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Home My WebLink AboutSR_ERC_Report_LUA25-000099_250527_FinalDEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT Project Location Map SR_ERC_Report_LUA25-000099_250527_Final ENVIRONMENTAL REVIEW COMMITTEE REPORT ERC Meeting Date: May 27, 2025 Project File Number: PR25-000028 Project Name: Oakesdale Ave SW Stormwater System Project Land Use File Number: LUA25-000099, ECF Project Manager: Clark H. Close, Current Planning Manager Owner/Applicant/ Contact: Casey Jeszeck, City of Renton, Public Works Department – Surface Water Utility / 1055 S Grady Way, Renton, WA 98057 Project Location: Oakesdale Ave SW (SR 900 to SW 3rd Pl), Renton, WA 98178 Project Summary: The applicant is requesting Environmental (SEPA) Review to construct a stormwater system improvement project within the right-of-way of Oakesdale Ave SW, between SR 900 and SW 3rd Pl. The approximately 0.25-acre project area is located adjacent to the Residential-8 (R-8) zoning district and designated Residential Medium Density (RMD) in the Comprehensive Plan. The project proposes to install a new 18-inch (18”) stormwater main within the right-of-way to replace aging and deteriorated pipes, improve stormwater conveyance, and enhance maintenance access. One (1) segment of existing pipe crossing private property at 301 Oakesdale Ave SW will be abandoned. All existing collection structures will be connected to the new stormwater main. Additional improvements include sidewalk and curb ramp replacements at the intersection of Oakesdale Ave SW and Sunset Blvd to meet accessibility standards, and a half-street grind and overlay to restore the roadway. Approximately 380 cubic yards (cy) of material would be cut onsite and approximately 330 cy of fill is proposed to be brought into the site. No trees are proposed to be removed. According to City of Renton (COR) Maps, the southwestern portion of the site contains a high seismic hazard area. Site Area: 0.25 acres STAFF RECOMMENDATION: Staff Recommends that the Environmental Review Committee issue a Determination of Non-Significance with Mitigation DNS-M. Docusign Envelope ID: FC390598-2A08-49AE-A3C9-DD1A9376DC08 City of Renton Department of Community & Economic Development Oakesdale Ave SW Stormwater System Project Staff Report to the Environmental Review Committee LUA 25-000099, ECF Report on May 27, 2025 Page 2 of 5 SR_ERC_Report_LUA25-000099_250527_Final ENVIRONMENTAL REVIEW In compliance with RCW 43.21C.240, the following environmental (SEPA) review addresses only those project impacts that are not adequately addressed under existing development standards and environmental regulations. A.Environmental Threshold Recommendation Based on analysis of probable impacts from the proposal, staff recommends that the Responsible Officials: Issue a DNS-M with a 14-day appeal period. B.Mitigation Measures 1.The applicant shall prepare and submit an Inadvertent Discovery Plan (IDP) prior to the start of any ground-disturbing activities. In addition, the applicant shall provide notification to the Duwamish Tribe’s cultural committee prior to the start of construction per the Duwamish Tribe's comments. C.Exhibits Exhibit 1:Environmental Review Committee (ERC) Report Exhibit 2:Site Plan Exhibit 3:Improvements Plan Exhibit 4:Topographic Survey Map Exhibit 5:Neighborhood Detail Map Exhibit 6:Tree Retention and Tree Credit Worksheet Exhibit 7:Technical Information Report, prepared by Jack Witecki (City of Renton, Civil Engineering Intern), dated December 2021 Exhibit 8:SEPA Environmental Checklist Exhibit 9:Construction Mitigation Description Exhibit 10:Project Narrative Exhibit 11:Duwamish Tribe Comments Comment Letter, dated April 29, 2025 Exhibit 12:Staff Response to the Duwamish Tribe’s Comment Letter, dated May 14, 2025 Exhibit 13:King County Metro Comments, dated April 25, 2025 Exhibit 14:Staff Response to the King County Metro, dated May 14, 2025 Exhibit 15:Advisory Notes 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 Docusign Envelope ID: FC390598-2A08-49AE-A3C9-DD1A9376DC08 City of Renton Department of Community & Economic Development Oakesdale Ave SW Stormwater System Project Staff Report to the Environmental Review Committee LUA 25-000099, ECF Report on May 27, 2025 Page 3 of 5 SR_ERC_Report_LUA25-000099_250527_Final occur in conjunction with the proposed development. Staff reviewers have identified that the proposal is likely to have the following probable impacts: 1.Air Impacts: It is anticipated that some temporary air quality impacts could be associated with site work during construction activities. Project development impacts during construction would include exhaust emissions from construction workers’ vehicles, construction vehicles, and other equipment. Temporary increase in fugitive dust due to sediment removal is also anticipated. The increase in dust would be localized and temporary. Dust control would be mitigated through the use of temporary erosion control measures, watering, sweep and wash streets, or other measures to remediate impacts as needed. No increase in long term emissions is anticipated for the stormwater system improvement project given the proposed construction is anticipated to end in October 2025. No further site-specific mitigation for the identified impacts from typical vehicle and construction exhaust is required. Mitigation Measures: None recommended. Nexus: Not applicable. 