|
|
Agreement
No. CE 57/2001
Environmental
and Traffic Impact Assessment
Study
for
Fill
Bank at Tseung Kwan O Area 137
Environmental
Monitoring and Audit Manual
|
|
Project Consultancy Team:
CH2M HILL (China) Limited
in association
with
MVA Hong Kong Limited
ACL Asia Limited
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Civil Engineering Department
|
|
|
|
|
|
|
|
|
1.1
Background
1.1.1
An Environmental Impact Assessment (EIA) has been conducted
for the proposed fill bank development at Tseung Kwan O Area 137. Figure 1-1 shows
the location of the project site. Based
on the assessment results, a number of mitigation measures have been
recommended where necessary for implementation during the establishment,
operation and/or decommissioning phases of the fill bank development.
1.1.2
In accordance with the requirement under Section 4 of the EIA
Study Brief, this Environmental Monitoring and Audit (EM&A) Manual has been
prepared by the EIA Team to specify the recommended environmental monitoring
and audit requirements, where considered necessary for the concerned
environmental aspects, to ensure effective implementation of the recommended
environmental protection and pollution control measures.
1.1.3
This Manual provides systematic procedures for the carrying
out of recommended monitoring and auditing works for checking of potential
environmental impacts which may arise from the project. Mitigation measures
recommended in the EIA Report for each key environmental aspect are also
summarised and presented in this Manual.
1.1.4
The EM&A programme will be useful in providing a means to
verify the effectiveness and adequacy of the mitigation measures recommended in
the EIA such that additional mitigation measures or remedial action, if deemed
necessary, can be formulated during the lifetime of the fill bank project. The
recommended EM&A programme is to be carried out by an Environmental Team
(ET) formed before the commencement of the works.
1.1.5
Environmental regulations currently enforced in Hong Kong
pertaining to air quality, noise, water and waste, etc. and the recommendations
given in the EIA report have been observed in the preparation of this EM&A
Manual.
1.2
Objectives of this EM&A Programme
1.2.1
The main objectives of the EM&A programme include:
1. To provide a database on baseline environmental quality for subsequent
checking of any short or long term environmental impacts arising from the
project;
2. To provide information at an early stage for identification of
potential problem areas and formulation of additional environmental mitigation
measures where necessary should any of the environmental control measures or
practices fail to achieve the target standards;
3. To monitor the performance of the project from an environmental
viewpoint and the sufficiency and effectiveness of the implemented mitigation
measures;
4. To verify the environmental impacts predicted in the EIA Study for
the project;
5. To determine project compliance with relevant regulatory standards,
requirements and guidelines;
6. To take remedial action should unexpected problems or unacceptable
impacts are identified;
7. To provide baseline and compliance monitoring data to assist the
carrying out of effective environmental audits.
1.3
Content of this EM&A Manual
1.3.1
The recommended EM&A programme in this Manual contains the
following information:
1. Duties of the Contractor, the Engineer1 or Engineer’s
Representative (ER), the
Environmental Team (ET) and the Independent Environmental Checker (IC(E)) in
the environmental monitoring and audit programme;
2. Information on project organisation, work schedule and activities;
3. Information on the preliminary implementation programme of the fill
bank;
4. The recommended environmental monitoring and audit programme on
specific environmental parameters;
5. Definition of Action and Limit levels, and establishment of Event
and Action Plans;
6. Requirements of reviewing pollution sources and work procedures in
the event of non-compliance of the environmental criteria;
7. Requirements of presentation of environmental monitoring and audit
data and appropriate reporting procedures;
8. Record forms (Appendix I) to be adopted where applicable during the
establishment, operation and decommissioning phases of the Fill Bank
development.
1.3.2
For the Implementation Schedule of the environmental
mitigation measures required to be prepared under Section 4.3 of the EIA Study
Brief, please refer to Appendix 10-1 of the EIA report.
1.3.3
The EM&A Manual shall be regarded as an evolving document
that should be updated when necessary in order to maintain its relevance during
the detailed design stage and/or the establishment/operation/decommissioning
phases of the fill bank (e.g. when alternative monitoring locations are
proposed). The updated EM&A Manual
shall be submitted to the Engineer’s Representative (ER) and EPD for agreement.
2.1
The Subject Site and its Environs
2.1.1
Area 137 is located at the southern side of Tseung Kwan
O. The site will occupy an area of
approximately 104 hectares upon completion of the on-going reclamation works at
the northern side of the site by end of 2003.
The reclamation site has served as a public filling area since January
1997 to receive public fill generated from the construction industry. Location of the site is shown in Figure 1-1.
2.1.2
Existing landuses located in TKO within 3 km of the site are
all of industrial nature. TKO Industrial Estate, Fat Tong Chau (Junk Island)
and SENT landfill are located to the north of the site. To the east of the site is the hillside
along the eastern boundary of Clear Water Bay Country Park. TVB Broadcast and Production Centre is
located adjacent to the northern boundary of the site.
2.1.3
Existing residential developments and schools are all located
at further distances from the site. The
nearest existing residential development, Oscar By The Sea (OBS), is located at
some 3.2km from the boundary of the site.
Planned residential developments in Area 85 and Area 86 are also located
at more than 1.5km and 2.0km from the site, respectively. The first phase of these planned
developments are not anticipated to have population intake until 2006 according
to information provided by Planning Department.
2.1.4
Tseung Kwan O Tunnel is the existing strategic route linking
TKO with the Kowloon districts. To the
east of the TKO Tunnel lies the TKO Tunnel Road and Wan Po Road which is the
most direct access to the site at TKO Area 137. Po Lam Road is the other connection between TKO and Kowloon. However, it is a less direct route and lower
standard route than Tseung Kwan O Tunnel.
Po Lam Road is a single carriageway of three lanes along most of its
length, with various sections of four lanes, in particular at junction
approaches. Hang Hau Road provides a
convenient access from Tseung Kwan O to Sai Kung and Clear Water Bay. It is a local distributor with one lane in
each direction.
2.1.5
Figure 2-1 shows the area situated within 300m or 500m radius
of the site boundary as well as some representative uses along Wan Po Road.
2.1.6
The major committed transport infrastructure in TKO is the MTR
Tseung Kwan O Extension, which is scheduled to be operational in September
2002. The MTR provides an alternative
mode of transport to/ from the Kowloon districts and within TKO for the TKO
population. The Government has also
planned the Cross Bay Link and Western Coast Road which will become an
alternative major access route to/ from the area.
2.2
Project Design
Establishment, Operation
and Decommissioning Programme
2.2.1
Figure 2-2 presents a preliminary programme for the
establishment, operation and decommissioning phases of the fill bank.
2.2.2
Mobilisation and establishment works are planned to commence
in early October 2002 to prepare for intake of public fill. Public fill intake would commence in mid
October 2002 for stockpiling activities (Phase 1) to commence at the southern
side of the site. The remaining works
of the Contract CV/97/01 “TKO Port Development at Area 137 Stage 2 –
Construction of Seawalls and Reclamation” would be completed by end of 2003 for
stockpiling activities (Phase 2) to also proceed at the northern side of the
site from January 2004.
2.2.3
TKO Area 137 has been planned for longer-term industrial uses
commencing from mid/late 2007 under the latest programme. To make the site available for roads and
other serving construction, decommissioning of the fill bank at the northern
side of the site is planned to start early in January 2004. Early removal of the public fill would also
be beneficial in providing a steady and reliable supply of sorted fill material
to meet required quality to meet the programme of those reclamation projects
that have commenced from 2004. A
minimum area of approximately 55 hectares of land at the northern side of the
site would be cleared by September 2005 to allow infrastructure works to
commence to prepare for the future industrial uses from mid/ late 2007 in TKO
Area 137 planned under the latest programme.
Establishment Phase
2.2.4
The establishment phase will involve minor activities as the
reclamation site/ public filling area has been established for similar
activities. Existing site offices have
been established at the northern tip of the site, wheel washing facilities are
installed at the site exits, and temporary trapezoidal drainage channels have
been installed at the perimeter of the reclaimed land within which surcharge
mounds are stockpiled to enhance the soil consolidation process on the
reclaimed land. The works during the
establishment phase will mainly involve site clearance activities, fabrication
of machinery for the Construction and Demolition Material Sorting Facility
(C&DMSF) and steel structures for the barging point, and realignment of the
existing trapezoidal drainage channels to fit the fill bank design as the
stockpiling works proceed for controlling potential water quality impact during
the public fill stockpiling activities which will commence from the southern
side of the site.
Operational Phase
Fill Bank Design
2.2.5
Figure 2-3 presents a general layout of the existing reclaimed
land. Figure 2-4 presents the
preliminary design of the fill bank showing the stockpiling area, representative
fill bank profile when it is fully completed, location of the barging facility
and C&DMSF and alignment of the temporary stormwater drainage system to be
constructed/ modified from the existing trapezoidal drainage channels along the
perimeter of the site. Figure 2-5 presents a representative profile of the fill
bank when it is about half completed occupying the southern part of the
site. Figure 2-6 and Figure 2-7 show
the corresponding north-south cross section of the fill bank when it is fully
and half completed, respectively.
Figure 2-8 and Figure 2-9 present the preliminary design of the
C&DMSF and barging facility, respectively.
2.2.6
To accommodate a total quantity of 6 Mm3 public
fill, the fill bank would need to be filled up to a maximum height of
approximately +35mPD (i.e. about 30m above ground). The fill bank will be
constructed platform-by-platform, with compaction and application of adequate
load on required areas. The lateral
pressure induced and the slope stability and other engineering factors have
been carefully considered by CED in the detailed design of the fill bank
profile and the implementation will be closely monitored by CED. Measures
including the provision of temporary intercepting drains, hydroseeding,
coloured geo-textile matting and/or water spraying would be applied for slope
protection and reduction of dust emissions.
The layout of the temporary intercepting drains at the stockpiling area
could be altered from time to time to suit the stockpiling sequence to
effectively divert stormwater collected to the trapezoidal channels provided
along the perimeter of the fill bank.
2.2.7
In view of the proximity of the adjacent TVB Broadcast and
Production Centre, a buffer zone of 100m would be allowed between the edge of
the stockpile and the boundary of the production centre. Within this buffer zone, no dusty material
would be stockpiled. In addition, the
slope surface of the stockpile facing the production centre will be protected
to minimise any dust impact. A buffer
will also be provided between the stockpiling area and the coastline along the
eastern and southern side of the site, and between the stockpiling area and the
slope along the eastern boundary of the Clear Water Bay Country Park.
2.2.8
Capacity of the fill bank would be available in phases. The fill bank will receive public fill at
the southern part of the site commencing from mid October 2002. From October 2002 to December 2003 the
available public fill stockpiling capacity will be limited to about 2Mm3
at the southern part of the site. Upon
the completion of the ongoing reclamation works in end of 2003, the northern
portion of the site will also be made available for stockpiling of an
additional quantity of 4Mm3 public fill.
2.2.9
The C&DMSF will occupy a site area of about 2 hectares on
the eastern side of the site. A minimum buffer distance of 20m will be
maintained between the C&DMSF and the waterfront. Oversized C&D materials received at the fill bank by trucks
or barges will be broken down into specified size range. Imported materials that do not require
sorting (i.e. the materials are already sorted at the origins) could be
directly delivered to the stockpiling area after checking. Oversized material will be broken down into
specified size ranges. Limited quantity
of C&D waste separated from the public fill will be delivered offsite to
the nearby SENT landfill for disposal.
Fill Bank Operating
Hours
2.2.10 The
proposed fill bank will be open to the public from 8:00 a.m. to 9:00 p.m. daily
except during the Chinese New Year holidays, which is the same the operation
hours of the public filling area operated at TKO Area 137. This will provide a
convenient outlet of public fill for the construction industry and is
considered as an important measure to minimise the disposal of reusable fill
material to landfill or illegal dumping.
The barging point and the C&DMSF will be closed from 7:00p.m. to
8:00 a.m. daily and will prevent potential visual impact on sensitive receivers
from glare.
Public Fill Intake by
Barges
2.2.11 To
minimise the potential traffic and environmental impact associated with the
public fill delivery trucks going in and out of the proposed fill bank using
Wan Po Road, a barging facility will be established onsite to allow public fill
intake by barges as an alternative route to land-based transportation of public
fill via Wan Po Road. Through the
trip-ticket system, truckloads generated from Government/ Public Corporations’
contracts, except those generated within Tseung Kwan O which are expected to be
limited, will be diverted away from Wan Po Road. This will be achieved through designating the planned public
filling barging point at South East Kowloon (SEK) ex-Kai Tak Airport as the
public fill tipping location. As these
contracts in Kowloon and part of the New Territories will account for half of
the supply of public fill, this control measure will reduce the number of
truckloads using Wan Po Road from an average of about 2,000 truckloads per day
to an average of 1,000 truckloads per day.
This truckload volume would be below the average of about 1,200
truckloads per day encountered in the operation of the existing public filling
area at TKO Area 137.
Decommissioning Phase
2.2.12 Activities
carried out during the decommissioning phase will be the reverse of the
operational phase. Stockpiled materials
will be removed from the fill bank for delivery to reclamation sites mainly by
barges for reuse. To minimise the
potential cumulative environmental impact arising from the public fill delivery
traffic, all public fill removed from the fill bank will be by barges during
the period when decommissioning overlap with the operational phase (i.e. from
January 2004 to December 2004).
2.2.13 Between
January 2005 to December 2007, use of barges in delivery of stockpiled public
fill will also be maximised but a land-based route will be retained to allow
the effective delivery of fill material to land-based project sites (e.g. earth
filling project sites) and to nearby construction sites in the area where
public fill are demanded. This will
avoid double handling of the material by barges and trucks offsite. At least 90% of stockpiled public fill is
going to be transported off the site by barges, leaving only 10% of material to
be transported by trucks. The maximum
public fill delivery truckloads of the fill bank will be controlled to 200
vehicles/day and 30 vehicles/hour during the decommissioning phase through
agreeing the public fill dispatch rate by trucks with the users of the public
fill.
2.3
Environmental Monitoring and Audit
Requirements
2.3.1
The EM&A programme for this study, as recommended in the
EIA, cover the following environmental aspects during the establishment,
operation and decommissioning phases of the fill bank:
§
Fugitive Dust;
§
Noise generation from onsite
activities;
§
Water Quality; and
§
Landscape and Visual.
2.3.2
This EM&A Manual has also given recommendations on
landfill gas monitoring and protective measures for addressing potential
landfill gas/ leachate migration and exposure concern.
3.1.1
Involvement of relevant parties in a collaborative and
interactive manner is essential for the implementation of the recommended
EM&A programme. The key parties in
an EM&A programme include:
§
Civil Engineering Department (CED) (Project Proponent);
§
Environmental Protection Department (EPD)
(Environmental Regulations Enforcer);
§
the Engineer or the Engineer’s representative (ER)
(i.e. Engineers from CED if the fill bank design and/or implementation are to
be implemented by in-house staff of CED);
§
the Contractor of the fill bank;
§
the Environmental Team (ET);
§
the Independent Checker (Environment) (IC(E))
Environmental Team
3.1.2
An Environmental Team (ET) shall be appointed to carry out the
recommended EM&A works for the fill bank project. The ET shall not be an associated company of the Contractor. The ET Leader
shall plan, organise and manage the implementation of the EM&A programme,
and to ensure that the EM&A works are undertaken to the required
standards. The ET Leader shall have relevant
professional qualifications in Environmental Sciences or Environmental
Engineering, and possesses at least 7 years experience in EM&A and/ or
environmental management.
3.1.3
The ET Leader shall be responsible for the implementation of
the EM&A programe in accordance with the EM&A requirements specified in
this Manual. The ET Leader shall keep a
contemporaneous log-book of each and every instance or circumstance or change
of circumstances which may affect the EIA and each and every non-compliance
with the Environmental Permit or the recommendations in the EIA report. This log-book shall be kept readily
available for inspection by the IC(E), and Director of Environmental Protection
(DEP) or his authorized officers. The
ET shall not be an associated body of the IEC in the project.
3.1.4
Sufficient and suitably qualified professional and technical
staff shall be employed by the respective parties to ensure full compliance
with their duties and responsibility, as required under the EM&A programme
for the duration of the project. The ET shall not be in any way an associated
body of the Contractor. The ET shall be under the supervision of the ET Leader
in fulfilling the EM&A duties specified in this Manual. The board categories of woks of the ET
comprise the followings:
1. Sampling, analysis and statistical evaluation of monitoring
parameters with reference to the EIA study recommendations and requirements;
2. Environmental site surveillance;
3. Audit of compliance with environmental protection, and pollution
prevention and control regulations;
4. Monitor the implementation of environmental mitigation measures;
5. Monitor compliance with the environmental protection
clauses/specifications in the Contract;
6. Review establishment, operation and decommissioning programmes of the
fill bank and provide comments as necessary;
7. Review work methodologies which may affect the extent of
environmental impact during the establishment, operation and decommissioning
phases and comment as necessary;
8. Complaint investigation, evaluation and identification of corrective
measures;
9. Liaison with the Project Independent Checker (Environmental) (IC(E))
on all environmental performance matters, and timely submission of all relevant
EM&A proforma for IC(E)’s approval;
10. Advice to the Contractor on environmental improvement, awareness,
enhancement matters, etc., on site; and
11. Timely submission of the EM&A report to the Project Proponent
and the DEP.
3.1.5
In the event of any exceedance in action/ limit levels, the ET
shall immediately inform the IC(E), Engineer/ ER and the Contractor so that
appropriate remedial action can be undertaken by the Contractor promptly. The ET is also responsible for the
preparation of the monthly EM&A reports for submission to IC(E), the
Contractor and the Engineer/ ER, and through the Engineer/ ER to EPD. The ET shall assist the Contractor and the
Engineer/ ER in formulating any necessary corrective actions and/ or additional
mitigation measures, and liasing with relevant Government Departments where
necessary.
Independent Checker (Environment)
3.1.6
The Independent Checker (Environment) (IC(E)) shall advise the
ER on environmental issues related to the project. The IC(E) shall not be in any way an associated body of the
Contractor or the ET for the Project. The IC(E) shall be empowered to audit
from an independently viewpoint the environmental performance during the
establishment, operation and decommissioning of the fill bank. The IC(E) shall be a person who has at least
7 years’ experience in EM&A or environmental management. The IC(E) shall be responsible for the
duties defined in the Environmental Permit and this EM&A Manual, and shall
audit the overall EM&A programme, including the implementation of all
environmental mitigation measures, submissions required in this EM&A
Manual, and any other submissions required under the Environmental Permit. The IC(E) shall be responsible for verifying
the environmental acceptability of permanent and temporary works, relevant
design plans and submissions under the Environmental Permits. The IC(E) shall verify the log-book prepared
and kept by the ET Leader. The IC(E)
shall notify DEP by fax, within 24 hours of each and every occurrence, change
of circumstances or non-compliance with the EIA Report or the Environmental
Permit, which might affect the monitoring or control of adverse environmental
impact.
3.1.7
The main duty of the IC(E) is to carry out independent
environmental audit of the project. This shall include, inter alias, the
followings:
1. Review and audit in an independent, objective and professional
manner in all aspects of the EM&A programme;
2. Validate and confirm the accuracy of monitoring results;
appropriateness of monitoring equipment, monitoring locations with reference to
the locations of the nearby sensitive receivers, and monitoring procedures;
3. Carry out random sample check and audit on monitoring data and
sampling procedures, etc;
4. Conduct random site inspection;
5. Audit the EIA recommendations and requirements against the status of
implementation of environmental protection measures on site;
6. Review the effectiveness of environmental mitigation measures and
project environmental performance;
7. On a need basis, verify and certify the environmental acceptability
of the construction methodology (both temporary and permanent works), relevant
design plans and submissions under the environmental permit. Where necessary,
the IC(E) shall agree in consultation
with the ET Leader and the Contractor the least impact alternative;
8. Verify investigation results of complaint cases and the
effectiveness of corrective measures;
9. Verify EM&A report submitted and certified by the ET Leader; and
10. Feedback audit results to ET/CED/ER by signing according to the
Event/ Action Plans specified in this EM&A Manual.
The Contractor
3.1.8
The Contractor is responsible for providing requested
information to the ET in the event of any exceedance in the environmental
criteria (action/ limit levels) specified in this Manual or other current
environmental standards, and to rectify unacceptable practices. The Contractor shall discuss with the ET,
IC(E) and ER on any additional mitigation measures identified to be required by
the ET and implement the agreed measures to alleviate any identified
environmental impact to acceptable levels.
The Contractor shall report to the ET on the actions taken targeting at
environmental protection for inclusion in the monthly report to be prepared by
the ET.
CED
3.1.9
Civil Engineering Department is the project proponent in this project
and shall hold ultimate responsibility for the project. CED shall be the decision-making Authority
and shall liaise with EPD on environmental issues associated with the project.
EPD
3.1.10 EPD
is the statutory enforcement body for environmental protection matters in Hong
Kong. Apart from the provision of mandatory environmental standards, EPD also
forms consultation board for environmental issues arising from the project.
The Engineer or the Engineer’s
Representative
3.1.11 The
Engineer, or the ER shall be responsible for overseeing the operations of the
Contractor, the ET. He shall advise,
co-ordinate and give instruction when appropriate for efficient implementation
of any specific environmental mitigation measures identified to be required by
the contractor, and/or outstanding EM&A works required to be carried out by
ET in consultation with the IC(E). The
ER shall supervise the Contractor’s activities and ensure that the requirements
in the EIA Report and EM&A Manual are fully complied with. He shall inform the Contractor when action
is required to reduce impacts in accordance with the Event/ Action Plans. He
shall review the EM&A Reports submitted by the ET and follow up the
recommendations. He shall ensure that
the Contractor is implementing the environmental controls and mitigation
measures as set out in the EIA report and EM&A Manual, as well as
additional measures necessary for compliance with the relevant environmental
standards.
3.1.12
CED will play the role of Engineer or the ER should the detailed
design and implementation of the fill bank project is to be implemented by
in-house staff of CED.
4.1
Air Quality Parameters
4.1.1
Monitoring and audit of Total Suspended Particulate (TSP) levels
shall be carried out by the ET during the establishment, operation and
decommissioning of the fill bank to ensure that any deteriorating air quality
could be readily detected and timely action taken to rectify the situation.
4.1.2
24-hour and 1-hour TSP levels shall be measured according to
the recommended programme. 24-hour and
1-hour TSP levels shall be measured by following the standard high volume
sampling method as set out in Title 40 of the Code of Federal Regulations,
Chapter 1 (Part 50), Appendix B.
4.1.3
Upon approval of the ER on the advice of EPD, 1-hour TSP
levels can alternatively be measured by direct reading methods which are
capable of producing comparable results as that by the high volume sampling
method, to indicate short event impacts.
However, the ET should submit sufficient information to the IC(E) and
the ER to prove that the instrument is capable of achieving a comparable result
as that a High Volume Sampler (HVS) and maybe used for 1-hr sampling.
4.1.4
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, and other special phenomena and
work progress of the concerned site etc. shall be recorded down in details,
where appropriate. A sample data sheet
is shown in Figure 4-1.
4.2
Monitoring Equipment
4.2.1
Regarding the high volume sampling method, HVS in compliance
with the following specifications shall be used for carrying out the 1-hour and
24-hour TSP monitoring:
1. 0.6-1.7 m3/min. (20-60 SCFM) adjustable flow range;
2. Equipped with a timing/control device with +/- 5 minutes accuracy
for 24 hours operation;
3. Installed with elapsed-time meter with +/- 2 minutes accuracy for 24
hours operation;
4. Capable of providing a minimum exposed area of 406 cm2
(63 in2);
5. Flow control accuracy: +/- 2.5% deviation over 24-hr sampling
period;
6. Equipped with a shelter to protect the filter and sampler;
7. Incorporated with an electronic mass flow rate controller or other
equivalent devices;
8. Equipped with a flow recorder for continuous monitoring;
9. Provided with a peaked roof inlet;
10. Incorporated with a manometer;
11. Able to hold and seal the filter paper to the sampler housing at
horizontal position;
12. Easy to change the filter; and
13. Capable of operating continuously for 24-hr period.
4.2.2
If the
ET proposes to use a direct reading dust meter to measure 1-hr TSP levels, he
shall submit sufficient information to the IC(E) to prove that the instruments
is capable of achieving a comparable result as that the HVS and may be used for
the 1-hr sampling. The instrument shall also be calibrated regularly, and the
1-hr sampling shall be determined periodically by HVS to check the validity and
accuracy of the results measured by direct reading method.
