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ENVIRONMENTAL POLICIES NATURAL WATERCOURSES 3. 4. NATURAL WATERCOURSES SHALL B.E MAINTAINED TO HANDLE STORM WATER RUNOFF. SUBDIVISION REGULATIONS SHALL REQUIRE PROTECTION OF NATURAL WATERCOURSES AS PART OF THE DEVELOPMENT PLAN THROUGH EASEMENTS OR LAND DEDICATION. STORM WATER DISCHARGED INTO PUBLIC BODIES OF WATER AND WATERCOURSES SHALL MEET MINIMUM STANDARDS ESTAB- LISHED BY THE MINNESOTA POLLUTION CONTROL AGENCY. COMPREHENSIVE STORM WATER DRAINAGE PLANS SHALL BE COMPLETED PRIOR TO URBAN DEVELOPMENT OCCURRING WITHIN A WATERSHED. THE PLAN SHALL MAXIMIZE THE USE OF EXISTING WATERCOURSES AND WETLAND AREAS. SLOPES NO STRUCTURE WILL BE ALLOWED ON SLOPES WHICH ARE SUSCEPTIBLE TO SEVERE EROSION (GREATER THAN 18%). THESE SLOPES SHALL BE MAINTAINED IN A NATURAL STATE AND REGULATIONS SHALL REQUIRE MAINTENANCE OF VEGETATIVE COVER TO MINIMIZE EROSION PROBLEMS. OWNERS OF SHORELINE PROPERTY WITH BANKS WHICH EXCEED 18% MUST OBTAIN A PERMIT FROM THE MUNICIPALITY FOR ALL IMPROVEMENTS INCLUDING GRADING, EXCAVATION, LANDSCAPING OR CONSTRUCTION. DEVELOPMENT CONTROLS SHALL BE ADOPTED TO MINIMIZE EROSION AND SLIPPAGE ON SLOPES OF 12 TO 18% THAT ARE SUBJECT TO MODERATE EROSION. CONTROLS WILL REQUIRE REPLACEMENT OF ALL VEGETATIVE COVER ON THESE SLOPES TO MINIMIZE EROSION PROBLEMS. DURING CONSTRUCTION, THE SOIL SHALL BE LEFT BARE FOR THE SHORTEST TIME POSSIBLE. PRECAUTION MUST BE TAKEN TO TRAP SEDIMENT. SHORELINE PROTECTION AND STABILIZATION WILL BE THE INDIVIDUAL PROPERTY OWNERS RESPONSIBILITY. INFORMATION GENERATED FROM THE U.S. CORPS OF ENGINEERS STUDY WILL BE MADE AVAILABLE BY THE CITY TO ASSIST PROPERTY OWNERS WITH BOTH PERMIT APPLICATIONS AND DESIGN ALTERNATIVES FOR THE IMPROVEMENTS. -15-