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former tank and excavation area. As such, the former tank and excavation area is no longer <br /> directly accessible. <br />' 2.1.2 Site 3 <br /> Site 3, which is located approximately 750-feet west of Site 2, had two 12,000-gallon tanks <br /> (Figure 3), identified on a PHS/EHD inspection report as Tank#1 and Tank#4, both of which <br /> contained unleaded gasoline. The tanks were removed on February 16, 1988 by SSSE. No <br />' information 1s available as to the age or condition of the tanks, or whether any associated <br /> product piping was removed The inspection report includes a sketch which shows two <br />' "pumps" located south of the tanks (B&R, 1998, Appendix A), presumably dispensers for the <br /> two tanks Approximately 180 cubic yards of soil were excavated with the tanks to a depth <br /> of about 11 feet bgs A total of four soil samples were collected by SSSE during the removal <br />' of the tanks; one sample from beneath the north and south ends of each of the two tanks. <br /> Although the exact depths of the samples are not listed, the PHS/EHD inspection report states <br /> the samples were collected "approximately 2 feet below the bottom of the tanks," which <br />' would place them about 13 feet bgs. No groundwater was encountered during excavation or <br /> sampling. Gray soil discoloration and strong petroleum product odor were detected at the <br />' southern end of both tanks. Minor product odor was detected at the north end of Tank #1, <br /> while no odor was detected at the north end of Tank #4. <br /> Four additional soil samples were collected by SSSE on March 15, 1988. These samples were <br /> collected from the same locations as during the tank pulls, but from a depth of 16 feet bgs <br /> A review of the PHS/EHD inspection report indicates that the inspector found "grey soil <br /> observed on all samples with petroleum-like odor." The report also notes that no groundwater <br /> was encountered to a depth of 16 feet bgs. <br />' Subsequent to the removal of the tank, the area over the former tanks and excavation has been <br /> paved with concrete <br /> 1 <br />' 2.2 SUNEWARY OF PREVIOUS SITE CHARACTERIZATION WORK <br /> Soil samples collected from beneath the tanks were submitted to California Water Laboratories <br />' for analysis All soil samples were analyzed for total petroleum hydrocarbons as gasolene <br /> (TPHg) and total petroleum hydrocarbons as diesel (TPHd) by EPA method 8020, and <br /> benzene, toluene, and total xylenes (BTX) by EPA method 8020. Selected samples were <br />' analyzed for ethylene dibromide (EDB) by EPA method 8010, and total lead (analytical method <br /> for lead not specified on laboratory reports, see R&R, 1998, Appendix A). Analytical results <br /> (Table 1) indicated low levels of PHCs detected in the initial soil samples, primarily in the <br />' 3 98117UNVRPTSIMUSTIN RPT <br /> JAWBOYARAN & ROSS, INC <br />' Environmental SClentLStS & @ngtneers <br />