1.1               Background

In December 2007, the Government gave the green light for MTR Corporation Limited (MTRCL) to proceed with preliminary planning and design of the South Island Line eastern section (SIL(E)).  In response to the Government’s decision, MTRCL recruited an Engineering Design Consultant to undertake preliminary design for the SIL(E) in February 2008, and appointed a separate Engineering Design Consultant to undertake scheme and detailed design in June 2009. 

The SIL(E) (hereafter referred to as “the Project”) will be a medium capacity railway that measures a total length of approximately 7 km.  It will run from Admiralty to South Horizons, with three intermediate stations at Ocean Park, Wong Chuk Hang and Lei Tung. The overall plan of the proposed SIL(E) scheme is shown in Figure 1.1.

In May 2008, Mott MacDonald Hong Kong Ltd. (formerly known as Mott Connell Ltd.) was commissioned by MTRCL to carry out an EIA for the proposed Project.  The EIA Consultant is independent from the Engineering Design Consultant, with necessary interface between them facilitated via MTRCL’s Environmental Team.  Key environmental factors have been evaluated early to ensure that design of the SIL(E) and planning of construction works of the Project have taken into account the potential environmental impacts, that adverse environmental impacts have been avoided as far as practicable, and sufficient mitigation measures have been identified to reduce impact to acceptable levels.

1.2           Designated Projects under EIA Ordinance

The SIL(E) is a Designated Project (DP) under Category A “Roads, Railways and Depots” of Part I in Schedule 2 to the Environmental Impact Assessment Ordinance (EIAO) falling into the following categories:

¡      Item A.2. “A railway and its associated stations”;

¡      Item A.4. “A railway siding, depot, maintenance workshop, marshalling yard or goods yard”;

¡      Item A.7. “A road or railway tunnel more than 800 m in length between portals”.

A temporary project specific magazine is proposed to be built at Chung Hom Shan for overnight storage of explosives that will be used for construction of underground railway facilities. The magazine will consist of above ground single-storey structures. The explosives magazine is considered as a DP under Item K.10, Part I of Schedule 2 of the EIAO.

The future decommissioning of the explosives magazine is a DP under Item 11, Part II of Schedule 2 of the EIAO and an Environmental Permit will be required prior to commencement of decommissioning work.

An environmental permit issued under the EIAO is therefore required before the construction and operation of SIL(E).

MTRCL submitted a Project Profile (No. PP-344/2008) on 5 February 2008 for application of an EIA Study Brief under Section 5(1) of the EIAO for the Project.  Director of Environmental Protection (DEP) issued an EIA Study Brief (No. ESB-181/2008) on 19 March 2008 for the undertaking of the EIA study.

1.3           Objectives of the EIA Study

In accordance with the EIA Study Brief, this EIA aims to provide information on the nature and extent of environmental impacts arising from the construction and operation of the Project and related activities that take place concurrently. This information will contribute to decisions by Director of Environmental Protection (DEP) on:

a.    the overall acceptability of any adverse environmental consequences that are likely to arise as a result of the Project;

b.    the conditions and requirements for the detailed design, construction and operation of the Project to mitigate against adverse environmental consequences wherever practicable; and

c.    the acceptability of residual impacts after the proposed mitigation measures are implemented.

Clause 2.1 of the EIA Study Brief sets out the specific objectives of the EIA Study as follows:

a.    to describe the Project, associated works, and any option(s) of alignment together with the requirements and environmental benefits for carrying out the Project;

b.    to identify any individual Designated Project under Part I, Schedule 2 of the EIAO to be covered in the Project to ascertain whether the findings of this EIA Study have adequately addressed the environmental impacts of these projects;

c.    to identify and describe the elements of the community and environment likely to be affected by the Project and/or likely to cause adverse impacts to the Project, including both the natural and man made environment and the associated environmental constraints;

d.    to present the considerations of alternatives with regard to avoiding and minimising the potential environmental impacts on the sensitive receivers; to compare the environmental benefits and dis-benefits of the options (including project alignment, station and depot locations, train system, locations and size of works sites and construction methods); to provide reasons for selecting the preferred option(s) and to describe the part that environmental factors played in the selection;

