Esb 194 Environmental Impact Assessment

CIVIL ENGINEERING AND DEVELOPMENT DEPARTMENT PROJECT PROFILE

Container Terminal 10 Development

Page i July 2008

CONTAINER TERMINAL 10 DEVELOPMENT

PROJECT PROFILE

JULY 2008

CIVIL ENGINEERING AND DEVELOPMENT DEPARTMENT



Page ii July 2008

TABLE OF CONTENTS

1 BASIC INFORMATION ............................................................................................................1

1.1 Project Title .........................................................................................................................1

1.2 Purpose and Nature of Project.............................................................................................1

1.3 Name of Project Proponent .................................................................................................2

1.4 Location and Scale of Project and History of Site...............................................................2

1.5 Number and Types of Designated Projects to be covered by the Project Profile................2

1.6 Name and Telephone Numbers of Contact Person..............................................................3

2 OUTLINE OF PLANNING AND IMPLEMENTATION PROGRAMME...........................4

2.1 Project Implementation and Timetable ...............................................................................4

3 POSSIBLE IMPACTS ON THE ENVIRONMENT ................................................................5

3.1 General ................................................................................................................................5

4 POSSIBLE ENVIRONMENTAL IMPACTS DURING CONSTRUCTION ........................6

4.1 Air Quality...........................................................................................................................6

4.2 Noise....................................................................................................................................6

4.3 Water Quality ......................................................................................................................6

4.4 Waste Management and Land Contamination ....................................................................7

4.5 Ecology and Fisheries .........................................................................................................7

4.6 Cultural Heritage .................................................................................................................8

4.7 Landscape and Visual Quality.............................................................................................9

4.8 Risk Assessment …….…………………...…..…..……………………….………………9

5 POSSIBLE ENVIRONMENTAL IMPACTS DURING OPERATION...............................10

5.1 Air Quality.........................................................................................................................10

5.2 Noise..................................................................................................................................10

5.3 Water Quality ....................................................................................................................10

5.4 Waste Management ...........................................................................................................10

5.5 Ecology and Fisheries .......................................................................................................11

5.6 Cultural Heritage ...............................................................................................................11

5.7 Landscape and Visual Quality...........................................................................................11

5.8 Glare ..................................................................................................................................11

5.9 Risk Assessment................................................................................................................11

6 MAJOR ELEMENTS OF THE SURROUNDING ENVIRONMENT.................................13

7 ENVIRONMENTAL PROTECTION MEASURES TO BE INCORPORATED ...............14

7.1 Air Quality Impact.............................................................................................................14

7.2 Noise Impact......................................................................................................................14

7.3 Water Quality Impact ........................................................................................................14

7.4 Sediment Management ......................................................................................................15

7.5 Waste Management Implications ......................................................................................15

7.6 Ecological and Fisheries Impact........................................................................................15

7.7 Cultural Heritage Impact ...................................................................................................16

7.8 Landscape and Visual Impact............................................................................................16

7.9 Glare Impact ......................................................................................................................16

7.10 Risk Assessment................................................................................................................17

8 USE OF PREVIOUSLY APPROVED EIA REPORTS.........................................................18



Page iii July 2008

LIST OF DRAWING

Drawing No. PW-GS08-007 Proposed Container Terminal 10 – Preliminary Feasibility Study



Page 1 July 2008

1 BASIC INFORMATION

1.1 Project Title

1.1.1 Container Terminal 10 (CT10) Development at Southwest Tsing Yi

1.2 Purpose and Nature of the Project

1.2.1 To develop a container terminal including back-up areas on a proposed reclamation site and

a proposed land formation site at Southwest Tsing Yi subject to the feasibility and site

availability of re-provisioning of affected facilities including oil depots.

1.2.2 The scope of the Project includes the following major works:

� Dredging, construction of seawalls, and reclamation to provide an approximately 180

ha land platform for the development of a container terminal, back-up areas, essential

infrastructure, supporting facilities and re-provisioning of affected facilities including

oil depots;

� Site formation and geotechnical works to provide an approximately 130 ha land

platform for the development of a container terminal, back-up areas, essential

infrastructure, supporting facilities and re-provisioning of the affected facilities

including oil depots;

� Dredging, construction of seawalls, reclamation, site formation, geotechnical works

and construction of essential infrastructure for off-site re-provisioning of oil depots;

� Dredging and realignment of navigation fairways and maintenance dredging during

the operational phase of CT10;

� Construction of quay decks and foundations;

