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..► <br /> o7g@H laboratories <br /> Condor Earth Technologies,Inc. Project Number: 5401 <br /> 188 Frank West Circle Project Name: 216 N.California St.Closure Work Order No.: <br /> Stockton,CA 95206 Project Manager: Bill Cook I802060 <br /> Total Lead by Flame AA EPA Method 7420-Quality Control <br /> Argon Laboratories <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch I800396-3050B <br /> Blank(I800396-BLK1) Prepared&Analyzed:02/22/08 <br /> _ Lead ND 1.0 mg/kg <br /> LCS(I800396-BS1) Prepared&Analyzed:02/22/08 <br /> Lead 10.0 mg/kg 10.0 100 70-130 <br /> LCS Dup(I800396-BSD1) Prepared&Analyzed:02/22/08 <br /> Lead 10.0 mg/kg 10.0 100 70-130 0 20 <br /> Matrix Spike(I800396-MS1) Source:I802044-02 Prepared&Analyzed:02/22/08 <br /> Lead 14.0 mg/kg 10.0 4.2 98 70-130 <br /> Matrix Spike Dup(I800396-MSD1) Source:I802044-02 Prepared&Analyzed:02/22/08 <br /> Lead 13.9 mg/kg 10.0 4.2 97 70-130 0.7 20 <br /> i <br /> Appi Dved By <br /> Argc n Laboratories,Inc. California D.O.H.S.Cert.#2359 <br /> 2905 Railroad Avenue, Ceres, CA 95307 • Phone (209) 581-9280 • Fax (209) 581-9282 <br /> email: info@argonlabs.com Page 9 of 11 <br />