9.—(1) A user shall not use premises for contained use unless the premises have been notified to the competent authority in accordance with this regulation.
(2) Before premises are used for contained use for the first time, a person responsible for the contained use shall—
(a)submit a notification to the competent authority containing the information specified in Schedule 5; and
(b)have received an acknowledgement of receipt of the notification from the Executive.
(3) The Executive shall send an acknowledgement of receipt to the notifier within 10 working days of the competent authority receiving the notification.
(4) A single notification may include more than one premises.
(5) The notifier shall nominate one address which is to be the principal address for the purposes of a notification under paragraph (4).