Volume 1 of 2

 

1.         INTRODUCTION

1.1       Background. 1-1

1.2       The Assignment 1-1

1.3       Purpose and Objectives of this EIA Study. 1-1

1.4       Approach to EIA Study. 1-2

1.5       EIA Study Scope. 1-3

1.6       Structure of this Report 1-4

 

2.         CONSIDERATIONS OF ALTERNATIVE SCHEMES

2.1       Introduction. 2-1

2.2       Project Need. 2-1

2.3       “Without Project” Alternative2-1

2.4       Alternative Options. 2-1

2.5       Preferred Option. 2-7

 

3.         PROJECT DESCRIPTION

3.1       Description of the Site Area

3.2       Design of the Workshop

3.3       Construction Methodology

3.4       Project Implementation Programme

3.5       Concurrent Projects

3.6       Identification of Key Environmental Issues

 

4.         NOISE IMPACT ASSESSMENT

4.1       Introduction

4.2       Environmental Legislation, Standards and Guidelines

4.3       Noise Sensitive Receivers.

4.4       Baseline Conditions. 4-6

4.5       Identification of Potential Noise Impacts

4.6       Concurrent Projects

4.7       Assessment Approach

 

4.8       Construction Noise Assessment

4.9       Operational Noise Assessment

4.10    Residual Impacts

4.11    Environmental Monitoring and Audit

4.12    Conclusion

 

5          AIR QUALITY IMPACT ASSESSMENT

5.1       Introduction

5.2       EIA Study Brief

5.3       Environmental Legislation and Guidelines

5.4       Existing Environment

5.5       Identification of Air Sensitive Receivers

5.6       Identification of Potential Air Quality Impacts

5.7       Concurrent Projects

5.8       Construction Phase Assessment Methodology

5.9       Operational Phase Assessment Methodology

5.10    Construction Dust Impact Assessment

5.11    Operational Air Quality Assessment

5.12    Residual Impacts

5.13    Environmental Monitoring and Audit

5.14    Conclusion

 

6.         WATER QUALITY IMPACT ASSESSMENT

6.1       Introduction

6.2       Environmental Legislation and Standards

6.3       Existing Water Quality. 6-3

6.4       Water Sensitive Receivers. 6-4

6.5       Assessment Methodology

6.6       Construction Phase Impact Assessment

6.7       Operational Phase Impact Assessment

 

6.8       Residual Impacts

6.9       Environmental Monitoring and Audit

6.10    Conclusion

 

7.         WASTE MANAGEMENT IMPLICATION AND LAND CONTAMINATION

7.1       Introduction

7.2       Environmental Legislation and Standards

7.3       Waste Management 7-4

7.4       Land Contamination. 7-12

7.5       7.5       Residual Impacts

7.6       Environmental Monitoring and Audit

7.7       Conclusion

 

 

8.         LANDSCAPE AND VISUAL IMPACT ASSESSMENT

8.1       Introduction

8.2       Legislation, Standards and Guidelines

8.3       Assessment Methodology

8.4       Review of Planning and Development Control Framework

8.5       Landscape and Visual Baseline Study

8.6       Landscape and Visual Impact Assessment

8.7       Landscape and Visual Mitigation Measures

8.8       Residual Impacts

8.9       Environmental Monitoring and Audit

8.10    Conclusion

 

9.         SUMMARY OF ENVIRONMENTAL OUTCOMES

9.1       9.1       Introduction

 

10.       ENVIRONMENTAL MONITORING AND AUDIT

10.1    10.1    Introduction

10.2    EM&A Requirements

10.3    Noise

10.4    10.4    Air Quality

10.5    Water Quality

10.6    Waste Management and Land Contamination

10.7    Landscape and Visual Impact Assessment

 

11.       CONCLUSIONS

11.1    11.1    Introduction

11.2    Noise Impact

11.3    Air Quality Impact

11.4    11.4    Water Quality Impact

11.5    Waste Management Implication and Land Contamination

11.6    Landscape and Visual Impacts

 

12.       IMPLEMENTATION SCHEDULE AND RECOMMENDED MITIGATION MEASURES

12.1    12.1    Introduction

 

 

TABLES

Table 2.1                 Comparison of Servicing Capacity Design Options

Table 2.2                 Potential Environmental Benefits and Dis-benefits of Servicing Capacity Design Options

Table 2.3                 Comparison of Building Design Options

Table 2.4                 Potential Environmental Benefits and Dis-benefits of Building Design Options

Table 2.5                 Comparison of Local Exhaust Options

Table 2.6                 Potential Environmental Benefits and Dis-benefits of Local Exhaust Design Options

Table 2.7                 Potential Environmental Benefits and Dis-benefits of Construction Methodology Options

Table 3.1                 List of Potential Concurrent Projects

Table 3.2                 Summary of Works Items and Environmental Issues

Table 4.1                 Daytime Construction Noise Limits

Table 4.2                 Construction Noise Criteria for Activities other than Percussive Piling

Table 4.3                 Area Sensitivity Ratings of NSRs

Table 4.4                 Acceptable Noise Level during Operational Phase

Table 4.5                 Road Traffic Noise Planning Criteria

Table 4.6                 Representative Noise Sensitive Receivers

Table 4.7                 PME Identified as Major Noise Sources

Table 4.8                 Predicted Unmitigated Construction Noise Levels for Representative NSRs

Table 4.9                 Mitigated Quiet PME

Table 4.10               Mitigation measures Adopted for PME for Construction Works

Table 4.11               Predicted Mitigated Construction Noise Levels for Representative NSRs

Table 4.12               Operational Noise Levels for Representative NSRs

Table 4.13               Operational Noise Levels for NSR8

Table 4.14               Predicted Cumulative Operational Noise Levels for Representative NSRs

Table 5.1                 Hong Kong Air Quality Objectives

Table 5.2                 EPD Air Quality Monitoring Data at Kwun Tong AQMS (2006 to 2010)

Table 5.3                 Representative Air Sensitive Receivers

Table 5.4                 Concurrent Projects with Respect to Air Quality

Table 5.5                 Potential Emission Sources of Concurrent Projects during Operational Phase of the Project

Table 5.6                 Annual Average Concentrations of Pollutants at EPD’s AQMS (Kwun Tong)

Table 5.7                 Vehicle Classification in EMFAC-HK

Table 5.8                 Road Groupings

Table 5.9                 Calculated Emission Rates of NOx and RSP for the Project

Table 5.10               Comparison of Emission Inventory

Table 5.11               Predicted Maximum Overall 1-Hour, 24-hour and Annual Average of NO2 and RSP Concentrations (mg/m3) at ASRs (including Background levels)

Table 6.1                 Summary of WQOs for Eastern Buffer WCZ

Table 6.2                 WSD Standards at Flushing Water Intakes

Table 6.3                 Marine Water Quality for Eastern Buffer WCZ in 2010 at EM1, EM2, EM3, ET1 and ET2

Table 6.4                 Water Sensitive Receivers within Eastern Buffer WCZ

Table 6.5                Recommended Unit Flow Factor

Table 6.6                Estimated ADWF (in accordance with GESF)

Table 6.7                Recommended Peaking Factors for Sewers and Sewerage Facilities

Table 7.1                 Summary of C&D Materials Arising from the Project

Table 7.2                 Recommended Waste Disposal Sites

Table 8.1                Matrix of Significance of Landscape and Visual Impact

Table 8.2                 Tree Species Composition within Survey Area

Table 8.3                 Summary of Proposed Action for Surveyed Trees in Tree Survey Area

Table 8.4                 Identified VSRs and Their Sensitivity to Change

Table 8.5                 Magnitude of Change for LRs and LCAs and Significance of Landscape Impacts during Construction and Operational Phases

Table 8.6                 Magnitude of Change for Identified VSRs and Significance of Visual Impacts during Construction and Operational Phases

Table 9.1                 Summary of Key Environmental Outcomes

Table 10.1               Summary of EM&A Requirements

Table 12.1               Implementation Schedule for Environmental Mitigation Measures

 

 

Volume 2 of 2

 

