 �U[R FaiiRIC 5;,14U.S 9 -ALL PE REWC,ED WHEN THEE HAVE SERV7DG TNEIR ULIFTL PL'RPOGF. YT, rffT B-TCfRE TH lJsytc -Q'E AR.EA PAS BLF14 PrMANENTLT SIAB1?r-,i 5 Pt}KOW 0AfrENGHCF IIF Af:L':iRLQrU 11TH S7AW2A;n SPECIM€ 4T�Y4 8-UI.X1S1 , Ail- - SILT ENCE A SG:LE: t:TS r,:ls '/. SECTION: NE LATITUDE: 47.5005 N SECTION: 7 LONGITUDE: -122.2159 W EROSION CONTROL MEASURE TOWNSHIP: 23N SILT FENCE - TYPICAL RANGE: 5E PURPOSE: BRIDGE REPLACEMENT DATUM: NGVD 29 ADJACENT PROPERTY OWNERS: WASHINGTON DEPARTMENT OF NATURAL RESOURCES CITY OF RENTON NAME: MARK CLEMENT IN: CEDAR RIVER THE BOEING COMPANY NEAR/AT: CITY OF RENTON REFERENCE #: NWS -2011-1101 COUNTY: KING STATE. WA SITE LOCATION ADDRESS: SHEET: 13 OF 14 737 LOGAN AVE. N. DATE: 0111812413 RENTON, WA 98038 i l:d�i �l= kliD i't"fi'?•": k�\ Yr H!,N &1157 �,,A7 T,4.i. E o� TPN+ CiCTCK?!ti v.TKf.vd fipkM xEIA Plir; CAkl nr41Cr IR[t % SECTION: NE SECTION: 7 TOWNSHIP: 23N RANGE: SE PURPOSE: BRIDGE REPLACEMENT DATUM: NGVD 29 ADJACENT PROPERTY OWNERS: WASHINGTON DEPARTMENT OF NATURAL RESOURCES CITY OF RENTON _ 3t`lty — r SvFkss TY: 44 _ 7It h r 7. i'✓ E'i S ti'. ? 1W e:Z ulh,- PAA i bAl-;q tll *1nm R{'.,£1 Sl S'T4 (00FRI Cw N1=Af4) 7FC Rmc"L S'mm wu97 Ht7Ai',-.. `l R!{ Fo.,, 7A;i<U1 =Hr ",li ml MA". 4, 4 ri5rri7 flit FS Kl= TNC 51%ky:Ri' SFC'Ifi^k`ij!1 R -Qt ✓itl Eck 51 WS 4:'G35 LATITUDE: 47.5005 N LONGITUDE: -122.2159 W NAME: MARK CLEMENT THE BOEING COMPANY REFERENCE #: NWS -2011-1101 SITE LOCATION ADDRESS: 737 LOGAN AVE. N. RENTON, WA 98038 EROSION CONTROL MEASURE INLET PROTECTION IN: CEDAR RIVER NEARIAT: CITY OF RENTON COUNTY: KING STATE: WA SHEET: 14 OF 14 DATE, 01 /1 812 01 3 Pr!?Iect Title Boeing N orth eridga Rep' lac;ema nt Proje<t - Cedar River P i le infor matic n (size, type, 24 -in dam. SPPs intstMied wi��h: a impact, harnmer number, pile strikes, etc-) revs sf- w"" . . ....... . .... .. •"A . Acoustic Metr-i_- pea�k SEL I RMS Effective Ouie" sirs- strike knvel fd9l If0easured sin 150 4!M= ID�5!ance IM) A lEstimated nUMbeT e4 strikes Cumulative SEL at measured red distance Mstanse (m) to threshold onse, & phylsiGB3 Injury Behavior Peak Cumulative SEL dB" RMS diB Fish :- 2 a Fish � 2 a dB JTra.rxamission losr. coniaartl 115 if unkncawn't 206 187 183 150 O O This calculation assumes that single strike SELs < 150 dS do not accumulate to cause irqury (Effective 1XI Notes (sou rev fcw estirnalles, otc') Noise attenuation includes pile ca;ys and hu We curtain, 500 bowWWJe and 8 pike-AsAday tt Cc Z D 0 ca Z CZ UNDERWATER SOUND LEVEL THRESHOLDS FOR BEHAVIORAL AND INJURY EFFECTS IN FISH Boeing North Bridge Replacement Project Z Renton, WA X S)r RFS Date 01118113 w No.LY1 1160130 Z LU 0 S9 Aff"AffifAV" amec19 Figure 17 & STANDARD STREAM STUDY NARRATIVE AND HABITAT DATA REPORT Boeing North Bridge Replacement Project (Corps Ref. No. NWS -2011-1101) Renton, Washington Prepared for: The Boeing Company Renton, Washingtone Prepared by: AMEC Environment & Infrastructure, Inc. 3500 188th Street SW, Suite 601 Lynnwood, Washington 98037 (425) 921-4000 December 2012 Project No. LY11160130 ameO W1 H m H x W City of Renton Piannirg Division DEC',g0«rtt 4,eas 7, +'_95 -Remcved Areas i35 + },2e0+ 351 ACRES) SCALE �"- 30' (VJHCN PRIMED ON I7 X77) Figure 2. Impervious Surface N w ca H 2 x W Memorandum Date: February 25, 2013 City of Renton Pl,a nninq Dtv'sion FEB 2 5 2�11i HEMMED Subject: The Boeing Company Request for Temporary Variance from the Noise Ordinance for the Cedar River North Bridge Replacement Project From: Mark Clement, Boeing Permit Administrator To: City of Renton Director of Development Services Neil Watts CC: Vanessa Dolbee Senior Planner The Boeing Company is submitting a request for consideration by the City of Renton Department of Community and Economic Development for a variance from the Noise Ordinance to perform 180 non- consecutive nights of construction work in the year 2013. The request includes weekdays, Saturdays, and Sundays. The project is to replace the North Bridge over the Cedar River at Boeing's Renton Facility. The North Bridge is adjacent to the Renton Municipal Airport runway and is located at the mouth of the Cedar River, directly before it enters Lake Washington. The project is located in an industrial zone and is not within 300 -feet of a residential area. Work in 2013 is scheduled to start April 15th, which will include installation of work platform and new temporary bridge, demolition of the existing bridge, and start of construction for the replacement bridge. This project is extremely critical to the business operations of Boeing Commercial Airplanes in Renton. On a daily basis, production aircraft assembled in the Renton factory must be transported across this bridge to the Renton Municipal Airport where they undergo final preparation and testing before take -off. There is no alternative means to transport aircraft from the factory to the airport. Loss of function of this bridge would disrupt production, resulting in economic losses and impacts to employment, Environmental considerations limit all in -water work to a short window in the summer that coincides with the peak season for operations at the airport. Because of the proximity of the project to the Renton Municipal Airport, construction activities have a significant impact on airport runway operations. Therefore, to rnect project construction timelines and to reduce economic impacts to airplane deliveries and Renton Municipal Airport operations, an allowance for nighttime work is critical. M rl H H m H X W MEMO: Boeing Renton Cedar �xiver North Bridge Replacement Project Date: February 25, 2013 Page 2 The Boeing Company proposes the following measures to minimize noise impacts. Proposed Conditions of Noise Variance: All vehicles must be equipped with ambient sensitive back-up warning devices. The contractor may use back-up observers in lieu of back-up warning devices for all equipment except dump trucks in compliance with WAC Chapter 296-155-610 and 296-155-615. The contractor may use back-up observers and back-up warning devices for dump trucks in compliance with WAC Chapter 296-155-610. 2. Truck tailgate banging is prohibited. All truck tailgates must be secured to prevent excessive noise from banging. 3. Construction and Stationary equipment, such as light plants, generators, compressors, and jackhammers shall utilize noise mitigation shields, noise blankets, skirts, or other means available. 4. A copy of the noise variance or exemption will be kept on the project site at all times. 5_ Boeing will provide a 24 hour answering service as well as a list of designated contact persons for the purpose of forwarding noise complaints. 6. Initial citizen concerns shall be responded to within 48 hours by the designated contact person. If the same citizen continues to have noise concerns, then the contractor may be required to provide additional mitigation measures. Any unwanted material will be removed from the site by sweeping. No scraping activities shall be performed during noise variance hours. MEMO: Boeing Kenton Cedar ,xiver North Bridge Replacement Project Date: February 25, 2013 Page 3 High Iimpact Pile Driving schedule is as follows • May 161h through September 1s12013 (Approximately 20 days) • June 1,t through August 312014 (Approximately 20 days) Peak noise levels are expected to range from 75 to 85 dBA as perceived at 50 feet, similar to a power mower passing by. Any impact pile driving, demolition impact devices, and other activities anticipated to exceed these noise levels will be limited to daytime hours of 7:00 a.m. to 10:00 p.m. Equipment to be used for nighttime work activities in this project will include, but are not Iimited to: 1. Saws 2. Air compressors 3. Trucks 4. Light plants 5. Generator sets 6. Sweepers 7. Drilling machines 8. Dump trucks 9. Cranes, track and tired 10. Excavators, dozers 11. Pneumatic tools 12. Concrete mixer and pump trucks 0212512013 Shared Services Group Site Services North Cedar River Bridge Replacement project February 2013 V F- m X W Project Overview • Existing Conditions ■ Construct Temporary Bridge ■ Demolish Existing Bridge -Construct New Bridge • Project Constraints Existing Bridge Conditions 1944 Construction 1969 Construction • 2009 repairs ldeniified high structuraf issues • Bridge is a critical path production component (no ahernatp route) • Damage or loss poses economic risk and employment impact to City, County, and State I 02125/2013 PA Lake Washington f ------ - - - - - - - - - WingspanLimits ,.�,.......__..�_,.__ i OHW/100,YrHo0d Elevation Follows Existing Bulkhead "eLleslkll� ire Existing Bndge7 -`�-- f. 1 Lake Washington 014WIM Yr Flood Elevation ' r} Follow Existing Bulkhead 15 a • r Temporary 5upport:,3,_ V„ 4Y ,'or€xrstin98ridge'. w w . w- n3n,,:3rr,,;;. ��rfrouiidatiotls 'Shah, Bridge Approach i Relrwve Existing Apron Temporary Bridge Approach N IemporwyBridge ., I'iies6utsldeOHW ` IEaSt Side Only) KI ' CnnslruRTempnrary6ridge , demolish - - - =Pemokrwn Apron Columns �� n acr,� canitnalion -Iempatary Work Platrmm M = Eusting CuPd,t_ons I Ceder River !''�On51Rll'tCd Remove Existing Apron Temporary Work Platform ChannelRe-grading and Bank Restoration Temporary Bridge Approach , s ,..' Z' � ,v r {�f15t111� rlJl-I �- ^: Wingspan Limits yruJ �xlArmdllian '. Cedar River A, fiwCuustrurr:ou Trmparary Work Platform �-Exlstmg Condmons �-CPrKtrurtert f. 1 Lake Washington 014WIM Yr Flood Elevation ' r} Follow Existing Bulkhead 15 a • r Temporary 5upport:,3,_ V„ 4Y ,'or€xrstin98ridge'. w w . w- n3n,,:3rr,,;;. ��rfrouiidatiotls 'Shah, Bridge Approach i Relrwve Existing Apron Temporary Bridge Approach N IemporwyBridge ., I'iies6utsldeOHW ` IEaSt Side Only) KI ' CnnslruRTempnrary6ridge , demolish - - - =Pemokrwn Apron Columns �� n acr,� canitnalion -Iempatary Work Platrmm M = Eusting CuPd,t_ons I Ceder River !''�On51Rll'tCd Remove Existing Apron Temporary Work Platform ChannelRe-grading and Bank Restoration Temporary Bridge Approach , s ,..' Z' � Shared Services Group I Site Services r - f Lake Washinyten r! 'rlri � �i'hrl I :�pemanan \�=Achive ConstruAiars ��;=Temprnary Work Platbrm ' �=(xrsting CaMlitions =Corswt tod ................................. Shared Servhs Group I Site $ervtces �y +UemnGtion '; \ � Active Construction Temporary Work Platform = P.>r,'C" Condili*A* 0 =constructed r Temporary Bridge Cedar River 4Pie43 CEPier.4 Drtven Piles Above OF W take Washington Mngspan L imits I L Temporary Bridge Winyspan Llm1its T Cedar River Shared Services Group ! Site Services Channel Re-gradind�I and Rank Restoratia Temporary Woric;-7 PlatformPiles, Typ.- MI e Demnrhiofs \� =Active Construction =7emprxary Work Walfarns M - Eximng Condtlnns = Corntructed IJ�t�' !lJ Pier I Pier 2 =DenroBnon \\-ActK*canstwion '� _7emporary Wark Platlorm = Eylstlng Condn;ans $ c ' Conslrucbed t .a Lake Washington Cedar diver Lake Washington rLPier 3 I: ITe.poraryBrfdge... Superstructure Cedar River ' Shared Services Group I Site Services . 1 Lake Washington O 1>i .'I i tPier 2 4-riur ? 4.Prer 4 i Wes*. Channel Re-yrac}ing 1 1 _� 6arekRestoratiorl'I-•`.-. - 1 :.. - _��H}`�#,"-t.•� LSpan2r'` East Cirarnie[ i f . Remove Temporary Span 4 Bridge Re -grading and 'Bank Restoration ' f, \� m Arrive[nnstnetian T .. '_.-rmpnraryWork Platform CedarRiver y Errstrng Condnrons i-CamuucreA ,= Shared Services Group I d' Lake Washington r Wingspan Lin,.i'. yPmrj ---_ r4Yier2 kIPier3 West Channel Re-Wadirg and dant 3mestoraiion l.-Temporarc _Ea;t Channel Spcn t :flemofilbn RankRes'n y ' q-ActiveCamt ubcn 3 ._ 4 ., Temporary Work PlaHcrm - Cedar River Lrislmg Conditions Section Temporary Bridge Pile 2 • Pile Length = 86.00' ■ 24" Pipe Piles • Precast Deck Panels • W24x Steel Girders ■ W36x Steel Crossbeams with Stiffeners • Bolted Connection to Top of Pile Section Permanent Bridge - Precast Concrete Deck W24xGirder 12)W36x Crossbeam -w/Stiffeners ;--oHW _ _--724"o Steel Pipe Pile M udline 3 14 02/25/2013 7 Precast Comrete Deck • Shaft Length = 85.00' i Steel Plate Girder • 6'— 6" Drilled Shafts O"W • 4'— 0" Precast Columns ! • Steel Plate Girders depth PCColumn ' i l Pre Stressed paries 2'-6" to 1'-0" 7YP I Precast 1 ci Crossbearn • Pre -stressed Precast Crossbeams —Backfill as Required7yp.1 • Precast Concrete Deck Shim PC .. 'L ; j Seal,ryP_ • 24" Pipe Piles filled with to Proper € Shim to Proper pvp!ed Snaft '. concrete at abutments Elevation. 7YP �q l Elevation i Column A �Cdu, B 14 02/25/2013 7 Access for Plane Crossing Temporary Bridge Crossing During Construction of New Bridge Now - m : , ' Storage Area, WiBridgeng Span Paih � _ E.Temporafy f j Cedar River 02/25/2013 8 02/25/2013 I!] Permitting Shared Services Group I Sde Services ■ JARPA - Boeing • Biological Opinion - Boeing consultant • HPA (Hydraulic Permit Approval) - Boeing ,consultant ■ Access Agreement (DNR) - Boeing ,consultant • DOE Water quality cert /ZCM ■ Building Permit - Boeing • Land Use /Shoreline Permit - Boeing ■ Electrical Permit - Contractor ■ FAA Permit -- Boeing consultant 19 Construction variables ■ Construction Duration Approximately 2 Years, 8 Months ■ Three Fish Windows ■ Equipment Height Restrictions ■ Plane Crossing Access - 9+ per day 20 02/25/2013 10 Vanessa Dolbee From: Steve Lee Sent: Tuesday, February 19, 2013 4:42 PM To: Vanessa Dolbee Cc: Ronald Straka Subject: Addenda to Joint Aquatic Resources Permit by the Boeing Company Fallow Up Flag: f=ollow up Flag Status: Flagged Vanessa, We have reviewed the January 22, 2013 revised letter written from Boeing's consultant, AMEC, to the Corps of Engineers Regulatory Branch and have the following for you to follow up on: The Surface Water Utility did not state the requirement for the use of riprap (page 6 of Addenda in the Shoreline Regarding and Restoration Section) for the portion of the project Boeing is proposing to remove portions of the bulkhead to be used as part of their restoration area outside the limits of their project. The current bulkhead does provide some bank stabilization and the removal of that structure would result in some sloughing which Boeing's consultant needs to plan on preventing. Please check with the Airport and Parks to make sure they did not make that comment about the City requiring armoring of the toe. From what is proposed in the AMEC addenda, it also appears they are armoring more than just the toe but all the way up most of the slope face. The tone that the AMEC addendum states the City 'requiring riprap' does portrays the City in a negative manner that may rebound back to our future permitting needs. You may want to talk to Boeing and the Corps personally about this item after finding out from the Parks and Airport who told AMEC about the riprap requirement. • The remainder of the document appears to be fine and the AMEC hydraulic study appears to be consistent with the proposed 90% plans. Thanks, Steve Lee Memorandum Date: February 25, 2013 City of Henton piarrnii�q Division FEB 2.5- 201.5 Subject: The Boeing Company Request for Temporary Variance from the Noise Ordinance for the Cedar River North Bridge Replacement Project From: Mark Clement, Boeing Permit Administrator To: City of Renton Director of Development Services Neil Watts CC: Vanessa Dolbee Senior Planner The Boeing Company is submitting a request for consideration by the City of Renton Department of Community and Economic Development for a variance from the Noise Ordinance to perform 180 non- consecutive nights of construction work in the year 2013. The reriucst includes weekdays, Saturdays, and Sundays. The project is to replace the North Bridge over the Cedar River at Boeing's Renton Facility. The North Bridge is adjacent to the Renton Municipal Airport runway and is located at the mouth of the Cedar River, directly before it enters Lake Washington. The project is located in an industrial zone and is not within 300 -feet of a residential area. Work in 2013 is scheduled to start April 15th, which will include installation of work platform and new temporary bridge, demolition of the existing bridge, and start of construction for the replacement bridge. This project is extremely critical to the business operations of Boeing Commercial Airplanes in Renton. On a daily basis, production aircraft assembled in the Renton factory must be transported across this bridge to the Renton Municipal Airport where they undergo final preparation and testing before take -off. There is no alternative means to transport aircraft from the factory to the airport. Loss of function of this bridge would disrupt production, resulting in economic losses and impacts to employment. Environmental considerations limit all in -water work to a short window in the summer that coincides with the peak season for operations at the airport. Because of the proximity of the project to the Renton Municipal Airport, construction activities have a significant impact on airport runway operations. Therefore, to meet project construction tintelines and to reduce ec0120172ic impacts to airplane deliveries and Renton Municipal Airport operations, art allowance for nighttime work is critical. MEMO: Boeing Renton Ceda; river North Bridge Replacement Project Date: February 25, 2013 Page 2 The Boeing Company proposes the following measures to minimize noise impacts. Proposed Conditions of Noise Variance: 1. All vehicles must be equipped with ambient sensitive back-up warning devices. The contractor may use back-up observers in lieu of back-up warning devices for all equipment except dump trucks in compliance with WAC Chapter 296-155-610 and 296-155-615. The contractor may use back-up observers and back-up warning devices for dump trucks in compliance with WAC Chapter 296-155-610. 2. Truck tailgate banging is prohibited. All truck tailgates must be secured to prevent excessive noise from banging. 3. Construction and Stationary equipment, such as light plants, generators, compressors, and jackhammers shall utilize noise mitigation shields, noise blankets, skirts, or other means available. 4. A copy of the noise variance or exemption will be kept on the project site at all times. 5. Boeing will provide a 24 hour answering service as well as a list of designated contact persons for the purpose of forwarding noise complaints. 6. Initial citizen concerns shall be responded to within 48 hours by the designated contact person. If the same citizen continues to have noise concerns, then the contractor may be required to provide additional mitigation measures. 7. Any unwanted material will be removed from the site by sweeping, No scraping activities shall be performed during noise variance hours. MEMO: Boeing Renton Ceda; Diver North Bridge Replacement Project Date: February 25, 2013 Page 3 High Iimpact Pile Driving schedule is as follows • May 161h through September 1st 2013 (Approximately 20 days) • June 1st through August 312014 (Approximately 20 days) Peak noise levels are expected to range from 75 to 85 dBA as perceived at 50 feet, similar to a power mower passing by. Any impact pile driving, demolition impact devices and other activities anticipated to exceed these noise levels will be limited to daytime hours of 7:00 a.m. to 10:00 p.m. Equipment to be used for nighttitne work activities in this project will include, but are not limited to: 1. Saws 2. Air compressors 3. Trucks 4. Light plants S. Generator sets 6. Sweepers 7. Drilling machines 8. Dump trucks 9. Cranes, track and tired 10. Excavators, dozers 11. Pneumatic tools 12. Concrete mixer and pump trucks J�L""WZ -- Shared Services Group Site Services North Cedar River Bridge Replacement project February 2013 v.a..i..hp �q �.y.p��a Ca•pwr �a1+9ba NI I &ww YMAam�w] Project Overview • Existing Conditions -Construct Temporary Bridge ■ Demolish Existing Bridge ■ Construct New Bridge • Project Constraints A 7. 02/25/2013 1 Shared Services Grow I Site Services 0 1 R LAKE 6.1s1, ,,, .e WEST 'ACST EAST EAST APPROACH APPROAOR 3SMN RRICGE EfwGE /PPROACN RUNAA, WESt APR6N �, - EABThPRON PR,OQUCT101rf11 CE6AR RIPER Pm' 1" 1. •; } i•r..i i... tr. -. .- lit_ ftftftl kfm Lake Washi"ton ORM 100 Yr Flood Elevation follows Existing Bulkhead V Remove -001 mc -l" r Existing Apron =pemokt- �l AC*-CLNtnKrpn Cedar River =Temporary Work FWkem - Existing Cooftws �-Carrsb:xted :]YOf PSiCi Of NWRdPc:iR,:..: . l iu,rNER aur i� Remove Exlsdng " Apron Temporary Bridge h Approach Temporary Bridge Piles Outside QHW - r (East Side Only} i Al Cake Washington - �WingSpanLimits �--------"- r!� ' OHW,+I OO Yr Flood Elevation Follows Fxlstmg Bulkhead �. _ Remove _- J Existing Apron =bernaw n ��=Ar4ve Constrtxtiort Temporary Work Platform _ Exiting Cond[,ens —C'J teJ led Shared Services Group I Site Servi Temporary Support for Existing Bridge ' ingspan Limits Cedarniver CakeWashington 0HWfl00-Yr flood Elevation — fo€lows Existing Bulkhead Shaft, RemoveEkisting Apron `Temporary Bridge F Approach Temporary Bridge Piles Outside OHW (East Side Only) TO r 3 BricigeApproaeh-gum Z r x ll `�' ConstrucTTemptxaryBridgr � �� Den Apron spef„nyt;a„ - ApronCotumns 1\ = Acbw ConstWion - =Temporary Work PWatfoem { � - ExWirg Conditions Cedar River Construrted Remove Eldsting Apron TemporaryWork Platform ChannelHe-grading - and Bank Restoration Temporary Bridge �.-- Approach 1_141 i �t Shared Services Groupe Site Services Shared Services Group j Site Services r Lake Washington f/ Magspan thnits C{Pier 3.Pier.4 - ;y lhiuen Files Above Ot;W SERE,N WIN 1 TemP.BridgeTowFagj _ tr. Temporary Bridge! -' Wingspan Limits =DemnGrion _ �. j� - ..A,ctiWconstructlan . Temporary Work Platform ��Exkstlng CaMktions Cedar River - Cansnuctetl Lake Washington Pm r.1 F/ a �LPoera �Picr3 i , Driven Piles Above 0" $ sr. r' I JJ 3 w TemporaryBridge � = Active Comi—tian Y's - - Temporary Wor3c Nattorm i �- E>tisnng Candnrons Cedar River ..r = Constructed Shared Services Group j Site Services r Lake Washington f/ Magspan thnits C{Pier 3.Pier.4 - ;y lhiuen Files Above Ot;W SERE,N WIN 1 TemP.BridgeTowFagj _ tr. Temporary Bridge! -' Wingspan Limits =DemnGrion _ �. j� - ..A,ctiWconstructlan . Temporary Work Platform ��Exkstlng CaMktions Cedar River - Cansnuctetl ces Group ( Site Services F I Lake Washington - J/� action f Drilled5hafts r- BelowDHW - _ Pier 2 4Pier 3 �,PiF,p;S .� €: fte-gradirvg ChannLTRe-' ding— � and .IN"Restorativn and Rank Restmati 'li""'^"` _ -'j Pder2- Crossbeams -Pier ..,' Ternporarylvark r _ ,�---- Platforrn Piles,Typ, - bemobdori MN=Arti- [ansae l— T - =Temporary Wad Platrorm Cedar River �= Existing Corrditrons =Constructed r Lake Washington f_�.7 a6Picr7 'Oier2 CL Pier �Pei-0 2 I ��=Artive ConsWcTor+ =Temporary Wah PCatlnrn, Cedar River Disdng Cerwftons -Consiructed Shared Services Croup Site Services �IPicr l r�{{ Pirr 7 �., West Chan ' I" cirading an _ _ Bank Restoration tSpan 2 _Span 7 . =demditian . \\-Artise [ansIrwtion -^ =Temporary Wort Marro— = Earstmg Coodrtmns 4, Lhs �Yn•r� Remove Tempurary - East Channel Bridge Re -grading and �. f Bank Restoration }� v Cedar River VONA— y.. j Lake Washington Wigspan Limnits .- '--.-- — - — - — - — - — - — - Y- _ .___ Pier 1 f kPier 2 spier 3: i- - t: ! West Channel Regrading and lOlfesloralio Lrgend {lemaiil�an " ��-ACtive Cansrrra[ion ,> =Temporary lMori: Platform sExlqug [ondrtcons -Co truned .v.. rjp-� HI I pant Remove Temporary ....i.i_ East Channel -Span 1 Bridge - Re -grading and ,• BaAk Restoration Cedar River Section Temporary Bridge L ■ 4'— 0" Precast Columns Precast Concrete ■ Steel Plate Girders depth Pile 2 Deck I ■ Pile Length = 86.00' 1.._____..__i._ € I .. Level w24x Girder • Pre -stressed Precast (2)w36x ■ 24" Pipe Piles Crossbeam • Precast Concrete Deck i -w/Stiffeners ■ Precast Deck Panels Clumn to Poroper ■ W24x Steel Girders I olM - -? 