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1 <br /> 110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> 144 McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> kattn//www mccampellsGgM E-mail main@mccampbell com <br /> Advanced GeoEnvironmental Client Project ID ChaseN B Date Sampled 08/03/00 <br /> 4005 North Wilson Way Date Received 08/04/00 <br /> IStockton, CA 95205 Client Contact Bob Marty Date Extracted 08/04/00 <br /> IClient P O Date Analyzed 08/04/00 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasohne*,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 /> I Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Bthylben- Xylenes %Recovery <br /> zene Surrogate <br /> 44456 Inlet Air ND --- ND ND ND 081 100 <br />' 44457 Exhaust Air ND --- ND ND ND 070 96 <br /> I <br /> lie <br /> , <br /> I <br /> Reporting Limit unless Air 50 ug/L 50 05 05 05 05 <br /> otherwise stated,ND <br /> means not detected above <br /> the reporring limit S 1 0 mg/kg 005 0 005 0 005 0 005 0 005 <br /> 'air and vapor samples are reported in ug/L,wipe samples in ug/wipe,sod and sludge samples in mg/kg,and all TCLP and SPLP extracts in <br /> ug/L <br />' a cluttered chromatogram,sample peak coelutes with surrogate peak <br /> -Che 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 /> gasohne9), c) lighter gasoline range compounds (the most mobile fraction) are significant, d) gasoline range compounds having broad <br /> chromatographic peaks are significant,biologically altered gasoline9,e)TPH pattern that does not appear to be derived from gasoline(9),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 %sediment,j)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />