Chapter 9: Road drainage and the water environment

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M1 JUNCTION 19 IMPROVEMENT ENVIRONMENTAL STATEMENT VOLUME 2 CHAPTER 9 – ROAD DRAINAGE AND THE WATER ENVIRONMENT Table 9.4 Overall Assessment Scoring (Based on DMRB, Volume 11, Section 3, Part 10, Table 5.6) Criteria Overall Score Predicted Outcome / Comment Very significant potential adverse impact on one or several water attributes. Very Large Degradation of water environment Adverse Effect At least one highly significant potential adverse impact, and/or Large Adverse Degradation of water environment significant potential adverse impacts on several water attributes Effect Moderate adverse impact on at least one water attribute Moderate Degradation of water environment Adverse Effect Slight adverse impact on one or more water attributes Slight Adverse Degradation of water environment Impact No appreciable effects on water attributes Neutral Generally impacts slight or moderate, possible but more difficult to balance more diverse adverse / beneficial impacts Proposal provides an opportunity to enhance the water environment or provide an improved level of protection for a water attribute Slight Beneficial Enhancement opportunity Proposal provides an opportunity to enhance the water environment, with a moderate improvement to a water attribute Effect Moderate Beneficial Effect Improvement opportunity (improvements should greatly outweigh negative impacts) At least one very significant /highly significant potential beneficial impact, and all potential adverse impacts insignificant Large Beneficial Effect Unlikely for major road scheme B0531000_ID_70-EIA Vol 2 Chap 9 Road Drainage and the Water Environment Final Rev 4.doc Page 8
M1 JUNCTION 19 IMPROVEMENT ENVIRONMENTAL STATEMENT VOLUME 2 CHAPTER 9 – ROAD DRAINAGE AND THE WATER ENVIRONMENT 9.3 LEGISLATION AND POLICY FRAMEWORK UK and EC Legislation 9.3.1 Relevant legislation comprises UK Acts and Regulations (many of the latter represent the incorporation of specific EC Directives into UK law), EC Directives and regulatory guidance. These are listed below in Table 9.5. The EA as statutory / regulatory authority applies these various forms of legislation to support the EA’s role to maintain and improve water quality within England and Wales. Table 9.5 Relevant UK and EC Legislation Title Water Feature Summary Water Resources Act 1991 4 All waters, but specifically main rivers and groundwater abstraction Consolidates previous water legislation in respect of both the quality and quantity of water resources. Sets statutory objectives, giving the Government and the EA a legal duty to ensure that they are achieved. Gives EA power to grant licences for groundwater abstraction. Covers works in, over or under main river, control of pollution of waters, including discharge consents UK Town and Country Planning Act 1990 5 Flood Protection Enables local authorities to enter into agreements with developers about how their land and flood defences should be managed. Land Drainage Act Ordinary (i.e. 1991 6 not main) Rivers Gives local authorities powers to undertake flood defence works on watercourses which have not been designated as "main" and which are not within internal drainage board areas. Covers works within the river channel including discharge consents Environment Act 1995 7 Main Rivers Establishment of the EA, and introduction of measures to enhance protection of the environment, including further powers for the prevention and remediation of water pollution. Control of Pollution Act 1974 8 Surface waters and groundwater The Water Integrated river Environment (Water basin Framework Directive) management of (England and Wales) all surface Regulations 2003 9 , waters, and EC Water transitional Framework Directive waters and 2000 (2000/60/EC) 10 coastal waters in England and Wales The Surface Water (River Ecosystem) Regulations 1994 11 Makes it an offence for anyone to cause or knowingly permit any poisonous, noxious or polluting matter to enter any stream or controlled waters or any specified underground waters. The directive sets out environmental objectives for water status based on parameters of monitoring and assessment strategies, and sets a Programme of Measures in order to meet the objectives. The Regulations transpose the directive and deal with the responsibility and timescales for setting up River Basin Districts, characterisation, economic analysis of water use, bodies of water used for abstraction for drinking water, register of protected areas etc. leading to the development of River Basin Management Plans Sets out River Ecosystem Classification system used as River Quality Objectives by the EA. B0531000_ID_70-EIA Vol 2 Chap 9 Road Drainage and the Water Environment Final Rev 4.doc Page 9
Page 1: M1 Junction 19 Improvement Environm
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M1 JUNCTION 19 IMPROVEMENT ENVIRONM
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Appendix A - Pollution and Spillage
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Method D - Assessment of Pollution
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Groundwater: Hydrocarbons Hydrogeol
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Non Technical Summary Skanska Const
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Contents 1 Introduction 1 1.1 Overv
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1 Introduction 1.1 Overview Jacobs
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2 Policy Review 2.1 Planning Contex
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When the both the ‘Flood Zone’
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3 Flood Risk to the Proposed Develo
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3.2 Fluvial Flooding - Ordinary Wat
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Major earthworks affecting surface
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3.7 Flooding from Infrastructure Fa
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3.9 Summary of Risks to Site Table
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4 Impacts of the Proposed Developme
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4.6 Summary of Flood Impacts from D
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5 Proposed Mitigation Measures 5.1
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The extents of this problem are cur
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5.7 Summary of Recommended Mitigati
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6 Residual Risks The level of flood
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7 PPS25 Sequential and Exception Te
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8 Conclusion The M1 Junction 19 Imp
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Appendix A Existing Layout, Environ
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Appendix B Contractor’s Proposals
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Appendix C Hydrogeological Assessme
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Memorandum Fairbairn House, Ashton
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Memorandum (Continued) Page 3 of 6
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Memorandum (Continued) Page 5 of 6
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Appendix D Volume Distribution for
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Floodplain compensation area - elev
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Depth Bands (m) TOTAL (m³) Area Re
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Chapter 9: Road drainage and the water environment

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