A civil action for injunctive or other equitable relief for violation of an environmental covenant may be maintained by: A party to the covenant; The Agency or, if it is not the Agency, the Department; Any person to whom the covenant expressly grants power to enforce; A person whose interest in the real property or whose collateral or liability may be affected by the alleged violation of the covenant; or The county or municipal corporation in which the real property subject to the covenant is located. This subtitle does not limit the regulatory authority of the Agency or the Department under law, other than this subtitle, with respect to an environmental response project. A person is not responsible for or subject to liability for environmental remediation solely because the person has the right to enforce an environmental covenant.