7 Pa. Code § 138l.12
An owner or a group of owners of land are eligible to propose the creation of an ASA if the following conditions are met:
(4) If tax parcel numbers or accounts reflect that a parcel is not contiguous to other land included in the proposal, that tax parcel or account is at least one of the following:
This section cited in 7 Pa. Code § 138l.21 (relating to effective date of the creation or modification of an ASA); 7 Pa. Code § 138l.41 (relating to removing land that has been in an ASA for 7 years or more); and 7 Pa. Code § 138l.42 (relating to removiing land in the course of the 7-year review or an interim review).