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Home My WebLink AboutC_ERC_Determination_Applicant_Letter_MayCreekTrestle_181026.pdf October 26, 2018 Stephanie Modjeski Otak, Inc. 2731 Westmore Ave, Ste. #300 Everett, WA 98201 SUBJECT: ENVIRONMENTAL THRESHOLD (SEPA) DETERMINATION May Creek Trestle Project, LUA18-000421 Dear Ms. Modjeski: 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 November 9, 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 more 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 date will be set and all parties notified. If you have any questions or desire clarification of the above, please call me at (425) 430-7289. For the Environmental Review Committee, Clark H. Close Senior Planner Enclosure: ERC Staff Report and Determination cc: Chris Erickson, King County DNRP Parks Division / Owner(s) Karen Walter, Muckleshoot Indian Tribe Fisheries Division / Party(ies) of Record DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT SIGNATURES: Gregg Zimmerman, Administrator Date Rick M. Marshall, Administrator Date Public Works Department Renton Regional Fire Authority Kelly Beymer, Administrator Date C.E. Vincent, Administrator Date Community Services Department Department Of Community & Economic Development ENVIRONMENTAL (SEPA) DETERMINATION OF NON-SIGNIFICANCE - MITIGATED (DNS-M) PROJECT NUMBER: LUA18-000421 APPLICANT: Stephanie Modjeski, Otak, Inc. / Stephanie.Modjeski@otak.com / 2731 Westmore Ave, Ste. #300, Everett, WA 98201 PROJECT NAME: May Creek Trestle Project PROJECT DESCRIPTION: The applicant, King County DNRP Parks and Recreation Division, is requesting Environmental (SEPA) Review and a Shoreline Administrative Conditional Use Permit to complete an expansion of existing over-water trails at May Creek. The May Creek Trestle Rehabilitation Project includes the repair and retrofit of the existing May Creek trestle for use as a King County trail bridge. The May Creek trestle is located above May Creek, approximately 300 feet north of N 41st St, just west of Lake Washington Blvd N. The project is located in the Residential-10 (R-10) zone. The bridge was historically used as a railroad bridge and currently still supports railroad tracks. The bridge is planned to become a part of the multi-use Eastside Rail Corridor in Renton. The May Creek trestle is approximately 60 feet long and 13 feet wide and is composed of timber pilings/columns, steel pile caps, timber stringers, timber railroad ties and steel railroad tracks. The site can be accessed by the trail connecting the trestle via N 41st St and N 43rd St. PROJECT LOCATION: West of Lake Washington Blvd N near N 41st St (APN 3224059005) 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 November 9, 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: October 26, 2018 DATE OF DECISION: October 22, 2018 DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 10/24/2018 | 10:32 AM PDT10/24/2018 | 2:10 PM PDT 10/25/2018 | 2:05 PM PDT DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT Project Location Map ERC Report_May_Creek_Trestle_Project_181022 ENVIRONMENTAL REVIEW COMMITTEE REPORT ERC Meeting Date: October 22, 2018 Project File Number: PR18-000304 Project Name: May Creek Trestle Project Land Use File Number: LUA18-000421, ECF, SMC Project Manager: Clark H. Close, Senior Planner Owner: Chris Erickson, King County Department of Natural Resources and Parks, Parks and Recreation Division, 201 S Jackson St #700, Seattle, WA 98104 Applicant: See Owner above Contact: Stephanie Modjeski, Otak, Inc., 2731 Westmore Ave, Ste. #300, Everett, WA 98201 Project Location: West of Lake Washington Blvd N near N 41st St (APN 3224059005) Project Summary: The applicant, King County DNRP Parks and Recreation Division, is requesting Environmental (SEPA) Review and a Shoreline Administrative Conditional Use Permit to complete an expansion of existing over-water trails at May Creek. The May Creek Trestle Rehabilitation Project includes the repair and retrofit of the existing May Creek trestle for use as a King County trail bridge. The May Creek trestle is located above May Creek, approximately 300 feet north of N 41st St, just west of Lake Washington Blvd N. The project is located in the Residential-10 (R-10) zone. The bridge was historically used as a railroad bridge and currently still supports railroad tracks. The bridge is planned to become a part of the multi-use Eastside Rail Corridor in Renton. The May Creek trestle is approximately 60 feet long and 13 feet wide and is composed of timber pilings/columns, steel pile caps, timber stringers, timber railroad ties and steel railroad tracks. The site can be accessed by the trail connecting the trestle via N 41st St and N 43rd St. Site Area: 3,483 square feet STAFF RECOMMENDATION: Staff Recommends that the Environmental Review Committee issue a Determination of Non-Significance - Mitigated (DNS-M). DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 City of Renton Department of Community & Economic Development May Creek Trestle Project Staff Report to the Environmental Review Committee LUA18-000421, ECF, SMC Report of October 22, 2018 Page 2 of 7 ERC Report_May_Creek_Trestle_Project_181022 PART ONE: PROJECT DESCRIPTION / BACKGROUND The applicant, King County Department of Natural Resources and Parks (DNRP), Parks and Recreation Division, is requesting Environmental (SEPA) Review and a Shoreline Administrative Conditional Use Permit (CUP) to complete an expansion of existing over-water trails at May Creek. Prior to submitting a Shoreline CUP, King County Parks prepared a combined Master Plan and Environmental Impact Statement (EIS) document for the Eastside Rail Corridor Regional Trail Master Plan Project. The combined Draft Master Plan and EIS was published on February 29, 2016 and a combined Final Master Plan was published on July 18, 2016. The King County Parks and Recreation Division Director selected the Master Plan’s Preferred Alternative alignment on August 1, 2017. As noted in the “Notice of Action Taken” under SEPA, that trail design and construction would be the subject of future environmental review and were not governed by the Notice of Action (Exhibit 20). May Creek is a tributary to Lake Washington that drains the area north of the Cedar River and west of Issaquah Creek (Exhibit 7). The May Creek Trestle Rehabilitation Project includes the repair and retrofit of the existing May Creek trestles for use as a King County trail bridge in Renton. The May Creek trestle is located above May Creek, approximately 300 feet north of N 41st St, just west of Lake Washington Blvd N and approximately 840 feet from the waters of Lake Washington (Exhibit 2). The trail development project is located in the Residential-10 (R-10) zone. The bridge was historically used as a railroad bridge and currently still supports railroad tracks. The bridge is planned to become a part of the multi-use Eastside Rail Corridor in Renton. The Eastside Rail Corridor is a 42-mile rail corridor that stretches from Renton to Snohomish, the Eastside Rail Corridor passes through Renton, Bellevue, Kirkland, Woodinville, Redmond, and portions of unincorporated King and Snohomish counties (Exhibit 7). The May Creek trestle bridge deck span is approximately 60 feet long, 13 feet wide, and 15 feet above the May Creek channel and is composed of timber pilings/columns, steel pile caps, timber stringers, timber railroad ties and steel railroad tracks. The site can be accessed by the trail connecting the trestle either from N 41st St and/or N 43rd St. The May Creek Bridge has defects and is deteriorated and requires repairs and retrofits to provide an extended lifespan and continued use. Trail approaches would be re-graded with existing material. The project would involve approximately 21 cubic yards (CY) of excavation for removal of the timber back walls and wing walls and there would be approximately 21 CY of replacement fill, consisting of new timber back walls and gravity block walls. There would also be approximately 20 CY of temporary fill for the construction entrance. The project would occur above the ordinary high water mark (OHWM) to repair portions of the trestle that span the stream. Up to four pilings are proposed to be repaired, using only hand tools and personnel (no motorized equipment), within the OHWM. A small crane/excavator would be positioned in the Eastside Rail Corridor right-of-way to allow for materials to be transported to and from the bridge deck. Work would occur above the stream to remove timber ties and tracks and to install new decking and railing. The May Creek trestle new bridge decking would be constructed of precast concrete panels and would create approximately 840 square feet of new, non-pollution generating impervious surface. The project was originally anticipated to occur in July 2018 with a completion date in October 2018. The project is 840 feet from the shoreline of Lake Washington in May Creek Reach A and would not impact flood zones (Exhibit 3). No wetlands are located within the immediate vicinity of the project site. No trees or woody shrubs would be removed. The applicant has submitted a Geotechnical Memorandum (Exhibit 5), and Critical Areas Technical Memorandum (Exhibit 6), and an Ecosystem Resources Inventory (Exhibit 7) with the application. On April 13, 2018, the City issued a Shoreline Exemption to repair and retrofit two (2) recreational pedestrian trestle bridges that are planned to become part of the multi-use Eastside Rail Corridor Regional Trail in the Kennydale area (Exhibit 9). 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. DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 City of Renton Department of Community & Economic Development May Creek Trestle Project Staff Report to the Environmental Review Committee LUA18-000421, ECF, SMC Report of October 22, 2018 Page 3 of 7 ERC Report_May_Creek_Trestle_Project_181022 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 provide the City of Renton with a temporary alternate/detour route and a traffic control plan for users of the multi-use Eastside Rail Corridor during construction of the May Creek Trestle Project. The temporary alternate/detour route and traffic control plan would be reviewed and approved by the Plan Review Project Manager and shall include public notice and onsite signage for a minimum of two (2) weeks prior to construction permit issuance. C. Exhibits Exhibit 1: Environmental Review Committee (ERC) Report Exhibit 2: Neighborhood Detail Map Exhibit 3: Flood Hazard Map Exhibit 4: May Creek Trestle Plan Set (9 Sheets) Exhibit 5: Geotechnical Memorandum prepared by Otak, Inc. Exhibit 6: Critical Areas Technical Memorandum (dated February 7, 2018) Exhibit 7: Ecosystem Resources Inventory, Eastside Rail Corridor Regional Trail Master Plan Project prepared by Parametrix (dated May 12, 2015) Exhibit 8: Shoreline Tracking Worksheet Exhibit 9: Certificate of Exemption (dated April 13, 2018) Exhibit 10: Muckleshoot Indian Tribe Fishery Division Comments (dated July 9, 2018) Exhibit 11: Staff Response Letter to Muckleshoot Indian Tribe Fisheries Division (dated July 17, 2018) Exhibit 12: Project On Hold Notice Letter (dated July 17, 2018) Exhibit 13: King County Reponses to Muckleshoot Concerns (dated October 1, 2018) Exhibit 14: Off Hold Letter (dated October 2, 2018) Exhibit 15: Muckleshoot Indian Tribe Fishery Division Additional Comments (dated October 9, 2018) Exhibit 16: Staff Response Letter to Muckleshoot Indian Tribe Fisheries Division (2) (dated October 16, 2018) Exhibit 17: Construction Mitigation Description Exhibit 18: Conditional Use Permit Justification Exhibit 19: Flood Insurance