9.1 Legislation, Standards and
Guidelines and Other References
9.2 Review of Planning and Development Control
Framework
9.6 Landscape Resources, Landscape
Character Areas and Visually Sensitive Receivers
9.7 Identification of Potential
Impacts
9.8 Landscape
and Visual Impact before Mitigation
9.9 Landscape and Visual
Mitigation Measures
9.10 Residual Landscape and Visual
Impacts after Mitigation
9.11 Broad Tree Survey Results and
Preservation Strategy
9.12 Environmental Monitoring and Audit
Figures
Figure
9.1a Review
of Planning and Development Control Framework – Sheet 1 of 2
Figure
9.1b Review
of Planning and Development Control Framework – Sheet 2 of 2
Figure
9.2 Landscape
Resources
Figure
9.3a Photographs of Landscape
Resources – Sheet 1 of 3
Figure
9.3b Photographs of Landscape
Resources – Sheet 2 of 3
Figure
9.3c Photographs of Landscape
Resources – Sheet 3 of 3
Figure
9.4 Landscape
Character Areas
Figure
9.5 Photographs of Landscape
Character Areas
Figure 9.6 Visual Envelope and Visually
Sensitive Receivers
Figure 9.7a Visual
Contexts of Visually Sensitive Receivers – Sheet 1 of 4
Figure 9.7b Visual
Contexts of Visually Sensitive Receivers – Sheet 2 of 4
Figure 9.7c Visual
Contexts of Visually Sensitive Receivers – Sheet 3 of 4
Figure 9.7d Visual
Contexts of Visually Sensitive Receivers – Sheet 4 of 4
Figure 9.8 Recommended
Landscape and Visual Mitigation Plan
Figure 9.9ai Photomontages
– Viewpoint A at VSR 1 – Sheet 1 of 2
Figure 9.9aii Photomontages – Viewpoint A at VSR 1 –
Sheet 2 of 2
Figure 9.9bi Photomontages
– Viewpoint B at VSR 2 – Sheet 1 of 2
Figure 9.9bii Photomontages – Viewpoint B at VSR 2 –
Sheet 2 of 2
Figure 9.9ci Photomontages
– Viewpoint C at VSR 3 – Sheet 1 of 2
Figure 9.9cii Photomontages – Viewpoint C at VSR 3 –
Sheet 2 of 2
Figure 9.9di Photomontages
– Viewpoint D at VSR 4 – Sheet 1 of 2
Figure 9.9dii Photomontages – Viewpoint D at VSR 4 –
Sheet 2 of 2
Appendices
Appendix 9.1 Broad Brush Tree Survey
9.1 Legislation, Standards and Guidelines and Other References
9.1.1 General
9.1.1.1
The
legislation, standards, guidelines and criteria relevant to the Study for
assessment of landscape and visual impacts include:
Legislation and Planning Standards
· Environmental Impact Assessment Ordinance (Cap. 499), including Technical Memorandum on Environmental Impact Assessment Process (TM-EIAO), Annexes 3, 10, 11, 18 and 20;
· Town Planning Ordinance (Cap. 131);
· Country Parks Ordinance (Cap. 208);
· Marine Parks Ordinance (Cap. 476);
· Protection of Endangered Species of Animals and Plants Ordinance (Cap. 586);
· Forests and Countryside Ordinance (Cap. 96); and
· Hong Kong Planning Standards and Guidelines, in particular Chapters 4, 10, 11 and 12.
Technical
Circulars/ Guidelines
· Environmental Impact Assessment Ordinance Guidance Note No. 8/2010;
· Development Bureau (DEVB) Works Technical Circulars (TCW) No. 3/2012 - Site Coverage of Greenery for Government Building Projects;
· DEVB TCW No. 6/2015 - Maintenance of Vegetation and Hard Landscape Features;
· DEVB TCW No. 4/2020 - Tree Preservation;
· DEVB TCW No. 5/2020 - Registration and Preservation of Old and Valuable Trees;
· DEVB (GLTM) No. 2/2012 - Allocation of Space for Quality Greening on Roads;
· Environment, Transport and Works Bureau (ETWB) TCW No. 05/2005 - Protection of streams/rivers from adverse impacts arising from construction works;
· ETWB TCW No. 36/2004 - Advisory Committee on the Appearance of Bridges and Associated Structures; and
· ETWB TCW No. 19/2005 - Environmental Management on Construction Sites.
Other Reference Information and Planning Studies
· The Register of Old and Valuable Trees - Hong Kong, maintained by the Leisure and Cultural Services Department;
· Technical Report of “Study on Landscape Value Mapping of Hong Kong” by Planning Department; and
· Landscape Character Map of Hong Kong (2005 Edition).
9.2
Review of Planning and Development Control
Framework
9.2.1.1
A
review of the existing planning studies and documents was undertaken as a part
of the baseline study to gain an insight into the planned role of the Project site,
its surrounding areas, and its landscape context and to help determine if the Project
fits into the wider existing and future landscape context. The Project site is located at the coastal area of
Northeast New Territories within Yan Chau Tong Marine Park and Plover Cove
Country Park, which are under the custody of Country Parks Ordinance (Cap. 208)
and Marine Parks Ordinance (Cap. 476). In addition, the Project is also
located within the Hong Kong UNESCO Global Geopark as shown in Figure 9.1a.
9.2.1.2
Besides,
compatibility of the Project to the
landscape can be related to land uses and development control framework in the Outline Zoning Plan (OZP). Though the Project site is currently not
covered by any OZP, part of the 500m assessment area of landscape impact
assessment for the Project is covered by the Approved Lai Chi Wo, Siu Tan and Sam A Tsuen OZP
No. S/NE-LCW/2. The areas
to the south of the Project in proximity to Lai Chi Wo village are currently
zoned as “Green Belt” (“GB”), “Conservation Area” (“CA”), “Agriculture” (“AGR”)
, “Government, Institution or Community” (“G/IC”) and “Village Type Development” (“V”). Corresponding planning and development
control framework is illustrated in Figure 9.1b.
9.2.1.3
By virtue of the tight connection of the Lai Chi Wo village and the
adjoining Plover Cove Country Park and Yan Chau Tong Marine Park, the general
planning intention of the Approved
Lai Chi Wo, Siu Tan and Sam A Tsuen OZP No. S/NE-LCW/2 is to protect its high conservation and landscape
value which complements the overall naturalness and the landscape beauty within
and surrounding the Plover Cove Country Park and Yan Chau Tong Marine Park.
With respect to the existing development in Lai Chi Wo village, existing
circumstance of consolidated, low-rise village type development shall be
maintained as far as practicable to avoid undesirable disturbances to the
natural environment.
9.2.1.4
In the absence of vehicular access to Lai Chi Wo, implementation of the
Project is essential for the provision of necessary cum safe access to
residents, tourists and other personnel commuting back and forth Lai Chi Wo and
other city districts, nevertheless avoids substantial infrastructural works in
the area of conservation importance, and maintains the area remote, tranquil,
harmonious and pleasant with rural landscape character area of rich landscape
resources. The Project does not intent to intensify the population or visitors
loading to Lai Chi Wo, but provides a safe, barrier-free access for the pier
uses with beautification of the existing pier in poor condition. It is
therefore considered that the Project demonstrates the compatibility of
existing planning and development control framework.
9.3.1 Landscape Impact Assessment
9.3.1.1 Pursuant to Clause 3.4.10.2 of EIA Study Brief (ESB-305/2017), the assessment area for the landscape impact assessment shall include landscape character areas and landscape resources within 500m from the boundary of the Project as identified in this EIA. Figure 9.2 shows the assessment area for landscape impact assessment.
9.3.2 Visual Impact Assessment
9.3.2.1
Pursuant to Clause 3.4.10.2 of EIA Study
Brief (ESB-305/2017), the assessment area for the visual impact assessment
shall be defined by the visual envelope (VE) of the Project. VE is an area
within which the proposed Project and associated works are visible and is
generally the view shed formed by natural/manmade features, such as ridgelines,
built form or areas of woodland/large trees. Figure 9.6 shows the assessment area
for visual impact assessment.
9.4.1 Landscape Baseline Conditions
9.4.1.1 The assessment area is located at the northeast coast of Lai Chi Wo, extending to partially cover Yan Chau Tong Marine Park and Plover Cove Country Park. The north, east and south sides of the Project are embraced by inshore water landscape of Yan Chau Tong Marine Park, part of which at Lai Chi Wo Beach was designated as a Site of Special Scientific Interest (SSSI) due to the presence of the seagrass bed (Oval Halophila (Halophila ovalis) and Marine Eel Grass (Zostera japonica)) of conservation importance. The Yan Chau Tong Marine Park, designated in 1996, is well-known for its flourishing fishery resources as a breeding ground for larvae and juvenile of fishes and many different marine lives. Further, in the presence of ecological resources such as White-flowered Derris (Derris alborubra) and Coastal Heritiera (Heritiera littoralis) of conservation importance, the mudflat and mangrove along the coast of Yan Chau Tong Marine Park demonstrates a substantial ecological and landscape significance for conservation.
9.4.1.2 Area to the west of the Project is dominated by coastal upland and hillside landscape in Plover Cove Country Park, which is designated in 1978. To the south west of Crooked Harbour is the inland valley area of Lai Chi Wo. Crooked Harbour and Lai Chi Wo are embraced by hilly terrain on three sides: Ngau Shi Wu Shan (+141mPD), Tiu Tang Lung (+416mPD) and Fan Kei Tok (+369mPD) to the south; Pan Pui Teng (+235mPD) to the west; and Kau Lo Tau (+104mPD) to the north. The natural and landscape setting is both serene and quiet. A wide spectrum of natural habitats including, inter alia, coastal mangrove, mudflat, intertidal water ponds, freshwater stream (connecting to the upstream Lai Chi Wo Ecologically Important Stream (EIS)), undisturbed native woodlands, shrublands etc. can be identified within Plover Cove Country Park. These habitats support variety of flora and fauna in the area, in particular some rare fauna such as Rice Fish (Oryzias curvinotus) and Mangrove Skimmer (Orthetrum poecilops), as well as flora species such as Sampson Macaranga (Macaranga sampsonii), Langkok Fig (Ficus langkokensis), Golden-leaved Tree (Chrysophyllum lanceolatum) and Incense Tree (Aquilaria sinensis) recorded in the literature.
9.4.1.3 To the southwest of the Project is dominated by the settled valley landscape of Lai Chi Wo village with active and fallow agricultural lands. Lai Chi Wo village is an old, yet consolidated Hakka village with a history of about 400 years. It is a popular destination for tourists and hikers. The village is rich in cultural heritage resources including the Grade 3 historic building namely Hip Tin Temple and Hok Shan Monastery, as well as the Lai Chi Wo Site of Archaeological Interest (SAI). In addition, to the north of the village is a mature fung shui woodland, about 1 ha of which was designated as a “Special Area” under the Country Parks Ordinance in 2005. The fung shui woodland is in tight connection of the surrounding natural woodlands, enhancing the biodiversity and ecological value of the area.
9.4.1.4 The existing Lai Chi Wo Pier is a straight solid concrete finger pier of about 64m long and 2.5m wide. The top level of the pier is about 3mPD. In addition, a navigation light has been installed at the head of the pier with two bollards on each side of the pier. Two sets of 1m high galvanised steel tubular railing are along the southwestern edge of the pier. The pier was first in operation in 1956. As the pier has reached its design life-time of 50 years, both the structural integrity and visual appearance of the existing pier are unsatisfactory.
9.4.1.5 According to the latest EIA Study Brief (ESB-305/2017) the baseline review comprises the identification of all existing LRs and LCAs within 500m from the boundary of the Project. Since the overall assessment area is a combination of terrestrial and marine areas, the Landscape Resources (LRs) / Landscape Character Areas (LCAs) can be classified into different categories as follows, and detailed description of each LR and LCA are provided in Table 9.1 and Table 9.2 respectively. The locations of LRs and LCAs are presented in Figure 9.2 and Figure 9.4. Photos for each LR are presented in Figure 9.3a to Figure 9.3c, while photos for each LCA are presented in Figure 9.5.
Table 9.1 Landscape
Resources within Assessment Area
Landscape Resource |
Description |
LR1 –
Inshore Water of Crooked Harbour near Lai Chi Wo (40.14 ha) |
This LR refers to the open sea water within
Crooked Harbour, which belongs to a part of Yan Chau Tong Marine Park. Hard
corals are present in this LR. Sea water is visibly clean in this
LR and marine traffic is limited. |
LR2 –
Tidal Mudflat at Lai Chi Wo Beach SSSI (2.63 ha) |
This LR refers to a stretch of shoreline
containing mudflats and mangrove forests within the SSSI. Species of
conservation importance including Coastal Heritiera (Heritiera littoralis), Marine Eel Grass (Zostera japonica) and Oval Halophila (Halophila ovalis) with high degree of naturalness can be found. |
LR3 –
Rocky Shore along the Coastline of Crooked Harbour (9.34 ha) |
This LR refers to natural rocky shore to the south
and north of the existing Lai Chi Wo Pier. This LR is an intertidal area
that mainly consists of solid rocks and sand. No flora species of
conservation importance were found or recorded. |
LR4 –
Woodland in Plover Cove Country Park (30.76 ha) |
This LR refers to upslope woodland to the west of
the existing Lai Chi Wo Pier. It is a relatively undisturbed native woodland
with mature trees. One flora species, Incense Tree (Aquilaria sinensis), of conservation importance was identified in
the ecological survey. |
LR5 –
Shrubland/ Grassland in Plover Cove Country Park (16.86 ha) |
This LR refers to the upslope shrubland/grassland
to the west of the existing Lai Chi Wo Pier, which is within Plover Cove
Country Park. The shrubland and grassland in the Country Park are undergoing
natural succession but fragmented as patches within the assessment area. There
is no flora species of conservation importance was identified. |
LR6 –
Agricultural Land in Lai Chi Wo (2.58 ha) |
This LR refers to the agricultural lands
developed on the flatland to the south of the assessment area. The
agricultural land is mostly man-made with retention of a few trees. No flora
species of conservation importance was identified in the ecological survey. |
LR7 –
Watercourse (0.32 ha) |
This LR refers to the natural watercourse
running along Lai Chi Wo Village to the open sea of Crooked Harbour. No flora
species of conservation importance was identified in the ecological survey. |
LR8 – Lai
Chi Wo Pier (0.02 ha) |
This LR refers to the existing Lai Chi Wo Pier
serving as a key transportation mode for residents and visitors in Lai Chi
Wo. The existing pier is a jetty with 64m long and 2.5m wide. |
LR9 – Lai
Chi Wo Village Type Development (1.95 ha) |
This LR refers to the 1-3 storeys village houses
in Lai Chi Wo village. The Lai Chi Wo village is an old Hakka village with
about 400 years of history. The village is rich in cultural heritage
resources including the Grade 3 historic building namely Hip Tin Temple and
Hok Shan Monastery, as well as the Lai Chi Wo SAI. OVTs are also found within
this LR. |
LR10 –
Intertidal Water Ponds at Siu Tan (2.31 ha) |
This LR refers to the intertidal water ponds at
Siu Tan. Uncommon species of seagrass Halophila
minor, Oval Halophila (Halophila
ovalis) and Marine Eel Grass (Zostera japonica), as well as a rare
plant species Water Fern (Ceratopteris thalictroides) have been
recorded in the literature. |
Table 9.2 Landscape
Character Areas within Assessment Area
Landscape Character Area |
Description |
LCA1 –
Inshore Water Landscape of Crooked Harbour (51.20 ha) |
This LCA refers to waterscape of Crooked Harbour.
The coastal area is mainly formed by natural coastline. The seascape is open
to the northeast towards with views of Lo Chi Pai, Fun Chau and Wong Nai
Chau. The southern part of this LCA forms a part of Yan Chau Tong Marine Park
for its high ecological value. |
LCA2 –
Coastal Upland and Hillside Landscape of Pan Pui Teng (32.28 ha) |
This LCA refers to natural upland prominences
generally above 40mPD along the coastal interface. It includes Shan O, Pan
Pui Teng and Lo Fu Shek Teng. The LCA forms part of Plover Cove Country Park.
Vegetation cover within the LCA comprises undisturbed native woodlands,
shrublands and grasslands. Rare and uncommon flora species, Incense Tree (Aquilaria sinensis), was found within
the area. |
LCA3 –
Settled Valley Landscape of Lai Chi Wo (18.29 ha) |
This LCA refers to the scattered settlements,
tacks, forests, agricultural plots and natural landscape within and in the
vicinity of Lai Chi Wo village. Village type development embedded into the
surrounding hillside forests, is in small scale and do not overly detract
from the dramatic mountain backdrop. The village is rich in cultural heritage
resources including the Grade 3 historic building namely Hip Tin Temple and
Hok Shan Monastery, as well as the Lai Chi Wo SAI. Rare species, as well as OVTs
can be recognised in the fung shui
woodland. |
LCA4 –
Settled Valley Landscape of Siu Tan Valley (5.14 ha) |
This LCA refers to natural upland prominences
generally above 40mPD along the coastal interface around Siu Tan Valley. It
includes Siu Tan, Shan Mei Au and Sam A Tsuen. The LCA forms part of Plover
Cove Country Park. The northeast of LCA comprises flat and low-lying
abandoned agricultural land which has been turned into intertidal water ponds
and freshwater marshes surrounded by shrubland and woodland. |
9.4.2 Visual Baseline Conditions
9.4.2.1
The visual assessment area is defined by the VE which is the area that
any part of the Project can be seen from, and is generally the viewshed formed
by natural/man-made features such as ridgelines, built form or area of
woodlands/large trees. The VE may contain area, which are fully visible, partly
visible and non-visible from the Project.
9.4.2.2
The VE of the Project covers the coastal areas of Lai Chi Wo and Siu
Tan, the upland hillside areas of Plover Cove Country Park including Pan Pui
Teng, Lo Fu Shek Teng, Chu Mun Tin and Shan Mei Au. In addition, the VE also
covers the inshore water of Crooked Harbour. Figure 9.6 illustrate the extent of VE.
9.4.2.3
The potential Visual Sensitive Receivers (VSRs) including the users from
nearby scenic points, hikers of nearby hiking trails and the marine travellers
have been identified. Table 9.3 presents
the locations and type of representative VSRs identified within the VE. The
location of each VSR is presented in Figure
9.6, and visual contexts from each VSR are presented in Figure 9.7a to Figure 9.7d.
Table 9.3 Locations and Types of VSRs
VSR ID |
Location |
VSR Name |
Type of
VSRs (Residential/ Recreational/ Occupational/ Transportation) |
Approximate
Minimum Viewing Distance to the Project, m |
VSR1 |
Affinity Pavilion |
Users at Affinity Pavilion |
Recreational |
55 |
VSR2 |
Lai Chi Wo Viewing Point |
Users at Lai Chi Wo Viewing
Point |
Recreational |
460 |
VSR3 |
Hiking Trail (near Kau Ma Shek) |
Hikers along Hiking Trail near
Kau Ma Shek |
Recreational |
250 |
VSR4 |
Crooked Harbour |
Marine Travellers in Crooked
Harbour |
Recreational, |
Within the Project |
9.5.1.1 The assessment of landscape and visual impact during construction and operation of the Project have been undertaken in accordance with Annexes 10 and 18 of the TM-EIAO and the EIAO GN No. 8/2010 “Preparation of Landscape and Visual Impact Assessment under the EIAO”. The methodology for the LVIA is described in the following sections.
9.5.2 Landscape Impact Assessment Methodology
Assessment Methodology
of Sensitivities of LCAs and LRs
9.5.2.1 Qualitative descriptions of LRs and LCAs have been provided and their extent quantified either by area or length. The sensitivities of the LCAs and LRs are evaluated and rated taking into account the following criteria:
· quality of landscape characters/resources;
· importance and rarity of special landscape elements;
· ability of the landscape to accommodate change;
· significance of the change in local and regional context, and
· maturity of the landscape.
9.5.2.2
The sensitivity ratings are
classified in Table 9.4.
Table 9.4 Definition
of Sensitivity Ratings for LRs and LCAs
Sensitivity Rating |
Definition |
High |
LR or LCA
of high quality and value, which is sensitive to even relatively small
changes. |
Medium |
LR or LCA of moderate quality and
value, which is reasonably tolerant to change. |
Low |
LR or LCA with low quality and
value, which is largely tolerant to change. |
Assessment Methodology
of Magnitude of Change to LRs and LCAs
9.5.2.3
The
next stage of the assessment process is the identification of the assessment of
the magnitude of change (rated as negligible, small, intermediate or large)
arising from the implementation of the project and the principal sources of
impact based on the following factors:
· Scale of the works and the associated supporting facilities;
· Compatibility of the project with the surrounding landscape context;
· Duration of impacts (temporary or occasion or permanent) under construction and operational phases; and
· Reversibility of change.
9.5.2.4 The magnitude of change is separately considered for the construction phase and operational phase; and the ratings are classified in Table 9.5.
Table 9.5 Definition
of Magnitude of Change to LRs and LCAs
Magnitude
of Change |
Definition |
Large |
LR
or LCA will suffer a major change. |
Intermediate |
LR
or LCA will suffer a moderate change. |
Small |
LR
or LCA will suffer a barely perceptible change. |
Negligible |
LR
or LCA will suffer no discernible change. |
9.5.2.5 There are various construction methods and sequence of works and operation procedures, which would generate landscape impacts. They will create various levels of landscape impacts due to removal of LRs and change of landscape character. The degree of significance of landscape impact is derived from the magnitude of change which the project will cause to the LRs/LCAs and the sensitivity of the LRs/LCAs. This makes a comparison between the landscapes, which would have existed in the absence of the Project with that predicted as a result of the implementation of the Project. The significance threshold for impact to LRs and LCAs is rated substantial, moderate, slight or insubstantial. The impacts may be beneficial or adverse. The degree of impact is defined in Table 9.6.
Table 9.6 Definition
of Landscape Impact
Landscape
Impact |
Definition |
Substantial |
Adverse/ beneficial impact where
the proposals will cause significant deterioration or improvement in existing
landscape quality. |
Moderate |
Adverse/ beneficial impact where
the proposal will cause a noticeable deterioration or improvement in existing
landscape quality. |
Slight |
Adverse/ beneficial impact where
the proposal will cause barely perceptible deterioration or improvement in
existing landscape quality. |
Insubstantial |
No discernible change in the
existing landscape quality. |
9.5.2.6
The
impact in relation to sensitivity and magnitude of
change of LRs and LCAs is
derived from the matrix as shown in Table 9.7.
Table 9.7 Landscape
Impact Assessment Matrix
Magnitude of Change Caused by
Project |
Sensitivity of LRs / LCAs |
||
Low |
Medium |
High |
|
Negligible |
Insubstantial |
Insubstantial |
Insubstantial |
Small |
Slight |
Slight/ Moderate |
Moderate |
Intermediate |
Slight/ Moderate |
Moderate |
Moderate/ Substantial |
Large |
Moderate |
Moderate/ Substantial |
Substantial |
9.5.3 Visual Impact Assessment Methodology
Assessment Methodology
of Sensitivity of VSRs
9.5.3.1
The assessment of sensitivity
has also been based on the quality and extent of the existing view. Therefore,
a view from a residential property, which would normally be considered the most
sensitive view, may be less so if for example it is degraded by existing
development or partially screened by intervening visual obstacles such as
existing vegetation and topography. Factors affecting the sensitivity of
receivers for evaluation of visual impacts include:
· 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.
9.5.3.2 Views available to the identified VSRs are rated according to their sensitivity broadly categorised in Table 9.8
Table 9.8 Sensitivity Ratings of VSRs
Sensitivity
Rating of VSR |
Definition |
High |
The VSR is highly sensitive to any
changes in the viewing experience – e.g. Residential properties where the
principle view is of the development site, formalized public viewpoints or
designed landscape vistas. |
Medium |
The VSR is moderately sensitive to
any changes in the viewing experience - Outdoor workers, office workers,
recreational users, residential properties where the secondary view is of the
development. |
Low |
The VSR is slightly sensitive to
any changes in the viewing experience - People travelling though the
landscape (by private/ public motorised transport or pedestrian). |
Assessment Methodology
of Magnitude of Change to VSRs
9.5.3.3
The
factors affecting the magnitude of change for assessing the visual impacts
include the following:
· Scale of the works;
· Compatibility of the project with the surrounding landscape and visual context;
· The extent of visibility of the proposed works and level of potential blockage of existing views;
· Viewing distance;
· Duration of impacts under construction and operational phases; and
· Reversibility of change.
9.5.3.4 The duration of the impact during construction and operation is determined based on the definition as shown in Table 9.9.
Table 9.9 Duration
of Visual Impact during Construction and Operation
Duration of Visual Impact |
Definition |
Construction |
|
Temporary |
Construction
works (including site investigation work) that will only be visible for a
short duration of the overall construction period. |
Permanent |
Construction
works that will be visible throughout the whole construction period. |
Operation |
|
Temporary |
Elements
of the Project that will be open to the view for a short period of time but
is likely disappear at an early stage in the operational phase with minimal
intervention or mitigation, for example, further growth of existing tree
screening. |
Permanent |
Views of
the Project that will remain permanently open to the view. |
9.5.3.5
The
magnitude of change to the views will be classified in accordance with the
definition as shown in Table 9.10.
Table 9.10 Definition of Magnitude of
Change to Views
Magnitude
of Change |
Definition |
Large |
e.g. large project works extent/
extensively blocked the views of VSRs / Project nature is not compatible to
existing visual context / works area located in the foreground of the visual
context / permanent impacts / irreversible of change |
Intermediate |
e.g. intermediate project works
extent / partially blocked the views of VSRs / project nature is fairly
compatible to existing visual context / works area located in the middle
ground of the visual context and not immediately adjacent to VSRs or their
views are already partially screened by existing topography, built structures
or vegetation / permanent impacts / irreversible of change |
Small |
e.g. small project works extent /
no blockage of views / project nature is compatible to existing visual
context / works area located in distance to VSRs / permanent impacts and
duration of construction impacts is short / Irreversible change or temporary
change of view |
Negligible |
e.g. no discernible change in
visual context |
9.5.3.6
The significance threshold for
visual impact is rated in a similar fashion to the landscape impact, i.e.
significant, moderate, slight and insubstantial and listed in Table 9.11.
Table 9.11 Degree of Significance
Significant
Threshold |
Definition |
Substantial |
Adverse / beneficial impact where
the proposal would cause significant deterioration or improvement in existing
visual quality. |
Moderate |
Adverse / beneficial impact where
the proposal would cause a noticeable deterioration or improvement in
existing visual quality. |
Slight |
Adverse / beneficial impact where
the proposal would cause a barely perceptible deterioration or improvement in
existing visual quality. |
Insubstantial |
No discernible change in the
existing visual quality. |
9.5.3.7
The
impact in relation to sensitivity and magnitude of
change of VSRs is
derived from the matrix as shown in Table 9.12.
Table 9.12 Visual Impact Assessment
Matrix
Magnitude
of Change caused by Project |
Sensitivity of VSRs |
||
Low |
Medium |
High |
|
Negligible |
Insubstantial |
Insubstantial |
Insubstantial |
Small |
Slight |
Slight/ Moderate |
Moderate |
Intermediate |
Slight/ Moderate |
Moderate |
Moderate/ Substantial |
Large |
Moderate |
Moderate/ Substantial |
Substantial |
9.5.4 Residual Impacts
9.5.4.1 Residual impacts which remain after commissioning of the development (operation Day 1 & Year 10) with mitigation measures implemented are evaluated based upon any unavoidable residual adverse landscape impacts to LRs and LCAs, as well as any avoidance residual adverse visual impacts to VSRs.
9.5.4.2 The level of impact is derived from the magnitude of change which the Project will cause to LRs, LCAs and VSRs taking into account its ability to tolerate change and effectiveness of mitigation measures.
9.5.5 Prediction of Acceptability of Impacts
9.5.5.1 An overall assessment of the acceptability, or otherwise, of the impacts will be carried out in accordance with the five criteria set out in Annex 10 of the TM-EIAO, namely:
Table 9.13 Description
of Overall Result of LVIA
Overall
Result of LVIA |
Description |
Beneficial |
If the project will complement the
landscape and visual character of its setting, will follow the relevant
planning objectives and will improve overall and visual quality. |
Acceptable |
If the assessment indicates that
there will be no significant effects on the landscape, no significant visual
effects caused by the appearance of the project, or no interference with key
views. |
Acceptable with mitigation measures |
If there will be some adverse
effects, but these can be eliminated, reduced or offset to a large extent by
specific measures. |
Unacceptable |
If the adverse effects are
considered too excessive and are unable to mitigate practically. |
Undetermined |
If significant adverse effects are
likely, but the extent to which they may occur or may be mitigated cannot be
determined from the study. Further detailed study will be required for the
specific effects in question. |
9.5.6 Broad Brush Tree Survey
9.5.6.1 Pursuant to Appendix H of EIA Study Brief of the Project (ESB-305/2017), for the requirements for LVIA, a broad brush tree survey shall be carried out and the impacts on the existing trees shall be addressed. According to DEVB TCW No. 4/2020 on Tree Preservation, a plant is considered as a tree if its trunk diameter measures 95mm or more at a height of 1.3m above ground level.
9.5.6.2 For LVIA purposes, the broad bush tree survey has been undertaken to estimate the numbers of existing trees, dominant species, maturity, rarity and any plant species of conservation interest (including Old and Valuable Trees (OVTs)) and/or rare/protected species) and areas for tree preservation.
9.5.6.3 The Project focuses on the pier structure itself, including the widening existing solid pier. Pursuant to Clause 26.03 (2) of the General Specification for Civil Engineering Works (2006 Edition), the extent of tree survey shall cover all existing trees present within the Project site or within 2m of the site boundary and any other trees likely to be affected by the works.
9.5.6.4 For this Project, the trees in the vicinity of Lai Chi Wo Piers are located on slope along the footpath whilst the pier improvement works will not encroach upon the slopes. Hence, the tree survey area covering the area of 2m outside the Project site adhering to the land area is considered adequate for the broad bush tree survey of the Project.
9.6 Landscape Resources, Landscape Character Areas and Visually Sensitive Receivers
9.6.1 Landscape Character Areas and Landscape Resources
Identification and
Sensitivity Evaluation of Landscape Resources
9.6.1.1 The LRs within the assessment area have been identified. Their extents and representative photos are shown in Figure 9.2 and Figure 9.3a to Figure 9.3c respectively. Table 9.14 shows the identified LRs and the corresponding sensitivity evaluation.
Table 9.14 Description of LRs
within the Assessment Area and their Sensitivities
ID |
Landscape Resources |
Area (ha) |
Quality (High, Medium, Low) |
Rarity (High, Medium, Low) |
Importance (local, regional, national or global) |
Ability to Accommodate Change |
Sensitivity (Low, Medium, High) |
||
LR1 |
Inshore
Water of Crooked Harbour near Lai Chi Wo |
40.14 |
High |
High |
Regional |
Low |
High |
||
Description: The LR refers to the inshore water within Crooked
Harbour. The landscape
quality is considered high due to its visibly clean sea water. Hard corals are present in this LR. The rarity is considered high for its status as Yan Chau Tong Marine Park.
Due to its high naturalness, this LR has low capacity to accommodate change. The
overall sensitivity is considered as ‘High’. |
|||||||||
LR2 |
Tidal
Mudflat at Lai Chi Wo Beach SSSI |
2.63 |
High |
High |
Regional |
Low |
High |
||
Description: The LR refers to a stretch of shoreline
containing mudflats and mangrove forests within the SSSI. The landscape
quality is considered high due to its high degree of naturalness. The rarity
is considered high for the presence of species of conservation importance
including Coastal Heritiera (Heritiera
littoralis), Marine Eel Grass (Zostera
japonica) and Oval Halophila (Halophila ovalis). Due to its high
naturalness and biodiversity, this LR has low capacity to accommodate change. The
overall sensitivity is considered as ‘High’. |
|||||||||
LR3 |
Rocky Shore
along the Coastline of Crooked Harbour |
9.34 |
Medium |
Medium |
Local |
Low |
Medium |
||
Description: The LR refers to natural rocky shore to
the south and north of the existing Lai Chi Wo Pier. It is an intertidal area that consists of solid rocks
and sand. No flora species of conservation importance were found or recorded.
Both landscape quality and rarity are considered medium. This LR is a natural feature
and has low capacity to accommodate change. The
overall sensitivity is considered as ‘Medium’. |
|||||||||
LR4 |
Woodland in
Plover Cove Country Park |
30.76 |
High |
High |
Local |
Low |
High |
||
Description: This LR refers to upslope woodland to the
west of the existing Lai Chi Wo Pier, which is within Plover Cove Country
Park. One flora species, Incense Tree (Aquilaria
sinensis) of conservation importance was identified in the ecological
survey. The rarity is considered high. This natural LR has low capacity to accommodate change. The overall sensitivity is considered as ‘High’. |
|||||||||
LR5 |
Shrubland/
Grassland in Plover Cove Country Park |
16.86 |
Medium |
Low |
Local |
Medium |
Medium |
||
Description: The LR refers to the upslope shrubland/grassland to
the west of the existing Lai Chi Wo Pier, which is within Plover Cove Country
Park. The shrubland and grassland in the Country Park are undergoing natural
succession but fragmented as patches within the assessment area. The
landscape quality is considered medium. There is no flora species of
conservation importance and therefore the rarity is considered low. This LR has medium capacity to accommodate change. The
overall sensitivity is considered as ‘Medium’. |
|||||||||
LR6 |
Agricultural
Land |
2.58 |
Medium |
Medium |
Local |
Medium |
Medium |
||
Description: The LR refers to the agricultural land developed on
the flatland to the south of the assessment area. The agricultural land is
mostly man-made with retention of a few trees and the landscape quality is
considered to be medium. No flora species of conservation importance was identified
during the ecological survey. The rarity is considered medium. This LR has medium capacity to accommodate change. The
overall sensitivity is considered as ‘Medium’. |
|||||||||
LR7 |
Watercourse |
0.32 |
High |
High |
Regional |
Low |
High |
||
Description: The LR refers to the natural watercourse running along Lai Chi Wo Village to
the open sea of Crooked Harbour. Both the landscape quality and rarity of this LR are considered to be
high. It is a natural watercourse and has low capacity to accommodate change. Eclipse Puffer (Takifugu ocellatus), an uncommon aquatic
species of conservation importance, was identified. Thus, the rarity is
considered high. The overall
sensitivity is considered as ‘High’. |
|||||||||
LR8 |
Lai Chi Wo
Pier |
0.02 |
Low |
Low |
Local |
High |
Low |
||
Description: The LR
refers to the existing Lai Chi Wo Pier serving as a key transportation mode
for residents and visitors in Lai Chi Wo. The existing condition of the pier
is poor, and therefore the landscape quality and value are considered to be
low. As piers are common in Hong Kong, the rarity is considered as low. Given
the built nature of the LR, the pier has a high capacity to accept change and
the overall sensitivity is considered as ‘Low’. |
|||||||||
LR9 |
Lai Chi Wo
Village Type Development |
1.95 |
Medium |
Medium |
Local |
Medium |
Medium |
||
Description: The LR
refers to the 1-3 storeys village houses in Lai Chi Wo Village. The Lai Chi
Wo village is an old Hakka village with about 400 years of history. The
village is rich in cultural heritage resources including the Grade 3 historic
building namely Hip Tin Temple and Hok Shan Monastery, as well as the Lai Chi
Wo SAI. OVTs are also found within this LR. The landscape quality and rarity
are considered to be medium. Given the built nature of the LR, this LR has medium capacity
to accommodate
change. The overall sensitivity is considered as ‘Medium’. |
|||||||||
LR10 |
Intertidal
Water Ponds at Siu Tan |
2.31 |
Medium |
Medium |
Local |
Medium |
Medium |
||
Description: The LR
refers to the intertidal water ponds at Siu Tan. Rare and uncommon flora species
e.g. Oval
Halophila (Halophila ovalis) and
Marine Eel Grass (Zostera japonica)
were recorded in the literature but they were not identified during the
ecology survey within the assessment area. Both the landscape quality and
rarity are considered to be medium. These ponds are man-made features and have low capacity to accommodate change. The overall sensitivity is considered as ‘Medium’. |
|||||||||
Identification
and Sensitivity Evaluation of Landscape Character Areas
9.6.1.2
The LCAs within the assessment
area have been identified with reference to Landscape Value Mapping of Hong
Kong. Their extents and representative photos are shown in Figure 9.4 and Figure 9.5
respectively. Table 9.15 shows the identified LCAs and the corresponding sensitivity
evaluation.
Table 9.15 Description of LCAs within the Assessment Area and their Sensitivities
ID |
Landscape
Character Area |
Area
(ha) |
Quality (High,
Medium, Low) |
Rarity (High,
Medium, Low) |
Importance (local,
regional, national or global) |
Ability
to Accommodate Change |
Sensitivity (Low,
Medium, High) |
LCA1 |
Inshore Water Landscape of Crooked
Harbour |
51.20 |
High |
High |
Regional |
Low |
High |
Description: This LCA refers to areas of inshore water lying
close to the shore of Crooked Harbour. The coastal area is mainly formed by
natural coastline. The seascape is open to the northeast towards with views
of Lo Chi Pai, Fun Chau and Wong Nai Chau. The southern part of this LCA
forms a part of Yan Chau Tong Marine Park. Hard corals are present in this
LCA. Both the landscape quality and rarity are
considered high. The LCA has a low capacity to
accept change. Its sensitivity is ‘High’. |
|||||||
LCA2 |
Coastal Upland and Hillside
Landscape of Pan Pui Teng |
32.28 |
High |
Medium |
Local |
Low |
High |
Description: This LCA refers to natural upland prominences generally
above 40mPD along the coastal interface. It includes Shan O, Pan Pui Teng and
Lo Fu Shek Teng. The LCA forms part of Plover Cove Country Park. Vegetation
cover within the LCA comprises undisturbed native woodlands, shrublands and
grasslands. Landscape quality is considered to be high. A rare and uncommon flora species, Incense
Tree (Aquilaria sinensis), was
found within the area.
Rarity is considered to be medium. The LCA has a low capacity to accept change. Its
sensitivity is ‘High’. |
|||||||
LCA3 |
Settled Valley Landscape of
Lai Chi Wo |
18.29 |
High |
Medium |
Local |
Medium |
High |
Description: This LCA refers to the scattered settlements, tacks, forests,
agricultural plots and natural landscape within and in the vicinity of Lai
Chi Wo village. Village type development embedded into the surrounding
hillside forests, is in small scale and do not overly detract from the
dramatic mountain backdrop. The village is rich in cultural heritage
resources including the Grade 3 historic building namely Hip Tin Temple and
Hok Shan Monastery, as well as the Lai Chi Wo SAI. Rare species, as well as
OVTs can be recognised in the fung shui
woodland. The landscape quality and rarity are considered to be high and
medium respectively. Given
the built nature of the LCA, this LCA has
a medium capacity to accept change. Its sensitivity is ‘High’. |
|||||||
LCA4 |
Settled Valley Landscape of Siu
Tan Valley |
5.14 |
High |
Medium |
Local |
Low |
High |
Description: This LCA refers to natural upland prominences generally above 40mPD
along the coastal interface around Siu Tan Valley. It includes Siu Tan, Shan
Mei Au and Sam A Tsuen. The LCA forms part of Plover Cove Country Park. The
northeast of LCA comprises flat and low-lying abandoned agricultural land
which has been turned into intertidal water ponds and freshwater marshes
surrounded by shrubland and woodland. The landscape quality is considered to
be high. Rare and uncommon flora species e.g. Oval Halophila (Halophila ovalis) and Marine Eel Grass
(Zostera japonica) were recorded in
the literature but they were not identified during the ecology survey within
the assessment area. The rarity is considered to be medium. The LCA has a low
capacity to accept change. Its sensitivity is ‘High’. |
9.6.2 Visually Sensitive Receivers
Identification
and Sensitivity Evaluation of Visually Sensitive Receivers
9.6.2.1 The VSRs within the VE have been identified. Their locations and representative visual contexts are shown in Figure 9.6 and Figure 9.7a to Figure 9.7d respectively. Table 9.16 shows the identified VSRs and the corresponding sensitivity evaluation.
Table 9.16 Description of VSRs within the Visual Envelope and their Sensitivities
VSR ID |
VSR
Location |
Minimum Viewing Distance (m) |
Type of VSR |
Quality of Existing View (Good, Fair, Poor) |
Alternative Views |
Degree of Visibility (Full, |
Duration of View (Long, Medium, Short) |
Frequency of View (Frequent, Occasional, Rare) |
Sensitivity
(Low, Medium, High) |
VSR1 |
Users at Affinity Pavilion |
55 |
Recreational |
Good |
Yes |
Full |
Short |
Occasional |
Low |
Description: The VSR mainly represents users at
Affinity Pavilion. The existing view towards east is characterised by natural
seascape and the existing pier, and the quality of view is considered good.
Due to transient stay of hikers and visitors at the pavilion, the sensitivity
of this VSR is ‘Low’. |
|||||||||
VSR2 |
Users at Lai Chi Wo Viewing Point |
460 |
Recreational |
Good |
Yes |
Full |
Short |
Occasional |
Low |
Description: The VSR mainly represents users at Lai
Chi Wo Viewing Point. The existing view towards north is the panoramic view
of natural seascape of Crooked Harbour, embraced by the upland hillside and
low-lying valley landscapes. The view farther away is characterised by island
landscape of Crooked Island and Fun Chau. The existing view of this VSR is
considered good. Due to transient stay of users at the pavilion, the
sensitivity of this VSR is ‘Low’. |
|||||||||
VSR3 |
Hikers along Hiking Trail near Kau Ma Shek |
250 |
Recreational |
Good |
Yes |
Full |
Short |
Occasional |
Low |
Description: This VSR includes hikers along hiking
trails. The existing view of this VSR towards the existing
pier is occasionally available due to the dense vegetation along the hiking
trails, except a small part of trail located along the coast which has a
direct view towards the pier. The overall sensitivity of this VSR is ‘Low’. |
|||||||||
VSR4 |
Marine Travellers in Crooked Harbour |
Within the
Project |
Recreational, Occupational, Transportation |
Good |
Yes |
Glimpse |
Short |
Occasional |
Low |
Description: This VSR includes the travellers on boats
and scheduled ferries to the existing Lai Chi Wo Pier. The view towards the
existing pier from this VSR was taken on the scheduled ferry to Lai Chi Wo.
The existing view of this VSR towards the existing pier is an unobstructed
view with the pier forms the background and the foreground dominated by the
open sea. As the marine travellers would experience a short duration of view
and not focus too much on the visual appearance of the pier, the overall
sensitivity of this VSR is ‘Low’. |
Identification of
Photomontage Viewpoints
9.6.2.2 Computer generated photomontages have been prepared to illustrate potential visual impact of the Project. The selection of representative viewpoints for photomontages are on the following bases:
· the viewpoints which cover the aboveground structure viewed from major public viewpoint represents key VSRs or VSR groups who would be potentially affected by the Project; and
· the viewpoints which shall be able to represent the worst-case scenarios and demonstrate the compatibility of the aboveground structures to the adjacent visual context and illustrate the visual effect during Day 1 without mitigation measures, Day 1 with mitigation measures and Year 10 with mitigation measures.
9.6.2.3 Four representative viewpoints selected for the preparation of photomontages for the visual impact assessment are described in Table 9.17, and the photomontages are shown in Figure 9.7 to Figure 9.10.
Table 9.17 Description of Viewpoints
Viewpoint |
Location |
Represented VSRs |
Description |
A |
Affinity Pavilion |
VSR1 |
This viewpoint is located at the
Affinity Pavilion along the hiking trail in proximity to the existing pier.
It is at a distance of approximately 55 m from the Project. The view is taken
at pedestrian level with an elevation of about 8 mPD to demonstrate the
VSRs staying at Affinity Pavilion. This viewpoint possesses direct, panoramic
view towards the Project site and Crooked Harbour with the backdrop of Kau Lo
Tau, Crooked Island and Fun Chau. |
B |
Lai Chi Wo Viewing Point |
VSR2 |
This viewpoint is located at Lai
Chi Wo Viewing Point which possesses an elevated, unobstructed view to the
Project. It is at a distance of approximately 460m from the Project. The
elevation of this viewpoint is about 3mPD. This viewpoint possesses direct,
panoramic view towards the Project site and Crooked Harbour with the backdrop
of Kau Lo Tau. |
C |
Hiking Trail near Kau Ma Shek |
VSR3 |
This viewpoint is located at the
hiking trail near Kau Ma Shek/Kau Lo Tau. It is at a distance of
approximately 250m from the Project. The view is taken at pedestrian level
with an elevation of about 12mPD to demonstrate the VSRs walking along the
hiking trail. In the presence of dense vegetation along the trail, this
viewpoint possesses a partial view towards the Project site and Crooked
Harbour with the backdrop of Tiu Tang Lung. |
D |
Scheduled Ferry in Crooked Harbour |
VSR4 |
This viewpoint is located on the
scheduled ferry shuttling back and forth the Lai Chi Wo Pier. It demonstrates
the view from the ferry to the pier. The elevation of this view point is
right above the sea surface. As the ferry approaches/departs from the pier,
this viewpoint possesses direct view towards the Project site. |
9.7 Identification of Potential Impacts
Potential Impacts
during Construction Phase
9.7.1.1 During the construction phase, potential landscape and visual impacts would arise from the following:
· Carrying out site investigation works for detailed design;
· Provision of plants, equipment and materials on working barge(s) for implementation of the Project;
· Provision of temporary berthing and mooring facilities using working barge and/or steel structures supported by piles to maintain access to Lai Chi Wo throughout the construction stage;
· Installation of piles for the new pier and as guide piles for the floating pontoon;
· Modification of the existing pier and construction of new pier structures (e.g. installation of precast elements of the pier structure etc.);
· Construction of associated facilities on the pier; and
· Removal of temporary berthing and mooring facilities after completion of the improvement works to the existing pier.
· Potential water quality impact.
Potential Impacts
during Operational Phase
9.7.1.2 During the operational phase, potential landscape and visual impacts would arise from the following:
· Presence of the proposed pier structure.
9.8 Landscape and Visual Impact before Mitigation
9.8.1 Landscape Impact Assessment before Mitigation
Magnitudes of Changes on Landscape Resources (LRs)
9.8.1.1 Table 9.18 summarises the magnitudes of changes for all LRs.
Table 9.18 Magnitudes of Changes on Landscape Resources
LR ID. |
LR Name |
Scale
of Works (Negligible
/ Small / Medium / Large) |
Reversibility (Reversible
/ Irreversible) |
Compatibility
with Surrounding Landscape (Low
/ Medium / High) |
Duration
of Impacts (Short
/ Medium / Long) |
Duration of Impacts (Short / Medium / Long) |
Magnitude of Change (Construction) (Negligible / Small / Intermediate / Large) |
Magnitude of Change (Operation) (Negligible / Small / Intermediate / Large) |
LR1 |
Inshore Water of Crooked Harbour near Lai
Chi Wo |
Small |
Irreversible |
Low |
Medium |
Long |
Small |
Small |
Description: This LR is a natural feature so that it has a low compatibility with
the man-made improved pier. During the construction phase, there is potential
water quality impacts due to construction activities, for example, site run-off or accidental spillage of
chemicals as identified in Section 5 of the water quality chapter.
Nevertheless, adverse water quality impact is not anticipated with full
implementation of water quality control measures. During Operational phase,
0.09 ha of this LR would be occupied. Considering the area of impact is
relatively small in comparison of the open sea of 40.14 ha, the magnitude of change is considered ‘Small’
for both construction and operation
phases. |
||||||||
LR2 |
Tidal Mudflat at Lai Chi Wo Beach SSSI |
Negligible |
N/A |
N/A |
N/A |
N/A |
Negligible |
Negligible |
Description: This LR is located at approximately 120m away from the Project and
therefore would not be affected during both construction and operational
phases. The magnitude of change is considered ‘Negligible’. |
||||||||
LR3 |
Rocky Shore along the coastline of
Crooked Harbour |
Small |
Irreversible |
Low |
Medium |
Long |
Small |
Negligible |
Description: This LR is a natural feature so that it has a low compatibility with
the man-made improved pier. During the construction phase, temporary berthing
and mooring facilities will be provided beside the existing Lai Chi Wo Pier.
Part of this LR would be occupied by the temporary pier. The magnitude of
change is considered ‘Small’ for the construction phase. After the pier improvement works, the
temporary pier will be demolished. The magnitude of change is considered ‘Negligible’
for the operation phase. |
||||||||
LR4 |
Woodland
in Plover Cove Country Park |
Negligible |
N/A |
N/A |
N/A |
N/A |
Negligible |
Negligible |
Description: The Project would not encroach onto this LR and therefore would not affect
it during both construction and operational phases. The magnitude of change
is considered ‘Negligible’. |
||||||||
LR5 |
Shrubland/
Grassland in Plover Cove Country Park |
Negligible |
N/A |
N/A |
N/A |
N/A |
Negligible |
Negligible |
Description: The Project would not encroach onto this LR and therefore would not
affect it during both construction and operational phases. The magnitude of
change is considered ‘Negligible’. |
||||||||
LR6 |
Agricultural
Land |
Negligible |
N/A |
N/A |
N/A |
N/A |
Negligible |
Negligible |
Description: This LR is located at approximately 350m away from the Project and
therefore would not be affected during both construction and operational
phases. The magnitude of change is considered ‘Negligible’. |
||||||||
LR7 |
Watercourse |
Negligible |
N/A |
N/A |
N/A |
N/A |
Negligible |
Negligible |
Description: This LR is located at approximately 210m away from the Project and
therefore would not be affected during both construction and operational
phases. The magnitude of change is considered ‘Negligible’. |
||||||||
LR8 |
Lai Chi Wo Pier |
Medium |
Irreversible |
High |
Medium |
Long |
Intermediate |
Intermediate |
Description: During construction phase, the construction works would be the
provision and demolition of temporary berthing and mooring facilities and the
extension of the existing pier. During operational phase, part of this LR
would be replaced by an improved pier structure. The magnitude of change is
considered ‘Intermediate’ for both
construction and operational phases. |
||||||||
LR9 |
Lai Chi Wo Village Type Development |
Negligible |
N/A |
N/A |
N/A |
N/A |
Negligible |
Negligible |
Description: This LR is located at approximately 300m away from the Project and
therefore would not be affected during both construction and operational
phases. The magnitude of change is considered ‘Negligible’. |
||||||||
LR10 |
Intertidal
Water Ponds at Siu Tan |
Negligible |
N/A |
N/A |
N/A |
N/A |
Negligible |
Negligible |
Description: This LR is located at approximately 450m away from the Project and
therefore would not be affected during both construction and operational
phases. The magnitude of change is considered ‘Negligible’. |
Magnitude of Change on
Landscape Character Areas (LCAs)
9.8.1.2 Table 9.19 summarises the magnitudes of changes for all LCAs.
Table 9.19 Magnitudes of Changes on Landscape Character Areas
LCA ID |
LCA Name |
Scale of Works (Negligible / Small / Medium /
Large) |
Reversibility (Reversible / Irreversible) |
Compatibility with Surrounding Landscape (Low /
Medium / High) |
Duration of Impacts (Construction) (Short / Medium / Long) |
Duration of Impacts (Operation) (Short / Medium / Long) |
Magnitude of Change (Construction) (Negligible / Small / Intermediate / Large) |
Magnitude of Change (Operation) (Negligible / Small / Intermediate / Large) |
LCA1 |
Inshore Water Landscape of Crooked
Harbour |
Small |
Irreversible |
Medium |
Medium |
Long |
Small |
Small |
Description: During construction phase, there is potential water
quality impacts due to the construction activities. Part of this LCA would be
replaced by an improved pier structure. Deterioration of water quality may
affect the landscape value of this LCA. During operational phase, the
improved pier would occupy about 0.13 ha of this LCA. The magnitude of change
is considered ‘Small’ for both
construction and operational phases. |
||||||||
LCA2 |
Coastal Upland and Hillside
Landscape of Pan Pui Teng |
Small |
Irreversible |
High |
Medium |
Long |
Small |
Negligible |
Description: During construction phase, this LCA
would be affected by the construction of the temporary berthing and mooring
facilities. The magnitude of change is considered ‘Small’. During
operational phase, the landscape character would not be altered as there
would not be any changes to the land use. The magnitude of change is
considered to be ‘Negligible’. |
||||||||
LCA3 |
Settled Valley Landscape of
Lai Chi Wo |
Negligible |
N/A |
N/A |
N/A |
N/A |
Negligible |
Negligible |
Description: The Project would not encroach onto this LCA and therefore would not
affect it during construction and operational phases. The magnitude of change
is considered ‘Negligible’. |
||||||||
LCA4 |
Settled Valley Landscape of Siu
Tan Valley |
Negligible |
N/A |
N/A |
N/A |
N/A |
Negligible |
Negligible |
Description: The Project would not encroach onto this LCA and therefore would not
affect it during construction and operational phases. The magnitude of change
is considered ‘Negligible’. |
Potential Impacts on
Landscape Resources before Mitigation
9.8.1.3 The potential landscape impacts without mitigation measures for individual LRs are derived from the sensitivities and magnitudes of changes in accordance with Table 9.7 and summarised in Table 9.20.
Table 9.20 Potential Impacts on Landscape Resources without Mitigation
LR ID |
LR Name |
Sensitivity
(Low / Medium / High) |
Magnitude
of Change |
Significant
Threshold (Unmitigated) (Insubstantial / Slight / Moderate / Substantial) |
||
Construction |
Operation |
Construction |
Operation |
|||
LR1 |
Inshore Water of Crooked Harbour near Lai
Chi Wo |
High |
Small |
Small |
Moderately Adverse |
Moderately Adverse |
Description: The sensitivity of
this LR is ‘High’. The magnitude of change for construction phase is ‘Small’
due to the limited impact of water quality. During operation phase, as the
newly constructed pier would occupy 0.13 ha of this LR, the magnitude of
change is considered ‘Small’. The significant threshold is therefore
considered as ‘Moderately Adverse’
for both construction and operational phases. |
||||||
LR2 |
Tidal Mudflat at Lai Chi Wo Beach SSSI |
High |
Negligible |
Negligible |
Insubstantial |
Insubstantial |
Description: This LR is located at approximately 120m away from the Project. Hence,
the Project would not affect this LR during both construction and operational
phases. The significant threshold is therefore considered as ‘Insubstantial’ for both construction
and operational phases. |
||||||
LR3 |
Rocky Shore along the Coastline of
Crooked Harbour |
Medium |
Small |
Negligible |
Slightly |
Insubstantial |
Description: The sensitivity of
this LR is ‘Medium’. Part of this LR would be temporarily occupied by the
temporary pier during construction phase, which would be demolished after the
construction of the new pier. The magnitude of change for construction and
operational phases are ‘Small’ and ‘Negligible’ respectively. The significant
thresholds are therefore considered as ‘Slightly
Adverse’ and ‘Insubstantial’
for construction and operational phases respectively. |
||||||
LR4 |
Woodland in Plover Cove Country Park |
High |
Negligible |
Negligible |
Insubstantial |
Insubstantial |
Description: The Project would not encroach onto this LR and therefore would not
affect it during both construction and operational phases. The
significant threshold is therefore considered as ‘Insubstantial’ for both construction and operational phases. |
||||||
LR5 |
Shrubland/ Grassland in Plover Cove
Country Park |
Medium |
Negligible |
Negligible |
Insubstantial |
Insubstantial |
Description: The Project would not encroach onto this LR and therefore would not
affect it during both construction and operational phases. The
significant threshold is therefore considered as ‘Insubstantial’ for both construction and operational phases. |
||||||
LR6 |
Agricultural
Land |
Medium |
Negligible |
Negligible |
Insubstantial |
Insubstantial |
Description: This LR is located at approximately 350m away from the Project and
therefore would not be affected during both construction and operational
phases. The significant threshold is therefore considered as ‘Insubstantial’ for both construction
and operational phases. |
||||||
LR7 |
Watercourse |
High |
Negligible |
Negligible |
Insubstantial |
Insubstantial |
Description: This LR is located at approximately 210m away from the Project and
therefore would not be affected during both construction and operational
phases. The significant threshold is therefore considered as ‘Insubstantial’ for both construction
and operational phases. |
||||||
LR8 |
Lai Chi Wo Pier |
Low |
Intermediate |
Intermediate |
Slightly |
Slightly Beneficial |
Description: The sensitivity of
this LR is ‘Low’. This LR would undergo construction works during the
construction phase and would be replaced by an improved pier during the
operational phase. The magnitude of change for construction and operational
phases are therefore ‘Intermediate’ for both phases. The significant
thresholds are considered as ‘Slightly
Adverse’ and ‘Slightly Beneficial’
for construction and operational phases respectively. |
||||||
LR9 |
Lai Chi Wo Village Type Development |
Medium |
Negligible |
Negligible |
Insubstantial |
Insubstantial |
Description: This LR is located at approximately 300m away from the Project and
therefore would not be affected during both construction and operational
phases. The significant threshold is therefore considered as ‘Insubstantial’ for both construction
and operational phases. |
||||||
LR10 |
Intertidal Water Ponds at Siu Tan |
Medium |
Negligible |
Negligible |
Insubstantial |
Insubstantial |
Description: This LR is located at approximately 450m away from the Project and
therefore would not be affected during both construction and operational
phases. The significant threshold is therefore considered as ‘Insubstantial’ for both construction
and operational phases. |
Potential Impacts on
Landscape Character Areas before Mitigation
9.8.1.4 The potential landscape impacts without mitigation measures for individual LCAs are derived from the sensitivities and magnitudes of changes in accordance with Table 9.7 and summarised in Table 9.21.
Table 9.21 Potential Impacts on Landscape Character Areas without Mitigation
LCA ID |
LCA Name |
Sensitivity (Low / Medium / High) |
Magnitude of Change |
Significant Threshold (Unmitigated) (Insubstantial
/ Slight / Moderate / Substantial) |
||
Construction |
Operation |
Construction |
Operation |
|||
LCA1 |
Inshore
Water Landscape of Crooked Harbour |
High |
Small |
Small |
Moderately Adverse |
Moderately Adverse |
Description: The sensitivity of
this LCA is ‘High’. The water quality impact during both construction and
operational phases is limited. The newly constructed pier would only occupy
0.13 ha of this LCA. Hence, the magnitude of change for both construction and
operational phases are therefore ‘Small’. The significant threshold is
therefore considered as ‘Moderately
Adverse’ for both construction and operational phases. |
||||||
LCA2 |
Coastal
Upland and Hillside Landscape of Pan Pui Teng |
High |
Small |
Negligible |
Moderately Adverse |
Insubstantial |
Description: The sensitivity of
this LCA is ‘High’. Part of this LCA would be temporarily occupied by the
temporary pier during construction phase, which would be demolished after the
construction of the new pier. The magnitude of change for construction and
operational phases are ‘Small’ and ‘Negligible’ respectively. The significant
thresholds are therefore considered as ‘Moderately
Adverse’ and ‘Insubstantial’
for construction and operational phases respectively. |
||||||
LCA3 |
Settled
Valley Landscape of Lai Chi Wo |
High |
Negligible |
Negligible |
Insubstantial |
Insubstantial |
Description: The Project would not encroach onto this LCA and therefore would not
affect it during both construction and operational phases. The
significant threshold is therefore considered as ‘Insubstantial’ for both construction and operational phases. |
||||||
LCA4 |
Settled
Valley Landscape of Siu Tan Valley |
High |
Negligible |
Negligible |
Insubstantial |
Insubstantial |
Description: The Project would not encroach onto this LCA and therefore would not
affect it during both construction and operational phases. The
significant threshold is therefore considered as ‘Insubstantial’ for both construction and operational phases. |
9.8.2 Visual Impact Assessment before Mitigation
Magnitude of Change on Visually
Sensitive Receivers
9.8.2.1 Table 9.22 summarises the magnitudes of changes for all VSRs for both construction and operation phases.
Table 9.22 Magnitude of Change on Visually Sensitive Receivers
VSR ID |
VSR Name |
Scale of Works (Negligible /
Small / Medium / Large) |
Reversibility (Reversible /
Irreversible) |
Blockage |
Compatibility with Surrounding
Landscape |
Duration
of Impacts (Construction) (Short / Medium / Long) |
Duration
of Impacts (Operation) (Short / Medium / Long) |
Magnitude
of Change (Construction) (Negligible / Small /
Intermediate / Large) |
Magnitude
of Change (Operation) (Negligible / Small / Intermediate
/ Large) |
VSR1 |
Users at Affinity Pavilion |
Medium |
Irreversible |
None |
Medium |
Medium |
Long |
Intermediate |
Intermediate |
Description: During construction phase, this VSR
would have a direct unobstructed view of the construction activities. The
Project involves the construction and demolition of temporary berthing and
mooring facilities and extension of the pier which stretches out towards the
open sea from the existing pier. Given the separation distance of 55m between
the Project and this VSR, scale of works as seen from the VSR is considered ‘Medium’.
As additional lights in the pier will be kept to minimal for safety purpose,
potential visual, glare and lighting impacts due to the physical installation
of lighting equipment are anticipated to be low. The duration of construction
will be about 3 years and the duration of impact is considered ‘Medium’
during the construction phase. The view at this VSR at operational
phase would be a pier with the total length of 155 m from the existing of 64
m. The presence of permanent structures will result in ‘Long’ duration
of impacts during the operational phase. The reversibility
is considered ‘Irreversible’ due to the construction of permanent structures
of the Project. As a small portion of the seascape and
ridgeline in the background would be blocked, the compatibility with
surrounding landscape is considered ‘Medium’. The magnitude of change is considered ‘Intermediate’ for both construction
and operational phases. |
|||||||||
VSR2 |
Users at
Lai Chi Wo Viewing Point |
Small |
Irreversible |
None |
Medium |
Medium |
Long |
Small |
Small |
Description: Construction activities during construction phase
and the improved pier structure during operational phase would be visible to
this VSR with a minimum viewing distance of approximately 400m. The scale of
works is therefore considered “Small”. Given the large separation between the Project and the VSR, potential
visual, glare and lighting impacts due to physical installation of lighting
equipment are anticipated to be minimal. The duration of construction will be
about 3 years and the duration of impact is considered ‘Medium’ during the
construction phase. The presence of permanent structures will result in
‘Long’ duration of impacts during the operational phase. The reversibility is considered
‘Irreversible’ due to the construction of permanent structures of the
Project. As a limited portion of the seascape would be
blocked, the compatibility with surrounding landscape is considered ‘Medium’.
The magnitude of change is considered ‘Small’ for both construction and operational phases. |
|||||||||
VSR3 |
Hikers
along Hiking Trail near Kau Ma Shek |
Small |
Irreversible |
None |
Medium |
Medium |
Long |
Small |
Small |
Description: During construction phase and operational
phase, the view of this VSR towards the Project is occasionally visible due
to the dense vegetation along the hiking trails. Given
the separation distance of 250m between the Project and this VSR, the scale
of works as seen from the VSR is considered ‘Small’. Given
the large separation between the Project and the VSR, potential visual, glare
and lighting impacts due to the physical installation of lighting equipment are
anticipated to be minimal. The duration of construction will be about 3 years
and the duration of impact is considered ‘Medium’ during the construction
phase. During the operational phase, the presence of permanent structures
will result in ‘Long’ duration of impacts. The reversibility is considered
‘Irreversible’ due to the construction of the permanent structures of
the Project. As the Project will only obstruct a limited portion of the
seascape, the compatibility with surrounding landscape is considered
‘Medium’. The
magnitude of change is considered ‘Small’ for both construction and operational phases. |
|||||||||
VSR4 |
Marine Travellers in Crooked Harbour |
Large |
Irreversible |
None |
Medium |
Medium |
Long |
Large |
Large |
Description: During construction and operational phases, the marine travellers will
approach and depart from the pier. The view of this VSR towards the pier
would be very substantial. With a close-up view of the Project from the
marine vessels, the scale of works as seen from the VSR is considered
‘Large’. As additional lights in the pier will be kept to minimal for safety
purpose, potential visual, glare and lighting impacts due to the physical installation
of lighting equipment are anticipated to be low. The duration of construction
will be about 3 years and the duration of impact is considered ‘Medium’
during the construction phase. During the operational phase, the presence of
permanent structures will result in ‘Long’ duration of impacts. The reversibility is considered
‘Irreversible’ due to the construction of the permanent structures of
the Project. As the Project will obstruct a small portion of the seascape,
the compatibility with surrounding landscape is considered ‘Medium’. The magnitude of change is considered ‘Large’ for both construction and
operational phases. |
Potential Impacts on
Visually Sensitive Receivers before Mitigation
9.8.2.2 The potential visual impacts without mitigation measures for individual VSRs are derived from the sensitivities and magnitudes of changes in accordance with Table 9.12 and summarised in Table 9.23.
Table 9.23 Potential Impacts on Visually Sensitive Receivers without Mitigation
VSR ID |
VSR
Name |
Sensitivity (Low / Medium / High) |
Magnitude of Change (Negligible / Small /
Intermediate / Large) |
Significant Threshold (Unmitigated) (Insubstantial
/ Slight / Moderate / Substantial) |
||
Construction |
Operation |
Construction |
Operation |
|||
VSR1 |
Users at Affinity Pavilion |
Low |
Intermediate |
Intermediate |
Slightly |
Slightly |
Description: The sensitivity of
this VSR is ‘Low’. The magnitude of change for both construction and
operational phases are ‘Intermediate’. During construction phase, there would
be visual disturbance from the construction area due to the presence of
construction machinery, while during operational phase, visual content would
be enhanced due to the enhanced aesthetics of the improved pier. The
significant thresholds are therefore considered as ‘Slightly Adverse’ and ‘Slightly
Beneficial’ for both construction and operational phases respectively. |
||||||
VSR2 |
Users at Lai Chi Wo Viewing Point |
Low |
Small |
Small |
Slightly |
Slightly |
Description: The sensitivity of this VSR is ‘Low’. The
magnitude of change for both construction and operational phases are ‘Small’.
During construction phase, there would be visual disturbance from the
construction area due to the presence of construction machinery, while during operational phase, visual content
would be enhanced due to the enhanced aesthetics of the improved pier. The significant thresholds are
therefore considered as ‘Slightly
Adverse’ and ‘Slightly Beneficial’
for both construction and operational phases respectively. |
||||||
VSR3 |
Hikers along Hiking Trail near Kau Ma Shek |
Low |
Small |
Small |
Slightly |
Slightly |
Description: The sensitivity of
this VSR is ‘Low’. The magnitude of change for both construction and
operational phases are ‘Small’. During construction phase, there would be
visual disturbance from the construction area due to the presence of
construction machinery, while during operational phase visual content would
be enhanced due to the enhanced aesthetics of the improved pier. The
significant thresholds are therefore considered as ‘Slightly Adverse’ and ‘Slightly
Beneficial’ for both construction and operational phases respectively. |
||||||
VSR4 |
Marine Travellers in Crooked Harbour |
Low |
Large |
Large |
Moderately |
Moderately |
Description: The sensitivity of
this VSR is ‘Low’. The magnitude of change for both construction and
operational phases are ‘Large’. During construction phase, there would be
visual disturbance from the construction area, while during operational phase
due to the presence of construction machinery, visual content would be
enhanced due to the enhanced aesthetics of the improved pier. The significant
thresholds are therefore considered as ‘Moderately
Adverse’ and ‘Moderately Beneficial’
for both construction and operational phases respectively. |
9.9
Landscape and Visual
Mitigation Measures
9.9.1 Construction Phase
9.9.1.1 The following recommendations are proposed for the preliminary design in response to the above implications. At the planning stage, measures to avoid, reduce and/or compensate for the potential impacts should be considered with priority given to avoidance of impacts. Landscape and visual mitigation measures in the construction phase are summarised in Table 9.24. Recommended landscape and visual mitigation plan is provided in Figure 9.8.
Table 9.24 Recommended Mitigation Measures in Construction Phase
ID |
Mitigation Measures |
Responsible Agent for Implementation
of Mitigation Measures |
CM1 |
Minimisation
of Construction Area The
footprint of the improved pier structure should be minimised as far as
practicable to minimise the potential landscape and visual disturbance. |
Project
Proponent - CEDD |
CM2 |
Site Hoarding To reduce
negative visual impact, where practicable, construction site hoarding should
be erected around any active works area to screen pedestrian level views into
the construction area from visually sensitive receivers. |
Project Proponent - CEDD |
CM3 |
Construction Programme Employ
practicable construction techniques to streamline construction programme,
minimise the duration of plant operations. Consider prefabrication of
building elements offsite to minimise on site works and construction period. |
Project Proponent - CEDD |
CM4 |
Water Quality Control Precautionary
measures should be adopted to avoid the untreated surface runoff directly
discharging into the sea, particularly during rainy condition, and any
pollutants / wastes / debris from entering the sea. |
Project
Proponent - CEDD |
CM5 |
Appearance of Construction Plants / Machinery A suitable
colour scheme of construction machines and plants should be adopted where
possible. |
Project
Proponent - CEDD |
CM6 |
Lighting Control Construction day and night-time lighting should
be controlled to minimise glare impact to adjacent VSRs during the
construction stage. |
Project
Proponent - CEDD |
9.9.2 Operational Phase
9.9.2.1 During the operational phase of development, measures can be taken to reduce certain impacts to a practicable minimum. Landscape and visual mitigation measures during operation are summarised in Table 9.25. Recommended landscape and visual mitigation plan is provided in Figure 9.8.
Table 9.25 Recommended Mitigation Measures in Operation Phase
ID |
Mitigation
Measures |
Responsible
Agent for Implementation of Mitigation Measures (Design
and Construction Stage) |
Responsible
Agent for Implementation of Mitigation Measures (Operation
and Maintenance) |
OM1 |
Sensitive Design and Disposition of the
Pier Structures The proposed hard structures of the pier
should be sensitively designed to become compatible with the existing
landscape context. The footprint of the pier should also be minimised while
optimising the berthing depth and length of the pier to reduce the landscape
impact. The materials used for decoration such as external paint, metal
cladding, tile, stone cladding should be compatible to the neighbouring
natural environment. The orientation
of the proposed hard structures of the pier should aim at minimising visual
intrusion to visually sensitive receivers as far as practicable. Additional
lights in the new pier will be kept to as minimal for safety purpose. Night-time
lighting of the pier shall also be controlled to minimise glare impact to
adjacent VSRs during the operation phase. If solar panels are to be installed
as renewable energy source, non-reflective solar panels should be installed
to avoid glare from direct or reflected sunlight. |
Project Proponent – CEDD |
Operator – HAD (Via Contractor) |
9.10 Residual Landscape and Visual Impacts after Mitigation
9.10.1 Photomontages
9.10.1.1 As discussed in Section 9.6.2, representative viewpoints have been selected for the assessment of potential visual impact from the Project. Computer-generated photomontages have been prepared to illustrate the visual appearance of the Project at Day 1 with no mitigation measures, Day 1 with mitigation measures and Year 10 with mitigation measures. Discussion of residual visual impact from the photomontages at each representative viewpoint is provided in the following sections.
Viewpoint A at VSR1
(Affinity Pavilion)
9.10.1.2 Figure 9.9ai and Figure 9.9aii show the overall view of the Project where the pier is directly visible towards northeast from the Affinity Pavilion. The Project site has been optimised to reduce the extents of associated visual impacts. The improved pier structure has been sensitively designed in a manner compatible with the existing pier structures. When comparing the visual appearance of the existing pier in poor condition and the improved pier in the photomontages, the Project is anticipated to provide slightly beneficial visual impact to this viewpoint. In addition, the visual appears of the pier can be further enhanced by the colour and textural treatment of built structures and furniture and therefore the visual impact could be enhanced to be moderately beneficial.
Viewpoint B at VSR2 (Lai Chi Wo Viewing Point)
9.10.1.3 Figure 9.9bi and Figure 9.9bii show the overall view of the Project where the pier is directly visible towards north from the elevated Lai Chi Wo Viewing Point. The pier is located at approximately 460m from the pier and the scale of the pier from the panoramic view from the viewing point is considered small. The footprint of the pier has been minimised to reduce the visual impact of the pier, while providing sufficient water depth for vessel mooring and berthing.
9.10.1.4 The improved pier structure has been sensitively designed in a manner compatible with the existing pier structures. When comparing the visual appearance of the existing pier in poor condition and the improved pier in the photomontages, the Project is anticipated to provide slightly beneficial visual impact to this viewpoint. In addition, the visual appears of the pier can be further enhanced by colour and textural treatment of built structures and therefore the visual impact could be enhanced to be moderately beneficial.
Viewpoint C at VSR3
(Hiking Trail near Kau Ma Shek)
9.10.1.5 Figure 9.9ci and Figure 9.9cii show the view of the Project where the pier is fully visible towards south from this viewpoint located at approximately 250m from the Project. The Project site has been optimised to reduce the extents of associated visual impacts. The scale of the pier from the viewing point is considered small. The improved pier structure has been sensitively designed in a manner compatible with the existing pier structures. When comparing the visual appearance of the existing pier in poor condition and the improved pier in the photomontages, the Project is anticipated to provide slightly beneficial visual impact to this viewpoint. In addition, the visual appears of the pier can be further enhanced by the colour and textural treatment of built structures and furniture and therefore the visual impact could be enhanced to be moderately beneficial.
Viewpoint D at VSR4
(Scheduled Ferry in Crooked Harbour)
9.10.1.6 Figure 9.9di and Figure 9.9dii show the overall view of the Project where the pier is directly visible towards south from this viewpoint. The Project site has been optimised to reduce the extents of associated visual impacts. The improved pier structure has been sensitively designed in a manner compatible with the existing pier structures. When comparing the visual appearance of the existing pier in poor condition, the Project is anticipated to provide moderately beneficial visual impact to this viewpoint.
9.10.2 Residual Impact on Landscape Resources
9.10.2.1
The residual
landscape impacts on LRs with mitigation measures are assessed and summarised
in Table 9.26.
Table 9.26 Summary of Impact Assessment on Landscape Resources
LR ID |
LR Name |
Significant Threshold (Unmitigated) |
Recommended Mitigation Measures |
Significant Threshold (Mitigated) (Insubstantial / Slight / Moderate / Substantial) |
|||
Construction |
Operation |
Construction |
Operation Day 1 |
Operation Year 10 |
|||
LR1 |
Inshore
Water of Crooked Harbour near Lai Chi Wo |
Moderately |
Moderately |
CM1,
CM3, CM4, OM1 |
Slightly
Adverse |
Slightly
Adverse |
Slightly
Adverse |
Description: The construction area
for the Project has been optimised to reduce the extent of associated
landscape impacts. The total number of pile installations would also be
minimised after the pier improvement works. In addition to careful scheduling
of works, off-site prefabrication would be adopted where practicable to
shorten the construction period as well as reduce the duration for which the
landscape resources would be affected. The implementation of proper water
quality control for construction phase would reduce the potential of unwanted
debris/waste and untreated surface runoff being discharged into the sea. The
residual impact during construction phase would therefore reduce to
‘Slightly Adverse’. With sensitive design and disposition of
the pier structure to minimise visual intrusion to the VSRs, the
improved pier structure would have higher compatibility with the surrounding
landscape. The residual impact at Day 1 and Year 10 operations would
therefore become ‘Slightly Adverse’. |
|||||||
LR2 |
Tidal
Mudflat at Lai Chi Wo Beach SSSI |
Insubstantial |
Insubstantial |
N/A |
Insubstantial |
Insubstantial |
Insubstantial |
Description: This LR would not be affected by the Project, and
mitigation measures are not required. |
|||||||
LR3 |
Rocky
Shore along the Coastline of Crooked Harbour |
Slightly Adverse |
Insubstantial |
CM1,
CM3 |
Insubstantial |
Insubstantial |
Insubstantial |
Description: The construction area
for the Project has been optimised to reduce the extent of associated
landscape impacts. The total number of pile installations would also be
minimised after the pier improvement works. In addition to careful scheduling
of works, off-site prefabrication would be adopted where practicable to
shorten the construction period as we as reduce the duration for which the
landscape resources would be affected. The residual impact during construction
phase would therefore reduce to ‘Insubstantial’. This LR would not be affected by the Project
during operational phase, and mitigation measures are not required. |
|||||||
LR4 |
Woodland
in Plover Cove Country Park |
Insubstantial |
Insubstantial |
N/A |
Insubstantial |
Insubstantial |
Insubstantial |
Description: This LR would not be affected by the Project, and
mitigation measures are not required. |
|||||||
LR5 |
Shrubland/
Grassland in Plover Cove Country Park |
Insubstantial |
Insubstantial |
N/A |
Insubstantial |
Insubstantial |
Insubstantial |
Description: This LR would not be affected by the Project, and
mitigation measures are not required. |
|||||||
LR6 |
Agricultural Land |
Insubstantial |
Insubstantial |
N/A |
Insubstantial |
Insubstantial |
Insubstantial |
Description: This LR would not be affected by the Project, and
mitigation measures are not required. |
|||||||
LR7 |
Watercourse |
Insubstantial |
Insubstantial |
N/A |
Insubstantial |
Insubstantial |
Insubstantial |
Description: This LR would not be affected by the Project, and
mitigation measures are not required. |
|||||||
LR8 |
Lai
Chi Wo Pier |
Slightly Adverse |
Slightly Beneficial |
CM1,
CM3, OM1 |
Insubstantial |
Moderately Beneficial |
Moderately Beneficial |
Description: The construction area for the
proposed pier improvement works has been optimised to reduce the extent of
associated landscape impacts. In addition to careful scheduling of works,
off-site prefabrication would be adopted where practicable to
shorten the construction period as well as reduce the duration for which the
landscape resources would be affected. The
residual impact during construction phase would therefore reduce to
‘Insubstantial’. The sensitive design of the pier will enhance
the visual aesthetics of the improved pier in comparison with the existing
pier. The materials used for decoration such as external paint, metal
cladding, tile, stone cladding should be compatible to the neighbouring
natural environment. The residual impact at Day 1 and Year 10 operations
would therefore become ‘Moderately Beneficial’. |
|||||||
LR9 |
Lai
Chi Wo Village Type Development |
Insubstantial |
Insubstantial |
N/A |
Insubstantial |
Insubstantial |
Insubstantial |
Description: This LR would not be affected by the Project, and
mitigation measures are not required. |
|||||||
LR10 |
Intertidal
Water Ponds at Siu Tan |
Insubstantial |
Insubstantial |
N/A |
Insubstantial |
Insubstantial |
Insubstantial |
Description: This LR would not be affected by the Project, and
mitigation measures are not required. |
9.10.3 Residual Impact on Landscape Character Areas
9.10.3.1
The residual
landscape impacts on LCAs with mitigation measures are assessed and summarised
in Table 9.27.
Table 9.27 Summary of Impact Assessment on Landscape Character Areas
LCA ID |
LCA Name |
Significant Threshold (Unmitigated) |
Recommended Mitigation Measures |
Significant Threshold (Mitigated) (Insubstantial / Slight / Moderate / Substantial) |
|||
Construction |
Operation |
Construction |
Operation Day 1 |
Operation Year 10 |
|||
LCA1 |
Inshore Water Landscape of Crooked Harbour |
Moderately Adverse |
Moderately Adverse |
CM1,
CM3, CM4, OM1 |
Slightly |
Slightly Adverse |
Slightly Adverse |
Description: The construction area
for the Project has been optimised to reduce the extent of associated
landscape impacts. In addition to careful scheduling of works, off-site
prefabrication would be adopted where practicable to shorten the construction
period as well as reducing the duration for which the landscape character
area would be affected. The
implementation of proper water quality control would reduce the potential of
unwanted debris/waste and untreated surface runoff being discharged into the sea. The residual impact during construction
phase would therefore reduce to ‘Slightly Adverse’. With
sensitive design and disposition of the pier structure to minimise
visual intrusion to the VSRs, the improved pier structure would have
higher compatibility with the surrounding landscape. The residual impact at
Day 1 and Year 10 operations would therefore become ‘Slightly Adverse’. |
|||||||
LCA2 |
Coastal Upland and
Hillside Landscape of Pan Pui Teng |
Moderately Adverse |
Insubstantial |
CM1, CM3 |
Slightly |
Insubstantial |
Insubstantial |
Description: The
construction area for the Project has been optimised to reduce the extent of
associated landscape impacts. In addition to careful scheduling of works,
off-site prefabrication would be adopted where practicable to shorten the
construction period as well as reducing the duration for which the landscape
character area would be affected. The residual
impact during construction phase would therefore reduce to ‘Slightly
Adverse’. This LCA
would not be affected by the Project during operational phase, and mitigation
measures are not required. |
|||||||
LCA3 |
Settled Valley Landscape of Lai Chi Wo |
Insubstantial |
Insubstantial |
N/A |
Insubstantial |
Insubstantial |
Insubstantial |
Description: This LCA would not be affected by the Project, and mitigation measures
are not required. |
|||||||
LCA4 |
Settled Valley Landscape of Siu Tan Valley |
Insubstantial |
Insubstantial |
N/A |
Insubstantial |
Insubstantial |
Insubstantial |
Description: This LCA would not be affected by the Project,
and mitigation measures are not required. |
9.10.4 Residual Impact on Visually Sensitive Receivers
9.10.4.1
The residual visual
impacts on VSRs with mitigation measures are assessed and summarised in Table 9.28.
Table 9.28 Summary of Impact Assessment on Visually Sensitive Receivers
VSR ID |
VSR Name |
Significant Threshold (Unmitigated) |
Recommended Mitigation Measures |
Significant Threshold (Mitigated) |
|||
Construction |
Operation |
Construction |
Operation Day 1 |
Operation Year 10 |
|||
VSR1 |
Users at Affinity Pavilion |
Slightly Adverse |
Slightly Beneficial |
CM1, CM2, CM3, CM4, CM5, OM1 |
Insubstantial |
Moderately Beneficial |
Moderately Beneficial |
Description: The construction area
for the Project has been optimised to reduce the extent of associated visual
impacts. The installation of
site hoarding along the boundary of the works area where practicable would
block the view onto the construction activities. The design of the hoarding should be
compatible with its surroundings where practicable, and should be constructed
of non-reflective and suitable colours. The implementation of
proper water quality control would reduce the potential of unwanted
debris/waste and untreated surface runoff being discharged into the sea. Furthermore, through careful scheduling
of works, the construction period could be optimised to reduce the duration
for which the visually sensitive receivers would be affected. The residual impact during construction
phase would therefore reduce to ‘Insubstantial’.
The improved pier structure has also been sensitively designed in a manner
compatible to the existing structure. The residual impact at Day 1 and Year 10 operations would
therefore become ‘Moderately Beneficial’. |
|||||||
VSR2 |
Users at Lai Chi Wo Viewing Point |
Slightly Adverse |
Slightly Beneficial |
CM1, CM2, CM3, CM5, OM1 |
Insubstantial |
Moderately Beneficial |
Moderately Beneficial |
Description: The
construction area for the Project has been optimised to reduce the extent of
associated visual impacts. The
installation of site hoarding along the boundary of the works area where
practicable would block the view onto the construction activities. The design
of the hoarding should be compatible with its surroundings where practicable,
and should be constructed of non-reflective and suitable colours. Furthermore, through careful scheduling of works,
the construction period could be optimised to reduce the duration for which
the visually sensitive receivers would be affected. The residual impact during construction
phase would therefore reduce to ‘Insubstantial’.
The improved pier structure has also been sensitively designed in a manner
compatible to the existing structure. The residual impact at Day 1 and Year 10 operations would
therefore become ‘Moderately Beneficial’. |
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VSR3 |
Hikers along Hiking Trail near Kau Ma
Shek |
Slightly Adverse |
Slightly Beneficial |
CM1, CM2, CM3, CM5, OM1 |
Insubstantial |
Moderately Beneficial |
Moderately Beneficial |
Description: The
construction area for the Project has been optimised to reduce the extent of
associated visual impacts. The
installation of site hoarding along the boundary of the works area where
practicable would block the view onto the construction activities. The design
of the hoarding should be compatible with its surroundings where practicable,
and should be constructed of non-reflective and suitable colours. Furthermore, through careful scheduling of works,
the construction period could be optimised to reduce the duration for which
the visually sensitive receivers would be affected. The residual impact during construction
phase would therefore reduce to ‘Insubstantial’.
The improved pier structure has also been sensitively designed in a manner
compatible to the existing structure. The residual impact at Day 1 and Year 10 operations would
therefore become ‘Moderately Beneficial’. |
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VSR4 |
Marine Travellers in Crooked Harbour |
Moderately Adverse |
Moderately Beneficial |
CM1, CM2, CM3, CM4, CM5, OM1 |
Slightly |
Moderately Beneficial |
Moderately Beneficial |
Description: The construction area
for the Project has been optimised to reduce the extent of associated visual
impacts. The installation of
site hoarding along the boundary of the works area where practicable would
block the view onto the construction activities. The design of the hoarding
should be compatible with its surroundings where practicable, and should be
constructed of non-reflective and suitable colours.
Furthermore, through careful scheduling of works, the construction period
could be optimised to reduce the duration for which the visually sensitive
receivers would be affected. Precautionary measures should also be adopted to
avoid untreated surface runoff from
directly discharging into the sea, particularly during rainy condition, and
any pollutants / wastes / debris from entering the sea that would cause
adverse visual impact when they become visible on the sea surface. The
residual impact during construction phase would therefore reduce to
‘Insubstantial’. The improved pier structure has also been sensitively designed in a
manner compatible to the existing structure. The residual impact at Day 1 and Year 10 operations would
therefore become ‘Moderately Beneficial’. |
9.11 Broad Tree Survey Results and Preservation Strategy
9.11.1.1 Broad tree surveys were conducted on 5 August 2018, 20 September 2018 and 3 May 2019 to identify the tree(s) which may be affected by the Project. The existing pier structure and the proposed pier improvement works, including the area for widening of pier catwalk and the extended pier head are located on the sea, where no landscaping features were found. Only 5 nos. of common trees (i.e. 4 nos. of Camphor Tree (Cinnamomum camphora), 1 no. of Lance-leaved Sterculia (Sterculia lanceolata) were identified within the boundary of Plover Cove Country Park and within the tree survey extent of 2m from the Project boundary. These trees were generally in mature size and fair health condition. Neither “Important Trees”, OVTs nor stonewall trees were identified within the surveyed area. The location of the surveyed trees and the tree survey results are detailed in Appendix 9.1.
9.11.1.2 For the Project, all associated construction activities will be limited to the site boundary and will not encroach upon the existing footpath, which lies under the tree crown, outside the site boundary. In addition, the pier improvement works mainly focuses on the pier structure in the sea and no works will be carried out on the existing footpath connecting the pier to Lai Chi Wo village and So Lo Pan. In addition, all trees are anticipated to be retained after the Project. Therefore, direct impact on trees due to the Project is not anticipated.
9.11.1.3 Though insurmountable impacts on trees are not anticipated for the Project, every effort should be exercised to preserve the existing trees on site and in the vicinity from tree preservation point of view. The following tree preservation and protection practices are recommended during the construction of the Project:
· No fencing, services, or signs other than the identification labels or markings shall be attached to any part of the trees;
· No trees shall be used as anchorages for ropes or chains used in guying or pulling or for equipment used for removing stumps, roots or other trees, or for any other purpose;
· No soil, materials, equipment or machinery shall be stockpiled or stored in country park/geopark (unless approval or written consent from relevant authorities are obtained);
· No site offices, workshops, canteens, containers or similar structures shall be installed within the country park/geopark (unless approval or written consent from relevant authorities are obtained). The engineer’s accommodation is anticipated to be erected on the temporary working platform/barge on sea during construction;
· Petrol, oil, bitumen, creosote, cement and other materials likely to be injurious to the trees shall be kept away from the trees, and any accidental spills of these materials shall be cleaned up immediately;
· No concrete mixing, gas tank filling, paintbrush and tool cleaning, or equipment maintenance shall be carried out in country park/geopark; and
· All building debris and chemical wastes shall be hauled away for proper disposal, and in any circumstances shall not be burned or buried on the Site or be disposed of by pouring them on the soil within the Site.
9.12 Environmental Monitoring and Audit
9.12.1.1
The design,
implementation and maintenance of landscape and visual mitigation measures
should be checked to ensure that they are fully realised, thus environmental
monitoring and audit (EM&A) for these mitigation measures should be
undertaken. Design measures shall be incorporated at the detailed design stage.
Implementation of the mitigation measures such as tree protection and
preservation shall be monitored through site audit programme during
construction phase. (Details refer to EM&A Manual and Chapter 12 of this
report).
9.13.1 Landscape Planning Framework
9.13.1.1 By reviewing the planning framework, the Project demonstrates a compatibility to the existing planning intentions within and in the vicinity of the Project. In the absence of vehicular access to Lai Chi Wo, implementation of the Project is essential for the provision of necessary cum safe access to residents, tourists and other personnel commuting back and forth Lai Chi Wo and other city districts, nevertheless avoids substantial infrastructural works in the area of conservation importance, and maintains the area remote, tranquil, harmonious and pleasant with rural landscape character area of rich landscape resources.
9.13.2 Landscape Impact
Construction Phase
9.13.2.1 During the construction of the Project, moderately adverse impact is anticipated for the inshore water of Crooked Harbour near Lai Chi Wo (LR1) and inshore water landscape of Crooked Harbour (LCA1) without the provision of mitigation measures. By adopting mitigation measures such as the minimisation of construction area, minimisation of construction period and water quality control measures, the landscape impacts on LR1 and LCA1 are anticipated to be slightly adverse and considered acceptable with mitigation measures.
9.13.2.2 For the rocky shore along the coastline of Crooked Harbour (LR3) and the existing Lai Chi Wo Pier (LR8), minimisation of construction area and construction period could alleviate the landscape impact from slightly adverse to insubstantial.
9.13.2.3 For other landscape resources and landscape character areas, landscape impacts are assessed to be insubstantial without mitigation measures. Hence, mitigation measures are not necessary for these LRs and LCAs.
Operational Phase
9.13.2.4 During the operation of the Project, moderately adverse impact is anticipated for the inshore water of Crooked Harbour near Lai Chi Wo (LR1) and Inshore Water Landscape of Crooked Harbour (LCA1). By adopting mitigation measures such as minimising the footprint and number of piles required for the pier, landscape impact is mitigated to be slightly adverse on Day 1 and Year 10 of the operational phase and considered acceptable with mitigation measures.
9.13.2.5 Likewise, for the existing Lai Chi Wo Pier (LR8), minimisation of footprint and number of piles required for the pier could alleviate the landscape impact from slightly beneficial to moderately beneficial on Day 1 and Year 10 of the operational phase.
9.13.2.6 For other landscape resources and landscape character areas, landscape impacts are assessed to be insubstantial without mitigation measures. Hence, mitigation measures are not necessary for these LRs and LCAs.
9.13.3 Visual Impact
9.13.3.1
During the construction of the Project, visual
impacts on VSRs are anticipated to be in the range of slightly adverse to
moderately adverse without the provision of mitigation measures. Mitigation
measures such as minimisation of construction area, provision of site hoarding,
minimisation of construction period by use of prefabricated building elements
and provision of suitable colour scheme of construction machines and plants,
have been considered. With the provision of mitigation measures, the visual
impacts on VSRs are mitigated to slightly adverse to insubstantial and
considered acceptable with mitigation measures.
9.13.3.2
During the operation of the Project, visual impacts on VSRs are
anticipated to be in the range of slightly beneficial to moderately beneficial,
when comparing the visual appearance of the existing
pier in poor condition and the improved pier in the photomontages. The visual
appears of the pier will be further enhanced by the colour and textural
treatment of built structures and furniture and therefore the visual impact
could be enhanced to be moderately beneficial on Day 1 and Year 10 of the operational
phase.