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St. Anthony 2040 Comprehensive Plan Chapter 7: Sanitary Sewer <br />137 <br /> <br />TABLE 7-5: PROJECTED WATER DEMAND <br />Land Use Flow per <br />Acre (gpd) <br />Detached Single Family 540 <br />Attached Single Family 990 <br />Manufactured Housing 990 <br />Multifamily 4,320 <br />Commercial, Retail, Industrial, Institutional, <br />Utility 800 <br />Park, Undeveloped None <br />Peak Flow Factors <br />To ensure that the sanitary sewer system is capable of handling flow <br />fluctuations throughout the day, peak flow factors are assigned based on <br />average flows. Typical peak factors are outlined by the Metropolitan <br />Council and are based on average flow rates. Pipes that serve small <br />generator customers are more likely to experience large fluctuations in <br />flows. Therefore, the peak factor decreases as average flow increases. <br />Since St. Anthony serves a small population with four unique sewer <br />districts, the larger peak factors used in this report were calculated using <br />flow data from the MCES meters in the city. This thorough usage of daily <br />city data from the last five years helped ensure a more accurate peak flow <br />factor specific to each sewer district. <br />Intercommunity Flow <br />St. Anthony currently has interconnections with two other municipalities, <br />Minneapolis and Roseville, as shown in FIGURE 7-1. The south area of St. <br />Anthony discharges into MCES interceptor 1-MN-302 which flows south <br />through Minneapolis. A small portion of western St. Anthony between 35th <br />and 37th Avenue is also interconnected with Minneapolis, although that <br />portion is unmetered. The north area of St. Anthony discharges into MCES <br />interceptor 1-RV-430 which flows east through Roseville. <br />Proposed Improvements <br />The required infrastructure additions were determined based on the areas <br />the City is planning to develop by 2040. The estimated timing and costs of <br />improvements are summarized in the Cost Estimates and Financing <br />section. <br />TABLE 7-6 below summarizes the lift station capacity analysis that was <br />conducted to determine if the current lift station pumping capacities are <br />sufficient to handle the anticipated 2040 max flows.