Agreement No. CE 74/98

WAN CHAI DEVELOPMENT PHASE II

COMPREHENSIVE FEASIBILITY STUDY

 

 

ENVIRONMENTAL IMPACT ASSESSMENT REPORT

 

 

 

CONTENTS

 

                                                VOLUME 1     -     TEXT

                                                VOLUME 2     -     FIGURES

                                                VOLUME 3     -     APPENDICES

                                                ANNEX A       -     CULTURAL HERITAGE SURVEY

 

 

VOLUME 1  -  TEXT

 

1      INTRODUCTION

1.1            Project Background

1.2            Objectives of the EIA Study

1.3            Considerations of Environmental Impact Assessment Ordinance

1.4            Structure of Final EIA Report

 

2      PROJECT DESCRIPTION

2.1            Site Location and Study Area

2.2            EIA Study Area

2.3            Project Requirements, Scope and Benefits

2.4            Project Design

2.5            Construction Methods and Engineering Requirements

2.6            Operation of the Project

2.7            Works Programme

2.8            Related Projects

 

3.     AIR QUALITY

3.1            Introduction

3.2            Environmental Legislation, Policies, Plans, Standards and Criteria

3.3            Description of the Environment

3.4            Sensitive Receivers

3.5            Assessment Methodology

3.6            Identification of Environmental Impacts

3.7            Prediction and Evaluation of Environmental Impacts

3.8            Mitigation of Adverse Environmental Impacts

3.9            Evaluation of Residual Impacts

3.10          Environmental Monitoring and Audit

3.11          Conclusion

 

4      NOISE

4.1            Introduction

4.2            Environmental Legislation, Policies, Plans, Standards and Criteria

4.3            Description of the Environment

4.4            Sensitive Receivers

4.5            Assessment Methodology

4.6            Identification of Environmental Impacts

4.7            Prediction and Evaluation of Environmental Impacts

4.8            Mitigation of Adverse Environmental Impacts

4.9            Evaluation of Residual Impacts

4.10          Construction Activities during Restricted Hours

4.11          Environmental Monitoring and Audit

4.12          Conclusion

 

5      HYDRODYNAMICS, WATER AND SEDIMENT QUALITY IMPACTS

5.1            Introduction

5.2            Environmental Legislation, Policies, Plans, Standards and Criteria

5.3            Description of the Environment

5.4            Water Sensitive Receivers

5.5            Assessment Methodology

5.6            Identification of Environmental Impact

5.7            Prediction and Evaluation of Environmental Impacts

5.8            Mitigation of Adverse Environmental Impacts

5.9            Evaluation of Residual Impacts

5.10          Environmental Monitoring and Audit

5.11          Conclusion

 

6      WASTE MANAGEMENT

6.1            Introduction

6.2            Environmental Legislation, Policies, Plans, Standards and Criteria

6.3            Assessment Methodology

6.4            Baseline Conditions

6.5            Identification of Potential Sources of Impact

6.6            Prediction and Evaluation of Environmental Impacts

6.7            Mitigation Measures

6.8            Evaluation of Residual Impacts

6.9            Environmental Audit

6.10          Conclusion

 

7      LAND CONTAMINATION

7.1            Introduction

7.2            Environmental Legislation, Policies, Plans, Standards and Criteria

7.3            Existing Land Contamination Condition

7.4            Identification of Sensitive Receivers

7.5            Description of the Environment

7.6            Assessment Methodology

7.7            Identification of Potential Environmental Impacts

7.8            Prediction and Evaluation of Environmental Impacts

7.9            Mitigation Measures for Land Contamination

7.10          Mitigation Measures for Workers’ Health and Safety

7.11          Environmental Monitoring and Audit Requirements

7.12          Conclusion

 

8      TERRESTRIAL ECOLOGY

8.1            Introduction

8.2            Environmental Legislation, Policies, Plans, Standards and Criteria

8.3            Description of the Environment

8.4            Assessment Methodology

8.5            Identification of Environmental Impacts

8.6            Prediction and Evaluation of Environmental Impacts

8.7            Mitigation of Adverse Environmental Impacts

8.8            Environmental Monitoring and Audit

8.9            Conclusion

8.10          References

 

