to change the significance of the impacts presented In the PEIR for Scenario 1, therefore a detailed assessment is required before a definitive statement can be made. However, the total peak daily HGV movement for LFAC single phase of 292 two – way HGV movements and a workforce of 175 is lower than the figures presented in the PEIR for Scenario 2 (510 daily two-way HGV movements, and 305 daily workforce two-way HGV movements).
52.
It is therefore, concluded that the updates to the project design have the potential to increase the magnitude of effects but the resultant impacts are unlikely to increase fromthose identified within the PEIR as assessed under Scenario 1.
4.1.2.2 Landscape and Visual Amenity 53.
54.
The main project design updates considered as part of Phase III Consultation that have the potential to influence landscape and visual amenity are:
Removal of Scenario 2 (trenching);
Adoption of the LFAC electrical solution; and Introduction of Phasing.
The Two Phased LFAC electrical solution represents the worst case for landscape and visual amenity, as the size of the substation compound would increase to 3.04ha compared to the 2.61ha HVDC converter station that was previously assessed within the PEIR. The East Anglia THREE substation compound would be readily visible from a number of viewpoints and sections of Public Rights of Way. Mitigation planting (planted by East Anglia ONE) would gradually reduce the magnitude of change as it grows to screen visibility of the converter station as seen from the majority of the viewpoints. The level of impact significance would decline over the 25 year consent period.
55.
As a result of Phasing, there is an increase in the duration of onshore construction works for the substation compound and cable installation for the Two Phased approach. The longer construction period will not increase the magnitude of change or the significance of the impacts on landscape character or visual amenity, but will increase the duration of those impacts over a limited additional period of time.
56.
It is therefore concluded that the updates to the project design have the potential to increase the magnitude of effects but the resultant impacts will not have increased from those identified within the PEIR.
Phase III Report June 2015
East Anglia THREE Offshore Windfarm Page 37
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