Date: 2012-03-27 13:16:28National Ambient Air Quality Standards United States Environmental Protection Agency Ozone Clean Air Act Non-attainment area Language Spoken at Home Tropospheric ozone Air pollution in the United States Environment Chemistry | | Enclosure[removed]Indiana Ozone Summary Note: Prior to 2008, the ozone standard was 0.08 parts per million (ppm). Attainment was determined by the average of the 4th highest ozone values over a three-year period. Add to Reading ListSource URL: www.epa.govDownload Document from Source Website File Size: 2,56 MBShare Document on Facebook
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