Environmental Impact Assessment Proposed Development at Fung Lok Wai, Yuen Long
CH2M HILL Hong Kong Limited in
association with RPS ADI Ltd. Archaeological
Assessments MVA Hong Kong Limited Reference R228-2.07 Client Mutual Luck Investment Limited Date July
2008 |
TABLE OF CONTENTS
1.2 Historical
Land Use of the Site
1.3 Ecological
Importance of Fish Ponds
1.5 Objectives
of the EIA Study
2.1 The
Proposed Development and the Environs
2.2 Construction
of the Project
2.3 Potential
Concurrent Projects that Could Lead to Cumulative Impacts
3. Consideration
of alternatives schemes
3.3 Modifications
of the development proposal to meet the identified constraints
3.4 Shifting
of Residential Development Area
3.5 Alternative
Route for Development Access
3.6 Establishment
of a potential alternative egretry within the Wetland Nature Reserve
3.7 Consideration
of Alternative Building Heights
3.8 Comparison
of Development Options
3.9 The
Preferred Development Option
4.2 Legislation
and Guidelines
5.2 Background
Information and Relevant Studies
5.3 Possible
Cumulative Impact
5.8 Impacts
Summary and Conclusion
6. Water
quality impact assessment
6.2 Description
of Existing Water Systems and Respective Catchments
6.3 Characterisation
of Baseline Water & Sediment Quality
6.4 Existing
and Planned Activities In Relation to Water Systems
6.5 Identification
of Alteration of Water Systems Arising from the Project
6.6 Identification
of Existing and Future Water & Sediment Pollution Sources
6.7 Identification
of Water Sensitive Receivers
6.8 Water and
Sediment Quality Assessment Criteria and Existing Policies
6.9 Water and
Sediment Quality Impact Assessment
6.10 Recommendations
of Mitigation Measures
7. Potential
Problem of Biogas
7.3 Field
Sampling and Laboratory Analysis
7.5 Estimation
of potential Gas Emissions
7.6 Evaluation
of Significance of Potential Gas Emissions
7.7 Monitoring,
Mitigation and Precautionary Measures
7.8 Impacts
Summary and Conclusion
8. Sewerage
and Sewage Treatment Implications
8.2 Existing
Sewage Disposal and Treatment Facilities
8.3 Planned
Sewage Disposal and Treatment Facilities in the Area
8.4 Planned
Population and Sewerage Flows Projections
8.5 Proposed
Development, Sewerage Options and Projection
8.6 Adequacy
of Existing and Planned Sewerage and Treatment Facilities to accept flows
8.7 New &
Upgrading Works of Sewerage Systems Required for Either Options
8.8 Environmental
Impacts of Sewerage Systems
9.2 Legislation
and Guidelines
9.3 Analysis
of Activities and Waste Generation
9.4 Proposal
for Waste Management
9.5 Impacts
Summary and Conclusion
10. cultural
heritage impact assessment
10.2 Objectives
of the Cultural Heritage Impact Assessment (CHIA)
10.5 Historical
Buildings and Structures Survey
10.6 Historical
Landscape Features Survey
10.7 Summary of
the CHIA Findings and Recommendations
11. LANDSCAPE
AND VISUAL IMPACT ASSESSMENT
11.2 Standards
and Legislation
11.3 Landscape and Visual Impact Assessment
Methodology
11.4 Selection
of the Preferred Option
11.5 Review of
Planning and Development Control Framework
11.6 Review of
Study on the Ecological Value of Fish Ponds in Deep Bay Area
11.7 Existing
Landscape Context
11.8 Landscape Impact Assessment
11.9 Existing
Visual Context and Visual Impacts
11.12 Programme for Landscape Works
11.13 Operational (Residual) Landscape and Visual
Impacts
12. Fisheries
impact assessment
12.3 Description
of the Physical Environment
12.5 Impact
Identification and Assessment
12.6 Fisheries
Mitigation / Compensation Measures
12.7 Monitoring
and Audit Programme
13. Ecological
impact Assessment
13.2 Description
of the Physical Environment
13.4 Review of
Recognised Sites of Conservation Importance in the Vicinity of Fung Lok Wai
13.6 General
Ecological Profile and Evaluation of Valued ecological Components
13.7 Identification
of Potential Impacts
13.10 Identification
and evaluation of residual ecological impacts
13.11 Ecological
Monitoring and Audit
14. Draft
Habitat creation and Management PLan FOR the Wetland NaTure Reserve
14.1 Study
background and objectives
14.3 Detailed
design and construction methods
14.5 Monitoring
and action plans
14.6 HCMP
Reporting and Review process
