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I <br />' Petroleum hydrocarbons have been detected in each sample collected from the deep well <br /> (MW-6) since It was Installed in November 2001 The TPH-g-Impact to the deeper ground <br />' water zone has not been defined toward the south, east and north Additionally, the <br /> concentration of TPH-g have Increased vertical, at the former UST area, supporting a direct <br /> vertical migration route beneath the site (grab ground water samples CPT 1-117 TPH-g at <br />' 140,000 µg/1) <br /> • BTEX constituents were detected in water samples collected from wells In the former UST <br />' excavation at the site at concentrations as high as 23,000 µg/1 (toluene) The benzene <br /> concentrations In the same well was as great as 11,000 µg/1 The vertical extent of BTEX <br /> follows the phenomenon observed with gasoline, Increasing with depth <br />' 0 1,2-DCA was detected in ground water samples collected from ten of the fifteen wells at the <br /> site at concentrations as high as 190µg/l(EX-1) Under the same analogy,the dissolved 1,2- <br /> DCA concentrations In ground water Increase with depth of sampling The highest <br /> concentration of 1,2-DCA detected on the site was In the sample CPT-01-113-117 at <br /> 250µg/1 The detected concentrations of 1,2-DCA were above the MCL 1,2-DCA-impacted <br /> shallow ground water has not been defined toward the east, and 1,2-DCA-impacted deeper <br /> ground water zone has not been defined toward the south, east and north <br /> • Additionally,EDB was detected In two samples from the site Soil sample MW-6 at 22 feet <br /> Ihad an EDB detection of 460 µg/kg and dissolved EDB was detected at a concentration of <br /> 90 µg/1 In CPT-01-113-117 <br /> I <br /> I <br /> • <br /> IAdvanced GeoEnvironmental,Inc <br /> I <br /> I I <br />