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Appendix A.
Implementation Schedule for Environmental
Mitigation Measures |
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EIA Ref. |
EM&A Ref. |
Recommended Mitigation Measures |
Objectives of the Recommended Measure & |
Who to implement the measure? |
Location of the measure |
When to implement the measure? |
What requirements or standards for the measure to achieve? |
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Air Quality Impact (Construction) |
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2.1 |
General
Dust Control Measures The following dust suppression measures should be implemented: ¡ Frequent water spraying for active construction areas
(4 times per day for active areas in Po Kak Tsai and 8 times per day for all
other active areas), including areas with heavy construction and slope cutting
activities ¡ 80% of stockpile areas should be covered by
impervious sheets ¡ Speed of trucks within the site should be controlled to about 10 km/hr ¡ All haul roads within the site should be paved to avoid dust emission due to vehicular movement |
To minimize adverse dust emission generated from various construction activities of the works sites |
Contractor |
Construction Works Sites |
During Construction |
EIA Recommendation and Air Pollution Control
(Construction Dust) Regulation |
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2.1 |
Best Practice for Dust Control The relevant best practices for dust
control as stipulated in the Air Pollution Control (Construction Dust)
Regulation should be adopted to further reduce the construction dust impacts of the Project. These best practices include: Good site management §
The Contractor should maintain high standard of housekeeping to prevent
emission of fugitive dust. §
Loading, unloading, handling and storage of raw materials, wastes or
by-products should be carried out in a manner so as to minimize the release
of visible dust emission. §
Any piles of materials accumulated on or around the work areas should
be cleaned up regularly. §
Cleaning, repair and maintenance of all plant facilities within the
work areas should be carried out in a manner minimizing generation of
fugitive dust emissions. §
The material
should be handled properly to prevent fugitive dust emission before cleaning. Disturbed Parts of the Roads §
Each and every main temporary access should be paved with concrete,
bituminous hardcore materials or metal plates and kept clear of dusty
materials; or ¡
Unpaved parts of
the road should be sprayed with water or a dust suppression chemical so as to
keep the entire road surface wet. Exposed Earth ¡ Exposed earth should be properly treated by
compaction, hydroseeding, vegetation planting or seating with latex, vinyl,
bitumen within six months after the last construction activity on the site or
part of the site where the exposed earth lies. Loading, Unloading or
Transfer of Dusty Materials ¡ All dusty materials should be sprayed with water
immediately prior to any loading or transfer operation so as to keep the
dusty material wet. Debris Handling ¡ Any debris should be covered entirely by impervious
sheeting or stored in a debris collection area sheltered on the top and the
three sides. ¡ Before debris is dumped into a chute, water should be
sprayed so that it remains wet when it is dumped. Transport of Dusty
Materials ¡ Vehicle used for transporting dusty materials/spoils
should be covered with tarpaulin or similar material. The cover should extend over the edges of
the sides and tailboards. Wheel washing
¡
Vehicle wheel
washing facilities should be provided at each construction site exit. Immediately before leaving the
construction site, every vehicle should be washed to remove any dusty
materials from its body and wheels. Use of
vehicles ¡
Immediately before
leaving the construction site, every vehicle should be washed to remove any
dusty materials from its body and wheels. ¡
Where a vehicle
leaving the construction site is carrying a load of dusty materials, the load
should be covered entirely by clean impervious sheeting to ensure that the
dusty materials do not leak from the vehicle. Site
hoarding ¡
Where a site
boundary adjoins a road, street, service lane or other area accessible to the
public, hoarding of not less than 2.4m high from ground level should be
provided along the entire length of that portion of the site boundary except
for a site entrance or exit. Blasting ¡
The areas within
30m from the blasting area should be wetted with water prior to blasting. |
To minimize adverse dust emission generated from various construction activities of the works sites |
Contractor |
Construction Works Sites |
During Construction |
EIA Recommendation and Air Pollution Control
(Construction Dust) Regulation |
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Air Quality Impact (Operation) |
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3.5.2.2 |
2.2 |
The following odour containment
and control measures will be provided for the proposed sewage treatment work
at the BCP site: ¡ The treatment work will be totally enclosed. Negative
pressure ventilation will be provided within the enclosure to avoid any
fugitive odorous emission from the treatment work. ¡ Further odour containment will be achieved by
covering or confining the sewage channels, sewage tanks, and equipment with
potential odour emission. ¡ Proper mixing will be provided at the equalization
and sludge holding tanks to prevent sewage septicity. ¡
Chemical or
biological deodorisation facilities with a minimum odour removal efficiency
of 90% will be provided to treat potential odorous emissions from the
treatment plant including sewage channels / tanks, filter press and screening
facilities so as to minimize any potential odour impact to the nearby ASRs. |
To minimize potential odour impact from operation of the proposed sewage treatment work at BCP |
DSD |
BCP |
Operation Phase |
EIA recommendation |
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Noise Impact (Construction) |
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3.1 |
Adoption of Quieter PME Use of the recommended quieter |
To minimize the construction air-borne noise impact |
Contractors |
Construction Work Sites |
During Construction |
EIA recommendation, EIAO and Noise Control Ordinance (NCO) |
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4.4.1.4 |
3.1 |
Use of Movable Noise Barrier The
use of movable barrier for certain PME can further alleviate the construction
noise impacts. In general, a 5 dB(A) reduction for movable PME and 10 dB(A)
for stationary PME can be achieved depending on the actual design of the
movable noise barrier. The Contractor shall be responsible for design of the
movable noise barrier with due consideration given to the size of the PME and
the requirement for intercepting the line of sight between the NSRs and PME.
Barrier material with surface mass in excess of 7 kg/m2 is
recommended to achieve the predicted screening effect. |
To minimize the construction air-borne noise impact |
Contractors |
Construction Work Sites |
During Construction |
EIA recommendation, EIAO and NCO |
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4.4.1.4 |
3.1 |
Use of Noise Enclosure/ Acoustic Shed The
use of noise enclosure or acoustic shed is to cover stationary PME such as
air compressor and concrete pump. With
the adoption of the noise enclosure, the PME could be completely screened,
and noise reduction of 15 dB(A) can be achieved according to the GW-TM. |
To minimize the construction air-borne noise impact |
Contractors |
Construction Work Sites |
During Construction |
EIA recommendation, EIAO and NCO |
|
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4.4.1.4 |
3.1 |
Use of Noise Insulating Fabric Noise
insulating fabric can be adopted for certain PME (e.g. drill rig, pilling
auger etc). The insulating fabric should be lapped
such that there are no openings or gaps on the joints. Technical data from
manufacturers state that by using the Fabric, a noise reduction of over 10
dB(A) can be achieved on noise level. |
To minimize the construction air-borne noise impact |
Contractors |
Construction Work Sites |
During Construction |
EIA recommendation, EIAO and NCO |
|
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4.4.1.4 |
3.1 |
Good Site Practice The good site practices listed below should be followed during each phase of construction: ·
Only well-maintained plant should be operated
on-site and plant should be serviced regularly during the construction programme; ·
Silencers or mufflers on construction
equipment should be utilized and should be properly maintained during the
construction programme; ·
Mobile plant, if any, should be sited as far
from NSRs as possible; ·
Machines and plant (such as trucks) 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 should, wherever possible, be orientated so that the noise is
directed away from the nearby NSRs; and ·
Material stockpiles and other structures
should be effectively utilized, wherever practicable, in screening noise from
on-site construction activities. |
To minimize the construction air-borne noise impact |
Contractors |
Construction Work Sites |
During Construction |
EIA recommendation, EIAO and NCO |
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Noise Impact (Operation) |
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Road
Traffic Noise |
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3.2 |
Erection
of noise barrier/ enclosure along the viaduct section. |
To minimize the road traffic noise along the connecting road of BCP |
Contractor |
Loi Tung and |
Before Operation |
EIAO and NCO |
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Fixed Plant Noise |
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3.2 |
Specification of the maximum allowable sound power
levels of the proposed fixed
plants during daytime and
night-time. |
To minimize the fixed plant noise impact |
Managing Authority of the buildings / Contractor |
BCP, |
Before Operation |
EIA recommendation, EIAO and NCO |
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3.2 |
The following noise reduction measures shall be considered as far as practicable during operation: · Choose quieter plant such as those which have been effectively silenced; · Include noise levels specification when ordering new plant (including chillier and E/M equipment); · Locate fixed plant/louver away from any NSRs as far as practicable; · Locate fixed plant in walled plant rooms or in specially designed enclosures; · Locate noisy machines in a basement or a completely separate building; · Install direct noise mitigation measures including silencers, acoustic louvers and acoustic enclosure where necessary; and · Develop and implement a regularly scheduled plant maintenance programme so that equipment is properly operated and serviced in order to maintain a controlled level of noise. |
To minimize the fixed plant noise impact |
Managing Authority of the buildings / Contractor |
BCP, |
Before Operation |
EIAO and NCO |
|
Water Quality Impact (Construction) |
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5.6.1.1 |
4.1 |
Construction
site runoff and drainage The site practices outlined in ProPECC Note PN 1/94 should be followed as far as practicable in order to minimise surface runoff and the chance of erosion. The following measures are recommended to protect water quality and when properly implemented should be sufficient to adequately control site discharges so as to avoid water quality impacts: §
At the start of
site establishment, perimeter cut-off drains to direct off-site water around
the site should be constructed with internal drainage works and erosion and
sedimentation control facilities implemented. Channels (both temporary and
permanent drainage pipes and culverts), earth bunds or sand bag barriers
should be provided on site to direct stormwater to silt removal facilities.
The design of the temporary on-site drainage system should be undertaken by
the Contractor prior to the commencement of construction. §
The dikes or
embankments for flood protection should be implemented around the boundaries
of earthwork areas. Temporary ditches should be provided to facilitate the
runoff discharge into stormwater drainage system through a sediment/silt
trap. The sediment/silt traps should be incorporated in the permanent
drainage channels to enhance deposition rates, if practical. §
Sand/silt
removal facilities such as sand/silt traps and sediment basins should be
provided to remove sand/silt particles from runoff to meet the requirements
of the TM standards under the WPCO. The design of efficient silt removal
facilities should be based on the guidelines in Appendix A1 of ProPECC Note
PN 1/94. Sizes may vary depending upon
the flow rate. The detailed design of the sand/silt traps should be
undertaken by the Contractor prior to the commencement of construction. §
All drainage
facilities and erosion and sediment control structures should be regularly
inspected and maintained to ensure proper and efficient operation at all
times and particularly during rainstorms. Deposited silt and grit should be
regularly removed, at the onset of and after each rainstorm to ensure that
these facilities are functioning properly at all times. §
Measures should
be taken to minimize the ingress of site drainage into excavations. If
excavation of trenches in wet periods is necessary, they should be dug and
backfilled in short sections wherever practicable. Water pumped out from
foundation excavations should be discharged into storm drains via silt
removal facilities. §
If surface
excavation works cannot be avoided during the wet season (April to
September), temporarily exposed slope/soil surfaces should be covered by
tarpaulin or other means, as far as practicable, and temporary access roads
should be protected by crushed stone or gravel, as excavation proceeds.
Interception channels should be provided (e.g. along the crest/edge of the
excavation) to prevent storm runoff from washing across exposed soil
surfaces. Arrangements should always
be in place to ensure that adequate surface protection measures can be safely
carried out well before the arrival of a rainstorm. Other measures that need
to be implemented before, during and after rainstorms are summarized in
ProPECC Note PN 1/94. §
The overall
slope of the site should be kept to a minimum to reduce the erosive potential
of surface water flows. §
All vehicles and
plant should be cleaned before leaving a construction site to ensure no
earth, mud, debris and the like is deposited by them on roads. An adequately
designed and sited wheel washing facility should be provided at construction
site exit where practicable. Wash-water should have sand and silt settled out
and removed regularly to ensure the continued efficiency of the process. The
section of access road leading to, and exiting from, the wheel-wash bay to
the public road should be paved with sufficient backfall toward the
wheel-wash bay to prevent vehicle tracking of soil and silty water to public
roads and drains. §
Open stockpiles
of construction materials or construction wastes on-site should be covered
with tarpaulin or similar fabric during rainstorms. Measures should be taken
to prevent the washing away of construction materials, soil, silt or debris
into any drainage system. §
Manholes
(including newly constructed ones) should be adequately covered and
temporarily sealed so as to prevent silt, construction materials or debris
being washed into the drainage system and stormwater runoff being directed
into foul sewers. §
Precautions
should be taken at any time of the year when rainstorms are likely. Actions
should be taken when a rainstorm is imminent or forecasted and actions to be
taken during or after rainstorms are summarized in Appendix A2 of ProPECC
Note PN 1/94. Particular attention
should be paid to the control of silty surface runoff during storm events,
especially for areas located near steep slopes. § Bentonite slurries used in piling or slurry walling should be reconditioned and reused wherever practicable. Temporary enclosed storage locations should be provided on-site for any unused bentonite that needs to be transported away after all the related construction activities are completed. The requirements in ProPECC Note PN 1/94 should be adhered to in the handling and disposal of bentonite slurries. |
To control site runoff and drainage; prevent high sediment loading from reaching the nearby watercourses |
Contractor |
Construction Works Sites |
Construction Phase |
Practice Note for Professional Persons on Construction Site Drainage (ProPECC Note PN 1/94) |
|
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5.6.1.1 |
4.1 |
Good site practices for works within
water gathering grounds The following conditions should be complied, if there is any works to be carried out within the water gathering grounds: §
Adequate
measures should be implemented to ensure no pollution or siltation occurs to
the catchwaters and catchments. §
No earth,
building materials, oil or fuel, soil, toxic materials or any materials that
may possibly cause contamination to water gathering grounds are allowed to be
stockpiled on site. §
All surplus
spoil should be removed from water gathering grounds as soon as possible. §
Temporary drains
with silt traps should be constructed at the site boundary before the commencement
of any earthworks. §
Regular cleaning
of silt traps should be carried out to ensure proper operation at all time. §
All excavated or
filled surfaces which have the risk of erosion should always be protected
form erosion. §
Facilities for
washing the wheels of vehicles before leaving the site should be provided. §
Any construction
plant which causes pollution to catchwaters or catchments due to the leakage
of oil or fuel should be removed off site immediately. §
No maintenance
activities which may generate chemical wastes should be undertaken in the
water gathering grounds. Vehicle maintenance should be confined to designated
paved areas only and any spillages should be cleared up immediately using
absorbents and waste oils should be collected in designated tanks prior to
disposal off site. All storm water run-off from these areas should be
discharged via oil/petrol separators and sand/silt removal traps. §
Any soil
contaminated with fuel leaked from plant should be removed off site and the
voids arising from removal of contaminated soil should be replaced by
suitable material approved by the Director of Water Supplies. §
Provision of
temporary toilet facilities and use of chemicals or insecticide of any kind
are subject to the approval of the Director of Water Supplies. §
Drainage plans
should be submitted for approval by the Director of Water Supplies. §
An unimpeded
access through the waterworks access road should always be maintained. §
Earthworks near
catchwaters or streamcourses should only be carried out in dry season between
October and March, § Advance notice must be given before the commencement of works on site quoting WSD’s approval letter reference. |
To minimize water quality impacts to the water gathering grounds |
Contractor |
Construction Works Sites within the water gathering grounds |
Construction Phase |
ProPECC Note PN 1/94 |
|
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5.6.1.2 |
4.1 |
Good
site practices of general construction activities Construction solid waste, debris and refuse generated on-site should be collected, handled and disposed of properly to avoid entering any nearby stormwater drain. Stockpiles of cement and other construction materials should be kept covered when not being used. Oils and fuels should only be stored in designated areas which have pollution prevention facilities. To prevent spillage of fuels and solvents to any nearby stormwater drain, all fuel tanks and storage areas should be provided with locks and be sited on sealed areas, within bunds of a capacity equal to 110% of the storage capacity of the largest tank. The bund should be drained of rainwater after a rain event. |
To minimize water quality impacts |
Contractor |
All construction works sites |
Construction phase |
EIA Recommendation |
|
|
|
4.1 |
Sewage
effluent from construction workforce Temporary
sanitary facilities, such as portable chemical toilets, should be employed
on-site where necessary to handle sewage from the workforce. A licensed
contractor should be employed to provide appropriate and adequate portable
toilets and be responsible for appropriate disposal and maintenance. |
To minimize water quality impacts |
Contractor |
All construction works sites with on-site sanitary facilities |
Construction phase |
EIA Recommendation and Water Pollution Control Ordinance (WPCO) |
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5.6.1.4 |
4.1 |
Hydrogeological
Impact Grout
injection works would be conducted before blasting, for sealing a limited
area around the tunnel with a grout of a suitable strength for controlling
the potential groundwater inflows. The pre-injection grouting method would be
supplemented by post-injection grouting where necessary to further enhance
the groundwater inflow control. On-site treatment for the groundwater ingress
pumped out would be required to remove any contamination by grouting
materials before discharge off-site. |
To minimize water quality impacts |
Contractor |
Construction works sites of the drill and blast tunnel |
Construction phase |
EIA Recommendation and WPCO |
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Water Quality Impact (Operation) |
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No mitigation
measure is required. |
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Sewage and Sewerage Treatment Impact
(Construction) |
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6.7 |
5 |
The sewage generated by the on-site
workforce should be collected in chemical toilets and disposed of off-site by
a licensed waste collector. |
To minimize water quality impacts |
Contractor |
All construction works sites with on-site sanitary facilities |
Construction phase |
EIA recommendation and WPCO |
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Sewage and Sewerage Treatment Impact (Operation) |
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5 |
Sewage generated by the BCP and Chuk Yuen
Village Resite will be collected and treated by the proposed on-site sewage
treatment facility using Membrane Bioreactor treatment with a portion of the
treated wastewater reused for irrigation and flushing within the BCP. |
To minimize water quality impacts |
DSD |
BCP |
Operation phase |
EIA recommendation and WPCO |
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|
5 |
Sewage generated from the |
To minimize water quality impacts |
DSD |
|
Operation phase |
EIA recommendation and WPCO |
|
Waste Management Implication (Construction) |
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7.6.1.1 |
6 |
Good Site Practices Adverse impacts related to waste management such as potential hazard, air, odour, noise, wastewater discharge and public transport as mentioned in section 3.4.7.2 (ii)(c) of the Study Brief are not expected to arise, provided that good site practices are strictly followed. Recommendations for good site practices during the construction activities include: §
Nomination of an
approved person, such as a site manager, to be responsible for good site
practices, arrangements for collection and effective disposal to an
appropriate facility, of all wastes generated at the site §
Training of site
personnel in proper waste management and chemical handling procedures §
Provision of
sufficient waste disposal points and regular collection of waste §
Dust suppression
measures as required under the Air Pollution Control (Construction Dust)
Regulation should be followed as far as practicable. Appropriate measures to
minimise windblown litter and dust/odour during transportation of waste by
covering trucks or in enclosed containers §
General refuse
shall be removed away immediately for disposal. As such odour is not
anticipated to be an issue to distant sensitive receivers §
Provision of
wheel washing facilities before the trucks leaving the works area so as to
minimise dust introduction from public road §
Covers and water
spraying system should be provided for the stockpiled C&D material to
prevent dust impact or being washed away §
Designate
different locations for storage of C&D material to enhance reuse §
Well planned
programme for transportation of C&D material to lessen the off-site
traffic impact. Well planned delivery programme for offsite disposal and
imported filling material such that adverse noise impact from transporting of
C&D material is not anticipated §
Site practices
outlined in ProPECC PN 1/94 “Construction Site Drainage” should be
adopted as far as practicable, such as cleaning and maintenance of drainage
systems regularly § Provision of cover for the stockpile material, sand bag or earth bund as barrier to prevent material from washing away and entering the drains |
To minimize adverse environmental impact |
Contractor |
Construction works sites (general) |
Construction Phase |
EIA recommendation; Waste Disposal Ordinance; Waste Disposal (Chemical Wastes) (General) Regulation; and ETWB TC(W) No. 19/2005, Environmental Management on Construction Site |
|
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7.6.1.2 |
6 |
Waste Reduction Measures Good management and control can prevent the generation of a significant amount of waste. Waste reduction is best achieved at the planning and design stage, as well as by ensuring the implementation of good site practices. Recommendations to achieve waste reduction include: §
Segregation and
storage of different types of waste in different containers, skips or
stockpiles to enhance reuse or recycling of materials and their proper
disposal §
Encourage
collection of aluminium cans by providing separate labelled bins to enable
this waste to be segregated from other general refuse generated by the work
force §
Proper storage
and site practices to minimise the potential for damage or contamination of
construction materials §
Plan and stock
construction materials carefully to minimise amount of waste generated and
avoid unnecessary generation of waste § In addition to the above measures, specific mitigation measures are recommended below for the identified waste arising to minimise environmental impacts during handling, transportation and disposal of these wastes. |
To reduce the quantity of wastes |
Contractor |
Construction works sites (General) |
Construction Phase |
EIA recommendation and Waste Disposal Ordinance |
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7.6.1.3 |
6 |
C&D Materials In order to minimise impacts resulting from collection and transportation of C&D material for off-site disposal, the excavated materials should be reused on-site as backfilling material as far as practicable. The surplus rock and other inert C&D material would be disposed of at the Government’s Public Fill Reception Facilities (PFRFs) at Tuen Mun Area 38 for beneficial use by other projects in the HKSAR as the last resort. C&D waste generated from general site clearance and tree felling works would require disposal to the designated landfill site. Other mitigation requirements are listed below: §
A Waste
Management Plan should be prepared and implemented in accordance with ETWB
TC(W) No. 19/2005 Environmental Management on Construction Site; and §
In order to
monitor the disposal of C&D material and solid wastes at public filling
facilities and landfills, and to control fly-tipping, a trip-ticket system
(e.g. ETWB TCW No. 31/2004) should be included. |
To minimize impacts resulting from C&D material |
Contractor |
Construction Works Sites (General) |
Construction Phase |
EIA recommendation; Waste Disposal Ordinance; and ETWB TCW No. 31/2004 |
|
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7.6.1.4 |
6 |
General
refuse General refuse should be stored in
enclosed bins or compaction units separated from other C&D material. A reputable waste collector is to be
employed by the Contractor to remove general refuse from the site separately.
Preferably an enclosed and covered area should be provided to reduce the
occurrence of 'wind blown' litter. |
To minimize impacts resulting from collection and transportation of general refuse for off-site disposal |
Contractor |
Construction works sites (General) |
Construction phase |
Waste Disposal Ordinance and Public Health and Municipal Services Ordinance - Public Cleansing and Prevention of Nuisances Regulation |
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7.6.1.5 |
6 |
Chemical waste If
chemical wastes are produced at the construction site, the Contractor will be required to register with
the 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. Good quality containers compatible with the chemical wastes
should be used, and incompatible chemicals should be stored separately.
Appropriate labels should be securely attached on each chemical waste
container indicating the corresponding chemical characteristics of the
chemical waste, such as explosive, flammable, oxidizing, irritant, toxic,
harmful, corrosive, etc. The Contractor shall use a licensed collector to
transport and dispose of the chemical wastes, to the licensed Chemical Waste Treatment Centre, or other licensed facilities, in accordance with the Waste
Disposal (Chemical Waste) (General) Regulation |
To minimize impacts resulting from collection and transportation of chemical waste for off-site disposal |
Contractor |
Construction works sites (General) |
Construction phase |
Waste Disposal (Chemical Waste) (General) Regulation and Code of Practice on the
Packaging, Labelling and Storage of Chemical Wastes |
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Waste
Management (Operation Phase) |
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6 |
General
refuse General refuse should be collected on
daily basis and delivered to the refuse collection point accordingly. A
reputable waste collector should be employed to remove general refuse
regularly to avoid odour nuisance or pest and vermin problem. Recycling
containers are recommended to be provided to encourage recycling of aluminium
cans and waste paper. |
To minimize impacts resulting from collection and transportation of general refuse for off-site disposal |
Managing Authority of the BCP |
BCP and its associated facilities |
Operation phase |
Waste Disposal Ordinance and Public Health and Municipal Services Ordinance - Public Cleansing and Prevention of Nuisances Regulation |
|
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|
6 |
Chemical
waste §
Register with the EPD as a chemical waste producer should be made and guidelines stated in the Code of Practice on
the Packaging, Labelling and Storage of Chemical Wastes should be followed. §
Good quality
containers compatible with the chemical wastes should be used, and
incompatible chemicals should be stored separately. Appropriate labels should be securely
attached on each chemical waste container indicating the corresponding
chemical characteristics of the chemical waste, such as explosive, flammable,
oxidizing, irritant, toxic, harmful, corrosive, etc. Licensed
collector should
be deployed to transport and dispose of
the chemical wastes, to the licensed Chemical Waste Treatment
Centre, or licensed facilities, in accordance with the Waste
Disposal (Chemical Waste) (General) Regulation. |
To minimize impacts resulting from collection and transportation of chemical waste for off-site disposal |
Managing Authority of the BCP |
BCP and its associated facilities |
Operation phase |
Waste Disposal (Chemical Waste) (General) Regulation and Code of Practice on the
Packaging, Labelling and Storage of Chemical Wastes |
|
Land
Contamination (Construction) |
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8.7 |
7 |
The following measures are for
contaminated material excavation and transportation: §
To minimize the chance for construction workers to come into contact with
any contaminated materials, bulk earth-moving excavation equipment should be
employed; §
Contact with contaminated materials can be minimised by wearing
appropriate clothing and personal protective equipment such as gloves and
masks (especially when interacting directly with contaminated material),
provision of washing facilities and prohibition of smoking and eating on
site; §
Stockpiling of contaminated excavated materials on site should be
avoided as far as possible; §
The use of contaminated soil for landscaping purpose should be avoided
unless pre-treatment was carried out; §
Vehicles containing any excavated materials should be suitably covered
to reduce dust emissions and/or release of contaminated wastewater; §
Truck bodies and tailgates should be sealed to stop any discharge; §
Only licensed waste haulers should be used to collect and transport
contaminated material to treatment/disposal site and should be equipped with
tracking system to avoid fly tipping; §
Speed control for trucks carrying contaminated materials should be
exercised; §
Observe all relevant regulations in relation to waste handling, such
as Waste Disposal Ordinance (Cap 354), Waste Disposal (Chemical Waste)
(General) Regulation (Cap 354) and obtain all necessary permits where
required; and §
Maintain records of waste generation and disposal quantities and
disposal arrangements. |
To minimize the potentially adverse effects on the health and safety of construction workers and impacts arising from the disposal of potentially contaminated materials (if any). |
Contractor |
Construction sites (General) |
Construction phase |
EIA recommendations |
|
Ecological
Impact |
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|
9.8 |
8 |
Protection of retained habitats §
Clear demarcation of site boundary to avoid construction disturbance
to offsite habitats; §
Retained habitats should be properly protected during the construction
stage; §
Minimising habitat loss particularly woodland as far as possible in
detailed design |
Avoid and minimize impacts on retained habitats |
Contractor |
Construction Work Sites |
During detailed design and construction phases |
EIA recommendation and Annex 16 of EIAO-TM |
|
|
9.8 |
8 |
Compensation of woodland habitats §
Provision of a Woodland Compensation Area of about 18.6ha to mitigate
permanent loss of 6.2ha of woodland habitats §
Preparation of an updated Woodland Compensation Plan for final review
before implementation based on the Woodland Compensation Plan of the EIA
report |
To compensate permanent loss of woodland |
Contractor |
Potential |
During detailed design and construction phases |
EIA recommendation and Annex 16 of EIAO-TM |
|
|
9.8 |
8 |
Mitigation measures for Floral Species of
Conservation Interest Aquilaria
sinensis §
Transplanting all transplantable healthy and young individuals and
seedlings as far as possible §
in-situ preservation should be re-considered throughout all stages of
the project § Including the species into the planting list for woodland compensation § The minimum compensation ratio of Aquilaria sinensis seedlings to affected individuals of Aquilaria sinensis unable to be transplanted is 3:1 |
Mitigate the removal impact on floral species of conservation interest |
Contractor |
Suitable undisturbed habitats along the Project alignment for transplanted individuals; Compensatory planting on Woodland Compensation Area |
During detailed design and construction phases |
EIA recommendation and Annex 16 of EIAO-TM; and ETWB TCW 3/2006 |
|
|
9.8 |
8 |
Mitigation measures for Floral Species of
Conservation Interest Euonymus
kwangtungensis §
Transplanting the affected individual to undisturbed habitat § in-situ preservation should be re-considered throughout all stages of the project |
Mitigate the removal impact on floral species of conservation interest |
Contractor |
Undisturbed habitat at Loi Tung area (Section 5) |
During detailed design and construction phases |
EIA recommendation and Annex 16 of EIAO-TM |
|
|
9.8 |
8 |
Vegetation Survey for Floral Species of
Conservation Interest §
conduct field survey to confirm the condition of floral species of
conservation interest identified in the EIA (Euonymus kwangtungensis and seedlings/ individual trees of Aquilaria sinensis) §
Prepare an updated location plan showing the individuals identified
during the vegetation survey § Identification of suitable
reception site(s) in retained woodland habitat within the project limit for
the shrub species Euonymus
kwangtungensis § Identification of suitable
reception site(s) within the proposed compensatory woodland or otherwise a
temporary transit nursery, for the tree species Aquilaria sinensis § Recommendation of an
implementation programme of transplanting |
Update the condition of floral species of conservation interest |
Contractor |
Affected woodland habitats within the Works Area |
Before the commencement of construction works |
EIA recommendation and Annex 16 of EIAO-TM |
|
|
9.8 |
8 |
Compensation of wetland habitats §
Creation of Wetland Compensation Area (WCA) more than 1.4 ha to
mitigate permanent loss of 1.4ha wetland habitats. §
Details of the wetland compensation and the monitoring plan would be
formulated and provided under a Habitat Creation and Management Plan during
the detailed design stage |
To compensate permanent loss of wetland |
Contractor |
Potential Wetland Compensation Area |
During detailed design and construction phases |
EIA
recommendation and Annex 16 of EIAO-TM |
|
|
9.8 |
8 |
Impact
of Bird Collision with Noise Barrier §
Avoid transparent materials in the design of noise barrier §
Adopt bird-friendly design such as the use of coloured panels, falcon
sticker, embedded opaque stripes and superimposed patterns of thin opaque
stripes for the proposed noise barrier panels |
To avoid bird
mortality due to collision with noise barrier |
Contractor |
Locations
with erection of noise barrier (e.g. Loi Tung and Fanling Highway
Interchange) |
During detailed design and construction phases |
EIA
recommendation and HyD Practice Notes No. BSTR/PN/003 |
|
|
9.8 |
8 |
Mitigation
to Glare Disturbance to Wildlife § Control of night time
lighting glare shall be implemented to minimize glare impact to adjacent wildlife. |
To minimize glare impact to adjacent wildlife |
Contractors |
Construction Work Sites |
During Construction |
EIA
recommendation |
|
|
9.8 |
8 |
Mitigation
to Noise Disturbance to Wildlife The following noise reduction measures shall be considered as far as practicable during operation: §
Choose quieter plant such as those which have been effectively
silenced; §
Include noise levels specification when ordering new plant (including
chillier and E/M equipment); §
Locate fixed plant in walled plant rooms or in specially designed
enclosures; §
Locate noisy machines in a basement or a completely separate building; §
Install direct noise mitigation measures including silencers, acoustic
louvers and acoustic enclosure where necessary; and § Develop and implement a
regularly scheduled plant maintenance programme so that equipment is properly
operated and serviced in order to maintain a controlled level of noise.
|
To minimize the impact to wildlife |
Contractors |
BCP, |
Before Operation |
EIAO and NCO |
|
|
9.8 |
8 |
Mitigation
to Anthropogenic Disturbance § Buffer planting shall be
provided for screening the proposed structures and associated facilities.
§ Install screen hoarding to
minimize disturbance to wildlife in construction phase. |
To screen the proposed structures and associated
facilities. |
Contractors |
In proximity to proposed new development structures
and associated facilities. |
During Construction/Operation. |
EIA
recommendation |
|
|
9.8 |
8 |
Mitigation
to Habitat Fragmentation §
Landscape fragmentation should be kept to
a minimum and key wildlife routes preserved as far as possible (i.e. OM1 of
EM&A Manual Chapter 10). §
Provision of landscape plantings (i.e.
OM3-7 of EM&A Manual Chapter 10) |
To minimize the obstruction on wildlife movement |
Contractors |
All viaduct sections |
Operation phase |
EIA Recommendation |
|
Fisheries
Impact |
||||||||
|
|
|
No mitigation measure is required. |
|
|
|
|
|
|
Landscape,
Visual and Glare Impact |
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|
11.6.3 – Table 11.16 (CM1) |
10 |
Tree Protection and Preservation Trees/ woodland within the works area will be protected and preserved during the detailed design stage and construction phase. |
To reduce the loss of, and protect, existing trees. |
Contractors |
Construction Work Sites. |
During Detailed Design & Construction Phases |
EIA recommendation and ETWB TCW No. 29/2004 and 3/2006 |
|
|
11.6.3
– Table 11.16 (CM2) |
10 |
Tree Transplantation Should removal of trees be unavoidable due
to construction impacts, trees will be transplanted where technically
feasible. |
To reduce the loss of existing trees by transferring them to a different location. |
Contractors |
Construction Work Sites. |
During Construction Phase |
EIA recommendation and ETWB TCW No. 3/2006 |
|
|
11.6.3
– Table 11.16 (CM3) |
10 |
Decorative
Screen Hoarding Decorative screen hoarding will be erected
along areas of the construction works site boundary where the works site
borders publically accessible routes and/or is close to visually sensitive
receivers (VSRs) to screen undesirable views of the works site. It is
proposed that the screening be compatible with the surrounding environment
and where possible, non-reflective, recessive colours be used. |
To screen undesirable views of the construction site. |
Contractors |
Construction Work Sites. |
During Construction Phase |
EIA recommendation |
|
|
11.6.3
– Table 11.16 (CM4) |
10 |
Light Control Construction and night time lighting glare
will be controlled to minimize glare impact to adjacent VSRs during the
construction stage. |
To minimize glare impact to adjacent VSRs. |
Contractors |
Construction Work Sites. |
During Construction Phase |
EIA recommendation |
|
|
11.6.3
– Table 11.16 (CM5) |
10 |
Topsoil
reuse Excavated topsoil should be conserved for
re-use by the Project or other projects. |
To preserve and reuse existing topsoil as much as possible. |
