7.1.1 This section assesses the potential landscape and visual impacts arising from the proposed works in Siu Ho Wan and Pui O. The proposed works in Siu Ho Wan include extension of the Siu Ho Wan Water Treatment Works (SHW WTW Extension) within its existing boundary, and construction of a Raw Water Booster Pumping Station. The proposed works in Pui O include demolition and reconstruction of the existing Pui O Raw Water Pumping Station within its existing boundary, uprating of capacity of the Pui O No. 2 Raw Water Pumping Station, which involves internal modifications only, and laying of the proposed raw water mains along South Lantau Road.
Siu Ho Wan Site
7.2.1
The proposed SHW WTW Extension comprises of the
following structures. For better illustration, Figure 7.1a shows the location
of the structures:
The proposed SHW WTW Extension comprises of the
following structures. For better illustration, Figure 7.1a shows the location
of the structures:
·
At-grade/below ground
construction
·
·
Nearly at-grade construction
proposed sludge clarifier thickeners and sludge
thickeners
–
flocculation tanks,
sedimentation basins, intermediate ozone contact tanks and filters of
approximately 67m x 63m x 1.5m (length x width x height)
–
proposed lime saturators
Above ground construction
a one-storey laboratory of approximately 52m x 8m x
4.5m (length x width x height)
– proposed
sludge clarifier thickeners and sludge thickeners of approximately 41.6m x
19.7m x 1.25m and 26m x 8m x 1m respectively (length x width x height of above
ground structure)
– flocculation
tanks, sedimentation basins, intermediate ozone contact tanks and filters of
approximately 67m x 63m x 1.5m (length x width x height)
·
Above ground construction
– a one-storey
laboratory of approximately 52m x 8m x 4.5 to 5.5m (length x width x height)
– two ozone generation buildings above tanks of approximately 20m x 16m x 7m and 27m x 16m x 7m (length x width x height) respectively
– an oxygen generation plant on top of the existing (at-grade structure) contact tank of approximately 14m x 13.5m x 6m (length x width x height)
–
proposed lime saturators of approximately 7m x 28x
4m (length x width x height)
–
a dangerous goods store of approximately 20m x 10m
x 4m (length x
width x height)
7.2.2 In Siu Ho Wan site, the proposed Raw Water Booster Pumping Station involves construction of a one-storey structure of approximately 45m x 20m x 9m (length x width x height) with its access connecting Cheung Tung Road when the Road is the service lane of the North Lantau Highway.
7.2.3 The proposed construction of SHW WTW Extension and Raw Water Booster Pumping Station would be considered as the source of potential impacts at the construction and operation stages. General site activities below would also be considered as the source of impacts:
· Site Clearance and site formation
· Access Road Construction to the proposed Raw Water Booster Pumping Station
· Material/ Waste storage Area
· Pipeline laying
Pui O Site
7.2.4 Existing Pui O Raw Water Pumping Station sized 30.5m x 20m x 8m (length x width x height) would be demolished and reconstructed within its existing boundary, in similar size of approximately 32m x 16.5m x 8m (length x width x height). Located in its opposite location across South Lantau Road is the Pui O No. 2 Raw Water Pumping Station which would be carried out upgrading of capacity and involves solely internal modification works. In addition, the proposed 1200mm diameter raw water mains would be laid underground along South Lantau Road, where excavation work is involved.
7.2.5 The proposed re-construction of Pui O Raw Water Pumping Station would be considered as the source of potential impacts at the construction and operation stages. The proposed laying of raw water mains would be considered as another source at construction stage only as it would be laid underground at operation stage. General site activities below would also be considered as the source of impacts:
· Demolition of the existing Pui O Raw Water Pumping Station
· Site form work, concreting, brickwork and finishing for the re-construction of Pui O Raw Water Pumping Station
· Excavation works and pipeline laying of raw water mains
7.3.1 A review of the existing and planned development framework of the proposed works and surrounding area are undertaken as input to the Landscape and Visual Impact Assessment (LVIA). The aim is to identify any issues within the neighbouring planned land uses, and therefore to identify potential VSRs, and to ensure a high compatibility between the proposed Project and the surroundings.
7.3.2
Reference is made to the Siu Ho Wan
Layout Plan – Lantau Island (No. L/I – SHW/1), Outline Zoning Plan of South
Lantau Coast (No. S/SLC/132),
and Site Layout Plan of Siu Ho Wan Raw Water Booster Pumping Station from Water
Supplies Department (No. SK 20055/2).
7.3.3 According to the Siu Ho Wan Layout Plan No. L/1-SHW/1, the sites for the proposed extension of Siu Ho Wan Water Treatment Works (SHW WTW Extension) falls within an area zoned “Other Specified Uses” (“OU”) annotated (Water Treatment Work) while the subject site for the proposed SHW Raw Water Booster Pumping Station lies within an area zoned “OU” annotated “Possible Raw Water Pumping Station” on the Plan. The proposed alternative site for the Booster Pumping Station is zoned “GB” on the North-east Lantau Outline Development Plan No. D/I-NEL/1. The proposed extension of the water treatment works in Siu Ho Wan is considered compatible with the adjacent land uses which are mainly infrastructure facilities.
7.3.4 The existing Pui O Raw Water Pumping Station falls within an area partly zoned “Village Type Development” and partly zoned “Green Belt” on the South Lantau Coast Outline Zoning Plan No. S/SLC/13. The existing Pui O No. 2 Raw Water Pumping Station falls within an area mainly zoned "Other Specified Uses" ("OU") annotated "Waterworks Pumping Station" and partly zoned “Coastal Protection Area” (“CPA”) on the South Lantau Coast OZP No. S/SLC/13. It is noted that the proposed uprating of the Pui O No. 2 Raw Water Pumping Station would only involve installation of equipment in the reserved pump bays within the north side of the station, and hence no material change to its existing use of land is envisaged at this stage.
7.4.1 The methodology for undertaking the Landscape and Visual Impact Assessment (LVIA) takes reference from Annexes 3, 10 and 18 of EIAO–TM, and in accordance with EIAO Guidance Note No. 8/2002.
7.4.2 Other landscape documents relevant for the preparation of the LVIA includes:
· Government General Regulation 740 – restrictions on the preservation and felling of trees in Hong Kong
· The Forests and Countryside Ordinance (Cap96) – prohibits felling, cutting, burning or destroying of trees and growing plants in forests and plantations on government land. Its subsidiary regulations prohibit the picking, felling or possession of listed rare and protected plant species
· The Forestry Regulations – made under Section 3 of the Forests and Countryside Ordinance (Cap. 96), defined the list of protected species in Hong Kong
· ETWB TCW No. 2/2004 – sets out the government departmental responsibilities for maintenance of vegetation and hard landscape features
· WBTC No. 14/2002 – defines and outlines the management and maintenance responsibilities for natural vegetation and landscape works, and the authorities for tree preservation and felling
· WBTC No. 25/93 – Control of Visual Impact of slopes, outlines the design principles recommended to be used in designing man-made slopes for Public Works projects in order to reduce their adverse visual impact
· WBTC 17/2000 – Improvement to appearance of slopes, outlines the principles and procedures recommended for all departments involved in new slope works and maintenance of existing slopes for improving aesthetic and environmental impact of slope works
· WBTC No. 7/2002 Tree planting in Public Works, affirms the advocated policy on tree planting which adopts a flexible and balanced approach in the planning and design of public works
· GEO publication No. 1/2000 ‘Technical Guidelines on landscape treatment and Bio-engineering for Man-Made Slopes and Retaining Walls’
· WSD publication in 2003 ‘Guidance Works for Landscape Works on WSD Slopes’
7.5.1 This Project is a designated project (DP) under the EIAO and the methodology adopted for the Project conforms to the requirements of the EIAO. The methodology consists of the following tasks:
· Baseline study of landscape and visual resources
· Landscape impact assessment
· Visual impact assessment
· Recommendation on landscape and visual mitigation measures
· Identification of residual impacts
Baseline Study of Landscape
and Visual Resources
7.5.2
A 500m boundary to the Project area
forms the study area for landscape and visual impact assessments while the limits of the
visual impact studies are defined by the Visual Envelope (VE) from the site..
The baseline study identified and examined the existing landscape and
visual resources within the study area. An aerial photograph is
used to show the overall study area and labelled to indicate the Landscape
Character Areas (LCAs), while photographs would be given to demonstrate the
Landscape Resources (LRs).
7.5.3 Field and desk surveys would identify the landscape character of the study area. The character of the landscape is derived from its physical components related to its visual amenity, cultural association and heritage value. Elements to be considered include:
·
Land
use
·
Public
use of land
·
Extent
of vegetation
·
Age
of landscape
·
Cultural,
heritage and religious elements
·
Scale
and type of buildings
·
Pattern
of settlement
·
Location
and topography
·
Extent
of natural vs. manmade
7.5.4 Landscape Resources (LRs) considered the following elements:
·
Natural
and secondary woodland
·
Amenity
planting
·
Scrubland
and grassland
·
Natural
topography
·
Significant
planning designation, e.g. Country Park, Green Belt
·
Heritage
or cultural features
7.5.5 The baseline study describes the LCAs by identifying broadly homogenous Landscape Character Areas (LCAs) of a similar character and LRs by identifying physical and cultural resources. The sensitivity of LCAs and LRs are rated low, medium or high depending on the quality and rarity of the landscape elements present, and also on its ability to accommodate change and its importance at a local, district, or regional level:
|
Sensitivity |
Definition |
|
High |
Important components of
landscape of particularly distinctive character susceptible to relatively
small changes |
|
Medium |
A landscape of moderately
valued characteristics reasonably tolerant of change |
|
Low |
A relatively unimportant
landscape, the nature of which is largely tolerant to change |
7.5.6 The magnitude of change of LCAs and LRs would be determined by the following factors:
·
Compatibility
of the Project with the surrounding landscape
·
Duration
of impacts under construction and operation phases
·
Scale
of development
·
Reversibility
of change
7.5.7 The impacts are considered systematically as a product of the sensitivity of the LCAs/ LRs and the magnitude of change of the impacts to the landscape. The magnitude of the change in the landscape is rated High, Moderate, Low and Negligible as follows:
|
Magnitude of
Change |
Definition |
|
High |
Notable permanent change in the
landscape characteristics over an extensive area ranging to very intensive
changes over a more limited area |
|
Moderate |
Moderate changes in a localised area |
|
Low |
Virtually imperceptible change or
temporary change |
|
Negligible |
Virtually no changes in the area |
Visual
Resources
Zone
of Visual Influence/ Visual Envelope
7.5.8 Visual resources considered as typical viewpoints, location and direction of views towards the proposed works. A Zone of Visual Influence/ Visual Envelope is established which approximately defined the extent of visual influence of the proposed works, and therefore, of the potential visual impacts. Definition of the extent of the visual envelope is based on a desktop study and site investigation.
Visually Sensitive Receivers
(VSRs)
7.5.9 Visually Sensitive Receivers (VSRs) who would be presented as typical viewpoints and key views, and likely to be affected by the proposed works, are identified within the visual envelope. VSRs are defined as individuals or groups of whom are sensitive to changes in the visual environment. Residents, users of open space/recreational facilities, road users (private and public transport users), schools, tourists and people working within the visual envelope shall be considered as VSRs.
7.5.10 Each type of VSR is assigned with a number. Description of the view from each VSR towards the proposed works in terms of location of VSRs, type of VSRs, and direction of view towards the proposed works, are given and assigned in accordance with the relative tolerance to change of the VSRs
7.5.11 The sensitivity of VSRs are determined by considering:
·
Value
and quality of existing views, e.g. urban high-rise, natural hills, sea view
·
Presence
of alternative views
·
Type
and estimated number of receiver population
·
Duration
or frequency of view
·
Degree
of visibility of the proposed Project, e.g. no view, glimpse, partial view,
vista, open view, and panorama view)
7.5.12 The ratings of sensitivity are High, Medium and Low, and illustrated as follows:
|
Sensitivity |
Definition |
|
High |
Important views from e.g. residential
areas, open space, etc. with open views over the sea or of natural areas.
These views would be of particularly distinctive character susceptible to
relatively small changes |
|
Medium |
Views from |
|
Low |
Relatively unimportant views from
viewers whom are largely tolerant to change |
7.5.13 Both present and future VSRs, i.e. from planned developments, would be considered. The survey information shall be tabulated in a table and summarised in the text. Drawings to show the location of VSRs and photographs showing typical views would be included.
Landscape Impact Assessment
7.5.14 The assessment of the potential landscape impacts would result from:
·
Identification
of the source of impact, the magnitude, that would be generated during
construction and operation of the Project; and
·
Identification
of principal impacts, primarily in consideration of the degree of change to the
baseline conditions.
7.5.15 The following factors are considered to the judgement of the overall landscape impacts:
·
The
landscape character and its quality
·
The
sensitivity of the landscape in accommodating change
·
Source,
nature and magnitude of potential impacts
·
Construction
and operation phases impacts
·
Degree
of change caused by each of the impacts to the existing LCAs/LRs
·
Significance
of this change in the local and regional context and in relation to other
developments
·
Cumulative
effects on the landscape of this and neighbouring projects
7.5.16 The overall impact likely to occur to LCAs and LRs, is derived from the magnitude of change which the Project would cause to the existing landscape and ability to tolerate the change. A matrix shall be used to demonstrate the overall impact:
|
|
|
Sensitivity
/ Quality of the landscape |
||
|
|
|
Low |
Medium |
High |
|
Magnitude of Change |
High |
Moderate
Impact |
Moderate / Significant
Impact |
Significant
Impact |
|
Moderate |
Slight /
Moderate Impact |
Moderate
Impact |
Moderate / Significant
Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight /
Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
7.5.17 Furthermore the impacts need to be identified as Adverse, Beneficial or Neutral, which indicate the impact on the existing landscape context as follows:
|
Identification
of the Landscape Impact |
Definition |
|
Adverse |
An impact which will be
detrimental to the existing landscape context |
|
Beneficial |
An impact which will improve
the existing landscape context |
|
Neutral |
An impact which will alter
the existing landscape context but not to improve or destroy it |
7.5.18 The overall impact of the each LCA and LR is termed the Significance Threshold, and shall be considered as follows:
|
Impacts |
|
|
Significant |
Adverse/beneficial impact where the
proposal would cause significant deterioration or improvement in existing
landscape quality |
|
Moderate |
Adverse/beneficial impact where the
proposal would cause a noticeable deterioration or improvement in existing
landscape quality |
|
Slight |
Adverse/beneficial impact where the
proposal would cause a barely perceptible deterioration or improvement in the
existing landscape quality |
|
Negligible |
No discernible change in the existing
landscape quality |
|
Neutral |
A change which is neither adverse or
beneficial |
Visual Impact Assessment
7.5.19 The baseline survey forms the basis of the VIA, and shall result from:
·
Identification
of the source of visual impacts, their magnitude of change and sensitivity of
the receivers, that would be generated during construction and operation of the
Project, and;
·
Identification
of principal visual impacts, primarily in consideration of the degree of change
to the baseline conditions
7.5.20 The magnitude of change for visual impact assessment would be determined by the following factors:
·
Compatibility
of the proposed Project with the surrounding landscape
·
Duration
of impacts during construction and operation stages
·
Scale
of the proposed project
·
Reversibility
of change
·
Approximate
viewing distance
·
Potential
blockage of the view
7.5.21 The impacts are considered systematically as a product of the sensitivity of the VSRs and the magnitude of change of the impacts to the visual quality. The magnitude of the change to the views is rated High, Moderate, Low and Negligible as follows:
|
Magnitude of
Change |
Definition |
|
High |
Majority of viewers affected or major
changes in view |
|
Moderate |
Many viewers affected or moderate
changes in view |
|
Low |
Few viewers affected or minor changes
in view |
|
Negligible |
Very few or no viewers affected or
visually no changes in view |
7.5.22 The overall impact likely to occur to VSRs, is derived from the magnitude of change which the Project would cause to the existing visual context and its ability to tolerate the change. A matrix shall be used to demonstrate the overall impact:
|
|
|
Sensitivity /
Quality of the Visual Receivers |
||
|
|
|
Low |
Medium |
High |
|
Magnitude of Change |
High |
Moderate Impact |
Moderate / Significant
Impact |
Significant
Impact |
|
Moderate |
Slight /
Moderate Impact |
Moderate
Impact |
Moderate / Significant
Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight /
Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
7.5.23 Furthermore the impacts need to be identified as Adverse, Beneficial or Neutral, which indicate the impact on the existing visual context as follows:
|
Identification
of the Visual Impact |
Definition |
|
Adverse |
An impact which will be
detrimental to the existing views |
|
Beneficial |
An impact which will improve
the existing views |
|
Neutral |
An impact which will alter
the existing views but not to improve or destroy it |
7.5.24 The overall impact of the VIA is termed the Significance Threshold, and shall be considered as follows:
|
Impacts |
|
|
Significant |
Adverse/beneficial impact where the
proposal would cause significant deterioration or improvement in existing
views |
|
Moderate |
Adverse/beneficial impact where the
proposal would cause a noticeable deterioration or improvement in existing
views |
|
Slight |
Adverse/beneficial impact where the
proposal would cause a barely perceptible deterioration or improvement in the
existing views |
|
Negligible |
No discernible change in the existing
views |
Recommendation of Landscape
and Visual Impact Mitigation Measures
7.5.25 After assessing the landscape and visual impacts of the proposed works which likely to occur and how significant these impacts would be, recommendations would then be formulated to reduce or alleviate these impacts both during the construction and operation stages. Identified impacts would be described and suggested with mitigation measures.
7.5.26 This is a further assessment to establish residual impacts that persist after the implementation of mitigation measures.
7.5.27 The principles for undertaking the residual impact assessment are similar to the landscape and visual impact assessments. Significance threshold for the residual impacts would be established to consider the impacts against the successfulness of the recommended mitigation measures to alleviate such impacts.
7.5.28 The residual impacts after mitigation measures would also be evaluated and classified into five levels of significance in accordance with Annex 10: Criteria for evaluating visual and landscape impact, and impact on sites of cultural heritage of the EIAO-TM, as summarized below:
·
The
impact is beneficial if the project will complement the landscape and
visual character of its setting, will follow the relevant planning objectives
and will improve the overall and visual quality of the study area
·
The
impact is 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
·
The
impact is 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
·
The
impact is unacceptable if the adverse effects are considered too
excessive and are unable to mitigate practically
·
The
impact is 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
Siu Ho Wan Site
7.6.1 Figures 7.3a to 7.3b illustrate the photographic record of Siu Ho Wan site. A description of each LCA is provided as follows:
·
LCA
1 – Major Transport Corridor, which represents vehicular roads such as North
Lantau Highway, Airport Railway, Cheung Tung Road, Sham Shui Kok Drive and
Discovery Bay Tunnel Road are included as well.
·
LCA
2 – Amenity Area and Natural Terrain, represents all vegetated characters,
including roadside amenity areas along North Lantau Highway, Airport Express
and MTR, and Cheung Tung Road and amenity areas within Public Utility Area. It
also contains woodlands, scrubland and fresh water body, which represent the
major character of the area.
·
LCA
3 – Coastal Zone, represents seawater body and waterfront character such as
breakwaters and seashore at the west of Airport Railway.
·
LCA
4 – Government and Public Utility, represents all government institutions and
public utilities such as Siu Ho Wan Sewage Treatment Works, Siu Ho Wan Water
Treatment Works, The Long Win Bus Co. Ltd., City Bus Ltd. Siu Ho Wan Bus Depot,
Siu Ho Wan Vehicle Pound, Vehicle Examination Centre and Weigh Station.
7.6.2 Figure 7.1a illustrates the Landscape Character Areas (LCAs) of Siu Ho Wan site. With the description of each LCA above, the sensitivity and the magnitude of change for each LCA is summarized as follows:
|
No. of LCA |
Name of LCA |
Sensitivity |
Magnitude of Change (under Construction/ Operation) |
Relevant Table no. showing Significance Threshold |
|
LCA 1 |
Major Transport
Corridor |
Low |
Negligible* |
7.4 |
|
LCA 2 |
Amenity
Area and Natural Terrain |
Medium |
Negligible* |
7.5 |
|
LCA 3 |
Coastal Zone |
High |
Negligible* |
7.6 |
|
LCA 4 |
Government and
Public Utility |
Low |
Negligible* |
7.7 |
* The Magnitude of Change for LCA 1 to LCA 3
under both construction and operation stages are considered as Negligible
as the proposed construction would not touch or touch a very small to
insignificant portion of area to the LCAs. For LCA 4, the nature of the
proposed Project is as same as the existing character so that Negligible
Magnitude of Change is predicted.
7.6.3 Figure 7.2a illustrates the Landscape Resources (LRs) of Siu Ho Wan site. Name of the LRs is listed and a description of each LR is summarized in Table 7.1 as follows:
LR 1 – Scrubland/ Woodland on Natural Terrain
LR 2 – Grassland/ Rock Slope on Natural Terrain
LR 3 – Vegetation within Amenity Area
LR 4 – Vegetation within Government/ Public Utility Area
LR 5 – Freshwater Body (Natural/Artificial Channel)
LR 6 – Seawater Body
7.6.4 LRs findings from the baseline study is summarized as follows:
Table 7.1 Illustration of the Sensitivity of LRs in Siu Ho Wan
|
LR |
Area (m2) |
Vegetation
Feature |
Dominant Tree Species |
Function |
Amenity
Value |
Sensitivity |
Affected
Area (m2) |
|
LR 1 |
526,900 |
Scrubland/ Woodland on Natural Terrain |
Acacia confusa, Ficus microcarpa, Sapium discolor, Sapium
sebiferum, Mallotus paniculatus, Litsea rotundifolia, Celtis sinensis,
Sterculia lanceolata, Casuarina equisetifolia, Musa paradisiaca, Macaranga
tanarius, and other native tree species, etc. |
As habitat purpose |
High |
High |
0 |
|
LR 2 |
98,300 |
Grassland/ Rock slope on Natural Terrain |
Acacia confusa, and
Litsea rotundifolia |
As habitat purpose |
Medium |
Medium |
0 |
|
LR 3 |
102,800 |
Vegetation within Amenity Area |
Casuarina equisetifolia |
Ornamental & screening purpose |
Medium |
Medium |
400 |
|
LR 4 |
69,680 |
Vegetation within Government/ Public Utility Area |
- |
Grassland/ Wasteland |
Low |
Low |
10,000 |
|
LR 5 |
79,480 |
Freshwater Body (Natural/ Artificial Channel) |
- |
Riparian habitat and surface runoff |
High |
High |
0 |
|
LR 6 |
103,470 |
Seawater Body |
- |
Habitat purpose |
High |
High |
0 |
7.6.5 Refer to Table 7.1 and Figure 7.5a1, two LRs – LR 3 and LR 4, would be directly affected by the proposed development. A total area of approximately 400 m2 vegetated amenity area – LR 3, would be potentially affected by the proposed construction of SHW Raw Water Booster Pumping Station. Existing shrubs and groundcovers would be removed to form an approximately 6m wide vehicular access. The rest of the area would be reinstated during the operation stage. Together with the relatively small scale of the development, the Magnitude of Change of LR 3 would be Low at both construction and operation stages. While LR 4 has approximately 10,000m2 area directly affected, where it is grassland/wasteland within the existing Siu Ho Wan Water Treatment Works boundary. The existing grassland/wasteland would be permanently removed for the construction of SHW WTW Extension. The scale of the development in LR 4 is medium, the Magnitude of Change would therefore be Moderate at both construction and operation stages. A summary of the Magnitude of Change of each LR in Siu Ho Wan is listed below:
|
No. of LR |
Name of LR |
Sensitivity |
Magnitude of Change (under Construction/ Operation) |
Relevant Table no. showing Significance Threshold |
|
LR 1 |
Scrubland/
Woodland on Natural Terrain |
High |
Negligible/ Negligible |
7.8a |
|
LR 2 |
Grassland/ Rock
slope on Natural Terrain |
Medium |
Negligible/ Negligible |
7.8b |
|
LR 3 |
Vegetation within
Amenity Area |
Medium |
Low/ Low |
7.8c |
|
LR 4 |
Vegetation within
Government/ Public Utility Area |
Low |
Moderate/ Moderate |
7.8d |
|
LR 5 |
Freshwater Body
(Natural/ Artificial Channel) |
High |
Negligible/ Negligible |
7.8e |
|
LR 6 |
Seawater Body |
High |
Negligible/ Negligible |
7.8f |
7.6.6
Figure 7.4a illustrates the Visual
Envelope, Visually Sensitive Receivers (VSRs) and Key Views (KVs) in Siu Ho Wan
site. By standing at the proposed
site during field survey, the extent of the boundary would be checked and according to the closest
ridgeline, the
Visual Envelope (VE) is formed. as follows:Within the VE in Siu Ho Wan, the area is visually characterized as a major transport corridor
to Tung Chung and the airport, and a cluster of public utilities with associated structures, such as SHW Sewage Treatment Works, SHW Water Treatment Works, several bus depots, Police Vehicle Pound,
Vehicle Examination Centre and Weigh Station, Refuse Transfer Station and
Discovery Bay Tunnel Administrative Building. The transport corridor and the public utilities cluster
sandwich between natural
hillside at the east to south and open sea at the northwest. A total of 12 VSRs are
identified within the VE, which are described
in Table 7.2 below.
The proposed two ozone generation
buildings, the
oxygen generation plant among SHW WTW Extension, and Raw Water Booster Pumping Station would be
viewed by the VSRs. Other proposed structures as mentioned under
Section 7.2
Project Description would be hardly visible to the viewers.
Table 7.2 VSRs in Siu Ho Wan
|
VSR |
Location
& Name of VSR* |
Type of
viewer |
Direction
of view towards the proposed Project |
|
VSR 1 |
Users
of Airport Railway |
Drivers, passengers |
Southeast, east and northeast |
|
VSR 2 |
Users
of North Lantau Highway (NLH) |
Drivers, passengers |
Southeast, east and northeast |
|
VSR 3 |
Users
of Cheung Tung Road |
Drivers, passengers who work in nearby working areas |
Southeast, east and northeast |
|
VSR 4 |
Users
of Sham Shui Kok Drive |
Drivers |
Southeast |
|
VSR 5 |
Users
who work in SHW Bus Depot, SHW Vehicle Pound, Vehicle Examination Centre and
Weigh Station |
Working staff |
South |
|
VSR 6 |
Users
who work in Refuse Transfer Station |
Working staff |
South |
|
VSR 7 |
Users
who work in SHW Sewage Treatment Works |
Working staff |
North |
|
VSR 8 |
Users
of the Coastal Zone |
Working staff |
Southeast |
|
VSR 8a |
Users
of Discovery Bay Tunnel Road |
Drivers, passengers |
Northeast |
|
VSR 8b |
Users
of Discovery Bay Tunnel Administrative Building |
Working staff |
Northeast |
|
VSR 8c |
Users
who work in New Lantau Bus Co. SHW Bus Depot |
Working staff |
Northeast |
|
VSR 8d |
Future
users who will work in future SHW Sewage Treatment Works Area |
Working staff |
Northeast |
* Location of representative
VSRs would be referred to Figures 7.3a and 7.3b for better visualization.
Pui O Site
7.6.7 Figures 7.3c to 7.3e illustrate the photographic record of Pui O site. A description of each LCA is provided as follows:
·
LCA
1 – Major Transport Corridor, which represents
vehicular roads i.e. South Lantau Road. It is the solely major road connecting
Mui Wo from its north and Keung Shan Road from its south in Shek Pik.
·
LCA
2 – Amenity Area and Natural Terrain, represents all
vegetated characters, including roadside amenity areas along South Lantau Road
and amenity areas within Public Utility Area, i.e. the amenity area at Pui O
Raw Water Pumping Station and Pui O No.2 Raw Water Pumping Station. It also
contains Scrubland/ Woodland and grassland on Natural Terrain, natural stream
courses, mangrove/mudflat, and all landscape character such as hiking trail
within Lantau South Country Park, which represent the major character of the
area.
·
LCA
3 – Coastal Zone, represents seawater body in Pui O
Wan.
·
LCA
4 – Government and Public Utility, represents all
government institutions and public utilities such as Pui O Raw Water Pumping
Station and Pui O No.2 Raw Water Pumping Station.
·
LCA
5 – Village, represents all village settlements, they are: Lo Uk Tsuen, Pui O
San Wan Tsuen, Pui O Wai Tsuen, Pui O Au Lo Wai Tsuen, Ham Tin Sun Tsuen and
some scattered village houses at the northwest of South Lantau Road.
·
LCA
6 – School and Urban Recreation Area, represents the characters of educational
institutions and public recreation areas, they are: Bui O Public School and an
outdoor sports ground along Chi Ma Wan Road.
·
LCA
7 – Agricultural Flatland, represents both active and abandoned agricultural
fields. Some scrublands and grasslands would also be courted within this
character.
·
LCA
8 – Pui O Beach, which is an elongated sandy beach facing Pui O Wan at the far
southern end of the study area.
7.6.8 Figure 7.1b illustrates the Landscape Character Areas (LCAs) of Pui O site. With the description of each LCA above, the sensitivity and the magnitude of change for each LCA is summarized as follows:
|
No. of LCA |
Name of LCA |
Sensitivity |
Magnitude of Change (Under Construction/ Operation) |
Relevant Table no. showing Significance Threshold |
|
LCA 1 |
Major Transport
Corridor |
Low |
Negligible/ Negligible* |
7.9 |
|
LCA 2 |
Amenity Area and
Natural Terrain |
High |
Low/ Low* |
7.10 |
|
LCA 3 |
Coastal Zone |
High |
Negligible/ Negligible* |
7.11 |
|
LCA 4 |
Government and
Public Utility |
Low |
Negligible/ Negligible* |
7.12 |
|
LCA 5 |
Village |
Medium |
Negligible/ Negligible* |
7.13 |
|
LCA 6 |
School and Urban
Recreation Area |
High |
Negligible/ Negligible* |
7.14 |
|
LCA 7 |
Agricultural
Flatland |
High |
Low/ Negligible* |
7.15, 7.16 |
|
LCA 8 |
Pui O Beach |
High |
Negligible/ Negligible* |
7.17 |
* Magnitude
of Change for LCA 3, 5, 6 and 8 are Negligible under both construction
and operation as they are outside the site boundary of the proposed
construction.
For LCA 4, the proposed Pui O Raw Water Pumping Station would have the size more or less same as the existing one and the nature of the proposed works is as same as the existing character. Negligible change under both construction and operation stages is identified.
The Magnitude of
Change for LCA 1 and 7 is Negligible and Low respectively under
construction stage as the proposed laying of raw water mains is relatively
small in development scale. In addition, the proposed raw water mains would be
laid underground and the affected area would be reinstated back to original
condition. Though a portion of ground surface on 2.5m wide excavated trench would
be cleared without reinstatement for future maintenance, the affected area is
relatively small in scale. The Magnitude of Change for LCA 1 and 7 is therefore
identified as Negligible under operation stage.
For LCA 2, its
affected area would not be reinstated back when the ground surface on the
excavated trench would be cleared for future maintenance. Though the scale of
development is small, the change is irreversible. The Magnitude of Change for
LCA 2 is therefore identified as Low at both construction and operation
stages.
7.6.9 Figure 7.2b illustrates the Landscape Resources (LRs) of Pui O site. Name of the LRs is listed and a description of each LR is summarized in Table 7.2a as follows:
LR 1 – Scrubland/ Woodland on Natural Terrain
LR 2 – Grassland/ Scrubland
LR 3 – Active/ Abandoned Agriculture
LR 4 – Mangrove/ Mudflat
LR 5 – Natural Stream Course
LR 6 – Seawater Body
LR 7 – Beach/ Natural Coastline
LR 8 – Vegetated Amenity Area/ Urban Recreational Area
LR 9 – Hiking Trail
LR 10- Lantau South Country Park
Table 7.2a Illustration of the Sensitivity of LRs in Pui O
|
LR |
Area (m2) |
Vegetation Feature |
Dominant Tree Species |
Function |
Amenity Value |
Sensitivity |
Affected Area (m2) |
|
LR
1 |
2,550,300 |
Scrubland/
Woodland on Natural Terrain |
Aporusa
dioca, Ficus variolosa, Phyllanthus emblica, Acacia auriculifrormis, Acacia
confusa, Ficus microcarpa, Sapium discolor, Sapium sebiferum, Mallotus
paniculatus, Litsea rotundifolia, Celtis sinensis, Sterculia lanceolata, Musa
paradisiaca, Macaranga tanarius, Bambusa spp., Tetradium glabrifolum,
Clausena lansium, Cratoxylum lligustrinum and other native tree species, etc. |
As habitat
and recreational purpose |
High |
High |
5,320 |
|
LR
2 |
206,000 |
Grassland/ Scrubland |
Acacia
confusa, and Macaranga tanarius |
As habitat
purpose |
Medium |
Medium |
767 |
|
LR
3 |
275450 |
Active/
Abandoned Agriculture |
Sapium
sebiferum, Bambusa spp., Musa paradisiacal, Carica papaya, Mangifera indica,
Citrus grandis, Annona squamosa and Psidium guajava |
Habitat and
recreational purpose |
Medium |
Medium |
282 |
|
LR
4 |
11800 |
Mangrove/ Mudflat |
Thespesia populnea, Kandelia candel and
Hibiscus tiliaceus |
Public
usage |
High |
High |
0 |
|
LR
5 |
8180(m) long |
Natural Stream Course |
- |
Riparian
habitat and surface runoff |
High |
High |
14(m) long |
|
LR
6 |
273460 |
Seawater Body |
- |
Habitat purpose |
High |
High |
0 |
|
LR
7 |
23950 |
Beach/ Natural Coastline |
- |
Habitat purpose |
High |
High |
0 |
|
LR
8 |
3500 |
Vegetated Amenity Area/
Urban Recreation Area |
Acacia
confusa, Aleurites montana, Macaranga tanarius, Bomoax malabaricum,
Callistemon viminalis, Eucalyptus citriodora and Bauhinia Blakeana |
Ornamental & shading
purpose |
Medium |
Medium |
855 |
|
LR
9 |
1956(m) long |
Hiking Trail |
- |
Recreational
and educational purposes |
Medium |
Low |
0 |
|
LR 10 |
1800000 |
Lantau South Country Park |
Same
as LR 1 |
Habitat, recreation and
educational purpose |
High |
High |
0 |
7.6.10 Refer to Table 7.2a and Figures 7.5a to 7.5d, only LR 1 to LR 3, LR 5 and LR 8 would be potentially affected by the laying of the proposed raw water mains. When compared with the total areas of landscape resources to the potentially affected areas, the scale of the affected area is relatively small. In addition, the nature of change is reversible that the proposed construction area would be reinstated at operation stage. Therefore, the Magnitude of Change of LR 1 to LR 3, LR 5 and LR 8 would be Low and Negligible at construction stage and operation stage respectively. A summary of the Magnitude of Change for each LR in Siu Ho Wan is listed below:
|
No. of LR |
Name of LR |
Sensitivity |
Magnitude of Change (under Construction/ Operation) |
Relevant Table no. showing Significance Threshold |
|
LR 1 |
Scrubland/
Woodland on Natural Terrain |
High |
Low/ Negligible |
7.19, 7.20 |
|
LR 2 |
Grassland/
Scrubland |
Medium |
Low/ Negligible |
7.21, 7.22 |
|
LR 3 |
Active/ Abandoned
Agriculture |
Medium |
Low/ Negligible |
7.23, 7.24 |
|
LR 4 |
Mangrove/ Mudflat |
High |
Negligible/ Negligible |
7.25 |
|
LR 5 |
Natural Stream
Course |
High |
Low/ Negligible |
7.26, 7.27 |
|
LR 6 |
Seawater Body |
High |
Negligible/ Negligible |
7.28 |
|
LR 7 |
Beach/ Natural
Coastline |
High |
Negligible/ Negligible |
7.29 |
|
LR 8 |
Vegetated
Amenity Area/ Urban Recreational Area |
Medium |
Low/ Negligible |
7.30, 7.31 |
|
LR 9 |
Hiking Trail |
Low |
Negligible/ Negligible |
7.32 |
|
LR 10 |
Lantau South
Country Park |
High |
Negligible/ Negligible |
7.33 |
7.6.11 Figure 7.4b illustrates
the Visual Envelope, Visually Sensitive Receivers (VSRs) and Key Views (KVs) in
Pui O site. By standing at the proposed site during field survey, the extent of
the boundary would be checked and according to the closest hilly spurs and closest buildings, two Visual Envelopes (VEs) are formed. Within the VE of Pui O Raw Water Pumping
Station, the area
is visually characterized as remote village houses with some vegetation wrapped the existing Station. A
natural hilly slope is located at the west to northwest of the site. Within the VE of the
proposed raw water mains, the area is visually characterized as a light-traffic transport
corridor sandwiched between village houses and abandoned farmlands. Two ends of
the raw water mains are on natural hillside surrounded by abandoned farmland and natural vegetation where are hardly visible from
South Lantau Road. A
total of 8 VSRs are identified with the VE, which are described in Table 7.3
below: illustrates the Visual Envelope, Visually Sensitive
Receivers (VSRs) and Key Views (KVs) in Pui O site as follows:
Table 7.3 VSRs in Pui O
|
VSR |
Location & Name of VSR |
Type of
viewer |
Direction
of view towards the proposed project |
|
VSR 9 |
Residents
of Lo Uk Tsuen |
Residents |
South |
|
VSR 10 |
Users of
Bui O Public School |
Working staffs, students |
North |
|
VSR 11 |
Residents
of Pui O San Wai Tsuen |
Residents |
South |
|
VSR 12 |
Residents
of Pui O Lo Wai Tsuen |
Residents |
East, southeast |
|
VSR 13 |
Users of Mobil Petrol Filling
Station |
Working staff |
Northwest |
|
VSR 14 |
Users of Shell Petrol Filling
Station |
Working staff |
Northwest |
|
VSR 15 |
Residents
of Pui O Au Lo Wai Tsuen |
Residents |
Southeast |
|
VSR 16 |
Users of
South Lantau Road and Lantau Trail |
Drivers, passengers, hikers |
Southeast, west |
* Location of representative
VSRs would be referred to Figures 7.3c and 7.3e for better visualization.
Siu Ho Wan Site
7.7.1 Based on the Sensitivity and Magnitude of Change of each LCA identified in the Baseline Study above, the landscape impacts of each LCA without mitigation measures are illustrated in Tables 7.4 to 7.7 below. Impacts under both the construction and operation stages are similar:
Table 7.4 Landscape Impacts of LCA 1 in Siu Ho Wan Without Mitigation Measures
|
CONSTRUCTION
& OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/ Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/ Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7.5 Landscape Impacts of LCA 2 in Siu Ho Wan Without Mitigation Measures
|
CONSTRUCTION
& OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/ Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/ Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7.6 Landscape Impacts of LCA 3 in Siu Ho Wan Without Mitigation Measures
|
CONSTRUCTION
& OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/ Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/ Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7.7 Landscape Impacts of LCA 4 in Siu Ho Wan Without Mitigation Measures
|
CONSTRUCTION
& OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
7.7.2 The proposed works in Siu Ho Wan site mainly focuses on LCA 4. The nature of proposed construction of SHW WTW Extension and SHW Raw Water Booster Pumping Station is as same as the existing character of LCA 4, leading to Negligible landscape impacts at construction and operation stages. Besides, the areas of LCA 1 to 3 are out of the proposed construction areas so that Negligible landscape impact resulted.
7.7.3 In considering the negligible Significance Threshold, the proposed Project in Siu Ho Wan site is identified as Neutral in terms of landscape impact, meaning that the impact which will alter the existing landscape context but not to improve or destroy the existing characters. A summary of landscape impacts is as shown in Table 7.8 below:
Table 7.8 Summary of Landscape Impacts on LCAs in Siu Ho Wan without Mitigation Measures
|
No.
of LCA |
Name
of LCA |
Significance
threshold of landscape Impact (Construction Stage) |
Significance
threshold of landscape Impact (Operation Stage) |
Identification of the Landscape Impact |
|
LCA 1 |
Major
Transport Corridor |
Negligible |
Negligible |
Neutral |
|
LCA 2 |
Amenity
Area and Natural Terrain |
Negligible |
Negligible |
|
|
LCA 3 |
Coastal
Zone |
Negligible |
Negligible |
|
|
LCA 4 |
Government
and Public Area |
Negligible |
Negligible |
7.7.4 Based on the Sensitivity and Magnitude of Change of each LR identified in the Baseline Study above, the landscape impacts of each LR without mitigation measures are illustrated in Tables 7.8a to Table 7.8f:
Table 7.8a Landscape Impacts of LR 1 in Siu Ho Wan Without Mitigation Measures (Construction and Operation Stages)
|
CONSTRUCTION
& OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7.8b Landscape Impacts of LR 2 in Siu Ho Wan Without Mitigation Measures (Construction and Operation Stages)
|
CONSTRUCTION
& OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7.8c Landscape Impacts of LR 3 in Siu Ho Wan Without Mitigation Measures (Construction and Operation Stages)
|
CONSTRUCTION
& OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7.8d Landscape Impacts of LR 4 in Siu Ho Wan Without Mitigation Measures (Construction and Operation Stages)
|
CONSTRUCTION
& OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7.8e Landscape Impacts of LR 5 in
Siu Ho Wan Without Mitigation Measures (Construction and Operation Stages)
|
CONSTRUCTION
& OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7.8f Landscape Impacts of LR 6 in Siu Ho Wan Without Mitigation Measures (Construction and Operation Stages)
|
CONSTRUCTION
& OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
7.7.5 The proposed works in Siu Ho Wan site both during construction and operation stages would only affect two LRs – LR 3 and LR 4. The Significance Threshold of both LR 3 and LR 4 would be assessed as Slight at construction and operation stages due to the permanent nature but small scale of development. Their overall landscape impact would be identified as Adverse. The rest of LRs would receive Neutral overall impact with Negligible Significance Thresholds at construction and operation stages when they are out of the extent of the proposed project area. The significance of the landscape impacts on LRs in Siu Ho Wan is summarized as follows:
Table 7.8g Summary of Landscape Impacts on LRs in Siu Ho Wan without Mitigation Measures
|
No. of LR |
Name of LR |
Significance
threshold of landscape Impact (Construction
Stage) |
Significance
threshold of landscape Impact (Operation Stage) |
Identification of the Landscape Impact |
|
LR 1 |
Scrubland/
Woodland on Natural Terrain |
Negligible |
Negligible |
Neutral |
|
LR 2 |
Grassland/
Rock slope on Natural Terrain |
Negligible |
Negligible |
Neutral |
|
LR 3 |
Vegetation
within Amenity Area |
Slight |
Slight |
Adverse |
|
LR 4 |
Vegetation
within Government/ Public Utility Area |
Slight |
Slight |
Adverse |
|
LR 5 |
Freshwater
Body (Natural/ Artificial Channel) |
Negligible |
Negligible |
Neutral |
|
LR 6 |
Seawater
Body |
Negligible |
Negligible |
Neutral |
Pui
O Site
7.7.6 Based on the Sensitivity and Magnitude of Change of each LCA identified in the Baseline Study above, the landscape impacts of each LCA without mitigation measures are illustrated in Tables 7.9 to 7.17 below. Impacts under the construction and operation stages are shown in separate Tables when the impacts are different:
Table 7.9 Landscape
Impacts of LCA 1 in Pui O Without Mitigation Measures (Construction and
Operation Stages)
|
CONSTRUCTION
& OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/ Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/ Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7.10 Landscape Impacts of LCA 2 in Pui O Without Mitigation
Measures (Construction and Operation Stages)
|
CONSTRUCTION
& OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/ Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/ Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7.11 Landscape Impacts of LCA 3 in Pui O Without Mitigation Measures (Construction and Operation Stages)
|
CONSTRUCTION
& OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/ Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/ Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7.12 Landscape Impacts of LCA 4 in Pui O Without Mitigation Measures (Construction and Operation Stages)
|
CONSTRUCTION & OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7.13 Landscape Impacts of LCA 5 in Pui O Without Mitigation Measures (Construction & Operation Stages)
|
CONSTRUCTION
& OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7.14 Landscape Impacts of LCA 6 in Pui O Without Mitigation Measures (Construction & Operation Stages)
|
CONSTRUCTION
& OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7.15 Landscape Impacts of LCA 7 in Pui O Without Mitigation Measures
(Construction Stage)
|
CONSTRUCTION
STAGE |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/ Significant
Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7.16 Landscape Impacts of LCA 7 in Pui O Without Mitigation Measures
(Operation Stage)
|
OPERATION
STAGE |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7.17 Landscape Impacts of LCA 8 in Pui O Without Mitigation Measures (Construction & Operation Stages)
|
CONSTRUCTION
& OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
7.7.7 The laying of raw water mains in Pui O poses permanent landscape impacts on LCA 2 and temporary impacts on LCA 7. The Significance Threshold of landscape impact for LCA 2 and 7 is Moderate at construction stages. In addition, the laying of raw water mains should pose more impacts on LCA 2 as approximately 2.5m wide areas along the proposed raw water mains alignment would not be reinstated back with vegetation. Therefore, the landscape impact of LCA 2 would be identified as Moderate at operation stage. For LCA 7, the proposed works area would be largely reinstated back to the original condition so that the landscape impact of LCA 7 would be identified as Negligible. A detailed tree survey will be carried out for tree felling application.
7.7.8 In general, only LCA 2 and 7 is identified as Adverse in terms of landscape impact, especially during construction stage and the area of LCA 2 at both stages, meaning that the impact would be detrimental to the existing landscape context. For LCA 1, 3 to 6 and 8 is identified as Neutral, when the impact will alter the existing character but not to improve or destroy it. A summary of landscape impact is as shown Table 7.18 below:
Table 7.18 Summary of Landscape Impacts on LCAs in Pui O without Mitigation Measures
|
No. of LCA |
Name
of LCA |
Significance
threshold of landscape Impact (Construction
Stage) |
Significance
threshold of landscape Impact (Operation Stage) |
Identification of the Landscape Impact |
|
LCA 1 |
Major
Transport Corridor |
Negligible |
Negligible |
Neutral |
|
LCA 2 |
Amenity
Area and Natural Terrain |
Moderate |
Moderate |
Adverse |
|
LCA 3 |
Coastal
Zone |
Negligible |
Negligible |
Neutral |
|
LCA 4 |
Government
and Public Utility |
Negligible |
Negligible |
|
|
LCA 5 |
Village |
Negligible |
Negligible |
|
|
LCA 6 |
School and
Urban Recreation Area |
Negligible |
Negligible |
|
|
LCA 7 |
Agricultural
Flatland |
Moderate |
Negligible |
Adverse |
|
LCA 8 |
Pui O Beach |
Negligible |
Negligible |
Neutral |
7.7.9 Based on the Sensitivity and Magnitude of Change of each LR identified in the Baseline Study above, the landscape impacts of each LR in Pui O without mitigation measures are illustrated in Tables 7.19 to Table 7.33:
Table 7.19 Landscape Impacts of LR 1 in Pui O Without Mitigation Measures (Construction Stage)
|
CONSTRUCTION
STAGE |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7. 20 Landscape Impacts of LR 1 in Pui O Without Mitigation Measures (Operation Stage)
|
OPERATION
STAGE |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7. 21 Landscape Impacts of LR 2 in
Pui O Without Mitigation Measures (Construction Stage)
|
CONSTRUCTION
STAGE |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7. 22 Landscape Impacts of LR 2 in
Pui O Without Mitigation Measures (Operation Stage)
|
OPERATION
STAGE |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7. 23 Landscape Impacts of LR 3 in Pui O Without Mitigation Measures (Construction Stage)
|
CONSTRUCTION
STAGE |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7. 24 Landscape Impacts of LR 3 in Pui O Without Mitigation Measures (Operation Stage)
|
OPERATION
STAGE |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7. 25 Landscape Impacts of LR 4 in Pui O Without Mitigation Measures (Construction and Operation Stages)
|
CONSTRUCTION & OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7. 26 Landscape Impacts of LR 5 in Pui O Without Mitigation Measures (Construction Stage)
|
CONSTRUCTION
STAGE |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7. 27 Landscape Impacts of LR 5 in Pui O Without Mitigation Measures (Operation Stage)
|
OPERATION
STAGE |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7. 28 Landscape Impacts of LR 6 in Pui O Without Mitigation Measures (Construction and Operation Stages)
|
CONSTRUCTION & OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7. 29 Landscape Impacts of LR 7 in Pui O Without Mitigation Measures (Construction and Operation Stages)
|
CONSTRUCTION & OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7. 30 Landscape Impacts of LR 8 in Pui O Without Mitigation Measures (Construction Stage)
|
CONSTRUCTION
STAGE |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7. 31 Landscape Impacts of LR 8 in Pui O Without Mitigation Measures (Operation Stage)
|
OPERATION
STAGE |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7. 32 Landscape Impacts of LR 9 in Pui O Without Mitigation Measures (Construction and Operation Stages)
|
CONSTRUCTION & OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
Table 7. 33 Landscape Impacts of LR 10 in Pui O Without Mitigation Measures (Construction and Operation Stages)
|
CONSTRUCTION & OPERATION STAGES |
Sensitivity
/ Quality |
|||
|
Low |
Medium |
High |
||
|
Magnitude
of Change |
High |
Moderate
Impact |
Moderate
/Significant Impact |
Significant
Impact |
|
Moderate |
Slight
/ Moderate Impact |
Moderate
Impact |
Moderate
/Significant Impact |
|
|
Low |
Negligible
/ Slight Impact |
Slight
/ Moderate Impact |
Moderate
Impact |
|
|
Negligible |
Negligible |
Negligible |
Negligible |
|
7.7.10 The proposed laying of raw water mains in Pui O site would potentially affect five LRs – LR 1 to LR 3, LR 5 and LR 8 only at construction stage. The Significance Threshold of LR 1 and LR 5 is Moderate at construction stage due to their high sensitivity to change. Similarly, the Significance Threshold of LR 2, LR 3 and LR 8 is Slight at construction stage due to their medium sensitivity to change. The overall landscape impact of the affected LRs would be identified as Adverse at construction. When the affected area would be reinstated after the laying of the raw water mains (excluded the area of 2.5m wide excavated trench for future maintenance), the significance of landscape impacts on all LRs in Pui O would be Negligible at operation stage. LR 4, LR 6, LR 7, LR 9 and LR 10 would receive Neutral overall impact with Negligible Significance Thresholds at construction stage, while all LRs would be Neutral with Negligible Significance Thresholds at operation stage. On the other hand, no LRs would be affected by the proposed re-construction of Pui O Raw Water Pumping Station when the construction works would be conformed within its existing site. The significance of the landscape impacts on LRs in Pui O is summarized as follows:
Table 7. 34 Summary of Landscape Impacts on LRs in Pui O without Mitigation Measures
|
No. of LR |
Name
of LR |
Significance
threshold of landscape Impact (Construction Stage) |
Significance
threshold of landscape Impact (Operation Stage) |
Identification of the Landscape Impact |
|
LR 1 |
Scrubland/
Woodland on Natural Terrain |
Moderate |
Negligible |
Adverse/ Neutral |
|
LR 2 |
Grassland/
Scrubland |
Slight |
Negligible |
|
|
LR 3 |
Active/
Abandoned Agriculture |
Slight |
Negligible |
|
|
LR 4 |
Mangrove/
Mudflat |
Negligible |
Negligible |
Neutral |
|
LR 5 |
Natural
Stream Course |
Moderate |
Negligible |
Adverse/ Neutral |
|
LR 6 |
Seawater
Body |
Negligible |
Negligible |
Neutral |
|
LR 7 |
Beach/
Natural Coastline |
Negligible |
Negligible |
|
|
LR 8 |
Vegetated
Amenity Area/ Urban Recreational Area |
Slight |
Negligible |
Adverse/ Neutral |
|
LR 9 |
Hiking
Trail |
Negligible |
Negligible |
Neutral |
|
LR 10 |
Lantau
South Country Park |
Negligible |
Negligible |
Siu Ho
Wan Site
7.8.1 Based on the VSRs identified in the baseline study, the sensitivity of the VSRs are summarized in Table 7.35 below:
Table 7.35 The Sensitivity of the VSRs in Siu Ho Wan
|
Major views |
|||||||
|
Seaview, road, natural
terrain |
|||||||
Note:
1 Panorama view – AV; Open View – OV; Partial
View – PV; Vista – V; Glimpse View – GV; No View – NV
2 Duration/Frequency of
View – views would be of particularly distinctive character susceptible to
relatively small changes especially when the receivers get no alternative views
apart from the proposed project area and absence of existing visual screening
7.8.2
The magnitude of change for the VSRs is summarized
in Table 7.36 below:
Table 7.36 Identification of the Magnitude of Change for the VSRs in Siu Ho Wan
|
C |
Medium |
|||||||
|
C |
||||||||
|
C |
||||||||
|
C |
||||||||
|
C |
||||||||
|
C |
||||||||
|
C |
||||||||
|
C |
||||||||
Note: 1 Foreground – FG; Middle
ground – MG; Background – BG; No blockage of View – N
2 Reasons for ‘High’ compatibility with surrounding
landscape for VSR 4, 6, 7, 8, 8b, 8c and 8d are listed below:
-
the height and form of the
proposed SHW WTW Extension and SHW Raw Water Booster Pumping Station would be
similar to the existing WTW buildings
-
No external structures of
the proposed WTW Extension would be visually higher than the existing WTW
buildings
-
No external structures of
the proposed SHW Raw Water Booster Pumping Station would be visually higher
than the existing hilly slopes at its back
7.8.3 The visual impact assessment of the VSRs without mitigation measures are summarized as follows:
Table 7.37 Visual Impact Assessment of the VSRs in Siu Ho Wan without Mitigation Measures
|
VSR |
Sensitivity |
Magnitude of change |
Significance threshold of visual impact |
Identification of the visual impact |
|
|
VSR 1 |
Medium |
Moderate |
Moderate |
Adverse |
|
|
Moderate |
Moderate |
||||
|
VSR 2 |
Medium |
Moderate |
Moderate |
||
|
Moderate |
Moderate |
||||
|
VSR 3 |
Low |
High |
|
||
|
High |
|
||||
|
VSR
4 |
Low |
Low |
Negligible/
Slight |
||
|
Low |
Negligible/
Slight |
||||
|
VSR 5 |
Low |
Low |
Negligible/
Slight |
||
|
Low |
Negligible/
Slight |
||||
|
VSR 6 |
Low |
Low |
Negligible/
Slight |
||
|
Low |
Negligible/
Slight |
||||
|
VSR
7 |
Low |
Low |
Negligible/
Slight |
||
|
Low |
Negligible/
Slight |
||||
|
VSR
8 |
Low |
Low |
Negligible/
Slight |
||
|
Low |
Negligible/
Slight |
||||
|
VSR
8a |
|
Low |
|
||
|
Low |
|
||||
|
VSR
8b |
Low |
Low |
Negligible/
Slight |
||
|
Low |
Negligible/
Slight |
||||
|
VSR
8c |
Low |
Low |
Negligible/
Slight |
||
|
Low |
Negligible/
Slight |
||||
|
VSR 8d |
Low |
Low |
Negligible/
Slight |
||
|
Low |
Negligible/
Slight |
7.8.4 Visual impacts are illustrated in Figures 7.6a to 7.6b.
7.8.5 Visual impacts are identified to be Adverse, means an impact which would be detrimental to the existing views.
7.8.6
The significance threshold of VSR 4 to
VSR VSR 8, VSR 8b to VSR 8d, 8d
is considered to be Negligible/Slight Adverse due to relatively few
users, long viewing distance to the proposed Project and small relative visual
scale of the development with a number of alternative views available. The significance threshold
of VSR 8a is considered to be Slight/Moderate Adverse as there are some receivers
using Discovery Bay Tunnel Road and viewing towards the site is open. Yet, VSR 1 to
VSR 3 has close proximity of the proposed Raw Water Booster Pumping Station and
therefore the
significance threshold would createbe Moderate (VSR 1 and
2) and Slight/Moderate (VSR 3) significance threshold of the visual impactand the impact is identified
as adverse.
Pui O Site
7.8.7 Based on the VSRs identified in the baseline study, the sensitivity of the VSRs are summarized as follows:
Table 7.38 The Sensitivity of the VSRs in Pui O
|
Major views |
|||||||
|
Road, Natural terrain, agricultural fields, &
village houses |
|||||||
Note:
1 Panorama view – AV; Open View – OV; Partial
View – PV; Vista – V; Glimpse View – GV; No View – NV
2 Duration/Frequency of
View – views would be of particularly distinctive character susceptible to
relatively small changes especially when the receivers get no alternative views
apart from the proposed project area and absence of existing visual screening
3 An existing amenity area between South
Lantau Road and Pui O Raw Water Pumping Station is planted with tall canopy
trees so that existing visual screening is sufficiently provided for South
Lantau Road users.
4 Due to Long and High Duration/Frequency of View with the absence of
visual screening, the sensitivity of VSR 13 and 14 are identified as High.
7.8.8 The magnitude of change for the VSRs are summarized as follow:
Table 7.39 Identification of the Magnitude of Change for the VSRs in Pui O
|
C |
Medium |
|||||||
|
C |
||||||||
|
C |
||||||||
|
C2 |
||||||||
|
C |
||||||||
|
C |
||||||||
|
C |
||||||||
|
C |
||||||||
Note :
1 Foreground –
FG; Middle ground – MG; Background – BG, No blockage of View – N
7.8.9 The visual impact assessment of the VSRs without mitigation measures are summarized as follows:
Table 7.40 Visual Impact Assessment of the VSRs in Pui O without Mitigation Measures
|
VSR |
Sensitivity |
Magnitude of change |
Significance
threshold of visual impact |
Identification of
the visual impact |
|
|
VSR 9 |
High |
Moderate |
Moderate/ Significant |
Adverse |
|
|
Negligible |
Negligible |
||||
|
VSR 10 |
Medium |
Moderate |
Moderate |
Adverse |
|
|
Negligible |
Negligible |
||||
|
VSR 11 |
High |
Moderate |
Moderate/ Significant |
||
|
Negligible |
Negligible |
||||
|
VSR 12 |
High |
Moderate |
Moderate/ Significant |
||
|
Low |
Moderate |
||||
|
VSR 13 |
High |
Moderate |
Moderate/ Significant |
||
|
Negligible |
Negligible |
||||
|
VSR 14 |
High |
Moderate |
Moderate/ Significant |
||
|
Negligible |
Negligible |
||||
|
VSR 15 |
Medium |
Moderate |
Moderate |
||
|
Negligible |
Negligible |
||||
|
VSR 16 |
Low |
Moderate |
Slight/ Moderate |
||
|
Negligible |
Negligible |
7.8.10 Visual impacts are illustrated in Figure 7.6c.
7.8.11 Visual impacts are identified to be Adverse, means an impact which would be detrimental to the existing views.
7.8.12 The significance threshold of all VSRs except VSR 16 is considered to be Moderate/Significant during the construction stage due to the close proximity to the proposed construction. For VSR 16, it has ‘Low’ Sensitivity due to the short duration and low frequency of view with some visual screening along roadside, leading to Slight/Moderate significance threshold during the construction stage.
7.8.13 The significance threshold of all VSRs, with the exception of VSR 12, is considered to be Negligible at the operation stage as the proposed laying of raw water mains would be constructed underground and the affected areas would be reinstated back. The significance threshold of VSR 12, on the other hand, is Moderate at the operation stage as demolition and construction process of the existing Pui O Raw Water Pumping Station imply longer construction period and the proposed building would be constructed above ground.
7.9.1 Landscape and visual impact assessment in the previous sections predict that majority of landscape and visual impacts during construction and operation stages would be Negligible. However, there are a few exceptions, namely:
· Slight landscape impact at construction and operation stages to LR 3 – Vegetation within amenity area, Siu Ho Wan site
· Slight landscape impact at construction and operation stages to LR 4 – Vegetation within Government Public Utility Area, Siu Ho Wan site
· Moderate visual impact at construction and operation stages to VSR 1 and 2 – users of Airport Railway and North Lantau Highway, Siu Ho Wan site
·
Slight/Moderate
visual impact at construction and operation stages to VSR 3 – users of Cheung
Tung Road, Siu Ho Wan site
·
Negligible/Slight visual impact at
construction and operation stages to VSR 4 to VSR 8, VSR 8b to VSR 8d – users of Discovery
Bay Tunnel Road, Discovery Bay Tunnel Administrative Building,
users who work in New Lantau Bus Co. SHW Bus Depot and future SHW Sewage
Treatment Works Area, Siu Ho Wan site
·
Slight/Moderate visual impact at construction and
operation stages to VSR 8a – users of Discovery Bay Tunnel Road
· Moderate landscape impact at construction and operation stages to LCA 2 – Amenity Area and Natural Terrain, Pui O site
· Moderate landscape impact at construction stage to LCA 7 – Agricultural Flatland, Pui O site
· Moderate landscape impact at construction stage to LR 1 – Scrubland/ Woodland on Natural Terrain, Pui O site
· Slight landscape impact at construction stage to LR 2 – Grassland/ Scrubland, Pui O site
· Slight landscape impact at construction stage to LR 3 – Active/ Abandoned Agriculture, Pui O site
· Moderate landscape impact at construction stage to LR 5 – Natural Stream Course
· Slight landscape impact at construction stage to LR 8 – Vegetated Amenity Area/ Urban Recreational Area, Pui O site
· Slight/Moderate to Moderate/Significant visual impact at construction stage to all VSRs – residents of Lo Uk Tsuen, Pui O San Wai Tsuen, Pui O Lo Wai Tsuen, Pui O Au Lo Wai Tsuen, users of Bui O Public School and two petrol filling stations, Pui O site
· Moderate visual impact at operation stage to VSR 12 – residents of Pui O Lo Wai Tsuen, Pui O site
7.9.2 Landscape and visual impacts of the proposed works are in terms of removal of existing vegetation, and proximity of the proposed structures to road users and residents.
7.9.3 In order to mitigate these impacts, the following on-site Landscape Mitigation Measures (LMMs) are recommended, which reference shall be made to Figures 7.7a to 7.7e:
· LMM 1 – Sympathetic Design of Structures
Sympathetic design to minimize landscape and visual impacts, such as control of site area and building height, number of storeys and GFA.
VSR 1 to 12 in Siu Ho Wan site and VSR 12 in Pui O site would be
benefited by implementing LMM 1. The building form and height
of the proposed construction of SHW WTW Extension and SHW Raw Water Booster
Pumping Station in Siu Ho Wan, and Pui O Raw Water Pumping Station in Pui O
would be in rectangular form of similar
height
as to or lower than the nearby existing WTW buildings in Siu Ho
Wan and existing Pui O No. 2 Raw Water Pumping Station.
