Table 17.1 Implementation schedule of Recommended
Mitigation Measures
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EIA Ref. |
Recommended Mitigation
Measures |
Objectives of the
Recommended Measures & Main Concern to Address |
Who to implement the
measures? |
Location of the measure |
When to implement the
measures? |
What requirements or
standards for the measure to achieve |
Applicable to Relevant
Designated Elements (see Remark) |
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Cultural Heritage Impact |
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S4.93
& Table 4.2 |
Erection of decorative and sensibly designed hoarding
along the boundary of the works area |
To mitigate the temporary visual
impact due to surface works. |
Contractor |
Works Areas in |
Construction Phase |
EIAO |
DP1, DP2 |
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S4.98
& Table 4.4 |
Sympathetic design shall be incorporated in aboveground
structures such that they could blend into existing setting and environmental
character of the site. |
To mitigate the visual impact
associated from aboveground structures |
MTR |
South Ventilation Shafts, Plant Rooms and Emergency Access
(SOV), Ventilation Shafts and |
Operation Phase |
EIAO |
DP1, DP2 |
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Ecological Impact |
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S5.132 |
The proposed footprint of the IMT casting basin and
associated infrastructure is adjusted. |
To avoid the loss of coral |
MTR |
Shek O casting basin |
Design stage |
EIAO - TM |
N/A |
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S5.133 |
The following mitigation measures in controlling water
quality change shall be implemented: - Installation
of silt curtains around the dredgers, where appropriate, during dredging
activities; - Use
of closed grab dredger during dredging; and -
Reduction of dredging rate |
To minimize changes in water quality impact on marine flora
and fauna |
Contractor |
All reclamation and dredging works areas |
Construction Phase |
EIAO - TM |
DP3, DP4 |
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S5.134 |
Accidental chemical spillage and construction site
run-off to the receiving water bodies, mitigation measures such as removing
the pollutants before discharge into storm drain and paving the section of
construction road between the wheel washing bay and the public road as
suggested in Sections 11.216 and
11.219 to 11.256 of the EIA Report shall be adopted |
To minimize the contamination of
wastewater discharge |
Contractor |
All land based works areas |
Construction Phase |
EIAO - TM |
DP1, DP2, |
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Fisheries Impact |
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S6.57 |
The size of the dredging and underwater blasting areas
shall be minimized as much as possible |
To minimize loss of fishing ground and fisheries resources |
Contractor/ MTR |
All dredging and underwater blasting works areas |
Construction Phase |
EIAO - TM |
DP3, DP4 |
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S6.57 |
Mitigation measures recommended in Sections 11.200 to
11.207, 11.209 to 11.211 and 11.213 to 11.256 of the EIA Report to control water quality, i.e. use of effective site drainage in
land-based construction site and installation of silt curtain surrounding the
dredging point, use of closed grab dredger and reduction of dredging rate
shall be implemented. |
To minimize change in water quality impact on fisheries
resources and operation |
Contractor |
Works areas |
Construction Phase |
EIAO - TM |
DP3, DP4 |
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S6.58 |
Silt curtain shall be deployed at near-shore to fence off fish from
entering the lethal zone during underwater blasting. |
To isolate the impact on fisheries
resources outside the lethal zone |
Contractor |
Underwater blasting works areas |
Construction Phase |
EIAO - TM |
DP3, DP4 |
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S6.59 |
After completion of armour rock filling, the final
surfaces of the protective armour rock layer shall
be checked by ultrasonic sounding survey.
Measures such as removing the rock or breaking the rock into pieces
shall be implemented in case of non-compliance. |
To minimize the IMT protrusion above the seabed |
Contractor |
Along IMT laying works areas |
Construction Phase |
EIAO - TM |
DP3, DP4 |
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Landscape and Visual Impact |
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Construction Phase |
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CM1 - Trees unavoidably affected by the works shall be
transplanted as far as possible in accordance with ETWB TC(W)
3/2006 – Tree Preservation. |
Transplanting and reuse of affected trees. |
MTR |
Works Sites |
Construction Phase |
EIAO - TM and ETWB TC(W) 3/2006 |
DP1,DP2 |
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CM2a - Compensatory tree planting shall be provided in accordance
with ETWB TC(W) 3/2006 – Tree Preservation to
compensate for felled trees and maintained until end of the establishment
period. |
Compensation for the removal of existing trees due to
the Project. |
MTR |
Works Sites |
Construction Phase |
EIAO - TM and ETWB TC(W) 3/2006 |
DP1,DP2 |
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CM2b - Compensatory shrub planting shall be provided to
compensate for the loss of shrub planting in amenity areas. |
Compensation for the removal of existing shrub planting
due to the Project. |
MTR |
Works Sites |
Construction Phase |
EIAO - TM |
DP1,DP2 |
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CM3 - Control of night-time lighting glare |
Minimize the night time glare due to the Project during
construction phase |
MTR |
Works Sites |
Construction Phase |
EIAO - TM |
DP1,DP2 |
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CM4 - Erection of decorative screen hoarding compatible
with the surrounding setting. |
Minimize the visual impact of the Project during
construction phase |
MTR |
Works Sites |
Construction Phase |
EIAO - TM |
DP1,DP2 |
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CM5 - Management of facilities on work sites which give
control on the height and disposition/arrangement of all facilities on the
works site to minimize visual impact to adjacent VSRs. |
Control of height and deposition/arrangement of
temporary facilities in works areas |
MTR |
Works Sites |
Construction Phase |
EIAO - TM |
DP1,DP2 |
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CM6 - All hard and soft landscape areas disturbed temporarily
during construction shall be reinstated on like-to-like basis to the
satisfaction of the relevant Government Departments. |
Reinstatement of temporary works areas. |
MTR |
Works Site |
Construction Phase |
EIAO - TM |
DP1,DP2 |
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Operation Phase |
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OM1 - Aesthetically pleasing design as regard to the
form, material and finishes shall be incorporated to MTR Entrance, Plant Buildings,
Ventilation Shafts and associated engineering facilities and HKB so as to
blend in the structures to the adjacent landscape and visual context. |
Enhance the landscape and visual amenity value of the
Project and minimize the potential visual impact during operation phase. |
MTR |
NOV, SOV, EXH MTR Entrances, Plant Building,
Ventilation Shafts, EAP, ADM Ventilation Shafts and Cooling Tower, HKB and
associated engineering facilities, |
Detailed Design and Operation Phase |
EIAO - TM |
DP1 |
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OM2 - Tree Planting shall be incorporated to provide
screening to |
Enhance the landscape and visual amenity value of the Project
and minimize the potential visual impact during operation phase. |
MTR |
NOV, SOV, EXH Entrances, |
Detailed Design and Operation Phase |
EIAO - TM |
DP1 |
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OM3 - Green Roof shall be proposed to NOV, SOV and |
Enhance the landscape and visual amenity value of the
Project and minimize the potential visual impact during operation phase. |
MTR |
NOV, SOV, Plant Buildings to the east of the EXH |
Detailed Design and Operation Phase |
EIAO - TM |
DP1 |
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OM4 - Climbers shall be incorporated to the ventilation
buildings to soften the structure. |
Enhance the landscape and visual amenity value of the
Project and minimize the potential visual impact during operation phase. |
MTR |
NOV |
Detailed Design and Operation Phase |
EIAO - TM |
DP1 |
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OM5 - Landscaped mound is proposed to screen the EXH
Ventilation Shafts. |
Enhance the landscape and visual amenity value of the Project
and minimize the potential visual impact during operation phase. |
MTR |
EXH Ventilation Shafts |
Detailed Design and Operation Phase |
EIAO - TM |
DP1 |
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OM6 - Vertical Greening shall be incorporated on the
facade of |
Enhance the landscape and visual amenity value of the
Project and minimize the potential visual impact during operation phase. |
MTR |
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Detailed Design and Operation Phase |
EIAO - TM |
DP1 |
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Construction Dust Impact |
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Barging facilities: (i) Transportation of spoils to the
barging point – Pave all road surfaces within the
barging facilities and provide watering once along with the haul road for every
working hours to reduce dust emission by 91.7%. This dust suppression efficiency is derived based on the
average haul road traffic, average evaporation rate and an assumed
application intensity of 1.0 L/m2 once every working hour. Any
potential dust impact and watering mitigation would be subject to the actual
site condition. For example, a
construction activity that produces inherently wet conditions or in cases
under rainy weather, the above water application intensity may not be
unreservedly applied. While the above watering frequency is to be followed,
the extent of watering may vary depending on actual site conditions but
should be sufficient to maintain an equivalent intensity of no less than
1.0L/m2 to achieve the removal efficiency. The dust levels would
be monitored and managed under an EM&A programme
as specified in the EM&A Manual. (ii) Unloading of spoil materials –
Undertake the unloading process within a 3-sided screen with top tipping
hall. Provide water spraying and
flexible dust curtains at the discharge point for dust suppression. (iii) Vehicles
leaving the barging facilities – Pass vehicles through the wheel washing
facilities provided at site exits. |
To minimize dust impacts |
Contractor |
All barging points |
Construction phase |
APCO |
N/A |
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S8.63 |
For concrete batching plant, the requirements and
mitigation measures stipulated in the Guidance
Note on the Best Practicable Means for Cement Works (Concrete Batching Plant)
BPM 3/2(93) shall be followed and implemented. |
To minimize dust
impact |
Contractor |
Concrete Batching Plant |
Construction phase |
APCO |
N/A |
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During operation of concrete batching plant: (i)
Unloading of
aggregates from the tipper trucks to receiving hopper – unload the aggregates
from the tipper trucks to the receiving hopper equipped with enclosures on 3
sides and top cover, and water spraying system. (ii)
Unloading of cement
and PFA from tankers into the silo – Directly load the cement and PFA into
the silo via a flexible duct. Install
dust collectors at cement/PFA silos. (iii)
Storage of
aggregates in overhead storage bins – Store the aggregates in fully enclosed
overhead storage bins. Cover the top
of overhead storage bins with cladding.
