3.—(1) The Nominated Undertaker may construct and maintain the scheduled works.
(2) Subject to article 4 (power to deviate), the scheduled works may only be constructed in the lines or situations shown on the deposited plans and in accordance with the levels shown on the sections.
(3) Subject to paragraph (5), the Nominated Undertaker may carry out and maintain such of the following works as may be necessary or expedient for the purposes of, or for purposes ancillary to, the construction of the scheduled works, namely—
(a)works for the strengthening, alteration or demolition of any building or structure;
(b)works to alter, or alter the position of apparatus, including mains, sewers, drains and cables;
(c)works to erect and construct such offices and other buildings, yards, slab, cranes, grabs, weighbridges, plant and machinery, apparatus, and other works and conveniences;
(d)make, provide and maintain all such bridges, approaches, lifts, roadways, walkways, ramps, retaining structures, means of access, shafts and stages;
(e)railway lines, electrification and signalling works and telecommunications works;
(f)works to alter the course of, or otherwise interfere with watercourses;
(g)landscaping, environmental and other works to mitigate any adverse effects of the construction, maintenance or operation of the scheduled works; and
(h)works for the benefit or protection of land or premises affected by the scheduled works.
(4) Subject to paragraph (5), the Nominated Undertaker may carry out such other works (of whatever nature) as may be necessary or expedient for the purposes of, or for purposes ancillary to, the construction of the scheduled works, other than works that would interfere with a navigable watercourse.
(5) Paragraphs (3) and (4) only authorise the carrying out or maintenance of works—
(a)within the limits of deviation; or
(b)on land specified in columns (1) and (2) of Schedule 2 (acquisition of certain lands for ancillary works) for the purposes specified in column (3) of that Schedule in relation to that land.