Table of Contents
14. implementation schedule of recommended mitigation measures
Table
14‑1 Implementation
Schedule of Recommended Mitigation Measures
Table 14‑1 Implementation
Schedule of Recommended Mitigation Measures
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EIA Ref |
Environment Protection
Measures |
Location / Timing |
Implementation Agent |
Implementation Stages* |
Relevant Legislation
and Guidelines |
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D |
C |
O |
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Section 3 3.3.4.3 |
Noise
Mitigation
Construction
Mitigation Measures
Selection and Programming of Construction
Processes
The timing and
sequencing of the various construction activities shall be carefully arranged
according to the actual site work situation, in order to limit the amount of
concurrent activities and where applicable, to avoid parallel operation of noisy
PME in order to minimize the total noise generated during construction
periods. Limiting the quantity of PME
to be operated concurrently and also their on-time percentage were
recommended in the Project and incorporated in this assessment. The proposed
quantity of PMEs and their percentage on-time have been confirmed feasible by
the Project Engineer and the Proponent. In the case during school examination
while more stringent construction noise criteria should be imposed, the
potentially most disruptive construction activities should be avoided, and
arranged to be conducted during school holidays as far as practicable. In
particular, NSR 39 (Salvation Army Ng Kok Wai Memorial Kindergarten) is of
close proximity to works area S5 and subject to high level of unmitigated
construction noise. It is recommended that the work stages “transportation
& utilities diversion” and “piling” shall not take place simultaneously
during operation time of the kindergarten for the same location in works area
S5, such that cumulative noise to this kindergarten is further minimized.
This requirement will be specified in the EM&A Manual for Contractor to
follow. |
Within the boundaries
of all construction sites / Operation Time (07:00-19:00 from Monday to Saturday except public holiday) |
HyD & Contractor |
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ü |
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TM on EIA Process, NCO |
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3.3.4.4 |
Use of “Quiet” Alternative Plant and Working
Methods
The use of particular
plant with equipment noise levels quieter than those specified in the GW-TM.
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Within the boundaries of all construction sites /
Operation Time (07:00-19:00 from Monday
to Saturday except public holiday) |
HyD & Contractor |
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ü |
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TM on EIA Process,
NCO
Noise from Construction
Work Other Than Percussive Piling (GW-TM)
|
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3.3.4.5 |
“Quiet” plant is
defined as a PME having actual Sound Power Levels (SWLs) lower than the
values specified for PME in the GW-TM.
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Within the boundaries of all construction sites /
Operation Time (07:00-19:00 from Monday
to Saturday except public holiday) |
HyD & Contractor |
|
ü |
|
TM on EIA Process,
NCO
Noise from Construction
Work Other Than Percussive Piling (GW-TM)
|
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3.3.4.7 |
Temporary noise
barriers provide noise attenuation by screening NSRs from stationary and
mobile plants from direct line-of-sight in shadow zone. The use of 3m high
movable barriers with skid footing and a small cantilevered upper portion can
be adopted. The barrier material shall have a surface mass of not less than
14kg/m2 on skid footing with 25mm thick internal sound absorptive lining to
achieve the maximum screening effect.
The temporary noise
barriers should also be located along the working area in order to make sure
that the construction plant could be screened during all kinds of
construction activities as far as practicable.
A
solid hoarding will also be provided along the NSR 39 of height not less than 3m and length well cover
the NSR39, so as to further reduce the construction noise impacts at NSR39.
|
Within the boundaries of all construction sites /
Operation Time (07:00-19:00 from Monday
to Saturday except public holiday) |
HyD & Contractor |
|
ü |
|
TM on EIA Process,
NCO
Noise from Construction
Work Other Than Percussive Piling (GW-TM) |
|
3.3.4.8 |
Depending on site
situation, when temporary noise barriers are not practicable or noise
reduction achieved is insufficient, noise jacket/muffler can be applied to
cover the noisy part of the engine or at the engine exhaust of particular
mobile plants respectively.
Applicable PME with temporary noise barrier include road roller,
excavator, mobile crane, hand-held breaker, poker vibrator, excavator mounted
breaker, asphalt paver, vibratory roller and paint line marker.
Considered the
practicability, the site access of dump trucks would not be screened by
temporary barrier; yet, the unloading activities of dump trucks should be
screened by temporary noise barriers.
|
Within the boundaries of all construction sites /
Operation Time (07:00-19:00 from Monday
to Saturday except public holiday) |
HyD & Contractor |
|
ü |
|
TM on EIA Process,
NCO
Noise from Construction
Work Other Than Percussive Piling (GW-TM) |
|
3.3.4.9 |
For the stationary
plant bored pile oscillator, temporary noise barriers of sufficient height
with skid footing and small cantilevered upper portion can provide total
screening to the NSRs. It is estimated that temporary noise barriers of this
type can provide full screening of 10 dB(A) to the NSRs. This is considered
achievable by careful selection of insulation material, and, if necessary,
acoustic mats at noisy mechanical parts of the equipment. Barrier material of
surface density of at least 14 kg/m2 is recommended in order to achieve the
necessary screening effect.
|
Within the boundaries of all construction sites /
Operation Time (07:00-19:00 from Monday
to Saturday except public holiday) |
HyD & Contractor |
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ü |
|
TM on EIA Process,
NCO
Noise from Construction
Work Other Than Percussive Piling (GW-TM) |
|
3.3.4.10 |
Full noise enclosures,
which completely cover the PME, can provide significant noise reduction up to
20 dB(A). The degree of reduction
will vary depending on the nature of the material used for the enclosures.
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Within the boundaries of all construction sites /
Operation Time (07:00-19:00 from Monday
to Saturday except public holiday) |
HyD & Contractor |
|
ü |
|
TM on EIA Process,
NCO
Noise from Construction
Work Other Than Percussive Piling (GW-TM) |
|
3.3.4.11 |
The use of good site
practice/techniques can provide considerable reductions in noise
emissions. Examples of these site
practice include:
·
use of well-maintained and regularly-serviced
plant during the works;
·
plant operating on intermittent basis should be
turned off or throttled down when not in active use;
·
plant that is known to emit noise strongly in one
direction should be orientated to face away from the NSRs;
·
silencers, mufflers and enclosures for plant
should be used where possible and maintained adequately throughout the works;
·
where possible fixed plants should be sited away
from NSRs; and
·
stockpiles of excavated materials and other
structures such as site buildings should be used effectively to screen noise
from the works.
|
Within the boundaries of all construction sites /
Operation Time (07:00-19:00 from Monday
to Saturday except public holiday) |
HyD & Contractor |
|
ü |
|
TM on EIA Process,
NCO
Noise from Construction
Work Other Than Percussive Piling (GW-TM) |
|
3.3.7.1 |
Environmental monitoring
and audit measures are recommended during the construction phase of the
Project. A proactive EM&A
programme is necessary to be provided by the Contractor, in order to ensure
that construction noise impact to the NSRs should be minimized as far as practicable.
