(1) Unless permitted by this act or approved by an authority, any restrictions standards or prerequisites of a local government otherwise applicable to an authority and enacted after the effective date of this act shall not apply to an authority. This subsection is intended to prohibit special local legislation or ordinances applicable exclusively or primarily to an authority and not to exempt an authority from laws generally applicable to other persons or entities.

    (2) The powers conferred in this act upon any authority or local government shall be in addition to any other powers the authority or local government possesses by charter or statute. The provisions of this act apply notwithstanding any resolution, ordinance, or charter provision to the contrary.

    (3) This act shall be construed liberally to effectuate the legislative intent and the purpose of this act as complete and independent authorization for the performance of each and every act and thing authorized in the act, and all powers granted in this act shall be broadly interpreted to effectuate the intent and purposes of this act and not as to limitation of powers.