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Home My WebLink AboutD_SME_BRPS_200429_v1PLANNING DIVISION CERTIFICATE OF EXEMPTION FROM SHORELINE SUBSTANTIAL DEVELOPMENT DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT DATE: PROJECT NUMBER: PROJECT NAME: PROJECT MANAGER:Clark Close, Senior Planner LUA20-000095, SME OWNER: APPLICANT:King County Water & Land Resources Division Tom Bean 201 S Jackson St, Suite 600 Seattle, WA 98104 CONTACT:Herrera Environmental Consultants, Inc. George Ritchotte 2200 Sixth Ave, Suite 1100 Seattle, WA 98121 PROJECT LOCATION: PROJECT DESCRIPTION: Page 1 of 3 Black River Pump Station Supplemental Geotechnical Explorations King County WLRD RFMS Tom Bean 201 S Jackson St, Suite 600 Seattle, WA 98104 550 Monster Rd SW, Renton, WA 98057 April 29, 2020 The applicant, King County Department of Natural Resources and Parks, Water and Land Resources Division, River and Floodplain Management Section, is requesting a Shoreline Exemption for supplemental geotechnical exploration at the Black River Pump Station (BRPS), which would be classified as research and site investigative work. BRPS is located at 550 Monster Road SW (APNs 3779200090 and 7229500281) in the Resource Conservation (RC) zoning district. The 6.46 acre site is located within a high seismic hazard area, a 100-year flood hazard area (FEMA Zone – AE), and the Natural Environment Overlay District within Reach A of the Black River/Springbrook Creek (BRSC-A). The existing BRPS is a surface water pump station that lifts all flow from the Springbrook Creek system to the level of the Green/Duwamish River in the remaining Black River channel. The pump station is a part of the Green River levee system that protects the City of Renton and surrounding area from flood damage. The pump station has not had many improvements since its construction in 1972, and extensive renovations are needed. Future proposed facility project work, that would be permitted separately, includes ground improvements to the pump house foundation and abutments, structural upgrades, mechanical systems upgrade and refurbishment, control building replacement, upgrades to the fish exclusion and passage system, and engine replacements. Geotechnical explorations would be used to inform future work. The supplemental geotechnical explorations would involve conducting up to 24 subsurface geotechnical borings in the proximity of the existing pump house. These include up to nine over-water geotechnical explorations upstream and downstream of the existing pump house; up to eight geotechnical explorations within pump bays below the existing pump house; and up to seven land-based geotechnical explorations conducted in uplands. Explorations occurring under the pump house would be conducted from the pump house operating level using a drill string (drill pipe column DocuSign Envelope ID: 3518B13B-8A6A-4D57-8589-B86EC09F732F City of Renton Department of Community & Economic Development Certificate of Exemption from Shoreline Substantial Development Black River Pump Station Supplemental Geotechnical Explorations LUA20-000095, SME SEC-TWN-R: SW13 - 23 - 4 LEGAL DESCRIPTION: (King County Assessor) SEC-TWN-R: SW13 - 23 - 4 LEGAL DESCRIPTION: (King County Assessor) WATER BODY/REACH: Approved on the proposed project in accordance with RMC 4.9.190C 'Exemption from Permit System' and for the following reasons: Activities Necessary for Permit Application: Site exploration and investigation activities that are prerequisites to preparation of an application for development authorization under the Shoreline Master Program. Page 2 of 3 EXEMPTION JUSTIFICATION: An exemption from a Shoreline Management Substantial Development Permit is hereby JUNCTION ADD POR TRS 21-22-23-24 & 25A & POR TRS 26 & 29 RENTON SHORELANDS 2ND SUPL ADD BEG SW COR SEC 13-23-04 TH E 1271.74 FT TH N TAP ON BDRY LN BET TRS 28 & 29 OF SD RENTON SHORELANDS 2ND SUPL ADD & TPOB TH CONTG N 275 FT TH W 280.69 FT TH S 59-53-47 W 377.52 FT TH S 74-13-19 W TO ELY MGN OF CO RD TH SELY ALG SD ELY MGN TO SLY BDRY OF SD TR 29 TH ELY ALG SD SLY BDRY TO TPOB ALSO BEG TPOB ABOVE DESC TH N 250 FT TH ON TANGENT CURVE TO RGT RAD OF 627.46 FT TAP ON BDRY LN BEG TRS 26 & 27 OF SD RENTON SH LDS 2ND SUPL ADD TH SWLY ALG SD BDRY LN TO BEG LESS