Consultation Document for Delimitation Consultation
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CONSULTATION DOCUMENT FOR DELIMITATION CONSULTATION CONSULTATION DOCUMENT PRIOR TO APPLICATION FOR LICENCE IN ACCORDANCE WITH CHAPTER 7(28 A) OF THE ENVIRONMENTAL CODE (NATURA 2000 LICENCE) WIND FARM, CABLES, ETC. AT SÖDRA MIDSJÖBANKEN SWECO ASSIGNMENT NUMBER 12707685 2020-05-28 SWECO CIVIL AB ASSIGNMENT MANAGER: MARTIN LJUNGSTRÖM REPORT OFFICER: SOFIA CAESAR CASE MANAGER: VERONIKA RENSFELDT 14 - 06 - 002.docx 2013 002.docx repo Sweco Summary This document constitutes RWE Renewables Sweden AB’s documentation for delimitation consultation in accordance with Chapter 6(9) of the Environmental Code concerning the forthcoming application for a licence in accordance with Chapter 7(28 a) of the Environmental Code (Natura 2000 licence) for a planned wind farm with transformer stations and cables at Södra Midsjöbanken. The investigation site for wind farm and cable corridor is shown in Figure 1. Queries addressed in the consultation document and examined further in a forthcoming environmental impact assessment (EIA) relate to impact, effects and consequences for the Natura 2000 area as a whole, and also for the habitats and species covered by the Species and Habitats Directive, namely sublittoral sandbanks (1110) and reefs (1170), and the species harbour porpoise, long-tailed duck, common eider and black guillemot. Both direct/indirect and cumulative effects are taken into consideration. CONSULTATION DOCUMENT FOR DELIMITATION CONSULTATION 2020-05-28 Contents 1 Administrative information 4 2 Introduction 4 2.1 Background and purpose 4 2.2 Scope of the Natura 2000 licence 7 2.3 Restrictions 7 3 General design of the wind farm and export cables 7 4 Location of the enterprise 8 4.1 Alternative locations 10 4.2 The zero alternative 12 5 Description of activities 13 5.1 Surveys 13 5.1.1 Seismic surveys 13 5.1.2 Geotechnical investigations 14 5.2 Construction of the wind farm 15 5.2.1 Laying foundations – possible foundation types 15 5.2.2 Wind turbines 23 5.2.3 Other facilities 23 5.2.4 Construction of an internal cable network 24 5.3 Laying of export cables 24 5.4 The operating phase 25 5.5 Decommissioning 25 5.6 Planned implementation time 26 6 Criteria on site 26 6.1 The Natura 2000 site Hoburgs Bank and the Midsjö Banks 26 6.1.1 Conservation plan 27 6.1.2 Harbour porpoise 28 6.1.3 Long-tailed duck 31 6.1.4 Black guillemot 37 6.1.5 Common eider 39 6.1.6 Sublittoral sandbanks 39 6.1.7 Reefs 40 6.2 Södra Midsjöbanken (outside the Natura 2000 site) 41 6.3 Other general and individual interests 41 6.3.1 National interests according to chapter 3 of the Environmental Code 41 1 (53) 14 - CONSULTATION DOCUMENT FOR DELIMITATION CONSULTATION 06 - 2020-05-28 13 repo002.docx 20 repo002.docx CS p:\21228\13009445_e.on_wind_natura_2000\000\14 natura 2000-ansökan\esbosamråd\samrådsunderlag översatt en pl\uex38620_en_samrådsunderlag natura 2000_abok.docx 6.3.2 Maritime traffic 42 6.3.3 Proposed maritime plan 42 6.3.4 Individual interests 42 7 Anticipated environmental impact 43 7.1 Impact on the Natura 2000 site in its entirety 43 7.2 Harbour porpoise 43 7.2.1 Surveys 43 7.2.2 Construction phase 44 7.2.3 Operating phase 45 7.2.4 Decommissioning phase 46 7.3 Long-tailed duck 46 7.3.1 Surveys 46 7.3.2 Construction phase 46 7.3.3 Operating phase 47 7.3.4 Decommissioning phase 47 7.4 Black guillemot 47 7.4.1 Examination 47 7.4.2 Construction phase 47 7.4.3 Operating phase 47 7.4.4 Decommissioning phase 48 7.5 Common eider 48 7.5.1 Surveys 48 7.5.2 Construction phase 48 7.5.3 Operating phase 48 7.5.4 Decommissioning phase 48 7.6 Sublittoral sandbanks 48 7.6.1 Surveys 49 7.6.2 Construction phase 49 7.6.3 Operating phase 49 7.6.4 Decommissioning phase 49 7.7 Reefs 49 7.7.1 Surveys 50 7.7.2 Construction phase 50 7.7.3 Operating phase 50 7.7.4 Decommissioning phase 50 7.8 Other environmental impact 50 7.8.1 Accidents 50 8 Cumulative effects 52 9 Data surveys 55 2 (53) 14 - 06 CONSULTATION DOCUMENT FOR DELIMITATION - CONSULTATION 2020-05-28 repo002.docx 2013 repo002.docx CS p:\21228\13009445_e.on_wind_natura_2000\000\14 natura 2000-ansökan\esbosamråd\samrådsunderlag översatt en pl\uex38620_en_samrådsunderlag natura 2000_abok.docx 10 Scope of the consultation 55 11 Scope of the environmental impact assessment (EIA) 56 3 (53) 14 - CONSULTATION DOCUMENT FOR DELIMITATION CONSULTATION 06 - 2020-05-28 13 repo002.docx 20 repo002.docx CS p:\21228\13009445_e.on_wind_natura_2000\000\14 natura 2000-ansökan\esbosamråd\samrådsunderlag översatt en pl\uex38620_en_samrådsunderlag natura 2000_abok.docx 1 Administrative information Applicants: RWE Renewables Sweden AB Company registration no.: 556938-6864 Address: Box 388, SE-201 23 Malmö 2 Introduction 2.1 Background and purpose RWE Renewables Sweden AB, formerly E.ON Wind Sweden AB (hereinafter RWE), began in 2006 to explore the options for establishing a major