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• <br /> University of California Soils publication, shows the soil types <br /> in the area. The Tracy Gas field is about 2 miles to south; it <br /> produces dry gas from sands of Upper Cretaceous age at depths of <br /> 41000 to 5,000 feet. <br /> DEF'TH TO GROUNDWATER: Water was not encountered at a depth of S <br /> feet during removal of the LUST, and is reported to be at about <br /> 10 ' bgl in the area. A review of semi-annual water table maps <br /> prepared by the County Flood Control District indicate that the <br /> water table has been as high as the surface In past years -- the <br /> sprang of 1983 in particular; Plate V is a portion of the San <br /> Joaquin County Flood Control Distract map showing lanes of equal <br /> elevation. There are no water wells in the immediate area, and <br /> therefore good control is lacking. As mentioned earlier , crops <br /> are watered by open ditch , and domestic water is piped in. Plate <br /> VI shows the locations of control wells used for constructing the <br /> water level maps. <br /> WATER DUALITY: Groundwater in this area is unsuited for domestic <br /> use or watering livestock due to the high concentrations of <br /> chlorides. Nitrates are 5mg/l , but boron is high, >2 mg/l . <br /> Salt-tolerant crops such as alfalfa, tomatoes and beans can be <br /> • grown, however. <br /> DETAILS OF PRIOR WORD:: On august 7, 1991 , Jam Thorpe Oil removed <br /> a 350 gallon UST which had contained leaded gasoline. The tank <br /> was empty at the time of removal . There are no records <br /> concerning when the tank was installed, or years it was in <br /> service., but It had not been used at least since November, 198S, <br /> when the Bank took possession of the property. <br /> The removed tank was in very poor condition, and there was <br /> visable contamination noted; refer to Exhibit B. A soil sample <br /> was taken from beneath the site of the tank at a depth of B by a <br /> Jim Thorpe Oil employee under the supervision of EHD personel , <br /> and transported under proper chain of custody, (see Exhibit C, ) <br /> to Weston Analytical for analysis. The sample was tested for <br /> BTEX, TPH-G, EDB, and total lead. The results of those tests are <br /> shown in Table I . There was no water or dampness observed in the <br /> bottom cif the excavation at S feet. <br /> The hole was filled in with the removed spoil to avoid possible <br /> in3ury to humans or animals. A visit to the site on September 11 <br /> revealed no evidence of surface contamination or odors. <br /> PROGRAM: <br /> . Because groundwater 1n this area is approximately 10 feet below <br /> 2 <br />