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Content |
Chapter Title Page
1.1 EIA
Study Brief 1-1
1.2 Purpose
and Scope of the EIA Study 1-1
1.3 Structure
of this EIA Study Report 1-3
2.1 The
Project Requirements and Programme 2-1
2.2 The
Study Area and Surrounding Environment 2-2
2.3 Need
for the Project and Consequences of not Proceeding with the Project 2-2
2.4 Consideration
of Alternative Construction Methods and Sequence of Work 2-3
2.5 Selection
of Preferred Option 2-8
2.6 Existing
Submarine Outfall within
2.7 Need
for Maintenance Dredging 2-11
2.8 Interface
with Planned Projects 2-13
3. Water
Quality Impact Assessment 3-1
3.1 Introduction 3-1
3.2 Environmental
Legislation, Standards, Guidelines and Criteria 3-2
3.3 Description
of the Environment 3-5
3.4 Water
Sensitive Receivers 3-7
3.5 Assessment
Methodology 3-8
3.6 Identification
of Environmental Impact 3-17
3.7 Prediction
and Evaluation of Environmental Impacts 3-20
3.8 Mitigation
of Adverse Environmental Impact 3-78
3.9 Evaluation
of Residual Impacts 3-89
3.10 Environmental
Monitoring and Audit 3-89
3.11 Summary 3-89
4. Waste
Management Impact Assessment 4-1
4.1 Introduction 4-1
4.2 Environmental
Legislation 4-2
4.3 Assessment
Methodology 4-4
4.4 Identification
and Evaluation of Environmental Impacts 4-18
4.5 Mitigation
of Adverse Environmental Impacts 4-22
4.6 Evaluation
of Residual Impacts 4-28
4.7 Environmental
Monitoring and Audit 4-28
4.8 Summary 4-28
5. Marine
Ecological Impact Assessment 5-1
5.1 Introduction 5-1
5.2 Environmental
Legislation, Standards, Guidelines and Criteria 5-2
5.3 Assessment
Methodology 5-3
5.4 Baseline
Conditions & Marine Ecological Sensitive Receivers 5-7
5.5 Ecological
Importance 5-16
5.6 Prediction
and Evaluation of Environmental Impacts 5-23
5.7 Mitigation
of Adverse Environmental Impact 5-34
5.8 Cumulative
Impact 5-35
5.9 Evaluation
of Residual Impacts 5-36
5.10 Environmental
Monitoring and Audit 5-36
5.11 Summary 5-36
5.12 References 5-37
6. Fisheries
Impact Assessment 6-1
6.1 Introduction 6-1
6.2 Environmental
Legislation, Standards, Guidelines and Criteria 6-2
6.3 Fisheries
Impact Assessment Methodology 6-2
6.4 Baseline
Conditions 6-3
6.5 Identification
of Fisheries Impacts 6-6
6.6 Assessment
of Fisheries Impacts 6-10
6.7 Mitigation
of Adverse Environmental Impacts 6-11
6.8 Cumulative
Impact 6-12
6.9 Evaluation
of Residual Fisheries Impacts 6-12
6.10 Environmental
Monitoring and Audit 6-12
6.11 Summary 6-12
6.12 References 6-13
7. Hazard
to Life Assessment 7-1
7.1 Introduction 7-1
7.2 Potentially
Hazardous Facilities 7-4
7.3 Project
Data 7-5
7.4 Hazard
Identification 7-11
7.5 Consequence
Assessment 7-14
7.6 Frequency
Assessment 7-23
7.7 Risk
Results 7-25
7.8 Conclusion
and Recommendations 7-25
7.9 References 7-26
8. Landscape
Visual and Glare Impact Assessment 8-1
8.1 Introduction 8-1
8.2 Environmental
Legislation, Standards, Guidelines and Criteria 8-2
8.3 Assessment
Methodology 8-2
8.4 Review
of Planning and Development Control Framework 8-6
8.5 Landscape
and Visual Baseline 8-6
8.6 Potential
Sources of Landscape and Visual Impact 8-10
8.7 Landscape
Impact Assessment 8-10
8.8 Visual
and Glare Impact Assessment 8-11
8.9 Mitigation
Measures 8-12
8.10 Residual
Environmental Impact 8-13
8.11 Cumulative
Effect 8-13
8.12 Environmental
Monitoring and Audit Requirement 8-19
8.13 Summary 8-19
9. Cultural
Heritage Impact Assessment 9-1
9.1 Introduction 9-1
9.2 Methodology 9-3
9.3 Results 9-5
9.4 Archaeological
Potential 9-13
9.5 Recommendation 9-14
9.6 References 9-14
10. Noise
Impact Assessment 10-1
10.1 Introduction 10-1
10.2 Relevant
Legislation, Standards & Guidelines 10-1
10.3 Description
of the Environment 10-3
10.4 Potential
