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WA1005- CS110913 (4)City of Coppell Historical Water Demand Year Population Average Day Water Usage (MGD) Maximum Day Usage (MGD) Average Day to Maximum Day Peaking Factor Historical Average Residential Water Demand (gpcd) Historical Overall Water Demand (gpcd) 2000 36,051 8.3 17.0 2.0 141 196 2001 36,867 8.0 17.0 2.1 134 198 2002 38,168 7.9 18.5 2.3 123 182 2003 38,500 8.2 18.5 2.3 142 208 2004 38,650 7.6 17.4 2.3 109 166 2005 38,900 8.4 18.5 2.2 141 215 2006 39,209 9.7 18.1 1.9 149 233 2007 39,367 6.8 14.0 2.1 104 167 2008 39,565 8.1 17.4 2.1 125 204 2009 39,655 8.1 17.3 2.1 114 183 2010 39,750 7.5 17.3 2.3 124 198 2.2 128 196Average City of Coppell Historical Wastewater Flows Year Population Average Day Wastewater Flow (MGD) Historical Average Residential Wastewater Flow (gpcd) Historical Overall Wastewater Flow (gpcd) 2000 36,051 3.5 51 97 2001 36,867 3.9 53 106 2002 37,683 3.9 55 103 2003 38,499 3.9 46 101 2004 38,650 4.0 57 103 2005 38,900 3.7 34 95 2006 39,200 3.2 12 82 2007 39,350 3.4 35 86 2008 39,565 3.4 21 86 2009 39,655 3.5 31 88 2010 39,750 3.5 27 87 City of Coppell Projected Water Demands Year Population Commercial Acres Parks (acres) Average Residential Usage (gpcd) Average Day Commercial Water Usage (gpd/acre) Average Day Park Water Usage (gpd/acre) Maximum Day to Average Day Peaking Factor Peak Hour to Maximum Day Peaking Factor 2011 38,659 2,228 872 175 1,250 250 2 2 2021 40,195 2,823 1,200 175 1,250 250 2 2 Year Average Day Demand (MGD) Maximum Day Demand (MGD) Peak Hour Demand (MGD) 2011 9.8 19.5 39.1 2021 10.9 21.7 43.5 City of Coppell Projected Wastewater Flows Year Population Commercial Acres Parks (acres) Average Daily Residential Loading (gpd/acre) Average Daily Commercial Loading (gpd/acre) Average Daily Park Loading (gpd/acre) Peak Wet Weather to Average Daily Peaking Factor 2011 38,659 2,228 872 75 550 45 4 2021 40,195 2,823 1,200 75 550 45 4 Year Average Annual Daily Flow (MGD) Peak Wet Weather Flow (MGD) 2011 4.16 16.66 2021 4.62 18.49