CONTENTS

Page No.

1. INTRODUCTION 1 - 1

1.1 Background Information 1 - 1

1.2 Objectives of the EIA Study 1 - 1

1.3 Description of the Assignment 1 - 2

1.4 Structure of the Report 1 - 2

2. PROJECT DESCRIPTION 2 - 1

2.1 Site Location and Route Selection 2 - 1

2.2 Project Description 2 - 2

2.3 Transmission Methods for the Proposed Route 2 - 2

2.4 Construction Method 2 - 5

2.5 Schedule Programme 2 - 5

2.6 Cumulative Impacts 2 - 6

3. CONSTRUCTION IMPACTS 3 - 1

3.1 Introduction 3 - 1

3.2 Sensitive Receivers 3 - 1

3.3 Air Quality 3 - 1

3.4 Noise 3 - 7

3.5 Impact on Loss of Groundwater 3 - 16

4. WATER QUALITY ASSESSMENT 4 - 1

4.1 Introduction 4 - 1

4.2 Relevant Legislation, Regulations and Guidelines and Evaluation Criteria 4 - 1

4.3 Potential Sources of Impact 4 - 4

4.4 Sensitive Receivers 4 - 9

4.5 Construction Phase Impacts 4 - 10

4.6 Mitigation Measures 4 - 16

4.7 Residual Impacts 4 - 19

4.8 Cumulative Impact 4 - 19

4.9 Operational Phase 4 - 19

4.10 Environmental Monitoring & Audit 4 - 19

4.11 Conclusions 4 - 19

5. FISHERIES 5 - 1

5.1 Introduction 5 - 1

5.2 Government Legislation and Guidelines 5 - 1

5.3 Baseline Information 5 - 1

5.4 Sensitive Receivers 5 - 4

5.5 Potential Impacts from Construction and Operation 5 - 5

5.6 Evaluation of Impacts 5 - 6

5.7 Mitigation Measures 5 - 7

5.8 Environmental Monitoring & Audit 5 - 7

5.9 Conclusions 5 - 7

6. ECOLOGICAL IMPACT ASSESSMENT 6 - 1

6.1 Introduction 6 - 1

6.2 Environmental Legislation and Criteria 6 - 1

6.3 Terrestrial Ecology 6 - 2

6.4 Marine Ecology 6 - 20

7. CULTURAL HERITAGE 7 - 1

7.1 Introduction 7 - 1

7.2 Environmental Legislation, Policies, Standards and Criteria 7 - 1

7.3 Assessment Methodology 7 - 1

7.4 Baseline Conditions 7 - 1

7.5 Impact Assessment 7 - 5

7.6 Recommended Mitigation Measures 7 - 6

7.7 Environmental Monitoring & Audit 7 - 6

7.8 Conclusions 7 - 7

8. LANDSCAPE AND VISUAL IMPACT ASSESSMENT 8 - 1

8.1 Introduction 8 - 1

8.2 Relevant Legislation and Guidelines 8 - 1

8.3 Assessment Methodology 8 - 1

8.4 Project Description 8 - 4

8.5 Landscape and Visual Resources 8 - 6

8.6 Review of Planning and Development Control Framework 8 - 9

8.7 Landscape and Visual Impact Assessment during Construction and Operation 8 - 12

8.8 Recommended Mitigation Measures 8 - 21

8.9 Residual Impacts and Acceptability of the Proposal 8 - 22

8.10 Conclusion and Summary of Findings 8 - 23

9. SOLID WASTE MANAGEMENT ASSESSMENT 9 - 1

9.1 Introduction 9 - 1

9.2 Objectives 9 - 1

9.3 Nature and Type of Waste Materials 9 - 2

9.4 Potential Impacts and Mitigation Measures 9 - 5

9.5 Summary of Waste Management Plan (WMP) 9 - 9

9.6 Conclusions 9 - 12

10. HEALTH ASSESSMENT 10 - 1

10.1 Relevant Guidelines 10 - 1

10.2 Existing Conditions 10 - 1

10.3 Prediction of EMF 10 - 1

10.4 Mitigation Measures 10 - 1

10.5 Monitoring Requirements 10 - 1

10.6 Conclusion of the Predicted EMF Effect 10 - 1

11. MARINE ARCHAEOLOGICAL IMPACT ASSESSMENT 11 - 1

11.1 Introduction 11 - 1

11.2 Summary of the Findings 11 - 1

12. ENVIRONMENTAL MONITORING AND AUDIT REQUIREMENTS 12 - 1

