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110 2nd Avenue South #D7 Pacheco CA 94553-5560 <br /> Inc.McCampbell Analytical, ITelephone 925-798-1620 Fax 925 798-1622 <br /> AO I Website www mccampbell com E-mail marn(gmccampbell com <br /> Advanced GeoEnvironmental,Inc Client Project ID Flag Ctty Chevron Date Sampled 03/28/05 <br /> 837 Shaw Road <br /> Date Received 03/29/05 <br /> Client Contact Tim Cuellar Date Extracted 03131105-04102105 <br /> Stockton,CA 95215 <br /> Client P O Date Analyzed 03131105-04102105 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasohne* <br /> Extraction method SW5030B Analytical methods SW8015Cm Work Order 0503501 <br /> Lab ID Client ID Matrix TPH(g) DF %SS <br /> 033A CSA#2 W ND 1 97 <br /> Reporting Limit for DF=1, W 50 µWL <br /> ND means not detected at or <br /> above the reporting limit S NA NA <br /> *water and vapor samples and all TCLP&SPLP extracts are reported in ug/L,soil/sludge/solid samples in mg/kg, wipe samples inµg/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 gasohne9),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 gasolme9,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,3)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 pattem,n)TPH(g)range non-target isolated peaks subtracted out of the TPH(g)concentration at <br /> the client's request <br /> DHS Certification No 1644 Angela Rydelius,Lab Manager <br />