22.—(1) With respect to the approved plans specified in Requirement 3(1), the parameters specified in Requirement 3(3) and any other plans, details or schemes which require approval by the relevant planning authority pursuant to any other Requirement (the “Approved Plans, Parameters, Details or Schemes”), the undertaker may submit to the relevant planning authority for approval any amendments to the Approved Plans, Parameters, Details or Schemes and following any such approval by the relevant planning authority the Approved Plans, Parameters, Details or Schemes are to be taken to include the amendments approved pursuant to this sub-paragraph.
(2) Approval under sub-paragraph (1) for amendments to the parameters identified in Requirement 3(3) above must not be given except where it has been demonstrated to the satisfaction of the relevant planning authority that the subject-matter of the approval sought does not give rise to any materially new or materially different environmental effects in comparison with the authorised development as approved (as identified in the environmental statement).