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i <br /> q <br /> Based on analytical results, soil and groundwater beneath the site have been impacted by <br /> gasoline and kerosene hydrocarbons. In soil , the highest concentrations of petroleum <br /> hydrocarbons were detected in the samples collected from G-3, near the south end of the former <br /> 1 , 000-gallon gasoline UST (UST #2) . The soil sample analytical results are summarized in Table <br /> 1 . In groundwater, all three samples contained detectable concentrations of TPH-as-gasoline , <br /> TPH-as-kerosene , and BTEX compounds . MTBE and the other oxygenate compounds were not <br /> detected in any of the soil or groundwater samples. The groundwater analytical results are <br /> summarized in Table 2 . <br /> I <br /> i <br /> Based on the presence of petroleum hydrocarbons within the unsaturated (vadose) , capillary <br /> fringe and saturated soil intervals at G-3, the primary source of the impacts appears to be the <br /> former UST #2 . The bulk of the hydrocarbon mass is concentrated in subsurface soil beneath the <br /> south end of former UST #2 , and to the east near the former dispenser island . <br /> Vertically, the extent of impacted soil is not defined at the total drilling depth of 35 feet bgs. <br /> Laterally, the extent of impacted vadose zone soil is defined to the south by G-2 and to the east by <br /> G- 1 . The lateral extent of impacted capillary fringe and saturated zone soil is only defined to the <br /> P P rY 9 Y <br /> south by G-2 . The extent of impacted groundwater at the groundwater table is not defined . <br /> Concentrations of petroleum hydrocarbons in groundwater appear to decline to the south . <br /> 6 <br />