Agreement No. CE 13/2009 (WS)
In-situ Reprovisioning of Sha Tin
Water Treatment Works ¡V South Works
Environmental
Monitoring and Audit Manual
TABLE OF CONTENTS
Monitoring Parameters and Equipment
Laboratory Measurement / Analysis
Operation Noise ¡V Fixed Plant
Laboratory Measurement / Analysis
5. waste
management implications
Monitoring and Audit Requirements
Monitoring and Audit Requirements
Mitigation and Good Practice Measures
Compliance with Legal and Contractual Requirements
Subsequent Monthly EM&A Reports
Final EM&A Review Report - Construction Phase
Interim Notifications of Environmental Quality Limit
Exceedances
List of
Tables
Table
2.1 Proposed Dust Monitoring Stations
Table
2.2 Summary of Construction Dust Monitoring Programme
Table
2.3 Proposed Action and Limit Levels for Impact Monitoring
Table
2.4 Event and Action Plan for Construction Dust Monitoring
Table
3.1 Proposed Noise Monitoring Stations during Construction Phase
Table
3.2 Action and Limit Levels for Construction Noise Impact Monitoring
Table
3.3 Event and Action Plan for Construction Noise Monitoring
Table
4.1 Proposed Water Quality Monitoring Stations
Table
4.2 Analytical Methods to be Applied to Water Quality Samples
Table
4.3 Action and Limit Levels for Water Quality
Table
4.4 Event and Action Plan for Water Quality
Table
7.1 Proposed Landscape and Visual Mitigation Measures for Construction Phase
Table
7.2 Proposed Landscape and Visual Mitigation Measures for Operation Phase
List of
Figures
Figure 1 Location
Plan and the Major Scope of Works
Figure 3 Locations
of Proposed Dust Monitoring Stations
Figure 4 Locations
of Proposed Noise Monitoring Stations
Figure 5 Locations
of Proposed Water Quality Monitoring Stations
List of
Appendices
Appendix A Construction
Programme
Appendix B1 Data
Record Sheet for TSP Monitoring
Appendix B2 Construction
Noise Monitoring Field Record Sheet
Appendix B3 Water
Quality Monitoring Data Record Sheet
Appendix C Implementation Schedule and Recommended
Mitigation Measures
Appendix D Sample of the Interim Notification
Abbreviation |
|
A/L |
Action and Limit |
AFCD |
Agriculture,
Fisheries and Conservation Department |
AL |
Action Level |
APHA |
American Public
Health Association |
|
|
BL |
Baseline Level |
|
|
CAR |
Contamination
Assessment Report |
CEDD |
Civil Engineering
and Development Department |
C&D |
Construction and
Demolition |
C&DMMP |
Construction and
Demolition Material Management Plan |
COCs |
Contaminants of
Concern |
|
|
DEP |
Director of
Environmental Protection |
DGPS |
Differential Global
Positioning System |
DO |
Dissolved Oxygen |
|
|
EIA |
Environmental
Impact Assessment |
EIAO-TM |
Technical
Memorandum on Environmental Impact Assessment Process |
EM&A |
Environmental
Monitoring and Audit |
EP |
Environmental
Permit |
EPD |
Environmental
Protection Department |
ER |
Engineer¡¦s
Representative |
ET |
Environmental Team |
|
|
GW-TM |
Technical
Memorandum on Noise from Construction Work other than Percussive Piling |
|
|
ICE |
Independent
Environmental Checker |
|
|
LL |
Limit Level |
|
|
NCO |
Noise Control
Ordinance |
NSR |
Noise Monitoring
Receiver |
|
|
OSHO |
Occupation Safety
and Health Ordinance |
|
|
PFC |
Public Filling
Committee |
PME |
Powered Mechanical
Equipment |
ProPECC |
Practice Note for
Professional Persons |
|
|
QA/QC |
Quality Assurance/
Quality Control |
|
|
RAP |
Remediation Action
Plan |
RR |
Remediation Report |
RSE |
Registered
Structural Engineers |
RTCM |
Radio Technical
Commission for Maritime |
|
|
SI |
Site Investigation |
South Works |
The Project |
SS |
Suspended Solids |
|
|
TM-DSS |
Technical
Memorandum on Standards for Effluents discharged into Drainage and Sewerage
Systems |
TSP |
Total Suspended
Particulates |
|
|
USEPA |
HVS method |
|
|
WHO |
World Health
Organization |
WPCO |
Water Pollution
Control Ordinance |
WMP |
Waste Management
Plan |
WSD |
Water Supplies
Department |
WTW |
Water Treatment
Works |
1.1
The
Sha Tin Water Treatment Works (WTW) was first commissioned in 1964. At that
time, it comprised the current South Works and the Administration Building with
a treatment capacity of 364,000 m3/day. To cope with the rapid increase in the
territory¡¦s water demand, the Sha Tin WTW underwent three stages of expansion
in 1973, 1976 and 1983 that are collectively called the North Works. The Sha Tin WTW is the largest WTW in Hong Kong with a treatment capacity of 1,227,000 m3/day
1.2
The
present operation of Sha Tin WTW can only maintain about 1,060,000 m3/day average output, due to the aging of
plant and equipment after more than 40 years of service. The plant therefore requires major
renovation or replacement.
1.3
In
addition, since the plant was first commissioned in 1964, the required treated
water quality requirements have also been raised to meet the latest
standards. The existing treated
water quality standards as specified by the Water Supplies Department (WSD), the authority in Hong Kong, is based on
the World Health Organization (WHO)¡¦s Guidelines for Drinking-water
Quality 2008, supplemented by an additional 10 parameters not included in the
Guidelines.
1.4
In order to mitigate the risk of reduction in
the supply quantity during reprovisioning of the South Works of the Sha Tin
WTW, and also to achieve a more reliable and balanced territory-wide water
supply system after the reprovisioning works, this Project only covers the
reprovisioning of the South Works, the most aging part of the plant while
maintaining the North Works in continuous operation. In addition, WSD would first increase
the treatment capacity of Tai Po WTW from 250,000 m3/day to a treatment capacity of 400,000 m3/day (this uprating work forms part of a
separate project) and then 800,000 m3/day in two stages to tie in with the staged
demolition of some of the facilities in the South Works to allow the in-situ
reprovisioning of Sha Tin WTW - South Works (hereinafter referred
as the Project) to proceed. Location of
the Project works is shown in Figure 1. The reprovisioned capacity of the South Works will be increased
from the original of 364,000 m3/day to 550,000 m3/day.
1.5
The Project comprises the following key elements:
(i) Demolition of the existing
facilities of the South Works and common facilities for both the South Works and
the North Works in phases;
(ii) Reprovisioning of the South
Works; and
(iii) Construction of new common facilities for both
the South Works and the North Works.
1.6
The construction works of the Project are
anticipated to commence on site in 2015, with completion of the Project by 2021. A construction programme is presented in
Appendix A
for reference.
1.7
The purpose of this Environmental Monitoring
and Audit (EM&A) Manual is to guide the set-up of an EM&A programme to check
on compliance with the Environmental Impact Assessment (EIA) study
recommendations of the Project, to assess the effectiveness of the recommended mitigation
measures, and to identify any further need for additional mitigation measures
or remedial actions.
1.8
This EM&A
Manual
aims to provide systematic procedures for monitoring, auditing and minimizing
environmental impacts associated with the activities of the Project. It outlines
the monitoring and audit programme for the Project.
1.9
Hong Kong environmental regulations have
served as environmental standards and guidelines in the preparation of this
Manual. In addition, the EM&A
Manual has been prepared in accordance with the requirements stipulated in
Annex 21 of the Technical Memorandum on Environmental Impact Assessment Process
(EIAO-TM).
1.10
This Manual contains the following
information:
Responsibilities of the Contractor, the
Engineer or Engineer¡¦s Representative (ER), the Environmental Team (ET), and
the Independent Environmental Checker (IEC) with respect to the environmental
monitoring and audit requirements during the course of the Project;
Project organisation for the Project;
Requirements with respect to the construction
programme schedule and the necessary environmental monitoring and audit
programme to track the varying environmental impact;
Details of the methodologies to be adopted,
including all field laboratories and analytical procedures, and details on
quality assurance and quality control programme;
The rationale on which the environmental
monitoring data will be evaluated and interpreted;
Definition of Action and Limit levels;
Establishment of Event and Action plans;
Requirements for reviewing pollution sources
and working procedures required in the event of non-compliance with the
environmental criteria and complaints;
Requirements for presentation of
environmental monitoring and audit data and appropriate reporting procedures;
and
Requirements for reviewing the EIA
predictions and the effectiveness of the mitigation measures / environmental
management systems and the EM&A programme.
1.11
This EM&A Manual is
a dynamic document that should be reviewed regularly and updated as necessary
during the construction and operation of the Project.
1.12
The roles and responsibilities of the various
parties involved in the EM&A process and the organisational structure of
the organisations responsible for implementing the EM&A programme are outlined
below. The proposed project organisation and lines of communication with
respect to environmental protection works are shown in Figure 2.
Engineer or
Engineer¡¦s Representative (ER)
1.13
The Engineer is responsible for overseeing the construction works and for ensuring that the works are
undertaken by the Contractor in accordance with the specification and
contractual requirements. The duties and responsibilities of the Engineer with
respect to EM&A may include:
Supervise the Contractor¡¦s activities and
ensure that the requirements in the EM&A Manual are fully complied with;
Inform the Contractor when action is required
to reduce environmental impacts in accordance with the Event and Action Plans;
Participate in joint site inspections and
audits undertaken by the ET; and
Adhere to
the procedures for carrying out complaint investigations.
The
Contractor
1.14
The Contractor should
report to the ER. The duties and responsibilities of the Contractor are:
Implement the EIA recommendations and
requirements;
Provide assistance to the ET in carrying out relevant
environmental monitoring;
Submit proposals on mitigation measures in
case of exceedances of Action and Limit levels, in accordance with the Event
and Action Plans;
Implement measures to reduce environmental impacts
where Action and Limit levels are exceeded until the events are resolved; and
Adhere to
the procedures for carrying out environmental complaint investigation in
accordance with Section 11 of this Manual.
Environmental
Team (ET)
1.15
The ET should conduct
the EM&A programme and ensure the Contractor¡¦s compliance with the Project¡¦s
environmental performance requirements during construction. The ET should be an independent party
from the Contractor.