15. The Long-term Management OF the Wetland NAture Reserve
15.2 Overview of
Wetland Nature Reserve Management Arrangements
15.3 Management
of the Wetland Nature Reserve
16. Environmental monitoring and audit (EM&A) requirements
16.2 Objectives
of Environmental Monitoring and Audit
16.3 Summary of
Areas Requiring EM&A
16.11 Implementation
Schedule of Environmental Mitigation Measures
17. Summary of environmental outcomes and overall conclusion
17.6 Potential
Problem of Biogas
17.7 Sewerage
and Sewerage Treatment Implications
17.9 Ecological
Impact Assessment
17.10 Fisheries
Impact Assessment
17.11 Cultural
Heritage Impact Assessment
17.12 Landscape
and Visual Impact Assessment
Volume 3
LIST OF APPENDICES
Appendix 4-1 Calculation of Particulate Emission Rates for Fugitive Dust Impact Assessment
Appendix 4-2 Typical FDM Result File for Fugitive Dust Impact Assessment
Appendix 5-1 PME Equipment Inventory for Construction Noise Impact Assessment
Appendix 5-2 Typical
Calculation Worksheet for Construction Noise Impact Assessment
Appendix 5-3 Silenced PME Equipment Inventory for Construction Noise Impact Assessment
Appendix 5-4 Typical
Calculation Worksheet for Construction Noise Impact Assessment
Appendix 5-5 Reduced
SWL of the PME when noise barriers and machinery enclosures applied
Appendix 5-6 Typical
Calculation Worksheet for Construction Noise Impact Assessment
(Silenced PME with noise barriers and machinery enclosures)
Appendix 8-1 Sewerage Impact Assessment
Appendix 10-1 Historical buildings and Structures Catalogue
Appendix 11-1 Preliminary Tree Survey Report
Appendix 13-1 Ramsar Classification System for Wetlands
Appendix 13-3 Vegetation survey results, site wide excluding route of original proposed access road.
Appendix 13-4 Aquatic invertebrates recorded at Fung Lok Wai during the required survey period.
Appendix 13-5 Odonata species recorded at Fung Lok Wai during the required survey period.
Appendix 13-6 Butterfly species recorded at Fung Lok Wai during the required survey period.
Appendix 13-7 Fish species recorded during surveys at Fung Lok Wai
Appendix 13-8 Amphibian species recorded during surveys at Fung Lok Wai
Appendix 13-9 Reptile species recorded during surveys at Fung Lok Wai
Appendix 13-10 Summary bird survey results from transects T1-5 and T7
Appendix 13-11 Summary bird survey results from transect T6
Appendix 13-12 Analysis of recent bird records within the Deep Bay area
Appendix 14-1 Generic Bund Designs
Appendix 14-4 Specification for footpaths/ broad walks
Appendix 14-5 Indicative design of hides
Appendix 14-6 Details
of Floating Platforms
Appendix 16-1 Implementation Schedule of Recommended Environmental Mitigation
Measures
LIST OF ANNEX
Annex A Proposal for the Management of HKSAR WETLAND NATURE FOUNDATION
LIST OF FIGURES
Figure
1‑1 The Proposed Development
Figure 2‑1 The
Proposed Development and the
Environs
Figure 2‑2 Extract
of Tin Shui Wai, Lau Fau Shan & Tsim Bei Tsui Zoning Plan
Figure 2‑3 Tentative
MLP of the Proposed Residential
Development
Figure 2‑4 The Assessment Area
Figure 2‑5 Tentative
Layout Plan of Wetland Nature Reserve
Figure 2‑6 Existing
Drainage and Catchment Area in the Vicinity
Figure 2‑7 Tentative
Construction Programme for the Project
Figure 2‑8 The
Proposed Access Road of the Development
Figure 2‑9 Pond
Numbering System Used Prior to
WNR Establishment
Figure 2‑10 Pond
Enhancement Sectors of the Proposed WNR
Figure 2‑11 Locations
of New Bunds and the Removal / Modification
Sequence of the Bunds
Figure 2‑12 Possible
Concurrent Projects in the
Vicinity
Figure 3‑1 The
Original Preliminary Layout of the Project
Figure 3‑2 The
Modified Development
Figure 3‑3a The
Three Building Height Scenarios – Option 1A
Figure 3‑3b The Three
Building Height Scenarios – Option 1B
Figure 3‑3c The Three
Building Height Scenarios – Option 1C
Figure 3‑4 Photomontages
of the Three Building Height Scenarios
Figure 3‑5 Original Location and Shifted Location of
the Proposed Residential Development
Figure 4‑1 Location
of Representative ASRs for Construction Dust Impact Assessment
Figure 4‑2 The
Alignment of Haul Roads, Locations
of Representative Emission Points of Stage A
Figure 4‑3 The