� Construction of waterfront trans-shipment centre for oil and liquefied petroleum gas

(LPG) facilities;

� Construction of interchanges to provide connections between Route 3, Route 8 and

the proposed Tsing Yi Lantau Link, associated road and utilities diversion works and

associated re-provisioning works for the affected facilities;

� Construction of roads, footpaths, roadside planters, signage and road markings, road

lighting, etc. and all other associated roadworks;

� Construction of temporary roads and stormwater drainage system for the reclamation

and land formation works;

� Construction of stormwater drainage system, and extension/re-alignment of existing

box culverts and drainage channels;

� Construction of sewerage system including twin rising mains, gravity sewers and

sewage pumping stations, and extension/re-alignment of existing sewage outfalls;

� Construction of water supply system including fresh and salt water supply mains, fire

hydrants, service reservoirs and salt water pumping stations;

� Provision of public utility services including IT/telecommunication connections;



Page 2 July 2008

� Provision of associated environmental mitigation measures;

� Landscape works and tree preservation scheme; and

� Environmental monitoring.

1.3 Name of Project Proponent

1.3.1 Civil Engineering Office, Civil Engineering and Development Department has undertaken

to carry out a preliminary feasibility study and associated site investigation for re-

provisioning, land formation and infrastructure works to determine the feasibility of

developing the proposed CT10 at Southwest Tsing Yi.

1.4 Location and Scale of Project and History of Site

1.4.1 The Southwest Tsing Yi site is located on the southwestern part of Tsing Yi island, on the

eastern edge of the Ma Wan Channel. The CT10 will be developed on a proposed

reclamation site of 180 ha and a proposed land formation site of 130 ha at Southwest Tsing

Yi. The proposed location of CT10 is shown on Drawing No. PW-GS08-007 at Enclosure 1.

It is intended to provide not less than eight 400m long berths. The exact layout of the

proposed CT10 and the required reclamation and land formation are subject to further study

and will be confirmed after detailed investigation.

1.4.2 The existing site of Southwest Tsing Yi mainly comprises industrial facilities and container

related and Government facilities such as oil depots, dockyards, mid-stream sites, godown

sites, bus depot, fire station, WSD service reservoir, open storage areas, vehicles repair area

and electricity generation station. The total area of the existing oil depots at Southwest Tsing

Yi is approximately 58 ha. All or some of these oil depots will need to be relocated to allow

the CT10 development to take place. The exact number and the extent of affected facilities

including oil depots are subject to further study and will be confirmed after detailed

investigation.

1.4.3 Under the preliminary feasibility study, an initial assessment of re-provisioning sites will be

conducted to ascertain their feasibility in broad term. Subject to the feasibility and site

availability of re-provisioning of affected facilities including oil depots, another project

profile for application for a separate EIA study brief for decommissioning, construction and

operation of oil depots will be submitted. Re-provisioning site(s) will be subject to

subsequent detailed investigation and another environmental impact assessment.

1.5 Number and Types of Designated Projects to be Covered by the Project Profile

1.5.1 The Project comprises a Schedule 3 Designated Project (DP) as an engineering feasibility

study of this development project with a study area covering more than 20 ha, which

requires an EIA report. The Project also includes Schedule 2 DPs that, under the EIAO,

require Environmental Permits (EPs) to be granted by the DEP before they may be either

constructed or operated. The EIA study for this Schedule 3 DP will identify the exact types

of Schedule 2 DPs to be included in the Project. It is expected that the following elements

under this Project would be classified as Schedule 2 DPs and are covered in this Project

Profile:

� Distributor roads (considered as a DP under Schedule 2, Part I, A.1 of the EIAO)

� A container terminal (including its container backup facility) (considered as a DP



Page 3 July 2008

under Schedule 2, Part I, B.3 of the EIAO)

� Reclamation works (including associated dredging works) more than 5 ha in size

(considered as a DP under Schedule 2, Part I, C.1 of the EIAO)

� Decommissioning of dockyards (considered as a DP under Schedule 2, Part II, 17 of

the EIAO)

� Re-provisioning of dockyards (considered as a DP under Schedule 2, Part I, B.6 of the

EIAO)

1.6 Name and Telephone Number of Contact Person

Name: Ms. PANG, Alice (Civil Engineering Office, Civil Engineering and

Development Department)

Telephone No: 2762 5627



Page 4 July 2008

2 OUTLINE OF PLANNING AND IMPLEMENTATION PROGRAMME

2.1 Project Implementation and Timetable

2.1.1 The CT10 development at Southwest Tsing Yi will be implemented to a fast track

programme. It is anticipated that the preliminary feasibility study would commence in early

2009 for completion in early 2011. The preliminary feasibility study will be carried out by

consultants to be appointed.

