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9womTrust our People.Trust our Data. Billings,MT 800.735.4489•Casper,WY 888.235.0515 <br /> - www.energylab.com 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: C19060940 Report Date: 08/06/19 <br /> FAnalyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: RA-05 Batch: RA228-6056 <br /> Lab ID: LCS-228-RA226-9355 Laboratory Control Sample Run:TENNELEC-3_190703B 07/31/19 13:39 <br /> Radium 228 9.9 pCi/L 111 80 120 <br /> Lab ID: MB-RA226-9355 3 Method Blank Run:TENNELEC-3_190703B 07/31/19 13:39 <br /> Radium 228 0.6 pCi/L U <br /> Radium 228 precision(±) 0.8 pCi/L <br /> Radium 228 MDC 1 pCi/L <br /> Lab ID: C19060936-025BMS Sample Matrix Spike Run:TENNELEC-3_190703B 07/31/19 13:39 <br /> Radium 228 19 pCi/L 99 70 130 <br /> Lab ID: C19060936-025BMSD Sample Matrix Spike Duplicate Run:TENNELEC-3_190703B 07/31/19 13:39 <br /> Radium 228 16 pCi/L 85 70 130 14 20 <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 31 of 35 <br />