CONTENTS
Page
List of Abbreviation abb-1
1.
INTRODUCTION 1-1
1.1 Background 1-1
1.2 Location and Description of the Project 1-1
1.3 Requirements under the Environmental Impact
Assessment
Ordinance 1-2
1.4 Purpose and Objective of the Environmental Impact
Assessment (EIA)
Study 1-2
1.5 Approach of the EIA Study 1-4
1.6 Structure of the EIA Report 1-4
2.
PROJECT DESCRIPTION 2-1
2.1 Background 2-1
2.2 Location and Description of the Project 2-1
2.3 Consideration of the Merit of the Proposed Project
for Flood 2-6
2.4 Consideration of Alternatives Means and Avoidance of
Environmental 2-10
2.5 Design Considerations 2-13
2.6 Consideration of Alternative Drainage Design 2-14
2.7 Ancillary Infrastructure 2-34
2.8 Construction Related Aspects 2-34
2.9 Consideration of Alternative Construction Methods 2-36
2.10 Justification of the Final Channel Design Recommendation 2-39
2.11 Project Interfaces / Concurrent Projects 2-39
2.12 Scope of Works during Operational Phase 2-40
2.13 Maintenance Responsibilities 2-41
2.14 Continuous Public Involvement 2-42
3.
AIR QUALITY IMPACT ASSESSMENT 3-1
3.1 Introduction 3-1
3.2 Air Quality Assessment Criteria 3-1
3.3 Air Sensitive Receivers 3-2
3.4 Baseline Air Quality 3-3
3.5 Air Quality Impact Assessment 3-4
3.6 Mitigation Measures 3-6
3.7 Concurrent Construction Activities 3-8
3.8 Monitoring and Audit Requirements 3-9
3.9 Summary 3-10
4.
CONSTRUCTION NOISE IMPACT ASSESSMENT 4-1
4.1 Introduction 4-1
4.2 Study Area 4-1
4.3 Construction Noise Criteria 4-2
4.4 Representative Noise Sensitive Receivers 4-3
4.5 Construction Noise Impact Assessment 4-5
4.6 Mitigation Measures 4-9
4.7 Residual Impact 4-17
4.8 Cumulative Impact 4-17
4.9 Summary of Mitigation Measures 4-20
4.10 Monitoring and Audit Requirements 4-22
4.11 Operational Noise 4-23
4.12 Summary 4-23
5.
WATER QUALITY IMPACT ASSESSMENT 5-1
5.1 Introduction 5-1
5.2 Environmental Legislation, Policies, Standards and
Criteria 5-1
5.3 Baseline Water Quality Conditions 5-1
5.4 Water Sensitive Receivers 5-5
5.5 Potential Impacts during Construction Phase 5-5
5.6 Mitigation Measures for Construction Phase 5-7
5.7 Potential Impacts during Operational Phase 5-14
5.8 Mitigation Measures for Operational Phase 5-15
5.9 Residual and Cumulative Impacts 5-19
5.10 Monitoring and Audit Requirement 5-20
5.11 Summary 5-20
5.12 References 5-21
6.
WASTE MANAGEMENT 6-1
6.1 Introduction 6-1
6.2 Relevant Legislation, Policies, Standards and
Criteria 6-1
6.3 Assessment Methodology 6-4
6.4 Sources and Types of Waste arising from the Project 6-4
6.5 Mitigation Measures 6-13
6.6 Land Contamination 6-22
6.7 Operational Waste 6-24
6.8 Evaluation of Residual Impacts 6-24
6.9 Environmental Audit 6-25
6.10 Summary 6-25
7.
ECOLOGICAL IMPACT ASSESSMENT 7-1
7.1 Introduction 7-1
7.2 Study Areas 7-1
7.3 Survey Methodologies 7-2
7.4 Habitats within the Study Area 7-6
7.5 Ecological Survey for LMH01 7-8
7.6 Ecological Survey for MUP03, MUP04A&B, MUP05 7-19
7.7 Ecological Value of Streams and other Habitats
within and
Adjacent to the Project Areas 7-31
7.8 Potential Ecological Impacts of Stream
Channelisation Proposals 7-40
7.9 Potential Adverse Ecological Impacts which require
to be addressed
by Minimization or Compensation Measures 7-55
7.10 Post-mitigation acceptability of the Project 7-61
7.11 Ecological Environmental Monitoring and Audit
(EM&A)
Requirements 7-64
7.12 Conclusions 7-68
References 7-69
8.
