In addition to any other remedy at law or in equity or under this act, the department or the Attorney General may apply for relief by injunction to enforce compliance with or to restrain violations of this act or any rule, regulation, permit condition or order made under this act. The remedy prescribed in this section shall be deemed concurrent or contemporaneous with any other remedy, and the existence or exercise of any one remedy shall not prevent the exercise of any other remedy.
52 P.S. § 3319