Annual report [Section 13 and 15(d), not S-K Item 405]

Asset Retirement Obligations

v3.25.4
Asset Retirement Obligations
12 Months Ended
Dec. 31, 2025
Asset Retirement Obligations  
Asset Retirement Obligations

17.

Asset Retirement Obligations

Asset retirement obligations (“ARO”) relate to Lost Creek and Shirley Basin and are equal to the current estimated reclamation cost escalated at inflation rates ranging from 0.74% to 5.20% and then discounted at credit adjusted risk-free rates ranging from 0.33% to 9.61%. Current estimated reclamation costs include costs of closure, reclamation, demolition and stabilization of the well fields, processing plants, infrastructure, aquifer restoration, waste dumps, and ongoing post-closure environmental monitoring and maintenance costs. The schedule of payments required to settle the future reclamation extends through 2040.

The present value of the estimated future closure estimate is presented in the following table.

Asset Retirement Obligation Activity

Total

December 31, 2023

31,236

Change in estimated asset retirement costs

4,861

Accretion expense

760

December 31, 2024

36,857

Change in estimated asset retirement costs

6,372

Accretion expense

1,245

December 31, 2025

44,474

The restricted cash discussed in note 8 relates to the surety bonds provided to the governmental agencies for these and other reclamation obligations.