offshore wind farm in southern Sweden, as it was apparent that the electricity deficit would increase in the future. Södra Midsjöbanken, Norra Midsjöbanken and Hoburgs Bank in the Baltic Sea were initially indicated as potential areas for offshore wind power. Following investigations, the company concluded that the opportunities for environmental assets and wind power to coexist were greatest at Södra Midsjöbanken. In 2007, the company applied for and received a survey licence in accordance with the Swedish Continental Shelf Act (1966:314) (KSL), which included bed sampling, peak pressure sounding and drilling at Södra Midsjöbanken. Between Södra Midsjöbanken and the mainland, the licence covered penetrating echo sounding and extraction of bed samples. The licence was valid from 15 March 2007 to 15 March 2012 and was used between February and April 2011. An extension to the validity of the survey licence up to and including 2018 was applied for and granted on 13 March 2012. The need for an extension was justified by the anticipated need for supplementary surveys for a wind farm at Södra Midsjöbanken in accordance with a currently dormant licence application. On 17 February 2012, the company submitted an application for a licence in accordance with the Swedish Economic Zone Act (1992:1140) (SEZ) in order to construct and run a wind farm at Södra Midsjöbanken, and also in accordance with the Continental Shelf Act (1966:314) to lay and maintain underwater cables for heavy current and perform the requisite surveys in the continental shelf given the laying of power lines and the erection of permanent installations. In December 2016, the authorities designated a sea area of more than 10,500 km2 in area in the Baltic Sea as a Special Protection Area (SPA) in accordance with the Birds Directive. In December 2017, the same area was designated as a Site of Community Importance (SCI) in accordance with the Species and Habitats Directive. The marine area includes the offshore banks Hoburgs Bank, Norra Midsjöbanken and parts of Södra Midsjöbanken as well as parts of Öland’s southern bed, which is a smaller offshore bank (Naturvårdsverket, utan årtal). 4 (53) 14 - 06 CONSULTATION DOCUMENT FOR DELIMITATION - CONSULTATION 2020-05-28 repo002.docx 2013 repo002.docx CS p:\21228\13009445_e.on_wind_natura_2000\000\14 natura 2000-ansökan\esbosamråd\samrådsunderlag översatt en pl\uex38620_en_samrådsunderlag natura 2000_abok.docx The government, via the Ministry of the Environment, stated in an official communication dated 14 March 2019 that RWE’s application for a licence in accordance with the Swedish Economic Zone Act (1992:1140) (SEZ) to erect an offshore wind farm at Södra Midsjöbanken in the southern Baltic Sea had to be supplemented with a licence in accordance with Chapter 7(28 a) of the Environmental Code (EC) (i.e. a Natura 2000 licence). Prior to the application for a licence in accordance with Chapter 7(28 a) of the EC, RWE is now consulting on the delimitation and contents of the forthcoming environmental impact assessment (known as a delimitation consultation in accordance with Chapter 6(9) of the EC). This document is a consultation document. No survey consultation in accordance with Chapter 6(23) of the EC will be performed because a specific environmental assessment must always be performed for an enterprise that is to be examined for a licence in accordance with Chapter 7(28 a) of the Environmental Code. Prior to applying for a Natura 2000 licence, RWE is examining the option of potentially adjusting the location of the wind farm within an extended investigation site with a view to minimising the impact on natural assets in the area; see Figure 1. This means that a number of investigations and services are being performed between 2019 and 2020 (see also chapter 9). Surveys of seabed conditions are included in survey packages in accordance with the Continental Shelf Act, for which RWE has applied for licences: • Survey licence 1, including geophysical (bathymetry measurement), geotechnical (bed sampling) and environmental surveys and inventory of undetonated objects. • Survey licence 2, including geotechnical surveys (test drilling in a small number of locations, plus peak pressure sounding and vibrocore sampling survey). The surveys above involve such limited impact on the environment within the Natura 2000 site that they do not involve requirements for a Natura 2000 licence. The extended investigation site is situated partly within the Natura 2000 site that encompasses Hoburgs Bank and the Midsjö Banks (SE 0330308): see Figure 1 and Figure 2. 5 (53) 14 - CONSULTATION DOCUMENT FOR DELIMITATION CONSULTATION 06 - 2020-05-28 13 repo002.docx 20 repo002.docx CS p:\21228\13009445_e.on_wind_natura_2000\000\14 natura 2000-ansökan\esbosamråd\samrådsunderlag översatt en pl\uex38620_en_samrådsunderlag natura 2000_abok.docx Figure 1 Investigation site for wind farm and cable corridor.