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Trust our People Trust our Data. Billings,MT 406.252.6325•Casper,wY 307.235.0515 <br /> Gillette,wy 307.686.7175•Helena.MT 406.442.0711 <br /> LABORATORY ANALYTICAL REPORT <br /> Prepared by Casper,WY Branch <br /> Client: Energy Fuels Resources(USA) Inc Report Date: 08/29/23 <br /> Project: Whirlwind(Annual) Collection Date: 07/25/23 10-25 <br /> Lab ID: C23070846-004 DateReceived: 07/26/23 <br /> Client Sample ID: Rajah Spring Matrix: Aqueous <br /> MCU <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date/By <br /> MAJOR IONS <br /> Alkalinity,Total as CaCO3 356 mg/L 5 A2320 B 07/28/23 14-42/sif <br /> Bicarbonate as HCO3 411 mg/L 6 A2320 B 07/28/23 14-42!sif <br /> Chloride 23 mg/L 1 E300 0 07/28/23 23:56/slf <br /> Fluoride 0.3 mg/L 0.1 A4500-F C 08/08/23 12-42/dmb <br /> Sulfate 91 mg/L 1 E300 0 07/28/23 23.56/sif <br /> Calcium 8 mg/L 1 E200 7 07/31/23 18:39/eii-b <br /> Magnesium 3 mg/L 1 E200 7 07/31/23 18:39/eii-b <br /> Potassium 6 mg/L 1 E200 7 07/31/23 1839/eii-b <br /> Sodium 212 mg/L 1 E200 7 07/31/23 18:39/eli-b <br /> INORGANICS <br /> Sulfide 1 mg/L 1 A4500-S F 07/27/23 13:42/sif <br /> Sulfide as Hydrogen Sulfide(H2S) 2 mg/L 1 A4500-S F 07/27/23 13-42/slf <br /> PHYSICAL PROPERTIES <br /> pH 86 s u H 01 A4500-H B 07/26/23 16-01/tsa <br /> pH Measurement Temp 16.2 °C A4500-H B 07/26/23 16:01 /tsa <br /> Solids,Total Dissolved TDS @ 180 C 625 mg/L 20 A2540 C 07/27/23 13:32/tsa <br /> Solids,Total Suspended TSS @ 105 C 16 mg/L 2 A2540 D 07/26/23 13:51 /tsa <br /> NUTRIENTS <br /> Nitrogen,Nitrate as N 0.32 mg/L 0.05 E353.2 08/11/23 11.33/dmb <br /> Nitrogen,Nitrite as N ND mg/L 0.01 A4500-NO2 B 07/26/23 16:33/sif <br /> Nitrogen,Nitrate+Nitrite as N 033 mg/L 0.05 E353 2 07/31/23 14.14/sif <br /> Phosphorus,Total as P 0.072 mg/L 0 005 E365.1 07/29/23 13:08/dmb <br /> METALS,DISSOLVED <br /> Arsenic 1.82 mg/L 0.001 E200 8 08/02/23 01:09/eli-b <br /> Barium 0.06 mg/L 0.05 E200 8 07/31/23 20:06/eli-b <br /> Beryllium ND mg/L 0 001 E200 7 07/31/23 18:39/eli-b <br /> Boron 0.13 mg/L 0.05 E200.7 08/01/2315-21/eli-b <br /> Cadmium ND mg/L 0.001 E200 8 07/31/23 20:06/eli-b <br /> Chromium ND mg/L 0.005 E200 8 08/02/23 01:09/eli-b <br /> Lead 0 001 mg/L 0 001 E200 8 07/31/23 20:06/eli-b <br /> Manganese 0.019 mg/L 0.001 E200.8 08/02/23 01:16/eli-b <br /> Molybdenum 0 215 mg/L 0.001 E200 8 07/31/23 20:06/eli-b <br /> Nickel ND mg/L 0 005 E200.8 08/02/23 01:09/eli-b <br /> Selenium 0.179 mg/L 0 001 E200 8 08/02/23 01:09/eli-b <br /> Uranium 1 79 mg/L 0.0003 E200 8 08/02/23 01:09/eli-b <br /> Vanadium 0.32 mg/L 001 E200.8 08/02/23 01:16/eli-b <br /> Zinc ND mg/L 0.01 E200 7 07/31/23 18:39/eli-b <br /> DATA QUALITY <br /> Solids,Total Dissolved-Calculated 559 mg/L 1 00 Al030 E 08/11/23 11:23/dmb <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 10 of 36 <br />