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CITY OF LAKE ELMO COUNTY OF WASHINGTON STATE OF MINNESOTA ORDINANCE NO. 08-090 AN ORDINANCE AMENDING SECTION 150.277 OF THE LAKE ELMO CITY CODE OF ORDINANCES GOVERNING STORM WATER AND EROSION AND SEDIMENT CONTROL. Section 1. Ordinance 08-090 The City Council of the City of Lake Elmo has adopted Ordinance No. 08-090, which replaces the current sections of the City Code pertaining to Storm Water and Erosion and Sediment Control. The revisions to the Lake Elmo stormwater management ordinance are being proposed to better align the regulation of stormwater management in the city with the new State and Watershed rules and to simplify permitting and compliance requirements with the rules. In compliance with the • Federal Clean Water Act, the Minnesota Pollution Control Agency (MPCA) maintains permitting authority to manage stormwater and improve water quality throughout the state. The MPCA Stormwater Program includes two general stormwater permits that have been reissued on August 1, 2013 to comply 'with changing, federal rules and incorporate changes needed to enhance compliance with the permit. The MPCA issues the Minnesota NPDES/SDS • Construction Stormwater General Permit (R1000001) to protect water resources from contaminants in runoff from construction sites. The MPCA also issues the General NPDES/SDS Permit MNR040000 for Municipal Separate Storm Sewer Systems (MS4s) to regulate stormwater discharge from counties, cities, townships and other government entities in urbanized areas. Through the reissuance of these two permits the MPCA has included new requirements for construction projects and by MS4's for controlling stormwater discharge volume, Total Suspended Solids (TSS) and Phosphorus; which will require increased infiltration of stormwater runoff for new development and redevelopment projects. In addition, the Valley Branch Watershed District (VBWD) is updating their Rules and Regulations to comply with the changes in federal and state rules. Among these changes the VBWD is increasing the volume control design standard to capture and retain on site 1.1 inches of stormwater runoff from the new and/or fully reconstructed impervious surface. This design standard was previously 0.5 inches. Ordinance 08-090 revises Section 150.277 Performance and Design Standards to; • Eliminate the requirement by applicants to prepare and submit for approval by the City a Storm Water Management Plan using stormwater modeling design criteria that is different from the State and/or local Watershed District(s). Instead the Stormwater Management Plan must be submitted to the City, but will be the same Stormwater Management Plan already prepared for watershed district and/or State approvals. Align the stormwater rate control requirements by the city with the rate control requirements of the State and local Watershed(s). • Align the water quality control (volume) requirements by the city with the water quality control (volume) requirements of the State and local Watershed(s).. The full text of Ordinance No. 08- 090 is available for inspection at Lake Elmo city hall during regular business hours. Section 2• Effective Date- This ordinance shall become effective Immediately upon adoption and publication. ADOPTION DATE: Passed by the Lake Elmo City Council on the 15th day of October, 2013. Ayes: 5 Nays: 0 /s/ Mike Pearson, Mayor Attest: /s/ Adam Bell, City Clerk (Oakdale -Lake Elmd:'Oct. 23, 2013)