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!10 2nd Avenue South #D7 Pacheco CA 94553 5560 <br /> EA4McCarnpbell Analytical Inc Telephone 925-798-1620 Fax 925 798-1622 <br /> http Ilwww mccampbell corn E-mail main@mccampbell corn <br /> IT Corporation Client Project ID #17334, Date Sampled 04/11/02 <br /> STHL/STOCKTON <br /> 4005 Port Chicago Hwy Date Received 04/15/02 <br /> Concord, CA 94553-2233 Client Contact Shelby Lathrop Date Extracted 04/17/02-04/19/02 <br />' <br /> L=tentP Date Analyzed 04/17102-04/19102 <br /> - i <br /> Gasoline Gasoline Range(C6-C12)Volatile Hydrocarbons as Gaswith BTEX and MTBE* <br /> Extraction method SW5030B Analytical methods SW8021B/8015Cm Work Order 0204252 <br />' Lab ID Client ID Matrix TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> 001A MW-3 W 120,1 ND ND 22 ND ND 1 111 <br /> 002A MW-2 W ND ND ND ND ND ND 1 118 <br /> 003A MW-4 W 400,1 1900 ND 83 057 057 1 118 <br /> 004A MW-5A W 42000,a 1500 2200 4500 1800 6200 100 ---# <br /> 005A MW-5B W ND ND ND ND ND ND 1 108 <br /> Reporting Limit for DF=1, W 50 5 05 05 05 05 ug/L <br />' ND means not detected at or <br /> above the reporting limit S I 005 0 005 000-5 0 005 0 005 mg/Kg <br /> *water and vapor samples are reported in ug/L,soil and sludge samples in mg/kg,wipe samples in ug/wipe,and TCLP extracts in ug/L <br /> DF=dilution factor <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 gasoline9,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,i)liquid sample that <br /> contains greater than--2 vol %sediment,))no recognizable pattern <br /> DHS Certification No 1644 4- idward <br /> Hamilton, Lab Director <br />