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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 16 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 T2 SSW 10 Sample Type: Grab <br /> Laboratory ID: 5041907-06 Project Name: SJRTD <br /> Date/Time Sampled: 19-Apr-05 14:10 by Doug Heard Sample Matrix: Soil <br /> Test Parameter Result DLR Unit Dilution Batch Prepared Analysis Date Method Notes <br /> Cadmium ND 0.100 mg/kg 1 AD51909 19-Apr-05 19-Apr-05 EPA 6010A <br /> Chromium 26.2 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 28.4 0.500 mg/kg 1 AD51909 19-Apr-05 19-Apr-05 EPA 6010A <br /> Lead 7.40 0.500 mg/kg 1 AD51909 19-Apr-O5 19-Apr-05 EPA 6010A <br /> Zinc 32.2 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 ofRepornng. <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 /> "143.N. West Lane. Suite B2 Stockton CA. 95210 Dhone: (209) 477-8105 Fax: (209) 477-8148 <br />