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1 Readwell&Rolb <br /> No significant metal concentrations were detected in soil collected at Area 2A during this <br /> investigation. However, two soil samples collected during the 1996 soil sampling program <br /> contained elevated concentrations of arsenic at 69 mg/kg and 130 mg/kg. <br /> Groundwater contamination was found in 10 of the 11 monitoring wells sampled. Well MW-8, <br /> located in the northeast corner of Area 2A, was the only well that did not contain petroleum fuel <br /> ' hydrocarbons, and semivolatile compounds. The highest concentration of TPH as gasoline was <br /> found at well MW-13 (130 mg/1), located north of the former L&M Petroleum site. MW-6, <br /> located in the eastern portion of the site in the general area of the former Morton Paint Company, <br /> had 88.9 mg/l TPH as gasoline. Other significant concentrations of TPH as gasoline were found <br /> 1 in wells MW-1 (19.5 mg/1), and MW-9 (5.53 mg/1). <br /> 1 TPH as diesel was found at the greatest concentrations at wells MW-13 (11 mg/1), MW-14 <br /> (13 mg/l and duplicate sample 2AMW16 at 18 mg/1), and MW-9 (6.3 mg/1). TPH as motor oil <br /> was found MW-14 at 4.7 and 3.5 mg/1. <br /> ' BTEX compounds were highest at MW-9 and MW-13, with benzene at 15 mg/l at MW-13 and <br /> 3.16 mg/l at MW-9. <br /> While no halogenated volatile organic compounds were detected in groundwater at Area 2A, <br /> several fuel-related volatile organic compounds were detected at wells MW-1 and 9. These <br /> compounds, none of which exceeded 1.01 mg/1, included 1,2,4-trimethylbenzene (1.01 mg/1) and <br /> naphthalene (0.52 mg/1) at MW-2A and 1,2,4-trimethylbenzene at MW-9. <br /> No significant metal contamination in groundwater was detected in any wells at Area 2A. <br /> Test pits 2ATP-1 and 2ATP-2 were opened in the area of the geophysical anomalies found on the <br /> former Morton Paint facility. While buried debris and utility lines were uncovered,there was no <br /> ' evidence of underground storage tanks. Test pit 2ATP-4, opened in the general area of the <br /> boundary between the former L&M Petroleum and Union Oil facilities, exhibited a strong <br /> 14 <br /> ' 25970119.DGD 13 December 1999 <br />