Laserfiche WebLink
Recharge Scenario 2— CIMIS and WRCC Tracy Pumping Plant Stations <br /> For the scenario combining CIMIS and WRCC data (Plate 15), the closest WRCC <br /> station is the Tracy Pumping Plant (station 049001), located approximately 5.0 miles <br /> from the Site. This station is approximately 8.6 miles closer than the CIMIS station, and <br /> as a result is anticipated to have more accurate regional rainfall data. WRCC does not <br /> track evapotranspiration; consequently, evapotranspiration data from the Ripon and Holt <br /> stations were averaged and utilized. Based on the calculation shown, the estimated <br /> rate of recharge from percolating waters for vicinity of the Site is determined to be 5.54 <br /> 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; 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. Live Oak then averaged the <br /> concentrations of the two samples, for a value of 0.3 mg/L-N to represent the nitrate <br /> 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 use in the nitrate loading calculation. <br /> Quantity and Quality of Domestic Wastewater <br /> The Perugis indicated that they plan to place a two-bedroom modular home on the Site. <br /> The existing home has three bedrooms. <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 20-01 Page 10 <br />