06-15-2009 Planning Commission Packet

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4.2.2.3 � Additional Stormwater Treatment Needs 1'his rates the sustainability of the wetland with regard to stormwater discharges to the wetland. The need for additional stormwater treatment prior to discharge to the wetland is rated based on the overall rating for Maintenance of Wetland Water Quality. If a wetland is severely degraded by stormwater inputs, the rating will be low, since a diverse, high quality wetland will not be sustainable. 4.3 Critical Wetland Resources Wetlands in the District were evaluated for designation as critical resources based on several features � defined in Minnesota Statutes. These critical wetland resources should classified into a preservation management class due to their special functions. Criteria for designating wetlands as critical resources are as follows: • Outstanding Resource Value Waters (Minn. Rules 7050.0180) • Designated Scientific and Natural Areas (Minn. Rules 86A.05) • Wetlands with lmown occurrences of Threatened or Endangered Species (Minn. Stat. 84.0895) • State Wildlife Management Areas (Minn. Stat. 86A.05, subpart 8) • • State Aquatic Management Areas (Minn. Stat. 86A.05, subpart 14). • Calcareous fens (MN Rules 8420.1010 through 8420.1060). " • High priority areas for wetland preservation; enhancement, restoration and establishment (MN Rules 8420.0350, subpart 2). • Designated Historic or Archaeological Sites 4.3.1 Outstanding Resource Value Waters "Outstanding resource value waters" are defined in MN Rules 7050.0180 as waters within the Boundary Waters Canoe Area Wilderness; Voyageur's National Park; and Department of Natural Resources designated scientifia and natural areas; wild, scenic, and recreational river segments; Lake Superior; those portions of the Mississippi River from Lake Itasca to the southerly boundary of \\fred\wp�23\27�D06\Reports�Final Report\Wetland_mgmt�lan dft011503.doc 4-17