A4226 FIVE MILE LANE PROPOSED ROAD SAFETY IMPROVEMENT SCHEME INTERIM SCHEME ASSESSMENT REPORT January 2011 4 Stangate House, Stanwell Road, Penarth, Vale of Glamorgan CF64 2AA Telephone:- 029 2040 8476 Facsimile:- 029 2040 8482 e-mail:- [email protected] Web Site:- www.soltysbrewster.co.uk Vale of Glamorgan Council January 2011 Five Mile Lane Improvements 0937801 R01 Interim Scheme Assessment Report PROPOSED ROAD SAFETY IMPROVEMENT SCHEME A4226 FIVE MILE LANE VALE OF GLAMORGAN INTERIM SCHEME ASSESSMENT REPORT January 2011 Document Ref: 0937801 R01 Final Report Approved by: Gary Soltys Position: Director Date: January 2011 Vale of Glamorgan Council January 2011 Five Mile Lane Improvements 0937801 R01 Interim Scheme Assessment Report Contents Volume 1 – Interim Scheme Assessment Report 1 Introduction ............................................................................................................... 1 1.2 Studies Completed to Date .......................................................................................................... 1 1.3 Purpose of the Interim Scheme Assessment Report ................................................................... 4 1.4 Approach and Methodology ........................................................................................................ 5 1.5 Assessment Structure .................................................................................................................. 8 2 Baseline ................................................................................................................... 11 2.1 Geographical Context ................................................................................................................ 11 2.2 Historical Context ...................................................................................................................... 11 2.3 Planning Context ....................................................................................................................... 11 2.4 Baseline Traffic Forecast ............................................................................................................ 12 2.5 Do Minimum Scenario ............................................................................................................... 13 2.6 Scheme Options Descriptions .................................................................................................... 13 Assessment of Effects ...................................................................................................... 24 3 Traffic Noise and Vibration ...................................................................................... 25 3.1 Introduction / Impact Description ............................................................................................. 25 3.2 Appraisal Methodology .............................................................................................................. 25 3.3 Study Area / Sensitivity of Receptors ........................................................................................ 26 3.4 Baseline Conditions .................................................................................................................... 28 3.5 Potential mitigation principles .................................................................................................... 31 3.6 Construction Impacts ................................................................................................................. 32 3.7 Significance ................................................................................................................................. 33 3.8 Overall Significance .................................................................................................................... 36 3.9 Limitations, Assumptions and Further Work ............................................................................ 36 4 Local Air Quality ...................................................................................................... 37 4.1 Introduction / Impact Description ............................................................................................. 37 4.2 Appraisal Methodology .............................................................................................................. 37 4.3 Study Area / Sensitivity of Receptors ........................................................................................ 38 4.4 Baseline Conditions .................................................................................................................... 40 4.5 Construction Impacts ................................................................................................................. 43 Vale of Glamorgan Council January 2011 Five Mile Lane Improvements 0937801 R01 Interim Scheme Assessment Report 4.6 Potential mitigation principles .................................................................................................... 43 4.7 Overall Significance .................................................................................................................... 43 4.8 Overall Result ............................................................................................................................ 47 4.9 Limitations, Assumptions and Further Work ............................................................................ 47 5 Landscape and Vehicle Travellers Effects .................................................................. 48 5.1 Introduction ............................................................................................................................... 48 5.2 Landscape Effects Appraisal Methodology ................................................................................. 48 5.3 Baseline Conditions .................................................................................................................... 58 5.4 Impact Distribution .................................................................................................................... 64 5.5 Potential mitigation principles .................................................................................................... 64 5.6 Landscape Effects Assessment ................................................................................................... 66 5.7 Vehicle Travellers Assessment .................................................................................................. 66 5.8 Overall Significance .................................................................................................................... 73 6 Biodiversity .............................................................................................................. 79 6.1 Introduction ............................................................................................................................... 79 6.2 Appraisal Methodology .............................................................................................................. 80 6.3 Baseline Conditions .................................................................................................................... 82 6.4 Potential Receptors .................................................................................................................... 92 6.5 Mitigation ................................................................................................................................. 100 6.6 Residual Impact ........................................................................................................................ 105 6.7 Conclusions .............................................................................................................................. 105 7 Land Use ................................................................................................................ 107 7.1 Introduction ............................................................................................................................. 107 7.2 Appraisal Methodology ............................................................................................................ 107 7.3 Baseline Conditions .................................................................................................................. 108 7.4 Potential Receptors and Impacts.............................................................................................. 110 7.5 Potential Mitigation Principles .................................................................................................. 119 7.6 Limitations, Assumptions and Further Work .......................................................................... 121 7.7 Overall Assessment of Significance .......................................................................................... 122 8 Heritage ................................................................................................................. 123 8.1 Introduction ............................................................................................................................. 123 8.2 Baseline Conditions .................................................................................................................. 124 Vale of Glamorgan Council January 2011 Five Mile Lane Improvements 0937801 R01 Interim Scheme Assessment Report 8.3 Option Assessment Tables ....................................................................................................... 131 8.4 Potential mitigation