2024-06-04 P & Z Packet - Laserfiche WebLink

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157.09. 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. 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. 157.11. Maintenance of Stormwater BMPÓs. (A) The design and planning of all stormwater management facilities shall include detailed maintenance and repair procedures to ensure their continued function. These plans will identify the parts or components of a stormwater management facility that need to be maintained and the equipment and skills or training necessary. Provisions for the periodic review and evaluation of the effectiveness of the maintenance program and the need for revisions or additional maintenance procedures shall be included in the plan. (B) All private stormwater BMPs shall be maintained by the owner(s) such that the BMP performs the intended treatment function. Public stormwater BMPs shall be the responsibility of the City in that the City will ensure that the capacity of retention/detention ponds is adequate and will repair or replace storm sewer system components as needed. (C) The applicant must ensure access to all stormwater treatment practices at the site for the purpose of inspection and repair by securing all the maintenance easements needed on a permanent basis. These easements will be recorded with the plan and will remain in effect even with transfer of title to the property. (D) The applicant must execute an easement and an inspection and maintenance agreement binding on all subsequent owners of land served by any on-site stormwater management measure in accordance with the specifications of this ordinance. 157.12-157.14 Reserved 157.15. Alterations to and Use of Public and Private Stormwater Ponds. 417 |Page