# The A122 (Lower Thames Crossing) Development Consent Order 2025, Paragraph 5

Extent: E+W

(1) In this licence, “authorised development” means construction, alteration, improvement, maintenance, operation and decommissioning of those parts of each of the following works to the extent that such works constitute licensable marine activities—
(a) the construction and decommissioning of the drainage pipeline and outfall, during the construction phase, from the northern tunnel entrance compound which may include—
(i) a buried pipe within the foreshore and a outfall structure at the discharge point that would terminate in a precast outfall or diffuser head on the subtidal riverbed slope and would be with a length of 400m and a maximum diameter of 1m; and
(ii) any works ancillary to these works;
(b) the construction of the operational discharge, during the tunnel operation, from the northern tunnel portal site which may include—
(i) an outfall structure located at mean high water including the installation of a flap valve type outfall structure; and
(ii) any works ancillary to these works;
(c) the construction of the water inlet at Coalhouse Point which may include—
(i) a water inlet with self-regulating valve structure below mean high water in a new section of flood defence wall;
(ii) a piled coffer dam (10m x 15m) within a defined working area 50m x 35m on the intertidal zone; and
(iii) any works ancillary to these works.
(2) The grid coordinates for the area of the river Thames within which the undertaker may carry out licensed activities specified under paragraph (1) are located at—
(a) in relation to the drainage pipeline and outfall referred to at paragraph 5(1)(a) during the construction phase, from the northern tunnel entrance compound—
Structure
Point
ETRS89 (decimal degrees)
Latitude
Longitude
Outfall
Centre
51.454111
0.413873
Discharge pipeline working area
North west
51.455923
0.412713
North east
51.456074
0.41339
South west
51.452263
0.415053
South east
51.452175
0.414348
(b) in relation to the operational outfall referred to at paragraph 5(1)(b) during the tunnel operation, from the northern tunnel portal site—
Structure
Point
ETRS89 (decimal degrees)
Latitude
Longitude
Outfall
North west
51.45592
0.414477
North east
51.45601
0.414733
South west
51.45585
0.414527
South east
51.45593
0.414782
(c) in relation to the water inlet at Coalhouse Point referred to at paragraph 5(1)(c)—
Structure
Point
ETRS89 (decimal degrees)
Latitude
Longitude
Water inlet
North west
51.45869
0.426321
North east
51.458851
0.426999
South west
51.458387
0.426455
South east
51.458553
0.427135

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Source: https://www.legislation.gov.uk/uksi/2025/462/schedule/15/paragraph/5 (the official version)
Page: https://openlegislation.uk/a122-lower-thames-crossing-development-consent-order-2025/schedule-15/paragraph-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.