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ENERGY V/ Trust our People Trust our Data Billings MT 406.252.6325•Casper,WY 307.235.0515 <br /> LAEORATO'5IES • 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 /> MAJOR IONS <br /> Alkalinity,Total as CaCO3 302 mg/L 5 A2320 B 05/07/24 13 19/slf <br /> Bicarbonate as HCO3 368 mg/L 6 A2320 B 05/07/24 13 19/slf <br /> Chloride 21 mg/L 1 E300 0 05/04/24 03 27/slf <br /> Fluoride 0 4 mg/L 0 1 A4500-F C 05/03/24 13 27/slf <br /> Sulfate 95 mg/L 1 E300 0 05/04/24 03 27/slf <br /> Calcium 36 mg/L 1 E200 8 05/09/24 23 47/eli-b <br /> Magnesium 16 mg/L 1 E200 7 05/12/24 21 16/eli-b <br /> Potassium 5 mg/L 1 E200 8 05/09/24 23 47/eli-b <br /> Sodium 131 mg/L 1 E200 7 05/12/24 21 16/eli-b <br /> INORGANICS <br /> Sulfide ND mg/L 1 A4500-S F 05/06/24 13 21 /llsl <br /> Sulfide as Hydrogen Sulfide(H2S) ND mg/L 1 A4500-S F 05/06/24 13 21 /t1s1 <br /> PHYSICAL PROPERTIES <br /> pH 8 0 s u H 0 1 A4500-H B 05/02/24 15 22/psi <br /> pH Measurement Temp 18 1 °C A4500-H B 05/02/24 15 22/psi <br /> Solids,Total Dissolved TDS @ 180 C 508 mg/L 20 A2540 C 05/06/24 10 55/llsl <br /> Solids,Total Suspended TSS @ 105 C ND mg/L 2 A2540 D 05/07/24 09 55/psi <br /> NUTRIENTS <br /> Nitrogen,Nitrate as N 0 22 mg/L 0.05 E353 2 05/13/24 14 29/dmb <br /> Nitrogen,Nitrite as N ND mg/L 0 01 A4500-NO2 B 05/02/24 15 08/psi <br /> Nitrogen,Nitrate+Nitrite as N 0 22 mg/L 0 05 E353 2 05/03/24 16 22/dmb <br /> Phosphorus,Total as P 0 03 mg/L 0 01 E365 1 05/08/24 10 59/dmb <br /> METALS,DISSOLVED <br /> Arsenic 0 286 mg/L 0 001 E200 8 05/09/24 23 47/eli-b <br /> Barium ND mg/L 0 05 E200 8 05/09/24 23 47/eli-b <br /> Beryllium ND mg/L 0 001 E200 8 05/09/24 23 47/eli-b <br /> Boron 0 10 mg/L 0 05 E200 7 05/12/24 21 16/eli-b <br /> Cadmium ND mg/L 0 001 E200 8 05/09/24 23 47/eli-b <br /> Chromium ND mg/L 0 005 E200 8 05/09/24 23 47/eli-b <br /> Lead ND mg/L 0 001 E200 8 05/09/24 23 47/eli-b <br /> Manganese ND mg/L 0 001 E200 8 05/09/24 23 47/eli-b <br /> Molybdenum 0 087 mg/L 0 001 E200 8 05/09/24 23 47/eli-b <br /> Nickel ND mg/L 0 005 E200 8 05/09/24 23 47/eli-b <br /> Selenium 0 120 mg/L 0 001 E200 8 05/09/24 23 47/eli-b <br /> Uranium 0 998 mg/L 0 0003 E200 8 05/09/24 23 47/eli-b <br /> Vanadium 0 24 mg/L 0 01 E200 8 05/09/24 23 47/eli-b <br /> Zinc ND mg/L 0 01 E200 8 05/09/24 23 47/eli-b <br /> DATA QUALITY <br /> Solids,Total Dissolved-Calculated 487 mg/L 1 00 A1030 E 05/14/24 14 57/dmb <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 /> H-Analysis performed past the method holding time <br /> Page 4 of 28 <br />