Rate Map Exhibit 20: Notice of Action Taken, Eastside Rail Corridor (ERC) Trail Master Plan (dated August 1, 2017) 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 DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 City of Renton Department of Community & Economic Development May Creek Trestle Project Staff Report to the Environmental Review Committee LUA18-000421, ECF, SMC Report of October 22, 2018 Page 4 of 7 ERC Report_May_Creek_Trestle_Project_181022 with the proposed development. Staff reviewers have identified that the proposal is likely to have the following probable impacts: 1. Earth Impacts: The applicant submitted a geotechnical memorandum prepared by Otak, Inc. (Otak) that provides a summary of the May Creek Bridge (bridge) components that interface with the soil (Exhibit 5). According to the memorandum, the existing bridge is founded on timber pilings which would not be modified in a way that affects their capacity to support the bridge (e.g. embedment depth or bearing capacity). The structure is supported by transverse bents. Each of the five (5) timber pile bents vary in size from twelve to fourteen inches in diameter. The area of bents is approximately 30 square feet (Exhibit 8). The existing soils located behind the end bents of the bridge consist of granular material originally used to support a railroad. The anticipated loads for the trail use are less than the original railroad loading and would not compromise the approach soils. The applicant is proposing to replace the rotting timber end walls, which support the approach embankment, in kind. The existing timbers have been in place for many decades and the new timbers are expected to meet the design life of the interim trail improvements. Temporary excavation slopes would not exceed the slope of the existing stable slopes at the sides of the approach embankment. Rotting timber wing walls, which support the approach embankment, would also be replaced with precast concrete blocks. The concrete blocks would be more stable than the existing condition and would meet the design life of the interim trail improvements. The surface over the bridge and the bridge approaches are flat and the majority of the project area is flat. The May Creek bridge deck spans 60 feet across and 13 feet wide and the bridge is approximately 15 feet above the water surface elevation of the stream (Exhibit 4). There is a moderate slope from the bridge approaches to the stream banks below on the north and south sides of the trestle. The steepest slope at the project site occurs at the north end of the May Creek trestle. The slope is approximately fifteen percent (15%) from the slope adjacent to the bridge deck surface to the stream bank below. No fill or excavation would take place below the Ordinary High Water Mark (OHWM) of May Creek. The pilings are proposed to remain in place. The project would include approximately 21 cubic yards (CY) of excavation for removal of the timber back walls and wing walls. There would be approximately 21 CY of replacement fill, consisting of new timber back walls and gravity block walls. Also, the applicant is proposing approximately 20 CY of temporary fill for the construction entrance. The majority of the repairs would be conducted using hand tools and a generator would be required for welding. A small crane would be used within the Eastside Rail Corridor right-of-way for movement of materials to and from the bridge deck. Minor vegetation disturbance and some temporary erosion could occur due to exposed soils. The applicant is proposing a temporary erosion and sediment control (TESC) plan with measures for appropriate construction best management practices (BMPs), such as working during the dry season, installing silt fencing along the stream bank and installing other flow barriers to avoid and minimize erosion during construction. Cleared areas would be limited to the stabilized construction entrance, access road and wheel wash area and high visibility fencing would be used to protect existing vegetation (Exhibit 16). It is anticipated that compliance with the City’s critical areas regulations, Shoreline Master Program and building codes would adequately mitigate for impacts to the construction of structures on this site; therefore no further mitigation is recommended at this time. Mitigation Measures: None recommended. Nexus: Not applicable. 2. Air Impacts: It is anticipated that some temporary air quality impacts from motorized equipment, such as a generator for a welder and a small crane and/or excavator for lifting materials to the top of the bridge DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 City of Renton Department of Community & Economic Development May Creek Trestle Project Staff Report to the Environmental Review Committee LUA18-000421, ECF, SMC Report of October 22, 2018 Page 5 of 7 ERC Report_May_Creek_Trestle_Project_181022 deck would occur. Maintenance of the equipment to meet State and Federal air quality emission requirements and standards would serve to mitigate the potential adverse impacts. After project completion, there would be no new emissions from the bridge. No further site specific mitigation for the identified impacts from typical vehicle and construction exhaust is required. Mitigation Measures: None recommended. Nexus: Not applicable. 3. Water a. Wetland, Streams, Lakes Impacts: The applicant submitted a Critical Areas Technical Memorandum prepared by Otak (dated February 7, 2018; Exhibit 6) with the project application. The submitted memorandum identifies May Creek below the May Creek trestle with a westerly stream flows. May Creek is a perennial stream and is classified as a Type S (Shoreline of the State) watercourse per Washington State Department of Natural Resources (DNR) and the City. The trestle is located above the special flood hazard area for the 100-year flood event as well as the floodway for May Creek. According to the applicant, the project would not result in any changes to the floodplain. The proposed work is associated with installing steel banding on the existing bridge pilings using hand tools, in order to improve structural integrity of the trestle. Biologists from Otak conducted a site inspection on November 13, 2017 and no wetlands were observed onsite or in the immediate vicinity of the project site. Per Renton Municipal Code (RMC) 4- 3-090.B.3.a the jurisdictional area for regulated shorelines includes lands within two hundred feet (200’), as measured on a horizontal plane, from the OHWM, or lands within two hundred fee (200’) from floodways, whichever is greater. Repairs to the May Creek trestle would occur over May Creek. The repairs include retrofitting up to four pilings with steel banding, removing the existing walkway, tracks, ties, and fencing, and replacing the existing walkway with new timber decking and railings. Construction equipment would also be located above the stream channel. No fill material would be placed in any surface water, no dredge material would be removed from any surface water and no surface water would be withdrawn or diverted as a component of the proposed project. Any impacts to the stream or buffer areas would be adequately mitigated by the City’s adopted Shoreline Master Program; therefore, no further mitigation is recommended. Mitigation Measures: None recommended. Nexus: Not applicable. b. Ground Water Impacts: According to the applicant, no groundwater would be withdrawn and no water would be discharge to groundwater as a result of the project. Any impacts to the stream or buffer areas would be adequately mitigated by the City’s adopted Critical Areas Regulations; therefore, no further mitigation is recommended. Mitigation Measures: None recommended. Nexus: Not applicable. c. Storm Water Impacts: Under existing conditions, stormwater runoff from the bridge deck of the trestle flows to May Creek. During construction and repair activities, the applicant is proposing to install erosion control methods such as temporary silt fencing or other flow barriers to protect water quality in streams from sediment during stormwater runoff. According to the applicant, upon completion of DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 City of Renton Department of Community & Economic Development May Creek Trestle Project Staff Report to the Environmental Review Committee LUA18-000421, ECF, SMC Report of October 22, 2018 Page 6 of 7 ERC Report_May_Creek_Trestle_Project_181022 the project there would be in no change in stormwater runoff and the project would not alter or affect drainage patterns in the vicinity of the site. Any impacts to the stream or buffer areas would be adequately mitigated by the City’s adopted Shoreline Master Program; therefore, no further mitigation is recommended. Mitigation Measures: None recommended. Nexus: Not applicable. 4. Wildlife Impacts: According to The Washington Department of Fish and Wildlife (WDFW) interactive map, known as Priority Habitat and Species (PHS) on the Web, May Creek includes Fall Chinook (Oncorhynchus tshawytscha) (federally-listed threatened), Coho (Oncorhynchus kitsutch), and winter steelhead (Oncorhynchus mykiss) (federally-listed threatened). The project is not expected to have an effect on instream habitat due to no in-water work being proposed. The project work intends to retrofit existing pilings of the trestle and replace the decking above May Creek. No impact to wildlife is anticipated as a result of this project. Mitigation Measures: None recommended. Nexus: Not applicable. 5. Environmental Health a. Noise Impacts: Noise impacts would primarily result from muffled motorized equipment from a small crane or excavator and the typical sounds of carpentry. Handheld equipment would be used for piling repair. Temporary noise would occur from a generator needed for onsite welding. The equipment noise would be regulated through the City’s adopted noise level regulations per Chapter 8-7, RMC. The City’s noise regulations limit haul hours between 8:30 am to 3:30 pm, Monday through Friday unless otherwise approved by the Development Services Division. Permitted work hours in or near residential areas are 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 is restricted to the hours between nine o’clock (9:00) a.m. and eight o’clock (8:00) p.m. No work is permitted on Sundays. The applicant indicates that all the construction noise impacts are anticipated to occur during daylight hours. No unusual noise impacts are proposed, which would require further levels of mitigation. Mitigation Measures: None recommended. Nexus: Not applicable. 