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1 l0 2nd Avenue South,#I37 Pacheco,CA 94553-5560 <br /> McCampbell Analytical Inc Telephone 925-798-1620 Fax 925-798-1622 <br />' h Jlwww mcc bell com E-mail maw mcc hell cam <br /> Advanced GeoEnvironmental,Inc Client Project ID Flag City Chevron Date Sampled 04/21/03 <br />' 837 Shaw Road Date Received 04/22/03 <br /> Client Contact Tun Cuellar Date Extracted 04/22/03-04/23/03 <br /> Stockton,CA 95215 <br />' Client P Q Date Analyzed 04/22/03-04/23/03 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> Extraction method SW5030B Analyncal methods SW8021B18015Cm Work Order 0304328 <br />' Lab ID CIient ID Matrix TPH(g) MTBE Benzene Toluene Ethylben=e Xylenes DF %SS <br /> 001A Influent W ND 52 ND ND ND ND 1 102 <br />' 002A Effluent W ND ND ND ND ND ND 1 102 <br /> I <br /> i <br /> I <br /> I � <br /> 3 <br /> I <br /> I <br /> Repomng Lunt for DF=1 W 50 so 05 05 05 05 1 µg/L <br /> I ND means not detected at or <br /> above the reporting hmrt i S NA NA NA NA NA i NA 1 rng/Kg <br /> *water and vapor samples arc repotted m pg/L,soil and sludge samples in mg/kg,wipe samples to pg/wipe,and TCLP extracts inµg/L <br /> I #cluttered chromatogram,sample peak coelutes with surrogate peak <br /> +The following descriptions of the TPH chromatogram are cursory to 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 significant(aged gasoline?),c)lighter gasoline range <br /> I compounds(the most mobile fraction)are significant,d)gasoline range compounds having broad chromatographic peaks are significant,biologically <br /> altered gasolme9,e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent/mineral spent?),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,t)liquid <br /> sample that contains greater than—2 vol %sediment,j)reporting limit raised due to high MTBE content,k)TPH pattern that does not appear to be <br /> Iderived from gasoline(aviation gas) m)no recognizable pattern <br /> • DHS Certification No 1644 Angela RydeIius,Lab Manager <br />