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Trust our People.Trust our Data. M:_'Z� <br /> Billings,MT 800.735.4489•Casper,WY 888.235.0515 <br /> MUNIMwww.energylab.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: 09/01/22 <br /> Project: Not Indicated Collection Date: 08/01/22 10:15 <br /> Lab ID: C22080249-001 DateReceived: 08/04/22 <br /> Client Sample ID: PR Spring Matrix: Aqueous <br /> MCL/ <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date/By <br /> MAJORIONS <br /> Alkalinity,Total as CaCO3 317 mg/L 5 A2320 B 08/05/22 15:15/slf <br /> Bicarbonate as HCO3 387 mg/L 6 A2320 B 08/05/22 15:15/slf <br /> Chloride 19 mg/L 1 E300.0 08/08/22 23:03/dmb <br /> Fluoride 0.4 mg/L 0.1 A4500-F C 08/05/22 12:10/sIf <br /> Sulfate 102 mg/L 1 E300.0 08/08/22 23:03/dmb <br /> Calcium 29 mg/L 1 E200.7 08/12/22 18:31 /eli-b <br /> Magnesium 14 mg/L 1 E200.7 08/12/22 18:31 /eli-b <br /> Potassium 5 mg/L 1 E200.7 08/12/22 18:31 /eli-b <br /> Sodium 147 mg/L 1 E200.7 08/12/22 18.31 /eli-b <br /> INORGANICS <br /> Sulfide ND mg/L 1 A4500-S F 08/05/22 14:39/erc <br /> Sulfide as Hydrogen Sulfide(H2S) ND mg/L 1 A4500-S F 08/05/22 14:39/erc <br /> PHYSICAL PROPERTIES <br /> pH 8.2 s.u. H 0.1 A4500-H B 08/05/22 11.23/mnm <br /> pH Measurement Temp 18.3 °C A4500-H B 08/05/22 11:23/mnm <br /> Solids,Total Dissolved TDS @ 180 C 525 mg/L 20 A2540 C 08/05/22 12:31 /sif <br /> Solids,Total Suspended TSS @ 105 C ND mg/L 1 A2540 D 08/08/22 12:37/mnm <br /> NUTRIENTS <br /> Nitrogen, Nitrate as N 0.25 mg/L 0.05 E353.2 08/10/22 08:25/tlf <br /> Nitrogen, Nitrite as N ND mg/L H 0.01 A4500-NO2 B 08/05/22 14.12/erc <br /> Nitrogen, Nitrate+Nitrite as N 0.25 mg/L 0.05 E353.2 08/05/22 15:04/erc <br /> Phosphorus,Total as P 0.021 mg/L 0.005 E365.1 08/13/22 10:48/dmb <br /> -H-sample was analyzed beyond recommended hold time due to receiving it with insufficient hold time remaining. <br /> METALS, DISSOLVED <br /> Arsenic 0.359 mg/L 0.001 E200.8 08/13/22 21:56/eli-b <br /> Barium ND mg/L 0.05 E200.7 08/12/22 18:31 /eli-b <br /> Beryllium ND mg/L 0.001 E200.8 08/18/22 13:23/eli-b <br /> Boron 0.11 mg/L 0.05 E200.7 08/12/22 18-31 /eli-b <br /> Cadmium ND mg/L 0.001 E200.8 08/13/22 21,56/eli-b <br /> Chromium ND mg/L 0.005 E200.8 08/13/22 21:56/eli-b <br /> Lead ND mg/L 0.001 E200.8 08/13/22 21:56/eli-b <br /> Manganese ND mg/L 0.001 E200.8 08/13/22 21.56/eli-b <br /> Molybdenum 0.091 mg/L 0.001 E200.8 08/13/22 21:56/eli-b <br /> Nickel ND mg/L 0.005 E200.8 08/13/22 21:56/eli-b <br /> Selenium 0.140 mg/L 0.001 E200.8 08/13/22 21:56/eli-b <br /> Uranium 1.13 mg/L 0.0003 E200.8 08/20/22 17:44/eli-b <br /> Vanadium 0.28 mg/L 0.01 E200.8 08/16/22 13:45/eli-b <br /> Zinc ND mg/L 0.01 E200.8 08/13/22 21:56/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(RL) <br /> H-Analysis performed past the method holding time <br /> Page 3 of 32 <br />