Contents

                                                                                                                                                   

1                Introduction  1

1.1               General 1

1.2               Background Information & Previous Studies  1

1.3               Project Description  2

1.4               EIA Study Brief  3

1.5               Need of the Project 5

1.6               Implementation Programme  5

1.7               Concurrent Projects – Construction Phase  5

1.8               Concurrent Projects – Operational Phase  10

1.9               Summary  10

1.10            Structure of EIA Report 11

2                Scope of Environmental Impact Assessment Study  13

2.1               Cross Bay Link (CBL) 13

3                Alternative Options  15

3.1               General 15

3.2               Cross Bay Link Alignment Options Considered  16

3.3               Bridge Design Options  19

3.4               Consideration of Alternative Construction Methods and Sequences of Works  20

3.5               Preferred Construction Methods  22

4                Construction Descriptions  23

4.1               General 23

4.2               Construction Methodology for Cross Bay Link  23

4.3               Construction Methodology for Road D9  25

4.4               Tentative Programme  25

4.5               Plant Inventory  25

5                Air Quality Impact 26

5.1               Legislation and Standards  26

5.2               Description of Existing Environment 27

5.3               Air Sensitive Receivers & Pollution Sources  28

5.4               Potential Concurrent Projects  32/Sources

5.5               Construction Dust Assessment 34

5.6               Operational Air Quality Assessment 47

5.7               Residual Environmental Impacts  60

5.8               Conclusion  61

6                Noise Impact 62

6.1               Legislation and Standards  62

6.2               Description of Existing Environment 66

6.3               Noise Sensitive Receivers & Pollution Sources  66

6.4               Potential Concurrent Projects  69

6.5               Assessment Methodology  70

6.6               Construction Noise Assessment 71

6.7               Road Traffic Noise Assessment 87

6.8               Assessment of Side Effects and Constraints

6.9               Evaluation of Constraints on Planned Noise Sensitive Developments/Land Uses

6.10             Residual Environmental Impacts

6.11             Conclusion

7                Sediment Quality Impact 92

7.1               Legislation and Standards  92

7.2               Methodology for Sediment Quality Assessment 93

7.3               Review of Previous Sediment Quality Data  96

7.4               Sample Collection and Laboratory Analysis  98

7.5               Sediment Quality and Classification  104

7.6               Classification of Sediment 126

7.7               Conclusion  133

8                Water Quality  134

8.1               Legislation and Standards  134

8.2               Description of Existing Environment 138

8.3               Water Quality Sensitive Receivers & Pollution Sources  143

8.4               Potential Concurrent Projects  147

8.5               Assessment Methodology  148

8.6               Construction Phase Assessment 161

8.7               Operational Phase Assessment 178

8.8               Residual Impacts  180

8.9               Conclusion  180

9                Waste Management Implication  181

9.1               Legislation and Standards  181

9.2               Legislation and Standards  181

9.3               Assessment Methodology  185

9.4               Construction Phase – Evaluation of Waste Generation  185

9.5               Construction Phase – Recommended Mitigation Measures  192

9.6               Operational Phase  197

9.7               Residual Environmental Impacts  197