1.16
The ET should be led and
managed by the ET leader. The ET
leader should possess at least 7 years of experience in EM&A. The ET should monitor the mitigation
measures implemented by the Contractor on a regular basis to ensure the compliance
with the intended aims of the measures. The duties and responsibilities of the
ET are:
Monitor the various environmental parameters
as required in the EM&A Manual;
Carry out site inspections to investigate and
audit the Contractor¡¦s site practice, equipment and work methodologies with
respect to pollution control and environmental mitigation, and anticipate
environmental issues for proactive and practicable action before problems
arise;
Analyse the EM&A data, review the success
of EM&A programme to confirm the adequacy of mitigation measures
implemented and the validity of the EIA predictions, and to identify any
adverse environmental impacts arising and report EM&A results to the IEC, and
the ER;
Liaison with IEC on all environmental
performance matters, and timely submission of all relevant EM&A proforma
for IEC's approval;
Prepare reports on the environmental
monitoring data and the site environmental conditions;
Review the proposals of remedial measure from
the Contractor in the case of exceedances of Action and Limit levels, in
accordance with the Event and Action Plans;
Advice to the Contractor on environmental
improvement, awareness, enhancement matters, etc., on site;
Timely submission of the EM&A report to
the Project Proponent and the EPD; and
Adhere to the procedures for carrying out
environmental complaint investigation in accordance with Section 11 of this Manual.
Independent
Environmental Checker (IEC)
1.17
The IEC should advise
the ER on environmental issues related to the Project. The IEC should possess
at least 7 years of experience in EM&A. The duties and responsibilities of the
IEC are:
Review and audit in an independent, objective
and professional manner in all aspects of the EM&A programme;
Validate and confirm the accuracy of
monitoring results, monitoring equipment, monitoring locations, monitoring
procedures and locations of sensitive receivers;
Audit the EIA recommendations and requirements
against the status of implementation of environmental protection measures on
site;
Review the effectiveness of environmental
mitigation measures and project environmental performance;
On as-needed basis, verify and certify the
environmental acceptability of the Environmental Permit (EP) holder¡¦s
construction methodology, relevant design plans and submissions under the EP;
Carry out random sample check and audit on
monitoring data and sampling procedures, etc;
Conduct random site inspection;
Verify the investigation results of environmental
complaint cases and the effectiveness of corrective measures;
Verify EM&A report that has been
certified by the ET leader; and
Provide feedback
on the audit results to the ET or the EP holder according to Event and Action
Plans in the EM&A Manual.
1.18
Following this introductory section, the
remainder of the Manual is set out as follows:
Section 2 ¡V Sets out EM&A requirement for
air quality;
Section 3 ¡V Sets out EM&A requirement for
noise;
Section 4 ¡V Details auditing requirement for
water quality;
Section 5 ¡V Sets out EM&A requirement for
waste management;
Section 6 ¡V Details auditing requirement for terrestrial
ecology;
Section 7 ¡V Details auditing requirement for landscape
and visual;
Section 8 ¡V Details auditing requirement for cultural
heritage;
Section 9 ¡V Details auditing requirement for
land contamination;
Section 10 ¡V Details auditing requirement for
hazard to life;
Section 11 ¡V Describes scope and frequency of
environmental site audits and sets out the general requirements of the EM&A
programme; and
Section 12¡V Details the EM&A reporting
requirements
2.1
Potential air quality impact arising from the
construction works would mainly be related to dusty construction activities
include excavation works, truck haulage, demolition and wind erosions. In order to check compliance with
legislative requirements, monitoring should be conducted during the
construction phase. Total Suspended Particulates (
2.2
In this section, the requirements,
methodology, equipment, monitoring locations and criteria for the monitoring
and audit of construction dust impact during the construction phase of the Project
are presented.
2.3
The major construction activities of the
Project would likely be demolition and construction of superstructure. Demolishing and constructing reinforced
concrete structure would generate insignificant amount of small size particulates,
hence, no significant RSP or FSP impacts would be anticipated. Monitoring of 24-hour Respirable
Suspended Particulates (RSP) and 24-hour Fine Suspended Particulates (FSP)
levels are not proposed. Therefore,
only 1-hour Total Suspended Particulates (TSP) is recommended to be monitored
and audited at the proposed monitoring locations.
2.4
1-hour TSP levels should be measured to
indicate the impacts of construction dust on air quality. The TSP levels should be measured by following
the standard method as set out in High Volume Sampling Method for Total
Suspended Particulates, Part 50 Chapter 1 Appendix B, Title 40 of the Code of
Federal Regulations of the USEPA (hereinafter referred to as ¡§HVS method¡¨). Upon approval of EPD and IEC, an
alternative sampling method of using direct reading methods which are capable
of producing comparable results as that by the high volume sampling method can
be used to indicate short event impacts.
2.5
All relevant data including temperature,
pressure, weather conditions, elapsed-time meter reading for the start and stop
of sampler, identification and weight of the filter paper, and other special
phenomena and work progress of the concerned site, etc, should be recorded down
in detail. A sample data sheet is
shown in Appendix
B1.
2.6
HVS in compliance with the following
specifications should be used for carrying out the 1-hour monitoring:
(i)
0.6 - 1.7 m3 per minute (20 -
60 standard cubic feet per minute) adjustable flow range;
(ii)
equipped with a timing / control device
with ¡Ó 5 minutes accuracy for 24 hours operation;
(iii) installed with elapsed-time meter with ¡Ó 2 minutes accuracy
for 24 hours operation;
(iv) capable of providing a minimum exposed area of 406 cm2
(63 in2);
(v) flow control accuracy:
¡Ó 2.5% deviation over 24-hour sampling period;
(vi) incorporated with an electronic mass flow rate controller or
other equivalent devices;
(vii) equipped with a shelter to protect the filter and sampler;
(viii) equipped with a flow recorder for continuous monitoring;
(ix) provided with a peaked roof inlet;
(x) incorporated with a manometer;
(xi)
able to hold and seal the filter paper to
the sampler housing at horizontal position;
(xii)
easy to change the filter; and
(xiii)
capable of operating continuously for
24-hour period.
2.7
The ET is responsible for the provision of
the monitoring equipment and should provide sufficient number of samplers with an
appropriate calibration kit for carrying out the baseline monitoring, regular
impacts monitoring and ad-hoc monitoring.
The samplers should be equipped with an electronic mass flow controller
and be calibrated against a traceable standard at regular intervals, in
accordance with requirements stated in the manufacturers operating manual and
as described below. All the
equipment, calibration kit, filter papers, etc, should be clearly labelled.
If direct reading dust meters is proposed to be used, the ET Leader should
submit sufficient information to the IEC to prove that the instrument is
capable of achieving a comparable result as that the HVS and may be used for
the 1-hour sampling. The instrument
should also be calibrated regularly.
2.8
Initial calibration of dust monitoring
equipment should be conducted upon installation and thereafter every six
months. The transfer standard shall be traceable to the internationally
recognized primary standard and be calibrated annually. The calibration data
should be properly documented for future reference by the IEC.
2.9
The flow-rate of the sampler before and after
the sampling exercise with the filter in position should be verified to be
constant and be recorded on the data sheet as shown in Appendix B1.
2.10
If the ET Leader proposes to use a direct
reading dust meter to measure 1-hour TSP levels, he shall submit sufficient information
to the IEC to prove that the instrument is capable of achieving a comparable
result as that the HVS and may be used for the 1-hour sampling. The instrument
shall also be calibrated regularly, and the 1-hour sampling shall be determined
periodically by HVS to check the validity and accuracy of the results measured
by direct reading method.
2.11
Wind data monitoring equipment shall also be
provided and set up at conspicuous locations for logging wind speed and wind
direction near to the dust monitoring locations. The equipment installation
location shall be proposed by the ET Leader and agreed with the ER in
consultation with the IEC. For installation and operation of wind data
monitoring equipment, the following points shall be observed:
a)
the wind sensors shall be installed on
masts at an elevated level 10m above ground so that they are clear of
obstructions or turbulence caused by the buildings;
b)
the wind data shall be captured by a data
logger. The data recorded in the data logger shall be downloaded periodically
for analysis at least once a month;
c)
the wind data monitoring equipment shall
be re-calibrated at least once every six months; and
d)
wind direction shall be divided into 16
sectors of 22.5 degrees each.
2.12
If the ET Leader proposes alternative dust
monitoring equipment / methodology (e.g. direct reading methods) after the
approval of this Manual, agreement from the IEC should be sought. The
instrument should also be calibrated regularly following the requirements
specified by the equipment manufacturers.
2.13
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
shall be HOKLAS accredited or other internationally accredited laboratory.
2.14
If a site laboratory is set up or a
non-HOKLAS accredited laboratory is hired for carrying out the laboratory
analysis, the laboratory equipment shall be approved by the ER in consultation
with the IEC. Measurement performed by the laboratory shall be demonstrated to
the satisfaction of the ER and the IEC. IEC shall conduct regular 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.
2.15
Filter paper of size 8"x10" shall
be labelled before sampling. It shall be a clean filter paper with no pin
holes, and shall be conditioned in a humidity controlled chamber for over 24-hour
and be pre-weighed before use for the sampling.
2.16
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.
2.17
All the collected samples shall be kept
in a good condition for 6 months before disposal.
2.18
The worst potentially affected locations in
the vicinity of the construction activities of the Project identified for dust
monitoring are listed in Table 2.1 and shown in Figure 3.
Identification No. |
Air
Sensitive Receiver (ASR) ID in
EIA Report |
Proposed Dust Monitoring Stations |
AM1 |
ASR-2 |
The L Louey |
AM2 |
ASR-4 |
Hin Keng Estate- |
2.19
The status and locations of air quality
sensitive receivers may change after this Manual is issued. In such case, the
ET should propose alternative monitoring stations and seek agreement from the
IEC and EPD.
2.20
When alternative monitoring locations are
proposed, the monitoring stations should be chosen based on the following
criteria:
(i)
Monitoring at ASRs close to the major
site activities which are likely to have air quality impacts;
(ii)
Monitoring as close as possible to the
ASRs as defined in the EIAO-TM; and
(iii)
Assurance of minimal disturbance to the
occupants and working under a safe condition during monitoring.
2.21
When positioning the HVSs, the following
points should be noted:
(i)
A horizontal platform with appropriate
support to secure the samplers against gusty wind should be provided;
(ii) Two samplers should not be placed less than 2 m apart;
(iii) 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;
(iv) A minimum of 2 m separation from walls, parapets and
penthouses is required for rooftops samplers;
(v) A minimum of 2 m separation from any supporting structure,
measures horizontally is required;
(vi) No furnace or incinerator flue is located nearby the
samplers;
(vii) Airflow around the sampler is unrestricted;
(viii) The sampler is more than 20 m from the dripline;
(ix) Any wire fence and gate to protect the sampler, should not
cause any obstruction during monitoring;
(x) Permission must be obtained to set up the samplers and to
obtain access to the monitoring stations; and
(xi) A secured supply of electricity is needed to operate the
samplers.
