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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 3 – marine Works
Part E - Schedule 2 DP5: Wan Chai
East Sewage Outfall
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........................................................................ 1-7
1.8 Structure
of this Volume 3 – Part E.................................................................... 1-7
2.1 Site
Location..................................................................................................... 2-1
2.2 EIA
Study Area................................................................................................ 2-1
2.3 Project
Requirements, Scope and Benefits.......................................................... 2-1
2.4 Development
Alternatives.................................................................................. 2-2
2.5 Construction
Methods and Engineering Requirements.......................................... 2-2
2.6 Operation
of the Project..................................................................................... 2-2
2.7 Works
Programme............................................................................................ 2-2
2.8 Related
Projects................................................................................................ 2-3
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............................................................................................ 3-2
3.5 Identification
of Environmental Impacts............................................................... 3-2
3.6 Mitigation
of Adverse Environmental Impacts...................................................... 3-3
3.7 Evaluation
of Residual Impacts........................................................................... 3-3
3.8 Environmental
Monitoring and Audit................................................................... 3-3
3.9 Conclusion........................................................................................................ 3-3
4.1 Introduction....................................................................................................... 4-1
4.2 Environmental
Legislation, Policies, Plans, Standards and Criteria......................... 4-1
4.3 Description
of the Environment........................................................................... 4-3
4.4 Sensitive
Receivers............................................................................................ 4-3
4.5 Assessment
Methodology................................................................................... 4-4
4.6 Identification
of Environmental Impacts............................................................... 4-7
4.7 Prediction
and Evaluation of Environmental Impacts............................................ 4-7
4.8 Mitigation
of Adverse Environmental Impacts...................................................... 4-8
4.9 Evaluation
of Residual Impacts........................................................................... 4-9
4.10 Environmental
Monitoring and Audit................................................................... 4-9
4.11 Conclusion........................................................................................................ 4-9
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................................................................................. 5-11
5.7 Prediction
and Evaluation of Environmental Impacts........................................... 5-24
5.8 Mitigation
of Adverse Environmental Impacts.................................................... 5-36
5.9 Evaluation
of Residual Impacts......................................................................... 5-43
5.10 Environmental
Monitoring and Audit.................................................................. 5-44
5.11 Conclusion....................................................................................................... 5-44
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........................................................ 6-7
6.6 Prediction
and Evaluation of Environmental Impacts............................................ 6-7
6.7 Mitigation
Measures.......................................................................................... 6-9
6.8 Evaluation
of Residual Impacts......................................................................... 6-13
6.9 Environmental
Audit......................................................................................... 6-13
6.10 Conclusion....................................................................................................... 6-13
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
9.1 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..................................................... 9-19
9.8 Evaluation
of Residual Impacts......................................................................... 9-19
9.9 Evaluation
of Cumulative Impacts..................................................................... 9-19
9.10 Environmental
Monitoring and Audit.................................................................. 9-20
9.11 Conclusion....................................................................................................... 9-20
9.12 References...................................................................................................... 9-21
10. LANDSCAPE AND VISUAL IMPACT ASSESSMENT........................................ 10-1
10.1 Introduction..................................................................................................... 10-1
10.2 Environmental
Legislation, Standards and Guidelines.......................................... 10-1
10.3 Assessment
Methodology................................................................................. 10-2
10.4 Scope
and Content of the Study........................................................................ 10-7
10.5 Review
of Planning and Development Control Framework................................. 10-8
10.6 Comments
on Landscape and Visual Issues received during Consultations......... 10-11
10.7 Baseline
Study............................................................................................... 10-13
10.8 Landscape
Impact Assessment....................................................................... 10-33
10.9 Visual
Impact Assessment.............................................................................. 10-40
10.10 Conclusion..................................................................................................... 10-47
11.1 Introduction..................................................................................................... 11-1
11.2 Review
of Report No: SDA8827....................................................................... 11-1
11.3 Mitigation
of Adverse Impacts.......................................................................... 11-1
11.4 Residual
Environmental Impact......................................................................... 11-1
11.5 Environmental
Monitoring and Audit Requirements............................................ 11-1
11.6 Conclusion....................................................................................................... 11-2
12 ENVIRONMENTAL MONITORING AND AUDIT.............................................. 12-1
12.1 Introduction..................................................................................................... 12-1
12.2 Air
Quality Impact........................................................................................... 12-1
12.3 Noise
Impact................................................................................................... 12-1
12.4 Water
Quality Impact....................................................................................... 12-2
12.5 Waste
Management......................................................................................... 12-2
12.6 Land
Contamination......................................................................................... 12-2
12.7 Marine
Ecology............................................................................................... 12-2
12.8 Landscape
and Visual...................................................................................... 12-3
12.9 Cultural
Heritage............................................................................................. 12-3
14.1 Introduction..................................................................................................... 14-1
14.2 Environmental
Outcomes................................................................................ 14-10
14.3 Air
Quality Impact......................................................................................... 14-14
14.4 Noise
Impact................................................................................................. 14-14
14.5 Water
Quality Impacts................................................................................... 14-15
14.6 Waste
Management Implications..................................................................... 14-15
14.7 Land
Contamination Impact............................................................................ 14-15
14.8 Marine
Ecological Impact............................................................................... 14-16
14.9 Landscape
and Visual Impact......................................................................... 14-16
14.10 Cultural
Heritage Impact................................................................................ 14-16
14.11 Environmental
Monitoring and Audit................................................................ 14-17
14.12 Overall
Conclusion......................................................................................... 14-17