2015 Ozone NAAQS State Implementation Plan
In 2015, U.S. Environmental Protection Agency (EPA) promulgated a new National Ambient Air Quality Standards (NAAQS) for Ozone at a maximum daily 8-hour average concentration of 0.070 parts per million (ppm). The Sacramento Federal Nonattainment Area (SFNA, map) exceeded the standard and based on the modeling …
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