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The maximum average daily flow for the Site was estimated to be 726 gallons per day <br /> (gpd). Through the use of a weighted average, the average concentration of the <br /> different effluent flows and concentrations was determined to be 56.1 mg/L-N at 726 <br /> gallons per day. Please see the following tables: <br /> Table 3. Average Daily Flow Calculation <br /> Use Units Rate Subtotal Conversion Average Daily <br /> Factor* Flow <br /> Residence 3 bedroom 140 gal/bedroom 420 gpd none 420 gpd <br /> Mechanics 2 employee 13 gal/employee 26 gal 24/8 78 gpd <br /> (24 hrs.) <br /> Security <br /> Guards 2 employee 13 gal/employee 26 gpd 24/8 78 gpd <br /> (24 hrs.) <br /> Truckers 30 truckers 5 gal/departure 150 gal none 150 gal <br /> Total 726 gpd <br /> *Conversion factors adjust for extended work hours: 24/8 converts for workers present 24 hours. This factor needs to <br /> be taken into account since the flow values cited assume a standard eight-hour work day. <br /> Table 4. Weighted Average Concentration Calculation <br /> Use Average Daily Estimated Waste Weighted Average <br /> Flow Water Quality Product <br /> Residence 420 gpd 35 mg/L-N 14,700 gpd-mg/L-N <br /> Mechanics 78 gpd 85 mg/L-N 6,630 gpd-mg/L-N <br /> (24 hrs.) <br /> Security Guards 78 gpd 85 mg/L-N 6,630 gpd-mg/L-N <br /> (24 hrs.) <br /> Truckers 150 gpd 85 mg/L-N 12,750 gpd-mg/L-N <br /> Totals 726 gpd 40,710 gpd-mg/L-N <br /> Weighted Average 40,710 gpd-mg/L-N / 726 gpd = 56.1 mg/L-N <br /> Concentration: <br /> LOGE 1843 Page 11 <br />