6. Transportation Impacts: The proposed May Creek Trestle project is located west of I-405 along Lake Washington Blvd N near Exit 7. The closest direct access from a public road to the trail is via N 41st St and/or N 43rd St. It is anticipated that user access to this section of the multi-use Eastside Rail Corridor would be closed or at least temporarily interrupted during removal and replacement of the decking. An approved traffic control plan would be required prior to construction permit approval if the project generates traffic impacts to City streets. In order to accommodate users of the trail during the construction period, it is anticipated that users of the Eastside Rail Corridor would be re-routed to Lake Washington Blvd N. As SEPA mitigation, Staff recommends that the applicant shall provide the City of Renton with a temporary alternate/detour route and a traffic control plan for users of the multi-use Eastside Rail Corridor during construction of the May Creek Trestle Project. The temporary alternate/detour route and traffic control plan would be reviewed and approved by the Plan Review Project Manager and shall include public notice and onsite signage for a minimum of two (2) weeks prior to construction permit issuance. DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 City of Renton Department of Community & Economic Development May Creek Trestle Project Staff Report to the Environmental Review Committee LUA18-000421, ECF, SMC Report of October 22, 2018 Page 7 of 7 ERC Report_May_Creek_Trestle_Project_181022 Mitigation Measures: The applicant shall provide the City of Renton with a temporary alternate/detour route and a traffic control plan for users of the multi-use Eastside Rail Corridor during construction of the May Creek Trestle Project. The temporary alternate/detour route and traffic control plan would be reviewed and approved by the Plan Review Project Manager and shall include public notice and onsite signage for a minimum of two (2) weeks prior to construction permit issuance. Nexus: RMC 4-4-030 Development Guidelines and Regulations – General and Manual of Uniform Traffic Control Devices (MUTCD). 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 November 9, 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. DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 CITY OF RENTON DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT STAFF REPORT TO THE ENVIRONMENTAL REVIEW COMMITTEE EXHIBITS Project Name: May Creek Trestle Project Land Use File Number: LUA18-000421, ECF, SMC Date of Meeting October 22, 2018 Staff Contact Clark H. Close Senior Planner Project Contact/Applicant Stephanie Modjeski, Otak, Inc., 2731 Westmore Ave, Ste. #300, Everett, WA 98201 Project Location West of Lake Washington Blvd N near N 41st St (APN 3224059005) The following exhibits are included with the ERC Report: Exhibit 1: Environmental Review Committee (ERC) Report Exhibit 2: Neighborhood Detail Map Exhibit 3: Flood Hazard Map Exhibit 4: May Creek Trestle Plan Set (9 Sheets) Exhibit 5: Geotechnical Memorandum prepared by Otak, Inc. Exhibit 6: Critical Areas Technical Memorandum (dated February 7, 2018) Exhibit 7: Ecosystem Resources Inventory, Eastside Rail Corridor Regional Trail Master Plan Project prepared by Parametrix (dated May 12, 2015) Exhibit 8: Shoreline Tracking Worksheet Exhibit 9: Certificate of Exemption (dated April 13, 2018) Exhibit 10: Muckleshoot Indian Tribe Fishery Division Comments (dated July 9, 2018) Exhibit 11: Staff Response Letter to Muckleshoot Indian Tribe Fisheries Division (dated July 17, 2018) Exhibit 12: Project On Hold Notice Letter (dated July 17, 2018) Exhibit 13: King County Reponses to Muckleshoot Concerns (dated October 1, 2018) Exhibit 14: Off Hold Letter (dated October 2, 2018) Exhibit 15: Muckleshoot Indian Tribe Fishery Division Additional Comments (dated October 9, 2018) Exhibit 16: Staff Response Letter to Muckleshoot Indian Tribe Fisheries Division (2) (dated October 16, 2018) Exhibit 17: Construction Mitigation Description Exhibit 18: Conditional Use Permit Justification Exhibit 19: Flood Insurance Rate Map Exhibit 20: Notice of Action Taken, Eastside Rail Corridor (ERC) Trail Master Plan (dated August 1, 2017) DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 FNeighborhood Detail MapColored MapMay Creek Trestle Rehabilitation Project Date: 4/27/2018 0 400200 Feet1 in = 200 feet EXHIBIT 2 RECEIVED 06/21/18 cclose PLANNING DIVISION Approximate Project Area Undisturbed Vegetation Areas to be re-seeded Buildings Parcels Property Boundary Legend N 4 3 r d S t N 42nd PlN 41st Pl Lake Washington Bvd NN 4 1 s t S t Wells Ave NDocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 1,128 94 City of Renton Print map Template This map is a user generated static output from an Internet mapping site and is for reference only. Data layers that appear on this map may or may not be accurate, current, or otherwise reliable. None 5/3/2018 Legend 64032 THIS MAP IS NOT TO BE USED FOR NAVIGATION Feet Notes 64 WGS_1984_Web_Mercator_Auxiliary_Sphere Information Technology - GIS RentonMapSupport@Rentonwa.gov Floodway Special Flood Hazard Areas (100 year flood) Streams (Classified) Type S Type F Type Np Type Ns EXHIBIT 3 RECEIVED 06/21/18 cclose PLANNING DIVISION Approximate Project Area City of Renton Flood Hazard Map: May Creek Trestle Rehabilitation Project DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 COVER SHEETC-1Department of Natural Resources andParks - Parks and Recreation DivisionCapital Planning and Development201 S. Jackson St, Suite 700Seattle, Washington 98104Tel (206) 296-4232 | Fax (206) 263-6217FILE #REVISIONCHECKEDDRAWNDATEPROJ #11/20/17RDRD32499EMAY CREEK & RIPLEY LANE TRESTLESEASTSIDE RAIL CORRIDOR, BELLEVUE, WA.KING COUNTY, WACONTRACT NO. E00341E14OF XRHC ENGINEERINGWWW.RHCENGINEERING.COM720 3RD AVE SUITE 1607SEATTLE WA 98104PH:206.623.5984Department Of NaturalResources and ParksERC - MAY CREEK TRESTLEEASTSIDE RAIL CORRIDORParks and RecreationCITY OF RENTONDivisionVICINITY MAPPROJECTLOCATIONMAY CREEKLOCATIONLOCATION MAPDRAWING INDEX19EXHIBIT 4RECEIVED06/21/18 cclosePLANNING DIVISIONDocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 MAY CREEK TRESTLE TESCPLANC-22Department of Natural Resources andParks - Parks and Recreation DivisionCapital Planning and Development201 S. Jackson St, Suite 700Seattle, Washington 98104Tel (206) 296-4232 | Fax (206) 263-6217FILE #REVISIONCHECKEDDRAWNDATEPROJ #8/21/18JLRPD32499EERC - MAY CREEK / RIPLEY LANETRESTLE REHABILITATIONRENTON, WAKING COUNTY, WA, CONTRACT NO. C01234C18OF 1811241 Willows Road NE, Suite 200Redmond, WA 98052425.822.4446www.otak.comRHC ENGINEERINGWWW.RHCENGINEERING.COM720 3RD AVE SUITE 1607SEATTLE WA 98104PH:206.623.5984 SILT FENCE DETAIL SCALE: N.T.S.SEE CITY OF RENTON SURFACE WATER STD. DETAIL 214.00PROVIDE SILT FENCE IN ACCORDANCE WITH CITY OF RENTONSURFACE WATER STANDARD (SWS) DETAIL #214.00.PROVIDE STABILIZED CONSTRUCTION ENTRANCE INACCORDANCE WITH CITY OF RENTON SWS DETAIL #215.10.INSTALL AND MAINTAIN EROSION CONTROL MEASURES INACCORDANCE WITH CITY OF RENTON SWS DETAILS.THE CITY OF RENTON 2017 SURFACE WATER DESIGN MANUAL.AS DIRECTED BY THE CITY OF RENTON.OCT. 1ST - APRIL 30TH, NO SOILS SHALL BE EXPOSED MORE THAN TWO CONSECUTIVE WORKING DAYS. EXPOSED SOILS SHALL BE STABILIZED AT THE END OF THE WORKDAY, PRIOR TO THE WKND, HOLIDAY OR PREDICTED RAIN EVENT. WKLY MAINT. REPORT TO REQUIRE TO BE SUBMITTED TO CITY OF RENTON.WET SEASON EROSION AND CONTROL MEASURES SHALL BE APPLICABLEFROM OCT. 1 - APRIL 30.*WHERE APPROPRIATE SANDBAGS OR AN EQUIVALENTBARRIER SHALL BE CONSTRUCTED BETWEEN THE PROJECTAREA AND THE SURFACE WATER IN ORDER TO ISOLATE THECONSTRUCTION AREA FROM HIGH WATER THAT MIGHTRESULT DUE TO PERCIPITATION.*113171810/11/18CETO10/11/18RECEIVEDClark Close 10/11/2018PLANNING DIVISIONDocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 E-1MAY CREEK TRESTLEEXISTING BRIDGE LAYOUTDepartment of Natural Resources andParks - Parks and Recreation DivisionCapital Planning and Development201 S. Jackson St, Suite 700Seattle, Washington 98104Tel (206) 296-4232 | Fax (206) 263-6217FILE #REVISIONCHECKEDDRAWNDATEPROJ #3/22/18RPDRPD32499EERC - MAY CREEK / RIPLEY LANETRESTLE REHABILITATIONRENTON, WAKING COUNTY, WA, CONTRACT NO. C01234C18OF 18XX% SUBMITTAL - NOT FOR CONSTRUCTION11241 Willows Road NE, Suite 200Redmond, WA 98052425.822.4446www.otak.com4K:\project\32400\32499E\CADD\ACAD\Dwg\32499E-SHEETS - EXISTING.dwg, 3/22/2018 12:59:26 PM, DWG To PDF_No_Merge.pc3 RECEIVED06/21/18 cclosePLANNING DIVISIONDocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 E-2MAY CREEK TRESTLETYPICAL BENT ELEVATIONDepartment of Natural Resources andParks - Parks and Recreation DivisionCapital Planning and Development201 S. Jackson St, Suite 700Seattle, Washington 98104Tel (206) 296-4232 | Fax (206) 263-6217FILE #REVISIONCHECKEDDRAWNDATEPROJ #3/22/18RPDRPD32499EERC - MAY CREEK / RIPLEY LANETRESTLE REHABILITATIONRENTON, WAKING COUNTY, WA, CONTRACT NO. C01234C18OF 18XX% SUBMITTAL - NOT FOR CONSTRUCTION11241 Willows Road NE, Suite 200Redmond, WA 98052425.822.4446www.otak.com5K:\project\32400\32499E\CADD\ACAD\Dwg\32499E-SHEETS - EXISTING.dwg, 3/22/2018 12:59:27 PM, DWG To PDF_No_Merge.pc3 RECEIVED06/21/18 cclosePLANNING DIVISIONDocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 S-1MAY CREEK TRESTLELAYOUTDepartment of Natural Resources andParks - Parks and Recreation DivisionCapital Planning and Development201 S. Jackson St, Suite 700Seattle, Washington 98104Tel (206) 296-4232 | Fax (206) 263-6217FILE #REVISIONCHECKEDDRAWNDATEPROJ #8/21/18RPDRPD32499EERC - MAY CREEK / RIPLEY LANETRESTLE REHABILITATIONRENTON, WAKING COUNTY, WA, CONTRACT NO. C01234C18OF 18XX% SUBMITTAL - NOT FOR CONSTRUCTION11241 Willows Road NE, Suite 200Redmond, WA 98052425.822.4446www.otak.com10RECEIVEDClark Close 09/06/2018PLANNING DIVISIONDocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 S-2MAY CREEK TRESTLE REPAIR AND RETROFIT SEQUENCE1 OF 2Department of Natural Resources andParks - Parks and Recreation DivisionCapital Planning and Development201 S. Jackson St, Suite 700Seattle, Washington 98104Tel (206) 296-4232 | Fax (206) 263-6217FILE #REVISIONCHECKEDDRAWNDATEPROJ #3/22/18RPDRPD32499EERC - MAY CREEK / RIPLEY LANETRESTLE REHABILITATIONRENTON, WAKING COUNTY, WA, CONTRACT NO. C01234C18OF 18XX% SUBMITTAL - NOT FOR CONSTRUCTION11241 Willows Road NE, Suite 200Redmond, WA 98052425.822.4446www.otak.com11K:\project\32400\32499E\CADD\ACAD\Dwg\32499E-SHEETS.dwg, 3/22/2018 2:17:15 PM, DWG To PDF_No_Merge.pc3 RECEIVED06/21/18 cclosePLANNING DIVISIONDocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 S-3MAY CREEK TRESTLEREPAIR AND RETROFIT SEQUENCE2 OF 2Department of Natural Resources andParks - Parks and Recreation DivisionCapital Planning and Development201 S. Jackson St, Suite 700Seattle, Washington 98104Tel (206) 296-4232 | Fax (206) 263-6217FILE #REVISIONCHECKEDDRAWNDATEPROJ #3/22/18RPDRPD32499EERC - MAY CREEK / RIPLEY LANETRESTLE REHABILITATIONRENTON, WAKING COUNTY, WA, CONTRACT NO. C01234C18OF 18XX% SUBMITTAL - NOT FOR CONSTRUCTION11241 Willows Road NE, Suite 200Redmond, WA 98052425.822.4446www.otak.com12K:\project\32400\32499E\CADD\ACAD\Dwg\32499E-SHEETS.dwg, 3/22/2018 2:17:16 PM, DWG To PDF_No_Merge.pc3 RECEIVED06/21/18 cclosePLANNING DIVISIONDocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 S-8PRECAST CONCRETEBRIDGE DECK PANELDETAILSDepartment of Natural Resources andParks - Parks and Recreation DivisionCapital Planning and Development201 S. Jackson St, Suite 700Seattle, Washington 98104Tel (206) 296-4232 | Fax (206) 263-6217FILE #REVISIONCHECKEDDRAWNDATEPROJ #3/22/18RPDRPD32499EERC - MAY CREEK / RIPLEY LANETRESTLE REHABILITATIONRENTON, WAKING COUNTY, WA, CONTRACT NO. C01234C18OF 18XX% SUBMITTAL - NOT FOR CONSTRUCTION11241 Willows Road NE, Suite 200Redmond, WA 98052425.822.4446www.otak.com17K:\project\32400\32499E\CADD\ACAD\Dwg\32499E-SHEETS.dwg, 3/22/2018 2:17:22 PM, DWG To PDF_No_Merge.pc3 RECEIVED06/21/18 cclosePLANNING DIVISIONDocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 S-9BRIDGE RAILING AND FENCEDETAILSDepartment of Natural Resources andParks - Parks and Recreation DivisionCapital Planning and Development201 S. Jackson St, Suite 700Seattle, Washington 98104Tel (206) 296-4232 | Fax (206) 263-6217FILE #REVISIONCHECKEDDRAWNDATEPROJ #3/22/18RPDRPD32499EERC - MAY CREEK / RIPLEY LANETRESTLE REHABILITATIONRENTON, WAKING COUNTY, WA, CONTRACT NO. C01234C18OF 18XX% SUBMITTAL - NOT FOR CONSTRUCTION11241 Willows Road NE, Suite 200Redmond, WA 98052425.822.4446www.otak.com18K:\project\32400\32499E\CADD\ACAD\Dwg\32499E-SHEETS.dwg, 3/22/2018 2:17:24 PM, DWG To PDF_No_Merge.pc3 RECEIVED06/21/18 cclosePLANNING DIVISIONDocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 2731 Wetmore Avenue, Suite 402, Everett, WA 98201  Phone (425) 493-5221 Fax (425) 374-5152 otak.com Geotechnical Memorandum A geotechnical report is not necessary for this project. Below is a summary of the bridge components that interface with the soil and a description of how the design is not dependent on geotechnical investigation.  