their scarcity value and the greater care required to fully reinstate these types of grassland back to their original state.
58. Mitigation measures for such ecologically sensitive areas of grassland are detailed in Chapter 23 Ecology. These comprise reinstatement by use of turfing which would take 2-4 years to become fully established or by use of specialist soil handling and re- seeding which would take five years or more. While re-instatement would take some time, the actual area affected is relatively small as only short sections of these grasslands are crossed and only a 35m trench would be cut, which amounts to a small proportion of a more extensive grassland area. Taking all these factors into account the magnitude of change would be medium to low.
59.
The impact on these grasslands would be not significant owing to the localised extents of disturbance, the short-term duration of the impacts and the reversibility of the effects through the reinstatement of the vegetation.
29.7.1.3 Hedgerows and Hedgerow Trees 60. Hedgerows and hedgerow trees would be affected intermittently along the length of the onshore cable route. Hedgerows and hedgerow trees are a common feature of the rural landscape and in that respect there is little scarcity value attached. They are also relatively easy to reinstate, although would take 3-5 years to sufficiently infill gaps. Their sensitivity is, however, heightened by the valuable role they play in providing enclosure within the agricultural landscape and the notable contribution this makes to the overall character. They are also protected through statute. The sensitivity of the hedgerows is medium, and hedgerow trees is medium to high.
61. While embedded mitigation has reduced the amount of hedgerow and hedgerow tree removal through careful consideration of the routing, inevitably with the frequency and pattern of these linear features, a certain degree of removal would be necessary. The worst case scenario is assessed as a 35m open-cut trench where the onshore cable route would cross hedgerows and hedge trees.
62.
The magnitude of change would vary depending on the condition of the hedgerows and hedgerow trees through which the onshore cable route is passing. Where hedgerows are in poor condition with gaps already occurring, the magnitude of change would be medium to low, while where hedgerows are in good condition with no or few gaps the magnitude of change would be medium to high.
63.
The impact of the onshore cable route on hedgerows in good condition would be significant, albeit short-term in duration, lasting the construction period and into the operational stage until replanting becomes established. The impact of the onshore
Preliminary Environmental Information May 2014
East Anglia THREE Offshore Windfarm Appendix 0 Example
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