Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2...

22
Brenig Wind Farm Tip Height Extension Denbighshire, North Wales Environmental Statement, Volume 4 of 4: Non-Technical Summary June 2015 Prepared by Natural Power on behalf of Brenig Wind Ltd. Natural Power, Harbour House, Y Lanfa, Abersytwyth, Ceredigion, SY23 1AS

Transcript of Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2...

Page 1: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height ExtensionDenbighshire, North Wales

Environmental Statement, Volume 4 of 4:Non-Technical Summary

June 2015

Prepared by Natural Poweron behalf of Brenig Wind Ltd.

Natural Power, Harbour House, Y Lanfa, Abersytwyth, Ceredigion, SY23 1AS

Page 2: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Preface

This Environmental Statement (ES) has been prepared by Natural Power Consultants Ltd, on behalf

of Brenig Wind Ltd, in accordance with the statutory procedures set out in the Town and Country

Planning (Environmental Impact Assessment) (England and Wales) Regulations 1999 (Statutory

Instrument 1999 No. 293). The ES supports the formal application for the Brenig Wind Farm Tip

Height Extension located in Strategic Search Area A, Denbigh, North Wales, and has been prepared

for Denbighshire County Council (DCC) under the Town and Country Planning Act 1990.

The full ES comprises the following:

Volume 1: Presents the main written statement of all the environmental assessments undertaken.

Volume 2: Presents the supporting figures and appendices for Volume 1.

Volume 3: Contains all the visualisations/viewpoints (Viewpoints A-W) for the landscape and visual

assessment of the proposal.

Volume 4: Presents the key information in the bilingual Welsh/English Non-Technical Summary

Other documents submitted along with the ES include a Design & Access Statement. The full ES and

application maps may be viewed at the following address during normal working hours:

Denbighshire County Council

Caledfryn Offices

Smithfield Road Denbigh LL16 3RJ

Conwy County Borough Council

Civic Offices,

Abergele Road

Colwyn Bay,

LL29 8AR

The full application and supporting documents will also be available for viewing on the Denbighshire

County Council website using their online ‘Search for Planning Applications’ facility.

Copies of the full Environmental Statement and Non-Technical Summary can be obtained from

Natural Power Consultants Ltd, Harbour House, Y Lanfa, Aberystwyth, Ceredigion, SY23 1AS

Tel: +44 (0) 1970 636869

Non-Technical Summary in printed form Free

Environmental Statement in printed form (Volumes 1-4) £580

Environmental Statement in PDF file format on DVD (Volumes 1-4) £25

No part of this publication may be reproduced by any means without prior written permission from

Natural Power Consultants Ltd and Brenig Wind Ltd. Every effort is made to ensure the accuracy of

the material published however, neither Natural Power nor Brenig Wind Ltd will be liable for any

inaccuracies.

Page 3: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height Extension 18 May 2015

Contents

1. Introduction ..................................................................................... 1

2. Approach to Environmental Impact Assessment ........................ 2

3. Policy Context ................................................................................. 3

4. Site Selection and Design .............................................................. 3

5. Community Consultation ............................................................... 3

6. Project Details ................................................................................. 4

Site Location ..................................................................................... 4

Project Description ............................................................................ 4

Grid Connection ................................................................................ 5

Construction Programme .................................................................. 5

Decommissioning .............................................................................. 6

7. Summary of Environmental Assessments ................................... 6

Landscape and Visual Impacts ......................................................... 6

Selected Viewpoints ............................................................................... 6

Snowdonia National Park ....................................................................... 6

Clwydian Range and Dee Valley AONB ................................................. 6

Area of Outstanding Beauty .................................................................... 7

Special Landscape Area ......................................................................... 7

Landscapes of Outstanding Historic Interest and Landscapes of Special Historic Interest .......................................................................... 7

Registered Parks and Gardens of Special Historic Interest .................... 7

Country Parks ......................................................................................... 7

National Trails/Long Distance Paths and National Cycle Routes............ 7

Major Transport Routes .......................................................................... 8

Landscape Character ............................................................................. 8

Visual Amenity ........................................................................................ 9

Cumulative Effects .................................................................................. 9

Residential Amenity ................................................................................ 9

Hydrology ........................................................................................ 10

Ecological & Ornithological Assessment ......................................... 10

Noise ............................................................................................... 11

Introduction ........................................................................................... 11

The Assessment and Rating of Noise from Wind Farms: ETSU-R-97 .......................................................................................................... 11

Institute of Acoustics’ Good Practice Guide to the Application of ETSU-R-97 ........................................................................................... 12

Assessment of Noise Levels in Accordance with ETSU-R-97 .............. 12

Page 4: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height Extension 18 May 2015

Conclusion ............................................................................................ 12

Shadow Flicker ................................................................................ 12

Cultural Heritage ............................................................................. 13

Traffic and Transport ....................................................................... 14

Communications, Aviation and Defence ......................................... 15

Communications ................................................................................... 15

Terrestrial Television ............................................................................ 15

Aviation and Defence ............................................................................ 15

Page 5: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height Extension 18 May 2015 1

1. Introduction

1.1 This Non-Technical Summary (NTS) summarises the key findings of the environmental studies carried out in relation to the proposal for an increase in turbine tip height at the consented Brenig Wind Farm. The Brenig Wind Farm (hereafter referred to as the ‘consented scheme’) comprises 16 turbines with a maximum tip height of 100 m and a maximum output capacity of up to 40 MW. The consented scheme includes site tracks, foundations, 2 permanent anemometry masts, transformer, underground electricity cables, a switchgear and metering building, borrow pits, temporary construction compound and associated works/infrastructure. The Brenig Wind Farm Tip Height Extension (hereafter referred to as the ‘proposed development’) proposes an increase in tip height for all 16 turbines from 100 m as consented to 110 m.

1.2 This NTS has been prepared for Denbighshire County Council (DCC), in support of a planning application submitted by Brenig Wind Ltd (BWL) for an increase to the turbine tip heights. The proposed scheme would differ from the consented scheme by an increased tip height for all 16 consented turbines from 100 m to 110 m due to an increase in hub height and blade length, and could require a potential increase in foundation dimensions and crane hardstanding area to accommodate the larger turbine components. The number and location of the consented turbines will not change. This could result in an additional output of 8 MW, bringing an increase to the overall indicative maximum output capacity of the wind farm to 48 MW.

1.3 A map showing the turbine layout is presented in Figure 2 at the end of this document.

1.4 The energy output from the proposed development will be approximately 100,915 MWh1 per annum,

an increase of 16,800 MWh per year over the consented scheme. The proposed scheme will generate the equivalent of enough electricity to power over 23,600

2 homes per year in Denbighshire

which equates to 54.7%3 of homes in Denbighshire.