Contractors |
Construction Work Sites. |
During Construction Phase |
EIA recommendation |
|
|
11.6.3
– Table 11.16 (CM6) |
10 |
Watercourse Impact Mitigation Where
watercourses are anticipated to be unavoidably affected, for natural/ semi-natural watercourses,
these will be modified to achieve a natural appearance similar to existing. A
proposed Wetland Compensatory Area is also included within the Project Site
and this will accommodate the natural watercourse currently existing in the
proposed area. For channelized watercourses these will be
modified to match the existing and some additional enhancement planting
should be implemented to upgrade these channels. Bridges will be used to minimise the
necessity of watercourse modification, and box culverts will also be used to
protect watercourses where necessary. |
To preserve existing watercourse landscape with minimal modification and adopt as natural a form as possible. |
Contractors |
Construction Work Sites. |
During Construction Phase |
EIA recommendation |
|
|
11.6.3
– Table 11.16 (OM1) |
10 |
Detailed Design Considerations Detailed
design of development components should aim to reduce landscape footprint and visibility of structures. The area
allowed for any development components should be reduced to a practical
minimum. |
To reduce architectural footprint on the land and minimise visibility of structures. |
Detailed designer/ Consultants |
Proposed new development structures. |
During Detailed Design & Construction/ Operation Phase |
EIA recommendation |
|
|
11.6.3
– Table 11.16 (OM2) |
10 |
Aesthetically Pleasing Design The form, textures, finishes and colours of
the proposed development components should be compatible with the existing
surroundings. Light earthy tone colours such as shades of green, shades of
grey, shades of brown and off-white may be utilised where technically feasible
to reduce the visibility of the development components, including all
roadwork, buildings and noise barriers etc. To further improve visual
amenity, natural building materials such as stone and timber, should be
preferably adopted for architectural features, where technically feasible. |
To reduce visibility of structures and increase their compatibility with the surrounding environment. |
Detailed designer/ Consultants |
Proposed new development structures. |
During Detailed Design & Construction/ Operation Phase |
EIA recommendation |
|
|
11.6.3
– Table 11.16 (OM3) |
10 |
Compensatory Planting All
compensatory planting of trees is to be carried out in accordance with ETWB TCW No. 03/2006. Section 9 (Ecology) contains further details
of the compensatory planting specifically for woodland. A total woodland
compensation area of 18.6 ha is proposed. In view of the maturity of the
secondary woodland impacted, a higher compensation ratio is proposed and
details can be found in the proposed Woodland Compensation Plan in Appendix
9.4. For key LRs containing substantial numbers of affected trees, Table 11.15a
gives an approximation of the number of trees to be planted to compensate for
the trees felled in each of these key LRs. Some
compensatory shrub and ground cover
planting will also be provided. Space is to be allowed on both sides of the associated road works, on the
peripheries of both BCP and the Middle Ventilation building for such planting.
This area of compensatory shrub and ground cover planting is approximately 21
ha in size over the whole project area. In addition, a Wetland Compensation Area
(WCA) is proposed to compensate for some wet areas of farmland and shrubby
grassland on lowland Section 9 (Ecology) contains further details of the WCA
with Figure 9.28 showing a
conceptual plan of the area. Details of the Wetland Compensation Plan (WCP)
would be formulated and provided under a Habitat Creation and Management Plan
during the detailed design stage. |
To compensate for loss of trees and some shrubs due to the Project. |
Contractors |
Proposed new development structures. |
During Construction/ Operation Phase |
EIA recommendation and ETWB TCW No. 03/2006. |
|
|
11.6.3
– Table 11.16 (OM4) |
10 |
Buffer Tree Planting Tree planting shall be provided to screen the proposed structures and associated facilities. In addition, the compensatory shrub and ground cover planting detailed in OM3 will provide screening and improve compatibility with the surrounding environment. |
To screen the proposed structures and associated facilities including roads. |
Contractors |
In proximity to proposed new development structures and associated facilities. |
During Construction/ Operation Phase |
EIA recommendation |
|
|
11.6.3
– Table 11.16 (OM5) |
10 |
Aesthetic Improvement Planting - Viaduct Structure Planters will be provided for trailer
planting to soften the hard, straight edges of the viaduct. Where space
allows for planters, climbers are proposed to cover vertical, hard surfaces of
the piers. |
To soften the hard edges on the viaduct and maximize greening opportunity. |
Contractors |
Viaduct Structure. |
During Construction/ Operation Phase |
EIA recommendation |
|
|
11.6.3
– Table 11.16 (OM6) |
10 |
Aesthetic Improvement Planting – Under Viaduct Shade
tolerant plants will be planted, where
light is sufficient, to improve aesthetic value of areas under
viaducts. |
To reduce visible impact of area under viaduct and maximize greening opportunity. |
Contractors |
Proposed new development structures. |
During Construction Phase |
EIA recommendation |
|
|
11.6.3
– Table 11.16 (OM7) |
10 |
Landscaped Slope Where
existing hillside slopes are anticipated to be modified (eg cut slope at the
portals of the tunnel sections and embankments along the alignment) the final
slope surface will be landscaped by hydroseeding, tree or shrub planting
where slope gradient allows. |
To prevent soil erosion and reduce visible impact of man-made slopes. |
Contractors |
Construction Site Works. |
During Construction/ Operation Phase |
EIA recommendation,
GEO Publication No. 1/2009 and ETWB TCW No. 17/2000 |
|
|
11.6.3
– Table 11.16 (OM8) |
10 |
Green Roof Green roofing should be established on
proposed buildings to reduce exposure to untreated concrete surfaces and
mitigate visual impact to VSRs at high levels. |
To reduce exposure to untreated concrete surfaces, reduce visual impact to VSRs at high levels and maximize greening opportunity. |
Contractors |
Proposed new buildings. |
During Construction/ Operation Phase |
EIA recommendation |
|
|
11.6.3
– Table 11.16 (OM9) |
10 |
Vertical Greening Vertical planting should be established to
soften the hard, vertical surfaces of the proposed development components.
