Central Reclamation, Phase
III
Studies,
Site Investigation, Design and Construction
Environmental
Impact Assessment Report
Volume 1- Text
(July 2001)
cONTENTS
1.2 History of Project including Previous
Alternative Options Considered
1.5 Key Elements of the Project
1.8 Built Heritage Impact Assessment
3.1 EIA Ordinance Technical Memorandum
4. Construction Sequence and interfaces
4.1 Construction Sequence – Issues and
Constraints
4.2 Proposed Construction Sequence
5.3 Prediction and Environmental Impacts
5.4 Mitigation of Adverse Environmental Impacts
6.2 Operational Noise Receivers
7.2 Construction Noise Receivers
7.5 Prediction and Evaluation of Environmental
Impacts withoug Mitigation
7.6 Mitigation of Adverse Environmental Impacts
and Evaluation of Residual Impacts
8.3 Representative Sensitive Receivers for
Operational Air Quality Impact
8.5 Prediction and Evaluation of Environmental
Impacts on CRIII ASRs
9.2 Construction Dust Generating Activities
9.3 Construction Dust Impact Assessment
Methodology
9.4 Prediction and Evaluation of Environmental
Impacts
9.5 Mitigation of Adverse Environmental Impacts
9.6 Potential Odour Impacts from Embayment
10.4 Baseline Water Quality Modelling
10.6 Construction Phase Impact Assessment
10.7 Operation Phase Impact Assessment
13. WASTE DISPOSAL AND BIOGAS ASSESSMENT
13.4 Potential Sources of Impact
13.6 Construction and Demolition Waste
13.12 Storage,
Collection and Transport of Waste
14. Landscape and Visual Assessment
14.2 Baseline Study – Description of the Environment within the CRIII Works
Area
14.3 Planning and Development Control Framework
14.4 Landscape Impact Assessment
14.6 Environmental Monitoring and Audit
14.7 Implementation and Funding
14.8 Conclusions and Recommendations
16.1 Potential Environmental Impacts and Key Issues
Appendices
Appendices are included in a separate volume -
Volume 2
Appendix A Project History
Appendix B Review of Reclamation Methodology for
CRIII Minimum Option
Appendix C Detailed Construction Programme
Appendix D Sample Output File for Road Traffic
Noise Assessment / Confirmation Letter from Transport Department on CRIII Road
Speeds
Appendix E Powered Mechanical Equipment (PME) for
Different Construction Tasks during Normal Daytime Working Hours
Appendix F Detailed Calculations and Results of
Cumulative Construction Noise Impacts during Normal Working Hours
Appendix G Powered Mechanical Equipment (PME) for
Different Construction Tasks during Restricted Working Hours
Appendix H Detailed Calculations and Results of
Cumulative Construction Noise Impacts during Restricted Working Hours
Appendix I Sample CALINE Air Quality Model Output
Appendix J Sample ISCST3 Air Quality Model Output
Appendix K Calculation of Dust Emission Factors
Appendix L Sample Computer Output from FDM used in
Construction Air Quality Assessments
Appendix M Dust Levels from Different Construction
Scenarios (Unmitigated)
Appendix N Dust Levels from Different Construction
Scenarios (Mitigated)
Appendix O Hydraulic and Water Quality Modelling
Results
Appendix P Information Abstracted from Previous
Sediment Quality Report for the Project Site as applicable to the CRIII Minimum
Option Layout
Appendix Q Cumulative Water Quality Assessments for
CRIII and WDII projects undertaken as part of the WDII EIA Study
Appendix R SedPlume Modelling Scenarios and results
from Previous Studies for the Project Site
Appendix S EMSD Cooling Water Systems Data
Appendix T Baseline Study - Description of the
Environment
Appendix U Planning and Development Control
Framework
Appendix V Landscape & Visual Impact Assessment
for Redesign of the Airport Railway Extended Overrun Tunnel
Appendix W Built Heritage Impact Assessment
TABLES
Table 2.1 : Existing Air Sensitive Receivers (ASRs)
Table 2.2 :
Additional Future Air Sensitive Receivers (ASRs)
Table 3.1 :
Summary of Noise Standards
Table 3.2 :
Basic Noise Levels in dB(A) (BNLs)
Table 3.3 :
Area Sensitivity Ratings
Table 3.4 :
Basic Noise Levels in dB(A) (BNLs) for Designated Areas
Table 3.5 :
Environmental Standards for Fixed Noise Sources dB(A)
Table 3.6 :
Air Quality Objectives
Table 3.9 :
Water Quality Objectives (WQOs) (All Phases) for Victoria Harbour
Table 3.10 : Water Quality Objectives for Flushing
Purposes
Table 3.12 :
Sediment Quality Criteria for the Classification of Sediment According to WBTC 3/2000
Table 4.1 : Summary of Construction Tasks and Stages
for CRIII
Table 4.2 :
Summary of Construction Programme
Table 4.3 :
Timings of Interfacing Projects
Table 5.1 :
Predicted Cumulative Traffic Noise Levels for Year 2027
Table 7.1:
Summary of Unmitigated Construction Noise Levels Duirng Normal Working Hours
Table 7.2:
Summary of Unmitigated Construction Noise Levels Duirng Restricted Hours
Table 7.3 :
Summary of Mitigated Construction Noise Levels During Normal Working Hours
Table 7.4 : Summary of Mitigated Construction Noise
Levels During Restricted Hours
Table 8.1 :
Measured Annual Average Pollutant Levels µg/m3 at Central/Western Station (1999)
Table 8.2 : Emission Factors for Year 2011 for
Different Vehicle Categories (EURO3)
Table 8.3 : Portal and Ventilation Building Emissions
Table 8.4 : Design of Ventilation Buildings
Table 9.1 : Emission Factors for Construction
Activities
Table 9.5 : Predicted Cumulative 1-hour Average TSP
Concentration for Scenarios 1 to 8 (Mitigated)
Table 9.6 : Predicted Cumulative 24-hour Average TSP
Concentration for Scenarios 1 to 8 (Mitigated)
Table 10.1 : Water Sensitive Receivers (Sea Water Cooling
Systems Intakes and Discharges)
Table 10.2 : Summary Statistics of 1998 Water Quality –
Victoria Harbour Central
Table 10.3 : Summary Statistics of 1997 Water Quality –
Victoria Harbour Central
Table 10.4 : Summary Statistics of 1996 Water Quality –
Victoria Harbour Central
Table 10.5 : Summary Statistics of 1995 Water Quality –
Victoria Harbour Central
Table 10.6 : Target Accuracies Used for the Calibration
of the Hydrodynamic Model
Table 10.7 : Values of the water quality parameters in
the calibration
Table 10.8 : Timing of analysis tides within tidal
sequences
Table 10.11
: Water quality variable loads for the
stormwater outfalls near Central
Table 10.13
: Physical parameter values used for
the suspended sediment plume simulations
Table 10.14
: Dredging and Filling Schedules
Table 10.15
: Sediment release for the two
scenarios
Table 10.29 : Comparison of discharge rates at Sections
to the East & West of the CRIII
Area
Table 11.1 :
Organisms Potentially Present within the Study Area
Table 14.1 :
Landscape Impact Characteristic (Positive or Negative)
Table 14.2 : Visual Impact Characteristic (Positive or
Negative)
Table 14.3 :
Residual Landscape Impacts from Reclamation
Table 14.4 : Residual Landscape Impacts from Primary and
Distributor Roads
Table 14.5 : Residual Landscape Impacts from Central-Wan
Chai Bypass Tunnel
Table 14.6 : Residual Landscape Impacts from North Island
Line Protection Works within CRIII
Table 14.7 : Residual Landscape Impacts from CRIII
(Schedule 3 Project)
Table 14.8 :
Residual Visual Impacts from Designated Project 1 - Reclamation
Table 14.10
: Residual Visual Impacts from
Designated Project 3 – Central-Wan Chai Bypass Tunnel
Table 14.12 :
Residual Visual Impacts from CRIII (Schedule 3 Project)
Table 15.1 : AL Levels for Total Suspended Particulate
(TSP)
Table 15.2 : AL Levels for Noise Measured at NSR during
Construction
Table 16.1 : Schedule of Impacts and Mitigation Measures
FIGURES
Figure 1.1 Extent of Full and Streamlined Reclamations 1.1.gif
Figure 1.2 Study Area and Proposed Layout 1.2.gif
Figure 2.1 Air / Noise Sensitive Receivers and Noise Prediction Points 2.1.gif
Figure 2.2 Water Quality Sensitive Receivers along the CRIII Waterfront 2.2.gif
Figure 2.3 Water Quality Sensitive Receivers outside CRIII site but considered in study 2.3.gif
Figure 2.4 Extent of Usage of Different Reclamatin Fill Materials 2.4.gif
Figure 4.1 Envisaged Construction Sequence – Stages 1 to 4 4.1.gif
Figure 4.2 Envisaged Construction Sequence – Stages 5 to 8 4.2.gif
Figure 5.1a 2027 AM Peak Hour Forecast Traffic Flow 5.1a.gif
Figure 5.1b 2027 AM Peak Hour Forecast Traffic Flow 5.1b.gif
Figure 5.1c 2027 AM Peak Hour Forecast Traffic Flow 5.1c.gif
Figure 5.1d 2027 AM Peak Hour Forecast Traffic Flow 5.1d.gif
Figure 5.2 Predicted Noise Levels at Sensitive Receivers 5.2.gif
Figure 6.1 Location of Fixed Noise Sources 6.1.gif
Figure 8.1 Location of Portals and Ventilation Buildings 8.1.gif
Figure 8.2a Contours of Predicated Cumulative Maximum 1-Hour Average NO2 Concentrations in mg/m3 at 1.5m Above Ground Level 8.2a.gif
Figure 8.2b Contours of Predicated Cumulative Maximum 1-Hour Average NO2 Concentrations in mg/m3 at 10m Above Ground Level 8.2b.gif
Figure 8.2c Contours of Predicated Cumulative Maximum 1-Hour Average NO2 Concentrations in mg/m3 at 20m Above Ground Level 8.2c.gif
Figure 8.2d Contours of Predicated Cumulative Maximum 1-Hour Average NO2 Concentrations in mg/m3 at 30m Above Ground Level 8.2d.gif
Figure 8.2e Contours of Predicated Cumulative Maximum 1-Hour Average NO2 Concentrations in mg/m3 at 70m Above Ground Level 8.2e.gif
Figure 8.2f Contours of Predicated Cumulative Maximum 1-Hour Average NO2 Concentrations in mg/m3 at 110m Above Ground Level 8.2f.gif
Figure 8.3 Contours of Predicated Cumulative Maximum 24-Hour Average NO2 Concentrations in mg/m3 at 1.5m Above Ground Level 8.3.gif
Figure 8.4 Contours of Predicated Cumulative Maximum 24-Hour Average RSP Concentrations in mg/m3 at 1.5m Above Ground Level 8.4.gif
Figure 8.5 Contours of Predicated Cumulative Maximum 1-Hour Average CO Concentrations in mg/m3 at 1.5m Above Ground Level 8.5.gif
Figure 9.1 Summary of Major Dust Generating Activities 9.1.gif
Figure 9.2 Contours of Cumulative Maximum 1-Hour Average TSP Concentrations in mg/m3 at 1.5m Above Ground Level (Mitigated) 9.2.gif
Figure 9.3 Contours of Cumulative Maximum 24-Hour Average TSP Concentrations in mg/m3 at 1.5m Above Ground Level (Mitigated) 9.3.gif
Figure 10.1a Suspended Sediment Plume Scenario 1 sources in the Central area 10.1a.gif
Figure 10.1b Suspended Sediment Plume Scenario 2 sources in the Central area 10.1b.gif
Figure 10.2 Suspended Sediment Plume Scenarios 1 and 2 sources for concurrent project 10.2.gif
Figure 10.3 Suspended Sediment Plume Scenario 1 sensitive receivers in the Central area 10.3.gif
Figure 10.4 Suspended Sediment Plume Scenario 2 sensitive receivers in the Central area 10.4.gif
Figure 10.5 Scenario 1 suspended mud concentrations at peak flood, dry season neap tide 10.5.gif
Figure 10.6 Scenario 1 suspended mud concentrations at peak ebb, dry season neap tide 10.6.gif
Figure 10.7 Scenario 1 suspended mud concentrations at the sensitive receivers, dry season neap tide 10.7.gif
Figure 10.8 Scenario 1 suspended mud concentrations at the sensitive receivers, dry season neap tide 10.8.gif
Figure 10.9 Scenario 1 suspended mud concentrations at the sensitive receivers, dry season neap tide 10.9.gif
Figure 10.10 Scenario 1 suspended mud concentrations at the sensitive receivers, dry season neap tide 10.10.gif
Figure 10.11 Scenario 1 suspended mud concentrations at the sensitive receivers, dry season neap tide 10.11.gif
Figure 10.12 Scenario 1 tide-and depth – averaged suspended mud concentrations, dry season neap tide 10.12.gif
Figure 10.13 Scenario 1 net deposition over one day, dry season neap tide 10.13.gif
Figure 10.14 Scenario 2 suspended mud concentrations at peak flood, wet season neap tide 10.14.gif
Figure 10.15 Scenario 2 suspended mud concentrations at peak ebb, wet season neap tide 10.15.gif
Figure 10.16 Scenario 2 suspended mud concentrations at the sensitive receivers, wet season neap tide 10.16.gif
Figure 10.17 Scenario 2 suspended mud concentrations at the sensitive receivers, wet season neap tide 10.17.gif
Figure 10.18 Scenario 2 suspended mud concentrations at the sensitive receivers, wet season neap tide 10.18.gif
Figure 10.19 Scenario 2 suspended mud concentrations at the sensitive receivers, wet season neap tide 10.19.gif
Figure 10.20 Scenario 2 suspended mud concentrations at the sensitive receivers, wet season neap tide 10.20.gif
Figure 10.21 Scenario 2 tide-and depth – averaged suspended mud concentrations, wet season neap tide 10.21.gif
Figure 10.22 Scenario 2 net deposition over one day, wet season neap tide 10.22.gif
Figure 10.23 Sensitive Receivers and Stormwater Outfalls – Initial Reclamation Layout 10.23.gif
Figure 10.24 Locations of Sections for Discharge Comparisons 10.24.gif
Figure 10.25 Sensitive Receivers and Stormwater Outfalls – Final Layout 10.25.gif
Figure 10.26 Locations of Cooling Water Pumping Station Outfalls at the Completion of CRIII Works 10.26.gif
Figure 14.1 Baseline Landscape and Visual Character Areas 14.1.gif
Figure 14.2 Baseline Visual Envelope and Photo View Point Locations 14.2.gif
Figure 14.3 Landscape and Visual Characteristics – Photograph Views A and B 14.3.gif
Figure 14.4 Landscape and Visual Characteristics – Photograph View C 14.4.gif
Figure 14.5 Landscape and Visual Characteristics – Photograph Views D and E 14.5.gif
Figure 14.6 Landscape and Visual Characteristics – Photograph View F 14.6.gif
Figure 14.7 Aerial View of the Study Area from the West (1997) Photograph View G 14.7.gif
Figure 14.8 Aerial View of the Study Area from the East (1997) Photograph View H 14.8.gif
Figure 14.9 Designated Project 1 - Reclamation Layout Plan and Section 14.9.gif
Figure 14.10 Designated Project 2 - Primary and District Distributor Roads Layout Plan and Section 14.10.gif
Figure 14.10a Designated Project 2 - Primary and District Distributor Roads Landscape & Visual Mitigation Measures 14.10a.gif
FIGURES (CONT’D)
Figure 14.11 Designated Project 3 - Central Wan Chai Bypass Tunnel Layout Plan and Section 14.11.gif
Figure 14.12 Designated Project 4 - North Island Line Protection Works Layout Plan and Section 14.12.gif
Figure 14.13 Landscape Concept Plan 14.13.gif
Figure 14.14 Conceptual Landscape Master Plan 14.14.gif
Figure 14.15 Waterfront Promenade Typical Section 14.15.gif
Figure 14.16 Statue Square Open Space Corridor Typical Section 14.16.gif
Figure 14.17 Typical Streetscape Sections 14.17.gif
Figure 14.18 Section Through Reclamation Indicating Overall Location of Designated Projects and Implementation Programme 14.18.gif
Figure 14.19 Primary Visual Receivers and Proposed Development Heights 14.19.gif
Figure 14.20 View from Star Ferry, Kowloon Visual Impact of CRIII upon Existing and Committed Development and Ridge Line 14.20.gif
Figure 14.21 Photomontage View Point Locations (Refer to Figure 14.22 – 14.27) 14.21.gif
Figure 14.22a Photomontage No. 1 – CRIII Viewed form the Peak Tower Existing View 14.22a.gif
Figure 14.22b Photomontage No. 1 – CRIII Viewed from the Peak Tower View at Year 10 14.22b.gif
Figure 14.23a Photomontage No. 2 – CRIII Viewed from North of “Star” Ferry Pier (Aerial View) Existing View 14.23a.gif
Figure 14.23b Photomontage No. 2 – CRIII Viewed from North of “Star” Ferry Pier (Aerial View) View at Day One without Mitigation 14.23b.gif
Figure 14.23c Photomontage No. 2 – CRIII Viewed from North of “Star” Ferry Pier (Aerial View) View at Year 10 14.23c.gif
Figure 14.24a Photomontage No. 3 – CRIII Viewed from the 24th Floor of the Admiralty Centre Existing View 14.24a.gif
Figure 14.24b Photomontage No. 3 – CRIII Viewed from the 24th Floor of the Admiralty Centre View at Day 1 without Mitigation 14.24b.gif
Figure 14.24c Photomontage No. 3 – CRIII Viewed from the 24th Floor of the Admiralty Centre View at Year 10 14.24c.gif
Figure 14.25a Photomontage No. 4 – CRIII Viewed from Expo Drive Existing View 14.25a.gif
Figure 14.25b Photomontage No. 4 - CRIII Viewed from Expo Drive View at Day One without Mitigation 14.25b.gif
Figure 14.25c Photomontage No. 4 – CRIII Viewed from Expo Drive View at Year 10 14.25c.gif
Figure 14.26a Photomontage No. 5 – CRIII Viewed from North East of HKCEC (Aerial View) Existing View 14.26a.gif
Figure 14.26b Photomontage No. 5 – CRIII Viewed from North East of HKCEC (Aerial View) View at Day One without Mitigation 14.26b.gif
Figure 14.26c Photomontage No. 5 – CRIII Viewed from North East of HKCEC (Aerial View) View at Year 10 14.26c.gif
Figure 14.27a Photomontage No. 6 – CRIII Viewed from “Star” Ferry Pier, TST Existing View 14.27a.gif
Figure 14.27b Photomontage No. 6 – CRIII Viewed from “Star” Ferry Pier, TST View at Year 10 14.27b.gif
Abbreviations
& Acronyms |
|
ANL |
Acceptable
Noise Levels |
APCO |
Air Pollution Control Ordinance |
AQOs |
Air Quality Objectives |
ASRs |
Air Sensitive Receivers |
ATRT |
Advance Trunk Road Tunnel |
BOD |
Biological Oxygen Demand |
CRI |
Central Reclamation Phase I |
CRIII |
Central Reclamation Phase III |
CRIII-FR |
Central Reclamation Phase III, Full Reclamation |
CRIII-SO |
Central Reclamation Phase III, Streamlined Reclamation |
CRIII-MO |
Central Reclamation Phase III, Minimum Option |
CRTN |
Calculation of Road Traffic Noise |
CWB |
Central-Wan Chai Bypass |
CWTC |
Chemical Waste Treatment Centre |
DO |
Dissolved Oxygen |
DP |
Designated Project |
DSD |
Drainage Services Department |
EIA |
Environmental Impact Assessment |
EIAO |
Environmental Impact Assessment Ordinance |
EIAOTM |
Technical Memorandum on Environmental Impact Assessment Process |
EM&A |
Environmental Monitoring and Audit |
EM&A |
Environmental Monitoring and Audit |
EOT |
Hong Kong Station Extended Overrun Tunnel |
EP |
Environmental Permit |
EPD |
Environmental Protection Department |
FDM |
Fugitive Dust Model |
FEIASO |
Final EIA Report for the Streamlined Option |
FMC |
Fill Management Committee |
GID |
Green Island Development |
GPO |
General Post Office |
HAB |
Home Affairs Bureau |
HKAPA |
Hong Kong Academy for Performing Arts |
IEC |
Island East Corridor |
IFC |
International
Finance Centre |
ISCST3 |
Industrial Source Complex Short Term (Version 3) |
LCSD |
Leisure and Cultural Services Department |
MTRC |
Mass Transit Railway Corporation |
NCO |
Noise Control Ordinance |
NH3 |
Ammonia |
NIL |
North Island Line |
NO2 |
Nitrogen Dioxide |
NSR |
Noise Sensitive Receiver |
PGGE |
Principal Government Geotechnical Engineer |
RSP |
Respirable Suspended Particulates |
SO2 |
Sulphur Dioxide |
SS |
Suspended Solids |
SSDS |
Strategic Sewage Disposal Scheme |
SSSI |
Site of Special Scientific Interest |
TDD |
Territory Development Department |
TIA |
Traffic Impact Assessment |
TIN |
Total Inorganic Nitrogen |
TM |
Technical Memorandum |
TSP |
Total Suspended Particulates |
VSR |
Visually Sensitive Receiver |
WBTC |
Works Branch Technical Circular |
WCZs |
Water Control Zones |
WPCO |
Water Pollution Control Ordinance |
REFERENCES
1. Green Island Development – Studies on
Ecological, Water Quality and Marine Traffic Impacts. Agreement No CE 31/96. 3D
TELEMAC (Dry Season Spring Tide) Flow Calibration Report. Babtie BMT (Hong
Kong) Ltd, February 1998.
2. Green Island Development – Studies on
Ecological, Water Quality and Marine Traffic Impacts. Agreement No CE 31/96. 3D
TELEMAC (Dry Season Neap Tide) Flow Calibration Report. Babtie BMT (Hong Kong)
Ltd, February 1998.
3. Green Island Development – Studies on
Ecological, Water Quality and Marine Traffic Impacts. Agreement No CE 31/96. 3D
TELEMAC (Wet Season Spring Tide) Flow Calibration Report. Babtie BMT (Hong
Kong) Ltd, March 1998.
4. Green Island Development – Studies on
Ecological, Water Quality and Marine Traffic Impacts. Agreement No CE 31/96. 3D
TELEMAC (Wet Season Neap Tide) Flow Calibration Report. Babtie BMT (Hong Kong)
Ltd, March 1998.
5. Green Island Development – Studies on
Ecological, Water Quality and Marine Traffic Impacts. Agreement No CE 31/96. 3D
Dry Season Water Quality Calibration Report. Babtie BMT Harris & Sutherland
(Hong Kong) Ltd, May 1998.
6. Green Island Development – Studies on
Ecological, Water Quality and Marine Traffic Impacts. Agreement No CE 31/96. 3D
Wet Season Water Quality Calibration Report. Babtie BMT Harris & Sutherland
(Hong Kong) Ltd, June 1998.
1.
Central Reclamation Phase III, Marine
Site Investigations, Swath Survey. Contract No. HK 5/95.
Final Report. Gammon
Construction Ltd & Electronic and Geophysical Services Ltd, November 1995.
2.
Strategic Sewage Disposal Scheme Environmental
Impact Assessment Study. Agreement No.
CE 52/95. Technical Note 1; Wastewater
Flows and Loads and Effluent Characteristics, Montgomery Watson, April 1997.
3.
ERL (Asia) Ltd, 1988, Deep Bay Integrated
Environmental management, Vol 2, The Impacts of Development, August 1998.
4. Zhao Huantung, 1983, Hydrological characteristics of the Zhujiang (Pearl) River Delta. Tropical Oceanology Vol 2, No. 2, May 1983.
5. HR Wallingford, 1988, Hydraulic and water quality studies in Victoria Harbour, Mathematical modelling report – calibration of seasonal water movement and water quality models, Report EX 1690, May 1988.
6. HR Wallingford, 1993, Strategic Sewage Disposal Scheme, Hong Kong, Extended Seasonal Mathematical Model of Water Movement and Water Quality, Report EX 2864, August 1993.
7. Huang Xinhe, 1988, Water quality of the Zhujiang River (Guanghou River reach) in the early 1980’s Pollution of the Urban Environment, Polmet 88, Edit P Hills et al. Vincent. Blue Copy Co Ltd. 1988.
8. Wan Chai Development Phase II, Comprehensive Feasibility Study, Environmental Impact Assessment Report (June 2001).
Subsequent to this study, a number of reclamation projects have already been completed. These are namely:
·
Central Reclamation Phase I - At the site of
the new Airport Railway Development and Outlying Island Ferry Piers;
·
Central Reclamation Phase II - At the site of
the old HMS Tamar Basin; and
·
Wan Chai Reclamation Phase I - At the site of
the new extension to the Hong Kong Convention and Exhibition Centre.
The two remaining reclamation projects are Central Reclamation Phase III and Wan Chai Development Phase II. In 1994, a study into the feasibility of the CRIII commenced, which was referred to as the "Full Reclamation Option" (CRIII-FR) and concluded that a reclamation of 32 hectares would be required for the necessary proposed infrastructure works.
The Central District (Extension) Outline Zoning Plan for the CRIII-SO was gazetted under the Town Planning Ordinance (in May 1998) and received a number of objections. The proposals were also reviewed during a LegCo Motion Debate (in July 1998) with LegCo members objecting unanimously to the proposed reclamation. In response, the Government undertook a process of reviewing the reclamation in order to minimise its extent but at the same time still provide sufficient land to meet the transport infrastructure requirements.
·
Central and Wanchai Reclamation Development -
Central Reclamation Phase 1, Focussed EIA Study (EIA-025/BC)
·
Central and Wanchai Reclamation Development
Focussed Study for the Proposed extension to the Hong Kong Convention and
Exhibition Centre - Stage 2, Final Report Volume 2 - Environment (EIA-030/BC)
·
Central and Wanchai Reclamation Development -
Central Reclamation Phase 2, Contract No. HK4/94 EIA Final Report Volume 1 and
2 (EIA-040/BC)
·
Strategic Sewage Disposal Scheme Stage 1
Principal Collection and Treatment System - Supplementary EIA (EIA-090/BC)
·
Strategic Sewage Disposal Scheme Stage 1
Principal Collection and Treatment System EIA Volume 1 and 2 - Appendices
(EIA/092/BC)
·
The reclamation (Clause C.1) - The layout of
which is shown on Figure 14.9 (refer to Chapter 14). The size of the reclamation is 18 ha.
·
Primary and Distributor Roads (Clause A.1) -
The road network of which is shown on Figure 14.10 (refer to Chapter 14).
·
Central and Wanchai Bypass (CWB) (Clause A.7)
- The extent of which is shown on Figure 14.11 (refer to Chapter 14).
·
The North Island Line (NIL) Protection Works
within CRIII (Clause A.7) (the NIL
Protection Works belong to the Mass Transit Railway Corporation and it is proposed
that their construction be entrusted to CRIII to enable them to be constructed
along with the CRIII works) - The extent of which is shown on Figure 14.12
(refer to Chapter 14).
·
to identify and describe the elements of the
community and environment likely to cause adverse impacts on the proposed
development and/or likely to be affected by the proposed development including
both the natural and man-made environment;
·
to identify and quantify emission sources and
determine the significance of impacts on sensitive receivers and potential
affected uses;
·
to identify existing landscape features and
visual quality in the study area so as to evaluate the landscape and visual
impacts of the proposed development;
·
to identify and quantify the potential losses
or damage to flora, fauna and natural habitats;
·
to propose the provision of infrastructure or
mitigation measures so as to minimise pollution, environmental disturbances and
nuisances arising from the proposed development;
·
to identify and establish methods, measures
and standards for inclusion into the design, which are necessary to mitigate
environmental impacts to acceptable levels;
·
to identify constraints associated with the
mitigation measures recommended in the study;
·
to work out the optimum conceptual layout
which, as far as is reasonably practical, mitigates environmental impacts in
line with the planning requirements; and
·
to confirm the acceptability, in
environmental terms, of the preferred development in line with the preferred
development parameters.
·
reclamation and seawalls, roads and
associated services, North Island Line Protection Works and Advance Trunk Road
Tunnel (ATRT) for the CWB;
·
reprovisioning of Star Ferry Pier, public
landing steps, wallah wallah moorings, and motor boat/launch operators' kiosks;
·
external cooling water systems which consist
of the cooling water pumping shells for future developments, and the
reprovisioning of existing cooling water pumping stations and associated
pipework systems and E&M works;
·
reprovisioning of existing Leisure and
Cultural Services Department (LCSD)'s facilities;
·
provision of a flood relief path, stormwater
culvert extensions, upgrading of hinterland stormwater drainage resulting from
the reclamation, demolition of the existing waterfront structures and necessary
landscaping;
·
the Hong Kong Station Extended Overrun Tunnel
(EOT) and associated ventilation structures entrusted for construction within
the CRIII works;
·
reprovisioning of the Government Heliport at
the Wan Chai PCWA and reprovisioning of the Wan Chai PCWA at Chai Wan Basin.
Government Heliport : Under Schedule 2, Section B.2, the reprovisioned heliport is more than 300 m from any existing or planned residential development. The heliport is also planned to be relocated from the site during the WDII project so is only a temporary use.
PCWA : Under Schedule 2, Section B.4, the reprovisioned cargo area is less than 1,000 m in length and is greater than 50 m from existing or planned sensitive uses. The area is also currently zoned as OU (Cargo Working Area) on the relevant OZP.
Table 2.1 : Existing Air Sensitive Receivers (ASRs)
ASR |
Description |
ASR |
Description |
A6 |
Crocodile Building |
A20 |
Central Barracks |
A7 |
Hang Seng Bank Headquarters |
A21 |
Central Barracks |
A8 |
Exchange Square III |
A22 |
Far East Financial Centre |
A9 |
Exchange Square I & II |
A23 |
Admiralty Centre |
A10 |
Exchange Square I & II |
A24 |
Harcourt Garden |
A11 |
Jardine House |
A25 |
Police Headquarters |
A12 |
Jardine House |
A26 |
HK Academy for Performing Arts |
A13 |
Statue Square |
A27 |
Arts Centre |
A14 |
Hong Kong Club Building |
A28 |
Citic Tower |
A15 |
City Hall |
A29 |
Servicemen's Guides Association |
A16 |
City Hall |
A30 |
HK Academy for Performing Arts |
A17 |
Furama Hotel |
A31 |
Shui On Centre |
A18 |
Hutchison House |
A33 |
Pedestrian Plaza |
A19 |
Bank of America Tower |
A34 |
HKCEC Extension |
Table 2.2 : Additional Future Air Sensitive Receivers (ASRs)
ASR |
Description |
A67 |
Comprehensive
Development Area Site |
A68 |
Airport Railway Hong
Kong Station |
A69 |
Future Commercial
Buildings and Landscaped Deck east of new Outlying Islands Ferry Piers (CDA
site) |
A70 |
Proposed Central
Government Complex |
A71 |
New G/IC site south
and east of Citic Tower (to include the redeveloped HK Red Cross
Headquarters) |
A72 |
New G/IC site north
of Citic Tower |
A73 |
Waterfront related
commercial and leisure uses |
A74 |
Open space promenade
along new reclamation edge |
A75 |
Festival Market |
A76 |
Waterfront related
commercial and leisure uses |
A77 |
Waterfront related
commercial and leisure uses |
A78 |
Grade A Office |
Key issues associated with Water Quality may be considered under two categories :
·
Construction Stage Issues; and
·
Operation Stage Issues
These are described further in the following paragraphs.
·
Dredged Material : 580,000m3
·
Surplus Soft Fill : 1,212,705m3
·
Marine Sand Fill : 1,805,650m3
·
Rock Fill : 650,000 m3
The areas where marine sand and surplus soft fill materials will be used is shown in Figure 2.4. The seawall foundations are currently envisaged to be constructed using rockfill materials. A site specific plan for the reclamation area using public fill should be submitted to EPD for final agreement before commencement of construction works.
·
suspension of solids in the water column
during dredging and filling activities and marine sediment dumping activities,
with the likely consequence of reduced DO levels and increased nutrient levels.
·
release of previously bound organic and
inorganic constituents such as heavy metals, PAHs, PCBs, ammonia, sulphides and
nutrients into the water column, either via suspension or by disturbance from
turbulent flow or mud waves as a result of dredging activities, disposal of
muds, or depositing fill materials;
·
release of contaminants from pore water and
leachate forced out of sediments as a result of compaction or settlement during
site formation;
·
release of the same contaminants due to
leakages and spillages as a result of poor handling and overflow from barges
during dredging and transport; and
The key landscape impacts at the construction stage will include:
·
impacts upon the existing landscape resource
of Victoria Harbour through reclamation;
·
impacts upon the existing waterfront resource
due to reclamation and use of waterfront for construction accesses and staging
areas;
·
impacts upon streetscape and sitting out
areas within the study area due to demolition and construction operations;
·
impacts upon landscape resources due to the
loss of amenity facilities, including the “Star” Ferry Pier pedestrian plaza
(which will be reprovisioned with a new pier prior to demolition), City Hall
Memorial Garden and two temporary parks; and
·
impacts upon the landscape character of the
waterfront.
The key landscape impacts at the operation stage will include:
·
impacts upon landscape resources due to the
loss of 18Ha of Victoria Harbour through reclamation;
·
impacts upon landscape character and
resources due to the implementation of the new Waterfront Park;
·
impacts upon landscape character and
resources due to the implementation of the landscaping works within the Statue
Square Open Space Corridor, Historic Corridor, Civil Corridor and Arts &
Entertainment Corridor;
·
impacts upon landscape character and
resources due to the implementation of new Streetscape landscaping works;
·
impacts upon landscape character and
resources due to the implementation of Landscape Decks;
·
impacts upon landscape character and
resources due to the implementation of Supplementary Landscape Spaces;
·
impacts upon landscape character and
resources due to the upgrading of streetscape and sitting out areas within the
study area; and
·
impacts upon landscape character and
resources due to the implementation of roads and built development.
The key visual impacts at the construction stage will include:
·
views of barges carrying fill, floating cranes
and dredging equipment;
·
loss of views to Victoria Harbour from
Visually Sensitive Receivers (VSRs) located to the east, south and west of the
study area;
·
loss of visual relationship between
Central-Wan Chai waterfront and Victoria Harbour;
·
views of reclamation activity including pipe,
cable, sewer and drainage works;
·
visual glare from welding and site
illumination;
·
rotational site traffic, deliveries and
cranes;
·
scaffolding and emergent structures; and
·
increased heavy vehicular traffic within the
Central-Wan Chai Districts.
The key visual impacts at the operation stage will include:
·
interference of, or obstruction to, views of
Victoria Harbour from north and east facing VSRs within Jardine House and
Exchange Square I and II;
·
interference of, or obstruction to, views of
Victoria Harbour from north facing VSRs within the Hong Kong Club Building,
Ritz Carlton Hotel and Furama Hotel;
·
interference of, or obstruction to, views of
Victoria Harbour from north facing VSRs within the Far East Finance Centre and
Admiralty Centre Towers I and II;
·
interference of views to Victoria Harbour
from north facing VSRs within lower residential blocks of Central Barracks
(e.g. Blake Block and Amethyst Block);
·
interference of or obstruction to views of
Victoria Harbour from north facing VSRs within Citic Tower;
·
interference of, or obstruction to, views of
Victoria Harbour from north west facing VSRs within the Hong Kong Police
Headquarters at May House; and
·
new views over the proposed Marine Basin and
Waterfront Promenade from north facing VSRs of the Grand Hyatt Hotel, Shui On Centre, Telecom House, Hong Kong Arts
Centre, and Harbour View International House.
Table 3.1 : Summary of Noise Standards
|
Noise Source |
||||
Uses |
Aircraft Noise
(NEF)* Chek Lap Kok Airport |
Helicopter
Noise Lmax dB(A) |
Road Traffic
Noise L10 |
Rail
Traffic Noise |
Fixed
Noise Source |
|
|
||||
All domestic premises including temporary housing
accommodation |
25 |
85 |
70 |
(a) (See
Note 3) The appropriate Acceptable Noise Levels shown in Table 3 of the
Technical Memorandum for the Assessment of Noise from Places Other than
Domestic Premises, Public Places or construction sites and (b) Lmax
(2300 – 0700) = 85 dB(A) |
(a) 5dB(A)
below the appropriate Acceptable Noise Levels (ANLs) shown in Table 3 of the
Technical Memorandum for the Assessment of noise from Places Other than
Domestic Premises, Public Places or Construction Sites or |
Hotels and hostels |
25 |
85 |
70 |
|
(b) the
prevailing background noise level |
Offices |
30 |
90 |
70 |
|
|
Educational institutions including kindergartens,
nurseries and all others where unaided voice communication is required |
25 |
85 |
65 |
|
(For quiet areas With level 5 dB(A) below the ANL) |
Places of public worship and courts of law |
25 |
85 |
65 |
|
|
Hospitals, clinics, convalescences and homes for the
aged diagnostic rooms wards |
25 |
85 |
55 |
|
|
Notes: * - NEF = Noise Exposure Forecast
1) The above standards apply to uses which rely
on opened windows for ventilation
2) The above standards should be viewed as the
maximum permissible noise levels assessed at 1m from the external façade.
3) Rail noise is under the control of the Noise
Control Ordinance and shall comply with the acceptable Noise Levels laid down
in the TM for the Assessment of Noise from Places other than Domestic Premises,
Public Places or Construction Sites.
Table 3.2 : Basic Noise Levels in dB(A) (BNLs)
Time Period |
ASR “A” |
ASR “B” |
ASR “C” |
All days during the evening (19:00-23:00) and general holidays (and
Sundays) during the days and evening (07:00-23:00) |
60 |
65 |
70 |
All days during the night time (23:00-07:00) |
45 |
50 |
55 |
Note: ASR
= Area Sensitivity Rating
Table 3.3 : Area Sensitivity Ratings
Area Type |
Not Affected |
Indirectly Affected |
Directly Affected |
Rural area, including country parks or village type developments |
A |
B |
B |
Low density residential area consisting of low rise or isolated high
rise development |
A |
B |
C |
Urban area |
B |
C |
C |
Area other than those above |
B |
B |
C |
Table 3.4 : Basic Noise Levels in dB(A) (BNLs) for Designated Areas
Time Period |
ASR “A” |
ASR “B” |
ASR “C” |
All days during the evening (19:00-23:00) and general holidays (and
Sundays) during the days and evening (07:00:23:00) |
45 |
50 |
55 |
All days during the night time (23:00-07:00) |
30 |
35 |
40 |
The Technical Memorandum for the Assessment of Noise from Places other then Domestic Premises, Public Places or Construction Sites, specifies the maximum permissible noise levels from fixed sources. These are given in Table 3.5.
Table 3.5 : Environmental Standards for Fixed Noise Sources dB(A)
Time Period |
ASR A |
ASR B |
ASR C |
Day (0700 – 1900) |
60 |
65 |
70 |
Evening (1900 – 2300) |
60 |
65 |
70 |
Night (2300 – 0700) |
50 |
55 |
60 |
Table 3.6 : Air Quality Objectives
Concentration in mg/m3 (a) |
|||||
Pollutant |
Averaging Time |
||||
|
1 hour (b) |
8 hours (c) |
24 hours (c) |
3 months (d) |
1 year (d) |
SO2 |
800 |
|
350 |
|
80 |
TSP |
500 (g) |
|
260 |
|
80 |
RSP (e) |
|
|
180 |
|
55 |
NO2 |
300 |
|
150 |
|
80 |
CO |
30,000 |
10,000 |
|
|
|
O3 (f) |
240 |
|
|
|
|
Pb |
|
|
|
1.5 |
|
Note : (a) Measured at 298K (25oC) and 101.325
kPa (one atmosphere).
(b) Not to be exceeded more than three times per
year.
(c) Not to be exceeded more than once per year.
(d) Arithmetic means.
(e) Respirable suspended particulates means
suspended particulates in air with a nominal aerodynamic diameter of 10
micrometers or smaller.
(f) Photochemical oxidants are determined by
measurement of ozone only.
