SA1 to Agreement No. CE 54/2001 (CE)

 

WAN CHAI DEVELOPMENT PHASE II

PLANNING AND ENGINEERING REVIEW

 

 

ENVIRONMENTAL IMPACT ASSESSMENT REPORT

for

WAN CHAI DEVELOPMENT PHASE II AND CENTRAL-WAN CHAI BYPASS

 

 

CONTENTS

 

 

                                                                                                                                               Page

VOLUME 1 – WDII Project

Schedule 3 DP: Engineering Feasibility Study of WDII Project

 

1          INTRODUCTION..................................................................................................... 1-1

1.1        Project Background........................................................................................... 1-1

1.2        WDII Review................................................................................................... 1-2

1.3        Harbour-Front Enhancement Review.................................................................. 1-3

1.4        Environmental Impact Assessment..................................................................... 1-4

1.5        Objectives and Scope of the EIA Study............................................................... 1-5

1.6        Designated Projects under the EIAO.................................................................. 1-6

1.7        Relevant Approved EIA Reports...................................................................... 1-10

1.8        Structure of this EIA Report............................................................................. 1-10

 

2          PROJECT DESCRIPTION....................................................................................... 2-1

2.1        Site Location..................................................................................................... 2-1

2.2        EIA Study Area................................................................................................ 2-1

2.3        Review of Previous EIAs................................................................................... 2-2

2.4        Project Requirements, Scope and Benefits......................................................... 2-13

2.5        Consideration of Alternatives and Development of Preferred Option................... 2-17

2.6        Construction Methods and Engineering Requirements......................................... 2-33

2.7        Operation of the Project................................................................................... 2-37

2.8        Works Programme........................................................................................... 2-37

2.9        Related Projects.............................................................................................. 2-38

 

3          AIR QUALITY.......................................................................................................... 3-1

3.1        Introduction....................................................................................................... 3-1

3.2        Environmental Legislation, Policies, Plans, Standards and Criteria......................... 3-1

3.3        Description of the Environment........................................................................... 3-2

3.4        Sensitive Receivers............................................................................................ 3-3

3.5        Identification of Environmental Impacts............................................................... 3-6

3.6        Assessment Methodology................................................................................... 3-8

3.7        Prediction and Evaluation of Environmental Impacts........................................... 3-36

3.8        Mitigation of Adverse Environmental Impacts.................................................... 3-49

3.9        Evaluation of Residual Impacts......................................................................... 3-52

3.10      Environmental Monitoring and Audit.................................................................. 3-55

3.11      Conclusion....................................................................................................... 3-56

 

4          NOISE........................................................................................................................ 4-1

4.1        Introduction....................................................................................................... 4-1

4.2        Environmental Legislation, Policies, Plans, Standards and Criteria......................... 4-1

4.3        Description of the Environment........................................................................... 4-6

4.4        Sensitive Receivers............................................................................................ 4-7

4.5        Assessment Methodology................................................................................... 4-9

4.6        Identification of Environmental Impacts............................................................. 4-17

4.7        Prediction and Evaluation of Environmental Impacts........................................... 4-18

4.8        Mitigation of Adverse Environmental Impacts.................................................... 4-22

4.9        Evaluation of Residual Impacts......................................................................... 4-28

4.10      Construction Activities during Restricted Hours................................................. 4-30

4.11      Environmental Monitoring and Audit.................................................................. 4-32

4.12      Conclusion....................................................................................................... 4-33

 

5          HYDRODYNAMICS AND WATER QUALITY...................................................... 5-1

5.1        Introduction....................................................................................................... 5-1

5.2        Water Sensitive Receivers................................................................................. 5-1

5.3        Environmental Legislation, Policies, Plans, Standards and Criteria......................... 5-2

5.4        Description of the Environment........................................................................... 5-6

5.5        Identification of Environmental Impact.............................................................. 5-10

5.6        Assessment Methodology................................................................................. 5-13

5.7        Prediction and Evaluation of Environmental Impacts........................................... 5-53

5.8        Mitigation of Adverse Environmental Impacts.................................................... 5-83

5.9        Evaluation of Residual Impacts......................................................................... 5-99

5.10      Environmental Monitoring and Audit................................................................ 5-100

5.11      Conclusion..................................................................................................... 5-100

 

6          WASTE MANAGEMENT......................................................................................... 6-1

6.1        Introduction....................................................................................................... 6-1

6.2        Environmental Legislation, Policies, Plans, Standards and Criteria......................... 6-1

6.3        Assessment Methodology................................................................................... 6-3

6.4        Baseline Conditions............................................................................................ 6-6

6.5        Identification of Potential Sources of Impact...................................................... 6-10

6.6        Prediction and Evaluation of Environmental Impacts........................................... 6-10

6.7        Mitigation Measures......................................................................................... 6-16

6.8        Evaluation of Residual Impacts......................................................................... 6-21

6.9        Environmental Audit......................................................................................... 6-21

6.10      Conclusion....................................................................................................... 6-22

 

7          LAND CONTAMINATION...................................................................................... 7-1

7.1        Introduction....................................................................................................... 7-1

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

7.3        Assessment Methodology................................................................................... 7-1

7.4        Review of Previous WDIICFS EIA Study........................................................... 7-1

7.5        Potential Contaminative Land Uses..................................................................... 7-3

7.6        Sensitive Receivers............................................................................................ 7-5

7.7        Identification of Environmental Impacts............................................................... 7-5

7.8        Land Contamination Assessment........................................................................ 7-7

7.9        Evaluation and Prediction of Impacts................................................................. 7-12

7.10      Mitigation Measures......................................................................................... 7-12

7.11      Residual Environmental Impact......................................................................... 7-14

7.12      Environmental Monitoring and Audit (EM&A) Requirements.............................. 7-14

7.13      Conclusion....................................................................................................... 7-14

 

 

8          SEWERAGE IMPACT AND SEWAGE TREATMENT IMPLICATIONS............. 8-1

8.1        Introduction....................................................................................................... 8-1

