Agreement No. CE 7/2011(HY)

Tuen Mun – Chek Lap Kok Link – Design and Construction

 

 

Landscape and Visual Plan

 

Table of Contents                                                                                                                             

 

1	INTRODUCTION
	1.1	This Assignment
	1.2	Background
	1.3	The Project
	1.4	Scope of this Landscape and Visual Plan
	1.5	Abbreviations
2	DESIGN CONSIDERATIONS
	2.1	Landscape Design Considerations
3	MITIGATION MEASURES
	3.1	Landscape and Visual Mitigation Measures
	3.2	Compensatory Landscape Planting.
	3.3	Tree Compensation
4	CONCLUSION

TABLES

Table 3.1 Table 3.2	Summary of Achievement of Mitigation Measures Summary of Compensatory Planting Areas proposed for the Project
Table 3.3	Summary of Tree Compensation

 

FIGURES
Figure 1.1	Project Location Plan
Figure 1.2	Contract 1 – Southern Connection Viaduct Section
Figure 1.3	Contract 2 – Northern Connection Sub-Sea Tunnel Section
Figure 1.4	Contract 3 – Northern Connection Toll Plaza and Associated Works
Figure 1.5	Contract 4 – Northern Connection Tunnel Buildings, Electrical and Mechanical Works
Figure 1.6	Contract 5 – Northern Connection Traffic Control and Surveillance System
Figure 2.1	Roadside Planting and Preservation of Existing Woodland (Contract 1 – HY/2012/07)
Figure 2.2	Viaduct Design (Contract 1 – HY/2012/07)
Figure 3.1	Aesthetic Design of North and South Portal at Landfalls (Contract 2 – HY/2012/08)
Figure 3.2	Paving Pattern of Concrete Paving Block (Contract 2 – HY/2012/08)
Figure 3.3	North Ventilation Building at Northern Landfall (Contract 2 – HY/2012/08)
Figure 4.1	Vitreous Enamel (VE) Panel at Retaining Wall RW_B (Contract 3 – HY/2013/12)
Figure 4.2	Vehicular Underpass East Portal (Contract 3 – HY/2013/12)
Figure 4.3	Vehicular Underpass West Portal (Contract 3 – HY/2013/12)
Figure 4.4	Footbridge (Contract 3 – HY/2013/12)
Figure 4.5	Viaduct Bridge G2 (Contract 3 – HY/2013/12)
Figure 4.6	Paving Pattern at Deck (Contract 3 – HY/2013/12)
Figure 5.1	Main Control Building (Contract 4 – HY/2017/10)
Figure 5.2	Maintenance Depot at Northern Landfall (Contract 4 – HY/2017/10)
Figure 5.3	Administration Building at Northern Landfall (Contract 4 – HY/2017/10)
Figure 5.4	Satellite Control Building at Southern Landfall (Contract 4 – HY/2017/10)
Figure 5.5	Reprovisioned Customs and Excise Department Building at Northern Landfall (Contract 4 – HY/2017/10)
Figure 5.6	Reprovisioned Fire Services Department Building at Northern Landfall (Contract 4 – HY/2017/10)
Figure 5.7	Buffer Planting and Enhancement of Townscape Quality at Northern Landfall (Contract 4 – HY/2017/10)
Figure 5.8	Buffer and Structure, Ornamental Planting at Maintenance Depot and Administration Building (Contract 4 – HY/2017/10)
Figure 5.9	Buffer and Structure, Ornamental Planting at Maintenance Depot and Administration Building (Contract 4 – HY/2017/10)
Figure 5.10	Buffer Planting and Enhancement of Townscape Quality at Northern Landfall (Contract 4 – HY/2017/10)
Figure 6.1	Planting Schedule –(Contract 1 - HY/2012/07)
Figure 6.2	Planting Schedule –(Contract 3 - HY/2013/12)
Figure 6.3	Planting Schedule –(Contract 4 - HY/2017/10)
Figure 6.4	Planting Schedule for Southern Landfall (Contract 1 - HY/2012/07 and Contract 4 - HY/2017/10)
Figure 7.1	Tree Transplant (CM2) (Contract 1 – HY/2012/07)
Figure 7.2	On Site Tree Transplant (CM2) (Contract 3 - HY/2013/12)
Figure 8.1	Mitigation Measures in Construction Phase (Contract 1 - HY/2012/07)
Figure 8.2	Mitigation Measures in Construction Phase (Contract 1 - HY/2012/07)
Figure 8.3	Mitigation Measures in Construction Phase (Contract 1 - HY/2012/07)
Figure 8.4	Mitigation Measures in Construction Phase (Contract 2 - HY/2012/08)
Figure 8.5	Mitigation Measures in Construction Phase (Contract 2 - HY/2012/08)
Figure 8.6i	Screening of Construction Works by Hoardings Around Works (CM5) (Contract 2 - HY/2012/08)
Figure 8.6ii	Screening of Construction Works by Hoardings Around Works (CM5) (Contract 2 - HY/2012/08)
Figure 8.7	Mitigation Measures in Construction Phase (Contract 3 - HY/2013/12)
Figure 8.8	Mitigation Measures in Construction Phase (Contract 3 - HY/2013/12)
Figure 8.9	Mitigation Measures in Construction Phase (Contract 3 - HY/2013/12)
Figure 8.10	Mitigation Measures in Construction Phase (Contract 4 - HY/2017/10)
Figure 8.11	Mitigation Measures in Construction Phase (Contract 4 - HY/2017/10)

 

 

APPENDICES
Appendix A	General Layout and Scope of Contracts for TM-CLKL Project
Appendix B	Letter of Certification from Environmental Team Leader and Independent Environmental Checker
Appendix C	Mitigation Measures Plan (Operation Phase) and Landscape Sections
Appendix D	Proposed Compensatory Planting Areas
Appendix E.1	Summary of Tree Compensation
Appendix E.2	Tree Planting on Slopes
Appendix E.3	Tree Compensation Outside Project Boundary
Appendix F	Implementation of Mitigation Measures
Appendix G	Tree Transplant
Appendix H	Mitigation Measures at Construction Phase
Appendix I	Implementation Schedule

1.                   introduction

1.1                This Assignment

1.1.1            In accordance with Agreement No. CE 7/2011 (HY), signed on 28 November 2011, AECOM Asia Co. Ltd. (the Consultants) will provide design and construction services for the Tuen Mun – Chek Lap Kok Link Project.

1.2                Background

1.2.1      Based on the Northwest New Territories (NWNT) Traffic and Infrastructure Review conducted by Transport Department, the existing traffic corridor comprising Tuen Mun Road, Ting Kau Bridge, Lantau Link and North Lantau Highway (NLH) will be operating beyond capacity after 2016 due to the increase in cross boundary traffic, and projected developments in the NWNT and North Lantau, including the Airport developments and the Hong Kong-Zhuhai-Macao Bridge (HZMB).  It is therefore necessary to provide a new connection between NWNT and North Lantau to cope with the anticipated increase in traffic demand.

