Volume 1 of 3
1.1 Background..................................................................................................... 1-1
1.2 Objectives of the EIA Study............................................................................. 1-2
1.3 Approach to EIA Study................................................................................... 1-3
1.4 EIA Study Scope............................................................................................. 1-4
1.5 Structure of the EIA Report.............................................................................. 1-5
1.6 Common Abbreviations.................................................................................... 1-6
2.1 Background..................................................................................................... 2-1
2.2 Existing Drainage System.................................................................................. 2-1
2.3 Need for the Project........................................................................................ 2-3
2.4 “Without Project” Alternative........................................................................... 2-4
2.5 Consideration of Alternative Alignment Design Options / Drainage
Improvement Schemes..................................................................................... 2-4
2.6 Consideration of Alternative Construction Methods and
Sequences of Works
...................................................................................................................... 2-10
2.7 Description of the Preferred Option................................................................ 2-15
3. AIR
QUALITY IMPACT ASSESSMENT.............................................................. 3-1
3.1 Introduction..................................................................................................... 3-1
3.2 Environmental Legislation, Standards and Guidelines......................................... 3-1
3.3 Existing Environment........................................................................................ 3-2
3.4 Identification of Air Sensitive Receivers............................................................. 3-4
3.5 Identification of Potential Air Quality Impacts.................................................... 3-5
3.6 Concurrent Projects......................................................................................... 3-6
3.7 Assessment Methodology................................................................................. 3-6
3.8 Construction Dust Impact Assessment............................................................ 3-10
3.9 Cumulative Impacts........................................................................................ 3-13
3.10 Residual Impacts............................................................................................ 3-13
3.11 Environmental Monitoring and Audit............................................................... 3-13
3.12 Summary and Conclusions.............................................................................. 3-14
4.1 Background..................................................................................................... 4-1
4.2 Environmental Legislation, Standards and Guidelines......................................... 4-1
4.3 Noise Sensitive Receivers................................................................................. 4-3
4.4 Existing Conditions........................................................................................... 4-4
4.5 Identification of Potential Noise Impacts........................................................... 4-5
4.6 Concurrent Projects......................................................................................... 4-5
4.7 Assessment Approach and Assumptions........................................................... 4-5
4.8 Construction Noise Assessment Results.......................................................... 4-14
4.9 Cumulative Impacts........................................................................................ 4-22
4.10 Residual Impacts............................................................................................ 4-22
4.11 Environmental Monitoring and Audit............................................................... 4-23
4.12 Summary and Conclusions.............................................................................. 4-24
5. WATER
QUALITY IMPACT ASSESSMENT....................................................... 5-1
5.1 Background..................................................................................................... 5-1
5.2 Environmental Legislation, Standards and Guidelines......................................... 5-1
