CENTURY LITHIUM RECEIVES WATER POLLUTION CONTROL PERMIT FOR DEMONSTRATION PLANT
The permit authorizes the facility, but FAA construction approval and pre-operational requirements remain outstanding.
Sentiment and the balance of points
Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.
Rhea-AI Summary
Century Lithium (CYDVF) received a Nevada Water Pollution Control Permit on October 28, 2026, for its Tonopah lithium demonstration facility. Issued to subsidiary Cypress Holdings (Nevada), the permit authorizes construction, operation and closure of the plant supporting the wholly owned Angel Island project.
Construction remains subject to FAA approval; the agency's environmental review is nearing completion. A steel building has been purchased, and its foundation slab is complete and coated. Before operations, two tailings ponds require testing and certification; updated operating plans, a notice of intent and an NDEP inspection are also required.
The company plans feasibility-study test work and larger-scale rare earth recovery testing, with research initiatives dependent on funding. Earlier rare earth recovery results apply only to the tested bulk sample. Laboratory testing continues independently in Butte, Montana.
How this balance works
Rhea-AI gives every point it takes from this document a weight. Minor counts 1, Moderate 3 and Major 9, so one Major point outweighs several Minor ones. The bar adds up the weights on each side, and when neither side holds more than 65% of the total the balance reads Mixed.
It reads the document as published, with the same rules for every company, and it does not look at what the market expected or at how the stock traded, so a point can be objectively good on a day the stock falls.
Rhea-AI Sentiment measures something else, the tone of the wording.
Hollow bars mark forward-looking points. How the balance works
Positive
- Moderate pointWater Pollution Control Permit authorizes construction, operation and closure of the Tonopah demonstration facility.
- Minor pointClass II General Air Quality Operating Permit is also held for the Tonopah Airport site.
- Minor pointSteel building purchased; the process building's foundation slab is complete with a chemical-resistant coating.
- Minor pointPrior continuous operation demonstrated the process producing battery-grade lithium carbonate from Angel Island bulk samples.
- Minor point. Forward-looking: it has not happened yet and may not happen.Planned metallurgical testing includes claystone zones 1 and 2 and evaluation of lithium process improvements.
4 minor points
- Minor pointPrior rare earth testing demonstrated recovery from bulk-sample leach solutions without adversely affecting lithium recovery.
- Minor point. Forward-looking: it has not happened yet and may not happen.Planned larger-scale testing will evaluate rare earth recovery from Angel Island claystone.
- Minor pointButte laboratory testing continues independently of the demonstration plant schedule.
- Minor point. Forward-looking: it has not happened yet and may not happen.Chlor-alkali process research examines alternative leaching methods that the company says could reduce project power requirements.
Negative
- Minor point. Forward-looking: it has not happened yet and may not happen.FAA construction approval remains pending; construction will begin upon receipt.
- Minor point. Forward-looking: it has not happened yet and may not happen.Two tailings ponds require certification through hydrostatic testing of liners and leak detection systems; work is underway.
- Minor point. Forward-looking: it has not happened yet and may not happen.Pre-operational requirements remain: updated operating plans, a notice of intent to operate and an NDEP inspection.
- Minor point. Forward-looking: it has not happened yet and may not happen.Research initiatives depend on funding, including recovery of other critical minerals.
- Minor pointRare earth results represent only the bulk sample, not necessarily the Angel Island deposit.
- Minor pointRare earth recovery is excluded from the 2026 Feasibility Study.
AI-generated analysis. How Rhea-AI works. Not financial advice.
"Receiving the Water Pollution Control Permit is a key step in our efforts to reconstruct and upgrade the Demonstration Plant in
Permitting Progress
On October 28, 2026, NDEP's Bureau of Mining Regulation and Reclamation issued Water Pollution Control Permit NEV2026117 for the Demonstration Plant to the Company's wholly owned subsidiary, Cypress Holdings (
The WPCP covers the process building and two existing double-lined tailings ponds with leak detection on site. Before operations can begin, the WPCP requires the two ponds to be certified through hydrostatic testing of their liner and leak detection systems. That work is underway. Other pre-operational requirements include submitting updated operating plans and a notice of intent to operate; and completing an NDEP facility inspection. The Company, through its wholly owned subsidiary Cypress, also holds a Class II General Air Quality Operating Permit issued by NDEP's Bureau of Air Pollution Control for the Tonopah Airport site.
The Demonstration Plant will be constructed on an industrial site at the Tonopah Airport, which the Company leases from
Demonstration Plant and Metallurgical Testing
The Company has purchased a steel building for the Demonstration Plant, with engineered modifications to suit the plant layout. The concrete foundation slab for the process building is complete and has been sealed with a chemical-resistant coating. Construction will begin upon receipt of FAA approval.
