| WAC Sections | |
| 173-476-010 | Purpose. |
| 173-476-020 | Applicability. |
| 173-476-030 | Definitions. |
| 173-476-100 | Ambient air quality standard for PM-10. |
| 173-476-110 | Ambient air quality standards for PM-2.5. |
| 173-476-120 | Ambient air quality standard for lead (Pb). |
| 173-476-130 | Ambient air quality standards for sulfur oxides (sulfur dioxide). |
| 173-476-140 | Ambient air quality standards for nitrogen oxides (nitrogen dioxide). |
| 173-476-150 | Ambient air quality standard for ozone. |
| 173-476-160 | Ambient air quality standards for carbon monoxide. |
| 173-476-170 | Monitor siting criteria. |
| 173-476-180 | Reference conditions. |
| 173-476-900 | Table of standards. |