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110 Second Avenue South,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. Telephone : 510-798-1620 Fax : 510-798-1622 <br /> 44 http://wA,w.mccan�pbell.com E-mail: main @mccampbeH.com <br /> Advanced GeoEnvironmental Client Project ID: Geweke Date Sampled: 06/20/97 <br /> 1803 West March Lane, Ste A Date Received: 06/24/97 <br /> Stockton,CA 95207 Client Contact: Kevin McKibben Date Extracted: 06/24/97 <br /> Client P.O: Date Analyzed: 06124-06/25/97 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline*,Nvith Methyl tert-Butyl Ether* &BTEX* <br /> EPA methods 5030,modified 8015,and 8020 or 602;California RWQ-CB(SF Bay Region)method GCF1D(5030) <br /> Lab ID Client ID Matrix TPH(g)' MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 78001 P20-25 S 4900,bj --- 4.9 220 110 510 104 <br /> 78002 P20-35 S 3400,b.j 23 220 73 310 98 <br /> 78003 P20-45 S II00,b,j --- 1.1 12 7.7 110 97 <br /> 78004 P20-55 S 120,b,j --- 0.051 0.45 0.30 3.1 100 <br /> 78005 P21-25 S 540,b,j --- 1.0 18 11 57 100 <br /> 78006 P21-35 S 770,bi --- 4.4 40 14 70 103 <br /> 78007 P21-45 S 210,b,j 0.23 5.5 3.8 20 99 <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 m S 1.0 /k 0.05 0.005 0.005 0.005 0.005 <br /> mg/kg <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 coefutes 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; Ir)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 />