The existing bridge is founded on timber piles which will not be modified in a way that affects their capacity to support the bridge (e.g. embedment depth or bearing capacity). In addition, loads to the piles will be less than for the previous railroad use.  Existing soils behind the end bents of the bridge consist of granular material originally used to support a railroad. Loads for the trail use are less than the original railroad loading and will not compromise the approach soils.  Rotting timber end walls, which support the approach embankment, will be replaced in kind. The existing timbers have been in place for many decades and the new timbers are expected to meet the design life of the interim trail improvements. Temporary excavation slopes will not exceed the slope of existing stable slopes at the sides of the approach embankment.  Rotting timber wing walls, which support the approach embankment, will be replaced with precast concrete blocks. The concrete blocks will be more stable than the existing condition and will meet the design life of the interim trail improvements. EXHIBIT 5 RECEIVED 06/21/18 cclose PLANNING DIVISION DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 11241 Willows Road, NE, Suite 200, Redmond, WA 98052  Phone (425) 882-4446 Fax (425) 827-9577 otak.com Technical Memorandum To: Chris Erickson, King County Department of Natural Resources and Parks From: Stephanie Modjeski, Wetland Scientist Kevin O’Brien, Senior Ecologist Copies: Bob Doherty, File Date: 2/7/2018 Subject: May Creek and Ripley Lane Critical Areas Update Project No.: 32499.E Introduction King County (County) Department of Natural Resources and Parks (DNRP) is proposing the May Creek and Ripley Lane Trestle Rehabilitation Project. The project intends to repair and retrofit two trestle bridges located in the City of Renton to the east of Lake Washington. The trestles are currently used as recreational pedestrian bridges and are planned to become part of the multi-use Eastside Rail Corridor Regional (ERC) Trail in Renton. The trestles are deteriorated and have defects and are in need of repairs to provide continuous use of the trail system. In addition to repairs and rehabilitation of existing components of the trestle bridges, existing timber railroad ties and steel railroad tracks will be removed, and new decking and railing will be installed. The County has requested a site inspection to verify the presence of critical areas on the subject property. Otak, Inc. Critical areas have been previously identified in the project area in the Ecosystem Resources Inventory— Eastside Rail Corridor Regional Trail Master Plan Project prepared for King County by Parametrix, dated May 12, 2015. Otak biologists conducted a site visit on November 14, 2017 to verify the presence of critical areas as documented in the 2015 ERC report. Critical areas reviewed include wetlands, streams, and habitat conservation areas as regulated by Renton Municipal Code (RMC) Chapter 4-3-050 (Critical Areas Regulations). The project is located in the City of Renton, King County, Washington. The May Creek trestle is located approximately 300 feet north of N. 41st Street, west of Lake Washington Boulevard. The Ripley Lane trestle is located west of and adjacent to Ripley Lane N., west of Interstate 405. The project is located in Sections 32 and 29, Township 24 North, Range 05 East of the Public Land Survey System. Entire Document Available in Laserfiche Submittals Folder EXHIBIT 6 RECEIVED 06/21/18 cclose PLANNING DIVISION DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 ECOSYSTEM RESOURCES INVENTORY EASTSIDE RAIL CORRIDOR REGIONAL TRAIL MASTER PLAN PROJECT 2015-05-12 EXHIBIT 7 Entire DocumentAvailable in Laserfiche Submittals Folder RECEIVED 06/21/18 cclose PLANNING DIVISION DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT 1 K:\project\32400\32499E\ProjectDocs\Permits\Shoreline Exemption\Shoreline Tracking Worksheet.docx Rev: 08/2016 SHORELINE TRACKING WORKSHEET Planning Division 1055 South Grady Way, Renton, WA 98057 Phone: 425-430-7200 | www.rentonwa.gov The City of Renton is required by the Washington State Department of Ecology to track and evaluate the effectiveness of the Shoreline Master Program at achieving no net loss of shoreline ecological functions with respect to shoreline projects. The City will use shoreline development tracking information to prepare a Shoreline Master Program report every eight years to comply with the Shoreline Management Act requirements. SHORELINE STABILIZATION 1. Is there currently a bulkhead on your site?  Yes No; If yes, fill out table below. If no, see “Site Conditions”, Section 2 below. What Type of Materials is Your Bulkhead Made of? Linear Feet of Hard Materials: Linear Feet of Soft Materials: Examples of Types of Bulkheads: Hard (e.g. rocks, wood); Soft (e.g. sand, plants); Combination-soft materials at the water with hard materials further inland, or a combination of hard and soft materials at the water. SITE CONDITIONS 2. List the size (in square feet) and type of all structures (1st floor only) on your property (e.g. 2,000 sq. ft. house, 125 sq. ft. greenhouse). The structures are two trestle bridges spanning 60 linear feet (LF) and 406 LF. The bridges are supported by transverse bents. The May Creek trestle is supported by 5 timber pile bents and the Ripley Lane trestle is supported by 27 timber pile bents. Each bent has 5 round piles per bent that vary in size from 12-14 inches in diameter. Area of combined bents is approximately 150 square feet. 3. List distance (in feet) from the water to the closest point of each structure. List each building separately (e.g. shed, dock, carport). The May Creek trestle is approximately 880 feet from the waters of Lake Washington. The Ripley Lane trestle is approximately 200 feet from the water. Entire DocumentAvailable in Laserfiche Submittals Folder EXHIBIT 8 RECEIVED 06/21/18 cclose PLANNING DIVISION The structure is a 60-foot long trestle bridge, supported by transverse bents. The May Creek trestle is supported by 5 timber pile bents. Each bent has 5 round piles per bent that vary in size from 12-14 inches in diameter. Area of bents is approximately 30 square feet. DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 DEPARTMENTOFCOMMUNITYANDECONOMICDEVELOPMENT“RentonPLANNINGDIVISIONCERTIFICATEOFEXEMPTIONFROMSHORELINESUBSTANTIALDEVELOPMENTDATE:April13,2018PROJECTNUMBER:LUAJ8-000214,SMEPROJECTNAME:MayCreekandRipleyLaneNTrestlesProjectPROJECTMANAGER:ClarkClose,SeniorPlannerOWNER:KingCountyDNRPParksDivisionChrisErickson201SJacksonSt,#700Seattle,WA98104CONTACT:Otak,Inc.StephanieModjeski2731WestmoreAve,#300Everett,WA98201PROJECTLOCATION:EastsideRailCorridorRegional(ERC)TrailatMayCreekandRipleyLaneNPROJECTDESCRIPTION:TheapplicantisrequestingaShorelineExemptiontorepairandretrofittworecreationalpedestriantrestlebridgesthatareplannedtobecomepartofthemulti-useEastsideRailCorridorRegional(ERC)TrailintheKennydalearea.Theprojectsiteareaisapproximately19,880squarefeet.TheMayCreekandRipleyLanetrestlebridgesarelocatedintheResidential-8(R-8)andResidential-lO(R-10)zoningdistricts.TheMayCreektrestleislocatedapproximately300feetnorthofN41stSt(westofLakeWashingtonBlvdN)andtheRipleyLanetrestleislocatedadjacenttoRipleyLnN(westof1-405).TheRipleyLanetrestleislocatedapproximately220feetfromtheshorelineinLakeWashingtonReachB.TheMayCreektrestleislocatedaboveMayCreekandisapproximately840feetfromtheshorelineofLakeWashingtoninMayCreekReachA.Theshorelineusetable,RMC4-3-090E.1requirestheMayCreektrestleportionoftheworktoundergoanadministrativeconditionalusepermitwithintheUrbanConservancyOverlayDistrictforexpansionofexistingover-watertrails.TheshorelinedesignationfortheRipleyLanetrestleisShorelineResidential.Shorelineinthevicinityoftheprojectareaisborderedbysingleandmulti-familyresidences,privatedocks,andbulkheads.TheMayCreektrestlemeasuresroughly60feetlongand13feetwide,andtheRipleyLanetrestleisapproximately406feetlongand14feetwide.BothtrestleshavedefectsanddeteriorationintimberandsteelmembersandtrestlerepairsareneededtoprovidecontinuoususeoftheERCtrailsystem.Workunderthebridgeswouldbelimitedtopersonnelandhandequipmentforrepairofthepilesandrepairofpilecapbeams.Workattheendsofthebridgeswouldincluderemovalofexistingrottentimberwingwallsandendwalls,andgradingforaccesstothetopsofthebridges.Inaddition,existingtimberrailroadtiesandsteelrailroadtrackswouldberemovedandnewdeckingandrailingwouldbeinstalled.Thenewbridgewouldhaveasmallerfootprint,somorelightshouldbeabletopenetratebelow.BMPswouldbeusedwherelargerequipmentisusedanddisturbedareawouldbeseededand/orplantedasrequired.Debrisplatformswouldbeplacedunderthebridgestocatchfallingdebrisandlimitgrounddisturbance.ComponentsremovedfromthetrestlebridgerepairsPage1of3Entire DocumentAvailable in Laserfiche Submittals FolderRECEIVED03/20/2018 cclosePLANNING DIVISIONEXHIBIT 9DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 1 Clark Close From:Karen Walter <KWalter@muckleshoot.nsn.us> Sent:Monday, July 09, 2018 11:52 AM To:Clark Close Subject:King County DNRP, PR18-000304 May Creek Trestle Project, LUA18-000421, Notice of Application/ODNS Clark, We have reviewed the available materials for King County’s May Creek Trestle Project NOA/ODNS referenced above. This project is a component of the larger Eastside Rail Corridor Project. We offer the following comments in the interest of protecting and restoring the Tribe’s treaty-protected fisheries resources: Project Scope The project is proposing to expand the existing trail over May Creek through the repair and retrofit of the May Creek trestles as part of the Eastside Rail Corridor project. As part of this work, some of the existing trestle piles will be repaired including piles in Bent 3 which is located within the OHWM and 100-year floodplain of May Creek. Bents 2 and 4 also appear to be within the OHWM and certainly the 100-year floodplain of May Creek (per the photo available on Map Number R4 and likely within the 100-year floodplain per the photo available on Map Number R4 from the Eastside Rail Corridor Regional Trail Master Plan’s Ecosystem Resources Inventory Report. The trestle piles all appear to be creosote piles. Unfortunately, the project’s limited repair work misses an opportunity to provide significance environmental and salmon habitat benefits by removing the creosote piles from the stream channel and associated floodplain. The retrofitting of the existing bridge will maintain the current degraded environmental condition and may have further impacts if the bridge piles experience scour, which will result in the addition of scour protection, generally in the form of rip-rap which will further degrade salmon habitat. By keeping the pile bents as shown, there is also the potential for any wood from upstream and adjacent streambank sources that threaten the bridge piles will be removed to ensure protection of the bridge and trail. May Creek currently lacks wood and the lack of high quality wood was noted as a reason for continued streambed downcutting and sediment deposition at the mouth (King County; May Creek Basin Action Plan 2001) which has resulted in dredging of the May Creek delta to the detriment of juvenile Chinook and other salmon in Lake Washington. These existing and continued impacts could be avoided if the bridge were replaced with a structure that eliminates piling within the OWHM and floodplain areas of May Creek. If not now, when will this bridge structure be replaced with a more-fish habitat friendly structure? Project impacts The new bridge will have a solid concrete deck surface (see Sheet S-8) which will created 840 square feet of solid surface overwater coverage to May Creek. There is no assessment or consideration that the bridge will create shade conditions such to affect juvenile salmon migration behaviors and potential increases in predation. This is an important consideration because juvenile Chinook are documented in this stretch of May Creek per WDFW’s Salmonscape. We appreciate the opportunity to review this proposal and look forward to the City/applicants’ written responses. We may have further comments subsequently. 