London- West Midlands ENVIRONMENTAL STATEMENT Volume 2 | Community Forum Area Report CFA9 | Central Chilterns
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LONDON-WEST MIDLANDS ENVIRONMENTAL STATEMENT ENVIRONMENTAL MIDLANDS LONDON-WEST | Vol 2 Vol LONDON- | Community Forum Area report Area Forum Community WEST MIDLANDS ENVIRONMENTAL STATEMENT Volume 2 | Community Forum Area report CFA9 | Central Chilterns | CFA9 | Central Chilterns November 2013 VOL VOL VOL ES 3.2.1.9 2 2 2 London- WEST MIDLANDS ENVIRONMENTAL STATEMENT Volume 2 | Community Forum Area report CFA9 | Central Chilterns November 2013 ES 3.2.1.9 High Speed Two (HS2) Limited has been tasked by the Department for Transport (DfT) with managing the delivery of a new national high speed rail network. It is a non-departmental public body wholly owned by the DfT. A report prepared for High Speed Two (HS2) Limited: High Speed Two (HS2) Limited, Eland House, Bressenden Place, London SW1E 5DU Details of how to obtain further copies are available from HS2 Ltd. Telephone: 020 7944 4908 General email enquiries: [email protected] Website: www.hs2.org.uk High Speed Two (HS2) Limited has actively considered the needs of blind and partially sighted people in accessing this document. The text will be made available in full on the HS2 website. The text may be freely downloaded and translated by individuals or organisations for conversion into other accessible formats. If you have other needs in this regard please contact High Speed Two (HS2) Limited. Printed in Great Britain on paper containing at least 75% recycled fibre. CFA Report – Central Chilterns/No 9 | Contents Contents Contents i 1 Introduction 1 1.1 Introduction to HS2 1 1.2 Purpose of this report 1 1.3 Structure of this report 3 2 Overview of the area and description of the Proposed Scheme 5 2.1 Overview of the area 5 2.2 Description of the Proposed Scheme 8 2.3 Construction of the Proposed Scheme 15 2.4 Operation of the Proposed Scheme 36 2.5 Community forum engagement 37 2.6 Route section main alternatives 39 3 Agriculture, forestry and soils 51 3.1 Introduction 51 3.2 Scope, assumptions and limitations 51 3.3 Environmental baseline 52 3.4 Effects arising during construction 57 3.5 Effects arising from operation 67 4 Air quality 69 4.1 Introduction 69 4.2 Scope, assumptions and limitations 69 4.3 Environmental baseline 70 4.4 Effects arising during construction 71 4.5 Effects arising from operation 73 5 Community 75 5.1 Introduction 75 5.2 Scope, assumptions and limitations 75 5.3 Environmental baseline 76 5.4 Effects arising during construction 77 i CFA Report – Central Chilterns/No 9 | Contents 5.5 Effects arising from operation 83 6 Cultural heritage 85 6.1 Introduction 85 6.2 Scope, assumptions and limitations 85 6.3 Environmental baseline 86 6.4 Effects arising during construction 95 6.5 Effects arising from operation 103 7 Ecology 105 7.1 Introduction 105 7.2 Scope, assumptions and limitations 105 7.3 Environmental baseline 106 7.4 Effects arising during construction 115 7.5 Effects arising from operation 123 8 Land quality 127 8.1 Introduction 127 8.2 Scope, assumptions and limitations 128 8.3 Environmental baseline 128 8.4 Effects arising during construction 131 8.5 Effects arising from operation 138 9 Landscape and visual assessment 139 9.1 Introduction 139 9.2 Scope, assumptions and limitations 140 9.3 Environmental baseline 140 9.4 Temporary effects arising during construction 142 9.5 Permanent effects arising during operation 153 10 Socio-economics 167 10.1 Introduction 167 10.2 Scope, assumptions and limitations 167 10.3 Environmental baseline 168 10.4 Effects arising during construction 171 10.5 Effects arising during operation 174 11 Sound, noise and vibration 175 11.1 Introduction 175 11.2 Environmental baseline 176 11.3 Effects arising during construction 178 11.4 Effects arising during operation 182 12 Traffic and transport 187 12.1 Introduction 187 12.2 Scope, assumptions and limitations 187 12.3 Environmental baseline 187 ii CFA Report – Central Chilterns/No 9 | Contents 12.4 Effects arising during construction 189 12.5 Effects arising from operation 195 13 Water resources and flood risk assessment 197 13.1 Introduction 197 13.2 Scope, assumptions and limitations 198 13.3 Environmental baseline 199 13.4 Effects arising during construction 207 13.5 Effects arising from operation 213 14 References 215 List of figures Figure 1: HS2 Phase One route and community forum areas 2 Figure 2: Area context map 6 Figure 3: Schematic of construction compounds for civil engineering works 19 Figure 4: Schematic of construction compounds for railway installation works 20 Figure 5: Indicative construction programme 34 Figure 6: Business sector composition in Chiltern District and the South East 169 Figure 7: Proportion of employment by industrial sector in Chiltern District and the South East 170 List of tables Table 1: Demolition works at Chiltern tunnel north portal satellite compound 24 Table 2: Demolition works at