Approval and Promulgation of Air Quality Implementation Plans; Maine; Oxides of Nitrogen Exemption and Ozone Transport Region Restructuring

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The EPA is announcing an extension of the public comment period on our proposed Approval and Promulgation of Air Quality Implementation Plans; Maine; Oxides of Nitrogen Exemption and Ozone Transport Region Restructuring (August 5, 2013). The EPA is extending the comment period that originally was scheduled to end on September 4, 2013. The extended comment period will close on October 3, 2013. The EPA is extending the comment period because of a request we received.