M4 East EIS Volume 2E Appendix O Soils and Water

M4 East EIS Volume 2E Appendix O Soils and Water (pdf)

Contents Pages
Glossary of terms and abbreviations i
Executive summary ii
1 Introduction 1-1
1.1 Overview of the project 1-1
1.2 Project location 1-1
1.3 Secretary’s environmental assessment requirements 1-4
1.4 Purpose of this report 1-5
2 Proposed project 2-1
2.1 Project features 2-1
2.2 Construction activities 2-2
2.3 Surface water quality specific aspects 2-6
3 Assessment methodology 3-1
3.1 Key guidelines and policies 3-1
3.2 Water quality objectives 3-2
3.3 Methodology 3-4
4 Existing environment 4-1
4.1 Environmental setting 4-1
4.2 Waterways 4-1
4.3 Topography 4-4
4.4 Rainfall and climate 4-6
4.5 Soil landscapes and geology 4-6
4.6 Sensitivities of receiving environment 4-8
4.7 Overland flows 4-8
4.8 Existing water quality 4-8
4.9 Drainage network 4-11
4.10 Existing water quality treatment measures 4-11
5 Assessment of construction impacts 5-1
5.1 Potential construction impacts 5-1
5.2 Surface works 5-1
6 Assessment of operational impacts 6-1
6.1 Potential operational impacts 6-1
7 Management of impacts 7-1
7.1 Construction phase mitigation measures 7-1
7.2 Operational phase mitigation measures 7-7
8 Conclusion 8-9
9 References 9-1
10 Limitations 10-1
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