9      MARINE ECOLOGY

9.1            Introduction

9.2            Environmental Legislation, Policies, Plans, Standards and Criteria

9.3            Description of the Environment

9.4            Assessment Methodology

9.5            Identification of Environmental Impacts

9.6            Prediction and Evaluation of Environmental Impacts

9.7            Mitigation of Adverse Environmental Impact

9.8            Environmental Monitoring and Audit

9.9            Conclusion

9.10          References

 

10     LANDSCAPE AND VISUAL IMPACT

10.1          Introduction

10.2          Scope and Content of Study

10.3          Review of the Planning and Development Control Framework

10.4          Summary of Views from Consultation Forums

10.5          Baseline Review of the Existing Environment

10.6          Designated Project 1 : Reclamation Works – Landscape and Visual Impact

Assessment

10.7          Designated Project 2 : WDII Major Roads – Landscape and Visual Impact

Assessment

10.8          Designated Project 3 : Kellett Island Marina – Landscape and Visual Impact

Assessment

10.9          Schedule 3 Project : WDII Development – Landscape and Visual Impact

Assessment

10.10        Conclusion

 

11     BIOGAS RISK ASSESSMENT

11.1          Introduction

11.2          Assessment Methodology and Criteria

11.3          Calculation of Potential Gas Emissions

11.4          Evaluation of Significance of Potential Gas Emissions

11.5          Mitigation Measures and Further Work

11.6          Conclusion

 

12     ENVIRONMENTAL MONITORING AND AUDIT

12.1          Introduction

12.2          Air Quality Impact

12.3          Noise Impact

12.4          Water Quality Impact

12.5          Waste Management

12.6          Land Contamination

12.7          Terrestrial Ecology

12.8          Marine Ecology

12.9          Landscape and Visual

12.10        Biogas

 

13     CONCLUSION

13.1          Introduction

13.2          Air Quality Impact

13.3          Noise Impact

13.4          Hydrodynamics, Water and Sediment Quality Impacts

13.5          Waste Management

13.6          Land Contamination

13.7          Terrestrial Ecology

13.8          Marine Ecology

13.9          Landscape and Visual

13.10        Biogas

13.11        Environmental Monitoring and Audit
13.12        Overall Conclusion

 

14     IMPLEMENTATION SCHEDULE OF THE PROPOSED MITIGATION MEASURES

 

VOLUME 2  -  FIGURES

 

Figure 1.1              Site Plan

Figure 1.2              Designated Projects

Figure 2.1              Road Layout & Land Use Proposals (Sheet 1 of 2)

Figure 2.2              Road Layout & Land Use Proposals (Sheet 2 of 2)

Figure 2.3              Proposed Dredged and Drained Reclamation Areas

Figure 2.4              Reclamation Stages

Figure 2.5              Construction Stages (Sheet 1 of 3)

Figure 2.6              Construction Stages (Sheet 2 of 3)

Figure 2.7              Construction Stages (Sheet 3 of 3)

Figure 3.1              Locations of Representative Air Sensitive Receivers (a,  b)

Figure 3.2              Locations of Construction Sites (a,  b)

Figure 3.3              2027 AM Peak Hour Forecast Traffic Flow (a,  b,  c,  d,  e,  f)

Figure 3.4              Locations of Noise Mitigation Measures along CWB & IECL

Figure 3.5              Locations of Portals and Ventilation Buildings Emissions (a,  b)

Figure 3.6              Contours of Cumulative Maximum 1-Hour Average NO2 Concentration in mg m-3 at 1.5 m above Ground (a,  b,  c,  d)

Figure 3.7              Contours of Cumulative Maximum 1-Hour Average NO2 Concentration in mg m-3 at 10 m above Ground (a,  b,  c,  d)

Figure 3.8              Contours of Cumulative Maximum 1-Hour Average NO2 Concentration in mg m-3 at 20 m above Ground (a,  b,  c,  d)

Figure 3.9              Contours of Cumulative Maximum 1-Hour Average NO2 Concentration in mg m-3 at 30 m above Ground (a,  b,  c,  d)

Figure 3.10            Contours of Cumulative Maximum 1-Hour Average NO2 Concentration in mg m-3 at 70 m above Ground (a,  b,  c,  d)

Figure 3.11            Contours of Cumulative Maximum 1-Hour Average NO2 Concentration in mg m-3 at 110 m above Ground (a,  b,  c,  d)

Figure 3.12            Contours of Cumulative Maximum 24-Hour Average NO2 Concentration in mg m-3 at 1.5 m above Ground (a,  b,  c,  d)

