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ENERGY <br />A <br />Client: Cotter Corporation <br />Project: Schwartz GW 6/8/11 S25836 <br />Method: E903.0 <br />Sample ID: C11060158 -001 FMS <br />Radium 226 <br />Sample ID: C11060158 -001 FMSD <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 />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />www.energylab.com <br />AeNErrcammcr stair 1052 <br />Sample Matrix Spike <br />14 pCi /L <br />Sample Matrix Spike Duplicate <br />16 pCi /L <br />3 Method Blank <br />0.01 <br />0.09 <br />0.2 <br />pCi /L <br />pCi /L <br />pCi /L <br />Laboratory Control Sample <br />5.8 pCi /L <br />Helene, Mf B77 -472 -0711 • Billings, MT B00- 735 -4489 • Casper, WY 888- 235 -0515 <br />Gillette, WY 86B -686 -7175 • Rapid City, SD 886 -872 -1225 • College Station, 1X 888 -690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Run: G542M_11061 OA <br />106 70 130 <br />Run: G542M_11061 OA <br />117 70 130 <br />Run: G542M 110610A <br />Run: G542M_11061 OA <br />92 85 115 <br />Report Date: 07/28/11 <br />Work Order: C11060459 <br />Analyte Count <br />Result Units <br />RL %REC Low Limit High Limit RPD RPDLimit Quai <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Batch: RA226 -5422 <br />06/20/11 13:13 <br />06/20/11 13:13 <br />8.8 23.7 <br />Page 15 of 19 <br />06/20/11 14:53 <br />U <br />06/20/11 14:53 <br />