Alignment Of Haul Roads, Locations Of Representative Emission Points Of Stage B
Figure 4‑4 Mitigated
Maximum Hourly Average
TSP Concentrations Predicted at 10.0 mPD under Stage A
Figure 4‑5 Mitigated
Daily Average TSP Concentrations
Predicted at 5.3mPD under Stage A
Figure 4‑6 Mitigated
Maximum Hourly Average
TSP Concentrations Predicted at 6.3mPD under Stage B
Figure 4‑7 Mitigated
Maximum Daily average TSP Concentrations Predicted at 6.3mPD under Stage B
Figure 5‑2 The
Noise Sensitive Receivers around the Site
Figure 5‑3 Construction
Area for Access Road, Residential Site and Wetland Nature Reserve
Figure 6‑1 The
Assessment Area of the Water
Quality Impact Assessment
Figure 6‑2 Existing
Water Systems and Respective Catchments
Figure 6‑3 Locations of EPD’s Water Quality Monitoring
Stations in Deep Bay
Figure 6‑4 Locations of EPD’s Marine Sediment Quality
Monitoring Stations in Deep Bay
Figure 6‑6 Locations
of Sampling Ponds for Fishpond Water Quality
Figure 6‑7 Locations
of Sampling Ponds for Fishpond Sediment Quality
Figure 6‑8 Sampling
Locations for River Water Quality
Figure 6‑9 21
Larger Ponds will be Consolidated in the WNR
Figure 6‑10 Details
of Marsh Structure
Figure 6‑11 Drainage
Channel X and Y for Water Discharge in the WNR
Figure 6‑12 Daily
Variation of Rainfall from 1989 to 1998
Figure 6‑13 Discharge
Volume from Water Ponds within the Site from 1989 to 1998
Figure 7‑1 Locations
of Sediment Sampling Ponds for Biogas Investigation
Figure 8‑1 Existing Sewerage Systems near the Subject Site
Figure 8‑2 The
YLSTW Effluent Pipelines and its Alternative
of the YLKTSSD Stage 2
Figure 8‑3 The
Sub-catchment of Sewerage Network under Tin Wah Road
Figure 8‑4 Proposed
Sewerage Options
Figure 8‑5 Total
Flow to Yuen Long STW from 2000
to 2016
Figure 10‑1 Location
of the Study Area in Hong Kong
Figure 10‑2 Aerial
View of Study Area 1949 (GEO Ref.# YO2388)
Figure 10‑3 Aerial
View of Study Area 1963 (GEO Ref.# YO9690 )
Figure 10‑4 Aerial
View of Study Area 2000 (GEO Ref.# CN26484 )
Figure 10‑5 Photographs
Illustrating Examples of Structures in the Study Area
Figure 10‑6 Map
Showing the Locations of Historical Structures in Shing Uk Tsuen
Figure 10‑7 Map
Showing the Locations of the Historical Structures in Tai Tseng Wai
Figure 10‑8a Map Showing
the Locations of the Historical Structures in Ng Uk Tsuen
Figure 10‑8b Map Showing
the Locatios of the Tin Hau Temple near Ng Uk Tsuen
Figure 10‑9 Map
Showing the Locations of Graves and Fung Shui Wood
Figure 10‑10 Aerial
View of the Study Area 1924 (GEO Ref.# Y00159)
Figure 11‑1A Alternative
Building Height Profiles
Figure 11‑1B Alternative
Block Plans – Option 1A
Figure 11‑1C Alternative
Block Plans – Option 1B
Figure 11‑1D Alternative
Block Plans – Option 1C
Figure 11‑2 Landscape Resources
Figure 11‑3 Preliminary
Tree Survey Plan
Figure 11‑4 Landscape
CharacterAreas
Figure 11‑5A Landscape
Character Area Photograph
Figure 11‑5B Landscape
Character Area Photograph
Figure 11‑6 Visual
Envelope and Zone of Visual Influence
Figure 11‑7 Visual
Characteristics of the Study Area
Figure 11‑8 Review
of Planning and Development Control Framework
Figure 11‑9 Impacts
on Landscape Resources Option 1A and 1B
Figure 11‑10A Visual Impacts for Option 1A_
Figure 11‑10B Visual Impacts for Option 1B_
Figure 11‑11A Design Concept
Drawing and Recommended Landscape Mitigation Measures for Option 1A
Figure 11‑11B Landscape
Master Plan for Option 1A
Figure 11‑12A Design Concept
Drawing and Recommended Landscape Mitigation Measures for Option 1B
Figure 11‑12B Landscape
Master Plan for Option 1A
Figure 11‑13A Section A-A’ for Option 1A
Figure 11‑13B Section B-B’ for Option 1A
Figure 11‑13C Section A-A’ for Option 1B
Figure 11‑13D Section B-B’ for Option 1B
Figure 11‑14A Photomontages– Vantage Point A – Option 1A
Figure 11‑14B Photomontages– Vantage Point A – Option 1A
Figure 11‑14C Photomontages– Vantage Point B – Option 1A
Figure 11‑14D Photomontages– Vantage Point B – Option 1A
Figure 11‑14E Photomontages– Vantage Point C – Option 1A
Figure 11‑14F Photomontages– Vantage Point C – Option 1A
Figure 11‑14G Photomontages– Vantage Point D – Option 1A
Figure 11‑14H Photomontages– Vantage Point D – Option 1A