When operational, the Demonstration Plant will be used to complete the structured metallurgical testing recommended in the 2026 Feasibility Study (see Updated NI 43-101 Technical Report on the Feasibility Study of the Clayton Valley Lithium Project,
As reported in the Company's news releases dated December 2 and December 11, 2025, test work on primary leach solutions generated from a 500-tonne bulk sample of Angel Island claystone demonstrated recovery of REEs, including dysprosium, gadolinium, neodymium and praseodymium, without adversely affecting lithium recovery. The bulk sample assayed
Metallurgical testing for Angel Island has continued at the Company's laboratory in
Qualified Person
The scientific and technical information contained in this news release has been reviewed and approved by Todd S. Fayram, MMSA-QP, Chief Technical Officer of Century Lithium, a non-independent Qualified Person as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects.
ABOUT CENTURY LITHIUM CORP.
Century Lithium Corp. is an advanced-stage lithium development company focused on its
The Company has developed a patent-pending process that incorporates hydrochloric acid leaching combined with direct lithium extraction to produce battery-grade lithium carbonate. As part of the integrated chlor-alkali process, Angel Island is designed to produce sodium hydroxide as a co-product, with planned surplus sales expected to lower operating costs, reduce reliance on externally sourced reagents, and minimize environmental impacts.
Century Lithium is currently advancing Angel Island through the permitting process.
Century Lithium trades on the TSX Venture Exchange under the symbol "LCE" the OTCQX under the symbol "CYDVF", and on the Frankfurt Stock Exchange under the symbol "C1Z".
To learn more, please visit centurylithium.com.
ON BEHALF OF CENTURY LITHIUM CORP.
WILLIAM WILLOUGHBY, PhD., PE
President & Chief Executive Officer
NEITHER THE TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES PROVIDER ACCEPTS RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THE CONTENT OF THIS NEWS RELEASE.
Cautionary Note Regarding Forward-Looking Statements
This release contains certain forward-looking statements within the meaning of applicable Canadian securities legislation. In certain cases, forward-looking statements can be identified by the use of words such as "plans", "expects" or "does not anticipate", or "believes", or variations of such words and phrases or statements that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" and similar expressions suggesting future outcomes or statements regarding an outlook.
Forward-looking statements relate to any matters that are not historical facts and statements of our beliefs, intentions and expectations about developments, results and events which will or may occur in the future, without limitation, statements with respect to receipt of FAA approval, construction of the process building, the certification of the tailings ponds, satisfaction of the pre-operational requirements of the WPCP, the timing of commissioning and testing at the Demonstration Plant, the results of metallurgical testing, the potential recovery of REEs, the results of research into an enhanced chlor-alkali process, the potential development and value of the Project, and the Company's future development plans.
These and other forward-looking statements and information are subject to various known and unknown risks and uncertainties, many of which are beyond the ability of the Company to control or predict, that may cause their actual results, performance or achievements to be materially different from those expressed or implied thereby, and are developed based on assumptions about such risks, uncertainties and other factors set out herein. These risks include those described under the heading "Risk Factors" in the Company's most recent annual information form and its other public filings, copies of which can be under the Company's profile at www.sedarplus.ca. The Company expressly disclaims any obligation to update-forward-looking information except as required by applicable law. No forward-looking statement can be guaranteed, and actual future results may vary materially. Accordingly, readers are advised not to place reliance on forward-looking statements or information. Furthermore, Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability.
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SOURCE Century Lithium Corp.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What permit did Century Lithium receive for its Tonopah demonstration plant?
Century Lithium's subsidiary Cypress Holdings (Nevada) received Water Pollution Control Permit NEV2026117 on October 28, 2026. Nevada's environmental regulator issued the permit, which authorizes construction, operation and closure of the demonstration facility and covers its process building and two existing double-lined tailings ponds.
What approvals and requirements remain before Century Lithium's Tonopah plant can operate?
FAA approval is required before process-building construction, while operations require tailings-pond certification, updated operating plans, a notice of intent to operate and an NDEP facility inspection. The FAA environmental review is nearing completion, and hydrostatic testing of the ponds' liner and leak detection systems is underway.
What did Century Lithium's Angel Island rare earth testing show?
Testing of leach solutions from a 500-tonne bulk sample demonstrated rare earth recovery without adversely affecting lithium recovery. The sample assayed 0.024% total rare earth oxides, comprising 75% light rare earth elements and 25% yttrium and heavy rare earth elements. These results represent the bulk sample only, not necessarily the deposit as a whole.