08-25-25 - City Council Agenda - Laserfiche WebLink

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" " " " " """" "" " " """"" " "" " " " " " " " Xä " " " " " " " " "" " " " " " " " " " " "" " " " " " " " " " " " "Xä 2J 2I 2A 2B 2E ¯1 inch = 600 feet 0 600 FeetMain Street Master Plan City of Lino Lakes, MN Sanitary Sewer " " " " """" "" " " """"" " "" " " " " " " " ä " " " " " " " "" " " " """"" " " "" " " " " " " " " " " " "ä 2I 2A 2B 2E 600 Feet ProSoseG *raYity Main 10 1 1 1 ProSoseG ForcePain Xä ProSoseG Lift Station *raYity Main 10 1 1 1 1 ForcePain Xä Lift Station !(MC(S FloZ Meter SXE'istrict %oXnGary City %oXnGary SCENARIO 2 - UTILITIES SANITARY SEWER The City’s sanitary sewer collection system will be extended to serve the study area through a combination of 1) gravity sewer extensions from the existing sanitary sewer system, and 2) a new trunk sewer, lift station, and forcemain referred to as the West Side Relief Sewer in the City’s 2040 Comprehensive Plan. The existing trunk sewer serving sanitary sewer district 2 is nearing its capacity. Therefore, the West Side Relief Sewer is needed to free up capacity by diverting existing sewers in sub-district 2E and to serve new development in the study area. The West Side Relief Sewer will be extended from Met Council Interceptor 8361 located on North Road to the north tKrRXJK VXEGiVtriFtV 2) 2E 2I anG ÀnaOOy 2J A SreOiPinary conceptual layout for the West Side Relief Sewer was outlined in the City’s 2040 Comprehensive Plan Figure 8-5 with a combination of 21-inch trunk gravity sewer and a trunk lift station and forcemain along the western edge of the City. Main Street and the wetlands bordering it in the Gateway Village scenario form a natural boundary for gravity service within the study area. The area south of Main Street can connect to existing sewers by gravity. As shown on tKe Sanitary Sewer ÀJXre tKe e[iVtinJ Vanitary VewerV in the vicinity of the study area include a 15-inch diameter polyvinyl chloride (PVC) sanitary sewer along Century Trail, 12-inch PVC sanitary sewer along Robinson Drive, and 10-inch PVC sanitary sewer in Cardinal Way. A sewer stub extends to the north from the manhole at the intersection of Robinson Drive and Century Trail with an invert of 879.78. There is also a sanitary manhole at the north end of Cardinal Way with an invert of 883.18. Inverts are according to record plans for the Century Farms North development. 7Ke Sanitary Sewer 'iVtriFt ÀJXre VKRwV XSGateG VXEGiVtriFt boundaries based on the Gateway Village scenario. The area north of Main Street will be served by a new lift station. The sub-district 2J lift station will need an ultimate capacity of 1,000 gallons per minute (gpm) with either one 12-inch diameter forcemain or dual 8-inch diameter forcemains along Sunset Avenue (CSAH 53). The dual forcemains would allow the phasing of pumps and piping from 500 gpm to 1,000 gpm if desired depending on the pace of development. Trunk sewers ranging in size from 10-inch to 15-inch diameter will extend northeast of the sub-district 2J lift station to serve the area north of Main Street. The far northeast corner of the study area may discharge to other inFK VewerV tR tKe eaVt GeSenGinJ Rn reOatiYe ÀnaO inYert elevations. All proposed units will be required to connect to the City’s sanitary sewer system. The City’s sanitary sewer district 2 discharges to Metropolitan Council Environmental Services (MCES) Meter M211 and Interceptor 8361, and MCES is responsible for evaluating necessary improvements to their interceptor system. Wastewater is then conveyed to the Metropolitan Wastewater Treatment Plant (Metro WWTP). The Metro WWTP has a capacity of 314 million gallons per day (MGD) and reFeiYeV 0*' RI ÁRw aV RI 0arFK 22 7Ke waVtewater from the study area is anticipated to be of typical domestic strength and character, so pretreatment is not necessary. PINE STREET 4T H A V E N U E SU N S E T A V E N U E CARL STREET CENTURY T R A I L ROBINSON DRIVE MAIN STREET MAPPING NORTHWEST MAIN - MAIN STREET MASTER PLAN AUGUST 25, 2025 PREFERRED DEVELOPMENT SCENARIO | 34Page 88 of 171