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HomeMy WebLinkAboutC_ERC_Applicant_Letter_180622.pdf June 22, 2018 Mark Clement The Boeing Company PO BOX 3707 MC 96-01 Seattle, WA 98124 SUBJECT: ENVIRONMENTAL (SEPA) THRESHOLD DETERMINATION Boeing Mitigation Hanger, LUA18-000293, 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 Non- 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 July 6, 2018, 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 information regarding the appeal process may be obtained from the City Clerk’s Office, (425) 430-6510. If the Environmental Determination is appealed, a public hearing date will be set and all parties not ified. If you have any further questions, please call me at (425) 430-7219. For the Environmental Review Committee, Alex Morganroth Associate Planner DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT SIGNATURES: Gregg Zimmerman, Administrator Public Works Department Date Rick M. Marshall, Administrator Renton Regional Fire Authority Date Kelly Beymer, Administrator Community Services Department Date C.E. Vincent, Administrator Department of Community & Economic Development Date ENVIRONMENTAL (SEPA) DETERMINATION OF NON-SIGNIFICANCE - MITIGATED (DNS-M) PROJECT NUMBER: LUA18-000293, ECF APPLICANT: Mark Clement, PO Box 3707, MC 96-01, Seattle, WA 98124 PROJECT NAME: Boeing Mitigation Hangar PROJECT DESCRIPTION: The applicant is requesting Environmental (SEPA) Review for the construction of a 58,474 square foot hangar at the Boeing plant site. The subject property (APN 0723059001) is to the east of the Ce dar River along the southern shore of Lake Washington. The site, home to the Boeing 737 plant and associated support buildings, is located in the Urban Center (UC) zone and has a Commercial Mixed Use designation on the Comprehensive Land Use Map. The proposed hangar would be used as an extension of the final assembly building (4-81-82). The hangar would have space for two un-fueled 737 aircrafts to undergo troubleshooting of problems that may arise during final inspections. The proposed location of the hangar is near the northwest corner of the assembly building approximately 215 feet from the Lake Washington Ordinary High Water Mark (OHWM) and is outside of the Shoreline Jurisdiction of Lake Washington, Reach I, designated as Shoreline High Intensity. A High Seismic Hazard is mapped on the project site. No change in access to the site is proposed, but internal roads and parking may be affected. The applicant has not proposed any impervious surface increase, tree removal, or vegetation removal as a part of the project. The applicant submitted a Drainage Report, Geotechnical Report, and Parking/Traffic Analysis with the application. PROJECT LOCATION: 737 Logan Ave N, Renton, WA 98054 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 June 22, 2018. 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: June 22, 2018 DATE OF DECISION: June 18, 2018 DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE 6/18/2018 | 4:52 PM PDT 6/18/2018 | 3:09 PM PDT 6/18/2018 | 3:23 PM PDT 6/18/2018 | 3:13 PM PDT July 6, 2018. Appeals DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT ERC REPORT LUA18-000293 ENVIRONMENTAL REVIEW COMMITTEE REPORT ERC MEETING DATE: June 18, 2018 Project Name: Boeing Mitigation Hangar Project Number: LUA18-000293, ECF Project Manager: Alex Morganroth, Associate Planner Owner: The Boeing Company, 737 Logan Ave N, Renton, WA 98055 Applicant/Contact: Mark Clement, PO Box 3707, MC 96-01, Seattle, WA 98124 Project Location: 737 Logan Ave N, Renton, WA 98054 Project Summary: The applicant is requesting Environmental (SEPA) Review for the construction of a 58,474 square foot hangar at the Boeing plant site. The subject property (APN 0723059001) is to the east of the Cedar River along the southern shore of Lake Washington. The site, home to the Boeing 737 plant and associated support buildings, is located in the Urban Center (UC) zone and has a Commercial Mixed Use designation on the Comprehensive Land Use Map. The proposed hangar would be used as an extension of the final assembly building (4-81-82). The hangar would have space for two un-fueled 737 aircrafts to undergo troubleshooting of problems that may arise during final inspections. The proposed location of the hangar is near the northwest corner of the assembly building approximately 215 feet from the Lake Washington Ordinary High Water Mark (OHWM) and is outside of the Shoreline Jurisdiction of Lake Washington, Reach I, designated as Shoreline High Intensity. A High Seismic Hazard is mapped on the project site. No change in access to the site is proposed, but internal roads and parking may be affected. The applicant has not proposed any impervious surface increase, tree removal, or vegetation removal as a part of the project. The applicant submitted a Drainage Report, Geotechnical Report, and Parking/Traffic Analysis with the application. Site Area: 6,676,701 SF (153.3 acres) STAFF RECOMMENDATION: Staff Recommends that the Environmental Review Committee issue a Determination of Non-Significance – Mitigated (DNS-M). City of Renton Department of Community & Economic Development Environmental Review Committee Report BOEING MIGITATION HANGAR LUA18-000293, ECF Report of June 18, 2018 Page 2 of 5 ERC REPORT LUA18-000293 Project Location Map PART ONE: PROJECT DESCRIPTION / BACKGROUND The applicant is requesting Environmental (SEPA) Review for the construction of a 58,747 square foot hangar on the north side of the Boeing plant site. The maximum height of the proposed hangar would be 88 feet above grade. The hangar would consist of a high bay located in the northern portion of the building and a low bay located in the southern portion of the building. The high bay would be used to house two unfueled 737 aircraft as they undergo troubleshooting for issues that arise during the final inspection process. The low bay would include equipment storage areas, a service and storage area, and lockers. Existing utilities within the footprint of the proposed building would be relocated. The project requires the relocation of elements of the existing storm water conveyance system including a combined bypass, an oil/water separator, and new modular wet water quality treatment vault. No new impervious surface would be added to the site as a result of the project. See boxed area in more detail below Proposed new hangar City of Renton Department of Community & Economic Development Environmental Review Committee Report BOEING MIGITATION HANGAR LUA18-000293, ECF Report of June 18, 2018 Page 3 of 5 ERC REPORT LUA18-000293 PART TWO: ENVIRONMENTAL REVIEW In compliance with RCW 43.21C.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. B. Mitigation Measures 1. The applicant shall comply with the recommendations of the geotechnical report prepared by S&EE, dated April 23, 2018, or an updated report submitted at a later date. 2. The applicant shall submit documentation to the Current Planning Project Manager showing no net increase in artificial light levels at the OHWM as a result of the project. The documentation shall be submitted prior to Civil Construction Permit application submittal. C. Exhibits Exhibit 1 Environmental Review Committee Report Exhibit 2 Neighborhood Detail Map Exhibit 3 Site Plan Exhibit 4 Architectural Elevations Exhibit 5 Traffic Plan Exhibit 6 Construction Mitigation Description Exhibit 7 Geotechnical Report prepared by S&EE (dated April 23, 2018) Exhibit 8 Technical Information Report prepared by BergerABAM (dated April 2018) Exhibit 9 Muckleshoot Indian Tribe Comment Letter (via email) Exhibit 10 Response to Muckleshoot Indian Tribe (via email) Exhibit 11 Advisory notes to Applicant Exhibit 12 Boeing Lighting Response #1 (via email) Exhibit 13 Muckleshoot Indian Tribe Comment Letter #2 (via email) Exhibit 14 Boeing Lighting Response #2 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 subject site is located in an area with a known seismic hazard. As such the applicant submitted a Geotechnical Report, prepared by S&EE, dated April 23, 2018 (Exhibit 7). The analysis in the report primarily focused on the area near the proposed footprint of the mitigation hangar. S&EE relied on the soil characteristics observed in prior geotechnical reports prepared for Boeing, as well as new laboratory testing of a soil boring collected near the proposed structure. Similar to the results of previous borings across the site, the new boring found fill approximately five to seven feet (5’-7’) in thickness primarily consisting of loose sand with gravel. Native alluvial soils with varying degrees of density then extend approximately 100 feet below the fill. Older alluvial soils consisting of medium dense to dense sand, silt and silty clay have been found up to a depth of approximately 160 feet. According to the City of Renton Critical Areas Maps, the project site is