8.1.1.1
This section presents the landscape and visual impact
assessment (LVIA) for the construction and operation of the Project to outline
and examine the landscape baseline conditions of existing landscape resources
(LRs) and the landscape character areas (LCAs), the visual amenity, visually
sensitive receivers (VSRs), and the planning and development control frameworks
within the assessment area. The
assessment area includes all areas within 500m from the Project boundary, while
the study area for the visual impact assessment is defined by the Visual Envelope
of the Project (i.e. a zone of visual influence which should include all areas
from which the proposed scheme of the Project can be seen). The assessment includes:
·
a definition of the scope and contents of the study,
including a description of the assessment methodology;
·
a review of the relevant planning and development control
framework;
·
a baseline study providing a comprehensive and accurate
description of the baseline landscape resources, landscape character areas and
visual sensitive receivers (VSRs);
·
identification of the potential landscape and visual impacts
and prediction of their magnitude and potential significance, before and after
the mitigation measures;
·
recommendations for appropriate mitigation measures and
associated implementation programmes; and
·
an assessment of the acceptability or otherwise of the
predicted residual impacts, according to the five criteria set out in Annex 10
of the Environmental Impact Assessment Ordinance Technical Memorandum (EIAO-TM).
8.1.1.2
The landscape and visual impact assessment follows the
criteria and guidelines as stated in Annexes 10 and 18 of the EIAO TM. Colour
photographs showing baseline conditions, and photomontages and illustrative
materials supporting conclusions are provided and the locations of all key viewpoints
have been clearly mapped. Photomontages at representative locations provide a comparison
between existing views, proposals on day 1 after completion with mitigation
measures, and in year 5 after completion with mitigation measures in accordance
with EIAO Guidance Note No. 8/2010.
8.1.1.3
This assessment covered both construction and operational
phases (that is, approximately 5-year operation period) of the Project. The assessment assumed that the
predicted findings are applicable to a short period of extension, for example,
a few years, from the 5-year Project operation.
8.2 Legislation, Standards and Guidelines
8.2.1.1
The LVIA has been conducted in accordance with the following
legislation:
·
Environmental Impact Assessment Ordinance (EIAO) (Cap 499);
·
Town Planning Ordinance (Cap 131);
8.2.1.2
Other relevant standards and guidelines include:
·
Annexes 10 and 18 of the EIAO-TM;
·
EIAO Guidance Note No. 8/2010;
·
Study on Landscape Value Mapping of
·
·
WBTC No. 7/2002 – Tree Planting in Public Works;
·
ETWB TC(W) No. 2/2004 Maintenance of Vegetation and Hard
Landscape Features;
·
ETWB TC(W) No. 11/2004 – Cyber Manual for Greening;
·
ETWB TC(W) No. 29/2004 – Registration of Old and Valuable
Trees, and Guidelines for their Preservation;
·
WBTC No. 25/92 - Allocation of Space for Urban Street Trees;
·
ETWB TC(W) No. 3/2006 – Tree Preservation; and
8.3.1
Landscape Baseline Review
and Impact Assessment
Identification and Examination of Baseline Landscape Resources
and Landscape Character Areas
8.3.1.1
A baseline survey of the existing landscape resources (LRs)
and landscape character areas (LCAs) was conducted based on desktop study and
field surveys to identify available landscape elements which would contribute
to landscape characters of the study area.
The possible landscape elements include local topography, natural
landscapes form and patterns of settlement of built features, land use,
streetscapes, and any cultural, historical and/or religious identity.
8.3.1.2
A tree survey was conducted within the Project site and its
immediately adjacent areas to identify the landscape resources and quality with
respect to the tree species characters, ecological/conservation value, health
and structural conditions of the existing trees of the site.
8.3.1.3
The LCAs formed by various broadly homogenous units of
similar landscape characters within the study area have been mapped and
annotated on a plan.
Assessment of Sensitivity of LRs/LCAs
8.3.1.4
The sensitivity of the LRs/LCAs is rated as “high”, “medium”
or “low” and are influenced by rarity or importance, quality and condition and
maturity of the landscape elements, statutory or regulatory
limitations/requirements relating to the LRs/LCAs and the ability of the
LRs/LCAs to accommodate change, together with the significance of the change in
local and regional context.
Identification of Sources and Magnitude of Potential
Landscape Impacts
8.3.1.5
Potential landscape impacts could arise from both
construction and operation of the Project.
8.3.1.6
The magnitude of change for assessing landscape impacts
depends on the:
·
Compatibility of the Project with the surrounding landscape;
·
Duration of impacts under construction and operational phases;
·
Scale of development; and
·
Reversibility of change.
8.3.1.7
The significance of landscape impacts is defined as follows:
·
Significant: the landscape resource or landscape will
experience a major change;
·
Moderate: the landscape resource or landscape will
experience a moderate change;
·
Slight: the landscape resource or landscape will experience
slight or barely perceptible change; and
·
Negligible: the landscape resource or landscape will
experience indiscernible change.
8.3.1.8
The degree of significance of landscape impacts has been derived
from the combination of the magnitude of change and the sensitivity/tolerance
of the LRs/LCAs to the change, as shown in Table
8.1.
Table 8.1 Matrix
of Significance of Landscape and Visual Impact
Magnitude of Change |
Large |
Moderate Impact |
Moderate/
Significant Impact |
Significant Impact |
Intermediate |
Slight/ Moderate
Impact |
Moderate Impact |
Moderate/ Significant
Impact |
|
Small |
Slight Impact |
Slight/ Moderate
Impact |
Moderate Impact |
|
Negligible |
Negligible
Impact |
Negligible
Impact |
Negligible Impact |
|
|
Low |
Medium |
High |
|
|
Sensitivity |
8.3.2
Visual Baseline Review
and Impact Assessment
Baseline Review of Visual Envelope and Identification of Visually
Sensitive Receivers
8.3.2.1
The assessment area for the visual impact assessment has
been defined as the Visual Envelope (VE) which includes all areas from which
the proposed scheme can be seen or the viewshed formed by natural/manmade
features such as existing ridgelines, built development or woodland. The visibility of the Project from key groups
of Visually Sensitive Receivers (VSRs) has been determined through site surveys
and desktop study of topographical plans and aerial photographs.
8.3.2.2
The Visually Sensitive Receivers (VSRs) have been identified
within the VE. Potential VSRs are
classified as follows:
·
“VSRs-H” who view the proposed Project from their homes are
considered most sensitive due to high potential of intrusion on their home
environment and their perception of their general quality of life;
·
“VSRs-O” who view the proposed Project from their
workplaces, institutional and educational buildings are considered relatively
less sensitive than the above as the visual amenity will be less important to
their perception of quality of life;
·
“VSRs-R” who view the proposed Project from recreational
landscapes have varying sensitivity to change depending on the types of
recreational activity; and
·
“VSRs-T” who view the proposed scheme from public roads and
railways during travelling on vehicles or on foot have varying sensitivity to
change depending on speed and frequency of travel and the type of vehicles
used.
Assessment of Sensitivity of VSRs
8.3.2.3
The sensitivity of the VSRs to change is rated as “high”,
“medium” or “low” as influenced by the value and quality of existing views,
availability and amenity of alternative views, type and estimated number of
receiver population, duration or frequency of view and degree of visibility.
8.3.2.4
Typical viewpoints (vantage points) have been identified and
photographs showing their current views were taken. Details of the existing and future views
have been described in the baseline study.
Identification of Sources
and Magnitude of Potential Visual Impacts
8.3.2.5
Potential visual impacts could arise from both construction
and operation of the Project. The
magnitude of changes for assessing visual impacts would depend on the:
·
Compatibility of the Project with the surrounding landscape;
·
Duration of impacts under construction and operational phases;
·
Scale of development;
·
Reversibility of change;
·
Viewing distance; and
·
Potential blockage of view.
8.3.2.6
The significance of visual impacts was concluded and
classified as follows:
·
Significant: the VSRs to experience major change in view;
·
Moderate: the VSRs to experience moderate change in view;
·
Slight: the VSRs to experience minor change in view;
·
Negligible: the VSRs to experience indiscernible change in
view.
8.3.2.7
The degree of significance of visual impacts has been derived
from the combination of the magnitude of change and the sensitivity/tolerance
of the VSRs to the change, as shown in Table
8.1 above.
8.3.3
Identification of
Potential Landscape and Visual Mitigation Measures
8.3.3.1
Wherever possible and necessary, mitigation measures have
been considered in order to avoid, reduce, remedy or offset the adverse impacts
resulting from the proposed Project.
Impact avoidance would be the priority. If impacts cannot be avoided,
alternative measures have been explored on methods of reduction and/or
compensation. Wherever possible, a design
that will enhance the landscape and visual quality has been adopted.
8.3.4
Residual Impacts
8.3.4.1
Impacts remaining after implementation of the recommended
mitigation measures (residual impacts) have been identified and thoroughly
assessed as follows:
·
The impact is beneficial if the Project would complement
the landscape and visual character of its setting, follow the relevant planning
objectives and improve overall landscape and visual quality;
·
The impact is acceptable if the assessment indicated
that there would be no significance effects on the landscape, no significant
visual effects caused by the appearance of the Project, or no interference with
key views;
·
The impact is acceptable with mitigation measures if
there would be some adverse effects, but these can be eliminated, reduced or
offset to a large extent by specific measures;
·
The impact is unacceptable if the adverse effects would
be considered too excessive and unable to mitigate practically;
·
The impact is undetermined if significant adverse
effects would be likely, but the extent to which they may occur or may be
mitigated cannot be determined from the study. Further detailed study would be required
for the specific effects in question.
8.3.5
Photomontages
8.3.5.1
The visual impacts are demonstrated using photomontages to
illustrate existing views and future views (Day 1 and Year 5 of the Project
operation) from key groups of VSRs to illustrate existing conditions and
operational stage conditions in relation to other existing and known planned
developments and prominent visual features. Two vantage points have been selected for
preparing the photomontages (refer to Figure
8.7): Vantage Point 1 (VP1): on Sheung On Street immediately facing the
Project Site; Vantage Point 2 (VP2) at various levels of Tsui Shou House, Tsui
Wan Estate. VP1 has been selected
at a location from which the Project is most visible to the travellers. VP2 has been selected to represent views
from the residents located closest to the Project site.
8.4 Review of Planning and Development Control Framework
8.4.1.1
The Project site is located near the promenade of Chai Wan
Public Cargo Working Area and bounded by Sheung On Street,
8.4.1.2
According to the OZP, the “G/IC(2)” zone is intended
primarily for the provision of Government, institution or community facilities
serving the needs of the local residents and/or a wider district, region or the
territory. It is, also, intended to
provide land for uses directly related to or in support of the work of the
Government, organizations providing social services to meet community needs,
and other institutional establishments.
The “O” zone is intended primarily for the provision of outdoor open-air
public space for active and/or passive recreational uses serving the needs of
local residents as well as the general public.
8.4.1.3
According to the information from District Lands Office/Hong
Kong East, the Project site was defined as Temporary Government Land Allocation
(TGLA) No. THK-1856 to EMSD for a vehicle and non-vehicle Workshop. As the permission for the use of this site
was granted on a temporary basis, the Project would only result in temporary
loss of minor portions of the “G/IC(2)” zone and “O” zone during its 5-year
operation period, and would have no significant impacts on the planned uses of
the site and its surrounding areas upon termination of the TGLA.
8.5 Landscape and Visual Baseline Study
8.5.1
Landscape Resources (LRs)
Existing LRs in the Study Area
8.5.1.1
This section describes the
baseline conditions of existing landscape resources in the area within 500m
from the Project site boundary. Figure 8.3 displays the extent of
various types of landscape resources within the study area.
LR1 Natural
8.5.1.2
This category includes the
natural woodland below
·
LR1-1 Below Cheung Man Road: the natural soil slope below
·
LR1-2 On the northeastern side of
LR2 Vegetated Engineered Slope
8.5.1.3
This category includes the
vegetated engineered slope above
·
LR2-1 Above Cheung Man Road: the slope is a cut-slope planted
with a few trees including the exotic tree species, Casuarina equisetifolia, Melaleuca
cajuputi subsp. cumingiana and
native tree species Macaranga tanarius,
with a grassy ground cover dominated by hydro-seeding grasses and weedy
vegetation. The slope vegetation
consists of mainly exotic plants and due to poor soil quality (e.g. drought and
shallow soil) it is not a suitable habitat for natural regeneration of native
plant communities. The slope is
considered a common human-modified landscape resource in the study area and is
considered to have low plant diversity comprising mainly planted exotic species,
though it can provide a certain greenery area in the urbanized environment. This type of LR can be easily re-created
through slope upgrading works and replanting. The slope is considered to be of medium
amenity value and medium sensitivity.
·
LR2-2
·
LR2-3 On the northeastern side of
LR3 Park / Recreation
8.5.1.4
LR3 covers public parks/
public rest gardens, playgrounds, sport grounds, and sitting-out areas within
the study area:
·
LR3-1
·
·
·
LR3-4 Tsui Wan Estate Playgrounds, tennis court and
sitting-out area: The recreational
grounds offer well-vegetated recreational areas and provide good greenery
environment to the residents of Tsui Wan Estate. Dominant plant species include Acacia
confusa and Ficus microcarpa. LR3-4 is considered of high amenity
value and high sensitivity.
·
LR3-5 Yue Wan Estate Playgrounds: LR3-5 refers to the
playgrounds with well-vegetated areas and sitting-out areas providing a high
amenity recreational ground to the residents of Yue Wan Estate and the
public. Dominant plant species
include Acacia confusa,
Melaleuca
quinquenervia, Delonix regia and Ficus microcarpa. This LR is
considered of high amenity value and high sensitivity.
·
LR3-6 Sheung On Street Playground and Football Fields: These sport grounds and playground offer
recreational areas and create openness to harmonize the densely built area in
the vicinity. Dominant plant
species include Bauhinia sp. and Delonix regia. This LR is considered of medium
amenity value and high sensitivity.
·
LR3-7 Sitting-out area at
LR4 Roadside Plantings
8.5.1.5
LR4 refers to all the
roadside planting areas within the study area. The roadside plantings are dominated by
mainly common exotic tree species/ ornamentals of young to semi-mature age, in
generally fair to good health conditions due to regular maintenance. Disturbances (e.g. site clearance) to
this LR4 are considered reversible as LR4 can be reinstated through
re-vegetation. LR4 includes the
following:
·
LR4-1 Along Cheung Man Road (dominant plant species including Spathodea campanulata);
·
LR4-2 Along Island Eastern Corridor (dominant plant species
including Peltophorum pterocarpum and Michelia x alba);
·
LR4-3 Along Shun Tai Road (dominant plant species including Dalbergia balansae and Chukrasia tabularia);
·
LR4-4 Along Wing Tai Road (dominant plant species including Ficus
microcarpa and Senna
surattensis);
·
LR4-5 Along Sheung On Street (dominant plant species
including Spathodea campanulata);
·
LR4-6 Along Chong Fu Road, Sheung Mau Street, Sheung Tat
Street and Shing Tai Road (dominant plant species including Spathodea campanulata and Bombax ceiba);
·
LR4-7 Along Chai Wan Road (dominant plant species including Bauhinia sp. and Garcinia subelliptica); and
·
LR4-8 Along Fung Yip Street,
8.5.1.6
These roadside planting
areas provide greenery to soften the urban environment especially the transport
routes within the study area. This
LR is considered of medium to high amenity value and medium sensitivity.
LR5 Residential Plantings
8.5.1.7
LR5 refers to the landscape
planting area within residential development of the study area. These landscape plantings are dominated
by mainly common exotic tree species/ ornamentals of young to semi-mature age,
and generally in fair to good health conditions due to regular maintenance. Disturbances (e.g. site clearance) to
this LR5 are considered reversible as LR5 can be reinstated through
re-vegetation. LR5 includes the
following:
·
LR5-1 At Tsui Wan Estate (dominant plant species including Aleurites moluccana and Ficus microcarpa);
·
LR5-2 At Yue Wan Estate (dominant plant species including Acacia
confusa and Melaleuca quinquenervia);
·
LR5-3 At Tsui Lok Estate (dominant plant species including Ficus microcarpa); and
·
LR5-4 On the Roof of Carpark of Hang Tsui Court (dominant
plant species including Ficus microcarpa and Delonix
regia).
8.5.1.8
These areas offer
well-vegetated area adjoining the recreational ground/ facilities of the
residential developments, and help soften the densely built-up environment
residential areas. These LRs are
considered of high amenity value and high sensitivity.
LR6 Open Space Vegetation
8.5.1.9
This LR refers to the
spontaneously/naturally established vegetation of disturbed habitat types
(dominant species including Ficus hispida,
Macaranga tanarius and the weedy
species, Leucaena leucocephala)
and/or a few planted ornamentals (e.g. planted ornamentals such as Ficus benjaminia, Ligustrum sinensis) within the unused open space/ vacant land. Almost all these plant specimens are
opportunistic, pioneer species and highly tolerant to environmental stresses
within the degraded urban landscape.
They are generally resilient to disturbances and can be regenerated
easily with limited resources (e.g. soil and moisture). This LR6 includes::
·
LR6-1 On Chai Wan Road;
·
LR6-2 Bounded by Shing Tai Road, Wing Tai Road, Sheung Ping
Street and Sheung On Street (including trees of the Project site); and
·
LR6-3 Bounded by Sheung On Street ,
8.5.1.10 Though much of the vegetation of LR6 belongs to weedy vegetation, it is
considered to offer some greenery to the densely-built areas, and is considered
of medium amenity value and medium sensitivity.
LR7 Open Space/ Vacant Land
8.5.1.11 LR7 refers to the unused open space/ vacant land in the study, including:
·
LR7-1 Bounded by Shing Tai Road, Wing Tai Road, Sheung Ping
Street and Sheung On Street (including the Project site); and
·
LR7-2 Bounded by Sheung On Street,
8.5.1.12 LR7 belongs to human created habitats which can be re-created
easily. LR7 is considered of low
amenity value although it offers spatial relief from the surrounding densely
built area. It is considered of medium
sensitivity compared to the vegetated area.
LR8
Cargo Handling Basin (Water Bodies)
8.5.1.13 LR8 refers to sea area bounded by
reclaimed land adjoining Sheung On Street and Ka Yip Street, including LR8-1
Bounded by Sheung On Street and Kai Yip Street. Although its coastline has been
straightened to form the cargo handing area, the basin area (the water body)
belongs to natural resources and cannot be re-created. It offers very high amenity value to the
viewers from road level to high level. LR8-1 is considered to be of high
sensitivity to due its visual prominence and high public amenity value.
Magnitude of Change to Existing LRs in the Study Area
8.5.1.14 Given the proposed development to be in line with the permitted land use
of the TGLA and the proposed works footprint to be confined to a small area at
Sheung On Street, it would not result in any significant change to all the off-site
existing landscape resources in the study area except for LR6-2 (open space
vegetation of the Project site) and LR7-1 (open space/ vacant land of the
Project site). Potential impacts
from the Project on LR6-2 (open space vegetation of the Project site) will be
limited to removal of 10 weedy tree specimens of Leucaena leucocephala (an undesirable weedy tree species) and a
dead tree, and felling of 10 trees which belong to very common and widespread
native tree species as detailed in Section
8.5.3. The magnitude of change
to LR6-2 is considered intermediate given the tree species to be removed are
opportunistic species and can be regenerated easily in degraded urban environment. Potential impacts from the Project on
LR7-1 (open space/ vacant land of the Project site) will result in converting
the existing open space/ vacant land (the Project site) into the proposed
vehicle maintenance workshop comprising only low-rise structures/
facilities. The proposed
development will result in loss of approximately 2,040 m2 of LR7-1 (open space/vacant land) within the 5-years of Project
operation. Given the short period
of Project operation and the Project site (within LR7-1) with proposed low-rise
structures/ facilities can still offer spatial relief as that provided by the
existing open space (LR7-1), the magnitude of change to LR7-1 is considered
small.
8.5.1.15 The baseline conditions of on-site landscape resources (i.e. LR6-2) in
relation to existing trees of the Project site are described in Section 8.5.3.
8.5.2
Landscape Character Areas
8.5.2.1
A total of seven landscape
character areas (LCAs) formed by various broadly homogenous units of similar
landscape characters were identified within the 500m study area, as shown in Figure 8.4. These areas include:
LCA1 –
8.5.2.2
LCA1
refers to the natural hillside woodland just behind Chai Wan Park and that
surrounding Pamela Youde Nethersole Eastern Hospital and its adjoining
vegetated engineered slope connected to the natural hillside woodland of Tai
Lam Country Park. Most of the natural
woodland within LCA1 is dominated by young native secondary woodland tree species, including Macaranga tanarius, Mallotus paniculatus, Litsea
glutionsa, Ficus hispida, Alangium chinense, Sapium discolor, Bridelia
tomentosa, Sterculia lanceolata,
and woody climbers such as Byttneria
aspera, understory herbs such as Alpinia
hainanensis, with canopy gaps invaded by exotic weeds such as Leucaena leucocepha, the exotic climber Ipomoea cairica and Mikiana micrantha; while the adjoining vegetated engineered slope
consists of both recently regenerated native woodland and plantation. LCA1 is considered to be least resilient
to changes/ disturbances among all the LCAs in the Study Area and it would take
up to 20 years for natural regeneration/ succession of woodland of similar age.LCA1
is a rare type of LCAs due to naturalness of the native woodland and its good
connection with the natural hillside woodland of adjacent protected areas (Tai
Lam Country Park), itis
considered to have high amenity value and high sensitivity.
LCA2 – Community/Residential Urban Landscape
8.5.2.3
LCA2
it refers to the built up and densely populated area in Chai Wan District
dominated by high-rise residential buildings and medium to high-rise buildings
of community services such as schools and hospitals, and traffic roads
with limited open space. LCA2 is
considered to be the largest LCA within the study area and is one of the most
common landscape characters in Hong Kong.
LCA2 consists of only human-created landscape features and can be easily
re-created. LCA2 is considered to be of low to medium
amenity value and of moderate sensitivity.
LCA3 – Park Landscape
8.5.2.4
LCA3
is
formed by Chai Wan Park and its adjoining rest garden and other sitting-out
areas providing an extensive recreational open space to the southwest of the
Project site. LCA3 is dominated by
planted ornamentals (as detailed in the descriptions of LR3 in Section 8.5.1.4) of generally medium to
high amenity value and in fairly good health/ physical conditions due to
regular maintenance. Although LCA3
comprises almost human created landscape features and can be re-created, it is
not a common LCA in other parts (other than the southwest portion) of the Study
Area. LCA3 is considered to be of
high sensitivity.
LCA4 – Industrial Urban Landscape
8.5.2.5
LCA4
refers to the built-up area dominated by industrial buildings along the coast
of Chai Wan Public Cargo Working Area. LCA4
is a common landscape character in Chai Wan area and in
LCA5 – Railway Viaduct Landscape
8.5.2.6
LCA5
refers to the MTR viaduct connecting Chai Wan MTR Station and Heng Fa Chuen MTR
Station. It is a very common human
created feature and it forms
the most prominent visual obstruction to the viewers within the study area. LCA4 is considered highly resilient to
change and isconsidered to
have minimal visual amenity value.
LCA5 is of low sensitivity.
LCA6 –
8.5.2.7
LCA6
refers to the cargo handling basin (water bodies) and its adjoining designated cargo handing area
bounded by Sheung On Street and Ka Yip Street. It is only partially visible to
travellers on Sheung On Street and Ka Yip Street due to the existing
screens/fencing. However, it
becomes more prominent to viewers at medium to high-level (e.g. those viewers
from adjacent industrial buildings).
The
water bodies of LCA6 are natural landscape
resources and cannot be re-created. LCA6 is considered to have high amenity value and high
sensitivity.
LCA7 – Open Car Parks/Maintenance Workshops
8.5.2.8
LCA7 refers to those uncovered car parks and
open space for use as maintenance workshops/ bus depots along Sheung On Street,
including the Project site. This LCA is common
in urban areas throughout
8.5.2.9
As the proposed land use (a
one-storey vehicle maintenance workshop comprising a steel cover of 5.2m high
and uncovered area for parking/ accommodation of facilities) of the Project
site in the TGLA would still be in line with the current landscape character
(i.e. LCA7 – Open Car Parks/ Maintenance Workshops) and would not result in any
change to the existing urban setting of the study area, no significant change
to existing landscape characters of the study area due to the proposed
development are anticipated, except for loss of some greenery due to felling of
the weedy vegetation/ trees within the Project site.
8.5.3
Existing Trees within the
Proposed Site
8.5.3.1
A tree survey was conducted
on 8 September 2011 by a Certified Arborist of International Society of
Arboriculture. A total of 31 tree
specimens were identified within or close to the project site boundary as
included in Appendix 8.1. Approximately 32% of the surveyed trees
belong to the invasive exotic species Leucaena
leucocephala which are scattered throughout the proposed Project site;
about 50% of the surveyed trees belong to the common native species Macaranga tanarius concentrated on/just
outside the southern boundary of the Project site. Of the total 31 trees, five trees (or
~16% of surveyed trees) were found to have poor tree form but generally in fair
health condition, 11 trees (or ~35% of surveyed trees) were found to be in poor
health and tree forms. A total of 14
of the remaining trees (or ~45% of the surveyed trees) were found in generally
fair health and tree form. One dead tree was recorded within the survey area. Table 8.2 summarises the tree species
composition within the tree survey area.
Table
8.2 Tree
Species Composition within Survey Area
Scientific Name |
Chinese Common Name |
Species Origin |
No. of Trees |
% of Trees |
Celtis sinensis |
朴樹 |
Native |
2 |
6.5% |
Leucaena leucocephala |
銀合歡 |
Exotic |
10 |
32.3% |
Ligustrum sinense |
山指甲 |
Native |
1 |
3.2% |
Macaranga tanarius |
血桐 |
Native |
16 |
51.6% |
Morus alba |
桑 |
Native |
1 |
3.2% |
Dead
tree |
死樹 |
-- |
1 |
3.2% |
|
|
Total |
31 |
100% |
8.5.3.2
No registered or potential
Old and Valuable Trees (OVT) were recorded during the tree survey and no rare
or protected species were encountered.
Detailed information of the surveyed trees is presented in the Tree
Assessment Schedule in Appendix 8.1.
8.5.3.3
Of the total 31 trees
surveyed, 29 trees would be of direct conflict with the proposed development,
including 21 trees (or their significant portions) located within the proposed
project footprint. Among these 21
trees, 10 trees belong to the invasive exotic tree species, Leucaena leucocephala (銀合歡) which is considered as an undesirable,
self-seeded weedy species for which tree compensation control requirements for
tree removal would not be applicable to the normal horticultural maintenance of
these weedy trees, in accordance with ETWB TC(W) No. 3/2006. These 10 specimens of L. leucocephala are proposed to be
removed during site clearance work.
In addition, one dead tree (T017) was identified within the site and the
proposed works footprint and is proposed to be removed during site clearance
work. Removal of these weedy,
undesirable or dead trees is considered as normal horticultural maintenance
work during site clearance and not require tree compensation in accordance with
ETWB TC(W) No. 3/ 2006.
8.5.3.4
Another 10 trees are
proposed for felling due to low post-transplanting survival rate that does not
justify transplanting. All the
trees to be felled belong to very common native tree species, including 6
specimens of M. tanarius, two
specimens of C. sinensis, one tree of
M. alba and one tree of L. sinense, which are all widespread in
Hong Kong. .
8.5.3.5
The proposed development
will result in the felling/ removal of 21 trees as described above. The remaining 10 trees outside the
project footprint will be retained on-site and no pruning would be required.
8.5.3.6
Table 8.3 summarises the number of
trees for each type of recommendation in the tree survey area. Figure
8.5 indicates the tree recommendations for all the surveyed trees.
Table
8.3 Summary
of Proposed Action for Surveyed Trees in Tree Survey Area
Tree Survey Area |
Proposed Action on Surveyed Trees |
||
Retain |
Remove (Weedy Trees, i.e. Leucaena
leucocephala and Dead Tree) |
Fell |
|
Sheung
On Street, Chai Wan |
10 |
11 |
10 |
8.5.4
Existing Visual Context
Visual Envelope
8.5.4.1
Due to the existing
developments, the Visual Envelope (VE) of the proposed Project would be largely
confined to the built area along Sheung On Street, Ka Yip Street, Ping Sheung
Street and Wing Tai Road, residents from medium to high-level of Tsui Wan
Estate (including Tsui Hong House, Tsui Shou House and Tsui Fuk House), and
selected occupants of Pamela Youde Nethersole Eastern Hospital. The extent of the VE is shown in Figure 8.6.
Key Visually Sensitive Receivers (VSRs)
8.5.4.2
Within the VE, the key VSRs
are grouped according to the settlement of developments, travellers and
occupational receivers of similar nature.
The selected VSRs are representative of views available to viewers at
each of the following locations:
·
VSR-T1: Travellers at Sheung On Street;
·
VSR-T2: Travellers at
·
VSR-T3: Travellers at
·
VSR-T4: Travellers at
·
VSR-H1: Residents of Tsui Shou House, Tsui Hong House, Tsui
Fuk House (Tsui Wan Estate);
·
VSR-H2:
·
VSR-O1: Chai Wan
·
VSR-O2: Chai Wan Public Cargo Working Area;
·
VSR-O3:
·
VSR-O4: Chivas Godown,
·
VSR-O5:
·
VSR-O6 (Potential VSR): Educational Institute at Junction of
·
VSR-T/O1: Travellers/Users of Car Park at Sheung On Street.
8.5.4.3
Figure 8.7 shows the locations of the
identified VSRs as described as follows:
VSR-T1: Travellers on Sheung On Street
8.5.4.4
These VSRs represent
transient passers that comprises frequent travellers including mainly workers
from the cargo handling area and the bus depots on Sheung On Street, and
travellers using the car parks and occasional travellers from elsewhere. The VSRs can experience glimpsed to full
views of the Project site when they are travelling along Sheung On Street,
however, they can also be easily distracted by existing buildings (e.g. bus
depots) and the coastal area (which offers a more open scenic view of much
higher amenity value). As there are
a variety of alternative views considered to be of much higher amenity value
than that of the Project site, the sensitivity of these VSRs to visual change
to the Project site is considered low to medium. Figure
8.8 shows the existing views and the photomontages showing the view of the
proposed scheme at Vantage Point 1 on Sheung On Street.
VSR-T2: Travellers on
8.5.4.5
These travellers can only
occasionally glimpse the proposed steel shelter structure (the cover of the
maintenance workshop) as their views are significantly blocked by the roadside
trees and the existing car park on
VSR-T3: Travellers on
8.5.4.6
These VSRs are all transient passers
including mainly residents and workers in the vicinity. Their views are often blocked by the
existing footbridge structure and/or the roadside trees and trees along the
central divider of the traffic road on
VSR-T4: Travellers on
8.5.4.7
These VSRs comprise mainly
transient passers including workers of the cargo handling area and the adjacent
industrial buildings, and occasional travellers from elsewhere. These VSRs can only have a distant glimpsed
view of the Project site (very likely just the steel shelter) when they travel
along the road, with views often blocked by the fencing of the cargo handling
area. These VSRs can also be easily
distracted by the sea view from the cargo handling basin which is considered of
high amenity value, the sensitivity of these VSRs is considered to be low.
VSR-H1: Residents of Tsui Shou House, Tsui Hong House, Tsui
Fuk House (Tsui Wan Estate)
8.5.4.8
These VSRs can have a
distant partial to full view of the Project site at medium to high level, while
their view of the Project site will be significantly blocked by the existing
roadside trees on Wing Tai Road at a lower level (at 6th floor or below). The most sensitive VSRs of this group
will be those residents at medium level who can have a relatively closer and
almost full aerial view of the site than those residents at high level. However, due to the limited size of the
Project site and its existing low amenity value, the viewers of VSR-H1 will be
often distracted by more distant view of the harbour area and other
streetscapes in the vicinity, which are considered to have much higher amenity
value compared to that of the Project site. The sensitivity of these VSRs is
considered to be low. Figure 8.8
displays the existing views and the photomontages showing the views of the
Project site from various levels of Tsui Shou House (Vantage Point 2).
VSR-H2:
8.5.4.9
These VSRs are residents
from a high level who can only have a distant glimpsed view of the Project site
and their views are often distracted by the harbour view and the existing
streetscape in the vicinity of much higher amenity value. The sensitivity of these VSRs is
considered to be low.
VSR-O1: Chai Wan
8.5.4.10 The occupational receivers
on the northwestern side of the building can view the Project site from medium
to high level, with partial to full view, while their views will be blocked by
existing settlement and roadside trees at low level. However, as these VSRs are mostly
workers who are expected to have fewer chances to view the Project site when
they are at work, they are considered to be of low sensitivity to visual change
to the Project site.
VSR-O2: Marine Department Chai Wan Public Cargo Working Area
8.5.4.11 These VSRs can have limited partial view of the Project site as their
views are often blocked by the existing fencing of their work area. Also, these VSRs will be easily
distracted by the sea view of much higher amenity value than that of the Project
site. Given these VSRs are mostly
workers who are expected to have fewer chances to view Project site when they
are at work, they are considered to be of low sensitivity to visual change to
the Project site.
VSR-O3:
8.5.4.12 Similar to VSR-O1, these
VSRs are occupational receivers on the northwestern side of the buildings and
can have a glimpse of the Project site from medium to high level, with views
from lower level often blocked by existing settlement and roadside trees. Similar to VSR-O1, VSR-O3 are also
considered to be of low sensitivity to visual change given their view will be
easily distracted by the harhour area and they should have fewer chances to
view the Project site when they are at work.
VSR-O4: Chivas Godown,
8.5.4.13 The occupational receivers on the southwestern sides of the buildings
can have a distant glimpse of the Project site from medium to high level, while
their views from low level will be blocked by the cargo handling area. However, due to the close proximity to
the harbour area, these VSRs can be easily distracted by the harbour view and
the cargo handling activities such that they will only infrequently view the
Project site. The sensitivity of
these VSRs is considered to be low.
VSR-O5: Pamela Youde Nethersole Eastern Hospital
8.5.4.14 These VSRs represents the
workers and patients of the hospital who only occasionally glimpse the Project
site at long distances. Their views
are often distracted by the existing streetscape in the vicinity and the wide
harbour view which are of much higher amenity value compared to that of the
Project site. The sensitivity of
these VSRs to visual change to the Project site is considered to be low.
VSR-O6 (Potential VSR): Educational Institute at Junction of
8.5.4.15 These VSRs represent the occupational receivers/ users of the proposed
educational institute at the Junction of Shing Tai Road and Wing Tai Raod,
immediately adjacent to the Project site.
The construction phase of the proposed education institute will be
tentatively from the third quarter in 2013 to the third quarter of 2016. The construction phase of the proposed
institute will overlap with some period (likely to be restricted to a few
months) of the construction phase of the proposed EMSD work shop, while the operational
phase of the institute will overlap with approximate 10 months of the operational
phase of the EMSD Hong Kong Workshop.
VSR-O6 will have a “glimpsed to partial view” to the Project site during
the operational phase. VSR-O6 is considered to be of low to medium sensitivity
to visual change given that it will not experience the change of the existing
Project site from vacant land to a maintenance workshop, and the views of the
occupants from the facility will be easily distracted by the harbour area and the
fact that the occupants would not be able to view the Project site when in the
classrooms.
VSR-T/O1: Travellers/ Users of Car Park at Sheung On Street
8.5.4.16 These VSRs comprise
occasional travellers and users of the uncovered car parks who are considered
to be transient passers-by in these areas (except for the security guards of
the car parks). These VSRs can
occasionally view the Project site however their views are often blocked by the
existing trees and fences separating the car parks and the Project site. Users of the car parks are considered to
be of low sensitivity to change as they are occupied by parking activities and
will only stay at the area for a very short time. The security guards of the car parks are
usually working at the security guard booths and are not able to view the
Project site within the sheltered booths.
They are considered to be of low sensitivity to change.
8.5.4.17 Table 8.4 summarizes the identified VSRs and their sensitivity to change.
Table 8.4 Identified
VSRs and Their Sensitivity to Change
Identity of VSRs |
Quality of Existing View (Good/ Fair/Poor) |
Availability and Amenity (High/ Medium/ Low) of
Alternative Views |
Degree of Visibility (Full/ Partial/ Glimpse) |
Estimated Population of Viewers (Large/ Intermediate/
Few/ Very Few) |
Frequency of View (Frequent/ Intermittent/ Occasional/
Rare) |
Sensitivity to Change (High/ Medium/ Low) |
VSR-T1: Travellers on Sheung On Street |
Fair |
Yes and High |
Glimpsed to Full |
Few |
Occasional |
Low to Medium |
VSR-T2: Travellers on |
Fair |
Yes and High |
Glimpsed |
Few |
Occasional |
Low |
VSR-T3: Travellers on |
Poor to Fair |
Limited and Low to Medium |
Glimpsed to Partial |
Few |
Occasional |
Low |
VSR-T4: Travellers on |
Fair to Good |
Yes and High |
Glimpsed (at long
distance) |
Intermediate |
Occasional |
Low |
VSR-H1: Residents of Tsui Shou House, Tsui Hong House, Tsui Fuk House
(Tsui Wan Estate) |
Fair to Good |
Yes and High |
Partial to Full |
Intermediate |
Intermittent |
Low |
VSR-H2: |
Fair to Good |
Yes and High |
Glimpsed (at long
distance) |
Few |
Rare |
Low |
VSR-O1: Chai Wan |
Fair to Good |
Yes and High |
Partial to Full |
Intermediate |
Occasional |
Low |
VSR-O2: Marine Department Chai Wan Public Cargo Working Area |
Good |
Yes and High |
Glimpsed to Partial |
Intermediate |
Occasional |
Low |
VSR-O3: |
Fair to Good |
Yes and High |
Glimpsed (at long
distance) |
Intermediate |
Occasional |
Low |
VSR-O4: Chivas Godown, |
Fair to Good |
Yes and High |
Glimpsed (at long
distance) |
Intermediate |
Occasional |
Low |
VSR-O5: Pamela Youde Nethersole Eastern Hospital |
Fair to Good |
Yes and High |
Glimpsed (at long
distance) |
Intermediate |
Rare |
Low |
Potential VSR-O6: Educational Institute at Junction of |
Fair to Good |
Yes and High |
Glimpsed to Partial |
Intermediate |
Occasional |
Low to Medium |
VSR-T/O1: Travellers/ Users of Car Park at Sheung On Street |
Poor to Fair |
Yes and High |
Glimpsed to Partial |
Few |
Rare |
Low |
8.6 Landscape and Visual Impact Assessment
8.6.1
Construction Phase
Impacts
Landscape Impacts
8.6.1.1
The proposed development would
result in the felling of 10 trees which belong to very common and widespread
species in
8.6.1.2
Off-site tree compensation would
be implemented at the EMSD Tuen Mun Vehicle Servicing Station,
Visual Impacts
8.6.1.3
Construction phase visual
impacts would result from site formation work, construction of new building
structures, temporary stock piling and use of construction equipment. The proposed construction works would tentatively
commence in August 2012 and last for approximately 14 months.
8.6.1.4
Given the limited footprint
of the proposed works, no significant impacts on the identified LRs and LCAs would
be anticipated. The proposed works would
not result in any significant impacts on the visual quality and amenity
available to the identified existing VSRs except for the users of car parks
(VSR-T/O1) adjacent to the Project site who have limited views and are located
at close proximity to the site.
However, these VSRs would only rarely view the Project site as they would
be concentrating on parking activities.
Given the Project site would be screened off by construction site
hoarding, no significant visual impacts on these VSRs are anticipated during
the construction phase of the Project.
8.6.1.5
The potential VSR-O6 users
of the education institute located immediately adjacent to the Project site do
not exist until the late operational phase of the Project. No construction phase impacts on VSR-O6
are anticipated.
8.6.2
Operational phase Impacts
Landscape Impacts
8.6.2.1
The main operational phase
landscape impacts would be limited to the introduction of a steel shelter of approximately
5.2m high within the Project site and some other maintenance facilities. As the proposed scheme is confined to a
small area at Sheung On Street and would be operated for approximately 5 years
only, the Project site can be resumed for its planned uses in the OZP after
termination of the TGLA and is not considered to result in any significant
operational impacts in the long term.
The Project is also not considered to have any operational impacts on
off-site landscape resources and landscape character areas in the vicinity
given its limited footprint and short duration of operation.
8.6.2.2
Table 8.5 below summarizes the
magnitude of change and the significance of impacts on LRs and LCAs.
Visual Impacts
8.6.2.3
The existing site (i.e.
LR7-1) is of low amenity value (currently a vacant land overgrown with mainly
weedy trees) and the proposed scheme would result in a neat and tidy-looking
site with a 5.2 high steel shelter with some low-rise maintenance
facilities. The proposed temporary
use of the site would be in line with other maintenance workshops in the
vicinity (e.g. those maintenance facilities of the adjacent bus depots). The
Project site would, also, be of similar landscape character (with much of the
site remained uncovered) compared to the adjacent open space/uncovered car
parks. The magnitude of visual change to the Project site during operation is
considered to be small.
8.6.2.4
Table 8.6 summarizes the magnitude
of change of views of and the significance of impacts on the identified VSRs.
