CONTENTS

 

 

1       INTRODUCTION....................................................................................................... 1-1

1.1    Background.................................................................................................................... 1-1

1.2    Objectives of this EIA Study........................................................................................... 1-2

1.3    Structure of the Report.................................................................................................... 1-3

 

 

2       PROJECT DESCRIPTION......................................................................................... 2-1

2.1    Need for the Project....................................................................................................... 2-1

2.2    Selection of Suitable Sludge Treatment Technology.......................................................... 2-2

2.2.1        Consideration of Different Technologies for Sludge Treatment............................. 2-2

2.2.2        Option Evaluation Criteria.................................................................................. 2-3

2.2.3        Evaluation of Shortlisted Sludge Treatment Options.............................................. 2-4

2.2.4        Recommended Sludge Treatment Option............................................................. 2-5

2.3    Site Selection.................................................................................................................. 2-5

2.3.1        Consideration of Alternative Site Locations......................................................... 2-5

2.3.2        Site Selection Criteria......................................................................................... 2-6

2.3.3        Evaluation of Shortlisted Sites............................................................................. 2-7

2.3.4        Recommended Site.......................................................................................... 2-12

2.4    Scope of the Project..................................................................................................... 2-13

2.4.1        Introduction..................................................................................................... 2-13

2.4.2        Decommissioning of PFA Lagoon..................................................................... 2-13

2.4.3        Construction of STF......................................................................................... 2-14

2.4.4        Operation of STF............................................................................................. 2-16

2.5    Consideration of Alternative Sequences of Construction................................................. 2-17

2.6    Consideration of Alternative Construction Methods........................................................ 2-17

2.7    Construction Programme............................................................................................... 2-17

2.8    Interactions with Other Projects..................................................................................... 2-18

2.9    Assessment Areas of the EIA Study.............................................................................. 2-19

 

 

3       AIR QUALITY............................................................................................................. 3-1

3.1    Introduction.................................................................................................................... 3-1

3.2    Environmental Legislation, Policies, Plans, Standards and Criteria..................................... 3-1

3.3    Description of the Environment........................................................................................ 3-2

3.3.1        Environs............................................................................................................ 3-2

3.3.2        Background Air Quality..................................................................................... 3-2

3.3.3        Contribution of Emissions from BPPS and CPPS................................................. 3-2

3.4    Air Sensitive Receivers.................................................................................................... 3-4

3.5    Identification of Pollution Sources.................................................................................... 3-6

3.5.1        Construction Phase............................................................................................ 3-6

3.5.2        Operation Phase................................................................................................ 3-7

3.6    Assessment Methodology................................................................................................ 3-7

3.6.1        Construction Phase............................................................................................ 3-7

3.6.2        Operation Phase................................................................................................ 3-7

3.7    Identification, Prediction and Evaluation of Air Quality Impacts....................................... 3-20

3.7.1        Gaseous Pollutants........................................................................................... 3-20

3.7.2        Odour Impacts................................................................................................. 3-31

3.8    Mitigation Measures...................................................................................................... 3-31

3.8.1        Construction Phase.......................................................................................... 3-31

3.8.2        Operation Phase.............................................................................................. 3-32

3.9    Residual Environmental Impact...................................................................................... 3-32

3.9.1        Construction Phase.......................................................................................... 3-32

3.9.2        Operation Phase.............................................................................................. 3-32

3.10  Environmental Monitoring and Audit Requirements......................................................... 3-33

3.10.1      Construction Phase.......................................................................................... 3-33

3.10.2      Operation Phase.............................................................................................. 3-33

3.11  Conclusion.................................................................................................................... 3-33

3.11.1      Construction Phase.......................................................................................... 3-33

3.11.2      Operation Phase.............................................................................................. 3-33

 

 

4       HUMAN HEALTH RISK ASSESSMENT................................................................ 4-1

4.1    Introduction.................................................................................................................... 4-1

4.2    HHRA for Aerial Emissions from STF............................................................................. 4-1

