9.—(1) The outline planning zone shall be determined by the Executive following discussion with the operator
(2) The operator and the Executive may agree that the site has no outline planning zone.
(3) The planning to be arranged by the Executive in relation to the outline planning zone shall be commensurate to the risk of a radiation emergency affecting that area, and the off-site emergency plan required under regulation 11 shall clearly set out when that plan would be brought into effect in relation to the outline planning zone.