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Contents
Page
4 Noise 1
4.1 Legislation, Standards and Guidelines 1
4.2 Description of the Environment 6
4.3 Construction Noise Impact Assessment 23
4.4 Road Traffic Noise Impact Assessment 37
4.5 Fixed Noise Sources Impact Assessment 56
4.6 Aircraft Noise Impact Assessment 78
4.7 Rail Noise Assessment 79
4.8 Helicopter Noise Assessment 138
4.9 Marine Traffic Noise Assessment 142
4.10 Noise Implications Caused by Elements to be Implemented by SHO and SHD Replanning Works 142
4.11 Conclusion 143
Appendices
Appendix 4.1a Photo of Existing NSR
Appendix 4.1b NSRs and Area Sensitivity Rating Adopted in Fixed Noise and
Rail Noise Assessments
Appendix 4.2 SWL of PME
Appendix 4.3 Locations of Workfronts and Phases of Construction
Appendix 4.4 Detailed PME Inventory
Appendix 4.5 Monthly Unmitigated Noise Contribution
Appendix 4.6 Unmitigated Construction Noise Impacts at Selected NSRs
Appendix 4.7 Unmitigated Construction Noise Impacts at Various
Representative Floor Levels
Appendix 4.8 Sketch of Typical Temporary Noise Barrier/ Enclosure
Appendix 4.9 Monthly Mitigated Noise Contribution
Appendix 4.10 Mitigated Construction Noise Impacts at Selected NSRs
Appendix 4.11 Mitigated Construction Noise Impacts at Various Representative
Floor Levels
Appendix 4.12 Computer Plot of Noise Model
Appendix 4.13 Key Map of Traffic Flow and Traffic Data at 2053
Appendix 4.14a Detailed Road Traffic Noise Level at NAPs (Unmitigated) for
Phase 1
Appendix 4.14b Detailed Road Traffic Noise Level at NAPs (Unmitigated) for
Phase 1 to Phase 2
Appendix 4.14c Detailed Road Traffic Noise Level at NAPs (Unmitigated) for
Phase 1 to Phase 3
Appendix 4.14d Detailed Road Traffic Noise Level at NAPs (Unmitigated) for Full
Occupation
Appendix 4.15a Detailed Road Traffic Noise Levels at NAPs (Mitigated) for Phase
1
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Appendix 4.15b Detailed Road Traffic Noise Levels at NAPs (Mitigated) for Phase
1 to Phase 2
Appendix 4.15c Detailed Road Traffic Noise Level at NAPs (Mitigated) for Phase
1 to Phase 3
Appendix 4.15d Detailed Road Traffic Noise Level at NAPs (Mitigated) for Full
Occupation
Appendix 4.16 Section Drawing for Fixed Noise
Appendix 4.17 Calculation of Cumulative Fixed Noise Impacts
Appendix 4.18 Not Used
Appendix 4.19 Not Used
Appendix 4.20 Not Used
Appendix 4.21 Unmitigated Detailed Rail Noise Calculation
Appendix 4.22 Typical Noise Canopy Sections
Appendix 4.22a Section Drawing for Selected NSRs
Appendix 4.23 Mitigated Detailed Rail Noise Calculation
Appendix 4.24 Not Used
Appendix 4.25 Cumulative Mitigated Rail and Fixed Plant Noise Calculation
Appendix 4.26 Helicopter Noise Assessment Area Determination
Appendix 4.27 Detailed Helicopter Noise Assessment Results
Appendix 4.28 Helicopter Noise Contour
Figures
Figure 4.1 Locations of Key Existing and Planned Noise Sources
Figure 4.1a Base Scheme of the Project
Figure 4.1b Modified Scheme for the Project
Figure 4.1c Proposed Canopy for the Project
Figure 4.2a NEF Contours (Year 2011)
Figure 4.2b NEF Contours (Year 2021)
Figure 4.2c NEF Contours (Year 2030)
Figure 4.2d NEF Contours (Year 2032)
Figure 4.3 Locations of Representative Existing and Planned NSRs
Figure 4.3f Locations of Prevailing Background Noise Measurement
Figure 4.4 Locations of Representative Noise Assessment Points
(Construction Noise)
Figure 4.5 Locations of Representative Noise Assessment Points (Road
Traffic Noise)
Figure 4.6 Overall Mitigation Measures for Road Traffic Noise and Rail
Noise
Figure 4.6e Noise Mitigation Measures for Rail Noise from Existing SHD
Operation
Figure 4.7 Locations of Representative Noise Assessment Points (Fixed
Noise)
Figure 4.7b Location of Planned and Existing Fixed Noise Sources and NSRs
Figure 4.8 Locations of Representative Noise Assessment Points (Aircraft
Noise)
Figure 4.9 Locations of Representative Noise Assessment Points (Rail Noise)
Figure 4.10 Locations of Representative Noise Assessment Points (Helicopter
Noise)
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4 Noise
4.1 Legislation, Standards and Guidelines
4.1.1 General
4.1.1.1 The relevant legislation and associated guidance applicable to present
the study for the assessment of noise impacts include:
Noise Control Ordinance (NCO) (Cap.400);
Technical Memoranda (TM) on Noise from Construction Work
other than Percussive Piling (GW -TM);
TM on Noise from Percussive Piling (PP-TM);
TM on Noise from Places other than Domestic Premises, Public
Places or Construction Sites (IND-TM); and
Environmental Impact Assessment Ordinance (EIAO) (Cap. 499)
and EIAO-TM.
4.1.2 Construction Noise
Construction Noise During Normal Hours
4.1.2.1 The NCO provides the statutory framework for noise control in Hong
Kong. Assessment procedures and standards are set out in the respective
TM promulgated under NCO.
4.1.2.2 To ensure a better environment, the EIAO-TM promulgated under the
EIAO has imposed more stringent criteria. For construction, there is no
statutory limit on daytime construction noise under the NCO and related
TMs. Nevertheless, the EIAO-TM stipulates criteria of 65 - 75dB(A)
for daytime construction activities, as shown in Table 4.1.
Table 4.1 Noise standards for construction activities
Uses
Noise Standards[1], Leq (30mins) dB(A)
0700 to 1900 hours
on any day not being a Sunday or
general holiday
All domestic premises including
temporary housing accommodation
75
Educational institutions including
kindergartens, nurseries and all
others where unaided voice
communication is required
70
65 (During examinations)
Note:
[1] The above standards apply to uses that rely on opened windows for ventilation.
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4.1.2.3 In addition, reference has been made to EIAO Guidance Note No.
09/2010 on “Preparation of Construction Noise Impact Assessment
under the Environmental Impact Assessment Ordinance”.
Construction Noise During Restricted Hours
4.1.2.4 The NCO also provides statutory control on general construction works
during restricted hours (i.e. 1900 to 0700 hours (of the next day) from
Monday to Saturday and at any time on Sundays or public holidays).
The use of Powered Mechanical Equipment (PME) for construction
works during restricted hours would require a Construction Noise
Permit (CNP). The GW-TM details the procedures adopted by EPD for
assessing such application. The granting of a CNP is subject to
conditions stated in the CNP and it may be revoked at any time for
failure to comply with the permit conditions.
4.1.2.5 Maximum noise levels from construction activities during restricted
hours at affected Noise Sensitive Receivers (NSRs) are controlled under
the TMs and shall not exceed the specified Acceptable Noise Levels
(ANLs). These ANLs are stipulated in accordance with the Area
Sensitivity Ratings established for the NSRs. The ANLs for
construction works are summarised in Table 4.2.
Table 4.2 ANLs for construction during restricted hours
Time Period
ANLs for Area Sensitive
Ratings[1], dB(A)
A B C
All weekdays during the evening (1900 to 2300
hours), and general holidays (including Sundays)
during the day and evening (0700 to 2300 hours)
60 65 70
All days during the night-time (2300 to 0700 hours) 45 50 55
4.1.2.6 As defined in the Noise Control Designated Area Plan No.
EPD/NP/NT-06, Siu Ho Wan Depot are not within the Designated Area.
Therefore, the Project does not fall within the control of TM on Noise
on Construction Work in Designated Areas (DA-TM).
4.1.2.7 Despite any description made in EIA report, there is no guarantee that
a CNP will be issued for the project construction. The Noise Control
Authority will consider a well-justified CNP application, once filed, for
construction works within restricted hours as guided by the relevant
TMs issued under the NCO. The Noise Control Authority will take into
account contemporary conditions / situations of adjoining land uses and
any previous complaints against construction activities at the site before
making a decision in granting a CNP. Nothing in the report shall bind
the Noise Control Authority in making a decision. If a CNP is to be
issued, the Noise Control Authority shall include in it any conditions
demand. Failure to comply with any such conditions will lead to
cancellation of the CNP and prosecution under the NCO.
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Percussive Piling
4.1.2.8 Under the PP-TM, CNPs are also required for percussive piling
involving the use of diesel, pneumatic and / or steam hammer. This TM
specifies the permitted hours and other conditions for percussive piling.
Table 4.3 lists the acceptable percussive piling noise levels for various
types of NSR.
Table 4.3 ANLs for percussive piling
NSR Window Type or Means of Ventilation ANL, dB(A)
(i) NSR (or part of NSR) with no window or other opening 100
(ii) NSR with central air conditioning system. 90
(iii) NSR with windows or other openings but without
central air conditioning system
85
4.1.2.9 Depending on the numbers and types of piling machines and the
separation from NSRs, percussive piling may be restricted to 12, 5 or 3
hours per day. For NSRs that are particularly sensitive to noise, such as
hospitals, medical clinics, educational institutions and courts of law, a
further reduction of 10dB(A) shall be applied to the above ANLs.
4.1.3 Operational Noise
4.1.3.1 The EIAO-TM (Annex 5 of TM) has stipulated the noise standards for
various noise sources as shown in Table 4.4. It should, however, be
noted that the following noise criteria are only applicable to uses that
rely on opened windows for ventilation.
Table 4.4 Noise standards for operational phase
Common Uses
Noise Standards[1]
Aircraft Noise
(Noise
Exposure
Forecast:
NEF)
Helicopter
Noise
Lmax dB(A)
0700-1900
hours
Road
Traffic
Noise
L10 (1hour)
dB(A)
Rail
Noise[2]
Fixed Noise
Sources
All domestic
premises including
temporary housing
accommodation
25 85 70 (a) The
appropriate
ANLs shown
in Table 2 of
the Technical
Memorandum
for the
Assessment of
Noise from
Places Other
than Domestic
Premises,
Public Places
or
Construction
Sites and
(a) 5dB(A)
below the
appropriate
ANLs shown in
Table 2 of the
Technical
Memorandum
for the
Assessment of
Noise from
Places Other
than Domestic
Premises, Public
Places or
Construction
Sites, or
Offices 30 90 70
Educational
institutions
including
kindergartens,
nurseries and all
others where
unaided voice
communication is
required
25 85 65
Hospitals, clinics,
convalescences
25 85 55
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Common Uses
Noise Standards[1]
Aircraft Noise
(Noise
Exposure
Forecast:
NEF)
Helicopter
Noise
Lmax dB(A)
0700-1900
hours
Road
Traffic
Noise
L10 (1hour)
dB(A)
Rail
Noise[2]
Fixed Noise
Sources
and homes for the
aged, diagnostic
rooms, wards
(b) Lmax (2300-
0700 hours)
= 85dB(A)
(b) the
prevailing
background
noise levels (For
quiet areas with
level 5 dB(A)
below the ANL)
Notes:
[1] The above standards apply to uses that rely on opened windows for ventilation.
[2] The above standards should be viewed as the maximum permissible noise levels assessed at 1m
from the external facade.
Road Traffic Noise
4.1.3.2 The criteria for assessing road traffic noise is given in the EIAO-TM
and tabulated in Table 4.4. For domestic premises and offices, the
criterion is 70dB(A). For educational institutes and places of worship,
the criterion is 65dB(A). For hospitals, clinics etc, a more stringent
criterion of 55dB(A) is stipulated. It should be noted that all these
criteria only apply to NSRs that rely on opened windows for ventilation.
In addition, reference has been made on EIAO Guidance Note No.
12/2010 on “Road Traffic Noise Impact under the Environmental
Impact Assessment Ordinance”.
Fixed Noise Sources
4.1.3.3 Operational noise from fixed noise sources is controlled under the
NCO’s TM on IND-TM. To plan for a better environment, the EIAO-
TM has specified the following requirements for the planned fixed
noise sources, whichever is more stringent.
5dB(A) below the appropriate ANLs in the IND-TM; or
the prevailing background noise levels.
4.1.3.4 The ANLs for different Area Sensitivity Ratings during different
periods are summarised in Table 4.5.
4.1.3.5 Besides, ANL stipulated in the IND-TM has been adopted in the
evaluation of potential cumulative fixed noise impact assessment from
existing and planned fixed noise sources. This approach has been
adopted in approved EIA reports for Tung Chung New Town Extension
(TCNTE) (AEIAR-196/2016), Expansion of Hong Kong International
Airport to a Three-way System (AEIAR-185/2014) and Lamma Power
Station Units L4 & L5 Flue Gas Desulphurization Plan Retrofit Project
(AEIAR-098/2006).
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Table 4.5 ANLs for fixed noise sources
Time Period
ANL, dB(A)
Area
Sensitivity
Rating A
Area
Sensitivity
Rating B
Area
Sensitivity
Rating C
Day (0700 to 1900 hours) 60 65 70
Evening (1900 to 2300 hours) 60 65 70
Night (2300 to 0700 hours) 50 55 60
4.1.3.6 For assessing fixed noise sources, the Area Sensitivity Ratings at the
NSRs are defined in accordance with the relevant TMs. More details
are discussed in Section 4.5.2. Similar to the road traffic noise, all these
criteria only apply to NSRs relying on opened windows for ventilation.
Aircraft Noise
4.1.3.7 The noise criterion for aircraft noise is given in Table 4.4. For aircraft
noise, NSRs should be planned beyond the NEF25 contour, except for
offices which should be beyond the NEF30 contour. Similar to the road
traffic noise, all these criteria only apply to NSRs relying on opened
windows for ventilation.
Rail Noise
4.1.3.8 The noise criterion for assessing rail noise is given in Table 4.4. In
addition, noise level during the period between 11:00pm and 7:00am of
the following day should not exceed Lmax 85dB(A). Similar to road
traffic noise assessment, all these criteria only apply to NSRs relying
on opened windows for ventilation.
Helicopter Noise
4.1.3.9 As shown in Table 4.4, for helicopter noise between 0700 – 1900,
NSRs should be planned beyond having the noise impacts less than Lmax
85dB(A), except for offices which should be exposed to noise impacts
not exceeding Lmax 90dB(A). Similar to the road traffic noise, all these
criteria only apply to NSRs relying on opened windows for ventilation.
4.1.3.10 For the area in SHD in particular, the helicopters operated by both
Government Flying Services (GFS) and commercial company would be
using the airspace in the vicinity. GFS has a headquarters within the
Hong Kong International Airport (HKIA) and its helicopters serve both
routine and emergency services. According to the approved EIA report
for TCNTE (AEIAR-196/2016), all the routine services (including
flying support for all bureau and departments) would be conducted
during daytime period only while emergency services (including air
ambulance, search & rescue (SAR), supporting law enforcement
agencies, firefighting) have to be conducted on an as-required basis to
suit actual circumstances.
4.1.3.11 As discussed above, there would be helicopter events along Siu Ho Wan
Depot for both evening and night-time periods. Since there is no
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relevant noise criteria in the EIAO-TM for both evening and night-time
periods, reference has been made to the approved EIA report for A
Rooftop Helipad at the Proposed New Block of Queen Mary Hospital
(AEIAR-208/2017). According to their findings, there is no statutory
noise criterion for emergency services (including air ambulance, search
& rescue (SAR), supporting law enforcement agencies, firefighting)
during evening and night-time periods. The emergency services are
generally exempted from the flight restrictions.
Marine Traffic Noise
4.1.3.12 There is no statutory requirement for marine traffic noise. The
construction of the Project would not involve any marine works and
hence construction vessels are not anticipated. Besides, there are neither
existing nor planned marine routes within the 300m assessment area.
Hence, marine traffic noise impacts are not anticipated during both
construction and operational phases.
4.2 Description of the Environment
4.2.1 Existing Environment
4.2.1.1 As discussed in Section 1, the proposed development for
comprehensive residential and commercial development is located on
the existing SHD (Figure 1.1). The existing noise climate is dominated
by the road traffic from North Lantau Highway (NLH), railways of
Tung Chung Line (TCL) and Airport Express Line (AEL), aircraft
approaching and departing from Hong Kong International Airport
(HKIA), helicopter transiting and the operation of SHD with some
minor fixed noise operations, such as SHW Government Maintenance
Depot and New Lantao Bus Company Siu Ho Wan Depot, located at
southeast to the proposed development.
4.2.2 Noise Abatement Strategy
4.2.2.1 As discussed in Section 2, the proposed development consists of
approximately 108 blocks of residential premises, three schools,
commercial uses, car parks, club houses, sports centre, Public Transport
Interchange (PTI) and kindergarten, etc.. As far as the residential blocks
are concerned, the Base Scheme that was considered during the early
design development (see Figure 4.1a) has been progressively refined
and eventually evolved as the Modified Scheme (see Figure 4.1b) to
abate various environmental constraints and avoid and minimize
environmental impacts as much as practicable. Those abatement
measures are summarised below:
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Adoption of self-protecting blocks with no noise sensitive façades
directly facing NLH (about 30m to the south), TM-CLK Link slip
road (about 40m to the south), Lantau Airport Railway (LAR)
(about 20m to the south) and the railway tracks at both ends of the
depot. These blocks are also designed in a curvative arrangement
to address visual impact issues;
Provision of podium up to +26.5mPD to mitigate the noise impacts;
Adjustment of building disposition coupled with provision of
acoustic windows at strategic locations to mitigate the noise
impacts;
Provision of sections of noise canopy along the podium edge at
+23mPD; and
Adoption of modified building blocks at strategic locations to
minimize noise impacts.
4.2.2.2 As discussed in Section 2.4.3, the option of constructing noise
barriers/enclosures at existing roads and LAR has been explored. For
abating road traffic noise, it should be noted that both TCL / AEL are
aligned between the southern site boundary and NLH with a separation
of approximately 30m. If NLH is to be installed with direct noise
mitigation measures, over 2km noise barrier/enclosure at NLH, coupled
with retrofitted installation at the viaducts of TM-CLK Link and Tai Ho
Interchange after structural strengthening, is required to shield the
significant traffic noise. Given that NLH and TM-CLK Link are the
only external road links for Lantau/HKIA, extensive construction
works required would cause unacceptable disturbance to the traffic on
those strategic highway. Hence, the approach of providing mitigation at
source is therefore not further considered.
4.2.2.3 The option of installing a large cantilevered noise barrier extending
from the podium of southern site boundary fronting NLH has also been
considered. However, given the large separation of 30m between the
southern boundary and NLH, the effectiveness of noise barriers along
the southern site boundary to alleviate road traffic noise will not be
effective and hence is not further considered.
4.2.2.4 The option to enclose the some 2km of the LAR is also found to be
technically not feasible. During the planning and preliminary design
stage of SHO and SHD Replanning Works, the provision of noise
enclosure on TCL/AEL tracks was reviewed. Review findings indicate
only limited clearance at the either side of TCL/AEL tracks with
existing depot facilities to the north, NLH and Tuen Mun Chek Lap Kok
Link Road on the south. Such site constraints greatly reduce the
constructability of noise enclosure on TCL/AEL tracks due to potential
disturbance to existing SHD operation and also road traffic network of
which temporary road closure required for supporting the construction.
In addition, due to proximity of running tracks, the stringent railway
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protection measures for running tracks restricts the allowable working
hour for the enclosure construction to less than 2 hours each night,
leading to prolonged construction period of the noise enclosure which
may affect other maintenance activities. Building structures close to
high speed rail with speed about 130kph also introduce high suction
force on objects in the vicinity, together with the prolonged construction
period, construction of noise enclosure on TCL/AEL tracks create
undesirable high risk affecting the normal service of TCL/AEL. It is
therefore concluded that based on current design and operational
information, the provision of noise enclosure on TCL/AEL tracks is not
a practical and feasible mitigation proposal. In view of these, alternative
noise mitigation measures with efficient and practicable construction
method have been explored to be provided at the above ground
structures of SHD Topside Development for protecting the future
residents.
4.2.2.5 On the adoption of self-protecting building design for the first row of
residential blocks fronting NLH, it should be noted that NLH is a dual-
3 express highway with a speed limit of 110 km/hour and high traffic
volume. According to 2015 traffic census, this section of NLH had an
Annual Average Daily Traffic (AADT) of 68,930, and a peak traffic
flow of up to 4,200 veh / hr. It is also noted that the night-time traffic
flow is also as high as 3,100 veh /hr. Besides, it is predicted that the
peak traffic flow in Year 2053 (15 years after completion of the Project)
will be up to about 14,000 vehicle/hour (two-way). It is also aligned at
about 30m from the southern site boundary with the LAR in between.
The road traffic noise levels at the southern façade of the Project
directly facing NLH is therefore would be up to 84dB(A) (L10) during
peak hours. Such a high noise level could not be effectively mitigated
by implementing typical building design such as acoustic windows,
reduced view angles etc.
4.2.2.6 In view of these, the use of self-protecting buildings fronting NLH is
considered as the most practicable approach under the capacity
development scheme formulated for this feasibility study. The use of
non-sensitive uses to act as screening has also been duly considered.
However, given the prime objective of the topside development is to
provide as much housing as practicable to address issues on housing
supply, the current design is to accommodate non-residential uses
within the podium deck and residential blocks atop the podium. This
being said, the use of self-protecting buildings could be further
reviewed at the project implementation stage. Discussions on the
consideration of layout options are also detailed in Section 2.
4.2.2.7 The Base Scheme accommodates 52 numbers of Type A building
blocks and 56 numbers of Type B building blocks (Figure 4.1a). To
minimise the road traffic and rail noise impacts, a Modified Type B
building layout is proposed. The main difference between Type B
building blocks and Modified Type B building blocks is that Modified
Type B building blocks would have some of the noise sensitive
windows specially designed to reduce the view angle overlooking onto
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NLH / TM-CLK Link and TCL / AEL, and hence the associated road
traffic noise and rail noise impacts respectively. The Modified Scheme
(Figure 4.1b) would replace some of the Type B building blocks by
Modified Type B building blocks at some locations
4.2.2.8 The following sections summarise the noise issues that have been
addressed by the Modified Scheme in terms of road traffic noise and
rail noise.
Road Traffic Noise
4.2.2.9 As discussed above, at source mitigation measures for road traffic noise
is not further considered. Hence, a road traffic noise assessment has
been conducted for the Base Scheme for different phases, including
Phase 1 at Year 2026, Phase 2 at Year 2030, Phase 3 at Year 2034 and
Phase 4 at Year 2038.
4.2.2.10 Phase 1 (Year 2027) - Result indicates that most of the planned NSRs
would comply with the 70dB(A) noise criterion except at blocks 103,
104, 110, 111, 113, 114, 116, 117, 136, 139, 140, 143, 146 and 147 with
Type B building blocks. The predicted noise levels would be 75dB(A)
for the 1st to 10th floors, up to 74dB(A) for 11th or above floors, etc.,
exceeding the noise criterion of 70dB(A) by up to 5dB(A). This is
attributable to the fact that those NSRs are affected by the NLH via the
openings between the building clusters. As at source noise mitigation
measures would not be further considered, it is recommended to adopt
acoustic windows at the affected facades of these blocks to reduce road
traffic noise impacts. Acoustic windows can generally provide a
notional noise reduction of about 5dB(A) (Note: the noise reduction of
acoustics windows would possibly be higher subject to detailed design),
and hence would be sufficient to abate the traffic noise impact at these
receivers.
4.2.2.11 For block 149 at the eastern site boundary of Phase 1c, the predicted
noise levels before Phase 4 development would be 76dB(A) for the 1st
to 15th floors, up to 75dB(A) for the 16th or above floors, etc., also
exceeding the noise criterion of 70dB(A) by up to 6dB(A). Since
acoustic windows can generally provide a notional noise reduction of
about 5dB(A), the use of acoustic windows would not be sufficient to
abate the noise impacts. It is therefore recommended to adopt the
Modified Type B building blocks which could be designed to achieve a
higher noise reduction.
4.2.2.12 Phase 1 to Phase 2 (Year 2030) – As the setting of Phase 2 development
(Type A building blocks) will be protected by self-protecting blocks for
the first row of residential blocks from Phase 1 (i.e. Type B building
blocks fronting NLH), all the planned NSRs in this phase would comply
with the 70dB(A) noise criterion.
4.2.2.13 Phase 1 to Phase 3 (Year 2034) – Similar to Phase 2 development, with
the self-protecting blocks from Phase 1 fronting NLH, all the planned
NSRs in this phase would comply with the 70dB(A) noise criterion.
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4.2.2.14 Phase 1 to Phase 4 (Year 2038) – Result indicates that most of the
planned NSRs would comply with the 70dB(A) noise criterion except
at blocks 401, 403, 404, 407, 408, 409, 420, 421 and 422. For blocks
404, 408, 409, 420, 421 and 422, the predicted noise levels would be up
to 72dB(A) for the 1st to 10th floors, up to 74dB(A) for the 11th or above
floors, etc. For blocks 401, 403 and 407, the predicted noise levels
would be up to 77dB(A) for the 1st to 10th floors, up to 76dB(A) for the
11th or above floors, etc.. This is attributable to the fact that those NSRs
are affected by the NLH via the openings between the building clusters.
Since acoustic windows can generally provide a notional noise
reduction of about 5dB(A), it is recommended that those blocks (i.e.
blocks 404, 408, 409, 420, 421 and 422) with exceedance up to 5dB(A)
will be provided with acoustic windows at the affected facades. For
blocks 401, 403 and 407 with exceedance more than 5dB(A), Modified
Type B building blocks would be adopted instead.
4.2.2.15 Hence, for addressing road traffic noise, Modified Type B building
blocks are proposed for blocks 149, 401, 403 and 407 as illustrated in
Figure 4.1b.
Rail Noise
4.2.2.16 Rail noise impact assessment has also been conducted for the Base
Scheme, but with the proposed Modified Type B for building blocks
149, 401, 403 and 407 incorporated to address road traffic noise.
4.2.2.17 Phase 1 (Year 2027) - Result indicates that most of the planned NSRs
would comply with the noise criteria (i.e. daytime and evening criterion
of 70dB(A) and night-time of 60dB(A) for Area Sensitivity Rating C)
except for blocks 103, 104, 110, 111, 113, 114, 116, 117, 118, 122, 123,
133, 136, 139, 140, 146 and 147. The predicted noise levels would be
up to 70dB(A) for the 1st to 10th floors, up to 69dB(A) for the 11th or
above floors, etc., also exceeding the night-time noise criteria by up to
1 – 10dB(A). This is attributable to the fact that those NSRs are affected
by the AEL / TCL via the openings between the building clusters.
4.2.2.18 Unlike the case for road traffic noise, the TCL / AEL are located much
closer to the southern site boundary and hence it is more effective to
use canopy at +23 mPD to mitigate rail noise impacts. However, it
should be noted that the extent of the canopy is constrained by a number
of factors including 1) the need for smoke extracting strategy for staged
development of the depot area; 2) the need for smoke extracting strategy
for SHO and PTI located at Phase 1 development; 3) the practicability
of routing smoke exhaust of depot area at about +17.1mPD to above
+23 mPD (i.e. incompatibility with Emergency Vehicular Access
(EVA), safety and technical constraints in erecting exhaust at +23mPD
before podium construction) to provide continuous noise canopy; 4) the
suitability of routing smoke exhaust of depot area above podium at
+26.5mPD (i.e. visual impact, nuisance during routine testing and
safety and technical constraints in erecting exhaust at +26.5mPD before
podium construction). In connection with this, the current proposed
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depot smoke discharge outlets will be arranged to prevent discharge
under cover and that shall be further reviewed during detailed design
stage. Potential concerns on smoke spilling into depot under a train fire
at TCL / AEL main line will also need to be followed up during detailed
design stage with relevant authorities.
4.2.2.19 Throughout the rail noise assessment, the effectiveness of installing a
15m wide canopy along the southern podium edge (Figure 4.1c) has
been considered. Result however indicates that, even with the at source
mitigation measures of 15m wide canopy, the predicted rail noise levels
would still exceed the noise criterion by 2 – 3dB(A) at blocks 117, 118,
139 and 140. This is attributable to the fact that Phase 1c development
is not constructed at that time and hence it is not possible to extend the
length of the noise canopy beyond the podium of Phase 1a and some
sections of 15m wide noise canopy cannot shield the TCL / AEL as the
alignment of TCL / AEL does not run parallel along southern podium
edge. Hence, it is necessary to consider adopting the Modified Type B
building blocks at those locations. Therefore, additional numbers of
Modified Type B building blocks are proposed for blocks 117, 139 and
140 to reduce the rail noise impacts as illustrated in Figure 4.1b. For
block 118 at the eastern boundary of Phase 1a development, the
provision of canopy at Phase 1a alone is not sufficient to protect these
NSRs before provision of Phase 1c noise canopy, Modified Type B
building block is also recommended.
4.2.2.20 Phase 1 to Phase 2 (Year 2030) – As the setting of Phase 2 development
(Type A building blocks) will be protected by self-protecting blocks for
the first row of residential blocks (Type B building blocks fronting AEL
/ TCL) and noise canopy from Phase 1, all the planned NSRs in this
phase would comply with respective noise criteria.
4.2.2.21 Phase 1 to Phase 3 (Year 2034) – Similar to Phase 2 development, with
the self-protecting blocks fronting AEL / TCL and noise canopy from
Phase 1, all the planned NSRs in this phase would comply with
respective noise criteria.
4.2.2.22 Phase 1 to Phase 4 (Year 2038) - Result indicates that most of the
planned NSRs would comply with the respective noise criteria.
However, for block 404 at which the predicted noise levels would be
up to 66dB(A) for for the 1st to 12th floors, up to 65dB(A) for the 13th
or above floors, etc.. Similar to Phase 1 development, two sections of
noise canopy at +23 mPD is recommended along podium of Phase 4
development to address the consideration of smoke extracting strategy.
Result however indicates that, even with the at source mitigation
measures of 15m wide canopy, the predicted rail noise levels would still
exceed the noise criterion by 5dB(A). This is attributable to the fact
some sections of 15m wide noise canopy cannot shield the TCL / AEL
as the alignment of TCL / AEL does not run parallel along southern
podium edge. Hence, it is necessary to consider adopting the Modified
Type B building block at block 404 to reduce the rail noise impacts.
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4.2.2.23 Hence, for addressing rail noise, Modified Type B building blocks are
proposed for blocks 117, 118, 139, 140 and 404 as illustrated in Figure
4.1b. Other than these blocks, there are some blocks that would be
exposed to 5dB(A) less than the statutory criteria. These blocks include
104, 111, 114, 116, 136 and 146. The current Modified Scheme has
proactively implemented Modified Type B building blocks at these
locations. During the subsequent detailed design stage, the need for
these Modified Type B building blocks would be revisited as
appropriate.
4.2.2.24 To summarise the concerns on road traffic noise and rail noise, the Base
Scheme (Figure 4.1a) has been progressively refined during the design
development to address and alleviate the road traffic noise and rail noise
impacts, and eventually evolved as the Modified Scheme, which would
replace Type B building blocks as Modified Type B building blocks at
blocks 104, 111, 114, 116, 117, 118, 136, 139, 140, 146, 149, 401, 403,
404 and 407 as shown in Figure 4.1b.
4.2.3 Noise Environment for With and Without Project
4.2.3.1 Without the topside development, existing SHD will be left as an open-
air depot facility. Maintenance noise from the operation of the depot
will possibly affect the surrounding. With the topside development in
place, all the noise sources will be enclosed within building structures
or the outdoor units will be installed with silencer or enclosure, etc.
Hence, the noise environment for with project scenario will be properly
controlled.
4.2.4 Existing and Planned Noise Sources
4.2.4.1 The area for noise impact assessment generally includes all those areas
within 300m from the site boundary. Table 4.6 shows the key existing
noise sources and their locations are illustrated in Figure 4.1.
Table 4.6 List of key existing noise sources
Types Noise Sources Reference
Location[1]
Type of Noise
Source
Approximate
Distance
between Site
Boundary, m
Existing
Noise
Sources
SHD ENS01 Rail / Fixed Within site
boundary
TCL and AEL ENS02 Rail 20m
Road Traffic from Existing
NLH
ENS03 Road 30m
SHW Government
Maintenance Depot
ENS04 Fixed 90m
Discovery Bay Tunnel
Administration Building
ENS05 Fixed 110m
New Lantao Bus Company
Siu Ho Wan Depot
ENS06 Fixed 140m
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Types Noise Sources Reference
Location[1]
Type of Noise
Source
Approximate
Distance
between Site
Boundary, m
Helicopter ENS07 Helicopter [2]
Aircraft approaching and
departing HKIA
ENS08 Aircraft [3]
Notes:
[1] Reference source no. is shown in Figure 4.1.
[2] Although the GFS Headquarters is located at 7km away from the proposed development,
helicopter noise due to pass-by is anticipated for the proposed development.
[3] Although HKIA is located at 3.7km away from the proposed development, aircraft noise due to
overflight is anticipated for the proposed development.
4.2.4.2 The nature and operation of these noise sources are described as follows.
Existing Noise Sources
SHD
4.2.4.3 The existing SHD provides essential maintenance and support facilities
for the entire fleet of TCL, AEL and DRL. It will be replanned and
located underneath the proposed SHD Topside Development. While
potential rail and fixed noise impacts from the existing SHD during
depot replanning will be addressed in a separate EIA for Siu Ho Wan
Station and Siu Ho Wan Depot Replanning Works (Railway EIA) to be
submitted separately for approval under EIAO, impacts from fixed
noise and rail noise are therefore included and assessed in this EIA
report.
TCL and AEL
4.2.4.4 TCL and AEL are located at south of SHD (Figure 4.1). According to
MTR Corporation’s website, the existing headway for AEL is 10
minutes during peak hour and 12 minutes during non-peak hour and the
maximum operating speed is about 135km/h. TCL generally runs along
AEL and it terminates at Tung Chung Station. The headway of TCL is
approximately 4 minutes during peak hour and approximately 12
minutes during non-peak hour.
4.2.4.5 For the section to the south of SHD near Pak Mong, both the AEL and
TCL share common tracks which are on ballast and there are no barriers
or other existing screening structures. Since the site is located next to
the tracks, rail noise impacts are therefore addressed in this EIA report.
North Lantau Highway (NLH)
4.2.4.6 Similar to TCL and AEL, NLH is a highway linking HKIA, Lantau
Island and Tsing Ma Bridge, locating at the south of SHD. It has an
Annual Average Daily Traffic (AADT) of 68,930 in Year 2015 and is
an expressway with three lanes in each direction for its entire length.
The speed limit is 110km/h for the section within the assessment area.
Road traffic noise impacts are therefore addressed in this EIA report.
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SHW Government Maintenance Depot
4.2.4.7 SHW Government Maintenance Depot was operated since 2005 and it
contains garage, depot and carparking facilities for the Electrical and
Mechanical Services Department, Architectural Services Department
and Highway department. The depot is fully enclosed with its ingress /
egress located at southwest of the depot. The depot is located at 90m
southeast to the site boundary. During site visit, it was observed that the
maintenance works were carried out within the maintenance depot and
there is no night-time maintenance work as advised by the on-site
property management staff. In addition, as discussed in Section 2, no
noise sensitive use premises in the proposed development will be facing
the SHW Government Maintenance Depot. Hence, adverse fixed noise
impacts are therefore not anticipated.
Discovery Bay Tunnel Administration Building
4.2.4.8 Discovery Bay Tunnel Administration Building is the administration
and toll area for transportation accessing Discovery Bay and with
louvers installed in the building. It is located at 110m southeast to the
proposed development. During site visit, other than the louver, there
was no other noisy fixed plants nor activities identified. As discussed
in Section 2, no noise sensitive use premises in the proposed
development will be facing the Discovery Bay Tunnel Administration
Building. Hence, adverse fixed noise impacts are therefore not
anticipated.
New Lantao Bus Company Siu Ho Wan Depot
4.2.4.9 New Lantao Bus Company Siu Ho Wan Depot includes bus parking
facilities, sunket pit, car washing area, oil refuelling area. It is located
at 140m southeast to the proposed development. During site visit, no
noisy activities were in operation in the outdoor area. There is an indoor
area encroached in the depot, where other maintenance works were
carried out. As discussed in Section 2, no noise sensitive use premises
in the proposed development will be facing the New Lantao Bus
Company Siu Ho Wan Depot. Hence, adverse fixed noise impacts are
therefore not anticipated.
Helicopter
4.2.4.10 GFS and Hong Kong Business Aviation Centre (HKBAC) are located
at the south-western of the HKIA. GFS accommodates a total of seven
helicopters (Super Puma AS332 L2 and EC 155 B1) which are mainly
used for search and rescue (SAR), air ambulance, tactical police support,
lifting loads and internal cargo, airborne monitoring, the carriage of
government passengers. In addition, the existing helicopters will be
replaced by a fleet of new helicopters, Airbus Helicopter H175.
Deliveries will begin towards end 2017 with the first batch of three
helicopters, followed by the remaining four in 2018.
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4.2.4.11 There is a feasibility study by CEDD to relocating part of GFS
emergency flying services to a forward base within the central part of
Hong Kong, such that the flight path along North Lantau Expressway
(NLE) Route during emergency could be released, and hence helicopter
noise impact to the potential development along NLE could be
eliminated. Since the relocation is still under planning stage, it is not
included as an assumption in this EIA.
4.2.4.12 According to the approved EIA report for TCNTE (AEIAR-196/2016),
all the business helicopter and routine tasks by GFS will be operated
during daytime period. GFS’s main duty is to provide emergency
services to Hong Kong, South China Sea and fulfil international rescue
obligations. Their major types of services include air ambulance, SAR,
supporting law enforcement agencies and fire fighting.
4.2.4.13 Other than the above emergency services, GFS also provides flying
support to all Bureaux and Departments in the HKSAR. The more
frequent ones are flying support for Lands Department to conduct aerial
survey, transporting personnel of Home Affairs Department, Marine
Department, Civil Aviation Department and Information Services
Department for their operations; transporting Chief Executive and
visiting foreign officials for visits in Hong Kong.
4.2.4.14 HKBAC provides a venue for business operation of the helicopters
landing at HKIA including MD 902 Explorer, AgustaWestland AW139,
Sikorsky S-76 and Sikorsky S-92A. According to their websites, MD
902 Explorer (http://hongkong.peninsula.com/en/~/media/Files/Hong-
Kong/at-a-glance/phk-airport-transfer-en.pdf) will be used for flight
between HKIA and Kowloon, while AgustaWestland AW139
(http://www.skyshuttlehk.com/?pid=our-heli-fleet), Sikorsky S-76 and
Sikrosky S-92A
(http://www.helis.com/database/org/cn_china_southern_airlines/) will
be used for flight between HKIA and Macau, HKIA and Mainland
China respectively. Both the GFS and HKBAC are located at
approximately 7km northwest from the proposed development. Hence,
noise impact generated from helicopter approaching, take-off and
manoeuvring are not anticipated. Those for the helicopter routes along
NLH are therefore addressed in this EIA report.
Aircraft approaching and departing HKIA
4.2.4.15 According to the approved 3RS EIA (AEIAR-185/2014), the NEF noise
contours for the existing two runway option in year 2011 based on
operational records and daily radar data is shown in Figure 4.2a. Based
on this information, the NEF 25 contour in year 2011 will not encroach
onto the site boundary. However, the existing two runway option will
be expanded to three runway system, more details have been discussed
in Section 4.6.
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Planned Noise Sources
4.2.4.16 Other than the key existing noise sources within 300m from the site
boundary, there are planned noise sources which may give rise to
potential impacts on existing and future NSRs. They are listed in Table
4.2 and their associated locations are shown in Figure 4.1.
Table 4.7 List of key planned noise sources
Types Noise Sources
Types of
Noise Source Reference
Location[1]
Approximate
Distance
between
proposed
development, m
Possible
Future
Noise
Sources
from the
Project
Sewage Pumping Station
(SPS)
Construction
/ Fixed
PNS01 Within site
boundary
Public Transport
Interchange (PTI) /
Proposed Development
Construction
/ Fixed
PNS02 Within site
boundary
Eastern connection access
on Sham Shui Kok Drive
and Western access via Tai
Ho Interchange
Construction
/ Road
Traffic
PNS03 < 5m
SHD Replanning Works
and Reprovisioned SHD
Construction
/ Rail / Fixed
PNS04 Within site
boundary
SHO Construction
/ Rail / Fixed
PNS05 < 50m
Possible
Future
Noise
Sources
by Others
Sewerage Network [2] Construction CNS01 Within site
boundary
Tuen Mun – Chek Lap Kok
Link (under construction) [2]
Road Traffic CNS02 40m
Road P1 (Tung Chung –
Tai Ho Section) [2]
Construction
/ Road
Traffic
CNS03 50m
Expansion of Hong Kong
International Airport into a
Three-Runway System
(3RS)
Aircraft CNS04 4.5km
Additional Sewage Rising
Mains and Rehabilitation
of the Existing Sewage
Rising Main between Tung
Chung and Siu Ho Wan
Construction CNS05 70m
Notes:
[1] Reference source no. is shown in Figure 4.1.
[2] According to TCNTE (AEIAR-196/2016).
4.2.4.17 The nature and operation of these noise sources are described as follows.
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Sewage Pumping Station (SPS) / Public Transport Interchange (PTI) / Proposed Development
4.2.4.18 Construction of superstructures (including podium and residential
blocks) of the Proposed Development would have potential
construction noise impacts. Commercial uses, kindergartens and utility
plant rooms will be enclosed inside podium. Mechanical plant such as
chillers and pumps will be located inside plant rooms of podium and
hence mechanical ventilation is required. The potential construction
and fixed noise impacts from the ventilation louvers are therefore
addressed in this EIA report.
4.2.4.19 Sewage from the proposed development will be delivered to SHWSTW
for further processing via utilities connecting to existing SHWSTW. In
addition, one ultimate sewage pumping station will be located at
northeast of the proposed development with fully enclosed structure
with exhaust / intake louvers. Potential construction noise and fixed
noise impacts are therefore addressed in this EIA report.
4.2.4.20 A PTI is proposed to serve the residents in the proposed development.
Key noise generating sources inside PTI usually include ventilation
fans, idling engine and manoeuvring vehicles, etc. However, the PTI
would be enclosed within the proposed podium underneath the
proposed residential buildings, and the location of ingress and egress is
designed with no-line-of-sight at the noise sensitive use. However, the
potential construction noise and fixed noise impacts from ventilation
fans are therefore addressed in this EIA report.
Eastern Connection Access on Sham Shui Kok Drive and Western Access via Tai Ho Interchange
4.2.4.21 There is an existing service road located to the east of the depot, which
connects to the Sham Shui Kok Drive along the existing coastline. This
service road would need to be widened slightly to fulfill the highway
standards. According to the preliminary traffic assessment, most of the
traffic from the development would be using the Tai Ho Interchange to
the west of the proposed development. The western access, on the other
hand, would be in form of a short viaduct of approximately 50m long
connecting the podium to the Tai Ho Interchange to be constructed as
part of the Tung Chung East development. The potential road traffic
and construction noise impacts will be addressed in this EIA report.
SHD Replanning Works and Reprovisioned SHD
4.2.4.22 With the completion of depot replanning works, maintenance and
support facilities will be covered by a podium deck. Only exhaust /
intake louvers are expected to be the fixed noise sources. While
potential construction noise, rail noise and fixed noise impacts from the
existing SHD during depot replanning will be addressed in the Railway
EIA, which would be submitted separately for approval under EIAO,
impacts are therefore included and addressed in this EIA report.
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SHO
4.2.4.23 SHO is proposed at the southwest of the proposed development to
provide a more efficient means of transportation and reduce vehicular
emission. Part of current TCL and AEL tracks would need to be re-
aligned accordingly. The rail noise impact from the realigned tracks and
the existing tacks of TCL and AEL will be addressed in this EIA report.
While potential construction noise and fixed noise impacts will be
addressed in the Railway EIA, which would be submitted separately for
approval under EIAO, impacts are therefore included and addressed in
this EIA report.
Sewerage Network (By others)
4.2.4.24 Sewerage network is planned under the approved EIA report for
TCNTE (AEIAR-196/2016), which is located along the seafront of the
site boundary and connected to the SHWSTW. The associated
cumulative construction noise impacts are therefore addressed in this
EIA report.
Tuen Mun – Chek Lap Kok Link (TM-CLK Link) (under construction) (By others)
4.2.4.25 According to the approved EIA report for TM-CLK Link (AEIAR-
146/2009), the link will provide a direct route linking North West New
Territories and North Lantau. It would run along the southwest of the
proposed development. Road traffic noise impacts are therefore
addressed in this EIA report.
Road P1 (Tung Chung – Tai Ho Section) (By others)
4.2.4.26 The Road P1 (Tung Chung – Tai Ho Section) with road speed 50km/h
is a planned road under the approved EIA report for TCNTE (AEIAR-
196/2016) located to west of the site boundary. Road traffic noise
impacts and cumulative construction noise impacts are therefore
addressed in this EIA report.
Expansion of Hong Kong International Airport into a Three-Runway System (3RS) (By others)
4.2.4.27 According to the approved EIA report for 3RS (AEIAR-185/2014), the
NEF noise contours at year 2021, 2030 and 2032 have been predicted.
The NEFs as published from that approved EIA report are shown in
Figure 4.2b to Figure 4.2d. More details have been discussed in
Section 4.6.3 of the EIA report.
Additional Sewage Rising Mains and Rehabilitation of the Existing Sewage Rising Main between Tung Chung and Siu Ho Wan (By others)
4.2.4.28 According to the Construction of Additional Sewage Rising Mains and
Rehabilitation of the Existing Sewage Rising Main between Tung
Chung and Siu Ho Wan – Investigation, Design and Construction
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carried out by Drainage Services Department (DSD) under the
Agreement No. CE 6/2012, twin 1,200mm diameter rising main will be
adopted for conveying the planned sewage flow from Tung Chung and
the airport to the SHWSTW. Cumulative construction noise impacts
are addressed in this EIA report.
4.2.5 Prevailing Noise Levels
4.2.5.1 Prevailing noise levels have been measured within the Subject Site.
Figure 4.3f shows the locations of prevailing noise measurements. A
summary of the results are given in the Table 4.8a.
Table 4.8a Prevailing noise measurement
ID Monitoring Location
Prevailing Noise Levels[1], dB(A)
Daytime and
Evening[2] Night-time[2]
M01 Roof of Main Depot Building
in SHD (Facing NW) 61 59
M02 Roof of Main Depot Building
in SHD (Facing SE) 62 60
M03
In the Vicinity of Building
AB11 Transformer Room
(Facing SE)
71 64
Notes:
[1] Prevailing noise levels include facade correction.
[2] Day: 0700 to 1900 hours, Evening: 1900 to 2300 hours, Night: 2300 to 0700 hours.
4.2.6 Noise Sensitive Receivers
4.2.6.1 With reference to Annex 13 of the EIAO-TM, NSRs include residential
uses (all domestic premises including temporary housing), institutional
uses (educational institutions including kindergarten and nurseries),
hospitals, medical clinics, homes for the aged, convalescent homes,
places of worship, libraries, court of law, performing arts centres,
auditoria and amphitheatres, country park and others.
4.2.6.2 Representative NSRs within the assessment area have been identified
with the first layer of NSRs selected for assessment. These NSRs cover
all existing sensitive developments, committed and planned NSRs
during construction and operational phases.
4.2.6.3 According to the Clause 3.4.5.2 of Study Brief, existing, committed and
planned NSRs shall be identified on relevant Outline Zoning
Plans(OZPs), Development Permission Area (DPA) Plans, Outline
Development Plans (ODP), Layout Plans (LP) and other relevant
published land use plans, including plans and drawings published by
the Lands Department (LandsD) and any land use and development
applications approved by the Town Planning Board, in the vicinity of
the Project. The existing NSRs are identified by means of topographic
maps (10NW12c-d, 10NW21a-d, 10NW22a-d, 10SW1a-b and 9SE5a-
b) aerial photos (CW113128 and CW113262), land status plan and site
inspections. Planned / committed NSRs are identified by making
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reference to the statutory and departmental plans and plans and
drawings published by LandsD covering the vicinity of the Project.
These include the Approved Tung Chung Extension Area OZP No. S/I-
TCE/2, the Draft Tai Ho OZP No. S/I-TH/1, the Siu Ho Wan LP No.
L/I-SHW/1A and North-East Lantau Outline Development Plan No.
D/I-NEL/1. The examination of the statutory plans also reveals that no
land use and development applications have been approved by Town
Planning Board in the vicinity of the Project. As advised by CEDD,
“Technical Study on Developments at Siu Ho Wan and the Associated
Transport Infrastructures – Feasibility Study” is still under on-going
study and there is no committed land uses and implementation
programme available.
4.2.6.4 The existing representative NSR (i.e. Lantau North (Extension)
Country Park) in the vicinity is identified. The photo of existing
representative NSR is shown in Appendix 4.1a. There is no other
existing and committed NSRs within the 300m assessment area.
4.2.6.5 As discussed in Section 4.2, the Base Scheme (see Figure 4.1a) has
been evolved to the Modified Scheme (see Figure 4.1b) with the
consideration of constraints of the existing environment including road
traffic noise and rail noise. The Modified Scheme has been adopted for
subsequent noise assessments.
4.2.6.6 The planned representative NSRs within the site boundary are identified
in Table 4.8 and illustrated in Figure 4.3. Appendix 4.1b indicates the
associated Area Sensitivity Ratings of NSRs under fixed noise and rail
noise assessments.
Table 4.8 Existing and planned representative NSRs
ID[1] Uses[2] No. of Domestic Storey NAP[3]
Existing NSR
N01 C N/A[4] N01-01 to N01-02
Planned NSRs[5]
Phase 1a
101 R 17 101-01, 101-03 to 101-06
103 R 18 103-01, 103-03 to 103-06
104 R 18 104-01 to 104-04
107 R 18 107-01, 107-03 to 107-06
108 R 18 108-01, 108-03 to 108-06
110 R 18 110-01, 110-03 to 110-06
111 R 19 111-01 to 111-04
113 R 19 113-01, 113-03 to 113-06
114 R 19 114-01 to 114-04
116 R 19 116-01 to 116-04
117 R 19 117-01 to 117-04
118 R 19 118-01 to 118-04
Phase 1a to Phase 1b
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ID[1] Uses[2] No. of Domestic Storey NAP[3]
119 R 15 119-01, 119-03 to 119-06
122 R 16 122-01, 122-03 to 122-06
123 R 16 123-01, 123-03 to 123-06
125 R 16 125-01, 125-03 to 125-06
126 R 16 126-01, 126-03 to 126-06
129 R 16 129-01, 129-03 to 129-06
130 R 17 130-01, 130-03 to 130-06
132 R 17 132-01, 132-03 to 132-06
133 R 17 133-01, 133-03 to 133-06
135 R 17 135-01, 135-03 to 135-06
801 E 1 801-01
Phase 1a to Phase 1c
136 R 19 136-01 to 136-04
139 R 20 139-01 to 139-04
140 R 20 140-01 to 140-04
142 R 20 142-01, 142-03 to 142-06
143 R 20 143-01, 143-03 to 143-06
146 R 21 146-01 to 146-04
147 R 21 147-01, 147-03 to 147-06
149 R 21 149-01 to 149-04
Phase 1 to Phase 2
201 R 16 201-01 to 201-04
202 R 16 202-01
203 R 16 203-01
206 R 16 206-01
207 R 17 207-01
208 R 18 208-01
211 R 17 211-01
212 R 17 212-01 to 212-02
215 R 18 215-01 to 215-04
216 R 19 216-01
217 R 19 217-01
218 R 19 218-01
501 E 7 501-01 to 501-05
802 E 1 802-01 to 802-02
Phase 1 to Phase 3
301 R 19 301-01
303 R 19 303-01 to 303-07
304 R 19 304-01
305 R 19 305-01
307 R 20 307-01 to 307-06
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ID[1] Uses[2] No. of Domestic Storey NAP[3]
308 R 21 308-01 to 308-02
309 R 22 309-01 to 309-03
310 R 18 310-01 to 310-04
311 R 18 311-01 to 311-02
312 R 18 312-01
313 R 20 313-01
315 R 20 315-01
318 R 21 318-01
601 E 7 601-01 to 601-09
803 E 1 803-01
Phase 1 to Phase 4
401 R 21 401-01 to 401-04
403 R 21 403-01 to 403-04
404 R 22 404-01 to 404-04
407 R 22 407-01 to 407-04
408 R 20 408-02 to 408-18
409 R 20 409-01 to 409-18
410 R 22 410-01
411 R 22 411-01
413 R 22 413-01
414 R 21 414-01 to 414–15
415 R 21 415-01 to 415-02
417 R 21 417-01
419 R 21 419-01 to 419-14
420 R 22 420-01 to 420-19
421 R 22 421-01 to 421-18
422 R 22 422-01 to 422-12
701 E 7 701-01 to 701-08
804 E 1 804-01
Notes:
[1] The above standards apply to uses that rely on opened windows for ventilation.
These standards should be viewed as the maximum permissible noise levels
assessed at 1 m from the external façade.
[2] R – Residential Premises, E – Educational Institutions, C – Country Parks
[3] NAP equals to Noise Assessment Points.
[4] N/A – Not Applicable, In accordance with Annex 13 of the EIAO-TM, country
parks are considered to be a NSR. However, the EIAO-TM and IND-TM do not
provide a specific noise limits for Country Parks.
[5] According to the Clause 3.2.1, Clause 4.2.1, Clause 5.2.1, Clause 6.2.1, Clause
7.2.1 and Clause 8.2.1 of Appendix C of Study Brief (ESB-294/2016), the
planning parameters and conditions together with constraints identified for the
Project have been reviewed and agreed with relevant Government
bureaux/departments, including Planning Department and Lands Department,
under separate submissions by the Project Proponent.
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4.3 Construction Noise Impact Assessment
4.3.1 Construction Noise Impact Assessment Methodology
4.3.1.1 The construction noise impact assessment during daytime, on weekdays
other than general holidays has been assessed in accordance with the
methodology in paragraphs 5.3 and 5.4 of Annex 13 of the TM.
4.3.1.2 Construction noise assessment has been conducted based on the
following procedures:
Determine 300m from the site boundary and associated works;
Identify and locate representative NSRs that may be affected by the
works;
Obtain the construction method and work sequence for the
construction period;
Obtain the construction plant inventory for each corresponding
construction work sequence;
Determine the SWLs of the plant items according to the
information stated in the GW-TM or other recognised sources of
reference, where appropriate;
Calculate the correction factors based on the distance between the
NSRs and the notional noise source positions of the work sites;
Apply corrections for façade, distance, barrier attenuation, acoustic
reflection where applicable;
Predict construction noise levels at the NSRs;
Quantify the level of impact at the NSRs, in accordance with GW-
TM;
Predict the cumulative noise impacts for any concurrent
construction works in the vicinity of the proposed work;
For any exceedance of noise criteria, all practical mitigation
measures such as alternative construction methodology, quiet plant,
silencer, enclosure, etc, shall be examined to alleviate the predicted
noise impacts as much as practicable; and
Consideration of noise mitigation measures will follow Annex 13
of EIAO-TM and EIAO Guidance Note “Preparation of
Construction Noise Impact Assessment under the Environmental
Impact Assessment Ordinance” [GN 9/2010].
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4.3.2 Identification of Construction Noise Impact
Identification of Assessment Area and Noise Sensitive Receivers
4.3.2.1 For construction noise assessment, the assessment area includes those
within 300m from site boundary and the works of the Project.
Representative NSR locations that would be affected by the
construction activities have been selected from Table 4.8 and are
summarised in Table 4.9 below. They are also shown in Figure 4.4.
Agreement with the Director on the assessment area and noise
assessment points has been obtained prior to the commencement of the
assessment.
Table 4.9 Representative NSRs for construction noise assessment
ID[1] Uses[2] No. of Domestic Storey NAP[3]
SHD Topside Development EIA
Existing NSRs
N01 C N/A[4] N01-01 to N01-02
Planned NSRs
101 R 17 101-06
107 R 18 107-06
108 R 18 108-06
114 R 19 114-04
118 R 19 118-04
119 R 15 119-06
126 R 16 126-06
135 R 17 135-06
136 R 19 136-04
142 R 20 142-06
143 R 20 143-06
149 R 21 149-04
215 R 18 215-01
501 E 7 501-04
307 R 20 307-01
309 R 22 309-02
601 E 7 601-08
401 R 21 401-04
407 R 22 407-04
Railway EIA
Existing NSR
N01 C N/A N01-01
Planned NSRs
101 R 17 101-06
107 R 18 107-06
108 R 18 108-06
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ID[1] Uses[2] No. of Domestic Storey NAP[3]
114 R 19 114-04
118 R 19 118-04
119 R 15 119-06
126 R 16 126-06
135 R 17 135-06
136 R 19 136-04
142 R 20 142-06
143 R 20 143-06
149 R 21 149-04
215 R 18 215-01
307 R 20 307-01
309 R 22 309-02
Notes:
[1] The assessment only includes NSRs which rely on opened windows for
ventilation.
[2] R – Residential Premises, C – Country Parks, E – Educational Institutions.
[3] NAP – Noise Assessment Point.
[4] N/A – Not Applicable. In accordance with Annex 13 of the EIAO-TM, country
parks are considered to be a NSR. However, the EIAO-TM and IND-TM do not
provide a specific noise limits for Country Parks.
Inventory of Noise Sources
4.3.2.2 It should be noted that SHO as well as SHD replanning works, which
would include construction of the foundation and concrete slab for
podium decking of Phases 1 to 4, will be separately implemented and
hence their impacts will be addressed in the Railway EIA, which would
be submitted separately for approval under EIAO. However, the
superstructure for Phase 1 to 4 will be constructed under this Project.
Cumulative construction noise impacts have been addressed in this EIA
report. Key construction activities have been identified for noise
assessment. The major construction works would include the following
activities:
Construction of Sewage Pumping Station;
Construction of new rising main connecting the proposed SPS to
existing Siu Ho Wan Sewage Treatment Works;
Road widening works on Sham Shui Kok Drive;
Construction of western access via Tai Ho Interchange;
Construction of Phase 1 to Phase 4 superstructures including
podium decking and residential blocks;
Construction of SHO and associated track works; and
SHD replanning works, which include construction of concrete slab
for podium decking for Phase 1 to Phase 4.
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4.3.2.3 In addition, cumulative impacts from concurrent projects include
following construction activities:
Construction of Road P1 (Tung Chung – Tai Ho Section);
Construction of Tung Chung East sewerage network; and
Construction of additional sewage rising mains and rehabilitation
of the existing sewage rising main between Tung Chung and Siu
Ho Wan.
4.3.2.4 These construction activities would be carried out with the use of
Powered Mechanical Equipment (PME) including breakers, excavators,
lorries, mobile cranes, concrete pumps, concrete mixers, pokers, rollers,
etc. Sound Power Levels (SWLs) for each PME would be established
according to GW-TM and other relevant information as appropriate.
4.3.2.5 The tentative population in-take year and inventory of noise sources for
NSR at different development phases are shown in Table 4.9a below.
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Table 4.9a Tentative population in-take year and inventory of noise sources for NSR at different development phases
NSR ID Development
Phase
Tentative
Population
In-Take Year
Inventory of Noise Sources
[1] [2] [3] [4] [5] [6] [7] [8] [9] [10]
N01 - - Y Y Y Y Y Y Y Y Y Y
101 Phase 1a Apr 2026 - - Y - Y Y Y - Y -
107 Phase 1a Apr 2026 - - Y - Y Y Y - Y -
108 Phase 1a Apr 2026 - - Y - Y Y Y - Y -
114 Phase 1a Apr 2026 - - Y - Y Y Y - Y -
118 Phase 1a Apr 2026 - - Y - Y Y Y - Y -
119 Phase 1b Oct 2026 - - Y - Y Y Y - Y -
126 Phase 1b Oct 2026 - - Y - Y Y Y - Y -
135 Phase 1b Oct 2026 - - Y - Y Y Y - Y -
136 Phase 1c Apr 2027 - - Y - Y - Y - Y -
142 Phase 1c Apr 2027 - - Y - Y - Y - Y -
143 Phase 1c Apr 2027 - - Y - Y - Y - Y -
149 Phase 1c Apr 2027 - - Y - Y - Y - Y -
501 Phase 2a [11] - - Y - Y - Y - - -
215 Phase 2b July 2030 - - Y - Y - Y - - -
307 Phase 3a Jan 2034 - - Y - Y - Y - - -
309 Phase 3a Jan 2034 - - Y - Y - Y - - -
601 Phase 3b July 2034 - - Y - Y - Y - - -
401 Phase 4a Jan 2035 - - Y - Y - - - - -
407 Phase 4a Jan 2035 - - Y - Y - - - - -
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Notes:
Project:
[1] Construction of Sewage Pumping Station.
[2] Construction of new rising main connecting the proposed SPS to existing Siu Ho Wan Sewage Treatment Works.
[3] Road widening works on Sham Shui Kok Drive.
[4] Construction of western access via Tai Ho Interchange.
[5] Construction of Phase 1 to Phase 4 superstructures including podium decking and residential blocks.
[6] Construction of SHO and associated track works.
[7] SHD replanning works, which include construction of concrete slab for podium decking for Phase 1 to Phase 4.
Concurrent Project:
[8] Construction of Road P1 (Tung Chung – Tai Ho Section).
[9] Construction of Tung Chung East sewerage network.
[10] Construction of additional sewage rising mains and rehabilitation of the existing sewage rising main between Tung Chung and Siu Ho Wan.
[11] As the design, implementation arrangement and programme of the schools is not available at this stage, worst scenario has been adopted for construction noise assessment.
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Utilization Rates and SWLs of Powered Mechanical Equipment
4.3.2.6 Practically, the PMEs will not be operating for all times within a work
site. The utilization rates would depend on the construction sequences,
work fronts scale and construction nature. In this assessment, the
utilization rates have been reviewed by the engineer and have been
concluded to be practical for the purpose of this EIA. Appendix 4.2
tabulates the adopted utilisation rates.
4.3.3 Prediction and Evaluation of Construction Noise Impact
Phases of Construction
4.3.3.1 As discussed in Section 2.7, the proposed development will be
implemented in 4 phases with a total of 10 development packages. This
phasing strategy would depend on a number of considerations. The
final landuse options and its implementation strategy form the
implementation assumption for the construction noise assessment. The
construction programme with phases of construction has been given in
Appendix 2.1 and Appendix 4.3. Agreement with the Director on the
phases of construction has been obtained prior to the commencement
of the assessment.
Scenarios
4.3.3.2 An in-house program has been used for construction noise calculations.
Initially, program runs were conducted without any mitigation
measures (i.e. the “Unmitigated Scenario”). Where noise level
exceedance was identified, further runs would be made assuming
different combinations of mitigation measures to be incorporated (i.e.
the “Mitigated Scenario”).
Prediction of Noise Impact
4.3.3.3 According to the latest design, construction would mainly comprise
the activities as described in Section 4.3.2. The corresponding SWLs
of these activities have been estimated according to the PME’s SWLs
and the assessment methodology in the GW-TM. Appendix 4.2
presents the SWLs for each PME. Appendix 4.4 gives the plant
inventory adopted for each workfront and Appendix 4.3 shows the
locations of workfronts adopted for this construction noise assessment.
4.3.3.4 The monthly unmitigated noise contribution and impacts from
different phases of construction during the construction period have
been conducted in accordance with the work programme given in
Appendix 4.5. Appendix 4.6 and Appendix 4.7 present the calculated
construction noise impacts at selected representative NSRs and at
various representative floor levels respectively. The predicted
construction noise impacts at the NSRs under unmitigated scenario are
summarised in table below.
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Table 4.10 Predicted construction noise impact at NSRs under unmitigated scenario
No.[1] NAP[2][3] Uses[4]
Leq (30mins), dB(A)
Criteria[5] Unmitigated
Noise Level[6] Exceedance[5]
SHD Topside Development EIA
Existing NSRs
N01 N01-01 C N/A[7] 72 -
N01-02 C N/A[7] 67 -
Planned NSRs
101 101-06 R 75 85 10
107 107-06 R 75 83 8
108 108-06 R 75 83 8
114 114-04 R 75 82 7
118 118-04 R 75 84 9
119 119-06 R 75 84 9
126 126-06 R 75 84 9
135 135-06 R 75 85 10
136 136-04 R 75 85 10
142 142-06 R 75 85 10
143 143-06 R 75 84 9
149 149-04 R 75 86 11
215 215-01 R 75 84 9
501 501-04 E 70 (65) 68 - (3)
307 307-01 R 75 80 5
309 309-02 R 75 83 8
601 601-08 E 70 (65) 69 - (4)
401 401-04 R 75 84 9
407 407-04 R 75 82 7
Railway EIA[8]
Existing NSR
N01 N01-01 C N/A[7] 59 -
Planned NSRs
101 101-06 R 75 81 6
107 107-06 R 75 78 3
108 108-06 R 75 78 3
114 114-04 R 75 80 5
118 118-04 R 75 81 6
119 119-06 R 75 70 -
126 126-06 R 75 71 -
135 135-06 R 75 75 -
136 136-04 R 75 81 6
142 142-06 R 75 82 7
143 143-06 R 75 81 6
149 149-04 R 75 86 11
215 215-01 R 75 79 4
307 307-01 R 75 77 2
309 309-02 R 75 81 6
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No.[1] NAP[2][3] Uses[4]
Leq (30mins), dB(A)
Criteria[5] Unmitigated
Noise Level[6] Exceedance[5]
Cumulative
Existing NSR
N01 N01-01 C N/A[7] 72 -
N01-02 C N/A[7] 67 -
Planned NSRs
101 101-06 R 75 85 10
107 107-06 R 75 84 9
108 108-06 R 75 83 8
114 114-04 R 75 82 7
118 118-04 R 75 84 9
119 119-06 R 75 84 9
126 126-06 R 75 84 9
135 135-06 R 75 85 10
136 136-04 R 75 85 10
142 142-06 R 75 85 10
143 143-06 R 75 84 9
149 149-04 R 75 87 12
215 215-01 R 75 84 9
501 501-04 E 70 (65) 68 - (3)
307 307-01 R 75 80 5
309 309-02 R 75 83 8
601 601-08 E 70 (65) 69 - (4)
401 401-04 R 75 84 9
407 407-04 R 75 82 7
Notes:
[1] The assessment only includes NSRs which rely on opened windows for
ventilation.
[2] NAP – Noise Assessment Point.
[3] The first layer of NSRs within 300m from site boundary is included.
[4] R – Residential Premises, C – Country Parks, E – Educational Institutions.
[5] Values in parentheses indicate the noise criterion during examination period
(Jan, Feb, May and June) of educational institution.
[6] Bolded values mean exceedance of the relevant noise criteria.
[7] N/A – Not Applicable. In accordance with Annex 13 of the EIAO-TM, country
parks are considered to be a NSR. However, the EIAO-TM and IND-TM do not
provide a specific noise limits for Country Parks.
[8] Results extracted from Railway EIA (ESB-296/2016).
4.3.3.5 It can be seen from the above table that without any mitigation
measures, exceedances of noise criteria range from 5 to 12 dB(A) for
residential premises and 3 to 4 dB(A) for education institution during
examination period. Details of construction noise impacts for different
phasing are given in Appendix 4.5. Mitigation measures are therefore
required.
4.3.3.6 The total number of dwellings, classrooms and other noise sensitive
receivers that will be exposed to noise impact exceeding the criteria set
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in Annex 5 in the EIAO-TM have been calculated. It is predicted that
a total of about 7750 dwellings and 70 classrooms will be exposed to
construction noise impact under unmitigated scenario.
4.3.4 Mitigation of Construction Noise Impact
4.3.4.1 The predicted noise levels show that the unmitigated construction
noise impacts would exceed the daytime noise criteria. Mitigation
measures are therefore required. The following mitigation measures
have been considered:
Good site practices to limit noise emissions at the source;
Use of quality powered mechanical equipment (QPME); and
Use of temporary noise barriers and noise enclosure to screen
noise from relatively static PMEs.
4.3.4.2 The above mitigation measures would need to be implemented in work
sites as good practices where appropriate. Detailed descriptions of
these mitigation measures are given in the following sections.
(A) Good Site Management Practices
4.3.4.3 Good site practice and noise management techniques could
considerably reduce the noise impact from construction site activities
on nearby NSRs. The following measures should be practised during
each phase of construction:
only well-maintained plant should be operated on-site and plant
should be serviced regularly during the construction
programme;
machines and plant (such as trucks, cranes) that may be in
intermittent use should be shut down between work periods or
should be throttled down to a minimum;
plant known to emit noise strongly in one direction, where
possible, be orientated so that the noise is directed away from
nearby NSRs;
silencers or mufflers on construction equipment should be
properly fitted and maintained during the construction works;
mobile plant should be sited as far away from NSRs as possible
and practicable; and
material stockpiles, site office and other structures should be
effectively utilised, where practicable, to screen noise from on-
site construction activities.
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4.3.4.4 The benefits of these techniques can vary according to specific site
conditions and operations. The environmental noise climate would
certainly be improved with these control practices, although the
improvement can only be quantified during implementation when
specific site parameters are known.
(B) Use of Quality Powered Mechanical Equipment (QPME)
4.3.4.5 The use of quiet plant associated with the construction works is made
reference to the PME listed in the TM or the QPME/ other commonly
used PME listed in EPD web pages as far as possible which includes
the SWLs for specific quiet PME. It is generally known (supported by
field measurement) that particular models of construction equipment
are quieter than standard types given in the GW-TM. Whilst it is
generally considered too restrictive to specify that the Contractor has
to use specific models or items of plant, it is reasonable and practicable
to propose plant noise performance specifications for specific PME so
that some flexibility in selection of plant is allowed.
(C) Use of Movable Noise Barrier and Full Enclosure for
Relatively Fixed Plant Source
4.3.4.6 Movable temporary noise barriers that can be located close to noisy
plant and be moved concurrently with the plant along a worksite can
be very effective for screening noise from NSRs. The Contractor shall
be responsible for design of the movable temporary noise barriers with
due consideration given to the size of the PME and the requirement of
intercepting the line of sight between the NSRs and PME. The
minimum surface density of the movable noise barrier is 10kg/m2. This
measure is particularly effective for low level zone of NSRs. A
cantilevered top cover would be required to achieve screening benefits
at upper floors of NSRs.
4.3.4.7 Movable temporary noise barriers will be used for some PME (e.g.
excavator). It is anticipated that suitably designed barriers could
achieve at least 5dB(A) reduction for movable plant and 10dB(A) for
stationary plant.
4.3.4.8 The use of standard enclosure has been considered in this assessment
to shelter relatively fixed plant including air compressor, generator.
These standard enclosures can provide at least 15dB(A) noise
reduction.
4.3.4.9 A summary of the movable temporary noise barrier and standard
enclosure adopted for various PMEs is given in Appendix 4.2 and
indicative drawing for barrier and standard enclosure is shown in
Appendix 4.8, and the associated noise reduction is summarised in
Table 4.11 below. The feasibility, practicability, programming and
effectiveness of the above mitigation measures have been reviewed by
engineer.
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Table 4.11 Summary of barrier and standard enclosure adopted for PMEs
PME Enclosure / Barrier Attenuation, dB(A)
Air Compressor Enclosure -15
Asphalt Paver Barrier -5
Bar Bender and Cutter
(Electric)
Barrier -10
Hand Held Breaker Barrier -10
Concrete Lorry Mixer Barrier -5
Concrete Pump Enclosure -15
Mobile Crane Barrier -5
Compactor, Vibratory Barrier -5
Grinder Barrier -5
Dump Truck Barrier -5
Drill Rig, Rotary Type
(Diesel)
Barrier -10
Excavator Barrier -5
Backhoe Barrier -5
Generator Enclosure -15
Grout Mixer Enclosure -15
Grout Pump Enclosure -15
Hoist, Passenger/Material
(Petrol)
Barrier -5
Lorry Barrier -5
Piling, Diaphragm Wall,
Hydraulic Extractor
Barrier -5
Piling, Large Dia Bored,
Reverse Circulation Drill
Barrier -10
Power Rammer (Petrol) Barrier -10
Vibratory Poker Barrier -10
Vibrating Hammer Barrier -10
Poker, Vibratory, Hand-
Held (Electric)
Barrier -10
Roller Barrier -5
Roller, Vibratory Barrier -5
Saw, Concrete Barrier -10
Water Pump (Electric) Barrier -10
Water Pump, Submersible
(Electric)
Barrier -10
Assessment Results of Construction Noise under Mitigated Scenario
4.3.4.10 With the adoption of the above mitigation measures, the monthly
mitigated noise contribution and impacts from different phases of
construction during the construction period have been conducted in
accordance with the work programme given in Appendix 4.9.
4.3.4.11 Appendix 4.10 and Appendix 4.11 present a summary of the
calculated construction noise impacts at selected representative NSRs
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and at various representative floor levels for mitigated scenario
respectively. Cumulative impact from concurrent projects stated in
Section 4.3.2 to those identified NSRs has been evaluated and the
predicted construction noise impacts at the NSRs are summarised in
the Table 4.12.
Table 4.12 Predicted construction noise impact at NSRs under mitigated scenario
No.[1] NAP[2][3] Uses[4]
Leq (30mins), dB(A)
Criteria[5] Mitigated
Noise Level[6] Exceedance[5]
SHD Topside Development EIA
Existing NSRs
N01 N01-01 C N/A[7] 59 -
N01-02 C N/A[7] 56 -
Planned NSRs
101 101-06 R 75 72 -
107 107-06 R 75 70 -
108 108-06 R 75 70 -
114 114-04 R 75 68 -
118 118-04 R 75 71 -
119 119-06 R 75 71 -
126 126-06 R 75 71 -
135 135-06 R 75 71 -
136 136-04 R 75 71 -
142 142-06 R 75 72 -
143 143-06 R 75 71 -
149 149-04 R 75 74 -
215 215-01 R 75 71 -
501 501-04 E 70 (65) 55 -
307 307-01 R 75 68 -
309 309-02 R 75 71 -
601 601-08 E 70 (65) 57 -
401 401-04 R 75 72 -
407 407-04 R 75 70 -
Railway EIA[8]
Existing NSR
N01 N01-01 C N/A[7] 59 -
Planned NSRs
101 101-06 R 75 75 -
107 107-06 R 75 73 -
108 108-06 R 75 73 -
114 114-04 R 75 75 -
118 118-04 R 75 75 -
119 119-06 R 75 70 -
126 126-06 R 75 71 -
135 135-06 R 75 73 -
136 136-04 R 75 75 -
142 142-06 R 75 74 -
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No.[1] NAP[2][3] Uses[4]
Leq (30mins), dB(A)
Criteria[5] Mitigated
Noise Level[6] Exceedance[5]
143 143-06 R 75 74 -
149 149-04 R 75 75 -
215 215-01 R 75 75 -
307 307-01 R 75 69 -
309 309-02 R 75 73 -
Cumulative
Existing NSR
N01 N01-01 C N/A[7] 60 -
N01-02 C N/A[7] 56 -
Planned NSRs
101 101-06 R 75 75 -
107 107-06 R 75 74 -
108 108-06 R 75 74 -
114 114-04 R 75 75 -
118 118-04 R 75 75 -
119 119-06 R 75 73 -
126 126-06 R 75 72 -
135 135-06 R 75 73 -
136 136-04 R 75 75 -
142 142-06 R 75 74 -
143 143-06 R 75 75 -
149 149-04 R 75 75 -
215 215-01 R 75 75 -
501 501-04 E 70 (65) 55 -
307 307-01 R 75 70 -
309 309-02 R 75 74 -
601 601-08 E 70 (65) 57 -
401 401-04 R 75 72 -
407 407-04 R 75 70 -
Notes:
[1] The assessment only includes NSRs which rely on opened windows for
ventilation.
[2] NAP – Noise Assessment Points.
[3] The first layer of NSRs within 300m from site boundary is included.
[4] R – Residential Premises, C – Country Parks, E – Educational Institutions.
[5] Values in parentheses indicate the noise criterion during examination period
(Jan, Feb, May and June) of educational institution.
[6] Bolded values mean exceedance of the relevant noise criteria.
[7] N/A – Not Applicable. In accordance with Annex 13 of the EIAO-TM, country
parks are considered to be a NSR. However, the EIAO-TM and IND-TM do not
provide a specific noise limits for Country Parks.
[8] Results extracted from Railway EIA (ESB-296/2016).
4.3.4.12 From Table 4.12, cumulative construction noise impact arising from
the Project and other committed projects at all the planned and existing
NSRs including residential premises and schools during normal and
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examination periods can be properly mitigated by implementing the
proposed noise control measures. The construction noise impact at
Country Park (N01) ranges from 56 to 60dB(A). Given the transient
nature of visitor using hiking trails and mitigation measures are
recommended to reduce the noise emission, adverse noise impact is
not anticipated.
4.3.4.13 Details of construction noise impact at different phasing are given in
Appendix 4.9. There would be no number of dwellings, classrooms
and other sensitive receivers that will be exposed to noise impact
exceeding the criteria set in Annex 5 in the EIAO-TM.
4.3.5 Evaluation of Residual Construction Noise Impact
4.3.5.1 Construction noise impact arising from the Project at all the planned
and existing NSRs including residential premises, country parks and
schools during normal and examination periods can be properly
mitigated by implementing the proposed noise control measures and
the predicted noise levels would comply with the EIAO-TM normal
daytime criteria. There would be no dwellings, classrooms and other
sensitive receivers that will be exposed to adverse residual
construction noise impact exceeding the criteria set in Annex 5 in the
EIAO-TM.
4.4 Road Traffic Noise Impact Assessment
4.4.1 Road Traffic Noise Impact Assessment Methodology
4.4.1.1 Road traffic noise calculation is based on the method of UK
Department of Transport “Calculation of Road Traffic Noise (CRTN)”.
The predicted noise levels at the sensitive receivers include 2.5dB(A)
facade reflection and correction factors of effects due to gradient,
distance, view angle, road surface and barriers.
4.4.1.2 The computer programme, RoadNoise 2000, has been used to model
traffic noise from road networks. It complies with the Calculation of
Road Traffic Noise (CRTN) developed by the UK Department of
Transport. The road traffic noise has been presented in terms of noise
levels exceeded for 10% of the one-hour period during peak traffic
flow [i.e. L10(1hr) dB(A)].
4.4.1.3 Calculations of future road traffic noise are based on the peak hourly
flow for the maximum traffic projected within a 15 years period upon
full operation of the roadworks or full occupation of the NSRs. The
traffic projection has taken into account the induced traffic due to the
operation of other planned roads and committed projects as below:
Hong Kong – Zhuhai – Macao Bridge Hong Kong Boundary
Crossing Facilities (AEIAR-145/2009);
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Hong Kong – Zhuhai – Macao Bridge Hong Kong Link Road
(AEIAR-144/2009);
Tuen Mun – Chek Lap Kok Link (AEIAR-146/2009);
Expansion of HKIA into a Three-Runway System (AEIAR-
185/2014);
Tung Chung New Town Extension (AEIAR-196/2016);
North Commercial District of Hong Kong International Airport;
and
Topside Development at HZMB HKBCF.
4.4.1.4 Since the first population intake and ultimate occupation year of the
Project will be in Year 2026 and 2038 respectively, the assessment
year for road traffic noise has been taken as Year 2053 (which is the
maximum traffic projection within 15 years after full operation for the
proposed development). Figure 4.5 shows the 300m from the site
boundary which would be modelled by RoadNoise. Computer plots for
the prevailing scenario and with project scenario are shown in
Appendix 4.12. In addition, following phasings have been conducted:
Phase 11 – population intake at April 2027;
Phase 1 to Phase 2 – population intake at January 2030;
Phase 1 to Phase 3 – population intake at January 2034;
Full occupation (Phase 1 to Phase 4) – population intake at July
2038.
4.4.2 Identification of Road Traffic Noise Impact
Identification of Assessment Area and Noise Sensitive Receivers
4.4.2.1 For operational road traffic noise assessment, the assessment area for
the road traffic noise impact includes those within 300m from the site
boundary of the Project. Representative NSRs locations have been
selected from Table 4.8 and are summarised in the table below and
illustrated in Figure 4.5. Agreement with the Director on the
assessment area and noise assessment points has been obtained prior
to the commencement of the assessment.
1 Phase 1 is sub-divided into Phase 1a, Phase 1b and Phase 1c. In view of the curvative design of
the building layout for Block 101 and the modified layout for Block 118, noise exceedances for
these two blocks during Phase 1a and Phase 1b are not anticipated before Phase 1c population
intake. Therefore, the entire Phase 1 (i.e. Phase 1a to Phase 1c) is considered representative to
present the predicted noise levels for its sub-divided phases.
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Table 4.13 Representative NSRs for road traffic noise assessment
ID[1] Uses[2] No. of Domestic Storey NAP[3]
Planned NSRs
Phase 1
101 R 17 101-01, 101-03 to 101-06
103 R 18 103-01, 103-03 to 103-06
104 R 18 104-01 to 104-04
107 R 18 107-01, 107-03 to 107-06
108 R 18 108-01, 108-03 to 108-06
110 R 18 110-01, 110-03 to 110-06
111 R 19 111-01 to 111-04
113 R 19 113-01, 113-03 to 113-06
114 R 19 114-01 to 114-04
116 R 19 116-01 to 116-04
117 R 19 117-01 to 117-04
118 R 19 118-01 to 118-04
119 R 15 119-01, 119-03 to 119-06
122 R 16 122-01, 122-03 to 122-06
123 R 16 123-01, 123-03 to 123-06
125 R 16 125-01, 125-03 to 125-06
126 R 16 126-01, 126-03 to 126-06
129 R 16 129-01, 129-03 to 129-06
130 R 17 130-01, 130-03 to 130-06
132 R 17 132-01, 132-03 to 132-06
133 R 17 133-01, 133-03 to 133-06
135 R 17 135-01, 135-03 to 135-06
136 R 19 136-01 to 136-04
139 R 20 139-01 to 139-04
140 R 20 140-01 to 140-04
142 R 20 142-01, 142-03 to 142-06
143 R 20 143-01, 143-03 to 143-06
146 R 21 146-01 to 146-04
147 R 21 147-01, 147-03 to 147-06
149 R 21 149-01 to 149-04
801 E 1 801-01
Phase 1 to Phase 2
201 R 16 201-01 to 201-03
206 R 16 206-01
211 R 17 211-01
212 R 17 212-01 to 212-02
215 R 18 215-03
501 E 7 501-01 to 501-05
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ID[1] Uses[2] No. of Domestic Storey NAP[3]
802 E 1 802-01 to 802-02
Phase 1 to Phase 3
301 R 19 301-01
303 R 19 303-01
304 R 19 304-01
305 R 19 305-01
307 R 20 307-01 to 307-04
308 R 21 308-01
309 R 22 309-01
310 R 18 310-01
311 R 18 311-01
312 R 18 312-01
601 E 7 601-01 to 601-09
803 E 1 803-01
Phase 1 to Phase 4
401 R 21 401-01 to 401-04
403 R 21 403-01 to 403-04
404 R 22 404-01 to 404-04
407 R 22 407-01 to 407-04
408 R 20 408-02 to 408-18
409 R 20 409-01 to 409-18
414 R 21 414-01
415 R 21 415-01 to 415-02
419 R 21 419-01 to 419-13
420 R 22 420-01 to 420-19
421 R 22 421-01 to 421-17
422 R 22 422-01 to 422-12
701 E 7 701-01 to 701-08
804 E 1 804-01
Notes:
[1] The assessment only includes NSRs which rely on opened windows for
ventilation.
[2] R – Residential Premises, E – Educational Institutions
[3] NAP – Noise Assessment Point
Inventory of Noise Sources
4.4.2.2 Major road traffic noise sources include roads in the vicinity of the site
boundary and the associated road networks such as NLH and TM-CLK
Link being implemented. The Road P1 (Tung Chung – Tai Ho Section)
under the approved EIA report for TCNTE (AEIAR-196/2016) are
also included. Also, the eastern connection access on Sham Shui Kok
Drive and western access via Tai Ho Interchange are included. Hence,
road traffic noise impacts on planned NSRs have been assessed
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accordingly. Details of traffic forecast at assessment year 2053 are
given in Appendix 4.13. Agreement with the Director on the road
sections has been obtained prior to the commencement of the
assessment.
4.4.3 Prediction and Evaluation of Road Traffic Noise Impact
Scenarios
4.4.3.1 The road traffic noise impact assessment of the Project has been
conducted with respect to the criteria set in Annex 5 of the TM (See
Section 4.1.3).
4.4.3.2 The road traffic noise model adopted in the EIA includes following
scenarios:
Unmitigated scenario at assessment year 2053 for Phase 1 population intake in year 2027 (Appendix 4.14a);
Mitigated scenario at assessment year 2053 Phase 1 population intake in year 2027 (Appendix 4.15a);
Unmitigated scenario at assessment year 2053 for Phase 1 to Phase 2 population intake in year 2030 (Appendix 4.14b);
Mitigated scenario at assessment year 2053 for Phase 1 to Phase 2 population intake in year 2030 (Appendix 4.15b);
Unmitigated scenario at assessment year 2053 for Phase 1 to Phase 3 population intake in year 2034 (Appendix 4.14c);
Mitigated scenario at assessment year 2053 for Phase 1 to Phase 3 population intake in year 2034 (Appendix 4.15c);
Unmitigated scenario at assessment year 2053 (Maximum traffic projection within 15 years after full occupation, i.e. Phase 1 to Phase 4 in year 2038) (Appendix 4.14d); and
Mitigated scenario at assessment year 2053 (Maximum traffic projection within 15 years after full occupation, i.e. Phase 1 to Phase 4 in year 2038) (Appendix 4.15d).
4.4.3.3 Maximum traffic projection within 15 years after full occupation in
year 2038 is predicted to occur in year 2053. For conservative purpose,
year 2053 is selected for the assessment year for all chosen
representative scenarios. The validity of traffic flow prediction
adopted in the road traffic noise assessment has been confirmed with
Transport Department (TD).
Prediction of Noise Impact
4.4.3.4 The predicted road traffic noise levels at each representative NSRs
under unmitigated scenario in different phases are presented in Table
4.14. Appendix 4.14 shows the details of the noise impacts at different
levels of the NSRs under unmitigated scenario in different phases.
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Table 4.14a Predicted road traffic noise impact at existing and planned NSRs under unmitigated scenario (Phase 1)
ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3]
Criteria,
L10 (1hr)
dB(A)
Noise
Impact,
L10 (1hr)
dB(A)[4]
Mitigation
Measures
Required
[Y/N]
Planned NSRs
Phase 1
101 R 17 101-01, 101-03 to 101-06 70 <55 - 67 N
103 R 18 103-01, 103-03 to 103-06 70 <55 - 75 Y
104 R 18 104-01 to 104-04 70 <55 N
107 R 18 107-01, 107-03 to 107-06 70 <55 - 69 N
108 R 18 108-01, 108-03 to 108-06 70 <55 - 68 N
110 R 18 110-01, 110-03 to 110-06 70 <55 - 75 Y
111 R 19 111-01 to 111-04 70 <55 N
113 R 19 113-01, 113-03 to 113-06 70 <55 - 75 Y
114 R 19 114-01 to 114-04 70 <55 N
116 R 19 116-01 to 116-04 70 <55 N
117 R 19 117-01 to 117-04 70 <55 N
118 R 19 118-01 to 118-04 70 <55 N
119 R 15 119-01, 119-03 to 119-06 70 <55 - 63 N
122 R 16 122-01, 122-03 to 122-06 70 <55 - 69 N
123 R 16 123-01, 123-03 to 123-06 70 <55 - 69 N
125 R 16 125-01, 125-03 to 125-06 70 <55 - 64 N
126 R 16 126-01, 126-03 to 126-06 70 <55 - 70 N
129 R 16 129-01, 129-03 to 129-06 70 <55 - 67 N
130 R 17 130-01, 130-03 to 130-06 70 <55 - 65 N
132 R 17 132-01, 132-03 to 132-06 70 <55 - 69 N
133 R 17 133-01, 133-03 to 133-06 70 <55 - 70 N
135 R 17 135-01, 135-03 to 135-06 70 <55 - 69 N
136 R 19 136-01 to 136-04 70 <55 N
139 R 20 139-01 to 139-04 70 <55 N
140 R 20 140-01 to 140-04 70 <55 N
142 R 20 142-01, 142-03 to 142-06 70 <55 - 70 N
143 R 20 143-01, 143-03 to 143-06 70 57 - 72 Y
146 R 21 146-01 to 146-04 70 <55 N
147 R 21 147-01, 147-03 to 147-06 70 <55 - 75 Y
149 R 21 149-01 to 149-04 70 <55 N
801 E 1 801-01 65 67 Y
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] R – Residential Premises, E – Educational Institutions
[3] NAP – Noise Assessment Point
[4] Bolded values mean exceedance of the relevant noise criteria.
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Table 4.14b Predicted road traffic noise impact at existing and planned NSRs under unmitigated scenario (Phase 1 to Phase 2)
ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3]
Criteria,
L10 (1hr)
dB(A)
Noise
Impact,
L10 (1hr)
dB(A)[4]
Mitigation
Measures
Required
[Y/N]
Planned NSRs
Phase 1
101 R 17 101-01, 101-03 to 101-06 70 <55 - 67 N
103 R 18 103-01, 103-03 to 103-06 70 <55 - 75 Y
104 R 18 104-01 to 104-04 70 <55 N
107 R 18 107-01, 107-03 to 107-06 70 <55 - 69 N
108 R 18 108-01, 108-03 to 108-06 70 <55 - 68 N
110 R 18 110-01, 110-03 to 110-06 70 <55 - 75 Y
111 R 19 111-01 to 111-04 70 <55 N
113 R 19 113-01, 113-03 to 113-06 70 <55 - 75 Y
114 R 19 114-01 to 114-04 70 <55 N
116 R 19 116-01 to 116-04 70 <55 N
117 R 19 117-01 to 117-04 70 <55 N
118 R 19 118-01 to 118-04 70 <55 N
119 R 15 119-01, 119-03 to 119-06 70 <55 - 63 N
122 R 16 122-01, 122-03 to 122-06 70 <55 - 69 N
123 R 16 123-01, 123-03 to 123-06 70 <55 - 69 N
125 R 16 125-01, 125-03 to 125-06 70 <55 - 64 N
126 R 16 126-01, 126-03 to 126-06 70 <55 - 70 N
129 R 16 129-01, 129-03 to 129-06 70 <55 - 67 N
130 R 17 130-01, 130-03 to 130-06 70 <55 - 65 N
132 R 17 132-01, 132-03 to 132-06 70 <55 - 69 N
133 R 17 133-01, 133-03 to 133-06 70 <55 - 70 N
135 R 17 135-01, 135-03 to 135-06 70 <55 - 69 N
136 R 19 136-01 to 136-04 70 <55 N
139 R 20 139-01 to 139-04 70 <55 N
140 R 20 140-01 to 140-04 70 <55 N
142 R 20 142-01, 142-03 to 142-06 70 <55 - 70 N
143 R 20 143-01, 143-03 to 143-06 70 57 - 72 Y
146 R 21 146-01 to 146-04 70 <55 N
147 R 21 147-01, 147-03 to 147-06 70 <55 - 75 Y
149 R 21 149-01 to 149-04 70 <55 N
801 E 1 801-01 65 67 Y
Phase 1 to Phase 2
201 R 16 201-01 to 201-03 70 55 - 67 N
206 R 16 206-01 70 <55 - 64 N
211 R 17 211-01 70 56 - 70 N
212 R 17 212-01 to 212-02 70 <55 - 67 N
215 R 18 215-03 70 <55 - 63 N
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ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3]
Criteria,
L10 (1hr)
dB(A)
Noise
Impact,
L10 (1hr)
dB(A)[4]
Mitigation
Measures
Required
[Y/N]
501 E 7 501-01 to 501-05 65 <55 - 65 N
802 E 1 802-01 to 802-02 65 66 - 67 Y
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] R – Residential Premises, E – Educational Institutions
[3] NAP – Noise Assessment Point
[4] Bolded values mean exceedance of the relevant noise criteria.
Table 4.14c Predicted road traffic noise impact at existing and planned NSRs under unmitigated scenario (Phase 1 to Phase 3)
ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3]
Criteria,
L10 (1hr)
dB(A)
Noise
Impact,
L10 (1hr)
dB(A)[4]
Mitigation
Measures
Required
[Y/N]
Planned NSRs
Phase 1
101 R 17 101-01, 101-03 to 101-06 70 <55 - 67 N
103 R 18 103-01, 103-03 to 103-06 70 <55 - 75 Y
104 R 18 104-01 to 104-04 70 <55 N
107 R 18 107-01, 107-03 to 107-06 70 <55 - 69 N
108 R 18 108-01, 108-03 to 108-06 70 <55 - 68 N
110 R 18 110-01, 110-03 to 110-06 70 <55 - 75 Y
111 R 19 111-01 to 111-04 70 <55 N
113 R 19 113-01, 113-03 to 113-06 70 <55 - 75 Y
114 R 19 114-01 to 114-04 70 <55 N
116 R 19 116-01 to 116-04 70 <55 N
117 R 19 117-01 to 117-04 70 <55 N
118 R 19 118-01 to 118-04 70 <55 N
119 R 15 119-01, 119-03 to 119-06 70 <55 - 63 N
122 R 16 122-01, 122-03 to 122-06 70 <55 - 69 N
123 R 16 123-01, 123-03 to 123-06 70 <55 - 69 N
125 R 16 125-01, 125-03 to 125-06 70 <55 - 64 N
126 R 16 126-01, 126-03 to 126-06 70 <55 - 70 N
129 R 16 129-01, 129-03 to 129-06 70 <55 - 67 N
130 R 17 130-01, 130-03 to 130-06 70 <55 - 65 N
132 R 17 132-01, 132-03 to 132-06 70 <55 - 69 N
133 R 17 133-01, 133-03 to 133-06 70 <55 - 70 N
135 R 17 135-01, 135-03 to 135-06 70 <55 - 69 N
136 R 19 136-01 to 136-04 70 <55 N
139 R 20 139-01 to 139-04 70 <55 N
140 R 20 140-01 to 140-04 70 <55 N
142 R 20 142-01, 142-03 to 142-06 70 <55 - 70 N
143 R 20 143-01, 143-03 to 143-06 70 57 - 72 Y
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ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3]
Criteria,
L10 (1hr)
dB(A)
Noise
Impact,
L10 (1hr)
dB(A)[4]
Mitigation
Measures
Required
[Y/N]
146 R 21 146-01 to 146-04 70 <55 N
147 R 21 147-01, 147-03 to 147-06 70 <55 - 75 Y
149 R 21 149-01 to 149-04 70 <55 N
801 E 1 801-01 65 67 Y
Phase 1 to Phase 2
201 R 16 201-01 to 201-03 70 55 - 67 N
206 R 16 206-01 70 <55 - 64 N
211 R 17 211-01 70 56 - 70 N
212 R 17 212-01 to 212-02 70 <55 - 67 N
215 R 18 215-03 70 <55 - 62 N
501 E 7 501-01 to 501-05 65 <55 - 65 N
802 E 1 802-01 to 802-02 65 66 - 67 Y
Phase 1 to Phase 3
301 R 19 301-01 70 <55 - 66 N
303 R 19 303-01 70 55 - 67 N
304 R 19 304-01 70 <55 - 65 N
305 R 19 305-01 70 <55 - 66 N
307 R 20 307-01 to 307-04 70 56 - 70 N
308 R 21 308-01 70 59 - 67 N
309 R 22 309-01 70 62 - 68 N
310 R 18 310-01 70 <55 - 66 N
311 R 18 311-01 70 <55 - 67 N
312 R 18 312-01 70 <55 - 66 N
601 E 7 601-01 to 601-09 65 <55 - 71 Y
803 E 1 803-01 65 <55 N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] R – Residential Premises, E – Educational Institutions
[3] NAP – Noise Assessment Point
[4] Bolded values mean exceedance of the relevant noise criteria.
Table 4.14d Predicted road traffic noise impact at existing and planned NSRs under unmitigated scenario (full occupation after Phase 4)
ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3]
Criteria,
L10 (1hr)
dB(A)
Noise
Impact,
L10 (1hr)
dB(A)[4]
Mitigation
Measures
Required
[Y/N]
Planned NSRs
Phase 1
101 R 17 101-01, 101-03 to 101-06 70 <55 - 67 N
103 R 18 103-01, 103-03 to 103-06 70 <55 - 75 Y
104 R 18 104-01 to 104-04 70 <55 N
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Page 4-46
ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3]
Criteria,
L10 (1hr)
dB(A)
Noise
Impact,
L10 (1hr)
dB(A)[4]
Mitigation
Measures
Required
[Y/N]
107 R 18 107-01, 107-03 to 107-06 70 <55 - 69 N
108 R 18 108-01, 108-03 to 108-06 70 <55 - 68 N
110 R 18 110-01, 110-03 to 110-06 70 <55 - 75 Y
111 R 19 111-01 to 111-04 70 <55 N
113 R 19 113-01, 113-03 to 113-06 70 <55 - 75 Y
114 R 19 114-01 to 114-04 70 <55 N
116 R 19 116-01 to 116-04 70 <55 N
117 R 19 117-01 to 117-04 70 <55 N
118 R 19 118-01 to 118-04 70 <55 N
119 R 15 119-01, 119-03 to 119-06 70 <55 - 63 N
122 R 16 122-01, 122-03 to 122-06 70 <55 - 69 N
123 R 16 123-01, 123-03 to 123-06 70 <55 - 69 N
125 R 16 125-01, 125-03 to 125-06 70 <55 - 64 N
126 R 16 126-01, 126-03 to 126-06 70 <55 - 70 N
129 R 16 129-01, 129-03 to 129-06 70 <55 - 67 N
130 R 17 130-01, 130-03 to 130-06 70 <55 - 65 N
132 R 17 132-01, 132-03 to 132-06 70 <55 - 69 N
133 R 17 133-01, 133-03 to 133-06 70 <55 - 70 N
135 R 17 135-01, 135-03 to 135-06 70 <55 - 69 N
136 R 19 136-01 to 136-04 70 <55 N
139 R 20 139-01 to 139-04 70 <55 N
140 R 20 140-01 to 140-04 70 <55 N
142 R 20 142-01, 142-03 to 142-06 70 <55 - 70 N
143 R 20 143-01, 143-03 to 143-06 70 <55 - 72 Y
146 R 21 146-01 to 146-04 70 <55 N
147 R 21 147-01, 147-03 to 147-06 70 <55 - 75 Y
149 R 21 149-01 to 149-04 70 <55 N
801 E 1 801-01 65 67 Y
Phase 1 to Phase 2
201 R 16 201-01 to 201-03 70 55 - 67 N
206 R 16 206-01 70 <55 - 64 N
211 R 17 211-01 70 56 - 70 N
212 R 17 212-01 to 212-02 70 <55 - 67 N
215 R 18 215-03 70 <55 - 62 N
501 E 7 501-01 to 501-05 65 <55 - 65 N
802 E 1 802-01 to 802-02 65 66 - 67 Y
Phase 1 to Phase 3
301 R 19 301-01 70 <55 - 66 N
303 R 19 303-01 70 55 - 67 N
304 R 19 304-01 70 <55 - 65 N
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ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3]
Criteria,
L10 (1hr)
dB(A)
Noise
Impact,
L10 (1hr)
dB(A)[4]
Mitigation
Measures
Required
[Y/N]
305 R 19 305-01 70 <55 - 66 N
307 R 20 307-01 to 307-04 70 <55 - 69 N
308 R 21 308-01 70 <55 - 63 N
309 R 22 309-01 70 <55 - 63 N
310 R 18 310-01 70 <55 - 66 N
311 R 18 311-01 70 <55 - 66 N
312 R 18 312-01 70 <55 - 66 N
601 E 7 601-01 to 601-09 65 <55 - 71 Y
803 E 1 803-01 65 <55 N
Phase 1 to Phase 4
401 R 21 401-01 to 401-04 70 <55 N
403 R 21 403-01 to 403-04 70 <55 N
404 R 22 404-01 to 404-04 70 <55 - 56 N
407 R 22 407-01 to 407-04 70 <55 N
408 R 20 408-02 to 408-18 70 55 - 73 Y
409 R 20 409-01 to 409-18 70 <55 - 72 Y
414 R 21 414-01 70 55 - 68 N
415 R 21 415-01 to 415-02 70 <55 - 69 N
419 R 21 419-01 to 419-13 70 <55 - 70 N
420 R 22 420-01 to 420-19 70 <55 - 71 Y
421 R 22 421-01 to 421-17 70 <55 - 74 Y
422 R 22 422-01 to 422-12 70 <55 - 75 Y
701 E 7 701-01 to 701-08 65 <55 - 73 Y
804 E 1 804-01 65 <55 N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] R – Residential Premises, E – Educational Institutions
[3] NAP – Noise Assessment Point
[4] Bolded values mean exceedance of the relevant noise criteria.
4.4.3.5 From Table 4.14 and Appendix 4.14, the predicted noise levels at the
following planned NSRs would exceed the respective noise criteria:
Table 4.14e Representative planned NSRs exceed respective criteria and require mitigation measures
ID[1] Uses[2] NAP[3]
103 R 103-01, 103-03 to 103-05
110 R 110-01, 110-03, 110-05
113 R 113-01, 113-03 to 113-05
143 R 143-01, 143-03, 143-05
147 R 147-01, 147-03, 147-05
408 R 408-04 to 408-11, 408-14 to 408-18
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ID[1] Uses[2] NAP[3]
409 R 409-01 to 409-05, 409-07, 409-14 to 409-18
420 R 420-10 to 420-14
421 R 421-06 to 421-16
422 R 422-03 to 422-10, 422-12
601 E 601-03 to 601-04, 601-07 to 601-08
701 E 701-06 to 701-08
801 E 801-01
802 E 802-01 to 802-02
Notes:
[1] The assessment only includes NSRs which rely on opened windows for
ventilation.
[2] R – Residential Premises, E – Educational Institutions
[3] NAP – Noise Assessment Point
4.4.3.6 The total number of dwellings, classrooms and other noise sensitive
receivers that will be exposed to noise impact exceeding the criteria set
in Annex 5 in the EIAO-TM has been calculated. It is predicted that a
total of about, about 200 dwellings and 5 classrooms for Phase 1, about
200 dwellings and 15 classrooms for Phase 1 to Phase 2, about 200
dwellings and 35 classrooms for Phase 1 to Phase 3 and about 400
dwellings and 55 classrooms for Phase 1 to Phase 4 will expose to
noise impact.
4.4.3.7 The direct mitigation measures are discussed in Section 4.4.4. With
the implementation of all direct mitigation measures, all remaining
planned NSRs would comply with the respective noise criteria.
4.4.4 Mitigation of Road Traffic Noise Impact
Direct Mitigation Measures
4.4.4.1 As discussed in Section 4.4.3, mitigations measures are required for a
number of planned NSRs. It should be noted that the design and layout
of proposed residential development has proactively adopted self-
protecting blocks for the first layer of residential blocks facing NLH to
provide noise screening. This helps avoid traffic noise impacts from
NLH as much as practicable at the outset. It has been demonstrated
that the noise impacts can be mitigated to an acceptable level by
employing a package of mitigation measures for road traffic noise
including acoustic windows and arrangement of noise tolerant use in
some buildings.
4.4.4.2 Provision of acoustic windows could provide up to 8 dB(A) noise
attenuation according to EPD’s website. For conservative purpose,
only 5 dB(A) noise attenuation provided by acoustic windows has been
adopted in this EIA. Specially designed acoustic windows could be
considered during detail design stage to aim at achieving 8 dB(A) noise
attenuation.
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4.4.4.3 A summary of proposed mitigation measures for road traffic noise is
listed in Table 4.15. Figure 4.6 shows the extent and location of
proposed mitigation measures for road traffic noise and rail noise.
Table 4.15 Locations of proposed mitigation measures for road traffic noise
Phase NAP[1] Type of Mitigation
Measures[2]
Phase 1
103 Acoustic windows
110 Acoustic windows
113 Acoustic windows
143 Acoustic windows
147 Acoustic windows
801 Acoustic windows
Phase 2 802 Acoustic windows
Phase 3 601 Noise tolerant use[3]
Phase 4
408 Acoustic windows
409 Acoustic windows
420 Acoustic windows
421 Acoustic windows
422 Acoustic windows
701 Noise tolerant use[3]
Notes:
[1] NAP – Noise Assessment Point
[2] Details are shown in Figure 4.6.
[3] Noise tolerant use is proposed to be arranged in the internal layout at the facade facing the
NLH. Details are shown in Figure 4.6.
4.4.4.4 Results for mitigated case are shown in Table 4.16 and details could
be found in Appendix 4.15. It can be seen that with the provision of
the recommended mitigation measures, the traffic noise levels at all
existing and planned NSRs will comply with the respective criterion.
Table 4.16a Predicted road traffic noise impact at existing and planned NSRs under mitigated scenario (Phase 1)
ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3]
Criteria,
L10 (1hr)
dB(A)
Noise
Impact,
L10 (1hr)
dB(A)[4]
Mitigation
Measures
Required
[Y/N]
Planned NSRs
Phase 1
101 R 17 101-01, 101-03 to 101-06 70 <55 - 67 N
103 R 18 103-01, 103-03 to 103-06 70 <55 - 70 N
104 R 18 104-01 to 104-04 70 <55 N
107 R 18 107-01, 107-03 to 107-06 70 <55 - 69 N
108 R 18 108-01, 108-03 to 108-06 70 <55 - 68 N
110 R 18 110-01, 110-03 to 110-06 70 <55 - 70 N
111 R 19 111-01 to 111-04 70 <55 N
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Page 4-50
ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3]
Criteria,
L10 (1hr)
dB(A)
Noise
Impact,
L10 (1hr)
dB(A)[4]
Mitigation
Measures
Required
[Y/N]
113 R 19 113-01, 113-03 to 113-06 70 <55 - 70 N
114 R 19 114-01 to 114-04 70 <55 N
116 R 19 116-01 to 116-04 70 <55 N
117 R 19 117-01 to 117-04 70 <55 N
118 R 19 118-01 to 118-04 70 <55 N
119 R 15 119-01, 119-03 to 119-06 70 <55 - 63 N
122 R 16 122-01, 122-03 to 122-06 70 <55 - 69 N
123 R 16 123-01, 123-03 to 123-06 70 <55 - 69 N
125 R 16 125-01, 125-03 to 125-06 70 <55 - 64 N
126 R 16 126-01, 126-03 to 126-06 70 <55 - 70 N
129 R 16 129-01, 129-03 to 129-06 70 <55 - 67 N
130 R 17 130-01, 130-03 to 130-06 70 <55 - 65 N
132 R 17 132-01, 132-03 to 132-06 70 <55 - 69 N
133 R 17 133-01, 133-03 to 133-06 70 <55 - 70 N
135 R 17 135-01, 135-03 to 135-06 70 <55 - 69 N
136 R 19 136-01 to 136-04 70 <55 N
139 R 20 139-01 to 139-04 70 <55 N
140 R 20 140-01 to 140-04 70 <55 N
142 R 20 142-01, 142-03 to 142-06 70 <55 - 70 N
143 R 20 143-01, 143-03 to 143-06 70 57 - 67 N
146 R 21 146-01 to 146-04 70 <55 N
147 R 21 147-01, 147-03 to 147-06 70 <55 - 70 N
149 R 21 149-01 to 149-04 70 <55 N
801 E 1 801-01 65 62 N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] R – Residential Premises, E – Educational Institutions
[3] NAP – Noise Assessment Point
[4] For the noise sensitive receivers with the application of acoustic windows, the predicted noise
levels are the equivalent noise levels at 1m from the external facade after accounting the
reduction in noise levels inside the flat offered by the propose acoustic window.
Table 4.16b Predicted road traffic noise impact at existing and planned NSRs under mitigated scenario (Phase 1 to Phase 2)
ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3]
Criteria,
L10 (1hr)
dB(A)
Noise
Impact,
L10 (1hr)
dB(A)[4]
Mitigation
Measures
Required
[Y/N]
Planned NSRs
Phase 1
101 R 17 101-01, 101-03 to 101-06 70 <55 - 67 N
103 R 18 103-01, 103-03 to 103-06 70 <55 - 70 N
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ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3]
Criteria,
L10 (1hr)
dB(A)
Noise
Impact,
L10 (1hr)
dB(A)[4]
Mitigation
Measures
Required
[Y/N]
104 R 18 104-01 to 104-04 70 <55 N
107 R 18 107-01, 107-03 to 107-06 70 <55 - 69 N
108 R 18 108-01, 108-03 to 108-06 70 <55 - 68 N
110 R 18 110-01, 110-03 to 110-06 70 <55 - 70 N
111 R 19 111-01 to 111-04 70 <55 N
113 R 19 113-01, 113-03 to 113-06 70 <55 - 70 N
114 R 19 114-01 to 114-04 70 <55 N
116 R 19 116-01 to 116-04 70 <55 N
117 R 19 117-01 to 117-04 70 <55 N
118 R 19 118-01 to 118-04 70 <55 N
119 R 15 119-01, 119-03 to 119-06 70 <55 - 63 N
122 R 16 122-01, 122-03 to 122-06 70 <55 - 69 N
123 R 16 123-01, 123-03 to 123-06 70 <55 - 69 N
125 R 16 125-01, 125-03 to 125-06 70 <55 - 64 N
126 R 16 126-01, 126-03 to 126-06 70 <55 - 70 N
129 R 16 129-01, 129-03 to 129-06 70 <55 - 67 N
130 R 17 130-01, 130-03 to 130-06 70 <55 - 65 N
132 R 17 132-01, 132-03 to 132-06 70 <55 - 69 N
133 R 17 133-01, 133-03 to 133-06 70 <55 - 70 N
135 R 17 135-01, 135-03 to 135-06 70 <55 - 69 N
136 R 19 136-01 to 136-04 70 <55 N
139 R 20 139-01 to 139-04 70 <55 N
140 R 20 140-01 to 140-04 70 <55 N
142 R 20 142-01, 142-03 to 142-06 70 <55 - 70 N
143 R 20 143-01, 143-03 to 143-06 70 57 - 67 N
146 R 21 146-01 to 146-04 70 <55 N
147 R 21 147-01, 147-03 to 147-06 70 <55 - 70 N
149 R 21 149-01 to 149-04 70 <55 N
801 E 1 801-01 65 62 N
Phase 1 to Phase 2
201 R 16 201-01 to 201-03 70 55 - 67 N
206 R 16 206-01 70 <55 - 64 N
211 R 17 211-01 70 56 - 70 N
212 R 17 212-01 to 212-02 70 <55 - 67 N
215 R 18 215-03 70 <55 - 63 N
501 E 7 501-01 to 501-05 65 <55 - 65 N
802 E 1 802-01 to 802-02 65 61 - 62 N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] R – Residential Premises, E – Educational Institutions
[3] NAP – Noise Assessment Point
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[4] For the noise sensitive receivers with the application of acoustic windows, the predicted noise
levels are the equivalent noise levels at 1m from the external facade after accounting the
reduction in noise levels inside the flat offered by the propose acoustic window.
Table 4.16c Predicted road traffic noise impact at existing and planned NSRs under mitigated scenario (Phase 1 to Phase 3)
ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3]
Criteria,
L10 (1hr)
dB(A)
Noise
Impact,
L10 (1hr)
dB(A)[4]
Mitigation
Measures
Required
[Y/N]
Planned NSRs
Phase 1
101 R 17 101-01, 101-03 to 101-06 70 <55 - 67 N
103 R 18 103-01, 103-03 to 103-06 70 <55 - 70 N
104 R 18 104-01 to 104-04 70 <55 N
107 R 18 107-01, 107-03 to 107-06 70 <55 - 69 N
108 R 18 108-01, 108-03 to 108-06 70 <55 - 68 N
110 R 18 110-01, 110-03 to 110-06 70 <55 - 70 N
111 R 19 111-01 to 111-04 70 <55 N
113 R 19 113-01, 113-03 to 113-06 70 <55 - 70 N
114 R 19 114-01 to 114-04 70 <55 N
116 R 19 116-01 to 116-04 70 <55 N
117 R 19 117-01 to 117-04 70 <55 N
118 R 19 118-01 to 118-04 70 <55 N
119 R 15 119-01, 119-03 to 119-06 70 <55 - 63 N
122 R 16 122-01, 122-03 to 122-06 70 <55 - 69 N
123 R 16 123-01, 123-03 to 123-06 70 <55 - 69 N
125 R 16 125-01, 125-03 to 125-06 70 <55 - 64 N
126 R 16 126-01, 126-03 to 126-06 70 <55 - 70 N
129 R 16 129-01, 129-03 to 129-06 70 <55 - 67 N
130 R 17 130-01, 130-03 to 130-06 70 <55 - 65 N
132 R 17 132-01, 132-03 to 132-06 70 <55 - 69 N
133 R 17 133-01, 133-03 to 133-06 70 <55 - 70 N
135 R 17 135-01, 135-03 to 135-06 70 <55 - 69 N
136 R 19 136-01 to 136-04 70 <55 N
139 R 20 139-01 to 139-04 70 <55 N
140 R 20 140-01 to 140-04 70 <55 N
142 R 20 142-01, 142-03 to 142-06 70 <55 - 70 N
143 R 20 143-01, 143-03 to 143-06 70 57 - 67 N
146 R 21 146-01 to 146-04 70 <55 N
147 R 21 147-01, 147-03 to 147-06 70 <55 - 70 N
149 R 21 149-01 to 149-04 70 <55 N
801 E 1 801-01 65 62 N
Phase 1 to Phase 2
201 R 16 201-01 to 201-03 70 55 - 67 N
206 R 16 206-01 70 <55 - 64 N
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ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3]
Criteria,
L10 (1hr)
dB(A)
Noise
Impact,
L10 (1hr)
dB(A)[4]
Mitigation
Measures
Required
[Y/N]
211 R 17 211-01 70 56 - 70 N
212 R 17 212-01 to 212-02 70 <55 - 67 N
215 R 18 215-03 70 <55 - 62 N
501 E 7 501-01 to 501-05 65 <55 - 65 N
802 E 1 802-01 to 802-02 65 61 - 62 N
Phase 1 to Phase 3
301 R 19 301-01 70 <55 - 66 N
303 R 19 303-01 70 55 - 67 N
304 R 19 304-01 70 <55 - 65 N
305 R 19 305-01 70 <55 - 66 N
307 R 20 307-01 to 307-04 70 56 - 70 N
308 R 21 308-01 70 59 - 67 N
309 R 22 309-01 70 62 - 68 N
310 R 18 310-01 70 <55 - 66 N
311 R 18 311-01 70 <55 - 67 N
312 R 18 312-01 70 <55 - 66 N
601 E 7 601-01 to 601-09 65 <55 - 65 N
803 E 1 803-01 65 <55 N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] R – Residential Premises, E – Educational Institutions
[3] NAP – Noise Assessment Point
[4] For the noise sensitive receivers with the application of acoustic windows, the predicted noise
levels are the equivalent noise levels at 1m from the external facade after accounting the
reduction in noise levels inside the flat offered by the propose acoustic window.
Table 4.16d Predicted road traffic noise impact at existing and planned NSRs under mitigated scenario (full occupation after Phase 4)
ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3]
Criteria,
L10 (1hr)
dB(A)
Noise
Impact,
L10 (1hr)
dB(A)[4]
Mitigation
Measures
Required
[Y/N]
Planned NSRs
Phase 1
101 R 17 101-01, 101-03 to 101-06 70 <55 - 67 N
103 R 18 103-01, 103-03 to 103-06 70 <55 - 70 N
104 R 18 104-01 to 104-04 70 <55 N
107 R 18 107-01, 107-03 to 107-06 70 <55 - 69 N
108 R 18 108-01, 108-03 to 108-06 70 <55 - 68 N
110 R 18 110-01, 110-03 to 110-06 70 <55 - 70 N
111 R 19 111-01 to 111-04 70 <55 N
113 R 19 113-01, 113-03 to 113-06 70 <55 - 70 N
114 R 19 114-01 to 114-04 70 <55 N
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Page 4-54
ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3]
Criteria,
L10 (1hr)
dB(A)
Noise
Impact,
L10 (1hr)
dB(A)[4]
Mitigation
Measures
Required
[Y/N]
116 R 19 116-01 to 116-04 70 <55 N
117 R 19 117-01 to 117-04 70 <55 N
118 R 19 118-01 to 118-04 70 <55 N
119 R 15 119-01, 119-03 to 119-06 70 <55 - 63 N
122 R 16 122-01, 122-03 to 122-06 70 <55 - 69 N
123 R 16 123-01, 123-03 to 123-06 70 <55 - 69 N
125 R 16 125-01, 125-03 to 125-06 70 <55 - 64 N
126 R 16 126-01, 126-03 to 126-06 70 <55 - 70 N
129 R 16 129-01, 129-03 to 129-06 70 <55 - 67 N
130 R 17 130-01, 130-03 to 130-06 70 <55 - 65 N
132 R 17 132-01, 132-03 to 132-06 70 <55 - 69 N
133 R 17 133-01, 133-03 to 133-06 70 <55 - 70 N
135 R 17 135-01, 135-03 to 135-06 70 <55 - 69 N
136 R 19 136-01 to 136-04 70 <55 N
139 R 20 139-01 to 139-04 70 <55 N
140 R 20 140-01 to 140-04 70 <55 N
142 R 20 142-01, 142-03 to 142-06 70 <55 - 70 N
143 R 20 143-01, 143-03 to 143-06 70 <55 - 67 N
146 R 21 146-01 to 146-04 70 <55 N
147 R 21 147-01, 147-03 to 147-06 70 <55 - 70 N
149 R 21 149-01 to 149-04 70 <55 N
801 E 1 801-01 65 62 N
Phase 1 to Phase 2
201 R 16 201-01 to 201-03 70 55 - 67 N
206 R 16 206-01 70 <55 - 64 N
211 R 17 211-01 70 56 - 70 N
212 R 17 212-01 to 212-02 70 <55 - 67 N
215 R 18 215-03 70 <55 - 62 N
501 E 7 501-01 to 501-05 65 <55 - 65 N
802 E 1 802-01 to 802-02 65 61 - 62 N
Phase 1 to Phase 3
301 R 19 301-01 70 <55 - 66 N
303 R 19 303-01 70 55 - 67 N
304 R 19 304-01 70 <55 - 65 N
305 R 19 305-01 70 <55 - 66 N
307 R 20 307-01 to 307-04 70 <55 - 69 N
308 R 21 308-01 70 <55 - 63 N
309 R 22 309-01 70 <55 - 63 N
310 R 18 310-01 70 <55 - 66 N
311 R 18 311-01 70 <55 - 66 N
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ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3]
Criteria,
L10 (1hr)
dB(A)
Noise
Impact,
L10 (1hr)
dB(A)[4]
Mitigation
Measures
Required
[Y/N]
312 R 18 312-01 70 <55 - 66 N
601 E 7 601-01 to 601-09 65 <55 - 65 N
803 E 1 803-01 65 <55 N
Phase 1 to Phase 4
401 R 21 401-01 to 401-04 70 <55 N
403 R 21 403-01 to 403-04 70 <55 N
404 R 22 404-01 to 404-04 70 <55 - 56 N
407 R 22 407-01 to 407-04 70 <55 N
408 R 20 408-02 to 408-18 70 <55 - 70 N
409 R 20 409-01 to 409-18 70 <55 - 70 N
414 R 21 414-01 70 55 - 68 N
415 R 21 415-01 to 415-02 70 <55 - 69 N
419 R 21 419-01 to 419-13 70 <55 - 70 N
420 R 22 420-01 to 420-19 70 <55 - 70 N
421 R 22 421-01 to 421-17 70 <55 - 69 N
422 R 22 422-01 to 422-12 70 <55 - 70 N
701 E 7 701-01 to 701-08 65 <55 - 64 N
804 E 1 804-01 65 <55 N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] R – Residential Premises, E – Educational Institutions
[3] NAP – Noise Assessment Point
[4] For the noise sensitive receivers with the application of acoustic windows, the predicted noise
levels are the equivalent noise levels at 1m from the external facade after accounting the
reduction in noise levels inside the flat offered by the propose acoustic window.
4.4.4.5 With the implementation of mitigation measures, the total number of
dwellings that will be benefitted and protected has been calculated. It
is predicted that a total of about, about 200 dwellings and 5 classrooms
for Phase 1, about 200 dwellings and 15 classrooms for Phase 1 to
Phase 2, about 200 dwellings and 35 classrooms for Phase 1 to Phase
3 and about 400 dwellings and 55 classrooms for Phase 1 to Phase 4
will be benefitted and protected. There would be no dwellings and
classrooms that will be exposed to noise impact exceeding the criteria
set in Annex 5 in the EIAO-TM.
4.4.4.6 Table 4.15 has presented the packages of noise mitigation measures
that are recommended for the current building design. Nevertheless,
depends on the evaluation during subsequent detailed design, the
future developers may wish to explore any alternative approaches
including but not limited to acoustic balconies, altering building forms,
etc. to address road traffic noise issues as appropriate. In such case,
submission of a Noise Impact Assessment may be required under the
planning/ land lease/ building plan or other statutory mechanism so as
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to demonstrate that the noise criteria can still be achieved by adopting
their packages of mitigation measures.
Indirect Mitigation Measures
4.4.4.7 Since direct mitigation measures are sufficient to protect the dwellings
to achieve compliance of relevant criteria, indirect mitigation measures
are not required.
4.4.5 Evaluation of Residual Road Traffic Noise Impact
4.4.5.1 According to Section 4.4.4, adverse residual road traffic noise impacts
are not anticipated.
4.5 Fixed Noise Sources Impact Assessment
4.5.1 Fixed Noise Sources Impact Assessment Methodology
4.5.1.1 Fixed noise assessment has been conducted based on the following
procedures:
Determine the assessment area;
Identify and locate representative NSRs that may be affected by
the noise sources;
Determine the noise criteria for both daytime and night-time;
Use standard acoustic principle for attenuation and directivity;
Adopt correction of tonality, impulsiveness and intermittency as
stipulated in IND-TM;
Calculate the noise impacts using assumed plant inventories and
utilisation schedule, if available; and
Include cumulative impacts.
4.5.1.2 The assessment has been based on the best available information,
which includes location of the planned fixed noise sources and their
associated maximum sound power levels (SWLs).
4.5.2 Identification of Fixed Noise Sources Impact
Identification of Assessment Area and Noise Sensitive Receivers
4.5.2.1 The assessment area is: i) 300m assessment area for planned NSRs
affected by planned and existing fixed noise sources; ii) 300m
assessment area for planned fixed noise sources. Agreement with the
Director on the assessment area has been obtained prior to the
commencement of the assessment.
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4.5.2.2 For operational fixed noise assessment, representative NSRs locations
have been selected from Table 4.8 and are summarised in Table 4.17
below. They are also illustrated in Figure 4.7. Agreement with the
Director on noise assessment points has been obtained prior to the
commencement of the assessment.
Table 4.17 Representative NSRs for fixed noise assessment
ID[1] Uses[2] No. of Domestic Storey NAP[3] ASR[4]
Existing NSR
N01 C N/A[5] N01-01 N/A[5]
Planned NSRs
Phase 1a/ 1b/ 1c
103 R 18 103-01 C
108 R 18 108-06 C
110 R 18 110-01 C
113 R 19 113-01 C
116 R 19 116-01 C
119 R 15 119-01 B
119 R 15 119-06 B
123 R 16 123-01 C
136 R 19 136-04 C
139 R 20 139-01 C
142 R 20 142-06 C
143 R 20 143-06 C
149 R 21 149-03 C
149 R 21 149-04 C
801 E 1 801-01 C
Phase 1a to 2
103 R 18 103-01 C
108 R 18 108-06 B
110 R 18 110-01 C
113 R 19 113-01 C
116 R 19 116-01 B
119 R 15 119-01 B
119 R 15 119-06 B
123 R 16 123-01 C
136 R 19 136-04 B
139 R 20 139-01 B
142 R 20 142-06 C
143 R 20 143-06 C
149 R 21 149-03 C
149 R 21 149-04 C
201 R 16 201-04 B
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ID[1] Uses[2] No. of Domestic Storey NAP[3] ASR[4]
202 R 16 202-01 B
203 R 16 203-01 B
208 R 18 208-01 B
216 R 19 216-01 B
218 R 19 218-01 B
801 E 1 801-01 C
802 E 1 802-02 C
Phase 1a to 3
103 R 18 103-01 C
108 R 18 108-06 B
110 R 18 110-01 C
113 R 19 113-01 C
116 R 19 116-01 B
119 R 15 119-01 B
119 R 15 119-06 B
123 R 16 123-01 C
136 R 19 136-04 B
139 R 20 139-01 B
142 R 20 142-06 B
143 R 20 143-06 B
149 R 21 149-03 B
149 R 21 149-04 B
201 R 16 201-04 B
202 R 16 202-01 B
203 R 16 203-01 B
208 R 18 208-01 B
216 R 19 216-01 B
218 R 19 218-01 B
308 R 21 308-02 B
309 R 22 309-03 B
313 R 20 313-01 B
318 R 21 318-01 B
801 E 1 801-01 C
802 E 1 802-02 C
Phase 1a to 4
103 R 18 103-01 C
108 R 18 108-06 B
110 R 18 110-01 C
113 R 19 113-01 C
116 R 19 116-01 B
119 R 15 119-01 B
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ID[1] Uses[2] No. of Domestic Storey NAP[3] ASR[4]
119 R 15 119-06 B
123 R 16 123-01 C
136 R 19 136-04 B
139 R 20 139-01 B
142 R 20 142-06 B
143 R 20 143-06 B
149 R 21 149-03 B
149 R 21 149-04 B
201 R 16 201-04 B
202 R 16 202-01 B
203 R 16 203-01 B
208 R 18 208-01 B
216 R 19 216-01 B
218 R 19 218-01 B
308 R 21 308-02 B
309 R 22 309-03 B
313 R 20 313-01 B
318 R 21 318-01 B
407 R 22 407-01 B
411 R 22 411-01 B
413 R 22 413-01 B
417 R 21 417-01 B
419 R 21 419-14 B
421 R 22 421-18 B
422 R 22 422-07 C
801 E 1 801-01 C
802 E 1 802-02 C
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] R – Residential Premises, C – Country Parks, E – Educational Institutions.
[3] NAP – Noise Assessment Point.
[4] Details on the determination of Area Sensitivity Rating are shown in Appendix 4.1b.
[5] N/A – Not Applicable, In accordance with Annex 13 of the EIAO-TM, country parks are
considered to be a NSR. However, the EIAO-TM and IND-TM do not provide a specific noise
limits for Country Parks.
4.5.2.3 Prevailing noise measurements have been conducted for determination
of the fixed noise criteria for planned fixed noise sources as shown in
Table 4.17a below. Details refer to Section 4.2.4 above.
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Table 4.17a Noise criteria for fixed noise assessment
NAP Time
Period ASR
ANL-5,
dB(A) [A]
BNL[1],
dB(A) [B]
Reference
NM[2]
Criteria,
dB(A)
Min. of
[A] & [B]
Phase 1a/ 1b/ 1c
103-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
108-06
Day &
Evening C 65 71
M03 65
Night 55 64 55
110-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
113-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
116-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
119-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
119-06
Day &
Evening B 60 61
M01 60
Night 50 59 50
123-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
136-04
Day &
Evening C 65 71
M03 65
Night 55 64 55
139-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
142-06
Day &
Evening C 65 71
M03 65
Night 55 64 55
143-06
Day &
Evening C 65 71
M03 65
Night 55 64 55
149-03
Day &
Evening C 65 71
M03 65
Night 55 64 55
149-04
Day &
Evening C 65 71
M03 65
Night 55 64 55
801-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
Phase 1a to 2
103-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
108-06 Day &
Evening B 60 71 M03 60
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NAP Time
Period ASR
ANL-5,
dB(A) [A]
BNL[1],
dB(A) [B]
Reference
NM[2]
Criteria,
dB(A)
Min. of
[A] & [B]
Night 50 64 50
110-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
113-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
116-01
Day &
Evening B 60 71
M03 60
Night 50 64 50
119-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
119-06
Day &
Evening B 60 61
M01 60
Night 50 59 50
123-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
136-04
Day &
Evening B 60 71
M03 60
Night 50 64 50
139-01
Day &
Evening B 60 71
M03 60
Night 50 64 50
142-06
Day &
Evening C 65 71
M03 65
Night 55 64 55
143-06
Day &
Evening C 65 71
M03 65
Night 55 64 55
149-03
Day &
Evening C 65 71
M03 65
Night 55 64 55
149-04
Day &
Evening C 65 71
M03 65
Night 55 64 55
201-04
Day &
Evening B 60 61
M01 60
Night 50 59 50
202-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
203-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
208-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
216-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
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NAP Time
Period ASR
ANL-5,
dB(A) [A]
BNL[1],
dB(A) [B]
Reference
NM[2]
Criteria,
dB(A)
Min. of
[A] & [B]
218-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
801-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
802-02
Day &
Evening C 65 71
M03 65
Night 55 64 55
Phase 1a to 3
103-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
108-06
Day &
Evening B 60 71
M03 60
Night 50 64 50
110-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
113-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
116-01
Day &
Evening B 60 71
M03 60
Night 50 64 50
119-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
119-06
Day &
Evening B 60 61
M01 60
Night 50 59 50
123-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
136-04
Day &
Evening B 60 71
M03 60
Night 50 64 50
139-01
Day &
Evening B 60 71
M03 60
Night 50 64 50
142-06
Day &
Evening B 60 71
M03 60
Night 50 64 50
143-06
Day &
Evening B 60 71
M03 60
Night 50 64 50
149-03
Day &
Evening B 60 71
M03 60
Night 50 64 50
149-04
Day &
Evening B 60 71
M03 60
Night 50 64 50
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NAP Time
Period ASR
ANL-5,
dB(A) [A]
BNL[1],
dB(A) [B]
Reference
NM[2]
Criteria,
dB(A)
Min. of
[A] & [B]
201-04
Day &
Evening B 60 61
M01 60
Night 50 59 50
202-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
203-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
208-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
216-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
218-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
308-02
Day &
Evening B 60 61
M01 60
Night 50 59 50
309-03
Day &
Evening B 60 61
M01 60
Night 50 59 50
313-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
318-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
801-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
802-02
Day &
Evening C 65 71
M03 65
Night 55 64 55
Phase 1a to 4
103-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
108-06
Day &
Evening B 60 71
M03 60
Night 50 64 50
110-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
113-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
116-01
Day &
Evening B 60 71
M03 60
Night 50 64 50
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NAP Time
Period ASR
ANL-5,
dB(A) [A]
BNL[1],
dB(A) [B]
Reference
NM[2]
Criteria,
dB(A)
Min. of
[A] & [B]
119-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
119-06
Day &
Evening B 60 61
M01 60
Night 50 59 50
123-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
136-04
Day &
Evening C 65 71
M03 65
Night 55 64 55
139-01
Day &
Evening B 60 71
M03 60
Night 50 64 50
142-06
Day &
Evening B 60 71
M03 60
Night 50 64 50
143-06
Day &
Evening B 60 71
M03 60
Night 50 64 50
149-03
Day &
Evening B 60 71
M03 60
Night 50 64 50
149-04
Day &
Evening B 60 71
M03 60
Night 50 64 50
201-04
Day &
Evening B 60 61
M01 60
Night 50 59 50
202-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
203-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
208-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
216-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
218-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
308-02
Day &
Evening B 60 61
M01 60
Night 50 59 50
309-03
Day &
Evening B 60 61
M01 60
Night 50 59 50
313-01 Day &
Evening B 60 61 M01 60
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NAP Time
Period ASR
ANL-5,
dB(A) [A]
BNL[1],
dB(A) [B]
Reference
NM[2]
Criteria,
dB(A)
Min. of
[A] & [B]
Night 50 59 50
318-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
407-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
411-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
413-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
417-01
Day &
Evening B 60 61
M01 60
Night 50 59 50
419-14
Day &
Evening B 60 61
M01 60
Night 50 59 50
421-18
Day &
Evening B 60 61
M01 60
Night 50 59 50
422-07
Day &
Evening C 65 71
M03 65
Night 55 64 55
801-01
Day &
Evening C 65 71
M03 65
Night 55 64 55
802-02
Day &
Evening C 65 71
M03 65
Night 55 64 55
Notes:
[1] Prevailing background noise level.