· LMM 2 – Design of External Appearance
Compatible design and construction materials and surface finishes of the proposed structures should match with the nearby existing external appearance of WTW buildings for achieving visual uniformity. VSR 1 to 8d in Siu Ho Wan site and VSR 12 in Pui O site would be benefited by implementing LMM 2. The proposed SHW WTW Extension in Siu Ho Wan and Pui O Raw Water Pumping Station in Pui O should consider the design of the existing WTW buildings in Siu Ho Wan and the existing Pui O No. 2 Raw Water Pumping Station. With same or similar external appearance, the proposed constructions in both Siu Ho Wan and Pui O sites would have high visual compatibility with the nearby existing external appearance of WTW buildings..
Subtle chromatic scheme as the colour of the surface finishes of the proposed structures in Siu Ho Wan site and Pui O site would be considered as the alternative option. By using visually recessive colour(s) or finish(es) for example, greyish blue, would visually merge the proposed structures into the surrounding landscape. It would be visually applicable for the proposed SHW Raw Water Booster Pumping Station when it is out of the existing SHW WTW boundary but surrounded by green and road landscape. Appropriate texture on the external walls of the proposed structure to minimise the bulk form should be incorporated in the detailed design stage. Introducing subtle chromatic colour scheme on the proposed structure would mainly benefit VSR 1 to 3 – users of Airport Railway, North Lantau Highway and Cheung Tung Road due to their close proximity to the structure (Refer to Figure 7.7a to 7.7b).
It is recommended that tAfter considering the
alternative option – chromatic colour scheme (cross-referencing Figure 7.7a to
7.7b), the proposed SHW WTW Extension in Siu Ho Wan
and Pui O Raw Water Pumping Station in Pui O should be consideredtaken the external appearance design
of
the existing WTW buildings in Siu Ho Wan and the existing Pui O
No. 2 Raw Water Pumping Station into account. While tThe alternative option
– chromatic colour scheme with appropriate texture should be considered while
designing the external surface of the proposed SHW Raw Water Booster Pumping
Station.
· LMM 3 – Reinstatement of Planting on Disturbed Land
Implementing LMM 3 would benefit LR 3 and all VSRs in Siu Ho Wan site. Reinstatement of planting should be provided for both sides of the vehicular entrance of the proposed SHW Raw Water Booster Pumping Station in Siu Ho Wan (Refer to Figure 7.7a and 7.7d). Planting of native, fast-growing tall canopy trees with shrubs underneath would create a visually continuous amenity area like a green curtain along Cheung Tung Road. With LMM 3, the affected area in LR 3 should be reinstated and the reinstatement planting should visually screen the proposed buildings.
For LCA 2 , LCA 7, LR 1 to LR 3, LR 5 and LR 8, and all VSRs in Pui O
site, reinstatement of planting should be provided in both sides of the
proposed laying of raw water mains (excluded the maintenance access of 2.5m
wide where the raw water mains underneath) (Refer to Figure 7.7e). Native tree
and shrub species or the species as same as the nearby existing
woodland/scrubland should be selected for enhancing ecological value and
screening the maintenance access.
A tree survey and tree felling application in accordance with ETWB TCW No. 2/2004 and WBTC No. 14/2002 should be conducted to ensure no existing trees are removed without prior approval. Existing trees to be retained within the works area should be protected by fencing. Existing trees requiring removal should be considered to transplant, which should be carried out by specialist landscape contractor.
· LMM 4 – Compensatory Planting
Landscape or compensatory planting should be provided where appropriate for enhancing greening and achieving visual screening. In this aspect, compensatory tree planting should be considered. Selection of plant species should match with the surrounding vegetation type and form for consistency of landscape resources and visual comfort, for matching with the local habitat. Tree planting should be firstly considered when the amenity area or slope is feasible for planting trees so as to provide visual screening.
External walls of the proposed SHW Raw Water Booster Pumping Station and Pui O Raw Water Pumping Station that closely facing the VSRs would be effectively softened and screened by planting of climbers. However, this measure is not practicable when there would be door openings on the walls to suit operation need. Relocation of the door openings to other walls would not be feasible as this would pose additional constraints to future operation and maintenance works.
LCA 2, LR 3 and LR 4 in Siu Ho Wan site should be gained with additional planting area by implementing LMM 4. Additional Amenity Planting area of approximately 2000mm to 3000mm wide where fast growing tall trees with dense foliage should be provided along the site boundary of SHW WTW areas and Siu Ho Wan Raw Water Booster Pumping Station. For planting close to or surrounded by natural terrain, compensatory planting should be arranged in a semi natural manner where feasible in order to blend the new planting into natural environment. Meanwhile, the planting design, acting as visual screening, would mitigate all VSRs in Siu Ho Wan (Refer to Figure 7.7a, 7.7b and 7.7d).
To mitigate VSR 12 and 16 in Pui O site, planting of native, fast growing canopy trees where appropriate along the site boundary of Pui O Raw Water Pumping Station should be provided for visual screening when viewing from Pui O Lo Wai Tsuen and South Lantau Road (Refer to Figure 7.7c and 7.7e).
· LMM 5 – Construction Period
Reduce the construction period as far as practicable to minimize the landscape and visual impacts during construction period.
LCA 2 and 7, LR 1, 2, 5 and 8 in Pui O site should
be mitigated by LMM 5. For the proposed laying of raw water mains
in Pui O site, works areas and temporary access for construction machinery and
vehicles should be minimized in order to minimize the landscape impacts on
existing characters and vegetation. Particular attention should be paid when
the proposed raw water mains is laid across LR 5. No construction wastes and
materials should be dumped or stored in LR 5. No dumping is allowed in all
conditions. The loss of landscape resources would be minimized as well. Similar
methods should also be implemented for minimizing the landscape impacts on LR 3
in Siu Ho Wan site.
To minimize visual disturbances on all VSRs in Siu Ho Wan and Pui O sites, temporary hoarding barriers should be of a recessive visual appearance in both colour and form where majority of the surrounding landscapes are vegetated with woodland and scrubland.
7.10.1 Based on the proposed mitigation measures recommended above, a summary of residual landscape and visual impacts is shown in Tables 7.29 to 7.32 below. Reference shall be made to Figures 7.8a to 7.8c on Residual Visual Impacts:
Table 7.41 Residual Landscape Impacts on LCAs in Siu Ho Wan with Mitigation Measures
|
No. of LCA |
Name of LCA |
Significance
Threshold Without
LMMs |
Proposed LMMs |
Significance
Threshold With LMMs |
Identification
of the Landscape Impact |
|
During Construction Stage/ Operation Stage |
|||||
|
LCA 1 |
Major
Transport Corridor |
Negligible |
- |
Negligible |
Neutral |
|
LCA 2 |
Amenity
Area and Natural Terrain |
Negligible |
Negligible |
||
|
LCA 3 |
Coastal
Zone |
Negligible |
Negligible |
||
|
LCA 4 |
Government
and Public Area |
Negligible |
Negligible |
||
Table 7.42 Residual Landscape Impacts on LRs in Siu Ho Wan with Mitigation Measures
|
No. of LR |
Name of LR |
Significance
Threshold Without
LMMs |
Proposed LMMs |
Significance
Threshold With LMMs |
Identification
of the Landscape Impact |
|
During Construction Stage/ Operation Stage |
|||||
|
LR
1 |
Scrubland/
Woodland on Natural Terrain |
Negligible |
- |
Negligible |
Neutral |
|
LR
2 |
Grassland/
Rock slope on Natural Terrain |
Negligible |
Negligible |
||
|
LR
3 |
Vegetation
within Amenity Area |
Slight |
3 |
Negligible |
Beneficial |
|
LR
4 |
Vegetation within
Government/ Public Utility Area |
Slight |
4 |
Negligible |
Beneficial |
|
LR
5 |
Freshwater
Body (Natural/ Artificial Channel) |
Negligible |
- |
Negligible |
Neutral |
|
LR
6 |
Seawater Body |
Negligible |
- |
Negligible |
|
Table 7.43 Residual
Landscape Impacts on LCAs in Pui O with Mitigation Measures
|
No. of LCA |
Name of LCA |
Significance
Threshold Without
LMMs |
Proposed LMMs |
Significance
Threshold With LMMs |
Identification
of the Landscape Impact |
|
During
Construction Stage |
|||||
|
LCA 1 |
Major
Transport Corridor |
Negligible |
- |
Negligible |
Neutral |
|
LCA 2 |
Amenity
Area and Natural Terrain |
Moderate |
|
Negligible |
|
|
LCA 3 |
Coastal
Zone |
Negligible |
- |
Negligible |
|
|
LCA 4 |
Government
and Public Area |
Negligible |
Negligible |
||
|
LCA 5 |
Village |
Negligible |
Negligible |
||
|
LCA 6 |
School and
Urban Recreation Area |
Negligible |
Negligible |
||
|
LCA 7 |
Agricultural Flatland |
Moderate |
3 |
Moderate |
Adverse |
|
LCA 8 |
Pui O Beach |
Negligible |
- |
Negligible |
Neutral |
|
During
Operation Stage |
|||||
|
LCA 1 |
Major
Transport Corridor |
Negligible |
- |
Negligible |
Neutral |
|
LCA 2 |
Amenity
Area and Natural Terrain |
Moderate |
3, 4 |
Negligible |
|
|
LCA 3 |
Coastal
Zone |
Negligible |
- |
Negligible |
|
|
LCA 4 |
Government
and Public Area |
Negligible |
Negligible |
||
|
LCA 5 |
Village |
Negligible |
Negligible |
||
|
LCA 6 |
School
and Urban Recreation Area |
Negligible |
Negligible |
||
|
LCA 7 |
