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a Trust our People.Trust our Data. Billings,MT$00.735.4489•Casper,WY 888.235.0515 <br /> ' ®M www eneiyylab cnm 1 Gillette,WY 866.686.7175•Helene,MT 877.472,0711 <br /> LABORATORY ANALYTICAL REPORT <br /> Prepared by Casper,WY Branch <br /> Client: Energy Fuels Resources(USA) Inc Report Date: 08/13/21 <br /> ' Project: Whirlwind Mine-Water Collection Date: 07/13/21 10:30 <br /> Lab ID: C21070652-003 Date Received: 07/16/21 <br /> Client Sample ID: Bear Spring Matrix: Aqueous <br /> 1 MCL/ <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date/By <br /> ' MAJOR IONS <br /> Alkalinity,Total as CaCO3 245 mg/L 5 A2320 B 07/17/21 14:09/dmb <br /> Bicarbonate as HCO3 299 mg/L 5 A2320 B 07/17/21 14:09/dmb <br /> ' Chloride 14 mg/L 1 E300.0 07/20/21 23:08/dmb <br /> Fluoride 0.3 mg/L 0.1 A4500-F C 07/23/21 13:32/dmb <br /> Sulfate 36 mg/L 1 E300.0 07/20/21 23:08/dmb <br /> Calcium 88 mg/L 1 E200.7 07/19/21 16:43/meh <br /> ' Magnesium 9 mg/L 1 E200.7 07/19/21 16:43/meh <br /> Potassium 1 mg/L 1 E200.7 07/19/21 16:43/meh <br /> Sodium 19 mg/L 1 E200.7 07/19/21 16:43/meh <br /> ' INORGANICS <br /> Sulfide ND mg/L 1 A4500-S F 07/16/21 14:42/hat <br /> Sulfide as Hydrogen Sulfide(1-12S) ND mg/L 1 A4500-S F 07/16/21 14:42/hat <br /> ' PHYSICAL PROPERTIES <br /> pH 7.7 s.u. H 0.1 A4500-H B 07/16/21 16:47/pla <br /> pH Measurement Temp 18.2 °C A4500-H B 07/16/21 16:47/pla <br /> Solids,Total Dissolved TDS @ 180 C 335 mg/L 10 A2540 C 07/19/21 09:26/kjp <br /> Solids,Total Suspended TSS @ 105 C 6 mg/L 1 A2540 D 07/16/21 15:04/kjp <br /> NUTRIENTS <br /> ' Nitrogen, Nitrate as N 0.19 mg/L 0.01 E353.2 07/23/21 15:31 /tlf <br /> Nitrogen, Nitrite as N ND mg/L H 0.01 A4500-NO2 B 07/16/21 18:45/dmb <br /> Nitrogen, Nitrate+Nitrite as N 0.19 mg/L 0.01 E353.2 07/19/21 15:09/dmb <br /> Phosphorus,Total as P 0.015 mg/L 0.005 E365.1 07/20/21 11:47/dmb <br /> ' -H-sample was analyzed beyond recommended hold time due to receiving it with insufficient hold time remaining. <br /> METALS, DISSOLVED <br /> Arsenic 0.005 mg/L 0.001 E200.8 07/20/21 16:47/jcg <br /> ' Barium 0.10 mg/L 0.05 E200.7 07/19/21 16:43/meh <br /> Beryllium ND mg/L 0.001 E200.7 07/19/21 16:43/meh <br /> Boron ND mg/L 0.05 E200.7 07/19/21 16:43/meh <br /> ' Cadmium ND mg/L 0.001 E200.8 07/20/21 16:47/jcg <br /> Chromium ND mg/L 0.005 E200.8 07/20/21 16:47/jcg <br /> Lead ND mg/L 0.001 E200.8 07/20/21 16:47/jcg <br /> Manganese ND mg/L 0.001 E200.7 07/19/21 16:43/meh <br /> ' Molybdenum ND mg/L 0.001 E200.8 07/20/21 16:47/jcg <br /> Nickel ND mg/L 0.005 E200.8 07/20/21 16:47/jcg <br /> Selenium 0.002 mg/L 0.001 E200.8 07/21/21 17:14/meh <br /> Uranium 0.0014 mg/L 0.0003 E200.8 07/20/21 16:47/jcg <br /> Vanadium ND mg/L 0.01 E200.8 07/20/21 16:47/jcg <br /> Zinc ND mg/L 0.01 E200.8 07/20/21 16:47/jcg <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 7 of 31 <br />