(1) Subject to this section, a Joint Authority may, by writing, delegate to an officer or employee of a State or of an authority of a State any of its powers under this Act, other than its powers under sections 18 and 20.
(2) Without limiting the operation of subsection (1), a delegation may be expressed as a delegation to the person from time to time holding, or performing the duties of, a specified position or office in the service of a State or an authority of a State or under the law of a State.
(3) A delegate of a Joint Authority is, in the exercise of his or her delegated powers, subject to the directions of the Joint Authority.
(4) A delegation of a power under this section:
(a) may be revoked, by instrument, by the Joint Authority (whether or not constituted by the persons constituting the Joint Authority at the time the power was delegated); and
(b) continues in force despite any change in the membership of the Joint Authority.
(5) A certificate signed by a member of a Joint Authority stating any matter with respect to a delegation of a power under this section by the Joint Authority is prima facie evidence of that matter.
(6) Nothing in this Part is intended to prevent the delegation by a Joint Authority, in accordance with the law of a State, of powers conferred on the Joint Authority by the law of that State.