When an area doesn't meet National Ambient Air Quality Standards we work with local clean air agencies and affected communities to develop Attainment State Implementation Plans. Currently, all Washington communities meet federal standards.
If air quality does not meet a standard, EPA may classify the affected area as nonattainment, meaning the area does not meet national air quality standards. A state implementation plan outlines actions to improve air quality.
The federal Clean Air Act requires Attainment State Implementation Plans (SIPs) be developed for areas not meeting the National Ambient Air Quality Standards. The plans describe how an area will be brought back into compliance with federal standards within a specific time frame.
Rules & Planning Unit