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HO Second Avenue South,#D7,Pacheco,CA 94553-5560 <br />' McCAMPBELL ANALYTICAL INC. Telephone: 925-798-1620 Fax:925-798-1622 <br /> bUp;//www,rnQcwnpJdLr&mE-mail:main@mccampbell.com <br />' Advanced GeoEnvironmental Client Project ID: Strong Property Date Sampled: 07/09-07130/98 <br /> 4005 North Wilson Way Date Received: 07/11/98 <br /> Stockton,CA 95205 Client Contact:Tim Cuellar Date Extracted: 07114-07120198 <br />' Client P.O: Date Analyzed: 07/15-07/20/98 <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(g)+ MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 91979 B4-10 S 580,b,d ND<1 ND<0.05 1.2 22 32 97 <br />' 91980 134-15 S 7.7,b,d ND 0.010 0.020 0.17 0.14 100 <br />' 91981 B4-20 S ND ND ND ND ND ND 103 <br /> 91984 B5-10 S 1.6,b ND ND ND ND ND 94 <br />' 91985 B5-15 S ND ND ND ND ND ND 93 <br /> 91988 B6-10 S 200,b,d ND<0.1 0.075 0.18 4.0 7.1 95 <br /> 10 91989 86-15 S 17,b ND ND 0.049 0.20 0.062 103 <br /> 91990 B6-20 S ND ND ND 0.009 ND ND 97 <br /> 1 <br />' Reporting Limit unless W 50 u 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 <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(?);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 /> Isheen 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 />