CFR›Title 18›Chapter I›Part 157›Subpart B ContainsSections 157.30–157.39CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Subpart B—Open Seasons for Alaska Natural Gas Transportation Projects Sections 157.30 § 157.30 Purpose. 157.31 § 157.31 Definitions. 157.32 § 157.32 Applicability. 157.33 § 157.33 Requirement for open season. 157.34 § 157.34 Notice of open season. 157.35 § 157.35 Undue discrimination or preference. 157.36 § 157.36 Open seasons for expansions. 157.37 § 157.37 Project design. 157.38 § 157.38 Pre-approval procedures. 157.39 § 157.39 Rate treatment of pipeline expansions. SourceOrder 2005, 70 FR 8286, Feb. 18, 2005, unless otherwise noted. Previous A Subpart A—Applications for Certificates of Public Convenience and Necessity and for Orders Permitting and Approving Abandonment under Section 7 of the Natural Gas Act, as Amended, Concerning Any Operation, Sales, Service, Construction, Extension, Acquisition or Abandonment Next D Subpart D—Exemption of Natural Gas Service for Drilling, Testing, or Purging from Certificate Requirements