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OnPRECISIOO 0 ' <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANALYSIJ <br /> Tuesday,July 12, 2005 <br /> Attention: Doug Heard ' <br /> Kleinfelder, Inc. <br /> 2825 Myrtle St. Report Page 98 of 103 <br /> Stockton, CA 95205 ' <br /> Volatile Organic Compounds by EPA Method 8260B- Quality Control <br /> Precision Enviro-Tech ' <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AG50802-Volatiles <br /> Blank(AG50802-BLKI) Prepared&Analyzed:08-Jul-05 <br /> 1,2-Dibromoethane(EDB) ND 2.00 ug/kg <br /> Dibromomethane ND 2.00 " <br /> 1,2-Dichlorobenzene ND 2.00 " <br /> 1,3-Dichlorobenzene ND 2.00 <br /> 1,4-Dichlorobenzene ND 2.00 " <br /> Dichlorodifluoromethane ND 2.00 " <br /> 1,1-Dichloroethane ND 2.00 " <br /> 1,2-Dichloroethane ND 2.00 <br /> 1,1-Dichloroethene ND 2.00 " <br /> cis-1,2-Dichloroethene ND 2.00 " <br /> trans-1,2-Dichloroethene ND 2.00 ' <br /> 1,2-Dichloropropane ND 2.00 " <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 2.00 " <br /> 2-Hexanone ND 50.0 " <br /> Isopropylbenzene 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 2.00 <br /> n-Propylbenzene 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 /> mg/L=milligrams per Liter=ppm DLR=Detection Limit for Purpose of Reporting. <br /> ug,E=micrograms per Liter=ppb Exceptional sample matrices or interferences may <br /> result in higher detection limits. <br /> RESPECTFULLY SUBMITTED, <br /> Jonathan Le,Laboratory Director <br /> 7743 N. West Lane . Suite B2 Stockton CA. 95210 phone: (209) 477-8105 Fax: (209) 477-8148 <br />