Figure 11‑14I Photomontages– Vantage Point E – Option 1A
Figure 11‑14J Photomontages– Vantage Point E – Option 1A
Figure 11‑14K Photomontages– Vantage Point F – Option 1A
Figure 11‑14L Photomontages– Vantage Point F – Option 1A
Figure 11‑14MPhotomontages– Vantage Point G – Option 1A
Figure 11‑14N Photomontages– Vantage Point G – Option 1A
Figure 11‑14O Photomontages– Vantage Point H – Option 1A
Figure 11‑14P Photomontages– Vantage Point H – Option 1A
Figure 11‑15A Photomontages– Vantage Point A – Option 1B
Figure 11‑15B Photomontages– Vantage Point A – Option 1B
Figure 11‑15C Photomontages– Vantage Point B – Option 1B
Figure 11‑15D Photomontages– Vantage Point B – Option 1B
Figure 11‑15E Photomontages– Vantage Point C – Option 1B
Figure 11‑15F Photomontages– Vantage Point C – Option 1B
Figure 11‑15G Photomontages– Vantage Point D – Option 1B
Figure 11‑15H Photomontages– Vantage Point D – Option 1B
Figure 11‑15I Photomontages– Vantage Point E – Option 1B
Figure 11‑15J Photomontages– Vantage Point E – Option 1B
Figure 11‑15K Photomontages– Vantage Point F – Option 1B
Figure 11‑15L Photomontages– Vantage Point F – Option 1B
Figure 11‑15MPhotomontages– Vantage Point G – Option 1B
Figure 11‑15N Photomontages– Vantage Point G – Option 1B
Figure 11‑15O Photomontages– Vantage Point H – Option 1B
Figure 11‑15P Photomontages– Vantage Point H – Option 1B
Figure 12‑1 Location
and Layout of the Assessment
Area
Figure 12‑2 Sequence
of Pond Enhancement Works
Figure 13‑1 Site
Outline and Extent of Ecological Assessment Areas
Figure 13‑2 Location
of Ecologically Sensitive Receivers near the Fung Lok Wai Site
Figure 13‑3 Vegetation
Survey Quadrat Locations
Figure 13‑4 Aquatic
Invertebrate Sampling Locations
Figure 13‑5 Insect
and Herpetofauna Transect Routes
Figure 13‑6 Freshwater
Fish Survey Locations
Figure 13‑7 Bird
Survey Transect Locations
Figure 13‑8 Location
of Current Egretry and Flightline Survey Observers
Figure 13‑9 Distribution
of Habitat Types within the Study Area
Figure 13‑10 Flight
line Survey Results for the Entire Study Site at Fung Lok Wai
Figure 13‑11 Flight
Lines Associated with the Fung Lok Wai
Egretry
Figure 13‑13 Habitat
Enhancement Work Programme for
The Fung Lok Wai WNR
Figure 14‑1 Location
of the Fung Lok Wai Wetland Nature Reserve
Figure 14‑2 Average
Monthly Rainfall, Evaporation
and Deficits at Fung Lok Wai.
Figure 14‑3 Existing
Water Systems and Respective
Catchments
Figure 14‑4 Broad Layout of the Wetland Nature Reserve
Figure 14‑5 Details of Habitat Layout within the Wetland
Nature Reserve
Figure 14‑6 Developments Associated with the Construction
of the Wetland Nature Reserve
Figure 14‑7 Location
of Aquaculture Pond Habitat Features
and Water Control Structures
Figure 14‑8 Details of Marsh Habitats and Infrastructure
Figure 14‑9 Habitats within the Constructed Marsh Area
Figure 14‑10 Status of Storage Pond under Normal and Extreme Rainfall Scenarios
Figure 14‑11 Management Compartments for the Mai Po and Inner Deep Bay Ramsar Site
Figure 14‑12 Proposed Layout of Footpaths
Figure 14‑13 Pond
Enhancement Sectors
Figure 14‑14 Definition
of Operating Water Levels for Ponds
LIST OF TABLES
Table
2‑1 Basic
Parameters of the Proposed Residential Development
Table 2‑2 Habitat
Enhancement Work Programme For The Fung Lok Wai WNR
Table 3‑1 Comparison
of the Two Access Options
Table 4‑1 Hong Kong Air Quality Objectives
Table 4‑3 Representative
ASRs for the Dust Emission Impact Assessment
Table 4‑4 Predicted
Unmitigated TSP Level at selected ASRs
Table 4‑5 Predicted
mitigated TSP Level at selected ASRs
Table 5‑1 Noise
Limits for Daytime Construction Activities
Table 5‑2 Key
Construction Activities for Construction Noise Impact Assessment
Table 5‑3 Representative
Assessment Phases studied in the Construction Noise Impact Assessment
Table 5‑4 RAPs
Selected for Construction Noise Impact Assessment
Table 5‑5 Unmitigated
Noise Levels Predicted At CN 1
Table 5‑6 Unmitigated
Noise Levels Predicted At CN 2
Table 5‑7 Unmitigated
Noise Levels Predicted At CN 3
Table 5‑8 Unmitigated
Noise Levels Predicted At CN 4
Table 5‑9 Unmitigated
Noise Levels Predicted At CN 5
Table 5‑10 Mitigated
Noise Levels at CN1 with Silenced PME_
