Laserfiche WebLink
New Moose Lodge Nitrate Loading Study Page 4 of 7 <br /> Our Project Number: E07175A <br /> November 5, 2007 <br /> The following table presents the septic waste water uses associated with the Site. The rates <br /> presented from the references provide general guidance but do not always reflect a match in <br /> usage. Careful examination, professional judgment, and experience are necessary to select a <br /> reasonable flow rate estimate. The flow rates selected for the uses associated with this project <br /> are presented next. <br /> Table 1. <br /> Typical Quantity of Effluent. <br /> Category Total People Average Quantity per Average Daily Flow per Parcel <br /> per Day Person <br /> Customers— 40 5 gal/day/customer (40 customers* 5 gpd * 5/7) = 143 gpd f <br /> weekday <br /> Customers— 150 5 gal/day/customer (150 customers* 5 gpd * 2/7) = 214 gpd/ <br /> weekend <br /> Employees— 4 13 gal/day/employee (4 employees* 13 gpd * 5/7) = 37 gpd <br /> weekday _ <br /> Employees— 6 13 gal/day/employee (6 employees* 13 gpd * 2/7) = 22 gpd <br /> weekend . ai ate,aA <br /> Flow from N/A 50 gal/day 50 gpd <br /> commercial <br /> dishwasher <br /> Gathering (two 150 5 gal/day/customer (150 customers* 5 gpd * 24/365) = 49 gpd' <br /> per month) <br /> New Year's Eve 210 5 gal/day/custome (210 customers* 5 gpd * 1/365) = 3 gpd <br /> Event(annual) __� 15�c5 -49 14�x <br /> Note: gpd is gallons per day. 5/7 is a conversion for the 5-day week. /7 is a conversion for the weekend. 24/365 is a conversion <br /> for a twice-monthly event. 1/365 is a conversion for an annual event. <br /> For the subject property, the total daily waste water quantity is 518 gallons per day. Of these <br /> 518 gallons, 468 gallons are attributed to restroom use, and 50 gallons are attributed to <br /> dishwasher use. <br /> The average-totat-nitrogen concentration of domestic waste water is normally considered to be <br /> 20185 mg/L-N with 35 to 45 cmg/L-N being typical (Crites and Tchobanoglous, 1998). It is <br /> estimated--that--c-GnurReiat use will have higher concentrations of total nitrogen when compared <br /> to residential use; in this case(85 mg/L-N has been selected for restroom use. The 50 gpd <br /> from the dishwasher will have an—approximate concentration of 5 mg/L-N. A weighted average <br /> calculation is presented next: <br /> 902 Industrial Way•Lodi,CA 95240.209.367.3701 •Fax 209.369.4228 02007 Neil O.Anderson&Associates,Inc <br /> S <br />