The Hong Kong Special Administrative Region Government Civil Engineering and Development Department New Territories West Development Office
Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section)
Project Profile
August 2016
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Civil Engineering and Development Department Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section) Project Profile
Contents
Page 1 Basic Information 1 1.1 Project Title 1 1.2 Purpose and Nature of the Project 1 1.3 Name of Project Proponent 1 1.4 Location and Scale of Project and History of Site 1 1.5 Number and Types of Designated Projects to be Covered by the Project Profile 2 1.6 Name and Telephone Number of Contact Person 2 2 Outline of Planning and Implementation Programme 3 2.1 Planning & Implementation Programme 3 2.2 Interactions with Other Projects 3 3 Possible Impacts on the Environment 4 3.1 Construction Phase 4 3.2 Operational Phase 5 4 Major Elements of the Surrounding Environment 7 4.1 Air Quality 7 4.2 Noise 7 4.3 Water Quality 8 4.4 Hazard to Life 8 4.5 Ecology 8 4.6 Cultural Heritage 8 4.7 Landscape and Visual 9 5 Environmental Protection Measures to be Incorporated in the Design and any Further Environmental Implications 10 5.1 Construction Phase 10 5.2 Operational Phase 13 6 Use of Previously Approved EIA Reports 15
AUGUST 2016
Civil Engineering and Development Department Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section) Project Profile
Figures Figure 1 Proposed Stage 1 Cycle Track Alignment Figure 2 Locations of Representative Air/Noise Sensitive Receivers Figure 3 Locations of Water Sensitive Receivers
AUGUST 2016
Civil Engineering and Development Department Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section) Project Profile
1 Basic Information
1.1 Project Title
The project is entitled “Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section)” which forms part of the PWP Item No. 7268RS of title “Cycle Track between Tsuen Wan and Tuen Mun”.
1.2 Purpose and Nature of the Project
The purpose of this project is to design and construct a new two-way cycle track with a width of 4 metres as far as technically practicable and accompanied with footpath between Tuen Mun and So Kwun Wat with the provision of supporting facilities. The cycle track is intended primarily for recreational use and is thus considered as a recreational development.
1.3 Name of Project Proponent
The project proponent is Civil Engineering and Development Department, The Government of Hong Kong Special Administration Region.
1.4 Location and Scale of Project and History of Site
The proposed cycle track is aligned mainly along the coastline or Castle Peak Road, from the resting station proposed at So Kwun Wat Road to another resting station at Tuen Hing Road in Tuen Mun. One section of the cycle track will branch off at Sam Shing and connect to the entry/exit hub proposed at Hoi Wah Road while the other section will continue along Castle Peak Road alignment. There is also an alternative alignment that may adopt a cycle subway option along Sam Shing Street to Hoi Wing Road. The cycle track will pass by a number of residential complexes and beaches. The proposed cycle track will be approximately 4.5km long and 4m wide, together with a 2m footpath alongside. Landscape area or planters will be provided alongside the proposed cycle track where practicable. The maximum longitudinal gradient will generally be limited to 4%. The proposed cycle track will be in the form of two-way tracks. The alignment of the cycle track is presented in Figure 1. A brief description of the alignment is presented in the following sections. The cycle track starts at the road junction between Castle Peak Road and So Kwun Wat Road and will route along the eastbound of Castle Peak Road till passing Monte Carlo Villas. Then it will go towards coastline via the existing open area of Hong Kong Gold Coast Hotel located between Spring Seaview and Monte Carlo Villas. The cycle track is mainly at-grade with some retaining wall structures depending on the existing topography. The cycle track will then route along the rear periphery of Cafeteria New Beach, Cafeteria Old Beach, Kadoorie Beach and Castle Peak Beach. The route in-between will be mainly in the form of at-grade roads, except that coastal section connecting Cafeteria Old Beach, Kadoorie Beach and Castle Peak Beach and the coastal section near Sam Shing Hui will be in form of elevated road supported on viaducts or retaining walls. The cycle track will then branch off and route along Sam Shing Street to connect with the existing cycle track networks at Hoi Wing Road and the entry/exit hub proposed at Hoi Wah Road; and extend along the Castle Peak Road at Sam Shing Hui to connect with Tuen Hing Road in the form of at-grade road. The alternative alignment adopting a cycle subway option along Sam Shing Street near Hanford Garden may also be considered to connect with the existing cycle track at Hoi Wing Road and the proposed entry/exit hub at Hoi Wah Road. Key residential developments along this section include Hong Kong Gold Coast Hotel, Blessing Villa, Cafeteria New Beach, Cafeteria Old Beach, Kadoorie Beach, Castle Peak Beach, Sham Shing Estate and Chi Lok Fa Yuen.