(g) Limit for construction dust assessment given
in the EIAO TM
Table 3.7 : Standards for effluents discharged into the Marine Waters of Victoria Harbour Water Control Zone (All units in mg/l; all figures are upper limits unless otherwise indicated)
Flow rate (m3/day) Determinant |
£10 |
>10 and £200 |
>200 and £400 |
>400 and £600 |
>600 and £800 |
>800 and £1000 |
>1000 and £1500 |
>1500 and £2000 |
>2000 and £3000 |
>3000 and £4000 |
>4000 and £5000 |
>5000 and £6000 |
pH (pH units) |
6-10 |
6-10 |
6-10 |
6-10 |
6-10 |
6-10 |
6-10 |
6-10 |
6-10 |
6-10 |
6-10 |
6-10 |
Temperature (co) |
45 |
45 |
45 |
45 |
45 |
45 |
45 |
45 |
45 |
45 |
45 |
45 |
Colour |
4 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
Suspended solids |
700 |
600 |
600 |
500 |
375 |
300 |
200 |
150 |
100 |
75 |
60 |
40 |
BOD |
700 |
600 |
600 |
500 |
375 |
300 |
200 |
150 |
100 |
75 |
60 |
40 |
COD |
1500 |
1200 |
1200 |
1000 |
700 |
600 |
400 |
300 |
200 |
100 |
100 |
85 |
Oil & Grease |
50 |
50 |
50 |
30 |
25 |
20 |
20 |
20 |
20 |
20 |
20 |
20 |
Iron |
20 |
15 |
13 |
10 |
7.5 |
6 |
4 |
3 |
2 |
1.5 |
1.2 |
1 |
Boron |
6 |
5 |
4 |
3.5 |
2.5 |
2 |
1.5 |
1 |
0.7 |
0.5 |
0.4 |
0.3 |
Barium |
6 |
5 |
4 |
3.5 |
2.5 |
2 |
1.5 |
1 |
0.7 |
0.5 |
0.4 |
0.3 |
Mercury |
0.1 |
0.1 |
0.05 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
Cadmium |
0.1 |
0.1 |
0.05 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
Other toxic metals |
2 |
1.5 |
1 |
0.8 |
0.6 |
0.5 |
0.32 |
0.24 |
0.16 |
0.12 |
0.1 |
0.1 |
Total toxic metals |
4 |
3 |
2 |
1.6 |
1.2 |
1 |
0.64 |
0.48 |
0.32 |
0.24 |
0.2 |
0.14 |
Cyanide |
1 |
0.5 |
0.5 |
0.5 |
0.4 |
0.3 |
0.2 |
0.1 |
0.1 |
0.08 |
0.06 |
0.04 |
Phenols |
0.5 |
0.5 |
0.5 |
0.3 |
0.3 |
0.2 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
Sulphide |
5 |
5 |
5 |
5 |
5 |
5 |
2.5 |
2.5 |
1.5 |
1 |
1 |
0.5 |
Total residual
chlorine |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
Total nitrogen |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
50 |
Total phosphorus |
10 |
10 |
10 |
10 |
10 |
10 |
10 |
10 |
10 |
10 |
10 |
5 |
Surfactants (total) |
30 |
20 |
20 |
20 |
15 |
15 |
15 |
15 |
15 |
15 |
15 |
15 |
E.coli (count/100ml) |
5000 |
5000 |
5000 |
5000 |
5000 |
5000 |
5000 |
5000 |
5000 |
5000 |
5000 |
5000 |
Table 3.8 : Standards for effluents discharged into the Inshore waters of Victoria Harbour Water Control Zone (All units in mg/L; all figures are upper limits unless otherwise indicated)
Flow rate |
£10 |
>10 and £200 |
>200 and £400 |
>400 and £600 |
>600 and £800 |
>800 and £1000 |
>1000 and £1500 |
>1500 and £2000 |
>2000 and £3000 |
>3000 and £4000 |
>4000 and £5000 |
>5000 and £6000 |
pH (pH units) |
6-9 |
6-9 |
6-9 |
6-9 |
6-9 |
6-9 |
6-9 |
6-9 |
6-9 |
6-9 |
6-9 |
6-9 |
Temperature (co) |
40 |
40 |
40 |
40 |
40 |
40 |
40 |
40 |
40 |
40 |
40 |
40 |
Colour |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
Suspended solids |
50 |
30 |
30 |
30 |
30 |
30 |
30 |
30 |
30 |
30 |
30 |
30 |
BOD |
50 |
20 |
20 |
20 |
20 |
20 |
20 |
20 |
20 |
20 |
20 |
20 |
COD |
100 |
80 |
80 |
80 |
80 |
80 |
80 |
80 |
80 |
80 |
80 |
80 |
Oil & Grease |
30 |
20 |
20 |
20 |
20 |
20 |
20 |
20 |
20 |
20 |
20 |
20 |
Iron |
15 |
10 |
10 |
7 |
5 |
4 |
2.7 |
2 |
1.3 |
1 |
1.8 |
0.6 |
Boron |
5 |
4 |
3 |
2.7 |
2 |
1.6 |
1.1 |
0.8 |
0.5 |
0.4 |
0.3 |
0.2 |
Barium |
5 |
4 |
3 |
2.7 |
2 |
1.6 |
1.1 |
0.8 |
0.5 |
0.4 |
0.3 |
0.2 |
Mercury |
0.1 |
0.1 |
0.05 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
Cadmium |
0.1 |
0.1 |
0.05 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
0.001 |
Other toxic metals
individually |
1 |
1 |
0.8 |
0.7 |
0.5 |
0.4 |
0.25 |
0.2 |
0.15 |
0.1 |
0.1 |
0.1 |
Total toxic metals |
2 |
2 |
1.6 |
1.4 |
1 |
0.8 |
0.5 |
0.4 |
0.3 |
0.2 |
0.14 |
0.1 |
Cyanide |
0.2 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.05 |
0.05 |
0.03 |
0.02 |
0.02 |
0.01 |
Phenols |
0.5 |
0.5 |
0.5 |
0.3 |
0.25 |
0.2 |
0.13 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
Sulphide |
5 |
5 |
5 |
5 |
5 |
5 |
2.5 |
2.5 |
1.5 |
1 |
1 |
0.5 |
Total residual
chlorine |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
Total nitrogen |
100 |
100 |
100 |
100 |
100 |
100 |
80 |
80 |
50 |
50 |
50 |
50 |
Total phosphorus |
10 |
10 |
10 |
10 |
10 |
10 |
8 |
8 |
5 |
5 |
5 |
5 |
Surfactants (total) |
20 |
15 |
15 |
15 |
15 |
15 |
10 |
10 |
10 |
10 |
10 |
10 |
E.coli (count/100ml) |
5000 |
5000 |
5000 |
5000 |
5000 |
5000 |
5000 |
5000 |
5000 |
5000 |
5000 |
5000 |
Table 3.9 : Water Quality Objectives (WQOs) (All Phases) for Victoria Harbour
Water Quality Objective |
Part or Parts of Zone |
A. AESTHETIC
APPEARANCE |
|
There should
be no objectionable odours of discolouration of the water. |
Whole
zone |
Tarry
residues, floating wood, articles made of glass, plastic, rubber or of any
other substances should be absent. |
Whole
zone |
Mineral oil
should not be visible on the surface.
Surfactants should not give rise to a lasting foam. |
Whole
zone |
There should
be no recognisable sewage-derived debris. |
Whole
zone |
Floating,
submerged and semi-submerged objects of a size likely to interfere with the
free movement of vessels, or cause damage to vessels, should be absent. |
Whole
zone |
The water
should not contain substances which settle to form objectionable deposits. |
Whole
zone |
B. BACTERIA |
|
The level of
Escherichia coli should not exceed 1 000 per 100 mL, calculated as the
geometric mean of the most recent 5 consecutive samples taken at intervals of
between 7 and 21 days. |
Inland
waters |
C. COLOUR |
|
Human activity
should not cause the colour of water to exceed 50 Hazen units. |
Inland
waters |
D. DISSOLVED
OXYGEN |
|
a) The level of dissolved oxygen should not
fall below 4 mg per litre for 90% of the sampling occasions during the whole
year; values should be calculated as the annual water column average (see
Note). In addition, the concentration
of dissolved oxygen should not be less than 2 mg per litre within 2 m of the
seabed for 90% of the sampling occasions during the whole year. b) The level of dissolved oxygen should not
be less than 4 mg per litre. |
Marine waters Inland waters |
E. pH |
|
a) The pH of the water should be within the
range of 6.5-8.5 units. In addition,
human activity should not cause the natural pH range to be extended by more
than 0.2 unit. |
Marine waters |
b) Human activity should not cause the pH of
the water to exceed the range of 6.0-9.0 units. |
Inland waters |
F. TEMPERATURE |
|
Human activity should not cause the daily temperature range to change
by more than 2.0 oC. |
Whole zone |
G. SALINITY |
|
Human activity should not cause the salinity
level to change by more than 10%. |
Whole zone |
Table 3.9
: Water Quality Objectives
(WQOs) (All Phases) for Victoria Harbour (Cont’d)
Water Quality Objective |
Part or Parts of Zone |
H. SUSPENDED
SOLIDS |
|
a) Human activity should neither cause the
suspended solids concentration to be raised more than 30% nor give rise to
accumulation of suspended solids which may adversely affect aquatic
communities. |
Marine waters |
b) Human activity should not cause the annual
median of suspended solids to exceed 25 mg per litre. |
Inland waters |
I. AMMONIA |
|
The un-ionized ammoniacal nitrogen level
should not be more than 0.021 mg per litre, calculated as the annual average
(arithmetic mean). |
Whole zone |
J. NUTRIENTS |
|
a) Nutrients should not be present in
quantities sufficient to cause excessive or nuisance growth of algae or other
aquatic plants. |
Marine waters |
b) Without limiting the generally of
objective (a) above, the level of inorganic nitrogen should not exceed 0.4 mg
per litre, expressed as annual water column average (see Note). |
Marine waters |
K. 5-DAY
BIOCHEMICAL OXYGEN DEMAND |
|
The 5-day biochemical oxygen demand should
exceed 5 mg per litre. |
Inland waters |
L. CHEMICAL
OXYGEN DEMAND |
|
The
chemical oxygen demand should not exceed 30 mg per litre. |
Inland waters |
M. TOXIC
SUBSTANCES |
|
a) Toxic substances in the water should not
attain such levels as to produce significant toxic, carcinogenic, mutagenic
or teratogenic effects in humans, fish or any other aquatic organisms, with
due regard to biologically cumulative effects in food chains and to
interactions of toxic substances with each other. |
Whole zone |
b) Human activity should not cause a risk to
any beneficial use of the aquatic environment. |
Whole zone |
Note: Expressed normally as the arithmetic mean
of at least 3 measurements at 1 m below surface, mid depth and 1 m above the
seabed. However in water of a depth
of 5 m or less the mean shall be that of 2 measurements (1m below surface and
1m above seabed), and in water of less than 3 m the 1 m below surface sample
only shall apply. |
Table 3.10 : Water Quality Objectives for Flushing Purposes
|
Water Quality Objectives of sea water at intake point of salt water pumping stations for flushing |
Colour (H.U.) |
<20 |
Turbidity (N.T.U.) |
<10 |
Threshold Odour No. |
<100 |
Ammoniacal Nitrogen |
<1 |
Suspended Solids |
<10 |
Dissolved Oxygen |
>2 |
Biochemical Oxygen Demand (5 days) |
<10 |
Synthetic Detergents |
<5 |
E. Coli / 100mL |
<20,000 |
Chemical data expressed in mg/L
·
mature native woodland greater than 1 ha;
·
undisturbed natural coastal area larger than
1 ha or longer than 500 m in linear measurement;
·
inter-tidal mudflats larger than 1 ha;
·
established mangrove stands of any size;
·
brackish or freshwater marshes larger than
0.5 ha;
·
established seagrass bed of any size;
·
natural stream courses or rivers longer than
1,000 m;
·
established coral communities of any size;
and
·
other habitats found to have special
conservation importance by documented scientific studies.
·
naturalness (unmodified by man);
·
size;
·
diversity;
·
rarity (habitats and species);
·
re-creatability;
·
fragmentation;
·
ecological linkage;
·
potential value (through natural improvement
or improved management);
·
nursery/breeding ground;
·
age; and
·
abundance/richness of wildlife.
·
habitat quality (evaluated on the basis of
the criteria above);
·
presence of ecologically important species;
·
size/abundance of habitat or organisms;
·
duration of impact;
·
reversibility of impact; and
·
magnitude of impact.
·
Waste Disposal Ordinance (Cap 354);
·
Waste Disposal (Chemical Waste)(General)
Regulation (Cap 354); and
·
Land Ordinance (Cap 28).
·
Class A: Uncontaminated material, for which
no special dredging, transport or disposal methods are required beyond those
which would normally be applied for the purpose of ensuring compliance with
EPD's Water Quality Objectives, or for protection of sensitive receptors near
the dredging or disposal areas.
·
Class B: Moderately contaminated material,
which requires special care during dredging and transport, and which must be
disposed of in a manner which minimises the loss of pollutants either into
solution or by re-suspension.
·
Class C: Seriously contaminated material,
which must be dredged and transported with great care, which cannot be dumped in
the gazetted marine disposal grounds and which must be effectively isolated
from the environment upon final disposal.
Table 3.11 : Classification of Sediments by Metal Content (mg/kg dry weight) According to EPD TC No. 1-1-92
Class |
Cd |
Cr |
Cu |
Hg |
Ni |
Pb |
Zn |
A |
0.0-0.9 |
0-49 |
0-54 |
0.0-0.7 |
0-34 |
0-64 |
0-140 |
B |
1.0-1.4 |
50-79 |
55-64 |
0.8-0.9 |
35-39 |
65-74 |
150-190 |
C |
1.5 or more |
80 or more |
65 or more |
1.0 or more |
40 or more |
75 or more |
200 or more |
Table 3.12 : Sediment
Quality Criteria for the Classification of Sediment
According to WBTC 3/2000
Contaminants |
LCEL |
UCEL |
Heavy Meat (mg/kg dry weight) |
||
Cadmium (Cd) |
1.5 |
4 |
Chromium (Cr) |
80 |
160 |
Copper (Cu) |
65 |
110 |
Mercury (Hg) |
0.5 |
1 |
Nickel (Ni) |
40 |
40 |
Lead (Pb) |
75 |
110 |
Silver (Ag) |
1 |
2 |
Zinc (Zn) |
200 |
270 |
Metalloid (mg/kg dry weight) |
||
Arsenic |
12 |
42 |
Organic-PAHs (mg/kg
dry weight) |
||
PAHs (Low Molecular Weight) |
550 |
3160 |
PAHs (High Molecular Weight) |
1700 |
9600 |
Organic-non-PAHs (mg/kg
dry weight) |
||
Total PCBs |
23 |
180 |
Organometallics (mg-TBT
L-1 in interstital water) |
||
Tributyltin |
0.15 |
0.15 |
Source: Appendix A of WBTC 3/2000
Note: LCEL
- Lower Chemical Exceedance Level
UCEL
- Upper Chemical Exceedance Level
Sediments are categorised with reference to the LCEL and UCEL, as follows:
Category L Sediment with all contaminant levels not exceeding the LCEL. The material must be dredged, transported and disposed of in a manner that minimises the loss of contaminants either into solution or by suspension.
Category M Sediment with any one or more contaminant levels exceeding the LCEL and none exceeding the UCEL. The material must be dredged and transported with care, and must be effectively isolated from the environment upon final disposal unless appropriate biological tests demonstrate that the material will not adversely affect the marine environment.
Category H Sediment with any one or more contaminant levels exceeding the UCEL. The material must be dredged and transported with great care, and must be effectively isolated from the environment upon final disposal.
·
WBTC 25/92 Allocation of Space for Urban
Trees;
·
WBTC 18/94 Management and Maintenance of both
Natural Vegetation and Landscape Works;
·
Hong Kong Planning Standards and Guidelines;
·
WBTC 24/94 and PELBTC 3/94 “Tree Preservation”;
and
·
HyDTC 6/98 - Visibility of Directional Signs.
·
Private vessel and ferry operations from the
existing Queen’s Pier, “Star” Ferry Piers and Tsim Sha Tsui East temporary
ferry pontoon must be maintained until completion and opening of the
reprovisioned ferry pier (Ferry Pier 8), public landing steps and refurbishment
of the existing Ferry Pier 7 is completed.
In addition to maintaining safe marine access during this period,
adequate land access will have to be maintained for pedestrians, public
transport and private vehicles. During
earlier studies, it was established that the existing public landing steps to
the immediate north of the Central Barracks at Tamar would need to be closed
prior to commencing the CRIII construction works. Marine Department have confirmed that these arrangements would
still apply to the Minimum Option works with the exception that the westernmost
set of landing steps within the existing seawall could be retained until the
reprovisioned public landing steps are completed and opened for use.
·
The flows from stormwater drainage culverts
F, J and K must be maintained at all times throughout the project works. Temporary diversions can be utilised subject
to satisfying the DSD that the flow capacity of the temporary diversions will
not cause any increased risk of upstream flooding in the existing hinterland
areas.
·
The operations of the existing cooling water
facilities located along the Central waterfront affected by the works must be
maintained until completion, commissioning and opening of the reprovisioned
facilities. This requirement involves
maintaining intake and outfall flows, maintaining water quality at the intakes
to acceptable levels and maintaining adequate maintenance access to the cooling
water facilities.
·
The provision of sufficient land at as early
a time as possible to permit construction of the following key infrastructure
works :
- The Central - Wanchai Bypass Tunnel; and
- The Hong Kong Station Extended Overrun Tunnel.
·
The existing Government Heliport located to
the north of Lung Wui Road is planned to be reprovisioned to the Wan Chai PCWA
as soon as possible after the start of the CRIII works. The timing of the relocation will be
dependent upon the timing of relocation of the Wan Chai PCWA to Chai Wan Basin.
· a military
berth for the PLA; and
· reprovisioned
ferry pier (Ferry Pier 8)and public landing steps.
At the completion of the CRIII works i.e. March 2007, based upon the current construction programme, land would be available for commencement of development of the promenade, open space areas and landscaped decks within future developments. Advancement of certain works may be possible and will be considered during the detailed design phase of the project.
Table 4.1 : Summary of Construction Tasks and Stages for CRIII
Stage |
Construction Period |
Site Area |
Main Construction Elements |
1 |
End Aug 2002 to End March 2003 |
Initial Reclamation Area West |
·
Dredging ·
Seawall
Construction ·
Sand
Filling ·
Civil
Works for Cooling Water Pumping Stations ·
Piling
for Ferry Pier 8 |
|
|
Hinterland Areas |
·
Public
Transport Facilities Behind Piers 4 - 6 ·
Piling
for EOT Vent Building |
2 |
Start April 2003 to End Nov 2003 |
Initial Reclamation Area West |
·
Sand
Filling and Vibrocompaction ·
Civil
Works for Cooling Water Pumping Stations ·
Superstructure
for Ferry Pier 8 ·
Piling
for Public Landing Steps (Stage 1) ·
Superstructure
for Public Landing Steps (Stage 1) |
|
|
Initial Reclamation Area East |
·
Dredging ·
Temporary
Diversion of Culvert J |
|
|
Hinterland Areas |
·
Public
Transport Facilities Behind Piers 6 - 7 ·
Sheet
Piling for EOT Vent Building ·
Superstructure
for EOT Vent Building ·
NIL
Protection Works, Stages 1& 2 |
3 |
Start Dec 2003 to End July 2004 |
Initial Reclamation Area West |
· Pipework for Cooling Water Pumping Stations · E&M and Finishing Works for Cooling Water Pumping Stations · Substations for Cooling Water Systems |
Table 4.1 : Summary of Construction Tasks and Stages
for CRIII (Cont'd)
Stage |
Construction Period |
Site Area |
Main Construction Elements |
3 |
|
Initial Reclamation Area East |
· Seawall Construction · Sand Filling and Vibrocompaction · Civil Works for Cooling Water Pumping Stations · Pipework for Cooling Water Pumping Stations · Substations for Cooling Water Systems · E&M and Finishing Works for Cooling Water Pumping Stations · Culvert J Construction · Central-Wan Chai Bypass Construction · NIL Protection Works, Stage 3 |
|
|
Hinterland Areas |
·
EOT
Vent Building Completion ·
NIL
Protection Works, Stages 1 & 2 ·
Drainage
Improvement Works at Connaught Place |
4 |
August 2004 |
Initial Reclamation Area East |
·
Central-Wan
Chai Bypass Construction |
|
|
Final Reclamation Area West |
·
Demolition
of Piers |
|
|
Hinterland Areas |
· Piling for EOT Vent Shafts · Drainage Improvement Works at Connaught Place |
5 |
Start Sept 2004 to End April 2005 |
Initial Reclamation Area East |
·
Central-Wan
Chai Bypass Construction |
|
|
Final Reclamation Area West |
· Dredging · Seawall Construction · Sand Filling · Surplus Soft Filling · Vibrocompaction · Temporary Diversion of Culvert F · Civil Works for Cooling Water Pumping Stations · Sheet Piling for EOT |
Table 4.1 : Summary of Construction Tasks and Stages
for CRIII (Cont'd)
Stage |
Construction Period |
Site Area |
Main Construction Elements |
|
|
Final Reclamation Area East |
· Dredging · Seawall Construction |
|
|
Hinterland Areas |
· EOT Vent Shaft Construction · Drainage Improvement Works at Connaught Place |
6 |
Start May 2005 to End Dec 2005 |
Final Reclamation Area West |
· Surplus Soft Filling and Vibrocompaction · Temporary Diversion of Culvert F · Foundations for Culvert F · Central Wan-Chai Bypass Construction · Sheet Piling for EOT · EOT Tunnel Construction · Piling and Superstructure for Public Landing Steps (Stage 2) · PLA Berth Construction |
|
|
Final Reclamation Area East |
· Sand Filling and Vibrocompaction · Civil Works for Cooling Water Pumping Stations · Culvert K Construction · NIL Protection Works, Stage 4 · Central-Wan Chai Bypass Construction · Road P2 Underpass |
7 |
Start Jan 2006 to End Oct 2006 |
Final Reclamation Area West |
· Culvert F Construction · Central-Wan Chai Bypass Construction · EOT Tunnel Construction · Foundations to Man Yiu Street Footbridge |
|
|
Final Reclamation Area East |
· Central-Wan Chai Bypass Construction · Road P2 Underpass |
|
|
All Areas |
· Drainage & Utility Works · At Grade Roads & Landscaping (Except Roads D5, D6 & P1) |
Table 4.1 : Summary of Construction Tasks and Stages
for CRIII (Cont'd)
Stage |
Construction Period |
Site Area |
Main Construction Elements |
8 |
Start Nov 2006 to End Mar 2007 |
Final Reclamation Area West |
· Man Yiu Street Footbridge Construction · Drainage & Utilities to Roads D5, D6 & P1 · PTI Construction · At Grade Roads & Landscaping to Roads D5, D6 & P1 |
Note:
1. Seawall Construction includes completion of
seawall foundations using rockfill materials.
2. Sand Filling relates to bulk reclamation
filling to above water level.
Table 4.2 : Summary of Construction Programme
·
Central – Wan Chai Bypass Project;
- The structural works for the Central – Wan Chai Bypass tunnel located within the CRIII site will be constructed as entrusted works to the CRIII project, no programme interface issues are present. Potential impacts from the construction of the tunnel structural works are included in this EIA assessment.
·
Central Government Complex Project;
- The programme for construction of the Central Government Complex is not fixed as advised by the Architectural Services Department. In addition, there are no construction details available for this project to enable cumulative impacts, if any, to be incorporated into this EIA Study.
·
Redevelopment of Police Headquarters (Phase
III) Project;
- The Police Headquarters redevelopment construction period overlaps slightly with the CRIII construction project with a target date for opening in early 2003. The location on Arsenal Street is sufficiently distant that cumulative impacts would not be anticipated.
·
Hong Kong Station Extended Overrun Tunnel
Project;
- Environmental Impacts arising from this project are included in this EIA assessment.
·
Central, Western and Wan Chai West Sewerage
Project;
- The Central, Western and Wan Chai West Sewerage Project(CW3) comprises of reconstruction of interceptors and reticulation sewer system, two trunk sewers (between Smithfield and Pottinger Street and between Ice House Street and Wan Chai East Screening Plant), two pumping stations (Central Pumping Station and Wan Chai East Pumping Station) and an extension to the Wan Chai East Screening Plant facilities. The CW3 works which will directly interface with the CRIII construction works will have been completed before the start of the CRIII works. There will not, therefore, be any overlap with the sewerage system works.
·
Justice Drive Extension Project;
- The Justice Drive Extension (JDE) Project comprises of the construction of an extension to the existing flyover across Queensway onto the CRIII site and an extension from Supreme Court Road to Kennedy Road (known as the Queen’s Lines Link). The Justice Drive Extension Project is needed to enhance north-south connectivity between the north shore and the hinterland areas of Hong Kong Island. The JDE is only about 450m long and consists of prestressed cast in-situ bridge deck.
- The northern most section of the proposed Justice Drive Extension (JDE) is located within the CRIII construction works area (from Harcourt Road to the new primary distributor road P2). This section of JDE is largely elevated carriageway but at its extreme northern end it ramps down to connect with Road P2 at an at-grade junction. There would therefore only be minor construction interfaces between the JDE and CRIII projects.
- The programme for the Justice Drive Extension Project is currently under review by Transport Department.
- The Kennedy Road Improvements and Queen’s Lines Link works have recently been degazetted. The need and scope of the Justice Drive Extension, Kennedy Road Improvements and Queen’s Lines Link projects are, however, still being reviewed by Transport Department.
·
North Hong Kong Island Drainage Master Plan
Study;
- The currently proposed works are outside the limit of the CRIII study area. The tentative programme for construction works as provided by DSD is as follows :
§ Lower Catchment Improvement Works Dec 2004 – July 2012
§ HK West Drainage Tunnel Works Sept 2006 – March 2011
Based upon the currently available information, no programme interface issues are anticipated from this project.
·
Wan Chai Development Phase II Project;
The scope of the Wan Chai Development Phase (WDII) project comprises:
§ Land formation for key transport infrastructure and facilities including the Central-Wan Chai Bypass, the Island Eastern Corridor Link, the North Island Line, ground level road connections to facilitate through traffic from Central to Wan Chai, a possible fourth harbour cross rail link, a Government Heliport, and a waterfront promenade with associated / supporting facilities;
§ Reprovisioning / protection of existing facilities and structures affected by the land formation; and
§ Extension, modification, reprovisioning or protection of existing stormwater drainage outfalls, sewerage outfalls, Wan Chai East Screening Plant and watermains affected by the land formation.
The WDII project provides essential land for the construction of major road and rail infrastructure required to relieve congestion on strategic east-west routes through Central, Wan Chai and Causeway Bay. The WDII Project also provides the opportunity to create an attractive waterfront that can be used for a wide range of recreational and tourism related uses and functions.
The WDII works are currently planned to commence in early 2004 with completion of the project by early 2010. Works would commence in the Wan Chai and Causeway Bay areas in early 2004, with the works adjacent to the CRIII area i.e. from Lung King Street up to the eastern side of the Hong Kong Convention and Exhibition Centre commencing in early 2006.
·
North Island Line Railway Project;
The North Island Line (NIL) comprises of the construction of a new underground railway for the northern shore of Hong Kong Island. The railway will link the Airport Railway Hong Kong Station with Fortress Hill Station with intermediate stations at Tamar and Exhibition.
Preliminary design works for the NIL project commenced in late 2000. At present there is no fixed programme for the construction of the NIL but it is proposed that some station protection works for the NIL be constructed as part of the CRIII project. These are included in this CRIII assessment.
·
Refurbishment of Ferry Piers 4 – 6 Project.
- In order to enhance the quality of the existing Ferry Piers 4 - 6 constructed as part of the Central Reclamation Phase I project, the Government is to award a contract to carry out refurbishment works to the piers. The refurbishment works are expected to include provision of external glazing/cladding to the piers and replacement / upgrading of existing facilities as required.
- It is understood that the extent of the works has yet to be finalised and as such a programme for implementation of the works is not available.
Table 4.3 : Timings of Interfacing Projects
Road Speed
Used in Assessment
Roads P1 and P2 70 km per hour
All other roads 50 km per hour
The speed for roads P1 and P2, within the CRIII area, used in the assessment is the design speed for these roads as advised by the Transport Department. It should be noted, however, that the Transport Department have also confirmed that all at-grade roads within CRIII will be subject to a speed limit of 50km per hour (refer to Transport Department letter included in Appendix D of this EIA Report).
Table 5.1 : Predicted Cumulative Traffic Noise Levels for Year 2027
Location |
Floor |
Existing Road Contribution dB(A) |
New Road Contribution dB(A) |
Total dB(A) |
NR11 |
1 |
71.1 |
69.1 |
73.2 |
|
7 |
71.1 |
69.1 |
73.3 |
|
13 |
70.9 |
68.6 |
72.9 |
|
19 |
70.5 |
68.2 |
72.5 |
|
25 |
70.0 |
67.6 |
72.0 |
|
31 |
69.6 |
67.0 |
71.5 |
NR22 |
1 |
56.0 |
77.6 |
77.7 |
|
3 |
56.0 |
76.7 |
76.8 |
|
5 |
56.2 |
75.6 |
75.6 |
NR33 |
1 |
51.1 |
76.8 |
76.8 |
|
3 |
51.5 |
76.5 |
76.6 |
|
5 |
52.5 |
76.2 |
76.2 |
|
7 |
53.7 |
75.8 |
75.8 |
NR4 |
GL |
53.2 |
55.0 |
57.2 |
NR5 |
GL |
55.4 |
54.3 |
57.9 |
NR6 |
GL |
53.2 |
55.8 |
57.7 |
NR7 |
GL |
57.6 |
52.1 |
58.7 |
NSR8 |
GL |
64.7 |
55.7 |
65.2 |
NR9 |
1 |
60.3 |
70.2 |
70.6 |
|
3 |
60.2 |
70.2 |
70.6 |
|
5 |
60.2 |
70.1 |
70.5 |
|
7 |
60.1 |
70.0 |
70.4 |
|
9 |
60.1 |
69.8 |
70.3 |
NR10 |
1 |
78.1 |
67.6 |
78.5 |
|
3 |
78.1 |
68.0 |
78.5 |
|
5 |
77.5 |
68.5 |
78.1 |
|
7 |
77.1 |
68.6 |
77.6 |
|
9 |
76.5 |
68.6 |
77.2 |
Notes: 1: Only
1st to 3rd and 16th to 28th floors are for
residential use.
2: Only
Ground to 4th floors are for residential use.
3: Only
Ground to 6th floors are for residential use.
4: New
Roads to be constructed under CRIII works are illustrated on Figure 14.10
(refer to Chapter 14).
·
demolition of existing water front structures;
·
dredging work and seawall construction;
·
piling and construction work for pumping
stations, PLA Berth, public landing steps, reprovisioned ferry pier, culverts
and associated services;
·
reclamation in-filling including noise from
filling and compaction activities;
·
haulage vehicles (although minimum in number
since transportation of spoil removed and reclamation materials will be by
barge);
·
infrastructure construction (e.g. utilities,
CWB tunnel, Hong Kong Station Extended Overrun Tunnel, North Island Line protection works, Road P2
Underpass and surface road network); and
·
hinterland drainage improvement works.
Amount by which Corrected Noise Level (CNL) exceeds Acceptable Noise Level (ANL), CNL-ANL |
Permitted hours of operation on any day not being a general holiday |
10 dB(A) < CNL-ANL |
0800 to 0900 and 1230 to 1330 and 1700 to 1800 |
0 dB(A) < CNL-ANL £ 10 dB(A) |
0800 to 0930 and 1200 to 1400 and 1630 to 1800 |
CNL - ANL £ 0 dB(A) |
0700 to 1900 |
Table 7.1: Summary of Unmitigated Construction Noise Levels Duirng Normal Working Hours
NR/NSR (refer to Figure 2.1) |
Minimum dB(A) |
Maximum dB(A) |
NR1 |
62 |
87 |
NR2 |
63 |
93 |
NR3 |
64 |
94 |
NSR8 |
56 |
81 |
NR9 |
65 |
93 |
Table 7.2: Summary of Unmitigated Construction Noise Levels Duirng Restricted Hours
Activity |
Prediction Point |
Minimum dB(A) |
Maximum dB(A) |
Dredging and Filling Works (1900 - 2300 hours) |
Mandarin Hotel |
58 |
69 |
Drainage Improvement Works in Connaught Place |
Mandarin Hotel |
76 |
76 |
Equipment Type |
BS Ref |
SWL, dB(A) |
Air compressor |
Table C7/16 |
96 |
Paver |
Table C8/24 |
101 |
Hand-held breaker |
Table C2/10 |
110 |
Breaker, excavator mounted |
Table C8/13 |
110 |
Bulldozer |
Table C3/27 |
109 |
Concrete lorry mixer |
Table C6/35 |
100 |
Concrete pump |
Table C6/36 |
106 |
Crane |
Table C7/114 |
101 |
Dump truck |
Table C9/27 |
105 |
Excavator / loader |
Table C3/97 |
105 |
Grader |
Table C9/11 |
110 |
Lorry |
Table C9/27 |
105 |
Poker |
Table C6/32 |
100 |
Road roller |
Table C8/27 |
104 |
Vibratory roller |
Table C3/116 |
106 |
Table 7.3 : Summary of Mitigated Construction Noise Levels During Normal Working Hours
NR/NSR (refer to Figure 2.1) |
Minimum dB(A) |
Maximum dB(A) |
NR1 |
61 |
79 |
NR2 |
62 |
84 |
NR3 |
63 |
84 |
NSR8 |
55 |
73 |
NR9 |
64 |
83 |
Table 7.4 : Summary of Mitigated Construction Noise Levels During Restricted Hours
Activity |
Receiver |
Minimum dB(A) |
Maximum dB(A) |
Dredging and Filling Works (1900 – 2300 hours) |
Mandarin Hotel |
58 |
69 |
Drainage Improvement Works in Connaught Place |
Mandarin Hotel |
66 |
66 |
·
Only well-maintained plant should be operated
on-site and plant should be serviced regularly during the construction
programme.
·
Silencers or mufflers on construction
equipment shoud be utilised and should be properly maintained during the
construction programme.
·
Mobile plant, if any, should be sited as far
away from noise sensitive facilities as possible.
·
Machines and plant (such as trucks) that may
be in intermittent use should be shut down between works periods or should be
throttled down to a minimum.
·
Plant known to emit noise strongly in one
direction should, wherever possible, be orientated so that the noise is
directed away from nearby noise sensitive facilities.
·
Material stockpiles and other structures
shoud be effectively utilised, wherever practicable, in screening noise from
on-site construction activites.
Table 8.1
: Measured Annual Average
Pollutant Levels µg/m3
at Central/Western Station (1999)
Pollutant |
Average (µgm-3) |
Nitrogen Dioxide (NO2) |
56 |
Carbon Monoxide (CO) |
1,179 |
Total Suspended Particulates (TSP) |
81 |
Respirable Suspended Particulates (RSP) |
53 |
·
Background pollutant levels within and
adjacent to the CRIII reclamation area;
·
Vehicle emissions from open sections of
existing and planned road networks;
·
Tunnel portal and ventilation building
emissions from the CWB; and
·
Portal emissions from the existing
underpasses, the planned Road P2 underpass and the planned deckovers along Road
P1, Road P2 and Connaught Road Central.
·
New roads in CRIII;
·
New roads in WDII;
·
The CWB; and
·
The existing roads (including Gloucester
Road, Harcourt Road, Connaught Road Central, Queensway, and Des Veoux Road
Central).
Table 8.2 : Emission Factors for Year 2011 for Different Vehicle Categories (EURO3)
Pollutant |
Emission Factors for 2011 (EURO3), g/km - veh |
|||
PV (1) |
LGV (2) |
HGV (3) |
PT (4) |
|
NOx |
0.73 |
1.53 |
3.84 |
6.8 |
RSP |
0.03 |
0.16 |
0.53 |
0.69 |
CO |
1.87 |
2.25 |
6.45 |
7.38 |
Notes: (1) Private Vehicles (PV) include taxi and
private car.
(2)
Light Goods
Vehicles (LGV) include passenger van and light goods vehicle.
(3)
HGV stands
for Heavy Goods Vehicles.
(4)
Public
Transport (PT) includes all types of buses.
·
Wind speed : 1 m s-1
·
Wind direction : 360
wind directions
·
Resolution : 1°
·
Wind variability : 24°
·
Stability class : D
·
Surface roughness : 1
m
·
Mixing height : 500 m
·
Tunnel portal and ventilation building
emissions from the tunnel section of the CWB;
·
Portal emissions from the planned Road P2
underpass;
·
Portal emissions from the existing
underpasses along Connaught Road Central; and
·
Portal emissions from the planned deckovers
along Road P1, Road P2 and Connaught Road Central.
It should be noted that the air quality inside the planned Road P2 underpass and deckovers along Road P1, Road P2 and Connaught Road Central will need to meet the air quality guidelines stipulated in the Practice Note on Control of Air Pollution in Vehicle Tunnel.
·
West Ventilation Building (WVB) : for
extracting vitiated tunnel air from Trunk Road Westbound;
·
Central Ventilation Building (CVB) : for
extracting vitiated tunnel air from Slip Road F and Wanchai Bypass Westbound;
·
Eastern Ventilation Building (EVB) : for
extracting vitiated tunnel air from Trunk Road Eastbound and Wanchai Bypass
Eastbound.
Table 8.3 : Portal and Ventilation Building Emissions
Type |
Emission Rate (g s-1) |
||
NO2* |
CO |
RSP |
|
Portal Emission |
|||
Trunk Road Eastbound |
0 |
0 |
0 |
Wanchai Bypass Eastbound |
0.02050 |
0.90250 |
0.00725 |
Slip Road F |
0 |
0 |
0 |
Wanchai Bypass Westbound |
0.09225 |
4.47750 |
0.02602 |
Trunk Road Westbound |
0.11750 |
4.60500 |
0.03819 |
Ventilation Building Emission |
|||
EVB – Trunk Road Eastbound |
0.84271 |
18.14583 |
0.26674 |
EVB – Wanchai Bypass Eastbound |
0.05668 |
2.49515 |
0.02176 |
CVB - Slip Road F |
0.12222 |
2.35556 |
0.01092 |
CVB – Wanchai Bypass Westbound |
0.04884 |
2.37044 |
0.00867 |
WVB – Trunk Road Westbound |
0.38364 |
14.23364 |
0.11457 |
Note: * Based on 20% NO2/NOx conversion
in ambient condition.
Table 8.4 : Design of Ventilation Buildings
|
Maximum capacity |
Exit velocity |
Minimum discharge height (meters above ground) |
Exhaust direction |
EVB – Trunk Road Eastbound |
570 |
8 |
25 |
Vertical |
EVB – Wanchai Bypass Eastbound |
200 |
8 |
25 |
Vertical |
CVB – Slip Road F |
180 |
8 |
15 |
Vertical |
CVB – Wanchai Bypass Westbound |
100 |
8 |
15 |
Vertical |
WVB – Trunk Road Westbound |
420 |
8 |
15 |
Vertical |
·
Wind speed : 1 m s-1
·
Wind direction : 360
wind directions
·
Resolution : 1°
·
Stability class : D
·
Mixing height : 500 m
·
Emission temperature : 7°
above ambient
·
The CALINE 4 model was used to predict the
open road emissions from the existing and planned road networks of CRIII, WDII
and CWB; and
·
The ISCST3 model was used to predict road
portal and ventilation shaft emissions.
Table 8.5 : Predicted Cumulative 1-hour Average NO2
, 24-hour Average NO2,
24-hour Average RSP and 1-hour Average CO concentrations at the CRIII Existing
and Future ASRs at 1.5m above ground level
|
|
Predicted
Concentration (mgm- 3 )* |
|||
ASR
No. |
ASR
Description |
1-Hour
NO2 |
24-Hour
NO2 |
24-Hour
RSP |
1
Hour CO |
A6 |
Crocodile Building |
212 |
118 |
80 |
2718 |
A7 |
Hang Seng Bank Headquarters |
237 |
128 |
84 |
2998 |
A8 |
Exchange Square III |
264 |
139 |
89 |
3076 |
A9 |
Exchange Square I & II |
153 |
95 |
71 |
2004 |
A10 |
Exchange Square I & II |
192 |
110 |
77 |
2324 |
A11 |
Jardine House |
144 |
91 |
69 |
1902 |
A12 |
Jardine House |
196 |
112 |
76 |
2401 |
A13 |
Statue Square |
234 |
127 |
82 |
2892 |
A14 |
Hong Kong Club
Building |
278 |
145 |
90 |
3234 |
A15 |
City Hall |
126 |
84 |
64 |
1989 |
A16 |
City Hall |
254 |
135 |
86 |
2943 |
A17 |
Furama Hotel |
277 |
144 |
90 |
3235 |
A18 |
Hutchison House |
241 |
130 |
83 |
3025 |
A19 |
Bank of America Tower |
264 |
139 |
87 |
3090 |
A20 |
Central Barracks |
127 |
84 |
64 |
2020 |
A21 |
Central Barracks |
205 |
116 |
77 |
2520 |
A22 |
Far
East Financial Centre |
246 |
132 |
84 |
3014 |
A23 |
Admiralty
Centre |
272 |
142 |
88 |
3293 |
A24 |
Harcourt
Garden |
248 |
133 |
85 |
2997 |
A25 |
Police
Headquarters |
245 |
131 |
85 |
2914 |
A26 |
HK
Academy for Performing Arts |
153 |
95 |
69 |
2162 |
A27 |
Arts
Centre |
179 |
105 |
72 |
2386 |
A28 |
Citic
Tower |
138 |
89 |
65 |
2225 |
A29 |
Servicemen's Guides Association |
134 |
87 |
65 |
2091 |
A30 |
HK
Academy for Performing Arts |
138 |
89 |
66 |
2457 |
A31 |
Shui On Centre |
143 |
91 |
67 |
2620 |
A33 |
Pedestrian
Plaza |
131 |
86 |
64 |
3053 |
A34 |
HKCEC Extension |
129 |
85 |
63 |
3089 |
A67 |
Comprehensive
Development Area Site |
147 |
92 |
67 |
3386 |
A68 |
Airport Railway Hong
Kong Station |
225 |
124 |
77 |
6621 |
A69 |
Future Commercial
Buildings and Landscaped Deck east of new Outlying Islands Ferry Piers (CDA
site) |
136 |
88 |
68 |
2399 |
A70 |
Proposed Central
Government Complex |
135 |
88 |
65 |
2049 |
A71 |
New G/IC site south
and east of Citic Tower (to include the redeveloped HK Red Cross
Headquarters) |
166 |
100 |
71 |
2196 |
A72 |
New G/IC site north
of Citic Tower |
158 |
97 |
69 |
2407 |
A73 |
Waterfront related
commercial and leisure uses |
147 |
92 |
67 |
2186 |
A74 |
Open space promenade
along new reclamation edge |
131 |
86 |
64 |
1939 |
A75 |
Festival Market |
125 |
83 |
64 |
1820 |
A76 |
Waterfront related
commercial and leisure uses |
141 |
90 |
67 |
2435 |
A77 |
Waterfront related
commercial and leisure uses |
167 |
100 |
70 |
3022 |
A78 |
Grade A Office |
137 |
89 |
66 |
2500 |
* Background Concentrations are included |
·
Dredging and Reclamation activities: For the reclamation method to be used, the
reclamation fill material would be either surplus soft fill material from land
formation projects or marine sand fill, delivered by barge and generally bottom
dumped. As the reclamation fill
material will generally be bottom dumped, potential for dust generation is
minimised.
