approximately 65km to the west. Greater Gabbard and Galloper are located approximately 16km and 15kmfrom the East Anglia THREE offshore cable corridor. As Scroby Sands and Greater Gabbard are operational there would not be an overlap of construction activities therefore there would be no impact upon them.
69.
Concerns were raised during application for consent for East Anglia ONE regarding the overlapping of the cable installation in both space and time for the Galloper Offshore Windfarm and East Anglia ONE Offshore Windfarm. These are presented in the East Anglia ONE EIA (East Anglia ONE Ltd 2012). The East Anglia THREE offshore cable corridor would join the East Anglia ONE cable route at an as yet undetermined location. Installation of the Galloper offshore export cables is likely to be completed prior to the East Anglia THREE offshore export cables, therefore it is unlikely that there will be temporal overlap, however potential for an overlap does exist.
70.
The East Anglia THREE export cables will need to cross both the Greater Gabbard and Galloper offshore export cables. The likely significance of this is discussed in construction Impact 3 (section 18.6.1.3) below.
71.
With regard to increased pressure on port facilities, it is not possible at this time to determine pathways for impact as the construction port(s) for East Anglia THREE have yet to be determined. Effects will be specific to the port(s) in question. In addition, part of the selection and procurement process for the port(s) chosen for the construction phase of the East Anglia THREE project will take into account capacities and schedules to determine feasibility of their being able to adequately resource the requirements of East Anglia THREE.
72.
Given the relatively large separation distance between East Anglia THREE and the other UK offshore wind farms (Table 18.11) as well as the limited spatial and temporal overlap, the sensitivity of the receptor and anticipated magnitude of impact during construction is considered to be negligible, therefore the significance of the impact is anticipated to be negligible.
18.6.1.2 Impact 2: Increased Burial of Existing Cables and pipelines 73. During construction, there is the possibility of increased burial of existing cables and pipelines from the deposition of suspended sediment created during the installation of foundations and inter-array cables (see Chapter 7 Marine Geology, Oceanography and Physical Processes).
74. However, the burial depths are not anticipated to be sufficient enough to cause any damage to existing cables and pipelines or to affect maintenance access for their
Preliminary Environmental Information May 2014
East Anglia THREE Offshore Windfarm
Chapter 18 Infrastructure and other users Page 26
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