The Silvertown Tunnel Order 2018

Limits of deviation

5.—(1) Subject to paragraph (2), TfL must construct the authorised development within the Order limits and, so far as all non-linear works comprised in the authorised development are concerned, within the limits of deviation for those works shown on the works plans.

(2) In constructing or maintaining the authorised development, TfL may deviate—

(a) laterally within the Order limits in the case of any linear work comprised in the authorised development, so that the centre line of that work may be situated up to 3 metres either side of the centre line of that work shown on the works plans; and

(b) vertically from the levels shown on the engineering section drawings and plans—

(i) to any extent upwards not exceeding 0.5 metres except in relation to the parts of the authorised development referred to in column (1) of the table below, where the extent of permitted deviation for each such part is set out in column (2) of that table; and

(ii) to any extent downwards as may be found to be necessary or convenient.

(1) Part of authorised development

(2) Upwards vertical deviation limit

Work Nos. 1(a), 1(b), 1(c) and 1(e)

(1) Where any part of the authorised development referred to in column (1) is located below the bed of the river Thames, to any extent not exceeding 1.5 metres provided that the deviation would not result in the level of the bed within the navigable channel of the river Thames being above 5.80 metres below chart datum. (2) Where any part of the authorised development referred to in column (1) is located elsewhere, to any extent not exceeding 3 metres.

(3) Without limitation on the scope of paragraph (1), in constructing or maintaining the authorised development TfL may—

(a) deviate by up to 3 metres from the points of commencement and termination of any linear work comprised in the authorised development shown on the works plans; and

(b) deviate from the design of any tunnel or tunnel structure and vary the number of tunnel cross-passages shown on the engineering section drawings and plans.

(4) In this article, reference to—

(a) a “linear work” is a reference to any work shown on the works plans by way of a centre line; and

(b) a “non-linear work” is a reference to any other work shown on the works plans.