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www.mdab.com ( Helena, iltf 877- 472 -0711 • Billings, W 600 -735 -4489 • Casper, WY 888 - 2354515 <br />Auly"Em JI Gillette, WY 666- 666 -7175 • Rapid City, SD 886472 -1225 • College Station, lx 888 -690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />pCi /L <br />Report Date: <br />12/29/14 <br />Project: Schwartz -SW 12/1/14 S27813 and S27815 <br />Work Order: <br />C14120088 <br />Analyte <br />Count Result Units <br />RL %REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: E903.0 <br />pCi /L <br />Sample Matrix Spike Duplicate <br />Batch: RA226 -7486 <br />Lab ID: LCS -RA226 -7486 <br />Laboratory Control Sample <br />Run: G5000W_141203B <br />12/16/14 07:32 <br />Radium 226 <br />12 pCi /L <br />109 80 120 <br />Lab ID: MB -RA226 -7486 <br />3 Method Blank <br />Run: G5000W_141203B <br />12/16/14 07:32 <br />Radium 226 <br />0.06 pCi /L <br />U <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 />Run: G5000W_141203B <br />12/16/14 07:32 <br />Radium 226 <br />26 pCi /L <br />114 70 130 <br />Lab ID: C14120020- 001AMSD <br />Sample Matrix Spike Duplicate <br />Run: G5000W_141203B <br />12/16/14 07:32 <br />Radium 226 <br />23 pCi /L <br />100 70 130 13 <br />21.2 <br />Method: E903.0 <br />Lab ID: LCS -RA226 -7488 <br />Radium 226 <br />Lab ID: MB -RA226 -7488 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Lab ID: C14120021- 001DMS <br />Radium 226 <br />Lab ID: C14120021- 001DMSD <br />Radium 226 <br />Laboratory Control Sample <br />12 <br />pCi /L <br />3 Method Blank <br />0.1 <br />pCi /L <br />0.1 <br />pCi /L <br />0.2 <br />pCi /L <br />Sample Matrix Spike <br />29 <br />pCi /L <br />Sample Matrix Spike Duplicate <br />29 <br />pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Run: G5000W_141204B <br />103 80 120 <br />Run: G5000W 141204B <br />Run: G5000W_141204B <br />114 70 130 <br />Run: G5000W_141204B <br />115 70 130 <br />Batch: RA226 -7488 <br />12/10/14 06:45 <br />12/10/14 06:45 <br />U <br />12/10/14 06:45 <br />12/10/14 06:45 <br />1.4 20 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 19 of 25 <br />