24"o Steel ■ W36x Steel Crossbeams Pipe Pile with Stiffeners Mualtne ■ Bolted Connection to Top of Pile �EL I >ax �Pllel rtPile �Pile 3 �Pile4 Section Permanent Bridge Shaft Length = 85.00' 6'— 6" Drilled Shafts L ■ 4'— 0" Precast Columns BackW$ as Required Typ. ii i I ■ Steel Plate Girders depth PC Colum varies 2'-6" to V-0" TYR • Pre -stressed Precast u. Crossbeams L-1 JR:85 • Precast Concrete Deck Shim PC ■ 24" Pipe Piles filled with Clumn to Poroper concrete at abutments Elevation. Typ. Precasr Concrete i � Deck Steel Plate Girder aiw i Precast -� 02/25/2013 7 tC) i Crossbeam `= s o` BackW$ as Required Typ. ii i I Shim Column - i f Sea?,Typ. to Proper Drllled Shah, � Elevation Typ- i L-1 JR:85 Column A 1 4 Column 02/25/2013 7 02/25/2013 Access for • • Existing Bridge Crossing During Construction of Temporary Bridge Shared Services Group I Site Services Lake Washington Wing Span Path MW Existing Bridge {` N BridgeTcnv Path;^' Wing Span Path -' �- Existing Bridge StEri).::i1rv. Cedar River �1 Access for Plane Crossing Temporary Bridge Crossing During Construction of New Bridge 02/25/2013 w 1. all Iij .y 11 1 02/25/2013 w Permitting ■ JARPA - Boeing ■ Biological Opinion — Boeing consultant ■ HPA (Hydraulic Permit Approval) - Boeing ,consultant -Access Agreement (DNR) - Boeing ,consultant ■ DOE Water quality cert IZCM ■ Building Permit - Boeing ■ Land Use /Shoreline Permit - Boeing ■ Electrical Permit — Contractor ■ FAA Permit — Boeing consultant crorcyn omM • v . 19 Construction variables Shared Services Group I � Site Ser� • Construction Duration Approximately 2 Years, 8 Months ■ Three Fish Windows ■ Equipment Height Restrictions • Plane Crossing Access —1+ per day 02/25/2013 10 January22, 2013 Project LY11160130 U.S. Army Corps of Engineers, Seattle District Regulatory Branch Attn. Ms. Lori Lull P.O. Box 3755 Seattle, WA 98124-3755 City of Renton Planning Division FEB 19 2013 H EC EN D Subject: Addenda to Joint Aquatic Resources Permit Application and Draft Biological Assessment -- Revised Project Description and No -rise Report The Boeing Company — North Bridge Replacement Project Renton, Washington {Corps Ref. No. NWS -2011-1101 } Dear Ms. Lull: Since submitting the Joint Aquatic Resources Permit Application (JARPA) and draft biological assessment (BA) for The Boeing Company's (Boeing) proposed North Bridge Replacement Project on June 6, 2012, Boeing's engineering contractor for bridge design has prepared and submitted the 90% design plans for the proposed bridge replacement. The updated plans provide details regarding bridge design and construction that were unavailable last June and also include changes to the design and construction methods that differ from those presented in the JARPA and draft BA. The purpose of this addendum is to update the project description for the proposed project in the JARPA and draft BA so that that they it is consistent with the current design plans. Proposed project changes also necessitated that the hydraulic analysis (no -rise report) also be revised. The five primary elements of the proposed bridge replacement project remain unchanged: • Demolish existing bridge aprons and construct temporary trestle; • Demolish existing bridge; • Construct new bridge; • Remove temporary trestle; and • Construct shoreline restoration. To the extent possible, when describing the changes to the proposed project, I tried to adhere to the order of construction sequencing as presented in the JARPA and draft BA. Some of the changes described below are in response to comments (i.e., vegetation used in shoreline restoration, in -water structures associated with the new bridge trapping large woody debris, and bridge lighting) received from Ms. Karen Walter, Muckleshoot tribal biologist, as well as AMEC Environment & Infrastructure, Inc. 350D 168th Street SW, Sulte 601 Lynnwood, Washington 98037-4763 LISA Tei (425) 921-4000 Fax (425)921-4040 www.amee.com LY 01 Planning DlvisiOn R 1,� V PVI ED Date Aft WTI I M, Ms. Lori Lull U.S. Army Corps of Engineer January22, 2013 Page 2 comments (i.e., use of raw cement to cast bridge deck) received from Ms. Rebekah Padgett of the Washington Department of Ecology. The proposed project changes are discussed in the following sections. PROJECT DESCRIPTION UPDATES: JARPA AND DRAFT BA This section presents changes to the project descriptions for both the JARPA and the draft BA. Demolition of Apron Deck and Apron Piles Prior to removal of the apron decks, modified coffer dams will be created on each bank of the river using the existing timber bulkheads. The coffer dams will be created by covering the bulkheads with silt curtains and then sealing the open ends located on the north end of the bulkheads with sandbags. The modified coffer dams will allow in -water work to occur, while minimizing or avoiding increased turbidity and impacts to adjacent surface water quality. Coffer darn creation is expected to take 3 days. As with any of the proposed coffer dams, qualified fisheries biologist will conduct a survey of the area within the coffer dam, removing and releasing, unharmed, any fish trapped within the coffer dam. A fish removal work plan will be prepared and submitted to the requisite agencies for review and approval prior to conducting the fish removal. Electrofishing will not be used. This work is proposed to occur in April or May, outside of the authorized in -water work window of 2013, the only year that a variance is being requested. All subsequent in -water work will be restricted to the in -water work window established for this project of June 151 through August 151h. Once the coffer dams are in place, the apron decks would be removed, requiring no in -water work. Work within the coffer dams that will occur during the April/May timeframe will include: • Removal of steel H -piles sitting on buried timber piles and removal of steel cross bracing (in -water); • Removal of upper bulkhead where temporary trestle will be located (in -water); • Cut-off timber piles (i.e., those that supported the steel H -piles) below future dredging grade (in -water); • Regrade bank, to the extent possible, where temporary trestle will be located; • Install temporary trestle piles to support nearshore spans of temporary trestle (in - water); and • Install temporary trestle span (steel girders, precast deck panels for nearshore spans. The in -water work within the coffer dam will require about 13 days to complete, so that the entire duration of in -water working outside of the authorized in -water work window will be about 16 s Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 3 days. The remainder of the in -water work for subsequent years will be confined to the authorized in -water work window for this project of June 1$1 through August 15�". The length of time that the proposed coffer dam will be left in place is unknown at this time, but it will only be removed during the authorized in -water work window. The construction of the coffer dam and limited work outside the window is necessary to meet the project schedule when considering the in -water work window and constraints on project construction from operation requirements of the adjacent airfield and Boeing. Completing the work specified before the work window will allow the in -water work elements of the temporary bridge to be completed in one work window and allow the entire project to be completed in three work windows. Temporary Trestle Construction Under the original plan, the temporary trestle was to be supported by seven pile bents of five 14 -inch steel H -piles per bent. Five of the pile bents would have been below the ordinary high water mark (OHWM) for a total of 25 H -piles below the OHWM. Under the revised design, there will be seven pile bents below the OHWM, with each bent consisting of four 24 -inch diameter steel -pipe piles (SPPs), for a total of 28 SPPs below the OHWM (Sheets 1 through 3). The bridge deck for the temporary trestle as originally planned would have been wood decking with asphalt overlay. Under the current plan, the temporary trestle deck will consist of pre -cast concrete decking (Sheet 3)_ These changes were necessary to obtain seismic capacity for the bridge. Existing Bridge Demolition This section addresses proposed changes to the existing bridge demolition plans. Temporary Work Platforms - The original plan proposed demolishing the existing bridge from the temporary trestle and from the existing bridge approaches on the east and west ends of the existing bridge; however, an engineering analysis subsequent to the submission of the JARPA in June 2012 revealed that the existing bridge approaches may be unable to support the weight of some of the proposed construction equipment (e.g., crawler crane with 120 -foot boom) to be used for existing bridge demolition and new bridge construction. Therefore, the bridge approaches on each bank will be demolished and replaced with temporary work platforms, each of which will cover about 2,500 square feet beyond the OHWM. This is less than the coverage of the existing aprons. Each platform will be supported by 12 to 16 16 -inch to 24 -inch diameter SPPs. Eight (8) to 12 piles supporting each of the platforms will be placed below the OHWM. Therefore, a total of 16 to 24 of the piles will be located below the OHWM (Sheets 4 and 5). To the extent possible, the piles will be vibrated in, but some proofing with an impact hammer may be necessary. In the event an impact hammer is required, sound attenuation will be • Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 4 accomplished using a bubble curtain. The temporary work platforms are expected to be in place for six months to one year. Bridge Demolition Support Braces - Engineering analysis of the existing bridge determined that there is the potential for the bridge to collapse during demolition. To avoid this possibility, temporary supporting braces will have to be placed beneath the bridge deck during demolition (Sheets 4 and 5). Three to four supports will be placed beneath the bridge deck, with each support consisting of two 16 -in to 24 -in diameter SPPs and a cross beam. Therefore, six to eight temporary SPPs will be placed in the river below the OHWM. To the extent possible, the piles will be vibrated in, but some proofing with an impact hammer may be necessary. In the event an impact hammer is required, sound attenuation will be accomplished using a bubble curtain. The supports will be removed from the river using a vibratory driver as soon as the bridge deck is demolished. New Bridge Installation This section addresses proposed changes to the new bridge construction plans Bridge Columns -There are a number of substantial changes proposed for construction of the new bridge. Ms. Karen Walter, Muckleshoot tribal biologist, provided a number of comments to the U.S, Army Corps of Engineers (Corps) in a letter to Ms. Lori Lull dated November 9, 2012. One of those comments expressed tribal concems regarding bridge piers trapping large wood that may be carried by the lower Cedar River. Boeing's bridge engineers examined several bridge designs that would eliminate any in -water bridge piers, but had to abandon such design options due to restrictions at the project site, the principal of which is the presence of the Renton Municipal Airport runway located immediately west of the bridge. The minimum length required for a free -span bridge is substantially greater than the space available for such a bridge, which would impinge upon the Renton Municipal Airport runway. Alternatively, Boeing's bridge engineers re-examined the original bridge design and determined that fewer in -water bridge columns could be used, but with larger diameter shafts below the mudline_ Thus, under the revised plan, four 4 -foot diameter concrete columns with 6.6 -foot diameter concrete shafts will be placed in the river instead of the six 4 -foot diameter columns and shafts, as originally designed (Sheets 6 and 7). The drilled shafts will be filled with concrete and then transition to 4 -foot diameter pre -cast concrete columns at a depth of two feet below the historical dredge depth (Sheet 8). This approach is expected to help minimize the potential for wracking of large woody debris (LWD) against the bridge piers, although this possibility cannot be completely avoided. The widest, unobstructed span between piles beneath the existing bridge is roughly 65 feet, while the unobstructed span between the pier piles that will support the new bridge is about 141 feet, over twice that of the existing bridge. In addition, about 200 piles will be removed from the river during bridge demolition, as well as two bulkheads that currently constrain the channel. i Ms. Lod Lull U.S. Army Corps of Engineer January 22, 2013 Page 5 The overall effect of the replacement bridge will be to open up the channel and substantially reduce the potential for LWD to wrack against the bridge piers of the new bridge. The spacing of the pile bents for the temporary trestle will result in the potential for LWD wracking against the piles. Boeing will request that the Washington Department of Fish and Wildlife (WDFW) provide a condition in their Hydraulic Project Approval (HPA) for this project that will allow Boeing to remove LWD that wracks against the south side of the temporary trestle and transfer the LWD to the north side of the temporary trestle so that it can be carded into Lake Washington, as Boeing currently does when removing LWD wracked against the existing bridge. Reaction Piles-- Under the original proposal, six temporary reaction pile platforms were to be constructed below the OHWM for placement of the drilled shafts, with each platform supported by eight 16 -in diameter SPPs. Thus, there would have been a total of 48 16 -inch diameter SPPs below the OHWM. The revised plan proposes only four reaction pile platforms below the OHWM, with each platform support by only four 16 -inch to 24 -inch diameter SPPs. Thus, there will only be 16 SPPs below the OHWM instead of the 48 SPPs, as originally proposed (Sheet 4)_ Bridge Deck Construction -- The original construction plans proposed poured -in-place concrete bridge deck panels. Ms. Rebekah Padgett, Washington Department of Ecology (Ecology), expressed concems about the potential impacts to water pH in the event that uncured concrete should enter the water during bridge construction or in the event that concrete dust should enter the water during demolition of the existing bridge (e-mail message to Bob Stuart [AMSC] and Lori Lull [Corps] dated 11113/12). In response to Ecology's concems regarding the use of poured concrete, the design plans were changed to construct the bridge deck from pre -cast, pre -stressed concrete deck panels. To further reduce the use of poured concrete during bridge construction, pre -cast concrete columns and pre -cast concrete pile caps will also be used (Sheet 7). The four bridge drilled shafts will still be constructed of cast -in-place concrete below the historical dredge depth, but casing shoring will be used to provide insulation from the river. Ecology's concerns regarding the impacts of concrete dust generated during bridge demolition on water pH will be addressed below in the section that discusses proposed changes to conservation and mitigation measures. Bridge Lighting - Ms. Walter also expressed concerns about bridge lighting impinging upon the underlying aquatic habitat. The new bridge will be equipped with four red navigation lights, two on each side of the bridge deck at the bridge piers per U.S. Coast Guard regulations. The navigation lights will be on at all times during the night (Sheet 9). The bridge deck will be illuminated with unidirectional light emitting diode (LED) lamps recessed into the inside face of a 6 -inch high concrete curb on each side of the bridge deck such that the light is directed only on to the bridge deck. The lamps are expected to cast light a distance of three to four feet on the bridge deck only. The lamps will be spaced about 10 feet apart on center. The lamps are pli Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 6 required for pedestrian safety and will be operated by a photocell so that they remain on throughout the night. The temporary trestle will be equipped with 12 red navigation lights at the bridge piers, with six on the downstream and upstream edges of the temporary trestle. The temporary trestle deck will also be illuminated with the same LED unidirectional lamps as will be used on the new bridge (Sheet 10). The proposed lighting is not expected to cast extraneous light on the underlying substrate beneath the bridges. Shoreline Regrading and Restoration Removal of the bridge aprons and bulkheads will allow for enhancement of the existing shoreline areas on each bank of the lower Cedar River as described in the DARPA and draft BA submitted in June 2012. Approximately 145 lineal feet (If) of treated -timber bulkhead will be removed from each shoreline. The shoreline will be regraded to an approximate slope of 3:1. The shoreline areas that were formerly covered by bridge aprons and located behind treated - timber bulkheads will be amended with organic materials to create a suitable planting medium, regraded to a more natural slope (e.g., 3:1), and planted with native and adaptive vegetation. A revised conceptual shoreline restoration plan has been developed (Sheets 11 and 12). The shoreline restoration area will cover approximately 8,500 square feet (sf) along 260 If of shoreline and will include the planting of approximately 1,795 sf of riparian vegetation. A final restoration plan will be prepared when all aspects of the bridge design have been finalized. The lower Cedar River in this location occupies a linear constructed channel with the bank protected by bulkheads with areas of riprap_ The removal of the existing timber bulkheads from beneath the existing bridge and bridge aprons, as well as the risk of scour on the exposed banks, results in the need for bank protection to reduce risks to the proposed replacement bridge and restored riparian areas. The City of Renton expressed concerns regarding the removal of the timber bulkheads and the potential impact bulkhead removal might have on shoreline stability in the project area. The City indicated that shoreline armoring would be required to insure shoreline stability during future flood -control dredging in the project area. A roughened rock toe will be installed below the OHWM consisting of an approximately 2 -foot layer of rock (Class 111 riprap) over a filter stone layer. This rock toe will extend below the current sediment line to accommodate the normal flood -control dredging conducted by the City of Renton in this reach of the river as identified in the King County 2006 Flood Hazard Management Plan (King County, 2006) and Lower Cedar River Section 205 Flood Control Project. The riprap used for the toe will be setback from the current bank to create additional aquatic habitat and a vegetated buffer will be planted above the OHWM in the areas formerly occupied by the bridge aprons. Additionally, a gravel fish mix will be placed over the riprap at the OHWM (Sheet 12). The bank restoration will involve approximately 2,230 cubic yards (cy) of cut and the placement of 325 cy of filter stone, 650 cy of riprap and 123 cy of soil amendment. The majority of the cut and fill is located above the OHWM. Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 7 Above the OHWM, the planting design for the project uses native and adapted riparian and upland plants that will establish quickly and that have extensive root systems. Representatives of the Renton Municipal Airport, after their review of the proposed restoration plans, objected to any shoreline revegetation out of their concerns that shoreline revegetation would attract wildlife (i.e., birds). The shoreline property in the proposed restoration area is owned by the Renton Municipal Airport, not by Boeing. Negotiations with airport representatives resulted in their agreeing to shoreline restoration in the originally -proposed areas providing that the design is consistent with the Washington State Department of Transportation's (WSDOT) Aviation Stormwater Design Manual, Table A-1 — Recommended Plants for Airports West of the Cascades (2008). These plants are species that are recommended for use in and around airports and are not known to attract wildlife or have other characteristics undesirable in the airport environment. Planting will also be limited to low -growing species that will not attain heights of more than 10 feet to prevent interference with the transportation of airplanes across the new bridge and avoid impacts to airport operations_ Ms. Karen Walter, Muckleshoot tribal biologist, recommended that species of willows (e.g., Salix spp.) be incorporated into the proposed shoreline restoration design. Based on the above discussion, and to the extent possible, willow species that are consistent with plant species recommended for use in and around airports have been incorporated into the planting plan (Sheet 12). Additionally, Ms. Janet Curran, National Marine Fisheries Service (NMFS), indicated during the project pre -application meeting held at the Corps' Seattle, Washington facility on January 12, 2012, that NMFS would prefer that the shoreline restoration area be expanded to include shorelines adjacent to the site along the take Washington shoreline east and west of the mouth of the Cedar River_ These shoreline areas are owned by the Renton Municipal Airport and representatives of the Airport have stated emphatically that no additional shoreline restoration will be permitted on their property. The landscape design includes the installation of an engineered soil lift along the OHWM to reduce the risk of erosion while the plants are established. Organic compost soil amendments will be added to the planting soil to provide the best possible growing medium for the establishment of the plants. Organic wood mulch will also be placed on all planting areas to protect the soil from extreme heat, reduce the irrigation demand by limiting evaporation from exposed soil, and reduce soil erosion. A temporary irrigation system will be installed during the initial plant establishment period. A post -implementation maintenance and monitoring plan has been prepared outlining maintenance and monitoring requirements to ensure the long-term success of the shoreline restoration (Appendix C in draft biological assessment). The shoreline will be regraded after removal of the bulkheads and the existing bridge and aprons. Regrading will be accomplished from above the OHWM using excavators and other heavy equipment. The placement of the rock toe will require excavation and placement of riprap and filter stone below the OHWM. Work below the OHWM will occur within a coffer dam or turbidity curtain to minimize and avoid turbidity plumes in the adjacent waters_ All material to be placed below OHWM will be clean and free of pollutants. In accordance with Ecology, a water quality monitoring plan will be developed and implemented to insure compliance with state water quality standards_ The first step in the process will be to remove any remaining r Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 8 elements of the bulkhead. Existing materials will be excavated to the required elevation and to create the base for the filter stone and riprap. The filter stone will be placed first and will not be allowed to free fall to minimize turbidity. Riprap will be placed using an excavator followed by the fish mix and upland grading and planting The shoreline will be regraded to a slope of 3:1 and the soil amended to create a suitable planting medium. A filter fabric fence will be placed along the shoreline and organic wood mulch placed on all planting areas to minimize and avoid erosion during shoreline regrading_ Shoreline restoration on each bank of the Cedar River will be accomplished from above the OHWM using excavators to remove debris and to regrade the shoreline to a slope specified in the restoration plans. Top soil, soil amendments, and other material necessary for use in the shoreline restoration will be transported to the site using dump trucks or other heavy trucks. Plants used to revegetate the shoreline will be planted by hand. Conservation and Mitigation Measures Ecology expressed concerns regarding the potential for water quality impacts attributable to project -related activities and will require that Boeing prepare and implement a water quality monitoring plan. Boeing is in the process of preparing the plan, a draft of which will be submitted to Ecology for their review and comment. A final water quality monitoring plan will be prepared incorporating the requisite changes, as indicated by Ecology. In partial response to Ecology's concerns, Boeing has developed specific erosion and sediment control (ESC) measures (Sheets 13 and 14) to minimize and avoid potential water quality impairment attributable to site -related activities. The following ESC measures are intended to be minimum requirements to meet anticipated site conditions. As construction progresses and unexpected seasonal conditions dictate, additional ESC measures may be necessary to ensure complete siltation control on the proposed project site during the course of construction. The appropriate ESC measures will be implemented, as needed, to protect adjacent properties and water quality. Before beginning any construction activities, establish the clearing limits. All required sedimentation/erosion control facilities must be constructed and in operation prior to land clearing and/or construction to prevent transportation of sediment to surface water, drainage systems, and adjacent properties. All erosion and sediment facilities shall be maintained in a satisfactory condition until such time that clearing/construction is complete and the potential for on-site erosion has passed. Additional measures, such as constructed wheel -wash systems or wash pads, may be required to ensure that all paved areas are kept clean and track out to road right- of-way does not occur for the duration of the project. 