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On-Site Wells <br /> One well is currently located on the Site. However, it is not connected to a power <br /> supply and is consequently not operational at this time. <br /> No well permits were identified for the Site from among the San Joaquin County <br /> Environmental Health Department permit files. <br /> Water Sample <br /> No water sample was collected from the Site because the well is not currently <br /> operational. <br /> Sources of Nitrate to Groundwater <br /> Off-Site Sources of Nitrate <br /> Many sources can contribute to ground water nitrate contamination, including <br /> agricultural activities, dairies and cattle ranches, septic systems, and storm water <br /> infiltration. <br /> Septic systems and dairies have been found to be the most significant sources of nitrate <br /> in ground water. Orchards that require fertilization in sandy soils are also a significant <br /> source of nitrate contamination in shallow or sandy aquifers in San Joaquin County. <br /> The general area consists of residential lots, orchards, and a few commercial/industrial <br /> properties. A mobile home park is located approximately 1,000 feet northeast of the <br /> Site. <br /> LOGE 1832 Page 4 <br />