Install water spraying system at the top of storage bins for watering
the aggregates, and fully enclose aggregates storage bins. (iv)
Weighing and
batching of cementitious materials – Perform the
whole process of weighing and mixing in a fully enclosed environment. Equip all the mixers with dust collectors. (v)
Loading of concrete
from mixer into transit mixer of a truck – Directly load the concrete from
the mixer into the transit mixer of a truck in “wet form”. (vi)
Tipper trucks and cement tankers leaving the Concrete Batching Plant – Haul road within the site is unpaved.
Install wheel washing pit at the gate of the concrete batching plant. (vii) Transportation of materials within the plant –
Provide watering twice a day would be provided. |
To minimize dust impacts |
Contractor |
Concrete Batching Plant |
Construction phase |
APCO and Guidance
Note on the Best Practicable Means for Cement Works (Concrete Batching Plant)
BPM 3/2(93) |
N/A |
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S8.89 |
Watering once every working hour on active works areas,
exposed areas and paved haul roads to reduce dust emission by 91.7%. This dust suppression efficiency is derived based on the
average haul road traffic, average evaporation rate and an assumed
application intensity of 1.7 L/m2 for Kowloon side and 1.0 L/m2
for Hong Kong side once every working hour. Any potential dust impact and
watering mitigation would be subject to the actual site condition. For example, a construction activity that
produces inherently wet conditions or in cases under rainy weather, the above
water application intensity may not be unreservedly applied. While the above watering frequency is to be
followed, the extent of watering may vary depending on actual site conditions
but should be sufficient to maintain an equivalent intensity of no less than
1.7 L/m2 for Kowloon side and 1.0 L/m2 for Hong Kong sideto achieve the removal efficiency. The dust levels would be monitored and
managed under an EM&A programme as specified in
the EM&A Manual. |
To minimize dust
impact |
Contractor |
Works areas |
Construction phase |
APCO |
DP1, DP2 |
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S8.89 |
Enclosing the
unloading process at barging point by a 3-sided screen with top tipping hall,
provision of water spraying and flexible dust curtains to reduce dust
emission |
To minimize dust
impact |
Contractor |
All barging points |
Construction phase |
APCO |
N/A |
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S8.90 |
Dust suppression measures stipulated in the Air
Pollution Control (Construction Dust) Regulation and good site practices: Ÿ Use of regular
watering to reduce dust emissions from exposed site surfaces and unpaved
roads, particularly during dry weather. Ÿ Use of
frequent watering for particularly dusty construction areas and areas close
to ASRs. Ÿ Side
enclosure and covering of any aggregate or dusty material storage piles to
reduce emissions. Where this is not
practicable owing to frequent usage, watering shall be applied to aggregate
fines. Ÿ Open
stockpiles shall be avoided or covered.
Where possible, prevent placing dusty material storage piles near
ASRs. Ÿ Tarpaulin
covering of all dusty vehicle loads transported to, from and between site
locations. Ÿ Establishment
and use of vehicle wheel and body washing facilities at the exit points of
the site. Ÿ Provision
of wind shield and dust extraction units or similar dust mitigation measures
at the loading area of barging point, and use of water sprinklers at the
loading area where dust generation is likely during the loading process of
loose material, particularly in dry seasons/ periods. Ÿ Provision
of not less than Ÿ Imposition
of speed controls for vehicles on site haul roads. Ÿ Where
possible, routing of vehicles and positioning of construction plant shall be
at the maximum possible distance from ASRs. Ÿ Every
stock of more than 20 bags of cement or dry pulverised fuel ash (PFA) shall be
covered entirely by impervious sheeting or placed in an area sheltered on the
top and the 3 sides. Ÿ Instigation
of an environmental monitoring and auditing program to monitor the
construction process in order to enforce controls and modify method of work
if dusty conditions arise. |
To minimize dust impacts |
Contractor |
Works areas |
Construction phase |
APCO and Air Pollution Control (Construction
Dust) Regulation |
DP1, DP2 |
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Airborne Noise Impact |
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Construction Phase |
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S9.55 |
The following good site practices shall be implemented: Ÿ Only
well-maintained plant shall be operated on-site and plant shall be serviced
regularly during the construction program Ÿ Silencers
or mufflers on construction equipment shall be utilized and shall be properly
maintained during the construction program Ÿ Mobile
plant, if any, shall be sited as far from NSRs as possible Ÿ Machines
and plant (such as trucks) that may be in intermittent use shall be shut down
between work periods or shall be throttled down to a minimum Ÿ Plant
known to emit noise strongly in one direction shall, wherever possible, be
orientated so that the noise is directed away from the nearby NSRs Ÿ Material stockpiles and other structures shall be effectively utilized, wherever practicable, in screening noise from on-site construction activities. |
To minimize construction noise
impact |
Contractor |
Works areas |
Construction phase |
EIAO-TM |
DP1, DP2, DP3, DP4 |
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S9.56 & Table 9.16 |
The following quiet PME shall be used: ·
Crane lorry, mobile ·
Crane, mobile ·
Asphalt paver ·
Backhoe with hydraulic breaker ·
Breaker, excavator mounted (hydraulic) ·
Hydraulic breaker ·
Concrete lorry mixer ·
Poker, vibrator, hand-held ·
Concrete pump ·
Crawler crane, mobile ·
Mobile crane ·
Dump truck ·
Excavator ·
Truck ·
Rock drill ·
Lorry ·
Wheel loader ·
Roller vibratory |
To minimize construction noise impact |
Contractor |
Works areas at: · Hung Hom · Cross
Harbour section up to Breakwater of CBTS · Breakwater
of CBTS to SOV · SOV to
EXH · EXH · EXH to
open space at the junction of · Open
space at the junction of ·
South of ADM to Overrun Tunnel |
Construction phase |
EIAO-TM |
DP1, DP2, DP3, DP4 |
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S9.58 – S9.59 & Table 9.17 |
Movable noise
barrier shall be used for the following PME: ·
Air compressor ·
Asphalt paver ·
Backhoe with hydraulic breaker ·
Bar bender ·
Bar bender and cutter (electric) ·
Breaker, excavator mounted ·
Concrete pump ·
Concrete pump, stationary/lorry mounted ·
Excavator ·
Generator ·
Grout pump ·
Hand held breaker ·
Hydraulic breaker ·
Saw, concrete |
To minimize construction noise impact |
Contractor |
Works areas at: · Cross
Harbour section up to Breakwater of CBTS · Breakwater
of CBTS to SOV · SOV to
EXH · EXH · EXH to
open space at the junction of · Open
space at the junction of ·
South of ADM to Overrun Tunnel |
Construction phase |
EIAO-TM |
DP1, DP2 |
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S9.60 & Table 9.17 |
Noise insulating
fabric shall be used for ·
Drill rig, rotary type ·
Piling, diaphragm wall, bentonite filtering
plant ·
Piling, diaphragm wall, grab and chisel ·
Piling, diaphragm wall, hydraulic extractor ·
Piling, large diameter bored, grab and
chisel ·
Piling, hydraulic extractor ·
Piling, earth auger, auger ·
Rock drill, crawler mounted (pneumatic) |
To minimize construction noise impact |
Contractor |
Works areas at: · Cross Harbour
section up to Breakwater of CBTS · Breakwater
of CBTS to SOV · SOV to
EXH · EXH · EXH to
open space at the junction of · Open
space at the junction of ·
South of ADM to Overrun Tunnel |
Construction phase |
EIAO-TM |
DP1, DP2 |
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Operation Phase |
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S9.70 & Tables 9.11 – 9.15 |
Properly design the fixed plant to meet the maximum
permissible sound power levels (Max SWLs) listed in Tables 9.11 to 9.15. |
To comply with the noise criteria |
MTR |
NOV, SOV, EXH and ADM |
Detailed design and operation phases |
EIAO-TM and NCO |
DP1 |
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S9.70 |
The following noise reduction measures shall be considered
as far as practicable during detailed design of fixed plant equipment: Ÿ Choose
quieter plant such as those which have been effectively silenced. Ÿ Include
noise levels specification when ordering new plant (including chillier and
E/M equipment). Ÿ Locate
fixed plant/louver away from any NSRs as far as practicable. Ÿ Locate
fixed plant in walled plant rooms or in specially designed enclosures. Ÿ Locate
noisy machines in a basement or a completely separate building. Ÿ Install
direct noise mitigation measures including silencers, acoustic louvers and
acoustic enclosure where necessary. Ÿ Develop and implement a regularly scheduled plant maintenance programme so that equipment is properly operated and serviced in order to maintain controlled level of noise. The programme shall be implemented by properly trained personnel. |
To minimize fixed noise impacts |
MTR |
NOV, SOV, EXH and ADM |
Detailed design and operation phases |
EIAO-TM and NCO |
DP1 |
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Groundborne
Noise Impact |
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S10.70 |
Prior to
the operation phase of the Project, a commissioning test will be conducted to
ensure compliance of the operational ground-borne noise levels with the
adopted noise criteria. |
To
minimize operation ground-borne noise impacts |
MTR |
Tunnel alignment |
Detailed
design and operation Phase |
NCO |
DP1 |
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Water Quality Impact |
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Construction Phase |
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S11.200
& 201 |
All excavation and tunnel
construction works will be undertaken within the cofferdam and there will be
no open dredging. Removal of fender piles of Hung Hom
Bypass and minor marine piling works will be carried out prior to the
construction of the elevated platform adjacent to the cofferdam at Hung Hom Landfall.
