12. ENVIRONMENTAL MONITORING AND AUDIT REQUIREMENTS
12.1
This section outlines the EM&A
requirements for the Spur Line construction and operation based on this report.
Construction activities for the Spur Line include piling works, concreting,
draining and filling of fishponds and excavation of potentially contaminated
materials. These activities have the potential to impact on the existing
environment. Mitigation measures have been recommended in this Environmental
Impact Assessment (EIA) report to prevent potential adverse impacts from the
construction of the Spur Line. Based on these recommendations, the
environmental monitoring and audit requirements for the construction of the
Spur Line are summarised below.
Noise
12.2 Noise monitoring should be carried out at selected representative noise sensitive receiver during the construction period to monitor compliance with permissible noise levels for the activities being undertaken.
12.3 The noise sensitive receivers are illustrated in Figure 3.1.
12.4
The construction noise assessment shows that, for most
of the sensitive receivers, daytime noise during construction complies with
daytime noise criteria.
12.5
However, construction noise during hard material
removal from Pak Shek Au Cutting and Lok Ma Chan Road widening may have an impact
on the RNSRs 19, 22, 24 and 35. Leq (30 min) is recommended to be monitored at
RNSRs 22 and 24 during the above construction activities, following the
requirements set out in the contract specific EM&A Manual, what is prepared
based on the EPD Generic Environmental Monitoring and Audit Manual, while ad
hoc monitoring at RNSR35 will be conducted in case of complaints based on the
same requirements.
12.6
Baseline monitoring should be conducted prior to
commencement of works. Action and Limit levels should be established as
described in the EPD Contract-specific EM&A Manual. Where exceedances
occur, action plans described in Table E1 of Appendix E should be
implemented. Necessary follow up will be conducted through regular site
inspection and audit.
Ecology
12.7 The aim of monitoring of any implemented wetland mitigation scheme should be to establish that clearly defined end objectives are meet according to measurable performance criteria. Such objectives and performance criteria should be based on the broad objectives and targets as outlined here, but should be identified in detail as part of the production of a Management Plan.
12.8 A Habitat Creation and Management Plan (HCMP) is required to be prepared for all areas of newly created or enhanced wetland under this project. The HCMP will be prepared as part of a contract which has been set-up between KCRC and a separate consultancy.
12.9 HCMP will cover:
· Management of mitigation areas to satisfy habitat creation and species-specific carrying capacity targets, including (but not restricted to) type of wetland habitat to be created (including recontouring and other landforming works), water management regime (including provision of permanent water sources where required), species planting plans (including establishment techniques), vegetation management plans and programmes, fish pond stocking and drain down rotation.
· Details of extra and diversified habitat provision covered by the foregoing to increase their overall carrying capacity, increase their carrying capacity for particular target species and / or provide habitat for other target species not currently present.
· Targets and monitoring methods for food resource provision in enhanced fishponds and other open water habitats.
· Short and long term management responsibilities.
12.10 However, as overall objectives may take many years to be met, additional operational objectives that indicate a direction of desirable change should also be monitored (e.g. hydrological regimes and plant establishment required to produce certain habitats and wetland functions). Such information may also help to guide management activities as they proceed. In practice, the separation of 'means' and 'ends' objectives can be difficult as they may overlap in some cases. For example, establishment of a particular vegetation community may be an 'end' objective in itself, but this may also be a 'means' objective for providing suitable habitat for the recolonisation of a target species, another 'end' objective.
12.11 A list of wetland attributes, some of which may form an appropriate basis for measurable performance criteria is provided below. These should be measured according to clearly specified Standard Operating Procedures (including specifications on the timing and frequency of monitoring) developed as part of the Management Planning process.
Pedology
· Change in depth (i.e. topsoil/subsoil regime)
· Change in organic versus mineral content
· Change in nutrient composition
· Change in anaerobic/aerobic condition
· pH
Hydrology
· Water levels and storage capacity (seasonal fluctuations and flood attenuation capacity)
· Inflows (surface, ground, direct)
· Losses
· Surface water flow rates
· Hydraulic gradients
Water
chemistry
· pH
· BOD
· dissolved oxygen
· ammonia
· total oxidised nitrogen
· orthophosphate
Ecology
· General habitat extent (e.g. habitat mapping and fixed point or aerial photography)
· Survival, growth and reproduction of key species (especially sown, planted or translocated species)
· Health of planted species e.g. pest or fungal attack.
· Plant species richness and diversity
· Plant community composition (individual species frequency and cover, and NVC community type) formation and zonation
· Vegetation structure
· Natural colonisation and succession
· Maintenance of natural ecological processes
· Presence and abundance of Species of Conservation Importance in relation to baseline levels and target population levels for specific habitat compensation mitigation measures (i.e. within the enhanced fish pond area and reedbed/marsh areas around the San Tin Station, the temporary construction mitigation area, the River Beas meander compensation areas and the Long Valley marshland areas to be created under the viaduct)
· Presence or abundance of selected ecological indicator species
12.12 In addition to these general monitoring requirements, additional monitoring and research may be required to refine specific management actions required to meet particular objectives. In particular, the ecology and habitat requirements of Greater Painted-snipe are still not fully understood. One study at Kam Tin showed that there were significant differences in the diurnal and nocturnal distribution of this species. Given that this is a target Species of Conservation Importance for compensation at Long Valley it is recommended that baseline data be collected on diurnal and nocturnal habitat requirements prior to the commencement of the works through the use of radio telemetry. This will enable the monitoring of colonisation of the temporary mitigation area without causing excessive disturbance. This radio telemetry work should continue throughout the construction period as both the existing marsh at Long Valley and the temporary mitigation area will be directly affected by the works. The maintenance of a viable population of Greater Painted-snipe throughout the construction period is a primary aim of the mitigation design, and as such should be thoroughly monitored.
12.13 Another key area of monitoring and research should be aimed at establishing the impacts of the railway and station construction and operation on the two globally threatened species of eagle: Imperial Eagle and Greater Spotted Eagle. As described above, it is not expected that residual impacts on these species are likely to be significant. However, given their globally threatened status it is proposed that these species should be included as part of the monitoring and research should be carried out to enable enhancement of habitats for these species. Although primarily wetland species within Hong Kong, their specific habitat and particularly food requirements are not well known. Further information on these requirements would enable some refinements of the proposed habitat compensation areas to the benefit of these species. Such findings could also be applied to the management of other areas that are frequented by these wide-ranging species, such as the Mai Po Nature Reserve.
12.14 Detailed proposals for research into the ecology and habitat requirements of wintering Greater Spotted Eagle and Imperial Eagle should be developed during the detailed design process and included as part of the Management Plans.
Landscape and Visual
12.15 The EIA has recommended the EM&A for landscape and visual resources is undertaken during both the construction and operational phases of the project. The implementation and maintenance of the landscape compensatory planting measures is a key aspect of this and should be checked to ensure that the proposals are fully realised. The mitigation measures are detailed in section 5.0 the Landscape and Visual Impact Assessment Report.
12.16 Also any potential conflicts between the proposed landscape measures and any other project works and operational requirements should be resolved at the earliest possible date and without compromise to the intention of the mitigation measures. In addition, implementation of the mitigation measures recommended by the EIA will be monitored through the construction phase site audit programme.
Baseline Monitoring
12.17 Baseline monitoring for the landscape and visual resources will comprise a vegetation survey of the entire selected route undertaken on an ‘area’ basis. Representative vegetation types will be identified along with typical species composition. The landscape resources and elements of particular concern are to be noted.
12.18 The landscape and visual baseline will be determined with reference to the habitat maps included in the EIA Report.
Construction and Operational Phase
Audit
12.19 A competent Landscape Architect should be employed by the Contractor for the implementation of landscape construction works particularly during the site clearance operations when the proposed tree felling, lifting and transplantation will take place and subsequent maintenance operations during the 12 month establishment period. The establishment works will be undertaken throughout the Contractor’s one year maintenance period which will be within the first operational year of the project.
12.20 All measures undertaken by both the Contractor and the Landscape Contractor during the construction phase and first year of the operational phase shall be audited by a Landscape Architect, as a member of the Environmental Team. This will be completed on a regular basis to ensure compliance with the intended aims of the EIA. Site inspections should be undertaken at least once every two weeks throughout the construction period and once every two months during the operational phase. The broad scope of the audit is detailed in table 12.3 below. Operational phase auditing will be restricted to the 12 months establishment works of the landscaping proposals, with KCRC / LCSD as appropriate taking over the maintenance and monitoring after this period.
12.21 In addition, audit of mitigation measures to avoid impacts on
landscape and visual resources will be required during the construction period,
together with supervision of the compensatory planting. The audit of the compensatory planting
will also extend through the first year of the Spur Line, during the
Contractor’s one year maintenance period, to ensure that the establishment of
the planting. The maintenance and
monitoring of the planting will be responsibility of either KCRC or LCSD
depending on location after this period.
Water Quality
12.22 The Spur Line alignment will cross a number of water bodies in the Long Valley, Chau Tau and Lok Ma Chau areas, including wetlands, rivers and fishponds.
12.23 Impacts on water quality include generation of turbid runoff, which
may contain concrete washings, lubricants, chemicals and other contaminants.
Impacts can be substantially reduced through the implementation of good site practices,
such as careful handling of chemicals and proper disposal of wastewater, and
incorporation of suitable drainage systems including sedimentation and
infiltration pits, and temporary grease trap and septic tank systems. Discharge
should be handled in accordance with ProPECC PN1/94 on Construction Site Drainage.
12.24 Hydraulic
impacts from culverting of streams and construction of supports for the
footbridge crossing Shenzhen River are of low significance given their small
scale and the predominantly tidal influence, and therefore low velocities
experienced in the Lok Ma Chau area.
12.25 Mitigation measures for construction impacts are summarised in Table 6.1 of Chapter 6. Provided the proposed mitigation measures are fully implemented, the impacts of the project on water quality are expected to be minimal.
12.26 Full implementation of the proposed mitigation measures for water quality requires good site management and regular maintenance of the mitigation facilities including drainage system, silt traps, oil and grease traps, sewage treatment plant, infiltration chambers and wetland. A minimal environmental monitoring and audit programme is therefore required to ensure effective mitigation.
12.27 Water quality monitoring locations should be selected to represent the major water bodies in the Study Area and in selected fishponds, and should include both upstream and downstream locations. Preliminary locations are shown on Figure 12.1 and Table 12.1. In addition, small streams should be monitored frequently where there is a potential for their water quality to be impacted by the Spur Line works.
Table 12.1
Proposed Monitoring Locations for Water Quality
during Construction of Spur Line
Location
Code |
Description |
RS1 |
River Sutlej – downstream of Spur Line |
URS |
River Sutlej – upstream of Spur Line |
RB1 |
River Beas – downstream of Spur Line |
URB |
River Beas – upstream of Spur Line |
FP1 |
Selected fishponds to be monitored when works is
close to this area. These locations will be modified depending on the works
location. |
FP2 |
|
FP3 |
|
STR1 |
San Tin River – downstream of Spur Line |
USTR |
San Tin River – upstream of Spur Line |
12.28 The following water quality parameters are recommended: Dissolved Oxygen (DO), pH, Water Temperature, Turbidity, Suspended Solids (SS) and Oil & Grease. Monitoring frequencies shown in Table 12.2 are recommended.
Table 12.2
Recommended Frequencies for Monitoring Water Quality
Parameter |
Frequency |
DO/pH/Temperature/Turbidity |
Twice a week in-situ monitoring |
SS |
Weekly |
Oil & Grease |
Biweekly/monthly depending on the type of waters |
12.29 Baseline monitoring should be conducted prior to commencement of works in accordance with the contract-specific EM&A Manual, which is prepared based on the EPD Generic Environmental Monitoring and Audit Manual. Action and Limit levels should be established. Where exceedances occur, action plans described in Table M3 of Appendix M should be implemented. Necessary followup will be conducted through regular site inspection and audit.
12.30
Operation monitoring should include the performance
of the sewage treatment plant and reedbed in achieving the standards expected.
In addition to BOD5, SS, DO, pH, NH3-N and PO4-P
should be monitored at
regular intends after starting of the reedbed system. The details of
locations, frequency and parameters should be
provided in the EM&A Manual to be produced subsequently.
Air
Quality
12.31 Major
potential sources of adverse air quality arising from the Spur Line are site
formation works which involve significant amount of earth movement. The
nuisance from construction vehicles and plant emission is likely to be
negligible.
12.32 The air sensitive
receivers are the same as the noise sensitive receivers and are illustrated
in Figure 3.1.
12.33 It is
concluded that the air quality in most of the works area will not be subjected
to any significant construction impacts. With the implementation of the
recommended mitigation measures described in Chapter 7, the air quality during
the construction phase can be kept within acceptable levels.
12.34 Site formation and slope cutting works may have an impact on the sensitive receivers RNSR 24 and 31-33. These sensitive receivers require EM&A during the site formation and slope cutting stages. It is recommended that 24-hour TSP is monitored at RNSR 24 and one of the RNSRs, 31-33 following requirements set out in the contract-specific EM&A Manual, which is to be prepared based on the EPD Generic Environmental Monitoring and Audit.
12.35 Baseline monitoring should be conducted prior to commencement of works. Action and Limit levels should be established as described in the EPD contract-specific EM&A Manual. Where exceedances occur, action plans described in Table N2 of Appendix N should be implemented. Necessary follow up will be conducted through regular site inspection and audit.
Waste, Fisheries and Cultural Heritage
12.36 Provided that the mitigation measures set out in the EIA are fully implemented, the construction impacts of the project on these environmental issues will be acceptable and no environmental monitoring and audit will be required during the construction.
Contaminated Land
12.37 Contaminated land assessment has concluded that there is a potential of contaminated land within the works area. During the site investigation stage, a sampling and analysis programme shall be prepared and implemented where contamination is suspected.
12.38 For example, in a potentially contaminated area as shown in Figure 9.1, samples of the ground should be taken in accordance with the sampling and analysis programme described in Contaminated Land chapter. If found to be unacceptably contaminated, options for disposal on-site or treatment shall be investigated following the remediation action plan also described in the Contaminated Land chapter.
12.39 Runoff from potentially contaminated sites, which may be contaminated with materials from the site, should be tested for relevant contaminants in monitoring of water quality in runoff from this area.
12.40 Mitigation measures which should be implemented and which require monitoring during construction are listed in the EIA report and summarized in the Implementation Schedule (Table 12.3).
Environmental
Management System (EMS) for Spur Line
KCRC's Environmental Management System
12.41 Sound environmental management is fundamental to KCRC's performance. It is only by fully integrating environmental management with all other management practices, operational, planning and decision-making processes that environmental standards can be adequately addressed.
12.42 KCRC are committed to minimise the environmental impact of many of its operations by implementing environmental management systems that meet the ISO 14001 standard in many aspects of their operations. This is an international environmental management system standard that once gained, certifies a company’s ability to effectively manage its environmental impacts.
12.43 KCRC began applying the ISO 14001 international environmental management standard to our business in 1996 to promote continual environmental improvement. In 1997, KCRC became the first transport company in Asia to obtain an ISO 14001 certificate. By the end of 1999 most of East Rail Division and Light Rail Division had been certified to ISO 14001. Currently six departments in KCRC have achieved ISO 14001 certification as shown below.
Business Units Registered with ISO 14001 |
Date of Certification |
Freight
Department, East Rail Division |
Dec-99 |
Operations
Department, East Rail Division |
Dec-99 |
Operations
Department, Light Rail Division |
Nov-99 |
Rolling
Stock Department, East Rail Division |
Jan-99 |
Engineering
Department, Light Rail Division |
Nov-98 |
Infrastructure
& Buildings Department, East Rail Division |
Dec-97 |
Bus
Engineering and Traffic Sections, Light Rail Division |
Sep-97 |
12.44 The management of the construction and operation of Spur Line will be conducted through a number of mechanisms, which collectively ensure that the KCRC fulfils its commitments and legal requirements associated with environmental protection. These mechanisms and processes form an Environmental Management System (EMS). The EMS will draw on the following information:
· Sheung Shui to Lok Ma Chau Spur Line EIA;
· EM&A Programme and Manual
· Environmental Permit
· Environmental Management Plans
· Results of Environmental Performance Reviews or Audits;
· Construction Method Statements; and
· Contractual Documentation relating to civils works packages.
Sheung
Shui to Lok Ma Chau Spur Line EIA
12.45 The current EIA document presents an assessment of the likely impacts arising during the construction and operation phases of the railway and recommends mitigation measures that will minimise these impacts on the environment. The Environmental Permit will include all the mitigation measures required to be implemented during the relevant phases. EM&A requirements have been described in the document, however, the EM&A Manual will be produced under a separate contract.
Sheung
Shui to Lok Ma Chau Spur Line EM&A Programme
12.46 The EM&A Manual to be prepared under a separate contract under a later contract, provides a description of the organisational arrangements for the EM&A programme and stipulates the scope of construction monitoring (e.g. Noise, Air and Water), the parameters to be measured (e.g. Lseq 30mins Total Suspended Particulates, Suspended Solids, etc.), the frequency of monitoring and the actions to be taken in the event of exceedances of the environmental criteria being recorded. Additionally, audit requirements for landscape and visual, heritage, ecological, waste management and land contamination issues will be presented. The EM&A programme also outlines guideline for site auditing and reporting.
12.47 The EM&A programme provides the means by which feedback on the environmental impacts of the construction phase are provided (to be Contractor, the Corporation and, as the EM&A process is a requirement of the EIA process, the Environmental Protection Department) and by which the predictions made during the EIA can be tested.
12.48 An Implementation Schedule (IS) on presented in the current EIA, which incorporates mitigation measures within each section of the EIA and ties the implementation of mitigation measures to the specific work activity for which it was prescribed, thereby ensuring its timely installation.
Environmental
Management Plans
12.49 For the effective implementation of the mitigation, monitoring and remedial requirements presented in the EIA, EM&A and IS, an appropriate contractual and supervisory framework needs to be established.
12.50 The basis of the framework within which implementation will be managed is through the preparation of Environmental Management Plans (EMP) by the Contractor. KCRC will audit against the EMPs and advise the necessary remedial actions required which shall be enforced by the Engineer through contractual means.
12.51 The EMP is similar in nature to a safety or quality plan and will provide details of the means by which the Contractor (and all subcontractors working to the Contractor) will implement the recommended mitigation measures and achieve the environmental performance standards defined both in Hong Kong environmental legislation and in the EIA documentation. The primary reason for adopting the EMP approach is to make the Contractor aware of his environmental responsibilities and to ensure his commitment to achieving the standards specified.
12.52 The EMP approach is grounded on the principle that the Contractor shall define the means by which the environmental requirements of the EIA process, EM&A programme and contractual documentation shall be met. In the first instance, each Tenderer shall prepare a skeletal Environmental Management Plan for submission as part of the tendering process. The skeletal EMP will demonstrate the determination and commitment of the organisation and indicate how the environmental performance requirements laid out in the EIA documentation will be met. It is recommended that this aspect be included as a specific criterion in the assessment of tender documents. This will act as a clear indication to all Tenderers of the Corporation’s commitment to the minimisation and management of environmental impacts. Upon Contract Award, the successful Tenderer shall be required to submit a draft Environmental Management Plan for the approval of the Engineer and a final version prior to the commencement of the works.
Environmental
Performance Reviews
12.53 The environmental performance review programme comprises the regular assessment of the effectiveness of the EMPs, site practices and procedures to ensure that the required mitigation measures are routinely implemented and environmental standards are maintained.
12.54 The review of on-site environmental performance will be undertaken by KCRC on the basis of criteria and methodologies contained within a Review Protocol developed in advance of the commencement of construction works.
12.55 The criteria against which the reviews will be undertaken will be derived from:
· the approaches, procedures and commitments given by the Contractor in the Environmental Management Plan.
· the clauses contained within the Contractual Documentation; and
· those parts of the Contractor’s method statement which relate to the minimisation of environmental impacts or other specified environmental protection measures.
12.56 These reviews shall focus on the effectiveness of the implemented measures to achieve the purpose, not simply the fact that a measure has been implemented. In addition, the management systems established by the Corporation’s on-site management team (i.e. the “Engineer”) to monitor the Contractor’s compliance with Contractual requirements will be included within the protocols.
12.57 The Review Protocols will be developed during the finalisation of the on-site procedures and will be incorporated in the EM&A Manual. The likely protocols will include (but not be limited to) the auditing of the following activities:
· The allocation of responsibility for fulfilling environmental requirements and the effectiveness of lines of communication with regard to environmental issues.
· Compliance with procedures established to enable an effective response to environmental incidents, exceedances or non-compliances.
· The extent and accuracy of record-keeping related to environmental performance indicators.
· The effectiveness of environmental management activities, including:
- the inspection, cleaning and maintenance of sediment traps and oil interceptors;
- the management and disposal of on-site waste arisings;
- the implementation of spill prevention measures;
- the maintenance of site boundary fences to prevent incursions, tipping, vehicle movements and encroachment of personnel into surrounding areas;
- the measures adopted to prevent the flow of pollutants, sediment and contaminated runoff into streams and water bodies within the work site boundary; and
- the speed and effectiveness of responses to complaints.
12.58 The protocols will comprise checklists of environmental requirements and will be amended, throughout the construction phase as necessary, to focus on areas of frequent non-compliance and to reflect the potential impacts associated with specific activities within the construction programme.
Construction
Method Statements
12.59 It is common practice for the Contractor to submit details of forthcoming works to the Engineer to seek approval for the commencement of the works as well as the methodology and equipment proposed to be used.
12.60 It is recommended that this process be expanded, in line with the adoption of the Contractor’s EMP, to require the signature of the Contractor’s Environmental Manager who shall comment on deviations of the specific works from that assumed in the project EIA and advise on the implications of the changes in construction methods for achieving the environmental performance criteria set out in the EIA documentation and the EMP.
12.61 This ongoing requirement for the Contractor to review proposed working methods, in terms of their potential to impact upon the environment, will reduce the time taken to implement the necessary environmental control measures and reduce the number of iterations a measure may have to go through before becoming effective.
12.62 Any changes in construction methods will need to be reflected in a revised EMP or the Contractor will be required to demonstrate the manner in which the existing EMP shall accommodate the proposed changes.
Contractual
Documentation
12.63 The key element to be included in the contractual documentation is the requirement to prepare, implement and maintain an EMP, as described above. The EMP places a contractual responsibility for on-site environmental management with the Contractor.
12.64 The EMP will, in part, be based upon the requirements contained within the contractual documentation. The contractual documentation would generally comprise appropriate extracts from (and references to) the EIA Report and EM&A Manual and include such typical elements as the relevant statutory environmental standards, general environmental control clauses and specific environmental management clauses, as well as an outline of the scope and content of the EMP. In drafting the documentation, due consideration shall be given to the predictive nature of the EIA process and the consequent need to manage and accommodate the actual impacts arising from the construction process. In particular, the Contractor must be placed under a clear obligation to identify and control any implications arising from changes from the EIA assumptions relating to work methods, progress rates and other estimates made during the preliminary design phase.
12.65 In addition, the contractual documentation shall define appropriate contractual mechanisms to ensure compliance with environmental requirements. The range of mechanisms available to the Engineer shall reflect the priority that the Corporation is to give environmental issues during the construction phase and may include provisions for suspending works pending the remediation of persistent environmental problems. Similarly, the inclusion of environmental performance milestones payments shall be considered by the Corporation as a means of enhancing the environmental performance and encouraging the Contractor to meet these contractual obligations.
Electronic Environmental Management System (EEMS)
12.66 An Electronic Environmental Management System (EEMS) will be implemented and maintained for each of the Civil Works Contracts throughout the construction phase of Spur Line. The EEMS will function as a database for the entry of all recorded monitoring and audit information. In addition, EEMS will:
· automatically issue Notifications of Exceedance via E-mail;
· action Event Contingency Plans via E-mail;
· store details of complaints;
· store details of licenses/permits and notify forthcoming expires via E-mail;
· store construction activity details and other relevant site information an link these to the Implementation Schedule; and
· allow retrieval of electronic versions of the EM&A manual, EIA and other relevant documents.
12.67 The different users of the EEMS will have specific security clearance levels to determine extent of access.
Summary of
Mitigation Measures and Implementation Schedule
12.68 Table 12.3
presents an Implementation Schedule for all the mitigation measures recommended
during the EIA process to date. Mitigation measures for ecology and visual and
landscape issues are also presented, although these assessments are on-going.
As this EIA covers the preliminary design it will be subject to review and
refinement during subsequent assessment and design stages. The schedule provides
the currently available information on:
• the
specific mitigation measures recommended including references to the EIA;
• the
location and timing of implementation of the mitigation measures;
• the
party responsible for implementing each mitigation measure; and
• the
project stage at which the mitigation measure is to be implemented.
Table 12.3
IMPLEMENTATION
SCHEDULE (See Notes at End of Table for Codes)
EIA Ref |
Environment Protection Measures |
Location/Timing |
Implementation Agent |
Implementation Stages* |
Relevant Legislation and Guidelines |
|||||
Des |
C |
O |
|
|||||||
|
|
|
|
|
|
|
|
|||
Section 3 |
Noise Construction mitigation
measures |
|
|
|
|
|
|
|||
|
The Contractor shall comply with the Noise Control Ordinance (Cap 400) and
with any regulations made under the Ordinance, including restrictions placed
on noise from construction work and the requirements to seek Construction
Noise Permits. Before commencing work which requires Construction Noise
Permits, the Contractor should obtain such permits and display these appropriately. |
whole alignment/all times |
CC |
|
3 |
|
NCO (Cap 400) |
|||
|
The Contractor shall devise, arrange methods
of working and carry out the works in such a manner as to minimise noise
impacts on the surrounding environment, and shall provide experienced
personnel with suitable training to ensure that these methods are
implemented. |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
Section 3 |
The Contractor shall ensure that all plant and
equipment to be used on the Site likely to cause excessive noise effectively
sound-reduced by means of silencers, mufflers, acoustic linings or shields,
acoustic sheds or screens or other means to avoid disturbance to any nearby
noise sensitive receivers (NSRs). All hand-held percussive breakers and air
compressors will comply with the Noise Control
(Hand-held Percussive Breakers) Regulations and Noise Control (Air
Compressors) Regulations respectively under the Noise Control Ordinance (Ordinance No. 75/88, NCO Amendment 1992 No.
6). |
whole alignment/all times |
CC |
|
3 |
|
NCR (HPB) NCR (AC) NCO |
|||
|
The Contractor shall ensure that all plant and
equipment to be used on site are properly maintained and in good operating
condition. |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
|
It is recommended that construction noise
should be mitigated using a suitable combination of the following measures: |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
|
Noisy equipment and activities should be sited
by the Contractor as far from close-proximity sensitive receivers as is
practical and orientated away from NSRs. Prolonged operation of noisy
equipment close to dwellings should be avoided. |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
|
Noisy plant or processes should be replaced by
quieter alternatives. Silenced diesel and gasoline generators and power
units, as well as silenced and super-silenced air compressors, can be readily
obtained. |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
Section 3 |
Noisy activities should be
scheduled to minimise exposure of nearby sensitive receivers to high levels
of construction noise. For example, noisy activities can be scheduled for
midday, or at times coinciding with periods of high background noise (such as
during peak traffic hours). |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
|
Idle equipment should be turned
off or throttled down. Noisy equipment should be properly maintained and used
no more often than is necessary. |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
|
The power units of non-electric
stationary plant and earth-moving plant should be quietened by vibration
isolation and partial or full acoustic enclosures for individual
noise-generating components. |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
|
Construction activities should
be planned so that parallel operation of several sets of equipment close to a
given sensitive receiver is avoided. The numbers of operating items of
powered mechanical equipment should be minimised. |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
|
Construction plant should be
properly maintained and operated. Construction equipment often has silencing
measures built in or added on, e.g. bulldozer silencers, compressor panels,
and mufflers. Silencing measures should be properly maintained and utilised. |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
|
Temporary acoustic barriers
should be used to screen active part of construction site. The operating
equipment shall be out of sight of noise sensitive receivers after
installation of this temporary noise barrier. Barriers can be made of mounds
of fill or any material having a minimum surface density of 20 kg/m³,
with a minimum height of 2.5 m. |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
Section 3 |
Operational
Noise The contractor shall ensure that the measures
proposed shall meet the required standard defined in the Noise Control Ordinance at all locations along the Alignment. |
whole alignment/all times |
CC |
|
3 |
|
|
|||
|
Viaduct Structure The Sound Reduction Plenum System will be used
on all elevated sections of the alignment on viaduct. The structure for the
section of viaduct between Sheung Shui and Pak Shek Au embankment/cutting
will be designed to allow for additional noise mitigation, if necessary. |
All elevated sections of alignment on viaduct |
DDE/CC |
3 |
3 |
|
NCO and EIAOTM |
|||
|
Track Form Design Floating mini-slab track (FST) at a resonant frequency of 16 Hz and low stiffness shear type baseplates of 13 kN/mm shall be used in the track form design for the railway viaduct from Sheung Shui to beginning of at grade cutting/embankment at Pak Shek Au. Low Vibration Track (LVT) for viaduct beginning at the end of Pak Shek Au embankment/cutting at grade section to Lok Ma Chau Terminus. Ballasted Track for all at grade sections. |
All elevated sections of alignment on viaduct |
DDE/CC |
3 |
3 |
|
NCO and EIAOTM |
|||
Section 3 |
Air-conditioning Limits The noise specification of
air-conditioning units mounted on the roof of new skirted trains shall not
exceed a noise level of 57 dB(A) at a distance of 15 m from the
train. The air-conditioner units mounted on refurbisbed East Rail Trains shall not exceed. 62.8 dB(A) at a distance of 25 m from the train. |
All trains/all times |
DDE/CC |
3 |
3 |
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NCO and EIAOTM |
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Additional Mitigation Measures (to Standard Parapet &
Retaining Walls) for Railway Noise |
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200 m Cantilever barrier
(to be reviewed in detailed design stage) |
North of Sheung Shui Station |
DDE/CC |
3 |
3 |
|
NCO and EIAOTM |
|||
|
Full enclosure. Walkway structure with parapet extending 1.2 m above the safety walkway, as part of standard walkway design to be incorporated on all viaduct sections and at grade Pak Shek Au embankment/cutting section. Walkway structure for the at grade section will not have derailment constraints while that for the viaduct sections will have derailment constraints. |
North of Sheung Shui Station |
DDE/CC |
3 |
3 |
|
NCO and EIAOTM |
|||
Section 3 |
Monitoring The assessment of noise impacts
has concluded that if the recommended mitigation measures are incorporated
into the design, it is unlikely that there will be any prolonged impacts at
any of the sites during construction phase. Routine environmental monitoring
of noise during construction will be carried out at RNSRs 19, 22 and 24 is
necessary, while ad hoc monitoring will be required at RNSR35 should
complaints arise. Specified mitigation measures should be written into
contract documents. |
RNSRs 19, 22 and 24/Site
formation (19) and hard material removal for Pak Shek Au cutting (22, 24) RNSR 35/Lok Ma Chau Road
widening |
CC |
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3 |
|
-- |
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Routine audit of the
implementation status of specified mitigation measures during the
construction and operation phases should be undertaken by the project
proponent or his representative. Such audits should be well documented and
include action procedures in the case of non-compliance. |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
Section 4 |
Ecology Construction mitigation measures Wetland habitats should be
designed to achieve the specified compensation objectives for habitats and
species. The design of the wetlands should conform with the description in
the EIA report. For temporary construction impact mitigation, a wetland marsh should be established before works commence on the Long Valley marsh area. The area beneath the viaduct will be established as a wetland to compensate for habitat loss due to the railway construction. Meanders along River Beas will be enhanced as wetland to compensate for disturbance impacts on disturbance sensitive species due to the railway construction and operation. |
Specified locations/Des&C
stages |
DDE/CC |
3 |
3 |
|
-- |
|||
Section 4 |
Design must ensure that suitable hydrological
conditions for target wetland habitats are provided in the long-term and that
appropriate plant species and establishment methods are used to enhance /
create target vegetation communities. |
Specified locations/Des&C stages |
DDE/CC |
3 |
3 |
|
-- |
|||
|
It is highly recommended that mitigation measures are implemented in the Long Valley construction compensation area in advance of impacts to the Long Valley marsh. Construction impact mitigation for the compensation area around Lok Ma Chau station should involve specified ponds more than 500 m from the station works area. Creation of shallow feeding habitats is required for enhancement. Works shall be concurrent with the start of works in the Station area. |
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The design should minimise areas of reflective
materials (including glass) on outer surfaces of LMC station and footbridge. |
LMC station & footbridge Des&C stages |
DDE/CC |
3 |
3 |
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|||
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Ensure noise reduction system is appropriately
incorporated. |
Long valley/Des&C stages |
DDE/CC |
3 |
3 |
3 |
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|||
|
The haul road should be constructed south of
the alignment and staff access should be limited north of this. |
Long valley/Des&C stages |
DDE/CC |
3 |
3 |
|
|
|||
|
Modification of ponds and reprofiling of bunds
should be carried out in accordance with the EIA requirements. |
San Tin/Lok Ma Chau/Des&C stages |
DDE/CC |
3 |
3 |
|
|
|||
|
Areas of reed bed and marshland habitat will
be created alongside the LMC station buildings for both ecological and water
cleanup proposes. They will be shallow sloping basins to produced zoned
wetland habitat. Construction works will be minimal and consist
of reprofiling adjacent fishpond bunds. |
San Tin/Lok Ma Chau Des&C stages |
DDE/CC |
3 |
3 |
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|||
|
The reedbed should be established during
construction of the sewage treatment plant. |
Lok Ma Chau/Construction stage |
CC |
|
3 |
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|||
|
Operation
mitigation measures Maintenance of the ecological compensation
areas should be carried out according to the Habitat Creation and Management
Plans for the Station and Long Valley mitigation area. |
Whole alignment/O |
KCRC |
|
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3 |
-- |
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|
Monitoring The detailed
design of the wetland mitigation areas should be checked and the
establishment of the wetland areas monitored by qualified ecologists and
landscaping professionals. |
All mitigation areas / Des, C & O stages |
KCRC |
3 |
3 |
3 |
-- |
|||
Section 5 |
Landscape and Visual Impacts
Construction Mitigation
Measures
The following mitigation measures shall be implemented to minimise the landscape and visual impact of the construction works: |
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|
Existing vegetation and
landscape context •
The extent
of the agreed works areas should be regularly checked during the construction
phase. Any trespass by the
Contractor outside limit of the works, including any damage to existing trees
and woodland shall be noted; •
Existing
trees will be retained as far as is possible on site. The felling of trees
will be in accordance with WBTC 24/94 Tree Preservation, including
compensatory planting plans approved by relevant government departments.
