Callers complained of strong sulfur smells.
American Lung Association's "State of the Air" report includes Bellingham, Skagit, County, Whatcom County.
Hearing is set for April 27 at Brodniak Hall in Anacortes.
District wins Platinum award through Partners for Clean Air program.
Mount Vernon councilman will serve 1-year term.
Smoke pollution levels rise during cold weather, stagnant air.
Washington's Clean Air Act, NW Clean Air were created in 1967.
Mark Buford leads agency's air quality work.
Incident in early 2015 spurred widespread complaints.
Cherry Point Refinery wants to upgrade coker unit heaters.