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• • Chapter 7. Sanitary Sewer as ofAugustll, 2008 Introduction: The City of Lino Lakes has a total area of 21,450 acres, of which about 3,000 land acres is occupied by the Chain of Lakes Regional Park and about 520 acres by the Interstate 35W and 35E corridors. The remainder of the City includes extensive wetland areas and several small lakes. Sanitary wastewater generated in the City is either treated in on -site systems or is collected in city owned sanitary sewers and conveyed to Metropolitan Council interceptors for treatment at the Metropolitan Wastewater treatment Plant in St. Paul. On -site treatment systems are generally located on larger lot developments in the City. Most are in unsewered areas but a few remain in neighborhoods that received service after on -site systems were built. The City's Comprehensive Sewer Plan was first adopted in 1990. Portions were updated in 1999 and incorporated into the City's Comprehensive Plan as "Public Facilities Plan - Sewer Element." The 2008 Sanitary Sewer Plan is being prepared for two primary purposes. The first purpose is to provide recommendations and guidance to the City by evaluating the comprehensive sewer system requirements needed from now to the year 2030 and beyond. This is completed by developing a strategy to implement a sanitary sewer system in accordance with the anticipated growth and development patterns of the City and devising a proposed infrastructure system that can be feasibly and economically constructed to support this growth. The second purpose is to produce documentation that can be used by state, local, and regional agencies for planning purposes. This Plan evaluates the capacity and hydraulic capabilities of both the City's existing and future sanitary sewer system. This chapter summarizes the full Plan. Figure 7- 1, Existing Sanitary Sewer System and Figure 7 -2, Sewer District Map depict the starting point of this Chapter. The scope of the full Plan is to document comprehensive sanitary sewer system requirements for the City. The scope is limited to providing general guidance and alignment information for implementing future trunk sewer lines and wastewater lift stations, based on anticipated long -term growth. The Plan will allow the City to accommodate forecasted growth. A major focus of this Plan is estimating the projected wastewater flow from the City and the required capital improvements through 2030. At the same time, a long -term (beyond 2030) evaluation is necessary to determine future major facility requirements. 7 -1