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Civil Engineering and Development Department Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section) Project Profile
Apart from the provision of the cycle track in the above section, supporting entry/exit hub and resting stations will also be proposed along the cycle track at suitable locations. The proposed entry/exit hub will be located at Hoi Wah Road near Sam Shing Hui to accommodate supporting facilities including cycle rental facilities, repair kiosks, public toilets, refreshment kiosks, first aid kiosks and landscaped open spaces, where appropriate. Two resting stations are proposed at So Kwun Wat Road near Castle Peak Road and Tuen Hing Road with provision of open spaces, sitting out areas and cycle parking facilities. One optional resting station near Golden Beach Path car park will also be studied. The coastal section in the form of elevated cycle track connecting Cafeteria Old Beach, Kadoorie Beach and Castle Peak Beach and the coastal section near Sam Shing Hui as mentioned above will be of about 610m and 110m in length respectively. The aggregated total area of the foundations for the above coastal sections will be about 52m 2 in size.
1.5 Number and Types of Designated Projects to be Covered by the Project Profile
The project will involve the following elements which are considered to be within the categories of Items A.8 and C.12 under Part I, Schedule 2 of the Environmental Impact Assessment Ordinance (EIAO):
• Part of the proposed cycle track being more than 100m in length between abutments;
• Dredging operation due to construction of pre-bored H-piles being less than 500m from the nearest boundary of existing bathing beaches Therefore, this project is considered as a Designated Project.
1.6 Name and Telephone Number of Contact Person
Department: Civil Engineering and Development Department New Territories West Development Office New Territories West Division (2) Contact Person: Mr. CHU Wai Lun Senior Engineer/10 2417 6370 Ms. TSANG Chui-shan Engineer /21 2417 6353
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Civil Engineering and Development Department Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section) Project Profile
2 Outline of Planning and Implementation Programme
2.1 Planning & Implementation Programme
The road gazette of the project is scheduled in mid 2017. The construction works is tentatively scheduled to commence in early 2019 and to be completed in early 2022. The tentative programme for the project is proposed in Table 2.1 . Table 2.1 : Tentative implementation programme Stages Road Gazette mid 2017 Works Commencement early 2019 Works completion early 2022
2.2 Interactions with Other Projects
Nil.
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Civil Engineering and Development Department Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section) Project Profile
3 Possible Impacts on the Environment
3.1 Construction Phase
Air Quality During construction phase, construction dust impact may arise from construction activities, including site clearance, excavation and backfilling activities, material handling, transportation, piling works, retaining wall construction, wind erosion of unpaved area and stockpile, slope cutting, etc. Noise The main construction noise impact will be due to the operation of Powered Mechanical Equipment (PME) during various construction activities, such as site clearance, excavation, slope works and piling works for viaducts. Water Quality Water quality during construction phase will be due to construction site runoff, sewage effluent due to workforce on site, drainage/ water supply system/ waterworks installation and sediment release due to bridge pier construction in coastal waters potentially affecting nearby bathing beaches, e.g. Golden Beach, Cafeteria New Beach, Cafeteria Old Beach, Kadoorie Beach and Castle Peak Beach.
• Construction site runoff comprises of runoff and erosion from site surfaces, drainage channels, earth working areas and stockpiles. Wash water from dust suppression sprays and wheel washing facilities and fuel, oil, solvents and lubricants from maintenance of construction machinery and equipment also contribute to the pollutant levels of the construction runoff.
• Sewage effluents will arise from the sanitary facilities provided for the on-site construction workforce.
• The potential water quality impact associated with drainage and water mains diversion or upgrading will be from the run-off and erosion from site surfaces and earth working areas.
• Small amount of sediment will be released at the bridge pier locations in coastal water. The key water quality concerns will be the disturbance of the marine bottom sediment from piling works, causing an increase in suspended solid levels.
Waste Management Waste will potentially be generated from the construction activities, such as excavation, demolition and construction of viaduct and associated structures. Typical waste types associated with these activities comprise of construction & demolition (C&D) materials, C&D wastes, chemical waste, sewage and general refuse.
• Demolished and excavated materials will be the main components of C&D materials, including soil, sediment, fill and asphalt, of which the major source is likely from site formation works, cutting and filling slopes, pilling works and demolition works.
• C&D waste will be generated throughout the construction works from general site clearance works, tree felling, piling works and earthworks for construction of various structures.
• Chemical wastes will be in the form of solid wastes such as oil/air filters and in the form of liquid wastes such as waste oils/grease and consumed solvents.
• Sewage may arise from amenity facilities such as chemical toilets used by the construction workforce and site office’s sanitary facilities. Overnight sewage from chemical toilets will also be generated.
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Civil Engineering and Development Department Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section) Project Profile
• General wastes which will be produced on a daily basis during the construction of the cycle track, include materials like waste paper, plastic packaging as well as refuse like sewage.
Hazard to Life No potentially hazardous sites are identified in the vicinity of the project alignment. Ecology and Fisheries The primary land uses in the area within 500m of the proposed development are developed land (largely roads and development areas), plantation (primarily roadside), the open sea, intertidal channels and hillside shrubland. In the vicinity of the project area, there are recognized sites of conservation importance, including the Tai Lam Country Park which is dominated by grass land, shrubland and plantation. During the construction phase, potential impacts are likely to be in the form of habitat loss, tree felling, modifications to intertidal channels, change in water quality due to site run-off and disturbance of bottom sediments. Cultural Heritage Archaeological, historical and cultural items in the vicinity of the proposed project site but not encroached upon include buildings, structures, monuments, graves, sites and road milestone markers of historical significance and architectural or archaeological merit. Impact due to construction on the built heritage is not anticipated as none of the historic buildings identified are expected to be encroached upon or disturbed by the proposed cycle track route and associated facilities. A section of the proposed cycle track will encroach upon the boundary of So Kwun Wat Perowne Barracks Site of Archaeological Interest (SAI). According to the results of the archaeological impact assessment for the “Cycle Track between Tsuen Wan and Tuen Mun – Investigation ” initiated by the Civil Engineering and Development Department in 2010, it is concluded that the subject area has no archaeological potential. Therefore, the proposed works will not have any archaeological impact on the said SAI during the construction phrase. Land Contamination Marine sediments will be generated from the foundation works at the coastal sections near Sham Shing Hui and near the beaches and would be handled in accordance with ETWB TCW No. 34/2002. Site investigation plan will be formulated in accordance with EPD’s guidance notes, if required, to facilitate further studies in the detailed design and implementation stages. Landscape and Visual A number of existing trees will be affected by the proposed alignment. Other earthworks and construction activities will be confined within areas adjacent to the nearby structures, and therefore the landscape and visual impacts will be transient.
3.2 Operational Phase
Air Quality There will be no air emission source during the operational phase. Cycling in the metropolitan areas as well as in the topographically-confined areas will have considerable advantages to the environment. Noise
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Civil Engineering and Development Department Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section) Project Profile
As there will be no significant noise emission generated from cycling activities during operational phase, no noise impact is anticipated. Water Quality During the operational phase, runoff from the cycle track including the at-grade section, hub and resting station, viaduct sections and retaining structure sections will be conveyed into designated drainage systems. Sewage from the proposed toilet in the entry/ exit hub will also be properly conveyed into existing sewage system. Therefore, impact on water quality is not anticipated. Waste Management During the operational phase, waste will contain mainly food waste and packaging waste generated by the users of cycle track facilities. As there will be licensed waste collector to collect rubbish from refuse bins located along the cycle track, no adverse waste impact is anticipated. Hazard to Life No potentially hazardous sites are identified in the vicinity of the project alignment. Ecology and Fisheries No direct operational phase impacts are anticipated. As the human activities along the cycle track increase, there may, however, be indirect impacts by way of increased disturbance to wildlife. The main concern of such activities will be at the resting station. Cultural Heritage No impact on cultural heritage resources during the operational phase is anticipated. Land Contamination Since the cycle track will be a paved facility and the track will not directly encroach into the potentially contaminated landuse, the land contamination issue is likely to be limited. Landscape and Visual Potential impacts of the cycle track will need to be considered in respect of the visual envelope including views from local residences, roads, beaches, lookout-points, seaside such as private boats, ferries and Lantau Island etc.
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Civil Engineering and Development Department Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section) Project Profile
4 Major Elements of the Surrounding Environment
4.1 Air Quality
The representative Air Sensitive Receivers (ASRs) will consist of various types of sensitive uses including educational institutions, hospital, psychiatric centre, places of public worship, hotels, active recreational facilities, domestic premises and scattered rural village houses. Figure 2 and Table 4.1 present the location of key representative ASRs in the vicinity that are close to the works site of the Project. Table 4.1: Locations of representative air sensitive receivers ASR ID Sensitive Receivers Nature of Use ASR15 Temple at So Kwun Tan W ASR16 Aegean Coast R ASR17 Temple near Hong Kong Gold Coast W ASR18 Hong Kong Gold Coast R ASR19 Monte Carlo Villas R ASR20 Aquamarine Garden R ASR21 Castle Peak Bay Garden R ASR22 Palm Cove R ASR23 Sam Shing Temple W ASR24 The Salvation Army Sam Shing Chuen Lau Ng Ying School E ASR25 Sam Shing Estate (Chun Yu House) R ASR26 Hanford Garden Block 2 R ASR27 Alpine Garden R ASR28 Handsome Court R ASR29 Hong Kong Christian Service Pui Oi School E ASR30 Villa Tiara R ASR31 Rainbow Garden R ASR32 JC Place R ASR33 Future development near Cafeteria New Beach R Note: R – residential; E – educational; W – place of public worship
4.2 Noise
The Noise Sensitive Receivers (NSRs) include domestic premises, educational institutions, hospitals and other medical institutions, places of worship, hotels and homes for aged. The representative NSRs along the first row of the project alignment at different sections are listed in the table below. Figure 2 and Table 4.2 present the location of representative NSRs in the vicinity. Table 4.2: Locations of representative noise sensitive receivers NSR ID Sensitive Receivers Nature of Use NSR15 Temple at So Kwun Tan W NSR16 Aegean Coast R NSR17 Temple near Hong Kong Gold Coast W NSR18 Hong Kong Gold Coast R NSR19 Monte Carlo Villas R NSR20 Aquamarine Garden R NSR21 Castle Peak Bay Garden R NSR22 Palm Cove R NSR23 Sam Shing Temple W NSR24 The Salvation Army Sam Shing Chuen Lau Ng Ying School E NSR25 Sam Shing Estate (Chun Yu House) R NSR26 Hanford Garden Block 2 R
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Civil Engineering and Development Department Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section) Project Profile
NSR ID Sensitive Receivers Nature of Use NSR27 Alpine Garden R NSR28 Handsome Court R NSR29 Hong Kong Christian Service Pui Oi School E NSR30 Villa Tiara R NSR31 Rainbow Garden R NSR32 JC Place R NSR33 Future development near Cafeteria New Beach R Note: R – residential; E – educational; W – place of public worship
4.3 Water Quality
Water Sensitive Receivers (WSRs) include existing country parks, water gathering grounds, beaches / secondary contact zone, water abstraction for cooling, flushing and industrial purposes, typhoon shelters, marinas and boat parks. The representative WSRs are listed in Table 4.3 . Figure 3 presents the locations of representative WSRs. Table 4.3: Locations of representative water sensitive receivers WSR ID Sensitive Receivers Nature of Use B7 Golden Beach B B8 Cafeteria New Beach B B9 Cafeteria Old Beach B B10 Kadoorie Beach B B11 Castle Peak Beach B M1 Marina at Hong Kong Gold Coast M TS1 Tuen Mun Typhoon Shelter TS S1 Stream at So Kwun Wat S Note: B – Gazetted Beach; M – marina; TS – typhoon shelter; S - stream
4.4 Hazard to Life
No potentially hazardous sites are identified in the vicinity of the project.
4.5 Ecology
An ecological survey was conducted between November 2008 and May 2009 which covered both dry and wet seasons. A total of 20 habitats have been identified along the project alignment. These include sea, coastal vegetation, mangrove, sandy shore, active agriculture, inactive agriculture, channelized stream / natural stream, tidal pond, pond, marsh, grassland, grassland / shrubland mosaic, shrubland, woodland, orchard, plantation, village area, wasteland and developed area. No species of conservation interest have been identified within the footprint of the cycle track or its associated facilities. As such, it is anticipated that direct impacts to species of conservation interest will be very low.
4.6 Cultural Heritage
No declared monuments, but a few existing graded or proposed graded historic buildings are identified in the vicinity of project site. Table 4.4 summarizes the graded historic building. Table 4.4: Graded Historic Building Item Name Address Existing Year of No. Grading Construction / Restoration 417 Shing Miu (Saint Sam Shing Hui, Ching Shan Grade 2 Built in 1921 Temple) Wan, New Territories
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Civil Engineering and Development Department Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section) Project Profile
Item Name Address Existing Year of No. Grading Construction / Restoration N149 Former Perowne No. 2 Castle Peak Road - Grade 3 Built in 1956 Barracks, Castle Peak Bay, Tuen Mun, Kesarbahadur N.T. Hall N216 Watervale Castle Peak Road - Castle Grade 2 Built in 1933 House, Former Peak Bay Section, Area 48, Gordon Hard Tuen Mun, N.T. Camp
Additionally, two sites of archaeological interest (SAI) have been identified in the vicinity of the proposed alignment, including the So Kwun Wat SAI and Ceramic Kiln at Hin Fat Lane, although no archaeological potential was identified in the vicinity of the project alignment. A section of the proposed cycle track will encroach upon the boundary of So Kwun Wat Perowne Barracks SAI. According to the results of the archaeological impact assessment for the “Cycle Track between Tsuen Wan and Tuen Mun – Investigation” initiated by the Civil Engineering and Development Department in 2010, it is concluded that the subject works area has no archaeological potential.
4.7 Landscape and Visual
Landscape resources mainly include the existing trees at the proposed resting stations at So Kwun Wat and Gold Coast Hotel and along the cycle track. Visually Sensitive Receivers (VSRs) in the vicinity of Project include residential, industrial, commercial, traffic, leisure, institutional, etc. The representative VSRs are summarized in Table 4.5 . Table 4.5: Locations of representative visual sensitive receivers NO. VSRs 1 Village residents distributed in different fragments and road levels near So Kwun Wat Road 2 Road users of So Kwun Wat Road and Kwun Chui Road 3 Residents of various village houses, Aegean Coast and Hong Kong Gold Coast 4 Residents of Monte Carlo Villas, Spring Seaview Terrace, Blessing Villa, Surfside Villa and visitors of Cafeteria Old and New Beaches 5 Residents of Aquamarine Garden and Bayview Terrace 6 Residents of Castle Peak Bay Garden and staff of Tuen Mun Marine Office 7 Residents of Sam Shing Estate and Hanford Garden etc. 8 Residents of various residential areas, e.g. Harvest Garden, JC Garden, Hoi Tak Gardens, Alpine Garden, Rainbow Garden, Handsome Court, Chi Lok Fa Yuen, Lai Po Building, Lee Po Building, Tuen Mun Fa Yuen and so on, and schools, e.g. Po Leung Kuk Hong Kong Taoist Association Yuen Yuen Primary School, Hong Kong Christian Service Pui Oi School and so on.
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Civil Engineering and Development Department Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section) Project Profile
5 Environmental Protection Measures to be Incorporated in the Design and any Further Environmental Implications
5.1 Construction Phase
Air Quality To minimize construction dust impact, good site practice and dust monitoring and audit programme will be implemented. Relevant standard mitigation measures for dust control stipulated in the Air Pollution Control (Construction Dust) Regulation will be followed and incorporated to reduce potential fugitive dust impacts from construction works. In the process of material handling, any material which has the potential to create dust will be treated with water or sprayed with a wetting agent where practicable. Other key control measures will include but not limited to the following:
• The working area for excavation or site clearance including uprooting of vegetation and temporary or permanent structures will be sprayed with water immediately before, during and after the operations so as to maintain the entire surface wet;
• Every vehicle shall be washed to remove any dusty materials from its body and wheels immediately before leaving a construction site. However, all spraying of materials and surfaces shall avoid excessive water usage;
• The area where vehicle washing takes place and the section of the road between the washing facilities and the exit point will be paved with e.g. concrete, bituminous materials or hardcore or similar materials;
• Hoarding of not less than 2.4m high from ground level will be installed along the site boundary, where appropriate, during construction phase;
• Any excavated dusty materials or stockpile of dusty materials will not extend beyond site boundaries and will be covered entirely by impervious sheeting, placed in an area sheltered on the top and the 3 sides, or sprayed with water so as to maintain the entire surface wet, and recovered or backfilled or reinstated within 24 hours of the excavation or unloading; and
• All malodorous excavated material will be placed as far as possible from any ASRs and the stockpiled materials shall be covered entirely by plastic tarpaulin sheets or removed from site as soon as possible. Noise During construction phase, mitigation measures across all work sites will include the followings:
• Good site practices to limit noise emissions at the source;
• Use of quiet plant and working methods;
• Use of site hoarding as noise barrier to screen noise at ground level of NSRs;
• Use of shrouds / temporary noise barriers to screen noise from relatively static PMEs;
• Scheduling of construction works outside school examination periods in critical area; and
• Alternating use of plant items within one worksite, wherever practicable.
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Civil Engineering and Development Department Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section) Project Profile
Water Quality To minimize the impacts from construction runoff, the following key mitigation measures stipulated in the Practice Note for Professional Persons on Construction Site Drainage, Environmental Protection Department, 1994 (ProPECC PN 1/94) will be implemented:
• At the start of site establishment, perimeter cut-off drains to direct off-site water around the site will be constructed with internal drainage works and erosion and sedimentation control facilities implemented. Channels, earth bunds or sand bag barriers will be provided on site to direct stormwater to silt removal facilities.
• The dikes or embankments for flood protection will be implemented.
• The silt removal facilities will be implemented, of which design will be based on the Appendix A1 of ProPECC PN 1/94.
• All exposed earth areas will be compacted and vegetated after earthworks have been completed where practicable.
• The overall slope of the site will be kept to a minimum and all traffic areas and access roads protected by coarse stone ballast.
• Measures will be taken to minimise the ingress of site drainage into excavations.
• All open stockpiles of construction materials will be covered with tarpaulin or similar fabric during rainstorms.
• Manholes (including newly constructed ones) will always be adequately covered and temporarily sealed.
• Particular attention will be paid to the control of silty surface runoff during storm events, especially for areas located near steep slopes.
• All vehicles and plant will be cleaned before leaving a construction site.
• Oil interceptors will be provided in the drainage system downstream of any oil/fuel pollution sources.
• Construction solid waste, debris and rubbish on site will be collected, handled and disposed of properly to avoid water quality impacts.
• All fuel tanks and chemical storage areas will be provided with locks and sited on sealed areas. To reduce the impacts from sewage effluent due to workforce on site, the following key mitigation measures will be implemented:
• Portable chemical toilets and sewage holding tanks are recommended for handling the construction sewage generated by the workforce.
To reduce the impacts from sediment release in coastal water caused by piling works, the following key mitigation measures will be implemented:
• Standing type silt curtains will be installed from the water surface to the seabed level around the points of piling to control the dispersion of SS.
• All barges will be fitted with tight bottom seals to prevent leakage of materials during transport.
• The descend speed of grabs will be controlled to minimize the seabed impact.
• Drainage discharge of site runoff will be directed away from the more sensitive bathing beaches.
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Civil Engineering and Development Department Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section) Project Profile
• Dredged/excavated ccontaminated sediment will be managed in accordance with ETWB TCW No. 34/2002. Waste Management To reduce the impacts from C&D materials, the following key mitigation measures will be implemented:
• The Fill Management Division, CEDD will be notified of the estimated spoil volumes to be generated, and agreement of the the Public Fill Committee will be sought on the disposal of any surplus inert C&D materials.
• Wherever practicable, C&D materials will be segregated from other wastes.
• The surplus C&D material, mainly surcharge material resulting from reclamation works, will be reused within the site as much as possible.
• Temporary stockpiles will be maintained and excavated fill material will be reused for backfilling and reinstatement.
• On-site sorting will be carried out and the use of recycled aggregates will be promoted where appropriate.
• Broken concrete will be reused for recycling purpose, where possible.
• A system will be implemented to ensure that the generation, recycle and disposal of C&D materials are properly documented and verified.
• Disposal of the C&D materials onto any sensitive locations will be avoided.
To reduce the impacts from C&D wastes, the following key mitigation measures will be implemented:
• Standard formwork, pre-fabrication, or more durable formwork or plastic will be used as far as practicable. Wooden hoardings will not be used and metal hoarding will be used to enhance the possibility of recycling.
• The C&D materials will be recycled as much as possible on-site. Public fill and C&D waste will be segregated and stored in different containers or skips.
To reduce the impacts from chemical wastes, the following general mitigation measures will be implemented during the handling process of chemical wastes:
• Plant/ equipment maintenance schedule will be designed to optimise maintenance effectiveness and to minimise the generation of chemical waste.
• Chemical waste will be properly stored and transported off-site for treatment by a licensed collector.
• Where possible, chemical waste (e.g. waste lube oil) will be recycled by licensed treatment facilities.
To reduce the impacts from sewage, the following key mitigation measures will be implemented:
• Adequate numbers of portable toilets will be provided for the workers.
• The portable toilets will be maintained in a reasonable state, which will not deter the workers from utilizing these portable toilets; and
• Overnight sewage will be collected by licensed collectors regularly.
To reduce the impacts from general refuse, the following key mitigation measures will be implemented:
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Civil Engineering and Development Department Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section) Project Profile
• All recyclable materials (separated from the general waste) will be stored on-site in appropriate containers with cover prior to collection by a local recycler for subsequent reuse and recycling.
• Residual and non-recyclable general waste will be stored in appropriate containers to avoid odour.
• Regular collection will be arranged by an approved waste collector in purpose-built vehicles.
Hazard to Life No potentially hazardous sites are identified in the vicinity of the project. Hence, mitigation measures are not required. Ecology Mitigation measures to be implemented are summarized as follows:
• The principle of avoidance, minimization and compensation against habitat loss from the construction will be followed.
• Good work practices will be undertaken to minimize the risk of indirect impacts from water pollution.
