Contract No. HY/2011/03
Hong
Kong-Zhuhai-Macao Bridge
Hong
Kong Link Road
Section
between Scenic Hill and Hong Kong Boundary Crossing Facilities
Landscape and Visual Plan
Rev.14
December 2020
Main Contractor Designer
Contents
1.3 Environmental
Permit Conditions
2.1 Landscape
and Visual Design Measures Considered
2.2 Landscape
and Visual Mitigation Measures during Construction and Operation Phases
2.3 Landscape
Design Considerations
2.4 Other
Landscape Design Considerations
3.1 Overall
Landscape Design Concept
3.2 Overall
Aesthetic Design to Highway Maintenance Area (HMA)
3.3 Tunnel
Portal at Scenic Hill
3.4 Tunnel
Portal for HAT Tunnel
3.5 Bridge
A1 and A2 of the HKLR
3.6 Roadside
Areas within the Secure Area of the HKLR
3.7 Detail
Mitigation Measures
4.1 Landscape
and Visual Design Measures
4.3 Mitigation
Measures during Detailed Design Stage
4.4 Mitigation
Measures during Construction Phase and Operation Phase
4.5 Maintenance
and Management
List of Appendices
Appendix A
¡V Mitigation Measures Plan: Mitigation Measures During Detailed Design Stage
Appendix B
¡V Mitigation Measures Plan: Mitigation Measures During Construction and
Operation Phases
Appendix D ¡V Detail Mitigation Measures Blow-up Plans during
Construction and Operation Phases
Appendix E
¡V Planting Requirements of the HKIA Approved Plant Species List (APSL)
Appendix F
¡V Scope of Works for Contract No. HY/2011/03
Appendix G
¡V Tree Preservation and Protection
Appendix H
¡V Recipient Locations of Transplanted Trees
Appendix I
¡V Maintenance Demarcation of Soft Landscape Works
Appendix J
¡V List of Landscape Resources (LRs) and Landscape Characters Areas (LCAs)
Appendix K
¡V List of Visually Sensitive Receivers (VSRs)
Appendix L
¡V Photomontages of Visually Sensitive Receivers (VSRs)
Appendix M
¡V AAHK¡¦s FEP No. FEP-01/352/2009/D
Appendix N¡V
Implementation Schedule of Mitigation Measures on Landscape & Visual Impact
List of Tables
Table 4.1: General Mitigation Measures
Table 4.2: Mitigation Measures during Detailed Design
Stage
Table
4.3: Mitigation
Measures during Construction Phase and Operation Phase
Table
4.4: Landscape
Works Schedule of Management and Maintenance Responsibilities
Table 4.5: Hard Landscape Maintenance Principles
Table 4.6: Soft Landscape Maintenance Principles
Nomenclature and Abbreviations
AAHK |
Airport Authority Hong
Kong |
ACABAS |
Appearance of Bridges and
Associated Structures |
CNAC |
China National Aviation
Corporation |
EM&A |
Environmental Monitoring
& Audit |
HKBCF HKIA |
HZMB Hong Kong Boundary
Crossing Facilities Hong Kong International
Airport |
HKLR |
HZMB Hong Kong Link Road |
HMA |
Highway Operation and
Maintenance Area |
HyD |
Highways Department |
HyD/LU HZMB LandsD |
Highways Department
Landscape Unit Hong Kong-Zhuhai-Macao
Bridge Lands Department |
LCSD |
Leisure and Cultural
Services Department |
TCSS |
Traffic Control & Surveillance
System |
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1.1.1 The
Works in Contract No. HY/2011/03 (hereunder referred as ¡§this Contract¡¨ are covered
under two designated projects, namely ¡§Hong Kong-Zhuhai-Macao Bridge Hong Kong Link
Road (HKLR)¡¨ and ¡§Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing
Facilities (HKBCF)¡¨, under Schedule 2 of the Environmental Impact Assessment
(EIA) Ordinance (Cap 499). Its construction and operation shall be governed by
the relevant Environmental Permits (EPs) issued by the Director of
Environmental Protection (DEP).
1.1.2 The
Works under this Contract mainly comprises the design and construction of the
following scopes:-
(a)
New
reclamation along the east coast of the Hong Kong International Airport (HKIA),
of approximately 23 hectares;
(b)
Tunnel SHT
from Scenic Hill to the new reclamation, of approximately 1 km in length with 3
lanes for east bound carriageway heading to HKBCF and 4 lanes for westbound
carriageway heading to the HZMB Main Bridge;
(c)
An abutment of
the viaduct portion of the HKLR at the west portal of Tunnel SHT and associated
roadworks at west portal of Tunnel SHT;
(d)
An at-grade
road on the new reclamation along the east coast of the HKIA to connect with the
HKBCF, of approximately 1.6 km along dual 3-lane carriageway with hard shoulder
for each bound;
(e)
Roadlinks between the HKBCF and the HKIA including new roads and modification
of existing roads in the HKIA, involving viaducts, at-grade roads and Tunnel
HAT;
(f)
A highway
operation and maintenance area (HMA) located on the new reclamation at south of
Dragonair Headquarters Building, including
construction of buildings, connection roads and other associated facilities;
(g)
Associated
civil, structural, building, geotechnical, marine, environmental protection,
landscaping, drainage and sewerage, tunnel and highway electrical and
mechanical works, together with installation of street lightings, traffic aids
and sign gantries, water mains and fire hydrants, provision of facilities for
installation of traffic control and surveillance system (TCSS), reprovisioning works of affected existing facilities,
implementation of transplanting, compensatory planting and protection of existing
trees, and implementation of an environmental monitoring and audit (EM&A) programme.
1.2.1 As this Contract are covered
under two designated projects, i.e. HKLR and HKBCF, the current Environmental
Permit Nos. EP-352/2009/D and EP-353/2009/K for HKLR and HKBCF were issued on 22 December 2014 and 11
April 2016 respectively. These documents are available through the EIA
Ordinance Register. Please refer to Appendix F for the respective scope
of Works under EP-352/2009/D (for HKLR) and EP-353/2009/K (for HKBCF).
Scope of Works for
Contract HY/2011/03 covered under EP-352/2009/D
(EP for HKLR)
Scope of Works for
Contract HY/2011/03 covered under EP-353/2009/K
(EP for HKLR) (Area in Pink)
1.2.2 To
facilitate AAHK¡¦s future development, AAHK has undertaken a portion of
landscape area at Kwo Lo Wan Road via Further
Environmental Permit No. FEP-01/352/2009/D issued by EPD on 29 March 2018. The
associated EM&A requirements on landscape monitoring originally required
under HyD¡¦s EP no. EP-352/2009/D would be transferred to AAHK via this FEP. A copy of FEP-01/352/2009/D issued by EPD
is attached in Appendix M.
1.2.3 AAHK has also undertaken another portion of
landscape area (including hard paving) along Tung Wing Road and Chek Lap Kok Road for the construction
of AAHK¡¦s Primary Access Road Dynamic Signs (PARDS) and Car Park Availability
Display (CPAD) system. The associated EM&A requirements on landscape
monitoring originally required under HyD¡¦s EP no. EP-352/2009/D would be transferred to AAHK under the
same FEP No. FEP-01/352/2009/D as mentioned in Para. 1.2.2 above.
1.2.4 Please refer to Appendix A and Appendix
B showing the locations of the concerned
landscape areas handed over to AAHK under Further Environmental Permit
FEP-01/352/2009/D mentioned in above Para. 1.2.2 and Para. 1.2.3.
1.3.1 According to EP, Landscape and Visual Plan should be submitted to fulfil the EP
conditions:
a)
Condition from EP No. EP-352/2009/D (EP for HKLR):
Item 2.11 Landscape and
Visual Plan
The Permit Holder shall
deposit with the Director, at least one month before the commencement of the
construction of each relevant part of the Project, three hard copies and one
electronic copy of a landscape and visual plan incorporating measures,
including aesthetic design on the viaduct, tunnel portals, at-grade roads and
reclamation and visually neutral/recessive colour scheme for construction of
offshore structures and night-time lighting control.
b) Condition from EP No. EP-353/2009/K
(EP for HKBCF):
Item 2.9 Landscape and
Visual Plan
The
Permit Holder shall deposit with the Director, at least 1 month before the
commencement of construction of
relevant part of the Project, three hard copies and one electronic copy of a
landscape and visual plan incorporating aesthetic architectural design on
buildings structures and related infrastructure of the Project, streetscape
elements, planting proposals and other measures including night-time lighting
control.
1.3.2 The overall design is based on the
Employer¡¦s Requirements, HKIP Approved Plant Species List (APSL) and the approved
EIA Report Section 14.3 Landscape and Visual
Impact Assessment. The relevant mitigation measures accordingly need to comply
with the Employer¡¦s Requirements, HKIA APSL and the approved EIA Report.
1.4.1 The Landscape and Visual Plan (LVP) for this Contract aims to illustrate the fulfilment of the mitigation
measures during the detail design stage, construction phase and operation phase
in accordance to Section 14 of the approved EIA Report and associated EM&A
Manual.
The mitigation
measures stated in the LVP are based on the following items of the approved EIA
Report:
Ø Item 14.3.3.1 Minimization and avoidance as
Mitigation Measures During Detailed Design Stage
Ø Item 14.3.3.2 Design Measures as Mitigation
Measures During Detailed Design Stage
Ø Item 14.3.3.3 Mitigation Measure / Strategies to be
applied in the Construction Phase and the Operation Phase
1.4.2 The LVP will demonstrate the relevant mitigation measures implemented under this Contract which are indicated
in the below figures:
a) Mitigation Measures during
Detailed Design Stage ¡V Drawing No. 001M
Mitigation Measures Plan: for measures stated in Approved EIA Report -
Section 14.3.3.2 (Appendix A);
b) Mitigation Measures during
Construction Phase and Operation Phase ¡V Drawing
No 002M Mitigation Measures Plan: for measures stated in Approved EIA
Report - Section 14.3.3.3 (Appendix B); and
c) Recommended Landscape and Visual Mitigation
Measures
for visually sensitive receivers (VSRs) (Appendix L).
The
proposed mitigation measures for each of the landscape resources (LRs) and landscape
character areas (LCAs) are described Tables
4.2 and 4.3 in Section 4.2.
1.4.3 With
respect to the requirements of Environmental Permit, the LVP has been
organised to present the following particulars under this Contract:
Chapter 2 ¡V Design Consideration:
-
Provides an
update of the Design Codes, Design Parameters and Assumptions.
Chapter 3 ¡V Design
Conceptual Approach:
- Provides
design descriptions of the works incorporating
mitigation measures during construction and operation phases for the
works required to construct the landscape areas including woodland buffer zone, roadside planters, maintenance access paths,
irrigation and drainage systems for landscape works.
Chapter 4 ¡V Adopted Mitigation Measures:
- The proposed mitigation measures are indicated in Table 4.2 and Table 4.3, which follow the recommended mitigation measures stated in the Approved
EIA Report.
Chapter 5 ¡V Summary
2.1.1 The design requirements for the landscape and visual mitigation measures
during detailed design stage were stated in Section 14.3 of the approved EIA
Report and Section 14.2.4 of the EM&A Manual. These mitigation measures are
considered during the detailed design stage and will be adopted during
construction as far as practicable.
2.1.2 The relevant
design concept will be discussed in Section 3 of this LVP, while the mitigation
measures during construction and operation phases will be elaborated in Section
4 of this LVP. The design measures extracted from
Section 14.3.3.2 of
the approved EIA Report are listed below for easy reference:
2.1.3
During Detailed Design
Stage:
Ø
Item 1: Roadside planting and planting along
the edge of the reclamation is proposed;
Ø Item 2:
Transplanting of mature trees in good health and amenity value where
appropriate and reinstatement of areas disturbed during construction by
compensatory hydro-seeding and planting;
Ø
Item 3: Protection measures for the trees to be
retained during construction activities;
Ø
Item 4: Optimizing the sizes and spacing of the
bridge columns;
Ø
Item 5: Fine-tuning the location of the bridge
columns to avoid visually-sensitive locations;
Ø Item 6:
Aesthetic design of the bridge form and its structural elements for HKLR, e.g.
parapet, soffit, columns, lightings and so on;
Ø Item 7:
Considering the decorative urban design elements for HKLR, e.g. decorative road
lightings;
Ø Item 8:
Maximizing new tree, shrub and other vegetation planting to compensate tree
felled and vegetation removed;
Ø Item 9:
Providing planting area around peripheral of HKLR and HKBCF for tree planting
screening effect;
Ø Item 10:
Providing salt-tolerant native trees along the planter strip at affected
seawall and newly reclaimed coastline;
Ø Item 11: For
HKBCF, providing aesthetic architectural design on the related buildings (e.g.
similar materials for PCB building facade to Airport buildings, roof planting
and subtle materials for other facilities buildings and so on), and the related
infrastructure (e.g. parapet planting and transparent cover for elevated
footbridges) to provide harmonic atmosphere of the HKBCF; (Remark: Not applicable to this Contract)
Ø Item 12:
Fine-tuning the sizes of the structural members to minimize the bulkiness of
buildings and adjustment of building arrangement to minimise
disturbance to surrounding vegetation in the HKBCF; (Remark: Not applicable to this Contract)
Ø Item 13: For
HKLR, providing aesthetic design on the viaduct, tunnel portals, at grade roads
and reclamation (e.g. subtle colour tone and slim
form for viaduct to minimize the bulkiness of the structure and to blend the
viaduct better with the background environment, featured form of tunnel
portals, roadside planting along at-grade roads and landscape berm on &
planting along edge of reclamation area) to beautify the HKLR alignment.
2.2.1 The landscape and visual design measures during construction and
operation phase extracted from Section 14.3.3.3 of the approved EIA Report are listed in below for
easy reference.
2.2.2 During Construction Phase:
Ø G1:
Grass-hydroseed
bare soil surface and stock pile areas.
Ø G2: Add
planting strip and automatic irrigation system of appropriate at some portions
of bridge or footbridge to screen bridge and traffic.
Ø G3: For HKLR, providing aesthetic design on the viaduct, tunnel portals, at-grade
roads and reclamation (e.g. subtle colour tone and
slim form for viaduct, aesthetic design of the bridge form and its structural
elements including the parapet, soffit, columns and so on and decorative urban
design elements and lightings for the HKLR; featured form of tunnel portals,
roadside planting along at-grade roads and landscape berm on & planting
along edge of reclamation area) to beautify the HKLR alignment.
Ø G4: For HKBCF, providing aesthetic architectural design on the related
buildings (e.g. similar materials for PCB building facade to Airport buildings,
roof planting and subtle materials for other facilities buildings and so on),
and the related infrastructure (e.g. parapet planting and transparent cover for
elevated footbridges) to provide harmonic atmosphere of the HKBCF (Remark:
Not applicable to this Contract)
Ø G5: Vegetation reinstatement and upgrading to disturbed areas.
Ø G6: Maximize new tree, shrub and other vegetation planting to compensate
tree felled and vegetation removed.
Ø G7: Provide planting area around peripheral of and within HKBCF and HKLR
for tree screening buffer effect.
Ø G8: Plant salt tolerant native tree and shrubs etc
along the planter strip at affected seawall.
Ø G9: Reserve of loose natural granite rocks for re-use. Provide new
coastline to adopt ¡§natural-look¡¨ by means of using armour
rocks in the form of natural rock materials and planting strip area
accommodating screen buffer to enhance ¡§natural-look¡¨ of the new coastline
Ø V1: Minimize time for construction activities during construction period.
Ø
V2: Provide screen hoarding at the
portion of the project site / works areas / storage areas near VSRs who have
close low-level views to the Project during HKLR & HKBCF construction.
2.2.3 During Operation Phase:
Ø G10: Provide proper planting maintenance on the new planting areas to
enhance the aesthetic degree.
Ø V3: Lighting design to minimize glare at night. Decorative road
lighting to be considered during detailed design stage.
2.3.1 Since
HKLR is located adjacent to the Hong Kong International Airport (HKIA) and
underneath the air-flight route, the landscape design for this Contract shall
be designed in accordance to the HKIA Approved Plant Species List (APSL) (Revision
4.0.1: October 2015) (Appendix E).
2.3.2 According
to the zoning plan of the Airport Island shown in Figure 1 of the HKIA APSL
(Revision 4.0.1: October 2015), the works areas under this Contract fall within
Zone 1, Zone 2 and Zone 3.
2.3.3 During
the detailed design stage, the landscape designs of this Contract are required
to comply with the aforesaid planting restrictions and the relevant planting
limitations are extracted below for easy reference:-
Zone 1:
Only grass and ground cover of less than
200mm in height; climbers that do not produce fleshy fruit and should be
planted in areas not exceeding 25m2 and regularly pruned shrubs that
do not produce fleshy fruit and are of less than 1.5m in height and 25m2
in area size are allowed.
NB
(It was agreed during various interface meetings between HyD,
CAD and AAHK that the height requirement for shrubs in Zone 1 and Zone 2
covered by the HKBCF and associated link road projects can be relaxed from 1.5m
to 2m in height).
Zone 2:
Climbers,
palms, cycad, trees or shrubs are acceptable only if they do not produce fleshy
fruit. As a precautionary measure,
height restriction of newly planted palms, cycad and tree is normally 5-10m,
and trees that could produce a spreading crown and/or develop into a tall
structure shall be avoided. Hence, selection of small trees is preferred as a
long-term management and maintenance approach. For all existing, planted palms,
cycad and trees, their suitability and horticultural maintenance practice will
be regularly reviewed by AAHK, and will be monitored for bird activities and
potential hazard to aircraft by AA¡¦s Wildlife Hazard Consultant. Given that the
mature size of certain existing tree species (such as Casuarina equisetifolia and Delonix regia)
is up to 10-15m, close monitoring on their bird attractiveness of these
particular trees would be carried out. Height restriction of existing and
newly-planted shrubs is 1.5m.
For initial planting, palm
/ cycad / ravenala / bamboo / tree should be in
groups of 50 individuals or fewer. The area of each tree group should not
exceed 150m2 and shrubs / climbers should be planted in areas of no more than
500m2. Routine horticultural maintenance should be carried out to
maintain vegetation groups of smaller sizes as far as practical.
For all
existing, planted palm / cycad / ravenala bamboo /
trees as well as shrubs are monitored by AA¡¦s Wildlife Hazard Consultant for
usage by birds, and by AAHK. The planted area can be no more than 500 m2
for palm / cycad / ravenala / bamboo / trees and 1,000m2
for shrubs / climbers. The linear segregation for adjacent groups of palms /
cycad / ravenala / bamboo / trees / shrubs should be
at least 50m; however, this segregation restriction can be relaxed if the
plantation is assessed as not creating significant or hazardous attraction to
birds by AA¡¦s Wildlife Hazard Consultant. Spread of tree crowns should be
pruned to less than 3m for initial planting, and 6m for mature plants on the condition
that the tree species does not produce fleshy fruits and that bird usage is monitored
by AA¡¦s Wildlife Hazard Consultant.
Zone 3:
In general, there is no restriction on the species
planted in this zone. Trees, shrubs and palms are allowed. Large trees with
complex structure encouraging birds¡¦ foraging and perching should be monitored
for bird visitation. Existing plant species with fleshy fruits should also be
monitored for bird attraction. In addition to streamline long-term management
and maintenance, planting of large groups of trees/ palms/ cycad/ ravenala that set fleshy fruits in the planting areas close
to Zone 2 should be avoided.
2.4.1 According to the HKIA APSL, trees
are not allowed for planting within Zone 1, for those landscape areas fall within
Zone 2 and Zone 3, the following constraints should be observed:-
Ø The
limitations of space afforded between the Hong Kong Link Road and the other maintenance
and access roads.
Ø The design
and aesthetics strategy approved by the ACABAS.
Ø The
existing planting structure and aesthetic of land within the HKIA lot.
Ø The
location and disposition of significant underground structures and utilities.
Ø The
limitations of space afforded between the HK Link Road and the seawall.
Ø Limited
accessibility for maintenance and waterfront access.
