10.16. Summary of Impacts, Mitigation, Likely Significant Effects and Monitoring

  1. Information on marine mammals within the marine mammal study area was collected through desktop review, site-specific surveys, and consultation. This information is summarised in Table 10.10   Open ▸ , Table 10.11   Open ▸ , and Table 10.12   Open ▸ .
  2. Table 10.65   Open ▸ presents a summary of the potential impacts, designed in measures and the conclusion of LSE1 in respect to marine mammals. The impacts assessed include:
  • Injury and disturbance from underwater noise generated during piling;
  • Injury and disturbance from underwater noise generated during UXO clearance;
  • Injury and disturbance due to site-investigation surveys (including geophysical surveys);
  • Injury and disturbance from underwater noise generated during vessel use and other noise producing activities;
  • Injury due to collision with vessels;
  • Effects on marine mammals due to emfs from subsea electrical cabling in the water column;
  • Injury and disturbance from underwater noise generated during the operation of floating wind turbines and anchor mooring lines;
  • effects on marine mammals due to entanglement associated with the array; and
  • Effects on marine mammals due to altered prey availability.
  1. Overall, it is concluded that there will be no LSE1 (after implementation of measures adopted as part of the Array and secondary mitigation) arising from the Array during the construction, operation and maintenance or decommissioning phases.
  2. Table 10.66   Open ▸ presents a summary of the potential impacts, designed in measures and the conclusion of LSE1 on marine mammals in EIA terms. The cumulative effects assessed include:
  • injury and disturbance from underwater noise generated during piling;
  • injury and disturbance from underwater noise generated during UXO clearance;
  • injury and disturbance due to site-investigation surveys (including geophysical surveys);
  • injury and disturbance from underwater noise generated during vessel use and other noise producing activities;
  • injury due to collision with vessels;
  • effects on marine mammals due to EMFs from subsea electrical cabling in the water column;
  • injury and disturbance from underwater noise generated during the operation of floating wind turbines and anchor mooring lines;
  • effects on marine mammals due to entanglement associated with the array; and
  • effects on marine mammals due to altered prey availability.
  1. Overall, it is concluded that there will be no likely significant cumulative effects from the Array (after implementation of measures adopted as part of the Array and secondary mitigation) alongside other projects/plans.
  2. No likely significant transboundary effects have been identified in regard to effects of the Array.

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Table 10.65:
Summary of Likely Significant Environmental Effects, Secondary Mitigation and Monitoring

Table 10.65: Summary of Likely Significant Environmental Effects, Secondary Mitigation and Monitoring


Table 10.66:
Summary of Likely Significant Cumulative Environment Effects, Mitigation and Monitoring

Table 10.66: Summary of Likely Significant Cumulative Environment Effects, Mitigation and Monitoring