Environmental Impact Assessment of Proposed Offshore Wind Farm, Off Suffolk Coast

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  • Topic: Wind power, Environmental impact assessment, Impact assessment
  • Pages : 10 (1452 words )
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  • Published : January 13, 2012
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Environmental Impact Assessment of Proposed Offshore Wind Farm, off Suffolk Coast

Table Of Content

Question i)…………………………………………………………………………………….3

Features that will require further investigation…..………………………………………3 Further Studies Needed…………………….…………………………………………………3 Field Studies……….………………………………………………………………………….3 Desk Studies…………………………………………………………………………………..4 Impacts of cable on features and how they could be minimised / avoided…………...4

Question ii)………………………..…………………………………………………………..7

Protected sites within the area of the onshore works..…………………………………...7 Species or habitats that could be relevant to any planning application ………………..7 Impact of cable route and Sub-station construction on Designated and protected sites9 References…………………………………………………….……………………………...10

Question i)

a) The features that will require further investigation are: • Marine benthos
• Marine mammals
• Fishes
• Marine habitats
• Other mobile aquatic species
• Existing Operational Telecommunications cables linking UK and Europe • Sediment transport
• Shipping and fishing
• Archaeological sites
• Recreation and tourism
• Sedentary and reef forming species

b) The following further studies will be needed:

1.Environmental Assessment

Desk and field studies are carried out to address the issues that were identified during the scoping exercise.

These studies will be used to fill in any identified gaps in knowledge of the environmental issues in the area, and also to support environmental impact assessments.

Any subsequent relevant environmental monitoring requirements will then be communicated.

i) Field Studies:

Following further field studies will be carried out:

a) Core Studies:

Characterisation field surveys will be carried out using standard techniques for benthos and fish.

b) Specialist Surveys:

Specialist surveys will be carried out for Sabellaria Reef, Marine mammals etal.

c) Benthic Ecological Survey:

Benthic Ecological Survey will be carried out as follows:

• carry out one-off survey to characterise site and inform possible future baseline survey • carry out tens to hundreds of grab samples covering Suffolk Coast, adjacent areas and control sites • carry out laboratory taxonomy work

• carry out particle size analyses
• carry out containment sampling

ii.Desk Studies:

Carry out further desk studies to determine impact of noise on Marine mammals – Habour porpoise (phocoena phocoena)

2)Impact Assessment:

A rigorous, transparent and objective assessment of the impact of the proposed wind farm will be carried out as follows:

• firstly, identify potential impacts of the proposed wind farm • secondy, determine the significance of the identified potential impacts • thirdly, develop mitigation measures, and then re-evaluate significance of the potential impacts

In determining the overall significance of an identified impact, a Significance Matrix will be used as follows:

Overall Significance = Magnitude of Impact x Importance of Receptor

c)Impacts of cable on features and how they could be minimised / avoided:

1)Marine Mammals

|Mammal |Presence |Seasonality |Impact |Mitigation | |Harbour Porpoise |Regularly |Seasonal movement to |Noise and disturbance from cable |Carry out construction works to coincide with | | | |the coast |laying construction activities |season when they migrate to the coast | |Grey Seal |Regularly |Autumn: Reproduction |Noise and disturbance from cable |Carry out construction works during their onshore| | |...
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