AGREEMENT NO. CE 4/99

LEI YUE MUN ROAD UNDERPASS, MODIFICATION AT JUNCTIONWITH YAU TONG ROAD AND ASSOCIATED IMPROVEMENT WORKS

 FEASIBILITY STUDY

FINAL ENVIRONMENTAL IMPACT ASSESSMENT REPORT

TABLE OF CONTENTS

1.
 INTRODUCTION
2.
 DESCRIPTION OF THE PROJECT
3.
 NOISE IMPACT ASSESSMENT
4.
 AIR QUALITY IMPACT ASSESSMENT
5.
 LANDFILL GAS HAZARD ASSESSMENT
6.
 WATER QUALITY IMPACT ASSESSMENT
6A.
 WASTE MANAGEMENT IMPLICATIONS
7.
 LANDSCAPE AND VISUAL IMPACT ASSESSMENT
7A.
 ENVIRONMENTAL MONITORING AND AUDIT
8.
 CONCLUSION

FIGURES

Figure 1.1 Site Location Plan
Figure 2.1 General Layout Plan
Figure 2.2 Limit of Environmental Impact Assessment Study Area
Figure 2.3  Site Constraints - Plan
Figure 2.4 Site Constraints - Sectional Elevation
Figure 2.5  Option 1
Figure 2.6  Option 2
Figure 2.7  Option 3
Figure 2.8  Option 4 - Plan
Figure 2.9  Option 4 - Section
Figure 3.1 Identified Noise Sensitive Areas
Figure 3.2  Locations of Representative Noise Sensitive Receivers
Figure 3.3 2004 Peak Hour Forecast Traffic Flows
Figure 3.4 2022 Peak Hour Forecast Traffic Flows
Figure 3.5 Locations of Proposed Noise Mitigation Measures
Figure 3.6 Typical Cross-section of Noise Canopy
Figure 3.7  Typical Cross-section of Noise Semi-enclosure
Figure 3.8 Typical Cross-section of Cantilevered Noise Barrier
Figure 3.9 Typical Section for St. Antonius Primary School
Figure 3.10 Proposed Noise Monitoring Locations during Construction Phase
Figure 3.11 Proposed Noise Monitoring Locations during Operation Phase
Figure 3.12 Not Used
Figure 3.13 Suggested Temporary Noise Barrier at SKH Kei Hau Secondary School
Figure 3.14 Suggested Temporary Noise Barrier for St. Antonius Primary School
Figure 4.1 Locations of Representative Air Sensitive Receivers during Construction and Operation Phases
Figure 4.2 2007 AM Peak Hour Forecast Traffic Flows
Figure 4.3 Contours of Hourly Average Total Suspended Particulate Concentrations in μgm-3 at 1.5m Above Ground (Unmitigated)
Figure 4.4 Contours of 24 Hour Average Total Suspended Particulate Concentrations μgm-3 at 1.5m Above Ground (Unmitigated)
Figure 4.5 Contours of Hourly Average Total Suspended Particulate Concentrations in μgm-3 at 1.5m Above Ground (Mitigated)
Figure 4.6 Contours of 24 Hour Average Total Suspended Particulate Concentrations in μgm-3 at 1.5m Above Ground (Mitigated)
Figure 4.7 Contours of Hourly Average Nitrogen Dioxide Concentrations in μgm-3 at 1.5m Above Ground (Without Proposed Noise Barriers)
Figure 4.8  Contours of 24 Hour Average Nitrogen Dioxide Concentrations in μgm-3 at 1.5m Above Ground (Without Proposed Noise Barriers)
Figure 4.9 Contours of 24 Hour Average Respirable Suspended Particulate Concentrations in μgm-3 at 1.5m Above Ground (Without Proposed Noise Barriers)
Figure 4.10 Contours of Hourly Average Nitrogen Dioxide Concentrations in μgm-3 at 1.5m Above Ground (With Proposed Noise Barriers)
Figure 4.11 Contours of 24 Hour Average Nitrogen Dioxide Concentrations in μgm-3 at 1.5m Above Ground (With Proposed Noise Barriers)
Figure 4.12 Contours of 24 Hour Average Respirable Suspended Particulate Concentrations in μgm-3 at 1.5m Above Ground (With Proposed Noise Barriers)
Figure 4.13 Proposed Air Quality Monitoring Location
Figure 5.1 Locations of Sai Tso Wan Landfill and Part of Project Site
Figure 5.2 Geology of Sai Tso Wan Landfill and Surrounding Areas
Figure 5.3 Plan of Geological Cross-section Between Sai Tso Wan Landfill and Concerned Area of Project Site
Figure 5.4 Geological Cross-section Between Sai Tso Wan Landfill and Concerned Area of Project Site
Figure 5.5 Locations of Gas Monitoring Probes and Groundwater Monitoring Wells at Sai Tso Wan Landfill
Figure 5.6 Locations of Off-Site Gas Vents for Sai Tso Wan Landfill
Figure 5.7 Locations of Off-Site Building Monitoring Points for Sai Tso Wan Landfill.
Figure 5.8 Utilities Layout
Figure 7.1 Landscape Designations 
Figure 7.2 Views of the Study Area Landscape (Sheet 1 of 2)
Figure 7.3 Views of the Study Area Landscape (Sheet 2 of 2)
Figure 7.4 Landscape Resources 
Figure 7.5 Key Views and Visually Sensitive Receivers 
Figure 7.6 Views of the Study Area 
Figure 7.7 Views of the Study Area
Figure 7.8 Potential Visual Envelope
Figure 7.9 Landscape Master Plan (Mitigation Measures)
Figure 7.10A Noise Barrier Layout and Mitigation Landscape Plan
Figure 7.10B Noise Barrier - Section A-A
Figure 7.10C Noise Barrier - Section B-B
Figure 7.10D Noise Barrier - Section C-C
Figure 7.10E Noise Barrier - Section D-D
Figure 7.11 Footbridge - Plan and Elevation
Figure 7.12 Proposed Footbridge Photomontage Image
Figure 7.13  Proposed Noise Barrier Photomontage Image

