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ENERGY <br />AHORAI ORIE.S <br />Client: Cotter Corporation <br />Project: Schwartz GW 5/26/11 S25771 <br />Method: E903.0 <br />Sample ID: C11050901- 002FMS <br />Radium 226 <br />Sample ID: C11050901 002FMSD <br />Radium 226 <br />Sample ID: MB - RA226 - 5393 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Sample ID: LCS - RA226 - 5393 <br />Radium 226 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />■ww.enerjlab.com' <br />Aealjdtal Endow Ow= <br />Sample Matrix Spike <br />14 pCi /L <br />3 Method Blank <br />- 0.00077 <br />0.13 <br />0.22 <br />Helena, MT 877- 472 -0711 • Billings, MT B00- 735 -4489 • Casper, WY 888- 235 -0515 <br />Gillette, WY 866 -686 -7175 • Rapid City, SD 888 -672 -1225 • College Station, TX 888 - 680 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />pCi /L <br />pCi /L <br />pCi /L <br />Run: G542M_110531A <br />109 70 130 <br />Sample Matrix Spike Duplicate Run: G542M_110531A <br />12 pCi /L 92 70 130 <br />Run: G542M_110531A <br />Report Date: 07/11/11 <br />Work Order: C11050928 <br />Analyte Count <br />Result Units <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Batch: RA226 -5393 <br />06/06/11 12:55 <br />06/06/11 12:55 <br />17 28.1 <br />06/06/11 14:30 <br />U <br />Laboratory Control Sample Run: G542M_110531A 06/06/11 14:30 <br />6.8 pCi /L 109 85 115 <br />Page 16 of 20 <br />