2.1.2 Interactions with broader programme requirements or other proposed/committed projects

(all of which are subject to confirmation by the relevant project proponents) that shall be

considered in the EIA Study include:

� Tsing Yi Lantau Link.

� Harbour Area Treatment Scheme (HATS).



Page 5 July 2008

3 POSSIBLE IMPACTS ON THE ENVIRONMENT

3.1 General

3.1.1 Whilst, currently, details of the various development components have yet to be worked out,

the preliminary feasibility study will adopt a proactive approach in minimizing the likely

environmental impacts through landuse and transport planning. The following are possible

impacts on the environment arising from the CT10 development:

� Construction work will involve reclamation, construction of surcharge, handling and

stockpiling of excavated materials for roadworks, drainage and waterworks, etc.,

concreting works, remediation works during decommissioning of oil depots and

construction traffic movements on unpaved roads. These activities will increase the

levels of dust. Moreover, during the operation phase, vehicular emissions from

increased numbers of vehicles on new roads could cause air quality impact.

� Quay cranes, plant and machinery used as well as non-mechanical construction

activities will generate increased noise levels. Major noise sources would include

civil works and general construction activities. During the operational phase, traffic

noise would be generated from the increased number of vehicles, especially heavy

goods vehicles such as container tractors and trailers, using the new roads.

Operational noise associated with quay cranes and various trading/logistic/business

activities within the CT10 would be a concern.

� Waste generated during the construction phase and decommissioning of oil depots

would comprise excavated materials, construction waste, contaminated mud/soil,

chemical waste and general refuse, with associated dust and odour emissions, noise,

potential hazards and water pollution.

� Reclamation works and potentially polluted runoff may result in water quality and

marine ecological impacts.

� Reclamation works may affect areas of potential marine archaeological deposit which

have not been investigated and/or adequately studied previously.

� Reclamation may result in changes in hydrodynamic and flow regime in a number of

water bodies in Hong Kong. Possible impacts on water quality of major flow channels,

in particular, the dispersion of HATS effluent, will need to be studied.

� As large quantity of contaminated (and uncontaminated) mud may be generated,

potential sites will need to be identified to accommodate the disposal. Also, source of

fill material will be identified. If marine sand is required, potential sites and their

environmental impacts will be assessed. Quantity of marine sediment arising from the

regular maintenance dredging during operational phase of the CT10 will also be

assessed.

� The proposed reclamation may affect the existing drainage outfalls and the hinterland

drainage system. As such , a drainage impact assessment will need to be conducted.

� Landscape and visual impacts may arise from the CT10 development.

� High mast lighting resulting from the potential 24-hour 7-day per week operation of

the CT10 may cause glare impact.

� There is a possibility of cumulative environmental impacts as a result of concurrent

projects undertaken near the CT10 development.

� Risk to life may arise during construction and operation of the CT10 due to adjacent

operating oil depots.



Page 6 July 2008

4 POSSIBLE ENVIRONMENTAL IMPACTS DURING CONSTRUCTION

4.1 Air Quality

4.1.1 Subject to detailed investigation, the nearest residential air sensitive receivers (ASRs) are on

Tsing Yi, but are slightly more than 400 m from the boundary of the site. A smaller number

of other facilities (e.g. dockyards and industrial facilities) that are also considered to be

ASRs lying between 100 m and 500 m from the site. For those ASRs that are within 500 m

of the site, there are no significant topographical features between the site and the ASRs.

The prevailing wind direction is easterly. The ASRs are not located down wind of the site.

Possible construction phase air quality impacts would include:

� Fugitive dust arising from the newly reclaimed areas and surcharged areas,

conveyance of filling materials, site formation and geotechnical works, construction

activities, movement of construction traffic over the site area, and wind erosion of

open sites and stockpiling areas.

� Cumulative impact of fugitive dust resulting from any adjacent construction works

that may be implemented at the same time as the CT10 development works.

� Odour generation from dredging and reclamation activities, sediment management

and remediation works to land contamination.

4.2 Noise

4.2.1 Subject to detailed investigation, the nearest residential noise sensitive receivers (NSRs) are

on the eastern side of Tsing Yi, and are more than 300 m from the boundary of the site.

