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Appendix D Direct Push Boring Investigation <br /> Phase 11 ESA Multi-Modal Station'Six-Block Protect' <br /> January 6,2003 <br /> Page 15 of I5 <br /> GBK6-931-1 The groundwater sample collected from GBK6-931-1 also indicates the presence of <br /> acetone, 1,3,5-trimethylbenzene, tert-butylbenzene, 1,2,4-tnmethylbenzene, 1,2-dichlorobenzene, <br /> naphthalene, and 4-methylphenol Elevated concentrations of TPH-G, TPH-D, and TPH-MO were <br /> detected in soil samples collected from borings GBK6-931-1 and GBK6-931-2 at a depth of 15 feet bgs <br /> Detections of TPH-D and TPH-MO tend to correspond to detections of 4-methylphenol The higher <br /> concentration of TPH-G (230,000 mg/kg) was detected at GBK6-931-1 indicating that GBK6-931-1 is <br /> located closer to the source of the contamination <br /> i <br />