4.2.1        Assessment Approach....................................................................................... 4-1

4.2.2        Hazard Identification.......................................................................................... 4-2

4.2.3        Exposure Assessment........................................................................................ 4-5

4.2.4        Dose-response Assessment................................................................................ 4-5

4.2.5        Risk/Hazard Characterization............................................................................. 4-9

4.2.6        Conclusions..................................................................................................... 4-12

4.2.7        Uncertainty of the Assessment......................................................................... 4-17

4.3    HHRA for Microbes from Dewatered Sewage Sludge................................................... 4-18

4.3.1        Overview........................................................................................................ 4-18

4.3.2        Risk Assessment Methodology......................................................................... 4-19

4.3.3        Risk Assessment Result................................................................................... 4-21

4.3.4        Conclusions and Recommendations................................................................... 4-22

4.4    HHRA for Radon Emission from Pulverized Fly Ash...................................................... 4-24

4.4.1        Introduction..................................................................................................... 4-24

4.4.2        Health Hazard of Radon................................................................................... 4-24

4.4.3        Radon Characteristics of the Project................................................................. 4-25

4.4.4        Risk Assessment of Radon Emission Associated with PFA................................ 4-26

4.4.5        Recommended Measures to Control Radon Health Risk..................................... 4-29

4.5    Conclusions.................................................................................................................. 4-29

4.6    Reference..................................................................................................................... 4-30

 

 

5       WASTE MANAGEMENT IMPLICATIONS............................................................ 5-1

5.1    Introduction.................................................................................................................... 5-1

5.2    Environmental Legislation, Policies, Plans, Standards and Criteria..................................... 5-1

5.2.1        Introduction....................................................................................................... 5-1

5.2.2        Waste Management........................................................................................... 5-1

5.2.3        Construction and Demolition (C&D) Materials.................................................... 5-2

5.3    Assessment Methodology................................................................................................ 5-2

5.4    Identification and Evaluation of Environmental Impacts..................................................... 5-3

5.4.1        Construction Phase............................................................................................ 5-3

5.4.2        Operation Phase................................................................................................ 5-5

5.5    Waste Management Measures......................................................................................... 5-7

5.5.1        Construction Phase............................................................................................ 5-7

5.5.2        Operation Phase.............................................................................................. 5-10

5.6    Contamination Preventive Measures.............................................................................. 5-11

5.6.1        General........................................................................................................... 5-11

5.6.2        Potential Sources of Contamination................................................................... 5-11

5.6.3        Approach to Prevent Land Contamination......................................................... 5-12

5.7    Evaluation of Residual Impacts...................................................................................... 5-16

5.8    Environmental Monitoring and Audit.............................................................................. 5-17

5.9    Conclusion.................................................................................................................... 5-17

 

 

6       WATER POLLUTION................................................................................................ 6-1

6.1    Introduction.................................................................................................................... 6-1

6.2    Environmental Legislation and Standards.......................................................................... 6-1

6.2.1        Water Pollution Control Ordinance (WPCO)....................................................... 6-1

6.2.2        Technical Memorandum..................................................................................... 6-2

6.2.3        Practice Notes.................................................................................................. 6-2

6.3    Baseline Conditions......................................................................................................... 6-2

6.3.1        Inland Waters.................................................................................................... 6-2

6.3.2        Marine Waters.................................................................................................. 6-4

6.4    Water Sensitive Receivers............................................................................................... 6-5

6.5    Assessment Methodology................................................................................................ 6-5

6.6    Identification and Evaluation of Environmental Impacts..................................................... 6-6

6.6.1        Construction Phase............................................................................................ 6-6

6.6.2        Operation Phase.............................................................................................. 6-14

6.7    Mitigation Measures...................................................................................................... 6-18

6.7.1        Introduction..................................................................................................... 6-18

6.7.2        Construction Phase.......................................................................................... 6-18

6.7.3        Operation Phase.............................................................................................. 6-20

6.8    Residual Environmental Impacts..................................................................................... 6-20

6.9    Environmental Monitoring and Audit.............................................................................. 6-20

