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ENERGY 0 Trust our People Trust our Data Billings.MT 406.252.6325•Casper WY 307.235.0515 <br /> LABORATORIES 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 10 50 <br /> Lab ID: C24050081-002 DateReceived: 05/02/24 <br /> Client Sample ID: MW-1 Matrix: Aqueous <br /> MCL/ <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date/By <br /> MAJOR IONS <br /> Alkalinity,Total as CaCO3 319 mg/L 5 A2320 B 05/07/24 13 34/slf <br /> Bicarbonate as HCO3 389 mg/L 6 A2320 B 05/07/24 13 34/slf <br /> Chloride 157 mg/L 1 E300 0 05/04/24 03 45/slf <br /> Fluoride 0 3 mg/L 0 1 A4500-F C 05/03/24 13 31 /slf <br /> Sulfate 205 mg/L 2 E300 0 05/04/24 03 45/slf <br /> Calcium 42 mg/L 1 E200 8 05/09/24 23 53/eli-b <br /> Magnesium 13 mg/L 1 E200 7 05/12/24 21 33/eli-b <br /> Potassium 13 mg/L 1 E200 8 05/09/24 23.53/eli-b <br /> Sodium 267 mg/L 1 E200,7 05/12/24 21 33/eli-b <br /> INORGANICS <br /> Sulfide 2 mg/L 1 A4500-S F 05/06/24 13 21 //Is1 <br /> Sulfide as Hydrogen Sulfide(H2S) 2 mg/L 1 A4500-S F 05/06/24 13 21 /ilsl <br /> PHYSICAL PROPERTIES <br /> ORP Measurement Temp 17 °C H A2580 B 05/08/24 15 25/eli-b <br /> Oxidation-Reduction Potential 258 mV H A2580 B 05/08/24 15 25/eli-b <br /> pH 7 7 s u H 0 1 A4500-H B 05/02/24 15 26/tlsi <br /> pH Measurement Temp 17 8 °C A4500-H B 05/02/24 15 26//Isi <br /> Solids,Total Dissolved TDS @ 180 C 909 mg/L 20 A2540 C 05/06/24 10 56//Is1 <br /> Solids,Total Suspended TSS @ 105 C 53 mg/L 4 A2540 D 05/07/24 09 55/ilsl <br /> NUTRIENTS <br /> Nitrogen, Nitrate as N ND 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//Is1 <br /> Nitrogen, Nitrate+Nitrite as N ND mg/L 0 05 E353 2 05/03/24 16 23/dmb <br /> Phosphorus,Total as P 0 13 mg/L 0 01 E365 1 05/08/24 11 00/dmb <br /> METALS,DISSOLVED <br /> Arsenic 0 020 mg/L 0 001 E200 8 05/09/24 23 53/eli-b <br /> Barium 0 07 mg/L 0 05 E200 8 05/09/24 23 53/eli-b <br /> Beryllium ND mg/L 0 001 E200 8 05/09/24 23 53/eli-b <br /> Boron 0 70 mg/L 0 06 E200 7 05/12/24 21 33/eli-b <br /> Cadmium ND mg/L 0 001 E200 8 05/09/24 23 53/eli-b <br /> Chromium ND mg/L 0 005 E200 8 05/09/24 23 53/eli-b <br /> Iron 0 20 mg/L 0 02 E200 8 05/09/24 23 53/eli-b <br /> Lead ND mg/L 0 001 E200 8 05/09/24 23 53/eli-b <br /> Manganese 0 028 mg/L 0 001 E200 8 05/09/24 23 53/eli-b <br /> Molybdenum 0 003 mg/L 0 001 E200 8 05/09/24 23 53/eli-b <br /> Nickel ND mg/L 0 005 E200 8 05/09/24 23 53/eli-b <br /> Selenium ND mg/L 0 001 E200 8 05/09/24 23 53/eli-b <br /> Uranium 0 229 mg/L 0 0003 E200 8 05/09/24 23•53/eli-b <br /> Vanadium ND mg/L 0 01 E200 8 05/09/24 23 53/eli-b <br /> Zinc ND mg/L 0 01 E200 8 05/09/24 23 53/eli-b <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 6 of 28 <br />