Closure of 65 mine features, including shafts, tunnels, and open cuts to secure the workings against threats to human and wildlife safety using bat gates, cupolas, polyurethane foam, and fencing.
Location
Project is centered on 65 abandoned mine land features on the Nogales Ranger District in Pima and Santa Cruz County, AZ, approximately 2 to 9 miles south/southwest of Arivaca, AZ.
Project timeline
1
NEPA Start Date
3/31/2026
2
Finding/Decision Date
9/18/2026
NEPA / regulatory detail
| Categorical Exclusion | USDA-32d-USFS |
| Decision Signed Date | 9/18/2026 |