Regulation & law · 16/09/2002

EPA Approves Colorado's Air Quality Plan for Denver PM10 Redesignation

The US Environmental Protection Agency (EPA) has approved the State of Colorado's plan to redesignate the Denver area from nonattainment to attainment for particulate matter with an aerodynamic diameter less than or equal to a nominal 10 microns (PM10), following a 13-year maintenance plan demonstrating compliance with national ambient air quality standards.