For example, improved scrubber performance and the ability of some firms to switch to lower sulfur fuels under the Acid Rain Program were reasons the cost of that program were less than projected.
Projected costs for that program ended up being overestimated.
Accordingly, sections 203 and 204 of the act, which require agencies to consult with small governments and solicit input from State, local, and tribal governments, are also inapplicable.