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 |
