The California Clean Air Act (CCAA) of 1988 requires the air districts to endeavor to achieve and maintain the state ambient air quality standards by the earliest practicable date and develop plans for attaining the state ozone, carbon monoxide, sulfur dioxide, and nitrogen dioxide standards. Sacramento County meets the state ambient air quality standards for sulfur dioxide, nitrogen dioxide and carbon monoxide. The Sacramento Region is currently designated nonattainment for the state ambient air quality standards for ozone and particulate matter. More information on the attainment status for each of these parameters can be found here. State planning is done for individual counties – in our case, Sacramento County.
In accordance with the CCAA, the Sac Metro Air District prepared and submitted the 1991 Air Quality Attainment Plan (AQAP) to address Sacramento County's nonattainment status for the state standards for ozone and carbon monoxide (CO), and although not required, particulate matter 10 microns in diameter or less (PM10). The 1991 AQAP was designed to make expeditious progress toward attaining the state ozone standard and contained schedules for control programs on stationary sources, transportation and indirect sources, and a vehicle/fuels program.
