8

TABLE OF CONTENTS

Background of the Project

Purpose of the EIA Study

2 DESCRIPTION OF THE PROJECT

Key Project Requirements

Site Locations and History

Nature, Scope and Benefits of the Project

Size and Design of the project

Project Programme

Interactions with Other Projects

Description of scenarios without the Project

3. Consideration of Alternative Sites

Broad Criteria for Decontamination Works Area

Potential Sites for Decontamination Works

Decontamination Works Areas Outside the Penny’s Bay Development Area

Comparison of Decontamination Works Areas Outside the Penny’s Bay Development Area

4 Land Contamination

Environmental Legislation, Policies, Plans, Standards and Criteria

Site Setting and Physical Characteristics of Study Area

Identification of Sensitive Receivers

Assessment Methodology

Identification of Environmental Impacts

Evaluation of Environmental Impacts

Mitigation for Land Contamination

Environmental Monitoring and Audit Requirements

Conclusions and Recommendations

5 AIR QUALITY IMPACT ASSESSMENT

Assessment Criteria

Baseline Conditions and Air Sensitive Receivers

Identification of Pollutant Sources

Assessment Methodology

Impact Assessment

Cumulative Impacts

Mitigation Measures

6. Waste Management Implications

Environmental Legislation, Standards and Evaluation Criteria

Assessment Methodology

Baseline Condition

Identification of Impacts

Prediction and Evaluation of Environmental Impacts

Mitigation Measures

Conclusion and Recommendations

7. Water Quality

Environmental Legislations, Standards and Evaluation Criteria

Description of the Environment

Water Sensitive Receivers

Assessment Methodology

Identification of Water Quality Impacts

Evaluation of Water Quality Impacts

Summary of Potential Water Quality Impacts

Mitigation of Environmental Impacts

Cumulative Environmental Impacts

Residual Environmental Impacts

8. Ecological IMPACT Assessment

Environmental Legislation, Standards and Guidelines

Assessment Methodology

Description of Existing Ecological Baseline Conditions

Ecological Value

Identification of Ecological Impacts

Prediction of Ecological Impacts

Mitigation of Ecological Impacts

Residual Ecological Impacts

Ecological Monitoring and Audit (EM&A) Requirement

9 CULTURAL HERITAGE

Legislation, Standards, Guidelines & Criteria

Assessment Methodology

Existing Environment

Potential Sources of Impacts

Evaluation of Cultural Heritage Impacts

Mitigation of Adverse Environmental Impacts

10. Summary of environmental outcomes

Land Contamination

Air Quality Impact

Waste Management

Water Quality Impact

Ecological Impact

Impact on Cultural Heritage

11. ENVIRONMENTAL MONITORING AND AUDIT REQUIREMENTS

Land Contamination

Waste Management

Land Contamination

Air Quality Impact

Waste Management

Water Quality Impact

Ecological Impact

Impact on Cultural Heritage

Environmental Monitoring and Audit

Overall Conclusion

13 implementation of mitigation measures

LIST OF FIGURES

Figure 2.1 Site Location Map

Figure 3.1 Potential Decontamination Works Areas

Figure 3.2 Land Status Plan: To Kau Wan

Figure 4.1a As-built Locations of Sampling Boreholes and Trenches (Area 1)

Figure 4.1b As-built Locations of Sampling Boreholes and Trenches (Area 2)

Figure 4.1c As-built Locations of Sampling Boreholes and Trenches (Area 3)

Figure 4.2 Groundwater Level Contour Map

Figure 4.3 Typical Extraction Point, Recharge Point and Groundwater Level Monitoring Locations

Figure 4.4a Sampling Locations with Contamination Found at Area 1 (0.5m Below Ground) (Without Interpolation)

Figure 4.4b Sampling Locations with Contamination Found at Area 1 (1m Below Ground) (Without Interpolation)

Figure 4.4c Sampling Locations with Contamination Found at Area1 (1.5m Below Ground) (Without Interpolation)

