Civil Engineering and Development Department

 

Pier Improvement at Lai Chi Wo

 

Environmental Impact Assessment

 

 

Contents

 

                                                                                                                                                                                                         

1            Introduction  1-1

2            Project Description  2-1

3            Air Quality  3-1

4            Noise  4-1

5            Water Quality  5-1

6            Waste Management Implications  6-1

7            Land Contamination  7-1

8            Ecological Impact Assessment 8-1

9            Landscape and Visual Impact 9-1

10          Fisheries  10-1

11          Cultural Heritage  11-1

12          Environmental Monitoring and Auditing Requirements  12-1

13          Summary of Environmental Outcomes  13-1

14          Conclusion  14-1

 


Figures

Figure 1.1              Location of Project (Lai Chi Wo)

Figure 1.2              Photo of the Existing Lai Chi Wo Pier

Figure 1.3              Layout of Project

Figure 3.1              Locations of Representative Air Sensitive Receivers and Concerned PATH Grids

Figure 4.1              Locations of Representative Noise Sensitive Receivers

Figure 5.1              Locations of Assessment Area, Representative Water Sensitive Receivers and EPD Monitoring Stations

Figure 5.2              Landforms of Lai Chi Wo and Coastal Crooked Harbour

Figure 5.3              Hydrographic Survey

Figure 5.4              Comparison of Proposed Lai Chi Wo Pier and Sai Kung Public Pier

Figure 6.1              Proposed Works Area and Sediment Sampling Locations

Figure 8.1              Recognized Sites of Conservation Importance

Figure 8.2              Ecological Survey Locations within the 500m Assessment Area of Lai Chi Wo

Figure 8.3a            Habitat Map and Locations of Species of Conservation Importance

Figure 8.3b           Habitat Map and Locations of Species of Conservation Importance (Zoom-in to the Project)

Figure 8.4a            Photos of Habitats and Selected Species of Conservation Importance – Sheet 1 of 3

Figure 8.4b           Photos of Habitats and Selected Species of Conservation Importance – Sheet 2 of 3

Figure 8.4c            Photos of Habitats and Selected Species of Conservation Importance – Sheet 3 of 3

Figure 9.1a            Review of Planning and Development Control Framework – Sheet 1 of 2

Figure 9.1b           Review of Planning and Development Control Framework – Sheet 2 of 2

Figure 9.2              Landscape Resources

Figure 9.3a            Photographs of Landscape Resources – Sheet 1 of 3

Figure 9.3b           Photographs of Landscape Resources – Sheet 2 of 3

Figure 9.3c            Photographs of Landscape Resources – Sheet 3 of 3

Figure 9.4              Landscape Character Areas

Figure 9.5              Photographs of Landscape Character Areas

Figure 9.6              Visual Envelope and Visually Sensitive Receivers

Figure 9.7a            Visual Contexts of Visually Sensitive Receivers – Sheet 1 of 4

Figure 9.7b           Visual Contexts of Visually Sensitive Receivers – Sheet 2 of 4

Figure 9.7c            Visual Contexts of Visually Sensitive Receivers – Sheet 3 of 4

Figure 9.7d           Visual Contexts of Visually Sensitive Receivers – Sheet 4 of 4

Figure 9.8              Recommended Landscape and Visual Mitigation Plan

Figure 9.9ai           Photomontages – Viewpoint A at VSR 1 – Sheet 1 of 2

Figure 9.9aii          Photomontages – Viewpoint A at VSR 1 – Sheet 2 of 2

Figure 9.9bi          Photomontages – Viewpoint B at VSR 2 – Sheet 1 of 2

Figure 9.9bii         Photomontages – Viewpoint B at VSR 2 – Sheet 2 of 2

Figure 9.9ci           Photomontages – Viewpoint C at VSR 3 – Sheet 1 of 2

Figure 9.9cii          Photomontages – Viewpoint C at VSR 3 – Sheet 2 of 2

Figure 9.9di          Photomontages – Viewpoint D at VSR 4 – Sheet 1 of 2

Figure 9.9dii         Photomontages – Viewpoint D at VSR 4 – Sheet 2 of 2

Figure 10.1            Distribution of Fisheries Production (overall) (Port Survey 2016/17, AFCD)

