the Construction Consolidation Site, means that these would both be readily apparent to walkers.
48.
Taking these factors into account, the magnitude of change on views from the Suffolk Coast Path as a result of the landfall location construction, would be medium to high within a localised section of approximately 100m. With distance from the landfall location, the magnitude of change would decrease gradually from medium through to negligible.
49.
The significance of the impact of the landfall location construction on the Suffolk Coast Path would be significant during the short-term duration of the construction works and over the limited area approximately 100m either side. The impact on the remaining sections would be not significant.
29.7 Scenario 2: Impacts of Onshore Cable Route Construction 50.
The construction of the onshore cable route involves two methods of construction; open-cut trenching, laying the cable in the trench, or horizontal directional drilling (HDD) and pulling the cable through ducts. It is assumed that in scenario 2 that the majority of the 37km route would be constructed using open-cut trenching. This assumes a working width of 55m along the majority of the route, with a reduced width of 35m used through hedgerows, woodlands and water crossings. As each section of cable is assumed to be 500m in length, jointing pits would be needed at approximately every 500m where a connection is required. These comprise a box 5m deep x 10m long x 5m wide set 0.5 – 5m below ground level, covered over and accessed by either a kiosk or manhole cover. A permanent easement of 35m would be maintained where the onshore cable route crosses hedgerows and trees, although this allows for the replanting of hedgerows but not trees.
51. Where open-cut trenching is difficult for technical reasons, for example where road, rail or river crossings occur, or where there is a special sensitivity attached to the landscape, construction techniques such as HDD would be used. This enables the onshore cable route to be passed through ducts with no disturbance to the land above. HDD requires Construction Consolidation Sites at either end, which would be used to accommodate a drilling rig and associated machinery, equipment, offices and working facilities. It is proposed that HDD would be used at eight locations (including at the landfall location) along the route.
52.
Embedded mitigation has been applied in the design of the onshore cable route to minimise the impacts of construction on specific landscape features. There are distinctive linear features such as flood defence dykes, wooded watercourses,
Preliminary Environmental Information May 2014
East Anglia THREE Offshore Windfarm Appendix 0 Example
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