8.2        Development Proposals and Future Population..................................................... 8-1

8.3        Design Criteria and Assumptions........................................................................ 8-1

8.4        Assessment of Impact....................................................................................... 8-3

8.5        Proposed Upgrading Works................................................................................ 8-6

 

9          MARINE ECOLOGY................................................................................................ 9-1

9.1        Introduction....................................................................................................... 9-1

9.2        Environmental Legislation, Policies, Plans, Standards and Criteria......................... 9-1

9.3        Assessment Methodology................................................................................... 9-2

9.4        Description of the Environment........................................................................... 9-5

9.5        Identification of Ecological Impacts................................................................... 9-14

9.6        Evaluation of Ecological Impacts....................................................................... 9-16

9.7        Mitigation of Adverse Environmental Impact..................................................... 9-21

9.8        Evaluation of Residual Impacts......................................................................... 9-22

9.9        Evaluation of Cumulative Impacts..................................................................... 9-23

9.10      Environmental Monitoring and Audit.................................................................. 9-23

9.11      Conclusion....................................................................................................... 9-24

9.12      References...................................................................................................... 9-24

 

10.       LANDSCAPE AND VISUAL IMPACT ASSESSMENT........................................ 10-1

10.1      Introduction..................................................................................................... 10-1

10.2      Environmental Legislation, Standards and Guidelines.......................................... 10-2

10.3      Assessment Methodology................................................................................. 10-3

10.4      Scope and Content of the Study........................................................................ 10-7

10.5      Review of Planning and Development Control Framework................................. 10-9

10.6      Comments on Landscape and Visual Issues received during Consultations......... 10-12

10.7      Baseline Study............................................................................................... 10-14

10.8      Landscape Impact Assessment....................................................................... 10-35

10.9      Visual Impact Assessment.............................................................................. 10-49

10.10    Conclusion..................................................................................................... 10-62

 

11        CULTURAL HERITAGE....................................................................................... 11-1

11.1      Introduction..................................................................................................... 11-1

11.2      Environmental Legislation and Standards........................................................... 11-1

11.3      Assessment Methodology................................................................................. 11-2

11.4      Baseline Conditions.......................................................................................... 11-2

11.5      Geophysical Survey.......................................................................................... 11-3

11.6      Mitigation of Adverse Impacts.......................................................................... 11-4

11.7      Residual Environmental Impact......................................................................... 11-4

11.8      Environmental Monitoring and Audit Requirements............................................ 11-4

11.9      Conclusion....................................................................................................... 11-4

 

12        ENVIRONMENTAL MONITORING AND AUDIT.............................................. 12-1

12.1      Introduction..................................................................................................... 12-1

12.2      Air Quality Impact........................................................................................... 12-1

12.3      Noise Impact................................................................................................... 12-3

12.4      Water Quality Impact....................................................................................... 12-3

12.5      Waste Management......................................................................................... 12-3

12.6      Land Contamination......................................................................................... 12-4

12.7      Marine Ecology............................................................................................... 12-4

12.8      Landscape and Visual...................................................................................... 12-4

12.9      Cultural Heritage............................................................................................. 12-5

 

13        IMPLEMENTATION SCHEDULE OF THE PROPOSED MITIGATION MEASURES
           
.................................................................................................................................. 13-1

 

14        EIA FINDINGS AND RECOMMENDATIONS..................................................... 14-1

14.1      Introduction..................................................................................................... 14-1

14.2      DP1 - Central-Wanchai Bypass including its road tunnel..................................... 14-2

14.3      DP2 - WDII major roads (including Road P2).................................................. 14-11

14.4      DP3 - Reclamation works including associated dredging works......................... 14-15

14.5      DP4 - Temporary typhoon shelter................................................................... 14-23

14.6      DP5 - Wan Chai East Sewage Outfall............................................................. 14-26

14.7      DP6 - Cross harbour Water Mains from Wan Chai To Tsim Sha Tsui............... 14-29

 

15        CONCLUSION........................................................................................................ 15-1

15.1      Introduction..................................................................................................... 15-1

15.2      Environmental Outcomes................................................................................ 15-19

15.3      Air Quality Impact......................................................................................... 15-29

15.4      Noise Impact................................................................................................. 15-31

15.5      Water Quality Impacts................................................................................... 15-33

15.6      Waste Management Implications..................................................................... 15-34

15.7      Land Contamination Impact............................................................................ 15-35

15.8      Marine Ecological Impact............................................................................... 15-35

15.9      Landscape and Visual Impact......................................................................... 15-36

15.10    Cultural Heritage Impact................................................................................ 15-37

15.11    Environmental Monitoring and Audit................................................................ 15-38

15.12    Overall Conclusion......................................................................................... 15-38

 

 

LIST OF TABLES

 

Table 1.1       Schedule 2 Designated Projects under this Project

Table 2.1       Comparison of Trunk Road Tunnel Variations

Table 2.2       Comparison of Tunnel and Flyover Options

Table 3.1       Hong Kong Air Quality Objectives

Table 3.2       Tunnel Air Quality Guidelines (TAQG)

Table 3.3       Annual Average Concentrations of Pollutants in 2006

Table 3.4       Details of Air Sensitive Receivers

Table 3.5       Emission Factors for Construction Activities and Wind Erosion

Table 3.6       Different Major Dust Generating Activities in The Worst Case Scenarios During Construction Phase

Table 3.7       Annual Average Concentrations of Pollutants in Past Five Years

Table 3.8       Vehicle Classes In EMFAC-HK Model

Table 3.9       Emission Factors for Year 2016 for Different Vehicle Classes (EMFAC-HK)

Table 3.10      Portal and Ventilation Building Emissions

Table 3.11      Design of Ventilation Buildings

Table 3.12      Summary of Odour Patrol Results in Year 2006 Survey

Table 3.13      Summary of Odour Patrol Results in Year 2007 Survey

Table 3.14      Results of Olfactometry Analysis (Year 2006)