Possible construction noise impacts may result from:

� Neighbouring concurrent construction works.

� The use of powered mechanical equipment on construction site.

� Land traffic, especially heavy vehicles, along site access roads.

� Marine traffic, especially derrick lighters and barges, during transportation and lifting

of construction materials.

� Construction of quay foundations and decks.

� General construction activities associated with site clearance, geotechnical works,

dredging/ reclamation works and works for the provision of infrastructure including

roads and drains.

4.3 Water Quality

4.3.1 During construction, impacts would principally arise from dredging and reclamation works

and realignment of Ma Wan Channel. The proposed method of construction involves

dredging and disposal of marine sediments beneath the seawalls, in order to minimize

subsequent settlement. Reclamation for the container terminal would take place using a

mixture of marine sand and public fill. Dredging will also be required in the approaches to

the proposed container terminal development, to ensure sufficient depth of water to

accommodate vessels of the predicted size. Dredging will be undertaken by grab dredgers



Page 7 July 2008

and/or suction hopper dredgers, and filling by pelican barge or trailer suction hopper

dredgers. The finer portion of fill material and a proportion of dredged mud may be lost to

the surrounding water column, become suspended and transported away from the work area

by tidal currents, creating a sediment plume. Formation of the sediment plume may cause

impacts at nearby sensitive receivers, including those within Victoria Harbour and

surrounding waters. Possible water quality impacts during the construction phase and

disposal of dredged materials off-site would include:

� Change in coastline configuration that may influence the hydrodynamic and water

quality conditions near Ma Wan Channel and western part of Victoria Harbour.

� Temporary elevation in concentration of suspended solids (SS) and generation of

sediment plumes, release of organic and inorganic contaminants and nutrients during

dredging and filling.

� Increase in SS levels and turbidity arising from construction site runoff and

wastewater generated from construction activities.

� Change in sediment deposition rate that could affect the ecological sensitive receivers

in the vicinity to the construction area.

4.4 Waste Management and Land Contamination

4.4.1 There are a number of oil storage facilities in the Southwest Tsing Yi area, and also a

dockyard. The land on which these facilities are sited may be contaminated as a result of

their operation. Potential contaminants include inorganic substances (such as metals) and

organic compounds (such as petroleum hydrocarbons). The most significant potential

contaminants are expected to be petroleum hydrocarbons, which may have entered the soil

as a result of accidental leaks or spillage during operation of the facilities. The actual extent

of contamination cannot be estimated with any certainty, and will be affected by factors

such as operational procedures and the facilities and the history of spillages or other

incidents. There is therefore a wide margin of uncertainty relating to both the lateral and

vertical extent of contamination. However, given the extent and scale of the potentially

contaminative uses, it is expected that large-scale remediation works would be required.

4.4.2 Wastes generated by the construction works are likely to include:

� Site wastes including refuse.

� Sewage from site toilets & canteens.

� Chemical wastes such as waste lubricating oils.

� Construction and demolition materials.

� Dredged sediment.

� Contaminated soil due to decommissioning of oil depots.

Such wastes may result in environmental impacts if not properly controlled/ managed.

4.5 Ecology and Fisheries

4.5.1 Subject to detailed investigation, the main habitat type in developed areas of Southwest

Tsing Yi (i.e., around Tsing Yi Road and associated slopes) is plantation woodland. The



Page 8 July 2008

mid-slope areas above Tsing Yi Road fall within an afforestation site. The area below Tsing

Yi Road, which includes the site area, is almost entirely developed over reclaimed land, and

supports no vegetated habitat of note. Few species of bird of prey of note have been

recorded in the past that may potentially utilize the coastal environs of Southwest Tsing Yi

as a roost and /or feeding ground. From the ecological baseline profile, there would be no

particular issues of concern as regards terrestrial/freshwater ecology. However, it will be

necessary to confirm there will be no adverse cumulative ecological impacts from other

infrastructure developments.

4.5.2 It appears that the immediate site area does not have any natural shoreline although there are

areas of natural shoreline in the vicinity that may be subject to potential impacts from a

change in hydrodynamics and/or water quality from the CT10 development. Subject to

detailed investigation, the Southwest Tsing Yi community could be considered as having

lower than average ecological value compared with other surveyed areas with a similar

character. However, potential induced impacts on inter-tidal communities through

deteriorating water quality from container terminal construction and operation, particularly

dredging of potentially contaminated sediment, and through potential changes in operational

hydrodynamics and/or surface drainage run-off are anticipated. The water quality of the

Gazetted Tung Wan Beach in Ma Wan will need to be studied.

