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of 420 pmho/cm in June 2007. Samples collected from the wells in August 2007 were not <br />analyzed for EC. <br />Total Dissolved Solids (TDS) concentrations ranged from 480 to 600 mg/L in samples collected <br />from the monitoring wells in June 2007. TDS was detected in the domestic well at a <br />concentration of 280 mg/L in June 2007. Samples collected from the wells in August 2007 were <br />not analyzed for TDS. <br />Nitrate as nitrogen (NO3-N) concentrations ranged from 2.7 to 6.0 mg/L in samples collected <br />from the monitoring wells in June and August 2007. NO3-N was detected in the domestic well at <br />a concentration of 4.5 mg/L in June 2007. The domestic well was not sampled in August 2007. <br />WASTEWATER MANAGEMENT PLAN <br />As described above, tertiary disinfected recycled water produced at the RV Park WWTP will be <br />disposed of through a subsurface dispersal system. Management of the treated wastewater, <br />including water use, nutrient use, drainage, and other management considerations, is presented in <br />this section. <br />Water Use <br />Treated wastewater will be discharge through subsurface dispersal. Two subsurface dispersal <br />areas will be located at the site: one each on the green of Hole 3 and Hole 4, as shown in <br />Figure 2. Each subsurface dispersal area will consist of six banks of four I00 -foot trenches. The <br />subsurface dispersal system was designed using an application rate of 0.729 gpd/ft2 of trench <br />sidewall area, as required by San Joaquin County. A distribution valve located at each subsurface <br />dispersal area will cycle the application of treated wastewater through the individual trench <br />banks to distribute the wastewater application evenly throughout the subsurface dispersal area. <br />The subsurface dispersal of treated wastewater will eliminate the potential for applied <br />wastewater from comingling with runoff and leaving the application area. Treated wastewater <br />can therefore be discharged during storm events. <br />The subsurface dispersal area is capable of discharging the design flow during 100 -year annual <br />precipitation conditions. During i 00 -year precipitation conditions, the maximum monthly <br />rainfall occurs in January, and is 6.08 in, equivalent to a precipitation loading of 0.12 gpd/ft2. <br />The two proposed dispersal sites will cover a total land area of 30,200 ft' (0.69 ac). At the <br />proposed permit flow limit, 44,800 gallons of treated wastewater will be applied to the dispersal <br />area each day, equivalent to a wastewater loading of 1.5 gpd/ft . The total hydraulic Ioading <br />(precipitation loading plus wastewater loading) at the dispersal area is approximately 1.6 gpd/ft2, <br />which is well below the minimum rate of water intake reported in the Soil Survey of San Joaquin <br />County, California [1) for soils Iocated at the site (15 gpd/ft2). The two proposed dispersal sites <br />will cover a total land area of 24,300 ft2 (0.56 ac). To be conservative, this analysis neglects <br />evapotranspiration. <br />French Camp — Report of Waste Discharge 6 SAB027102 <br />July 2008 nasab027102\documents\rwdlfrenchcamprwd_july rev fnal.doc <br />