located in a seismic hazard area. The submitted geotechnical report concluded that the project site is located in an area of high liquefaction potential due the close proximity to the Seattle Fault. Due to the high potential for liquefaction near the project area during an earthquake, the report finds the use of a conventional spread concrete footings to be City of Renton Department of Community & Economic Development Environmental Review Committee Report BOEING MIGITATION HANGAR LUA18-000293, ECF Report of June 18, 2018 Page 4 of 5 ERC REPORT LUA18-000293 infeasible for the proposed structure. Instead, the report recommends the use of 20-inch diameter Augercast piles drilled to a depth of approximately 75 feet bgs (below ground surface). S&EE recommends that the Augercast piles be installed by an experienced piling contractor due to the various quality control measures necessary and the complexity of the installation process. S&EE estimates that due to the characteristics of the soil and ground water table during testing, approximately four to six inches (4”-6”) of settlement is possible under the proposed floor load. The report recommends preloading the slab area to pre-induce the settlement prior to construction. In addition, the report recommends the use of reinforced slab-on-grade to further reduce the potential for structural problems due to liquefaction during a seismic event. Due to the recommendations provided in the geotechnical report, staff recommends as a mitigation measure that the applicant comply with the recommendation in the provided report or an updated report submitted with the building permit. The geotechnical report would be required to be submitted with the building permit application for the construction of the building and compliance with the recommendations would be reviewed at that time. The applicant has indicated the project would result in approximately 63,000 square feet of replaced impervious area. The project would not increase the impervious coverage on-site overall. Mitigation Measures: The applicant shall comply with the recommendations of the geotechnical report prepared by S&EE, dated April 23, 2018, or an updated report submitted at a later date. Nexus: SEPA Environmental Review, RMC 4-4-060 Grading, Excavation and Mining Regulations 2. Air Impacts: It is anticipated that some temporary air quality impacts could be associated with site work and building construction required to complete the proposed project at this site. Project development impacts during construction activities may include dust as a result of concrete replacement and utility work, as well as exhaust from construction vehicles, equipment and/or machinery. These emissions would be temporary and are anticipated to rapidly dissipate. Dust control would be mitigated through the use of temporary erosion control measures, watering or other best management practices as identified in the construction mitigation memo provided by the applicant (see Exhibit 6). No further site specific mitigation is recommended for the identified impacts from typical vehicle and construction exhaust. Mitigation Measures: No further mitigation recommended. Nexus: N/A 3. Water a. Storm Water Impacts: The applicant submitted a Preliminary Drainage Plan and Technical Information Report (TIR) prepared by Berger ABAM, dated April 26, 2018 (Exhibit 8). The project contains greater than 2,000 square feet of replaced impervious surface and therefore the development is subject to Full Drainage Review in accordance with the 2017 Renton Surface Water Design Manual (RSWDM). Based on the City of Renton’s flow control map, the site falls within the Peak Rate Flow Control Standard area matching Existing Site Conditions and is within the Lake Washington and Cedar River Drainage Basin. All nine core requirements and the six special requirements have been discussed in the TIR. The project site is located within the Lake Washington and Cedar River drainage basin. The flowpath from the project site discharge point is less than a half mile to the 100-year floodplain of Lake Washington; therefore, the project qualifies for the direct discharge exemption in accordance with Section 1.2.3.1 of the 2017 RSWDM and must adhere to all requirements thereof. The project is classified as a redevelopment project in accordance with the definition of redevelopment project provided in the RSWDM. As a redevelopment project, the project is exempt from Core Requirement City of Renton Department of Community & Economic Development Environmental Review Committee Report BOEING MIGITATION HANGAR LUA18-000293, ECF Report of June 18, 2018 Page 5 of 5 ERC REPORT LUA18-000293 #8 – Water Quality as it meets the exemption criteria outlined in Section 1.2.8 of the RSWDM - #3 Cost Exemption for Parcel Redevelopment Projects. However, the applicant has elected to provide enhanced water quality treatment prior to discharge in order to provide a benefit to Lake Washington and its aquatic habitat. Project water quality treatment will consist of surface water conveyance to oil/water separator vaults, which will direct surface water to several Linear Modular Wetland systems prior to discharge to the outfalls in Lake Washington. A Construction Stormwater General Permit from Department of Ecology will be required if grading and clearing of the site exceeds one acre. A Stormwater Pollution Prevention Plan (SWPPP) is required for this site. 4. Wildlife Impacts: According to the Environmental Checklist submitted by the applicant, the project is located in an area of threatened species under the Endangered Species Act, the Puget Sound Chinook salmon and Puget Sound steelhead trout. The proposed structure is located approximately 215 feet away from the Lake Washington OHWM and would not include any in-water work or work within the shoreline buffer. Comments submitted by Karen Walters, the Watersheds and Land Use Team Leader for the Muckleshoot Indian Tribe, expressed concern over potential light impingement created by artificial lighting associated with the new building (see Exhibit 9). Aquatic light impingement has the potential to impact juvenile salmon that use the nearshore habitat adjacent to Apron R. The applicant indicated in the Environmental Checklist that minimal exterior lighting on the structure would be installed as part of the project, but did not include any details on light type, intensity, or coverage. In order to better determine the impact of any new artificial lighting sources on the nearshore habitat, Staff recommends as a mitigation measure that the applicant submit documentation showing no net increase in artificial light levels at the OHWM as a result of the proposed project. The documentation should be submitted to the Current Planning Project Manager for review prior to Civil Construction Permit application submittal. Mitigation Measures: 1. The applicant shall submit documentation to the Current Planning Project Manager showing no net increase in artificial light levels at the OHWM as a result of the project. The documentation shall be submitted prior to Civil Construction Permit application submittal. Nexus: SEPA Environmental Review, RMC 4-3-050 Critical Areas Regulations 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 listed under Exhibit 15 “Plan Review Comments 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 July 6, 2018. 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. CITY OF RENTON DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT STAFF REPORT TO THE ENVIRONMENTAL REVIEW COMMITTEE EXHIBITS Project Name: Boeing Mitigation Hangar Project Number: LUA18-000293, ECF Date of Meeting June 18, 2018 Staff Contact Alex Morganroth Associate Planner Project Contact/Applicant Mark Clement, PO Box 3707, MC 96-01, Seattle, WA 98124 Project Location 737 Logan Ave N, Renton, WA 98054 The following exhibits are included with the ERC Report: Exhibit 1: Environmental Review Committee (ERC) Report Exhibit 2: Neighborhood Detail Map Exhibit 3: Site Plan Exhibit 4: Architectural Elevations Exhibit 5: Traffic Plan Exhibit 6: Construction Mitigation Description Exhibit 7: Geotechnical Report prepared by S&EE (dated April 23, 2018) Exhibit 8: Technical Information Report prepared by BergerABAM (dated April 2018) Exhibit 9: Muckleshoot Indian Tribe Comment Letter (via email) Exhibit 10: Response to Muckleshoot Indian Tribe (via email) Exhibit 11: Advisory notes to Applicant Exhibit 12: Boeing Lighting Response #1 (via email) Exhibit 13: Muckleshoot Indian Tribe Comment Letter #2 (via email) Exhibit 14: Boeing Lighting Response #2 RECEIVED 05/02/2018 amorganroth PLANNING DIVISION Exhibit 2 DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE RECEIVED 05/02/2018 amorganroth PLANNING DIVISION Exhibit 3 DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE LEVEL 10' - 0"LEVEL 328' - 0"BOTTOM OF RF84' - 4"EEDDCCBBAALEVEL 213' - 7"TOP