·
Wind Erosion: Wind erosion of open site areas
will have potential for dust generation, dependent on the wind speed.
·
Vehicles Movements Over the Site and Haul
Roads: Vehicles movements over unpaved areas of the site will have potential
for dust generation.
·
Entrusted works (MTRC Hong Kong Station
Extended Overrun Tunnel, North Island
Line Protection Works and the Central and Wanchai Bypass): These activities
will involve provision of diaphragm walls (or sheet piles) in the new
reclamation, excavation and concreting activities.
·
Infrastructure construction: Construction of
the roads and provision of services will require limited site clearance,
excavations and materials movement.
Table 9.1 : Emission Factors for Construction Activities
Construction Activities |
Emission Factor, AP-42, 5th edition |
Road Construction, Building
Construction and Material Handling (as Heavy Construction) |
S.13.2.3.3 |
Material Handling (Excavation and
Backfilling) |
S.13.2.4 |
Truck Haulage |
S.13.2.2 |
Wind Erosion |
S.11.9.4 |
Table 9.2 : Different Major Dust Generating Activities in the Worst Case Scenarios during the construction of CRIII
Period |
2002 - 2003 |
2004 |
2005 |
2006 - 2007 |
||||
Worst month |
March 2003 |
August 2003 |
March 2004 |
October 2004 |
February 2005 |
May 2005 |
August 2005 |
July 2006 |
Activities |
Scenario 1 |
Scenario 2 |
Scenario 3 |
Scenario 4 |
Scenario 5 |
Scenario 6 |
Scenario 7 |
Scenario 8 |
1 |
Backfilling - IRAW |
Ferry Pier 8 Construction |
Backfilling - IRAE |
Culvert J Extension |
CWB in IRAE |
CWB in IRAE |
Culvert F Temporary
Extension |
Culvert F Extension |
2 |
EOT in IRAE |
Public Landing Steps |
Preliminary for Cooling
Water Systems in IRAE |
EOT in IRAE |
Backfilling - FRAW |
Backfilling - FRAW |
EOT in FRAW |
Drainage & Utilities |
3 |
North Island Line
Protection Works |
EOT in IRAE |
Culvert J Extension |
CWB in IRAE |
Culvert F Temporary
Extension |
Culvert F Temporary
Extension |
CWB in FRAW |
Roads |
4 |
Public Transport
Facilities behind Piers 4 - 7 |
North Island Line
Protection Works |
EOT in IRAE |
Hinterland Drainage at
Connaught Place |
EOT in FRAW |
EOT in FRAW |
Culvert K Extension |
Man Yiu Street Footbridge |
5 |
|
|
CWB in IRAE |
WDII Works Scenario 1 |
WDII Works Scenario 2 |
Backfilling - FRAE |
CWB in FRAE |
WDII Works Scenario 5 |
6 |
|
|
North Island Line
Protection Works |
|
|
WDII Works Scenario 3 |
Road P2 Underpass |
CWB Works - Central |
7 |
|
|
Hinterland Drainage at
Connaught Place |
|
|
|
WDII Works Scenario 4 |
|
Note:
Daily TSP concentration = 12/24* (1-hour average maximum TSP concentration during working hours) +12/24* (1-hour average maximum TSP concentration during non-working hours) + Background.
|
ASRS |
|||||||||||||||||||
|
|
Scen. 1 |
Scen. 2 |
Scen. 3 |
Scen. 4 |
Scen. 5 |
Scen. 6 |
Scen. 7 |
Scen. 8 |
Max. |
||||||||||
A6 |
131.2 |
133.2 |
175.6 |
182.3 |
532.4 |
591.1 |
238.1 |
445.6 |
591.1 |
|
||||||||||
A7 |
136.3 |
138.4 |
192.0 |
195.1 |
568.3 |
636.6 |
254.7 |
448.2 |
636.6 |
|
||||||||||
A8 |
147.1 |
149.7 |
221.7 |
220.5 |
649.3 |
727.6 |
284.0 |
501.3 |
727.6 |
|
||||||||||
A9 |
188.8 |
193.0 |
520.7 |
578.4 |
922.4 |
1006.5 |
424.4 |
623.8 |
1006.5 |
|
||||||||||
A10 |
180.5 |
184.6 |
576.8 |
628.8 |
722.3 |
780.0 |
345.5 |
510.8 |
780.0 |
|
||||||||||
A11 |
208.9 |
214.3 |
233.5 |
289.3 |
845.5 |
906.3 |
385.3 |
605.4 |
906.3 |
|
||||||||||
A12 |
201.2 |
206.3 |
228.3 |
290.5 |
762.9 |
807.1 |
340.3 |
537.1 |
807.1 |
|
||||||||||
A13 |
245.5 |
251.5 |
261.3 |
241.7 |
789.5 |
882.7 |
332.9 |
496.7 |
882.7 |
|
||||||||||
A14 |
294.6 |
303.4 |
308.9 |
264.7 |
932.2 |
1039.7 |
360.8 |
594.3 |
1039.7 |
|
||||||||||
A15 |
653.8 |
685.1 |
517.6 |
354.7 |
2582.3 |
2667.9 |
851.3 |
1310.7 |
2667.9 |
|
||||||||||
A16 |
329.7 |
339.0 |
332.2 |
276.4 |
1046.2 |
1153.7 |
401.4 |
696.6 |
1153.7 |
|
||||||||||
A17 |
319.6 |
331.7 |
357.5 |
292.3 |
1123.9 |
1250.8 |
383.0 |
608.2 |
1250.8 |
|
||||||||||
A18 |
300.7 |
315.6 |
380.3 |
326.5 |
1318.1 |
1456.9 |
390.0 |
556.4 |
1456.9 |
|
||||||||||
A19 |
283.4 |
292.6 |
374.1 |
336.8 |
1382.2 |
1501.0 |
395.5 |
540.0 |
1501.0 |
|
||||||||||
A20 |
1043.4 |
1045.5 |
1267.4 |
556.2 |
2134.1 |
2306.9 |
585.5 |
999.1 |
2306.9 |
|
||||||||||
A21 |
409.6 |
426.5 |
484.8 |
350.1 |
1914.7 |
2056.4 |
443.7 |
729.5 |
2056.4 |
|
||||||||||
A22 |
224.8 |
236.7 |
298.3 |
324.0 |
974.8 |
1185.6 |
375.2 |
517.8 |
1185.6 |
|
||||||||||
A23 |
201.0 |
220.1 |
271.0 |
296.2 |
762.1 |
930.4 |
326.7 |
452.2 |
930.4 |
|
||||||||||
A24 |
197.9 |
213.5 |
267.5 |
325.6 |
577.6 |
824.5 |
337.5 |
515.9 |
824.5 |
|
||||||||||
A25 |
198.2 |
203.0 |
309.7 |
365.0 |
549.8 |
979.8 |
398.3 |
526.0 |
979.8 |
|
||||||||||
A26 |
226.2 |
229.8 |
456.9 |
435.7 |
578.1 |
1296.1 |
494.4 |
648.1 |
1296.1 |
|
||||||||||
A27 |
166.8 |
169.3 |
261.2 |
390.9 |
607.4 |
1337.9 |
515.9 |
808.7 |
1337.9 |
|
||||||||||
A28 |
307.6 |
312.0 |
518.5 |
506.1 |
731.2 |
1337.6 |
478.7 |
701.1 |
1337.6 |
|
||||||||||
A29 |
257.4 |
262.3 |
469.5 |
594.6 |
711.9 |
1802.1 |
638.8 |
822.4 |
1802.1 |
|
||||||||||
A30 |
183.5 |
187.6 |
295.6 |
405.5 |
615.7 |
1731.7 |
628.6 |
813.4 |
1731.7 |
|
||||||||||
A31 |
154.3 |
157.0 |
223.8 |
390.4 |
623.2 |
1384.2 |
533.8 |
904.4 |
1384.2 |
|
||||||||||
A33 |
147.5 |
150.3 |
205.6 |
392.6 |
677.3 |
2513.1 |
879.7 |
1033.2 |
2513.1 |
|
||||||||||
A34 |
101.0 |
102.0 |
120.1 |
337.4 |
548.4 |
1593.2 |
721.1 |
1679.9 |
1679.9 |
|
||||||||||
* Background concentrations
are included.
|
ASRS |
Predicted Concentration (mg m –3) under different scenarios |
||||||||||||||||||
|
|
Scen. 1 |
Scen. 2 |
Scen. 3 |
Scen. 4 |
Scen. 5 |
Scen. 6 |
Scen. 7 |
Scen. 8 |
Max. |
||||||||||
A6 |
109.1 |
108.3 |
133.1 |
132.7 |
312.9 |
343.6 |
162.0 |
268.0 |
343.6 |
|
||||||||||
A7 |
111.7 |
111.0 |
141.6 |
139.2 |
331.1 |
366.2 |
170.5 |
269.2 |
366.2 |
|
||||||||||
A8 |
117.7 |
116.8 |
157.2 |
151.9 |
372.7 |
412.3 |
185.8 |
296.3 |
412.3 |
|
||||||||||
A9 |
139.5 |
139.4 |
309.1 |
331.2 |
513.4 |
554.7 |
257.6 |
360.7 |
554.7 |
|
||||||||||
A10 |
134.5 |
135.0 |
336.7 |
356.5 |
410.9 |
438.8 |
216.4 |
302.2 |
438.8 |
|
||||||||||
A11 |
148.9 |
150.6 |
166.6 |
187.0 |
473.5 |
502.9 |
236.8 |
349.7 |
502.9 |
|
||||||||||
A12 |
144.8 |
146.4 |
163.6 |
187.6 |
431.2 |
452.2 |
213.9 |
314.9 |
452.2 |
|
||||||||||
A13 |
166.8 |
170.0 |
181.5 |
163.5 |
443.2 |
489.5 |
210.0 |
295.1 |
489.5 |
|
||||||||||
A14 |
191.4 |
197.0 |
206.8 |
175.3 |
515.8 |
569.2 |
224.2 |
345.0 |
569.2 |
|
||||||||||
A15 |
372.7 |
396.2 |
323.0 |
220.8 |
1347.5 |
1388.6 |
472.7 |
706.1 |
1388.6 |
|
||||||||||
A16 |
209.3 |
215.6 |
219.8 |
181.1 |
573.8 |
626.1 |
244.8 |
397.3 |
626.1 |
|
||||||||||
A17 |
203.9 |
211.8 |
232.1 |
189.4 |
612.4 |
676.2 |
235.6 |
351.9 |
676.2 |
|
||||||||||
A18 |
194.2 |
203.4 |
244.3 |
206.9 |
709.5 |
780.8 |
239.1 |
325.3 |
780.8 |
|
||||||||||
A19 |
185.4 |
191.4 |
241.0 |
212.0 |
741.4 |
803.9 |
242.0 |
316.6 |
803.9 |
|
||||||||||
A20 |
566.7 |
584.5 |
719.3 |
322.7 |
1124.8 |
1212.5 |
339.4 |
547.2 |
1212.5 |
|
||||||||||
A21 |
249.3 |
261.4 |
300.2 |
218.6 |
1009.4 |
1081.4 |
266.6 |
412.5 |
1081.4 |
|
||||||||||
A22 |
155.4 |
162.3 |
201.1 |
206.2 |
536.7 |
646.1 |
231.6 |
304.5 |
646.1 |
|
||||||||||
A23 |
143.2 |
153.6 |
187.1 |
192.1 |
429.5 |
517.6 |
207.4 |
271.5 |
517.6 |
|
||||||||||
A24 |
141.3 |
150.1 |
185.5 |
207.2 |
336.8 |
465.9 |
213.0 |
303.6 |
465.9 |
|
||||||||||
A25 |
141.3 |
144.7 |
209.0 |
228.1 |
323.7 |
544.4 |
244.3 |
308.6 |
544.4 |
|
||||||||||
A26 |
155.5 |
158.6 |
289.0 |
267.9 |
342.5 |
712.8 |
293.9 |
371.4 |
712.8 |
|
||||||||||
A27 |
125.3 |
127.1 |
182.6 |
244.7 |
355.3 |
729.3 |
304.9 |
451.5 |
729.3 |
|
||||||||||
A28 |
196.6 |
201.5 |
327.6 |
300.8 |
418.2 |
734.8 |
284.9 |
396.8 |
734.8 |
|
||||||||||
A29 |
171.3 |
175.8 |
298.2 |
352.5 |
414.7 |
984.0 |
366.9 |
458.6 |
984.0 |
|
||||||||||
A30 |
133.9 |
136.8 |
202.7 |
255.2 |
363.0 |
933.4 |
363.0 |
454.6 |
933.4 |
|
||||||||||
A31 |
119.0 |
120.7 |
162.2 |
244.0 |
362.6 |
751.7 |
314.3 |
500.4 |
751.7 |
|
||||||||||
A33 |
115.7 |
117.6 |
154.7 |
255.5 |
400.1 |
1323.9 |
494.1 |
566.4 |
1323.9 |
|
||||||||||
A34 |
92.4 |
93.0 |
109.3 |
234.1 |
341.6 |
856.6 |
411.6 |
892.0 |
892.0 |
|
||||||||||
* Background concentrations
are included.
·
strictly limit the truck speed on site to
below 10 km per hour and water spraying to keep the haul roads in wet
condition;
·
twice daily watering of the work site with
active operations when the weather and the work site are dry;
·
watering during excavation and material
handling;
·
provision of vehicle wheel and body washing
facilities at the exit points of the site, combined with cleaning of public
roads where necessary; and
·
tarpaulin covering of all dusty vehicle loads
transported to, from and between site locations.
WDII (CWB entrusted work) and WDII (non-CWB entrusted work), managed by TDD
· Strictly limit
the truck speed on site to below 10km per hour and water spraying to keep the
haul roads in wet condition. This will
reduce the dust generation by about 90%, in accordance with Control Techniques
for Particulate Emissions from Stationary Sources, Volume 2, US Environmental
Protection Agency 1982.
· Twice daily
watering of the work site with active operations when the weather and the work
site are dry. Through the
implementation of this mitigation measure, dust emissions from materials
handling can be reduced by 50%, according to USEPA AP-42;
· Waterspraying
during excavation and material handling; this can reduce the emission by 85%;
· Provision of
vehicle wheel and body washing facilities at the exit points of the site,
combined with cleaning of public roads where necessary; and
· Tarpaulin
covering of all dusty vehicle loads transported to, from and between site
locations.
CWB project managed by HyD
· Strictly limit
the truck speed on site to below 10 km per hour and waterspraying to keep the
haul roads in wet condition;
· Twice daily
watering of the work site with active operations when the weather and the work
site are dry;
· Watering during
excavation and material handling;
· Provision of
vehicle wheel and body washing facilities at the exit points of the site,
combined with cleaning of public roads where necessary; and
· Tarpaulin
covering of all dusty vehicle loads transported to, from and between site
locations.
Table 9.5 : Predicted Cumulative 1-hour Average TSP Concentration for Scenarios 1 to 8 (Mitigated)
|
ASRS |
Predicted Concentration (mg m -3) under different scenarios |
||||||||||||||||||
|
|
Scen. 1 |
Scen. 2 |
Scen. 3 |
Scen. 4 |
Scen. 5 |
Scen. 6 |
Scen. 7 |
Scen. 8 |
Max. |
||||||||||
A6 |
89.2 |
88.8 |
93.8 |
93.2 |
130.2 |
135.5 |
99.1 |
167.1 |
167.1 |
|
||||||||||
A7 |
90.0 |
89.6 |
96.2 |
95.2 |
134.4 |
140.5 |
100.8 |
163.4 |
163.4 |
|
||||||||||
A8 |
91.7 |
91.3 |
100.4 |
98.4 |
143.7 |
150.7 |
103.9 |
176.0 |
176.0 |
|
||||||||||
A9 |
97.2 |
97.8 |
146.9 |
153.7 |
173.0 |
181.0 |
118.7 |
185.0 |
185.0 |
|
||||||||||
A10 |
95.9 |
96.5 |
155.4 |
161.4 |
150.4 |
155.3 |
110.2 |
161.6 |
161.6 |
|
||||||||||
A11 |
100.2 |
101.0 |
103.9 |
110.5 |
163.0 |
168.0 |
114.1 |
180.0 |
180.0 |
|
||||||||||
A12 |
99.0 |
99.8 |
103.1 |
110.8 |
154.3 |
157.4 |
109.6 |
167.8 |
167.8 |
|
||||||||||
A13 |
105.7 |
106.6 |
105.4 |
99.3 |
156.5 |
164.8 |
109.1 |
162.4 |
164.8 |
|
||||||||||
A14 |
113.0 |
114.4 |
112.3 |
101.8 |
171.2 |
180.5 |
112.2 |
170.6 |
180.5 |
|
||||||||||
A15 |
166.9 |
171.6 |
140.3 |
111.2 |
341.1 |
347.7 |
160.5 |
257.4 |
347.7 |
|
||||||||||
A16 |
118.3 |
119.7 |
115.3 |
102.9 |
183.3 |
192.7 |
116.1 |
187.8 |
192.7 |
|
||||||||||
A17 |
116.8 |
118.6 |
119.3 |
104.4 |
190.8 |
202.0 |
114.7 |
174.8 |
202.0 |
|
||||||||||
A18 |
113.9 |
116.2 |
122.8 |
108.7 |
210.7 |
222.6 |
116.4 |
158.8 |
222.6 |
|
||||||||||
A19 |
111.4 |
112.7 |
121.8 |
110.1 |
217.6 |
227.0 |
117.3 |
153.2 |
227.0 |
|
||||||||||
A20 |
225.4 |
225.7 |
251.3 |
132.1 |
295.8 |
310.9 |
135.2 |
209.2 |
310.9 |
|
||||||||||
A21 |
130.3 |
132.8 |
137.2 |
110.9 |
271.1 |
283.4 |
122.1 |
180.3 |
283.4 |
|
||||||||||
A22 |
102.6 |
104.4 |
110.4 |
107.5 |
175.0 |
195.7 |
114.7 |
149.3 |
195.7 |
|
||||||||||
A23 |
99.0 |
101.9 |
106.4 |
103.7 |
152.1 |
169.3 |
108.9 |
141.0 |
169.3 |
|
||||||||||
A24 |
98.4 |
100.9 |
105.2 |
106.5 |
133.4 |
158.8 |
110.3 |
142.8 |
158.8 |
|
||||||||||
A25 |
98.4 |
99.3 |
108.7 |
110.4 |
130.8 |
175.4 |
120.0 |
141.5 |
175.4 |
|
||||||||||
A26 |
102.7 |
103.3 |
125.9 |
117.6 |
133.9 |
207.4 |
132.4 |
156.7 |
207.4 |
|
||||||||||
A27 |
93.8 |
94.2 |
103.6 |
113.6 |
137.1 |
211.8 |
132.8 |
174.5 |
211.8 |
|
||||||||||
A28 |
114.7 |
115.6 |
132.8 |
126.6 |
151.9 |
211.2 |
130.7 |
165.1 |
211.2 |
|
||||||||||
A29 |
107.4 |
108.2 |
129.0 |
135.5 |
149.6 |
259.5 |
150.4 |
179.2 |
259.5 |
|
||||||||||
A30 |
97.3 |
97.0 |
108.2 |
114.7 |
137.5 |
253.0 |
150.9 |
176.0 |
253.0 |
|
||||||||||
A31 |
92.8 |
92.4 |
99.0 |
113.7 |
138.6 |
217.3 |
135.4 |
184.1 |
217.3 |
|
||||||||||
A33 |
93.1 |
91.4 |
96.8 |
117.2 |
144.5 |
335.9 |
184.8 |
195.0 |
335.9 |
|
||||||||||
A34 |
83.9 |
84.2 |
86.1 |
114.3 |
131.6 |
240.0 |
155.3 |
262.5 |
262.5 |
|
||||||||||
* Background concentrations are included.
Table 9.6 : Predicted Cumulative 24-hour Average TSP Concentration for Scenarios 1 to 8 (Mitigated)
|
ASRS |
Predicted Concentration (mg m -3) under different scenarios |
||||||||||||||||||
|
|
Scen. 1 |
Scen. 2 |
Scen. 3 |
Scen. 4 |
Scen. 5 |
Scen. 6 |
Scen. 7 |
Scen. 8 |
Max. |
||||||||||
A6 |
86.6 |
85.5 |
89.8 |
87.6 |
108.7 |
112.1 |
91.3 |
126.4 |
126.4 |
|
||||||||||
A7 |
87.0 |
85.9 |
91.1 |
88.7 |
110.9 |
114.5 |
92.2 |
124.5 |
124.5 |
|
||||||||||
A8 |
88.2 |
86.9 |
93.6 |
90.3 |
116.1 |
119.9 |
94.1 |
131.1 |
131.1 |
|
||||||||||
A9 |
91.4 |
90.6 |
118.1 |
118.1 |
132.9 |
136.4 |
102.3 |
137.1 |
137.1 |
|
||||||||||
A10 |
90.3 |
89.9 |
122.1 |
122.0 |
120.3 |
122.3 |
97.2 |
124.4 |
124.4 |
|
||||||||||
A11 |
92.6 |
92.5 |
97.1 |
96.7 |
127.1 |
129.1 |
99.3 |
133.7 |
133.7 |
|
||||||||||
A12 |
91.8 |
91.8 |
96.5 |
96.9 |
122.3 |
123.3 |
96.9 |
127.4 |
127.4 |
|
||||||||||
A13 |
95.1 |
95.7 |
98.4 |
91.2 |
123.2 |
126.7 |
96.6 |
124.8 |
126.7 |
|
||||||||||
A14 |
98.8 |
100.1 |
102.6 |
92.6 |
130.7 |
135.1 |
98.2 |
129.4 |
135.1 |
|
||||||||||
A15 |
126.6 |
132.9 |
122.5 |
97.6 |
219.0 |
221.4 |
124.0 |
174.3 |
221.4 |
|
||||||||||
A16 |
101.6 |
103.2 |
104.8 |
93.2 |
137.2 |
141.2 |
100.4 |
138.7 |
141.2 |
|
||||||||||
A17 |
100.7 |
102.5 |
106.6 |
94.1 |
140.9 |
146.6 |
99.6 |
131.5 |
146.6 |
|
||||||||||
A18 |
99.2 |
101.1 |
108.7 |
96.4 |
150.8 |
157.7 |
100.5 |
123.2 |
157.7 |
|
||||||||||
A19 |
97.8 |
99.2 |
108.1 |
97.1 |
154.2 |
160.4 |
101.0 |
120.2 |
160.4 |
|
||||||||||
A20 |
155.4 |
164.0 |
188.7 |
108.6 |
197.0 |
205.2 |
111.1 |
148.6 |
205.2 |
|
||||||||||
A21 |
107.6 |
110.7 |
117.8 |
97.5 |
181.8 |
188.5 |
103.7 |
134.3 |
188.5 |
|
||||||||||
A22 |
93.0 |
94.4 |
101.4 |
96.1 |
132.4 |
144.7 |
99.6 |
117.7 |
144.7 |
|
||||||||||
A23 |
91.1 |
93.0 |
99.2 |
94.1 |
120.5 |
131.1 |
96.7 |
113.4 |
131.1 |
|
||||||||||
A24 |
90.6 |
92.4 |
98.7 |
95.7 |
111.0 |
126.5 |
97.5 |
114.5 |
126.5 |
|
||||||||||
A25 |
90.5 |
91.5 |
101.7 |
98.3 |
110.1 |
135.2 |
102.8 |
113.8 |
135.2 |
|
||||||||||
A26 |
92.8 |
93.8 |
113.5 |
104.1 |
113.9 |
156.3 |
109.8 |
122.3 |
156.3 |
|
||||||||||
A27 |
88.1 |
88.6 |
98.0 |
101.7 |
114.6 |
156.3 |
110.1 |
131.1 |
156.3 |
|
||||||||||
A28 |
99.0 |
100.8 |
120.8 |
107.4 |
122.5 |
158.8 |
108.4 |
125.9 |
158.8 |
|
||||||||||
A29 |
95.2 |
96.7 |
116.5 |
115.6 |
124.4 |
191.3 |
119.2 |
133.6 |
191.3 |
|
||||||||||
A30 |
90.0 |
90.2 |
101.8 |
103.8 |
116.6 |
180.5 |
120.1 |
132.2 |
180.5 |
|
||||||||||
A31 |
87.6 |
87.5 |
94.9 |
101.5 |
115.1 |
158.7 |
111.6 |
136.4 |
158.7 |
|
||||||||||
A32 |
87.8 |
87.2 |
94.6 |
108.4 |
123.2 |
221.9 |
139.8 |
142.7 |
221.9 |
|
||||||||||
A33 |
83.2 |
83.3 |
87.9 |
110.1 |
119.7 |
170.3 |
123.4 |
177.5 |
177.5 |
|
||||||||||
* Background concentrations are included.
Table 10.1 : Water Sensitive Receivers (Sea Water Cooling Systems Intakes and Discharges)
Building |
Intake number (Refer to Figure 2.2 in Chapter 2) |
Discharge |
Buildings Directly Affected by CRIII: |
|
|
Prince's Building Group: Prince's Building, Alexandra House, Swire
House (Also flushing water to Bank of China Building, Hang Chong Building,
Holland House and Standard Chartered Bank)* |
1 |
Culvert F |
Mandarin Hotel |
1 |
Culvert F |
Hongkong and Shanghai Bank |
5,6 |
Culvert H |
Murray Road Car Park Group: Murray Road Car Park, Hutchison House and
Bank of America Tower |
8, 10 |
Culvert J1 |
Furama Hotel |
11 |
Culvert J3 |
Central Government Office: City Hall, LegCo, Murray Building and
Central Govt Offices |
8, 10 |
Culvert J1 |
Central Barracks |
12 |
Culvert J2 |
Pacific Place |
17 |
Culvert K2 |
Queensway Government Offices and Supreme Court Building |
18 |
Culvert K1 |
MTRC South Intake Structure |
21 |
Outfall "MTRC" |
Police Headquarters |
18 |
Culvert L |
HKAPA |
Not Applicable |
22 |
* The
building owner has confirmed that water quality requirements for the intake
cover all required uses for the water.
·
Kennedy Town;
·
Quarry Bay;
·
Sai Wan Ho;
·
Cha Kwo Ling;
·
Yau Tong;
·
Tai Wan
·
Yau Ma Tei; and
·
Cheung Sha Wan.
Table 10.2 : Summary Statistics of 1998 Water Quality – Victoria Harbour Central
|
Victoria Harbour Central |
||
Determinant |
VM4 |
VM5 |
VM6 |
Temperature (°C) |
23.7 (17.2 - 32.4) |
23.3 (17.1 - 27.8) |
23.3 (17.1 - 27.6) |
Salinity (ppt) |
30.9 (28.1 - 33.5) |
30.8 (27.3 - 33.2) |
30.6 (26.8 - 33.1) |
DO (mg/l) Bottom |
4.8 4.4 |
4.8 4.2 |
4.9 4.2 |
DO (% satn.) bottom |
69 64 |
68 59 |
70 59 |
pH value |
7.9 |
7.5 |
7.8 |
Secchi Disc (m) |
2.5 |
2.2 |
2.2 |
Turbidity (NTU) |
4.3 (2.9 – 6.7) |
4.5 |
4.4 |
Suspended Solids (mg/l) |
4.6 |
4.6 |
4.7 |
BOD5 (mg/l) |
1.0 |
1.2 |
1.2 |
Total Inorganic N (mg/l) |
0.43 |
0.45 |
0.44 |
Total N (mg/l) |
1.23 |
1.22 |
1.21 |
PO4 -P (mg/l) |
0.05 |
0.05 |
0.05 |
Total P (mg/l) |
0.09 (0.07 – 0.11) |
0.09 (0.06 - 0.12) |
0.09 |
Chlorophyll-a (µg/l) |
4.8 |
4.7 |
4.9 |
E. coli (cfu./100ml) |
8400 (910 - 82000) |
7200 |
5100 |
Table 10.3 : Summary Statistics of 1997 Water Quality – Victoria Harbour Central
|
Victoria Harbour Central |
||
Determinant |
VM4 |
VM5 |
VM6 |
Temperature (°C) |
23.1 |
23.1 |
23.1 |
Salinity (ppt) |
30.6 |
30.5 |
30.4 |
DO (mg/l) Bottom |
4.7 4.4 |
4.7 4.2 |
4.7 4.3 |
DO (% satn.) bottom |
66 61 |
66 58 |
66 60 |
pH value |
8.0 |
7.6 |
7.8 |
Secchi Disc (m) |
2.5 |
2.2 |
2.2 |
Turbidity (NTU) |
4.0 |
4.3 |
4.1 |
Suspended Solids (mg/l) |
5.7 |
6.4 |
6.6 |
BOD5 (mg/l) |
0.8 |
0.8 |
0.8 |
Total Inorganic N (mg/l) |
0.40 |
0.40 |
0.42 |
Total N (mg/l) |
1.23 |
1.20 |
1.22 |
PO4 -P (mg/l) |
0.05 |
0.05 |
0.05 |
Total P (mg/l) |
0.10 |
0.11 |
0.11 |
Chlorophyll a (µg/l) |
1.8 |
1.4 |
1.3 |
E. coli (cfu./100ml) |
8159 |
7494 |
10600 |
Table 10.4 : Summary Statistics of 1996 Water Quality – Victoria Harbour Central
|
Victoria Harbour Central |
||
Determinant |
VM4 |
VM5 |
VM6 |
Temperature(°C) Surface Bottom |
23.3 22.8 |
23.6 23.3 |
23.3 22.9 |
Salinity (ppt) Surface Bottom |
31.8 32.8 |
31.4 32.1 |
31.6 32.4 |
DO (% satn.) Surface Bottom |
69.1 60.4 |
69.4 64.2 |
76.1 62.3 |
DO (mg/l) Surface Bottom |
4.9 4.3 |
4.9 4.5 |
5.4 4.4 |
pH value |
7.9 |
7.9 |
7.9 |
Secchi Disc (m) |
2.0 |
1.9 |
1.8 |
Turbidity (NTU) |
3.9 |
4.1 |
4.2 |
Suspended Solids
(mg/l) |
7.5 |
8.3 |
8.9 |
BOD5 (mg/l) |
0.8 |
0.9 |
0.8 |
Total Inorganic N
(mg/l) |
0.33 |
0.36 |
0.36 |
Total N (mg/l) |
0.62 |
0.65 |
0.67 |
PO4 -P
(mg/l) |
0.05 |
0.05 |
0.05 |
Total P (mg/l) |
0.18 |
0.16 |
0.16 |
Chlorophyll a (µg/l) |
1.92 |
1.97 |
1.80 |
E. coli (cfu./100ml) |
7785 |
11373 |
5698 |
|
Table 10.5 : Summary Statistics of 1995 Water Quality – Victoria Harbour Central
|
|||
Determinant |
VM4 |
VM5 |
VM6 |
Temperature(°C) Surface Bottom |
22.8 22.2 |
22.8 22.1 |
2.8 22.2 |
Salinity (ppt) Surface Bottom |
30.5 32.2 |
30.3 32.2 |
30.2 32.2 |
DO (% satn.) Surface Bottom |
73.0 60.9 |
76.6 62.1 |
72.6 60.1 |
DO (mg/l) Surface Bottom |
5.2 4.4 |
5.5 4.5 |
5.2 44 |
pH value |
8.0 |
8.0 |
8.0 |
Secchi Disc (m) |
1.6 |
1.6 |
1.5 |
Turbidity (NTU) |
4.5 |
5.3 |
5.5 |
Suspended Solids
(mg/l) |
10.7 |
12.1 |
12.4 |
BOD5 (mg/l) |
0.8 |
0.8 |
0.9 |
Total Inorganic N
(mg/l) |
0.39 |
0.40 |
0.42 |
Total N (mg/l) |
0.66 |
0.68 |
0.71 |
PO4 -P
(mg/l) |
0.05 |
0.06 |
0.05 |
Total P (mg/l) |
0.13 |
0.13 |
0.12 |
Chlorophyll a (µg/l) |
2.49 |
2.18 |
3.21 |
E. coli (cfu./100ml) |
8033 |
6670 |
7444 |
Notes: 1. Except
as specified, data presented are depth-average data. 2. Data
presented are annual arithmetic means except for E. coli data which are
annual geometric means. 3. Data
enclosed in brackets indicate the ranges. Source: Marine Water Quality in Hong Kong
1995/6/7 |
·
Fast and slow dissolved BOD
·
Fast and slow particulate BOD
·
Fast and slow organic nitrogen
·
Ammoniacal
nitrogen1
·
Nitrite
·
Nitrate
·
Orthophosphate
·
Dissolved oxygen
·
Suspended sediment
·
Algal carbon and Chlorophyll-a
·
Detrital carbon
·
Coliforms
Calculation of unionised ammonia from ammoniacal nitrogen follows the methodology in "Rates, constants and kinetics formulation in surface water modelling", Report EPA/600/3-85/040, USEPA, Jun 1985.
Table 10.6 : Target Accuracies Used for the Calibration of the Hydrodynamic Model
Hydrodynamic variable |
Target accuracy |
Tidal elevation |
Within 8% |
Tidal phase |
Within 20 minutes |
Current speed |
Within 30% for speeds greater than 0.3m/s |
Current phase |
Within 20 minutes |
·
in-situ depth profiles of temperature,
dissolved oxygen, salinity and turbidity at selected monitoring stations for
the same periods as the hydrodynamic data collection;
·
laboratory determined water quality values
obtained from hourly samples compounded over five hour periods at the same
monitoring stations; and
·
EPD data collected as spot samples at three
depths at several locations over Hong Kong waters (not simultaneous with the
other data).
Table 10.7 : Values of the water quality parameters in the calibration
Model parameter |
Value |
Fast BOD decay rate (d-1) |
0.23 |
Fast organic nitrogen reaction rate (d-1) |
0.23 |
Nitrification rate (d-1) |
0.26 |
Denitrification rate (d-1) |
0.20 |
Nitrite oxidation rate (d-1) |
0.90 |
Detrital carbon reaction rate (d-1) |
0.046 |
Reaeration rate (m.h-1) |
0.2 |
Erosion rate (kg.N-1.s-1) |
0.0005 |
Slow to fast BOD reaction rate ratio |
0.2 |
Slow to fast organic nitrogen reaction rate ratio |
0.2 |
Nitrate to carbon ratio in algae |
0.16 |
Phosphorus to carbon ratio in algae |
0.024 |
Silicon to carbon ratio in algae |
0.0 |
Chlorophyll to carbon ratio in algae |
0.02 |
Deaeration ratio |
0.5 |
Algae light extinction coefficient |
1.70 |
Maximum respiration rate (d-1) |
0.02 |
Half saturation constant for nitrate ( mgl-1) |
0.1 |
Half saturation constant for phosphate ( mgl-1) |
0.014 |
Half saturation constant for silica ( mgl-1) |
0.0 |
Mortality rate for algae (d-1) |
0.35 |
T90 for coliforms (h) |
12 |
Critical stress for deposition (N.m-2) |
0.1 |
Critical stress for erosion (N.m-2) |
0.3 |
Mud settling velocity (m.s-1) |
0.001 |
Algae settling velocity (m.s-1) |
0.00001 |
Detritus settling velocity (m.s-1) |
0.001 |
Table 10.8 : Timing of analysis tides within tidal sequences
Season |
Tide |
Tide start time (days from start of simulation) |
||
Previous studies |
CRIII - From start of previous studies |
From start of CRIII |
||
Dry |
Spring |
5.00 |
30.79 |
20.37 |
Neap |
9.38 |
24.92 |
14.50 |
|
Wet |
Spring |
5.00 |
32.88 |
19.63 |
Neap |
12.21 |
27.00 |
13.75 |
·
Deep outfalls;
·
Rivers and nullahs; and
·
Storm drains.
The pollution loads of the deep outfalls, storm drains, rivers and nullahs are listed in Table 10.9. Near Central, the more detailed distribution of loadings shown in Tables 10.10 and 10.11 was used.
