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Trust our People_Trust our Data. Billings,MT 800.735.4489•Casper,WY 888.235.0515 <br /> 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: 07/11/17 <br /> Project: Whirlwind Mine Collection Date: 06/07/17 10:00 <br /> Lab ID: C17060348-001 Date Received: 06/09/17 <br /> Client Sample ID: DP Spring Matrix: Aqueous <br /> MCL/ <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date/By <br /> MAJOR IONS <br /> Alkalinity,Total as CaCC3 232 mg/L 5 A2320 B 06/12/17 14:41 /mvr <br /> Bicarbonate as HCO3 283 mg/L 5 A2320 B 06/12/17 14:41 /mvr <br /> Chloride 14 mg/L 1 E300 0 06/15/17 22.46/jcg <br /> Fluoride 0.3 mg/L 01 A4500-F C 06/12/17 09:02/mvr <br /> Sulfate 37 mg/L 1 E300.0 06/15/17 22.46/jcg <br /> Calcium 81 mg/L 1 E200.7 06/14/17 19 43/eli-b <br /> Magnesium 9 mg/L 1 E200.7 06/14/17 19:43/eli-b <br /> Potassium 1 mg/L 1 E200 7 06/14/17 19.43/eli-b <br /> Sodium 18 mg/L 1 E200.7 06/14/17 19.43/eli-b <br /> INORGANICS <br /> Sulfide 2 mg/L 1 A4500-S F 06/13/17 14.45/eli-b <br /> PHYSICAL PROPERTIES <br /> pH 7.77 s u. H 001 A4500-H B 06/12/17 09-53/mvr <br /> Solids,Total Dissolved TDS @ 180 C 323 mg/L 10 A2540 C 06/13/17 17.56/mvr <br /> Solids,Total Suspended TSS @ 105 C 12 mg/L 1 A2540 D 06/09/17 16-06/mvr <br /> Calcium, meq 4.04 meq/L 0.05 E200 7 06/14/17 19-43/eli-b <br /> Magnesium,meq 0.71 meq/L 008 E200.7 06/14/17 19.43/eli-b <br /> Sodium,meq 0.78 meq/L 004 E200 7 06/14/17 19:43/eli-b <br /> Sodium Adsorption Ratio(SAR) 05 unitless 01 USDA20B 06/14/17 19-43/sec <br /> NUTRIENTS <br /> Nitrogen, Nitrate as N 0.34 mg/L 0.01 E353 2 06/18/17 14:49/sec <br /> Nitrogen, Nitrite as N ND mg/L H 0.01 A4500-NO2 B 06/09/17 14 54/bah <br /> Nitrogen, Nitrate+Nitrite as N 034 mg/L 0.01 E353 2 06/13/17 17 05/Ijl <br /> Phosphorus,Total as P 0.013 mg/L 0 005 E365 1 06/14/17 14:55/eli-b <br /> -The sample was received past the EPA-recommended holding time for Nitrite <br /> METALS, DISSOLVED <br /> Arsenic 0 005 mg/L 0.001 E200 8 06/15/17 22.17/eli-b <br /> Barium ND mg/L 0.1 E200 7 06/14/17 19:43/eli-b <br /> Beryllium ND mg/L 001 E200.7 06/14/17 19.43/eli-b <br /> Boron ND mg/L 0.1 E200 7 06/14/17 19.43/eli-b <br /> Cadmium ND mg/L 0.01 E200.7 06/14/17 19:43/eli-b <br /> Chromium ND mg/L 005 E200.7 06/14/17 19.43/eli-b <br /> Lead ND mg/L 005 E200.7 06/14/17 19.43/eli-b <br /> Manganese ND mg/L 0.01 E200.7 06/14/17 19:43/eli-b <br /> Molybdenum ND mg/L 01 E200 7 06/14/17 19-43/eli-b <br /> Nickel ND mg/L 005 E200.7 06/14/17 19.43/eli-b <br /> Selenium 0.002 mg/L 0.001 E200 8 06/15/17 22:17/eli-b <br /> Uranium 0.0013 mg/L 0.0003 E200 8 06/15/17 22:17/eli-b <br /> Vanadium ND mg/L 01 E200.7 06/14/17 19-43/eli-b <br /> Zinc ND mg/L 0.01 E200.7 06/14/17 19:43/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 /> H-Analysis performed past recommended holding time <br /> Page 3 of 29 <br />