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ENERGY <br />LAHOPAI 01411 S <br />Client: Cotter Corporation <br />Project: Schwartz GW 6/2/11 S25801 <br />Method: E903.0 <br />Sample ID: 011060158- 001FMS <br />Radium 226 <br />Sample ID: C11060158- 001FMSD <br />Radium 226 <br />Sample ID: MB -RA226 -5422 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Sample ID: LCS -RA226 -5422 <br />Radium 226 <br />warw.energylab.com <br />Att disal Excence Sim 1852 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Sample Matrix Spike <br />14 pCi /L <br />Sample Matrix Spike Duplicate <br />16 pCi /L <br />3 Method Blank <br />0.012 <br />0.089 <br />0.15 <br />pCi /L <br />pCi /L <br />pCi /L <br />Laboratory Control Sample <br />5.8 pCi /L <br />Helena, MT 877- 472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 888 -235 -0515 <br />Gillette, WY 866- 686 -7175 • Rapid City, SD 888 - 672 -1225 • College Station, TX 888 - 690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 07/07/11 <br />Work Order: C11060160 <br />Analyte Count <br />Result Units <br />RL %REC Low Limit High Limit RPD RPDLimit Quai <br />Run:G542M_11061OA <br />106 70 130 <br />Run: G542M_11061 OA <br />117 70 130 <br />Run: G542M_11061OA <br />Run: G542M_110610A <br />92 85 115 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />06/20/11 13:13 <br />8.8 23.7 <br />Page 14 of 18 <br />Batch: RA226 -5422 <br />06/20/11 13:13 <br />06/20/11 14:53 <br />U <br />06/20/11 14:53 <br />