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ENERGY Trust our Peop le.TrustourData Billings,MT 406.252.6325•Casper,WY 307.235.0515 <br /> LA=.or.ATo4.ES Gillette,WY 307.686.7175•Helena MT 406.442.0711 <br /> LABORATORY ANALYTICAL REPORT <br /> Prepared by Casper,WY Branch <br /> Client: Energy Fuels Resources (USA) Inc Report Date: 05/29/24 <br /> Project: Whirlwind Collection Date: 05/01/24 09 20 <br /> Lab ID: C24050081-001 DateReceived: 05/02/24 <br /> Client Sample ID: PR Spring Matrix: Aqueous <br /> MCL/ <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date/By <br /> DATA QUALITY <br /> A/C Balance 1 81 % A1030 E 05/14/24 14 57/dmb <br /> Anions 8 64 meq/L A1030 E 05/14/24 14 57/dmb <br /> Cations 8 96 meq/L A1030 E 05/14/24 14 57/dmb <br /> RADIONUCLIDES,TOTAL <br /> Radium 226 5 4 pCi/L E903 0 05/14/24 10 41/alb <br /> Radium 226 precision(±) 1 1 pCi/L E903 0 05/14/24 10 41 /alb <br /> Radium 226 MDC 0 2 pCi/L E903 0 05/14/24 10 41/alb <br /> Radium 228 0 7 pCi/L U RA-05 05/09/24 13 03/trs <br /> Radium 228 precision(±) 0 6 pCi/L RA-05 05/09/24 13 03/trs <br /> Radium 228 MDC 0 9 pCi/L RA-05 05/09/24 13 03/trs <br /> Radium 226+Radium 228 5 8 pCi/L A7500-RA 05/15/24 10 52/dmf <br /> Radium 226+Radium 228 precision(±) 1 2 pCi/L A7500-RA 05/15/24 10 52/dmf <br /> Radium 226+Radium 228 MDC 0 9 pCi/L A7500-RA 05/15/24 10 52/dmf <br /> Report RL-Analyte Reporting Limit MCL-Maximum Contaminant Level <br /> Definitions: QCL-Quality Control Limit ND-Not detected at the Reporting Limit(RL) <br /> U-Not detected at Minimum Detectable Concentration <br /> (MDC) <br /> Page 5 of 28 <br />