Table 10.9 : Discharges and pollutant loads of the outfalls and stormdrains assumed in the modelling, excluding pollutant sources near CRIII
Location
name |
Volume
m3/day |
SS kg/day |
BOD5 kg/day |
TKN kg/day |
NH3-N kg/day |
Nitrate Kg/day |
DO kg/ day |
Ecoli counts/ day |
Ortho-P kg/day |
TP kg/ day |
|
Outfalls |
Central |
136633 |
27190.0 |
34294.9 |
4918.8 |
2732.7 |
0.0 |
0.0 |
2.17E+16 |
382.6 |
683.2 |
Cheung Chau |
3753 |
341.5 |
563.0 |
78.8 |
75.1 |
0.0 |
0.0 |
1.69E+14 |
3.8 |
6.8 |
|
Eastern |
71304 |
14617.3 |
16613.8 |
2852.2 |
1640.0 |
0.0 |
0.0 |
1.35E+16 |
199.7 |
356.5 |
|
Lamma_PS
STW |
216 |
3.5 |
0.6 |
0.1 |
0.1 |
0.0 |
0.0 |
6.91E+06 |
0.0 |
0.0 |
|
Pillar
Point |
129652 |
14132.1 |
22689.1 |
5471.3 |
3422.8 |
0.0 |
0.0 |
1.27E+16 |
132.2 |
236.0 |
|
Sai
Kung |
7580 |
333.5 |
174.3 |
153.1 |
40.2 |
53.1 |
0.0 |
7.58E+10 |
12.3 |
21.8 |
|
Sha
Tau Kok |
2577 |
118.5 |
64.4 |
52.3 |
13.4 |
38.7 |
0.0 |
2.58E+10 |
4.2 |
7.4 |
|
Sham
Tseng |
7230 |
173.5 |
621.8 |
240.8 |
144.6 |
0.0 |
0.0 |
7.23E+07 |
11.6 |
20.8 |
|
Shek
O |
1868 |
358.7 |
381.1 |
74.5 |
43.7 |
0.0 |
0.0 |
3.75E+14 |
5.0 |
9.0 |
|
Shek
Wu Hui |
97717 |
4690.4 |
2540.6 |
2032.5 |
195.4 |
684.0 |
0.0 |
9.77E+11 |
158.3 |
281.4 |
|
Siu
Ho Wan |
113843 |
11270.5 |
19011.8 |
4360.2 |
2732.2 |
0.0 |
0.0 |
1.02E+16 |
113.8 |
207.2 |
|
Sok
Kwu Wan |
116 |
3.5 |
2.3 |
0.2 |
0.1 |
1.6 |
0.0 |
1.16E+09 |
0.2 |
0.3 |
|
Southern |
52000 |
14196.0 |
15288.0 |
2756.0 |
1508.0 |
0.0 |
0.0 |
1.26E+16 |
145.6 |
260.0 |
|
SSDS
Stage 1 |
1123600 |
58427.2 |
128090.4 |
39326.0 |
24719.2 |
0.0 |
0.0 |
1.09E+17 |
1258.4 |
2247.2 |
|
Stanley |
2522 |
95.8 |
50.4 |
45.1 |
11.9 |
20.2 |
0.0 |
2.52E+10 |
4.0 |
7.3 |
|
Tai
Po Sha Tin |
177410 |
5322.3 |
3548.2 |
354.8 |
443.5 |
1596.7 |
0.0 |
8.87E+12 |
283.9 |
510.9 |
|
Urmston
Road |
160976 |
11751.2 |
19317.1 |
4684.4 |
2962.0 |
0.0 |
0.0 |
1.12E+16 |
164.2 |
293.0 |
|
Wanchai |
109500 |
22557.0 |
27484.5 |
4161.0 |
2299.5 |
0.0 |
0.0 |
1.91E+16 |
306.6 |
547.5 |
|
Yung
Shue Wan |
801 |
24.0 |
16.0 |
1.6 |
0.8 |
11.2 |
0.0 |
1.48E+13 |
1.3 |
2.3 |
|
Rivers and Stormdrains |
Angler
River |
2330 |
0.9 |
0.7 |
0.2 |
0.0 |
8.6 |
18.6 |
5.13E+10 |
0.6 |
1.1 |
Central
& Western |
31758 |
6319.8 |
7971.3 |
1143.3 |
635.2 |
0.0 |
158.8 |
5.05E+15 |
88.9 |
158.8 |
|
Cheung Chau |
938 |
205.4 |
219.5 |
41.8 |
24.5 |
0.0 |
4.7 |
2.09E+14 |
1.7 |
3.0 |
|
Eastern
(CW SKW) |
9708 |
2135.8 |
2359.0 |
416.5 |
235.9 |
0.0 |
48.5 |
1.95E+15 |
17.5 |
31.1 |
|
Eastern
(N.Point Q.Bay) |
17826 |
3654.3 |
4153.5 |
713.0 |
410.0 |
0.0 |
89.1 |
3.39E+15 |
49.9 |
89.1 |
|
Fanling
Shek Wu Hui |
20572 |
4916.7 |
5307.6 |
946.3 |
534.9 |
0.0 |
102.9 |
4.42E+15 |
37.0 |
53.5 |
|
Kowloon
City |
17776 |
3946.3 |
4426.2 |
746.6 |
417.7 |
0.0 |
88.9 |
3.41E+15 |
32.0 |
56.9 |
|
Kwai
Chung |
10173 |
3001.0 |
3275.7 |
518.8 |
262.5 |
0.0 |
50.9 |
1.91E+15 |
18.3 |
32.6 |
|
Kwun
Tong |
21909 |
5543.0 |
6156.4 |
1014.4 |
545.5 |
0.0 |
109.5 |
4.27E+15 |
39.4 |
70.1 |
|
Mong
Kok |
7497 |
1596.9 |
1911.7 |
284.9 |
154.4 |
0.0 |
37.5 |
1.21E+15 |
13.5 |
24.0 |
|
Mui
Wo River |
8550 |
77.0 |
14.5 |
3.4 |
0.9 |
2.6 |
68.4 |
2.75E+11 |
0.7 |
1.2 |
|
Sai
Kung |
798 |
174.8 |
184.3 |
35.9 |
20.7 |
0.0 |
4.0 |
1.79E+14 |
1.4 |
2.1 |
|
Sha
Tau Kok |
332 |
76.0 |
82.7 |
14.9 |
8.6 |
0.0 |
1.7 |
7.17E+13 |
0.6 |
0.9 |
Table
10.9: Discharges and pollutant loads of
the outfalls and stormdrains assumed in the modelling, excluding pollutant
sources near CRIII (Cont’d)
Location
name |
Volume
m3/day |
SS kg/day |
BOD5 kg/day |
TKN kg/day |
NH3-N kg/day |
Nitrate Kg/day |
DO kg/ day |
Ecoli counts/ day |
Ortho-P kg/day |
TP kg/ day |
|
|
Sham Shui Po |
13661 |
3524.5 |
3907.0 |
633.9 |
336.1 |
0.0 |
68.3 |
2.60E+15 |
24.6 |
43.7 |
Sham
Tseng |
1320 |
158.4 |
283.8 |
51.7 |
29.3 |
0.0 |
6.6 |
4.32E+07 |
2.4 |
4.2 |
|
Shek
O |
467 |
89.7 |
95.3 |
18.6 |
10.9 |
0.0 |
2.3 |
9.39E+13 |
0.8 |
1.5 |
|
Siu
Ho Wan |
3595 |
794.5 |
884.4 |
153.1 |
86.3 |
0.0 |
18.0 |
7.12E+14 |
6.5 |
11.5 |
|
Sok
Kwu Wan |
12 |
2.6 |
2.8 |
0.5 |
0.3 |
0.0 |
0.1 |
2.68E+12 |
0.0 |
0.0 |
|
Southern |
13001 |
3549.3 |
3822.3 |
689.1 |
377.0 |
0.0 |
65.0 |
3.15E+15 |
36.4 |
65.0 |
|
Stanley |
630 |
121.0 |
128.5 |
25.1 |
14.7 |
0.0 |
3.2 |
1.27E+14 |
1.1 |
2.0 |
|
Stanley
Stream |
2450 |
291.6 |
1.0 |
0.0 |
0.0 |
4.7 |
19.6 |
7.89E+10 |
0.1 |
0.3 |
|
Tai Po Sha Tin |
28141 |
6416.1 |
6922.7 |
1246.6 |
700.7 |
0.0 |
140.7 |
5.80E+15 |
50.7 |
90.1 |
|
Tseung
Kwan O + SENT |
13882 |
2818.0 |
2997.1 |
567.8 |
327.6 |
0.0 |
69.4 |
2.78E+15 |
25.0 |
44.4 |
|
Tsing
Yi |
4012 |
1043.1 |
1119.3 |
203.8 |
114.7 |
0.0 |
20.1 |
9.43E+14 |
7.2 |
12.8 |
|
Tsuen
Wan |
9336 |
2184.6 |
2455.4 |
397.7 |
214.7 |
0.0 |
46.7 |
1.69E+15 |
16.8 |
29.9 |
|
Tuen Mun Mullah |
13648 |
3316.5 |
3521.2 |
641.5 |
354.8 |
0.0 |
68.2 |
2.96E+15 |
24.6 |
22.5 |
|
Urmston
Road |
33721 |
5496.5 |
5968.6 |
1092.6 |
623.8 |
0.0 |
168.6 |
5.23E+15 |
60.7 |
55.6 |
|
Wan
Chai |
12850 |
2647.1 |
3225.4 |
488.3 |
269.9 |
0.0 |
64.3 |
2.24E+15 |
36.0 |
64.3 |
|
Wong
Tai Sin |
11783 |
2592.3 |
2827.9 |
498.4 |
275.7 |
0.0 |
58.9 |
2.13E+15 |
21.2 |
37.7 |
|
Yau
Ma Tei |
8112 |
1687.3 |
2117.2 |
303.4 |
169.5 |
0.0 |
40.6 |
1.31E+15 |
14.6 |
26.0 |
|
Yung Shue Wan |
84 |
18.4 |
19.7 |
3.7 |
2.2 |
0.0 |
0.4 |
1.87E+13 |
0.2 |
0.3 |
* Loadings have been adopted for all
modelling scenarios.
Note: Discharge and Pollutant Load below relate
to the Pearl River Delta
Property |
Unit |
Value |
|
Dry season |
Wet season |
||
Discharge |
m3s-1 |
1,700 |
10,000 |
Slow dissolved BOD5 |
Ppm tonnes/day |
7 Approx. 1,000 |
1.2 Approx. 1,000 |
Ammoniacal nitrogen |
ppm tonnes/day |
1 Approx. 150 |
0.3 Approx. 250 |
Nitrate |
ppm tonnes/day |
5 Approx. 700 |
2 Approx. 1,700 |
Phosphorous |
ppm tonnes/day |
0.1 Approx. 10 |
0.01 Approx. 10 |
Suspended solids |
ppm tonnes/day |
30 Approx. 4,000 |
100 Approx. 85,000 |
DO |
ppm |
8 |
8 |
Table 10.10 : Discharges and Pollutant Loads of the Outfalls and Stormdrains near Central Assumed in the Modelling
Location Name |
Easting |
Northing |
Volume m3/day |
Stormwater outfall K |
835280 |
815815 |
1,521 |
Stormwater outfall I |
834640 |
816025 |
2,143 |
Stormwater outfall J2 |
835015 |
815980 |
2,255 |
Stormwater outfall L |
835440 |
815845 |
1,166 |
Stormwater outfall J1 |
834780 |
815990 |
7,430 |
Stormwater outfall F |
834494 |
816168 |
2,400 |
Table 10.11 : Water quality variable loads for the stormwater outfalls near Central
Location Name |
BOD5 kg/day |
TKN kg/day |
NH3-N kg/day |
E-coli counts/day |
Stormwater outfall K |
28.9 |
4.4 |
4.4 |
6.16E+13 |
Stormwater outfall I |
30.0 |
1.5 |
1.5 |
3.49E+13 |
Stormwater outfall J2 |
7.9 |
29 |
2.9 |
7.67E+12 |
Stormwater outfall L |
304.3 |
17.5 |
17.5 |
7.93E+14 |
Stormwater outfall J1 |
2500.2 |
410.1 |
289.8 |
2.67E+15 |
Stormwater outfall F |
600.0 |
150.0 |
60.0 |
4.80E+14 |
Wet Season
·
A thin layer (approx. 1m) of recent marine
deposit - very soft, black silt/clay with shell fragments and organic matter;
·
A layer of Marine Deposit (from approximately
1m to 4m below the seabed. In some areas, marine deposits were found to be
thicker than 4m below the seabed)- soft, dark greenish grey, sandy silty clay
with occasional shell fragments; and
·
A layer of alluvium (below 4m depth) -
brownish yellow, clayey/silty fine to coarse sand with occasional subangular
fine to medium gravel.
Further extracts from the Sediment Quality Report which indicate the types and results of tests conducted on the samples removed that are applicable to the CRIII Minimum Option Layout are included on the following pages for reference. Detailed information, as appropriate, is provided in Appendix P.
·
Test type 1 comprised:
- Analysis for Chromium (Cr), Cadmium (Cd), Copper (Cu), Mercury (Hg), Nickel (Ni), Zinc (Zn) and Lead (Pb);
- Analysis for dry weight;
- Analysis for total organic carbon content (TOC);
- Analysis for chemical oxygen demand; and
- Analysis for electrochemical potential and conductivity.
·
Test type 2 comprised elutriate tests; and
·
Test type 3 comprised pore water tests.
·
Class A : Uncontaminated material, for which
no special dredging, transport or disposal methods are required beyond those
which would normally be applied for the purpose of ensuring compliance with
EPD's Water Quality Objectives, or for protection of sensitive receptors near
the dredging or disposal areas.
·
Class B : Moderately contaminated material,
which requires special care during dredging and transport, and which must be
disposed of in a manner which minimises the loss of pollutants either into
solution or by re-suspension.
·
Class C : Seriously contaminated material,
which must be dredged and transported with great care, which cannot be dumped
in the gazetted marine disposal grounds and which must be effectively isolated
from the environment upon final disposal.
Table 10.12 : Classification of Sediments by Metal Contents (mg/kg dry weight)
(EPD Technical Circular No. (TC) No. 1-1-92)
Class * |
Cd |
Cr |
Cu |
Ni |
Pb |
Zn |
Hg |
A |
0.0-0.9 |
0-49 |
0-54 |
0-34 |
0-64 |
0-140 |
0.0-0.7 |
B |
1.0-1.4 |
50-79 |
55-64 |
35-39 |
65-74 |
150-190 |
0.8-0.9 |
C |
1.5 or more |
80 or more |
65 or more |
40 or more |
75 or more |
200 or more |
1.0 or more |
* Class A - Uncontaminated;
Class B - Moderately Contaminated;
Class C - Seriously contaminated.
Ct = Cs + (Cs x Kd x SS)
where Cs = concentration of contaminant in water (desorbed)
Kd = partitioning coefficient
SS = suspended sediment concentration
Ct = SS x Csed
Csed = concentration of contaminant in sediment
The values of the partitioning
coefficients for PAHs, PCBs, copper and zinc were derived from previous studies
which assessed the environmental impacts of the disposal of contaminated mud at
East Sha Chau and dredging of an area of Kellet Bank for reprovisioning of six
Government Mooring Bouys. The partitioining
coefficients used in these studies were:
Partitioning Coefficient for Total PAHs 0.075 Lg-1
Partitioning
Coefficient for Total PCBs 1,000
Lg-1
Partitioning
Coefficient for Copper 122
Lg-1
Partitioning
Coefficient for Zinc 100
Lg-1
These partitioning coefficients are considered applicable to the CRIII dredging site as the muds to be dredged from the CRIII site have similar chemical and sediment properties to the sediments for which the coefficients were derived in the earlier studies.
The concentation of PAHs, PCBs, copper and zinc in the sediment was
derived from the sediment quality data collected in late 2000 and presented in
Appendix P. Maximum values included in
the footnotes to Table P3 (in Appendix P) were used in the assessment.
The maximum predicted suspended sediment concentration used in the
assessment is the maximum value pedicted for the CRII sensitive receivers
considered in the Sedplume assessments (refer to Section 10.6 of this EIA
Report). The value adopted is 68.32mgL-1
as taken from Table 10.22. The
resulting desorbed concentration of PAHs, PCBs, copper and zinc in the marine
waters will be:
PAHs : = 0.115µgL-1
PCBs : = 0.0001µgL-1
Copper : = 1.77µgL-1
Zinc : = 3.14µgL-1
The UK Standards that apply to PAHs, PCBs, copper and zinc are 5µgL-1
, 0.014µgL-1, 5µgL-1
and 40µgL-1 respectively.
It can therefore be concluded that there will be no adverse impacts to
the water column from the release of the pollutants.
The Secretary of the Marine Fill Committee has confirmed that he has no objection to the proposal to remove 580,000m3 (i.e. total removal) of all soft seabed deposits from below the CRIII site. Nonetheless, an assessment has been conducted to determine the potential for contaminant release associated with any small amounts of muds left in place. In this situation contaminants contained in pore water could be forced out during subsequent reclamation works. However, in view of the very low levels of contaminant present in the pore water from the tests conducted in the Sediment Quality Study and the dilution effect due to the receiving waters (refer also to section 10.5.7.1), it is considered that the impact on the receiving waters would be minimal. Heavy metals such as mercury, cadmium and copper are relatively strongly bound to the clay fraction and organic material in the sediments and thus do not readily enter the sediment pore water. The recorded TOC contents of 0.2% - 9.1% represent a high amount of organic matter in the bottom sediment of Victoria Harbour. This organic matter plays an important role in binding of trace metals and organic micro-pollutants through sorption and / or complexation. Thus the high recorded TOC content would indicate that pollutants in the sampled bottom sediments are likely to be less available to enter the sediment pore water. Thus, it is considered that expelled pore water contamination would not be a concern for only small amounts of muds left in place.
Table 10.13 : Physical parameter values used for the suspended sediment plume simulations
Parameter |
Value/Equation |
Settling velocity (m.s-1) |
Maximum(Bcn,wsmin) (c = suspended mud concentration,
kg.m-3) |
Minimum settling velocity, wsmin
(m.s-1) |
0.001 |
Settling velocity factor, B |
0.01 |
Settling velocity power, n |
1.0 |
Critical shear stress for deposition
(N.m-2) |
0.10 |
Critical shear stress for erosion
(N.m-2) |
0.11 |
Erosion constant (kg.N-1.s-1) |
0.0007 |
Table 10.14 : Dredging and Filling Schedules
ITem |
Description |
Total volume (TV) (m3) |
Factored Volume (TV*1.5)m3 |
Number of weeks |
Hourly rate(1)/ daily rate (2) |
Plant |
1 |
Dredge Initial West |
100,000 |
150,000 |
16 |
98(1) |
1 x 8m3 |
2 |
Fill Initial West |
250,000 |
375,000 |
14 |
4,464(2) |
1x750m3 |
3 |
Dredge Initial East |
180,000 |
270,000 |
16 |
176(1) |
2x8m3 |
4 |
Fill Initial East |
780,000 |
1,170,000 |
16 |
12,188(2) |
1x1,000m3 |
5 |
Dredge Final West |
200,000 |
300,000 |
17 |
184(1) |
2x8m3 |
6 |
Fill Final West (above EOT/Road P2) (3) |
425,000 |
637,500 |
7 |
15,179(2) |
1x1,000m3 |
7 |
Dredge Final East |
100,000 |
150,000 |
16 |
98(1) |
1x8m3 |
8 |
Fill Final East |
780,000 |
1,170,000 |
11 |
17,727(2) |
1x1,000m3 |
Notes (1) Hourly rate for dredging (m3/hour)
(2) Daily rates for filling (m3/day)
(3) Surplus
soft fill in Final Reclamation Area West will be placed behind completed
seawalls in an enclosed area and therefore has not been considered in this
water quality assessment.
·
Yau Tong Bay Reclamation April 2001 – September 2004
·
TKO Additional Reclamation April 2004 – June 2004
At that time, no information was available in respect of the Wan Chai Development Phase II (WDII) project. The Feasibility Study for that project only commenced in mid 1999. Cumulative assessments for the combined reclamation activities for the CRIII and WDII projects may be found in the EIA Study Report for the WDII project but are also reproduced in Appendix Q for reference.
It should be noted that at the time the information was obtained the construction programme for CRIII was December 2000 – December 2004. The consultants for the projects listed above were consulted and their reclamation programmes assessed to determine if concurrent reclamation works would occur. This work revealed that only the Yau Tong Bay project would have concurrent reclamation construction activities. Information on the dredging for the reclamation in Yau Tong Bay was taken from the Draft EIA Report for the Reclamation at Yau Tong Bay (YTB), extracts from which were provided by Maunsell Environmental Management Consultants Ltd. The YTB reclamation will take place between August 2001 and September 2004. Only the filling activity for the Phase 1 reclamation was modelled for this study. In order to provide conservative results, it was assumed that filling will take place before the YTB sea wall has been constructed. In practice, the seawall will be constructed with a 50m gap, with barges bulk filling by bottom dumping behind the near-complete seawall. The dry density of the filling sand for the YTB reclamation was taken to be 1,835kg.m-3.
Table 10.15 :
Sediment release for the two scenarios
Scenario |
Description |
Hourly (2) |
Plant |
Dump |
Fines |
Maximum |
1 |
Fill Initial East |
12,200(2) |
1x1,000m3 |
1.3 |
13.33(3) |
23.33 |
Fill Initial West |
4,500(2) |
1x750m3 |
2.7 |
10.00(3) |
||
Yau Tong |
-- |
-- |
- |
18.86 |
18.86 |
|
2 |
Dredge Final East |
100(1) |
1x8m3 |
- |
1.86 |
15.19 |
Fill Final East |
17,800(2) |
1 x 1,000m3 |
0.9 |
13.33(3) |
||
Yau Tong |
-- |
-- |
- |
18.86 |
18.86 |
Notes (1) Hourly rate for dredging (m3/hour)
(2) Daily
rates for filling (m3/day)
(3) Calculated
by assuming that the barge containing the fill releases its load over a period
of 5 minutes. 5% of the sand fill is
composed of fines and 5% of these fines are lost to the entire water column. The dry density of the sand fill is
1,600kg/m3.
Detailed sediment dispersion modelling works conducted as part of these studies examined both “far field” impacts on sensitive receivers outside Victoria Harbour using tides with larger tidal excursions and “near field” impacts (particularly at the numerous seawater intakes located in the Central and Wan Chai Districts of Hong Kong Island) using tides with smaller tidal excursions. The key findings of both study works were essentially the same and may be summarised as below.
Far field Impacts: Sediment plumes generated by dredging and filling activities distant from the existing shoreline (in areas of water flow with significant magnitude) can extend some distance from the site both to the east and west. The magnitudes of SS elevations, however, decrease rapidly with distance from the site and only negligible SS elevations only are predicted outside the confines of the inner Victoria Harbour.
In previous water quality model studies for the project site conducted in 1996/1997, the sediment plume model, SedPlume, which formed part of the WAHMO suite of coastal hydraulic and water quality models was used to simulate various dredging and filling scenarios. Two scenarios modelled considered dredging and filling activities at the extreme boundaries of the CRIII Minimum Option project site and thus in areas of strong current flows. These two modelled scenarios used the dry season spring tide as it was assessed that this tide, which has the largest tidal excursion, would give the largest area impacted by elevated suspended sediment concentrations. Full details of the two scenarios modelled and results are provided in Appendix R of this report.
The results show that for the scenarios modelled with spring tides (maximising far field impacts), sediment plumes can extend some distance from the project site. The plumes, however, remain within the confines of the inner Victoria Harbour and do not extend as far as Green Island to the west where the ecological conditions are not as degraded as for the remainder of the inner harbour.
In the Wan Chai Development Phase II water quality modelling works, the furthest sensitive receivers from the site were at Kennedy Town (to the west) and Siu Sai Wan (to the east). The maximum suspended solids levels (unmitigated) predicted at Kennedy Town and Siu Sai Wan in the dry season were 11.3mgl-1 and 8.3mgl-1 respectively. These values compare to the maximum values predicted at sensitive receivers along the Wan Chai waterfront of 255.3mgl-1. Similar phenoma are predicted for the wet season with maximum suspended solids levels of 6.6mgl-1 and 13.8mgl-1 predicted at Kennedy Town and Siu Sai Wan respectively compared to 262.8mgl-1 along the Wan Chai waterfront. The magnitudes of these SS elevations distant from the site are expected to be able to meet the respective intake criteron after mitigation. The most significant SS elevations are found close to the site potentially affecting the numerous seawater intakes located in the Central and Wan Chai Districts of Hong Kong Island.
Near Field Impacts : Sediment plumes generated by dredging and filling activities near to the existing shoreline (in areas of water flow of low magnitude) can also extend some distance from the site particularly to the west on the flood tide. The sediment plumes, which were produced under more conservative fines loss rates, generally remain within the confines of the inner Victoria Harbour. The magnitudes of these SS elevations are found to be similar to those predicted for the “far field” impact simulations.
As would be expected, the “near field” impact simulations predict maximum SS elevations close to site. The magnitudes of the SS elevations are, however, larger than for the “far field” impact simulations principally due to the following reasons :
·
The sediment sources are located much closer
to the shoreline (and seawater intakes); and
·
The sediment sources are located in areas of
water flow with low magnitude.
Such high SS elevations will affect the numerous seawater intakes located in the Central and Wan Chai Districts of Hong Kong.
The sequence of dredging and filling works for the Minimum Option reclamation will also be carried out largely behind completed seawalls due to the configuration of the completed reclamation. The sequence of the reclamation will require that the reclamation platform be formed from a number of small reclamations (refer to Figures 4.1 and 4.2 in Chapter 4 of this EIA Report). As a consequence, the majority of dredging and filling works will be carried out in areas of water flow of low magnitude (refer to Baseline plots in Appendix O). Even the dredging and filling works at the limits of the reclamation will be in areas of relatively low water flow with the most exposed area being close to the existing Ferry Pier 7 at the north west corner of the reclamation.
Taking account of the findings of previous studies for the project site (refer to Appendix R), the Wan Chai Development Phase II water quality modelling works (refer to paragraph 10.6.2.2.9) and the manner in which the reclamation will be constructed, it was determined that priority should be given to considering the impacts on seawater intakes located within the site and the areas immediately adjacent to the site where SS elevations would be maximum. Tide types which would be associated with short tidal excursions were therefore adopted.
Scenario 1 (Filling)
The predicted maximum SS levels at sensitive receivers (both cooling water intakes and WSD intakes) are observed to be, in both modelled cases, substantially below the specified Water Quality Objectives (refer to section 3.6). Given that the modelling input utilised dredging and filling rates based upon the construction programme presented in Appendix C, it is worth noting that significant increases in these rates would produce SS levels at all sensitive receivers that still comply with the WQOs. This observation was obviously only possible upon completion of modelling at which time the input data could not be amended. It is, however, particularly relevant to the preparation of the Environmental Permit for the project.
Dissolved Oxygen Depletion
DOdep = C x COD x 0.001
where
DOdep = reduction in dissolved oxygen level in mgl-1
C = tidal average suspended sediment
concentration in kg m-3
COD = chemical oxygen demand in mg-O kg-1 sediment
The value of COD is taken from Table D16 of Appendix D of the publication - “Marine Water Quality in Hong Kong in 1997” as no site specific data is available. The value adopted is that for station VS5 (the closest station to the CRIII site) and is the maximum recorded value of 25,000 mg kg-1.
Tables 10.16 – 10.20 and Tables 10.21 – 10.25 for Scenarios 1 and 2 respectively indicate that the maximum tide – averaged suspended mud concentration at any of the relevant sensitive receivers (cooling water intakes are not relevant sensitive receivers) resulting from the simulated dredging / filling from the CRIII works is 0.09 mgl-1 (at the WSD Wan Chai Intake in Scenario 2). The values quoted in these tables are elevations above ambient (“background”) and do not include the ambient concentration. Consequently the maximum dissolved oxygen depletion associated with the reclamation works for CRIII can be estimated to be 0.00225 mgl-1. This decrease of the dissolved oxygen is small when compared to the Baseline valves (refer to paragraph 10.4.5.2.4 and therefore will not impact the dissolved oxygen concentration of the water column when compared to the WQO for DO as defined in Table 3.8 and the WSD's DO objective as defined in Table 3.10 (refer to Chapter 3).
Micropollutants
Nutrients
Table 10.16 : Simulated depth-averaged suspended mud concentrations given as elevation above ambient – Scenario 1
Location |
Concentrations
(mg l-1) |
|
Average |
Maximum |
|
Central Intakes |
0.30 |
0.84 |
Central Water
Front |
0.87 |
6.28 |
Cha Kwo Ling |
2.70 |
14.97 |
Cheung Sha Wan
WSD Intake |
0.00 |
0.00 |
Green Island East |
0.00 |
0.00 |
Green Island
North |
0.00 |
0.19 |
Green Island
South |
0.00 |
0.11 |
Green Island West |
0.02 |
0.30 |
Hotel Furama
Intakes |
0.41 |
1.92 |
HSBC Intake |
0.47 |
2.16 |
Kau Yi Chau
Fishery |
0.00 |
0.00 |
Kennedy Town WSD
intake |
0.00 |
0.00 |
MTRC Intake |
0.00 |
0.00 |
MTRC South Intake |
0.21 |
4.69 |
Central Barracks
Intake |
4.95 |
32.56 |
Prince's Building
Group |
0.78 |
3.64 |
Quarry Bay |
0.04 |
0.56 |
Queen Mary
Hospital Intake |
0.00 |
0.00 |
Queen's Piers 6
& 7 |
0.93 |
4.30 |
Queensway
Government Offices |
0.64 |
5.25 |
Sai Wai Ho |
0.01 |
0.32 |
Stage 1 Phase 1
Intake |
0.00 |
0.00 |
Tai Wan |
0.00 |
0.00 |
Wah Fu Estate
Intake |
0.00 |
0.00 |
Wan Chai Intakes |
0.34 |
2.57 |
Wan Chai WSD
Intake |
0.01 |
0.16 |
Western Intake
(Central) |
0.60 |
2.72 |
Western Intake
(East) |
0.41 |
1.39 |
Western Intake
(West) |
0.00 |
0.00 |
Yau Ma Tei WSD Intake |
0.35 |
3.47 |
Yau Tong |
1.21 |
9.01 |
Table 10.17 : Simulated suspended mud concentrations given as elevation above ambient in the bed layer – Scenario 1
Location |
Concentrations
(mg l-1) |
|
Average |
Maximum |
|
Central Intakes |
0.77 |
2.81 |
Central Water Front |
1.50 |
15.65 |
Cha Kwo Ling |
5.21 |
31.74 |
Cheung Sha Wan WSD Intake |
0.00 |
0.00 |
Green Island East |
0.00 |
0.00 |
Green Island North |
0.01 |
0.75 |
Green Island South |
0.02 |
0.44 |
Green Island West |
0.06 |
1.18 |
Hotel Furama Intakes |
1.13 |
6.93 |
HSBC Intake |
0.98 |
4.52 |
Kau Yi Chau Fishery |
0.00 |
0.00 |
Kennedy Town WSD intake |
0.00 |
0.00 |
MTRC Intake |
0.00 |
0.00 |
MTRC South Intake |
0.40 |
5.64 |
Central Barracks Intake |
6.80 |
37.66 |
Prince's Building Group |
1.00 |
6.74 |
Quarry Bay |
0.12 |
2.23 |
Queen Mary Hospital Intake |
0.00 |
0.00 |
Queen's Piers 6 & 7 |
1.54 |
6.95 |
Queensway Government Offices |
1.07 |
13.91 |
Sai Wai Ho |
0.03 |
0.59 |
Stage 1 Phase 1 Intake |
0.00 |
0.00 |
Tai Wan |
0.00 |
0.00 |
Wah Fu Estate Intake |
0.00 |
0.00 |
Wan Chai Intakes |
0.58 |
9.11 |
Wan Chai WSD Intake |
0.04 |
0.66 |
Western Intake (Central) |
1.72 |
7.43 |
Western Intake (East) |
0.78 |
3.61 |
Western Intake (West) |
0.00 |
0.00 |
Yau Ma Tei WSD Intake |
1.11 |
13.89 |
Yau Tong |
2.84 |
23.95 |
Table 10.18 : Simulated suspended mud concentrations given as elevation above ambient below mid-depth : Scenario 1
Location |
Concentrations
(mg l-1) |
|
Average |
Maximum |
|
Central Intakes |
0.29 |
1.73 |
Central Water Front |
0.98 |
11.85 |
Cha Kwo Ling |
4.08 |
37.04 |
Cheung Sha Wan WSD Intake |
0.00 |
0.00 |
Green Island East |
0.00 |
0.00 |
Green Island North |
0.00 |
0.00 |
Green Island South |
0.00 |
0.00 |
Green Island West |
0.01 |
0.40 |
Hotel Furama Intakes |
0.47 |
2.18 |
HSBC Intake |
0.65 |
4.85 |
Kau Yi Chau Fishery |
0.00 |
0.00 |
Kennedy Town WSD intake |
0.00 |
0.00 |
MTRC Intake |
0.00 |
0.00 |
MTRC South Intake |
0.39 |
14.13 |
Central Barracks Intake |
6.02 |
43.26 |
Prince's Building Group |
1.03 |
5.89 |
Quarry Bay |
0.02 |
0.54 |
Queen Mary Hospital Intake |
0.00 |
0.00 |
Queen's Piers 6 & 7 |
0.77 |
2.76 |
Queensway Government Offices |
0.93 |
15.99 |
Sai Wai Ho |
0.02 |
0.59 |
Stage 1 Phase 1 Intake |
0.00 |
0.00 |
Tai Wan |
0.00 |
0.00 |
Wah Fu Estate Intake |
0.00 |
0.00 |
Wan Chai Intakes |
0.42 |
6.92 |
Wan Chai WSD Intake |
0.01 |
0.39 |
Western Intake (Central) |
0.60 |
4.32 |
Western Intake (East) |
0.45 |
2.79 |
Western Intake (West) |
0.00 |
0.00 |
Yau Ma Tei WSD Intake |
0.23 |
3.41 |
Yau Tong |
1.81 |
18.26 |
Table 10.19 : Simulated suspended mud concentrations given as elevation above ambient above mid-depth : Scenario 1
Location |
Concentrations
(mg l-1) |
|
Average |
Maximum |
|
Central Intakes |
0.07 |
0.90 |
Central Water Front |
0.89 |
11.46 |
Cha Kwo Ling |
1.45 |
14.54 |
Cheung Sha Wan WSD Intake |
0.00 |
0.00 |
Green Island East |
0.00 |
0.00 |
Green Island North |
0.00 |
0.00 |
Green Island South |
0.00 |
0.00 |
Green Island West |
0.00 |
0.00 |
Hotel Furama Intakes |
0.05 |
1.70 |
HSBC Intake |
0.24 |
4.30 |
Kau Yi Chau Fishery |
0.00 |
0.00 |
Kennedy Town WSD intake |
0.00 |
0.00 |
MTRC Intake |
0.00 |
0.00 |
MTRC South Intake |
0.06 |
2.39 |
Central Barracks Intake |
4.90 |
39.87 |
Prince's Building Group |
0.88 |
6.82 |
Quarry Bay |
0.02 |
0.55 |
Queen Mary Hospital Intake |
0.00 |
0.00 |
Queen's Piers 6 & 7 |
0.82 |
10.61 |
Queensway Government Offices |
0.57 |
10.73 |
Sai Wai Ho |
0.01 |
0.59 |
Stage 1 Phase 1 Intake |
0.00 |
0.00 |
Tai Wan |
0.00 |
0.00 |
Wah Fu Estate Intake |
0.00 |
0.00 |
Wan Chai Intakes |
0.35 |
4.12 |
Wan Chai WSD Intake |
0.01 |
0.41 |
Western Intake (Central) |
0.09 |
1.54 |
Western Intake (East) |
0.29 |
2.99 |
Western Intake (West) |
0.00 |
0.00 |
Yau Ma Tei WSD Intake |
0.04 |
1.75 |
Yau Tong |
0.17 |
1.88 |
Table 10.20 : Simulated suspended mud concentrations given as elevation above ambient in the surface layer, Scenario 1
Location |
Concentrations
(mg l-1) |
|
Average |
Maximum |
|
Central Intakes |
0.05 |
1.72 |
Central Water Front |
0.11 |
1.37 |
Cha Kwo Ling |
0.06 |
0.40 |
Cheung Sha Wan WSD Intake |
0.00 |
0.00 |
Green Island East |
0.00 |
0.00 |
Green Island North |
0.00 |
0.00 |
Green Island South |
0.00 |
0.00 |
Green Island West |
0.00 |
0.00 |
Hotel Furama Intakes |
0.00 |
0.00 |
HSBC Intake |
0.00 |
0.15 |
Kau Yi Chau Fishery |
0.00 |
0.00 |
Kennedy Town WSD intake |
0.00 |
0.00 |
MTRC Intake |
0.00 |
0.00 |
MTRC South Intake |
0.00 |
0.00 |
Central Barracks Intake |
2.07 |
33.68 |
Prince's Building Group |
0.19 |
1.88 |
Quarry Bay |
0.00 |
0.00 |
Queen Mary Hospital Intake |
0.00 |
0.00 |
Queen's Piers 6 & 7 |
0.60 |
3.95 |
Queensway Government Offices |
0.00 |
0.14 |
Sai Wai Ho |
0.00 |
0.00 |
Stage 1 Phase 1 Intake |
0.00 |
0.00 |
Tai Wan |
0.00 |
0.00 |
Wah Fu Estate Intake |
0.00 |
0.00 |
Wan Chai Intakes |
0.00 |
0.20 |
Wan Chai WSD Intake |
0.00 |
0.00 |
Western Intake (Central) |
0.00 |
0.00 |
Western Intake (East) |
0.10 |
1.58 |
Western Intake (West) |
0.00 |
0.00 |
Yau Ma Tei WSD Intake |
0.00 |
0.00 |
Yau Tong |
0.00 |
0.00 |
Table 10.21 : Simulated depth-averaged suspended mud concentrations given as elevation above ambient - Scenario 2
Concentrations (mg l-1) |
||
Average |
Maximum |
|
Central Intakes |
0.13 |
0.68 |
Central Water Front |
0.93 |
7.21 |
Cha Kwo Ling |
2.57 |
32.77 |
Cheung Sha Wan WSD Intake |
0.00 |
0.00 |
Green Island East |
0.00 |
0.00 |
Green Island North |
0.00 |
0.00 |
Green Island South |
0.00 |
0.00 |
Green Island West |
0.00 |
0.00 |
HSBC/Hotel Furama Intake |
4.10 |
30.93 |
Kau Yi Chau Fishery |
0.00 |
0.00 |
Kennedy Town WSD intake |
0.00 |
0.00 |
MTRC Intake |
0.00 |
0.00 |
MTRC South Intake |
3.91 |
30.39 |
Prince's Building Group |
1.35 |
9.11 |
Quarry Bay |
0.56 |
3.04 |
Queen Mary Hospital Intake |
0.00 |
0.00 |
Queen's Piers 6 & 7 |
1.11 |
9.11 |
Queensway Government Offices |
5.34 |
41.24 |
Sai Wai Ho |
0.48 |
5.32 |
Stage 1 Phase 1 Intake |
0.00 |
0.00 |
Tai Wan |
0.00 |
0.00 |
Wah Fu Estate Intake |
0.00 |
0.00 |
Wan Chai Intakes |
1.41 |
15.13 |
Wan Chai WSD Intake |
0.06 |
0.66 |
Western Intake (Central) |
0.24 |
1.84 |
Western Intake (East) |
0.22 |
1.73 |
Western Intake (West) |
0.00 |
0.00 |
Yau Ma Tei WSD
Intake |
0.18 |
3.29 |
Yau Tong |
0.49 |
5.47 |
Table 10.22 : Simulated suspended mud concentrations given as elevation above ambient in the bed layer - Scenario 2
Location |
Concentrations (mg l-1) |
|
Average |
Maximum |
|
Central
Intakes |
0.39 |
2.72 |
Central
Water Front |
1.31 |
13.02 |
Cha
Kwo Ling |
6.02 |
66.66 |
Cheung
Sha Wan WSD Intake |
0.00 |
0.00 |
Green
Island East |
0.00 |
0.00 |
Green
Island North |
0.00 |
0.00 |
Green
Island South |
0.00 |
0.00 |
Green
Island West |
0.00 |
0.00 |
HSBC/Hotel
Furama Intake |
3.91 |
40.10 |
Kau Yi
Chau Fishery |
0.00 |
0.00 |
Kennedy
Town WSD intake |
0.00 |
0.00 |
MTRC
Intake |
0.00 |
0.00 |
MTRC
South Intake |
7.68 |
51.19 |
Prince's
Building Group |
3.00 |
21.50 |
Quarry
Bay |
2.22 |
12.17 |
Queen
Mary Hospital Intake |
0.00 |
0.00 |
Queen's
Piers 6 & 7 |
2.48 |
14.39 |
Queensway
Government Offices |
4.99 |
68.32 |
Sai
Wai Ho |
1.80 |
20.11 |
Stage
1 Phase 1 Intake |
0.00 |
0.00 |
Tai
Wan |
0.00 |
0.00 |
Wah Fu
Estate Intake |
0.00 |
0.00 |
Wan
Chai Intakes |
2.20 |
13.63 |
Wan
Chai WSD Intake |
0.05 |
0.95 |
Western
Intake (Central) |
0.57 |
6.69 |
Western
Intake (East) |
0.43 |
5.18 |
Western
Intake (West) |
0.00 |
0.00 |
Yau Ma Tei WSD Intake |
0.72 |
13.15 |
Yau
Tong |
1.01 |
11.75 |
Table 10.23 : Simulated suspended mud concentrations given as elevation above ambient below mid-depth - Scenario 2
Location |
Concentrations (mg l-1) |
|
Average |
Maximum |
|
Central
Intakes |
0.07 |
1.97 |
Central Water Front |
0.87 |
8.36 |
Cha Kwo Ling |
3.45 |
51.88 |
Cheung Sha Wan WSD Intake |
0.00 |
0.00 |
Green Island East |
0.00 |
0.00 |
Green Island North |
0.00 |
0.00 |
Green Island South |
0.00 |
0.00 |
Green Island West |
0.00 |
0.00 |
HSBC/Hotel Furama Intake |
5.84 |
42.70 |
Kau Yi Chau Fishery |
0.00 |
0.00 |
Kennedy Town WSD intake |
0.00 |
0.00 |
MTRC Intake |
0.00 |
0.00 |
MTRC South Intake |
6.33 |
50.52 |
Prince's Building Group |
0.64 |
8.67 |
Quarry Bay |
0.03 |
0.54 |
Queen Mary Hospital Intake |
0.00 |
0.00 |
Queen's Piers 6 & 7 |
0.38 |
7.90 |
Queensway Government Offices |
6.27 |
63.57 |
Sai Wai Ho |
0.12 |
1.23 |
Stage 1 Phase 1 Intake |
0.00 |
0.00 |
Tai Wan |
0.00 |
0.00 |
Wah Fu Estate Intake |
0.00 |
0.00 |
Wan Chai Intakes |
0.50 |
7.01 |
Wan Chai WSD Intake |
0.08 |
2.07 |
Western Intake (Central) |
0.39 |
3.99 |
Western Intake (East) |
0.19 |
4.47 |
Western Intake (West) |
0.00 |
0.00 |
Yau Ma Tei WSD
Intake |
0.00 |
0.00 |
Yau Tong |
0.89 |
15.21 |
Table 10.24 : Simulated suspended mud concentrations given as elevation above ambient above mid-depth - Scenario 2
Location |
Concentrations (mg l-1) |
|
Average |
Maximum |
|
Central Intakes |
0.01 |
0.32 |
Central Water Front |
1.38 |
11.77 |
Cha Kwo Ling |
0.76 |
12.54 |
Cheung Sha Wan WSD Intake |
0.00 |
0.00 |
Green Island East |
0.00 |
0.00 |
Green Island North |
0.00 |
0.00 |
Green Island South |
0.00 |
0.00 |
Green Island West |
0.00 |
0.00 |
HSBC/Hotel Furama Intake |
5.53 |
43.99 |
Kau Yi Chau Fishery |
0.00 |
0.00 |
Kennedy Town WSD intake |
0.00 |
0.00 |
MTRC Intake |
0.00 |
0.00 |
MTRC South Intake |
1.60 |
19.86 |
Prince's Building Group |
1.22 |
9.40 |
Quarry Bay |
0.00 |
0.00 |
Queen Mary Hospital Intake |
0.00 |
0.00 |
Queen's Piers 6 & 7 |
0.96 |
11.21 |
Queensway Government Offices |
7.48 |
48.80 |
Sai Wai Ho |
0.00 |
0.00 |
Stage 1 Phase 1 Intake |
0.00 |
0.00 |
Tai Wan |
0.00 |
0.00 |
Wah Fu Estate Intake |
0.00 |
0.00 |
Wan Chai Intakes |
1.85 |
35.05 |
Wan Chai WSD Intake |
0.09 |
1.50 |
Western Intake (Central) |
0.00 |
0.00 |
Western Intake (East) |
0.25 |
3.20 |
Western Intake (West) |
0.00 |
0.00 |
Yau Ma Tei WSD
Intake |
0.00 |
0.00 |
Yau Tong |
0.08 |
3.11 |
Table 10.25 : Simulated suspended mud concentrations given as elevation above ambient in the surface layer - Scenario 2
Location |
Concentrations (mg l-1) |
|
Average |
Maximum |
|
Central Intakes |
0.07 |
2.19 |
Central Water Front |
0.16 |
3.03 |
Cha Kwo Ling |
0.04 |
0.50 |
Cheung Sha Wan WSD Intake |
0.00 |
0.00 |
Green Island East |
0.00 |
0.00 |
Green Island North |
0.00 |
0.00 |
Green Island South |
0.00 |
0.00 |
Green Island West |
0.00 |
0.00 |
HSBC/Hotel Furama Intake |
1.14 |
11.71 |
Kau Yi Chau Fishery |
0.00 |
0.00 |
Kennedy Town WSD intake |
0.00 |
0.00 |
MTRC Intake |
0.00 |
0.00 |
MTRC South Intake |
0.01 |
0.76 |
Prince's Building Group |
0.54 |
7.08 |
Quarry Bay |
0.00 |
0.00 |
Queen Mary Hospital Intake |
0.00 |
0.00 |
Queen's Piers 6 & 7 |
0.64 |
11.45 |
Queensway Government Offices |
2.61 |
24.37 |
Sai Wai Ho |
0.00 |
0.00 |
Stage 1 Phase 1 Intake |
0.00 |
0.00 |
Tai Wan |
0.00 |
0.00 |
Wah Fu Estate Intake |
0.00 |
0.00 |
Wan Chai Intakes |
1.10 |
25.45 |
Wan Chai WSD Intake |
0.03 |
1.32 |
Western Intake (Central) |
0.00 |
0.00 |
Western Intake (East) |
0.00 |
0.00 |
Western Intake (West) |
0.00 |
0.00 |
Yau Ma Tei WSD
Intake |
0.00 |
0.00 |
Yau Tong |
0.00 |
0.00 |
Table 10.26 : Locations and discharges of the stormwater outfalls near Central during the construction phase
Location Name |
Easting |
Northing |
Volume m3/day |
Stormwater outfall K |
835280 |
815815 |
1,521 |
Stormwater outfall I |
834640 |
816025 |
2,143 |
Stormwater outfall J |
835076 |
816077 |
9,685 |
Stormwater outfall L |
835440 |
815845 |
1,166 |
Stormwater outfall F |
834494 |
816168 |
2,400 |
Table 10.27 : Water quality variable loads for the stormwater outfalls near Central during the construction phase
Location Name |
BOD5 kg/day |
TKN kg/day |
NH3-N kg/day |
E-coli Counts/day |
Stormwater outfall K |
28.9 |
4.4 |
4.4 |
6.16E+13 |
Stormwater outfall I |
30.0 |
1.5 |
1.5 |
3.49E+13 |
Stormwater outfall J |
2508.1 |
413.0 |
292.7 |
2.68E+15 |
Stormwater outfall L |
304.3 |
17.5 |
17.5 |
7.93E+14 |
Stormwater outfall F |
600.0 |
150.0 |
60.0 |
4.80E+14 |
·
the use of closed clamshell (water-tight)
grab dredgers to remove seriously contaminated material such that the amount of
SS and other pollutants released from the marine mud and pore water can be
minimised;
·
the prohibition of stockpiling of any
moderately or seriously contaminated marine sediment, and careful control of
stockpiling of any uncontaminated sediment to prevent runoff, resuspension and
odour nuisances; and
·
the control of dredging and bulk reclamation
filling rates within acceptable limits.