Table 3.15      Results of Olfactometry Analysis (Year 2007)

Table 3.16      Existing Odour Emission Inventory for the Worst Case Scenario

Table 3.17      Conversion Factors to 5-Second Mean Concentration

Table 3.18      Predicted Cumulative Maximum 1-Hour Average TSP Concentrations At 1.5m above Ground

Table 3.19      Predicted Cumulative Maximum 24-Hour Average TSP Concentrations for at 1.5m above Ground

Table 3.20      Predicted Cumulative Maximum 1-Hour Average TSP Concentrations at 5m above Ground

Table 3.21      Predicted Cumulative Maximum 24-Hour Average TSP Concentrations at 5m above Ground

Table 3.22      Predicted Cumulative Maximum 1-Hour Average NO2 Concentrations at the Representative ASRs at Different Elevations

Table 3.23      Predicted Cumulative Maximum 24-Hour Average NO2 Concentrations at the Representative ASRs at Different Elevations

Table 3.24      Predicted Cumulative Maximum 24-Hour Average RSP Concentrations at the Representative ASRs at Different Elevations

Table 3.25      Predicted Odour Concentrations at the Representative ASRs (Based on the Existing Odour Emission Rates) under the Worst Case Condition

Table 3.26      Predicted Odour Concentrations at the Representative ASRS (Mitigated Scenario) under the Worst Case Condition

Table 3.27      Number of Hour Exceeding the Odour Criterion at the Representative ASRs (Mitigated Scenario) in a Year

Table 4.1       Construction Noise Criteria for Activity other than Percussive Piling

Table 4.2       Acceptable Noise Levels for Percussive Piling

Table 4.3       Permitted Hours of Operation for Percussive Piling

Table 4.4       Acceptable Noise Level for Fixed Plant Noise

Table 4.5       Representative Existing and Planned Noise Sensitive Receivers

Table 4.6       Summary of Construction Tasks and Stages

Table 4.7       Number of Ventilation Fans required for the Proposed Ventilation Buildings under Congestion Condition

Table 4.8       Summary of Unmitigated Construction Noise Levels at Representative NSRs During Normal Daytime Working Hours

Table 4.9       Summary of Mitigated Construction Noise Levels at Representative NSRs during Normal Daytime Working Hours

Table 4.10      Construction Noise Residual Impacts

Table 4.11      Summary of Unmitigated Construction Noise Levels at Representative NSRs During Restricted Hours

Table 4.12      Summary of Mitigated Construction Noise Levels at Representative NSRs During Restricted Hours

Table 5.1       Summary of Water Quality Objectives for Victoria Harbour WCZ

Table 5.2       WSD’s Water Quality Criteria for Flushing Water at Sea Water Intakes

Table 5.3       Summary Statistics of 2005 Marine Water Quality in Victoria Harbour

Table 5.4       Summary Statistics of 2005 Marine Water Quality at the Causeway Bay Typhoon Shelter

Table 5.5       Summary of Information of Water Cooling Systems

Table 5.6       Flow Rates of Water Cooling Systems for Thermal Plume Modelling.

Table 5.7       Summary of Parameters for Thermal Plume Model (Delft3D-FLOW)

Table 5.8       Summary of Parameters for Modelling of Residual Chorine (Delft3D-PART)

Table 5.9       Summary of Parameters for Sediment Plume Model (Delft3D-PART)

Table 5.10      Maximum Dredging Rates of WDII and CWB - Scenario 2A (early 2009)

Table 5.11      Maximum Dredging and Filling Rates of WDII and CWB - Scenario 2B (late 2009 to 2010)

Table 5.12      Maximum Dredging and Filling Rates of WDII and CWB - Scenario 2C (2011)

Table 5.13      Coastal Developments Incorporated in the Construction and Operational Phase Coastline Configurations

Table 5.13a    Summary of Modelling Scenarios

Table 5.14      Pollution Loading from Stonecutters Sewage Treatment Works under HATS

Table 5.15      Locations and Pollution Loadings Survey Results (in 2000) of Wan Chai Stormwater Outfalls

Table 5.16      Pollution Loading Inventory for Wan Chai, Causeway Bay and North Point - Year 2011 Dry Season

Table 5.17      Pollution Loading Inventory for Wan Chai, Causeway Bay and North Point - Year 2011 Wet Season

Table 5.18      Pollution Loading Inventory for Wan Chai, Causeway Bay and North Point - Year 2016 Dry Season

Table 5.19      Pollution Loading Inventory for Wan Chai, Causeway Bay and North Point - Year 2016 Wet Season

Table 5.20      Discharge Rates at Sections to the East and West of Victoria Harbour

Table 5.21      Operation Scenario – Temperature Elevations at Cooling Water Intakes

Table 5.22      Construction Scenario 2A – Suspended Solids Concentrations at Sensitive Receivers (Base Case Scenario)

Table 5.22a    Construction Scenario 2A – Suspended Solids Concentrations at Sensitive Receivers (Sensitivity Test using Higher Dredging Rate for Gas Main Construction)

Table 5.23      Construction Scenario 2B – Suspended Solids Concentrations at Sensitive Receivers

Table 5.24      Construction Scenario 2C – Suspended Solids Concentrations at Sensitive Receivers

Table 5.25      Predicted Water Quality at Temporary Embayment at Interim Construction Stage - Wet Season

Table 5.26      Predicted Water Quality at Temporary Embayment at Interim Construction Stage - Dry Season

Table 5.27      Comparison of Phase I Marine Site Investigation Sediment Elutriate Test Results with the Water Quality Standards

Table 5.28      Comparison of Phase II Marine Site Investigation Sediment Elutriate Test Results with the Water Quality Standards

Table 5.29      Comparison of WDIICFS Marine Site Investigation Sediment Elutriate Test Results with the Water Quality Standards

Table 5.30      Calculation of the Effects of Increased Suspended Sediment Concentrations on Dissolved Oxygen Concentrations under Scenario 2A

