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7.0 Sanitary Sewer System Plan <br />The City of Gem Lake currently owns and maintains a <br />sanitary sewer system that currently serves all of the <br />businesses at the Hoffman's Corners area and a segment of <br />the residential area along Scheuneman Road north of U.S. <br />Highway 61. The City of Vadnais Heights supplies sanitary <br />sewer services to the Tousley Ford property, the Montessori <br />School at the corner of County Road E and Labore Road, <br />and several residences that neighbor the school. <br />Existing Sanitary Sewer System <br />The current system consists of approximately 13,400 Lineal <br />Feet (LF) of sanitary sewer pipe ranging from 8" to 12" in <br />diameter of both vitrified clay pipe (VCP) and <br />polyvinylchloride pipe (PVC). There are approximately 65 <br />manholes in the system. There are no lift stations or <br />forcemains within the existing system. Figure 7.1 shows <br />the City's current sewer system. <br />Currently the system discharges into the Metropolitan <br />Council Environmental Services (MCES) System in four <br />locations as shown in Figure 7.1. The system discharges <br />into a combination of both the VH423 Interceptor and the <br />7122 Interceptor. Currently the Met Council does not have <br />a metering station near the city limits of Gem Lake. <br />The existing condition of the City's sewer system was <br />evaluated in the fall of 2006 / spring of 2007. A sanitary <br />sewer system plan was developed in May of 2007 by SEH <br />for the City. This plan was developed based on the field <br />inspections of manholes and a closed circuit televised <br />(CCTV) inspection of the pipes. <br />Projected Flows <br />Projected flows for the sanitary sewer system shown in <br />Table 7.1 uses the data from the City's System Statement <br />prepared in 2005 and linear projections to estimate future <br />flows. The projections were estimated based on historical <br />flow data and projected sewered housing and employment <br />information. In 2006 the City's average sanitary sewer <br />flow measured by MCES was recorded as 0.027 million <br />gallons per day (MGD) and their current billing is 10 <br />million gallons per year. <br />City of Gem Lake Comprehensive Plan ' page 7-1 <br />