Contents

 

1       INTRODUCTION

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       PROJECT DESCRIPTION

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

3.2.1........ Air Quality Objectives...................................................................... 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

3.4.1........ Water Quality Objectives................................................................. 3-4

3.4.2........ Inland Waters - Surface Waters........................................................ 3-5

3.4.3........ Inland Waters - Ground Water......................................................... 3-6

3.4.4........ Marine Waters................................................................................. 3-6

3.4.5........ Marine Water Quality Objectives...................................................... 3-7

3.5........ Waste Management....................................................................................... 3-8

3.6........ Ecology........................................................................................................... 3-9

3.6.1........ Environmental Impact Assessment Ordinance.................................... 3-9

3.6.2........ Country Parks 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........ Landscape and Visual.................................................................................. 3-10

3.7.1........ Environmental Impact Assessment Ordinance.................................. 3-10

3.7.2........ Other Landscape Documents.......................................................... 3-10

3.8........ Hazard Assessment...................................................................................... 3-11

3.8.1........ Chlorine Hazard and Dangerous Goods Classification..................... 3-11

3.8.2........ EIAO TM Risk Guidelines.............................................................. 3-11

3.8.3........ Hazard Assessment........................................................................ 3-11

3.8.4........ The Hong Kong Risk Guidelines..................................................... 3-12

3.8.5........ Interpretation of the HKRGs........................................................... 3-12

3.9........ Heritage........................................................................................................ 3-12

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       AIR QUALITY

4.1........ Sensitive Receivers....................................................................................... 4-1

4.2........ Background Air Quality................................................................................. 4-2

4.3........ Construction Phase Assessment................................................................... 4-2

4.3.1........ Assessment Methodology................................................................. 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........ Operational Phase Assessment..................................................................... 4-6

4.4.1........ Assessment Methodology................................................................. 4-6

4.4.2........ Operational Air Quality Assessment.................................................. 4-8

4.5........ Residual Impacts............................................................................................ 4-8

4.6........ Environmental Monitoring and Audit............................................................ 4-8

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

5.3.1........ Construction Activities...................................................................... 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       WATER QUALITY

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

6.4.1........ Operational Road Runoff................................................................ 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       WASTE MANAGEMENT

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       ECOLOGY

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

8.2.1........ Background..................................................................................... 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

8.3.1........ Background..................................................................................... 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

8.5.1........ Background................................................................................... 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

8.7.1........ General.......................................................................................... 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

8.8.1........ General.......................................................................................... 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     HAZARD

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

11.6.1...... Background................................................................................. 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

12.2.1...... Construction Phase......................................................................... 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

12.4.1...... Construction Phase......................................................................... 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

13.3.3...... Ecology.......................................................................................... 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     SUMMARY AND CONCLUSIONS

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

....................... Control Zones................................................................................................... 3-7

 

 

 

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

.................. Study Area.......................................................................................................... 8-56

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

.................. Stage................................................................................................................... 9-30

Table 9.6b.. Summary of Significance of Visual Impacts during the Construction

.................. Stage................................................................................................................... 9-31     

Table 9.7.... Proposed Construction Stage Mitigation Measures............................................... 9-35

Table 9.8a.. Summary of Significance of Landscape Impacts during the Operational 

.................. Stage................................................................................................................... 9-49

Table 9.8b.. Summary of Significance of Visual Impacts during the Operational

.................. Stage................................................................................................................... 9-50     

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