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r Page. 1 <br /> Precision Enviro-Tech Date: i9i98 <br /> Analytical Laboratory <br /> 2040 E. Harding Way, Suite 8 Stockton, CA. 95205 <br /> Phone: 12091 462-0892 Fax: 1209/462-79 <br /> Certificate of Analysis <br /> William Little <br /> Advanced GeoEnvironmental, Inc. Customer ID: ADGEO <br /> 4005 N. Wilson Way <br /> Stockton CA. 95205 <br /> Sample Information <br /> Lab Sample ID: PE1559-06A Sample Matrix: Soil <br /> Sample Description: Stockpile B-2 Sampler Name: Jonathan Le <br /> Date Sampled: 12/18/97 1:18:00 AM Project Name: 430 S. EI Dorado St. <br /> Digestion Method: EPA3050 <br /> Analytical Result <br /> Parameter Method DLR Units Result <br /> Cadnium (Cd) EPA 6010 0.1 ' mg/Kg No <br /> Chromium (Cr) EPA 6010 1 1 mg/Kg ND <br /> Chromium (VI) (Cr +6) EPA 7196 0.5 mg/K ND <br /> Nickel (Ni) EPA 6010 1 mg/Kg ND <br /> Zinc (Zn) EPA 6010 1 mg/kg 5.7 <br /> Respec fully s b ' ted, <br /> GL <br /> Labor tory Director <br /> Hao V. Le, B.S <br /> ND- None Detected DLR-Detection Limit for the Purpose of ReportingConversions: <br /> mg/L-milligrams/Liter = ppm Exceptional sample matrices or interferences 1 ppm= 1000 ppb <br /> mg/kg-milligrams/kilogram = ppm may result in higher detection limits 1 ppb=0.001 ppm <br /> ug/kg-micrograms/kilogram = ppb DLR=DLR X Dilution Factor < DLR = Trace of Analyte <br />