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Recharge Scenario 1 — CIMIS Holt & Ripon Stations <br /> For the CIMIS-only scenario, the local percolation and evapotranspiration rates obtained <br /> through CIMIS are presented in Plates 14 and 15. The closest CIMIS stations to the <br /> Site are Holt (248) and Ripon (249), located approximately 9.9 and 11.4 miles away, <br /> respectively. Data for these stations were available for 2017, 2018, and 2019. Based <br /> on the calculation shown, the estimated rate of recharge from percolating waters for the <br /> Holt station is determined to be 4.04 inches (Plate 14); the estimated rate of recharge <br /> from percolating waters for Ripon station is determined to be 3.00 inches (Plate 15). <br /> The values from these two stations are then averaged for a final result of 3.52 inches. <br /> Recharge Scenario 2— CIMIS and WRCC Tracy Pumping Plant Stations <br /> For the scenario combining CIMIS and WRCC data (Plate 16), the closest WRCC <br /> station is the Tracy Pumping Plant (station 049001), located approximately 6.4 miles <br /> from the Site. This station is approximately 5.0 miles closer than the closest CIMIS <br /> station, and as a result is anticipated to have more accurate regional rainfall data. <br /> WRCC does not track evapotranspiration; consequently, evapotranspiration data from <br /> the Ripon and Holt stations were averaged and utilized. Based on the calculation <br /> shown, the estimated rate of recharge from percolating waters for vicinity of the Site is <br /> determined to be 5.54 inches. <br /> Live Oak has selected this scenario for use in the nitrate loading calculation based on <br /> the proximity of the Tracy Pumping Plant Station to the project Site. <br /> Quality of Rainwater <br /> Hantzsche and Finnemore listed 1 mg/L-N as the nitrate concentration of rainwater for <br /> their original calculation; in the past, Live Oak has also utilized this value for the nitrate <br /> loading calculation. <br /> In May 2019, Live Oak collected rainwater during two storm events in Lodi; in March <br /> 2020, Live Oak collected an additional sample at the same location. 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. The samples were analyzed for nitrate by FGL <br /> Environmental of Stockton. <br /> Nitrate was detected in the May 17, 2019 sample at a concentration of 0.4 mg/L-N, in <br /> the May 19, 2019 sample at a concentration of 0.2 mg/L-N, and in the March 16, 2020 <br /> sample at a concentration of 0.2 mg/L. Live Oak then averaged the concentrations of <br /> the three samples, for a value of 0.27 mg/L-N to represent the nitrate concentration of <br /> rain. The analytical reports are attached as Appendix 6. <br /> LOGE 20-12 Page 11 <br />