The recently finalized regional haze rule will also require power generators to reduce SO2 and NOx emissions either through the implementation of best available retrofit technology (BART) or a trading program yet to be developed.
Power generators will be required to reduce SO2 and NOx emissions.
mnli hypothesis: Power generators will be required to reduce SO2 and NOx emissions. premise: The recently finalized regional haze rule will also require power generators to reduce SO2 and NOx emissions either through the implementation of best available retrofit technology (BART) or a trading program yet to be developed.