6
Waste Management Implications
6.1.1
This Section identifies the potential wastes
arising from the construction of the Project and evaluates the potential
environmental impacts associated with the storage, handling, transportation and
disposal of the wastes. Waste is not expected to be generated during the
operation phase of the Project.
6.2 Legislations, Standards and Guidelines
6.2.1
The criteria for evaluating waste management
implications are stated in Annex 7 of the EIAO-TM. Annex
15 of the EIAO-TM prescribes the general approach and methodology
for assessing the waste management implications caused by a project or
proposal.
6.2.2
The following legislations relate to the handling,
treatment and disposal of wastes in Hong Kong and are used in assessing
potential impacts related to waste management of the Project implications:
·
Waste Disposal Ordinance (CAP.354);
·
Waste Disposal (Chemical Waste) (General) Regulation (CAP.354C);
·
Waste Disposal (Charges for Disposal of Construction Waste) Regulation
(CAP.354N);
·
Land (Miscellaneous Provisions) Ordinance (CAP.28); and
·
Public Health and Municipal Services Ordinance (CAP.132) - Public
Cleansing and Prevention of Nuisances Regulation;
Waste
Disposal Ordinance (WDO) (CAP.354)
6.2.3
The WDO prohibits the unauthorised disposal of
wastes, with waste defined as any substance or article which is
abandoned. Under the WDO, wastes can only be disposed of at
licensed waste disposal facilities licensed by Environmental Protection
Department (EPD).
Waste
Disposal (Charges for Disposal of Construction Waste) Regulation (CAP.354N)
6.2.4
The Waste Disposal (Charges for Disposal of
Construction Waste) Regulation defined construction waste as any substance,
matters or things that is generated from construction work and abandoned,
whether or not it has been processed or stockpiled before being abandoned, but
does not include any sludge, screening, or matter removed in or generated from
any desludging, desilting or dredging works.
6.2.5
Depending on the percentage of inert materials in the
material, construction waste can be disposed of at public fill reception
facilities, construction waste sorting facilities, landfills and outlying
islands transfer facilities, where differing disposal costs would be
applied. This scheme encourages waste reduction and hence minimise the
costs of the Contractor or Project Proponent.
6.2.6
Table 6.1 summarises the
Government waste disposal facilities for construction waste.
Table 6.1
Government Waste Disposal Facilities
for Construction Waste
|
Government Waste
Disposal Facilities
|
Type of Construction Waste Accepted
|
|
Public fill
reception facilities
|
Consisting
entirely of inert construction waste (a)
|
|
Sorting
facilities
|
Containing
more than 50% by weight of inert construction waste (a)
|
|
Landfills
(b)
|
Containing
not more than 50% by weight of inert construction waste (a)
|
|
Outlying
Islands Transfer Facilities (b)
|
Containing
any percentage of inert construction waste (a)
|
|
Notes:
(a)
Inert
construction waste means rock, rubble, boulder, earth, soil, sand, concrete,
asphalt, brick, tile, masonry or used bentonite.
(b)
If a load of
waste contains construction waste and other wastes, that load will be regarded
as consisting entirely of construction waste for the purpose of calculating
the applicable charge.
|
Waste
Disposal (Chemical Waste) (General) Regulation (CAP.354C)
6.2.7
Chemical waste as defined under the Waste Disposal
(Chemical Waste) (General) Regulation includes any substance being scrap
material, or unwanted substances specified under Schedule 1 of the Regulation,
if such a substance or chemical occurs in such a form, quantity or
concentration so as to cause pollution or constitute a danger to health or risk
of pollution to the environment.
6.2.8
Chemical waste producers shall register with the
EPD. Any person who contravenes this requirement commits an offence and
is liable to a fine and imprisonment. Producers of chemical wastes must
treat their wastes, utilising on-site plants licensed by the EPD or have a
licensed collector take the wastes to a licensed facility. For each
consignment of wastes, the waste producer, collector and disposer of the wastes
must sign all relevant parts of a computerised trip ticket. The system is
designed to allow the transfer of wastes to be traced from cradle-to-grave.
