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' L 10 2nd Avenue South,#D7 Pacheco CA 94553-5560 <br /> McCarnrbell Analytical Inc Telephone 925-798-1620 Fax 925 798-1622 <br /> http I/www mccampbell corn E-mail main@mccampbell com <br /> Advanced GeoEnvironmental,Inc Client Project ID Geweke Date Sampled 09/16/02 <br /> • 837 Shaw Road Date Received 09/17/02 <br /> Client Contact Brian Millman Date Extracted 09/18/02-09/20/02 <br /> Stockton,CA 95215 <br /> Client P 0 Date Analyzed 09/18/02-09/20102 <br />' Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> Extraction method SW5030B Analytical methods SW8021B18015Cm Work Order 0209239 <br />' Lab ID Client ID Matrix TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> 001A MW7/091602 W ND --- ND ND ND ND 1 968 <br />' 002A MW8/091602 W 3000,a --- 3 2 76 65 210 5 113 <br /> 003A MW9/091602 W 4900,a -- 8 3 58 310 60 5 105 <br />' 004A MW121091602 W ND -- ND ND ND ND 1 995 <br /> 005A MW14/091602 W 410,a --- 77 3 3 3 7 52 1 ---# <br /> 1 <br /> ii <br /> 1 <br /> 1 <br /> i <br /> Reporting Limit for DF=1 W7 150 50 05 05 0 5 05 1 lig/L <br /> NO means not detected at or <br /> 1 above the reportmo limit S NA NA NA NA NA NA 1 mg/Kg <br /> *water and vapor samples are reported in ug/L,soil and sludge samples in mg/kg,wipe samples in ug/wipe,product/oil/non-aqueous liquid samples in <br /> mg/L,and TCLP extracts in ug/L <br /> #cluttered chromatogram,sample peak coclutes 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 stgntficant(aged gasoline"),c)lighter gasoline 1 range compounds(the most mobile fraction)are significant,d)gasoline range compounds having broad chromatographic peaks are significant,biologically <br /> altered gasolinel,e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent),f)one to a few isolated non-target peaks present, <br /> g)strongly aged gasoline or diesel range compounds are significant,h)lighter than water immiscible sheen/product is present,t)liquid sample that <br /> contains greater than--2 vol %sediment,j)reporting limit ratsed due to high MTBE content,k)TPH pattern that does not appear to be derived from <br /> gasoline(aviation gas) m)no recognizable pattern <br /> DHS Certification No 1644 <br /> 1 Edward Hamilton, Lab Director <br /> 1 <br />