4.2.3
During the course of the project, the ET is responsible for
provision of the monitoring equipment. He shall ensure that sufficient number
of HVSs with an appropriate calibration kit, and direct reading dust meters are
available for the carrying out of baseline monitoring, regular impact
monitoring and ad hoc monitoring.
4.2.4
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.
4.2.5
Initial calibration of HVSs shall be conducted upon
installation and thereafter 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
IC(E). All the data should be converted
into standard temperature and pressure condition.
4.2.6
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 down in the data sheet given in Figure 4-1.
4.2.7
Wind data monitoring equipment shall also be provided and set
up at a conspicuous location for logging wind speed and wind direction near to
the dust monitoring locations. The
location for equipment installation shall be proposed by the ET and agreed with
the ER and IC(E). For installation and
operation of wind data monitoring equipment, the following points shall be
observed:
1. The wind sensors should be installed on masts at an elevated level
10m above ground so that they are clear of obstructions or turbulence caused by
the buildings;
2. The wind data should be captured by a data logger and to be
downloaded for processing at least once a month;
3. The wind data monitoring equipment should be re-calibrated at least
once every six months; and
4. Wind direction should be divided into 16 sectors of 22.5 degrees
each.
4.2.8
In exceptional situations, the ET may propose alternative
methods to obtain representative wind data upon approval from the ER and
agreement from the IC(E).
4.3
Laboratory Measurement / Analysis
4.3.1
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.
4.3.2
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 IC(E) and the
measurement procedures shall be witnessed by the IC(E) and the ER The ET shall provide the ER with one copy of
the Title 40 of the Code of Federal Regulations, Chapter 1 (Part 50),
Appendix B for his reference.
4.3.3
Filter paper of size 8”x10” shall be labelled before
sampling. It shall be a clean filter
paper with no pin hole, and shall be conditioned in a humidity controlled
chamber for over 24-hr and be pre-weighed before use for the sampling.
4.3.4
After sampling, the filter paper loaded with dust shall be
kept in a clean and tightly sealed plastic bag. The filter paper is then
returned to the laboratory for reconditioning in the humidity controlled
chamber followed by accurate weighing by an electronic balance with a readout
down to 0.1 mg. The balance shall be regularly
calibrated against a traceable standard.
4.3.5
All the collected samples shall be kept in a good condition
for 6 months before disposal.
4.4
Proposed Monitoring Locations
4.4.1
The air quality impact assessment presented in the EIA report indicated
that the nearby air sensitive receivers (ASRs) would not be subjected to
adverse dust impact among all phases of the project when standard dust
mitigation measures are properly applied onsite. The dust mitigation measures have been recommended and shall be
implemented by the Contractor in accordance with the requirements under the Air
Pollution Control (Construction Dust) Regulation. The contractor shall be responsible for the design and
implementation of the dust mitigation measures.
4.4.2
Figure 4-2 shows the locations of the proposed dust monitoring
locations (A1 and A2) identified at this early planning stage. The appointed ET may like to propose
alternative monitoring locations taking into consideration of the latest
status, availability and/or accessibility of the various possible monitoring
locations. The alternative monitoring
locations proposed by the ET shall be approved by the ER and agreed by IC(E).
4.4.3
When alternative monitoring locations are proposed, the
following criteria should be followed as far as practicable:
·
At the site boundary or such locations
close to the major dust emission sources;
·
Close to the sensitive receptors; and
·
Take into account the prevailing
meteorological conditions.
4.4.4
The ET shall agree with the ER in consultation with the IC(E)
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 meter 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 metres of separation
from walls, parapets and penthouses is required for rooftop samplers;
·
A minimum of 2 metre 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 metres
from the dripline;
·
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; and
·
A secured supply of electricity is
needed to operate the samplers.
4.5
Baseline Monitoring
4.5.1
Baseline monitoring shall be carried out by the appointed ET in
at least one of the recommended monitoring stations for at least 14 consecutive
days to obtain daily 24-hr TSP samples.
1-hr sampling shall also be done at least 3 times per day during daytime
while the highest dust impact would be anticipated during the operational phase
of the fill bank. One of the three
1-hour TSP monitoring shall cover the fill bank operational peak predicted at
11:00a.m. to 12:00 hour. The ET should
inform the IC(E) of the baseline monitoring programme before commencement such
that the IC(E) can conduct on-site audit when the baseline monitoring commence
to check for the appropriateness of the adopted methodology.
4.5.2
During the baseline monitoring, there should not be any dust
generation construction activities in the vicinity of the monitoring stations
arising from the proposed fill bank project.
4.5.3
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 locations shall be approved by the ER and agreed with IC(E).
4.5.4
If the ET considers that the ambient conditions have been
changed during any stage of the operation/ decommissioning phase, and a repeat
of the baseline monitoring is considered necessary for obtaining the updated
baseline levels, the monitoring should be carried out at times when the
contractor’s activities are not generating dust in the proximity of the
monitoring stations. Should change in ambient conditions be determined, the
baseline levels and, in turn, the air quality criteria (action/ limit levels),
should be revised. The revised baseline
levels and air quality criteria should be agreed with the IC(E) and EPD.
4.6
Impact Monitoring
4.6.1
The ET shall carry out impact monitoring during the course of
the project at the recommended dust monitoring stations during the
establishment, operation and decommissioning phases. For regular impact monitoring, a sampling frequency of at least
one in every six-days shall be followed at the selected monitoring stations for
24-hr TSP monitoring. The specific time
to start and stop the 24-hr TSP monitoring shall be clearly defined and be
strictly followed by the operator.
Before commencement, the ET Leader shall inform the IC(E) of the impact
monitoring programme such that the IC(E) can conduct on-site audit to ensure
accuracy of the impact monitoring results.
4.6.2
For 1-hr TSP monitoring, a sampling frequency of at least
three times per day in every six-days should be undertaken during the hours
when the highest dust impact is predicted to occur based on the nature of the construction
works. The fill bank peak operating
hour expected to occur at approximately 11:00a.m. to 12:00 hour shall be
covered in the 1-hour TSP monitoring.
The 1-hr TSP monitoring can be undertaken on the same day as the 24-hr
TSP monitoring.
4.6.3
In case of non-compliance with the air quality criteria, more
frequent monitoring exercise, as specified in the following section, shall be
conducted within 24 hours after the result is obtained. This additional monitoring shall be
continued until the excessive dust emission or the deterioration in air quality
is rectified.
4.7
Event and Action Plan for Air Quality
4.7.1
The baseline monitoring results 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
4‑1 shows the air quality criteria, namely Action and
Limit levels to be used. Should non-compliance
of the air quality criteria occurs, the ET shall undertake the relevant action
in accordance with the Action Plan in Table
4‑2.
Table 4‑1 Action and Limit Levels
for Air Quality
|
Parameters
|
Action
|
Limit
|
|
24 Hour TSP Level in mg/m³
|
For baseline level £ 200 mg/m³, Action level = (Baseline level x 1.3 + Limit level) /2;
For baseline level > 200 mg/m³, Action level = Limit level;
|
260 mg/m³
|
|
1 Hour TSP Level in mg/m³
|
For baseline level £ 384 mg/m³, Action level = (Baseline level x 1.3 + Limit level) /2;
For baseline level > 384 mg/m³, Action level = Limit level;
|
500mg/m³
|
Table 4‑2 Event/Action Plan for
Air Quality
|
ACTION LEVEL
|
|
EVENT
|
ET
Leader
|
IC
(E)
|
ER
|
CONTRACTOR/
|
|
ACTION LEVEL
|
|
Exceedance for one sample
|
1.
Identify source, investigate the causes of
exceedance and propose remedial measures
2.
Inform ER, IC(E) and Contractor
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, investigate the causes of
exceedance and propose remedial measures
2.
Inform IC(E) and Contractor
3.
Repeat measurements to confirm findings
4.
Increase monitoring frequency to daily
5.
Discuss with IC(E) and Contractor on remedial
actions
6.
If exceedance continues, arrange meeting with
IC(E) and ER
7.
If exceedance stops, cease additional
monitoring
|
1.
Checking 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.
Supervisor implementation of remedial measures
|
1.
Confirm receipt of notification of failure in
writing
2.
Notify Contractor
3.
Ensure remedial measures properly implemented
|
1.
Submit proposals for remedial actions to IC(E)
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 and EPD
3.
Repeat measurement to confirm finding
4.
Increase monitoring frequency to daily
5.
Assess effectiveness of Contractor's remedial
actions and keep IC(E), EPD and ER informed of the results
|
1.
Checking 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.
Supervisor 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 IC(E) within 3 working days
of notification
3. Implement the agreed proposals
4. Amend proposal if appropriate
|
|
Exceedance for two or more consecutive samples
|
1.
Identify source, investigate the causes of exceedance
and propose remedial measures
2.
Notify IC(E), ER, Contractor and EPD
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 IC(E) and ER to discuss
the remedial actions to be taken
7.
Assess effectiveness of Contractor's remedial
actions and keep IC(E), 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 failure in
writing
2.
Notify Contractor
3.
In consultation with the IC(E), 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 remedial actions
|
1.
Take immediate action to avoid further
exceedance
2.
Submit proposals for remedial actions to IC(E)
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
|
4.8
Dust Mitigation Measures
4.8.1
The EIA report has recommended various dust control/
mitigation measures in accordance with the requirements of the Air Pollution
Control (Construction Dust) Regulation. The key dust control measures that
are considered most relevant during the establishment, operational and
decommissioning phases are highlighted below.
Establishment Phase
4.8.2
The dust control measures required under the Air
Pollution Control (Construction Dust) Regulation should be
implemented. Working areas where excavation
or earthmoving operation shall be sprayed with water or a dust
suppression chemical. Any stockpiling
of excavated material shall be covered by impervious sheeting or sprayed with
water or a dust suppression chemical. The
following site facilities shall also be provided as part of the establishment
to prevent potential dust impact during the fill bank operation and
decommissioning:
Erection
of site hoarding of at least 2.4m high (from ground level) along the northern
side of the site boundary except at the site entrance/exit location;
Installation
of vehicle wheel washing facilities including a high pressure water jet
provided at designated vehicle exit points;
Construction
of additional temporary stormwater system at required locations;
Paving
the designated main haul roads with concrete, bituminous materials, hardcores
or metal plates;
The
machinery of the C&DMSF shall be enclosed in a shelter and equipped with
proper dust filtration system (e.g. bag filters);
The
C&DMSF shall also be designed to facilitate the loading of fill material
from public fill delivery trucks and with minimized drop height. At the
C&DMSF, the storage areas shall at least be enclosed on three sides;
In
designing the barging point, the drop height from the barge to vehicles and
vice versa shall be minimized;
The
tipping hall for transfer of public fill from trucks to barges at the barging
point shall be partially enclosed
Operational Phase
4.8.3
Any works that involve the stockpiling of dusty materials are
regulated under the Air Pollution Control
(Construction Dust) Regulation as regulatory work. In accordance with the requirements of the Air Pollution Control (Construction Dust)
Regulation, sufficient dust control/ mitigation measures shall be
implemented to ensure full protection of the nearby ASRs. The dust control measures that are
considered to be particularly relevant to the operation (and decommissioning)
of the fill bank are summarised below.
Site Haul Road
4.8.4
Public fill delivery trucks entering/ leaving TKO Area 137
shall be required to follow the planned
main haul route that is covered with concrete, bituminous materials, hardcores
or metal plates. The main haul route
provided for regular transport of public fill from the barging point to the
C&DMSF shall also be constructed with similar material to minimise dust
emissions. The buffer distance between
the designated haul roads and the nearest ASRs shall be maximised. Water lorries and/or road sweepers shall be
provided and used in dust suppression.
Truck speed shall be controlled to within 10km/hr. Truck drivers using the fill bank should be
checked to have a valid dumping licence.
Loading/
unloading of Public Fill
4.8.5
All dusty fill material shall be sprayed with water or a dust
suppression chemical prior to loading, unloading or transfer (transfer of fill
material between trucks, barges, C&DMSF and the stockpiles) so as to
maintain the fill material wet, except for situations where the moisture
content of the dusty material is a matter of concern. Frequent water (at least three times per day) of the worksites
with active dusty operations is recommended.
The frequency shall be increased when the weather is dry.
4.8.6
Loading of public fill delivered by barges to the site shall
be sprayed with water at the material landing point to minimize dust
emission. The public fill is expected
to be dampen when the material is first loaded from trucks to the barges at the
public filling barging point.
Therefore, any mist spraying applied should only dampen the dusty
material and overwatering should be avoided.
4.8.7
The machinery of the C&DMSF shall be fully enclosed and
provided with proper dust filtration system to alleviate dust emission. The C&DMSF shall also be designed to
facilitate the loading of fill material from public fill delivery trucks with
minimized drop height. At the
C&DMSF, temporary storage of dusty material shall be sprayed with water and
the storage area shall be at least enclosed on three sides. Storage time of pre-sorted and sorted
materials and waste should be minimised.
Over-sized material subject to crushing shall also be sprayed with water
before being crushed to minimize dust emission.
Site Entrance/
Exit
4.8.8
Vehicle washing facilities including high pressure water jet
installed at the existing exit shall be maintained and operated by designated
staff to ensure that these dust control measures are being used. Before leaving the fill bank site, every
vehicle shall be washed to remove any dusty materials from its body and wheels.
4.8.9
Trucks carrying dusty load entered to the site shall be
sprayed with water once the impervious sheeting covering the load is
removed.
Stockpiling of
Public Fill
4.8.10
A buffer zone of at least 100m shall be maintained between the
edge of the public fill stockpiling area and the nearest ASRs at the TKO
Industrial Estate. Within the buffer
zone, no dusty material shall be stockpiled and no loading/ unloading and
similar activities should be allowed. Stockpiling activities at the fill bank
shall be administrated by the contractor with care in proper manner to minimise
dust emissions from loading/ unloading activities and wind erosion.
4.8.11
Public fill at the stockpiling area should be handled with
care in proper manner that would not result in segregation, deterioration,
erosion or instability of the material, especially for the stockpiling surface
facing to the north of the site.
4.8.12
The portions of site and stockpiling height allocated and
allowed by the project engineers for stockpiling of public fill shall be
followed in the daily operation of the fill bank. Temporary slope surfaces shall be covered with tarpaulin sheet or
other impermeable sheeting, sprayed with water or a dust suppression chemical,
or protected by other methods approved by CED.
The amount of mist spraying should be just enough to dampen the material
surface without over-watering, which could result in unnecessary surface water
runoff. Final slope surfaces,
especially those facing to the north of the site, shall be treated by
compaction, followed by hydroseeding, vegetation planting or sealing with
shotconcrete, latex, vinyl, bitumen, or other suitable surface stabiliser
approved by CED to prevent the washing away of stockpiled material.
Transfer of Fill
Material with Belt Conveyor System
4.8.13
Belt conveyor systems used for transfer of fill material at
the C&DMSF shall be enclosed on top and 2 sides. Every transfer point between any two conveyors shall be totally
enclosed.
4.8.14
An effective belt scraper or equivalent device shall be
installed at the head pulley of every belt conveyor to dislodge fine particles
that may adhere to the belt surface, and to reduce carrying back of fine
particles on the return belt. The belt
scraper or equivalent device shall be equipped with bottom plates or other
similar means to prevent falling of material from the return belt. Every stockpiling belt conveyor shall be
provided with a mechanism to adjust its level such that the vertical distance
between the belt conveyor and the material landing point is maintained at no
more than 1m. Dusty material loaded
from a belt conveyor outlet to stockpiles, storage bins, trucks, barges and
other open areas shall be sprayed with water or a dust suppression chemical.
General Site
Management
4.8.15
Appropriate working methods should be devised and arranged to
minimise dust emissions and to ensure any installed air pollution control
system and measures are operated and/or implemented in accordance with their
design merits. In the event of
malfunctioning of any control system or equipment, the relevant dusty
activities shall stop until the relevant control system or equipment are
restored to proper functioning.
Frequent mist
spraying should be applied on dusty areas.
The frequency of spraying required will depend upon local meteorological
conditions such as rainfall, temperature, wind speed and humidity. The amount of mist spraying should be just
enough to dampen the material without over-watering, which could result in
unnecessary surface water runoff.
Decommissioning Phase
4.8.16
The dust control measures recommended for the operational
phase shall continue to be applicable during the decommissioning phase of the
project. For excavation activities and
removal of fill material, the material handled shall also be sprayed with water
or a dust suppression chemical before and after the operation so as to maintain
the entire surface wet. The contractor
shall implement these measures in accordance with the requirements of the Air Pollution Control (Construction Dust)
Regulation. In designing the barging
point, the vertical distance between the barges and the unloading platform at
the barging point shall be minimized to reduce dust generation. The tipping hall at the barging point shall
be enclosed on top and three sides. All
public fill delivery trucks carrying dusty load leaving the fill bank to Wan Po
Road shall be required to be covered entirely by clean impervious sheeting in
prior to ensure that the dusty materials do not leak from the vehicles.
4.8.17 The
implementation schedule for the mitigation measures recommended above for the
establishment, operation and decommissioning phases is presented in Appendix
10-1 of the EIA Report. The Contractor
shall be responsible for the design and implementation of these measures. If the above measures are not sufficient to
restore any monitored air quality to acceptable levels. Upon the advice and
discussion with the ET, IC(E) and ER, the ET shall propose some other mitigation
measures for implementation by the Contractor.
5.1
Introduction
5.1.1
Given the vast distance separation between the Noise Sensitive
Receivers (NSRs) and the fill bank site, the construction/ fixed noise impact
assessment revealed that noise generated from onsite activities would satisfy
the noise criteria specified in the relevant Technical Memoranda at the NSRs. Nevertheless, noise management measures have
been recommended to be implemented onsite as good site practices. To check for the implementation of these
measures, the ET shall include the checking on the implementation of noise
control measures by the contractor in the regular site environmental audit.
5.2
Environmental Audit
5.2.1
As described in Section 9 of the Manual, the ET leader is
responsible for formulation of the environmental site inspection, deficiency
and action reporting system, and for carrying out site inspections under the
EM&A Programme. The ET shall check
for the implementation of the noise control measures agreed to be implemented
by the contractor as good site practices in his regular site inspections,
including the following measures as specified in the Implementation Schedule:
During the Establishment
Phase
(i)
All construction works will be carried
out during the non-restricted hours (i.e. 7:00 a.m. to 7 p.m. on weekdays other
than general holidays); without a valid Construction Noise Permit (CNP)
issued by the Authority under the Noise Control Ordinance
(ii)
Before the commencement of any work
that may generate a significant noise impact, the Contractor shall submit to
the Engineer for approval the method of working, equipment and sound-reducing
measures (e.g. use of silenced type of equipment, etc.) intended to be used;
During the Operational and
Decommissioning Phases
(iii)
The operating hours of the fill bank
shall be restricted to 8:00 a.m. to 9:00 p.m.;
(i)
The operating hours of
the barging point and the C&DMSF within the fill shall be restricted to
8:00 a.m. to 7:00 p.m.;Good Site Practices and Noise Management
(iv)
the Contractor, if any, shall
comply with and observe the Noise Control Ordinance (NCO) and its
(v)
Before the commencement of any work
that may generate a significant noise impact, the Contractor shall submit to
the Engineer for approval the method of working, equipment and sound-reducing
measures (e.g. use of silenced type of equipment, etc.) intended to be used;
(vi)
The noise standards specified in the Technical
Memorandum for the Assessment of Noise From Places Other Than Domestic
Premises, Public Places or Construction Sites shall be met;
5.2.2
To gain objective data as part of the environmental audit, the
ET shall carry out noise monitoring onsite on a monthly basis during the
regular site inspections. Figure 5-1
shows a sample data record sheet for reference. The noise monitoring data gained will be useful in allowing the
ET and IC(E) to identify precisely any significant change in noise levels at
the measurement point such that significant noise levels can be identified, and
measures taken where necessary to minimize the noise generation as good site
practices.
5.2.3
The noise measurement points shall be proposed by the ET
leader taking into the location of the work areas and dominant noise source(s)
for agreement with the IC(E) prior to regular noise monitoring at the agreed
positions. Near field measurements
should be avoided. Measurements of the
LAeq noise levels shall be made over a 30-minute period. LA90 and LAl0 noise
levels shall also be recorded for the same measurement period. Given that the nearest Noise Sensitive
Receivers are located to the northern and western sides of the fill bank, it is
recommended that the noise monitoring shall be selected at assessment points
each along the northern and western boundaries of the site.
5.2.4
Noise measurements should be made by the ET onsite in
accordance with standard acoustical principles and practices in relation to
weather conditions. Measurements should not be made in the presence of fog,
rain, wind with a steady speed exceeding 5 m/s or wind with gust exceeding 10
m/s.
5.2.5
As referred to in the Technical Memorandum issued under the Noise
Control Ordinance (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 of 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 if the calibration level from before and after the noise
measurement agree to within 1.0dB.
6.1
Landfill Gas Monitoring Requirements
6.1.1
The requirement to carry out periodic/ routine monitoring by
the Contractor’s Safety Officer/ Supervisor during ground works, in all excavations,
and works within confined spaces if any shall be specified in the contract
document. A properly-trained Safety
Officer/ Supervisor shall be recruited by the site contractor who should be
present onsite throughout the periods when there are any excavation works
undertaken within/ near the consultation zone of the SENT landfill which has
the potential for the presence of landfill gas, and the risk of explosion or
asphyxiation as recommended in the EIA report.
6.1.2
The Safety Officer/ Supervisor should be provided with an
intrinsically safe portable instrument(s), appropriately calibrated and capable
of measuring the gases in the ranges indicated as given in Table 6‑1.
Table 6‑1 Details
of LFG Monitoring Equipment Requirement
|
Gas
|
Range of Detection
|
|
Methane
|
0-100%
LEL and 0-100% v/v
|
|
Carbon
dioxide
|
0-100%
|
|
Oxygen
|
0-21%
|
|
Others
|
Unit/Range of Detection
|
|
Barometric
pressure
|
mBar
(absolute)
|
|
Gas
pressure (relative to atmosphere)
|
Pascals
|
|
Temperature
|
0-100
°C
|
6.1.3
The landfill gas monitoring instrument shall:
·
Where possible, comply with BS6020 and
be approved by BASEEFA as intrinsically safe, suitable for use in a Zone 2 area
to BS5345;
·
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 fro spot sampling, when it should be capable of operating by
means of an aspirator or pump;
·
Have low battery, fault and over range
indication incorporated; and
·
Store monitoring date, and shall be
capable of being down-loaded directly to a PC
6.1.4
The monitoring equipment shall alarm (both audibly and
visually) in the event that the concentrations of the following area exceeded:
·
Methane – higher than 10% LEL
·
Carbon dioxide – higher than 0.5%
·
Oxygen – lower than 18% by volume
6.1.5
An appropriate LFG monitoring programme should be formulated
by the Safety Officer/ Supervisor or by any appropriately qualified person,
where necessary, taking into account the locations of the work areas. Periodic/ routine monitoring should be
conducted during ground-works, in all excavations, and works within confined
spaces if any.
6.2
Landfill Gas Limit Level and Action
Plan
6.2.1
An action plan specifying the limit level is recommended as
shown in Table
6‑2.