Based upon the construction sequence developed for this study the
maximum dredging and filling rates adopted for Final Reclamation Area East were
:
Maximum
Dredging Rate : 184 m2/hour
Maximum Daily Filling Rate : 17,727 m3/day
(for bulk reclamation filling)
For
details of working rates assumed for other reclamation areas, that are
considered to be less critical, refer to Table 10.14.
These
rates could be included as a mitigation measure on the provision that they are
accompanied by a statement to indicate that they are based upon an assumed
construction method. Should this method
be varied for any reason, re-assessment may be necessary to confirm compliance
with WQOs.
·
all vessels should be sized such that
adequate clearance is maintained between vessels and the sea bed at all states
of the tide to ensure that undue turbidity is not generated by turbulence from
vessel movement or propeller wash;
·
all hopper barges and dredgers should be
fitted with tight fitting seals to their bottom openings to prevent leakage of
material;
·
loading of hopper barges should be controlled
to prevent splashing of dredged or filling material to the surrounding water,
and barges or hoppers should not be filled to a level which will cause the
overflow of materials or polluted water during loading or transportation;
·
the works should cause no visible foam, oil,
grease, scum, litter or other objectionable matter to be present on the water
within the site or dumping grounds;
·
bulk filling should be carried out, where
feasible, behind completed seawall to above high water mark. In general and where physically practical,
filling should not be carried out without the seawall having been substantially
completed for a distance of 100m – 200m ahead of filling; and
·
fill materials should comply with technical
specification requirements and be taken from approved sources only. The maximum fines content of marine sand
should be limited to 5% as assumed in the water quality assessments.
·
transport of contaminated mud (or filling
material) to the marine disposal site (or works site) should, wherever
possible, be by split barge of not less than 750 m3 capacity, well
maintained and capable of rapid opening and discharge at the disposal site;
·
the dredged material should be disposed in
the pit by bottom dumping, at a location within the pit specified by the MFC;
·
discharge should be undertaken rapidly and
the hoppers should then immediately be closed. Material adhering to the sides
of the hopper should not be washed out of the hopper and the hopper should
remain closed until the barge next return to the disposal site;
·
the dumping vessel is not required to station
but will be guided by the site staff managing the disposal facility. The vessel crew should be familiar with such
operational procedures;
·
monitoring of the barge loading to ensure
that loss of material does not take place during transportation; and
·
transport barges or vessels shall be equipped
with automatic self-monitoring devices.
·
Uncontaminated (Class A) and contaminated
(Class B) mud disposal sites include the open sea disposal areas at South
Cheung Chau and East Ninepins, and empty marine borrow pits (for example, North
of Lantau, South Tsing Yi and East Tung Lung Chau)
·
Contaminated (Class C) mud disposal facility
is located at East Sha Chau
·
Hopper barges will be used to transport the
dredged marine sediment to the designated dumping area.
It is noted that the newly issued WBTC 3/2000 has somewhat modified the permitted disposal sites for dredged materials. An assessment of the requirements for the new WBTC has been carried out using the test data collected for the Sediment Quality Study conducted in 1996 and concluded that the above disposal sites would still apply. This assessment will, however, be confirmed by the ongoing Sediment Quality Studies for the CRIII Minimum Option (refer also to paragraph 3.8.6.4).
Table 10.28 : Predicted SS Levels for Cumulative Scenario at the Seawater Intakes after the Implementation of Mitigation Measures
Sensitive Receiver |
SS concentration (absolute value) in surface layer (mg L-1) |
||
|
|
Dry season |
Wet season |
|
Criterion |
Maximum (1) |
Maximum (1) |
Cooling Water Intakes |
|
|
|
Windsor House |
- |
5.3 |
25.4 |
Excelsior Hotel & World Trade Centre |
- |
4.3 |
7.3 |
Sun Hung Kai Centre |
- |
11.6 |
10.3 |
Great Eagle Centre / China Resources Building |
- |
8.7 |
8.0 |
Wan Chai Tower / Revenue Tower / Immigration Tower |
- |
8.7 |
8.0 |
Hong Kong Convention and Exhibition Centre Phase I |
- |
28.3 |
7.1 |
Hong Kong Convention and Exhibition Centre
Extension |
- |
6.2 |
6.6 |
Telecom House / HK Academy for Performing Arts / Shun On Centre |
- |
15.1 |
9.5 |
MTRC South Intake |
< 40 |
15.1 |
9.5 |
Prince's Building Group at CRIII |
- |
6.7 |
4.9 |
Queensway Government Offices at CRIII |
- |
20.1 |
28.0 |
Admiralty Centre at CRIII |
< 40 |
20.1 |
28.0 |
HSBC & Hotel Furama at CRIII |
- |
5.0 |
15.8 |
WSD Saltwater Intakes |
|
|
|
Wan Chai |
< 10 |
6.1 |
4.9 |
Central Water Front |
< 10 |
4.3 |
7.0 |
Sheung Wan |
< 10 |
4.5 |
6.0 |
Quarry Bay (2) |
< 10 |
4.3 |
7.0 |
Kennedy Town |
< 10 |
3.7 |
2.4 |
Sai Wan Ho |
< 10 |
3.6 |
8.1 |
Notes:
(1) Absolute value of SS includes the ambient SS level (7.5 mg L-1
for dry season and 5.8 mg L-1 for wet season) in the surface layer
of water column.
(2) As the invert level of the intake is located at the second top
layer of the water column, the SS levels at the second top layer are quoted.
·
deployment of silt curtains around the
dredging and fill release points to contain SS within the construction site
during dredging and filling;
·
deployment of silt screens at the cooling
water intakes and WSD salt water intakes to further minimise the intake of SS
within the sea water.
It is therefore concluded that should the CRIII and WDII dredging and filling works be occuring simultaneously that these measures should be applied by the CRIII contractor.
·
run-off and erosion from site surfaces,
drainage channels, earthworks or stockpiles;
·
bentonite slurries and other grouting
materials;
·
concrete production washout and drainage from
dust suppression sprays; and
·
fuel, oil and lubricants from construction
equipment.
The potential impacts of the different construction methods are discussed below:
·
Cut and Cover Tunnels (CWB, EOT and NIL
Protection Works)
This construction method requires an open site for the majority of the construction period. During this period, run-off containing high levels of silt or SS may be generated by heavy rainfall, and may also be contaminated by grout. As described above, these inputs into marine waters or drainage facilities would have a detrimental effect upon water quality and would consequently require the implementation of suitable mitigation measures. The construction of diaphragm walls will require the use of bentonite. It is strongly recommended that construction uses a method whereby the spoil is cut from the wall excavation and pumped to the surface. The spoil/bentonite mixture is then separated in a sealed system with the bentonite being re-circulated and the spoil loaded on to trucks for disposal. The alternative option of using a grab could lead to bentonite reaching the drainage system.
·
Excavation and Demolition Material Storage
and Handling
Construction will generate a large quantity of material, some of which may be stored on site prior to use as backfilling material. The cut and cover method has the potential to cause the greatest impact. Appropriate measures are therefore required to ensure that run-off from any stockpiling activity is reduced to acceptable levels.
·
Ventilation Shaft Construction
The construction of ventilation shaft facilities may require the use of grout, which as described above, has the potential to affect marine water quality. Suitable mitigation measures would reduce this impact to a negligible level.
ProPECC PN 1/94 recommends various site practices which should be followed, where applicable, to mitigate against water quality deterioration. Relevant measures are summarised below:
·
Control of Site Surface Runoff:
- Surface run-off from construction sites should be discharged into storm drains via adequately designed sand/silt removal facilities such as sand traps, silt traps and sediment basins. Channels or earth bunds or sand bag barriers should be provided on site to properly direct stormwater to such silt removal facilities. Perimeter channels at site boundaries should be provided where necessary. Catchpits and perimeter channels should be constructed in advance of site formation works and earthworks.
- Silt removal facilities, channels and manholes should be maintained.
- Construction works should be programmed to minimise soil excavation works in rainy seasons (April to September). If excavation in soil cannot be avoided, temporarily exposed slope surfaces should be covered and temporary access roads should be protected by crushed stone or gravel, as excavation proceeds. Intercepting channels should be provided.
- Earthworks final surfaces should be well compacted and the subsequent permanent work or surface protection should be carried out immediately after the final surfaces are formed to prevent erosion caused by rainstorms. Appropriate drainage such as intercepting channels should be provided where necessary.
- Measures should be taken to minimise the ingress of rainwater into trenches. If excavation of trenches in wet seasons is necessary, they should be dug and backfilled in short sections. Rainwater pumped out from trenches or foundation excavations should be discharged into storm drains via silt removal facilities.
- Open stockpiles of construction materials should be covered.
- Manholes should be adequately covered and temporarily sealed.
·
Groundwater
- Groundwater pumped out of tunnels or caverns should be discharged into storm drains after the removal of silt.
·
Boring and Drilling Water
- Water used in ground boring and drilling for site investigation or rock/soil anchoring should as far as practicable be recirculated after sedimentation. Wastewater should be discharged into storm drains via silt removal facilities.
·
Wastewater from Concrete Batching and Precast
Concrete Casting
- Wastewater generated from the washing down of mixer trucks and drum mixers and similar equipment should wherever practicable be recycled. The discharge of wastewater should be kept to a minimum.
- To prevent pollution from wastewater overflow, the pump sump of any water recycling system should be provided with an on-line standby pump of adequate capacity and with automatic alternating devices.
- Under normal circumstances, surplus wastewater may be discharged into foul sewers after treatment in silt removal and pH adjustment facilities (to within the pH range of 6 to 10). Disposal of wastewater into storm drains will require more elaborate treatment. Surface run-off should be segregated from the concrete mixing and casting yard area as much as possible, and diverted to the stormwater drainage system. Surface run-off contaminated by materials in a concrete mixing area or casting yard should be adequately treated before disposal into stormwater drains.
·
Wheel Washing Water
- All vehicles and plant should be cleaned before they leave the construction site. A wheel washing bay should be provided at every site exit if practicable and wash-water should have sand and silt settled out or removed before discharging into storm drains. The section of construction road between the wheel washing bay and the public road should be paved with backfall to reduce vehicle tracking of soil and to prevent site run-off from entering public road drains.
·
Bentonite Slurries
- Bentonite slurries should be reconditioned and reused wherever practicable. If the disposal of a certain residual quantity cannot be avoided, the used slurry may be disposed of at the marine spoil site subject to obtaining a marine dumping licence from EPD (on a case-by-case basis).
- If the used bentonite slurry is intended to be disposed of through the public drainage system, it should be treated to the respective effluent standards applicable to foul sewers, storm drains or the receiving waters as set out in the WPCO Technical Memorandum on Effluent Standards.
·
Wastewater from Building Construction
- Before commencing any demolition works, all sewer and drainage connections should be sealed to prevent building debris, soil, sand etc. from entering public sewers/drains.
- Wastewater generated from building construction activities including concreting, plastering, internal decoration, cleaning of works and similar activities should not be discharged into the stormwater drainage system. If the wastewater is to be discharged into foul sewers, it should undergo the removal of settleable solids in a silt removal facility, and pH adjustment as necessary.
·
Wastewater from Site Facilities
- Sewage from toilets, kitchens and similar facilities should be discharged into a foul sewer. Chemical toilets may used as an alternative.
- Wastewater collected from canteen kitchens, including that from basins, sinks and floor drains, should be discharged into foul sewers via grease traps capable of providing at least 20 minutes retention during peak flow.
- Drainage serving an open oil filling point should be connected to storm drains via a petrol interceptor with peak storm bypass.
- Vehicle and plant servicing areas, vehicle wash bays and lubrication bays should as far as possible be located within roofed areas. The drainage in these covered areas should be connected to foul sewers via a petrol interceptor. Oil leakage or spillage should be contained and cleaned up immediately. Waste oil should be collected and stored for recycling or disposal in accordance with the Waste Disposal Ordinance.
·
Licensing of Construction Site Discharges
within Water Control Zones
- All discharges into any drainage or sewerage systems, or inland or coastal waters, or into the ground (e.g. from septic tanks) within a Water Control Zone are controlled under the Water Pollution control Ordinance (WPCO), except the discharge of domestic sewage into foul sewers or the discharge of unpolluted water into storm drains or into the waters of Hong Kong. Construction site discharges are controlled under the WPCO.
- Discharges controlled under the WPCO must comply with the terms and conditions of a valid WPCO licence.
Table
10.29 : Comparison of discharge rates
at Sections to the East & West
of the CRIII Area
Table 10.30 : Locations and discharges of the stormwater outfalls near Central during the operational phase
Location Name |
Easting |
Northing |
Volume m3/day |
Stormwater outfall K |
835450 |
816014 |
1,673 |
Stormwater outfall F |
834905 |
816150 |
6,815 |
Stormwater outfall J |
835076 |
816077 |
10,654 |
Stormwater outfall L |
835440 |
815845 |
1,166 |
Table 10.31 : Water quality variable loads for the stormwater outfalls near Central during the operational phase
Location Name |
BOD5 kg/day |
TKN kg/day |
NH3-N kg/day |
E-coli counts/day |
Stormwater outfall K |
31.8 |
4.8 |
4.8 |
6.78E+13 |
Stormwater outfall F |
945.0 |
227.3 |
92.3 |
7.72E+14 |
Stormwater outfall J |
2758.9 |
454.3 |
322.0 |
2.95E+15 |
Stormwater outfall L |
304.3 |
17.5 |
17.5 |
7.93E+14 |
·
The wet season ebb tide flow speeds in the
Victoria Harbour are higher than that in the dry season. For the flood tide simulations, the flow
speeds are more comparable between the two seasons.
·
The flow speed distributions within the
Victoria Harbour before and after the implementation of the projects up to 2012
are very similar. The reclamation will
only cause slight change in the prevailing currents in the harbour.
·
The predicted mean discharges across the
Victoria Harbour East (Lei Yue Mun) and Victoria Harbour West (Yau Ma Tei -
Western District) will be decreased by less than 5% and 2%, respectively,
during the wet season after the completion of WDII reclamation, as well as othe
rreclamations within the Victoria Harbour, including the CRIII, Kowloon Point
Development, the South East Kowloon Development, the Yau Tong Bay Development
and the Western Coast Road reclamation.
·
The predicted mean discharges across the
Victoria Harbour East (Lei Yue Mun) and Victoria Harbour West (Yau Ma Tei -
Western District) will be decreased by about 4% and less than 1.5%,
respectively during the dry season after the completion of WDII reclamation, as
well as other reclamations within the Victoria Harbour, including the CRIII,
Kowloon Point Development, the South East Kowloon Development, the Yau Tong Bay
Development and the Western Coast Road reclamation.
Therefore, it is concluded that the projects planned will have minimal impact on the hydrodynamic regime of the harbour.
The report further stated that a comparison between the baseline and operational water quality modelling results suggested that the levels of pollutant near Wan Chai and the neighbouring areas are similar under both baseline and operational scenarios. No unacceptable impact associated with the operation of the projects upon the water quality in the Victoria Harbour is envisaged. Based upon the modelling results, operational phase mitigation means are not considered necessary. Operational water quality monitoring and audit is therefore not considered necessary.
·
There will be no significant increase in
thermal discharge produced from CRIII when compared to the existing situation
(refer to paragraphs 10.8.2 and 10.8.4);
·
At the completion of CRIII, the reprovisioned
and new cooling water discharge points will be located at well flushed water,
significantly improving the location of the existing discharge points prior to
CRIII (refer to paragraphs 10.8.2 and 10.8.5); and
·
There will be no significant change in flow
across the major flow channels in the harbour (refer to paragraph 10.7.3).
·
Information obtained indicates that the
existing users will continue to operate their systems as at present (refer to
paragraphs 10.9.2 and 10.9.4);
·
The CRIII project proponent has no influence
over existing pumping station owners who in any case are regulated under the
WPCO to ensure that their discharges are of acceptable quality to protect the
receiving marine water (refer to paragraphs 10.9.2 and 10.9.5);
·
There will be no significant increase in the
use of cooling water for the new reclamation and therefore no significant
additional residual bicoide loads entering Victoria Harbour (refer to paragraph
10.9.6); and
·
The residual biocides upon completion of
CRIII will discharge into well mixed waters of Victoria Harbour where they will
be effectively diluted and dispersed by the strong flow within the main harbour
channel (refer to paragraphs 10.9.7 and 10.9.8).
The assessments included above were prepared at a time when no information was available on the Wan Chai Development Phase II project. Any further impacts of the WDII works on the biocide discharges from CRIII, if any, have been addressed as part of the EIA Study for that project (Reference 8).
·
natural seabed (mud, silts, shell fragments
and stone); and
·
the man-made coastline consisting of
concrete/stone block seawall and reclamation walls, with some wooden piles.
Table 11.1 : Organisms Potentially Present within the Study Area
|
Species |
Algae |
Ulva
congoblata |
|
Enteromorpha
prolifera |
|
Rhizoclonium
riparium |
|
Codium
cyclindricum |
|
Colpomenia
sinuosa |
Hydrozoa |
Haliplanella luciae |
Ascidiacae |
Botrylloides
persipicuum |
|
Botryllus
schlosseri |
|
Ascidia sydneiensis |
|
Ciona intestinalis |
|
Styela plicata |
|
S. canopus |
|
Herdmania
momus |
Bryozoan |
Bugula
neritina |
|
Schizoporella
unicornis |
|
Sinupetraliella
umbonatoidea |
|
Membranipora amoyensis |
|
Conopeum
reticulum |
Barnacle |
Balanus
reticulatus |
|
B. trigonus |
|
B. amphitrite
amphitrite |
|
B. cirratus |
|
B.
albicostatus |
|
Ilba cumingi |
|
Capitulum
mitella |
|
Euraphia
withersi |
|
Chinochthalamus scutelliformis |
|
Tetraclita squamosa |
|
Chirona amaryllis |
Mollusc |
Perna viridis |
|
Septifer bilocularus |
|
Saccostrea cucullata |
|
Martesia striata |
|
Teredo furcifura |
|
T. navalis |
Annelida |
Cirriformia capensis |
|
Eulalia viridis |
|
Halosdyna brevisetosa |
|
Nereis multignatha |
|
Perinereis cultrifera |
|
Marphysa sanguinea |
|
Palola siciliensis |
|
Lumbrinereis sp. |
|
Dorvillea cf pseudorubrovittata |
|
Pherusa parmata |
|
Demonax japonicus |
|
Potamilla torelli |
|
Loimia medusa |
|
Serpula vermicularis |
|
Hydroides dirampha |
|
H. elegans |
* for sources of information refer to Section 11.3.4.
·
Naturalness : Intertidal habitats are
man-made areas and subtidal habitats have been subject to extensive disturbance
through high pollution loads.
·
Size : (not applicable as only meaningful if
the habitats are of some value)
·
Diversity : The faunal diversity in the
intertidal habitats is reported as very low.
Diversity in the subtidal habitats was extremely low.
·
Rarity : No rare species found.
·
Fragmentation : The man-made shore is
surrounded by shores of a similar nature.
·
Ecological Linkage : The present habitats are
not functionally linked to any highly valued habitat in close proximity.
·
Potential Value : Low potential as
significant management efforts or long natural processes would be required for
the site to become an area with conservation interest.
·
Nursery / breeding Ground : No records of
significant nursery / breeding ground within the CRIII Study Area.
·
Age : Young artificial habitats.
·
Abundance / Richness of Wildlife : Both the
intertidal and subtidal shores possibly support few species in very low
abundances.
·
Reduced sunlight penetration, lowered rate of
photosynthesis of phytoplankton (primary productivity) and thus lower rate of
oxygen production in the water column.
Urban development within the Central area resulting from recent reclamations has reduced the number of natural shore-line perching site for birds. The natural habitat for birds are also being continually disturbed by marine traffic. The reclamation area is therefore not considered an important habitat for birds.
Existing cooling water pumping stations will be reprovisioned to the new waterfront as a result of the CRIII works. The impacts of the relocation of these facilities including the impacts of biocide usage for keeping cooling water systems clear of fouling organisations is discussed in Chapter 10. The discussion in Chapter 10 indicates that it is expected that there would be minimal, if any, ecological impact arising from these discharges for the relocated cooling water pumping stations.
·
Habitat Quality : Low quality artificial
habitats.
·
Species : No species of conservation interest
present.
·
Size / Abundance : The reclamation area is 18
hectares but the seabed to be reclaimed has very low ecological value and the
poor intertidal assemblages are likely to recolonise the seawalls post
reclamation.
·
Duration : CR3 reclaimed area will be long
term.
·
Reversibility : Impacts to the seabed are
permanent and irreversible, impacts to the intertidal shore are reversible.
·
Magnitude : Developed into terrestrial and
more urban environment.
Table 13.1 : Heavy Metal Parameters at EPD Stations VS5 and VS6 in Central Victoria Harbour(mg/kg weight)
Station |
Cd |
Cr |
Cu |
Hg |
Ni |
Pb |
Zn |
Sediment*
Classification |
VS5 |
0.1-0.5 |
13-42 |
159-170 |
0.1-0.4 |
6-46 |
19-87 |
45-120 |
H |
VS6 |
0.2-1.0 |
36-92 |
130-360 |
0.3-1.6 |
16-35 |
50-130 |
130-240 |
H |
* Classification according
to "Works Bureau Technical Circular No. 3/2000 - Management of Dredged /
Excavated Sediment" |
·
marine sediments;
·
demolition waste;
·
construction waste;
·
excavated and inert material suitable for
reclamation and fill;
·
chemical waste; and
·
general refuse.
·
Wood from formwork and falsework;
·
Material packaging and equipment wrappings;
·
Unusable / surplus concrete / grouting mixes;
·
Damaged or contaminated surplus construction
materials; and
·
Excavated materials.
·
The quantity of C&D material generated
will be : 12,000m3
·
The quantity of C&D material that can be
re-used on site as public fill will be : 8,000m3;
·
The quantity of C&D material to be
re-used in public filling areas off-site will be : None; and
·
The quantity of C&D material to be
disposed of at landfills (putrescible materials e.g. wood) will be : 4,000m3.
The estimated quantities of C&D materials, in the form of excavated materials, that will be generated, re-used on site or in WDII or in public filling areas are provided in paragraph 13.6.6 above.
·
toxic effects to workers;
·
adverse impacts on water quality from spills
and associated adverse impacts on water sensitive receivers; and
·
fire hazards.
·
excavated material, demolition waste (inert)
and construction waste (inert) suitable for re-use on-site and offsite (public
fill site);
·
demolition and construction waste (non inert)
for landfill;
·
chemical waste; and
·
general refuse (separated and recycled where
possible).
·
inert demolition/construction waste material
when deemed suitable for reclamation or land formation should be re-used
on-site;
·
non-inert demolition / construction waste
material should be disposed of at landfills;
·
chemical waste as defined by Schedule 1 of
the Waste Disposal (Chemical Waste) (General) Regulation, should be stored in
accordance with approved methods defined in the Regulation and Code of Practice
and the chemical waste disposed of at the Chemical Waste Treatment Facility
located at Tsing Yi or an approved recycler;
·
general refuse should be recycled where
possible or disposed of at public landfill.
·
wastes should be handled and stored in a
manner which ensures that they are held securely without loss or leakage
thereby minimising the potential for pollution. Release of these potential
pollutants into marine waters during storage, handling or barge transportation
should not be permitted as introduction of polluted waters is likely to have
detrimental effects on water quality and water sensitive receivers;
·
only reputable waste hauliers authorised to
collect the specific category of waste concerned should be employed;
·
appropriate measures should be employed to
minimise windblown litter and dust during transportation by using enclosed
bins, covering trucks or transporting wastes in enclosed containers;
·
the necessary waste disposal permits and
registrations should be obtained from the appropriate authorities, if they are
required, in accordance with the Waste Disposal Ordinance (Cap 354), Waste
Disposal (Chemical Waste) (General) Regulation (Cap 354) and the Crown Land
Ordinance;
·
collection of general refuse should be
carried out frequently, preferably daily;
·
waste should only be disposed of at licensed
sites and the civil engineering contractor should develop procedures to ensure
that illegal disposal of wastes does not occur;
·
waste storage areas should be well maintained
and cleaned regularly;
·
records should be maintained of the
quantities of wastes generated, recycled and disposed, determined by weighing
each load or other method; and
·
A “trip ticket” system should be implemented,
if required by Government.
·
The Reclamation;
·
Primary and Distributor Roads;
·
Central and Wan Chai Bypass ; and
·
North Island Line Protection Works within
CRIII.
It should be noted that the structural construction works for the Central and Wan Chai Bypass and North Island Line Protection Works are entrusted works to the CRIII project. All other aspects of the operation and remaining construction of these projects will be conducted by others who will be responsible for separate EIA reports for these works.
The landscape and visual impact assessment covers the following:
·
a definition of the scope and contents of the
study;
·
a baseline study describing the existing
landscape and visual character (included as an Appendix to the EIA Study
Report);
·
a review of the relevant planning and
development control framework (included as an Appendix to the EIA Study
Report);
·
impact studies to identify the potential
landscape and visual impacts and predict their magnitude and potential
significance; and
·
recommendations on mitigation measures.
The manner in which the assessments are conducted takes full account of the special nature of the works and the fact that four elements of the works will require Environmental Permits (refer also to paragraph 14.1.1 above).
·
Northern Boundary - views to the north are
dominated by Victoria Harbour and the Kowloon Peninsula. The harbour resource lends the site an open
character which varies according to climate and visibility;
·
Eastern Boundary - the Hong Kong Convention
and Exhibition Centre provides an articulated, generally horizontal, visual
backdrop which contrasts with the vertical linear facades of the Grand Hyatt
Hotel and Central Plaza;
·
Southern Boundary - an ‘urban wall’ of high
rise development along the southern edge of Harcourt Road and Connaught Road
Central provides a robust and multifaceted backdrop to the site. Whilst relatively dense, it still allows
visual permeability to the mountainous backdrop of Victoria Peak; and
·
Western Boundary - the absence of high rise
development north of Jardine House and Exchange Square allows open views across
the CRIII to the Macau Ferry Terminal.
The visual character of this area will change dramatically following
construction of the proposed No. 2 International Finance Centre (IFC) adjacent
to the MTR Hong Kong Station. This
feature will become a dominating element in the district.
For the purposes of discussion, figures and photomontages included in this Chapter, the assumption is made that the Wan Chai Development Phase II Project will be implemented.
·
physical impacts upon Victoria Harbour;
·
loss of temporary parks and vegetation;
·
impacts upon the landscape character of the
waterfront; and
·
impacts upon ‘landmark’ elements (e.g. “Star”
ferry pier and clock tower).
·
loss of views to Victoria Harbour from
development to the east, south and west of the proposed reclamation;
·
loss of southern views to Victoria Peak and
the natural green backdrop from Victoria Harbour and Kowloon Peninsula; and
·
loss of visual relationship between Central-Wanchai
waterfront and Victoria Harbour.
·
View north from the Peak Tower (at grade);
·
View south to Hong Kong Bank from Victoria
Harbour (aerial);
·
View north across Tamar site from Admiralty
Centre;
·
View south west from Expo Drive (at grade)
taken at existing, day 1, and year 10;
·
View south west from Victoria Harbour
(aerial); and
·
View south from “Star” ferry pier Tsim Sha
Tsui (at grade).
·
impacts upon individual landscape features
and resources; and
·
impacts upon landscape character.
Table 14.1 : Landscape Impact Characteristic (Positive or Negative)
|
Sensitivity of Landscape Resource / Character |
|||
Magnitude of Change |
High |
Medium |
Low |
Negligible |
High |
Very Substantial to Substantial |
Substantial to Moderate |
Moderate to Slight |
Negligible |
Moderate |
Substantial to Moderate |
Moderate to Slight |
Slight to Very Slight |
Negligible |
Low |
Moderate to Slight |
Slight to Very Slight |
Very Slight to Negligible |
Negligible |
Negligible |
Negligible |
Negligible |
Negligible |
Negligible |
Residential |
- |
Those people who would
view the scheme from their home |
Occupational |
- |
Those people who would
view the scheme from their workplace |
Travellers |
- |
Those people who would
view the scheme from their vehicles or on foot |
Recreational |
- |
Those people who would
view the scheme whilst engaging in recreational activities |
·
duration of change;
·
degree of change of views; and
·
proximity of receivers.
Table 14.2 : Visual Impact Characteristic (Positive or Negative)
|
Sensitivity of Receiver Group |
|||
Magnitude of Change |
High |
Medium |
Low |
Negligible |
High |
Very Substantial to Substantial |
Substantial to Moderate |
Moderate to Slight |
Negligible |
Moderate |
Substantial to Moderate |
Moderate to Slight |
Slight to Very Slight |
Negligible |
Low |
Moderate to Slight |
Slight to Very Slight |
Very Slight to Negligible |
Negligible |
Negligible |
Negligible |
Negligible |
Negligible |
Negligible |
A review of the various statutory and non statutory controls (including previous Government Studies) pertinent to the CRIII works area which affect landscape and visual impacts is provided in Appendix U.
This review includes information on:
·
Metroplan (October 1999);
·
Central & Wan Chai Reclamation
Development: Development of Urban Design Parameters (DUDPs) – (October 1993);
·
Hong Kong Island West Development Statement;
and
·
The Draft Outline Zoning Plan (No. S/H24/3).
Whilst a small area of Public Transport Facilities will be constructed behind Piers 4 - 7 as aprt of the CRIII works (within the area of the Outline Zoning Plan No. S/H4/9, the facilities essentially and modification of exisitng facilities. The review of this Outline Zoning Plan has essentially not been included in Appnedix U.
According to layouts discussed in the later Sections 14.4 and 14.5 of this chapter, the Designated Projects (DP1-4) conform to the planned use on the relevant OZP and therefore no further action under the Town Planning Ordinance is required.
This Landscape Impact Assessment is concerned with impacts attributable to the 4no. individual Schedule 2 Projects in addition to the Schedule 3 Project. Readers of this Landscape Impact Assessment should familiarise themselves with the Baseline Study – Description of the Environment within the CRIII Works Area – presented in Appendix T.
An assessment of landscape impacts attributable to the overall development, as a Schedule 3 project, is thereafter presented in paragraph14.4.6.
This Landscape Impact Assessment will include assessment of impacts attributable to the reclamation, new sea walls, cooling water pumping stations, ferry piers and public landing steps, as all these items form an integral part of the “reclamation”. The Layout Plan and Section of Designated Project 1 is shown on Figure 14.9.
The sources of construction stage impacts upon landscape character and landscape resources, attributable to the reclamation, will include:
·
the physical process of reclaiming 18ha of
new land in the harbour through importing fill material by barge;
·
the demolition of the existing
"Star" Ferry Pier;
·
the demolition of existing public open space
and landscaped area adjacent to the "Star" Ferry Pier;
·
the construction of temporary and permanent
sea walls and drainage channels;
·
the construction of cooling water pumping
stations;
·
the construction of “Star” ferry piers and
public landing steps. These structures
will comprise 2no. piers per development with the “Star” ferry piers located at
the end of the Statue Square Open Space Corridor and the Public Landing Steps
located at the end of the Historic Corridor. Neither development is indicated
in figures included in this Chapter due to their layout being unconfirmed at
the time of study;
·
temporary site areas for storage, plant,
cabins and associated site equipment; and
·
temporary construction arrangements that affect access to adjacent areas.
·
existence of 18ha of new land in the harbour;
·
existence of new sea walls and cooling water
pumping stations (submerged); and
·
existence of new “Star” ferry piers and
public landing steps.
Construction stage landscape mitigation measures should include:
·
minimising contractors accesses and working
areas as far as possible;
·
sensitively designed site hoarding to reduce
impacts upon landscape character from dredging, filling and the construction of
sea walls;
·
temporary screen planting of shrubs and trees
on mounded land to the periphery of the reclamation where practicable;
·
protection and retention of existing
vegetation where possible in accordance with the Hong Kong Government ‘A Guide
to Tree Planting and Maintenance in Urban Hong Kong, Section 5 ‘Care of Trees
on Development Sites’ and the Country Parks Ordinance;
·
transplanting of trees where appropriate;
·
advance planting;
·
conservation of top soil,if present; and
·
design of the temporary works areas so as to
optimise eventual use as promenade and public open space.
Operation stage landscape mitigation measures should include:
·
temporary screen planting of shrubs and trees
on mounded land to the periphery of the reclamation where practicable and not
implemented during the Construction Stage;
·
sensitive seawall design to enhance the
recreational value of the future promenade;
·
removal of all debris from reclamation and
maintaining that surfaces are even; and
·
hydroseeding of reclamation, as appropriate,
at formed sites awaiting development or areas likely to be unused for a long
period. These areas would be subject to
ongoing irrigation and maintenance to ensure that vegetation cover is
complete. For land pending for
development / construction for more than nine months, hydroseeding should
include a mixture of perennial flowers.
Residual landscape impacts (i.e. impacts which remain after mitigation measures have been implemented) at construction and operation stages for reclamation are indicated in Table 14.3. Conclusions and recommendations for landscape and visual impacts associated with reclamation are indicated in paragraph 14.5.2.9.
Table 14.3 : Residual Landscape Impacts from Reclamation
Landscape Character Zone (1-17) |
Source of Impact |
Type of Impact |
Magnitude of Change at Main Project Stages |
Landscape Sensitivity |
Residual Impact Characteristic during Construction Phase after
Implementation of Mitigation Measures |
Residual Impact Characteristic during Operation Phase after
Implementation of Mitigation Measures |
|
|
|
|
Construction |
Operation |
|
|
|
The Servicemen’s
Guides Association (1) |
Reclamation |
R,C |
High |
High |
Low |
Moderate to Slight Negative |
Moderate to Slight Negative |
Citic Tower (2) |
Reclamation |
C |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Lung Wui Road (3) |
Reclamation |
C |
High |
High |
Low |
Moderate to Slight Negative |
Moderate to Slight Negative |
Tim Mei Avenue and
Tim Wa Avenue (4) |
Reclamation |
C |
High |
Moderate |
Low |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Formar Tamar Basin
(5) |
Reclamation |
C |
High |
Moderate |
Low |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Connaught Road
Central/ Harcourt Road (6) |
Reclamation |
C |
Moderate |
Low |
Low |
Slight to Very Slight Negative |
Very Slight to Negligible
Negative |
Heliport (7) (to be
relocated prior to completion of reclamation) |
Reclamation |
R,C |
High |
N/A |
Low |
Moderate to Slight Negative |
N/A |
Temporary Park
(adjacent to Central Barracks (8) (to be relocated prior to completion of
reclamation) |
Reclamation |
R,C |
High |
N/A |
Medium |
Substantial to Moderate Negative |
N/A |
Central
Barracks (9) |
Reclamation |
C |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Queen’s Pier/
Edinburgh Place (10) (to be relocated prior to completion of reclamation) |
Reclamation & Demolition |
R,C |
High |
N/A |
Low |
Moderate to Slight Negative |
N/A |
City Hall and garden
(11) |
Reclamation & Demolition |
C |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Northern Areas of
Statue Square adjacent to Connaught Rd (12) |
Reclamation & Demolition |
C |
Low |
Negligible |
High |
Moderate to Slight Negligible |
Negligible |
“Star” Ferry Car Park (13) |
Reclamation & Demolition |
C |
High |
Moderate |
Low |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Star Ferry Pier
(14) (to be relocated prior to completion
of reclamation) |
Reclamation & Demolition |
R, C |
High |
N/A |
Medium |
Substantial to Moderate Negative |
N/A |
General Post Office
(15) |
Reclamation & Demolition |
C |
High |
Moderate |
Low |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Eastern Edge of Central
Reclamation Phase I (Man Yiu Street) (16) |
Reclamation & Demolition |
R,C |
High |
High |
Low |
Moderate to Slight Negative |
Moderate to Slight Negative |
18Ha of Victoria
Harbour between Central Reclamation Phase I and the Hong Kong Convention and
Exhibition Centre (17) |
Reclamation |
R |
High |
High |
High |
Very Substantial to Substantial Negative |
Very Substantial to Substantial negative |
18Ha of Victoria
Harbour between Central Reclamation Phase I and the Hong Kong Convention and
Exhibition Centre (17) |
Reclamation |
C |
High |
High |
High |
Very Substantial to Substantial Negative |
Substantial to Moderate Negative |
Key : Type of Impact = R – Impact on Landscape Resources
= C – Impact on Landscape Character
Magnitude
of Impact = Negligible, Low, Moderate or High
Landscape
Sensitivity = Low, Medium or High
Impact
Characteristic = Negligible, Very Slight, Slight,
Moderate, Substantial or Very Substantial (Positive or Negative)
The assessment for primary and district distributor roads will include assessment of impacts attributable to the roads, drainage, utilities and other services associated with the road reserves. The Layout Plan and Section of Designated Project 2 is shown on Figure 14.10.
The sources of construction stage landscape impacts will include:
·
road construction on existing and proposed
reclamation;
·
temporary construction arrangements which will
affect access to adjacent areas; and
·
designation of temporary site areas for
storage, plant, cabins, and associated site equipment.
The sources of operation stage landscape impacts will include:
·
existence of Primary, Distributor, and
District Distributor Roads, and their associated landscape framework; and
·
the road corridors as a physical edge, which
separates the waterfront from the hinterland.
