4.—(1) The Department, after considering—N.I.
(a)any objections which are not withdrawn; and
(b)where a local inquiry is held, the report of the person who held the inquiry,
may make the order either without modification or subject to such modifications as it thinks fit.
(2) Where it proposes to make the order subject to modifications which will in its opinion make a substantial change in the order, the Department shall—
(a)notify any person who appears to it to be likely to be affected by the proposed modifications;
(b)give that person an opportunity of making representations with respect to the modifications within such reasonable period as it may specify; and
(c)consider any representations made to it within that period with respect to the proposed modifications.