|
EIA Ref.
|
EM&A
Log Ref.
|
Recommended
Mitigation Measures
|
Objectives
of the Recommended Measures & Main Concerns to address
|
Who
to implement the measures?
|
Location
of the measures
|
When
to implement the measures?
|
What
requirements or standards for the measures to achieve?
|
|
Air Quality
|
|
S.5.5.6.1
|
A1
|
1) The Contractor
shall follow the procedures and requirements given in the Air Pollution
Control (Construction Dust) Regulation
|
Good
construction site practices to control the dust impact at the nearby
sensitive receivers to within the relevant criteria.
|
Contractor
|
All
construction sites
|
Construction
Stage
|
To control
the dust impact to within the HKAQO and EIAO-TM criteria (Ref. 1-hr and 24-hr
TSP levels are 500 μgm-3 and 260 μgm-3,
respectively)
|
|
S5.5.6.2
|
A2
|
2) Proper
watering of exposed spoil should be undertaken throughout the construction
phase:
Any
excavated or stockpile of dusty material should be covered entirely by
impervious sheeting or sprayed with water to maintain the entire surface wet
and then removed or backfilled or reinstated where practicable within 24
hours of the excavation or unloading;
Any dusty
materials remaining after a stockpile is removed should be wetted with water
and cleared from the surface of roads;
A
stockpile of dusty material should not be extend
beyond the pedestrian barriers, fencing or traffic cones.
The load
of dusty materials on a vehicle leaving a construction site should be covered
entirely by impervious sheeting to ensure that the dusty materials do not
leak from the vehicle;
Where
practicable, vehicle washing facilities with high pressure water jet should
be provided at every discernible or designated vehicle exit point. The area
where vehicle washing takes place and the road section between the washing
facilities and the exit point should be paved with concrete, bituminous
materials or hardcores;
|
Good
construction site practices to control the dust impact at the nearby
sensitive receivers to within the relevant criteria.
|
Contractor
|
All
construction sites
|
Construction
Stage
|
To control
the dust impact to within the HKAQO and EIAO-TM criteria (Ref. 1-hr and 24-hr
TSP levels are 500 μgm -3 and 260
μgm-3, respectively)
|
|
S5.5.6.2
|
A2
|
When
there are open excavation and reinstatement works,
hoarding of not less than 2.4m high should be provided as far as practicable
along the site boundary with provision for public crossing. Good site
practice shall also be adopted by the Contractor to ensure the conditions of
the hoardings are properly maintained throughout the construction period;
The
portion of any road leading only to construction site that is within 30m of a
vehicle entrance or exit should be kept clear of dusty materials;
Surfaces
where any pneumatic or power-driven drilling, cutting, polishing or other
mechanical breaking operation takes place should be sprayed with water or a
dust suppression chemical continuously;
Any area
that involves demolition activities should be sprayed with water or a dust
suppression chemical immediately prior to, during and immediately after the
activities so as to maintain the entire surface wet;
Where a
scaffolding is erected around the perimeter of a building under construction,
effective dust screens, sheeting or netting should be provided to enclose the
scaffolding from the ground floor level of the building, or a canopy should
be provided from the first floor level up to the highest level of the
scaffolding;
Any skip
hoist for material transport should be totally enclosed by impervious
sheeting;
Every
stock of more than 20 bags of cement or dry pulverised fuel ash (PFA) should
be covered entirely by impervious sheeting or placed in an area sheltered on
the top and the 3 sides
|
Good
construction site practices to control the dust impact at the nearby
sensitive receivers to within the relevant criteria.
|
Contractor
|
All
construction sites
|
Construction
Stage
|
To control
the dust impact to within the HKAQO and EIAO-TM criteria (Ref. 1-hr and 24-hr
TSP levels are 500 μgm -3 and 260
μgm-3, respectively)
|
|
S5.5.6.2
|
A2
|
Cement or
dry PFA delivered in bulk should be stored in a closed silo fitted with an
audible high level alarm which is interlocked with the material filling line
and no overfilling is allowed;
Loading,
unloading, transfer, handling or storage of bulk cement or dry PFA should be
carried out in a totally enclosed system or facility, and any vent or exhaust
should be fitted with an effective fabric filter or equivalent air pollution
control system; and
Exposed
earth should be properly treated by compaction, turfing,
hydroseeding, vegetation planting or sealing with
latex, vinyl, bitumen, shotcrete or other suitable surface stabiliser within
six months after the last construction activity on the construction site or
part of the construction site where the exposed earth lies.
