The Environmental Protection Agency (EPA) is approving State Implementation Plan (SIP) revisions submitted by the State of New Hampshire on August 9, 2011, and July 23, 2013. These SIP revisions establish rules for open burning and establish emission standards and operating practices for incinerators and wood waste burners that are not regulated pursuant to federal incinerator standards. We are also approving revisions to the definitions of "Incinerator" and "Wood Waste Burner," submitted by the State on July 23, 2013 and October 26, 2016, respectively. This action is being taken in accordance with the Clean Air Act.