Figure 3.13            Contours of Cumulative Maximum 24-Hour Average RSP Concentration in mg m-3 at 1.5 m above Ground (a,  b,  c,  d)

Figure 3.14            Contours of Cumulative Maximum 1-Hour Average CO Concentration in mg m-3 at 1.5 m above Ground (a,  b,  c,  d)

Figure 3.15            Contours of Cumulative Maximum 1-Hour Average TSP Concentration in mg m-3 at 1.5 m above Ground (Mitigated) (a,  b,  c,  d)

Figure 3.16            Contours of Cumulative Maximum 24-Hour Average TSP Concentration in mg m-3 at 1.5 m above Ground (Mitigated) (a,  b,  c,  d)

Figure 4.1              Locations of Representative Noise Sensitive Receivers

Figure 4.2              The Extent of Porous Asphalt Road Surfacing

Figure 4.3              Locations of Ventilation Buildings

Figure 5.1              Locations of EPD’s Marine Water Quality Monitoring Stations

Figure 5.2              Locations of Water Sensitive Receivers (a,  b)

Figure 5.3              Coastline Configurations

Figure 5.4              Reclamation Phasing

Figure 5.5              Coastline Configuration for Construction Scenario 2A

Figure 5.6              Coastline Configuration for Construction Scenario 2B

Figure 5.7              Marine Works Programme of Central Reclamation Phase III, Yau Tong Bay Development and Wan Chai Development Phase II Projects between 2002 and 2007

Figure 5.8A           Proposed Cooling Water Discharge Locations (Sheet 1 of 2)

Figure 5.8B           Proposed Cooling Water Discharge Locations (Sheet 2 of 2)

Figure 5.9              Typical Configuration of Silt Curtains and Screens

Figure 5.10            Typical Design of a Centre-Tension Silt Curtain Section

Figure 5.11            Recommended Silt Curtain Mooring System

Figure 5.12            Locations of “Cross Sections” of Hydrodynamic Model

Figure 6.1              Site Investigation Plan

Figure 7.1              Sampling Plan for A King Marine

Figure 7.2              Sampling Plan for Existing RHKYC

Figure 8.1              Study Area of the Ecological Assessment

Figure 9.1              Locations of Artificial Seawalls

Figure 10.1            Study Area

Figure 10.2            Baseline Landscape Resources

Figure 10.3            Baseline Landscape Character Areas

Figure 10.4            Existing Aerial View of the Study Area - Aerial Photograph Views E and F

Figure 10.5            Existing Aerial View of the Study Area - Aerial Photograph View G

Figure 10.6            Existing Views of the Study Area to the West - At Grade Photographs A and B

Figure 10.7            Existing Views of the Study Area to the East - At Grade Photographs C and D

Figure 10.8            Draft Recommended Outline Development Plan

Figure 10.9            Schedule 2 DP1 – Reclamation - Extent of Works, Primary Zone of Visual Influence and Primary Visually Sensitive Receivers in Construction Phase

Figure 10.10          Schedule 2 DP1 – Reclamation - Extent of Works, Primary Zone of Visual Influence and Primary Visually Sensitive Receivers in Operation Phase

Figure 10.11          Schedule 2 DP2 – WDII Roads - Extent of Works, Primary Zone of Visual Influence and Primary Visually Sensitive Receivers in Construction Phase

Figure 10.12          Schedule 2 DP2 – WDII Roads - Extent of Works, Primary Zone of Visual Influence and Primary Visually Sensitive Receivers in Operation Phase

Figure 10.13          Schedule 2 DP3 – Kellett Island Marina - Extent of Works, Primary Zone of Visual Influence and Primary Visually Sensitive Receivers in Construction Phase

Figure 10.14          Schedule 2 DP3 – Kellett Island Marina - Extent of Works, Primary Zone of Visual Influence and Primary Visually Sensitive Receivers in Operation Phase

Figure 10.15          Schedule 3 Project – WDII - Extent of Works, Primary Zone of Visual Influence and Primary Visually Sensitive Receivers in Construction Phase

Figure 10.16          Schedule 3 Project – WDII - Extent of Works, Primary Zone of Visual Influence and Primary Visually Sensitive Receivers in Operation Phase

Figure 10.17          Secondary Zones of Visual Influence and Secondary Visually Sensitive Receivers