6.10  Conclusion.................................................................................................................... 6-21

 

 

7       ECOLOGY.................................................................................................................... 7-1

7.1    Introduction.................................................................................................................... 7-1

7.2    Environmental Legislation, Policies, Plans, Standards and Criteria..................................... 7-1

7.3    Assessment Methodology................................................................................................ 7-2

7.3.1        Scope of Ecological Assessment......................................................................... 7-2

7.3.2        Literature Review.............................................................................................. 7-3

7.3.3        Ecology Survey Methodology............................................................................. 7-3

7.3.4        Habitat and Vegetation...................................................................................... 7-4

7.3.5        Impact Assessment Methodology..................................................................... 7-5

7.4    Description of the Environment........................................................................................ 7-5

7.4.1        Areas of Conservation Interest.......................................................................... 7-5

7.4.2        Literature Review.............................................................................................. 7-6

7.4.3        Detailed Ecological Survey Result................................................................... 7-15

7.5    Ecological Value........................................................................................................... 7-25

7.6    Identification of Environmental Impacts.......................................................................... 7-33

7.6.1        Introduction..................................................................................................... 7-33

7.6.2        Construction phase........................................................................................... 7-34

7.6.3        Operation phase............................................................................................... 7-37

7.7    Evaluation of Environmental Impacts.............................................................................. 7-39

7.8    Mitigation Measures...................................................................................................... 7-62

7.8.1        Introduction..................................................................................................... 7-62

7.8.2        Avoidance and Minimization............................................................................. 7-62

7.8.3        Enhancement Measures.................................................................................. 7-65

7.9    Cumulative Impacts....................................................................................................... 7-66

7.10  Evaluation of Residual Impacts...................................................................................... 7-66

7.11  Environmental Monitoring and Audit.............................................................................. 7-67

7.12  Conclusion.................................................................................................................... 7-67

7.13  Reference..................................................................................................................... 7-68

 

 

8.      NOISE IMPACT.......................................................................................................... 8-1

8.1    Background.................................................................................................................... 8-1

8.2    Traffic Noise Criteria under Environmental Impact Assessment Ordinance........................ 8-1

8.3    Assessment Area............................................................................................................ 8-1

8.4    Existing and Planned Sensitive Receivers.......................................................................... 8-1

8.5    Assessment Methodology................................................................................................ 8-3

8.6    Evaluation of Potential Traffic Noise Impact..................................................................... 8-3

8.7    Conclusions.................................................................................................................... 8-4

 

 

9       LANDSCAPE AND VISUAL IMPACT ASSESSMENT.......................................... 9-1

9.1    Introduction.................................................................................................................... 9-1

9.2    Project Description......................................................................................................... 9-1

9.3    Environmental Legislation and Standards.......................................................................... 9-1

9.4    Methodology of Assessment of Landscape Impacts......................................................... 9-2

9.4.1        Introduction....................................................................................................... 9-2

9.4.2        Identification of Baseline Landscape Resources.................................................. 9-3

9.4.3        Assessment of Degree of Sensitivity to Change................................................... 9-3

9.4.4        Identification of Potential Sources of Landscape Impacts..................................... 9-3

9.4.5        Identification of Magnitude of Landscape Impacts............................................... 9-3

9.4.6        Identification of Potential Landscape Mitigation Measures.................................... 9-4

9.4.7        Predicted Significance of Landscape Impacts...................................................... 9-4

9.4.8        Prediction of Acceptability of Impacts................................................................. 9-5

9.5    Methodology of Assessment of Visual Impacts................................................................ 9-5

9.5.1        Introduction....................................................................................................... 9-5

