Agenda - Council - 03/10/2015 - Laserfiche WebLink

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areas can be served by the regional wastewater system. However, redevelopment of areas in closer proximity to transit and major highways within the Metropolitan Plant's service area has lower cost and much higher potential for wastewater generation that will utilize the plant and interceptor system's long-term capacity. Consequently, the above study areas have been omitted from the long-term wastewater service area to reserve capacity for those areas that are redeveloping. Eastern Hugo, which has previously been identified as a study area for potential future wastewater services, has also been omitted from the long-term wastewater service area. Studies are under way to determine the relationships among groundwater withdrawal for municipal water supply, groundwater recharge, and lake levels and then to develop a water sustainability plan for the northeast part of the region. St. Croix Valley. Previously, the wastewater system plan assumed a future plant expansion. The current regulatory trends indicate the likelihood of much more stringent future discharge permit limits. The additional facilities to meet these limits are likely to fully utilize the remaining capacity at this plant site. Consequently, no plant expansion is planned. A modest service area increase of approximately 1,000 acres should be adequate to utilize the remaining capacity. Given their proximity to Hwys. 36 and 5 and to adjacent sewered development, portions of Baytown and Grant are most viable potential long-term service area additions to the existing service area. Potential Future Wastewater Treatment Plants To support long-term sewered development of the region, five new wastewater treatment plants are envisioned in the northwest, northeast, southeast, and southwest areas. These areas also face water supply challenges due to the absence of the Prairie du Chien Jordan aquifer or demand that may cause excessive aquifer drawdown. Consequently, new wastewater treatment plants are proposed to be wastewater reclamation plants that produce treated water that is suitable for non -potable uses, such as toilet flushing and irrigation, which will reduce the water demand on the groundwater aquifers. In the northeast area, groundwater recharge with treated wastewater also appears feasible. Crow River. The Council and the City of Rogers have been working to locate a new wastewater reclamation plant in western Rogers. This plant will eventually serve Rogers, eastern Corcoran, and western Dayton, and provide long-term capacity relief for the Elm Creek Interceptor. Carver County. The potential wastewater generation for the long-term service area of the Blue Lake Plant could exceed the build -out capacity of the plant site sometime after 2040. One option to address this possibility is a service area revision that diverts wastewater from western communities to a new regional wastewater reclamation plant in Carver County. This new plant should be located so that it could serve development along the corridor between Chaska and Cologne. Scott County. The Scott County 2030 comprehensive plan, prepared in coordination with the regional wastewater system plan, designates portions of western Scott County for potential long-term sewered development. This area will be served by a future regional wastewater reclamation plant located in the Louisville Township area. This plant also could provide capacity relief for the Blue Lake Plant. 35