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• www.enerUlab.com Helena,MT 077-472-0711 •Billings,MT 800-735-4489•Casper,WY 888-2354515 <br /> "=A=tit Gillette,WY 066-686-7175•Rapid City,SD 886-672-1225•College Station,TX 888-698-2218 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br /> Client: Cotter Corporation Report Date: 05/21/14 <br /> Project: Schwartz-SW 5/1/14 S27466 Work Order: C14050047 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: RA-05 Batch: RA228-4661 <br /> Lab ID: LCS-228-RA226-7180 Laboratory Control Sample Run:TENNELEC-3_140507C 05/12/14 12:08 <br /> Radium 228 8.4 pCi/L 112 80 120 <br /> Lab ID: MB-RA226-7180 3 Method Blank Run:TENNELEC-3 140507C 05/12/14 12:08 <br /> Radium 228 0.5 pCi/L U <br /> Radium 228 precision(±) 0.8 pCi/L <br /> Radium 228 MDC 1 pCi/L <br /> Lab ID: C14050093-001EMS Sample Matrix Spike Run:TENNELEC-3_140507C 05/12/14 12:08 <br /> Radium 228 17 pCi/L 113 70 130 <br /> Lab ID: C14050093-001EMSD Sample Matrix Spike Duplicate Run:TENNELEC-3_140507C 05/12/14 12:08 <br /> Radium 228 17 pCi/L 112 70 130 0.4 35.8 <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 24 of 27 <br />