Air Plan Approval; Arizona; Bullhead City; Second 10-Year PM10

Publication Date: 
Thursday, December 9, 2021 - 4:00am

The Environmental Protection Agency (EPA) is proposing to approve a revision to the Bullhead City portion of the Arizona State Implementation Plan (SIP). These revisions concern the second 10-year maintenance plan for Bullhead City for the 1987 National Ambient Air Quality Standards (NAAQS or ``standards'') for particulate matter less than 10 micrometers in diameter (PM<INF>10</INF>).

Environmental Protection Agency