9.8               Conclusion  198

10              Marine Ecology Impact 199

10.1            Legislation and Standards  199

10.2            Methodology for Baseline Establishment 201

10.3            Ecological Baseline Conditions  208

10.4            Evaluation of Ecological Importance of Habitats and Species  213

10.5            Assessment Methodology  215

10.6            Impact Identification and Evaluation  218

10.7            Mitigations of Adverse Impacts  227

10.8            Residual Impacts  228

10.9            Monitoring and Audit 228

10.10         Conclusion  228

10.11         References  229

11              Fisheries Impact 231

11.1            Legislation and Standards  231

11.2            Methodology for Baseline Establishment 231

11.3            Fisheries Baseline Conditions  233

11.4            Assessment Methodology  238

11.5            Impact Identification and Evaluation  242

11.6            Mitigations of Adverse Impacts  247

11.7            Residual Impacts  247

11.8            Monitoring and Audit 248

11.9            Conclusion  248

11.10         References  248

12              Cultural Heritage Impact 250

12.1            Legislation and Standards  250

12.2            Legislation and Standards  250

12.3            Description of Existing Environment 253

12.4            Cultural Heritage Resources  253

12.5            Assessment Methodology  253

12.6            Construction Phase Assessment 256

12.7            Operational Phase Assessment 264

12.8            Residual Environmental Impacts  264

12.9            Conclusion  264

13              Landscape and Visual 265

13.2            Legislation, Standards and Guidelines  266

13.3            Assessment Methodology  267

13.4            Scope and Content of the Study  272

13.5            Baseline Study  278

13.6            Landscape Impact Assessment 289

13.7            Mitigation Measures

13.8            Visual Impact Assessment 295

13.9            Residual Impacts  304

13.10         Conclusion  310

14              Landfill Gas Hazard  312

14.1            Legislation and Standards  312

14.2            Scope of the Assessment 313

14.3            Description of Existing Environment 313

14.4            Potential Hazards and Properties of Landfill Gas  317

14.5            Assessment Methodology  318

14.6            Qualitative Risk Assessment 322

14.7            Precautionary and Protective Measures  331

14.8            Conclusion  338

15              Environmental Monitoring and Audit 339

15.1            Introduction  339

15.2            Project Organization  339

15.3            EM&A Manual & Implementation Schedule  340

15.4            EM&A Programme  341

15.5            Environmental Management Plan  341

15.6            Construction Method Statement 342

16              Summary of Environmental Outcomes

16.1            Population and Environmental Sensitive Areas Protected

16.2            Approaches Adopted to Avoid Environmental Impacts

16.3            Approaches Adopted to Minimize Environmental Impacts

16.4            Approaches Adopted to Mitigate Environmental Impacts

17              Conclusion  343

17.1            Alternative Options  343

17.2            Construction Descriptions  344

17.3            Air Quality Impact 344

17.4            Noise Impact 345

17.5            Sediment Quality  345

17.6            Waste Management 345

17.7            Water Quality Impact 346

17.8            Marine Ecological Impact 346

17.9            Fisheries Impact 347

17.10         Cultural Heritage Impact 347

17.11         Landfill Gas Hazard  348

17.12         Landscape and Visual Impact 348

17.13         Environmental Monitoring and Audit Requirement 349

 

 

 

References

 

 

Drawings (Volume 2)

Drawing No.                                                                Description

 

 

Chapter 1
209506/EIA/IN/001 General Layout Plan
Chapter 3
209506/EIA/AO/001 Cross Bay Link Alignment Options
209506/EIA/AO/002 Preferred Alignment Option
Chapter 5
209506/EIA/AIR/001 Locations of Air Sensitive Receivers
209506/EIA/AIR/002 Contours of Unmitigated 1-hour TSP Concentrations at 1.5m above Ground (Tier 1)
209506/EIA/AIR/003 Contours of Unmitigated 24-hour TSP Concentrations at 1.5m above Ground (Tier 1)
209506/EIA/AIR/004 Contours of Unmitigated Annual TSP Concentrations at 1.5m above Ground
209506/EIA/AIR/005 Contours of Mitigated 1-hour TSP Concentrations at 1.5m above Ground (Tier 1)
209506/EIA/AIR/006 Contours of Mitigated 24-hour TSP Concentrations at 1.5m above Ground (Tier 1)
209506/EIA/AIR/007 Contours of Mitigated Annual TSP Concentrations at 1.5m above Ground
209506/EIA/AIR/008 Not used
209506/EIA/AIR/009 Not used
209506/EIA/AIR/010 Locations of Open Roads and Chimneys
209506/EIA/AIR/011 Contours of 1-hour NO2 Concentrations at 1.5m above Ground
209506/EIA/AIR/012 Contours of 24-hour NO2 Concentrations at 1.5m above Ground
209506/EIA/AIR/013 Contours of Annual NO2 Concentrations at 1.5m above Ground
209506/EIA/AIR/014 Contours of 24-hour RSP Concentrations at 1.5m above Ground
209506/EIA/AIR/015 Contours of Annual RSP Concentrations at 1.5m above Ground
Chapter 6
209506/EIA/IN/001 General Layout Plan and Noise Study Boundary
209506/EIA/NS/001 Locations of NSRs for Noise Assessment
209506/EIA/NS/002 Locations and Extent of Mitigation Measures
Chapter 7
209506/EIA/SQ/001 Previous Sediment Sampling Locations
209506/EIA/SQ/002 Marine Sediment Sampling Locations
209506/EIA/SQ/003 Marine Sediment Sampling Locations along the Proposed Alignment
Chapter 8
209506/EIA/WQ/001 Locations of Water Quality Sensitive Receivers
209506/EIA/WQ/002 Grid Layout for Junk Bay Model
209506/EIA/WQ/003 Bathymetry Schematisation for Junk Bay Model
209506/EIA/WQ/004 Cross-sections for Model Outputs
209506/EIA/WQ/005 Sediment Loss Locations
209506/EIA/WQ/006 Image of Cage-type Silt Curtain
Chapter 10
209506/EIA/MEC/001 Marine Ecological Assessment Area and Project Location
209506/EIA/MEC/002a Sampling Points for Marine Ecological Survey (a)
209506/EIA/MEC/002b Sampling Points for Marine Ecological Survey (b)
209506/EIA/MEC/003 Habitat Types in the Vicinity of the CBL alignment
Chapter 11
209506/EIA/FSH/001 Fisheries Assessment Area
209506/EIA/FSH/002 Distribution of Overall Fisheries Production (adult fish) in Hong Kong and the Project Site
209506/EIA/FSH/003 Distribution of Fish Fry Production in Hong Kong and the Project Site
209506/EIA/FSH/004 Distribution of Operation of Fishing Vessels (over 15m in length)  in Hong Kong and the Project Site
209506/EIA/FSH/005 Distribution of Operation of Fishing Fessels (less than 15m in length)  in Hong Kong and the Project Site
209506/EIA/FSH/006 Fisheries Production from Fishing Vessels (over 15m in length) in Hong Kong and the Project Site
209506/EIA/FSH/007 Fisheries Production from Fishing Vessels (less than 15m in length) in Hong Kong and the Project Site
209506/EIA/FSH/008 Distribution of Overall Fisheries Value (adult fish and fish fry) in Hong Kong and the Project Site
Chapter 13
209506/EIA/LV/1101 Landscape and Visual Impact Study Area
209506/EIA/LV/1102 Review of Planning Framework Plan
209506/EIA/LV/1201 Baseline Landscape Resources with Development Proposal Overlaid 
209506/EIA/LV/1211 Baseline Landscape Resources Photos (Sheet 1 of 3)
209506/EIA/LV/1212 Baseline Landscape Resources Photos (Sheet 2 of 3)
209506/EIA/LV/1213 Baseline Landscape Resources Photos (Sheet 3 of 3)
