Appendix C - Implementation Schedule of Environmental Mitigation Measures
EIA Ref. |
EM&A Log Ref |
Environmental
Mitigation Measures |
Location |
Implementation
Status |
Air Quality |
||||
S5.5.6.1 of HKBCFEIA |
A1 |
The contractor shall follow the procedures and
requirements given in the Air Pollution Control (Construction Dust)
Regulation |
All construction sites |
V |
S5.5.6.2 of
HKBCFEIA and S4.8.1 of TKCLKLEIA |
A2 |
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. ·
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; ·
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; ·
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; ·
All
unpaved roads/exposed area shall be watered which results in dust suppression
by forming moist cohesive films among the discrete grains of road surface
material. ·
No burning
of debris or other materials on the works areas is allowed; ·
Water
spray shall be used during the handling of fill material at the site and at
active cuts, excavation and fill sites where dust is likely to be created; ·
Open
dropping heights for excavated materials shall be controlled to a maximum
height of 2m to minimise the fugitive dust arising from unloading; ·
During
transportation by truck, materials shall not be loaded to a level higher than
the side and tail boards, and shall be dampened or covered before
transport. Materials having the
potential to create dust shall not be loaded to a level higher than the side
and tail boards, and shall be covered by a clean tarpaulin. The tarpaulin shall be properly secured and
shall extend at least 300mm over the edges of the side and tail boards; ·
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. |
All construction sites |
V |
S5.5.6.3 of
HKBCFEIA and S4.8.1 of TKCLKLEIA |
A3 |
The Contractor should undertake proper watering
on all exposed spoil and associated work areas (with at least 8 times per
day) throughout the construction phase. |
All construction sites |
V |
S5.5.6.4 of
HKBCFEIA and S4.11 of TKCLKLEIA |
A4 |
Implement regular dust monitoring under EM&A
programme during the construction stage. |
Selected representative dust monitoring station |
V |
S5.5.7.1 of
HKBCFEIA |
A5 |
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. |
All construction sites |
N/A |
S5.5.2.7 of
HKBCFEIA |
A6 |
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. |
All construction sites |
N/A (Construction in process) |
Construction Noise (Air borne) |
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S6.4.10 of HKBCFEIA |
N1 |
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. |
All construction sites |
V |
S6.4.11 of HKBCFEIA |
N2 |
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. |
All construction sites |
V |
S6.4.12 of HKBCFEIA |
N3 |
Install movable noise barriers (typically
density @14kg/m2), acoustic mat or full enclosure close to noisy
plants including air compressor, generators, saw. |
For plant items listed in Appendix 6D of the EIA report at all construction sites |
N/A |
S6.4.13 of HKBCFEIA |
N4 |
Select “Quiet plants” which comply with the BS
5228 Part 1 or TM standards. |
For plant items listed in Appendix 6D of the EIA report at all construction sites |
V |
S6.4.14 of HKBCFEIA |
N5 |
Sequencing operation of construction plants
where practicable. |
All construction sites where practicable |
V |
S5.1 of TMCLKLEIA |
N6 |
Implement a noise monitoring under EM&A
programme. |
Selected representative noise monitoring station |
V |
Waste Management (Construction Waste) |
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S12.6 of TMCLKLEIA |
WM1 |
The
Contractor shall identify a coordinator for the management of waste. |
All construction sites |
V |
S12.6 of TMCLKLEIA |
WM2 |
The Contractor shall apply for and obtain the
appropriate licenses for the disposal of public fill, chemical waste and
effluent discharges. |
All construction sites |
V |
S12.6 of TMCLKLEIA |
WM3 |
EM&A of waste handling, storage, transportation,
disposal procedures and documentation through the site audit programme shall
be undertaken. |
All construction sites |
V |
S8.3.8 of HKBCFEIA
