CONTENTS

Chapter

1........... Introduction

1.1........ Project Background

1.2........ Background to this EIA

1.3........ Purpose and Approach of the EIA Study

1.4........ Structure of this EIA Study Report

2........... PROJECT DESCRIPTION

2.1         Location and Description of the Project

2.2         Need of the Project

2.3         Scenarios With and Without the ProjeCT

2.4         Consideration of Alternative Treatment Level

2.5         Consideration of Alternative Design, Layout and Outfall Alignment

2.6         Consideration of Alternative Construction Methods and Sequence of Works

2.7         Selection of Preferred Scenario

2.8         Programme

2.9         Public Consultations

2.10       Project Interfaces and Concurrent Projects

3........... AIR QUALITY IMPACT ASSESSMENT

3.1         Introduction

3.2         Legislation Requirement & Assessment Criteria

3.3         Baseline Condition

3.4         Air Sensitive Receivers

3.5         Potential Sources of Impact

3.6         Impact Assessment

3.7         Mitigation Measures

3.8         Residual Impacts

3.9         Environmental Monitoring & Audit

3.10       Conclusions

4........... NOISE IMPACT ASSESSMENT

4.1         Introduction

4.2         Relevant Legislation, Policies, Standards and Criteria

4.3         Baseline Conditions

4.4         Noise Sensitive Receivers

4.5         Potential Sources of Impacts

4.6         Assessment Methodology

4.7         Impact Assessment

4.8         Mitigation Measures

4.9         Residual Impacts

4.10       Cumulative Impacts

4.11       Monitoring and Audit Requirement

4.12       Conclusion

 

5........... water quality  IMPACT ASSESSMENT

5.1         Introduction

5.2         Legislation Requirement & Guidelines

5.3         Baseline Condition

5.4         Water Quality Sensitive Receivers

5.5         Assessment CriteriA

5.6         ASSESSMENT METHODOLOGY

5.7         Potential Sources of Impact

5.8         Impact Assessment

5.9         Mitigation Measures

5.10       Residual Impacts

5.11       Cumulative Impacts

5.12       Environmental Monitoring and Audit

5.13       Conclusion

6........... WASTE management IMPLICATION and Land Contaminationn assessment

6.1         Introduction

6.2         Relevant Legislation, Policies, Standards and Criteria

6.3         Assessment Methodology

6.4         Sources and Types of Waste arising from the Project

6.5         Impact Assessment and Evaluation

6.6         Mitigation Measures

6.7         Land Contamination

6.8         Evaluation of Residual Impacts

6.9         Environmental Audit

6.10       Summary

7........... Ecological Impact Assessment (Terrestrial and Marine)

