A27 East of Lewes Improvements PCF Stage 3 – Environmental Assessment Report
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¦ Tilton House Chilver Bridge Farm Keepers Sierra Vista "N Stonery Farm Cottages Tilton Wood Beacon View Shepherds Cottage New Barn Farm Alciston Old Leylands Barn Bopeep Farm Berwick Dawes House Bostal Hill Church Barn Bostal Bottom Berwick Court Farm © Crown copyright and database rights 2019 Ordnance Survey 100030649. Metres Comp Barn You are permitted to use this data solely to enable you to respond to, or interact with, 0 500 the organisation that provided you with the data. You are not permitted to copy, DO NOT SCALE Jerry's Bottom sub-licence, distribute or sell any of this data to third parties in any form. SAFETY, HEALTH AND ENVIRONMENTAL Drawing Status Suitability Project Title KEY: A27 INFORMATON FINAL S0 EAST OF LEWES DESIGN FIX 3 In addition to the hazards/risks normally associated with the types of work Drawing Title 1KM STUDY AREA detailed on this drawing, note the following significant residual risks WSP House (Reference shall also be made to the design hazard log). 70 Chancery Lane FIGURE 12.2: FLOOD MITIGATION AREAS Construction London PROW WC2A 1AF 1KM STUDY AREA TEMPORARY COMPOUNDS Tel: +44 (0)20 7314 5000 PAGE 3 OF 5 Maintenance / Cleaning www.wspgroup.co.uk PROW TYPE: www.pbworld.com Scale Drawn Checked Aproved Authorised Copyright © WSP Group (2019) CR CB GK MS 3 1:10,880 BRIDLEWAY Client Original Size Date Date Date Date BYWAY Use A3 14/03/19 14/03/19 14/03/19 14/03/19 Drawing Number Project Ref. No. FOOTPATH Contains OS data © Crown Project Originator Volume 70035418 Decomissioning / Demolition Revision RESTRICTED BYWAY Copyright and database right P01.1 --- First Issue --- --- --- HE552988 WSP P01 Rev. Date Description By Chk'd App'd 2018 Location Type Role Number Path: \\uk.wspgroup.com\central data\Projects\700354xx\70035418 - A27EastOfLewes\02 WIP\GIS\Mxd\People and Communities\70035418_201800524_Figure_12.2_PROW.mxd: Plotted by: UKCJR003 Date: Mar 14, 2019 - 11:44AM ¦ Beacon View "N Warren Farm Old Leylands Barn Sand Pit Farm Sanders Berwick Churchwood Farm Dawes House Wilmington Green Newbarn Farm Longman Nursery Wilmington Berwick Court Farm Keepers Cottage Mayflower House Milton Street Folkington © Crown copyright and database rights 2019 Ordnance Survey 100030649. Metres You are permitted to use this data solely to enable you to respond to, or interact with, Winton0 500 Milton Court Farm the organisation that provided you with the data. You are not permitted to copy, DO NOT SCALE sub-licence, distribute or sell any of this data to third parties in any form. SAFETY, HEALTH AND ENVIRONMENTAL Drawing Status Suitability Project Title KEY: A27 INFORMATON FINAL S0 EAST OF LEWES DESIGN FIX 3 In addition to the hazards/risks normally associated with the types of work Drawing Title 1KM STUDY AREA detailed on this drawing, note the following significant residual risks WSP House (Reference shall also be made to the design hazard log). 