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 EXHIBIT 10 DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 July 17, 2018 Karen Walter Muckleshoot Indian Tribe Fisheries Division Habitat Program Phillip Starr Building 39015-A 172nd Ave SE Auburn, WA 98092 SUBJECT: May Creek Trestle Project Comment Response Letter LUA18-000421, ECF, SMC Dear Ms. Walter: Thank you for your initial comments and questions related to the May Creek Trestle Project, dated July 9, 2018, wherein you’ve requested additional information regarding the subject project. More specifically, as it pertains to when the May Creek bridge structure would be replaced with a more fish habitat friendly structure. The City of Renton has placed the project on hold and has asked the applicant to address your questions and comments. A full response to your questions will be forthcoming. Your letter has been included in the official project file and the reviewing official will consider your concerns and requests as part of their review. You have been made a party of record and if you have any additional questions please feel free to contact me at (425) 430-7289. Sincerely, Clark H. Close Senior Planner EXHIBIT 11 DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 July 17, 2018 Stephanie Modjeski Otak, Inc. 2731 Westmore Ave, Ste. #300 Everett, WA 98201 SUBJECT: "On Hold" Notice May Creek Trestle Project, LUA18-000421, ECF, SMC Dear Ms. Modjeski: The Planning Division of the City of Renton accepted the above master application for review on June 25, 2018. During our review, staff has determined that additional information is necessary in order to proceed further. The following information will need to be submitted before October 11, 2018 so that we may continue the review of the above subject application: 1. On July 9, 2018, Karen Walter with the Muckleshoot Indian Tribe Fisheries Division provided agency comments and questions regarding the subject application. These comments and questions have been modified slightly to give you an opportunity to comment on each question. a. The proposed project’s limited repair work misses an opportunity to provide significance environmental and salmon habitat benefits by removing the creosote piles from the stream channel and associated floodplain. The retrofitting of the existing bridge would maintain the current degraded environmental condition and may have further impacts if the bridge piles experience scour, which would result in the addition of scour protection, generally in the form of rip-rap which would further degrade salmon habitat. By keeping the pile bents as shown, there is also the potential for any wood from upstream and adjacent streambank sources that threaten the bridge piles to be removed to ensure protection of the bridge and trail. May Creek currently lacks wood and the lack of high quality wood was noted as a reason for continued streambed downcutting and sediment deposition at the EXHIBIT 12 DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 RECEIVED Clark Close 10/01/2018 PLANNING DIVISION EXHIBIT 13 DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 October 2, 2018 Stephanie Modjeski Otak, Inc. 2731 Westmore Ave, Ste. #300 Everett, WA 98201 SUBJECT: "Off Hold" Notice May Creek Trestle Project, LUA18-000421, ECF, SMC Dear Ms. Modjeski, Thank you for submitting the additional materials requested in the July 17, 2018 on hold letter from the City. Your project has been taken off hold and the City will continue review of the May Creek Trestle Rehabilitation Project. The Shoreline Administrative Conditional Use Permit has been rescheduled for SEPA Environmental Review on October 22, 2018. If you have any questions, please contact me at (425) 430-7289. Sincerely, Clark H. Close Senior Planner cc: Chris Erickson / Owner Karen Walter / Muckleshoot Indian Tribe Fisheries Division EXHIBIT 14 DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 1 Clark Close From:Karen Walter <KWalter@muckleshoot.nsn.us> Sent:Tuesday, October 09, 2018 6:04 PM To:Clark Close Cc:Kyle Wunderlin Subject:RE: King County DNRP, PR18-000304 May Creek Trestle Project, LUA18-000421, Notice of Application/ODNS Attachments:Eastside Rail Corridor Regional Trail Master Plan, Determination of Significance and Request for Comments on Scope of EIS; RE: Eastside Rail Corridor Draft Master Plan and EIS Clark, Thank you for sending us the applicant’s responses to our comments. We have reviewed them and offer additional comments as noted: 1. Trestle replacement We understand that King County Parks did not budget to replace the trestle and repairing it would be cheaper. The response does not adequately address the issues we raised in our comments to the Trail’s Master Plan DS via an email dated July 17, 2015 (attached), which were: “The planning and environmental review documents need to characterize all of the existing stream crossings for fish passage and fish habitat processes to determine if any crossing that is blocking passage for adult and juvenile salmon or adversely affecting fish habitat processes. To address this concern, we recommend that King County complete a water-crossing passage survey that considers the upstream migration of adult and juvenile salmons for all species, as well as, the adequacy of these structures to pass wood, water, and sediment through them, without maintenance. Using the results of this information, then the identified water-crossing structures should be replaced and restored as part of this regional trail construction and implementation. The survey work, results of the survey work and the water-crossing replacement needs should be coordinated closely with us.” To our knowledge this work has never been completed as we recommended and if it was, it was not shared with us. In our May 19, 2016 EIS comments to the trail, we specifically noted that: “As we noted in our previous comments, one of the biggest issues for this project is how it will be crossing streams; the nature of existing crossings (i.e. undersized culverts and bridges); opportunities to remove obstructions and creosote pilings in water (see pages 2-5 and 4-12 showing creosote piles from existing trestles in the water); and the potential to preclude future culvert repair or replacements projects up and downstream of the trail. For example, WSDOT is currently designing road expansion work, including culvert replacements, extensions, etc. along I-405 from Renton to Bellevue. This road project includes several existing fish passage barriers on potential fish bearing streams that need to be made fish passable under the Federal injunction from U.S. v. Washington proceedings (culvert case). See http://www.wsdot.wa.gov/Projects/FishPassage/CourtInjunction.htm The rail corridor as shown on page 2-9 in the Lakefront segment is downstream of I-405 and near the mouths of several existing streams that could support salmon if they had access to them. This project cannot result in any new or continued fish passage barriers. This may occur as a result of the trail location, the retention of existing fish barriers where the trail crosses and the construction of fill and retaining walls. Now is the time for effective planning that deals with these issues instead of later phases or segments that result in the continuation of fish passage barriers without mitigation. Perpetuating these existing impacts by non [sic] touching poorly designed and harmful structures will continue the cumulative effect of habitat degradation. From the information available EXHIBIT 15 DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 2 on pages 6-13 and 6-23, this issue has not been adequately assessed. There likely more than 7 streams (page 6-13) that have the potential to provide habitat for salmon if they were accessible. A list of the known state-owned fish passage barrier culverts with potential habitat upstream near the trail corridor can be found at: http://www.wsdot.wa.gov/NR/rdonlyres/B056189E-6326-40F5-AD2D- B76720B267F6/0/2015FishPassageReport.pdf This revised planning effort should be coordinated closely with the Tribal Fisheries Division to ensure that we concur with the approach, methods, and outcomes, and avoid permitting delays”. We again asked for a larger planning effort to remove and replace crossings, including the creosote trestle. These concerns have largely been ignored to date. The responses rely on in part to the Preliminary Design Report (Otak 2017). We don’t have a copy of this report and we should have received copy for our review since we have expressed concerns with this project and its crossings. Please have the applicant send us this report so we may review it accordingly. 2. Creosote and Water Quality Creosote-infused wood can leach PAH’s and cause adverse impacts to salmon. If this wasn’t the case, then applicants wouldn’t get mitigation credit for removing creosote wood piles, etc. Please see the attached paper from WDFW regarding treated wood and impacts to salmon (https://wdfw.wa.gov/publications/00053/wdfw00053.pdf). 3. Scour concerns- Please have the applicant send us the Otak November 2017 Preliminary Design Report. 4. Woody debris concerns- The applicant’s responses regarding the trestle’s ability to interfere with wood transport is short-sighted. The I-405 crossing of May Creek will be improved and reduce hydraulic restrictions. We are unaware of existing structures that would interfere with the transport of wood upstream of the trestle. If the stream gauge weir is a problem, then it should be modified so that it doesn’t interfere with wood transport. Also, given the forested conditions upstream of the trestle and the City’s intent to keep it that way with the May Creek trail, then it is logical that trees will mature and recruit to May Creek over time. The enhancements to the trestle will extend its design life, thus increasing the chances that trees will end up in the stream and need to be removed, in part because of the trestle’s in-water piers that restrict flows and wood transport. 