6.2.9
The Regulation prescribes the storage facilities
to be provided on site including labelling and warning signs. To minimise
the risks of pollution and danger to human health or life, the waste producer
is required to prepare and make available written procedures to be observed in
the case of emergencies due to spillage, leakage or accidents arising from the
storage of chemical wastes. He/she must also provide employees with
training in such procedures.
Land
(Miscellaneous Provisions) Ordinance (CAP.28)
6.2.10 The inert portion of construction waste ([1]) (also called public fill) may be
taken to public fill reception facilities. Public fill reception
facilities are operated by the Civil Engineering and Development Department
(CEDD). The Land (Miscellaneous Provisions) Ordinance requires
that individuals or companies who deliver public fill to the public fill
reception facilities to obtain Dumping Licences. The licences are issued
by the CEDD under delegated authority from the Director of Lands.
6.2.11 Under the licence conditions, public fill reception facilities will
only accept inert earth, soil, sand, rock, boulder, rubble, brick, tile,
concrete, asphalt, masonry or used bentonite. In addition, in accordance
with paragraph 11 of Development Bureau (DevB) Technical Circular (Works)
(DevB TC(W)) No.6/2010), the Public Fill Committee will advise on the
acceptance criteria (eg no mixing of construction waste, nominal size of the
materials less than 250mm, etc.). The material should, however, be free
from marine mud, household refuse, plastic, metal, industrial and chemical
wastes, animal and vegetable matter and any other materials considered
unsuitable by the public fill reception facility.
Public
Cleansing and Prevention of Nuisances Regulation (CAP.132)
6.2.12 This Regulation provides further control on the illegal
dumping of wastes on unauthorised (unlicensed) sites. The illegal dumping
of wastes can lead to a fine and/or imprisonment.
Other
Relevant Guidelines and Documents
6.2.13 Other relevant guidelines/ circulars applicable to waste management
and disposal for this Project include:
·
Works Branch Technical Circular (WBTC) No.2/93, Public Dumps;
·
WBTC No.2/93B, Public Filling Facilities;
·
WBTC Nos.4/98 and 4/98A, Use of Public Fill in Reclamation and Earth
Filling Projects;
·
WBTC No.12/2000, Fill Management;
·
WBTC No.19/2001, Metallic Site Hoardings and Signboards;
·
WBTC No.12/2002, Specification Facilitating the Use of Recycled
Aggregates;
·
ETWB TC(W) No.19/2005, Environmental Management on Construction Sites;
·
Development Bureau Technical Circular (Works) (DEVB TC(W)) No. 6/2010,
Trip Ticket System for Disposal of Construction and Demolition Materials;
·
DEVB TC(W) No.8/2010, Enhanced Specification for Site Cleanliness and
Tidiness;
·
DEVB TC(W) No.2/2011, Encouraging the Use of Recycled and other Green
Materials in Public Works Projects;
·
DEVB TC(W) No.9/2011, Enhanced Control Measures for Management of Public
Fill;
·
CEDD TC No.11/2019, Management of Construction and Demolition Materials;
·
Project Administration Handbook (PAH) for Civil Engineering Works (2020
Edition), Section 4.1.3 of Chapter 4 – Management of Construction and
Demolition Material Including Rock;
·
Hong Kong Planning Standards and Guidelines, Chapter 9 (Section 6 –
Waste Management); and
·
Code of Practice on the Packaging, Labelling and Storage of Chemical
Waste.
6.2.14 In accordance with policies relating to construction and demolition
(C&D) materials disposal documented in the WBTC No.2/93 Public Dumps, inert
C&D materials (i.e., public fill) should be transported to Public Fill
Reception Facilities (PFRFs) instead of disposing of at landfill. According to The
Land (Miscellaneous Provisions) Ordinance, individuals or companies
delivering public fill to PFRFs are required to hold dumping licences issued
under delegated powers from the Director of Lands.
6.2.15 Under DevB TCW No.6/2010 Trip Ticket System for
Disposal of Construction and Demolition Materials, for all contracts that are
expected to generate inert C&D materials requiring disposal from site, the
project office shall write to the Public Fill Committee (PFC) through Secretary
of the PFC to request a designated disposal ground for incorporation into the
tender documents. For contracts where the estimated amount of non-inert C&D
materials requiring disposal at landfill facilities equals to or exceeds 50m3,
the project office shall seek confirmation from the Director of Environmental
Protection (DEP) in terms of the availability of landfill facilities for
disposal of such materials and the DEP will designate landfill facilities, if
available, for the contracts. For contracts where the estimated amount of
non-inert C&D materials to be generated from the contract is less than 50m3,
the project office is not required to apply to DEP for designated landfill
facilities but it should still specify in the tender documents of the
appropriate landfill facilities for disposal.
6.2.16
Under Section 4.1.3 of
Chapter 4 of PAH for Civil Engineering Works (2020 Edition), measures have been
introduced to enhance the management of C&D materials, and to minimise its
generation at source. The enhancement measures include:
·
Drawing up a Construction and Demolition Materials Management Plan
(C&DMMP) at an early design stage to minimise C&D materials generation
and to encourage proper management of such materials;
·
Vetting of the C&DMMP prior to upgrading of the project to Category
A in the Public Works Programme; and
·
Providing the contractor with information from the C&DMMP in order
to facilitate the preparation of Waste Management Plan (WMP) and to minimise
C&D materials generation during construction.
6.2.17 The ETWB TCW No.19/2005 Environmental Management on
Construction Sites introduces additional measures to enhance waste management
on construction sites. The circular sets out the policies and procedures that
require the contractors to prepare and implement an Environmental Management
Plan (EMP), which includes the WMP to encourage on-site sorting of C&D
materials and to minimise generation of C&D materials during the course of
construction.
6.3 Expected Waste Arising during the Construction Phase
6.3.1
The types of wastes expected to be generated during the
construction phase include:
·
C&D materials;
·
Chemical waste; and
·
General refuse.
No dredged sediment
or excavated sediment would be generated during the construction of the
Project.
C&D
Materials
6.3.2
C&D materials will be generated from different
construction works of the Project, including site clearance, minor slope and
excavation works, as well as piling and superstructure works. The C&D
materials would comprise both inert C&D materials (i.e. excavated soil,
rock, broken concrete) and non-inert C&D materials (i.e. vegetation, wood,
plastics, packaging materials, etc). Earthworks such as slope works and
external lateral support (ELS) works would be carried out in phases throughout
the construction period to avoid generation of large quantity of excavated
materials in short period of time. Excavated materials generated would be
stored temporarily on site and used for subsequent backfilling as far as
possible. No barging point or conveyor system would be used during the
construction of the Project.
6.3.3
Based on the latest construction scheme, it is
estimated that a total of 59,378m3 of C&D materials will be
generated during the construction phase. A summary the estimated
generation of the C&D materials is provided in Table 6.2. It
should be noted that these quantities are initial estimates only and would
require further review by the Contractor.
Table 6.2 Summary of
Estimated Generation of C&D Materials during Construction Phase
|
Type of C&D Materials
|
Volume (m3)
|
|
Inert C&D materials
|
On-site reuse (e.g. backfilling)
|
25,360
|
|
Disposed of at public fill reception
facilities
|
28,328
|
|
Sub-total:
|
53,688
|
|
Non-inert C&D materials
|
5,690
|
|
Total:
|
59,378
|
6.3.4
The C&D materials generated on site will be sorted
into inert portion (i.e. public fill comprising excavated soil, rock and broken
concrete) and non-inert portion (i.e. construction waste comprising vegetation,
wood, plastics, packaging materials, etc).
6.3.5
It is estimated that a total of 53,688m3 of
inert C&D materials will be generated during the construction phase.