e.    to identified and assess noise impacts, ecological impacts, water quality impacts, landscape and visual impacts, hazard to life, waste management implications, air quality impacts and impacts on sites of cultural heritage, and determine the significance of impacts on sensitive receivers and potential affected uses;

f.      to investigate the feasibility, practicability, effectiveness and implications of the proposed mitigation measures;

g.    to identify, predict and evaluate the residual environmental impacts (i.e., after practicable mitigation) and the cumulative effects expected to arise during the construction and operational phases in relation to the sensitive receivers and potential affected uses;

h.    to identify, assess and specify methods, measures and standards, to be included in the detailed design, construction and operational stages of the Project which are necessary to mitigate these environmental impacts and cumulative effects and reduce them to acceptable levels;

i.      to investigate the extent of the secondary environmental impacts that may arise from the proposed mitigation measures and to identify constraints associated with the mitigation measures recommended in the EIA study, as well as the provision of any necessary modification; and

j.      to design and specify the environmental monitoring and audit requirements to ensure the effective implementation of the recommended environmental protection and pollution control measures.

 

1.4           Key Environmental Issues

This EIA report addresses all key environmental issues associated with the construction and operational phases of the Project, which are as specified under clause 3.2 of the Study Brief:

a.    the potential noise impacts on the existing and planned sensitive receivers, including but not limited to, South Horizons, Lei Tung Estate, Wong Chuk Hang Complex for the Elderly, Wong Chuk Hang Hospital and Wong Chuk Hang San Wai, during the construction and operation of the Project;

b.    the potential ecological impacts arising from the construction and operation of the Project, including, but not limited to, the impacts on Site of Specific Scientific Interest (SSSI) at Nam Fung Road, Aberdeen Country Park and marine habitats (including intertidal and subtidal);

c.    the potential water quality impacts arising from the construction and operation of the Project, including, but not limited to, impacts on the Aberdeen Channel (Typhoon Shelter) and the Wong Chuk Hang Nullah;

d.    the potential landscape and visual impacts on existing and planned sensitive receivers during the construction and operation of the Project;

e.    the potential hazard to life during the construction and operation of the Project;

f.      the potential impacts of various types of waste arising, including, but not limited to, excavated materials from constructing tunnels and stations of the railway and, any other construction waste and chemical waste to be generated from the construction and operation of the Project;

g.    the potential air quality impacts during the construction stage of the Project; and

h.    the potential impacts on cultural heritage likely to be affected by the construction works of the Project.

1.5           Use of Relevant Studies

Reference could be made to EIA undertaken for similar railway projects approved under the EIAO, such as those for the Hong Kong Section of Guangzhou - Shenzhen - Hong Kong Express Rail Link, West Island Line, East Rail Extensions – Tai Wai to Ma On Shan, Penny’s Bay Rail Link and Kowloon Southern Link.

1.6           Structure of the EIA Report

After this introductory section, the remainder of this EIA is arranged as follows:

¡      Section 2 presents a description of the Project;

¡      Section 3 presents the approach and methodology to and findings of the Noise Impact Assessment;

¡      Section 4 presents the approach and methodology to and findings of the Ecological Impact Assessment;

¡      Section 5 presents the approach and methodology to and findings of the Water Quality Impact Assessment;

¡      Section 6 presents the approach and methodology to and findings of the Landscape and Visual Impact Assessment;

¡      Section 7 presents the approach and methodology to and findings of the Quantitative Risk Assessment;

¡      Section 8 presents the approach and methodology to and findings of the Waste Management Implications Assessment;

¡      Section 9 presents the approach and methodology to and findings of the Land Contamination Impact Assessment;

¡      Section 10 presents the approach and methodology to and findings of the Air Quality Impact Assessment;

¡      Section 11 presents the approach and methodology to and findings of the Cultural Heritage Impact Assessment;

¡      Section 12 presents the Environmental Monitoring and Audit Requirements;

¡      Section 13 presents the Conclusions and Recommendations of the EIA study; and

¡      Section 14 presents the Implementation Schedule of Mitigation Measures.