3.1.1 To cater the aforesaid constraints, the overall
landscape design concept aims
to achieve and resolve the constraints with the
following goals:-
Ø Develop a
localised and differentiated landscape aesthetics strategy for the project with
a strong ¡¥gateway¡¦ design theme which unifies the development.
Ø Seamlessly
blend the new development within the context of both the existing urbanised
airport fabric and the naturalised environment of Scenic Hill.
Ø
Marry with the aesthetics of
the Administration Building whilst relating to other surrounding buildings,
particularly CNAC Tower.
Ø
Consider and implement
international solutions in developing pragmatic, sensitive and sustainable
design that achieves the best social, economic and environmental fit.
Ø
Address the difficulties of site location and
microclimate.
Ø
Incorporate sustainable water management practices.
Ø
Minimise long term
maintenance implications in additional to reducing capital costs.
3.2.1 The collection
of buildings at the HMA takes on various scales, with the Administration
Building and the Workshops being the largest. The architectural design approach
for these buildings reflects a high awareness of their utilitarian nature and
functions. The connection of the 3 cities, Hong Kong, Zhuhai, and Macau is
symbolized by 3 feature walls apparently slicing through the Administration
Building, providing accents and articulation for a long massive building.
3.2.2 The
building mass organized around these 3 walls is simply clad in curtain wall or
louver panels, an expression responsive to the CNAC/Dragonair
Tower further north of the HMA. The setback at ground floor level not only
breaks down the massing, but also provides a much needed covered service
footpath for all the plant rooms.
3.2.3 This
simplicity in form is also applied to the entrance canopy, car park covers, and
etc. Simple lines, walls and roof
slabs express the utilitarian nature of the Workshop Building, while the
articulation helps bring down the scale. Finishes and materials on building
exterior are generally be sprayed textured coating in a combination of cream
and earth tones, in appropriate patterns, to enhance a visual harmony between
the entire HMA and the green surroundings.
3.3.1 Given the relative modest scale and gentle
gradient of Scenic Hill, the building mass would inevitably be relatively
imposing. Unfortunately, the volume and configuration of the building is
largely determined by the required building services accommodation, and restricted
by the lot boundary stipulated in the project brief.
3.3.2 The building
configuration has been made as compact as possible in order to achieve a more
pleasant visual integration between Scenic Hill and the building mass. The architectural articulation on the
facades, the choice of finishes and colours are conscious efforts in further
breaking down the building scale.
3.3.3 Design of the West
Portal Ventilation Building has undergone the
vetting process by the Design Advisory Panel of ArchSD.
The building design has been developed in the following aspects:
Ø
Optimized building
height and maximized greening façade so that the building will be visually better integrated with its
surroundings;
Ø
Horizontal screen feature wrap dynamically
around the main building bulk, soften the building and suggest a light weight
outlook
Ø
Different colour
shades at the horizontal screen to imitate complex shadow and line
relationship, such that the building is more dissolved into the green knoll
when viewing at a far distance.
3.4.1 The design of the east
and west portals of HAT is similar to that of the east portal of Tunnel
SHT. The formation of the tunnel
portal and approach will be by retaining walls with fair face concrete and
ribbed concrete finish in a pattern. The general colour scheme and textures of
finishes are in line with those used at the HMA.
3.5.1 The proposed Bridges A1
and A2 under this Contract have been designed with minimal visual impact to the
surrounding environment.
3.5.2 Bridge A1 forms part of
the re-aligned East Coast Road with 4 continuous span (25m-35m-35m-25m) to span
over a roundabout. It is designed as a reinforced concrete deck which is
supported on single monolithic piers at intermediate supports and on mechanical
bearings at both ends.
3.5.3 Bridge A1 sits within
Zone 1 of the HKIA Approved Plant Species List. There are significant
restrictions in terms of the amount and type of greening that can be carried
out in this area.
3.5.4 Bridge A2, it is an
elevated viaduct proposed to be bifurcated from the existing East Coast Road
ramp structure and link with the Airport Road. It composes of two 4-span continuous deck
structures carrying one traffic lane with hard shoulders at both sides. The
span arrangements of the two decks are 35-45-45-35m and 35-47-65-50m.
3.5.5 Both decks are designed
as a pre-stressed deck, most of the piers are monolithically connected to the
deck soffit to minimize the number of bearings and create a flush profile.
Concrete rib profile is provided at the piers and abutments as before to create
similar appearance as compared to the existing bridge structures nearby.
3.5.6 Bridge A2 sits within
Zone 2 of the HKIA Approved Plant Species List. There are limitations in terms
of the amount and type of greening that can be carried out in this area, which
it currently devoid of plant material and includes just grass surfaces and
occasional decorative feature shrubs. Further screen tree planting has been
proposed where possible to meet the EIA requirements in this regard.
3.5.7 The details of
mitigation measures for minimization and avoidance of potential impacts and the
design measures as mitigation measures on the proposed Bridges A1 and A2 are
incorporated in Section 4.3 Table 4.2 ¡V Items 4 to 6.
3.6.1 These newly formed
areas on reclaimed land are essentially planted for visual
amenity where thin strips of land are contained as both a central median and
between the road margin and the security fence. This planting are required to
conform to the requirements of the HKIA APSL and further requirements noted by
AAHK regarding flight safety, whilst improving the visual outlook of the road
and encouraging sea views. The margins are generally drained away from the
roadside in order to act as natural swales, encouraging storm water to slow and
be absorbed within the planter areas. Planting design varies over the length of
the road according to the parameters set by AAHK however it is designed to fit
into the overall theme and respond to viewing from vehicles travelling at high
speed.
3.7.1 General mitigation
measures for minimization and avoidance of potential impacts
are incorporated and presented below Section
4 in tabulated form.
4.1.1 Corresponding mitigation measures
are proposed to avoid and reduce the identified impacts. Furthermore,
mitigation measures to remedy and compensate unavoidable impacts will be
proposed to minimize the magnitude of change caused to sensitive receivers
during detailed design stage.
Table
4.1 General Mitigation Measures
Item |
Recommended
Mitigation Measures as stated in the Approved EIA Report ¡V Section 14.3.3.1 |
Mitigation Measures Adopted in the Design |
Compliance with EIA Requirement (Y / N) |
1 |
Minimize the
footprint of project and that the quantity of landscape character units and
landscape resources affected |
The project
footprint has been adopted according to gazette. Impacts to valuable
landscape resources including trees and natural rocks have been have been
avoided where possible, protected and targeted for transplantation and reuse. |
Y |
2 |
Minimize
temporary works areas for construction works |
All temporary works area for
construction works will always keep to minimum required. The proposed extent
of temporary works area would also be reviewed and approved by relevant
parties as to ensure the visual and environmental impact to the public is kept
to minimum. |
Y |
3 |
Undertaking good
site practices by applying hydroseeding on temporary stockpiles and
reclamation areas |
Good site practices such as
hydroseeding will be implemented on temporary stockpiles, where applicable to
actual site conditions. For instance, hydroseeding was applied to suppress
the dust from ground after site clearance at the site formation area at West
Portal of SHT Tunnels. |
Y |
4 |
Conservation of
topsoil for reuse |
All soil including the top soil is temporarily stockpiled for future
reclamation and surcharging works. Good quality existing topsoil shall be reused on the project. Poor
quality, uncontaminated soil may be treated to improve its quality before
re-use. |
Y |
5 |
Waste limitation by recycling of felled trees into
woodchip mulch for use in landscaped areas |
Part of the felled
trees was transported to tree recycling workshop. Felled
trees, clear dimensional and untreated wood shall be recycled to mulching
materials and composting material. Mulching shall be provided to all planting
areas at 50-70mm thick. |
Y |
4.2.1 List
of the identified Landscape Resources (LRs) and Landscape Characters Areas
(LCAs) and Visually Sensitive Receivers (VSRs) extracted from EIA report are
summarized in Appendix J and Appendix K for easy
reference.
4.2.2 With
reference to the approved EIA Report, 12 out of 32 identified Visually Sensitive
receivers (VSRs) are relevant to this Project (see Key Plan of VSRs in Appendix
L) Hence, only relevant photomontages with mitigation measures for
these 12 VSRs are shown in Appendix L.
4.2.3 Implementation
of mitigation measures for each EP conditions under this Project are further
elaborated in Section 4.3 and 4.4.
The identification of the landscape and visual
impacts has highlighted the potential primary and indirect sources of impacts
and their magnitude of change caused to sensitive receivers. Some design
measures will be developed during detailed design stage. Design mitigation measures are
incorporated in the following Table 4.2. Please refer to Appendix A for the
location of mitigation measures implemented on this project.
Table
4.2 ¡V Mitigation Measures during Detailed Design Stage
Mitigation Code |
Recommended
Mitigation Measures as stated in the Approved EIA Report ¡V Section 14.3.3.2 |
Mitigation Measures Adopted in the Design |
Related document and Reference Drawing no. |
Mitigation
Measure of impact of LR, LCA, and VSR |
Item
1 |
Roadside planting
and planting along the edge of the reclamation is proposed; |
Roadside
planting and planting along the edge of the reclamation is proposed where
feasible. |
Appendix C
¡V Mitigation Measures during Detailed Design Stage |
Design
Measures for LR and LCA |
LR2, LR5, LR8, LR9, LR15, LCA4, LCA6, LCA12,
LCA13 |
||||
Design
Measures for VSR |
||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
||||
Item
2 |
Transplanting of
mature trees in good health and amenity value where appropriate and
reinstatement of areas disturbed during construction by compensatory
hydro-seeding and planting; |
A
specialist subcontractor was hired to carry out all landscaping and arboriculture
works for ensuring the health and amenity value of the tree is properly
maintained, and the reinstatement is carried out at good standard.
Compensatory hydro-seeding and planting will be provided during construction,
where applicable to site conditions. |
Appendix G ¡V Tree Preservation & Protection Recipient Locations
of Transplanted Trees Appendix C
¡V Mitigation Measures during Detailed Design
Stage |
Design
Measures for LR and LCA |
LR3, LR9, LCA4, LCA12 |
||||
Design
Measures for VSR |
||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
||||
Item
3 |
Protection measures
for the trees to be retained during construction activities |
Preservation and protection of trees will be
implemented and follow the site procedure for protecting retained trees
within and in the vicinity of the works areas. |
Appendix G ¡V Tree Preservation & Protection Appendix C
¡V Mitigation Measures during Detailed Design
Stage |
Design
Measures for LR and LCA |
LR3, LR9, LCA4, LCA6 |
||||
Design
Measures for VSR |
||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
||||
Item
4 |
Optimizing the
sizes and spacing of the bridge columns |
Bridge
A1 ¡V The two parallel deck structures at Bridge A1 was combined to a wide
multi-box deck which reduces the total number of piers by half. The pier size was optimized to provide
sufficient space for bearings and shear keys. Bridge
A2 ¡V The pier spacing was optimized with a maximum intermediate span of 63m,
which is close to the maximum span that a 2.5m deep box section can
take. A reduced pier section with
flared top was adopted to minimise the pier size as far as possible. |
Appendix C
¡V Mitigation Measures during Detailed Design
Stage |
Design
Measures for LR and LCA |
LR5, LR9, LCA4, LCA6 |
||||
Design
Measures for VSR |
||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
Item
5 |
Fine-tuning the
location of the bridge columns to avoid visually-sensitive locations |
Both Bridge A1 and A2 were located at existing land
which was far away from the new coastline. Both decks were not situated at visually
sensitive locations. |
Appendix C
¡V Mitigation Measures during Detailed Design
Stage |
Design
Measures for LR and LCA |
LR5, LR9, LCA4, LCA6 |
||||
Design
Measures for VSR |
||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
||||
Item
6 |
Aesthetic design of
the bridge form and its structural elements for HKLR, e.g. parapet, soffit,
columns, lightings and so on. |
The bridge layout including the deck profile, parapet
shape and concrete rib features at piers and ramp structures were referenced
from existing vehicular bridges nearby.
Standard highway lightings were used to ensure they match with the
existing lightings in the vicinity. |
Appendix C
¡V Mitigation Measures during Detailed Design
Stage |
Design
Measures for LR and LCA |
LR5, LR9, LCA4, LCA6 |
||||
Design
Measures for VSR |
||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
||||
Item
7 |
Considering the
decorative urban design elements for HKLR, e.g. decorative road lightings. |
The
non-glare materials will be used for highways and associated structures in
order to provide visual relief and blend in well with the surrounding
environment. Road lighting will be provided in general along the central
divider of HKLR to provide lighting to both carriageways. |
Appendix C
¡V Mitigation Measures during Detailed Design
Stage |
Design
Measures for LR and LCA |
LR5, LR9, LCA6 |
||||
Design
Measures for VSR |
||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
Item
8 |
Maximizing new
tree, shrub, and other vegetation planting to compensate tree felled and
vegetation removed; |
The
overall planting works has been designed in accordance with the HKIA APSL and
the constraints therein. It has been designed to maximize the planting of
trees and shrubs in all landscape areas. Compensatory
tree planting is in accordance with the approved tree removal applications
and the follow-on discussions with the relevant maintenance authorities, e.g.