Figure 10.18          Master Landscape Plan

Figure 10.19          Sections AA, BB and CC

Figure 10.20          Sections DD and EE

Figure 10.21          Section through Pedestrian Link to Victoria Park

Figure 10.22          Interim Master Landscape Plan - without North-South Link Roads

Figure 10.23          Aerial Perspective

Figure 10.24          Schedule 2 DP1 – Reclamation - Landscape Impacts in Construction Phase

Figure 10.25          Schedule 2 DP1 – Reclamation - Visual Impacts in Construction Phase

Figure 10.26          Schedule 2 DP1 – Reclamation - Visual Impacts in Operation Phase

Figure 10.27          Schedule 2 DP2 - WDII Major Roads - Mitigation Measures in Operation Phase

Figure 10.28          Schedule 2 DP2 - WDII Major Roads - Landscape Impacts in Construction Phase

Figure 10.29          Schedule 2 DP2 - WDII Major Roads - Visual Impacts in Construction Phase

Figure 10.30          Schedule 2 DP2 - WDII Major Roads - Visual Impacts in Operation Phase

Figure 10.31          Schedule 2 DP3 - Kellett Island Marina - Landscape Impacts in Construction Phase

Figure 10.32          Schedule 2 DP3 - Kellett Island Marina - Visual Impacts in Construction Phase

Figure 10.33          Schedule 2 DP3 - Kellett Island Marina - Visual Impacts in Operation Phase

Figure 10.34          Schedule 3 Project - WDII - Landscape Impacts in Construction Phase

Figure 10.35          Schedule 3 Project - WDII - Landscape Character Impacts in Operation Phase

Figure 10.36          Schedule 3 Project - WDII - Visual Impacts in Construction Phase

Figure 10.37          Schedule 3 Project - WDII - Visual Impacts in Operation Phase

Figure 10.38          Schedule 3 Project - WDII - Viewpoint No. 1 - Existing View

Figure 10.39          Schedule 3 Project - WDII - Viewpoint No. 1 - Day 1 - Without Mitigation

Figure 10.40          Schedule 3 Project - WDII - Viewpoint No. 1 - Day 1 - With Mitigation

Figure 10.41          Schedule 3 Project - WDII - Viewpoint No. 1 - Year 10 - With Mitigation

Figure 10.42          Schedule 3 Project - WDII - Viewpoint No. 2 - Existing View

Figure 10.43          Schedule 3 Project - WDII - Viewpoint No. 2 - Day 1 - Without Mitigation

Figure 10.44          Schedule 3 Project - WDII - Viewpoint No. 2 - Day 1 - With Mitigation

Figure 10.45          Schedule 3 Project - WDII - Viewpoint No. 2 - Year 10 - With Mitigation

Figure 10.46          Schedule 3 Project - WDII - Viewpoint No. 3 - Existing View

Figure 10.47          Schedule 3 Project - WDII - Viewpoint No. 3 - Day 1 - Without Mitigation

Figure 10.48          Schedule 3 Project - WDII - Viewpoint No. 3 - Day 1- With Mitigation

Figure 10.49          Schedule 3 Project - WDII - Viewpoint No. 3 - Year 10 - With Mitigation

Figure 10.50          Schedule 3 Project - WDII - Viewpoint No. 4A - Existing View

Figure 10.51          Schedule 3 Project - WDII - Viewpoint No. 4A - Day 1 - Without Mitigation

Figure 10.52          Schedule 3 Project - WDII - Viewpoint No. 4A - Day 1 - With Mitigation

Figure 10.53          Schedule 3 Project - WDII - Viewpoint No. 4A - Year 10 - With Mitigation

Figure 10.54          Schedule 3 Project - WDII - Viewpoint No. 4B - Existing View

Figure 10.55          Schedule 3 Project - WDII - Viewpoint No. 4B - Day 1 - Without Mitigation

Figure 10.56          Schedule 3 Project - WDII - Viewpoint No. 4B - Day 1 - With Mitigation

Figure 10.57          Schedule 3 Project - WDII - Viewpoint No. 4B - Year 10 - With Mitigation

Figure 10.58          Schedule 3 Project - WDII - Viewpoint No. 5 - Existing View

Figure 10.59          Schedule 3 Project - WDII - Viewpoint No. 5 - Day 1 - Without Mitigation

Figure 10.60          Schedule 3 Project - WDII - Viewpoint No. 5 - Day 1 - With Mitigation

Figure 10.61          Schedule 3 Project - WDII - Viewpoint No. 5 - Year 10 - With Mitigation

