Newhaven Flood Alleviation Scheme Final Environmental Statement
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Newhaven Flood Alleviation Scheme Final Environmental Statement 6 November 2015 i We are the Environment Agency. We protect and improve the environment and make it a better place for people and wildlife. We operate at the place where environmental change has its greatest impact on people’s lives. We reduce the risks to people and properties from flooding; make sure there is enough water for people and wildlife; protect and improve air, land and water quality and apply the environmental standards within which industry can operate. Acting to reduce climate change and helping people and wildlife adapt to its consequences are at the heart of all that we do. We cannot do this alone. We work closely with a wide range of partners including government, business, local authorities, other agencies, civil society groups and the communities we serve. Published by: Environment Agency Horizon house, Deanery Road Bristol BS1 5AH Email: enquiries@environment- agency.gov.uk www.environment-agency.gov.uk © Environment Agency 2011 Further copies of this report are available from our publications catalogue: All rights reserved. This document may be http://publications.environment- reproduced with prior permission of agency.gov.uk or our National Customer the Environment Agency. Contact Centre: T: 03708 506506 Email: enquiries@environment- agency.gov.uk. ii EIA Quality Mark This Environmental Statement, and the Environmental Impact Assessment (EIA) carried out to identify the significant environmental effects of the proposed development, was undertaken in line with the EIA Quality Mark Commitments. The EIA Quality Mark is a voluntary scheme, operated by the Institute of Environmental Management and Assessment (IEMA), through which EIA activity is independently reviewed, on an annual basis, to ensure it delivers excellence in the following areas: EIA Management EIA Team Capabilities EIA Regulatory Compliance EIA Context & Influence EIA Content EIA Presentation Improving EIA practice To find out more about the EIA Quality Mark please visit: www.iema.net/qmark Newhaven FAS Final Environmental Statement, 6 November 2015 iii Contents 1 Background 1 2 Consenting regime of the Proposed Development 7 3 Scheme Development 9 3.1 Strategic context 9 3.2 Alterntave options considered 13 3.3 Consultation and engagement 22 3.4 Environmental topics scoped out of assessment 25 4 The Proposed Development 26 5 Impact assessment methodology 38 6 Key issues 46 6.1 Fauna and flora 46 6.2 Landscape and visual amenity 68 6.3 Archaeology and cultural heritage 90 6.4 Water environment 107 6.5 Ground conditions 126 6.6 Traffic and transport 145 7 Other issues 166 8 Effects interactions 168 9 Conclusion 173 10 Environmental Action Plan 176 References 178 Appendix A – Newhaven FAS design plans 190 Appendix B – Fauna and Flora 191 Appendix C – Landscape and visual amenity 196 Appendix D – Archaeology and cultural heritage 224 Appendix E – Ground conditions 227 Newhaven FAS Final Environmental Statement, 6 November 2015 iv Appendix F – Traffic and transport 229 Appendix G – Responses to Draft Environmental Statement 232 Newhaven FAS Final Environmental Statement, 6 November 2015 v Non-Technical Summary equipment. Newhaven’s swing bridge was also damaged, causing Introduction and Background temporary failure. The Environment Agency has been working closely with Lewes The objective of the Flood Alleviation Scheme for Newhaven is to District Council, South Downs National Park, East Sussex County provide a 1 in 200 year standard of protection to the year 2070. Council, Network Rail, Highways England, Natural England, Historic The Proposed Development forms part of the wider commitment to England, Newhaven Ports and Properties and various other the regeneration of Newhaven. It will deliver multiple benefits to the stakeholders to develop the Newhaven Flood Alleviation Scheme community by reducing flood risk and providing environmental (FAS). improvements. The town of Newhaven is located in East Sussex, between Brighton and Eastbourne (grid reference TQ449016). The Environmental Statement The main flood risk to Newhaven is due to tidal flooding of low lying land from the River Ouse, which passes through the town. There are As part of the planning application for the Newhaven FAS, an currently 431 residential properties at significant risk of flooding Environmental Statement has been prepared in accordance with the including important assets, such as, Seaford to Lewes railway line; Town and Country Planning (Environmental Impact Assessment) Newhaven Port; electricity substations; sewer line; waste water Regulations 2011, describing the likely significant environmental treatment works; the Energy Recovery