Agricultural
Flatland |
Negligible |
Negligible |
||
|
LCA 8 |
Pui
O Beach |
Negligible |
Negligible |
||
Table
7.44 Residual Landscape Impacts on
LRs in Pui O with Mitigation Measures
|
No. of LR |
Name of LR |
Significance
Threshold Without
LMMs |
Proposed LMMs |
Significance
Threshold With LMMs |
Identification
of the Landscape Impact |
|
During Construction Stage |
|||||
|
LR
1 |
Scrubland/
Woodland on Natural Terrain |
Moderate |
3
|
Moderate |
Adverse |
|
LR
2 |
Grassland/
Scrubland |
Slight |
Slight |
||
|
LR
3 |
Active/
Abandoned Agriculture |
Slight |
Negligible |
Neutral |
|
|
LR
4 |
Mangrove/ Mudflat |
Negligible |
- |
Negligible |
|
|
LR
5 |
Natural
Stream Course |
Moderate |
|
Negligible |
|
|
LR
6 |
Seawater
Body |
Negligible |
- |
Negligible |
|
|
LR
7 |
Beach/
Natural Coastline |
Negligible |
- |
Negligible |
|
|
LR
8 |
Vegetated
Amenity Area/ Urban Recreational Area |
Slight |
3 |
Slight |
Adverse |
|
LR
9 |
Hiking
Trail |
Negligible |
- |
Negligible |
Neutral |
|
LR
10 |
Lantau
South Country Park |
Negligible |
- |
Negligible |
|
|
During
Operation Stage |
|||||
|
LR 1 |
Scrubland/ Woodland on Natural Terrain |
Negligible |
- |
Negligible |
Neutral |
|
LR 2 |
Grassland/ Scrubland |
Negligible |
Negligible |
||
|
LR 3 |
Active/ Abandoned Agriculture |
Negligible |
Negligible |
||
|
LR 4 |
Mangrove/
Mudflat |
Negligible |
Negligible |
||
|
LR 5 |
Natural Stream Course |
Negligible |
Negligible |
||
|
LR 6 |
Seawater Body |
Negligible |
Negligible |
||
|
LR 7 |
Beach/ Natural Coastline |
Negligible |
Negligible |
||
|
LR 8 |
Vegetated Amenity Area/ Urban Recreational
Area |
Negligible |
Negligible |
||
|
LR 9 |
Hiking Trail |
Negligible |
Negligible |
||
|
LR 10 |
Lantau South Country Park |
Negligible |
Negligible |
||
Table
7.45 Residual Visual Impact of the VSRs
in Siu Ho Wan with Mitigation Measures
|
No. of VSR |
Magnitude of change |
Significance Threshold |
Proposed LMMs |
Magnitude of change |
Significance Threshold |
Identification of the visual impact |
|
|
Without LMMs |
With LMMs |
||||||
|
During
Construction Stage |
|||||||
|
VSR
1 |
Moderate |
Moderate |
4, 5 |
Low |
Slight/ Moderate |
Adverse |
|
|
VSR
2 |
Medium |
Moderate |
Moderate |
Low |
Slight/ Moderate |
||
|
VSR
3 |
|
Moderate |
|
Slight/ Moderate |
|||
|
VSR
4 |
Low |
Negligible/ Slight |
Negligible |
Negligible |
Neutral |
||
|
VSR
5 |
Low |
Negligible/ Slight |
Negligible |
Negligible |
|||
|
VSR
6 |
Low |
Negligible/ Slight |
Negligible |
Negligible |
|||
|
VSR
7 |
Low |
Negligible/ Slight |
Negligible |
Negligible |
|||
|
VSR
8 |
Low |
Negligible/ Slight |
Negligible |
Negligible |
|||
|
VSR
8a |
Low |
Slight/ Moderate |
Negligible |
Negligible |
|||
|
VSR
8b |
Low |
Negligible/ Slight |
Negligible |
Negligible |
|||
|
VSR
8c |
Low |
Negligible/ Slight |
Negligible |
Negligible |
|||
|
VSR
8d |
Low |
Negligible/ Slight |
Negligible |
Negligible |
|||
|
During
Operation Stage1 |
|||||||
|
VSR
1 |
Moderate |
Moderate |
1, 2, 3, 4 |
Low |
Slight/Moderate |
Neutral |
|
|
VSR
2 |
Medium |
Moderate |
Moderate |
Low |
Slight/Moderate |
||
|
VSR
3 |
High |
Moderate |
Moderate |
Slight/Moderate |
|||
|
VSR
4 |
Low |
Negligible/ Slight |
Negligible |
Negligible |
|||
|
VSR
5 |
Low |
Negligible/ Slight |
Negligible |
Negligible |
|||
|
VSR
6 |
Low |
Negligible/ Slight |
Negligible |
Negligible |
|||
|
VSR
7 |
Low |
Negligible/ Slight |
Negligible |
Negligible |
|||
|
VSR
8 |
Low |
Negligible/ Slight |
Negligible |
Negligible |
|||
|
VSR
8a |
Low |
Slight/ Moderate |
Negligible |
Negligible |
|||
|
VSR
8b |
Low |
Negligible/ Slight |
Negligible |
Negligible |
|||
|
VSR
8c |
Low |
Negligible/ Slight |
Negligible |
Negligible |
|||
|
VSR
8d |
Low |
Negligible/ Slight |
Negligible |
Negligible |
|||
1 Alternative option - visually recessive
colour with appropriate texture as surface finishes of the proposed SHW Raw
Water Booster Pumping Station, is considered during the visual impact
assessment.
Table 7.46 Residual
Visual Impact of the VSRs Pui O with Mitigation Measures
|
No. of VSR |
Magnitude of change |
Significance Threshold |
Proposed LMMs |
Magnitude of change |
Significance Threshold |
Identification of the visual impact |
|
|
Without LMMs |
With LMMs |
||||||
|
During
Construction Stage |
|||||||
|
VSR
9 |
Moderate |
Moderate/ Significant |
3, 5 |
Low |
Moderate |
Adverse
|
|
|
VSR
10 |
Medium |
Moderate |
Moderate |
Low |
Slight/ Moderate |
||
|
VSR
11 |
Moderate |
Moderate/ Significant |
Low |
Moderate |
|||
|
VSR
12 |
Moderate |
Moderate/
Significant |
3, 4, 5 |
Low |
Moderate |
||
|
VSR
13 |
Moderate |
Moderate/ Significant |
3, 5 |
Low |
Moderate |
||
|
VSR
14 |
Moderate |
Moderate/ Significant |
Low |
Moderate |
|||
|
VSR
15 |
Moderate |
Moderate |
Low |
Slight/ Moderate |
|||
|
VSR
16 |
Moderate |
Slight/ Moderate |
4, 5 |
Low |
Slight/ Moderate |
||
|
During
Operation Stage |
|||||||
|
VSR
9 |
Negligible |
Negligible |
- |
Negligible |
Negligible |
Neutral |
|
|
VSR
10 |
Medium |
Negligible |
Negligible |
Negligible |
Negligible |
||
|
VSR
11 |
Negligible |
Negligible |
Negligible |
Negligible |
|||
|
VSR
12 |
Low |
Moderate |
1, 2, 4 |
Negligible |
Negligible |
||
|
VSR
13 |
Negligible |
Negligible |
- |
Negligible |
Negligible |
||
|
VSR
14 |
Negligible |
Negligible |
Negligible |
Negligible |
|||
|
VSR
15 |
Negligible |
Negligible |
Negligible |
Negligible |
|||
|
VSR
16 |
Negligible |
Negligible |
Negligible |
Negligible |
|||
7.10.2 Refer to Tables 7.41 and 7.42, the incorporation of LMM 3 andto LMM 45 into the proposed
works would be effective in reducing ‘Slight’ landscape impacts on LR 3 and 4
in Siu Ho Wan site during the construction and operation stages to Negligible
impacts. With mitigation measures, the landscape impacts would be eliminated
from ‘Adverse’ to Neutral in Siu Ho Wan site.
7.10.3 Refer to Tables 7.43 and 7.44, the incorporation of LMM 3 and LMM 4 into the proposed works would be effective in reducing ‘Moderate’ landscape impacts on LCA 2 and LR 5 in Pui O site during the construction and operation stages to Negligible impacts. LCA 7 would remain on Moderate impacts, while LR 2 and LR 8 on Slight impacts at construction stage as the proposed laying of raw water mains would unavoidably occupy small part of the areas within the construction period.
7.10.4 Refer to Tables 7.45 and 7.46, the mitigation measures would be
effective in reducing adverse visual impacts in Siu Ho Wan. Together with the
use of visually recessive colours with appropriate texture as surface finishes
of the proposed SHW Raw Water Booster Pumping Station, ‘Negligible/Slight’
visual impacts would be reduced to Negligible on all VSR 4 to 8, 8b to 8ds
during construction and operation stages. and originallyUnmitigated ‘Moderate’
impacts on VSR 1 to 3, and ‘Slight/ Moderate’ impactson VSR 8a would also be reduced to Negligible
on
VSR 1 to 3 Slight/Moderate and Negligible
respectively during construction and operation stages. The measures would be
applicable as well in reducing ‘Moderate’ and ‘Slight/Moderate’ visual impacts
to Slight/Moderate on VSR 1 and 2 and Negligible/Slight on VSR 3
during construction stage. For Pui O site with mitigation measures, LMM 3 and
LMM 5 would be effective in reducing ‘Moderate/Significant’ visual impacts on VSR 9, 11, 13 and 14and ‘Moderate/
Significant’ visual impacts to
Slight/Moderate on VSR 10, Moderate on VSR 9
and 11 during construction stage. would be effectively reduced to Moderate at
construction stage. ‘Moderate’ Vvisual impacts on VSR
15
and 16 would be even reduced from ‘Moderate’ to Negligible during
construction stages after the implementation of LMM 3, LMM 4 and LMM 5.0 and 15 would be reduced to
Slight/Moderate at construction stage. ‘Slight/Moderate’ impacts on
VSR 16 would be reduced to Negligible/Slight at construction stage. The visual impacts on VSR 12
would be effectively reduced from ‘Moderate/Significant’ at construction stage and
‘Moderate’ at operation stage and ‘Moderate’ to
NegligibleModerate and Negligible at
construction and operation stages respectively. After
the implementation of mitigation measures, visual impacts on all VSR 4 to 8d s in both
Siu Ho Wan site, VSR 9
to 16and in Pui O sites should be eliminated
effectively
reduced during operation stages.
7.10.5 The visual impacts of some of the VSRs in both Siu Ho Wan and Pui O during construction stages would not be eliminated due to the very close proximity of VSRs to the proposed Projects and the relatively large visual scale of the development.
7.10.6 In general, the landscape and visual impacts in both Siu Ho Wan and Pui O sites would be greatly alleviated to acceptable with mitigation measures, meaning that there will be some adverse effects, but these can be eliminated, reduced or offset to a large extent by specific measures. With the implementation of specific mitigation measures, there would be no significant adverse landscape and visual effects caused by the proposed Project in Siu Ho Wan and Pui O sites.
7.11.1 In accordance with ETWB TCW No. 2/2004, WBTC No. 14/2002, ETWB TCW No. 55/2002, WBTC No. 26/99 and WBTC No. 8/2000, the agents responsible for the funding, implementation, management and maintenance of the landscape elements is identified as follows:
|
Landscape Item |
Funding |
Implementation |
Management |
Maintenance |
|
Planting within Public Utility Area e.g. WSD Water
Treatment Works Area |
WSD |
WSD |
WSD |
WSD |
|
Planting on SIMAR slopes along site boundaries of
Public Utility Areas |
WSD |
WSD |
WSD |
WSD |
|
Planting
along access roads or footpaths which are solely used by WSD |
WSD |
WSD |
WSD |
WSD |
|
Architectural Finishes |
WSD |
WSD |
WSD |
WSD |