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I #10 had only 0.0048 ppm toluene, 0 .37 ppm TPHd, and 0.0004 ppm. <br /> 2 benzene. Petroleum hydrocarbons in samples from the other <br /> 3 domestic wells were present at lower or non-detectable <br /> 4 concentrations. <br /> 5 5. Second Request For Further Investi ation. <br /> 6 Notwithstanding the results of the previous investigations, the <br /> 7 Health Department apparently demanded that additional soil and <br /> 8 groundwater investigations be undertaken by Color Spot. This. <br /> 9 request was apparently made even though SG&D had reported the <br /> 10 results of the October 2989 and January 1990 samplings of the <br /> 11 four groundwater agricultural supply wells at the facility. <br /> 12 Apparently, in response to the Health Department's demur, during <br /> 13 the week of October 8, 1990, SG&D drilled four soil borings to a <br /> 14 depth of 90 feet below grade in order to assess the presence of <br /> 15 TPHd and benzene, toluene, ethyl benzene, and total xylenes <br /> 16 (BTEX) in deeper soils and the groundwater beneath the UST and <br /> 17 install and monitoring well MW-I. <br /> 18 a. Deep aoil SSamn-1 incx. Two soil samples were <br /> 19 collected from each of the four soil borings and analyzed for <br /> 20 TPHd and BTEX. Although xylene was detected at levels (0.008 to <br /> 21 0.012 ppm) marginally above the detection limit, but well below <br /> 22 the typical action level. of 1.75 ppm in the first sample taken <br /> 23 from each boring, no xylene was detected in the deeper soil .. <br /> 24 samples from the four borings (30,, 80 and 90 feet) . No other <br /> 25 contaminants (benzene, ethyl benzene, toluene, or TPHd) were <br /> 26 detected in any of the four soil borings. <br /> 27 b. Groundwater Saglina. Although no sample could <br /> 28 be obtained from MW-1, a grab groundwater sample was also <br /> -4- VM=0L0RSPIV0HNS0N.DEC <br />