Environmental Assessment of Marine Renewable Energy Presentation to Pre-BIC meeting 24 th June 2010 Andrew Casebow Chris Green

2 27/06/2015 Introduction Alderney Guernsey Jersey Sark

3 27/06/2015 Introduction

4 27/06/2015 Scope

5 27/06/2015 Scope of Environmental Desk Study Desk Study  Tailored to protection of Guernsey’s unique marine environment  Legislative processes  Draws best practice from UK and elsewhere  Delivered by local specialists  Acts to facilitate controlled access to the marine energy resources

6 27/06/2015 Scope

7 27/06/2015 Scope

8 27/06/2015 Objectives  Assess the potential effects of marine renewable energy devices  Advise and support the development of strategy  Inform project level decisions  Identify key issues and data gaps  Inform future phases of assessment  Public and stakeholder engagement

9 27/06/2015 Environmental Planning Process

10 27/06/2015 Topics Covered Physical Marine Environment  Geology and Sediment Transition  Marine Processes  Water Quality Marine Biological Environment  Benthic Ecology  Pelagic Ecology  Birds  Marine Mammals Marine Human Environment  Commercial Fisheries and Mariculture  Recreational Fishing  Marine and Coastal Historic Environment  Existing Submarine Cables, Electrical Grid, and Power System Connectivity  Shipping and Navigation  Tourism and Recreation Other Topics  Noise  Air Quality  Landscape and Seascape Character

11 27/06/2015 Key Outputs  Key risks and mitigation measures  The Environmental Action Plan (EAP) – Physical measures taken to protect the environment  Regional Monitoring Plan – Investigative work (throughout all phases)  Geographical Information System (GIS).

12 27/06/2015 Key Outputs

13 27/06/2015 Data Gaps  Energy resource  Sediment processes  Benthic habitat  Bird feeding grounds  Behaviour of large animals in proximity to devices  Cumulative effects

14 27/06/2015 Key Impacts and Mitigation Positive Impacts :  Reduction in CO2 emissions and other pollution  Energy security  Potential for Safety Zones to act as fishing no-take zones  Device structures and foundations can act as artificial reefs  Employment Negative Impacts and mitigation  Impacts are very site-specific.  Careful selection of deployment zones based on constraints mapping

15 27/06/2015 Key Impacts and Mitigation  Geology and Sediment Transition  Risk of scour and smothering  Risk of coastal erosion  Hydraulic and sediment modelling

16 27/06/2015 Key Impacts and Mitigation  Benthic Ecology  Lack of knowledge of benthic habitat  Risk of direct disturbance  Strategic surveys  Habitats mapping

17 27/06/2015 Key Impacts and Mitigation  Large Pelagic Ecology and Marine Mammals  Lack of knowledge of impacts  Noise  Risk of barrier to movement  Noise reduction measures during construction

18 27/06/2015 Key Impacts and Mitigation  Commercial Fishing  Entanglement  Risk of exclusion  Risk of relocation to adjacent grounds  Fisheries activities study

19 27/06/2015 Key Impacts and Mitigation  Navigation  Risk of collision  Diversion routes  Navigation risk assessment  Marking and lighting  Safety zones?

20 27/06/2015 Key Impacts and Mitigation  Landscape  Whole of rural coast is designated  Device specific measures  Visual impact assessment

21 27/06/2015 Conclusions

22 27/06/2015 Next Steps

23 27/06/2015 End