(a) For any region of the state, the boundaries of which are determined by the commissioner by regulation, in which the department is required to review and approve an oil discharge prevention and contingency plan submitted by a person under AS 46.04.030, the department shall prepare, annually review, and revise as necessary a regional master oil and hazardous substance discharge prevention and contingency plan.
(b) The provisions of AS 46.04.200(b) and (c) apply to preparation and review of a regional master plan under this section.
(c) In setting boundaries under (a) of this section, the department shall, when possible, group together communities that are likely to require coordination of their efforts to respond effectively to a discharge.