1.1
General
1.1.1
An application (No.
ESB-196/2008) for an Environmental Impact Assessment (EIA) Study Brief under
section 5(1) of the Environmental Impact Assessment Ordinance (EIAO) was
submitted by the Civil Engineering and Development Department (CEDD) on 17 July
2008 with a Project Profile (No.PP-362/2008) for Cross Bay Link (CBL), Tseung
Kwan O (The Project). EPD issued an EIA Study Brief (No. ESB-196/2008) in
August 2008 to the Project Proponent, CEDD, to carry out an EIA study.
1.1.2
Ove Arup & Partners
Hong Kong Limited (Arup) has been commissioned by CEDD to undertake the
Investigation Assignment of CBL as well as an EIA according to the EIAO for
identification and evaluation of the environmental impacts and the mitigation
measures required.
1.1.3
The Project is a designated
project under Part I of Schedule 2 to the EIAO (Cap. 499) and hence
Environmental Permits (EPs) are required for its construction and operation.
1.1.4
Drawing no. 209506/EMA/IN/001 shows the
proposed alignment of CBL.
1.1.5
Together with
Route 6, including the Tseung Kwan O – Lam Tin Tunnel (TKO-LT Tunnel), the CBL
will provide an east-west highway link between Kowloon and Tseung Kwan O South.
1.2
Background Information & Previous
Studies
1.2.1
The “Feasibility Study for
Further Development of Tseung Kwan O (TKO)”, which was commissioned by CEDD in
July 2002 and substantially completed in 2005, recommended that a new external
road network comprising CBL and Tseung Kwan O – Lam Tin Tunnel (TKO-LT Tunnel)
should be provided around 2016 to meet the anticipated traffic flow.
1.2.2
CBL would be a dual
two-lane carriageway of approximately 1.8 km long across the Junk Bay mainly on
viaduct, connecting TKO-LT Tunnel to Wan Po Road at the southeastern part of
TKO. The viaduct section of CBL has a
cycle track and footpath in addition to the road carriageway.
1.2.3
The proposed CBL is at
close distance to the Northern Bridge (NB) and the proposed Southern Bridge
(SB) located at the Eastern Channel of TKO.
As suggested by the Advisory Committee on the Appearance of Bridges and
Associated Structures (ACABAS) in the 251st ACABAS meeting held on
21st December 2004, it is necessary to match the design of CBL, SB
and NB in respect of their aesthetic design, appearance and structural form.
1.2.4
On 9th March
2009, CEDD commissioned Arup as the Consultant to undertake the Investigation
Assignment of Cross Bay Link, Tseung Kwan O under Agreement No. CE 43/2008 (HY)
with commencement date of 16th March 2009.
1.3
Purpose
of the Manual
1.3.1
The purpose of this
Environmental Monitoring and Audit (EM&A) Manual is to guide the set up of
an EM&A programme to ensure compliance with the EIA study recommendations,
to assess the effectiveness of the recommended mitigation measures, and to
identify any further need for additional mitigation measures or remedial
action. This Manual outlines the
monitoring and audit programme for the construction and operational phase of
the proposed Project. It aims to provide
systematic procedures for monitoring, auditing and minimising environmental
impacts associated with construction works and operational activities.
1.3.2
Hong Kong environmental regulations and the Hong Kong Planning
Standards and Guidelines have served as environmental standards and guidelines
in the preparation of this Manual. In
addition, the EM&A Manual has been prepared in accordance with the
requirements stipulated in Annex 21 of the EIAO-TM.
1.3.3
This
Manual contains the following information:
·
Rresponsibilities of the Contractor, the Engineer or Engineer’s
Representative (ER), Environmental Team (ET), and the Independent Environmental
Checker (IEC) with respect to the EM&A requirements during the course of
the project.
·
Project organisation for the
project.
·
The basis for and description
of the broad approach underlying the EM&A programme.
·
Requirements with respect to
the construction programme schedule and the necessary environmental monitoring
and audit programme to track the varying environmental impact.
·
Details of the methodologies to
be adopted, including all field laboratories and analytical procedures, and
details on quality assurance and quality control programme.
·
The rationale on which the
environmental monitoring data will be evaluated and interpreted.
·
Definition of Action and Limit
levels.
·
Establishment of Event and
Action plans.
·
Requirements for reviewing
pollution sources and working procedures required in the event of
non-compliance with the environmental criteria and complaints.
·
Requirements for presentation
of environmental monitoring and audit data and appropriate reporting
procedures.
·
Requirements for review of EIA
predictions and the effectiveness of the mitigation measures / environmental
management systems and the EM&A programme.
1.3.4
For
the purpose of this manual, the ET leader, who shall be
responsible for and in charge of the ET, shall refer to the person delegated
the role of executing the EM&A requirements.
2.1
Project Description
2.1.1
The scope of the Project
will comprise the following:
1.
Construction of an
approximately 1.8 km long dual two-lane road mainly on viaduct with a footpath and
a cycle track.
2.
The associated civil,
structural, marine, ship impact protection, geotechnical, landscape, and
environmental protection and mitigation works.
2.1.2
The construction of a 900mm
diameter salt water main to link up the trunk salt water supply system along
Wan Po Road to those in TKO Town Centre and Tiu Keng Leng was previously
considered to be mounted along
the bridge structure of CBL and was therefore part of
the scope of the Project. However, due to serious concern on the structural integrity and future maintenance for the inclusion of the salt water main
in the bridge structure of CBL, an alternative route is proposed for the construction of the salt water main,
which is now no longer mounted on CBL. The construction
of the salt water main is therefore excluded from the scope of this Project.
2.1.3
The alternative route of
the salt water main would not be within any country park nor any conservation
area, site of cultural heritage, marine park and marine reserve or Site of
Special Scientific Interest. The pipe laying works would not involve dredging
operation within 100m from the seawater intake point at TKO Area 86. Hence, the
proposed 900mm salt water main is considered not a Designated Project.
2.1.4
Given that the salt water
main is no longer within the scope of CBL and its construction programme is
uncertain at this stage, the salt water main is not addressed in this EIA
report for the CBL Project and is excluded from consideration by the EM&A
Manual.
2.2
Implementation Programme
2.2.1
CBL is
targeted to be commissioned by 2020. To meet this target the tentative commencement year for the construction of CBL would be end of 2016 and
would take approximately 4 years for completion.
2.2.2
Appendix A shows the
tentative construction programme for the Project. All the key construction activities are shown
with the tentative dates for commencement and completion.
2.2.3
Detailed
EIA assessments have been conducted and presented in the EIA report. All necessary mitigation measures have also
been identified and recommended, as listed by the Environmental Mitigation
Implementation Schedule (EMIS) presented in Appendix B. The EMIS
specifies the extent, locations, time frame and responsibilities for the
implementation of the environmental mitigation measures identified and
recommended by the EIA report.
2.3
Concurrent Projects During Construction
Phase
2.3.1
The major existing /
planned concurrent projects are listed below:
Tseung Kwan O – Lam Tin Tunnel (TKO-LT Tunnel)
2.3.2
With reference to the
Project Profile (PP-361/2008) and the EIA Study Brief (ESB-195/2008) on
TKO-LT Tunnel, the project is to construct a dual two-lane highway connecting TKO
at Po Yap Road in the east with Trunk Road T2 in Kai Tak Development in the
west and Lei Yue Mun Road Underpass. The
project involves a 4.8km long highway with about 3km of the highway in the form
of a tunnel. The TKO-LT Tunnel will connect CBL to form a new external road link to meet the anticipated
traffic flow in connection with further population intake and development in
TKO New Town.
2.3.3
TKO-LT Tunnel is a separate DP
under the EIAO and hence a separate EIA Study has been conducted by the project
proponent to address all the impacts (and also including cumulative impacts) during both the construction and
operational phases.
2.3.4
According to the
information provided by the TKO-LT Tunnel working team, the construction of the TKO-LT Tunnel would tentatively
commence in mid-2016 for completion in 2020. The reclamation works for TKO-LT Tunnel are scheduled between
July 2018 and October 2018. These would overlap with the
marine works of CBL which are proposed to take place between May 2017 and
August 2018. Therefore, potential cumulative water quality impacts during
construction phase are anticipated and have been addressed in the EIA (see Section 8 of the EIA for further
discussion on water quality and Section’s
10 and 11 of the EIA for
fisheries and marine ecology).
2.3.5
Construction sites
associated with TKO-LT Tunnel are located beyond the study areas of the CBL noise and air quality
assessments. Cumulative noise and air quality impacts from TKO-LT Tunnel during the construction
phase are therefore not anticipated (see Section
5 & 6 of the EIA for further
discussion on air and noise quality).
Trunk
Road T2
2.3.6
With reference to the
Project Profile (PP-379/2009), T2 is a dual two-lane trunk road of about
3km, with 2.7km of tunnel. T2, together with the proposed Central Kowloon Route
(CKR) and TKO-LT Tunnel will form a new strategic highway network,
namely, Route 6.
2.3.7
T2 is a separate DP under
the EIAO and hence a separate EIA Study will be conducted by the project
proponent to address all the impacts (including cumulative impacts) during both
the construction and operational phases.
2.3.8
According to the most
recent information provided by the T2 project team, as the T2 tunnel is now
envisaged as being constructed using Tunnel Boring Machine (TBM), no dredging
works are planned to be carried out for the T2 project. However, as a conservative approach, the CBL
EIA has considered potential cumulative water quality impacts in the event that
the construction method of T2 reverted to dredged immersed tube tunnel
construction (see Section 8 of the
EIA for further discussion on water quality).
Shatin
to Central Link (SCL)
2.3.9
The Shatin to Central Link
(SCL) will be a through-running line between Tai Wai and the Central Business
District of Hong Kong Island. This new strategic railway corridor will increase
significantly the cross-harbour and Shatin to Kowloon rail capacities and help redistribute
the flows and relieve other railway lines in Hong Kong and Metro Kowloon.
2.3.10
SCL is a separate DP under
the EIAO and hence a separate EIA Study has been undertaken by the respective
project proponent to address all the impacts (including cumulative impacts)
during both construction and operational phases.
2.3.11
According to information
from the project proponent of the SCL, the project commenced in 2012 and all major construction works are anticipated to be completed in 2020.
2.3.12
The dredging work for SCL
is scheduled from July 2012 to December 2012 for the Kai Tak Runway barging
point and also in 2016 for the submarine railway tunnel from Hung Hom to
Admiralty Station. This would overlap with the marine works programme of
CBL. Hence, the cumulative water quality impacts during the construction phase
of CBL have been considered (see Section 8 of the EIA for further discussion on water quality).
Cruise
Terminal
2.3.13
The development of the
Cruise Terminal in Kai Tak is one of the key features in the South East Kowloon
Development (SEKD) for formation of a new tourism, sports and recreation centre
in the Metro Area.
2.3.14
According to the EIA report on the “Installation
of Submarine Gas Pipelines and Associated Facilities from To Kwa Wan to North
Point for Former Kai Tak Airport Development” (EIA-182/2010), the cruise terminal is planned to be implemented in two phases.
Dredging work for Phase I Berth (the southern portion) was scheduled between
2011 and 2012, and the tentative programme for Phase II Berth dredging work is planned to be between 2013 and
2014.
2.3.15
No cumulative impact on water quality is anticipated during the
construction phase of CBL but impacts, including cumulative impact on
hydrodynamic regime, have been considered (see Section 8 of the EIA for further discussion
on water quality).
Tseung Kwan O (TKO) Area 86 Development
2.3.16
TKO
Area 86 property development has a site area of about 33 hectares. The development is expected to comprise some
21,500 flats in 50 residential towers and will be home to a population of
58,000 people. It will also provide
retail accommodation of about 50,000m2 and comprehensive GIC
facilities including educational institutes, nurseries, and a community hall, etc. The total
landscaped area in the development site will be about 55,000m2,
which includes the Central Park of 19,000m2.
2.3.17
According to the indicative
development programme of Area 86, the site is already under construction and
the construction period is expected until 2020. Area 86 is therefore a concurrent project and
the associated cumulative air and noise quality impacts during construction
phase have been considered in this EIA (see Section 5 and 6 for
further discussion on air and noise quality respectively).
Submarine Gas Pipelines
2.3.18
An EIA has been conducted
for the “Installation of Submarine Gas Pipelines and Associated Facilities from
To Kwa Wan to North Point for Former Kai Tak Airport Development”
(EIA-182/2010).
2.3.19
According to the EIA report
(EIA-182/2010), the construction would commence in January 2012 and be
completed in June 2014. Dredging is
required for the period from
April 2012 to December 2012 and therefore will be completed before the CBL
works commence. The installation of the
submarine gas pipelines and associated facilities are therefore not included as
a concurrent project with CBL.
Hong Kong Offshore Wind Farm in Southeastern Waters
2.3.20
With reference to the
Project Profile and the EIA Study Brief (ESB-146/2006), the Project is to
construct and operate an offshore wind farm in the Southeastern waters of Hong Kong. The project
component includes an installation of up to 67 wind turbines, an offshore
transformer platform, sub-sea collection and transmission cables, and Research
Mast. There will be a
landing cable area and proposed cable at the west of Junk Bay connecting the
collection cables from the turbines and the CLP existing grid connection
network.
2.3.21
According
to the latest information provided by CLP, marine works (including dredging,
jetting and suction caisson) for the construction of the wind farm would be required for the period from January 2017 to September
2017 which would overlap with the marine works programme of CBL. Hence, the cumulative water quality impacts during construction phase of
CBL have been considered in the EIA (see Section 8 of the EIA for further
discussion on water quality).
2.3.22
It is
anticipated that the distances from the proposed cable landing area and cable
route in Junk Bay to the identified noise sensitive receivers (NSRs) and air
sensitive receivers (ASRs) of CBL are larger than the 300m and 500m study areas,
respectively. Impacts arising from the wind farm construction work to the NSRs
and ASRs in the CBL study area are therefore not expected. Hence construction
of the wind farm would not have any contribution to the cumulative construction
noise and air quality impacts.
Planning review on
Development of ex-Cha Kwo Ling Kaolin Mine Site
2.3.23
The planning review on
development of ex-Kaolin Mine site was commissioned by the Planning Department
in July 2011 and is to be read as an update of the previous feasibility study
completed in 2003 by the Civil Engineering Department. It sets out to
examine the viability of private residential development at the upper platforms
of the development site. The purpose of
the study is to devise a development layout plan that is compatible and
cognisant with current and proposed development in the area.
2.3.24
The programme of this
planning review is not available at the time of preparation of this report, and
furthermore, the CKLKMS site would be located outside the 300m and 500m study
areas of the CBL project. The CKLKMS
project is therefore not included as a concurrent project with CBL.
Yau Tong Bay Development
2.3.25
The proposed Yau Tong Bay
(YTB) redevelopment is located in the southern part of East Kowloon on the
waterfront between Kwun Tong and Lei Yue Mun and the site is surrounded by Cha
Kwo Ling Road and Ko Fai Road. The Eastern
Cross Harbour Tunnel is located to the north of the redevelopment site, and to
the south of the redevelopment site lays the Yau Tong Industrial Area.
2.3.26
The overall site area on
the waterfront is approximately 10 hectares.
The low rise structures which were erected on the site in the past, such
as shipyards, timber yards and sawmills, etc., were demolished recently for
re-development. There is also an
existing ice making and cold storage factory operated by Dairy Farm, a salt
water pumping station operated by Water Supplies Department, and a site
reserved for CEDD’s maintenance depot, which is included as part of the
redevelopment.
2.3.27
The proposed redevelopment
is characterized by an urban development with 14 residential towers and 4
hotels, together with one GI/C block, clubhouses, retails and internal
roads. A minimum 15m wide promenade will
also be provided along the sea front for recreational use.
2.3.28
The construction works
would commence in early 2013 and are to be completed by 2017-2019. It is anticipated that the population in-take
year for the proposed redevelopment would begin around year 2017. As the project site is located outside the
300m and 500m study area, cumulative impacts during the construction phase of
CBL are not anticipated.
Proposed Residential Site at Kwun Tong
2.3.29
Three pieces of land in
Kwun Tong are suggested to be rezoned as residential land by the Planning
Department during the Kwun Tong District Council meeting held on 8 January
2013. The three sites are located at
Choi Hing Road, Ngau Tau Kok; Pik Wan Road/Ko Chiu Road Junction; and, Lei Yue Mun Path.
2.3.30
All three lands are located
outside the 300m and 500m study areas of CBL.
The proposed residential site at Kwun Tong is therefore not considered
as a concurrent project with CBL.
New Broadcasting House of Radio Television Hong Kong (RTHK)
2.3.31
The existing RTHK’s
broadcasting facilities and programme production centres came into operation in
1969, 1971 and 1975. Given the age of
the facilities and that they were inadequate to meeting RTHK’s service needs, a
site has been reserved in the sourthern part of TKO Area 86 for the
re-provisioning of the Broadcasting House.
The site is approximately 31,000m2.
2.3.32
As the location and the
programme of the construction site are still not yet approved, the new
broadcasting house of RTHK is not considered as a concurrent project with CBL.
The Beaumont Development
2.3.33
The Beaumont is a seven
tower residential development currently under construction at Area
85, Tseung Kwan O.
As the scheduled completion date is 31 December 2013, cumulative air and
noise impacts during the construction phase of CBL are not anticipated. The Beaumont Development is therefore not
considered as a concurrent project with CBL.
2.4
Concurrent Projects –
Operational Phase
2.4.1
During the operational phase of the CBL, it is anticipated that
potential cumulative noise and air quality impacts could arise from the TKO
Area 86 Development. Moreover, projects that could
affect the hydrodynamic regime during the operational phase of CBL include
TKO-LT Tunnel and Cruise Terminal.
2.5
Summary
2.5.1
Table 2.1 summarises the potential concurrent projects that would contribute to
the cumulative environmental impacts during construction and/or operational
phase.
Table 2.1 Existing and Planned Concurrent Projects
|
Project
|
Construction
Programme
|
Possible
Cumulative Impacts
|
|
Construction
Phase
|
Operational
Phase
|
|
Tseung Kwan O-Lam Tin Tunnel (TKO-LT Tunnel)
|
Commence
in early 2016,
for completion in late 2020
|
Water quality
Marine
ecology
|
Hydrodynamic
and water quality
|
|
Shatin
Central Link (SCL)
|
Commenced
in 2012 for completion in 2020
|
Water quality
|
Nil
|
|
Cruise
Terminal
|
Commenced
in late 2008 for completion in 2014
|
Water quality
|
Hydrodynamic and water quality
|
|
Trunk
Road T2
|
To
tie in with TKO LT Tunnel, between 2016 and
2020
|
Water quality
|
Nil
|
|
Tseung
Kwan O Area 86 Development – 33ha
|
Commenced in
early 2005 for completion in 2020
|
Airborne
noise
Fugitive dust
|
Nil
|
|
Submarine Gas Pipelines
|
Commenced
in 2012 for completion in 2014
|
Nil
|
Nil
|
|
Hong
Kong Offshore Wind Farm in Southeastern Waters
|
Commence
in early 2017 for completion in late 2017
|
Water quality
|
See Note
[1]
|
|
Planning
review on Development of ex-Cha Kwo Ling Kaolin Mine Site
|
Programme
is not available
|
Nil
|
Nil
|
|
Yau
Tong Bay Redevelopment
|
Commence
in 2013 for completion in 2017-2019
|
Nil
|
Nil
|
|
Proposed
Residential Site at Kwun Tong
|
Programme
is not available
|
Nil
|
Nil
|
Note:
[1] The wind farm location is outside the boundary of the
water quality model. Therefore the change of hydrodynamic regime contributed by
the wind farm is not considered in Section 8, Water Quality Impact Assessment.
3.1
Project
Organisation
3.1.1
The roles and
responsibilities of the various parties involved in the EM&A process, and
the organisational structure of the organisations responsible for implementing
the EM&A programme, are outlined below.
The proposed project organisation and lines of communication with
respect to environmental protection works are shown in Appendix C.
3.1.1.1
The Contractor
The Contractor shall report
to the Engineer. The duties and
responsibilities of the Contractor are:
·
Employ an Environmental Team
(ET) to undertake monitoring, laboratory analysis and reporting of
environmental monitoring and audit.
·
Provide assistance to the ET in
carrying out monitoring.
·
Submit proposals on mitigation
measures in case of exceedances of Action and Limit levels in accordance with
the Event and Action Plans.
·
Implement measures to reduce
impact where Action and Limit levels are exceeded.
·
Implement the corrective
actions instructed by the Engineer.
·
Accompany joint site inspection
undertaken by the ET.
·
Adhere to the agreed procedures
for carrying out complaint investigation.
3.1.1.2
Environmental Team
The ET shall report to the
Contractor and shall be employed to conduct the EM&A programme and ensure
the Contractor’s compliance with the project’s environmental performance
requirements during construction. The ET Leader shall be an independent party
from the Contractor and have relevant professional qualifications, or have
sufficient relevant EM&A experience subject to approval of the Engineer’s
Representative (ER) and the Environmental Protection Department (EPD). The ET
shall be led and managed by the ET Leader and the ET Leader shall possess at
least 7 years experience in EM&A and/or environmental management.
The duties and responsibilities
of the ET are:
·
Monitor various environmental
parameters as required in this EM&A Manual.
·
Analyse the environmental
monitoring and audit data and review the success of the EM&A programme, in
order to cost-effectively confirm the adequacy of mitigation measures
implemented and the validity of the EIA predictions, and to identify any
adverse environmental impacts arising.
·
Carry out regular site
inspection to investigate and audit the Contractor’s site practice, equipment
and work methodologies with respect to pollution control and environmental
mitigation, and take proactive actions to pre-empt problems; and, carry out ad
hoc site inspections if significant environmental problems are identified.
·
Audit and prepare monitoring
and audit reports on the environmental monitoring data and site environmental
conditions.
·
Report on the environmental
monitoring and audit results to the IEC, Contractor, the ER and EPD or its
delegated representative.
·
Recommend suitable mitigation
measures to the Contractor in the case of exceedance of Action and Limit levels
in accordance with the Event and Action Plans.
·
Adhere to the procedures for
carrying out complaint investigation.
3.1.1.3
Engineer or Engineer’s
Representative
The Engineer or it
delegated representative (ER) shall be responsible for overseeing the
construction works and for ensuring that the works undertaken by the Contractor
are in accordance with the specification and contractual requirements. The
duties and responsibilities of the Engineer or ER with respect to EM&A will
include:
·
Supervise the Contractor’s
activities and ensure that the requirements in the EM&A Manual are fully
complied with.
·
Inform the Contractor when
action is required to reduce impacts in accordance with the Event and Action
Plans.
·
Employ an IEC to audit the
results of the EM&A works carried out by the ET.
·
Participate in joint site
inspection undertaken by the ET.
·
Adhere to the procedures for
carrying out complaint investigation.
3.1.1.4
Independent Environmental
Checker
The IEC shall advise the Engineer’s
Representative on environmental issues related to the project. The IEC shall possess at least 7 years
experience in EM&A and/or environmental management.
The duties and
responsibilities of the IEC are:
·
Review and audit in an
independent, objective and professional manner over an EM&A programme;
·
Validate and confirm the
accuracy of monitoring results, monitoring equipment, monitoring locations,
monitoring procedures and locations of sensitive receivers;
·
Carry out random sample checks
and audit on monitoring data and sampling procedures, etc;
·
Conduct random site
inspections;
·
Audit EIA recommendations and
requirements against the status of implementation of environmental protection
measures on site;
·
Review effectiveness of
environmental mitigation measures and project environmental performances;
·
On a need basis, verify and
certify the environmental acceptability of a permit holder’s construction
methodology (both temporary and permanent works), relevant design plans and
submissions under an environmental permit. Where necessary, an IEC shall seek
the least impact alternative in consultation with Environmental Team (ET)
leader and a permit holder;
·
Verify investigation results of
complaint cases and effectiveness of corrective measures;
·
Verify an EM&A report that
has been certified by an ET leader;
·
Feedback audit results to
ET/Permit Holder according to Event/Action Plan in an EM&A manual.
3.1.2
Sufficient
and suitably qualified professional and technical staff shall be employed by
the respective parties to ensure full compliance with their duties and
responsibilities, as required under the EM&A programme for the duration of
the Project.
4.1
Introduction
4.1.1
The Contractor
shall prepare the Environmental Management Plan (EMP) (including a Waste
Management Plan), Construction Method Statement, and obtain approval from the
ER, IEC, EPD and other relevant authorities to encompass the recommended
environmental protection / mitigation measures with respect to its latest
construction methodology and programme.
4.2
Environmental Management Plan
4.2.1
A systematic
EMP shall be set up by the Contractor to ensure effective implementation of the
mitigation measures, monitoring and remedial requirements presented in the EIA,
EM&A and EMIS. The ER and the IEC
will audit the implementation status against the EMP and advise the necessary
remedial actions required. These
remedial actions shall be enforced by the ER through contractual means.
4.2.2
The
EMP will require the Contractor (together with its sub-contractors) to define
in detail how the recommended mitigation measures will be implemented in order
to achieve the environmental performance defined in Hong Kong environmental
legislation and the EIA documentation.
4.2.3
The
review of on-site environmental performance shall be undertaken by the ER and
the IEC through a systematic checklist and audit once the construction
commences. The environmental performance
review programme comprises a regular assessment on the effectiveness of the
EMP. Reference should be made to ETWBTC
19 / 2005 “Environmental Management on Construction Sites” or its latest
version, and any other relevant Technical Circulars.
4.3
Waste
Management Plan
4.3.1
As
part of the EMP, the Contractor shall include a WMP for the construction of the
project and submit to the ER, IEC and EPD for approval. Where waste generation
is unavoidable, the opportunities for recycling or reusing shall be maximised.
If wastes cannot be recycled, recommendations for appropriate disposal routes
shall be provided in the WMP. A method
statement for stockpiling and transportation of the excavated materials and
other construction wastes shall also be included in the WMP and approved before
the commencement of construction. All
mitigation measures arising from the approved WMP shall be fully implemented.
4.3.2
For
the purpose of enhancing the management of Construction and Demolition
(C&D) materials including rock, and minimising its generation at source,
construction shall be undertaken in accordance with the Environment, Transport
and Works Bureau Technical Circular (Works) No. 33/2002 - Management of
Construction and Demolition Material Including Rock, or its latest versions. The
management measures stipulated in the Technical Circular shall be incorporated
into the WMP.
4.4
Construction
Method Statement
4.4.1
In
case the Contractor would like to adopt alternative construction methods or
implementation schedules, it is required to submit details of methodology and
equipment to the ER for approval before the work commences. Any changes in construction method shall be
reflected in a revised EMP or the Contractor will be required to demonstrate
the manner in which the existing EMP should accommodate the proposed
changes. The Contractor may need to
apply for a Further Environmental Permit (FEP) from EPD before commencement of
any construction activities.
5.1
Air
Quality Parameters
5.1.1
The criteria against which
ambient air quality monitoring will be assessed are:
·
The Hong Kong Air Quality
Objectives (AQOs) for TSP, 24-hour TSP levels of 260 mg m-3; and
·
1-hour TSP limit of 500 mg m-3.
5.1.2
These levels are not to be
exceeded at Air Sensitive Receivers (ASRs).
5.1.3
Monitoring and audit of the
TSP levels shall be carried out by the ET to ensure that any deteriorating air
quality could be readily detected and timely action shall be undertaken to
rectify such situation.
5.1.4
Both 1-hour and 24-hour TSP
levels shall be measured to indicate the impacts of construction dust on air
quality. The 24-hour TSP levels shall be
measured by following the standard high volume sampling method as set out in
the Title 40 of the Code of Federal Regulations, Chapter 1 (Part 50), Appendix
B. Upon approval of the ER, 1-hour TSP
levels can be measured by direct reading methods which are capable of producing
comparable results as that measured by the high volume sampling method, to
indicate short event impacts.
5.1.5
All relevant data including
temperature, pressure, weather conditions, elapsed-time meter reading for the
start and stop of the sampler, identification and weight of the filter paper,
other local atmospheric factors affecting or affected by site conditions and
work progress of the concerned site etc. shall be recorded in detail. A sample data record sheet is shown in Appendix
D.
5.2
Monitoring
Equipment
5.2.1
High volume samplers (HVSs)
in compliance with the following specifications shall be used for carrying out
the 1-hour and 24-hour monitoring:
·
0.6 - 1.7 m3 per
minute (20 - 60 standard cubic feet per minute) adjustable flow range.
·
Equipped with a timing /
control device with +/- 5 minutes accuracy for 24 hours operation.
·
Installed with elapsed-time
meter with +/- 2 minutes accuracy for 24 hours operation.
·
Capable of providing a minimum
exposed area of 406 cm2.
·
Flow control accuracy: +/- 2.5%
deviation over 24-hour sampling period.
·
Equipped with a shelter to
protect the filter and sampler.
·
Incorporated with an electronic
mass flow rate controller or other equivalent devices.
·
Equipped with a flow recorder
for continuous monitoring.
·
Provided with a peaked roof
inlet.
·
Incorporated with a manometer.
·
Able to hold and seal the
filter paper to the sampler housing at horizontal position.
·
Easily changeable filter.
·
Capable of operating
continuously for a 24-hour period.
5.2.2
The ET shall be responsible
for the provision of the monitoring equipment. The ET shall ensure that a
sufficient number of HVSs with appropriate calibration kit are available for
carrying out the baseline, regular impact monitoring and ad-hoc
monitoring. The HVSs shall be equipped
with an electronic mass flow controller and be calibrated against a traceable
standard at regular intervals. All the
equipment, calibration kit, filter papers, etc. shall be clearly labelled.
5.2.3
Initial calibration of the
dust monitoring equipment shall be conducted upon installation and prior to
commissioning at bi-monthly intervals.
The transfer standard shall be traceable to the internationally
recognised primary standard and be calibrated annually. The calibration data shall be properly
documented for future reference by the concerned parties such as the IEC. All
the data shall be converted into standard temperature and pressure condition.
5.2.4
The flow-rate of the
sampler before and after the sampling exercise with the filter in position
shall be verified to be constant and be recorded on the data sheet as shown in Appendix D.
5.2.5
If the ET proposes to use a
direct reading dust meter to measure 1-hour TSP levels, he shall submit sufficient
information to the IEC to prove that the instrument is capable of achieving a
comparable result as that of the HVS before it may be used for the 1-hour
sampling. The instrument shall also be
calibrated regularly, and the 1-hour sampling shall be determined periodically
by HVS to check the validity and accuracy of the results measured by direct
reading method.
5.2.6
Wind data monitoring
equipment shall also be provided and set up at conspicuous locations for
logging wind speed and wind direction near to the dust monitoring
locations. The equipment installation
location shall be proposed by the ET and agreed with the ER in consultation
with the IEC. For installation and
operation of wind data monitoring equipment, the following points shall be
observed:
·
The wind sensors shall be
installed 10m above ground so that they are clear of obstructions or turbulence
caused by the buildings.
·
The wind data shall be captured
by a data logger and the data shall be downloaded for analysis at least once a
month.
·
The wind data monitoring
equipment shall be re-calibrated at least once every six months.
·
Wind direction should be
divided into 16 sectors of 22.5 degrees each.
5.2.7
In exceptional situations,
the ET may propose alternative methods to obtain representative wind data upon
approval from the ER and agreement from the IEC.
5.3
Laboratory
Measurement / Analysis
5.3.1
A clean laboratory with
constant temperature and humidity control, and equipped with necessary
measuring and conditioning instruments to handle the dust samples collected,
shall be available for sample analysis and equipment calibration and
maintenance. The laboratory should be
HOKLAS accredited or other internationally accredited laboratory.
5.3.2
If a site laboratory is set
up or a non-HOKLAS accredited laboratory is hired for carrying out the
laboratory analysis, the laboratory equipment shall be approved by the ER in
consultation with the IEC. Measurement performed by the laboratory shall be
demonstrated to the satisfaction of the ER and the IEC.
5.3.3
The IEC shall conduct
regular audit of the measurement performed by the laboratory so as to ensure
the accuracy of measurement results. The ET shall provide the ER with one copy
of the High Volume Method for Total Suspended Particulates, Chapter 1 (Part
50), Appendix B, of Title 40 of the Code of Federal Regulations for reference.
5.3.4
Filter paper of size
8"x10" shall be labelled before sampling. It shall be a clean filter
paper with no pinholes, and shall be conditioned in a humidity-controlled
chamber for over 24 hours and be pre-weighed before use for the sampling.
5.3.5
After sampling, the filter
paper loaded with dust shall be kept in a clean and tightly sealed plastic bag.
The filter paper shall then be returned to the laboratory for reconditioning in
the humidity-controlled chamber and accurate weighing by an electronic balance
with a readout down to 0.1mg. The balance shall be regularly calibrated against
a traceable standard.
5.3.6
All the collected samples
shall be kept in a good condition for 6 months before disposal.
5.4
Monitoring
Locations
5.4.1
Drawing no.
209506/EMA/AIR/001
and Table 5.1 indicate the locations of the
proposed dust monitoring stations. The
status and location of dust sensitive receivers may change after issuing this
Manual. In the event of such change, the
ET Leader shall propose updated monitoring locations and seek approval from ER
and agreement from the IEC.
Table
5.1
Construction Dust Monitoring Stations
|
ID
|
Location
|
|
AM1
|
Tung
Wah Group of Hospitals Aided Primary School & Secondary School
|
|
AM2
|
Lohas
Park Stage 2 (Planned Development in Area 86)
|
|
AM3
|
Lohas
Park Stage 3 (Planned Development in Area 86)
|
Note:
The monitoring stations can be
moved / relocated subject to the agreement with EPD/IEC if the development has
not yet been built during construction of CBL.
5.4.2
When alternative monitoring
locations are proposed, the following criteria, as far as practicable, shall be
followed:
·
The proposed site shall be at
the site boundary or such locations close to the major dust emission source.
·
The proposed site shall be
close to the air sensitive receivers.
·
The proposed site shall take
into account the prevailing meteorological conditions.
·
The monitoring equipment shall
have proper position/sitting and orientation.
5.4.3
The ET shall agree with the
ER on the position of the HVS for installation of the monitoring
equipment. When positioning the
samplers, the following points shall be noted:
·
A horizontal platform with
appropriate support to secure the samplers against gusty wind should be
provided.
·
No two samplers should be
placed less than 2 meters apart
·
The distance between the
sampler and an obstacle, such as buildings, must be at least twice the height
that the obstacle protrudes above the sampler.
·
A minimum of 2 meters of
separation from walls, parapets and penthouses is required for rooftop
samplers.
·
A minimum of 2 meters
separation from any supporting structure, measured horizontally is required.
·
No furnace or incinerator flue
is nearby.
·
Airflow around the sampler is
unrestricted.
·
The sampler is more than 20
meters from the drip line.
·
Any wire fence and gate, to
protect the sampler, should not cause any obstruction during monitoring.
·
Permission must be obtained to
set up the samplers and to obtain access to the monitoring stations.
·
A secured supply of electricity
is needed to operate the samplers.
5.5
Baseline
Monitoring for Fugitive Dust
5.5.1
Baseline monitoring shall
be carried out to determine the ambient 1-hour and 24‑hour TSP levels at
the monitoring locations prior to the commencement of the Project works. During the baseline monitoring, there shall
not be any construction or dust generating activities in the vicinity of the
monitoring stations. The baseline
monitoring shall provide data for the determination of the appropriate Action
levels with the Limit levels set against statutory or otherwise agreed limits.
5.5.2
Before commencing the
baseline monitoring, the ET shall inform the IEC of the baseline monitoring
programme such that the IEC can conduct on-site audit to ensure the accuracy of
the baseline monitoring results.
5.5.3
Baseline monitoring shall
be carried out at all of the designated monitoring locations for at least 14
consecutive days prior to the commissioning of the construction works to obtain
daily 24-hour TSP samples. The 1-hour
sampling shall also be undertaken at least 3 times per day while the highest
dust impact is expected.
5.5.4
In case the baseline
monitoring cannot be carried out at the designated monitoring locations during
the baseline monitoring period, the ET Leader shall carry out the monitoring at
alternative locations which can effectively represent the baseline conditions
at the impact monitoring locations. The
alternative baseline monitoring location shall be approved by the ER and agreed
with the IEC.
5.5.5
In exceptional cases, when
insufficient baseline monitoring data or questionable results are obtained, the
ET shall liaise with the IEC and EPD to agree on an appropriate set of data to
be used as a baseline reference and submit to the ER for approval.
5.5.6
Baseline checking of
ambient TSP levels shall be carried out every three months at each monitoring
location when no dusty works activities are in operation. If the ET considers that significant change
in the ambient conditions has taken place, a repeat of the baseline monitoring
may be carried out to update the baseline levels. The revised baseline levels
and, in turn, the air quality criteria shall be agreed with the IEC and EPD.
5.6
Impact
Monitoring
5.6.1
The ET shall carry out
impact monitoring during the construction phase of the Project. For regular impact monitoring, a sampling
frequency of at least once in every six-days shall be strictly observed at all
of the monitoring stations for 24-hour TSP monitoring. For 1-hour TSP monitoring, the sampling
frequency of at least three times in every six days shall be undertaken when
the highest dust impact occurs.
5.6.2
Before commencing the
impact monitoring, the ET shall inform the IEC of the impact monitoring
programme such that the IEC can conduct on-site audit to ensure the accuracy of
the impact monitoring results.
5.6.3
The specific time to start
and stop the 24-hour TSP monitoring shall be clearly defined for each location
and be strictly followed by the field operator.
5.6.4
In the case of
non-compliance with the air quality criteria, more frequent monitoring, as specified
in the Action Plan in Section 5.7, shall be conducted within the 24
hours of the non-compliant result being obtained. This additional monitoring shall be continued
until the excessive dust emission or the deterioration in air quality is
rectified.
5.7
Event
and Action Plan
5.7.1
The baseline monitoring
results shall form the basis for determining the air quality criteria for the
impact monitoring. The ET shall compare
the impact monitoring results with air quality criteria set up for 24-hour TSP
and 1-hour TSP. Table 5.2 shows the air quality criteria, namely Action and Limit
levels to be used.
Table
5.2 Action / Limit Levels for Air
Quality (Dust)
|
Parameter
|
Action Level
|
Limit Level
|
|
TSP
(24 hour
average)
|
BL £ 200 μg/m3, AL = (BL * 1.3 + LL)/2;
BL > 200 μg/m3,AL = LL
|
260 μg/m3
|
|
TSP
(1 hour average)
|
BL £ 384 μg/m3, AL = (BL * 1.3 + LL)/2;
BL > 384 μg/m3,
AL = LL
|
500 μg/m3
|
Note:
BL=Baseline Level; AL=Action
Level; LL=Limit Level
5.7.2
Should non-compliance of
the air quality criteria occur, actions in accordance with the Action Plan in Table
5.3 shall be carried out.
Table 5.3
Event / Action Plan for Air Quality (Dust)
|
EVENT
|
ACTION
|
|
ET
|
IEC
|
ER
|
CONTRACTOR
|
|
ACTION LEVEL
|
|
Exceedance for one sample
|
1. Identify source, investigate
the causes of exceedance and propose remedial measures;
2. Inform IEC and ER;
3. Repeat measurement to
confirm finding;
4. Increase monitoring
frequency to daily.
|
1. Check monitoring data
submitted by ET;
2. Check Contractor’s working
method.
|
1. Notify Contractor.
|
1. Rectify any unacceptable
practice;
2. Amend working methods if
appropriate.
|
|
Exceedance for two or more
consecutive samples
|
1. Identify source;
2. Inform IEC and ER;
3. Advise the ER on the
effectiveness of the proposed remedial measures;
4. Repeat measurements to confirm
findings;
5. Increase monitoring
frequency to daily;
6. Discuss with IEC and
Contractor on remedial actions required;
7. If exceedance continues,
arrange meeting with IEC and ER;
8. If exceedance stops, cease
additional monitoring.
|
1. Check monitoring data
submitted by ET;
2. Check Contractor’s working
method;
3. Discuss with ET and
Contractor on possible remedial measures;
4. Advise the ET on the
effectiveness of the proposed remedial measures;
5. Supervise Implementation of
remedial measures.
|
1. Confirm receipt of
notification of exceedance in writing;
2. Notify Contractor;
3. Ensure remedial measures
properly implemented.
|
1. Submit proposals for
remedial actions to IEC within 3 working days of notification;
2. Implement the agreed proposals;
3. Amend proposal if
appropriate.
|
|
LIMIT LEVEL
|
|
Exceedance for one sample
|
1. Identify source, investigate
the causes of exceedance and propose remedial measures;
2. Inform ER, Contractor, IEC
and EPD;
3. Repeat measurement to
confirm finding;
4. Increase monitoring
frequency to daily;
5. Assess effectiveness of
Contractor’s remedial actions and keep IEC, EPD and ER informed of the
results.
|
1. Check monitoring data
submitted by ET;
2. Check Contractor’s working
method;
3. Discuss with ET and Contractor
on possible remedial measures;
4. Advise the ER on the
effectiveness of the proposed remedial measures;
5. Supervise implementation of
remedial measures.
|
1. Confirm receipt of
notification of failure in writing;
2. Notify Contractor;
3. Ensure remedial measures
properly implemented.
|
1. Take immediate action to
avoid further exceedance;
2. Submit proposals for
remedial actions to IEC within 3 working days of notification;
Implement the agreed proposals;
4. Amend proposal if
appropriate.
|
|
Exceedance for two or more
consecutive samples
|
1. Notify IEC, ER, Contractor
and EPD;
2. Identify source;
3. Repeat measurement to
confirm findings;
4. Increase monitoring
frequency to daily;
5. Carry out analysis of
Contractor’s working procedures to determine possible mitigation to be
implemented;
6. Arrange meeting with IEC and
ER to discuss the remedial actions to be taken;
7. Assess effectiveness of
Contractor’s remedial actions and keep IEC, EPD and ER informed of the
results;
8. If exceedance stops, cease
additional monitoring.
|
1. Discuss amongst ER,
ET, and Contractor on the potential remedial actions;
2. Review Contractor’s remedial
actions whenever necessary to assure their effectiveness and advise the ER
accordingly;
3. Supervise the implementation
of remedial measures.
|
1. Confirm receipt of
notification of exceedance in writing;
2. Notify Contractor;
3. In consultation with
the IEC, agree with the Contractor on the remedial measures to be
implemented;
4. Ensure remedial
measures properly implemented;
5. If exceedance
continues, consider what portion of the work is responsible and instruct the
Contractor to stop that portion of work until the exceedance is abated.
|
1. Take immediate action to
avoid further exceedance;
2. Submit proposals for
remedial actions to IEC within 3 working days of notification;
3. Implement the agreed
proposals;
4. Resubmit proposals if
problem still not under control;
5. Stop the relevant portion of
works as determined by the ER until the exceedance is abated.
|
5.8
Mitigation
Measures
5.8.1
The EIA Report recommended
dust control measures including 8 times of watering per day. During the operation of the barging
facilities, good site practices such as road surface paving, dust enclosures
and vehicle wheel wash facilities would be implemented to reduce the generation
of dust.
5.8.2
All the proposed mitigation
measures are summarised in the Environmental Mitigation Implementation Schedule
(EMIS) in Appendix B.
6.1
Noise
Quality Parameters
6.1.1
Construction Phase
6.1.1.1
The construction noise
level shall be measured in terms of the A-weighted equivalent continuous sound
pressure level (Leq). Leq
30 min shall be used as the monitoring parameter for the time period
between 0700 and 1900 hours on normal weekdays.
For all other time periods, Leq 5 min shall be employed for
comparison with the Noise Control Ordinance (NCO) criteria.
6.1.1.2
Supplementary information
for data auditing, statistical results such as L10 and L90
shall also be obtained for reference. A
sample data record sheet is shown in Appendix D for reference.
6.1.2
Operational Phase
6.1.2.1
The traffic noise level
shall be measured twice within the first year of the road opening. Measurement shall be made in terms of
A-weighted L10 over three half-hour periods during the peak traffic
hour. Other metrics like Leq
may be added as seen fit. A sample data
record sheet is shown in Appendix D for reference.
6.2
Monitoring
Equipment
6.2.1
As referred to in the
Technical Memorandum (TM) issued under the NCO, sound level meters in
compliance with the International Electrotechnical Commission Publications 651:
1979 (Type 1) and 804: 1985 (Type 1) specifications shall be used for carrying
out the noise monitoring. Immediately
prior to and following each noise measurement, the accuracy of the sound level
meter shall be checked using an acoustic calibrator generating a known sound
pressure level at a known frequency.
Measurements may be accepted as valid only when the calibration level
from before and after the noise measurement agrees to within 1.0 dB.
6.2.2
Noise measurements shall
not be made in fog, rain or, wind with a steady speed exceeding 5ms-1,
or wind with gusts exceeding 10ms-1.
The wind speed shall be checked with a portable wind speed meter capable
of measuring the wind speed in m s-1.
6.2.3
The ET shall be responsible
for the provision of the monitoring equipment.
The ET shall ensure sufficient noise measuring equipment and associated
instrumentation are available for carrying out the baseline monitoring, regular
impact monitoring and ad hoc monitoring.
All the equipment and associated instrumentation shall be clearly
labelled. The
equipment installation location shall be proposed by the ET Leader and agreed
with the ER and EPD in consultation with the IEC.
6.3
Monitoring
Locations
6.3.1
Construction Phase
6.3.1.1
Drawing no. 209506/EMA/NS/001 shows the
noise monitoring locations for the construction phase. The proposed noise monitoring locations are
summarised in Table 6.1 below.
Table
6.1 Proposed Airborne Construction
Noise Monitoring Stations
|
Monitoring Station ID
|
NSR ID in EIA
|
Description
|
|
CNMS-1
|
R6
|
Lohas Park Stage 1(Planned Development in Area
86, Package 5) (Southeast facade)
|
|
CNMS-2
|
R14
|
Lohas Park Stage 1 (Planned Development in Area
86, Package 6) (Southeast facade)
|
|
CNMS-3
|
R27
|
Lohas Park Stage 3 (Planned Development in Area
86,Package 11) (West facade)
|
|
CNMS-4
|
R33
|
Tung Wah Group of Hospitals Aided Primary School
& Secondary School (Southwest facade)
|
Note:
The monitoring station will be removed/relocated
if the NSR does not exist during the construction of CBL; subject to agreement
with EPD/IEC.
6.3.1.2
The status and locations of
noise sensitive receivers may change after issuing this Manual. In the event of such change, the ET shall
propose updated monitoring locations and seek approval from the ER and IEC and
agreement of the proposal from EPD.
6.3.1.3
When alternative monitoring
locations are proposed, the monitoring locations shall be chosen based on the
following criteria:
·
Situated at locations close to
the major site activities which are likely to have noise impacts.
·
Situated close to the most
affected existing noise sensitive receivers.
·
For monitoring locations
located in the vicinity of the sensitive receivers, care should be taken to
cause minimal disturbance to the occupants during monitoring.
6.3.1.4
In case the baseline
monitoring cannot be carried out at the designated monitoring locations, the ET
shall propose and carry out the monitoring at alternative locations that can
effectively represent the baseline conditions at the impact monitoring
locations. The alternative baseline monitoring locations shall be approved by
the ER and agreed with the IEC.
6.3.1.5
The construction noise
monitoring station shall normally be at a point 1m from the exterior of the sensitive
receiver building façade and be a position 1.2m above the local ground. If there is a problem with access to the
normal monitoring position, an alternative position shall be chosen, and an
appropriate correction to the measurements shall be made. For reference, a correction of +3dB(A) shall
be made to the free field measurements.
