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scenario. Based on these generation rates, the estimated average day wastewater <br />flow projected for the portion of the study area west of TH 10 under Scenario 2 <br />would be 0.105 MGD and the estimated peak hour flow would be 0.40 MGD. <br />The portion of the study area between TH 10 and the Burlington Northern Railroad <br />would consist of approximately 20 acres temporary destination retail, l7 acres <br />destination retai1,116 acres of job area, 8 acres of transit center, and 5 acres of open <br />space. An average daily wastewater flow of 1,000 gpd/acre will be used for <br />destination retail, and transit center. An average daily wastewater flow of 700 <br />gpd/acre will be used for jobs area. No wastewater flow is projected for temporary <br />destination retail and open space. Based on these generation rates, the estimated <br />average day wastewater flow projected from this area would be 0.106 MGD and the <br />estimated peak hour flow would be 0.403 MGD <br />Table 18-5 summarizes the estimated wastewater flow generated from the study <br />area under Scenario 2. <br />Table 18-5. Estimated Average Day and Peak Hour Wastewater Flow from Scenario 2. <br /> Average Total Average peak Hour <br /> <br />Type Acres Housing Daily Daily Wastewater <br /> (Gross) (units) Wastewater Wastewater <br />Flow (gpd) <br /> Flow (gpd) Flow (gpd) <br />High Density. 46 368 200/unit 74,000 281,000 <br />Residential <br />Job Area 116 700/acre 81,200 309,000 <br />Destination Retail 45 - 1,000/acre 45,000 171,000 <br />Temporary Destination 20 - 0 0 0 <br />Retail <br />Transit Center 8 - 1,000/acre 8,000 30,400 <br />Service/ 3 _ 1,000/acre 3,000 11,600 <br />Commercial <br />Open Space 5 - 0 0 0 <br />Right-of-Way 10 - 0 0 0 <br />Total 253 211,200 803,000 <br />Table 18-6 summarizes the estimated characteristics and loading for the <br />wastewater that will be generated from the 171 Avenue AUAR study area under <br />Scenario 2. <br />Table 18-6. Estimated Wastewater Characteristics and Total Average Daily Wastewater <br />Loading from Scenario 2. <br /> <br />Parameter Estimated Wastewater Characteristics and Average <br />Day Loading <br /> mg/I Ibs/day <br />Biochemical Oxygen Demand 295 520 <br />Total Suspended Solids 150 264 <br />Total Phosphorous 6.5 11 <br />City of Elk River <br />Draft Alternative Urban Areawide Review <br />' August 2011 <br />Page 47 of 90 <br />