The Environmental Protection Agency has updated regulations for industrial boilers that are aimed at curbing emissions of acid gases, mercury and fine particulate matter. The agency estimates the ruling will cost U.S. manufacturers, chemical facilities and oil refineries between $1.3 billion and $1.5 billion each year to meet the standards, which won't take effect until at least 2016. "We appreciate EPA's thoughtful consideration of these rules and willingness to make sensible changes. While we need to review the rules for technical details, it appears that a number of improvements have been made," the American Chemistry Council said.

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