1.5 The full ES, referenced throughout this document incorporates more detailed information about the site, the design of the project and its potential environmental impact.

1.6 BWL is the financial vehicle that has been established to bring the proposed development forward.

1.7 BWL’s investment in renewable energy generation will assist the Government in reaching their renewable energy targets and Carbon Dioxide (CO2) emissions reduction goals, tackle fuel poverty and attain self-sufficiency.

1.8 BWL recognises the value in working with independent experts and consultants throughout the development process, thereby ensuring a sensitively designed and constructed project, these consultants have been appointed to carry out the environmental assessments, provide technical support and prepare the planning applications on behalf of BWL. These consultants have been

1 Figures based on 3 MW turbines operating at a 24% capacity factor .

2 Number of homes; 100,915 MWh from 3 MW turbines with a 24% capacity factor using 4,268 KWh per average

Denbighshire household (DECC (2015)), Regional and local authority electricity consumption statistics, 2005 to 2013,

Available online from: https://www.gov.uk/government/statistical-data-sets/regional-and-local-authority-electricity-

consumption-statistics-2005-to-2011 (last accessed 07/05/2015)

3 Number of homes in Denbighshire based on 2013 data (DECC (2015)), Regional and local authority electricity

consumption statistics, 2005 to 2013, Available online from: https://www.gov.uk/government/statistical-data-

sets/regional-and-local-authority-electricity-consumption-statistics-2005-to-2011 (last accessed 07/05/2015)

Page 6: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height Extension 18 May 2015 2

chosen for their knowledge and understanding of the local environment and their expertise in their chosen disciplines.

1.9 BWL believes in an open approach to wind farm development involving extensive community and stakeholder consultation throughout the development process and beyond. This proven method ensures that local communities are kept regularly informed of progress and key events, culminating in a good working relationship throughout the lifetime of the project.

2. Approach to Environmental Impact Assessment

2.1 Developers applying for consent for wind farms have to undertake an Environmental Impact Assessment (EIA). The Environmental Statement (ES) sets out the results of the EIA process and is a detailed document that looks at how the proposed development will affect the site and the area around it. For the proposed development, the EIA can be divided into five stages:

2.2 Stage 1 - Understanding the site: As the Brenig Wind Farm is a consented scheme there was a substantial knowledge base available for the site. The first stage of the work, therefore, involved a review of the available information and obtaining an understanding of the potential changes to previous assessments arising from an increase in the turbine tip heights gathering general information on how the wind farm should be designed, built and managed. This information included basic information available for the site and information gathered during visits to the site/area.

2.3 Stage 2 - Scoping the assessment work: The next stage involved Natural Power and their specialist consultants contacting the relevant public bodies, including DCC, Natural Resources Wales (NRW), amongst others. Discussions took place on the types of surveys and assessments needed to inform the preparation of a comprehensive ES to support the application.

2.4 Stage 3 - Gathering of Existing Data: Once the assessment work was agreed, Natural Power and the specialist consultants then set about gathering existing survey information, reports and information for the site and surrounding area.

2.5 Stage 4 - Further Survey Work: Further survey and assessment works were undertaken to add to existing assessments to understand the potential effects of increasing the turbine tip heights at the consented Brenig Wind Farm. Assessments were completed looking at landscape, birds, vegetation and other wildlife, watercourses, historic sites and existing background noise levels at nearby properties.

2.6 Stage 5 - Impact Assessment: As the proposed development is for an increase in tip heights to previously consented scheme, the site design works had previously been completed and mitigation to avoid sensitive features had already been incorporated into that design. The site layout design for the proposed development remains unchanged from the consented scheme, therefore the final stage involved completing assessments and considering the remaining and unavoidable effects of the wind farm arising from the increase in tip heights and foundation footprints of the proposed development. The EIA process looks at the size and significance of these effects, whether and how they can be mitigated, and how they are balanced against the benefits of the wind farm.

2.7 When undertaking these assessments, a common outline methodology was adopted, wherever possible, to assess in a consistent way whether or not the potential effects identified were ‘significant’ as defined by the Town and Country Planning (Environmental Impact Assessment) (England and Wales) Regulations 1999.

Page 7: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height Extension 18 May 2015 3

3. Policy Context

3.1 Chapter 5 of the ES describes in detail all of the policy including international agreements, legislation, development plans and other material considerations which are relevant to the proposed development.

3.2 The importance of renewable energy is underlined by policy and this chapter indicates how this is being encouraged at international, national and local level.

3.3 As the proposed development would have an installed capacity of less than 50 MW, the application must be made under the Town and Country Planning Act 1990 and in accordance with the requirements of the Town and Country Planning (Environmental Impact Assessment) (England and Wales) Regulations 1999. This means that the application will be submitted to the local authority of Denbighshire, who will then send it to the relevant statutory consultees for comment. This includes Natural Resources Wales, Ministry of Defence etc. The statutory consultees will then have to respond with their comments and the local authority will have to consider their comments before making a final decision.

4. Site Selection and Design

4.1 Brenig Wind Farm is a consented scheme having gained consent in April 2009 under the Town and Country Planning (England and Wales) Act 1990 from DCC (Planning Reference: 25/2007/0565/PF). This application is seeking consent to increase the tip height of the 16 consented turbines from 100 m to 110 m. The site selection process was previously completed for the original application and the site layout configuration will not change from that currently consented. Chapter 3, therefore, provides an overview of the consented scheme and outlines the changes proposed including the increased tip height and increase in foundation dimensions. It also describes the processes applied in undertaking the EIA for the proposed tip height extension, and in compiling the ES.

4.2 Detailed assessments of construction considerations (including ground conditions and access), landscape and visual considerations, (including landscape designations and cumulative impact), noise levels, ecological and ornithological considerations (including designated areas), cultural heritage considerations, existing land use, rights of way and existing infrastructure (e.g. service pipes and cables, air traffic, TV and other electromagnetic paths) were undertaken to confirm the potential impacts arising from an increase in tip height and any potential increase in the wind farm footprint for the proposed development.

5. Community Consultation

5.1 As outlined in Chapter 3, a number of consultation strategies were adopted by BWL to ensure that the local community was kept informed of the scheme. Public consultation included the following main elements:

A public exhibition;

Two newspaper advertisements;

Letter invites sent to nearby residents;

Email invites sent to local stakeholders; and

Project email address.

