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McCAMPBELL ANALYTICAL INC. 110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> Tele:510-798-1620 Fax 510.798-1622 <br />,r <br /> Geological Audit Services Client Project ID:Arco Mini Mart Date Sampled:04/08/94 <br /> w. 1803 West March Lane.Ste.A Date Received:04/08/94 <br /> Stockton,CA 95207 Client Contact:Bob Marty Date Extracted:04/09/94 <br />.L. <br /> Client P.O: Date Am zed:04/09-04/10/94 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline',with BTEX* <br /> r.r EPA methods 5030 modified 8015 and 8040 or 602 California RW CB SF Ba Re 'on method GCFID 5030 <br /> Lab ID Client ID Matrix TPH(g)+ Benzene Toluene Ethylben- Xylenes %Rec. <br /> zene Surrogate <br /> 35067 E12 S --- 0.008 ND ND 0.018 106 <br /> 35068 Comp SP-1to4 S 37,b ND 0.011 0.008 0.062 94 <br />.r <br /> s <br /> r <br /> Detection Limit unless other- W 50 ug/L 0.5 0.5 0.5 0.5 <br /> wise stated;ND means Not <br /> Detected S 1.0 mg/kg 0.005 0.005 0.005 0.005 <br /> "water samples are reported in ug/L,soil samples in mg/kg,and all TCLP extracts in mg/L <br /> y. #cluttered chromatogram;sample peak co-elutes with surrogate peak <br /> +The following descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not <br /> responsible for their interpretation:a))unmodified or weakly modified gasoline is siccant;b)heavier gasoline <br /> range compounds are signifieant(aged gasoline?);c)li ter gasoline range compounds(the most mobile fetion) <br /> are significant-d)ggaasoline range compounds are siVicant;no recognizable pattern, e)TPH pattern that does <br /> not appear to be derived from gasoline((?},fl one o a few isolated peaks present;gj strongly aged gasoline or <br /> diesel range compounds are significant;h)(igtter than water immiscible phase is present. <br /> DHS Ccrtification No. I644 Edward Hamilton,Lab Director <br />