Regulation & law · 06/10/1997

EPA Approves Richmond Area for Ozone Standard Attainment

The US Environmental Protection Agency (EPA) has determined that the Richmond moderate ozone nonattainment area in Virginia has met the 1-hour ozone standard of 0.12 parts per million (ppm) as set by the Clean Air Act (CAA), based on four years of air quality monitoring data from 1993 to 1996, and has continued to meet the standard since then.