TABLE OF CONTENTS

1 Introduction.. 1-1

1.1 Background. 1-1

1.2 The Project 1-1

1.3 Objectives of the EIA Study. 1-2

1.4 Structure of the EIA Report 1-3

2 PROJECT DESCRIPTION.. 2-1

2.1 Site Location and History. 2-1

2.2 Purpose and Objective of the Project 2-1

2.3 Consideration of Alternatives/Options. 2-3

2.4 Details of the Project 2-12

2.5 Concurrent Projects. 2-23

3 Air Quality impact. 3-1

3.1 Introduction. 3-1

3.2 Environmental Legislations, Standards and Guidelines. 3-1

3.3 Description of the Environment and Future Trends. 3-2

3.4 Identification of Air Sensitive Receivers. 3-4

3.5 Identification of Environmental Impacts during Construction Phase. 3-6

3.6 Assessment Methodology. 3-9

3.7 Dispersion Modelling & Modelling Approach. 3-15

3.8 Prediction and Evaluation of Environmental Impacts. 3-17

3.9 Mitigation of Adverse Environmental Impacts. 3-17

3.10 Evaluation of Residual Impacts. 3-21

3.11 Environmental Monitoring and Audit 3-22

3.12 Conclusion. 3-22

4 noise impact. 4-1

4.1 Introduction. 4-1

4.2 Environmental Legislation, Standards, and Guidelines. 4-1

4.3 Description of Existing Environment 4-4

4.4 Noise Sensitive Receivers. 4-6

4.5 Construction Phase. 4-14

4.6 Operational Phase - Fixed Plant Noise Impact Assessment 4-32

4.7 Operational Phase - Rail Noise Impact Assessment 4-35

4.8 Environmental Monitoring and Audit Requirement 4-50

4.9 Conclusion. 4-51

5 water quality Impact. 5-1

5.1 Introduction. 5-1

5.2 Environmental Legislation, Plans, Standards, and Guidelines. 5-1

5.3 Description of the Environment 5-5

5.4 Water Sensitive Receivers. 5-9

5.5 Assessment Methodologies. 5-10

5.6 Identification and Evaluation of Environmental Impacts. 5-10

5.7 Cumulative Impacts from Concurrent Project 5-14

5.8 Recommended Water Quality Mitigation Measures. 5-14

5.9 Evaluation of Residual Impacts. 5-19

5.10 EM&A Requirements. 5-19

5.11 Conclusions. 5-19

6 waste management implications.. 6-1

6.1 Introduction. 6-1

6.2 Environmental Legislation, Standards and Guidelines. 6-1

6.3 Identification and Evaluation of Wastes Implications. 6-4

6.4 Mitigation of Adverse Environmental Impacts. 6-12

6.5 Evaluation of Residual Environmental Impacts. 6-18

6.6 Environmental Monitoring and Audit Requirement 6-18

6.7 Conclusion. 6-18

7 Land Contamination.. 7-1

7.1 Introduction. 7-1

7.2 Environmental Legislation, Plans, Standards, and Guidelines. 7-1

7.3 Assessment Methodologies. 7-1

7.4 Description of the Environment 7-2

7.5 Identification of Potential Land Contamination Concern. 7-2

7.6 Site Investigation Plan. 7-9

7.7 Evaluation of Environmental Impacts. 7-11

7.8 Mitigation of Adverse Environmental Impacts. 7-11

7.9 Evaluation of Residual Environmental Impacts. 7-12

7.10 Conclusion. 7-13

8 ECOLOGY (TERRESTRIAL) 8-1

8.1 Introduction. 8-1

8.2 Environmental Legislation, Standards and Guidelines. 8-1

8.3 Assessment Methodology. 8-1

8.4 Description of the Environment 8-6

8.5 Survey Findings. 8-11

8.6 Ecological Value of Habitats and Species. 8-16

8.7 Identification of Potential Ecological Impacts. 8-20

8.8 Evaluation of Potential Ecological Impacts. 8-29

8.9 Mitigation of Adverse Environmental Impacts. 8-31

8.10 Cumulative Ecological Impacts. 8-37

8.11 Evaluation of Residual Ecological Impacts. 8-37

8.12 Environmental Monitoring and Audit 8-38

8.13 Conclusion. 8-38

8.14 References. 8-39

9 LANDSCAPE AND VISUAL IMPACT ASSESSMENT. 9-1

9.1 Introduction. 9-1

9.2 Scope and Content of the Study. 9-1

9.3 Environmental Legislation, Standards and Guidelines. 9-2

9.4 Assessment Methodology. 9-3

9.5 Review of Planning Control Framework. 9-8

9.6 Baseline Study. 9-11

9.7 Landscape Impact Assessment 9-27

9.8 Visual Impact Assessment 9-37

9.9 Landscape and Visual Mitigation Measures. 9-45

9.10 Residual Impacts. 9-48

9.11 Cumulative Impacts. 9-64

9.12 Conclusion. 9-65

10 cultural heritage impact assessment. 10-1

10.1 Introduction. 10-1

10.2 Environmental Legislation, Standards and Guidelines. 10-1

10.3 Assessment Methodology. 10-2

10.4 Background. 10-3

10.5 Baseline Conditions. 10-5

10.6 Identification of Environmental Impacts. 10-6

10.7 Mitigation Measures. 10-7

10.8 Conclusion. 10-7

10.9 References. 10-8

11 HAZARD TO LIFE.. 11-1

11.1 Background. 11-1

11.2 Assessment Criteria. 11-1

11.3 Assessment Approach. 11-2

11.4 Description of Assessment Area. 11-3

11.5 Hazard Identification. 11-13

11.6 Hazard Occurrence. 11-19

11.7 Consequence and Impact Analysis. 11-29

11.8 Risk Evaluation. 11-32

11.9 Risk Mitigation Measures. 11-40

11.10 Environmental Monitoring and Audit Requirement 11-43

11.11 Conclusion. 11-43

11.12 References. 11-44

12 Environmental Monitoring and Audit. 12-1

12.1 Introduction. 12-1

12.2 Air Quality. 12-1

12.3 Noise. 12-1

12.4 Water Quality. 12-1

12.5 Waste Management 12-2

12.6 Land Contamination. 12-2

12.7 Terrestrial Ecology. 12-2

12.8 Landscape and Visual 12-3

12.9 Cultural Heritage. 12-3

12.10 Hazard to Life. 12-3

13 Summary of Environmental Outcomes.. 13-1

13.1 Overview.. 13-1

13.2 Environmental Benefits of the Project 13-1

13.3 Incorporation of Environmentally Friendly Options. 13-1

13.4 Environmental Designs Recommended. 13-2

13.5 Key Environmental Problems Avoided and Environmentally Sensitive Areas Protected. 13-3

13.6 Environmental Protection Measures Recommended. 13-5

13.7 Estimation of Population Protected. 13-10

14 Conclusion.. 14-1

14.1 Conclusion of EIA Study. 14-1

List of tables

Table 2.1 Considerations and Constraints for Alignment Option Selection 2-5

Table 2.2 Comparison of Alignment Options. 2-6

Table 2.3 Comparison of TRB Scheme Options. 2-7

Table 2.4 Key Public Views and Corresponding Design Considerations. 2-15

Table 2.5 Key Recommended Mitigation Measures / Good Site Practices / Enhancement Measures and their Associated Benefits. 2-18

Table 2.6 List of Concurrent Projects and Potential Cumulative Impacts 2-24

Table 3.1 Hong Kong Air Quality Objectives. 3-1

Table 3.2 The Air Quality Monitoring Data Recorded at EPD’s Tuen Mun AQMS in Year 2016 – 2020. 3-3

Table 3.3 PATHv2.1 Model - Air Pollutant Concentrations in Year 2025 3-3

Table 3.4 Representative Air Sensitive Receivers along TME.. 3-4

Table 3.5 Representative Air Sensitive Receivers in the vicinity of Offsite Works Area. 3-6

Table 3.6 Particle Size Distribution. 3-10

Table 3.7 Dust Emission Design Control Measures. 3-10

Table 3.8 Emission Factors for Dusty Construction Activities. 3-11

Table 3.9 Fractions of Particulates for Construction Dust 3-11

Table 3.10 Tentative Construction Programme. 3-12

Table 3.11 Particle Size Distribution of Aggregate Handling (equivalent to Heavy Construction Activities and Wind Erosion) 3-16

Table 3.12 Worst Predicted Cumulative Air Quality Impact at Representative ASRs (Scenario 1 with Dust Mitigation Measures) 3-18

Table 3.13 Worst Predicted Cumulative Air Quality Impact at Representative ASRs (Scenario 2 with Dust Mitigation Measures) 3-19

Table 4.1 Noise Criteria for Daytime Construction Noise. 4-1

Table 4.2 Construction Noise Criteria during Restricted Hours. 4-2

Table 4.3 Acceptable Noise Levels for Airborne Rail Noise. 4-3

Table 4.4 Acceptable Noise Levels for Fixed Noise Source. 4-4

Table 4.5 Summary of Measured Prevailing Background Noise Levels 4-5

Table 4.6 Identified NSRs and Representative Assessment Points within 300m Assessment Area from the Project 4-7

Table 4.7 Summary of Unmitigated Construction Noise Levels. 4-16

Table 4.8 SWL of QPME adopted for Construction Noise Mitigation. 4-20

Table 4.9 Summary of Mitigated Construction Noise Levels (Non-Restricted Hours) 4-23

Table 4.10 Summary of Cumulative Noise Impact 4-31

Table 4.11 Maximum Allowable SWL for Planned Noise Source at A16 Station 4-34

Table 4.12 Maximum Allowable SWL for Planned Noise Source at TMS Station 4-34

Table 4.13 Assumptions Adopted in Railway Noise Assessment 4-38

Table 4.14 Summary of Unmitigated Rail Noise Levels. 4-40

Table 4.15 Summary of Cumulative Rail Noise Levels (Unmitigated Scenario) 4-43

Table 4.16 Proposed Noise Mitigation Measures for Rail Operation. 4-45

Table 4.17 Summary of Mitigated Rail Noise Levels. 4-46

Table 4.18 Summary of Cumulative Rail Noise Levels (Mitigated Scenario) 4-49

Table 5.1 Summary of Water Quality Objectives for North Western WCZ 5-1

Table 5.2 WSD Standards at Flushing Water Intakes. 5-5

Table 5.3 Summary Statistics of Marine Water Quality of North Western WCZ Collected by EPD in 2020. 5-6

Table 5.4 Summary Statistics of River Water Quality of Tuen Mun River Collected by EPD in 2020. 5-8

Table 6.1 Summary of Inert and non-inert C&D Materials Quantities Generated 6-6

Table 6.2 Changes in Sampling Location ID.. 6-8

Table 6.3 Summary of Chemical Screening Results. 6-10

Table 6.4 Summary of Biological Screening Results. 6-10

Table 6.5 Estimated Quantities of Sediment under each Disposal Option 6-11

Table 6.6 Waste Arising, Waste Handling Procedures and Disposal Outlets 6-16

Table 7.1 Summary of Historical Land Uses of the Project Area. 7-3

Table 7.2 Summary of Potential Land Contamination Issues within the Project Area. 7-6

Table 7.3 Sampling and Testing Plan. 7-10

Table 8.1 Baseline Information of Ecological Resources within the Assessment Area. 8-2

Table 8.2 Ecological Survey Schedule. 8-6

Table 8.3 Maximum Number of Nests Recorded at Tuen Mun Egretry (2017 – 2021) 8-7

Table 8.4 Species of Conservation Importance Recorded from Literature Review for TME Alignment and the Mong Wing Street Offsite Works Area. 8-10

Table 8.5 Habitats Identified within the Assessment Area. 8-11

Table 8.6 Number of Nests Recorded at Tuen Mun Egretry. 8-13

Table 8.7 Number and Species of Night Roost Ardeid Recorded during Ardeid Night Roost Survey. 8-14

Table 8.8 Ecological Evaluation of Modified Watercourse and Developed Area within the Assessment Area for TME Alignment 8-16

Table 8.9 Ecological Evaluation of Mixed Woodland, Village/Orchard and Plantation within the Assessment Area for TME Alignment 8-17

Table 8.10 Species of Conservation Importance Recorded within the Assessment Area for TME Alignment 8-18

Table 8.11 Ecological Evaluation of Habitats within the Assessment Area for Mong Wing Street Offsite Works Area. 8-20

Table 8.12 Direct Loss of Terrestrial Habitats within Project Footprint 8-21

Table 8.13 Evaluation of Potential Ecological Impacts to Developed Area and Modified Watercourse (Assessment Area of TME Alignment) 8-29

Table 8.14 Evaluation of Potential Ecological Impacts to Mixed Woodland, Village/Orchard and Plantation (Assessment Area of TME Alignment) 8-30

Table 8.15 Evaluation of Potential Ecological Impacts to Identified Habitats (Assessment Area of Offsite Works Area) 8-31

Table 8.16 Seasonal Sunset Time During Survey. 8-32

Table 8.17 Summary of Construction Works/Activities within 100m from Ardeid Night Roost and the Associated Mitigation Measures for the Ardeid Night Roost 8-33

Table 9.1 Relationship between Sensitivity and Magnitude of Change in Defining Impact Significance. 9-5

Table 9.2 Relationship between Visually Sensitive Receivers (VSRs) Sensitivity and Magnitude of Change in Defining Impact Significance. 9-7

Table 9.3 Summary of the Review of Planning and Development Control Framework. 9-9

Table 9.4 Landscape Resources and Their Sensitivity. 9-12

Table 9.5 Landscape Character Areas and Their Sensitivity. 9-18

Table 9.6 Visually Sensitive Receivers (VSRs) and Their Sensitivity. 9-23

Table 9.7 Magnitude of Landscape Impact during Construction and Operation 9-28

Table 9.8 Magnitude of Visual Impact during Construction and Operational Phases. 9-41

Table 9.9 Proposed Landscape and Visual Mitigation Measures for Construction Phase.

. 9-45

Table 9.10 Proposed Landscape and Visual Mitigation Measures for Operational Phase. 9-47

Table 9.11 Significance of Landscape Impact during Construction and Operational Phases. 9-53

Table 9.12 Significance of Visual Impact during Construction and Operational Phases. 9-59

Table 11.1 Population within Consultation Zone of the LPG Store. 11-9

Table 11.2 Road Population in Construction Phase Scenario (Year 2026) 11-10

Table 11.3 Road Population in Operational Phase Scenario (Year 2031) 11-10

Table 11.4 Train Population in Operational Phase Scenario (Year 2031) 11-10

Table 11.5 Pedestrian Population. 11-11

Table 11.6 Definitions of Time Modes. 11-11

Table 11.7 Stability Category-Wind Speed Frequencies at HKO Tuen Mun Weather Station. 11-12

Table 11.8 Weather Class-Wind Direction Frequencies at HKO Tuen Mun Weather Station. 11-12

Table 11.9 Identified Failure Cases for the LPG Store. 11-19

Table 11.10 Summary of Identified Failure Cases and Their Associated Failure Rates. 11-23

Table 11.11 Summary of Identified Failure Cases and Their Associated Failure Rates. 11-26

Table 11.12 Summary of Road Ignition Sources for Construction Phase (Year 2026) 11-31

Table 11.13 Summary of Road Ignition Sources for Operational Phase (Year 2031) 11-31

Table 11.14 Societal Risk Data for the LPG Store covering all Assessed Scenarios. 11-37

Table 11.15 Breakdown of PLL for the LPG Store by Major Events (All Assessed Scenarios) 11-39

Table 13.1 Summary of Key Environmental Problems Avoided and Sensitive Areas Protected. 13-3

Table 13.2 Key Recommended Mitigation Measures / Good Site Practices / Enhancement Measures and their Associated Benefits. 13-5

Table 14.1 Summary of Key Environmental Outcomes and Benefits. 14-2