2012 Annual PM2.5 110(a) Infrastructure Certification

The final "Certification for Clean Air Act Sections 110(a)(1) and (2) Infrastructure Requirements for the 2012 Annual Fine Particulate Matter (PM2.5) Primary Standard" was submitted to the United States Environmental Protection Agency (EPA) on December 4, 2015.

The EPA revised the annual National Ambient Air Quality Standard (NAAQS) for PM2.5 on December 14, 2012, by lowering the primary (health-based) standard to 12.0 micrograms per cubic meter (μg/m3) from the previous 15.0 μg/m3 standard. All of North Carolina is attaining the standard and is designated as unclassifiable/attainment.

When the EPA revises an existing standard, Clean Air Act Sections 110(a)(1) and (a)(2) require each state to revise their State Implementation Plan (SIP) to show they have the authority and programs needed to implement, maintain, and enforce the standard. This certification describes the basic program "infrastructure" elements that address the provisions of Section 110(a)(1) and (2) for the 2012 annual PM2.5 NAAQS.

The transmittal letter, narrative, and attachments are available through the following links:

DEQ Submittals:

EPA Actions:

  • Proposed Rule:  Air Plan Approval; North Carolina; Infrastructure Requirements for the 2012 PM2.5 National Ambient Air Quality Standard (81 FR 47314, July 21, 2016)
  • Final Rule:  Air Plan Approval and Disapproval; North Carolina: New Source Review for Fine Particulate Matter (PM2.5).  Partially approve the PSD elements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J) and disapprove with respect to the PM2.5 increment requirements of 2010 PSD PM2.5 Rule. (81 FR 63107, September 14, 2016)
  • Proposed Rule:  Air Plan Approval and Disapproval; North Carolina: New Source Review for Fine Particulate Matter (PM2.5).  Partially approve the PSD elements of sections 110(a)(2)(C), 110(a)(2)(D)(i)(II) (prong 3) and 110(a)(2)(J) and disapprove with respect to the PM2.5 increment requirements of 2010 PSD PM2.5 Rule. (81 FR 28797, May 10, 2016)
  • Final Rule: Air Plan Approval; North Carolina; Visibility Infrastructure Requirements for CAA Section 110(a)(2)(d)(i)(II), prong #4 (81 FR 35634, June 3, 2016)
  • Proposed Rule:  Air Plan Approval; North Carolina; Visibility Infrastructure Requirements for CAA Section 110(a)(2)(d)(i)(II), prong #4 (81 FR 20600, April 8, 2016)

Please direct any further questions or comments concerning this SIP submittal to Mr. Randy Strait at randy.strait@ncdenr.gov.