OF RF87' - 10"ALEVEL 3 RF51' - 6"6' - 4"2' - 10"12' - 6"40' - 6"43' - 0"43' - 8"43' - 0"2' - 0 3/4"1A1101A11054' - 0"TYP. TRANSLUCENT KALWALL OR SIMILAR @ BOTH NORTH & SOUTH ELEVATIONS12' - 9 1/8"11' - 4 3/4"12' - 0"LEVEL 10' - 0"LEVEL 328' - 0"BOTTOM OF RF84' - 4"EEDDCCBBAALEVEL 213' - 7"TOP OF RF87' - 10"ALEVEL 3 RF51' - 6"43' - 0"43' - 8"43' - 0"52' - 6"22' - 0"22' - 0"22' - 0"2' - 4"14' - 10"35' - 0"22' - 8"22' - 8"22' - 8"3' - 7"3' - 7"3' - 7"1' - 11 1/4"2' - 0 3/4"10' - 0"8' - 0"1A1101A1106' - 4"11' - 4 3/4"12' - 3"54' - 0"SYMREVISIONBYAPPROVEDDATESYMREVISIONBYAPPROVEDDATEACCEPTABILITYTHIS DESIGN AND/ORSPECIFICATION IS APPROVEDAPPROVED BYDEPT.DATEDRAWNDATECHECKEDENGINEERCHECKEDAPPROVEDAPPROVEDSUBTITLETITLECURRENT REVISIONSYMBOLDATESHEETJOB NO.DWG NO.COMP NO.4/23/2018 1:59:53 PM- MITIGATION HANGARC180242 AS/RAI EC/RAI 04.26.18Author 04.26.18Checker 04.26.18Designer 04.26.18COMPOSITE BUILDING ELEVATIONSMITIGATION HANGARRENTON, WABUILDING 04-8701A04.26.18A60C18024204-87-A60Author:ARCHITECTURAL MASTER08'16' 32' 48'1/16" = 1'-0"XLEGENDGENERAL NOTESREFERENCE DRAWINGSCONSTRUCTION NOTESxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxXSCALE: 1/16" = 1'-0"A602NORTH ELEVATIONSCALE: 1/16" = 1'-0"A601SOUTH ELEVATION4-87 MITIGATION HANGARRECEIVED05/02/2018amorganrothPLANNING DIVISIONDocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE LEVEL 10' - 0"3.544.555.53BOTTOM OF RF84' - 4"LEVEL 213' - 7"TOP OF RF87' - 10"AA110AA1105.86.3LEVEL 3 RF51' - 6"51' - 6"87' - 10"128' - 0"128' - 0"45' - 6"50' - 0"50' - 0"50' - 0"50' - 0"50' - 0"29' - 6"19' - 3"9' - 11 3/16"36' - 6"7' - 2 1/2"56' - 10"8' - 9 13/16"55' - 0"MEGADOOR LOCATIONMEGADOOR LOCATION2.8SYMREVISIONBYAPPROVEDDATESYMREVISIONBYAPPROVEDDATEACCEPTABILITYTHIS DESIGN AND/ORSPECIFICATION IS APPROVEDAPPROVED BYDEPT.DATEDRAWNDATECHECKEDENGINEERCHECKEDAPPROVEDAPPROVEDSUBTITLETITLECURRENT REVISIONSYMBOLDATESHEETJOB NO.DWG NO.COMP NO.4/23/2018 1:59:55 PM- MITIGATION HANGARC180242 AS/RAI EC/RAI 04.26.18Author 04/26/18Checker 04/26/18Designer 04/26/18COMPOSITE BUILDING ELEVATIONSMITIGATION HANGARRENTON, WABUILDING 04-8701A04/26/18A61C18024204-87-A61Author:ARCHITECTURAL MASTER08'16' 32' 48'1/16" = 1'-0"LEGENDGENERAL NOTESREFERENCE DRAWINGSCONSTRUCTION NOTESxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxSCALE: 1/16" = 1'-0"A611WEST ELEVATION4-87 MITIGATION HANGARDocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE LEVEL 10' - 0"LEVEL 328' - 0"BOTTOM OF RF84' - 4"EEDDCCBBAALEVEL 213' - 7"TOP OF RF87' - 10"ALEVEL 3 RF51' - 6"1A1101A110LEVEL 10' - 0"3.544.555.53LEVEL 328' - 0"BOTTOM OF RF84' - 4"LEVEL 213' - 7"TOP OF RF87' - 10"AA110AA1105.86.3LEVEL 3 RF51' - 6"2.8SYMREVISIONBYAPPROVEDDATESYMREVISIONBYAPPROVEDDATEACCEPTABILITYTHIS DESIGN AND/ORSPECIFICATION IS APPROVEDAPPROVED BYDEPT.DATEDRAWNDATECHECKEDENGINEERCHECKEDAPPROVEDAPPROVEDSUBTITLETITLECURRENT REVISIONSYMBOLDATESHEETJOB NO.DWG NO.COMP NO.4/23/2018 1:59:56 PM- MITIGATION HANGARC180242 AS/RAI EC/RAI 04.26.18Author 04.26.18Checker 04.26.18Designer 04.26.18BUILDING SECTIONSMITIGATION HANGARRENTON, WABUILDING 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REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PR O TECT ION IS R EQU IRED IN T H IS AR EAPCA 70EYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTE C T ION IS REQ U IR E D IN THIS AREA EYE PR O TECT ION IS R EQU IRED IN T H IS AR EA EYE PROTE C T ION IS R EQU IRED IN TH IS AREAEYE PR OTECT ION IS REQ U IR E D IN TH IS AREA EYE PROTE C T IO N IS R EQU IRED IN THIS AREA Day 9BICYCLEPARKING RENTON SITE CT1 WB-67 NORTH BOUND DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE EYE PROTE C T IO N IS REQU IRED IN TH IS ARE AEYE PRO T ECT ION IS REQU IRED IN TH IS ARE A EYE PROTECTION IS REQUIRED IN THIS AREA RENTON SITE CT2 WB-67 NORTH BOUND DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE ZONE KEEP CLEAR ZONE KEEP CLEAR EYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PRO TECT ION IS REQU I R ED IN T H IS AR EAPCA 70EYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTE C T IO N IS REQU IRED IN TH IS ARE A EYE PRO TECT ION IS REQU I R ED IN T H IS AR EAEYE P ROTEC T ION IS R EQU IRED IN THIS AREAEYE PRO T ECT ION IS REQ U IR E D IN T H IS AR EA EYE PROTE C T IO N IS R EQU IRED IN TH IS AREA Day 9BICYCLEPARKING RENTON SITE CT1 WB-67 SOUTH BOUND DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE EYE PROTE C T IO N IS REQU IRED IN TH IS ARE AEYE PRO T ECT ION IS REQU IRED IN TH IS ARE A EYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTION IS REQUIRED IN THIS AREA EYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTIONIS REQUIREDIN THIS AREAEYE PROTECTION IS REQUIRED IN THIS AREA EYE PROTECTI O N IS REQUIRED IN THIS AREA Day 5RENTON SITE CT2 WB-67 SOUTH BOUND DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE CONSTRUCTION MITIGATION DESCRIPTION Boeing Commercial Airplane Group Renton, WA 4-87 MITIGATION HANGER Proposed Construction Dates & Times: The proposed construction schedule will begin late September Construction Work Activities will be 7:00AM-5:00PM. 2nd Shift and weekend work may be required in order to accommodate Boeing production requirements. If schedule changes require 2nd shift work Boeing will follow all noise mitigation best management practices. Construction Mitigation Measures & Best Practices: All activities will begin with the implementation and installation of Best Management Practices (BMP)). These practices include: Proposed Hauling/ Transportation routes Contractors will submit hauling plan as required and will follow a city approved route. No evening hauling on city roads expected Construction. The actual Construction will be accomplished by a Construction contractor. The contractor will call for all required inspections, as well as site pre-construction meeting. The contractor will keep records of any special inspections at the construction site Storm Water Construction will start with the implementation and installation of Best Management Practices (BMP) for Temporary Erosion and Sedimentation Control (TESC) under supervision of Boeing Environmental personnel. All storm water drain inlets in and around the proposed construction operations and staging areas will be surrounded by oil absorbent padding to mitigate the potential of any hydraulic/fuel leakages emanating from construction machinery entering the watershed Snow, Ice, dirt and mud removal Contractor shall remove snow and ice to the extent necessary to perform the work. The use of calcium chloride or other chemicals will not be permitted to remove snow or ice. Contractor shall assure that vehicles are constructed, loaded, maintained and covered as necessary to prevent the deposition of dirt, mud or other debris on public roadways. Dirt mud or debris shall be removed on Exhibit 6 DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE continual basis. Any dirt, mud or debris dropped by vehicles shall be removed immediately. Dust Control Through the entire construction period the Contractor shall take all necessary steps to dust control all working area and unpaved roads. The use of calcium chloride or other chemicals will not be permitted for dust control. The Contractor will accomplish dust control by watering and sprinkling to satisfactorily settle the dust. Contractor shall comply with any requirements imposed by law to prevent fugitive dust emissions. All demolished materials and debris will be stockpiled on site to prevent dust and sedimentation from migrating onto roadways. Contractor vehicles that are transporting materials to and from the site will be required to have tires washed prior to leaving the site. This will prevent dust and sedimentation from entering nearby roadways. DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE Job No. 1801 S&EE S&EE REPORT OF GEOTECHNICAL INVESTIGATION PROPOSED MITIGATION HANGAR BOEING RENTON PLANT S&EE JOB NO. 1801 APRIL 23, 2018 (DRAFT) RECEIVED 05/02/2018 amorganroth PLANNING DIVISION Entire Document Available Upon Request DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE 26 April 2018 RECEIVED 05/02/2018 amorganroth PLANNING DIVISION Exhibit 8 Entire Document Available Upon Request DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE From: Karen Walter <KWalter@muckleshoot.nsn.us> Sent: Wednesday, May 23, 2018 3:42 PM To: Alex Morganroth Subject: RE: Boeing Mitigation Hangar, LUA18-000293; PR18-000208, Notice of Application/ODNS Attachments: WDNR-report-shuffleton-flume-monitoring-final report Jan 2018.pdf; Tabor, Celedonia, and Brown Artificial lighting in Lake Wasington research Oct 14 2010.ppt Alex, We have reviewed the Notice of Application/ODNS and the available information for the proposed new hanger (Building 4-87) at Boeing’s 737 plant site. We offer the following questions/initial comments: More information is needed regarding lighting at this new building which is approximately 250 feet from the OWHM of Lake