LANDSCAPE AND VISUAL IMPACT ASSESSMENT 8-1
8.1 Introduction 8-1
8.2 Scope and Content of Study 8-1
8.3 Purpose of LVIA 8-2
8.4 Environmental Legislation, Policies, Plans,
Standards and Criteria 8-3
8.5 Assessment Methodology & Criteria 8-4
8.6 Review of Planning and Development Control Framework 8-11
8.7 Existing Landscape Baseline Conditions 8-11
8.8 Landscape Impact Assessment 8-13
8.9 Existing Visual Baseline Conditions 8-16
8.10 Visual Impact Assessment 8-18
8.11 Recommended Landscape and Visual Impact Mitigation
Measures 8-21
8.12 Residual Environmental Impact 8-30
8.13 Environmental Monitoring and Audit Requirements 8-34
8.14 Conclusions 8-37
9.
CULTURAL HERITAGE IMPACT ASSESSMENT 9-1
9.1 Introduction 9-1
9.2 Aims of the Cultural Heritage Impact Assessment 9-1
9.3 Legislation and Standards 9-1
9.4 Assessment Methodology 9-2
9.5 Results of Desk-based Study 9-6
9.6 Results of Built Heritage Survey 9-8
9.7 Impact Assessment 9-9
9.8 Evaluation of Impacts 9-10
9.9 Mitigation Measures 9-16
9.10 Conclusions 9-17
9.11 References 9-17
10.
ENVIRONMENTAL MONITORING AND AUDIT REQUIREMENTS 10-1
10.1 Introduction 10-1
10.2 Background 10-1
10.3 Environmental Management 10-2
10.4 Project Organisation 10-2
10.5 Construction Programme 10-2
10.6 Air Quality 10-3
10.7 Construction Noise 10-4
10.8 Water Quality 10-5
10.9 Waste Management 10-6
10.10 Ecology 10-7
10.11 Landscape and Visual 10-11
10.12 Cultural Heritage 10-12
10.13 Other Information 10-12
11.
ENVIRONMENTAL OUTCOMES 11-1
11.1 Justification and Benefits of the Project 11-1
11.2 Population and Environmental Sensitive Areas
Protected 11-1
11.3 Environmental Friendly Design Recommended 11-3
11.4 Key Environmental Problems Avoided 11-4
11.5 Environmental Benefits of Environmental Protection
Measures
Recommended 11-4
12.
CONCLUSION 12-1
12.1 Background 12-1
12.2 Location and Description of the Project 12-1
12.3 Channel Design 12-3
12.4 Justification and Benefits of the Project 12-3
12.5 Key Environmental Issues 12-3
12.6 Air Quality Impact 12-4
12.7 Construction Noise Impact 12-4
12.8 Water Quality Impact 12-5
12.9 Waste Management 12-5
12.10 Ecological Impact 12-6
12.11 Landscape and Visual Impact 12-7
12.12 Cultural Heritage Impact 12-8
12.13 Environmental Monitoring and Audit 12-8
12.14 Overall Conclusion 12-9
END OF TEXT
APPENDICES
Appendix
A2 Correspondence
relating to LYT04
Appendix
B Details of
Construction Noise Impact Assessment
Appendix
C Sediment
Quality Testing Results
Appendix
D1 Construction and
Demolition Materials Management Plan (C&DMMP)
Appendix
D2 Aerial Photographs
Interpretation
Appendix
E Details of
Ecological Impact Assessment
Appendix
E1 Flora and Fauna
recorded during Surveys at LMH01
Appendix
E2 Flora and Fauna
recorded during Surveys at MUP03, MUP04 and MUP05
Appendix
F Details of
Cultural Heritage Impact Assessment (Built Heritage Catalogue)
Appendix
G Mitigation
Measures Implementation Schedule
LIST OF TABLES
Table
2.1 Summary of Works for the Proposed
Designated Projects of Channel Improvement Works
Table
2.2 Alternative Drainage Options
Considered for the Proposed DP Channels
Table 2.3 Summary of the Evaluation of Alternative Drainage Options for the Proposed DP Channels
Table
2.4 Summary
of the Evaluation of Alternative Channel Bed / Embankment Lining Options
Table
2.5 Evaluation
of the Drainage Design Options adopted for the Proposed Channels
