Paragraph 17 I1

The promoter must, upon completion of any part of any permanent specified work, remove as soon as practicable any temporary works constructed and materials for temporary works placed in, on, over or under the relevant part of the waterway in connection with that part of the specified work.

All temporary works must be removed to the reasonable satisfaction of the engineer, and in the construction, maintenance and removal of such works the promoter must not cause unavoidable detriment.