|
Good
construction site practices to control the dust impact at the nearby
sensitive receivers to within the relevant criteria.
|
Contractor
|
All
construction sites
|
Construction
Stage
|
To control
the dust impact to within the HKAQO and EIAO-TM criteria (Ref. 1-hr and 24-hr
TSP levels are 500 μgm -3 and 260
μgm-3, respectively)
|
|
S5.5.6.3
|
A3
|
3) The
Contractor should undertake proper watering on all exposed spoil (with at
least 8 times per day) throughout the construction phase.
|
Control
Construction Dust
|
Contractor
|
All
construction sites
|
Construction
Stage
|
To control
the dust impact
|
|
S5.5.6.4
|
A4
|
4) Engineer
to incorporate the controlled measures into the Particular Specification (PS)
for the civil work. The PS should also draw the Contractors attention to the
relevant latest Practice Notes issued by EPD.
|
Control
Construction Dust
|
Engineer
|
All construction
sites
|
Design
Stage
|
Air
Pollution Control (Construction Dust) Regulation
|
|
S5.5.6.4
|
A5
|
5)
Implement regular dust monitoring under EM&A programme during the
construction stage.
|
Monitor the
24 hr and 1hr TSP levels at the representative dust monitoring stations to
ensure compliance with relevant criteria throughout the construction period.
|
Contractor
|
Selected
representative dust monitoring station
|
Construction
Stage
|
Air
Pollution Control (Construction Dust) Regulation
To
control the dust impact to within the HKAQO and EIAO-TM criteria (Ref. 1-hr
and 24-hr TSP levels are 500 μgm -3
and 260 μgm-3, respectively)
|
|
S5.5.7.1
|
A6
|
The
following mitigation measures should be adopted to prevent fugitive dust
emissions for concrete batching plant:
Loading,
unloading, handling, transfer or storage of any dusty materials should be
carried out in totally enclosed system;
All
dust-laden air or waste gas generated by the process operations should be
properly extracted and vented to fabric filtering system to meet the emission
limits for TSP;
Vents for
all silos and cement/pulverised fuel ash (PFA) weighing scale should be
fitted with fabric filtering system;
The
materials which may generate airborne dusty emissions should be wetted by
water spray system;
All
receiving hoppers should be enclosed on three sides up to 3m above unloading
point;
All
conveyor transfer points should be totally enclosed;
All
access and route roads within the premises should be paved and wetted; and
Vehicle
cleaning facilities should be provided and used by all concrete trucks before
leaving the premises to wash off any dust on the wheels and/or body.
|
Monitor the
24 hr and 1hr TSP levels at the representative dust monitoring stations to
ensure compliance with relevant criteria throughout the construction period.
|
Contractor
|
Selected
representative dust monitoring station
|
Construction
Stage
|
Air
Pollution Control (Construction Dust) Regulation
To
control the dust impact to within the HKAQO and EIAO-TM criteria (Ref. 1-hr
and 24-hr TSP levels are 500 μgm -3
and 260 μgm-3, respectively)
|
|
S5.5.2.7
|
A7
|
The
following mitigation measures should be adopted to prevent fugitive dust
emissions at barging point:
All road
surface within the barging facilities will be paved;
Dust
enclosures will be provided for the loading ramp;
Vehicles
will be required to pass through designated wheels wash facilities; and
Continuous water spray at the loading points.
|
Control
construction dust
|
Contractor
|
All
construction sites
|
Construction
Stage
|
Air
Pollution Control (Construction Dust) Regulation
|
|
Construction Noise (Air borne)
|
|
S6.4.10
|
N1
|
1) Use of
good site practices to limit noise emissions by considering the following:
only well-maintained
plant should be operated on-site and plant should be serviced regularly
during the construction programme;
machines
and plant (such as trucks, cranes) that may be in intermittent use should be
shut down between work periods or should be throttled down to a minimum;
plant
known to emit noise strongly in one direction, where possible, be orientated
so that the noise is directed away from nearby NSRs;
silencers
or mufflers on construction equipment should be properly fitted and
maintained during the construction works;
mobile
plant should be sited as far away from NSRs as possible and practicable;
material stockpiles, mobile container site officer and
other structures should be effectively utilised, where practicable, to screen
noise from on-site construction activities.