12.1 Air Quality 12 - 1

12.2 Noise 12 - 1

12.3 Water Quality 12 - 1

12.4 Fisheries 12 - 1

12.5 Ecology 12 - 1

12.6 Cultural Heritage 12 - 2

12.7 Landscape and Visual 12 - 2

12.8 Waste Management 12 - 2

12.9 Health 12 - 2

12.10 Marine Archaeology 12 - 2

13. CONCLUSIONS 13 - 1

13.1 Introduction 13 - 1

13.2 Air Quality 13 - 1

13.3 Noise 13 - 1

13.4 Water Quality 13 - 2

13.5 Fisheries 13 - 2

13.6 Ecology 13 - 2

13.7 Cultural Heritage 13 - 3

13.8 Landscape and Visual 13 - 3

13.9 Waste Management 13 - 3

13.10 Health Effect 13 - 4

13.11 Marine Archaeology 12 - 4

13.12 Environmental Monitoring & Audit 13 - 4

14. SCHEDULE OF RECOMMENDED MITIGATION MEASURES 144 - 1

LISTS OF TABLES

~~Table 2-1~~

Table 2-1 Outline Construction Programme for the Proposed Project

Table 3-1 Summary of the Representative Sensitive Receivers (Air and Noise)

Table 3-2 Hong Kong Air Quality Objectives

Table 3-3 Annual Average of TSP and RSP Monitored at Tung Chung in 1999

Table 3-4 Emission Factors for General Construction Activities

Table 3-5 Predicted Hourly and Daily TSP Levels (mgm^-3) - Without Mitigation

Table 3-6 Predicted Hourly and Daily TSP Levels (mgm^-3) - With Mitigation

Table 3-7 Noise Standards for Daytime Construction Activities

Table 3-8 Powered Mechanical Equipment Used (Underground Cable)

Table 3-9 Powered Mechanical Equipment Used for Tunnel Construction

Table 3-10 Powered Mechanical Equipment Used (Submarine Cable)

Table 3-11 Predicted Noise Level at Representative Noise Sensitive Receivers

- Without Mitigation (L_eq30mindB(A))

Table 3-12 Predicted Noise Level at Representative Noise Sensitive Receivers

- With Use of Quiet Plant (L_eq30mindB(A))

Table 3-13 Predicted Noise Level at Representative Noise Sensitive Receivers

- With Use of Quiet Plant and Use of Movable Noise Barriers (L_eq30mindB(A))

Table 4-1 Water Quality Objectives (WQOs) for Southern Water Control Zone

Table 4-2 Different Groups of Inland Water Specified in the TM

Table 4-3 Standards for Effluents Discharged into Group D Inland Waters

Table 4-4 Marine Water Quality in the Southern Water Control Zone at Selected Stations

Table 4-5 Sediment Quality Criteria for the Classification of Sediment

Table 4-6 Monitoring Results of Sediment Quality between 1995 and 1999

Table 4-7 Description and Coordinates of the Water Quality Assessment Points

Table 4-8 Summary of Peak Concentration Suspended Solids at the Representative Sensitive Receivers (Direct Burying)

Table 4-9 Summary of Peak Concentration Suspended Solids at the Representative Assessment Receivers (Dredging)

Table 4-10 Summary of Peak Concentration Suspended Solids at the Representative Assessment Receivers (Dredging with Mitigation Measures)

Table 5-1 Total Value (HK$), Adult Catch (kg) and Fry Catch (tails) Displayed on a Total Production, Production per Hectare and Rank (per Hectare) Basis for the Fishing Zones in the Study Area (All Fishing Vessels)

Table 5-2 Five Most Abundant Fisheries Resources Caught within the Study Area. High and Medium Value Species are Underlined.

