| Regulatory Office |
Counties within Area of Responsibility |
| Sacramento District HQ Office |
Butte, Sierra, Yuba, Lake, Glenn, Nevada, Colusa, Placer, Sutter, El Dorado, Alpine, Yolo, Sacramento, Mono, Amador, Solano, Calaveras, Tuolumne, San Joaquin, Contra Costa, Stanislaus, Alameda, Mariposa, Madera, Merced, Fresno, Tulare, Kings, Kern |
| Redding Field Office |
Modoc, Shasta, Lassen, Tehama, Plumas |
| Reno Field Office |
Elko, Humboldt, Washoe, Lander, Eureka, Pershing, Churchill, Lyon, Storey, Carson City, Douglas, Mineral, Esmeralda, White Pine, Nye, Lincoln, Clark, Tahoe Basin. |
| Bountiful Field Office |
Rich, Box Elder, Cache, Weber, Morgan, Summit, Davis, Tooele, Salt Lake, Duchesne, Wasatch, Utah, Juab, Carbon, Sanpete, Emery, Millard, Sevier, Daggett, Uintah, Grand, Beaver, Plute, Wayne, Garfield, Iron, Washington, Kane, San Juan |
| Grand Junction Field Office |
Delta, Eagle, Garfield, Grand, Gunnison, Hinsdale N, Mesa, Moffat, Montrose, Ouray, Pitkin, Routt, Rio Blanco, Saguache NW, San Miguel, and Summit
|
| Durango Field Office |
Archuleta, Dolores, Hinsdale S, La Plata, Mineral S, Montezuma, and San Juan
|