Presentation Overview:

• SO₂ NAAQS Data Requirements Rule (DRR)
  • Final rule was signed on August 10, 2015.
  • Information available on: http://www.epa.gov/oaqps001/sulfurdioxide/implement.html
• The DRR was developed to address the need for additional air quality data to be used for implementing the 2010 1‐hour SO₂ NAAQS.
  • The existing SO₂ monitoring network characterizes localized SO2 source impacts in a limited set of areas.
  • Under the DRR, air agencies will provide additional air quality data characterizing 1‐hour peak concentrations and source‐oriented impacts.

• 1‐Hour SO2 NAAQS Implementation: Final Data Requirements Rule, Webinar Slides (PDF)(16 pp, 199 K)