5.3 Sensitive Receivers........................................................................................... 5-8
5.4 Existing Drainage System.................................................................................. 5-9
5.5 Baseline Pollution Loading.............................................................................. 5-10
5.6 Project Specific Baseline Water Quality Monitoring Programme...................... 5-10
5.7 Assessment Methodology............................................................................... 5-24
5.8 Construction Phase Impact Assessment.......................................................... 5-25
5.9 Operational Phase Impact Assessment............................................................ 5-36
5.10 Cumulative Impacts........................................................................................ 5-37
5.11 Residual Impacts............................................................................................ 5-38
5.12 Environmental Monitoring and Audit Requirements.......................................... 5-38
5.13 Summary and Conclusions.............................................................................. 5-38
6. ECOLOGICAL
IMPACT ASSESSMENT.............................................................. 6-1
6.1 Introduction..................................................................................................... 6-1
6.2 Environmental Legislation, Standards and Guidelines......................................... 6-2
6.3 Key Ecological Sensitive Receivers................................................................... 6-4
6.4 Literature Review............................................................................................. 6-5
6.5 Field Survey Methodology............................................................................... 6-9
6.6 Baseline Ecological Conditions....................................................................... 6-12
6.7 Species of Conservation Interest..................................................................... 6-22
6.8 Evaluation of Ecological Importance............................................................... 6-28
6.9 Ecological Impact Assessment Methodology................................................... 6-35
6.10 Potential Construction Phase Ecological Impacts............................................. 6-37
6.11 Construction Phase Overall Impact Evaluation................................................ 6-41
6.12 Pre-Construction and Construction Phase Mitigation Measures....................... 6-59
6.13 Operation Phase Impact Assessment.............................................................. 6-67
6.14 Operation Phase Mitigation Measures............................................................. 6-68
6.15 Cumulative Impacts........................................................................................ 6-68
6.16 Residual Impacts............................................................................................ 6-68
6.17 Environmental Monitoring and Audit Requirements.......................................... 6-68
6.18 Summary and Conclusions.............................................................................. 6-69
6.19 References..................................................................................................... 6-70
7. LANDSCAPE
AND VISUAL IMPACT ASSESSMENT....................................... 7-1
7.1 Introduction..................................................................................................... 7-1
7.2 Environmental Legislation, Standards and Guidelines......................................... 7-2
7.3 Assessment Methodology................................................................................. 7-3
7.4 Review of Planning and Development Control Framework................................ 7-9
7.5 Landscape Baseline Conditions...................................................................... 7-12
7.6 Visual Baseline Conditions.............................................................................. 7-27
7.7 Potential Sources of Landscape and Visual Impacts........................................ 7-35
7.8 Landscape Impact Assessment....................................................................... 7-36
7.9 Visual Impact Assessment.............................................................................. 7-50
7.10 Impact Significance Threshold........................................................................ 7-58
7.11 Mitigation Measures....................................................................................... 7-62