FIGURES

Figure 1.1               Site Location of EMSD Workshop in Chai Wan

Figure 3.1               Ground Floor Layout Plan of the Preliminary Design

Figure 3.2               Roof Layout Plan of the Preliminary Design

Figure 3.3               Elevation of the Preliminary Design

Figure 3.4               Sandwich Roof Cover Typical Section

Figure 4.1               Noise Sensitive Receivers Identified within 300m of the Project

Figure 4.2               Locations of the Bus Depots

Figure 4.3               Locations of Notional Sources for Construction Phase

Figure 4.4               Locations of Notional Sources for Operational Phase

Figure 4.5               Schematic of Noise Mitigation for Speedometer Calibrator for NSR 8

Figure 5.1               Locations of Representative Air Sensitive Receivers

Figure 5.2               Road Network

Figure 5.3               Road Groupings

Figure 5.4               Overall Cumulative 1-hour NO2 Concentration at 1.5m above Ground Level

Figure 5.5               Overall Cumulative 24-hour NO2 Concentration at 1.5m above Ground Level

Figure 5.6               Overall Cumulative Annual NO2 Concentration at 1.5m above Ground Level

Figure 5.7               Overall Cumulative 24-hour RSP Concentration at 1.5m above Ground Level

Figure 5.8               Overall Cumulative Annual RSP Concentration at 1.5m above Ground Level

Figure 6.1               Water Sensitive Receivers within Eastern Buffer WCZ

Figure 6.2               Proposed Preliminary Design Drainage and Sewerage layout Plan

Figure 8.1               Site Location and Environs

Figure 8.2               Review of Planning and Control Development Framework

Figure 8.3              Baseline Landscape Resources

Figure 8.4               Landscape Character Areas (LCAs)

Figure 8.5               Tree Recommendation Plan

Figure 8.6               Visual Envelope (VE)

Figure 8.7               Visual Sensitive Receivers (VSRs) and Vantage Points (VPs)

Figure 8.8               Photomontages

Figure 8.9               Compensatory Planting Location

Figure 8.10             Preliminary Compensatory Planting Plan

 

APPENDICES

Appendix 3.1          Construction Programme

Appendix 4.1          Details of NSRs Selected for Noise Assessment (Construction and Operational Airborne Noise)

Appendix 4.2          Brochures for the Equipment Employed within the Workshop

Appendix 4.3          Construction Activities and Plant Inventory for Construction of EMSD Hong Kong Workshop - Unmitigated Scenario

Appendix 4.4          Construction Schedule with Air-borne Noise Assessment - Unmitigated Scenario

Appendix 4.5          Construction Activities and Plant Inventory for Construction of EMSD Hong Kong Workshop - Mitigated Scenario

Appendix 4.6          Construction Schedule with Air-borne Noise Assessment - Mitigated Scenario

Appendix 4.7          Operation Air-borne Noise Assessment – Unmitigated Scenario

Appendix 4.8          Operation Air-borne Noise Assessment – Mitigated Scenario

Appendix 5.1          Location Plan for EIA Traffic Forecast and Traffic Data

Appendix 5.2          Vehicle Class Details

Appendix 5.3          Implementation Schedule of Vehicle Emission Standards in Hong Kong

Appendix 5.4          Details of Adjustments on Exhaust Technology Fractions in Each Vehicle Class

Appendix 5.5          Vehicle Population

Appendix 5.6          Trips per Vehicle-Mile-Travelled (VMT)

Appendix 5.7          Hourly Temperature and Relative Humidity Profile for the Modelling of EMFAC-HK

Appendix 5.8          Hourly Speed Profiles and Trips per Vehicle-Mile-Travelled (VMT)

Appendix 5.9          Information of the Emission Rates for the Project

Appendix 5.10        Information of the Emission Rates for Bus Depots

Appendix 5.11        Sensitivity Test of Assessment Year

Appendix 5.12        Emission Factors and Composite Emission Factors for NOx and RSP in Year 2014

Appendix 6.1          Hydraulic Assessment for the Existing Sewerage Systems

Appendix 7.1          Information on the Present Activities and Past Land Use History for Possible Land Contamination

Appendix 8.1          Tree Assessment Schedule