Reinstatement of the fender piles will be carried out upon completion
of tunnel section. Potential release of sediment due to abovementioned works
could be minimized by installation of silt curtains surrounding the works
area as appropriate. All excavation and tunnel construction works will be
undertaken within the cofferdam and there will be n. No open dredging shall
be allowed. |
To
minimize release of sediment and contaminants during temporary reclamation. |
Contractor |
Marine works at Hung Hom Landfall |
Construction
Phase |
EIAO-TM, WPCO |
DP3 |
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S11.202 |
All temporary reclamation works will adopt an approach
where temporary seawalls will first be formed to enclose each phase of the
temporary reclamation. Installation of
diaphragm wall on temporary reclamation as well as any bulk filling will
proceed behind the completed seawall.
Any gaps that may need to be provided for marine access will be
shielded by silt curtains to control sediment plume dispersion away from the
site. Demolition of temporary
reclamation including the demolition of the diaphragm wall and dredging to
the existing seabed levels will also be carried out behind the temporary
seawall. Temporary seawall will be
removed after completion of all excavation and dredging works for demolition
of the temporary reclamation. |
To
minimize loss of fines and contaminants during temporary reclamations |
Contractor |
All temporary reclamation
works areas |
Construction
Phase |
EIAO-TM, WPCO |
DP3, DP4 |
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S11.
202 |
During construction of the temporary reclamation,
temporary seawall will be partially constructed to protect the nearby
seawater intakes from further dredging activities. For example, the seawalls along the
southeast and northeast boundaries of PW1.1 shall be constructed first (above
high water mark) so that the seawater intake at the inner water would be
protected from the impacts from the remaining dredging activities along the
northwest boundary. |
To
minimize water quality impact upon the cooling water intakes in CBTS from
temporary reclamation works |
Contractor |
Temporary reclamation works areas in CBTS |
Construction
Phase |
EIAO-TM, WPCO |
DP3, DP4 |
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S11.
202 |
Dredging will be carried out by closed grab dredger to
minimize release of sediment and other contaminants during dredging. |
To
minimize loss of fines and contaminants during dredging in CBTS |
Contractor |
All temporary reclamation and dredging works areas within
CBTS |
Construction
Phase |
EIAO-TM, WPCO |
DP3, DP4 |
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S11.
202 & Table 11.25 |
Silt curtains will be deployed to fully enclose the
closed grab dredger and shall be extended from water surface to the seabed,
as far as practicable, during any dredging operation. |
To
minimize loss of fines and contaminants during dredging in CBTS |
Contractor |
All temporary reclamation and dredging works areas within
CBTS |
Construction
Phase |
EIAO-TM, WPCO |
DP3, DP4 |
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S11.
202 & Table 11.23 |
Silt screens will be installed at the cooling water
intakes within the CBTS during the temporary reclamation period. |
To
minimize water quality impact upon the cooling water intakes in CBTS from
marine construction activities |
Contractor |
Cooling water intakes inside CBTS |
Construction
Phase |
EIAO-TM, WPCO |
DP3, DP4 |
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S11.
203 & Table 11.24 |
No more than two dredgers (of about 8 m3
capacity each) shall be operated for dredging within the typhoon shelter at
any time for the tunnel construction works.
Moreover, the combined dredging rate for all concurrent dredging works
(include dredging works for concurrent projects such as WDII and CWB) to be
undertaken within the CBTS shall not exceed 6,000 m3 per day (and
375 m3 per hour with a maximum working period of 16 hours per day)
throughout the entire construction period. |
To
minimize loss of fines and contaminants during dredging in CBTS |
Contractor |
All dredging works areas within CBTS |
Construction
Phase |
EIAO-TM, WPCO |
DP3, DP4 |
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S11.
204 |
Bulk filling along the IMT tunnel alignment for SCL
shall be carried out after the bulk dredging works along the IMT alignment
are completed. Hence, bulk dredging
and bulk filling along the IMT alignment shall not be undertaken at the same
time. |
To
minimize loss of fines and contaminants during IMT construction |
Contractor |
Marine works areas in |
Construction
Phase |
EIAO-TM, WPCO |
DP3, DP4 |
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S11.
204 |
Dredging for IMT and SCL2 construction shall be carried
out by closed grab dredger to minimize release of sediment and other
contaminants during dredging. |
To
minimize loss of fines and contaminants during dredging in the |
Contractor |
Marine works areas in |
Construction
Phase |
EIAO-TM, WPCO |
DP3, DP4 |
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S11.
204 |
No more than one closed grab dredger shall be operated
outside the CBTS in the open harbor for SCL construction. |
To
minimize loss of fines and contaminants from dredging in the |
Contractor |
Marine works areas in |
Construction
Phase |
EIAO-TM, WPCO |
DP3, DP4 |
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S11.
204 |
Dredging for temporary reclamation outside the CBTS (at
SCL2) shall not be carried out concurrently with the dredging / filling works
for IMT construction. |
To
minimize loss of fines and contaminants from dredging / filling in the |
Contractor |
Marine works areas in |
Construction
Phase |
EIAO-TM, WPCO |
DP3, DP4 |
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S11.
205 |
Floating type or frame type silt curtains shall be
deployed around the dredging operations within 200m from the Hung
Hom landfall. |
To
minimize loss of fines and contaminants from dredging in the |
Contractor |
Construction of northern IMT segment in the near shore
region within 200 m from the Hung Hom landfall |
Construction
Phase |
EIAO-TM, WPCO |
DP3, DP4 |
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S11.