9.5.2        Identification of Zones of Visual Influence (ZVIs)............................................... 9-5

9.5.3        Identification of Visual Sensitive Receivers (VSRs)............................................. 9-5

9.5.4        Assessment of Degree of Sensitivity to Change................................................... 9-5

9.5.5        Identification of Relative Numbers of VSRs........................................................ 9-6

9.5.6        Identification of Potential Sources of Visual Impacts............................................ 9-6

9.5.7        Assessment of Potential Magnitude of Visual Impacts......................................... 9-6

9.5.8        Identification of Potential Visual Mitigation Measures.......................................... 9-6

9.5.9        Prediction of Significance of Visual Impacts........................................................ 9-7

9.5.10      Prediction of Acceptability of Impacts................................................................. 9-7

9.6    Baseline Study................................................................................................................ 9-7

9.7    Review of Planning and Development Control Framework............................................... 9-9

9.8    Landscape Resources..................................................................................................... 9-9

9.9    Landscape Character Areas.......................................................................................... 9-10

9.10  Landscape Sensitivity to Change.................................................................................... 9-11

9.11  Tree Survey Results...................................................................................................... 9-12

9.12  Zone of Visual Influence (ZVI)...................................................................................... 9-12

9.13  Visual Sensitive Receivers (VSRs)................................................................................. 9-13

9.14  Landscape Impact Assessment...................................................................................... 9-15

9.14.1      Sources of Landscape Impacts......................................................................... 9-15

9.14.2      Degree of Compatibility of Project.................................................................... 9-15

9.14.3      Nature and Magnitude of Landscape Impacts.................................................... 9-16

9.14.4      Prediction of Significance of Landscape Impacts............................................... 9-16

9.14.5      Landscape Mitigation Measures........................................................................ 9-17

9.14.6      Programme of Implementation of Mitigation Measures....................................... 9-18

9.14.7      Residual Landscape Impacts............................................................................ 9-18

9.15  Visual Impact Assessment............................................................................................. 9-20

9.15.1      Potential Sources of Visual Impacts.................................................................. 9-20

9.15.2      Prediction of Significance of Visual Impacts...................................................... 9-20

9.15.3      Visual Mitigation Measures.............................................................................. 9-20

9.15.4      Residual Visual Impacts................................................................................... 9-20

9.16  Conclusion.................................................................................................................... 9-22

 

 

10     LANDFILL GAS HAZARD...................................................................................... 10-1

10.1  Introduction.................................................................................................................. 10-1

10.2  Environmental Legislation, Policies, Plans, Standards and Criteria................................... 10-1

10.3  History and General Description of the WENT Landfill.................................................. 10-1

10.4  Potential Landfill Gas Hazards....................................................................................... 10-2

10.5  Landfill Gas Assessment Criteria and Methodology........................................................ 10-2

10.5.1      Landfill Gas Assessment Criteria...................................................................... 10-2

10.5.2      Source............................................................................................................ 10-3

10.5.3      Pathway.......................................................................................................... 10-4

10.5.4      Target............................................................................................................. 10-5

10.6  Assessment of Potential Risk......................................................................................... 10-7

10.6.1      Source............................................................................................................ 10-7

10.6.2      Pathway.......................................................................................................... 10-8

10.6.3      Target............................................................................................................. 10-8

10.6.4      Summary of Qualitative Source-Pathway-Target Analysis.................................. 10-9

10.7  Recommended Protection Measures.............................................................................. 10-9

10.7.1      Introduction..................................................................................................... 10-9

10.7.2      During Construction Phase............................................................................. 10-10

10.7.3      Design of Landfill Gas Protection Measures and other Protection Measures During Operation Phase..................................................................................................................... 10-13

10.8  Conclusions................................................................................................................ 10-14

 

 

11     ENVIRONMENTAL MONITORING AND AUDIT............................................. 11-1

11.1  Introduction.................................................................................................................. 11-1

11.2  Air Quality Impact......................................................................................................... 11-1

11.3  Health Risk................................................................................................................... 11-2

11.4  Waste Management Implications................................................................................... 11-2

11.5  Water Pollution............................................................................................................. 11-3

11.6  Ecological Impact.......................................................................................................... 11-3

11.7  Landscape and Visual Impact........................................................................................ 11-3

11.8  Landfill Gas Hazard....................................................................................................... 11-4

 

 

