21.5.3 Designated Sites 75.
Three statutory designated sites are crossed by the onshore cable route (Figure 21.7). These are Bawdsey Cliff Site of Special Scientific Interest (SSSI), Deben Estuary Ramsar and Special Protection Area and SSSI and Suffolk Coast and Heaths Area of Outstanding Natural Beauty (AONB). Reference should be made to Chapter 23 Ecology for more detail on the designated sites. The Deben Estuary and Suffolk Coast and Heaths AONB are designated for their ecological interest and, in relation to this topic, wetland environments. Bawdsey Cliffs SSSI is designated under Earth Heritage for geological interests and therefore is not discussed further in this chapter (see Chapter 19 Soils, Geology and Ground Conditions for further information).
76. One non-statutory designated site known as Newbourne Springs (Grid Ref 6270, 2430) County Geodiversity Site (CGS) lies within the study area approximately 1km south of the onshore electrical transmission works. The site is part of a line of natural springs along the boundary of the Red Crag and London Clay where groundwater emerges all year round and feeds into the stream downgradient. The site is managed by the Suffolk Wildlife Trust.
77.
The Deben Estuary is considered of value at an international level, Suffolk Coast and Heaths is considered of value at a national level and Newbourne Springs is considered of value at a local level.
78.
Figure 21.7 shows the location of the designated sites in relation to the onshore electrical transmission works and study area.
21.6 Potential Impacts 79.
Reference should be made to Chapter 5 Description of the Development, for full details of the activities proposed during the construction phase. However, in summary, the activities considered likely to impact on water resource and flood risk are:
Scenario 1– ducts for the proposed East Anglia THREE would be installed during construction of the East Anglia ONE project, therefore during construction of East Anglia THREE the following works would be required:
o Installation of onshore cable including landfall joint transition bay and cable jointing locations – installation techniques include pulling cables through existing ducts;
Preliminary Environmental Information May 2014
East Anglia THREE Offshore Windfarm
Chapter 21 Water Resource and Flood Risk Page 31
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58