Washington. As we have been commenting on various projects at the Renton plant site and the City’s maintenance dredging on the Cedar River, we are extremely concerned about artificial lighting and its impacts on juvenile salmon and salmon predator behaviors. This proposed new building is near the WDNR/WSDOT mitigation site on Lake Washington which has improved nearshore habitat for juvenile Chinook; however, per the attached monitoring report, lighting associated with the Boeing plant site appears to have increased to the potential detriment of Chinook salmon(see Attachments 1 and 2). The new building with additional artificial lighting could exasperate this condition. Therefore, the applicant should provide more information about proposed artificial lighting; an analysis of potential impacts from this lighting and light intensity that can reach the nearshore of Lake Washington; and how the applicant will be avoiding, minimizing, and mitigation for artificial lighting impacts. We appreciate the opportunity to review this proposal and look forward to the City of Renton/Boeing’s responses. If you have questions, please let me know. Thank you, Karen Walter Watersheds and Land Use Team Leader Muckleshoot Indian Tribe Fisheries Division Habitat Program 39015-A 172nd Ave SE Auburn, WA 98092 253-876-3116 From: Kyle Wunderlin [mailto:KWunderlin@Rentonwa.gov] Sent: Wednesday, May 09, 2018 11:28 AM To: Karen Walter; Laura Murphy; 'separegister@ecy.wa.gov'; 'sepaunit@ecy.wa.gov'; 'misty.blair@ecy.wa.gov'; 'Sepadesk@dfw.wa.gov'; 'sepacenter@dnr.wa.gov'; 'Minnie.Dhaliwal@TukwilaWA.gov'; 'Gary.Kriedt@kingcounty.gov'; 'steveo@newcastlewa.gov'; 'andy.swayne@pse.com' Cc: Alex Morganroth Subject: NOA Revision: PR18-000208 Boeing Mitigation Hangar, LUA18-000293 Hello, The Notice of Application has been updated for the following project: PR18-000208 Boeing Mitigation Hangar, LUA18-000293. Please see attached. Exhibit 9 DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE As the project progresses, more information will be available by request and through our online Public Notice of Land Use Applications Map. Thank you, Kyle Wunderlin, Planning Technician City of Renton | CED | Planning Division 1055 South Grady Way | 6th Floor | Renton, WA 98057 Phone: (425) 430-6583 | Fax: (425) 430-7300 | kwunderlin@rentonwa.gov DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE From: Alex Morganroth Sent: Thursday, May 24, 2018 12:27 PM To: 'Karen Walter' Subject: RE: Boeing Mitigation Hangar, LUA18-000293; PR18-000208, Notice of Application/ODNS Hi Karen, Thank you for your comments. I’ll get these into the record and will reach out to Boeing with regards to your concerns. This may result in either the project going on hold until they address the issue or the Environmental Review Committee adding mitigation measures to the project. Thank you, Alex Morganroth, Associate Planner City of Renton | CED | Planning Division 1055 S Grady Way | 6th Floor | Renton, WA 98057 (425) 430-7219 | amorganroth@rentonwa.gov From: Karen Walter [mailto:KWalter@muckleshoot.nsn.us] Sent: Wednesday, May 23, 2018 3:42 PM To: Alex Morganroth <AMorganroth@Rentonwa.gov> Subject: RE: Boeing Mitigation Hangar, LUA18-000293; PR18-000208, Notice of Application/ODNS Alex, We have reviewed the Notice of Application/ODNS and the available information for the proposed new hanger (Building 4-87) at Boeing’s 737 plant site. We offer the following questions/initial comments: More information is needed regarding lighting at this new building which is approximately 250 feet from the OWHM of Lake Washington. As we have been commenting on various projects at the Renton plant site and the City’s maintenance dredging on the Cedar River, we are extremely concerned about artificial lighting and its impacts on juvenile salmon and salmon predator behaviors. This proposed new building is near the WDNR/WSDOT mitigation site on Lake Washington which has improved nearshore habitat for juvenile Chinook; however, per the attached monitoring report, lighting associated with the Boeing plant site appears to have increased to the potential detriment of Chinook salmon(see Attachments 1 and 2). The new building with additional artificial lighting could exasperate this condition. Therefore, the applicant should provide more information about proposed artificial lighting; an analysis of potential impacts from this lighting and light intensity that can reach the nearshore of Lake Washington; and how the applicant will be avoiding, minimizing, and mitigation for artificial lighting impacts. We appreciate the opportunity to review this proposal and look forward to the City of Renton/Boeing’s responses. If you have questions, please let me know. Thank you, Karen Walter Watersheds and Land Use Team Leader Muckleshoot Indian Tribe Fisheries Division Exhibit 10 DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE Habitat Program 39015-A 172nd Ave SE Auburn, WA 98092 253-876-3116 From: Kyle Wunderlin [mailto:KWunderlin@Rentonwa.gov] Sent: Wednesday, May 09, 2018 11:28 AM To: Karen Walter; Laura Murphy; 'separegister@ecy.wa.gov'; 'sepaunit@ecy.wa.gov'; 'misty.blair@ecy.wa.gov'; 'Sepadesk@dfw.wa.gov'; 'sepacenter@dnr.wa.gov'; 'Minnie.Dhaliwal@TukwilaWA.gov'; 'Gary.Kriedt@kingcounty.gov'; 'steveo@newcastlewa.gov'; 'andy.swayne@pse.com' Cc: Alex Morganroth Subject: NOA Revision: PR18-000208 Boeing Mitigation Hangar, LUA18-000293 Hello, The Notice of Application has been updated for the following project: PR18-000208 Boeing Mitigation Hangar, LUA18-000293. Please see attached. As the project progresses, more information will be available by request and through our online Public Notice of Land Use Applications Map. Thank you, Kyle Wunderlin, Planning Technician City of Renton | CED | Planning Division 1055 South Grady Way | 6th Floor | Renton, WA 98057 Phone: (425) 430-6583 | Fax: (425) 430-7300 | kwunderlin@rentonwa.gov DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT Page 1 of 5 LUA18-000293 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 action. Planning: (Contact: Alex Morganroth, 425-430-7219, amorganroth@rentonwa.gov) 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. 3. Within thirty (30) days of completion of grading work, the applicant shall hydroseed or plant an appropriate ground cover over any portion of the site that is graded or cleared of vegetation and where no further construction work will occur within ninety (90) days. Alternative measures such as mulch, sodding, or plastic covering as specified in the current King County Surface Water Management Design Manual as adopted by the City of Renton may be proposed bet ween the dates of November 1st and March 31st of each year. The Development Services Division’s approval of this work is required prior to final inspection and approval of the permit. 4. A National Permit Discharge Elimination System (NPDES) permit is required when more than one acre is being cleared. 5. The applicant may not fill, excavate, stack or store any equipment, dispose of any materials, supplies or fluids, operate any equipment, install impervious surfaces, or compact the earth in any way within the area defined by the drip line of any tree to be retained. 6. This permit is shall comply with the Bald and Golden Eagle Protection Act. The permitted is responsible for adhering to the U.S. Fish and Wildlife Service National Bald Eagle Management Guidelines (2007) and /or your U.S. Fish and Wildlife Service permit. Development Engineering: (Contact: Ann Fowler, 425-430-7382 , afowler@rentonwa.gov) 1. See Attached Development Engineering Memo dated May 22, 2018 Fire Authority: (Contact: Corey Thomas, 425-430-7024, cthomas@rentonrfa.org) 1. The required fire flow does not change with this new addition. Existing private fire hydrant looped water main system provides adequate fire flow and shall be relocated as necessary to accommodate footprint of proposed building. Fire protection water mains are not allowed by code to be run underneath a building. A minimum of one hydrant is required within 150-feet of the structure and all other additional hydrants are required within 300-feet of the structure. Maximum hydrant spacing is 300 feet on center around the building. One hydrant shall be within 50-feet of the fire department sprinkler connection. A looped water main is required to be installed around the building. Exhibit 11 DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE ADVISORY NOTES TO APPLICANT Page 2 of 5 LUA18-000293 2. Approved fire sprinkler and fire alarm systems are required throughout the building. Separate plans and permits required by the fire department. Direct outside access is required to the fire sprinkler riser room. Fully addressable and full detection is required for the fire alarm system. 