35 Pa. Stat. § 7130.311
When the regional facility is to be closed, the department shall require that the regional facility is properly decommissioned by the operator-licensee, that all remaining property is transferred to the Commonwealth and that control is transferred to the custodial agency. The cost of decommissioning shall be borne by the operator-licensee. The department shall make a determination that the site has been properly decommissioned and that the site, along with the license responsibilities, is suitable for transfer to the custodial agency, at which time the operator license shall be terminated. A decommissioning plan shall be submitted as part of the license application, be incorporated into the license and be periodically reviewed and amended as necessary over time.
35 P.S. § 7130.311