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110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC. Telephone: 925-798-1620 Fax:925-798-1622 <br /> ://www. E-mail:main@mccampbell.com <br /> I <br /> Advanced GeoEnvironmental Client Project ID: Van Buskirk Date Sampled: 08/05/99 <br /> 4005 North Wilson Way Date Received: 08/05/99 <br /> Stockton,CA 95205 Client Contact: Gary Dickenson Date Extracted: 08105-08106199 <br /> j Client P.O: Date Analyzed: 08/05-08106199 <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;Caiifomia RWQCB(SF Bay Region)method GCFID(5030) <br /> Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 16682 MW-1 W NO ND NO ND NO NO 101 <br /> 16683 MW-2 W NO ND ND NO NO NO 109 <br /> 16684 MW-3 W NO NO NO NO NO ND 103 <br /> 16685 MW-4 W NO 340 NO NO NO NO 105 <br /> 16886 MW-5 W ND NO ND NO NO NO 103 <br /> 1 <br /> I <br /> 1 Reporting Limit unless W 50 uglL 5.0 0.5 0.5 0.5 0.5 <br /> otherwise stated;ND <br /> means not detected above <br /> the reporting limit S 1.0 mg/kg 0.05 0.005 0.005 0.005 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 SDLP extracts <br /> in uglL <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 /> DHS Certification No. 1644 Edward La r <br /> �� d Hamilton, b Director <br />