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aALLIANT ENVIRONMENTAL ASSESSMENT WORKSHEET II Robinson Sod Farm PAGE 12 <br />The project is expected to produce domestic wastewater that is typical of a residential <br />development. In the City of Lino Lake's Comprehensive Plan, the City forecasts the future <br />trunk sewers and lift station's necessary to accommodate the future growth within the City. <br />These forecasts are broken out by sewer planning district and this project site is located <br />within Sewer District 2. The project will connect to an existing sanitary sewer line located on <br />Robinson Drive and extend an existing 15" sanitary sewer north through the site and an <br />existing 10" sanitary sewer east through the site. There will be several 8" internal sanitary <br />sewers extending throughout the project site that connect and flow to the main trunk sewer. <br />City Lift Station No. 10 is located downstream of the proposed development. It has a firm <br />capacity of 400 gallons per minute (gpm) and an existing residual capacity of 317 gpm. This <br />lift station is projected to require upsizing prior to full development of the project site. <br />Wastewater will flow through City gravity pipes, lift stations, and force main pipes that will <br />eventually flow to the Metropolitan Council Environmental Services (MCES) Interceptor 8361, <br />located on North Road on the Lino Lakes/Circle Pines boundary. The MCES pipe system and <br />treatment facility was designed with capacity for residential development in this area. <br />The MCES Interceptor 8361 eventually flows to the Metropolitan Wastewater Treatment <br />Plant (MWWTP) in St. Paul. This wastewater plant is located approximately three miles south <br />of downtown St. Paul near Pig's Eye Lake on the Mississippi River. The MWWTP has a <br />capacity to treat 314 million gallons of wastewater per day (MGD) and receives 159 MGD as <br />of February 2022. Metropolitan Council's 2040 Water Resources Policy Plan includes a <br />specific plan to serve the region's projected growth through and beyond 2040. <br />In the MPCA's future wastewater infrastructure needs report from 2020, it identified that the <br />average residential wastewater production is 167 gallons per day (MPCA, 2020). Therefore, it <br />is possible that the development could generate approximately 93,019 gallons of wastewater <br />per day for the PUD concept plan and 118,069 gallons of wastewater per day for the yield <br />plan. <br />Additional wastewater coming from the proposed project has been planned for and is not <br />expected to require the expansion of wastewater treatment infrastructure and will not raise <br />any wastewater treatment capacity concerns. <br />2) If the wastewater discharge is to a subsurface sewage treatment systems (SSTS), describe the <br />system used, the design flow, and suitability of site conditions for such a system. N/A <br />3) If the wastewater discharge is to surface water, identify the wastewater treatment methods <br />and identify discharge points and proposed effluent limitations to mitigate impacts. Discuss <br />any effects to surface or groundwater from wastewater discharges. N/A <br />Stormwater— Describe the quantity and quality of stormwater runoff at the site prior to and post <br />construction. Include the routes and receiving water bodies for runoff from the site (major <br />downstream water bodies as well as the immediate receiving waters). Discuss any environmental <br />effects from storm water discharges. Describe storm water pollution prevention plans including <br />temporary and permanent runoff controls and potential BMP site locations to manage or treat <br />