209506/EIA/LV/1301 Baseline Landscape Character Areas with Development Proposal Overlaid 
209506/EIA/LV/1311 Baseline Landscape Character Areas Photos (Sheet 1 of 2)
209506/EIA/LV/1312 Baseline Landscape Character Areas Photos (Sheet 2 of 2)
209506/EIA/LV/1401 Baseline Key VSRs and Viewpoints at Strategic and District Level with Development Proposal Overlaid
209506/EIA/LV/1402 Baseline Key VSRs and Viewpoints at Local Level with Development Proposal Overlaid During Construction (Sheet 1 of 2)
209506/EIA/LV/1403 Baseline Key VSRs and Viewpoints at Local Level with Development Proposal Overlaid During Construction (Sheet 2 of 2)
209506/EIA/LV/1404 Baseline Key VSRs and Viewpoints at Local Level with Development Proposal Overlaid During Operation (Sheet 1 of 2)
209506/EIA/LV/1405 Baseline Key VSRs and Viewpoints at Local Level with Development Proposal Overlaid During Operation (Sheet 2 of 2)
209506/EIA/LV/1411 Baseline Key VSRs Photo (Sheet 1 of 15)
209506/EIA/LV/1412 Baseline Key VSRs Photo (Sheet 2 of 15)
209506/EIA/LV/1413 Baseline Key VSRs Photo (Sheet 3 of 15)
209506/EIA/LV/1414 Baseline Key VSRs Photo Sheet 4 of 15)
209506/EIA/LV/1415 Baseline Key VSRs Photo (Sheet 5 of 15)
209506/EIA/LV/1416 Baseline Key VSRs Photo (Sheet 6 of 15)
209506/EIA/LV/1417 Baseline Key VSRs Photo (Sheet 7 of 15)
209506/EIA/LV/1418 Baseline Key VSRs Photo (Sheet 8 of 15)
209506/EIA/LV/1419 Baseline Key VSRs Photo (Sheet 9 of 15)
209506/EIA/LV/1420 Baseline Key VSRs Photo (Sheet 10 of 15)
209506/EIA/LV/1421 Baseline Key VSRs Photo (Sheet 11 of 15)
209506/EIA/LV/1422 Baseline Key VSRs Photo (Sheet 12 of 15)
209506/EIA/LV/1423 Baseline Key VSRs Photo (Sheet 13 of 15)
209506/EIA/LV/1424 Baseline Key VSRs Photo (Sheet 14 of 15)
209506/EIA/LV/1425 Baseline Key VSRs Photo (Sheet 15 of 15)
209506/EIA/LV/1611 Residual Impacts on Landscape Resources with Mitigation Measures in Year 10 
209506/EIA/LV/1621 Residual Impacts on Landscape Character Areas with Mitigation Measures in Year 10 
209506/EIA/LV/1631 Residual Impacts on VSRs at Strategic and District Level with Mitigation Measures in Year 10
209506/EIA/LV/1632 Residual Impacts on VSRs at Local Level with Mitigation Measures in Year 10 (Sheet 1 of 2)
209506/EIA/LV/1633 Residual Impacts on VSRs at Local Level with Mitigation Measures in Year 10 (Sheet 2 of 2)
209506/EIA/LV/1700 Key Plan of Photomontage and Viewpoints
209506/EIA/LV/1701A Photomontage From VSR R4  (sheet 1 of 2)
209506/EIA/LV/1701B Photomontage From VSR R4 (sheet 2 of 2)
209506/EIA/LV/1702 Photomontage From VSR S4
209506/EIA/LV/1703 Model View From VSR T3 
209506/EIA/LV/1704 Photomontage From VSR CDA1 
209506/EIA/LV/1705A Photomontage From VSR S2 (Sheet 1 of 2)
209506/EIA/LV/1705B Photomontage From VSR S2 (Sheet 2 of 2)
209506/EIA/LV/1706A Photomontage From VSR D1 (Sheet 1 of 2)
209506/EIA/LV/1706B Photomontage From VSR D1 (Sheet 2 of 2)
209506/EIA/LV/1707A Photomontage From VSR D2 (Sheet 1 of 2)
209506/EIA/LV/1707B Photomontage From VSR D2 (Sheet 2 of 2)
209506/EIA/LV/1708A Photomontage From VSR REC1 (Sheet 1 of 2)
209506/EIA/LV/1708B Photomontage From VSR REC1 (Sheet 2 of 2)
209506/EIA/LV/1709A Photomontage From VSR R2 (Sheet 1 of 2)
209506/EIA/LV/1709B Photomontage From VSR R2 (Sheet 2 of 2)
209506/EIA/LV/1801 Landscape Plan (Sheet 1 of  3)
209506/EIA/LV/1802 Landscape Plan (Sheet 2 of  3)
209506/EIA/LV/1803 Landscape Plan (Sheet 3 of  3)
Chapter 14
209506/EIA/LFG/001 250m Consultation Zones of Tseung Kwan O Stage I & II/III Landfills
209506/EIA/LFG/002 Locations of Gas Monitoring Wells at Tseung Kwan O Stage II/III Landfill

