Energy & environment · 16/09/2004Updated: 10/17/2026 · 1 min read
EPA Approves Colorado's Revised Carbon Monoxide Maintenance Plan
Summary
The US Environmental Protection Agency (EPA) has approved a revised carbon monoxide maintenance plan for the Denver-Boulder metropolitan area, submitted by the State of Colorado, as part of its efforts to comply with the Clean Air Act's National Ambient Air Quality Standard (NAAQS).
Original source language: Federal Register — Environmental Protection AgencyOpen original release →