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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 /> Ihttn//www mccampbell com E-mail mam@mccampbell com <br /> Advanced GeoEnvtranmental Client Project ID Flag City Chevron <br /> Date Sampled 03/14/01 <br /> 837 Shaw Road Date Received 03/20/01 <br />' Stockton,CA 95215 Client Contact Tun Cuellar Date Extracted 03/23/01 <br /> rChent P 0 Date Analyzed 03/23/01 <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 1D Matrix TPH(g)+ Ethylben- %Recovery <br /> MTBE Benzene Toluene Zene Xylenes g <br /> Surro ate <br /> 633$6 MW-10A W NO ND NO NO NO NO 99 <br /> 63387 MW_10B W ND NO NO ND ND ND 95 <br />' 63388 MW-10C W ND ND NO ND NO NO 105 <br />' 63389 MW-10D W NO NO NO ND ND ND 98 <br /> 63390 MW-10E W ND ND NO NO ND NO 97 <br /> 1 <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 10 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 sarrgiles 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 ars 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 signr6cant(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 gasohne',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 imrmscible <br /> sheen is present,i)liquid sample that contains greater than S vol %sedirrient,I)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br /> I <br />