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1 <br /> 1 - 1 <br /> 24 October 1997 <br /> AGE-NC Project No 96-0235 f <br /> Page 5 of I 1 <br /> sampling assembly A modified bailer consisting of Teflon tubing and a check valve were used to <br />' bring the sample to the surface Each ground water sample was collected into 40-m1 VOA vials <br /> containing approximately 0 5 ml 18% hydrochloric acid as a preservative, and one 1-liter amber <br /> bottle without preservative - ' I - <br /> The grab ground water samples were labeled, logged on a chain-of-custody form, stored in a chilled <br /> container containing ice and transported: to MAI Selected samples were analyzed for TPH-g and <br /> 1 TPH-d in accordance with EPA method 5030/8015m, for BTE&X and MTBE in accordance with _ <br /> EPA method 602, and for TRPH in accordance with EPA method 418 1 <br /> 7 4 EQUIPMENT DECONTAMINATION <br /> IAll sampling tools, screens and brass sleeves used for sample collection were thoroughly rinsed`with <br /> clean water after'washing with a solution of Alconox All Geoprobe rods were cleaned prior to <br /> advancement in each probe location All probings were backfilled over their entire depth with <br /> portland cement <br /> i <br /> 7 5 FINDINGS <br /> A total of eight soil samples were analyzed Benzene, ethylbenzene and xylenes were detected in <br /> sample 137-30 at concentrations of 0 023 ppm, 0 032 ppm, and 0 050 ppm, respectively Petroleum <br /> hydrocarbons were not detected in the other soil samples analyzed <br /> 1 1 S <br /> Xylenes and TPH-d were the only petroleum hydrocarbons detected in the two grab ground water , <br /> samples Xylenes were detected in B6/11-19-96 at 0 86 ppb and in B8/11-19-96 at 1 4 ppb, TPH-d- <br /> was detected at concentrations'of 140 ppb and 74 ppb in B6/11-19-96 and B8/11-19-96,respectively <br /> The chromatograms for the diesel components did not have a recognizable pattern <br /> TRPH was not detected in any soil or ground water samples analyzed Analytical results of grab <br /> water samples are shown in Tables 1 and 2, analytical results of soil samples are shown in Table 6 <br /> The laboratory report(MAI Sample Nos 71481 through 71490),quality control report and chain-of- <br /> custody are included in Appendix C <br /> Y <br /> 8.0. PURGE WATER AND DECON WATER DISPOSAL <br /> ` On 10 April 1997, AGE personnel visited the site and sampled drums of purge water and <br /> decontamination water for disposal purposes Eight drums of water were stored onsite <br /> Advanced C.eoEn\Ironmental,Inc <br />