East Anglia ONE Offshore Windfarm Construction Artificial Lighting Emissions Plan


September, 2016


6 Mitigation 6.1 Background 65.


The onshore construction works have been carefully designed to reduce the potential for significant impacts and to minimise impacts on the environment and include a series of embedded mitigation measures. These have been adopted as part of the project design to avoid or minimise potential impacts from artificial lighting, relating to construction, on the sensitive receptors are summarised in Table 6-1.


Table 6-1 Embedded Mitigation Measures Construction Mitigation Measures


Onshore Cable Route


No 24hr lighting except at CCSs and for specific work activities which have been agreed with the Local Planning Authority, which may include HDD or where night time road closures/working is required.


Careful routeing of the onshore cable route to avoid key areas of sensitivity (e.g. near Howes Farm, meadows near Martlesham Hall, Fynn Valley).


Where possible, night-time working during open trenching of watercourses would be minimised.


Pre-construction surveys for protected species and Schedule 1 birds.


Where HDD is used to cross the Deben Estuary and Martlesham Creek mitigation measures in the Ecological Mitigation Plan for the Deben Estuary Special Protection Area (SPA) non-breeding birds and Schedule 1 breeding birds will be applied.


Onshore Substation


Careful siting of the onshore substation compound to the north of the existing Bramford substation to gain maximum benefit from the screening effect provided by existing woodland.


Directional lighting or shields during Autumn (August to October). Pre-construction surveys for protected species and Schedule 1 birds.


Substation to be constructed on lowered ground levels.


Limited 24 hour lighting at substation compound site during particular construction activities (concrete pours, etc.).


Minimise Impact. Minimise Impacts on bats.


To ensure mitigation is based on up to date survey data.


Minimise Impact. Minimise Impact.


Minimise light pollution and disturbance to ecological receptors.


Avoidance of impact. Minimise Impact on otters.


To ensure that mitigation is based on up to date survey data.


Avoid significant disturbance to breeding and non-breeding birds.


Rationale


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