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110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> mcCampbell Analytical Inc. Telephone:925-798-1620. Fax:925-798-1622 <br /> http:/Avww.mccarMbell.com E-mail:mainQmccampbellxuni <br />' Advanced GeoEnvironmental, Inc Client Project ID: Weldon Church Date Sampled: 05/29/02 <br /> • 837,Shaw Road Date Received: 05/30/02 <br /> Stockton,CA 95215 Client Contact: Paul Dotson Date Extracted: 06/01/02 <br /> Client P.O.: Date Analyzed: 06/01/02 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> Extraction method: SW5o30B Analytical methods: SW8021B/8015Cm WorkOrder.0205429 <br /> Lab ID Client ID Matrix TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes iDF %S5 <br /> 001A MWi/052902 W 3000,a NDC50 960 170 32 220 10 108 <br /> 002A MW2/052902 W ND ND ND ND ND ND I ill <br /> 003A MW3/052902 W ND ND ND ND ND ND 1 109 <br /> I004A MW4/052902 W 1600,a ND 31 6.2 30 16 1 --# <br /> 005A MW5/052902 W ND ND ND ND ND ND 1 105 <br />' 006A MW6u/052902 W ND ND ND ND ND ND 1 101 <br /> 007A MW6c/052902 W ND ND ND ND ND ND 1 102 <br />' 008A. MW7/052902 W ND ND ND ND ND ND 1 103 <br /> I <br /> I <br /> Reporting Limit for DF=1; W 50 5.0 0.5 0.5 0.5 0.5 ug/L <br />' ND means not detected at or <br /> above the reporting limit S 1.0 0.05 0.005 0.005 0.005 0.005 1ng/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 gasoline?;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;k)TPH pattern that does not appear to be derived from gasoline(aviation gas). <br /> • DHS Certification No. 1644 Edward Hamilton,Lab Director <br />