3. Fire department apparatus access roadways are required within 150 -feet of all points on the building. Fire lane signage required for the on site roadway. Required turning radius are 25 -feet inside and 45- feet outside. Roadways shall be a minimum of 20-feet wide. Roadways shall support a minimum of a 30-ton vehicle and 75-psi point loading. 4. Applicant shall provide a completed Hazardous Material Inventory Statement prior to building permit issuance. Use of City of Renton form or approved equivalent is required. DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE ADVISORY NOTES TO APPLICANT Page 3 of 5 LUA18-000293 DEPARTMENT OF COMMUNITY & ECONOMIC DEVELOPMENT M E M O R A N D U M DATE: May 22, 2018 TO: Alex Morganroth, Planner FROM: Ann Fowler, Civil Plan Reviewer SUBJECT: Utility and Transportation Comments for Boeing New 4-87 Mitigation Hangar 737 Logan Ave N LUA 18-000293 I have reviewed the application for the Boeing New 4-87 Mitigation Hangar at 737 Logan Ave N (APN(‘s) 0723059001) and have the following comments: EXISTING CONDITIONS The project site is located at the northern extent of the existing Boeing Reproduction Plant, directly adjacent to the northwest corner of Building 4-81 and just south of Apron R. Aircraft staging stalls are located on the western end of the project. A two-way vehicular drive aisle and pedestrian path separates the area uses and includes a dedicated fire access lane. There is an existing employee parking area located at the southern end of the project site. Stormwater r unoff from the existing site is collected in a series of private catch basins and conveyance pipes and routed through a combined oil/water separator and water quality vault prior to discharge into the existing outfalls within Lake Washington. The existing vault is located within the proposed building footprint. CODE REQUIREMENTS WATER 1. The applicant has not proposed the addition, removal or replacement of any public water utility lines or appurtenances. However, there are numerous utilities owned by Boeing, including water lines for domestic and fire protection within the proposed redevelopment area. The Civil plans should clearly identify the impacted private water lines and hydrants and their proposed relocations. 2. Relocation of the fire line will require separate fire permits. SEWER 1. The applicant has not proposed the addition, removal or replacement of any public sewer utility lines or appurtenances. Civil plans and permit will be required if the project results in the installation of a new, replaced, or relocated wastewater main. If floor drains are required by the building department, drains are required to be connected to the sanitary sewer system. Flows shall be directed through the floor drains that are installed in accordance with the Uniform Plumbing Code to an interior or exterior oil/water separator. SURFACE WATER DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE ADVISORY NOTES TO APPLICANT Page 4 of 5 LUA18-000293 1. A geotechnical report, dated April 23, 2018, completed by Soil & Environmental Engineers, Inc. (S&EE) for the site has been provided. The submitted report describes the site is a Low Erosion Hazard area. Erosion control measures will need to be in place prior to starting grading activities on the site. Geotechnical recommendations presented need to be address within the project plans. 2. A Preliminary Drainage Plan and Technical Information Report (TIR), dated April 26, 2018, was submitted by BergerABAM with the Land Use Application. Based on the City of Renton’s flow control map, the site falls within the Peak Rate Flow Control Standard area matching Existing Site Conditions and is within the Lake Washington and Cedar River Drainage Basin. The development is subject to Full Drainage Review in accordance with the 2017 Renton Surface Water Design Manual (RSWDM). All nine core requirements and the six special requirements have been discussed in the Technical Information Report. 3. Direct Discharge Exception - The project site is located within the Lake Washington and Cedar River drainage basin and the flowpath from the project site discharge point is less than a half mile to the 100-year floodplain of Lake Washington and qualifies for the direct discharge exemption in accordance with Section 1.2.3.1 of the 2017 RSWDM and must adhere to all requirements thereof. 4. The project is classified as a redevelopment project in accordance with the definition of redevelopment project provided in the RSWDM. As a redevelopment project, the project is exempt from Core Requirement #8 – Water Quality as it meets the exemption criteria outlined in Section 1.2.8 of the RSWDM - #3 Cost Exemption for Parcel Redevelopment Projects. However, the applicant has elected to provide enhanced water quality treatment prior to discharge in order to provide a benefit to Lake Washington and its aquatic habitat. Project water quality treatment will consist of conveyance to oil/water separator vaults, which will direct surface water to several Linear Modular Wetland systems prior to discharge to the outfalls in Lake Washington. 5. The proposed oil/water separator and water quality systems shall be designed in accordance with the RSWDM that is current at the time of civil construction permit application. Separate structural plans will be required to be submitted for review and approval under a separate building permit for the detention and/or water quality vault. Special inspection from the building department is required. 6. All conveyance systems and outfalls impacted and/or created by the redevelopment project shall be analyzed in accordance with the RSWDM. 7. Appropriate on-site BMPs will be required to help mitigate the new runoff created by this development. The final drainage plan and drainage report, addressing the implementation of on-site BMPs must be submitted with the civil construction permit application. The applicant will need to re-evaluate the feasibility of utilizing basic dispersion for the target impervious surface areas that may be able to disperse into any added or existing landscaping areas. 8. A Construction Stormwater General Permit from Department of Ecology will be required if grading and clearing of the site exceeds one acre. A Stormwater Pollution Prevention Plan (SWPPP) is required for this site. 9. Surface water system development fee is $0.687 per square foot of new impervious surface, but not less than $1,718.00. This is payable prior to issuance of the construction permit. 10. The applicant shall provide a resolution to the ponding of water on top of the pavement to the west of the project site as a maintenance activity prior to or as part of the civil construction permit approval for the Boeing Mitigation Hangar Project. TRANSPORTATION 1. The proposed redevelopment does not front any public right-of-way. 2. On-site improvements include restriping of the parking lot area to provide accessible parking stalls and restriping of the existing pavement surfaces to redirect traffic flow, including a designated fire lane. All fire lanes shall be designed and constructed per Renton Fire Authority standards with all required signage installed. 3. If removal and/or grading of the parking lot or drive aisles is required or proposed, the replaced impervious surfaces may trigger water quality mitigation and will need to be reviewed and addressed as part of the final drainage report. GENERAL COMMENTS 1. Maximum exposed retaining wall height is outlined in RMC 4-4-040 – Fences, Hedges and Retaining Walls. DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE ADVISORY NOTES TO APPLICANT Page 5 of 5 LUA18-000293 2. Adequate separation between utilities as well as other features shall be provided in accordance with code requirements. a. 7-ft minimum horizontal and 1-ft vertical separation between storm and other utilities is required with the exception of water lines which require 10-ft horizontal and 1.5-ft vertical. b. The stormwater line should be minimum 5 feet away from any other structure or wall or building. c. Trench of any utility should not be in the zone of influence of the retaining wall or of the building. 3. All civil construction permits for utility and street improvements will require separate plan submittals. All utility plans shall confirm to the Renton Drafting Standards. A licensed Civil Engineer shall prepare the civil plans. Please visit the Development Engineering Forms page for the most up-to-date plan submittal requirements: http://rentonwa.gov/business/default.aspx?id=42473 4. A landscaping plan shall be included with the civil plan submittal. Each plan shall be on separate sheets. 5. Fees quoted in this document reflect the fees applicable in the year 2017 only and will be assessed based on the fee that is current at the time of the permit application or issuance, as applicable to the permit type. Please visit www.rentonwa.gov for the current development fee schedule. * An additional 5% technology fee will be added to each fee marked with an asterisk (*). 