Milestone Environmental Receives Class VI Permit to Permanently Store Carbon Dioxide in the Permian Basin

Permit caps four years of work at Milestone’s Midland Basin Carbon Hub

HOUSTON and MIDLAND, Texas — November 13, 2026 — Milestone Environmental, an environmental infrastructure company specializing in energy waste management and carbon sequestration, today announced that the Railroad Commission of Texas (RRC) has issued a Class VI permit for a carbon storage well at its Midland Carbon Hub in Upton County, Texas. The permit authorizes Milestone to inject and permanently store up to 11.9 million metric tons of carbon dioxide (CO₂), at a rate of up to one million metric tons per year.

Class VI wells carry some of the most demanding requirements in underground injection. Milestone began developing the project four years ago, and its application has since been reviewed multiple times by the RRC, the U.S. Environmental Protection Agency (EPA), and the Texas Commission on Environmental Quality (TCEQ). The application moved to the RRC when it became the primary Class VI permitting authority in Texas in December 2025, and the project met every requirement.

The facility will inject CO₂ more than 12,200 feet underground, below all hydrocarbon-producing zones and freshwater aquifers. Monitoring at the surface and downhole will include real-time groundwater monitoring, micro-seismic monitoring and earthquake monitoring.

“Earning a Class VI permit takes years of work and a team willing to prove every detail,” said Gabriel Rio, President and Chief Executive Officer of Milestone Environmental. “This permit brings industrial-scale carbon storage to the heart of American energy production and reflects our injection track record and the subsurface expertise behind every Milestone facility.”

“Milestone appreciates the professionalism, technical engagement and diligence of the RRC regulatory staff throughout the review,” said Adam Haecker, Director of Geoscience at Milestone Environmental. “Their review confirmed that this project meets the state’s rigorous standards, and it positions us to help meet the carbon sequestration needs of the Permian Basin. This permit is the culmination of years of determination and the beginning of something significant. I’m excited to see this project move from vision to reality.”

The permit marks a major step for Milestone’s Midland Basin Carbon Hub, first announced in September 2023, which spans more than 10,000 acres of land and pore space in Midland and Upton counties. The hub brings carbon storage capacity to the nation’s top oil-producing region and gives natural gas processors, power generators and other industrial operators in West Texas a path to lower emissions.

About Milestone Environmental

Milestone Environmental is a leading environmental infrastructure company delivering reliable, safe, compliant and best-in-class waste management and carbon sequestration solutions. Our strong expertise in adhering to regulatory standards helps businesses mitigate risk and achieve environmental goals while protecting human health. Headquartered in Houston, Texas, with a field office in Midland, Texas, Milestone operates a growing network of advanced, regulated, and permitted facilities, where we process and permanently dispose of a broad range of complex waste streams, protecting businesses from environmental liability for the long term. The strategically located facilities position the company to service a wide range of sectors - including manufacturing, agriculture, chemicals, pharmaceuticals, food and beverage, power, and oil and gas - while minimizing customer logistics costs and environmental impact. In 2025, Milestone managed approximately 1.3 billion gallons of waste.

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