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I <br /> Pace Analytical f <br /> aceAnalytical <br /> 1673 Terra Avenue Sheridan,WY 82801 ph:(307)672-8945 <br /> Sample Analysis Report <br /> Company: Energy Fuels Resources(USA)Inc. Date Reported 3/22/2023 <br /> 225 Union Blvd.Suite 600 Report ID: S2302101001 <br /> Lakewood,CO 80228 <br /> ProjectName: Whirlwind WorkOrder: S2302101 <br /> Lab ID: S2302101-001 CollectionDate: 2/8/2023 3:19:00 PM <br /> ClientSample ID: 2022 Whirlwind WR-Composite DateReceived: 2/8/2023 3:23:00 PM <br /> COC: 194199 FieldSampler: <br /> PWS ID: Matrix: Leachate <br /> Comments <br /> Analyses Result Units Qual RL Method Date AnalyzedAnit <br /> Metals-Total <br /> Phosphorus 0.4 mg/L 0.1 EPA 200.7 02113120231746 DG <br /> Silica as Si02 94.5 mg/L 0.5 EPA 200.7 02113/20231746 DG <br /> Metals-Total Recoverable <br /> Aluminum 22.6 mg/L 0.04 EPA 200.7 02/13/2023 1746 DG <br /> Antimony ND mg/L 0.005 EPA 200.8 02/13/2023 2013 MS <br /> Arsenic 0.034 mg/L 0.005 EPA 200.8 02/13/2023 2013 MS <br /> Barium ND mg/L 0.5 EPA 200.8 02/13/2023 2013 MS <br /> Boron 0.14 mg/L 0.05 EPA 200.7 02113120231746 DG <br /> Cadmium ND mg/L 0.002 EPA 200.8 02/13/2023 2013 MS <br /> Chromium ND mg/L 0.01 EPA 200.7 02/13120231746 DG <br /> Copper 0.03 mg/L 0.01 EPA 200.8 02/13/2023 2013 MS <br /> Iron 11.1 mg/L 0.05 EPA 200.7 02113/2023 1746 DG <br /> Lead 0.028 mg/L 0.002 EPA 200.8 02/13/2023 2013 MS <br /> Manganese 0.11 mg/L 0.02 EPA 200.7 02/13/2023 1746 DG <br /> Mercury ND mg/L 0.001 EPA 245.1 03/01/20231639 JGU <br /> Molybdenum ND mg/L 0.02 EPA 200.8 02/13/2023 2013 MS <br /> Nickel ND mg/L 0.01 EPA 200.7 02113/20231746 DG <br /> Selenium 0.009 mg/L 0.005 EPA 200.8 02/13/2023 2013 MS <br /> Silver ND mg/L 0.003 EPA 200.8 02/13/2023 2013 MS <br /> Thallium ND mg/L 0.001 EPA 200.8 02/13/2023 2013 MS <br /> Uranium 0.002 mg/L 0.001 EPA 200.8 02/13/2023 2013 MS <br /> Vanadium 0.04 mg/L 0.02 EPA 200.8 02/13/2023 2013 MS <br /> Zinc 0.06 mg/L 0.02 EPA 200.7 02/13/2023 1746 DG <br /> Radionuclides-Dissolved <br /> Gross Alpha 4.2 pCi/L 2 SM 7110B 03/03/20231058 AEF <br /> Gross Alpha Precision(±) 0.8 pCi/L SM 7110E 03103/20231058 AEF <br /> Gross Beta 4.2 pCi/L 3 SM 7110E 03/03/20231058 AEF <br /> Gross Beta Precision(±) 0.8 pCill- SM 7110B 03/03/20231058 AEF <br /> Radium 226 ND pCi/L 2 Ga-Tech 03/16/20231738 WN <br /> Radium 226 Precision(±) NA pCi/L Ga-Tech 03/16/20231738 WN <br /> Radium 228 ND pCi/L 2 Ga-Tech 03/16/20231738 WN <br /> Radium 228 Precision(±) NA pCi/L Ga-Tech 03/16/20231738 WN <br /> Thorium 230 1.6 pCi/L B 0.2 ACW10 02128/20231518 AEF <br /> Thorium 230 Precision(±) 0.8 pCi/L B ACW10 02/28/20231518 AEF <br /> Uranium 0.3 piC/L 0.2 Calculation 03/03/20231040 WN <br /> These results apply only to the samples tested. Page 2 of 2 <br />