6. A demo permit is required for the demolition of the existing vault. The demo permit shall be acquired through the building department. DocuSign Envelope ID: 4576C8FD-5022-4B7E-8EBD-9B0DB50F2CBE Lighting Impingment Response 2018-0531.docx 10604 NE 38th Place, Suite 205, Kirkland, WA 98033  (425) 522-1000  (425) 828-2622 Fax 12730 E. Mirabeau Pkwy, Suite 300, Spokane Valley, WA 99216  (509) 922-7897  (509) 922-1898 Fax 5/31/2018 The Boeing Company 998 Logan Ave N Renton, WA 98057 Attention: Mark Clement Boeing Permit Specialist Subject: 4-87 Mitigation Hangar, Boeing Project # C180242 Lighting Impingement Response Dear Mr. Clement: I have reviewed the comments from the Muckleshoot Indian Tribe Fisheries Division Habitat Program’s Karen Walter and would like to address her comments regarding cumulative light contributions onto Lake Washington. Attached to this letter are fixture cutsheets and lighting model calculations used in the design of the 4-87 Mitigation Hangar building. Casne Engineering has been involved in, and performed Lighting Impingement Studies for, several projects where lighting modifications have been made adjacent to both the Cedar River and Lake Washington. We are familiar with the concerns that Boeing, the City of Renton, and the Muckleshoot Indian Tribe put on minimizing light pollution on these nearby bodies of water and the surrounding wildlife, and have prioritized this when discussing the design of exterior lighting for the 4-87 Mitigation Hangar building. To effectively minimize light impingement on to Lake Washington all fixtures selected to be installed for pedestrian egress lighting on the exterior perimeter of the 4-87 building are fully cutoff, fully shielded, IDA Dark Sky approved, and not to be installed at an elevation higher than 12-feet above grade. These are identified in the attached lighting model as fixtures 1 and 2. Located on the west side of the 4-87 building, four (4) floodlights are to be installed at an elevation of approximately 80-feet above grade. These fixtures, identified as fixture 3 in the attached lighting model, are to be aimed downward, directly at the aircraft, and designed specifically to be pointed westward to avoid impinging light on to Lake Washington. These fixtures will have manual controls and are not designed to automatically turn on at sunset, and shall only be used when performing maintenance on aircraft located outside of the 4 -87 building’s hangar doors. The attached lighting model also shows calculated, additional, light levels at the shoreline of Lake Washington, with results averaging less than one-tenth of one foot-candle. Sincerely, Derek A. Townsend Engineering Project Manager RECEIVED 06/04/2018 amorganroth PLANNING DIVISION Exhibit 12 RevisionsDate#CommentsMitigation HangarRenton, WADrawn: C. LinderChecked: D. TownsendDate: 05.30.18Page 1 of 1 A 5 4.5 4 3.5 35.5 EE AA BB CC DD 5.86.3 B737-900737-9000.9 1.4 2.1 2.3 0.8 1.2 1.8 1.8 0.7 1.1 1.9 2.1 0.8 1.0 1.4 1.4 1.9 0.7 0.3 0.2 4.8 1.3 0.5 0.3 1.0 1.3 1.0 0.5 3.0 3.9 2.0 0.8 10.78.6 2.9 1.0 4.1 4.8 2.3 0.9 0.7 1.4 1.2 0.7 0.3 0.8 0.9 0.6 1.0 1.9 1.5 0.8 6.3 6.2 2.5 1.0 9.3 7.9 2.8 1.0 1.9 2.9 1.8 0.8 0.4 0.9 0.9 0.6 0.4 0.9 0.9 0.6 1.8 2.8 1.8 0.8 9.2 7.9 2.8 1.0 6.5 6.3 2.5 0.9 1.8 2.2 1.4 0.7 5.5 1.5 0.7 0.4 5.4 1.4 0.5 0.2 4.5 1.4 0.5 0.2 12.4 0.6 0.5 0.5 0.6 4.0 2.7 0.5 0.5 0.5 0.7 12.7 2.5 2.2 1.6 1.5 2.1 3.2 3.0 1.9 1.5 1.6 2.2 2.4 1.7 1.8 1.5 1.6 2.2 3.0 2.9 2.0 1.5 1.5 1.8 1.6 1.1 1.2 1.2 1.3 1.6 1.9 1.9 1.5 1.2 1.1 1.1 1.0 0.7 0.8 0.9 0.9 1.1 1.2 1.2 1.1 0.9 0.8 0.8 0.6 0.5 0.6 0.6 0.7 0.8 0.8 0.8 0.8 0.6 0.6 0.5 0.4 0.3 0.4 0.4 0.5 0.6 0.6 0.6 0.5 0.5 0.4 0.4 0.3 0.2 0.2 0.1 0.1 0.1 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.2 4 FXLED300SFN 0.850 Flood Light - 300W 316.1 35087 Luminaire Schedule Symbol Qty Label LLF Description Lum. Watts Lum. Lumens 4 G400PM00LWR 0.200 Existing Pole - 400W 450 29828 10 WPLED52N 0.850 Wall Pack - 52W 58.2 7236 5 WPLED10N 0.850 Wall Pack - 10W 12.2 1208 Calculation Summary Label Units Avg Max Avg/Min Max/Min Hangar North_Ground Fc 2.30 10.7 11.50 53.50 Hangar West_Planar Fc 1.49 12.7 4.97 42.33 South Lot_Ground Fc 1.33 2.3 1.90 3.29 Fixture 2 Fixture 1 Fixture 1 Fixture 1 Fixture 2 Fixture 1 Fixture 3Fixture 3Fixture 3 Fixture 1Fixture 1 Fixture 3Fixture 2 Fixture 1 Fixture 1 Fixture 1 Fixture 2 Fixture 1 Fixture 2 Foot-Candles at Shoreline Fixture 3 Aim Point (typ.) WPLED52N LED 52W Wallpacks. 3 cutoff options. Patent Pending thermal management system. 100,000 hour L70 lifespan. 5-year, no-compromise warranty. Color: Bronze Weight: 17.6 lbs Project:Type: Prepared By:Date: Driver Info Type:Constant Current 120V:0.51A 208V:0.33A 240V:0.29A 277V:0.24A Input Watts:58W Efficiency:89% LED Info Watts:52W Color Temp:4000K Color Accuracy:72 CRI L70 Lifespan:100000 Lumens:7236 Efficacy:124 LPW Technical Specifications Listings UL Listing: Suitable for wet locations DLC Listed: This product is on the Design Lights Consortium (DLC) Qualified Products List and is eligible for rebates from DLC Member Utilities. DLC Product Code: P00001742 IESNA LM-79 & IESNA LM-80 Testing: RAB LED luminaires have been tested by an independent laboratory in accordance with IESNA LM- 79 and 80, and have received the Department of Energy "Lighting Facts" label LED Characteristics Lifespan: 100,000-hour LED lifespan based on IES LM-80 results and TM-21 calculations LEDs: Two (2) multi-chip, high-output, long-life LEDs Color Consistency: 3-step MacAdam Ellipse binning to achieve consistent fixture-to-fixture color Color Stability: LED color temperature is warrantied to shift no more than 200K in CCT over a 5 year period Color Uniformity: RAB's range of CCT (Correlated Color Temperature) follows the guidelines of the American National Standard for Specifications for the Chromaticity of Solid State Lighting (SSL) Products, ANSI C78.377- 2017. Electrical Drivers: Two drivers, constant current, 720mA, Class 2, 100 - 277V, 50 - 60 Hz, 100 - 277VAC .8 Amps. THD: 6.5% at 120V, 7.8% at 277V Power Factor: 99.3% at 120V, 97.2% at 277V Surge Protection: 6kV Construction Ambient Temperature: SuitableFor use in 40°C (104°F) ambient temperatures Cold Weather Starting: Minimum starting temperature is -40°C (-40°F) Housing: Precision die cast aluminum housing, lens frame Mounting: Die-cast aluminum wall bracket with (5) 1/2" conduit openings with plugs. Two-piece bracket with tether for ease of installation and wiring. Arm: Die-cast aluminum with wiring access plate Cutoff: Standard (15°) Reflector: Specular vacuum-metallized polycarbonate Gaskets: High temperature silicone Lens: Tempered glass Finish: Formulated for high-durability and long lasting color Green Technology: Mercury and UV-free. RoHS compliant components. Polyester powder coat finish formulated without the use of VOCs or toxic heavy metals. Other Warranty: RAB warrants that our LED products will be free from defects in materials and workmanship for a period of five (5) years from the date of delivery to the end user, including coverage of light output, color stability, driver performance and fixture finish. Patents: The WPLED design is protected by patents in the U.S. Pat D653,377, Canada Pat. 142252, China Pat. ZL201130356930.8, and Mexico Pat. 36921 and pending patent in TW. Replacement: Replaces 250W HID Need help? Tech help line: (888) RAB-1000 Email: sales@rabweb.com Website: www.rabweb.com Copyright © 2018 RAB Lighting Inc. All Rights Reserved Note: Specifications are subject to change at any time without notice Page 1 of 2 Fixture 1 WPLED52N Technical Specifications (continued) Other Buy American Act Compliance: RAB values USA manufacturing! Upon request, RAB may be able to manufacture this product to be compliant with the Buy American Act (BAA). Please contact customer service to request a quote for the product to be made BAA compliant. Optical BUG Rating: B0 U2 G3 Dimensions Features High performance LED light engine Maintains 70% of initial lumens at 100,000 hours Weatherproof high temperature silicone gaskets Superior heat sinking with die cast aluminum housing and external fins Replaces 250W MH Traditional wallpack look from the front 3 cutoff options 5-year, no-compromise warranty Ordering Matrix Family Cutoff Wattage Color Temp Finish Driver Options Options WPLED 52 N Blank = Standard (15°) C = Cutoff (7.5°) FC = Full Cutoff (0°) 80 = 80W 52 = 52W Blank = 5000K (Cool) N = 4000K (Neutral) Y = 3000K (Warm) Blank = Bronze W = White Blank = 120-277V /480 = 480V /BL = Bi-Level /D10 = 0-10V Dimming Blank = No Option /PCS = 120V Swivel Photocell /PCS2 = 277V Swivel Photocell /PCS4 = 480V Swivel Photocell /LC = Lightcloud® Need help? Tech help line: (888) RAB-1000 Email: sales@rabweb.com Website: www.rabweb.com Copyright © 2018 RAB Lighting Inc. All Rights Reserved Note: Specifications are subject to change at any time without notice Page 2 of 2 WPLED10N LED 10W & 13 Wallpacks. Patent Pending thermal management system. 