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7 - - - - -- - - -- - --- <br /> " 110 2nd Avenue South ##D7,Pacheco,CA 94553-5560 <br /> Inc.McCampbell Analytical, Telephone 925 798-1620 Fax 925 798-1622 <br /> Website www mccampbell com E-nail niain(n mecanipbell com <br /> Advanced GeoEnvironmental, Inc Client Project ID FIag City Chevron Date Sampled 01/20104-01/22/04 <br /> 837 Shaw Road Date Received 01/23/04 <br /> Client Contact Tern Cuellar Date Extracted 01/23/04-01127104 <br /> Stockton,CA 95215 <br /> Client P O Date Analyzed 01123104-01/27/04 <br /> Gasoline Range(C6-C12) Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> Extraction method. SW503013 Analytical methods SW802113/8o15Cm Work Order 0401260 <br /> Lab ID Client ID Matrix TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes DF /.SS SS <br /> 017A P41-15' S ND -- ND ND ND ND 1 960 <br /> 018A P41-30' S ND --- ND ND ND ND 1 844 <br /> 019A P41-45' S ND -- ND ND ND ND 1 865 <br /> 020A P42-10' S ND — ND ND ND ND 1 996 <br /> 021A I P42-15' S ND -- ND ND ND ND 1 960 <br /> 022A P42-25S ND -- ND ND ND ND 1 897 <br /> 023A P42-50' S ND -- ND ND ND ND 1 117 <br /> 024A P43-15' S ND -- ND ND ND ND 1 914 <br /> 025A P43-30' S ND ND ND ND ND 1 908 <br /> 026A P43-45' S ND -- ND ND ND ND 1 918 <br /> I <br /> i <br /> Reporting Limit for DF=1 W i 50 50 05 05 05 05 1 pg/L <br /> ND means not detected at or <br /> above the reporting limit S 10 <br /> 005 0 005 0 005 0 005 0 005 1 mg/Kg <br /> *water and vapor samples and all TCLP&SPLP extracts are reported inµg11..,soillsludge/solid samples in mg/kg wipe samples inµg/wipe <br /> productloil/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 gasolme9,e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent/mineral spiriCy),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--2 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 as) m no recognizable attern / <br /> DHS Certification No 1644 �llL�, Angela Rydelius, Lab Manager <br />