PORTION FOR CO ROAD LESS POR FOR RD PERREC#9704291916 RENTON SHORELANDS 2ND SUPL POR OF TR 28 ALL 30 & POR GL 6 IN SEC 13-23-04 DAF BEG S 87-26-48 E 1271.74 FT E OF SW COR TH N TO NLY MGN CO RD & TPOB TH N TO NLY LN TR 28 TH SWLY ALG NLY LN OF TRS 28 & 30-31 TO ELY MGN CO RD TH SELY & ELY ALG SD RD TO TPOB LESS PORTION FOR TRACT 31 LESS PORTION FOR CO ROAD LESS POR FOR RD PERREC#9704291916 that transmits drilling fluid and torque to the drill bit), which would be lowered through the pump bay. Four upstream borings in the forebay and three downstream boring in the tailrace would be drilled using equipment mounted to the anchored barge. The barge would be placed in the river with a crane to avoid impacts to the shoreline and buffer vegetation. The crane would be staged in the developed fenced area on the south side of the pump station and/or in the access road to the north. If feasible, stoplogs may be installed in pump house bays for dewatering to allow coring and installation of casing. Equipment access has been designed to avoid all potential impacts to wetlands and to minimize adverse impacts to stream and wetland buffers. No trees will be removed for the project and impacts to the Black River would be minor and temporary. The project would use best management practices (BMPs) to minimize potential for elevated turbidity in the river and damage to riparian vegetation. The drilling is anticipated to begin in May 2020. On November 5, 2018, the City of Renton issued a Shoreline Exemption and Critical Areas Exemption for geotechnical explorations at the BRPS (LUA18-000656). On March 26, 2020, King County determined that this project is categorically exempt from State Environmental Policy Act (SEPA) under WAC 197-11-800 subsection 17 Information Collection and Research. On April 1, 2020, The Washington Department of Fish & Wildlife issued a Hydraulic Project Approval (HPA) for the proposed project. DocuSign Envelope ID: 3518B13B-8A6A-4D57-8589-B86EC09F732F City of Renton Department of Community & Economic Development Certificate of Exemption from Shoreline Substantial Development Black River Pump Station Supplemental Geotechnical Explorations LUA20-000095, SME The proposed development is: Consistent with the policies of the Shoreline Management Act. Not Applicable to the guidelines of the Department of Ecology where no Master Program has been finally approved or adopted by the Department. Consistent with the City of Renton Shoreline Master Program. SIGNATURE & DATE OF DECISION: DateJennifer Henning Page 3 of 3 RECONSIDERATION: Within 14 days of the decision date, any party may request that the decision be reopened by the approval body. The approval body may modify his decision if material evidence not readily discoverable prior to the original decision is found or if he finds there was misrepresentation of fact. After review of the reconsideration request, if the approval body finds sufficient evidence to amend the original decision, there will be no further extension of the appeal period. Any person wishing to take further action must file a formal appeal within the 14-day appeal time frame. APPEALS: This administrative land use decision will become final if not appealed in writing to the Hearing Examiner on or before 5:00 PM on May 13, 2020. An appeal of the decision must be filed within the 14-day appeal period (RCW 43.21.C.075(3); WAC 197-11-680). Due to Governor Jay Inslee’s Proclamation 20-25 (“Stay Home, Stay Healthy”), the City Clerk’s Office is working remotely. For that reason, appeals must be submitted electronically to the City Clerk at cityclerk@rentonwa.gov. The appeal fee, normally due at the time an appeal is submitted, will be collected at a future date. 