7.12 Residual Impacts............................................................................................ 7-65
7.13 Cumulative Impacts........................................................................................ 7-72
7.14 Environmental Monitoring and Audit............................................................... 7-72
7.15 Summary and Conclusions.............................................................................. 7-73
8.1 Background..................................................................................................... 8-1
8.2 Environmental Legislation, Standards and Guidelines......................................... 8-1
8.3 Objectives of the Cultural Heritage Impact Assessment..................................... 8-4
8.4 Assessment Methodology................................................................................. 8-4
8.5 Archaeological Impact Assessment................................................................... 8-8
8.6 Built Heritage Impact Assessment................................................................... 8-11
8.7 Cumulative Impacts........................................................................................ 8-18
8.8 Residual Impacts............................................................................................ 8-18
8.9 Environmental Monitoring and Audit Requirements.......................................... 8-18
8.10 Summary and Conclusions.............................................................................. 8-18
8.11 References..................................................................................................... 8-19
9.1 Introduction..................................................................................................... 9-1
9.2 Environmental Legislation, Standards and Guidelines......................................... 9-1
9.3 Assessment Methodology................................................................................. 9-3
9.4 Construction Phase Waste Management Assessment........................................ 9-4
9.5 Operational Phase Waste Management Assessment.......................................... 9-9
9.6 Mitigation Measures....................................................................................... 9-10
9.7 Waste Disposal Recommendations................................................................. 9-14
9.8 Potential for
9.9 Cumulative Impacts........................................................................................ 9-15
9.10 Residual Impacts............................................................................................ 9-15
9.11 Environmental Monitoring and Audit............................................................... 9-15
9.12 Summary and Conclusions.............................................................................. 9-15
10. ENVIRONMENTAL
MONITORING AND AUDIT.......................................... 10-1
10.1 Introduction................................................................................................... 10-1
10.2 EM&A Requirements..................................................................................... 10-2
10.3 Air Quality..................................................................................................... 10-2
10.4 Noise............................................................................................................. 10-2
10.5 Water Quality................................................................................................ 10-3
10.6 Ecology......................................................................................................... 10-3
10.7 Landscape and Visual.................................................................................... 10-3
10.8 Cultural Heritage............................................................................................ 10-3
10.9 Waste Management....................................................................................... 10-4
11. IMPLEMENTATION SCHEDULE AND RECOMMENDED MITIGATION MEASURES
11.1 Introduction
12. SUMMARY OF OUTCOMES............................................................................... 12-1
12.1 Introduction................................................................................................... 12-1
13. CONCLUSIONS..................................................................................................... 13-1
13.1 Background................................................................................................... 13-1
13.2 Air Quality Impact.......................................................................................... 13-1
13.3 Noise Impact................................................................................................. 13-1
13.4 Water Quality Impact..................................................................................... 13-1
13.5 Ecological Impact........................................................................................... 13-2
13.6 Landscape and Visual Impact......................................................................... 13-3
13.7 Cultural Heritage............................................................................................ 13-5
13.8 Waste Management....................................................................................... 13-5
TABLES
Table 2.1 Predicted Maximum Flood Depth
of Existing Drainage System
Table 2.2 Key Features of the Alignment
Design Options
Table 2.3 Potential Environmental
Benefits and Dis-benefits of Alternative Drainage Design Options
Table 2.4 Key Components of the
Proposed Works
Table 2.5 Preferred Construction
Methods
Table 2.6 Environmental Benefits and
Dis-benefits of Drain Pipe Construction Methods
Table 2.7 Works Sections and
Construction Works
Table 2.8 Summarised Construction Programme
(Tentative)
Table 2.9 Tentative Construction Plant
Inventory for Site Clearance and Construction of Site Office
Table 2.10 Tentative Construction Plant
Inventory for Cut-and-cover Construction Works
Table 2.11 Tentative Construction Plant
Inventory for Pipe Jacking Construction Works
Table 2.12 Tentative Construction Plant
Inventory for Manholes, Inlets and Outfalls Construction Works and Site Office
Demolition
Table 2.13 Details of Proposed Works Areas
Table 3.1
Table 3.2 EPD Air Quality Monitoring
Data at Tung Chung AQMS (2007 to 2011)
Table 3.3 Representative Air Sensitive
Receivers
Table 3.4 Assumptions for Calculation
of Dust Emission Factors
Table 3.5 Air Quality Monitoring Data
at Tung Chung AQMS Station (Years 2007 to 2011)
Table 3.6 1-hour, 24-hour and Annual
Average Maximum Cumulative Unmitigated TSP Concentrations (mg/m3)
at ASRs (Including Background Level)
Table 3.7 Tier 1 Screening Test: 1-hour
and 24-hour Average Maximum Cumulative Mitigated TSP Concentrations (mg/m3)
at ASRs (Including Background Level)
Table 3.8 Annual Average Maximum
Cumulative Mitigated TSP Concentrations (m gm-3) at ASRs (Including
Background Level)
Table 4.1 Daytime Construction Noise
Limits
Table 4.2 Construction Noise Criteria
for Activities other than Percussive Piling
Table 4.3 Representative Noise Sensitive
Receivers
Table 4.4 PME Identified as Major Noise
Sources for the Unmitigated Scenario
Table 4.5 Specific Plant Inventory for
Construction Works at RP4 / Outfall B for the Unmitigated Scenario
Table 4.6 Assumed Worst
Concurrent Construction Activities for Each Sensitive Receiver
Table 4.7 Predicted Unmitigated
Construction Noise Levels for Representative NSRs
Table 4.8 Mitigated Quiet PMEs
Table 4.9 Noise Attenuation of PMEs
from the Fixed Temporary Noise Barrier for NSR1
Table 4.10 Mitigation Measures and Assumed
Effectiveness for PMEs
Table 4.11 Predicted Mitigated
Construction Noise Levels and Duration at Representative NSRs
Table 4.12 Further Mitigated Plant
Inventory for Activity 4+ with Additional Noise Barrier near NSR5
Table 4.13 Further Mitigated Scenario for
NSR5
Table 4.14 Assessment of Residual Impacts
from Construction Noise
Table 5.1 Water Quality Objectives for
North Western Water Control Zone (NWWCZ)
Table 5.2 Water Quality Objectives for
Southern Supplementary Water Control Zone (SSWCZ)
Table 5.3 Standards for Effluents
Discharged into Group A Inland Waters
Table 5.4 Standards for Effluents Discharged
into Group B Inland Waters
Table 5.5 Baseline Water Quality
Monitoring Stations
Table 5.6 Summary of In-situ
Measurement Parameters
Table 5.7 Summary of Laboratory
Analysis Parameters and Relevant Benchmark Criteria
Table 5.8 Summary of Sampling Programme
Table 5.9 Non-compliance Statistics of
Baseline Water Samples
Table 5.10 Summary of Baseline Water
Quality Monitoring In-situ Results and Suspended Solids
Table 5.11 Summary of Baseline Water
Quality Monitoring Results – Pollution Indicators
Table 5.12 Summary of Baseline Water
Quality Monitoring Results – Nutrient Loadings and Chlorophyll
Table 5.13 Works Area and Nearby Water
Quality Sensitive Receivers
Table 6.1 Area of the Different Habitat
Types within the Study Area
Table 6.2 Summary of the Mammal Species
Recorded During Baseline Surveys
Table 6.3 Summary of the Avifauna
Species Recorded During Baseline Surveys
Table 6.4 Summary of the Herpetofauna
Species Recorded During Baseline Surveys
Table 6.5 Summary of the Floral Species
of Conservation Interest Recorded During Baseline Surveys
Table 6.6 Summary of the Fauna Species
of Conservation Interest Recorded During Baseline Surveys
Table 6.7 Evaluation of Ecological
Value of
Table 6.8 Evaluation of Ecological
Value of Developed Area
Table 6.9 Evaluation of Ecological
Value of Grassland
Table 6.10 Evaluation of Ecological Value
of
Table 6.11 Evaluation of Ecological Value
of Secondary
Table 6.12 Evaluation of Ecological Value
of Shrubland
Table 6.13 Evaluation of Ecological Value
of Stream
Table 6.14 Evaluation of Ecological Value
of Channelised Watercourse
Table 6.15 Evaluation of Ecological Value
of the Project Area
Table 6.16 Summary of the Ecological Value
of Habitats within the Study Area (Descending Order of Importance)
Table 6.17 Estimation of Potential
Terrestrial Habitat Loss within Study and Project Areas
Table 6.18 Overall Impact Evaluation for
Table 6.19 Overall Impact Evaluation for
Developed Area
Table 6.20 Overall Impact Evaluation for
Grassland
Table 6.21 Overall Impact Evaluation for
Table 6.22 Overall Impact Evaluation for
Secondary
Table 6.23 Overall Impact Evaluation for
Shrubland
Table 6.24 Overall Impact Evaluation for
Stream
Table 6.25 Overall Impact Evaluation for
Channalised Watercourse
Table 6.26 Overall Impact to Species of
Conservation Interest
Table 6.27 Summary of Construction Phase
Impacts
Table 6.28 Recommended Planting Species
Table 6.29 Summary
of Pre-Construction and Construction Phase Mitigation Measures
Table 7.1 Relationship between Receptor
Sensitivity and Impact Magnitude in Defining Impact Significance
Table 7.2 Schedule of Administrative
Planning Zones
Table 7.3 Statutory Designations for
Works Sites, and Works Areas
Table 7.4 Schedule of Landscape
Resources
Table 7.5 Summary of Assessment of
Sensitivity of Landscape Resources
Table 7.6 Schedule of Landscape
Character Areas
Table 7.7 Summary of Assessment of
Sensitivity of Landscape Character Areas
Table 7.8 Potential Key Visually
Sensitive Receivers (VSRs)
Table 7.9 Summary of Assessment of
Sensitivity of Visually Sensitive Receivers (VSRs)
Table 7.10 Schedule of Landscape Resources Impacted during
Construction and Operation
Table 7.11 Summary of Magnitude of Impacts
to Landscape Resources before Mitigation
Table 7.12 Summary of Magnitude of Impacts
to Landscape Character Areas before Mitigation
Table 7.13 Magnitude of Impacts on
Visually Sensitive Receivers before Mitigation
Table 7.14 Significance Threshold of
Landscape Resources
Table 7.15 Significance Threshold of
Landscape Character Units
Table 7.16 Significance Threshold of
Visually Sensitive Receivers
Table 7.17 Recommended Construction Phase
Landscape and Visual Mitigation Measures
Table 7.18 Recommended Operational Phase
Landscape and Visual Mitigation Measures
Table 7.19 Compensatory Tree Planting and
Greening
Table 7.20 Significance of Residual
Landscape Impacts
Table 7.21 Significance of Residual Visual
Impacts
Table 8.1 Summary of Archaeological
Potential of the Study Area
Table 8.2 Impact Assessment for Built
Heritage Resources (Works Sections 1, 2 and 3)
Table 8.3 Impact Assessment for Built
Heritage Resources (Works Sections 4 and 5)
Table 8.4 Identification of Impacts to
Built Heritage Resources (Works Section 6)
Table 9.1 Summary of C&D Materials
Arising from the Project
Table 9.2 Recommended Waste Disposal
Sites
Table 10.1 Summary of EM&A
Requirements
Table 11.1 Implementation Schedule for
Environmental Mitigation Measures
Table 12.1 Summary
of Key Environmental Outcomes
Volume 2 of 3
FIGURES
Figure 1.1 General Layout Plan
Figure 2.1 Existing Drainage System
Figure 2.2 Location of Flooding Incidents
Figure 2.3 Alternative Drainage
Improvement Schemes
Figure 2.4 Alternative Alignment between
Ngong Ping 360 Terminal and the Columbarium area
Figure 2.5 General Layout of the
Preferred Alignment
Figure 2.6a Drainage Alignment (Sheet 1 of
4)
Figure 2.6b Drainage Alignment (Sheet 2 of
4)
Figure 2.6c Drainage Alignment (Sheet 3 of
4)
Figure 2.6d Drainage Alignment (Sheet 4 of
4)
Figure 2.7a General Arrangement of Intake A
Figure 2.7b General Arrangement of Intake B
Figure 2.7c General Arrangement of Outfall A
Figure 2.7d General Arrangement of Intake C
Figure 2.7e General Arrangement of Outfall B
Figure 2.8a Original Construction Programme
(Tentative)
Figure 2.8b Preferred Construction Programme
(Tentative)
Figure 2.10a Design Layout of Tung Chung Cable
Car Project - Diversion of the Ngong Ping Stream
Figure 2.10b Design Section of Tung Chung Cable
Car Project - Diversion of the Ngong Ping Stream
Figure 3.1 Locations of Representative Air Sensitive Receivers
Figure 4.1 Locations of Representative Noise Sensitive Receivers
(Sheet 1 of 3)
Figure 4.2 Locations of Representative Noise Sensitive
Receivers (Sheet 2 of 3)
Figure 4.3 Locations of Representative Noise Sensitive
Receivers (Sheet 3 of 3)
Figure 4.4 Cross Section Between RP4 and NSR1
Figure 4.5 Extent of Box Culvert Work Where Exceedances
anticipated near NSR5
Figure 4.6 Illustration of Additional Noise Barrier at NSR5
Figure 5.1 Water Quality Impact Study Area and Water Control
Zones
Figure 5.2 Ngong Ping Water Gathering Grounds
Figure 5.3 Water Quality Monitoring Stations
Figure 6.1 Ecology Study Area and Nearby
Areas of Conservation Interest
Figure 6.2 Ecology Survey Plan
Figure 6.3 Habitat Map (Sheet 1 of 2)
Figure 6.4 Habitat Map (Sheet 2 of 2)
Figure 6.5a Locations of Species of
Conservation Interest
Figure 6.5b Locations of Species of
Conservation Interest – Works Section 6
Figure 6.6 Photographs of Representative
Habitats within the Project and Study Areas
Figure 6.7 Photographs of the Species of
Conservation Importance
Figure 7.1 Aerial Photo of Ngong Ping Showing Study Area and
Visual Envelope
Figure 7.2 Planning and Development Framework
Figure 7.3 Physical and Cultural Landscape Resources
Figure 7.4 Landscape Character Areas
Figure 7.5 Potential Visually Sensitive Receivers
Figure 7.6 Photographic Record of Identified Landscape Resources
Figure 7.7 Photographic Record of Landscape Character Areas
Figure 7.8 Photographic Record of Identified Visual Receivers
Figure 7.9a Indicative Landscape and Visual Mitigation Measures
(Sheet 1 of 5)
Figure 7.9b Indicative Landscape and Visual Mitigation Measures
(Sheet 2 of 5)
Figure 7.9c Indicative Landscape and Visual Mitigation Measures
(Sheet 3 of 5)
Figure 7.9d Indicative Landscape and Visual Mitigation Measures
(Sheet 4 of 5)
Figure 7.9e Indicative Landscape and Visual Mitigation Measures
(Sheet 5 of 5)
Figure 7.10 Residual Landscape Impacts During Construction
Figure 7.11 Residual Visual Impacts During Construction
Figure 7.12 Residual Impacts at Day 1
Figure 7.13 Residual Impacts at Year 10
Figure 8.1 Map showing the location of the Ngong Ping- Shek
Pik Trackway
Figure 8.3 1939 map showing an agricultural area to the south
of Ngong Ping Plateau
Figure 8.4 1969 map showing agricultural fields between the
houses of the Monastery
Figure 8.6 Location and direction of photos taken during the
archaeological field visit
Figure 8.10 Map showing the location of recorded built heritage
resources
Figure 8.11 Map showing the location of recorded built heritage
resource NP27
Figure 8.12 Map showing the location of
recorded built heritage resources NP26
Figure 8.13 Map showing the location of
recorded built heritage resource NP12, NP17-19, and NP 25
Figure 8.14 Map showing the location of
recorded built heritage resource NP28
Figure 8.16 Map showing the location of
recorded built heritage resource NP01-02, and NP04
PLATES
Plate 8.3a Eastern Part of the Study Area. View to the East of
the last part of Works Section 1
Plate 8.3c Central Part of the Study Area. Stratigraphy at
open cut recorded within the area
Plate 8.3e Western Part of the Study Area. Rock debris along
the road
Volume 3 of 3
APPENDICES
Appendix A2 Location
Plan of First Aid Measures
Appendix A3.1 Short-term
Measures along Po Ngong Drive
Appendix A3.2 Short-term
Measures near Po Lin Monastery Senior Master’s House
Appendix A4.1 Longitudinal
Profile of the Proposed Drainage System (Sheet 1/2)
Appendix A4.2 Longitudinal
Profile of the Proposed Drainage System (Sheet 2/2)
Appendix A4.3 Geological
Map – Ngong Ping
Appendix A4.4 Arrangement
of the Proposed Intake A
Appendix A4.5 Arrangement
of the Proposed Intake B
Appendix A4.6 Arrangement
of the Proposed Intake C
Appendix A4.7 Arrangement
of the Proposed Outfall A
Appendix A4.8 Arrangement
of the Proposed Outfall B
Appendix A5 Indicative
Construction Sequence
Appendix B1 Inventory Confirmation from DSD
Appendix B3 Calculation
of Watering Efficiency
Appendix B4 Sample Calculation of the Results of ASRs
Appendix C1 Identified
Representative Noise Sensitive Receivers
Appendix C2 Lists
of Notional Sources and Respective Slant Distances from NSRs
Appendix C3 Plant
Inventory (Unmitigated Scenario)
Appendix C4 Construction
Noise Assessment (Unmitigated Scenario)
Appendix C5 Brochure for the Husqvarna 316
Electric Chain Saw
Appendix C6 Plant
Inventory (Mitigated Scenario)
Appendix C7 Construction
Noise Assessment (Mitigated Scenario)
Appendix D1 Project
Specific Water Quality Monitoring Proposal
Appendix D2 Project
Specific Water Quality Monitoring Results
Appendix D3 WSD
Condition of Working within Water Gathering Ground
Appendix F1 Tree
Survey Report
Appendix G1 Built
Heritage Catalogue
Appendix G2 Built
Heritage Resources at Ngong Ping (Ngong Ping Sewage Treatment Works EIA)
Appendix G3 Built
Heritage Resources at Ngong Ping (Tung Chung Cable Car EIA)
Appendix H1 Reconnaissance Site Inspection Records for Potential
Land Contamination