Table 5.30a    Calculation of the Effects of Increased Suspended Sediment Concentrations on Dissolved Oxygen Concentrations under Scenario 2A (Sensitivity Test using Higher Dredging Rate for Gas Main Construction)

Table 5.31      Calculation of the Effects of Increased Suspended Sediment Concentrations on Dissolved Oxygen Concentrations under Scenario 2B

Table 5.32      Calculation of the Effects of Increased Suspended Sediment Concentrations on Dissolved Oxygen Concentrations under Scenario 2C

Table 5.33      Maximum Elevations of Nutrient Concentrations under Scenario 2A

Table 5.34      Maximum Elevations of Nutrient Concentrations under Scenario 2B

Table 5.35      Maximum Elevations of Nutrient Concentrations under Scenario 2C

Table 5.36      Maximum Elevations of PCBs

Table 5.39      Application of Silt Screens at Interim Construction Stages

Table 5.40      Construction Scenario 2A –Predicted SS levels at the Seawater Intakes after the Implementation of Mitigation Measures (Base Case Scenario)

Table 5.40a    Construction Scenario 2A –Predicted SS levels at the Seawater Intakes after the Implementation of Mitigation Measures (Sensitivity Test using Higher Dredging Rate for Gas Main Construction)

Table 5.41      Construction Scenario 2B – Predicted SS levels at the Seawater Intakes after the Implementation of Mitigation Measures

Table 5.42      Construction Scenario 2C – Predicted SS levels at the Seawater Intakes after the Implementation of Mitigation Measures

Table 5.43      Predicted SS Elevations at Corals for Construction Scenario 2A - Mitigated

Table 5.44      Predicted SS Elevations at Corals for Construction Scenario 2A - Mitigated (Sensitivity Test using Higher Dredging Rate for Gas Main Construction)

Table 5.45      Predicted SS Elevations at Corals for Construction Scenario 2B – Mitigated

Table 5.46      Predicted SS Elevations at Corals for Construction Scenario 2C – Mitigated

Table 5.47      Recommended Maximum Dredging Rates

Table 5.48      Cumulative Impact on Quarry Bay Intake

Table 6.1       Sediment Quality Criteria for the Classification of Sediment

Table 6.2       Test Species for Biological Testing

Table 6.3       Test Endpoints and Decision Criteria for Biological Testing

Table 6.4       Results of Biological Screening of Category M and Category H (>10xlcel) Samples

Table 6.5       Record of Floating Refuse Collected wthin the Project Area

Table 6.6       Summary of Waste Handling Procedures and Disposal Routes

Table 7.1       Potential Contaminative Land Use Within the Study Area

Table 7.2       List of Aerial Photographs Reviewed (A King Marine)

Table 7.3       Details of Existing Potential Contaminative Land Use

Table 7.4       Estimated Quantity of Contaminated Soil

Table 7.5       Findings of Site Reconnaissance

Table 8.1       Peaking Factors

Table 8.2       Minimum Pipe Gradients for Sewer Design

Table 8.3       Flow Estimate for New Developments

Table 8.4       WDII Flows to Deep Trunk Sewer

Table 9.1       Criteria and Evaluation of Ecological Importance of Marine Habitats in the Assessment Area.

Table 9.2       Species of Conservation Interests Recorded in the Assessment Area.

Table 9.3       Evaluation of Ecological Impacts on Marine Resources During Construction Phase

Table 9.4       Summary of Evaluation of Marine Ecological Impacts During Operation Phase.

Table 10.1      Relationship between Receptor Sensitivity and Impact Magnitude in Defining Impact Significance

Table 10.2      List of the Landscape Resources / Landscape Character Zones and their Sensitivity to Change

Table 10.3      Visual Sensitive Receivers (VSRs) and their Sensitivity to Change

Table 10.4      Significant Landscape Impacts of the Proposed Works During Construction Phase

Table 10.5      Proposed Construction Phase Landscape Mitigation Measures

Table 10.6      Proposed Operation Phase Landscape Mitigation Measures

Table 10.7      Significance of Landscape Impacts In the Construction and Operation Phases

Table 10.8      Significance of Visual Impacts in the Construction and Operation Phases (Note: All Impacts Adverse Unless Otherwise Noted.)

Table 12.1      Event and Action Plan for Landscape and Visual Impact – Construction Phase

Table 13.1      Implementation Schedule for Air Quality Control

Table 13.2      Implementation Schedule for Noise Control

Table 13.3      Implementation Schedule for Water Quality Control

Table 13.4      Implementation Schedule for Waste Management

Table 13.5      Implementation Schedule for Land Contamination

Table 13.6      Implementation Schedule for Marine Ecology

Table 13.7      Implementation Schedule for Landscape and Visual

Table 14.1      Summary of EIA Impacts and Recommendations for DP1

Table 14.2      Summary of Eia Impacts and Recommendations For DP2

Table 14.3      Summary of Eia Impacts and Recommendations For DP3

Table 14.4      Summary of Eia Impacts and Recommendations For DP4

Table 14.5      Summary of Eia Impacts and Recommendations For DP5

Table 14.6      Summary of Eia Impacts and Recommendations For DP6

Table 15.1      Summary of Environmental Impacts Associated with the Project

Table 15.2      Summary of Key Environmental Outcomes/ Benefits

 

 

LIST OF FIGURES

 

Figure 1.1              Wan Chai Development Phase II and Central-Wan Chai Bypass – Site Plan   

Figure 1.2              Designated Projects

Figure 1.2a            Designated Project 1 - Central-Wanchai Bypass (CWB) including its Road Tunnel and Slip Roads

Figure 1.2b            Designated Project 2 - Road P2 and Other Roads which are classified as Primary/District Distributor Roads

Figure 1.2c            Designated Project 3 - Reclamation works including associated Dredging Works

Figure 1.2d            Designated Project 4 - Temporary Typhoon Shelter

Figure 1.2e            Designated Project 5 - Wan Chai East Sewage Outfall

Figure 1.2f            Designated Project 6 - Dredging for the Cross-Harbour Water Mains from Wan Chai to Tsim Sha Tsui

