Please join us for a lively and informative luncheon program on Thursday, October 19, 2023, 11 AM – 1 PM at the Grand Rapids offices of Warner Norcross + Judd.
Canadian Wildfire Smoke
Jim Haywood, EGLE Chief Meteorologist, will discuss the dramatic impacts on ambient air quality this past summer resulting from the long-range transport of the Canadian wildfire fine particulate smoke in combination with unusual meteorological conditions. The wildfire smoke episodes caused elevated ambient concentrations of fine particulate matter and documented health impacts.
PM2.5 Annual Ambient Air Quality Standard
Sarah Arra, EPA Region 5 Attainment Planning Supervisor, will discuss EPA’s January 2023 proposal to lower the primary annual ambient air quality standard for PM2.5. It currently stands at 12.0 µg/m3, and it is proposed to revise it to as low as 8.0 µg/m3, which may cause certain areas in Michigan to become redesignated as non-attainment, and present additional challenges passing modeling in support of air permit applications. Timing of the final rule, the final standard, PM2.5 sources, and mitigation measures will be discussed.