2. ESC measures, including all perimeter controls, shall remain in place until final site construction is complete and permanent stabilization is established. "WII M,Am Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 9 3. From May 1 through September 30, provide temporary and permanent cover measures to protect the disturbed areas that will remain unworked for 7 days or more. 4_ From October 'I through April 30, provide temporary and permanent cover measures to protect the disturbed areas that will remain unworked for 2 days or more. Additionally, protect stockpiles and steep out and fill slopes If unworked for more than 12 hours. Sufficient cover materials shall be stockpiled on site to cover all disturbed areas. 5. The BMP facilities shall be inspected daily by the contractor and maintained to ensure continued proper functioning. Written records shall be kept of weekly reviews of the BMP facilities during the wet season (October 1 to April 30) and monthly reviews during the dry season (May 1 to September 30). 6, Prior to the beginning of the wet season (October 1), all disturbed areas shall be reviewed to identify which areas can be seeded in preparation for winter rains. Disturbed areas shall be seeded within one week of the beginning of the wet season. A sketch map of those areas to be seeded and those areas to remain uncovered shall be submitted to the City of Renton for review. All seeded areas will be mulched. 7. Any area needing ESC measures not requiring immediate attention shall be addressed within 7 days. 8. The BMP facilities on inactive sites shall be inspected and maintained a minimum of once per month or within 48 hours following a storm, 9. Before any development or construction activities occur, a pre -construction meeting must be held with the City of Renton Public Works design engineer. 10. The boundaries of the clearing limits shall be clearly flagged by a continuous length of survey tape, or fencing, if required, prior to construction and during the construction period. No disturbance beyond the clearing limits shall be permitted. The clearing limits will be maintained for project duration. 11. At no time shall more than 6 inches of sediment be allowed to accumulate within a catch basin/inlet. All catch basins/inlets and conveyance lines shall be cleaned prior to paving. The cleaning operation shall not flush sediment -laden water into the downstream system. 12. Stabilized construction entrances and roads shall be installed at the beginning of construction and maintained for project duration. Additional measures, such as wash pads, may be required to ensure that all paved areas are kept clean for project duration. AM WTI I M, Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 10 13. Straw mulch for temporary erosion control shall be applied at a minimum thickness of 3 inches. 14. Stockpiles are to be located in safe areas and adequately protected by temporary secured plastic cover, seeding, or mulching. Hydroseeding is preferred. 15. Remove all temporary ESC measures upon project completion. Proposed project changes are summarized in the Table 1. UPDATES TO THE DRAFT BA RESULTING FROM PROPOSED PROJECT CHANGES The following sections discuss changes to the draft BA resulting from proposed changes the bridge design and bridge construction methods. Section 2.2 — Proposed Action Subsections within this section of the draft BA refer to Table 2 (Proposed Construction Methods, Timing, and Schedule). The information provided in Table 2 is no longer valid, and as such, some of the information presented in Table 2 has been moved to and summarized in an updated Table 3 (Proposed North Bridge Replacement Project Summary). Section 3.0 - Action Area Under the current design plan, 24 -inch diameter SPPs will be used to support the temporary trestle and 16 -inch to 24 -inch diameter SPPs will be used to support the temporary work platforms. The piles will be vibrated into place and then will be proofed with an impact hammer. A bubble curtain will be used during impact installation. The underwater action area presented in the draft BA submitted in June 2012 was based on the impact installation of 14 -inch steel 1 -11 - piles, which were originally proposed as supports for the temporary trestle. The underwater action area is recalculated below to account for the impact installation of 24 -inch diameter SPPs. As discussed in the draft BA, the following assumptions are used in recalculating the underwater action area; • Use of a bubble curtain will result in a 10 dB -reduction in the underwater sound level associated with the impact driving of a SPP; and • The underwater background noise level in Lake Washington is 120 dBRMS. According to the Washington Department of Transportation (WSDOT) (2012), impact driving of a 24 -inch diameter SPP results in an underwater noise level of 189 dBRMs. Assuming a reduction of 10 dBRMs when using a bubble curtain, the underwater noise level at a distance of 10 meters (m) from the pile would 179 dBRMS. The distance at which the underwater noise level produced by the impact installation of a 24 -inch diameter SPP will attenuate to background is: R1 = (10 m) * 10(~79-120!35) = (10 m)*103.91 = 85,770 m = 3281,326 feet = 53.3 miles Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 11 Figure 14 in the draft BA will not change because the geography of Lake Washington and the lower Cedar River prevent underwater sound from extending beyond the boundaries as depicted in the figure. Section 5.3.4 — Effects of the Action (Shoreline, Sediment, Substrate, Bathymetry, and Habitat diversity) Under the revised project plan, the following actions will occur, Regrading and restoration of a total of approximately 8,500 sf of shoreline along 260 If of shoreline (130 If on each bank). This will involve removal of approximately 145 If of treated -timber bulkhead from each side of the channel, removal of approximately 2,230 cy of material from the shorelines, placement of approximately 325 cy of fill along the shorelines, and placement of 650 cy of riprap along the shorelines for shoreline stabilization and protection after bulkhead removal. Restoration will also include planting of 1,795 sf of native vegetation (see revised Table 3). • Disturbance of approximately 23,700 sf of river substrate through pile removal, pile placement, and work within coffer dams. Table 4 of the draft BA indicated 23,556 sf of river substrate would be disturbed. Revisions to the proposed bridge design plans required that the hydraulic analysis and scour study be updated. The revised hydraulic analysis and scour study concluded that the current bridge design is compliant with the Federal Emergency Management Agency's and the City of Renton's floodplain regulations. The revised hydraulic analysis and scour study report is provided as an attachment to this letter. The original report was provided in the draft BA as Appendix E. The original draft BA did not provide specific information regarding shoreline regrading because that information was unavailable. The 90% design plans provided more detailed information about the shoreline regrade (see above — Shoreline Regrading and Restoration). As stated above, Class III riprap (26 -inch to 36 -inch diameter rock) will be placed below the OHWM along the regraded banks on each side of the Cedar River. Riprap will replace the existing treated - timber bulkheads. Based on information provided by the City of Renton and analysis by a hydraulic engineer, riprap is necessary to insure bank stabilization in absence of the bulkheads. This, to a large degree, is dictated by periodic flood -control dredging of the lower Cedar River. To minimize the negative environmental impacts of shoreline armoring, engineers selected the smallest riprap (Class lll) that would provide the requisite shoreline stability. Additionally, riprap will be confined to the area below the OHWM (Sheet 12), while shoreline above the OHWM will be amended with organic materials to create a suitable planting medium, regraded to a more natural slope (e.g., 3:1), and planted with native and adaptive vegetation. Fish mix/habitat gravel will be placed below the OHWM along the length of the shoreline regradelrestoration (Sheets 11 and 12) to help provide better habitat for juvenile salmonids. Ms. Lon Lull U.S. Army Corps of Engineer January 22, 2013 Page 12 Recognizing the negative environmental impacts associated with shoreline armoring, the proposed shoreline regrade and restoration was designed within the limitations and restrictions imposed by the artificially created lower Cedar River, which is confined by vertical bulkheads and levees. The proposed shoreline regrade and restoration is, by necessity, a compromise that provides both the requisite shoreline stability and improved habitat functionality. The proposed design expected to be a substantial improvement over existing habitat conditions through the: • Removal of approximately 290 If of vertical bulkheads; • Regrading of 260 If of shoreline to a more natural slope of 3:1; • Restoration of 8,500 sf of shoreline; and • Revegetation of 1,795 sf of shoreline with native vegetation. Section 6.6.2 — Effects of the Action (Benthic Fauna) Under the current proposal, the new bridge will be supported by four 4 -foot diameter pre -cast concrete columns on 6.5 -foot diameter concrete drilled shafts. The 6.5 -foot diameter concrete shafts transition to the 4 -foot diameter concrete columns at two feet below the historic dredge depth (Sheet 8). Therefore, the footprint of the 4 -foot diameter concrete columns at the mudline will occupy a total area of only 50.3 sf, as opposed to an area of 75.4 sf that would have resulted if six 4 -foot diameter bridge columns had been used. Thus, the revised design will result in a net gain of 61.5 sf of benthic habitat instead of 36.4 sf as reported in the original draft BA (see revised Table 3). Short-term Direct Effects (Underwater Sound - Puget Sound Chinook Salmon, Puget Sound Steelhead Trout, and Coastal/Puget Sound Bull Trout) As stated above, under the revised plan, the temporary trestle will be supported by 28 24 -inch diameter SPPs located below the OHWM. Additionally, two temporary work platforms will be erected along each bank of the Cedar River and will be supported by a total of 24 to 32 16 -inch to 24 -inch diameter SPPs, with 16 to 24 of these located below the OHWM (Sheets 4 and 5). These piles, to the extent possible, will be vibrated into placed, but will then need to be proofed with an impact hammer. A bubble curtain will be employed whenever an impact hammer is used. The original effects assessment was based on the underwater noise produced by the impact installation of 25 14 -inch diameter steel H -piles. Under the current plan, the underwater noise assessment is based on the impact installation of 24 -inch diameter SPPs, assuming 500 strikes per pile per day and installation of up to eight piles per day. (i.e., 4,000 pile strikes per day). Figure 17 (Underwater Sound Level Thresholds for Behavioral and Injury Effects in Fish) has been revised to account for the locations of the fish behavioral and injury thresholds based on the impact installation of 24 -inch diameter SPPs. The fish injury and behavioral thresholds will Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 13 likely extend further south into the Cedar River and further north into Lake Washington with the use of the 24 -inch diameter SPPs, as can be seen in the summary below: • Injury — peak: 14 -inch H -pile = 0 m; 24 -inch SPP = 5 m; • Injury — fish 2:2 g: 14 -inch H -pile = 2 m; 24 -inch SPP = 218 m; • Injury — fish < 2 g; 14 -inch H -pile = 4 m; 24 -inch SPP = 251 m; and • Behavioral: 14 -inch H -pile = 215 m; 24 -inch SPP = 858 m. The effects determinations for Puget Sound Chinook salmon, Puget Sound steelhead trout, and Coastal/Puget Sound bull trout due to underwater noise attributable to impact pile driving remain the same as stated in the draft BA. Bridge Lighting: Long- and Short -terra Direct and Indirect Effects The draft BA submitted in June 2012 did not address potential effects of bridge lighting on Puget Sound Chinook salmon, Puget Sound steelhead trout, and Coastal/Puget Sound bull trout as no design information was available at that time regarding lighting of the proposed bridge. As described above, both the temporary trestle and new bridge will be equipped with red navigation lights, per U.S. Coast Guard regulations, that will be activated at night. Additionally, both the new bridge and temporary trestle will be equipped with unidirectional LED lamps mounted on the inside of a six-inch high concrete curb on each edge of the bridge deck (Sheets 9 and 10). Deck lighting will also be activated at night. The proposed deck lighting was specifically designed to minimize and avoid light being cast on the underlying aquatic habitat. Because the deck lighting will be recessed on the inside of a six- inch high concrete curb, no light will be cast on the underlying aquatic habitat.. Although no studies were found that addressed the potential impacts of red light on aquatic organisms, the red light resulting from the navigation lights is not expected to provide sufficient light to illuminate the underlying aquatic habitat. Therefore, light produced by proposed deck lighting and navigation lights is not expected to impinge upon the underlying aquatic habitat. The effects determination for bridge lighting is that it may affect Puget Sound Chinook salmon, Puget Sound steelhead trout, and Coastal/Puget Sound bull trout because: • Suitable migration and rearing habitat is present in the Action Area for each of the listed species; and • Both the temporary trestle and new bridge will be equipped with navigation lights and deck lights that will be illuminated from dusk to dawn. The proposed lighting is not likely to adversely affect Puget Sound Chinook salmon, Puget Sound steelhead trout, and Coastal/Puget Sound bull trout because: Ms. Lori Lull U.S. Army Corps of Engineer January 22, 2013 Page 14 Deck lighting will consist of unidirectional, low -wattage lamps mounted on the inside of a six-inch high concrete curb, thereby preventing deck lighting from impinging upon the underlying aquatic habitat; and Red light produced by the navigation lights is not expected to be bright enough to impinge upon the underlying aquatic habitat_ The proposed design changes, as described above, are not expected to result in a change in the effects determinations to listed species or their critical habitats, as presented in the original draft BA submitted in June 2012. The proposed design changes to Boeing's North Bridge Replacement Project, as described alcove, were necessitated, in part, by engineering and geotechnical information that was unavailable when the original JARPA and draft BA were prepared and submitted in June, 2012. Additional design changes were made in response to comments provided by agency representatives. The proposed changes are expected to minimize and avoid potential environmental impacts and potential impacts to listed species and their critical habitats. Should you have any questions or need additional information regarding the project, I can be reached via telephone or e-mail as indicated below. Sincerely yours, AMEC Environment & Infrastructure, Inc. Robert E. Stuart Senior Fisheries Scientist Direct Tel.: (426) 921-4424 Direct Fax: (426) 921-4040 E-mail_ bob.stuart@amec.com res p;�boeing renlonUy1116013o renton north hridgeVeporL%�arpoVevised project descriplionUARPA—Addendurn_Corps_012213.docx Enclosure: No -rise and Scour Report (12114112) — For Corps Submittal Only cc: Mr_ Mark Clement, The Boeing Company Mr. Larry Fisher, Washington Department of Fish and Wildlife Ms. Rebekah Padgett, Washington Department of Ecology Ms. Trina Sunderland, Washington Department of Natural Resources Ms. Karen Walter, Muckleshoot Tribe Project File TABLES U) z W W J W z 0 + •� YJ T Lu 0 CT Lu 0 f � O N m W H3: ZZ W W O IXZ DL.: U °) II � Z p c a 0- T z u • C t W J uj.,(6 m a o� C3 O C a) m U � a Q Z 0) CD 0-2 L m 0 Z a oz 0 m Q v CL o 2m 0 U Ir Q u m a3 m 0- .... 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SHEET: 1 OF 14 CITY OF RENTON I RENTON, WA 98038 DATE: 01/18/2013 5 = PER 2012 AMSC HYDRAliOG ANALYSIS ARID 2M6 FIS '/, SECTION: NE LATITUDE: 47.5005 N SECTION: 7 LONGITUDE: -122.2159 W TEMPORARY TRESTLE TOWNSHIP: 23N LONGITUDINAL VIEW RANGE: 5E PURPOSE: BRIDGE REPLACEMENT DATUM: NGVD 29 ADJACENT PROPERTY OWNERS: WASHINGTON DEPARTMENT OF NATURAL RESOURCES CITY OF RENTON NAME: MARK CLEMENT THE BOEING COMPANY REFERENCE #: NWS -2011-1101 SITE LOCATION ADDRESS: 737 LOGAN AVE. N. RENTON, WA 98038 IN: CEDAR RIVER NEARIAT: CITY OF RENTON COUNTY: KING STATE: WA SHEET: 2 OF 14 DATE: 01/1812013 PILE 1 ti% (5�;' BRIDGE PILE 2 PRECAST CDNCRETE DECK W24x GIRDER (2)W36x CROSSBEAM W/S 1FFENERS 014W "24"0 STEEL PIPE PILE �. 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TEMPORARY WORK PLATFORM PILES of AjPPROACH V EXISTING APRON (TO BE REMOVED) 1/4 SECTION: NE LATITUDE: 47-5005 N TEMPORARY WORK PLATFORM, SECTION: 7 LONGITUDE: -122.2159 W TEMPORARY REACTION PILES, AND TOWNSHIP: 23N TEMPORARY BRIDGE SUPPORT BRACES - RANGE: 5E PLAN VIEW PURPOSE: BRIDGE REPLACEMENT DATUM: NGVD 29 ADJACENT PROPERTY OWNERS: WASHINGTON DEPARTMENT OF NATURAL RESOURCES CITY OF RENTON NAME: MARK CLEMENT THE BOEING COMPANY REFERENCE #- NWS -2011-1101 SITE LOCATION ADDRESS: 737 LOGAN AVE. N. RENTON, WA 98038 IN. CEDAR RIVER NEARIAT: CITY OF RENTON COUNTY: KING STATE: WA SHEET: 4 OF 14 DATE. 01 /18/2013 a00 arnr ��a- am n1v FOWM 0= VX*M—\- ..r.... 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N. RENTON, WA 98038 Sc hLE I % K' WE.57 EWNK = i N L- I -.Vi t hAiK lill I t cur W.!, mi c -*W1 - XX C'y FILTER S10 it r ?—, Gy LANE WASH "77 9" 51-t:iELliE -h L PROP03EE Ff*D—JM D ERME PAMAFNI 0 0cv.: AA WNI P MAMD El:lfE.Z+ IJP.10POSED cwi rMlP4AX;Y I trii WATtIA MAM All F1-4COe-; EASTFJ'� WLWEAD Eft3r OF PAVEK"T Ar-li-ES R001 RFAJMIAY REvE 11 SECTION: NE LATITUDE: 47.5005 N PROPOSED REPLACEMENT SECTION: 7 LONGITUDE: -122.2169 W BRIDGE TOWNSHIP., 23N PLAN VIEW RANGE., 5E PURPOSE: BRIDGE NAME' MARK CLEMENT IN. CEDAR RIVER REPLACEMENT THE BOEING COMPANY NEARIAT: CITY OF RENTON DATUM: NGVD 29 REFERENCE #-. NWS -2011-1101 COUNTY: KING STATE: WA ADJACENT PROPERTY OWNERS: SITE LOCATION ADDRESS: SHEET: 6 OF 14 WASHINGTON DEPARTMENT OF 737 LOGAN AVE. N. DATE: 0111812013 NATURAL RESOURCES RENTON, WA 98038 CITY OF RENTON zi e, PER 2.012 AMEC HYDRAMIC ANALYSIS AND 2DD6 FIS MEASURED AT 9orrOM OF GIRDER AT IpSmEAM FACE OF BRIDGE '/, SECTION: NE LATITUDE: 47.5005 N SECTION: 7 LONGITUDE: -122.2159 W PROPOSED REPLACEMENT BRIDGE TOWNSHIP: 23N LONGITUDINAL. VIEW RANGE: 5E PURPOSE: BRIDGE REPLACEMENT DATUM: NGVD 29 ADJACENT PROPERTY OWNERS: WASHINGTON DEPARTMENT OF NATURAL RESOURCES CITY OF RENTON NAME: MARK CLEMENT THE BOEING COMPANY REFERENCE #: NWS -20'11-1101 SITE LOCATION ADDRESS: 737 LOGAN AVE. N. 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Al L- SIC F;< i SG LE: f�TS 33 '/ SECTION: NE LATITUDE: 47.5005 N SECTION: 7 LONGITUDE. -122.2159 W EROSION CONTROL MEASURE TOWNSHIP: 23N SILT FENCE - TYPICAL RANGE: SE PURPOSE: BRIDGE REPLACEMENT DATUM: NGVD 29 ADJACENT PROPERTY OWNERS: WASHINGTON DEPARTMENT OF NATURAL RESOURCES CITY OF RENTON NAME: MARK CLEMENT IN: CEDAR RIVER THE BOEING COMPANY NEARIAT: CITY OF RENTON REFERENCE #: NWS -2011-1101 COUNTY: KING STATE: WA SITE LOCATION ADDRESS: SHEET: 13 OF 14 737 LOGAN AVE. N. DATE: 01118/2013 RENTON, WA 98038 :ic6�tiE: rii aril Ck"Bn`., S r. s �.I'�''V E.s��Q.N TRw _ E .E vc F Ckaf=_ )FY.0 ri.T[5 *AID; 7 � P 11 F l r N 3'J rid, � F y: f ! i? KPL N 'CV W"' Cf"'Ll jt:a".) F[P' ''; "lOr'V rd16g STIPXTVRf WLS S'f:Y�:;E 1nr ct. z;A�: �s:a c s_�r a rrr,; ;Icr, � ri sl�-nv res:r�lcw IHC RrTt yr7 4E S -sum Yr3 F_JR a!y_s k .'A im p:Uv w' w -'11i CVI_EL;, 'riL ,...:!iFCTr� 314TTc�. a �:Pf Ci !bkri PRCnpm Lu...lXW L a. a : . va (. w� ?NC STA4's1L>z5 S�r.'L31G�T�arL !-&' Y,151 grass; Ty. 1144 SECTION: NE LATITUDE: 47.5005 N SECTION: 7 LONGITUDE: -122.2159 W EROSION CONTROL MEASURE TOWNSHIP: 23N INLET PROTECTION RANGE: 5E PURPOSE: BRIDGE NAME: MARK CLEMENT IN: CEDAR RIVER REPLACEMENT THE BOEING COMPANY NEAR/AT: CITY OF RENTON DATUM: NGVD 29 REFERENCE #: COUNTY: KING STATE: WA ADJACENT PROPERTY OWNERS: NWS -2011-1101 SHEET: 14 OF 14 WASHINGTON DEPARTMENT OF SITE LOCATION ADDRESS: DATE: 01/18/2013 NATURAL RESOURCES 737 LOGAN AVE. N. CITY OF RENTON RENTON, WA 98038 ProjectTitle SoEing NDrth Br-idge Rep�acernent Projent - Cedar River Pike information (size, type, 24 -in di�a. SPPs inst=-Aed wth a impac" hamr-ner number, pile stFikes. etc-) 04 5M Peak I SEL RMS lEffective Quie, 6 IMeasured si221e strikeve I 03t - !"