3.—(1) In these Regulations—
(a)“sensitive area” means an area of water which the Department has identified in accordance with the criteria set out in Part 1 of Schedule 1, and which is shown as such on maps held by the Department for the purposes of this regulation;
(b)“high natural dispersion area” means an area of water which the Department has identified in accordance with the criteria set out in Part II of Schedule 1, and which is shown as such on maps held by the Department for the purposes of this regulation.
(2) The Department shall review the identification of sensitive areas and high natural dispersion areas, in accordance with the relevant criteria in Schedule 1, no later than 31st December 1997 and thereafter at intervals of no more than 4 years.
(3) Where, following a review under paragraph (2) an area of water becomes or ceases to be identified as a sensitive area or a high natural dispersion area the Department shall substitute such further maps as may be necessary to reflect the changes in identification.