The RML allows the construction of wellfields and a Satellite Ion Exchange (“IX”) Plant to commence, which will feed the Rosita ISR Uranium Central Processing Plant (“CPP”). These Satellite IX Plants, located adjacent to wellfields, are a key part of the satellite ISR process; they are modular, efficient, and relocatable, allowing for cost-effective uranium extraction across multiple remote sites which can be moved once a wellfield is depleted. The RML is scheduled for renewal in 2032, provided the Project’s operation remains in compliance. The RML provides safety, material handling, record keeping and reporting protocols.
William M. Sheriff, Executive Chairman of enCore Energy stated: “The receipt of the RML, allowing enCore to build its next remote Satellite Ion Exchange Plant and wellfield in a timely manner from application, is a testament to the efficiency of the Texas Commission on Environmental Quality. The ability to operate and issue these critical permits under authority of being an Agreement State in conjunction with the U.S. Nuclear Regulatory Commission is a clear competitive advantage for enCore. This is our third permitted facility in Texas with each of our preceding permits having been granted in 20 months or less. The Upper Spring Creek Project brings important uranium mineralization into the operations of the Company, and we look forward to recovering (capturing) increasing amounts of uranium from late this year into 2026. On behalf of the Board, I want to thank our dedicated team for bringing this project to the point of permit application and issuance. We have the utmost confidence in them completing the new construction in the coming months.”
enCore has commenced advancement of the Project with drill rigs moving to site to begin development of the production wellfield; enCore previously began staging equipment in anticipation of receiving this approval. Construction activities will include surface preparation, well construction, road construction and installation of support facilities and utilities. The construction of the Satellite IX Plant concrete pad is planned to start in 30 days.
enCore now holds two RML’s in Texas; one for the Alta Mesa ISR Uranium Project and the amended RML which now includes the Upper Spring Creek’s Brown Area, Rosita and Kingsville Project areas. The TCEQ is a part of the United States Nuclear Regulatory Commission’s (“NRC”) Agreement State Program where Texas assumes regulatory authority over certain radioactive materials, including production of uranium. As part of the agreement, regulations adopted by Texas are required to be compatible with NRC regulations.
About the Upper Spring Creek ISR Uranium Project
The 100% Company-owned Project is a planned Satellite IX Plant operation for the Rosita CPP. The Project consists of several future potential production units within the historic Clay West uranium district. The Project was previously held by Signal Equities LLC, who previously licensed and permitted the property as an ISR uranium project, maintaining the aquifer exemption and ceased work following continued low uranium spot prices. In December 2020, the Company acquired the Project.
The uranium mineralized sands that are associated with the project area lie within the Oakville Formation. These historic uranium producing sands stretch across an area of approximately 120 miles long by approximately 20 miles wide in South Texas. The uranium mineralized ore body at the Upper Spring Creek Project occurs at depths typically between 300 and 450 feet from surface.
Rosita ISR Uranium Central Processing Plant
The Rosita CPP can receive uranium-loaded resin from remote project areas across the South Texas region through a network of Satellite IX Plants. These Satellite IX Plants, located near wellfields, are a key component of the ISR uranium extraction process.
The uranium-loaded resin is then transported to the Rosita CPP, where the uranium is removed from the resin and processed into yellowcake. Once processed, the resin is recycled and trucked back to the Satellite IX Plants for reuse. These modular, efficient, and relocatable IX Plants allow for cost-effective operation across multiple sites without the need to construct full processing facilities at each location, and they can be relocated once a wellfield is depleted.
Technical Disclosure and Qualified Person
John M. Seeley, Ph.D., P.G., C.P.G., enCore’s Chief Geologist, and a Qualified Person under Canadian National Instrument 43-101 and United States Securities and Exchange Commission (SEC) S-K 1300, has reviewed and approved the technical disclosure in this news release on behalf of the Company.
About enCore Energy Corp.
enCore Energy Corp., America’s Clean Energy Company™, is committed to providing clean, reliable, and affordable fuel for nuclear energy as the only United States uranium company with multiple central processing plants in operation. enCore operates the 100% owned and operated Rosita CPP in South Texas and the 70/30 joint venture Alta Mesa CPP with Boss Energy Ltd., with enCore operating as the project manager.
The enCore team is led by industry experts with extensive knowledge and experience in all aspects of ISR uranium operations and the nuclear fuel cycle. enCore solely utilizes ISR for uranium extraction, a well-known and proven technology co-developed by the leaders at enCore Energy.
