66.
The landfall footprint lies within a statutory designated site (Bawdsey Cliffs SSSI) which could lead to significant impacts upon the site. Where the SSSI is to be crossed with haul roads and ramps, implementation of mitigation measures suggested within the chapter will reduce the significance of the impact tominor adverse. No statutory or non-statutory designated sites are crossed by the onshore cable route and the converter station.
67.
There are no soils of significant environmental value identified within the landfall. A number of potential contaminant issues have been identified within the study area. The onshore cable route passes across agricultural land which presents a low risk to the health and safety of construction workers. This is addressed further within the chapter.
68.
Three landfill sites encroach the onshore cable route at Culpho Hall, Bamford Dairy and Tuddenham St Martin. The exact content of the landfills is unknown and a variety of contaminants may be present with the potential to produce leachate and landfill gases. Minor adverse impact is anticipated during construction. Updated information on the landfill sites is currently being obtained from the Environment Agency and will be included in the final ES.
69. Operationally, where maintenance is required there is the potential for minor adverse impacts for the onshore cable route. With adherance to the mitigation outlined in the chapter and to be set out in an outline Code of Construction Practice (CoCP) submitted with the DCO application, it is anticipated that there would be a minor adverse to negligible residual impact on soil, geology and ground condition during operation.
70. 71.
It is anticipated that the impacts during decommissioning would be similar to those identified for construction although these are likely to be of lower magnitude.
Given that that the three proposed East Anglia Offshore Wind projects will not overlap in terms of construction, cumulative impacts are not considered to be greater than those assessed for construction.
30.3.2 Chapter 20 Air Quality 72.
Construction works associated with the onshore electrical transmission works have the potential to impact on local air quality conditions through emissions of dust, exhaust pollutants and of NO2 and PM10 from non-road mobile machinery (NRMM). The assessment was based on desk-top studies, utilising existing air quality data and required consideration of and data from the traffic and transport assessment. The mapped background concentrations of dust are 'well below' the annual mean PM10
Preliminary Environmental Information May 2014
East Anglia THREE Offshore Windfarm
Chapter 30 Summary and Conclusion Page 15
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