| WAC Sections | |
| 173-422A-010 | Purpose. |
| 173-422A-020 | Definitions. |
| 173-422A-030 | Vehicle emission test requirements and testing schedule for private and United States government vehicles. |
| 173-422A-040 | Emission test schedule for state and local government vehicles. |
| 173-422A-050 | Emission test areas. |
| 173-422A-060 | Exemptions. |
| 173-422A-100 | Gasoline vehicle emission test standards. |
| 173-422A-110 | Gasoline vehicle emission testing procedures. |
| 173-422A-120 | Gasoline vehicle emission testing equipment specifications. |
| 173-422A-200 | Exhaust emission test standards for diesel vehicles. |
| 173-422A-210 | Test procedure for diesel vehicles. |
| 173-422A-220 | Diesel vehicle testing equipment specifications. |
| 173-422A-300 | Testing equipment maintenance and calibration. |
| 173-422A-310 | Quality assurance. |
| 173-422A-320 | Test fees. |
| 173-422A-340 | Authorized testers. |
| 173-422A-400 | Emission specialist authorization. |
| 173-422A-410 | Requirements for listing businesses with authorized emission specialists. |
| 173-422A-500 | Civil penalty. |