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I <br /> 110 2nd Avenue South,#D7 Pacheco CA 945 53-5 560 <br /> McCampbell Analytical Tnc Telephone 925-798-1620 Fax 925-798-1622 <br />' h l/www mica bell com E-mail inainQrriccarripbellcom <br /> Advanced GeoEnvtronmental,Inc Client Project ID Flag City Chevron Date Sampled 12/06/02 <br />' 837 Shaw Road Date Received 12/06/02 <br /> Client Contact Tim Cuellar Date Extracted 12/11/02-12/13/02 <br /> Stockton, CA 95215 <br />' Client P O Date Analyzed 12/11102-12/13/02 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> k Extraction method SW5030B Analytical methods SW8021B/8015Cm Work Peder 0212123 <br />' Lab ID Chent E] Matrix TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes DF %8S <br /> 017A MW-15 W ND ND ND ND ND l 104 <br />' 018A MW-16 W ND,i r ND ND ND ND 1 107 <br /> 019A MW-17 W ND ND ND ND ND 1 101 <br />' 020A MW-18 W ND ND ND ND ND 1 106 <br /> I <br /> I <br /> I <br /> Reporting Lirml for DF=l, W 50 50 05 05 05 05 1 pg/L <br /> I ND means not detected at or <br /> above the reporting lmnt S NA NA NA NA NA NA 1 tng/Kg <br /> *water and vapor samples are reported inµg/L,soil and sludge samples in mg/kg wipe samples inµg/wipe,and TCLP extracts inµg/L <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 interpretation a) <br /> unmodified or weakly modified gasoline is significant,b)heavier gasoline range compounds are sigmficant(aged gasoline'7),c)lighter gasoline range <br /> compounds(tile most mobile fraction)are significant,d)gasoline range compounds having broad chromatographic peaks are significant,biologically <br /> altered gasoline?,e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent/mineral spiriV),f)one to a few isolated non-target <br /> peaks present,g)strongly aged gasoline or diesel range compounds are significant,h)lighter than water immiscible sheen/product is present i)liquid <br /> sample that contains greater than---2 vol %sediment })reporting limit raised due to high MTBE content,k)TPH pattern that does not appear to be <br /> derived from gasoline(aviation gas) m)no recognizable pattern <br /> • DHS Certification No 1644 Edward Hamilton, Lab Director <br /> I <br />