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• www.energylab.com Helena,MT 877-472-0711 •Billings,MT 800-735- 489•Casper,WY 888-235-0515 <br /> +*� - °C°ftN 1952 f Gillette,WY 866-666-7175•Rapid City,SO 888-672-1225•College Station,TX 888-690-2218 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br /> Client: Cotter Corporation Report Date: 04/28/14 <br /> Project: Schwartz GW 04/09/14 S27455, S27457 Work Order: C14040376 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: RA-05 Batch: RA228-4644 <br /> Lab ID: LCS-228-RA226-7142 Laboratory Control Sample Run:TENNELEC-3_140411 D 04/16/14 15:29 <br /> Radium 228 7.3 pCi/L 105 80 120 <br /> Lab ID: MB-RA226-7142 3 Method Blank Run:TENNELEC-3 140411 D 04/16/14 15:29 <br /> Radium 228 -0.2 pCi/L U <br /> Radium 228 precision(±) 0.8 pCi/L <br /> Radium 228 MDC 1 pCi/L <br /> Lab ID: C14040376-001EMS Sample Matrix Spike Run:TENN ELEC-3-14041 1 D 04/16/14 15:29 <br /> Radium 228 17 pCi/L 109 70 130 <br /> Lab ID: C14040376-001 EMSD Sample Matrix Spike Duplicate Run:TENN ELEC-3-14041 1 D 04/16/14 15:29 <br /> Radium 228 17 pCi/L 110 70 130 0.9 37.4 <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 22 of 26 <br />