Civil Engineering and Development Department

 

 Environmental Impact Assessment Report

 

 

                                                                                                                                                                      

1            INTRODUCTION   1-1

1.1           Background  1-1

1.2           Study Area  1-1

1.3           EIA Study Brief  1-1

1.4           Designated Projects  1-2

1.5           Further EIA Study for the Schedule 2 DPs  1-3

1.6           Pedestrian Connectivity  1-4

1.7           Objectives of the EIA   1-4

1.8           Structure of this EIA Report 1-5

2            SCOPE OF ENVIRONMENTAL IMPACT ASSESSMENT STUDY   2-1

3            PROJECT DESCRIPTION   3-1

3.1           General Description of the Project 3-1

3.2           Need for the Project 3-1

3.3           Recommended Outline Development Plan  3-1

3.4           Key Infrastructure  3-11

3.5           Nature, Benefit and Scope of the Project 3-14

3.6           Construction Method  3-17

3.7           Implementation Programme  3-18

3.8           Concurrent Projects and Evaluation of Potential Cumulative Impacts  3-19

4            AIR QUALITY IMPACT   4-1

4.1           Legislation and Standards  4-1

4.2           Description of Existing Environment 4-2

4.3           Study Area &Air Sensitive Receivers  4-5

4.4           Pollution Sources  4-35

4.5           Potential Concurrent Projects/ Sources  4-36

4.6           Assessment Methodology  4-37

4.7           Construction Dust Assessment 4-53

4.8           Operational Air Quality Assessment 4-60

4.9           Residual Impacts  4-62

4.10         Environmental Acceptability of Schedule 2 Designated Projects  4-62

4.11         Conclusion  4-64

5            NOISE IMPACT   5-1

5.1           Legislation and Standards  5-1

5.2           Description of Existing Environment 5-5

5.3           Study Area & Noise Sensitive Receivers  5-6

5.4           Potential Concurrent Projects  5-10

5.5           Assessment Methodology  5-11

5.6           Construction Noise Assessment 5-15

5.7           Road Traffic Noise Assessment 5-25

5.8           Fixed Plant Noise Assessment 5-32

5.9           Assessment of Side Effects and Constraints  5-34

5.10         Evaluation of Constraints on Planned Noise Sensitive Developments/ Land Uses  5-34

5.11         Residual Impacts  5-35

5.12         Environmental Acceptability of Schedule 2 Designated Projects  5-35

5.13         Conclusion  5-37

6            WATER QUALITY   6-1

6.1           Legislation and Standards  6-1

6.2           Description of Existing Environment 6-5

6.3           Water Quality Sensitive Receivers & Pollution Sources  6-8

6.4           Potential Concurrent Projects  6-9

6.5           Assessment Methodology  6-9

6.6           Construction Phase Assessment 6-9

6.7           Operational Phase Assessment 6-13

6.8           Residual Impacts  6-15

6.9           Environmental Acceptability of Schedule 2 Designated Projects  6-15

6.10         Conclusion  6-16

7            SEWERAGE AND SEWAGE TREATMENT IMPLICATION   7-1

7.1           Legislation and Standards  7-1

7.2           Description of Existing Environment 7-1

7.3           Sewage Estimation and Assessment Methodology  7-2

7.4           Evaluation of Impact on Sewage Treatment Works  7-2

7.5           Evaluation of Impact on Sewerage System and Mitigation Measures  7-3

7.6           Environmental Acceptability of Schedule 2 Designated Projects  7-4

7.7           Conclusion  7-4

8            WASTE MANAGEMENT IMPLICATION   8-1

8.1           Environmental Legislation, Standards and Guidelines  8-1

8.2           Description of the Environment 8-3

8.3           Assessment Methodology  8-4

8.4           Identification and Evaluation of Waste Management Implications  8-5

8.5           Mitigation Measures  8-17

8.6           Residual Environmental Impacts  8-21

8.7           Environmental Acceptability of Schedule 2 Designated Projects  8-21

8.8           Conclusion  8-22

9            LAND CONTAMINATION   9-1

9.1           Environmental Legislation and Guidelines  9-1

9.2           Assessment Methodology  9-6

9.3           Description of the Environment 9-8

9.4           Future Land Use  9-9

9.5           Potentially Contaminated Area  9-10

9.6           Site Investigation  9-17

9.7           Environmental Acceptability of Schedule 2 Designated Projects  9-18

9.8           Conclusion  9-19

10          ECOLOGICAL IMPACT   10-1

10.1         Legislation and Standards  10-1

10.2         Description of the Study  10-2

10.3         Survey Methodology  10-4

10.4         Ecological Baseline Conditions  10-6

10.5         Evaluation of Ecological Importance of Habitats and

                Species  10-19

10.6         Potential Ecological Impacts of the Proposed

                Development 10-37

10.7         Mitigation Measures Adopted to Avoid, Minimise and Compensate for Ecological Impacts  10-51

10.8         Precautionary measures for herpetofauna  10-56

10.9         Residual Impacts  10-56

10.10       Environmental Acceptability of Schedule 2 Designated Projects  10-57

10.11       Conclusion  10-58

10.12       References  10-58

11          LANDSCAPE AND VISUAL IMPACTS  11-1

11.1         Legislation and Standards  11-1

11.2         Assessment Methodology  11-3

11.3         Scope and Content of the Study  11-9

11.4         Review of Planning and Development Control Framework  11-9

11.5         Baseline Study  11-13

11.6         Landscape Issues  11-13

11.7         Visual Issues  11-13

11.8         Cumulative Impacts  11-14

11.9         Landscape Resources and Landscape Character Areas  11-14

11.10       Visual Envelope  11-25

11.11       Visually Sensitive Receivers (VSRs) 11-25

11.12       Landscape Impact Assessment 11-38

11.13       Visual Impact Assessment 11-44

11.14       Mitigation Measures  11-58

11.15       Magnitude Of Visual Impacts  11-72

11.16       Prediction of Significance of Visual Impacts  11-75

11.17       Environmental Acceptability of Schedule 2 Designated Projects  11-90

11.18       Conclusion  11-90

12          ENVIRONMENTAL MONITORING AND AUDIT   12-1

12.1         Introduction  12-1

12.2         Project Organisation  12-1

12.3         EM&A Manual 12-1

12.4         Project Implementation Schedule  12-2

12.5         EM&A Programme  12-2

13          SUMMARY OF ENVIRONMENTAL OUTCOMES  13-1

13.1         Population and Environmental Areas Protected  13-1

13.2         Environmental Friendly Design and Benefits  13-1

13.3         Summary of the Measures taken for the Avoidance and Minimisation of Environmental Impacts  13-2

14          CONCLUSION   14-1

14.1         General 14-1

14.2         Air Quality Impact 14-1

14.3         Noise Impact 14-2

14.4         Water Quality  14-2

14.5         Sewerage and Sewage Treatment Implication  14-3

14.6         Waste Management Implication  14-3

14.7         Land Contamination  14-3

14.8         Ecological Impact 14-4

14.9         Landscape and Visual Impacts  14-4

14.10       Environmental Monitoring and Audit Requirement 14-6

 

 

FIGURES

1            INTRODUCTION

227724/E/0001           Location of Project

227724/E/0002           Locations of Designated Projects

3            PROJECT DESCRIPTION

227724/E/0003           Recommended Outline Development Plan

227724/E/0004           Plan of Road L4 of ARQ

227724/E/0005           Plan of Access Road Leading to Po Lam Road

227724/E/0006           Location of Deleted Drainage Retention Tank

227724/E/0007           Plan of Proposed Sewerage Layout

227724/E/0008           Locations of Concurrent Projects

4            AIR QUALITY IMPACT

227724/E/1010           Locations of Air Sensitive Receivers (Sheet 1 of 4)

227724/E/1020           Locations of Air Sensitive Receivers (Sheet 2 of 4)

227724/E/1030           Locations of Air Sensitive Receivers (Sheet 3 of 4)

227724/E/1040           Locations of Air Sensitive Receivers (Sheet 4 of 4)

227724/E/1050           Locations of Chimneys within 500m Assessment Area

227724/E/1060           Locations of Potential Odour Sources

227724/E/1065           Location of Open Road and Tunnel Portal (Construction Phase) (Sheet 1 of 3)

227724/E/1066           Location of Open Road and Tunnel Portal (Construction Phase) (Sheet 2 of 3)

227724/E/1067           Location of Open Road and Tunnel Portal (Construction Phase) (Sheet 3 of 3)

227724/E/1070           Location of Open Road and Tunnel Portal (Operational Phase) (Sheet 1 of 3)

227724/E/1080           Location of Open Road and Tunnel Portal (Operational Phase) (Sheet 2 of 3)

227724/E/1090           Location of Open Road and Tunnel Portal (Operational Phase)  (Sheet 3 of 3)

227724/E/1100           Contours of Cumulative Unmitigated Max. 1-hour TSP Concentration at 1.5m above Ground in Year 2017

227724/E/1101           Contours of Cumulative Unmitigated Max. 24-hour RSP Concentration at 1.5m above ground in Year 2017

227724/E/1102           Contours of Cumulative Unmitigated 10^th Highest 24-hour RSP Concentration at 1.5m above ground in Year 2017

227724/E/1103           Contours of Cumulative Unmitigated Annual-average RSP Concentration at 1.5m above ground in Year 2017

227724/E/1104           Contours of Cumulative Unmitigated Max. 24-hour FSP Concentration at 1.5m above ground in Year 2017

227724/E/1105           Contours of Cumulative Unmitigated 10th Highest 24-hour FSP Concentration at 1.5m above ground in Year 2017

227724/E/1106           Contours of Cumulative Unmitigated Annual-average FSP Concentration at 1.5m above ground in Year 2017

227724/E/1160           Contours of Cumulative Mitigated Max. 1-hour TSP Concentration at 1.5m above ground in Year 2017 (Tier 1)

227724/E/1161           Contours of Cumulative Mitigated Max. 24-hour RSP Concentration at 1.5m above ground in Year 2017 (Tier 1)

227724/E/1162           Contours of Cumulative Mitigated 10th Highest  24-hour RSP Concentration at 1.5m above ground in Year 2017 (Tier 1)

227724/E/1163           Contours of Cumulative Mitigated Max. 24-hour FSP Concentration at 1.5m above ground in Year 2017 (Tier 1)

227724/E/1164           Contours of Cumulative Mitigated 10^th Highest  24-hour FSP Concentration at 1.5m above ground in Year 2017 (Tier 1)

227724/E/1179           Contours of Cumulative Mitigated Max. 1-hour TSP Concentration at 1.5m above ground in Year 2017 (Tier 2) (Ma Yau Tong Village)

227724/E/1180           Contours of Cumulative Mitigated Max. 1-hour TSP Concentration at 1.5m above ground in Year 2017 (Tier 2) (DAR Site C)

227724/E/1181           Contours of Cumulative Mitigated Max. 24-hour RSP Concentration at 1.5m above ground in Year 2017 (Tier 2) (DAR Site C & Site E)

227724/E/1182           Contours of Cumulative Mitigated 10^th Highest  24-hour RSP Concentration at 1.5m above ground in Year 2017 (Tier 2) (DAR Site C & Site E)

227724/E/1183           Contours of Cumulative Mitigated Max. 24-hour FSP Concentration at 1.5m above ground in Year 2017 (Tier 2) (DAR Site C & Site E)

227724/E/1184           Contours of Cumulative Mitigated 10^th Highest 24-hour FSP Concentration at 1.5m above ground in Year 2017 (Tier 2) (DAR Site C & Site E)

227724/E/1185           Contours of Cumulative Mitigated Max. 1-hour TSP Concentration at 1.5m above ground in Year 2017 (Tier 2) (DAR Site E)

227724/E/1186           Contours of Cumulative Mitigated Max. 24-hour RSP Concentration at 1.5m above ground in Year 2017 (Tier 2) (DAR Site E)

227724/E/1187           Contours of Cumulative Mitigated 10^th Highest  24-hour RSP Concentration at 1.5m above ground in Year 2017 (Tier 2) (DAR Site E)

227724/E/1188           Contours of Cumulative Mitigated Max. 24-hour FSP Concentratio