12     SUMMARY OF ENVIRONMENTAL OUTCOME............................................... 12-1

12.1  Key Environmental Outcomes....................................................................................... 12-1

12.2  Impact Summary........................................................................................................... 12-6

12.2.1      General........................................................................................................... 12-6

12.2.2      Air Quality...................................................................................................... 12-6

12.2.3      Human Health Risk Assessment....................................................................... 12-7

12.2.4      Waste Management Implications...................................................................... 12-7

12.2.5      Water Pollution................................................................................................ 12-8

12.2.6      Ecology........................................................................................................... 12-8

12.2.7      Noise Impact................................................................................................... 12-9

12.2.8      Landscape and Visual Impact Assessment...................................................... 12-10

12.2.9      Landfill Gas Hazard....................................................................................... 12-10

 

 

Appendices

 

Appendix 3.1a   Adjustment of Background NO2 at Black Point Power Station and Castle Peak Power Station

Appendix 3.1b   Adjustment of Background SO2 at Black Point Power Station and Castle Peak Power Station

Appendix 3.1c   Adjustment of Background RSP at Black Point Power Station and Castle Peak Power Station

Appendix 3.2     Emission Inventory for Numerical Modelling (All Potential Air Pollutants)

Appendix 3.3     Detailed Calculations of Emissions from Sludge Treatment Facilities

Appendix 3.4     Detailed Calculations of Emissions from Green Island Cement Plant

Appendix 3.5a   Detailed Calculations of Emissions from Existing WENT Landfill (Operation Year in 2019)

Appendix 3.5b   Detailed Calculations of Emissions from Existing WENT Landfill (Operation Year in 2045)

Appendix 3.5c   Detailed Calculations of Emissions from WENT Landfill Extension (Operation Year in 2045)

Appendix 3.5d   The 10 Years VOC Monitoring Data Record at the Site Boundary of the Existing WENT Landfill

Appendix 3.5e   Flare Removal Efficiency Based on Existing WENT Monitoring Data (5-year Data)

Appendix 3.6     Detailed Breakdowns of Emissions from EcoPark

Appendix 3.7    Detailed Breakdown of Emissions from Shiu Wing Steel Mill

Appendix 3.8     Detailed Calculations of Emissions from Marine Vessels

Appendix 3.9     Detailed Calculations of Emissions from Industrial Chimney

Appendix 3.10   Calculations of Emission Rates from Open Road Sections Using EURO Fleet Average Emission Factor

Appendix 3.11   Sensitivity Test for Emission Rates for Year 2027 A.M. and P.M. Peak Hour Traffic Flows

Appendix 3.12   Detailed Calculations of Odour Emissions

Appendix 3.13   Predicted Cumulative Hourly, Daily and Annual Average NO2 Concentrations in  g/m3 at Various Assessment Height Levels

Appendix 3.14   Predicted Cumulative Hourly, Daily and Annual Average SO2 Concentrations in  g/m3 at Various Assessment Height Levels

Appendix 3.15   Predicted Cumulative Daily and Annual Average RSP Concentrations in  g/m3 at Various Assessment Height Levels

Appendix 3.16   Predicted Cumulative Hourly and Annual Average Concentrations in  g/m3 for Other Pollutants at Various Assessment Height Levels

Appendix 3.17   Hourly and/or Daily Contour Plots for NO2, SO2 and RSP

Appendix 4.1     Risk Assessment Worksheets of Risk Assessment for Microbial Emissions from Dewatered Sewage Sludge

Appendix 7.1     Ecological Field Survey Schedule

Appendix 7.2     Representative Photographs of Habitats

Appendix 7.3     Photographs of Species of Conservation Interest

Appendix 7.4     Plant Species Recorded within the Assessment Area

Appendix 7.5     Photographs Showing Water Levels in East and Middle Lagoons During Survey Periods

Appendix 7.6     Fauna Recorded Within the Assessment Area

Appendix 8.1     Photographs of Representative Noise Sensitive Receivers

Appendix 10.1   Recent WENT Landfill Gas Monitoring Data

Appendix 10.2   EPD/TR8/97 Landfill Gas Hazard Assessment Guidance Note, Chapter 8

