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r I <br /> PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANAL YSIS_ <br /> Tuesday,March 13, 2007 <br /> Attention: Guy W.Roy <br /> R&L Diesel Report Page 19 of 23 <br /> P.O.Box 2498 <br /> Danville, CA 94526 <br /> Volatile Organic Compounds by EPA Met iod 8260B- Quality Control <br /> Precision Enviro- ech <br /> Reporting Sp kc Source %RFC RPD <br /> Analyte Result Limit Units Le vel Result %REC Limits RPD Limit Notes <br /> Batch AB72708-Volatiles <br /> Blank(AB72708-BLK1) Prepared&Analyzed:27-Feb-07 _ <br /> 1,2-Dichloropropane ND 2.00 ug/kg <br /> 1,3-Dichloropropane - ND 2.00 " <br /> 2,2-Dichloropropane ND 2.00 " <br /> 1,1-Dichloropropene ND 2.00 " <br /> cis-1,3-Dichloropropene ND 2.00 " <br /> trans-1,3-Dichloropropene ND 2.00 " <br /> Ethylbenzene ND 2.00 " <br /> Freon 113 ND 2.00 " <br /> Hexachlorobutadiene ND 200 " <br /> 2-Hexanone ND 50.0 " <br /> lsopropylbenzene ND 2.00 " <br /> p-Isopropyltoluene ND 2.00 " <br /> Methylene chloride ND 2.00 " <br /> 4-Methyl-2-pentanone ND 20.0 <br /> Naphthalene ND 200 " <br /> n-Propylhenzene ND 2.00 " <br /> Styrene ND 2.00 " <br /> 1,1,2,2-Tetrachloroethane ND 2.00 " <br /> 1,1,1,2-Tetrachloroethane ND 2.00 " <br /> Tetrachloroethene ND 2.00 " <br /> Toluene ND 2.00 " <br /> 1,2,3-Trichlorobenzene ND 2.00 " <br /> 1,2,4-Trichlorobenzene ND 2.00 <br /> 1,12-Trichloroethane ND 2.00 <br /> I <br /> 1,1,1=rrichloroethane ND 2.00 " <br /> Trichloroethene ND 2.00 " <br /> Trichlorofluoromethane ND 2.00 " <br /> 1,2,3=frichloropropane ND 2.00 " <br /> 1,3,5-Trimethylbenzene ND 2.00 " <br /> 1,2,4-Trimethylbenzene ND 2.00 " <br /> Vinyl acetate ND 20.0 " <br /> Vinyl chloride ND 2.00 " <br /> Methyl tert-butyl Ether(MtBE) ND 2.00 " <br /> mg'L=milligrams per Liter=ppm DLR=Defection Limit forPurpose of Reporting. <br /> ug'L=micrograms per Liter-ppb Exceptional sample matrices or interferences may <br /> result in higher detection limits. <br /> RESPECTFULLY SUBMITTED, <br /> (�j/'OLA� <br /> Jonathan Le,Laboratory Director <br /> 3935 N. Coronado Ave Stockton CA. 95204 vhone: (209) 47 -8105 Fax: (209) 477-8148 <br />