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. If the situation changes such that the City Clerk’s Office is open when you file your appeal, you have the option of filing the appeal in person. EXPIRATION: Two (2) years from the date of decision (date signed). cc: Herrera Environmental Consultants, Riley Plumb / Contact Attachments: Neighborhood Detail Map, Detail Plans, KC SEPA Categorical Exemption DocuSign Envelope ID: 3518B13B-8A6A-4D57-8589-B86EC09F732F 4/29/2020 | 11:37 AM PDT BNSF RAILWAYB la c k R iv e r MONSTERRDSW 0 200 400100Feet K:\Projects\Y2017\17-06618-000\Project\Report\Figure1_BlackPump_SiteMap.mxd Figure 1: Shoreline Exemption Application Neighborhood Detail Map for the Black River Pump Station, Renton, Washington. E Citation Legend Focus Area Parcel Stream Railroad Highway UV900 RentonTukwila G reenR iver DuwamishRive rRECEIVED Clark Close 04/21/2020 PLANNING DIVISION DocuSign Envelope ID: 3518B13B-8A6A-4D57-8589-B86EC09F732F BLACK RIVER PUMP STATION IMPROVEMENTS SUPPLEMENTAL GEOTECHNICAL EXPLORATIONS Figure 2. Proposed land-based geotechnical exploration locations. RECEIVED Clark Close 04/21/2020 PLANNING DIVISION DocuSign Envelope ID: 3518B13B-8A6A-4D57-8589-B86EC09F732F BLACK RIVER PUMP STATION IMPROVEMENTS SUPPLEMENTAL GEOTECHNICAL EXPLORATIONS Figure 3. Proposed limited access and over-water geotechnical exploration locations. DocuSign Envelope ID: 3518B13B-8A6A-4D57-8589-B86EC09F732F Water and Land Resources Division Department of Natural Resources and Parks King Street Center 201 South Jackson Street, Suite 600 Seattle, WA 98104-3855 206-477-4800 Fax 206-296-0192 TTY Relay: 711 March 18, 2020 FM: TO: RE: Josh Baldi, Division Director, Water and Land Resources Division File SEPA Categorical Exemption – Black River Pump Station Geotechnical Explorations Project Name: Black River Pump Station Supplemental Geotechnical Explorations Project Number: 1129574 WLFL8 BRPS High Use Engines Project Location The proposed project is located at 550 Monster Road Southwest in the City of Renton, Washington in the SW quadrant of Section 13, Township 23 north, and Range 4 east. Project Description The Black River Pump Station (BRPS) consists of a concrete dam that spans the Black River channel, with eight flood control pumps to convey flow from the forebay upstream (east) of the dam to the tailrace downstream (west). The pump station has not had many improvements since its construction in 1972, and extensive renovations are needed. Future proposed facility project work, that will be permitted separately, includes ground improvements to the pump house foundation and abutments, structural upgrades, mechanical systems upgrade and refurbishment, control building replacement, upgrades to the fish exclusion and passage system, and engine replacements. Geotechnical explorations expected to be completed in 2020 will inform that work. The supplemental geotechnical explorations will involve conducting up to 24 subsurface geotechnical borings in the proximity of the existing pump house. These include up to nine over- water geotechnical explorations upstream and downstream of the existing pump house; up to eight geotechnical explorations within pump bays below the existing pump house; and up to seven land-based geotechnical explorations conducted in uplands. The project limits are completely within King County tax parcels 3779200090 and 7229500281 and will not impact private property. No trees will be removed for the project and impacts to the Black River will be minor and temporary. The project will use best management practices RECEIVED Clark Close 04/21/2020 PLANNING DIVISION DocuSign Envelope ID: 3518B13B-8A6A-4D57-8589-B86EC09F732F (BMPs) to minimize potential for elevated turbidity in the river and damage to riparian vegetation. Regulatory approvals and permits anticipated include federal and Washington State project authorizations according to Sections 404 and 401 of the Clean Water Act and compliance with WAC 77.55.021 for a Hydraulic Project Approval (HPA). Because the supplemental geotechnical explorations will not involve large amounts of fill or disturbance to waters of the United States, it is anticipated that the BRPS improvement projects will qualify for a Nationwide Permit 6, which has been certified by Ecology. The project is also anticipated to qualify for a Shoreline permit exemption per the exemptions for site investigative work described in the draft Renton Shoreline master Plan code (RMC 4-3-050C(3)) and WAC 173-27-040(2)m. SEPA Exemption King County determined that this project is categorically exempt from State Environmental Policy Act (SEPA) under WAC 197-11-800 subsection 17 Information Collection and Research. Determination Completed on by: Title Signature Division Director March 26, 2020 DocuSign Envelope ID: 3518B13B-8A6A-4D57-8589-B86EC09F732F