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.15
August 2022
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
Appendix
O ¡V AAHK¡¦s FEP No. FEP-02/352/2009/D
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 On the other
hand, AAHK has also undertaken another portion of landscape area along Tung Wing
Road and Chek Lap Kok Road under AAHK¡¦s proposed STT No. CX 2851. The remaining
obligations on landscape monitoring of HyD¡¦s Environmental Permit
EP-352/2009/D, including i)
Reinstatement of the landscape works in accordance with the LVP of HyD¡¦s HKLR
project deposited with DEP under Condition 2.11 of the EP No. EP-352/2009/D;
and ii) 1-year establishment works and 10-year monitoring works for the
landscape works within the STT site, as stipulated un section 14.2 of the
EM&A Manual of HyD¡¦s HKLR project EP No. EP-352/2009/D would be transferred
to AAHK under FEP-02/352/2009/D.
1.2.5 Please refer to Appendix A and Appendix B showing the locations of the concerned landscape areas
handed over AAHK under Further Environmental Permit FEP-01/352/2009/D and
FEP-02/352/2009/D mentioned in above Para. 1.2.2, 1.2.3. and 1.2.4
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 Note 1: A total of 20 trees were planted by HyD's
contractor at the roadside of Kwo Lo Wan Road and Airport Road (area
maintained by AAHK) to satisfy the proposed landscape mitigation measures G6
as described in Table 4.3. (Drawing 4809-LVP-G6-001 refers)
Further to the discussion between HyD and AAHK in
November 2021, AAHK would like to have better quality of the trees planted at
the concerned area and required HyD's contractor to remove the 20 nos. of
planted trees. AAHK would consider to provide alternative landscaping works
over the concerned area which shall be in line with their overall landscape
design and would maintain the landscape in accordance with AAHK standard and
policy. AAHK planted 20 nos. of Tabebuia Chrysantha in
the planter next to Kwo Lo Wan Road and there is no adverse landscape and
visual impact to Kwo Lo Wan Road as a result of the proposed deletion of the
20 nos. of trees. |
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 Appendix H 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 Note 1: A total of 20 trees were planted by HyD's
contractor at the roadside of Kwo Lo Wan Road and Airport Road (area
maintained by AAHK) to satisfy the proposed landscape mitigation measures G6
as described in Table 4.3. (Drawing 4809-LVP-G6-001 refers)
Further to the discussion between HyD and
AAHK in November 2021, AAHK would like to have better quality of the trees
planted at the concerned area and required HyD's contractor to remove the 20
nos. of planted trees. AAHK would consider to provide alternative landscaping
works over the concerned area which shall be in line with their overall
landscape design and would maintain the landscape in accordance with AAHK
standard and policy. AAHK planted 20 nos. of Tabebuia
Chrysantha in the planter next to Kwo Lo Wan Road and there is no adverse
landscape and visual impact to Kwo Lo Wan Road as a result of the proposed
deletion of the 20 nos. of trees. |
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 Note 1: A total of 20 trees were planted by HyD's
contractor at the roadside of Kwo Lo Wan Road and Airport Road (area
maintained by AAHK) to satisfy the proposed landscape mitigation measures G6
as described in Table 4.3. (Drawing 4809-LVP-G6-001 refers)
Further to the discussion between HyD and AAHK in
November 2021, AAHK would like to have better quality of the trees planted at
the concerned area and required HyD's contractor to remove the 20 nos. of
planted trees. AAHK would consider to provide alternative landscaping works
over the concerned area which shall be in line with their overall landscape
design and would maintain the landscape in accordance with AAHK standard and
policy. AAHK
planted 20 nos. of Tabebuia Chrysantha in the planter next to Kwo Lo Wan Road
and there is no adverse landscape and visual impact to Kwo Lo Wan Road as a
result of the proposed deletion of the 20 nos. of trees. |
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.
Appendix
B: Mitigation
Measures Plan: Mitigation Measures During Construction and Operation Phases
Appendix
C: Detail Mitigation
Measures Blow-up Plans During Detailed Design Stage and Compensation Plans
Appendix
D: Detail
Mitigation Measures Blow-up Plans During Construction and Operation Phases
Appendix
E: Planting Requirements of the HKIA Approved Plant Species List
(Note: The ¡§Hong Kong International Airport Approved Plant Species List¡¨ is provided for general reference only, and this does not form part of the Environmental Permit EP-352/2009/D and it may be updated under separate forum)
Appendix
F: Scope of Works for Contract No HY/2011/03
Appendix
G: Tree Preservation and Protection
Appendix
H: Recipient
Locations of Transplanted Trees
Appendix
I: Maintenance Plan
Appendix
J: List of Identified Landscape Resources (LRs) and Landscape Character Areas
(LCAs)
Appendix
K: List
of Identified Visually
Sensitive Receivers (VSRs)
Appendix
L: Photomontages of Visually Sensitive Receivers (VSRs)
Appendix
M: AAHK¡¦s FEP No. FEP-01/352/2009/D
Appendix
N: Implementation Schedule of Mitigation Measures on Landscape & Visual
Impact
Appendix
O: AAHK¡¦s FEP No. FEP-02/352/2009/D