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Quotation Ref No.
Hy(S)Q/026/2006
Widening of
Environmental Impact
Assessment
ENVIRONMENTAL IMPACT
ASSESSMENT REPORT
Table of Contents
1.1...... Project Background
1.2...... Objectives and Scope of the EIA
Study
1.3...... Assessment Area
1.4...... Structure of Report
2.1...... Site Location and Scope of the Project
2.2...... Need of the Project
2.3...... Consideration of Different
Alignment Options and Built-forms
2.4...... Consideration of Alternative
Construction Methods
2.5...... Selection of Preferred Option
2.6...... Works Programme
2.7...... Concurrent Projects
3.1...... Introduction
3.2...... Environmental Legislation,
Policies, Plans, Standards and Criteria
3.3...... Description of the Environment
3.4...... Air Quality Sensitive Receivers
3.5...... Identification, Prediction and
Evaluation of Environmental Impacts
3.6...... Assessment Methodology
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
4.1...... Introduction
4.2...... Environmental Legislation,
Policies, Plans, Standards and Criteria
4.3...... Description of the Environment
4.4...... Noise 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
Environmental Impacts
4.10.... Environmental Monitoring and Audit
4.11.... Summary
5.1...... Introduction
5.2...... Environmental Legislation,
Policies, Plans, Standards and Criteria
5.3...... Description of the Environment
5.4...... Sensitive Receivers
5.5...... Assessment Methodology
5.6...... Identification and Evaluation of
Environmental Impact
5.7...... Mitigation of Adverse
Environmental Impacts
5.8...... Residual Environmental Impact
5.9...... Environmental Monitoring and Audit
5.10.... Conclusion
6.1...... Introduction
6.2...... Environmental Legislation,
Policies, Plans and Standards
6.3...... Assessment Methodology
6.4...... Identification of Potential
Sources of Impact
6.5...... Prediction and Evaluation of
Environmental Impacts
6.6...... Mitigation Measures
6.7...... Evaluation of Residual Impacts
6.8...... Environmental Audit
6.9...... Conclusion
7.1...... Introduction
7.2...... Environmental Legislation,
Policies, Plans, Standards and Criteria
7.3...... Assessment methodology
7.4...... Description of the Environment
7.5...... Site Inspection
7.6...... Prediction and Evaluation of
Environmental Impacts
8.1...... Introduction
8.2...... Study Approach
8.3...... Background Study Information
8.4...... Hazard Identification
8.5...... Frequency Assessment
8.6...... Consequence Assessment
8.7...... Risk Assessment
8.8...... Identification and Analysis of
Mitigation Measures
8.9...... Recommended Measures
8.10.... Conclusion
9.1...... Introduction
9.2...... Environmental Legislation,
Standards and Guidelines
9.3...... Assessment Methodology
9.4...... Ecological Value
9.5...... Identification, Prediction and
Evaluation of Environmental Impact
9.6...... Cumulative Impacts
9.7...... Mitigation of Adverse
Environmental Impacts
9.8...... Evaluation of Residual Impacts
9.9...... Environmental Monitoring and Audit
9.10.... Conclusion
9.11.... References
10. LANDSCAPE
AND VISUAL IMPACT ACCESSMENT
10.1.... Introduction
10.2.... Environmental Legislation, Standards
and Guidelines
10.3.... Assessment Methodology
10.4.... Scope and Content of the Study
10.5.... Review of Planning and Development
Control Framework
10.6.... Baseline Study
10.7.... Landscape Impact Assessment
10.8.... Visual Impact Assessment
10.9.... Conclusion
11.1.... Introduction
11.2.... Environmental Legislation, Policies,
Plans, Standards and Criteria
11.3.... Description of the Environment
11.4.... Identification, Prediction and
Evaluation of Environmental Impacts
11.5.... Environmental Monitoring and Audit
11.6.... Conclusion
12 ENVIRONMENTAL
MONITORING AND AUDIT
12.1.... Introduction
12.2.... Air Quality
12.3.... Noise
12.4.... Water Quality
12.5.... Waste Management
12.6.... Land Contamination
12.7.... Ecology
12.8.... Hazard to Life
12.9.... Landscape and Visual
12.10.. Cultural Heritage
13.1.... Introduction
13.2.... Environmental Outcomes
13.3.... Air Quality Impact
13.4.... Noise Impact
13.5.... Water Quality Impacts
13.6.... Waste Management Implications
13.7.... Land Contamination Impact
13.8.... Hazard to Life
13.9.... Ecological Impact
13.10.. Landscape and Visual Impact
13.11.. Cultural Heritage Impact
13.12.. Environmental Monitoring and Audit
13.13.. Overall Conclusion
14. IMPLEMENTATION
SCHEDULE OF THE PROPOSED MITIGATION MEASURES
List of Tables
Table 2.1 Unmitigated
Landscape Impacts of Different Alignment Options on Landscape Resources and
Landscape Character Areas
Table 3.1......... Hong Kong Air Quality Objectives
Table
3.2......... Annual Average
Concentrations of Pollutants in the Latest Five Years (Year 2002 - 2006) at
Yuen Long Air Quality Monitoring Station
Table
3.3......... Details of
Representative Air Sensitive Receivers
Table
3.4......... Vehicle Classes in
EMFAC-HK Model
Table
3.5......... Emission Factors for
Year 2009 for Different Vehicle Classes (EMFAC-HK)
Table
3.6......... Predicted Maximum
1-hour Average NO2, 24-hour Average NO2 and RSP
Concentrations the Representative Air Sensitive Receivers
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......... Summary of
Representative Noise Assessment Point
Table
4.5......... Summary of Unmitigated
Construction Noise Levels at Representative NSRs During Normal Daytime Working
Hours
Table
4.6......... Summary of Mitigated
Construction Noise Levels at Representative NSRs During Normal Daytime Working
Hours
Table 5.1......... Water
Quality Objectives Statement for North Western WCZ
Table
5.2......... Water Quality in Tuen
Mun River in 2006
Table 6.1......... Summary
of Estimated Quantities of C&D Material and Disposal Routes
Table 7.1......... Reviewed
Historical Aerial Photographs
Table 8.1......... Population
and Traffic Data Sources
Table
8.2......... Estimation of Future
Population
Table
8.3......... Summary of Chlorine
Incidents of Water Treatment Plant from MHIDAS
Table
8.4......... Estimation of Served
Population per Plant
Table
8.5......... Estimation of Total
WTP in Europe and USA
Table
8.6......... Comparison of Event
Frequencies
Table
8.7......... External Event
Frequencies
Table
8.8......... Summary of Source Term
Modelling Results
Table
8.9......... Effective Outdoors
Probability of Fatality
Table
8.10....... Wind Tunnel Simulations
for Tuen Mun WTW
Table
8.11....... Scaling Factors for
Release Events
Table
8.12....... Candidate Risk
Mitigation Measures
Table
8.13....... Assumptions of
Mitigation Measures for CBA
Table
8.14....... Results of CBA
Table 9.1......... Area of Various Habitat Types within the Assessment
Area
Table
9.2a....... Ecological Value of
Woodland and Village in the Assessment Area
Table
9.2b....... Ecological Value of
Developed Area and Watercourse in the Assessment Area
Table
9.3 ....... Evaluation of Faunal
Species of Conservation Interest Recorded Within Assessment Area
Table
9.4a....... Overall Impact
Evaluation of Woodland and Village
Table
9.4b....... Overall Impact
Evaluation of Developed Area and Watercourse
Table 10.1 ..... Relationship
between Receptor Sensitivity and Impact Magnitude in Defining Impact Significance
Table
10.2....... List of the Landscape
Resources / Landscape Character Areas and Their Sensitivity to Change
Table
10.3....... Visual Sensitive
Receivers (VSRs) and Their Sensitivity to Change
Table
10.4....... Visual Sensitive
Receivers (VSRs) and Their Manitude of Impacts
Table
10.5....... Significant Landscape
Impacts of the Proposed Works during Construction Phase
Table
10.6....... Proposed Construction
Phase Landscape and Visual Mitigation Measures
Table
10.7....... Proposed Operation
Phase Landscape and Visual Mitigation Measures
Table
10.8....... Significance of
Landscape Impacts in the Construction and Operation Phases
Table
10.9....... Significance of Visual
Impacts in the Construction and Operation Phases (Note: All impacts adverse
unless otherwise noted.)
