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l <br /> Inc. 10 2nd Avenue South,#D7,Pacheco,CA 9455315560 - -—-- <br /> McCampbell Analytical, nc. A 4WebsueTewwworneca9mpbel -1620 Fax orn E mail a25 798-a 22 corn <br /> Advanced GeoEnvironmental,Inc Client Project ID Flag City Chevron Date Sampled 05/13/04 <br /> 837 Shaw Road Date Received 05/14/04 <br /> Client Contact Tun Cuellar Date Extracted 05/18/04 <br /> Stockton,CA 95215 <br /> Client P O Date Analyzed 05/18/04 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasolene with BTEX and MTBE* <br /> Extraction method SW5030B Analytical methods SW8021B/8015Cm Work Order 0405225 <br /> Lab ID Client iD Matrix TP (g) MTBE Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> 001A Influent W ND -- ND ND ND ND 1 99 8 <br /> 002A Effluent W ND -- ND ND ND ND 1 102 <br /> I <br /> f <br /> Reporting Lurnt for DF=1 W 50 50 0 5 05 05 05 1 itg/L <br /> ND means not detected at or <br /> above the reporting hunt S NA NA NA NA NA NA I mg/Kg <br /> *water and vapor samples and all TCLP&SPLP extracts are reported to ug/L,soil/sludge/solid samples in mglkg, wipe samples in Ag/wipe, <br /> product/oil/non-aqueous liquid samples in mg/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 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 gasolinery,e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent/mineral 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--1 vol %sediment,j)reporting limit raised due to high MTBE content,k)TPH pattern that does not appear to be <br /> denved from gasoline aviation gas) m no reco fable pattern <br /> DHS Certification No 1644 Bela Rydelius, Lab Manager <br />