1.1.1
Not applicable.
Hong Kong Link Road
1.1.2
Not applicable.
1.1.3
Not applicable.
1.1.4
Not applicable.
Hong Kong Boundary Crossing Facilities
1.15A This
Contract Specific Environmental Monitoring and Audit (EM&A) Manual is
prepared for Contract HY/2013/02 Hong Kong-Zhuhai-Macao Bridge Hong Kong
Boundary Crossing Facilities – Infrastructure Works Stage I (Western Portion)
(hereafter referred to as “the Contract”) for the Highways Department of Hong
Kong Special Administrative Region (HKSAR). The Contract was awarded to China
Harbour Engineering Company Limited (hereafter referred to as “the
Contractor”) and ETS-Testconsult
Limited was appointed as the Independent Environmental Team (ET) by the
Contractor.
1.16A The
Contract is part of Hong Kong – Zhuhai – Macao Bridge Hong Kong Boundary
Crossing Facilities (HKBCF) which is “Designated Projects”, under Schedule 2 of
the Environmental Impact Assessment Ordinance (EIAO) (Cap 499). An Environmental Impact Assessment (EIA)
Report together with an EM&A Manual (hereafter referred to as approved
EM&A Manual) (Register No. AEIAR-145/2009) was prepared for the Project and
approved by Environmental Protection Department (EPD). These documents are
available through the EIAO Register.
1.17A This
Contract Specific EM&A Manual is to outline the monitoring and audit
programme to be undertaken during the course of the construction works and
provide systematic procedures for monitoring, auditing and minimization of the
environmental impacts associated with the constriction. The Site Area of the
Contract is shown in Appendix A.
1.2.1 The
purposes of the EM&A Manual are to:
l
Guide
the set up of an EM&A programme to ensure compliance with the EIA
recommendations;
l
Specify
the requirements for monitoring equipment;
l
Propose
environmental monitoring points, monitoring frequency etc.;
l
Propose
Action/Limit Level; and
l
Propose
Event/Action Plan.
l
Assess
the effectiveness of the recommended mitigation measures.
1.2.2 This
Manual outlines the monitoring and audit programme for the construction of the
Contract and provide systematic procedures for monitoring, auditing and
minimising environmental impacts.
1.2.3
Hong Kong environmental regulations and the Hong Kong Planning Standards and
Guidelines (HKPSG) have served as environmental standards and guidelines in the
preparation of this Manual. In
addition, this Contract Specific EM&A Manual has been prepared in
accordance with the requirements stipulated in Annex 21 of the Technical
Memorandum on the EIA Process (TM-EIAO).
1.2.4 This
Manual contains of the following information:
l Responsibilities of the
Contractor, the Engineer or Engineer’s Representative (ER), Environmental Team
(ET), and the Independent Environmental Checker (IEC) under the context of the
EM&A;
l Role of the Environmental
Protection Office (ENPO);
l Project organization for
the EM&A works;
l The basis for, and
description of the broad approach underlying the EM&A programme;
l Details of the methodologies
to be adopted, including all laboratories and analytical procedures, and
details on quality assurance and quality control programme;
l The rationale on which the
environmental monitoring data will be evaluated and interpreted;
l Definition of Action and
Limit levels;
l Establishment of Event and
Action plans;
l Requirements for reviewing
pollution sources and working procedures required in the event of
non-compliance with the environmental criteria and complaints; and
l Requirements for
presentation of environmental monitoring and audit data and appropriate
reporting procedures.
l Requirements for reviewing
the EIA predictions and the effectiveness of mitigations measures,
environmental management system and the EM&A programme.
1.2.5 For
the purpose of this manual, the ER shall refer to the Engineer as defined in
the Construction Contract, in cases where the Engineer’s powers have been
delegated to the ER, in accordance with the Construction Contract. The ET Leader, who shall be responsible
for and in charge of the ET, shall refer to the person delegated the role of
executing the environmental monitoring and audit requirements.
Hong
Kong Link Road
2.1.1 Not
applicable.
Hong
Kong Boundary Crossing Facilities
2.1.2A The
proposed works under this Contract comprise the following:
(i) Construction of the viaducts
and roads at the western portion of Hong Kong Boundary Crossing Facilities
(HKBCF) mainly for connection with the Hong Kong – Zhuhai – Macao Bridge (HZMB),
Hong Kong Link Road (HKLR), Hong Kong International Airport (HKIA) and the Tuen
Mun-Chek Lap Kok Link (TM-CLKL);
(ii) Construction of the road
modification at the SkyCity Interchange at Airport Island;
(iii) Construction of associated street
lighting, street furniture, road marking, road signage, drainage, sewerage,
fresh water and flushing water supply, irrigation, landscape, electrical and
mechanical (E&M), utilities and services works;
(iv) Provisioning of civil engineering works
and power supply installation for the Traffic Control and Surveillance System
(TCSS); and
(v) Other works in accordance with the
Contracts.
2.2.1A The Construction of
this contract will start in the 3rd quarter of 2014 and tentatively completed
in the 4th quarter of 2017
2.2.2 Appendix B illustrates the tentative
construction programme for the Contract. All the key construction activities
are shown with the tentative dates for commencement and completion.
2.2.3 Detailed
EIA assessments have been conducted and presented in the EIA report. All necessary mitigation measures have
been identified and recommended.
The Environmental Mitigation Implementation Schedule (EMIS) is given in Appendix C. It specifies the extent,
locations, time frame and responsibilities for the implementation of the
environmental mitigation measures identified.
2.3.1A The
advance works of Tuen Mun Check Lap Kok Link (TMCLKL), i.e. reclamation works
of the southern landfall of the TMCLKL sub-sea tunnel commenced in late 2011.
The southern connection of the TMCLKL was scheduled to complete in 2016 to
tally with the commissioning of the HZMB, and to complete the northern
connection in 2018. The
Construction of Hong Kong Link Road (HKLR) commenced in Year 2012 and is
scheduled to complete in Year 2016.
2.3.2 The
Main Bridge of the HZMB within the Guangdong water would also be concurrent
with the construction of HKBCF and southern landfall of TMCLKL. The tentative
commissioning date is also 2016.
2.3.3 Another
concurrent project during the construction of HKBCF is the 72 ha reclamation
for Lantau Logistics Park. This has
been considered as a concurrent project in the EIA.
3.1.1 The
proposed project organization and lines of communication with respect to
environmental protection works are shown in Appendix D.
3.1.2 The
leader of the ET shall be an independent party from the Contractor and has
relevant professional qualifications, or have sufficient relevant EM&A
experience subject to approval of the Engineer’s Representative (ER) and EPD.
3.1.3.1 The Contractor
l Employ an Environmental
Team (ET) to undertake monitoring, laboratory analysis and reporting of
environmental monitoring and audit;
l Provide assistance to ET,
IEC and ENPO in carrying out monitoring and auditing;
l Provide site and works
information upon the request of ET, IEC or ENPO within two working days of such
request;
l Participate in site
inspections undertaken by the ET, as required, and undertake any corrections as
instructed by the Engineer;
l Submit proposals on
mitigation measures in case of exceedances of Action and Limit levels in
accordance with the Event and Action Plans;
l Implement measures to
reduce impact where Action and
Limit levels are exceeded; and
l Adhere to the procedures
for environmental complaint investigation as set out in Section 15.3 of this
EM&A Manual.
l Adhere to the agreed
procedures for carrying out complaint investigation.
3.1.3.2 The Environmental Team (ET)
l Set up all the required
environmental monitoring stations;
l Monitor various
environmental parameters as required in the EM&A Manual;
l Analyse the environmental
monitoring and audit data and review the success of EM&A programme to
confirm the adequacy of mitigation measures implemented and the validity of EIA
predictions, and to identify any adverse environmental impacts arising;
l To conduct environmental
investigation and submit the ET Leader certified investigation report to the
Contractor, IEC, ENPO and ER upon receive of environmental enquiry and/or
complaint;
l Carry out site inspection
to investigate and audit the Contractors' site practice, equipment and work
methodologies with respect to pollution control and environmental mitigation,
and take proactive actions to pre-empt problems;
l Audit and prepare audit
reports on the environmental monitoring data and site environmental conditions
l Report on the environmental
monitoring and audit results to the IEC, ENPO, Contractor, the ER and EPD or
its delegated representative;
l Recommend suitable
mitigation measures to the Contractor in the case of exceedance of Action and
Limit levels in accordance with the Event and Action Plans;
l Undertake regular on-site
audits/inspections and report to the Contractor, IEC, ENPO and the ER of any
potential non-compliance; and
l Follow up and close out
non-compliance actions.
3.1.3.3 Engineer or Engineer’s Representative
l Supervise the Contractor’s activities and ensure that the
requirements in the EM&A
Manual are fully complied with;
l Inform the Contractor when
action is required to reduce impacts in accordance with the Event and Action
Plans;
l Assists the IEC and ENPO to
audit the results of the EM&A works carried out by the ET; and
l Comply with the agreed
Event and Action Plan in the event of any exceedance.
3.1.3.4 Independent Environmental Checker
l Review the EM&A works
performed by the ET (at not less than monthly intervals);
l Audit the monitoring
activities and results (at not less than monthly intervals);
l Report the audit results to
the ER and EPD in parallel;
l Review the EM&A reports
(monthly and quarterly summary reports) submitted by the ET;
l Review the proposal on
mitigation measures submitted by the Contractor in accordance with the Event
and Action Plans;
l Check the mitigation
measures that have been recommended in the EIA and this Manual, and ensure they
are properly implemented in a timely manner, when necessary; and
l Report the findings of site
inspections and other environmental performance reviews to ER and EPD.