2.22
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 the IEC.
2.23
In exceptional cases, when insufficient
baseline monitoring data or questionable results are obtained, the ET Leader
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.
2.24
Baseline monitoring should be carried out to
determine the ambient 1-hour TSP levels at the monitoring locations prior to
the commencement of the Project works. Before commencing the baseline
monitoring, the ET should inform the IEC of the baseline monitoring programme
such that the IEC can conduct on-site audit to ensure accuracy of the baseline
monitoring results.
2.25
TSP baseline monitoring should be carried out
for a continuous period of at least two weeks. 1-hour TSP sampling shall be
done at least three times per day at each monitoring station when the highest
dust impacts are expected. During
the baseline monitoring, there should not be any construction or dust
generating activities in the vicinity of the monitoring stations. General
meteorological conditions (wind speed, direction and precipitation) and notes
regarding any significant adjacent dust producing sources should also be
recorded throughout the baseline monitoring period. A summary of baseline monitoring is
presented in Table 2.2.
2.26
The baseline monitoring will provide data for
the determination of the appropriate Action levels whilst the Limit levels will
be set against statutory or otherwise agreed limits.
2.27
If the ET Leader considers that significant
changes in the ambient conditions have arisen, a repeat of the baseline
monitoring may be carried out to update the baseline levels and air quality
criteria, after consultation and agreement with the ER, the IEC and the
EPD.
2.28
The monthly schedule of the compliance and
impact monitoring programme should be drawn up by the ET one month prior to the
commencement of the scheduled construction period.
2.29
For 1-hour TSP monitoring, the sampling
frequency of at least three times in every six-days should be undertaken when
the highest dust impact occurs. In case of non-compliance with the air
criteria, more frequent monitoring, as specified in the Action Plan in the
following section, should be conducted. This additional monitoring should be
continued until the excessive dust emission or the deterioration in the air
quality is rectified. The impact monitoring programme is summarised in Table 2.2.
Monitoring Period |
Duration |
Sampling Parameter |
Frequency |
Baseline
Monitoring |
Consecutive
days of at least 2 weeks before commencement of major construction works |
1-hour
TSP |
3 times
per day |
Impact
Monitoring |
Throughout
the construction phase |
1-hour
TSP |
3 times in every 6 days when documented and valid
complaint was received |
2.30
Before commencement of the monitoring, the ET
should inform the IEC of the impact monitoring programme such that the IEC can
conduct an on-site audit to ensure the accuracy of the impact monitoring
results.
2.31
Action and Limit (A/L) levels that provide an
appropriate framework for the interpretation of monitoring results. The air quality monitoring data should
be checked against the recommended A/L levels as listed in Table 2.3.
Parameter |
Action Level (1) |
Limit Level |
1-hour
TSP |
¡P
For BL £ 384£gg m-3, AL = (BL * 1.3 + LL)/2 ¡P
ForBL > 384£gg m-3,
AL = LL |
500 £gg m-3 |
(1)
BL = Baseline level, AL = Action level, LL =
Limit level.
2.32
The Event and Action Plan prescribes
procedures and actions associated with the outcome of the comparison of air
quality monitoring data recorded and the agreed A/L levels. In the cases where
exceedances of these A/L levels occurs, the ET, the IEC, the ER and the
Contractor should strictly observe the relevant actions of the respective Event
and Action Plan in Table 2.4.
2.33
Site-specific dust mitigation measures
recommended in the EIA Report include good site
practices and dust suppression measures stipulated in Air Pollution Control
(Construction Dust) Regulation. Details of the mitigation measures are
presented in Appendix C.
ACTION |
|
|||||||
ET |
IEC |
ER |
CONTRACTOR |
|
||||
ACTION
LEVEL |
|
|||||||
1. Exceedance
for one sample |
1.
Inform the Contractor, IEC and ER; 2.
Discuss with the Contractor on the remedial
measures required; 3.
Repeat measurement to confirm findings; and 4.
Increase monitoring frequency. |
1.
Check monitoring data submitted by the ET; 2.
Check Contractor¡¦s working method; and 3.
Review and advise the ET and ER on the
effectiveness of the proposed remedial measures. |
1. Confirm
receipt of notification of exceedance in writing. |
1. Identify
source(s), investigate the causes of exceedance and propose remedial
measures; 2. Implement remedial measures; and 3. Amend
working methods agreed with the ER as appropriate. |
|
|||
2. Exceedance
for two or more consecutive samples |
1.
Inform the Contractor, IEC and ER; 2.
Discuss with the ER and Contractor on the
remedial measures required; 3.
Repeat measurements to confirm findings; 4.
Increase monitoring frequency to daily; 5.
If exceedance continues, arrange meeting
with the IEC, ER and Contractor; and 6.
If exceedance stops, cease additional
monitoring. |
1.
Check monitoring data submitted by the ET; 2.
Check Contractor¡¦s working method; and 3.
Review and advise the ET and ER on the
effectiveness of the proposed remedial measures. |
1.
Confirm receipt of notification of
exceedance in writing; 2.
Review and agree on the remedial measures
proposed by the Contractor; and 3.
Supervise implementation of remedial
measures. |
1. Identify
source and investigate the causes of exceedance; 2. Submit
proposals for remedial measures to the ER with a copy to ET and IEC within
three working days of notification; 3. Implement
the agreed proposals; and 4. Amend
proposal as appropriate. |
|
|||
LIMIT
LEVEL |
|
|
|
LIMIT
LEVEL |
||||
1. Exceedance
for one sample |
1. Inform
the Contractor, IEC, EPD and ER; 2. Repeat
measurement to confirm findings; 3. Increase
monitoring frequency to daily; and 4. Discuss
with the ER, IEC and contractor on the remedial measures and assess the
effectiveness. |
1.
Check monitoring data submitted by the ET; 2.
Check the Contractor¡¦s working method; 3.
Discuss with the ET, ER and Contractor on
possible remedial measures; and 4.
Review and advise the ER and ET on the
effectiveness of Contractor¡¦s remedial measures. |
1.
Confirm receipt of notification of
exceedance in writing; 2.
Review and agree on the remedial measures
proposed by the Contractor; and 3.
Supervise implementation of remedial
measures. |
1.
Identify source(s) and investigate the
causes of exceedance; 2.
Take immediate action to avoid further
exceedance; 3.
Submit proposals for remedial measures to
ER with a copy to ET and IEC within three working days of notification; 4.
Implement the agreed proposals; and 5. Amend
proposal if appropriate. |
|
|||
2. Exceedance
for two or more consecutive samples |
1.
Notify Contractor, IEC, EPD and ER; 2.
Repeat measurement to confirm findings; 3.
Increase monitoring frequency to daily; 4.
Carry out analysis of the Contractor¡¦s
working procedures with the ER to determine possible mitigation to be
implemented; 5.
Arrange meeting with the IEC and ER to
discuss the remedial measures to be taken; 6.
Review the effectiveness of the
Contractor¡¦s remedial measures and keep IEC, EPD and ER informed of the
results; and 7.
If exceedance stops, cease additional
monitoring. |
1.
Check monitoring data submitted by the ET; 2.
Check the Contractor¡¦s working method; 3.
Discuss with ET, ER, and Contractor on the
potential remedial measures; and 4.
Review and advise the ER and ET on the
effectiveness of Contractor¡¦s remedial measures. |
1.
Confirm receipt of notification of
exceedance in writing; 2.
In consultation with the ET and IEC, agree
with the Contractor on the remedial measures to be implemented; 3.
Supervise the implementation of remedial
measures; and 4.
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. Identify
source(s) and investigate the causes of exceedance; 2. Take
immediate action to avoid further exceedance; 3. Submit
proposals for remedial measures to the ER with a copy to the IEC and ET
within three working days of notification; 4. Implement
the agreed proposals; 5. Revise
and resubmit proposals if problem still not under control; and 6. Stop
the relevant portion of works as determined by the ER until the exceedance is
abated. |
|
3.1
In this section, the requirements, methodology,
equipment, monitoring locations, and protocols for the monitoring and audit of noise
impacts during the construction phase of the Project are presented. Operation
noise monitoring is considered not necessary as no adverse impact is expected
with the implementation of the recommended noise mitigation measures.
3.2
The construction
noise level should be measured in terms of the A-weighted equivalent continuous
sound pressure level (Leq).
Leq (30 min) should be used as the monitoring parameter for
the time period between 0700 and 1900 hours on normal weekdays.
3.3
Supplementary
information for data auditing and statistical results such as L10
and L90 should also be obtained for reference. A sample data record sheet is shown in Appendix B2
for reference.
3.4
As referred to the
requirements of 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 should be
used for carrying out the noise monitoring. Immediately prior to and following each
noise measurement the accuracy of the sound level meter should 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 difference between calibration levels obtained
before and after the noise measurement is less than 1.0 dB.
3.5
Noise measurements
should not be made in the presence of fog, rain, wind with a steady speed
exceeding 5ms-1 or wind with gusts exceeding 10ms-1. The
wind speed should be checked with a portable wind speed meter capable of
measuring wind speeds in ms-1.
3.6
The ET is responsible
for the provision of the monitoring equipment and should 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 should be clearly labelled.
3.7
In accordance with
the EIA Report, the designated locations for construction noise monitoring are
listed in Table 3.1 and shown in Figure 4.
Identification
No. |
Noise
Sensitive Receiver (NSR) ID in EIA Report |
Identified
Noise Monitoring Stations |
NM1 |
HK2 |
The L
Louey (South) |
NM2 |
HK5 |
Hin Keng
Estate ¡V Hin Wan House |
NM3 |
HK7 |
C.U.H.K.F.A.A.
Thomas Cheung School |
3.8
The status and
location of noise sensitive receivers (NSRs) may change after approval of this
Manual. In such case, and if
changes to the monitoring locations are considered necessary, the ET should
propose alternative monitoring stations and seek approval from the ER and
agreement from the IEC and EPD on the proposal. If alternative monitoring stations are
proposed, these stations should be chosen based on the following criteria:
Monitoring at NSRs
close to the major site activities of the Project that are likely to arise
noise impacts;
Monitoring as close
as possible to the NSRs as defined in the EIAO-TM; and
Assurance of
minimal disturbance to the occupants and working under a safe condition during
monitoring.