An appropriate path for noise complaints handling procedures is a key element
of the EM&A programme.
|
Within the boundaries of all construction sites /
Operation Time (07:00-19:00 from Monday
to Saturday except public holiday) |
HyD & Contractor |
|
ü |
|
TM on EIA Process,
NCO
Noise from Construction
Work Other Than Percussive Piling (GW-TM) |
|
Table 3-8 |
Operational Mitigation
Measures
Proposed
noise mitigation measures along the DP roads of the project include:
(C1) 5.5m with 3.5m
cantilevered barrier length of 200m
(C2) 5.5m with 3.5m
cantilevered barrier length of 371m
(C3) 5.5m with 3.5m
cantilevered barrier length of 560m
(C4) 5.5m with 3.5m
cantilevered barrier length of 104m
(C5) 5.5m with 3.5m
cantilevered barrier length of 635m
(C6) 5.5m with 3.5m
cantilevered barrier length of 334m
(S1) Semi-enclosure
length of 50m
(S2) Semi-enclosure
length of 229m
(S3) Semi-enclosure
length of 84m
(S4) Semi-enclosure
length of 105m
(F1) Full enclosure
length of 110m
(F2) Full enclosure
length of 93m
(F3) Full enclosure
length of 58m
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During the TWR Operation |
HyD |
ü |
ü |
ü |
TM on EIA Process, NCO |
3.2.8.1
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Road traffic noise
monitoring is recommended at representative NSRs during the first year of the
road opening.
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During the TWR Operation |
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ü |
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Section 4 4.6.3 |
Air Quality Mitigation
Construction
Mitigation Measures
The following site
practices are recommended to be fully implemented by Contractor, in order to
suppress dust emissions during construction work. Recommendations are represented in the form of contractual
clauses
·
The Contractor shall undertake at all times to
prevent dust nuisance as a result of his activities. Dust suppression
measures such as water spraying are necessary and should be installed to
ensure that the air quality at the boundary of the site and at any sensitive
receivers complies with the Hong Kong Air Quality Objectives
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Within the boundaries of all construction sites /
Operation Time (07:00 – 19:00 form Monday to Saturday except public holiday) |
Contractor/HyD |
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ü |
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APCO Air Pollution Control (Construction Dust)
Regulations AQOs TM (Annex 4) |
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·
The Contractor shall notify any specific
construction work as stated in the Air Pollution Control (Construction Dust)
Regulation to the Authority before the commencement of such work.
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ü |
ü |
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·
The Contractor shall apply for a licence or
permit under the requirements of the relevant legislation (e.g., Air
Pollution Control Ordinance and its subsidiary regulations) wherever
applicable.
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ü |
ü |
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4.6.3 |
·
Watering of unpaved areas, access roads, construction
areas and dusty stockpiles shall be undertaken at least eight times daily
during dry and windy weather. Watering of the haul road shall be undertaken
four to eight times daily during dry or windy weather. Water sprays may be
either fixed or mobile to follow individual areas to be wetted as and when
required. Application of suitable wetting agents, such as dust suppression
chemicals, shall be used in addition to water, especially during the dry
season (November to March)
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Within the boundaries
of all construction sites / Operation Time (07:00 – 19:00 form Monday to
Saturday except public holiday) |
Contractor/HyD |
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ü |
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APCO Air Pollution Control (Construction Dust)
Regulations AQOs TM (Annex 4) |
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·
Effective water sprays shall be used during the
delivery and handling of all raw sand and aggregate, and other similar
materials, wet dust is likely to be created and to dampen all stored
materials during dry and windy weather
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ü |
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·
Stockpiles of sand, aggregate or any other dusty
materials greater than 20 m3 shall be enclosed on three sides, with walls
extending above the pile and 1 metre beyond the front of the pile
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ü |
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·
Suitable chemical wetting agent such as dust
suppression chemical shall be used on completed cuts and fills to reduce wind
erosion.
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ü |
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·
Areas within the construction site where there is
a regular movement of vehicles shall have a paved surface and be kept clear
of loose surface material.
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ü |
ü |
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·
The Contractor shall restrict all motorized
vehicles within the construction site, excluding those on public roads, to
maximum speed of 20 km per hour and confine haulage and delivery vehicles to
designated roadways inside the Site.
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ü |
ü |
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4.6.3 |
·
Construction working areas will be restricted to
a minimum practicable size.
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Within the boundaries of all construction sites /
Operation Time (07:00 – 19:00 form Monday to Saturday except public holiday) |
Contractor/HyD |
ü |
ü |
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APCO Air Pollution Control (Construction Dust)
Regulations AQOs TM (Annex 4) |
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·
The Contractor shall ensure that no earth, rock
or debris is deposited on public or private rights of way as result of his
activities, including any deposits arising from the movement of plant or
vehicles.
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ü |
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·
The Contractor shall provide a wheel washing
facility at the exits from work areas to the satisfaction of the Engineer and
to the requirements of the Commissioner of Police. Water in wheel washing
facilities and sediment shall be changed and removed respectively at least
once a month.
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ü |
ü |
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·
The Contractor shall submit details of the wheel
washing facilities; such shall be usable prior to any earthworks excavation
activity on the construction site. The Contractor shall also provide a
hard-surfaced road between any washing facility and the public road.
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ü |
ü |
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·
In the event of any spoil or debris from
construction works being deposited on adjacent land, or streams, or any silt
being washed down to any area, then all such spoil, debris or material and
silt shall be immediately removed and the affected land and areas restored to
their natural state by the Contractor to the satisfaction of the Engineer.
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ü |
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·
If spoil cannot be immediately transported out of
the Site, stockpiles should be stored in sheltered areas.
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ü |
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4.6.3 |
·
Plant and vehicles shall be inspected annually to
ensure that they are operating efficiently and that exhaust emissions are not
causing a nuisance. All Site vehicle exhausts should be directed vertically
upwards or directed away from ground.
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Within the boundaries of all construction sites /
Operation Time (07:00 – 19:00 form Monday to Saturday except public holiday) |
Contractor/HyD |
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ü |
|
APCO Air Pollution Control (Construction Dust)
Regulations AQOs TM (Annex 4) |
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·
Path for complaints and handling procedures
should be set up and implement.
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ü |
ü |
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4.7.1 |
With the implementation
of the proposed dust suppression measures, good site practices and dust
monitoring and audit programme, no adverse dust impact would be expected at
the ASRs. Details of the monitoring
requirements such as monitoring locations, frequency of baseline and impact
monitoring are presented in the EM&A manual separate for this report.
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Within the boundaries of all construction sites /
Operation Time (07:00 – 19:00 form Monday to Saturday except public holiday) |
Contractor/HyD |
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ü |
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TM on EIA process, |
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Section 5 5.7.1 |
Water Quality
Mitigation
Construction
Mitigation Measures
Silt-laden surface
run-off should be prevented from directly entering the sensitive receivers
during the construction works. The mitigation measures described below for
the construction phase are in accordance with ProPECC PN 1/94:
a) Works sites and areas
used for imported fill stockpiling should, as far as possible, avoid the
water sensitive receivers.