AAHK, LCSD & HyD/LU. Tree
removal applications were approved by LandsD / DLO
for the following:- -
TRA-01 for Tree Areas 1-3 -
TRA-02 for Tree Areas 4-17 The
tree removal application TRA-04 for whole site was submitted on 27 April 2019. |
Appendix C ¡V Mitigation Measures
during Construction and Operation Phases |
Design
Measures for LR and LCA |
||||||||||||||||
LR5, LR9, LR15, LCA4, LCA6, LCA12, LCA13 |
||||||||||||||||||||
Design
Measures for VSR |
||||||||||||||||||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
||||||||||||||||||||
Item
9 |
Providing
planting area around peripheral of HKLR and HKBCF for tree planting screening
effect; |
All opportunities to maximise shrubs / vegetation
planting have been adopted along the central median and edges of HKLR within
closed area. The Highway Operation and Maintenance Area sits
within an area of constructed natural woodland which will develop to fully
screen the compound. The
road margins are greened in all areas and tree planting maximized. The seawall amenity area along the edge of
the reclamation also maximizes use of tree and shrub planting in accordance
with the HKIA APSL. |
Appendix C
¡V Mitigation Measures during Detailed Design
Stage
|
Design
Measures for LR and LCA |
||||||||||||||||
LR2, LR5, LR8, LR9, LR11, LR15, LCA4, LCA6,
LCA12, LCA13 |
||||||||||||||||||||
Design
Measures for VSR |
||||||||||||||||||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
||||||||||||||||||||
Item
10 |
Providing
salt-tolerant native trees along the planter strip at affected seawall and
newly reclaimed coastline. |
Specific tree species have been selected for
resistance to salt spray for planting along newly reclaimed coastline, including
the following:
|
Appendix C
¡V Mitigation Measures during Detailed Design
Stage
|
Design
Measures for LR and LCA |
||||||||||||||||
LR2, LR4, LR8, LR9, LCA3, LCA6, LCA13 |
||||||||||||||||||||
Design
Measures for VSR |
||||||||||||||||||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
||||||||||||||||||||
Item 11 |
For HKBCF, providing aesthetic architectural
design on the related buildings (e.g. similar materials for PCB building
façade to Airport buildings, roof planting and subtle materials for other
facilities buildings and so on), and the related infrastructure (e.g. parapet
planting and transparent cover for the elevated footbridges) to provide
harmonic atmosphere of the HKBCF. |
Not Applicable to this Contract. |
Not Applicable to this Contract. |
Not Applicable to this Contract. |
||||||||||||||||
Item 12 |
Fine-tuning the sizes of the structural members to
minimize the bulkiness of the buildings and adjustment arrangement to
minimize disturbance to surrounding vegetation in the HKBCF. |
Not Applicable to this Contract. |
Not Applicable to this Contract. |
Not Applicable to this Contract. |
||||||||||||||||
Item
13 |
For HKLR,
providing aesthetic design on the viaduct, tunnel portals, at-grade roads and
reclamation (e.g. subtle color tone and slim form
for viaduct to minimize the bulkiness of the structure and to blend the
viaduct better with the background environment, featured form of tunnel
portals, roadside planting along at-grade roads and landscape berm on &
planting along edge of reclamation area) to beautify the HKLR alignment. |
Aesthetic design on the tunnel portals: The building configuration of the West Portal of
Scenic Hill Tunnel (SHT) has been made as compact as possible in order to
achieve a more pleasant visual integration between Scenic Hill and the
building mass. The architectural articulation on the facades, the choice of
finishes and colours are conscious efforts in further breaking down the
building scale. Details of the building design are described in Section 3.3 above. Profile of the SHT East Portal, east and west
portals of HAT are similar and are kept very simple. Retaining walls with
fair face and ribbed concrete finish in a pattern. Design of the portals are
vetted and accepted by the ACABAS. Aesthetic design on the viaduct, at-grade road and
reclamation shall be referred to Section 3.5 and 3.6 respectively. Roadside planting along at-grade roads and edge of
reclamation area are provided to beautify the HKLR alignment. |
Appendix C
¡V Mitigation Measures during Detailed Design
Stage |
Design
Measures for LR and LCA |
||||||||||||||||
LR5, LR9, LCA4, LCA6, LCA12, LCA13 |
||||||||||||||||||||
Design Measures
for VSR |
||||||||||||||||||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
Implementation details of mitigation measure during
Construction Phase and Operation Phase are summarized in Table 4.3 and please
refer to Appendix B for the location of
mitigation measures implemented on this project.
Table
4.3 - Mitigation Measures during Construction Phase and Operation Phase
|
Recommended Mitigation Measures as
stated in the Approved EIA Report ¡V Section 14.3.3.3 |
Mitigation Measures Adopted in the
Design |
Mitigation
Measures Adopted in the Design Reference Drawing No. |
Recommended
Mitigation Measure of Residual impact of LR, LCA, and VSR |
G1 |
Grass-hydroseed bare soil surface and stock pile
areas. |
Good site practices such as hydroseeding will be
implemented on temporary stockpiles and bare soil surface (such as temporary
cut slopes), where applicable to actual site conditions. For instance,
hydroseeding was applied to suppress the dust from ground after site
clearance at the site formation area at West Portal of SHT Tunnels. |
Appendix D ¡V Photomontages of Mitigation Measures
during Construction and Operation Phases |
Construction
Phase of LR and LCA: |
LR2,
LR3, LR8, LR9, LCA4, LCA5, LCA6 |
||||
Construction
Phase of VSR |
||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
||||
G2 |
Add planting strip and automatic irrigation system of
appropriate at some portions of bridge or footbridge to screen bridge and
traffic. |
Planting is to be
undertaken in accordance with HKIA APSL and the requirements therein. Bridge
A1 lies within zone 1 and tree planting is not possible in this zone.
Furthermore, adequate space does not exist for such planting. Bridge A2 and the
footbridge are within Zone 2 and restrictions apply to the quantity and
location of planting. Grass,
shrubs, palms are planted beneath Bridge A2 to maximize the planting area. |
Appendix D ¡V Photomontages of Mitigation Measures
during Construction and Operation Phases |
Construction
Phase of LR and LCA: |
LCA4,
LCA6 |
||||
Construction
Phase of VSR: |
||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
||||
G3 |
For HKLR, providing aesthetic design on the viaduct,
tunnel portals, at-grade roads and reclamation (e.g. subtle colour tone and
slim form for viaduct, aesthetic design of the bridge form and its structural
elements including the parapet, soffit, columns and so on and decorative
urban design elements and lightings for the HKLR; featured form of tunnel
portals, roadside planting along at-grade roads and landscape berm on &
planting along edge of reclamation area) to beautiful the HKLR alignment. |
Roadside planting is maximised in all areas of HKLR
in accordance with HKIA APSL. Landscape berms and screen planting are
provided in Zones 2 and 3 in accordance with HKIA APSL. Grass and groundcovers in Zone 1 are also
planted in accordance with HKIA APSL. The building configuration
of the West Portal of SHT has been made as compact as possible to achieve a
more pleasant visual integration between Scenic Hill and the building mass.
The architectural articulation on the facades, the choice of finishes and
colours are conscious efforts in breaking down the building scale. Landscape berms are also
provided along the edge of reclamation area providing better screening. |
Appendix D ¡V Photomontages of Mitigation Measures
during Construction and Operation Phases
|
Construction
Phase of LR and LCA: |
LR13,
LCA1, LCA2, LCA8 |
||||
Construction
Phase of VSR: |
||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
||||
G4 |
For HKBCF,
providing aesthetic architectural design on the related buildings (e.g.
similar materials for PCB building facade to Airport buildings, roof planting
and subtle materials for other facilities buildings and so on), and the
related infrastructure (e.g. parapet planting and transparent cover for
elevated footbridges) to provide harmonic atmosphere of the HKBCF (see Figure
14.3.1 for example) |
Not
Applicable to this Contract. |
Not Applicable to this Contract. |
Not Applicable to this Contract. |
G5 |
Vegetation reinstatement and upgrading to disturbed
areas. |
All disturbed landscape areas of this Contract are
reinstated in accordance with HKIA APSL with hydroseeding / turfing and
planting to the satisfaction of AAHK. Compensatory trees will be
provided for all the felled trees within both AAHK land and Government
land. Please refer to the below
Item G6 for further details. |
Appendix D ¡V Mitigation Measures during Construction
and Operation Phases |
Construction
Phase of LR and LCA: |
LR2,
LR3, LR9, LCA5, LCA6 |
||||
Construction
Phase of VSR: |
||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
||||
G6 |
Maximize new tree, shrub and other vegetation
planting to compensate tree felled and vegetation removed. |
The
overall planting works has been designed in accordance with the HKIA APSL and
the constraints therein. It has been designed to maximize the planting of
trees and shrubs in all landscape areas. Compensatory
tree planting is in accordance with the approved tree removal applications
and the follow-on discussions with the relevant maintenance authorities, e.g.
AAHK, LCSD & HyD/LU. Tree
removal applications were approved by LandsD / DLO
for the following:- -
TRA-01 for Tree Areas 1-3 -
TRA-02 for Tree Areas 4-17 The tree removal application TRA-04 for whole site was submitted on 27
April 2019. |
Appendix D ¡V Mitigation Measures during Construction
and Operation Phases |
Construction
Phase of LR and LCA: |
LR2,
LR3, LR8, LR9, LCA4, LCA5, LCA6, |
||||
Construction
Phase of VSR: |
||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
G7 |
Provide planting area around peripheral of and within
HKBCF and HKLR for tree screening buffer effect. |
All opportunities to maximise shrubs / vegetation
planting have been adopted along the central median and edges of HKLR within
closed area. The Highway Operation and Maintenance Area sits
within an area of constructed natural woodland which will develop to fully
screen the compound. The
road margins are greened in all areas and tree planting maximized. The seawall amenity area along the edge of
the reclamation also maximizes use of trees and shrubs planting in accordance
with the HKIA APSL. |
Appendix D ¡V Mitigation Measures during Construction
and Operation Phases |
Construction
Phase of LR and LCA: |
||||||||||||||||
LR2,
LR9, LCA3, LCA5 |
||||||||||||||||||||
Construction
Phase of VSR: |
||||||||||||||||||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
||||||||||||||||||||
G8 |
Plant salt tolerant native tree and shrubs etc along
the planter strip at affected seawall . |
Specific trees have been selected for resistance to
salt spray for planting along newly reclaimed coastline, including the
following:
|
Appendix D ¡V Mitigation Measures during Construction
and Operation Phases |
Construction
Phase of LR and LCA: |
||||||||||||||||
LR2,
LR8 |
||||||||||||||||||||
Construction
Phase of VSR: |
||||||||||||||||||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
||||||||||||||||||||
G9 |
Reserve of loose natural granite rocks for
re-use. Provide new coastline to adopt ¡§natural-look¡¨ by means of using
armour rocks in the form of natural rock materials and planting strip area
accommodating screen buffer to enhance ¡§natural-look¡¨ of the new coastline (see
Figure 14.4.2 for example) |
Natural rocks are removed from the existing coastline
and stockpiled. These natural rock materials are to be reused in the seawall to provide a ¡§natural-look¡¨ of the new coastline. |
Appendix D ¡V Mitigation Measures during Construction
and Operation Phases |
Construction
Phase of LR and LCA: |
||||||||||||||||
LR2,
LCA3 |
||||||||||||||||||||
Construction
Phase of VSR: |
||||||||||||||||||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
||||||||||||||||||||
Mitigate Visual Impacts |
||||||||||||||||||||
V1 |
Minimize time for construction activities during
construction period. |
Close monitoring on progress, well-planned for the
works and provide sufficient resources to ensure the construction period is
kept to minimum. |
|
Construction
Phase of VSR: |
||||||||||||||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
||||||||||||||||||||
V2 |
Provide screen hoarding at the portion of the project
site / works areas / storage areas near VSRs who have close low-level views
to the Project during HKLR & HKBCF construction. |
Decorated hoarding will be erected at the works areas
and temporary storage areas. |
Appendix D ¡V Mitigation Measures during Construction
and Operation Phases |
Construction
Phase of VSR: |
||||||||||||||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17,
VSR18 |
||||||||||||||||||||
Mitigate Both Landscape and Visual impacts |
||||||||||||||||||||
G10 |
Provide proper planting maintenance on the new
planting areas to enhance the aesthetic degree. |
All planted areas at HKLR will be handed over to the
relevant maintenance authorities following agreement of the design and
maintenance requirements and procedures. |
Appendix D ¡V Mitigation Measures during Construction
and Operation Phases Appendix I
¡V Maintenance Authorities for Soft Landscape Works |
Operation
Phase of LR and LCA: |
||||||||||||||||
LR2,
LR3, LR8, LR9, LCA4, LCA5, LCA6 |
||||||||||||||||||||
Operation
Phase of VSR: |
||||||||||||||||||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17, VSR18 |
||||||||||||||||||||
V3 |
Lighting design to minimize glare at night.
Decorative road lighting to be considered during detailed design stage. |
The non-glare materials will be used for highways
and associated structures in order to provide visual relief and blend in well
with the surrounding environment. Road lighting will be provided in general
along the central divider of HKLR to provide lighting to both carriageways.
No decorative road lightings are specified in Employer¡¦s Requirements. |
Appendix D ¡V Mitigation Measures during Construction
and Operation Phases |
Operation
Phase of VSR: |
||||||||||||||||
VSR6, VSR7, VSR8, VSR9, VSR10, VSR11, VSR12, VSR13, VSR14, VSR15, VSR17,
VSR18 |
4.5.1
As
specified in Section 14.2.10 of the EM&A Manual regarding to the Long Term
Management, the planting works shall be monitored during the first 10 years of
the operation phase of the Project.
