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This report presents the findings of aquatic invertebrate surveys carried out in connection with plans to construct an Onshore Cable Route and Converter Station for the East Anglia ONE Offshore Windfarm. This report forms Appendix 24.10 to Volume 3, Chapter 24: Ecology and Ornithology of the Environmental Statement. The Onshore Cable Route runs from a landfall south-east of Ipswich, east of the River Deben near Bawdsey. The route then runs north-west towards Bramford to the west of Ipswich, a distance of approximately 37km. The Preferred Onshore Cable Corridor and Converter Station Refined Area of Search is shown in Figure 24.10.1.
The surveys involved sampling of a selection of ditches and watercourses crossed by the Preferred Onshore Cable Corridor. The surveys were carried out on the 11th and 12th June 2012 and provided an assessment of water quality and the aquatic invertebrate assemblages present, as well as a brief evaluation of the conservation status of each species.
1.2 Ecological Context
The Preferred Onshore Cable Corridor and Converter Station Refined Area of Search lies within a rural landscape in East Anglia. Much of the land crossed is arable farmland, but the Onshore Cable Route crosses hedgerows, field drains and ditches, as well as streams, coastal habitats and small areas of woodland. The Preferred Onshore Cable Corridor also crosses previously-developed land and the River Deben.
1.3 Structure of the Report
The remainder of the report is set out as follows: • • • •
Section 2 describes the survey and assessment methods; Section 3 presents the results of the surveys;
Section 4 provides the evaluation and conclusions; and Section 5 is the reference section.
East Anglia Offshore Wind Limited
East Anglia ONE Offshore Windfarm – Aquatic Invertebrate Survey 854188 (Rev 02)