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7h3adwe11&Ro110 <br /> were collected at the depths shown in the boring logs in Appendix C and locations shown on • <br /> Figure 8 of the 1999 Treadwell &Rollo report. Analytical results are presented in Tables 1 <br /> through 4 of that report. <br /> No petroleum fuel hydrocarbon, volatile, or semi-volatile hydrocarbon contamination was <br /> detected in the soil or groundwater samples analyzed during the Treadwell & Rollo investigation. <br /> Arsenic concentrations in soil did not exceed EPA Preliminary Remediation Goals (PRGs) for <br /> Industrial sites. <br /> 1.2.2 Operable Unit 2 <br /> 1.2.2.1 Area 15 <br /> Description <br /> This site, located north of Area 10, is referred to as the 423 North Madison Street site and as the • <br /> Chase Chevrolet Site. The site was originally developed in the early 1900s and redeveloped in <br /> the 1950s for use as an auto repair facility. Currently,the site has several buildings that are <br /> vacant or involved with automobile repair. Areas between buildings are paved with asphalt or <br /> covered with concrete slabs (Figure 4). <br /> Site History <br /> The site was originally developed in the early 1900s and redeveloped in the 1950s for use as an <br /> auto repair facility. Underground storage tanks (USTs), which reportedly stored gasoline, diesel, <br /> and trichloroethane (TCA), have been removed and petroleum hydrocarbon contamination has <br /> been documented (AGE 1997). <br /> 10 <br /> 25970309.DGD 24 August 2000 <br />