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1 110 2nd Avenue South,#D7 Pacheco,CA 94553-5560 <br /> McCampbell Analytical Inc Telephone 925-798 1620 Fax 925-798-1622 <br /> httpJlwww mccampbell com E-mail maln@mccamphell cam <br /> Advanced GeoEnvironmental,Inc Client Project ID MPB-Mossdale Date Sampled 06/27/02 <br /> 837 Shaw Road Date Received 06/28/02 <br /> Client Contact Bill Little Date Extracted 06129/02-07101/02 <br /> Stockton, CA 95215 <br /> CIient P O Date Analyzed 06/29/02-07/01/02 <br /> IGasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> �xtraction method SW503013 Analytical methods SW8021 W8015Cin Work Order 0206465 <br /> Lab ID Client ID Matrix TPH(g) MTBE Benzene Toluene F-thylbenzene Xylenes DF %S5 <br /> 001A MW-1062702 W ND 13 ND ND ND ND 1 994 <br /> 002A MW2 062702 W 1500,a 24 68 5 0 34 6 5 1 —tt <br /> 003A MW3 062702 W 350,b,m 470 ND 3 0 ND ND 1 - # <br /> 004A MW4 062702 W ND ND ND ND ND ND 1 104 <br /> 005A MW5 062702 W ND ND ND ND ND ND 1 104 <br /> I <br /> i <br /> Reporting Limit for DF=1, W 50 50 05 05 05 05 ug/L <br /> ND means not detected at or <br /> above the reporting Lmet S 10 005 0 005 0 005 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 /> #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 gasoline9),c)lighter gasoline range <br /> I compounds(the most mobile fraction)are significant,d)gasoline range compounds having broad chromatographic peaks are significant,biologically <br /> altered gasolmeh,e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent),0 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)sample diluted due to high MTBE content,k)TPH pattern that does not appear to be derived from <br /> Igasoline(aviation gas) m)no recognizable pattern <br />.0I <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />