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Illy <br /> s a <br /> VIM- 1M� <br />, <br /> 202!699-7004 <br /> Lammersville School District 15 <br /> July 16, 1990 <br /> TABLE 6 <br /> LABORATORY ANALYSIS OF GROUNDWATER (ppb) <br /> --- (samples obtained 6121190) <br /> Well Toluene E!h l�?e�e XX 1r�enes <br /> I.D. TPH-G TPH D Benzene — <br /> -- <0.3 <0.3 <0.3 <0.6 <br /> MW-1 18 ¢i 0 <br /> MW-2 3,000 <10 <br /> 15 6 37 8 <br /> MW-3 21 <10 <br /> <0.3 <0.3 <0.3 <0.6 <br /> MW-4 17 <10 <br /> <0.3 <0.3 <0.3 <0.6 <br /> MW-5 30 <i0 <br /> <0.3 <0.3 <0.3 <0.6 <br /> 830 1,400 2,800 <br /> MW-6 17,000 <10 <br /> 4,800 <br /> MW-733 <10 <0.3 <br /> <0.3 <0.3 <0.6 <br /> MW-8 19 <10 <0.3 <br /> <0.3 <0.3 <0.6 <br /> 8.0 CONCLUSIONS <br /> Results of BTEX and TPH-G analyses performed on the soil samples collected from MW-6,MW-7. <br /> and MW8 revealed the presence of benzene,toluene,ethylbenzene,and xylene at concentrations of 0.339 <br /> ppm, 0.07 ppm, 0.12 ppm,and 0.28 ppm, respectively, and TPH-G at a concentration on 4 ppm in the <br /> sample from MW 6 only. The sail sample collected from MW-6 was obtained just below the surface of the <br /> le to !heir in the <br /> water table; therefore, the presence of these compounds may be attributaband from MW 1 <br /> groundwater from this well. None of the soil samples obtained from MW-7 and MW-8, <br /> -. through MW-5 drilled during the previous investigation, contained petroleum hydrocarbons. <br /> Analytical results of the groundwater sample obtained from MW-6 (located downgradient of the <br /> -gasoline_tuei dispensers) revealed the presence of benzene, toluene, ethylbenzene, and xylene all <br /> sample co <br /> exceeding their respective drinking water MCLS. Additionally,the"groundwater collected <br /> GItOUMVATER <br /> TECHNOLOGY.INC. <br />