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ETrustourPeo People. rust our Data. Billings, MT 800.735.4489 • Casper, WY 888.235.0515 <br />� <br />College Station, TX 888.690 2218 • Gillette, WY 866.686.7175 • Helena, MT 877.472.0711 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 06/02/15 <br />Project: Schwartz - SW 5/1/15 S27880, S27882 Work Order: C15050078 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E903.0 <br />Lab ID: MB-RA226-7650 <br />Radium 226 <br />Radium 226 precision (t) <br />Radium 226 MDC <br />Lab ID: LCS-RA226-7650 <br />Radium 226 <br />Lab ID: C15050084-001IMS <br />Radium 226 <br />Lab ID: C15050084-0011MSD <br />Radium 226 <br />Method: E903.0 <br />Lab ID: MB-RA226-7649 <br />Radium 226 <br />Radium 226 precision (t) <br />Radium 226 MDC <br />Lab ID: LCS-RA226-7649 <br />Radium 226 <br />Lab ID: 015050082-001HMS <br />Radium 226 <br />Lab ID: C15050082-001HMSD <br />Radium 226 <br />3 Method Blank <br />-0.08 pCi/L <br />0.08 pCi/L <br />0.2 pCi/L <br />Laboratory Control Sample <br />8.5 pCi/L <br />Sample Matrix Spike <br />20 pCi/L <br />Sample Matrix Spike Duplicate <br />20 pCi/L <br />3 Method Blank <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />-0.04 pCi/L <br />0.10 pCi/L <br />0.2 pCi/L <br />Laboratory Control Sample <br />9.2 pCi/L <br />Sample Matrix Spike <br />19 pCi/L <br />Sample Matrix Spike Duplicate <br />19 pCi/L <br />Run: BERTHOLD 770-2_150507A <br />Run: BERTHOLD 770-2150507A <br />83 80 120 <br />Run: BERTHOLD 770-2150507A <br />95 70 130 <br />Run: BERTHOLD 770-2150507A <br />96 70 130 0.5 <br />Run: BERTHOLD 770-2150507B <br />Run: BERTHOLD 770-2150507B <br />90 80 120 <br />Run: BERTHOLD 770-2150507B <br />91 70 130 <br />Run: BERTHOLD 770-2150507B <br />89 70 130 2.0 <br />Batch: RA226-7650 <br />05/13/15 06:31 <br />U <br />05/13/15 06:31 <br />05/13/15 08:22 <br />05/13/15 08:22 <br />49.5 <br />Batch: RA226-7649 <br />05/18/15 08:14 <br />U <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />05/18/15 08:14 <br />05/18/15 10:17 <br />05/18/15 10:17 <br />49.6 <br />Page 25 of 31 <br />