Figure 10.2           Distribution of Fishing Vessel Operation (sampan) (Port Survey 2016/17, AFCD)

Figure 10.3           Distribution of Fishing Vessel Operation (other types of fishing vessels) (Port Survey 2016/17, AFCD)

Figure 10.4           Distribution of Fisheries Production (sampan) (Port Survey 2016/17, AFCD)

Figure 10.5           Distribution of Fisheries Production (other types of fishing vessels) (Port Survey 2016/17, AFCD)

Figure 10.6           Fisheries Resources in the Vicinity of Lai Chi Wo Pier

Figure 10.7           Locations of Fish Culture Zones in Hong Kong

Figure 11.1            Assessment Area for Marine Archaeological Investigation

Figure 11.2            Seabed Features and Distribution of Sonar and Magnetic Contacts

 

 

Appendices

Appendix 2.1        Tentative Construction Programme

Appendix 4.1        Photos of Representative Noise Sensitive Receivers

Appendix 4.2        Detailed Plant Inventory

Appendix 4.3        Locations of Workfronts

Appendix 5.1        Outline of Emergency Spillage Plan

Appendix 5.2        Tentative Location for Silt Curtain Deployment

Appendix 6.1       Sediment Sampling and Testing Plan

Appendix 6.2       Laboratory Testing Results

Appendix 6.3       Summary of the Chemical and Biological Screening Tests results

Appendix 7.1        Historical Aerial Photos

Appendix 7.2        Correspondences with FSD and EPD

Appendix 7.3        Photo Records of Site Survey

Appendix 7.4        Site Walkover Checklist

Appendix 8.1        Plant Species Recorded within the 500m Assessment Area

Appendix 8.2        Mammal Species Recorded within the 500m Assessment Area

Appendix 8.3        Bird Species Recorded within the 500m Assessment Area

Appendix 8.4        Reptile Species Recorded within the 500m Assessment Area

Appendix 8.5        Amphibian Species Recorded within the 500m Assessment Area

Appendix 8.6        Dragonfly Species Recorded within the 500m Assessment Area

Appendix 8.7        Butterfly Species Recorded within the 500m Assessment Area

Appendix 8.8        Aquatic Fauna Recorded within the 500m Assessment Area

Appendix 8.9        Intertidal Organisms Recorded in the Qualitative Survey within the 500m Assessment Area (Wet Season)

Appendix 8.10      Intertidal Organisms Recorded in the Qualitative Survey within the 500m Assessment Area (Dry Season)

Appendix 8.11      Intertidal Organisms Recorded in the Quantitative Survey within the 500m Assessment Area (Wet Season)

Appendix 8.12      Intertidal Organisms Recorded in the Quantitative Survey within the 500m Assessment Area (Dry Season)

Appendix 8.13      Abundance of Subtidal Benthos Species Recorded at each Sampling Location within the 500m Assessment Area during Wet Season

Appendix 8.14      Biomass of Subtidal Benthos Species Recorded at each Sampling Location within the 500m Assessment Area during Wet Season

Appendix 8.15      Abundance of Subtidal Benthos Species Recorded at each Sampling Location within the 500m Assessment Area during Dry Season

Appendix 8.16      Biomass of Subtidal Benthos Species Recorded at each Sampling Location within the 500m Assessment Area during Dry Season

Appendix 8.17      Spot Check Dive Survey Results in Lai Chi Wo

Appendix 8.18      REA Dive Survey Results in Lai Chi Wo

Appendix 9.1        Broad Brush Tree Survey

Appendix 11.1      Detailed Results of Side Scan Sonar

Appendix 11.2      Image of Processed Magnetic Intensity over the Survey Area

Appendix 11.3      Images of Visual Diver Survey

Appendix 12.1      Environmental Mitigation Implementation Schedule

Appendix 14.1     Key Assessment Assumptions and Limitation of Assessment Methodologies

Appendix 14.2     Summary of Environmental Impacts Associated with the Project

 

 

Annexes

Annex 8.1              Rating of REA Results