The Colorado regulations allow a source to enter into Voluntary Emissions Reduction Agreements (VERAs) with the Colorado Air Pollution Control Division (APCD). A VERA provides the source with a regulatory assurance period during which the state cannot require installation of additional pollution control equipment or implementation of additional pollution control strategies. Platte River reduced nitrogen oxides (NOx) and sulfur dioxide (SO2) emissions from the coal-fired steam generating unit at the Rawhide Energy Station. To obtain a regulatory assurance period associated with the coal-fired unit’s emission controls, Platte River chose to enter into a VERA. WREG provided technical support to Platte River during the VERA development and negotiations. This support included review of VERA calculations and language, and research into Best Available Retrofit Technology (BART) and Best Available Control Technology (BACT) determinations for coal-fired steam generating units.
Because the project resulted in increases in carbon monoxide (CO) emissions, WREG also assisted Platte River in preparing a construction permit application for the associated emissions increase.