Appendix 11.1   Implementation Schedule of Proposed Mitigation Measures

 

 

List of Figures

 

Figure 1.1         Location Plan of Proposed Sludge Treatment Facilities

Figure 2.1         Locations of Potential Sites for STF

Figure 2.2         Project Area Boundary of Sludge Treatment Facilities

Figure 2.3         General Layout of Proposed Sludge Treatment Facilities (STF)

Figure 2.4         General Layout of Incineration System

Figure 2.5         Preliminary Site Boundary of Proposed West New Territories (WENT) Landfill Extensions

Figure 3.1         Locations of Representative Air Sensitive Receivers

Figure 3.2         Locations of Potential Emission Sources

Figure 4.1         Radon Progeny

Figure 6.1         Location of EPD Water Quality Monitoring Stations

Figure 7.1         Habitat Map

Figure 7.2         Location of Line Transects and Intertidal and Freshwater Surveys

Figure 7.3         Breeding Activities of Little Grebe Recorded within Ash Lagoons

Figure 8.1         Locations of Proposed STF and Representative Noise Sensitive Receivers

Figure 8.2a        Location Plan of Representative Noise Sensitive Receivers (Sheet 1 of 2)

Figure 8.2b        Location Plan of Representative Noise Sensitive Receivers (Sheet 2 of 2)

Figure 8.3         Assessment Area for Off-site Traffic Noise Impact Assessment

Figure 9.1         Location Plan for the Project

Figure 9.2         Existing Aerial View of Study Area

Figure 9.3         Landscape Resources

Figure 9.4         Photo of Landscape Resources (sheet 1 of 4)

Figure 9.5         Photo of Landscape Resources (sheet 2 of 4)

Figure 9.6         Photo of Landscape Resources (sheet 3 of 4)

Figure 9.7         Photo of Landscape Resources (sheet 4 of 4)

Figure 9.8         Landscape Character Areas

Figure 9.9         Photo of Landscape Character Area (sheet 1 of 4)

Figure 9.10        Photo of Landscape Character Area (sheet 2of 4)

Figure 9.11        Photo of Landscape Character Area (sheet 3 of 4)

Figure 9.12        Photo of Landscape Character Area (sheet 4 of 4)

Figure 9.13        Visual Sensitive Receivers

Figure 9.14        Photos of Visual Sensitive Receivers (sheet 1 of 4)

Figure 9.15        Photos of Visual Sensitive Receivers (sheet 2 of 4)

Figure 9.16        Photos of Visual Sensitive Receivers (sheet 3 of 4)

Figure 9.17        Photos of Visual Sensitive Receivers (sheet 4 of 4)

Figure 9.18        Views from Visual Sensitive Receivers

Figure 9.19        Views from Visual Sensitive Receivers

Figure 9.20        Landscape Mitigation Measure Plan (sheet 1 of 2)

Figure 9.21        Landscape Mitigation Measure Section (sheet 2 of 2)

Figure 9.22        Photomontage in View 1

Figure 9.23        Photomontage in View 2

Figure 10.1        WENT Landfill Consultation Zone

Figure 10.2        6 Phases of the WENT Landfill Extensions

Figure 10.3A     Plan and Section for Proposed Seawater Pumping Station

Figure 10.3B     General Layout and Section of Incineration System

Figure 10.4A     Typical Design for Services Passing through the Consultation Zone - Special Route Conduit (SRC)

Figure 10.4B     Passive Trench Vent (Outline)

Figure 10.4C     Typical Design of Remote Cut-off Trench Barrier

Figure 10.5        Proposed Locations of Cut-off Trench Barriers

Figure 10.6A     Open Conduit Protection by Water Seal (Longitudinal-section)

Figure 10.6B     Typical Detail of Collar Seal (Cross-section)

Figure 10.6C     Vented Manhole (Cross-section)

 

 