3.9
The monitoring
station should normally be at a point
3.10
The ET should carry
out baseline noise monitoring prior to the commencement of the construction
works. The baseline noise levels should be measured for a continuous
period of at least 14 consecutive days at a minimum logging interval of 30
minutes for daytime (between 0700 and 1900 hours of normal weekdays) and 15
minutes (as three consecutive Leq, (5 minutes) readings) for evening
time (between 1900 and 2300 hours on normal weekdays), general holidays
including Sundays (between 0700 and 2300 hours) and night-time (between 2300
and 0700 on all days). The Leq, L10 and L90
should be recorded at the specified interval. Before
commencing the baseline monitoring, the ET Leader should inform the IEC of the
baseline monitoring programme such that the IEC can conduct on-site audit to
ensure accuracy of the baseline monitoring results.
3.11
There should not be
any construction activities in the vicinity of the monitoring stations during
the baseline monitoring. Any non-project related construction activities
in the vicinity of the monitoring stations during the baseline monitoring
should be noted and the source and location of such activities should be recorded.
3.12
In exceptional cases,
when baseline monitoring data obtained are insufficient or questionable, the ET
Leader should liaise with the IEC and EPD to agree on an appropriate set of
data to be used as the baseline reference.
3.13
Noise monitoring
should be carried out at all the designated monitoring stations when there are
Project-related construction activities being undertaken within a radius of
300m from the monitoring stations. The monitoring frequency should depend
on the scale of the construction activities. An initial guide on the
monitoring is to obtain one set of 30-minute measurement at each station
between 0700 and 1900 hours on normal weekdays at a frequency of once a week
when construction activities are underway.
3.14
If a school is
located near the construction activities, noise monitoring should be carried
out at the monitoring stations for the school during school examination
periods. The ET Leader should liaise with the school administration and the
Hong Kong Examinations and Assessment Authority to ascertain the exact dates
and times of all examinations during the construction phase of the Project.
3.15
In the case of
non-compliance with the construction noise criteria, more frequent monitoring,
as specified in Event and Action Plan in Table 3.3,
should be carried out. This additional monitoring should be continued
until the recorded noise levels show that the non-compliance is rectified or
proved to be irrelevant to the Project-related construction activities.
3.16
The Action and Limit levels for construction
noise are defined in Table 3.2.
Should non-compliance of the noise quality criteria occur, actions in
accordance with the Event and Action Plan in Table 3.3 should be taken.
Time Period |
Action Level |
Limit Level |
0700-1900 hours on
normal weekdays |
When one documented
complaint is received |
75 dB(A) for
residential premises |
70 dB(A) for
schools during normal teaching periods and 65 dB(A) during
examination periods |
3.17
To account for cases in which ambient noise
levels, as identified by baseline monitoring, approach or exceed the stipulated
Limit Levels prior to the commencement of construction, a Maximum Acceptable
Impact Level, which incorporates the baseline noise levels and the identified
construction noise Limit Level, may be defined and agreed with the EPD. The
amended level will be greater than 75 dB(A) and will represent the maximum
acceptable noise level at a specific monitoring station. Correction factors for
the effects of acoustic screening and/or architectural features of NSRs may
also be applied as specified in the Technical Memorandum on Noise from Construction
Work other than Percussive Piling (GW-TM).
EVENT |
ACTION |
|||
ET |
IEC |
ER |
CONTRACTOR |
|
Action Level |
1. Notify
the Contractor, IEC and ER; 2. Discuss
with the ER and Contractor on the remedial measures required; and 3. Increase
monitoring frequency to check mitigation effectiveness. |
1. Review
the investigation results submitted by the Contractor; and 2. Review
and advise the ET and ER on the effectiveness of the remedial measures
proposed by the Contractor. |
1. Confirm
receipt of notification of complaint in writing; 2. Review
and agree on the remedial measures proposed by the Contractor; and 3. Supervise
implementation of remedial measures. |
1. Investigate
the complaint and propose remedial measures; 2. Report
the results of investigation to the IEC, ET and ER; 3. Submit
noise mitigation proposals to the ER with copy to the IEC and ET within three working days of
notification; and 4. Implement
noise mitigation proposals. |
Limit Level |
1. Notify
the Contractor, IEC, EPD and ER; 2. Repeat
measurement to confirm findings; 3. Increase
monitoring frequency; 4. Carry
out analysis of Contractor¡¦s working procedures to determine possible
mitigation to be implemented; 5. Arrange
meeting with the IEC and ER to discuss the remedial measures to be taken; 6. Review
the effectiveness of Contractor¡¦s remedial measures and keep IEC, EPD and ER
informed of the results; and 7. If
exceedance stops, cease additional monitoring. |
1. Check
monitoring data submitted by the ET; 2. Check the Contractor¡¦s working method; 3. Discuss with the ER, ET and Contractor
on the potential remedial measures; and 4.
Review and advise the ET and ER on the
effectiveness of the remedial measures proposed by the Contractor. |
1. Confirm
receipt of notification of failure in writing; 2. In
consultation with the ET and IEC, agree with the Contractor on the remedial
measures to be implemented; 3. Supervise
the implementation of remedial measures; and 4. 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. Identify
source and investigate the causes of exceedance; 2. Take
immediate action to avoid further exceedance; 3. Submit
proposals for remedial measures to the ER with copy to the IEC and ET within
three working days of notification; 4. Implement
the agreed proposals; 5. Revise
and resubmit proposals if problem still not under control; and 6. Stop the
relevant portion of works as determined by the ER until the exceedance is abated. |
3.18
The maximum permissible sound power levels of
the identified fixed noise sources of the Project were predicted in the EIA
Report. To ensure that the noise
impact associated with the fixed plant operations would comply with the noise
standards stipulated in the EIAO-TM and Noise Control Ordinance (NCO), the
specified sound power levels should be implemented and refined by the
Contractor as appropriate. No
specific monitoring for fixed plant operation is deemed necessary.
3.19
The EIA Report indicates that construction
activities would cause noise exceedances at a few NSRs, and therefore,
appropriate noise mitigation measures and good site practices are recommended.
The Contractor should be responsible for the design and implementation of these
measures. The implementation schedule for the recommended mitigation measures
is presented in Appendix C.
3.20
In the event of exceedances or complaints,
the Contractor should review the effectiveness of these mitigation measures and
propose, design and implement alternative or additional measures as
appropriate. The Contractor should
liaise with the ET on alternative or additional remedial measures, if
appropriate, and the proposal of the measures should be submitted to the ER for
approval. The Contractor should
implement the agreed remedial measures properly.
3.21
The mitigation measures as recommended in the
EIA Report for the fixed plant noise arising from the operation of the Project
is presented in Appendix C.
4.1
As identified in the EIA Report, the key
water quality impacts caused by the Project would be associated with the land-based
construction activities. To ensure no adverse water quality impact to the
nearby water courses due to the discharge of surface runoff and drainage from
the works areas, water quality monitoring in the two water courses along the
Project boundary is recommended during the construction phase. It is also
recommended that regular site inspections should be undertaken to inspect the
construction activities and works areas in order to ensure the recommended
mitigation measures are properly implemented.
4.2
Adverse water quality impacts associated with
the operation of the Project are not expected. Thus, no water quality monitoring and
audit programme is required during the Project operation.
4.3
This section describes the requirement of
water quality monitoring during site clearance and foundation works of the
Project.
4.4
Dissolved oxygen (DO), turbidity, suspended
solids (SS) level and pH should be monitored at designated water quality
monitoring stations in the two water courses.
4.5
The levels of DO, turbidity and pH should be
measured in situ whereas SS should be
determined by laboratory analysis.
4.6
The proposed water quality monitoring
stations in the two water courses are listed in Table 4.1 and shown
in Figure 5. In each water course, one monitoring
station should be set in the water course upstream of the works area as a
control station, and one impact monitoring station should be set in the water course
downstream of the works area.
4.7
Sampling should be taken at three water depths, namely, 1m below water
surface, mid-depth and 1m above river bed, except where the water depth is less
than 6m, the mid-depth may be omitted. Should the water depth be less
than 3m, only the mid-depth station will be monitored. The status and locations of water quality
monitoring stations and the works activities may change after issuing this
Manual. If such cases exist, the ET Leader shall propose with justification for
changes to monitoring locations or other requirements of the EM&A
programme, and seek approval from the IE(C) and EPD.
Station |
Description |
Easting |
Northing |
C1 |
Control Stations |
835110 |
824716 |
C2 |
835316 |
824383 |
|
C3 |
835642 |
824386 |
|
M1 |
Impact Monitoring Stations |
835215 |
824827 |
M2 |
835536 |
824775 |
4.8
Baseline conditions in the water courses
should be established and agreed with EPD prior to the commencement of
construction works. The purpose of the baseline monitoring is to
establish ambient conditions prior to the commencement of the works and to
demonstrate the suitability of the proposed monitoring stations. The
baseline conditions should normally be established by measuring the water
quality parameters specified in Section 4.4.
4.9
The baseline monitoring should be taken at
all designated monitoring stations in the two water courses, three days per week,
for at least 4 weeks prior to the commencement of construction works. Temporal
and spatial variations should be taken into account. There should not be any
construction activities in the vicinity of the stations during the baseline
monitoring. The interval between 2 sets of monitoring should not be less than
36 hours. Replicate in-situ measures should be carried out in each sampling
event.
4.10
Baseline monitoring schedule should be
submitted to EPD at least 4 weeks prior to the commencement of baseline monitoring. EPD should also be notified immediately
for any changes in schedule.
4.11
The baseline monitoring report should be
submitted to EPD at least 4 weeks before the commencement of the construction
works for agreement. The baseline
monitoring report should be certified by the IEC before submission to EPD.
4.12
During the construction phase of the Project,
impact monitoring should be undertaken three days per week with sampling /
measurement at the designated monitoring stations in the two water courses.
Upon completion of the construction phase, the monitoring exercise at the
designated monitoring locations should be continued for four weeks in the same
manner as the impact monitoring.
The interval between two sets of monitoring should not be less than 36
hours except where there are exceedances of Action and/or Limit Levels, in
which case the monitoring frequency will be increased.
4.13
Replicate in-situ measurements should be
carried out in each sampling event.
The monitoring probes should be retrieved out of water after the first
measurement and then redeployed for the second measurement. Where the difference in value between the
first and second readings of DO, turbidity or pH is more than 25% of the value
of the first reading, the reading should be discarded and further readings
should be taken.
4.14
The water quality monitoring schedule should
be submitted to EPD at least 1 week before the first day of the monitoring
month. EPD should be notified immediately of any changes in schedule by
fax. If the monitoring data
collected at the designated stations indicate that the Action or Limit Levels
as shown in Table 4.3 are
exceeded, appropriate actions should be taken in accordance with the Event and
Action Plan in Table 4.4.
4.15
Implementation of regular site audits aim to
ensure that the recommended mitigation measures are properly undertaken during
proposed construction works. It can
also provide an effective control of any malpractices and therefore achieve
continual improvement of environmental performance on site.
4.16
Site audits shall be carried out by the ET
and shall be based on the mitigation measures for water pollution control
recommended in the implementation schedule as presented in Appendix C. In the event that the recommended
mitigation measures are not fully or properly implemented, deficiency shall be
recorded and reported to the site management. Suitable actions are to be carried out
to:
investigate
the problems and the causes;
issue
action notes to the Contractor who is responsible for the works;
implement
remedial and corrective actions immediately;
re-inspect
the site conditions upon completion of the remedial and corrective actions; and
record the
event and discuss with the Contractor for preventive actions.
4.17
Other relevant data should also be recorded,
such as: monitoring location / position, time, water depth, weather conditions
and any special phenomena underway near the monitoring station. A sample data record sheet is shown in Appendix B3 for
reference.
Dissolved Oxygen and Temperature Measuring
Equipment
4.18
The instrument should be a portable and weatherproof
DO measuring instrument complete with cable and sensor, and use a DC power
source. The equipment should be capable of measuring:
a DO level
in the range of 0 ‑ 20 mg/L and 0 ‑ 200% saturation; and
a
temperature of 0 ‑ 45 degree Celsius.
Turbidity Measurement Instrument
4.19
The instrument should be a portable and
weatherproof turbidity-measuring instrument using a DC power source. It
should have a photoelectric sensor capable of measuring turbidity between 0 -
1000 NTU (for example, Hach model 2100P or an approved similar instrument).
4.20
The instrument should consist of a
potentiometer, a glass electrode, a reference electrode and a
temperature-compensating device. It should be readable to 0.1pH in a
range of 0 to 14. Standard buffer solutions of at least pH 7 and pH 10
should be used for calibration of the instrument before and after use.
4.21
A water sampler is required. It should
comprise a transparent PVC cylinder, with a capacity of not less than 2 litres,
which can be effectively sealed with latex cups at both ends. The sampler
should have a positive latching system to keep it open and prevent premature
closure until released by a messenger when the sampler is at the selected water
depth (for example, Kahlsico Water Sampler or an approved similar instrument).
4.22
A portable, battery-operated echo sounder would
be used for the determination of water depth at each designated monitoring
station. If echo sounder is not applicable due to low water depth,
various sized stainless steel rules would be used to determine the water depth.
4.23
Water samples for SS should be stored in high
density polythene bottles with no preservative added, packed in ice (cooled to
4¢XC without being frozen) and delivered to the laboratory and analysed as soon
as possible after collection. Sufficient volume of samples should be
collected to achieve the detection limit stated in Table 4.2.
4.24
A hand-held or boat-fixed type digital
Differential Global Positioning System (DGPS) with way point bearing indication
and Radio Technical Commission for maritime (RTCM) Type 16 error message
¡¥screen pop-up¡¦ facilities (for real-time auto-display of error messages and
DGPS corrections from the Hong Kong Hydrographic Office), or other equipment
instruments of similar accuracy, should be provided and used to ensure that the
water sampling locations are correct during the water quality monitoring work.
Calibration of In-Situ Instruments
4.25
The DO meter and turbidimeter should be
checked and calibrated before use. DO meter and turbidimeter should be
certified by a laboratory accredited under HOKLAS or any other international
accreditation scheme, and subsequently re-calibrated at three monthly intervals
throughout all stages of the water quality monitoring. Responses of
sensors and electrodes should be checked with certified standard solutions
before each use. Wet bulb calibration for a DO meter should be carried
out before measurement at each monitoring location.
4.26
Sufficient stocks of spare parts should be
maintained for replacements when necessary. Backup monitoring equipment
should also be made available so that monitoring can proceed uninterrupted even
when some equipment is under maintenance, calibration, etc.
4.27
Analysis of suspended solids (SS) should be
carried out in a HOKLAS or other international accredited laboratory.
Sufficient water samples should be collected at the monitoring stations for
carrying out the laboratory determinations. The determination work should start
within 24 hours after collection of the water samples. The analyses
should follow the American Public Health Association (APHA) Standard Methods
for the Examination of Water and Wastewater or an equivalent method subject to
the approval of EPD. Analytical methods and detection limits for SS are
present in Table 4.2.
Parameters |
Analytical
Method |
Detection
Limit |
Suspended Solids |
APHA 2540D * |
1 mg/L |
* APHA American Public Health Association
Standard Methods for the Examination of Water and Wastewater
4.28
The testing of SS should be HOKLAS accredited
(or if not, approved by EPD) and comprehensive quality assurance and control
procedures in place in order to ensure quality and consistency in results.
4.29
Detailed testing methods, pre-treatment
procedures, instruments use, Quality Assurance / Quality Control (QA/QC)
details (such as blank, spike recovery, number of replicate samples per batch,
etc.), detection limit and accuracy shall be submitted to EPD for approval
prior to the commencement of monitoring programme. EPD may also request the laboratory to
carry out analysis of known standards provided by EPD for quality
assurance. The QA/QC shall be in
accordance with the requirements of HOKLAS or international accredited
scheme. The QA/QC results shall be
reported. The testing methods and
related proposal should be checked and certified by IEC before submission to
EPD for approval.
4.30
Additional replicate samples may be required
by EPD for inter-laboratory calibration. Remaining samples after analysis
should be kept by the laboratory for 3 months in case repeat analysis is
required. If in-house or non-standard methods are proposed, details of
the method verification may also be required to submit to EPD. In any
circumstance, the sample testing should have comprehensive quality assurance
and quality control programmes. The laboratory should prepare to
demonstrate the programme to DEP or his representatives when requested.
4.31
The water quality criteria, namely action and
limit levels, are shown in Table 4.3. These criteria should be applied to
ensure that any deterioration of water quality is readily detected and timely
action is taken to rectify the situation. Should the monitoring results
of the water quality parameters at any designated monitoring station exceed the
water quality criteria, the actions in accordance with the Event and Action
Plan summarized in Table 4.4 shall be
carried out.
4.32
The ET Leader should assess the potential
impacts on the water sensitive receivers based on the monitoring data. The performance of the environmental
management system (i.e. of the overall EM&A programme) should be reviewed by
the ET Leader on a quarterly basis.
The findings of this review should be included in the quarterly EM&A
summary reports, together with any recommendations to improve the performance
of the EM&A programme.
Parameters |
Action
Level |
Limit
Level |
DO in mg/L |
Surface, middle, bottom DO £ 5 %-ile of baseline data |
Surface, middle DO £ 4 mg/L or 1%-ile of baseline data for
surface and middle layer Bottom
DO £ 2 mg/L or 1%-ile of baseline data for
bottom layer |
SS in mg/L |
Depth-average SS ≥
95 %-ile of baseline data or 120% of control station¡¦s SS on the same day of
measurement |
Depth-average SS ≥
99 %-ile of baseline or 130% of control station's SS on the same day of
measurement |
Turbidity in NTU |
Depth-average SS ≥
95 %-ile of baseline data or 120% of control station¡¦s turbidity on the same
day of measurement |
Depth-average SS ≥
99 %-ile of baseline or 130% of control station's turbidity on the same day
of measurement |
pH |
Beyond
the range 6.6 to 8.4 |
Beyond
the range of 6.5 to 8.5 |
Notes: For DO, non-compliance of the water quality
limits occurs when monitoring result is lower than the limits.
For
pH, action should be taken if the measured pH falls outside the specified
range.
4.33
For SS and turbidity, non-compliance of the
water quality limits occurs when monitoring result is higher than the limits.
4.34
Mitigation measures for water quality control
have been recommended in the EIA Report.
The Contractor should be responsible for the design and implementation
of these measures.
4.35
Recommended mitigation measures to minimize
the adverse impacts on water quality during the construction activities are
listed in the implementation schedule given in Appendix C.
4.36
In the event of complaints or non-compliance
/ area of improvement being observed, the ET and the Contractor should review
the effectiveness of these mitigation measures, design alternative or
additional mitigation measures as appropriate and propose to the IEC for
approval and implement these alternative or additional measures.
Event |
ET Leader |
IEC |
ER |
Contractor |
Action level being
exceeded by one sampling day |
¡P
Repeat in situ measurement to confirm
findings; ¡P
Identify reasons for non-compliance and
source(s) of impact; ¡P
Inform IEC and Contractor; ¡P
Check monitoring data, all plant, equipment
and Contractor's working methods; ¡P
Discuss mitigation measures with IEC and
Contractor; ¡P
Repeat measurement on next day of
exceedance. |
¡P
Discuss with ET and Contractor on the
mitigation measures; ¡P
Review proposals on mitigation measures
submitted by Contractor and advise the ER accordingly; ¡P
Assess the effectiveness of the implemented
mitigation measures. |
¡P
Discuss with IEC on the proposed mitigation
measures; ¡P
Make agreement on the mitigation measures
to be implemented. ¡P
Assess the effectiveness of the implemented
mitigation measures. |
¡P
Inform the ER and confirm notification of
the non-compliance in writing; ¡P
Rectify unacceptable practice; ¡P
Check all plant and equipment; ¡P
Consider changes of working methods; ¡P
Discuss with ET and IEC and propose
mitigation measures to IEC and ER; ¡P
Implement the agreed mitigation measures. |
Action level being
exceeded by more than one consecutive sampling day |
¡P
Repeat in
situ measurement to confirm findings; ¡P
Identify reasons for non-compliance and
source(s) of impact; ¡P
Inform IEC and Contractor; ¡P
Check monitoring data, all plant, equipment
and Contractor's working methods; ¡P
Discuss mitigation measures with IEC and
Contractor; ¡P
Ensure mitigation measures are implemented; ¡P
Prepare to increase the monitoring
frequency to daily; ¡P
Repeat measurement on next day of
exceedance. |
¡P
Discuss with ET and Contractor on the
mitigation measures; ¡P
Review proposals on mitigation measures
submitted by Contractor and advise the ER accordingly; ¡P
Assess the effectiveness of the implemented
mitigation measures. |
¡P
Discuss with IEC on the proposed mitigation
measures; ¡P
Make agreement on the mitigation measures
to be implemented; ¡P
Assess the effectiveness of the implemented
mitigation measures. |
¡P
Inform the ER and confirm notification of
the non-compliance in writing; ¡P
Rectify unacceptable practice; ¡P
Check all plant and equipment; Consider
changes of working methods; ¡P
Discuss with ET and IEC and propose
mitigation measures to IEC and ER within three working days; ¡P
Implement the agreed mitigation measures. |
Limit level being
exceeded by one sampling day |
¡P
Repeat in
situ measurement to confirm findings; ¡P
Identify reasons for non-compliance and
source(s) of impact; ¡P
Inform IEC Contractor and EPD; ¡P
Check monitoring data, all plant, equipment
and Contractor's working methods; ¡P
Discuss mitigation measures with IEC, ER
and Contractor; ¡P
Ensure mitigation measures are implemented; ¡P
Increase the monitoring frequency to daily
until no exceedance of Limit level. |
¡P
Discuss with ET and Contractor on the
mitigation measures; ¡P
Review proposals on mitigation measures
submitted by Contractor and advise the ER accordingly; ¡P
Assess the effectiveness of the implemented
mitigation measures. |
¡P
Discuss with IEC, ET and Contractor on the
proposed mitigation measures; ¡P
Request Contractor to critically review the
working methods; ¡P
Make agreement on the mitigation measures
to be implemented; ¡P
Assess the effectiveness of the implemented
mitigation measures. |
¡P
Inform the ER and confirm notification of
the non-compliance in writing; ¡P
Rectify unacceptable practice; ¡P
Check all plant and equipment; ¡P
Consider changes of working methods; ¡P
Discuss with ET, IEC and ER and propose
mitigation measures to IEC and ER within three working days; ¡P
Implement the agreed mitigation measures. |
Limit level being
exceeded by more than one consecutive sampling day |
¡P
Repeat in
situ measurement to confirm findings; ¡P
Identify reasons for non-compliance and
source(s) of impact; ¡P
Inform IEC Contractor and EPD; ¡P
Check monitoring data, all plant, equipment
and Contractor's working methods; ¡P
Discuss mitigation measures with IEC, ER
and Contractor; ¡P
Ensure mitigation measures are implemented; ¡P
Increase the monitoring frequency to daily
until no exceedance of Limit level for two consecutive days. |
¡P
Discuss with ET and Contractor on the
mitigation measures; ¡P
Review proposals on mitigation measures
submitted by Contractor and advise the ER accordingly; ¡P
Assess the effectiveness of the implemented
mitigation measures. |
¡P
Discuss with IEC, ET and Contractor on the
proposed mitigation measures; ¡P
Request Contractor to critically review the
working methods; ¡P
Make agreement on the mitigation measures
to be implemented; ¡P
Assess the effectiveness of the implemented
mitigation measures; ¡P
Consider and instruct, if necessary, the
Contractor to slow down or to stop all or part of the construction activities
until no exceedance of Limit level. |
¡P
Inform the ER and confirm notification of
the non-compliance in writing; ¡P
Rectify unacceptable practice; ¡P
Check all plant and equipment; ¡P
Consider changes of working methods; ¡P
Discuss with ET, IEC and ER and propose
mitigation measures to IEC and ER within three working days; ¡P
Implement the agreed mitigation measures; ¡P
As directed by the ER, to slow down or to
stop all or part of the construction activities. |
.
5.1
Construction and Demolition (C&D)
materials, general refuse from workforce and chemical waste would be generated
during the construction and operation phase. It is the Contractor¡¦s
responsibility to ensure all the waste arising from the Project is handled,
stored and disposed of in accordance with good waste management practices,
relevant legislation and waste management guidelines. Provided that the waste is
handled, transported and disposed of using approved methods and that the
recommended good site practices are strictly followed, adverse environmental
impacts would not be expected.
5.2
The mitigation measures recommended in EIA Report
should form the basis of the site Waste Management Plan (WMP) to be developed
by the Contractor during the construction stage.
5.3
It is recommended that the waste generated
during the construction activities should be audited regularly by the ET to
determine if waste is being managed in accordance with approved procedures and
the site WMP. The audit should look at all aspects of on-site waste management
practices including waste generation, storage, recycling, transport and
disposal. Apart from site inspection, documents including licences, permits,
disposal and recycling records should be reviewed and audited for compliance
with the legislation and contract requirements. In addition, the routine site
inspections should check the implementation of the recommended good site
practices and other waste management mitigation measures. In
order to monitor the disposal of C&D material at landfills and public
filling areas, as appropriate, and to control fly tipping, a trip-ticket system
should be included as one of the contractual requirements to be implemented by
an Environmental Team undertaking the Environmental Monitoring and Audit work.
5.4
With the appropriate handling, storage and
disposal of waste arising from the construction works as recommended in Appendix C, the
potential of adverse environmental impacts would be minimized. During the site
inspections, the ET should pay special attention to the issues relating to
waste management and check whether the Contractor has implemented the
recommended good site practices and mitigation measures.
5.5
Regular audits and site inspections should be
carried out during construction phase by the ER, ET and Contractor to ensure
that the recommended good site practices and the recommended mitigation
measures in Appendix C are
properly implemented by the Contractor. The audits should concern all aspects
of on-site waste management practices including waste generation, storage,
recycling, transport and disposal. Apart from site inspection, documents
including licences, permits, disposal and recycling records should be reviewed
and audited for compliance with the legislation and contract requirements.
5.6
The requirements of the environmental audit
programme are set out in Section 11 of this
Manual. The audit programme will verify the implementation status and evaluate
the effectiveness of the mitigation measures.
6.1
The EIA report has identified that part of
proposed works area would be located within the secondary woodland habitat of
high ecological value. Five flora
species of conservation importance were recorded within the works area. Major ecological impacts anticipated
include direct impact on the secondary woodland habitat and the floral species
of conservation importance.
Indirect impact such as noise disturbance, construction site runoff
etc., would also affect the nearby natural habitat and watercourses.
6.2
Mitigation measures have been recommended to
minimize potential direct and indirect impacts to ecological resources. With the recommended mitigation measures
implemented, no unacceptable impact on wildlife is expected from the
construction and operation of the Project.
This section describes the requirements for the monitoring and auditing
of ecological impacts arising from the Project.
6.3
Mitigation measures for ecological impacts
have been recommended in the EIA Report to minimize potential direct and
indirect impacts. The Contractor
should be responsible for the design and implementation of these measures.
6.4
Recommended mitigation measures to minimize
the adverse impacts on terrestrial ecology during the construction and
operation phases are listed in the implementation schedule given in Appendix C.
Site Audit
Requirement
6.5
To minimize the disturbance impact on the
natural habitat and wildlife, the implementation of the mitigation measures
recommended in Ecological Mitigation Measures section above should be subject
to regular site audit. Site audit
should be carried out monthly throughout the construction phase. In case of non-compliance, the
Contractor should be informed to strengthen the proposed measures
accordingly.
Detailed Vegetation
Survey
6.6
To minimize the impact to flora species of
conservation importance, four flora species (Incense Tree, Ailanthus, Lamb of
Tartary, and Hong Kong Eagle¡¦s Claw)
are recommended to be transplanted to the woodland compensation area, where
possible. The abundance and health
condition of flora species recorded during the EIA stage may vary in the
detailed design stage. Prior to the
commencement of the works being undertaken, a detailed vegetation survey should
be conducted, by suitably qualified botanist/ecologist with over 7 years
experience, for the works area requiring vegetation clearance.
6.7
The detailed
vegetation survey should cover the following scope:
Confirming and updating
the number, location and health condition of the flora species of conservation importance;
Preparing a plan
illustrating the location of the affected individuals in accordance to the
findings of the vegetation survey;
Identifying the suitable
receptor sites within the compensatory woodland area or temporary nursery site;
Recommending an
implementation programme and methodology of transplanting; and
Recommending a post-transplantation monitoring and maintenance
programme.
6.8
The results of the detailed vegetation survey
and post-transplanting monitoring programme should be included in the
transplantation proposal with plans for approval prior to transplantation.
Post-transplantation
Monitoring for Flora Species of Conservation Importance
6.9
To review the
performance of the transplantation exercise, monitoring of transplanted flora
should be conducted after the transplantation. The monitoring should be conducted at
least twice per month during the first year and once per month during the
course of planting works of the woodland compensation area. The parameters to be monitoring should
include the health condition and survival rate of the transplanted flora. Any observations and recommendations
should be reported in monthly EM&A reports.
Measures to Bat
Roosting Site
6.10
Where Chinese Fan-palm (Livistona
chinensis) removal is required, these should be checked by suitably
qualified ecologist with over 7 years experience for roosting bats prior to
their removal. If roosting bats are
observed, a strategy for passive removal will be agreed with the AFCD and
implemented. This could include
undertaking the works just after the bats have left the roost (i.e. dusk).
6.11
The inclusion of Chinese Fan-palm of similar size as the affected
plant within the areas of compensatory planting or other suitable areas is
recommended to replace affected specimens, and compensate for the impact to
roosting opportunities for this bat species.
Measures to Disturbance
from Construction Activities
6.12
By adopting the following mitigation measures
to minimize the disturbance impacts to terrestrial habitat and associated
wildlife arising from the land-based construction activities.
¡P
Use of Quiet
Mechanical Plant during the construction phase should be adopted wherever
possible.
¡P
Hoarding or fencing
should be erected around the works area boundaries during the construction
phase. The hoarding should screen
adjacent habitats from construction phase activities, reduce noise disturbance
to these habitats and also to restrict access to habitats adjacent to works
areas by site workers.
¡P
Regular spraying of
haul roads to minimize impacts of dust deposition on adjacent vegetation and
habitats during the construction activities.
Measures to
Watercourse
6.13
To minimize the contamination of wastewater discharge, accidental
chemical spillage and construction site run-off to the receiving water bodies,
mitigation measures such as diverting the site runoff to silt trap facilities
before discharging into storm drain, proper waste and dumping management and
standard good site practice for land-based construction:
¡P
The works areas
would be reinstated immediately after completion of works;
¡P Waste
skips should be provided to collect general refuse and construction
wastes. The wastes should be
disposed of in a timely and appropriate manner;
¡P Drainage
arrangements should include sediment traps to collect and control construction
run-off;
¡P Open
burning on works sites is illegal, and should be strictly prohibited; and
¡P Only
well-maintained plant should be operated on site and plant should be serviced
regularly during the construction programme.
Monitoring on
Woodland Compensation
6.14
Compensatory habitat would be created
within the works area, at the plantation south of the nearby Sha Tin South
Freshwater Service Reservoir, and at the wasteland north of the Sha Tin West Freshwater
Service Reservoir, to compensate for the affected woodland habitat. The condition of this compensatory
habitat should be monitored.
6.15
The specifications for the standard practices
of inspection and establishment works shall follow the General Specification for Civil Engineering Works (2006) Section 3 ¡V
Landscape Softworks and Establishment Works. Inspection of planting works should be
conducted bi-weekly by the landscape contractors to determine the necessity of
any maintenance and establishment works.