7.1         Introduction

7.2         Legislative Requirements & Evaluation Criteria

7.3         Baseline Conditions

7.4         Impact Identification

7.5         Impact Assessment

7.6         Impact Evaluation

7.7         Mitigation Measures

7.8         Cumulative Impact

7.9         Residual Impact

7.10       Environmental Monitoring & Audit (EM&A)

7.11       Conclusions

8........... Fisheries Impact Assessment

8.1         Introduction

8.2         Relevant Legislation & Assessment Criteria

8.3         Baseline Conditions & Fisheries Sensitive Receivers

8.4         Assessment Methodology

8.5         Potential Impacts & Impact Assessment on Fisheries Resources

8.6         Impact Evaluation

8.7         Mitigation Measures

8.8         Residual Impacts

8.9         Cumulative Impacts

8.10       Environmental Monitoring & Audit

8.11       Conclusions

9........... LANDSCAPE AND VISUAL IMPACT ASSESSMENT

9.1         Introduction

9.2         Environmental  Legislation, Standards and Guidelines

9.3         Assessment Area

9.4         Assessment Methodology

9.5         Planning and Development Control Framework

9.6         Findings of Baseline Study

9.7         Potential Sources of Landscape and Visual Impact

9.8         Landscape Impact Assessment

9.9         Cumulative Landscape Impacts

9.10       Visual Impact Assessment

9.11       Cumulative Visual Impacts

9.12       Conclusions

10........ cultural heritage IMPACT aSSESSMENT

10.1       Introduction

10.2       Relevant Legislations, Standards and Guidelines

10.3       Built Heritage Impact Assessment

11........ summary of environmental outcomes

11.1       Introduction

11.2       Air Quality Impact

11.3       Noise ImpaCT

11.4       Water Quality Impact

11.5       Waste Management Implication and Land Contamination

11.6       Ecological Impact (Terrestrial And Marine)

11.7       Fisheries Impact

11.8       Landscape and Visual Impacts

11.9       Cultural Heritage

11.10    Environmental Benefits of the Project

11.11    Environmentally Friendly Design Recommended

11.12    Key Environmental Problems Avoided, Population and Environmentally Sensitive Areas Protected

12........ environmental monitoring and audit (EM&a) requirements

12.1       Introduction

12.2       Objective of EM&A

12.3       Air Quality

12.4       Noise

12.5       Water Quality

12.6       Waste Management

12.7       Ecology

12.8       FISHERIES

12.9       Landscape and Visual Impact

12.10    Cultural Heritage

13........ Conclusion

13.1       project background

13.2       purpose and nature of the project

13.3       purpose and approach of the eia study

13.4       justification for the need of the project

13.5       project components and project layout

13.6       site location and history

13.7       project programme

13.8       consideration of alternative treatment level, design, layout, outfall alignment, construction methods and sequence of works

13.9       air quality

13.10    noise

13.11    water quality

13.12    waste management and land contamination

13.13    ecology

13.14    fisheries

13.15    landscape & visual

13.16    cultural heritage

13.17    environmental monitoring & audit

13.18    overall conclusion

 

Drawings

Figure 1.1

Key Location Plan

Figure 2.1a

Proposed Layout Plan

Figure 2.1b

Proposed Layout Plan

Figure 2.1c

Aerial Photo of Existing STKSTW

Figure 2.2

Schematic Process Flow Diagram of STKSTW

Figure 2.3

Schematic Process Flow Diagram of Temporary Sewage Treatment Plant

Figure 2.4a

General Layout Plan of Expanded STKSTW and Temporary STP

Figure 2.4b

General Layout Plan of Expanded STKSTW

Figure 2.5

Roof Plan of Expanded STKSTW

Figure 2.6

+15.25mPD Floor Plan of Expanded STKSTW

Figure 2.7

+11.25mPD Floor Plan of Expanded STKSTW

Figure 2.8

+5.25mPD Floor Plan of Expanded STKSTW

Figure 2.9

-0.80mPD Level Plan of Expanded STKSTW

Figure 2.10

Section A-A & B-B

Figure 2.11

Elevation A & B

Figure 2.12

Elevation C & D

Figure 2.13

Elevation E & F (of Temporary STP)

Figure 2.14

Elevation G & H (of Temporary STP)

Figure 2.15

Options for Proposed Submarine Outfall

Figure 2.16

Options for Gravity Sewer

Figure 2.17

Typical Horizontal Direction Drilling Method for Submarine Outfall Construction

Figure 2.18

Expansion Scheme – Option 1

Figure 2.19

Expansion Scheme – Option 2

Figure 2.20

Expansion Scheme – Option 3

Figure 2.21

Dredging Area under Concurrent Project “Sediment Removal at Sha Tau Kok Fish Culture Zone, Boast Shelter and Approach Channel”

Figure 2.22

Works Area under Concurrent Project “Drainage Improvement Works at North District, including Various Drainage Improvement Measures in Sha Tau Kok”

Figure 2.23

Location of Concurrent Project “The Construction of the Public Rental Housing Estate at Sha Tau Kok under Hong Kong Housing Society’s Project”

Figure 2.24

Alternative Layout  Plan of Expanded STKSTW

Figure 2.25

Elevation I

Figure 3.1

Locations of Representative Air Sensitive Receivers

Figure 3.2

Predicted Maximum 5-second Averaged Odour Concentration at 1.5m Above Ground during Operation of Temporary Sewage Treatment Plant

Figure 3.3

Predicted Maximum 5-second Averaged Odour Concentration at 10.5m Above Ground during Operation of Temporary Sewage Treatment Plant

Figure 3.4

Predicted Maximum 5-second Averaged Odour Concentration at 1.5m Above Ground during Operation of Permenant Sewage Treatment Works

Figure 3.5

Predicted Maximum 5-second Averaged Odour Concentration at 10.5m Above Ground during Operation of Permanent Sewage Treatment Works

Figure 4.1

Location Plan of Proposed Noise Monitoring Station and Noise Sensitive Receivers

Figure 5.1

Water Sensitive Receiver near the Project

Figure 5.2

Locations of Geophysical Survey Locations

Figure 5.3

Consideration of Concurrent Projects

Figure 7.1

Project Layout and the Surrounding Ecological Resources

Figure 7.1a

Project Layout and the Surrounding Ecological Resources (500m Study Area)

