6. CULTURAL HERITAGE IMPACT

Introduction

6.1 This section presents a cultural heritage impact assessment of the WIL project, identifying cultural heritage resources, assessing potential direct and indirect impacts from proposed works on these resources, and recommending mitigation measures where required.

Environmental Legislation and Standards

6.2 Legislation, Standards, Guidelines and Criteria relevant to the consideration of Cultural Heritage impacts under this study include the following:

§ Antiquities and Monuments Ordinance

§ Environmental Impact Assessment Ordinance

§ Hong Kong Planning Standards and Guidelines

§ Technical Memorandum on Environmental Impact Assessment Process

Antiquities and Monuments Ordinance (Cap.53)

6.3 The Antiquities and Monuments Ordinance provides the statutory framework to provide for the preservation of objects of historical, archaeological and palaeontological interest.

6.4 The Ordinance contains the statutory procedures for the Declaration of Monuments. Under the Ordinance monument means a place, building, site or structure which is declared to be a monument, historical building or archaeological or palaeontological site or structure by reason of its historical, archaeological or palaeontological significance under section 3 of the Ordinance.

6.5 Under section 6 and subject to subsection (4) of the Ordinance, the following acts are prohibited in relation to certain monuments, except under permit;

§ To excavate, carry on building works, plant or fell trees or deposit earth or refuse on or in a proposed monument or monument

§ To demolish, remove, obstruct, deface or interfere with a proposed monument or monument

6.6 A permit under section 6 of the Ordinance is required for any works falling within the boundary of the Declared Monument including installation works of monitoring instruments, tunnelling works underneath the Main Building and Tang Chi Ngong Building of the University of Hong Kong and any associated works under the Project.

6.7 The discovery of an Antiquity, as defined in the Ordinance must be reported to the Antiquities Authority, or a designated person. The Ordinance also provides that, the ownership of every relic discovered in Hong Kong after the commencement of this ordinance shall vest in the Government from the moment of discovery. The Authority on behalf of the government may disclaim ownership of the relic.

6.8 No archaeological excavation may be carried out by any person, other than the Authority and the designated person, without a licence issued by the Authority. A licence will only be issued if the Authority is satisfied that the applicant has sufficient scientific training or experience to enable him to carry out the excavation and search satisfactorily, is able to conduct, or arrange for, a proper scientific study of any antiquities discovered as a result of the excavation and search and has sufficient staff and financial support.

Environmental Impact Assessment Ordinance (Cap.499)

6.9 The Environmental Impact Assessment Ordinance (EIAO) was implemented on 1 April 1998. Its purpose is to avoid, minimise and control the adverse impact on the environment of designated projects, through the application of the EIA process and the Environmental Permit (EP) system.

Hong Kong Planning Standards and Guidelines

6.10 HKPSG (Chapter 10) covers planning considerations relevant to conservation. Chapter 10 details the principles of conservation, the conservation of natural landscape and habitats, historic buildings and archaeological sites. It also addresses the issue of enforcement. The appendices list the legislation and administrative controls for conservation, other conservation related measures in Hong Kong, and Government departments involved in conservation.

Technical Memorandum on Environmental Impact Assessment Process

6.11 The general criteria and guidelines for evaluating and assessing impacts are listed in Annexes 10 and 19 of the Technical Memorandum on Environmental Impact Assessment Process (EIAO-TM). The guidelines state that preservation in totality and measures for the integration of sites of cultural heritage into the proposed project will be a beneficial impact. It also states that destruction of a site of cultural heritage must only be undertaken as a last resort.

Vibration Limits on Heritage Buildings

6.12 A maximum vibration level of 25 mm/s would be used in accordance with the vibration limit applied to blasting operations in Hong Kong by Civil Engineering and Development Department (CEDD). It is proposed that vibration levels should be controlled within a peak particle velocity (ppv) limit of 25mm/s measured inside buildings, to prevent potential damage to built heritage, i.e. Declared Monuments and Graded Historical Buildings. According to AMO, the construction vibration control proposal would be considered acceptable.

Baseline Conditions

Study Scope

6.13 The study area covers an area that stretches 300m from either side along the full length of the WIL alignment. The EIA Study Brief highlights that the cultural heritage sites to be covered should include at least declared monuments along the railway corridor including the Western Market and the exterior of Main Building of the University of Hong Kong.

6.14 The cultural heritage baseline condition has been established through a literature review and a field survey.

Archaeology

6.15 The original coastline of the northern coast of Hong Kong Island ran along Queen’s Road Central and West, Des Voeux Road Central and West (which was known as Bowring Praya) to the Praya of Kennedy Town. The original coastal area was narrow giving no place for early settlement. No old village can be found and/or recorded in the original coastal area of West Point and Kennedy Town before 1842. The coastal area to the north of the original coastline was formed from reclamations which started in 1868. The reclamation history for the study area, including the description on the original coastline as well as various stages of reclamations, is provided in Appendix 6.1.

6.16 No known sites of archaeological potential were identified in the study area. However, there is a potential that finds and remains of archaeological interests are found in those works areas which are located close to surface and with records of historical village establishments. In the project areas at which such potential are identified and that excavation works would be conducted, an archaeological watching brief would then be needed.

6.17 For this project, a review for potential sites of archaeological interests was conducted by a qualified archaeologist. The review report together with the methodology for archaeological watching brief are provided in Appendix 6.2.

Built Heritage

6.18 A baseline study on built heritage including declared monuments, pre-1950 buildings and structures as well as post-1950 buildings and structures of high architectural and historical significance within 300m from either side along the railway corridor was conducted (refer to Appendix 6.3). The scope of the field survey includes the following:

§ Recording of identified built heritage features.

§ Interviews with local informants, residents and elders, if necessary. The interviews should aim to gather information, such as cultural and historical background of the buildings and structures, as well as historical events associated with the built heritage features.

6.19 Systematic documentation of all recorded features to be presented in this report include:

§ Photographic records of buildings or structures including the exterior (the elevations of all faces of the building premises, the roof, close up for special architectural details) and the interior (special architectural details) where possible;

§ Written descriptions of recorded features, e.g. age of the building or structure, details of architectural features, condition of the building or structure, past and present uses, architectural appraisal, notes on any modifications, direction faced and associations with historical or cultural events or individuals.

Built Heritage Resources

6.20 Details of the cultural heritage resources in the study area and their locations are presented in the Cultural Heritage Baseline Report in Appendix 6.3, and the key resources are highlighted below.

