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218 <br />Wastewater Plan <br />Overview and Background <br />Growth of population and jobs in a community can present challenges to ensuring the needs of residents <br />and businesses are adequately met. One of the key elements in addressing this challenge is the planning, <br />construction, and maintenance of adequate wastewater collection systems. A Wastewater and <br />Comprehensive Sewer Plan is a useful tool for defining the strategies the City will use to accomplish <br />planning, construction, and maintenance of the wastewater system. <br />Under the state Metropolitan Planning Act, local governments are required to submit a wastewater and <br />comprehensive sewer plan element as part of their overall comprehensive plan. This includes <br />describing service needs from the regional system in support of planned growth. Prior to any expansion <br />of sanitary sewer service, this plan must be found consistent with the regional 2040 Water Resources <br />Policy Plan produced by the Metropolitan Council. <br />In 2005 the City of Ramsey completed a Comprehensive Sanitary Sewer Study which was prepared by <br />consulting engineers Bolton & Menk, Inc. The 2005 Plan presented a guide plan for the extension of the <br />sanitary sewer trunk system to the entire City. In 2012 the City updated the 2005 Comprehensive Sanitary <br />Sewer Study. This update focused on the proposed sanitary sewer trunk extensions and improvements <br />which are required to provide service to all areas within the 2030 MUSA boundaries. In September, 2017, <br />the City completed an update to the 2012 Comprehensive Sanitary Sewer Study. The 2012 study and <br />2017 update identified the ultimate sanitary sewer flows for the City. The City of Ramsey is considered <br />by Metropolitan Council to be a "Developing Community" and as such is presently allowed to extend <br />sanitary sewer service anywhere within MWCC Sanitary Sewer District 3 boundary (south of Trott <br />Brook). The current extent of the sewered area is now adjacent to Trott Brook and revised land use plans <br />require its extension to the remaining portion of the City. The City's current wastewater flow allocation <br />is 3.8 million gallons per day (mgd). <br />The 2017 update to the Comprehensive Sanitary Sewer Study completed by Bolton & Menk Inc. is <br />incorporated in this Plan in Appendix B. Revised sanitary sewer flow projections based on the revised <br />Future Land Use Map are included as Exhibit 8:1 of this Chapter. The flow assumptions for calculating <br />sanitary sewer flow are as follows: <br />Description <br />Factor <br />Gallons per Person per Day <br />75.0 <br />Flow Variation Factor <br />2.5 to <br />4.0 <br />People per Unit <br />3.0 <br />Flow per unit <br />225 <br />Employees per Acre <br />20 <br />Commercial/Industrial Flow per <br />Acre <br />1,500 <br />Existing System <br />The existing wastewater treatment system, shown in Figure 1 in Appendix A, includes 8 Lift Stations, <br />forcemain and gravity sanitary sewer. This figure also shows the location of the two connection points <br />to the MCES system. The City does not have a separate sanitary sewer treatment facility from the MCES, <br />City of RAMSEY <br />Comprehensive Plan 24 <br />