100,000 hour L70 lifespan. 5-year, no-compromise warranty. Color: Bronze Weight: 3.3 lbs Project:Type: Prepared By:Date: Driver Info Type:Constant Current 120V:0.1A 208V:0.07A 240V:0.06A 277V:0.05A Input Watts:12W Efficiency:82% LED Info Watts:10W Color Temp:4000K Color Accuracy:83 CRI L70 Lifespan:100000 Lumens:1208 Efficacy:99 LPW Technical Specifications Listings UL Listing: Suitable for Wet Locations as a Downlight. Suitable for Damp Locations as an Uplight. Wall Mount only. Suitable for Mounting within 4ft. of ground. Dark Sky Approved: The International Dark Sky Association has approved this product as a full cutoff, fully shielded luminaire IESNA LM-79 & IESNA LM-80 Testing: RAB LED luminaires have been tested by an independent laboratory in accordance with IESNA LM- 79 and 80, and have received the Department of Energy "Lighting Facts" label LED Characteristics Lifespan: 100,000-hour LED lifespan based on IES LM-80 results and TM-21 calculations Color Consistency: 3-step MacAdam Ellipse binning to achieve consistent fixture-to-fixture color Color Stability: LED color temperature is warrantied to shift no more than 200K in CCT over a 5 year period Color Uniformity: RAB's range of CCT (Correlated Color Temperature) follows the guidelines of the American National Standard for Specifications for the Chromaticity of Solid State Lighting (SSL) Products, ANSI C78.377- 2017. Lumen Maintenance: The LED will deliver 70% of its initial lumens at 100,000 hours of operation Construction Finish: Formulated for high-durability and long lasting color Cold Weather Starting: Minimum starting temperature is -40°C (-40°F) Maximum Ambient Temperature: Suitable for use in 40°C (104°F) ambient temperatures Thermal Management: Cast aluminum Thermal Management system for optimal heat sinking. The LPACK is designed for cool operation, most efficient output and maximum LED life by minimizing LED junction temperature. Housing: Precision die cast aluminum housing, lens frame Mounting: Surface plate and Junction box Green Technology: Mercury and UV-free. RoHS compliant components. Polyester powder coat finish formulated without the use of VOCs or toxic heavy metals. For use on LEED Buildings: IDA Dark Sky Approval means that this fixture can be used to achieve LEED Credits for Light Pollution Reduction Gaskets: High Temperature Silicone Electrical Driver: Multi-chip 10W high output long life LED Driver Constant Current, Class II, 120V-240V, 50/60/ Hz, 350mA Other Patents: The design of the LPACK is protected by U.S. Pat. D604,004 and patents pending in Canada, China and Taiwan. Patents: The LPACK design is protected under patents in the U.S. Pat. D608,040, Canada Pat. 130,243, China Pat. 200930183252.2, and pending patents in Taiwan and Mexico. Warranty: RAB warrants that our LED products will be free from defects in materials and workmanship for a period of five (5) years from the date of delivery to the end user, including coverage of light output, color stability, driver performance and fixture finish. Equivalency: Equivalent to 70W Metal Halide HID Replacement Range: Replaces 35-100W Metal Halide Buy American Act Compliance: RAB values USA manufacturing! Upon request, RAB may be able to manufacture this product to be compliant with the Buy American Act (BAA). Please contact customer service to request a quote for the product to be made BAA compliant. Need help? Tech help line: (888) RAB-1000 Email: sales@rabweb.com Website: www.rabweb.com Copyright © 2018 RAB Lighting Inc. All Rights Reserved Note: Specifications are subject to change at any time without notice Page 1 of 2 Fixture 2 WPLED10N Dimensions Features High performance LED light engine Maintains 70% of initial lumens at 100,000 hours Weatherproof high temperature silicone gaskets Superior heat sinking with die cast aluminum housing and external fins 5-year, no-compromise warranty Ordering Matrix Family Wattage Color Temp Sensor Surface Plate Surface Place Finish Photocell WPLED 10 = 10W 13 = 13W Blank = 5000K (Cool) Y = 3000K (Warm) N = 4000K (Neutral) Blank = No Sensor MS = Mini Sensor Blank = No Surface Plate S = Surface Plate Blank = Bronze W = White Blank = No Photocell /PC = 120V Button /PCS = 120V Swivel /PC2 = 277V Button Need help? Tech help line: (888) RAB-1000 Email: sales@rabweb.com Website: www.rabweb.com Copyright © 2018 RAB Lighting Inc. All Rights Reserved Note: Specifications are subject to change at any time without notice Page 2 of 2 FXLED300SFN Ultra high output, high efficiency LED floodlight with NEMA Types: 7H x 6V, 6H x 4V, 4H x 6V, 5H x 5V and 3H x 3V. Patent Pending airflow technology ensures long LED and driver lifespan. Use for general and security lighting for large areas, building facades, signs and landscapes. Color: Bronze Weight: 66.1 lbs Project:Type: Prepared By:Date: Driver Info Type:Constant Current 120V:2.65A 208V:1.59A 240V:1.38A 277V:1.17A Input Watts:316W Efficiency:95% LED Info Watts:300W Color Temp:4000K Color Accuracy:82 CRI L70 Lifespan:100000 Lumens:34800 Efficacy:110 LPW Technical Specifications Listings UL Listing: Suitable for wet locations. Suitable for ground mounting. IESNA LM-79 & LM-80 Testing: RAB LED luminaries have been tested by an independent laboratory in accordance with IESNA LM- 79 and LM-80, and have been received the Department of Energy "Lighting Facts" label DLC Listed: This product is on the Design Lights Consortium (DLC) Qualified Products List and is eligible for rebates from DLC Member Utilities. DLC Product Code: P7HRCS9H Electrical Drivers: Constant Current, 1050mA, 50/60 Hz, 120-277V, 4 kV surge protection, 120V: 2.65A, 208V: 1.59A, 240V: 1.38A, 277V: 1.17A, THD <20%, Power Factor: 99% THD: 7.0% at 120V, 11.0% at 277V Optical NEMA Type: NEMA Beam Spread of 7H x 6V LED Characteristics Lifespan: 100,000-hour LED lifespan based on IES LM-80 results and TM-21 calculations LEDs: Multip-chip, high-output, long-life LEDs Color Consistency: 3-step MacAdam Ellipse binning to achieve consistent fixture-to-fixture color Color Stability: LED color temperature is warrantied to shift no more than 200K in CCT over a 5 year period Color Uniformity: RAB's range of CCT (Correlated Color Temperature) follows the guidelines of the American National Standard for Specifications for the Chromaticity of Solid State Lighting (SSL) Products, ANSI C78.377- 2017. Construction IP Rating: Ingress Protection rating of IP66 for dust and water Maximum Ambient Temperature: Suitable for use in 40°C (104°F) ambient temperatures Effective Projected Area: EPA = 4 Cold Weather Starting: Minimum starting temperature is -40°C (-40°F) Thermal Management: Superior thermal management with external "Air-Flow" fins Lens: Tempered glass lens Housing: Die-cast aluminum housing and door frame Mounting: Heavy-duty Slipfitter for 2 3/8"OD pipe Reflector: Specular and semi-specular vacuum metalized polycarbonate Gaskets: High-temperature silicone gaskets Finish: Formulated for high-durability and long lasting color Green Technology: Mercury and UV-free. RoHS compliant components. Polyester powder coat finish formulated without the use of VOCs or toxic heavy metals. Other Warranty: RAB warrants that our LED products will be free from defects in materials and workmanship for a period of five (5) years from the date of delivery to the end user, including coverage of light output, color stability, driver performance and fixture finish. American Bureau of Shipping (ABS) : For use on Mobile Offshore Drilling Units (MODU) and shipping vessels Replacement: Replaces 1000W Metal Halide Need help? Tech help line: (888) RAB-1000 Email: sales@rabweb.com Website: www.rabweb.com Copyright © 2018 RAB Lighting Inc. All Rights Reserved Note: Specifications are subject to change at any time without notice Page 1 of 2 Fixture 3 FXLED300SFN Technical Specifications (continued) Other BAA Compliance: Click for BAA compliance. Buy American Act Compliance: RAB values USA manufacturing! Upon request, RAB may be able to manufacture this product to be compliant with the Buy American Act (BAA). Please contact customer service to request a quote for the product to be made BAA compliant. Dimensions Features 300W replaces 1000 MH floodlights 100,000-hour LED lifespan 5-year No Compromise Warranty Ordering Matrix Family Wattage Mounting Color Temp NEMA Type Finish Driver Options Options FXLED 300 SF N 200 = 200W 300 = 300W SF = Slipfitter T = Trunnion Blank = 5000K (Cool) N = 4000K (Neutral) Y = 3000K (Warm) Blank = 7H x 6V B64 = 6H x 4V B55 = 5H x 5V B33 = 3H x 3V B46 = 4H x 6V Blank = Bronze W = White Blank = 120V /480 = 480V /BL = Bi-Level (Slipfitters only) /D10 = 0-10V Dimming Blank = No option /PCS = 120V Swivel /PCS2 = 277V Swivel /PCT = 120-277V Twistlock /PCT4 = 480V Twistlock /PCS4 = 480V Swivel /LC = Lightcloud® Controller Need help? Tech help line: (888) RAB-1000 Email: sales@rabweb.com