205 & Table 11.23 |
Silt screens shall be installed at the cooling water
intakes for East Rail Extension, Metropolis and Hong Kong Coliseum (namely
21, 34 and 35 respectively) which are in close vicinity of the northern IMT
segment. |
To
protect the beneficial use of water intakes along the |
Contractor |
Construction of northern IMT segment in the near shore
region within 200 m from the Hung Hom landfall |
Construction
Phase |
EIAO-TM, WPCO |
DP3, DP4 |
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S11.207 |
If underwater blasting is required for SCL
construction, the following precautionary / mitigation measures shall be
adopted: ·
Charge shall be placed in cores within the
rock in order that there will be no blast directly into the water. ·
In terms of the construction sequence,
sediment dredging (within the planned IMT works area) shall be conducted
prior to any underwater blasting. |
To
protect the water quality in |
Contractor |
Marine works areas in |
Construction
Phase |
EIAO-TM, WPCO |
DP3, DP4 |
|||
|
Silt screens shall be installed at the WSD Flushing
Water Intakes at Kowloon Station, Tai Wan, Quarry Bay and Wan Chai (namely Intakes 14, WSD9, WSD17 and A respectively)
during any dredging / filling works outside the CBTS for temporary
reclamation at SCL2 or for IMT construction |
To
protect the beneficial use of flushing water intakes in |
Contractor |
Flushing water intake points in |
Construction
Phase |
EIAO-TM, WPCO |
DP3, DP4 |
||||
|
S11.210
- S11.211 & Table 11.24 |
If the marine works for SCL are to be carried out
concurrently with other dredging / filling activities in the Victoria Harbour, the production rates of any dredging / filling
work to be undertaken outside the CBTS for SCL construction in the open harbour (including temporary reclamation at SCL2 and IMT
construction) shall not exceed 2,500 m3 per day at any time
throughout the entire construction period. The hourly production rate for
dredging or bulk filling within the open Victoria Harbour
(outside the breakwater of CBTS) shall not exceed 156 m3 per hour
(if there are other concurrent marine works in Victoria Harbour)
and the maximum working hour for the dredging / bulk filling works shall be
16 hours per day. Silt screen shall be deployed at the Kowloon Station Intake
to minimize the water quality impact. If the marine works for SCL are to be carried out with
no other concurrent dredging / filling activities in the Victoria Harbour, the production rates of any dredging / filling
work to be undertaken outside the CBTS for SCL construction in the open harbour (including temporary reclamation at SCL2 and IMT
construction) shall not exceed 4,500 m3 per day at any time
throughout the entire construction period. The hourly production rate for
dredging or bulk filling within the open Victoria Harbour
(outside the breakwater of CBTS) shall not exceed 281 m3 per hour
(if there is no other concurrent marine works in Victoria Harbour)
and the maximum working hour for the dredging / bulk filling works shall be
16 hours per day. Silt screen shall be deployed at the Kowloon Station Intake
to minimize the water quality impact. |
To
minimize loss of fines and contaminants from dredging / filling in the |
Contractor |
Marine works areas in |
Construction
Phase |
EIAO-TM, WPCO |
DP3, DP4 |
|||
|
S11.215 |
The following good site practices shall be undertaken during filling and dredging: Ÿ mechanical
grabs, if used, shall be designed and maintained to avoid spillage and sealed
tightly while being lifted; Ÿ all
vessels shall be sized so that adequate clearance is maintained between
vessels and the seabed in all tide conditions, to ensure that undue turbidity
is not generated by turbulence from vessel movement or propeller wash; Ÿ all
hopper barges and dredgers shall be fitted with tight fitting seals to their
bottom openings to prevent leakage of material; Ÿ construction
activities shall not cause foam, oil, grease, scum, litter or other
objectionable matter to be present on the water within the site or dumping
grounds; Ÿ loading of
barges and hoppers shall be controlled to prevent splashing of dredged
material into the surrounding water.
Barges or hoppers shall not be filled to a level that will cause the
overflow of materials or polluted water during loading or transportation; Ÿ before
commencement of the temporary reclamation works, the holder of the
Environmental Permit shall submit plans showing the phased construction of
the reclamation, design and operation of the silt curtain. |
To
minimize loss of fines and contaminants from dredging / filling |
Contractor |
Marine works areas |
Construction
Phase |
EIAO-TM, WPCO |
DP3, DP4 |
|||
|
S11.216 |
Ÿ Temporary
storage of construction materials (e.g. equipment, filling materials,
chemicals and fuel) and temporary stockpile of construction and demolition
materials shall be located well away from the seawater front and storm
drainage during carrying out of the works. Ÿ Stockpiling
of construction and demolition materials and dusty materials shall be covered
and located away from the seawater front and storm drainage. Ÿ Construction
debris and spoil shall be covered up and/or disposed of as soon as possible
to avoid being washed into the nearby receiving waters. |
To
minimize release of construction wastes from construction works at or close
to the seafront |
Contractor |
Construction works at or close to
the seafront |
Construction
Phase |
EIAO-TM, WPCO |
DP1, DP2, DP3, DP4 |
|||
|
S11.217 |
Ÿ The
potential release of sediment or excavated materials could be controlled
through the installation of silt curtains surrounding the working area as
necessary. Ÿ Spoil
shall be collected by sealed hopper barges for proper disposal. |
To
minimize release of sediment and pollutants from marine piling activities |
Contractor |
Marine piling works areas |
Construction
Phase |
EIAO-TM, WPCO |
DP3 |
|||
|
S11.218 |
Silt screens are recommended to be deployed at the
seawater intakes during the construction works period. Regular maintenance of the silt screens and
refuse collection shall be performed at the silt screens at regular intervals
on a daily basis. The Contractor shall
be responsible for keeping the water behind the silt screen free from
floating rubbish and debris during the impact monitoring period. |
To
avoid the pollutant and refuse entrapment problems at the silt screens to be
installed at the water intakes |
Contractor |
Proposed silt screens at water intakes. |
Construction
Phase |
EIAO-TM, WPCO |
DP3, DP4 |
|||
|
S11.219 |
It is recommended that collection and removal of
floating refuse shall be performed within the marine construction areas at
regular intervals on a daily basis.
The Contractor shall be responsible for keeping the water within the
site boundary and the neighbouring water free from
rubbish during the dredging works. |
To
minimize water quality impacts from illegal dumping and littering from marine
vessels and runoff from the coastal areas |
Contractor |
Marine works areas |
Construction
Phase |
EIAO-TM, WPCO, WDO |
DP3, DP4 |
|||
|
S11.220
& 221 |
Any wastewater including washdown waters and any concrete curing waters generated
from the casting basin shall be drained to the wastewater treatment
unit. Appropriate treatment process
such as sedimentation and oil removal shall be employed for the wastewater
treatment units so that any discharge from the casting basin will comply with
standards stipulated in the TM-DSS. Recovered oil from any oil interceptor
shall be properly contained, labeled and stored on site prior to collection
by licensed collectors for disposal. During the flooding
of the basin with seawater (accomplished by pumps) no escape of water could
occur as the cofferdam will still be in place. Prior to opening a channel through the
cofferdam, water inside the basin will be skimmed of floating debris. A
period of settling of 24 hours before opening the basin to the sea would
allow much of the suspended material to settle out. The channel through the cofferdam will only
be opened with the approval of the Site Engineer to the effect that all
reasonable steps had been taken to remove contaminants. |
To
minimize water quality impacts from the washdown,
flooding and draining operation at |
Contractor |
|
Construction
Phase |
EIAO-TM, WPCO |
N/A |
|||
|
S11.222
to 11.245 |
The site practices outlined in ProPECC PN 1/94 “Construction Site
Drainage” shall be followed where practicable. |
To
minimize water quality impacts from construction site runoff and general
construction activities |
Contractor |
Works areas |
Construction
Phase |
EIAO-TM, WPCO, TM-DSS, WDO, ProPECC
PN 1/94 |
DP1, DP2 |
|||
|
S11.246
& 11.247 |
Construction work force sewage
discharges on site are expected to be discharged to the nearby existing trunk
sewer or sewage treatment facilities.
If disposal of sewage to public sewerage system is not feasible,
appropriate numbers of portable toilets shall be provided by a licensed
contractor to serve the construction workers over the construction site to
prevent direct disposal of sewage into the water environment. The Contractor shall also be responsible
for waste disposal and maintenance practices. |
To
minimize water quality impacts due to sewage generated from construction
workforce |
Contractor |
Works areas |
Construction
Phase |
EIAO-TM, WPCO, TM-DSS, WDO |
DP1, DP2 |
|||
|
S11.248 |
In case seepage of uncontaminated groundwater occurs,
groundwater shall be pumped out from the works areas and discharged into the
storm system via silt removal facilities.
Uncontaminated groundwater from dewatering process shall also be
discharged into the storm system via silt traps. |
To
minimize impact from discharge of uncontaminated groundwater |
Contractor |
Works areas |
Construction
Phase |
EIAO-TM, WPCO, TM-DSS |
DP1, DP2 |
|||
|
S11.249 |
If land contaminated site is
identified from the Stage 2 SI work (refer to Sections 11.188 to 11.191 of the EIA Report), the following
mitigation measures shall be implemented for the identified contaminated
area. Any transient pile of
contaminated soil / material shall be minimized and shall be bottom-lined, bunded and covered with impervious
membrane during rain event to avoid generation of contaminated runoff. Appropriate intercepting channels and
partial shelters shall be provided where necessary to prevent rainwater from
collecting within trenches or footing excavations. Any contaminated water and
wastewater generated from the decontamination process shall not be directly
discharged to public sewers or site drainage. They shall be treated or tanked
away as necessary for proper disposal in compliance with the TM-DSS. |
To
control site run-off generated from any potential contaminated works areas. |
Contractor |
Any potential contaminated areas to be identified from the
Stage 2 SI |
Construction
Phase |
EIAO-TM, WPCO, TM-DSS |
DP1, DP2 |
|||
|
S11.250
& S11.251 |
No direct discharge of
groundwater from contaminated areas shall be adopted. If land contamination impact and generation
of contaminated groundwater is identified from the Stage 2 SI works (refer to
Sections 11.189 to 11.192 of the EIA Report), the following mitigation measures shall be
adopted. Any contaminated groundwater
shall be either properly treated in compliance with the requirements of the
TM-DSS or properly recharged into the ground.
