Potential Impact


Receptor Vessel interactions – ship strikes Harbour porpoise Grey and harbour seal


Vessel interactions – ducted propellers


Operation Underwater noise - turbines


Sensitivity High Negligible Grey seal and harbour seal High


Magnitude Negligible Low Negligible


Significance Mitigation mitigation.


Minor adverse


Negligible


Minor adverse


Harbour porpoise Medium Grey seal and harbour seal Low Underwater noise - vessels Harbour porpoise Medium Grey seal and harbour seal Low Impacts upon prey species


Harbour seal and harbour porpoise


Grey seal Vessel interactions – ship strikes Harbour porpoise


Preliminary Environmental Information May 2014


Medium Low High Low Low Low Low Low Low Negligible East Anglia THREE Offshore Windfarm


Minor adverse


Minor adverse


Minor adverse


Minor adverse


Minor adverse


Minor adverse


Minor adverse


None None None None None


Residual Impact Minor adverse Negligible Minor adverse


None


Minor adverse Minor adverse Minor adverse Minor adverse Minor adverse Minor adverse Minor adverse


Appendix 30.1 Summary Tables Page 14


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