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110 2nd Avenue Sou, 37, Pacheco, CA 94553-5560 <br />MCCAMPBELL ANALYTICAL INC. Telephone : 925-798-1620 Fax: 925-798-1622 <br />24 hUp://www.mccampbell.com E-mail: main@mccampbell.com <br />Advanced GeoEnvironmental <br />4005 North Wilson Way <br />Stockton, CA 95205 <br />Client Project ID: Tradeway Chevrolet <br />Date Sampled: 06/01-06/02/99 <br />Date Received: 06/03/99 <br />Client Contact: Gary Dickenson <br />Date Extracted: 06/03/99 <br />Client P.O: <br />Date Analyzed: 06/03-06/04/99 <br />Gasoline Range (C6 -C12) Volatile Hydrocarbons as Gasoline*, with Methyl tert-Butyl Ether* & BTEX* <br />EPA methods 5030, modified 8015, and 8020 or 602; California RWQCB (SF Bay Region) method GCFID(5030) <br />Lab ID <br />Client ID <br />Matrix <br />TPH(g)' <br />MTBE <br />Benzene <br />Toluene <br />Ethylben- <br />zene <br />Xylenes <br />% Recovery <br />Surrogate <br />12493 <br />P-17 <br />W <br />ND,i <br />ND <br />ND <br />ND <br />ND <br />ND <br />105 <br />12494 <br />P-12 <br />W <br />ND <br />--- <br />ND <br />ND <br />ND <br />ND <br />106 <br />12495 <br />P-6 <br />W <br />ND,i <br />--- <br />ND <br />ND <br />ND <br />ND <br />107 <br />12496 <br />P-17-10.5' <br />S <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />101 <br />12497 <br />P-17-30.5' <br />S <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />99 <br />12498 <br />P-16-10.5' <br />S <br />ND <br />--- <br />ND <br />ND <br />ND <br />ND <br />101 <br />12499 <br />P-16-30.5' <br />S <br />ND <br />--- <br />ND <br />ND <br />ND <br />ND <br />102 <br />12500 <br />P-15-10.5' <br />S <br />ND <br />--- <br />ND <br />ND <br />ND <br />ND <br />102 <br />12501 <br />P-14-10.5' <br />S <br />ND <br />-- <br />ND <br />ND <br />ND <br />ND <br />101 <br />12502 <br />P-13-10.5' <br />S <br />ND <br />--- <br />ND <br />ND <br />ND <br />ND <br />104 <br />12503 <br />P-12-10.5' <br />S <br />ND <br />--- <br />ND <br />ND <br />ND <br />ND <br />99 <br />12504 <br />P-11-10.5' <br />S <br />ND <br />--- <br />ND <br />ND <br />ND <br />ND <br />100 <br />12505 <br />P-10-10.5' <br />S <br />ND <br />--- <br />ND <br />ND <br />ND <br />ND <br />100 <br />12506 <br />P-9-10.5' <br />S <br />ND <br />--- <br />ND <br />ND <br />ND <br />ND <br />102 <br />Reporting Limit unless <br />otherwise stated; ND <br />means not detected above <br />the reporting limit <br />W <br />50 ug/L <br />5.0 <br />0.5 <br />0.5 <br />0.5 <br />0.5 <br />S <br />1.0 mg/kg <br />0.05 <br />0.005 <br />0.005 <br />0.005 <br />0.005 <br />*water and vapor samples are reported in ug/L, wipe samples in ug/wipe, soil and sludge samples in mg/kg, and all TCLP and SPLP extracts <br />in ug/L <br />"cluttered chromatogram; sample peak coelutes with surrogate peak <br />'The following descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not responsible for their <br />interpretation: a) unmodified or weakly modified gasoline is significant; b) heavier gasoline range compounds are significant(aged <br />gasoline?); c) lighter gasoline range compounds (the most mobile fraction) are significant; d) gasoline range compounds having broad <br />chromatographic peaks are significant; biologically altered gasoline?; e) TPH pattern that does not appear to be derived from gasoline (?); f) <br />one to a few isolated peaks present; g) strongly aged gasoline or diesel range compounds are significant; h) lighter than water immiscible <br />sheen is present; i) liquid sample that contains greater than —5 vol. % sediment; j) no recognizable pattern. <br />n <br />DHS Certification No. 1644 i i Edward Hamilton, Lab Director <br />