12.—(1) Subject to paragraph (2), with effect from the date of commencement of Work No. 1 (electricity generating station), the section of the public right of way (being a claimed public bridle way) specified in Part 1 of Schedule 4 (public rights of way to be temporarily closed and permanently stopped up) and shown by a green dashed line on the public rights of way temporary closures and permanent stopping up plan is extinguished.
(2) The public right of way (being a claimed bridleway) specified in paragraph (1) must not be extinguished under this article unless the temporary bridleway specified in column (4) of Part 1 of Schedule 4 and shown in yellow on the works plan is first provided, to the reasonable satisfaction of the relevant planning authority.
(3) The temporary bridleway must be kept open and maintained by the undertaker until the completion and opening of a permanent replacement bridleway approved by the relevant planning authority.
(4) Subject to the provisions of this article, the undertaker may, in connection with the carrying out of the authorised development, temporarily close each of the public rights of way specified in column (2) of Parts 2 and 3 of Schedule 4 to the extent shown on the public rights of way temporary closures and permanent stopping up plan.