25 Pa. Code § 86.38
(a) An application for a permit or revision which proposes to use an existing structure in connection with or to facilitate the proposed activities will not be approved unless the applicant demonstrates and the Department finds, in writing, on the basis of the information set forth in the complete application that:
(b) Noncomplying existing structures shall be modified or reconstructed within 6 months after issuance of the permit; however, the Department may approve a longer period if the applicant demonstrates that:
The provisions of this § 86.38 adopted December 19, 1980, 10 Pa.B. 4789, effective July 31, 1982, 12 Pa.B. 2382; amended July 30, 1982, effective upon the granting of primary jurisdiction to the Commonwealth of Pennsylvania by the Secretary of the United States Department of Interior, 12 Pa.B. 2473, effective July 31, 1982, 12 Pa.B. 2382; amended February 17, 1984, 14 Pa.B. 524, effective August 4, 1984, 14 Pa.B. 2860. Immediately preceding text appears at serial pages (72002) to (72003).