Power to deviate
4. In carrying out the works authorised by article 3 (power to construct works) CMAL may deviate laterally from the lines or situations of those works as shown on sheet 4 to any extent not exceeding—
(a)in respect of Work No. 1, the limits of deviation so shown by a dashed line coloured red,
(b)in respect of Work No. 2, the limits of deviation so shown by a dashed line coloured partly brown and partly brown and green,
(c)in respect of Work No. 3, the limits of deviation so shown by a dashed line coloured blue,
(d)in respect of Work No. 4, the limits of deviation so shown by a dashed line coloured partly green and partly green and brown, and
(e)may deviate vertically from the levels of the works as shown on the deposited sections or elevations to any extent not exceeding 3 metres upwards and to such extent downwards as may be found necessary or convenient.