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110 2nd Avenue South,#137,Pacheco CA 94553-5560 <br /> McCampbell Analytical Inc Telephone 925-798-1620 Fax 925-798-1622 <br /> h //www mccampbell com E mad mam mecampbell corn <br /> Advanced GeoEnvlronmental, Inc Client Project lD Chase/Van Buren Date Sampled 12/02/02 <br /> 837 Shaw Road Date Received 12/03/02 <br /> Stockton,CA 95215 Client Contact Paul Dotson Date Extracted 12/06/02-12/09102 <br /> Client P O Date Analyzed 12/06/02-12/09102 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> Extraction method SW5030B Analytical methods SW8021B/8015Cm Work Order 0212020 <br /> Lab ID Client ID Matrix TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> 001A MW 3 W 170,000,a ND<10,000 4600 51,000 4500 27,000 2000 102 <br /> 002A MW 6 W 120,a ND 1 5 ND ND ND 1 105 <br /> 003A MW 9 W 950,a ND 2 1 56 61 95 1 --# <br /> 004A MW 10 W ND ND ND ND ND ND l 105 <br /> 005A MW 22 W ND ND ND ND ND ND 1 100 <br /> Repartmg Lumt for Dfi=1 W 50 50 0 5 05 05 05 1 µg/L <br /> ND means not detected at or <br /> above the reporting limit S NA NA NA NA NA NA 1 mg/Kg <br /> •water and vapor samples are reported inµgll_,soil and sludge samples in mg/kg,wipe samples inµg/wipe,and TCLP extracts in pg/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 gasohnel),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 gasoline',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 /> 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,))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 <br /> DHS Certification No 1644 Edward Hamilton, Lab Director <br /> f <br />