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• Table 5. Average Daily Flow Calculation <br /> Use Units Rate Subtotal Reduction Average Daily <br /> Flow <br /> Houses 20 <br /> (existing) bedroom 140 gal/bedroom 2,800 gpd none 2,800 gpd <br /> Potential <br /> Second Unit 10 bedroom 140 gal/bedroom 1,400 gpd none 1,400 gpd <br /> Dwellings <br /> Winery Staff 391 staff 13 gal/staff 5,083 gpd none 5,083 gpd <br /> Tasting Room <br /> Customers 119 3 gal/customer 357 gpd none 357 gpd <br /> (weekend) <br /> Event <br /> Customers 86 5 gal/customer 430 gpd 10/365 11.8 gpd <br /> Total 9,651.8 gpd <br /> Reduction factors convert calculated flow into average daily flow over a year; 10/365 converts for events per year. <br /> Table 6. Weighted Average Concentration Calculation <br /> . Use Average Daily Estimated Waste Weighted Average <br /> Flow Water Quality Product <br /> Existing Residences 2,800 gpd 35 mg/L-N 98,000 gpd-mg/L-N <br /> Potential Second Unit 1,400 gpd 35 mg/L-N 49,000 gpd-mg/L-N <br /> Dwellings <br /> Winery Staff 5,083 gpd 85 mg/L-N 432,055 gpd-mg/L-N <br /> Tasting Room Customers 357 gpd 85 mg/L-N 30,345 gpd-mg/L-N <br /> Event Customers 11.8 gpd 85 mg/L-N 1,003 gpd-mg/L-N <br /> Totals 9,651.8 gpd 610,403 gpd-mg/L-N <br /> Weighted Average 403 610, d-m IL-N / 9,651.8 <br /> Concentration: 9p 9 gpd = 63.2 mg/L-N <br /> • LOGE 1714 Page 17 <br />