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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 /> littp://www.niccampbell.com E-mail:main@mccampbell.com <br /> r <br /> Advanced GeoEnvironmental Client Project ID:Fire Station#3 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: 07/23-07/27/98 <br /> Client P.O: Date Analyzed: 07/23-07/27/98 <br /> Gasoline Range(C6-02)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 GCF1D(5030) <br /> Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethen en- Xylenes %Recovery <br /> ze Surrogate <br /> 92522 MW1-20 S 800,b,j ND<2 ND<0.1 37 17 87 103 <br /> 92523 MW1-35 S ND 0.055 ND 0.016 ND 0.014 98 <br /> 92524 MW1-50 S 1.6,a. ND 0.24 0.011 ND 0.30 99 <br /> 92526 MW1-65 S ND ND ND ND ND ND 103 <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/k-,and all TCLP and SPLP extracts <br /> in ug/L <br /> a 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 aresignificant(aged <br /> gasoline?); c) lighter gasoline range compounds (the most mobile fi•action) 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 /> vy, sheen is present;i)liquid sample that contains greater than—5 vol.%sediment;j)no recognizable pattern. <br /> w <br /> DHS Certification No. 1644 1/)KI Edward Hamilton,Lab Director <br />