Contract analysis

I. Executive Summary This memorandum analyzes whether the $245.0 million financial assurance package established under the consent decree entered in United States of America and State of Montana v. Torchlight Mining Corp. et al., Civil Action No. 9:24-cv-00087-DWM, is adequate to cover Torchlight Mining Corp.'s ("TMC") remediation obligations at all four sites subject to the decree. In addition, this memorandum expla

II. Background — Consent Decree Financial Assurance Requirements A. Statutory and Regulatory Framework The financial assurance requirements applicable to TMC's remediation obligations arise under multiple federal environmental statutes and their implementing regulations, each of which imposes distinct requirements depending on the regulatory program under which the site is managed. We summarize the applicable framewo

1. Ridgecrest Copper-Molybdenum Mine (14200 Ridgecrest Mine Road, Drummond, Granite County, MT 59832). The Ridgecrest site is a former open-pit and underground copper-molybdenum mining operation that presents the most complex and costly remediation challenges among the four sites. Remediation activities include acid mine drainage treatment, tailings impoundment stabilization, contaminated groundwater extraction and t

2. Gallatin Chemical Works (8800 Industrial Park Lane, Belgrade, Gallatin County, MT 59714). The Gallatin site is a former chemical manufacturing facility requiring RCRA corrective action, including soil excavation and off-site disposal, groundwater pump-and-treat remediation, soil vapor extraction, and institutional controls. The remediation cost, per the Pinnacle Creek estimate accepted by the parties, is $42.8 mil

3. Bonanza Creek Gold Mine (County Road 447, Mile Marker 12, Lander County, NV 89820). The Bonanza Creek site is a former heap-leach gold mining operation requiring heap-leach pad closure, process solution neutralization and treatment, surface water and groundwater remediation, and revegetation. The remediation cost, per the Pinnacle Creek estimate, is $63.2 million over a 20-year remediation period, yielding an NPV

4. Kanawha Bend Chemical Plant (2200 Chemical Valley Road, Institute, Kanawha County, WV 25112). The Kanawha Bend site is a former specialty chemical manufacturing plant requiring RCRA corrective action, including soil and sediment remediation, groundwater treatment, off-site migration containment, and long-term monitoring. The remediation cost, per the Pinnacle Creek estimate, is $38.9 million over a 20-year remedia

III. Structure of the Current Financial Assurance Package A. Surety Bond — Ironbark Surety of America, Inc. The primary component of TMC's financial assurance package is a surety bond issued by Ironbark Surety of America, Inc. The material terms and characteristics of this bond are as follows: Bond Number: ISA-ENV-2025-08934 Face Amount: $165.0 million Issuer: Ironbark Surety of America, Inc., a New York-domiciled in

IV. Annual Adjustment Mechanism A. Overview of the Consent Decree Adjustment Provision The consent decree recognizes that a static financial assurance amount established at the time of decree entry will inevitably become inadequate over a multi-decade remediation period due to inflation, changes in remediation scope or technology, and evolving regulatory requirements. Accordingly, the decree mandates an annual review

V. Interaction with TMC's Broader Financial Obligations The consent decree's financial assurance requirements do not exist in isolation. TMC's ability to maintain and adjust its financial assurance package over time must be assessed in the context of TMC's broader financial obligations, credit agreements, accounting requirements, and insurance programs. We address each of these interactions below. A. Harborstone RCF

VI. Risk Factors and Contingencies TMC's financial assurance obligations are subject to several risk factors and contingencies that could affect the cost, availability, and adequacy of the financial assurance package over the multi-decade term of the consent decree. We identify and assess the principal risk factors below. A. Remedy Cost Escalation Risk The most significant risk factor affecting the adequacy of TMC's

VII. Compliance Procedures and Internal Controls Effective compliance with the consent decree's annual review and adjustment requirements demands disciplined internal procedures, clear allocation of responsibilities, and timely coordination among TMC's internal teams and external advisors. We recommend the following compliance procedures and internal controls. A. Annual Review Calendar To ensure that TMC is prepared

1. Annual Financial Assurance Adequacy Certification. A written certification, signed by the CFO (Carolyn Bracebridge) and the VP EHS (Gareth Linford), confirming that the financial assurance amount is adequate to cover the estimated remaining remediation obligations at all four sites. If an adjustment is required, the certification must specify the new required amount and the proposed allocation between the surety b

2. Updated Remediation Cost Estimates. Copies of the updated cost estimates prepared by Pinnacle Creek Environmental, with supporting methodological documentation and a narrative explanation of any significant changes from the prior year's estimates.

3. Ironbark Bond Endorsements or Riders. If the surety bond face amount is adjusted, copies of the bond rider or endorsement re