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1 110 Second Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC. Telephone:925-798-1620 Fax:925-798-1622 <br />' h=•1E-mail:main@mccaTnpbell.com <br />' Advanced GeoEnvironmental Client Project ID: Strong Property Date Sampled: 01/20/99 <br /> 4005 North Wilson Way Date Received: 01/23/99 <br />' Stockton,CA 95205 Client Contact: Tim Cuellar Date Extracted: 01/27/99 <br /> Client P.O: Date Analyzed: 01/27/99 <br />' Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline*,with Methyl tert-Butyl Ether*&BTEX* <br /> FPA 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 Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 02301 MW-1 W ND ND ND ND ND ND 110 <br />' 02302 MW-2 W 2700,a Nl><10 340 2.8 130 190 103 <br /> 02303 MW-3 W ND ND 1.5 ND 1.3 2.3 106 <br />' 02304 MW-4 W ND ND ND ND ND ND 109 <br /> I <br /> IReporting Limit unless `ry7 50 ug/L 5.0 0.5 0.5 0.5 0.5 <br /> otherwise stated;ND <br /> means not detected above 5 1.0 mg/kg 0.05 0.005 0.005 0.005 0.005 <br /> the reporting limit g g <br /> water and vapor samples are reported in ug/1—wipe samples in ug/wipe,soil and sludge samples in mg/kg,and all TCLP and SPLP extracts <br /> in ug/L <br /> I $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(?);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.V. rd j)no recognizable pattern. <br /> DHS Certification No. 1644 // Edward Hamilton,Lab Director <br />