(a) The Department's issuance of a permit does not prevent the Department from adopting or amending regulations which impose additional or more stringent requirements than those in existence at the time a permit is issued and does not prevent the enforcement of these requirements against the owner or operator of a permitted facility. As part of any formal rulemaking, the Department shall specify the manner in which a proposed regulatory change is intended to apply to facilities which have been issued a hazardous waste facility permit.

(b) Not withstanding subsection (a) above, the owner or operator of a facility which has been issued a hazardous waste facility permit shall comply with conditions of the permit as well as regulations adopted by the Department.

(c) The issuance of a permit does not convey any property rights of any sort, or any exclusive privilege.

(d) The issuance of a permit does not authorize any injury to persons or property or invasion of other private rights, or any infringement of State or local law or regulations.