Paragraph 8

The undertaker must not in the course of constructing any specified work or protective work or otherwise in connection with such works do or permit anything which may result in the deposit of any polluting materials on, in or over the Canal and must take such steps as the engineer or the harbour master may reasonably require to avoid or make good any breach of its obligations under this paragraph.

Nothing in article 21 (discharge of water) authorises the undertaker to discharge (directly or indirectly) surface drainage water into the Canal except that with the written consent of the authority the undertaker may discharge water directly into the Canal.

The undertaker must not in the course of constructing any specified work or protective work or otherwise in connection with such works do or permit anything which may result in the deposit of any other materials in the Canal and must take such steps as the engineer or the harbour master may reasonably require to avoid or make good any breach of its obligations under this paragraph except that with the written consent of the authority the undertaker may deposit any other materials into the Canal.

Any consent of the authority required under this paragraph must not be unreasonably withheld or delayed and may be given subject to such terms and conditions as the authority may reasonably require.