Table 13.1....... Summary of Key Environmental Outcomes/ Benefits
Table 14.1....... Implementation
Schedule for Air Quality Control
Table
14.2....... Implementation Schedule
for Noise Control
Table
14.3....... Implementation Schedule
for Water Quality Control
Table
14.4....... Implementation Schedule
for Waste Management
Table
14.5....... Implementation Schedule
for Hazard to Life
Table
14.6....... Implementation Schedule
for Ecology
Table
14.7....... Implementation Schedule
for Landscape and Visual - Construction
List of Figures
Figure
2.2 Location
of Concurrent Project within 500m Study Area
Figure
3.1 Locations
of Representative Air Sensitive Receivers
Figure
4.1 Locations
of Representative Noise Sensitive Receivers
Figure
4.2 Locations
of Proposed Noise Mitigation Measures
Figure
5.1 Locations
of River Water Quality Monitoring Stations in Tuen Mun River (TN4 & TN5)
Figure
8.1 Location
of Tuen Mun Water Treatment Works and Project Site Boundary
Figure
8.2 Hong
Kong EIAO Societal Risk FN Curve
Figure
8.3 Individual
Risk Contours Comparison (Model Validation)
Figure
8.4 FN
Curves Comparison (Model Validation)
Figure
8.5 Individual
Risk Contours
Figure
8.6 FN
Curves for TMWTW (Construction Stage – Year 2009)
Figure 8.7 FN Curves for TMWTW (Operation Stage – Year 2024)
Figure
10.1.1 Existing Aerial
Photo
Figure
10.2.1 Planning &
Development Framework (OZP)
Figure
10.3.1 Landscape
Resource
Figure
10.3.2 Photo of
Landscape Resources
Figure
10.4.1 Landscape
Character Area
Figure
10.5.1 Key VSRs and Zone
of Visual Influence
Figure
10.7.1 Landscape and
Visual Mitigation Measures
Figure
10.7.2 Landscape and
Visual Mitigation Measures
Figure
10.7.3 Compensatory
Planting Plan (Within San Hui Park)
Figure
10.7.4 Compensatory
Planting Plan (Outside San Hui Park)
Figure
10.8.1 View 1
Photomontage in VSR R1
Figure
10.8.2 View 2
Photomontage in VSR R7
List of Appendices
Appendix
2.1 Drawing For Alternative
Options
Appendix
3.1 Year 2024 Traffic Flow
Forecast
Appendix
3.2 Classification of Road
Type
Appendix
3.3 The adjusted exhaust
technology fractions
Appendix
3.4 2009 Vehicle Population
Appendix
3.5 Adopted Daily Trips and
Vehicle-Mile-Traveled (VMT) in Year 2024
Appendix
3.7 Summary Results of
Comparing the Total Emission from Year 2009 to 2024
Appendix
3.8 The Calculation of Maximum
Fleet Vehicle Emission
Appendix
4.1 Locations of “New” Road
Appendix
4.2 Correspondence Letter from
EPD on the Agreement on Noise Assessment Points
Appendix
4.3 Photos of Representative
Noise Assessment Point
Appendix
4.4 Construction Noise Impact
Assessment
Appendix
4.5 Year 2024 Traffic Forecast
Appendix
4.6 Traffic Noise Impact
Assessment
Appendix
7.1 Photo-documentation of
Site Inspection
Appendix
8.1 Population Forecast
Appendix
8.2 Historical Incidents from
MHIDAS database
Appendix
9.1 Representative Photographs
of Habitats Recorded in the Assessment Area
Appendix 9.2 Photograph of Species of Conservation Interest Recorded from the Assessment Area