EPA Proposes to Grant ACHD Request for Redesignation of Allegheny Co. to Attainment for National Standards for Fine Particulate Matter…in Part

EPA Proposes to Grant ACHD Request for Redesignation of Allegheny Co. to Attainment for National Standards for Fine Particulate Matter…in Part

Just about a year ago we blogged about the Allegheny County Health Department’s (ACHD) withdrawal of a request to the U.S. Environmental Protection Agency (EPA) for it to designate the county as being in attainment for the 2012 National Ambient Air Quality Standard (NAAQS) for fine particulate matter (PM2.5). Interestingly, ACHD made that request despite monitored air quality data that showed the county did in fact attain the NAAQS, purportedly …