Newgale Weltag Stage 1 Assessment Report Pembrokeshire County Council
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Newgale WelTAG Stage 1 Assessment Report Pembrokeshire County Council January 2017 Newgale WelTAG Assessment Report Notice This document and its contents have been prepared and are intended solely for Pembrokeshire County Council’s information and use in relation to Newgale Beach Road. Atkins Highways and Transportation assumes no responsibility to any other party in respect of or arising out of or in connection with this document and/or its contents. This document has 178 pages including the cover. Document history Job number: 5147092 Document ref: WelTAG 270117 Revision Purpose description Originated Checked Reviewed Authorised Date Rev 1.0 Draft BN NC JS RM 27/01/17 Client signoff Client Pembrokeshire County Council Project Newgale Beach Road Document title WelTAG Stage 1 Assessment Report Job no. 5147092 Copy no. Document WelTAG 270117 reference Atkins Newgale | Consultation Draft | January 17 | 5147092 Newgale WelTAG Assessment Report Table of contents Chapter Pages 1. Introduction 10 1.1. Aim of Report 10 1.2. Previous Studies 11 2. Transport Planning Objectives 14 3. Existing Conditions 14 3.1. General 14 3.2. Population and Demographic Data 16 3.3. Topography 17 3.4. Land Use 17 3.4.1. Private Property 18 3.4.2. Land Used by the Community 20 3.4.3. Development Land 20 3.4.4. Agriculture 21 3.5. Existing Highway Network 22 3.5.1. A487 22 3.5.2. Welsh Road (C3082) 23 3.5.3. Minor Roads (C3062 / C3010) 23 3.6. Bus 25 3.7. Existing Traffic Conditions 25 3.7.1. Traffic Flows 25 3.7.2. Average Speeds 25 3.7.3. Road Accidents 26 3.8. Structures 28 3.9. Statutory Undertakers Apparatus 29 3.10. Geology 29 3.10.1. Superficial Geology 29 3.10.2. Bedrock Geology 29 3.10.3. Structural Geology 29 3.10.4. Mining 29 3.11. Traffic Noise and Vibration 29 3.12. Air Quality 30 3.13. Landscape and Townscape 30 3.13.1. Local Landscape Character 30 3.13.2. Broad Landscape Character 31 3.13.4. Landscape Designations 32 3.14. Biodiversity 34 3.14.1. Statutory Designated Sites 34 3.14.2. Non-statutory Designated Sites 35 3.14.3. Habitats 35 3.14.4. Species 36 3.15. Soils 37 3.15.1. Agricultural Land Classification 37 3.16. Contamination 38 3.17. Cultural Heritage 39 3.18. Water Quality 39 3.19. Flood risk 39 3.20. Pedestrians, Cyclists, Equestrians and Community Effects 40 4. Preliminary Engineering Design of Route Options 41 Atkins Newgale | Consultation Draft | January 17 | 5147092 Newgale WelTAG Assessment Report 4.1. Introduction 41 4.2. Engineering Standards 42 4.3. Highway Cross Section 42 4.4. Option 3b - Preliminary Engineering Design 43 4.8. Drainage 47 4.9. Road Lighting 48 4.10. Road Restraint System 48 4.11. Statutory Undertakers 48 4.12. Scheme Cost Estimates 48 5. Stage 1 WelTAG Appraisal 50 5.1. Scope 50 6. Economic Impacts 53 6.1. Transport Economic Efficiency (TEE) 53 6.1.1. Introduction 53 6.1.2. Methodology 53 6.1.3. Key Findings 53 6.1.4. Scheme Costs 56 6.1.5. Scheme Benefits 56 6.1.6. Scheme BCR Estimates 59 6.1.7. Transport Planning Objectives 59 7. Environment Impacts 61 7.1. Noise 61 7.1.1. Introduction 61 7.1.2. Method 61 7.1.3. Impact 62 7.1.4. Conclusions 66 7.2. Local Air Quality 66 7.2.1. Introduction 66 7.2.2. Method 66 7.2.3. Impact 67 7.3. Greenhouse Gas Emissions 68 7.3.1. Introduction 68 7.3.2. Method 68 7.3.3. Impact 69 7.4. Landscape and Townscape 70 7.4.1. Introduction 70 7.4.3. Methodology 71 7.4.4. Impacts 72 7.4.5. Landscape and Visual Impacts 74 7.4.6. Conclusion 85 7.5. Biodiversity 85 7.5.1. Introduction 85 7.5.2. Method 85 7.5.3. Impact 87 7.5.4. Conclusions 93 7.6. Heritage 94 7.6.1. Introduction 94 7.6.2. Method 95 7.6.3. Impact 97 7.6.4. Conclusions 101 7.6.5. References 102 Atkins Newgale | Consultation Draft | January 17 | 5147092 Newgale WelTAG Assessment Report 7.7. Water Environment 102 7.7.1. Introduction 102 7.7.2. Method 102 7.7.3. Impact 103 7.7.4. Limitations and Assumptions 107 7.9. Non Agricultural Land Use 108 7.9.1. Introduction 108 7.9.2. Method 108 7.9.3. Impact 108 7.9.4. Conclusion 112 7.10. Agricultural Land Use and Soils 113 7.10.1. Introduction 113 7.10.2. Method 113 7.10.3. Impacts 115 7.11. Land Contamination 117 7.11.1. Introduction 117 7.11.2. Method 117 7.11.3. Impact 117 7.11.4. Conclusion 118 8. Social Impacts 118 8.1. Permeability 118 8.1.1. Introduction 118 8.1.2. Methodology 118 8.1.3. Impacts 119 8.1.4. Conclusion 120 8.2. Physical Fitness 120 8.2.1. Introduction 120 8.2.2. Methodology 120 8.2.3. Impacts 121 8.2.4. Conclusion 121 8.3. Social Inclusion 121 8.3.1. Introduction 121 8.3.2. Methodology 122 8.3.3. Impact Assessment 122 8.3.4. Conclusion 124 8.4. Transport Safety 124 8.4.1. Methodology 124 8.4.2. Impacts 125 8.5. Equality, Diversity & Human Rights 127 9. Stage 1 Appraisal Summary