Figure 1.3              General Layout of The CWB From Central to North Point

Figure 2.1              Trunk Road Tunnel Variation 1         

Figure 2.2              Trunk Road Tunnel Variation 2

Figure 2.3              Trunk Road Tunnel Variation 3

Figure 2.4              Trunk Road Flyover 

Figure 2.5              Concept Plan

Figure 2.5a            Recommended Outline Development Plan

Figure 2.6              Proposed Dredged Areas

Figure 2.7              Reclamation Stages

Figure 2.8              Construction Stages (Sheet 1 of 12)

Figure 2.9              Construction Stages (Sheet 2 of 12)

Figure 2.10            Construction Stages (Sheet 3 of 12)   

Figure 2.11            Construction Stages (Sheet 4 of 12)   

Figure 2.12            Construction Stages (Sheet 5 of 12)

Figure 2.13            Construction Stages (Sheet 6 of 12)

Figure 2.14            Construction Stages (Sheet 7 of 12)

Figure 2.15            Construction Stages (Sheet 8 of 12)

Figure 2.16            Construction Stages (Sheet 9 of 12)

Figure 2.17            Construction Stages (Sheet 10 of 12)

Figure 2.18            Construction Stages (Sheet 11 of 12)

Figure 2.19            Construction Stages (Sheet 12 of 12)

Figure 3.1              Study Area of Air Quality Assessment

Figure 3.2              Locations of Representative Air Sensitive Receivers (Causeway Bay & IECL section)

Figure 3.3              Locations of Representative Air Sensitive Receivers (Wan Chai section)

Figure 3.4              Locations of the Different Reclamation Sites

Figure 3.5              Locations of Portals and Ventilation Buildings Emissions

Figure 3.6a            Contours of Cumulative Maximum 1-Hour TSP Concentration in mgm-3 at 1.5m above ground (Causeway Bay & IECL Section) (Scenario 1)

Figure 3.6b            Contours of Cumulative Maximum 1-Hour TSP Concentration in mgm-3 at 1.5m above ground (Wan Chai section) (Scenario 1)

Figure 3.7a            Contours of Cumulative Maximum 1-Hour TSP Concentration in mgm-3 at 1.5m above ground (Causeway Bay & IECL Section) (Scenario 2)

Figure 3.7b            Contours of Cumulative Maximum 1-Hour TSP Concentration in mgm-3 at 1.5m above ground (Wan Chai section) (Scenario 2)

Figure 3.8a            Contours of Cumulative Maximum 1-Hour TSP Concentration in mgm-3 at 1.5m above ground (Causeway Bay & IECL Section) (Scenario 3)

Figure 3.8b            Contours of Cumulative Maximum 1-Hour TSP Concentration in mgm-3 at 1.5m above ground (Wan Chai section) (Scenario 3)

Figure 3.9a            Contours of Cumulative Maximum 1-Hour TSP Concentration in mgm-3 at 1.5m above ground (Causeway Bay & IECL Section) (Scenario 4)

Figure 3.9b            Contours of Cumulative Maximum 1-Hour TSP Concentration in mgm-3 at 1.5m above ground (Wan Chai section) (Scenario 4)

Figure 3.10a          Contours of Cumulative Maximum 1-Hour TSP Concentration in mgm-3 at 1.5m above ground (Causeway Bay & IECL Section) (Scenario 5)

Figure 3.10b          Contours of Cumulative Maximum 1-Hour TSP Concentration in mgm-3 at 1.5m above ground (Wan Chai section) (Scenario 5)

Figure 3.11a          Contours of Cumulative Maximum 1-Hour TSP Concentration in mgm-3 at 1.5m above ground (Causeway Bay & IECL Section) (Scenario 6)

Figure 3.11b          Contours of Cumulative Maximum 1-Hour TSP Concentration in mgm-3 at 1.5m above ground (Wan Chai section) (Scenario 6)

Figure 3.12a          Contours of Cumulative Maximum 24-Hour TSP Concentration in mgm-3 at 1.5m above ground (Causeway Bay & IECL Section) (Scenario 1)

Figure 3.12b          Contours of Cumulative Maximum 24-Hour TSP Concentration in mgm-3 at 1.5m above ground (Wan Chai section) (Scenario 1)

Figure 3.13a          Contours of Cumulative Maximum 24-Hour TSP Concentration in mgm-3 at 1.5m above ground (Causeway Bay & IECL Section) (Scenario 2)

Figure 3.13b          Contours of Cumulative Maximum 24-Hour TSP Concentration in mgm-3 at 1.5m above ground (Wan Chai section) (Scenario 2)

Figure 3.14a          Contours of Cumulative Maximum 24-Hour TSP Concentration in mgm-3 at 1.5m above ground (Causeway Bay & IECL Section) (Scenario 3)

Figure 3.14b          Contours of Cumulative Maximum 24-Hour TSP Concentration in mgm-3 at 1.5m above ground (Wan Chai section) (Scenario 3)

Figure 3.15a          Contours of Cumulative Maximum 24-Hour TSP Concentration in mgm-3 at 1.5m above ground (Causeway Bay & IECL Section) (Scenario 4)

Figure 3.15b          Contours of Cumulative Maximum 24-Hour TSP Concentration in mgm-3 at 1.5m above ground (Wan Chai section) (Scenario 4)

Figure 3.16a          Contours of Cumulative Maximum 24-Hour TSP Concentration in mgm-3 at 1.5m above ground (Causeway Bay & IECL Section) (Scenario 5)

Figure 3.16b          Contours of Cumulative Maximum 24-Hour TSP Concentration in mgm-3 at 1.5m above ground (Wan Chai section) (Scenario 5)

Figure 3.17a          Contours of Cumulative Maximum 24-Hour TSP Concentration in mgm-3 at 1.5m above ground (Causeway Bay & IECL Section) (Scenario 6)

