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b. Describe effects from project activities on water resources and measures to minimize or <br />mitigate the effects below. <br />Wastewater - For each of the following, describe the sources, quantities, and <br />composition of all sanitary, municipal/domestic, and industrial wastewaters <br />projected or treated at the site. <br />1) If the wastewater discharge is to a publicly owned treatment facility, identify <br />any pretreatment measures and the ability of the facility to handle the added <br />water and waste loadings, including any effects on, or required expansion of, <br />municipal wastewater infrastructure. <br />Based on the Metropolitan Council's Sewer Available Charge determination <br />standards for the proposed improvements with the proposed uses (see site <br />plan in Attachment A), the additional wastewater flows are projected to be <br />approximately 179,760 gallons per day (GRID). Wastewater is expected to be <br />equivalent to domestic strength wastewater. In the event a specific user <br />would have wastewater stronger than domestic strength wastewater, a <br />pretreatment facility would be required to be installed. <br />The sanitary sewer service will be provided by the City of Roseville. The existing <br />system currently has the capacity to handle the increase in wastewater <br />generated by this type of development based on coordination and <br />discussions with the Public Works Department. It is connected to one of <br />Metropolitan Council's nine Metropolitan Wastewater Treatment Plants. A <br />sewer line will be stubbed off of the existing sanitary main on -site and provide <br />connections to the proposed additions. The proposed buildings will be <br />connected to this main line. Manholes will be provided every 200 feet to <br />provide access to the main line on the site for serviceability and monitoring. <br />All sanitary sewers are located outside the Minnesota Department of Health <br />(MDH) required setbacks from a well. No on -site wells have been identified; <br />however, if any wells are encountered, they will be properly sealed per the <br />MDH code prior to construction of the proposed development. <br />2) If the wastewater discharge is to a subsurface sewage treatment system <br />(SSTS), describe the system used, the design flow, and suitability of site <br />conditions for such a system. <br />Not applicable. <br />3) If the wastewater discharge is to surface water, identify the wastewater <br />treatment methods, discharge points, and proposed effluent limitations to <br />mitigation impacts. Discuss any effects to surface or groundwater from <br />wastewater discharges. <br />Not applicable. <br />ii. Stormwater - Describe the quantity and quality of stormwater runoff at the site <br />prior to and post construction. Include the routes and receiving water bodies for <br />runoff from the site (major downstream water bodies as well as the immediate <br />receiving waters). Discuss any environmental effects from stormwater discharges. <br />Rosedale Center EAW 8 February 2020 <br />