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• wwwenergylabcom Helena,IT$77-472-0711 •Billings,MIT 800-735-4489•Casper,WY 888-235-0515 <br /> Am IM Gillette,WY 866-686 7175•Rapid City,SD 886-672-1225•College Station,TX 888-690-2210 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br /> Client: Cotter Corporation Report Date: 05/13/14 <br /> Project: Schwartz-GW 4/23/14 S27445 Work Order: C14040728 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: E903.0 Batch:RA226-7164 <br /> Lab ID: C14040728-001 EMS Sample Matrix Spike Run:BERTHOLD 770-2_140425A 05/03/14 04:28 <br /> Radium 226 30 pCi/L 96 70 130 <br /> Lab ID: C14040728-001 EMSD Sample Matrix Spike Duplicate Run: BERTHOLD 770-2_140425A 05/03/14 06:19 <br /> Radium 226 24 pCi/L 73 70 130 20 21.8 <br /> Lab ID: LCS-RA226-7164 Laboratory Control Sample Run:BERTHOLD 770-2_140425A 05/03/14 06:19 <br /> Radium 226 12 pCi/L 108 80 120 <br /> Lab ID: MB-RA226-7164 3 Method Blank Run:BERTHOLD 770-2 140425A 05/03/14 06:19 <br /> Radium 226 0.2 pCi/L U <br /> Radium 226 precision(±) 0.2 pCi/L <br /> Radium 226 MDC 0.2 pCi/L <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 17 of 20 <br />