5. Shading impacts The applicant’s responses ignored the impacts of having a solid structure at this location will create a sharp edge from shading which will likely affect juvenile salmon behaviors and may increase salmon predator habitat. This issue has been studied and is regularly considered for new, replaced and repaired structures when projects undergo environmental review and permitting. WDFW has published two documents on the topic: https://wdfw.wa.gov/publications/00052/wdfw00052.pdf https://wdfw.wa.gov/publications/00995/wdfw00995.pdf In addition, shading impacts to juvenile salmon are noted in the WRIA 8 Synthesis report (see http://www.govlink.org/watersheds/8/pdf/LWGI_SalmonSyn123108.pdf The solid trail structure proposed does not address the concern nor provide any mitigation. We appreciate the opportunity to continue coordination with the City of Renton to address our concerns. Please let me know if you have any questions. Thank you, Karen Walter Watersheds and Land Use Team Leader Muckleshoot Indian Tribe Fisheries Division Habitat Program DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 3 39015-A 172nd Ave SE Auburn, WA 98092 253-876-3116 From: Clark Close [mailto:CClose@Rentonwa.gov] Sent: Tuesday, October 02, 2018 9:59 AM To: Karen Walter Cc: Kyle Wunderlin Subject: FW: King County DNRP, PR18-000304 May Creek Trestle Project, LUA18-000421, Notice of Application/ODNS Karen, Please find attached off hold letter and response letter from KC Parks. Let me know if you have any further questions or comments by October 9, 2018. Thanks, Clark H. Close Senior Planner City of Renton 425-430-7289 DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 1 Clark Close From:Karen Walter <KWalter@muckleshoot.nsn.us> Sent:Friday, July 17, 2015 11:48 AM To:Brown, Kevin Cc:erctrail@kingcounty.gov Subject:Eastside Rail Corridor Regional Trail Master Plan, Determination of Significance and Request for Comments on Scope of EIS Mr. Brown, We have reviewed the Scoping Notice for the proposed Eastside Rail Corridor Regional trail Master Plan. As you know, this trail is proposed for 42 miles along the former “Lake Washington Belt” rail line that stretches from Renton to Snohomish County. Both the Master Plan and the Draft EIS should address the following comments that we offer in the interest of protecting and restoring the Tribe’s treaty-protected fisheries resources: Stream identification and classification The planning and environmental review documents need to identify all potential streams in the entire corridor and classify them using all available known fish use data. The Ecosystems Resources Inventory Report (May 2015) appears to be a good start; however, from our knowledge of the project area, there appears to be streams missing from this inventory. For streams where there is no known fish use data, the streams should be classified using the physical criteria from WAC 222-16-031 and Forest Practices Board Manual 13 which considers natural barriers and potential fish habitat. Stream crossings With the information gathered for all of the project area streams, the planning and environmental review documents need to characterize all of the existing stream crossings for fish passage and fish habitat processes to determine if any crossing that is blocking passage for adult and juvenile salmon or adversely affecting fish habitat processes. To address this concern, we recommend that King County complete a water-crossing passage survey that considers the upstream migration of adult and juvenile salmons for all species, as well as, the adequacy of these structures to pass wood, water, and sediment through them, without maintenance. Using the results of this information, then the identified water-crossing structures should be replaced and restored as part of this regional trail construction and implementation. The survey work, results of the survey work and the water-crossing replacement needs should be coordinated closely with us. Riparian, Wetland and Lakeshore vegetation impacts and mitigation needs The trail construction and operations will likely require the removal of vegetation and/or the permanent preclusion of trees that would other provide riparian functions to streams, wetlands, and lakes in the project area. The trail plan and DEIS need to identify these potential impacts and describe mitigation measures to address impacts to riparian functions. One issue we see routinely with these kinds of projects is the idea that groundcover and shrubs are somehow functional equivalent to trees when they are not. If the trail corridor results in tree removal and the permanent preclusion of trees because of the trail and utility features, then these impacts must be fully mitigated. This discussion and analysis should also include future hazard trees that will likely need to be removed over time. Trail ditch/stream maintenance As we have seen with other regional trails, there are several areas where streams are conveyed through managed ditch systems which require regular maintenance. These areas should be identified as part of the stream classification process identified above and where there will be regular maintenance the plan and DEIS should discuss these actions and how they will be fully mitigated. All of these issues need to be addressed in the planning documents and the DEIS. Where there are actions described as occurring in phases and later dates, a process needs to be identified and set up to ensure there is early and frequent coordination with us to ensure early resolution and avoiding permitting delays. We appreciate the opportunity to review this scoping notice and look forward to reviewing documents that address these issues. If you have any questions, please contact me. Thank you, Karen Walter DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 2 Watersheds and Land Use Team Leader Muckleshoot Indian Tribe Fisheries Division Habitat Program 39015 172nd Ave SE Auburn, WA 98092 253-876-3116 DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 1 Clark Close From:Karen Walter <KWalter@muckleshoot.nsn.us> Sent:Thursday, May 19, 2016 1:47 PM To:'Jacobs, Erica' Cc:'Peterson, Bob'; 'lmurphy@muckleshoot.nsn.us' Subject:RE: Eastside Rail Corridor Draft Master Plan and EIS Erica, Thank you for sending us directly a copy of the Eastside Rail Corridor Draft Master Plan and EIS. In addition to our previous scoping comments (dated July 17, 2015), we offer the following comments in the interest of protecting and restoring the Tribe’s treaty-protected fisheries resources. 1. This project is within the Muckleshoot Tribe’s Usual and Accustomed Fishing Area. The salmon populations in WRIA 8 are in dire straits and fishing opportunities in this Basin are significantly reduced for Muckleshoot Tribal members. There is no discussion about potential impacts to salmon that can affect fishing opportunities in the Master Plan or DEIS. Further, this trail is a new trail that will connect to existing and proposed trails elsewhere in WRIA 8 and beyond adding to cumulative impacts to streams and wetlands by the location and management of these trails. The Eastside Rail Corridor Regional Trail and all of the existing and planned trails (i.e. Lake to Sound; Cedar River; SR 520 trail; Sammamish River trail, etc) anticipated to connect to it need to address the primary fact that the location and existing nature of the rail corridors proposed for trails are often located within streams and wetlands and/or their buffers creating adverse conditions for habitat processes. The railroads filled wetland areas, re-routed streams into ditches and channelized streams, dredged these areas; removed vegetation, and crossed streams using undersized culverts and bridges. These existing conditions should be rectified to the fullest extent possible as part of these trail projects. Just as trail corridors and connections are important for people to use non-motorized means to travel, streams are corridors for salmon that need both quality and quantity habitat throughout to ensure their productivity, distribution, and diversity. From our review of the County’s responses and our experiences with other regional trails in the area, these issues are not fully considered. For example, the DEIS states: “Minimal impacts are expected for the May Creek, Coal Creek, Stream SR6, and Kelsey Creek aquatic habitats because all work would take place on the existing trestles that cross over them”. This approach will not lead to the environmental improvements needed for salmon and their habitats. Once the trails are in and actively used, it is very difficult and nearly impossible to make changes needed to improve salmon habitat conditions. The time to address these concerns is now. 2. As we noted in our previous comments, one of the biggest issues for this project is how it will be crossing streams; the nature of existing crossings (i.e. undersized culverts and bridges); opportunities to remove obstructions and creosote pilings in water (see pages 2-5 and 4-12 showing creosote piles from existing trestles in the water); and the potential to preclude future culvert repair or replacements projects up and downstream of the trail. For example, WSDOT is currently designing road expansion work, including culvert replacements, extensions, etc. along I-405 from Renton to Bellevue. This road project includes several existing fish passage barriers on potential fish bearing streams that need to be made fish passable under the Federal injunction from U.S. v. Washington proceedings (culvert case). See http://www.wsdot.wa.gov/Projects/FishPassage/CourtInjunction.htm The rail corridor as shown on page 2-9 in the Lakefront segment is downstream of I-405 and near the mouths of several existing streams that could support salmon if they had access to them. This project cannot result in any new or continued fish passage barriers. This may occur as a result of the trail location, the retention of existing fish barriers where the trail crosses and the construction of fill and retaining walls. Now is the time for effective planning that deals with these issues instead of later phases or segments that result in the continuation of fish passage barriers without mitigation. Perpetuating these existing impacts by non touching poorly designed and harmful structures will continue the cumulative effect of habitat degradation. From the information available on pages 6-13 and 6-23, this issue has not been adequately assessed. There likely more than 7 streams (page 6- 13) that have the potential to provide habitat for salmon if they were accessible. DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 2 A list of the known state-owned fish passage barrier culverts with potential habitat upstream near the trail corridor can be found at: http://www.wsdot.wa.gov/NR/rdonlyres/B056189E-6326-40F5-AD2D- B76720B267F6/0/2015FishPassageReport.pdf This revised planning effort should be coordinated closely with the Tribal Fisheries Division to ensure that we concur with the approach, methods, and outcomes, and avoid permitting delays. 3. Another issue is the location of the proposed trail segments to streams and wetlands and how these sensitive areas will be avoided and impacts minimized and fully mitigated where impacts are unavoidable. The existing railbed corridor is often located adjacent to streams and wetlands in very close proximity limiting channel migration, wood recruitment, shading, etc. The adjacent buffer areas are typically full of invasive plant species that reduce stream and wetland functions and require mowing to maintain. This regional trail presents an opportunity to reduce some of these impacts and provide mitigation in places where the trail will not be relocated as needed to restore stream, wetland and riparian functions. The project needs to locate all existing mitigation sites near the corridor, as well as, any proposed restoration sites. These mitigation and restoration areas should be avoided by the project so that the mitigation sites are protected and the restoration sites are available for those future actions. An example is the substantial mitigation that WSDOT has done in Yarrow Creek as part of the SR 520 Eastside HOV project. A portion of this project overlaps with the Wilburton segment of the trail. The trail should avoid the mitigation areas from the highway project and provide the opportunity for further stream restoration to provide additional ecological lift. 4. Another important consideration is the extent and location of the rail corridor where the trail will be located with either option. While the trail right-of way is only 100 feet wide, the areas where the trail corridor parallel streams for substantial lengths has reduced riparian functions over large areas. For example, the Valley Segment (North Kirkland and Woodinville) notes that 56 percent of the mainline corridor is adjacent to a wetland or stream and 43 percent of the Spur is adjacent to a wetland or stream. The Master plan is contemplating limitations on restoring native trees and shrubs as described on page 3-22. The location and management of the corridor for the trail and other potential uses (rail) means that these areas will not be restored to provide full riparian functions and should be mitigated to offset impacts to salmon habitat so that there is a net gain from this project and not continued degradation. 