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110 Second Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC. Telephone.925-798-1620 Fax :925-798-1622 <br /> hto://www.mccamphell.com E-mail:main@mccampbell.com <br /> Advanced GeoEnvironmental Client Project ID:Geweke Date Sampled: 09/10/98 <br /> 4005 North Wilson Way Date Received: 09/11/98 <br /> Stockton,CA 95205 Client Contact:Kevin McKibben Date Extracted: 09/11-09/14198 <br /> [Client P.O: Date Analyzed: 09/11-09114198 <br /> Gasoline Range(C&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 Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 94788 MW48-10- W ND ND ND ND ND 0.73 90 <br /> 94789 MW /8-10 <br /> 99W ND ND ND 0.92 ND ND 103 <br /> 94790 MW98-10 W 3700,a ND 14 21 210 170 -- <br /> 94791 MW98- 10 W 4800,b ND<10 9.1 14 130 110 100 <br /> 94792 MW19189-10- W ND ND ND ND ND ND 86 <br /> 94793 MW 9289-10 W ND ND ND ND ND ND 87 <br /> 94794 MW149-10- <br /> 98W 1400,a ND 12 5.9 21 4.8 --- <br /> Reporting Limit unless W 50 ug/L. 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 SPLP extracts <br /> in ug/L <br /> to cluttered chromatogram;sample peak coelutes with surrogate peak <br /> `The following descriptions of the TPH chromatogram are cursory in nature and McCampbeil 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 Hamilton,Lab Director <br />