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PRECISION <br /> ENVIRO-TECH <br /> Analytical Lahoratolil <br /> CER TIFICA TE OF ANALYSIS <br /> Tuesc qv,,April 12,2005 <br /> Attention: Francis X. Bean <br /> Kleinfelder,Inc. <br /> 2825 East Myrtle Street Report Page 7of39 <br /> Stockton, CA 95205 <br /> Metals by EPA 6000/7000 Series Methods <br /> Sample/reformation <br /> Sample ID: 34751 -E-NW Sample Type: Grab <br /> Laboratory ID: 5041107-02 Project Name: SJRTD <br /> Date/Time Sampled. 11-Apr-05 11:29 by Francis X.Bean Sample Matrix: Soil <br /> Test Parameter Result DLR Unit Dilution Batch Prepared Analvsis Date Method Notes <br /> Cadmium ND 0.100 mg/kg 1 AD51114 11-Apr-05 11-Apr-05 EPA6010A <br /> Chromium 22.0 0.500 mg/kg 1 AD51114 11-Apr-05 11-Apr-05 EPA 6010A <br /> Hexavalent Chromium ND 0.10 mg/kg 1 AD51115 11-Apr-05 11-Apr-05 EPA 7196A <br /> Nickel 15.6 0.500 mg/kg 1 AD51114 11-Apr-05 11-Apr-05 EPA 6010A <br /> Lead 3.75 0.500 mg/kg 1 AD51114 11-Apr-05 11-Apr-05 EPA 6010A <br /> Zinc 26.0 0.500 mg/kg 1 AD51114 11-Apr-05 11-Apr-05 EPA 6010A <br /> mg/L=milligrams per Liter=ppm DLR=Defection Limit for purpose of Reporting. <br /> ugI=micrograms per Liter=ppb Exceptional sample matrices or interferences may <br /> result in higher defection limits. <br /> RESPECTFULLY SUBMITTED, <br /> 1�j 100-lre� <br /> Jonathan Le,Laboratory Director <br /> "43 N. West Lane, Suite B2 .Stockton CA. 95210 phone: (209) 477-8105 Fa-v: (209) 477-8148 <br />