Section 52.2383 - Visibility protection(a) The requirements of section 169A of the Clean Air Act are not met because the plan does not include approvable procedures meeting the requirements of 40 CFR 51.305 and 51.307 for protection of visibility in mandatory Class I Federal areas.(b) Regulations for visibility monitoring and new source review. The provisions of § 52.27 are hereby incorporated and made part of the applicable plan for the State of Vermont.51 FR 5505, Feb. 13, 1986, as amended at 82 FR 3129 , Jan. 10, 2017