APPENDICES

Appendix 2.1  Preliminary Construction Programme
Appendix 3.1 Prevailing Traffic Noise Levels
Appendix 3.2 'New' Road Definition
Appendix 3.2 A Assessment of Reverberation Effect
Appendix 3.3 Likely Powered Mechanical Equipment for Various Construction Activities
Appendix 3.4 Total Sound Powered Levels for Various Construction Activities with the Use of Quiet PME 
Appendix 3.5 Total Sound Powered Levels for Various Construction Activities with the Use of Quiet PME and Movable Noise Barriers
Appendix 3.6 Breakdown of Noise Contribution (Unmitigated)
Appendix 3.7  Breakdown of Noise Contribution (Mitigated)
Appendix 3.8  Assessment of Noise Sensitive Receivers Eligible for Indirect Technical Remedies
Appendix 4.1 Calculations of Dust Emission Factors
Appendix 4.2 Sample Computer Outputs of FDM Calculations
Appendix 4.3 A Comparison of Combined Effects of Traffic Flow and Emission Factors for Years 2007 and 2022
Appendix 4.4a Calculations of Emission Factors (Open Road) - 2007
Appendix 4.4b Calculations of Emission Factors (Portal) - 2007
Appendix 4.5 Sample Computer Outputs of CALINE4 Calculations
Appendix 4.6a Detailed Calculation of In-Tunnel Air Quality for the Long Section of the Underpass
Appendix 4.6b  Detailed Calculation of In-Tunnel Air Quality for the Short Section of the Underpass
Appendix 4.7 Sample Computer Outputs of CALINE4 Calculations for the Assessment Points near the Underpass
Appendix 4.8  Calculations of NO2 Concentration Inside the Semi-Enclosure in front of St. Antouius Girl's College
Appendix 5.1 Landfill Gas Monitoring Data
Appendix 5.2 Leachate Level Monitoring Data
Appendix 5.3 Groundwater Quality Monitoring Data
Appendix 5.4 Off-site LFG Migration Monitoring Data

 ENVIRONMENTAL MONITORING AND AUDIT MANUAL