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1 <br /> 110 2nd Avenue South,#D7 Pacheco CA 94553 5560 <br /> McCampbell Analytical Inc Telephone 925-798.1620 Fax 925-798-1622 <br /> http/lwww m=nipbell corn E-mail mamQmccamphell corn <br /> • Advanced GeoEnvironmental Client Project ID MBP(Manteca) Date Sampled 04/11/02 <br /> 837 Shaw Road Date Received 04/12/02 <br /> Stockton, CA 95215 Client Contact Bill Little Date Extracted 04/16/02-04/24/02 <br /> ' Client P 0 Date Analyzed 04/16/02-04/24/02 <br /> Gasoline Range(C6 C12) Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> xtraction method SW5030B Analytical methods SW8021B/8015Cm Work Order 0204237 <br /> Lab ID Client ID Matrix TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> 001A MWl/041102 W N13<100 2900 ND<2 ND<l ND<l ND<1 2 103 <br /> ' 002A MW2/041102 W ND 86 ND ND ND ND 1 107 <br /> 003A MW3/041102 W ND ND ND ND ND ND 1 108 <br /> 004A MW4/041102 W ND ND ND ND ND ND 1 113 <br /> 005A MW5/041102 W ND ND ND ND ND ND 1 117 <br /> 006A MW6/041102 W ND ND ND ND ND ND 1 115 <br /> Reporting Limit for DF=1 W 50 5 05 05 0 5 05 ug/L <br /> above the reporting limit <br />' means not detected t or S 1 0 05 0 005 0 005 0 005 0 005 <br /> abmg/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 gasolme 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),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,j)no recognizable pattern <br /> DHS Certification No 1644 Edward Hannito Lab Director <br />