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® Trust our People.Trust our Data. Billings,MT 800.735.4489•Casper,WY 886.235.0515 <br /> + www.energylab.com I Gillette,WY 866.686.7175•Helena,MT 877.472.0711 <br /> QA/QC Summary Report <br /> Prepared by Casper,WY Branch <br /> Client: Energy Fuels Resources(USA) Inc Work Order: C22080249 Report Date: 08/31/22 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: E903.0 Batch:RA226-10591 <br /> Lab ID: LCS-RA226-10591 3 Laboratory Control Sample Run:G5000W 220822A 08/29/22 10-10 <br /> Radium 226 12 pCi/L 112 70 130 <br /> Radium 226 precision(t) 2.3 pCi/L <br /> Radium 226 MDC 0.27 pCi/L <br /> Lab ID: MB-RA226-10591 3 Method Blank Run:G5000W 220822A 08/29/22 10:10 <br /> Radium 226 -0.02 pCi/L U <br /> Radium 226 precision(t) 0.2 pCi/L <br /> Radium 226 MDC 0.2 pCi/L <br /> Lab ID: C22080249-005FDUP 3 Sample Duplicate Run:G5000W 220822A 08/29/22 16:50 <br /> Radium 226 3.2 pCi/L 20 30 <br /> Radium 226 precision(t) 0.65 pCi/L <br /> Radium 226 MDC 0.16 pCi/L <br /> -The RER result is 0.70. <br /> Method: E903.0 Batch. RA226-10578R <br /> Lab ID: LCS-RA226-10578 3 Laboratory Control Sample Run:G542M-2 220805A 08/16/22 12:26 <br /> Radium 226 9.3 pCi/L 91 70 130 <br /> Radium 226 precision(t) 2.0 pCi/L <br /> Radium 226 MDC 0.53 pCi/L <br /> Lab ID: MB-RA226-10578 3 Method Blank Run: G542M-2 220805A 08/16/22 12:26 <br /> Radium 226 0.08 pCi/L U <br /> Radium 226 precision(t) 0.2 pCi/L <br /> Radium 226 MDC 0.4 pCi/L <br /> Lab ID: C22080249-001FDUP 3 Sample Duplicate Run:G542M-2 220805A 08/16/22 14:19 <br /> Radium 226 6.6 pCi/L 7.0 30 <br /> Radium 226 precision(t) 1.4 pCi/L <br /> Radium 226 MDC 0.42 pCi/L <br /> -The RER result is 0.23. <br /> Qualifiers: <br /> RL-Analyte Reporting Limit ND-Not detected at the Reporting Limit(RL) <br /> U-Not detected at Minimum Detectable Concentration(MDC) <br /> Page 29 of 32 <br />