preclude a meaningful quantitative assessment, and it is not appropriate to make assumptions about the detail of future projects in such circumstances.


83.


The tiered approach adopted is analogous to that outlined by JNCC and Natural England for ornithology interests. The definition of the tiers and impacts considered within the CIA was agreed with Natural England at ETG meeting 2 and 3, and is provided in Appendix 12.1. For marine mammals the tier of projects considered in the CIA is outlined in Table 12.11.


Table 12.11: Tiers in relation to project category which have been screened into the CIA Project category


UK Other offshore windfarms


Other renewable developments (tidal and wave)


Aggregate extraction and dredging


Oil and Gas installations (including surveying)


Navigation and shipping


Planned construction sub-sea cables and pipelines


Licenced disposal sites Potential port and harbour developments


12.4.5 Transboundary impact assessment 84.


Tier 1,2,3,4,5 Tier 1,2,3,4,5


Tier 1,2,3 Tier 1,2,3


Tier 1,2,3 Tier 1,2,3


Tier 1,2,3 Tier 1,2,3


Other


Tier 1,2,3 Tier 1,2,3


Screened out Screened out


Screened out Screened out


Screened out Screened out


The potential for transboundary impacts will be addressed by considering the reference populations and potential linkages to non-UK sites as identified through telemetry studies.


85.


The assessment of the effect on the integrity of the transboundary European sites as a result of impacts on the designated grey seal and harbour porpoise populations has been undertaken and presented in the HRA Screening Report which has been informed by the assessment of impacts on the North Sea populations of harbour seal, grey seal and harbour porpoise presented in this chapter.


Preliminary Environmental Information May 2014


East Anglia THREE Offshore Windfarm


Chapter 12 Marine Mammal Ecology Page 38


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