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REM MONO g amara � . it i i 1 3 testing of 12 samples for TPH-gasoline detected concentrations up to 3100 m9/k9 (ppm) (Table 5)• Several weeks later, 12 samples were analyzed and + Found to contain TPH-gasoline at concentrations up to 66 mg/kg (ppm) (Table 6). I Twenty-four samples were also analyzed For lead and ethylene dibromide (Table. 5). Lead was found to be present at levels of 0.053 to 1.10 mg/L (ppb), well below the lead STLC. Ethylene dibromide was not detected. Following testing of a single composite sample for RCI (Table 8) these three �» stockpiles were disposed at the Vasco Road Class III landfill located in r: eastern Alameda County. Chain-of-Custody and Requests for Analysis are shown ti. in Appendix ,C and laboratory certificates of analysis are shown in Appendix E. raY 5.3 OIL P?PING AND UST STOCKPILE (Y Three hundred and fifty (350) cubic yards of apparently uncontaminated material were removed From around four oil USTs (three motor and one used oil UST). Subsequent testing of 14 samples for TPH-diesel, BTEX, oil and grease, chlorinated hydrocarbons, and 17 metals detected sporadic concentrations of several organic analytes (Table 7). TPH-diesel was Found at concentrations up 1 A., to 73 mg/kg (ppm) .and .'oil and grease was found at concentrations up to 930 mg/kg (ppm). N� CAM 17 metals were detected at levels above their .STLCs f s (Appendix Q. No chlorinated hydrocarbons or PCBs were detected (Table 7). 7 '..., Following-testing of a,single composite sample for RCI (Table 8) these three stockpiles were disposE!d at the Vasco Road Class III landfill. loca}ed.in eastern Alameda County. Chaim-of-custody and `'request for an-lysis are shown it in Appendix C and laboratory certificates of analysis are shorn in Appendix B. .. _, 1 7 "A:ENG:9199/041591 F� ■N S