6.16
In addition, an ecological monitoring
programme covering at least 6 years is recommended to review the establishment
of the vegetation. The monitoring
frequency should be at least bimonthly during the first year of the planting
stage, and can be reduced to quarterly from the second year. Parameters, such as health condition and
survival rate of the plant, presence of weedy plant, should be monitored. The implementation details of the
monitoring programme should be described in Woodland Compensation Plan (WCP)
prepared by a suitably qualified botanist/ecologist with over 7 years
experience. The WCP should be
circulated to and approved by relevant departments prior to the construction. The need and requirements of monitoring
should be reviewed after the completion of the monitoring programme.
7.1
The EIA has recommended landscape and visual
mitigation measures to be undertaken during both the construction and
operational phases of the Project.
The design, implementation and maintenance of landscape mitigation
measures should be checked to ensure that any potential conflicts between the
proposed landscape measures and any other works of the project would be
resolved as early as practical without affecting the implementation of the
mitigation measures.
7.2
The proposed mitigation measures of landscape
and visual impacts are summarised in the Implementation Schedule of Mitigation
Measures in Appendix
C. The landscape and visual mitigation measures proposed should be
incorporated in the detailed landscape and engineering design. The construction
phase mitigation measures should be adopted from the commencement of
construction and should be in place throughout the entire construction period.
Mitigation measures for the operational phase should be adopted during the
detailed design and be built as part of the construction works so that they are
in place on commissioning of the Project.
7.3
The landscape and visual mitigation measures
are elaborated in Tables 7.1 and 7.2.
ID No. |
Landscape and Visual Mitigation Measures |
Funding Agency |
Implementation Agency |
CM1 |
Trees unavoidably
affected by the works shall be transplanted as far as possible in
accordance with DEVB TCW No. 10/2013 ¡V Tree Preservation. |
WSD |
WSD |
CM2 |
Compensatory
Planting shall be provided in accordance with DEVB TCW No. 10/2013 ¡V Tree
Preservation. |
WSD |
WSD |
CM3 |
Control
of night-time lighting glare |
WSD |
WSD |
CM4 |
Erection
of decorative screen hoarding compatible with the surrounding setting. |
WSD |
WSD |
CM5 |
Management
of facilities on work sites which give control on the height and
disposition/arrangement of all facilities on the works site to minimize
visual impact to adjacent VSRs. |
WSD |
WSD |
ID No. |
Landscape and Visual Mitigation Measures |
Funding Agency |
Implementation
Agency |
Maintenance/
Management Agency |
OM1 |
Aesthetically
pleasing design as regard to the form, material and finishes shall be
incorporated to proposed permanent above ground structures of the project so
as to blend in the structures to the adjacent landscape and visual
context. |
WSD |
WSD |
WSD |
OM2 |
Buffer Tree and
Shrub Planting to screen the proposed structures. |
WSD |
WSD |
WSD |
OM3 |
Landscape
Enhancement of affected area with amenity planting where practical. |
WSD |
WSD |
WSD |
OM4 |
Vertical Greening
shall be incorporated to soften the proposed structures where practical. |
WSD |
WSD |
WSD |
OM5 |
Green Roof shall
be proposed to enhance the landscape quality of the structures and mitigate
any potential visual impact on adjacent VSRs. |
WSD |
WSD |
WSD |
OM6 |
Landscape
Treatments on slope to enhance the landscape and visual amenity value of the
proposed man made slopes. |
WSD |
WSD |
WSD |
OM7 |
Woodland mix
planting (within the site and off-site) |
WSD |
WSD |
WSD |
7.4
The following good site practice measure will
also be incorporated in the construction phase of the project:
¡P
Topsoil, where identified, shall be stripped
and stored for re-use in the construction of the soft landscape works.
7.5
Site audits should be undertaken during the
construction phase of the Project to check that the proposed landscape and
visual mitigation measures are properly implemented and maintained as per their
intended objectives. Site audits
should be undertaken by the ET at least once every two weeks during the
construction period. The audits
shall concern tree preservation, transplanting, compensation, night-time glare
control, management of work sites facilities and the implementation of
permanent landscape works in accordance with the proposed mitigation measures
in the Landscape Master Plan.
7.6
In the event of non-compliance, the
responsibilities of the relevant parties are detailed in the Event/Action plan
provided in Table
7.3.
Action
Level |
ET |
IEC |
ER |
Contractor |
Non-conformity
on one occasion |
1.
Inform the Contractor, the IEC and the ER 2.
Discuss remedial actions with the IEC, the ER and the Contractor 3.
Monitor remedial actions until rectification has been completed |
1. Check
inspection report 2. Check
the Contractor's working method 3.
Discuss with the ET, ER and the Contractor on possible remedial measures 4.
Advise the ER on effectiveness of proposed remedial measures. |
1.
Confirm receipt of notification of non-conformity in writing 2.
Review and agree on the remedial measures proposed by the Contractor 3. Supervise
implementation of remedial measures |
1.
Identify Source and investigate the non-conformity 2.
Implement remedial measures 3. Amend
working methods agreed with the ER as appropriate 4.
Rectify damage and undertake any necessary replacement |
Repeated
Non-conformity |
1.
Identify source 2.
Inform the Contractor, the IEC and the ER 3.
Increase inspection frequency 4.
Discuss remedial actions with the IEC, the ER and the Contractor 5.
Monitor remedial actions until rectification has been completed 6. If
non-conformity stops, cease additional monitoring |
1. Check
inspection report 2. Check
the Contractor's working method 3.
Discuss with the ET and the Contractor on possible remedial measures 4.
Advise the ER on effectiveness of proposed remedial measures |
1. Notify
the Contractor 2. In
consultation with the ET and IEC, agree with the Contractor on the remedial
measures to be implemented 3.
Supervise implementation of remedial measures. |
1.
Identify Source and investigate the non-conformity 2.
Implement remedial measures 3. Amend working methods agreed with the
ER as appropriate 4.
Rectify damage and undertake any necessary replacement. Stop relevant portion of works
as determined by the ER until the non-conformity is abated. |
Note:
ET ¡V Environmental
Team
IEC ¡V Independent
Environmental Checker
ER ¡V Engineer¡¦s
Representative
8.1
Cultural
heritage resources within the Study Area have been identified and reviewed
through site visits and literature review.
Based on the baseline review, there lacks archaeological potential
within the Study Area.
8.2
Considering
sufficient buffer distances between built heritage resources and the proposed
works areas, together with appropriate mitigation measures, there would be
insignificant visual and vibration impact during construction and operation
phases.
8.3
Mitigation
measures for cultural heritage impacts have been recommended in the EIA report.
Recommended mitigation measures to minimize the adverse impacts on cultural
heritage during the construction and operation phases are listed in the
implementation schedule given in Appendix C.
Construction Phase
8.4
No specific EM&A requirements would be required during construction
phase.
8.5
Given the considerable separation distance (approximately 270m) between
the three graded historic buildings at Hin Tin village and the Works Area,
there would be neither adverse vibration nor visual impacts on the Hin Tin
village built heritages, and thus no specific EM&A requirements would be
required.
8.6
Given that distance between the Ex KCR Beacon Hill Tunnel and the
proposed new administration building in about 120m vibration impact is
anticipated to be insignificant.
However, as a precautionary measure, a peak
particle velocity limit of 7.5mm/s is recommended, including measuring at the facade wall
of tunnel portal and inside the tunnel where it is closest to any construction
works during the piling and drilling works. Measurements
should be made by properly calibrated device and under the supervision of the
Registered Structural Engineers (RSE) or his representatives.
8.7
The
project proponent should ensure that vibration levels are controlled to
appropriate levels. The vibration
monitoring should be carried out by the contractor at the facade wall of tunnel portal, as well as inside the tunnel where it is closest to any
construction works
during the piling and drilling works.
Operation Phase
8.8
No specific EM&A requirements would be required during operation phase.
9.1
The land
contamination assessment has examined the potential contaminating land uses
within the Project area and investigated the potential impacts of the
contamination on future use. Due to current land use and site constraints, site
investigation (SI) works could not be conducted during the course of the EIA
study. SI works would therefore be conducted before construction commences in
order to identify any contaminants that may pose hazardous risks or cause
adverse effects to the future uses.
9.2
Mitigation measures
for land contamination have been recommended in the EIA report. The Contractor
should be responsible for the design and implementation of these measures. The
implementation schedule of the recommended land contamination mitigation
measures is presented in Appendix C.
9.3
SI works should be conducted upon
decommissioning and prior to the commencement of construction works at the
potentially contaminated hotspots according to the Contamination Assessment
Plan (CAP). Further site inspection should be carried out before conducting SI
to confirm the latest site conditions and verify the applicability of the CAP.
If there are any changes in site conditions, a revised CAP detailing the
revised sampling and testing plan should be submitted to EPD for endorsement.
9.4
After SI, Contamination Assessment Report
(CAR) and if contamination is found, Remediation Action Plan (RAP) should be
prepared and submitted to EPD for endorsement. A Remediation Report (RR) should
be prepared and submitted to EPD to demonstrate that the decontamination work
is adequate and is carried out in accordance with the endorsed CAR and
RAP. No construction works should
be carried out prior to the completion of remediation.
10.1
A Hazard Assessment of the risks associated
with the storage, handling and transport of chlorine at Sha Tin WTW and the
off-site transport of chlorine within the Consultation Zone for the
Construction and Operational Phases of the reprovisioning project has been
conducted in this EIA.
10.2
This In-situ Reprovisioning of Sha Tin WTW is
an improvement project, following its completion the chlorine-related risks
levels to the general public will be lowered due to the anticipated reduction
of the chlorine storage and usage levels.
10.3
Impact of chlorine could be reduced with the
recommended practicable mitigation/safety measures for hazard to life in the
EIA Report which are presented below.
10.4
A number of good practice measures mitigating
hazard to life of the Project construction workers have been listed in Table
12.22 of the EIA Report. The measures recommended for implementation include
provision of chlorine gas detectors in the works areas, establishing emergency
response and evacuation plans and a number of specific recommendations related
mainly to the safe organization of reprovisioning works.
10.5
Similarly, a number of short term and long
term measures mitigating the hazards related to off-site transport of chlorine
have been recommended which are listed in Table 12.38 of the EIA Report.
10.6
No hazard to life mitigation measures related
to the potential on-site chlorine releases have been recommended for the
Operational Phase of the Project.
10.7
Implementation Schedule of all these measures
is provided in Appendix C.
10.8
Implementation of the recommended mitigation
measures would be regularly audited. No specific Environmental Monitoring would
be required.
11.1
Site inspection is one of the most effective
tools to enforce the environmental protection requirements at the works area by
providing a direct mean to trigger and enforce specified environmental
protection and pollution control measures.
Site inspection should be undertaken regularly during the construction
phase to ensure that appropriate environmental protection and pollution control
mitigation measures are properly implemented for the activities associated with
the Project.