!T !i`5 NMI I C7i�aancr lm} g, Estimated number V&trikes IMMAW-7771 Cumulative SEL at measured distance ............. .......... Dlralanc4R (m) to thre5fiald Onse-, 0. phy5ica3Injuly Behavior Peak Curnula6ve SEL dB" W.Is dEB5 Fish? 2 g Fish < 2 da ITransmission loss mistant C15H unknuoin) 206 IV 183 150 '77_72�� This calmilatiort assumes that single strike SELs < 150 dB do riot w5curnufate to cause injury {Effective 21 -1 Notes (source for estimates, etc.) Noise aftenuwion includes pile cam and bubb4s curtain: 500 UcwWpde and 8 piles?day 12 O 0 ti OZ C 1; UNDERWATER SOUND LEVEL THRESHOLDS FOR O BEHAVIORAL AND INJURY EFFECTS IN FISH Boeing North Bridge Replacement Project 0 Renton, WA By- RES Date 01/18/1-3 Project No,LY11 1660130 Figure 17 ameO _J City of Renton Department of Community & Economic D,.,,_lopment ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT:Piew pley I COMMENTS DUE: FEBRUARY 6, 2013 APPLICATION NO: LUA12-000303, ECF, SM DATE CIRCULATED: JANUARY 23, 2013 APPLICANT: Mark Clement, Boeing PROJECT MANAGER: Vanessa Dolbee PROJECT TITLE: Boeing North Bridge Replacement Project PROJECT REVIEWER: Kayren Kittrick SITE AREA: 21,780 square feet EXISTING BLDG AREA (gross): 14,670 square feet LOCATION: 737 Logan Avenue N PROPOSED BLDG AREA (gross) 10,600 square feet SUMMARY OF PROPOSAL: The applicant is requesting SEPA Environmental Review and a -Shoreline Substantial Development Permit for the replacement of the North Boeing Bridge. The project would include the demolition of the existing bridge, construction and removal of a temporary trestle and the installation of a new Bridge. The bridge is located in the Shoreline High Intensity overlay, within Reach A of the Cedar River immediately before the river enters Lake Washington. The project would include work on the following parcels: 0723059001, 0723059069, 0723059007 and 072305HYDR. In addition the project would include work in three different zones beginning from the west, Renton Municipal Airport zoned IM, Cedar River Park, zoned IH, and the Boeing manufacturing facility zoned UC -N2_ The project would remove 14,670 SF of overwater coverage and the new bridge would result in 10,600 SF of overwater coverage. Mitigation plan including 8,500 SF of shoreline restoration has been proposed. The temporary trestle would be 6,880 SF and be located south of the existing bridge. The project would be located in the floodway and Floodplain of the Cedar River and located in a seismic hazard area. Removal and replacement of sediment would result in approximately 15,550 CY of cut and fill. In addition, it is estimated that 23,775.4 SF of river substrate would be disturbed. The applicant provided a stream study and habitat report, geotechnical report, a no rise analysis, and a biological assessment. A. ENVIRONMENTAL IMPACT (e.g. Non -Code) COMMENTS Element of the Probable Probable More Environment Minor Major information Impacts impacts Necessary Earth Air Water Plants Land/Shoreline Use Animals Environmental Heolth Energy/ Natural Resources B. POLICY -RELATED COMMENTS C. CODE -RELATED COMMENTS I We have reviewed thi or areas where oddit onJim' Signature of DirectortW7ut1 Element of the Probable Probable More Environment Minor Major information Impacts impacts Necessary Housing Aesthetics Li trVGlore Recreation Utilities Transportation Public 5ervices Historic/Cultural Preservation Airport Environment 10,000 Feet 14,000 Feet Ole with Particular attention those areas in which we have expertise and have identified areas of probable impact tion is neededtoproperly assess this proposal 2or d Representative Date City of Renton Deportment of Community & Economic De,o.opment ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT: COMMENTS DUE. FEBRUARY 6, 2013 APPLICATION NO: LUA12-000303, ECF, SM APPLICANT: Mark Clement, Boeing PROJECT TITLE: Boeing North Bridge Replacement Project DATE CIRCULATED: JANUARY 23, 2013 PROJECT MANAGER: Vanessa Dolbee PROJECT REVIEWER:- �1 SITE AREA: 21,780 square feet EXISTING BLDG AREA (gross): 14,670 square feet LOCATION: 737 Logan Avenue N PROPOSED BLDG AREA (gross) 10,600 square feet SUMMARY OF PROPOSAL: The applicant is requesting SEPA Environmental Review and a Shoreline Substantial Development Permit for the replacement of the North Boeing Bridge. The project would include the demolition of the existing bridge, construction and removal of a temporary trestle and the installation of a new bridge. The bridge is located in the Shoreline High Intensity overlay, within Reach A of the Cedar River immediately before the river enters Lake Washington_ The project would include work on the following parcels: 0723059001, 0723059069, 0723059007 and 072305HYDR. In addition the project would include work in three different zones beginning from the west, Renton Municipal Airport zoned IM, Cedar River Park, zoned IH, and the Boeing manufacturing facility zoned UC -N2. The project would remove 14,670 SF of overwater coverage and the new bridge would result in 10,600 SF of overwater coverage. Mitigation plan including 8,500 SF of shoreline restoration has been proposed. The temporary trestle would be 6,880 SF and be located south of the existing bridge. The project would be located in the floodway and floodplain of the Cedar River and located in a seismic hazard area. Removal and replacement of sediment would result in approximately 15,550 CY of cut and fill. In addition, it is estimated that 23,775.4 SF of river substrate would be disturbed. The applicant provided a stream study and habitat report, geotechnical report, a no rise analysis, and a biological assessment. A. ENVIRONMENTAL IMPACT (e.g. Non -Code) COMMENTS Element of the Probable Probable More Environment Minor Major Information impacts impacts Necessary Earth Air Water Plants Land/Shoreline Use Animals Environmental Health Energy/ Natural Resources 0. POLICY -RELATED COMMENTS C. CODE -RELATED COMMENTS Element of the Probable Probable More Environment Minor Major Information Impacts Impacts Necessary Housing Aesthetics Light/Glare Recreation utilities Transportation Public Services Historic/Cultural Preservotion Airport Environment 10,000 Feet 14,000 Feet We have reviewed this application with particular attention to those areas in which we have expertise and hove identified areas of probable impact or areas where additional information is needed to properly assess this proposal, Signature of Director or Authorized Representative Date Vanessa Dolbee f�JA `Cwl�C=13 From: Abdoul Gafour Sent: Tuesday, January 29, 2013 2:40 PM To: mark. d.clement@boeing.com' Cc: Ryan Zulauf; Doug Jacobson; Lys L. Hornsby; Vanessa Dolbee; Gregg A. Zimmerman; Neil R. Watts; Chip Vincent Subject: City water line not required as part Boeing North Cedar river bridge replacement project LUA12-000303 Follow Up Flag: Follow up Flag Status: Flagged Hello Mr. Clement: The City Water Utility is withdrawing our request for the design and installation of a section of a City water line as part of the Boeing bridge replacement project. We will evaluate other options and alternate routes for the water line in the future. We appreciate your consideration and evaluation of our initial request. Wishing you success on this challenging bridge project. Sincerely, Abdoul Gafour Water Engineering Supervisor City of Renton Public Works 1055 S Grady Way Renton, WA 98057 425-430-7210 agafour@rentonw_a.go_v From: Clement, Mark D[mailto:mark.d.clement@boeing.com] Sent: Friday, January 25, 2013 12:40 PM To: Ronald Straka; Vanessa Dolbee Cc: Rockwell, William; Sullivan, Michael J; Ryan Zulauf; Neil R. Watts Subject: Boeing North Cedar river brige replacement project LUA12-000303 r Ron, Vanessa This letter is in response to your Water department request that the bridge replacement project includes the design and construction of a 12 -inch water line across the new bridge and extending to the end of the bridge approach slabs. Due to the geometric constraints of the site, the minimum girder depth of the bridge is 12 -inches at the abutments. Accommodation of the water pipe would require the pipe be attached to the exterior face of the structure. With the required casing, the pipe assembly would exceed the depth of the bridge structure. Measures to protect the pipe from potential impacts of large woody debris would be required, we believe that this would be unacceptable risk to the bridge function, as well as a potentia flooding issue, Boeing requests that the ciLy seek another alternative for the water line placement. We appreciate your request and hope you understand our position of not placing the water line on the bridge. Sincerely, Mark Clement Permit Specialist The Boeing Co. 206 617-2944 7Xa4 &^Was Vanessa Dolbee From: Clement, Mark D <mark.d.clement@boeing.com> Sent: Wednesday, January 09, 2013 2:58 PM To: Vanessa Dolbee Subject: Master Application Boeing work Follow Up Flag: Follow up Flag Status: Flagged Vanessa, Work on the Boeing property will include, exterior chain link fence revisions, temporary at -grade irrigation lines and an associated connection to Boeing water supply. Work on Boeing property will also include underground electrical conduit and other work associated with supplying power for the bridge deck and navigational lighting, thanks Mark Clement Permit Specialist The Boeing Co. 206 617-2944 71t vd &~4 From: Vanessa Dolbee [mailto:VDolbee(@rentonwa.gov] Sent: Wednesday, January 09, 2013 8:37 AM To: Clement, Mark D Subject: Master Application Importance: High Mark, Just a reminder I have not received the master application form for the Bridge project. Please let me know when you think you can have the original and 11 copies to the City. Thank you. Vanessa1nolbee Senior Planner Department of Community & Economic Development City of Renton Renton City Hall - 6th Floor 1055 South Grady Way Renton, WA 98057 425.430.7314 City (,,,f Rum -.or-., JAN 0 8 City of ___._ton Department of Community & Economic D.. velopment ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT: Pol COMMENTS DUE. FEBRUARY 6, 2013 APPLICATION NO. LUA12-000303, ECF, SM DATE CIRCULATED: JANUARY 23, 2013 APPLICANT: Mark Clement, Boeing PROJECT MANAGER: Vanessa Dolbee PROJECT TITLE: Boeing North Bridge Replacement Project PROJECT REVIEWER: Kayren Kittrick SITE AREA: 21,780 square feet EXISTING BLDG AREA (gross): 14,670 square feet LOCATION: 737 Logan Avenue N PROPOSED BLDG AREA (gross) 10,600 square feet SUMMARY OF PROPOSAL: The applicant is requesting SEPA Environmental Review and a Shoreline Substantial Development Permit for the replacement of the North Boeing Bridge. The project would include the demolition of the existing bridge, construction and removal of a temporary trestle and the installation of a new bridge. The bridge is located in the Shoreline High Intensity overlay, within Reach A of the Cedar River immediately before the river enters Lake Washington. The project would include work on the following parcels: 0723059001, 0723059069, 0723059007 and 07230SITYDR. In addition the project would include work in three different zones beginning from the west, Renton Municipal Airport zoned IM, Cedar River Park, zoned IH, and the Boeing manufacturing facility zoned UC -N2_ The project would remove 14,670 SF of overwater coverage and the new bridge would result in 10,600 SF of overwater coverage. Mitigation plan including 8,500 SF of shoreline restoration has been proposed. The temporary trestle would be 6,880 SF and be located south of the existing bridge. The project would be located in the floodway and floodplain of the Cedar River and located in a seismic hazard area. Removal and replacement of sediment would result in approximately 15550 CY of cut and fill. In addition, it is estimated that 23,775.4 SF of river substrate would be disturbed. The applicant provided a stream study and habitat report, geotechnical report, a no rise analysis, and a biological assessment. A. ENVIRONMENTAL IMPACT (e.g. Nora -Code) COMMENTS Element of the Probable Probable More Environment Minor Major Information Impacts Impacts Necessary Earth Air Water Plants Land/Shoreline Use Animals Environmental Health Energy/ Natural Resources B. POLICY -RELATED COMMENTS C. CODE -RELATED COMMENTS Element of the Probable Probable More Environment Minor Major information Impacts Impacts Necessary Housing Aesthetics Light/Glare Recreation Utilities Trons rtation Public 5ervices Historic/Cultural Preservation Airport Environment 20, 000 Feet 14, 000 Feet We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additional information is needed to properly assess this proposal. Signature of Director or Authorized Representative Date City of .,....ton Department of Community & Economic D—lopment ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT: Cl ) ` COMMENTS DUE: FEBRUARY Gr 2013 APPLICATION NO: LUA12-000303, ECF, SM DATE CIRCULATED: JANUARY 23, 2013 APPLICANT: Mark Clement, Boeing PROJECT MANAGER: Vanessa Dolbee PROJECT TITLE: Boeing North Bridge Replacement Project PROJECT REVIEWER: Kayren Kittrick SITE AREA: 21,780 square feet EXISTING BLDG AREA (gross): 14,670 square feet LOCATION: 737 Logan Avenue N PROPOSED BLDG AREA (gross) 10,600 square feet SUMMARY OF PROPOSAL: The applicant is requesting SEPA Environmental Review and a Shoreline Substantial Development Permit for the replacement of the North Boeing Bridge_ The project would include the demolition of the existing bridge, construction and removal of a temporary trestle and the installation of a new bridge. The bridge is located in the Shoreline High Intensity overlay, within Reach A of the Cedar River immediately before the river enters Lake Washington. The project would include work on the following parcels: 0723059001, 0723059069, 0723059007 and 072305HYDR. In addition the project would include work in three different zones beginning from the west, Renton Municipal Airport zoned IM, Cedar River Park, zoned IH, and the Boeing manufacturing facility zoned UC -N2. The project would remove 14,670 SF of overwater coverage and the new bridge would result in 10,600 SF of overwater coverage. Mitigation plan including 8,500 SF of shoreline restoration has been proposed. The temporary trestle would be 6,880 SF and be located south of the existing bridge. The project would be located in the floodway and floodplain of the Cedar River and located in a seismic hazard area. Removal and replacement of sediment would result in approximately 15,550 CY of cut and fill_ In addition, it is estimated that 23,775.4 SF of river substrate would be disturbed. The applicant provided a stream study and habitat report, geotechnical report, a no rise analysis, and a biological assessment. A. ENVIRONMENTAL IMPACT (e.g. Non -Code) COMMENTS Element of the Probable Probable More Environment Minor Major Information Impacts Impacts Necessary Earth Air Water Plants Land/Shoreline Use Animals Environmental Health Energy/ Natural Resources B. POLICY -RELATED COMMENTS C. CODE -RELATED COMMENTS Element of the Probable Probable More Environment Minor Major information Impacts impacts Necessary Housing Aesthetics Li hVGlare Recreation Utilities Trans ortotion Public Services Historic/Cultural Preservation Airport Environment 10,000 Feet 14,000 Feet We have reviewed this application with particular attention to those areas in which we hove expertise and have identified areas of probable impact or areas where additional information is needed to properly assess this proposal. 11_� � 9c� 13 Signature of Director or Authorized Representative Ir '/ Date Comments to 1/23/13 -- North Boeing Bridge — Environmental Impact 1. S. Land and Shoreline use/a. — please add City of Renton Park and Boathouse to "current use of site and adjacent properties" 2. 12. Recreation / b. and c. (listed as b twice?) — b. Concerned trail access out to Boathouse will be interrupted/ displace Canoe -Kayak customers - should access be interrupted it should be limited to brief/temporary closures, i.e. fishermen could be out on the pier and need access back to parking lot. c. Noted "rerouting of watercraft" during certain construction times or closures from river to lake ,must be determined and forwarded to City of Renton Community Services Dept. asap as boating programs are scheduled in advance to meet advertising/ marketing deadlines. 3. Confirm from "Project Narrative" and "Existing Site and Demolition Plans" and associated plans - The construction limits do not encroach into Cedar River Trail Park, or N. Riverside Dr. / Nishiwaki Lane. • Existing boundary fence will remain —damaged plants will be replaced • Access to and from project site will be from Boeing property and Renton Municipal Airport controlled gates • No material to be stored on Cedar River Trail park property • Contractor staging area will be on Boeing property City of ---,+ton Deportment of Community & Economic _ elopment ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT:r'1 w v J�' � !� COMMENTS DUE: FEBRUARY 6, 2013 E APPLICATION NO: LUA12-000303, ECF, SM DATE CIRCULATED: JANUARY 23, 2013 S r ;; ` L. APPLICANT: Mark Clement, Boeing PROJECT MANAGER: Vanessa Dolbee Z PROJECT TITLE: Boeing North Bridge Replacement Project PROJECT REVIEWER: Kayren Kittrick 9.:7 SITE AREA: 21,780 square feet EXISTING BLDG AREA (gross): 14,670 square feet x. V, LOCATION: 737 Logan Avenue N PROPOSED BLDG AREA (gross) 10,600 square feet 0 SUMMARY OF PROPOSAL: The applicant is requesting SEPA Environmental Review and a Shoreline Substantial Development Permit for the replacement of the North Boeing Bridge. The project would include the demolition of the existing bridge, construction and removal of a temporary trestle and the installation of a new bridge_ The bridge is located in the Shoreline High Intensity overlay, within Reach A of the Cedar River immediately before the river enters Lake Washington_ The project would include work on the following parcels: 0723059001, 0723059069, 0723059007 and 072305HYDR. In addition the project would include work in three different zones beginning from the west, Renton Municipal Airport zoned IM, Cedar River Park, zoned IH, and the Boeing manufacturing facility zoned UC -N2. The project would remove 14,670 SF of overwater coverage and the new bridge would result in 10,600 SF of overwater coverage. Mitigation plan including 8,500 SF of shoreline restoration has been proposed_ The temporary trestle would be 6,880 SF and be located south of the existing bridge. The project would be located in the floodway and floodplain of the Cedar River and located in a seismic hazard area. Removal and replacement of sediment would result in approximately 15,550 CY of cut and fill. In addition, it is estimated that 23,775.4 SF of river substrate would be disturbed. The applicant provided a stream study and habitat report, geotechnical report, a no rise analysis, and a biological assessment. A. ENVIRONMENTAL IMPACT (e.g. Non -Code) COMMENTS Element of the Probable Probable More Environment Minor Major information impacts Impacts Necessary Earth Air Water Plants Land/Shoreline Use Animals Environmental Health Energy) Natural Resources Element of the Probable Probable More Environment Minor Major Information Impacts Impacts Necessary Housing Aesthetics Li ht/Glare Recreation Utilities Transportation Public Services Historic/Cuituro! Preservation Airport Environment 10,000 Feet 14,000 Feet S. POLICY -RELATED COMMENTS C. CODE -RELATED COMMENTS We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additional informayioTiys needed to properly assess this proposal. Signature of Director or Authorized Representative Date -4111111111"M f I NOTICE OF APPLICATION AND PROPOSED DETERMINATION OF NON -SIGNIFICANCE -MITIGATED (DNS -M) A MaatarAppllbetlan has been Filed and aecepted with the Deparlment o! Community & Ecarwmi. Deralopment (ILEO)– Planning Division of the City of Renton. The bellowing bHelly III eacrlb., the appllcatlon and the necessary Poblir Appror ik. DATE OF NOTICE OT APPUCATION: January 23, 7013 LAND USE NUMBER: LUA12-DK303, ELF, SM pREM CTNAME: t ,O Boeing Addge Replaremenl Project pR07ECT DFSCRIPNON: The sppli,anl If requnthg SEPA Environmental Renew and a Shoreline SubstanlNl Development permit for the replacement of the North Boeing Bridge- The project would include the tlemolifto of the existhsg bridge, wnstrucLlan and removal of a temporary [+estk and the Installation of a [sew bridge The bridge Is lotaled in the Shoreline Nigh Inlendh overlay, within Reach A of the Cedar River Immediately before the enters Lake washington. The pmkcl would lmi,de work on the following parcels: 0729459001, 0723059069, 01723039007 and 072305HYDR. In ade ltlon the prnject would Include work In Three dRlerenl !ones beginning from the west, Burton Murlcipel Alrpart,bmd IM- Cedar giver Park, retied It, and the Boeing manufacturing realty sorted UC - N2, The pmfert would remove 14,670 SF of p erwater coverage and the nix brdge would result In 10,600 Sr of overwater opverage. Mitigation 0-11.6,18, inc500 5F of shoreline restarattan hes been proposed. The temporary tresde wood be 6,880 SF and be locaed south of the existing bridge. The pmlen woud be louted Int" Goodway and Gate pial of the Cedar Ii -wand foCaled Ina ohmic Inco rd area. Removal and rep Wcemem of fed men[ wOUd reSVE[ In approi erutely 15,350 Cr of cut and GN. In addition, h Is estimated that 23,775.4 SF of river subali Ater world be disturbed, The epplturd provided a stream Rudy and habitat report, geetechnlral report, a rw rise analysle, and is b,M.S cal assessment. PROJECT LOCATION: 737 Logan Avenue N l7pifONAI DETERMINATION of NON-SIGNIFICANEE, MITIGATED (DNS -A): M the lead Ageney, the City of Aenlon has tletermined thal slgnlGcant environmental impact are unlikely to —11i from the proposed prujeQ Therefore, as pCrmirted under the REM 43210 210, the City of Renton is LsIrig the Optional DN5-TA process to airs notice that a oN5- M Is likelf to be Issued. Comment periods Far the project and the proposed DNS -M are integrated Info re single co,m, perdd, There wit be no ca mment perlod following the in uanre eI the Threshold Delertntnalldn of Non. Signlflrarrre-Mhigaletl (17NYMI_ A 14EaY appeal perhd well foklow the IsSW ore ab the DN5-M, PERMFT APPLICATION bAtE: December 25, 2012 NOTICE OFCDMPLETEAPPUCATLON: January 23, 2D13 APPLICANTIPROJECT CONTACT PERSON: Mark CTeme1R, BMil Cn., 737 loon Avamue N; Renton, WA 98055; End: mark.d.thementillibeatnil PermkalR.New Requested: Frialm ental ISEPAI Review, Shoreline SubTlam111 Develepmerp Rarlew Aker Permits which may be r•kiulmd: Hydraulic Prislect Approval, USArmy Corps of Engineers Seaton 10 AulhodaaDM. and Cty of Ramon 9u11ding Permit Bern Med Studles: Biological Alfasallyam,FloodNarard, Geotechninl Report, Habitat Report, acrd Stream/cake Study If you would Ilke to tae made a party of record to [alive Further Information on this proposed project, complete this fool] and return to: City of Renton, CEO– Planning DNlsion, 3D55 Sc. El War, Renton, WA 96057. h'amelFlle Na.: North Boeing Bridge Reptarement FroJen/LUA12-0100303, ECF. SM NAME', MAIONGADDRESS: TELEPHONE NO.. Locallan where aF pllrallan may be reviewed: Dep ..I of Community& Economlc Development(CED)– plannlng Divlstan, sixth Floor Riolan City Hall, 1055 South Grady Way, Aenlon, WA 96057 PV BLICNLARING: NIA CONSI5TENCT OVERVIEW: Zanlitoland Use: The subject site is designated Empl oymenl Area lndusldal lEAO and Urhan Celle' North jUc-N} on the Lite of Aenlon Com Prehenslre land Use Map and Medium Industrlal IIMj sr,d Urban Cerner - North 2 {UC -N2} on the Clty's ZOning Map. Envsronmrnlal 0a —units that Evaluala the Proposed Prop"! Envlmnmental (SEPA; Checkliut Pere I.p—nt Regutatlenx Used Far Pi Mhoilattah: The prnjer[ wgi be sob EPH to the City's SEPA ordinance, RMC 4.5-D7D and other eppllcahk [odes and regulatlM$ as appropriate. Propaaed MibWlon Meaures: The foyvvlrtg Mltigatlon Measurer will Ilkeiy be Imposed on the proposed project. These recommended MRlgatipn Measures address project impacts no[ covered by esirting codes and regalations as Chad above. • The oppekanr shag t PJy with eh condfn'on of opprmnl Included in the Hydraulic Project Approval INPAJ end the Arm j,C"s Serrim 10 ApfhWzoridn; and • The oPpik-t sho,'I comply with the ncommeh'fM ns Included In the Stondord strepm Study Pir—ohre and HoWlat Data Aersam, prepared by AMfC Fnw'rPnnitnt is Idm trVTW ' Inc, deredDerember 201I; end • The eppgcnnl sholl comply wlfh the recOmmendvflwtf lncfuded In the Na-FIIse and Scour Report prepared by AMEC Fnv7ranmenr B Infrmfructwe, Mc, doted December 14, 2011, and The cppgcont shah campfy wh'h rhe rnonmmFndgNonf intruded in the Technical Inf irmgi2M ReN , prepwed by illi [Anal doted December 22, 2012, and • The applkanr slrahtomply wfth the Frconlmerfdetfonf included m the GeolacbkkW Englneenng Study prepored bF MEE daEed Ml 17, 2012. Comments on the above app hunlon must be supmltted In wdting to Vanessa Oalb•e, Jl Plawer, CED– Planning blylsldn, JOSS south Grelly Way, Renton, WA 46057, by 5:00 PM W February 6, 21713. If you have questions about Ilus proposes or wish to be made a part? of tecard and reoelve additional nabbkation by mall, [oaten the Project Manager Anyone who submds written—menu will automeNully became a parry M record and will be no0hed of any derision on this project. CONTACT PERSON; Vanessa Dolbee, Senior Planner; Tel: (425) 430-7314; E[nl: vdolbee@rentonwa.gov PRASE fNO.UDE THE PRO)l NUMBER WHEN CALLING FOR PROPER FILE IDENTIFICATION CERTIFICATION I, t1/Q hereby certify that S copies of the above document were posted in conspicuous places or nearbyMebed proDate: Si ned STATE OF WASHINGTON SS COUNTY OF KING I certify that I know or have satisfactory evidence that 'r c, s 5-L,- �P signed this instrument and acknowledged it to be his/her/their free and voluntary act for the uses and purposes mentioned in the instrument. Dated: 6 Notary Public in acid for the State of Washington Notary (Print): i_4 A _ r r'd,-e4' appointment expires: '2 J. CITY OF RENTON DEPARTMENT OF COMMUNITY & ECONOMIC DEVELOPMENT - PLANNING DIVISION AFFIDAVIT OF SERVICE BY MAILING On the 23rd day of January, 2013, 1 deposited in the mails of the United States, a sealed envelope containing Acceptance Letter, Notice of Application, Environmental Checklist, Reduced Site Plan documents. This information was sent to: Name Representing Agencies — NOA, Env. Checklist, Site Plan See Attached 300' Surrouding Property Owners — NOA only See attached Mark Clement, Boeing Co. Owner/Applicant/Contact (Signature of Sender): STATE OF WASHINGTON } `-� } 55 COUNTY OF KING ) —9Z I certify that I know or have satisfactory evidence that Stacy M. Tucker signed this instrument and acknowledged it to be his/her/their free and voluntary act mentioned in the instrument. 