• Organization: Department of Transportation
• Updated: 2025-12-13T00:00:00.000+00:00

The Nonattainment Area - 1 hr Ozone (1979) dataset was updated on November 30, 2025 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of Transportation (USDOT)/Bureau...

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• Organization: Department of Transportation
• Updated: 2025-12-13T00:00:00.000+00:00

The Nonattainment Area - 8 hr Ozone (1997) dataset was updated on November 30, 2025 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of Transportation (USDOT)/Bureau...

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• Organization: Department of Transportation
• Updated: 2025-12-13T00:00:00.000+00:00

The Nonattainment Area - 8 hr ozone (2015) dataset was updated on November 30, 2025 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of Transportation (USDOT)/Bureau...

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• Organization: Department of Transportation
• Updated: 2025-12-13T00:00:00.000+00:00

The Nonattainment Area - 8 hr ozone (2008) dataset was updated on November 30, 2025 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of Transportation (USDOT)/Bureau...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2015-07-01T00:00:00.000+00:00

This web service contains the following layers: Ozone 1997 NAAQS NAA State Level and Ozone 1997 NAAQS NAA National Level. Full FGDC metadata records for each layer may be found by clicking the...

• Organization: U.S. Environmental Protection Agency
• Updated: 2015-07-01T00:00:00.000+00:00

This web service contains the following layers: Ozone 2008 NAAQS NAA State Level and Ozone 2008 NAAQS NAA National Level. Full FGDC metadata records for each layer may be found by clicking the...

• Organization: U.S. Environmental Protection Agency
• Updated: 2015-07-01T00:00:00.000+00:00

This web service layer, Ozone 8-hr (2015 standard), displays identified state level areas where ground-level ozone have not met the National Ambient Air Quality Standards (NAAQS) established in...

• Organization: U.S. Environmental Protection Agency
• Updated: 2018-02-12

Data on NOx RACT, ozone nonattainment, and power plant employment, and program files used in: Glenn Sheriff, Ann E. Ferris, and Ronald J. Shadbegian, "How Did Air Quality Standards Affect...

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• Organization: State of Oregon
• Updated: 2023-06-28

This polygon layer contains a spatial representation of geographic areas that are designated as Air Quality Maintenance Areas and Nonattainment Areas for the criteria pollutant OZONE. A criteria...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2015-07-01T00:00:00.000+00:00

This web service contains the following layers: PM2.5 Annual 1997 NAAQS State Level and PM2.5 Annual 1997 NAAQS National . It also contains the following tables:...

• Organization: U.S. Environmental Protection Agency
• Updated: 2015-07-01T00:00:00.000+00:00

This downloadable data package contains the following state level layers: Ozone 8-hr (1997 standard), Ozone 8-hr (2008 standard), Lead (2008 standard), SO2 1-hr (2010 standard), PM2.5 24hr (2006...

• Organization: State of Oregon
• Updated: 2023-06-28

This polygon layer contains a spatial representation of geographic areas that are designated as Air Quality Maintenance Areas and Nonattainment Areas for the criteria pollutant CARBON MONOXIDE. A...

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• Organization: State of Oregon
• Updated: 2023-06-28

This polygon layer contains a spatial representation of geographic areas that are designated as Air Quality Maintenance Areas and Nonattainment Areas for the criteria pollutant PM10 (particulate...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2015-07-01T00:00:00.000+00:00

This web service contains the following state level layers:Ozone 8-hr (1997 standard), Ozone 8-hr (2008 standard), Lead (2008 standard), SO2 1-hr (2010 standard), PM2.5 24hr (2006 standard), PM2.5...

• Organization: U.S. Environmental Protection Agency
• Updated: 2015-07-01T00:00:00.000+00:00

This web service contains the following layer: PM10 Nonattainment Areas (1987 NAAQS). Full FGDC metadata records for each layer may be found by clicking the layer name at the web service endpoint...

• Organization: U.S. Environmental Protection Agency
• Updated: 2015-07-01T00:00:00.000+00:00

This web service contains the following layer: SO2 2010 NAAQS State Level. Full FGDC metadata records for each layer may be found by clicking the layer name at the web service endpoint...

• Organization: U.S. Environmental Protection Agency
• Updated: 2015-07-01T00:00:00.000+00:00

This web service contains the following layers: PM2.5 24hr 2006 NAAQS State Level and PM2.5 24hr 2006 NAAQS National. Full FGDC metadata records for each layer may be found by clicking the layer...

• Organization: U.S. Environmental Protection Agency
• Updated: 2015-07-01T00:00:00.000+00:00

This web service contains the following layer: PM2.5 Annual 2012 NAAQS State Level. Full FGDC metadata records for each layer may be found by clicking the layer name at the web service endpoint...

• Organization: U.S. Environmental Protection Agency
• Updated: 2015-07-01T00:00:00.000+00:00

This web service contains the following layers: Lead NAA 2008 NAAQS and Lead NAA Centroids 2008 NAAQS. Full FGDC metadata records for each layer may be found by clicking the layer name at the web...

• Organization: U.S. Environmental Protection Agency
• Updated: 2015-07-01T00:00:00.000+00:00

This web service layer, Carbon Monoxide (1990 NAAQS), displays identified state level areas where carbon monoxide pollution has not met the National Ambient Air Quality Standards (NAAQS)...