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I <br />' Idlewild Market - O.B.S. <br /> June 21, 1993 <br /> Page -7- <br /> The laboratory analyses of the tank removal samples showed <br />' 210 mg/kg (TPH-G) and BTEX constituents ranging from "none <br /> detected" (benzene) to 1, 700 µg/kg (xylene) in the soil sample <br /> Icollected beneath the former location of T3 . Xylene was detected <br /> at 5. 6 µg/kg in the sample collected beneath T1 . No TPH-G or <br /> BTEX were detected beneath T2 or T4. Neither EDB nor total lead <br /> were detected in any of the tank removal samples . <br /> The laboratory analyses of the over-excavation samples <br /> showed 1,400 mg/kg TPH-G, 5 . 3 mg/kg EDB, and BTEX constituents up <br /> to 65,000 lig/kg (xylene) in the north sidewall sample. No TPH-G, <br /> BTEX, EDB or total lead were detected in the remaining over- <br /> excavation samples at or above laboratory detection limits . TPH- <br /> G was detected in the over-excavation stockpile samples at 420 <br /> mg/kg and 680 mg/kg. Laboratory report sheets indicating <br /> Ianalytical methods used, detecta.on limits, and the results of the <br /> analyses are presented in Appendix B. <br /> 5.0 CONCLUSIONS AND RECOM ONDAATIONS <br /> The laboratory analyses and field observations indicate that <br /> gasoline contamination remains in the soil on the north sidewall <br /> of Pit 1. 1,400 mg/kg TPH--G was detected in the soil sample <br /> Icollected from the north sidewall at a depth of approximately 10 <br /> feet below the ground surface. A patch of grey petroleum stained <br /> soil was noted on the north sidewall from the 6 foot depth to a <br /> I <br /> CONDOR <br />