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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 /> http//www mccarripbell com E-mail main@mccampbell com <br /> Advanced GeoEnvtronmental Client Project ID Flag City Chevron Date Sampled 01/03/02 <br /> 837 Shaw Road Date Received 01/04/02 <br /> Stockton, CA 95215 Client Contact Tun Cuellar Date Extracted 01/04/02 <br /> Client P O Date Analyzed 01/04/02 <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(g)+ MTBE Benzene Toluene Ethyl- Xylenes %Recovery <br /> benzene Surrogate <br /> 87789 Influent W ND 30 ND ND ND ND 112 <br /> 87790 Effluent W ND ND ND ND I ND ND 101 <br /> Reporting Limit unless W 50 ug/L 5 0 05 0 5 0 5 0 5 <br /> otherwise stated,ND <br /> means not detected above S 10 mg/kg 0 05 0 005 0 005 0 005 0 005 <br /> the reporting limit <br /> *water and vapor samples are reported in ug/L.,wipe samples to ug/wipe,soil and sludge samples in mg/kg,and all TCLP and SPLP extracts <br /> in uglL <br /> "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 mange compounds having broad <br /> chromatographic peaks are significant,biologically altered gasohne9,c)TPH pattern that does not appear to be derived from gasoline(?),f) <br /> . one to a Sew 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 Hanulton,Lab Director <br />