7.—(1) An application for hazardous substances consent shall not be entertained by the hazardous substances authority unless it is accompanied by which ever of certificates A to D set out in Form 5 is appropriate, signed by or on behalf of the applicant.
(2) The required notice referred to in certificates B and C of Form 5 shall, in the case of an application for hazardous substances consent, be a notice given on Form 6 and shall invite any owner on whom the notice is served to make representations on the application to the hazardous substances authority within 21 days of service of the notice.