Contents
1.1........ General........................................................................................................... 1-1
1.2........ Justification
for the Project............................................................................ 1-1
1.3........ Selection of the Recommended Preferred
Option for the Project............... 1-2
1.4........ Consequential Development Arising from the Project................................. 1-5
1.5........ Comment from Relevant Public Bodies........................................................ 1-7
1.6........ Environmental
Conditions in Absence of Improved Road........................... 1-7
1.7........ Benefits of the Improved Road..................................................................... 1-8
1.8........ Detailed
Environmental Impact Assessment................................................ 1-8
1.9........ Structure
of this Report............................................................................... 1-10
2.1........ Scope of
the
Project....................................................................................... 2-1
2.2........ Design
Standard of the Project...................................................................... 2-2
2.3........ Description of the Project.............................................................................. 2-2
2.3.1........ Layout
of the Proposed Road Improvement...................................... 2-2
2.3.2........ Width of Proposed Road Improvement............................................. 2-4
2.3.3........ Elevated
Structures........................................................................... 2-5
2.3.4........ Retaining Walls................................................................................. 2-6
2.3.5........ Junction
with South Lantau Road and Bus-Bay Facilities................... 2-6
2.3.6........ Bus Laybys and Passing Laybys....................................................... 2-6
2.3.7........ Combined Cycle Track/Maintenance Access
Track of the Special Drainage Pipeline between Lung Tseng Tau and Shek Mun Kap
Road....................................... 2-7
2.3.8........ Miscellaneous
Facilities..................................................................... 2-7
2.3.9........ Existing Man-made Slope Remediation Works.................................. 2-7
2.3.10...... Haul Roads and Works Areas.......................................................... 2-8
2.3.11...... Natural Slope Stabilisation Works.................................................... 2-9
2.3.12...... Detailed Ground Investigation......................................................... 2-10
2.3.13...... Blasting.......................................................................................... 2-10
2.4........ Use of Obsolete Sections of Old Road............................................................ 2-10
2.5........ Project Cost and Programme.......................................................................... 2-11
2.6........ Proposed Traffic Management Measures......................................................... 2-11
2.7........ Construction
Activities and Equipment ............................................................ 2-11
2.7.1........ Key Construction Activities............................................................ 2-11
2.7.2........ Construction Equipment.................................................................. 2-12
2.8........ Operational Traffic Flows................................................................................ 2-15
3 ENVIRONMENTAL LEGISLATION, STANDARDS AND
GUIDELINES
3.1........ Environmental Impact Assessment Ordinance............................................. 3-1
3.2........ Air Quality...................................................................................................... 3-1
3.3........ Noise............................................................................................................... 3-2
3.3.1........ Construction Noise Criteria During Non-restricted Hours.................. 3-2
3.3.2........ Construction
Noise Criteria During Restricted Hours......................... 3-2
3.3.3........ Road Traffic Noise........................................................................... 3-4
3.4........ Water
Quality................................................................................................. 3-4
3.4.2........ Inland Waters - Surface Waters........................................................ 3-5
3.5........ Waste Management....................................................................................... 3-8
3.6.1........ Environmental Impact Assessment Ordinance.................................... 3-9
3.6.3........ Hong Kong Planning Standards and Guidelines Chapter 10 (Conservation) 3-9
3.6.4........ Forests and Countryside Ordinance................................................ 3-10
3.6.5........ Wild Animals Protection Ordinance................................................ 3-10
3.7.1........ Environmental Impact
Assessment Ordinance.................................. 3-10
3.8.1........ Chlorine
Hazard and Dangerous Goods Classification..................... 3-11
3.8.3........ Hazard Assessment........................................................................ 3-11
3.9.1........ Environmental
Impact Assessment Ordinance.................................. 3-12
3.9.2........ Hong Kong Planning Standards and Guidelines............................... 3-12
3.9.3........ Antiquities and Monuments Ordinance............................................ 3-13
3.9.4........ Cultural Heritage............................................................................ 3-13
4.1........ Sensitive
Receivers....................................................................................... 4-1
4.2........ Background
Air Quality................................................................................. 4-2
4.3........ Construction Phase Assessment................................................................... 4-2
4.3.2........ Construction Air Quality Assessment................................................ 4-3
4.3.3........ Mitigation Measures During Construction.......................................... 4-4
4.3.4........ Slope Stabilisation and Detailed Ground Investigation........................ 4-6
4.4.1........ Assessment Methodology................................................................. 4-6
4.7........ References..................................................................................................... 4-8
5 NOISE
5.1........ Identified Sensitive Receivers...................................................................... 5-1
5.2........ Baseline
Conditions....................................................................................... 5-3
5.3........ The Proposed
Scheme.................................................................................... 5-3
5.3.2........ Predicted Traffic Flows.................................................................... 5-9
5.4........ Construction Noise Impact Assessment....................................................... 5-9
5.4.1........ Assessment
Methodology................................................................. 5-9
5.4.2........ Assessment Findings....................................................................... 5-10
5.4.3........ Construction Mitigation Measures................................................... 5-16
5.4.4........ Residual Construction Impacts........................................................ 5-23
5.5........ Operational Noise Impact Assessment....................................................... 5-23
5.5.1........ Model Application.......................................................................... 5-23
5.5.2........ Noise Criteria................................................................................. 5-23
5.5.3........ Modelling
Results........................................................................... 5-24
5.5.4........ Operational
Mitigation Measures.................................................... 5-28
5.5.5........ Residual
Operational Impacts......................................................... 5-35
5.6........ Residual
Impacts.......................................................................................... 5-35
5.7........ Environmental
Monitoring and Audit.......................................................... 5-36
6.1........ Existing Water Quality.................................................................................. 6-1
6.2........ Assessment
Methodology............................................................................. 6-2
6.3........ Construction
Water Quality Impacts............................................................ 6-3
6.3.1........ General............................................................................................ 6-3
6.3.2........ Potential Surface Water Quality Impacts........................................... 6-3
6.3.3........ Construction Site Runoff................................................................... 6-3
6.3.4........ Stream Modifications...................................................................... 6-11
6.3.5........ Stabilisation of Unstable Boulders................................................... 6-16
6.3.6........ Detailed Ground Investigation......................................................... 6-17
6.3.7........ Remediation of Existing Man-made Slopes...................................... 6-18
6.3.8........ Construction Waste Materials......................................................... 6-18
6.3.9........ Waste Water Discharges................................................................ 6-19
6.3.10...... Construction Mitigation Measures................................................... 6-19
6.4........ Operational
Water Quality Impacts............................................................ 6-23
6.4.2........ Accidental Spillage......................................................................... 6-27
6.4.3........ Operational
Mitigation Measures.................................................... 6-30
6.5........ Residual
Impacts.......................................................................................... 6-30
6.6 ....... Environmental
Monitoring and Audit.......................................................... 6-31
6.7........ References................................................................................................... 6-31
7.1........ Background.................................................................................................... 7-1
7.2........ Baseline Conditions....................................................................................... 7-1
7.3........ Assessment Methodology............................................................................. 7-1
7.4........ Construction
Waste Impacts......................................................................... 7-2
7.4.1........ Waste Types.................................................................................... 7-2
7.4.2........ Excavated Material........................................................................... 7-2
7.4.3........ Construction and Demolition Waste.................................................. 7-5
7.4.4........ Chemical Waste............................................................................... 7-7
7.4.5........ General
Refuse................................................................................. 7-8
7.4.6........ Sewage............................................................................................ 7-8
7.5........ Waste
Management Mitigation Measures.................................................. 7-8
7.6........ Waste
Disposal Recommendations............................................................. 7-11
7.7
....... Residual
Impacts.......................................................................................... 7-11
7.8........ Environmental Monitoring and Audit.......................................................... 7-11
8.1........ Introduction.................................................................................................... 8-1
8.1.1........ Objectives
of the Ecological Monitoring............................................ 8-1
8.1.2........ Study Area....................................................................................... 8-1
8.2........ Literature Review.......................................................................................... 8-1
8.2.2........ Fish.................................................................................................. 8-2
8.2.3........ Avifauna........................................................................................... 8-3
8.2.4........ Herpetofauna................................................................................... 8-3
8.2.5........ Mammals......................................................................................... 8-4
8.2.6........ Insects (Dragonflies and Butterflies).................................................. 8-4
8.2.7........ Vegetation........................................................................................ 8-5
8.3........ Field Survey Methodology............................................................................ 8-5
8.3.2........ Fish.................................................................................................. 8-6
8.3.3........ Avifauna........................................................................................... 8-6
8.3.4........ Reptiles and Amphibians................................................................... 8-8
8.3.5........ Mammals......................................................................................... 8-9
8.3.6........ Insects............................................................................................. 8-9
8.3.7........ Habitats and Vegetation.................................................................. 8-11
8.3.8........ Intertidal Survey (Pui O Wan)......................................................... 8-12
8.4........ Baseline
Ecological Conditions................................................................... 8-12
8.4.1........ Habitats......................................................................................... 8-12
8.4.2........ Fauna Background......................................................................... 8-18
8.4.3........ Fish................................................................................................ 8-18
8.4.4........ Avifauna......................................................................................... 8-20
8.4.5........ Reptiles.......................................................................................... 8-23
8.4.6........ Amphibians.................................................................................... 8-25
8.4.7........ Mammals....................................................................................... 8-27
8.4.8........ Dragonflies..................................................................................... 8-28
8.4.9........ Butterflies....................................................................................... 8-31
8.4.10...... Vegetation...................................................................................... 8-40
8.4.11...... Marine Intertidal Survey................................................................. 8-47
8.4.12...... Presence of Species of
Conservation Interest and Faunal Diversity.. 8-47
8.5........ Habitat
Quality............................................................................................. 8-63
8.5.2........ Secondary Woodland..................................................................... 8-63
8.5.3........ Plantation Woodland...................................................................... 8-64
8.5.4........ Tall Shrubland................................................................................ 8-65
8.5.5........ Shrubland-Grassland Mosaic.......................................................... 8-65
8.5.6........ Streams and Riparian...................................................................... 8-66
8.5.7........ Grassland....................................................................................... 8-67
8.5.8........ Freshwater Marsh (Fong Yuen Marsh)........................................... 8-68
8.5.9........ Wasteland...................................................................................... 8-68
8.5.10...... Agricultural Land............................................................................ 8-69
8.5.11...... Village Area................................................................................... 8-69
8.5.12...... Vegetation...................................................................................... 8-70
8.5.13...... Marine Intertidal Survey (Pui O Wan)............................................. 8-70
8.5.14...... Overall Evaluation.......................................................................... 8-71
8.6........ Ecological
Impact Assessment Methodology............................................. 8-72
8.7........ Construction Phase Ecological Impact
Assessment................................... 8-73
8.7.2........ Secondary Woodland..................................................................... 8-75
8.7.3........ Plantation Woodland...................................................................... 8-78
8.7.4........ Tall Shrubland................................................................................ 8-79
8.7.5........ Shrubland-grassland mosaic............................................................ 8-80
8.7.6........ Grassland....................................................................................... 8-81
8.7.7........ Stream and riparian A (relatively high base flow): Tung Chung Stream, stream Nos. 15, 18, 19, 21, 23, 24, 25, 26, 27, 32, 35, 40, 41, 42, 43................................ 8-81
8.7.8........ Tung Chung Stream........................................................................ 8-88
8.7.9........ Cheung Sha Stream........................................................................ 8-88
8.7.10...... Cheung Sha Sheung Tsuen Stream (Stream 40)............................... 8-89
8.7.11...... Stream and riparian B (relatively low base flow): stream nos. 1-14, 16, 17, 20, 22, 28-31, 33, 34, 36-39, 44................................................................................ 8-89
8.7.12...... Freshwater Marsh (Fong Yuen)...................................................... 8-90
8.7.13...... Village Area................................................................................... 8-91
8.7.14...... Agricultural Land............................................................................ 8-91
8.7.15...... Wasteland...................................................................................... 8-91
8.7.16...... Impacts on Key Species................................................................. 8-91
8.7.17...... Slope remediation works on obsolete sections of existing Tung Chung Road 8-95
8.7.18...... Nighttime Working Activities.......................................................... 8-96
8.7.19...... Summary of Construction Phase Impacts........................................ 8-97
8.8........ Operation Phase Unmitigated Impacts....................................................... 8-99
8.8.2........ Disturbance.................................................................................... 8-99
8.8.3........ Barrier Effects.............................................................................. 8-101
8.8.4........ Mortality due to Physical Impact with Vehicles.............................. 8-102
8.8.5........ Pollution Emission from Vehicles................................................... 8-103
8.8.6........ Summary of Operational Phase Impacts........................................ 8-104
8.9........ Impact
Mitigation Measures..................................................................... 8-105
8.9.1........ Construction
Phase Impact Mitigation........................................... 8-105
8.9.2........ Operation Phase Impact Mitigation............................................... 8-111
8.10...... Residual
Impacts........................................................................................ 8-112
8.11...... Environmental
Monitoring and Audit........................................................ 8-119
8.12...... Conclusions................................................................................................. 8-119
8.13...... References................................................................................................. 8-120
9 LANDSCAPE AND VISUAL IMPACTS
9.1........ Background.................................................................................................... 9-1
9.2........ Scope and Content
of the Study.................................................................... 9-1
9.2.1........ Project Description........................................................................... 9-1
9.2.2........ Limits of the Study Area................................................................... 9-4
9.3........ Assessment Methodology............................................................................. 9-4
9.4........ Planning and Development Control Framework........................................... 9-8
9.4.1........ Study Area....................................................................................... 9-8
9.4.2........ Existing Use and Potential Impacts.................................................... 9-9
9.4.3........ Existing Character of Adjacent Areas.............................................. 9-11
9.4.4........ Planned and Committed Development............................................. 9-12
9.4.5........ Landscape Planning Destination...................................................... 9-12
9.4.6........ Summary ....................................................................................... 9-13
9.5........ Baseline Study.............................................................................................. 9-14
9.5.1........ Physical Landscape Resources....................................................... 9-14
9.5.2........ Human and Cultural Landscape Resources...................................... 9-15
9.5.3........ Landscape Character Zones........................................................... 9-16
9.5.4........ Baseline Visual Conditions.............................................................. 9-18
9.5.5........ Key Views and Visual Receivers.................................................... 9-18
9.6........ Construction Stage Impact Assessment..................................................... 9-21
9.6.1........ Potential Sources of Impact during the Construction Stage............... 9-21
9.6.2........ Nature and Magnitude of Landscape Impacts during the Construction Stage 9-22
9.6.3........ Nature and Magnitude of Visual Impacts during the Construction Stage 9-25
9.6.4........ Mitigation Measures during the Construction Stage.......................... 9-35
9.6.5........ Prediction of Significance of Landscape Impacts during the Construction Stage 9-36
9.6.6........ Prediction of Significance
of Visual Impacts during the Construction Stage 9-36
9.7 ....... Operational
Impacts..................................................................................... 9-36
9.7.1........ Potential Sources of Impact during the Operational Stage................ 9-36
9.7.2........ Nature and Magnitude of Landscape Impacts during the Operational Stage 9-36
9.7.3........ Nature and Magnitude of Visual Impacts during the Operational Stage 9-38
9.7.4........ Mitigation Measures during the Operational Stage........................... 9-41
9.7.5........ Prediction of Significance
of Landscape Impacts during the Operational Stage 9-48
9.7.6........ Prediction of Significance
of Visual Impacts during the
Operational Stage 9-48
9.8........ Residual Impacts.......................................................................................... 9-56
9.9........ Conclusions................................................................................................... 9-56
9.10...... Recommendations........................................................................................ 9-57
9.11...... Environmental Monitoring and Audit.......................................................... 9-57
10.1...... Objectives..................................................................................................... 10-1
10.2...... Scope of Work.............................................................................................. 10-1
10.3...... The Study Area............................................................................................ 10-2
10.3.1...... Background................................................................................... 10-2
10.3.2...... Safety
Facilities.............................................................................. 10-3
10.4...... Input Data..................................................................................................... 10-3
10.4.1...... Meteorological Data....................................................................... 10-3
10.4.2...... Population...................................................................................... 10-4
10.5...... Hazard Identification.................................................................................... 10-7
10.5.1...... Introduction.................................................................................... 10-7
10.5.2...... Recorded Chlorine Releases in Hong Kong..................................... 10-7
10.5.3...... Types of Chlorine Release.............................................................. 10-9
10.5.4...... Internal Release Cases.................................................................... 10-9
10.5.5...... External Release Cases................................................................. 10-10
10.6...... Frequency
Estimation................................................................................ 10-12
10.6.1...... Indoor Failure Cases.................................................................... 10-12
10.6.2...... External Failure Cases.................................................................. 10-14
10.6.3...... Summary of Failure Frequencies................................................... 10-17
10.6.4...... Variation of Release Frequency with Time Period.......................... 10-19
10.7...... Consequence and Impact
Analysis............................................................ 10-19
10.7.1...... Models Used............................................................................... 10-19
10.7.2...... Risk Assessment Parameters........................................................ 10-19
10.8...... Results........................................................................................................ 10-20
10.8.1...... Individual Risks............................................................................ 10-20
10.8.2...... Societal Risks............................................................................... 10-21
10.9...... Residual
Impacts........................................................................................ 10-21
10.10.... Conclusions................................................................................................. 10-22
10.11.... References................................................................................................. 10-22
11 CULTURAL HERITAGE IMPACT ASSESSMENT
11.1...... Objectives of Cultural Heritage Impact Assessment................................. 11-1
11.2...... Assessment Methodology........................................................................... 11-1
11.3...... Heritage Baseline........................................................................................ 11-2
11.3.1...... Existing Development/Impacts in the Study Area............................. 11-2
11.3.2...... Geological
and Topographical Background..................................... 11-2
11.3.3...... Archaeological Background of the Study Corridor.......................... 11-3
11.4...... Field Evaluation............................................................................................ 11-4
11.4.1...... Background................................................................................... 11-4
11.4.2...... Scope and
Methodology of Field Surveys....................................... 11-4
11.5...... Archaeological Field Survey Results and Assessment.............................. 11-6
11.5.1...... Background................................................................................... 11-6
11.5.2...... Surface Field Scan......................................................................... 11-6
11.5.3...... Auger Testing................................................................................. 11-7
11.5.4...... Test Pit Excavations....................................................................... 11-8
11.5.5...... Archaeological Impact Assessment............................................... 11-15
11.5.6...... Mitigation Recommendations........................................................ 11-16
11.6...... Historical
Buildings and Structures Survey and Assessment.................. 11-17
11.6.2...... Cultural
Heritage Structures Assessment....................................... 11-17
11.6.3...... Historical Land Use Patterns and Cultural Landscape Features...... 11-21
11.6.4...... Burial Associated Sites................................................................. 11-22
11.6.5...... Mitigation Recommendations........................................................ 11-22
11.7...... Summary
and Conclusions......................................................................... 11-25
11.7.1...... Archaeological Evaluation............................................................. 11-25
11.7.2...... Cultural
Heritage.......................................................................... 11-25
11.8...... Residual Impacts........................................................................................ 11-26
11.9...... Environmental Monitoring and Audit........................................................ 11-26
11.10.... References................................................................................................. 11-26
12 CUMULATIVE IMPACT ASSESSMENT
12.1...... Introduction.................................................................................................. 12-1
12.2...... Air Quality Assessment............................................................................... 12-1
12.2.2...... Operational Phase.......................................................................... 12-2
12.3...... Noise............................................................................................................. 12-3
12.3.1...... Construction Phase......................................................................... 12-3
12.3.2...... Operational Phase.......................................................................... 12-5
12.4...... Water Quality............................................................................................... 12-6
12.4.2...... Operational Phase.......................................................................... 12-6
12.5...... Waste Management..................................................................................... 12-7
12.6...... Ecology......................................................................................................... 12-7
12.7...... Landscape and
Visual.................................................................................. 12-8
12.8...... Conclusions................................................................................................... 12-9
13 ENVIRONMENTAL
MONITORING AND AUDIT
13.1...... Introduction.................................................................................................. 13-1
13.2...... EM&A Requirements.................................................................................. 13-2
13.3...... Baseline Monitoring.................................................................................... 13-8
13.3.1...... Noise............................................................................................. 13-8
13.3.2...... Air Quality..................................................................................... 13-8
13.3.4...... Water Quality................................................................................. 13-8
13.3.5...... Landscape and Visual Resources.................................................... 13-8
13.3.6...... Cultural Heritage............................................................................ 13-8
13.4...... Construction Phase
Impact Monitoring...................................................... 13-9
13.4.1...... Action and Limit Levels.................................................................. 13-9
13.4.2...... Noise............................................................................................. 13-9
13.4.3...... Air Quality................................................................................... 13-10
13.4.4...... Water Quality............................................................................... 13-11
13.4.5...... Ecology........................................................................................ 13-12
13.4.6...... Landscape and Visual................................................................... 13-13
13.4.7...... Waste.......................................................................................... 13-13
13.4.8...... Cultural Heritage.......................................................................... 13-13
13.5...... Operational Phase
Impact Monitoring ..................................................... 13-13
13.6...... EM&A Responsibilities............................................................................. 13-14
13.7...... Reporting.................................................................................................... 13-15
13.8...... Implementation Schedules......................................................................... 13-15
14.1...... Background.................................................................................................. 14-1
14.2...... Scope of the
Assessment............................................................................. 14-1
14.3...... Summary
of Key Findings and
Recommendations..................................... 14-2
14.3.1...... Air Quality..................................................................................... 14-2
14.3.2...... Noise............................................................................................. 14-3
14.3.3...... Water Quality................................................................................. 14-4
14.3.4...... Waste............................................................................................ 14-7
14.3.5...... Ecology.......................................................................................... 14-9
14.3.6...... Landscape and Visual................................................................... 14-10
14.3.7...... Hazard......................................................................................... 14-12
14.3.8...... Cultural Heritage.......................................................................... 14-12
14.3.9...... Environmental Monitoring and Audit............................................. 14-13
14.3.10.... Cumulative Assessment................................................................ 14-14
14.3.11.... Overall Conclusions...................................................................... 14-14
15......... SUMMARY OF ENVIRONMENTAL OUTCOMES........................................ 15-1
Tables
Section 1
Table 1.1 ....... Proposed Residential Provision along South Lantau Coast and
Mui Wo............. 1-5
Section 2
Table 2.1........ Predicted
Construction Equipment for
Roadworks Earthworks........................ 2-12
Table 2.2........ Predicted Construction Equipment for Roadworks Retaining Wall Construction 2-13
Table 2.3........ Predicted
Construction Equipment for Roadworks Pavement Construction....... 2-13
Table 2.4........ Predicted Construction
Equipment for Bridgeworks Foundation
....................... Construction................................................................................................... 2-13
Table 2.5........ Predicted Construction
Equipment for Bridgeworks Deck Construction........... 2-14
Table 2.6........ Typical Equipment Requirements for Slope Stabilisation Works....................... 2-14
Table 2.7........ Typical Equipment Requirements for Slope Remediation
Earthworks................ 2-14
Table 2.8........ Typical
Equipment Requirements for Slope
Remediation Soil/Rock Nailing Works 2-15
Table 2.9........ Predicted Construction Equipment for the Noise
Barriers Construction............. 2-15
Table 2.10...... Predicted Year 2021 Peak Hour Traffic Flows by Vehicle Type...................... 2-16
Table 2.11...... Traffic Figures Assumed for EIA..................................................................... 2-17
Section 3
Table 3.1........ Hong Kong Air
Quality Objectives ................................................................... 3-1
Table 3.2........ Recommended Construction Noise Levels......................................................... 3-2
Table 3.3........ Acceptable Noise Levels
for Percussive Piling................................................... 3-3
Table 3.4........ Acceptable Noise Level during the Construction Phase (Restricted Periods)....... 3-3
Table 3.5........ Acceptable Road Traffic Noise Levels.............................................................. 3-4
Table 3.6........ Beneficial Uses Applicable to Southern and North Western Waters WCZ.......... 3-6
Table 3.7........ Water Quality Parameters to be Controlled for Specific
Marine Related
....................... Beneficial
Uses................................................................................................. 3-7
Table 3.8........ Marine Water
Quality Objectives for the Southern and North Western Water
Section 4
Table 4.1.... Air
Sensitive Receivers.......................................................................................... 4-1
Table 4.2.... Particle Size Distribution........................................................................................ 4-3
Table 4.3.... 1-hour and 24-Hour Maximum TSP Concentrations at ASRs (including
background) 4-4
Table 4.4.... EURO III Emission Factors in 2011....................................................................... 4-7
Table 4.5 ... 1-hour
and 24-Hour Maximum RSP and NO2
Concentrations at ASRs (including background) 4-9
Section 5
Table 5.1.... Noise Sensitive
Receivers...................................................................................... 5-1
Table 5.2.... Equipment Scenarios............................................................................................. 5-4
Table 5.3.... Typical Equipment Requirement for Road
Construction.......................................... 5-5
Table 5.4 ... Typical Equipment Requirement for Bridge Construction......................................... 5-6
Table 5.5 ... Typical
Equipment Requirement for Slope
Stabilisation Works................................ 5-7
Table 5.6 ... Typical Equipment Requirement for Slope Remediation Works............................... 5-8
Table 5.7.... Typical Equipment Requirement for the Construction of Permanent Noise Barrier in Tung Chung Valley 5-8
Table 5.8a.. Maximum
Noise Levels (dB(A) during Road
Construction without Mitigation........ 5-10
Table 5.8b.. Maximum Noise Levels (dB(A) during Bridge Construction without Mitigation...... 5-11
Table 5.8c.. Maximum Noise Levels (dB(A) during Slope Stabilisation without Mitigation........ 5-11
Table 5.8d.. Maximum Noise
Levels (dB(A) during Slope Remediation without Mitigation........ 5-12
Table 5.8e.. Maximum Noise Levels (dB(A) during Construction of Permanent Noise Barrier in Tung Chung Valley without Mitigation............................................................................................................ 5-12
Table 5.9.... Lmax dB(A) of Common
Helicopter Types in Hong Kong.................................... 5-13
Table 5.10.. Predicted Helicopter Noise.................................................................................. 5-14
Table 5.11.. Recommended Mitigation Measures for the Noisy Equipment during Road Construction and Bridge Construction........................................................................................................ 5-16
Table 5.12.. Recommended Mitigation Measures for the Noisy Equipment during
Permanent Noise Barrier Construction........................................................................................................................... 5-17
Table 5.13.. Maximum Noise Levels (dB(A) during Road Construction with Mitigation............ 5-19
Table 5.14.. Maximum
Noise Levels (dB(A) during Bridge
Construction with Mitigation........... 5-20
Table 5.15.. Maximum Noise Levels (dB(A)) during Construction of Permanent Noise Barrier in Tung Chung Valley With Noise Mitigation.................................................................................................. 5-20
Table 5.16.. Summary
of Dwelling Affected by Adverse
Construction Noise and Benefitting from
Mitigation Measures 5-22
Table 5.17.. Predicted
Traffic Noise Levels, L10 dB(A)
at the Noise Sensitive Receivers During Operation Phase without Mitigation
Measures in Year 2021....................................................................... 5-24
Table 5.18.. Predicted Traffic Noise
Levels, L10 dB(A) at the future Noise Sensitive Receivers of the Cheung Sha Sale Sites During
Operation Phase without Mitigation Measures in Year 2021.............. 5-25
Table 5.19.. Additional Noise Sensitive Receivers at Tung Chung............................................. 5-26
Table 5.20.. Predicted Traffic Noise
Levels, L10 dB(A) at the Additional Noise Sensitive Receivers During Operation Phase without Mitigation Measures
in Year 2021........................................................... 5-27
Table 5.21.. Summary of Direct Mitigation Measures............................................................... 5-31
Table 5.22.. Predicted
Traffic Noise Levels, L10 dB(A) at the Additional Noise Sensitive Receivers During Operation Phase with Mitigation
Measures in Year 2021................................................................ 5-31
Table 5.23.. Predicted Traffic Noise Levels at the Noise Sensitive Receivers in Sale
Sites During Operation Phase with
a perimeter Wall incorporated into the Design in Year 2021.................................... 5-33
Table 5.24.. Summary
of Dwelling Affected by Adverse
Noise and Benefitting from Mitigation Measures during the Operational Phase............................................................................................... 5-34
Section 6
Table 6.1.... Summary
of Works on Streams........................................................................... 6-12
Table 6.2.... Runoff Quality for Urban Highways...................................................................... 6-23
Table 6.3.... Water Quality in Tung Chung River...................................................................... 6-24
Table 6.4.... Spill Response Key Responsibilities..................................................................... 6-28
Section 7
Table 7.1.... Volumes of
Cut and Fill Material............................................................................ 7-3
Table 7.2.... Estimated Surplus Excavated Material.................................................................... 7-3
Table 7.3.... Summary of C&D Material Arisings....................................................................... 7-6
Table 7.4.... Recommended Waste Disposal Sites................................................................... 7-11
Section 8
Table 8.1 ... Coverage of the Different Habitat Types Within the Study Area............................ 8-12
Table 8.2.... Fish Species Recorded in the Study Area, June 2001 to January 2002.................. 8-18
Table 8.3.... Bird Species Recorded in the Study Area, May 2001 to January 2002................. 8-21
Table 8.4.... Reptile Species Recorded in the Study Area, June to October 2001..................... 8-23
Table 8.5.... Amphibian Species Recorded in the Study Area, June to September 2001............ 8-25
Table 8.6.... Dragonfly
Species Recorded in the Study
Area, June and July 2001..................... 8-28
Table 8.7 ... Dragonfly Species Recorded in the Study Area, September 2001......................... 8-29
Table 8.8 ... Dragonfly Species Recorded in the Study Area, October 2001............................. 8-30
Table 8.9 ... Butterfly Species Recorded in the Study Area, June and July 2001....................... 8-32
Table 8.10 . Butterfly Species Recorded in the Study Area, September 2001........................... 8-34
Table 8.11 . Butterfly Species Recorded in the Study Area, October 2001............................... 8-36
Table 8.12.. Flora Recorded in the Study Area, July to November 2001.................................. 8-40
Table 8.13.. Faunal Species of Conservation Interest Present in the Study Area........................ 8-48
Table 8.14
. Number of Faunal
Species Present in Different Habitat Types Within the
Table 8.15.. Summary of Species of Conservation Interest found in
Streams............................. 8-59
Table 8.16.. Ecological Evaluation of Secondary Woodland Within the Study Area.................. 8-63
Table 8.17.. Ecological Evaluation of Plantation Woodland Within the Study Area.................... 8-64
Table 8.18.. Ecological Evaluation of Tall Shrubland Mosaic Within the Study Area.................. 8-65
Table 8.19.. Ecological Evaluation of Shrubland-Grassland Mosaic Within the Study Area........ 8-65
Table 8.20.. Ecological Evaluation of Stream and Riparian Habitat Within the Study Area......... 8-66
Table 8.21.. Ecological Evaluation of Grassland Within the Study Area..................................... 8-67
Table 8.22.. Ecological Evaluation of Fong Yuen Marsh Within the Study Area........................ 8-68
Table 8.23.. Ecological Evaluation of Wasteland Within the Study Area.................................... 8-68
Table 8.24.. Ecological Evaluation of Agricultural Land Within the Study Area.......................... 8-69
Table 8.25.. Ecological Evaluation of Village Area Within the Study Area................................. 8-69
Table 8.26.. Summary of the Ecological Value of Habitats Within the Study Area..................... 8-71
Table 8.27.. Habitat Loss Arising from the Project................................................................... 8-74
Table 8.28.. Summary of Habitat Requirements, Mobility and Potential Development Impact on Faunal Species (Adults) of Conservation Interest in the Study Area................................................................ 8-92
Table 8.29.. Summary of Construction Phase Unmitigated Impacts........................................... 8-97
Table 8.30.. Summary of Operation Phase Unmitigated Impacts............................................. 8-105
Table 8.31.. Summary of Planting Proposals.......................................................................... 8-107
Table 8.32.. Summary of Construction Phase Impacts and Mitigation Measures..................... 8-110
Table 8.33.. Summary of Operation Phase Impacts and Mitigation Measures......................... 8-112
Table 8.34.. Evaluation of Secondary Woodland Residual Environmental Impacts.................. 8-113
Table 8.35 . Evaluation of Barrier Effects Residual Environmental Impacts.............................. 8-113
Table 8.36.. Summary of Proposed Mitigation Measures and Predicated Residual Impacts..... 8-116
Section 9
Table 9.1a.. Schedule of Bridge Structures................................................................................ 9-2
Table 9.1b.. Schedule of Proposed Retaining Walls................................................................... 9-2
Table 9.2.... Relationship between Receptor Sensitivity and Impact Magnitude in Defining Significance 9-6
Table 9.3.... Identity and Characteristics of the Key Visual Receivers....................................... 9-19
Table 9.4.... Characteristics of Key Views............................................................................... 9-21
Table 9.5.... Schedule of Culverts............................................................................................ 9-23
Table 9.6a.. Summary of Significance of Landscape Impacts during the Construction
Table 9.6b.. Summary
of Significance of Visual Impacts
during the Construction
Table 9.7.... Proposed Construction Stage Mitigation Measures............................................... 9-35
Table 9.8a.. Summary
of Significance of Landscape Impacts during the Operational
Table 9.8b.. Summary of Significance of Visual Impacts
during the Operational
Table 9.9.... Proposed Operational Stage Mitigation Measures................................................ 9-41
Table 9.10.. Summary of Planting Proposals............................................................................ 9-45
Section 10
Table 10.1...... Daytime Weather Probabilities........................................................................ 10-4
Table 10.2...... Nighttime Weather Probabilities...................................................................... 10-4
Table 10.3...... Constuction Worker Data in 2006 (on new Tung Chung Road)........................ 10-5
Table 10.4...... Vehicle Forecast for Construction Phase in 2006............................................. 10-6
Table 10.5...... Calculation for Average Number of People per Vehicle................................... 10-6
Table 10.6...... Road Population for Construction Phase in 2006............................................. 10-6
Table 10.7...... Population Data for Operational Phase in 2021 (15 years after opening of new Tung Chung Road) 10-7
Table 10.8...... Summary of Failure Case due to Earthquake................................................. 10-12
Table 10.9...... Frequency Calculation................................................................................... 10-12
Table 10.10.... Frequencies of Release to Atmosphere for Indoor Releases........................... 10-13
Table 10.11.... Release Rates and Concentrations to Atmosphere......................................... 10-14
Table 10.12.... External Releases on the Approach Road...................................................... 10-14
Table 10.13.... Summary of Event Frequency during Unloading............................................. 10-15