Declared Monuments

6.21 Five Declared Monuments are identified in or within the vicinity of the Study Area. They are:

§ Western Market at 323 Des Voeux Road Central (#4)

§ Main Building of St. Stephen’s Girls’ College at 2 Lyttelton Road (#26)

§ Tang Chi Ngong Building of the University of Hong Kong (#40)

§ Hung Hing Ying Building of the University of Hong Kong (#50)

§ Main Building of the University of Hong Kong (#51)

Graded Historical Buildings

6.22 Seventeen graded historical buildings are identified in or within the vicinity of the Study Area. They are:

§ Kwong Fuk Tsz (Pak Shing Temple) at No. 40 Tai Ping Shan Street, Grade II Historical Building (#13)

§ Old Upper Levels Police Station at No.1 F High Street (now used as Crime Wing Hong Kong Island Regional Headquarter), Grade III Historical Building (#22)

§ Façade of the Old Mental Hospital at No. 2 High Street (now used as Sai Ying Pun Community Complex), Grade I Historical Building (#24)

§ Old Lunatic Asylum at No. 45 Eastern Street (now used as Eastern Street Methadone Clinic, Grade II Historical Building (#27)

§ Old Tsan Yuk Maternity Hospital at No. 104 Western Street (now used as the Western District Community Centre), Grade III Historical Building (#34)

§ Kau Yan Church at No. 97A High Street, Grade III Historical Building (#35)

§ King’s College at No. 63A Bonham Road, Grade II Historical Building (#38)

§ Fung Ping Shan Building, the University of Hong Kong at Pok Fu Lam Road, Grade II Historical Building (#45)

§ Two Workmen’s Quarters (Grade III Historical Building), and a Bungalow (Grade I Historical Building), West Point Filters at 50 Kotewall Road (#47)

§ St. Louis School East Wing Block A at No. 179 Third Street, Grade III Historical Building (#48)

§ Senior Staff Quarters (Grade II Historical Building), and Workmen’s Quarters and Treatment Works Building, Elliot Pumping Station and Filters at Pok Fu Lam Road (Grade III Historical Buildings) (#53)

§ Ex-Western Fire Station at No.14 Belcher’s Street, Kennedy Town (now used as Po Leung Kuk Chan Au Big Yan Home for the Elderly), Grade III Historical Building (#55)

§ Lo Pan Temple, No. 15 Ching Lin Terrace, Kennedy Town, Grade I Historical Building (#56)

6.23 In addition to Declared Monuments and graded historic buildings, buildings and structures which are not yet graded but of high architectural and historical significance were also identified. Details of these buildings are presented in Appendix 6.3.

Identification of Potential Impacts

Construction Phase

6.24 Details of project design and construction works are described in Section 2. Any heritage resources located within close proximity to work areas or railway alignment may be impacted through:

§ Direct impact to historic buildings (e.g. demolition) and sites of archaeological potential (e.g. excavation)

§ Indirect vibration impact to historic buildings that may lead to structural damage or interference of normal activities, such as due to tunnel boring or drill and blast activities during construction phase

§ Indirect visual impact to historic buildings due to construction works e.g. excavation works at surface.

Operation Phase

6.25 Impact on cultural heritage during operational phase of the Project would include:

§ Indirect visual impact associated with alteration in surrounding environment of the historical structures due to the above-ground structures of the Project.

§ Indirect vibration impact to historic buildings from train movements during operation phase.

Evaluation of Potential Impacts

Construction Phase

Archaeology

6.26 According to records of Antiquities and Monuments Office, no known sites of archaeological potential were identified within the WIL Project boundary.

6.27 A desk-based review was undertaken to gather known information regarding the study area (refer to Appendix 6.2). The information reviewed included geotechnical, geological and geomorphological, previous archaeological investigations, current and previous land use, historical records, maps and aerial photographs. The objective of the desk-based review was to identify areas of archaeological potential as well as to eliminate areas which have known severe disturbances.

6.28 Based on the review results (Appendix 6.2), a watching brief is recommended, as a precautionary measure, for the identification of any historical finds in the following works areas which might have a potential for finds and remains of archaeological interest to be found, considering geology, topography and landuse:

§ Works Area C at Kennedy Town Playground

§ Works Area H at the Belcher’s

§ Works Area I near Pok Fu Lam Road Flyover

§ Works Area J at Hill Road Rest Garden

§ Works Area J1 at Hill Road

§ Works Area J2 at Whitty Street Public Toilet

§ Works Area J3 at the University of Hong Kong West Gate

§ Works Area M at the basket ball court of King George V Memorial Park

§ Works Area M2 at David Lane Sitting Out Area

6.29 The watching brief must be undertaken by a qualified archaeologist who must apply to the Antiquities Authority for a Licence (it should be noted that the time for processing the licence application will be no less than two months). Details of the frequency of inspection will be provided to AMO for review and comment once the detailed construction programme has been finalised. The archaeologist should liaise with the contractor with respect to details of the construction programme. The contractor must immediately inform the archaeologist and the AMO if any significant archaeological deposits are identified during the course of the construction works. Requirements of the archaeological watching brief can be found in Appendix 6.2.

Built Heritage

6.30 The proposed WIL will be an underground railway system and therefore any potential cultural heritage impacts would be limited to surface works with an interface with the resources. Potential impacts have been carefully considered during the development of the project design to avoid and minimise impacts on important cultural heritage resources.

Direct Impact

6.31 According to the preliminary design proposal, there were no plans of demolition of any declared monuments or graded historic buildings. Therefore no direct impact on the identified heritage resources is envisaged.

Indirect Impact

6.32 Either drill and blast or tunnel boring method would be used for tunnel formation along the WIL. Blasting would cause vibrations which will be transmitted to the environs. The duration of blasting is very short and infrequent, however, if sufficiently strong, these vibrations may cause damage to structures. The vibration levels resulted from blasting would generally be higher than those generated from tunnel boring although the vibration levels could be controlled to acceptable levels by limiting the size of the blast. In view of this, indirect vibration impact induced by blasting was considered in the present assessment as the worst case scenario.

6.33 MTRC commissioned Wilson, Crokett & Associates, Limited (WCAL) to conduct a study of vibration impacts from tunnel formation along WIL by drill and blast. According to this study, it was reported that to prevent causing damage to buildings/structures through vibration, the basic approach would be to adjust charge weight per delay along the alignment so that the maximum vibration level could be controlled within a peak particle velocity (ppv) limit of 25mm/s measured inside buildings. This construction vibration control proposal was considered acceptable according to AMO. The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.

