IDNR is requesting public comment on the State of Iowa's proposed infrastructure state implementation plan (SIP) for the 2012 PM2.5 National Ambient Air Quality Standards (NAAQS). Comments are being accepted until 4:30 p.m. on November 16, 2015 and a public hearing will be held at 1:00 p.m. on November 16, 2015. Information about the public hearing and the draft PM2.5 SIP can be viewed on the stakeholder involvement page of the IDNR website.