70 Chancery Lane FIGURE 12.2: FLOOD MITIGATION AREAS Construction London PROW WC2A 1AF 1KM STUDY AREA TEMPORARY COMPOUNDS Tel: +44 (0)20 7314 5000 PAGE 4 OF 5 Maintenance / Cleaning www.wspgroup.co.uk PROW TYPE: www.pbworld.com Scale Drawn Checked Aproved Authorised Copyright © WSP Group (2019) BRIDLEWAY 1:10,880 CR CB GK MS 4 Client Original Size Date Date Date Date BYWAY Use A3 14/03/19 14/03/19 14/03/19 14/03/19 Drawing Number Project Ref. No. FOOTPATH Contains OS data © Crown Project Originator Volume 70035418 Decomissioning / Demolition Revision RESTRICTED BYWAY Copyright and database right P01.1 --- First Issue --- --- --- HE552988 WSP P01 Rev. Date Description By Chk'd App'd 2018 Location Type Role Number Path: \\uk.wspgroup.com\central data\Projects\700354xx\70035418 - A27EastOfLewes\02 WIP\GIS\Mxd\People and Communities\70035418_201800524_Figure_12.2_PROW.mxd: Plotted by: UKCJR003 Date: Mar 14, 2019 - 11:44AM Nightingale Farm ¦ New House Farm Rosebank Farm Thornwell Lake Farm "N Little Friars Farm Cophall Farm Warren Farm Hide Cottage Bramley Farm Cop Hall Otham Court Wootton Manor Newbarn Farm POLEGATE The Flint House Keepers Cottage Wannock Mill Stream Old Rectory Cottage Mornings Mill Farm Folkington New Stream Ditch Middle Sewer © Crown copyright and database rights 2019 Ordnance Survey 100030649. Metres Wannock You are permitted to use this data solely to enable you to respond to, or interact with, 0 600 the organisation that provided you with the data. You are not permitted to copy, DO NOT SCALE Folkington Bottom sub-licence, distribute or sell any of this data to third parties in any form. SAFETY, HEALTH AND ENVIRONMENTAL Drawing Status Suitability Project Title KEY: A27 INFORMATON FINAL S0 EAST OF LEWES DESIGN FIX 3 In addition to the hazards/risks normally associated with the types of work Drawing Title 1KM STUDY AREA detailed on this drawing, note the following significant residual risks WSP House (Reference shall also be made to the design hazard log). 70 Chancery Lane FIGURE 12.2: FLOOD MITIGATION AREAS Construction London PROW WC2A 1AF 1KM STUDY AREA TEMPORARY COMPOUNDS Tel: +44 (0)20 7314 5000 PAGE 5 OF 5 Maintenance / Cleaning www.wspgroup.co.uk PROW TYPE: www.pbworld.com Scale Drawn Checked Aproved Authorised Copyright © WSP Group (2019) BRIDLEWAY 1:13,380 CR CB GK MS 5 Client Original Size Date Date Date Date BYWAY Use A3 14/03/19 14/03/19 14/03/19 14/03/19 Drawing Number Project Ref. No. FOOTPATH Contains OS data © Crown Project Originator Volume 70035418 Decomissioning / Demolition Revision RESTRICTED BYWAY Copyright and database right P01.1 --- First Issue --- --- --- HE552988 WSP P01 Rev. Date Description By Chk'd App'd 2018 Location Type Role Number Path: \\uk.wspgroup.com\central data\Projects\700354xx\70035418 - A27EastOfLewes\02 WIP\GIS\Mxd\People and Communities\70035418_201800524_Figure_12.2_PROW.mxd: Plotted by: UKCJR003 Date: Mar 14, 2019 - 11:44AM A27 East of Lewes Improvements PCF Stage 3 – Environmental Assessment Report 13 ROAD DRAINAGE AND THE WATER ENVIRONMENT 13.1 LEGISLATIVE AND POLICY FRAMEWORK 13.1.1 The various legislative, policy and guidance documents used to shape the assessment related to the Road Drainage and the Water Environment effects are outlined in Table 13.1. Table 13.1 - Legislation, Policy and Guidance GROUNDWATER DIRECTIVE (2006/118/EC)250 WATER FRAMEWORK DIRECTIVE (WFD) (2000/60/EC)251 LEGISLATION FLOOD AND WATER MANAGEMENT ACT 2010252 LAND DRAINAGE ACT (1991)253 THE NATIONAL PLANNING POLICY FRAMEWORK (NPPF, 2019)254 NATIONAL PLANNING PRACTICE GUIDANCE (NPPG,2014)255 POLICY ENVIRONMENTAL PERMITTING (ENGLAND AND WALES) REGULATIONS 2010256 NON-STATUTORY TECHNICAL STANDARDS FOR SUSTAINABLE DRAINAGE SYSTEMS 2015257 LEWES CORE STRATEGY (MAY 2016)258 LOCAL POLICY WEALDEN DISTRICT CORE STRATEGY (FEBRUARY 2013)259 DMRB VOLUME 11, SECTION 3, PART 10 (HD 45/09)260 GUIDANCE ENVIRONMENT AGENCY GROUNDWATER PROTECTION GUIDES261 CIRIA’S CONTROL OF WATER POLLUTION FROM CONSTRUCTION SITES 250 https://www.eea.europa.eu/policy-documents/groundwater-directive-gwd-2006-118-ec 251 http://ec.europa.eu/environment/water/water-framework/index_en.html 252 Her Majesty’s Stationary Office, 2010, Flood and Water Management Act 2010 253 Her Majesty’s Stationary Office, 1991, Land Drainage Act 1991 – Chapter 59 254https://www.gov.uk/government/publications/national-planning-policy-framework--2019 255 https://www.gov.uk/government/collections/planning-practice-guidance 256 http://www.legislation.gov.uk/uksi/2016/1154/contents/made 257https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/415773 /sustainable-drainage-technical-standards.pdf 258 https://www.lewes-eastbourne.gov.uk/planning-policy/lewes-core-strategy-local-plan-part-1/ 259http://www.wealden.gov.uk/Wealden/Residents/Planning_and_Building_Control/Planning_Policy/CoreStra tegy/Core_Strategy_Local_Plan.aspx 260 DfT, DMRB Volume 11 Environmental Assessment, Section 3, Part 10 HD 45/09 Road Drainage and the Water Environment, November 2009 261 https://www.gov.uk/government/collections/groundwater-protection 307 A27 East of Lewes Improvements PCF Stage 3 – Environmental Assessment Report (C532)262. CIRIA SUSTAINABLE DRAINAGE SYSTEMS (SUDS)263 13.1.1 Further detail on legislation and policy is provide in Appendix 1.1. 13.2 ASSESSMENT METHODOLOGY 13.2.1 This chapter provides a high-level qualitative assessment of the potential impacts of the scheme on the water environment. The assessment is based on the design information that is available at this stage (PCF Stage 3 – Preliminary Design). 13.2.2 The assessment methodology has been undertaken in accordance with the DMRB Volume 11, Section 3, Part 10 (HD 45/09). The DMRB promotes the following approach: Estimation of the importance of the attribute. Estimation of the magnitude of the impact (change). Assessment of the significance of the effect based on the importance of the attribute and the magnitude of the impact. 13.2.3 The assessment of effects on flood risk has been informed by high-level hydraulic analysis using a 1D – 2D linked Infoworks ICM hydraulic model for the River Cuckmere to assess any effect on the floodplain from the proposed new footbridge as part of the Shared Use Path. Further modelling has been undertaken to assess the existing 15 culverted ordinary watercourses under the A27 between Beddingham and Polegate, including a more detailed assessment of the Langley Sewer at Polegate. 13.2.1 This analysis is presented as a standalone flood risk assessment (FRA) in Appendix 13.1. A FRA is required for the scheme as it sits partially within Environment Agency (EA) Flood Zones 2 and 3 and also covers an area greater than 1 hectare (ha), as set out in NPPF. The findings of this analysis used to better understand likely effects associated the scheme and inform likely mitigation requirements. 13.2.2 The importance of the water environment receptors is considered in terms of indicators such as quality, scale, rarity and substitutability. Guidance for estimating these factors is provided in Table 13.2 and the magnitude of impact on the water environment is provided in table Table13.3.