6.34 Charge weights per delay at representative locations along the WIL were assessed in the WCAL’s study. Assuming 95% confidence bound, the most restrictive blasting would occur near KET, where the charge weight per delay could not exceed about 0.5kg. The next most restrictive location would be near SHW, where the charge weight per delay could not exceed about 1.25kg. Projections for blasting along the adits indicated quite small charge weights per delay would be required in a number of locations. This may not be a problem, on account of the smaller quantity of blasting required for adit construction. Charge weights are controlled under blasting permit issued by the Mines Division of Civil Engineering and Development Department.

6.35 An environmental monitoring and audit (EM&A) programme for vibration impacts will be in place to check no exceedance of the vibration limit during construction. An Event and Action plan would be established to determine any necessary remedial measures in case of exceedance of the vibration limit. EM&A results will be documented in regular EM&A reports.

6.36 The construction vibration control requirement will be incorporated into relevant contracts for the construction of WIL. The contractor is required to make proposals for blasting and to monitor and report the results of his blasting, including ground-borne vibration, in accordance with conditions attached to permits to use explosives by Mines Division of CEDD. Should an exceedance of the vibration limit occur, the contractor is required to immediately adjust his blasting proposals to return ground-borne vibrations to below the limiting value.

6.37 It is envisaged that, through the control of vibration levels from the proposed construction work, adverse impact on the identified heritage resources would not arise.

6.38 All aboveground structures to be constructed under this Project would be remote from the identified heritage buildings except the Old Lunatic Asylum at No. 45 Eastern Street. The Old Lunatic Asylum, which is now used as Eastern Street Methadone Clinic, is located at a horizontal distance of about 3m away from the proposed SYP Entrance C. Indirect visual impact to this graded historical building due to surface construction works at this location would be expected. Hoarding would be erected along the boundary of this works area. Therefore, adverse visual impact due to the carrying out of surface works could be screened. The hoardings will be sensibly designed (Table 6.1 refers) such that the temporary visual impact during construction phase could be reduced. With the mitigation measures as proposed in Table 6.1, it is envisaged the construction phase visual impact would be temporary and could be mitigated to an acceptable level.

6.39 Potential indirect impacts including vibration and visual impacts on cultural heritage sites during construction phase would be temporary, and are discussed further in Table 6.1. Photomontages illustrating the typical design of aboveground structures including entrances, Kennedy Town Station and vent shafts are provided in the landscape and visual impact assessment chapter (Figures 5.7.2-5.7.6). Based on the preliminary design information, temporary change of access to the identified heritage sites would not be envisaged.

6.40 As indicated in Table 6.1, there are no aboveground structures to be built in the vicinity of the Main Building of the University of Hong Kong which is a Declared Monument. The UNI Station will be constructed underground. Also, the slant distance between the rail alignment and this Declared Monument would be large (over 70m). With this buffer distance, it would be unlikely that the construction of WIL would result in any adverse impact on this monument building.

Table 6.1 Potential Indirect Impact on Built Heritage Sites during Construction Phase

Photo Ref	Cultural Heritage Site	Grading Information	Figure No	Distance from the Closest Works Area (m)			Scope of Works at the Closest Works Area	Potential Indirect Impact and Impact Level	Proposed Mitigation Measures	Implementation Agent
				Horizontal	Vertical	Slant
4	Western Market	Declared Monument	Fig.6.2	30	30	42	Rail tunnel	- Works at this location would include the construction of WIL rail tunnel to join the Island Line within the existing Sheung Wan crossover box. The rail tunnel will be constructed at about 30 m below the local ground level. Adverse vibration impacts resulted from tunnel boring or blasting would not be envisaged at such a large separation distance. - Only underground works involved. No adverse visual impacts envisaged.	- Through the control of vibration levels from the proposed construction works, vibration impact could be further reduced and no adverse impact would be expected at this monument building.	Project Proponent / Contractor
8	No. 1 Queen’s Road West, West Point	Not yet graded	Fig.6.2	112	37	118	Rail tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
11	Shui Yuet Temple at 7 Tai Ping Shan Street	Not yet graded	Fig.6.3	270	43	273	Rail tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.
12	Kwun Yin Temple at 34 Tai Ping Shan Street	Not yet graded	Fig.6.3	292	52	297	Rail tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.
13	Kwong Fuk Tsz (Pak Shing Temple) at No.40 Tai Ping Shan Street	Grade II	Fig.6.3	276	45	280	Rail tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.
20	No. 153 Queen’s Road West, West Point	Not yet graded	Fig.6.3	96	33	101	Rail tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.
21	Sai Ying Pun Jockey Club Polyclinic at 32 Hospital Road	Not yet graded	Fig.6.3	32	38	50	Entrance adit	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.
22	Old Upper Levels Police Station at No.1F High Street (now used as Crime Wing Hong Kong Island Regional Headquarter)	Grade III	Fig.6.3	144	78	164	Entrance adit	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.
23	No. 36 Eastern Street, West Point	Not yet graded	Fig.6.4	0	40	40	Rail tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
24	Façade of the Old Mental Hospital at No.2 High Street (now used as Sai Ying Pun Community Complex)	Grade I	Fig.6.4	22	5	23	Entrance adit & SYP Entrance C	Entrance adit: - Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control. SYP Entrance C: - David Trench Rehabilitation Centre would be demolished prior to the construction of the entrance. The demolition works would be carried out at more than 20m away from the façade of the Old Mental Hospital. Impact due to demolition works would be minor with this separation distance. - Excavation would be conducted at surface. - Intervening landscape adjacent to this building includes urban structures and road. - Visual impact during construction phase would be temporary and could be minimized by erecting sensitively designed hoardings.	Entrance adit: - Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation. SYP Entrance C: - Decorative screen hoardings designed in a manner that responds to the existing urban context should be erected to mitigate the temporary visual impacts during construction phase. - The hoardings to be erected along the works boundary could also ameliorate the temporary impact due to demolition works at the David Trench Rehabilitation Centre.	Project Proponent / Contractor
25	Bonham Road Government Primary School at 9A Bonham Road	Not yet graded	Fig.6.5	18	6	19	SYP Entrance C	- Excavation would be conducted at surface. - Intervening landscape adjacent to this building includes urban structures and road. - Visual impact during construction phase would be temporary and could be minimized by erecting sensitively designed hoardings.	Decorative screen hoardings designed in a manner that responds to the existing urban context should be erected to mitigate the temporary visual impacts during construction phase.	Project Proponent / Contractor
26	Main Building of St. Stephen's Girls’ College	Declared Monument	Fig.6.5	64	72	96	Entrance adit	- Works at this location would include the construction of both westbound and eastbound rail tunnels. The rail tunnels will be constructed at about 72m below the local ground level of this monument building. Adverse vibration impacts resulted from tunnel boring or blasting would not be envisaged at such a large separation distance. - Only underground works involved. No adverse visual impacts envisaged.	- Through the control of vibration levels from the proposed construction works, vibration impact could be further reduced and no adverse impact would be expected at this monument building.	Project Proponent / Contractor
27	Old Lunatic Asylum at No.45 Eastern Street (now used as Eastern Street Methadone Clinic)	Grade II	Fig.6.4	3	11	11	Entrance adit & SYP Entrance C	Entrance adit: - Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control. SYP Entrance C: - David Trench Rehabilitation Centre would be demolished prior to the construction of the entrance. The demolition works would be carried out 3m away from the Old Lunatic Asylum. Impact due to demolition works would need to be mitigated. - Excavation would be conducted at surface. - Intervening landscape adjacent to this building includes urban structures and road. - Visual impact during construction phase would be temporary and could be minimized by erecting sensitively designed hoardings.	Entrance adit: - Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation. SYP Entrance C: - Decorative screen hoardings designed in a manner that responds to the existing urban context should be erected to mitigate the temporary visual impacts during construction phase. - The hoardings to be erected along the works boundary could also ameliorate the temporary impact due to demolition works at the David Trench Rehabilitation Centre.	Entrance adit: Project Proponent / Contractor Contractor
28	Nos. 18-24 Third Street, West Point	Not yet graded	Fig.6.4	0	45	45	Entrance adit	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
29	No. 207 Des Voeux Road West	Not yet graded	Fig.6.6	84	13	85	SYP Entrance B3	- Excavation would be conducted at surface. - Intervening landscape adjacent to this building includes urban structures and road. - Visual impact during construction phase would be temporary and could be minimized by erecting sensitively designed hoardings.	Decorative screen hoardings designed in a manner that responds to the existing urban context should be erected to mitigate the temporary visual impacts during construction phase.	Project Proponent / Contractor
30	Prewar Buildings (Nos 1-2 and 7-12, Yu Lok Lane, West Point) under the Development Project of Yu Lok Lane and Centre Street of the Urban Renewal Authority	Not yet graded	Fig.6.7	8	57	58	Entrance adit	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
31	No. 35 Bonham Road, Mid Levels	Not yet graded	Fig.6.7	0	77	77	SYP Station	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
32	Sheung Fung Lane Earth Shrine at Sheung Fung Lane	Not yet graded	Fig.6.4	30	12	32	Entrance adit	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
33	Public Bathhouse at Second Street	Not yet graded	Fig.6.7	52	4	52	SYP Entrance B1	- Excavation would be conducted at surface. - Intervening landscape adjacent to this building includes urban structures and road. - Visual impact during construction phase would be temporary and could be minimized by erecting sensitively designed hoardings.	Decorative screen hoardings designed in a manner that responds to the existing urban context should be erected to mitigate the temporary visual impacts during construction phase.	Project Proponent / Contractor
34	Old Tsan Yuk Maternity Hospital at No.104 Western Street (now used as the Western District Community Centre)	Grade III	Fig.6.7	72	5	72	SYP Entrance B1	- Excavation would be conducted at surface. - Intervening landscape adjacent to this building includes urban structures and road. - Visual impact during construction phase would be temporary and could be minimized by erecting sensitively designed hoardings.	Decorative screen hoardings designed in a manner that responds to the existing urban context should be erected to mitigate the temporary visual impacts during construction phase.	Project Proponent / Contractor
35	Kau Yan Church at No.97A High Street	Grade III	Fig.6.7	100	16	101	Entrance adit	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
36	Western Police Station and Western Police Married Quarters at Des Voeux Road West	Not yet graded	Fig.6.6	84	5	84	SYP Entrance B3	- Excavation would be conducted at surface. - Intervening landscape adjacent to this building includes urban structures and road. - Visual impact during construction phase would be temporary and could be minimized by erecting sensitively designed hoardings.	Decorative screen hoardings designed in a manner that responds to the existing urban context should be erected to mitigate the temporary visual impacts during construction phase.	Project Proponent / Contractor
37	Western Magistracy at Pok Fu Lam Road	Not yet graded	Fig.6.6	76	4	76	Entrance adit	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
38	King's College at No.63A Bonham Road	Grade II	Fig.6.7	24	77	80	Rail tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
39	Chinese Rhenish Church (Lai Yin Church) at Bonham Road	Not yet graded	Fig.6.9	0	80	80	Rail tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
40	Tang Chi Ngong Building of the University of Hong Kong	Declared Monument	Fig.6.9	0	105	105	Rail tunnel	- Works at this location would include the construction of both westbound and eastbound rail tunnels. The rail tunnels will be constructed at about 110m below the local ground level of this monument building. Adverse vibration impacts resulted from tunnel boring or blasting would not be envisaged at such a large separation distance. - Only underground works involved. No adverse visual impacts envisaged.	- Through the control of vibration levels from the proposed construction works, vibration impact could be further reduced and no adverse impact would be expected at this monument building.	Project Proponent / Contractor
41	Elliot Hall and May Wing of the University of Hong Kong at Pok Fu Lam Road	Not yet graded	Fig.6.10	104	131	167	Rail tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
42	Victoria Battery at No. 1 University Drive, Pok Fu Lam Road (now used as the Residence of the Chancellor of the University of Hong Kong)	Not yet graded	Fig.6.10	218	164	273	Rail tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
43	Li Sing Primary School and Western Dental Clinic at High Street	Not yet graded	Fig.6.7	154	51	162	Rail tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
44	Caritas Ling Yuet Sin Canossian Kindergarten at No.54 Pok Fu Lam Road	Not yet graded	Fig.6.7	118	60	132	Rail tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
45	Fung Ping Shan Building, the University of Hong Kong at Pok Fu Lam Road	Grade II	Fig.6.9	0	77	77	Rail tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
47	Two Workmen's Quarters (Grade III Historical Buildings) and A Bungalow (Grade I Historical Building), West Point Filters at No. 50 Kotewall Road	Workmen’s Quarters Grade III & Bungalow Grade I	Fig.6.10	268	163	313	Rail tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
48	St Louis School East Wing Block A at No.179 Third Street	Grade III	Fig.6.8	38	28	47	Entrance adit	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
49	St Stephen's Church at 71 Bonham Road	Not yet graded	Fig.6.8	74	65	98	Rail tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
50	Hung Hing Ying Building of the University of Hong Kong	Declared Monument	Fig.6.8	34	71	79	Rail tunnel	- Works at this location would include the construction of both westbound and eastbound rail tunnels. The rail tunnels will be constructed at about 76m below the local ground level of this monument building. Adverse vibration impacts resulted from tunnel boring or blasting would not be envisaged at such a large separation distance. - Only underground works involved. No adverse visual impacts envisaged.	- Through the control of vibration levels from the proposed construction works, vibration impact could be further reduced and no adverse impact would be expected at this monument building.	Project Proponent / Contractor
51	Main Building of the University of Hong Kong	Declared Monument	Fig.6.9	0	72	72	Rail tunnel	- Works at this location would include the construction of both westbound and eastbound rail tunnels. The rail tunnels will be constructed at about 77m below the local ground level of this monument building. Low vibration impacts resulted from tunnel boring or blasting would be envisaged with this large separation distance, and could be further minimized through vibration control. - Only underground works involved. No adverse visual impacts envisaged.	- Through the control of vibration levels from the proposed construction works, vibration impact could be further reduced and no adverse impact would be expected at this monument building. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
52	St Anthony's Catholic Church at Pok Fu Lam Road	Not yet graded	Fig.6.8	0	28	28	Entrance adit	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
53	Senior Staff Quarters, Workmen' s Quarters and Treatment Works Building, Elliot Pumping Station and Filters at Pok Fu Lam Road	Senior Staff Quarters Grade II, Others Grade III	Fig.6.11 & 6.13	0	92	92	UNI Station	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
54	Air Raid Tunnels at Former Belcher's Battery at Belcher's Street	Not yet graded	Fig.6.11, 6.12 & 6.13	0	10	10	UNI Station, Entrance adit & Construction adit	- Only underground works involved. No adverse visual impacts envisaged. - Excavation of adits will be carried out underground, and the works would not encroach onto the remaining underground structures of Air Raid Tunnels. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
55	Ex-Western Fire Station at No.14 Belcher's Street, Kennedy Town (now used as Po Leung Kuk Chan Au Big Yan Home for the Elderly)	Grade III	Fig.6.12	0	32	32	Entrance adit & Construction adit	- Only underground works involved. No adverse visual impacts envisaged. - The adits will be constructed in rock well below the probable pad footing foundation of this graded historical building. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
56	Lo Pan Temple, No. 15 Ching Lin Terrace, Kennedy Town	Grade I	Fig.6.13	0	56	56	Rail tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
57	Hon Wah Middle School at Ching Lin Terrace	Not yet graded	Fig.6.13	0	46	46	Rail tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
58	Fok Hing Tong, Hong Kong Society for the Promotion of Virtue at 8-9 Tai Pak Terrace	Not yet graded	Fig.6.13	62	35	71	Rail tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
59	St. Luke's Chapel at No.47 Victoria Road	Not yet graded	Fig. 6.15	142	33	146	Vent shaft	- Excavation would be conducted at surface. - Intervening landscape adjacent to this building includes urban structures and road. - Visual impact during construction phase would be temporary and could be minimized by erecting sensitively designed hoardings.	Decorative screen hoardings designed in a manner that responds to the existing urban context should be erected to mitigate the temporary visual impacts during construction phase.	Project Proponent / Contractor
60	The Arch and Foundation Stone of Tung Wah Smallpox Hospital at the Sai Ning Street	Not yet graded	Fig. 6.15	152	34	156	Vent shaft	- Excavation would be conducted at surface. - Intervening landscape adjacent to this building includes urban structures and road. - Visual impact during construction phase would be temporary and could be minimized by erecting sensitively designed hoardings.	Decorative screen hoardings designed in a manner that responds to the existing urban context should be erected to mitigate the temporary visual impacts during construction phase.	Project Proponent / Contractor
61	City of Victoria Boundary Stone at Victoria Road	Not yet graded	Fig. 6.15	112	7	112	Overrun tunnel	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
62	The Old Masonry Walls at Forbes Street	Not yet graded	Fig.6.14	0	14	14	Rail tunnel & KET Station	Rail tunnel: - Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control. KET Station: - Cut and cover works would be conducted at surface. - Intervening landscape adjacent to this building includes urban structures and road. - Visual impact during construction phase would be temporary and could be minimized by erecting sensitively designed hoardings.	Rail tunnel: - Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation. KET Station: - Decorative screen hoardings designed in a manner that responds to the existing urban context should be erected to mitigate the temporary visual impacts during construction phase.	Project Proponent / Contractor Project Proponent / Contractor
63	The masonry walls at King George V (KGV) Memorial Park, Hospital Road	Not yet graded	Fig.6.4	0	58	58	Entrance adit	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
64	Mount Davis Forts	Not yet graded	Fig 6.17	50	13	52	Underground magazine	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor
65	Jubilee Battery	Not yet graded	Fig 6.16	75	83	112	Underground magazine	- Only underground works involved. No adverse visual impacts envisaged. - Vibration impacts resulted from tunnel boring or blasting could be minimized through vibration control.	- Through the control of vibration levels from the proposed construction works, adverse impact due to vibration from the proposed construction works would not arise. - The location and installation of the monitoring stations should be discussed and agreed with AMO before installation.	Project Proponent / Contractor

Operational Phase

Built Heritage

6.41 There will be generally no adverse visual impacts to identified built heritage resources during the operational stage as the rail line is located underground and will not be visible. Some of the heritage buildings would have line of sight to the above-ground structures including the vent shafts and entrances associated with WIL. As those structures would be incorporated into an existing urban setting sympathetic to environmental character of the site, as discussed in Table 6.2, no adverse visual impact would be envisaged. Based on the preliminary design information, change of access to the identified heritage sites would not be envisaged.

6.42 Potential vibration impact due to operational trains have been evaluated with reference to the separation distance between the identified heritage structures and the corresponding rail track closest to them (Table 6.3 below refers), having considered that vibration level would be reduced over distance. Since most of the rail alignment would be located in deep tunnel, vibration impact due to the WIL trains would be generally minor.

6.43 According to Table 6.3, the smallest slant separation distance from the identified heritage structures (i.e. the tree walls at Forbes Street) to the nearest rail track (i.e. eastbound track at KET Station) would be over 20m (~23m). At this distance, it would be considered that the adverse vibration impact on this heritage structure from operational trains would not be expected. The five Declared Monuments identified within the study area, including the Western Market, Main Building of St. Stephen’s Girls’ College, and Tang Chi Ngong Building, Hung Hing Ying Building and the Main Building of the University of Hong Kong, would be located at about 28-207m away from the nearest rail track of WIL. At these buffer distances, no adverse vibration impact on these monument structures due to the operation of WIL train would be expected. For other heritage buildings identified within the study area, no insurmountable vibration impact from operational trains would be envisaged as sufficient buffer distance between buildings and rail track would be maintained.

Table 6.2 Potential Indirect Visual Impact on Cultural Heritage Sites during Operational Phase

Above-ground Structures	Photo Ref	Cultural Heritage Site	Grading Information	Figure No	Distance from the Nearest Above-ground Structures (m)	Indirect Impact and Impact Level	Proposed Mitigation Measures	Implementation Agent / Period
SYP
Entrance A1 & Vent-Shaft Y	21	Sai Ying Pun Jockey Club Polyclinic at 32 Hospital Road	Not yet graded	Fig.6.2	76	- Visual impacts would be envisaged during operation phases	The vent shaft would be incorporated into an existing urban setting sympathetic to environmental character of the site thereby minimizing visual impacts on the historical building to acceptable level.	Project Proponent / Design Phase
Entrance A2	N/A	N/A	N/A	N/A	N/A	- Structures not visible to any identified historical buildings	N/A	N/A
Entrance B1	33	Public Bathhouse at Second Street	Not yet graded	Fig.6.4	52	- Visual impacts would be envisaged during operation phases	The vent shaft would be incorporated into an existing urban setting sympathetic to environmental character of the site thereby minimizing visual impacts on the historical building to acceptable level.	Project Proponent / Design Phase
Entrance B2	37	Western Magistracy at Pok Fu Lam Road	Not yet graded	Fig.6.4	96	- Visual impacts would be envisaged during operation phases	The vent shaft would be incorporated into an existing urban setting sympathetic to environmental character of the site thereby minimizing visual impacts on the historical building to acceptable level.	Project Proponent / Design Phase
Entrance B3	N/A	N/A	N/A	N/A	N/A	- Structures not visible to any identified historical buildings	N/A	N/A
Entrance C & Vent Shaft-Z	24	The Façade of the Old Mental Hospital at No.2 High Street (now used as Sai Ying Pun Community Complex)	Grade I	Fig.6.2	23	- Visual impacts would be envisaged during operation phases.	The entrance and vent shaft would be incorporated into an existing urban setting sympathetic to environmental character of the site thereby minimizing visual impacts on the historical building to acceptable level.	Project Proponent / Design Phase
	25	Bonham Road Government Primary School at 9A Bonham Road	Not yet graded	Fig.6.2	18
	26	Main Building of St. Stephen's Girls’ College	Declared Monument	Fig.6.3	85	- It would be unlikely that the entrance and vent shaft would result in adverse visual impacts on this historical building as it would be screened by high-rise residential buildings at Park Road.	Nil	N/A
	27	Old Lunatic Asylum at No.45 Eastern Street (now used as Eastern Street Methadone Clinic)	Grade II	Fig.6.2	5	- Visual impacts would be envisaged during operation phases.	The entrance and vent shaft would be incorporated into an existing urban setting sympathetic to environmental character of the site thereby minimizing visual impacts on the historical building to acceptable level. Planting will be encouraged where practicable to grow against the lower portion of the aboveground structures to soften the visual impact.	Project Proponent / Design Phase
UNI
Entrance A	N/A	N/A	N/A	N/A	N/A	Structures not visible to any identified historical buildings	N/A	N/A
Entrance B1	48	St Louis School East Wing Block A at No.179 Third Street	Grade III	Fig 6.4	40	- Visual impacts would be envisaged during operation phases.	The entrance and vent shaft would be incorporated into an existing urban setting sympathetic to environmental character of the site thereby minimizing visual impacts on the historical building to acceptable level.	Project Proponent / Design Phase
	52	St Anthony's Catholic Church at Pok Fu Lam Road	Not yet graded	Fig 6.4	48	- Visual impacts would be envisaged during operation phases.	The entrance and vent shaft would be incorporated into an existing urban setting sympathetic to environmental character of the site thereby minimizing visual impacts on the historical building to acceptable level.	Project Proponent / Design Phase
Entrance B2	N/A	N/A	N/A	N/A	N/A	- Structures not visible to any identified historical buildings	N/A	N/A
Vent-Shaft Y
Entrance C1 Chiller Plant & Vent Shafts Z1-Z4
Entrance C2	55	Ex-Western Fire Station at No.14 Belcher's Street, Kennedy Town (now used as Po Leung Kuk Chan Au Big Yan Home for the Elderly)	Grade III	Fig. 6.5	28	- Visual impacts would be envisaged during operation phases.	The entrance and vent shaft would be incorporated into an existing urban setting sympathetic to environmental character of the site thereby minimizing visual impacts on the historical building to acceptable level.	Project Proponent / Design Phase
KET
KET Station	62	The Old Masonry Walls at Forbes Street	Not yet graded	Fig.6.6	18	- Direct impact on walls avoided through adjustment of the station location and works area. - Visual impacts would be envisaged during operation phases.	The station, entrances and vent shaft would be incorporated into an existing urban setting sympathetic to environmental character of the site thereby minimizing visual impacts on the historical building to acceptable level.	Project Proponent / Design Phase
Vent Shaft-Y&Z
Entrances A, B & C
Vent Shaft at Ex-Police Quarters	N/A	N/A	N/A	N/A	N/A	- Structures not visible to any identified historical buildings	N/A	N/A

Table 6.3 Potential Indirect Vibration Impact on Cultural Heritage Sites during Operational Phase

Under-ground Structures	Photo Ref	Cultural Heritage Site	Grading Information	Figure No	Distance from the Nearest Rail Track (m)			Indirect Impact and Impact Level	Proposed Mitigation Measures	Implementation Agent / Period
					Horizontal	Vertical	Slant
Crossover Box in tunnel	4	Western Market	Declared Monument	Fig.6.2	6	28	28	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
Rail Tunnel	8	No. 1 Queen’s Road West, West Point	Not yet graded	Fig.6.2	112	30	116	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	11	Shui Yuet Temple at 7 Tai Ping Shan Street	Not yet graded	Fig.6.3	270	44	274	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	12	Kwun Yin Temple at 34 Tai Ping Shan Street	Not yet graded	Fig.6.3	292	52	297	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	13	Kwong Fuk Tsz (Pak Shing Temple) at No.40 Tai Ping Shan Street	Grade II	Fig.6.3	276	46	280	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	20	No. 153 Queen’s Road West, West Point	Not yet graded	Fig.6.3	96	33	101	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	21	Sai Ying Pun Jockey Club Polyclinic at 32 Hospital Road	Not yet graded	Fig.6.3	78	31	84	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	22	Old Upper Levels Police Station at No.1F High Street (now used as Crime Wing Hong Kong Island Regional Headquarter)	Grade III	Fig.6.3	184	80	200	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	23	No. 36 Eastern Street, West Point	Not yet graded	Fig.6.4	0	45	45	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	24	Façade of the Old Mental Hospital at No.2 High Street (now used as Sai Ying Pun Community Complex)	Grade I	Fig.6.4	10	82	83	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	25	Bonham Road Government Primary School at 9A Bonham Road	Not yet graded	Fig.6.5	136	88	162	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	26	Main Building of St. Stephen's Girls’ College	Declared Monument	Fig.6.5	174	111	207	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	27	Old Lunatic Asylum at No.45 Eastern Street (now used as Eastern Street Methadone Clinic)	Grade II	Fig.6.4	70	71	100	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	28	Nos. 18-24 Third Street, West Point	Not yet graded	Fig.6.4	12	61	62	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	29	No. 207 Des Voeux Road West	Not yet graded	Fig.6.6	216	36	219	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	30	Prewar Buildings (Nos 1-2 and 7-12, Yu Lok Lane, West Point) under the Development Project of Yu Lok Lane and Centre Street of the Urban Renewal Authority	Not yet graded	Fig.6.7	24	55	60	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
SYP Station Box	31	No. 35 Bonham Road, Mid Levels	Not yet graded	Fig.6.7	0	86	86	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
Rail Tunnel	32	Sheung Fung Lane Earth Shrine at Sheung Fung Lane	Not yet graded	Fig.6.4	132	64	146	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	33	Public Bathhouse at Second Street	Not yet graded	Fig.6.7	160	58	170	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	34	Old Tsan Yuk Maternity Hospital at No.104 Western Street (now used as the Western District Community Centre)	Grade III	Fig.6.7	148	66	162	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	35	Kau Yan Church at No.97A High Street	Grade III	Fig.6.7	116	70	136	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	36	Western Police Station and Western Police Married Quarters at Des Voeux Road West	Not yet graded	Fig.6.6	278	42	281	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	37	Western Magistracy at Pok Fu Lam Road	Not yet graded	Fig.6.6	230	52	236	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	38	King's College at No.63A Bonham Road	Grade II	Fig.6.7	28	77	82	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	39	Chinese Rhenish Church (Lai Yin Church) at Bonham Road	Not yet graded	Fig.6.9	0	85	85	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	40	Tang Chi Ngong Building of the University of Hong Kong	Declared Monument	Fig.6.9	0	110	110	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	41	Elliot Hall and May Wing of the University of Hong Kong at Pok Fu Lam Road	Not yet graded	Fig.6.10	104	137	172	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	42	Victoria Battery at No. 1 University Drive, Pok Fu Lam Road (now used as the Residence of the Chancellor of the University of Hong Kong)	Not yet graded	Fig.6.10	220	170	278	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	43	Li Sing Primary School and Western Dental Clinic at High Street	Not yet graded	Fig.6.7	156	51	164	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	44	Caritas Ling Yuet Sin Canossian Kindergarten at No.54 Pok Fu Lam Road	Not yet graded	Fig.6.7	122	59	135	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	45	Fung Ping Shan Building, the University of Hong Kong at Pok Fu Lam Road	Grade II	Fig.6.9	0	77	77	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	47	Two Workmen's Quarters (Grade III Historical Buildings) and A Bungalow (Grade I Historical Building), West Point Filters at No. 50 Kotewall Road	Workmen’s Quarters Grade III & Bungalow Grade I	Fig.6.10	272	166	319	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	48	St Louis School East Wing Block A at No.179 Third Street	Grade III	Fig.6.8	130	54	141	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	49	St Stephen's Church at 71 Bonham Road	Not yet graded	Fig.6.8	78	59	98	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	50	Hung Hing Ying Building of the University of Hong Kong	Declared Monument	Fig.6.8	36	76	84	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	51	Main Building of the University of Hong Kong	Declared Monument	Fig.6.9	0	77	77	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	52	St Anthony's Catholic Church at Pok Fu Lam Road	Not yet graded	Fig.6.8	48	58	76	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
UNI Station Box	53	Senior Staff Quarters, Workmen' s Quarters and Treatment Works Building, Elliot Pumping Station and Filters at Pok Fu Lam Road	Senior Staff Quarters Grade II, Others Grade III	Fig.6.11 & 6.13	0	107	107	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	54	Air Raid Tunnels at Former Belcher's Battery at Belcher's Street	Not yet graded	Fig.6.11, 6.12 & 6.13	0	52	52	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
Rail Tunnel	55	Ex-Western Fire Station at No.14 Belcher's Street, Kennedy Town (now used as Po Leung Kuk Chan Au Big Yan Home for the Elderly)	Grade III	Fig.6.12	164	22	165	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	56	Lo Pan Temple, No. 15 Ching Lin Terrace, Kennedy Town	Grade I	Fig.6.13	0	60	60	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	57	Hon Wah Middle School at Ching Lin Terrace	Not yet graded	Fig.6.13	0	51	51	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	58	Fok Hing Tong, Hong Kong Society for the Promotion of Virtue at 8-9 Tai Pak Terrace	Not yet graded	Fig.6.13	66	33	74	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
Overrun Tunnel	59	St. Luke's Chapel at No.47 Victoria Road	Not yet graded	Fig. 6.15	160	1	160	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	60	The Arch and Foundation Stone of Tung Wah Smallpox Hospital at the Sai Ning Street	Not yet graded	Fig. 6.15	194	1	194	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	61	City of Victoria Boundary Stone at Victoria Road	Not yet graded	Fig. 6.15	116	3	116	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
Rail Tunnel	62	The Old Masonry Walls at Forbes Street	Not yet graded	Fig.6.14	0	23	23	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A
	63	The masonry walls at King George V (KGV) Memorial Park, Hospital Road	Not yet graded	Fig.6.4	0	58	58	Given sufficient buffer distance between the building and rail track, no adverse vibration impacts would be expected and no mitigation measures would be required.	N/A	N/A

Mitigation Measures

Construction Phase

Archaeology

6.44 As a precautionary measure, archaeological watching brief is recommended for the identification of any historical finds in the works areas, as listed in Section 6.28 and Appendix 6.2, which might have a potential for finds and remains of archaeological interest to be found.

