2024-04-30_HYDROLOGY - M2007044

• Permit No: M2007044
• IBM Index Class Name: Hydrology
• Doc Date: 4/30/2024
• Doc Name: Hydrology Report
• From: Energy Fuels Resources Inc.
• To: DRMS
• Annual Report Year: 2024
• Report Quarter_Month: 1
• Email Name: ACY
• Email Name: THM
• Media Type: D
• Archive: No

�/' aceAnalyticcal• Pace Analytical
i'a 1673 Terra Avenue Sheridan,WY 82801 ph:[phone]
Sample Analysis Report
CLIENT: Energy Fuels Resources (USA) Inc. Date Reported: 4/5/2024
225 Union Blvd. Suite 600 Report ID: S2403321001
Lakewood,CO 80228
Work Order: S2403321
Collection Date: 3/21/2024 4:00:00 PM
Project: Whirlwind Waste Rock-SPLP Date Received: 3/21/2024 3:26:00 PM
Lab ID: S2403321-001 Sampler:
Client Sample ID: S2402263 Matrix: Water
COC: 202468
Analyses Result RL Qual Units Date Analyzed/Init Method
General Parameters
pH 9.71 0.10 s.u. 03/22/2024 20:45 JEJ SM 4500 H B
Electrical Conductivity 402 5 pmhos/cm 03/22/2024 20:45 JEJ SM 2510B
Total Dissolved Solids(180) 910 10.0 mg/L 03/26/2024 12:48 SKR SM 2540
Alkalinity,Total(As CaCO3) 152 5.00 mg/L 03/22/2024 20:45 JEJ SM 2320B
Hardness,Calcium/Magnesium(As CaCO3) 86.3 1.0 mg/L 04/05/2024 11:14 JKG SM 2340B
Nitrogen,Nitrate(As N) 1.65 0.0500 mg/L 03/22/2024 18:52 BS EPA 300.0
Nitrogen,Nitrite(As N) ND 0.0500 mg/L 03/22/2024 18:52 BS EPA 300.0
Silica as Si02 48.7 0.200 mg/L 03/26/2024 13:07 DG EPA 200.7
Uranium 2.17 0.200 piC/L 04/05/2024 15:14 JKG Calculation
Anions
Alkalinity,Bicarbonate as HCO3 101 5.00 mg/L 03/22/2024 20:45 JEJ SM 2320B
Chloride 22.8 1.00 mg/L 03/25/2024 18:41 BS EPA 300.0
Fluoride 0.418 0.100 mg/L 03/22/2024 20:45 JEJ SM 4500FC
Nitrate+Nitrite as N 1.66 0.0500 mg/L 03/22/2024 18:52 BS EPA 300.0
Sulfate 6.38 1.00 mg/L 03/22/2024 18:52 BS EPA 300.0
Cations
Calcium 9.58 1.00 mg/L 03/25/2024 16:16 DG EPA 200.7
Magnesium 15.2 1.00 mg/L 03/25/2024 16:16 DG EPA 200.7
Potassium 25.6 1.00 mg/L 03/25/2024 16:16 DG EPA 200.7
Sodium 88.6 2.00 mg/L 03/25/2024 16:16 DG EPA 200.7
Dissolved Metals
Aluminum 61.9 0.100 mg/L 03/25/2024 16:16 DG EPA 200.7
Antimony ND 0.00500 mg/L 03/25/2024 20:46 MS EPA 200.8
Arsenic 0.0190 0.00500 mg/L 03/25/2024 20:46 MS EPA 200.8
Barium ND 0.100 mg/L 03/25/2024 20:46 MS EPA 200.8
Beryllium ND 0.00200 mg/L 03/25/2024 16:16 DG EPA 200.7
Boron 0.540 0.100 mg/L 03/25/2024 16:16 DG EPA 200.7
Cadmium ND 0.00100 mg/L 03/25/2024 20:46 MS EPA 200.8
Chromium 0.0196 0.0100 mg/L 03/25/2024 16:16 DG EPA 200.7
Copper ND 0.0100 mg/L 03/25/2024 20:46 MS EPA 200.8
Iron 21.1 0.100 mg/L 03/25/2024 16:16 DG EPA 200.7
Lead 0.00137 0.00100 mg/L 03/25/2024 20:46 MS EPA 200.8
Manganese 0.0718 0.0200 mg/L 03/25/2024 16:16 DG EPA 200.7
Mercury ND 0.00100 mg/L 04/02/2024 16:26 JGU EPA 245.1
Molybdenum ND 0.0200 mg/L 03/25/2024 20:46 MS EPA 200.8
Nickel 0.0406 0.0100 mg/L 03/25/2024 16:16 DG EPA 200.7
Selenium 0.0151 0.00500 mg/L 03/25/2024 20:46 MS EPA 200.8
Silver ND 0.00300 mg/L 03/25/2024 20:46 MS EPA 200.8
Thallium ND 0.00100 mg/L 03/25/2024 20:46 MS EPA 200.8
Uranium 0.00323 0.000300 mg/L 03/25/2024 20:46 MS EPA 200.8
Vanadium 0.0397 0.0200 mg/L 03/25/2024 20:46 MS EPA 200.8
Zinc 0.0628 0.0200 mg/L 03/25/2024 16:16 DG EPA 200.7
These results apply only to the samples tested.
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