Table
2.7 Tentative
Key Milestone Dates
Table
2.8 On-going
and Planned Projects in the Study Area
Table
2.9 Proposed
Maintenance Responsibilities
Table
2.10 Summary
of Continuous Public Involvement
Table
2.11 Summary
of Public Consultation
Table
3.1 Hong
Kong Air Quality Objectives (AQOs)
Table
3.2 Representative
Air Sensitive Receiver (ASR)
Table
3.3 Air
Pollutants Concentrations at Tai Po EPD Station (2003)
Table
3.4 Representative
ASRs chosen for Air Quality Monitoring during Construction Stage
Table 4.1 EIAO-TM
Daytime Construction Noise Standards
Table 4.2 Details
of Representative NSRs close to the Project
Table 4.3 Tentative
Construction Programme for the Proposed Channels
Table 4.4 Predicted
Noise Level during Construction of MUP Channels – Unmitigated
Table 4.5 Predicted
Noise Level during Construction of LMH01 – Unmitigated
Table 4.12 Cumulative
Construction Noise Impact
Table 4.13 Summary
of Proposed Construction Noise Mitigation Measures
Table
4.14 Representative
NSRs chosen for Noise Monitoring during Construction Stage
Table 5.1 Field
Observations at Watercourses in the Study Area
Table 5.2 Summary
of EPD Water Quality Data for River Indus from 2002 to 2004
Table 5.3 Summary
of Impacts from Construction Activities
Table 5.4 Summary
of Mitigation Measures for Construction Impacts
Table 5.5 Summary
of Mitigation Measures for Operational Impacts
Table
6.1 Sediment
Quality Criteria for the Classification of Sediment
Table 6.2 Estimated
Quantities of C&D Materials generated during Site Clearance
Table 6.3 Estimated
Quantities of C&D Materials generated during Channel Excavation and
Construction
Table 6.4 Results
of the Sediment Testing
Table 6.5 Types
of C&D Materials Generated by the Proposed Works
Table 6.6 Summary of the
Quantities of C&D Materials and Waste Arising from the Proposed Channels
Table 6.8 Preliminary
Disposal Programme of the C&D Materials
Table 6.9 Assessment of
Potential Contaminated Sites
Table 7.1 Habitat Types
and Areas within the Study Areas.
Table 7.2 Habitat
Types and Areas within the Project Areas
Table 7.3 Bat
Numbers at Lin Ma Hang Lead Mine Roost
Table 7.6 Freshwater fish species recorded at LMH01 by Chan (2001) and/or KFBG (2004)
Table 7.8 Dragonfly species recorded at LMH01 during
monthly surveys, October 2003 to September 2004
Table 7.9 Mean number of aquatic invertebrates per
kick sample recorded at LMH01, December 2004
Table 7.12 Freshwater fish recorded from MUP04A and MUP05 in January 2005, and
other recent records
Table 7.15 Ecological evaluation of
Stream and Riparian Zone at LMH01
Table 7.16 Ecological evaluation of
Agricultural Habitats at LMH01
Table 7.17 Ecological evaluation of
Woodland at LMH01
Table 7.18 Ecological evaluation of
Wasteland at LMH01
Table 7.19 Ecological evaluation of
Streams and Riparian Zone at MUP04A
Table 7.20 Ecological evaluation of
Streams and Riparian Zone at MUP05
Table 7.21 Ecological evaluation of
Roadside Plantation at MUP03, MUP04A, MUP04B and MUP05
Table 7.22 Ecological evaluation of
the Agricultural Habitats at MUP03, MUP04A, MUP04B and MUP05
Table 7.23 Ecological evaluation of
Orchard/Nursery at MUP04A, MUP04B
Table 7.24 Ecological evaluation of
Bare Ground and Wasteland at MUP04A, MUP04B & MUP05
Table 7.25 Significance of Potential
Ecological Impacts on LMH01
Table 7.29 Recommended tree and
