A47 Wansford to Sutton EIA Scoping Report
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A47 Wansford to Sutton EIA Scoping Report PINS project reference number: TR010039 Highways England document reference: HEWNSFRD-MMSJV-EGN-000-RP-LX-00002 Date: February 2018 Version: P02 A47 Wansford to Sutton Document Control Document Title EIA Scoping Report Originator Ben O’Hickey, Mott MacDonald Sweco Joint Venture Checker Jacqueline Fookes, Mott MacDonald Sweco Joint Venture Approver Giles Hewson, Mott MacDonald Sweco Joint Venture Authoriser Stefan Craciun, Mott MacDonald Sweco Joint Venture Distribution The Planning Inspectorate Document Status Final Revision History Version Date Description Author P01 December 2017 First Draft B. O’Hickey P02 February 2018 Final B. O’Hickey Reviewer List Name Role Jose Antonio Garvi- Senior Environmental Advisor, Highways England Serrano Alan Nettey Development Consent Order and Statutory Process Manager, Highways England Aaron Douglas Project Manager, Highways England Gavin Williams Geotechnical Advisor, Highways England Approvals Name Signature Title Date of Version Issue Guy Lewis Programme Leader The original format of this document is copyright to the Highways England. EIA Scoping Report Page 2 of 177 A47 Wansford to Sutton Table of Contents 1 Introduction 7 1.1 Purpose of the Report 7 1.2 Proposed Scheme Location 7 1.3 Proposed Scheme Overview 8 1.4 Approach to EIA Scoping 8 1.5 Legislative Context and the need for Environmental Impact Assessment 9 1.6 Approach to Assessment 10 1.7 Population and Human Health 12 1.8 Major Accidents and Disasters 13 1.9 Heat and Radiation 14 1.10 Transboundary Screening Matrix 15 1.11 Planning Policy Context 16 2 The Proposed Scheme 19 2.1 The Need for the Proposed Scheme 19 2.2 Proposed Scheme Objectives 19 2.3 Proposed Scheme Location 20 2.4 Proposed Scheme Description 20 2.5 Timescales 21 3 Consideration of Alternatives 22 3.1 Alternative Options Considered 22 3.2 Option Taken Forward – the Proposed Scheme 24 4 Consultation 25 4.1 Consultation Undertaken to Date 25 4.2 Proposed Consultation 26 5 Air Quality 27 5.1 Introduction 27 5.2 Study Area 27 5.3 Existing and Baseline Knowledge 28 5.4 Assumptions and Limitations 31 5.5 Guidance and Best Practice 32 5.6 Consultation 33 5.7 Potential Effects, including Monitoring and Mitigation Measures 33 5.8 Proposed Level and Scope of Assessment 34 5.9 Proposed Methodology including Significance 35 5.10 Conclusion 37 6 Cultural Heritage 38 6.1 Introduction 38 6.2 Study Area 38 6.3 Existing and Baseline Knowledge 38 6.4 Assumptions and Limitations 40 6.5 Guidance and Best Practice 41 6.6 Non-statutory Consultation 41 6.7 Potential Effects, including Monitoring and Mitigation Measures 42 6.8 Proposed Level and Scope of Assessment 42 6.9 Proposed Methodology including Significance 43 6.10 Conclusion 44 7 Landscape 46 7.1 Introduction 46 EIA Scoping Report Page 3 of 177 A47 Wansford to Sutton 7.2 Study Area 46 7.3 Existing and Baseline Knowledge 46 7.4 Assumptions and Limitations 48 Assumptions and Limitations 48 7.5 Guidance and Best Practice 48 7.6 Consultation 48 7.7 Potential Effects, including Monitoring and Mitigation Measures 49 7.8 Proposed Level and Scope of Assessment 51 7.9 Proposed Methodology including Significance 51 7.10 Conclusion 55 8 Biodiversity 56 8.1 Introduction 56 8.2 Study Area 56 8.3 Existing and Baseline Knowledge 57 8.4 Assumptions and Limitations 65 8.5 Guidance and Best Practice 65 8.6 Consultation 66 8.7 Potential Effects, including Monitoring and Mitigation Measures 66 8.8 Proposed Level and Scope of Assessment 68 8.9 Proposed Methodology including Significance 73 8.10 Conclusion 73 9 Geology and Soils 75 9.1 Introduction 75 9.2 Study Area 75 9.3 Existing and Baseline Knowledge 75 9.4 Assumptions and Limitations 80 9.5 Guidance and Best Practice 80 9.6 Consultation 81 9.7 Potential Effects, including Monitoring and Mitigation Measures 81 9.8 Proposed Level and Scope of Assessment 81 9.9 Proposed Methodology including Significance 82 9.10 Conclusion 86 10 Materials 87 10.1 Introduction 87 10.2 Study Area 87 10.3 Existing and Baseline Knowledge 87 10.4 Assumptions and Limitations 88 10.5 Guidance and Best Practice 88 10.6 Consultation 89 10.7 Potential Effects, including Monitoring and Mitigation Measures 89 10.8 Proposed Level and Scope of Assessment 92 10.9 Proposed Methodology including Significance 92 10.10 Conclusion 93 11 Noise and Vibration 94 11.1 Introduction 94 11.2 Study Area 94 11.3 Existing and Baseline Knowledge 94 11.4 Assumptions and Limitations 96 11.5 Guidance and Best Practice 96 11.6 Consultation 97 11.7 Potential Effects, including Monitoring and Mitigation Measures 97 EIA Scoping Report Page 4 of 177 A47 Wansford to Sutton 11.8 Proposed Level and Scope of Assessment 97 11.9 Proposed Methodology including Significance 97 11.10 Conclusion 100 12 People and Communities 101 12.1 Introduction 101 12.2 Study Area 101 12.3 Existing and Baseline Knowledge 102 12.4 Assumptions and Limitations 105 12.5 Guidance and Best Practice 106 12.6 Consultation 106 12.7 Potential Effects, Including Monitoring and Mitigation Measures 106 12.8 Proposed Level and Scope of Assessment 113 12.9 Proposed Methodology including Significance 113 12.10 Conclusion 124 13 Road Drainage and the Water Environment 127 13.1 Introduction 127 13.2 Study Area 127 13.3 Existing and Baseline Knowledge 127 13.4 Assumptions and Limitations 130 13.5 Guidance and Best Practice 130 13.6 Consultation 131 13.7 Potential Effects, including Monitoring and Mitigation Measures 131 13.8 Proposed Level and Scope of Assessment 135 13.9 Proposed Methodology including Significance 136 13.10 Conclusion 142 14 Climate 144 14.1 Introduction 144 14.2 Study Area 145 14.3 Existing and Baseline Knowledge 146 14.4 Assumptions and Limitations 148 14.5 Guidance and Best Practice 148 14.6 Consultation 149 14.7 Potential Effects, including Monitoring and Mitigation Measures 149 14.8 Proposed Level and Scope of Assessment 150 14.9 Proposed Methodology including Significance 150 14.10 Conclusion 152 15 Combined and Cumulative Effects 153 15.1 Introduction 153 15.2 Study Area 153 15.3 Existing and Baseline Knowledge 154 15.4 Assumptions and Limitations 154 15.5 Guidance and Best Practice 154 15.6 Consultation 154 15.7 Potential Effects, including Monitoring and Mitigation Measures 154 15.8 Proposed Level and Scope of Assessment 156 15.9 Proposed Methodology including Significance 156 15.10 Conclusion 158 16 Conclusions 160 17 References 169 Appendix A – DCO Site Boundary 173 Appendix B - Environmental Constraints Plan 174 EIA Scoping Report Page 5 of 177 A47 Wansford to Sutton Appendix C - Lighting Impact Assessment Methodology 175 EIA Scoping Report Page 6 of 177 A47 Wansford to Sutton 1 Introduction 1.1 Purpose of the Report 1.1.1 Scoping is an important part of the Environment Impact Assessment (EIA) process and determines which environmental topics are to be examined during the course of the assessment and reported in the Environmental Statement (ES). 1.1.2 This Scoping Report describes how the EIA will be undertaken, and identifies the technical environmental disciplines that will be considered. Defining the environmental scope is one of the most critical parts of the study, as it sets out the method for the detailed assessment. This EIA Scoping Report will be submitted to the Planning Inspectorate in order to inform its scoping opinion. The Planning Inspectorate may not adopt a Scoping Opinion in response to a request until it has consulted the person who made the request and the consultation bodies or notifies the person making the request that it requires additional information to adopt an opinion. The ES will be submitted as part of the application for a Development Consent Order (DCO). 1.1.3 The scope of the EIA may be amended following receipt of the scoping opinion or if understanding of environmental conditions change. The final version of this EIA Scoping Report will be issued as a technical appendix of the ES. This will provide a full audit trail for the EIA process that is undertaken. 1.2 Proposed Scheme Location 1.2.1 The A47 trunk road forms part of the strategic road network (SRN) and provides for a variety of local, medium and long-distance trips between the A1 and the eastern coastline. The corridor connects the cities of Norwich (population over 210,000) and Peterborough (population over 180,000) and the towns of Wisbech, Kings Lynn, Dereham, Great Yarmouth and Lowestoft. 1.2.2 The Proposed Scheme is located at Wansford and extends eastwards to Sutton and forms a section of single carriageway that is part of the main arterial highway route connecting Norwich and Great Yarmouth to the east (see Figure 1.1). EIA Scoping Report Page 7 of 177 A47 Wansford to Sutton Figure 1.1: Proposed Scheme Location Source: PRA document 1.3 Proposed Scheme Overview 1.3.1 The Proposed Scheme consists of a new 2.5km dual carriageway, which would be constructed partially off-line to the north and part off-line to the south of the existing A47. The new dual carriageway would tie in to the existing carriageway at the eastern roundabout at the A1 / A47 interchange and at the Nene Way Roundabout at the eastern end of the Proposed Scheme. At the western end, the Proposed Scheme would also include a free flow link between the A1 southbound carriageway and the new eastbound carriageway of the A47. The existing Wansford east roundabout, would be enlarged as part of the proposals to accommodate A47 westbound traffic.