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t tp <br /> 1102nd Avenue South #D7 Pacheco CA 94553-5560 <br /> Inc.McCampbell Analytical, Telephone 925-798 1620 Fax 925 798 1622 <br /> 24 1 Website www mccampbell cum F-mail mamQmccampbell coin <br /> Advanced GeoEnvironmental, Inc Client Project ID Flag City Chevron Date Sampled 03/28/05 <br /> 837 Shaw Road Date Received 03/29/05 <br /> Client Contact Tim Cuellar Date Extracted 03131/05-04102/05 <br /> Stockton,CA 95215 <br /> Client P 0 Date Analyzed 03/31/05-04102105 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline* <br /> Extraction method 5W5030B Analytical methods SW8015Cm Work Order 0503501 <br /> Lab 0 Client 1D Matrix TPH(g) DF —'/.SS <br /> 001A MW-1 W ND i 108 <br /> 002A MW-2 W ND 1 115 <br /> 003A MW-4 W ND l j 107 <br /> 004A MW-5 W ND 1 103 <br /> 005A MW-6A W ND 1 109 <br /> 006A MW-68 W ND � 101 <br /> 007A MW-7 W ND 1 102 <br /> 008A MW-8A W ND 1 100 <br /> 009A MW-813 W ND 1 100 <br /> OlOA MW-8C W ND 1 102 <br /> 011A MW-9A I W ND 1 98 <br /> 012A MW-9B W ND 1 99 <br /> 013A MW-9C W ND 1 103 <br /> 014A MW-10A W ND 1 98 <br /> 015A MW-1013 W ND 1 97 <br /> 016A MW-10C , W ND 1 99 <br /> Reporting Limit for DF–1, I W 50 Rg/L <br /> ND means not detected at or I S NA NA <br /> above the reporting limit <br /> *water and vapor samples and all TCLP&SPLP extracts are reported in ug/L,soil/sludge/solid samples to mg/kg, wipe samples inµg/wipe, <br /> product/oil/non-aqueous liquid samples in mglL. <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 gasohne9,e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent I mineral spirit?),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 /> 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 reAuest <br /> Angela Rydelius, Lab Manager <br /> DHS Certification No 1644 <br />