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' 110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> btW://www.mccuapMl.co E-mail main[,?a mccampbell com <br /> Advanced GeoEnvironmental Client Protect ID DSS- Stockton Date Sampled 07/23/99 <br /> 4005 North Wilson Way Date Received 07/27/99 <br /> Stockton,CA 95205 Client Contact Kevin McKibben Date Extracted 07/27/99 <br /> Client P O Date Analyzed 07127-07129199 <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(gy MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 16068 P 1-40-45 S ND --- ND ND ND ND 104 <br /> 16069 P1/7-23-99 W ND,i --- ND ND ND ND 104 <br /> 16070 P2-5 S --- --- ND ND ND ND 95 <br /> 16071 P3-10 S --- --- ND ND ND ND 104 <br /> Reporting Limit unless W 50 ug/L 50 05 05 05 05 <br /> otherwise stated,ND <br /> means not detected above <br /> the reporting limit S 1 0 mg/kg 005 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 /> 'T'he 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 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 large compounds are significant,h)fighter than wafer imrrnscible <br /> sheen is present,i)hs}md sample that contains greater than�5 vol %sedimen4))no rewgnizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />