An EIA Report has been prepared for Shatin to
Central Link - Stabling Sidings at Hung Hom Freight
Yard [SCL (HHS)] to satisfy the requirements given in the EIA Study Brief
ESB-233/2011 and the Technical Memorandum on Environmental Impact Assessment
Process. All the latest design information has been incorporated into the EIA
process. Aspects that have been considered in this EIA Report include:
·
Consideration of Alternative options
·
Project Description and construction methodology
·
Cultural Heritage
·
Ecology
·
Landscape and Visual
·
Construction Dust
·
Airborne Noise
·
Groundborne Noise
·
Water Quality
·
Waste Management
·
Land Contamination
·
Environmental Monitoring and Audit
All the existing and planned environmental
sensitive receivers in the vicinity of the alignment have been identified by
conducting site surveys and reviewing relevant planning information. The receivers identified include residential
blocks, educational institutions and quarters. These receivers have all been
considered in this EIA study.
The key assessment assumptions, limitation of
assessment methodologies and all related prior agreements with EPD on
assessment of different environmental aspects are given in Appendix
15.1.
Training stabling
sidings is an essential element for the operation of the SCL (TAW – HUH) to accommodate trains for deployment
to meet the demand during morning peak hours.
In non-operational hours, the sidings would be used for train
stabling. Maintenance works, such as
regular cleaning and inspection, but not for major repairing works, would be
conducted during non-operational hours as well.
During the design process, a number of alternatives
have been identified and their suitability has been investigated. Various
alternatives have been developed and factors which include operational
requirements, engineering factors, views from the public as well as
environmental benefits and impacts have been considered during the design
process.
A site search
exercise has therefore been conducted to identify possible sites for the train
stabling sidings. All the existing depots that are managed by the Project
Proponents and other sites in the vicinity have been critically examined. The
site search has concluded no existing depots could be adopted and it is also
difficult to identify other appropriate sites or alternatives. Among the
possible sites, the Diamond Hill CDA Site and the former Hung Hom Freight Yard Site are considered as feasible locations
for train stabling sidings in terms of operational requirements and engineering
factors.
The environmental
implications of DHS and the HHS options have been reviewed (see Section
2). It is found that, based on the
assessment findings of the EIA report of SCL (TAW-HUH) and this EIA, providing
the stabling sidings at either DHS or HHS would both be considered as
environmentally acceptable and could be adopted to support the operation of SCL
(TAW-HUH).
The train stabling sidings at former Hung Hom
Freight Yard is mostly within the footprint of the existing railway facilities.
All the siding tracks facilities would also be accommodated underneath the existing
deck of Hung Hom Station to avoid noise and visual
impact as much as possible. Although the new fan area to the north of the HHS
would inevitably generate additional noise and visual impacts, direct
mitigation measures including semi-enclosure and vertical noise barriers with
appropriate aesthetic design would be implemented to alleviate any impacts that
may be generated. Although engineering considerations are also being given, it
is considered that the arrangement of having only the HHS would be slightly
preferred from environmental perspective.
According to the latest programme, the construction works for the Project would commence in 2012 with completion in 2018.
15.3.1 Train Stabling Sidings and Hung Hom Station
HHS and HUH are located within the densely
built up area in Hung Hom. The lack of space
available at the surface for locating HHS and HUH and the need of connecting to
future SCL (TAW-HUH) alignment poses constraint on the location and design of
HHS and HUH and thereby limited the options of construction methods available.
The tentative construction methodologies for
the HHS and HUH are summarized below.
Table15.1: Tentative
Construction Methods for HHS and HUH
|
Key Design Elements |
Tentative Construction Methodologies |
|
HHS |
Train stabling sidings under the existing
deck of Hung Hom Station
Fan area to the north of the train stabling
sidings
Shunt neck to the north of the train
stabling sidings
Launching and retrieval tracks to the south
of the train stabling sidings
|
|
HUH Modification |
Hung Hom Station
and Associated Plant Rooms
Ventilation shafts and plant rooms
Others such as utility diversion ·
Typical smaller scale excavation, concreting etc |
15.3.2
DIH and KAT
Both DIH and KAT would be underground. Their tentative construction
methodologies and associated entrances are summarized in Table 15.2.
Table 15.2: Tentative
Construction Methods for DIH and KAT
|
Key Design Elements |
Tentative Construction Methodologies |
|
KAT |
Underground
Station
Underground
Refuge Sidings
KAT
Associated Tunnel
|
|
DIH
|
Underground Station
Others such as utility diversion
|
Built heritage survey and archaeological survey have been conducted
within the study area of the Project. Some archaeological sites and three
historical buildings are identified within the Study Area. However, there are no
Sites of Cultural Heritage (namely Declared Monuments) in the Project Study
Area.
Though the archaeological survey at former
The construction of DIH would affect the
Former Royal Air Force Hanger and the Old Pill Box within the former
Overall, it is considered that the cultural
heritage impacts in the construction and operation phases are acceptable with
mitigation measures.
Ecological considerations have been integrated into
the development of the Project. Literature reviews of existing information
with supplement findings from recent field surveys identified that terrestrial
habitats within the assessment area are of low ecological value.
Terrestrial
habitats within the Study Areas are largely urban/ residential areas with high
disturbance and low ecological value. Habitats affected will include 0.44 ha of
channelised watercourse, 1.35 ha grassland, 1.62 ha
plantation and 40.08 ha urban/ residential area.
Direct
and indirect ecological impacts arising from the Project during the
construction and operational phases have been identified and evaluated. Impacts
are considered to be of low significance.
Other indirect impacts arising from the Project would be temporary and
considered as negligible in nature. Overall, no significant and unacceptable
ecological impacts to terrestrial resources were anticipated in this
assessment.
The
proposed works will inevitably result in some landscape and visual impacts
during construction and operation phases.
These impacts have been minimized through careful consideration of
alternatives, minimization of works sites, incorporation of aesthetic external
designs and landscape treatments of proposed aboveground structures which
include ventilation shafts, CLP transformer plant, noise semi enclosure and
vertical noise barriers at Hung Hom, as well as
entrances and ventilation shafts at Kai Tak and Diamond Hill Stations.
Having
reviewed the Outline Zoning Plans within the Study Area, it is considered that
the proposed Project would fit in well with the current and future planning
settings and would not conflict with statutory town plans of the areas.
Approximately
405 existing trees will be affected by the proposed works, of which
approximately 45 trees will be transplanted and approximately 360 trees will be
felled. The affected trees vary from
small to mature size. None of these are
Registered Old and Valuable Trees. There
are no rare species or endangered species but only common species. Under the proposed scheme for the Project,
opportunities for tree compensation within the Project boundary has been fully
explored and incorporated in the proposed mitigation measures as much as
practicable. Tree removal application
and compensatory planting proposal will be prepared and submitted to seek
approval from relevant authorities in accordance with ETWBTC 3/2006
requirements, prior to construction of the Project.
There
would not be any temporary and permanent loss of existing open space due to the
Project. All landscape areas that will
be temporarily alienated will be reinstated on a like to like basis after
completion of temporary works.
Meanwhile, in addition to the compensated trees, new landscape resources
such as green roof and climbers are proposed as far as practicable to optimize
greening opportunities within the Project boundary. It is considered that with the proposed
compensated trees and the proposed new landscape resources, the overall
residual impact on existing trees and greenery would be reduced to an
acceptable level.
The
proposed works are within Transport Corridor at Hung Hom,
City Centre of Kai Tak Development and CDA site in Diamond Hill. During construction phase, there would be
moderate to insubstantial residual impact.
The residual impact would be further reduced to slight to insubstantial
in Day 1 and Year 10 of Operation.
Due
to the construction works proposed in Hung Hom, Kai Tak and Diamond Hill, there would be inevitably slight to
substantial residual visual impact during construction phase. With the implementation of proposed
mitigation measures, the residual impact in Day 1 and Year 10 of Operation will
be reduced to slight to insubstantial.
Overall,
it is considered that the residual landscape and visual impacts of the proposed
project are considered acceptable with mitigation measures to be implemented
during construction and operation phases.
Potential
dust impact may be generated from the soil excavation activities, backfilling,
site erosion, storage of spoil on site, transportation of soil etc.
Quantitative fugitive dust assessments have been conducted, taking into account
the cumulative impact caused by nearby concurrent projects.
Assessment
results suggested that all the predicted TSP concentrations at identified ASRs would comply
with the respective criteria. Adverse residual air quality
impacts are not expected.
Effective
dust control can also be achieved by implementing the procedures and
requirements given in the Air Pollution Control (Construction Dust) Regulation
and in accordance with the EM&A programme during construction. With the implementation of dust suppression
control and good site practice, adverse fugitive dust impact is not
anticipated.
15.8 Airborne Noise Impact
Potential
construction noise impacts would be caused by the various construction
activities including excavation, backfilling and construction of superstructure
etc.
Construction
noise assessment has concluded that the unmitigated construction noise impacts
would be high at the neighbouring NSRs.
Suitable noise mitigation measures have been identified which could
reduce the noise impacts at most of the NSRs. Careful selection of construction
equipment and working methods including the use of smaller, electrically driven
and quiet plant are adopted, where practicable. Other measures including good
site practice, the use of site hoarding, and installation of movable barriers
and sequential operation of construction plant have been recommended. With the incorporation of the recommended
mitigation measures, the predicted construction noise levels due to the Project
would comply with the stipulated noise criterion at all the NSRs.
The
predicted cumulative noise levels at most of the NSRs would comply with the
corresponding noise criteria, except for one NSR near to the works areas in
north of HHS. However, the EIA study of concurrent projects indicated that all practicable mitigation measures are exhausted and the residual
impacts are minimised.
Operational noise impacts associated
with railways and fixed noise sources have also been investigated. Semi-noise enclosures and vertical noise
barriers would be required for the at-grade fan area and the shunt neck to the
north of the HHS to mitigate airborne railway noise.
Fixed
noise sources during the operational phase include station plant building and
ventilation shafts. Operational noise impacts can be effectively mitigated by
implementing noise control treatment (e.g. silencers, acoustic louvers and
acoustic enclosures) at source during the design stage and hence adverse
residual operational airborne noise impacts are not anticipated.
Potential
groundborne noise sources during the construction phase have been
identified. The noise impacts on
neighbouring sensitive receivers have been quantified. Results indicate that the predicted impacts
are within the statutory requirements and hence mitigation measures are not
required. There are no adverse residual construction groundborne noise impacts.
Potential
groundborne noise would be caused by the trains running along the alignment and
shunt neck of HHS. The predicted groundborne noise impacts during the operational phase are within the
statutory requirements and hence mitigation measures are not required.
15.10.1 Construction Phase
Potential
water pollution sources have been identified as construction runoff, sewage
from site workforce, drainage diversion and groundwater contamination.
Mitigation measures including covering excavated materials, providing
sedimentation tanks on-site, as well as other good construction practices are
recommended to mitigate any adverse water quality impacts.
The
operational water quality impact for track run-off and tunnel seepage will have
no adverse water quality impact with the incorporation of mitigation measures
in the design.
15.11.1 Construction Phase
The
quantity and proposed programme for the generation of waste during the
construction phase have been estimated. Measures, including the opportunity for
on-site sorting, reusing excavated fill materials (stored in stockpiles) etc,
have been maximised in the construction methodology to minimise the surplus
materials to be disposed off-site at designated locations. The annual disposal
quantities for C&D materials and their disposal methods have also been
assessed. Certain amounts of surplus of rock and spoils materials would be accepted by other
projects, such as Hong Kong Boundary Crossing Facilities or disposed to
Mainland and Fill Banks.
The types
and quantities of waste that would be generated during the operational phase
are assessed. Recommendations have been
made to ensure proper treatment and disposal of these wastes.
Relevant
documents of land contamination assessment under SCL (MKK-HUH) and SCL
(TAW-HUH) have been reviewed as they both shared the same assessment area with
the Project. A site survey was also conducted to verify previous findings/ desktop review and to
visit the track area at the eastern portion of Hung Hom
Works Site which have not been surveyed in previous land contamination studies.
A
Contamination Assessment Plan (CAP) has also been prepared and submitted to EPD
on 26 August 2011 to set out the requirements for a contamination evaluation of
the Study Area of the Project. It is confirmed in the CAP that no adverse land
contamination impacts would be anticipated within or in close proximity to the Study Area of the Project.
It is
recommended to implement an EM&A programme throughout the entire
construction period to regularly monitor the environmental impacts on the
neighbouring sensitive receivers. All
the requirements (including cultural heritage, ecology, landscape & visual,
dust, airborne and groundborne noise, water quality, waste and land
contamination) in the EM&A Manual shall be complied with.
An
Environmental Mitigation Implementation Schedule has also been included in the
EM&A Manual to summarise all the measures, the implementation location,
time frame, agency etc.
The EIA has been conducted based on the best and latest available
information during the course of the EIA study. The findings of this EIA have
provided information on the nature and extent of environmental impacts arising
from construction and operation of the Project. The EIA has, where appropriate,
identified mitigation measures to ensure compliance with environmental
legislation and standards.
Overall, this EIA has demonstrated general compliance with the
environmental standards and legislation with the implementation of the proposed
mitigation measures during the construction and operational phases. This EIA
has also demonstrated general acceptability of the residual impacts and thus
the population and environmentally sensitive resources in the vicinity of the site
would be sufficiently protected. Environmental monitoring and audit mechanisms
have been recommended for the construction and operation of the Project, where
necessary, to verify the effectiveness of the recommended mitigation measures.
A summary of the environmental impacts associated with the Project is presented
in Table 15.3.
Table 15.3 Summary of Environmental
Impacts Associated with the Project
|
Sensitive Receivers/ Assessment Points |
Impact Prediction Results (Without Mitigation) |
Key Relevant Standards/ Criteria |
Extents of Exceedance (Without Mitigation) |
Impact Avoidance Measures/ Mitigation Measures |
Residual Impacts (After Implementation of Mitigation Measures) |
|
Cultural Heritage |
|||||
|
Construction Phase |
|||||
|
Archaeological Sites |
·
The presence of the sparse Tang/ Song Dynasty
layer extends to the north-eastern part of the former Tai Hom
Village site would be directly impacted by the construction of the proposed
DIH at Diamond Hill Lung ·
The remains of the |
·
Guidelines for Cultural Heritage Impact
Assessment ·
EIAO-TM Annex 10 and Annex 19 |
·
Not Applicable |
·
A survey-cum-excavation works to be conducted
prior to the construction works at the former ·
A buffer zone for Lung Tsun
Stone Bridge and Former Kowloon City Pier (as shown in Figure 4.1.2) would be maintained |
·
No adverse residual impacts would be anticipated. |
|
Built Heritages |
Former Royal Air
Force Hangar ·
The entire structure of the Former Royal Air
Force Hangar will be directly impacted by the construction of the DIH Old Pillbox ·
The proposed east end of the DIH station box will
encroach onto the footprint of the Old Pillbox Stone House ·
There will not be any impact on the Stone House
as it is located outside the temporary at-grade works sites |
·
Guidelines for Cultural Heritage Impact
Assessment ·
EIAO-TM Annex 10 and Annex 19 |
·
Not Applicable |
Former Royal Air
Force Hangar ·
Documentation prior to disassembling, temporary
storage of portions of historical interest ·
Display of retained portions and a model (as per
the conservation plan) within CDA site Old Pillbox ·
Documentation prior to disassembling, temporary
storage ·
Reinstatement (as per the conservation plan)
within CDA site |
·
No adverse residual impacts would be anticipated. |
|
Operational Phase |
|||||
|
Archaeological Sites |
·
Recommended mitigation measures would be conducted
prior to the construction and thus further mitigation measure during the
operational phase is therefore not considered necessary ·
No impacts anticipated during operation phase of
the Project due to its considerable distance from proposed KAT and refuge
sidings |
·
Guidelines for Cultural Heritage Impact
Assessment ·
EIAO-TM Annex 10 and Annex 19 |
·
Not Applicable |
·
No mitigation measures are recommended during
operational phase. ·
No mitigation measures are recommended during
operational phase. |
·
No adverse residual impacts would be anticipated. |
|
Built Heritages |
Former Royal Air
Force Hangar ·
As detailed photographic and cartographic records
are recommended to document the Hangar prior to disassembling them, no
further mitigation measure is required during the operational phase of the
Project Old Pillbox ·
As detailed photographic and cartographic records
are recommended to document the Pillbox prior to disassembling them, no
further mitigation measure is required during the operational phase of the
Project |
·
Guidelines for Cultural Heritage Impact
Assessment ·
EIAO-TM
Annex 10 and Annex 19 |
·
Not Applicable |
Former Royal Air
Force Hangar ·
No mitigation measures will be required for the
built heritage Old Pillbox ·
No mitigation measures will be required for the
built heritage |
·
No adverse residual impacts would be anticipated. |
|
Ecology |
|||||
|
Construction Phase |
|||||
|
Ecological resources within and in the vicinity of the Project
area |
Habitat
Loss (Project Site) ·
Habitats affected will include 0.44 ha of channelised
watercourse, 1.35 ha grassland, 1.62 ha plantation and 40.08
ha
urban/ residential area Tree
Felling ·
Disturbance ·
Indirect
impacts which cause local disturbance to habitats and fauna Water
Quality ·
Indirect impact associated with construction site run-off to channelised watercourse and associated fauna. |
·
EIAO-TM Annex 8 and Annex 16 ·
Forests and Countryside Ordinance (Cap. 96) ·
Wild Animals Protection Ordinance (Cap. 170) ·
Country Parks Ordinance (Cap. 208) ·
Protection of Endangered Species of Animals and
Plants Ordinance (Cap. 586) ·
IUCN Redlist |
·
Not Applicable |
·
Habitat loss restricted to areas of low
ecological value ·
Tree compensation will be made according to ETWB
TCW No. 3/2006 as far as practicable ·
Good site practice |
·
Residual ecological impacts resulting from the
proposed works would largely be limited to the loss of relatively low
ecological value habitats. Residual impacts on terrestrial ecology caused
from the Project are considered as very minor and acceptable |
|
Operational Phase |
|||||
|
Ecological resources within and in the vicinity of the Project
area |
Flora
and fauna ·
Indirect |
·
EIAO-TM Annex 8 and Annex 16 ·
Forests and Countryside Ordinance (Cap. 96) ·
Wild Animals Protection Ordinance (Cap. 170) ·
Country Parks Ordinance (Cap. 208) ·
Protection of Endangered Species of Animals and
Plants Ordinance (Cap. 586) ·
IUCN Redlist |
·
Not Applicable |
·
No mitigation would be required |
·
No adverse residual impacts would be anticipated. |
|
Landscape and Visual |
|||||
|
Construction Phase |
|||||
|
Landscape Resources (LRs), Landscape Character
Areas (LCAs) within the Study Area Visually
Sensitive Receivers (VSRs) within the Primary Zone of Visual Influence |
·
Substantial to insubstantial significance on LRs
within the Study Area ·
Moderate to insubstantial significance on LCAs
within the Study Area ·
Substantial to slight significance on VSRs within
Primary Zone of Visual Influence |
·
EIAO (Cap. 499). ·
EIAO-TM Annex 10 and Annex 18 ·
ETWB TC(W) No. 2/2004 ·
ETWB TC(W) No. 3/2006 |
·
Not Applicable |
·
CM1 - Decorative Hoarding ·
CM2 - Management of facilities on work sites ·
CM3 - Tree Transplanting |
·
Substantial to insubstantial significance on LRs
within the Study Area ·
Moderate to insubstantial significance on LCAs
within the Study Area ·
Substantial to slight significance on VSRs within Primary Zone of
Visual Influence |
|
Operational Phase |
|||||
|
Landscape Resources (LRs), Landscape Character Areas
(LCAs) within the Study Area Visually
Sensitive Receivers (VSRs) within the Primary Zone of Visual Influence |
·
Substantial to insubstantial significance on LRs
within the Study Area ·
Slight to insubstantial significance on LCAs
within the Study Area ·
Moderate to slight significance on VSRs within
Primary Zone of Visual Influence |
·
EIAO (Cap. 499). ·
EIAO-TM Annex 10 and Annex 18 ·
ETWB TC(W) No. 2/2004 ·
ETWB TC(W) No. 3/2006 |
·
Not Applicable |
·
OM1 -Compensation Tree Planting ·
OM2a - Screen Planting ·
OM2b - Landscape Re-instatement ·
OM3 - Aesthetic landscape and architectural
treatment on Station / Entrances/ Ventilation Shaft ·
OM5 - Re-instatement of excavated area ·
OM7 - Aesthetic landscape and architectural
treatment for DIH ·
OM8 - Roof greening of large built structures ·
OM9 - Aesthetic design on Noise Barrier |
·
Slight to insubstantial significance on LRs
within the Study Area in Year 10 of operation ·
Slight to insubstantial significance on LCAs
within the Study Area in Year 10 of operation ·
Slight to
insubstantial significance on VSRs within Primary Zone of Visual Influence in
Year 10 of operation |
|
Construction Dust |
|||||
|
Construction Phase |
|||||
|
Existing residential, premises, educational,
industrial, clinic/ home for the aged, worship, government, institution and
community and performance art centres in Hung Hom, Kai Tak and Diamond Hill Future residential premises in Hung Hom and Kai Tak area 50 assessment points (refer to Figures 7.1.1-7.1.3) |
·
1-hour Average TSP Conc.: 294 – 3079 µg/m3 ·