Table 5‑11 Mitigated
Noise Levels at CN2 with Silenced PME_
Table 5‑12 Mitigated
Noise Levels at CN3 with Silenced PME_
Table 5‑13 Mitigated
Noise Levels at CN4 with Silenced PME_
Table 5‑14 Mitigated
Noise Levels at CN5 with Silenced PME_
Table 5‑17 Area
Sensitivity Ratings of NSRs
Table 6‑1 Summary
Statistics of Marine Water Quality of Deep Bay WCZ in 2005 (Inner Deep Bay)
Table 6‑2 Summary
Statistics of Marine Bottom Sediment Quality of Deep Bay WCZ, 2001 -2005
Table 6‑4 Results
Of Water Quality Monitoring In Fishponds At Fung Lok Wai (1995)
Table 6‑5 Results
of Fishpond/ River Water Quality Survey at Fung Lok Wai
Table 6‑6 Results
of Fishpond Sediment Quality Survey at Fung Lok Wai
Table 6‑7 Estimated
Runoff After Development
Table 6‑8 Estimated
Peak Rate of Runoff After Development
Table 6‑9 Water
Quality Objectives for Deep Bay WCZ
Table 6‑10 Classification
of Sediment
Table 6‑11 Sediment
Quality Criteria for the Classification of Sediment
Table 6‑12 Summary
of Annual Evaporation and Rainfall (1989 to 1998)
Table 7‑2 Calculation
of Methane Flux from the Fung Lok Wai Development
Table 8‑1 Development
Schedule the Project
Table 8‑2 Required
Upgrading of the Sewerage Network Leading to the TWR pumping Station
Table 10‑1 The
impacts associated with cultural heritage resources outside the Study Area
Table 10‑2 Mitigation
Recommendations for Cultural Heritage Resources Outside the Study Area
Table 11‑2 Residual
Impact Significance Threshold Matrix
Table 11‑3 Alternative
Schemes Comparison
Table 11‑4 Review
of Existing Planning and Development Control Framework
Table 11‑5 Existing
Landscape Resources and Predicted Impacts – Options 1A and 1B
Table 11‑6 Existing
Landscape Character and Predicted
Impacts – Options 1A and 1B
Table 11‑7A Visually
Sensitive Receivers and Predicted
Impacts – Option 1A
Table 11‑7B Visually
Sensitive Receivers and Predicted
Impacts – Option 1B
Table 11‑8 Proposed Construction Phase Mitigation
Measures
Table 11‑9 Proposed Operational Phase Mitigation
Measures
Table 11‑10 Provisional
Programme for Landscape Works
Table 11‑11 Landscape
and Visual Mitigation Measures Implementation Schedules
Table 12‑1 Results
of Fishpond/ River Water Quality Survey at Fung Lok Wai
Table 12‑3 Optimum
Water Quality Objectives for
Initiating Fish Rearing
Table 12‑5 Production
Time And Acceptable Market Size Of Species Of Fish Raised In Aquaculture Ponds
Table 12‑6 Extent
of Habitats Identified Within the Fung Lok Wai Assessment Area
Table 12‑8 Schedule
for pond enhancement works. Bund numbers are illustrated in Figure 12‑2
Table 13‑1 Results of Water Quality Monitoring in
Fishponds at Fung Lok Wai (May 2002)
Table 13‑2 Survey
Time Segments for Bird Flight Line Surveys
Table 13‑3 Target
Species for Flightline Surveys and Their Species Codes used on Recording Sheets
Table 13‑4 Altitude Categories Adopted to Record the
Bird Flight Line Data
Table 13‑5 Extent
of Habitat Types within the Assessment Area (ha.)
Table 13‑6 Ecological
Evaluation Of Intertidal Forested Wetlands
Table 13‑7 Ecological
Evaluation of Permanent Rivers, Streams and Creeks
Table 13‑8 Ecological
Evaluation of Ditches and Drainage Channels
Table 13‑9 Ecological
Evaluation of Aquaculture Ponds
Table 13‑10 Ecological
Evaluation of Reedbed
Table 13‑11 Ecological
Evaluation of Permanent Freshwater Marsh and Pools
Table 13‑12 Ecological
Evaluation of Seasonally Flooded (wet) Agricultural Land
Table 13‑13 Ecological
Evaluation of Dry Agricultural Land
Table 13‑14 Ecological
Evaluation of Inactive Agricultural Land
Table 13‑15 Ecological
Evaluation of Orchards
Table 13‑16 Ecological
Evaluation of Fung Shui Woodland
Table 13‑17 Ecological
Evaluation of Semi-natural Secondary Woodland
Table 13‑18 Ecological
Evaluation of Plantation Woodland
Table 13‑19 Ecological
Evaluation of Grassland
Table 13‑20 Ecological
Evaluation of Grassland-Shrubland Mosaic
Table 13‑21 Ecological
Evaluation of Landscaped Area
Table 13‑22 Ecological
Evaluation of Wasteland Habitats
Table 13‑23 Ecological
Evaluation of Recreated Wetland
Table 13‑24 Ecological
Evaluation of Developed Areas
Table 13‑25 Summary
of habitat evaluations in order of ecological value.
