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r <br /> f <br /> f 1 " <br /> ' 26 March 1999 <br /> AGE-NC Project No 9i '0426 , <br /> Page 4 of 6 <br /> a depth of 50 feet bsg in probing B I Silt was encountered in the remauung samples collected at the <br />' site Ground water was measured at a depth of 23 feet'bsg in probings B 1 and B4, prior to collection <br /> of water samples in these probmgs Boring logs are included in Appendix A f <br /> 42 ANALYTICAL RESULTS OF SAMPLES s <br /> Organic vapor was detected at concentrations as high as 6971 ppm in samples collected from boring <br /> B3 (20 feet bsg) Organic vapor was detected at concentrations as,high as 9 ppm, 1 ppm, 3 ppm and <br />' 1 ppm in soil samples collected from probings B1, B2, B4 and B5, respectively Organic vapor and <br /> hydrocarbon odor were not detected,in samples collected from`probing B6 <br /> TPH- was detected at a concentration'of 2 6 arts per million , m reported as m m In <br />' g p � (ppT, P fig) piping <br /> g <br /> sample D-1 Other petroleum hydrocarbons were not detected in the piping samples collected <br />' TPH-g was detected at concentrations of 3,700 ppm and 28 ppm in the samples collected from <br /> depths of 20 and 30 feet bsg in probing°B3 Toluene, ethylbenzene and xylenes were detected In <br /> lie <br /> these samples at concentrations as high as 3 O,ppm, 41 ppm and 120 ppm, respectively (B3-20) <br /> Benzene was not detected in soil samples collected at the site Petroleum hydrocarbons and <br /> oxygenated compounds were not detected xn the remaining soil samples analyzed from the site <br />' Analytical results of soil samples are summarized on Table 1 , <br /> , <br /> F t <br /> TPH-g was detected in grab water samples collected from probmgs B 1,B3 and BS at concentrations ' <br />' of 250 parts per billion (ppb,, reported as Micrograms per irtei), 12,000 ppb and 220 ppb, - <br /> respectively BTEX were detected in the grab water sample collected from probing Bl, at <br /> concentrations of 32 ppb, 1'7 ppb, 12'ppb and 6 0 ppb, respectively Ethylbenzene and xylenes were , <br />' detected In the water sample collected from probing B3 at concentrations of 200 ppb and 720'ppb, <br /> respectively Other petroleum hydrocarbons and oxygenated compounds were not detected in the <br /> grab water samples collected at the site 'Analytical'results of grab water samples are siimmarized <br />' on Table 2 The laboratory reports (AAL Batch Nos 98-0825-014 and 98-1106-032 and MAI, <br /> Sample Nos 97525-97536) and chain-of-custody form"s are included in Appendix SB <br /> t i <br /> 5.0. SUMMARY AND CONCLUSIONS { <br /> Y,, r <br /> Based upon data collected from, the site, AGE concludes the following <br />' • ' Petroleum hydrocarbons were previously detected at a concentration of 11,000 ppm in a soil <br /> . sample collected at a depth of 10 feet,bsg during the removal of USTs at the site Petroleum <br /> hydrocarbons were not detected in soil samples collected from depths of 25 and 30 feet bsg <br /> - Advanced GeoEnvironmental,Inc <br /> 1 <br /> h <br /> r i <br />