20.—(1) A hazardous substances contravention notice shall identify the land to which the notice relates, whether by reference to a plan or otherwise.
(2) The persons prescribed pursuant to section 162(4)(c) (hazardous substances contravention notice) are all persons having an interest in the land, being an interest which, in the opinion of the council, is materially affected by the notice.
(3) Every copy of a hazardous substances contravention notice served pursuant to section 162(4) shall be accompanied by a statement setting out—
(a)the council's reasons for issuing the notice;
(b)the right of appeal to the planning appeals commission against the notice, and the persons by whom, grounds upon which and time within which, such an appeal may be brought under section 143 (appeal against enforcement notice) as applied by regulation 21.