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ENERGY Cf) Trust our People-Trust our Data Billings,MT 406.252.6325•Casper WY 307.235.0515 <br /> I_AI OI fo,2i_S Gillette,WY 307.686.7175•Helena,MT 406.442.0711 <br /> QA/QC Summary Report <br /> Prepared by Casper,WY Branch <br /> Client: Energy Fuels Resources(USA) Inc Work Order: C24050081 Report Date: 05/15/24 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> I J <br /> Method: A4500-S F Batch ttrsulfide240506A <br /> Lab ID: MBLK Method Blank Run TITRATION 240506A 05/06/24 13 21 <br /> Sulfide 0 6 mg/L 0 5 <br /> Lab ID: LCS Laboratory Control Sample Run TITRATION_240506A 05/06/24 13 21 <br /> Sulfide 121 mg/L 5 0 101 90 110 <br /> Lab ID: C24050081-001EMS Sample Matrix Spike Run TITRATION_240506A 05/06/24 13.21 <br /> Sulfide 24 6 mg/L 1 0 100 70 130 <br /> Lab ID: C24050081-001EMSD Sample Matrix Spike Duplicate Run TITRATION_240506A 05/06/24 13 21 <br /> Sulfide 24 5 mg/L 1 0 99 70 130 0 7 20 <br /> Qualifiers: <br /> RL-Analyte Reporting Limit ND-Not detected at the Reporting Limit(RL) <br /> Page 16 of 28 <br />