4.5.3 With reference to data provided by Agriculture, Fisheries and Conservation Department, the

marine waters in the immediate study area are not an important habitat for the Chinese

White Dolphin. Accordingly, no significant direct impacts on the Chinese White Dolphin

are anticipated from the CT10 development.

4.5.4 Subject to further study, there would be permanent loss of approximately 180 ha of benthic

habitat and overlying water column off Southwest Tsing Yi. Possible impacts to near shore

waters and fisheries due to dredging and reclamation will also need to be studied.

4.5.5 The only fish culture zone (FCZ) in the vicinity of Tsing Yi is that at Ma Wan. The open-sea

areas east and west of Ma Wan have the highest productivity for adult fish. Potential

induced impacts on fisheries resources from deteriorating water quality, and particularly

dispersal of potentially contaminated sediment towards the sensitive Ma Wan FCZ to the

northwest are anticipated.

4.6 Cultural Heritage

4.6.1 The land-based portions of the site have been developed as oil depots, dockyards, container

related uses and other industrial uses. It is likely that this development has removed any

features of cultural or historical significance that may have existed along the coastline of

Southwest Tsing Yi. There are no graded buildings, deemed or declared monuments of

historical importance either within or near to the site boundary, and no listed archaeological

sites. Potential impact upon areas/ items of significant cultural heritage on land is considered

minimal, as there would be no physical encroachment or interference with known cultural

heritage areas.

4.6.2 In common with other coastal areas of Hong Kong, there is the potential for sites of marine

archaeological interest to be present on the seabed. However, the high flows through the

nearby Ma Wan Channel and the works carried out for the construction of the oil depots and

related berthing facilities are likely to result in an unfavourable environment for the

preservation of significant remains.

4.6.3 Potential marine archaeological deposit if present within the reclamation/dredging area



Page 9 July 2008

would be affected by the proposed reclamation and dredging works off the southwest shore

of Tsing Yi. It is therefore considered necessary to conduct a marine archaeological

investigation (MAI) to ascertain if there are any marine archaeological resources to be

impacted by the marine works.

4.7 Landscape and Visual Quality

4.7.1 The site is segregated from the rest of Tsing Yi by Cheung Tsing Highway, Tsing Yi Road

West and the vegetated uplands of Tsing Yi. The existing uses of the site are predominantly

waterfront industries (oil depots, mid-stream sites, dockyards and container related uses) and

open water. The primary sources of impact may arise from the impingement of views from

both sea and land due to the reclamation works. Such impact should be addressed in the

landscape and visual impact assessment to be carried out under the preliminary feasibility

study. Possible impacts on residential development at Ma Wan will need to be studied.

4.7.2 The landscape character of the area currently consists of waterfront industry, set against the

grass/scrub covered uplands of Tsing Yi. The coastal waters in this vicinity are close to

major shipping channels and hence are characterized by a high density of marine traffic. The

developed nature of this area is further reinforced by the surrounding transport infrastructure

such as Tsing Ma Bridge, Stonecutters Bridge and the proposed Tsing Yi Lantau Link. The

impacts of development of a container terminal on the landscape character of this area is

therefore considered to be limited.

4.8 Risk Assessment

4.8.1 The oil depots are classified as a Potentially Hazardous Installation (PHI). The 1 km radius

PHI consultation zone may impinge upon the CT10 development. Therefore, Quantitative

Risk Assessment (QRA) should be undertaken to ensure that risk associated with oil depots

complies with Government Risk Guidelines in case construction workers of the CT10 is

brought into the consultation zone. The QRA might cover different scenarios during the

phased construction of CT10 at Southwest Tsing Yi and the phased decommissioning of oil

depots.



Page 10 July 2008

5 POSSIBLE ENVIRONMENTAL IMPACTS DURING OPERATION

5.1 Air Quality

5.1.1 Potential operation phase air quality impact would include:

� Emissions of nitrogen dioxide (NO2) and respirable suspended particulates (RSP)

from vehicles (especially heavy vehicles).

� Odour from the sewage pumping stations should be taken into account.

� Emissions from cargo handling equipments powered by diesel fuel, marine vessels

and emissions and the like.

5.2 Noise

5.2.1 Potential operation noise impact would include:

� Traffic noise arising from the new roads for the CT10 development, which may affect

existing and future noise sensitive receivers (NSRs).

