Impact


Impact 4: increased noise on residential receptors from off-site construction traffic noise


Key design parameters forming worst case scenario


Construction vehicle access routes Scenario 1


 Construction, use and removal of up to 16.1km of temporary haul road to be used during cable and duct installation


 Limited creation of access or track upgrading work


 Limited additional vehicles accessing cable pulling sites


 Using existing laneway systems  See Table 26.8 for total vehicle movements


Scenario 2


 Construction, use and removal of 32.84km of temporary haul road to be used during cable and duct installation


 See Table 26.8 for total vehicle movements


Operational Impacts


Impact 1: increased noise on residential receptors at the landfall and along the onshore cable route


Impact 2: increased noise on residential receptors from the converter stations operating concurrently at 100% capacity


Both Scenarios


Occasional maintenance visits may be required at transition and jointing pits (up to 1 visit per pit per annum)


Scenario 1


Operational noise from the concurrent operation of East Anglia ONE and East Anglia THREE converter stations


Scenario 2


Operational noise from East Anglia THREE converter station


Decommissioning Impacts


Impacts on future residential receptors


Both Scenarios


 Impacts arising from decommissioning are anticipated to at the same or lower level of environmental impact to those of the construction phase


The onshore elements of the East Anglia THREE project will be subject to a decommissioning plan


Operational noise impact.


Rationale


Sensitive receptors located adjacent to construction traffic routes


Preliminary Environmental Information May 2014


East Anglia THREE Offshore Windfarm


Chapter 26 Noise and Vibration Page 5


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