Article 6 Power to deviate
In constructing or maintaining any of the scheduled works, the undertaker may—
(a)
deviate laterally from the lines or situations shown on the works plans within the limits of deviation for that work shown on those plans, and
(b)
deviate vertically from the levels shown on the sections—
(i)
to any extent not exceeding 1 metre upwards in respect of the works described as Work No. 3 in Schedule 1 and 2 metres upwards in respect of the remainder of the works described in Schedule 1, or
(ii)
to any extent downwards.