21.—(1) Where hazardous waste is produced at, or removed from, any premises other than exempt premises, the premises must be notified to the Agency in accordance with the requirements of this Part.
(2) Premises duly notified to the Agency in accordance with this Part are notified premises for the purposes of these Regulations for the period of twelve months (“the period of notification”) commencing at the effective time and ending at the end of the last day of that twelve month period.
(3) It is the duty of a hazardous waste producer to notify the relevant premises in accordance with regulations 24 and 26 if they have not otherwise already been notified.
(4) Without prejudice to paragraph (3), a consignor may, in the circumstances described in regulation 25, notify the site premises in accordance with that regulation and regulation 26.