Regulation & law · 01/12/2014

EPA Proposes Approval of Montana's Second 10-Year Carbon Monoxide Maintenance Plan for Great Falls

The Environmental Protection Agency (EPA) is proposing approval of a State Implementation Plan (SIP) revision submitted by the State of Montana, which includes a second 10-year maintenance plan for the Great Falls area to maintain the carbon monoxide National Ambient Air Quality Standard (NAAQS). The plan also includes an alternative monitoring strategy for the Great Falls CO maintenance area.