Table 18.3 Worst Case Assumptions Impact
Construction
Impact 1: Impacts on other UK windfarms
East Anglia THREE site boundary
Wind turbines would be installed within the site boundary at as yet undefined locations, therefore the worst case scenario uses the entire area of the site which is approximately 305km².
Four offshore export cables
Impact 2: Increased burial of existing cables and pipelines
Four offshore export cables Cable installation by jetting
Impact 3: Interference and damage to sub-sea cables and pipelines
Impact 4: Disruption to aggregate extraction activity
Up to four offshore export cables East Anglia THREE site boundary
The maximum number offshore export cables for proposed East Anglia THREE project (therefore creating the maximum number of potential cable crossings) is four.
The maximum number of offshore export cables for the proposed East Anglia THREE project is four.
The worst case project parameters are those that have the greatest potential impact upon physical processes. See construction impact 5 (section 7.6.1.5) in Chapter 7 Marine Geology Oceanography and Physical Processes.
Damage caused to existing cables by East Anglia THREE construction activities.
Wind turbines will be located within the site boundary at as yet undefined locations; therefore the worst case scenario uses the entire East Anglia THREE site area which is approximately 305km².
Offshore cable corridor
At present it is not known where within the offshore cable corridor the export cables will be located, therefore in order to cover all potential scenarios it is assumed that up to four export cables may be placed anywhere within the
export cable corridor which covers an area of approximately 838km²
Key design parameters forming the realistic worst case scenario
Rationale
Preliminary Environmental Information May 2014
East Anglia THREE Offshore Windfarm
Chapter 18 Infrastructure and other users Page 7
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