 

 

Appendices (Volume 3)

Chapter 4
Appendix 4.1 Construction Programme
Chapter 5
Appendix 5.1 Details of Dust Emission Sources and Calculations
Appendix 5.2 Justifications for the Percentage of Active Works Areas and Dust Suppression Efficiency
Appendix 5.3 Details of Industrial Emission Sources
Appendix 5.4 Methodology and Calcultions of Vehicular Emission (EmFAC-HK)
Appendix 5.5 PATH Concentrations for Year 2020
Appendix 5.6 Summary of Composite Vehicular Emission Factor
Appendix 5.7 Calculation of Portal Emission
Appendix 5.8 Detailed Results of the Operational Air Quality Assessment
   
Chapter 6  
Appendix 6.1 Construction Noise Programme refers to Appendix 4.1
Appendix 6.2
Appendix 6.3
Appendix 6.4
Appendix 6.5
Appendix 6.6
Appendix 6.7
Appendix 6.8
Appendix 6.9
Appendix 6.10
Appendix 6.11
Appendix 6.12
Appendix 6.13a
Appendix 6.13b
Appendix 6.14
Appendix 6.15a
Appendix 6.15b
Appendix 6.16
Appendix 6.16a
Appendix 6.17
SWLs for PME
Plant Inventory Adopted near CBL
Distance between Notional Source and NSRs near CBL
Monthly Unmitigated Noise Contribution near CBL
Unmitigated Construction Noise Impacts near CBL
Sketch of Typical Temporary Noise Barrier/ Enclosure
Monthly Mitigated Noise Contribution near CBL
Mitigated Construction Noise Impacts near CBL
Monthly Mitigated Noise Contribution near CBL with Cumulative Impacts
Mitigated Construction Noise Impacts near CBL with Cumulative Impacts
Sample Calculation of Sound Pressure Level at NSRs on a Monthly Basis
Approval from TD on Traffic Data
Road Scheme and Traffic Flow ID
Noise Impacts on the NSRs (Unmitigated Scenario)
Noise Impacts on the NSRs (Without Project Scenario at Year 2036)
Noise Impacts on the NSRs (Without Project Scenario at Year 2015)
Section Drawing
Sample Calculation
Noise Impacts on the NSRs (Mitigated Scenario)
Appendices (Volume 4)  
   
Chapter 7
Appendix 7.1 Management Framework for Dredged/Excavated Sediment in Hong Kong
Appendix 7.2 Summary of Sediment Chemical Quality Results (extracted from Further Development of TKO – EIA Study)
Appendix 7.3 Estimated Volume of Marine Sediment to be Dredged at Cross Bay Link
Chapter 8
Appendix 8.1 Calculations of Sediment Release Rates
Appendix 8.2 Modelling Results - Suspended Solids
Appendix 8.3 Elutriate Test Results
Appendix 8.4 Modelling Results - Contaminants
Appendix 8.5 Modelling Results - Operational Phase
Appendix 8.6 Dissolved Oxygen Calculations
Chapter 10
Appendix 10.1 Dive Survey
Appendix 10.2 Intertidal Survey
Appendix 10.3 Benthic Survey
Appendix 10.4 Fish Survey
Appendix 10.5 Verification Survey
Chapter 12
Appendix 12.1 Figures for Cultural Heritage Impact Assessment
Chapter 13  
Appendix 13.1 Final Tree Survey Report and Tree Removal Application (file: (file:  068-02 Final Tree Survey Report & Tree Removal Application (Ref 239))
Appendix 13.2 ACABAS
Chapter 14
Appendix 14.1 Tseung Kwan O Landfills Restoration – Stage II/III Final Cap Site Plan and Cross Sections
Appendix 14.2 Geological Map for Tseung Kwan O Stage II/III Landfill
Appendix 14.3 Landfill Gas Monitoring Results of Tseung Kwan O Stage II/III Landfill
Appendix 14.4 Cross Section between CBL and Tseung Kwan O Stage II/III Landfill
Appendix 14.5 Existing Utility Plans