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Home My WebLink AboutERC_Applicant Ltr_210525 May 25, 2021 Amanda Pierce City of Renton 1055 S Grady Way Renton, WA 98057 SUBJECT: ENVIRONMENTAL THRESHOLD (SEPA) DETERMINATION Madsen Creek Flood Control Improvement Project, LUA21-000147, ECF, CAE Dear Ms. Pierce: 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. Please refer to the enclosed ERC Report and Decision for more details. Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on June 8, 2021. 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. 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.. 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. 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 reach me at jding@rentonwa.gov or at (425) 430- 6598. For the Environmental Review Committee, Jill Ding Senior Planner Enclosure cc: City of Renton/ Owner DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT SIGNATURES: Martin Pastucha, Administrator Public Works Administrator, Chair Date Anjela Barton, Fire Marshal Renton Regional Fire Authority Date Kelly Beymer, Administrator Community Services Department Date Chip Vincent, Administrator Date Community and Economic Development ENVIRONMENTAL (SEPA) DETERMINATION OF NON-SIGNIFICANCE (DNS) PROJECT NUMBER: PR21-00001 / LUA21-000147, ECF, CAE APPLICANT: Amanda Pierce, City of Renton / 1055 S Grady Way, Renton, WA 98057 PROJECT NAME: Madsen Creek Flood Control Improvement Project PROJECT DESCRIPTION: The applicant is requesting Environmental (SEPA) Review and a Critical Areas Exemption for the Madsen Creek Flood Improvement Project. The proposed project consists of four (4) sites requiring improvements to restore and increase the lower Madsen Creek network flood protection and capacity, as well as provide routine maintenance measures. Site 1 work consists of raising the berm surrounding the sediment basin and adding an emergency spillway that discharges to the high flow bypass channel. Site 2 work consists of widening the high flow bypass channel and removing accumulated sediments, as well as raising the right (east) bank of the upper high flow bypass channel to eliminate the low spot acting as a weir diverting flows to the low flow channel. Site 3 work would raise the elevation of the left (south) bank from the private property (14937 Maple Valley Hwy) through Wonderland Estates to the low flow culvert under SR 169. The banks would be raised through a shallow floodwall and flood control berm. Site 4 work would remove the existing Eco Block wall along the right (north) bank of the low flow channel between the outlet of the SR 169 culvert to the 149th Ave SE culvert entrance and replace it with a flood control berm. In addition to these improvements, the high flow bypass capacity will be increased, and maintenance actions and agreements will be implemented. The project site is mapped with a Type F stream, flood hazard area, seismic hazard area, wetlands, wellhead protection area, zone 2, sensitive slopes, and protected slopes. PROJECT LOCATION: 15711 152nd Ave SE, 14937 Maple Valley HWY (King County Parcel Nos. 2323059021, 2323059118, 2323059020, 2323059070, and 2323059028) 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). This Determination of Non-Significance is issued under WAC 197-11-340. Because other agencies of jurisdiction may be involved, the lead agency will not act on this proposal for fourteen (14) days. Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on June 8, 2021. 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. DATE OF DECISION: May 25, 2021 DocuSign Envelope ID: 2185E4C6-EB4A-445F-8113-20CA6BCAD274 5/25/2021 | 11:40 AM PDT 5/25/2021 | 12:37 PM PDT 5/25/2021 | 11:38 AM PDT 5/25/2021 | 12:19 PM PDT DEPARTMENT OF COMMUNITY & ECONOMIC DEVELOPMENT Planning Division 1055 South Grady Way, 6th Floor | Renton, WA 98057 | 425-430-7200, ext. 2 www.rentonwa.gov OF ENVIRONMENTAL DETERMINATION ISSUANCE OF A DETERMINATION OF NON-SIGNIFICANCE (DNS) POSTED TO NOTIFY INTERESTED PERSONS OF AN ENVIRONMENTAL ACTION DNS: THE CITY OF RENTON ENVIRONMENTAL REVIEW COMMITTEE (ERC) HAS DETERMINED THAT THE PROPOSED ACTION DOES NOT HAVE A SIGNIFICANT ADVERSE IMPACT ON THE ENVIRONMENT. DATE OF NOTICE OF ENVIRONMENTAL DETERMINATION: May 25, 2021 PROJECT NAME/NUMBER: PR21-000001 Madsen Creek Flood Control Improvement Project / LUA21-000147, ECF, CAE PROJECT LOCATION: 15711 152nd Ave SE & 14937 Maple Valley Hwy (APN's 2323059021, 2323059020, 2323059028, 2323059070, 2323059118) APPLICANT/PROJECT CONTACT PERSON: Amanda Pierce, City of Renton / 1055 S Grady Way, Renton, WA 98057 / apierce@rentonwa.gov LOCATION WHERE APPLICATION MAY BE REVIEWED: Applicant documents are available online through the City of Renton Document Center website. See also https://cutt.ly/Ebi2HiA PROJECT DESCRIPTION: The applicant is requesting Environmental (SEPA) Review and a Critical Areas Exemption for the Madsen Creek Flood Improvement Project. The proposed project consists of four (4) sites requiring improvements to restore and increase the lower Madsen Creek network flood protection and capacity, as well as provide routine maintenance measures. Site 1 work consists of raising the berm surrounding the sediment basin and adding an emergency spillway that discharges to the high flow bypass channel. Site 2 work consists of widening the high flow bypass channel and removing accumulated sediments, as well as raising the right (east) bank of the upper high flow bypass channel to eliminate the low spot acting as a weir diverting flows to the low flow channel. Site 3 work would raise the elevation of the left (south) bank from the private property (14937 Maple Valley Hwy) through Wonderland Estates to the low flow culvert under SR 169. The banks would be raised through a shallow floodwall and flood control berm. Site 4 work would remove the existing Eco Block wall along the right (north) bank of the low flow channel between the outlet of the SR 169 culvert to the 149th Ave SE culvert entrance and replace it with a flood control berm. In addition to these improvements, the high flow bypass capacity will be increased, and maintenance actions and agreements will be implemented. The project site is mapped with a Type F stream, flood hazard area, seismic hazard area, wetlands, wellhead protection area, zone 2, sensitive slopes, and protected slopes. Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on June 8, 2021. 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. 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. PUBLIC HEARING: If the Environmental Determination is appealed, a public hearing will be set and all parties notified. NOTICE