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I 10 Second Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC. Telephone:925-798-1620 Fax:925-798-1622 <br /> 24 http://www.mccampbell.com E-mail:main@mccampbell.com <br /> Advanced GeoEnvironmental Client Project ID: Volpi Date Sampled: 07/20/98 <br /> 4005 North Wilson Way Date Received: 07/22/98 <br /> Stockton, CA 95205 Client Contact: Bill Little Date Extracted: 07/22-07/23/98 <br /> [Client P.O: Date Analyzed: 07/22-07/24/98 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline*,with Alethyl tert-Butyl Ether*&BTEX* <br /> EPA methods 5030,modified 8015,and 8020 or 602;California RWQCB(SF Bay Region)method GCF1D(5030) <br /> Lab 1D Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 92535 T7 HBO W ND,i ND ND ND 0.51 5.7 105 <br /> 92536 TS H2O W ND,i ND ND ND ND ND 96 <br /> 92537 T9 H2O W ND,i ND 0.71 0.51 ND 1.3 98 <br /> 92538 T5-3 S 67,a ND<0.75 1.1 0.37 1.8 7.9 105 <br /> 92540 T6-3 S 8.7,j ND ND 0.025 0.007 0.060 111" <br /> 92542 T7-5 S ND ND ND 0.005 ND 0.023 108 <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 V <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 <br /> (stoddard solvent?),f)one to a few isolated peaks present,g)strongly aged gasoline or diesel range compounds are significant;h)lighter <br /> than water immiscible 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 />