As shown in Table 6.2, a significant amount of inert C&D materials
generated could be reused on site for backfilling (i.e. 25,360m3),
while the remaining surplus inert C&D materials (i.e. 28,328m3)
will require off-site disposal. The surplus inert C&D materials will
be delivered to the public fill reception facilities (i.e. Tuen Mun Area 38
Fill Bank) for subsequent reuse by other construction projects.
6.3.6
It is estimated that a total of 5,690m3 of
non-inert C&D materials will be generated during the construction
phase. Recyclables from non-inert C&D materials, such as plastics and
packaging materials, will be segregated on site for recycling as far as
practicable. The non-inert C&D materials will be delivered to
landfills (i.e. North East New Territories Landfill (NENT) or the proposed NENT
extension) for disposal, while the recyclables will be sent to the recyclers
for recycling.
6.3.7
In view of the relatively small quantity of C&D
materials to be disposed off-site (i.e. 34,018m3), it is not
expected that the disposal of the anticipated quantity of C&D materials to
the public filling reception facilities and landfills will cause adverse impact
to the operation of these facilities.
6.3.8
The inert C&D materials will primarily be generated
when conducting ELS and slope works, which are anticipated to last for about 45
months during the construction phase. With an estimated 28,328m3
of surplus inert C&D materials to be generated from the Project, about 5
truck trips per day will be required to deliver the surplus inert C&D
materials to the public filling reception facilities during the construction
phase. The non-inert C&D materials may be generated any time
throughout the construction phase (i.e. 72 months). With an estimated
5,690m3 of non-inert C&D materials to be generated from the
Project, about 1 truck trip per day will be required to deliver the non-inert
C&D materials to landfills or recyclers during the construction
phase. In view of the limited truck trips required, adverse environmental
impact (including potential hazard, air and odour emissions, noise and
wastewater discharge) or public transport impact arising from handling,
collection, transportation and reuse/ disposal of C&D materials is not
anticipated with the implementation of good construction site practices.
Chemical
Waste
6.3.9
Chemical waste, as defined under the Waste Disposal
(Chemical Waste) (General) Regulation, includes any unwanted substances
specified under Schedule 1 of the Regulation. Substances likely to be
generated from the construction works of the Project will include:
·
Used paint, engine oils, hydraulic fluids and waste fuel;
·
Spent mineral oils/cleaning fluids from mechanical machinery; and
·
Spent solvents/solutions from equipment cleaning activities.
6.3.10
Chemical wastes will pose environmental, health and
safety hazards if not stored and disposed of in an appropriate manner as
outlined in the Waste Disposal (Chemical Waste) (General) Regulation and
the Code of Practice on the Packaging, Labelling and Storage of Chemical
Wastes. These hazards may include:
·
Toxic effects to workers;
·
Adverse effects on air, water and land from spills; and
·
Fire hazards.
6.3.11
Chemical waste may be generated any time throughout the
construction phase of the Project (i.e. 72 months). The amount of
chemical waste that will arise from the construction activities will be highly
dependent on the Contractor’s on-site maintenance activities and the quantity
of plant and equipment utilised. With respect to the scale of the
construction activities, it is anticipated that the quantity of chemical waste
to be generated will be small (less than a few hundred litres per month).
The chemical waste will be properly stored on site and will be collected by
licensed chemical waste collectors regularly (about 1-2 trucks per month) for
disposal at the licensed chemical waste treatment facilities (i.e. Chemical
Waste Treatment Centre (CWTC) in Tsing Yi).
6.3.12
With the incorporation of suitable arrangements for the
storage, handling, transportation and disposal of chemical wastes under the
requirements stated in the Waste Disposal (Chemical Waste) (General)
Regulation and the Code of Practice on the Packaging, Labelling and
Storage of Chemical Wastes, adverse environmental impact (including
potential hazard, air and odour emissions, noise and wastewater discharge) or
public transport impact arising from the handling, collection, transportation
and disposal of chemical waste is not anticipated.