Noise Sources 10-3
10.5 Study
Area and Noise Sensitive Receivers 10-4
10.6 Assessment
Approach & Methodology 10-5
10.7 Prediction
and Evaluation of Environmental Impacts 10-6
10.8 Mitigation
Measures 10-7
10.9 Environmental
Monitoring and Audit (EM&A) Requirements 10-8
10.10 Summary 10-8
11. Air
Quality Impact Assessment 11-1
11.1 Introduction 11-1
11.2 Relevant
Legislation, Standards & Guidelines 11-1
11.3 Description
of the Environment 11-2
11.4 Study
Area and Air Sensitive Uses 11-3
11.5 Air
Pollution Emission Source 11-4
11.6 Evaluation
of Potential Impacts 11-4
11.7 Mitigation
of Potential Impacts 11-5
11.8 Residual
Environmental Impacts 11-5
11.9 Environmental
Monitoring and Audit Requirements 11-6
11.10 Summary 11-6
12. Environmental
Monitoring and Audit (EM&A) Requirements 12-1
12.1 Introduction 12-1
12.2 Project
Organisation 12-1
12.3 EM&A
Manual and Implementation Schedule 12-1
12.4 EM&A
Programme 12-2
12.5 Environmental
Management Plan 12-4
12.6 Method
Statements 12-4
12.7 Complaint
Procedure 12-4
13. Implementation
Schedule 13-1
14.1 General 14-1
14.2 Summary
of Environmental Outcomes 14-1
14.3 Water
Quality 14-2
14.4 Waste
Management 14-3
14.5 Marine
Ecology 14-4
14.6 Fisheries 14-5
14.7 Hazard
to Life 14-6
14.8 Landscape,
Visual and Glare 14-6
14.9 Cultural
Heritage 14-6
14.10 Noise 14-6
14.11 Air
Quality 14-7
14.12 Environmental
Monitoring and Audit 14-7
14.13 Summary 14-7
Tables
Table 2.1: Benefits and
Disbenefits of Dredgers which could be used for this Project 2-8
Table 2.2: Selection of
Preferred Dredging Option 2-9
Table 2.3: Volume of
Maintenance Dredging undertaken by Container Terminal Operators; 2000 - 2009 2-12
Table 2.4: Summary of
potentially concurrent projects 2-17
Table 2.5: Concurrent
Projects Programme 2-19
Table 3.1: Summary of Water
Quality Objectives 3-2
Table 3.2: WSD’s Water
Quality Criteria for Flushing Water at Sea Water Intakes 3-3
Table 3.3: Marine Water
Quality in Victoria Harbour Water Control Zone at Selected Stations in 2008 3-5
Table 3.4: Marine Water
Quality in Southern and Western Buffer Water Control Zones at Selected Stations
in 2008 3-6
Table 3.5: Bottom Sediment
Quality at Selected Stations in 2004 – 2008 3-7
Table 3.6: Summary of Parameters
for Sediment Plume Model (Delft3D-WAQ) 3-9
Table 3.7: Sediment Quality
near the Dredging Area 3-10
Table 3.8: Summary of
Assumptions for Scenarios 1 to 6 3-14
Table 3.9: Summary of
Assumptions for Scenario 7 3-14
Table
3.10: Background Levels
of Depth-averaged and Surface SS 3-18
Table
3.11: Background Levels
of DO, TIN and UIA 3-19
Table
3.12: Predicted
Suspended Solids Elevations at Gazetted Beaches, Marine Ecology, and Fisheries
Sensitive Receivers for Scenario 1 3-21
Table
3.13: Predicted Suspended
Solids Concentrations at Cooling and Sea Water Intakes for Scenario 1 3-22
Table
3.14: Predicted
Suspended Solids Elevations at Gazetted Beaches, Marine Ecology, and Fisheries
Sensitive Receivers for Scenario 2 3-23
Table
3.15: Predicted
Suspended Solids Concentrations at Cooling and Sea Water Intakes for Scenario 2 3-24
Table
3.16: Predicted
Suspended Solids Elevations at Gazetted Beaches, Marine Ecology, and Fisheries
Sensitive Receivers for Scenario 3 3-25
Table
3.17: Predicted
Suspended Solids Concentrations at Cooling and Sea Water Intakes for Scenario 3 3-26
Table
3.18: Predicted
Suspended Solids Elevations at Gazetted Beaches, Marine Ecology, and Fisheries
Sensitive Receivers for Scenario 4 3-28
Table
3.19: Predicted
Suspended Solids Concentrations at Cooling and Sea Water Intakes for Scenario 4 3-29
Table
3.20: Predicted
Suspended Solids Elevations at Gazetted Beaches, Marine Ecology, and Fisheries
Sensitive Receivers for Scenario 5 3-30
