Current Press Releases

Jun 10, 2013


Back ][ Current Press Releases Home ][ Next ]

Lisa Peterson
Director's Office


DEQ and PPL Agreement Will Improve Billings Air Quality


Helena --- The Montana Department of Environmental Quality (DEQ) and PPL Montana, LLC, have reached an agreement that will reduce sulfur dioxide (SO2) emissions from the Corette Electrical Generating Station in Billings by 60 percent and settle existing air quality permit violations.

"This meaningful agreement will ensure cleaner air in Billings for years to come," said DEQ Director Tracy Stone-Manning.

Under the agreement, entered as consent decree in Yellowstone County District Court, PPLM has agreed to install sulfur dioxide controls at Corette by April, 2015. Not only will this reduce Montanans’ exposure to air pollutants, it is an important step towards assuring the state can implement federal air quality requirements in an efficient and cost-effective manner in the Billings region.

The agreement also calls for PPLM to pay a $250,000 penalty, implement an Opacity Task Force, and take other corrective actions to settle violations for operating under expired permits and exceeding opacity limits at Corette and Colstrip. Opacity measures the ability to see through air. High levels of opacity obscure visibility and indicate air pollution.

For questions about the DEQ's Montana Clean Air Act permitting program, please contact the Air Resources Management Bureau at (406) 444-3490 or visit the DEQ website at

### END ###