Dudgeon and Sheringham Shoal Offshore Wind Farm …

Dudgeon and Sheringham Shoal Offshore Wind Farm ExtensionsPreliminary Environmental Information Report

Volume 2Chapter 11 - Fish Ecology

April 2021

Doc. No. PB8164-RHD-ZZ-XX-RP-Z-0010

Rev. no.1

of 2

Classification: Open Status: Final www.equinor.com

Title:

Dudgeon and Sheringham Shoal Offshore Wind Farm Extensions Preliminary Environmental Information Report Chapter 11 Fish Ecology

Document no.: PB8164-RHD-ZZ-XX-RP-Z-0010

Date: Classification

29 April 2021 Final

Prepared by:

Royal HaskoningDHV

Approved by: Date:

Magnus Eriksen, Equinor

List of Figures

Figure 11.1 Study Area

Figure11.2 Herring Habitat Suitability

Figure 11.3 Herring Potential Spawning Areas

Figure 11.4 Sandeel Habitat Suitability

Figure 11.5 Sandeel Potential Spawning Areas

Figure 11.6 Worst Case Underwater Noise Impact Ranges in Relation to Potential Herring Spawning

.

29 April 2021

Legend:

Dudgeon

34F0

35F0

34F1

35F1

300000 325000 350000 375000 400000 42500058

2500

058

5000

058

7500

059

0000

059

2500

0 ±

Report:

Co-ordinate System: WGS 1984 UTM Zone 31N

PB8164-RHD-ZZ-OF-DR-Z-0168Document No:

Fish and Shellfish EcologyPreliminary Environmental Information Report (PEIR)

REV SCALE SIZE CHK APRDATE

A 07/04/2021 AZ RS RS

DRW

A31:450,000

Dudgeon Offshore Wind Farm Extension Site

Sheringham Shoal Offshore Wind FarmExtension Site

Offshore Cable Corridor

Existing Offshore Wind Farm Export Cable

Existing Offshore Wind Farm

ICES Rectangle

Local Study Area

Regional Study Area

Data Sources: © MMO, 2020. © Royal HaskoningDHV 2020.Base Map: © OpenStreetMap (and) contributors, CC-BY-SA.Service Layer Credits: © OpenStreetMap (and) contributors,CC-BY-SA

Sheringham Shoal and Dudgeon Extension Projects

Figure 11.1Study Area

Legend:

0 10 20 km

0 5 10 Miles

SheringhamShoal

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Report:



Legend:



A 09/04/2021 AZ RS RS

DRW

A31:250,000


Sheringham Shoal Offshore Wind Farm Extension Site

Offshore Cable Corridors



Grab SamplesHerring Suitability!( Unsuitable

!( Marginal

!( Preferred

Habitat AreaHerring Suitabliity

Unsuitable

Marginal

Preferred

Data Sources: Envision, 2021; British Geological Surveymaterials © UKRI 2021 All rights reservedBase Map: © British Crown and OceanWise, 2021. All rightsreserved. License No. EMS-EK001-627782. Not to be used forNavigation; Crown copyright and database rights 2020,Ordnance Survey 0100031673; © OpenStreetMap (and)contributors, CC-BY-SA


Figure 11.2Herring Habitat Suitability

0 7.5 15 km

0 4 8 Miles

Geophysical Survey Interpretation BGS Sediment Class Suitability

±

Report:



Legend:



A 09/04/2021 AZ RS RS

DRW

A31:750,000






Herring Spawning Area (Coull et al 1998)

BGS Sediment ClassHerring Suitability

Marginal

Preferred

International Herring Larvae Survey (IHLS)(2009 - 2017)! Sample Location

Larvae Count (per sq/m)0 - 50

50 - 200

200 - 600

> 600

Data Sources: Envision, 2021; British Geological Survey materials © UKRI 2021All rights reservedBase Map: © British Crown and OceanWise, 2021. All rights reserved. LicenseNo. EMS-EK001-627782. Not to be used for Navigation; Crown copyright anddatabase rights 2020, Ordnance Survey 0100031673; © OpenStreetMap (and)contributors, CC-BY-SA


Figure 11.3Herring Potential Spawning Areas

0 20 40 km

0 10 20 Miles

Herring Habitat Suitability Assessment 1 (Low)

2

3

4

5

6

7

8

9

10

11 (High)

Indicative Herring Spawning Data Herring Spawning Potential Heat Map

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±

Report:



Legend:



A 09/04/2021 AZ RS RS

DRW

A31:250,000






Grab SamplesSandeel Suitability!( Unsuitable

!( Marginal

!( Preferred

Habitat AreaSandeel Suitabliity

Unsuitable

Marginal

Preferred

Data Sources: Envision, 2021; British Geological Surveymaterials © UKRI 2021 All rights reservedBase Map: © British Crown and OceanWise, 2021. All rightsreserved. License No. EMS-EK001-627782. Not to be used forNavigation; Crown copyright and database rights 2020,Ordnance Survey 0100031673; © OpenStreetMap (and)contributors, CC-BY-SA


Figure 11.4Sandeel Habitat Suitability

0 7.5 15 km

0 4 8 Miles

!(!(!(!(!( !(

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!(

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Geophysical Survey Interpretation BGS Sediment Class Suitability

±

Report:



Legend:



A 12/04/2021 AZ RS RS

DRW

A31:750,000






BGS Sediment ClassSandeel Habitat Suitability

Marginal

Preferred

Sandeel Spawning Area (Coul et al, 1998)

Sandeel Fishing Grounds (Jensen et al, 2011)

Sandeel Habitat Suitability Assessment1 (Low)

2

3

4

5

6

7

8

9 (High)

Data Sources: Envision, 2021; British Geological Survey materials © UKRI2021 All rights reservedBase Map: © British Crown and OceanWise, 2021. All rights reserved. LicenseNo. EMS-EK001-627782. Not to be used for Navigation; Crown copyright anddatabase rights 2020, Ordnance Survey 0100031673; © OpenStreetMap (and)contributors, CC-BY-SA


Figure 11.5Sandeel Potential Spawning Areas

0 20 40 km

0 10 20 Miles

Indicative Sandeel Spawning Data Sandeel Spawning Potential - Heat Map

!(

!(

±

Report:



Legend:



A 13/04/2021 AZ RS RS

DRW

A31:475,000






Modelled Noise Point Source!( Dudgeon South East Modelling Location

!( Sheringham East Modelling Location

Monopile Noise Impact Contours (StationaryModel)

Dudgeon South East Modelling Location

Sheringham Extension East Modelling Location

Extrapolated Noise Contours (Worst Case)Dudgeon Extension

Sheringham Extension

Data Sources: Envision, 2021; British Geological Survey materials ©UKRI 2021 All rights reservedBase Map: © British Crown and OceanWise, 2021. All rights reserved.License No. EMS-EK001-627782. Not to be used for Navigation; Crowncopyright and database rights 2020, Ordnance Survey 0100031673; ©OpenStreetMap (and) contributors, CC-BY-SA


Figure 11.6Worst Case Underwater Noise Impact

Ranges in Relation to Potential Herring Spawning

0 10 20 km

0 8 16 Miles

Herring Habitat Suitability Assessment Heat Map1 (Low)

2

3

4

5

6

7

8

9

10

11 (High)

!(

!(

Mortality and Potential Mortal Injury (207 dB) Monopile Noise Impact Contour

TTS (186 dB) Monopile Noise Impact Contour

Dudgeon and Sheringham Shoal Offshore Wind Farm …

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