The Underground Storage Tank Regulations is relevant to all energy projects that will require the use and building of pipelines, underground storage of any sorts, and/or electrical equipment. The term Underground Storage Tank (UST) does not include any pipe facility (including gathering lines) regulated under: The Natural Gas Pipeline Safety Act of 1968 (49. U.S.C. App. 1971), The Hazardous Liquid Pipeline Safety Act of 1979 (49 U.S.C. App. 2001), an intrastate pipeline facility regulated under state laws comparable to this these. These are a comprehensive set of siting, permitting, and environmental regulations which set limitations on where UST can be placed, and how they must be maintained and by whom.