If wastewater treatment is deployed for treating the contaminated
groundwater, the wastewater treatment unit shall deploy suitable treatment
processes (e.g. oil interceptor / activated carbon) to reduce the pollution
level to an acceptable standard and remove any prohibited substances (such as
TPH) to an undetectable range. All treated effluent from the wastewater
treatment plant shall meet the requirements as stated in TM-DSS and shall be
discharged into the foul sewers. If groundwater recharging wells are deployed, the
recharging wells shall be installed as appropriate for recharging the
contaminated groundwater back into the ground. The recharging wells shall be
selected at places where the groundwater quality will not be affected by the
recharge operation as indicated in Section 2.3 of the TM-DSS. The baseline groundwater quality shall be
determined prior to the selection of the recharge wells, and submit a working
plan (including the laboratory analytical results showing the quality of
groundwater at the proposed recharge location(s) as well as the pollutant
levels of groundwater to be recharged) to EPD for agreement. Pollution levels
of groundwater to be recharged shall not be higher than pollutant levels of
ambient groundwater at the recharge well. Prior to recharge, any prohibited
substance such as TPH products shall be removed as necessary by installing
the petrol interceptor. The Contractor shall apply for a discharge licence under the WPCO through the Regional Office of EPD
for groundwater recharge operation or discharge of treated groundwater. |
To
minimize potential water quality impact from discharge of contaminated
groundwater |
Contractor |
Any potential contaminated areas to be identified from the
Stage 2 SI |
Construction
Phase |
EIAO-TM, WPCO, TM-DSS |
DP1, DP2 |
|||
|
S11.252 |
The
following good site practices shall be adopted for the proposed barging
points: Ÿ all
vessels shall be sized so that adequate clearance is maintained between
vessels and the seabed in all tide conditions, to ensure that undue turbidity
is not generated by turbulence from vessel movement or propeller wash Ÿ all
hopper barges shall be fitted with tight fitting seals to their bottom
openings to prevent leakage of material Ÿ construction
activities shall not cause foam, oil, grease, scum, litter or other
objectionable matter to be present on the water within the site Ÿ loading of
barges and hoppers shall be controlled to prevent splashing of material into
the surrounding water. Barges or
hoppers shall not be filled to a level that will cause the overflow of
materials or polluted water during loading or transportation |
To
minimize water quality impacts generated from the barging points. |
Contractor |
Barging points |
Construction
Phase |
EIAO-TM, WPCO |
N/A |
|||
|
S11.253 |
There is
a need to apply to EPD for a discharge licence for
discharge of effluent from the construction site under the WPCO. The discharge quality must meet the
requirements specified in the discharge licence. All the runoff and wastewater generated
from the works areas shall be treated so that it satisfies all the standards
listed in the TM-DSS. Minimum
distances of 100 m shall be maintained between the discharge points of
construction site effluent and the existing seawater intakes. The beneficial uses of the treated effluent
for other on-site activities such as dust suppression, wheel washing and
general cleaning etc., can minimise water
consumption and reduce the effluent discharge volume. If monitoring of the treated effluent
quality from the works areas is required during the construction phase of the
Project, the monitoring shall be carried out in accordance with the WPCO
license which is under the ambit of Regional Office (RO) of EPD. |
To
minimize water quality impact from effluent discharges from construction
sites |
Contractor |
All construction works areas |
Construction
Phase |
EIAO-TM, WPCO, TM-DSS |
DP1, DP2, DP3, DP4 |
|||
|
S11.254 |
To
minimize water quality impact from accidental spillage of chemical |
Contractor |
All construction works areas |
Construction
Phase |
EIAO-TM, WPCO, TM-DSS, WDO |
DP1, DP2, DP3, DP4 |
||||
|
S11.255 |
Any
service shop and maintenance facilities shall be located on hard standings
within a bunded area, and sumps and oil
interceptors shall be provided.
Maintenance of vehicles and equipment involving activities with
potential for leakage and spillage shall only be undertaken within the areas
appropriately equipped to control these discharges. |
To
minimize water quality impact from accidental spillage of chemical |
Contractor |
All construction works areas |
Construction
Phase |
EIAO-TM, WPCO, TM-DSS, WDO |
DP1, DP2, DP3, DP4 |
|||
|
S11.256 |
Disposal
of chemical wastes shall be carried out in compliance with the Waste Disposal
Ordinance. The “Code of Practice on the
Packaging, Labelling and Storage of Chemical Wastes” published under the
Waste Disposal Ordinance details the requirements to deal with chemical
wastes. General requirements are given
as follows: Ÿ Suitable
containers shall be used to hold the chemical wastes to avoid leakage or
spillage during storage, handling and transport. Ÿ Chemical
waste containers shall be suitably labelled, to notify and warn the personnel
who are handling the wastes, to avoid accidents. Ÿ Storage
area shall be selected at a safe location on site and adequate space shall be
allocated to the storage area. |
To
minimize water quality impact from accidental spillage of chemical |
Contractor |
All construction works areas |
Construction
Phase |
EIAO-TM, WPCO, TM-DSS, WDO |
DP1, DP2, DP3, DP4 |
|||
|
Operation Phase |
|
|
|
|
|
|
||||
|
S11.257 |
Ÿ Track drainage channels discharge shall pass through oil/grit
interceptors/chambers to remove oil, grease and sediment before discharging
into public storm drainage / foul sewerage systems. Ÿ The silt
traps and oil interceptors shall be cleaned and maintained regularly. Ÿ Oily
contents of the oil interceptors shall be transferred to an appropriate
disposal facility, or to be collected for reuse, if possible. |
To mitigate water
quality impact from tunnel run-off from track |
MTR |
All railway tunnels |
Operational
Phase |
EIAO-TM, WPCO,
TM-DSS, WDO |
DP2 |
|||
|
S11.258
|
Ÿ Connection
of domestic sewage generated from the Project shall be diverted to the foul
sewer. All the
discharge should comply with the requirements stipulated in the TM-DSS. Ÿ For
handling, treatment and disposal of other operational stage effluent, the
practices outlined in ProPECC PN 5/93 shall be
adopted where applicable. |
To avoid water
quality impact from sewage discharges |
MTR |
All railway stations and ventilation building |
Operational
Phase |
EIAO-TM, WPCO, TM-DSS, ProPECC PN 5/93 |
DP1 |
|||
|
Waste Management Implications |
|
|||||||||
|
Construction Phase |
|
|
|
|
|
|
||||
|
S12.75 |
Good Site Practices and
Waste Reduction Measures - Prepare
a Waste Management Plan (WMP) approved by the Engineer/Supervising Officer of
the Project based on current practices on construction sites; - Training
of site personnel in, site cleanliness, proper waste management and chemical
handling procedures; - Provision
of sufficient waste disposal points and regular collection of waste; - Appropriate
measures to minimize windblown litter and dust during transportation of waste
by either covering trucks or by transporting wastes in enclosed containers; - Regular
cleaning and maintenance programme for drainage
systems, sumps and oil interceptors; and - Separation
of chemical wastes for special handling and appropriate treatment. |
To reduce waste management impacts |
Contractor |
All Work Sites |
Construction
Phase |
Waste Disposal Ordinance (Cap. 354) Land (Miscellaneous Provisions) Ordinance (Cap. 28) DEVB TCW No. 6/2010 |
DP1, DP2, DP3, DP4 |
|||
|
S12.76 |
Good Site Practices and
Waste Reduction Measures (con’t) - Sorting
of demolition debris and excavated materials from demolition works to recover
reusable/ recyclable portions (i.e. soil, broken concrete, metal etc.); - Segregation
and storage of different types of waste in different containers, skips or
stockpiles to enhance reuse or recycling of materials and their proper
disposal; - Encourage
collection of aluminum cans by providing separate labeled bins to enable this
waste to be segregated from other general refuse generated by the workforce; - Proper
storage and site practices to minimize the potential for damage or
contamination of construction materials; - Plan
and stock construction materials carefully to minimize amount of waste
generated and avoid unnecessary generation of waste; and - Training
shall be provided to workers about the concepts of site cleanliness and
appropriate waste management procedures, including waste reduction, reuse and
recycle. |
To achieve waste reduction |
Contractor |
All Work Sites |
Construction
Phase |
Waste Disposal Ordinance (Cap. 354) Land (Miscellaneous Provisions) Ordinance (Cap. 28) |
DP1, DP2, DP3, DP4 |
|||
|
S12.77 |
Good Site Practices and Waste Reduction
Measures (con’t) - The
Contractor shall prepare and implement a WMP as part of the EMP in accordance
with ETWB TCW No. 19/2005 which describes the arrangements for avoidance,
reuse, recovery, recycling, storage, collection, treatment and disposal of
different categories of waste to be generated from the construction
activities. Such a management plan
shall incorporate site specific factors, such as the designation of areas for
segregation and temporary storage of reusable and recyclable materials. The EMP shall be submitted to the Engineer
for approval. The Contractor shall
implement the waste management practices in the EMP throughout the
construction stage of the Project. The
EMP shall be reviewed regularly and updated by the Contractor, preferably in
a monthly basis. |
To achieve waste reduction |
Contractor |
All Work Sites |
Construction
Phase |
ETWB TCW No. 19/2005 |
DP1, DP2, DP3, DP4 |
|||
|
S12.78 |
C&D
materials would be reused in other local concurrent projects as far as
possible. If all reuse outlets are exhausted during the construction phase,
the C&D materials would be disposed of at |
To achieve waste reduction |
Contractor |
All Work Sites |
Construction
Phase |
ETWB TCW No. 19/2005 |
DP1, DP2, DP3 |
|||
|
S12.79 |
Storage, Collection and
Transportation of Waste Should any temporary storage or stockpiling of waste is
required, recommendations to minimize the impacts include: - Waste,
such as soil, shall be handled and stored well to ensure secure containment,
thus minimizing the potential of pollution; - Maintain
and clean storage areas routinely; - Stockpiling
area shall be provided with covers and water spraying system to prevent materials
from wind-blown or being washed away; and - Different
locations shall be designated to stockpile each material to enhance reuse. |
To minimize potential adverse environmental impacts
arising from waste storage |
Contractor |
Work Sites |
Construction
Phase |
- |
DP1, DP2, DP3, DP4 |
|||
|
S12.80 |
Storage, Collection and
Transportation of Waste (con’t) Waste haulier with
appropriate permits shall be employed by the Contractor for the collection
and transportation of waste from works areas to respective disposal outlets.
