Paragraph 14 I1

The promoter must not in the course of constructing any specified work or protective work or otherwise in connection with the works do or permit anything which may result in the pollution of the relevant part of the waterway or the deposit of materials in it and must take such steps as the engineer may reasonably require to avoid or make good any breach of its obligations under this paragraph; but this provision does not prevent the promoter from carrying out works within the relevant part of the waterway.