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October 4,2001 <br /> Job Number: LG00-287 <br /> -Page 11 <br /> 1 <br /> estimate'.the'average daily quantity into the septic system, fifteen gallon's (15 gal) per day.per . <br /> employee and ten gallons (10 gal) per.day per custorner was the estimated use for the proposed . <br /> boutique winery. 'No kitchen facilities are planned. The facility is anticipating about'50 visitors ; <br /> per week(about 7.1 persons per day). No more than four(4) employees will be working at the <br /> facility. <br /> 'Two residential homes also are present on the property. It is anticipated that each small <br /> dwelling is two bedroom which may accommodate about three(3) persons each. It was i <br /> estimated that each person will generate one hundred(100) gallons per day. The anticipated <br /> average daily flow for the property is 731 gallons per day: The following table tabulates the <br /> anticipated daily usage.,for the property. <br /> Table 7. <br /> Total Estimated Daily Usage of Septic System. <br /> Category Effluent usage for People per day Effluent quantity per category <br /> each category <br /> Employees 15.gals. 4 4people*-.15 all erson-daY =60 gal/day <br /> Customers 10 gals 7.Y(50 weekly) 7.1 people* 10 gal/person-day-71 gal/day. <br /> Existing home' 100 gals .3. 3 people* 100 gal/person-day=300 gal/day <br /> Existing mobile 100 gals 3 3.people,* 100 gal/person-day-300 gal/day . <br /> home <br /> Daily Flow: 731 gals/day. <br /> Denitrification is an important process inseptic systems that normally occurs in the leach' ' . <br /> r line whereby certain bacteria utilize the oxygen in`the nitrate(NO3) and release nitrogen gas (N2) <br /> to the atmosphere. Denitrification is-expressed as a percentage; and-the normally accepted range <br /> is 10 percent to 35.percent. Soils with higher clay content,moist soil conditions,high pH, and. <br /> organic material denitrify about 35 percent and soils with very high sand content and fast <br /> percolation rates are estimated to denitrify at a.lower rate, about 10 percent to 15 percent. Due,to . <br /> the occurrence of clayey soils, the.denitrificatiori factor is estimat to be a u#25 ercent: <br /> An estimate of the quantity and quality of effluent is required for the analysis therefore.. <br /> the following information was used in the calculation. The deep percolation of rain was, <br /> estimated.to be 5.0.1 inches and the calculation is shown on Plate 8. The nitrate concentration of. <br /> rain a was,estimated to be 0.17 mg/L-N.' <br /> �sscc� <br /> r <br />