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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 /> h //www mccam bell com E-mail main@mccampbell cam <br />' Date Sampled 05/03/01 <br /> Advanced GeoEnvironmental Client Project ID Flag City Chevron <br /> 837 Shaw Road Date Received 05/04/01 <br /> Stockton, CA 95215 Client Contact Tim Cuellar Date Extracted 05/04/01 <br /> Client P D Date Analyzed 05/04/01 <br /> Gasoline Range(C&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 />' 66745 INFLUENT W ND 130 ND ND ND ND 98 <br /> 66746 GAC-1 W ND ND ND ND ND ND 96 <br />' 66747 GAC-2 W ND ND ND ND ND ND 95 <br /> 66748 SS-1 W ND ND ND ND ND ND 106 <br />' 66749 EFFLUENT W ND ND ND ND ND ND 106 <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 1 0 mg/kg 005 0 005 0 005 0 005 0 005 <br /> water and vapor samples are reported in ug/1,wipe samples in ug/wipe,soil and sludge samples in mg/kg,and all TCLP and SPLF extracts <br />' in ug/L <br /> N 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 gasoline?,e)TPH pattern that does not appear to be derived from gasoline(7),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,l)no recognizable pattern <br />' DHS Certification No 1644 Edward Hamilton,Lab Director <br />