Table 6-1 Ecological Value of Forest in the Study Area

Table 6-2 Ecological Value of Tall Shrubland in Study Area

Table 6-3 Ecological Value of Shrubland and Grassland Mixture in Study Area

Table 6-4 Ecological Value of Wetland in the Study Area

Table 6-5 Ecological Value of Abandoned Farmland and Farmland in Study Area

Table 6-6 Ecological Value of Terrestrial Habitats in Rocky Shore and Sandy Beach in Study Area

Table 6-7 Ecological Value of Backshore Shrubland and Mangrove in Study Area

Table 6-8 Ecological Value of Brackish Mudflat and Plantation in Study Area

Table 6-9 Ecological Value of Wasteland and Village Area in Study Area

Table 6-10 Ecological Value of Stream Habitats in Study Area

Table 6-11 Evaluation of Floral Species of Ecological Interest Recorded within the Study Area

Table 6-12 Evaluation of Faunal Species of Ecological Interest Recorded within the Study Area

Table 6-13 Overall Impact Evaluation for Tall Shrubland

Table 6-14 Overall Impact Evaluation for South Lantau Country Park

Table 6-15 Overall Impact Evaluation for Village Area

Table 6-16 Categories Used in the Quantitative Surveys – Benthic Attributes

Table 6-17 Percentage Composition of Substratum and Associated Benthos Recorded along Transects at Location A, B and C

Table 6-18 Species of Hard and Soft Corals Recorded during Qualitative Survey within the Three Locations A, B and C at Chi Ma Wan Peninsula

Table 6-19 Density (m^-2) of Intertidal Fauna and Percentage Cover (%) of Sessile Fauna and Flora Recorded at South-east of Chi Ma Wan Peninsula

Table 6-20 Density (m^-2) of Intertidal Fauna Recorded on Mudflat at Pui O

Table 6-21 Ecological Value of the Subtidal Soft Benthos Assemblages within the Study Area

Table 6-22 Ecological Value of the Subtidal Hard-Bottom Habitat within the Study Area

Table 6-23 Ecological Value of Intertidal Mudflat and Mangrove within the Study Area

Table 6-24 Ecological Value of Rocky Shore and Sandy Shore within the Study Area

Table 6-25 Ecological Value of the Artificial Seawalls in the Study Area

Table 6-26 Ecological Value of the Marine Waters within the Study Area

Table 7-1 Historical Buildings and Features at Pui O

Table 8-1 Segmentation of the Cable Alignment

Table 8-2 Summary of Landscape Character Units (LCUs)

Table 8-3 Classification of Sensitive Visual Receivers (SVRs)

Table 8-4 Summary of Sensitive Visual Receivers (SVRs)

Table 8-5 Conflicts Related Landscape and Visual Impacts to the Existing Planning and

Development Control Framework

Table 8-6 Description of Disturbed Area

Table 8-7 Summary of Tree Survey at Pui O Tunnel Portal (2a) & Tai Long Wan landfall Area (3a)

Table 8-8 Summary of Disturbed Coastal Area

Table 8-9 Summary of Landscape Impacts (Without Landscape Mitigation Measures)

Table 8-10 Assessment of Visual Impacts (Without Landscape Mitigation Measures)

Table 8-11 Summary of Residual Landscape Impacts (With Landscape Mitigation Measures)

Table 8-12 Summary of Residual Visual Impacts (With Landscape Mitigation Measures)

Table 9-1 Estimated Flow and Loads Caused by the Construction Work Force

Table 9-2 Summary of Wastes to be generated

Table 9-3 Waste Management Plan

Table 10-1 Guidelines on Limits of Exposure to 50Hz Power Frequency Electric and Magnetic Fields Issued by ICNIRP

Table 14-1 Schedule of Recommended Mitigation Measures

LIST OF FIGURES

Figure 2.1 Proposed Route Alignment

Figure 2.2 Land Use in Chi Ma Wan Peninsula

Figure 2.3 Cross Sections of the Proposed Cable Tunnel

Figure 2.4 Outline Construction Programme

Figure 3.1 Locations of Selected Air and Noise Sensitive Receivers

Figure 3.2 Locations of Major Worksites with Dust Emission

Figure 3.3 Temporary Works Area for Tunnel Portal

Figure 3.4 Contours Plots for Hourly TSP Concentrations (With Mitigation)

Figure 3.5 Contours Plots for Daily TSP Concentrations (With Mitigation)

