scenario for the background noise level in the likely area of the converter station. As low background noise levels have been measured, further monitoring of noise levels in the area are unlikely to determine a background noise level at any receptor that would change the noise limits recommended by this assessment.
Potential Impacts
108. The following assessments focus on the impact of predicted noise on residential receptors as these are considered to be the determining receptor when considering impact significance. Residences are generally the nearest type of receptor to the proposed construction works. Commercial and leisure facilities are of a lower sensitivity and therefore where these are closer than residences to aspects of the construction, the impact significance would be less.
109. Along the onshore cable route there are locations where users of Public Rights of Way (PRoW) could be affected by noise from construction works but this would be temporary as the user passes the works; please refer to Chapter 22 Land Use for amenity impacts upon PRoW.
110. Reference should be made to Chapter 5 Description of the Development, for full details of the activities proposed during the construction phase. However, in summary, the activities considered likely to generate a noise and vibration impact are:
Scenario 1 - Construction of onshore cable systems including landfall joint transition bay and cable jointing pits and pull-through of cables;
Scenario 2 - Construction of onshore cable systems including landfall joint transition bay and cable jointing pits – installation techniques include open cut trenching and horizontal directional drilling (HDD);
Construction of an onshore converter station, associated infrastructure and landscaping; and
Operational onshore converter station.
111. The two different construction scenarios (as outlined in section 22.3 and Chapter 5 Description of the Development) are considered separately, or grouped where there is considered to be no difference in impact between the different scenarios.
Preliminary Environmental Information May 2014
East Anglia THREE Offshore Windfarm
Chapter 26 Noise and Vibration Page 31
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