N.Y. Comp. Codes R. & Regs. tit. 16, § 85-2.1
(e) The term facility or transmission facility means:
(1) an electric transmission facility (including associated equipment) with a design capacity of:
(2) a fuel gas transmission line extending a distance of 1,000 feet or more, to be used to transport fuel gas at pressures of 125 pounds per square inch or more, excluding appurtenant facilities.
The term facility or transmission facility does not include any electric transmission line located wholly underground in a city with a population in excess of 125,000, or a primary transmission line (as such term is used in the Federal Power Act [16 U.S.C. 791—a-828c]) approved by the Federal Energy Regulatory Commission in connection with a hydroelectric facility or any fuel gas transmission line that is located wholly underground in a city or wholly within the right-of-way of a state, county or town highway or village street (as those terms are defined in article 1 of the Highway Law and article 6 of the Village Law), or that replaces an existing transmission line, including appurtenant facilities, and extends a distance of less than one mile.
As used in this Subchapter, other than in Subpart 85-1 of this Part: