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: ¡P
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; ¡P
Any dusty materials remaining
after a stockpile is removed should be wetted with water and cleared from the
surface of roads; ¡P
A stockpile of dusty material should
not be extend beyond the pedestrian barriers,
fencing or traffic cones. ¡P
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; ¡P
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; ¡P
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; ¡P
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; ¡P
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; ¡P
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; ¡P
Any skip hoist for material
transport should be totally enclosed by impervious sheeting; ¡P
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; ¡P
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; ¡P
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. ¡P
No burning of debris or other
materials on the works areas is allowed; ¡P
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; ¡P
Open dropping heights for
excavated materials shall be controlled to a maximum height of 2m to minimise
the fugitive dust arising from unloading; ¡P
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; ¡P
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 ¡P
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: ¡P
Loading, unloading, handling,
transfer or storage of any dusty materials should be carried out in totally
enclosed system; ¡P
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; ¡P
Vents for all silos and cement/
pulverised fuel ash (PFA) weighing scale should be fitted with fabric
filtering system; ¡P
The materials which may generate
airborne dusty emissions should be wetted by water spray system; ¡P
All receiving hoppers should be
enclosed on three sides up to 3m above unloading point; ¡P
All conveyor transfer points
should be totally enclosed; ¡P
All access and route roads within
the premises should be paved and wetted; and ¡P
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: ¡P
All road surface within the
barging facilities will be paved; ¡P
Dust enclosures will be provided
for the loading ramp; ¡P
Vehicles will be required to pass
through designated wheels wash facilities; and ¡P
Continuous water spray at the
loading points. |
All construction
sites |
N/A (Construction in
process) |
Construction Noise
(Air borne) |
||||
S6.4.10 of HKBCFEIA |
N1 |
Use of good site practices to limit noise emissions by considering the
following: ¡P
only well-maintained plant should
be operated on-site and plant should be serviced regularly during the
construction programme; ¡P
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; ¡P
plant known to emit noise strongly
in one direction, where possible, be orientated so that the noise is directed
away from nearby NSRs; ¡P
silencers or mufflers on
construction equipment should be properly fitted and maintained during the
construction works; ¡P
mobile plant should be sited as
far away from NSRs as possible and practicable; ¡P
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) |
||||
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: ¡P
Maintain temporary stockpiles and
reuse excavated fill material for backfilling and reinstatement; ¡P
Carry out on-site sorting; ¡P
Make provisions in the Contract
documents to allow and promote the use of recycled aggregates where
appropriate; ¡P
Adopt ¡¥Selective Demolition¡¦
technique to demolish the existing structures and facilities with a view to
recovering broken concrete effectively for recycling purpose, where possible; ¡P
Implement a trip-ticket system for
each works contract to ensure that the disposal of C&D materials are
properly documented and verified; ¡P
Implement an enhanced Waste
Management Plan similar to ETWBTC (Works) No. 19/2005 ¡V ¡§Environmental
Management on Construction Sites¡¨ to encourage on-site sorting of C&D
materials and to minimize their generation during the course of construction;
¡P
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 ¡P
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 ¡P
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. ¡P
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 ¡P
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. ¡P
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. ¡P
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. ¡P
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 ¡P
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 ¡P
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. ¡P
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. ¡P
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. ¡P
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. ¡P
Training should be provided to
workers about the concepts of site cleanliness and appropriate waste
management procedure, including reduction, reuse and recycling of wastes. ¡P
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. ¡P
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: ¡P
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; ¡P
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; ¡P
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; ¡P
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 ¡P
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. ¡P
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; ¡P
Single layer silt curtain to be
applied around the North-east airport water intake; ¡P
The silt-curtains should be
maintained in good condition to ensure the sediment plume generated from
filling be confined effectively within the site boundary; ¡P
The filling works shall be
scheduled to spread the works evenly over a working day; ¡P
Cellular structure shall be used
for seawall construction; ¡P
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; ¡P
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 ¡P
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: ¡P
wastewater from temporary site
facilities should be controlled to prevent direct discharge to surface or
marine waters; ¡P
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; ¡P
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; ¡P
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; ¡P
temporary access roads should be
surfaced with crushed stone or gravel; ¡P
rainwater pumped out from trenches
or foundation excavations should
be discharged into storm drains via silt removal facilities; ¡P
measures should be taken to
prevent the washout of construction materials, soil, silt or debris into any
drainage system; ¡P
open stockpiles of construction materials (e.g. aggregates and sand) on site should be
covered with tarpaulin or similar
fabric during rainstorms; ¡P
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; ¡P
discharges of surface run-off into
foul sewers must always be
prevented in order not to unduly overload the foul sewerage system; ¡P
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; ¡P
wheel wash overflow shall be
directed to silt removal facilities before being discharged to the storm
drain; ¡P
the section of construction road
between the wheel washing bay and the public road should be surfaced with
crushed stone or coarse gravel; ¡P
wastewater generated from
concreting, plastering, internal decoration, cleaning work and other similar
activities, shall be screened to remove large objects; ¡P
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; ¡P
the contractors shall prepare an
oil / chemical cleanup plan and ensure that
leakages or spillages are contained and cleaned up immediately; ¡P
waste oil should be collected and
stored for recycling or disposal, in accordance with the Waste Disposal
Ordinance; ¡P
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 ¡P
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 |
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 |
¡P
Install silt curtain during the
construction ¡P
Limit works fronts ¡P
Construct seawall prior to
reclamation filling where practicable ¡P
Good site practices ¡P
Strict enforcement of no marine
dumping ¡P
Site runoff control ¡P
Spill response plan |
Seawall,
reclamation area |
V |
S10.7 of HKBCFEIA |
E2 |
¡P 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 |
¡P 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 |
¡P Dolphin Exclusion
Zone ¡P Dolphin watching
plan |
Marine works |
V |
S10.7 of HKBCFEIA
and S8.14 of TMCLKLEIA |
E5 |
¡P Decouple
compressors and other equipment on working vessels ¡P Proposal on design
and implementation of acoustic decoupling measures applied during reclamation
works ¡P Avoidance of
percussive piling |
Marine works |
V |
S10.7 of HKBCFEIA
and S8.14 of TMCLKLEIA |
E6 |
¡P Control vessel
speed ¡P Skipper training ¡P Predefined and
regular routes for working vessels; avoid Brothers Islands |
Marine traffic |
V |
S10.10 of HKBCFEIA
and S8.14 of TMCLKLEIA |
E7 |
¡P Vessel based
dolphin monitoring |
Northeast and
Northwest Lantau |
V |
Fisheries |
||||
S11.7 of HKBCFEIA |
F1 |
¡P Reduce re-suspension
of sediments ¡P Limit works fronts ¡P Good site practices ¡P Strict enforcement
of no marine dumping ¡P Spill response plan |
Seawall,
reclamation area |
V |
S11.7 of HKBCFEIA |
F2 |
¡P 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 |
¡P
An Environmental Team needs to be
employed as per the EM&A Manual. ¡P
Prepare a systematic Environmental
Management Plan to ensure effective implementation of the mitigation
measures. ¡P
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