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"The Facility has a continuous discharge (SD 001) to the Mississippi River (Class 1C, 2Bdg, 3C, 4A, 4B, 5, 6 water). This is a Class A facility. The Facility is designed to treat an average dry weather design flow of 3.98 million gallons per day (MGD), an average wet weather (AWW) design flow of 4.54 MGD, and a peak hourly wet weather flow of 7.27 MGD. Based on the AWW design flow, the Facility is designed for a five-day carbonaceous biochemical oxygen demand of 203.8 milligrams per liter (mg/L), a total suspended solid of 263.7 mg/L, a total phosphorus of 7.2 mg/L, and a total Kjeldahl nitrogen of 36.0 mg/L. The Facility consists of mechanically cleaned bar screens, an influent Parshall flume, vortex grit removers, two anaerobic selector tanks for phosphorous removal, six extended aeration activated sludge cells in three pairs, three final clarifiers, six effluent sand filters, and UV disinfection. The Facility also adds chlorine for filter maintenance, sulfur dioxide for removal of residual chlorine, and ferric chloride for phosphorous removal. Biosolids treatment consists of four aerated storage tanks (aerobic digesters), which is then processed in a screw press to produce a biosolids cake which is landfill disposed." Construction of new sanitary sewer lines will be required to service the project but no expansions to the City's WWTP are anticipated to be required. Sto=wa ter The quality of existing stormwater runoff from the project is typical of forested land. Stormwater runoff flows from upland areas to lower elevations on site as sheet flow where it generally gets conveyed into the large wetland complex located near the center of the site. This wetland ultimately outlets into Trott Brook. The quality of stormwater runoff from the project post construction will be typical of an urban land use with impervious surfaces and lawn/landscaping generally generating higher concentrations of total suspended solids and total phosphorus. Stormwater runoff is proposed to be conveyed into permanent constructed stormwater treatment infrastructure (e.g. infiltration basins, filtration basins, holding ponds, vegetated swales, etc.) across the site for treatment prior to discharge. Temporary erosion and sediment control best management practices (BMPs) will initially be installed (per the project's SWPPP), maintained/repaired, and amended throughout the construction phases as required to remain compliant with the applicant's NPDES Construction Stormwater Permit. BMPs may include (but are not limited to) silt fence, bio-rolls/filter logs, rock construction entrances, mulch/hydro mulch, and permanent native seeding or turf seeding in appropriate areas. Lea terAppropria Lion No appropriations of surface waters are proposed as part of the Project. Water will be sourced from the City of Elk River's existing public water supply system (PWS #1710004). The City's PWS is currently sourced from eight groundwater wells (MDH #s 255153, 221176, 481794, 537682, 580320, 664852, 694499, and 757624). Construction of new watermains will be required to service the project but no expansions to the City's PWS are anticipated to be required.