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j Alpha Scientific Corporation <br /> Environmental Laboratories <br /> 10-06-2006 <br /> Client: Biophysics Environmental Assessment Lab Job No.: BE609158 <br /> Project: Frontier Trucking/Tracy <br /> Project Site: 425 W Larch Rd, Tracy, CA Date Sampled: 09-28-2006 <br /> Matrix: Water Date Received: 09-29-2006 <br /> Batch No. : 1002-VOEWI Date Analyzed: 10-02-2006 <br /> EPA 8260B (BTEX & Oxygenates by GC/MS) <br /> Reporting Units: µg/L (ppb) <br /> Lab ID Method BE609158-6 BE609158-7 BE609158-8 BE609158-9 BE609158- 10 <br /> Blank MDL <br /> � Sample ID MW-6 MW-7 MW-8 MW-9 MW-10 <br /> DF 1 1 1 2 2.5 1 <br /> Benzene ND ND ND ND ND ND 1 <br /> Toluene ND NO ND ND NO ND I <br /> Ethylbenzene ND NO NO ND ND ND I <br /> Total Xylenes ND ND ND ND ND NO 2 <br /> 152-DCA ND ND ND NO NO ND 0.5 <br /> EDB ND ND NO NO ND ND 0.5 <br /> MTBE ND ND ND 23150* 480 ND 2 <br /> t 113 ND ND ND 5. 8 ND ND 2 <br /> DIPE ND NO ND ND ND ND 2 <br /> TAME ND ND ND 4.5 ND ND 2 <br /> TBA ND NO ND IND ND ND 10 <br /> MDL=Method Detection Limit, <br /> DF=Dilution Factor (DF x MDL = Reporting Limit for the sample), <br /> ND—Not Detected (at the specified limit).* Obtained from a higher dilution analysis. <br /> J=Trace concentratin, below reporting limit. <br /> 16760 Gridley Road, Cerritos, CA 90703 5 Phone: (562) 809-8880 Fax: (562) 809-8801 <br />