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11.WATERRESOURCES Potential impacts and mitigation measures are the same under bot Potential Impacts Regional wastewater collection and treatment facilities and muni Area have sufficient long-term capacity to handle the additional Zoning and Maximum Development Scenarios. Sanitary sewer will need to be extended into the Study Area to p Temporary dewatering may be required during project construction constructed with lower levels, for which caissons could be used d foundations. All water pumped during construction dewatering activities will Watershed, and Minnesota Department of Natural Resources (DNR) r Pollutant Discharge Elimination System (NPDES) permit and site R Up to 14.4 acres of wetland may be impacted by development. Wetlshould be avoided where preservation of wetland is feasible. A new crossing of Rice Creek would be required for site access. Mitigation Strategies The use of a small lift station may be required depending on fut will primarily be gravity-based. Stormwater will be managed on-site, maintaining the current drai outfalls to Rice Creek and Round Lake. Stormwater will be conveyed to Round Lake and Rice Creek by mean vegetated swales, and wetlands. Conveyance systems will be desig industry standards and in conformance with jurisdictional requir The runoff rate will be reduced to 80% of the existing rate beca Management Zone as defined by the RCWD. The primary method of stormwater treatment will be the use of mu phosphorous and total suspended solids. Water reuse, bio-filtrat also suitable for treatment within the Study Area. No discharge water will be directed to surface waters without pr and a determination that no contamination exists. The developer contaminated as a basis for determining discharge to storm sewer process such as the existing groundwater treatment facilities. T require a Temporary Water Appropriations General Permit 1997-000 and less than one year in duration. Wetland impacts will be replaced at a 2:1 ratio, through a combi through plans/permit approved by the RCWD and Army Corps of Engi The crossing would be via a bridge that spans the creek, wetland cross underneath. A trail crossing at this location may also be bridge will be designed to avoid impact on the floodplain. How Mitigation will be Applied and Assured Water resources mitigation will be regulated through the RCWD, A processes. Other water resource mitigation will be regulated thrA review process. Proposed PUD and/or site plans must address relevant mitigation measures April 2014 Draft 3