2.Water a.Storm Water Impacts: The applicant submitted a Technical Information Report (TIR), prepared by Jack Witecki (City of Renton, Civil Engineering Intern), dated December 2021 (Exhibit 7). The Oakesdale Ave SW Storm System Project is designed to enhance stormwater management by replacing aging infrastructure with a new 18-inch (18”) stormwater main, located entirely within the public right-of-way (Exhibit 10). As illustrated in the site layout and supporting visuals (Exhibits 2-5), the project eliminates reliance on a deteriorating and inaccessible private storm system by redirecting flow to a publicly owned and maintained route. The new stormwater conveyance pipe will convey stormwater flows from upstream pipes and ultimately discharge into the Black River riparian forest/wetland. Runoff collection would not be altered or modified by the replacement project. All impacted areas by the construction work would be replaced back to the original or better conditions. According to the TIR, the new pipe system would be designed to contain the 25-year peak flow and the 100-year storm event without overtopping. No changes are proposed to the flow characteristics of the existing conveyance system since the new conveyance system would be collecting and discharging the same flows that were being collected and discharged by the existing pipe. An erosion and sediment control plan (ESC) has been developed for the site in accordance with the current Renton Surface Water Design Manual (RSWDM). The plan includes erosion/sedimentation control features designed to prevent sediment-laden runoff from leaving the site or from adversely affecting critical water resources during construction. The project engineer has developed a stormwater pollution prevention and spill plan. Core requirements one through nine (1-9), as well as the six (6) special requirements, have been discussed in the TIR. The report notes that the project is exempt from all six (6) special requirements and all core requirements except for Core Requirements #1 (Discharge at the Natural Location), #4 (Conveyance System), #5 (Construction Stormwater Pollution Prevention), and #6 (Maintenance and Operations). In addition, the report concludes that the Docusign Envelope ID: FC390598-2A08-49AE-A3C9-DD1A9376DC08 City of Renton Department of Community & Economic Development Oakesdale Ave SW Stormwater System Project Staff Report to the Environmental Review Committee LUA 25-000099, ECF Report on May 27, 2025 Page 4 of 5 SR_ERC_Report_LUA25-000099_250527_Final EPA’s Stormwater Management Model was used for sizing the new stormwater conveyance pipe and best management practices (BMPs) and Good Housekeeping procedures during construction would be employed by the project contractor. Staff concurs with the findings in the TIR. Therefore, it is anticipated that the requirements set forth by the current RSWDM, or a future stormwater manual adopted by the City of Renton, would be sufficient to mitigate stormwater impacts generated by the proposed development and no specific mitigation measures are recommended. Mitigation Measures: None recommended. Nexus: Not Applicable. 3.Environmental Health a.Noise Impacts: Noise impacts would primarily result from the installation of a new stormwater main and associated improvements within the ROW. The construction noise, anticipated from July 2025 to October 2025, 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 eight-thirty (8:30) am to three-thirty (3:30) pm, Monday through Friday, unless otherwise approved by the Development Services Division (Exhibit 9). 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. All noise levels would be required to comply with City of Renton code (Chapter 7, Noise Level Regulations) and Washington Administrative Code (WAC 173-60, Maximum Environmental Noise Levels). The anticipated temporary noise impacts would be those commonly associated with utility construction. No further site-specific mitigation is proposed. Mitigation Measures: None recommended. Nexus: Not applicable. 4.Historic and Cultural Preservation Impacts: The project site is located within the ancestral lands of the Duwamish people. According to the SEPA Environmental Checklist (Exhibit 8), no known cultural or archaeological resources are currently documented on the site. However, the Duwamish Tribal Historic Preservation Office submitted a comment letter (Exhibit 11) identifying the area as culturally significant with a low probability of encountering unknown archaeological deposits. The letter notes that there are approximately 12 place names within a mile of the project area and that the Tribe’s predictive model indicates low risk for encountering cultural resources based on project parameters. The Duwamish Tribe recommends that an Inadvertent Discovery Plan (IDP) be prepared and implemented, particularly if ground disturbance extends below fill or impervious surfaces into native soils. The Tribe also requests notification if archaeological work or monitoring is conducted, and the opportunity to be present during such activities. The Tribe emphasized the importance of preserving native trees, particularly any suspected culturally modified trees (CMTs), which hold cultural significance. While the project does not propose landscaping or permanent lighting, the Tribe requests to be notified if any tree suspected to be culturally modified is identified within the Area of Potential Effects (APE). These recommendations and concerns were acknowledged in the City’s staff response to the Duwamish Tribe (Exhibit 12). As such, staff recommends as a mitigation measure that the applicant prepare and submit an