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www.anargyla6.com Helena, MT 877-472-0711 Billings, MT 800-735-4489 • Casper WY 888-235-0515 <br />Aneryticrl LrcarlenceSince 1957 j Gillette, WY 866-686.7175 a Rapid City, Sit 888-672-1225 8 College Station, TX 808-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Monitoring Program - SW <br />Analyte <br />Method: E903.0 <br />Sample ID: C10110265-OOIDMS <br />Radium 226 <br />Sample ID: 010110265-001 DMSD <br />Radium 226 <br />Sample ID: MB-RA226-4978 <br />Radium 226 <br />Radium 226 precision (±) <br />Radium 226 MOC <br />Sample ID: LCS-RA226-4978 <br />Radium 226 <br />Count Result Units <br />Sample Matrix Spike <br />19.6 pCi/L <br />Sample Matrix Spike Duplicate <br />19.7 pCi/L <br />3 Method Blank <br />-0.1 pCi/L <br />0.07 pCi/L <br />0.2 pCi/L <br />Laboratory Control Sample <br />9.0 pCi/L <br />RL %REC Low Limit High Limit <br />Run: BERTHOLD 77 <br />Report Date: 12/10/10 <br />Work Order: C10110203 <br />RPD RPDLimit Qual <br />Batch: RA226-4978 <br />0-21011080 11/17/1016:57 <br />111 70 130 <br />Run: BERTHOLD 770-2_.1011081) <br />110 70 130 0.1 <br />Run: BERTHOLD 770-2_101108D <br />Run: BERTHOLD 770-2_101108D <br />115 70 130 <br />11/17/1016:57 <br />22.3 <br />11/17/10 16:57 <br />U <br />11/17110 16;57 <br />Method: E903.0 <br />Sample to: C10110203-001FMS <br />Radium 226 <br />Sample ID: C10110203-001FMSD <br />Radium 226 <br />Sample ID: MB-RA226-5005 <br />Radium 226 <br />Radium 226 precision (±) <br />Radium 226 MDC <br />Sample ID: LCS-RA226-5005 <br />Radium 226 <br />Sample Matrix Spike <br />16 pCi/L <br />Sample Matrix Spike Duplicate <br />16 pCi/L <br />3 Method Blank <br />-0.1 pCi/L <br />0.08 pCi/L <br />0.2 pCi/L <br />Laboratory Control Sample <br />8.0 pCi/L <br />Run: BERTHOLD 770.2_101115A <br />99 70 130 <br />Run: BERTHOLD 770-2_101115A <br />103 70 130 2.9 <br />Run: BERTHOLD 770.2_101115A <br />Run: BERTHOLD 770-2_101115A <br />103 70 130 <br />Batch: RA226.5005 <br />11/29/10 21:12 <br />11/29110 21:12 <br />24.7 <br />11 /29/10 22:52 <br />U <br />11 /29/10 22:52 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration U - Not detected at minimum detectable concentration <br />Page 31 of 43