|
Control
construction airborne noise by means of good site practices
|
Contractor
|
All
construction sites
|
Construction
Stage
|
Noise
Control Ordinance
|
|
S6.4.11
|
N2
|
2) Install
temporary hoarding located on the site boundaries between noisy construction
activities and NSRs. The conditions of the hoardings shall be properly
maintained throughout the construction period.
|
Reduce the
construction noise levels at low-level zone of NSRs through partial
screening.
|
Contractor
|
All construction
sites
|
Construction
Stage
|
Noise
Control Ordinance
Annex 5, EIAO-TM
|
|
S6.4.12
|
N3
|
3) Install
movable noise barriers (typically density @14kg/m2),
acoustic mat or full enclosure close to noisy plants including air
compressor, generators, saw.
|
Screen the
noisy plant items to be used at all construction sites
|
Contractor
|
For plant
items listed in Appendix 6D of the EIA report at all construction sites
|
Construction
Stage
|
Noise
Control Ordinance
Annex 5, EIAO-TM
75 dB(A)
for residential premises
The
movable barrier should achieve at least 5dB(A) and the full enclosure should
be designed to achieve 10dB(A)
|
|
S6.4.13
|
N4
|
4) Select
Quiet plants which comply with the BS 5228 Part 1 or TM standards.
|
Reduce the
noise levels of plant items
|
Contractor
|
For plant
items listed in Appendix 6D of the EIA report at all construction sites
|
Construction
Stage
|
Noise
Control Ordinance
Annex 5, EIAO-TM
|
|
S6.4.14
|
N5
|
5)
Sequencing operation of construction plants where practicable.
|
Operate
sequentially within the same work site to reduce the construction airborne
noise
|
Contractor
|
All
construction sites where practicable
|
Construction
Stage
|
Noise
Control Ordinance
Annex 5, EIAO-TM
|
|
|
N6
|
6)
Implement a noise monitoring under EM&A programme.
|
Monitor the
construction noise levels at the selected representative locations
|
Contractor
|
Selected
representative noise monitoring station
|
Construction
Stage
|
Noise
Control Ordinance
Annex 5, EIAO-TM
75 dB(A)
for residential premises
|
|
Sediment
|
|
|
|
|
|
|
|
|
S7.3
|
S1
|
1) The requirements
as recommended in ETWB TC(W) 34/2002 Management of
Dredged/Excavated Sediment shall be included in the Particular Specification
as appropriate.
|
Develop
sediment disposal arrangement
|
Engineer
|
All
construction sites
|
Design
Stage
|
Waste
Disposal Ordinance
ETWB
TC(W) 34/2002
|
|
Waste Management (Construction Noise)
|
|
S8.3.8
|
WM1
|
Construction
and Demolition Material
The
following mitigation measures should be implemented in handling the waste:
Maintain
temporary stockpiles and reuse excavated fill material for backfilling and
reinstatement;
Carry out
on-site sorting;
Make
provisions in the Contract documents to allow and promote the use of recycled
aggregates where appropriate;
Adopt
Selective Demolition technique to demolish the existing structures and
facilities with a view to recovering broken concrete effectively for
recycling purpose, where possible;
Implement
a trip-ticket system for each works contract to ensure that the disposal of
C&D materials are properly documented and verified; and
Implement
an enhanced W aste Management Plan similar to ETWB
TC(W) No. 19/2005 Environmental Management on Construction Sites to
encourage on-site sorting of C&D materials and to minimize their
generation during the course of construction.
In addition,
disposal of the C&D materials onto any sensitive locations such as
agricultural lands, etc. should be avoided. The Contractor shall propose the
final disposal sites to the Project Proponent and get its approval before
implementation.
|
Good site
practice to minimize the waste generation and recycle the C&D materials
as far as practicable so as to reduce the amount for final disposal
|
Contractor
|
All
construction sites
|
Construction
Stage
|
Land
(Miscellaneous Provisions) Ordinance
Waste
Disposal Ordinance
ETWB
TC(W) 19/2005
|
|
S8.3.9-S8.3.11
|
WM2
|
C&D
Waste
Standard
formwork or pre-fabrication should be used as far as practicable in order to
minimise the arising of C&D materials. The use of more durable formwork
or plastic facing for the construction works should be considered. Use of
wooden hoardings should not be used, as in other projects. Metal hoarding
should be used to enhance the possibility of recycling. The purchasing of
construction materials will be carefully planned in order to avoid over ordering
and wastage.
The
Contractor should recycle as much of the C&D materials as possible
on-site. Public fill and C&D waste should be segregated and stored in
different containers or skips to enhance reuse or recycling of materials and
their proper disposal. Where practicable, concrete and masonry can be crushed
and used as fill. Steel reinforcement bar can be used by scrap steel mills.
Different areas of the sites should be considered for such segregation and
storage.
|
Good site
practice to minimize the waste generation and recycle the C&D materials
as far as practicable so as to reduce the amount for final disposal
|
Contractor
|
All
construction sites
|
Construction
Stage
|
Land
(Miscellaneous Provisions) Ordinance
Waste
Disposal Ordinance
ETWB
TC(W) 19/2005
|
|
S8.2.12-S8.3.15
|
WM3
|
Chemical
Waste
Chemical
waste that is produced, as defined by Schedule 1 of the Waste Disposal
(Chemical Waste) (General) Regulation, should be handled in accordance with
the Code of Practice on the Packaging, Labelling and Storage of Chemical
Wastes.
Containers used for the storage of chemical wastes should 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 450 liters unless the specification has been approved by the
EPD; and display a label in English and Chinese in accordance with
instructions prescribed in Schedule 2 of the regulation.
The
storage area for chemical wastes should be clearly labelled and used solely
for the storage of chemical waste; enclosed on at least 3 sides; have an
impermeable floor and bunding of sufficient
capacity to accommodate 110% of the volume of the largest container or 20 %
of the total volume of waste stored in that area, whichever is the greatest;
have adequate ventilation; covered to prevent rainfall entering; and arranged
so that incompatible materials are adequately separated.
Disposal
of chemical waste should be via a licensed waste collector; be to a facility
licensed to receive chemical waste, such as the Chemical Waste Treatment
Centre which also offers a chemical waste collection service and can supply
the necessary storage containers; or be to a reuser
of the waste, under approval from the EPD.
|
Control the
chemical waste and ensure proper storage, handling and disposal
|
Contractor
|
All
construction sites
|
Construction
Stage
|
Waste
Disposal (Chemical Waste General) Regulation
Code of
Practice on the Packaging, Labelling and Storage of Chemical Waste
|
|
S8.3.16
|
WM4
|
Sewage
Adequate numbers
of portable toilets should be provided for the workers. The portable toilets
should be maintained in a state, which will not deter the workers from
utilizing these portable toilets. Night soil should be collected by licensed
collectors regularly.
|
Proper
handling of sewage from worker to avoid odour, pest and litter impacts
|
Contractor
|
All
construction sites
|
Construction
Stage
|
Waste
Disposal Ordinance
|
|
S8.3.17
|
WM5
|
General
Refuse
General
refuse generated on-site should be stored in enclosed bins or compaction
units separately from construction and chemical wastes.
A
reputable waste collector should be employed by the Contractor to remove
general refuse from the site, separately from construction and chemical
wastes, on a daily basis to minimize odour, pest and litter impacts. Burning
of refuse on construction sites is prohibited by law.
Aluminium
cans are often recovered from the waste stream by individual collectors if
they are segregated and made easily accessible. Separate labelled bins for
their deposit should be provided if feasible.
Office
wastes can be reduced through the recycling of paper if volumes are large
enough to warrant collection. Participation in a local collection scheme
should be considered by the Contractor. In addition, waste separation
facilities for paper, aluminium cans, plastic bottles etc., should be
provided.