Table
3.21: Predicted
Suspended Solids Concentrations at Cooling and Sea Water Intakes for Scenario 5 3-31
Table
3.22: Predicted
Suspended Solids Elevations at Gazetted Beaches, Marine Ecology, and Fisheries
Sensitive Receivers for Scenario 6 3-33
Table
3.23: Predicted
Suspended Solids Concentrations at Cooling and Sea Water Intakes for Scenario 6 3-34
Table
3.24: Summary of SS
Results for Scenarios 1 - 7 3-38
Table
3.25: Summary of
Dissolved Oxygen for Scenario 1-7 3-43
Table
3.26: Elutriate Test
Results of Sediment Samples 3-48
Table
3.27: Elutriate Test
Results 3-54
Table
3.28: Ammoniacal
Nitrogen Concentrations at Sediment Sources (All sampling locations included) 3-58
Table
3.29: Combination of
Scenarios 3-58
Table
3.30: Predicted
Elutriate Ammoniacal Nitrogen Concentrations at WSD Flushing Water Intakes (all
sampling locations included) 3-59
Table
3.31: Ammoniacal
Nitrogen Concentrations at Sediment Sources (with excision of hotspot S2) 3-60
Table
3.32: Predicted
Elutriate Ammoniacal Nitrogen Concentrations at WSD Flushing Water Intakes
(with the excision of hotspot S2) 3-61
Table
3.33: Predicted
Elutriate Ammoniacal Nitrogen Concentrations at WSD Flushing Water Intakes (for
only hotspot S2 case) 3-62
Table
3.34: Predicted
Elutriate UIA Concentrations at
Table
3.35: Predicted
Elutriate UIA Concentrations at
Table
3.36: Predicted Elutriate
Unionized Ammonia Concentrations at Water Sensitive Receivers (for only hotspot
S2 case) 3-69
Table
3.37: Volume of Maintenance Dredging undertaken by
Container Terminal Operators; 2000 - 2009 3-73
Table
3.38: Maximum Reduction
in predicted SS elevations at
Table
3.39: Maximum Reduction
in predicted SS elevations at Cooling and Flushing Water Intakes for the Scenario
of 1,500 m3/day at Source C Compared to 12,000 m3/day 3-75
Table
3.40: Maximum Reduction
in predicted DO depletions at the WSRs for the Scenario of 1,500 m3/day at
Source C Compared to 12,000 m3/day 3-76
Table
3.41: Water Quality
Monitoring Programme for dredging works in Kwai Tsing Container Terminal 1-4. 3-76
Table
3.42: Maximum SS Levels
(mg L-1) with Silt Screen 3-79
Table
3.43: Allowed Maximum
Number of Grab Dredgers or Cutter Suction Dredger Operating Simultaneously 3-80
Table
3.44: Mitigation
Proposal for Ammoniacal Nitrogen (after excision of S2) 3-81
Table
3.45: Mitigation
Proposal for UIA (after excision of S2) 3-81
Table
3.46: Mitigation
Proposal for Dry and Wet Season for both Ammoniacal Nitrogen and UIA 3-82
Table
3.47: Prediction of Unmitigated
and Mitigated Ammoniacal Nitrogen Concentrations at Sensitive Receivers based
on hotspot S2 case only 3-83
Table
3.48: Prediction of
Unmitigated and Mitigated UIA Concentrations at Sensitive Receivers based on
hotspot S2 case only 3-85
Table 4.1: Vibrocore / Grab
Sampling Locations and Thickness of Sediment Required Dredging 4-6
Table 4.2: Sample
Arrangement for Chemical Testing 4-7
Table 4.3: Contaminant
Levels of Samples and Their Categories 4-10
Table 4.4: Summary of
Classification of Samples after passing Chemical Screening Test 4-16
Table 4.5: Summary of
Ancillary Tests Results 4-16
Table 4.6: Summary of
Toxicity Test Failure 4-17
Table 4.7 Estimated
Quantity of Different Types of Marine Sediment to be Dredged for Disposal 4-19
Table 4.8: Summary of
Dredging Rate, Manoeuvring of Dredgers and Disposal Routings* 4-24
Table 4.9: Summary of Waste
Handling Procedures and Disposal Routes* 4-26
Table 5.1: Tier I Benthic
Attribute Categories 5-6
Table 5.2: Tier I Ordinal Ranks
of Percentage Cover of Benthic Attributes 5-7
Table 5.3: Taxonomic
inventory Identification 5-7
Table 5.4: Findings of
Soft-bottom Marine Benthic Sampling at Selected Stations – Summer &