Table 13‑26 Plant
Species of Potential Conservation
Interest Recorded within the
Assessment Area
Table 13‑31 Dominant Species by Altitude Category
Table 13‑34 Dominant
Species Recorded at Each Altitude Category within the Proposed Development Area
Table 13‑36 Summary
Matrix of Potential Impacts on Various
Types of Habitats
Table 13‑37 Summary
of Impacts to Aquaculture Ponds from Habitat Loss
Table 13‑38 Summary
of Impacts to Ditches and Drainage Channel from Habitat Loss
Table 13‑40 Summary
of Impacts to Fung-shui Woodland from Habitat Fragmentation
Table 13‑41 Summary
of Impacts to Aquaculture Ponds from Disturbance
Table 13‑42 Summary
of Impacts to Fung Shui Woodland (Including Egretry) from Disturbance
Table 13‑43 Summary
of Impacts to Intertidal Forested Wetland from Disturbance
Table 13‑45 Summary
of Impacts to Dry/Inactive Agricultural Land from Disturbance
Table 13‑46 Summary
of impacts to Semi-natural Secondary Woodland from Disturbance
Table 13‑47 Summary
of Impacts to Aquaculture Ponds from Pollution
Table 13‑48 Summary
of Impacts to Fung-shui Woodland (including Egretry) from Pollution
Table 13‑49 Summary
of Impacts to Intertidal Forested Wetland from Pollution
Table 13‑51 Summary
of Impacts to Dry/Inactive Agricultural Land from Pollution
Table 13‑52 Summary
of Impacts to Semi-natural Secondary Woodland from Pollution
Table 13‑53 Summary
of Impacts to Aquaculture Ponds from Soil Compaction
Table 13‑54 Summary
of Impacts to Ditches and Drainage Channels from Hydrological Disruption
Table 13‑58 Significance
of impacts on Species of Conservation Importance at Fung Lok Wai
Table 13‑64 Mitigation
Targets for Enhanced Aquaculture Ponds
Table 13‑65 Mitigation
Targets for Marsh Habitat
Table 13‑66 Bird
SpeciesExpected to Use the Marsh Habitat
Table 13‑68 Proposed Mitigation Measures and Predicted
Residual Impacts
Table 13‑69 Mitigation targets for Key Bird Species and
other Species of Conservation Importance
Table 14‑1 Ecological
evaluation of habitats within the Fung Lok Wai Assessment Area
Table 14‑2 Species
of Conservation Importance that occur within the Fung Lok Wai Assessment Area
Table 14‑3 Summary
matrix of potential impacts on habitats
Table 14‑5 Mitigation targets for enhanced fishponds
Table 14‑6 Mitigation targets for Marsh Habitat
Table 14‑8 Species Expected to Use the Marsh Habitat
Table 14‑9 The area of habitats in the proposed WNR
Table 14‑10 Pond enhancement schedule.
Table 14‑11 Wetland species to be established in the
aquaculture pond mitigation area
Table 14‑12 Species to be established in the Marsh
Habitat area
Table 14‑13 Long-term
pond management (5 year cycle)
Table 14‑14 General
management actions for the Fung Lok Wai WNR
Table 14‑15 Ecological monitoring programme for Fung Lok
Wai WNR
Table 14‑16 Key
Action Levels and Limits and their associated management actions
·
About
·
About
· No net loss of wetland;
· Sustainability;
· Wise use of the wetland.
No net loss of wetland
Sustainability
Wise use of wetland
· Overall acceptability of any adverse environmental consequences that are likely to arise as a result of the proposed project;
· Conditions and requirements for the detailed design, construction and operation of the proposed project to mitigate against adverse environmental consequences wherever practicable; and
· Acceptability of residual impacts after the proposed mitigation measures are implemented.
