Ozone, Carbon Monoxide, Sulfur Dioxide, and Particulate Matter in the United States

Nonattainment Areas for 8-Hour Ozone Standard	Classification and Attainment Dates for Nonattainment Areas for 8-Hour Ozone Standard
Violation Counties for Revised 8-Hour Ozone Standard (0.075 ppm)	Nonattainment Areas for 1-Hour Ozone Standard
Nonattainment Areas for Current PM10 Standard	Nonattainment Areas for Current Sulfur Dioxide Standard
Nonattainment Areas for Current 8-Hour Carbon Monoxide Standard	Nonattainment Areas for the Current PM2.5 Standard
ASL Estimated Nonattainment Areas for a Daily PM2.5 Standard of 35 ug/m3 (441 Counties) for 2004-2005 Important	ASL Estimated Nonattainment Areas for a Daily PM2.5 Standard of 30 ug/m3 (704 Counties)
ASL Estimated Nonattainment Areas for a Daily PM2.5 Standard of 40 ug/m3 (291 Counties)	ASL Estimated Nonattainment Areas for a Daily PM2.5 Standard of 50 ug/m3 (109 Counties)
ASL Estimated Nonattainment Areas for an Annual PM2.5 Standard of 13 ug/m3	ASL Estimated Nonattainment Areas for an Annual PM2.5 Standard of 14 ug/m3
2000-2002 County Violations of the Annual PM2.5 Standard	Canadian and U.S. 4th Highest 8-Hour Average Ozone Values for 2001-2003
Canadian  and U.S. 4th Highest 8-Hour Average Ozone Values for 2003-2005	Canadian  and U.S. 4th Highest 8-Hour Average Ozone Values for 2004-2006
Comparison of Canadian  and U.S. 4th Highest 8-Hour Average Ozone Values for 2001-2003, 2002-2004, and 2003-2005 Periods	Comparison of Canadian  and U.S. 4th Highest 8-Hour Average Ozone Values for 2002-2004, 2003-2005, and 2004-2006 Periods
Estimated 8-hr Nonattainment Areas for Possible 0.06 and 0.07 ppm Ozone Standards for 2003-2005	Estimated 8-hr Nonattainment Areas for Possible 0.06, 0.07, and 0.075 ppm Ozone Standards for 2003-2005
Estimated W126 Nonattainment Areas for 7.0, 15.0, 19.0, and 21.0 ppm-hours for 2005	Estimated Counties that Exceed a W126 Value of 15.0 ppm-hours for 2003- 2005 and Do Not Violate the Current 8-hr Standard
Example of 24-Hour W126 Ozone Exposures for April - September 2001	Violating Areas for the Originally Proposed SUM06 Ozone Secondary Standard for 1993-1995
Possible Violations for the Spatially Averaged PM2.5 15 ug/m3 Annual Standard for 1993-1995

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