A notice under section 15 (Notice of interference with certain pipes communicating with water network) of the Act about intending to do work on a pipe connected to a property service of not less than 50mm diameter must be accompanied by a scale plan—
(a) stating the address of the premises at which the work is to be done; and
(b) showing the position on the premises in which it is intended to lay the pipes and fix meters, plugs, stop taps, and other fittings to the pipes.