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110 Second Avenue Sout ,#D7,Pacheco,CA 94553-5560 <br /> 124 McCAMPBELL ANALYTICAL INC. Telephone:925-798-1620 Fax:925-798-1622 <br /> hM,//www.mccamnhell.com E-mail:main@mccampbell.com <br /> • Date Sampled: 01/27/99 <br /> Advanced GeoEnvironmental Client Project ID:Tank#1-Soil Borings <br /> 4005 North Wilson Way Date Received: 01/28/99 <br /> Stockton,CA 95205 Client Contact:Bill Little Date Extracted:01/28/99 <br /> Client P.O: Date Analyzed:01/28/99 <br /> Gasoline Range(C6-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(gr MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 02477 PBI-5 S -- --- ND ND ND ND 99 <br /> 02478 PBI-20 S -- — ND ND ND ND 99 <br /> 02479 PB2-15 S --- --- ND ND ND ND 99 <br /> 02480 PB2-20 S --- --- ND ND ND ND 98 <br /> 02481 PB3-15 S -- --- ND ND ND ND 99 <br /> 02482 PB3-20 S --- --- ND ND ND ND 99 <br /> 02483 P134-5 S --- --- ND ND ND ND 99 <br /> • 02484 PB5-5 S -- --- ND ND ND ND 100 <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 S 1.0 mg/kg 0.05 0.005 0.005 0.005 0.005 <br /> the reporting limit <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 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(?);t) <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 //f Edward Hamilton,Lab Director <br />