2022-09-13 P & Z Packet - Laserfiche WebLink

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(b) Locations within the same DNR catchment area as the original construction activity. (c) Locations in the next adjacent DNR catchment area up-stream. (d) Locations anywhere within the CityÓs jurisdiction. 2) Off-site treatment projects must involve the creation of new structural stormwater BMPs or the retrofit of existing structural stormwater BMPs, or the use of a properly designed regional structural stormwater BMP. Routine maintenance of structural stormwater BMPs owned or operated by the City cannot be used to meet this requirement. 3)Off-site treatment projects must be completed no later than 24 months after the start of the original construction activity. 4) The applicant may provide payment to the City in lieu of off-site treatment. 157.08157.25. Impaired Waters and Total Maximum Daily Loads. If a site drains to a surface water that has been listed as impaired pursuant to section 303(d) of the federal Clean Water Act more stringent water quality measures will be required. If a Total Maximum Daily Load (TMDL) has been written for the impaired water then all best management practices deemed necessary to comply with the requirements of the TMDL must be implemented. 157.09157.26. Industrial Sites. Certain industrial sites are required to prepare and implement a stormwater pollution prevention plan, and shall file a notice of intent (NOI) under the provisions of the National Pollutant Discharge Elimination System (NPDES) general permit. The stormwater pollution prevention plan requirement applies to both existing and new industrial sites. 157.10. 157.27. Wetlands. Runoff shall not be routed directly to wetlands without first passing through an appropriate settling or approved pre-treatment basin. Said basins must meet engineering standards for volume and flow directed to the basin. (A) A protective buffer strip of natural vegetation at least 15 feet (25 feet is preferred) in width shall surround all wetlands. (B) Wetlands must not be drained, filled, or altered, wholly or partially, unless in compliance with and permitted under the most current rules adopted by the Minnesota Board of Water and Soil Resources in the Wetland Conservation Act (WCA). Wetland replacement must be guided by the following principles in descending order: (1) Avoidance (2) Minimization (3) Mitigation (C) Permits to work in wetlands must be obtained from the local water management organizations, acting as local governmental units (LGU), with respective jurisdiction within the City to administer the WCA. (D) Permanent boundary markers, in the form of signage approved by the City, should be installed prior to final approval of the required clearing and grading plan. 421 |Page