4fjf o,��It y r igk,'rfit 1ffl� r�14� r�iibses Dated: C} �..Y, ,. ��. 3 dot3 Notary Pul6lic in and for the State of Washington Notary (Print): 4E ,Q. G -! My appointment expires: cal( a-& t'3 Project Name: Boeing North Bridge Replacement Project Project Number: LUA12-000303, ECF, SM template - affidavit of service by mailing AGENCY (DOE) LETTER MAILING (ERC DETERMINATIONS) Dept. of Ecology *" WDFW - Larry Fisher* Muckleshoot Indian Tribe Fisheries Dept. Environmental Review Section 1775 12th Ave. NW Suite 201 Attn: Karen Walter or SEPA Reviewer PO Box 47703 Issaquah, WA 98027 39015 — 172"d Avenue SE Olympia, WA 98504-7703 Auburn, WA 98092 WSDOT Northwest Region * Duwamish Tribal Office * Muckleshoot Cultural Resources Program " Attn: Ramin Pazooki 4717 W Marginal Way SW Attn: Ms Melissa Calvert King Area Dev- Serv., MS -240 Seattle, WA 98106-1514 39015 172nd Avenue SE PO Box 330310 Auburn, WA 98092-9763 Seattle, WA 98133-9710 US Army Corp. of Engineers * KC Wastewater Treatment Division * Office of Archaeology & Historic Preservation* Seattle District Office Environmental Planning Supervisor Attw Gretchen Kaehler Attn: SEPA Reviewer Ms, Shirley Marroquin PO Box 48343 PO Box C-3755 201 S. Jackson ST, MS KSC-NR-050 Olympia, WA 98504-8343 Seattle, WA 98124 Seattle, WA 98104-3855 Boyd Powers * Depart. of Natural Resources PO Box 47015 Olympia, WA 98504-7015 KC Dev. & Environmental Serv. City of Newcastle City of Kent Attn: SEPA Section Attn: Steve Roberge Attn: Mr. Fred Satterstrom, AICP 900 Oakesdale Ave. SW Director of Community Development Acting Community Dev. Director Renton, WA 98055-1219 13020 Newcastle Way 220 Fourth Avenue South Newcastle, WA 98059 Kent, WA 98032-5895 Metro Transit Puget Sound Energy City of Tukwila Senior Environmental Planner Municipal Liaison Manager Steve Lancaster, Responsible Official Gary Kriedt Joe Jainga 6200 Southcenter Blvd. 201 South Jackson Street KSC-TR-0431 PO Sox 90868, MS: XRD-01W Tukwila, WA 98188 Seattle, WA 98104-3856 Bellevue, WA 98009-0868 Seattle Public Utilities Real Estate Services Attn: SEPA Coordinator 700 Fifth Avenue, Suite 4900 PO Box 34018 Seattle, WA 98124-4018 *Note: If the Notice of Application states that it is an "Optional DNS", the marked agencies and cities will need to be sent a copy of the Environmental Checklist, Site Plan PMT, and the Notice of Application. "Department of Ecology is emailed a copy of the Environmental Checklist, Site Plan PMT, & Notice to the following email address: sepaunit@ecy.wa.gov template - affidavit of service by mailing DSB INVESTMENTS LLC MCDONALDS CORP 046/0017 SOUTHPORT ONE LLC 95 S TOBIN ST #201 PO BOX 182571 1083 LAKE WASHINGTON BLVD N #50 RENTON, WA 98057 COLUMBUS, OH 43218 RENTON, WA 98056 ANDERSON BUSY BEE INC SOUTHPORT LLC DEWING ROLLAND L 5015 RAINIER AVE S 1083 LAKE WA BLVD N #50 210 NW 5TH ST SEATTLE, WA 98118 RENTON, WA 98056 RENTON, WA 98055 KEODARA HOPE BURNETT LLC NELSON MICHAEL J 101 NW 6TH ST C/O JEANNE BOYCE JONES PO BOX 3351 RENTON, WA 98057 24124 135TH AVE SE SEATTLE, WA 98114 KENT, WA 98042 GREEN KENNETH GERGAMO ANNA T+CASSERLY BRIAN SODOMA PHILIP MARK 504 S TOBIN ST 16359 NE 50TH ST RENTON, WA 98055 420 S TOBIN ST REDMOND, WA 98052 RENTON, WA 98055 STORWICK RICHARD ALLEN+FREY MEHRENS GEORGE F JR+GLORIA ROANOKE GROUP THE CAROL JEAN 316 S TOBIN ST 9505 ROOSEVELT WAY NE 1510 9TH ST RENTON, WA 98055 SEATTLE, WA 98115 ANACORTES, WA 98221 CHENG ANGELA CHIEM MY THU+DAT H LU YANG ANDREWLA N 229 SW 193RD PL 665 PASCO PL 502 S TOBIN ST SEATTLE, WA 98166 RENTON, WA 98059 RENTON, WA 98055 DESPUIG ERLINDA D REDLIN BRIAN D DAWSON JAMES D+RENEE E 416 S TOBIN ST 1727 HARBOR SW #N402 10838 LAKERIDGE DR S RENTON, WA 98055 SEATTLE, WA 98126 SEATTLE, WA 98178 REYNOLDS GLENN D NICKELS PAUL M JPC PROPERTIES LLC 55 LOGAN AVE 1901 47TH AVE SW 15826 SE 141ST ST RENTON, WA 98055 SEATTLE, WA 98116 RENTON, WA 98059 EDMAN GEORGE D FOSTER LUIDA R+EDDIE D BONNER ROBERT G JR 2104 28TH AVCT SW 51 LOGAN AVE S 1507 JONES AVE NE PUYALLUP, WA 98373 RENTON, WA 98055 RENTON, WA 98056 CHAU BILL+ANN TOBACCO ENTERPRISES LLC SCHUMSKY DONALD W+MARGARET 500 S TOBIN ST 1701 LAKESIDE AVE S 2019 JONES AVE NE RENTON, WA 98055 RENTON, WA 98055 RENTON, WA 98056 CHEN TOMMY & SHU-MEI H VICERAL EZRA FELIAS+FLORENCE SALVATION ARMY THE 8125 144TH AVE SE VILA 111 QUEEN ANNE AVE N #300 NEWCASTLE, WA 98059 418 S TOBIN ST 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31117 E LAKE MORTON DR SE 114 NW 6TH ST RENTON, WA 98055 KENT, WA 98042 RENTON, WA 98057 SWEENEY FRANCINE A PHAM DYLAN 205 NW 6TH PHAM TAMMY RENTON, WA 98055 9367 MARCUS AVE S SEATTLE, WA 98118 City of r NOTICE OF APPLICATION AND PROPOSED DETERMINATION OF NON -SIGNIFICANCE -MITIGATED (DNS -M) A Master Application has been filed and accepted with the Department of Community & Economic Development (CED) — Planning Division of the City of Renton. The following briefly describes the application and the necessary Public Approvals. DATE OF NOTICE OF APPLICATION: January 23, 2013 LAND USE NUMBER: LUA12-D00303r ECF, SM PROJECT NAME: North Boeing Bridge Replacement Project PROJECT DESCRIPTION: The applicant is requesting SEPA Environmental Review and a Shoreline Substantial Development Permit for the replacement of the North Boeing Bridge. The project would include the demolition of the existing bridge, construction and removal of a temporary trestle and the installation of a new bridge. The bridge is located in the Shoreline High Intensity overlay, within Reach A of the Cedar River immediately before the river enters Lake Washington. The project would include work on the following parcels: 0723059001, 0723059069, 0723059007 and 072305HYDR. In addition the project would include work in three different zones beginning from the west, Renton Municipal Airport zoned IM, Cedar River Park, zoned IH, and the Boeing manufacturing facility zoned UC- N2- The project would remove 14,670 SF of overwater coverage and the new bridge would result in 10,600 SF of overwater coverage, Mitigation plan including 8,500 SF of shoreline restoration has been proposed. The temporary trestle would be 6,880 SF and be located south of the existing bridge. The project would be located in the fiaodway and floodplain of the Cedar River and located in a seismic hazard area. Removal and replacement of sediment would result in approximately 15,550 CY of cut and fill. In addition, it is estimated that 23,775.4 SF of river substrate would be disturbed. The applicant provided a stream study and habitat report, geotechnical report, a no rise analysis, and a biological assessment. PROJECT LOCATION: 737 Logan Avenue N OPTIONAL DETERMINATION OF NON -SIGNIFICANCE, MITIGATED (DNS -M): As the Lead Agency, the City of Renton has determined that significant environmental impacts are unlikely to result from the proposed project. Therefore, as permitted under the RCW 43.21C.110, the City of Renton is using the Optionaf DNS -M process to give notice that a DNS - M is likely to be issued. Comment periods for the project and the proposed DNS -M are integrated into a single comment period. There will be no comment period following the issuance of the Threshold Determination of Non - Significance -Mitigated (DNS -M). A 14 -day appeai period will follow the issuance ofthe DNS -M. PERMIT APPLICATION DATE: December 26, 2012 NOTICE OF COMPLETE APPLICATION: January 23, 2013 APPLICANT/PROJECT CONTACT PERSON: Mark Clement, Boeing Co., 737 Logan Avenue N; Renton, WA 98055; Eml. mark.d.clement@boeing.com Permits/Review Requested: Environmental (SEPA) Review, Shoreline Substantial Development Review Other Permits which may be required: Hydraulic Project Approval, US Army Corps of Engineers section 10 Authorization, and City of Renton Building Permit Requested Stud les; Biological Assessment, Flood Hazard, Geotechnical Report, Habitat Report, and Stream/Lake Study If you would like to be made a party of record to receive further information on this proposed project, complete this farm and return to: City of Renton, CED — Planning Division, 1055 So. Grady Way, Renton, WA 98057, Name/File No.: North Boeing Bridge Replacement Project/LUA12-000303, ECF, SM NAME: MAILING ADDRESS: City/State/Zip: TELEPHONE NO.: Location where application may be reviewed: Department of Community & Economic Development {CED) — Planning Division, Sixth Floor Renton City Hall, 1055 South Grady Way, Renton, WA 98057 PUBLIC HEARING: N/A CONSISTENCY OVERVIEW: Zoning/Land Use: The subject site is designated Employment Area Industrial {FAQ and Urban Center North (UC -N) on the City of Renton Comprehensive Land Use Map and Medium Industrial (IM) and Urban Center - North 2 (UC -N2) on the City's Zoning Map. Environmental Documents that Evaluate the Proposed Project: Environmental (SLPA) Checklist Development Regulations Used For Project Mitigation: The project will be subject to the City's SEPA ordinance, RMC 4-9-070 and other applicable codes and regulations as appropriate. Proposed Mitigation Measures: The following Mitigation Measures will likely be imposed on the proposed project. These recommended Mitigation Measures address project impacts not covered by existing codes and regulations as cited above. • The applicant shall comply with all condition of approval included in the Hydraulic Project Approval (NPA) and the Army Corps Section 10 Authorization; and • The applicant shall comply with the recommendations included in the Standard Stream Study Narrative and Habitat Data Report prepared byAM£CEnvironment & Infrastructure, Inc., dated December 2012; and • The applicant shall comply with the recommendations included in the No -Rise and Scour Report prepared by AMEC Environment & Infrastructure, Inc., dated December 14, 2012; and • The applicant shall comply with the recommendations included in the Technical Information Report prepared by BergerABAM, dated December 12, 2012; and ■ The applicant shall comply with the recommendations included in the Geotechnical Engineering Study prepared by 5&EE, dated May 17, 2012. Comments on the above application must be submitted in writing to Vanessa Dolbee, Senior Planner, CED — Planning Division, 1055 South Grady Way, Renton, WA 98057, by 5:00 PM on February 6, 2013. If you have questions about this proposal, or wish to be made a party of record and receive additional notification by mail, contact the Project Manager. Anyone who submits written comments will automatically become a party of record and will be notified of any decision on this project. CONTACT PERSON: Vanessa Dolbee, Senior Planner; Tel: (425) 430-7314; Eml: vdolbee@rentonwa.gov PLEASE INCLUDE THE PROJECT NUMBER WHEN CALLING FOR PROPER FILE IDENTIFICATION Denis Law- Mayor City cr t C ti Department of Community and Economic Development January 23, 2013 C.E."Chip"Vincent, Administrator Mark Clement Boeing Co. 737 Logan Avenue N Renton, WA 98055 Subject: Notice of Complete Application Boeing North Bridge Replacement Project, LUA12-000303, ECF, 5M Dear Mr. Clement: The Planning Division of the City of Renton has determined that the subject application is complete according to submittal requirements and, therefore, is accepted for review. It is tentatively scheduled for consideration by the Environmental Review Committee on February 18, 2013. Prior to that review, you will be notified if any additional information is required to continue processing your application. . . Please contact me at .(425) 430-7314 if you have any questions. Sincerely, Vanessa Dolbee Senior Planner Renton City Hall . 1.055 South Grady Way • Renton, Washington 98057 . rentonwa_gov y..a7 jl�'9 City of Renton LAND USE PERMIT 08 Z61, M ASTERAPPLICATIOiT-n) PROPERTY OWNER(S) NAME: Boeing Corp. ADDRESS: 737 Logan Ave n. CITY: Renton ZIP: 98055 TELEPHONE NUMBER: (206 617-2944) APPLICANT (if other than owner) NAME: Mark Clement COMPANY (if applicable): Boeing ADDRESS: 737 Logan Ave n. CITY: Renton ZIP: 98055 TELEPHONE NUMBER 206 617-2944 CONTACT PERSON NAME: Mark Clement COMPANY (if applicable): Boeing Co. ADDRESS: 737 Logan Ave n. CITY: Renton ZIP:98055 Q:web/pw/devsery/forms/planning/masterapp.doc TELEPHONE NUMBER AND E-MAIL ADDRESS: 206 617- 2944 Mark.d.clement@boeing.com PROJECT INFORMATION PROJECT OR DEVELOPMENT NAME Cedar River North Bridge Repacement Project PROJECTIADDRESS(S)/LOCATION AND ZIP 737 Logan Ave n Renton WA 98055: KING COUNTY ASSESSOR'S ACCOUNT NUMBER(S): 0723059001 Boeing , 072305HYDR waterway, 0723059096, 0723059007 Renton EXISTING LAND USE(S): Manufactoring PROPOSED LAND USE(S): Manufactoring EXISTING COMPREHENSIVE PLAN MAP DESIGNATION: UCN PROPOSED COMPREHENSIVE PLAN MAP DESIGNATION (if applicable): NA EXISTING ZONING Urban Center north 2 PROPOSED ZONING (if applicable): same as existing SITE AREA (in square feet�#004$;4>�j51 sq. ft acres) SQUARE FOOTAGE' UA YS TO BE DEDICATED none N'w ``"�� a - .' SQUARE FOOTAG&P-'W\PATE AdtI$'S,EASEMENTS: 19,200 sq ft :L T. ''- 0!109113 PRC CT INFOR PROPOSED RESIDENTIAL DENSITY IN UNITS PER NET ACRE (if applicable): NA NUMBER OF PROPOSED LOTS (if applicable): NA NUMBER OF NEW DWELLING UNITS (if applicable): NA NUMBER OF EXISTING DWELLING UNITS (if applicable): SQUARE FOOTAGE OF PROPOSED RESIDENTIAL BUILDINGS (if applicable): NA SQUARE FOOTAGE OF EXISTING RESIDENTIAL BUILDINGS TO REMAIN (if applicable): approx. 6 MILLION SQ FT SQUARE FOOTAGE OF PROPOSED NON-RESIDENTIAL BUILDINGS (if applicable): 12,000 sq ft SQUARE FOOTAGE OF EXISTING NON-RESIDENTIAL BUILDINGS TO REMAIN (if applicable): NA MAT ION contim NET FLOOR AREA OF NON-RESIDENTIAL BUILDINGS (if applicable): NA NUMBER OF EMPLOYEES TO BE EMPLOYED BY THE NEW PROJECT (if applicable): NA PROJECT VALUE: $ 177,000 IS THE SITE LOCATED IN ANY TYPE OF ENVIRONMENTALLY CRITICAL AREA, PLEASE INCLUDE SQUARE FOOTAGE (if applicable): J AQUIFER PROTECTION AREA ONE ❑ AQUIFER PROTECTION AREA TWO :3 FLOOD HAZARD AREA 5000 sq. ft. 0 GEOLOGIC HAZARD sq. ft. El HABITAT CONSERVATION sq. ft. L3 SHORELINE STREAMS AND LAKES 5000 sq. ft. Li WETLANDS sq. ft. LEGAL DESCRIPTION OF PROPERTY SITUATE IN THE _ne QUARTER OF SECTION 7_, TOWNSHIP _23n_, RANGE -5e_, IN THE CITY OF RENTON, KING COUNTY, WASHINGTON. TYPE OF APPLICATION & FEES List all land use applications being applied for: 1. —x—Site plan review 3. —x SEPA CHECKLIST 2. _ _X Shoreline exemption 4. Staff will calculate applicable fees and postage: $ Billed AFFIDAVIT OF OWNERSHIP I, (Print Name/s) M �\ V jC C I e' t e 0 T , declare that I am (please check one) _ the current owner of the property involved in this application or �,, L the authorized representative to act for a corporation (please attach proof of authorization) and that the foregoing statements and answers herein contained and the information herewith are in all respects true and correct to the best of my knowledge and belief. I certify that I know or have satisfactory evidence that _jy), ry— Ctr.v-%t�,,+ signed this instrument and acknowledged it to be hislherltheir free and voluntary act for the uses and purposes mentioned in the instrument. r (Signature of Owner/Representative) Notary (Print)_ ,0V 8 Notary Public in and for the State of Washington My appointment expires: ��; ,.<. 4 aCd 3 2 01/09/13 Denis Law city .Y le - Department of Community and Economic Development December 26, 2012 C.E."Chip"Vincent, Administrator Mark Clement Boeing Corporation 737 Logan Avenue North Renton, WA 98055 Subject: Notice of Incomplete Application Bridge Replacement Project, LUA12-000303 Dear Mr. Clement: The Planning Division of the City of Renton has determined that the subject application is incomplete according to submittal requirements and, the following items will need to be submitted by March 26, 2013, in order to continue processing your application: • One original and 11 copies of the master application form. The form shall be updated to be consistent with the remainder of the application packet. Please contact me at (425) 430-7314 if you have any questions. Sincerely, Vanessa Dolbee Senior Planner cc: Boeing Corporation /-Owner(s) Renton City Hall . 1055 South Grady Way • Renton, Washington 98057 . rentonwa.gov PIJANN1NG DIVISION WA =R OFSUBMITTAL REQ1 CEMENTS FOR LAND USE APPLICATIONS This requirement may be waived by: 9. Property Services PROJECT NAME : r� e 2. Public Works Plan Review 3. Building DATE: 4. Planning H:1G=D%Da1alForms-TemptateslSSelf--Help HandoutsTlanrninglwaiverotsubmittalregs.xls OW09 . PLANNING DIVISION WAIVER wF SUBMITTAL REQUIREmmiNTS FOR LAND USE APPLICATIONS This requirement may be waived by. 1. Property Services 2. Public Works Plan Review 3. Building 4. Pianning PROJECT NAME: 6 r i DATE: over City of Renton Planning Division DEC72 6 L� ,� H:ICEDCatevorms-TemplatesLSetf-Help HandotftY:IlEinninglwaiveroWbrWd@lmqsAs OWN Plat Name Reservation 'M Public Works Approval Lettere Citi Screening Detail 4 Stream or Lake Study, Standard N . Stream or Lake Mitigation Plan Title Report or Plat Certificate 4 Traffic Study 2 H: Urban Design Regulations Analysis VV) lbiq-e KNOW( i 69: Wetlands Mitigation Plan, Final 4 ........ . Wetlands Repor0elineatlon4 Applicant Agreement Statement 2AND 3 ,inventory of Existing Sites 2 AND 3 Lease Agreement, Draft 2 AND 3 Map of Existing Site Conditions 2 AND 3 Map 0fView Area 2AND3 PhotosimulationS 2AND 3 This requirement may be waived by. 1. Property Services 2. Public Works Plan Review 3. Building 4. Pianning PROJECT NAME: 6 r i DATE: over City of Renton Planning Division DEC72 6 L� ,� H:ICEDCatevorms-TemplatesLSetf-Help HandotftY:IlEinninglwaiveroWbrWd@lmqsAs OWN PREAPPLICATION MEETING FOR BRIDGE REPLACEMENT - BOEING NORTH CEDAR RIVER MOUTH OF CEDAR RIVER CITY OF RENTON Department of Community and Economic Development Planning Division PRE12-078 October 18, 2012 Contact Information: Planner: Vanessa Dolbee Public Works Reviewer: ]an Illian Fire Prevention Reviewer: Corey Thomas Building Department Reviewer: Craig Burnell Phone: 425.430.7314 Phone: 425.430.7216 Phone: 425.430.7024 Phone: 425.430.7290 RECEIVED DEC 21 2�1� RjVING pIVlS�N Please retain this packet throughout the course of your project as a reference. Consider giving copies of it to any engineers, architects, and contractors who work on the project. You will need to submit a copy of this packet when you apply for land use and/or environmental permits. Pre-screening: When you have the project application ready for submittal, call and schedule an appointment with the project manager (planner) to have it pre- screened before making all of the required copies. The pre -application meeting- is informal and non-binding. The comments provided on the proposal are based on the codes and policies in effect at the time of review. The applicant is cautioned that the development regulations are regularly amended and the proposal will be formally reviewed under the regulations in effect at the time of project submittal. The information contained in this summary is subject to modification and/or concurrence by official decision -makers (e.g., Hearing Examiner, Planning Director, Development Services Director, Department of Community and Economic Development Administrator, Public Works Administrator and City Council). Qtyo DEPARTMENT OF COMMUNITY DFj AND ECONOMIC DEVELOPMENT M E M O R A N D U M DATE: October 17, 2012 TO: Vanessa Dolbee, Planner FROM: Jan Illian, Plan Review 0 SUBJECT: Boeing Cedar River Bridge Replacement 737 — Logan Ave N. PRE 7.2-078 NOTE: The applicant is cautioned that information contained in this summary is preliminary and non- binding and may be subject to modification and/or concurrence by official city decision -makers. Review comments may also need to be revised based on site planning and other design changes required by City staff or made by the applicant. I have completed a preliminary review for the above -referenced proposal. The followingcomments are based on the pre -application submittal made to the City of Renton by the applicant. Storm Drainage 1. Erosion control shall comply with the 2409 King County Surface Water Manual. 2. City Code requires compliance with the Critical Area Ordinance. 3. A drainage plan and drainage report will be required with the site plan application. The report shall comply with the 2009 King County Surface Water Manual and the 2009 City of Renton Amendments to the KCSWM, Chapters 1 and 2. All core and any special requirements shall be contained in the report. Based on the City's flow control map, this site fails within the Flow Control Duration Standard, Existed Conditions. The drainage report will need to follow the area specific flow control requirements under Core Requirement #3. 4. The bridges and approach roads must pass the 100 -year flow without creating hydraulic restrictions that case an increase in the floodplain elevation flooding. The design of the bridge and approach road shall demonstrate compliance with the floodplain zero -rise and compensatory storage requirements in the City's Flood Hazard code. Please refer to section 4.3.3 of the City adopted 2009 King County Surface Water Design Manual for design standards for bridges. The zero rise hydraulic analysis of the new bridge shall be compared to the hydraulic analysis completed for the FEMA approved April 2006 Cedar River Flood Study, using the same river bed elevation (maximum allowable bed elevation) used in the Cedar River Flood Study, to demonstrate compliance with the zero rise requirement. The zero rise hydraulic analysis for the new bridge shall be provided to the City for review to verify compliance. H:\CED\Planning\Current Plan ning\PREAPPS\12-o78.Vanessa\Plan Review Comments PRE 12-078.docx 5. A zero rise hydraulic analysis is also required for the construction of a temporary bridge over the Cedar River that may be needed during the replacement of the North Boeing Bridge. The zero rise hydraulic analysis for the temporary bridge may use the use the existing survey elevation of the Cedar River channel bed elevation, rather than the maximum allowable bed elevation used in FEMA 2006 Cedar River Flood Study, provided that the temporary bridge will not remain in place for more than two (2) flood seasons. The zero rise hydraulic analysis for the temporary bridge shall be provided to the City for review to verify compliance. 