General
Refuse
6.3.13
The presence of a construction site with workers and
associate site office will result in the generation of general refuse (mainly
consists of food waste, plastic bottles, aluminium cans and waste paper) which
requires off-site disposal. The storage of general refuse has the
potential to give rise to adverse environmental impacts, if not properly
managed. These include odour if the waste is not collected frequently,
windblown litter and visual impact.
6.3.14
It is estimated that a maximum of about 350
construction workers will be working on site at any one time during the
construction phase of the Project. With a general refuse generation rate
of 0.65 kg per worker per day, the maximum amount of general refuse to be
generated will be about 227.5kg per day. General refuse will be produced
any time throughout the construction phase of the Project (i.e. 72 months).
6.3.15
In order to reduce the quantity of general refuse to be
disposed of at landfill, recyclable materials (i.e. paper, plastic bottles,
glass bottles and aluminium cans) will be segregated on site for off-site
recycling. Adequate number of enclosed waste containers will be provided
to facilitate on-site segregation and to avoid over-spillage of waste and/ or
recyclable materials.
6.3.16
The non-recyclable refuse will be placed in bags and
stored in enclosed containers, and disposed of at the landfills (i.e. NENT or
proposed NENT extension) on a daily basis (1 truck trip per day). The
recyclables collected will also be sent to the recyclers regularly for off-site
recycling. Given that the quantity of general refuse to be disposed of at
landfill is small, no adverse impact on the operation of the landfill is
anticipated.
6.3.17
With the implementation of the mitigation measures
recommended in Section 6.5, adverse environmental impacts (including
potential hazard, air and odour emissions, noise and wastewater discharge)
caused by handling, collection, transportation and reuse/ disposal of general
refuse are not expected. Also, as the off-site disposal of the general
refuse is estimated to only generate 1 truck per day, there will be no adverse
impact on the local traffic and public transport.
6.4 Expected Waste Arising during the Operation Phase
6.4.1
No waste is expected to be generated during the
operation phase of the Project. Waste management issues are not expected
during the operation of the Project and thus there would be no adverse
environmental impacts during the operation phase.
Waste
Management Hierarchy
6.5.1
The various waste management options are categorised in
terms of preference from an environmental viewpoint. The options
considered to be most preferable have the least environmental impacts and are
more sustainable in the long term. The hierarchy is as follows:
·
Avoidance and reduction;
·
Re-use of materials;
·
Recovery and recycling; and
·
Treatment and disposal.
6.5.2
The above hierarchy is used to evaluate and select
waste management options. The aim is to reduce waste generation and
reduce waste handling and disposal costs.
6.5.3
The Contractor will consult the relevant authorities
for the final disposal of wastes and, as appropriate, implement the good site
practices and mitigation measures recommended in this EIA Report and those
given below.
·
Nomination of approved personnel to be responsible for good site
practices, arrangements for collection and effective disposal to an appropriate
facility of all wastes generated at the site;
·
Training of site personnel in proper waste management and chemical
handling procedures;
·
Provision of sufficient waste disposal points and regular collection for
disposal;
·
Appropriate measures to reduce windblown/ floating litter and dust
during transportation of waste by either covering trucks or by transporting
wastes in enclosed containers;
·
Separation of chemical wastes for special handling and appropriate
treatment at the Chemical Waste Treatment Centre; and
·
A recording system for the amount of wastes generated, recycled and
disposed of and the disposal sites.
Waste Reduction Measures
6.5.4
Good management and control can prevent the generation
of significant amount of waste. Waste reduction is best achieved at the
planning and design stage, as well as by ensuring the implementation of good
site practices. Recommendations to achieve waste reduction include:
·
Segregation and storage of different types of waste in different
containers, skips or stockpiles to enhance re-use or recycling of waste
materials and their proper disposal;
·
Encourage collection of aluminium cans and waste paper by individual
collectors during construction with separate labelled bins provided to
segregate these wastes from other general refuse by the workforce;
·
Any unused chemicals, and those with remaining functional capacity, be
recycled as far as possible;
·
Use of reusable non-timber formwork to reduce the amount of C&D
materials;
·
Prior to disposal of C&D materials, wood, steel and other metals
will be separated, to the extent practical for re-use and/or recycling to
reduce the quantity of waste to be disposed in a landfill;
·
Proper storage and site practices to reduce the potential for damage or
contamination of construction materials; and
·
Plan and stock construction materials carefully to reduce amount of
waste generated and avoid unnecessary generation of waste.