5.2 Open communications between Brenig Wind Ltd. and the local communities took place, to enable the communities to be better informed about the proposed tip height extension application for the Brenig

Page 8: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height Extension 18 May 2015 4

Wind Farm and be given an opportunity to contribute their views before formal submission of the planning application.

5.3 For further information regarding community consultation, please refer to Chapter 3 of the ES.

6. Project Details

Site Location

6.1 The proposed development is located on Tir Mostyn hilltop 1 km west of the existing Tir Mostyn Wind Farm. The development area comprises a block of agriculturally improved upland grazing and two forestry plantations which adjoin it on its north- east and south sides. The site is located approximately13 km west of Ruthin and 11 km south-west of the county town of Denbigh. The nearest village is Nantglyn located approximately 3 km to the north and Llyn Brenig Reservoir lies to the west. The regional context of the proposed development is shown in Figure 1 at the end of this document.

Project Description

6.2 Chapter 4 of the ES outlines the details of the proposed development, including specifications of turbines, access tracks and associated infrastructure. It also describes the general construction methodology, timescales and typical construction equipment likely to be used. Operational and decommissioning phases are also described within this chapter.

6.3 The construction methods that will be applied on site build on best practice methodologies developed at other wind farms and comply with all Health and Safety requirements for construction operations

6.4 The layout of the wind farm and associated infrastructure is shown in Figure 2. The key components of the proposed development include:

16 wind turbines with an overall height to blade tip of up to 110 metres;

Foundations (typically a square concrete base plate of up to 18 m x 18 m);

Crane pads adjacent to each wind turbine;

External transformer housing;

6.5 Additional features of the development that have previously been consented as part of the Brenig Wind Farm and that will remain unchanged for the proposed development include:

Site tracks (new and upgrading of existing);

Underground electricity cables;

Two permanent anemometer masts;

Borrow pits and a temporary concrete batching plant;

A substation building (contain the switchgear, metering, control and communication equipment

required to operate the wind farm) and compound area. Temporary construction and storage

compounds and associated works/infrastructure.

6.6 The specific turbine model has not yet been selected but would be of a typical modern, quiet design, incorporating a tapered tubular tower and three blades attached to a nacelle housing containing the generator, gearbox and other operating equipment. Though the final decision on the colour of the turbines would be determined by DCC, it is anticipated to be a semi-matt pale grey colour.

6.7 The turbine layout and associated infrastructure is presented in Figure 2 at the end of this document.

Page 9: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height Extension 18 May 2015 5

6.8 The layout was developed to make optimal use of the wind resources available in the area whilst still being sensitive to ecological, archaeological, landscape, noise and visual constraints.

6.9 The total permanent (25-year operation period) land take of the proposed development, after completion of reinstatement measures, including foundations, control building, crane pads and site tracks has been assessed to be approximately 126,840 m² (12.68 Hectares). This is an increase of 6,288 m

2 (0.62 Hectares) from the consented scheme, owing to the potential requirement for larger

foundations and crane pads to accommodate the tip height extension.

6.10 The proposed access route for the delivery of turbine components, transformers and the cranes would be via the B4501 using the existing road networks surrounding the site. The proposed route from port to the site is described in Section 11.5 of Chapter 11. Once on site, the existing access track would be upgraded to allow the transport of components. The site tracks have been agreed as part of the consented scheme and no amendments are proposed to the location or design of these tracks as part of the proposed development. The detail of any other road upgrades would be agreed with DCC prior to the commencement of construction and form part of a Construction Method Statement. Access for all other items such as site workers, concrete, other plant and other construction materials would also follow this route. See Chapter 11 of the ES for further information on the access route.

Grid Connection

6.11 The proposed development would utilise its existing grid connection offer.

Construction Programme

6.12 The implementation of the proposed developments construction programme would commence following agreement on the detailed design issues and consent conditions with the construction contractors and relevant authorities. The main construction period would last approximately 19 months, from commencement of forestry felling and construction through to installation and commissioning of the turbines and ending with site reinstatement. Construction would consist of the following phases which, although presented sequentially, may occur concurrently:

Site mobilisation;

Public highway improvements.

Construction of a site storage compound for off-loading materials and components and to

accommodate site offices and mess facilities. Depending on where the site storage compound is,

normally some tracks would be required.

Construction of site tracks and excavation of cable trenches.

Construction of turbine foundation and crane pads.

Delivery and erection of turbine towers, and installation of nacelles and blades.

Delivery and erection of on-site anemometer mast.

Laying of on-site cabling.

Installation of turbine transformers.

Construction of the on-site substation and control building.

Testing and commissioning of the turbines and the wind farm electrical system.

Site reinstatement (on-going during works).

6.13 In line with NRW guidance, appropriately competent operatives would be used for handling, storing and arranging for the disposal of any potentially polluting substances. In accordance with legal requirements only licensed waste disposal companies would be used to dispose of all waste material.

Page 10: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height Extension 18 May 2015 6

6.14 For the consented scheme, the site entrance was constructed and completed in February 2014, and felling commenced in February 2015.

Decommissioning

6.15 At the end of the proposed developments useful life it is planned that the turbines, transformers and the control building would be removed. The upper sections of the turbine foundations would be removed and backfilled with a minimum 1 m of suitable subsoil and topsoil replaced on the surface, and the area reseeded. Tracks that are to be utilised for forestry operations would be left in-situ, other tracks would be allowed to grass over or be covered with topsoil and reseeded. At least six months prior to the decommissioning of the site a Decommissioning Method Statement would be prepared and agreed with DCC and other relevant consultees.

7. Summary of Environmental Assessments

7.1 In carrying out and presenting the results of the specialist surveys and assessments within the Environmental Statement, care has been taken to adopt a worst case approach, to ensure that environmental effects are not underestimated.

Landscape and Visual Impacts

7.2 With reference to Chapter 6 of the ES a detailed Landscape and Visual Impact Assessment (LVIA) was carried out by independent landscape architects, Soltys Brewster Consultants. It should be borne in mind that all significant landscape and visual effects identified are temporary in nature and would be reversible. A summary of the findings of the LVIA is presented below:

Selected Viewpoints

7.3 The scoping report proposed using the same viewpoints as used for the consented scheme, to help provide a comparison. Through consultation with Snowdonia National Park and DCC, a further three viewpoints were included, taking the total to 23 viewpoints. Visualisations for each of the selected viewpoints have been produced and are included in Volume 3 of the ES.

Snowdonia National Park

7.4 Topography would screen views of the proposed Brenig Wind Farm Tip Height Extension from many locations and where visible, it would typically occupy a small proportion of the view and be seen within a large scale landscape. Therefore it was found that the wind farm can be accommodated into the landscape without resulting in significant visual effects on the setting of the National Park.

