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110 2nd Avenue South #D7 Pacheco CA 94553-5560 <br />' McCampbell Analytical, Inc. Telephone 925 798-1620 Fax 925-798 1622 <br /> Z4 Website www mccampbell corn E-mail roam@mccampbell com <br /> Advanced GeoEnvironmental, Inc Client Project ID 3B's Date Sampled 03/31/05 <br />' 837 Shaw Road Date Received 04/01/05 <br /> Client Contact Tim Cuellar Date Extracted 04/01/05 <br />' Stockton,CA 95215 <br /> Client P O Date Analyzed 04/01/05 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br />' Extraction method SW5030B Analytical methods SW8021B18015Cm Work Order 0504001 <br /> lab ID Client lD Matrix TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes <br />' 001A DW-1 W ND ND ND ND ND ND l 108 <br /> 1 <br /> 1 <br /> I <br /> �I <br /> Reporting Lind for DF=! W 50 50 0 5 0 5 0 5 0 5 1 gg/L <br /> ND means not detected at or 6 <br /> above the reportmg lmvt S NA NA NA NA NA NA 1 mg/Kg <br /> *water and vapor samples and all TCLP&SPLP extracts are reported in ug/L,soil/sludge/solid samples in mg/kg, wipe samples inµpiwlpe, <br /> product/oillnon-aqueoLis liquid samples in mglL <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)),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 gasolmc9,e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent/mineral spirit),f)one to a few isolated non-target <br /> I 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 /> derived from gasoline(aviation gas) m)no recognizable pattern,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 />