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W, <br /> !�'JY;��"�y�` <br /> K6 -2 K4 .•p_."K`i' ., alV" id <br /> r <br /> Y <br /> iry <br /> S . <br /> ' I <br /> i <br /> / a <br /> � t <br /> 1 <br /> { <br /> } 1 <br /> f <br /> testing of 12 samples -or TPH-gasoline detected concentrations up to 3100 <br /> �k ... mg/kg (ppm) ('.able 5). Several weeks later-, 12 samples were analyzed and <br /> found to contain TPH-gasoline at concentrations up to 66 mg/kg (ppm) (Table <br /> '+ 6). <br /> Twenty-four samples were also analyzed for lead anJ eth;llene dibromide (Table <br /> 5). Lead was found to be present: at; levels of 0.053 to .1.10 mg/L (ppb), well <br /> below the lead STLC. Ethylene dibromide was not detected. <br /> Following testing of a single composite sample for RCI (Table 8) these three <br /> r, stockpiles were disposed at the Vasco Road Class III landfill located in <br /> eastern Alameda County. Chain-of-Custody and Requests for Analysis are shown <br /> in Appendix C and laborrtory certificates of analysis are shown in Appendix E. <br /> l <br /> 5.3 OIL PIPING AND UST STOCKPILE <br /> Three hundred and fifty (350) cubic yards of apparently uncontaminated <br /> # material were removed from around four oil USTs (three motor and one used oil . <br /> UST) Subsequent testing of 14 samples for TPN-diesel, BTEX, oil and grease, <br /> chlorinated hydrocarbons, and 17 metals detected sporadic concentrations of <br /> several organic analytes (Table 7). TPH-diesel was found at concentrations up <br /> to 73 mg/kg (ppm) and oil and grease was found at concentrations up to 930 <br /> mg/kg (ppm}. ' No CAN 17 metals were detected at levels above their STLCs i <br /> (Appendix E). No chlorinated hydrocarbons or PCBs were detected (Table 7). <br /> " <br /> { Following.testing of a single composite sample for RCI (Table 8) these three - <br /> �,F stockpiips were disposed at the Vasco Road Class III landfill located in <br /> x.� ,pastern Alameda County. Chain-of-custody and roquest for analysis are shown <br /> { in Appendix C and laboratory certificates of analysis are shown in Appendix B. <br /> L <br /> F 1r 7 <br /> I1 <br /> 't4AAlll :ENG:9199/041591 <br /> r <br />