Inadvertent Docusign Envelope ID: FC390598-2A08-49AE-A3C9-DD1A9376DC08 City of Renton Department of Community & Economic Development Oakesdale Ave SW Stormwater System Project Staff Report to the Environmental Review Committee LUA 25-000099, ECF Report on May 27, 2025 Page 5 of 6 SR_ERC_Report_LUA25-000099_250527_Final Discovery Plan (IDP) prior to the start of any ground-disturbing activities. The applicant shall provide notification to Tribes’ cultural committee prior to the start of construction. Mitigation Measures: The applicant shall prepare and submit an Inadvertent Discovery Plan (IDP) prior to the start of any ground-disturbing activities. In addition, the applicant shall provide notification to the Duwamish Tribe’s cultural committee prior to the start of construction per the Duwamish Tribe's comments. Nexus: State Environmental Policy Act (SEPA) Environmental Review; RCW 27.53 Archaeological Sites and Resources; RCW 27.44 Indian Graves and Records; and City of Renton Comprehensive Goals and Policies, LU-AA, LU-44, and LU-45; and Duwamish Tribe Comment, dated April 29, 2025. 5.Transportation Impacts: The Oakesdale Ave SW Storm System Project would temporarily impact transportation infrastructure during construction but would not result in any long-term transportation impacts. Construction activities will occur within the public right-of-way, affecting portions of Oakesdale Ave SW, with potential access disruptions to SR 900 (Sunset Blvd) and SW 3rd Pl. While the project does not involve construction of new transportation facilities, a half street grind and overlay and the replacement of sections of sidewalk, curb, and gutter would be necessary to restore the affected roadway and pedestrian network. The project area is not directly served by transit, but a King County Metro bus stop is located nearby on SR 900. While no permanent transit impacts are expected, temporary disruptions to transit access or routing may occur. The project will not generate new vehicle trips, and no long-term increases in traffic volumes are anticipated following construction (Exhibit 8). King County Metro has provided detailed coordination requirements, including submittal of a Construction Request Form and advance notification if any bus stop, layover, or facility access is affected. These requirements must be met prior to construction. According to the applicant, the selected contractor would be required to prepare traffic control plans, designate a traffic control supervisor, and provide signs and flaggers throughout construction. Coordination with Metro would include completing the Construction Request Form, approved TCPs, submitting permits to Metro’s Construction Coordination Office, and complying with notification timelines. In addition, the selected contractor would be responsible for installing No Parking signage at least 72 hours in advance where required, and notifying affected property owners and agencies, including King County Metro, at least 72 hours before any construction activity that may impact access, parking, or transit service. No further site-specific mitigation is proposed. Mitigation Measures: None recommended. Nexus: Not Applicable. 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 on or before 5:00 p.m. on June 10, 2025. Appeals must be submitted electronically to the City Clerk at cityclerk@rentonwa.gov or delivered to City Hall 1st floor Lobby Hub Monday through Friday. The appeal fee, normally due at the time an appeal is submitted, will be collected at a future date if your appeal Docusign Envelope ID: FC390598-2A08-49AE-A3C9-DD1A9376DC08 City of Renton Department of Community & Economic Development Oakesdale Ave SW Stormwater System Project Staff Report to the Environmental Review Committee LUA 25-000099, ECF Report on May 27, 2025 Page 6 of 6 SR_ERC_Report_LUA25-000099_250527_Final is submitted electronically. The appeal submitted in person may be paid on the first floor in our Finance Department. Appeals to the Hearing Examiner are governed by RMC 4-8-110 and additional information regarding the appeal process may be obtained from the City Clerk’s Office, cityclerk@rentonwa.gov. Docusign Envelope ID: FC390598-2A08-49AE-A3C9-DD1A9376DC08 CITY OF RENTON DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT STAFF REPORT TO THE ENVIRONMENTAL REVIEW COMMITTEE EXHIBITS Project Name: Oakesdale Ave SW Stormwater System Project Land Use File Number: LUA25-000099, ECF Date of Meeting May 27, 2025 Staff Contact Clark H. Close Current Planning Manager Project Contact Casey Jeszeck 1055 S Grady Way Renton, WA 98057 Project Location Oakesdale Ave SW (SR 900 to SW 3rd Pl), Renton, WA 98178 The following exhibits are included with the ERC Report: Exhibit 1:Environmental Review Committee (ERC) Report Exhibit 2:Site Plan Exhibit 3:Improvements Plan Exhibit 4:Topographic Survey Map Exhibit 5:Neighborhood Detail Map Exhibit 6:Tree Retention and Tree Credit Worksheet Exhibit 7:Technical Information Report, prepared by Jack Witecki (City of Renton, Civil Engineering Intern), dated December 2021 Exhibit 8:SEPA Environmental Checklist Exhibit 9:Construction Mitigation Description Exhibit 10:Project Narrative Exhibit 11:Duwamish Tribe Comments Comment Letter, dated April 29, 2025 Exhibit 12:Staff Response to the Duwamish Tribe’s Comment Letter, dated May 14, 2025 Exhibit 13:King County Metro Comments, dated April 25, 2025 Exhibit 14:Staff Response to the King County Metro, dated May 14, 2025 Exhibit 15:Advisory Notes Docusign Envelope ID: FC390598-2A08-49AE-A3C9-DD1A9376DC08