2022-10-20_HYDROLOGY - M2007044 (7)

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�® Trust our People.Trust our Data. i Billings,MT800.735.4489•Casper,WY888.235.0515 www.energylab.com <>" Gillette,WY 866.686.7175•Helena,MT 877.472.0711 LABORATORY ANALYTICAL REPORT Prepared by Casper,WY Branch Client: Energy Fuels Resources(USA) Inc Report Date: 09/01/22 Project: Not Indicated Collection Date: 08/01/22 09:30 Lab ID: C22080249-003 DateReceived: 08/04/22 Client Sample ID: MW Matrix: Aqueous MCL/ Analyses Result Units Qualifiers RL QCL Method Analysis Date/By MAJOR IONS Alkalinity,Total as CaCO3 320 mg/L 5 A2320 B 08/05/22 15:47/slf Bicarbonate as HCO3 391 mg/L 6 A2320 B 08/05/22 15:47/slf Chloride 169 mg/L 1 E300.0 08/08/22 23:42/dmb Fluoride 0.3 mg/L 0.1 A4500-F C 08/05/22 12.16/slf Sulfate 211 mg/L D 2 E300.0 08/08/22 23:42/dmb Calcium 43 mg/L 1 E200.7 08/12/22 18:40/eli-b Magnesium 13 mg/L 1 E200.7 08/12/22 18,40/eli-b Potassium 13 mg/L 1 E200.7 08/12/22 18:40/eli-b Sodium 273 mg/L 1 E200.7 08/12/22 18:40/eli-b INORGANICS Sulfide ND mg/L 1 A4500-S F 08/05/22 14:39/ere Sulfide as Hydrogen Sulfide(H2S) ND mg/L 1 A4500-S F 08/05/22 14:39/ere PHYSICAL PROPERTIES pH 7.8 s.u. H 0.1 A4500-H B 08/05/22 11.29/mnm pH Measurement Temp 18.4 °C A4500-H B 08/05/22 11:29/mnm Solids,Total Dissolved TDS @ 180 C 939 mg/L 20 A2540 C 08/05/22 12:32/slf Solids,Total Suspended TSS @ 105 C 110 mg/L D 3 A2540 D 08/08/22 12,37/mnm NUTRIENTS Nitrogen, Nitrate as N ND mg/L 0.05 E353.2 08/10/22 08:25/Of Nitrogen,Nitrite as N ND mg/L H 0.01 A4500-NO2 B 08/05/22 14:12/ere Nitrogen,Nitrate+Nitrite as N ND mg/L 0.05 E353.2 08/05/22 15:07/ere Phosphorus,Total as P 0.059 mg/L 0.005 E365.1 08/13/22 10:50/dmb -H-sample was analyzed beyond recommended hold time due to receiving it with insufficient hold time remaining. METALS, DISSOLVED Arsenic 0.022 mg/L 0.001 E200.8 08/13/22 22:09/ell-b Barium ND mg/L 0.05 E200.8 08/13/22 22:09/eli-b Beryllium ND mg/L 0.001 E200.8 08/18/22 13:36/eli-b Boron 0.7 mg/L D 0.1 E200.7 08/12/22 18:40/eli-b Cadmium ND mg/L 0.001 E200.8 08/13/22 22:09/eli-b Chromium ND mg/L 0.005 E200.8 08/13/22 22:09/eli-b Lead ND mg/L 0.001 E200.8 08/13/22 22.09/eli-b Manganese 0.015 mg/L 0.001 E200.8 08/13/22 22.09/eli-b Molybdenum 0.002 mg/L 0.001 E200.8 08/13/22 22:09/eli-b Nickel ND mg/L 0.005 E200.8 08/13/22 22:09/eli-b Selenium ND mg/L 0.001 E200.8 08/13/22 22:09/eli-b Uranium 0.228 mg/L 0.0003 E200.8 08/13/22 22:09/eli-b Vanadium ND mg/L 0.01 E200.8 08/16/22 14:10/eli-b Zinc ND mg/L 0.01 E200.8 08/13/22 22-09/eli-b Report RL-Analyte Reporting Limit MCL-Maximum Contaminant Level Definitions: QCL-Quality Control Limit ND-Not detected at the Reporting Limit(RL) D-Reporting Limit(RL)increased due to sample matrix H-Analysis performed past the method holding time Page 7 of 32