Tables 128 9.1. Introduction 128 9.2. Option 3b 129 9.3. Option J 132 9.4. Option 7 136 9.5. Option 11 140 10. Wellbeing of Future Generations (Wales) Act 2015 144 10.1. Introduction 144 10.1.1. A prosperous Wales 144 10.1.2. A resilient Wales 144 10.1.3. A healthier Wales 145 10.1.4. A more equal Wales 145 Atkins Newgale | Consultation Draft | January 17 | 5147092 Newgale WelTAG Assessment Report 10.1.5. A Wales of cohesive communities 145 10.1.6. A Wales of vibrant culture and thriving Welsh Language 145 10.1.7. A globally responsible Wales 145 11. Conclusion and Recommendations 146 11.1. Conclusions 146 11.1.1. Transport Planning Objectives 146 11.1.2. Welsh Impact Areas 146 11.1.3. Cost of Options 146 11.1.4. Overall Conclusions and Recommendations 146 Tables Table 3-1: LANDMAP: Visual & Sensory Landscape Aspect Areas ............................................. 31 Table 3-2: Overview of biodiversity and earth heritage statutory designated sites within the Option study areas .................................................................................................................................... 34 Table 3-3: Habitat feature summary (all values are approximate) ................................................ 36 Table 3-4: Number of species records and protected species records within study area ............ 36 Table 3-5: Total Landtake and Loss of BMV Land ........................................................................ 38 Table 3-6: Water features adjacent to the scheme ....................................................................... 39 Table 4-1: Design Parameters ...................................................................................................... 42 Table 4-2: Recommended Opening Year Economic Flow Ranges .............................................. 42 Table 4-3: Scheme Cost Estimates............................................................................................... 49 Table 5-1: Scope of Works ............................................................................................................ 50 Table 6-1: 2022 AADT Opening Year Traffic Forecasts ............................................................... 54 Table 6-2: 2037 AADT Design Year Traffic Forecasts.................................................................. 55 Table 6-3: Opening Year Route Length Comparison.................................................................... 57 Table 6-4: Opening Year Journey Time Comparison ................................................................... 58 Table 6-5: Design Year Route Length Comparison ...................................................................... 58 Table 6-6: Design Year Journey Time Comparison ...................................................................... 59 Table 6-7: BCR Results ................................................................................................................ 59 Table 7-1: Classification of Magnitude of Noise Impacts .............................................................. 62 Table 7-2: Change in noise levels at noise sensitive receptors, Opening Year ........................... 64 Table 7-3: Change in noise levels at noise sensitive receptors, Design Year .............................. 65 Table 7-4: Number of perceptible and significant change in noise levels on opening .................. 65 Table 7-5: Number of perceptible and significant change in noise levels by the design year ...... 65 Table 7-6: Ranking ........................................................................................................................ 66 Table 7-7: Roads included in study area ...................................................................................... 67 Table 7-8: Total emissions of NOx and PM10 (kg/yr) 2022 .......................................................... 68 Table 7-9: Change in emissions of NOx and PM10 (kg/yr) in rank order ..................................... 68 Table 7-10: Emissions of CO2 (t/yr) .............................................................................................. 69 Table 7-11: Change in emissions of CO2 (t/yr) in rank order ....................................................... 69 Table 7-12: NPV and Change in carbon emissions and annual vehicle km ................................. 70 Table 7-13: Landscape Sensitivity ................................................................................................ 71 Table 7-14: Sensitivity of Visual Receptors .................................................................................. 72 Table 7-15: Environmental Value and Typical Descriptors ........................................................... 72 Table 7-16: Magnitude of Impact and Typical Descriptors ..........................................................