Jump to main content or area navigation.

Contact Us

Area Designations for 1997 Fine Particle (PM2.5) Standards

EPA Responses to States and Tribes

Information provided for informational purposes only Note: EPA no longer updates this information, but it may be useful for historical purposes. See the PM Designations Home Page for more recent information about PM Designations.

On June 28 and 29, 2004 EPA responded to state and tribal recommendations for attainment and nonattainment areas under the more protective national air quality standard for fine particles. Follow the links below to read:

Jump to main content.