1.2.2             The road link comprising the proposed Tuen Mun – Chek Lap Kok Link (TM-CLKL) and Tuen Mun Western Bypass (TMWB) was one of the possible highway infrastructure options identified under the NWNT Traffic and Infrastructure Review. The TM-CLKL will also serve as an alternative route to the HKBCF, the HKIA and Tung Chung independent of North Lantau Highway (NLH).

1.2.3             In November 2005, HyD engaged Messrs. Ove Arup & Partners Hong Kong Limited to undertake an engineering feasibility study (CE28/05) to evaluate the feasibility and impact of the proposed TM-CLKL and TMWB.  The feasibility study recommended that the TM-CLKL should be a dual 2-lane road with a total length of about 9km including subsea tunnel and elevated structures.

1.2.4             In May 2008, HyD engaged Messrs. AECOM Asia Co. Ltd. to undertake the investigation and preliminary design of the TM-CLKL under CE52/07 (referred to hereinafter as the Investigation Assignment).  The main tasks under the Investigation Assignment included review of the previous feasibility study, formulation and evaluation of alignment options, carrying out preliminary design of the proposed works, conducting EIA and other various impact assessments (including the TIA, MIA, DIA, SIA, WIA, natural terrain hazard assessment, geotechnical assessment, utilities impact assessment, etc.), engineering studies and site investigation works.  The preliminary design of the TM-CLKL was substantially completed.

1.2.5           In the Investigation Assignment, constraints which have been taken into consideration in the selection of the TM-CLKL alignment option include, but not limited to, the following:

(a)       the existing and future widening of Urmston Road;

(b)       the FSD Fireboat Station and the associated berths at Tuen Mun River Trade Terminal;

(c)       the proposed crematorium and columbarium funeral services centre at Tuen Mun Area 46;

(d)       the Tuen Mun Immigration Anchorage and Sham Shui Kok Anchorage;

(e)       the existing and planned marine borrow pits and mud disposal pits (including the three proposed contaminated mud pit at south of the Brothers);

(f)        the existing and planned submarine utilities connecting HKIA and Tuen Mun;

(g)       the existing & future Tung Chung Navigation Channel;

(h)       the future development at North Lantau (including Tung Chung east development, Lantau Logistics Park and its extension, Road P1 and Tai Ho Interchange, etc.);

(i)        the Designated Area of Northshore Lantau;

(j)        the Airport Railway;

(k)       the Pak Mong Site of Archaeological Interest and Tai Ho Site of Archaeological Interest;

(l)        the Hong Kong International Airport Approach Areas around Airport Island;

(m)      the Airport Height Restriction;

(n)       the Hong Kong Observatory’s aviation beacons and meterological equipment; and

(o)       the interface with other projects including HKBCF, TMWB, Further Landscape Enhancement to NLH; proposed Tuen Mun Western Trunk Sewerage projects, etc

1.2.6             Compared with the recommendations given in the feasibility study (CE 28/05), the Investigation Assignment (CE 52/07) has the following major changes:

(a)       The southern landfall of the subsea tunnel was proposed to be integrated with the HKBCF located at the northeast water off the Airport Island, instead of adjacent to Tai Mo To.  This arrangement helps reducing substantial amount of dredging works and seawall construction.  With TM-CLKL located at east of the HKBCF, traffic from HZMB can go directly to NWNT via TM-CLKL Northern Connection (i.e. which comprises mainly the subsea tunnel, cut-and-cover tunnels at the landfalls and viaducts, at-grade roads and a toll plaza at Tuen Mun side) or to the urban area via TM-CLKL Southern Connection (which comprises mainly the sea viaduct and link roads at Lantau) and NLH.  Traffic to/from the HKBCF will not need to route through Tung Chung and the Airport Island, thus minimizing the environmental and traffic impacts to Tung Chung New Town.

(b)       The subsea tunnel was proposed to be constructed by TBM instead of the traditional immersed tube method. The construction method avoids dredging and disposal of substantial amount of marine sediment, diversion of the submarine power cables currently serving the HKIA and reducing the impact on the marine traffic on the busy Urmston Road.  It also minimizes the impacts on the marine ecology.

(c)       A combined toll plaza at Tuen Mun Area 46 was proposed to serve both TM-CLKL and TMWB, assuming that both TM-CLKL and TMWB would be tolled (the tolling strategy of TMWB is also subject to review under TMWB project).

Above major changes were incorporated into the EIA Report for the TM-CLKL project, and the Report was approved by EPD (Register No. AEIAR-146/2009) under the EIAO on 23 October 2009, and an Environmental Permit (reference No. EP-354/2009) was issued by EPD on 4 November 2009 with a set of conditions to be followed.

1.2.7             On 12 June 2009, the draft Chek Lap Kok Outline Zoning Plan (OZP) No. S/I-CLK/11, with the southern landfall of TM-CLKL together with HKBCF shown, was gazetted under the Town Planning Ordinance (Chapter 131) (G.N.3600). This draft OZP was approved and subsequently renumbered as S/I-CLK/12 on 18 October 2011.  On 21 August 2009, the road and scheme of TM-CLKL was gazetted under the Roads (Works, Use and Compensation) Ordinance (Chapter 370) (G.N. 5157).  The statutory process is complete.  Furthermore, the new draft OZP No. S/I-CLK/13 was released in Gazette on 8 May 2015.

1.2.8             In July 2009, HyD commissioned a consultancy (CE25/09) for the ground investigation works for the HKBCF reclamation (including TM-CLKL southern reclamation) and was completed.

1.2.9             In September 2009, HyD commissioned a design and construction consultancy (CE28/09) for the HKBCF reclamation works (including TM-CLKL southern reclamation).  The scope of this consultancy includes the review, detailed design, tender preparation/assessment and construction supervision for the reclamation works (total about 150 hectares). The reclamation detailed design was substantially completed and the works contact has been awarded in November 2011.

1.2.10          In November 2009, HyD commissioned a ground investigation works Contract No. HY/2009/23 under CE25/09 providing essential geotechnical data for the reclamation detailed design under CE28/09.  The ground investigation works was completed in 2010.

1.2.11          The TM-CLKL project is a designated project under Schedule 2 of the EIAO (Cap. 499) and an EP is required for the construction and operation of the TM-CLKL.  The EIA Report for the TM-CLKL project was approved by EPD (Register No. AEIAR-146/2009) under the EIAO on 23 October 2009 and an EP (Reference No. EP-354/2009) was issued by DEP on 4 November 2009 with a set of conditions to be followed.  The EIA studied the impacts of the TM-CLKL project on noise, air quality, water quality, waste management, land contamination, ecology, fisheries, landscape and visual, cultural heritage and landfill gas hazard during construction and operation stages. A comprehensive EM&A programme has been recommended for the construction and operation of the TM-CLKL.  Details of the recommended environmental mitigation measures were given in the approved EIA Report and EM&A Manual.