Training
should be provided to workers about the concepts of site cleanliness and
appropriate waste management procedure, including reduction, reuse and
recycling of wastes.
|
Minimize
production of the general refuse and avoid odour, pest and litter impacts
|
Contractor
|
All
construction sites
|
Construction
Stage
|
Waste
Disposal Ordinance
|
|
Water Quality (Construction Phase)
|
|
S9.11.1.7
|
W2
|
Land Works
General
construction activities on land should also be governed by standard good
working practice. Specific measures to be written into the works contracts
should include:
wastewater from temporary site facilities should be controlled to prevent
direct discharge to surface or marine waters;
sewage
effluent and discharges from on-site kitchen facilities shall be directed to
Government sewer in accordance with the requirements of the W PCO or
collected for disposal offsite. The use of soakaways shall be avoided;
storm drainage shall be directed to storm drains via
adequately designed sand/silt removal facilities such as sand traps, silt
traps and sediment basins. Channels, earth bunds or sand bag barriers should
be provided on site to properly direct stormwater
to such silt removal facilities. Catchpits and
perimeter channels should be constructed in advance of site formation works
and earthworks;
silt
removal facilities, channels and manholes shall be maintained and any
deposited silt and grit shall be removed regularly, including specifically at
the onset of and after each rainstorm;
temporary
access roads should be surfaced with crushed stone or gravel;
rainwater
pumped out from trenches or foundation excavations should be discharged into
storm drains via silt removal facilities;
measures
should be taken to prevent the washout of construction materials, soil, silt
or debris into any drainage system;
open
stockpiles of construction materials (e.g. aggregates and sand) on site
should be covered with tarpaulin or similar fabric during rainstorms;
manholes
(including any newly constructed ones) should always be adequately covered
and temporarily sealed so as to prevent silt, construction materials or
debris from getting into the drainage system, and to prevent storm run-off
from getting into foul sewers;
discharges of surface run-off into foul sewers must always be prevented in
order not to unduly overload the foul sewerage system;
all vehicles and plant should be cleaned before they leave
the construction site to ensure that no earth, mud or debris is deposited by
them on roads. A wheel washing bay should be provided at every site exit;
wheel
wash overflow shall be directed to silt removal facilities before being
discharged to the storm drain;
the
section of construction road between the wheel washing bay and the public
road should be surfaced with crushed stone or coarse gravel;
wastewater generated from concreting, plastering, internal decoration,
cleaning work and other similar activities, shall be screened to remove large
objects;
vehicle and plant servicing areas, vehicle wash bays and
lubrication facilities shall be located under roofed areas. The drainage in
these covered areas shall be connected to foul sewers via a petrol
interceptor in accordance with the requirements of the W PCO or collected for
off site disposal;
the Contractors
shall prepare an oil / chemical cleanup plan and
ensure that leakages or spillages are contained and cleaned up immediately;
waste oil
should be collected and stored for recycling or disposal, in accordance with
the Waste Disposal Ordinance;
all fuel tanks and chemical storage areas should be
provided with locks and be sited on sealed areas. The storage areas should be
surrounded by bunds with a capacity equal to 110% of the storage capacity of
the largest tank; and
surface run-off from bunded
areas should pass through oil/grease traps prior to discharge to the stormwater system.
|
To control
construction water quality
|
Contractor
|
Land-based
works areas
|
Construction
Stage
|
EIAO-TM
|
|
Ecology (Construction Phase)
|
|
S10.7
|
E4
|
Watering to
reduce dust generation; prevention of siltation of freshwater habitats; Site
runoff should be desilted, to reduce the potential for suspended sediments,
organics and other contaminants to enter streams and standing freshwater
|
Prevent
Sedimentation from Land-based works areas
|
Contractor
|
Land-based
works
areas
|
During
construction
|
TM-Water
|
|
S10.7
|
E5
|
Good site
practices, including strictly following the permitted works hours, using
quieter machines where practicable, and avoiding excessive lightings during
night time
|
Prevent
disturbance to terrestrial fauna and habitats
|
Contractor
|
Land-based
works
areas
|
During
construction
|
|
|
S10.7
|
E8
|
Control
vessel speed
Skipper
training
Predefined and regular routes for working vessels; avoid Brother Islands.
|
Minimise
marine traffic disturbance on dolphins
|
Contractor
|
Marine
Traffic
|
During
construction
|
|
|
Fisheries
|
|
|
|
|
|
|
|
|
S11.7
|
F4
|
Maritime
Oil Spill Response Plan (MOSRP);
Contingency plan.