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Within the boundaries of all construction sites /
Operation Time (07:00 – 19:00 form Monday to Saturday except public holiday) |
Contractor |
ü |
ü |
|
TM on EIA process, WPCO, ProPECC PN 1/94 |
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5.7.1 |
b) Stripping of existing
vegetation should be sequential to avoid exposure of large areas of
embankment slopes;
c) Special precautions
should be taken when working in the near vicinity of nullahs and streams,
especially when bridges along the TWR are being widened. This may involve the
installation of temporary drainage works to ensure that runoff does not enter
the nullahs directly; typical example of this type of measure is the
provision of suitable temporary drainage system, such as peripheral channels
around the site, to intercept all on-site runoff to water quality treatment
devices such as sedimentation pond / sand trap. Only treated runoff from these devices will be discharged
offsite. Sizes and arrangement
details of these drainage works depend on local conditions and will be
addressed during the detailed design stage.
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Within the boundaries of all construction sites /
Operation Time (07:00 – 19:00 form Monday to Saturday except public holiday) |
Contractor |
ü ü |
ü ü |
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TM on EIA process, WPCO, ProPECC PN 1/94 |
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d) Perimeter cut-off
drains to direct off-site water around the works sites should be constructed
and internal drainage works and erosion and sedimentation control facilities
implemented. Channels, earth bunds or sandbag barriers should be provided on
site to direct stormwater to silt removal facilities. The design of efficient
silt removal facilities should be based on the guidelines provided in ProPECC
PN 1/94;
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ü |
ü |
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e) Sediment tanks of
sufficient capacity, constructed from pre-formed individual cells of
approximately 6-8 m3 capacity are adopted as a general mitigation measure
which can be used for settling wastewaters prior to disposal. The tanks are
readily available and used primarily for recycling water for bored piling
operations. The system capacity is flexible and able to handle multiple
inputs from a variety of sources and particularly suited to applications
where the influent is pumped. Various physical and chemical filters such
infiltration tank can be added should refinement of the sedimentation process
be required;
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ü |
ü |
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5.7.1 |
f) Construction works
should be programmed to minimise surface excavations/ cutting during the
rainy season (April to September). If excavation of soil cannot be avoided
during the rainy season, or at any time of year when rainstorms are likely,
exposed slope surfaces should be covered by a tarpaulin or other means. Other
measures that need to be implemented before, during and after rainstorms are
summarised in ProPECC PN 1/94. Particular attention should be paid to the
control of silty surface run-off during storms events, especially for sites
located near steep slopes;
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Within the boundaries of all construction sites /
Operation Time (07:00 – 19:00 form Monday to Saturday except public holiday) |
Contractor |
ü |
ü |
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TM on EIA process, WPCO, ProPECC PN 1/94 |
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g) All exposed earth areas
should be completed and re-vegetated promptly after earthworks have been
completed, or alternately, within 14 days of the cessation of earthworks.
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ü |
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h) Earthworks final
surfaces should be well compacted and subsequent permanent work or surface
protection should be carried out immediately after final surfaces are formed
in order to prevent rainstorm erosion;
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ü |
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i) The overall slope of
the site should be kept to a minimum to reduce the erosive potential of
surface water flows and all trafficked areas and access roads protected by
coarse stone ballast. An additional advantage accruing from the use of
crushed stone is the positive traction gained during prolonged periods of
inclement weather and the reduction of surface sheet flows;
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ü |
ü |
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j) Silt contained in
ground water and drilling water collected from any boring operations,
dewatering etc. should be removed with properly designed silt removal
facilities, such as the specified portable sedimentation tanks referred to
above, such that Technical Memorandum on Effluent Standards are achieved
prior to the discharge of waters;
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ü |
ü |
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5.7.1 |
k) All drainage facilities
and erosion and sediment control structures should be inspected monthly and
maintained to ensure proper and efficient operation at all times and
particularly following rainstorms. Deposited silt and grit should be removed
monthly and disposed of by spreading evenly over stable, non-sensitive
vegetated areas;
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Within the boundaries of all construction sites /
Operation Time (07:00 – 19:00 form Monday to Saturday except public holiday) |
Contractor |
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ü |
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TM on EIA process, WPCO, ProPECC PN 1/94 |
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l) Measures should be
taken to minimise the ingress of site drainage into excavations. If the
excavation of trenches in wet periods (June – October) is necessary, they
should be dug and backfilled in short sections. Water pumped out from
trenches or foundation excavations should be discharged into the silt removal
facilities;
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ü |
ü |
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m) All open stockpiles of
construction materials (e.g. aggregates, sand and fill material) should be
covered with a 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;
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ü |
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n) Manholes (including
newly constructed ones) should always be covered and temporarily sealed so as
to prevent silt, construction materials or debris being washed into the
drainage system;
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ü |
ü |
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5.7.1 |
o) All vehicles and plant
should be cleaned before leaving the construction site to ensure no earth,
mud and debris is deposited on roads. An adequately designed and sited wheel
washing bay should be provided at every site exit and wash-water should have
sand and silt settled out and removed at least on a weekly basis to ensure
the continued efficiency of the process.
p) The section of access
road leading to, and exiting from the wheel-wash bay to the public road
should be paved with sufficient backfill toward the wheel-wash bay to prevent
vehicle tracking of soil and silty water to public roads and drains;
q) Water used for
construction purposes on site should, as far as practical, be recycled for use;
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Within the boundaries of all construction sites /
Operation Time (07:00 – 19:00 form Monday to Saturday except public holiday) |
Contractor |
ü |
ü |
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TM on EIA process, WPCO, ProPECC PN 1/94 |
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r) Information detailing
storm run-off and wastewater discharge points, and the corresponding maximum
(or range of) volumes of discharges expected from the construction sites on a
dry day should be provided in the WPCO license application. In general,
assuming adequate information has been provided together with the license application,
EPD would need at least 20 days for the processing of a license for a
discharge. It is therefore recommended that the Contractor submit the licence
application to EPD as early as possible before the commencement of any
discharge.
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ü |
ü |
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5.7.3 |
Construction
Material
In order to prevent
water quality impact associated with construction material, the following
mitigation techniques are recommended:
a) Stockpiles of cement
and other construction material should be kept covered when not being used;
b) Stockpiles of cement
and other construction material should not be located adjacent to nullahs and
streams;
c) Entry points into the surface drainage
system should be fitted with oil interceptors;
d) Waste oils and other
chemical wastes as defined in the Waste Disposal (Chemical Waste) (General)
Regulation will require disposal by an appropriate means and could require
pre-notification to EPD prior to disposal. An appropriate disposal facility
could be the Chemical Waste Treatment Centre (CWTC) at Tsing Yi. If chemical
wastes are to be generated, the contractor will need to register with EPD as
a chemical waste producer and observe the requirements for chemical waste
storage, labelling, transportation and disposal.
e) Impacts associated with
spillages should be managed through careful handling procedures. Oils and
fuels should only be used and stored in designated areas which have pollution
prevention facilities. Fuel tanks and drums of fuel oils and other polluting
fluids/chemicals should be provided with locks and bunded to a capacity of
110% of the storage capacity of the largest tank. The bund should be drained
of rain water after raining event.
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Within the boundaries of all construction sites /
Operation Time (07:00 – 19:00 form Monday to Saturday except public holiday) |
Contractor |
ü |
ü |
|
TM on EIA process, WPCO, ProPECC PN 1/94 |
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5.7.4 |
Sewage from
Construction Workers
Sewage effluent arising
from the on-site construction workforce has the potential to cause water
pollution. Therefore, plans for the collection, treatment and disposal of
sewage wastewater during the construction phase must be specified. Sewage
generated on site should be disposed of through connection of the sanitation
facilities with the existing foul sewerage system. Where this is not possible,
temporary portable chemical toilets, septic tanks or package sewage treatment
plants may need to be used.
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Within the boundaries of all construction sites /
Operation Time (07:00 – 19:00 form Monday to Saturday except public holiday) |
Contractor |
ü |
ü |
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TM on EIA process, WPCO, ProPECC PN 1/94 |
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Section 6 6.6.3 |
Waste Management
Waste Management Plan
In accordance with
ETWBTC(W) No 15/2003 – Waste Management on Construction Site, the WMP should
be prepared and submitted for approval by the Architect/ Engineer/ Supervising
Officer prior to any construction activities. During the construction period
the WMP should be used as a working document to detail the on-going
management procedures and to record waste arising from construction works and
import of fill throughout the Contract. The WMP shall be subject to audit
under the requirements of the Environmental Monitoring and Audit (EM&A)
Procedures set out in the EM&A Manual accompanying this EIA Report.
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Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
ü |
ü |
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Waste Disposal Ordinance (Cap 354) Waste Disposal (Chemical Waste)(General)
Regulation (Cap 354) Land (Miscellaneous Provisions) Ordinance (Cap
28) Public Health and Municipal Services Ordinance
(Cap 132) – Public Cleansing and Prevention of Nuisances (Urban Council) and
(Regional Council) By-laws ETWBTC(W) No 15/2003 – Waste Management on
Construction Site |
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6.6.4 |
The WMP shall be
developed and implemented according to a best-practice philosophy of waste
management. There are various waste management options, which can be
categorized in terms of preference from an environmental viewpoint. The
options considered to be more preferable have the least impacts and are more
sustainable in a long-term context. The hierarchy is as follows:
·
avoidance and minimization,
i.e. avoiding or not generating waste through changing or improving practices
and design;
·
reuse of materials, thus avoiding disposal (generally
with only limited reprocessing);
·
recovery and recycling, thus avoiding disposal
(although reprocessing may be required); and
·
treatment and disposal, according to relevant
laws, guidelines and good practice.
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Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
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ü |
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Waste Disposal Ordinance (Cap 354) Waste Disposal (Chemical Waste)(General) Regulation
(Cap 354) Land (Miscellaneous Provisions) Ordinance (Cap
28) Public Health and Municipal Services Ordinance
(Cap 132) – Public Cleansing and Prevention of Nuisances (Urban Council) and
(Regional Council) By-laws |
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6.6.5 |
The Waste Disposal Authority should be consulted
by the Contractor on the final disposal of wastes. |
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
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ü |
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Waste Disposal Ordinance (Cap 354) Waste Disposal (Chemical Waste)(General)
Regulation (Cap 354) Land (Miscellaneous Provisions) Ordinance (Cap
28) Public Health and Municipal Services Ordinance
(Cap 132) – Public Cleansing and Prevention of Nuisances (Urban Council) and
(Regional Council) By-laws |
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6.6.6 |
The suitability (or
otherwise) of material for reuse on site shall be detailed in the WMP. If,
for any reason, the recommendations cannot be implemented, full justification
should be given in the WMP for approval by Architect/Engineer/Supervising
Officer according to ETWBTC(W) No. 15/2003.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
ü |
ü |
|
Waste Disposal Ordinance (Cap 354) Waste Disposal (Chemical Waste)(General)
Regulation (Cap 354) Land (Miscellaneous Provisions) Ordinance (Cap
28) Public Health and Municipal Services Ordinance
(Cap 132) – Public Cleansing and Prevention of Nuisances (Urban Council) and
(Regional Council) By-laws ETWBTC(W) No 15/2003 – Waste Management on
Construction Site |
|
6.6.7 |
To facilitate adoption
of the best-practice philosophy, training shall be provided to all personnel
working on site. The training shall promote the concept of general site
cleanliness and clearly explain the appropriate waste management procedures
defined in the WMP. Overall, the training should encourage all workers to
reduce, reuse and recycle wastes.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
|
ü |
|
Waste Disposal Ordinance (Cap 354) Waste Disposal (Chemical Waste)(General)
Regulation (Cap 354) Land (Miscellaneous Provisions) Ordinance (Cap
28) Public Health and Municipal Services Ordinance
(Cap 132) – Public Cleansing and Prevention of Nuisances (Urban Council) and
(Regional Council) By-laws |
|
6.6.8 |
During construction,
the WMP should be kept up-to-date on a monthly basis with records of the
actual quantities of wastes generated, recycled and disposed of off-site.
Quantities shall be determined by weighing each load or other methods agreed
to by the Engineer’s Representative.
Waste shall only be disposed of at licensed sites and the WMP should
include procedures to ensure that illegal disposal of wastes does not occur.
Only waste haulers authorized to collect the specific category of waste
concerned should be employed and a trip ticket system shall be implemented
for offsite disposal of C&D and solid waste at public filling facilities
and landfills. Appropriate measures should be employed to minimize windblown
litter and dust during transportation by either covering trucks or
transporting wastes in enclosed containers.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
|
ü |
|
Waste Disposal Ordinance (Cap 354) Waste Disposal (Chemical Waste)(General)
Regulation (Cap 354) Land (Miscellaneous Provisions) Ordinance (Cap
28) Public Health and Municipal Services Ordinance
(Cap 132) – Public Cleansing and Prevention of Nuisances (Urban Council) and
(Regional Council) By-laws |
|
6.6.9 |
Work site(s) shall be
arranged and managed to facilitate the proper management of wastes and
materials. The WMP shall include plans indicating specific areas designated
for the storage of particular types of waste, reusable and recyclable
materials as well as areas and management proposals for any stockpiling
areas. Waste storage areas should be well maintained and cleaned regularly.
Specific provisions for different types of material are outlined below. In general,
these areas should be designed to avoid cross contamination of materials as
well as pollution of the surrounding environment.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
ü |
ü |
|
Waste Disposal Ordinance (Cap 354) Waste Disposal (Chemical Waste)(General)
Regulation (Cap 354) Land (Miscellaneous Provisions) Ordinance (Cap
28) Public Health and Municipal Services Ordinance
(Cap 132) – Public Cleansing and Prevention of Nuisances (Urban Council) and
(Regional Council) By-laws |
|
6.6.10 |
Construction and Demolition Materials
The design of formwork
should maximise the use of standard wooden panels so that high reuse levels
can be achieved. Alternatives such as
steel formwork or plastic facing should be considered to increase the
potential for reuse. |
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
ü ü |
ü ü |
|
Waste Disposal Ordinance (Cap 354) Waste Disposal (Chemical Waste)(General)
Regulation (Cap 354) Land (Miscellaneous Provisions) Ordinance (Cap
28) Public Health and Municipal Services Ordinance
(Cap 132) – Public Cleansing and Prevention of Nuisances (Urban Council) and
(Regional Council) By-laws |
|
6.6.11 |
C&D materials
should be segregated on site into different waste and material types to
increase the feasibility of certain components of the waste stream being
recycled by specialised contractors.
Where materials cannot
be reused on site, opportunities for recycling materials off-site shall be
explored.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
ü |
ü ü |
|
Waste Disposal Ordinance (Cap 354) Waste Disposal (Chemical Waste)(General)
Regulation (Cap 354) Land (Miscellaneous Provisions) Ordinance (Cap
28) Public Health and Municipal Services Ordinance
(Cap 132) – Public Cleansing and Prevention of Nuisances (Urban Council) and
(Regional Council) By-laws |
|
6.6.12 |
Potential opportunities
for recycling and reuse of C&D materials from the Project include:
·
Milling wastes arising from
regrading of the existing pavement could be recycled on site and reused as
either road-base in the new carriageways or fill for new embankments;
·
Existing marginal roadside barriers comprise pre-cast units, it may be
possible to re-use these following widening works; and
·
Existing bridge parapets comprise aluminium post
and railings, these have a recyclable value and could be sold on for
reconditioning or reused for scrap metal.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
ü |
ü |
|
Waste Disposal Ordinance (Cap 354) Waste Disposal (Chemical Waste)(General)
Regulation (Cap 354) Land (Miscellaneous Provisions) Ordinance (Cap
28) Public Health and Municipal Services Ordinance
(Cap 132) – Public Cleansing and Prevention of Nuisances (Urban Council) and
(Regional Council) By-laws |
|
6.6.13 |
Any stockpile should be
sited away from existing watercourses and suitably covered to prevent wind
erosion and impacts on air and water quality.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
ü |
ü |
|
Waste Disposal Ordinance (Cap 354) Waste Disposal (Chemical Waste)(General)
Regulation (Cap 354) Land (Miscellaneous Provisions) Ordinance (Cap
28) Public Health and Municipal Services Ordinance
(Cap 132) – Public Cleansing and Prevention of Nuisances (Urban Council) and
(Regional Council) By-laws |
|
6.6.14 |
Chemical Waste
Chemical waste should
be handled in accordance with the Code of Practice on the Packaging,
Handling and Storage of Chemical Wastes as follows. 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 450L unless the specifications have been
approved by the EPD; and
·
display a label in English and Chinese in
accordance with instructions prescribed in Schedule 2 of the Regulations.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
|
ü |
|
Waste Disposal Ordinance (Cap 354) Waste Disposal (Chemical Waste)(General)
Regulation (Cap 354) Land (Miscellaneous Provisions) Ordinance (Cap
28) Public Health and Municipal Services Ordinance
(Cap 132) – Public Cleansing and Prevention of Nuisances (Urban Council) and
(Regional Council) By-laws |
|
6.6.15 |
The storage area for
chemical wastes should:
·
be clearly labelled and used solely for the storage of chemical waste;
·
be enclosed on at least 3 sides;
·
have an impermeable floor and bunding, of capacity
to accommodate 110% of the volume of the largest container or 20% by volume
of the chemical waste stored in that area, whichever is the greatest;
·
have adequate ventilation
·
be covered to prevent rainfall entering (water
collected within the bund must be tested and disposed as chemical waste if
necessary); and
·
be arranged so that incompatible materials are
adequately separated.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
|
ü |
|
Waste Disposal Ordinance (Cap 354) Waste Disposal (Chemical Waste)(General)
Regulation (Cap 354) Land (Miscellaneous Provisions) Ordinance (Cap
28) Public Health and Municipal Services Ordinance
(Cap 132) – Public Cleansing and Prevention of Nuisances (Urban Council) and
(Regional Council) By-laws |
|
6.6.16 |
The Contractor shall register
with EPD as a Chemical Waste Producer. Waste oils and other chemical wastes
as defined in the Waste Disposal (Chemical Waste) (General) Regulation will
require disposal by appropriate means and could require pre-notification to
EPD prior to disposal. Appropriate means include disposal:
·
be via a licensed waste collector; and
·
be to a facility licensed to receive chemical
waste, such as the Chemical Waste Treatment Facility which also offers a
chemical waste collection service and can supply the necessary storage containers; or
·
to a reuser of the waste, under approval from EPD.
The Centre for Environmental Technology operates a Waste Exchange Scheme,
which can assist in finding receivers or buyers.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
ü |
ü |
|
Waste Disposal Ordinance (Cap 354) Waste Disposal (Chemical Waste)(General)
Regulation (Cap 354) Land (Miscellaneous Provisions) Ordinance (Cap
28) Public Health and Municipal Services Ordinance
(Cap 132) – Public Cleansing and Prevention of Nuisances (Urban Council) and
(Regional Council) By-laws |
|
6.6.17 |
General refuse
generated on-site should be stored in enclosed bins or compaction units
separate 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 or every second
day basis to minimize odour, pest and litter impacts. The burning of refuse
on construction sites is prohibited by law. |
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
|
ü |
|
Waste Disposal Ordinance (Cap 354) Waste Disposal (Chemical Waste)(General)
Regulation (Cap 354) Land (Miscellaneous Provisions) Ordinance (Cap
28) Public Health and Municipal Services Ordinance (Cap
132) – Public Cleansing and Prevention of Nuisances (Urban Council) and
(Regional Council) By-laws |
|
6.6.18 |
General refuse is
generated largely by food service activities on site, so reusable rather than
disposable dishware should be used if feasible. Aluminum cans are often
recovered from the waste stream by individual collectors if they are
segregated or easily accessible. Therefore separate, labelled bins for their
deposit should be provided if feasible.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
|
ü |
|
Waste Disposal Ordinance (Cap 354) Waste Disposal (Chemical Waste)(General)
Regulation (Cap 354) Land (Miscellaneous Provisions) Ordinance (Cap
28) Public Health and Municipal Services Ordinance
(Cap 132) – Public Cleansing and Prevention of Nuisances (Urban Council) and
(Regional Council) By-laws |
|
6.6.19 |
Office waste can be
reduced through recycling of paper if volumes are large enough to warrant
collection. Opportunities for participation in a local collection scheme
should be investigated.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
|
ü |
|
Waste Disposal Ordinance (Cap 354) Waste Disposal (Chemical Waste)(General)
Regulation (Cap 354) Land (Miscellaneous Provisions) Ordinance (Cap
28) Public Health and Municipal Services Ordinance
(Cap 132) – Public Cleansing and Prevention of Nuisances (Urban Council) and
(Regional Council) By-laws |
|
Section 7 7.7.1 |
Landfill Gas Hazard
Mitigation Measures
Particular precautions
will be required with respect to any trenching or excavation, and any
creation of confined spaces at, near to or below ground level.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
ü |
ü |
|
Landfill Gas Hazard Assessment Guidance Note
(EPD/TR8/97) |
|
7.7.2 |
Construction
contractors should be made aware that methane and carbon dioxide are always
likely to be present in the soil voids.
There exists outside the
boundary of GDBL localized pocketed of waste which were deposited during the
operation of the landfill. Therefore it is necessary to state in the roadwork
contract that waste materials may be encountered during the excavation work,
and proper handling as well as disposal of the waste may be needed.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
|
ü |
|
Landfill Gas Hazard Assessment Guidance Note
(EPD/TR8/97) |
|
7.7.3 |
In all construction
work adjacent to GDBL, safety precautions should be implemented to minimize
the risks of:
·
Fires and explosions;
·
Asphyxiation of workers; and
·
Toxicity effects.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
|
ü |
|
Landfill Gas Hazard Assessment Guidance Note
(EPD/TR8/97) |
|
7.7.4 |
Precautions should be
clearly laid down and rigidly adhered to with respect to:
·
Trenching and excavation; and
·
Creation of confined spaces at, near to or below
ground level.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
ü |
ü |
|
Landfill Gas Hazard Assessment Guidance Note
(EPD/TR8/97) |
|
7.7.5 |
In addition to normal
site safety procedures, gas detection equipment and appropriate breathing
apparatus should be available and used when entering confined spaces or
trenches deeper than 1m.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
|
ü |
|
Landfill Gas Hazard Assessment Guidance Note
(EPD/TR8/97) |
|
7.7.6 |
A Safety Officer,
trained in the use of gas detection equipment and LFG related hazards should
be present on site throughout the groundwork phase. The Safety Officer should
be provided with an intrinsically safe portable instrument (or instruments)
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
|
ü |
|
Landfill Gas Hazard Assessment Guidance Note
(EPD/TR8/97) |
|
7.7.7 |
The following safety
measures should be implemented during the construction phase of the Project:
a)
All personnel who work on site and all visitors
to the site should be made aware of the possibility of ignition of gas in the
vicinity of the excavations. Safety notices should be posted warning of the
potential hazards.
b) Those staff who work
in, or have responsibility for “at risk” areas, including all excavation
workers, supervisors and engineers working within the CZ, should receive
appropriate training on working in areas susceptible to LFG, fire and
explosion hazards.
c) An excavation procedure
or code of practice to minimize LFG related risk should be devised and
carried out by the contractor.
d) No worker should be
allowed to work alone at any time in or near to any excavation. At least one
other worker should be available to assist with a rescue if needed.
e) Smoking, naked flames
and all other sources of ignition should be prohibited within 15m of any
excavation or ground-level confined space. “No Smoking” and No Naked Flame”
notices should be posted prominently on the construction site and, if
necessary, special areas designated for smoking.
f) Welding, flame-cutting
or other hot works should be confined to open areas at least 15m from any
trench or excavation. Welding, flame cutting or other hot works may only be
carried out in trenches or confined spaces when controlled by a “permit to
work” procedure, properly authorised by the Safety Officer or other
appropriately qualified person.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
|
ü |
|
Landfill Gas Hazard Assessment Guidance Note
(EPD/TR8/97) |
|
7.7.7 |
g) The permit to work
procedure should set down clearly the requirements for continuous monitoring
for methane, carbon dioxide and oxygen throughout the period for which the
hot works are in progress. The procedure should also require the presence of
an appropriately qualified person in attendance outside the “confined area”
who shall be responsible for reviewing the gas measurements as they are made,
and who shall have executive responsibility for suspending the work in the
event of unacceptable or hazardous conditions. Only those workers who are
appropriately trained and fully aware of the potentially hazardous conditions
which may arise should be permitted to carry out hot works in confined areas.
h) Ground level
construction plant should be fitted with vertical exhausts at least 0.6m
above ground level and with spark arrestors.
i) Any electrical
equipment, such as motors and extension cords, should be intrinsically safe.
j) During piping assembly
or construction, all valves/seals should be closed immediately after
installation. As construction progresses, all valves/seals should be closed
as installed to prevent the migration of gases through the pipeline/conduit.
All piping/conducting should be capped at the end of each working day.
k) Mobile
offices, equipment stores, mess rooms etc should be located on an areas which
has been proven to be gas free (by survey with portable gas detectors) and
ongoing monitoring should be carried out
to ensure that these areas remain gas free. The use of permanent gas
detectors may be appropriate in some circumstances where there is a
relatively high risk but for many developments it will be sufficient to have
regular monitoring undertaken manually
by the safety officer. The particular arrangements to be adopted at a
specific site will need to be determined during the risk assessment/design of
protection measures.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
|
ü |
|
Landfill Gas Hazard Assessment Guidance Note
(EPD/TR8/97) |
|
7.7.7 |
l) Alternatively,
such buildings should be raised clear of the ground. If buildings are raised clear of the
ground, a minimum clear separation distance (as measured from the highest
point on the ground surface to the underside of the lowest floor joist)
should be 500mm.
m) During
construction, adequate fire extinguishing equipment, fire-resistant clothing and
breathing apparatus (BA) sets should be made available on site.
n) The
Contractor should formulate a health and safety policy, standards and
instructions for site personnel to follow.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
|
ü |
|
Landfill Gas Hazard Assessment Guidance Note
(EPD/TR8/97) |
7.7.8
|
The following should be
noted for LFG monitoring:
a) Periodically during
groundwork construction, the works area should be monitored for methane,
carbon dioxide and oxygen using appropriately calibrated portable gas
detection equipment.
b) The monitoring
frequency and areas to be monitored should be set down prior to commencement
of groundworks by either the Safety Officer or by an appropriately qualified
person.
c) Routine monitoring
should be carried out in all excavations, manholes and chambers and any other
confined spaces that may have been created by, for example, the temporary
storage of building materials on the site surface.
d) All measurements in
excavations should be made with the monitoring tube located not more than
10mm from the exposed ground surface,
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
|
ü |
|
Landfill Gas Hazard Assessment Guidance Note
(EPD/TR8/97) |
7.7.8
|
e) Monitoring of
excavations should be undertaken as follows:
i.)
For
excavations deeper than 1m, measurements should be made: · At the ground surface
before excavation commences; · Immediately before any
workers enter the excavation; · At the beginning of
each working day for the entire period the excavation remains open; and · Periodically through
the working day whilst workers are in the excavation.
ii.)
For
excavations between 300mm and 1m deep, measurements should be made: · Directly after the
excavation has been completed; and · Periodically whilst the
excavations remains open.
iii.) For
excavations less than 300mm deep, monitoring may be omitted, at the
discretion of the Safety Officer or other appropriately qualified person. |
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
|
ü |
|
Landfill Gas Hazard Assessment Guidance Note
(EPD/TR8/97) |
|
7.7.10 |
Drilling contractor
should provide a Method Statement detailing the procedures to be followed,
which should include:
a) Provision of an
intrinsically safe portable methane gas detector;
b) no smoking to be
allowed within 15m of a borehole;
c) capping of casing at
the end of each working day; and
d)
exhaust and air-intake stacks to be at least 1.5m
above ground level.
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
|
ü |
|
Landfill Gas Hazard Assessment Guidance Note
(EPD/TR8/97) |
|
7.7.12 |
Realignment of or new
utilities routes that are formed as part of the road-widening works are
identified within the CZ. They should be designated as “special routes” and
the utility companies notified accordingly, such that the necessary
precautions can be implemented during maintenance or extension
|
Within the boundaries of all construction sites
as well as transportation routes to designated areas for off-site disposal of
materials / Prior to and during construction activities |
Contractor |
|
ü |
ü |
Landfill Gas Hazard Assessment Guidance Note |
|
|
Any new utility routes
passing through the boundary of the CZ should have a protective impermeable
barrier installed at the boundary of the CZ
|
|
|
|
ü |
ü |
|
|
Section 8 8.11.4 |
Landscape and Visual
Impacts
A total of 375, 243 and
589 trees were scheduled for felling, transplanting and retaining
respectively (refer to Appendix 8-A). The
locations of affected trees/palms are shown in Figure 8-19.
|
Within the Project Site / Design prior to
commencement of site clearance works , during the construction period following the
phased completion of the engineering works. |
Funding and implementation by CEDD Management and
maintenance by HyD, LCSD since day 1 of operation
|
ü |
|
ü |
Allocation of Space for Urban Street Trees (Works
Branch), WBTC No. 25/92; Tree Preservation, ETWBTC 3/2006. |
|
8.11.6 |
The mitigation measures include:
·
retention of 589 trees,
·
transplantation of a total number of 243 trees
·
landscape works including 375 compensatory trees following completion of
the Project. Compensatory planting is provided in the Tree Survey – “CONCEPTUAL PLANTING PLAN” (refer to Appendix 8-B): All transplanting trees and compensatory trees
(i.e. 618 trees) shall be planted within the Project site and properly maintained during
operation of the Project. Any of these trees damaged during operation
of the Project shall be replaced. Details of compensatory planting such as
detailed location and compensatory plant species will be decided at the design
stage. It is
recommended, as stipulated in ETWB TC(W) No.3/2006 Tree
Preservation, that the implementation
of compensatory plant should not be less than 1:1 (i.e. not less than 375
nos. of trees in this project) and the compensatory planting trees should be
at least of “heavy
standard” type.
|
Within the Project Site / Design prior to
commencement of site clearance works , during the construction period following the
phased completion of the engineering works. |
Funding and implementation by CEDD Management
and maintenance by
HyD, LCSD since day 1 of operation
|
ü |
|
ü |
Maintenance of Vegetation and Hard Landscape Features, ETWB TCW
No. 2/2004; Allocation of Space for Urban Street Trees (Works
Branch), WBTC No. 25/92; Tree Preservation, ETWBTC 3/2006. |
|
8.13.1 |
The Conceptual
Landscape Proposals (figures 8-5 to 8-9) indicated, inter alia, those
landscape measures, which are proposed to mitigate significant visual and
landscape effects identified through the assessment process. These measures include:
·
Regarding of cut slopes
|
Whole alignment / Prior to commencement of site
clearance works and construction works |
CEDD
|
ü |
ü |
|
Control of Visual Impact of Slopes (Works
Branch), WBTC No. 25/93; Improvement to the Appearance of Slopes (Works
Branch), WBTC No. 17/2000; Technical Guidelines on Landscape Treatment and
Bio-engineering for Manmade Slopes and Retaining Walls (GEO Publication No.
1/2000); Tree Preservation, ETWBTC 3/2006. |
|
8.13.1 |
·
Revegetation of chunam slopes
|
Whole alignment / During the construction period
following the phased completion of the engineering works. |
Funding and implementation by CEDD Management and maintenance by HyD, LCSD since day
1 of operation |
ü |
ü |
|
Control of Visual Impact of Slopes (Works
Branch), WBTC No. 25/93; Improvement to the Appearance of Slopes (Works
Branch), WBTC No. 17/2000; Technical Guidelines on Landscape Treatment and
Bio-engineering for Manmade Slopes and Retaining Walls (GEO Publication No.
1/2000); Tree Preservation, ETWBTC 3/2006. |
|
|
·
Tree planting
|
Whole alignment / During the construction period
following the phased completion of the engineering works. |
Funding and implementation by CEDD Management and maintenance by HyD, LCSD since day
1 of operation |
ü |
|
ü |
Maintenance of Vegetation and Hard Landscape
Features, ETWB TCW No. 2/2004; Allocation of Space for Urban Street Trees (Works
Branch), WBTC No. 25/92; Tree Preservation, ETWBTC 3/2006. |
|
8.13.1 |
·
Screen walls
|
Whole alignment / Prior to commencement of site
clearance works |
CEDD |
ü |
ü |
|
The Advisory Committee on the Appearance of
Bridges and Associated Structures (ACABAS), ETWBTC 36/2004. |
|
|
·
Feature finishes to structures and floorscape
|
Whole alignment / Prior to commencement of site
clearance works |
CEDD |
ü |
ü |
|
The Advisory Committee on the Appearance of
Bridges and Associated Structures (ACABAS), ETWBTC 36/2004. |
|
|
·
Provision of new recreational/amenity facilities
|
Whole alignment / operation phase |
HyD & LCSD |
|
|
ü |
Maintenance of Vegetation and Hard Landscape
Features, ETWB TCW No. 2/2004 |
|
|
·
Amenity shrub, ground cover and climber planting
|
Whole alignment / Prior to commencement of site
clearance works |
CEDD
|
ü |
ü |
|
Maintenance of Vegetation
and Hard Landscape Features, ETWB TCW No. 2/2004; Allocation of Space for
Urban Street Trees (Works Branch), WBTC No. 25/92. |
|
8.24.1 |
The assessment process
has generated a range of practical landscape proposals, which will
effectively mitigate those significant landscape and visual effects
identified. These mitigation
proposals include:
·
MM1 - The replacement of amenity planting lost as
a consequence of road widening and the remodelling of junctions;
·
MM2 - The re-use of areas beneath the elevated
road deck as 3 public car parks, screened by feature granite block walls and
amenity planting;
·
MM3 - The provision of feature granite block
screen walls and raised planters around car parks and on traffic islands and
meridians;
· MM4 - Reinstatement of
Tsuen Wan Park.
|
Whole alignment / Design prior to commencement of
site clearance works , during the construction period following the
phased completion of the engineering works. |
Funding and implementation by CEDD Management and maintenance by HyD, LCSD since day
1 of operation |
ü |
ü |
ü |
Maintenance of Vegetation and Hard Landscape
Features, ETWB TCW No. 2/2004; Allocation of Space for Urban Street Trees (Works
Branch), WBTC No. 25/92. Tree Preservation, ETWBTC 3/2006. |
|
8.24.1 |
·
MM5 - The provision of a visual/acoustic screen
partically the noise barriers adjacent to the Clague Gardens Estate.