5. Artificial lighting also needs to be carefully planned and located to not add further impacts to juvenile salmon seeking to outmigrate where lighting can cause delays and increased predation risk. The Lakefront Segment is an example where the lower Cedar River and adjacent Lake Washington shoreline already creates lighting conditions that adversely affect salmon (see Tabor et al. 2004: The Effect of Light Intensity on Sockeye Fry Migratory Behavior and Predation by Cottids in the Cedar River Washington). These potential impacts are not considered in the master plan on page 3-23. In summary, this project needs to provide for a net gain in salmon habitat and functions and access to these areas. This regional project needs to set the example by providing substantial improvements to salmon habitat not merely providing mitigation for project impacts. We appreciate the opportunity to continue coordination and provide input to King County on this project. Please let me know if you have any questions. Thank you, 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: Jacobs, Erica [mailto:Erica.Jacobs@kingcounty.gov] Sent: Wednesday, April 27, 2016 12:30 PM To: Karen Walter; lmurphy@muckleshoot.nsn.us Cc: Peterson, Bob Subject: Eastside Rail Corridor Draft Master Plan and EIS DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 3 Good afternoon Karen and Laura, I spoke with Bob Peterson and learned that you had not received a copy of our Draft Master Plan and EIS for the Eastside Rail Corridor Regional Trail. I’m sorry to hear they didn’t make it to your attention, our courier receipt, attached, indicates delivery was made to the Muckleshoot Tribal Offices on 2/26 but I apologize if our transmittal did not clearly address the documents to your attention as intended. Today I am sending two hard copies by courier with one addressed to each of you, under the attached cover letter. As noted in the letter, King County values your comments and would like to extend the opportunity for you to provide comments to May 25th. Bob and I would also be happy to meet with you if that would be helpful. Sincerely, Erica Jacobs Project Manager, Eastside Rail Corridor Regional Trail Project King County Parks Department of Natural Resources and Parks 201 South Jackson Street, M.S. KSC-NR-0700 Seattle, WA 98104 e-mail: erica.jacobs@kingcounty.gov phone: 206.477.5539 DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 October 16, 2018 Karen Walter Muckleshoot Indian Tribe Fisheries Division Habitat Program Phillip Starr Building 39015-A 172nd Ave SE Auburn, WA 98092 SUBJECT: May Creek Trestle Project Comment Response Letter (2) LUA18-000421, ECF, SMC Dear Ms. Walter: Thank you for your additional comments and questions related to the May Creek Trestle Project, dated October 9, 2018, wherein you’ve requested additional information regarding the subject project. The City of Renton has asked the applicant to address your questions and comments and a full response to your questions will be forthcoming. Please note that this land use application is for a Shoreline Administrative Conditional Use Permit to convert a former railway to a multi-use regional trail and recreation trails are a supported use under the City’s Shoreline Master Program provided that the use does not degrade the ecological functions or natural character of the shoreline area. Your letter has been included in the official project file and the reviewing official will consider your concerns and requests as part of their review. If you have any additional questions please feel free to contact me at (425) 430-7289. Sincerely, Clark H. Close Senior Planner EXHIBIT 16 DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 2731 Wetmore Avenue, Suite 402, Everett, WA 98201  Phone (425) 493-5221 Fax (425) 374-5152 otak.com Construction Mitigation Description Construction is proposed to begin in July 2018 and end in October 2018. Construction will occur during daylight hours, Monday through Friday. Transportation and access to the project site will be from North 41st Street and Lake Washington Boulevard North. No fill or excavation will take place below the ordinary high water mark of May Creek. All proposed repair and retrofit work will occur to existing trestle structures and no change in the bridge footprint will occur. Cleared areas will be limited to the stabilized construction entrance, access road and wheel wash area. High visibility fencing will be installed to protect existing vegetation. Temporary erosion and sediment control measures (TESC) and appropriate construction best management practices (BMPs) such as silt fencing, will be used during construction to minimize erosion. Potential stormwater runoff from the construction activity will be intercepted by installed erosion control methods. EXHIBIT 17 RECEIVED 06/21/18 cclose PLANNING DIVISION DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 2731 Wetmore Avenue, Suite 402, Everett, WA 98201  Phone (425) 493-5221 Fax (425) 374-5152 otak.com Conditional Use Permit Justification Appropriate Location: The proposed project intends to repair and retrofit an existing trestle bridge, that has deteriorated and is need of repairs to allow for continued use of the bridge as a pedestrian trail and for the future use as a multi-use trail as part of the ERC trail system. Effect on adjacent properties: The project will occur within the same footprint of the existing bridge and will have no effect on adjacent properties. Compatibility: The proposed project is compatible with the existing use of the trestles as a trail system. Parking: No parking will be created or removed as part of this project. Parking does not exist currently, and repair of the trestle will not create an increased need for parking in the project vicinity. Traffic: The project is not anticipated to increase new traffic trips for AM and PM times. There will be no change in roadways or access to the trail system. No long-term impacts to traffic are anticipated as a result of this project. Temporary changes in traffic may occur along Lake Washington Boulevard N and N 41st Street during project construction. The repaired trestle will allow for long-term pedestrian use of the trail. A 6-foot tall chain- link fence will be installed on each side of the walkway as a safety measure. Noise, Light, and Glare: There will be no noise, light, or glare impacts as a result of the project. Landscaping: No trees or woody shrubs will be removed for this project and adjacent vegetated areas will be protected with high visibility fencing during construction. No landscaping is proposed for this project. Two, approximately 200-square foot areas on the north east and south east ends of the bridge will be cleared for an access road/wheel wash area. These areas will be re-seeded with native vegetation after repairs are completed. EXHIBIT 18 RECEIVED 06/21/18 cclose PLANNING DIVISION DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 D D D :::: NOTE: THIS AREA IS SHOWN AS BEINGPROTECTED FROM THE 1-PERCENT-ANNUAL-CHANCE OR GREATER FLOOD HAZARD BY ALEVEE SYSTEM THAT HAS BEEN PROVISIONALLYACCREDITED. OVERTOPPING OR FAILURE OFANY LEVEE SYSTEM IS POSSIBLE. FORADDITIONAL INFORMATION SEETHE"PROVISIONALLY ACCREDITED LEVEE NOTE" INNOTES TO USERS. AVENUERTTUUVSNNM M L I I H HGF FEED STREET 114TH S TRE E T80TH S S STREET AVENUEWA Y ONENE STREET86N N E 29 SUNSETAVENU ECITY OF RENTONSTREET KING COUNTY UNINCOPORATED AREAS530071 7 6Shoreline 6 31 84THSR. 5 E.AV E N U E STREET 23 24TH NENE QPLACE COURTCAMAS10 6 A V E N UEMEADOWZONE 36TH 33RD 2 4 T H P L A C E NMONTEREYPLACE 85THNE 33RD ZONE X STREET STREET STREET P LACEAVENUEAVENUE NEM O N TEREYRAI L ROADK N STREET NE 18TH STREET 9 8 NEBOULEVARD AVENUE NEPARKNED R IV E 16TH STREET 28TH NEBLAINE8 T. 23 N.GPLACE ZONE XE530083 ZONE ROAD PARKAVENUERAILROADP L A C E SE 110TH CITY OF RENTON CAMASWASHI NGT ONMEADOWSTREET 34TH North BoeingBridge N NE AVENUE14THAVENUE N¥k405C SE82N D LAKE WASHINGTON S E DRIVEAVENUEMERCERAVENUE 530088 STREET A V A L ON87THS113TH 7 CITY OF RENTON AVENUES BENOTHO 112TH CITY OF MERCER ISLAND 1 13THBENOTHOSWAY R. 4 E.AVENUEPLACE AVALONSTREET PLACE ZONE X STREET RAINIER STREET85THPLACE 25 88THSER. 5 E.ZONE X 114TH AVESS SSE STREET MONTEREYSTREET COURT530071 76 AVENUE NEShoreline NE NE ZONE 101 Shoreline SE 40TH AVENUE82ND N RAILR OAD NEWCASTLE 116WILLI AM S ACCE SS34TH 28TH SE 13TH PLACE 38THA 32ND NE30 PLACEAVENUE NEZONE AE 31ST STREET UNINCORPORATED AREAS N UNINCORPORATED AREAS CAMASN STREET 20TH 111ZONE P L A CE NOTE: MAP AREA SHOWN ON THIS PANEL IS LOCATEDWITHIN TOWNSHIP 23 NORTH, RANGE 5 EASTAND TOWNSHIP 24 NORTH, RANGE 5 EAST.PARK STREET N BNE61DETAILED STUDY 28TH N NE CITY OF NEWCASTLEXPLACE 30TH 37TH 27TH N S T R E ETSTREET ¥k405 STREET 35TH KING COUNTY A COULONWASHINGTON26 24 L A NE100 PLACE NE AVENUE AVENUE NEN NE118 NAVENUE NESTREET AVENUEPLACE ZONE X N PLACE AVENUEAVENUEPLACE530088 HIGHPCITY OF MERCER ISLAND NLIMIT OF N 36TH 33RD 22 ¥k405 MEADOWROADJONESSTREET STREET ABERDEENJ NRAILROADSY0157 N E 2 9 T H SY0161 N NE 23RD STREET 1 1 2 T H2728TH 38 71 PLACE 12THKING COUNTY68NE 19TH 32ND NCITY OF RENTONPLACE33RD BOEING26TH AVENUE NEBOULEVARDN E ZONE X STREET 42AVENUE NAVENUE NEN E NE110TH 114THNEVIEW56 H O U SER N BLAINEAVENUESEN 2 0 T H ZONE X ZONE X 530134 LINCOLNSTREET KENNEWICK86TH530071 NE AVENUE LAKE WASHINGTON 81 AVENUE117STREET GARDEN46 KING COUNTYNE KENNEWICK32 AB E R D E E N D R IV E 99 KEN N E WIC K 34TH AE N ACCESS 5 T. 24 N. S 91J Cedar River P L A C E NE AE 19 STREET 28TH STREET NECITY OF RENTONN ZONE X NEZONE X 29TH STREET 115TH SZONE X NEMONTEREYSTREET NE 25THAVENUE AVENUEMay Creek PARK NE 40TH STREET STREETAVENUENELINCOLN66 BEACH NSE STREET CAMASLINCOLNZONE XAVENUE 20 STREET 36TH 21 N NNEL AKEAVENUE43RD N E K BURNETT10TH N KENNEWICK AVENUE NES T REET NEMONTE R EY ZONE AE NNESE 87TH AVENUESTREET 405 144 NEBOULEVARD33JONESNLAKE MONTEREYAVALON PLACE ZONE X 30TH 89 X PARKNEBN CITY OF SY0159 A 34PLACEAVENUE NCAMASNEMEADOW1 1 3 T H PARKSE NES T R E E T BLAINE35TH ZONE XN N PL A C E KING COUNTY 27TH 530083 S T R EET 96LINCOLNNN NE MOUNTAINAVENUESTREET RNSUNSE T S U N S ET CITY OF SEATTLE530089 9TH NE 10TH PLACE NECIRCLE LAN ENE NE 9TH PLACE BOULEVARDNE 10TH STREET NE INDE XAVENUE10TH 115TH STREET AVENUE R. 4 E.89THAVENUES116THS 88THS S 116TH STR ABERDEEN AVENUE NEZONE X BRAI NI ERPLACENE 10THSTREET PLACE NE PLACEPLACES 116THR. 5 E.9 THGARDEN757HOUSERLIMIT OF DETAILEDSTUDY LeveeLevee Ñ Ñ Ñ Ñ Ñ Ñ Ñ Ñ Ñ 122° 13' 07.5"47° 31' 52.5" 122° 11' 15" ZONE AE 31 RENTONMUNICIPALAIRPORTPROFILE BASELINE N RIVERSIDE DRIVE 5262000mN . ZONE X 561000mE 7 560000mE 7 559000mE JOINS PANEL 0977 JOINS PANEL 0675 JOINS PANEL 0668JOINS PANEL 06635264000mN . 5263000mN . 