144. It is not deemed that other site or off-site mitigation is required for receptors expected to experience minor impacts, due to the small exceedance of the construction noise ‘limit’ and the relatively short duration of the impact.
145. CCSs will be established close to the landfall, along the cable route and for the converter stations. The CCSs will generally be used for storage of materials, equipment and plant. The selected CCS locations are not in the immediate vicinity of residential properties. As such, it is considered that they will not result in any significant construction noise affecting receptors and will therefore have a negligible effect.
Impact 3: Increased noise on residential receptors during converter station construction 146. Under both Scenario 1 and 2 a new converter station will be constructed feeding into the National Grid at the nearby Bramford national grid substation.
147. The construction of the converter station may involve the use of driven piles to provide suitable foundations for heavy transmission plant and the buildings required to enclose most elements of the converter station.
148. There are no properties within the construction noise impact buffer around the converter station, as outlined in Table 26.7 and shown on Figure 26.4. Therefore on- site construction works associated with the construction of the converter station under either scenario are predicted to result in an effect of negligible magnitude and therefore a negligible impact.
Impact 4: increased noise on residential receptors from off-site construction traffic noise 149. Table 26.24 shows the calculated increase in traffic flow on the road links identified by the transport assessment as carrying construction traffic (see Chapter 27 Traffic and Transport).
Table 26.24
Link ID
1 2 3
Link Description
A14
between the J51 and J52
A14
between the J52 and J53
A1156 south from J53
21,093 447 21,202 519 0.5 21,305 572 1.0 63,085 7,980 63,413 8,250 0.5 63,848 8,605 1.2 Construction traffic impacts
2018 Baseline flows AAWT
Total Vehicles
57,376
Total HGVs
5,973
2018 Baseline + Scenario 1
Total Vehicles
57,573
Total HGVs
6,129
Overall Increase
% 0.3
2018 Baseline + Scenario 2
Total Vehicles
57,839
Total HGVs
6,339
Overall Increase
% 0.8
Preliminary Environmental Information May 2014
East Anglia THREE Offshore Windfarm
Chapter 26 Noise and Vibration Page 38
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