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Trust our People. Trust our Data. Billings, MT 800.735.4489 • Casper, WY 888.135.0515 <br />www.eneigyiab.com College Station, TX 888.690.2218 • Gillette. WY 866.686.7175 • Helena. MT 877.411.0711 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz - GW 4/21/15 S27905, S27908 <br />Analyte Count Result Units <br />Method: E903.0 <br />Lab ID: MB-RA226-7642 <br />3 Method Blank <br />Radium 226 <br />0.2 pCi/L <br />Radium 226 precision (t) <br />0.1 pCi/L <br />Radium 226 MDC <br />0.1 pCi/L <br />Lab ID: LCS-RA226-7642 <br />Laboratory Control Sample <br />Radium 226 <br />9.2 pCi/L <br />Lab ID: C15040743-003CMS <br />Sample Matrix Spike <br />Radium 226 <br />19 pCi/L <br />Lab ID: C15040743-003CMSD <br />Sample Matrix Spike Duplicate <br />Radium 226 <br />21 pCi/L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 05/20/15 <br />Work Order: C15040681 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: RA226-7642 <br />Run: TENNELEC-3 150430B 05/06/15 07:37 <br />Run: TENNELEC-3_150430B 05/06/15 07:37 <br />88 80 120 <br />Run: TENNELEC-3_150430B 05/06/15 07:37 <br />81 70 130 <br />Run: TENNELEC-3_150430B 05/06/15 07:37 <br />89 70 130 8.1 49.3 <br />ND - Not detected at the reporting limit. <br />Page 16 of 21 <br />