Clwydian Range and Dee Valley AONB

7.5 From locations within the Clwydian Range and Dee Valley AONB, views of the proposed development would mostly be restricted to the western facing flanks of the Clwydian Hills. A total of 5 no. viewpoints within the AONB were assessed, including from the popular location of Jubilee Tower on Moel Famau (VP Q). The proposed development would not result in a significant effect on visual amenity due to the combination of distance, the large scale of the landscape in which it would be viewed and the small proportion of the view in which the development would be seen.

Page 11: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height Extension 18 May 2015 7

Area of Outstanding Beauty

7.6 The Cynwyd and Llandrillo Area of Outstanding Beauty (AOB) lies approximately 19.5 km from the proposed development. Due to the distance to the proposed development and the broad, large scale landscape in which the turbines would be viewed, they would not be a prominent feature and therefore there would be no significant effects on the AOB.

Special Landscape Area

7.7 Seven Special Landscape Areas (SLAs) are situated within 35 km of the proposed development. The proposed development is seen to have a significant effect on landscape character and visual amenity of only one SLA (Hiraethog). The Hiraethog SLA, which is located approximately 2.5 km from the proposed development and covers approximately 88 km

2, and effects are predicted to be restricted to

central areas of the SLA, including the eastern facing slopes that overlook Llyn Aled and Aled Isaf Reservoir. From these areas, the proposed development would be apparent and there may be a change in landscape character as the turbines would become a visually noticeable feature. However, the consented Brenig turbines to 100 m blade tip would also be equally as prominent and consequently there be no change to significance of effects on landscape character as a result of the increase in blade tip height to 110 m.

Landscapes of Outstanding Historic Interest and Landscapes of Special

Historic Interest

7.8 There are ten Landscapes of Outstanding Historic Interest located within 35 km of the proposed development, and five Landscapes of Special Historic Interest. Of these, only the Denbigh Moors Landscape of Special Historic Interest is seen to have significant impacts. The proposed turbines would be visible from central areas, western fringes that include the existing Moel Maelogen Wind Farm and eastern parts of the historic landscape including Llyn Brenig and lands immediately adjacent to the site boundary. Effects on this historic landscape are predicted to be most significant from these areas that lie immediately adjacent to the proposed development. However, there would be no change to significance of effects as a result of the increase in blade tip height to 110 m.

Registered Parks and Gardens of Special Historic Interest

7.9 There are a total of 15 Registered Parks and Gardens within the 35 km study area which are open to the public and have been assessed. Views of the proposed development would only theoretically be visible from Bodrhyddan, Gwaynynog and Pierce Memorial Garden. From these locations, views of the proposed development would likely be screened by mature vegetation. Effects on visual amenity are predicted to be not significant for all Registered Parks and Gardens.

Country Parks

7.10 There are five Country Parks located within 35 km of the proposed development. Of these, theoretical visibility is only expected at one, Moel Famau Country Park. Moel Famau Country Park is situated within the Clwydian Range and Dee Valley AONB, and due to the distance that the turbines would be viewed and the large scale landscape in which it would be seen, no significant effects on visual amenity are predicted.

National Trails/Long Distance Paths and National Cycle Routes

7.11 There is one National Trail, eight Long Distance Paths and four National Cycle Routes within 35 km of the proposed development.

Page 12: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height Extension 18 May 2015 8

7.12 The Offa’s Dyke Way runs 285 km and passes approximately 16 km from the proposed development, running along the Clwydian Range of hills. Viewpoints T, G and U illustrate views from the National Trail and it can be seen from these that whilst the proposed development would be noticeable, the scale of the landscape is such that it would not form a prominent feature and effects are predicted to be not significant.

7.13 Of the eight Long Distance Paths, only one (Clwydian Way) is seen to have significant effects caused by the proposed development, particularly where it runs along the western edge of Llyn Brenig and as it passes immediately adjacent to the southern edge of the proposed site boundary. Effects are predicted to be not significant from all other areas of the route.

7.14 Only one of the three National Cycle Routes (NCR 5) has theoretical visibility of the proposed development. All sixteen turbines are theoretically visible from the cycle route as it passes through Prestatyn and Rhyl, however in reality the views are predicted to be screened by the built environment and therefore effects are assessed as not significant.

Major Transport Routes

7.15 There are a number of primary roads within the 35 km study area from the proposed development, including: the A470, A494, A55, A5, A543, A544, A525 and A548. In addition to this, there are a number of secondary routes and minor roads, located primarily within the more low-lying, densely populated areas within the north and north-eastern parts of the study area.

7.16 Many of the primary routes noted run along valley floors and consequently there are no views of the proposed development from the following transport routes; A5, A496, A470, A548, A4086, A4212, , A549, A583, A5104, A5118 and the A5119. For other routes, views of the proposed development may be possible, however many of the views are intermittent and/or screened by vegetation and buildings and as such effects on visual amenity are not predicted to be significant. The only primary route where significant effects are predicted is for the A453. At a distance of approximately 2.8 km to the north- west, this is the closest major transport route to the site, where views of the proposed development would form a prominent feature from the carriageway. Any views however, are restricted to locations within the immediate vicinity of the proposed development. For other sections of the route effects on visual amenity are not predicted to be significant.

7.17 The B5401 runs immediately to the north of the proposed development and although not considered to be a major transport route within the study area, clear views of the proposed turbines would be available from sections of its route. Where views are available, the proposed turbines would be a defining feature of views east and effects on visual amenity would be significant. However, the consented Brenig turbines to 100 m blade tip would also be equally as prominent and consequently there be no change to significance of effects as a result of the increase in blade tip height to 110 m.

Landscape Character

7.18 The assessment on the Landscape Character was carried out using the NRW LANDMAP 2011 data and LANDMAP guidance note, which produced 28 Landscape Character Areas (LCAs) within 35 km of the proposed development to include in the assessment. Of these 28, only the Clocaenog Forest and Denbigh Moors LCAs were predicted to have significant landscape effects. However, the consented Brenig turbines to 100 m blade tip would also be equally as prominent and consequently there be no change to significance of effects on landscape character as a result of the increase in blade tip height to 110 m.

Page 13: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height Extension 18 May 2015 9

Visual Amenity

7.19 From the 23 viewpoints that were assessed in order to determine the effects on visual amenity during the operational phase of the project, significant effects were predicted from six. All of the six viewpoints (VPA, B E, H, J and R) are located within 5 km of the proposed development, however given their proximity to the proposed development and the scale of the development, effects of this significance would normally be anticipated from such close distances. However, it is predicted that effects on visual amenity from these six viewpoints as a result of the consented scheme would also be significant. Therefore it is considered that the proposed increase in tip height to 110 m would not result in a change in visual effects from that of the consented scheme.