Facility; power lines; and the effects associated with its construction and operation. A26 and A259 trunk roads. The information provided as part of the Environmental Statement will The existing standard of protection provided by the tidal defences be taken into account by the Planning Authority during determination through Newhaven varies, with the east bank estimated to have a 1 of the planning application. in 50 year chance of flooding, and the west bank having an estimated This Non-Technical Summary provides an overview of the findings of 1 in 100 year chance of flooding. environmental studies reported in the Environmental Statement as During December 2013, an extreme tidal surge event affected well as a summary of the measures proposed to avoid or reduce the Newhaven. This resulted in 60 residential and commercial properties likelihood of significant environmental effects. flooded on the east and west bank. Newhaven Town and Newhaven Harbour railway stations were affected with Newhaven Harbour railway station being closed for three days due to damaged signalling ii The Existing Environment • Newhaven Fort and Lunette Battery Scheduled Ancient Monument (located to the south of Newhaven); and Newhaven is a historic port town and has a current population of • Existing historic landfill sites (located north-west within approximately 12,250 people. The River Ouse passes through the Riverside Park). town and is flanked by a combination of revetted slopes, vertical quays and low flood walls. A majority of defences along the River Ouse through Newhaven are sheet piled walls. Residential buildings are mainly concentrated on the west bank, while the east bank is Consultation predominantly commercial and industrial buildings. Information has been exchanged and discussions held with a wide Key sensitive environments within or in close proximity to Newhaven range of consultees during the planning, design and assessment of FAS, as illustrated in Figure A, include: the Proposed Development, including statutory environmental groups, non-statutory environmental organisations, the Local • South Downs National Park (located to the north); Authority, businesses and landowners. This has resulted in changes to the design of the Newhaven FAS. • Sites of Nature Conservation Interest (SNCI) including Newhaven Refuse Tip SNCI and Newhaven Ponds SNCI A public exhibition was held in February 2015 which presented the (located north-west), Tide Mills SNCI (located south-east), latest information in relation to Newhaven FAS. A Preliminary and Newhaven Cliffs SNCI (located to the south); Environmental Information Report was circulated during March 2015, providing an opportunity for stakeholders to give comments, confirm • Brighton to Newhaven Cliffs Site of Special Scientific Interest environmental baseline conditions and surveys and agree the scope and Castle Hill Local Nature Reserve (located south of and methodology for the Environmental Statement. Newhaven); An Engagement Strategy has been produced for the Newhaven FAS • Marine Conservation Zone (located along the coast south of which will ensure that all interested parties are kept up-to-date as the Newhaven); Proposed Development progresses. The engagement strategy includes an action plan with key dates for each of the stakeholder • Protected and/or notable species including the great crested engagement activities. newt, reptiles, breeding and wintering birds and aquatic species and habitat which supports otters and water voles; Further information events will be undertaken later in 2015 with local landowners as well as interested and/or affected parties, with a ‘drop- • Grade II and Grade II* listed buildings within Newhaven town in’ approach where stakeholders will be invited to meet with the centre; Environment Agency and discuss the Proposed Development. iii Figure A: Newhaven FAS and environmental sensitivities Strategic context Newhaven is identified within the River Ouse to Seaford Head Coastal Defence Strategy. The Strategy area extends along the River Ouse, from the A27, south-east towards the town of Newhaven, then along the coastline of Seaford Head to Peacehaven Heights. The River Ouse to Seaford Head Coastal Defence Strategy was completed in 2012 and included recommendations for improvements to the standard of protection for the east and west banks of the River Ouse through the town of Newhaven. The agreed strategic objectives for Newhaven FAS include: • Implement flood risk reduction measures to achieve a 1 in 200 year Standard of Protection for Newhaven; • Reduce the impact of a large scale flood event at Newhaven and on the wider sub region; • Deliver cost effective solutions to a programme agreed with funding partners to enable confidence promoting regeneration in Newhaven; iv • Where possible, maximise environmental opportunities