N.Y. Comp. Codes R. & Regs. tit. 6, § 559.1
(b) Section 559.6 of this Part applies to:
(c) As used in this Part:
(2) A “Bass Island” pool is a pool lying below the Tully horizon and above the base of the lowest Salina Group Salt horizon whose primary permeability results from faults or natural fractures, other than one in the Devonian shales as the department determines and other than one producing nonassociated gas with or without condensate, which is located in any of the following counties:
Allegany
Cattaraugus
Chautauqua
Erie
Genesee
Livingston
Steuben
Wyoming