bamboo species for planting at MUP05
Table 7.34 Recommended Ecological
Monitoring and Audit Programme at LMH01
Table 7.35 Recommended Ecological
Monitoring and Audit Programme at MUP05
Table 8.1 Proposed
Works covered in the LVIA
Table 8.2 The
Significance Threshold Matrix A
Table 8.3 Residual
Impact Significance Threshold Matrix
Table 8.4 Landscape
Character Areas
Table 8.5A Landscape
Impact MUP03, MUP04A, MUP04B & MUP05 – Assuming No Mitigation
Table 8.5B Landscape
Impact LMH01 – Assuming No Mitigation
Table 8.6A Visually
Sensitive Receivers (MUP03, MUP04A, MUP04B & MUP05)
Table 8.6B Visually Sensitive
Receivers (LMH01)
Table 8.7A Summary of
Visual Impact – Assuming No Mitigation (MUP03, MUP04A, MUP04B & MUP05)
Table 8.7B Summary of
Visual Impact – Assuming No Mitigation (LMH01)
Table 8.8 List
of Suitable Trees for Single Tree Planting
Table 8.9 Details
of Tree Preservation
Table 8.10A Landscape Impact MUP03,
MUP04A, MUP04B & MUP05 – Assuming Mitigation
Table 8.10B Landscape Impact LMH01
– Assuming Mitigation
Table 8.11A Summary of Visual Impact – Assuming Mitigation (MUP03, MUP04A, MUP04B, MUP05)
Table 8.11B Summary of Visual
Impact – Assuming Mitigation (LMH01)
Table 8.12 Proposed
Landscape and Visual Impact Mitigation Measures
Table 9.10 Summary
of Mitigation Measures and Implementation Schedule
Table 10.1 Representative ASRs chosen
for Air Quality Monitoring during Construction Stage
Table 10.2 Representative NSRs for Noise Monitoring during Construction Stage
Table
10.3 Water
Quality Monitoring Stations during Construction Stage
Table
10.4 Recommended
Ecological Monitoring and Audit Programme at LMH01
Table
10.5 Recommended
Ecological Monitoring and Audit at MUP05
Table
12.1 Scale
of Proposed Drainage Works
LIST OF FIGURES
Figure 1.1 Location
Plan of the Project
Figure 1.2 Proposed
Channel at Lung Yeuk Tau (LYT04) in relation to the Site of Cultural Heritage
Figure 2.1 Location
Plan of Proposed (Designated Project) Channels
Figure 2.4 General
Arrangement for Proposed Improvement Works at Lin Ma Hang (LMH 01)
Figure 2.5 Typical
Layout and Section of Two-Stage Channels
Figure 2.6 Preliminary
Secondary Channel Design in Lung Yeuk Tau (LYT04)
Figure 2.7 Revised
Channel Design in Lung Yeuk Tau (LYT04)
Figure 2.8 Preliminary
Secondary Channel Design in Man Uk Pin Region (MUP03, 04A, 04B & 05)
Figure 2.9 Preliminary
Secondary Channel Design in Lin Ma Hang (LMH01)
Figure 2.12 Preliminary Construction Programme for
MUP03, MUP04A, MUP04B, MUP05 and LMH01 Channels
Figure 5.1 Schematic
Diagram of Typical Temporary Drainage Measures during Construction Stage
Figure 6.1 Sediment
Sampling Locations at MUP05
Figure 7.1 Location
Plan of Proposed Drainage Channels Under Package C Project
Figure 7.2 LMH01
Study and Project Areas and Habitat Map
Figure 7.3a MUP03,
04 & 05 Study and Project Areas and Habitat Map
Figure 7.3b MUP03,
04 & 05 Study and Project Areas and Habitat Map
Figure 7.4 Downstream
section of LMH01 – concrete-lined channel to be replaced by gabion lining
Figure 7.5 Existing
concrete lined bank of LMH01 to be replaced by gabion lining
Figure 7.6 MUP05
– existing semi-natural channel
Figure 7.7 MUP04A
– existing disturbed channel on lower section of stream
Figure 7.8 MUP03
– existing ditch
Figure 7.9 MUP05
– channelised downstream section
Figure 7.10 MUP05
– existing stream showing well-vegetated north bank
