Occupational Series
Environmental Protection Specialist
Series 0028
| 0702 | Minot + 1 more County | ND |
| 0703 | Bismarck County | ND |
| 0704 | Riverdale + 3 more County | ND |
| 0705 | Dickinson County | ND |
| 0706 | Adams + 25 more County | ND |
| 0710 | Billings + 2 more County | MT, WY |
| 0715 | Carlsbad + 3 more County | NM, UT |
| 0718 | Crow Agency + 1 more County | MT, ND |
| 0719 | Pawhuska County | OK |
| 0720 | Anchorage County | AK |