� Fixed plant noise sources (such as ventilation exhaust fans, sewage pumping stations,

utilities, etc.) and noise associated with quay cranes, various freight forwarding

activities and movement of containers.

5.3 Water Quality

5.3.1 Given the strategic importance of the HATS outfall, it is noted that the possible impact of

the container terminal development on dispersion and dilution is an issue of concern that

requires detailed examination. Possible impacts on other major sewage and stormwater

outfalls will also need to be studied. Potential operational phase water quality impact would

include:

� Runoff arising from the CT10 development and new roads.

� Change in coastline, due to reclamation, that may influence the hydrodynamic and

water quality conditions.

� Impact on ecological sensitive receivers due to diversion of storm water and sewage

outfalls.

� Pollution due to accidental fuel spillage from marine vessels.

� Sewage generated from the CT10 will be diverted to the Stonecutters Island Sewage

Treatment Works through a new sewerage system and associated impacts are not

expected. Capacity of any public sewerage system to be connected with the new

system will need to be assessed.

� Sediment plume and marine sediment arising from regular maintenance dredging

during operation phase of the CT10.

5.4 Waste Management



Page 11 July 2008

5.4.1 Wastes generated during the operation phase would mainly comprise:

� Industrial and chemical wastes.

� Commercial wastes (from offices and restaurants).

5.4.2 The closest Refuse Transfer Station is located at Sham Shui Kok. Therefore, with suitable

waste management arrangements provided, resulting on-site/off-site impacts are not

expected.

5.5 Ecology and Fisheries

5.5.1 Reclamation would cause permanent loss of sea area. Given the scale and location of the

land use, direct ecological and fisheries impact will need to be assessed. There might be

indirect impact arising from the loss of foraging ground due to reclamation. Potential

indirect fisheries/ecological impact due to changes in water quality or hydrodynamics

induced by reclamation at Southwest Tsing Yi will need to be studied.

5.5.2 Potential pollution sources during the operation phase would be storm water run-off from

the CT10 area, possibly contaminated with oils and other substances draining from road

surfaces. Given the scale and location of the land use for the CT10, pollution impacts on

ecological sensitive receivers and fisheries are minimal.

5.6 Cultural Heritage

5.6.1 Cultural heritage impacts during the operation phase are not expected.

5.7 Landscape and Visual Quality

5.7.1 Landscape and visual impacts during operation would result from the new coastline and

from the CT10 development on the newly reclaimed area. The CT10 would consist mainly

of low-rise industrial development and quay cranes. Impacts would occur primarily from

visual obstruction to views from Ma Wan, Northeast Lantau and hillsides in the hinterland

of Tsing Yi. Landscape and visual impacts from any operational noise mitigation measures

(e.g. noise barriers, if any) of new roads should also be addressed. Impacts on any loss of

natural vegetation and landscape and the impact on the visual context as a result of the loss

of huge area of waterbody will be addressed in the landscape and visual impact assessment

to be carried out under the preliminary feasibility study.

5.8 Glare

5.8.1 Operation of the CT10 would likely be 24-hour, 7-day per week. Floodlights and high mast

lighting installed in the CT10 may generate glare and light pollution to Ma Wan, Northeast

Lantau and hillsides in the hinterland of Tsing Yi.

5.9 Risk Assessment



Page 12 July 2008

5.9.1 The oil depots are classified as a Potentially Hazardous Installation (PHI). The 1 km radius

PHI consultation zone may impinge upon the CT10 development. Therefore, Quantitative

Risk Assessment (QRA) should be undertaken to ensure that risk associated with oil depots

complies with Government Risk Guidelines in case working population of the CT10 is

brought into the consultation zone. The QRA might cover different scenarios during the

phased development of CT10 at Southwest Tsing Yi. .



Page 13 July 2008

6 MAJOR ELEMENTS OF THE SURROUNDING ENVIRONMENT

6.1.1 The major existing and planned sensitive receivers and sensitive parts of the natural

environment that might be affected by the Project include:

� Coastal waters along Southwest Tsing Yi;

� Marine resources (including fisheries and fish culture zone at Ma Wan);

� Visual value of Victoria Harbour, Ma Wan and Northeast Lantau;

� Visual sensitive receivers (including travellers along Tsing Ma Bridge and hillsides in

the hinterland of Tsing Yi; and urban dwellers in North East Lantau, Ma Wan, Tsing

Yi, Sham Tseng and Hong Kong Island West);

� Water quality and amenity value of Tung Wan Beach at Ma Wan;

� Water quality sensitive receivers (such as a seawater intake for Tsing Yi salt water

pumping station at the east of Tsing Yi Island and a private seawater intake system for

flushing of the “Park Island” residential housing estate on Ma Wan Island);

� Proposed Tsing Yi Lantau Link;

� Landscape conservation in Tsing Yi; and

� Low-density and low-rise recreation and tourism development located about 450m to

the north of the proposed CT10 site.