6. The preferred minimum clearance between the 100 -year flood elevation and the lowest elevation of the bottom low chord of the bridge is 3 -ft. Due to the physical limitations to raising the bridge and making it accessible for airplane movements and conflicts with the Renton Municipal Airport runway it is recognized that 3 -feet of clearance may not be feasible. The new bridge design must strive to provide as much clearance as possible (2 -ft). The new bridge or installation of any temporary bridges shall not have their low chord elevation placed below the existing bridge low chord elevation and demonstrate compliance with the floodplain zero rise requirement. During a flood, large woody debris (LWD) is carried downstream that could cause problems at bridges and clearance maximizing clearance under the bridge is recommended. In addition, minimizing the number of support columns/piling in the floodway is recommended to meet the zero -rise floodway criteria and to minimize the potential for large woody debris from getting caught on support columns/piling under the bridge. 7. The April 2006 Cedar River Flood Study approved by FEMA established the 100 -year FEMA floodplain elevation at the North Boeing Bridge to be elevation 24 (NAVD 88 Datum) or elevation 20.44 (NGVD 1929 Datum). The existing bridge low chord is at elevation 22.06 (NAVD 88 Datum) or elevation 18.5 (NGVD 1929 Datum). 8. The bridge replacement will need to -comply with the FEMA National Flood Insurance Program requirements related to obstruction of the floodway and substantial. improvement requirements. The existing bridge was constructed prior to the adoption of the FEMA floodplain maps for the Cedar River. The replacement of the existing bridge may exceed the "substantial improvement" threshold that would require the replacement of the North Boeing Bridge to be desigried and constructed to current FEMA floodplain standards. 9. The replacement of the North Boeing Bridge will involve work in the FEMA 100 -yr floodplain and will need to address the requirements associated with the National Marine Fisheries Service Biological Opinion regarding the FEMA National Flood Insurance Program impacts to endangered species as defined in the biological opinion applicable Reasonable and Prudent Alternatives requirements. 10. The North Boeing Bridge Replaceirnent project will need to provide a Stormwater Technical Information Report demonstrating compliance all requirements with the City adopted 2009 King County Surface Water Design Manual and City amendments. 11. Any temporary piles or existing piles that are not removed completely from the river channel shall be cut of a minimum of 2 -feet below the design dredge depth for Army Corps of Engineers Lower Cedar River Section 205 Flood Hazard Reduction Project. Based upon the Army Corps of Engineers construction plans for the dredging of the lower 1.25 miles of the Cedar River, that they did in 1998 as part of the Lower Cedar River Section 205 Flood Hazard Reduction Project, the design dredge depth extends down to elevation 10.56 (NAVD 88 Datum) for both upstream and downstream of the North c:\usersViliian\documents\plan review conllnents pre 12-078 2012.docx 0 Boeing bridge. Any piles or abutments that are not removed from the channel will need to be cut-off our pounded down to an elevation of 8.56 (NAVD 88 Datum) or below. 12. The new bridge design need allow for and accommodate access for future maintenance dredging of the Cedar River under the bridge. c.\users\jillian\documents\plan review comments pre 12-078 2012.docx DEPARTMENT OF cir�af � COMMUNITY AND � ECONOMIC DEVELOPMENT M E M O R A N D U M DATE: October 18, 2012 TO: Pre -Application File No. 12-078 FROM: Vanessa Dolbee, Senior Planner SUBJECT: Bridge Replacement — Boeing North Cedar River General: We have completed a preliminary review of the pre -application for the above - referenced development proposal. The following comments on development. and permitting issues are based on the pre -application submittals made to the City of Renton by the applicant and the codes in effect on the date of review. The applicant is cautioned that information contained in this summary may be subject to modification and/or concurrence by official decision -makers (e.g., Hearing Examiner, Community & Economic Development Administrator, Public Works Administrator, Planning Director, Development Services Director, and City Council). Review comments may also need to be revised based on site planning and other design changes required by City staff or made by the applicant. The applicant is encouraged to review all applicable sections of the Renton Municipal Code. The Development Regulations are available for purchase for $50.00 plus tax, from the Finance Division on the first floor of City Hall or online at www.rentonwa.gov Project Proposal: The subject property is over the Cedar River and along a portion of the Renton Municipal Airport and Cedar River Park, parcel numbers 0723059007, 0723059096, and 072305HYDR. The site straddles the Cedar River and is located in the Industrial Heavy (IH) zone along the east side of the river and the Industrial Medium (IM) zone along the west side of the river. The pre -application packet indicates that the proposal is to rebuild the bridge currently located at the subject site. However, in order for the Boeing Company to maintain operations while the new bridge is under construction a temporary bridge running parallel to the existing bridge is included in the proposal. Current Use: The property currently contains an existing bridge and is utilized by Boeing as a means of transporting aircraft from the manufacturing facility to the Renton Municipal Airport. Zoning: The property is located within the Employment Area Industrial (EAI) land use designation and the Medium Industrial (IM) and Industrial Heavy (IH) zoning designations. Roads are permitted outright in the IM and IH zone. Development Standards: The project would be subject to RMC 4-2-130A, "Development Standards for Industrial Zoning Designations" effective at the time of complete application. Although, the subject project would be considered a road improvement and/or transportation improvement project and would not be subject to such standards as density, setbacks, lot size, h:\ced\planning\current planning\preapps\12-078.vanessa\127855 (im & ih boeing bridge shoreline).doc Bridge Replacement— Boeing h Cedar River, PRE12-078 Page 2 of 4 October 18, 2012 etc. As such, the following report addresses only those development standards that appear to be applicable at this time. Critical Areas: The subject project is located over the Cedar River and is adjacent to Lake Washington, both Shorelines of the State. As such, the project is required to comply with the City of Renton's Shoreline Master Program (SMP). The bridge and associated improvements would be located in Reach A of the Cedar River, which is located in the Shoreline High Intensity designation. The subject project would result in impacts to the Cedar River and potentially Lake Washington, as such a stream study, a supplemental stream study, and a mitigation plan identifying "no net loss's would be required with the project application. Additionally, the City of Renton Sensitive Areas maps indicate the site is located in an area of seismic hazards and flood hazards. The seismic hazard is related to potential liquefaction of soils during an earthquake event. A geatechnical analysis for the site is required. The analysis needs to assess soil conditions and detail construction measures to assure stability. Because development is proposed within the floodplain and floodway, the applicant should address the issues raised in the Final Biological Opinion And Maanuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Consultation and propose mitigation for any anticipated impacts as it would relate to the referenced publication, in the SEPA review for the project. The SEPA checklist should be provided to the National Marine Fisheries Service (NMFS) and the Federal Emergency Management Agency (FEMA) for their review and comment. In addition, a Floodplain Biological Assessment shall be provided. Furthermore, encroachments, including fill, new construction, substantial improvements, and other development are prohibited in the floodway unless certification by a registered professional engineer demonstrates through hydrologic and hydraulic analyses performed in accordance with standard engineering practice that: i. Encroachments shall not result in any increase in flood levels during the occurrence of the base flood discharge; and ii. There are no adverse impacts to the subject property or abutting or adjacent properties; and iii. There are no higher flood elevations upstream; and iv. The impact due to floodway encroachment shall be analyzed using future land use condition flows. Compensatory Storage Required: Development proposals and other alterations shall not reduce the effective base flood storage volume of the floodplain. If grading or other activity will reduce the effective storage volume, compensatory storage shall be created on the site or off the site if legal arrangements can be made to assure that the effective compensatory storage volume will be preserved over time. Compensatory storage shall be configured so as not to trap or strand salmonids after flood waters recede and may be configured to provide salmonid habitat or high flow refuge whenever suitable site conditions exist and the configuration does not adversely affect bank stability or existing habitat. Finally, the subject site is located in area of known Cultural Resources. Based on the possible presence of archeological discoveries within the vicinity of the subject site a SEPA mitigation measures would likely be applied to the subject project. h:\ced\planning\current planning\preapps\12-078.vanessa\127855 (im & ih boeing bridge shoreline).doc Bridge Replacement -1 g North Cedar River, PRE12-078 Page 3 of 4 October 18, 2012 Shoreline Regulations: The objective of the High Intensity Overlay is to provide opportunities for large-scale office and commercial employment centers as well as multi -family residential use and public services. This district provides opportunities for water -dependent and water - oriented uses while protecting existing ecological functions and restoring ecological functions in areas that have been previously degraded. Development may also provide for public use and/or community use, especially access to and along the water's edge. Roads are a permitted use in the Shoreline High Intensity overlay, the following standards apply to new roads within the Shoreline Jurisdiction: General Standards: New and expanded transportation facilities shall be designed to achieve no net loss of ecological functions within the shoreline. To the maximum extent feasible the following standards shall be applied to all transportation projects and facilities: Roads: L Facilities shall be located outside of the shoreline jurisdiction and as far from the land/water interface as possible. Expansion of existing transportation facilities shall include analysis of system options that assess the potentia] for alternative routes outside shoreline jurisdiction or set back further from the land/water interface. ii. Facilities shall be located and designed to avoid significant natural, historical, archaeological, or cultural sites, and mitigate unavoidable impacts. iii. Facilities shall be designed and maintained to prevent soil erosion, to permit natural movement of groundwater, and not adversely affect water quality or aquatic plants and animals over the life of the facility. iv. All debris and other waste materials from construction shall be disposed of in such a way as to prevent their entry by erosion into any water body and shall be specified in submittal materials. v. Facilities shall avoid the need for shoreline protection. vi. Facilities shall allow passage of flood waters, fish passage, and wildlife movement by using bridges with the longest span feasible or when bridges are not feasible, culverts and other features that provide for these functions. vii. Facilities shall be designed to accommodate as many compatible uses as feasible, including, but not limited to: utilities, viewpoint, public access, or trails. i. New public or private roads and driveways shall be located inland from the land/water interface, preferably out of the shoreline, unless: (a) Perpendicular water crossings are required for access to authorized uses consistent with the Shoreline Master Program; or (b) Facilities are primarily oriented to pedestrian and nonmotorized use and provide an opportunity for a substantial number of people to enjoy shoreline areas, and are consistent with policies and regulations for ecological protection. ii. Road locations shall be planned to fit the topography, where possible, in order that minimum alteration of existing natural conditions will be necessary. iii. RCW 36.87.130 prohibits vacation of any right-of-way that abuts freshwater except for port, recreational, educational or industrial purposes. Therefore, development, h:\ced\planning\current planning\preapps\1Z-078.vanessa\127855 (im & ih boeing bridge shoreline).doc Bridge Replacement — Boeing i Cedar River, PRE12-078 Page 4 of 4 October 18, 2012 abandonment, or alteration of undeveloped road ends within Shoreline Master Program jurisdiction is prohibited unless an alternate use is approved in accordance with the Shoreline Master Program. Environmental Review The subject project would be subject to SEPA Environmental Review because it is located in lands covered by water. Therefore an environmental checklist is a submittal requirement. An environmental determination will be made by the Renton Environmental Review Committee. This determination is subject to appeal by either the project proponent, by a citizen of the community, or another entity having standing for an appeal. Permit Requirements The proposal would require Environmental (SEPA) Review and a Shoreline Substantial Development Permit (SSDP). All applications can be reviewed in an estimated time frame of 10- 12 weeks once a complete application is accepted. The application fee for SEPA Review (Environmental Checklist) is $1,000 and $2,400 for the SSDP. There is a technology fee, of 3 %, based on the total land use application fees for the project. Detailed information regarding the land use application submittal is provided in the attached handouts. In addition to the required land use permits, separate construction and building permits would be required. The review of these permits may occur concurrently with the review of the land use permits, but cannot be issued prior to the completion of any appeal periods. *Once the application materials are complete, the applicant is strongly encouraged to have one copy of the application materials pre-screened at the 6th floor front counter prior to submitting the complete application package. Please call for an appointment. h:\ced\planning\current planning\preapps\12-078.vanessa\127855 (im & ih boeing bridge shoreline).doc w Q N � r u r u .n w C m to O w m Qhs O o .. J Z z [) C Lu .x GI 1 C U d r� Q u m U 2 Ea m = - m m H c p �• N O w + `1 0.,N E 1' 'p 71 CO 4-1 ■ � •y'[�1 O } O � ■ wirr Q �1 _ � ■ ■� i t o e� n H a =vim C U7 N N �W � N lis N SCS I a m c ~ I IL t CD Icn 'nY IL LL I I < r wy� in w Q N � r u r u .n w C m to O w m Qhs O o .. J Z z [) CL O N a� cam z c Em j ca z E E o p m a LL E w? 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Ln Ln � I c a c L N � I d m m Q Q t N U1 I Z r Q' O Q = ql cel U7 DO � 0 lL N ol�l V) Z Clement, Mark D From: Vanessa Dolbee [VDolbee@Rentonwa.gov] Sent: Monday, October 29, 2012 9:53 AM To: Clement, Mark D Cc: Ronald Straka; Abdoul Gafour; Jan Illian; Leslie A Betlach; Kelly Beymer; Suzanne Dale Estey; Jennifer T. Henning; Ryan Zulauf Subject: FW: DRAFT - Update Pre -app comments PRE12-078 Boeing Bridge Mark, Following the pre -application meeting for the Boeing Bridge Replacement project. New and update information has been gathered and consolidated below. The following summarizes additional and/or updated comments for PRE12- 078: Stormwater• 1. We checked the April 2006 FEMA Cedar River flood Study and verified that the correct 100 -yr floodplain elevation is as shown in comment #4 below (elevation 20.97 NAVD 88 or 17.41 NGVD 1929) that revises the previously for the pre -application. The floodplain information that I provided for the pre -application meeting was incorrect. The previous information was based upon was based upon our visually review of the floodplain profile map (approximate) that was done earlier (January 23, 2012), but was subsequently updated based upon the model (January 31, 2012). The correct floodplain elevation information that was extracted from the Cedar River Flood Study hydraulic model and is more accurate. 2. The 100 -yr floodplain elevation that Boeing is showing on their plans is 17.07 NGVD 1929. This difference may be due to their updated a more accurate horizontal location of the upstream low chord of the new bridge, which we will need to review as part of the zero rise hydraulic analysis. 3. The Cedar River Flood Study 100-yearfloodplain elevation that is provided (17.41 NGVD) is located at the middle of the existing North Boeing Bridge as modeled in the Cedar River Flood Study, which is approximately the location of the proposed new bridge. The existing North Boeing Bridge, as modeled in the Cedar River Flood Study included the span over the Cedar River and the existing apron areas located upstream of the section that spans the Cedar River. Water: 1. The Water Utility is requesting that the bride replacement project includes the design and construction of a 12 -inch water line across the new bridge and extending to the end of the bridge approach slabs. 2. We would like to meet with Boeing staff and their engineering consultant firm Berger Abam to discuss this matter in more details. Community Services (Parks): 1. The Cedar River Boathouse is a leased facility. The concessionaire will need access during construction. 2. Maintain access to the Cedar River Boathouse for park patrons during construction. 3. Maintain a detour route (if needed) for continued access. Post signage and utilized flaggers as needed. 4. The sooner the City has the schedule for construction the better for public/concessionaire notification. Recommend coordinated PR with the City. 5. We support the contractor staging and construction access from the Boeing property. 6. Mitigation planting should be revised to eliminate the use of plant materials with thorns and spines as these materials retain litter. (Rosa nutkana, Rosa Pisocarpa, and Mahonia-all species). 7. Recommend minimizing the number of fruiting plant species due to waterfowl. 8. The current plans indicate mitigation planting on park property on the land side of an existing bulkhead. While not requiring the removal of the bulkhead, the City would support the bulkhead removal but only after further analyzing that the removal would not compromise the integrity of the existing park property. 9. Coordinate access with the City for mitigation planting within the park boundaries. 10. The "non -motorized" boa- ich upstream of the bridge, also hosts t enton Rowing Club. We will 'need to coordinate access for that activity. Please let me know if you have any questions and/or concerns about the above comments. Thank you, Vanessa Doffee Senior Planner Department of Community & Economic Development City of Renton Renton City Hall - 6th Floor 1055 South Grady Way Renton, WA 98057 425.430.7314 City of Renton Planning Division DEC'2 6 2012 R[Ecay D PROJECT NARRATIVE BOEING COMMMERICAL AIRPLANES RENTON NORTH BRIDGE REPLACEMENT DECEMBER 2012 Applicant: Boeing Commercial Airplanes Attn: Mark Clement PO BOX 3707, MC 1W-09 Seattle WA 98124 206.617.2944 9 . —""jdFjrw" Iyer erABAM 333019th Avenue South - Suite 300 Federal Way, Washington 98003-2600 Phone: 206.431.2300 PROJECT NARRATIVE BOEING COMMERCIAL AIRPLANES NORTH BRIDGE REPLACEMENT December 2012 TABLE OF CONTENTS 1.0 PROJECT DESCRIPTION.................................................................................1 1.1 Project Name, Size and Location.........................................................................1 1.2 Proposed Project.................................................................................................1 1.3 Land Use Permits................................................................................................2 1.4 Zoning Designation ................. 1.5 Current Uses.......................................................................................................2 1.6 Special Site Features..........................................................................................2 1.6.1 Cedar River.............................................................................................. 2 1.6.2 Topography..............................................................................................3 1. 6.3 Vegetation................................................................................................3 1. 6.4 Critical Areas........................................................................................ 3 1.7 Soil Type and Drainage Conditions.....................................................................3 1.8 Proposed Use of the Property.............................................................................4 1.9 Access.................................................................................................................4 2.0 CONSTRUCTION INFORMATION....................................................................4 2.1 Construction Schedule and Costs........................................................................4 2.1 Estimated Quantities...........................................................................................4 2.2 Tree Removal....-................................................................................................5 3.0 IN -WATER WORK............................................................................................5 3.1 Cedar River........................................................................................5 ATTACHMENTS Attachment A: Vicinity Map Attachment B: Site Plan Boeing Commercial Airplanes — North Bridge Replacement BergerABAM Project Narrative December 2012 Renton, Washington Page i BOEING COMMERCIAL AIRPLANES - NORTH BRIDGE REPLACEMENT PROJECT NARRATIVE 1.0 PROJECT DESCRIPTION 1.1 Project Name, Size and Location Boeing Commercial Airplanes (Boeing), as the applicant, is proposing to replace the North Bridge over the Cedar River at Boeing's Renton Facility. The North Bridge (owned by the Boeing Corp.) is located at the mouth of the Cedar River directly before it enters Lake Washington. The bridge is primarily located on aquatic lands and property that is owned by the State of Washington and managed by the Washington State Department of Natural Resources. The bridge approach on the east side of the Cedar River is located on land owned by the City of Renton (City). The west approach is located on the Renton Municipal Airport. The project site includes parcels 0723059007, 0723059096, and 072305HYDR in the City of Renton, in the NE 1/4 of Section 7, T23N, RSEWM . The project site is approximately 1/2 acre in size and bounded to the north by Lake Washington, to the south by Cedar River Park and the Cedar River, to the east by the Boeing Renton Facility, and to the west by the Renton Municipal Airport, Clayton Scott Field. 