The U.S. Forest Service is developing an environmental cleanup plan for the San Mateo Uranium Mine under the Comprehensive Environmental Response, Compensation and Liability Act. The site is located on the Mount Taylor Ranger District of the Cibola National Forest, Cibola County, approximately 12 miles northeast of Grants. The recommended cleanup alternative is to consolidate the waste rock piles and place them in an on-site repository. A geomembrane would be placed above the waste rock in the repository and would be covered with clean soil, re-vegetated, and armored with rock.