(a) A civil action for injunctive or other equitable relief for violation of an environmental covenant may be maintained by:
(1) A party to the covenant;
(2) The Department or,
(3) Any other person to whom the covenant expressly grants power to enforce;
(4) A person whose interest in the real property or whose collateral or liability may be affected by the alleged violation of the covenant; and
(5) A municipality or other unit of local government in which the real property subject to the covenant is located.
(b) This act does not limit the regulatory authority of the Department under law other than respect to an environmental response project.
(c) A person is not subject to liability for environmental remediation solely because it has the right to enforce an environmental covenant.