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L <br /> LApril 14,2006 <br /> NOA Project Number. E06038A <br /> Typical Quantity of Effluent <br /> Category Total People Average Quantity per Average Daily Flow <br /> per Day Person Per Parcel <br /> Employees— 2 daily (2 employees+6 employees*3/7+ 14 <br /> G Fri-Sun 13 gpd/employee employees ,,/a}- 33-Rd/employee <br /> "fasting Room 14 Sat-Sun ( = <br /> Employees— 4 Fri-Sun (4 employees*3/7+4 loyees.*5/7) <br /> Restaurants 4 Thurs-Mon 13 gpd/employee 13 gpd/employee 9 gpd j <br /> Employees— 30/event,four 13 gpd/employee 30 employees*40'fi *13 gpd/employee <br /> Special Event events/year —4 gd <br /> Customer— <br /> Fasting Room 35.7 daily ave. 3 gpd/customer 35.7 customers*3 gpd= 07 gpd <br /> Customer- 45 Fri-Sun (45 customers*3/7 + 50 customers-*5/7) <br /> Restaurant 50 Thurs-Mon 9 gpd/customer :g gpd/customer'= 495 gpd <br /> Customer— 350/event,four 3 gpd/customer 350 customers*4/365* 3 gpd= 12 gpd' <br /> Special Event events/year <br /> Total Average DailFlow= 788 d <br /> Note —gpd is gallons per day;2/7,3/7,and 5/7 are conversions for limited work weeks;4/365 is a conversion <br /> Lfor four events per year. <br /> For the subject property,the total daily waste water quantity is f $8 gallons per day. <br /> The average total nitrogen concentration of domestic waste water t`s'normaHy considered to be 20 to <br /> 85 mg/L-N with 35 to 45 mg/L-N being typical(Crites and Tchobanoglous, 1998). Bar waste <br /> water is known to have higher than typical concentrations of nitrate,while restaurant waste water is <br /> Lusually around the typical concentration. Because both tasting rooms and restaurants are involved <br /> in this project it is es a average conce n of total nitrogen in waste water for the <br /> project is approximat 1 50 mg/L-N over the long term.'! � L« <br /> 4.2 Denitti6cation Estimate <br /> Denitrification is an important process which occurs within the leach field whereby certain bacteria <br /> utilize the oxygen in the nitrate (NO3) and release nitrogen gas (Na) to the atmosphere. <br /> Denitrification is expressed as a percentage,and the normally accepted range is 10 percent to 35 <br /> percent Soils with higher clay content,moist soil conditions,high pH,and organic material <br /> denitrify by about 35 percent, and soils with high sand content and fast percolation rates are <br /> estimated to denitrify at a lower rate, about 10 percent to 15 percent. <br /> A standard denitrification fa�tor of 25percent wa selected for the Site. <br /> L <br /> 6 <br /> V <br />