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Table 4. Average Daily Flow Calculation <br /> Use Units Rate Subtotal Reduction Average Daily <br /> Flow <br /> Residences bedroom 140 gal/bedroom 980 gpd none 980 gpd <br /> Employee 3 13 gal/employee 39 gal 5/7 27.9 gal <br /> (Mon.-Fri.) employee <br /> Employee 2 13 gal/employee 26 gal 1/7 3.7 gal <br /> (Saturday) employee <br /> Employee 1 13 gal/employee 13 gal 1/7 1.9 gal <br /> (Sunday) employee <br /> Customers 8 5 gal/customer 40 gpd 5/7 28.6 gpd <br /> (Mon.-Fri.) <br /> Customers 46 5 gal/customer 230 gpd 1/7 32.9 gpd <br /> (Saturday) <br /> Customers <br /> (Sunday) 14 5 gal/customer 70 gpd 1/7 10 gpd <br /> Total 1,085 gpd <br /> • Reduction factors convert calculated flow into average daily flow over a year: 5/7 and 1/7 convert for days of <br /> operation per week. These reduction factors need to be taken into account since the numbers of customers and <br /> employees vary depending on the day of the week. <br /> Table 5. Weighted Average Concentration Calculation <br /> Use Average Daily Estimated Waste Weighted Average <br /> Flow Water Quality Product <br /> Residences 980 gpd 35 mg/L-N 34,300 gpd-mg/L-N <br /> Employee 33.5 gal 85 mg/L-N 2,847.5 gpd-mg/L-N <br /> Customers 71.5 gpd 85 mg/L-N 6,077.5 gpd-mg/L-N <br /> Totals 1,085 gpd 43,225 gpd-mg/L-N <br /> Weighted Average 43,225 gpd-mg/L-N / 1,085 gpd =39.8 mg/L-N <br /> Concentration: <br /> • LOGE 1820 Page 11 <br />