24-hour Average TSP Conc.: 127 – 1102 µg/m3 ·
Annual Average TSP Conc.: 75.5 – 83.3 µg/m3 |
·
1-hr Average TSP Conc: ·
24-hr Average TSP Conc: 260 mg/m3 ·
Annual Average TSP Conc:
80 mg/m3 |
·
Exceed EIAO-TM (1-hr) criterion by up to
2579 µg/m3 |
·
Watering on the active works areas, exposed areas
and paved haul roads to reduce dust emission |
·
1-hour Average TSP Conc.: 137 – 484 µg/m3 ·
24-hour Average TSP Conc.: 89 – 202 µg/m3 ·
Annual Average TSP Conc.: 75.3 – 78.3 µg/m3 ·
No adverse residual 1-hr, 24-hr and annual dust impacts
would be anticipated. |
|
Operational Phase |
|||||
|
As the train will be electrically operated, air
quality impact is therefore not anticipated during operational phase. |
|||||
|
Airborne Noise |
|||||
|
Construction Phase |
|||||
|
Existing residential premises and educational institutions in Hung Hom and Diamond Hill Future residential premises in Kai Tak and Diamond Hill 24 assessment points (refer to Figures 8.1.1-8.1.3) |
·
Predicted noise levels would range from 62 to 90
dB(A) |
·
EIAO-TM
Annex 5 for non-restricted hours for domestic premises: 75 dB(A),
for educational institution is 70 dB(A) (65 dB(A) during examination period). |
·
Exceed the EIAO-TM noise criterion by up to 15
dB(A) |
·
Adoption of good site practices, optimisation of
construction methodology, quieter plant, temporary movable noise barriers
enclosure and acoustic mat to minimise construction noise impact |
·
The mitigated predicted noise levels for the
Project alone would range from 55 to 75 dB(A) ·
Residual cumulative impact of 3 dB(A) for 1 month
at NSR HUH-1-3 (Wing Fung Building) due to construction induced from the
Project, SCL (TAW-HUH), SCL(MKK-HUH), SCL(HUH-ADM) and KTE. It is considered
that all practicable measures have been exhausted to minimise the residual
impact. |
|
Operational Phase (Railway Noise) |
|||||
|
Existing residential premises in Hung Hom. 6 assessment points (refer to Figures 8.1.1) |
Daytime(Leq 30mins, dB(A)) ·
Predicted noise levels would be in the range of
38 to 53 dB(A) Night-time (Leq 30mins, dB(A)) ·
Predicted noise levels would be in the range of
38 to 53 dB(A) |
·
EIAO-TM Annex 5: ANL |
·
No exceedance was anticipated. |
·
Implementation of noise barrier and
semi-enclosure during the design stage |
·
No adverse residual impacts would be anticipated. |
|
Operational Phase (Fixed Noise) |
|||||
|
Existing residential premises in Hung Hom,
Kai Tak and Diamond Hill 21 assessment points (refer to Figures 8.1.1-8.1.3) |
·
Maximum sound power level was predicted to meet
the relevant noise criteria |
·
EIAO-TM Annex 5: ANL-5dB(A) |
·
No exceedance was anticipated. |
·
Louvers should be orientated away from adjacent
NSRs, preferably onto main roads which are less sensitive. ·
Direct
noise
mitigation measures including silencers, acoustic louvers and acoustic
enclosures should be allowed for in the design for the ventilation shafts,
stations and stabling sidings. ·
The
façade for these plant areas/ ventilation shafts should have adequate sound insulation
properties to minimise the noise emanating through the building fabric. |
·
No adverse residual impacts would be anticipated. |
|
Groundborne Noise |
|||||
|
Construction Phase |
|||||
|
Existing residential premise in Diamond Hill. 1 assessment point (refer to Figure 9.1.3) |
Daytime ·
36 dB(A) for residential NSR |
·
TM-Places ·
Daytime: 65 dB(A) for residential premises |
·
No exceedance was predicted. |
·
No mitigation would be required. |
·
No adverse residual impacts would be anticipated. |
|
Operational Phase |
|||||
|
Existing residential premises in Hung Hom
and Diamond Hill Future residential premises in Kai Tak and Diamond Hill. 10 assessment points (refer to Figures 9.1.1-9.1.3) |
Daytime (Leq 30mins, dB(A)) ·
Predicted operation ground-borne noise levels
would range from <20 to 43 dB(A) during daytime Nighttime (Leq 30mins, dB(A)) ·
Predicted operation ground-borne noise levels
would range from <20 to 40 dB(A) during
nighttime. |
·
TM-Places ·
Operational ground-borne noise criterion: 55
dB(A) during daytime, and 45 dB(A) during nighttime |
·
No exceedance was predicted. |
·
No mitigation would be required. |
·
No adverse residual impacts would be anticipated. |
|
Water Quality |
|||||
|
Construction Phase |
|||||
|
Kai Tak Nullah |
·
Water quality would be affected. |
·
EIAO-TM; ·
Water Pollution Control Ordinance (WPCO) (Cap.