4.5.2
The
Environmental Teams engaged by individual contractors of HKLR will be
responsible for the landscape and visual monitoring works as listed in the
monitoring programme in Table 14.1 of the EM&A Manual during construction
and establishment period. For trees to be planted by the contractors to be
engaged by HKLR project under mitigation measure G6 and G8 in referring above
section, the monitoring responsibilities will be taken up by the HKLR¡¦s
landscape contractor during construction and establishment period. The
landscape and visual monitoring works, including those by the Environmental
Team under this project and those engaged landscape contractor shall make
reference to this LVP once this LVP is endorsed by PlanD/EPD.
For reporting and submission on landscape and visual monitoring, the ET will
submit their inspection report to IEC for countersign at bi-weekly during
construction period and bi-monthly basis during establishment period
accordingly.
4.5.3
For
the tree planting works to be implemented by this project, the Resident Site
Staff (RSS) will be responsible for supervision and acceptance of the tree
planting works, while the RSS of HKLR will be responsible for providing
information on specifications of tree planting works which will ensure that the
works will meet the requirements of this LVP.
4.5.4 After
the establishment period, the monitoring of planting works in the remaining 9
years of the operation phase of the Project will be taken up by the HKLR MOM
contractor.
4.5.5 The
schedule of management and maintenance responsibilities for landscape works is
shown in Table 4.4 to identify the long-term management and maintenance
responsibilities after the establishment period. Such arrangement has been
included in the overall Management and Maintenance Schedule for the Project,
which has been agreed by the Project proponent.
Table
4.4 - Landscape Works Schedule of Management and Maintenance Responsibilities
Item |
Detailed Description |
Management Authority |
Maintenance Agent |
Hard Landscape |
|||
1 |
Paving
works |
HyD (Within Gov. Land) or AAHK (Within AAHK Land) |
HyD or AAHK |
2 |
Street
furniture |
HyD (Within Gov. Land) or AAHK (Within AAHK Land) |
HyD or AAHK |
3 |
At-grade
planter |
HyD (Within Gov. Land) or AAHK (Within AAHK Land) |
HyD or AAHK |
4 |
At-grade irrigation
system |
LCSD |
EMSD |
5 |
Irrigation system for Roof Greening |
Respective User of Buidlings |
HyD |
Soft Landscape |
|||
1 |
At-grade
road side planting works (trees, shrubs, groundcovers, turf and hydroseeding) |
LCSD (Within Gov. Land) or AAHK (Within AAHK Land) |
LCSD or AAHK |
2 |
Roof Greening |
Respective
User of Buildings |
HyD |
3 |
Planting
on SIMAR slopes |
HyD |
HyD |
4 |
At-grade planting works along HKLR |
HyD |
HyD |
5 |
At-grade planting works within Tunnel Area |
TD |
TD |
4.5.6 A
full Operations and Maintenance (O&M) Manual will be prepared describing in
detail all routine and periodic maintenance inspections and operations to be
carried out by the O&M agent and/or his contractors. Typical operations and
scheduling are illustrated in Table 4.5 and Table 4.6, zoning plan for HKIA APSL
can be found in Appendix E.
Table
4.5 - Hard Landscape Maintenance Principle
Irrigation |
|
Operation |
Oversee
system and adjust timers as required |
Adjustment |
Adjust
valve water flow rates in field twice a year March and October |
Repairing |
Repair
and replace fittings and pipework as required |
Hard Paving |
|
Repair |
Check and maintain all
paving and repair as required |
Clear |
Remove debris from drains
twice a year and routinely check monthly and after storms |
Table
4.6 - Soft Landscape Maintenance Principles
Planting |
|
Watering |
Watering
to all plantings to ensure satisfactory growth and health (manual and
automatic irrigation) |
Fertilizing |
Twice
yearly November and March with emphasis on March application |
Fungicide/Insecticide |
Spray
as necessary or 3 times a year with approved non-toxic pesticides |
Weeding |
Use
selective herbicide to reduce maintenance costs as required |
Securing |
Adjust
tree stakes, guys and ties as required for safety and avoid chaffing of bark |
Repairing |
After
exceptional weather condition replace dead plants, repair damaged plants, bed
in all plants that have blown over, firm up all other plants and immediately
thereafter, remove dead plants and plant debris from the site |
Litter
Removal |
Remove
all litter and debris |
Pruning/ Shrubs/ Groundcovers |
Prune
shrubs and ground covers twice a year in March and November in accordance
with HKIA APSL (Revision 4.0.1: October 2015) for respective zones (i.e. Zone 1 or Zone 2) |
Pruning
Trees |
Prune
trees overhanging branches in accordance with HKIA APSL (Revision 4.0.1:
October 2015) for Zone 2, monthly
and as required for safety to minimize usage by birds |
Mowing |
Mow
grass twice a year in March and October in accordance with HKIA APSL
(Revision 4.0.1: October 2015) for respective zones (i.e. Zone 1 or Zone 2) |
Tree
Risk Assessment |
Undertake
Tree Risk Assessment in accordance with the latest edition of Guidelines for
Tree Risk Assessment and Management Arrangement promulgated by Greening,
Landscape and Tree Management Section of Development Bureau. |
5.1.1 This
LVP submission is prepared in fulfilment of Condition 2.11 of EP-352/2009/D
(Covering Hong Kong Link Road between Scenic Hill Section to BCF) and Condition
2.9 of EP-353/2009/K (Covering the associated road link between HKBCF to HKLR and
the Airport).
5.1.2 The HKLR Project mainly involves the
construction of 1.1 km of tunnel at Scenic Hill, 23 ha reclamation land along
eastern coast of Airport Island to form new Hong Kong Link Road between Scenic
Hill to HKBCF and associated roadlinks between
HKBCF to HKLR and the Airport .
5.1.3 All relevant design measures listed in Section
14.3.3.2 of the approved EIA Report (Register No.: AEIAR-144/2009 and
AEIAR-145/2009) and Section 14.2.4 of the EM&A Manual have been considered
in the detailed design stage. These measures have been incorporated into the
landscape design as far as practicable.
5.1.4 Since HKLR is located underneath the air-flight
route, the planting species shall comply with the planting restrictions in
respective Zones of HKIA as stipulated in HKIA APSL (Revision 4.0.1: October
2015).
5.1.5 To minimize potential landscape and visual
impact, other than maximizing greening opportunities, aesthetic architectural
design on all above-ground structures to provide a harmonized effect on HKLR, eastern
coast line and the adjacent Airport Island is the key design consideration.
5.1.6 Landscape
and visual mitigation measures for construction and operation phases as recommended
in Section 14.3.3.3 of the approved EIA Report and Section 14.2.5 of the
EM&A Manual will also adopted as far as possible. Implementation details of
mitigation measures relevant to the HKLR Project are described in this LVP
submission.