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I -29 December 1999 AGE-NC Project No 97-0312 Page 7 of 9 ppb,27 ppb,0 76 ppb, 12 ppb and 0 74 ppb,respectively Petroleum hydrocarbons were not detected In the remaining wells sampled s Oxygenates were not detected In the water samples collected from wells UST-2 through UST-6 1,2- Dlchloroethane (1,2-DCA) and,vinyl acetate were detected in the sample collected from UST-5 at concentrations of 1,000 ppb and 22 ppb, respectively Other volatile organic compounds were not detected in ground water samples from the site The laboratory report (MAI sample Nos 22093 - 22097) and chain-of-custody form are included In Appendix B Analytical results of water samples collected In September 1999 are summarized on Table 2 The analytical results of all water samples are summarized on Tables 3 and 4 ' 43 STRATIGRAPHY Slit was encountered In 95 of the 108 soil samples collected during the September 1999 drilling ' Silty fine sand was encountered In the samples collected from a depth of 10 feet bsg In borings B19, B21 and B25, from a depth of 20 feet in boring B18, from a depth of 25 feet In boring s B19, B21, B24 and B25, from a depth of 40 fet In boring B25, from a depth of 65 feet in boring B 18 and from lie a depth of 70 feet in borings B 19 and B26 Clay was encountered at a depth of 50 feet In boring B27 Boring logs are Included In Appendix A 44 ANALYTICAL RESULTS OF SOIL SAMPLES ' r vaporOr anlc was detected In 41 of the 106 samples collected from borings B18 through B29 at g concentrations as, high as 143 ppm (B20 at 5 feet bsg) Organic vapor was not detected In soil samples collected from borings B23, B25,B28 and B29 PID readings are summarized on Table 5 T TPH-g was detected In only one sample (B21-10) at a concentration of 6 7 parts per million (ppm ' reported as milligrams per kilogram) TPH-d was detected in 11 of the 39 samples analyzed at concentrations as high as 660 ppm (B21-10) Benzene was detected In four of the 39 samples at concentrations as high as 0 057 ppm Toluene was detected In sample B21-10 at a concentration of ' 0 091 ppm Ethylbenzene and xylenes'were not detected In the soll samples analyzed from the Y September 1999 drilling I " I A i , MTBE was detected In three of seven soil samples analyzed by EPA Method 8260 at concentrations as high.as 18 ppm MTBE was also detected In one additional sample by EPA Method 8020 Other oxygenates were not detected Analytical results of soil samples are summarized on Tables 6 and 7 ' The laboratory report (MAI Sample Nos 22522-22535) and chain-of-custody forms are Included in t� Appendix D Advanced CeoEnvironmental,Inc , v I r r i r