Figure 3.17b          Contours of Cumulative Maximum 24-Hour TSP Concentration in mgm-3 at 1.5m above ground (Wan Chai section) (Scenario 6)

Figure 3.18            Contours of Cumulative Maximum 1-Hour Average NO2 Concentration in mgm-3 at 1.5m above ground

Figure 3.19            Contours of Cumulative Maximum 24-Hour Average NO2 Concentration in mgm-3 at 1.5m above ground

Figure 3.20            Contours of Cumulative Maximum 24-Hour Average RSP Concentration in mgm-3 at 1.5m above ground

Figure 3.21            Proposed Dredging Area for Mitigation of Odour

Figure 4.1              Extent of ‘New’ Roads under the Project (Sheet 1 of 6)

Figure 4.2              Extent of ‘New’ Roads under the Project (Sheet 2 of 6)

Figure 4.3              Extent of ‘New’ Roads under the Project (Sheet 3 of 6)

Figure 4.4              Extent of ‘New’ Roads under the Project (Sheet 4 of 6)

Figure 4.5              Extent of ‘New’ Roads under the Project (Sheet 5 of 6)

Figure 4.6              Extent of ‘New’ Roads under the Project (Sheet 6 of 6)

Figure 4.7              Locations of Representative Noise Sensitive Receivers

Figure 4.8              Extent of Low Noise Road Surface on Existing Island Eastern Corridor within Study Area

Figure 4.9              Location of Temporary Noise Barriers During Construction Phase (NPR2W, NPR1 & NPR2E)

Figure 4.9a            Location of Temporary Noise Barriers During Demolition of Existing Piers and Crossheads in Marine Section of IEC

Figure 4.10            Corresponding Noise Impact Section in Demolition Works along IEC

Figure 4.10a          Corresponding Noise Impact Section in Construction of Superstructure along IEC

Figure 4.11            Locations of Direct Noise Mitigation Measures

Figure 4.12            Section of Direct Noise Mitigation Measures (Sheet 1 of 3)

Figure 4.13            Section of Direct Noise Mitigation Measures (Sheet 2 of 3)

Figure 4.14            Section of Direct Noise Mitigation Measures (Sheet 3 of 3)

Figure 4.15            Indicative Layout of Re-provisioned Tin Hau Temple

Figure 5.1              Locations of Water Quality Sensitive Receivers (Sheet 1 of 2)

Figure 5.2              Locations of Water Quality Sensitive Receivers (Sheet 2 of 2)

Figure 5.3A           Locations of Cooling Water Discharges

Figure 5.3B           Locations of Existing Stormwater Outfalls

Figure 5.4              (Not In Use)

Figure 5.5              Temporary Typhoon Shelter

Figure 5.6              Details of Temporary Breakwater and Piled Wave Wall

Figure 5.7              Construction Phase Modelling Scenario 2A (Sheet 1 of 2)

Figure 5.7a            Construction Phase Modelling Scenario 2A (Sheet 2 of 2)

Figure 5.8              Construction Phase Modelling Scenario 2B

Figure 5.9              Construction Phase Modelling Scenario 2C

Figure 5.10            Temporary Embayment under Construction Scenario 3B

Figure 5.11            Temporary Embayment under Construction Scenario 3C

Figure 5.12            Coastline Configuration for 2011

Figure 5.13            Coastline Configuration for 2016

Figure 5.14a          Locations of Monitoring Stations and Cross Sections

Figure 5.15            Typical Configuration of Silt Curtains and Screens

Figure 6.1              Marine Sediment Sampling Locations

Figure 7.1              Potential Contaminative Land Uses within Study Area

Figure 7.2              Site Layout, Locations of Potential Hotspots and Proposed Sampling Location for A King Marine

Figure 7.3              Estimated Extent of Soil Contamination

Figure 8.1              Proposed Sewerage Works (Sheet 1 of 3)

Figure 8.2              Proposed Sewerage Works (Sheet 2 of 3)

Figure 8.3              Proposed Sewerage Works (Sheet 3 of 3)

Figure 9.1              Marine Ecological Environment and Species of Conservation Interest Identified with the Assessment Area

Figure 9.2              Proposed Coral Recipient Site in Junk Bay

Figure 10.1            Landscape and Visual Impact Study Area

Figure 10.1.1         Review of Planning framework Plan (Sheet 1 of 3)

Figure 10.1.2         Review of Planning framework Plan (Sheet 2 of 3)

Figure 10.1.3         Review of Planning framework Plan (Sheet 3 of 3)

Figure 10.2            Baseline Landscape Resources during Construction

Figure 10.2A         Baseline Landscape Resources during Operation

Figure 10.2.1         Baseline Landscape Resources Photos (Sheet 1 of 6)

Figure 10.2.2            Baseline Landscape Resources Photos (Sheet 2 of 6)                                                                             

Figure 10.2.3            Baseline Landscape Resources Photos (Sheet 3 of 6)                                                                             

Figure 10.2.4            Baseline Landscape Resources Photos (Sheet 4 of 6)                                                                             

Figure 10.2.5            Baseline Landscape Resources Photos (Sheet 5 of 6)                                                                             

Figure 10.2.6            Baseline Landscape Resources Photos (Sheet 6 of 6)                                                                             

Figure 10.3              Baseline Landscape Character Areas during Construction

Figure 10.3A            Baseline Landscape Character Areas during Operation                                                                          

Figure 10.4              Key VSRs and Primary Zone of Visual Influence during Construction

Figure 10.4A            Key VSRs and Primary Zone of Visual Influence during Operation

Figure 10.4B            Key VSRs and Secondary Zone of Visual Influence                                                                               

Figure 10.4.1            VSRs Photos (Sheet 1 of 10)                                                                                                                

Figure 10.4.2            VSRs Photos (Sheet 2 of 10)                                                                                                                

Figure 10.4.3            VSRs Photos (Sheet 3 of 10)                                                                                                                

Figure 10.4.4            VSRs Photos (Sheet 4 of 10)                                                                                                                

Figure 10.4.5            VSRs Photos (Sheet 5 of 10)                                                                                                                