|
Minimise impacts
on marine water quality impacts
|
Marine
Department
|
HKBCF
|
During
Operation
|
|
|
Landscape & Visual (Detailed Design
Phase)
|
|
S14.3.3.1
|
LV1
|
General
design measures include:
Roadside
planting and planting along the edge of the HKBCF Island is proposed;
Transplanting
of mature trees in good health and amenity value where appropriate and
reinstatement of areas disturbed during construction by compensatory
hydro-seeding and planting;
Protection measures for the trees to be retained during construction activities;
Optimizing the sizes and spacing of the bridge columns; Fine-tuning the
location of the bridge columns to avoid visually-sensitive locations;
Maximizing new tree, shrub and other vegetation planting to compensate tree
felled and vegetation removed;
Providing
planting area around peripheral of HKBCF for tree planting screening effect;
Providing
salt-tolerant native trees along the planter strip at affected seawall and
newly reclaimed coastline;
For
HKBCF, providing aesthetic architectural design on the related buildings
(e.g. similar materials for PCB building facade to Airport buildings, roof
planting and subtle materials for other facilities buildings and so on), and
the related infrastructure (e.g. parapet planting and transparent cover for
elevated footbridges) to provide harmonious atmosphere of the HKBCF; and
Fine-tuning
the sizes of the structural members to minimize the bulkiness of buildings
and adjustment of building arrangement to minimise disturbance to surrounding
vegetation in the HKBCF.
|
Minimise
visual & landscape impact
|
Detailed
designer
|
HKBCF
|
Design
Stage
|
|
|
Landscape & Visual (Construction Phase)
|
|
S14.3.3.3
|
LV2
|
Mitigate
both Landscape and Visual Impacts
G1. Grass-hydroseed bare soil surface and stock pile areas.
G2. Add
planting strip and automatic irrigation system if appropriate at some
portions of bridge footbridge to screen bridge and traffic.
G3. Not
applicable as this is for HKLR.
G4. For
HKBCF, providing aesthetic architectural design on the related buildings
(e.g. similar materials for PCB building facade to Airport buildings, roof
planting and subtle materials for other facilities buildings and so on), and
the related infrastructure (e.g. parapet planting and transparent cover for
elevated footbridges) to provide harmonious atmosphere of the HKBCF
G5.
Vegetation reinstatement and upgrading to disturbed areas
G6.
Maximizing new tree shrub and other vegetation planting to compensate tree
felled and vegetation removed
G7.
Providing planting area around peripheral of HKBCF for tree planting
screening effect;
G8. Plant
salt-tolerant native and shrubs etc along the
planter strip at affected seawall.
G9. Reserve
of loose natural granite rocks for re-use. Provide new coastline to adopt
natural-look by means of using armour rocks in the form of natural rock
materials and planting strip area accommodating screen buffer to enhance
natural-look of the new coastline.
|
Minimise
visual & landscape impact
|
Contractor
|
HKBCF
|
Construction
Stage
|
|
|
S14.3.3.3
|
LV3
|
Mitigate
Visual Impacts
V1.Minimize
time for construction activities during construction period.
V2.Provide
screen hoarding at the portion of the project site / works areas / storage
areas near VSRs who have close low-level views to the Project during HKBCF
construction.
|
|
|
|
|
|
|
EM&A
|
|
|
|
|
|
|
|
|
S15.2.2
|
EM1
|
An Independent
Environmental Checker needs to be employed as per the EM&A Manual.
|
Control
EM&A Performance
|
Project
Proponent
|
All
construction sites
|
Construction
stage
|
EIAO
Guidance
Note
No.4/2002
EIAO-TM
|
|
S15.5 -S15.6
|
EM2
|
1) An
Environmental Team needs to be employed as per the EM&A Manual.
2) Prepare
a systematic Environmental Management Plan to ensure effective implementation
of the mitigation measures.
3) An
environmental impact monitoring needs to be implementing by the Environmental
Team to ensure all the requirements given in the EM&A Manual are fully
complied with.
|
Perform
environmental monitoring & auditing
|
Contractor
|
All
construction sites
|
Construction
stage
|
EIAO
Guidance
Note
No.4/2002
EIAO-TM
|
|
|
|
|
|
|
|
|
|