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WRCC Tracy Pumping Plant and C/M/S Holt Stations <br /> For the WRCC data, the closest WRCC station is the Tracy Pumping Plant (station <br /> 049001), located approximately 7.8 miles west of the Site. WRCC does not track <br /> evapotranspiration; consequently, rainfall data from the Tracy Pumping Plant and <br /> evapotranspiration data from the Holt station (the closest San Joaquin County CIMIS <br /> station to the Tracy Pumping Plant) were utilized (Plate 13). Based on the calculation <br /> shown, the estimated rate of recharge from percolating waters for vicinity of the Site is <br /> determined to be 6.17 inches. <br /> Live Oak then averaged the recharge rates from the Ripon station and the Tracy <br /> Pumping Plant station to arrive at a recharge value of 4.64 inches for the vicinity of the <br /> project Site. <br /> Quality of Rainwater <br /> Hantzsche and Finnemore utilize 1 mg/L-N as the nitrate concentration of rainwater; in <br /> the past, Live Oak has utilized this value for the nitrate loading calculation. <br /> In May 2019, Live Oak collected rainwater during two storm events in Lodi; the samples <br /> were analyzed for nitrate by FGL Environmental of Stockton. Each sample was <br /> collected in a clean, dry, stainless steel bowl, then decanted into a plastic container and <br /> placed on ice for transport. <br /> Nitrate was detected in the May 17 sample at a concentration of 0.4 mg/L-N and in the <br /> May 19 sample at a concentration of 0.2 mg/L-N. The laboratory analytical results are <br /> attached as Appendix 5 of this report. Live Oak then averaged the concentrations of the <br /> two samples, for a value of 0.3 mg/L-N to represent the nitrate concentration of rain. <br /> Because the San Joaquin County Environmental Health Department has requested that <br /> local and recent data be utilized wherever possible, the concentration of the Lodi <br /> rainwater been selected for the nitrate loading calculation. <br /> Quantity and Quality of Domestic Wastewater <br /> Mr. Kumar indicated that he plans to place a mobile home on the Site. He is unsure of <br /> the number of bedrooms (two, three, or four), as it will depend on the home he <br /> purchases. <br /> Crites and Tchobanoglous (1998) list a typical flow rate of 50 to 70 gallons per person <br /> per day for an individual residence. The San Joaquin County Enviromental Health <br /> Department has indicated that maximum flow and double occupancy within each <br /> bedroom should be considered for the nitrate loading assessment; as a result, a value <br /> of 140 gallons per bedroom per day has been selected (personal communication, <br /> January 6, 2017). <br /> LOGE 1910 Page 9 <br />