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110 2nd Avenue South,#D7 Pacheco,CA 94553 5560 <br /> McCampbell Analytical Inc Telephone 925-798-7620 Fax 925-796-1622 <br /> FAW' http,//www mr-canipbell com E-mail main pri nil corn <br /> Advanced GeoEnvironmental,Inc Client Project ID Flag City Chevron Date Sampled 11/21/02 <br />' 837 Shaw Road Date Received 11/22/02 <br /> Brockton, CA 95215 Client Contact Tim Cuellar Date Extracted 11/22/02 <br />' Client P ODate Analyzed 11/25/02 <br /> Gasoline Range (C6-C12) Volatile Hydrocarbons as Gasoline* <br /> tr4cnon method SW5030B Analyucal methods SW8021 B/801 SCin Werk Order 0211392 <br />' Lab 10 Client ID Matrix TPH(g) DF %SS <br /> 0211392-0OIA Influent W ND 1 100 <br />' 0211392-002A Effluent W ND 1 101 <br /> I <br /> Reporting Limit for DF=1, W 50 4g/L <br /> ND means not detected at or <br /> above the reporting limit NA NA <br /> *water and vapor samples are reported in gg/L,soil and sludge samples in mg/kg,wipe samples in pg/wipe,and TCLP extracts inµg/L <br /> #cluttered chromatogram,sample peak coclutes 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 significant(aged gasoline9),c)lighter gasoline range <br /> compounds(the most mobile fraction)are significant,d)gasoline range compounds having broad chromatographic peaks are significant,biologically <br /> altered gasoltrie9,e)TPH pattern that does not appear to be denved from gasoline(stoddard solvent/mineral spirt),0 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 /> denved from asohne aviatwn as m no recognizable pattern <br /> . DHS Certification No 1644 Edward Harmlton,Lab Director <br /> f <br />