Department of Environmental Quality Proposes Revision to SIP for PM2.5 NAAQS



The Department of Environmental Quality (the Department) recently announced they propose to revise Virginia's state implementation plan (SIP) for very fine particulate matter (PM2.5). The SIP was created by Virginia to satisfy its obligations under the Clean Air Act to attain and maintain air quality standards set by the Environmental Protection Agency (EPA).

The revisions that the Department is considering are listed below:

  • Revocation of the 1997 PM2.5 ambient air quality standard;
  • Specify that different pollutants are not summed to determine applicability of a major stationary source or major modification
  • The definition of "regulated NSR pollutant" and "significant" are amended to specify precursors of PM2.5; and
  • The applicability section of the Regulation for General Conformity is amended to specify PM2.5 precursors in the list of emissions applicability rates.

The revisions will be submitted to the EPA for approval.

The proposal and any supporting documents are available on the DEQ Air Public Notices for Plans website.

The Department is seeking comment on the matter of whether the regulation amendments should be submitted as a revision to the SIP. The comment period opened September 4, 2017 and comments or hearing requests are due Oct. 4, 2017. For more information, contact Karen Sabasteanski of DEQ at (804) 698-4426.