# The Docklands Light Railway (Woolwich Arsenal Extension) Order 2004, Paragraph 3


(1) Before beginning to construct any specified work and again at the written request of the Agency following its completion, DLRL shall at its own expense and to the reasonable satisfaction of the Agency, conduct a survey of the condition of the river wall on each side of the River Thames so far as situated within 30 metres in each direction of the outermost extremity of that work or, in the case of Work No. 5, within 75 metres in each direction of the outermost extremity of that work and submit a report on their condition to the Agency.
(2) DLRL’s obligations under sub-paragraph (1) in relation to the north side of the River Thames shall be subject to DLRL obtaining all necessary consents and permissions to carry out the surveys, which it shall use all reasonable endeavours to obtain.
(3) If any defects are identified in the initial survey conducted pursuant to sub-paragraph (1), being defects which may be affected by the construction of the specified works, DLRL shall monitor the defects not less than once every four weeks, where tides permit, during the construction of the specified works in accordance with such reasonable requirements as the Agency may specify or, if the Agency reasonably requires having regard to the results of any such monitoring, at such lesser intervals as the Agency may specify.
(4) In addition to the survey and monitoring work carried out under sub-paragraphs (1) and (3), DLRL shall install and maintain monitoring equipment and carry out monitoring of drainage work structures to the reasonable satisfaction of the Agency for movement, including settlement, in all areas likely to be affected by any specified work. DLRL shall continue monitoring until such time as the Agency gives its written consent that the monitoring may cease, such consent not to be unreasonably withheld. For the purpose of monitoring settlement, DLRL shall establish survey pins in drainage work structures whose structural integrity may be at risk due to settlement from the construction of Work No. 1 or 5.
(5) DLRL shall immediately notify the Agency should the results of the monitoring indicate any of the following—
(a) settlement of 5 mm or more between consecutive readings;
(b) angular distortion in excess of 1/2,500;
(c) total settlement of any part of a drainage work in excess of 20 mm; or
(d) movement of defects in a drainage work such that damage greater than Degree 2 as specified in the Building Research Establishment Report No. CP 51/78 can be expected.
(6) Before beginning to construct any specified work above the surface of the bed of the River Thames and thereafter at two weekly intervals until its completion, or at such greater intervals as the Agency may agree (such agreement not to be unreasonably withheld) for the period following the completion of its foundation works, DLRL shall at its own expense and to the reasonable satisfaction of the Agency survey the levels of the foreshore within the Thames inlet and within 50 metres to the west and east of the Thames inlet at points agreed by the Agency, such agreement not to be unreasonably withheld, and submit a report on those levels to the Agency.
(7) If, during the construction of any specified work, any defects in the river wall deteriorate DLRL shall immediately cease the construction of those of the authorised works causing, or likely to be causing that deterioration, unless to do so could cause the defects to deteriorate further, and not re-commence the construction otherwise than in accordance with such reasonable requirements as shall be specified by the Agency as soon as reasonably practicable after it has been notified of the deterioration, which may include changes to working methods and the completion of mitigation works.
(8) The Agency will supply to DLRL within 28 days of any request (whenever made) copies of all plans, drawings, records and calculations relating to the manner of construction and condition of the river walls on each side of the River Thames that the Agency has in its possession or under its control.
(9) In exercising the powers of articles 15 and 30 in relation to the River Thames DLRL will not moor against the river wall on the south side of the River Thames, or on the foreshore adjacent to that wall more than two barges at any one time without the Agency’s consent.

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Source: https://www.legislation.gov.uk/uksi/2004/757/schedule/15/paragraph/3 (the official version)
Page: https://openlegislation.uk/docklands-light-railway-woolwich-arsenal-extension-order-2004/schedule-15/paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.