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On-Site Wells <br /> According to Mr. Bokisch, one domestic well, one irrigation well, and one out-of-service <br /> irrigation well exist on the Site (Plate 3); Mr. Bokisch has a non-operation permit for the <br /> out-of-service well. He indicated that one domestic well was on the Site when he <br /> purchased it; he used this well for irrigation and had a new domestic well drilled. When <br /> the old well could not provide enough capacity for irrigation of a larger area, Mr. Bokisch <br /> had a new irrigation well drilled. Four well permits were identified for the Site addresses <br /> at San Joaquin County Environmental Health Department: <br /> • September 1995 permit for new domestic well (now the out-of-service irrigation <br /> well). <br /> • February 1997 permit for new domestic well. <br /> • December 2001 permit for new irrigation well to replace old well. <br /> • December 2001 permit for out-of-service well. <br /> These permits are included in Appendix 4. <br /> Water Sample <br /> Live Oak collected a water sample from the domestic well on the Site on January 28, <br /> 2014. The sample was to be analyzed for Nitrate and dibromochloropropane (DBCP) <br /> per San Joaquin County Environmental Health Department policy. <br /> As required by the laboratory, the sample was collected in a plastic container and two /��) <br /> glass vials for nitrate and DBCP analysis, respectively. A trip blank was also utilized. l <br /> The sample was placed on ice and transported under chain of custody to FGL (Le. <br /> Environmental, Stockton. <br /> �itrate was not detects in the water sample. Nitrate is commonly detected in shallow <br /> gradmater_aquifers of the Central Valley. Application of fertilizers, livestock waste, <br /> and untreated septic tank waste can all contribute to nitrate in ground water. Nitrate is <br /> mobile and tends to accumulate in shallow ground water zones. Based on work in the <br /> Sacramento Valley from the early 1900s, it is estimated that under "natural" conditions, <br /> ground water contains nitrate at concentrations no more then about 13.5 mg/L-NO3 (3 <br /> mg/L-N). Nitrate may be increasing in areas with concentrations of 24.75 mg/L-NO3 <br /> (5.5 mg/L-N) or more (Hull, 1984). The US EPA has set the Maximum Contaminant <br /> Level (MCL) for nitrate as NO3 at 45 mg/L. <br /> LOGE 1402 Page 4 <br />