1.2 Proposed Project This project is extremely critical to the business operations of Boeing Commercial Airplanes in Renton. All production aircraft assembled in the Renton factory must be transported across this bridge to the Renton Municipal Airport where they undergo final testing before take -off. There is no alternative means to transport aircraft from the factory to the airport. Loss of function of this bridge would disrupt production, resulting in economic losses and impacts to employment. The existing bridge was built in the 1940s and has undergone various modifications and repairs over time. In light of the essential function of the bridge and the anticipated increases in airplane production rates, the capacity of the bridge and the associated risks were evaluated. It was determined that modifying or upgrading the bridge would be unacceptable and that the bridge must be replaced. The new bridge will consist of steel plate girders with a precast concrete deck supported on drilled shafts for two piers in the Cedar River and by driven steel pipe piles on two piers located upland. To facilitate construction activities and to avoid interruption to the Boeing production schedule, a temporary aircraft and construction bridge will be built to the south of the existing bridge. The existing bridge structure and approach aprons will be demolished for the construction of the temporary and replacement bridges. The aprons will not be replaced resulting in a net decrease in impervious surfaces. The demolition will include removing the foundations below the planned dredge elevation and the removal of the bulkheads. The channel and shoreline embankments within the Boeing Commercial Airplanes — North Bridge Replacement BergerABAM Project Narrative December 2012 Renton, Washington Page I limits of the project will be re -graded, armored, and restored, including new plantings that will increase the habitat values of the riparian area along the Cedar River. 1.3 Land Use Permits The following land use permits and reviews are being requested as part of this submittal. • State Environmental Policy Act (SEPA) Review • Shoreline Substantial Development Permit Other permits required include • City of Renton building permit • Washington State Department of Fish and Wildlife Hydraulic Project Approval • US Army Corps of Engineers Section 10 Authorization 1.4 Zoning Designation The property is located within the Employment Area Industrial (EAI) Comprehensive Plan land use designation with the west side of the Cedar River zoned Industrial Medium (IM) and the east side zoned Industrial Heavy (IH). Adjacent zoning is the same as the project site with the exception of property to the east, which is zoned Urban Center North 2 (UC -N2) The Cedar River and Lake Washington are shorelines of the state and subject to the Shoreline Management Act. The City's Shoreline Master Program (SMP) designates the project area as Shoreline High Intensity and it is in Cedar River Reach A and Lake Washington reaches I and J. 1.5 Current Uses As stated above in Section 1.2, the site is currently used as a bridge to transport aircraft assembled in the Renton factory over the Cedar River to the Renton Municipal Airport where they undergo final testing before take -off. The only existing structure on the project site is the bridge which will be replaced and the aprons which will be removed. Surrounding areas and uses include Lake Washington to the north of the proposed bridge. The Cedar River Boathouse is located to the northwest. Renton Municipal Airport is located to the west and the Boeing Renton Facility is to the east. The City's Cedar River Trail is located to the south. 1.6 Special Site Features 1.6.1 Cedar River The proposed project will span the Cedar River, which is a designated shoreline of the state. The project will not occur in areas with existing trees or vegetation. The shoreline currently occupied by the existing aprons will be restored to improve shoreline habitat. Boeing Commercial Airplanes — North Bridge Replacement BergerABAM Project Narrative December 2012 Renton, Washington Page 2 The Standard. Stream Study prepared for the project discusses the existing conditions and project impacts on the Cedar River in greater detail. 1.6.2 Topography The topography is flat with the exception of the immediate banks of the Cedar River and Lake Washington. 1.6.3 Vegetation The Cedar River shoreline consists of riparian vegetation. A vegetation survey was conducted 100 feet upstream along the riverbank and along Lake Washington. The project site is dominated by the existing bridge and associated aprons and contains little vegetation. Vegetation outside these areas is limited to maintained landscaping associated with the adjacent park and airfield and areas along the riverbank. Vegetation along both banks of the river consists of noxious weeds, including Himalayan blackberry, common tansy, and reed canary grass. A number of unidentified grasses also were observed on the eastern bank. 1.6.4 Critical Areas 1.6.4.1 Frequently Flooded Areas The project will occur within designated floodplains and floodways. The project will be designed to ensure no net rise in flood Ievels and to avoid any adverse impacts to the property and any adjacent properties. 1.6.4.2 Geologic & Seismic Hazards The City of Renton Sensitive Areas Liquefaction Hazards map indicates the project area has having a High Susceptibility rating for liquefaction and a High Seismic Severity. The Report of Geotechnical Investigation prepared by S&EE is included with the submittal to provide an assessment of soil conditions and provide construction recommendations for the site. 1.7 Soil Type and Drainage Conditions The Report of Geotechnical Investigation prepared by S&EE for the project indicates that the site consists of approximately 10 feet of fill over multiple different layers of alluvial deposits. Stormwater from the existing bridge currently sheet flows north to Lake Washington. A small portion of the bridge runoff sheet flows to a landscaped area west of the project site. The runoff enters into an existing structure which discharges into the Cedar River through a 5 -inch diameter pipe. The paved area immediately east of the bridge is collected by slot drains and conveyed to a treatment system on the Boeing property. After the runoff is treated it is discharged into the Cedar River through an existing 30 - inch diameter pipe. Boeing Commercial Airplanes — North Bridge Replacement Project Narrative Renton, Washington BergerABAM December 2412 Page 3 1.8 Proposed Use of the Property As stated above in Section 1.2, all production aircraft assembled in the Renton factory must be transported across this bridge to the Renton Municipal Airport where they undergo final testing before take -off. There will be no change in the use of the property with the new bridge. The existing bridge consists of a 32 feet wide paved surface. The replacement bridge will be 50 feet wide. 1.9 Access The project site is in a controlled access area associated with Renton Municipal Airport and. Boeing's Renton Facility. Access is provided through the security gates to these facilities. A public pedestrian path provides access to the Cedar River boathouse directly east of the project site. This access is bounded by gates on either side that open to allow planes to pass through as necessary. This path is accessed from N. Riverside Drive directly south of the project site. N. Riverside Drive is the closest public roadway to the project. The bridge does not serve the public, and is located within the boundaries of Renton Municipal Airport. Public transit does not serve the immediate area of the proposed project and no transit needs are associated with it. 2.0 CONSTRUCTION INFORMATION 2.1 Construction Schedule and Costs Construction is scheduled to begin in 2013 and last approximately 2 to 3 years. Total estimated construction cost is approximately 9 million dollars. 2.1 Estimated Quantities The proposed project will consist of the following project elements with details on the quantities of work below the OWHM; Demolition of bridge and bridge aprons a Remove 196 piles, bridge piers and foundations o PIace and remove up to 8 steel pipe piles for support during demolition o Remove and replace approximately 5,000 cubic yards (CY) of sediment within cofferdams o Disturb approximately 22,600 square feet (SF) of river substrate o Expose 111.8 SF of previously buried benthic habitat o Remove a total of 14,670 SF of overwater coverage Construction and removal of a temporary trestle o Install and remove 36,24 inch steel pipe piles (28 below OHWM) o Disturb approximately 1,100 SF of river substrate o Install and remove 6,880 SF of decking Installation of new bridge o Install 4, 6 foot diameter concrete drilled shafts that transition to 4 foot diameter columns from 2 foot below the dredge line. o Install 10, 24 inch steel pipe piles upland Boeing Commercial Airplanes — North Bridge Replacement Project Narrative Renton, Washington BerberABAM December 2012 Page 4 o Install and remove approximately 40, 16 to 24 inch steel pipe piles for temporary construction and reaction platforms (32 below= OHWM). a Area of new bridge over the Cedar Diver will be approximately 10,600 SF a Approximately 75.4 SF of river substrate will be buried by new bridge piers o Approximately 5,300 CY of cut and 250 CY of fill will be removed and placed o Approximately 690 cubic yards of riprap will be placed for scour protection Shoreline restoration o Small volume of fish gravel may be placed below the OHWM o Approximately 260 linear feet of restoration o Approximately 8,500 SF of shoreline restoration including 2,600 SF of riparian vegetation. During construction a laydown area and temporary office and storage buildings will be placed. The location, type and size of these features will be determined by the contractor for the project but will be located on Boeing property. 2.2 Tree Removal The proposed project does not include any tree removal activities. 3.0 IM -WATER WORK As indicated above, the project will require work activities within 100 feet of and below the OHWM of the Cedar River. All in -water work will be conducted from the shoreline or the temporary trestle during the in -water work window established by the Washington State Department of Fish and Wildlife and US Army Corps of Engineers. No heavy equipment will be placed into or enter the Cedar River. The western bank of the Cedar River consists of a steel -pile and timber -lagging bulkhead, above which is located a steep bank approximately 15 feet wide. On the western bank, vegetation consists primarily of Himalayan blackberry (Rubus armeniacus), butterfly bush (Buddleia davidii), reed canarygrass (Phalaris arundinacea), and common tansy (Tanacetum vulgare); all are species listed by King County as noxious weeds. A small, unidentified species of willow (Salix spp.) was also growing along the west bank along with various unidentified grasses. The eastern bank consists of a steel -pile and timber -lagging bulkhead, above which is located a steep bank approximately 20 feet wide. A portion of the riparian area along the eastern bank of the river within 100 feet of the bridge appears to have been landscaped with native vegetation consisting of Nootka rose (Rosa nutkana), redosier dogwood (Cornus sericea), and mock orange (Philadelphus lewisii). Additionally, the same noxious weeds found on the western bank also occur on the eastern bank, including Himalayan blackberry, common tansy, and reed canarygrass. A number of unidentified grasses also were observed on the eastern bank. Boeing Commercial Airplanes — North Bridge Replacement Project Narrative Renton, Washington BergerABAAI December 2012 Page 5 CONSTRUCTION MITIGATION DESCRIPTION BOEING COMMMERICAL AIRPLANES RENTON NORTH BRIDGE REPLACEMENT DECEMBER 2012 Applicant: Boeing Commercial Airplanes Attn: Mark Clement PO BOX 3707, MC 1W-09 Seattle WA 98124 206.617.2944 rL""AFjfjV" Ber e AI3AM 33301 9th Avenue South • Suite 300 �� Federal Way, Washington 98003-2600 enton Phone: 206.431.2300 Planning Division UEC'2 6 2012 REIE91YED CONSTRUCTION MITIGATION DESCRIPTION BOEING COMMERCIAL, AIRPLANES NORTH BRIDGE REPLACEMENT December 2012 = TABLE OF CONTENTS 1.0 CONSTRUCTION SCHEDULE .......................................................................... 1 1.1 Project Description ............................................................................................... 1 1.3 Construction Dates .............................................................................................. 1 1.3 Hours and Days of Operation ............................................................................... 1 2.0 HAUL ROUTE INFORMATION .^,,,~,,,_____.______.____________.__,,2 3./1 MINIMIZATION MEASURES ____._,^,^,,,,,,^,.,,,^,,,,,,^,,,,,_._________.___,7 /1.0 NIGHTTIME CONSTRUCTION WORK .............................................................. q 5.0 PRELIMINARY TRAFFIC CONTROL PLAN .......................................................3 6.[} CRANE USE ..................................................................................................... 3 Boeing Commercial Airplanes -No,thxudgoxcpkaccm,u Construction Mitigation Description Renton, Washington nergerABxM December 2012 Page BOEING COMMERCIAL AIRPLANES - NORTH BRIDGE REPLACEMENT CONSTRUCTION MITIGATION DESCRIPTION 1.0 CONSTRUCTION SCHEDULE 1.1 Project Description Boeing Commercial Airplanes (Boeing), as the applicant, is proposing to replace the North Bridge over the Cedar River at Boeing's Renton Facility. The North Bridge (owned by the Boeing) is located at the mouth of the Cedar River directly before it enters Lake Washington. The existing bridge was built in the 1940s and has undergone various modifications and repairs over time. In light of the essential function of the bridge and the anticipated increases in airplane production rates, the capacity of the bridge and the associated risks were evaluated. It was determined that modifying or upgrading the bridge would be unacceptable and that the bridge must be replaced. The new bridge will consist of steel plate girders with a precast concrete deck supported on drilled shafts for two piers in the Cedar River and by driven steel pipe piles on two piers located upland. To facilitate construction activities and to avoid interruption to the Boeing production schedule, a temporary aircraft and construction bridge will be built to the south of the existing bridge. The existing bridge structure and approach aprons will be demolished for the construction of the temporary and replacement bridges. The aprons will not be replaced. The demolition will include removing the foundations below the planned dredge elevation and the removal of the bulkheads. The channel and shoreline embankments within the limits of the project will be re -graded, armored, and restored, including new plantings that will increase the habitat values of the riparian area along the Cedar River. 1.2 Construction Dates The proposed project is scheduled to begin construction in April/May of 2013 and will take approximately 2 to 3 years to construct. The estimated end date of construction is December 2015. 1.3 Hours and Days of Operation The following days and hours are anticipated for construction of the project; June 1 to August 15 - During authorized in -water work window. This date may vary based on approvals from WDFW and USACE. o Six days per week o 12 to 16 hour workdays from 6 AM to 6 PM, up to 10 PM o During drilled shaft operations, there may be 4 days where contractor may work 24 hour shifts to minimize impacts on the airport. Anticipate approximately 4 of these shifts occurring during the fish window of 2014. Boeing Commercial Airplanes - North Bridge Replacement BergerABAM Construction Mitigation Description December 2012 Renton, Washington Page I + August 16 to July 31 0 Four and/or five days per week o S hour workday from 7 AM to 3:30 PM and/or a 10 hour workday from 6:30 AMto5PM These time periods identified are subject to change based on the requirements of the jurisdiction and needs of construction and Boeing will notify the City of any changes as they occur. 2.0 HAUL ROUTE INFORMATION Equipment, materials and supplies will access the site through existing access points for the Boeing Renton Plant. No access will be made .from Riverside Drive or .from, the Renton Airport. 3.0 MINIMIZATION MEASURES The project proposes the following minimization measures to minimize dust, traffic and transportation impacts, erosion, mud, noise, and other noxious characteristics. Because of the limited amount of exposed earth, dust is not anticipated to be a significant problem. To control dust the contractor will water surfaces that dust is generated from. In addition, the project will also utilize street sweepers to clean and remove material from paved surfaces. During demolition of the existing bridge a variety of methods will be used to minimize impacts. Nets, platforms or other material will placed under the existing bridge to capture debris from demolition activities before it enters the river. A floating debris boom will be placed downstream to capture any floating materials. Cofferdams, which may include steel sheets, casings, boxes or super sacks along with silt curtains, will be utilized to isolate portions of river during certain construction activities to reduce the potential for turbidity. Clean water from inside the cofferdams that meets the standards set by applicable permits will be returned directly to river. Water with the potential for turbidity or other pollutants will be directed to baker tanks and held to allow sediments to settle out before being discharged. • To minimize traffic and transportation impacts, the project proposes to limit the entrance and egress of truck traffic from the site. The project does not anticipate large volumes of truck or vehicle movements on the project site. Any oversized elements will be subject to highway haul permit restrictions. • Sites soils consist of fill and have a slight to moderate erosion hazard risk. A temporary erosion and sediment control plan will be designed in accordance with Section 1.2.5.3 of the King County Surface Water Design Manual. Typical erosion control Best Management Practices (BMPs) will be utilized during Boeing Commercial Airplanes — North Bridge Replacement BergerABAM Construction Mitigation Description December 2012 Renton, Washington Page 2 construction to control site erosion and prevent the tracking of mud out of construction areas. These elements may include minimizing exposed soils, stabilizing exposes soils, using erosion control fences and inlet protection. • The closest residence is approximately 700 feet to west of the project site. Park users at the adjacent park and boat house are also considered Class A EDNAs. To mitigate noise impacts from construction activities (including pile driving operations), most work will be completed during daylight hours. To reduce noise from construction during nighttime hours, the contractor will implement the use of alternate backup alarms, dump truck bed liners and dump gate closers. To mitigate noise from pile driving, some piles will be partially installed using a vibratory hammer and all. pile driving operations will be conducted during the day. A bubble curtain will be utilized during use of the impact hammer for in - water piles to mitigate underwater noise. • The Cedar River is used by a variety of river users, mainly recreational water craft. Traffic on the river may be restricted during certain construction activities for the safety of river users and construction personnel. Activities that may require restrictions include demolition of the existing bridge, driving piles, and the placement of girders and bridge decking. Appropriate signage, placement of buoy strings and other features would be installed to alert users of dangers, restrictions and closures. The project team will work with the City of Renton and other users (such as the Renton Rowing) to coordinate closures or restrictions. 4.0 NIGHTTIME CONSTRUCTION WORK Some nighttime work will be required to ensure scheduled in -water work can be completed prior to the end of the authorized work window. Nighttime construction operations may involve constructing drilled shafts, pouring concrete, and miscellaneous bridge construction activities. An application for a noise variance will be made to the City prior to undertaking any construction activity occurring after 10 PM or before 7AM. 5.0 PRELIMINARY TRAFFIC CONTROL PLAN The proposed project will not be located on, require closure of or otherwise impact any city streets. Therefore, it is not anticipated that a traffic control plan will be needed for this project. 6.0 CRANE USE The project anticipates the need for a variety of cranes during construction of various project elements. The project is on and adjacent to the Renton Airport and the cranes and other equipment will extend into various airport surfaces. Construction will likely impact airport operations and may require closures during certain construction events. Boeing and the project team are working closely with Renton Airport staff to develop a safety and construction plan that minimizes affects to airport operations and maintains safety airport users as well as project staff. In addition, appropriate notifications and approvals will be made to and obtained from the Federal Aviation Administration prior to beginning construction of the project. Boeing Commercial Airplanes - North Bridge Replacement BergerABAM Construction Mitigation Description December 2012 Renton, Washington Page 3 ENVIRONMENTAL CHECKLIST A. BACKGROUND 1. Name of proposed project, if applicable: Boeing North Cedar Bridge Replacement 2. Name of applicant: The Boeing Company P.O. Box 3707, MIS IW -09 Seattle, WA 98124-2207 3. Address and phone number of applicant and contact person: Mark Clement Facilities Permits/Land use The Boeing Company P.O. Box 3707, MIS 1W-09 Seattle, WA 98124-2207 Ph [206 617-2944] 4. Date checklist prepared: December 2012 3. Agency requesting checklist: City 0i" 4'J'�'ryt0 rj L'FC-2 6 n City of Renton, Washington State Department of Fish & Wildlife. Washington State Department of Ecology, 6. Proposed timing or schedule (including phasing, if applicable): April 2012 to December 2015 7. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain. None known at this time. 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. 