A certificate purporting to be signed by the chief executive stating any of the following matters is evidence of the matter--
(a) a stated document is one of the following things made, certified and maintained, given, or issued under this Act--
(i) a decision;
(ii) a compliance notice;
(iii) a moratorium map, as in force for a stated day, or during a stated period;
(b) a stated document is a copy of, or an extract from or part of a document kept or made under this Act;
(c) on a stated day, or during a stated period, an exemption--
(i) was, or was not in force; or
(ii) was, or was not, subject to a stated condition.