Table 6‑2 Action Plan - LFG
Monitoring During the Construction Stage
|
Parameter
|
Measured Level
|
Action
|
|
Methane (CH4)
|
>10% LEL
|
Post “No Smoking” signs
Prohibit hot works
Ventilate to restore CH4
to below 10% LEL
|
|
|
>20% LEL
|
Stop works
Evacuate personnel
/prohibit entry
|
|
Carbon Dioxide (CO2)
|
>0.5%
|
Ventilate to restore CO2
to less than 0.5%
|
|
|
>1.5%
|
Stop works
Evacuate personnel/
prohibit entry
Increase ventilation to restore
to less than 0.5%
|
|
Oxygen (O2)
|
<19%
|
Ventilation trench/ void
to restore O2 level to more than 19%
|
|
|
<18%
|
Stop works
Evacuate personnel/
prohibit entry
Increase ventilation to
restore O2 to more than 19%
|
6.3
Landfill Gas Protective Measures for works within the SENT
landfill Consultation Zone
6.3.1
As a landfill gas migration preventive measures, the container
office will be supported by a raised hollow platform, or equivalent measure
should be provided. This will allow passive ventilation and avoid accumulation
of landfill gas, if any, beneath the container office. Main site offices and other site facilities
having the potential to trap landfill gas shall be located outside the SENT
landfill consultation zone. No underground
drainage and sewage system including underground pipelines and chambers shall
be constructed within the SENT landfill consultation zone. Access to the fill bank by the general
public shall be restricted.
6.3.2
During the establishment, operation and decommissioning phases
of the fill bank, hazards may arise as a result of the flammability of landfill
gas or its potentially asphyxiating properties. It is advisable to include
appropriate specified clauses for incorporation in the contract documents for
the project. In general, the contractor
should be aware of, and should inform supervisor and workers of the following:
·
Methane and carbon dioxide are always
likely to be present in the soil voids;
·
Physical and chemical nature of
landfill gas;
·
Methodologies for landfill gas
detection;
·
Fire and explosion hazards associated
with landfill gas;
·
Toxicity effects and health hazards
associated with landfill gas;
·
Potential health effects from direct
contact with leachate/ groundwater contaminated by leachate; and
·
Provide the contingency measures for
leachate/ groundwater contamination.
6.3.3
Precautions should be clearly laid down and rigidly adhered
for activities such as excavation, trenching and creation of confined or
semi-confined spaces, if any, carried out within or near the consultation
zone. In addition to normal site safety
procedures, gas detection equipment and appropriate breathing apparatus should
be available and used when entering confined spaces or trenches deeper than 2
metres.
6.3.4
Personnel entering the container office shall be fully
informed of the risk associated with potential landfill gas exposure.
6.3.5
Concentration of methane, carbon dioxide and oxygen within the
manholes or the like shall also be checked in prior and confirmed to be within
a safe level before any workers shall enter the enclosed space within the
landfill site consultation zone.
6.3.6
Safety measures including the following should be addressed in
the contract document:
·
Proper warning of the potential
hazards in the vicinity of excavations;
·
Appropriate training for workers who
work in, or have responsibility for “at risk” areas;
·
Preparation of an excavation procedure
or code of practice;
·
Prohibition of smoke and naked flames
within any excavation or ground-level confined space;
·
Proper control of welding,
flame-cutting or other hot works from any trench, confined spaces or excavation
area;
·
Proper location for mobile offices,
equipment stores, mess rooms, etc.;
·
Provision of adequate fire
extinguishing equipment, fire-resistant clothing and breathing apparatus;
·
Preparation of a “method-of-working”
statement covering all normal and emergency procedures before beginning of any
required drilling operations.
6.4
Leachate Protective Measures
6.4.1
During the establishment, operation and decommissioning phases
of the fill bank, the workers should be instructed to adopt good hygiene
practices to prevent direct exposure to any leachate or leachate-contaminated groundwater
i.e. wash thoroughly after work, eat only in clean area after washing hands,
and wear protective gear including gloves and appropriate clothing in
excavation activities. Should there be
any sign of leachate-contaminated groundwater being encountered, the SENT
landfill operator should be informed so that this can be collected and
transported back to the sewage treatment works of the SENT landfill for
treatment by the SENT landfill operator, and the leachate control system/
measures at source can be reviewed.
6.4.2
The implementation schedule for the mitigation measures
recommended above for the establishment, operation and decommissioning phases
is presented in Appendix 10-1 of the EIA Report. The Contractor shall be responsible for the design and implementation
of these measures.
7.1
Introduction
7.1.1
CED is currently implementing a comprehensive water quality
monitoring programme as part of the Contract (CV/97/01)
“Tseung Kwan O Port Development at Area 137 Stage 2 - Construction of Seawalls
and Reclamation”. Figure 7-1 shows the
locations of the existing control and impact monitoring stations (M1 through M4
and C1 through C2). The water quality
parameters including turbidity in NTU, dissolved oxygen (DO) in mg/l and
suspended solids (SS) in mg/l are being monitored three days per week at
mid-flood and mid-ebb tides.
7.1.2
It is considered that the existing water quality monitoring
data obtained under the reclamation project can be adopted to establish the
baseline water quality, and after the fill bank is implemented, to allow
potential cumulative water quality impact arising from the reclamation works
and the fill bank be monitored.
Repeating the water quality monitoring already carried out under the
reclamation works is not considered necessary.
As an alternative, the ET Leader of the fill bank project should review
each set of water quality monitoring data obtained through CED once the
laboratory results are available for checking compliance with the action/ limit
levels established for the fill bank operation, and for formulation of the
corresponding event and action plan.
7.1.3
After completion of the water quality monitoring programme
carried out under the Stage 2 reclamation works at TKO Area 137, the ET of the
fill bank project shall continue the water quality monitoring by initializing
its own programme. Given the nature of
the fill bank project which essentially involves land-based activities without
marine works (e.g. dredging/ filling), it is considered that the scale of the
water quality monitoring programme could be reduced, and water quality
monitoring at the control station C1 and impact station M4 near the most
sensitive water sensitive receiver - Tung Lung Chau fish culture zone would be
adequate.
7.2
Baseline Monitoring
7.2.1
Baseline water quality conditions shall be established by the
ET Leader and agreed with the DEP. As an alternative to the carrying out actual
water quality monitoring, the baseline water quality conditions can be
established by a review of the water quality monitoring data obtained under the
ongoing EM&A programme under the Stage 2 reclamation works. The ET Leader shall seek approval from the
IC(E) and DEP on the appropriate set of water quality monitoring data to be
adopted in establishing the baseline.
7.3
Water Quality Parameters
7.3.1
Upon the completion of the on-going EM&A programme carried
out under the Stage 2 reclamation works at TKO Area 137, monitoring of water quality
parameters including turbidity in NTU, dissolved oxygen (DO) in mg/l and
suspended solids (SS) in mg/l shall be carried out by the ET of the fill bank
project to ensure that any deteriorating water quality associated with the fill
bank operation and decommissioning can be identified and actions are taken
timely to rectify the situation.
7.3.2
In association, other relevant data such as monitoring
locations/positions, time, water depth, water temperature, salinity, weather
conditions, sea conditions, tidal stage and any special phenomena and work
underways should be recorded. A sample monitoring record sheet is shown in
Figure 7-2 for reference.
7.4
Monitoring Equipment
7.4.1
All monitoring equipment shall be provided by the ET and approved
by the ER in consultation with the IE(C).
Dissolved Oxygen and Temperature Measuring Equipment
7.4.2
The instrument shall be a portable, weatherproof dissolved
oxygen measuring instrument complete with cable, sensor, comprehensive
operation manuals, and use a DC power source. It should be capable of
measuring:
·
a dissolved oxygen level in the range
of 0-20 mg/l and 0-200% saturation; and
·
a temperature of 0-45° C.
7.4.3
It shall have a membrane electrode with automatic temperature
compensation complete with a cable. Sufficient stocks of spare electrodes and
cables shall be available for replacement where necessary (e.g. YSI model 59
meter, YSI 5739 probe, YSI 5795A submersible stirrer with reel and cable or an
approved similar instrument).
7.4.4
Should salinity compensation not be built-in in the DO
equipment, in-situ salinity shall be measured to calibrate the DO equipment
prior to each DO measurement.
Turbidity Measurement Instrument
7.4.5
The instrument shall be a portable, weatherproof turbidity-measuring
instrument complete with comprehensive operation manual. The equipment shall
use a DC power source. It shall have a photoelectric sensor capable of
measuring turbidity between 0-1000 NTU and be complete with a cable (e.g. Hach
model 2100P or an approved similar instrument).
Suspended Solids
7.4.6
A water sampler comprises a transparent PVC cylinder, with a
capacity of not less than 2 litres and can be effectively sealed with latex
cups at both ends. The sampler shall
also 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 (e.g. Kahlsico Water Sampler or an approved similar instrument).
7.4.7
Water samples for suspended solids measurement should be
collected in high density polythene bottles, packed in ice (cooled to 4°C
without being frozen), and delivered to the laboratory as soon as possible
after collection.
Water Depth Detector
7.4.8
A portable, battery-operated echo sounder should be used for
the determination of water depth at each designated monitoring station. This
unit can either be handheld or affixed to the bottom of the work boat, if the
same vessel is to be used throughout the monitoring programme.
Salinity
7.4.9
A portable salinometer capable of measuring salinity in the
range of 0-40ppt shall be provided for measuring salinity of the water at each
monitoring location.
Checking and Calibration of Equipment
7.4.10 A
hand-held or boat-fixed type digital Global Positioning System (GPS) with way
point bearing indication or other equivalent instrument of similar accuracy
shall be provided and used during monitoring to ensure the monitoring vessel is
at the correct location before taking measurements.
7.4.11 All
in-situ monitoring instrument shall be checked, calibrated and certified by a
laboratory accredited under HOKLAS or any other international accreditation scheme
before use, 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.
7.4.12 For
the on site calibration of field equipment, the BS 127:1993, "Guide to
Field and on-site test methods for the analysis of waters" shall be
observed.
7.4.13 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.
7.5
Laboratory Measurement / Analysis
7.5.1
Analysis of suspended solids shall be carried out in a HOKLAS
or other internationally accredited laboratory. Water samples of about 1,000 ml
shall be collected at the monitoring stations for carrying out the laboratory
SS determination. The detection limit shall be 1 mgL-1 or better. The SS determination work shall start within
24 hours after collection of the water samples. The SS determination shall
follow APHA 17ed 2540D or equivalent methods subject to approval of DEP.
7.5.2
If a site laboratory is set up, or a non-HOKLAS and
non-international accredited laboratory, is hired for carrying out the
laboratory analysis, the laboratory equipment, analytical procedures, and
quality control shall be approved by the DEP. All the analyses shall be
witnessed by the ER and the IC(E). The ET Leader shall provide the ER and IC(E)
with one copy of the relevant chapters of the "Standard Methods for the
Examination of Water and Wastewater" updated edition and any other
relevant document for his reference.
7.5.3
For the testing methods of other parameters as recommended by
the EIA or required by DEP, 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 DEP for approval prior to the commencement
of monitoring programme. The QA/QC
shall be in accordance with the requirement of HOKLAS or international
accredited scheme. The QA/QC results
shall be reported. DEP may also request
the laboratory to carry out analysis of known standards provided by DEP for
quality assurance. Additional duplicate
samples may be required by DEP for inter laboratory calibration. Remaining samples after anaysis 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 be submitted to
DEP. In any circumstance, the sample
testing shall have comprehensive quality assurance and quality control
programme. The laboratory shall be
prepared to demonstrate the programmes to DEP or his representatives when
requested.
7.6
Proposed Monitoring Locations
7.6.1
Upon completion of the ongoing EM&A programme under the
Stage 2 reclamation works, the ET shall continue the water quality monitoring
at the impact station M4 and control station C1. Locations of the water quality monitoring stations are shown in
Figure 7-1.
7.6.2
If alternative locations for the impact and control monitoring
stations are proposed by the ET, the ET Leader shall seek prior approval from
the IC(E) and DEP.
7.6.3
When alternative monitoring locations are proposed, they should
be chosen based on the following criteria:
§
at locations close to and preferably
at the boundary of the mixing zone of the major site activities, which are
likely to have water quality impacts;
§
close to the sensitive receptors which
are directly or likely to be affected;
§
for monitoring locations located in
the vicinity of the sensitive receptors, care should be taken to cause minimal
disturbance during monitoring; and
§
control station shall be selected at a
location to allow a comparison of the water quality at the potentially impacted
site with the ambient water quality.
The control station shall be selected such that it is located within the
same body of water as the impact monitoring station but is located outside the
area of influence of the works.
7.6.4
Similar to the ongoing water quality monitoring programme,
measurements shall be taken under two tidal conditions (mid-flood and mid-ebb)
at 3 water depths, namely, 1 m below water surface, mid-depth and 1 m above
seabed, except where the water depth is less than 6m, the mid-depth station may
be omitted. At monitoring stations
coincident with seawater intakes, the SS and turbidity measurements should make
reference to the vertical levels of the individual intake pipes. Should the water depth be less than 3m, only
the mid-depth station will be monitored.
The ET Leader shall seek approval from the IC(E) and DEP on all
monitoring station locations.
Replicates in situ measurements and sample collected from each independent
sampling event are required for all parameters to ensure a robust statistically
interpretable dataset.
7.7
Impact Monitoring
7.7.1
Upon completion of the ongoing EM&A programme implemented
under the Stage 2 reclamation works, monitoring shall be undertaken by the ET
at a frequency of three days per week, at mid-flood and mid-ebb tides similar
to the ongoing monitoring programme but with sampling/measurement at the
designated monitoring stations M4 and C1 only.
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 shall be increased.
7.7.2
Upon completion of the decommissioning phase of the fill bank,
a post project monitoring exercise on water quality shall be carried out for
two weeks in the same manner as the impact monitoring.
7.7.3
Proposed water quality monitoring schedule shall be faxed to
EPD at least 1 week before the first day of the monitoring month. EPD shall also be notified immediately for
any changes in schedule by fax.
7.8
Event and Action Plan for Water
Quality
7.8.1
The water quality criteria, namely Action and Limit levels
shall be based on the results of baseline monitoring, the Water Quality Objectives,
or based on the results of statistical analysis on the difference between
impact monitoring results and 30% above control, and/or specific levels defined
for the sensitive receivers. Should
non-compliance of the action or limit levels occurs, the ET should review and
identify the potential source(s) of the impact, devise and implement
appropriate mitigate measures in a collaborative manner. A project specific event/ action plan shall
be designed by the ET Leader taking into account collaborative action required
to be established with the contractor/ environmental team of the reclamation
works through CED. The ET shall seek approval of the event/ action plan from
DEP before implementation.
Table 7‑1 Typical Action and Limit Levels for
Water Quality
|
Parameters
|
Action
|
Limit
|
|
DO in mg/l
(Surface, Middle & Bottom)
|
Surface & Middle
5%-ile of baseline data for surface and
middle layer; or
Bottom
5%-ile of baseline data for bottom layer;
or
|
Surface & Middle
4 mg/l except 5 mg/l for M4 at Fish Culture Zone
(FCZ)
or
1%-ile of baseline data for surface and middle layer
Bottom
2 mg/l or
1%-ile
of baseline data for bottom layer
|
|
SS in mg/l
(depth-averaged)
|
95%-ile of baseline data or 120% of
upstream control station’s SS at the same tide of the same day
|
99%-ile of baseline, 130% of upstream control
station's SS at the same tide of the same day and specific sensitive receiver
water quality requirements (e.g. required suspended solids level at FCZ)
|
|
Turbidity (Tby) in NTU
(depth-averaged)
|
95%-ile of baseline data or 120% of
upstream control station's Tby at the same tide of the same day
|
99%-ile of baseline or 130% of upstream control
station's Tby at the same tide of the same day
|
7.9
Control/ Mitigation Measures
Addressing Water Quality Impact
7.9.1
The various mitigation measures recommended in the EIA Report for
controlling potential water quality impact arising from the fill bank are
summarised in this section.
7.9.2
Control of potential water quality impact arising from the
establishment, operation and decommissioning phases of the fill bank shall be effected
based on the following principles:
·
Prevention or minimisation of the
likelihood of the identified pollutants being in contact with rainfall or
runoff; and
·
Measures to abate pollutants in the
stormwater runoff.
7.9.3
These principles shall be achieved through the implementation
of the Best Management Practices (BMPs) in controlling water pollution during
the construction phase. The guidelines
for handling and disposal of construction site discharges as detailed in EPD’s
ProPECC Note PN1/94 “Construction Site Drainage” should be followed. The water pollution control measures that
are considered most relevant to this study are listed below which should be
implemented by the contractor during the execution of the site formation and
roadworks, where practicable.
7.9.4
Proper water pollution control measures are recommended for
implementation by the Contractor during the establishment, operation and
decommissioning phases to minimise potential impacts associated with the
implementation of the fill bank. These
measures are recommended to be included in the Contract Specification for the
Contractor to follow the environmental requirements such that well designed
site drainage system and pre-treatment facilities are provided onsite. All effluent discharge from the site during
the construction, operation and decommissioning phases shall meet the relevant
discharge limits specified in the Technical Memorandum on Standards for
Effluents Discharged into Drainage and Sewerage Systems, Inland and Coastal
Waters.
Provision of Stormwater
Interception Facilities and Buffer Zone
7.9.5
Existing trapezoidal channels were already constructed along
most lengths at the perimeter of the TKO Area 137 site for intercepting
polluted runoff generated from the reclamation works and associated activities
(e.g. stockpiling of surcharge mounds).
Galvanized drainage screens were installed as part of the drainage
system. The existing drainage channels
should be used for the fill bank or realigned to fit the fill bank
operation. The existing/ realigned
drainage channels should be equipped with sand/ de-silting traps. During the stockpiling of public fill,
temporary intercepting drains should be used at the stockpiling area to divert
polluted stormwater to the intercepting channels.
7.9.6
Before complete realignment of the existing channel to fit the
fill bank design, earth bunds and sand bag barriers shall be used at required
locations to effectively divert stormwater to the existing/ realigned drainage
channels. The temporary drainage
facilities provided shall allow polluted stormwater to be diverted to existing/
realigned intercepting channels before stockpiling of public fill should
begin. The intercepting channels shall
be equipped with adequately designed sand/ silt removal facilities to allow the
stormwater to be treated before discharge at the designated outfalls. Effluent
discharge from the site during the establishment, operation and decommissioning
phases shall meet the relevant discharge limits specified in the Technical
Memorandum.
7.9.7
To minimise potential water quality impact associated with
runoff of polluted surface water, based on the current preliminary fill bank
design, a buffer distance of about 100m would be provided between the edge of
the public fill stockpiling area and the seafront. Open channels and/or other effective drainage system shall be
constructed at the perimeter of the site for intercepting and directing runoff
to sand/ silt removal facilities prior to discharge. The existing trapezoidal drainage channels lying along the
perimeter of the site constructed under the Contract (CV/97/01) “Tseung Kwan O
Port Development at Area 137 Stage 2 – Construction of Seawalls and
Reclamation” shall be used or realigned where necessary and new sections
constructed at required locations.
Excavated Material
generated during Establishment
7.9.8
Excavated material generated from the establishment of the
onsite facilities that are not required to be backfilled should be transported
as soon as possible to the public fill storage area to avoid potential water
quality impact especially during the rainy season.
Proper Design of
C&DMSF
7.9.9
A buffer distance of at least 20m should also be maintained
between the boundary of the C&DMSF and the seafront. Operation of the C&DMSF shall also be
served by an effective stormwater intercepting system.
7.9.10
Pre-sorted C&D material, and sorted public fill and
C&D waste should be handled and stored properly within concrete partition
wall or other equivalent structures that are at least enclosed on three
sides. Storage time of sorted materials
at the buffer storage area should be minimised by transferring sorted public
fill and C&D waste to the stockpiling area and SENT landfill respectively
as soon as possible. The materials
stored at the buffer area shall be minimised before rainstorm and shall be
properly covered when there is any chance for the material to be washed away.
The sorting facility shall be provided with an associated drainage system
especially in the vicinity of the storage areas for collection of runoff and
removal of suspended solid before the stormwater is discharged to the sea at
the designated outlets.
Sorted Public Fill
7.9.11
Public fill transported to the stockpiling area for storage
should not contain unsuitable material such as peat, vegetation, timber,
organic, soluble or perishable material, dangerous or toxic material, floatable
materials (such as bottle, plastic bags, foam box), and materials susceptible
to combustion.
Surface Protection
Measures for Slope
7.9.12
Public fill at the stockpiling area should be handled with
care in proper manner that will not result in segregation, deterioration,
erosion or instability of the material.
The designated positions for the unloading of fill material in the daily
operation of the fill bank should be followed.
Temporary slope surfaces shall be covered as far as practicable and as
soon as possible with tarpaulin sheets or other impermeable sheeting or
protected by other methods approved by CED when rainstorms are likely,
especially when a rainstorm is imminent or forecast. Final slope surfaces shall be treated by compaction, followed by
hydroseeding, vegetation planting or sealing with shotconcrete, latex, vinyl,
bitumen, or other suitable surface stabiliser approved by CED to prevent the
washing away of stockpiled material.
Maintenance of Sand/ Silt
Removal Facilities
7.9.13
Adequately designed and constructed catchpits, sand and silt
removal facilities and intercepting channels should be maintained, and the deposited
silt and grit should be removed weekly and on a need basis especially during
the onset of and after each rainstorm to ensure that these facilities are
functioning properly at all times during the establishment, operation and
decommissioning phases.
Wheel Washing Facilities
7.9.14
All vehicles and plant bodies should be cleaned before they
leave the fill bank site to ensure that no earth, mud or debris is deposited by
them on roads. A wheel washing bay
should be provided at the site exits and wash-water should have sand and silt
settled out or removed before the water is being reused or discharged into
storm drains. The section of
construction road between the wheel washing bay and the public road should be
paved with concrete, bituminous materials or hardcores to reduce vehicle
tracking of soil and to prevent site run-off from entering public road drains.
Wastewater from Site
Facilities
7.9.15
Sewage from toilets and similar facilities should be
discharged into a foul sewer, or chemical toilets should be provided. Should the use of chemical toilets be
necessary, these should be provided by a licensed contractor, who will be
responsible for appropriate disposal and maintenance of these facilities. Wastewater collected from canteen kitchens,
including that from basins, sinks and floor drains, should be discharged into
foul sewers via grease traps. Drainage
system provided at car parking areas shall be provided with oil interceptors in
addition to sand/ silt removal facilities.
Use of Barges
7.9.16
All barges used in the transportation of fill material during
the operation/ decommissioning stages should be of appropriate size such that
adequate clearance is maintained between the 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. All vessels used for
transportation of fill material should have tight fitting seals to their bottom
openings to prevent leakage of material during transport. For the transfer of public fill from the
barges to TKO Area 137, relevant design and environmental control measures
taking into account the technical to be used shall be specified in the
Technical Specification to avoid dropping of fill material into the sea during
the transfers, including:
When
backhoe fixed on an appropriately design flat-top pontoon is in use, the reach
of the backhoe shall be controlled to within the flat-top pontoon of sufficient
length to avoid accidental dropping of public fill into the sea;
When
hopper barges with mobile crane is in use, guardrails or equivalent shall be
fixed alongside the berthing faces to guide the movement of the crane to avoid
accidental dropping of fill material into the sea;
When derrick
barges with built-in crane are in use, the reach of the jig shall be controlled
to within the length of the barge to avoid accidental dropping of public fill
into the sea.
7.9.17
These recommended measures for transfer of public fill from
barges to the fill bank are illustrated in Figure 7-3 through Figure 7-5.
7.9.18
Should other equivalent transfer methods and environmental
protection measures be proposed by the future contractor, these shall be
subject to approval of CED and DEP.
Besides, barges should not be filled to a level which may cause the
overflow of material during loading or transportation. Barge effluents (e.g.
muddy water) should be properly collected and treated prior to disposal. The
work activities should not cause any visible foam, oil, grease, scum, litter or
other objectionable matters to be present on the water in the vicinity of the
barging point. Silt curtains and refuse
containment booms are deployed in the ongoing reclamation activities in TKO Area
137. These water pollution control measures
will offer further protection in minimising potential water quality impact in
the fill bank operation.
