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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 />' http///wwv mccampbell com E-mail main@rnccampbell com <br />' Advanced GeoEnvironmental Client Project ID Arco Mint Mart Date Sampled 04/24/01 <br /> 837 Shaw Road Date Received 04/25/01 <br />' Stockton, CA 95215 Client Contact Bill Little Date Extracted 04/25-04127101 <br /> I Client P Q Date Analyzed 04/25-04/27/01 <br /> Gasoline Range (C6-C12) Volatile Hydrocarbons as Gasoline*,with Methyl tert-Butyl Etr* &BTEX* <br /> EPA methods 5030,modified 8015 and 8020 or 602 California RWQCB(SF Bay Region)method GCF1D(5030) <br />' Lab ID Client 10 Matrix TPH(g)+ MTBE Benzene Toluene Ethyl- Xylenes %Recovery <br /> benzene Surrogate <br /> MWW12A <br /> 66131 W ND 230 ND ND ND ND 101 <br /> 12 <br />' 66132 042401 W ND 190 ND ND ND ND 100 <br /> MW 12B <br /> r <br /> r <br /> lie <br /> r <br /> r <br /> r <br /> Reporting Litrut unless W 50 ug/L 50 0 5 0 5 0 5 05 <br /> otherwise stated,ND <br /> means not detected above <br /> the reporting limit mg/kg S 1 0 m /k 005 0 005 0 005 000 5 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 dewnpiions of the TPH chromatogram are cursory in nature and McCampbell Analvtical is not resnonsihie 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 signifc.ant,biologically altered gasoline',e)TPH pattern that does not appear to be derived from gasoline(v),0 <br /> one to a few isolated peaks present,g)strongly aged gasoline or diesel range compounds are significant, h) lighter than water imrmscibte <br /> sheen is present,i)liquid sample that contains greater than—5 vol %sediment,a)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton, Lab Director <br />