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Trust our People.Trust our Data. Billings,MT 406.252.6325•Casper.wy 307.235.0515 <br /> amm 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: C23070846-005 DateReceived: 07/26/23 <br /> Client Sample ID: Bear Spring Matrix: Aqueous <br /> MCU <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date/By <br /> MAJOR IONS <br /> Alkalinity,Total as CaCO3 242 mg/L 5 A2320 B 07/28/23 14.50/slf <br /> Bicarbonate as HCO3 296 mg/L 6 A2320 B 07/28/23 14.50/slf <br /> Chloride 14 mg/L 1 E300 0 07/29/23 00.13/slf <br /> Fluoride 0.3 mg/L 0.1 A4500-F C 08/08/23 12 44/dmb <br /> Sulfate 35 mg/L 1 E300 0 07/29/23 00:13/slf <br /> Calcium 95 mg/L 1 E200 7 07/31/23 18-43/eli-b <br /> Magnesium 10 mg/L 1 E200 7 07/31/23 18:43/eli-b <br /> Potassium 1 mg/L 1 E200 7 07/31/23 18:43/eli-b <br /> Sodium 20 mg/L 1 E200.7 07/31/23 18:43/eli-b <br /> INORGANICS <br /> Sulfide ND mg/L 1 A4500-S F 07/27/23 13 42/slf <br /> Sulfide as Hydrogen Sulfide(1-12S) ND mg/L 1 A4500-S F 07/27/23 13 42/slf <br /> PHYSICAL PROPERTIES <br /> pH 7.5 s.u. H 01 A4500-H B 07/26/23 16 04/tsa <br /> pH Measurement Temp 16.7 °C A4500-H B 07/26/23 16 04/tsa <br /> Solids,Total Dissolved TDS @ 180 C 331 mg/L 20 A2540 C 07/27/23 13 33/tsa <br /> Solids,Total Suspended TSS @ 105 C 15 mg/L 2 A2540 D 07/26/23 13 51 /tsa <br /> NUTRIENTS <br /> Nitrogen,Nitrate as N 020 mg/L 005 E353.2 08/11/23 11.33/dmb <br /> Nitrogen,Nitrite as N ND mg/L 001 A4500-NO2 B 07/26/23 16:33/slf <br /> Nitrogen,Nitrate+Nitrite as N 021 mg/L 005 E353.2 07/31/23 14:15/slf <br /> Phosphorus,Total as P 0 009 mg/L 0.005 E365.1 07/29/23 13:09/dmb <br /> METALS,DISSOLVED <br /> Arsenic 0 005 mg/L 0.001 E200 8 07/31/23 20:12/eli-b <br /> Barium 009 mg/L 005 E200 8 07/31/23 20:12/eli-b <br /> Beryllium ND mg/L 0.001 E200 7 07/31/23 18.43/eli-b <br /> Boron ND mg/L 005 E200.7 07/31/23 18:43/eli-b <br /> Cadmium ND mg/L 0 001 E200 8 07/31/23 20-12/eli-b <br /> Chromium ND mg/L 0 005 E200.8 07/31/23 20.12/eli-b <br /> Lead ND mg/L 0 001 E200.8 07/31/23 20:12/eli-b <br /> Manganese ND mg/L 0 001 E200.8 07/31/23 20:12/eli-b <br /> Molybdenum ND mg/L 0 001 E200.8 07/31/23 20.12/eli-b <br /> Nickel ND mg/L 0 005 E200.8 07/31/23 20:12/eli-b <br /> Selenium 0.002 mg/L 0 001 E200 8 08/02/23 01.22/eli-b <br /> Uranium 00012 mg/L 00003 E200.8 07/31/23 20:12/eli-b <br /> Vanadium ND mg/L 0.01 E200 8 08/02/23 01 22/eli-b <br /> Zinc ND mg/L 001 E200 8 07/31/23 20.12/eli-b <br /> DATA QUALITY <br /> Solids,Total Dissolved-Calculated 322 mg/L 1 00 A1030 E 08/11/23 11 24/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 12 of 36 <br />