Figure 4.4d Sampling Locations with Contamination Found at Area 1 (3.0m Below Ground) (Without Interpolation)

Figure 4.5a Sampling Locations with Contamination Found at Area 2 (0.5m Below Ground (Without Interpolation)

Figure 4.5b Sampling Locations with Contamination Found at Area 2 (1m Below Ground) (Without Interpolation)

Figure 4.5c Sampling Locations with Contamination Found at Area 2 (1.5m Below Ground) (Without Interpolation)

Figure 4.5d Sampling Locations with Contamination found at Area 2 (3.0m Below Ground) (Without interpolation)

Figure 4.6a Sampling Locations with Contamination Found at Area 3 (1m Below ground) (Without Interpolation)

Figure 4.6b Sampling Locations with Contamination Found at Area 3 (2m Below Ground) (Without Interpolation)

Figure 4.6c Sampling Locations with Contamination Found at Area 3 (3m Below Ground) (Without Interpolation)

Figure 4.7 Excavation Plan for Soil Contaminated Areas at Area 1

Figure 4.8 Excavation Plan for Soil Contaminated Areas at Area 2

Figure 4.9 Excavation Plan for Soil Contaminated Areas at Area 3

Figure 4.10 Proposed Remediation Strategy for Non-Dioxin Contaminated Soils

Figure 4.11 Screening Matrix of Process Options for Dioxin Contaminated Soil

Figure 4.12 Schematic of a Typical Single Bio-pile

Figure 4.13 Layout Plan for On-site Solidification at CLS

Figure 4.14 Process Flow Diagram for Thermal Desorption Treatment

Figure 4.15 Decontamination Works Area at To Kau Wan

Figure 4.16 Sections of Dioxin Waste Storage Building

Figure 4.17 Programme for Decontamination Works

Figure 5.1 Locations of Representative Air Sensitive Receivers

Figure 5.2 Contours of Hourly TSP Concentrations (mg/m³) at 1.5m Above Ground Level – Cheoy Lee Shipyard

Figure 5.3 Contours of Daily TSP Concentrations (mg/m³) at 1.5m Above Ground Level – Cheoy Lee Shipyard

Figure 5.4 Contours of Hourly NO₂ Concentration (mg/m³) at 30m Above Ground Level – To Kau Wan

Figure 5.5 Contours of Hourly TOC Concentration (mg/m³) at 20m Above Ground Level – To Kau Wan

Figure 5.6 Contours of Hourly Dioxin Concentrations (pg/m³) at 30m Above Ground Level – To Kau Wan

