Summary of Central Puget Sound Area Carbon Monoxide (CO) Attainment and Maintenance Plans
The Central Puget Sound Area was designated nonattainment for carbon monoxide (CO) and classified as moderate upon enactment of the Clean Air Act Amendments in 1990.
On October 11, 1996, EPA approved the Central Puget Sound Area CO maintenance plan (61 FR 53323 (PDF))(6 pp, 140 K).
The plan relies on control strategies needed to assure attainment of the National Ambient Air Quality Standards (NAAQS) for CO. The strategy relies on the existence of an approved vehicle Inspection and Maintenance program.
- 40 CFR Part 86, Federal Motor Vehicle Emission Control Program
- WAC 173-422, Motor Vehicle Emission Inspection
- WAC 173-492, Motor Fuel Specifications for Oxygenated Gasoline
- PSCAA Regulation II, Section 2.09, Oxygenated Gasoline Contingency Measure & Fee Schedule
EPA Effective Date
October 11, 1996