· To describe the proposed project and associated works together with the requirements for carrying out the proposed project;
· To identify and describe the elements of the community and environment likely to be affected by the proposed project and/or likely to cause adverse impacts to the proposed project, including both the natural and man-made environment;
· To identify and quantify all environmental sensitive receivers, emission sources and determine the significance of impacts on sensitive receivers and potential affected uses;
· To identify and quantify any potential losses or damage to flora, fauna and wildlife habitats;
· To identify any negative impacts on sites of cultural heritage and to propose measures to mitigate these impacts;
· To identify and quantify any potential landscape and visual impacts and to proposed measures to mitigate these impacts;
· To propose the provision of infrastructure or mitigation measures so as to minimize pollution, environmental disturbance and nuisance during construction and operation of the project;
· To identify, predict and evaluate the residual (i.e. after practicable mitigation) environmental impacts and the cumulative effects expected to arise during the construction and operation phases of the project in relation to the sensitive receivers and potential affected uses;
· To identify, assess and specify methods, measures and standards, to be included in the detailed design, construction and operation of the project which are necessary to mitigate these environmental impacts and reducing them to acceptable levels;
· To investigate the extent of side-effects of proposed mitigation measures that may lead to other forms of impacts;
· To identify constraints associated with the mitigation measures recommended in the EIA study;
· To identify, within the study area, any individual project(s) that fall under Schedule 2 and/or Schedule 3 of the EIA Ordinance; to ascertain whether the findings of this EIA study have adequately addressed the environmental impacts of those projects; and where necessary, to identify the outstanding issues that need to be addressed in any further detailed EIA study; and
· To design and specify the environmental monitoring and audit requirements, if required, to ensure the implementation and the effectiveness of the environmental protection and pollution and pollution control measures adopted.
· Noise impacts arising from construction and operation of the development to the nearby village areas;
· Dust impacts arising from construction of the development to the nearby villages;
· Landscape and visual impacts during construction and operation of the development;
· Water quality impacts during construction and operation, including pond draining and filling, sewage collection, treatment and disposal systems, surface runoff and land drainage and stormwater system;
· Potential impacts on historical buildings/architectures and monuments;
·
Wetland loss and impacts to the
adjacent fishponds, Hong Kong Wetland Park, Recognized Sites of Conservation
Importance including Wetland Conservation Area, Wetland Buffer Area and
·
Terrestrial and aquatic
ecological impacts to the adjacent area with conservation importance and
ecologically sensitive areas including the Hong Kong Wetland Park,
· Fisheries impacts during construction and operation of the development;
· Collection and disposal of potentially contaminated dredged spoil arising from the project; and
· Proposals for the short term and long term management of the proposed Wetland Nature Reserve with the project area including trust and financial arrangement.
Volume 1
Section 1 Introduction
Section 2 Project Description
Section 3 Consideration of Alternative Schemes
Section 4 Air Quality Impact Assessment
Section 5 Noise Impact Assessment
Section 6 Water Quality Impact Assessment
Section 7 Potential Problem of Biogas
Section 8 Sewerage and Sewage Treatment Implications
Section 9 Waste Management
Section 10 Cultural Heritage Impact Assessment
Section 11 Landscape and Visual Impact Assessment
Volume 2
Section 12 Fisheries Impact Assessment
Section 13 Ecological Impact Assessment
Section 14 The Habitat Creation and Management Plan of the Wetland Nature Reserve
Section 15 The Long-term Management of the Wetland Nature Reserve
Section 16 Environmental Monitoring and Audit Requirements
Section 17 Summary of Environmental Outcome and Overall Conclusion
The Residential Development
Table 2‑1 Basic
Parameters of the Proposed Residential Development
|
Total Site Area (approximate) |
|
|
Area of
residential development (approximate) |
|
|
Area of
wetland nature reserve (approximate) |
|
|
Proposed Plot Ratio |
0.185 |
|
Proposed Residential GFA |
|
|
Design Population |
8,490 |
|
No. of Flats |
Not more
than. 2,860 units |
The Access Road
The Wetland Nature Reserve
Outline Design of Wetland Nature Reserve
· A large expanse of retained, but ecologically enhanced, fishponds; and,
· An area of re-created ‘natural’ marshland.
· Increase the value of fishponds to herons and egrets outside harvesting periods (i.e. draw-down), by increasing food resources and food availability and by reducing disturbance effects. Enhancement of the value of fishponds to such birds outside harvest periods could reduce the potential for ‘feeding bottlenecks’ thereby possibly reducing the area of fishponds needed to support the population.
· Increase their overall biodiversity value and suitability for other non-bird Species of Conservation Importance, such as some mammals (e.g. Eurasian Otter), amphibians and reptiles, whilst maintaining their current important functions for herons, egrets and other water birds.
· The size of the fishponds will be increased by re-profiling unwanted bunds.
· Emergent vegetation will be allowed to develop.
· Areas of shallow water and intermittently exposed muddy islands will be created.
·
The majority of the fishponds
on site are maintained, including all those within the
·
The location of the proposed area for the re-creation of
natural wetlands will maximise the potential for ecological links with the
following complementary adjacent habitats:
o
Scrub and woodland habitats on the hillsides to the south
of the site;
o
Inter-tidal mangrove habitats along the former
o
The wetland creation at Hong Kong Wetland Park (HKWP).
o
These habitats may provide sources for the natural spread
and establishment of some plants and animals within the wetland area. In
addition they will provide additional shelter, food or breeding sites for
wetland species and ecological ‘corridors’, which may facilitate dispersal.
