The Deben Estuary, where it is crossed by the Preferred Onshore Cable Corridor east of Falkenham, and at Martlesham Creek, is a Ramsar site, SSSI and special protection area (SPA).
A comprehensive evaluation of ecological receptors is outside the scope of this report. 3.7 Initial conceptual site model
The information presented in the earlier sections of this report has been used to compile an initial conceptual site model (CSM). The identified potential sources of contamination and associated contaminants and receptors have been considered with plausible pathways that may link them. The resulting potential pollutant linkages are considered in Section 3.7.4 and Table 6. The risk classification has been estimated in accordance with information provided in Appendix C to this report.
3.7.1 Potential contamination sources
Due to the nature of the project, a large number of potential contamination sources have been identified along the Preferred Onshore Cable Corridor and around the Converter Station Refined Area of Search. These are detailed in Table 5, beginning at the landfall and working westwards towards the Converter Station Refined Area of Search.
Table 5: Potential sources and types of contamination
Potential sources
On-site historical
Areas of artificial ground
Historical tramway
Area of artificial ground
Areas of artificial ground
An area of rough looking/ disturbed land
Former sand pit, also indicated to be a historical landfill site and appearing as a small area of possible disturbed land on aerial photos
Both banks of River Deben (6312 2398 and 6307 2396)
East of Kirton
Kirton Lodge, 6281 2409, just within Preferred Onshore Cable Corridor
Both banks of Martlesham Creek (6263 2472 and 6263 2475)
Newbourne, just within or on boundary of Preferred Onshore Cable Corridor corridor. Grid reference 6277 2437
Crossed by Preferred Onshore Cable Corridor. Tuddenham St Martin, between Tuddenham Hall and Larks Hill (grid reference of centre 6194 2491)
Unknown
Possible made ground, fuels, fuel oils, PAHs, ash
Unknown Unknown
Possible made ground? Unknown contamination
Possible infill material of unknown composition, landfill gases and leachate
Location
Contaminants of concern
East Anglia Offshore Wind Limited
Preliminary Risk Assessment, East Anglia ONE Windfarm 41388-PRA(03)
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