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Total Petroleum Hydrocarbons (TPH)-as-gasoline, toluene, ethylbenzene, and xylenes were detected in the soil sample collected from beneath a disintegrating joint in the underground piping (P1), and all three soil samples collected from beneath the former UST Benzene was only detected in the soil sample collected at 13 feet from beneath the north end of the former UST, and methyl tertiary butyl ether(MTBE) was only detected in the soil sample collected at P1 The other soil sample collected along the former underground piping, and the soil sample collected from beneath the former dispenser did not contain detectable concentrations of gasoline compounds 1 2 2 Prelimina Invests ation and Evaluation On April 16, 2001, Ramage Environmental published Preliminary Investigation and Evaluation Report, which documented the results of soil and groundwater-grab sampling from three on-site Geoprobe® sod borings (B-1, B-2 and B-3) The boring locations are shown on Figure 2 Results of the investigation indicated that sod and groundwater beneath the site had been impacted by gasoline hydrocarbons The soil sample analytical results are summarized in Table 1, and the groundwater analytical results are included in Table 2 12 3 Monitorina Well Installations and Sensitive Receptor Surve On September 27, 2002, Ramage Environmental published Monitoring Well Installation Report, which documented the installation of three on-site groundwater monitoring wells and the survey of potential sensitive receptors within 2,000-feet of the site In soil, only two samples contained detectable concentrations of gasoline hydrocarbons Laterally, the extent of impacted soil appeared to be limited to the vicinity of the former UST system Vertically, the extent of impacted soil appeared to be defined to a depth of approximately 20 feet below ground surface (bgs) The soil sample analytical results are included in Table 1 In groundwater, only the sample collected from MW-1 contained detectable concentrations of gasoline compounds Given a groundwater flow direction toward the northeast, the lateral extent of impacted groundwater appeared to be defined downgradient by MW-2 and MW-3 The groundwater analytical results are summarized in Table 2, and the well construction details and groundwater monitoring data are summarized in Table 3 4