Figure 10.62          Schedule 2 DP2 - WDII Major Roads - Viewpoint No. 6 - Existing View

Figure 10.63          Schedule 2 DP2 - WDII Major Roads - Viewpoint No. 6 - Day 1 - Without Mitigation

Figure 10.64          Schedule 2 DP2 - WDII Major Roads - Viewpoint No. 6 - Day 1 - With Mitigation

Figure 10.65          Schedule 2 DP2 - WDII Major Roads - Viewpoint No. 6 - Year 10 - With Mitigation

Figure 10.66          Schedule 2 DP2 - WDII Major Roads - Viewpoint No. 7 - Existing View

Figure 10.67          Schedule 2 DP2 - WDII Major Roads - Viewpoint No. 7 - Day 1 - Without Mitigation

Figure 10.68          Schedule 2 DP2 - WDII Major Roads - Viewpoint No. 7 - Day 1 - With Mitigation

Figure 10.69          Schedule 2 DP2 - WDII Major Roads - Viewpoint No. 7 - Year 10 - With Mitigation

 

 

 

VOLUME 3  -  APPENDICES

 

Appendix 2.1         Wan Chai Development Phase II:  Construction Programme

Appendix 3.1         Summary of Major Dust Generating Activities

Appendix 3.2         Calculation of Dust Emission Factors

Appendix 3.3         Sample Computer Output of FDM Calculation

Appendix 3.4         Calculation of Emission Factor in Year 2027 (Open Road)

Appendix 3.5         Sample Computer Output of CALINE4 Calculation

Appendix 3.6         Calculation of Emission Factor in Year 2027 (Portal)

Appendix 3.7         Sample Computer Output of ISCST3 Calculation

Appendix 3.8         Dust Levels from Different Construction Activities (Unmitigated)

Appendix 3.9         Summary of the Predicted Cumulative 1-Hour NO2, 24-Hour NO2, 24-Hour RSP and 1-Hour CO Concentrations at Elevations from 1.5 m to 150 m above Ground

Appendix 3.10       Dust Levels from Different Construction Activities (Mitigated)

Appendix 4.1         Locations of ‘New’ Roads

Appendix 4.2         Powered Mechanical Equipment (PME) for Different Construction Tasks during Normal Daytime Working Hours

Appendix 4.3         Detail Calculation and Results of Construction Noise Impacts During Normal Daytime Working Hours

Appendix 4.4         Powered Mechanical Equipment (PME) for Different Construction Tasks During Restricted Hours

Appendix 4.5         Detail Calculation and Results of Construction Noise Impacts During Restricted Hours

Appendix 4.6         Traffic Noise Assessment Results

Appendix 4.7         Sample Output File

Appendix 4.8         Ventilation Shaft Noise Assessment

Appendix 4.9         Endorsed Letter for Traffic Flow Year 2027 from Transport Department

Appendix 4.10       Helicopter Noise Assessment

Appendix 5.1         Pollution Loading Inventory for Water Quality Modelling

Appendix 5.2         Sea Level and Rainfall Observations 1995 to 1999

Appendix 5.3         Water Quality Modelling Results:  Construction Scenarios

Appendix 5.4         Predicted Suspended Solids Concentrations at Water Sensitive Receivers for Construction Scenario 2B

Appendix 5.5         Temporal Variations of SS Elevations at the Various Water Sensitive Receivers during Construction Phase

Appendix 5.6         Water Quality Modelling Results:  Interim Construction Stage

Appendix 5.7         Hydrodynamic and Water Quality Modelling Results:  Baseline Scenario

Appendix 5.8         Hydrodynamic and Water Quality Modelling Results:  Operation Scenario

Appendix 5.9         Evaluation of the Residual Impacts of Suspended Solids after the implementation of the mitigation measures for the marine works considered in Scenario 2A

Appendix 5.10       Evaluation of the Residual Impacts of Suspended Solids after the implementation of the mitigation measures for the marine works considered in Scenario 2B

Appendix 7.1         Contamination Assessment Plan – A King Marine and the Royal Hong Kong Yacht Club

Appendix 8.1         Wan Chai Development Phase II:  Study and Adjacent Area Bird Species List

Appendix 9.1         Wan Chai Development Phase II:  Study and Adjacent Area Species List

 

 

 

ANNEX A  -  CULTURAL HERITAGE SURVEY