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www.emdab.com Helena, wr 877 - 472 -0711 - Billings, MT 800 - 735-4489 - Casper, WY 888- 235 -0515 <br />- AsslyLfalFie�rna3iiocs 195? Gillette, WY 866 -686 -7175 - Rapid City, So 886 -672 -1225 - college station, TX 888 - 680 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz -GW 12/1/14 S27819 <br />Analyte <br />Count Result Units <br />Method: E903.0 <br />Lab ID: LCS -RA226 -7486 <br />Laboratory Control Sample <br />Radium 226 <br />12 pCi /L <br />Lab ID: MB -RA226 -7486 <br />3 Method Blank <br />Radium 226 <br />0.06 pCi /L <br />Radium 226 precision ( ±) <br />0.1 pCi /L <br />Radium 226 MDC <br />0.2 pCi /L <br />Lab ID: C14120020- 001AMS <br />Sample Matrix Spike <br />Radium 226 <br />26 pCi /L <br />Lab ID: C14120020- 001AMSD <br />Sample Matrix Spike Duplicate <br />Radium 226 <br />23 pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 12/18/14 <br />Work Order: C14120084 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: RA226 -7486 <br />Run: G5000W_141203B 12/16/14 07:32 <br />109 80 120 <br />Run: G5000W 141203B 12/16/14 07:32 <br />U <br />Run: G5000W_141203B 12/16/14 07:32 <br />114 70 130 <br />Run: G5000W_141203B 12/16/14 07:32 <br />100 70 130 13 21.2 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 7 of 12 <br />