In Part 13 (Development by statutory undertakers) of Schedule 1 to the 1992 Order, after Class 43 insert–
Sewerage undertakings
(43A)
(1) Any development relating to sewerage by a sewerage authority or by a person authorised under section 3A of the Sewerage (Scotland) Act 1968 in relation to that development, being development not above ground level required in connection with the provision, improvement, maintenance or repair of a sewer, outfall pipe or sludge main or associated apparatus.
(2) Development is permitted by this class subject to the condition that not less than 28 days before the beginning of operations the sewerage authority or, as the case may be, the person authorised under section 3A of the Sewerage (Scotland) Act 1968 shall give notice in writing to the planning authority of its intention to carry out the development, identifying the land under which the development is to take place.