Construction
Phase
6.5.5
The assessment indicates that with the implementation
of the waste management practices at the construction work site, no adverse
environmental impacts are envisaged for the handling, collection and disposal
of waste arising during the construction phase of the Project.
6.5.6
This Section further describes the good
construction site practices to avoid or further reduce the potential
environmental impacts associated with the handling, collection and disposal of
C&D materials, chemical waste and general refuse arising from the
construction works.
6.5.7
The Contractor must ensure that all the necessary waste
disposal permits or licences are obtained prior to the commencement of the
construction works.
Management of Waste Disposal
6.5.8
The Contractor will open a billing account with the EPD
in accordance with the Waste Disposal (Charges for Disposal of Construction
Waste) Regulation. Every construction waste or public fill load to be
transferred to Government waste disposal facilities (e.g. public fill reception
facilities, sorting facilities and landfills) will be provided with a valid
“chit” which contains the information of the account holder to facilitate waste
transaction recording and billing to the waste producer. A trip-ticket
system will also be established in accordance with DevB TC(W) No. 6/2010
to monitor the disposal of construction waste at landfill and to control
fly-tipping. In addition, all dump trucks should be equipped with GPS or
equivalent system for monitoring of their transportation routes and parking
locations to prohibit illegal dumping and landfilling of C&D
materials. The Contractor should maintain a recording system to record
the amount of C&D materials generated, recycled and disposed of at the
disposal sites as well as the transportation routing and parking locations of
the dump trucks. The trip-ticket system and the abovementioned recording
system will be included as part of the contractual requirements and implemented
by the Contractor(s).
6.5.9
Recyclables (e.g. plastics, cardboard) generated during
the construction phase will be segregated and sent to recycler for recycling as
far as practicable.
6.5.10
As per recommendation under ETWB TC(W) No. 19/2005,
a WMP, with details of the amount of waste generated, recycled and disposed of
(including the disposal sites), will be established and implemented during the
construction phase as part of the EMP. The Contractor will be required to
prepare the EMP and submit it to the Engineer under the Contract for approval
prior to implementation.
Measures for Reduction of C&D Materials
6.5.11
C&D materials will be segregated on-site into
public fill and non-inert C&D materials and stored in different containers
or skips to facilitate re-use of the public fill and proper disposal of the
non-inert C&D materials. Specific areas within the construction sites
will be designated for such segregation and storage, if immediate re-use is not
practicable. Prefabrication will be adopted as far as practicable to
reduce the C&D materials arising.
Measures for Management of Chemical Waste
6.5.12
The Contractor will register as a chemical waste producer
with the EPD. Chemical waste will be handled in accordance with the Code
of Practice on the Packaging, Handling and Storage of Chemical Wastes as
listed below.
6.5.13
Containers used for storage of chemical wastes will:
·
Be suitable for the substance they are holding, resistant to corrosion,
maintained in a good condition, and securely closed;
·
Have a capacity of less than 450L unless the specifications have been
approved by the EPD; and
·
Display a label in English and Chinese in accordance with instructions
prescribed in Schedule 2 of the Regulations.
6.5.14
The storage area for chemical wastes will:
·
Be clearly labelled and used solely for the storage of chemical waste;
·
Be enclosed on at least 3 sides;
·
Have an impermeable floor and bunding, of capacity to accommodate 110%
of the volume of the largest container or 20% by volume of the chemical waste
stored in that area, whichever is the greatest;
·
Have adequate ventilation;
·
Be covered to prevent rainfall entering (water collected within the bund
must be tested and disposed of as chemical waste, if necessary); and
·
Be arranged so that incompatible materials are appropriately separated.
