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10Trust our People.Trust our Data. Billings,MT 800.735.4489•Casper,WY 888.235.0515 <br /> " www.energy[ab.com Gillette,WY 866.686.7175•Helena,MT 877.472.0711 <br /> LABORATORY ANALYTICAL REPORT <br /> Prepared by Casper, WY Branch <br /> Client: Energy Fuels Resources(USA) Inc Report Date: 08/06/19 <br /> Project: Whirlwind Mine Collection Date: 06/25/19 09:40 <br /> Lab ID: C19060940-003 DateReceived: 06/27/19 <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 316 mg/L 5 A2320 B 07/02/19 16:53/dmb <br /> Bicarbonate as HCO3 386 mg/L 5 A2320 B 07/02/19 16:53/dmb <br /> Chloride 171 mg/L 1 E300.0 07/02/19 01:14/Ijl <br /> Fluoride 0.3 mg/L 0.1 A4500-F C 07/02/19 12:33/dmb <br /> Sulfate 219 mg/L D 2 E300.0 07/02/19 01:14/Ijl <br /> Calcium 45 mg/L 1 E200.7 07/01/19 23:58/eli-b <br /> Magnesium 13 mg/L 1 E200.7 07/01/19 23:58/eli-b <br /> Potassium 13 mg/L 1 E200.7 07/01/19 23:58/eli-b <br /> Sodium 279 mg/L 1 E200.7 07/01/19 23:58/eli-b <br /> INORGANICS <br /> Sulfide ND mg/L 1 A4500-S F 07/01/19 15:35/eli-b <br /> PHYSICAL PROPERTIES <br /> pH 7.67 s.u. H 0.01 A4500-H B 06/27/19 15:42/adw <br /> pH Measurement Temp 21 °C A4500-H B 06/27/19 15:42/adw <br /> Solids,Total Dissolved TDS @ 180 C 939 mg/L 10 A2540 C 06/27/19 17:17/adw <br /> Solids,Total Suspended TSS @ 105 C 18 mg/L 1 A2540 D 07/01/19 09:39/adw <br /> Calcium, meq 2.24 meq/L 0.05 E200.7 07/01/19 23:58/eli-b <br /> Magnesium, meq 1.07 meq/L 0.08 E200.7 07/01/19 23:58/eli-b <br /> Sodium, meq 12.1 meq/L 0.04 E200.7 07/01/19 23:58/eli-b <br /> Sodium Adsorption Ratio(SAR) 9.4 unitless 0.1 USDA20B 07/01/19 23:58/may <br /> NUTRIENTS <br /> Nitrogen, Nitrate as N 0.09 mg/L 0.01 E353.2 07/03/19 11:50/sec <br /> Nitrogen, Nitrite as N ND mg/L H 0.01 A4500-NO2 B 06/27/19 15:31 /kjp <br /> Nitrogen, Nitrate+Nitrite as N 0.09 mg/L 0.01 E353.2 07/01/19 16:00/dmb <br /> Phosphorus,Total as P 0.034 mg/L 0.005 E365.1 07/03/19 11:43/dmb <br /> -H-sample was analyzed beyond recommended hold time due to receiving it with insufficient hold time remaining. <br /> METALS, DISSOLVED <br /> Arsenic 0.023 mg/L 0.001 E200.8 07/05/19 01:27/eli-b <br /> Barium ND mg/L 0.1 E200.7 07/01/19 23:58/eli-b <br /> Beryllium ND mg/L 0.01 E200.7 07/01/19 23:58/eli-b <br /> Boron 0.7 mg/L 0.1 E200.7 07/01/19 23:58/eli-b <br /> Cadmium ND mg/L 0.01 E200.7 07/01/19 23:58/eli-b <br /> Chromium ND mg/L 0.05 E200.7 07/01/19 23:58/eli-b <br /> Lead ND mg/L 0.05 E200.8 07/11/19 07:37/eli-b <br /> Manganese 0.03 mg/L 0.01 E200.7 07/01/19 23:58/eli-b <br /> Molybdenum ND mg/L 0.1 E200.7 07/01/19 23:58/eli-b <br /> Nickel ND mg/L 0.05 E200.7 07/01/19 23:58/eli-b <br /> Selenium ND mg/L 0.001 E200.8 07/09/19 19:50/eli-b <br /> Uranium 0.221 mg/L 0.0003 E200.8 07/05/19 01:27/eli-b <br /> Vanadium ND mg/L 0.1 E200.7 07/01/19 23:58/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. <br /> D-RL increased due to sample matrix. H-Analysis performed past recommended holding time. <br /> Page 7 of 35 <br />