[2] Prevailing noise measurement location.
Inventory of Noise Sources
4.5.2.4 Key existing and planned noise sources have been discussed in Section
4.2.3. A summary of the fixed noise source affecting the project area
is given below and illustrated in Figure 4.1. The inventory of noise
source has been confirmed with the Project Proponent.
Existing Fixed Noise Sources
SHD (e.g. ventilation louver at existing depot, rail grinding
activity, train washing activity, repairing workshops).
Planned Fixed Noise Sources
SPS;
PTI;
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Ventilation louvers at podium;
Reprovisioned SHD (e.g. fixed plants including ventilation
louvers); and
SHO (i.e. ventilation louvers).
4.5.3 Prediction and Evaluation of Fixed Noise Sources Impact
Scenarios
4.5.3.1 The fixed noise impact assessment of unmitigated scenario and
mitigated scenario of worst operation mode representing the maximum
noise emission is conducted with respect to the criteria set in Annex 5
of the TM. Validity of the operation modes have been confirmed with
the Project Proponent. Agreement with the Director on the operation
modes has been obtained prior to the commencement of the assessment.
Prediction of Noise Impact
Existing SHD
4.5.3.2 While potential fixed noise impacts from the existing SHD (e.g.
ventilation louver at existing depot, rail grinding activity, train
washing activity, repairing workshops) during depot replanning will
be addressed the Railway EIA, which would be submitted separately
for approval under EIAO, fixed noise impacts have therefore been
addressed in this EIA report as well.
SPS/ PTI/ Ventilation Louvers at Podium
4.5.3.3 Sewage from the proposed development will be delivered to
SHWSTW for further processing with utilities connecting to existing
SHWSTW. Sewage pumping stations within each phase will be fully
enclosed within podium with exhaust / intake louvers. In addition, one
ultimate sewage pumping station will be located at northeast of the
proposed development. It will be open air until the completion of
Phase 4 construction. By the end of Phase 4 construction, it will be
fully enclosed structure with exhaust / intake louvers. Potential
construction and fixed noise impacts have therefore been addressed in
this EIA report.
4.5.3.4 A PTI is proposed to satisfy the transport demand for future
development(s) in the surrounding area. Key noise generating sources
inside PTI usually include ventilation fans, idling engine and
manoeuvring vehicles, etc. However, the PTI would be enclosed
within the proposed podium underneath the proposed development,
and the location of ingress and egress is designed with no-line-of-sight
at the noise sensitive use. However, the potential fixed noise impacts
from ventilation fans have therefore been addressed in this EIA report.
4.5.3.5 Commercial uses, kindergartens and utility plant rooms will be
enclosed inside podium. Mechanical plant such as chillers and pumps
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will be located inside plant rooms of podium and hence mechanical
ventilation is required. The potential construction and fixed noise
impacts from the ventilation louvers have therefore been addressed in
this EIA report.
4.5.3.6 The potential fixed noise impacts from the SPS, exhaust/ intake
louvers as well as other fixed plant within the site boundary have been
included in this assessment. Analysis has been conducted based on the
best available information on the location of the planned fixed noise
sources and their associated maximum allowable SWLs. The table
below shows the maximum allowable SWL. The locations of the
planned noise sources are shown in Figure 4.7b.
Table 4.18 Summary of maximum allowable SWL for the SPS and louvers, within the site boundary
Plant Item Maximum Allowable SWL[1], dB(A)
Louvers 92/82
SPS 102/92
Notes:
[1] The maximum allowable SWL are presented for [Daytime maximum allowable
SWL/ Nighttime maximum allowable SWL].
4.5.3.7 Based on site observation for the existing noise sources (i.e. louver)
inside SHD, intermittency and impulsiveness are not expected at near
field. Consider the nature / function of planned louvers for topside
development, corrections of intermittency and impulsiveness are not
applied in current fixed noise assessment. However, tonality is
observed at near field but not at far field. A 3dB(A) tonality correction
have therefore been applied in the noise analysis for conservative
purpose. In addition, a 3dB(A) facade correction has also been applied
in the noise analysis for conservative purpose.
4.5.3.8 In the case that the noise sources falls within the view angle of the NSR
but with no direct line of sight to the noise source to the location of
noise source under the NSR or the noise source is below the transfer
plate slab of the planned NSRs, a 10dB(A) barrier attenuation has been
applied in the calculation. The barrier attenuation has been estimated
based on worst case scenario and frequency of noise sources of
concern obtained through on-site measurement inside SHD. In
addition, the barrier attenuation has been estimated based on ISO 9613
Acoustics – Attenuation of sound during propagation outdoors – Part
2: General method of calculation. Section drawing is provided in
Appendix 4.16. Given that estimated barrier attenuation is higher than
10dB(A), 10dB(A) barrier attenuation has been adopted for
conservative purpose.
4.5.3.9 Typically, a noise reduction of 10dB(A) and 20dB(A) is possible with
the application of silencer installation and special acoustic enclosure
at various units. These predicted maximum allowable SWL are in
similar range as those predicted in other EIA report (e.g. Approved
EIA reports for TCNTE (AEIAR-196/2016) and North East New
Territories New Development Areas (AEIAR-175/2013)).
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4.5.3.10 The Contractor shall install acoustic silencers, noise barrier or acoustic
enclosure as appropriate to ensure the specified maximum SWLs as
shown in Table 4.18 will not be exceeded. The Contractor shall also
take into account the latest available information at time of detail
design to review and update the maximum allowable SWL as
appropriate.
SHD Replanning Works and Reprovisioned SHD
4.5.3.11 While potential fixed noise impacts (e.g. fixed plants including
ventilation louvers which will be operated above the concrete podium)
will be addressed in the Railway EIA, which would be submitted
separately for approval under EIAO, fixed noise impacts have
therefore been addressed in this EIA report as well. The locations of
the planned and existing noise sources are shown in Figure 4.7b. The
maximum allowable SWL for the planned louvers is summarised in
Table 4.18a.
Table 4.18a Summary of maximum allowable SWL for the planned ventilation louvers for the SHO and Reprovisioned SHD
Louver Item[1] Maximum Allowable SWL[2], dB(A)
LV-1
80/75 LV-2
LV-3 75/75
LV-4 75/80
LV-5 80/80
LV-6 85/80
LV-7
90/80
LV-8
LV-9
LV-10
LV-11
LV-12
LV-13
LV-14
LV-15
LV-16
LV-17
LV-18
100/90 LV-19
LV-20
LV-21
95/85 LV-22
LV-23
LV-24
90/80 LV-25
LV-26
LV-27 85/75
LV-28
LV-29 90/80
LV-30 110/100
LV-31 105/95
LV-32
100/90 LV-33
LV-34
LV-35
LV-36 95/85
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Louver Item[1] Maximum Allowable SWL[2], dB(A)
LV-37
LV-38
LV-39
LV-40
LV-41 100/90
LV-42
95/85
LV-43
LV-44
LV-45
LV-46
LV-47
LV-48
LV-49
LV-50
100/90
LV-51
LV-52
LV-53
LV-54
LV-55
LV-56
LV-57
LV-58
105/95 LV-59
LV-60
LV-61 90/80
LV-62 85/75
LV-63 90/80
LV-64
LV-65 95/85
LV-66
LV-67
90/80 LV-68
LV-69
LV-70
LV-71 100/90
LV-72
CWP Room 100/100
Cooling Tower Plant 102/105
Notes:
[1] Location of planned louvers are extracted from the Railway EIA (ESB-
296/2016).
[2] The maximum allowable SWLs are presented for Daytime maximum allowable
SWL/ Nighttime maximum allowable SWL which are extracted from the
Railway EIA (ESB-296/2016).
SHO
4.5.3.12 While potential fixed noise impacts (e.g. fixed plants including
ventilation louvers which will be operated above the concrete podium)
will be addressed in the Railway EIA, which would be submitted
separately for approval under EIAO, fixed noise impacts have
therefore been addressed in this EIA report as well.
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Cumulative Fixed Noise Impact
4.5.3.13 Detailed cumulative fixed noise calculation is shown in Appendix
4.17 and summary of the cumulative impacts are given in Table 4.19.
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Table 4.19 Predicted fixed noise impact at existing and planned NSRs
ID[1] NAP[2] ASR
Planned Noise Source Only Existing + Planned Noise Source
Max. Predicted
Sound Pressure
Level, dB(A)
Daytime &
Evening/
Night-time Criteria
Leq 30 min dB(A) [3]
Compliance [Y/N]
Max. Predicted
Sound Pressure
Level, dB(A)
Daytime &
Evening/
Night-time Criteria
Leq 30 min dB(A) [3]
Compliance [Y/N]
Existing NSR
N01 N01-01 N/A[4] 59/49[5] N/A[4] - 59/49[5] N/A[4] -
Planned NSRs
Phase 1a/1b/1c
103 103-01 C 61/51 65/55 Y 61/51 70/60 Y
108 108-06 C 57/47 65/55 Y 57/48 70/60 Y
110 110-01 C 57/47 65/55 Y 57/47 70/60 Y
113 113-01 C 57/47 65/55 Y 57/48 70/60 Y
116 116-01 C 56/46 65/55 Y 56/47 70/60 Y
119 119-01 B 57/49 60/50 Y 57/50 65/55 Y
119 119-06 B 57/48 60/50 Y 57/49 65/55 Y
123 123-01 C 61/51 65/55 Y 61/51 70/60 Y
136 136-04 C 57/48 65/55 Y 57/49 70/60 Y
139 139-01 C 59/49 65/55 Y 60/50 70/60 Y
142 142-06 C 58/50 65/55 Y 59/51 70/60 Y
143 143-06 C 58/52 65/55 Y 61/53 70/60 Y
149 149-03 C 58/49 65/55 Y 63/55 70/60 Y
149 149-04 C 56/47 65/55 Y 63/54 70/60 Y
801 801-01 C 61/-[6] 65/55 Y 62/-[6] 70/60 Y
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ID[1] NAP[2] ASR
Planned Noise Source Only Existing + Planned Noise Source
Max. Predicted
Sound Pressure
Level, dB(A)
Daytime &
Evening/
Night-time Criteria
Leq 30 min dB(A) [3]
Compliance [Y/N]
Max. Predicted
Sound Pressure
Level, dB(A)
Daytime &
Evening/
Night-time Criteria
Leq 30 min dB(A) [3]
Compliance [Y/N]
Phase 1a to 2
103 103-01 C 61/51 65/55 Y 61/51 70/60 Y
108 108-06 B 57/47 60/50 Y 57/47 65/55 Y
110 110-01 C 57/47 65/55 Y 57/47 70/60 Y
113 113-01 C 57/47 65/55 Y 57/47 70/60 Y
116 116-01 B 56/46 60/50 Y 56/46 65/55 Y
119 119-01 B 57/50 60/50 Y 57/50 65/55 Y
119 119-06 B 57/49 60/50 Y 57/49 65/55 Y
123 123-01 C 61/51 65/55 Y 61/51 70/60 Y
136 136-04 B 57/47 60/50 Y 57/47 65/55 Y
139 139-01 B 59/49 60/50 Y 59/49 65/55 Y
142 142-06 C 58/48 65/55 Y 59/49 70/60 Y
143 143-06 C 57/47 65/55 Y 61/49 70/60 Y
149 149-03 C 58/48 65/55 Y 63/50 70/60 Y
149 149-04 C 56/46 65/55 Y 63/49 70/60 Y
201 201-04 B 57/48 60/50 Y 57/48 65/55 Y
202 202-01 B 58/48 60/50 Y 58/49 65/55 Y
203 203-01 B 58/48 60/50 Y 58/48 65/55 Y
208 208-01 B 57/47 60/50 Y 57/47 65/55 Y
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ID[1] NAP[2] ASR
Planned Noise Source Only Existing + Planned Noise Source
Max. Predicted
Sound Pressure
Level, dB(A)
Daytime &
Evening/
Night-time Criteria
Leq 30 min dB(A) [3]
Compliance [Y/N]
Max. Predicted
Sound Pressure
Level, dB(A)
Daytime &
Evening/
Night-time Criteria
Leq 30 min dB(A) [3]
Compliance [Y/N]
216 216-01 B 57/47 60/50 Y 57/47 65/55 Y
218 218-01 B 54/46 60/50 Y 54/46 65/55 Y
801 801-01 C 61/-[6] 65/55 Y 63/-[6] 70/60 Y
802 802-02 C 59/-[6] 65/55 Y 59/-[6] 70/60 Y
Phase 1a to 3
103 103-01 C 61/51 65/55 Y 61/51 70/60 Y
108 108-06 B 57/47 60/50 Y 57/47 65/55 Y
110 110-01 C 57/47 65/55 Y 57/47 70/60 Y
113 113-01 C 57/47 65/55 Y 57/47 70/60 Y
116 116-01 B 56/46 60/50 Y 56/46 65/55 Y
119 119-01 B 57/50 60/50 Y 57/50 65/55 Y
119 119-06 B 57/49 60/50 Y 57/49 65/55 Y
123 123-01 C 61/51 65/55 Y 61/51 70/60 Y
136 136-04 B 57/47 60/50 Y 57/47 65/55 Y
139 139-01 B 59/49 60/50 Y 59/49 65/55 Y
142 142-06 B 58/48 60/50 Y 58/48 65/55 Y
143 143-06 B 57/47 60/50 Y 57/47 65/55 Y
149 149-03 B 58/48 60/50 Y 58/48 65/55 Y
149 149-04 B 56/46 60/50 Y 56/46 65/55 Y
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ID[1] NAP[2] ASR
Planned Noise Source Only Existing + Planned Noise Source
Max. Predicted
Sound Pressure
Level, dB(A)
Daytime &
Evening/
Night-time Criteria
Leq 30 min dB(A) [3]
Compliance [Y/N]
Max. Predicted
Sound Pressure
Level, dB(A)
Daytime &
Evening/
Night-time Criteria
Leq 30 min dB(A) [3]
Compliance [Y/N]
201 201-04 B 57/48 60/50 Y 57/48 65/55 Y
202 202-01 B 58/48 60/50 Y 58/49 65/55 Y
203 203-01 B 58/48 60/50 Y 58/48 65/55 Y
208 208-01 B 57/47 60/50 Y 57/47 65/55 Y
216 216-01 B 57/48 60/50 Y 57/48 65/55 Y
218 218-01 B 56/48 60/50 Y 56/48 65/55 Y
308 308-02 B 58/48 60/50 Y 58/48 65/55 Y
309 309-03 B 55/46 60/50 Y 55/46 65/55 Y
313 313-01 B 59/50 60/50 Y 59/50 65/55 Y
318 318-01 B 59/50 60/50 Y 59/50 65/55 Y
801 801-01 C 61/-[6] 65/55 Y 63/-[6] 70/60 Y
802 802-02 C 59/-[6] 65/55 Y 59/-[6] 70/60 Y
Phase 1a to 4
103 103-01 C 61/51 65/55 Y 61/51 70/60 Y
108 108-06 B 57/47 60/50 Y 57/47 65/55 Y
110 110-01 C 57/47 65/55 Y 57/47 70/60 Y
113 113-01 C 57/47 65/55 Y 57/47 70/60 Y
116 116-01 B 56/46 60/50 Y 56/46 65/55 Y
119 119-01 B 57/50 60/50 Y 57/50 65/55 Y
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ID[1] NAP[2] ASR
Planned Noise Source Only Existing + Planned Noise Source
Max. Predicted
Sound Pressure
Level, dB(A)
Daytime &
Evening/
Night-time Criteria
Leq 30 min dB(A) [3]
Compliance [Y/N]
Max. Predicted
Sound Pressure
Level, dB(A)
Daytime &
Evening/
Night-time Criteria
Leq 30 min dB(A) [3]
Compliance [Y/N]
119 119-06 B 57/49 60/50 Y 57/49 65/55 Y
123 123-01 C 61/51 65/55 Y 61/51 70/60 Y
136 136-04 B 57/47 60/50 Y 57/47 65/55 Y
139 139-01 B 59/49 60/50 Y 59/49 65/55 Y
142 142-06 B 58/48 60/50 Y 58/48 65/55 Y
143 143-06 B 57/47 60/50 Y 57/47 65/55 Y
149 149-03 B 57/47 60/50 Y 57/47 65/55 Y
149 149-04 B 55/45 60/50 Y 55/45 65/55 Y
201 201-04 B 57/48 60/50 Y 57/48 65/55 Y
202 202-01 B 58/48 60/50 Y 58/49 65/55 Y
203 203-01 B 58/48 60/50 Y 58/48 65/55 Y
208 208-01 B 57/47 60/50 Y 57/47 65/55 Y
216 216-01 B 57/48 60/50 Y 57/48 65/55 Y
218 218-01 B 56/48 60/50 Y 56/48 65/55 Y
308 308-02 B 58/49 60/50 Y 58/49 65/55 Y
309 309-03 B 56/46 60/50 Y 56/46 65/55 Y
313 313-01 B 59/50 60/50 Y 59/50 65/55 Y
318 318-01 B 59/50 60/50 Y 59/50 65/55 Y
407 407-01 B 53/43 60/50 Y 53/44 65/55 Y
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ID[1] NAP[2] ASR
Planned Noise Source Only Existing + Planned Noise Source
Max. Predicted
Sound Pressure
Level, dB(A)
Daytime &
Evening/
Night-time Criteria
Leq 30 min dB(A) [3]
Compliance [Y/N]
Max. Predicted
Sound Pressure
Level, dB(A)
Daytime &
Evening/
Night-time Criteria
Leq 30 min dB(A) [3]
Compliance [Y/N]
411 411-01 B 58/48 60/50 Y 58/48 65/55 Y
413 413-01 B 58/48 60/50 Y 58/48 65/55 Y
417 417-01 B 58/48 60/50 Y 58/48 65/55 Y
419 419-14 B 58/48 60/50 Y 58/48 65/55 Y
421 421-18 B 59/49 60/50 Y 59/49 65/55 Y
422 422-07 C 58/48 65/55 Y 58/48 70/60 Y
801 801-01 C 61/-[6] 65/55 Y 63/-[6] 70/60 Y
802 802-02 C 59/-[6] 65/55 Y 59/-[6] 70/60 Y
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] NAP – Noise Assessment Point.
[3] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise criterion is proposed based on ANL-5 for planned fixed noise impacts
and ANL for cumulative fixed noise impacts.
[4] N/A – Not Applicable. In accordance with Annex 13 of the EIAO-TM, country parks are considered to be a NSR. However, the EIAO-TM and IND-TM do not provide
a specific noise limits for Country Parks.
[5] Shortest horizontal distances among N01-01 and the noise sources have been used to calculate the predicted sound pressure level.
[6] Only day-time operation for the kindergarten.
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4.5.3.14 As shown in the table above, the cumulative fixed noise impacts are
within the respective noise criterion. The fixed noise impact at Country
Park (N01) is anticipated to be about 59dB(A). Given the transient
nature of visitor using hiking trails, adverse noise impact is not
anticipated.
4.5.4 Mitigation of Fixed Noise Sources Impact
4.5.4.1 For the proposed noise sources which are located near to existing and
planned NSRs, the following tentative noise mitigation measures are
considered:
Mechanical plants should be enclosure inside a building structure;
Proper selection of quiet plant aiming to reduce the tonality at
NSRs;
Installation of silencer/ acoustic enclosure/ acoustic louver for the
exhaust of ventilation system;
Openings of ventilation systems should be located away from
NSRs as far as practicable.
4.5.4.2 The feasibility, practicability, programming and effectiveness of the
above mitigation measures have been reviewed by engineer. As the
fixed noise impacts for planned and existing NSRs will be within
respective noise criteria, there would be no dwellings, classrooms and
other sensitive receivers that will be exposed to noise impact exceeding
the criteria set in Annex 5 in the EIAO-TM.
4.5.4.3 Fixed glazing could be considered as specially provided glazing under
NCO in the later detail design stage. When fixed/rail noise is
transmitted to the NSR primarily through specially provided glazing at
the facade of the building as considered appropriate for reducing the
noise, and the assessment point is a particular internal location
considered appropriate having regard to the normal occupancy of the
building, the proposed fixed glazing will be provided with sufficient
noise insulation performance to meet NCO TM requirement.
4.5.5 Structural-borne Fixed Noise Impact
4.5.5.1 Relevant mitigation measures for structural-borne fixed plant noise
would be installed with reference to Good Practices on Ventilation
System Noise Control to reduce structural-borne noise impact.
Therefore, structural-borne fixed noise impact from the reprovisioned
SHD affecting the SHD Topside Development is not anticipated.
4.5.6 Evaluation of Residual Fixed Noise Sources Impact
4.5.6.1 With the implementation of suitable mitigation measures, fixed noise
impacts are not expected. Adverse residual noise impacts are therefore
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not anticipated. There would be no existing dwellings, classrooms and
other noise sensitive elements that will be exposed to adverse residual
noise impact exceeding the criteria set in Annex 5 in the EIAO-TM.
4.6 Aircraft Noise Impact Assessment
4.6.1 Aircraft Noise Impact Assessment Methodology
4.6.1.1 According to the approved 3RS EIA (AEIAR-185/2014), the NEF
noise contours assessment at year 2021 (interim phase), 2030 (worst
operation mode) and 2032 (full operation mode) have been predicted.
The NEFs as published from the approved 3RS EIA are shown in
Figure 4.2b to Figure 4.2d. The NEF results in the above EIA are
referenced for the consideration of aircraft noise impact at the
proposed development. Agreement with the Director on the
methodology has been obtained prior to the commencement of the
assessment.
4.6.2 Identification of Aircraft Noise Impact
Identification of Assessment Area and Noise Sensitive Receivers
4.6.2.1 For operational aircraft noise assessment, the assessment area includes
all planned NSRs of the Project. Representative NSR locations have
been selected from Table 4.20 and summarised in the table below.
They are also illustrated in Figure 4.8. Agreement with the Director
on the assessment area and noise assessment points has been obtained
prior to the commencement of the assessment.
Table 4.20 Representative NSRs for aircraft noise assessment
ID[1] Uses[2] No. of Domestic Storey NAP[3]
Planned NSRs
119 R 15 119-01
201 R 16 201-03
217 R 19 217-01
309 R 22 309-03
315 R 20 315-01
410 R 22 410-01
422 R 22 422-07
802 E 1 802-02
Notes:
[1] The assessment only includes NSRs which rely on opened windows for
ventilation.
[2] R – Residential Premises, E – Educational Institutions
[3] NAP – Noise Assessment Point.
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4.6.3 Prediction and Evaluation of Aircraft Noise Impact
4.6.3.1 As mentioned in Section 4.1.3.7, NSRs relying on opened windows
for ventilation should be planned beyond the NEF25 contour, except
for offices which should be beyond the NEF30 contour.
4.6.3.2 Based on the NEF results from the approved EIA report for Expansion
of Hong Kong International Airport into a Three-Runway System
(AEIAR-185/2014), the validity of the assumptions, input data, and
operation modes have been confirmed with CAD as stipulated under
paragraph 7.3.3.30 in the approved EIA report. The predicted NEF 25
contours of the 3RS will be away from site boundary in Year 2011
(~260m), Year 2021(~280m), Year 2030 (~1,000m) and Year 2032
(~1,000m). It is noted that the population intake of Phase 1 will be at
Year 2026 – Year 2027, and the separation distance from the predicted
NEF 25 contours will be about ~280m from the site boundary and
440m from Phase 1 development. In addition, the population intake of
Phase 2, Phase 3 and Phase 4 will be at Year 2030, Year 2034 and Year
2035 – Year 2038 respectively, the separation distance from the
predicted NEF 25 contours will be about 1,000m.
4.6.4 Mitigation of Aircraft Noise Impact
Direct Mitigation Measures
4.6.4.1 According to 3RS EIA findings, the predicted NEF 25 contours of the
3RS would be away from the proposed development upon the full
commissioning of the 3RS. Hence, direct mitigation measures are not
required.
Indirect Mitigation Measures
4.6.4.2 According to 3RS EIA findings, the predicted NEF 25 contours of the
3RS would be away from the proposed development upon the full
commissioning of the 3RS. Hence, indirect mitigation measures are
not required. Although not under the statutory requirements, the use of
acoustic insulation in form of well-gasketted window to enhance the
indoor living environment would be reviewed in the detailed design
stage, as mentioned in Section 2.4.3.13 of this report.
4.6.5 Evaluation of Residual Aircraft Noise Impact
4.6.5.1 Adverse aircraft noise impacts are not expected therefore residual
noise impacts are not anticipated.
4.7 Rail Noise Assessment
4.7.1 Rail Noise Impact Assessment Methodology
4.7.1.1 Rail noise impact has been predicted according to “Calculation of
Railway Noise (1995)” by the UK Department of Transport.
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Correction factors and operation details adopted in the rail noise
assessment have been made reference to Railway EIA. Agreement
with the Director on the methodology and computational model have
been obtained prior to the commencement of the assessment.
4.7.1.2 The assessment area for rail noise impact assessment includes those
within 300m from the site boundary.
4.7.2 Identification of Rail Noise Impact
Identification of Assessment Area and Noise Sensitive Receivers
4.7.2.1 For operational rail noise assessment, the assessment area includes
those within 300m from site boundary. Representative NSRs locations
have been selected from Table 4.8 and are summarised in the table
below and illustrated in Figure 4.9. Agreement with the Director on
the assessment area and noise assessment points has been obtained
prior to the commencement of the assessment.
Table 4.25a Representative NSRs for rail noise assessment (Phase 1a population intake after Year 2026)
ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3] ASR[4]
Daytime &
Evening/
Night-time
Criteria
Leq 30 min
dB(A)[5]
Criteria
Lmax
dB(A)[6]
Existing NSRs
N01 C N/A[7] N01-01 N/A[7] N/A[7] N/A[7]
Planned NSRs
Phase 1a
101 R 17 101-01, 101-03 to 101-06 C 70/60 85
103 R 18 103-01, 103-03 to 103-05 C 70/60 85
R 18 103-06 B 65/55 85
104 R 18 104-01 to 104-03 B 65/55 85
R 18 104-04 C 70/60 85
107 R 18 107-01, 107-03 to 107-06 C 70/60 85
108 R 18 108-01, 108-03 to 108-06 C 70/60 85
110 R 18 110-01, 110-03 to 110-06 C 70/60 85
111 R 19 111-01 to 111-04 C 70/60 85
113 R 19 113-01, 113-03 to 113-06 C 70/60 85
114 R 19 114-01 to 114-04 C 70/60 85
116 R 19 116-01 to 116-04 C 70/60 85
117 R 19 117-01 to 117-04 C 70/60 85
118 R 19 118-01 to 118-04 C 70/60 85
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] R – Residential Premises, E – Educational Institutions, C – Country Parks
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[3] NAP – Noise Assessment Point
[4] Details on the determination of Area Sensitivity Rating are shown in Appendix 4.1b.
[5] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise
criterion is proposed according to IND-TM.
[6] Noise criterion between 2300 – 0700 hours according to EIAO-TM.
[7] N/A – Not Applicable, In accordance with Annex 13 of the EIAO-TM, country parks are
considered to be a NSR. However, the EIAO-TM and IND-TM do not provide a specific noise
limits for Country Parks.
Table 4.25b Representative NSRs for rail noise assessment (Phase 1a to Phase 1b population intake after Year 2026)
ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3] ASR[4]
Daytime &
Evening/
Night-time
Criteria
Leq 30 min
dB(A)[5]
Criteria
Lmax
dB(A)[6]
Existing NSRs
N01 C N/A[7] N01-01 N/A[7] N/A[7] N/A[7]
Planned NSRs
Phase 1a
101 R 17 101-01, 101-03, 101-05 C 70/60 85
R 17 101-04 and 101-06 B 65/55 85
103 R 18 103-01, 103-03 to 103-05 C 70/60 85
R 18 103-06 B 65/55 85
104 R 18 104-01 to 104-03 B 65/55 85
R 18 104-04 C 70/60 85
107 R 18 107-01, 107-03 to 107-06 C 70/60 85
108 R 18 108-01, 108-03 to 108-06 C 70/60 85
110 R 18 110-01, 110-03 to 110-06 C 70/60 85
111 R 19 111-01 to 111-04 C 70/60 85
113 R 19 113-01, 113-03 to 113-06 C 70/60 85
114 R 19 114-01 to 114-04 C 70/60 85
116 R 19 116-01 to 116-04 C 70/60 85
117 R 19 117-01 to 117-04 C 70/60 85
118 R 19 118-01 to 118-04 C 70/60 85
Phase 1a to Phase 1b
119 R 15 119-01, 119-03 to 119-06 B 65/55 85
122 R 16 122-01, 122-03, 122-05 C 70/60 85
122-04 and 122-06 B 65/55 85
123 R 16 123-01, 123-03, 123-05 C 70/60 85
123-04 and 123-06 B 65/55 85
125 R 16 125-01, 125-03, 125-05 C 70/60 85
125-04 and 125-06 B 65/55 85
126 R 16 126-01, 126-03 to 126-05 C 70/60 85
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ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3] ASR[4]
Daytime &
Evening/
Night-time
Criteria
Leq 30 min
dB(A)[5]
Criteria
Lmax
dB(A)[6]
126-06 B 65/55 85
129 R 16 129-01, 129-03, 129-05 C 70/60 85
129-04 and 129-06 B 65/55 85
130 R 17 130-01, 130-03, 130-05 C 70/60 85
130-04 and 130-06 B 65/55 85
132 R 17 132-01, 132-03, 132-05 C 70/60 85
132-04 and 132-06 B 65/55 85
133 R 17 133-01, 133-03, 133-05 C 70/60 85
133-04 and 133-06 B 65/55 85
135 R 17 135-01, 135-03, 135-05 C 70/60 85
R 17 135-04 and 135-06 B 65/55 85
801 E 1 801-01 C 70/- 85
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] R – Residential Premises, E – Educational Institutions, C – Country Parks
[3] NAP – Noise Assessment Point
[4] Details on the determination of Area Sensitivity Rating are shown in Appendix 4.1b.
[5] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise
criterion is proposed according to IND-TM.
[6] Noise criterion between 2300 – 0700 hours according to EIAO-TM.
[7] N/A – Not Applicable, In accordance with Annex 13 of the EIAO-TM, country parks are
considered to be a NSR. However, the EIAO-TM and IND-TM do not provide a specific noise
limits for Country Parks.
Table 4.25c Representative NSRs for rail noise assessment (Phase 1a to Phase 1c population intake after Year 2027)
ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3] ASR[4]
Daytime &
Evening/
Night-time
Criteria
Leq 30 min
dB(A)[5]
Criteria
Lmax
dB(A)[6]
Existing NSRs
N01 C N/A[7] N01-01 N/A[7] N/A[7] N/A[7]
Planned NSRs
Phase 1a
101 R 17 101-01, 101-03, 101-05 C 70/60 85
R 17 101-04 and 101-06 B 65/55 85
103 R 18 103-01, 103-03 to 103-05 C 70/60 85
R 18 103-06 B 65/55 85
104 R 18 104-01 to 104-03 B 65/55 85
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ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3] ASR[4]
Daytime &
Evening/
Night-time
Criteria
Leq 30 min
dB(A)[5]
Criteria
Lmax
dB(A)[6]
R 18 104-04 C 70/60 85
107 R 18 107-01, 107-03 to 107-06 C 70/60 85
108 R 18 108-01, 108-03 to 108-06 C 70/60 85
110 R 18 110-01, 110-03 to 110-06 C 70/60 85
111 R 19 111-01 to 111-04 C 70/60 85
113 R 19 113-01, 113-03 to 113-06 C 70/60 85
114 R 19 114-01 to 114-04 C 70/60 85
116 R 19 116-01 to 116-04 C 70/60 85
117 R 19 117-01 to 117-04 C 70/60 85
118 R 19 118-01 to 118-04 C 70/60 85
Phase 1a to Phase 1b
119 R 15 119-01, 119-03 to 119-06 B 65/55 85
122 R 16 122-01, 122-03, 122-05 C 70/60 85
122-04 and 122-06 B 65/55 85
123 R 16 123-01, 123-03, 123-05 C 70/60 85
123-04 and 123-06 B 65/55 85
125 R 16 125-01, 125-03, 125-05 C 70/60 85
125-04 and 125-06 B 65/55 85
126 R 16 126-01, 126-03 to 126-05 C 70/60 85
126-06 B 65/55 85
129 R 16 129-01, 129-03, 129-05 C 70/60 85
129-04 and 129-06 B 65/55 85
130 R 17 130-01, 130-03, 130-05 C 70/60 85
130-04 and 130-06 B 65/55 85
132 R 17 132-01, 132-03, 132-05 C 70/60 85
132-04 and 132-06 B 65/55 85
133 R 17 133-01, 133-03, 133-05 C 70/60 85
133-04 and 133-06 B 65/55 85
135 R 17 135-01, 135-03 to 135-06 C 70/60 85
801 E 1 801-01 C 70/- 85
Phase 1a to Phase 1c
136 R 19 136-01 to 136-04 C 70/60 85
139 R 20 139-01 to 139-04 C 70/60 85
140 R 20 140-01 to 140-04 C 70/60 85
142 R 20 142-01, 142-03 to 142-06 C 70/60 85
143 R 20 143-01, 143-03 to 143-06 C 70/60 85
146 R 21 146-01, 146-03 to 146-06 C 70/60 85
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ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3] ASR[4]
Daytime &
Evening/
Night-time
Criteria
Leq 30 min
dB(A)[5]
Criteria
Lmax
dB(A)[6]
147 R 21 147-01, 147-03 to 147-06 C 70/60 85
149 R 21 149-01 to 149-04 C 70/60 85
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] R – Residential Premises, E – Educational Institutions, C – Country Parks
[3] NAP – Noise Assessment Point
[4] Details on the determination of Area Sensitivity Rating are shown in Appendix 4.1b.
[5] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise
criterion is proposed according to IND-TM.
[6] Noise criterion between 2300 – 0700 hours according to EIAO-TM.
[7] N/A – Not Applicable, In accordance with Annex 13 of the EIAO-TM, country parks are
considered to be a NSR. However, the EIAO-TM and IND-TM do not provide a specific noise
limits for Country Parks.
Table 4.25d Representative NSRs for rail noise assessment (Phase 1a to Phase 2 population intake after Year 2030)
ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3] ASR[4]
Daytime &
Evening/
Night-time
Criteria Leq
30 min
dB(A)[5]
Criteria
Lmax
dB(A)[6]
Existing NSRs
N01 C N/A[7] N01-01 N/A[7] N/A[7] N/A[7]
Planned NSRs
Phase 1a
101 R 17 101-01, 101-03, 101-05 C 70/60 85
101-04 and 101-06 B 65/55 85
103 R 18 103-01, 103-03 to 103-05 C 70/60 85
103-06 B 65/55 85
104 R 18 104-01 to 104-04 B 65/55 85
107 R 18 107–01, 107–03, 107–05 C 70/60 85
107–04 and 107–06 B 65/55 85
108 R 18 108–01, 108–03, 108–05 C 70/60 85
108–04 and 108–06 B 65/55 85
110 R 18 110–01, 110–03 to 110–05 C 70/60 85
110–06 B 65/55 85
111 R 19 111-01 to 111-04 B 65/55 85
113 R 19 113–01, 113–03 to 113–05 C 70/60 85
113-06 B 65/55 85
114 R 19 114-01 to 114-04 B 65/55 85
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ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3] ASR[4]
Daytime &
Evening/
Night-time
Criteria Leq
30 min
dB(A)[5]
Criteria
Lmax
dB(A)[6]
116 R 19 116-01 to 116-04 B 65/55 85
117 R 19 117-01 to 117-04 B 65/55 85
118 R 19 118-01 to 118-04 B 65/55 85
Phase 1a to Phase 1b
119 R 15 119-01, 119-03 to 119-06 B 65/55 85
122 R 16 122-01, 122-03, 122-05 C 70/60 85
122-04 and 122-06 B 65/55 85
123 R 16 123-01, 123-03, 123-05 C 70/60 85
123-04 and 123-06 B 65/55 85
125 R 16 125-01, 125-03, 125-05 C 70/60 85
125-04 and 125-06 B 65/55 85
126 R 16 126-01, 126-03 to 126-05 C 70/60 85
126-06 B 65/55 85
129 R 16 129-01, 129-03, 129-05 C 70/60 85
129-04 and 129-06 B 65/55 85
130 R 17 130-01, 130-03, 130-05 C 70/60 85
130-04 and 130-06 B 65/55 85
132 R 17 132-01, 132-03, 132-05 C 70/60 85
132-04 and 132-06 B 65/55 85
133 R 17 133-01, 133-03, 133-05 C 70/60 85
133-04 and 133-06 B 65/55 85
135 R 17
135-01, 135-03, 135-05 C 70/60 85
135-04 and 135-06 B 65/55 85
801 E 1 801-01 C 70/- 85
Phase 1a to Phase 1c
136 R 19 136-01 to 136-04 B 65/55 85
139 R 20 139-01 to 139-04 B 65/55 85
140 R 20 140-01 to 140-04 B 65/55 85
142 R 20 142-01, 142-03 to 142-06 C 70/60 85
143 R 20 143-01, 143-03 to 143-06 C 70/60 85
146 R 21 146-01 to 146-04 C 70/60 85
147 R 21 147-01, 147-03 to 147-06 C 70/60 85
149 R 21 149-01 to 149-04 C 70/60 85
Phase 1 to Phase 2
201 R 16 201-01 to 201-03 C 70/60 85
206 R 16 206-01 C 70/60 85
207 R 17 207-01 C 70/60 85
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ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3] ASR[4]
Daytime &
Evening/
Night-time
Criteria Leq
30 min
dB(A)[5]
Criteria
Lmax
dB(A)[6]
211 R 17 211-01 C 70/60 85
212 R 17 212-01 to 212-02 C 70/60 85
215 R 18 215-01 to 215-04 C 70/60 85
501 E 7 501-01 to 501-05 C 70/- 85
802 E 1 802-01 to 802-02 C 70/- 85
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] R – Residential Premises, E – Educational Institutions, C – Country Parks
[3] NAP – Noise Assessment Point
[4] Details on the determination of Area Sensitivity Rating are shown in Appendix 4.1b.
[5] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise
criterion is proposed according to IND-TM.
[6] Noise criterion between 2300 – 0700 hours according to EIAO-TM.
[7] N/A – Not Applicable, In accordance with Annex 13 of the EIAO-TM, country parks are
considered to be a NSR. However, the EIAO-TM and IND-TM do not provide a specific noise
limits for Country Parks.
Table 4.25e Representative NSRs for rail noise assessment (Phase 1a to Phase 3 after Year 2034)
ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3] ASR[4]
Daytime &
Evening/
Night-time
Criteria Leq
30 min
dB(A)[5]
Criteria
Lmax
dB(A)[6]
Existing NSRs
N01 C N/A[7] N01-01 N/A[7] N/A[7] N/A[7]
Planned NSRs
Phase 1a
101 R 17 101-01, 101-03, 101-05 C 70/60 85
101-04 and 101-06 B 65/55 85
103 R 18 103-01, 103-03 to 103-05 C 70/60 85
103-06 B 65/55 85
104 R 18 104-01 to 104-04 B 65/55 85
107 R 18 107–01, 107–03, 107–05 C 70/60 85
107–04 and 107–06 B 65/55 85
108 R 18 108–01, 108–03, 108–05 C 70/60 85
108–04 and 108–06 B 65/55 85
110 R 18 110–01, 110–03 to 110–05 C 70/60 85
110–06 B 65/55 85
111 R 19 111-01 to 111-04 B 65/55 85
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ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3] ASR[4]
Daytime &
Evening/
Night-time
Criteria Leq
30 min
dB(A)[5]
Criteria
Lmax
dB(A)[6]
113 R 19 113–01, 113–03 to 113–05 C 70/60 85
113-06 B 65/55 85
114 R 19 114-01 to 114-04 B 65/55 85
116 R 19 116-01 to 116-04 B 65/55 85
117 R 19 117-01 to 117-04 B 65/55 85
118 R 19 118-01 to 118-04 B 65/55 85
Phase 1a to Phase 1b
119 R 15 119-01, 119-03 to 119-06 B 65/55 85
122 R 16 122-01, 122-03, 122-05 C 70/60 85
122-04 and 122-06 B 65/55 85
123 R 16 123-01, 123-03, 123-05 C 70/60 85
123-04 and 123-06 B 65/55 85
125 R 16 125-01, 125-03, 125-05 C 70/60 85
125-04 and 125-06 B 65/55 85
126 R 16 126-01, 126-03 to 126-05 C 70/60 85
126-06 B 65/55 85
129 R 16 129-01, 129-03, 129-05 C 70/60 85
129-04 and 129-06 B 65/55 85
130 R 17 130-01, 130-03, 130-05 C 70/60 85
130-04 and 130-06 B 65/55 85
132 R 17 132-01, 132-03, 132-05 C 70/60 85
132-04 and 132-06 B 65/55 85
133 R 17 133-01, 133-03, 133-05 C 70/60 85
133-04 and 133-06 B 65/55 85
135 R 17
135-01, 135-03, 135-05 C 70/60 85
135-04 and 135-06 B 65/55 85
801 E 1 801-01 C 70/- 85
Phase 1a to Phase 1c
136 R 19 136-01 to 136-04 B 65/55 85
139 R 20 139-01 to 139-04 B 65/55 85
140 R 20 140-01 to 140-04 B 65/55 85
142 R 20 142-01, 142-03 to 142-05 C 70/60 85
142-06 B 65/55 85
143 R 20 143-01, 143-03 to 143-05 C 70/60 85
143-06 B 65/55 85
146 R 21 146-01 to 146-04 B 65/55 85
147 R 21 147-01, 147-03 to 147-05 C 70/60 85
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ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3] ASR[4]
Daytime &
Evening/
Night-time
Criteria Leq
30 min
dB(A)[5]
Criteria
Lmax
dB(A)[6]
147-06 B 65/55 85
149 R 21 149-01 to 149-04 B 65/55 85
Phase 1 to Phase 2
201 R 16 201-01 to 201-03 C 70/60 85
206 R 16 206-01 C 70/60 85
207 R 17 207-01 C 70/60 85
211 R 17 211-01 C 70/60 85
212 R 17 212-01 to 212-02 C 70/60 85
215 R 18 215-01 to 215-04 C 70/60 85
501 E 7 501-01 to 501-05 C 70/60 85
802 E 1 802-01 to 802-02 C 70/- 85
Phase 1 to Phase 3
301 R 19 301-01 C 70/60 85
303 R 19 303-01 to 303-07 C 70/60 85
304 R 19 304-01 C 70/60 85
305 R 19 305-01 C 70/60 85
307 R 20 307-01 to 307-06 C 70/60 85
308 R 21 308-01 C 70/60 85
309 R 22 309-01 to 309-02 C 70/60 85
310 R 18 310-01 to 310-04 C 70/60 85
311 R 18 311-01 to 311-02 C 70/60 85
312 R 18 312-01 C 70/60 85
601 E 7
601–01 and 601–06 B 65/- 85
601–02 to 601–05, 601–07
to 601–09 C 70/- 85
803 E 1 803-01 B 65/- 85
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] R – Residential Premises, E – Educational Institutions, C – Country Parks
[3] NAP – Noise Assessment Point
[4] Details on the determination of Area Sensitivity Rating are shown in Appendix 4.1b.
[5] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise
criterion is proposed according to IND-TM.
[6] Noise criterion between 2300 – 0700 hours according to EIAO-TM.
[7] N/A – Not Applicable, In accordance with Annex 13 of the EIAO-TM, country parks are
considered to be a NSR. However, the EIAO-TM and IND-TM do not provide a specific noise
limits for Country Parks.
MTR Corporation Limited Proposed Comprehensive Residential and Commercial Development atop Siu
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Page 4-89
Table 4.25f Representative NSRs for rail noise assessment (full occupation after Year 2038)
ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3] ASR[4]
Daytime &
Evening/
Night-time
Criteria Leq
30 min
dB(A)[5]
Criteria
Lmax
dB(A)[6]
Existing NSRs
N01 C N/A[7] N01-01 N/A[7] N/A[7] N/A[7]
Planned NSRs
Phase 1a
101 R 17 101-01, 101-03, 101-05 C 70/60 85
101-04 and 101-06 B 65/55 85
103 R 18 103-01, 103-03 to 103-05 C 70/60 85
103-06 B 65/55 85
104 R 18 104-01 to 104-04 B 65/55 85
107 R 18 107–01, 107–03, 107–05 C 70/60 85
107–04 and 107–06 B 65/55 85
108 R 18 108–01, 108–03, 108–05 C 70/60 85
108–04 and 108–06 B 65/55 85
110 R 18 110–01, 110–03 to 110–05 C 70/60 85
110–06 B 65/55 85
111 R 19 111-01 to 111-04 B 65/55 85
113 R 19 113–01, 113–03 to 113–05 C 70/60 85
113-06 B 65/55 85
114 R 19 114-01 to 114-04 B 65/55 85
116 R 19 116-01 to 116-04 B 65/55 85
117 R 19 117-01 to 117-04 B 65/55 85
118 R 19 118-01 to 118-04 B 65/55 85
Phase 1a to Phase 1b
119 R 15 119-01, 119-03 to 119-06 B 65/55 85
122 R 16 122-01, 122-03, 122-05 C 70/60 85
122-04 and 122-06 B 65/55 85
123 R 16 123-01, 123-03, 123-05 C 70/60 85
123-04 and 123-06 B 65/55 85
125 R 16 125-01, 125-03, 125-05 C 70/60 85
125-04 and 125-06 B 65/55 85
126 R 16 126-01, 126-03 to 126-05 C 70/60 85
126-06 B 65/55 85
129 R 16 129-01, 129-03, 129-05 C 70/60 85
129-04 and 129-06 B 65/55 85
130 R 17 130-01, 130-03, 130-05 C 70/60 85
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Page 4-90
ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3] ASR[4]
Daytime &
Evening/
Night-time
Criteria Leq
30 min
dB(A)[5]
Criteria
Lmax
dB(A)[6]
130-04 and 130-06 B 65/55 85
132 R 17 132-01, 132-03, 132-05 C 70/60 85
132-04 and 132-06 B 65/55 85
133 R 17 133-01, 133-03, 133-05 C 70/60 85
133-04 and 133-06 B 65/55 85
135 R 17
135-01, 135-03, 135-05 C 70/60 85
135-04 and 135-06 B 65/55 85
801 E 1 801-01 C 70/- 85
Phase 1a to Phase 1c
136 R 19 136-01 to 136-04 B 65/55 85
139 R 20 139-01 to 139-04 B 65/55 85
140 R 20 140-01 to 140-04 B 65/55 85
142 R 20 142-01, 142-03 to 142-05 C 70/60 85
142-06 B 65/55 85
143 R 20 143-01, 143-03 to 143-05 C 70/60 85
143-06 B 65/55 85
146 R 21 146-01 to 146-04 B 65/55 85
147 R 21 147-01, 147-03 to 147-05 C 70/60 85
147-06 B 65/55 85
149 R 21 149-01 to 149-04 B 65/55 85
Phase 1 to Phase 2
201 R 16 201-01 to 201-03 C 70/60 85
206 R 16 206-01 C 70/60 85
207 R 17 207-01 C 70/60 85
211 R 17 211-01 C 70/60 85
212 R 17 212-01 to 212-02 C 70/60 85
215 R 18 215-01 to 215-04 C 70/60 85
501 E 7 501-01 to 501-05 C 70/- 85
802 E 1 802-01 to 802-02 C 70/- 85
Phase 1 to Phase 3
301 R 19 301-01 C 70/60 85
303 R 19 303-01 to 303-07 C 70/60 85
304 R 19 304-01 C 70/60 85
305 R 19 305-01 C 70/60 85
307 R 20 307-01 to 307-06 C 70/60 85
308 R 21 308-01 C 70/60 85
309 R 22 309-01 to 309-02 C 70/60 85
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ID[1] Uses[2]
No. of
Domestic
Storey
NAP[3] ASR[4]
Daytime &
Evening/
Night-time
Criteria Leq
30 min
dB(A)[5]
Criteria
Lmax
dB(A)[6]
310 R 18 310-01 to 310-04 C 70/60 85
311 R 18 311-01 to 311-02 C 70/60 85
312 R 18 312-01 C 70/60 85
601 E 7
601–01 and 601–06 B 65/- 85
601–02 to 601–05, 601–07
to 601–09 C 70/- 85
803 E 1 803-01 B 65/- 85
Phase 1 to Phase 4
401 R 21 401–01 to 401–04 B 65/55 85
403 R 21 403–01 to 403–04 B 65/55 85
404 R 22 404–01 to 404–04 B 65/55 85
407 R 22 407–01 to 407–04 B 65/55 85
408 R 20 408-02 to 408–18 C 70/60 85
409 R 20 409-01 to 409–18 C 70/60 85
414 R 21 414-01 to 414–15 C 70/60 85
415 R 21 415-01 to 415-02 C 70/60 85
419 R 21 419-01 to 419–13 C 70/60 85
420 R 22 420-01 to 420–19 C 70/60 85
421 R 22 421-01 to 421–17 C 70/60 85
422 R 22 422-01 to 422–12 C 70/60 85
701 E 7 701-01 to 701-08 C 70/- 85
804 E 1 804-01 B 65/- 85
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] R – Residential Premises, E – Educational Institutions, C – Country Parks
[3] NAP – Noise Assessment Point
[4] Details on the determination of Area Sensitivity Rating are shown in Appendix 4.1b.
[5] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise
criterion is proposed according to IND-TM.
[6] Noise criterion between 2300 – 0700 hours according to EIAO-TM.
[7] N/A – Not Applicable, In accordance with Annex 13 of the EIAO-TM, country parks are
considered to be a NSR. However, the EIAO-TM and IND-TM do not provide a specific noise
limits for Country Parks.
Inventory of Noise Sources
4.7.2.2 Potential rail noise impacts are anticipated from the existing TCL and
AEL which runs on the at-grade ballast track between MTR Tung
Chung Station and MTR Tsing Yi Station which is located to the
southern side of the proposed development. The noise inventory in the
approved Lantau and Airport Railway Environmental Assessment
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Report (LAR EIA) (EIA-029/BC) has been adopted. Absorptive panel
shall be installed under platform of SHO as far as possible to prevent
noise reflection. The alignment of rail tracks considered in the
assessment is the re-aligned TCL and AEL due to provision of SHO.
In addition, the shunting noise in SHD during SHD operation is also
included and addressed in this EIA report.
4.7.3 Prediction and Evaluation of Rail Noise Impact
Scenarios
4.7.3.1 The rail noise impact assessment including the unmitigated scenario
and mitigated scenario has been conducted with respect to the criteria
set in Annex 5 of the TM. The worst operation mode representing the
maximum noise emission has been assessed. Agreement with the
Director on the scenarios has been obtained prior to the
commencement of the assessment.
4.7.3.2 The following scenarios have been conducted:
Phase 1a population intake after April 2026 (Unmitigated Scenario and Mitigated Scenario);
Phase 1a to Phase 1b population intake after October 2026 (Unmitigated Scenario and Mitigated Scenario);
Phase 1a to Phase 1c population intake after April 2027 (Unmitigated Scenario and Mitigated Scenario);
Phase 1 to Phase 2 population intake after January 2030 (Unmitigated Scenario and Mitigated Scenario);
Phase 1a to Phase 3 population intake after January 2034 (Unmitigated Scenario and Mitigated Scenario); and
Full occupation, i.e. Phase 1 to Phase 4 after July 2038 (Unmitigated Scenario and Mitigated Scenario).
Prediction of Noise Impact
4.7.3.3 The predicted rail noise levels in Leq (30 min) and Lmax during the day and
at night at the selected assessment points at various representative floor
levels (in m P.D.) are presented on tables and plans of suitable scale.
4.7.3.4 For Lmax prediction, Equation 15.21 in the Transportation Noise
Reference Book 1987 has been adopted to calculate Lmax at NSRs,
façade correction has been included.
4.7.3.5 The assessment has covered the rail noise impacts associated with the
existing railways, the re-aligned TCL and AEL and train movement
within SHD due to provision of SHO on existing and planned NSRs
with proposed mitigation measures within the assessment area. As the
operation of train movement within SHD is different during day-time
and night-time, rail noise impact for day-time and night-time have
been included.
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4.7.3.6 The predicted rail noise levels for TCL/AEL and SHD operation at the
representative NSRs are presented in the Table 4.26. Details are
provided in Appendix 4.21.
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Table 4.26a Predicted rail noise impact at existing and planned NSRs under unmitigated scenario (Phase 1a population intake after Year 2026)
ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
Existing NSRs
N01 N01-01 N/A[4] 68 68 80 N/A[4] N/A[4] N
Planned NSRs
Phase 1a
101 101-01, 101-03 to 101-06 C 57 57 78 70/60 85 N
103 103-01, 103-03 to 103-05 C 67 67 84 70/60 85 Y
103-06 B 53 51 84 65/55 85 N
104 104-01 to 104-03 B <40 <40 <60 65/55 85 N
104-04 C 54 52 <60 70/60 85 N
107 107-01, 107-03 to 107-06 C 62 60 77 70/60 85 N
108 108-01, 108-03 to 108-06 C 63 60 76 70/60 85 N
110 110-01, 110-03 to 110-06 C 67 67 83 70/60 85 Y
111 111-01 to 111-04 C 64 61 <60 70/60 85 Y
113 113-01, 113-03 to 113-06 C 67 67 84 70/60 85 Y
114 114-01 to 114-04 C 64 61 <60 70/60 85 Y
116 116-01 to 116-04 C 64 62 <60 70/60 85 Y
117 117-01 to 117-04 C 65 62 <60 70/60 85 Y
118 118-01 to 118-04 C 65 63 <60 70/60 85 Y
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] NAP – Noise Assessment Point
[3] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise criterion is proposed according to IND-TM.
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[4] N/A – Not Applicable. In accordance with Annex 13 of the EIAO-TM, country parks are considered to be a NSR. However, the EIAO-TM and IND-TM do not provide
a specific noise limits for Country Parks.
[5] Noise criterion between 2300 – 0700 hours according to EIAO-TM.
[6] The nearest NSR of each building to the railway is adopted for Lmax calculation to represent the worst case scenario.
Table 4.26b Predicted rail noise impact at existing and planned NSRs under unmitigated scenario (Phase 1a to Phase 1b population intake after Year 2026)
ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
Existing NSRs
N01 N01-01 N/A[4] 68 68 80 N/A[4] N/A[4] N
Planned NSRs
Phase 1a
101 101-01, 101-03, 101-05 C 45 45 72 70/60 85 N
101-04 and 101-06 B 50 48 72 65/55 85 N
103 103-01, 103-03 to 103-05 C 67 67 84 70/60 85 Y
103-06 B 53 51 84 65/55 85 N
104 104-01 to 104-03 B <40 <40 <60 65/55 85 N
104-04 C 54 52 <60 70/60 85 N
107 107-01, 107-03 to 107-06 C 62 60 77 70/60 85 N
108 108-01, 108-03 to 108-06 C 63 60 76 70/60 85 N
110 110-01, 110-03 to 110-06 C 67 67 83 70/60 85 Y
111 111-01 to 111-04 C 64 61 <60 70/60 85 Y
113 113-01, 113-03 to 113-06 C 67 67 84 70/60 85 Y
114 114-01 to 114-04 C 64 61 <60 70/60 85 Y
116 116-01 to 116-04 C 64 62 <60 70/60 85 Y
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ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
117 117-01 to 117-04 C 65 62 <60 70/60 85 Y
118 118-01 to 118-04 C 65 63 <60 70/60 85 Y
Phase 1a to 1b
119 119-01, 119-03 to 119-06 B 43 45 <60 65/55 85 N
122 122-01, 122-03, 122-05 C 63 63 79 70/60 85 Y
122-04 and 122-06 B 47 47 79 65/55 85 N
123 123-01, 123-03, 123-05 C 61 61 80 70/60 85 Y
123-04 and 123-06 B 41 41 80 65/55 85 N
125 125-01, 125-03, 125-05 C 51 51 71 70/60 85 N
125-04 and 125-06 B <40 <40 71 65/55 85 N
126 126-01, 126-03 to 126-05 C 57 57 80 70/60 85 N
126-06 B <40 <40 80 65/55 85 N
129 129-01, 129-03, 129-05 C 51 51 82 70/60 85 N
129-04 and 129-06 B <40 <40 82 65/55 85 N
130 130-01, 130-03, 130-05 C 51 51 76 70/60 85 N
130-04 and 130-06 B <40 <40 76 65/55 85 N
132 132-01, 132-03, 132-05 C 60 60 79 70/60 85 N
132-04 and 132-06 B 43 43 79 65/55 85 N
133 133-01, 133-03, 133-05 C 62 62 80 70/60 85 Y
133-04 and 133-06 B 44 44 80 65/55 85 N
135 135–01, 135–03, 135–05 C 49 49 76 70/60 85 N
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ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
135–04 and 135–06 B <40 <40 76 65/55 85 N
801 801-01 C 57 - 76 70/- 85 N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] NAP – Noise Assessment Point
[3] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise criterion is proposed according to IND-TM
[4] N/A – Not Applicable. In accordance with Annex 13 of the EIAO-TM, country parks are considered to be a NSR. However, the EIAO-TM and IND-TM do not provide
a specific noise limits for Country Parks.
[5] Noise criterion between 2300 – 0700 hours according to EIAO-TM.
[6] The nearest NSR of each building to the railway is adopted for Lmax calculation to represent the worst case scenario.
Table 4.26c Predicted rail noise impact at existing and planned NSRs under unmitigated scenario (Phase 1a to Phase 1c population intake after Year 2027)
ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
Existing NSRs
N01 N01-01 N/A[4] 69 69 80 N/A[4] N/A[4] N
Planned NSRs
Phase 1a
101 101-01, 101-03, 101-05 C 45 45 72 70/60 85 N
101-04 and 101-06 B 50 48 72 65/55 85 N
103 103-01, 103-03 to 103-05 C 67 67 84 70/60 85 Y
103-06 B 53 51 84 65/55 85 N
104 104-01 to 104-03 B <40 <40 <60 65/55 85 N
104-04 C 54 52 <60 70/60 85 N
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ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
107 107-01, 107-03 to 107-06 C 62 60 77 70/60 85 N
108 108-01, 108-03 to 108-06 C 63 60 76 70/60 85 N
110 110-01, 110-03 to 110-06 C 67 67 83 70/60 85 Y
111 111-01 to 111-04 C 64 61 <60 70/60 85 Y
113 113-01, 113-03 to 113-06 C 67 67 84 70/60 85 Y
114 114-01 to 114-04 C 64 61 <60 70/60 85 Y
116 116-01 to 116-04 C 64 62 <60 70/60 85 Y
117 117-01 to 117-04 C 65 62 <60 70/60 85 Y
118 118-01 to 118-04 C 65 63 <60 70/60 85 Y
Phase 1a to Phase 1b
119 119-01, 119-03 to 119-06 B 43 45 <60 65/55 85 N
122 122-01, 122-03, 122-05 C 63 63 79 70/60 85 Y
122-04 and 122-06 B 47 47 79 65/55 85 N
123 123-01, 123-03, 123-05 C 61 61 80 70/60 85 Y
123-04 and 123-06 B 41 41 80 65/55 85 N
125 125-01, 125-03, 125-05 C 51 51 71 70/60 85 N
125-04 and 125-06 B <40 <40 71 65/55 85 N
126 126-01, 126-03 to 126-05 C 57 57 80 70/60 85 N
126-06 B <40 <40 80 65/55 85 N
129 129-01, 129-03, 129-05 C 51 51 82 70/60 85 N
129-04 and 129-06 B <40 <40 82 65/55 85 N
130 130-01, 130-03, 130-05 C 51 51 76 70/60 85 N
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ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
130-04 and 130-06 B <40 <40 76 65/55 85 N
132 132-01, 132-03, 132-05 C 60 60 79 70/60 85 N
132-04 and 132-06 B 43 43 79 65/55 85 N
133 133-01, 133-03, 133-05 C 62 62 80 70/60 85 Y
133-04 and 133-06 B 44 44 80 65/55 85 N
135 135–01, 135–03, 135–05 C 49 49 76 70/60 85 N
135–04 and 135–06 B <40 <40 76 65/55 85 N
801 801-01 C 57 - 76 70/- 85 N
Phase 1a to Phase 1c
136 136-01 to 136-04 C 65 63 76 70/60 85 Y
139 139-01 to 139-04 C 64 62 <60 70/60 85 Y
140 140-01 to 140-04 C 64 62 <60 70/60 85 Y
142 142-01, 142-03 to 142-06 C 66 63 <60 70/60 85 Y
143 143-01, 143-03 to 143-06 C 63 62 77 70/60 85 Y
146 146-01 to 146-04 C 59 55 78 70/60 85 N
147 147-01, 147-03 to 147-06 C 67 67 <60 70/60 85 Y
149 149-01 to 149-04 C 70 67 84 70/60 85 N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] NAP – Noise Assessment Point
[3] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise criterion is proposed according to IND-TM
[4] N/A – Not Applicable. In accordance with Annex 13 of the EIAO-TM, country parks are considered to be a NSR. However, the EIAO-TM and IND-TM do not provide
a specific noise limits for Country Parks.
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[5] Noise criterion between 2300 – 0700 hours according to EIAO-TM.
[6] The nearest NSR of each building to the railway is adopted for Lmax calculation to represent the worst case scenario.
Table 4.26d Predicted rail noise impact at existing and planned NSRs under unmitigated scenario (Phase 1a to Phase 2 population intake after Year 2030)
ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
Existing NSRs
N01 N01-01 N/A[4] 69 69 80 N/A[4] N/A[4] N
Planned NSRs
Phase 1
101 101-01, 101-03, 101-05 C 45 45 72 70/60 85 N
101-04 and 101-06 B <40 <40 72 65/55 85 N
103 103-01, 103-03 to 103-05 C 67 67 84 70/60 85 Y
103-06 B 44 44 84 65/55 85 N
104 104-01 to 104-04 B <40 <40 <60 65/55 85 N
107 107–01, 107–03, 107–05 C 56 56 77 70/60 85 N
107–04 and 107–06 B <40 <40 77 65/55 85 N
108 108–01, 108–03, 108–05 C 57 57 76 70/60 85 N
108–04 and 108–06 B <40 <40 76 65/55 85 N
110 110–01, 110–03 to 110–05 C 67 67 83 70/60 85 Y
110–06 B 42 42 83 65/55 85 N
111 111-01 to 111-04 B <40 <40 <60 65/55 85 N
113 113–01, 113–03 to 113–05 C 67 67 84 70/60 85 Y
113-06 B 41 41 84 65/55 85 N
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ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
114 114-01 to 114-04 B <40 <40 <60 65/55 85 N
116 116-01 to 116-04 B <40 <40 <60 65/55 85 N
117 117-01 to 117-04 B <40 <40 <60 65/55 85 N
118 118-01 to 118-04 B <40 <40 <60 65/55 85 N
Phase 1a to Phase 1b
119 119-01, 119-03 to 119-06 B 45 45 <60 65/55 85 N
122 122-01, 122-03, 122-05 C 63 63 <60 70/60 85 Y
122-04 and 122-06 B 47 47 <60 65/55 85 N
123 123-01, 123-03, 123-05 C 61 61 80 70/60 85 Y
123-04 and 123-06 B 41 41 80 65/55 85 N
125 125-01, 125-03, 125-05 C 51 51 71 70/60 85 N
125-04 and 125-06 B <40 <40 71 65/55 85 N
126 126-01, 126-03 to 126-05 C 57 57 80 70/60 85 N
126-06 B <40 <40 80 65/55 85 N
129 129-01, 129-03, 129-05 C 51 51 82 70/60 85 N
129-04 and 129-06 B <40 <40 82 65/55 85 N
130 130-01, 130-03, 130-05 C 51 51 76 70/60 85 N
130-04 and 130-06 B <40 <40 76 65/55 85 N
132 132-01, 132-03, 132-05 C 60 60 79 70/60 85 N
132-04 and 132-06 B 43 43 79 65/55 85 N
133 133-01, 133-03, 133-05 C 62 62 80 70/60 85 Y
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ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
133-04 and 133-06 B 44 44 80 65/55 85 N
135 135-01, 135-03, 135-05 C 49 49 76 70/60 85 N
135-04 and 135-06 B <40 <40 76 65/55 85 N
801 801-01 C 57 - 76 70/- 85 N
Phase 1a to Phase 1c
136 136-01 to 136-04 B <40 <40 <60 65/55 85 N
139 139-01 to 139-04 B <40 <40 <60 65/55 85 N
140 140-01 to 140-04 B <40 <40 <60 65/55 85 N
142 142-01, 142-03 to 142-06 C 60 59 77 70/60 85 N
143 143-01, 143-03 to 143-06 C 60 60 78 70/60 85 N
146 146-01 to 146-04 C 55 <40 <60 70/60 85 N
147 147-01, 147-03 to 147-06 C 67 67 84 70/60 85 Y
149 149-01 to 149-04 C 59 <40 <60 70/60 85 N
Phase 1 to Phase 2
201 201-01 to 201-03 C 57 57 75 70/60 85 N
206 206-01 C 50 50 72 70/60 85 N
207 207-01 C 46 46 69 70/60 85 N
211 211-01 C 50 50 77 70/60 85 N
212 212-01 to 212-02 C 50 50 74 70/60 85 N
215 215-01 to 215-04 C 48 48 68 70/60 85 N
501 501-01 to 501-05 C 52 - 74 70/- 85 N
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ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
802 802-01 to 802-02 C 57 - 76 70/- 85 N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] NAP – Noise Assessment Point
[3] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise criterion is proposed according to IND-TM
[4] N/A – Not Applicable. In accordance with Annex 13 of the EIAO-TM, country parks are considered to be a NSR. However, the EIAO-TM and IND-TM do not provide
a specific noise limits for Country Parks.
[5] Noise criterion between 2300 – 0700 hours according to EIAO-TM.
[6] The nearest NSR of each building to the railway is adopted for Lmax calculation to represent the worst case scenario.
Table 4.26e Predicted rail noise impact at existing and planned NSRs under unmitigated scenario (Phase 1a to Phase 3 population intake after Year 2034)
ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
Existing NSRs
N01 N01-01 N/A[4] 69 69 80 N/A[4] N/A[4] N
Planned NSRs
Phase 1a
101 101-01, 101-03, 101-05 C 45 45 72 70/60 85 N
101-04 and 101-06 B <40 <40 72 65/55 85 N
103 103-01, 103-03 to 103-05 C 67 67 84 70/60 85 Y
103-06 B 44 44 84 65/55 85 N
104 104-01 to 104-04 B <40 <40 <60 65/55 85 N
107 107–01, 107–03, 107–05 C 56 56 77 70/60 85 N
107–04 and 107–06 B <40 <40 77 65/55 85 N
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ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
108 108–01, 108–03, 108–05 C 57 57 76 70/60 85 N
108–04 and 108–06 B <40 <40 76 65/55 85 N
110 110–01, 110–03 to 110–05 C 67 67 83 70/60 85 Y
110–06 B 42 42 83 65/55 85 N
111 111-01 to 111-04 B <40 <40 <60 65/55 85 N
113 113–01, 113–03 to 113–05 C 67 67 84 70/60 85 Y
113-06 B 41 41 84 65/55 85 N
114 114-01 to 114-04 B <40 <40 <60 65/55 85 N
116 116-01 to 116-04 B <40 <40 <60 65/55 85 N
117 117-01 to 117-04 B <40 <40 <60 65/55 85 N
118 118-01 to 118-04 B <40 <40 <60 65/55 85 N
Phase 1a to Phase 1b
119 119-01, 119-03 to 119-06 B 45 45 <60 65/55 85 N
122 122-01, 122-03, 122-05 C 63 63 <60 70/60 85 Y
122-04 and 122-06 B 47 47 <60 65/55 85 N
123 123-01, 123-03, 123-05 C 61 61 80 70/60 85 Y
123-04 and 123-06 B 41 41 80 65/55 85 N
125 125-01, 125-03, 125-05 C 51 51 71 70/60 85 N
125-04 and 125-06 B <40 <40 71 65/55 85 N
126 126-01, 126-03 to 126-05 C 57 57 80 70/60 85 N
126-06 B <40 <40 80 65/55 85 N
129 129-01, 129-03, 129-05 C 51 51 82 70/60 85 N
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ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
129-04 and 129-06 B <40 <40 82 65/55 85 N
130 130-01, 130-03, 130-05 C 51 51 76 70/60 85 N
130-04 and 130-06 B <40 <40 76 65/55 85 N
132 132-01, 132-03, 132-05 C 60 60 79 70/60 85 N
132-04 and 132-06 B 43 43 79 65/55 85 N
133 133-01, 133-03, 133-05 C 62 62 80 70/60 85 Y
133-04 and 133-06 B 44 44 80 65/55 85 N
135 135-01, 135-03, 135-05 C 49 49 76 70/60 85 N
135-04 and 135-06 B <40 <40 76 65/55 85 N
801 801-01 C 57 - 76 70/- 85 N
Phase 1a to Phase 1c
136 136-01 to 136-04 B <40 <40 <60 65/55 85 N
139 139-01 to 139-04 B <40 <40 <60 65/55 85 N
140 140-01 to 140-04 B <40 <40 <60 65/55 85 N
142 142-01, 142-03 to 142-05 C 59 59 77 70/60 85 N
142-06 B 43 43 77 65/55 85 N
143 143-01, 143-03 to 143-05 C 60 60 78 70/60 85 N
143-06 B 45 45 78 65/55 85 N
146 146-01 to 146-04 B <40 <40 <60 65/55 85 N
147 147-01, 147-03 to 147-05 C 67 67 84 70/60 85 Y
147-06 B 40 40 84 65/55 85 N
149 149-01 to 149-04 B <40 <40 <60 65/55 85 N
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ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
Phase 1 to Phase 2
201 201-01 to 201-03 C 57 57 75 70/60 85 N
206 206-01 C 50 50 72 70/60 85 N
207 207-01 C 46 46 69 70/60 85 N
211 211-01 C 50 50 77 70/60 85 N
212 212-01 to 212-02 C 50 50 74 70/60 85 N
215 215-01 to 215-04 C 48 48 68 70/60 85 N
501 501-01 to 501-05 C 52 - 74 70/- 85 N
802 802-01 to 802-02 C 57 - 76 70/- 85 N
Phase 1 to Phase 3
301 301-01 C 50 50 77 70/60 85 N
303 303-01 to 303-07 C 56 56 73 70/60 85 N
304 304-01 C 50 50 69 70/60 85 N
305 305-01 C 51 51 70 70/60 85 N
307 307-01 to 307-06 C 62 62 73 70/60 85 Y
308 308-01 C 55 55 70 70/60 85 N
309 309-01 to 309-02 C 57 57 70 70/60 85 N
310 310-01 to 310-04 C 50 50 72 70/60 85 N
311 311-01 to 311-02 C 50 50 69 70/60 85 N
312 312-01 C 49 49 69 70/60 85 N
601 601–01 and 601–06 B 52 - 74 65/55 85 N
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ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
601–02 to 601–05, 601–07
to 601–09 C 54 - 74 70/- 85 N
803 803-01 B <40 - <60 65- 85 N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] NAP – Noise Assessment Point
[3] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise criterion is proposed according to IND-TM
[4] N/A – Not Applicable. In accordance with Annex 13 of the EIAO-TM, country parks are considered to be a NSR. However, the EIAO-TM and IND-TM do not provide
a specific noise limits for Country Parks.
[5] Noise criterion between 2300 – 0700 hours according to EIAO-TM.
[6] Only the first layer of NSRs are selected for Lmax prediction as Phase 1a to Phase 1c and Phase 4a could provide noise screening to rail noise on the residential blocks
in Phase 2, Phase 3, Phase 4b and Phase 4c. As the predicted maximum Lmax for first layer of NSR is 85 dB(A), therefore, the predicted Lmax for Phase 2, Phase 3,
Phase 4b and Phase 4c should be smaller than 85dB(A), which complies with the Lmax criterion.
Table 4.26f Predicted rail noise impact at existing and planned NSRs under unmitigated scenario (full occupation after Year 2038)
ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
Existing NSRs
N01 N01-01 N/A[4] 69 69 80 N/A[4] N/A[4] N
Planned NSRs
Phase 1a
101 101-01, 101-03, 101-05 C 45 45 72 70/60 85 N
101-04 and 101-06 B <40 <40 72 65/55 85 N
103 103-01, 103-03 to 103-05 C 67 67 84 70/60 85 Y
103-06 B 44 44 84 65/55 85 N
104 104-01 to 104-04 B <40 <40 <60 65/55 85 N
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ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
107 107–01, 107–03, 107–05 C 56 56 77 70/60 85 N
107–04 and 107–06 B <40 <40 77 65/55 85 N
108 108–01, 108–03, 108–05 C 57 57 76 70/60 85 N
108–04 and 108–06 B <40 <40 76 65/55 85 N
110 110–01, 110–03 to 110–05 C 67 67 83 70/60 85 Y
110–06 B 42 42 83 65/55 85 N
111 111-01 to 111-04 B <40 <40 <60 65/55 85 N
113 113–01, 113–03 to 113–05 C 67 67 84 70/60 85 Y
113-06 B 41 41 84 65/55 85 N
114 114-01 to 114-04 B <40 <40 <60 65/55 85 N
116 116-01 to 116-04 B <40 <40 <60 65/55 85 N
117 117-01 to 117-04 B <40 <40 <60 65/55 85 N
118 118-01 to 118-04 B <40 <40 <60 65/55 85 N
Phase 1a to Phase 1b
119 119-01, 119-03 to 119-06 B 45 45 <60 65/55 85 N
122 122-01, 122-03, 122-05 C 63 63 <60 70/60 85 Y
122-04 and 122-06 B 47 47 <60 65/55 85 N
123 123-01, 123-03, 123-05 C 61 61 80 70/60 85 Y
123-04 and 123-06 B 41 41 80 65/55 85 N
125 125-01, 125-03, 125-05 C 51 51 71 70/60 85 N
125-04 and 125-06 B <40 <40 71 65/55 85 N
126 126-01, 126-03 to 126-05 C 57 57 80 70/60 85 N
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ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
126-06 B <40 <40 80 65/55 85 N
129 129-01, 129-03, 129-05 C 51 51 82 70/60 85 N
129-04 and 129-06 B <40 <40 82 65/55 85 N
130 130-01, 130-03, 130-05 C 51 51 76 70/60 85 N
130-04 and 130-06 B <40 <40 76 65/55 85 N
132 132-01, 132-03, 132-05 C 60 60 79 70/60 85 N
132-04 and 132-06 B 43 43 79 65/55 85 N
133 133-01, 133-03, 133-05 C 62 62 80 70/60 85 Y
133-04 and 133-06 B 44 44 80 65/55 85 N
135 135-01, 135-03, 135-05 C 49 49 76 70/60 85 N
135-04 and 135-06 B <40 <40 76 65/55 85 N
801 801-01 C 57 - 76 70/- 85 N
Phase 1a to Phase 1c
136 136-01 to 136-04 B <40 <40 <60 65/55 85 N
139 139-01 to 139-04 B <40 <40 <60 65/55 85 N
140 140-01 to 140-04 B <40 <40 <60 65/55 85 N
142 142-01, 142-03 to 142-05 C 59 59 77 70/60 85 N
142-06 B 40 40 77 65/55 85 N
143 143-01, 143-03 to 143-05 C 60 60 78 70/60 85 N
143-06 B 41 41 78 65/55 85 N
146 146-01 to 146-04 B <40 <40 <60 65/55 85 N
147 147-01, 147-03 to 147-05 C 67 67 84 70/60 85 Y
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ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
147-06 B 40 40 84 65/55 85 N
149 149-01 to 149-04 B <40 <40 <60 65/55 85 N
Phase 1 to Phase 2
201 201-01 to 201-03 C 57 57 75 70/60 85 N
206 206-01 C 50 50 72 70/60 85 N
207 207-01 C 46 46 69 70/60 85 N
211 211-01 C 50 50 77 70/60 85 N
212 212-01 to 212-02 C 50 50 74 70/60 85 N
215 215-01 to 215-04 C 48 48 68 70/60 85 N
501 501-01 to 501-05 C 52 - 74 70/- 85 N
802 802-01 to 802-02 C 57 - 76 70/- 85 N
Phase 1 to Phase 3
301 301-01 C 50 50 77 70/60 85 N
303 303-01 to 303-07 C 56 56 73 70/60 85 N
304 304-01 C 50 50 69 70/60 85 N
305 305-01 C 51 51 70 70/60 85 N
307 307-01 to 307-06 C 62 62 73 70/60 85 Y
308 308-01 C 48 48 70 70/60 85 N
309 309-01 to 309-02 C 48 48 70 70/60 85 N
310 310-01 to 310-04 C 50 50 72 70/60 85 N
311 311-01 to 311-02 C 50 50 69 70/60 85 N
312 312-01 C 49 49 69 70/60 85 N
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ID[1] NAP[2] ASR Max. Predicted Leq 30
min (Daytime), dB(A)
Max. Predicted Leq 30
min (Night-time), dB(A)
Predicted
Lmax[6] , dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3] Lmax
[5]
601
601–01 and 601–06 B 52 - 74 65/- 85 N
601–02 to 601–05, 601–07
to 601–09 C 54 - 74 70/- 85 N
803 803-01 B <40 - <60 65/- 85 N
Phase 1 to Phase 4
401 401–01 to 401–04 B <40 <40 <60 65/55 85 N
403 403–01 to 403–04 B <40 <40 <60 65/55 85 N
404 404–01 to 404–04 B <40 <40 <60 65/55 85 N
407 407–01 to 407–04 B <40 <40 <60 65/55 85 N
408 408-02 to 408–18 C 60 60 78 70/60 85 N
409 409-01 to 409–18 C 58 58 77 70/60 85 N
414 414-01 to 414–15 C 63 63 75 70/60 85 Y
415 415-01 to 415-02 C 55 55 72 70/60 85 N
419 419-01 to 419–13 C 52 52 73 70/60 85 N
420 420-01 to 420–19 C 53 53 77 70/60 85 N
421 421-01 to 421–17 C 58 58 81 70/60 85 N
422 422-01 to 422–12 C 63 63 84 70/60 85 Y
701 701-01 to 701-08 C 57 - 81 70/- 85 N
804 804-01 B <40 - <60 65/- 85 N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] NAP – Noise Assessment Point
[3] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise criterion is proposed according to IND-TM
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[4] N/A – Not Applicable. In accordance with Annex 13 of the EIAO-TM, country parks are considered to be a NSR. However, the EIAO-TM and IND-TM do not provide
a specific noise limits for Country Parks.
[5] Noise criterion between 2300 – 0700 hours according to EIAO-TM.
[6] Only the first layer of NSRs are selected for Lmax prediction as Phase 1a to Phase 1c and Phase 4a could provide noise screening to rail noise on the residential blocks
in Phase 2, Phase 3, Phase 4b and Phase 4c. As the predicted maximum Lmax for first layer of NSR is 85 dB(A), therefore, the predicted Lmax for Phase 2, Phase 3,
Phase 4b and Phase 4c should be smaller than 85dB(A), which complies with the Lmax criterion.
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4.7.3.7 It can be seen that most of the NSRs met the criteria except some NSRs
exceed the night-time criterion of 1 – 7 dB(A). Hence, mitigation
measures are required. The rail noise impact at Country Park (N01)
ranges from 68 to 69 dB(A). Given the transient nature of visitor using
hiking trails, adverse noise impact is not anticipated.
4.7.3.8 The total number of dwellings, classrooms and other noise sensitive
receivers that will be exposed to rail noise impact exceeding the
criteria set in Annex 5 in the EIAO-TM have been calculated. It is
predicted that a total of about 200 dwellings will be exposed to rail
noise impact under unmitigated scenario during Phase 1a; 200
dwellings during Phase 1a to 1b; 400 dwellings during Phase 1a to 1c,
400 dwellings during Phase 1a to 2, 400 dwellings during Phase 1a to
3 and 400 dwellings after full occupation.
4.7.4 Mitigation of Rail Noise Impact
Direct Mitigation Measures
4.7.4.1 As the unmitigated scenario has exceeded the respective noise criterion,
the proposed rail noise mitigation measures are shown in Table 4.27
and Figure 4.6.
Table 4.27 Extents and locations of proposed mitigation measures for rail noise
Phase NAP[1] Type of Mitigation
Measures[2, 4]
Phase 1
103 Noise canopy[3]
110 Noise canopy[3]
113 Noise canopy[3]
122 Noise canopy[3]
123 Noise canopy[3]
133 Noise canopy[3]
147 Noise canopy[3]
Phase 3 307 Noise canopy[3]
Phase 4 414 Noise canopy[3]
422 Noise canopy[3]
Notes:
[1] NAP – Noise Assessment Point
[2] Details are shown in Figure 4.6.
[3] Out of 1.6km, a total of about 1.1km sections of noise canopy has been proposed along the
southern edge of the podium at +23mPD to protect the NSRs against road traffic and rail
noise impacts. Extend of canopy for each phase is shown in Figure 4.1c. Typical section
of noise canopy is given in Appendix 4.22.
[4] In addition, temporary cantilever noise barrier and canopy at the podium edge are proposed
after Phase 1 to mitigate the shunting noise during SHD replanning works. Extend of the
cantilever noise barrier and canopy is shown in Figure 4.6e.
4.7.4.2 Summary of the proposed road traffic noise and rail noise mitigation
measures are shown in Table 4.28.
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Table 4.28 Extents and locations of proposed mitigation measures for road traffic noise and rail noise
Phase NAP[1] Type of Mitigation
Measures[2,5]
Phase 1
103 Acoustic windows
Noise canopy[4]
110 Acoustic windows
Noise canopy[4]
113 Acoustic windows
Noise canopy[4]
122 Noise canopy[4]
123 Noise canopy[4]
133 Noise canopy[4]
143 Acoustic windows
147 Acoustic windows
Noise canopy[4]
801 Acoustic windows
Phase 2 802 Acoustic windows
Phase 3 307 Noise canopy[4]
601 Noise tolerant use[3]
Phase 4
408 Acoustic windows
409 Acoustic windows
414 Noise canopy[4]
420 Acoustic windows
421 Acoustic windows
422 Acoustic windows
Noise canopy[4]
701 Noise tolerant use[3]
Notes:
[1] NAP – Noise Assessment Point
[2] Details are shown in Figure 4.6.
[3] Noise tolerant use is proposed to be arranged in the internal layout at the facade facing the
NLH. Details are shown in Figure 4.6.
[4] Out of 1.6km, a total of about 1.1km sections of noise canopy has been proposed along the
southern edge of the podium at +23mPD to protect the NSRs against road traffic and rail
noise impacts. Extend of canopy for each phase is shown in Figure 4.1c. Typical section
of noise canopy is given in Appendix 4.22.
[5] In addition, temporary cantilever noise barrier and canopy at the podium edge are proposed
after Phase 1 to mitigate the shunting noise during SHD replanning works. Extend of the
cantilever noise barrier and canopy is shown in Figure 4.6e.
4.7.4.3 There might be potential wheel squeal when train moving through
sharp bends within existing SHD. The passenger trains has been
installed with stick lubricator to minimize the potential wheel squeal,
where necessary, further administrative measures including train
wheel and rail lubrication techniques will be adopted, during the
operation of existing SHD to minimize the potential wheel squeal.
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4.7.4.4 Fixed glazing could be considered as specially provided glazing under
NCO in the later detail design stage. When fixed/rail noise is
transmitted to the NSR primarily through specially provided glazing at
the facade of the building as considered appropriate for reducing the
noise, and the assessment point is a particular internal location
considered appropriate having regard to the normal occupancy of the
building, the proposed fixed glazing will be provided with sufficient
noise insulation performance to meet NCO TM requirement.
4.7.4.5 The predicted mitigated noise levels at representative NSRs are
presented in Table 4.29. Details are provided in Appendix 4.23.
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Table 4.29a Predicted rail noise impact at existing and planned NSRs under mitigated scenario (Phase 1a population intake after Year 2026)
ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
Existing NSRs
N01 N01-01 N/A[4] 68 68 N/A[4] N
Planned NSRs
Phase 1a
101 101-01, 101-03, 101-06 C 57 57 70/60 N
103 103-01, 103-03 to 103-05 C 53 53 70/60 N
103-06 B 46 44 65/55 N
104 104-01 to 104-03 B <40 <40 65/55 N
104-04 C 48 45 70/60 N
107 107-01, 107-03 to 107-06 C 53 51 70/60 N
108 108-01, 108-03 to 108-06 C 56 54 70/60 N
110 110-01, 110-03 to 110-06 C 55 54 70/60 N
111 111-01 to 111-04 C 52 50 70/60 N
113 113-01, 113-03 to 113-06 C 54 53 70/60 N
114 114-01 to 114-04 C 52 50 70/60 N
116 116-01 to 116-04 C 54 51 70/60 N
117 117-01 to 117-04 C 56 53 70/60 N
118 118-01 to 118-04 C 61 58 70/60 N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] NAP – Noise Assessment Point
[3] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise criterion is proposed according to IND-TM
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[4] N/A – Not Applicable. In accordance with Annex 13 of the EIAO-TM, country parks are considered to be a NSR. However, the EIAO-TM and IND-TM do not provide
a specific noise limits for Country Parks.
[5] Noise criterion between 2300 – 0700 hours according to EIAO-TM.
[6] The nearest NSR of each building to the railway is adopted for Lmax calculation to represent the worst case scenario.
Table 4.29b Predicted rail noise impact at existing and planned NSRs under mitigated scenario (Phase 1a to Phase 1b population intake after Year 2026)
ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
Existing NSRs
N01 N01-01 N/A[4] 68 68 N/A[4] N
Planned NSRs
Phase 1a
101 101-01, 101-03, 101-05 C <40 <40 70/60 N
101-04 and 101-06 B 46 44 65/55 N
103 103-01, 103-03 to 103-05 C 53 53 70/60 N
103-06 B 46 44 65/55 N
104 104-01 to 104-03 B <40 <40 65/55 N
104-04 C 48 45 70/60 N
107 107-01, 107-03 to 107-06 C 53 51 70/60 N
108 108-01, 108-03 to 108-06 C 56 54 70/60 N
110 110-01, 110-03 to 110-06 C 55 54 70/60 N
111 111-01 to 111-04 C 52 50 70/60 N
113 113-01, 113-03 to 113-06 C 54 53 70/60 N
114 114-01 to 114-04 C 52 50 70/60 N
116 116-01 to 116-04 C 54 51 70/60 N
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ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
117 117-01 to 117-04 C 56 53 70/60 N
118 118-01 to 118-04 C 61 58 70/60 N
Phase 1a to Phase 1b
119 119-01, 119-03 to 119-06 B <40 42 65/55 N
122 122-01, 122-03, 122-05 C 44 44 70/60 N
122-04 and 122-06 B <40 <40 65/55 N
123 123-01, 123-03, 123-05 C 51 51 70/60 N
123-04 and 123-06 B <40 <40 65/55 N
125 125-01, 125-03, 125-05 C 51 51 70/60 N
125-04 and 125-06 B <40 <40 65/55 N
126 126-01, 126-03 to 126-05 C 45 45 70/60 N
126-06 B <40 <40 65/55 N
129 129-01, 129-03, 129-05 C <40 <40 70/60 N
129-04 and 129-06 B <40 <40 65/55 N
130 130-01, 130-03, 130-05 C 51 51 70/60 N
130-04 and 130-06 B <40 <40 65/55 N
132 132-01, 132-03, 132-05 C 43 43 70/60 N
132-04 and 132-06 B 41 41 65/55 N
133 133-01, 133-03, 133-05 C 41 41 70/60 N
133-04 and 133-06 B <40 <40 65/55 N
135 135–01, 135–03, 135–05 C <40 <40 70/60 N
MTR Corporation Limited Proposed Comprehensive Residential and Commercial Development atop Siu Ho Wan Depot
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ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
135–04 and 135–06 B <40 <40 65/55 N
801 801-01 C 57 - 70/- N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] NAP – Noise Assessment Point
[3] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise criterion is proposed according to IND-TM
[4] N/A – Not Applicable. In accordance with Annex 13 of the EIAO-TM, country parks are considered to be a NSR. However, the EIAO-TM and IND-TM do not provide
a specific noise limits for Country Parks.
[5] Noise criterion between 2300 – 0700 hours according to EIAO-TM.
[6] The nearest NSR of each building to the railway is adopted for Lmax calculation to represent the worst case scenario.
Table 4.29c Predicted rail noise impact at existing and planned NSRs under mitigated scenario (Phase 1a to Phase 1c population intake after Year 2027)
ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
Existing NSRs
N01 N01-01 N/A[4] 69 69 N/A[4] N
Planned NSRs
Phase 1a
101 101-01, 101-03, 101-05 C <40 <40 70/60 N
101-04 and 101-06 B 46 44 65/55 N
103 103-01, 103-03 to 103-05 C 53 53 70/60 N
103-06 B 46 44 65/55 N
104 104-01 to 104-03 B <40 <40 65/55 N
104-04 C 48 45 70/60 N
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ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
107 107-01, 107-03 to 107-06 C 53 51 70/60 N
108 108-01, 108-03 to 108-06 C 56 54 70/60 N
110 110-01, 110-03 to 110-06 C 55 54 70/60 N
111 111-01 to 111-04 C 52 50 70/60 N
113 113-01, 113-03 to 113-06 C 54 53 70/60 N
114 114-01 to 114-04 C 52 50 70/60 N
116 116-01 to 116-04 C 54 51 70/60 N
117 117-01 to 117-04 C 56 53 70/60 N
118 118-01 to 118-04 C 61 58 70/60 N
Phase 1a to Phase 1b
119 119-01, 119-03 to 119-06 B <40 42 65/55 N
122 122-01, 122-03, 122-05 C 44 44 70/60 N
122-04 and 122-06 B <40 <40 65/55 N
123 123-01, 123-03, 123-05 C 51 51 70/60 N
123-04 and 123-06 B <40 <40 65/55 N
125 125-01, 125-03, 125-05 C 51 51 70/60 N
125-04 and 125-06 B <40 <40 65/55 N
126 126-01, 126-03 to 126-05 C 45 45 70/60 N
126-06 B <40 <40 65/55 N
129 129-01, 129-03, 129-05 C <40 <40 70/60 N
129-04 and 129-06 B <40 <40 65/55 N
130 130-01, 130-03, 130-05 C 51 51 70/60 N
MTR Corporation Limited Proposed Comprehensive Residential and Commercial Development atop Siu Ho Wan Depot
Environmental Impact Assessment Report
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ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
130-04 and 130-06 B <40 <40 65/55 N
132 132-01, 132-03, 132-05 C 43 43 70/60 N
132-04 and 132-06 B 41 41 65/55 N
133 133-01, 133-03, 133-05 C 41 41 70/60 N
133-04 and 133-06 B <40 <40 65/55 N
135 135–01, 135–03, 135–05 C <40 <40 70/60 N
135–04 and 135–06 B <40 <40 65/55 N
801 801-01 C 57 - 70/- N
Phase 1a to Phase 1c
136 136-01 to 136-04 C 60 58 70/60 N
139 139-01 to 139-04 C 55 53 70/60 N
140 140-01 to 140-04 C 56 53 70/60 N
142 142-01, 142-03 to 142-06 C 59 57 70/60 N
143 143-01, 143-03 to 143-06 C 56 55 70/60 N
146 146-01 to 146-04 C 55 44 70/60 N
147 147-01, 147-03 to 147-06 C 57 55 70/60 N
149 149-01 to 149-04 C 61 56 70/60 N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] NAP – Noise Assessment Point
[3] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise criterion is proposed according to IND-TM
[4] N/A – Not Applicable. In accordance with Annex 13 of the EIAO-TM, country parks are considered to be a NSR. However, the EIAO-TM and IND-TM do not provide
a specific noise limits for Country Parks.
MTR Corporation Limited Proposed Comprehensive Residential and Commercial Development atop Siu Ho Wan Depot
Environmental Impact Assessment Report
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[5] Noise criterion between 2300 – 0700 hours according to EIAO-TM.
[6] The nearest NSR of each building to the railway is adopted for Lmax calculation to represent the worst case scenario.
Table 4.29d Predicted rail noise impact at existing and planned NSRs under mitigated scenario (Phase 1a to Phase 2 population intake after Year 2030)
ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
Existing NSRs
N01 N01-01 N/A[4] 69 69 N/A[4] N
Phase 1a
Planned NSRs
101 101-01, 101-03, 101-05 C <40 <40 70/60 N
101-04 and 101-06 B <40 <40 65/55 N
103 103-01, 103-03 to 103-05 C 53 53 70/60 N
103-06 B 42 42 65/55 N
104 104-01 to 104-04 B <40 <40 65/55 N
107 107–01, 107–03, 107–05 C 42 42 70/60 N
107–04 and 107–06 B <40 <40 65/55 N
108 108–01, 108–03, 108–05 C 43 43 70/60 N
108–04 and 108–06 B <40 <40 65/55 N
110 110–01, 110–03 to 110–05 C 54 54 70/60 N
110–06 B 40 40 65/55 N
111 111-01 to 111-04 B <40 <40 65/55 N
113 113–01, 113–03 to 113–05 C 53 53 70/60 N
113-06 B <40 <40 65/55 N
114 114-01 to 114-04 B <40 <40 65/55 N
MTR Corporation Limited Proposed Comprehensive Residential and Commercial Development atop Siu Ho Wan Depot
Environmental Impact Assessment Report
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ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
116 116-01 to 116-04 B <40 <40 65/55 N
117 117-01 to 117-04 B <40 <40 65/55 N
118 118-01 to 118-04 B <40 <40 65/55 N
Phase 1a to Phase 1b
119 119-01, 119-03 to 119-06 B <40 <40 65/55 N
122 122-01, 122-03, 122-05 C 44 44 70/60 N
122-04 and 122-06 B <40 <40 65/55 N
123 123-01, 123-03, 123-05 C 51 51 70/60 N
123-04 and 123-06 B <40 <40 65/55 N
125 125-01, 125-03, 125-05 C 51 51 70/60 N
125-04 and 125-06 B <40 <40 65/55 N
126 126-01, 126-03 to 126-05 C 45 45 70/60 N
126-06 B <40 <40 65/55 N
129 129-01, 129-03, 129-05 C <40 <40 70/60 N
129-04 and 129-06 B <40 <40 65/55 N
130 130-01, 130-03, 130-05 C 51 51 70/60 N
130-04 and 130-06 B <40 <40 65/55 N
132 132-01, 132-03, 132-05 C 43 43 70/60 N
132-04 and 132-06 B 41 41 65/55 N
133 133-01, 133-03, 133-05 C 41 41 70/60 N
133-04 and 133-06 B <40 <40 65/55 N
MTR Corporation Limited Proposed Comprehensive Residential and Commercial Development atop Siu Ho Wan Depot
Environmental Impact Assessment Report
248118-REP-017-03 | Final | July 2017
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ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
135 135-01, 135-03, 135-05 C <40 <40 70/60 N
135-04 and 135-06 B <40 <40 65/55 N
801 801-01 C 57 - 70/- N
Phase 1a to Phase 1c
136 136-01 to 136-04 B <40 <40 65/55
139 139-01 to 139-04 B <40 <40 65/55 N
140 140-01 to 140-04 B <40 <40 65/55 N
142 142-01, 142-03 to 142-06 C 47 47 70/60 N
143 143-01, 143-03 to 143-06 C 54 54 70/60 N
146 146-01 to 146-04 C <40 <40 70/60 N
147 147-01, 147-03 to 147-06 C 54 54 70/60 N
149 149-01 to 149-04 C <40 <40 70/60 N
Phase 1 to Phase 2
201 201-01 to 201-03 C 57 57 70/60 N
206 206-01 C 47 47 70/60 N
207 207-01 C 44 44 70/60 N
211 211-01 C 49 49 70/60 N
212 212-01 to 212-02 C 47 47 70/60 N
215 215-01 to 215-04 C 46 46 70/60 N
501 501-01 to 501-05 C 51 - 70/- N
802 802-01 to 802-02 C 57 - 70/- N
Notes:
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[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] NAP – Noise Assessment Point
[3] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise criterion is proposed according to IND-TM
[4] N/A – Not Applicable. In accordance with Annex 13 of the EIAO-TM, country parks are considered to be a NSR. However, the EIAO-TM and IND-TM do not provide
a specific noise limits for Country Parks.
[5] Noise criterion between 2300 – 0700 hours according to EIAO-TM.
[6] The nearest NSR of each building to the railway is adopted for Lmax calculation to represent the worst case scenario.
Table 4.29e Predicted rail noise impact at existing and planned NSRs under mitigated scenario (Phase 1a to Phase 3 population intake after Year 2034)
ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
Existing NSRs
N01 N01-01 N/A[4] 69 69 N/A[4] N
Planned NSRs
Phase 1a
101 101-01, 101-03, 101-05 C <40 <40 70/60 N
101-04 and 101-06 B <40 <40 65/55 N
103 103-01, 103-03 to 103-05 C 53 53 70/60 N
103-06 B 42 42 65/55 N
104 104-01 to 104-04 B <40 <40 65/55 N
107 107–01, 107–03, 107–05 C 42 42 70/60 N
107–04 and 107–06 B <40 <40 65/55 N
108 108–01, 108–03, 108–05 C 43 43 70/60 N
108–04 and 108–06 B <40 <40 65/55 N
110 110–01, 110–03 to 110–05 C 54 54 70/60 N
MTR Corporation Limited Proposed Comprehensive Residential and Commercial Development atop Siu Ho Wan Depot
Environmental Impact Assessment Report
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ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
110–06 B 40 40 65/55 N
111 111-01 to 111-04 B <40 <40 65/55 N
113 113–01, 113–03 to 113–05 C 53 53 70/60 N
113-06 B <40 <40 65/55 N
114 114-01 to 114-04 B <40 <40 65/55 N
116 116-01 to 116-04 B <40 <40 65/55 N
117 117-01 to 117-04 B <40 <40 65/55 N
118 118-01 to 118-04 B <40 <40 65/55 N
Phase 1a to Phase 1b
119 119-01, 119-03 to 119-06 B <40 <40 65/55 N
122 122-01, 122-03, 122-05 C 44 44 70/60 N
122-04 and 122-06 B <40 <40 65/55 N
123 123-01, 123-03, 123-05 C 51 51 70/60 N
123-04 and 123-06 B <40 <40 65/55 N
125 125-01, 125-03, 125-05 C 51 51 70/60 N
125-04 and 125-06 B <40 <40 65/55 N
126 126-01, 126-03 to 126-05 C 45 45 70/60 N
126-06 B <40 <40 65/55 N
129 129-01, 129-03, 129-05 C <40 <40 70/60 N
129-04 and 129-06 B <40 <40 65/55 N
130 130-01, 130-03, 130-05 C 51 51 70/60 N
MTR Corporation Limited Proposed Comprehensive Residential and Commercial Development atop Siu Ho Wan Depot
Environmental Impact Assessment Report
248118-REP-017-03 | Final | July 2017
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ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
130-04 and 130-06 B <40 <40 65/55 N
132 132-01, 132-03, 132-05 C 43 43 70/60 N
132-04 and 132-06 B 41 41 65/55 N
133 133-01, 133-03, 133-05 C 41 41 70/60 N
133-04 and 133-06 B <40 <40 65/55 N
135 135-01, 135-03, 135-05 C <40 <40 70/60 N
135-04 and 135-06 B <40 <40 65/55 N
801 801-01 C 57 - 70/- N
Phase 1a to Phase 1c
136 136-01 to 136-04 B <40 <40 65/55 N
139 139-01 to 139-04 B <40 <40 65/55 N
140 140-01 to 140-04 B <40 <40 65/55 N
142 142-01, 142-03 to 142-05 C 47 47 70/60 N
142-06 B 43 43 65/55 N
143 143-01, 143-03 to 143-05 C 54 54 70/60 N
143-06 B 44 44 65/55 N
146 146-01 to 146-04 B <40 <40 65/55 N
147 147-01, 147-03 to 147-05 C 54 54 70/60 N
147-06 B 40 40 65/55 N
149 149-01 to 149-04 B <40 <40 65/55 N
Phase 1 to Phase 2
MTR Corporation Limited Proposed Comprehensive Residential and Commercial Development atop Siu Ho Wan Depot
Environmental Impact Assessment Report
248118-REP-017-03 | Final | July 2017
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ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
201 201-01 to 201-03 C 57 57 70/60 N
206 206-01 C 47 47 70/60 N
207 207-01 C 44 44 70/60 N
211 211-01 C 49 49 70/60 N
212 212-01 to 212-02 C 47 47 70/60 N
215 215-01 to 215-04 C 46 46 70/60 N
501 501-01 to 501-05 C 51 - 70/- N
802 802-01 to 802-02 C 57 - 70/- N
Phase 1 to Phase 3
301 301-01 C 48 48 70/60 N
303 303-01 to 303-07 C 56 56 70/60 N
304 304-01 C 49 49 70/60 N
305 305-01 C 49 49 70/60 N
307 307-01 to 307-06 C 56 56 70/60 N
308 308-01 C 55 55 70/60 N
309 309-01 to 309-02 C 57 57 70/60 N
310 310-01 to 310-04 C 48 48 70/60 N
311 311-01 to 311-02 C 48 48 70/60 N
312 312-01 C 47 47 70/60 N
601
601–01 and 601–06 B 49 - 65/55 N
601–02 to 601–05, 601–07 to
601–09 C 51 - 70/- N
MTR Corporation Limited Proposed Comprehensive Residential and Commercial Development atop Siu Ho Wan Depot
Environmental Impact Assessment Report
248118-REP-017-03 | Final | July 2017
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ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
803 803-01 B <40 - 65- N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] NAP – Noise Assessment Point
[3] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise criterion is proposed according to IND-TM
[4] N/A – Not Applicable. In accordance with Annex 13 of the EIAO-TM, country parks are considered to be a NSR. However, the EIAO-TM and IND-TM do not provide
a specific noise limits for Country Parks.
[5] Noise criterion between 2300 – 0700 hours according to EIAO-TM.
[6] The nearest NSR of each building to the railway is adopted for Lmax calculation to represent the worst case scenario.
Table 4.29f Predicted rail noise impact at existing and planned NSRs under mitigated scenario (full occupation after Year 2038)
ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
Existing NSRs
N01 N01-01 N/A[4] 69 69 N/A[4] N
Planned NSRs
Phase 1a
101 101-01, 101-03, 101-05 C <40 <40 70/60 N
101-04 and 101-06 B <40 <40 65/55 N
103 103-01, 103-03 to 103-05 C 53 53 70/60 N
103-06 B 42 42 65/55 N
104 104-01 to 104-04 B <40 <40 65/55 N
107 107–01, 107–03, 107–05 C 42 42 70/60 N
107–04 and 107–06 B <40 <40 65/55 N
MTR Corporation Limited Proposed Comprehensive Residential and Commercial Development atop Siu Ho Wan Depot
Environmental Impact Assessment Report
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ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
108 108–01, 108–03, 108–05 C 43 43 70/60 N
108–04 and 108–06 B <40 <40 65/55 N
110 110–01, 110–03 to 110–05 C 54 54 70/60 N
110–06 B 40 40 65/55 N
111 111-01 to 111-04 B <40 <40 65/55 N
113 113–01, 113–03 to 113–05 C 53 53 70/60 N
113-06 B <40 <40 65/55 N
114 114-01 to 114-04 B <40 <40 65/55 N
116 116-01 to 116-04 B <40 <40 65/55 N
117 117-01 to 117-04 B <40 <40 65/55 N
118 118-01 to 118-04 B <40 <40 65/55 N
Phase 1a to Phase 1b
119 119-01, 119-03 to 119-06 B <40 <40 65/55 N
122 122-01, 122-03, 122-05 C 44 44 70/60 N
122-04 and 122-06 B <40 <40 65/55 N
123 123-01, 123-03, 123-05 C 51 51 70/60 N
123-04 and 123-06 B <40 <40 65/55 N
125 125-01, 125-03, 125-05 C 51 51 70/60 N
125-04 and 125-06 B <40 <40 65/55 N
126 126-01, 126-03 to 126-05 C 45 45 70/60 N
126-06 B <40 <40 65/55 N
129 129-01, 129-03, 129-05 C <40 <40 70/60 N
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ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
129-04 and 129-06 B <40 <40 65/55 N
130 130-01, 130-03, 130-05 C 51 51 70/60 N
130-04 and 130-06 B <40 <40 65/55 N
132 132-01, 132-03, 132-05 C 43 43 70/60 N
132-04 and 132-06 B 41 41 65/55 N
133 133-01, 133-03, 133-05 C 41 41 70/60 N
133-04 and 133-06 B <40 <40 65/55 N
135 135-01, 135-03, 135-05 C <40 <40 70/60 N
135-04 and 135-06 B <40 <40 65/55 N
801 801-01 C 57 - 70/- N
Phase 1a to Phase 1c
136 136-01 to 136-04 B <40 <40 65/55 N
139 139-01 to 139-04 B <40 <40 65/55 N
140 140-01 to 140-04 B <40 <40 65/55 N
142 142-01, 142-03 to 142-05 C 47 47 70/60 N
142-06 B 40 40 65/55 N
143 143-01, 143-03 to 143-05 C 54 54 70/60 N
143-06 B 40 40 65/55 N
146 146-01 to 146-04 B <40 <40 65/55 N
147 147-01, 147-03 to 147-05 C 54 54 70/60 N
147-06 B 40 40 65/55 N
149 149-01 to 149-04 B <40 <40 65/55 N
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ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
Phase 1 to Phase 2
201 201-01 to 201-03 C 57 57 70/60 N
206 206-01 C 47 47 70/60 N
207 207-01 C 44 44 70/60 N
211 211-01 C 49 49 70/60 N
212 212-01 to 212-02 C 47 47 70/60 N
215 215-01 to 215-04 C 46 46 70/60 N
501 501-01 to 501-05 C 51 - 70/- N
802 802-01 to 802-02 C 57 - 70/- N
Phase 1 to Phase 3
301 301-01 C 48 48 70/60 N
303 303-01 to 303-07 C 56 56 70/60 N
304 304-01 C 49 49 70/60 N
305 305-01 C 49 49 70/60 N
307 307-01 to 307-06 C 55 55 70/60 N
308 308-01 C 48 48 70/60 N
309 309-01 to 309-02 C 48 48 70/60 N
310 310-01 to 310-04 C 48 48 70/60 N
311 311-01 to 311-02 C 48 48 70/60 N
312 312-01 C 47 47 70/60 N
601 601–01 and 601–06 B 49 - 65/- N
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ID[1] NAP[2] ASR Max. Predicted Leq 30 min
(Daytime), dB(A)
Max. Predicted Leq 30 min
(Night-time), dB(A)
Criteria, dB(A) Mitigation Measures
Required [Y/N] Leq 30 min[3]
601–02 to 601–05, 601–07 to
601–09 C 51 - 70/- N
803 803-01 B <40 - 65/- N
Phase 1 to Phase 4
401 401–01 to 401–04 B <40 <40 65/55 N
403 403–01 to 403–04 B <40 <40 65/55 N
404 404–01 to 404–04 B <40 <40 65/55 N
407 407–01 to 407–04 B <40 <40 65/55 N
408 408-02 to 408–18 C 60 60 70/60 N
409 409-01 to 409–18 C 57 57 70/60 N
414 414-01 to 414–15 C 52 52 70/60 N
415 415-01 to 415-02 C 50 50 70/60 N
419 419-01 to 419–13 C 51 51 70/60 N
420 420-01 to 420–19 C 51 51 70/60 N
421 421-01 to 421–17 C 51 51 70/60 N
422 422-01 to 422–12 C 57 57 70/60 N
701 701-01 to 701-08 C 54 - 70/- N
804 804-01 B <40 - 65/- N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] NAP – Noise Assessment Point
[3] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise criterion is proposed according to IND-TM
[4] N/A – Not Applicable. In accordance with Annex 13 of the EIAO-TM, country parks are considered to be a NSR. However, the EIAO-TM and IND-TM do not provide
a specific noise limits for Country Parks.
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[5] Noise criterion between 2300 – 0700 hours according to EIAO-TM.
[6] The nearest NSR of each building to the railway is adopted for Lmax calculation to represent the worst case scenario.
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4.7.4.6 With the proposed mitigation measures, all the representative NSRs
will be within the respective noise criterion. There would be no
existing dwellings, classrooms and other noise sensitive elements that
will be exposed to adverse residual noise impact exceeding the criteria
set in Annex 5 in the EIAO-TM.
4.7.4.7 Table 4.15 has presented the packages of noise mitigation measures
that are recommended for the current building design. Nevertheless,
depends on the evaluation during subsequent detailed design, the
future developers may wish to explore any alternative approaches to
achieve equivalent or even better environmental performance. During
the detailed design stage, an environmental review may be conducted
to study and optimise the extent of sections of canopy and noise barrier
that could help to reduce the rail noise impacts to allow scope in
enhancing current scheme adopted in this EIA. They would need to
demonstrate that the noise criteria can still be achieved by adopting
their packages of mitigation measures.
Indirect Mitigation Measures
4.7.4.8 Since direct mitigation measures are sufficient to protect the dwellings
to achieve compliance of relevant criteria, indirect mitigation measures
are not required.
4.7.5 Structural-borne Rail Noise Impact
4.7.5.1 As discussed in Section 4.5.5, structural-borne rail noise impact is not
anticipated under deck (reprovisioned SHD). In addition, the
TCL/AEL is operated on at-grade ballast track with no structural
integration with the topside development and SHO and SHD
Replanning Works, adverse structural-borne rail noise impact is not
anticipated.
4.7.6 Evaluation of Residual Rail Noise Impact
4.7.6.1 According to Section 4.7.4, all the NSRs are within the respective
noise criterion, adverse residual noise impacts are therefore not
anticipated.
4.7.7 Cumulative Rail and Fixed Plant Noise Impact
4.7.7.1 Cumulative rail and fixed plant noise impact assessment has been
conducted with mitigation for rail noise proposed in Section 4.5.4,
Section 4.7.4 and mitigation measures proposed in the Railway EIA.
4.7.7.2 Detail calculation is shown in Appendix 4.25 and summary of the
cumulative impacts are given in Table 4.30.
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Table 4.30a Predicted cumulative rail and fixed plant noise impact for selected representative NSR (Phase 1)
ID[1] NAP[2] ASR
Max. Predicted Noise
Level, dB(A) Criteria, dB(A)
Mitigation
Measures
Required [Y/N] Leq 30 min[3] Leq 30 min
[4]
103 103-01 C 61/55 70/60 N
108 108-06 C 60/55 70/60 N
110 110-01 C 59/55 70/60 N
113 113-01 C 58/54 70/60 N
116 116-01 C 56/49 70/60 N
119 119-01 B 57/50 65/55 N
119 119-06 B 57/49 65/55 N
123 123-01 C 61/54 70/60 N
136 136-04 C 62/58 70/60 N
139 139-01 C 60/51 70/60 N
142 142-06 C 62/58 70/60 N
143 143-06 C 62/54 70/60 N
149 149-03 C 65/58 70/60 N
149 149-04 C 65/55 70/60 N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] NAP – Noise Assessment Point
[3] The maximum noise level are presented for [Daytime and evening time Leq 30 min / night-time
Leq 30 min].
[4] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise
criterion is proposed according to IND-TM.
Table 4.30b Predicted cumulative rail and fixed plant noise impact for selected representative NSR (Phase 1 to 2)
ID[1] NAP[2] ASR
Max. Predicted Noise
Level, dB(A) Criteria, dB(A)
Mitigation
Measures
Required [Y/N] Leq 30 min[3] Leq 30 min
[4]
103 103-01 C 61/55 70/60 N
108 108-06 B 57/47 65/55 N
110 110-01 C 58/55 70/60 N
113 113-01 C 58/54 70/60 N
116 116-01 B 56/46 65/55 N
119 119-01 B 57/50 65/55 N
119 119-06 B 57/49 65/55 N
123 123-01 C 61/54 70/60 N
136 136-04 B 57/47 65/55 N
139 139-01 B 59/49 65/55 N
142 142-06 C 59/50 70/60 N
143 143-06 C 61/50 70/60 N
149 149-03 C 63/50 70/60 N
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ID[1] NAP[2] ASR
Max. Predicted Noise
Level, dB(A) Criteria, dB(A)
Mitigation
Measures
Required [Y/N] Leq 30 min[3] Leq 30 min
[4]
149 149-04 C 63/49 70/60 N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] NAP – Noise Assessment Point
[3] The maximum noise level are presented for [Daytime and evening time Leq 30 min / night-time
Leq 30 min].
[4] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise
criterion is proposed according to IND-TM.
Table 4.30c Predicted cumulative rail and fixed plant noise impact for selected representative NSR (Phase 1 to Phase 3)
ID[1] NAP[2] ASR
Max. Predicted Noise
Level, dB(A) Criteria, dB(A)
Mitigation
Measures
Required [Y/N] Leq 30 min[3] Leq 30 min
[4]
103 103-01 C 61/55 70/60 N
108 108-06 B 57/47 65/55 N
110 110-01 C 58/55 70/60 N
113 113-01 C 58/54 70/60 N
116 116-01 B 56/46 65/55 N
119 119-01 B 57/50 65/55 N
119 119-06 B 57/49 65/55 N
123 123-01 C 61/54 70/60 N
136 136-04 B 57/47 65/55 N
139 139-01 B 59/49 65/55 N
142 142-06 B 58/49 65/55 N
143 143-06 B 57/49 65/55 N
149 149-03 B 58/48 65/55 N
149 149-04 B 56/46 65/55 N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] NAP – Noise Assessment Point
[3] The maximum noise level are presented for [Daytime and evening time Leq 30 min / night-time
Leq 30 min].
[4] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise
criterion is proposed according to IND-TM.
Table 4.30d Predicted cumulative rail and fixed plant noise impact for selected representative NSR (full occupation after Phase 4)
ID[1] NAP[2] ASR
Max. Predicted Noise
Level, dB(A) Criteria, dB(A)
Mitigation
Measures
Required [Y/N] Leq 30 min[3] Leq 30 min
[4]
103 103-01 C 61/55 70/60 N
108 108-06 B 57/47 65/55 N
110 110-01 C 58/55 70/60 N
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ID[1] NAP[2] ASR
Max. Predicted Noise
Level, dB(A) Criteria, dB(A)
Mitigation
Measures
Required [Y/N] Leq 30 min[3] Leq 30 min
[4]
113 113-01 C 58/54 70/60 N
116 116-01 B 56/46 65/55 N
119 119-01 B 57/50 65/55 N
119 119-06 B 57/49 65/55 N
123 123-01 C 61/54 70/60 N
136 136-04 B 57/47 65/55 N
139 139-01 B 59/49 65/55 N
142 142-06 B 58/49 65/55 N
143 143-06 B 57/48 65/55 N
149 149-03 B 57/47 65/55 N
149 149-04 B 55/45 65/55 N
407 407-01 B 53/44 65/55 N
422 422-07 C 60/58 70/60 N
Notes:
[1] The assessment only includes NSRs which rely on opened windows for ventilation.
[2] NAP – Noise Assessment Point
[3] The maximum noise level are presented for [Daytime and evening time Leq 30 min / night-time
Leq 30 min].
[4] The criteria are presented for [Daytime and evening time criterion / night-time criterion]. Noise
criterion is proposed according to IND-TM.
4.7.7.3 Table 4.15 has presented the packages of noise mitigation measures
that are recommended for the current building design. Nevertheless,
depends on the evaluation during subsequent detailed design, the
future developers may wish to explore any alternative approaches to
achieve equivalent or even better environmental performance. They
would need to demonstrate that the noise criteria can still be achieved
by adopting their packages of mitigation measures.
4.8 Helicopter Noise Assessment
4.8.1 Helicopter Noise Impact Assessment Methodology
4.8.1.1 Helicopter noise is considered as a ‘point’ source and has been
evaluated based on standard acoustic principle of point source
propagation. Corrections have been applied for the distance
attenuation, façade, barrier or topographical effect where applicable.
Agreement with the Director on the methodology and computational
model has been obtained prior to the commencement of the assessment.
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4.8.2 Identification of Helicopter Noise Impact
Identification of Assessment Area and Noise Sensitive Receivers
4.8.2.1 For helicopter noise assessment, the assessment area includes those
within 130m from site boundary (see Appendix 4.26 for the
assessment area determination). Representative Planned NSRs have
been selected from Table 4.8 and are summarised in the table below
and illustrated in Figure 4.10. Agreement with the Director on the
assessment area and noise assessment points has been obtained prior
to the commencement of the assessment.
Table 4.31 Representative planned NSRs for helicopter noise assessment
ID[1] Uses[2] No. of Domestic Storey NAP[3][4]
119 R 15 119-01
201 R 16 201-03
217 R 19 217-01
309 R 22 309-03
315 R 20 315-01
410 R 22 410-01
422 R 22 422-07
802 E 1 802-02
Notes:
[1] The assessment only includes include NSRs which rely on opened windows for
ventilation.
[2] R – Residential Premises, E – Educational Institutions
[3] NAP – Noise Assessment Point.
[4] First layer of NSRs within 130m assessment area is included. Appendix 4.26
shows the assessment area determination.
Inventory of Noise Sources
4.8.2.2 As discussed in Section 4.2.3, the existing helicopters of GFS (Super
Puma AS332 and EC 155 B1) will be replaced by Airbus Helicopter
H175. In addition, MD 902 Explorer will be used for flight between
HKIA and Kowloon, AgustaWestland AW139, Sikorsky S-76 and
Sikrosky S-92A will be used for flight between HKIA and Macau,
HKIA and China respectively. Therefore, it is anticipated that only
Airbus Helicopter H175 and MD 902 Explorer would travel along the
north coast of Lantau near the proposed development.
4.8.2.3 The helicopter noise source term based on the Flight Manual Airbus
Helicopter H175, Technical Description MD902 Explorer have been
confirmed with GFS and relevant parties.
4.8.2.4 The International Civil Aviation Organisation (ICAO) has a stipulated
reference noise standard for helicopters with lateral movement for
different flying modes including approach, take-off and flyover.
Besides, Type-Certificate Data Sheet for Noise Airbus Helicopter
H175 and Technical Description MD 902 Explorer have presented a
measured noise level for the types of helicopters of concern. A
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comparison of the measured noise levels to the maximum limit as
specified in the ICAO are shown in table below. Agreement with the
Director on the information of the helicopter noise characteristics has
been obtained prior to the commencement of the assessment.
Table 4.32 Helicopter noise data with lateral movements
Flying
Mode
EPN, dB
MD 902 H175
[1] [2] [1] [2]
Approach 89.6 95.3 95.1 98.8
Take-off 85.4 94.5 89.8 95.8
Flyover 83.5 93.3 91.0 93.8
Notes:
[1] Measured noise levels according to the European Aviation Safety Agency Type-
Certificate Data Sheet of Airbus Helicopter H175 and Technical Description
MD 902 Explorer.
[2] ICAO reference limit.
[3] Lmax = EPNdB-13, with reference to “Transportation Noise Reference Book”
(Nelson, 1987), Equation (6a) “Conversion Relationship of Aircraft Noise
Indices between WECPNL and DENL” (Proceedings of 20th International
Congress of Acoustics), Section 2.1 “Consideration to noise index for
evaluating airport noise in Japan” (The 33rd International Congress and
Exposition on Noise Control Engineering) and Section 2 “Evaluation and
Prediction of Airport Noise in Japan” (Journal of the Acoustical Society of
Japan).
4.8.2.5 The GFS helipad and HKBAC on Airport Island are about 7km away
from the proposed development. Due to the large separation distance
from the proposed development, helicopter noise impact will be
mainly generated by flyover mode.
4.8.2.6 Under normal operation, Silvermine is the normal helicopter entry exit
route from the HKIA during day-time, evening period and night-time.
Aerodrome Traffic Zone (ATZ) via the Visual Flight Rules (VFR)
Holding Area at Pak Mong, which is about 500m west of SHD.
Therefore, helicopter will flyover outside the 130m assessment area
and helicopter noise impacts are not anticipated. Under adverse
weather, however, the helicopter from GFS would need to fly along
North Lantau Expressway (NLE), which will be altered after
implementation of Topside development, at an average height of
approximately 500 feet (approx. 150m) above mean sea level and
130m north of SHD flight corridor along the coastline of North Lantau
between Pak Mong and the Toll Plaza of the Tsing Ma Bridge. In
addition, as advised by CAD, a helicopter shall not fly closer than 500
feet (approx. 150m) to any person, vessel, vehicle or structure.
Therefore, helicopter shall not fly closer than 150m under adverse
weather or for emergency uses at night-time. With Airbus Helicopter
H175 (EPD, 93.8dB under flyover mode) at 150m separation from
SHD and according standard acoustic principle of point source
attenuation, Lmax would be less than 85dB(A) including 3dB(A) facade
correction which is within the helicopter noise criteria.
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4.8.2.7 As discussed in Section 4.2.3.11, the partial relocation of GFS
emergency flying services to a forward base is still yet to be finalized.
Hence, the helicopter noise impact assessment is still based on the
worst case scenario on flyover mode (i.e. Airbus Helicopter H175). To
provide sufficient setback distance for achieving the Lmax 85 dB(A)
noise criterion, 130m away from the flight route for the routine
services under normal condition (see Appendix 4.26). As sufficient
setback distance is allowed, potential helicopter noise impacts are not
anticipated.
4.8.3 Prediction and Evaluation of Helicopter Noise Impact
Scenarios
4.8.3.1 The helicopter noise impact assessment of the Project is conducted
with respect to the proposed criteria and EPD agreement of
unmitigated scenario and mitigated scenario on the worst operation
mode (i.e. flyover mode with helicopter type Airbus Helicopter H175
with maximum noise emission) representing the maximum noise
emission. The operation modes have been confirmed with GFS.
Agreement with the Director on the operation mode has been obtained
prior to the commencement of the assessment.
Prediction of Noise Impact
4.8.3.2 The predicted helicopter noise levels at the representative NSRs are
shown in table below. Details are provided in Appendix 4.27.
Table 4.33 Predicted helicopter noise impacts
ID[1] Uses[2] NAP [3][4]
Criteria,
Lmax dB(A)
Max. Predicted
Daytime Lmax,
dB(A) [5]
Exceedance
[Y/N]
119 R 119-01 85 84 N
201 R 201-03 85 84 N
217 R 217-01 85 84 N
309 R 309-03 85 84 N
315 R 315-01 85 84 N
410 R 410-01 85 84 N
422 R 422-07 85 84 N
802 E 802-02 85 84 N
Notes:
[1] The assessment only includes include NSRs which rely on opened windows for
ventilation.
[2] R – Residential Premises, E – Educational Institutions
[3] NAP – Noise Assessment Point
[4] First layer of NSRs within 130m assessment area is included. Appendix 4.26
shows the assessment area determination.
[5] Bolded values mean exceedance of the relevant noise criteria.
4.8.3.3 The maximum predicted noise levels at concerned NSRs is 84dB(A)
as shown in Table 4.33. From the above table, all planned NSRs will
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be within daytime noise criteria of Lmax 85dB(A). The Lmax contour is
shown in Appendix 4.27. Since there is no relevant noise criteria in
the EIAO-TM and overseas / international guidelines applicable to
emergency helicopter operation in the in evening and night-time
periods, the helicopter noise impact during evening and night-time
periods would not be quantitatively assessed. Furthermore, night-time
operation is only expected for emergency uses, and the flight-path
along Silvermine will be taken unless during adverse weather. As
discussed above, helicopter will not fly closer than 150m during
adverse weather. Adverse helicopter noise impacts are not anticipated.
4.8.4 Mitigation of Helicopter Noise Impact
Direct Mitigation Measures
4.8.4.1 As discussed above, the maximum predicted noise levels would be
84dB(A) and comply with relevant noise criteria. Therefore, direct
mitigation measures are not required.
Indirect Mitigation Measures
4.8.4.2 As discussed above, the maximum predicted noise levels would be
84dB(A) and comply with relevant noise criteria. Therefore, indirect
mitigation measures are not required.
4.8.5 Evaluation of Residual Helicopter Noise Impact
4.8.5.1 Adverse helicopter noise impacts are not expected and adverse residual
noise impacts are therefore not anticipated.
4.9 Marine Traffic Noise Assessment
4.9.1.1 As discussed in Section 2, there is no statutory requirement for marine
traffic noise. The construction of the Project would not require any
marine works and hence construction vessels for marine works are not
anticipated. Besides, there are neither existing nor planned marine
routes within the 300m assessment area. Agreement with the Director
on the assessment has been obtained prior to the commencement of the
assessment. Hence, marine traffic noise impacts are not anticipated
during both construction and operational phases.
4.10 Noise Implications Caused by Elements to be Implemented by SHO and SHD Replanning Works
4.10.1.1 As discussed in Section 1.3, the latest implementation strategy has
recommended the following items in EIA Study Brief ESB-296/2016
will be separately implemented by the SHO and SHD Replanning
Works project which will be addressed in the Railway EIA.
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Railway depot replanning works within the existing site boundary;
Podium deck and property enabling works for the topside development;
A new SHO, as well as local access roads and emergency vehicular access (EVA); and
Provision of the sewerage network with sewage pumping station to cater sewage generated by SHO and SHD Replanning Works.
4.10.1.2 According to Railway EIA findings and recommendations, all the
practicable measures to avoid, minimise and mitigate the noise
generated from the SHO and SHD Replanning Works have been
exhausted. The Railway EIA has also recommended a series of
mitigation measures similar to those as described in Section 4.3.4,
Section 4.4.4, Section 4.5.4, and Section 4.7.4 for implementation.
The Railway EIA has concluded that, with the implementation of those
mitigation measures, adverse noise implications are not anticipated.
4.11 Conclusion
4.11.1 Construction Phase
4.11.1.1 Construction noise impact assessment associated with the use of
Powered Mechanical Equipment (PME) for different phases of
construction has been conducted. With the implementation of practical
mitigation measures including good site management practices, use of
movable noise barrier and full enclosure, use of “quiet” plant and
working method, construction noise impacts at all representative
planned residential noise sensitive uses would be controlled to
acceptable levels. For the representative planned educational
institutions, the construction noise impacts during school normal and
examination periods would also comply with the relevant criteria.
Although there are no criteria for country parks, the mitigated noise
levels are predicted to be low at the selected assessment points and
adverse construction noise impacts are therefore not anticipated.
4.11.2 Operational Phase
4.11.2.1 Operation road traffic noise impacts on planned and existing noise
sensitive uses within 300m assessment area have been predicted.
Results indicate that the noise impacts on representative planned NSRs
can be mitigated by a combination of noise mitigation measures
including acoustic windows, fixed glazing and arrangement of noise
tolerant use in some buildings to within the respective noise criteria.
Therefore, adverse road traffic noise impacts are not anticipated.
4.11.2.2 Fixed noise assessment has been conducted. Noise impact from
planned fixed plant could be effectively mitigated by implementing
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noise control measure at source during project implementation stage.
With the adoption of the proposed maximum permissible SWLs for the
proposed fixed plant, the noise levels at representative planned NSRs
due to both the existing and planned fixed plants complies with the
relevant noise criteria. For existing NSR (i.e. Lantau North (Extension)
Country Park), the predicted noise level due to both the existing and
planned fixed plants is 59 dB(A). Given the transient nature of visitor
using hiking trails, adverse fixed noise sources impacts are not
anticipated.
4.11.2.3 According to the approved 3RS EIA (AEIAR-185/2014) findings, the
predicted NEF 25 contours of the 3Rs would be away from site
boundary in Year 2011, Year 2021, Year 2030 and Year 2032. Adverse
aircraft noise impacts are not anticipated. Although not under the
statutory requirements, the use of acoustic insulation in form of well-
gasketted window to enhance the indoor living environment would be
reviewed in the detailed design stage, as mentioned in Section 2.4.3.13
of this report.
4.11.2.4 Rail noise assessment has been conducted. Rail noise impacts from
shunting tracks entering/ leaving from SHD are anticipated, rail noise
impact assessment results indicate that the noise impacts on NSRs
would comply with the statutory requirements with noise mitigation
measure including sections of canopy along the podium edge. For
existing NSR (i.e. Lantau North (Extension) Country Park), the
predicted noise level is 69 dB(A). Given the transient nature of visitor
using hiking trails, adverse rail noise impacts are not anticipated.
4.11.2.5 Cumulative fixed and rail noise assessment has been conducted. With
the implementation of the recommended mitigation measures,
cumulative fixed and rail noise impacts on NSRs would comply with
the relevant noise criteria.
4.11.2.6 Helicopter noise impacts on the planned noise sensitive uses have been
predicted. According to the latest information, the flight path of
helicopters would maintain sufficient separation distance from noise
sensitive uses. Adverse helicopter noise impacts are not anticipated.
4.11.2.7 Since there is no existing and planned marine route within the 300m
assessment area, marine traffic noise impacts are not anticipated.
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