DOCUMENT 5.10 Environmental Statement Chapter 10 Historic Environment National Grid (North Wales Connection Project) Regulation 5(2)(a) including (l) and (m) of the Infrastructure Planning (Applications: Prescribed Forms and Procedure) Regulations 2009 Application Reference EN020015 September 2018 Environmental Statement Chapter 10 Historic Environment Document 5.10 i Proposed Development Volume 5.10 Document 5.10 Chapter 10 Historic Environment National Grid National Grid House Warwick Technology Park Gallows Hill Warwick CV34 6DA Final September 2018 North Wales Connection Project Environmental Statement Chapter 10 Historic Environment Document 5.10 ii Page intentionally blank North Wales Connection Project Environmental Statement Chapter 10 Historic Environment Document 5.10 iii Document Control Document Properties Organisation Wood Author Mike Glyde Approved by Simon Atkinson Title Environmental Statement Chapter 10 Historic Environment Document Reference 5.10 Version History Date Version Status Description/Changes September Rev A Final Final for submission 2018 North Wales Connection Project Environmental Statement Chapter 10 Historic Environment Document 5.10 iv Page intentionally blank North Wales Connection Project Environmental Statement Chapter 10 Historic Environment Document 5.10 v Contents 1 Introduction 1 2 Legislation and Planning Policy 3 2.1 Introduction 3 2.2 Legislation 3 2.3 National Policy 5 2.4 Local Planning Policy 9 3 Scope of Assessment and Consultation 10 3.1 Introduction 10 3.2 Secretary of State’s Scoping Opinion 10 3.3 Consultation 13 3.4 Welsh Language 14 3.5 Scope of Assessment 14 4 Methodology 18 4.1 Introduction 18 4.2 Guidance Specific to Historic Environment 18 4.3 Baseline Data Gathering and Forecasting Methods 23 4.4 Assessment Criteria 27 4.5 Assumption and Limitations 31 5 Basis of Assessment 32 5.1 Introduction 32 5.2 Flexability Assumptions 32 5.3 Consideration of Scenarios 36 5.4 Sensitivity Test 38 6 Study Area 39 6.1 Introduction 39 7 Baseline Conditions 40 7.1 Introduction 40 7.2 Future Baseline Predictions 40 7.3 Historic Environment Baseline 40 7.4 Identified and Potential Assets within the Order Limits 52 7.5 Assets Included in the Settings Assessment 83 7.6 Dinorwig Registered Landscape of Outstanding Historic Interest 192 8 Potential Effects 194 8.1 Introduction 194 8.2 Summary of Potential Effects 194 North Wales Connection Project Environmental Statement Chapter 10 Historic Environment Document 5.10 vi 9 Mitigation and Residual Effects 196 9.1 Introduction 196 9.2 Mitigation 196 9.3 Archaeological Strategy 199 9.4 Assessment of Assets subject to Direct Disturbance 200 9.5 Effects Arising Through Change to Setting 226 9.6 Effects on Historic Landscape 299 10 Cumulative Effects 301 10.1 Introduction 301 10.2 Intra Project Cumulative Effects 301 10.3 Inter Project Cumulative Effects 301 11 Summary 316 11.1 Direct Disturbance of Assets 316 11.2 Effects Arising Through Change to Setting 316 11.3 Effects on Historic Landscape 317 1. References 329 FIGURES Figure 10.1 Designated Heritage Assets Document 5.10.1.1 Figure 10.2 Non-designated Heritage Assets Document 5.10.1.2 Figure 10.3 Extent of Geophysical Survey Document 5.10.1.3 Figure 10.4 Geophysical Survey Results Document 5.10.1.4 Figure 10.5 Trial Trench Locations Document 5.10.1.5 Figure 10.6 Assets included in the Settings Assessment Document 5.10.1.6 Figure 10.7 Dinorwig Landscape of Outstanding Historic Document 5.10.1.7 Interest Figure 10.8 Location of recorded archaeological remains Document 5.10.1.8 in relation to Proposed Development’ Figure 10.9 Location of assets in relation to Proposed Document 5.10.1.9 Development North Wales Connection Project Environmental Statement Chapter 10 Historic Environment Document 5.10 Page 1 1 Introduction 1.1 INTRODUCTION This chapter presents information about the effects on the historic environment that have been identified, that could result from the Proposed Development (as described in Chapter 3 Description of the Proposed Development (Document 5.3) and Chapter 4 Construction, Operation, Maintenance and Decommissioning (Document 5.4)). This chapter is supported by a number of Appendices as listed below: Appendix 10.1 Desk Study (Document 5.10.2.1) Appendix 10.2 Geophysical Survey Report (Document 5.10.2.2) Appendix 10.3 Assessment of the Significance of Impacts of Development on Historic Landscape ASIDOHL (Document 5.10.2.3) Appendix 10.4 Cadw Designation Descriptions (Document 5.10.2.4) Appendix 10.5 Photographs (Document 5.10.2.5) Appendix 10.6 Development Plan Policies (Document 5.10.2.6) Appendix 10.7 Trial Trenching Report (Document 5.10.2.7) Appendix 10.8 Coed Nant-y-Garth (CN375) and Fodol Ganol (CN175) Wirelines (Document 5.10.2.8) The historic environment is defined in National Policy Statement (NPS) EN-1, as: ‘All aspects of the environment resulting from the interaction between people and places through time, including all surviving physical remains of past human activity, whether visible, buried or submerged, and landscaped and planted or managed flora.’ Following a summary of relevant policy and legislation, this chapter describes the study areas that have been adopted and the scope of the assessment and the consultation process that has been undertaken. The baseline data gathering methodology and the methodology for establishing the significance North Wales Connection Project Environmental Statement Chapter 10 Historic Environment Document 5.10 Page 2 of any effects in Environmental Impact Assessment (EIA) terms is then described. The chapter then includes a description of the overall historic environment baseline conditions. Subsequent sections of this chapter describe the potential effects on the historic environment, the mitigation and other measures that would be adopted, and the resulting residual effects. Cumulative effects with other developments are also described and the chapter concludes with a summary of effects. Other chapters that are useful to review in association with this chapter are Chapter 7 Landscape (Document 5.7) and Chapter 8 Visual (Document 5.8), which includes details on visual changes associated with the Proposed Development with some overlap in the receptors included in the settings assessment with in this chapter. Chapter 13 Traffic and Transport (Document 5.13) includes details on construction traffic, which is relevant to changes in the settings of some historic environment receptors during the construction phase. Similarly, Chapter 15 Construction Noise (Document 5.15) includes details on construction noise, which again relates to changes in setting. Reference has also been made to Chapter 16 Operational Noise (Document 5.16) and based on the conclusions of that chapter, operational noise will not contribute to a change in setting of any historic assets. Control and management measures in relation to archaeology are described in the Archaeological Strategy (Document 7.8) and the Construction Environmental Management Plan (Document 7.4). All technical terms and abbreviations used within this chapter are defined in the Glossary (Document 1.4). North Wales Connection Project Environmental Statement Chapter 10 Historic Environment Document 5.10 Page 3 2 Legislation and Planning Policy 2.1 INTRODUCTION This section sets out the legislative and planning policy framework that is relevant to the historic environment assessment. A full review of compliance with national and local planning policy is provided in the Planning Statement (Document 7.14) and a full review of relevant legislation is set out in the Legislation Compliance Audit (Document 5.28.2.1). Relevant national policy considerations for the Proposed Development are of greatest importance and are set out at Table 10.1, with a description of how and where these policy requirements have been addressed in the chapter. 2.2 LEGISLATION The importance of cultural heritage and archaeology is recognised in legislation and heritage assets that are deemed to be of particular importance are given legal protection. Historic Environment (Wales) Act 2016 The Historic Environment (Wales) Act 2016 was passed to amend existing UK legislation (Ancient Monuments and Archaeological Areas Act 1979 and the Planning (Listed Buildings and Conservation Areas) Act 1990) within Wales and to provide additional provisions for the protection and management of the historic environment. The ‘Register of Parks and Gardens of Special Historic Interest in Wales’ was first published as a series of county volumes between 1994 and 2002 (Ref 10.23), with additional sites added to the register in 2007. Sites are graded from Grade I to II* in the same way as listed buildings. The Register was initially established as a non-statutory register but was made a statutory register through the Historic Environment (Wales) Act 2016. However, there is no specific consents regime, or other statutory protection afforded to assets included on the Register. The Historic Environment (Wales) Act 2016 also provided a statutory bassis to the need to maintain Historic Environment Records. North Wales Connection Project Environmental Statement Chapter 10 Historic Environment Document 5.10 Page 4 Ancient Monuments and Archaeological Areas Act 1979 Under the Ancient Monuments and Archaeological Areas Act 1979, as subsequently amended by the National Heritage Acts 1983 and 2002, sites assessed to be of national importance are required to be compiled in a Schedule of Monuments. These sites are accorded statutory protection and