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HomeMy WebLinkAbout2023-020 Ordinance amending the City of Yakima Municipal Code Section 7.83.100 Design Manuals ORDINANCE NO. 2023-020 AN ORDINANCE amending the City of Yakima Municipal Code Chapter 7.83.100 Design Manuals. WHEREAS, the City of Yakima is required to comply with the State of Washington's Eastern Washington Phase II Municipal Stormwater Permit, hereinafter referred to as "Permit"; and WHEREAS, the City has codified the use of best management practices (BMP) in stormwater management, updates to the Permit require that the City amend the code to require that approved design manuals for BMP must conform with the minimum technical requirements of Appendix 1 of the Eastern Washington Phase II Municipal Stormwater Permit; and WHEREAS, the City Council of the City of Yakima finds that it is in the best interests of the City of Yakima and its residents to amend Yakima Municipal Code 7.83.100 Design Manuals to include the requirement that approved design manuals for stormwater BMP will meet the minimum technical requirements included in Appendix 1 to the Eastern Washington Phase II Municipal Stormwater Permit; now, therefore, BE IT ORDAINED BY THE CITY OF YAKIMA: Section 1. Section 7.83.100 Design Manuals of the City of Yakima Municipal Code is hereby amended to read as follows: 7.83.100 Design manuals (1) The Director will utilize information including the minimum technical requirements of Appendix 1 in the Eastern Washington Phase II Municipal Stormwater Permit, the technical specifications of the latest edition of the Stormwater Management Manual for Eastern Washington approved local equivalent, or another technical stormwater manual approved by Ecology, as the basis for decisions about design, implementation, maintenance, and performance of structural and nonstructural post-construction stormwater BMPs. The Stormwater Management Manual for Eastern Washington, or approved local equivalent, includes a list of acceptable stormwater treatment practices, including specific design criteria for each stormwater practice. Use of BMPs from other technical stormwater manuals approved by Ecology shall be consistent with city climate, soils, and specific site conditions appropriate for said BMP use. Stormwater practices that are designed, constructed, and maintained in accordance with these design and sizing criteria will be presumed to meet the minimum water quality performance standards of the Eastern Washington NPDES Phase II Municipal Stormwater Permit requirements. (2) Use of BMPs not designed, constructed, and maintained in accordance with manuals identified in YMC 7.83.090 shall be subject to city approval and must be monitored for performance to demonstrate that they meet the minimum water quality performance standards of the Eastern Washington NPDES Phase II municipal stormwater permit requirements. (Ord. 2010- 08 § 1 (part), 2010). Section 2. This ordinance shall be in full force and effect 30 days after its passage, approval, and publication as provided by law and by the City Charter. PASSED BY THE CITY COUNCIL, signed and approved this 6th day of June, 2023. _ ( -eja ATTEST: Janice Deccio, Mayor yF.KIMq Y' -k- osalinda Ibarra, City Clerk o Sr AL Publication Date: June 9, 2023 Effective Date: July 9, 2023 Y�'1114'+ BUSINESS OF THE CITY COUNCIL YAKIMA, WASHINGTON AGENDA STATEMENT Item No. 6.M. For Meeting of: June 6, 2023 ITEM TITLE: Ordinance amending the City of Yakima Municipal Code Section 7.83.100 Design Manuals SUBMITTED BY: Scott Schafer, Director of Public Works * Mike Price, Wastewater/Stormwater Manager(509)249-6815 SUMMARY EXPLANATION: The City of Yakima (City) is regulated by the Department of Ecology for stormwater management in accordance with its issued Eastern Washington Phase I I Municipal Stormwater National Pollutant Discharge Elimination System General Permit#WAR046013. The City's Stormwater Division is requesting that Yakima Municipal Code (YMC) 7.83.100 Design Manuals be amended to include the requirement that design manuals approved for stormwater Best Management Practices will meet the minimum technical requirements of Appendix 1 to the Eastern Washington Phase I I Municipal Stormwater Permit. Codifying the amendment to Section 7.83.100 completes an important compliance requirement of the City's permit with the Department of Ecology. ITEM BUDGETED: NA STRATEGIC PRIORITY: Public Safety APPROVED FOR SUBMITTAL BY THE CITY MANAGER RECOMMENDATION: Pass ordinance. ATTACHMENTS: Description Upload Date Type YMC 7.83.100 redline 5/16/2023 Ordinance CI Ordinance YMC 7.83.100 5/16/2023 Ordinance 2 I 7.83.100 Design manuals. (1) The Ddirector will utilize information including the minimum technical requirements of Appendix 1 in the Eastern Washington Phase II Municipal Stormwater Permit,--i-nelud+agthe technical specifications of the latest edition of the Stormwater Management Manual for Eastern Washington_; approved local equivalent, or another technical stormwater manual approved by Ecology, as the basis for decisions about design, implementation, maintenance, and performance of structural and nonstructural post-construction stormwater BMPs. The Stormwater Management Manual for Eastern Washington, or approved local equivalent, includes a list of acceptable stormwater treatment practices, including specific design criteria for each stormwater practice. Use of BMPs from other technical stormwater manuals approved by Ecology shall be consistent with city climate, soils, and specific site conditions appropriate for said BMP use. Stormwater practices that are designed, constructed, and maintained in accordance with these design and sizing criteria will be presumed to meet the minimum water quality performance standards of the Eastern Washington NPDES Phase II Municipal Stormwater Permit requirements. (2) Use of BMPs not designed, constructed, and maintained in accordance with manuals identified in YMC 7.83.090 shall be subject to city approval and must be monitored for performance to demonstrate that they meet the minimum water quality performance standards of the Eastern Washington NPDES Phase II municipal stormwater permit requirements. (Ord. 2010-08 § 1 (part), 2010).