agricultural operations would be able to continue as normal, however it would not be possible to erect new structures, build roads or plant trees.
149. There is also the potential for the cables once buried, to reduce the root zone, thus physically restricting root growth immediately above their position. The principal root growth zone is generally accepted to be within the first 500mm of soil from the surface, although dependent on crop, soil type and characteristics and climate. Each cable trench would typically be excavated to a depth of 1.5m in order for the cables to be with the centre of the cable buried to 1.35m depth. This would give an approximate distance of 1m between the cables and the surface of the land.
22.6.2.1.1 Landfall and onshore cable route 150. The areas of land that would be affected by permanent easement restrictions have been minimised through the route selection process as described in Chapter 4 Site Selection and Alternatives.
151. At the landfall and along the onshore cable route agricultural land would be affected by permanent easement restrictions. The sensitivity of the receptor is considered to be mediumbecause a high proportion of the land is of grades 1 – 4 (and grade 3a at the landfall). The magnitude of the effect is considered to be low (Table 22.8) due to small area of land affected and the temporary nature of the impact (i.e. only when access is required). Therefore the impact significance is considered to beminor adverse at the local level.
152. Routine maintenance works would be required during the operational phase; however, this access would be via jointing pits or kiosks. Maintenance may include the excavation of soil in order to access the cables. It is anticipated that these events would be highly localised, temporary and of short duration. Jointing pits will be located be located away from watercourses and adjacent to field boundaries (avoiding rootzone) or roads and appropriate off-road vehicles would be used to access each of these. Overall a negligible impact is predicted.
153. In terms of potential impacts to the root growth zone, any impacts would be highly localised, immediately surrounding the cables / ducts themselves. This is considered to be negligible.
154. Discussions with landowners regarding potential future land uses and any restrictions on these will be undertaken as part of ongoing discussions between landowners and EATL.
Preliminary Environmental Information May 2014
East Anglia THREE Offshore Windfarm
Chapter 22 Land Use Page 45
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