and S12.6 of TMCLKLEIA |
WM4 |
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; ·
Implement
an enhanced Waste Management Plan similar to ETWBTC (Works) 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; and ·
The
surplus surcharge should be transferred to a fill bank. |
All construction sites |
V |
S8.3.9- S8.3.11 of
HKBCFEIA and S12.6 of TMCLKLEIA |
WM5 |
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 and falsework 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. |
All construction sites |
V |
S8.2.12- S8.3.15 of
HKBCFEIA and S12.6 of TMCLKLEIA |
WM6 |
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. |
All construction sites |
V |
S8.3.16 of HKBCFEIA
and S12.6 of TMCLKLEIA |
WM7 |
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. |
All construction
sites |
V |
S8.3.17 of HKBCFEIA
and S12.6 of TMCLKLEIA |
WM8 |
General
Refuse ·
The site
and surroundings shall be kept tidy and litter free. 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, aluminum 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. ·
Sufficient dustbins
shall be provided for storage
of waste as required under the Public Cleansing and Prevention of Nuisances
By-laws. In addition, general refuse
shall be cleared daily and shall be disposed of to the nearest licensed
landfill or refuse transfer station. ·
All waste
containers shall be in a secure area on hardstanding. |
All construction
sites |
V |
Water Quality (Construction Phase) |
||||
|
W1 |
Mitigation during the marine
works to reduce impacts to within acceptable levels have been recommended and
will comprise a series of measures that restrict the method and sequencing of
backfilling, as well as protection measures. Details of the measures are
provided below: ·
Reclamation
filling for the Project shall not proceed until at least 200m of leading
seawall at the reclamation area formed above +2.2mPD, unless otherwise
agreement was obtained from EPD, except for the 300m gaps for marine access.
All underwater filling works shall be carried out behind seawalls to avoid
dispersion of suspended solids outside the Project limit; ·
Except for
the filling of the cellular structures, not more than 15% public fill shall
be used for reclamation filling below +2.5mPD during construction of the
seawall; ·
After the
seawall is completed except for the 300m marine access as indicated in the
EPs, not more than 30% public fill shall be used for reclamation filling
below +2.5mPD, unless otherwise agreement from EPD was obtained; ·
Upon
completion of 200m leading seawall, no more than a total of 60 filling barge
trips per day shall be made with a cumulative maximum daily filling rate of
60,000 m3 for HKBCF and TMCLKL southern landfall reclamation during the
filling operation; and ·
Upon
completion of the whole section of seawall except for the 300m marine access
as indicated in the EPs, no more than a total of 190 filling barge trips per
day shall be made with a cumulative
maximum daily filling rate of 190,000 m3 for the remaining filling operations
for HKBCF and TMCLKL southern landfall reclamation. ·
Floating
type perimeter silt curtains shall be around the HKBCF site before the
commencement of marine works. Staggered layers of silt curtain shall be
provided to prevent sediment loss at navigation accesses. The length of each
staggered layers shall be at least 200m; ·
Single
layer silt curtain to be applied around the North-east airport water intake; ·
The
silt-curtains should be maintained in good condition to ensure the sediment
plume generated from filling be confined effectively within the site
boundary; ·
The
filling works shall be scheduled to spread the works evenly over a working
day; ·
Cellular
structure shall be used for seawall construction; ·
A layer of
geotextile shall be placed on top of the seabed before any filling activities
take place inside the cellular structures to form the seawall; ·
The
conveyor belts shall be fitted with windboards and conveyor release points
shall be covered with curtain to prevent any spillage of filling materials
onto the surrounding waters; and ·