·
minimising contractors accesses and working
areas as far as possible;
·
sensitively designed site hoarding to reduce
impacts upon landscape character from the construction works of Primary,
Distributor and District Distributor Roads, and associated drainage and
construction works;
·
protection and retention of existing
vegetation where possible in accordance with the Hong Kong Government ‘A Guide
to Tree Planting and Maintenance in Urban Hong Kong, Section 5 ‘Care of Trees
on Development Sites’ and the Country Parks Ordinance;
·
transplanting of trees where appropriate;
·
advance planting; and
·
conservation of top soil, if present.
Operation stage landscape mitigation measures should include:
·
new roads to incorporate suitable streetscape
amenity and landscape planting, where practical, to minimise visual and environmental impacts. It is proposed that the street hierarchy be
reinforced via the selection of different tree species for different
roads. It is, however, suggested that
the street tree palette be limited to three species used to distinguish roads
of similar character;
·
existing roads upgraded, where practical, to
‘marry’ with the proposed landscape framework; and
·
provision of a landscape deck to improve
pedestrian circulation between waterfront and hinterland.
Residual landscape impacts (i.e. impacts which remain after mitigation measures have been implemented) at construction and operation stages for Primary and District Distributor Roads are indicated in Table 14.4. Conclusions and recommendations for landscape and visual impacts associated with Primary and District Distributor Roads are indicated in paragraph 14.5.3.7.
Table 14.4 : Residual Landscape Impacts from Primary and Distributor Roads
Landscape Character Zone (1-17) (Refer to Figure 14.10a) |
Source of Impact |
Type of Impact |
Magnitude of Change at Main Project Stages |
Landscape Sensitivity |
Residual Impact Characteristic during
Construction Phase after Implementation of Mitigation Measures |
Residual Impact Characteristic during Operation
Phase after Implementation of Mitigation Measures |
|
|
|
|
Construction |
Operation |
|
|
|
Existing Character Zone |
|
|
|
|
|
|
|
The Servicemen’s Guides
Association (1) |
Road Construction & Operation |
C |
Low |
Low |
Low |
Very Slight to Negligible
Negative |
Very Slight to Negligible
Negative |
Citic Tower (2) |
Road Construction & Operation |
C |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Lung Wui Road (3) |
Road Construction & Operation |
R,C |
Low |
Low |
Low |
Very Slight to Negligible
Negative |
Very Slight to Negligible
Negative |
Tim Mei Avenue and Tim Wa
Avenue (4) |
Road Construction & Operation |
R,C |
Low |
Low |
Low |
Very Slight to Negligible
Negative |
Very Slight to Negligible
Negative |
Formar Tamar Basin (5) |
Road Construction & Operation |
C |
High |
Moderate |
Low |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Connaught Road Central/
Harcourt Road (6) |
Road Construction & Operation |
C |
Moderate |
Low |
Low |
Slight to Very Slight Negative |
Very Slight to Negligible
Negative |
Heliport (7) (to be
relocated prior to completion of reclamation) |
N/A |
N/A |
N/A |
N/A |
Low |
N/A |
N/A |
Temporary Park (adjacent
to Central Barracks (8) (to be
relocated prior to completion of reclamation) |
Road Construction & Operation |
N/A |
N/A |
N/A |
Medium |
N/A |
N/A |
Central Barracks (9) |
Road Construction & Operation |
C |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Queen’s Pier/ Edinburgh
Place (10) (to be relocated prior to completion of reclamation) |
N/A |
N/A |
Low |
N/A |
Low |
N/A |
N/A |
City Hall and garden (11) |
Road Construction & Operation |
C |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Northern Areas of Statue
Square adjacent to Connaught Rd (12) |
Road Construction & Operation |
C |
Moderate |
Low |
High |
Substantial to Moderate
Negative |
Moderate to Slight Negative |
“Star” Ferry Car Park (13) |
Road Construction & Operation |
C |
High |
Moderate |
Low |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Star Ferry Pier (14) (to be relocated prior to the completion
of reclamation) |
N/A |
N/A |
N/A |
N/A |
Medium |
N/A |
N/A |
General Post Office (15) |
Road Construction & Operation |
C |
High |
Moderate |
Low |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Eastern Edge of Central
Reclamation Phase I (16) |
Road Construction & Operation |
C |
Low |
Low |
Low |
Very Slight to Negligible
Negative |
Very Slight to Negligible
Negative |
18Ha of Victoria Harbour
between Central Reclamation Phase I and the Hong Kong Convention and
Exhibition Centre (17) |
Road Construction & Operation |
R |
Negligible |
Negligible |
Low |
Negligible |
Negligible |
18Ha of Victoria Harbour
between Central Reclamation Phase I and the Hong Kong Convention and
Exhibition Centre (17) |
Road Construction & Operation |
C |
Negligible |
Negligible |
Low |
Negligible |
Negligible |
Proposed Character Zone |
|
|
|
|
|
|
|
Waterfront Promenade (G) |
Road Operation |
C |
N/A |
Negligible |
High |
N/A |
Negligible |
Promenade Park (M) |
Road Operation |
C |
N/A |
Negligible |
High |
N/A |
Negligible |
Statue Square Open Spasce Corridor (C) |
Road Operation |
C |
N/A |
Negligible |
High |
N/A |
Negligible |
The Historic Corridor (D) |
Road Operation |
C |
N/A |
Moderate |
Medium |
N/A |
Moderate to Slight Negative |
City Hall Memorial
Garden (E) |
Road Operation |
C |
N/A |
Low |
High |
N/A |
Moderate to Slight Negative |
Festival Market (F) |
Road Operation |
C |
N/A |
Negligible |
High |
N/A |
Negligible |
Marine Basin (K) |
Road Operation |
C |
N/A |
Negligible |
High |
N/A |
Negligible |
The Arts &
Entertainment Corridor (L) |
Road Operation |
C |
N/A |
Low |
High |
N/A |
Moderate to Slight Negative |
Key : Type
of impact =
R - Impact on Landscape
Resources
= C – Impact on Landscape Character
Magnitude of Change at Main Project Stages = Negligible, Low, Moderate or High
Landscape Sensitivity = Low, Medium or High
Impact Characteristic = Negligible, Very Slight, Slight,
Moderate, Substantial or Very Substantial (Positive or Negative)
Only the construction phase impacts for this designated project will be considered as only the construction works are entrusted to the CRIII project. The operation phase impacts are being assessed by HyD/MWO under a separate EIA Study. The Layout Plan and Section of Designated Project 3 is shown on Figure 14.11.
The sources of construction stage landscape impacts will include:
·
construction of cut and cover tunnel;
·
designation of temporary site areas for
storage, plant, cabins and associated site equipment; and
·
temporary construction arrangements that
effect access to adjacent areas.
·
minimising contractors accesses and working
areas as far as possible;
·
sensitively designed site hoarding to reduce
impacts upon landscape character from the excavation of the cut and cover
tunnel;
·
advance planting; and
·
design of the temporary works areas so as to
optimise eventual uses.
Residual landscape impacts (i.e. impacts which remain after mitigation measures have been implemented) at the construction stage for Central-Wan Chai Bypass Tunnel are indicated in Table 14.5. Conclusions and recommendations for landscape and visual associated with the Central-Wan Chai Bypass are indicated in paragraph 14.5.4.7.
Table 14.5 : Residual Landscape Impacts from Central-Wan Chai Bypass Tunnel
Landscape Character Zone (1-17) |
Source of Impact |
Type of Impact |
Magnitude of Change at Main Project Stages |
Landscape Sensitivity |
Residual Impact Characteristic during
Construction Phase after Implementation of Mitigation Measures |
Residual Impact Characteristic during Operation
Phase after Implementation of Mitigation Measures |
|
|
|
|
Construction |
Operation |
|
|
|
The Servicemen’s Guides
Association (1) |
Tunnel Construction |
C |
Low |
N/A |
Low |
Very Slight to Negligible
Negative |
N/A |
Citic Tower (2) |
Tunnel Construction |
C |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Lung Wui Road (3) |
Tunnel Construction |
C |
Low |
N/A |
Low |
Very Slight to Negligible
Negative |
N/A |
Tim Mei Avenue and Tim Wa
Avenue (4) |
Tunnel Construction |
C |
Low |
N/A |
Low |
Very Slight to Negligible
Negative |
N/A |
Formar Tamar Basin (5) |
Tunnel Construction |
C |
High |
N/A |
Low |
Moderate to Slight Negative |
N/A |
Connaught Road Central/
Harcourt Road (6) |
Tunnel Construction |
C |
Low |
N/A |
Low |
Very Slight to Negligible Negative |
N/A |
Heliport (7) (to be relocated prior to completion of
reclamation) |
N/A |
N/A |
N/A |
N/A |
Low |
N/A |
N/A |
Temporary Park (adjacent
to Central Barracks (8) (to be
relocated prior to completion of reclamation) |
N/A |
N/A |
N/A |
N/A |
Medium |
N/A |
N/A |
Central Barracks (9) |
Tunnel Construction |
C |
Moderate |
N/A |
Medium |
Moderate to Slight Negative |
N/A |
Queen’s Pier/ Edinburgh
Place (10) (to be relocated prior to completion of reclamation) |
N/A |
N/A |
N/A |
N/A |
Low |
N/A |
N/A |
City Hall (11) |
Tunnel Construction |
C |
Moderate |
N/A |
Medium |
Moderate to Slight Negative |
N/A |
Northern Areas of Statue
Square adjacent to Connaught Rd (12) |
Tunnel Construction |
C |
Ngeligible |
N/A |
High |
Negligible |
N/A |
“Star” Ferry Car Park (13) |
Tunnel Construction |
C |
Low |
N/A |
Low |
Very Slight to Negligible
Negative |
N/A |
"Star" Ferry
Pier (14) (to be relocated prior to
completion of reclamation) |
N/A |
N/A |
N/A |
N/A |
Medium |
N/A |
N/A |
General Post Office (15) |
Tunnel Construction |
C |
High |
N/A |
Low |
Moderate to Slight Negative |
N/A |
Eastern Edge of Central
Reclamation Phase I (16) |
Tunnel Construction |
C |
Low |
N/A |
Low |
Very Slight to Negligible
Negative |
N/A |
18Ha of Victoria Harbour between
Central Reclamation Phase I and the Hong Kong Convention and Exhibition
Centre (17) |
Tunnel Construction |
R |
Negligible |
N/A |
Low |
Negligible |
N/A |
18Ha of Victoria Harbour
between Central Reclamation Phase I and the Hong Kong Convention and
Exhibition Centre (17) |
Tunnel Construction |
C |
Negligible |
N/A |
Low |
Negligible |
N/A |
Key : Type of Impact = R – Impact on Landscape Resources
= C – Impact on Landscape Character
Magnitude
of Impact = Negligible, Low, Moderate or High
Landscape
Sensitivity = Low, Medium or High
Impact
Characteristic = Negligible, Very Slight, Slight,
Moderate, Substantial or Very Substantial (Positive or Negative)
Only the construction phase impacts for the designated project will be considered as only the construction works are entrusted to the CRIII project. The operation phase impacts has, however, been assessed as negligible as the works are totally below ground. These impacts for the North Island line are being undertaken by the MTRC under a separate EIA Study. The Layout Plan and Section of Designated Project 4 is shown on Figure 14.12.
The sources of construction stage landscape impacts will include:
·
construction of cut and cover tunnel and
railway station structural envelope;
·
designation of temporary site areas for
storage, plant, cabins and associated site equipment; and
·
temporary construction arrangements that
effect access to adjacent areas.
Construction stage landscape mitigation measures should include:
·
minimising contractors accesses and working
areas as far as possible;
·
sensitively designed site hoarding to reduce
impacts upon landscape character from the excavation of the cut and cover
tunnel;
·
advance planting; and
·
design of the temporary works areas so as to
optimise eventual uses, such as promenade and public open spaces.
Residual landscape impacts (i.e. impacts which remain after mitigation measures have been implemented) at the construction stage for the North Island Line Protection Works within CRIII are indicated in Table 14.6. Conclusions and recommendations for landscape and visual impacts associated with the North Island Line Protection Works within CRIII are indicated in paragraph 14.5.5.7.
Table 14.6 : Residual Landscape Impacts from North Island Line Protection Works within CRIII
Landscape Character Zone (1-17) |
Source of Impact |
Type of Impact |
Magnitude of Change at Main Project Stages |
Landscape Sensitivity |
Residual Impact Characteristic during Construction Phase after
Implementation of Mitigation Measures |
Residual Impact Characteristic during Operation Phase after
Implementation of Mitigation Measures |
|
|||||||||
|
|
|
Construction |
Operation |
|
|
|
|
||||||||
The Servicemen’s Guides Association (1) |
Railway Station
Structural Envelope & Tunnel Construction |
C |
High |
N/A |
Low |
Moderate to Slight
Negative |
N/A |
|
||||||||
Citic Tower (2) |
Railway Station
Structural Envelope & Tunnel Construction |
C |
Low |
N/A |
Medium |
Slight to Very
Slight Negative |
N/A |
|
||||||||
Lung Wui Road (3) |
Railway Station
Structural Envelope & Tunnel Construction |
C |
High |
N/A |
Low |
Moderate to Slight
Negative |
N/A |
|
||||||||
Tim Mei Avenue and Tim Wa Avenue (4) |
Railway Station
Structural Envelope & Tunnel Construction |
C |
Low |
N/A |
Low |
Very Slight to
Negligible Negative |
N/A |
|
||||||||
Formar Tamar Basin (5) |
Railway Station
Structural Envelope & Tunnel Construction |
C |
Low |
N/A |
Low |
Very Slight to
Negligible Negative |
N/A |
|
||||||||
Connaught Road Central/ Harcourt Road (6) |
Railway Station
Structural Envelope & Tunnel Construction |
C |
Low |
N/A |
Low |
Very Slight to
Negligible Negative |
N/A |
|
||||||||
Heliport (7) (to be relocated prior to completion of
reclamation) |
N/A |
N/A |
N/A |
N/A |
Low |
N/A |
N/A |
|
||||||||
Temporary Park (adjacent to Central Barracks (8) (to
be relocated prior to completion of reclamation) |
N/A |
N/A |
N/A |
N/A |
Medium |
N/A |
N/A |
|
||||||||
Central Barracks
(9) |
Railway Station
Structural Envelope & Tunnel Construction |
C |
Low |
N/A |
Medium |
Slight to Very
Slight Negative |
N/A |
|
||||||||
Queen’s Pier/ Edinburgh Place (10) (to be relocated
prior to completion of reclamation) |
N/A |
N/A |
N/A |
N/A |
Low |
N/A |
N/A |
|
||||||||
|
City Hall (11) |
Railway Station
Structural Envelope & Tunnel Construction |
C |
Moderate |
N/A |
Medium |
Moderate to Slight
Negative |
N/A |
||||||||
Northern Areas of Statue Square adjacent to
Connaught Rd (12) |
Railway Station
Structural Envelope & Tunnel Construction |
C |
Low |
N/A |
High |
Very Slight to
Negligible Negative |
N/A |
|
||||||||
“Star” Ferry Car
Park (13) |
Railway Station
Structural Envelope & Tunnel Construction |
C |
Low |
N/A |
Low |
Very Slight to
Negligible Negative |
N/A |
|
||||||||
"Star" Ferry Pier (14) (to be relocated prior to completion of
reclamation) |
N/A |
N/A |
N/A |
N/A |
Medium |
N/A |
N/A |
|
||||||||
General Post Office (15) |
Railway Station
Structural Envelope & Tunnel Construction |
C |
Low |
N/A |
Low |
Very Slight to
Negligible Negative |
N/A |
|
||||||||
Eastern Edge of Central Reclamation Phase I (16) |
Railway Station
Structural Envelope & Tunnel Construction |
C |
Low |
N/A |
Low |
Very Slight to
Negligible Negative |
N/A |
|
||||||||
18Ha of Victoria Harbour between Central Reclamation
Phase I and the Hong Kong Convention and Exhibition Centre (17) |
Railway Station
Structural Envelope & Tunnel Construction |
R |
Negligible |
N/A |
Low |
Negligible |
N/A |
|
||||||||
18Ha of Victoria Harbour between Central Reclamation
Phase I and the Hong Kong Convention and Exhibition Centre (17) |
Railway Station
Structural Envelope & Tunnel Construction |
C |
Negligible |
N/A |
Low |
Negligible |
N/A |
|
||||||||
Key : Type of Impact = R – Impact on Landscape Resources
= C – Impact on Landscape Character
Magnitude of Impact = Negligible, Low, Moderate or High
Landscape
Sensitivity = Low, Medium or High
Impact
Characteristic = Negligible, Very Slight, Slight,
Moderate, Substantial or Very Substantial (Positive or Negative)
·
the physical process of site clearance of key
developments, namely City Hall (High Block only), General Post Office, Star
Ferry Pier and Queens Pier;
·
the construction works of principal
infrastructure development, namely reclamation, Primary, Distributor and
District Distributor Roads, the Central-Wan Chai Bypass Tunnel, the Hong Kong
Station Overrun Tunnel and North Island Line Protection Works;
·
designation of temporary site areas for
storage, plant, cabins and associated site equipment;
·
temporary construction arrangements that
affect access to adjacent areas; and
·
the construction works of key developments,
namely CDA Groundscraper, Festival Market, Central Government Complex, parks,
plazas, marine basin, and open space corridors.
·
existence of 18ha of new land in the harbour;
·
existence of Primary, Distributor, and
District Distributor Roads, the Central-Wan Chai Bypass Tunnel, the Hong Kong
Station Overrun Tunnel and the North Island Line Station and Tunnels;
·
new building developments including the CDA
Groundscraper, Festival Market, and Central Government Complex;
·
establishment of a network of open spaces
providing for a range of functions including pedestrian circulation and as a
venue for civic and community events;
·
the creation of major landscape spaces
forming pedestrian arteries linking the waterfront with existing open spaces
and other areas of the city;
·
the establishment of an integrated, pedestrian
oriented streetscape which will enhance pedestrian movement, integrate the
proposed and existing developments within an overall landscape framework and
generally improve the quality of the
public environment;
·
the provision of buffer areas to mitigate negative
environmental conditions; and
·
the creation of a high quality, international
standard waterfront park which will provide a unifying edge to the city
ultimately stretching between the Hong Kong Convention Centre in the east to
the Hong Kong Station Express Terminal in the west. The landscape design of the park will:
- integrate public gathering spaces for festivals and celebrations;
- provide a sanctuary from the bustling city environment;
- give to the city and its citizens an unrivalled passive recreational open space with spectacular views across the ever-changing harbour;
- provide a prestigious address to existing developments in the surrounding urban areas;
- provide an appropriate setting for Hong Kong’s new Civic and Cultural Buildings; and
- provide major new pedestrian arteries in the form of ‘green’ land bridges spanning local and arterial roadways, between urban spaces within the existing urban area and the new reclamation waterfront park.
·
very substantial to substantial negative
impacts upon the existing landscape resource and character of Victoria Harbour
through 18ha reclamation;
·
moderate to negligible negative impacts upon
the existing landscape character of the study area by the construction of
Primary, Distributor and District Distributor Roads,
·
moderate to negligible negative impacts upon
the existing landscape character of the study area by the construction of the
Central-Wan Chai Bypass Tunnel;
·
moderate to negligible negative impacts upon
the existing landscape character of the study area by the construction of the
North Island Line Protection Works;
·
substantial negative impacts upon the
existing landscape character of the study area by construction works of key
developments, namely CDA Groundscraper, Festival Market, Central Government
Complex, parks, plazas, marine basin, and1 open space corridors;
·
substantial negative impacts upon the
existing waterfront resource and character due to reclamation and use of
waterfront for construction accesses and staging areas;
·
substantial negative impacts upon streetscape
and sitting out areas within the study area due to demolition and construction
operations. Two sitting out areas
(combined approximate size 0.75 ha) and 300 No. trees approximately will be
affected. It should be noted that the
vast majority of the trees will be transplanted.
·
substantial negative impacts upon landscape
resources due to the loss of amenity facilities, including the “Star” Ferry
Pier pedestrian plaza (which will be reprovisioned with a new pier prior to
demolition), City Hall Memorial Garden and two temporary parks (located on the
northern boundary of the Central Barracks and on the eastern edge of the New
Ferry Piers reclamation).
·
very substantial negative impacts upon
landscape character and resources due to the implementation of 18ha of new land
in the harbour;
·
very substantial negative impacts upon
landscape character and resources due to the loss of 18ha of Victoria Harbour
through reclamation
·
substantial negative impacts upon landscape
character due to existence of Primary, Distributor, and District Distributor
Roads, the Central-Wan Chai Bypass Tunnel, the Hong Kong Station Overrun Tunnel
and the North Island Line Station and Tunnels;
·
moderate negative impacts upon landscape
character due to new building developments including the CDA Groundscraper,
Festival Market, and Central Government Complex;
·
very substantial positive impacts upon
landscape character and resources due to the implementation of the Waterfront
Park, which will include, but not be limited to, the following elements:
- a waterfront promenade ultimately stretching from the HKCEC to the Hong Kong Station Express Terminal;
- a major plaza (Clock Tower Plaza);
- a festival market forecourt;
- two smaller parks and a smaller plaza; and
- international standard quality of hardworks, softworks, street furniture and lighting.
·
very substantial positive impacts upon
landscape character and resources due to the implementation of the Statue
Square Open Space Corridor, which will include, but not be limited to, the
following elements:
- an elevated deck acting as a major pedestrian artery comprising feature tree and shrub planting;
- sunken plazas and transition points;
- co-ordinated integration with commercial developments along the western edge; and
- dramatic water feature and sculptural elements.
·
very substantial positive impacts upon
landscape character and resources due to the implementation of the Historic
Corridor, which will include, but not be limited to, the following elements:
- a tree-lined boulevard with wide footpaths linking the LegCo Building with the new waterfront;
- reconfigured Memorial Garden at City Hall; and
- unified and consistent themes in hard materials and planting design.
·
very substantial positive impacts upon
landscape character and resources due to the implementation of the Civic
Corridor, which will include, but not be limited to, the following elements:
- a large civic plaza defined by formal canopy trees and bold paving patterns;
- dramatic water features; and
- co-ordinated design with proposed civic buildings to reinforce the nodal civic importance of the area.
·
very substantial positive impacts upon
landscape character and resources due to the implementation of the Arts and
Entertainment Corridor, which will include, but not be limited to, the
following elements:
- a unique basin area providing the focus of existing and proposed cultural facilities integrating with the Waterfront Park promenade;
·
very substantial positive impacts upon
landscape character and resources due to the implementation of a Streetscape
Network, which will include, but not be limited to, the following elements:
- unification and integration of the area through consistent use of simple paving materials, street tree planting and shaded promenades;
- co-ordinated set of street furniture items, including seating, lighting, bollards, barriers and litter bins;
- reinforcement of street hierarchy by use of different tree species on different roads, limited to an overall street tree palette of three species.
·
very substantial positive impacts upon
landscape character and resources due to the implementation of Landscape Decks,
which will include, but not be limited to, the following elements:
- pedestrian connectivity to the waterfront spanning Road P2;
- landscape elements, including paving patterns and planting, to extend across the landscape decks thereby visually softening the structures and providing further amenity.
·
very substantial positive impacts upon
landscape character and resources due to the implementation of Supplementary
Landscape Spaces, which will include, but not be limited to, the following
elements:
- additional landscaped areas within adjoining development sites incorporating consistent design themes which maintain the overall character of the area without compromising the identity of individual developments.
·
very substantial positive impacts upon
landscape character and resources due to the upgrading of streetscape and
sitting out areas within the study area; and
·
very substantial positive impacts upon the
landscape character of Victoria Harbour due to 18ha of reclamation and the
subsequent development of an international style Waterfront Park.
Construction Stage
·
minimising contractors accesses and working
areas as far as possible;
·
sensitive design of civil engineering works
to note the design requirement of landscape mitigation measures and help
facilitate their successful implementation;
·
sensitively designed site hoarding to reduce
impacts upon landscape character from the construction works of principal
infrastructure development, namely reclamation, Primary, Distributor and
District Distributor Roads, the Central-Wan Chai Bypass Tunnel, the Hong Kong
Station Overrun Tunnel and the North Island Line Protection Works;
·
temporary screen planting of shrubs and trees
on mounded land to the periphery of the reclamation where practicable;
·
protection and retention of existing
vegetation where possible in accordance with the Hong Kong Government ‘A Guide
to Tree Planting and Maintenance in Urban Hong Kong, Section 5 ‘Care of Trees
on Development Sites’ and the Country Parks Ordinance;
·
transplanting of trees where appropriate;
·
advance planting;
·
conservation of top soil; and
·
design of the temporary works areas so as to
optimise eventual use as promenade and public open space.
Operation Stage
·
implementation of all proposed open spaces
including the Waterfront Promenade, Statue Square Corridor, Historic Corridor,
Civic Corridor, Streetscape Network, Landscape Decks, and Supplementary
Landscape Spaces (refer to Figures 14.15 - 14.17 and photomontages included in
paragraph 14.5.6.6.2 of this report);
·
provision of a legible, integrated pedestrian
circulation system linking major activity nodes, reinforcing links with
adjoining areas, and providing an international quality hard and soft landscape
treatment;
·
provision of a grade separated pedestrian
system to minimise vehicular/ pedestrian conflict;
·
provision of an integrated network of local
and regional open spaces for passive and active recreation;
·
overall enhancement of the landscape resource
and character of Victoria Harbour;
·
preservation of selected architectural
features, such as the “Star” Ferry Pier clock;
·
preservation of existing significant
vegetation, principally the two Banyan Trees flanking the Tamar Site;
·
new roads to incorporate suitable streetscape
amenity and landscape planting to minimise visual and environmental impacts;
and
·
existing roads upgraded to ‘marry’ with the
proposed landscape framework.
Table 14.7 : Residual Landscape Impacts from CRIII (Schedule 3 Project)
Landscape Character Zone (1-17) |
Source of Impact |
Type of Impact |
Magnitude of Change at Main Project Stages |
Landscape Sensitivity |
Residual Impact Characteristic during Construction Phase after
Implementation of Mitigation Measures |
Residual Impact Characteristic during Operation Phase after
Implementation of Mitigation Measures |
|
|
|
|
Construction |
Operation |
|
|
|
The Servicemen’s
Guides Association (1) |
Reclamation & Redevelopment |
R,C |
High |
High |
Low |
Moderate to Slight Negative |
Moderate to Slight Positive |
Citic Tower (2) |
Redevelopment of Adjacent Areas |
C |
High |
High |
Moderate |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
Lung Wui Road (3) |
Reclamation Redevelopment |
R,C |
High |
High |
Low |
Moderate to Slight Negative |
Moderate to Slight Positive |
Tim Mei Avenue and
Tim Wa Avenue (4) |
Redevelopment of Adjacent Areas |
C |
High |
High |
Low |
Moderate to Slight Negative |
Moderate to Slight Positive |
Formar Tamar Basin
(5) |
Redevelopment |
R,C |
High |
High |
Low |
Moderate to Slight Negative |
Moderate to Slight Positive |
Connaught Road
Central/ Harcourt Road (6) |
Redevelopment of Adjacent Areas |
C |
Moderate |
Moderate |
Low |
Slight to Very Slight Negative |
Slight to Very Slight Positive |
Heliport (7) (to be relocated prior to the completion
of reclamation) |
Reclamation Redevelopment |
R,C |
High |
N/A |
Low |
Moderate to Slight Negative |
N/A |
Temporary Park
(adjacent to Central Barracks (8) (to be relocated prior to the completion of
reclamation) |
Reclamation Redevelopment |
R,C |
High |
N/A |
Moderate |
Substantial to Moderate Negative |
N/A |
Central
Barracks (9) |
Redevelopment of Adjacent Areas |
C |
Moderate |
Moderate |
Moderate |
Moderate to Slight Negative |
Moderate to Slight Positive |
Queen’s Pier/
Edinburgh Place (10) (to be relocated prior to the completion of reclamation) |
Reclamation Redevelopment |
R,C |
High |
N/A |
Low |
Moderate to Slight Negative |
N/A |
City Hall (11) |
Partial Redevelopment |
R,C |
High |
High |
Moderate |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
Northern Areas of
Statue Square adjacent to Connaught Rd (12) |
Redevelopment |
R,C |
High |
High |
High |
Very Substantial to Substantial Negative |
Very Substantial to Substantial Positive |
“Star” Ferry Car Park (13) |
Reclamation & Redevelopment |
R,C |
High |
High |
Low |
Moderate to Slight Negative |
Moderate to Slight Positive |
"Star"
Ferry Pier (14) (to be relocated prior to the completion of reclamation) |
Reclamation & Redevelopment |
R,C |
High |
N/A |
Moderate |
Substantial to Moderate Negative |
N/A |
General Post Office
(15) |
Reclamation & Redevelopment |
R,C |
High |
High |
Low |
Moderate to Slight Negative |
Moderate to Slight Positive |
Eastern Edge of
Central Reclamation Phase I (16) |
Reclamation & Redevelopment of Adjacent Areas |
R,C |
High |
High |
Low |
Moderate to Slight Negative |
Moderate to Slight Positive |
18Ha of Victoria
Harbour between Central Reclamation Phase I and the Hong Kong Convention and
Exhibition Centre (17) |
Reclamation & Redevelopment |
R |
High |
High |
High |
Very Substantial to Substantial Negative |
Very Substantial to Substantial Negative |
18Ha of Victoria
Harbour between Central Reclamation Phase I and the Hong Kong Convention and
Exhibition Centre (17) |
Reclamation and Redevelopment |
C |
High |
High |
High |
Very Substantial to Substantial Negative |
Very Substantial to Substantial Positive |
Key : Type of Impact = R – Impact on Landscape Resources
= C – Impact on Landscape Character
Magnitude
of Impact = None, Low, Moderate or High
Landscape
Sensitivity = Low, Medium or High
Impact
Characteristic = Negligible, Very Slight, Slight,
Moderate, Substantial or Very Substantial (Positive or Negative)
This Visual Impact Assessment is concerned with visual impacts attributable to the 4no. individual Schedule 2 Projects in addition to the Schedule 3 Project. Readers of this Visual Impact Assessment should familiarise themselves with the Baseline Study – Description of the Environment within the CRIII Works Area – presented in Appendix T. Comparative layout plans and completion dates for each designated project are indicated in Figure 14.18.
It should be noted that, unlike existing reclamation areas in Western Kowloon and Hung Hom, the CRIII reclamation upon completion will not remain undeveloped for a great length of time. Upon completion of the reclamation activities construction will begin as soon as practicable on the remaining designated projects. Similarly, upon completion of major infrastructure, construction will begin on developments upon the reclamation such as the new Central Government Offices, Festival Market and Groundscraper. In this respect CRIII can be likened to CRI at the outlying islands ferry piers to the west.
An assessment of visual impacts attributable
to the overall development, as a Schedule 3 project, is thereafter presented in
para 14.5.6.
A separate Visual Impact Assessment for the ventilation shafts which will be constructed as part of the Hong Kong Station Extended Overrun Tunnel construction is included as Appendix V. Direct reference to these structures is therefore not included in this section.
The construction and operation stage visual impact assessment for reclamation will include assessment of impacts attributable to the reclamation seawalls, cooling water pumping stations, ferry piers, public landing steps and other marine facilities as all these items form an integral part of the “reclamation”. A layout plan and cross section for Designated Project 1 is indicated in the previous Figure 14.9.
The Zone of Visual Influence (ZVI) is the zone within which a development can be viewed without obstruction. The edge of the ZVI is termed the Visual Envelope. A Baseline Visual Envelope and photo viewpoint locations is indicated in the previous Figure 14.2. It is calculated that the reclamation will be clearly visible within a zone that encompasses the southern tip of Tsim Sha Tsui to the north and Hong Kong Park to the south. The reclamation will be clearly visible within an area of Victoria Harbour approximately 2km wide from a centreline drawn between the Tamar site in Admiralty and the Cultural Centre in Tsim Sha Tsui.
It should be noted that the ZVI is
approximate and that views of the reclamation are likely to be available from
additional locations. This assessment
is concerned with likely visual impacts to key visually sensitive receivers
(ZVIs) within the primary ZVI. Long
distance views of the reclamation are likely to be possible from more distant
locations such as elevated land and developments between Victoria Peak and
Mount Cameron but it is considered that impacts upon VSRs in these locations
will be of a much slighter magnitude.
·
Development within the study area - Citic
Tower and Central Barracks;
·
development to the east of the study area
including the Grand Hyatt Hotel and the Hong Kong Convention and Exhibition
Centre;
·
development to the south of the study area
including Connaught Road Central/Harcourt
Road and Queensway Road corridors;
·
development to the west of the study area
including Exchange Square, One International Finance Centre and the proposed
No. 2 IFC;
·
development located on the southern tip of
the Kowloon Peninsula including the Regent Hotel, Sheraton Hotel, New World
Centre and Star House.
·
promenade areas adjacent to clock tower, Star
Ferry Pier, HK Cultural Centre and HK Museum of Art at Tsim Sha Tsui
waterfront;
·
Star Ferries travelling to/from Central to
Tsim Sha Tsui;
·
Star Ferries travelling to/from Wan Chai to
Tsim Sha Tsui; and
·
additional marine traffic within Victoria
Harbour including pleasure craft.
The sources of construction stage visual impacts attributable to the reclamation will include:
·
the physical process of reclaiming 18ha of
new land in the harbour through importing fill material by barge;
·
the construction of temporary and permanent
sea walls and drainage channels;
·
the construction of cooling water pumping
stations;
·
demolition of existing Queen’s Pier and
“Star” Ferry Piers;
·
the construction of reprovisioned “Star”
ferry piers and public landing steps.
These structures will comprise 2no. piers per development with the
“star” ferry piers located at the end of the Statue Square Open Space Corridor
and the Public Landing Steps located at the end of the Historic Corridor.
Neither development is indicated in figures within this Chapter due to their
layout being unconfirmed at the time of study;
·
temporary site areas for storage, plant,
cabins and associated site equipment; and
·
construction traffic;
·
temporary site access areas, site cabins and
heavy machinery; and
·
after dark lighting and welding.
The sources of operation stage visual impacts attributable to the reclamation will include:
·
18ha of new land in the harbour;
·
permanent sea walls;
·
cooling water pumping stations; and
·
“Star” ferry piers and public landing steps.
·
sensitively designed site hoarding to help
screen views to the demolition works of existing Queen’s Pier and “Star” Ferry
Piers;
·
sensitively designed site hoarding to help
screen views to the construction of new Public Landing Steps and “Star” Ferry
Piers;
·
sensitively designed site hoarding to help
screen views to the reclamation works and construction of new sea walls and
drainage channels;
·
temporary screen planting of shrubs and trees
on mounded land to the periphery of the reclamation;
·
advanced planting of trees and shrubs where
practicable;
·
hydroseeding with perennial flower mix to
areas of land which become unused for long periods during the construction
period; and
·
operational time restrictions to limit
after-dark welding and lighting.
·
sensitive contemporary form and finishes to
new “Star” Ferry Piers and Public Landing Steps;
·
temporary screen planting of shrubs and trees
on mounded land to the periphery of the reclamation where practicable and not
implemented during the Construction Stage;
·
removal of all debris from reclamation and
maintaining that surfaces are even; and
·
hydroseeding of reclamation, as appropriate,
at formed sites awaiting development or areas likely to be unused for a long
period. These areas would be subject to
ongoing irrigation and maintenance to ensure that vegetation cover is
complete. For land pending for
development / construction for more than nine months, hydroseeding should
include a mixture of perennial flowers.
Residual
visual impacts (i.e. impacts which remain after
mitigation measures have been implemented) at construction and operation stages
for reclamation are indicated in Table 14.8.
Table 14.8 : Residual Visual Impacts from Designated Project 1 - Reclamation
Location of Key Visually
Sensitive Receivers (VSRs) |
Type of VSR/ ID no. (Refer
to Figure 14.19) |
Primary Source of Impact |
Min. Distance between VSR
and DP1 |
Magnitude of Change |
Receiver Sensitivity |
Impact Characteristic
during Construction Phase after Implementation of Mitigation Measures |
Impact Characteristic
during Operation Phase After Implementation of
Mitigation Measures |
|
Primary
VSRs (Development) |
|
|
|
Construction |
Operation |
|
|
|
Hong Kong Convention
and Exhibition Centre |
GI/C/1 |
Reclamation |
250m |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Grand Hyatt Hotel |
H/2 |
Reclamation |
300m |
Moderate |
Low |
High |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Wan Chai Tower |
G/IC/3 |
Reclamation |
400m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Revenue Tower |
G/IC/4 |
Reclamation |
350m |
Low |
Negligible |
Low |
Very Slight to Negligible Negative |
Negligible |
Shui On Centre |
C/5 |
Reclamation |
300m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Telecom House Hong Kong Arts
Centre Harbour View
International House |
C & G/IC/6 |
Reclamation |
280m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Fleet House Harcourt House |
C/7 |
Reclamation |
320m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Chung Nam Building |
C/8 |
Reclamation |
400m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Asian House |
C/9 |
Reclamation |
450m |
Low |
Negligible |
Low |
Very Slight to Negligible Negative |
Negligible |
Hong Kong Police Force
Headquarters |
G/IC/10 |
Reclamation |
380m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Citic Tower |
C/11 |
Reclamation |
130m |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Paget House |
C/12 |
Reclamation |
550m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Marriott Hotel |
H/13 |
Reclamation |
500m |
Moderate |
Low |
High |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Conrad Hotel |
H/14 |
Reclamation |
600m |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
One Pacific Place |
C/15 |
Reclamation |
500m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Two Pacific Place/Island Shangri-La Hotel |
C/H/16 |
Reclamation |
580m |
Low |
Negligible |
Medium |
Slight to very Slight Negative |
Negligible |
United Centre |
C/17 |
Reclamation |
400m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Queensway Government
Offices |
G/IC/18 |
Reclamation |
500m |
Low |
Negligible |
Low |
Very Slight to Negligible Negative |
Negligible |
The Supreme Court |
G/IC/19 |
Reclamation |
460m |
Low |
Negligible |
Low |
Very Slight to Negligible Negative |
Negligible |
Admiralty Centre |
C/20 |
Reclamation |
350m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Far East Finance
Centre |
C/21 |
Reclamation |
280m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Lippo Centre |
C/22 |
Reclamation |
340m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Citibank Plaza |
C/23 |
Reclamation |
480m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Bank of China Tower |
C/24 |
Reclamation |
420m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Fairmont House |
C/25 |
Reclamation |
340m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Bank of America Tower |
C/26 |
Reclamation |
220m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Hutchison House |
C/27 |
Reclamation |
180m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Cheung Kong Centre |
C/28 |
Reclamation |
420m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
PLA Forces Hong Kong Building |
G/IC/29 |
Reclamation |
70m |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Furama Hotel |
H/31 |
Reclamation, Demolition* |
180m |
Moderate |
Low |
High |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Ritz Carlton Hotel |
H/32 |
Reclamation, Demolition |
180m |
Moderate |
Low |
High |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Hong Kong Club
Building |
C/33 |
Reclamation, Demolition |
180m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Old Bank of China
Building |
C/34 |
Reclamation, Demolition |
360m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Hong Kong and
Shanghai Bank |
C/35 |
Reclamation, Demolition |
340m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Standard Chartered
Bank |
C/36 |
Reclamation, Demolition |
350m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Prince’s Building |
C/37 |
Reclamation, Demolition |
280m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Mandarin Hotel |
H/38 |
Reclamation, Demolition |
200m |
Moderate |
Low |
High |
Substantial to Moderate Negative |
Moderate to Slight Negative |
St George’s Building |
C/39 |
Reclamation, Demolition |
220m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Swire House |
C/40 |
Reclamation, Demolition |
240m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Jardine House |
C/41 |
Reclamation, Demolition |
120m |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
World Wide House |
C/42 |
Reclamation, Demolition |
230m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Exchange Square I and II |
C/43 |
Reclamation, Demolition |
60m |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Positive |
Exchange Square III |
C/44 |
Reclamation, Demolition |
260m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
One International
Finance Centre |
C/45 |
Reclamation, Demolition |
280m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Mega Tower (approved
proposal) |
C/46 |
N/A |
60m |
N/A |
N/A |
Medium |
N/A |
N/A |
City Hall and Garden |
G/IC47 |
Reclamation, Demoltion |
40m |
High |
Moderate |
High |
Very Substantial to Substantial Negative |
Substantial to Moderte Negative |
Primary VSRs – Transport Corridors |
||||||||
Expo Drive |
T1 |
Reclamation |
250m |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Convention Avenue |
T2 |
Reclamation |
250m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Fenwick Pier Street |
T3 |
Reclamation |
140m |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Fenwick Pier Street
flyover and pedestrian footbridge |
T4 |
Reclamation |
200m |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Lung Wui Road |
T5 |
Reclamation |
30m |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Tim Mei Avenue |
T6 |
Reclamation |
50m |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Tim Wa Avenue |
T7 |
Reclamation |
50m |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Connaught Road/
Harcourt Road |
T8 |
Reclamation |
160m |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Edinburgh Place |
T9 |
Reclamation, Demolition |
40m |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Connaught Place |
T10 |
Reclamation, Demolition |
80m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
New Ferry Piers
access road and pedestrian promenade (Man Yiu Street) |
T11 |
Reclamation, Demolition |
20m |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Primary VSRs – Harbour/Open Space |
||||||||
Harcourt Garden |
O1 |
Reclamation |
360m |
Moderate |
Low |
High |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Statue Square |
O2 |
Reclamation, Demolition |
150m |
Moderate |
Low |
High |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Victoria Harbour |
M1 |
Reclamation, Demolition |
0M |
High |
Moderate |
High |
Very Substantial to Substantial Negative |
Substantial to Moderate Negative |
Secondary VSRs and Kowloon Peninsula |
||||||||
TST promenade areas adjacent to clock tower, Star Ferry Pier, HK
Cultural Centre, and HK Museum of Art |
|
Reclamation |
2KM |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Regent Hotel,
Sheraton Hotel, New World Centre, and Star House |
|
Reclamation |
2KM |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Star Ferries
travelling to/from Central to Tsim Sha Tsui |
M1 |
Reclamation |
0-2KM |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Positive |
Star Ferries
travelling to/from Wan Chai to Tsim Sha Tsui |
M1 |
Reclamation |
1-2KM |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Additional marine
traffic within Victoria Harbour including pleasure craft |
M1 |
Reclamation |
0-2KM |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Positive |
Victoria Peak/Mount Austin Road |
R/2 |
Reclamation |
3.5KM |
Low |
Low |
High |
Moderate to Slight Negative |
Moderate to Slight Negative |
The Peak Tower |
C/3 |
Reclamation |
3KM |
Low |
Low |
High |
Moderate to Slight Negative |
Moderate to Slight Negative |
Mount Gough |
R/4 |
Reclamation |
1.7KM |
Low |
Low |
High |
Moderate to Slight Negative |
Moderate to Slight Negative |
Magazine Gap Road |
R/5 |
Reclamation |
1.5KM |
Low |
Low |
High |
Moderate to Slight Negative |
Moderate to Slight Negative |
Robinson Road/ Bowen
Road corridor |
R/6 |
Reclamation |
1KM |
Low |
Low |
High |
Moderate to Slight Negative |
Moderate to Slight Negative |
Hopewell Centre |
C/7 |
Reclamation |
0.7KM |
Low |
Low |
Medium |
Slight to Very Slight Negative |
Slight to Very Slight Positive |
Hong Kong Park |
O/8 |
Reclamation |
0.3KM |
Low |
Low |
High |
Moderate to Slight Negative |
Moderate to Slight Negative |
Key : Magnitude of Impact = Negligible, Low, Moderate or
High
Receiver Sensitivity = Low, Medium or High
Impact Significance Thresholds = Negligible, Very Slight, Moderate,
Substantial or Very Substantial (Positive or Negative)
Types of Key Visually Sensitive Receivers (VSRs) = R – Residential
T – Transport Related
C – Commercial
O
– Open Space
M
– Marine Traffice
G/IC
– Government, Institution, Community
* Demolition refers to the resumption of Queen’s Pier and
“Star” Ferry Piers
There follows conclusions and recommendations for landscape and visual impacts associated with reclamation (Designated Project 1)
Landscape Impacts
Residual landscape impacts for reclamation are indicated in Table 14.3. 18ha of reclamation will be implemented in areas of existing harbour resource, which is considered highly sensitive to change. The landscape character of surrounding areas is often associated with its proximity to the harbour edge. Generally, however, the study area comprises a series of unrelated architectural elements fragmented with numerous physically prominent utility features and temporary civil works. Little or no coherence is derived from the surrounding urban environment nor is advantage taken of the few positive aspects of the site.
