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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Wednesday,April 20,2005 <br /> Attention: Doug Heard <br /> Kleinfelder, Inc. Report Page 12 of 26 <br /> 2825 Myrtle St. <br /> Stockton. CA 95205 <br /> Metals by EPA 6000/7000 Series Methods <br /> Sample Information <br /> Sample ID: 31191 T2WT 6 Sample Type: Grab <br /> Laboratory ID: 5041907-04 Project Name: SJRTD <br /> Date/Time Sampled: 19-Apr-05 13:55 by Doug Heard Sample Matrix: Soil <br /> Test Parameter Result DLR Unit Dilution Batch Prepared Analysis Date Method Notes <br /> Cadmium 0.100 0.100 mg/kg 1 AD51909 19-Apr-05 19-Apr-05 EPA 6010A <br /> Chromium 24.1 0.500 mg/kg 1 AD51909 19-Apr-05 19-Apr-05 EPA 6010A <br /> Hexavalent Chromium NO 0.10 mg/kg 1 AD51913 19-Apr-05 19-Apr-05 EPA 7196A <br /> Nickel 33.0 0.500 mg/kg 1 AD51909 19-Apr-05 19-Apr-05 EPA 6010A <br /> Lead 6.50 0.500 mg/kg 1 AD51909 19-Apr-05 19-Apr-05 EPA 6010A <br /> Zinc 28.5 0.500 mg/kg 1 AD51909 19-Apr-05 19-Apr-05 EPA 6010A <br /> mg/L=milligrams per Liter=ppm DLR=Detection Limit for purpose 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 /> Jonathan Le,Laboratory Director <br /> 7743 N. West Lane. Suite B2 Stockton CA 952.10 Ohone: (209) 47'-8105 Fax: 10.91 477-8148 <br />