Figure 7.11 Initial General Arrangement Drawing for MUP03, 04 & 05 (382486/REV/027A)
Figure 7.12 Initial
General Arrangement Drawing for MUP03, 04 & 05 (382486/REV/028A)
Figure 7.13 Revised
General Arrangement Drawing for MUP03, 04A, 04B & 05
Figure 7.14 Revised
General Arrangement Drawing for MUP03, 04A, 04B & 05
Figure 7.15 Typical
Section of the Proposed Two-stage Channel at MUP05
Figure 8.1A Landscape
Resource (LR) & Character Areas (LCA) for MUP03, 04A/B, 05
Figure 8.1B Landscape
Resource (LR) & Character Areas (LCA) for LMH01
Figure 8.2 Landscape Character Areas (LCA): Photographic Record
Figure 8.3A-I (Key Plan)
Unmitigated Landscape Impact (Tree Preservation Plan) MUP03, 04A/B, 05
Figure 8.3A-II Unmitigated Landscape
Impact (Tree Preservation Plan) MUP03, 04A/B, 05
Figure 8.3A-III Unmitigated Landscape Impact
(Tree Preservation Plan) MUP03, 04A/B, 05
Figure 8.3A-IV Unmitigated Landscape Impact (Tree
Preservation Plan) MUP03, 04A/B, 05
Figure 8.3A-V Unmitigated Landscape
Impact (Tree Preservation Plan) MUP03, 04A/B, 05
Figure 8.3B-I (Key Plan)
Unmitigated Landscape Impact (Tree Preservation Plan) LMH01
Figure 8.3B-II Unmitigated Landscape
Impact (Tree Preservation Plan) LMH01
Figure
8.3B-III Unmitigated
Landscape Impact (Tree Preservation Plan) LMH01
Figure 8.4A Location
of Visually Sensitive Receivers & Zone of Visual Influence MUP03, 04A/B, 05
Figure 8.4A-i MUP03,
04A/B, 05 - Visually Sensitive Receivers – VSR 01 & 02
Figure 8.4A-ii MUP03, 04A/B, 05
- Visually Sensitive Receivers – VSR 03 & 04
Figure
8.4A-iii MUP03,
04A/B, 05 - Visually Sensitive Receivers – VSR 05 & 06
Figure 8.4A-iv MUP03, 04A/B, 05 -
Visually Sensitive Receivers – VSR 07 & 08
Figure 8.4A-v MUP03, 04A/B, 05
- Visually Sensitive Receivers – VSR 09 & 10
Figure 8.4A-vi MUP03, 04A/B, 05 -
Visually Sensitive Receivers – VSR 11 & 12
Figure
8.4A-vii MUP03, 04A/B,
05 - Visually Sensitive Receivers – VSR 13 & 14
Figure
8.4A-viii MUP03, 04A/B, 05 -
Visually Sensitive Receivers – VSR 15
Figure 8.4B Location
of Visually Sensitive Receivers & Zone of Visual Influence LMH01
Figure 8.4B-i LMH01 -
Visually Sensitive Receivers – VSR 01 & 02
Figure 8.4B-ii LMH01 - Visually
Sensitive Receivers – VSR 03 & 04
Figure 8.4B-iii LMH01 - Visually Sensitive Receivers – VSR 05 & 06
Figure 8.4B-iv LMH01 - Visually
Sensitive Receivers – VSR 07
Figure 8.5A Visual
Impact Unmitigated – MUP03, 04A/B & 05 (VSR 02)
Figure 8.5B Visual
Impact Unmitigated – LMH01 (VSR 07)
Figure 8.6A-I (Key Plan)
Landscape Mitigation Proposal MUP03, 04A/B, 05
Figure 8.6A-II Landscape Mitigation
Proposal MUP03, 04A/B, 05
Figure
8.6A-III Landscape
Mitigation Proposal MUP03, 04A/B, 05
Figure 8.6A-IV Landscape Mitigation Proposal
MUP03, 04A/B, 05
Figure 8.6A-V Landscape Mitigation
Proposal MUP03, 04A/B, 05
Figure 8.6B-I (Key Plan)
Landscape Mitigation Proposal LMH01
Figure 8.6B-II Landscape Mitigation
Proposal LMH01
Figure
8.6B-III Landscape
Mitigation Proposal LMH01
Figure 8.7 Landscape
Mitigation Measure
Figure 8.8A Residual
Visual Impact – MUP03, 04A/B & 05 (VSR 02)
Figure 8.8B Residual
Visual Impact – LMH01 (VSR 07)
Figure 9.1 Recorded
Resources in Lin Ma Hang (AAHB-838 to 852 and AAHB-855 to 881)
Figure 9.2 Recorded
Resources near Loi Tung - Shrines (AAHB-853 and 854)
Figure 9.3 Proposed
Works Area: LMH01 (Lin Ma Hang)
Figure 9.4 Proposed
Works Area: MUP03, 04A, 04B & 05 (Near Loi Tung)