·
As the re-created wetland will contain abundant tall reed
beds, as well as other tall wetland vegetation and scattered trees, this will
serve as a buffer between the residential development and the fishponds. This
will reduce disturbance of birds feeding within the fishponds.
Preliminary Construction Program
· First phase (3rd quarter of 2010 to 2nd quarter of 2013) - establishment of the WNR. Key construction activities to be carried out include:
o Relocating water from Sector 1, Sector 2 and Sector 3 ponds at different phases;
o Draining, removing bunds and installing water controls at Sector 1, Sector 2 and Sector 3 of the WNR at different phases;
o Re-filling ponds at Sector 1, Sector 2 and Sector 3 of the WNR;
o Selective felling and vegetation management at Sector 1, Sector 2 and Sector 3 of the WNR at different phases;
o Land formation and water control structures construction of the Marshland area;
o Habitat creation of the Marshland area;
o Constructing facilities of the Marshland area, such as board walks, hides, toilets and shelters.
· Second phase (2nd quarter of 2011 to 3rd quarter of 2016) - construction works for development area. Key construction activities to be carried out are listed below:
o Site clearance for the construction works for development area;
o Pond draining and dredging at built area;
o Delivery of fill material by trucks to the site;
o Spreading and compaction of fill material at built area;
o Foundation and superstructure works for buildings;
o Construction of sewage pump house;
o Laying of drainage, sewerage and utilities;
o Paving of internal access road.
· Third phase (4th quarter of 2014 to 3rd quarter of 2016) – widening works of the access road leading to the Project site. Key construction activities include:
o Site clearance and formation for the widening of the Access Road leading to the site;
o Laying of drainage, sewerage and utilities;
o Formation of road sub-base, levelling and compaction;
o Road paving and installation of road furniture;
o Construction of landscape works;
o Soft landscape establishment works
Establishment and Management of Wetland Nature Reserve
· Creation of shallows and muddy islands through re-distribution of bund material; and,
· Cut back of vegetation.
· Permanent marsh composed of a series of shallow inter-locking lakes with occasional deep areas and islands.
· Seasonal marsh composed of vegetation that is inundated only during the wet season.
· Storage pond. The water deficit usually experienced every dry season is a constraint on the design and management of marsh habitats. To ensure a supply of freshwater of suitable quality for the permanent marsh throughout the year an existing fishpond will be enlarged to provide storage. The optimum size of this storage has been established through modelling of typical and extreme rainfall patterns.
Work Programme
Interim Management
· The fish populations within ponds will vary greatly depending on previous management. A rapid assessment of remaining populations will be carried out and ponds re-stocked, as required, with trash fish species;
· Initial and ongoing correction of water quality, specifically pH to ensure appropriate conditions for fish survival. Although trash fish species are relatively hardy compared to many commercial fish, they can be affected by low pH conditions. If pH drops below 4.5 then peanut residue will be added to raise pH; and,
·
Rotational, partial drain down
of pairs ponds. Once drained down each pair of ponds will be maintained with
shallow water <
Long-term Management
Table 2‑2 Habitat Enhancement Work Programme For The Fung Lok Wai WNR
|
Construction Phase |
Period |
Construction activities |
|
Pre-construction Phase I |
Jul 2010 |
Site handover All ponds under existing management |
|
Pre-construction Phase II |
Oct 2010 – Mar 2011 |
Enhance Sector 1 ponds All other ponds remain under existing management regime |
|
Pre-construction Phase III |
Apr – Sep 2011 |
Commence site clearance of Residential Development area and Marsh
area Enhance Sector 2 ponds Interim management of Sector 1 ponds. Sector 3 and marsh area ponds remain under existing management regime |
|
Pre-construction Phase IV |
Oct 2011 – Mar 2012 |
Continue site clearance and forming of Residential Development area Commence Marsh Creation works Interim management of Sector 1, 2 and 3 ponds |
|
Pre-construction Phase V |
Apr – Sep 2012 |
Continue site clearance and forming of Residential Development area Complete Marsh Creation works and commence establishment Enhance Sector 3 ponds Interim management of Sector 1 and 2 |
|
Pre-construction Phase VI |
Oct 2012 – Jun 2013 |
Continue site clearance and forming of Residential Development area Establishment of Marsh habitats Interim management of Sector 1, 2 and 3 ponds |
|
Construction Phase |
Jul 2013 – Sep 2016 |
Residential Development construction Management of Marsh habitat Interim management of Sector 1, 2 and 3 ponds |
|
Operation Phase |
Oct 2016 onwards |
Occupation of Residential Development Long-term management of the WNR |
Improvement works of Access Road Leading to the Subject Site
Construction Works for the Residential Development