358); ·
Technical Memorandum on Standards for Effluents
Discharged into Drainage and Sewerage Systems, Inland and Coastal Waters
(TM-DSS); ·
Practice Note for Professional Persons (ProPECC) PN 1/94 |
·
No exceedance was predicted. |
·
Appropriate and practicable mitigation measures
(see Section 10.7.1) have been
proposed to control the following: ·
Construction Runoff and Site Drainage; ·
Tunnelling Works and Underground Works; ·
Sewage Effluent; ·
Groundwater Seepage; and ·
Accidental Spillage |
·
No unacceptable water quality impacts would be
anticipated. |
|
Operational Phase |
|||||
|
Kai Tak Nullah |
·
Water quality would be affected. |
·
Relevant standards/ criteria stipulated under the
EIAO-TM, WPCO, TM-DDS and ProPECC 5/93 |
·
No exceedance was predicted |
·
Appropriate and practicable mitigation measures
have been proposed to control runoff from train stabling sidings (see Section 10.7.2) |
·
No unacceptable water quality impacts would be
anticipated. |
|
Waste |
|||||
|
Construction Phase |
|||||
|
Not applicable |
·
Inert C&D Materials from construction and
excavation works with a total volume of approximately 1,376,660m3 ·
36,930 m3 of non-inert C&D
material. ·
General refuse from workforce with a daily volume
of 300 kg ·
Chemical waste from equipment cleansing and maintenance activities |
·
EIAO-TM Annex 7 and Annex 15 ·
Waste Disposal Ordinance (Cap. 354); ·
Waste Disposal (Chemical Waste) (General)
Regulation (Cap. ·
Land (Miscellaneous Provisions) Ordinance (Cap.
28); ·
Public Health and Municipal Services Ordinance
(Cap. 132) - Public Cleansing and Prevention of Nuisances Regulation; ·
Waste Disposal (Charges for Disposal of
Construction Waste) Regulation (Cap. 354N); and ·
Dumping at Sea Ordinance (Cap. 466). |
·
Not applicable. |
·
C&D wastes would be reused (i.e. within the
site and other concurrent projects) as far as practicable before off-site
disposal |
·
No adverse residual impacts would be anticipated. |
|
Operational Phase |
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|
Not applicable |
·
Insignificant amount of general refuse,
industrial waste and chemical wastes to be generated from the cleansing and
maintenance activities of the Project. |
·
Waste
Disposal Ordinance (Cap. 354); and ·
Waste Disposal (Chemical Waste) (General)
Regulation (Cap. |
·
Not applicable. |
·
Employ
reputable waste collector to remove general refuse and industrial wastes from
the stations on a daily basis. ·
Follow
Code of Practice on the Packaging, Labelling and Storage of Chemical Waste in
handling of chemical waste. ·
Employ licensed waste collector and trip-ticket
system for the collection of chemical waste. |
·
No adverse residual impacts would be anticipated. |
|
Land Contamination |
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|
Construction Phase |
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|
Potential land contamination sites within the Project Area |
·
No soil or groundwater
contamination was identified and therefore no remediation is required. |
·
Section 3 (Potential Contaminated Land Issues) of
Annex 19 “Guidelines for Assessment of Impact on Sites of Cultural Heritage
and Other Impacts” of the EIAO-TM. ·
Guidance Note for Contaminated Land Assessment
and Remediation” ·
Practice Guide for Investigation and Remediation
of Contaminated Land ·
Guidance Manual for Use of Risk-based Remediation
Goals for Contaminated Land Management |
·
Not Applicable |
·
Not Applicable |
·
No adverse residual impacts would be anticipated. |
|
Operational Phase |
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|
Not Applicable |
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