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• www.eneWabsam Hdena, MT 677-472-0711 • Billings, Mi800-735-4 99 • Casper, WY 888-235-0515 <br />AN~Ews ec am Im Y ? O'lI6tto; ,FW t166 6K-7175 • Rapid City, SD$98-672-1225 • College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 09/14/10 <br />Project: Schwartzwalder Water Monitoring Program Work Order: C10080538 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Quai <br />Method: E903.0 Batch: RA226-4736 <br />Sample ID: C10080405-004BMS Sample Matrix Spike Run: BERTHOLD 770-1_100820A 08/28/10 10:09 <br />Radium 226 19 pCi/L 121 70 130 <br />Sample ID: C10080405-004BMSD <br />Radium 226 <br />Sample ID: MB-RA226-4736 <br />Radium 226 <br />Radium 226 precision (±) <br />Radium 226 MDC <br />Sample ID: LCS-RA226-4736 <br />Radium 226 <br />Method: E903.0 <br />Sample ID: 010080605-001HMS <br />Radium 226 <br />Sample ID: 010080605-001HMSD <br />Radium 226 <br />Sample ID: MB-RA226-4747 <br />Radium 226 <br />Radium 226 precision (±) <br />Radium 226 MDC <br />Sample ID: LCS-RA226-4747 <br />Radium 226 <br />Sample Matrix Spike Duplicate Run: BERTHOLD 770-1 _100820A 08/28/10 10:09 <br />18 pCi/L 117 70 130 4.5 23.8 <br />3 Method Blank Run: BERTHOLD 770-1 100820A 08/28/10 13:18 <br />0.08 pCi/L U <br />0.1 pCi/L <br />0.2 pCi/L <br />Laboratory Control Sample Run: BERTHOLD 770-1 _100820A 08/28/10 13:18 <br />9.5 pCi/L 120 70 130 <br />Batch: RA226-4747 <br />Sample Matrix Spike Run: BERTHOLD 770-2_100825A 09/08/10 09:30 <br />15 pCi/L 97 70 130 <br />Sample Matrix Spike Duplicate Run: BERTHOLD 770-2_100825A 09/08/10 09:30 <br />15 pCi/L 97 70 130 0.6 23.7 <br />3 Method Blank Run: BERTHOLD 770-2100825A 09/08/10 11:06 <br />-0.1 pCi/L U <br />0.10 pCi/L <br />0.2 pCi/L <br />Laboratory Control Sample Run: BERTHOLD 770-2_100825A 09/08/10 11:06 <br />8.9 pCi/L 114 70 130 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 24 of 31