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• www.erwdab.com Helena,U 677-472-0711 •Billings,M Y 800-735-4489•Casper,WY 888-235-0515 <br /> - Au"WE=d* .since 7952 Gillette,WY 866-606-7175•Rapid City,SD 888-672-1225•College Station,TX 888-600-2218 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br /> Client: Cotter Corporation Report Date: 06/17/14 <br /> Project: Schwartz GW 5/22/14 S27512, S27513 Work Order: C14050752 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: E903.0 Batch: RA226-7200 <br /> Lab ID: C14050752-001 EMS Sample Matrix Spike Run: BERTHOLD 770-2_140529B 06/04/14 06:59 <br /> Radium 226 24 pCi/L 106 70 130 <br /> Lab ID: C14050752-001EMSD Sample Matrix Spike Duplicate Run:BERTHOLD 770-2_140529B 06/04/14 06:59 <br /> Radium 226 26 pCi/L 111 70 130 4.2 22.2 <br /> Lab ID: MB-RA226-7200 3 Method Blank Run:BERTHOLD 770-2 140529B 06/04/14 06:59 <br /> Radium 226 0.1 pCi/L U <br /> Radium 226 precision(±) 0.1 pCi/L <br /> Radium 226 MDC 0.2 pCi/L <br /> Lab ID: LCS-RA226-7200 Laboratory Control Sample Run:BERTHOLD 770-2_140529B 06/04/14 06:59 <br /> Radium 226 13 pCi/L 114 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 20 of 24 <br />