Figure 10.4.6            VSRs Photos (Sheet 6 of 10)                                                                                                                

Figure 10.4.7            VSRs Photos (Sheet 7 of 10)                                                                                                                

Figure 10.4.8            VSRs Photos (Sheet 8 of 10)                                                                                                                

Figure 10.4.9            VSRs Photos (Sheet 9 of 10)                                                                                                                

Figure 10.4.10          VSRs Photos (Sheet 10 of 10)

Figure 10.5              Landscape Master Plan

Figure 10.5A            Proposed Landscape Mitigation Measures                                                                                             

Figure 10.5.1            Section (Sheet 1 of 5)

Figure 10.5.2            Section (Sheet 2 of 5)

Figure 10.5.3            Section (Sheet 3 of 5)

Figure 10.5.4            Section (Sheet 4 of 5)

Figure 10.5.5            Section (Sheet 5 of 5)                                                                                                                           

Figure 10.6.1            Residual Impacts on Landscape Resources during Construction                                                              

Figure 10.6.2            Residual Impacts on Landscape Character Areas during Construction

Figure 10.6.3            Residual Impacts on Landscape Resources during Operation                                                                  

Figure 10.6.4            Residual Impacts on Landscape Character Areas during Operation                                                         

Figure 10.6.5            Residual Visual Impacts within Primary ZVI during Construction                                                            

Figure 10.6.6            Residual Visual Impacts within Secondary ZVI during Construction                                                         

Figure 10.6.7            Residual Visual Impacts within Primary ZVI during Operation                                                                

Figure 10.6.8            Residual Visual Impacts within Secondary ZVI during Operation                                                             

Figure 10.7              Key Plan for Photomontage Viewpoint

Figure 10.7A            Key Plan for Photomontage Viewpoint from the Hinterland

Figure 10.7.1            Viewpoint No. 1 Photomontage (Sheet 1 of 2)

Figure 10.7.2            Viewpoint No. 1 Photomontage (Sheet 2 of 2)

Figure 10.7.3            Viewpoint No. 2 Photomontage

Figure 10.7.4            Viewpoint No. 3 Photomontage

Figure 10.7.5            Viewpoint No. 4 Photomontage

Figure 10.7.6            Viewpoint No. 5 Photomontage

Figure 10.7.7            Viewpoint No. 6 Photomontage

Figure 10.7.7a          Viewpoint No. 6a Photomontage

Figure 10.7.8            Viewpoint No. 7 Photomontage

Figure 10.7.9            Viewpoint No. 8 Photomontage

Figure 10.7.10          Viewpoint No. 9 Photomontage

Figure 10.7.11          Viewpoint No. 10 Photomontage

Figure 10.7.12          Viewpoint No. 11 Photomontage

Figure 10.7.13          Viewpoint No. 12 Photomontage

Figure 10.7.14          Illustrations showing Views within the Proposed Open Spaces

 

LIST OF APPENDICIES

 

Appendix 2.1           Comparison Table

Appendix 2.2           Implementation Schedule of the Proposed Mitigation Measures for CWB within CRI and CRIII

Appendix 2.3           (Not used)

Appendix 2.4           Discussion Paper: Slip Road 8 Alignment Options

Appendix 2.5           Construction Programme

Appendix 3.1           Calculation of Dust Emission

Appendix 3.2           Year 2031 Traffic Flow Forecast

Appendix 3.3           Classification of Road Type

Appendix 3.4           2016 Vehicle Population

Appendix 3.5           Adopted Daily Trips and Vehicle-Mile-Travelled (VMT) in Year 2031

Appendix 3.6           Summary Results of Comparing the Total Emission by Using Peak Hour Flow Speed and Design Road Speed

Appendix 3.7           Summary Results of Comparing the Total Emission from Year 2016 to 2031

Appendix 3.8           Calculation of Vehicle Emission Factors

Appendix 3.9           Calculation of Emission Factor in Year 2031 (Open Road)

Appendix 3.10         Calculation of Emission Factor in Year 2031 (Portal & Ventilation Building)

Appendix 3.11         Caline4 Road Plot and ISC3 Portal Location

Appendix 3.12         In-tunnel Air Quality Assessment

Appendix 3.13         Details of Odour Survey

Appendix 3.14         Locations of Potential Odour Emission Source and Odour Contour Plots

Appendix 3.15         Tunnel Ventilation Schematic Diagram

Appendix 4.1           Projected Traffic Data With and Without the Project in Year 2031

Appendix 4.2           Projected Traffic Data for Year 2008

Appendix 4.3           Prevailing Traffic Noise Levels at Representative Noise Sensitive Receivers in Year 2008

Appendix 4.4           Photographs of Representative Noise Sensitive Receivers

Appendix 4.5           Powered Mechanical Equipment (PME) for the Different Construction Tasks during Normal Daytime Working Hours (Without Mitigation Measures)

Appendix 4.6           Powered Mechanical Equipment (PME) for CRIII Project (With Mitigation Measures)

Appendix 4.7           Calculations and Results of Construction Noise Impacts During Normal Daytime Working Hours (Without Mitigation Measures)

Appendix 4.8           Predicted Road Traffic Noise Levels at Representative Noise Sensitive Receivers in Year 2031 (Unmitigated Scenario)

Appendix 4.9           Sample Output File for Road Traffic Noise Model

Appendix 4.9a         Road-Plot of Road Traffic Noise Model

Appendix 4.10         Ventilation Noise Assessment

Appendix 4.11         (Not used)

Appendix 4.12         Helicopter Noise Assessment

Appendix 4.13         Powered Mechanical Equipment (PME) for the Different Construction Tasks during Normal Daytime Working Hours (With Mitigation Measures)

Appendix 4.14         Calculations and Results of Construction Noise Impacts During Normal Daytime Working Hours (With Mitigation Measures)

Appendix 4.15         Predicted Road Traffic Noise Levels at Representative Noise Sensitive Receivers in Year 2031 (Mitigated Scenario – With Proposed Direct Noise Mitigation Measures for Existing NSRs Only)