6.1.2 The major elements of the surrounding environment and existing and planned land uses that

might affect the area of new development proposed under the Project and re-provisioning of

oil depots include:

� Route 3 and Route 8;

� Tsing Ma Bridge;

� Proposed Tsing Yi Lantau Link;

� Oil depots in Tsing Yi;

� Ship-building/ship repairing sites;

� Power station and Chemical Waste Treatment Works in Tsing Yi; and

� Marine borrow area and mud disposal facility at South of Tsing Yi.



Page 14 July 2008

7 ENVIRONMENTAL PROTECTION MEASURES TO BE INCORPORATED

7.1 Air Quality Impact

7.1.1 Since no particularly severe impacts are predicted, the mitigation measures required will be

similar to those employed on all major infrastructure projects in Hong Kong, and aimed

mainly at minimizing the generation of dust during construction. Construction dust is not

likely to be an issue, with the implementation of proper dust control and suppression

measures as stipulated in the Air Pollution Control (Construction Dust) Regulation.

7.1.2 Operational air quality impacts arising from traffic on the new roads would be minimized

through incorporation of set-backs, to provide sufficient separation between the major roads

and the air sensitive receivers and the use of marine fuels with lower sulphur contents.

7.2 Noise Impact

7.2.1 With the application of mitigation in the form of quieter alternative mechanical plant,

installation of movable noise barriers, reduction in number of plant and on-time percentage

of powered mechanical equipment, construction noise criteria would be likely to comply

with relevant criteria. Alternative mitigation measures such as quiet construction methods,

scheduling/ phasing of noisy construction works, and other possible measures for reducing

construction noise impact may also need to be explored. Prohibition of carrying out

construction activities during night time period (23:00 – 07:00) may be considered to

alleviate construction noise impact to the surrounding area.

7.2.2 Operational phase traffic noise arising from the new roads, quay cranes and movement of

containers and other goods/ packages in the CT10 would be minimized with the

implementation of noise mitigation measures such as provision of setbacks, berms,

alternative road alignments, appropriate adjustment of site layouts and building design, etc.

Other direct mitigation measures as stipulated in the Technical Memorandum on

Environmental Impact Assessment Process should also be investigated (noise barriers

should be recommended if necessary) to reduce noise impacts to sensitive receivers. In

accordance with the noise assessment for the Hong Kong International Airport conducted by

the Airport Authority, the CT10 would be located outside the noise exposure forecast 25

(NEF25) contour and hence the aircraft noise impact on the development would be

acceptable.

7.3 Water Quality Impact

7.3.1 Mitigation measures considered necessary during dredging and filling operations would

include:

� Installation of silt curtains during dredging works.

� Construction of the seawall in the early stages of the reclamation to effectively

confine sediment release during dredging and filling.

� Reduction of the dredging rate, use of tightly closed grabs, and control of grab



Page 15 July 2008

descent speed to minimize disturbance to the seabed and sediment loss during

dredging and raising of grabs.

� Barges for filling material transportation should be fitted with water tight seals to their

bottom opening to prevent leakage of materials.

7.3.2 For land-based construction activities, water quality impact would be readily mitigated with

the adoption of good site arrangement and management practices.

7.4 Sediment Management

7.4.1 The requirements and procedures for dredged mud disposal under the Environment,

Transport and Works Bureau Technical Circular No. 34/2002 should be followed.

7.5 Waste Management Implications

7.5.1 Environmental protection measures may include minimizing the generation of construction

and demolition (C&D) material, maximizing the use of inert C&D material in reclamation

and other construction works, and minimizing the disposal of dredged sediment (both during

construction and maintenance stage).

7.5.2 A number of potential mitigation measures may be implemented to remediate land

contamination associated with the oil depots and dockyard. There are a number of possible

remedial techniques that may be applicable to any contamination present at Southwest Tsing

Yi. Extensive remediation works would be required if there is widespread contamination of

soil(and possibly also groundwater) with petroleum hydrocarbons.

7.5.3 Waste management measures and good site practices in waste handling, disposal and

transportation should be implemented, in particular, during decommissioning of oil depots.