Figure 7.2

100m No Works Boundary from the Night Roosting Site

Figure 8.1

Distribution of Fishing Operation Vessels in Hong Kong Water as recorded by Agriculture, Fisheries and Conservation Department in Port Survey 2006

Figure 8.2

Distribution of Fishing Production (Adult Fish) in terms of Weight (kg/ha) in Hong Kong Water as recorded by Agriculture, Fisheries and Conservation Department in Port Survey 2006

Figure 8.3

Distribution of Fishing Production (Adult Fish & Fish Fry) in terms of Value (HK$/ha) in Hong Kong Water as recorded by Agriculture, Fisheries and Conservation Department in Port Survey 2006

Figure 8.4

Distribution of Fishing Production (Fish Fry) in terms of Density (tails/ha) in Hong Kong Water as recorded by Agriculture, Fisheries and Conservation Department in Port Survey 2006

Figure 8.5

Fisheries Sensitive Receivers

Figure 9.1

Extent of Landscape Impact Assessment

Figure 9.1a

Aerial View of Landscape Assessment Area

Figure 9.2

Plan of ZVI and VSRs

Figure 9.2a

Visual Condition

Figure 9.3

Plan of Land Use Zoning

Figure 9.4

Location Plan of Landscape Resources

Figure 9.4a-k

Photographs of Landscape Resources (1) – (11)

Figure 9.5

Location Plan of Landscape Character Area

Figure 9.5a-d

Photographs of Landscape Character Areas (1) – (4)

Figure 9.6a-i

Views of Visually Sensitive Receivers (1) – (9)

Figure 9.7

Impacts on Landscape Resources

Figure 9.8

Impacts on Landscape Character Area

Figure 9.9

Recommendation Mitigation Measures (1)

Figure 9.9a

Recommendation Mitigation Measures (2)

Figure 9.10

Visual Impacts

Figure 9.11

Plan of Photomontages

Figure 9.11a-i

Photomontages

Figure 9.12

View of Existing Site and Proposed TSTP

Figure 10.1

Study Area of Built Heritage Impact Assessment

Figure 10.2

Identified Built Heritage at Ha Tam Shui Hang & Sha Tau Kok

 

Appendices

Annex 2A

Emergency Response Plan

Annex 3A-1

Odour Emission Rate Estimation for Permanent Sha Tau Kok Sewage Treatment Works (STKSTW) and Temporary Sewage Treatment Plant (TSTP)

Annex 3A-2

Emission Input to Model

Annex 3A-3

Calculation of Odour Emission rate in STKSTW

Annex 3A-4

Calculation of Odour Emission rate in TSTP

Annex 4A

Summary of Baseline Noise Monitoring

Annex 4B

Photos of Noise Sensitive Receivers

Annex 4C

Details of Construction Noise Impact Assessment

Annex 4D

Details of Operational Noise Impact Assessment of Expanded STKSTW

Annex 4E

Details of Operational Noise Impact Assessment of TSTP

Annex 5A

Water Quality  Modelling Methodology Statement

Annex 5B

Detailed CORMIX Modelling Results

Annex 5C

Technical Note on Delft3D Water Quality Model

Annex 5D

Construction Phase Sediment Plume Modelling Results

Annex 5E

Sediment Testing Report

Annex 5F

Construction Phase Pollutant Release Modelling Results

Annex 5G

Delft3D WAQ Outfall Tracer Simulation

Annex 5H

Delft3D WAQ Modelling Results 2030 baseline and Expanded STKSTW

Annex 5I

Method Statement for Emergency Discharge Modelling for the TSTP and the Expanded STKSTW Operation

Annex 5J

Counter Plot Results For The Emergency Discharge Modelling

Annex 5K

Timeseries Results For The Emergency Discharge Modelling At Nearby Mariculture Zones

Annex 5L

Loading Calculation for TSTP

Annex 5M

Assessment of Potential Water Qality Impact at Hong Kong Mainland Marine Border

Annex 6A

EPD Sediment Sampling and Testing Plan

Annex 6B

Sediment Quality Report

Annex 6C

Historical Aerial Photos

Annex 6D

Existing Site Conditions of the Works Area

Annex 6E

Correspondence from Relevant Authorities

Annex 6F

Site Walkover Checklist - STKSTW

Annex 6G

Site Walkover Checklist - STKSPS

Annex 7A<