6.5.15
Chemical waste will be disposed of:
·
Via a licensed waste collector; and
·
To a facility licensed to receive chemical waste, such as the CWTC which
also offers a chemical waste collection service, and can supply the necessary
chemical waste storage containers.
Measures for Management of General Refuse
6.5.16
General refuse will be stored in enclosed bins
separately from C&D materials and chemical wastes. General refuse
will be delivered separately from C&D materials and chemical wastes for
offsite disposal on a daily basis to reduce odour, pest and litter
impacts.
6.5.17
Recycling bins will be provided at strategic locations
within the construction site to facilitate recovery of recyclable materials
(including aluminium can, waste paper, glass bottles and plastic bottles) from
the construction site. Materials recovered will be sold for recycling.
Staff Training
6.5.18 At
the commencement of the construction works, training will be provided to
workers on the concepts of site cleanliness and appropriate waste management
procedures, including waste reduction, re-use and recycling.
6.6.1
No residual environmental impact related to waste
management is envisaged during the construction and operation phases of the
Project.
6.7 Environmental Monitoring and Audit
Construction
Phase
6.7.1
It is recommended that regular site inspections of the
waste management practices would be carried out during the construction phase
to determine if wastes are being managed in accordance with the recommended
good site practices and WMP. The site inspections will investigate all
aspects of waste management including waste generation, storage, handling,
recycling, transportation and disposal.
Operation
Phase
6.7.2
Monitoring and audit related waste management is not
required during the operation phase of the Project.
6.8.1
With the implementation of good site practices, adverse
environmental impact (potential hazard, air and odour
emissions, noise and wastewater discharge) arising from
the management and disposal of waste during the construction phase is not
anticipated. Adverse impact relating to waste management during the
operation phase is also not anticipated as no waste is expected to be generated
due to the operation of the Project.
6.8.2
The estimated waste arising and recommended waste
management arrangements during the construction phase of the Project are
summarised in Table 6.3.
Table 6.3
Summary of Estimated Waste Arising
and Recommended Waste Management Arrangements during Construction Phase
|
Type of Waste
|
Waste Generated
|
Approximate Quantity and Timing of Generation
|
Waste Management Arrangements
|
Tentative Transportation Routings to Disposal Sites
|
|
C&D materials
|
Inert C&D materials (e.g. excavated soil, rock, broken
concrete
|
53,688m3 (2025 to 2029)
|
· On-site reuse for
backfilling: 25,360m3
·
Sent
to public fill reception facilities (i.e. Tuen Mun Area 38 Fill Bank):
28,328m3
|
Via Fanling Highway, San Tin Highway, Yuen Long Highway,
Tuen Mun Road, Wong Chu Road, Lung Fu Road, Lung Mun Road
|
|
Non-inert
C&D materials (e.g. vegetation, wood, plastics, cardboard)
|
5,690m3
(2025 to 2030)
|
·
On-site
segregation and off-site recycling for recyclables
·
Disposed
of at landfill sites for non-recyclables (i.e. NENT landfill or proposed NENT
extension)
|
Via San Wan Road, Fanling Highway, Lung Shan Tunnel, Wo
Keng Shan Road
|
|
Chemical
waste
|
Cleaning
fluids, solvents and lubrication oil from construction plant and equipment
|
Few
hundred litres per month (2025 to 2030)
|
·
Disposed
of at CWTC or other licensed chemical waste treatment facilities
|
Via Fanling Highway, San Tin Highway, Tsing Long Highway,
Tsing Sha Highway, Tsing Yi Road
|
|
General
refuse
|
Food
waste, plastic bottles, aluminium cans and waste papers from construction
workers
|
227.5kg/day
(2025 to 2030)
|
·
On-site
segregation and off-site recycling for recyclables
· Disposed of at
landfill sites for non-recyclables (i.e. NENT landfill or proposed NENT
extension)
|
Via San Wan Road, Fanling Highway, Lung Shan Tunnel, Wo
Keng Shan Road
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