(1) The general manager must keep the authority's seal in the general manager's custody.
(2) The seal may be attached to a document by the general manager only--
(a) by resolution of the board; and
(b) in the presence of the chairperson or, if the chairperson is absent, the deputy chairperson.
(3) Judicial notice must be taken of the imprint of the authority's seal attached to a document.
(4) A document with the authority's seal attached to it may be presumed to be properly made.