 Installation of up to four cables along 37km of the cable route (mostly via open trenching) with haul road along the entire length together with installation of up to eight ducts for cables from future projects (East Anglia THREE and East Anglia FOUR). Note that the haul road is a maximum of 32.84km as there are gaps for the HDD crossings.


 HDD for up to eight ducts at seven points along the route (the eighth HDD is at the landfall as discussed above).


 Removal of the haul road and reinstatement of land and features along 37km of the cable route.


329. Therefore for East Anglia THREE the following works are required at a later date:


 Creation of up to four jointing pits (assuming each cable jointed in its own pit) at up to 61 locations along the cable route.


 Transport to site, cable pulling and jointing at up to 244 jointing pits at up to 61 locations. Note that if ducts are used, shorter lengths of cable will have to be employed in order not to damage cables fromresistance to pulling cable through ducts. Therefore, for this Scenario more joints and hence jointing pits are required than if cables are installed directly into trenches.


 Temporary lay-down areas of 300m2 at each of up to 61 locations (assuming that one lay-down area serves both pits).


 Access via existing roads and tracks and therefore no haul road is required except for where joints are placed in remote areas. A maximum of 16.1km of 5.5m width haul road is required. Temporary track matting may be required if ground conditions are very poor.


 Construction Consolidation Sites – nine in total mostly on brownfield sites up to 10ha in total.


 Reinstatement of land.


330. The onshore cable route is approximately 75m in width except at the HDD locations where spacing of ducts will be wider. Except in these HDD locations, within the onshore cable route a working width of 55m will be required. Within this working width there will be space for any haul road, temporary laydown areas, jointing pits and temporary spoil storage.


Preliminary Environmental Information May 2014


East Anglia THREE Offshore Windfarm


Chapter 5 Description of the Development Page 73


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