As a result of the baseline landscape conditions, the landscape sensitivity is lower in some character zones than might otherwise be expected. This in turn has lowered the magnitude of impact associated with reclamation upon some character zones. The assessment has concluded that in general the residual operation stage landscape impacts will range from moderate to very slight. However, in the following area residual operation stage landscape impacts are likely to be very substantial to moderate:
·
Victoria Harbour.
Visual Impacts
Residual visual impacts for reclamation are indicated in Table 14.8. The sensitivity of VSRs to the reclamation is generally reduced by the poorly articulated waterfront. Whilst construction stage impacts are considered to be generally high, the operation stage impacts are substantially reduced by mitigation measures such as hyroseeding. In this way many more distant VSRs will perceive their views of the study area to have changed by the addition of a green edge to the harbour.
In this context, residual operation stage visual impact characteristics are predicted to be generally moderate to negligible (negative). The highest visual impacts, considered substantial to moderate in this assessment, will be felt by VSRs in the following locations:
·
City Hall and garden; and
·
Victoria Harbour.
Conclusion
It is considered that residual landscape and visual impacts attributable to Designated Project 1 are acceptable with mitigation measures as described in category (c) of Annex 10 of the Technical Memorandum Environmental Impact Assessment Process. There will be some adverse effects, but these can be eliminated, reduced or offset to a large extent by specific measures.
The visual impact assessment for primary and district distributor roads will include assessment of impacts attributable to the roads, drainage, utilities and other services associated with the road reserves. A layout plan and cross section for Designated Project 2 is indicated in the previous Figure 14.10. Proposed typical streetscape sections are indicated in the previous Figure 14.17.
Visual impacts associated with this project at both the construction and operation stage will be assessed within the context of the existing reclamation and the likely scenario that surrounding areas will be temporarily hydroseeded or under use as construction sites. Thus the magnitude of change to existing views will be lower. This may serve to reduce the magnitude of the impacts attributable to the roads.
Zones of Visual Influence for Primary & District Distributor Roads
·
Fenwick Pier Street;
·
Tim Mei Avenue;
·
Tim Wa Avenue;
·
Man Yiu Street; and
·
Outlying Islands Ferry Piers (4-7).
Key Visually Sensitive Receivers (VSRs) for Primary & District
Distributor Roads
·
Exchange Square I and II;
·
Man Yiu Street;
·
Jardine House;
·
Citic Tower;
·
PLA Forces Hong Kong Building;
·
Fenwick Pier Street;
·
Lung Wui Avenue;
·
Tim Mei Avenue;
·
Tim Wa Avenue;
·
Edinburgh Place; and
·
Victoria Harbour.
The sources of construction stage visual impacts attributable to the Primary and District Distributor Roads will include:
·
temporary site areas for storage, plant,
cabins and associated site equipment;
·
construction traffic;
·
temporary site access areas, site cabins and
heavy machinery; and
·
after dark lighting and welding.
The sources of operation stage visual impacts attributable to the Primary and District Distributor Roads will include:
·
the physical presence of an road system on
the reclamation;
·
after dark street lighting;
·
vehicular traffic; and
·
tree and shrub planting to road corridor.
·
sensitively designed site hoarding to help
screen views to the road construction works;
·
designated service corridors beneath
footpaths to prevent potential impacts upon vegetation during services
maintenance;
·
advanced planting of trees and shrubs where
practicable; and
·
operational time restrictions to limit
after-dark welding and lighting.
·
tree and shrub planting to all road
corridors. The vegetation matrix should
adopt robust themes repeated throughout the reclamation development to
reinforce the international image of
CRIII;
·
where practical, implementation of a road
design hierarchy illustrated by streetscape sections in the previous Figure
14.21. Where the width of footpath permits continuous amenity planting strips
should be provided;
·
sensitively designed colour themes to
footpath paving areas; and
·
sensitively design of road structures and
light fittings.
Residual visual impacts (i.e. impacts which remain after mitigation measures have been implemented) at construction and operation stages for Primary and District Distributor Roads are indicated in Table 14.9.
Table 14.9 : Residual Visual Impacts from Designated Project 2 – Primary and District Distributor Roads
Location of Key Visually Sensitive
Receivers (VSRs) |
Type of VSR/ ID
no. (Refer to Figure 14.19) |
Primary Source
of Impact |
Min. Distance
between VSR and DP2 |
Magnitude of
Change |
Receiver
Sensitivity |
Impact
Characteristic during Construction Phase after Implementation of Mitigation
Measures |
Impact
Characteristic during Operation Phase After
Implementation of Mitigation Measures |
|
Primary VSRs
(Development) |
|
|
|
Construction |
Operation |
|
|
|
Hong Kong Convention and
Exhibition Centre |
GI/C/1 |
Roads |
350m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Grand Hyatt Hotel |
H/2 |
Roads |
350m |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Wan Chai Tower |
G/IC/3 |
Roads |
410m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Revenue Tower |
G/IC/4 |
Roads |
360m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Shui On Centre |
C/5 |
Roads |
330m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Telecom House Hong Kong Arts Centre Harbour View International
House |
C & G/IC/6 |
Roads |
300m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Fleet House Harcourt House |
C/7 |
Roads |
220m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Chung Nam Building |
C/8 |
Roads |
300m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Asian House |
C/9 |
Roads |
320m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Hong Kong Police Force
Headquarters |
G/IC/10 |
Roads |
220m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Citic Tower |
C/11 |
Roads |
30m |
High |
Low |
Medium |
Substantial to Moderate Negative |
Slight to Very Slight Negative |
Paget House |
C/12 |
Roads |
440m |
Low |
Negligible |
Medium |
Slight to Very Slight
Negative |
Negligible |
Marriott Hotel |
H/13 |
Roads |
400m |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Conrad Hotel |
H/14 |
Roads |
450m |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
One Pacific Place |
C/15 |
Roads |
360m |
Low |
Negligible |
Medium |
Slight to Very Slight
Negative |
Negligible |
Two Pacific Place/Island
Shangri-La Hotel |
C/H/16 |
Roads |
450m |
Low |
Negligible |
Medium |
Slight to Very Slight
Negative |
Negligible |
United Centre |
C/17 |
Roads |
250m |
Low |
Negligible |
Medium |
Slight to Very Slight
Negative |
Negligible |
Queensway Government
Offices |
G/IC/18 |
Roads |
420m |
Low |
Negligible |
Medium |
Slight to Very Slight
Negative |
Negligible |
The Supreme Court |
G/IC/19 |
Roads |
430m |
Low |
Negligible |
Medium |
Slight to Very Slight
Negative |
Negligible |
Admiralty Centre |
C/20 |
Roads |
220m |
Low |
Negligible |
Medium |
Slight to Very Slight
Negative |
Negligible |
Far East Finance Centre |
C/21 |
Roads |
220m |
Low |
Negligible |
Medium |
Slight to Very Slight
Negative |
Negligible |
Lippo Centre |
C/22 |
Roads |
300m |
Low |
Negligible |
Medium |
Slight to Very Slight
Negative |
Negligible |
Citibank Plaza |
C/23 |
Roads |
520m |
Low |
Negligible |
Medium |
Slight to Very Slight
Negative |
Negligible |
Bank of China Tower |
C/24 |
Roads |
420m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Fairmont House |
C/25 |
Roads |
340m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Bank of America Tower |
C/26 |
Roads |
250m |
Low |
Negligible |
Medium |
Slight to Very Slight
Negative |
Negligible |
Hutchison House |
C/27 |
Roads |
220m |
Low |
Negligible |
Medium |
Slight to Very Slight
Negative |
Negligible |
Cheung Kong Centre |
C/28 |
Roads |
450m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
PLA Forces Hong Kong Building |
G/IC/29 |
Roads |
70m |
High |
Low |
Medium |
Substantial to Moderate
Negative |
Slight to Very Slight Negative |
Furama Hotel |
H/31 |
Roads |
220m |
Moderate |
Low |
High |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Ritz Carlton Hotel |
H/32 |
Roads |
220m |
Moderate |
Low |
High |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Hong Kong Club Building |
C/33 |
Roads |
220m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Old Bank of China Building |
C/34 |
Roads |
410m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Hong Kong and Shanghai
Bank |
C/35 |
Roads |
400m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Standard Chartered Bank |
C/36 |
Roads |
400m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Prince’s Building |
C/37 |
Roads |
300m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Mandarin Hotel |
H/38 |
Roads |
250m |
Moderate |
Low |
High |
Substantial to Moderate Negative |
Moderate to Slight
Negative |
St George’s Building |
C/39 |
Roads |
220m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Swire House |
C/40 |
Roads |
260m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Jardine House |
C/41 |
Roads |
150m |
High |
Low |
Medium |
Substantial to Moderate Negative |
Slight to Very Slight Negative |
World Wide House |
C/42 |
Roads |
270m |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Exchange Square I and II |
C/43 |
Roads |
130m |
High |
Low |
Medium |
Substantial to Moderate
Negative |
Slight to Very Slight Negative |
Exchange Square III |
C/44 |
Roads |
260m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
One International Finance
Centre |
C/45 |
Roads |
300m |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Mega Tower (approved
proposal) |
C/46 |
Roads |
40m |
N/A |
Low |
Medium |
N/A |
Slight to Very Slight negative |
City Hall and Garden |
G/IC47 |
Roads |
30m |
High |
Moderate |
High |
Very Substantial to Substantial Negative |
Substantial to Moderate Negative |
Primary VSRs – Transport Corridors |
||||||||
Expo Drive |
T1 |
Roads |
350m |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Convention Avenue |
T2 |
Roads |
280m |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Fenwick Pier Street |
T3 |
Roads |
0m |
High |
Low |
High |
Very Substantial to Substantial Negative |
Moderate to Slight Negative |
Fenwick Pier Street
flyover and pedestrian footbridge |
T4 |
Roads |
20M |
Moderate |
Low |
High |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Lung Wui Road |
T5 |
Roads |
0M |
High |
Low |
High |
Very Substantial to
Substantial Negative |
Moderate to Slight Negative |
Tim Mei Avenue |
T6 |
Roads |
0M |
High |
Low |
High |
Very Substantial to Substantial Negative |
Moderate to Slight Negative |
Tim Wa Avenue |
T7 |
Roads |
0M |
High |
Low |
High |
Very Substantial to Substantial Negative |
Moderate to Slight Negative |
Connaught Road/ Harcourt
Road |
T8 |
Roads |
200m |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Edinburgh Place |
T9 |
Roads |
0M |
High |
Moderate |
High |
Very Substantial to
Substantial Negative |
Substantial to Moderate
Negative |
Connaught Place |
T10 |
Roads |
0M |
Low |
Negligible |
High |
Moderate to Slight
Negative |
Negligible |
New Ferry Piers access
road and pedestrian promenade (Man Yiu Street) |
T11 |
Roads |
0M |
High |
Low |
High |
Very Substantial to Substantial Negative |
Moderate to Slight Negative |
Primary VSRs – Harbour/Open Space |
||||||||
Harcourt Garden |
O1 |
Roads |
150m |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Statue Square |
O2 |
Roads |
200m |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Victoria Harbour |
M1 |
Roads |
120m |
High |
Negligible |
High |
Very Substantial to Substantial Negative |
Negligible |
Secondary VSRs and Kowloon
Peninsula |
||||||||
TST promenade areas adjacent to clock tower, Star Ferry Pier, HK
Cultural Centre, and HK Museum of Art |
|
Roads |
2KM |
Low |
Negligible |
High |
Moderate to Slight
Negative |
Negligible |
Regent Hotel, Sheraton
Hotel, New World Centre, and Star House |
|
Roads |
2KM |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Star Ferries travelling
to/from Central to Tsim Sha Tsui |
M1 |
Roads |
0-2KM |
Moderate |
Negligible |
Medium |
Moderate to Slight Negative |
Negligible |
Star Ferries travelling
to/from Wan Chai to Tsim Sha Tsui |
M1 |
Roads |
1-2KM |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Additional marine traffic
within Victoria Harbour including pleasure craft |
M1 |
Roads |
0-2KM |
Moderate |
Negligible |
Medium |
Moderate to Slight Negative |
Negligible |
Victoria Peak/Mount Austin Road |
R/2 |
Roads |
3.5KM |
Low |
Negligible |
High |
Moderate to Slight
Negative |
Negligible |
The Peak Tower |
C/3 |
Roads |
3KM |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Mount Gough |
R/4 |
Roads |
1.7KM |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Magazine Gap Road |
R/5 |
Roads |
1.5KM |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Robinson Road/ Bowen Road
corridor |
R/6 |
Roads |
1KM |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Hopewell Centre |
C/7 |
Roads |
0.7KM |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Hong Kong Park |
O/8 |
Roads |
0.3KM |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Location of Proposed Visually Sensitive Receivers (VSRs proposed) (Refer to Figure 14.14) |
|
|
|
|
|
|
|
|
Waterfront Promenade |
OG |
Roads |
100m |
N/A |
Negligible |
High |
N/A |
Negligible |
Promenade Park |
OM |
Roads |
30m |
N/A |
Low |
High |
N/A |
Moderate to Slight Negative |
Civic Plaza |
OH |
Roads |
10m |
N/A |
Low |
High |
N/A |
Moderate to Slight Negative |
Historic Corridor |
OD |
Roads |
0m |
N/A |
Moderate |
High |
N/A |
Substantial to Moderate Negative |
Marine Basin |
OK |
Roads |
40m |
N/A |
Negligible |
High |
N/A |
Negligible |
Arts &
Entertainment Corridor |
OL |
Roads |
15m |
N/A |
Low |
High |
N/A |
Moderate to Slight Negative |
Groundscraper |
C |
Roads |
0m |
N/A |
Low |
Medium |
N/A |
Slight to Very Slight Negative |
Central Government Offices |
G/IC |
Roads |
120m |
N/A |
Low |
Medium |
N/A |
Slight to Very Slight Negative |
Festival Market |
C |
Roads |
10m |
N/A |
Low |
Medium |
N/A |
Slight to Very Slight Negative |
Statue Square Open Space
Corridor |
OC |
Roads |
0m |
N/A |
Negligible |
High |
N/A |
Negligible |
City Hall Memorial Garden |
OE |
Roads |
10m |
N/A |
Low |
High |
N/A |
Moderate to Slight Negative |
Key : Magnitude of
Impact = Negligible, Low, Moderate or High
Receiver
Sensitivity = Low, Medium or High
Impact
Significance Thresholds = Negligible, Very Slight, Slight, Moderate,
Substantial or Very Substantial (Positive or Negative)
Types of Key
Visually Sensitive Receivers (VSRs = R – Residential
T - Transport Related
C – Commercial
O - Open Space
M - Marine Traffic
G/IC - Government, Institution,
Community
These follow conclusions and recommendations for residual landscape and visual impacts associated with Primary and District Distributor Roads (Designated Project 2)
Landscape Impacts
Residual landscape impacts for Primary and District Distributor Roads are indicated in Table 14.4. Construction stage impacts will be associated with the implementation of roads located within reclamation (Designated Project 1). The landscape sensitivity of adjacent areas is lowered by its proximity to the reclamation. Within this context, landscape impact characteristics are considered slight to very slight negative in the operation stage.
Visual Impacts
Residual visual impacts for Primary and District Distributor Roads are indicated in Table 14.9. The sensitivity of VSRs to the development is reduced by their proximity to the reclamation upon which the roads are located. In this context, visual impact characteristics are considered generally moderate to negligible (negative). The greatest visual impacts, considered substantial to moderate in this assessment, will be felt by VSRs in the following locations:
·
Edinburgh Place;
·
Historic Corridor; and
·
City Hall and garden.
Conclusion
It is considered that residual landscape and visual impacts attributable to Designated Project 2 are acceptable with mitigation measures as described in category (c) of Annex 10 of the Technical Memorandum Environmental Impact Assessment Process. There will be some adverse effects, but these can be eliminated, reduced or offset to a large extent by specific measures.
Only the construction phase impacts for this designated project will be considered as only the construction works are entrusted to the CRIII project. The operation phase impacts are being assessed by HyD/MWO under a separate EIA Study. A layout plan and cross section for Designated Project 3 is indicated in the previous Figure 14.11.
It should be noted that the tunnel is scheduled for completion at the same time as the reclamation. It is predicted, therefore, that the tunnel construction works will be viewed within the context of the reclamation construction works. Thus the magnitude of change to existing views will be lower. This may serve to reduce the magnitude of the impacts attributable to the tunnel.
Zones of Visual Influence
(ZVIs) for the Schedule 3 project as a whole are indicated in the previous
Figure 14.2. The Central-Wan Chai
Bypass Tunnel which forms Designated Project 3 will be located in cut and cover
tunnel in areas of reclamation and will interface with existing reclamation at
CRI beneath Man Yiu Street.
Key VSRs for the Schedule 3 project as a whole are indicated in the previous Figure 14.19. It is considered that VSRs in the following locations will be most sensitive to the construction of the Central-Wan Chai Bypass Tunnel:
·
Citic Tower;
·
PLA Forces Hong Kong Building;
·
Lung Wui Avenue; and
·
Victoria Harbour.
The sources of construction stage visual impacts attributable to the Central-Wan Chai Bypass Tunnel will include:
·
temporary site areas for storage, plant,
cabins and associated site equipment;
·
construction traffic;
·
temporary site access areas, site cabins and
heavy machinery; and
·
after dark lighting and welding.
Construction stage visual mitigation measures should include:
·
sensitively designed site hoarding to help
screen views to the tunnel construction works;
·
advanced planting of trees and shrubs where
practicable;
·
operational time restrictions to limit
after-dark welding and lighting;
·
temporary screen planting of shrubs and trees
on mounded land to the periphery of the reclamation; and
·
hydroseeding to areas of land which become
unused for long periiods during the construction period.
Residual visual impacts (i.e. impacts which remain after mitigation measures have been implemented) at the construction stage for Central-Wan Chai Bypass Tunnel are indicated in Table 14.10.
Table 14.10 : Residual Visual Impacts from Designated Project 3 – Central-Wan Chai Bypass Tunnel
Locatin of Key
Visually Sensitive Receivers (VSRs) |
Type of VSR/ ID
no. (Refer to Figure 14.19) |
Primary Source
of Impact |
Min. Distance
between VSR and DP3 |
Magnitude of
Change |
Receiver
Sensitivity |
Impact
Characteristic during Construction Phase after Implementation of Mitigation
Measures |
Impact
Characteristic during Operation Phase After
Implementation of Mitigation Measures |
|
Primary VSRs
(Development) |
|
|
|
Construction |
Operation |
|
|
|
Hong Kong Convention and
Exhibition Centre |
GI/C/1 |
Tunnel Construction |
300m |
Moderate |
N/A |
Medium |
Moderate to Slight Negative |
N/A |
Grand Hyatt Hotel |
H/2 |
Tunnel Construction |
300m |
Low |
N/A |
High |
Moderate to Slight Negative |
N/A |
Wan Chai Tower |
G/IC/3 |
Tunnel Construction |
400m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Revenue Tower |
G/IC/4 |
Tunnel Construction |
400m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Shui On Centre |
C/5 |
Tunnel Construction |
330m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Telecom House Hong Kong Arts Centre Harbour View International
House |
C & G/IC/6 |
Tunnel Construction |
300m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Fleet House Harcourt House |
C/7 |
Tunnel Construction |
380m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Chung Nam Building |
C/8 |
Tunnel Construction |
420m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Asian House |
C/9 |
Tunnel Construction |
500m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Hong Kong Police Force
Headquarters |
G/IC/10 |
Tunnel Construction |
400m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Citic Tower |
C/11 |
Tunnel Construction |
220m |
High |
N/A |
Medium |
Substantial to Moderate Negative |
N/A |
Paget House |
C/12 |
Tunnel Construction |
650m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Marriott Hotel |
H/13 |
Tunnel Construction |
580m |
Low |
N/A |
High |
Moderate to Slight Negative |
N/A |
Conrad Hotel |
H/14 |
Tunnel Construction |
670m |
Low |
N/A |
High |
Moderate to Slight Negative |
N/A |
One Pacific Place |
C/15 |
Tunnel Construction |
580m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Two Pacific Place/Island
Shangri-La Hotel |
C/H/16 |
Tunnel Construction |
650m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
United Centre |
C/17 |
Tunnel Construction |
480m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Queensway Government
Offices |
G/IC/18 |
Tunnel Construction |
600m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
The Supreme Court |
G/IC/19 |
Tunnel Construction |
550m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Admiralty Centre |
C/20 |
Tunnel Construction |
420m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Far East Finance Centre |
C/21 |
Tunnel Construction |
360m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Lippo Centre |
C/22 |
Tunnel Construction |
460m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Citibank Plaza |
C/23 |
Tunnel Construction |
680m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Bank of China Tower |
C/24 |
Tunnel Construction |
550m |
Moderate |
N/A |
Medium |
Moderate to Slight Negative |
N/A |
Fairmont House |
C/25 |
Tunnel Construction |
460m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Bank of America Tower |
C/26 |
Tunnel Construction |
340m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Hutchison House |
C/27 |
Tunnel Construction |
330m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Cheung Kong Centre |
C/28 |
Tunnel Construction |
570m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
PLA Forces Hong Kong Building |
G/IC/29 |
Tunnel Construction |
160m |
High |
N/A |
Medium |
Substantial to Moderate
Negative |
N/A |
Furama Hotel |
H/31 |
Tunnel Construction |
320m |
Moderate |
N/A |
High |
Substantial to Moderate Negative |
N/A |
Ritz Carlton Hotel |
H/32 |
Tunnel Construction |
320m |
Moderate |
N/A |
High |
Substantial to Moderate Negative |
N/A |
Hong Kong Club Building |
C/33 |
Tunnel Construction |
320m |
Moderate |
N/A |
Medium |
Moderate to Slight Negative |
N/A |
Old Bank of China Building |
C/34 |
Tunnel Construction |
530m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Hong Kong and Shanghai
Bank |
C/35 |
Tunnel Construction |
550m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Standard Chartered Bank |
C/36 |
Tunnel Construction |
570m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Prince’s Building |
C/37 |
Tunnel Construction |
480m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Mandarin Hotel |
H/38 |
Tunnel Construction |
400m |
Moderate |
N/A |
High |
Substantial to Moderate Negative |
N/A |
St George’s Building |
C/39 |
Tunnel Construction |
410m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Swire House |
C/40 |
Tunnel Construction |
430m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Jardine House |
C/41 |
Tunnel Construction |
320m |
High |
N/A |
Medium |
Substantial to Moderate Negative |
N/A |
World Wide House |
C/42 |
Tunnel Construction |
450m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Exchange Square I and II |
C/43 |
Tunnel Construction |
300m |
High |
N/A |
Medium |
Substantial to Moderate Negative |
N/A |
Exchange Square III |
C/44 |
Tunnel Construction |
340m |
Moderate |
N/A |
Medium |
Moderate to Slight Negative |
N/A |
One International Finance
Centre |
C/45 |
Tunnel Construction |
360m |
Moderate |
N/A |
Medium |
Moderate to Slight Negative |
N/A |
Mega Tower (approved
proposal) |
C/46 |
Tunnel Construction |
100m |
N/A |
N/A |
Medium |
N/A |
N/A |
City Hall and Garden |
G/IC47 |
Tunnel Construction |
200m |
Moderate |
N/A |
High |
Substantial to Moderate Negative |
N/A |
Primary VSRs- Transport
Corridors |
||||||||
Expo Drive |
T1 |
Tunnel Construction |
250m |
Moderate |
N/A |
Medium |
Moderate to Slight
Negative |
N/A |
Convention Avenue |
T2 |
Tunnel Construction |
250m |
Moderate |
N/A |
Medium |
Moderate to Slight Negative |
N/A |
Fenwick Pier Street |
T3 |
Tunnel Construction |
220m |
High |
N/A |
Medium |
Substantial to Moderate Negative |
N/A |
Fenwick Pier Street
flyover and pedestrian footbridge |
T4 |
Tunnel Construction |
330m |
High |
N/A |
Medium |
Substantial to Moderate
Negative |
N/A |
Lung Wui Road |
T5 |
Tunnel Construction |
140m |
High |
N/A |
Medium |
Substantial to Moderate
Negative |
N/A |
Tim Mei Avenue |
T6 |
Tunnel Construction |
140m |
High |
N/A |
Medium |
Substantial to Moderate
Negative |
N/A |
Tim Wa Avenue |
T7 |
Tunnel Construction |
140m |
High |
N/A |
Medium |
Substantial to Moderate
Negative |
N/A |
Connaught Road/ Harcourt
Road |
T8 |
Tunnel Construction |
300m |
Moderate |
N/A |
Medium |
Moderate to Slight
Negative |
N/A |
Edinburgh Place |
T9 |
Tunnel Construction |
220m |
High |
N/A |
Medium |
Substantial to Moderate
Negative |
N/A |
Connaught Place |
T10 |
Tunnel Construction |
250m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
New Ferry Piers access
road and pedestrian promenade (Man Yiu Street) |
T11 |
Tunnel Construction |
40m |
High |
N/A |
Medium |
Substantial to Moderate
Negative |
N/A |
|
||||||||
Harcourt Garden |
O1 |
Tunnel Construction |
430m |
Low |
N/A |
High |
Moderate to Slight
Negative |
N/A |
Statue Square |
O2 |
Tunnel Construction |
360m |
Low |
N/A |
High |
Moderate to Slight
Negative |
N/A |
Victoria Harbour |
M1 |
Tunnel Construction |
30m |
High |
N/A |
High |
Very Substantial to
Substantical |
N/A |
Secondary VSRs and Kowloon
Peninsula |
||||||||
TST promenade areas adjacent to clock tower, Star Ferry Pier, HK
Cultural Centre, and HK Museum of Art |
|
Tunnel Construction |
2KM |
Low |
N/A |
High |
Moderate to Slight
Negative |
N/A |
Regent Hotel, Sheraton
Hotel, New World Centre, and Star House |
|
Tunnel Construction |
2KM |
Low |
N/A |
High |
Moderate to Slight
Negative |
N/A |
Star Ferries travelling
to/from Central to Tsim Sha Tsui |
M1 |
Tunnel Construction |
0-2KM |
Moderate |
N/A |
Medium |
Moderate to Slight
Negative |
N/A |
Star Ferries travelling to/from
Wan Chai to Tsim Sha Tsui |
M1 |
Tunnel Construction |
1-2KM |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Additional marine traffic
within Victoria Harbour including pleasure craft |
M1 |
Tunnel Construction |
0-2KM |
Moderate |
N/A |
Medium |
Moderate to Slight Negative |
N/A |
Victoria Peak/Mount Austin Road |
R/2 |
Tunnel Construction |
3.5KM |
Low |
N/A |
High |
Moderate to Slight
Negative |
N/A |
The Peak Tower |
C/3 |
Tunnel Construction |
3KM |
Low |
N/A |
High |
Moderate to Slight
Negative |
N/A |
Mount Gough |
R/4 |
Tunnel Construction |
1.7KM |
Low |
N/A |
High |
Moderate to Slight
Negative |
N/A |
Magazine Gap Road |
R/5 |
Tunnel Construction |
1.5KM |
Low |
N/A |
High |
Moderate to Slight
Negative |
N/A |
Robinson Road/ Bowen Road
corridor |
R/6 |
Tunnel Construction |
1KM |
Low |
N/A |
High |
Moderate to Slight
Negative |
N/A |
Hopewell Centre |
C/7 |
Tunnel Construction |
0.7KM |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Hong Kong Park |
O/8 |
Tunnel Construction |
0.3KM |
Low |
N/A |
High |
Moderate to Slight
Negative |
N/A |
Key : Magnitude of
Impact = Negligible, Low, Moderate or High
Receiver Sensitivity = Low, Medium or High
Impact
Significance Thresholds = Negligible, Very Slight, Slight, Moderate,
Substantial or Very Substantial (Positive or Negative)
Types of Key
Visually Sensitive Receivers (VSRs = R – Residential
T - Transport Related
C – Commercial
O - Open Space
M - Marine Traffic
G/IC - Government, Institution, Community
These follow conclusions and recommendations for residual landscape and visual impacts associated with the Central-Wan Chai Bypass Tunnel (Designated Project 3):
Landscape Impacts
Residual landscape impacts for Central Wan Chai Bypass Tunnel are indicated in Table 14.5. Construction stage impacts will be associated with the implementation of a cut and cover tunnel located within partially or wholly completed reclamation (Designated Project 1). The landscape sensitivity of adjacent areas is lowered by its proximity to the reclamation works. Within this context, landscape impact characteristics are considered moderate to slight negative in the construction stage.
The operation stage landscape impact assessment of the Central Wan Chai Bypass Tunnel is not undertaken by this study. The project proponent for the Central-Wan Chai Bypass Project has, however, advised that no above ground structures will be needed for the project within the CRIII Study Area. Operation Stage landscape impacts are therefore considered to be negligible.
Visual Impacts
Residual visual impacts for Central Wan Chai Bypass Tunnel are indicated in Table 14.10. The sensitivity of VSRs to the development is reduced by their proximity to the reclamation works within which the tunnel is located. In this context, visual impact characteristics are considered generally moderate to very slight negative. There will, however, be VSRs who are deemed more sensitive due to their close proximity to the construction works and the unobstructed views to the development which this affords. Higher construction stage impacts, of a substantial to moderate negative nature, will be associated with VSRs in the following locations:
·
PLA Forces Hong Kong Building;
·
Edinburgh Place;
·
Mandarin Hotel;
·
City Hall and garden;
·
Citic Tower;
·
Lung Wui Road;
·
Victoria Harbour; and
·
Man Yiu Street.
The operation stage visual impact assessment of the Central Wan Chai Bypass Tunnel is not undertaken by this study. The project proponent for the Central-Wan Chai Bypass Project has, however, advised that no above ground structures will be needed for the project within the CRIII Study Area. Operation Stage visual impacts are therefore considered to be negligible.
Conclusion
In concluding the assessment of landscape and visual impacts for the Central-Wan Chai Bypass Tunnel, it is necessary to balance the findings of the construction stage impact assessment with the knowledge that, during the operation stage as advised by the project proponent for the project, no landscape and visual impacts within the CRIII area will be associated with this development. It is considered, therefore, that residual landscape and visual impacts attributable to Designated Project 3 are acceptable with mitigation measures as described in category (c) of Annex 10 of the Technical Memorandum Environmental Impact Assessment Process. There will be some adverse effects, but these can be eliminated, reduced or offset to a large extent by specific measures.
Only the construction phase impacts for this designated project will be considered as only the construction works are entrusted to the CRIII project. The operation phase impacts for the protection works are assessed as insignificant as the works are totally below ground. These impacts for the NIL are being undertaken by MTRC under a separate EIA Study. A layout plan and cross section for Designated Project 4 is indicated in the previous Figure 14.12.
It should be noted that the works are scheduled for completion just after the reclamation. It is predicted, therefore, that the construction works will be viewed within the context of the reclamation construction works. Thus the magnitude of change to existing views will be lower. This may serve to reduce the magnitude of the impacts attributable to the protection works.
Key VSRs for the Schedule 3 project as a whole are indicated in the previous Figure 14.19. It is considered that VSRs in the following locations will be most sensitive to the construction of the North Island Line Protection Works within CRIII:
·
Citic Tower;
·
PLA Forces Hong Kong Building;
·
Lung Wui Avenue; and
·
Victoria Harbour.
The sources of construction stage visual impacts attributable to the North Island Line Protection Works within CRIII will include:
·
temporary site areas for storage, plant,
cabins and associated site equipment;
·
construction traffic;
·
temporary site access areas, site cabins and
heavy machinery; and
·
after dark lighting and welding.
Visual mitigation measures should include:
·
sensitively designed site hoarding to help
screen views to the tunnel construction works;
·
advanced planting of trees and shrubs where
practicable;
·
operational time restrictions to limit
after-dark welding and lighting;
·
temporary screen planting of shrubs and trees
on mounded land to the periphery of the reclamation; and
·
hydroseeding to areas of land which become
unused for long periods during the construction period.
Residual visual impacts (i.e. impacts which remain after mitigation measures have been implemented) at the construction stage for North Island Line Protection Works within CRIII are indicated in Table 14.11.
