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www.enerdab.com Helena,W 577-472-0711 •Billings,W 800-7354480•Casper,WY 888-235-0515 <br /> Aa'"M Endaw Swe lam? Gillette,WY 866-686-7175•Rapid City,SD 888-672-1225•College Station,TX 888-680-2218 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br /> Client: Cotter Corporation Report Date: 07/14/14 <br /> Project: Schwartz-GW 6/25/14 S27546, S27547 Work Order: C14060931 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: E903.0 Batch: RA226-7252 <br /> Lab ID: C14060931-001 EMS Sample Matrix Spike Run:BERTHOLD 770-2_140702A 07/12/14 11:46 <br /> Radium 226 19 pCi/L 82 70 130 <br /> Lab ID: C14060931-001EMSD Sample Matrix Spike Duplicate Run:BERTHOLD 770-2_140702A 07/12/14 11:46 <br /> Radium 226 20 pCi/L 84 70 130 2.4 22.8 <br /> Lab ID: MB-RA226-7252 3 Method Blank Run:BERTHOLD 770-2 140702A 07/12/14 13:33 <br /> Radium 226 -0.009 pCi/L U <br /> Radium 226 precision (±) 0.10 pCi/L <br /> Radium 226 MDC 0.2 pCi/L <br /> Lab ID: LCS-RA226-7252 Laboratory Control Sample Run:BERTHOLD 770-2_140702A 07/12/14 13:33 <br /> Radium 226 9.9 pCi/L 87 80 120 <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 19 of 23 <br />