Appendix 4.16         Predicted Road Traffic Noise Levels at Representative Noise Sensitive Receivers in Year 2031 (Mitigated Scenario – With All Proposed Direct Noise Mitigation Measures)

Appendix 4.17         Number of Residential Dwellings and Classrooms Protected By and Benefited From Noise Mitigation Measures 

Appendix 4.18         Eligibility Assessment for Indirect Technical Remedies

Appendix 4.19         Powered Mechanical Equipment (PME) for the Different Construction Tasks during Restricted Hours (Without Mitigation Measures)

Appendix 4.20         Calculations and Results of Construction Noise Impacts During Restricted Hours (Without Mitigation Measures)

Appendix 4.21         Powered Mechanical Equipment (PME) for the Different Construction Tasks during Restricted Hours (With Mitigation Measures)

Appendix 4.22         Calculations and Results of Construction Noise Impacts During Restricted Hours (With Mitigation Measures)

Appendix 5.1           Refined Model Grid Layout

Appendix 5.1a         Derivation of Heat Re-circulation Factor

Appendix 5.1b         Pile Layout for East Bridge, West Bridge and Seafront Promenade

Appendix 5.2           Mathematical Expressions for Pile Friction

Appendix 5.3           Pollution Loading Inventory

Appendix 5.4a         Surface Flow Pattern – Dry Season

Appendix 5.4b         Surface Flow Pattern – Wet Season

Appendix 5.4c         Depth-averaged Flow Speed – Dry Season

Appendix 5.4d         Depth-averaged Flow Speed – Wet Season

Appendix 5.5           Operational Phase Water Quality Modelling Results – Annual Simulations

Appendix 5.6           Predicted Water Quality at Sensitive Receivers in 2016

Appendix 5.7a         Surface Water Temperature Elevation – Dry Season Spring Tide

Appendix 5.7b         Surface Water Temperature Elevation – Dry Season Neap Tide

Appendix 5.7c         Surface Water Temperature Elevation – Wet Season Spring Tide

Appendix 5.7d         Surface Water Temperature Elevation – Wet Season Neap Tide

Appendix 5.8           Tidal and Depth Averaged Residual Chlorine Concentration – Dry and Wet Seasons

Appendix 5.9a         Construction Phase Sediment Plume Modelling Results - Scenario 2A - Dry Season

Appendix 5.9b         Construction Phase Sediment Plume Modelling Results - Scenario 2A - Wet Season

Appendix 5.9c         Construction Phase Sediment Plume Modelling Results - Scenario 2B - Dry Season

Appendix 5.9d         Construction Phase Sediment Plume Modelling Results - Scenario 2B - Wet Season

Appendix 5.9e         Construction Phase Sediment Plume Modelling Results - Scenario 2C- Dry Season

Appendix 5.9f         Construction Phase Sediment Plume Modelling Results - Scenario 2C - Wet Season

Appendix 5.9g         Construction Phase Sediment Plume Modelling Results - Sensitivity Test - Dry Season

Appendix 5.9h         Construction Phase Sediment Plume Modelling Results - Sensitivity Test - Wet Season

Appendix 5.10a       Construction Phase Water Quality Modelling Results - Scenario 3B - Dry Season

Appendix 5.10b       Construction Phase Water Quality Modelling Results - Scenario 3B - Wet Season

Appendix 5.10c       Construction Phase Water Quality Modelling Results - Scenario 3C - Dry Season

Appendix 5.10d       Construction Phase Water Quality Modelling Results - Scenario 3C - Wet Season

Appendix 5.10e       Maximum Mixing Zone for Contaminated Release – Scenario 2A

Appendix 5.10f        Maximum Mixing Zone for Contaminated Release – Scenario 2B

Appendix 5.10g       Maximum Mixing Zone for Contaminated Release – Scenario 2C

Appendix 6.1           Results of Sediment Quality Analysis

Appendix 6.2           Field Trials of Geoynthetic Containers ACE Report (to be endorsed by ACE)

Appendix 7.1           Contamination Assessment Plan for A King Marine

Appendix 7.2           Contamination Assessment Report / Remediation Action Plan for A King Marine

Appendix 9.1           Spot-check Reconnaissance Dives and Rapid Ecological Assessment Survey 

Appendix 9.2           Intertidal Communities Survey

Appendix 9.3           Photographs of Different Marine Environments in the Assessment Area

Appendix 9.4           Photographs of Different Marine Habitats in the Assessment Area

Appendix 9.5           Intertidal Faunal Species Recorded in Different Habitats of the Assessment Area

Appendix 9.6           Avifaunal Species and Relative Abundance Recorded in the Assessment Area

Appendix 10.1         Alternative Options for East Ventilation Building and its associated Vent Shaft and Central Ventilation Building

Appendix 10.2         Illustrations of the Landscaped Deck extending Victoria Park to the Waterfront

Appendix 10.3         Affected Trees in Victoria Park

Appendix 10.4         Nine New Pedestrian Linkages to the Waterfront

Appendix 11.1         Marine Archaeological Investigation

Appendix 15.1         Key Assessment Assumptions and Methodologies

 

 

volume 2 road works

Part A  -     Schedule 2 DP1 :  Central-Wanchai Bypass (CWB) including its road tunnel and slip roads

Part B  -     Schedule 2 DP2 :  Road P2 and other roads which are classified as primary/district distributor roads

 

 

volume 3 – marine works

Part C  -     Schedule 2 DP3 :  Reclamation works including associated dredging works

Part D  -     Schedule 2 DP4 :  Temporary typhoon shelter

Part E  -     Schedule 2 DP5 :  Wan Chai East Sewage Outfall

Part F  -     Schedule 2 DP6 :  Dredging for the Cross-harbour Water Mains from Wan Chai to Tsim Sha Tsui

 

volume 4 – figures

 

volume 5 – appendices (1 of 2)

 

volume 6 – appendices (2 of 2)