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110 2nd Avenue South,#137,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925.798-1620 Fax 925-798-1622 <br /> 24 http//www mccampbell cam E-mail main@mccampbell com <br />' Advanced GeoEnvtronmentai Client Project ID Flag Ci tyChevron Date Sampled 06/04/01 <br /> 837 Shaw Road Date Received 06/05/01 <br /> Stockton, CA 95215 Client Contact Ttm Cuellar Date Extracted 06/06/01 <br /> Client P O Date Analyzed 06/06/01 <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,Califamia RWQC13(SF Bay Region)method GCFID(5030) <br /> Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene bene Xylenes %Recovery <br /> eer <br />' 69040 INFLUENT W ND 45 ND ND ND ND 101 <br /> 69041 EFFLUENT W ND ND ND ND ND ND 98 <br /> I <br /> t <br /> I <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 samples to mg/kg,and all TCLP and SPLP extracts <br />' an ug/L <br /> 9 cluttered chromatogram,sample peak coelutes with surrogate peak <br />' `The 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 gasolrnev,e)TPH pattern that does not appear to be derived from gasoline(v),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,I)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />