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Existing System Analysis and <br />Deficiencies <br />The existing sanitary sewer system capacities to convey existing <br />system wastewater flows to the MCES collection system were <br />analyzed by considering the land use designations within the Sewer <br />Districts shown in Map 11-2 and typical MCES flow assumptions per <br />capita. Existing system as -built information was used to determine <br />pipe capacities. Average day flows were calculated by determining <br />the acreages of each land use designation in each district, assuming a <br />typical flow generated per capita, and scaling the flows to coincide with <br />MCES flow data. <br />All trunk sanitary sewer mains exhibited adequate capacity for the <br />existing system flows. Table 11-4 summarizes the existing average <br />and peak system flows by Sewer Sub -District. The flows reported <br />below do not include flow from upstream Sub -Districts. However, <br />cumulative flows from upstream Sub -Districts were considered in the <br />capacity analysis of existing trunk sewer and lift stations. <br />As detailed in the following table, all of the City's existing lift stations <br />have sufficient capacity to accommodate additional growth. Table <br />10-5 shows existing lift station pump capacity and existing peak flow <br />information. <br />ITUW 2040 COMPREHENSIVE PLAN UPDATE <br />Table 11-4 Existing Sanit <br />tem Flows <br />Al <br />0.0008 <br />4.0 <br />0.0033 <br />B1 <br />0.0007 <br />4.0 <br />0.0029 <br />B2 <br />0.0008 <br />4.0 <br />0.0034 <br />C1 <br />0.0026 <br />4.0 <br />0.0103 <br />C2 <br />0.0028 <br />4.0 <br />0.0111 <br />D2 <br />0.0083 <br />4.0 <br />0.0331 <br />E1 <br />0.0057 <br />4.0 <br />0.0229 <br />E2 <br />0.0133 <br />4.0 <br />0.0531 <br />E3 <br />0.0226 <br />4.0 <br />0.0904 <br />E5 <br />0.0099 <br />4.0 <br />0.0395 <br />F1 <br />0.0058 <br />4.0 <br />0.0230 <br />G2 <br />0.0202 <br />4.0 <br />0.0806 <br />H1 <br />0.0030 <br />4.0 <br />0.0121 <br />H2 <br />0.0072 <br />4.0 <br />0.0288 <br />11 <br />0.0210 <br />4.0 <br />0.0840 <br />12 <br />0.0024 <br />4.0 <br />0.0096 <br />13 <br />0.0063 <br />4.0 <br />0.0251 <br />14 <br />0.0617 <br />4.0 <br />0.2466 <br />11 <br />0.0169 <br />4.0 <br />0.0676 <br />J2 <br />0.0104 <br />4.0 <br />0.0415 <br />If <br />:111280McNYA <br />for review only <br />J3 <br />0.0053 <br />4.0 <br />0.0213 <br />J4 <br />0.0125 <br />4.0 <br />0.0500 <br />J5 <br />0.0204 <br />4.0 <br />0.0817 <br />K1 <br />0.0715 <br />4.0 <br />0.2860 <br />K2 <br />0.0249 <br />4.0 <br />0.0996 <br />K3 <br />0.0074 <br />4.0 <br />0.0295 <br />K4 <br />0.0301 <br />4.0 <br />0.1204 <br />K5 <br />0.0161 <br />4.0 <br />0.0643 <br />L1 <br />0.0134 <br />4.0 <br />0.0534 <br />L2 <br />0.0104 <br />4.0 <br />0.0416 <br />L3 <br />0.0071 <br />4.0 <br />0.0286 <br />M1 <br />0.0433 <br />4.0 <br />0.1731 <br />N2 <br />0.0184 <br />4.0 <br />0.0735 <br />N3 <br />0.0083 <br />4.0 <br />0.0331 <br />N4 <br />0.0389 <br />4.0 <br />0.1554 <br />N5 <br />0.0194 <br />4.0 <br />0.0777 <br />N6 <br />0.0225 <br />4.0 <br />0.0902 <br />N9 <br />0.0250 <br />4.0 <br />0.1001 <br />Total Existing <br />0.617 <br />3.4 <br />2.098 <br />System Flows <br />COMPREHENSIVE SANITARY <br />SEWER PLAN <br />W <br />