3.1.3.5 Environmental Protection Office (ENPO)
Notwithstanding
the above, given that the TMCLKL, HKBCF and HKLR will be constructed
concurrently, an ENPO or equivalent to oversee the cumulative construction
projects in North Lantau area will be established by the Project Proponent. The
responsibility of the ENPO would be similar to that of the IEC but should also
include:
l coordinate the monitoring
and auditing works for all the on-going projects in the area in order to
identify possible sources/causes of exceedances and recommend suitable remedial
actions where appropriate;
l review cumulative impacts
including possible sources/causes of exceedance and recommending suitable
remedial actions;
l liaise with the mainland
project teams for HZMB Main Section to identify and assess any cross-boundary
cumulative impacts in order to establish suitable remedial actions where
necessary; and
l coordinate the assessment
and response to complaints/enquires from locals, green groups, district
councils or the public at large.
The
exact responsibilities and organization of the ENPO have been defined by the
Project Proponent in accordance with the relevant Environmental Permits.
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
responsibilities, as required under the EM&A programme for the duration of
the Project.
3.1.5 The
ET Leader shall have at least 7 years if experience in conducting EM&A for
infrastructure projects. His
qualification shall be vetted by the ER and the IEC.
4.1.1 The
Contractor shall prepare the Environmental Management Plan (including a Waste
Management Plan), Construction Method Statement and obtain approval from ER,
IEC and relevant authorities to encompass the recommended environmental
protection / mitigation measures with respect to their latest construction
methodology and programme. All environmental submission shall be certified by
the ET leader before seeking the IEC’s verification.
4.2.1 A
systematic Environmental Management Plan (EMP) shall be set up by the
Contractor to ensure effective implementation of the mitigation measures,
monitoring and remedial requirements presented in the EIA, EM&A and EMIS.
The ER and the IEC will audit the implementation status against the EMP and
advise the necessary remedial actions required. These remedial actions shall be
enforced by the ER through contractual means.
4.2.2 The
EMP will define in details how the Contractor (together with its
sub-contractors) implements the recommended mitigation measures in order to
achieve the environmental performance defined in the Hong Kong environmental
legislation and the EIA documentation.
4.2.3 The
review of on-site environmental performance shall be undertaken by ER and IEC
through a systematic checklist and audit once the construction commences. The
environmental performance review programme comprises a regular assessment on
the effectiveness of the EMP. Reference should be made to Environment,
Transport and Works Bureau Technical Circular (Works) No. 19/2005
“Environmental Management on Construction Sites” or its latest versions, and
any other relevant Technical Circulars.
4.3.1 As
part of the EMP, the Contractor shall include a WMP for the construction of the
assignment and submit to the ET, IEC and EPD for approval. Where waste generation is unavoidable,
the opportunities for recycling or reusing should be maximised. If wastes
cannot be recycled, recommendations for appropriate disposal routes should be
provided in the WMP. A method statement for stockpiling and transportation of
the excavated materials and other construction wastes should also be included
in the WMP and approved before the commencement of construction. All mitigation measures arising from the
approved WMP shall be fully implemented.
4.3.2 For
the purpose of enhancing the management of Construction and Demolition
(C&D) materials including rock, and minimising its generation at source,
construction would be undertaken in accordance with the Environment, Transport
and Works Bureau Technical Circular (Works) No. 33/2002 - Management of
Construction and Demolition Material Including Rock, or its latest versions.
The management measures stipulated in the Technical Circular should be
incorporated into the WMP.
4.4.1 In
case the Contractor would like to adopt alternative construction methods or
implementation schedules, it is required to submit details of methodology and
equipment to the ER for approval before the work commences. Any changes in construction method shall
be reflected in a revised EMP or the Contractor will be required to demonstrate
the manner in which the existing EMP should accommodate the proposed changes.
The Contractor may need to apply for a Further Environmental Permit (FEP) from
EPD before commencement of any construction activities.
5.1.1 Monitoring
and audit of the Total Suspended Particulates (TSP) levels shall be carried out
by the ET to ensure that any deteriorating air quality could be readily
detected and timely action taken to rectify the situation.
5.1.2 1-hour
and 24-hour TSP levels should be measured to indicate the impacts of
construction dust on air quality. The 24-hour TSP levels shall be measured by
following the standard high volume sampling method as set out in the Title 40
of the Code of Federal Regulations, Chapter 1 (Part 50), Appendix B. Upon
approval of the IEC, 1-hour TSP levels can 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.
5.1.3 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 any other local atmospheric factors affecting or
affected by site conditions, etc., shall be recorded down in detail. A sample
data sheet is shown in Appendix E.
5.2.1 High
volume samplers (HVSs) complying with the following specifications shall be
used for carrying out the 1-hour and 24-hour TSP monitoring:
a)
0.6 - 1.7 m3 per minute adjustable flow
range;
b)
equipped with a timing / control device with +/- 5
minutes accuracy for 24 hours operation;
c)
installed with elapsed-time meter with +/- 2 minutes
accuracy for 24 hours operation;
d)
capable of providing a minimum exposed area of 406 cm2;
e)
flow control accuracy: +/- 2.5% deviation over 24-hour
sampling period;
f)
equipped with a shelter to protect the filter and
sampler;
g)
incorporated with an electronic mass flow rate
controller or other equivalent devices;
h)
equipped with a flow recorder for continuous
monitoring;
i)
provided with a peaked roof inlet;
j)
incorporated with a manometer;
k)
able to hold and seal the filter paper to the sampler
housing at horizontal position;
l)
easily changeable filter; and
m) capable
of operating continuously for a 24-hour period.
5.2.2 The ET is responsible for the
provision, installation, operation, maintenance, dismantling of the monitoring
equipment. They shall ensure that sufficient number of HVSs with an appropriate
calibration kit is available for carrying out the baseline monitoring, regular
impact monitoring and ad hoc monitoring. The HVSs shall be equipped with an
electronic mass flow controller and be calibrated against a traceable standard
at regular intervals. All the equipment, calibration kit, filter papers, etc.,
shall be clearly labelled.
5.2.3 Initial calibration of dust
monitoring equipment shall be conducted upon installation and thereafter at
bi-monthly intervals. The transfer standard shall be traceable to the
internationally recognized primary standard and be calibrated annually. The ET
shall provide the relevant calibration data and
laboratory calibration certificate which should be properly document for future reference
by the IEC and other concerned parties. All the data should be converted into
standard temperature and pressure condition.
5.2.4 The flow-rate of the sampler
before and after the sampling exercise with the filter in position shall be
verified to be constant and be recorded in the data sheet as mentioned in Appendix E.
5.2.5A If the ET leader proposes alternative dust
monitoring equipment / methodology (e.g. use a direct reading dust meter to
measure 1-hour TSP levels) after the approval of this EM&A manual, he shall seek approval from the
IEC by submitting sufficient information to the IEC indicating that the instrument is
capable of achieving a comparable result to the HVS.. The instrument should
also be calibrated regularly as specified by equipment’s manufacturer, in which
calibration certificate shall be submitted to IEC for Approval. The 1-hour
sampling shall also be determined periodically by the HVS to check the validity
and accuracy of the results measured by direct reading method, and the checking
result shall also submitted to the IEC for approval.
5.2.6 Wind data monitoring equipment
shall also be provided and set up set up for logging wind speed and wind
direction near the dust monitoring locations. The equipment installation
location shall be proposed by the ET and agreed with the IEC. For installation
and operation of wind data monitoring equipment, the following points shall be
observed:
a)
The wind sensors should be installed 10 m above ground
so that they are clear of obstructions or turbulence caused by buildings.
b)
The wind data should be captured by a data logger. The
data shall be downloaded for analysis at least once a month.
c)
The wind data monitoring equipment should be
re-calibrated at least once every six months.
d)
Wind direction should be divided into 16 sectors of
22.5 degrees each.
5.2.7 In exceptional situations, the
ET may propose alternative methods to obtain representative wind data upon
approval from the ER and agreement form the IEC.
5.3.1 A clean laboratory with constant
temperature and humidity control, and equipped with necessary measuring and
conditioning instruments to handle the dust samples collected, shall be
available for sample analysis, and equipment calibration and maintenance. The
laboratory should be HOKLAS board accredited.
5.3.2 If a site laboratory is set up
or a non-HOKLAS accredited laboratory is hired for carrying out the laboratory
analysis, the laboratory equipment shall be approved by the ER and the
measurement procedures shall be witnessed by the IEC. Any measurement performed
by the laboratory shall be demonstrated to the satisfaction of the ER and IEC.
IEC shall regularly audit to the measurement performed by the laboratory to
ensure the accuracy of measurement results. The ET Leader 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.
5.3.3 Filter paper of size 8" x
10" shall be labelled before sampling. It shall be a clean filter paper
with no pinholes, and shall be conditioned in a humidity-controlled chamber for
over 24-hours and be pre-weighed before use for the sampling.
5.3.4 After sampling, the filter paper
loaded with dust shall be kept in a clean and tightly sealed plastic bag. The
filter paper shall then be returned to the laboratory for reconditioning in the
humidity-controlled chamber followed by accurate weighing by an electronic
balance with readout down to 0.1 mg. The balance shall be regularly calibrated
against a traceable standard.
5.3.5 All the collected samples shall
be kept in a good condition for 6 months before disposal.
5.4.1 Figure 1 shows the locations of the proposed dust monitoring
station for the Contract. The status and locations of dust sensitive receivers
may change after issuing this Manual. If such cases exist, the ET Leader shall
propose updated monitoring locations and seek approval from ER and agreement
from the IEC.
Table 5.1 Construction Dust
Monitoring Locations
|
ID
|
Location Description
|
|
AMS 6(1)
|
Dragonair/CNAC (Group) Building
|
|
AMS 7A(1)
|
Chu Kong Air-Sea Union Transportation Co. Ltd
|
Remarks:
(1)
The
ET of this Contract should conduct impact air quality monitoring at the AMS
listed in the table as part of EM&A programme according to the latest
notification from ENPO when the monitoring station(s) is/are no longer covered
by another ET of the HZMB project. The ET of the Contract shall communicate and
share the monitoring data to the ET(s) of other works contracts if the air
quality monitoring station(s) is/are as part of EM&A programme.
5.4.2 If alternative monitoring
locations are proposed due to the situation mentioned in para 5.4.1, the
proposed site should be selected based on the following principle:
a)
Situating at the site boundary or such locations close
to the major dust emission source(s);
b)
Monitoring as close as possible to the sensitive
receptor(s);
c)
Taking into account the prevailing meteorological
conditions; and
d)
Assuring minimal disturbance to the occupants and
working under a safe condition during monitoring.
5.4.3 The ET shall agree with the ER
in consultation with the IEC on the position of the HVS for the installation of
the monitoring equipment. When positioning the samplers, the following points
shall be noted:
a)
a horizontal platform with appropriate support to
secure the samplers against gusty wind should be provided;
b)
no two samplers should be placed less than 2 meters
apart;
c)
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;
d)
a minimum of 2 meters of separation from walls,
parapets and penthouses is required for rooftop samplers;
e)
a minimum of 2 meters separation from any supporting
structure, measured horizontally is required;
f)
no furnace or incinerator flue is nearby;
g)
airflow around the sampler is unrestricted;
h)
the sampler is more than 20 meters from the dripline;
i)
any wire fence and gate, to protect the sampler,
should not cause any obstruction during monitoring;
j)
permission must be obtained to set up the samplers and
to obtain access to the monitoring stations; and
k)
a secured supply of electricity is needed to operate
the samplers.
5.4.4 The ENPO may, depending on site
conditions and monitoring results, decide whether additional monitoring
locations shall be included or any monitoring locations could be removed/
relocated during any stage of the construction phase.
5.5.1 Baseline monitoring shall be
carried out at all of the designated monitoring locations (see Table 5.1) for
at least 14 consecutive days prior to the commissioning of major construction
works to obtain daily 24-hour TSP samples. The selected baseline monitoring
stations should reflect baseline conditions at the impact stations. One-hour
sampling should also be done at least 3 times per day while the highest dust
impact is expected.
5.5.2 During the baseline monitoring,
there should not be any major construction or dust generation activities in the
vicinity of the monitoring stations. Before commencing baseline monitoring, the
ET shall inform the IEC of the baseline monitoring programme such that, if
required, the ER can conduct on-site audit to ensure accuracy of the baseline
monitoring results.
5.5.3 In case the baseline monitoring
cannot be carried out at the designated monitoring locations, the ET Leader
shall carry out the monitoring at alternative locations that can effectively
represent the baseline conditions at the impact monitoring locations. The
alternative baseline monitoring locations shall be approved by the ER and
agreed with the IEC.
5.5.4 In exceptional cases, when
insufficient baseline monitoring data or questionable results are obtained, the
ET shall liaise with the IEC and EPD to agree on an appropriate set of data to
be used as a baseline reference and submit to ER for approval.
5.5.5 Ambient conditions may vary
seasonally and shall be reviewed once every three months. When the ambient
conditions have changed and a repeat of the baseline monitoring is required to
be carried out for obtaining the updated baseline levels, the monitoring should
be at times when the Contractor's activities are not generating dust, at least
in the proximity of the monitoring stations. Should change in ambient
conditions be determined, the baseline levels and, in turn, the air quality
criteria, should be revised. The revised baseline levels and air quality
criteria should be agreed with the IEC and EPD.
5.5.6 It is noted that baseline
monitoring was undertaken for the Project between September and November 2011
under Agreement CE No. 35/2011 (EP) Baseline Environmental monitoring for Hong
Kong – Zhuhai – Macao Bridge Hong Kong Projects – Investigation prior to the
construction of the Project. The
baseline monitoring results obtained under Agreement CE No. 35/2011(EP) will be
adopted for this Contract.
5.6.1 The
ET shall carry out impact monitoring during the entire construction period. For
regular impact monitoring, the sampling frequency of at least once in every 6
days, shall be strictly observed at all the monitoring stations for 24-hour TSP
monitoring. For 1-hour TSP monitoring, the sampling frequency of at least 3
times in every 6 days should be undertaken when the highest dust impact occurs.
Before commencing impact monitoring, the ET shall inform the IEC of the impact
monitoring programme such that the IEC can conduct on-site audit to ensure
accuracy of the monitoring results.
5.6.2 The
specific time to start and stop the 24-hour TSP monitoring shall be clearly
defined for each location and be strictly followed by the ET.
5.6.3 In
case of non-compliance with the air quality criteria, more frequent monitoring,
as specified in the Action Plan in the following section, shall be conducted
within the specified timeframe after the result is obtained. This additional
monitoring shall be continued until the excessive dust emission or the
deterioration in air quality is rectified, and agreed with the ER and the IEC.
5.7.1 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 5.2 shows the air quality
criteria, namely Action and Limit levels to be used.
