11.4 Control Measures: Watercourse crossings 133


There are 29 watercourse crossings along the Onshore Cable Route. These are detailed in the table below.


134 Where watercourses are proposed to be open cut, specific measures will be implemented to safeguard surface and ground water quality and to manage flood risk. These measures are described in Sections 11.5 and 11.6


135 As required by the Water Resources Act 1991, main river crossings will require Flood Defence Consent from Environment Agency. The following activities on a main river require Environment Agency consent under Section 109 of the Water Resources Act 1991:


136


The erection of any structure in, over or under a watercourse which is part of a main river, including temporary structures;


137 Structures located with the 9m easement of a Main River‟ or 7m of an „Ordinary Watercourse‟ would require consent for works affecting main river or ordinary watercourse and a flood risk management plan.


138


From the 6th of April 2012 local authorities have become responsible for issuing Flood Defence/Land Drainage consents for proposals affecting „Ordinary Watercourse‟, under the Land Drainage Act 1991.


139


In addition the Water Framework Directive (WFD) came into force in 2000. All new activities in or potentially affecting the water environment would need to consider the Directive. The WFD was transposed into law in England and Wales by the Water Environment (Water Framework Directive) (England and Wales) Regulations 2003. The WFD requires that Environmental Objectives be set for all surface and ground waters in England and Wales to enable them to achieve Good Status (or Good Ecological Potential for Heavily Modified and Artificial Water Bodies) by a defined date. A Water Framework Directive Compliance Assessment will be required for all applicable watercourses to ensure these Environmental Objectives are met.


140


The Onshore Cable Route also crosses various watercourses maintained by East Suffolk Internal Drainage Board. The methods and depths of drain crossings for new cables/ducts, and other works which may impact on such watercourses will need to be agreed prior to undertaking the works to ensure no adverse impact on local drainage or flood risk arises.


141


Table 4 below lists all water courses to be crossed by the project. Where a full WFD Compliance Assessment is required, this should demonstrate prior to the


Outline Code of Construction Practice . Version 3. Page 40


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