| Subject | Counties Served |
| Air Quality Standards | Statewide |
| Emissions Reduction Credits | Statewide |
| Federal Clean Air Act | Statewide |
| Greenhouse Gas Inventory | Statewide |
| I/M Vehicle Inspection Maintenance - Air Quality Issues | Statewide |
| Non Attainment Area - Policy | Statewide |
| Ozone Transport | Statewide |
| Reasonable Available Control Technology (RACT) | Statewide |
| Redesignation Requests | Statewide |
| Regional Air Quality Modeling | Statewide |
| Regional Haze | Statewide |
| State Implementation Plans | Statewide |
| Vehicle Air Emission Standards | Statewide |