An
additional layer of silt curtain shall be installed near the active stone
column installation points. A layer of geotextile with stone blanket on top
shall be placed on the seabed prior to stone column installation works. |
During filling |
V |
S9.11.1.3 of
HKBCFEIA and S6.10 of TMCLKLEIA |
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
WPCO 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 WPCO or collected for offsite 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 storm water system.. |
All land-based construction sites |
V (Most are implemented properly during the
reporting period except item stated
in Section 6.1 which
is under follow-up status) |
S9.14 of HKBCFEIA and S6.10 of TMCLKLEIA |
W3 |
Implement a water quality monitoring programme |
At identified monitoring location |
V |
S6.10 of TMCLKLEIA |
W4 |
All construction works shall be subject to routine
audit to ensure implementation of all EIA recommendations and good working
practice. |
All construction
site areas |
V |
Ecology (Construction Phase) |
||||
S10.7 of HKBCFEIA
and S8.14 of TMCLKLEIA |
E1 |
·
Install
silt curtain during the construction ·
Limit
works fronts ·
Construct
seawall prior to reclamation filling where practicable ·
Good site
practices ·
Strict enforcement
of no marine dumping ·
Site
runoff control ·
Spill
response plan |
Seawall,
reclamation area |
V |
S10.7 of HKBCFEIA |
E2 |
·
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. |
Land-based works areas |
V |
S10.7 of HKBCFEIA
and S8.14 of TMCLKLEIA |
E3 |
· Good
site practices, including strictly following the permitted works hours, using
quieter machines where practicable, and avoiding excessive lightings during
night time. |
Land-based works areas |
V |
S10.7 of HKBCFEIA
and S8.14 of TMCLKLEIA |
E4 |
· Dolphin
Exclusion Zone · Dolphin
watching plan |
Marine works |
V |
S10.7 of HKBCFEIA
and S8.14 of TMCLKLEIA |
E5 |
· Decouple
compressors and other equipment on working vessels · Proposal
on design and implementation of acoustic decoupling measures applied during
reclamation works · Avoidance
of percussive piling |
Marine works |
V |
S10.7 of HKBCFEIA
and S8.14 of TMCLKLEIA |
E6 |
· Control
vessel speed · Skipper
training · Predefined
and regular routes for working vessels; avoid Brothers Islands |
Marine traffic |
V |
S10.10 of HKBCFEIA
and S8.14 of TMCLKLEIA |
E7 |
· Vessel
based dolphin monitoring |
Northeast and
Northwest Lantau |
V |
Fisheries |
||||
S11.7 of HKBCFEIA |
F1 |
· Reduce
re-suspension of sediments · Limit
works fronts · Good
site practices · Strict enforcement
of no marine dumping ·
Spill response plan |
Seawall,
reclamation area |
V |
S11.7 of HKBCFEIA |
F2 |
· Install
silt-grease trap in the drainage system collecting surface runoff |
Reclamation area |
V |
Landscape & Visual (Construction Phase) |
||||
S14.3.3. 3 of
HKBCFEIA and S10.9 of TMCLKLEIA |
LV1 |
Mitigate
Landscape Impacts G1/CM4 Grass-hydroseed or sheeting bare soil
surface and stock pile areas. 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 new coastline. |
All construction
site areas |
N/A |
S10.9 of TMCLKLEIA |
LV2 |
Mitigate
Landscape Impacts CM7 Ensure no
run-off into water body adjacent to the Project Area. |
All construction
site areas |
V |
S14.3.3. 3 of
HKBCFEIA |
LV4 |
Mitigate
Visual Impacts V1 Minimize time for construction
activities during construction period. |
All construction
site areas |
V |
S10.9 of TMCLKLEIA |
LV5 |
Mitigate
Visual Impacts CM6 Control night-time lighting and glare by
hooding all lights. |
All construction
site areas |
V |
EM&A |
||||
S15.2.2 of HKBCFEIA |
EM1 |
An Independent Environmental Checker needs to be
employed as per the EM&A Manual. |
All construction
site areas |
V |
S15.5 - S15.6 of
HKBCFEIA |
EM2 |
·
An
Environmental Team needs to be employed as per the EM&A Manual. ·
Prepare a
systematic Environmental Management Plan to ensure effective implementation
of the mitigation measures. ·
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. |
All construction
site areas |
V |
Legend: V =
implemented; x = not implemented; N/A = not applicable