Built Heritage

6.45 The construction vibration control limits will be followed during the construction of the WIL, and there would be no adverse vibration impacts on the historical buildings. To check that there would not be any unacceptable deviation from the set limits, compliance monitoring of vibration limits will be conducted and reported, as a requirement of EM&A programme, as described in Section 6.52-6.61 below.

6.46 Temporary visual impact during construction phase could be minimised by the use of sensibly designed hoardings. As discussed in the landscape and visual impact assessment section of this report (refer to Table 5.4 for description of the proposed construction phase landscape and visual mitigation measures), decorative screen hoarding designed to be compatible with the character of the existing environmental setting should be provided at the boundary of the works areas. This would help ameliorate the visual impact, albeit temporary, to acceptable levels.

Operation Phase

6.47 Mitigation measures recommended in Table 5.5 in relation to visual impacts would generally ameliorate potential impacts to the surrounding environment including historic sites.

6.48 No adverse vibration impacts due to operational trains were expected. No mitigation measures would be needed.

Environmental Monitoring and Audit

Construction Phase

6.49 The use of sensibly designed screen hoardings for mitigating landscape and visual impacts as proposed in Section 5 would also be recommended for reducing the potential visual impact on identified heritage buildings to acceptable levels. Based on this, environmental monitoring and audit (EM&A) requirements recommended in Section 12 for landscape and visual impacts would as well be applicable for the protection of heritage resources.

6.50 Vibration monitoring requirements at historic buildings are as follows:

Equipment, Data Monitoring & Measure

6.51 Blasting usually takes places once or twice a day. As such, monitoring equipment may either be manned, or unmanned. If it is manned, then the maximum PPV level for the duration of the blast must be available immediately after the blast, so that information can be relayed to the Contractor before the next blast. If the monitoring device is unmanned, then it must be triggered, and the results conveyed by telephone hook-up to the responsible person. The responsible person will then immediately inform the Contractor. Blasting shall be monitored at either one or two locations per blast location, as described below. The preferred equipment is an Instantel Blastmate, with the Blastmate III being the most recent.

Measurement Locations

6.52 If no identified vibration sensitive historical building is within 100m in plan of the blast location, then the monitoring location shall be directly above the blast, or as near as practicable. Thus the monitoring location shall move along the alignment together with the blasting.

6.53 If an identified vibration sensitive historical building is within 100m in plan of the blast location, then in addition to monitoring directly above the blast, a second location shall be taken up inside the identified receiver. If access inside the receiver is not possible, the second measurement shall be performed on the ground outside the identified receiver, as close to the foundation as practicable, but not closer than 1m, and along the path between the blast location and the closest point on the foundation. If more than one identified receiver is within 100m plan of the blast location, then the closest one shall be selected. Monitoring shall occur at the designated sensitive receiver for as long as the blasting is within 100m plan of the sensitive receiver, or until another receiver is closer.

6.54 All blasting shall be monitored. If blasting is scheduled for more than one location at the same time, the measurement specialist shall provide sufficient equipment to monitor, as described, all blast locations.

6.55 Monitoring would be conducted inside buildings. Monitoring stations would be set up before the work commencement and to the satisfaction of relevant authorities. The location and installation of the monitoring stations would be discussed and agreed with AMO before installation. Should any irregularities arise, the Resident Engineer should alert relevant authorities and implement proper mitigation measures accordingly, subject to the agreement of relevant authorities.

Tabulation of Data – Compliance Matrix

6.56 The Measurement Specialist shall tabulate the PPV level taken above the blast for each blast episode against: track chainage, horizontal setback, if any, vertical depth, PPV criterion (25mm/s), difference from PPV criterion, indication of compliance and time and date. Where data is taken along an adit, the distance along the adit shall replace the track chainage.

6.57 The Measurement Specialist shall tabulate the PPV level taken within or outside a monitored sensitive receiver for each blast episode against: track chainage, horizontal setback, if any, vertical depth, PPV criterion (i.e. 25mm/s measured inside the structure), difference from PPV criterion, indication of compliance and time and date. Where data is taken along an adit, the distance along the adit shall replace the track chainage.

Reporting and Action

6.58 The Measurement Specialist shall provide a copy of the updated tabulation to the Contractor after each blast episode. If the measured PPV either above the blast or at any nearby receiver is above the criteria values for three consecutive blasts, the Contractor shall take immediate corrective action by reducing the rate of forward progress, as necessary, to bring PPV levels within compliance. If upon subsequent blasting, the criteria are still exceeded, further reduction of the rate of forward progress shall occur on consecutive blasts until PPV levels are brought within compliance. If PPV levels cannot be brought within compliance after six successive non-compliant blasts, the Contractor shall cease all blasting, with recommencement subject to review by MTRC.

6.59 If the measured PPV is less than 20mm/s above the blast location and the measured PPV at any nearby sensitive receiver is less than 10mm/s within the receiver, or less than 18mm/s in the ground adjacent to the receiver, then the Contractor may increase his forward rate of progress, subject to review by MTRC.

Operation Phase

6.60 Mitigation measures recommended in Table 5.5 in relation to visual impacts would generally ameliorate potential impacts to the surrounding environment including historic sites. Hence, EM&A requirements recommended for landscape and visual impacts set out in Section 12 would as well be applicable in controlling the potential operational phase visual impact on heritage sites.

6.61 No adverse vibration impacts due to operational trains were expected. No mitigation measures and specific EM&A requirements would be required.

Conclusion

6.62 The WIL project would have no adverse impacts on the cultural heritage resources in the study area, during both construction and operation phases, with the implementation of the recommended measures.

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