Winter (CPSL 2002) 5-11
Table 5.5: Summary of
Soft-bottom Marine Benthic Survey Findings for this Study (January 2010) 5-12
Table 5.6: Evaluation of the
Ecological Importance of the Inter-tidal Habitats 5-17
Table 5.7: Evaluation of the
Ecological Importance of the Hard-bottom Sub-tidal Habitats 5-19
Table 5.8: Evaluation of the
Ecological Importance of the Soft-bottom Marine Benthic Habitats 5-20
Table 5.9: Evaluation of the
Ecological Importance of the Marine Waters 5-21
Table
5.10: Evaluation on
Species of Conservation Importance 5-23
Table
5.11: Impact Evaluation
of Inter-tidal Habitats 5-24
Table
5.12: Impact Evaluation
of Hard-bottom Sub-tidal Habitats 5-26
Table
5.13: Impact Evaluation
of Soft-bottom Marine Benthic Habitats 5-28
Table
5.14: Impact Evaluation
of Marine Water Habitats 5-30
Table
5.15: Impact Evaluation
of Marine Mammals 5-30
Table 6.1: Figures of Hong
Kong Capture Fisheries Industry in the past 6 years 6-3
Table 6.2: Fishing
operations within the Project area 6-4
Table 6.3: Predicted
Suspended Solids Elevations at Fish Culture Zones for Scenarios 1 to 6 6-7
Table 6.4: Summary of
Dissolved Oxygen and Total Inorganic Nitrogen for the worst case among
Scenarios 1-7 6-9
Table 6.5: Evaluation of
Potential Fisheries Impacts during Construction Phase 6-10
Table 6.6: Evaluation of
Potential Fisheries Impacts during Operation Phase 6-11
Table 7.1: LPG Throughput
and Storage 7-5
Table 7.2: Temporal Changes
in Population 7-7
Table 7.3: Land Population
Considered in this Study for Years 2009, 2012 and 2014 7-8
Table 7.4: Road Traffic
Population Adopted in this Study 7-9
Table 7.5: Characteristics
of Different Vessels 7-9
Table 7.6: Day-time Marine
Traffic Density Across the Study Area 7-10
Table 7.7: Night-time Marine
Traffic Density Across the Study Area 7-10
Table 7.8: Wind Direction
Frequencies for Day 7-11
Table 7.9: Wind Direction
Frequencies for Night 7-11
Table
7.10: LPG Accidental
Release Scenarios Considered 7-13
Table
7.11: Petroleum Product
Release Scenarios in the PAFF EIA [8] 7-13
Table
7.12: LPG Release Events
at SINOPEC Depot 7-14
Table
7.13: LPG Release Events
at ExxonMobil Depot 7-15
Table
7.14: List of
Consequences of Hazardous Events for the SINOPEC Depot (N11) 7-18
Table
7.15: Maximum
Representative Consequence Distances in the PAFF EIA [8] 7-19
Table 7
16: List of Consequences of
Hazardous Events for the ExxonMobil Depot (N6) 7-21
Table
7.17: Frequencies of
Failure Events at SINOPEC Depot 7-23
Table
7.18: Frequencies of
Failure Events at ExxonMobil Depot 7-24
Table 8.1: Relationship
between Receptor Sensitivity and Impact Magnitude in Defining Impact
Significance 8-4
Table 8.2: Key VSRs
Identified within the ZVI 8-10
Table 8.3 Proposed
Visual Mitigation Measures 8-13
Table 8.4: Summary of
Landscape Impact 8-14
Table 8.5: Summary of Visual
and Glare Impact 8-15
Table 8.6: Landscape and
Visual Mitigation Measures Implementation Schedule 8-20
Table 9.1: Geophysical
Survey Techniques Used 9-4
Table 9.2: Locations of
Unidentified Sonar Contacts 9-11
Table 9.3: Seismic Data
contacts 9-12
Table
10.1: Noise Standards
for Daytime Construction Activities 10-2
Table
10.2: Area Sensitivity
Rating 10-2
Table
10.3: Acceptable Noise
Level for Construction Noise 10-3
Table
10.4: Identified Noise
Sensitive Receivers 10-4
Table
10.5: Water Quality
Modelling Scenarios for Dredging Operation 10-5
Table
10.6: Predicted
Construction Noise Levels at the Representative NSR 10-6
Table
10.7: Construction Noise
Levels at the Representative NSR 10-8
Table
11.1: Hong Kong Air
Quality Objectives 11-2
Table
11.2: 5-Year Averaged
Annual TSP Concentration in Kwai Chung 11-2
Table
11.3: Representative Air
Sensitive Receivers 11-3