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2. Federal Particulate Matter (PM10) Area Designations: California, 2003

Polygon Stanford University Public content
2003. California Air Resources Board. Planning and Technical Support Division and Stephen P. Teale Data Center (Calif.). . This polygon shapefile displays particulate matter < 10 microns (PM 10) area designations pursuant to 40CFR81.305, the federal national ambient ... California. Air Resources Board.

3. Particulate Matter (PM-10): Federal Area Designations: California, 2011

Polygon Stanford University Public content
2011. United States. Environmental Protection Agency. Region IX. This polygon shapefile shows designated areas for particulate matter < 10 microns according to the 24-Hour National Ambient Air Quality Standard... California. Air Resources Board.

5. Particulate Matter (PM-2.5) Non-Attainment Areas: California, 2011

Polygon Stanford University Public content
2011. United States. Environmental Protection Agency. . This polygon shapefile identifies areas in the U.S. where air pollution levels have not met the 2006 National Ambient Air Quality Standards (NAAQS)... California. Air Resources Board.