The ET shall agree with the ER and IEC on the monitoring position and
the corrections adopted. Once the
positions for the monitoring stations are chosen, the baseline monitoring and
the impact monitoring shall be carried out at the same positions.
6.3.2
Operational Phase
6.3.2.1
Traffic Noise
The traffic noise
monitoring stations are shown in Drawing no. 209509/EMA/NS/002 and are
summarised in Table 6.2.
The monitoring locations
shall be selected according to the following criteria:
·
One high floor and one medium
floor monitoring points shall be chosen at each location as far as possible
·
Selected monitoring locations
shall enable monitoring to be carried out
twice within one year after implementation of the mitigation measures
during operation of the proposed road.
Table
6.2 Proposed Traffic Noise Monitoring
Stations
|
Monitoring
Station ID
|
NSR ID in EIA
|
Description
|
|
ONMS-1
|
R2
|
Lohas
Park, Le Prestige, Tower 1 (South facade)
|
|
ONMS-2
|
R12
|
Lohas Park Stage 1(Planned Development in
Area 86, Package 5) (Southeast facade)
|
|
ONMS-3
|
R25
|
Lohas Park
Stage 3
(Planned Development in Area 86, Package 11) (Southeast facade)
|
Note:
The monitoring station will be
removed / relocated if the NSR does not exist during the construction of CBL.
The status and location of
the noise sensitive receivers may change after issuing this Manual. In the event of such change, the ET shall propose updated monitoring
locations and seek approval from the ER and IEC and agreement of the proposal
from EPD.
When alternative monitoring
locations are proposed, the monitoring locations shall be chosen based on the
following criteria:
·
Alternative locations shall be
similarly exposed to potential noise impacts.
·
Alternative locations shall be
close to the noise sensitive receivers.
·
Alternative locations shall be
located so as to cause minimum disturbance to the occupants.
The
traffic noise monitoring shall be carried out at a distance of 1m from the
openable window and 1.2m above the floor level of the noise sensitive receivers
identified. The ET shall agree with the
IEC on any necessary corrections adopted.
6.4
Baseline
Monitoring
6.4.1
Construction Phase
6.4.1.1
The ET shall carry out
baseline noise monitoring prior to the commencement of the construction
works. There shall not be any
construction activities in the vicinity of the stations during the baseline
monitoring. Continuous baseline noise
monitoring of the A-weighted levels Leq, L10 and L90
shall be carried out daily for a period of at least two weeks, with a sampling
period of 30 minutes between 0700 and 1900 hrs and 15 minutes (as three
consecutive Leq,(5 minutes) readings) for evening time (between 1900
and 2300 hours on normal weekdays), general holidays including Sundays (between
0700 and 2300 hours) and night-time (between 2300 and 0700 on all days).
6.4.1.2
Before commencing the
baseline monitoring, the ET shall inform the IEC of the baseline monitoring programme
such that, if required, the IEC can conduct on-site audit to ensure accuracy of
the baseline monitoring results.
6.4.1.3
In exceptional cases, when
insufficient baseline monitoring data or questionable results are obtained, the
ET leader shall liaise with EPD and, in consultation with the ER and IEC, agree
on an appropriate set of data to be used as a baseline reference.
6.4.2
Operational Phase
6.4.2.1
No baseline operational
noise monitoring is required.
6.5
Impact
Monitoring
6.5.1
Construction Phase
6.5.1.1
Noise monitoring shall be
carried out at all the designated monitoring stations. The monitoring frequency shall depend on the
scale of the construction activities.
The following is an initial guide on the regular monitoring frequency
for each station on a per week basis when noise generating activities are
underway:
·
One set of measurements between
0700 and 1900 hours on normal weekdays.
6.5.1.2
If construction works are
extended to include works during the hours of 1900 - 0700, additional weekly
impact monitoring shall be carried out during evening and night-time
works. Applicable permits under the NCO
shall be obtained by the Contractor.
6.5.1.3
For construction monitoring
stations at schools, noise monitoring shall be carried out during the school
examination periods. The ET shall liaise with the school’s personnel to
ascertain the exact dates and times of all examination periods during the
course of the contract.
6.5.1.4
In the case of a
non-compliance with the construction noise criteria, more frequent monitoring,
as specified in the Action Plan in Table
6.4, shall be carried out. This
additional monitoring shall be continued until the recorded noise levels are
rectified or proved to be irrelevant to the construction activities.
6.5.2
Operational Phase
6.5.2.1
Traffic noise monitoring
shall be carried out at all the designated traffic noise monitoring
stations. The following is an initial
guide on the traffic noise monitoring requirements during the operational
phase:
·
One set of measurements at the
morning traffic peak hour on normal weekdays.
·
One set of measurement at the
evening traffic peak hour on normal weekdays.
·
A concurrent census of traffic
flow and percentage heavy vehicles shall be conducted for the far-side and
near-side of the road and the existing road network in the vicinity of each
measurement points.
·
Average vehicle speed estimated
for far-side and near-side of the road and the existing road network in the
vicinity of each measuring points.
·
The two sets of monitoring data
shall be obtained within the first year of operation.
6.5.2.2
Measured noise levels shall
be compared with the predicted noise levels by applying appropriate conversion
corrections to allow for the traffic conditions at the time of
measurement. Appendix D shows a sample data record sheet for traffic noise
monitoring.
6.6
Event
and Action Plan
6.6.1
Construction Phase
6.6.1.1
The Action and Limit levels
for construction noise are defined in Table
6.3. Should non-compliance of the
criteria occur, action in accordance with the Action Plan in Table 6.4 shall be carried out.
Table
6.3 Action and Limit Levels for
Construction Noise
|
Time Period
|
Action Level
|
Limit Level
|
|
0700 -
1900 hours on normal weekdays
|
When one documented complaint
is received
|
75 dB(A) *
|
Notes:
If
works are to be carried out during restricted hours, the conditions stipulated
in the construction noise permit issued by the Noise Control Authority have to
be followed.
*
Reduce to 70 dB(A) for schools and 65 dB(A) during school examination
periods.
6.6.1.2
To account for cases in
which ambient noise levels, as identified by baseline monitoring, approach or
exceed the stipulated Limit Levels prior to the commencement of construction, a
Maximum Acceptable Impact Level, which incorporates the baseline noise levels
and the identified construction noise Limit Level, may be defined and agreed
with the EPD. The amended level will be greater than 75 dB(A) and will
represent the maximum acceptable noise level at a specific monitoring station.
Correction factors for the effects of acoustic screening and/or architectural
features of NSRs may also be applied as specified in the Technical Memorandum
on Noise from Construction Work other than Percussive Piling (GW-TM).
Table 6.4 Event / Action Plan for Construction Noise
|
EVENT
|
ACTION
|
|
ET
|
IEC
|
ER
|
CONTRACTOR
|
|
Action Level
|
1. Notify IEC and
contractor;
2. Carry out investigation;
3. Report the results of investigation to the IEC, ER and
Contractor;
4. Discuss with the Contractor and formulate remedial measures;
5. Increase monitoring
frequency to check mitigation effectiveness.
|
1. Review the analysed results submitted by the ET;
2. Review the proposed remedial measures by the Contractor and
advise the ER accordingly;
3. Supervise the implementation of remedial measures.
|
1.
Confirm receipt of notification of exceedance in writing;
2. Notify Contractor;
3.
Require Contractor to propose remedial measures for the analysed noise
problem;
4.
Ensure remedial measures are properly implemented
|
1.
Submit noise mitigation proposals to IEC;
2.
Implement noise mitigation proposals.
|
|
Limit Level
|
1.
Identify source;
2.
Inform IEC, ER, EPD and Contractor;
3.
Repeat measurements to confirm findings;
4.
Increase monitoring frequency;
5. Carry out analysis of
Contractor’s working procedures to determine possible mitigation to be
implemented;
6.
Inform IEC, ER and EPD the causes and actions taken for the exceedances;
7.
Assess effectiveness of Contractor’s remedial actions and keep IEC, EPD and
ER informed of the results;
8. If
exceedance stops, cease additional monitoring.
|
1.
Discuss amongst ER, ET, and Contractor on the potential remedial actions;
2.
Review Contractors remedial actions whenever necessary to assure their
effectiveness and advise the ER accordingly;
3.
Supervise the implementation of remedial measures.
|
1.
Confirm receipt of notification of exceedance in writing;
2. Notify Contractor;
3.
Require Contractor to propose remedial measures for the analysed noise
problem;
4.
Ensure remedial measures properly implemented;
5. If
exceedance continues, consider what portion of the work is responsible and
instruct the Contractor to stop that portion of work until the exceedance is
abated.
|
1. Take
immediate action to avoid further exceedance;
2.
Submit proposals for remedial actions to IEC
within 3 working days of notification;
3.
Implement the agreed proposals;
4.
Resubmit proposals if problem still not under control;
5. Stop
the relevant portion of works as determined by the ER until the exceedance is
abated.
|
6.6.2
Operational
Phase
6.6.2.1
For road traffic noise, the
measured/monitored noise levels shall be compared with the predicted results
and the predicted traffic flow conditions (calculated noise levels based on
concurrent traffic census obtained). In
the case that discrepancies are observed, an explanation shall be given to
justify the discrepancies.
6.7
Mitigation
Measures
6.7.1
Construction
Phase
6.7.1.1
The EIA Report recommended
construction noise control measures including the use of quiet plant and
temporary noise barriers. All the
proposed mitigation measures are summarised in the EMIS in Appendix B.
6.7.2
Operational
Phase
6.7.2.1
A series of noise barriers
and semi-enclosures are required along road D9 to mitigate road traffic noise
impacts. These mitigation measures include the following and are shown in Drawing no. 209506/EMA/NS/003.
7.1
Water
Quality Parameters
7.1.1
Construction water quality
impact includes cumulative effects of CBL and TKO-LT Tunnel. Mitigation measures have been recommended by
the EIA to ensure compliance with the relevant legislative requirements.
7.1.2
As identified in the EIA
Report, key water quality issues during construction phase will be pile
excavation works for the bridge pier foundations. Marine water quality
monitoring shall be carried out during the construction phase to ensure that
any unacceptable increase in suspended solids (SS) / turbidity and decrease in
dissolved oxygen (DO) due to pile excavation works could be readily detected
and timely action be taken to rectify the situation.
7.1.3
The monitoring parameters
include SS, DO, turbidity and other general water quality parameters such as
pH, salinity, temperature and water depth.
7.2
Monitoring
Equipment and Field Log
7.2.1
Dissolved Oxygen and
Temperature Measuring Equipment
7.2.1.1
The instrument shall be a
portable and weatherproof DO measuring instrument complete with cable and
sensor and DC power source. The
equipment shall be capable of measuring the following:
·
A DO level in the range of 0 -
20 mg/ L and 0 - 200% saturation.
·
A temperature of 0 - 45 degree
Celsius.
7.2.1.2
It shall have a membrane
electrode with automatic temperature compensation complete with a cable. Sufficient stocks of spare electrodes and
cables shall be made available for replacement where necessary. (For example,
YSI model 59 meter, YSI 5739 probe, YSI 5795A submersible stirrer with reel and
cable or an approved similar instrument).
7.2.1.3
Should salinity
compensation not be built-in to the DO equipment, in-situ salinity shall be measured to calibrate the DO equipment
prior to each DO measurement.
7.2.2
Turbidity Measurement
Instrument
7.2.2.1
Turbidity shall be measured
in situ by the nephelometric method. The instrument shall be portable
and weatherproof using a DC power source complete with cable, sensor and
comprehensive operation manuals. It
shall have a photoelectric sensor capable of measuring turbidity between 0 - 1000
NTU (for example, Hach model 2100P or an approved similar instrument). The
cable should not be less than 25m in length. The meter shall be calibrated in
order to establish the relationship between NTU units and the levels of
suspended solids. The turbidity
measurement shall be carried out on split water sample collected from the same
depths of suspended solids samples.
7.2.3
Sampler
7.2.3.1
A water sampler is
required. It shall comprise a
transparent PVC cylinder, with a capacity of not less than 2 litres, which can
be effectively sealed with latex cups at both ends. The sampler shall have a positive latching
system to keep it open and prevent premature closure until released by a
messenger when the sampler is at the selected water depth (for example,
Kahlsico Water Sampler or an approved similar instrument).
7.2.4
Water Depth Detector
7.2.4.1
A portable,
battery-operated echo sounder shall be used for the determination of water
depth at each designated monitoring station.
This unit can either be hand held or affixed to the bottom of the work
boat, if the same vessel is to be used throughout the monitoring programme.
7.2.5
Salinity
7.2.5.1
A portable salinometer
capable of measuring salinity in the range of 0 - 40 parts per thousand (ppt)
shall be provided for measuring salinity of the water at each monitoring
location.
7.2.6
Sample Containers and Storage
7.2.6.1
Water samples for SS
determinations shall be stored in suitable containers with no preservative
added, packed in ice (cooled to 4°C without being frozen) and delivered to the
laboratory and analysed as soon as possible after collection. Sufficient volume of samples shall be
collected to achieve the detection limit.
7.2.7
Monitoring Position Equipment
7.2.7.1
A hand-held or boat-fixed
type digital Differential Global Positioning System (DGPS) with way point
bearing indication or other equipment of similar accuracy, shall be provided
and used during the water quality monitoring to ensure the monitoring vessel is
at the correct location before taking measurements. DGPS or the equivalent equipment, calibrated at
appropriate checkpoint (e.g. Quarry Bay Survey Nail at Easting 840683.49,
Northing 816709.55) shall be provided and used to ensure the monitoring station
is at the correct position before taking measurement and water samples.
7.2.8
Calibration and Backup In-Situ
Instruments
7.2.8.1
The pH meter, DO meter and turbidimeter
shall be checked and calibrated before use. DO meter and turbidimeter shall be
certified by a laboratory accredited under HOKLAS or any other international
accreditation scheme, and subsequently re-calibrated at 3 monthly intervals
throughout all stages of the water quality monitoring. Responses of sensors and
electrodes shall be checked with certified standard solutions before each use.
Wet bulb calibration for a DO meter shall be carried out before measurement at
each monitoring location.
7.2.8.2
Sufficient stocks of spare
parts shall be maintained for replacements when necessary. Backup monitoring equipment shall also be
made available so that monitoring can proceed uninterrupted even when some
equipment is under maintenance, calibration, etc. For the on-site calibration
of field equipment, the BS127:1993, “Guide to Field and on-site test methods
for the analysis of waters” shall be observed.
7.2.8.3
The Water Quality
Monitoring will involve a large number of monitoring stations and measurements
shall be conducted within the prescribed tidal conditions (within ± 1.75 hour
of the predicted mid-ebb or mid-flood tides) in order to ensure the
measurement/samples are representative. A multi-probe monitoring equipment set
integrated with water sampler(s) is highly recommended to improve the
monitoring efficiency. It is also likely that more than one field survey vessel
will be required simultaneously to ensure the monitoring are conducted within
the acceptable monitoring windows. The ET shall also consider the use of
unattended automatic sampling/monitoring devices at fixed stations where
monitoring is required throughout the construction period. The use of such
unattended automatic devices, however, shall be subject to the approval of the
ER, IEC and EPD.
7.2.9
Field Log
7.2.9.1
Other relevant data should
also be recorded, including monitoring the location / position, time, water
depth, salinity, temperature, tidal stages, weather conditions and any special
phenomena or work underway nearby.
7.2.9.2
A sample data record sheet
is shown in Appendix D for reference.
7.3
Laboratory Measurement /
Analysis
7.3.1
Analysis of SS levels
should be carried out in a HOKLAS or other international accredited
laboratory. Sufficient water samples of
not less than 2 litres shall be collected at the monitoring stations for
carrying out the laboratory SS determinations. American Public Health
Association (APHA) Standard Methods 2540-D, or equivalent, shall be used and
the reporting limit should be less than or equal to 1 mg/L.
7.3.2
Detailed testing methods,
pre-treatment procedures, instrument use, Quality Assurance/Quality Control
(QA/QC) details (such as blank, spike recovery, number of duplicate samples per
batch, etc.), detection limits and accuracy shall be submitted to EPD for
approval prior to the commencement of monitoring programme. EPD may also
request the laboratory to carry out analysis of known standards provided by EPD
for quality assurance. The testing methods and related proposal shall be
checked and certified by the IEC before submission to EPD for approval.
