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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: 09/26/23 <br /> Project: Whirlwind Seeps&Spring Survey Collection Date: 08/29/23 10 55 <br /> Lab ID: C23081241-001 DateReceived: 08/30/23 <br /> Client Sample ID: Lumsden Creek DIN Matrix: Aqueous <br /> MCL/ <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date/By <br /> MAJOR IONS <br /> Alkalinity,Total as CaCO3 185 mg/L 5 A2320 B 09/02/23 11:38/dmb <br /> Bicarbonate as HCO3 222 mg/L 6 A2320 B 09/02/23 11-38/dmb <br /> Chloride 15 mg/L 1 E300 0 09/04/23 13.32/dmb <br /> Fluoride 0.3 mg/L 01 A4500-F C 09/06/23 1234/dmb <br /> Sulfate 37 mg/L 1 E300 0 09/04/23 13 32/dmb <br /> Calcium 68 mg/L 1 E200.7 09/16/23 12 36/eli-b <br /> Magnesium 10 mg/L 1 E200 7 09/16/23 12:36/eli-b <br /> Potassium 2 mg/L 1 E200 7 09/16/23 12 36/eli-b <br /> Sodium 20 mg/L 1 E200.7 09/16/23 12-36/eli-b <br /> INORGANICS <br /> Sulfide ND mg/L 1 A4500-S F 08/31/23 10-13/slf <br /> Sulfide as Hydrogen Sulfide(H2S) ND mg/L 1 A4500-S F 08/31/23 10 13/slf <br /> PHYSICAL PROPERTIES <br /> pH 8.4 s.u. H 0.1 A4500-H B 08/30/23 17:01/jlsl <br /> pH Measurement Temp 172 °C A4500-H B 08/30/23 17:01/jlsl <br /> Solids,Total Dissolved TDS @ 180 C 274 mg/L 20 A2540 C 08/31/23 12-23/jlsl <br /> NUTRIENTS <br /> Nitrogen,Nitrate as N ND mg/L 005 E353.2 09/17/23 10:34/dmb <br /> Nitrogen,Nitrite as N 002 mg/L 0.01 A4500-NO2 B 08/30/23 16:25/slf <br /> Nitrogen,Nitrate+Nitrite as N ND mg/L 0.05 E353.2 09/05/23 14:42/slf <br /> Phosphorus,Total as P 0.043 mg/L 0 005 E365.1 09/06/23 15:32/slf <br /> METALS,DISSOLVED <br /> Arsenic 0.007 mg/L 0.001 E200.8 09/06/23 15:41/eli-b <br /> Barium 0.12 mg/L 0.05 E200.8 09/06/23 15:41/eli-b <br /> Beryllium ND mg/L 0 001 E200.8 09/06/23 15:41/eli-b <br /> Boron ND mg/L 0.05 E200.7 09/16/23 12:36/eli-b <br /> Cadmium ND mg/L 0 001 E200.8 09/06/23 15:41 /eli-b <br /> Chromium ND mg/L 0 005 E200.8 09/06/23 15:41 /eli-b <br /> Lead ND mg/L 0.001 E200.8 09/06/23 15:41 /eli-b <br /> Manganese 0.021 mg/L 0 001 E200.8 09/06/23 15:41 /eli-b <br /> Molybdenum ND mg/L 0 001 E200.8 09/06/23 15:41 /eli-b <br /> Nickel ND mg/L 0 005 E200 8 09/06/23 15:41 /eli-b <br /> Selenium 0.001 mg/L 0 001 E200.8 09/06/23 15.41/eli-b <br /> Uranium 0,0039 mg/L 0.0003 E200.8 09/06/23 15-41 /eli-b <br /> Vanadium ND mg/L 0.01 E200 8 09/06/23 15-41 /eli-b <br /> Zinc ND mg/L 0.01 E200.8 09/06/23 15.41 /eli-b <br /> DATA QUALITY <br /> Solids,Total Dissolved-Calculated 265 mg/L 1.00 A1030 E 09/25/23 13 20/dmb <br /> A/C Balance 278 % A1030 E 09/25/23 13 20/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 3 of 20 <br />