List of Tables

 

Table 2.1          Current and Future Sludge Generation from 11 Sewage Treatment Works in Hong Kong

Table 2.2          Evaluation of Shortlisted Sludge Treatment Technologies

Table 2.3          Summary of Assessment Results for Site Selection

Table 2.4          Target Air Emission Limits

Table 2.5          Construction Programme

Table 2.6          Areas Covered by the EIA Study

Table 3.1          Hong Kong Air Quality Objectives

Table 3.2          Background Air Pollutant Concentrations adopted in this Study

Table 3.3          Adjusted Maximum Hourly, 2nd Highest Daily and Annual NO2, SO2 and RSP Concentrations

Table 3.4          Identified Air Sensitive Receivers

Table 3.5          Target Emission Limits of STF

Table 3.6          Model Assumptions for the Potential Emission Sources

Table 3.7          Conversion Factors to 5 second Average Concentration

Table 3.8          Predicted Cumulative Hourly, Daily and Annual Average NO2 Concentration at Various Assessment Height Level

Table 3.9          Predicted Cumulative Hourly, Daily and Annual Average SO2 Concentration at Various Assessment Height Level

Table 3.10         Predicted Cumulative Daily Average RSP Concentration at Various Assessment Height Level

Table 3.11         Predicted Odour Levels at ASRs

Table 4.1          Identified COCs and Associated Health Hazards

Table 4.2          Identified Potential Human Receptors

Table 4.3          Human Receptor Characteristic Parameter Values

Table 4.4          Inhalation Cancer Slope Factor and Unit Risk Factor for Carcinogenic COCs

Table 4.5          Air Quality Standards/Occupational Exposure Limit Value for COCs Long Term Exposure

Table 4.6          Exposure Limits/Reference Levels for COCs Acute Exposure

Table 4.7          Risk Assessment Criteria for Cancer Risk

Table 4.8          Cancer Risk Arising from Carcinogenic COCs Exposure from STF

Table 4.9          Criteria of Non-carcinogenic Health Impact Arising from Long Term COC Exposure and Background Concentration

Table 4.10         Cumulative Non-carcinogenic Health Impact Arising from Long Term COC Exposure (Near Field)

Table 4.11         Cumulative Non-carcinogenic Health Impact Arising from Long Term COC Exposure (Far Field)

Table 4.12         Criteria for Non-carcinogenic Health Impact Arising from Acute COC Exposure and Background Concentration

Table 4.13         Cumulative Non-carcinogenic Health Impact Arising from Acute COC Exposure (Near Field)

Table 4.14         Cumulative Non-carcinogenic Health Impact Arising from Acute COC Exposure (Far Field)

Table 4.15         Property Words and Guidewords used in HAZOP Workshop

Table 4.16         Risk Matrix

Table 4.17         Summary of Risk Assessment Results

Table 4.18         Radium Equivalent Activities of PFA, FBA and Coal from the Castle Peak Power Station

Table 4.19         Summary of Estimates of Annual Effective Dose Equivalents

Table 5.1          Summary of C&D Material Volumes

Table 5.2          Proposed Incineration Residue Pollution Control Limits

Table 5.3          Summary of Incineration By-products from Operation of STF

Table 5.4          Summary of Waste Handling Procedures and Disposal Routes

Table 5.5          Materials used in the STF Operation with Land Contamination Potential

Table 6.1          Summary of Water Quality Objectives for Coastal Waters of Deep Bay Water Control Zone

Table 6.2          Summary of Water Quality Monitoring Results for Tsang Kok Stream in 2006

Table 6.3          Summary Statistics of Marine Water Quality in the Deep Bay WCZ at Station DM4

Table 6.4          Comparison of Leaching Trial Results with the Background Levels and USEPA Water Quality Standards

Table 6.5          Results of CLP monitoring programme between 1987 and 1988

Table 6.6          Comparison of the Leaching Trial Results with the USEPA Aquatic Life Criteria

Table 6.7          Comparison of the Leaching Trial Results with the New Zealand Guidelines for Fresh and Marine Water Quality

