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Total Petroleum Hydrocarbons (TPH)-as-gasoline, toluene, ethylbenzene, and xylenes were <br />' detected in the soil sample collected from beneath a disintegrating joint in the underground piping <br /> (P1), and all three soil samples collected from beneath the former UST Benzene was only <br />' detected in the soil sample collected at 13 feet from beneath the north end of the former UST, and <br /> methyl tertiary butyl ether (MTBE) was only detected in the soil sample collected at P1 The other <br /> soil sample collected along the former underground piping, and the soil sample collected from <br /> beneath the former dispenser did not contain detectable concentrations of gasoline compounds <br />' 1 2 2 Prelimina Investigation and Evaluation <br /> On April 16, 2001, Ramage Environmental published Preliminary Investigation and Evaluation <br />' Report, which documented the results of soil and groundwater-grab sampling from three on-site <br /> Geoprobe® soli borings (B-1, B-2 and B-3) The boring locations are shown on Figure 2 <br />' Results of the investigation indicated that soil and groundwater beneath the site had been <br /> impacted by gasoline hydrocarbons The soil sample analytical results are summarized in Table <br />' 1, and the groundwater analytical results are included in Table 2 <br /> 1 2 3 Monitoring Well Installations and Sensitive Receptor Survey <br /> On September 27, 2002, Ramage Environmental published Monitoring Well Installation Report, <br />' which documented the installation of three on-site groundwater monitoring wells and the survey of <br /> potential sensitive receptors within 2,000-feet of the site <br />' In soil, only two samples contained detectable concentrations of gasoline hydrocarbons <br /> Laterally, the extent of impacted soil appeared to be limited to the vicinity of the former UST <br />' system Vertically, the extent of impacted soil appeared to be defined to a depth of approximately <br /> 20 feet below ground surface (bgs) The soil sample analytical results are included in Table 1 <br />' Ing roundwater, only the sample collected from MW-1 contained detectable concentrations of <br /> gasoline compounds Given a groundwater flow direction toward the northeast, the lateral extent <br />' of impacted groundwater appeared to be defined downgradient by MW-2 and MW-3 The <br /> groundwater analytical results are summarized in Table 2, and the well construction details and <br />' groundwater monitoring data are summarized in Table 3 <br /> 4 <br /> 1 <br />