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Serious Ozone Update: Live Video Webinar

May 27, 2020

The Environmental Protection Agency (EPA) recently bumped up the Denver Metro and North Front Range Area's nonattainment status for ozone from moderate to serious. The Colorado Department of Public Health and Environment (CDPHE) is now working on modeling to support a package of control measures to be added to the Colorado state implementation plan (SIP) to bring the area into compliance with federal ozone standards.

In this live video webinar, we will hear from Amanda Brimmer, Technical Director for the Regional Air Quality Council (RAQC) to update our attendees on SIP planning and regulatory requirements. Also joining Amanda will be Ralph Morris of Ramboll, one of the original developers of many of the photochemical air quality models being used for regulatory decision making in the US, and leader of Ramboll’s modeling work for the RAQC and CDPHE on Colorado’s Serious Ozone SIP. Ralph and Amanda will be joined by DGS attorneys to provide some brief regulatory and litigation updates, and to field questions from our attendees.

The confirmed speakers for this program are as follows:

  • Amanda Brimmer, Technical Director, Regional Air Quality Council
  • Ralph Morris, Managing Principal, Ramboll
  • John Jacus, Partner, DGS
  • Will Marshall, Associate, DGS

This program is pending for Continuing Legal Education credit in the state of Colorado.

Event Information:

Wednesday, May 27

9:00-10:15 AM MDT

Registration for this event is now closed.

For questions, please email Jasmine Paek at

Presentation Materials