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Clean Air Markets

January 2015 Memo and Information

In January, 2015, EPA issued a memo that will help states as they develop State Implementation Plans to address cross-state transport of air pollution for the 2008 ozone standards. This memo summarizes:  

  • Proven approaches used to address transport for previous ozone standards
  • Results of EPA's preliminary air quality modeling data that characterizes ozone transport.

Files and Documents