In the construction of the works the Council may deviate laterally to any extent not exceeding the limits of deviation shown on the deposited plan marked “The Central Regional Council (Allt Chreagain, Strathyre) Water Order 1987 Plan and Sections of Works” and they may also deviate vertically from the levels shown on the deposited sections to any extent:
Provided that—
no weir across a watercourse shall be constructed at a greater height above the general bed level than that shown on the said plan and 100 millimetres in addition thereto; and
except for the purpose of crossing a stream or watercourse, or of crossing any lands where the consent of all persons interested in those lands has been obtained, no pipe or other conduit or aqueduct shall be raised above the surface of the ground otherwise than in accordance with the said plan.