7.20 Typically effects on visual amenity reduce with distance and from the remaining 17no. viewpoints it is predicted that effects would be not significant, including locations within Snowdonia National Park and the Clwydian Range and Dee Valley AONB.

Cumulative Effects

7.21 The proposed development is located within SSA A, identified within TAN 8 as technically, economically and environmentally suitable for large-scale wind farm developments. Therefore, as can be expected, much of the cumulative wind farm activity is confined to this area.

7.22 Significant cumulative effects on landscape character would predominately be restricted to locations within LCA 10 (Clocaenog Forest) and the adjacent LCA 9 (Denbigh & Derwen Hills) where the main cluster of existing, consented and submitted wind farms are located. Within these LCAs there would be an increase in wind farm development to the extents that it would become the defining feature. However, similar effects on the LCA that contain the proposed development and surrounding LCAs are predicted to occur following the construction of the consented scheme (100 m to blade tip) and therefore the increase in blade tip height to 110 m would have no fundamental additional effects on their character. For all other LCA’s no significant effects are predicted.

7.23 Significant cumulative effects on visual amenity are predicted at six of the 23 viewpoints used in the assessment, from where significant individual effects are predicted. From these locations the combination of all existing, consented and submitted wind farm developments, including the proposed development are typically predicted to occupy a significant proportion of the view and result in wind farm development becoming a defining feature. However, it is predicted that any cumulative effects on visual amenity would be no greater in significance that of the consented scheme and other existing, consented and proposed wind farms.

Residential Amenity

7.24 A Residential Visual Amenity Assessment (RVAA) was undertaken at the 12 properties within 2 km from the proposed turbines. The assessment concluded that due to the screening effects of topography and/or vegetation that restrict the number/proportion of turbines visible, there will be no significant effects, including cumulative effects, on visual amenity from six of these properties. The proposed development would form a prominent feature from the remaining six properties, four of these properties have particularly prominent views from outside areas, but two properties, namely Hafod Caradoc and Hafod Wen would feature the wind farm in their main views from the property at a distance of 1.16 km and 1.49 km respectively. At all of the properties, views of the consented scheme (100 m to blade tip) and the proposed scheme (110 m to blade tip) would be similar in terms of the number and proportion of each turbine that would be visible. Consequently there would be no change in the significance of effects on visual amenity as a result of the increase in blade tip height to 110 m.

Page 14: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height Extension 18 May 2015 10

Hydrology

7.25 The Hydrology assessment set out in Chapter 8 of the ES was carried out by Natural Power Consultants (NP) and assesses the effect of the proposed Brenig Wind Farm Tip Height Extension on the hydrological, hydrogeological and geological environment. The assessment covers the potential impacts caused by the proposed development over and above what is expected from the consented scheme, including the potential increase in crane hardstanding and turbine foundations areas.

7.26 The assessment also included a peat probing exercise across the site. This found that the majority of the site has shallow peat deposits, with the exception of turbine 14, where deep peat is located. It is proposed that an increased micrositing allowance is permitted solely for turbine 14, from 20 m to 50 m, to help minimise the potential impact on deep peat.

7.27 As part of the consent associated with the consented scheme a programme of water quality monitoring has been devised and implemented to monitor the potential impacts of the development on the hydrological environment. Through implementation of the proposed mitigation measures and best practice guidance, the significance of construction effects on all identified receptors is considered to be of negligible/minor significance. The significance of effects on the site hydrological and groundwater regime are not significant in terms of the EIA Regulations.

Ecological & Ornithological Assessment

7.28 Chapter 7 of the ES provides a description of the baseline ecological conditions present at the consented Brenig Wind Farm and its immediate surroundings and includes details of works completed to date towards discharge of ecological conditions under that consent. This chapter also describes the methods used and assesses the potential ecological effects associated with the proposed tip height extension

7.29 Ecological baseline conditions of the proposed development have been assessed through a combination of desk study and field survey work undertaken in 2015. This assessment has drawn heavily on the work undertaken to inform the consented scheme’s 2007 Environmental Statement (ES) and has targeted update survey work to confirm the continued relevance of its results. These targeted works primarily consisted of extended phase 1 habitat survey completed by Natural Power in January 2015, further informed by pre-construction bat surveys completed in 2012 and 2013.

7.30 Potential impacts will be mitigated through the application of best practice, and specific measures where necessary. Other than on bats, no significant effects are predicted as a result of constructing, operating and decommissioning of the proposed development either alone or in combination with other schemes in the region. For bats, potential significant effects are predicted for common and soprano pipistrelle and noctule species. With effective mitigation, the effects are reduced to be not significant in terms of the EIA regulations, however, a post construction monitoring programme is recommended to add certainty to these conclusions. A robust post-construction monitoring methodology has been committed to which includes undertaking carcass searches if these species are found to be flying at the rotor swept area. Should carcass searches find any bat corpses, a turbine curtailment system will be implemented, the details of which will be agreed with DCC and NRW.

7.31 The proposed development is considered unlikely to have a significant impact on designated sites in the surrounding area.

7.32 A robust suite of mitigation measures have been incorporated into the design, and further measures will be included into the Construction Method Statement. An Ecological Clerk of Works will be present on site during construction to ensure the works follow best practice.

Page 15: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height Extension 18 May 2015 11

7.33 A detailed Habitat Management Plan (HMP) has been agreed with DCC and NRW through discharge of planning condition 33 for the consented scheme, which would remain unchanged for the proposed development.

Noise

Introduction

7.34 Chapter 9 of the ES details the assessment of the potential acoustic impact of the proposed development, with particular reference to any nearby dwellings. This assessment was undertaken by Ion Acoustics Ltd.

7.35 The original Brenig Environmental Statement in 2007 detailed noise levels at six locations around the site. There have been several noise surveys in the area carried out since 2006 in relation to other wind farm proposals and it has been agreed with DCC and their noise consultant, that a further baseline survey was unnecessary. The baseline environment around the site was determined in relation to the other noise surveys, including those of the consented Brenig scheme, Tir Mostyn, Gorsedd Bran, Clocaenog Forest and Pant y Maen wind farms and the proposed Brenig Wind Farm in isolation.

7.36 The predicted noise levels have been calculated using a candidate turbine with a maximum height to tip of 110 m. This candidate turbine, Senvion MM92 in mode Type B, has been used based upon the manufacturer's warranted data. The turbine was selected as it represents a worst-case scenario in terms of noise out of the currently available models within the design criteria. An assessment of the potential noise impact has been carried out based upon the above and taking into account published guidance for assessment of noise from wind turbines.

The Assessment and Rating of Noise from Wind Farms: ETSU-R-97

7.37 ETSU-R-97, The Assessment and Rating of Noise from Wind Farms, presents the recommendations of the Working Group on Noise from Wind Turbines, set up in 1993 by the Department of Trade and Industry (DTI) as a result of difficulties experienced in applying the noise guidelines existing at the time to wind farm noise assessments. The group comprised independent experts on wind turbine noise, wind farm developers, DTI personnel and local authority Environmental Health Officers. In September 1996 the Working Group published its findings by way of report ETSU-R-97. This document describes a framework for the measurement of wind farm noise and contains suggested noise limits, which were derived with reference to existing standards and guidance relating to noise emission from various sources.

7.38 For day-time periods, the noise limit is 35-40 dB (A) or 5 dB (A) above the 'quiet day-time hours' prevailing background noise, whichever is the greater. The actual value within the 35-40 dB(A) range depends on the number of dwellings in the vicinity; the effect of the limit on the number of kWh generated; and the duration of the level of exposure. For this project, 35 dB (A) or 5 dB (A) above the prevailing background noise has been proposed.

7.39 For night-time periods, the external noise limit is 43 dB LA90 or 5 dB (A) above the background, whichever is the greater. The 43 dB (A) limit was based on an old World Health Organisation (WHO) noise standard to protect sleep of 35 dB LAeq inside rooms, which was converted to an external noise level of 43 dB by the addition of +10 dB to account for sound insulation of an open window and with 2 dB subtracted to account for the use of the LA90 [noise level exceeded for 90% of the measurement

Page 16: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height Extension 18 May 2015 12

time] parameter rather than LAeq [an average noise level over a time period]. However, for this project, a lower night-time limit of 40 dB LA90 is proposed which is consistent with the WHO advice

4.

Institute of Acoustics’ Good Practice Guide to the Application of ETSU-R-97

7.40 In May 2013 the Institute of Acoustics published the “Good Practice Guide to the Application of ETSU-R-97 for the Assessment and Rating of Wind Turbine Noise”, which was endorsed by the Welsh Government in May 2013. The noise assessment was carried out utilising the methodologies stated within this good practice guide.

Assessment of Noise Levels in Accordance with ETSU-R-97

7.41 Predicted turbine noise levels at selected receptor locations neighbouring the proposed development indicate that turbine noise will meet the requirements of ETSU-R-97 for the amenity hours and night-time operation periods defined within ETSU-R-97 for all properties.

7.42 A cumulative assessment was also carried out, which found that the proposed development would only cause a small cumulative effect, due primarily to its distance from the other wind farms and single wind turbines.

7.43 Noise levels have been set as a condition of the consented Brenig Wind Farm and the increase in turbine tip heights will make no change to these.

Conclusion

7.44 Predicted turbine noise levels and measured background noise levels indicate that for all receptors neighbouring the proposed development, wind turbine noise will meet the Day-time hours and Night-time hours Noise Criteria specified in ETSU-R-97. Cumulative impacts meet ETSU-R-97 criteria. Noise from construction activities is seen to be of negligible significance.

Shadow Flicker

7.45 With reference to Section 9.9 of Chapter 9 of the ES the shadow flicker assessment was carried out by Natural Power. Using the Department for Energy and Climate Change guidance criteria, only one property was required to be assessed, Ty Newydd. The assessment methodology used worst-case assumptions, for example that the sun is always shining (no clouds) during daylight hours, the turbines will always be turning and that the turbines and the sun will always be aligned to produce maximum shadow, amongst others. It was found that only one of the 16 turbines could possibly cause shadow flicker at Ty Newydd, and this would be for an annual total of 16 hours. The theoretical maximum duration that shadow flicker could occur in a day at Ty Newydd is 30 minutes. Predac, which are a European Union sponsored organisation that promotes best practice in Energy use and supply, recommends that shadow flicker does not exceed 30 hours per year or 30 minutes per day (Predac, 2003)

5.

7.46 Due to the only potentially affected dwelling having relatively low number of shadow flicker hours per year and the conservative approach to the calculation, it is therefore concluded that the proposed development would not cause a material reduction to residential amenity owing to shadow flicker.

4 World Health Organisation, 1999. Guidelines for Community Noise.

5 Predac (2003) Spatial Planning of Wind Turbines Report, Available Online at

http://www.cler.org/IMG/pdf/WP8_ANG_guide.pdf (last accessed 11/03/2015)

Page 17: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height Extension 18 May 2015 13

Cultural Heritage

7.47 The cultural heritage assessment, detailed in Chapter 10 of the ES, was carried out by Clwyd-Powys Archaeological Trust. It considered the potential direct and indirect impacts of the proposed development upon undesignated and designated cultural heritage assets. Designated assets included World Heritage Sites, Scheduled Ancient Monuments, Listed Buildings, Registered Historic Parks and Gardens, Registered Historic Landscapes and Conservation Areas. Potential impacts upon the physical fabric and setting of assets have been considered.

7.48 The ES for the consented development included a chapter on cultural heritage, prepared by CPAT in 2006. The original assessment included a desk-based study and field survey, which established the baseline conditions. This identified 16 heritage assets within the project boundary and potential direct impacts were generally mitigated during the design phase, although for a number of assets further mitigation, in the form of demarcation, was recommended during the felling of the surrounding forestry. Felling operations will have been completed as part of the consented scheme, which includes a programme of mitigation for demarcation and avoidance of heritage assets, and thus have no additional potential impacts with respect to the revised proposal. The current assessment has reviewed the original data, which has been updated as appropriate, taking into account new information which has been made available since 2006.

7.49 An Assessment of the Significance of Impacts of Development on Historic Landscape (ASIDOHL2) on the Mynydd Hiraethog Historic Landscape was also undertaken.

7.50 Within the development area there are 16 undesignated cultural heritage assets, all of which were taken into consideration during the development of the layout for the consented scheme in order to minimise potential direct impacts. One is considered to be of medium value, five are considered to be of low value and nine of negligible value. The final could not be located during field survey and may be mislocated.

7.51 Within 10 km of the proposed development there are 47 scheduled ancient monuments, 412 listed buildings (all grades), seven registered parks and gardens, two registered historic landscapes and six conservation areas.

7.52 Of the 47 scheduled ancient monuments within 10 km of the proposed development, only 32 will have any view of the consented or proposed turbines. With respect to the consented scheme the significance of the visual impact is considered to be:

Slight in 14 cases;

Moderate or slight in 10 cases;

Moderate or large in four cases; and

In only three cases, Bwlch-Du Round Barrow (DE 085) and two assets at Hen Ddinbych (DE 086

and DE087), is the significance of the visual impact is considered to be large or very large, and

thus significant in terms of the EIA Regulations.

7.53 The proposed tip height extension is considered to have a neutral impact on all but one of the scheduled ancient monuments, the exception being Bedd Emlyn (DE201) where limited visibility of the turbine tips would be introduced, although the significance of this impact is considered to be only slight.

7.54 With regard to listed buildings the assessment has identified 412 within 10 km of the proposed development, of which only 63 will have any view of the consented or proposed turbines. Consideration has been given to the potential visual impacts on the buildings themselves as well as their setting. With respect to the consented scheme there is only one case, that of Bwlch-du (LB 20994), where the significance of the visual impact is considered to be large or very large and thus

Page 18: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height Extension 18 May 2015 14

significant in EIA terms, while in five cases the impact considered to be moderate or slight, and in the remaining 20 cases it is slight. The proposed tip height extension will introduce limited visibility of the turbines for two listed buildings where the consented scheme had no intervisibility, although in both cases the significance of this impact is considered to be slight.

7.55 The assessment of visual and cumulative effects has considered firstly the impact of the consented 100 m turbines and then the potential difference between this and the impact of the proposed 110 m turbines. It is clear that with distance the difference between the two tip heights will be increasingly indistinguishable, although in some instances the increased tip height would introduce new or more extensive intervisibility to certain designated assets. With the exception of the Mynydd Hiraethog registered historic landscape, there are only five other designations within 2 km of the Development Area and even in those cases the increased tip height is considered to be insufficient to raise the level of significance for the visual or cumulative impacts. In summary, therefore, it is considered that the proposed increase in turbine tip height will result in no change to the significance of the indirect impacts for all but two designated heritage assets, the exceptions being listed buildings 16175 and 22688 where the added height will extend the visibility of the turbines to include the assets, although only resulting in a slight visual impact.

7.56 The ASIDHOL2 report has concluded that the significance of the impact on the registered historic landscape of Mynydd Hiraethog in its entirety is slight to moderate, while the significance of the impact on the Vale of Clwyd registered historic landscape is assessed as moderate, these being based on the grading system developed specifically for the ASIDOHL2 process. It should be noted that the ASIDOHL2 process employs a seven-level grading system, with ‘moderate’ being the third lowest.

7.57 The residual impacts of the proposal have already been considered as part of the consented scheme and, assuming that the mitigation strategy is applied, there are not considered to be any significant impacts from either the consented or proposed schemes with regard to the cultural heritage.

Traffic and Transport

7.58 Chapter 11 of the ES considers the potential effects of the proposed development on traffic and transport. It sets out the assessment methodology adopted, defines existing conditions in the Study Area and summarises predicted effects, prior to and following the application of mitigation measures.

7.59 The proposed route from Ellesmere port to the A5 is covered by the Mid-Wales Strategic Traffic Management Plan, and since the route has been assessed and agreed as suitable by the relevant roads authorities for turbines in this range to access the mid-Wales wind farm search areas, it was considered that this part of the route did not require further assessment as part of the EIA.

7.60 After joining the A5, the route follows this road for approximately 50 km before joining the A543 at a junction just east of the village of Pentrefoelas. The route follows the A543 for approximately 12 km before reaching the B4501. Access to the site will be gained from the B4501.

7.61 The assessment examines the baseline traffic setting and investigates the potential impacts of increased traffic and Heavy Goods Vehicles (HGVs), driver delay, road safety and dilapidation of road structure at six locations along rural road stretches and in urban areas on the A5, A543, and B4501.

7.62 The assessment concluded that the traffic effects during construction, operation and decommissioning of the proposed development will be of negligible significance, similar to that found for the original consented Brenig Wind Farm project.

7.63 In addition, the assessment gives consideration to the cumulative effects of other similar projects possessing concurrent construction schedules. It is not possible to determine exactly if or when these cumulative proposed developments may be constructed, or their programme and phasing of operations. If similar construction operations were to occur concurrently, the traffic effects on these

Page 19: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height Extension 18 May 2015 15

routes would increase. However, the above detailed assessment of traffic effects due to the proposed development concluded that all traffic effects were predicted to be negligible (and below the thresholds for significance in EIA terms). Therefore, it is considered that there is considerable “headroom” in the capacity of the receptors to accommodate these short term rises in traffic flows. Furthermore, it is proposed that if the construction of another wind farm site were to coincide with that of the proposed development and was considered to have an unacceptable joint impact, then discussions would be held between developers and other relevant parties (in conjunction with the Roads Authority) prior to the commencement of the projects, with a view to mitigating any such effects, and would be managed through the Traffic Management Plan (TMP).

Communications, Aviation and Defence

Communications

7.64 Consultation identified that no radio communications links in the vicinity of the application site would be affected by the proposed development. Therefore, the effect on radio communication links is considered to be not significant.

Terrestrial Television

7.65 GTech Surveys were commissioned to identify any possible impacts to the reception of television services arising from the consented scheme, in order to discharge planning condition 31.. In summary the report concludes that no interference is possible to the reception of analogue television services, as these were switched off during the Digital Television Switchover that took place throughout the region during 2009. In addition, no interference has been identified for any local digital satellite television viewers as there are no residential properties located in any areas where signal shadowing could occur. Potential interference exists for some Freeview viewers situated in certain areas around the site. In these locations, the presence of unwanted signal reflections and interactions from the rotating wind turbine blades could disrupt Freeview reception.

7.66 In the unlikely event that any impacts on household TV reception were to occur, then the applicant would make a commitment to conduct a survey of those properties likely to be affected by the turbines and, if necessary, to restore any affected properties to normal service, as previously agreed as a condition to the existing planning consent. Mitigation against impacts to television reception may include in some case upgrading to a modern professionally installed antenna system, or the provision of digital satellite television receiving equipment, the operation of which cannot be impacted in any way by the wind farm.

Aviation and Defence

7.67 Both National Air Traffic Services (NATS) and the Ministry of Defence (MoD) were consulted about the proposed development. NATS confirmed the potential for impact on the St Annes and Great Dun Fell radars, however the anticipated impact is deemed to be acceptable. The MoD expressed concerns that the wind farm might interfere with services. As such, a detailed aviation assessment of the proposed development and its potential impacts on these services was undertaken by an aviation specialist, Aviatica Ltd.

7.68 The MoD had expressed concerns that the proposed turbines will be detectable by the Warton Primary Surveillance Radar (PSR) and may also impact low flying aircraft. The detailed aviation report states that the BAE Systems Warton air traffic control is not a designated air traffic services provider for the airspace at any altitude above the proposed development site and as such, controllers at Warton do not normally provide air traffic services in the airspace above and in the vicinity of the proposed development.

Page 20: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Brenig Wind Farm Tip Height Extension 18 May 2015 16

7.69 The proposed development will not add to the area subject to unidentified primary radar returns on the Warton PSR, since it consists solely of an increase in the turbine tip height of the consented scheme. The Warton PSR also has line of sight to the existing turbines at Moel Maelogen and Tir Mostyn and to the consented turbines at Clocaenog Forest. All of these developments have been deemed acceptable by the MoD. Consequently, it is concluded that the proposed development will not have a material impact on the provision of air traffic radar services by Warton.

7.70 The proposed development site is in an area annotated on the MoD pre-planning guidance map of the UK Military Low Flying System as a “low priority low flying area less likely to raise concerns”. In addition, further assessment on this matter reveals that the proposed development site is not in an area where topographical constraints, low flying avoidance areas, one-way flow corridors or specialist low flying requirements impose constraints on the ability of low flying aircraft to avoid obstacles. Accordingly, it is concluded that the development will not have a significant impact on military low flying.

Page 21: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

Hafotty Ucha

Wern DduCwm Pennaner

Moel Maelogen

Moel Maelogen II

Nant Bach

Derwydd Bach

Cerrig Oerion

ClocaenogTir Mostyn

Pant y Maen

Ty IsaTy Isa

Meifod

Ty Gwyn

Cae GwynCil Llwyn

Maes Truan

Wern Uchaf

Tyn y CelynTyn y Celyn

Tain Y Foel

Hafodty Ddu

Ty Ucha Llyn

Maesgwyn UchaDisgarth Ucha

Tyn y Ffynnon

Maestyddyn Isa

Gwaenynog Bach

Cefnhirfynydd Isa

Hendre Llwyn y Maen

land north of Caerhafod Isaf

Cwrt y LlynFron Isaf

Penglogor

Cae'r Weirglodd

Land adj to Clocaenog ForestPentre Draw

Land at Cilgoed

Fron Bella

290000

290000

300000

300000

310000

310000

3500

0036

0000

3700

00

Project:Brenig Wind Farm Tip Height Extension,DenbighshireTitle:Figure 1: Regional Context

Ref: GB200464_M_001_E

Date: 04-05-15

Contains Ordnance Survey data © Crown copyright and database right 2015.

Drawing by:Natural Power Consultants LtdHarbour HouseY LanfaAberystwyth SY23 1ASTel: 01970 636869Email: [email protected]

Prepared by: CT Checked by: JB

Notes:a) Information on this map is directly reproduced from digital and other material from different sources. Minor discrepancies may therefore occur. Where furtherclarification is considered necessary, this is noted through the use of text boxeson the map itself.b) For the avoidance of doubt and unless otherwise stated:

1. where a line recorded in the key demarcates a boundary on this plan, the boundary edge is the outside edge of the line.2. where a line or feature recorded in the key of this plan is also shown as a line or feature by the Ordnance Survey, and that line or feature is located in a different position on the ground than shown by the Ordnance Survey, then the line or feature shall be deemed to follow the position as existing on the ground.3. this plan should be used for identification purposes only, unless specifically stated above or in accompanying documentation.4. Natural Power Consultants Ltd. accepts no responsibility for the accuracy of data supplied by third parties.

Scale @ A3: 1:100,000

KeySite boundaryConsented turbine locationLocal authority boundaryIndicative TV transmitter link (1)Indicative micropath (2)Long distance footpathNational Trail (3)Electricity power line (5)Tan 8 Strategic Search AreaRegistered Common Land (3)Open Access Countryside (3)Historic Landscape Area (4)Scheduled Ancient Monument (4)Area of Outstanding Natural Beauty (3)National Nature Reserve (3)Country Park (3)Special Area of Conservation (3)Special Protection Area (3)Parks & Gardens (4)Parks & Gardens (Essential Setting) (4)SSSI (3)National Park (3)

Cumulative turbinesOperationalConsentedSubmitted

0 2.5 51.25 km

Coordinate System: British National Grid

Source data reproduced with the permission of:(1) BBC (2) Ofcom (3) Natural Resources Wales (4) Cadw (5) National Grid plc

Layout: 260107_16t_A

Page 22: Brenig Wind Farm Tip Height Extension - IEMA · Brenig Wind Farm Tip Height Extension 18 May 2015 2 chosen for their knowledge and understanding of the local environment and their

BPD

BPC

BPB

BPA

T9

T8

T7

T6

T5

T4

T3

T2

T1

T16

T15

T14T13

T12

T11

T10

298000

298000

299000

299000

300000

300000

301000

301000

3570

0035

8000

3590

00

Project:Brenig Wind Farm TipHeight Extension, DenbighshireTitle:Figure 2: Site Layout

Ref: GB200464_M_103_G

Date: 05-05-15

© Crown Copyright 2015. All rights reserved. Ordnance Survey Licence 0100031673.

Drawing by:Natural Power Consultants LtdHarbour HouseY LanfaAberystwythSY23 1AS, UKTel: 01970 636869Email: [email protected]

Prepared by: CT Checked by: JB

Notes:a) Information on this map is directly reproduced from digital and other material from different sources. Minor discrepancies may therefore occur. Where furtherclarification is considered necessary, this is noted through the use of text boxeson the map itself.b) For the avoidance of doubt and unless otherwise stated:

1. where a line recorded in the key demarcates a boundary on this plan, the boundary edge is the outside edge of the line.2. where a line or feature recorded in the key of this plan is also shown as a line or feature by the Ordnance Survey, and that line or feature is located in a different position on the ground than shown by the Ordnance Survey, then the line or feature shall be deemed to follow the position as existing on the ground.3. this plan should be used for identification purposes only, unless specifically stated above or in accompanying documentation.4. Natural Power Consultants Ltd. accepts no responsibility for the accuracy of data supplied by third parties.

Scale @ A3: 1:12,500

KeySite boundaryConsented turbine locationConsented anemometry mast locationExisting forest roads to be upgradedConsented new tracksConsented new track (not to be used for turbine delivery)Consented switchgear & metering building locationConsented construction compoundPotential borrow pit location

0 250 500125 m

Coordinate System: British National Grid

Layout: 260107_16t_A