The following suggestions shall be enforced to minimize the potential adverse
impacts: - Remove
waste in timely manner - Waste
collectors shall only collect wastes prescribed by their permits - Impacts
during transportation, such as dust and odour,
shall be mitigated by the use of covered trucks or in enclosed containers - Obtain
relevant waste disposal permits from the appropriate authorities, in
accordance with the Waste Disposal Ordinance (Cap. 354), Waste Disposal
(Charges for Disposal of Construction Waste) Regulation (Cap. 345) and the
Land (Miscellaneous Provisions) Ordinance (Cap. 28) - Waste
shall be disposed of at licensed waste disposal facilities - Maintain
records of quantities of waste generated, recycled and disposed |
To minimize potential adverse environmental impacts
arising from waste collection and disposal |
Contractor
|
Work Sites |
Construction
Phase |
- |
DP1, DP2, DP3, DP4 |
|||
|
S12.81 |
Storage, Collection and
Transportation of Waste (con’t) - Implementation
of trip ticket system with reference to DevB TC(W) No.6/2010 to monitor disposal of waste and to
control fly-tipping at PFRFs or landfills.
A recording system for the amount of waste generated, recycled and
disposed (including disposal sites) shall be proposed. |
To minimize potential adverse environmental impacts
arising from waste collection and disposal |
Contractor |
Work Sites |
Construction
Phase |
DEVB TCW No. 6/2010 |
DP1, DP2, DP3, DP4 |
|||
|
S12.83
– 12.86 |
Sorting of C&D
Materials - Sorting
to be performed to recover the inert materials, reusable and recyclable
materials before disposal off-site. - Specific
areas shall be provided by the Contractors for sorting and to provide
temporary storage areas for the sorted materials. - The
C&D materials shall at least be segregated into inert and non-inert
materials, in which the inert portion could be reused and recycled as far as
practicable before delivery to PFRFs as mentioned for beneficial use in other
projects. While opportunities for
reusing the non-inert portion shall be investigated before disposal of at
designated landfills. - Possibility
of reusing the spoil in the Project will be continuously investigated in the
detailed design and construction stages, it includes backfilling to cut and
cover construction works for the Hung Hom south and
north approach tunnels. |
To minimize potential adverse environmental impacts
during the handling, transportation and disposal of C&D materials |
Contractor |
Work Sites |
Construction
Phase |
DEVB TCW No. 6/2010ETWB
TCW No. 33/2002 ETWB TCW No. 19/2005 |
DP1, DP2, DP3 |
|||
|
S12.88 |
Sediments - The
basic requirements and procedures for excavated / dredged sediment disposal
specified under ETWB TC(W) No. 34/2002 shall be
followed. MFC is managing the disposal facilities in Hong Kong for the
dredged and excavated sediment, while EPD is the authority of issuing marine
dumping permit under the Dumping at Sea Ordinance. |
To ensure the sediment to be disposed of in an
authorized and least impacted way |
Contractor |
All works areas with sediments concern |
Construction
Phase |
ETWB TC(W) No. 34/2002 & Dumping at
Sea Ordinance |
DP1, DP2, DP3, DP4 |
|||
|
S12.89 |
Sediments (con’t) - The
contractor for the excavation / dredging works shall apply for the site
allocations of marine sediment disposal based on the prior agreement with
MFC/CEDD. A request for reservation of sediment disposal space have been
submitted to MFC for onward discussions of disposal approach and feasible
disposal sites and the letter is attached in Appendix 12.6. The
Project proponent shall also be responsible for the application of all
necessary permits from relevant authorities, including the dumping permit as
required under DASO from EPD, for the disposal of dredged and excavated
sediment prior to the commencement of the excavation works. |
To determine the best handling and disposal option of
the sediments |
MTR
/ Contractor |
All works areas with sediments concern |
Detailed
Design Stage and Construction Phase |
ETWB TC(W) No. 34/2002 & Dumping at
Sea Ordinance |
DP1, DP2, DP3, DP4 |
|||
|
S12.91
– 12.94 |
Sediments (con’t) - Stockpiling
of contaminated sediments shall be avoided as far as possible. If temporary
stockpiling of contaminated sediments is necessary, the excavated sediment
shall be covered by tarpaulin and the area shall be placed within earth bunds
or sand bags to prevent leachate from entering the
ground, nearby drains and/or surrounding water bodies. The stockpiling areas shall be completely
paved or covered by linings in order to avoid contamination to underlying
soil or groundwater. Separate and
clearly defined areas shall be provided for stockpiling of contaminated and
uncontaminated materials. Leachate, if any, shall be collected and discharged
according to the Water Pollution Control Ordinance (WPCO). - In
order to minimise the potential odour
/ dust emissions during excavation and transportation of the sediment, the
excavated sediments shall be wetted during excavation / material handling and
shall be properly covered when placed on trucks or barges. Loading of the excavated sediment to the
barge shall be controlled to avoid splashing and overflowing of the sediment
slurry to the surrounding water. - The
barge transporting the sediments to the designated disposal sites shall be
equipped with tight fitting seals to prevent leakage and shall not be filled
to a level that would cause overflow of materials or laden water during
loading or transportation. In
addition, monitoring of the barge loading shall be conducted to ensure that
loss of material does not take place during transportation. Transport barges
or vessels shall be equipped with automatic self-monitoring devices as
specified by the DEP. - In
order to minimise the exposure to contaminated
materials, workers shall, when necessary, wear
appropriate personal protective equipments (PPE) when handling contaminated
sediments. Adequate washing and
cleaning facilities shall also be provided on site. |
To ensure handling
of sediments are in accordance to statutory requirements |
Contractor |
Work Sites, Sediment disposal sites |
Construction
Phase |
ETWB TC(W) No.
