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Regional Haze

Regional Haze State Implementation Plan

Colorado has developed a federally-required Regional Haze Plan over the past several years. The plan was approved by the Air Quality Control Commission in January 2011.


The EPA published the official approval in the Federal Register on December 31, 2012, with an effective date of approval of January 30, 2013.



 Plan and Background



For more information, contact:


Curt Taipale