1.2.12          In the Investigation Assignment, priority was given to adopt the drained-reclamation (instead of full-dredging) over the majority of reclamation areas, except seawall base and other areas where underground structures are located, so as to minimize the dredging and disposal of marine sediments.  Nevertheless, full dredging was proposed for forming seawall base so as to ensure the stability of seawalls and minimize their settlement, and this was assumed in the EIA study of TM-CLKL.

1.2.13          In the GI and laboratory testing conducted in end 2008, most of the marine sediment was classified as Category L with some classified as Category Mp (i.e. Category M sediment passing the biological tests) according to ETWB TC(W) No. 34/2002.  These results were used for the EIA study of TM-CLKL.

1.2.14          In the further GI and laboratory testing carried out in early 2010 under HY/2009/23, more Category M_p and M_f (i.e. Category M sediment failing the biological tests) marine sediment was found at the southern landfall of TM-CLKL (refer to hereinafter as Southern Landfall).  Under CE28/09, the seawall design for the Southern Landfall and HKBCF were reviewed and revised to the non-dredged method where the seawall structure is in the form of circular cells formed by interlocking of steel sheet piles.  On 15 November 2010, application for variation of EP (Application No. VEP-331/2010) was made for the design change of the Southern Landfall and an amended Environmental Permit (No. EP-354/2009/A) was issued by DEP on 8 December 2010.

1.2.15          In the further GI and laboratory testing conducted for northern landfall of TM-CLKL (referred to hereinafter as Northern Landfall) and along the marine viaducts of Southern Connection in 2010, more Category M_p and M_f sediment was found.  The Sediment Quality Report was submitted to EPD for approval in April 2011.

1.2.16          As more Category M marine sediment was found, there is a need to review the reclamation design of the Northern Landfall, with a view to minimize the dredging and disposal of marine sediments as far as practicable, and to derive suitable method to handle the marine sediment.   In addition, as these marine sediments will be excavated during the construction of the cut-and-cover tunnels and tunnel shafts of TM-CLKL, it is necessary to assess and recommend measures to handle these materials and apply for the subsequent variation of EP for the Project. In view of the above circumstances, a VEP-426/2014 was submitted to EPD in January 2014 and an EP (Reference No. EP-354/2009/B) was issued by DEP on 28 January 2014. 

1.2.17          In October 2010, HyD commissioned an independent expert review on geotechnical design and construction of the proposed subsea TBM tunnel under Agreement No. HHZMB3/10.  The review was completed in January 2011. The principal objectives of the Independent Review are:-

(a)       to review the working papers, reports and documents about the geotechnical design of the subsea TBM tunnel prepared under the Investigation Assignment and those prepared under CE28/09, and to advise on whether areas of concerns that would have significant adverse impact on the Project have been adequately addressed; and

(b)       to advise on the constructability of the large diameter TBM tunnels and the cross-passages; risk mitigation measures; and recommend any necessary further ground investigation, based on the outcome of the review.

1.2.18          In December 2010, HyD engaged Messrs. AECOM Asia Co. Ltd. under CE13/10 to undertake the detailed design, tendering and construction supervision of the superstructures and infrastructures of HKBCF as well as the TCSS of the HKLR and TM-CLKL Southern Connection for achieving a coherent, consistent and efficient system-wide TCSS design for the closely related HKBCF, HKLR and TM-CLKL Southern Connection.

1.2.19          According to the EPs of the HKLR, HKBCF and TM-CLKL projects, an independent Environmental Project Office (ENPO) is required to oversee the cumulative environmental impacts arising from the projects and other concurrent projects in the adjoining area and to liaise closely with the Mainland project teams for the HZMB Main Bridge next to Hong Kong Territory within Mainland waters.  The duties of ENPO and Independent Environmental Checker (IEC) of the HKLR, HKBCF and TM-CLKL projects would be undertaken and performed by a separate consultancy.

1.2.20          To facilitate the first construction contract for HKBCF reclamation and the TM-CLKL advance southern reclamation works, HyD commissioned a consultancy to undertake a baseline environmental monitoring as required in the EPs for HZMB Hong Kong projects before the award of the first contract.

1.2.21          A further baseline Pitcher Plant survey was conducted in September 2013 and confirmed the construction of the future Toll Plaza at Tuen Mun will affect the existing Pitcher Plant.  As a result, it was proposed to transplant the affected Pitcher Plants.  A VEP-456/2014 was submitted to EPD and an EP (Reference No. EP-354/2009/C) was issued by DEP on 10 December 2014.

1.2.22          Grouting trial for stone column was to be carried out at the designated areas.  A VEP-469/2015 was submitted to EPD and an EP (Reference No. EP-354/2009/D) was issued by DEP on 13 March 2015.

1.2.23          The 2019 Policy Address has required that “… waiving the tolls of the new TM-CLKL Subsea Tunnel and the Lantau Link upon the commissioning of the TM-CLKL Subsea Tunnel scheduled for the end of 2020 …”  In response to this Policy Address requirement, no toll would be constructed for the TM-CLKL project.  It was also decided to free up the areas for gainful use, and the site would be allocated to the bus company through short term tenancy (STT) for bus depot/ parking sites.  There would not be new road/ road widening/ additional road lanes, and the project site area would only be reduced.  HyD applied for surrender of part of the TM-CLKL EP relating to the scope of the Toll Plaza.  The future bus company depot/ parking site would be excluded from the scope of the EP.

 

1.3                The Project

1.3.1      The scope of the whole TM-CLKL project comprises the followings:

(a)             Construction of a dual 2-lane road tunnel (in two tubes) of approximately 5.0km long between Tuen Mun and the proposed HKBCF at northeast of HKIA;

(b)             Construction of sections of seawalls of approximately 4.2km long and Government foreshore and/or sea-bed to be reclaimed to form approximately 35.6hectares of land for the construction of the proposed TM-CLKL and the proposed associated tunnel portals, buildings, carriageways, footpaths, central reserve/refuge islands and the ancillary works.;

(c)             Construction of approach roads to the subsea tunnel including cut-and-cover tunnels at both the Southern Landfall and the Northern Landfall;

(d)             Construction of maintenance access roads on the Northern and Southern Landfalls;

(e)             Construction of a dual 2-lane marine viaduct of approximately 1.6km long across the sea between the proposed HKBCF and NLH;

(f)              Construction of four slip roads connecting the marine viaduct with the NLH;

(g)       Construction of a single 2-lane viaduct and a single 3-lane viaduct, each of approximately 500m long, connecting the associated roads in Tuen Mun and the Northern Landfall;

(h)       Site formation for construction of the road deck, including construction of associated slope works with natural terrain hazard mitigation measures and retaining structures at Tuen Mun Area 46;

(i)        Construction of the associated carriageways and a footbridge at Tuen Mun Area 46;

(j)        Construction of a vehicular underpass to connect the road deck and the roundabout at Lung Mun Road / Lung Fu Road;

(k)       Modification and realignment of existing Lung Mun Road and Lung Fu Road including reconstruction/modification of sections of existing carriageways, footpaths and cycle tracks, utility diversion works to facilitate the construction of the substructure of the road deck;

 (l)      Construction of administration building, main control building, maintenance depot and ancillary buildings, control points and facilities at the compound area (such as workshops, garage, training ground, petrol filling station, etc.), satellite control building, ventilation buildings and associated building services works to serve the proposed tunnel;

(m)      Extension of the existing 4-cells box culvert adjacent to Tuen Mun River Trade Terminal;

(n)       Construction of a temporary pontoon and re-provisioning of existing government berths and associated facilities at Tuen Mun River Trade Terminal;

(o)       Realignment of the seawall maintenance road at the seafront of North Lantau, including modification of the existing seawall for construction of the foundation works of the proposed elevated carriageway;

(p)       Modification and realignment of sections of NLH and Cheung Tung Road including construction of associated slope works with natural terrain hazard mitigation measures and utility diversion works;

(q)       Laying of a fire main along Cheung Tung Road (this works element is identified after finalizing the road scheme for gazette);

(r)        Relocation of two public lighting substations along Cheung Tung Road as agreed with relevant management and maintenance authorities;

(s)       Construction of route-wide E&M works, TCSS and facilities for the TM-CLKL, including ventilation, street lighting and tunnel lighting, fire services system, tunnel operation and control systems, communication systems, security and access control system, supervisory control and data acquisition system, power supply, central monitoring and control system power supply and distribution systems; and

(t)       Construction of associated works including civil, structural, geotechnical, marine, drainage, sewerage, environmental protection and mitigation, landscaping, traffic aids including sign gantries, traffic signs, directional signs and road markings, water works and utilities works.

1.3.2      Under the Investigation Assignment, the works of TM-CLKL are recommended to be constructed under six packages by either “Design and Build” (D&B) approach or conventional “Designer-Led” approach.  Both the detailed design and construction of the first package for advance work of TM-CLKL (i.e. the Southern Landfall reclamation) has been entrusted to the HKBCF project. Subject to the review under this Assignment on the contract strategy and packaging, the remaining works of the Project will be constructed by five works contracts.  The scope and the assumed approach for each of the works contracts are listed below.

Contract 1 -       Southern Connection including all viaducts and slip roads connecting the HKBCF and NLH and associated re-alignment of Cheung Tung Road, slopeworks, natural terrain hazard mitigation works and laying of a fire main along Cheung Tung Road  (D&B approach, except the landscaping works).

Contract 2 -       Tunnel Section including Northern Landfall reclamation (including temporary pontoon for berthing and re-provisioning of government berths), extension of box culvert, subsea TBM tunnel (two tubes and some cross passages), cut-and-cover tunnels, approach roads, at-grade roads, North Ventilation Building and South Ventilation Building at the Northern Landfall and Southern Landfall respectively (D&B approach, except Northern Landfall reclamation and extension of box-culvert).

Contract 3 -       The associated connections including viaducts connecting with Northern Landfall, a footbridge, a vehicular underpass, Lung Mun Road and Lung Fu Road junction modification works, slip roads, roundabout and realignment of a section of Lung Mun Road (“Designer-Led” approach).

Contract 4 -       All Tunnel Buildings and Route-wide E&M works including the main control building, maintenance depot and training ground, administration building, petrol filling station, ventilation buildings, satellite control building, control points and facilities, re-provision of C&ED and FSD Buildings (excluding North Ventilation Building and South Ventilation Building which are included in Contract 2 above), including building services.

Contract 5 -       Route-wide TCSS system (Design, supply and installation of a traffic control and surveillance system for the TM-CLKL Northern Connection).

The extent and scope of the above Contracts 1 to 5, including the responsibility of implementation of landscape works are shown on Figures 1.1 – 1.6.

1.3.3      The works will be implemented according to the following anticipated schedules:

Contract 1 – Contract No. HY/2012/07 – Southern Connection Viaduct Section

Design and Construction Period

June 2013 to 1st half of 2019 at the earliest

 

Contract 2 – Contract No. HY/2012/08 – Northern Connection Sub-sea Tunnel Section

Design and Construction Period

August 2013 to 2020 at the earliest

 

Contract 3 – Contract No. HY/2013/12 – Northern Connection Toll Plaza and Associated Works

Construction Period

July 2014 to 1st half of 2019

 

Contract 4 – Contract No. HY/2017/10 – Northern Connection Tunnel Buildings, Electrical and Mechanical Works

Construction Period

May 2018 to 2020 at the earliest

 

Contract 5 – Contract No. HY/2014/10 – Northern Connection Traffic Control and Surveillance System

Design and Construction Period

May 2018 to 2020 at the earliest

 

1.3.4      Under Contract No. HY/2012/07, part of the landscape softworks has been entrusted to Contract No. DC/2016/01, Construction of an Additional Sewage Rising Main between Tung Chung and Siu Ho Wan and Associated Works.   A new rising main is needed to be constructed in order to free the existing rising main conveying sewage from the Airport and Tung Chung to Siu Ho Wan Sewage Treatment Works for rehabilitation.  The major benefit of this project is to enhance the operation reliability of the sewerage.  In view of the importance of the project, part of the landscape softworks has been entrusted to this project so that sewage works could commence as soon as possible.  It would be most undesirable if the plantings completed in Contract No. HY/2012/07 are to be removed shortly after for construction of the proposed sewer.  The EP requirements on the landscape softworks still apply to the entrusted works.  The anticipated completion of the entrusted landscape softworks is by June 2021 at the earliest.  The portion of the entrusted landscape softworks is demarcated in the landscape master plans in Appendix D.

 

1.4                Scope of this Landscape and Visual Plan

1.4.1      The Landscape and Visual Plan (LVP) is prepared in accordance with Condition 2.9 of the prevailing EP No. EP-354/2009/D.  The LVP for the Project shall cover the aesthetic design of the viaduct, building structures and streetscape elements, detailed tree preservation, transplanting and felling proposal, compensatory planting proposals to provide at least 33 ha of landscape planting, and other measures including night-time lighting control.

1.4.2      The proposed General Layout and the limit of site boundary for the Project are illustrated in Appendix A. The scope and extent of the five contracts involved in the TM-CKLK Project is also tabulated and illustrated in Appendix A of this Plan. 

1.4.3      With reference to Para 1.2.6(c) of this LVP, a combined toll plaza strategy to serve both the TM-CLKL and TMWB was considered and adopted in the approved EIA Report (AEIAR-146/2009).  The latest design and the road alignment of TM-CLKL exclude the road layout of TMWB and its associated buildings, roadside planting and streetscape treatment.  Subsequently the scope of this LVP does not include the layout and works of TMWB and the recommended mitigation measures for their associated landscape and visual impact.

1.4.4      With reference to Para 1.2.23, this LVP will not include the toll plaza, the toll collection facilities and the future bus company bus depot/ parking site.   

1.4.5      Following this introductory section, the remainder of this LVP is arranged as follows: 

·                     Section 2 describes design considerations for the Project;

·                     Section 3 describes the detail implementation of the mitigation measures in reference to the approved EIA Report;

·                     Section 4 summarizes the findings.

