2009 COMPREHENSIVE PLAN - Laserfiche WebLink

Home

7.0 Sanitary Sewer System Plan The City of Gem Lake currently owns and maintains a sanitary sewer system that currently serves all of the businesses at the Hoffman's Corners area and a segment of the residential area along Scheueneman Road north of U.S. Highway 61. The City of Vadnais Heights supplies sanitary sewer services to the Tousley Ford property, the Montessori School at the corner of County Road E and Lahore Road, and several residences that neighbor the school. Existing Sanitary Sewer System The current system consists of approximately 13,400 Lineal Feet (LF) of sanitary sewer pipe ranging from 8" to 12" in diameter of both vitrified clay pipe (VCP) and polyvinylchloride pipe (PVC). There are approximately 65 manholes in the system. There are no lift stations or forcemains within the existing system. Figure 7 - Sanitary Sewer Comprehensive Plan map shows the City's current sewer system. Currently the system discharges into the Metropolitan Council Environmental Services (MCES) System in four locations as shown in Figure 7 - Sanitary Sewer Comprehensive Plan. The system discharges into a combination of both the VH-423 Interceptor and the 7122 Interceptor. Currently the Met Council does not have a metering station near the city limits of Gem Lake. The existing condition of the City's sewer system was evaluated in the fall of 2006 / spring of 2007. A sanitary sewer system plan was developed in May of 2007 by SEH for the City. This plan was developed based on the field inspections of manholes and a closed circuit televised (CCTV) inspection of the pipes. Projected Flows Projected flows for the sanitary sewer system shown in Table 7 - Projected Wastewater Flows (2007 2030) uses the data from the City's System Statement prepared in 2005 and linear projections to estimate future flows. The projections were estimated based on historical flow data and projected sewered housing and employment information. In 2006 the City's average sanitary sewer flow measured by MCES was recorded as 0.027 million gallons per day (MGD) and their current billing is 10 million gallons per year. SEH....,. 7.0 sanitary sewer system plan I page 41