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JAMES D ROBINSON.PE,CEG Page <br /> 'March 23, 2010 <br /> i'ro'ect Nilir 2010-1015 <br /> runoff is ignored(more conservative), The data is located in the Appendix. <br /> Based on the researched da 4r the average percolation of ran is estimatedto b 5.76 inches r <br /> year. Vhe averageamount of nitrate contained witifinvain is considered to be l igil.. <br /> Current On-etre Vices of Nitrate <br /> Currently,there is a residence and irrigated agricultural land-. <br /> Future On-site Sources of Nitrate <br /> In addition to the present scares of Nitrate(current residences), the prolsed Center Vill <br /> provide an additional amount of Nitrate, to the-site. Based on the information provided by the <br /> client, there will be no more then 24 people at the center as a daily avera (lased on the <br /> maximum allowed in the Conditions of Approval). In addition,the building wot ld be considers. <br /> a Public Gathering Place with an avert effluent of 10 Morns per day pmerMon n (San Joaquin. <br /> County mite Waste Water Dismal Standards, Page 13) and an average of 21 people per day. <br /> A total.of 240 gallons per day ofeffluent is anticipated. <br /> The average total nitrogen concentration of domestic waste war is t o nsider l 20-85 <br /> m of N with 33 to 45 mgfL sof N typical.. For this project a average of a mg/l. of N is <br /> anticipated of'the life of the system. <br /> Bad on the line gid.sited particles in the,soiL denitrificafion is anticipated to occur to <br /> a limited extent. Typioif denitrification is within the 10 to 35 percent range. For this site, IS <br /> percent denitrifaction of dro soils and wastewater is anticipate <br /> ?bass BWance of Nitrogen Loading <br /> mass balance of nitrogen loading was performed to determine ine the inapac:t from the: <br /> PO BOX r 44,VAUEY SPRR409.CA9S252, PHOW.0'642455 'FAX(20%7 M <br />