34/2002 & Dumping at Sea Ordinance |
DP1, DP2, DP3, DP4 |
|||
|
S12.95 |
Sediments (con’t) - A
possible arrangement for Type 3 disposal is by geosynthetic
containment. A geosynthetic containment method is a
method whereby the sediments are sealed in geosynthetic
containers and, at the disposal site, the containers would be dropped into
the designated contaminated mud pit where they would be covered by further
mud disposal and later by the mud pit capping, thereby meeting the
requirements for fully confined mud disposal. The technology is readily
available for the manufacture of the geosynthetic
containers to the project-specific requirements. Similar disposal methods
have been used for projects in Europe, the |
To ensure handling
of sediments are in accordance to statutory requirements |
Contractor |
Work Sites, Sediment disposal sites |
Construction
Phase |
ETWB TC(W) No. 34/2002 & Dumping at
Sea Ordinance |
DP1, DP2, DP3, DP4 |
|||
|
S12.97 |
Containers for Storage of Chemical
Waste The Contractor shall register with EPD as a chemical
waste producer and to follow the guidelines stated in the Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes. Containers
used for storage of chemical waste shall: - Be
compatible with the chemical wastes being stored, maintained in good
condition and securely sealed; - Have
a capacity of less than 450 litters unless the specifications have been
approved by EPD; and - Display
a label in English and Chinese in accordance with instructions prescribed in
Schedule 2 of the Waste Disposal (Chemical Waste) (General) Regulation. |
To register with EPD as a Chemical waste producer and
store chemical waste in appropriate
containers |
Contractor |
Work Sites |
Construction
Phase |
Code of Practice on the Packaging, Labelling
and Storage of Chemical Wastes |
DP1, DP2, DP3, DP4 |
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S12.98 |
Chemical Waste Storage
Area - Be
clearly labeled to indicate corresponding chemical characteristics of the
chemical waste and used for storage of chemical waste only; - 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 from entering; and - Be
properly arranged so that incompatible materials are adequately separated. |
To prepare appropriate
storage areas for chemical waste at works areas |
Contractor |
Work Sites |
Construction
Phase |
Code of Practice on the Packaging, Labelling
and Storage of Chemical Wastes |
DP1, DP2, DP3, DP4 |
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S12.99 |
Chemical Waste - Lubricants,
waste oils and other chemical wastes would be generated during the maintenance
of vehicles and mechanical equipments.
Used lubricants shall be collected and stored in individual containers
which are fully labelled in English and Chinese and
stored in a designated secure place. |
To clearly label the chemical waste at works areas |
Contractor |
Work Sites |
Construction
Phase |
Code of Practice on the Packaging, Labelling
and Storage of Chemical Wastes |
DP1, DP2, DP3, DP4 |
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S12.100 |
Collection and Disposal of
Chemical Waste A trip-ticket system shall be operated in accordance
with the Waste Disposal (Chemical
Waste) (General) Regulation to monitor all movements of chemical
waste. The Contractor shall employ a
licensed collector to transport and dispose of the chemical wastes, to either
the approved CWTC at Tsing Yi, or another licensed
facility, in accordance with the Waste
Disposal (Chemical Waste) (General) Regulation. |
To monitor the generation, reuse and disposal of
chemical waste |
Contractor |
Work Sites |
Construction
Phase |
Waste Disposal (Chemical Waste) (General) Regulation |
DP1, DP2, DP3, DP4 |
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S12.101 |
General Refuse General refuse shall be stored in enclosed bins or
compaction units separate from C&D materials and chemical waste. A reputable waste collector shall be
employed by the contractor to remove general refuse from the site, separately
from C&D materials and chemical wastes.
Preferably, an enclosed and covered area shall be provided to reduce
the occurrence of wind-blown light material. |
To properly store and separate from other C&D
materials for subsequent collection and disposal |
Contractor |
Work Sites |
Construction
Phase |
- |
DP1, DP2, DP3, DP4 |
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S12.102 |
General Refuse (con’t) The recyclable component of general refuse, such as
aluminum cans, paper and cleansed plastic containers shall be separated from
other waste. Provision and collection
of recycling bins for different types of recyclable waste shall be set up by
the Contractor. The Contractor shall
also be responsible for arranging recycling companies to collect these
materials. |
To facilitate recycling of recyclable portions of
refuse |
Contractor |
Work Sites |
Construction
Phase |
- |
DP1, DP2, DP3, DP4 |
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S12.103 |
General Refuse (con’t) The Contractor shall carry out an education programme for workers in avoiding, reducing, reusing and
recycling of materials generation.
Posters and leaflets advising on the use of the bins shall also be
provided in the sites as reminders. |
To raise workers’ awareness on recycling issue |
Contractor |
Work Sites |
Construction
Phase |
- |
DP1, DP2, DP3, DP4 |
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Operation Phase |
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S12.106
– 12.107 |
Chemical Waste - The
requirements given in the Code of
Practice on the Packaging, Labelling and Storage of
Chemical Wastes would be followed in handling of chemical waste as in
construction phase. A trip-ticket
system would be adopted by the operator to monitor disposal of chemical
waste. - Non-recyclable
chemical waste shall be disposed of at appropriate facility like CWTC by
licensed collectors. Recyclable
chemical waste shall be collected and transported off-site by licensed
collectors. |
To avoid environmental impacts in handling, storage and
disposal of chemical waste |
MTR |
All facilities |
Operation
Phase |
Code of Practice on the Packaging, Labelling
and Storage of Chemical Wastes Waste Disposal (Chemical Waste) (General) Regulation |
DP1, DP2 |
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S12.108
– 12.109 |
General Refuse - Recycling
of waste paper, aluminum cans and plastic bottles shall be encouraged, it is
recommended to place clearly labelled recycling
bins at designated locations which could be accessed conveniently. Other general refuse shall be separated
from chemical and industrial waste by providing separated bins for storage to
maximize the recyclable volume. - A
reputable licensed waste collector shall be employed to remove general refuse
on a daily basis to minimize odour, pest and litter
impacts. |
To separate general refuse from other waste types and
proper disposal of the refuse |
MTR |
All facilities |
Operation
Phase |
Public Health and Municipal Services Ordinance (Cap. 132) |
DP1, DP2 |
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S12.110 |
Industrial Waste - Industrial
waste, generated mainly from the maintenance works, shall be separated from
other types of waste during disposal.
Moreover, steel shall be sorted out for their resalable value. A licensed collector shall be employed for
the collection of industrial waste. |
To recycle useful materials from industrial waste and
proper disposal |
MTR |
All facilities |
Operation
Phase |
- |
DP1, DP2 |
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Land Contamination Impact |
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S13.23–
13.24 |
For
construction works at
sites under the current stage of site investigation (Stage 1 SI): Ÿ Precautionary
measures such as visual inspection are recommended to be undertaken during
construction activities that disturb soil.
