Colorado air regulators adopted new safety thresholds for five toxic air contaminants on Friday, marking the latest step in a multiyear regulatory process to protect neighborhoods from pollutants.
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The lack of clarity was a major point of complaint in comments from industry groups. In testimony before the commission, Dave Kulmann, a lobbyist for the Colorado Chamber of Commerce, noted it was impossible to understand the economic impacts of the standards without a clear enforcement plan.
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