Project: A2953 Client: East Anglia Offshore Wind Limited Title:
East Anglia THREE– Navigation Risk Assessment 28 Cumulative and In Combination Effects
457. Cumulative and in-combination effects have been considered for the East Anglia THREE including the impacts on shipping and navigation arising from other proposed offshore wind developments and any the impacts arising from other marine activities or users of the sea.
458. Following assessment of the baseline it has been identified that the development of the East Anglia THREE site may have cumulative and/or in-combination effects with the navigational activity of other receptors. The following receptors have been identified which have the potential to create a cumulative effects.
• Other Offshore Wind Farms; • Recreational Craft ; • Marine Aggregate Dredgers; • Commercial Fishing; • Oil and gas developments • Port Operations; and • MOD Defence – Practice and Exercise Areas.
459. Projects and proposed developments were screened in to the assessment only where potential overlap between activities and receptors was identified.
460. Vessel transits were considered in detail as part of the baseline for the NRA therefore vessel traffic associated with marine aggregates dredgers, oil and gas support/standby transits, commercial fishing transits, recreational craft transits and MOD movements are effectively screened out of the cumulative section.
28.1 Cumulative Screening
461. Table 28.1 and Table 28.2 summarises the cumulative screening process and highlights projects and proposed developments within 10nm where a cumulative or in combination activity have been identified.
462. Cumulative impacts have been considered for shipping and navigation receptors, this includes other offshore developments, as well as in combination activities associated with other marine operations. However it should be noted that fishing, recreation and marine aggregate dredging transits have been considered as part of the baseline assessment and not therefore within the screening table.
463. Cumulative impacts are again considered within a 10nm buffer around the East Anglia THREE site but then extended where applicable to encompass vessel routeing. This includes consideration of transboundary offshore wind farm projects and shipping routes. However for a cumulative or transboundary wind farm to be considered in the cumulative routeing assessment a vessel route needs to be impacted (route through or in proximity to)
Date: Doc:
07.05.2014 A2539 East Anglia THREE Windfarm Appendix 15.1 Page: 181
www.anatec.com
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