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. JARPA Permits with the Corps of Engineers, Washington State Departments of Fish and Wildlife and Department of Ecology, Biological Assessment for Section 7 consultation under the Endanger Species Act and Standard Stream Narrative and Habitat Data Report has been prepared as part of this project and will be part of City of Renton permit ENVIRONMENTAL CHECKLIST 1 1 2/1 91201 2 No -Rise and Scour Report, North Boeing Bridge and Temporary Work Trestle, AMSC 2012 Storm Drainage — Technical Information Report North Boeing Bridge Replacement Project, Berger ARAM 2012 10. List any government approvals or permits that will be needed for your proposal, if known. Federal: Corp of Engineers State of Washington: Corp of Engineers Section 10 and 404 Permit Endangered Species Act Section 7 Consultation Ecology (401 Water Quality Certification, CZM Consistency) Washington Department of Natural Resources (Right of Access) King County: None City of Renton/Local: State Environmental Policy Act Review, Renton Land use/ Shoreline, Building & utilities 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. (Lead agencies may modify this form to include additional specific information on project description Project Description Boeing Commercial Airplanes (Boeing) is proposing to replace the North Bridge over the Cedar River at Boeing's Renton Facility. The North Bridge (owned by the Boeing Corp.) is located at the mouth of the Cedar River directly before it enters Lake Washington. The bridge is located on aquatic lands and property that is owned by the State of Washington and managed by the Washington State Department of Natural Resources. The bridge approach on the east side of the Cedar River is located on land owned by the City of Renton (City). The west approach is located on the Renton Municipal Airport. The project site includes parcels 0723059007, 0723059096, and 072305HYDR in the City of Renton, in the NE '/4 of Section 7, T23N, and RSEWM. ENVIRONMENTAL CHECKLIST 2 1 12/19/2012 The project site is approximately 1/2 acre in size and bounded to the north by Lake Washington, to the south by Cedar River Park and the Cedar River, to the east by the Boeing Renton Facility, and to the west by the Renton Municipal Airport, Clayton Scott Field. This project is extremely critical to the business operations of Boeing Commercial Airplanes in Renton. All production aircraft assembled in the Renton factory must be transported across this bridge to the Renton Municipal Airport where they undergo final testing before take -off. There is no alternative means to transport aircraft from the factory to the airport. Loss of function of this bridge would disrupt production, resulting in economic losses and impacts to employment. The existing bridge was built in the 1940s and has undergone various modifications and repairs over time. In light of the essential function of the bridge and the anticipated increases in airplane production rates, the capacity of the bridge and the associated risks were evaluated. It was determined that modifying or upgrading the bridge would be unacceptable and that the bridge must be replaced. The new bridge will be 50 ft wide by 240 ft long The new bridge will consist of steel plate girders with a precast concrete deck supported on drilled shafts for two piers in the Cedar River and by driven steel pipe piles on two piers located upland. To facilitate construction activities and to avoid interruption to the Boeing production schedule, a temporary aircraft and construction bridge will be built to the south of the existing bridge. The existing bridge structure and approach aprons will be demolished for the construction of the temporary and replacement bridges. The aprons will not be replaced resulting in a net decrease in impervious surfaces. The demolition will include removing the foundations below the planned dredge elevation and the removal of the bulkheads. The channel and shoreline embankments within the limits of the project will be re -graded, armored, and restored, including new plantings that will increase the habitat values of the riparian area along the Cedar River 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. Site address: 737 Logan Ave. North Renton, Washington ENVIRONMENTAL CHECKLIST 3 1 12119!2012 Refer to Neighborhood Map; and Site Map for project location. Legal Description on cover sheet B. ENVIRONMENTAL ELEMENTS 1. Earth a. General description of the site (circle one). Flat, rolling, hilly, steep slopes, mountainous, other...... Flat; b. What is the steepest slope on the site (approximate percent slope)? 1 %; 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. Sandy silt loam d. Are there surface indications or history of unstable soils in the immediate vicinity? if so, describe. Yes. The area is identified as presenting seismic hazards due to liquefaction e. Describe the purpose, type, and approximate quantities of any filling or grading proposed. Indicate source of fill. Fill will be needed to protect the shoreline and to create a suitable base for planting. Estimates are that approximately 5,200 cy of earth will be removed and 205 cy of filter stone and 690 cy of rip rap will be required, clean native fill f Could erosion occur as a result of clearing, construction, or use? If so, generally describe. Yes, Risks will be mitigated using best management practices & temporary erosion and sedimentation control (TESC) plan will be in place to prevent erosion. These elements may include minimizing exposed soils, stabilizing exposes soils, using erosion control fences and inlet protection ENVIRONMENTAL CHECKLIST 4 1 12n srzol s g. About what percent of fhe site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? 98% There will be a net reduction in impervious surfaces from the existing condition. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any. Temporary erosion control measures will be used by contractor .These elements may include minimizing exposed soils, stabilizing exposes soils, using erosion control fences and inlet protection 2. Air a. What types of emissions to the air would result from the proposal (ie., dust, automobile, odors, and industrial wood smoke) during construction and when the project is completed? if any, generally describe and give approximate quantities if known. Dust and smoke, from construction equip. during normal construction activities. 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. Mitigation measures to reduce emissions include ensuring that machines and equipment used during construction are well maintained. 3. Water a. Surface: 9) 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. Cedar River which flows into Lake Washington ENVIRONMENTAL CHECKLIST 5 1 12J19/2012 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. Yes, Work elements include removal of the existing bridge and support structures, placement of new and temporary bridge including the placement of temporary piles for the bridge and construction platforms and construction of drilled shafts, removal of the existing bulkhead and regarding of the shoreline and the placement of shoreline protective measures on the newly constructed river banks 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. See project narrative, clean native fill 4) Will the proposal require surface water withdrawals or diversions? Give general description, purpose, and approximate quantities if known. Yes. Cofferdams, which may include steel sheet piles, casings, boxes or super sacks along with silt curtains, will be utilized to isolate portions of river during certain construction activities to reduce the potential for turbidity. Clean water from inside the cofferdams that meets the standards set by applicable permits will be returned directly to river. Water with the potential for turbidity or other pollutants will be directed to baker tanks and held to allow sediments to settle out before being discharged. 1 5) Does the proposal lie within a 100 -year floodplain? if so, note location on the site plan. Yes G) Does the proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge. No b. Ground. 1) Will ground water be withdrawn, or will water be discharged to ground water? Give general description, purpose, and approximate quantities if known. No ENVIRONMENTAL CHECKLIST 6 1 1211912012 2) Describe waste material 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): 7) 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. Storm water from the existing bridge currently sheet flows north to Lake Washington. A small portion of the bridge runoff sheet flows to a landscaped area west of the project site. The runoff enters into an existing structure which discharges into the Cedar River through a 6 -inch diameter NPDES permitted pipe. The paved area immediately east of the bridge is collected by slot drains and conveyed to a treatment system on the Boeing property. After the runoff is treated it is discharged into the Lake Washington through an existing 60 -inch diameter pipe. 2) Could waste materials enter ground or surface waters? If so, generally describe. None anticipated d. Proposed measures to reduce or control surface, ground, and runoff water impacts, if any: All storm water drain inlets in and around the proposed construction operations and staging areas will be covered. The contractor will be required to maintain spill kits on site to address potential spills during construction 4. Plants a. Check or circle types of vegetation found on the site: deciduous tree: alder, maple, aspen, other evergreen tree: fir, cedar, pine, other shrubs, grass, pasture, crop or grain, wet soil plants: cattail, buttercup, bullrush, skunk cabbage, other water plants: water lily, eelgrass, milfoil other types of vegetation Other than a few invasive plant species (Himalayan blackberry, no plants occur within the proposed construction area. ENVIRONMENTAL CHECKLIST 7 1 1211912012 b. What kind and amount of vegetation will be removed or altered? Minimum non native vegetation (weeds) to be removed during construction c. List threatened or endangered species known to be on or near the site. Migratory Salmon- Puget Sound Chinook salmon, Puget Sound steelhead trout-, Coastal/Puget Sound Bull trout in Cedar River, see stream narrative study for detailed list d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any: The proposed plan incorporates shoreline restoration along both banks of the lower Cedar River after bridge construction activities are completed. Only native vegetation will be used in the restoration (refer to Standard Stream Narrative for detailed description of proposed shoreline restoration). 5. Animals a. Circle any birds and animals, which have been observed on or near the site or are known to be on or near the site: Birds and animals which have been observed on or near the site are listed below: Birds: seagulls, crows, eagles, Blue heron Mammals: Beaver Fish: Coho salmon, Chinook salmon sockeye salmon steelhead and cutthroat trout, native char (bull trout) and long fin smelt b. List any threatened or endangered species known to be on or near the site. Puget Sound Steelhead and their status are under ESA, the species is listed as "threatened," as are Puget Sound Chinook salmon and coastal/Puget Sound bull trout c. Is the site part of a migration route? If so, explain. Yes Pacific Flyway; see 2003 Boeing EIS. Puget Sound Chinook salmon, Puget Sound steelhead trout, coho salmon, sockeye salmon, coastal cutthroat trout, non-anadroumous rainbow trout d Proposed measures to preserve or enhance wildlife, if any. ENVIRONMENTAL CHECKLIST 8 1 1211912012 Proposed shoreline restoration using native vegetation along both banks of the Cedar River, reduction in overwater coverage by over 4,000 square feet B. 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. Electric power, b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. M 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. Energy efficient utility systems 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. No 9) Describe special emergency services that might be required. b. Noise None 2) Proposed measures to reduce or control environmental health hazards, if any: NA 1) What types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other)? None, Renton airport nearby 2) What types and levels of noise would be created by or associated with the project on a short-term or a long-term basis (for example: traffic, construction, operation, other)? Indicate what hours noise would come from the site. Temporary noise Construction from equipment, 24 hour operation may be planned for certain elements of the proposed project to mitigate ENVIRONMENTAL CHECKLIST 9 I iuiarzoiz airport impacts.- The loudest noise source on the project will likely be an impact hammer utilized to drive temporary and permanent piles 3) Proposed measures to reduce or control noise impacts, if any: To reduce noise from construction during nighttime hours, the contractor will implement the use of alternate backup alarms, dump truck bed liners and dump gate closers. To mitigate noise from pile driving, some piles will be partially installed using a vibratory hammer and all pile driving operations will be conducted during the day. A bubble curtain will be utilized during use of the impact hammer for in -water piles to mitigate underwater noise. 8. Land and shoreline use a. What is the current use of the site and adjacent properties? The site is fully developed as an aircraft manufacturing and final assembly facility. Renton Airport on adjacent side b. Has the site been used for agriculture? if so, describe. if.7 c. Describe any structures on the site. The Renton Plant is a large airplane manufacturing and final assembly facility, consisting of many buildings and ancillary uses. . The City of Renton boathouse is adjacent to the site Will any structures be demolished? !f so, what? Existing North Cedar river Bridge e. What is the current zoning classification of the site? UCN-2 f. What is the current comprehensive plan designation of the site? UCN-2 g. If applicable, what is the current shoreline master program designation of the site? ENVIRONMENTAL CHECKLIST 10 1 1219/2012 The Cedar River and Lake Washington are shorelines of the state and subject to the Shoreline Management Act. The City's Shoreline Master Program (SMP) designates the project area as Shoreline High Intensity and it is in Cedar River Reach A and Lake Washington reaches I and J. h. Has any part of the site been classified as an "environmentally sensitive" area? If so, specify. Cedar River, Lake Washington i. Approximately how many people would reside or work in the completed project? Varies, j. Approximately how many people would the completed project displace? None k. Proposed measures to avoid or reduce displacement impacts, if any: None I. Proposed measures to ensure the proposal are compatible with existing and projected land uses and plans, if any: New bridge is for new aircraft crossing and compatible with current for the site 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 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? ENVIRONMENTAL CHECKLIST 11 12,1912012 Approx. 3 ft above the bank, Steel and concrete. b. What views in the immediate vicinity would be altered or obstructed? None c. Proposed measures to reduce or control aesthetic impacts, if any. None 11. Light and glare a. What type of light or glare will the proposal produce? What time of day would it mainly occur? E None 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 12. Recreation a. What designated and informal recreational opportunities are in the immediate vicinity? The Cedar River shoreline trail and park are within the general area of the Renton Site. Kayak club, Renton City Boathouse b. Would the proposed project displace any existing recreational uses? If so, describe. Temporarily rerouting of watercraft during certain times- of construction. No recreation uses will be displaced permanently by the project. The reduction in overwater coverage and piles will make more of the area available to recreational users of the river ENVIRONMENTAL CHECKLIST 12 1 12/1912042 b. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any: Contractor to provide signs, control measures to recreational users Boeing will notify Renton on possible river are closures. 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. Not known. An historical inventory has been conducted by an archaeologist of the existing bridge that is to be demolished. No structures of historical significance have been identified on the project site. b. Generally describe any landmarks or evidence of historic, archaeological, scientific, or cultural importance known to be on or next to the site. None have been identified on the project site. c. Proposed measures to reduce or control impacts, if any: If artifacts are uncovered, work in that area will be halted pending notification and response from appropriate agencies. 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 has access to North 6"' Street and Logan Avenue North. b. is site currently served by public transit? If not, what is the approximate distance to the nearest transit stop? Yes Metro. 150 yards c. How many parking spaces would the completed project have? How many would the project eliminate? NA 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 ENVIRONMENTAL CHECKLIST 13 1 12119/2012 e. Will the project use (or occur in the immediate vicinity of) water, rail, or air transportation? !f so, generally describe. Yes, Renton Municipal Airport, Rail spur f. How many vehicular trips per day would be generated by the completed project? if known, indicate when peak volumes would occur. None g. Proposed measures to reduce or control transportation impacts, if any: None 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)? ff so, generally describe. None is anticipated. b. Proposed measures to reduce or control direct impacts on public services, if any. None 16. Utilities Cifcl c l�'ii tly avai the sill = elecfrk natural ga vat fuse rn fele sanitary s er, 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. Electrical power for construction equipment and lighting for bridge. 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 ak i decision. Signature: Mark D. Clement ENVIRONMENTAL CHECKLIST 14 1 1 vi 9rzals Date Submitted:14 j T -, J z ENVIRONMENTAL CHECKLIST 15 1 1211 9/2 01 2 V BergerABAM Memorandum Date: 4 October 2012 1301 Filth Avenue, Suite 1200, Seattle. Washington 48101-2677 206/351-56{DO - 2061357-5601 Fax • wvlrw.abam-com Subject: North Boeing Bridge Replacement Project — Stormwater Treatment Exemption From: The Boeing Company To: City of Renton Route to: Project File INTRODUCTION The Boeing Company is proposing to replace the existing North Boeing Bridge. The North Boeing Bridge Replacement project will provide a new bridge to move the future 737 Max commercial airliner from the Boeing manufacturing plant to the Renton Municipal Airport. The project is located at the confluence of the Cedar River and Lake Washington in the City of Renton, Washington (see Figure 1, Vicinity Map). c jI{I f `• i :— 1 h rl� I� I�• �, S l lBlh 51 «f N 4th St. '� 5132ndSt is 3 Figure 1: Vicinity Map NE*�St NE 24th St S l lBlh 51 «f N 4th St. '� 5132ndSt is 3 Figure 1: Vicinity Map North Boeing Bridge Replacement Project — Stormwater Treatment Exemption 4 October 2012 Page 2 EXISTING CONDITIONS The existing bridge is a 32 -foot wide concrete slab on concrete filled pipe piles. The majority of the stormwater from the existing bridge currently sheet flows north to Lake Washington. A small portion of the stormwater runoff from the southwest corner of the bridge currently sheet flows to a landscaped area west of the project site. This runoff enters an existing drainage structure which then discharges into the Cedar River through a 6 -inch diameter pipe. The stormwater runoff from the paved area immediately east of the bridge is collected by slot drains and conveyed to a treatment system on the Boeing property. After the runoff is treated, it is discharged into the Cedar River through an existing 30 -inch diameter pipe. PROPOSED CONDTIONS The proposed North Boeing Bridge project will remove the existing 32 -foot wide bridge and construct a wider 50 -foot bridge structure to span the Cedar River. The proposed bridge is a steel plate girder and will be supported on drilled shafts. The existing aprons on each side of the bridge will be removed, resulting in the removal of approximately 7,500 square feet of impervious surface area. DRAINAGE REQUIREMENTS The North Boeing Bridge Replacement project has approximately 19,200 square feet of new plus replaced impervious surfaces; therefore, it triggers a "Full Drainage Review". Per strict interpretation of. the KCSWDM, the proposed project will be required to comply with Core Requirement Nos. 1 through 8 and Special Requirements Nos. 1 through 5. Core Requirement No. 3 - Flow Control Per the KCSWDM, the project location is adjacent to two major receiving waters. These are the Cedar River, downstream of Taylor Creek confluence; and Lake Washington. Therefore, this project is exempt from the flow control facility requirement. Core Requirement No. S - Water Quality Per the KCSWDM, the area -specific water quality for the site is the "basic" water quality. DISCUSSION The basic water quality requirement is to treat pollution generating impervious surfaces and to remove suspended solids and metals from stormwater runoff before discharging the runoff into its natural discharge location. The proposed bridge will add approximately 1,400 square feet of new impervious surface. Removing the existing aprons south of the bridge will remove approximately 7,500 square feet of existing impervious surface. In addition, 17,805 square feet of existing impervious surface 1b North Boeing Bridge Replacement Project — Stormwater Treatment Exemption 4 October 2012 Page 3 will be replaced. Overall, there will be a net reduction of 6,100 square feet of impervious surface (see Figure 2, Impervious Areas). The proposed bridge will be located on the City of Renton property, which is ]eased by Boeing. Access to the proposed bridge is restricted to only Boeing and the City of Renton personnel. Boeing's access is restricted by two gates that are controlled by Boeing. Boeing transports commercial aircraft across the bridge from the manufacturing plant to the Renton Municipal Airport about once a day. The commercial aircraft are transported without fuel. The towing vehicle (tug) is the only vehicle that uses the bridge that contains fuel. The limited usage of the bridge will reduce the potential for pollutants to accumulate on the impervious surface and the need for basic water quality treatment. The new bridge profile would divide stormwater to the east and west of the Cedar River. Bridge barriers and curbs will prevent drainage directly into Lake Washington. On the west side of the bridge, stormwater would be directed to the landscaped area south west of the bridge. On the east side of the bridge the stormwater would be directed to the existing drainage structure. Due to the reduction in the overall impervious surface, low potential for pollution generation on the impervious surfaces, restricted bridge access, and construction impacts to the Renton Municipal Airport; Boeing is requesting an exemption from the water quality requirement. A 5 N =m Mw s2 _c. z 2U�| w22! 0 C En � \ § % \�� j\ ) t§® �}\ ; : ƒ§} ))) � \\\ jjj } !!& 8/ƒG 27!` §!!! §jjj !/0} §} A 5 N =m Mw s2 _c. z 2U�| w22! 0 C En � \ § % Billing Invoice EG000020" Job or PO #: Boeing #96327 BILLING CONTACT Mark Clement The Boeing Company 737 Logan Ave N Renton, WA 98057-2039 Department: CED - Development Engineering AR: Eden Invoice: Phone: () - REFERENCE NUMBER FEE NAME Amount Due LUA12-000303 PLAN - Environmental Review $1,000.00 000.000000.007.345.61.00.007 PLAN - Shoreline Substantial Dev Permits $2,000.00 000.000000.007.345.81.00.016 Technology Fee $90.00 503.000000.004.322.10.00.011 SUBTOTAL j $3,090.00 TOTAL $3,090.00 Created On: 12/26/2012 10.21:21AM Prepared By: Holly Powers 425-430-7266 Page 1 of 1 City of - s Department: CED - Development Engineering AR: Eden Invoice: Phone: () - REFERENCE NUMBER FEE NAME Amount Due LUA12-000303 PLAN - Environmental Review $1,000.00 000.000000.007.345.61.00.007 PLAN - Shoreline Substantial Dev Permits $2,000.00 000.000000.007.345.81.00.016 Technology Fee $90.00 503.000000.004.322.10.00.011 SUBTOTAL j $3,090.00 TOTAL $3,090.00 Created On: 12/26/2012 10.21:21AM Prepared By: Holly Powers 425-430-7266 Page 1 of 1