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2013, HR Wallingford, Westermost Rough, Assessment of Rock Dumping

2013, HR Wallingford, Westermost Rough, Assessment of Rock Dumping

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Coastal Processes
Sedimentology

Description

HR Wallingford has been commissioned by WMRL, to provide support to the Marine Licence process with 
regard to rock dumping for export cable protection and potential turbine foundation drilling through chalk. On 
15 March 2013 HR Wallingford, together with WMRL, attended a meeting with the Marine Management 
Organisation, Natural England and Cefas to discuss the appropriate way forward to successful achievement 
of the Marine Licences. 
The report within this series presents an assessment of the impact of rock dumping along sections of the export cable route 
on natural sediment transport processes. The purpose of the report is to inform the Environmental Impact 
Assessment not the engineering design. 
HR Wallingford has previously undertaken work to review the metocean and morphological studies (HR 
Wallingford, 2012a) and a review of the impacts of the wind farm on Spurn Head (HR Wallingford, 2012b). 
Potential changes to the wave climate, currents and sediment transport regime and sea bed morphology, as 
a result of rock dumping along sections of the export cable route, have been based on desk studies and 
expert opinion. No new numerical modelling has been carried out. 
The agreed scope of work is: 
 Assess the effects of the rock dumping, along the export cable route, on natural sediment transport 
processes including: 
 Review of the general (baseline) sediment transport regime around the cable corridor, including the 
beach and cliffs along the adjacent shore down to Spurn Head. 
 Assess the potential for local scour and potential dispersion of disturbed sediment.

Report

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Report