Air Emission Control Technology

The Project will be designed, constructed, and operated in a manner consistent with all applicable federal, state, and local regulatory requirements. Potential environmental effects of the Project will be mitigated through the use of state-of-the-art emissions control technologies.

The Project will use coal from the Powder River Basin in Wyoming, which is known for its inherent low sulfur and low chlorine content.

Best Available Control Technology
The Project will utilize the best available control technology (BACT)  to reduce the air emissions that would otherwise occur to levels that ensure that nearby ambient air will be well within the standards set by federal and state regulations.  BACT for this coal-fired power plant includes:

  • Low-NOx burners, over-fire air, and Selective Catalytic Reactor (SCR) for control of nitrogen oxides
  • Dry lime flue gas desulfurization (dry FGD) for control of sulfur dioxide
  • Fabric filter baghouse to remove over 99.9 percent of particulate matter and fabric filter dust collectors on all material handling systems

The air emissions from the Project will, like those from the existing unit, reflect technology solutions that will minimize the emission of criteria pollutants. These emissions represent only a small fraction of the air emissions from a typical coal-based power plant constructed just three decades ago.

Ambient Air Quality

Mercury Controls

Class I Impacts

PSD Construction Permit