 

1.5                Abbreviations

1.5.1             The following abbreviations are used in this LVP:

1.5.2             Government Departments

CEDD                      Civil Engineering and Development Department

C&ED                      Customs and Excise Department

DevB                       Development Bureau

DSD                        Drainage Services Department

EMSD                      Electrical and Mechanical Services Department

EPD                         Environmental Protection Department

FSD                         Fire Services Department

GLTMS                     Greening, Landscape and Tree Management Section

HyD                         Highways Department

HyD/Lighting            Highways Department/Lighting Division

LandsD                    Lands Department

TD                           Transport Department

WSD                        Water Supplies Department

 

Others

ACABAS                  Advisory Committee on the Appearance of Bridges and Associated Structures

HKIA                        Hong Kong International Airport

MTRC                       Mass Transit Railway Corporation

 

1.5.3             Road/Places

CTR                         Cheung Tung Road

HKBCF                     Hong Kong Boundary Crossing Facilities

HZMB                      Hong Kong – Zhuhai – Macao Bridge

LFR                          Lung Fu Road

LMR                         Lung Mun Road

LLP                          Lantau Logistics Park

NLH                         North Lantau Highway

PDA                         Potential Development Area

TM-CLKL                  Tuen Mun – Chek Lap Kok Link

TMWB                      Tuen Mun Western Bypass

 

2                    DESIGN CONSIDERATIONs

2.1                Landscape Design Considerations

2.1.1             In Section 10.9 of the approved EIA Report, design measures are proposed as landscape and visual mitigation measures during detailed design stage.  The measures are considered and will be adopted in the construction as far as practical.

2.1.2             In the development of the design for landscape works, the followings pose constraints on tree planting and greening provision on the TM-CLKL project.

·             Public Lighting Design Manual (PLDM) (3^rd Edition: October 2016)

As stipulated in the PLDM (3^rd Edition: October 2016), “In general, the trees shall be planted at least 10m away from the road lighting columns and 15m away from high mast lighting column. To avoid obstruction to maintenance access, no planting of bushes shall be allowed in an area of at least 1m radius from the lamp post.”  Tree plantings are about 10m offset from the street lighting in TM-CLKL.

 

·             Structures Design Manual for Highways and Railways (2013 Edition)

As stipulated in the SDM (2013 Edition, “Placement of soft and hard landscape elements shall not obstruct the motorists’ sight lines and visibility splays as recommended in the Transport Planning and Design Manual (TPDM) Volume 3, Section 3.” A balance will be seeked between the area suitable for tree planting and the safety of motorists.

 

·             Hong Kong International Airport

Planting at the Southern Landfall is required to follow the guidelines described in the Hong Kong International Airport Approved Plant Species List (Revision 4.0.1: October 2015) [APSL].  Relevant restrictions of the planting design shall follow the APSL.  The planting area fall within Zone 1 and Zone 2 of the APSL.  Basically, Zone 1 is a no-tree zone and tree planting restrictions applied in Zone 2.  However, to maximize tree planting to meet the compensatory tree quantity under the tree removal applications, an alternative tree planting proposal was submitted to the HKIA and “no adverse comment” was received from the perspective of birdstrike risk management.

 

·             Potential Development Area

There are areas within the TM-CLKL that are potential development areas under the “Planning and Engineering Study for Tuen Mun Areas 40 and 46 and the Adjoining Areas”.  Tree planting is not recommended for the potential development area (PDA) as the trees will likely to be removed for the development of the PDA.  Planting within the PDA is considered short term and is also not counted towards the compensatory planting area for the EP condition in order not to jeopardize the future land uses.  Government lots will be fenced off and will be returned to LandsD in condition to their satisfaction.  

 

·             Areas under Shade

Areas under shade includes places under the cover of the road deck and viaducts and in general not favorable for tree planting for the healthy development of trees.

 

·             Slope Planting

The types of planting on man-made slopes are subject to the angles, the locations and substrate conditions of the slopes.  Reference is made to “GEO Publication No. 1/2011 Technical Guidelines on Landscape Treatment for Slopes” in the planting proposal for man-made slopes.  Slopes with rocky substrate condition limited the size and quantity of tree planting.  Compensatory tree planting proposals for slopes under the maintenance of HyD have been reviewed and commented by HyD/Landscape Division on the tree species, sizes, spacing and locations.

 

·             Underground Utilities

There are existing underground utilities within some of the planting areas and a considerable amount of land area is reserved for accommodation of new underground utilities and underground structures, especially for roadside areas and areas near tunnel entrances/exists. Tree planting is avoided in these areas as they may obstruct the necessary maintenance and inspection works of underground utilities and structures.

 

·             Mass Transit Railway Protection

MTRC has raised concern of planting within the MTR protection boundary, in particular areas near the track in North Lantau.  From railway protection point of view, MTRC considers that climber planting for piers near the track is unacceptable as it will impose fire hazard to the operating railway.  Trees will hit the MTR structure, fence or overhead power lines in case of collapse.  Compliance of the railway protection requirement is required.

 

·             ‘Right Tree for the Right Place’

While all available areas within the project boundary are to be exhausted to identify suitable sites for tree planting, the basic principle of ‘right tree for the right place’ has to be observed, and as such sufficient space for the proper growth of trees have to be provided.  Tree density should not be increased without compromising the appropriate and proper spacing for tree growth and resulting in more vegetation maintenance efforts.

 

Furthermore, compensatory tree planting should be provided in locations that would bring benefits to the community and public enjoyment, and the sites should be permanent instead of temporary to avoid future transplanting/ removal.  The fenced-off drainage reserve area in the Northern Landfall is not accessible to the public and thus diminishing the amenity value of the greening works.  Also the fenced-off area is considered not suitable for implementing long term greening strategy due to uncertain but potential programme of development of the land.  The alternative compensatory planting at the seaward side of the Northern Landfall facing towards the Butterfly Beach would bring better public enjoyment, thus enhancing the amenity value of the greening and compensatory planting works.   The locations and photos of the alternative planting at the seaward side of the Northern Landfall are illustrated in Figure 5.7 of Appendix F.

 

2.1.3      The constraints on planting pose a challenge to the landscape design.  To minimize the potential landscape and visual impact, other than maximizing greening opportunities, aesthetic architectural design on the above-ground structures and buildings also serve to provide a harmonized effect.   The mitigation measures proposed in the approved EIA Report and a summary of achievement of the proposed mitigation measures in different stages are consolidated in Table 3.1 of Section 3. 

 

3                    mITIGATION MEASURES

3.1                Landscape and Visual Mitigation Measures

3.1.1             In Section 10.9 of the approved EIA Report, landscape and visual mitigation measures are proposed for design, construction and operation phases.

3.1.2             Implementation details and the corresponding contract of the landscape and visual mitigation measures under TM-CLKL project are summarized in Table 3.1 below.

 

Table 3.1 Summary of Achievement of Mitigation Measures

 

ID No.	Design Measures	Summary of Achievement of the Proposed Mitigation Measures	Relevant Contract(s)
DM1	The large surface of the retaining wall along the toll plaza area shall adopt a patterned/smoother finishes and texture design to break the large surface. Climber treatment is proposed to soften the structures.	Rib pattern to break the large surface has been incorporated in the detail design of the retaining walls.   In particular, for the highly visible retaining wall along Lung Mun Road below the road deck, retaining wall RW_B, there will be a graphic art design on vitreous enamel (VE) cladding panels, enhancing the roadside aesthetics and reducing the apparent height and bulkiness of the wall.  Due to the under shade location of the retaining wall, greenery and sinuous pattern is adopted instead of climber treatment.     The VE cladding panels and the graphic design for RW_B were accepted by ACABAS.  The graphic art and the VE cladding panel sample are shown in Figure 4.1 of Appendix F.	C3
DM2	The colour and shape of the toll control buildings, ventilation building and administration building shall adopt a design which could blend it into the vicinity elements, and the details will be developed in detailed design stage.	The design of the buildings, including North and South Ventilation Buildings, Main Control Building, Maintenance Depot, Administration Building, Satellite Control Building, the reprovisioned C&ED Building and the reprovisioned FSD Building, have been incorporated in the Aesthetic Design Submission Stage 2 reports submitted to the Design Advisory Panel of Architectural Services Department.   Drawing of the North Ventilation Building under Contract 2 is shown in Figure 3.3 of Appendix F.    Drawings of the buildings to be constructed under Contract 4 are shown in Figures 5.1, Figure 5.2, Figure 5.3, Figure 5.4, Figure 5.5 and Figure 5.6 of Appendix F.	C2, C4
DM3	Round angle, patterned finishes, and oval shaped pier were considered in the viaduct design, and further details will be developed under ACABAS submission.	The marine viaduct in North Lantau was of particular concern for the Southern Connection.  Proposed aesthetic design measures incorporated in the proposed scheme of the viaduct were submitted to and accepted by ACABAS.    Inherited from the schematic design, the “Seagull” scheme was taken as the design theme for the TM-CLKL Southern Connection Viaduct Section.  Aesthetically, the seagull form piers are envisaged to collectively compose a picture of a group of seagulls flying across the sea channel.  This conceptual design of seagull piers was accepted by ACABAS in the 341st meeting.    A further ACABAS submission was made on the latest design and aesthetics enhancement for the Southern Connection Viaduct Section.  Extracted ACABAS drawing is in Figure 2.2 of Appendix F.       For the bridge viaducts and deck in Tuen Mun, improvement designs were submitted to and accepted by ACABAS.  The improvements involved reducing the bulkiness of the deck and increasing the headroom.  Extracted ACABAS drawing is in Figure 4.5 of Appendix F.	C1, C3
DM4	Details of the street furniture will be developed in the detailed design stage.	Typical street furniture mainly comprises of roadside safety railings, beam barriers, road kerbs, standard chain link fence, tactile and traffic bollard which were developed based on the standards of HyD and TD.   Herringbone pattern with contrasting colour bands of concrete paving block was adopted at the footpaths on the road deck in Contract 3.  The paving pattern is illustrated in Figure 4.6 of Appendix F.    Herringbone pattern with contrasting colour trim of concrete paving block was adopted for the footpaths in the Northern and Southern Landfalls in Contract 2.  The paving pattern is shown in Figure 3.2 of Appendix F.	C1, C2, C3, C4
DM5	Aesthetic design of the viaduct, retaining wall and other structures will be developed under ACABAS submission.	The proposed aesthetic design for the TM-CLKL Southern Connection Viaduct Section was accepted by ACABAS in the 342nd Meeting.  Further ACABAS submission was made under Contract 1 in the detailed design stage on the latest design and aesthetics enhancement for the 356th Meeting and the submission on designs of the bridge was accepted.  Extracted ACABAS drawing is shown in Figure 2.2 of Appendix F.     Aesthetic designs of the North and South Tunnel Portals have been developed and submitted to ACABAS under Contract 2.  Extracted ACABAS drawing is shown in Figure 3.1 of Appendix F.    For Contract 3, the aesthetic designs for the highway structures were accepted by ACABAS in the investigation assignment, in the 317th and 319th meetings.  Subsequently, design amendments to some sections of the viaduct and road deck structure were submitted to ACABAS and were accepted. An extracted drawing on a section of the bridge is shown in Figure 4.5 of Appendix F.   Also under Contract 3, the aesthetic design for the following elements were submitted to and accepted by ACABAS: ·             Graphic art design on VE cladding panel for retaining wall RW_B (Figure 4.1) ·             East and West vehicular underpass portals (Figure 4.2 and Figure 4.3) ·             Footbridge (Figure 4.4)	C1, C2, C3
ID No.	Construction Phase Mitigation Measures	Summary of Achievement of the Proposed Mitigation Measures	Relevant Contract(s)
CM1	Existing trees on boundary of the Project Area shall be carefully protected during construction. Detailed Tree Protection Specification shall be provided in the Contract Specification. Under this specification, the Contractor shall be required to submit, for approval, a detailed working method statement for the protection of trees prior to undertaking any works adjacent to all retained trees, including trees in contractor’s works areas.	The retained trees are preserved and protected according to the Contract Specification.  As required under the Contract, the Contractors submitted the method statement for the protection of trees for approval.  Photo record of typical tree protection on site is shown in Appendix H, Figure 8.1 for Contract 1 and Figure 8.7 for Contract 3.	C1, C3
CM2	Trees unavoidably affected by the works shall be transplanted where practical. Trees will be transplanted straight to their final receptor site and not held in a temporary nursery. A detailed Tree Transplanting Specification shall be provided in the Contract Specification. Sufficient time for necessary tree root and crown preparation periods shall be allowed in the project programme.	Under the Contract Specification for Contract 1, ‘Transplanted trees shall be relocated to the specified locations under single handling where possible.  If it not possible, the Contractor shall make provision for the relocation of the transplanted trees temporarily to a holding nursery and replanting back of the transplanted trees to the specified locations.’   Tree transplanting are carried out according to the Contract Specification for both Contract 1 and Contract 3.  Sufficient time was reserved for root pruning.  Photo record of the tree transplant process is shown in Appendix G, Figure 7.1 for Contract 1 and Figure 7.2 for Contract 3.  Trees under Contract 3 are transplanted straight to their final receptor site.   The final receptor sites for the transplant trees are within the project boundary and have been agreed with the relevant maintenance departments, i.e. HyD and LCSD.	C1, C3
CM3	Hillside and roadside screen planting to proposed roads, associated structures and slope works.	The following measures have been taken by the Contractor to allow vegetation as screening for the works during construction phase: ·        Vegetation not affected by works is not cleared under site clearance; ·        Vegetation to be affected by works will be cleared under site clearance according to phases of work.   Hillside and roadside screen planting are implemented in Contract 1 and Contract 3.  While there are no slope works in Contract 4, only roadside screen planting is implemented.   Photo record in Appendix H illustrate some locations for the implementation of CM3. Contract 1: Figure 8.2 Contract 3: Figure 8.7 Contract 4: Figure 8.10	C1, C3, C4
CM4	Hydroseeding or sheeting of soil stockpiles with visually unobtrusive material (in earth tone).	Slope works would be hydroseeded and soil stockpiles would be covered by tarpaulins to minimize dust generation in dry or windy condition.  The soil stockpiles were covered by visually unobtrusive material in green tone.   Photo record in Appendix H illustrate some locations for the implementation of CM4.   Contract 1: Figure 8.2 Contract 2: Figure 8.4 Contract 3: Figure 8.8 Contract 4: Figure 8.10	C1, C2, C3, C4
CM5	Screening of construction works by hoardings around works area in visually unobtrusive colours, to screen works.	Typical HyD standards have been adopted for the hoarding (i.e. HyD Standard drawing no. H6110C and H6111D) and fencing (i.e. HyD Standard drawing no. H6121B and H6122A) for works areas.   For a particular demolition works on Ho Yeung Street (Portion 6), the Contractor of Contract 2 adopted an approximately 4.5m height hoarding with a sliding and folder door system to screen the demolition works.  The hoarding arrangement for this demolition works area is included in Figure 8.6i and Figure 8.6ii in Appendix H.   Barriers with visually unobtrusive colours were used to screen works.  Photo record in Appendix H illustrate some locations for the implementation of CM5.   Contract 1: Figure 8.3 Contract 3: Figure 8.8	C1, C2, C3
CM6	Control night-time lighting and glare by hooding all lights.	In normal situation, the site will close at 6:00 pm and only necessary lighting installations for safety and security will be switched-on.  In the course of night-time operation (beyond 6:00 pm), suitable and adequate lighting would only be fit close to the actual works area for safe working and access.  No excessive lighting would be switched on.     The control of lighting would also fulfil the Requirement on Aviation Aspects. ·             At any time, all lights shall not form a source of glare or in any way affect pilots in flight and air traffic controllers in the Air Traffic Control Tower. ·             All lights shall not be arranged in a way which may be mistaken as aeronautical ground lights by pilots. ·             All lights shall not project skyward. For those lighting that may spill out into the sky, they should be capped at the top to avoid causing glare or any misleading signals to pilots or air traffic controller.   Photo record in Appendix H illustrate some locations for the implementation of CM6.   Contract 1: Figure 8.3 Contract 2: Figure 8.5 Contract 3: Figure 8.8 Contract 4: Figure 8.11	C1, C2, C3, C4
CM7	Ensure no run-off into water body adjacent to the Project Area.	The measures for prevention of run-off into water body has been incorporated in the Site Drainage Management Plan that has been submitted to EPD.   The measures are summarized as below: ·             Implementation of temporary drainage system; ·             Provision of wastewater treatment facilities to ensure proper treatment of wastewater generated on site; ·             Diversion of run-off using sand traps, silt traps, sediment basins and/or U-channels; ·             Provision of sand bag and earth bunds to divert run-off for wastewater treatment; ·             Covering of open stockpiles to prevent silty run-off.   Photo record in Appendix H illustrate some locations for the implementation of CM7.   Contract 1: Figure 8.3 Contract 2: Figure 8.4, Figure 8.5 Contract 3: Figure 8.9 Contract 4: Figure 8.11	C1, C2, C3, C4
CM8	Avoidance of excessive height and bulk of buildings and structures.	The design of viaducts and associated structures were designed with consideration in aesthetics and were accepted by ACABAS.   The aesthetic design of buildings was submitted to Architectural Services Department for approval under Aesthetic Design Submission Stage 2.   For the North and South Ventilation Buildings under Contract 2, E&M equipment was arranged in the basement as much as practicable.  The design intention in respect of building height for both buildings is to comply with the height limit under EIA (+24.25mPD).	C1, C2, C3, C4
CM9	Recycle/Reuse all felled trees and vegetation, e.g. mulching	With reference to Development Bureau’s Guidelines on Yard Waste Reduction and Treatment, the following measures are taken.   Reduce ·             Tree stumps will be left after tree felling for natural decomposition at areas that are inaccessible to the general public and have no safety concern. Recycle ·             Yard waste are taken to areas that are inaccessible to the general public, such as vegetated areas on slopes and within expressway boundary, for natural degradation over time. Reuse ·             Wood without suspected pest and disease will be reused, e.g. soil conditioner, mulching.	C1, C3
CM10	Compensatory tree planting shall be provided to the satisfaction of relevant Government departments. Required numbers and locations of compensatory trees shall be determined and agreed separately with Government during the Tree Felling Application process under ETWBTC 3/2006.	The Tree Removal Application report for Agreement No. CE/7/2011(HY) was approved in Year 2013 and supplementary tree removal applications have been submitted subsequently.    As commented in the approval memo in Year 2013, the design of the compensatory planting proposal within the approved application requires further review and amendment.   Tree planting proposals under Contract 1, Contract 3 and Contract 4 have been progressively agreed with the relevant maintenance authorities, i.e. HyD and LCSD.   A summary of tree compensation to show the quantity of the required compensatory tree quantity and the tree planting quantity on the agreed planting proposals is shown in Table E.1 in Appendix E.    The tree planting quantity meet the compensatory tree quantity required from the Tree Removal Applications.	C1, C3, C4
ID No.	Operation Phase Mitigation Measures	Summary of Achievement of the Proposed Mitigation Measures	Relevant Contract(s)
OM1	Re-vegetation of affected woodland/shrubland with native species	A mix of natives and exotic species will be provided to achieve a balance of the ornamental and ecological effect. Planting species for Contract 1 and Contract 3 with planting on slopes are shown in Figure 6.1 and Figure 6.2 in Appendix F.	C1, C3
OM2	Tall buffer screen tree / shrub / climber planting should be incorporated to soften hard engineering structures and facilities.	The provision of tall planting has been maximized based on site constraints such as underground utilities, the protection railway boundary of MTRC to ensure the safe operation of the railway, airport bird strike control at HKBCF, sightline and visibility requirement and the proper planting practices and guiding principles promulgated by GLTMS of DevB for the purpose to improve the growing quality of trees. Rock slopes are provided with climbers for greening.   At some locations, such as the back lane of the Maintenance Depot and the planter at the Administration Building adjacent to the wall of the tunnel portal, low buffer planting is preferred over tall buffer planting for keeping an open view of the site for safety, security and operational needs.  Photo record in Figure 5.8 and Figure 5.9 in Appendix F illustrate some low buffer planting in the Northern Landfall.	C1, C3, C4
OM3	Streetscape elements (e.g. paving, signage, street furniture, lighting etc.) shall be sensitively designed in a manner that responds to the local context, and minimises potential negative landscape and visual impacts. Lighting units should be directional and minimise unnecessary light spill.	Streetscape elements are designed in accordance to HyD standard drawings and relevant manuals for the purpose of road safety.   Signage is of standard designs according to standard drawings published by HyD.   Lighting units are standard designs which meet the requirements set out in the Public Lighting Design Manual and HyD standard drawings.   The paving pattern for the road deck and for Southern and Northern Landfalls uses light grey and dark grey concrete blocks to form simple banding pattern and simple colour trims which harmonize the grey tones of the buildings.	C1, C2, C3, C4
OM4	Structure, ornamental tree/ shrub/ climber planting should be provided along roadside amenity strips, central dividers and newly formed slopes to enhance the townscape quality and further greenery enhancement.	The provision of ornamental planting has been maximized based on site constraints such as underground utilities, the protection railway boundary of MTRC to ensure the safe operation of the railway, airport bird strike control at HKBCF, the substrate conditions and gradient of slopes, traffic sight lines, clearance from street lighting and signage, operational and security needs of the operator(s), and the proper planting practices and guiding principles promulgated by GLTMS of DevB for the purpose to improve the growing quality of trees.   For prominent area such as the new roundabout area at the junction of Lung Mun Road and Lung Fu Road in Tuen Mun, the goal is to enhance the visual amenity at this junction to create a focal node.   Ornamental flowering tree species (Delonix regia鳳凰木 and Tabebuia impetiginosa風鈴木) with lush shrub planting (Ixora spp. 龍船花) are proposed to enhance the visual amenity value of the area.  The tree planting arrangement at this node is illustrated in Figure 4.2 of Appendix F.	C1, C3, C4
OM5	Aesthetically pleasing design (visually unobtrusive and non-reflective) as regard to the form, material and finishes shall be incorporated to all buildings, engineering structures and associated infrastructure facilities.	The aesthetic designs of the proposed viaducts and associated structures were submitted to and accepted by the ACABAS. (Figure 3.1)   The aesthetic designs of all buildings were submitted to Architectural Services Department under Aesthetic Design Submission Stage 2.	C1, C2, C3, C4
OM6	Avoidance of excessive height and bulk of buildings and structures.	The design of viaduct and associated structures were designed with consideration in aesthetics and submissions were accepted by ACABAS. (Figure 2.2)   For buildings, the aesthetic designs were submitted to Architectural Services Department under Aesthetic Design Submission Stage 2.   To reduce the building height for the Northern and Southern Ventilation Buildings, the E&M equipment is arranged into the basement as much as practicable.  The design intention in respect of building height for both buildings is to comply with the height limit under EIA (+24.25mPD).	C1, C2, C3, C4

