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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 i (P1), and all three soil samples collected from beneath the former UST. Benzene was only ii 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 concentrations of6soline compounds above laboratory reporting limits. i 1.2.2 Preliminary Investigation and Evaluation ?� i I 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° soil borings (B-1, B-2 and B-3). The boring locations are shown on Figure 2. Results of the investigation indicated that soil and groundwater beneath the site had been 9 impacted by gasoline hydrocarbons. The soil sample analytical results are summarized in Table 1, and the groundwater analytical results are included in Table 2. ,i 1.2.3 Monitoring Well Installations and Sensitive Receptor_Sul ev On September 27, 2002, Ramage Environmental published Mo. Well Well Installation Report, j which documented the installation of three on-site groundwaterjmonitoring wells and the survey of ;. potential sensitive receptors within 2,000-feet of the site. i In soil, only two samples contained concentrations of gasoline hydrocarbons above laboratory reporting limits. Laterally, the extent of-impacted soil appearecljo be limited to the vicinity of the former UST system. Vertically, the extent of impacted soil appeared to be defined to a depth of I '? approximately 20 feet below ground surface (bgs). The soil sample analytical results are included i in Table 1. I In groundwater, only the sample collected from MW-1 contained concentrations of gasoline compounds above laboratory reporting limits. Given a groundwater flow direction toward the _ northeast, the lateral extent of impacted groundwater appearedtobe`'defined downgradient by MW-2 and MW-3. The groundwater analytical results are summarizedi in Table 2, and the well construction details and groundwater monitoring data are summarized in Table 3. I i i i 5 i