58.
The primary method of mitigation when dealing with the archaeological resource is the precautionary principle, based on the prevention of damage to receptors by proactively putting in place protective measures rather than attempting to repair damage (which may be irreversible) after it has occurred. To achieve this, embedded mitigation will be applied (see section 17.3.3 above).
59.
Potential impacts of the proposed East Anglia THREE project upon the setting of onshore cultural heritage assets are considered as part of the Chapter 25 Onshore Archaeological and Cultural Heritage chapter. Known heritage assets within the East Anglia THREE site are confined to wreck sites (A1s and A3s) and sites of potential anthropogenic origin and archaeological interest (A2s). Wrecks lost other than by design are not regarded as having a setting as their siting is based on chance alone. As such, potential impacts upon the setting of the maritime sites outlined in this assessment are regarded as negligible.
17.4.4 Cumulative Impact Assessment 60.
The cumulative impact assessment presented in this chapter was carried out in accordance with the methodology set out in Chapter 6 Environmental Impact Assessment Methodology and is based on available standards and guidance (COWRIE 2008 and Renewable UK 2013), best practice, consultation and on professional judgement.
61.
As defined for the purposes of this impact assessment, cumulative impacts are those which could occur as a result of the proposed project in conjunction with other, existing or planned offshore windfarms or other planned marine and coastal developments or activities. Cumulative impacts may therefore occur to archaeological receptors that have the potential to be incrementally impacted by other existing, consented and / or proposed developments or activities. These impacts maybe regarded individually as minor but collectively as significant. However, the emphasis is on the assessment of potentially significant impacts rather than on comprehensively cataloguing every conceivable impact that might occur.
62.
The assessment of cumulative impact upon archaeological receptors therefore considered whether impacts on a receptor could occur on a cumulative basis between the proposed project and other windfarmprojects, activities and plans in the area (either consented or forthcoming). Other known plans or projects considered as part of this cumulative impact assessment are outlined in section 17.7.
63.
Significant cumulative impacts are restricted to direct impacts upon the potential archaeological resource from the East Anglia THREE site and offshore cable corridor
Preliminary Environmental Information May 2014
East Anglia THREE Offshore Windfarm
Chapter 17 Offshore Archaeology Page 34
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