7.3.3
Additional duplicate
samples may be required by EPD for inter laboratory calibration. Remaining
samples after analysis shall be kept by the laboratory for 3 months in case
repeat analysis is required. If in-house or non-standard methods are proposed,
details of the method verification may also be required to submit to EPD. In
any circumstance, the sample testing shall have comprehensive quality assurance
and quality control programmes. The laboratory shall be prepared to demonstrate the programmes to
EPD or its representative when requested.
7.4
Monitoring Locations
7.4.1
Monitoring shall be carried
out at CC1, CC2, CC3,
CC4, CC13,
SWI1, C1, C2, C3 and C4. The 6 stations (CC1, CC2, CC3, CC4, CC13, SWI1) represent sensitive receivers
potentially affected by the Project during the proposed pile excavation and
bridge pier foundation construction works.
Stations C1 to C4 will serve as control stations and Station I1 will
serve as a gradient station between LTT and CBL. Monitoring stations are shown
in Drawing no. 209506/EMA/WQ/001 and
Table 7.1.
Table 7.1 Water Quality Monitoring Stations for
Baseline and Construction Phase Monitoring
|
Station
|
Description
|
Easting
|
Northing
|
|
CC1
|
Coral Sites at Chiu Keng Wan
|
843201
|
816416
|
|
CC2
|
Coral Sites at
Junk Bay
|
844076
|
817091
|
|
CC3
|
Coral Sites at Junk Island
|
844606
|
817941
|
|
CC4
|
Coral Sites at
Fat Tong Chau West
|
845444
|
815595
|
|
CC13
|
Coral Sites at Junk Bay near Chiu Keng
Wan
|
844200
|
817495
|
|
SWI1
|
Tseung Kwan O Salt Water Intake
|
845512
|
817442
|
|
C3
|
Control Station-within Junk Bay
|
843821
|
816211
|
|
C4
|
Control Station-within Junk Bay
|
844621
|
815770
|
|
I1
|
Between LTT and CBL
|
844602
|
817675
|
7.5
Baseline Monitoring
7.5.1
Baseline conditions for
marine water quality shall be established and agreed with EPD prior to the
commencement of works. The purpose of the baseline monitoring is to establish
ambient conditions prior to the commencement of the works and to demonstrate the
suitability of the proposed impact and control monitoring stations. The
baseline conditions shall normally be established by measuring the DO,
temperature, turbidity, pH, salinity and SS at all designated locations. The
measurements shall be taken at all designated monitoring stations including
control stations, 3 days per week, at mid-flood (within ± 1.75 hour of the
predicted time) and mid-ebb (within ± 1.75 hour of the predicted time) tides,
for at least 4 weeks prior to the commencement of marine works. Replicate
in-situ measurements and samples collected from each independent sampling event
shall be collected to ensure a robust statistically interpretable database.
7.5.2
The monitoring exercise
shall be scheduled as far as possible to avoid any dredging / backfilling
activities from other projects around the monitoring stations such that
representative ambient data could be sampled.
7.5.3
Other relevant data shall
also be recorded, such as monitoring location/ position, time, water depth,
tidal stages, weather conditions and any special phenomena underway near the
monitoring station. There shall not be any marine construction activities in
the vicinity of the stations during the baseline monitoring.
7.5.4
The proposed baseline
monitoring schedule shall be faxed to EPD 2 weeks prior to the commencement of
baseline monitoring. The interval between two sets of monitoring shall not be
less than 36 hours.
7.6
Impact Monitoring
7.6.1
During the CBL piling and
pile excavation works (marine construction activity), monitoring shall be undertaken
three days per week, at mid-flood (within ± 1.75 hour of the predicted time)
and mid-ebb (within ± 1.75 hour of the predicted time) tides, with
sampling/measurement at the designated monitoring stations and the control
stations. The interval between two sets
of monitoring shall not be less than 36 hours except where there are
exceedances of Action and/or Limit levels, in which case the monitoring
frequency will be increased.
7.6.2
All measurements shall be
taken at three water depths, namely 1 m below water surface, mid-depth and 1 m
above seabed, except where the water depth is less than 6 m, in which case the
mid-depth station may be omitted. Should
the water depth be less than 3 m, only the mid-depth station will be
monitored. If the impact monitoring data
collected at the sensitive receivers indicate that the Action or Limit levels
are in exceedance (as shown in Table 7.2), assessment
shall be conducted to compare the impact monitoring data with those collected
at the gradient stations and the control stations as appropriate and to
identify whether the exceedance is caused by CBL marine construction
activity. If the result of the data
analysis indicates that the exceedance is caused by CBL marine construction activity,
appropriate actions including lowering the working rate, or rescheduling of
works should be taken and additional mitigation measures shall be implemented
as necessary.
Table
7.2 Action and Limit Levels for Water Quality
|
Parameters
|
Action
|
Limit
|
|
DO in mg L-1
(Surface,
Middle & Bottom)
|
CC1,
CC2, CC3, CC4, CC13 and SWI1
Surface and Middle
5 percentile of baseline data for surface
and middle layer
Bottom
5 percentile of baseline data for bottom
layer
|
CC1,
CC2, CC3, CC4, CC13 and SWI1
Surface and Middle
4 mg L-1 except 5 mg/l for FCZ
or
1%-ile of baseline data for surface and
middle layer
Bottom
2 mg L-1 or
1%-ile of baseline data for bottom layer
|
|
SS
in mg L-1 (Surface, Middle,
Bottom,
depth-averaged)
|
CC1,
CC2, CC3, CC4, CC13 and SWI1
Surface, Middle & Bottom
95 percentile of baseline data or 120% of
upstream control station's SS at the same tide of the same day
SWI1 only
Depth averaged
8mg/L
|
CC1,
CC2, CC3, CC4, CC13 and SWI1
Surface, Middle & Bottom
99 percentile of baseline or 130% or
upstream control station's SS at the same tide of the same day
SWI only
Depth averaged
10mg/L
|
|
Turbidity
in NTU
(depth-averaged)
|
CC1,
CC2, CC3, CC4, CC13 and SWI1
95
percentile of baseline data or 120% of upstream control station's Turbidity
at the same tide of the same day
|
CC1,
CC2, CC3, CC4, CC13 and SWI1
99
percentile of baseline or 130% of upstream control station's Turbidity at the
same tide of the same day
|
Notes:
"depth-averaged"
is calculated by taking the arithmetic means of reading at all three depths.
For
DO, non-compliance of the water quality limits occurs when monitoring result is
lower than the limits.
For
turbidity and SS, non-compliance of the water quality limits occurs when
monitoring result is higher than the limits.
All
the figures given in the table are used for reference only and EPD may amend
the figures whenever it is considered as necessary.
7.6.3
For cumulative impact, the
ET shall keep coordination with the project team of LTT and Offshore Windfarm.
The ET shall also review the locations of Station I1 (gradient station) to identify
the source of plumes and the review results shall be verified by the IEC.
7.7
Operational Phase Monitoring
7.7.1
There will be no major
impact during the operational phase and water quality monitoring is not
required.
7.8
Event and Action Plan
7.8.1
The water quality
assessment criteria, namely Action and Limit levels, are shown in Table 7.2. Should the monitoring
results of the water quality parameters at any designated monitoring stations
indicate that the water quality assessment criteria are exceeded, the actions
in accordance with the Action Plan in Table 7.3 shall apply.
Table 7.3 Event and Action Plan for Water Quality
|
EVENT
|
ACTION
|
|
ET Leader
|
IEC
|
ER
|
Contractor
|
|
Action level being exceeded by
one sampling day at water sensitive receiver(s)
|
1. Identify the source(s) of
impact by comparing the results with those collected at the gradient stations
and the control stations as appropriate;
2. If exceedance is found to be
caused by the marine works, repeat in-situ
measurement to confirm findings;
3. Inform IEC and contractor;
4. Check monitoring data, all
plant, equipment and Contractor's working methods;
5. If exceedance occurs at WSD
salt water intake, inform WSD;
6. Discuss mitigation measures
with IEC and Contractor;
7. Repeat measurement on next
day of exceedance.
|
1. Discuss mitigation measures
with ET and Contractor;
2. Review proposal on
mitigation measures submitted by Contractor and advise the ER accordingly;
3. Assess the effectiveness of
the implemented mitigation measures.
|
1. Discuss proposed mitigation
measures with IEC;
2. Make agreement on the
mitigation proposal.
|
1. Inform the ER and confirm
notification of the non-compliance in writing;
2. Rectify unacceptable
practice;
3. Check all plant and
equipment;
4. Amend working methods if
appropriate;
5. Discuss with ET and IEC and
propose mitigation measures to IEC and ER;
6. Implement the agree
mitigation measures.
|
|
Action level being exceeded by
two or more consecutive sampling days
at water sensitive receiver(s)
|
1. Identify the source(s) of
impact by comparing the results with those collected at the gradient stations
and the control stations as appropriate;
2. If exceedance is found to be
caused by the marine works, repeat in-situ measurement to confirm
findings;
3. Inform IEC and contractor;
4. Check monitoring data, all
plant, equipment and Contractor's working methods;
5. Discuss mitigation measures
with IEC, and Contractor;
6. Ensure mitigation measures
are implemented;
7. Prepare to increase the monitoring
frequency to daily;
8. If exceedance occurs at WSD
salt water intake, inform WSD;
9. Repeat measurement on next
day of exceedance.
|
1. Discuss mitigation measures
with ET and Contractor;
2. Review proposal on
mitigation measures submitted by Contractor and advise the ER accordingly;
3. Assess the effectiveness of
the implemented mitigation measures.
|
1. Discuss proposed mitigation
measures with IEC;
2. Make agreement on the
mitigation proposal;
3. Assess the effectiveness of
the implemented mitigation measures.
|
1. Inform the Engineer and
confirm notification of the non-compliance in writing;
2. Rectify unacceptable
practice;
3. Check all plant and
equipment and consider changes of working methods;
4. Discuss with ET, IEC and ER
and propose mitigation measures to IEC and ER within 3 working days;
5. Implement the agreed
mitigation measures.
|
|
Action level being exceeded by
two or more consecutive sampling days
at water sensitive receiver(s)
|
1. Identify the source(s) of
impact by comparing the results with those collected at the gradient stations
and the control stations as appropriate;
2. If exceedance is found to be
caused by the marine works, repeat in-situ measurement to confirm
findings;
3. Inform IEC and contractor;
4. Check monitoring data, all
plant, equipment and Contractor's working methods;
5. Discuss mitigation measures
with IEC, and Contractor;
6. Ensure mitigation measures
are implemented;
7. Prepare to increase the
monitoring frequency to daily;
8. If exceedance occurs at WSD
salt water intake, inform WSD;
9. Repeat measurement on next
day of exceedance.
|
1. Discuss mitigation measures
with ET and Contractor;
2. Review proposal on
mitigation measures submitted by Contractor and advise the ER accordingly;
3. Assess the effectiveness of
the implemented mitigation measures.
|
1. Discuss proposed mitigation
measures with IEC;
2. Make agreement on the
mitigation proposal;
3. Assess the effectiveness of
the implemented mitigation measures.
|
1. Inform the Engineer and
confirm notification of the non-compliance in writing;
2. Rectify unacceptable
practice;
3. Check all plant and
equipment and consider changes of working methods;
4. Discuss with ET, IEC and ER
and propose mitigation measures to IEC and ER within 3 working days;
5. Implement the agreed
mitigation measures.
|
|
Limit level being exceeded by
one sampling day at water sensitive receiver(s)
|
1. Identify the source(s) of
impact by comparing the results with those collected at the gradient stations
and the control stations as appropriate;
2. If exceedance is found to be
caused by the marine works, repeat in-situ measurement to confirm
findings;
3. Inform IEC, contractor and
EPD
4. Check monitoring data, all
plant, equipment and Contractor's working methods;
5. Discuss mitigation measures
with IEC, ER and Contractor;
6. Ensure mitigation measures
are implemented;
7. If exceedance occurs at WSD
salt water intake, inform WSD.
|
1.Discuss mitigation measures
with ET and Contractor;
2. Review proposal on
mitigation measures submitted by Contractor and advise the ER accordingly;
3. Assess the effectiveness of
the implemented mitigation measures.
|
1. Discuss proposed mitigation
measures with IEC, ET and Contractor;
2. Request Contractor to
critically review the working methods;
3. Make agreement on the
mitigation measures to be implemented;
4. Assess the effectiveness of
the implemented mitigation measures.
|
1. Inform the ER and confirm
notification of the non-compliance in writing;
2. Rectify unacceptable
practice;
3. Check all plant and
equipment and consider changes of working methods;
4. Discuss with ET, IEC and ER
and submit proposal of mitigation measures to IEC and ER within 3 working
days of notification;
5. Implement the agreed
mitigation measures.
|
|
Limit level being exceeded by
two or more consecutive sampling days at water sensitive receiver(s)
|
1.
Identify the source(s) of impact by comparing the results with those
collected at the gradient stations and the control stations as appropriate;
2. If
exceedance is found to be caused by the marine works, repeat in-situ
measurement to confirm findings;
3.
Inform IEC, contractor and EPD;
4.
Check monitoring data, all plant, equipment and Contractor's working methods;
5.
Discuss mitigation measures with IEC, ER and Contractor;
6.
Ensure mitigation measures are implemented;
7.
Increase the monitoring frequency to daily until no exceedance of Limit level
for two consecutive days;
8. If
exceedance occurs at WSD salt water intake, inform WSD.
9. ET should contact AFCD if the limit level
is exceeded by one sampling day or two or more consecutive sampling days at
water sensitive receiver(s).
|
1. Discuss mitigation measures
with ET and Contractor;
2. Review proposal on
mitigation measures submitted by Contractor and advise the ER accordingly;
3. Assess the effectiveness of
the implemented mitigation measures.
|
1. Discuss proposed mitigation
measures with IEC, ET and Contractor;
2. Request Contractor to
critically review the working methods;
3. Make agreement on the
mitigation measures to be implemented;
4. Assess the effectiveness of
the implemented mitigation measures;
5. Consider and instruct, if
necessary, the Contractor to slow down or to stop all or part of the marine
work until no exceedance of Limit level.
|
1. Inform the ER and confirm
notification of the non-compliance in writing;
2. Rectify unacceptable practice;
3. Check all plant and
equipment and consider changes of working methods;
4. Discuss with ET, IEC and ER
and submit proposal of mitigation measures to IEC and ER within 3 working
days of notification;
5. Implement the agreed
mitigation measures;
6. As directed by the Engineer,
to slow down or to stop all or part of the construction activities.
|
7.9
Mitigation Measures
7.9.1
Marine
Piling and Pile Excavation Works
7.9.1.1
Marine piling and pile
excavation works shall be undertaken in such a manner as to minimise
re-suspension of sediments. Standard
good practice measures shall be implemented, including the following
requirements:
·
All
marine piling and pile excavation works shall be conducted within a floating
single silt curtain.
·
Mechanical
grabs (with a maximum size of 5m3) shall be designed and maintained to avoid
spillage and should seal tightly while being lifted.
·
Barges
shall have tight fitting seals to their bottom openings to prevent leakage of
material.
·
Any
pipe leakages shall be repaired quickly. Plant should not be operated with
leaking pipes.
·
Loading
of barges shall be controlled to prevent splashing of dredged material to the
surrounding water. Barges shall not be filled to a level which will cause
overflow of materials or pollution of water during loading or transportation.
·
Excess
material shall be cleaned from the decks and exposed fittings of barges before
the vessel is moved.
·
Adequate
freeboard shall be maintained on barges to reduce the likelihood of decks being
washed by wave action.
·
All
vessels shall be sized such that adequate clearance is maintained between
vessels and the sea bed at all states of the tide to ensure that undue
turbidity is not generated by turbulence from vessel movement or propeller
wash.
·
The
works shall not cause foam, oil, grease, litter or other objectionable matter
to be present in the water within and adjacent to the works site.
