DEQ Releases Ozone Strategy for UGRB Nonattainment Area

Air Quality Division
Published: April 28, 2015

Today, April 28, 2015, the Wyoming Department of Environmental Quality (DEQ) released the updated Ozone Strategy for the Upper Green River Basin (UGRB).  The Air Quality Division (AQD) considered how the strategy should evolve after March 2015 to describe the overall ozone strategy for the UGRB ozone nonattainment area that will continue through September 2015.

Elements completed under the October 21, 2014 Ozone Strategy largely focused on winter ozone season work such as daily forecasting and winter ozone updates, ozone contingency plans, and Upper Green Winter Ozone Study monitoring in addition to continuation of work on elements from the April 22, 2014 Ozone Strategy.  The completion of elements from the Ozone Strategy are all important in continuing to build the foundation to help bring the UGRB back into ozone attainment.

“We have gone four winters (2012, 2013, 2014, 2015) without an ozone exceedance,” said Todd Parfitt, DEQ Director.

Cara Keslar, Monitoring Section Supervisor, added that “AQD monitoring during Upper Green Winter Ozone Studies has aided in understanding the benefits of ozone precursor emission reductions on ozone formation.” 

The UGRB Ozone Strategy is available on DEQ’s website at


DEQ to Hold Post Winter Ozone Season Open House

The Wyoming Department of Environmental Quality (DEQ) will meet with the public on Tuesday, May 19, 2015 for a 2015 Post Winter Ozone Season Update.

The meeting will be an open house format with multiple stations to provide maximum opportunity to answer questions and exchange information.  The topics to be represented include the 2015 Winter Ozone Season activities, the DEQ UGRB Ozone Strategy, emissions reductions and permitting, and the AQD produced water studies.  In addition, DEQ invited industry representatives and CURED representatives to participate at stations to help answer individual questions.

This meeting is being facilitated by DEQ at the Sublette BOCES Building, located on North Tyler in Pinedale, WY.  The open house is slated to start May 19, 2015 at 6:00 pm until 8:00 pm.