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s a <br /> 110 2nd Avenue South #137 Pacheco CA 94553-5560 <br /> McCampbell Analytical IncTelephone 925-798-1620 Fax 925-798-1622 <br />' http llwww mccampbell cam E-mail main@mccampbell com <br /> Advanced GeoEnvlronmental, Inc Client Project ID Flag City Chevron Date Sampled 09/05/02 <br />' 837 Shaw Road Date Received 09/06/02 <br /> Stockton,CA 952I5 Client Contact Tim Cuellar Date Extracted 09/10/02-09/12/02 <br />' LO"ientO Date Analyzed 09/10/02-09/12/02 <br /> Gasoline Range(C&M)Volatile Hydrocarbons as Gasoline* <br />' Fxtraction method SW5030B Analytical methods 8015Cm Work Order 0209081 <br /> Lab ID Client ID Matrix TPH(g) DF %S8 <br /> 017A E9050 W ND 1 999 <br />' 018A EW6/090502 W ND 1 101 <br />' 019A EW7/090502 W ND 1 992 <br /> 020A EW8/090502 W ND 1 993 <br />' <br /> 021A EW 10/090502 W ND 1 100 <br /> 022A MWI3B/090502 W ND 1 103 <br />' 023A MW13C/090502 W ND 1 104 <br /> 024A MW13D/090502 W ND 1 984 <br />' 025A EFFLUENT W ND 1 999 <br /> 026A CSAI/090502 W ND 1 100 <br /> 027A CSA2/090502 W ND 1 994 <br /> 028A INFLUENT W ND l 100 <br /> Reporting Limit for DF=1, W 50 lig/L <br /> ND means not detected at or S NA NA <br /> above the reporting limit <br /> *water and vapor samples are reported in ug/L,soil and sludge samples in mg/kg,wipe samples in uglwipe,product/oil/non-aqueous liquid samples in <br /> mg/L,and TCLP extracts in ug/L <br /> #cluttered chromatogram,sample peak coelutes with surrogate peak <br /> I +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 gasoline'7),c)lighter gasoline range <br /> compounds(the most mobile fraction)are significant,d)gasulme 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),f)one to a few isolated non-target peaks present, <br /> g)strongly aged gasoline or diesel range compounds are significant,h)lighter than water immiscible sheen/product is present,i)liquid sample that <br /> contains greater than--2 vol %sediment,j)reporting limit raised due to high MTBE content,k)TPH pattern that does not appear to be derived from <br /> gasoline(aviation gas) m)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br /> I <br /> I <br />