7.9.2
Construction
Site Runoff
7.9.2.1
In accordance with the
Practice Note for Professional Persons on Construction Site Drainage,
Environmental Protection Department, 1994 (ProPECC PN 1/94), construction phase
mitigation measures, where appropriate, shall include the following:
·
The
design of efficient silt removal facilities shall be based on the guidelines in
Appendix A1 of ProPECC PN 1/94. The detailed design of the sand/silt traps
should be undertaken by the contractor prior to the commencement of
construction.
·
Open
stockpiles of construction materials (for example, aggregates, sand and fill
material) of more than 50m3 shall be covered with tarpaulin or
similar fabric during rainstorms.
Measures shall be taken to prevent the washing away of construction
materials, soil, silt or debris into any marine water bodies.
·
All vehicles
and plant should be cleaned before leaving a construction site to ensure no
earth, mud, debris and the like is deposited by them on roads. Adequately designed and sited wheel washing
facilities shall be provided at every construction site exit where
practicable. Wash-water shall have sand
and silt settled out and 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 backfall toward the wheel-wash bay
to prevent vehicle tracking of soil and silty water to public roads and drains.
·
Construction
solid waste, debris and rubbish on site shall be collected, handled and
disposed of properly to avoid water quality impacts.
·
All
fuel tanks and storage areas shall be provided with locks and sited on sealed
areas, within bunds of a capacity equal to 110% of the storage capacity of the
largest tank to prevent spilled fuel oils from reaching water sensitive receivers
nearby.
·
Regular
environmental audit on the construction site shall be carried out in order to
prevent any malpractices. Notices shall
be posted at conspicuous locations to remind the workers not to discharge any
sewage or wastewater into the meander, wetlands and fish ponds.
7.9.2.2
By
adopting the above mitigation measures with best management practices, it is
anticipated that the impacts of construction site runoff from the construction
site will be reduced to satisfactory levels before discharges.
7.9.3
Sewage from Workforce
7.9.3.1
Portable chemical toilets
and sewage holding tanks shall be provided for handling the construction sewage
generated by the workforce. A licensed
contractor shall be employed to provide appropriate and adequate portable
toilets and be responsible for appropriate disposal and maintenance.
7.9.3.2
Notices should be posted at
conspicuous locations to remind the workers not to discharge any sewage or
wastewater into the nearby environment during the construction phase of the
Project. Regular environmental audit on
the construction site shall be conducted in order to provide an effective
control of any malpractices and achieve continual improvement of environmental
performance on site. It is anticipated
that sewage generation during the construction phase of the Project would not
cause water quality impact after undertaking all required measures.
7.9.4
All proposed mitigation
measures are summarised in the EMIS in Appendix
B.
8.1
Introduction
8.1.1
Waste management shall be
the contractor’s responsibility to ensure that all wastes produced during the
construction works for the Project, including excavated marine sediment, are
handled, stored and disposed of in accordance with good waste management
practices and EPD’s regulations and requirements.
8.1.2
Waste materials generated
during construction activities, such as construction and demolition (C&D)
materials and general refuse, shall be
audited at regular intervals (at least quarterly) to ensure that proper storage,
transportation and disposal practices are being implemented. This monitoring of waste management practices
shall ensure that these solid wastes generated during construction are not
disposed into the nearby coastal waters.
The Contractor shall be responsible for the implementation of any
mitigation measures to minimise waste or redress problems arising from the
waste materials. A waste management plan (WMP) shall be prepared as part of the
EMP in accordance with ETWB TCW No. 19/2005 and submitted to the Engineer for
approval. The monitoring and auditing
requirements of the WMP as detailed in ETWB TCW No. 19/2005 shall be followed
with regard to the management of C&D material.
8.2
Mitigation Measures
8.2.1
General
8.2.1.1
Mitigation measures for waste
management are summarised below. With the appropriate handling, storage and
removal of waste arising during the construction works as defined below, the
potential to cause adverse environmental impacts would be minimised. During the site inspections, the ET shall pay
special attention to the issues relating to waste management and check whether
the Contractor has implemented the recommended good site practices and other
mitigation measures.
8.2.2
Excavated Marine Sediments
8.2.2.1
The basic requirements and
procedures for excavated sediment disposal are specified under the ETWB TCW No.
34/2002. The management of the dredging,
use and disposal of marine mud is monitored by the Marine Fill Committee (MFC),
while the licensing of marine dumping is the responsibility of the Director of
Environmental Protection (DEP).
8.2.2.2
The excavated marine
sediments will be loaded onto barges and transported to the designated disposal
site. Based on the review of the
sediment testing results, it was estimated that some 4,300 m3 of
sediments could be suitable for open sea disposal.
8.2.2.3
During transportation and
disposal of the excavated marine sediments, the following measures shall be
taken to minimise potential impacts on water quality:
·
Bottom opening of barges should
be fitted with tight fitting seals to prevent leakage of material. Excess material should be cleaned from the
decks and exposed fittings of barges before the vessel is moved.
·
Monitoring of the barge loading
should be conducted to ensure that loss of material does not take place during
transportation.
·
Transport barges or vessels
should be equipped with automatic self-monitoring devices as specified by the
DEP.
·
Barges shall not be filled to a
level that would cause the overflow of materials or sediment-laden water during
loading or transportation.
8.2.3
Good Site Practices
8.2.3.1
Adverse impacts related to
waste management are not expected to arise, provided that good site practices
are strictly followed. Recommendations
for good site practices during the construction activities include:
·
Nomination of an approved
person, such as a site manager, to be responsible for good site practices,
arrangements for collection and effective disposal to an appropriate facility,
of all wastes generated at the site.
·
Training of site personnel in
proper waste management and chemical handling procedures.
·
Provision of sufficient waste
disposal points and regular collection of waste.
·
Appropriate measures to
minimise windblown litter and dust during transportation of waste by either
covering trucks or by transporting wastes in enclosed containers.
·
Regular cleaning and
maintenance programme for drainage systems, sumps and oil interceptors.
8.2.4
Waste Reduction Measures
8.2.4.1
Good management and control
can prevent the generation of a significant amount of waste. Waste reduction is best achieved at the
planning and design stage, as well as by ensuring the implementation of good
site practices. Recommendations to
achieve waste reduction include:
·
Segregation and storage of
different types of waste in different containers, skips or stockpiles to
enhance reuse or recycling of materials and their proper disposal.
·
Encourage collection of
aluminium cans by individual collectors by providing separate labelled bins to
enable this waste to be segregated from other general refuse generated by the
work force.
·
Proper storage and site
practices to minimise the potential for damage or contamination of construction
materials.
·
Plan and stock construction
materials carefully to minimise amount of waste generated and avoid unnecessary
generation of waste.
8.2.4.2
In addition to the above
measures, specific mitigation measures are recommended below for the identified
waste arising to minimise environmental impacts during handling, transportation
and disposal of these wastes.
8.2.5
General Refuse
8.2.5.1
General refuse shall be
stored in enclosed bins or compaction units separate from C&D
material. A reputable waste collector
shall be employed by the contractor to remove general refuse from the site,
separately from C&D material.
Preferably an enclosed and covered area should be provided to reduce
windblown litter.
8.2.6
Construction and Demolition
Material
8.2.6.1
In order to minimise the
impact resulting from collection and transportation of C&D material for
off-site disposal, the C&D material from the excavation works shall be reused
on-site as backfilling material as far as practicable.
8.2.7
Chemical Wastes
8.2.7.1
If chemical wastes are
produced at the construction site, the Contractor is required to register with
EPD as a Chemical Waste Producer and to follow the guidelines stated in the
Code of Practice on the Packaging, Labelling and Storage of Chemical
Wastes. Good quality containers
compatible with the chemical wastes shall be used and incompatible chemicals
shall be stored separately. Appropriate
labels shall be securely attached on each chemical waste container indicating
the corresponding chemical characteristics of the chemical waste, such as
explosive, flammable, oxidizing, irritant, toxic, harmful, corrosive,
etc.. The Contractor shall use a
licensed collector to transport and dispose of the chemical wastes, to either
the Chemical Waste Treatment Centre at Tsing Yi, or another licensed facility,
in accordance with the Waste Disposal (Chemical Waste) (General) Regulation.
8.2.8
A summary of all mitigation
measures is provided in the EMIS in Appendix B.
9.1
Introduction
9.1.1
The marine ecological
impact assessment conducted for this study concluded that impacts from the
construction of CBL were mainly associated with the direct loss of marine
habitats due to pile construction works at pier foundations. In terms of
ecological importance, ecological assessment indicated that the affected
habitats were generally of low ecological value. With implementation of
mitigation measures, it was concluded that adverse indirect marine ecological
impacts on marine ecological sensitive receivers were not expected.
9.2
Monitoring and Mitigation
Measures
9.2.1
The major source of water
quality impact arising from the Project, which may impact coral sites in Junk
Bay, would be associated with the pile construction works for pier foundations. During the
construction phase, monitoring and audit activities for detecting and
mitigating any unacceptable impact on water quality would serve to protect marine
habitats in proximity to CBL to acceptable levels.
9.2.2
Mitigation measures and
constraints to control water quality are set out in Section 8 of this
EM&A Manual and include the deployment of good site practices for dredging
works.
9.2.3
A summary of all mitigation
measures can be found in the EMIS in Appendix
B.
10.1
Introduction
10.1.1
The fisheries impact
assessment concluded that the impact of direct loss of fishing ground due to
the proposed development was relatively minor due to the generally low
importance of the fishing area in inner Junk Bay to the Hong Kong fishery and
the low production at this area.
10.1.2
Based on water quality
model predictions taking into account the recommended deployment of mitigation
measures, the suspension of sediment into the water column by pile construction
works is not expected to have a significant impact on fisheries resources. Furthermore, the closest fisheries sensitive
receiver, Tung Lung Chau FCZ is located
approximately 4.2 km away from the proposed project. It is predicted that elevations in SS at
this, the only fisheries sensitive receiver, would be negligible and would not
result in adverse impacts on cultured fish.
10.2
Monitoring and Mitigation
Measures
10.2.1
Closed grab dredger,
deployment of silt curtains around the immediate pile construction works area,
have been recommended in the Water Quality chapter of the EIA report in order
to minimise sediment release into the water column. Monitoring and audit activities for detecting
and mitigating any unacceptable impact on water quality would also serve to
protect fisheries resources. Detailed
EM&A requirements are provided in Section 8 of the EIA (Water
Quality Monitoring). Specific EM&A activities to assess the effects of the
project on commercial fisheries resources are not deemed necessary.
10.2.2
A summary of the proposed
mitigation measures can be found in the EMIS in Appendix B.
11.1
Assessment Results and
Mitigation Measures
11.1.1
A comprehensive Marine
Archaeological Investigation was completed which followed exactly the
methodology set out by the HKSAR Antiquities and Monuments Office. The study did not locate any cultural
heritage resources. The diver survey indicated that in many areas the seabed
had been disturbed by previous construction work.
11.1.2
Therefore, there is no
further action or mitigation required.
12.1
Introduction
12.1.1
The EIA recommended landscape and visual mitigation measures to be
undertaken during both the construction and operational phases of the
project. This section outlines the
monitoring and audit of these measures.
12.2
Monitoring Details
12.2.1
The design,
implementation and maintenance of landscape mitigation measures shall be
checked to ensure that they are fully realised and that potential conflicts
between the proposed landscape measures and any other project works and
operational requirements are resolved at the earliest possible date and without
compromise to the intention of the mitigation measures.
12.2.2
Table 13.1 indicates the monitoring
programme.
Table 13.1
Landscape and Visual Monitoring Programme
|
Stage
|
Monitoring Task
|
Monitoring Report
|
Form
of Approval
|
Frequency
|
|
Design
|
Monitoring of design works
against the recommendations of the landscape and visual impact assessments
within the EIA should be undertaken during detailed design and tender stages,
to ensure that they fulfill the intentions of the mitigation measures. Any changes to the design, including design
changes on site shall also be checked.
|
Report by Engineer
confirming that the design conforms to requirements of EP.
|
Approval by Client
|
At completion of design stage
|
|
Construction
|
Monitoring of the contractor’s
operations during the construction period.
|
Report on Contractor's
compliance by ET
|
Counter-signature of report by
IEC
|
Monthly
|
|
Establishment
Works
|
Monitoring of the planting
works during the 24-month Establishment Period after completion of the
construction works.
|
Report on Contractor's
compliance by ET
|
Counter-signature of report by
IEC
|
Bi- monthly
|
12.2.3
Detailed Design Phase
12.2.3.1
The mitigation measures
proposed within the EIA to mitigate the landscape and visual impacts of the
scheme shall be embodied into the detailed engineering design and landscape
design drawings and contract documents.
Detailed landscaping drawings and specification shall be checked during
detailed design stage and before tender stage by a Registered Landscape
Architect to ensure that the measures are fully incorporated and that potential
conflicts with civil engineering, geo-technical, structural, lighting, signage,
drainage, underground utility and operational requirements are resolved prior
to construction. Monitoring of design works against the recommendations of the
landscape and visual impact assessments within the EIA shall be undertaken when
the designs are produced to ensure that they fulfil the intentions of
mitigation measures.
12.2.4
Construction Phase and
Establishment Period
12.2.4.1
The implementation of
landscape construction works and subsequent maintenance operations during the
12-month Establishment Period must be supervised by qualified Landscape
Resident Site Staff (Registered Landscape Architect or Professional Member of
the Hong Kong Institute of Landscape Architects).
12.2.4.2
Measures to mitigate
landscape and visual impacts during construction should be checked and
monitored by a Registered Landscape Architect to ensure compliance with the
intended aims of the mitigation measures.
12.2.4.3
The progress of the
engineering works shall be regularly reviewed on site to identify the earliest
practical opportunities for the landscape works to be undertaken.
12.3
Baseline Monitoring
12.3.1
A photographic record of
the site at the time of the Contractor’s possession of the site shall be
prepared by the Contractor and approved by the ER. The approved photographic record shall be
submitted to the Project Proponent, ET, IEC and EPD for record.
12.4
Event and Action Plan
12.4.1
Exceedances of the
predicted landscape and visual impacts would occur if:
·
The landscape and visual
mitigation measures prescribed in the EIA are for some reason compromised,
either before, during or after they have been implemented on the ground; or
·
The engineering design alters
to a point where the prescribed landscape and visual mitigation measures are no
longer sufficient to mitigate the impacts to the level predicted in the EIA.
12.4.2
Typical causes of
exceedance would be:
·
Unnecessary damage to existing
vegetation, particularly trees.
·
Trespass and damage to adjacent
landscape areas.
·
Soil contamination prejudicing
future planting work.
·
Uncontrolled site lighting
causing glare to surrounding residents.
·
Substitution of originally
specified plant species with different species which do not provide the
required landscape effect (e.g. structure planting effect, screening effect;
greening and visual softening effect).
12.4.3
The event action plan processes
for dealing with exceedances are described in Table 13.2.
Table 13.2
Event and Action Plan for Construction and Establishment Periods
|
EVENT
|
ACTION
|
|
ET
|
IEC
|
ER
|
CONTRACTOR
|
|
Exceedance on one occasion
|
1. Identify Source;
2. Inform IEC and ER;
3. Discuss remedial actions
with IEC, ER and Contractor;
4. Monitor remedial actions until
rectification has been completed.
|
1.
Check monitoring report;
2.
Check Contractors working method;
3.
Discuss with ET and Contractor on possible remedial measures;
4.
Advise ER on effectiveness of proposed remedial measures;
5.
Check implementation of remedial measures.
|
1.
Notify Contractor;
2.
Ensure remedial measures are properly implemented.
|
1. Amend working methods;
2. Rectify damage and undertake
any necessary replacement.
|
|
Repeated Exceedance
|
1. Identify source;
2. Inform IEC and ER;
3. Increase monitoring
frequency;
4. Discuss remedial actions
with IEC, ER and Contractor;
5. Monitor remedial actions
until rectification has been completed;
6. If exceedance stops, cease
additional monitoring.
|
1.
Check monitoring report;
2.
Check Contractor’s working method;
3.
Discuss with ET and Contractor on possible remedial measures;
4.
Advise ER on effectiveness of proposed remedial measures;
5.
Supervise implementation of remedial measures.
|
1.
Notify Contractor;
2.
Ensure remedial measures are properly implemented.
|
1. Amend working methods;
2. Rectify damage and undertake
any necessary replacement.
|
12.5
Mitigation Measures
12.5.1
The landscape and visual
impact assessment of the EIA recommends a series on mitigation measures to
ameliorate the landscape and visual impacts of the project. All the proposed mitigation measures are
summarised in the EMIS in Appendix B.
13.1
Introduction
13.1.1
Two landfills, namely
Tseung Kwan O Stage I Landfill (TKOL-I) and Tseung Kwan O Stage II/III Landfill
(TKOL-II/III), are located in the proximity of the eastern end of the CBL
project. The CBL / Wan Po Road junction,
which aligns with Wan O Road and links up Wan Po Road, encroaches into the 250m
Consultation Zone of TKOL-II/III. The
relative location of the landfills and CBL is shown on Drawing no. 209506/EMA/LFG/001.
13.1.2
A qualitative risk
assessment of Landfill Gas (LFG) hazard on the potential sensitive receivers
has been carried out for the safety of the development and mainly focusing on
the TKOL-II/III.
13.1.3
As the CBL is at least 500m
away from TKOL-I, landfill gas hazard assessment is not required under the EIA
Study Brief.
13.2
Landfill Gas Parameters
13.2.1
Monitoring shall be carried
out and reported in a similar manner to the landfill Restoration Contract in
order to provide comparable data. An
example of landfill gas monitoring data form as used in the Restoration Contract
is presented in Appendix D. The presentation format for landfill gas
monitoring should be based on this format and agreed with EPD.
13.3
Monitoring Equipment
13.3.1
Intrinsically safe,
portable gas detectors should be used when working in any confined space, which
has the potential for the presence of landfill gas and the risk of explosion or
asphyxiation. The monitoring equipment
shall alarm (both audibly and visually) in the event that the concentrations of the
following are exceeded:
·
Methane – higher than 10% LEL
·
Carbon dioxide – higher than
0.5%
·
Oxygen – lower than 18% by
volume
13.3.2
Pre-entry and routine
monitoring should be conducted at utilities’ manholes and chambers. The routine monitoring shall be conducted on
a regular basis and the frequency of the monitoring shall be subject to the
results of the initial monitoring exercise.
The following shall apply to the landfill gas monitoring instruments:
·
Comply with the EPD’s Landfill
Gas Hazard Assessment – Guidance Note as intrinsically safe.
·
Be capable of continuous
monitoring of methane, oxygen and carbon dioxide.
·
Be capable of continuous
barometric pressure and gas pressure measurement.
·
Normally operate in diffusion
mode unless required for spot sampling, when it shall be capable of operating
by means of an aspirator or pump.
·
Have low battery, fault and
over range indication incorporated.
·
Store monitoring date, and
shall be capable of being down-loaded directly to a PC.
·
Measure in the following
ranges:
-
Methane 0-100% LEL & 0-100%
v/v,
-
Oxygen 0-25% v/v,
-
Carbon dioxide 0-100% v/v,
-
Barometric pressure mBar
(absolute),
-
Gas pressure (relative to
atmosphere) Pascals, and
-
Temperature 0-100oC.
13.3.3
The equipment used to
monitor LFG concentrations in excavations may be the same as that described for
routine landfill gas monitoring of manholes in the section above, as long as
safety parameters described above can be achieved.
13.4
Monitoring Locations
13.4.1
Monitoring of Construction
Works
13.4.1.1
During construction
activities within the 250m Consultation Zone of Tseung Kwan O Stage II &
III Landfill, it is recommended that pre-entry monitoring should be undertaken,
where applicable, in accordance with the requirements of the Factories and
Industrial Undertaking (Confined Spaces) Regulation. For excavations of 1m depth or more, landfill
gas should be monitored before entry and periodically during the works. If drilling is required, the procedures for
safety management and working procedures described in the EPD’s Landfill Gas Hazard Assessment – Guidance
Note should be adopted. The aforesaid procedures are listed as below:
Working Procedures
·
On arrival at site the drilling
rig should be set-up up-wind of the borehole location, 'No smoking' signs set out
and the working area should be roped or coned-off.
·
When drilling on landfill
sites, all spoil obtained from the borehole should be stockpiled alongside the
borehole and disposed of (to an appropriately licensed disposal site) at the
end of the working day. At the end of the working day all vehicles, the
drilling rig and any hand tools should be hosed-down with clean water to remove
deposits of excavated spoil. Suitable guards or barriers should be placed
around the excavation or borehole to prevent access by unauthorised persons.
Safety Procedures
·
One person should be present at
all times during drilling operations, with the sole responsibility of assuring
the observance of all safety procedures. This person should be trained in the
use of all recommended safety equipment.
·
Smoking should be prohibited
anywhere on a landfill site and within 15 metres of aboring or excavation at
any locations within the Consultation Zone.
·
For large diameter boreholes, a
working platform should be placed over the hole which will prevent accidental
entry into the hole by operatives.
·
No worker should be allowed to
work alone at any time near the edge of the well under construction. Another
worker should always be present, beyond the area considered to be subject to
the possible effects of landfill gas or cave-in.
·
Periodically during the well
construction, the work areas should be monitored for levels of methane.
·
If the well construction is not
completed by the end of the working day, the hole should be covered with a
plate of sufficient overlap to prevent access to the hole and sufficient
structural strength to support expected loads. The plate should be weighted
down to discourage removal and, on landfill sites, the edges of the plate
should be covered with sufficient depth of wet soil to prevent escape of gas.
·
All pipes or casings should be
capped at the end of each working day.
·
Engine-driven rigs should have
vertical exhaust stacks discharging not less than 1.5m above ground level and
should have overspeed limits to prevent engine run away on ingested gas.
·
Diesel engine air-intakes
should also be located not less than 1.5m above ground level.
·
Any electrical equipment should
be intrinsically safe.
·
Additional safety advice and
guidance may be found in 'Investigation into Establishing an Effective
Practical Safe Working Practice When Drilling in Landfill Sites and Adjacent
Areas and Contaminated Ground and Adjacent Areas' compiled by the British
Drilling Association (1993).
13.4.2
Operational Landfill Gas
Monitoring
13.4.2.1
During operation, when service
voids, manholes or inspection chambers within the proposed site are entered for
maintenance, monitoring and a checklist system of safety requirements shall be
performed before entry in accordance with the Code of Practice on Safety and
Health at Work in
Confined Spaces.
13.4.2.2
The maintenance companies
shall undertake a landfill gas surveillance exercise at the utility
manholes/inspection chambers. The
surveillance exercise shall be undertaken using an intrinsically safe portable
instrument, appropriately calibrated and capable of measuring the requirements
as mentioned in Section 13.3.2. The monitoring shall be undertaken for the
duration of the site occupancy, or until such time that EPD agrees that
surveillance is no longer required.
Depending on the results of the measurements, actions required will vary
and shall be set down by appropriately qualified person. As a minimum these should encompass those
actions specified in Table 12.1.
13.5
Limit
Levels and Event and Action Plan
13.5.1
The Limit levels and
relevant Action Plans for landfill gas detected in utilities and any on-site
areas following construction are shown in Table 12.1 below.
Table 12.1
Limit Levels and Action Plan for Landfill Gas
|
Parameter
|
Limit
Level
|
Action
|
|
Oxygen
|
<19%
|
Ventilation
to restore oxygen >19%
|
|
<18%
|
Stop works
Evacuate personnel/prohibit entry
Increase ventilation to restore oxygen to >19%
|
|
Methane
|
>10% LEL
(i.e. >0.5% by volume)
|
Post “No Smoking” signs
Prohibit hot works
Ventilate to restore methane to <10% LEL
|
|
>20% LEL
(i.e. >1% by volume)
|
Stop works
Evacuate personnel/prohibit entry
Increase ventilation to restore methane to
<10% LEL
|
|
Carbon Dioxide
|
>0.5%
|
Ventilate to restore carbon dioxide to <0.5%
|
|
>1.5%
|
Stop works
Evacuate personnel/prohibit entry
Increase ventilation to restore carbon dioxide to
<0.5%
|
13.6
Mitigation
Measures
13.6.1
The EIA Report has
recommended construction and operational phase mitigation measures. All the proposed mitigation measures are
summarised in the EMIS in Appendix B.
14.1
Site Inspection
14.1.1
Site inspections provide a
direct means to initiate and enforce specified environmental protection and
pollution control measures. These shall
be undertaken routinely to inspect construction activities in order to ensure
that appropriate environmental protection and pollution control mitigation
measures are properly implemented. Site
inspection is one of the most effective tools to enforce the environmental
protection requirements at the works area.
14.1.2
The ET Leader shall be
responsible for formulating the environmental site inspection programme, the
deficiency and remedial action reporting system, and for carrying out the site
inspection works. The ET Leader shall
submit a proposal for site inspection programme and deficiency and remedial
action reporting procedures to the Contractor for agreement, and to the ER for
approval. The ET Leader’s proposal for any rectification required in the
proposal shall be made known to the IEC.
14.1.3
Regular site inspections
shall be carried out at least once per week.
The areas of inspection shall not be limited to the environmental
situation, pollution control and mitigation measures within the site; it shall
also review the environmental situation outside the works area which is likely
to be affected, directly or indirectly, by the site activities. The ET shall make reference to the following
information in conducting the inspection:
·
The EIA and EM&A
recommendations on environmental protection and pollution control mitigation
measures.
·
Ongoing results of the EM&A
program.
·
Works progress and programme.
·
Individual works methodology
proposals (which shall include proposal on associated pollution control
measures).
·
Contract specifications on
environmental protection and pollution control measures.
·
Relevant environmental
protection and pollution control laws.
·
Previous site inspection
results undertaken by the ET and others.
14.1.4
The Contractor shall keep
the ET Leader updated with all relevant information on the construction
contract necessary for the ET to carry out the site inspections. Inspection
results and associated recommendations for improvements to the environmental
protection and pollution control works shall be submitted to the IEC and the
Contractor within 1 working day. The
Contractor shall follow the procedures and time-frame stipulated in the
environmental site inspection, and the deficiency and remedial action reporting
system formulated by the ET Leader, to report on any remedial measures
subsequent to the site inspections
14.1.5
The ET shall also carry out
ad hoc site inspections if significant environmental problems are identified.
Inspections may also be required subsequent to receipt of an environmental
complaint, or as part of the investigation work, as specified in the Action
Plan for environmental monitoring and audit.
14.2
Compliance with Legal and
Contractual Requirements
14.2.1
There are contractual environmental
protection and pollution control requirements as well as environmental
protection and pollution control laws in Hong Kong with which construction
activities must comply.
14.2.2
In order that the works
comply with the contractual requirements, all works method statements submitted
by the Contractor to the ER for approval shall be sent to the ET Leader for
vetting to ensure sufficient environmental protection and pollution control
measures have been included. The implementation
schedule of mitigation measures is summarised in Appendix B.
14.2.3
The ET Leader shall also
review the progress and programme of the works to check that relevant
environmental laws have not been violated, and that any foreseeable potential
for violating laws can be prevented.
14.2.4
The Contractor shall
regularly copy relevant documents to the ET Leader so that works checking could
be carried out effectively. The document
shall at least include the updated Works Progress Reports, updated Works Programme,
any application letters for different licence / permits under the environmental
protection laws, and copies of all valid licences / permits. The site diary shall also be available for
the ET Leader's inspection upon his request.
14.2.5
After reviewing the
document, the ET Leader shall advise the IEC and Contractor of any
non-compliance with contractual and legislative requirements on environmental
protection and pollution control for them to take follow-up actions. If the ET Leader's review concludes that the
current status on licence / permit application and any environmental protection
and pollution control preparation works may result in potential violation of
environmental protection and pollution control requirements, he shall also
advise the Contractor and ER accordingly.
14.2.6
Upon receipt of the advice,
the Contractor shall undertake immediate action to correct the situation. The ER shall follow up to ensure that
appropriate action has been taken in order to satisfy contractual and legal
requirements.
14.3
Environmental Complaints
14.3.1
Complaints shall be
referred to the ET Leader for action.
The ET Leader shall undertake the following procedures upon receipt of
any complaint:
(i)
Log complaint and date of
receipt onto the complaint database and inform the IEC immediately.
(ii)
Investigate the complaint to
determine its validity, and assess whether the source of the problem is due to
works activities.
(iii)
Identify mitigation measures in
consultation with the IEC if a complaint is valid and due to works.
(iv)
Advise the Contractor if
mitigation measures are required.
(v)
Review the Contractor's
response to identify mitigation measures and the updated situation.
(vi)
If the complaint is transferred
from EPD, submit an interim report to EPD on status of the complaint
investigation and follow-up action within the time frame assigned by EPD.
(vii)
Undertake additional monitoring
and audit, as necessary, to verify the situation and review that circumstances
leading to the complaint do not reoccur.
(viii)
Report investigation results
and subsequent actions to complainant (if the source of complaint is EPD, the
results should be reported within the timeframe assigned by EPD).
(ix)
Record the complaint,
investigation, the subsequent actions and the results in the monthly EM&A
reports.
15.1
General
15.1.1
Reports can be provided in
an electronic medium upon agreeing the format with the ER and EPD. This would enable a transition from a paper /
historic and reactive approach to an electronic / real time proactive approach. All the monitoring data (baseline and impact)
shall also be submitted in electronic format.
The formats for air quality, noise, water quality and landfill gas
monitoring data to be submitted shall be separately agreed.
15.1.2
Types of reports that the
ET Leader shall prepare and submit include baseline monitoring report, monthly
EM&A report, quarterly EM&A summary report and final EM&A review
report. In accordance with Annex 21 of
the EIAO-TM, a copy of the monthly, quarterly summary and final review EM&A
reports shall be made available to the Director of Environmental Protection.
15.2
Electronic Reporting of
EM&A Information
15.2.1
To facilitate public
inspection of the baseline monitoring report and various EM&A reports via
the EIAO Internet website and at the EIAO register office, electronic copies of
these reports shall be prepared in Hyper Text Markup Language (HTML) (version
4.0 or later) and in Portable Document Format (PDF version 4.0 or later),
unless otherwise agreed by EPD and shall be submitted at the same time as the
hardcopies. For the HTML version, a
content page capable of providing hyperlink to each section and sub-section of
these reports shall be included at the beginning of the document. Hyperlinks to all figures, drawings and
tables in these reports shall be provided in the main text from where the
respective references are made. All
graphics in these reports shall be in interlaced GIF format unless otherwise
agreed by EPD. The content of the
electronic copies of these reports must be the same as the hard copies. The summary of the monitoring data taken
shall be included in the various EM&A Reports to allow for public
inspection via the EIAO Internet website.
15.3
Baseline Monitoring Report
15.3.1
The ET Leader shall prepare
and submit a Baseline Environmental Monitoring Report within 10 working days of
completion of the baseline monitoring.
Copies of the Baseline Environmental Monitoring Report shall be
submitted to the Contractor, the IEC, the ER and EPD. The ET Leader shall liaise with the relevant
parties on the exact number of copies they require. The report format and baseline monitoring
data format shall be agreed with EPD prior to submission.
15.3.2
The baseline monitoring
report shall include at least the following:
(i)
Up to half a page executive
summary.
(ii)
Brief project background
information.
(iii)
Drawings showing locations of
the baseline monitoring stations.
(iv)
An updated construction
programme with milestones of environmental protection / mitigation activities annotated.
(v)
Monitoring results (in both
hard and diskette copies) together with the following information:
·
Monitoring methodology;
·
Name of laboratory, types of
equipment used and calibration details;
·
Parameters monitored;
·
Monitoring locations (and
depth);
·
Monitoring date, time,
frequency and duration; and
·
Quality assurance (QA) /
quality control (QC) results and detection limits.