South Heath green tunnel satellite compound and Chilterns main compound 26 Table 3: Estimated construction, demolition and excavation waste 32 Table 4: Operational waste forecast for the Proposed Scheme 37 Table 5: Summary characteristics of holdings 56 Table 6: Agricultural land quality 59 Table 7: Summary of temporary construction effects on holdings 61 Table 8: Agriculture and forestry land required permanently 63 Table 9: Summary of permanent effects on holdings from construction 64 Table 10: Protected and/or notable species 111 Table 11: Summary of sensitive receptors 130 Table 12: Summary of baseline CSM for sites which may pose a contaminative risk for the Proposed Scheme 133 Table 13: Summary of temporary (construction) effects 135 Table 14: Summary of permanent (post-construction) effects 136 Table 15: Direct adverse effects on residential communities and shared open areas that are considered to be significant on a community basis 180 Table 16: Train flows and speeds 182 iii CFA Report – Central Chilterns/No 9 | Contents Table 17: Direct adverse effects on residential communities and shared open areas that are considered significant on a community basis 185 Table 18: Typical vehicle trip generation for construction compounds in this area 191 Table 19: Surface water features potentially affected by the Proposed Scheme 200 Table 20: Summary of geology and hydrogeology in CFA9 201 iv CFA Report – Central Chilterns/No 9 | Structure of the HS2 Phase One Environmental Statement Structure of the HS2 Phase One Environmental Statement The Environmental Statement (ES) documentation comprises: Non-technical summary (NTS) – which provides a summary in non-technical language of the Proposed Scheme, the likely significant environmental effects of the Proposed Scheme, both beneficial and adverse, and the means to avoid or reduce the adverse effects; Volume 1: Introduction to the ES and the Proposed Scheme – this describes High Speed Two (HS2), and the environmental impact assessment process, the approach to consultation and engagement, details of the permanent features and generic construction techniques as well as a summary of main strategic and route-wide alternatives and local alternatives (prior to 2012) considered; Volume 2: Community forum area reports and map books – 26 reports and associated map books providing a description of the scheme and of environmental effects in each area; Volume 3: Route-wide effects – provides an assessment of the effects of the Proposed Scheme where it is not practicable to describe them within the CFA descriptions in Volume 2; Volume 4: Off-route effects – provides an assessment of the off-route effects of the Proposed Scheme; Volume 5: Appendices and map books – contains supporting environmental information and associated map books; and Glossary of terms and list of abbreviations – contains terms and abbreviations, including units of measurement, used throughout the ES documentation. v CFA Report - Central Chilterns/No 9 | Structure of the HS2 Phase One Environmental Statement vi CFA Report – Central Chilterns/No 9 | Introduction 1 Introduction 1.1 Introduction to HS2 1.1.1 High Speed Two (HS2) is a new high-speed railway proposed by the Government to connect major cities in Britain. Stations in London, Birmingham, Leeds, Manchester, South Yorkshire and the East Midlands will be served by high-speed trains running at speeds of up to 360kph (225mph). 1.1.2 HS2 is proposed to be built in two phases. Phase One, the subject of this ES, will involve the construction of a new railway line of approximately 230km (143 miles) between London and Birmingham. Construction will begin in 2017 and the line will become operational by 2026; with a connection to the West Coast Main Line (WCML) near Lichfield and to the existing HS1 railway line in London. 1.1.3 During Phase One beyond the dedicated high-speed track, these high-speed trains will connect with and run on the existing WCML to serve passengers beyond the HS2 network to destinations in the north. A connection to HS1 will also allow some services to access that high-speed line through east London and Kent and connect with mainland Europe via the Channel Tunnel. 1.1.4 Phase Two will involve the construction of lines from Birmingham to Leeds and Manchester; with construction commencing around 2023, and planned to be operational by 2033. 1.1.5 Section 4 of Volume 1 describes the anticipated operational characteristics of HS2, including the anticipated frequency of trains. As Volume 1 shows, the frequency of trains is expected to increase over time and to increase further upon opening of Phase Two. In assessing the environmental effects of the Proposed Scheme the anticipated Phase 2 operational frequency has been used. For further detail about operation of the scheme in the Central Chilterns (CFA9) area, see Section 2.4. 1.1.6 The Government believes that the HS2 network should link to Heathrow and its preferred option is for this to be built as part of Phase Two.