Paragraph 51 I1

The undertaker must provide written notice to TWUL as soon as reasonably practicable if they intend to survey using ground intrusive methods within 5 metres laterally of the outside face of any apparatus. Upon receiving such notice, TWUL will determine if works under paragraphs 40(2) or 42(2) are necessary and the timescales in paragraphs 42(4) and 42(5) shall apply to such determination from the date of receipt of the notice.