Figure 4.1 Proposed Installation Details for Submarine Cables at Breakwater

Figure 4.2 Relevant Water Sampling Stations in Southern Water Control Zone

Figure 4.3 Study Area for Water Quality Impact Assessment

Figure 4.4 Selected Water Quality Monitoring Locations for Modelling

Figure 5.1 Study Area for the Fisheries Impact Assessment

Figure 5.2 Direct Sampling of Fisheries Resources near the Dredging Works

Figure 6.1 Locations of Bird Count Points

Figure 6.2 Study Area and Locations of Various Habitat Types at Pui O

Figure 6.3 Study Area and Locations of Various Habitat Types at Tai Long Wan

Figure 6.4 Examples of Habitats Identified within the Study Area – Sheet 1 of 5

Figure 6.4 Examples of Habitats Identified within the Study Area – Sheet 2 of 5

Figure 6.4 Examples of Habitats Identified within the Study Area – Sheet 3 of 5

Figure 6.4 Examples of Habitats Identified within the Study Area – Sheet 4 of 5

Figure 6.4 Examples of Habitats Identified within the Study Area – Sheet 5 of 5

Figure 6.5 Photographic Records of the Proposed Tunnel Portal

Figure 6.6 Photographic Records of Some Rare Protected Vegetative Species

Figure 6.7 Species of Ecological Interest Recorded in Pui O

Figure 6.8 Species of Ecological Interest Recorded in Tai Long Wan, Lantau

Figure 6.9 Proposed Works in Pui O Portal

Figure 6.10 Proposed Works in Tai Long Wan Portal

Figure 6.11 Location of Detailed Dive Survey Conducted in Tai Long Wan, Lantau

Figure 6.12 Marine Ecological Profile of the Study Area

Figure 6.13 Marine Ecology Survey Sites

Figure 6.14 Typical Marine Organisms on the Subtidal Hard Bottom Habitats at Tai Long Wan

Figure 6.15 Hard Corals Identified within the Study Area

Figure 6.16 Soft Corals Identified within the Study Area

Figure 7.1 Historical Buildings and Features at Pui O

Figure 7.2 Pui O Tin Hau Temple and Associated Fung Shui Tree and Earth Shrine

Figure 7.3 Photographic Record of Wing On Bridge and Its Associated Earth God Shrine

Figure 7.4 Listed Archaeological Sites within the Study Area

Figure 7.5 Surface Collection at Ham Tin Valley

Figure 7.6 Locations of Auger Holes and Test Pits

Figure 8.1 Landscape and Visual Impact Study Methodology and Approach

Figure 8.2 Matrix for the Assessment of Landscape Impacts

Figure 8.3 Matrix for the Assessment of Visual Impacts

Figure 8.4 Proposed Alignment Pui O Portal and Landfall Areas Sheet 1 of 2

Figure 8.4 Proposed Alignment Pui O Portal and Landfall Areas Sheet 2 of 2

Figure 8.5 Photographic Records of the Study Area Sheet 1 of 2

Figure 8.5 Photographic Records of the Study Area Sheet 2 of 2

Figure 8.6 Landscape Character Units (LCUs) - Sheet 1 of 2

Figure 8.6 Landscape Character Units (LCUs) - Sheet 2 of 2

Figure 8.7 Sensitive Visual Receivers (SVRs) - Sheet 1 of 2

Figure 8.8 Planning & Development Control Framework - Sheet 1 of 2

Figure 8.8 Planning & Development Control Framework - Sheet 2 of 2

Figure 8.9 Mitigation Measures

Figure 8.10 Residual Landscape & Visual Impacts – Sheet 1 of 2

Figure 8.10 Residual Landscape & Visual Impacts – Sheet 2 of 2

Figure 8.11 Photomontage of Pui O Cable Tunnel Portal - Sheet 1 of 2

Figure 8.11 Photomontage of Pui O Cable Tunnel Portal - Sheet 2 of 2

Figure 8.12 Photomontage of Tai Long Landfall Area - Sheet 1 of 2

Figure 8.12 Photomontage of Tai Long Landfall Area - Sheet 2 of 2

ANNEXES

Annex 1 Approved Route Options Assessment

APPENDICES

Appendix A Calculation of Dust Emission Factor

Appendix B Input/Output Files for FDM Modelling

Appendix C Detailed Calculation of Construction Noise Impact Assessment

Appendix D Validation of the DELFT3D-PART Model

Appendix E Graphical Presentations and Contour Plots of the Depth Average Concentrations of Sediments