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Air Quality Carbon Monoxide Plan

Revised Carbon Monoxide Maintenance Plan

The metropolitan Washington area has been meeting federal standards for carbon monoxide (CO), one of six ambient pollutants regulated by the Clean Air Act (CAA), since March 1996. The Clean Air Act requires states to submit two 10-year maintenance plans demonstrating that the region will continue to maintain the eight-hour CO standard. The first Carbon Monoxide Maintenance Plan covered 10 years after redesignation, from 1996-2007. The region was required to revise the Maintenance Plan eight years after redesignation, in this case, March 2004. The Revised Carbon Monoxide Maintenance Plan covers the period from 2007 -2016. It demonstrates, using current CO data and projections, that the Washington region will continue to meet this standard for that period.

The Metropolitan Washington Air Quality Committee (MWAQC) approved the “Revised Carbon Monoxide Maintenance Plan” on February 19, 2004.

View or Download the Revised Plan (questions about downloading)

• Revised Carbon Monoxide Maintenance Plan and Revised 1990 Carbon Monoxide Base Year Emissions Inventory for the Washington DC-MD-VA Nonattainment Area (1.9 MB PDF file)