This should be achieved
through the use of innovative form, recessive and muted colours and tones,
and through use of materials. And green plant such as colorful shrubs and
climbers is proposed to plant along part of the overall noise enclosure
structure. The design of the engineering structure thus aims to minimize
visual impact as far as possible and visually integrate as far as possible
into the landscape context.
|
Whole alignment / During construction phase and
operation phase |
Funding and implementation by CEDD Management and maintenance by HyD, LCSD since day
1 of operation |
ü |
ü |
ü |
The Advisory Committee on the Appearance of
Bridges and Associated Structures (ACABAS), ETWBTC 36/2004; Allocation of Space for Urban Street Trees (Works
Branch), WBTC No. 25/92; Visibility of Directional Signs, HyDTC 10/2001; ETWBTC 10/2005 Planting on Footbridges and
Flyovers; Maintenance of Vegetation and Hard Landscape
Features, ETWB TCW No. 2/2004. |
|
8.24.1 |
Design and Construction
of the soft works recommended at MM 1 - 5
i) During the construction
stages, soft landscape measures should be used where appropriate, employing
native plant species as fast as practicable, to restore the green land cover
and enhance the vegetated, urban environment. This includes tree/ shrub
planting and HyDro-seeding in the peripheral site area, footpath side, access
road, park and open spaces. |
Whole alignment / During the construction period |
CEDD |
ü |
ü |
|
EIAO TM Allocation of Space for Urban Street Trees (Works
Branch), WBTC No. 25/92. Tree Preservation, ETWBTC 3/2006. |
|
8.24.1 |
ii)
During the operation stages, the newly planted
trees, shrubs and grassed areas are maintained throughout the establishment
period at the intervals established in the soft works specification,
particularly in respect of the following:
-
Regular grass cutting
for reinstated areas frequently to be established in the soft works
specification;
-
Firming up of trees
after periods of strong winds periods to be established in the soft works
specification;
-
Regular checks for and
eradication of pests, fungal infections etc. frequently to be established in
the soft works specification;
-
Pruning of dead or
broken branches frequently to be established in the soft work specification;
-
Replacement of dead
plants and resending of failed areas of grass as early as possible during the
planting seasons, i.e. between March and September, although the optimum
period is between April and July, to ensure the landscape mitigation measures
fulfil their design intention
-
The management and maintenance authority will
make regular bimonthly inspections of the planted areas during the
establishment period to ensure the intended objectives of the landscape and
visual mitigation measures are achieved.
|
Whole alignment / operational phases |
HyD & LCSD |
|
|
ü |
Tree Preservation, ETWBTC 3/2006; Maintenance of Vegetation and Hard Landscape
Features, ETWB TCW No. 2/2004. |
|
8.24.4 |
All barriers, including
cantilever types, will be based on a single design theme to create a single
family of structures, which will also be integrated with the engineering
structures, avoiding excessive visual clutter along the road. All barriers are noise reflective type and
can, therefore, be clear. The barriers will comprise semi-transparent panels
with a colour tint supported by posts coloured in muted tones reflecting the
local visual environment. |
Whole alignment / Design phase prior to the
finalization of engineering proposals. |
CEDD |
ü |
ü |
|
The Advisory Committee on the Appearance of
Bridges and Associated Structures (ACABAS), ETWBTC 36/2004. |
|
8.24.5 |
In a majority of
locations the barriers will be required along the elevated bridge
structure. At these locations,
planting along the bridge structure will be used to screen the barriers.
Moreover, greening panel has been taken into design consideration for mitigate
the visual impact of noise barriers. All barriers required will be submitted
to ACABAS for comment during the detail design stages |
Whole alignment / Design phase prior to the
finalization of engineering proposals. |
CEDD |
ü |
ü |
|
The Advisory Committee on the Appearance of
Bridges and Associated Structures (ACABAS), ETWBTC 36/2004; Allocation of Space for Urban Street Trees (Works
Branch), WBTC No. 25/92. |
|
8.24.7 |
The funding and
implementation of the proposed mitigation measures will be the responsibility
of the Civil Engineering and Development Department. Once the day 1 operation
started, the relevant departments, such as HyD, LCSD etc. will be the
responsible for the management and maintenance of the proposed mitigation
measures. |
-- |
-- |
|
|
ü |
-- |
|
9.8.29 |
Hazard to Life
· Nevertheless two measures
previously recommended in the EIA for Route 8 (formerly Route 16) warrant
consideration: ·
Introduce the ‘no stopping zones’ on the western
part of Tsuen Wan Rd and on all major roads within the area where the
individual risk levels exceed 1 x 10-9 (see Figure 8.3 in
EIA Report). This measure (if not already implemented) would be particularly
effective on Tuen Mun Rd. · Provide traffic signals to
stop in case of emergency the traffic on western part of Tsuen Wan Rd and
other major roads within the area that could be affected by a chlorine spill
at YKT WTW |
Within Site Boundary/During
construction and operation phases
|
Contractor & HyD
|
ü
|
ü
|
ü
|
-- |
|
9.8.30 |
Similarly,
implementation of the following measures for protection of the Project
construction workers should be considered: · The number of workers
on site during construction stage should not exceed the levels assessed in
this report. · Emergency evacuation
procedures should be formulated and all workers on site should be familiar
with these procedures as well as the route to escape in case of gas release
incident. Relevant Departments, such as WSD and FSD, should be consulted
during the development of Emergency procedures. Diagram showing the escape
routes to a safe place should be posted in the site notice boards and at the
entrance/exit of site. · The emergency
procedures should specify means of providing a rapid and direct warning (e.g.
Siren and Flashing Light) to construction workers in the event of chlorine
gas release in the YKTWTW. · The construction site
officer should establish a communication channel with the YKTWTW operation
personnel during construction stage. In case of any hazardous incidents in
the treatment works, operation personnel of YKTWTW should advise the site
officer to evacuate the construction workers. |
Within Site Boundary/During construction |
Contractor |
|
ü |
|
|
Notes:
* D - Design, C -
Construction, O – Operation
TWR – Tsuen Wan Road