Ozone Nonattainment Areas - 1 Hour

Metadata Updated: February 8, 2018

This data layer identifies areas in the U.S. where air pollution levels have not met the National Ambient Air Quality Standards (NAAQS) for Ozone - 1hour (Legacy Standard) and have been designated "nonattainment". The EPA Office of Air Quality Planning and Standards (OAQPS) has set National Ambient Air Quality Standards for six principal pollutants, which are called "criteria" pollutants. Under provisions of the Clean Air Act, which is intended to improve the quality of the air we breathe, EPA sets limits on how much of a pollutant can be in the air anywhere in the United States. This ensures that all Americans have the same basic health and environmental protections. The law allows individual states to have stronger pollution controls, but states are not allowed to have weaker pollution controls than those set for the whole country. EPA calls these pollutants "criteria air pollutants" because the agency has regulated them by first developing health-based criteria (science-based guidelines) as the basis for setting permissible levels. One set of limits (primary standard) protects health; another set of limits (secondary standard) is intended to prevent environmental and property damage. A geographic area that meets or does better than the primary standard is called an attainment area; areas that don't meet the primary standard are called nonattainment areas.

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Dates

Metadata Date January 23, 2018
Metadata Created Date December 7, 2016
Metadata Updated Date February 8, 2018
Reference Date(s) February 25, 2014 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from Environmental Dataset Gateway FGDC CSDGM

Additional Metadata

Resource Type Dataset
Metadata Date January 23, 2018
Metadata Created Date December 7, 2016
Metadata Updated Date February 8, 2018
Reference Date(s) February 25, 2014 (publication)
Responsible Party U.S. Environmental Protection Agency, Region 8 (Point of Contact)
Contact Email
Access Constraints Use Constraints: None. Please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the most recent copy of both data and metadata. Acknowledgement of the EPA would be appreciated., Access Constraints: None.
Bbox East Long -104.293287
Bbox North Lat 40.264198
Bbox South Lat 39.129519
Bbox West Long -105.694522
Coupled Resource
Frequency Of Update asNeeded
Guid
Harvest Object Id b488e362-c84a-4633-8145-d479c4681958
Harvest Source Id d0d72986-7693-406b-b71d-840540909711
Harvest Source Title Environmental Dataset Gateway FGDC CSDGM
Licence https://edg.epa.gov/EPA_Data_License.htm
Licence Url https://edg.epa.gov/EPA_Data_License.htm
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True

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