 

 

3.2          Compensatory Landscape Planting

3.2.1       According to the Condition 2.9 of Environmental Permit No. EP-354/2009/D, at least 33 ha of landscape planting are required for the whole TM-CLKL Project. The compensatory landscape planting areas for different contracts under this Project are tabulated in Table 3.2 and shown in Appendix D.

3.2.2       A total of approximately 34.13 ha of landscape planting area will be achieved.

 

Table 3.2 Summary of Compensatory Planting Areas proposed for the Project

 

Contract	Location	Landscape Planting Area
Contract No. HY/2012/07 (Contract 1)	North Lantau Highway Section, Cheung Tung Road Section and the southern portion of the Southern Landfall	Approx. 14.41 ha
Contract No. HY/2013/12 (Contract 3)	Tuen Mun Section	Approx. 5.35 ha
Contract No. HY/2017/10 (Contract 4)	Northern Landfall at Tuen Mun and the northern portion of the Southern Landfall	Approx. 14.37 ha
	Total Landscape Planting Area:	Approx. 34.13 ha

 

 

3.3          Tree Compensation

3.3.1      Compensatory tree planting shall meet the higher quantity as stated in the approved EIA Report, i.e. 6,300 heavy standard trees and light standard trees as compared to the compensatory tree quantity from tree removal applications (mitigation measure CM10) which is 5,108.  The summary of tree compensation in Table E.1 summarized the tree compensation including transplant trees required in the approved EIA Report, in the tree removal applications and presented in this LVP.

3.3.2      Based on the approved planting proposals with the relevant maintenance departments/ agents, 5,353 heavy standard trees to light standard trees could be accommodated within the project boundary in consideration of the landscape design constraints described in Section 2 of this LVP.  As such, mitigation measure CM10 is satisfied by the tree planting within the project boundary.  However, to meet 6,300 trees, compensatory tree planting outside the project boundary is necessary.

3.3.3      Compensatory tree planting on slopes of HyD have been agreed with the relevant maintenance department, i.e. HyD/Landscape Division ascertained the practicality of the proposed tree planting works.  The location, extent, average slope angles, tree species, size and spacing of the compensatory tree planting on each of the slope within the project boundary for compensatory tree planting are illustrated in Appendix E.2.

3.3.4      Proposal was made to EPD on compensatory tree planting outside the project boundary.  The proposal was to meet the quantity as stated in the approved EIA Report while the tree planting on suitable and permanent slopes of HyD could also facilitate better public enjoyment and bring benefits to the community.  Though out of the project boundary, the identified HyD slopes are within the same districts as the project site, i.e. Tuen Mun, Tung Chung and Penny’s Bay.  The location of the identified slopes, their average slope angles, quantity of compensatory trees for each slope and tentative tree schedules which have been advised by HyD/Landscape Division are in Appendix E.3.  Locations of tree planting shall be verified on site to suit the actual slope condition, and trees may be planted in other nearby slopes in the same districts.  EPD has no comment on the proposed compensatory tree planting locations from the EIAO compliance perspective.

3.3.5      The compensatory tree planting outside the project boundary will be implemented by the TM-CLKL Project.  The subsequent monitoring on the planting works will comply with the requirements in the Environmental Monitoring and Audit (EM&A) Manual as in the planting works implemented in the other contracts of TM-CLKL Project.

 

Table 3.3 Summary of Tree Compensation

 

Description	Approved EIA Report	Compensatory Tree Planting
		Within Project Boundary	Outside Project Boundary – Tuen Mun	Outside Project Boundary – Tung Chung	Outside Project Boundary – Penny’s Bay
Nos. of Compensatory Tree Planting	6,300 (approx.)	5,353	375	330	335
			375	665
			1,040
Total	6,300 nos. (approx.) (Tree Size: Light Standard, Heavy Standard)	6,393 nos. (Tree Size: Light Standard to Heavy Standard)

 

 

 

4                    Conclusion

4.1.1            The LVP is prepared in fulfilment of Condition 2.9 of Environmental Permit No. EP-354/2009/D.  This LVP submission covers the whole TM-CLKL project site.

4.1.2            This LVP for TM-CLKL is prepared based on the latest engineering information.  

4.1.3            All relevant mitigation measures listed in Section 10.9 of the approved EIA Report (Register No.:AEIAR-146/2009) have been considered and incorporated into the landscape design and construction as far as practicable.

4.1.4            The 33 ha compensatory planting area as required under Condition 2.9 of Environmental Permit No. EP-354/2009/D is achieved.

4.1.5            Compensatory tree planting 6300 nos. as required in the approved EIA Report is achieved.