Trees identified in the Tree Survey Report and Felling Application as
suitable for transplantation or retention and those requiring felling are to
be identified on site by the Contractor and the inspected by a qualified
Landscape Architect to ensure compliance with the Felling Application; |
Whole alignment / all times |
CC |
3 |
3 |
|
EIAO TM EIAO TM WBTC 24/96 Tree Perservation |
|||
|
•
The
progress of the engineering works should be regularly reviewed on site to
identify the earliest practical opportunities for the landscape works to be
undertaken; •
All
existing trees and vegetation within the study area which are not directly
affected by the works are retained and protected; •
The methods
of protecting existing vegetation proposed by the Contractor should be in
accordance with the guidelines laid down in the Tree Survey Report completed
by others and these provisions should be enforced; |
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Construction site controls
•
The location
of the work sites associated with the proposed development shall be carefully
selected to minimise the potential landscape and visual impacts of the
construction works; •
Regular
checks shall be carried out to ensure that the work site boundaries are not
exceeded and that no damage is being caused to the surrounding areas; |
Whole alignment / all times |
CC |
|
3 |
|
EIAO TM |
|||
|
•
Topsoil
disturbed by the works should be tested for quality and if worthy, it should
be stockpiled not greater than 2m high and either temporarily hydroseeded or
periodically turned to avoid degradation of the organic material. Topsoil
should be reused on completion of the engineering works or on other projects; •
Control of
night time lighting on the temporary works areas and within the project
limit; •
Erection of
decorative screen hoarding to screen construction activity; •
Advance
planting for screening; •
Minimising
the height of temporary buildings; •
Careful
positioning of construction plant and storage of materials; |
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|||
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•
The
potential for soil erosion shall be reduced at the construction stage by
minimising the extent of vegetation disturbance on site and providing a
protective cover (e.g. plastic sheeting or a grass cover established by
hydroseeding) over any exposed ground, and; •
Temporary
construction sites shall be restored to standards as good as, or better than
the original condition. |
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Construction of the Soft Works •
Soft
landscape measures should be used where appropriate, employing native plant
species as far as practicable, to restore the green land cover and enhance
the vegetated, rural environment. This includes tree / shrub planting and
hydroseeding in the peripheral site area, footpath sides and access roads; •
The design
and exterior of the Lok Ma Chau Station and associated infrastructure to be
coloured to minimise visual impact, particularly glare. Trees and shrubs to
be planted around the structures to soften their impact; |
Whole alignment / all times Lok Ma Chau Station / all times |
DDE/CC DDE/CC |
3 3 |
3 3 |
|
EIAO TM |
|||
|
•
The design
of the viaduct should aim to minimise its visual impact as far as possible by
using a structure, which is slender in profile. All associated viaduct
structures e.g. OHL masts should be designed as an integral part of the
overall viaduct; •
The design
of the proposed noise enclosure and barriers north of Sheung Shui Station
should be designed to minimise visual impacts and visually integrate as far
as possible into the fabric of the urban context; •
Consideration
of the design of all slopes to minimise the extent of cutting and ensure the
design is in accordance with the
recommendations of the EIA ; |
Viaduct sections of the proposed scheme / all times North of Sheung Shui Station / all times Whole alignment / all times |
DDE/CC DDE/CC DDE/CC |
3 3 3 |
3 3 3 |
|
WBTC 25/93 Control of Visual Impact of Slopes |
|||
|
•
All
detailed landscape design to be carried out by a landscape architect; •
All
landscape works are carried out in accordance with the specifications, and; •
The
planting of trees and shrubs are carried out properly and within the right
season. |
Whole alignment / all times |
CC |
3 3 |
3 3 3 |
|
|
|||
Section 5 |
Operational Mitigation Measures
The newly planted trees, shrubs and grassed areas are maintained throughout the establishment period, particularly in respect of the following: •
Regular
watering, weeding and fertilising of all tree and shrub planting and areas of
grass reinstatement; •
Regular
grass cutting for reinstated areas; •
Firming up
of trees after periods of strong winds; •
Regular
checks for and eradication of pests, fungal infection etc; •
Pruning of
dead or broken branches; and •
Prompt
replacement of dead plants and reseeding of failed areas of grass to ensure
the landscape mitigation measures fulfill their design intention. |
Whole alignment
/ all times |
CC |
|
3 |
3 |
EIAO TM |
|||
Section 6 |
Water Construction
mitigation measures With reference to Section 6 of the EIA report,
the Contractor shall provide mitigation measures to meet environmental
protection requirements as described below. |
|
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3 |
3 |
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|||
Section 6 |
(a)
At the start of site establishment perimeter
cut-off drains shall be constructed to direct off-site water around the site,
and internal drainage works and erosion and sedimentation control facilities
shall be implemented. Channels, earth bunds or sand bag barriers shall be
provided on site to direct stormwater to silt removal facilities. The design
of efficient silt removal facilities should be based on the guidelines in
Appendix A1 of ProPECC PN 1/94. All the surface runoff or extracted ground
water contaminated by silt and suspended solids should be collected by the
on-site drainage system and diverted through the silt traps prior to
discharge. |
Whole alignment / all times |
CC |
|
3 |
|
ProPECC PN 1/94 WPCO |
|||
|
(b)
The overall slope of the site shall be kept to
a minimum to reduce the erosive potential of surface water flows , and all
trafficked areas and access roads shall be protected by coarse stone ballast. |
Whole alignment / all times |
CC |
|
3 |
|
WPCO |
|||
|
(c)
The Contractor shall ensure that works take
place in the dry season as far as practicable or else additional temporary
works such as cofferdam or temporary earth bund will be required to minimise
runoff and pollution from the works entering the water column. Water
collecting behind the cofferdam shall be either pumped onto the land-bank or
collected, settled and pH adjusted to 8.5 or less before being allowed to
enter the channels. Concrete works on the footbridge across Shenzhen River
should implement appropriate drainage to prevent concrete washings entering
the environment. |
Whole alignment/all times |
CC |
|
3 |
|
ProPECC PN 1/94 |
|||
|
(d)
Wheel washing facilities and sediment traps
shall be provided at each site exit. |
All site exists/all times |
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|||
Section 6 |
(e)
Open stockpiles of construction materials
(e.g. aggregates, sand and fill material) on site shall be protected from
erosion during rainstorms. Measures shall be taken to prevent the washing
away of construction materials, soil, silt or debris into any drainage
system. Hydroseeding should be used where practical. |
Whole alignment/all times |
CC |
|
3 |
|
ProPECC PN 1/94 |
|||
|
(f)
All vehicles and plant shall be cleaned before
leaving the construction site to ensure no earth, mud or debris is deposited
by them on roads. A wheel washing bay shall be provided at every site exit.
The wheel washing bay shall be designed and sited to accommodate the
predicted through put of vehicles and shall have an associated sedimentation
facility that is capable of removing the sand and silt from the wash-water.
The settled out sand and silt shall be removed at least on a weekly basis to
ensure the continued efficiency of the process. The section of access road
leading to, and exiting from, the wheel-wash bay to the public road shall be
paved with sufficient backfill toward the wheel-wash bay to prevent vehicle
tracking soil and silty water to public roads and drains. |
Whole alignment/all times |
CC |
|
3 |
|
WPCO |
|||
Section 6 |
(g)
The transport of sediment to the environment shall
be minimised by the installation of appropriate sediment traps within the
drainage system. Sediment traps shall be designed with adequate capacity, and
shall be regularly maintained. |
whole alignment/all times |
CC |
|
3 |
|
ProPECC PN 1/94 |
|||
|
(h)
Wastewater generated from the washing down of
mixer trucks and drum mixers and similar equipment should be recycled. The
discharge of wastewater should be kept to a minimum. |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
|
(i)
Wastewater generated from construction
activities should be discharged into an excavated sedimentation pit prior to
discharge. The pit should be unlined to allow for infiltration of water into
the ground and setting of concrete before disposal. |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
|
(j)
In the case of an unlined pit for all types of
wastewater being settled out, water infiltration into the ground requires a
license from EPD under the WPCO regulations. Where a license cannot be
obtained, or if water re-use is practised, the pit may need to be lined,
which requires more frequent removal of the contents. |
whole alignment/all times |
CC |
|
3 |
|
WPCO |
|||
|
(k)
Measures shall be taken to minimise the
ingress of site drainage into excavations. If the excavation of trenches in
wet periods is necessary, they shall be dug and backfilled in short sections
wherever practicable. Water pumped out from trenches or foundation
excavations should be discharged into storm drains via silt removal
facilities. |
whole alignment / all times |
CC |
|
3 |
|
WPCO |
|||
Section 6 |
(l)
Oil interceptors shall be provided in Site
compounds and regularly emptied to prevent release of oils and grease into
the surface water drainage system after accidental spillages. The interceptor
shall have a bypass to prevent flushing during periods of heavy rain. Oil and
fuel bunkers shall be bunded to prevent discharge due to accidental spillages
or breaching of tanks. |
Whole alignment/all times |
CC |
|
3 |
|
ProPECC PN 1/94 |
|||
|
(m)
Any waters entering storm drains must have a
pH less than 8.5. Under normal circumstances, surplus wastewater may be
discharged into foul sewers after treatment in silt removal and pH adjustment
facilities (to within the pH range of 6 to 9). Disposal of wastewater
into storm drains will require more elaborate treatment. Surface run-off
should be segregated from the concrete batching plant and casting yard area,
if used, and diverted to the stormwater drainage system. Surface run-off
contaminated by materials in a concrete batching plant or casting yard, if
used, should be adequately treated before disposal into stormwater drains. |
Whole alignment/all times |
CC |
|
3 |
|
ProPECC PN 1/94 |
|||
|
(n)
Runoff should be prevented from entering
adjacent ponds through construction of bunds between works areas and ponds. |
Whole alignment/all times |
CC |
|
3 |
|
-- |
|||
Section 6 |
(o)
The Contractor shall take all reasonable
measures to minimise adverse impacts resulting from construction activities
associated with the removal of sediments. These measures shall include
ensuring that all plant and equipment and working methods meet the following
criteria. • utilising
appropriate suspended solids containment screen while removing sediment; • minimise
disturbance of the channel/pond bed while dredging; |
Whole alignment/all times |
CC |
|
3 |
|
- |
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|
• minimise
leakage of dredged sediment during lifting through the use of closed grabs
where practical; and • prevent
the overflowing of any hopper used to contain removed sediments. |
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• in
large scale dredging works a silt curtain should be installed around the
dredging grab. |
fishpond/channel areas/all times |
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|
• in
smaller scale works a barrier of sand bags should enclose the area. |
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• dredging
should be undertaken during the dry season whenever possible. |
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|
• sediments
should be removed from site immediately or stored away from the water course. |
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|||
Section 6 |
(p)
The Contractor shall be responsible for
disposing of all dredged sediments at an appropriate location depending on
the volume and composition of the material. |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
|
(q)
If any office, works area canteen or toilet
facilities are erected, foul water effluent should be directed to a foul
sewer or to a sewage treatment facility either directly or indirectly by
means of pumping or other means approved by the Engineer. |
whole alignment/all times |
CC |
|
3 |
|
ProPECC PN 1/94 |
|||
|
(r)
Temporary on-site storage of excavated
materials from station and depot construction works shall be covered with
tarpaulin or similar fabric during rainstorms. Any washout of construction or
excavated materials should be diverted to the drainage system via sediment traps.
Stockpiling of the excavated material can be minimised by scheduling the
construction programme in a way that one section of the alignment can be
constructed and completed before the excavation works of the next. |
whole alignment / all times |
CC |
|
3 |
|
ProPECC PN 1/94 |
|||
|
(s)
A cofferdam should be constructed during
footbridge construction at Shenzhen River. |
Shenzhen River/ during bridge construction. |
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(t)
Regular maintenance of all drainage systems is
necessary. |
All drainage systems/all times |
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(u)
Chemical wastes should be
collected, stored and disposed of in accordance with the Code of Practice on the Packing, Labelling and Storage of Chemical
Waste. |
Whole alignment/all times |
CC |
|
3 |
|
WDO (Cap 354) |
|||
|
(v)
If contaminated material is excavated it will
require treatment before disposal to WENT landfill. If excavated material is
heavily contaminated it may require disposal to SENT landfill. |
Excavation areas/all times |
CC |
|
3 |
|
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|
(w)
Transfer of material onto barges should be
carried out slowly to prevent contamination. |
sandfill location/all times |
CC |
|
3 |
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|||
|
(x)
Transfer of materials onto the platform should
be carried out slowly to avoid sand falling off the conveyor. |
Platforms/all times |
CC |
|
3 |
|
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|||
|
Operational
mitigation measures The following measures should be adopted for
the operation of the Spur Line alignment: |
whole alignment Des, C & O stages |
DDE/CC |
3 |
3 |
3 |
|
|||
|
A surface water drainage system shall be
provided to collect track runoff. Where oils and lubricating fluids could be
spilt, the track drainage channels discharge shall pass through oil
interceptors and sediment traps to remove oil, grease and sediment before
being diverted to the public storm water system. |
whole alignment
Des, C & O stages |
DDE/CC |
3 |
3 |
3 |
|
|||
|
Silt traps, sediment basins and oil interceptors
shall be designed to appropriate design standards, and whilst in use,
regularly cleaned and maintained in good working order. The efficiency of
these installations is dependent on regular cleaning and maintenance. |
whole alignment
Des, C & O stages |
DDE/CC |
3 |
3 |
3 |
ProPECC PN 5/93 |
|||
Section 6 |
On-site drainage shall focus on areas where
contaminated effluent may be generated and provide a clear segregation of
clean and contaminated effluents. |
whole alignment
Des, C & O stages |
DDE/CC |
3 |
3 |
3 |
ProPECC PN 5/93 |
|||
|
Oily contents of oil interceptors shall be
collected for recycling, or transferred to an appropriate disposal facility |
whole alignment
Des, C & O stages |
DDE/KCRC |
3 |
3 |
3 |
|
|||
|
The design of the footbridge should minimize
disturbance of the sediment through careful design of the size and shape of
pier supports. |
footbridge at LMC station/Des |
DDE (for footbridge) |
3 |
3 |
3 |
|
|||
|
Sewage Effluent from Station Works Force Water quality impacts caused by sewage
effluent generated by the work force at the station should be effectively
controlled through on-site waste water treatment facilities prior to
discharge to the reedbed system located to the east of Lok Ma Chau Station.
The reedbed system requires sufficient capacity to be able to polish the
sewage treatment plant effluent and a proportion of river water to comply
with ZDP. |
|
DDE/CC |
3 |
3 |
3 |
Technical Memorandum Standards for Effluents
Discharged into Drainage and Sewerage Systems, Inland and Coastal Waters
(TM). |
|||
|
Monitoring The assessment of water quality impacts has
concluded that routine environmental monitoring of water quality during
construction should be carried out as specified in the EIA report, to
minimize impacts on downstream water quality. The specified mitigation
measures should be written into contract documents. |
All sites/construction |
CC |
3 |
|
|
-- |
|||
Section 6 |
Routine audit of the implementation status of
specified mitigation measures during the construction and operation phases
should be undertaken by the project proponent or his representative. Such
audits should be well documented and include action procedures in the case of
non-compliance. |
All sites/ Construction |
CC |
|
3 |
|
|
|||
Section 7 |
Air Quality Construction
mitigation measures Regular watering of haul roads to maintain
surface wet. In order to meet this requirement, watering should be carried
out at least twice a day and a water refilling system should be installed so
that the water refilling time should be less than ten minutes. |
whole alignment/all times |
CC |
|
3 |
|
APCO, APCR, LS2 to Gazette 14 Part III.14 |
|||
|
Effective water sprays shall be used during
delivery and handling of sand and aggregate and similar materials when dust
is likely to be created and to dampen all stored materials during dry and
windy weather. |
whole alignment/all times |
CC |
|
3 |
|
APCR, LS2 Part IV.19 |
|||
|
All stockpile of excavated material shall be
either covered entirely by impervious sheeting or sprayed with water so as to
maintain it in a damp condition. |
whole alignment / all times |
CC |
|
3 |
|
APCR LS2 Part IV 19 |
|||
|
Stockpiles greater than 20 m³ should be
enclosed on 3 sides with walls extending above the pile and 2 m beyond
the front of the pile. |
Whole alignment/all times |
CC |
|
3 |
|
|
|||
Section 7 |
Any conveyor system used for transfer of dusty
materials should be fitted with wind boards on all sides, enclosures at
conveyor transfer points and hopper discharge areas, three sided roofed
enclosure with flexible curtain across the entry, conveyor belt cleaners and
exhaust fans with suitable fabric cleaner. |
whole alignment/all times |
CC |
|
3 |
|
APCR, LS2 Part IV.20 |
|||
|
The Contractor shall confine haulage and
delivery vehicles to designated roadways inside the Site. Any motorized
vehicle causing dust nuisance shall be restricted to a maximum speed of
15 km per hour while within the Site. |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
|
Where a site boundary adjoins a road, street
service lane or other area accessible to the public, hoarding of not less
than 2.4 m above ground level shall be provided along the entire length
of that portion of the site boundary except for any site entrances or exits. |
whole alignment / all times |
CC |
|
3 |
|
APCR, LS2 Part III, 13 |
|||
|
Wheel washing facilities shall be installed
and used by all vehicles leaving the Site. No earth, mud, debris, dust and
the like shall be deposited on public roads. Water in the wheel cleaning
facility shall be changed at frequent intervals and sediments shall be
removed regularly. |
whole alignment/all times |
CC |
|
3 |
|
APCR, LS2 Part III.B and Part IV.A |
|||
|
All site vehicle exhausts should be directed
upwards or away from the ground. |
whole alignment/all times |
CC |
|
3 |
|
|
|||
Section 7 |
Sites used for the storage of cement or dry
pulverised fuel ash shall not be overfilled. |
whole alignment / all times |
CC |
|
3 |
|
Best Practicable Means Requirements for Cement
Work (Concrete Batching Plant) |
|||
|
Any vent or exhaust to a site or other part of
the concrete batching facility shall be filled with an effective fabric
filter. |
whole alignment / all times |
CC |
|
3 |
|
Best Practicable Means Requirements for Cement
Work (Concrete Batching Plant) |
|||
|
The filter bags in the cement site dust
collector must be thoroughly shaken after cement is blown into the site to
ensure adequate dust collection for subsequent loads. |
whole alignment / all times |
CC |
|
3 |
|
Best Practicable Means Requirements for Cement
Work (Concrete Batching Plant) |
|||
|
For dry mix batching, the truck batching
aperture shall be shrouded and filted with water. |
whole alignment / all times |
CC |
|
3 |
|
Best Practicable Means Requirements for Cement
Work (Concrete Batching Plant) |
|||
Section 7 |
Any odorous material shall be removed from
site within one day to reduce the amount of time available for decomposition. |
whole alignment / all times |
CC |
|
3 |
|
Annex 4 of EIAO TM |
|||
|
Any odorous materials shall be immediately
covered with plastic tarpaulin sheets prior to its removal from site. |
whole alignment / all times |
CC |
|
3 |
|
Annex 4 of EIAO TM |
|||
|
EM
& A Requirements The assessment of air quality impacts has
concluded that it is unlikely that there will be any significant impacts along
the Spur Line alignment during both construction and operation phases.
Routine environmental monitoring of air quality during construction is
considered unnecessary. However, the specified mitigation measures should be
written into contract documents. |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
|
Routine audit of the implementation status of
specified mitigation measures during the construction and operation phases
should be undertaken by the project proponent or his representative. Such
audits should be well documented and include action procedures in the case of
non-compliance. |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
Section 8 |
Waste Construction
mitigation measures Upon appointment, the main contractor of each
construction contract should submit a Waste Management Plan which shall
describe the arrangements for avoidance, reuse, recovery and recycling,
storage, collection, treatment and disposal of different categories of waste
to be generated from the construction activities and shall take into account
the recommended mitigation measures in the EIA report. Such a management plan
shall incorporate site specific factors, such as the designation of areas for
segregation and temporary storage of reusable and recyclable materials. |
whole alignment / all times |
CC |
|
3 |
|
Waste Disposal Ordinance and Subsidiary
legislation. |
|||
|
The Contractor is responsible for waste
control within the construction site, removal of the waste material produced
from the site and implementation of any mitigation measure to minimise waste
or redress problems arising from the waste from the site. The waste material
may include any sewage, waste water or effluent containing sand, cement, silt
or any other suspended or dissolved material to flow from the site onto any adjoining
land, storm sewer, sanitary sewer, or any waste matter or refuse to be
deposited anywhere within the site or onto any adjoining land. |
Whole alignment/all times |
CC |
|
3 |
|
WDO Cap 354 |
|||
|
Waste should be handled in accordance with the
Construction Waste Management Strategy recommendations for handling of waste.
