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M1�1 i1 <br /> I 10 Second Avenue South,#D7,Pacheco,CA 94553 <br /> MCCAMPBELL ANALYTICAL INC. Telephone : 510-798-1620 Fax : 510-798-1622 <br /> J4 h_ttp:/huww.niccanipbell.com E-mail:main@mccampbell.com <br /> Advanced GeoEnviror mental Client Project ID: Geweke Date Sampled: 09/16/97 <br /> 1803 West March Lane, Ste A Date Received: 09/17/97 <br /> Stockton, CA 95207 Client Contact: Kevin McKibben Date Extracted: 09117-09/19/97 <br /> Client P.O: I Date Analyzed: 09117-09119197 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline*,with Methyl tent-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 Benzcne Toluene Ethylben Xylenes %Recovery <br /> on <br /> -ze Surrogate <br /> 80832 MW-6/9-16-97 W ND ND ND ND ND ND 104 <br /> 80833 MW-719-16-97 W ND ND ND ND 1.2 0.65 103 <br /> 80834 MW-8/9-16-97 W 910,a ND 6.5 0.91 49 49 112" <br /> 80835 MW-9/9-16-97 W 8600,a ND 55 3.7 550 430 110 <br /> 80836 MW-1119-16-97 W 80,b ND ND ND ND ND 105 <br /> 80837 MW-12/9-16-97 W ND ND ND ND ND N''D 95 <br /> 80838 MW-14/9-16-97 W 3600,a 12' 260 I80 80 440 106 <br /> &This MTBE result did not confirm by EPA method 8260 <br /> Reporting Limit unless W 50 ug/L 5.0 0.5 0.5 0.5 0.5 <br /> otherwise stated;ND means <br /> not detected above the S 1.0 <br /> reporting limit 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 /> F 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 pattens 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 //T Edward Hamilton,Lab Director <br />