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October 12,2000 <br /> - q <br /> Job Number:LGoo-312.. <br /> - Page 4 <br /> The depth to ground water at the site was found to be_approximately'80-feet for 1998 (see <br /> Plate 2 and Plate3), The ground water flow direction in 1998'was toward the northwest and <br /> north-northwest witha,gradient of 12-5-feet per mile. <br /> { <br /> A request was submitted to the California Department of-Water Resources(DWR)to <br /> obtain details regarding the existing water well located near the old dai�ry:building or any other <br /> wells.` Ms. Ann Roth'(DWR)located one record for the well near the old dairy building (see <br /> appendix for report). <br /> fil Summary of DWR Information for Water 3Yeu <br /> fDWR report no. 67738 - <br /> State Well Number 1S/9E_lV1 <br /> i Date of completion: 4129/71 <br /> t <br /> Completed well depth: 200;feet. <br /> Well type: Open bottom. <br /> Casing interval: 0 to 186 feet <br /> Casing diameter- 6 518 inches j <br /> Inlet interval. 186 to 200 feet. <br /> Static water depth May 27, 1971: 76 feet. <br /> i <br /> A water sample was obtained from this well on September 26&27, 2000 and sent to FGL <br /> Environmental Laboratory for testing. The samples were tested for the presence of <br /> i dibromochloropropane (DB CP) and Nitrate (NO3)per County requirements. <br /> The test results indicated that DBCP was non-detectable(ND) and nitrate as NO3 was <br /> < < found at 6.8 mg/l(1.5 mg/1-N). The result of the nitrate test indicates the ground water is ' <br /> slightl bove th m1IMMurn contar n vel set b the United States Environmental Protection <br /> Agency of 45 mg/1­NO3 for nitrate(or 10 mg/1 as Nitrate N).£ <br /> y, The resence of nitrates and DBCP n t Warn shallow ound- uifers <br /> in San Jo in County and other parts of the trap ey. strate sources in ground water <br /> ,r occur as a result of the application of fertilizers, livesto k waste, and untreated septic tank waste. ' <br /> S <br /> Nitrate is: mobile and often accumulates in the-shallow ound-water zones. In the early 1900's, <br /> natural levels of nitrate in ground water were measur in forty-three.(43)wells throughout the <br /> - E i e paRsoy <br /> ?saw. <br /> r b <br />