Table
5.2 Action and Limit Levels for Air Quality
|
Parameter
|
Action
Level
|
Limit
Level
|
|
24-hour
TSP Level in µg/m3
|
For
baseline level ≤ 200 µg/m3, Action level = (baseline level * 1.3 +
Limit level)/2; For baseline level > 200 µg/m3, Action level =
Limit Level
For
Monitoring station AMS6 Action Level =(66.4*1.3+260)/2 = 173 µg/m3
For
Monitoring station AMS7 Action Level =(82.3*1.3+260)/2 = 183 µg/m3
|
260 µg/m3
|
|
1-hour
TSP Level in µg/m3
|
For
baseline level ≤ 384 µg/m3, Action level = (baseline level * 1.3 +
Limit level)/2;
For
baseline level > 384 µg/m3, Action level = Limit Level
For
Monitoring station AMS6 Action Level =(169.2*1.3+500)/2 = 360 µg/m3
For
Monitoring station AMS7 Action Level =(184.2*1.3+500)/2 = 370 µg/m3
|
500 µg/m3
|
5.8.1 Should non- compliance of the
air quality criteria occur, actions in accordance with the Action Plan in Table 5.3 shall be carried out.
Table 5.3
Event/Action Plan for Air Quality
|
EVENT
|
ACTION
|
|
ET
|
IEC
|
ER
|
CONTRACTOR
|
|
ACTION LEVEL
|
|
1.
Exceedance for one sample
|
1.
Identify source, investigate the causes of exceedance and propose remedial
measures;
2.
Inform IEC and ER;
3.
Repeat measurement to confirm finding;
4.
Increase monitoring frequency to daily.
|
1.
Check monitoring data submitted by ET;
2.
Check Contractor’s working method.
|
1.
Notify Contractor.
|
1.
Rectify any
2.
unacceptable practice;
3.
Amend working methods if appropriate.
|
|
2. Exceedance
for two or more consecutive samples
|
1.
Identify source;
2.
Inform IEC and ER;
3.
Advise the ER on the effectiveness of the proposed remedial measures;
4.
Repeat measurement s to confirm
findings;
5.
Increase monitoring frequency to daily;
6.
Discuss with IEC and
Contractor on remedial actions required;
7.
If exceedance continues, arrange meeting with
IEC and ER;
8.
If exceedance
stops, cease additional monitoring.
|
1.
Check monitoring
data submitted by ET;
2.
Check Contractor’s working method;
3.
Discuss with ET and
Contractor on possible remedial measures;
4.
Advise the ER on the effectiveness of the proposed remedial measures;
5.
Supervise Implementation of remedial measures.
|
1.
Confirm receipt of notification of failure in writing;
2.
Notify
Contractor;
3.
Ensure remedial measures properly implemented.
|
1.
Submit proposals for remedial
to ER within 3 working days of notification;
2.
Implement the agreed proposals;
3.
Amend proposal if appropriate.
|
|
LIMIT LEVEL
|
|
1. 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;
Assess effectiveness of Contractor’s remedial actions and keep IEC,
EPD and ER informed of the results.
|
1.
Check monitoring data submitted by ET;
2.
Check Contractor’s working method;
3.
Discuss with ET and Contractor on possible
remedial measures;
4.
Advise the ER on the effectiveness of the
proposed remedial measures;
5.
Supervise implementation of remedial measures.
|
1.
Confirm receipt of notification
of failure in writing;
2.
Notify
Contractor;
3.
Ensure remedial measures properly implemented.
|
1.
Take immediate
action to avoid further exceedance;
2.
Submit proposals for remedial actions to
IEC within 3
working days of
notification;
3.
Implement the agreed
proposals;
4.
Amend proposal if
appropriate.
|
|
EVENT
|
ACTION
|
|
ET
|
IEC
|
ER
|
CONTRACTOR
|
|
LIMIT LEVEL
|
|
2. Exceedance
for two
or more consecutive samples
|
1.
Notify IEC, ER,
Contractor
and EPD;
2.
Identify source;
3.
Repeat measurement to confirm findings;
4.
Increase monitoring frequency to daily;
5.
Carry out analysis of Contractor’s working
procedures to determine possible mitigation to be implemented;
6.
Arrange meeting with IEC and ER to discuss the
remedial actions to be taken;
7.
Assess effectiveness of Contractor’s remedial
actions and keep IEC, EPD and ER informed of the results;
8.
If exceedance stops, cease additional monitoring.
|
1. Discuss amongst ER, ET, and Contractor on the potential
remedial actions;
2.
Review Contractor’s remedial actions whenever necessary to assure their effectiveness and advise the ER
accordingly;
3.
Supervise the implementation of remedial measures.
|
1. Confirm receipt of notification
of failure in writing;
2.
Notify Contractor;
3.
In consultation with the IEC,
agree with the Contractor on the remedial measures to
be implemented;
4.
Ensure remedial measures properly implemented;
5.
If exceedance
continues, consider what portion of the work is
responsible
and instruct the
Contractor to stop that portion of
work until the
exceedance
is
abated.
|
1.
Take immediate
action to avoid further exceedance;
2.
Submit proposals for remedial actions to IEC within 3
working days of
notification;
3.
Implement the agreed
proposals;
4.
Resubmit proposals if problem still not
under control;
5.
Stop the relevant portion
of works as determined
by
the ER until the exceedance
is
abated
|
5.9.1 The approved EIA Report has
recommended dust control measures including 8 times of watering per day. Good
site practices such as road surface paving, dust enclosures, wheel wash
facilities would be implemented to reduce the generation of dust.
5.9.2 All
the proposed mitigation measures are summarized in the Environmental Mitigation
Implementation Schedule (EMIS) in Appendix
C.
5.10.1 The
Assignment, which involves multiple construction contracts, would be
constructed concurrently with other major infrastructures such as the HKLR and
TM-CLKL. These interface projects will be overviewed by the ENPO. The ENPO will
also oversee and coordinate the cumulative environmental issues arising from
the concurrent projects.
5.10.2 To
facilitate the ENPO to evaluate environmental impacts and investigate
complaints, the ET Leaders shall provide the impact air quality monitoring
results within one week after the monitoring event. If the 1-Hr TSP is measured
by direct reading, the results shall be submitted to ENPO in the next working
day. The ET Leader shall follow ENPO's requirements on the data submission
format and procedure" as per the current ET's practice and enable rapid
response by all concerned parties.
6.1.1 Construction
noise level shall be measured in terms of the A-weighted equivalent continuous
sound pressure level (Leq). Leq, 30 mins shall be used as
the monitoring parameter for the time period between 0700 and 1900 hours on
normal weekdays. For all other time periods, Leq 5 min shall be
employed for comparison with the Noise Control Ordinance (NCO) criteria.
6.1.2 As
supplementary information for data auditing, statistical results such as L10
and L90 shall also be obtained for reference.
6.2.1 As
referred to in the Technical Memorandum (TM) issued under the NCO, sound
level meters in compliance with the
International Electrotechnical Commission Publications 651: 1979 (Type 1) and
804: 1985 (Type 1) specifications shall be used for carrying out the noise
monitoring. Immediately prior to
and following each noise measurement, the accuracy of the sound level meter
shall be checked using an acoustic calibrator generating a known sound pressure
level at a known frequency. Measurements may be accepted as valid only if the
calibration level from before and after the noise measurement agrees to within
1.0 dB.
6.2.2 Noise
measurements should be made in accordance with standard acoustical principles
and practices in relation to weather conditions.
6.2.3 The
ET is responsible for the provision, installation, operation, maintenance,
dismantle of the monitoring equipment. He shall ensure that sufficient noise
measuring equipment and associated instrumentation are available for carrying
out the baseline monitoring, regular impact monitoring and ad hoc
monitoring. All the equipment and
associated instrumentation shall be clearly labeled.
6.2.4 Due
to rejection from Ho Yu College (NMS3) for setting up a noise monitoring
station at their school, an alternative location at site boundary of the ER’s
site office area at Works Area WA2 (NMS3B) is proposed. Same baseline and
Action and Limit Levels for noise, as derived from the baseline monitoring data
recorded at Ho Yu College, will be adopted for this alternative noise
monitoring location.
6.3.1 The
location of construction noise monitoring stations for the Contract are
presented in Table 6.1 and shown in Figure 2.
Table
6.1 Proposed Airborne Construction Noise Monitoring Locations
|
ID
|
Location Description
|
|
NMS2(1)
|
Seaview Crescent
|
|
NMS3B(1)(2)
|
Site Boundary of ER’s Site Office Area at Works Area
WA2
|
Remarks:
(1) The
ET of this Contract should conduct impact noise monitoring at the NMS listed in
the table as part of EM&A programme according to the latest notification
from ENPO when the monitoring station(s) is/are no longer covered by another ET
of the HZMB project. The ET of the
Contract shall communicate and share the monitoring data to the ET(s) of other
works contracts if the noise monitoring station(s) is/are as part of EM&A
programme.
(2) The
Action and Limit Levels for schools will be applied for this alternative
monitoring location.
6.3.2 The
ET shall select the monitoring location from the above table based on the
locations of the construction activities and seek approval from ER and
agreement from the IEC and EPD to the proposal. The monitoring location should
be chosen based on the following criteria:
l at locations close to the
major site activities which are likely to have noise impacts;
l close to the most affected
existing noise sensitive receivers; and
l for monitoring locations
located in the vicinity of the sensitive receivers, care should be taken to
cause minimal disturbance to the occupants during monitoring.
6.3.3 The
monitoring station shall normally be at a point 1 m from the exterior of the
sensitive receiver building facade and be at a position 1.2 m above the
ground. If there is problem with
access to the normal monitoring position, an alternative position may be
chosen, and a correction to the measurements shall be made. For reference, a
correction of +3 dB(A) shall be made to the free field measurements. The ET
shall agree with the IEC on the monitoring position and the corrections
adopted. Once the positions for the monitoring stations are chosen, the
baseline monitoring and the impact monitoring shall be carried out at the same
position.
6.3.4 The
ENPO may, depending on site conditions and monitoring results, decide whether
additional monitoring locations shall be included or any monitoring locations
could be removed/ relocated during any stage of the construction phase.