7.9.19
After the completion of the reclamation works in December
2003, CED will require the fill bank contractor to provide silt curtains at the
outward side of the basin near the barging point throughout the operational
phase when there is public fill intake by barges to the fill bank. The total length of the silt curtains would
be about 160 to 180m, and a gap of about 80m will be left open for access of
barges. The silt curtains shall be
properly designed such that it can also serve the function of refuse
containment boom to confine floating refuse. Throughout the operation and
decommissioning phases of the fill bank, a waste collection vessel should be
deployed to remove floating refuse on the sea near the fill bank for proper
disposal.
Construction Site Drainage
Guidelines
7.9.20
Other best management practices to reduce stormwater and
non-point source pollution recommended under ProPECC PN 1/94 on Construction Site Drainage should be
properly followed.
7.9.21
The implementation schedule for the mitigation measures
recommended above for the establishment, operation and decommissioning phases
is presented in Appendix 10-1 of the EIA Report. The Contractor shall be responsible for the design and
implementation of these measures. If the above measures are not sufficient to
restore any water quality impact monitored to acceptable levels, upon the
advice and discussion with the ET, IC(E) and ER, the ET shall propose some
other mitigation measures for implementation by the Contractor. The ET shall carry out regular site audit to
ensure timely implementation of best management practices (e.g. ProPECC Note
PN1/94) and the relevant mitigating measures.
Further details of the audit programme are described in Section 9.
8.1
Introduction
8.1.1
The EIA Report predicts that the operation and decommissioning
of the Fill Bank will require a range of mitigation measures which have been designed
to minimise predicted landscape and visual impacts, and to compensate for lost
landscape resources as far as is possible given the project constraints. The mitigation measures identified through
the EIA process have taken into consideration of the following criteria:
·
Consideration of the contouring of new
slopes in order to visually integrate them into the existing topography.
·
Use of vegetation or materials to
visually integrate the landform into the surrounding landscape.
·
Protection of existing natural slopes
adjacent to the site.
8.1.2
The landscape and visual mitigation measures are detailed in
Section 8 of the EIA Report, the Landscape and Visual Impact Assessment.
8.1.3
Audit of mitigation measures to avoid impacts on landscape and
visual resources by the Environmental Team will be required during the
operation period. In particular this will include supervision of the bund
design and supervision of the hydroseeding, and to ensure successful
establishment of the seeding.
8.2
Baseline Monitoring
8.2.1
Area 137 is an area of relatively recent reclamation of low
quality and sensitivity, with little vegetation present. As there are no tree
species present on the site, there will be no requirement to undertake a baseline
monitoring for the landscape resources. The landscape baseline will be
determined with reference to the Landscape Resource Plan included in Section 8
of the EIA report. The visual amenity
baseline can be based on the visual amenity and impacts in Section 8 of the EIA
report.
8.3
Impact Monitoring
8.3.1
The implementation of the recommended landscape and visual
mitigation measures for the Fill Bank development should start with a detailed
review of the detailed design and tender package to ensure that the proposals
meet the objectives described in the LVIA.
The Project Engineers should identify and review any deviations from the
original proposals and confirm with the Authority to ensure that the level of
mitigation is adequate. This may
involve further impact assessments for areas affected by refinements to the
project if necessary.
8.4
Operation Phase
Audit
8.4.1
The Contractor for the implementation of landscape works
should employ a Registered Landscape
Architect who should supervise the formation of the bunds, hydroseeding and
subsequent maintenance operations during the operation period. New hydroseeding
works shall be carried out by a Government approved Landscape Contractor.
8.4.2
The Environmental Team shall audit all measures undertaken for
both the Contractor and Landscape Contractor during the operational phase. This will be completed on a regular basis to
ensure compliance with the intended aims of the LVIA. Site inspections should be undertaken at least once every month
throughout the operation period of the fill bank, including the
operation-decommissioning overlapping period (i.e. from October 2002 to
December 2004), and once every two months during the decommissioning phase
(i.e. from January 2005 to December 2007).
In addition, audit of mitigation measures to avoid impacts on landscape
and visual resources will be required during the operation period. The findings of these inspections shall be
reported in the monthly audit reports.
8.5
Decommissioning
Phase Audit
8.5.1
The landscape contractor shall carry out the maintenance of
all hydroseeded areas for at least 12 months following application. Maintenance
works shall comply the Government General Specification for Soft Landscape
Works. The key tasks to ensure the
proper plant establishment will include inter alia:
·
Regular watering, weeding and
fertilising of all areas of grass reinstatement;
·
Regular grass cutting for reinstated
areas;
·
Regular checking and eradication of
pests, fungal infection, etc.
·
Prompt regrassing of failed areas of
grass.
8.5.2
The implementation schedule for the mitigation measures
recommended above for the establishment, operation and decommissioning phases
is presented in Appendix 10-1 of the EIA Report. The Contractor shall be responsible for the design and
implementation of these measures and shall
appoint a registered landscape architect for the works. If the above measures are not sufficient to
restore any landscape and/or visual impact monitored to acceptable levels. Upon
the advice and discussion with the ET, IC(E) and ER, the Landscape Architect
shall propose alternative mitigation measures for implementation.
9.1
Site Surveillance
9.1.1
Site surveillance provides a direct means to trigger and
enforce the specified environmental
protection and pollution control measures are in compliance with the
contract specifications. They shall be
undertaken regularly and routinely by ET to inspect the activities at the fill
bank site in order to ensure that appropriate environmental protection and
pollution control mitigation measures are properly implemented by the
Contractor in accordance with the EM&A recommendations. With well-defined pollution control and
mitigation specifications and a well- established site inspection, deficiency
and action reporting system, the site inspection is one of the most effective
tools to enforce the environmental protection requirements on the site.
9.1.2
The ET Leader is responsible for formulation of the
environmental site inspection, deficiency and action reporting system, and for
carrying out the site inspections under the EM&A works. He shall prepare and submit a proposal on
the site inspection, deficiency and action reporting procedures within 21 days
of the construction contract commencement to the Contractor for agreement and
to the ER and IC(E) for approval. A
preliminary site inspection, deficiency and action reporting system in form of
a flow chart is prepared for reference.
This is shown in Figure 9-1 for review and refinement by the ET at the
commencement of the Project.
9.1.3
Regular site inspections shall be carried out at least once per
week during the establishment, operation and decommissioning of the fill
bank. The areas of inspection shall not
be limited to the environmental situation, pollution control and mitigation
measures within the site, it should also review the environmental situation
outside the site area which is likely to be affected, directly or indirectly,
by the site activities. The ET Leader
shall make reference to the following information in conducting the inspection:
1. The EIA recommendations on environmental protection and pollution
control mitigation measures with regard to air quality, noise, water quality,
landfill gas hazard and visual/ landscape impacts;
2. Works progress and programme;
3. Individual works methodology proposals (which shall include proposal
on associated pollution control measures);
4. The contract specifications on environmental protection and
pollution prevention control;
5. The relevant environmental protection and pollution control laws,
ProPECC Notes; and
6. Previous site inspection results.
9.1.4
The Contractor shall update with the ET on all relevant
information of the contract for him to carry out the site inspections. The inspection results and its associated
recommendations on improvements to the environmental protection and pollution
control works shall be submitted to the IC(E) and the Contractor in a site
inspection proforma within 24 hours, for reference and for taking immediate
action. The Contractor shall follow the
procedures and time-frame as stipulated in the environmental site inspection,
deficiency and action reporting system formulated by the ET to report on any
remedial measures subsequent to the site inspections.
9.1.5
Ad hoc site inspections shall be carried out by the ET if
significant environmental problems are identified. Independent audits shall also be carried out by the IC(E). 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.
9.2
Compliance with Legal and Contractual
Requirements
9.2.1
There are contractual environmental protection and pollution
control requirements as well as environmental protection and pollution control
laws in Hong Kong, which the activities at the fill bank shall comply.
9.2.2
The ET shall 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 the laws can be prevented.
9.2.3
The Contractor shall regularly copy relevant documents to the
ET so that the checking work can be carried out. The document shall at least include the updated Work Progress
Reports, the updated Works Programme, the application letters for different
licence/permits under the environmental protection laws, and all the valid
licence/permit. The site diary shall
also be available for the ET’s inspection upon his request.
9.2.4
After reviewing the document, the ET shall advise the ER and
the Contractor of any non-compliance with the contractual and legislative
requirements on environmental protection and pollution control for them to take
follow-up actions. If the ET’s review
concludes that the current status on licence/permit application and any
environmental protection and pollution control preparation works may not cope
with the works programme or may result in potential violation of environmental
protection and pollution control requirements by the works in due course, he
shall also advise the Contractor and the ER accordingly. The review shall be copied to IC(E) for any
follow-up action.
9.2.5
Upon receipt of the advice, the Contractor shall undertake
immediate action to remedy the situation.
The ER shall check that appropriate action has been taken by the
Contractor in order that the environmental protection and pollution control
requirements are fulfilled.
9.3
Environmental Complaints
9.3.1
Complaints received on environmental issues shall be referred
to the ET Leader for carrying out complaint investigation procedures. The ET shall undertake the steps given below
in (1) to (9) upon receipt of the complaints.
The complaint investigation procedures are also presented in form of a
flow chart in Figure 9-2 for easy reference.
1. Log complaint and date of receipt onto the complaint database and
inform the IC(E) immediately;
2. Investigate the complaint to determine its validity, and to assess
whether the source of the problem is due to works activities;
3. If a complaint is valid and due to works, identify mitigation
measures in consultation with the IC(E);
4. If mitigation measures are required, advise the Contractor
accordingly;
5. Review the Contractor’s implementation of the identified mitigation
measures, and the concurrent situation;
6. If the complaint is transferred from EPD, submit interim report to
EPD on status of the complaint investigation and follow-up action within the
time frame assigned by EPD;
7. Undertake additional monitoring and audit to verify the compliant if
necessary, and ensure that any valid reason for complaint does not recur
through proposed amendments to work methods, procedures, machines and/or
equipment, etc;
8. Report the investigation results and the subsequent actions to the
source of complaint (If the source of complaint is identified through EPD, the
results should be reported within the time frame assigned by EPD); and
9. Log a record on the complaint, investigation, the subsequent actions
and the results in the monthly EM&A reports.
9.3.2
The ER shall notify the project proponent of any complaints
received and keep him well informed of the actions being taken to settle these
complaints.
9.3.3
During the complaint investigation work, the Contractor and ER
shall co-operate with the ET Leader in providing all the necessary information
and assistance for completion of the investigation. If mitigation measures are identified to be required in the
investigation in consultation with the IC(E), the Contractor shall promptly
carry out the measures. The ER shall
ensure that the measures have been carried out by the Contractor.
9.4
Documentation
9.4.1
All documentation is required to be filed in a traceable and
systematically manner and ready for inspection upon request. All EM&A
results and findings shall be documented in the EM&A report prepared by the
ET and endorsed by IC(E) prior to circulation to the Contractor, ER and EPD.
10.1
General
10.1.1 The
following reporting requirements based upon a paper-documented approach. However, the same information shall be
provided in an electronic medium upon agreeing the format with the ER and
EPD. All the monitoring data (baseline
and impact) shall also be submitted in an agreed electronic format in
accordance with the requirements under Section 4.2 of the EIA Study Brief. This would enable a transition from a
paper/historic and reactive approach to an electronic/real time proactive
approach.
10.2
Baseline Monitoring Report
10.2.1 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 each of the four parties: the Contractor,
the IC(E), the ER, and EPD. The ET
Leader shall liaise with the relevant parties on the exact number of copies
needed. The format and content of the
report, and the representation of the baseline monitoring data to be submitted
to EPD shall be agreed with EPD.
10.2.2 The
baseline monitoring report shall include at least the following:
1. Up to half a page executive summary;
1.
Brief project background information;
2.
Drawings showing locations of the
baseline monitoring stations;
3.
An updated programme on construction/
operation/ decommissioning of the fill bank with milestones of environmental
protection/mitigation activities annotated;
4.
Monitoring results (in both hard and
diskette copies) together with the following information:
·
Monitoring methodology;
·
Name of laboratory and types of
equipment used and calibration details;
·
Parameters monitored;
·
Monitoring locations (and depth);
·
Monitoring date, time, frequency and
duration;
·
QA/QC results and detection limits.
5.
Details on influencing factors,
including:
·
Major activities, if any, being
carried out on the site during the period;
·
Weather conditions during the period;
·
Other factors which might affect the
results.
6.
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;
7.
Revisions for inclusion in the
EM&A Manual; and
8.
Comments and conclusions.
10.3
Monthly EM&A Reports
10.3.1 The
results and findings of all EM&A work required in the Manual shall be
presented in a monthly EM&A report that shall be prepared by the ET Leader.
The EM&A report shall be endorsed by IC(E), and then submitted to EPD
within 10 working days of the end of each reporting month. The first report dues in the month after the
establishment phase commences. A
maximum of 4 copies of each monthly EM&A report shall be submitted to each
of the four parties: the Contractor, the IC(E), the ER and EPD. Before submission of the first EM&A
report, the ET Leader shall liase with the parties on the exact number of
copies and format of the monthly reports in both hard copy and electronic
medium required.
10.3.2 The
ET Leader shall review the number and location of monitoring stations and
parameters to monitor every 6 months or on as needed basis in order to cater
for the changes in surrounding environment and nature of works in progress.
10.4
First Monthly EM&A Report
10.4.1 The
first monthly EM&A report shall include at least the following:
1. Executive Summary (1-2 pages);
·
Breaches of AL levels;
·
Complaint Log;
·
Notifications of any summons and
successful prosecutions;
·
Reporting Changes;
·
Future key issues.
2.
Basic Project Information
·
Project organisation including key
personnel contact names and telephone numbers;
·
Programme with fine tuning of
activities showing the inter-relationship with environmental
protection/mitigation measures for the month;
·
Management structure;
·
Works undertaken during the month.
3.
Environmental Status
·
Works undertaken during the month with
illustrations (such as location of works, daily, dredging/filling rates,
percentage fines in the fill material used);
·
Drawing showing the project area, any
environmental sensitive receivers and the locations of the monitoring and
control stations.
4.
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 project EIA study final report;
·
Environmental requirements in contract
documents;
5.
Implementation Status
·
Advice on the implementation status of
environmental protection and pollution control/mitigation measures as
recommended in the project EIA study report, summarised in the updated
implementation schedule.
6.
Monitoring Results (in both hard and
electronic copies) together with the following information;
·
Monitoring methodology;
·
Name of laboratory and 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:
·
Major activities being carried out on
site during the period;
·
Weather conditions that may affect the
results;
·
Any other factors which might affect
the monitoring results;
·
QA/QC results and detection limits;
·
All monitoring results should be
tabulated with exceedances highlighted for ease of reference.
7.
Report on Non-compliance, Complaints,
Notifications of Summons and Successful Prosecutions
·
Record of all noncompliance
(exceedances) of the environmental quality performance limits (Action and Limit
levels);
·
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;
·
Record of all notifications of summons
and successful prosecutions for breaches of the current environmental
protection/pollution control legislations, including locations and nature of
the breaches, investigation, follow-up actions taken, result and summary;
·
Review of the reasons for and the
implications of non-compliance, complaints, summons and prosecutions including
review of pollution sources and working procedures;
·
Description of the actions taken in
the event of non-compliance and deficiency reporting and any follow-up
procedures related to earlier non-compliance;
8.
Others
·
An account of the future key issues
reviewed from the works programme and work method statements;
·
Advice on the solid and liquid waste
management status;
·
Submission of implementation status
proforma, proactive environmental protection proforma, regulatory compliance
proforma, site inspection proforma, data recovery schedule and complaint log
summarizing the EM&A of the period.
10.5
Subsequent Monthly EM&A Reports
10.5.1 The
subsequent monthly EM&A reports shall include the following:
1.
Executive Summary (1-2 pages)
·
Breaches of AL levels;
·
Complaint Log;
·
Notifications of any summons and
successful prosecutions;
·
Reporting Changes;
·
Future key issues.
2.
Environmental Status
·
Programme with fine tuning of
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;
·
Drawing showing the project area, any
environmental sensitive receivers and the locations of the monitoring and
control stations.
3.
Implementation Status
·
Advice on the implementation status of
environmental protection and pollution control/mitigation measures as
recommended in the EIA report as summarised in the updated implementation
schedule.
4.
Monitoring Results to provide
monitoring results (in both hard and electronic copies) together with the
following information
·
Monitoring methodology;
·
Name of laboratory and 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:
·
Major activities being carried out on
site during the period;
·
Weather conditions that may affect the
results;
·
Any other factors which might affect
the monitoring results;
·
QA/QC results and detection limits;
·
All monitoring results should be
tabulated with exceedances highlighted for ease of reference.
5.
Report on Non-compliance, Complaints,
Notifications of Summons and Successful Prosecutions
·
Record of all non-compliance (exceedances)
of the environmental quality performance limits (Action and Limit levels);
·
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;
·
Record of all notifications of summons
and successful prosecutions for breaches of the current environmental
protection/pollution control legislations, including locations and nature of
the breaches, investigation, follow-up actions taken, result and summary;
·
Review of the reasons for and the
implications of non-compliance, complaints, summons and prosecutions including
review of pollution sources and working procedures;
·
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.
6.
Others
·
An account of the future key issues
reviewed from the works programme and work method statements;
·
Advice on the solid and liquid waste
management status.
·
Submission of implementation status
proforma, proactive environmental protection proforma, regulatory compliance
proforma, site inspection proforma, data recovery schedule and complaint log
summarizing the EM&A of the period.
7.
Appendix
·
AL 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;
·
Any other factors which might affect
the monitoring results
·
Monitoring schedule for the present
and next reporting period
·
Cumulative statistics on complaints,
notifications of summons and successful prosecutions
·
Outstanding issues and deficiencies
10.6
Quarterly EM&A Summary Reports
10.6.1 The
quarterly EM&A summary report, which should generally be around 5 pages
(including about 3 of text and tables and 2 of figures) should contain at least
the following listed 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.
1. Up to half a page executive summary;
2. Basic project information including a synopsis of the project
organisation, programme, contacts of key management, and a synopsis of work
undertaken during the quarter;
3. 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 study final report;
4.
Advice on the implementation status of
environmental protection and pollution control/mitigation measures, as
recommended in the project EIA study report, summarised in the updated
implementation schedule;
5.
Drawings showing the project area, any
environmental sensitive receivers and the locations of the monitoring and
control stations;
6.
Graphical plots of the trends of
monitored parameters over the past 4 months (the last month of the previous
quarter and the present quarter) for representative monitoring stations
annotated against;
·
The major activities being carried out
on site during the period;
·
Weather conditions during the period;
and
·
Any other factors which might affect
the monitoring results;
7.
Advice on the solid and liquid waste
management status;
8.
A summary of non-compliance
(exceedances) of the environmental quality performance limits (Action and Limit
levels);
9.
A brief review of the reasons for and
the implications of non-compliance including review of pollution sources and
working procedures;
10. For project where measurement of suspended solids is required,
quarterly assessment of impacts on suspended solids at the project site,
including, but not limited to, a comparison of the difference between the
quarterly mean and 1.3 times of the ambient mean, which is defined as 30%
increase of the baseline data or EPD data, of the related parameters by using
appropriate statistical procedures.
Suggestion of appropriate mitigation measures if the quarterly
assessment analytical results demonstrate that the quarterly mean is
significantly higher than the 1.3 on water quality times of the ambient mean (p
< 0.05);
11. A summary description of the actions taken in the event of
non-compliance and any follow-up procedures related to earlier non-compliance;
12. A summary record of all complaints received (written or verbal) for
each media, liaison and consultation undertaken, actions and follow-up
procedures taken;
13. A summary record of all 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;
14. Comments (e.g. effectiveness and efficiency of the mitigation
measures), recommendations (e.g. any improvement in the EM&A programme) and
conclusions for the quarter; and
15. Proponents’ contacts and any hotline telephone number for the public
to make enquiries.
10.6.2 Apart
from the above, the first quarterly summary report should also confirm that the
monitoring works are proven to be effective, and the monitoring works are
generating data with the necessary statistical power to categorically identify
or confirm the absence of impact attributable to the works.
10.7
Final EM&A Summary Reports
10.7.1
Timing for completion of the EM&A Programme shall be
confirmed by ER in liaison with the IC(E).
Impact monitoring shall continue before the completion of work
activities associated with the establishment, operation and decommissioning of
the fill bank.
10.7.2 The
final EM&A summary report shall include the following:
1. An executive summary;
2.
Basic project information including a
synopsis of the project organisation, programme, contacts of key management,
and a synopsis of work undertaken during the entire establishment, operation
and decommissioning period of the fill bank;
3.
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 study final report;
4.
Advice on the implementation status of
environmental protection and pollution control/mitigation measures, as
recommended in the project EIA study report, summarised in the updated
implementation status proformas;
5.
Drawings showing the project area, any
environmental sensitive receivers and the locations of the monitoring and
control stations;
6.
Graphical plots of the trends of
monitored parameters over the period of establishment, operation and
decommissioning of the fill bank for representative monitoring stations
annotated against;
·
The major activities being carried out
on site during the period;
·
Weather conditions during the period;
·
Any other factors which might affect
the monitoring results; and
·
The return of ambient environmental
conditions in comparison with baseline data.
7.
Compare and contrast the EM&A data
with the EIA predictions and annotate with explanation for any discrepancies;
8.
Provide clear-cut decisions on the
environmental acceptability of the project with reference to the specific
impact hypothesis;
9.
Advice on the solid and liquid waste
management status;
10. A summary of non-compliance (exceedances) of the environmental
quality performance limits (Action and Limit levels);
11. A brief review of the reasons for and the implications of
non-compliance including review of pollution sources and working procedures;
12. A summary description of the actions taken in the event of
non-compliance and any follow-up procedures related to earlier non-compliance;
13. A summary record of all complaints received (written or verbal) for each
media, liaison and consultation undertaken, actions and follow-up procedures
taken;
14. Review the monitoring methodology adopted and with the benefit of
hindsight, comment on its effectiveness (including cost effectiveness);
15. A summary record of all 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;
16. Review the practicality and effectiveness of the EIA princess and
EM&A programme (e.g. effectiveness and efficiency of the mitigation
measures), recommend any improvement in the EM&A programme; and
17. A conclusion to state the return of ambient and/or the predicted
scenario as per EIA findings.
10.8
Forms to be Adopted
10.8.1 To
facilitate the management of the EM&A programme for the fill bank
implementation, the record forms presented in Appendix I (including those
presented in the preceding sections) should be adopted where applicable during
the establishment, operation and decommissioning phases of the Project. These forms are listed as follows:
1.
Implementation Schedule;
2.
Implementation Status Proforma;
3.
Data Recovery Schedule;
4.
Site Inspection Proforma;
5.
Proactive Environmental Protection
Proforma;
6.
Regulatory Compliance Proforma;
7.
Compliant Log;
8.
Sample Template for Interim
Notifications of Environmental Quality;
9.
Limits Exceedances;
10. Data Sheet for TSP Monitoring; and
11. Noise Monitoring Field Record Sheet.
10.9
Data Keeping
10.9.1 The
site document such as the monitoring field records, laboratory analysis
records, site inspection forms, etc. are not required to be included in the
monthly EM&A reports for submission.
However, the document shall be well kept by the ET and be ready for
inspection upon request. All relevant
information shall be clearly and systematically recorded in the document. The monitoring data shall also be recorded
in magnetic media form, and the software copy can be available upon request. The water quality data software format shall
be agreed with EPD. All the documents
and data shall be kept for at least one year after completion of the fill bank
contract.
10.10
Interim Notifications of Environmental
Quality Limit Exceedances
10.10.1 With
reference to Event/Action Plans in previous sections, when the environmental
quality limits are exceeded, the ET shall immediately notify the ER & EPD,
as appropriate. The notification shall
be followed up with advice to EPD on the results of the investigation, proposed
action and success of the action taken, with any necessary follow-up
proposals. A sample template for the
interim notifications is shown in Figure 10-1.
