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12nd Avenue South,f/D7 Pacheco CA 94553-5560 <br /> McCampbell Analytical Inc �10 <br /> phone 925-798-162D Fax 925-796-1622 <br />' n mcc bell cpm E mad main ll coin <br /> . Advanced GeoEnvironmental,Inc Client Project ID Flag City Chevron Date Sampled 05/14/03 <br /> 837 Shaw Road Date Received 05/15/03 <br /> i <br /> Client Contact Tim Cuellar Date Extracted 05/16103-05/22103 <br /> Stockton,CA 95215 <br />' Client P Q Date Analyzed 05/16103-05/22/03 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> Extraction method SW5030B Analytical methods SW8021B/8015Cm Work Order 0305230 <br />' Lab ID Client ID Matnx TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> OOIA Influent W ND 40 ND ND ND ND I 100 <br />' 002A Effluent W ND ND ND ND ND ND 1 993 <br /> I � <br /> I <br /> i <br /> Reporung Litint for DF=1, W 50 50 05 05 05 0 5 1 I gg/L <br />' ND means not detected at or <br /> above the reportmg lmvt S NA NA NA NA NA NA 1 mglKg <br /> *water and vapor samples are reported in Iig/L,soil and sludge samples in mg/kg,wipe samples in pg/wipe,and TCLP extracts in lig/L <br />' #cluttered chromatogram,sample peak coelutes with surrogate peak <br /> +The following descriptions of the TPH chromatograrn 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 gasoline?),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 gasoline?,e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent/mmeral spint9),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,j)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 Angela Rydehus,Lab Manager <br /> 1 <br />