(vi)
Details of influencing factors,
including major activities, if any, being carried out on the site during the
period; weather conditions during the period; and other factors which might
affect results.
(vii)
Determination of the Action and
Limit Levels (AL Levels) for each monitoring parameter and statistical analysis
of the baseline data, the analysis shall conclude if there is any significant
difference between control and impact stations for the parameters monitored.
(viii)
Revisions for inclusion in the
EM&A Manual.
(ix)
Comments, recommendations and
conclusions.
15.4
Monthly EM&A Reports
15.4.1
The results and findings of
all EM&A work required in the Manual shall be recorded in the monthly
EM&A reports prepared by the ET Leader. The EM&A report shall be
prepared and submitted within 10 working days at the end of each reporting
month, with the first report due the month after construction commences. Each monthly EM&A report shall be
submitted to the following parties: the Contractor, the IEC, the ER and EPD.
Before submission of the first EM&A report, the ET Leader shall liaise with
the parties on the required number of copies and format of the monthly reports
in both hard copy and electronic medium.
15.4.2
The ET leader shall review
the number and location of monitoring stations and parameters every six months,
or on an as needed basis, in order to cater for any changes in the surrounding
environment and the nature of works in progress.
15.4.3
First Monthly EM&A Report
15.4.3.1
The first monthly EM&A
report shall include at least the following:
(i)
Executive summary (1-2 pages)
including:
·
Breaches of Action and Limit
levels,
·
Complaint log,
·
Notifications of any summons
and successful prosecutions,
·
Reporting changes, and
·
Future key issues.
(ii)
Basic project information
including:
·
Project organisation including
key personnel contact names and telephone numbers,
·
Programme,
·
Management structure, and
·
Works undertaken during the
month.
(iii)
Environmental status including:
·
Works undertaken during the
month with illustrations (such as location of works, daily excavation rate,
etc), and
·
Drawings showing the project
area, any environmental sensitive receivers and the locations of the monitoring
and control stations (with co-ordinates of the monitoring locations).
(iv)
A brief summary of EM&A requirements
including:
·
All monitoring parameters;
·
Environmental quality
performance limits (Action and Limit levels);
·
Event-Action Plans;
·
Environmental mitigation
measures, as recommended in the Final EIA
report; and
·
Environmental requirements in
contract documents.
(v)
Implementation status
including:
·
Advice on the implementation
status of environmental protection and pollution control / mitigation measures,
as recommended in the Final EIA report, summarised in the updated
implementation schedule.
(vi)
Monitoring results (in both
hard and diskette copies) including:
·
Monitoring methodology;
·
Name of laboratory, types of
equipment used and calibration details;
·
Parameters monitored;
·
Monitoring locations (and
depth);
·
Monitoring date, time,
frequency, and duration;
·
Weather conditions during the
period;
·
Graphical plots of the
monitored parameters in the month annotated against:
·
the major activities being
carried out on site during the period,
·
weather conditions that may
affect the results, and
·
any other factors which might affect
the monitoring results;
·
Any other factors which might
affect the monitoring results; and
·
Quality assurance (QA) /
quality control (QC) results and detection limits.
(vii) Report on non-compliance, complaints, and notifications of summons
and successful prosecutions including:
·
A record of all non-compliance
(exceedances) of the environmental quality performance limits (Action and Limit
levels);
·
A record of all complaints
received (written or verbal) for each media, including locations and nature of complaints
investigation, liaison and consultation undertaken, actions and follow-up
procedures taken, results and summary;
·
A record of all notification of
summons and successful prosecutions for breaches of current environmental
protection / pollution control legislation, including locations and nature of
the breaches, investigation, follow-up actions taken, results and summary;
·
A review of the reasons for and
the implications of non-compliance, complaints, summons and prosecutions
including review of pollution sources and working procedures; and
·
A description of the actions
taken in the event of non-compliance and deficiency reporting and any follow-up
procedures related to earlier non-compliance.
(viii) Others:
·
An account of the future key
issues as reviewed from the works programme and work method statements;
·
Advice on the solid and liquid
waste management status; and
·
Comments (e.g., effectiveness
and efficiency of the mitigation measures), recommendations (e.g., any
improvement in the EM&A programme) and conclusions.
15.4.4
Subsequent EM&A Reports
15.4.4.1
Subsequent monthly EM&A
reports shall include the following:
(i)
Executive summary (1 - 2 pages)
including:
·
Breaches of Action and Limit
levels,
·
Complaints log,
·
Notifications of any summons
and successful prosecutions,
·
Reporting changes, and
·
Future key issues.
(ii)
Basic project information
including:
·
Project organisation including
key personnel contact names and telephone numbers,
·
Programme,
·
Management structure, and
·
Work undertaken during the
month.
(iii) Environmental status
including:
·
Construction programme with
fine tuning of construction activities showing the inter-relationship with
environmental protection / mitigation measures for the month;
·
Works undertaken during the
month with illustrations including key personnel contact names and telephone
numbers; and
·
Drawing showing the project
area, any environmental sensitive receivers and the locations of the monitoring
and control stations.
(iv) Implementation status
including:
·
Advice on the implementation
status of environmental protection and pollution control / mitigation measures,
as recommended in the Final EIA report, summarised in the updated
implementation schedule.
(v) Monitoring results (in
both hard and diskette copies) together with the following information:
·
Monitoring methodology;
·
Name of laboratory, types of
equipment used and calibration details;
·
Parameters monitored;
·
Monitoring locations (and
depth);
·
Monitoring date, time,
frequency, and duration;
·
Weather conditions during the
period;
·
Graphical plots of the
monitored parameters in the month annotated against the following:
·
The major activities being
carried out on site during the period,
·
The weather conditions that may
affect the results, and
·
Any other factors which might
affect the monitoring results;
·
Any other factors which might
affect the monitoring results; and
·
QA / QC results and detection
limits.
(vi) Report on
non-compliance, complaints, and notifications of summons and successful
prosecutions including:
·
A record of all non-compliance
(exceedances) of the environmental quality performance limits (Action and Limit
levels);
·
A record of all complaints
received (written or verbal) for each media, including locations and nature of
complaints investigation, liaison and consultation undertaken, actions and
follow-up procedures taken, results and summary;
·
A record of all notification of
summons and successful prosecutions for breaches of current environmental
protection / pollution control legislation, including locations and nature of
the breaches, investigation, follow-up actions taken, results and summary;
·
A review of the reasons for and
the implications of non-compliance, complaints, summons and prosecutions
including review of pollution sources and working procedures; and
·
A description of the actions
taken in the event of non-compliance and deficiency reporting and any follow-up
procedures related to earlier non-compliance.
(vii) Others:
·
An account of the future key
issues as reviewed from the works programme and work method statements;
·
Advice on the solid and liquid
waste management status; and
·
Comments (e.g., effectiveness
and efficiency of the mitigation measures), recommendations (e.g., any
improvement in the EM&A programme) and conclusions.
(viii) Appendices including:
·
Action and Limit levels;
·
Graphical plots of trends of
monitored parameters at key stations over the past four reporting periods for
representative monitoring stations annotated against the following:
·
Major activities being carried
out on site during the period,
·
Weather conditions during the
period, and
·
Any other factors that might
affect the monitoring results;
·
Monitoring schedule for the
present and next reporting period;
·
Cumulative statistics on
complaints, notifications of summons and successful prosecutions; and
·
Outstanding issues and
deficiencies.
15.5
Quarterly EM&A Summary
Reports
15.5.1
A quarterly EM&A
summary report of around five pages shall be produced and shall contain at
least the following information. Apart
from these, the first quarterly summary report should also confirm that the
monitoring work is proving effective and that it is generating data with the
necessary statistical power to categorically identify or confirm the absence of
impact attributable to the works.
(i) Executive summary (1 -
2 pages);
(ii) Basic project
information including a synopsis of the project organisation, programme,
contacts of key management, and a synopsis of works undertaken during the
quarter;
(iii) A brief summary of
EM&A requirements including:
·
Monitoring parameters,
·
Environmental quality performance
limits (Action and Limit levels), and
·
Environmental mitigation
measures, as recommended in the project EIA Final Report;
(iv) Advice on the
implementation status of environmental protection and pollution control /
mitigation measures, as recommended in the project EIA Final Report, summarised
in the updated implementation schedule;
(v) Drawings showing the
project area, any environmental sensitive receivers and the locations of the
monitoring and control stations;
(vi) Graphical plots of any
trends in monitored parameters over the past four months (the last month of the
previous quarter and the present quarter) for representative monitoring
stations annotated against the following:
·
The major activities being
carried out on site during the period,
·
The weather conditions during
the period, and
·
Any other factors which might
affect the monitoring results;
(vii) Advice on the solid and
liquid waste management status;
(viii) A summary of
non-compliance (exceedances) of the environmental quality performance limits
(Action and Limit levels);
(ix) A brief review of the
reasons for and the implications of any non-compliance, including a review of
pollution sources and working procedures;
(x) A summary description of
actions taken in the event of non-compliance and any follow-up procedures
related to any earlier non-compliance;
(xi) A summarised record of
all complaints received (written or verbal) for each media, liaison and
consultation undertaken, actions and follow-up procedures taken;
(xii) A summary record of notifications of summons
and successful prosecutions for breaches of the current environmental
protection / pollution control legislations, locations and nature of the
breaches, investigation, follow-up
actions taken and results;
(xii) Comments (e.g., a review
of the effectiveness and efficiency of the mitigation measures and the
performance of the environmental management system of the overall EM&A
programme), recommendations (e.g., any improvement in the EM&A programme)
and conclusions for the quarter; and
(xiii) Project Proponent’s
contacts and any hotline telephone number for the public to make enquiries.
15.6
Final EM&A Review Reports
15.6.1
The EM&A program shall
be terminated upon completion of those construction activities that have the
potential to result in a significant environmental impact.
15.6.2
Prior to the proposed
termination, it may be advisable to consult relevant local communities (such as
village representatives/ communities and/ or District Boards). The proposed
termination should only be implemented after the proposal has been endorsed by
the IEC, the Engineer and the Project proponent followed by final approval from
the Director of Environmental Protection.
15.6.3
The final EM&A report
should contain at least the following information:
(i) Executive summary (1 -
2 pages);
(ii) Basic project
information including a synopsis of the project organisation, contacts of key
management, and a synopsis of work undertaken during the course of the project
or past twelve months;
(iii) A brief summary of
EM&A requirements including:
· Monitoring parameters,
·
Environmental quality
performance limits (Action and Limit levels), and
·
Environmental mitigation
measures, as recommended in the Final EIA report;
(iv) Advice on the implementation status of
environmental protection and pollution control / mitigation measures, as
recommended in the Final EIA report, summarised in the updated implementation
status schedule;
(v) Drawings showing the project area, any
environmental sensitive receivers and the locations of the monitoring and
control stations;
(vi) Graphical plots of the
trends of monitored parameters over the course of the project, including the
post-project monitoring for all monitoring stations, annotated against the
following:
·
The major activities being
carried out on site during the period,
·
The return of ambient
environmental conditions in comparison with baseline data,
·
The weather conditions during
the period, and
·
Any other factors which might
affect the monitoring results;
(vii) Compare and contrast the EM&A data with
the EIA predictions and annotate with explanation for any discrepancies;
(viii) Provide clear-cut decisions on the
environmental acceptability of the project with reference to the specific
impact hypothesis;
(ix) Advice on the solid and liquid waste management
status;
(x) A summary of non-compliance (exceedances) of
the environmental quality performance limits (Action and Limit levels);
(xi) A brief review of the reasons for and the
implications of non-compliance including review of pollution sources and
working procedures;
(xii) A summary description of the actions taken in
the event of non-compliance and any follow-up procedures related to earlier
non-compliance;
(xiii) A summary record of all complaints received
(written or verbal) for each media, liaison and consultation undertaken,
actions and follow-up procedures taken;
(xiv) Review of the monitoring methodology adopted,
and with the benefit of hindsight, comment on its effectiveness (including cost
effectiveness);
(xv) A summary record of notifications of summons
and successful prosecutions for breaches of the current environmental
protection/pollution control legislations, locations and nature of breaches,
investigation, follow-up actions taken and results;
(xvi) Review the practicality and effectiveness of
the EIA process and EM&A programme (for examples, a review of the
effectiveness and efficiency of the mitigation measures and the performance of
the environmental management system of the overall EM&A programme),
recommendations (for example, any improvement in the EM&A programme); and
(xvii) A conclusion to state the return of ambient and
/ or the predicted scenario as per EIA findings.
15.7
Data Keeping
15.7.1
No site-based documents
(such as monitoring field records, laboratory analysis records, site inspection
forms, etc.) are required to be included in the monthly EM&A reports. However, any such document shall be well kept
by the ET Leader and be ready for inspection upon request. All relevant
information shall be clearly and systematically recorded in the document. Monitoring data shall also be recorded in
electronic format, and the software copy must be available upon request. Data format shall be agreed with EPD. All documents and data shall be kept for at
least one year following completion of the construction contract.
15.8
Interim Notifications of
Environmental Quality Limit Exceedances
15.8.1
With reference to the Event
and Action Plan, when the environmental quality performance limits are
exceeded, the ET Leader shall immediately notify the IEC and EPD, as
appropriate. The notification shall be
followed up with advice to IEC and EPD on the results of the investigation,
proposed actions and success of the actions taken, with any necessary follow-up
proposals. A sample template for the
interim notifications is presented in
Appendix E.
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APPENDIX A
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Tentative
Construction Programme
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APPENDIX B
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Environmental Mitigation
Implementation Schedule
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APPENDIX C
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Project Organisation for
Environmental Works
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Project Organisation for
Environmental Works 
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APPENDIX D
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Sample Data Sheet for Monitoring
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Monitoring Location
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Details of Location
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Sampler Identification
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Date & Time of Sampling
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Elapsed-time
Meter Reading
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Start (min.)
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Stop (min.)
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Total Sampling Time (min.)
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Weather Conditions
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Site Conditions
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Initial Flow
Rate, Qsi
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Pi (mmHg)
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Ti (
C)
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Hi (in.)
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Qsi (Std.
m3)
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Final Flow
Rate, Qsf
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Pf (mmHg)
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Tf (
C)
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Hf (in.)
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Qsf (Std.
m3)
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Average Flow Rate (Std. m3)
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Total Volume (Std. m3)
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Filter Identification No.
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Initial Wt. of Filter (g)
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Final Wt. of Filter (g)
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Measured TSP Level (µg/m3)
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Data Sheet for TSP Monitoring
Name
& Designation Signature Date
Field Operator :
Laboratory Staff:
Checked by :
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Monitoring Location
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Description of Location
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Date of Monitoring
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Noise Meter Model/Identification
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Calibrator Model/Identification
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Measurement Start Time (hh:mm)
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Measurement Time Length (min.)
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Measurement
Results
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L90 (dB(A))
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L10 (dB(A))
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Leq (dB(A))
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No. of LV (Light Vehicle)
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No. of HV (Heavy Vehicle)
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Average Speed (km/h)
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Major Construction Noise Source(s) During
Monitoring
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Other Noise Source(s) During Monitoring
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Remarks
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Noise Monitoring Field Record Sheet
Name &
Designation
Signature Date
Recorded By:
Checked
By:
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Sampling equipment used:
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Dates
calibrated
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Landfill Gas Monitoring
Field Measurement Record Sheet
Name of construction
site:
Date of Measurement:
Monitoring of Confined Spaces/Excavation
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Sample Location
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Sampling Time
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Weather Condition
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Pressure (mbar)
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Flammable Gas (methane % or LEL)
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Carbon Dioxide (%)
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Oxygen (%)
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Temp (°C)
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Remark
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Field Technician: Checked
by:
Date: Date:
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APPENDIX E
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Sample Template for Interim
Notification
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Incident Report on Action Level or Limit Level Non-compliance
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Project
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Date
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Time
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Monitoring
Location
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Parameter
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Action &
Limit Levels
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Measured
Level
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Possible
reason for Action or Limit Level Non-compliance
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Actions
taken / to be taken
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Remarks
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Location Plan
Prepared
by :
Designation
:
Signature :
Date :