EPA is approving in part a State Implementation Plan (SIP) revision submitted by the State of New Hampshire on January 28, 2005. Specifically, EPA is approving a revision to New Hampshire's regulation Env-A 2703.02 for hot mix asphalt plants. This rule establishes and requires limitations on visible emissions from all hot mix asphalt plants. This revision is consistent with the maintenance of all National Ambient Air Quality Standards (NAAQS) in New Hampshire. This action is being taken under the Clean Air Act.