7.6 Ecological and Fisheries Impact

7.6.1 In general, the mitigation measures recommended for ecology are also applicable to

fisheries. Due to the generally degraded terrestrial and marine ecosystems around Southwest

Tsing Yi, there is limited potential for adverse on-site ecological impacts on habitats and

species of conservation concern. It should be noted that as there will be a net loss of

ecological resources (e.g. benthic habitat at the reclamation site). An opportunity for

ecological enhancement is to maximize the availability of sloping boulder seawalls as an

artificial habitat conducive to colonization by inter-tidal and sub-tidal benthic species and

fisheries.

7.6.2 In general, proper implementation of the good practice measures to control liquid wastes and

water quality will also be effective in avoiding/minimizing the potential for impacts on the

coastal/marine ecosystem.

7.6.3 To reduce impact on the marine environment, closed-grab dredger and silt curtains should

be deployed to minimize impacts. Seawalls with specially designed facing may be

constructed to enhance colonization by marine organisms. Reclamation should be carried

out behind a seawall and only when the seawall is above sea level.



Page 16 July 2008

7.7 Cultural Heritage Impact

7.7.1 An MAI should be conducted by qualified marine archaeologists to assess the marine

archaeological impact to the affected seabed in the terminal. In accordance with the

guidelines from the Antiquities and Monuments Office (AMO), the MAI consists of 4 tasks,

i.e. (1) Baseline Review, (2) Geophysical Survey, (3) Establishing Archaeological Potential,

and (4) Remote Operated Vehicle (ROV)/Diver Survey/Watching Brief. The archaeological

potential of the study area should be firstly identified and established based on the results of

Tasks 1 and 2 in order to facilitate formulation of a strategy for investigation. If there is an

indication of archaeological potential within the study area, Task 4 will be required to be

carried out.

7.8 Landscape and Visual Impact

7.8.1 Impacts could be effectively controlled by careful attention to the extent and form of the

planned reclamation and the type and height of proposed structures to be placed on the

newly reclaimed area. In addition, landscape design of the overall area would help to reduce

impacts. In addition to tree preservation, the following mitigation measures would be

considered for implementation where feasible and necessary:

Roadside Landscaping

� Implementation of roadside planting.

� Use of planted bunds or landscaped berms to screen developments from the

surrounding areas.

Open Space Framework

� Implementation of an open space framework, with green spines and nodes, creating

an attractive landscape environment for the CT10 and the adjoining waterfront.

Noise Barrier Design

� Use of transparent panels to reduce visual obstruction.

� Use of planting adjacent to noise barriers.

� Appropriate colour selection of panels and support structures to relate to other

streetscape structures or surrounds.

� Design of support structures to incorporate a high level of quality and aesthetics.

Opening up views from hillsides in the hinterland of Tsing Yi

� Provision of view corridors as an open spatial connection to the hillsides in the

hinterland of Tsing Yi

� Stepping down building heights along the waterfront to reduce visual obstruction.

7.9 Glare Impact



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7.9.1 For reduction of glare and light pollution, floodlights in particular would need to be

carefully positioned and angled so as to minimize light escape to surrounding non-target

areas. High mast lighting should neither be pointing skywards nor generating glare impact,

which would, in turn, affect safety of aircraft operation. A Glare Impact Assessment should

be undertaken in this respect.

7.10 Risk Assessment

7.10.1 A QRA should be undertaken and risk mitigation measures may be specified to reduce the

risk associated with oil depots. The following risk mitigation measures would be considered

for the CT10 operation where necessary and practicable :

� Locate the high density CT10 working population area away from the oil depots.

� Locate the outdoor working area away from the oil depots.

� Maximize the use of indoor working environment.

� Emergency plan for response to potential oil and LPG leakage events.

� Decommission all/most of the oil depots before construction and operation of CT10.



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8 USE OF PREVIOUSLY APPROVED EIA REPORTS

8.1.1 There are no relevant EIA reports already approved under the EIA Ordinance. However, the

following studies are relevant and will be referred to in the preliminary feasibility study for

CT10 :

� Study on Hong Kong Port – Maser Plan 2020 (completed in 2004)

� Tsing Yi Lantau Link – Feasibility Study (in progress)

� South-East Tsing Yi Port Development – Planning and Engineering Feasibility Study

for Container Terminal No. 9 (completed in 1991)



July 2008

LIST OF DRAWING

Esb 194 Environmental Impact Assessment

Documents

Transcript of Esb 194 Environmental Impact Assessment