7.—(1) In a case where—
(a)regulation 6(1) or (2) applies; and
(b)the Agency considers that there is a significant risk of pollution of controlled waters from the entry of the oil in question into those waters if steps are not immediately taken to minimise that risk,
the Agency may serve notice on the person having custody or control of that oil requiring him to carry out such works, take such precautions or such other steps as, in the opinion of the Agency, are appropriate for minimising that risk having regard to the requirements of regulations 3 to 5.
(2) The notice shall—
(a)specify or describe the works, precautions or other steps which the person is required to carry out or take;
(b)state the period within which any such requirement is to be complied with; and
(c)inform him of his rights under regulation 8.
(3) The period for compliance shall be such period as is reasonable in the circumstances and shall not in any case be less than 28 days.
(4) The Agency may at any time—
(a)withdraw the notice;
(b)extend the period for compliance with any requirement of the notice;
(c)with the consent of the person on whom it is served, modify the requirements of the notice,
and shall do so if so directed by the Secretary of State under regulation 8(4).