These components will include walls of administration and ventilation
buildings, retaining walls and road abutments. |
To reduce visible impact of proposed new structures and facilities and maximize greening opportunity. |
Contractors |
Proposed new development structures. |
During Construction/ Operation Phase |
EIA recommendation |
|
|
11.6.3
– Table 11.16 (OM10) |
10 |
Roadside Amenity Planting Roadside amenity planting should be
provided, to enhance the landscape and visual quality of the existing and
proposed transport routes and car parks. |
To soften edges of the proposed engineer structures and associated facilities and enhance the landscape and visual quality of the existing and proposed road. |
Contractors |
Proposed new development structures. |
During Construction/ Operation Phase |
EIA recommendation |
|
|
11.6.3
– Table 11.16 (OM11) |
10 |
Reinstatement Certain areas
unavoidably disturbed by the Project will be reprovisioned. The Existing
farmland, rural built/open storage areas and industrial/factory areas will
not be reinstated but such areas affected should be conditioned to suit
future land use. For reinstatement involving planting measures, refer to
other mitigation measures e.g. for woodland/shrubby grassland/vegetated
slopes, see CM1, CM2, OM3, OM7. For watercourse, see CM6. |
Particularly aimed at temporarily disturbed areas, to reduce long term impact on landscape. |
Contractors |
Construction Site Works. |
During Construction/ Operation Phase |
EIA recommendation |
|
|
11.6.3
– Table 11.16 (OM12) |
10 |
Light Control Street and night time lighting glare will be
controlled to minimize glare impact to adjacent VSRs during the operation
stage. |
To minimize glare impact to adjacent VSRs. |
Contractors |
Lit areas around proposed new development buildings and along roads. |
During Operational Phrase |
EIA recommendation |
|
|
11.6.3 - Table 11.16
(OM13) |
10 |
Reprovisioned
The Open Space of Wo Keng Shan public garden
falls within the Project Site and will be reprovisioned to reprovide the
amenities of the garden on a one to one basis e.g. existing trees, benches
etc will be re-provided in the new garden. The proposed location of the reprovisioned
garden is near the existing location and shown on Figure 11.7.4 and this is
subject to confirmation by CEDD and LCSD. |
To compensate for loss of Open Space due to the
Project. |
Contractors |
Near existing Wo
Keng Shan public garden, subject to confirmation by CEDD and LCSD |
During Construction/ Operation Phase |
EIA
recommendation |
|
Cultural
Heritage Impact |
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|
Built
Heritage |
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|
12.6.2 |
11.2.1.1 |
Conducting
Photographic and Cartographic Records Prior to Removal of Impacted Prior to removal of the directly impacted
graves (GR01, GR02, GR05, GR06, GR08, GR10, GR13, GR15, GR16, GR17, GR18,
GR19 and GR20), built structure (BS64 and BS65) and
cultural/historical landscape feature (LF08), photographic and cartographic records should be conducted to preserve
them by record. Liaison with and
obtaining agreement from the descendents of these features will be carried out by Lands Department. |
To preserve the directly impacted sites by record prior to their removal / relocation |
Contractor and Project Proponent |
GR01, GR02, GR05, GR06, GR08, GR10, GR13,
GR15, GR16, GR17, GR18,,GR19, GR20, BS64, BS65 and LF08 (see Figures 12.2.1, 12.2.3, 12.2.7, 12.2.9b, 12.2.9c, 12.2.10c, 12.2.18 and 12.2.21 of the EIA Report) |
Prior to Removal / Relocation of features before commencement of construction works |
EIA recommendation and AMO Guidelines on Photographic Record and Cartographic Record |
|
|
12.6.2 |
11.2.1.2 |
Undertaking
baseline condition survey and baseline vibration impact assessment In case any potential vibration impact on any
nearby built heritage features are identified during detailed design stage of
the Project, prior to commencement of construction works, a baseline
condition survey and baseline vibration impact assessment should be conducted by a qualified building surveyor and a qualified
structural engineer to define the vibration limit based on the baseline
survey findings result and detailed design of construction works and to
evaluate if construction vibration monitoring and structural strengthening measures are required during construction stage to ensure
the construction performance meets with the vibration criteria to be agreed
with the AMO. |
To minimize the vibration impacts during detailed design stage on any identified potential vibration impacted built heritage features |
Contractor and Project Proponent |
Any built
heritage features potentially impacted by the nearby works boundary of the
Project |
Detailed design stage before commencement of construction works |
EIA recommendation |
|
|
12.6.2 |
11.2.1.3 |
Temporary
diversion of grave access during construction phase and re-provision of grave
access after completion of construction works Access of the grave GR03
will temporarily be affected by the proposed works during construction phase.
Temporary access division will be provided during the construction works so
that access to the grave will not be blocked as a result of the construction
works. After completion of construction works, the affected access route is
required to be re-provided. |
To ensure the grave is accessible during construction
phase and the original access to the grave will be reinstated and re-provided
after completion of construction works. |
Contractor and Project Proponent |
GR03 |
During and after construction phase |
EIA
recommendation |
|
|
Archaeology |
||||||||
|
12.6.1 |
11.2.2.1 |
Undertaking Survey-cum-Rescue Excavation A Survey-cum-Rescue Excavation should be
conducted after land resumption and before the commencement of construction
works to further investigate the archaeological remains and to preserve the
archaeological remains, if any, confirmed by the survey. The excavation should be conducted by a professional archaeologist who
should obtain a licence to Excavate and Search for Antiquities from the
Authority under the AM Ordinance. |
To further
investigate the archaeological remains and to preserve the archaeological
remains, if any, confirmed by the survey |
Project Proponent |
Area around TP0505 as listed in Table 12.28 and shown
in Figure 12.6.2 in EIA
Report |
After land resumption and before commencement of construction works |
EIA
recommendation and AMO Guidelines |
|
|
12.6.1 |
11.2.2.2 |
Undertaking Further Archaeological Survey to Cover the Outstanding
Areas Further archaeological
surveys
to cover the outstanding areas should be implemented after land resumption
and before commencement of construction works to confirm and verify the findings of
the EIA. The survey should be conducted by a
professional archaeologist who should obtain a licence to Excavate and Search
for Antiquities from the Authority under the AM Ordinance. It should be noted that the scope of
further archaeological survey is based on the current proposed
alignment. Any additional works areas
which have not been covered by the current archaeological impact assessment
should be covered as soon as possible.
Subject to the findings of the archaeological survey to be conducted
after land resumption, additional mitigation measures would be designed and
implemented before the commencement of construction works to mitigate the
adverse impact. |
To confirm and verify the findings of the EIA |
Project Proponent |
Sections as listed in Table 12.28 and
shown in
Figure 12.6.1 to
12.6.6 in EIA Report. |
After land resumption and before commencement of construction works |
|
|