Table 14.11 : Residual Visual Impacts from Designated Project 4 - North Island Line Protection Works within CRIII
Location of Key
Visually Sensitive Receivers (VSRs) |
Type of VSR/ ID
no. (Refer to Figure 14.19) |
Primary Source
of Impact |
Min. Distance
between VSR and Study Area |
Magnitude of
Change |
Receiver
Sensitivity |
Impact
Characteristic during Construction Phase after Implementation of Mitigation
Measures |
Impact
Characteristic during Operation Phase After
Implementation of Mitigation Measures |
|
Primary VSRs
(Development) |
|
|
|
Construction |
Operation |
|
|
|
Hong Kong Convention and
Exhibition Centre |
GI/C/1 |
Railway Station Structural Envelope
& Tunnel Construction |
380m |
Moderate |
N/A |
Medium |
Moderate to Slight Negative |
N/A |
Grand Hyatt Hotel |
H/2 |
Railway Station Structural Envelope
& Tunnel Construction |
380m |
Low |
N/A |
High |
Moderate to Slight Negative |
N/A |
Wan Chai Tower |
G/IC/3 |
Railway Station Structural Envelope
& Tunnel Construction |
430m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Revenue Tower |
G/IC/4 |
Railway Station Structural Envelope
& Tunnel Construction |
400m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Shui On Centre |
C/5 |
Railway Station Structural Envelope
& Tunnel Construction |
350m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Telecom House Hong Kong Arts Centre Harbour View International
House |
C & G/IC/6 |
Railway Station Structural Envelope
& Tunnel Construction |
330m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Fleet House Harcourt House |
C/7 |
Railway Station Structural Envelope
& Tunnel Construction |
360m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Chung Nam Building |
C/8 |
Railway Station Structural Envelope
& Tunnel Construction |
400m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Asian House |
C/9 |
Railway Station Structural Envelope
& Tunnel Construction |
420m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Hong Kong Police Force
Headquarters |
G/IC/10 |
Railway Station Structural Envelope
& Tunnel Construction |
350m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Citic Tower |
C/11 |
Railway Station Structural Envelope
& Tunnel Construction |
190m |
High |
N/A |
Medium |
Substantial to Moderate Negative |
N/A |
Paget House |
C/12 |
Railway Station Structural Envelope
& Tunnel Construction |
580m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Marriott Hotel |
H/13 |
Railway Station Structural Envelope
& Tunnel Construction |
560m |
Low |
N/A |
High |
Moderate to Slight Negative |
N/A |
Conrad Hotel |
H/14 |
Railway Station Structural Envelope
& Tunnel Construction |
650m |
Low |
N/A |
High |
Moderate to Slight Negative |
N/A |
One Pacific Place |
C/15 |
Railway Station Structural Envelope
& Tunnel Construction |
550m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Two Pacific Place/Island
Shangri-La Hotel |
C/H/16 |
Railway Station Structural Envelope
& Tunnel Construction |
630m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
United Centre |
C/17 |
Railway Station Structural Envelope
& Tunnel Construction |
450m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Queensway Government
Offices |
G/IC/18 |
Railway Station Structural Envelope
& Tunnel Construction |
580m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
The Supreme Court |
G/IC/19 |
Railway Station Structural Envelope
& Tunnel Construction |
500m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Admiralty Centre |
C/20 |
Railway Station Structural Envelope
& Tunnel Construction |
350m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Far East Finance Centre |
C/21 |
Railway Station Structural Envelope
& Tunnel Construction |
300m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Lippo Centre |
C/22 |
Railway Station Structural Envelope
& Tunnel Construction |
370m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Citibank Plaza |
C/23 |
Railway Station Structural
Envelope & Tunnel Construction |
650m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Bank of China Tower |
C/24 |
Railway Station Structural Envelope
& Tunnel Construction |
500m |
Moderate |
N/A |
Medium |
Moderate to Slight Negative |
N/A |
Fairmont House |
C/25 |
Railway Station Structural Envelope
& Tunnel Construction |
380m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Bank of America Tower |
C/26 |
Railway Station Structural Envelope
& Tunnel Construction |
270m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Hutchison House |
C/27 |
Railway Station Structural Envelope
& Tunnel Construction |
280m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Cheung Kong Centre |
C/28 |
Railway Station Structural Envelope
& Tunnel Construction |
570m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
PLA Forces Hong Kong Building |
G/IC/29 |
Railway Station Structural Envelope
& Tunnel Construction |
90m |
Moderate |
N/A |
Medium |
Moderate to Slight
Negative |
N/A |
Furama Hotel |
H/31 |
Railway Station Structural Envelope
& Tunnel Construction |
260m |
Moderate |
N/A |
High |
Substantial to Moderate Negative |
N/A |
Ritz Carlton Hotel |
H/32 |
Railway Station Structural Envelope
& Tunnel Construction |
300m |
Low |
N/A |
High |
Moderate to Slight Negative |
N/A |
Hong Kong Club Building |
C/33 |
Railway Station Structural Envelope
& Tunnel Construction |
350m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Old Bank of China Building |
C/34 |
Railway Station Structural Envelope
& Tunnel Construction |
550m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Hong Kong and Shanghai
Bank |
C/35 |
Railway Station Structural Envelope
& Tunnel Construction |
580m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Standard Chartered Bank |
C/36 |
Railway Station Structural
Envelope & Tunnel Construction |
610m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Prince’s Building |
C/37 |
Railway Station Structural Envelope
& Tunnel Construction |
550m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Mandarin Hotel |
H/38 |
Railway Station Structural Envelope
& Tunnel Construction |
500m |
Low |
N/A |
High |
Moderate to Slight Negative |
N/A |
St George’s Building |
C/39 |
Railway Station Structural Envelope
& Tunnel Construction |
560m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Swire House |
C/40 |
Railway Station Structural Envelope
& Tunnel Construction |
600m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Jardine House |
C/41 |
Railway Station Structural Envelope
& Tunnel Construction |
520m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
World Wide House |
C/42 |
Railway Station Structural Envelope
& Tunnel Construction |
700m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Exchange Square I and II |
C/43 |
Railway Station Structural Envelope
& Tunnel Construction |
600m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Exchange Square III |
C/44 |
Railway Station Structural Envelope
& Tunnel Construction |
750m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
One International Finance
Centre |
C/45 |
Railway Station Structural Envelope
& Tunnel Construction |
800m |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Mega Tower (approved
proposal) |
C/46 |
Railway Station Structural Envelope
& Tunnel Construction |
580m |
N/A |
N/A |
Medium |
N/A |
N/A |
City Hall and Garden |
G/ IC47 |
Railway Station Structural Envelope
& Tunnel Construction |
200m |
moderate |
N/A |
high |
Substantial to Moderate Negative |
N/A |
Primary VSRs – Transport
Corridors |
||||||||
Expo Drive |
T1 |
Railway Station Structural Envelope
& Tunnel Construction |
300m |
Moderate |
N/A |
Medium |
Moderate to Slight
Negative |
N/A |
Convention Avenue |
T2 |
Railway Station Structural Envelope
& Tunnel Construction |
300m |
Moderate |
N/A |
Medium |
Moderate to Slight
Negative |
N/A |
Fenwick Pier Street |
T3 |
Railway Station Structural Envelope
& Tunnel Construction |
150m |
Moderate |
N/A |
Medium |
Moderate to Slight Negative |
N/A |
Fenwick Pier Street
flyover and pedestrian footbridge |
T4 |
Railway Station Structural Envelope
& Tunnel Construction |
240m |
Moderate |
N/A |
Medium |
Moderate to Slight
Negative |
N/A |
Lung Wui Road |
T5 |
Railway Station Structural Envelope
& Tunnel Construction |
0m |
High |
N/A |
Medium |
Substantial to Moderate
Negative |
N/A |
Tim Mei Avenue |
T6 |
Railway Station Structural Envelope
& Tunnel Construction |
0m |
High |
N/A |
Medium |
Substantial to Moderate
Negative |
N/A |
Tim Wa Avenue |
T7 |
Railway Station Structural Envelope
& Tunnel Construction |
0m |
High |
N/A |
Medium |
Substantial to Moderate
Negative |
N/A |
Connaught Road/ Harcourt
Road |
T8 |
Railway Station Structural Envelope
& Tunnel Construction |
170m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Edinburgh Place |
T9 |
Railway Station Structural Envelope
& Tunnel Construction |
200m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
Connaught Place |
T10 |
Railway Station Structural Envelope
& Tunnel Construction |
500m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
New Ferry Piers access road
and pedestrian promenade (Man Yiu Street) |
T11 |
Railway Station Structural Envelope
& Tunnel Construction |
560m |
Low |
N/A |
Medium |
Slight to Very Slight
Negative |
N/A |
|
||||||||
Harcourt Garden |
O1 |
Railway Station Structural
Envelope & Tunnel Construction |
350m |
Low |
N/A |
High |
Moderate to Slight
Negative |
N/A |
Statue Square |
O2 |
Railway Station Structural Envelope
& Tunnel Construction |
460m |
Low |
N/A |
High |
Moderate to Slight Negative |
N/A |
Victoria Harbour |
M1 |
Railway Station Structural Envelope
& Tunnel Construction |
120m |
High |
N/A |
High |
Very Substantial to
Substantial Negative |
N/A |
Secondary VSRs and Kowloon
Peninsula |
||||||||
TST promenade areas adjacent to clock tower, Star Ferry Pier, HK
Cultural Centre, and HK Museum of Art |
|
Railway Station Structural Envelope
& Tunnel Construction |
2KM |
Low |
N/A |
High |
Moderate to Slight
Negative |
N/A |
Regent Hotel, Sheraton
Hotel, New World Centre, and Star House |
|
Railway Station Structural Envelope
& Tunnel Construction |
2KM |
Low |
N/A |
High |
Moderate to Slight Negative |
N/A |
Star Ferries travelling
to/from Central to Tsim Sha Tsui |
M1 |
Railway Station Structural Envelope
& Tunnel Construction |
0-2KM |
Moderate |
N/A |
Medium |
Moderate to Slight Negative |
N/A |
Star Ferries travelling
to/from Wan Chai to Tsim Sha Tsui |
M1 |
Railway Station Structural Envelope
& Tunnel Construction |
1-2KM |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Additional marine traffic
within Victoria Harbour including pleasure craft |
M1 |
Railway Station Structural Envelope
& Tunnel Construction |
0-2KM |
Moderate |
N/A |
Medium |
Moderate to Slight Negative |
N/A |
Victoria Peak/Mount Austin Road |
R/2 |
Railway Station Structural Envelope
& Tunnel Construction |
3.5KM |
Low |
N/A |
High |
Moderate to Slight
Negative |
N/A |
The Peak Tower |
C/3 |
Railway Station Structural Envelope
& Tunnel Construction |
3KM |
Low |
N/A |
High |
Moderate to Slight Negative |
N/A |
Mount Gough |
R/4 |
Railway Station Structural Envelope
& Tunnel Construction |
1.7KM |
Low |
N/A |
High |
Moderate to Slight Negative |
N/A |
Magazine Gap Road |
R/5 |
Railway Station Structural Envelope
& Tunnel Construction |
1.5KM |
Low |
N/A |
High |
Moderate to Slight Negative |
N/A |
Robinson Road/ Bowen Road
corridor |
R/6 |
Railway Station Structural Envelope
& Tunnel Construction |
1KM |
Low |
N/A |
High |
Moderate to Slight Negative |
N/A |
Hopewell Centre |
C/7 |
Railway Station Structural Envelope
& Tunnel Construction |
0.7KM |
Low |
N/A |
Medium |
Slight to Very Slight Negative |
N/A |
Hong Kong Park |
O/8 |
Railway Station Structural Envelope
& Tunnel Construction |
0.3KM |
Low |
N/A |
High |
Moderate to Slight Negative |
N/A |
Key : Magnitude of
Impact = Negligible, Low, Moderate or High
Receiver
Sensitivity = Low, Medium or High
Impact
Significance Thresholds = Negligible, Very Slight, Slight, Moderate,
Substantial or Very Substantial (Positive or Negative)
Types of Key
Visually Sensitive Receivers (VSRs = R – Residential
T - Transport Related
C – Commercial
O - Open Space
M - Marine Traffic
G/IC - Government, Institution, Community
These follow conclusions and recommendations for residual landscape and visual impacts associated with the North Island Line Protection Works within CRIII (Designated Project 4):
Landscape Impacts
Residual landscape impacts from the North Island Line Protection Works within CRIII are indicated in Table 14.6. Construction stage impacts will be associated with the implementation of the advanced station structural envelope works and the cut and cover tunnel located within partially or wholly completed reclamation (Designated Project 1). The landscape sensitivity of adjacent areas is lowered by its proximity to the reclamation works. Within this context, landscape impact characteristics are considered moderate to slight negative in the construction stage.
Although the operation stage landscape impact assessment of the North Island Line Protection Works within CRIII is not undertaken by this study, the impacts are considered insignificant as the NIL works are situated totally below ground.
Visual Impacts
Residual visual impacts from the North Island Line Protection Works within CRIII are indicated in Table 14.11. The sensitivity of VSRs to the development is reduced by their proximity to the reclamation works within which the works are located. In this context, visual impact characteristics are considered generally moderate to very slight negative. There will, however, be VSRs who are deemed more sensitive due to their close proximity to the construction works and the unobstructed views to the development which this affords. Higher construction stage impacts, of a substantial to moderate negative nature, will be associated with VSRs in the following locations:
·
Furama Hotel;
·
City Hall and garden;
·
Citic Tower;
·
Tim Wa Avenue;
·
Lung Wui Road;
·
Tim Mei Avenue; and
·
Victoria Harbour.
Although the operation stage visual impact assessment of the North Island Line Protection Works within CRIII is currently being undertaken by MTRC, the impacts are considered insignificant as the NIL works are situated totally below ground.
Conclusion
In concluding the assessment of landscape and visual impacts for the North Island Line Protection Works within CRIII, it is necessary to balance the findings of this construction stage landscape and visual impact assessment with the operation stage assessment being undertaken by MTRC. The latter assessment is presently unavailable, however, as indicated above, for both the landscape and visual impacts, the effects of the NIL protection works on the surrounding areas are considered insignificant as the tunnel works are located below ground level.
·
building heights are stepped to preserve a
20% building-free area to protect the Victoria Peak ridgeline as recommended in
the Metroplan;
·
maximum building heights will decrease from
the inland towards the waterfront in a north-south alignment;
·
building height contours will decrease from a
maximum 180mPD at the former Tamar Basin to 8mPD (plant rooms, etc.) for
waterfront development;
·
a maximum building height at 30mPD will be
maintained at sites flanking the northern section of the open space corridors;
·
a stepped east-west height principle will
achieve a distinctive profile allowing flexibility for an interesting built
form;
·
comprehensive urban design parameters will be
adopted to achieve a visually coherent palette of paving materials, colours,
street furniture, signage and planting; and
·
generally, any new development will contain
finishes and fixtures of a higher quality than exist in the current
environment.
·
Tsim Sha Tsui Cultural Centre / Star Ferry
Pier;
·
Victoria Peak;
·
The Peak Tower;
·
Mount Gough;
·
Magazine Gap Road; and
·
Robinson Road/ Bowen Road.
·
development within the study area - Citic
Tower and Central Barracks;
·
development to the east of the study area
including the Grand Hyatt Hotel and the Hong Kong Convention and Exhibition
Centre;
·
development to the south of the study area
including Connaught Road
Central/Harcourt Road and Queensway Road corridors;
·
development to the west of the study area
including Exchange Square, One International Finance Centre and the proposed
No. 2 IFC;
·
development located on the southern tip of
the Kowloon Peninsula including the Regent Hotel, Sheraton Hotel, New World
Centre and Star House.
·
promenade areas adjacent to clock tower, Star
Ferry Pier, HK Cultural Centre and HK Museum of Art at Tsim Sha Tsui
waterfront;
·
Star Ferries travelling to/from Central to
Tsim Sha Tsui;
·
Star Ferries travelling to/from Wan Chai to
Tsim Sha Tsui; and
·
additional marine traffic within Victoria
Harbour including pleasure craft.
·
the physical process of site clearance and
demolition of key developments, namely City Hall (High Block only), General
Post Office, Star Ferry Pier and Queens Pier,
·
the construction works of principal
infrastructure development, namely reclamation, Primary, Distributor and
District Distributor Roads, the Central-Wan Chai Bypass Tunnel, the Hong Kong
Station Overrun Tunnel and the North Island Line Protection Works within CRIII;
·
the construction works of key developments,
namely CDA Groundscraper, Festival Market, Central Government Complex, parks,
plazas, marine basin, and open space corridors.
·
construction traffic;
·
temporary site access areas, site cabins and heavy
machinery;
·
construction site traffic on the reclamation;
and
·
after dark lighting and welding.
·
the proposed reclamation itself;
·
new transport infrastructure;
·
new low, medium and high-rise development;
and
·
extensive landscaped pedestrian spaces.
·
views of site clearance and demolition of key
developments, namely City Hall (High Block only), General Post Office, Star
Ferry Pier and Queens Pier,
·
views of the construction works of principal
infrastructure development, namely reclamation, Primary, Distributor and
District Distributor Roads, the Central-Wan Chai Bypass Tunnel, the Hong Kong
Station Overrun Tunnel and the North Island Line Protection Works within CRIII;
·
the construction works of key developments,
namely CDA Groundscraper, Festival Market, Central Government Complex, parks,
plazas, marine basin, and open space corridors.
·
views of barges carrying fill, floating
cranes and dredging equipment;
·
loss of views to Victoria Harbour from VSRs
located to the east, south and west of the study area;
·
loss of visual relationship between
Central-Wan Chai waterfront and Victoria Harbour;
·
views of reclamation activity including pipe,
cable, sewer and drainage works;
·
visual glare from welding and site illumination;
·
rotational site traffic, deliveries and
cranes;
·
scaffolding and emergent structures; and
·
increased heavy vehicular traffic within the
Central-Wan Chai Districts.
·
Jardine House – demolition of General Post
Office and construction of Groundscraper (50mPD);
·
Exchange Square I and II - demolition of
General Post Office and construction of Groundscraper (50mPD);
·
Furama Hotel – demolition of City Hall and
construction of replacement development (50mPD);
·
Ritz Carlton Hotel – demolition of City Hall
and construction of replacement development (50mPD);
·
Hong Kong Club – demolition of City Hall and construction of replacement
development (50mPD);
·
PLA Forces Hong Kong Building – reclamation
and Festival Market (25mPD);
·
Far East Finance Centre – construction of
Central Government Offices (180mPD);
·
Admiralty Centre – construction of Central
Government Complex (CGC) (180mPD);
·
Citic Tower – reclamation and construction of
CGC, Red Cross Headquarters Development and additional development to the north
(80-180mPD);
·
Hong Kong Police Force, May House –
construction of CGC and additional development (80-180mPD);
·
Telecom House, Hong Kong Arts Centre, Harbour
View International House – reclamation and construction of waterside
development (15-25mPD);
·
Grand Hyatt Hotel – reclamation and
construction of waterside development (15-25mPD); and
·
Hong Kong Convention and Exhibition Centre
(HKCEC) – reclamation and construction of waterside development (15-25mPD).
·
Mandarin Oriental Hotel;
·
Hong Kong and Shanghai Bank;
·
Legislative Council Building; and
·
Hong Kong Club Building.
·
Harcourt Road;
·
Tim Mei Avenue;
·
Tim Wa Avenue;
·
Lung Wui Road;
·
Edinburgh Place;
·
Connaught Place;
·
Man Yiu Street;
·
Chater Road; and
·
Jackson Road.
·
development located on the southern tip of
the Kowloon Peninsula including the Regent Hotel, Sheraton Hotel, New World
Centre and Star House.
·
promenade areas adjacent to clock tower, Star
Ferry Pier, HK Cultural Centre and HK Museum of Art at Tsim Sha Tsui
waterfront;
·
Star Ferries travelling to/from Central to
Tsim Sha Tsui;
·
Star Ferries travelling to/from Wan Chai to
Tsim Sha Tsui; and
·
additional marine traffic within Victoria
Harbour including pleasure craft.
·
loss of or obstruction of views of Victoria
Harbour from north and east facing VSRs within lower 16 floors of Jardine House
and Exchange Square I and II due to 50mPD height ‘Groundscraper’
development. Existing general post
office height is 15mPD. Views of the Harbour will therefore be lost to an
additional 12 floors of VSRs in Jardine House and Exchange Square I and II,
resulting in negative visual impacts;
·
loss of or obstruction to views of Victoria
Harbour from north facing VSRs within lower 13 floors of the Hong Kong Club
Building, Ritz Carlton Hotel and Furama Hotel due to 50mPD height redevelopment
of the City Hall. Existing City Hall
height is 12mPD (39mPD tower is located north of Cenotaph). Views of the Harbour will therefore be lost
to an additional 8 floors of VSRs in the Hong Kong Club, Ritz Carlton Hotel and
Furama Hotel, resulting in negative visual impacts;
·
loss of or obstruction to views of Victoria
Harbour from north facing VSRs within all floors of Far East Finance Centre and
Admiralty Centre Towers I and II due to the 180mPD high Central Government
Complex, resulting in negative visual impacts.
Existing views are unobstructed by the undeveloped Tamar site. Some VSRs will retain views to Victoria
Harbour subject to the proposed CGC layout design;
·
loss of views to Victoria Harbour from north
facing VSRs within all floors of lower residential blocks of Central Barracks
(e.g. Blake Block and Amethyst Block) due to 25mPD height Festival Market
development, resulting in negative visual impacts. Views are currently unobstructed. Views of Victoria Harbour from VSRs within the main Prince of
Wales Building will be unobstructed and positive visual impacts will be associated
with the new Waterfront Promenade and Civic Plaza;
·
loss of or obstruction to views of Victoria
Harbour from north facing VSRs within lower 20 floors of Citic Tower due to
80mPD height development to the north, resulting in negative visual
impacts. Views to Victoria Harbour are
currently unobstructed;
·
loss of or obstruction to views of Victoria
Harbour from north west facing VSRs within all floors of Hong Kong Police Headquarters at May House
due to 80-130mPD height development to the east, resulting in negative visual
impacts. Views north from the Police HQ
will remain largely unchanged, though improvements will be associated with the
landscape treatment to the Waterfront Promenade and Marine Basin, resulting in
positive visual impacts (subject to the final Wanchai Development Phase II
project); and
·
improved quality of views over the proposed
Marine Basin and Waterfront Promenade from north facing VSRs within all floors
of the Grand Hyatt Hotel, Shui On
Centre, Telecom House, Hong Kong Arts Centre, and Harbour View International
House, resulting in positive visual impacts.
Low level development along the new waterfront is not expected to
obstruct Harbour views from these developments.
·
Mandarin Oriental Hotel;
·
Hong Kong and Shanghai Bank;
·
Legislative Council Building; and
·
Hong Kong Club Building.
·
Harcourt Road;
·
Tim Mei Avenue;
·
Tim Wa Avenue;
·
Lung Wui Road;
·
Edinburgh Place;
·
Connaught Place;
·
Man Yiu Street; and
·
Chater Road;
·
development located on the southern tip of
the Kowloon Peninsula including the Regent Hotel, Sheraton Hotel, New World
Centre and Star House.
·
promenade areas adjacent to clock tower, Star
Ferry Pier, HK Cultural Centre and HK Museum of Art at Tsim Sha Tsui waterfront;
·
Star Ferries travelling to/from Central to
Tsim Sha Tsui;
·
Star Ferries travelling to/from Wan Chai to
Tsim Sha Tsui; and
·
additional marine traffic within Victoria
Harbour including pleasure craft.
·
sensitively designed site hoarding to help
screen views to the construction works of principal infrastructure development,
namely reclamation, Primary, Distributor and District Distributor Roads, the
Central-Wan Chai Bypass Tunnel, the Hong Kong Station Overrun Tunnel and the
North Island Line Protection Works within CRIII;
·
temporary screen planting of shrubs and trees
on mounded land to the periphery of the reclamation where practicable; and
·
operational time restrictions to limit
after-dark welding and lighting.
·
building heights will be stepped where
practicable to preserve a 20% building-free backdrop to protect the Victoria
Peak ridgeline as recommended in the Metroplan (refer to Figure 14.20);
·
maximum building heights will decrease from
the inland towards the waterfront in a north-south alignment (refer to Figure
14.20);
·
building height contours will decrease from a
maximum 180mPD at the former Tamar Basin to 8mPD (plant rooms, etc.) for
waterfront development ensuring that the proposed CGC development does not
compromise the Peak Ridgeline Guidelines(refer to Figure 14.20);
·
a maximum building height at 30mPD will be maintained
at sites flanking the northern section of the open space corridors(refer to
Figure 14.20);
·
a stepped east-west height principle will
achieve a wave-like profile allowing flexibility for an interesting built form;
·
comprehensive urban design parameters will be
adopted to achieve a visually coherent palette of paving materials, colours,
street furniture, signage and planting;
·
generally, any new development will contain
finishes and fixtures of a higher quality than exist in the current
environment;
·
implementation of the Waterfront Promenade,
Statue Square Corridor, Historic Corridor, Civic Corridor, Arts and
Entertainment Corridor (under WDII), Streetscape Network, Landscape Decks, and
Supplementary Landscape Spaces. These
are illustrated through the photomontages presented as Figure 14.21 - 14.27.
·
provision of a legible, integrated pedestrian
circulation system linking major activity nodes, reinforcing links with
adjoining areas, and providing an international quality hard and soft landscape
treatment;
·
provision of an integrated network of local
and regional open spaces for passive and active recreation;
·
overall enhancement of the visual amenity and
character of Victoria Harbour;
·
preservation of selected architectural
features, such as the “Star” Ferry Pier clock;
·
preservation of existing significant
vegetation, principally the two Banyan Trees flanking the Tamar Site;
·
ensuring that the City Hall Complex and
Memorial Garden maintain a visual ‘presence’ in the landscape framework;
·
semi-mature avenue tree planting to road
boundaries and planting to elevated structures;
·
an international quality of hard and soft
landscape finishes;
·
sensitive design and profile of the seawall
to minimise visual impacts associated with the reclamation; and
·
international quality of site furniture
including lighting, seating, litter bins and balustrades, which adhere to an
overall CRIII development palette.
·
loss of or obstruction to views of Victoria Harbour
from north and east facing VSRs within lower 16 floors of Jardine House and
Exchange Square I and II due to 65mPD height ‘Groundscraper’ development.
·
loss of or obstruction to views of Victoria
Harbour from north facing VSRs within lower 13 floors of the Hong Kong Club
Building, Ritz Carlton Hotel and Furama Hotel due to 50mPD height redevelopment
of City Hall.
·
loss of or obstruction to views of Victoria
Harbour from north facing VSRs within all floors of Far East Finance Centre and
Admiralty Centre Towers I and II due to 180mPD height CGC development;
·
loss of views to Victoria Harbour from north
facing VSRs within all floors of lower residential blocks of Central Barracks
(e.g. Blake Block and Amethyst Block) due to 25mPD height Festival Market development;
·
loss of or obstruction to views of Victoria
Harbour from north facing VSRs within lower 20 floors of Citic Tower due to
80mPD height development to the north;
·
loss of or obstruction to views of Victoria
Harbour from north west facing VSRs within all floors of Hong Kong Police Headquarters at May House
due to 80-130mPD height development to the east;
·
improved quality of views over the proposed
Marine Basin and Waterfront Promenade from north facing VSRs within all floors
of the Grand Hyatt Hotel, Shui On
Centre, Telecom House, Hong Kong Arts Centre, and Harbour View International
House, resulting in positive visual impacts.
Low level development along the new waterfront is not expected to
obstruct Harbour views from these developments.
·
Mandarin Oriental Hotel;
·
Grand Hyatt Hotel;
·
Statue Square; and
·
Victoria Harbour.
·
Harcourt Road;
·
Tim Mei Avenue;
·
Tim Wa Avenue;
·
Lung Wui Road;
·
Edinburgh Place;
·
Connaught Place;
·
Man Yiu Street; and
·
Chater Road;
·
development located on the southern tip of
the Kowloon Peninsula including the Regent Hotel, Sheraton Hotel, New World
Centre and Star House.
·
promenade areas adjacent to clock tower, Star
Ferry Pier, HK Cultural Centre and HK Museum of Art at Tsim Sha Tsui
waterfront;
·
Star Ferries travelling to/from Central to
Tsim Sha Tsui;
·
Star Ferries travelling to/from Wan Chai to
Tsim Sha Tsui; and
·
Additional
marine traffic within Victoria Harbour including pleasure craft.
Table 14.12 : Residual Visual Impacts from CRIII (Schedule 3 Project)
Key Visually
Sensitive Receivers (VSRs) |
Type of VSR/ ID
no. (Refer to Figure 14.19) |
Primary Source
of Impact |
Min. Distance
between VSR and Study Area |
Magnitude of
Change |
Receiver
Sensitivity |
Impact
Characteristic during Construction Phase after Implementation of Mitigation
Measures |
Impact
Characteristic during Operation Phase After
Implementation of Mitigation Measures |
|
Primary VSRs
(Development) |
|
|
|
Construction |
Operation |
|
|
|
Hong Kong Convention
and Exhibition Centre |
GI/C/1 |
Reclamation, Proposed Development |
30M |
High |
High |
Medium |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
Grand Hyatt Hotel |
H/2 |
Reclamation, Proposed Development |
80M |
Moderate |
High |
High |
Substantial to Moderate Negative |
Very Substantial to Substantial Positive |
Wan Chai Tower |
G/IC/3 |
Proposed Development |
180M |
Moderate |
High |
Medium |
Moderate to Slight Negative |
Substantial to Moderate Positive |
Revenue Tower |
G/IC/4 |
Proposed Development |
210M |
Moderate |
High |
Medium |
Moderate to Slight Negative |
Substantial to Moderate Positive |
Shui On Centre |
C/5 |
Proposed Development |
150M |
Moderate |
High |
Medium |
Moderate to Slight Negative |
Substantial to Moderate Positive |
Telecom House Hong Kong Arts
Centre Harbour View International
House |
C & G/IC/6 |
Proposed Development |
150M |
Moderate |
High |
Medium |
Moderate to Slight Negative |
Substantial to Moderate Positive |
Fleet House Harcourt House |
C/7 |
Proposed Development |
180M |
Moderate |
Moderate |
Medium |
Moderate to Slight Negative |
Moderate to Slight Positive |
Chung Nam Building |
C/8 |
Proposed Development |
230M |
Low |
Low |
Medium |
Slight to Very Slight Negative |
Slight to Very Slight Positive |
Asian House |
C/9 |
Proposed Development |
280M |
Low |
Low |
Medium |
Slight to Very Slight Negative |
Slight to Very Slight Positive |
Hong Kong Police
Force Headquarters |
G/IC/10 |
Proposed Development |
80M |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Citic Tower |
C/11 |
Reclamation, Proposed Development |
0M |
High |
Low |
Medium |
Substantial to Moderate Negative |
Slight to Very Slight Negative |
Paget House |
C/12 |
Proposed Development |
260M |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Marriott Hotel |
H/13 |
Proposed Development |
210M |
Moderate |
Low |
High |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Conrad Hotel |
H/14 |
Proposed Development |
300M |
Moderate |
Low |
High |
Substantial to Moderate Negative |
Moderate to Slight Negative |
One Pacific Place |
C/15 |
Proposed Development |
180M |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Two Pacific
Place/Island Shangri-La Hotel |
C/H/16 |
Proposed Development |
260M |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
United Centre |
C/17 |
Proposed Development |
90M |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Queensway Government
Offices |
G/IC/18 |
Proposed Development |
220M |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
The Supreme Court |
G/IC/19 |
Proposed Development |
220M |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Admiralty Centre |
C/20 |
Reclamation, Proposed Development |
30M |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Far East Finance
Centre |
C/21 |
Reclamation, Proposed Development |
30M |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Negative |
Lippo Centre |
C/22 |
Proposed Development |
120M |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Citibank Plaza |
C/23 |
Proposed Development |
330M |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Bank of China Tower |
C/24 |
Proposed Development |
230M |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Fairmont House |
C/25 |
Proposed Development |
120M |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Negative |
Bank of America Tower |
C/26 |
Reclamation, Proposed Development |
20M |
High |
Low |
Medium |
Substantial to Moderate Negative |
Slight to Very Slight Positive |
Hutchison House |
C/27 |
Reclamation, Proposed Development |
20M |
High |
Low |
Medium |
Substantial to Moderate Negative |
Slight to Very Slight Positive |
Cheung Kong Centre |
C/28 |
Proposed Development |
250M |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Positive |
PLA Forces Hong Kong Building |
G/IC/29 |
Reclamation, Proposed Development |
0M |
High |
High |
Medium |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
Furama Hotel |
H/31 |
City Hall Demolition, Proposed Development |
20M |
High |
Low |
High |
Very Substantial to Substantial Negative |
Moderate to Slight Positive |
Ritz Carlton Hotel |
H/32 |
City Hall Demolition, Proposed Development |
20M |
High |
Moderate |
High |
Very Substantial to Substantial Negative |
Substantial to Moderate Positive |
Hong Kong Club
Building |
C/33 |
City Hall Demolition, Proposed Development |
20M |
High |
High |
Medium |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
Bank of China
Building |
C/34 |
Proposed Development |
180M |
Low |
Low |
Medium |
Slight to Very Slight Negative |
Slight to Very Slight Positive |
Hong Kong and
Shanghai Bank |
C/35 |
Proposed Development |
160M |
High |
High |
Medium |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
Standard Chartered
Bank |
C/36 |
Proposed Development |
170M |
Moderate |
Moderate |
Medium |
Moderate to Slight Negative |
Moderate to Slight Positive |
Prince’s Building |
C/37 |
Proposed Development |
60M |
High |
High |
Medium |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
Mandarin Hotel |
H/38 |
Proposed Development |
20M |
High |
High |
High |
Very Substantial to Substantial Negative |
Very Substantial to Substantial Positive |
St George’s Building |
C/39 |
Proposed Development |
70M |
Low |
Low |
Medium |
Slight to Very Slight Negative |
Slight to Very Slight Positive |
Swire House |
C/40 |
Proposed Development |
140M |
Low |
Low |
Medium |
Slight to Very Slight Negative |
Slight to Very Slight Positive |
Jardine House |
C/41 |
Post Office Demolition, Proposed Development |
30M |
High |
High |
Medium |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
World Wide House |
C/42 |
Proposed Development |
150M |
Low |
Low |
Medium |
Slight to Very Slight Negative |
Slight to Very Slight Positive |
Exchange Square I and II |
C/43 |
Post Office Demolition, Proposed Development |
20M |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Positive |
Exchange Square III |
C/44 |
Proposed Development |
180M |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Positive |
One International Finance
Centre |
C/45 |
Post Office Demolition, Proposed Development |
250M |
High |
Moderate |
Medium |
Substantial to Moderate Negative |
Moderate to Slight Positive |
Mega Tower (approved
proposal) |
C/46 |
Proposed Development |
20M |
High |
High |
Medium |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
Primary VSRs – Transport Corridors |
||||||||
Expo Drive |
T1 |
Reclamation |
0M |
High |
High |
Medium |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
Convention Avenue |
T2 |
Reclamation |
10M |
High |
High |
Medium |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
Fenwick Pier Street |
T3 |
Reclamation |
0M |
High |
High |
Medium |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
Fenwick Pier Street
flyover and pedestrian footbridge |
T4 |
Reclamation, Proposed Development |
20M |
High |
High |
Medium |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
Lung Wui Road |
T5 |
Reclamation, Proposed Development |
0M |
High |
High |
Medium |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
Tim Mei Avenue |
T6 |
Reclamation, Proposed Development |
0M |
High |
High |
Medium |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
Tim Wa Avenue |
T7 |
Reclamation, Proposed Development |
0M |
High |
High |
Medium |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
Connaught Road/
Harcourt Road |
T8 |
Proposed Development |
0M |
High |
High |
Medium |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
Edinburgh Place |
T9 |
City Hall Demolition, Proposed Development |
0M |
High |
High |
Medium |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
Connaught Place |
T10 |
Post Office Demolition, Proposed Development |
0M |
High |
High |
Medium |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
New Ferry Piers access
road and pedestrian promenade |
T11 |
Reclamation, Proposed Development |
0M |
High |
High |
Medium |
Substantial to Moderate Negative |
Substantial to Moderate Positive |
Primary VSRs – Harbour/Open Space |
||||||||
Harcourt Garden |
O1 |
Proposed Development |
30M |
Medium |
Moderate |
High |
Substantial to Moderate Negative |
Moderate to Slight Positive |
Statue Square |
O2 |
Proposed Development |
0M |
High |
High |
High |
Very Substantial to Substantial Negative |
Very Substantial to Substantial Positive |
Victoria Harbour |
M1 |
Reclamation, Proposed Development |
0M |
High |
High |
High |
Very Substantial to Substantial Negative |
Very Substantial to Substantial Positive |
Secondary VSRs and Kowloon Peninsula |
||||||||
TST promenade areas adjacent to clock tower, Star Ferry Pier, HK
Cultural Centre, and HK Museum of Art |
|
Reclamation, Proposed Development |
2KM |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Regent Hotel,
Sheraton Hotel, New World Centre, and Star House |
|
Reclamation, Proposed Development |
2KM |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Star Ferries
travelling to/from Central to Tsim Sha Tsui |
M1 |
Reclamation, Proposed Development |
0-2KM |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Positive |
Star Ferries
travelling to/from Wan Chai to Tsim Sha Tsui |
M1 |
Reclamation, Proposed Development |
1-2KM |
Low |
Low |
Medium |
Slight to Very Slight Negative |
Slight to Very Slight Positive |
Additional marine
traffic within Victoria Harbour including pleasure craft |
M1 |
Reclamation, Proposed Development |
0-2KM |
Moderate |
Low |
Medium |
Moderate to Slight Negative |
Slight to Very Slight Positive |
Victoria Peak/Mount Austin Road |
R/2 |
Proposed Development |
3.5KM |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
The Peak Tower |
C/3 |
Proposed Development |
3KM |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Mount Gough |
R/4 |
Proposed Development |
1.7KM |
Low |
Negligible |
High |
Moderate to Slight Negative |
Negligible |
Magazine Gap Road |
R/5 |
Proposed Development |
1.5KM |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Robinson Road/ Bowen
Road corridor |
R/6 |
Proposed Development |
1KM |
Low |
Negligible |
Medium |
Slight to Very Slight Negative |
Negligible |
Hopewell Centre |
C/7 |
Proposed Development |
0.7KM |
Low |
Low |
Medium |
Slight to Very Slight Negative |
Slight to Very Slight Positive |
Hong Kong Park |
O/8 |
Proposed Development |
0.3KM |
Low |
Low |
High |
Moderate to Slight Negative |
Moderate to Slight Positive |
Key : Magnitude of
Impact = Negligible, Low, Moderate or High
Receiver
Sensitivity = Low, Medium or High
Impact
Significance Thresholds = Negligible, Very Slight, Slight, Moderate,
Substantial or Very Substantial (Positive or Negative)
Types of Key
Visually Sensitive Receivers (VSRs = R – Residential
T - Transport Related
C – Commercial
O - Open Space
M - Marine Traffic
G/IC - Government, Institution, Community
Table 14.13 :
Landscape Framework - Implementation, Management and Maintenance Agents
- Schedule of Responsibilities
Landscape Element |
Implementation &
Funding |
Management Agent |
Maintenance Agent |
|
Parks |
||||
Promenade (hard and soft landscape) |
To be determined by PLB |
To be determined by PLB |
To be determined by PLB |
|
DOS (hard landscape) |
LCSD |
LCSD |
ArchSD (PSB) |
|
DOS (soft landscape) |
LCSD |
LCSD |
LCSD |
|
LOS (hard landscape) |
LCSD |
LCSD |
ArchSD (PSB) |
|
LOS (soft landscape) |
LCSD |
LCSD |
LCSD |
|
Civic Square |
||||
Hard Landscape |
To be determined by PLB |
To be determined by PLB |
To be determined by PLB |
|
Soft Landscape |
To be determined by PLB |
To be determined by PLB |
To be determined by PLB |
|
Festival Market (hard and soft landscape) |
Private Developer |
Private Developer |
Private Developer |
|
Amenity Areas (soft landscape
only) |
||||
Adjoining Roads |
TDD |
In accordance with WBTC 18/94 |
In accordance with WBTC 18/94 |
|
Seawall and Marine Structures |
TDD |
CED |
CED |
|
Highway Landscape within 5m of Outer Kerb: - (i.e. pavement, central medians,
traffic islands, land between junctions not suitable for other use) |
TDD |
In accordance with WBTC 18/94 |
In accordance with WBTC 18/94 |
|
Notes: Soft
landscape works include – verge and amenity strip planting including grasses;
central median planting; trees in paving; planting in planter beds, tubs and
pots, and existing conserved vegetation.
Maintenance
by ArchSD (PSB) of general areas is subject to funding by Home Affairs Bureau
(HAB).
·
verifying that all selected levels of the
parameters measured by the environmental monitoring programme are within the
agreed limits or levels during project construction;
·
determining and recommending any necessary
remedial measures, for which environmental monitoring forms the basis; and
·
organising and interpreting the environmental
monitoring data to establish the record of change associated with a project.
·
to provide a baseline database of
"ambient", or prevailing background conditions immediately prior to
the commencement of the project. This
is normally conducted over a 2 week period prior to commencement of
construction;
·
to monitor and interpret any perturbations of
prevailing background conditions with respect to acceptance criteria during
construction and initial operation in order to provide an early indication that
any of the environmental control measures or construction practices are failing
to achieve the required standards;
·
to provide data to determine the
effectiveness of any mitigation or control measures implemented through changes
in working practice undertaken if acceptance criteria are exceeded;
·
to provide a database of conditions after
construction for the assessment of the extended effects of construction and for
the post-project audit;
·
to provide an early indication if any of the
environmental control measures or environmental design assumptions might fail
to achieve their objectives during operation;
·
to assess compliance with contractual and
legislative environmental standards;
·
to assess the validity of the action and
limit levels (AL levels) set for the event/ action plans; and
·
to ensure that only acceptable environmental
impacts impinge upon nearby sensitive uses and receivers with the aim of
minimising adverse impact upon the surrounding environs.
Table 15.1 : AL Levels for Total Suspended Particulate (TSP)
Parameter |
24-hour Average TSP |
1-hour Average TSP |
Action Level |
Baseline+30% |
Baseline +30% |
Limit Level |
260 * |
500 * |
Note *
Hong Kong Air Quality Objectives and
Contractual Standard
·
to collect sufficient data to ensure that
predicted impacts and environmental standards are not exceeded;
·
to evaluate and report on the noise levels
measured and their significance;
·
to identify any measures necessary to
mitigate unacceptable effects;
·
to provide data to determine the
effectiveness of any mitigation measures which may be sought through changes in
working practice, plant and equipment, location of plant and equipment,
acoustic screens and barriers etc.; and
·
to protect the nearby NSR from unacceptable
noise impact.
Table 15.2 : AL Levels for Noise Measured at NSR during
Construction
Period |
Weekdays 0700 to 1900 Hours |
Evenings |
Night-time |
|
Action Level |
When one documented complaint is received |
|||
Limit Level |
75 dB(A) |
70* dB(A) |
60* dB(A) |
|
Note: * selected
based on area sensitivity rating ‘C’
·
to determine the essential environmental
background water quality;
·
to collect all data necessary to monitor
significant impacts;
·
to evaluate the quality and the significance
of the data;
·
to identify any measures necessary to
mitigate unacceptable effects;
·
to determine any extra monitoring necessary
to assess the effectiveness of the mitigation measures;
·
to ensure that construction is undertaken in
the most environmentally acceptable way and in such a manner as to cause as
little impact as possible to the Harbour water quality;
·
to provide an early indication if any of the
environmental controls, measures or environmental design assumptions might fail
to achieve their objectives during operation;
·
to access compliance with the Environmental
and Pollution Control Requirements; and
·
to issue reports on the above procedures on a
regular basis.
Table 16.1 : Schedule of Impacts and Mitigation Measures
No. |
Activity |
Mitigation/EIA
Recommendations |
Responsibility for
Implementation |
Location |
Implementation
Stage |
Permit
Conditions apply to |
Relevant
Guidelines Legislation |
9 |
Construction Landscape and Visual Control
Requirements |
Construction stage landscape and visual mitigation
measures should include : ·
Minimising
contractors accesses and working areas as far as possible; ·
Protection and
retention of existing vegetation where possible in accordance with the Hong
Kong Government "A Guide to Tree Planting and Maintenance in Urban Hong
Kong, Section 5" Care of Trees on Development Sites' and the Country
Parks Ordinance ·
Transplanting of
trees where appropriate; ·
Advance planting
and visual screening; ·
Conservation of
top soil; ·
Design of the
temporary works areas so as to optimise eventual use as promenade and public
open space; and ·
Sensitively
designed site hoarding. |
TDD's design consultant |
Area wide during design
and contract preparation |
D |
P, R, A, C |
11, 12, 13,14 |
10 |
Monitoring and Audit |
To be carried out in accordance with the Schedule in
the EM and A Manual |
TDD*/Contractor/RSS |
Works areas During construction End of construction and
within one year of operational phase |
C/O |
P, R, A, C |
1 |
|
|
|
TDD’s design consultant |
Area wide during design and contract preparation |
D |
P, R, A, C |
11,12,13,14 |
1. Environmental Impact
Assessment Ordinance Technical Memorandum (EIAO)
3. ExCo Criteria for ITR
4. Noise Control Ordinance
5. The ProPECC Note PN2/93 (Construction Noise daytime limits)
6. Air Pollution Control Ordinance (APCO)
7. Water Pollution Control Ordinance
(WPCO)(Cap. 358)
8. Waste Disposal Ordinance (Cap 354)
9. Waste Disposal (Chemical
Waste)(General) Regulation (Cap 354)
10. Land Ordinance (Cap 28)
11. WBTC 25/92 Allocation of Space for Urban
Trees
12. WBTC 25/93 Control of Visual Impact of
Slopes
13. WBTC 18/94 Management and Maintenance of
both Natural Vegetation and Landscape Works
14. WBTC 24/94 and PELBTC 3/94 “Tree
Preservation”
15.
Antiquities and Monuments Ordinance (Cap 53)
P Primary
and District Distributor Roads
R Reclamation
A North
Island Line Protection Works
C Central
and Wanchai Bypass
+ These
items should be excluded from any Environmental Permit conditions as these
refer to future development of the area (which is not designated under the
EIAO), and are not related to reclamation and dredging activities which are
designated, and can hence be controlled through EP conditions.
* Normally
undertaken by a specialist monitoring team employed directly by the proponent
and audited by the Environmental Works Checker.