The hierarchy of management method is: avoidance, minimisation,
recycling/re-use, treatment, disposal. |
Whole alignment/all times |
CC |
|
3 |
|
-- |
|||
Section 8 |
When handling the waste material, the
following measures shall be undertaken by the Contractor: (i)
The Contractor shall be aware of, and comply
with, the Waste Disposal Ordinance,
the Public Health and Municipal
Services Ordinances, the Water
Pollution Control Ordinance and the Waste
Disposal (Chemical Waste) (General Regulation). |
Whole alignment/all times Whole alignment/all times |
CC CC |
|
3 3 |
|
WDO, PHMSO, WPCO, WD(CW) (GR |
|||
|
(ii)
The Contractor's attention is drawn to A Guide to the Chemical Waste Control
Scheme; A Guide to the Registration
of Chemical Waste Producers; and the Code
of Practice on the Packing, Labelling and Storage of Chemical Wastes. |
Whole alignment/all times |
CC |
|
3 |
|
CWCS RCWP CPPLSCW |
|||
|
(iii)
The Contractor shall segregate all inert
construction waste material suitable for reclamation or land formation and, if it is not possible to |
Whole alignment/all times |
CC |
|
3 |
|
WBTC 5/98 |
|||
|
(iv)
All non-inert construction waste material
deemed unsuitable for reclamation or land formation and all other waste
material shall be dumped at public landfill, after sorting for recycling and re-use. |
Whole alignment/all times |
CC |
|
3 |
|
WBTC 5/98 |
|||
|
(v)
The Contractor shall comply with and
complete the procedures in |
Whole alignment/all times |
CC |
|
3 |
|
WBTC 2/93 ProPECC PN3/94 |
|||
Section 8 |
(vi)
The Air
Pollution Control (Open Burning) Regulation came into effect on 26th
February 1995. This regulation prohibits open burning for the disposal of
construction waste or the clearance of a site in preparation for construction
work. Certain other types of open burning are allowed under permits issued by
the EPD. |
Whole alignment/all times |
CC |
|
3 |
|
APC(OB)R |
|||
|
(viii) Fossil fuel and used lubricants for trucks and machinery are classified as chemical wastes. The Contractor shall register with EPD as a chemical waste producer and observe all the requirements under the storage, labelling, transportation and disposal of chemical waste. Chemical wastes shall be collected by a licensed collector. |
Whole alignment/all times |
CC |
|
3 |
|
WDO(CW) (GR) |
|||
|
(ix) The Contractor shall prevent fuel and lubricating oil leakage from plant and storage sites from contaminating the construction site. All compounds in works areas shall be located on areas of hardstanding with provision of drainage channels and settlement lagoons where necessary to allow interception and controlled release of settled water; and provision of bunding for all potentially hazardous materials on Site including fuels. The Contractor shall prepare a spill action plan and keep suitable clean-up materials on site. The contractor shall record the amount of waste
generated, recycled and disposed of (including the disposal sites). The contractor shall use a trip ticket system for
the disposal of C&D materials to any designated public filling facility
and/or landfill. Training shall be provided for workers about the
concepts of site cleanliness and appropriate waste management procedure,
including waste reduction, reuse and recycling. |
Whole alignment/all times |
CC |
|
3 |
|
WDO(CW) (GR) |
|||
Section 8 |
(x) Care
must be taken to prevent spillages: (a) the
storage area for fuels and lubricants shall be isolated from working areas
and kept secure; (b) use
of fuels and lubricants shall be carried out with care; (c) any
spillage problem due to any truck and machinery shall not be ignored; (d) emulsifier
and absorbent shall be available on Site, so that immediate action can be
taken when there is minor spillage; (e) all
containers shall be stored so as to prevent any spillage of the contents and
disposed of carefully; and (f)
Concepts of `Site cleanliness' shall be
introduced to workers, to gather and store construction waste in an
appropriate manner. |
Whole alignment/all times |
CC |
|
3 |
|
WDO(CW) (GR) |
|||
|
(x)
Temporary waste facilities shall be set up by
the Contractor. Municipal waste shall be collected in black refuse bags and
delivered to, and disposed of at, an approved landfill. |
whole alignment/all times |
CC |
|
3 |
|
-- |
|||
Section 8 |
A core sampling programme should be undertaken
to ascertain the nature of the substratum. In the event of contaminated land
being encountered, it will be subject to the criteria specified in ProPECC
Pager (PN3/94) Contaminated Land Assessment and Remediation. |
whole alignment/Des |
DDE |
3 |
|
|
ProPECC PN 3/94 |
|||
|
Operation
mitigation measures For the operational phase, KCRC shall submit a
Waste Management Plan for the operation of Spur Line to EPD. The Plan shall
describe the arrangements for avoidance, reuse, recovery and recycling,
storage, collection, treatment and disposal of different categories of waste
to the generated from the operation of the Spur Line and should take account
of the recommended mitigation measures in the EIA report. |
whole alignment / all times |
KCRC |
|
3 |
|
|
|||
|
Monitoring |
|
|
|
|
|
|
|||
|
No monitoring is proposed to identify the
nature of waste arising. It is the responsibility of the Contractor to
measure the contaminant level of dredged mud and classify it before disposal.
The success of measures to minimise impact on the aquatic environment may be
reflected by water quality monitored as described in Section 6. |
|
|
|
|
|
-- |
|||
Section 9 |
Contaminated Land General
Mitigation Measures Where contaminated land has been shown to
exist following the testing proposed by the CAP the following measures will
be implemented to minimise potential exposure to contaminated materials. |
|
|
|
|
|
|
|||
|
•
Use truck earth-removing excavator equipment
to minimise the potential interface of contaminated materials with site
construction workers; |
where contamination is present/all times |
CC |
|
3 |
|
ProPECC PN 3/94 |
|||
|
•
When interacting directly with contaminated
material, site personnel shall wear appropriate clothing, i.e. personal
protective equipment such as gloves, in order to minimise their exposure to
any contaminated material. Adequate hygiene and washing facilities shall be
provided and smoking and eating shall be prohibited during such activities; |
where contamination is present/all times |
CC |
|
3 |
|
ProPECC PN 3/94 |
|||
|
•
Vehicles containing contaminated materials
shall be suitably covered to limit potential dust emissions or contaminated
wastewater run-off, and truck bodies and tailgates sealed to prevent any
discharge during transport or during wet conditions; |
where contamination is present/all times |
CC |
|
3 |
|
ProPECC PN 3/94 |
|||
Section 9 |
•
Only licensed waste hauliers shall be used to
collect and transport any contaminated sediments to an appropriate disposal
site and procedures shall be developed to ensure that illegal disposal of
wastes does not occur; |
where contamination is present / all times |
CC |
|
3 |
|
Waste Disposal Ordinance (Cap
354) Waste Disposal (Chemical Waste) (General)
Regulations (Cap 354) |
|||
|
•
Prior agreement shall be sought with the
Facilities Management Group of the EPD regarding the acceptability of
disposal of any contaminated sediments to landfill or other suitable disposal
locations; |
where contamination is present / all times |
CC |
3 |
3 |
|
Waste Disposal Ordinance (Cap
354) Waste Disposal (Chemical Waste) (General)
Regulations (Cap 354) |
|||
|
•
The necessary waste disposal permits shall be
obtained, as required from the appropriate authorities; |
where contamination is present / all times |
CC |
3 |
3 |
|
Waste Disposal Ordinance (Cap
354) Waste Disposal (Chemical Waste) (General)
Regulations (Cap 354) |
|||
Section 9 |
•
Records of the quantities of wastes generated
and disposed of shall be maintained; |
whole alignment / all times |
CC |
|
3 |
|
Waste Disposal Ordinance (Cap
354) Waste Disposal (Chemical Waste) (General)
Regulations (Cap 354) |
|||
|
•
In accordance with good construction practice,
silt traps shall be used to reduce the impact to drainage caused by suspended
solids (SS) arising from disturbed ground, or any construction materials such
as cement and gravel Goundwater shall be disposed of in accordance with the
WPCO. |
whole alignment / all times |
CC |
|
3 |
|
Water Pollution Control Ordinance (WPCO) |
|||
|
A stand alone CAP has been prepared and
submitted for the approval of the EPD. Following amendment (if necessary) and
approval by EPD, the CAP will be implemented and the findings will be
reported in the Contaminated Assessment Report (CAR). If land contamination
is confirmed, a Remediation Assessment Plan (RAP) shall be prepared, and both
the CAR and the RAP shall be submitted as a combined report to the EPD for
approval. If applicable and required in consultation with the EPD, the contaminated
site shall be remediated in accordance with the approved CAR/RAP. |
whole alignment / all times |
CC |
3 |
|
|
EIAO TM Annex 19/3.1.1 & 3.1.2 |
|||
Section 11 |
Cultural and Heritage Resources Construction
mitigation measures. During all excavations, attention should be
paid to the presence of any artefacts which indicate archaeological remains.
In particular, the Ho Sheung Heung area should be carefully monitored during
excavation for viaduct columns. Screen planting should be carried out within
Ho Sheung Heung village to screen notable historical buildings from visual
impacts. |
whole alignment / all times Ho Sheung Heung / during construction |
KCRC |
|
3 3 |
|
-- |
|||
Note This Implementation Schedule is based on information provided in the EIA and EM&A for the preliminary design and will be subject to review during subsequent stages of the project.
* Des=Design;
C=Construction; O=Operation;
KCRC=Kowloon
Canton Railway Corporation;
DDE=Detailed
Design Engineer;
CC=Construction
Contractor.
APCO Air
Pollution Control Ordinance
APCR,LS2 Air
Pollution Control Regulation, Legal Supplement 2
NCO Noise
Control Ordinance
NCR(HPB) Noise
Control Regulation (Hand-held Percussive Breakers)
NCR(AC) Noise
Control Regulation (Air Compressors)
ProPECC Professional
Persons Practice Note 1 (1994)
PN1/94
WDO Waste
Disposal Ordinance
PHMSO Public
Health and Municipal Services Ordinances
WPCO Water
Pollution Control Ordinance
WD(CW)(GR) Waste Disposal (Chemical Works)(General Regulations)
ProPECC Professional
Persons Practice Note 3(1994)
PN3/94
CWCS A
guide to the Chemical Waste Control Scheme
RCWP A
guide to the Registration of Chemical Waste Producers
CPPLSCW Code
of Practice on the Packing, Labelling and Storage of Chemical Wastes
WBTC
5/98 Works
Branch Technical Circular No. 5 (1998)
APC(OB)R Air
Pollution Control (Open Burning) Regulation