8. Where it appears to the Welsh Ministers that the environmental information already before them—
(a)is adequate to assess the environmental effects of the development which is the subject of the proposed action under section 141(2) or (3) of the 1990 Act, they must take that information into consideration in their decision;
(b)is not adequate to assess the environmental effects of the development, they must serve a notice seeking further information in accordance with regulation 24(1); and
regulations 14 to 17 and 19 to 28 of these Regulations apply to the applicant and application—
(i)as they apply to appellants and appeals in the case of—
(aa)a proposal to grant planning permission;
(bb)a proposal to revoke or amend the conditions attached to a planning permission; or
(cc)a proposal to direct that, if an application for planning permission were made, it must be granted; and
(ii)as they apply to the initiating body and a proposed section 97 order or a proposed section 102 order in the case of—
(aa)a proposal to revoke or amend conditions attaching to such an order; or
(bb)a proposal to amend such an order; and
(iii)as if references to the “relevant planning authority” were to the local planning authority who would determine any application for planning permission for the development in question were such an application to be submitted.