Website: www.rabweb.com Copyright © 2018 RAB Lighting Inc. All Rights Reserved Note: Specifications are subject to change at any time without notice Page 2 of 2 1 Alex Morganroth From:Karen Walter <KWalter@muckleshoot.nsn.us> Sent:Friday, June 08, 2018 4:28 PM To:Alex Morganroth Subject:RE: Boeing Mitigation Hangar, LUA18-000293; PR18-000208, Notice of Application/ODNS Alex, Thank you for sending us Boeing's responses and the lighting study they did for the new Boeing Hanger Project. We also appreciate the City putting the project on hold to give us a chance to review this information. Based on what we have reviewed and the data we provided (i.e. USFWS monitoring data from the WDNR/WSDOT shoreline mitigation project along Lake Washington near the project site), there appears to be the need for further review and analysis of existing and proposed lightin potential impacts. As you and I discussed, we think there seems to be discrepancies between the data sets that needs resolution. I cannot tell if the differences are due to methodologies, survey areas or what. We suggest that a first step to address our project lighting impact concerns is to have a meeting with relevant staff from the City, Boeing and their light study consultants, MITFD, WDOE, WDFW, the Army Corps of Engineers, and Dr. Roger Tabor/ USFWS staff who are monitoring the mitigation site. The purpose of this meeting would be to review the available data and determine if additional lighting studies are needed and/or if additional mitigation measures are needed to reduce lighting impacts. As part of this meeting, the City and/or Boeing should provide information regarding the lighting reduction work done to date that was required as part of mitigation for the Cedar River maintenance dredging. We are happy to help coordinate this meeting. Please let me know. Best regards, Karen Walter Watersheds and Land Use Team Leader Muckleshoot Indian Tribe Fisheries Division Habitat Program 39015 172nd Ave SE Auburn, WA 98092 253-876-3116 ________________________________________ From: Alex Morganroth [AMorganroth@Rentonwa.gov] Sent: Monday, June 04, 2018 11:23 AM To: Karen Walter Subject: RE: Boeing Mitigation Hangar, LUA18-000293; PR18-000208, Notice of Application/ODNS Hi Karen, Please see attached for the response from Boeing with regards to the lighting for the Boeing Hangar Project. The Environmental Review Committee will be meeting at 2:30pm today to review the project and make a determination. Please let me know if you have any additional comments or concerns. Thank you, EXHIBIT 13 RECEIVED 06/12/2018 amorganroth PLANNING DIVISION 2 Alex Morganroth, Associate Planner City of Renton | CED | Planning Division 1055 S Grady Way | 6th Floor | Renton, WA 98057 (425) 430-7219 | amorganroth@rentonwa.gov<mailto:amorganroth@rentonwa.gov> Alex Morganroth, Associate Planner City of Renton | CED | Planning Division 1055 S Grady Way | 6th Floor | Renton, WA 98057 (425) 430-7219 | amorganroth@rentonwa.gov<mailto:amorganroth@rentonwa.gov> From: Karen Walter [mailto:KWalter@muckleshoot.nsn.us] Sent: Wednesday, May 23, 2018 3:42 PM To: Alex Morganroth <AMorganroth@Rentonwa.gov> Subject: RE: Boeing Mitigation Hangar, LUA18-000293; PR18-000208, Notice of Application/ODNS Alex, We have reviewed the Notice of Application/ODNS and the available information for the proposed new hanger (Building 4-87) at Boeing’s 737 plant site. We offer the following questions/initial comments: More information is needed regarding lighting at this new building which is approximately 250 feet from the OWHM of Lake Washington. As we have been commenting on various projects at the Renton plant site and the City’s maintenance dredging on the Cedar River, we are extremely concerned about artificial lighting and its impacts on juvenile salmon and salmon predator behaviors. This proposed new building is near the WDNR/WSDOT mitigation site on Lake Washington which has improved nearshore habitat for juvenile Chinook; however, per the attached monitoring report, lighting associated with the Boeing plant site appears to have increased to the potential detriment of Chinook salmon(see Attachments 1 and 2). The new building with additional artificial lighting could exasperate this condition. Therefore, the applicant should provide more information about proposed artificial lighting; an analysis of potential impacts from this lighting and light intensity that can reach the nearshore of Lake Washington; and how the applicant will be avoiding, minimizing, and mitigation for artificial lighting impacts. We appreciate the opportunity to review this proposal and look forward to the City of Renton/Boeing’s responses. If you have questions, please let me know. Thank you, Karen Walter Watersheds and Land Use Team Leader Muckleshoot Indian Tribe Fisheries Division Habitat Program 39015-A 172nd Ave SE Auburn, WA 98092 253-876-3116 From: Kyle Wunderlin [mailto:KWunderlin@Rentonwa.gov] Sent: Wednesday, May 09, 2018 11:28 AM To: Karen Walter; Laura Murphy; 'separegister@ecy.wa.gov'; 'sepaunit@ecy.wa.gov'; 'misty.blair@ecy.wa.gov'; 'Sepadesk@dfw.wa.gov'; 'sepacenter@dnr.wa.gov'; 'Minnie.Dhaliwal@TukwilaWA.gov'; 'Gary.Kriedt@kingcounty.gov'; 'steveo@newcastlewa.gov'; 'andy.swayne@pse.com' Cc: Alex Morganroth Subject: NOA Revision: PR18-000208 Boeing Mitigation Hangar, LUA18-000293 Hello, Exhibit 13 3 The Notice of Application has been updated for the following project: PR18-000208 Boeing Mitigation Hangar, LUA18- 000293. Please see attached. As the project progresses, more information will be available by request and through our online Public Notice of Land Use Applications Map<http://rentonwa.maps.arcgis.com/apps/Minimalist/index.html?appid=ba8be73232e44a2fa126a36c109800b2>. Thank you, Kyle Wunderlin, Planning Technician City of Renton | CED | Planning Division 1055 South Grady Way | 6th Floor | Renton, WA 98057 Phone: (425) 430-6583 | Fax: (425) 430-7300 | kwunderlin@rentonwa.gov<mailto:kwunderlin@rentonwa.gov> Lighting Impingment Response R1 2018-0615.docx 10604 NE 38th Place, Suite 205, Kirkland, WA 98033  (425) 522-1000  (425) 828-2622 Fax 12730 E. Mirabeau Pkwy, Suite 300, Spokane Valley, WA 99216  (509) 922-7897  (509) 922-1898 Fax 6/15/2018 The Boeing Company 998 Logan Ave N Renton, WA 98057 Attention: Mark Clement Boeing Permit Specialist Subject: 4-87 Mitigation Hangar, Boeing Project # C180242 Lighting Impingement Response – Revision 1 Dear Mr. Clement: In response to the City of Renton’s request to lower the foot-candle levels below the .1 fc shown in our earlier lighting model, we have reviewed several options that could accommodate this request while maintaining a safe level of light for aircraft operations. Design modifications that were considered include adjusting fixture mounting heights, re- aiming of fixtures closer inland, adding fixture cutoffs or shielding, and finally eliminating fixtures. During this process we identified two fixtures that had a direct impact on light levels along the Lake Washington shoreline. By eliminating these two fixtures we could achieve a calculated foot-candle reading of 0.0 fc with an acceptably minimized impact to the area lighting in front of the 4-87 hangar doors. The attached lighting model reflects these results and will be included in the next drawing revision for review. Sincerely, Derek A. Townsend Engineering Project Manager RECEIVED 06/19/2018 amorganroth PLANNING DIVISION 06/15/2018 Exhibit 14 RevisionsDate# CommentsMitigation HangarRenton, WADrawn: C. LinderChecked: D. TownsendPage 1 of 1Date: 06.15.18737-900737-9000.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.3 1.2 1.3 1.3 0.9 0.9 1.4 2.1 2.3 1.2 1.7 1.5 1.4 0.9 0.8 1.2 1.8 1.8 1.2 1.5 1.3 1.5 0.9 0.7 1.1 1.9 2.1 1.3 1.3 1.5 1.2 0.8 0.8 1.0 1.4 1.4 1.9 0.7 0.3 0.2 4.8 1.3 0.5 0.3 1.0 1.3 1.0 0.5 3.0 3.9 2.0 0.8 10.7 8.6 2.9 1.0 4.1 4.8 2.3 0.9 0.7 1.4 1.2 0.7 0.3 0.8 0.9 0.6 1.0 1.9 1.5 0.8 6.3 6.2 2.5 1.0 9.3 7.9 2.8 1.0 1.9 2.9 1.8 0.8 0.4 0.9 0.9 0.6 0.4 0.9 0.9 0.6 1.8 2.8 1.8 0.8 9.2 7.9 2.8 1.0 6.5 6.3 2.5 0.9 1.8 2.2 1.4 0.7 5.5 1.5 0.7 0.4 1.3 0.7 0.3 0.2 0.4 0.2 0.2 0.1 0.2 0.4 0.6 1.0 1.2 0.7 0.4 0.5 0.8 1.1 0.9 0.3 0.3 0.5 0.7 1.1 1.5 1.6 1.0 0.7 0.9 1.2 1.4 1.0 0.3 0.5 0.7 1.0 1.3 1.4 1.2 0.9 0.8 1.0 1.2 1.0 0.3 0.4 0.6 0.8 0.9 1.0 0.9 0.8 0.7 0.8 0.8 0.7 0.3 0.3 0.5 0.6 0.7 0.7 0.7 0.6 0.5 0.6 0.5 0.4 0.2 0.3 0.3 0.4 0.5 0.5 0.5 0.4 0.4 0.4 0.4 0.3 0.2 0.2 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.2 0.2 Luminaire Schedule Symbol Qty Label LLF Description Lum. Watts Lum. Lumens 2 FXLED300SFN 0.850 Flood Light - 300W 316.1 35087 4 G400PM00LWR 0.200 Existing Pole - 400W 450 29828 10 WPLED52N 0.850 Wall Pack - 52W 58.2 7236 5 WPLED10N 0.850 Wall Pack - 10W 12.2 1208 Calculation Summary Label Units Avg Max Avg/Min Max/Min Hangar North_Ground Fc 2.17 10.7 21.70 107.00 Hangar West_Planar Fc 0.65 1.6 3.25 8.00 South Lot_Ground Fc 1.33 2.3 1.90 3.29