The inspection process shall involve a visual observation of excavated
soils for discolouration and the presence of oils, together with identifying
the presence of odours, which may also indicate soil and/or groundwater
contamination. Ÿ If soil
materials suspected to be contaminated are encountered during excavation,
sampling and testing shall be undertaken to verify the presence of
contamination. The soil extracted
during demolition, excavation and cut & cover construction shall be
temporary stockpiled. Shall
concentrations of contaminants of concern (COCs) exceed relevant RBRGs as
indicated by laboratory analyses, remediation works shall be undertaken with
reference to the Contamination Assessment Report (CAR) and Remediation Action
Plans (RAP). |
To
act as a general precautionary measure to screen soils for the presence
contamination during excavation works for Cut-and-Cover. |
Contractor |
Within Project
Boundary where signs of contamination is identified |
During excavation works for Cut-and-Cover |
Guidance Note for Contaminated Land Assessment and Remediation Guidance Manual for Use of Risk-based Remediation Goals for
Contaminated Land Management |
DP1, DP2 |
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S13.30 |
For some sites with currently
no SI proposed (i.e. sites ID 2-02, 2-18, 2-22, 2-23, 2-27, 2-28), to be
conservative, visual inspection shall be conducted during demolition and
excavation to detect any abnormal colour, smell or other characteristics of the soil, due
to the nearby land use and/ or construction method. If abnormal colour,
smell or other characteristics of contamination are identified for any of
these sites, sampling and testing shall be undertaken to verify the presence
of contamination. The soil extracted
during demolition, excavation and cut & cover construction shall be
temporary stockpiled. Should the
concentrations of contaminants of concern (COCs) exceed relevant RBRGs as
indicated by laboratory analyses, remediation works shall be undertaken with
reference to the CAR and RAP. |
To
act as a general precautionary measure to screen soils for the presence
contamination during excavation works for Cut-and-Cover. |
Contractor |
Areas with no SI
proposed (Sites ID 2-02, 2-18, 2-22, 2-23, 2-27, 2-28) |
During excavation
works for Cut-and-Cover |
Guidance Note for Contaminated Land Assessment and Remediation Guidance Manual for Use of Risk-based Remediation Goals for
Contaminated Land Management |
DP1, DP2 |
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S13.36
– 13.38 |
For areas inaccessible for
proper site appraisal and investigation (Stage 2 SI) (i) Site 2-15 Ÿ Upon
site access being granted, visual
inspection shall be carried out where intrusive works and soil excavation is
encountered, for attention on any potential contamination due to its current
operation Ÿ A
supplementary CAP shall then be submitted to EPD for endorsement. Ÿ A CAR/RAP shall be prepared and submitted to
EPD for endorsement on completion of the SI and analytical testing. Ÿ Shall
remediation be undertaken a Remediation Report (RR) shall be prepared and
submitted to EPD for endorsement to demonstrate that the decontamination work is
adequate and is carried out in accordance with the endorsed CAR and RAP. Information
such as soil treatment/ disposal records (including trip tickets),
confirmatory sampling results, and photographs shall be included in the
aforesaid RR. Ÿ No construction
work shall be carried out prior to the endorsement of the RR by EPD. |
(i) To
identify areas with land contamination concern, report laboratory results and
propose remediation measures if necessary. (ii) To
ensure remediation works have been undertaken to before the commencement of
any construction works of the Project. |
Contractor |
Areas unable to be
accessed during Stage 1 SI (Site 2-15) |
After
land resumption and prior to the construction works commencement at the site |
Guidance Note for Contaminated Land Assessment and Remediation Guidance Manual for Use of Risk-based Remediation Goals for
Contaminated Land Management |
DP1, DP2 |
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S13.39 |
Potential
Remediation of Contaminated Soil Ÿ Excavation
profiles must be properly designed and executed with attention to the
relevant requirements for environment, health and safety; Ÿ Excavation
shall be carried out during dry season as far as possible to minimise
contaminated runoff from contaminated soils; Ÿ Supply
of suitable clean backfill material is needed after excavation; Ÿ If
remediation is required with chemical oxidation proposed as a contaminant
mass reduction technology, chemicals will be securely and separately stored
away from sources of ignition or oxidisable
items. Handling will be undertaken by
personnel with appropriate training and personal protective equipment (PPE). Ÿ Vehicles
containing any excavated materials shall be suitably covered to limit
potential dust emissions or contaminated wastewater run-off, and truck bodies
and tailgates shall be sealed to prevent any discharge during transport or
during wet conditions; Ÿ Speed
control for the trucks carrying contaminated materials shall be enforced; Ÿ Vehicle
wheel and body washing facilities at the site’s exit points shall be
established and used; and Ÿ Pollution
control measures for air emissions e.g. from biopile
blower, noise emissions e.g. from blower, and water discharges e.g. runoff
control shall be implemented and complied with relevant regulations and
guidelines. |
To remediate
contaminated soil |
Contractor |
Identified contaminated sites |
Site remediation |
Guidance Notes for Investigation and Remediation of Contaminated Sites
of Petrol Filling Stations, Boatyards and Car Repair /Dismantling Workshop |
DP1, DP2 |
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S13. 40 |
In
order to minimize the potential adverse effects on health and safety of
construction workers during the course of site remediation, the Occupation
Safety and Health Ordinance (OSHO) (Chapter 509) and its subsidiary
Regulations shall be followed by all site personnel working on the site at
all times. In addition, the following basic health and safety measures shall
be implemented as far as possible: Ÿ Set up a
list of safety measures for site workers; Ÿ Provide
written information and training on safety for site workers; Ÿ Keep a
log-book and plan showing the contaminated zones and clean zones; Ÿ Maintain
a hygienic working environment; Ÿ Avoid
dust generation; Ÿ Provide
face and respiratory protection gear to site workers; Ÿ Provide
personal protective clothing (e.g. chemical resistant jackboot, liquid tight
gloves) to site workers; and Ÿ Provide first
aid training and materials to site workers. |
To
minimise the potentially adverse effects on health
and safety of construction workers during the course of site remediation. |
Contractor |
Identified
contaminated sites |
Site remediation
and prior to construction phase |
Guidance Note for Contaminated Land Assessment and Remediation Guidance Manual for Use of Risk-based Remediation Goals for
Contaminated Land Management |
DP1, DP2 |
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Hazard to Life |
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S14.31 |
Blasting
activities should be supervised and audited by competent site staff to ensure
strict compliance with the blasting permit conditions. The following general
recommendation should also be considered: ·
The security
plan should address different alert security level to reduce opportunity for
arson / deliberate initiation of explosives. The corresponding security
procedure should be implemented with respect to prevailing security alert
status announced by the Government. ·
Adverse weather
working guideline should be developed to clearly define procedure for marine
transport of explosives during thunderstorm, bad visibility (fog) etc. · In case a blast cannot proceed after the
Contractor’s explosives delivery vessel has already accepted delivery at the
TKO Area 137 Pier, contingency plans should be developed subject to prior
discussions with both Marine Department and Mines Division. |
To ensure safe marine transport of
explosives |
MTR / Contractor |
Works area/ pontoon and along explosives marine transport route |
Construction phase |
Dangerous Goods
Ordinance |
DP2 |
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S14.32 |
The
following measures should be considered for safe marine transport of
explosives: ·
Detonator
compartment shall be isolated from the rest of the explosives. ·
Location for
stopping and unloading from vessel to be provided beside the work pontoon
free from obstacles, hot work, etc. during time of unloading. ·
Develop
procedure to ensure that berthing space at the pontoon is available for the
explosives vessel. Confirmation of berthing space should be communicated to
vessel captain before delivery. If berthing space at the pontoon cannot be
secure, delivery should not commence. ·
During
preparation of the explosives at the works pontoon, hot work or other
activities should not be permitted in the vicinity of the explosives
offloading or preparation activities. ·
Ensure lining is
provided within the hold on the vessel and in good condition before
transportation. ·
Ensure that
packaging of detonators remains intact until handed over at blasting site. ·
Emergency plan
to include prevention of fire spreading and reducing likelihood of prolonged
fire leading to explosion. ·
Use only
experienced captains with good safety record. ·
Ensure that cartridged emulsion packages are damage free before every
trip. · During preparation of the explosives at the works
pontoon, special precautions may need to be taken around the pontoon area as
the marine traffic is only halted/evacuated once all
the blastholes have been charged and the blast is
ready to be fired. |
To ensure safe marine transport of
explosives |
MTR / Contractor |
Works area/ pontoon/ along explosives marine transport route |
Construction phase |
Dangerous Goods
Ordinance |
DP2 |
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S14.35 |
Ensure that
cartridged emulsion with high water content shall
be preferred. Also, the emulsion with perchlorate
formulation shall be avoided. |
To ensure safe explosives to be used. |
MTR / Contractor |
- |
Construction phase |
Dangerous Goods
Ordinance |
DP1,DP2 |
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S14.36 |
If
disposal is required for small quantities, disposal shall be made in a
controlled and safe manner by a Registered Shotfirer. |
To minimize the hazard to life issue in
relation to use of explosives |
MTR / Contractor |
Works area |
Construction phase |
Dangerous Goods
Ordinance |
DP1,DP2 |
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S14.37 |
Contingencies
shall be developed for disposal of large quantities of explosives subject to
prior discussions with Mines Division. |
To minimize the hazard to life issue in relation
to use of explosives |
MTR / Contractor |
- |
Construction phase |
Dangerous Goods
Ordinance |
DP1,DP2 |
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S14.39 |
Subsequent
to the consultation with HKCG and according to their requirements for works
within the vicinity of submarine gas pipelines the following safety measures
are recommended: · There should be a procedure to ensure that the
crew do not drop the anchor within the no-anchoring zone accidentally; · HKCG should be notified about the blasting
schedule in written format within a reasonable period of time prior to
blasting in order to ensure the gas safety during the construction period.
Also, agreed emergency response plan with HKCG should be established. · HKCG should be consulted, and method statement to
be forwarded to HKCG for comment, prior to the commencement of site works
(one week in advance); and · HKCG should be informed immediately of any
suspected damage, by way of their emergency control centre, telephone:
28806999, which is manned 24 hours. |
To minimize the hazard to life issue in
relation to fuel gas safety |
MTR / Contractor |
Within the vicinity of the submarine gas pipelines |
Construction phase |
Dangerous Goods
Ordinance |
DP2 |
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Remarks:
DP1: A railway and its
associated stations
DP2: A railway tunnel more
than 800m in length between portals
DP3: Reclamation works
(including associated dredging works) of more than 1 ha in size with a boundary
of which is less than 100m from a seawater intake point or resulting in 5%
decrease in cross sectional area calculated on the basis of 0.0mPD in a sea
channel
DP4: A dredging operation
at the cross harbour section exceeding 500,000 m3 or a dredging
operation which is less than 100m from a seawater intake point
N/A: Not applicable