Table 6.8          Comparison of the Leaching Trial Results with the UK Water Quality Standards for the Protection of Saltwater Life

Table 6.9          Chemical Toxicity Data for Aquatic Life

Table 6.10         Summary of Wastewater Generated and Reused in STF

Table 6.11         Summary of Effluent Reuse Standards for Local Effluent Reuse Schemes, USEPA and This Project

Table 6.12         Comparison of Saline Water Discharge from Desalination Plant with Effluent Discharge Standard

Table 7.1          Avifauna of Conservation Interest Previously Recorded From the Ash Lagoons and its Vicinity

Table 7.2          Breeding Activities of Little Grebes Previously Recorded From Ash Lagoons

Table 7.3          Avifauna Previously Recorded from the Ash Lagoons and Vicinity with Populations of Conservation Importance

Table 7.4          Physical and Biological Parameters for Sediment in the Vicinity Water of the Ash Lagoons Recorded from Previous Study (CCPC, 2002).

Table 7.5          Habitats Recorded within the Assessment Area

Table 7.6          Avifaunal Species of Conservation Interest Recorded within the Assessment Area

Table 7.7          Butterfly Species of Conservation Interest Recorded within the  Assessment Area

Table 7.8          Ecological Value of Ash Lagoon in the Assessment Area

Table 7.9          Ecological Value of Secondary Woodland and Grassland / Shrubland in the Assessment Area

Table 7.10         Ecological Value of Orchard and Plantation in the Assessment Area

Table7.11          Ecological Value of Watercourse and Developed Area/Disturbed   Area in the Assessment Area

Table 7.12         Ecological Value of Marine Habitats in the Assessment Area

Table 7.13         Species of Conservation Interest Recorded in the Assessment Area

Table 7.14         Direct Habitat Loss Resulting from the Proposed Works

Table 7.15         Overall Impact Evaluation: Ash Lagoons

Table 7.16         Overall Impact Evaluation: Secondary Woodland and  Grassland/Shrubland

Table 7.17         Overall Impact Evaluation: Orchard and Plantation

Table 7.18         Overall Impact Evaluation: Watercourse and Developed Area/Disturbed Area

Table 7.19         Overall Impact Evaluation: Intertidal and Marine Habitats

Table 7.20         Overall Impacts to Species of Conservation Interest

Table 8.1          Summary of Representative Noise Sensitive Receivers

Table 8.2          Horizontal Distance from STF and Lung Kwu Tang Road to Representative Noise Sensitive Receivers

Table 8.3          Projected Peak Hour Off-site Traffic Flow

Table 8.4          Predicted Noise Levels at Representative NSRs

Table 8.5          Predicted Noise Levels at Representative NSRs in 2027

Table 9.1          Relationship between Receptor Sensitivity and Impact Magnitude in Defining Impact Significance

Table 9.2          List of the Landscape Resources and Landscape Character Area and its Sensitivity to Change

Table 9.3          Visual Sensitive Receivers (VSRs) and their Sensitivity to Change

Table 9.4          Visual Sensitive Receivers (VSRs) and Their Magnitude of Impacts

Table 9.5          Significant Landscape Impacts of the Proposed Works during Construction Phase

Table 9.6          Proposed Landscape and Visual Mitigation Measures for Construction Phase

Table 9.7          Proposed Landscape and Visual Mitigation Measures for Operation Phase

Table 9.8          Significance of Landscape Impacts in the Construction and Operation Phases

Table 9.9          Significance of Visual Impacts in Construction and Operation Phases

Table 10.1         Classification of Risk Category

Table 10.2         Summary of General Categorization of Risk

Table 10.3         Generic Protection Measures for Planning Stage Categorization

Table 10.4         Definition of Control Terms

Table 10.5         Qualitative Risk Assessment Matrix

Table 10.6         Actions in the Event of Landfill Gas Being Detected in Excavations/Confined Areas

Table 12.1         Summary of Key Environmental Outcomes / Benefits