Responsible Containment Reauthorization Act of 2026

This bill extends the authorization period for a uranium mill tailings disposal site in Mesa County, Colorado, until the site reaches its designed capacity. It amends the Uranium Mill Tailings Radiation Control Act of 1978 to remove the previous expiration date of September 30, 2031. The change allows the site to remain operational for waste disposal without a fixed end date, ensuring continued regulatory oversight under the existing federal law. The legislation directly affects the facility operators and federal agencies responsible for managing radioactive waste containment in the region.