LR/LCA ID No. |
Landscape Resources/
Landscape Character Areas |
Sensitivity (Low,
Medium, High) |
Magnitude of Change
(Negligible, Small, Intermediate, Large) |
Impact Significance
Threshold Without Mitigation (Negligible, Slight, Moderate and Significant) |
Mitigation Measures |
Significance of
Residual Impact after Mitigation during Construction/ on Day 1 of Operation/
in Year 5 of Operation |
LR1 |
Natural |
|
|
|
|
|
LR1-1 |
Below |
High |
Negligible |
Negligible |
Nil |
Not Applicable |
LR1-2 |
On the Northeastern Side of Pamela Youde
Nethersole Eastern Hospital |
High |
Negligible |
Negligible |
Nil |
Not Applicable |
LR2 |
Vegetated
Engineered Slope |
|
|
|
|
|
LR2-1 |
Above |
Medium |
Negligible |
Negligible |
Nil |
Not Applicable |
LR2-2 |
Adjoining |
Medium |
Negligible |
Negligible |
Nil |
Not Applicable |
LR2-3 |
On the Northeastern Side of Pamela Youde
Nethersole Eastern Hospital |
High |
Negligible |
Negligible |
Nil |
Not Applicable |
LR3 |
Park/
Recreation |
|
|
|
|
|
LR3-1 |
Chai Wan Park |
High |
Negligible |
Negligible |
Nil |
Not Applicable |
LR3-2 |
|
High |
Negligible |
Negligible |
Nil |
Not Applicable |
LR3-3 |
Wing |
High |
Negligible |
Negligible |
Nil |
Not Applicable |
LR3-4 |
Tsui Wan Estate Playgrounds, |
High |
Negligible |
Negligible |
Nil |
Not Applicable |
LR3-5 |
Yue Man Estate Playgrounds |
High |
Negligible |
Negligible |
Nil |
Not Applicable |
LR3-6 |
Sheung On Street Playground and Football
Fields |
High |
Negligible |
Negligible |
Nil |
Not Applicable |
LR3-7 |
Sitting-out Area at |
High |
Negligible |
Negligible |
Nil |
Not Applicable |
LR4 |
Roadside
Plantings |
|
|
|
|
|
LR4-1 |
Along |
Medium |
Negligible |
Negligible |
Nil |
Not Applicable |
LR4-2 |
Along |
Medium |
Negligible |
Negligible |
Nil |
Not Applicable |
LR4-3 |
Along Shun |
Medium |
Negligible |
Negligible |
Nil |
Not Applicable |
LR4-4 |
Along |
Medium |
Negligible |
Negligible |
Nil |
Not Applicable |
LR4-5 |
Along Sheung On Street |
Medium |
Negligible |
Negligible |
Nil |
Not Applicable |
LR4-6 |
Along |
Medium |
Negligible |
Negligible |
Nil |
Not Applicable |
LR4-7 |
Along Chai Wan Road |
Medium |
Negligible |
Negligible |
Nil |
Not Applicable |
LR4-8 |
Along |
Medium |
Negligible |
Negligible |
Nil |
Not Applicable |
LR5 |
Residential
Plantings |
|
|
|
|
|
LR5-1 |
At Tsui Wan Estate |
High |
Negligible |
Negligible |
Nil |
Not Applicable |
LR5-2 |
At Yue Wan Estate |
High |
Negligible |
Negligible |
Nil |
Not Applicable |
LR5-3 |
At Tsui Lok Estate |
High |
Negligible |
Negligible |
Nil |
Not Applicable |
LR5-4 |
On the Roof of Carpark of |
High |
Negligible |
Negligible |
Nil |
Not Applicable |
LR6 |
Open Space
Vegetation |
|
|
|
|
|
LR6-1 |
On Chai Wan Road |
Medium |
Negligible |
Negligible |
Nil |
Not Applicable |
LR6-2 |
Bounded by |
Medium |
Intermediate |
Moderate |
On site landscape mitigation measures (Section
8.7 refers) and off-site tree compensation |
Slight/ Slight/ Slight |
LR6-3 |
Bounded by Sheung On Street, |
Medium |
Negligible |
Negligible |
Nil |
Not Applicable |
LR7 |
Open Space/
Vacant Land |
|
|
|
|
|
LR7-1 |
Bounded by |
Medium |
Small |
Slight |
The project design has sought to incorporate
only low-rise temporary structures to alleviate the possible impacts on
visual openness offered by the LR |
Slight/ Negligible/ Negligible |
LR7-2 |
Bounded by Sheung On Street, |
Medium |
Negligible |
Negligible |
Nil |
Not Applicable |
LR8 |
|
|
|
|
||
LR8-1 |
Bounded by Sheung On Street and |
High |
Negligible |
Negligible |
Nil |
Not Applicable |
LCA1 |
|
High |
Negligible |
Negligible |
Nil |
Not Applicable |
LCA2 |
Community/Residential Urban Landscape |
Medium |
Negligible |
Negligible |
Nil |
Not Applicable |
LCA3 |
Park Landscape |
High |
Negligible |
Negligible |
Nil |
Not Applicable |
LCA4 |
Industrial Urban Landscape |
Low |
Negligible |
Negligible |
Nil |
Not Applicable |
LCA5 |
Railway Viaduct Landscape |
Low |
Negligible |
Negligible |
Nil |
Not Applicable |
LCA6 |
|
High |
Negligible |
Negligible |
Nil |
Not Applicable |
LCA7 |
Open Car Parks/Maintenance Workshops |
Medium |
Negligible |
Negligible |
Nil |
Not Applicable |
Table 8.6 Magnitude
of Change for Identified VSRs and Significance of Visual Impacts during Construction and Operational
Phases
VSRs |
Compatibility of the Project with Surrounding Landscape
(High/ Medium/ Low/ Nil) |
Duration of Impacts (Long/ Medium/ Short/ Nil) |
Scale of Development in Relation to Surrounding Baseline
Conditions (Large/ Medium/
Small/ Negligible) |
Reversibility of Change |
Shortest Viewing Distance (m) |
Potential Blockage of View (Large/ Intermediate/ Small/
Negligible) |
Magnitude of Change (Large/ Intermediate/ Small/
Negligible |
Sensitivity of VSRs |
Significance of Visual Impacts (without mitigation)
during Project Operation (1) |
Mitigation Measures (Construction/ Operation) |
Significance of Residual Impact after Mitigation during
Construction/ on Day 1 of Operation/ in Year 5 of Operation |
VSR-T1: Travellers on Sheung On Street |
High |
Short (Construction/ Operation) |
Negligible |
Yes |
Immediate |
Negligible |
Small |
Low to Medium |
Slight to Moderate
Impact |
Erection of site
hoarding/ Use of low-rise structures with green finishes (Section 8.7) |
Slight/ Slight/ Slight |
VSR-T2: Travellers on |
High |
Short (Construction/ Operation) |
Negligible |
Yes |
128 |
Negligible |
Negligible |
Low |
Negligible Impact |
Erection of site
hoarding/ Use of low-rise structures with green finishes (Section 8.7) |
Negligible/ Negligible/
Negligible |
VSR-T3: Travellers on |
High |
Short (Construction/ Operation) |
Negligible |
Yes |
4 |
Negligible |
Small |
Low |
Slight Impact |
Erection of site
hoarding/ Use of low-rise structures with green finishes (Section 8.7) |
Negligible/ Negligible/
Negligible |
VSR-T4: Travellers on |
High |
Short (Construction/ Operation) |
Negligible |
Yes |
299 |
Negligible |
Negligible |
Low |
Negligible Impact |
Erection of site
hoarding/ Use of low-rise structures with green finishes (Section 8.7) |
Negligible/ Negligible/
Negligible |
VSR-H1: Residents of Tsui Shou House, Tsui Hong House, Tsui Fuk House
(Tsui Wan Estate) |
High |
Short (Construction/ Operation) |
Negligible |
Yes |
54 |
Negligible |
Small |
Low |
Slight Impact |
Erection of site
hoarding/ Use of low-rise structures with green finishes (Section 8.7) |
Slight/ Negligible/
Negligible |
VSR-H2: |
High |
Short (Construction/ Operation) |
Negligible |
Yes |
358 |
Negligible |
Negligible |
Low |
Negligible Impact |
Erection of site
hoarding/ Use of low-rise structures with green finishes (Section 8.7) |
Negligible/ Negligible/
Negligible |
VSR-O1: Chai Wan |
High |
Short (Construction/ Operation) |
Negligible |
Yes |
147 |
Negligible |
Negligible |
Low |
Negligible Impact |
Erection of site
hoarding/ Use of low-rise structures with green finishes (Section 8.7) |
Negligible/ Negligible/
Negligible |
VSR-O2: Marine Department Chai Wan Public Cargo Working Area |
High |
Short (Construction/ Operation) |
Negligible |
Yes |
15 |
Negligible |
Negligible |
Low |
Negligible Impact |
Erection of site
hoarding/ Use of low-rise structures with green finishes (Section 8.7) |
Negligible/ Negligible/
Negligible |
VSR-O3: |
High |
Short (Construction/ Operation) |
Negligible |
Yes |
313 |
Negligible |
Negligible |
Low |
Negligible Impact |
Erection of site
hoarding/ Use of low-rise structures with green finishes (Section 8.7) |
Negligible/ Negligible/
Negligible |
VSR-O4: Chivas Godown, |
High |
Short (Construction/ Operation) |
Negligible |
Yes |
443 |
Negligible |
Negligible |
Low |
Negligible Impact |
Erection of site
hoarding/ Use of low-rise structures with green finishes (Section 8.7) |
Negligible/ Negligible/
Negligible |
VSR-O5: Pamela Youde Nethersole Eastern Hospital |
High |
Short
(Construction/ Operation) |
Negligible |
Yes |
252 |
Negligible |
Negligible |
Low |
Negligible
Impact |
Erection
of site hoarding/ Use of low-rise structures with green finishes (Section
8.7) |
Negligible/
Negligible/ Negligible |
VSR-T/O1: Travellers/ Users of Car Park at Sheung On Street |
High |
Short (Construction/ Operation) |
Negligible |
Yes |
Immediate |
Negligible |
Small |
Low |
Slight Impact |
Erection of site
hoarding/ Use of low-rise structures with green finishes (Section 8.7) |
Negligible/ Negligible/
Negligible |
Potential VSR-O6: Educational Institute at Junction of |
High |
Short (Construction/ Operation) |
Negligible |
Yes |
Immediate |
Intermediate |
Not Applicable |
Low to Medium |
Moderate |
Use of rolling curtains
to screen off the western boundary of the Project site (maintenance workshop) |
N.A./ Slight/ Slight |
Note
(1): All impacts are adverse unless noted as being beneficial
8.7 Landscape and Visual Mitigation Measures
8.7.1.1
Due to limited size of the
site and the proposed land use for the EMSD Hong Kong Workshop, no space would
be allowed for on-site tree compensation for proposed felling of the 10 native
trees. However, after felling of 10
trees and removal of some dead/ weedy trees, the site and the proposed
development would still be well screened on the southern boundary by the
retained trees and the existing footbridge. The resulting landscape and/or visual
impacts from proposed tree felling without mitigation measures (e.g. on-site
tree compensation) are still considered low.
8.7.1.2
As this Workshop is only
for temporary, short-term use, shed structure without facade, vertical greening
and roof top planning would not be practicable, especially when additional
loading may be incurred on the design of roof structure. The proposed finishes for the low-rise
structures (including the steel cover and the facilities) of the Project will
be in dull and light green color (as shown in the Figure 8.8) to resemble the original greenery provided by the
sparse vegetation of the existing Project site. Off-site tree compensation as described
in Section 8.6.1 would be implemented to compensate the tree loss due to the
proposed Project.
8.7.1.3
The Project site would be
screened off by construction site hoarding to minimize landscape/visual impacts
to the VSRs at road-side level during the construction phase.
8.7.1.4
Rolling curtains made of
durable and non-reflective materials will be installed along the western site boundary
of the proposed Workshop to effectively screen off the operational activities
of the workshop such that the maintenance activities will not be visible to the
users of the proposed educational institute (i.e. VSR-O6) during the possible
10-month concurrent operation period of both sites. The rolling curtain serves a dual
purpose to also mitigate any potential reflected noise arising from the
operational activities of the Workshop to the proposed educational institute as
addressed in Section 4 of this EIA Report.
8.7.1.5
Given that the proposed
scheme is granted on a temporary basis only (approximately a five-year
operation period), the Project is not considered to result in any significant
long term cumulative landscape and visual impacts.
8.8.1.1
With the implementation of mitigation measures as
described in Section 8.7, the residual impacts on LR6-2 open space vegetation
(i.e. vegetation loss in the Project site) is considered to be “slight” during the
construction phase, on Day 1 of Project operation and in Year 5 of the Project
operation. Residual impacts on
LR7-1 open space/ vacant land (including the Project site) are considered
“slight” during construction phase (due to the temporary nature and short
duration of the construction phase), and “negligible” on Day 1 and in year 5 of
Project operation (given the proposed development consists of only low-rise
temporary structures that will have minimal impacts on visual openness to the
environment).
8.8.1.2
The Project is considered to result in slight to moderate
adverse impact to travellers on Sheung On Street, and slight to negligible
impacts to the remaining VSRs. With
the implementation of recommended mitigation measure (erection of site hoarding
to completely screen off the Project site during construction phase), the
residual impacts are considered acceptable to most of the identified VSRs
during construction phase except for the VSRs with views from a high-rise level,
including for example VSR-H1 from Tsui Wan Estate, who may experience slight
impacts due to the project construction.
8.8.1.3
Given the Project site can be resumed for its
originally planned use in the OZP after termination of the TGLA, no long-term
residual impact is anticipated.
8.9 Environmental Monitoring and Audit
8.9.1.1
With the implementation of the recommended measures provided
in Section 8.7, no adverse construction phase impact would be expected at the
VSRs in the vicinity of the construction sites. As such, LVIA monitoring is not
recommended. However, weekly site
audits are recommended to
ensure the recommended measures are properly implemented throughout the
construction period. Landscape and
visual monitoring during the operational phase of this Project is not considered
necessary.
8.10.1.1
A landscape and visual impact assessment has been conducted
which covers a 500m study area for assessment of landscape impacts, and the
visual envelope (within which the proposed scheme can be seen) for assessment
of visual impacts. Given the
temporary nature and scale of the project, the proposed development will not
have any impacts on existing off-site landscape resources and landscape
character areas, while on-site landscape impacts will be limited to felling of
ten common tree species and removal of some weedy/ dead trees and temporary
loss of approximately 2,080 m2 of LR7-1 (open space/ vacant land). Due to limited size of the site and the
proposed land use (a workshop), no space could be allowed for on-site tree
compensation for proposed felling of the ten native trees. However, after felling of 10 trees and
removal of some dead/ weedy trees, the site and the proposed development can
still be well screened on the southern boundary by the retained trees and the
existing footbridge. The resulting
landscape and/or visual impacts from proposed tree felling without mitigation
measures (e.g. on-site tree compensation) are still considered low.
8.10.1.2
Off-site tree compensation will be implemented at E.M.S.D.
Tuen Mun Vehicle Servicing Station,
8.10.1.3
Due to the limited footprint of the Project site and the
existing development setting, the Project site can only be occasionally/ rarely
viewed by most of the identified visually sensitive receivers in the study
area. Except for the travellers on
Sheung On Street (VSR-T1) who are considered to have low to medium sensitivity
to visual change to the Project site, other identified VSRs are considered to
have low sensitivity to visual change to the Project site.
8.10.1.4
The proposed scheme is considered to have slight to moderate
impacts on the travellers on Sheung On Street, and low to slight impact to the
potential VSR-O6 The Proposed Education Institute at Junction of Shing Tai Road
and