7 47° 30' 00" 122° 11' 15"47° 30' 00" 122° 13' 07.5" 47° 31' 52.5" COMMUNITY NUMBER PANEL SUFFIX CONTAINS: (SEE MAP INDEX FOR FIRM PANEL LAYOUT) Federal Emergency Management Agency FLOOD INSURANCE RATE MAPFIRM MAP REPOSITORIESRefer to Map Repositories list on Map Index EFFECTIVE DATE OF COUNTYWIDEFLOOD INSURANCE RATE MAPSeptember 29, 1989 EFFECTIVE DATE(S) OF REVISION(S) TO THIS PANELMay 16, 1995 - to update map format.(Date of Revision) - to change Base Flood Elevations, to update corporate limits, to add roads and road names, to update the effects of wave action, to change Special Flood Hazard Areas, to change zone designations and to incorporate previously issued Letters of Map Revision. For community map revision history prior to countywide mapping, refer to the CommunityMap History table located in the Flood Insurance Study report for this jurisdiction. To determine if flood insurance is available in this community, contact your insurance agentor call the National Flood Insurance Program at 1-800-638-6620. Notice to User: The Map Number shown belowshould be used when placing map orders; theCommunity Number shown above should beused on insurance applications for the subject community. MAP REVISED MAP NUMBER53033C0664G KING COUNTY,WASHINGTONAND INCORPORATED AREAS KING COUNTY 530071 0664 GMERCER ISLAND, CITY OF 530083 0664 G NEWCASTLE, CITY OF 530134 0664 GRENTON, CITY OF 530088 0664 G NFIP NATIONAL FLOOD INSURANCE PROGRAMPANEL 0664G PANEL 664 OF 1700 250 10000FEET 150 3000METERS MAP SCALE 1" = 500'500 150 NOTES TO USERS This map is for use in administering the National Flood Insurance Program. It doesnot necessarily identify all areas subject to flooding, particularly from local drainagesources of small size. The community map repository should be consulted forpossible updated or additional flood hazard information. To obtain more detailed information in areas where Base Flood Elevations (BFEs)and/or floodways have been determined, users are encouraged to consult the FloodProfiles and Floodway Data and/or Summary of Stillwater Elevations tables containedwithin the Flood Insurance Study (FIS) Report that accompanies this FIRM. Usersshould be aware that BFEs shown on the FIRM represent rounded whole-footelevations. These BFEs are intended for flood insurance rating purposes only andshould not be used as the sole source of flood elevation information. Accordingly,flood elevation data presented in the FIS Report should be utilized in conjunction withthe FIRM for purposes of construction and/or floodplain management. Coastal Base Flood Elevations shown on this map apply only landward of 0.0’North American Vertical Datum of 1988 (NAVD 88). Users of this FIRM should beaware that coastal flood elevations are also provided in the Summary of StillwaterElevations table in the Flood Insurance Study Report for this jurisdiction. Elevationsshown in the Summary of Stillwater Elevations table should be used for constructionand/or floodplain management purposes when they are higher than the elevationsshown on this FIRM. Boundaries of the floodways were computed at cross sections and interpolatedbetween cross sections. The floodways were based on hydraulic considerations withregard to requirements of the National Flood Insurance Program. Floodway widthsand other pertinent floodway data are provided in the Flood Insurance Study Reportfor this jurisdiction. Certain areas not in Special Flood Hazard Areas may be protected by flood controlstructures. Refer to Section 2.4 "Flood Protection Measures" of the Flood InsuranceStudy Report for information on flood control structures for this jurisdiction. Provisionally Accredited Levee Notes to Users: Check with your localcommunity to obtain more information, such as the estimated level of protectionprovided (which may exceed the 1-percent-annual-chance level) and EmergencyAction Plan, on the levee system(s) shown as providing protection for areas onthis panel. To maintain accreditation, the levee owner or community is requiredto submit the data and documentation necessary to comply with Section 65.10 ofthe NFIP regulations by November 01, 2018. If the community or owner doesnot provide the necessary data and documentation or if the data anddocumentation provided indicate the levee system does not comply withSection 65.10 requirements, FEMA will revise the flood hazard and riskinformation for this area to reflect de-accreditation of the levee system. Tomitigate flood risk in residual risk areas, property owners and residents areencouraged to consider flood insurance and floodproofing or other protectivemeasures. For more information on flood insurance, interested parties shouldvisit the FEMA Website at http://www.fema.gov/national-flood-insurance-program. The projection used in the preparation of this map was Universal TransverseMercator (UTM) zone 10. The horizontal datum was NAD 83, GRS 1980spheroid. Differences in datum, spheroid, projection or UTM zones used in theproduction of FIRMs for adjacent jurisdictions may result in slight positionaldifferences in map features across jurisdiction boundaries. These differences do notaffect the accuracy of this FIRM. Flood elevations on this map are referenced to the North American Vertical Datum of1988. These flood elevations must be compared to structure and ground elevationsreferenced to the same vertical datum. For information regarding conversionbetween the National Geodetic Vertical Datum of 1929 and the North AmericanVertical Datum of 1988, visit the National Geodetic Survey website athttp://www.ngs.noaa.gov or contact the National Geodetic Survey at the followingaddress: NGS Information ServicesNOAA, N/NGS12National Geodetic SurveySSMC-3, #92021315 East-West HighwaySilver Spring, Maryland 20910-3282(301) 713-3242 To obtain current elevation, description, and/or location information for bench marksshown on this map, please contact the Information Services Branch of the NationalGeodetic Survey at (301) 713- 3242, or visit its website at http://www.ngs.noaa.gov. Base Map information shown on the FIRM was derived from multiplesources. Base map files were provided in digital format by King County GIS, WADNR, WSDOT, and Pierce County GIS. This information was compiled at scales of1:12,000 to 24,000 during the time period of 1994-2012. The profile baselines depicted on this map represent the hydraulic modeling baselines that match the flood profiles in the FIS report. As a result of improved topographic data, the profile baseline, in some cases, may deviate significantly from the channel centerline or appear outside the SFHA. Based on updated topographic information, this map reflects more detailed andup-to-date stream channel configurations and floodplain delineations thanthose shown on the previous FIRM for this jurisdiction. As a result, the FloodProfiles and Floodway Data tables for multiple streams in the FloodInsurance Study Report (which contains authoritative hydraulic data) may reflectstream channel distances that differ from what is shown on the map. Also, the road to floodplain relationships for unrevised streams may differ from what isshown on previous maps. Corporate limits shown on this map are based on the best data available at the timeof publication. Because changes due to annexations or de-annexations may haveoccurred after this map was published, map users should contact appropriatecommunity officials to verify current corporate limit locations. Please refer to the separately printed Map Index for an overview map of thecounty showing the layout of map panels; community map repository addresses;and a Listing of Communities table containing National Flood Insurance Programdates for each community as well as a listing of the panels on which each communityis located. For information on available products associated with this FIRM visit the MapService Center (MSC) website at http://msc.fema.gov. Available products mayinclude previously issued Letters of Map Change, a Flood Insurance Study Report,and/or digital versions of this map. Many of these products can be ordered orobtained directly from the MSC website. If you have questions about this map, how to order products, or the NationalFlood Insurance Program in general, please call the FEMA Map InformationeXchange (FMIX) at 1-877-FEMA-MAP (1-877-336-2627) or visit the FEMAwebsite at http://www.fema.gov/business/nfip. Zone D boundary Floodway boundary 1% Annual Chance Floodplain Boundary 0.2% Annual Chance Floodplain Boundary *Referenced to the North American Vertical Datum of 1988 D !!!!!!!!!!!!!!LEGEND SPECIAL FLOOD HAZARD AREAS (SFHAs) SUBJECT TOINUNDATION BY THE 1% ANNUAL CHANCE FLOOD ZONE A ZONE AE ZONE AH ZONE AO ZONE AR ZONE A99 ZONE V ZONE VE ZONE X FLOODWAY AREAS IN ZONE AE OTHER FLOOD AREAS OTHER AREAS ZONE XZONE D The 1% annual chance flood (100-year flood), also known as the base flood, is the flood that hasa 1% chance of being equaled or exceeded in any given year. The Special Flood Hazard Area isthe area subject to flooding by the 1% annual chance flood. Areas of Special Flood Hazardinclude Zones A, AE, AH, AO, AR, A99, V, and VE. The Base Flood Elevation is the water-surfaceelevation of the 1% annual chance flood. No Base Flood Elevations determined. Base Flood Elevations determined. Flood depths of 1 to 3 feet (usually areas of ponding); Base Flood Elevationsdetermined. Flood depths of 1 to 3 feet (usually sheet flow on sloping terrain); averagedepths determined. For areas of alluvial fan flooding, velocities also determined. Special Flood Hazard Areas formerly protected from the 1% annual chanceflood by a flood control system that was subsequently decertified. ZoneAR indicates that the former flood control system is being restored to provideprotection from the 1% annual chance or greater flood.Area to be protected from 1% annual chance flood by a Federal floodprotection system under construction; no Base Flood Elevations determined. Coastal flood zone with velocity hazard (wave action); no Base Flood Elevationsdetermined. Coastal flood zone with velocity hazard (wave action); Base Flood Elevationsdetermined. The floodway is the channel of a stream plus any adjacent floodplain areas that must be kept free ofencroachment so that the 1% annual chance flood can be carried without substantial increases inflood heights. Areas of 0.2% annual chance flood; areas of 1% annual chance flood withaverage depths of less than 1 foot or with drainage areas less than 1 squaremile; and areas protected by levees from 1% annual chance flood. Areas determined to be outside the 0.2% annual chance floodplain. Areas in which flood hazards are undetermined, but possible. CBRS areas and OPAs are normally located within or adjacent to Special Flood Hazard Areas. CBRS and OPA boundary Boundary dividing Special Flood Hazard Area Zones and boundary dividing Special Flood Hazard Areas of different Base Flood Elevations, flood depths, or flood velocities. Base Flood Elevation value where uniform within zone; elevation infeet* Cross section line Transect line Geographic coordinates referenced to the North American Datum of1983 (NAD 83) Western Hemisphere 1000-meter Universal Transverse Mercator grid values, zone 104989000m N Bench mark (see explanation in Notes to Users section of this FIRMpanel) River Mile Base Flood Elevation line and value; elevation in feet* COASTAL BARRIER RESOURCES SYSTEM (CBRS) AREAS OTHERWISE PROTECTED AREAS (OPAs) 513 (EL 987) 45° 02’ 08”, 93° 02’ 12” DX5510 M1.5 A A 23 23 EXHIBIT 19 RECEIVED Clark Close 09/06/2018 PLANNING DIVISION PRELIMINARY 9/15/2017 DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 EXHIBIT 20DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433 DocuSign Envelope ID: E3081450-E9B3-4CBF-9EAE-C66E3101E433