• Ecological enhancement through appropriate planting, provision of bird nest boxes and bat boxes and provision of green roof on any potential structures along the cycle track will be investigated.
Cultural Heritage Mitigation measures to be implemented to reduce/ minimize impacts to cultural heritage resources are summarized as follows:
• Encroachment to the existing cultural heritage resourced during construction will be avoided.
• Good work practices will be undertaken to minimize the risks of impacts on cultural heritage, if any. Land Contamination Should land contamination be identified during the construction, the contamination assessment plan, contamination report and remediation action plan will be formulated as appropriate. Landscape and Visual Compensatory planting will be adopted when tree felling is necessary. Transplantation of trees will be considered where feasible. Effort will be taken to preserve the existing trees on site. It is intended to incorporate the landscape and visual amenity measures into the design of the Cycle Track in order to reduce the potential visual impacts.
5.2 Operational Phase
Air Quality As no air quality impact is anticipated during the operational phase, no specific mitigation measures are required. Noise As no noise impact is anticipated during the operational phase, no specific mitigation measures are required. Water Quality
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Civil Engineering and Development Department Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section) Project Profile
With the installation of the drainage system and sewerage system, no additional mitigation measures are required during operational phase. Waste Management Adequate waste collection facilities to accommodate the rubbish from cycle track users will be provided during the operational phase. Separate collection bins will be provided for plastic drinks bottles and drinks cans, which will facilitate recycling of these waste streams. There will be no adverse waste impacts anticipated. Hence, mitigation measures are not required. Hazard to Life No potentially hazardous sites are identified in the vicinity of the project alignment. Hence, mitigation measures are not required.
Ecology No ecological impact is anticipated during the operational phase. Hence no specific mitigation measures are required. Cultural Heritage No impact is anticipated during the operational phase. Hence, no specific mitigation measures are required. Land Contamination It is anticipated that no mitigation measures are required since there are no land contamination impacts during the operational phase. Landscape and Visual Landscaping planting will be included to improve the landscape features. Visual amenity measures will be incorporated into the design of the cycle track in order to reduce the potential visual impacts.
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6 Use of Previously Approved EIA Reports No previously approved EIA report has been referred to in the preparation of the Project Profile.
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PROPOSED CYCLE TRACK (AT GRADE) W A T 擬建單車徑 (高架路) PROPOSED CYCLE TRACK (ELEVATED)
擬建單車徑 / 單車隧道的另一走線 ALTERNATIVE ALIGNMENT OF PROPOSED CYCLE SUBWAY/TRACK
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½s ¤é ¤º®e ®Ö SCALE BAR 1 : 15 000 ®Ö no. date description checked approved
•× REVISION
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T.C. TSANG 13.06.2016 ·s ¬É ¦è ©Ý 荃灣至屯門單車徑 (屯門至掃管笏段) NEW TERRITORIES WEST ¤ñ scale ®Ö checked ñ initial ¤é date DEVELOPMENT OFFICE CYCLE TRACK BETWEEN TSUEN WAN J. TSANG 13.06.2016 1:15 000@A4 AND TUEN MUN (TUEN MUN TO SO ¹Ï«h drawing no. ¤g ¤ì ¤u µ{ © ®Ö approved ñ initial ¤é date KWUN WAT SECTION) CIVIL ENGINEERING AND FIGURE 1 DEVELOPMENT DEPARTMENT
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A/NSR29
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A/NSR31 A/NSR27
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A/NSR25 A/NSR24
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A/NSR21
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A/NSR17 A/NSR16
Cycle Track between Tsuen Wan and Tuen Mun (Tuen Mun to So Kwun Wat Section)
A/NSR18 Location of Representative A/NSR19 Air/ Noise Sensitive Receivers
Figure 2 A/NSR15 已且也
AT-GRADE SECTION
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VIADUCT SECTI酬
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o,owng mie LOCATION OF WATER 員會海灣 GOLDEN BEACH SENSITIVE RECEIVERS ﹛STAGE 2A WORKS﹜
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