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Trust our People Trust our Data. Billings,MT 406.252.6325•Casper.WY 307.235.0515 <br /> BMWE 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: 08/29/23 <br /> Project: Whirlwind(Annual) Collection Date: 07/25/23 11-25 <br /> Lab ID: C23070846-001 DateReceived: 07/26/23 <br /> Client Sample ID: DP Spring Matrix: Aqueous <br /> MCU <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date/By <br /> MAJOR IONS <br /> Alkalinity,Total as CaCO3 243 mg/L 5 A2320 B 07/28/23 14 18/slf <br /> Bicarbonate as HCO3 296 mg/L 6 A2320 B 07/28/23 14-18/slf <br /> Chloride 14 mg/L 1 E300.0 07/28/23 21-52/slf <br /> Fluoride 0.3 mg/L 0.1 A4500-F C 08/08/23 12.33/dmb <br /> Sulfate 36 mg/L 1 E300.0 07/28/23 21:52/slf <br /> Calcium 94 mg/L 1 E200.7 07/31/23 18:18/eli-b <br /> Magnesium 10 mg/L 1 E200.7 07/31/23 18:18/eh-b <br /> Potassium 1 mg/L 1 E200.7 07/31/23 18:18/eh-b <br /> Sodium 20 mg/L 1 E200 7 07/31/23 18-18/eh-b <br /> INORGANICS <br /> Sulfide 1 mg/L 1 A4500-S F 07/27/23 13:42/slf <br /> Sulfide as Hydrogen Sulfide(H2S) 2 mg/L 1 A4500-S F 07/27/23 13:42/slf <br /> PHYSICAL PROPERTIES <br /> pH 7.5 s.u. H 0.1 A4500-H B 07/26/23 15-47/tsa <br /> pH Measurement Temp 15.0 °C A4500-H B 07/26/23 15-47/tsa <br /> Solids,Total Dissolved TDS @ 180 C 338 mg/L 20 A2540 C 07/27/23 13:32/tsa <br /> Solids,Total Suspended TSS @ 105 C 14 mg/L 3 A2540 D 07/26/23 13:47/tsa <br /> NUTRIENTS <br /> Nitrogen,Nitrate as N 021 mg/L 0.05 E353.2 08/11/23 11.33/dmb <br /> Nitrogen,Nitrite as N ND mg/L 0.01 A4500-NO2 B 07/26/23 16.33/slf <br /> Nitrogen,Nitrate+Nitrite as N 0.21 mg/L 0.05 E353.2 07/31/23 14:11/slf <br /> Phosphorus,Total as P 0 011 mg/L 0.005 E365.1 07/29/23 13-04/dmb <br /> METALS,DISSOLVED <br /> Arsenic 0.005 mg/L 0.001 E200.8 07/31/23 1936/eli-b <br /> Barium 0.09 mg/L 005 E200 8 07/31/23 19.36/eli-b <br /> Beryllium ND mg/L 0.001 E200 7 07/31/23 18:18/eli-b <br /> Boron ND mg/L 0.05 E200.7 07/31/23 18.18/eli-b <br /> Cadmium ND mg/L 0.001 E200.8 07/31/23 19:36/eh-b <br /> Chromium ND mg/L 0.005 E200.8 07/31/23 19:36/eli-b <br /> Lead ND mg/L 0.001 E200 8 07/31/23 19:36/eli-b <br /> Manganese ND mg/L 0 001 E200 8 07/31/23 19:36/eli-b <br /> Molybdenum ND mg/L 0.001 E200.8 07/31/23 19:36/eli-b <br /> Nickel ND mg/L 0 005 E200 8 07/31/23 19:36/eli-b <br /> Selenium 0 002 mg/L 0.001 E200.8 08/02/23 00:38/eli-b <br /> Uranium 0.0011 mg/L 00003 E200.8 07/31/23 1936/eli-b <br /> Vanadium ND mg/L 0 01 E200.8 08/03/23 14:08/eli-b <br /> Zinc ND mg/L 0.01 E200.8 07/31/23 19 36/eli-b <br /> DATA QUALITY <br /> Solids,Total Dissolved-Calculated 323 mg/L 1.00 A1030 E 08/11/23 11:22/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 36 <br />