6.4.1 The
ET shall carry out baseline monitoring prior to the commencement of the
construction works. There shall not be any construction activities in the
vicinity of the stations during the baseline monitoring. Continuous baseline
noise monitoring for the A-weighted levels Leq, L10 and L90
shall be carried out daily for a period of at least two weeks in a sample
period of 5 minutes or 30 minutes between 07:00 and 19:00, and 5 minutes
between 19:00 and 07:00. A schedule on the baseline monitoring shall be
submitted to the ER and IEC for approval before the monitoring starts.
6.4.2 In
exceptional cases, when insufficient baseline monitoring data or questionable
results are obtained, the ET shall liaise with the IEC and EPD to agree on an
appropriate set of data to be used as a baseline reference and submit to the ER
for approval.
6.4.3 It
is noted that baseline monitoring was undertaken for the Project between
September and November 2011 under Agreement CE No. 35/2011 (EP) Baseline
Environmental monitoring for Hong Kong – Zhuhai – Macao Bridge Hong Kong
Projects – Investigation prior to the construction of the Project. The baseline monitoring results obtained
under Agreement CE No. 35/2011(EP) will be adopted for this Contract.
6.5.1 During
normal construction working hour (07:00-19:00 Monday to Saturday), monitoring
of Leq, 30 minutes noise levels (as six consecutive Leq,
5 minutes readings) shall be carried out at the agreed monitoring locations
once every week in accordance with the methodology in the TM.
6.5.2 If
a school exists near the construction activity, noise monitoring shall be
carried out at the monitoring stations for the schools during the school
examination periods. The ET Leader shall liaise with the school’s personnel and
the Examination Authority to ascertain the exact dates and times of all
examination periods during the course of the contract.
6.5.3 In
case of non-compliance with the construction noise criteria, more frequent
monitoring, as specified in the Action Plan, shall be carried out. This
additional monitoring shall be continued until the recorded noise levels are
rectified or proved to be irrelevant to the construction activities.
6.5.4 A
schedule on the compliance monitoring shall be submitted to the ER and IEC for
approval before the monitoring starts.
6.6.1 The
Action and Limit Levels for construction noise are defined in Table 6.2. Should non-compliance of the
criteria occur, actions in accordance with the Action Plan in Table 6.3 shall be carried out.
Table
6.2 Action and Limit Levels for Construction Noise
|
Parameter
|
Action
Level
|
Limit
Level
|
|
07:00
– 19:00 hours on normal weekdays
|
When
one documented complaint is received
|
75 dB(A)*
|
Note :
If works are to be carried out during restricted
hours, the conditions stipulated in the construction noise permit issued by the
Noise Control Authority have to be followed.
* Reduce to 70 dB(A) for schools and 65 dB(A) during
school examination period.
Table
6.3 Event / Action Plan for Construction Noise Monitoring
|
EVENT
|
ACTION
|
|
ET
|
IEC
|
ER
|
CONTRACTOR
|
|
Action
Level
|
1.
Notify IEC and Contractor;
2.
Identify source, investigate the causes of exceedance and
propose remedial measures;
3.
Report the results of
investigation to the IEC, ER and
Contractor;
4.
Discuss with the Contractor and formulate remedial
measures;
5.
5 Increase monitoring frequency to check mitigation effectiveness.
|
1.
Review the analysed results submitted by the ET;
2.
Review the proposed remedial measures by the Contractor and
advise the ER
accordingly;
3.
Supervise the implementation of remedial measures.
|
1.
Confirm receipt of
notification of
failure in writing;
2.
Notify Contractor;
3.
Require Contractor to propose remedial measures for the
analysed noise problem;
4.
Ensure remedial measures are
properly implemented.
|
1.
Submit noise mitigation
proposals to IEC;
2.
Implement noise mitigation
proposals.
|
|
Limit Level
|
1.
Inform IEC, ER, EPD
and
Contractor;
2.
Identify source;
3.
Repeat measurements to confirm findings;
4.
Increase monitoring frequency;
5.
Carry out analysis of Contractor’s working
procedures to determine possible mitigation to be implemented;
6.
Inform IEC, ER and EPD the causes and actions
taken for the exceedances;
7.
Assess effectiveness of Contractor’s remedial
actions and keep IEC, EPD and ER informed of the results;
8.
If exceedance stops, cease additional monitoring.
|
1.
Discuss amongst ER, ET, and Contractor on the
potential remedial actions;
2.
Review Contractors remedial actions whenever
necessary to assure their effectiveness and advise the ER accordingly;
3.
Supervise the implementation of remedial measures.
|
1.
Confirm receipt of notification of failure in
writing;
2.
Notify Contractor;
3.
Require Contractor to propose remedial measures
for the analysed noise problem;
4.
Ensure remedial measures properly implemented;
5.
If exceedance continues, consider what portion of
the work is responsible and instruct the Contractor to stop that portion of
work until the exceedance is abated.
|
1.
Take immediate action to avoid further
exceedance;
2.
Submit proposals for remedial actions to IEC
within 3 working days of notification;
3.
Implement the agreed proposals;
4.
Resubmit proposals if problem still not under
control;
|
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