In addition to any other remedies provided for in this act, an action in equity may be filed in the court of appropriate jurisdiction for an injunction to restrain any violation of this act, the rules and regulations, or any order of the department issued under this act, or to restrain any public nuisance or condition which may be detrimental to the health or safety of seasonal farm laborers or their families. In any such proceeding, the court shall, upon motion of the plaintiff, issue a mandatory preliminary injunction if it finds that the defendant is engaging in conduct prohibited by this act, has failed to comply with an effective order of the department or the conditions of a permit issued under this act, or is maintaining a condition which is causing immediate and irreparable harm to seasonal farm laborers or their families. In addition to granting relief in equity, the court in any proceeding under this section shall have jurisdiction to assess civil penalties as provided for in section 306.¹