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11 �L y.s air ,r ;ate <br /> !b. 11i be i j +4 :1. U. ,tT.vL.u✓":.'k <br /> 1 <br /> Y.T.-." <br /> 4 1 <br /> f <br /> Ms. Diane Hinson <br /> March 6, 1990 <br /> Page 4 <br /> Based on field screening results,selected soil samples obtained from the borings were submitted for <br /> laboratory analysis of BTEX and TPH(g) using EPA and DHS approved methods. A total of eight <br /> soil samples were submitted for laboratory analysis. Analytical results of soil samples submitted by <br /> Delta are summarized in Table I Copies of certified analytical reports are contained in Enclosure D. <br /> Sail sample analytical results indicate nondetectable levels of petroleum constituents in samples <br /> collected from borings MW-1.HW-4 and MW-6. A soil sample collected from boring MW-3 at 41 <br /> feet below made also contained nondetectable levels of petroleum constituents. The highest TPH(g) <br /> concentrations were contained in soil samples from soil boring MW-2 at 26 feet below grade(89 ppm) <br /> and from baring MW-7 at 31 feet below grade (110 ppm). <br /> TABLE 2 <br /> Soil Boring Soil Sample Analytical Results <br /> Concentrations in parts per million (ppm) <br /> SampI; Depth to Collection Ethyl- <br /> tio feet below gtag& Benzene Toluene benzene Xvlenes TPH(ela <br /> MW1-5 26 <0.05 <01 <0.1 <0.1 <1 <br /> MW1-7 36 <0.05 <MI <01 <0.1 <1 <br /> MW2-S 26 1.2 1.9 0.96 5.2 89 <br /> MW2-8 41 I.5 4.3 1.1 5.7 36 <br /> MW3-5 26 <0.05 <0.1 <0.1 <0.1 I-3 <br /> MW3-8 41 <0.05 <01 <0.1 <01 <1 <br /> MW4-5 26 <0.05 <0.1 <0.1 <0.1 <1 <br /> MW4-7 36 <0.05 <O.I <01 <01 <1 <br /> MW5-6 26 <O.05 <0.1 <0.1 <br /> MWS-6 31 US <0.1 <03 <0.1 17 <br /> MW6-7 36 <0.05 <0.1 <0.1 <0.1 <I <br /> MW7-4 21 0,090 <0.1 <O.I <0.1 4.6 <br /> MIA7.6 31 1.8 4.9 1.8 12 110 <br />