Figure 6.1a Index of Building

Figure 6.1b Schematic Waste location Plan of Building Q, G/F

Figure 6.1c Schematic Waste location Plan of Building S, G/F

Figure 6.1d Schematic Waste location Plan of Building S, 1/F

Figure 6.1e Schematic Waste location Plan of Building T, G/F

Figure 6.1f Schematic Waste location Plan of Building T, 1/F

Figure 6.1g Schematic Waste location Plan of Building R, G/F

Figure 6.1h Schematic Waste location Plan of Building V, G/F

Figure 6.1i Schematic Waste location Plan of Building W, G/F

Figure 6.1j Schematic Waste location Plan of Building X, G/F

Figure 6.1k Schematic Waste location Plan of Building 8, G/F

Figure 6.1l Schematic Waste location Plan of Building U, G/F

Figure 6.1m Schematic Waste location Plan of Building U, 1/F

Figure 6.1n Schematic Waste location Plan of Building Y, G/F

Figure 6.1o Schematic Waste location Plan of Building Z, G/F

Figure 6.1p Schematic Waste location Plan of Building N, G/F

Figure 6.1q Schematic Waste location Plan of Building O, G/F

Figure 6.1r Schematic Waste location Plan of Building P, G/F

Figure 6.1s Schematic Waste location Plan of Building P, 1/F

Figure 6.1t Schematic Waste location Plan of Building B, G/F

Figure 6.1u Schematic Waste location Plan of Building A, G/F

Figure 6.1v Schematic Waste location Plan of Building A, 1/F

Figure 6.1w Schematic Waste location Plan of Building L, G/F

Figure 6.1x Schematic Waste location Plan of Building K, G/F

Figure 6.1y Schematic Waste location Plan of Building D, G/F

Figure 6.1z Schematic Waste location Plan of Building C, G/F

Figure 6.1aa Schematic Waste location Plan of Building J, G/F

Figure 6.1ab Schematic Waste location Plan of Building I, G/F

Figure 6.1ac Schematic Waste location Plan of Building H, G/F

Figure 6.1ad Schematic Waste location Plan of Building E, G/F

Figure 6.1ae Schematic Waste location Plan of Building G, G/F

Figure 6.2 Layout Plan of Slope Improvement Works

Figure 6.3 Transportation Route : To Kau Wan Decontamination Site

Figure 6.4a Material Handling Methods – General Contaminated Material Requiring Solidification Only

Figure 6.4b Material Handling Methods – General Contaminated Material for Biopiling

Figure 6.5 Material Handling Methods – Dioxins-contaminated Material

Figure 6.6 Transportation Route : Dioxin Condensate to be Tsing Yi CWTC

Figure 7.1 Locations of Reference Routine Water Quality Monitoring Stations

Figure 7.2a Locations of Groundwater Samples with Metal Contaminants Exceeded UK Surface Water Quality Standards (Area 1)

Figure 7.2b Locations of Groundwater Samples with Metal Contaminants Exceeded UK Surface Water Quality Standards (Area 2)

Figure 7.2c Locations of Groundwater Samples with Metal Contaminants Exceeded UK Surface Water Quality Standards (Area 3)

Figure 7.3 Locations of Water Quality Sensitive Receivers

Figure 7.4 Location of the Planned Water Recreation Centre at Penny’s Bay

Figure 8.1 Habitat Map – Cheoy Lee Shipyard (2 Sheets)

Figure 8.2 Habitat Map – To Kau Wan (2 Sheets)

Figure 8.3a Photographic Records of Representative Habitats in the Project Area

Figure 8.3b Photographic Records of Representative Habitats in the Project Area

Figure 8.3c Photographic Records of Representative Habitats in the Project Area

Figure 8.4a Photographic Records of Restricted or Protected Species / Habitats Directly Affected by the Project

Figure 8.4b Photographic Records of Restricted or Protected Species / Habitats Directly Affected by the Project

Figure 8.5a Location of Species Scheduled for Transplantation

Figure 8.5b Location of Species Scheduled for Transplantation

Figure 8.5c Location of Species Scheduled for Transplantation

Figure 8.6 General Location of Wetland Receptor Site, Tai Tam Country Park

Figure 8.7 General Design of Recreated of Recreated Oryzias curvinotus Habitat above Channelised Stream

Figure 9.1 Locations of Survey Areas

Figure 9.2 Artifacts Recovered at Cheoy Lee Shipyard (4 Sheets)

Figure 9.3 Proposed Rescue Excavation and Site Monitoring Zone at Cheoy Lee Shipyard

TABLE OF CONTENTS

Appendix 4A	Action Levels for Soil Remediation
Appendix 4B	Elevated PID Readings of Soil Samples
Appendix 4C	Results of Groundwater Level Measurements
Appendix 4D	Groundwater Screening Criteria for Chemicals with Detectable Concentration
Appendix 4E	Details of Risk Assessment for Groundwater
Appendix 4F	Laboratory Results of Physical Tests for Soil Samples
Appendix 4G	Cleanup Targets for Soil Remediation
Appendix 4H	Soil Test Results of Site Investigation at CLS
Appendix 4I	Remedial Investigation / Remedial Alternatives Evaluation and Remedial Action Work Plan prepared by IEC
Appendix 5A	Performance of Thermal Desorption Unit
Appendix 5B	Calculation of Emission Rates
Appendix 5C	Sample Output Files for Air Dispersion Models
Appendix 8A	Habitats and Vegetation Recorded in the Assessment Areas During Surveys Conducted 1999-2001