11.2
The ET Leader should be responsible for
formulating the environmental site inspection programme as well as the
deficiency and remedial action reporting system, and for carrying out the site
inspections. The proposal for
rectification, if any, should be prepared and submitted to the ET Leader and
IEC by the Contractor.
11.3
Regular site inspections should be carried
out and led by the ER and attended by the Contractor and ET at least once per
week during the construction phase. The areas of inspection should not be
limited to the environmental conditions and the pollution control and
mitigation measures within the works area, it should also review the
environmental conditions of locations that are beyond the boundary of the works
area but are likely to be affected directly or indirectly by the construction
site activities of the Project. During the inspection, the following
information should be referred to:
¡± The EIA
Report and EM&A recommendations on environmental protection and pollution
control mitigation measures;
¡± Ongoing
results of the EM&A programme;
¡± Works
progress and programme;
¡± Individual
works methodology proposals (which should include the proposal on associated
pollution control measures);
¡± Contract
specifications on environmental protection and pollution prevention control;
¡± Relevant
environmental protection and pollution control legislations; and
¡± Previous
site inspection results undertaken by the ET and others.
11.4
The Contractor should keep the ER and ET
Leader updated with all relevant environmental related information on the
construction contract necessary for him/her to carry out the site inspections.
Site inspection results and associated recommendations for improvements to the
environmental protection and pollution control efforts should be recorded and
followed up by the Contractor in an agreed time-frame. The Contractor should follow the
procedures and time-frame stipulated in the environmental site inspection, and
the deficiency and remedial action reporting system to be formulated by the ET
Leader, to report on any remedial measures subsequent to the site inspections.
11.5
The ER, ET and the Contractor should also
carry out ad hoc site inspections if significant environmental problems are
identified. Inspections may also be
required subsequent to receipt of an environmental complaint, or as part of the
investigation work, as specified in the Event and Action Plan for the EM&A
programme.
11.6
There are statutory and contractual
requirements on environmental protection and pollution control with which
construction activities must comply.
11.7
To ensure that the works are in compliance
with the contractual requirements, all method statements of works should be
submitted by the Contractor to the ER for approval and to the ET Leader for
vetting to determine if sufficient environmental protection and pollution control
measures have been included. The implementation schedule of mitigation measures
is summarized in Appendix C.
11.8
The ER and ET Leader should also review the
progress and programme of the works to check that relevant environmental
legislations have not been violated, and that any foreseeable potential for
violating laws can be prevented.
11.9
The Contractor should provide the update of
the relevant documents to the ET Leader so that works checking could be carried
out effectively. The document should at least include the updated Works
Progress Reports, updated Works Programme, any application letters for licences
/ permits under the environmental protection legislations, and copies of all
valid licences / permits. The site diary should also be available for the inspection
by the relevant parties.
11.10 After
reviewing the documentation, the ET Leader should advise the Contractor of any
non-compliance with contractual and legislative requirements on environmental
protection and pollution control so that they can timely take follow-up actions
as appropriate. If the follow-up
actions may still result in violation of environmental protection and pollution
control requirements, the ER and ET should provide further advice to the Contractor
to take remedial action to resolve the problem.
11.11 Upon
receipt of the advice, the Contractor should undertake immediate action to
remedy the situation. The ER and ET should follow up to ensure that appropriate
action has been taken in order to satisfy contractual and legal requirements.
11.12
The following procedures should be undertaken
upon receipt of any environmental complaint:
i.
The Contractor to log complaint and date of
receipt onto the complaint database and inform the ER, ET and IEC immediately;
ii.
The Contractor to investigate, with the ER
and ET, the complaint to determine its validity, and assess whether the source
of the problem is due to construction works of the Project with the
support of additional monitoring frequency and stations, if necessary;
iii.
The Contractor to identify remedial measures
in consultation with the IEC, ET and ER if a complaint is valid and due to the
construction works of the Project;
iv.
The Contractor to implement the remedial measures as required by the ER and to agree
with the ET and IEC any additional monitoring frequency and stations, where
necessary, for checking the effectiveness of the remedial measures;
v.
The ER, ET and IEC to review the effectiveness of the
Contractor's remedial measures and the updated situation;
vi.
The ET/Contractor to undertake additional monitoring and audit
to verify the situation if necessary, and oversee that circumstances leading to the complaint
do not recur;
vii.
If the complaint is referred by the EPD, the
Contractor to prepare interim report on the status of the complaint investigation
and follow-up action stipulated
above, including the details of the remedial measures and additional monitoring
identified or already taken, for submission to EPD within the time frame
assigned by the EPD; and
viii.
The ET to record the details of the complaint, results of the investigation, subsequent
actions taken to address the complaint and updated situation including the
effectiveness of the remedial measures, supported by regular and additional
monitoring results in the monthly
EM&A reports.
12.1
Types of reports that the ET should prepare and submit include Baseline
Monitoring Report, Monthly EM&A Reports and Final EM&A Review
Report. In accordance with Annex 21
of the EIAO-TM, a copy of the monthly and final review EM&A reports should
be made available to the Director of Environmental Protection.
12.2
Reports can be provided in an electronic medium upon agreeing the
format with the ER and EPD. All the
monitoring data (baseline and impact) should be submitted in electronic medium. Sample data sheets for air quality,
noise and water monitoring are shown in Appendices B1 to B3.
12.3
The ET should prepare and submit a Baseline Environmental Monitoring
Report (excluding water quality) at least one month before
commencement of construction of the Project. Baseline Monitoring Report for water
quality should be prepared and submitted at least one month before the
commencement of construction works for the Project. Copies of the Baseline
Environmental Monitoring Report should be submitted to the IEC, ER and
EPD. The ET should liaise with the
relevant parties on the exact number of copies require.
12.4
The Baseline Monitoring Report should include at least the following
information:
(i) up to
half a page of executive summary;
(ii) brief description
of project background information;
(iii) drawings showing
locations of the baseline monitoring stations;
(iv) 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
(v) details of
influencing factors, including:
major activities, if any, being carried out
on the Project site during the period
weather conditions during the period
other factors which might affect the monitoring results
(vi) determination of
the Action and Limit Levels (AL levels) for each monitoring parameter and
statistical analysis of the baseline data;
(vii) revisions for inclusion
in the EM&A Manual; and
(viii) comments and
conclusions.
12.5
The results and findings of all EM&A works required in this Manual
should be recorded in the monthly EM&A reports prepared by the ET and
endorsed by the IEC. The first
Monthly EM&A Report should be prepared and submitted to EPD within a month after
the major construction works commences with the subsequently Monthly EM&A
Reports due in 10 works days of the end of each reporting month. Copies of each monthly EM&A report
should be submitted to each of the three parties: ER, IEC and EPD. Before submission of the first monthly
EM&A Report, the ET should liaise with the parties on the exact number of
copies and format of the monthly reports in both hard copy and electronic
copies.
12.6
The ET Leader should review the number and location of monitoring
stations and parameters every six months, or on as needed basis, in order to
cater for any changes in the surrounding environment and the nature of works in
progress.
12.7
The first Monthly EM&A Report should include at least but not
limited to the following:
(i) executive
summary (1-2 pages):
breaches of Action and Limit levels;
complaint log;
notifications of any summons and successful
prosecutions;
reporting changes; and
future key issues.
(ii) basic
project information:
project organization including key personnel
contact names and telephone numbers;
construction programme;
management structure; and
works undertaken during the reporting month.
(iii) environmental
status:
advice on the status of statutory
environmental compliance, such as the status of compliance with the EP
conditions under the EIAO, submission status under the EP and implementation
status of mitigation measures;
works undertaken during the reporting month
with illustrations (e.g. location of works, etc); and
drawings showing the Project area, any
environmental sensitive receivers and the locations of the monitoring stations.
(iv) summary of
EM&A requirements:
all monitoring parameters;
environmental quality performance limits
(Action and Limit levels);
Event and Action Plans;
environmental mitigation measures, as recommended
in the EIA Report; and
environmental requirements in contract
documents.
(v) implementation
status:
advice on the implementation status of
environmental protection and pollution control/mitigation measures as
recommended in the EIA Report.
(vi) 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;
monitoring parameters;
monitoring locations;
monitoring date, time, frequency and
duration;
graphical plots of the monitoring parameters
in the reporting month annotated against the following;
(a) major
activities being carried out on site during the reporting period;
(b) weather
conditions during the reporting period;
(c) any
other factors which might affect the monitoring results; and
(d) QA/QC
results and detection limits.
(vii) report on
non-compliance, complaints, notifications of summons and status of
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), including locations and nature of complaints investigation, liaison
and consultation undertaken, actions and follow-up procedures taken, results
and summary;
record of all notification of summons and
successful prosecutions for breaches of current environmental protection /
pollution control legislation, including locations and nature of the breaches,
investigation, follow-up actions taken, results and summary;
review of the reasons for and the
implications of non-compliances, complaints, summons and prosecutions including
review of pollution sources and working procedures; and
description of the actions taken in the event
of non-compliance and deficiency reporting and any follow-up procedures related
to earlier non-compliance.
(viii) others:
an account of the future key issues as
reviewed from the works programme and method statements of works;
advice on the solid and liquid waste management
status;
A forecast of the works programme, impact
predictions and monitoring schedule for the next three months;
compare the EM&A data in the reporting month
with the EIA predictions and annotate with explanation for any discrepancies;
and
comments (e.g. the effectiveness and
efficiency of the mitigation measures), recommendations (for example, any
improvement in the EM&A programme) and conclusions.
12.8
Subsequent monthly EM&A Reports during the construction phase
should include the following information:
(i) executive
summary (1-2 pages):
breaches of Action and Limit levels;
complaint log;
notifications of any summons and successful
prosecutions;
reporting changes; and
future key issues.
(ii) basic
project Information:
project organization including key personnel
contact names and telephone numbers;
construction programme;
management structure; and
works undertaken during the reporting month.
(iii) environmental
status:
advice on the status of statutory
environmental compliance, the status of compliance with the EP conditions under
the EIAO, submission status under the EP and implementation status of
mitigation measures;
works undertaken during the reporting month
with illustrations (such as location of works, etc); and
drawings showing the Project area, any
environmental sensitive receivers and the locations of the monitoring stations.
(vi) implementation
status:
advice on the implementation status of
environmental protection and pollution control/mitigation measures as recommended
in the EIA Report.
(v) 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;
monitoring parameters;
monitoring locations (and depth);
monitoring date, time, frequency and
duration;
graphical plots of the monitoring parameters
in the reporting month annotated against the following;
(a) major
activities being carried out on site during the reporting period;
(b) weather
conditions during the reporting period;
(c) any
other factors which might affect the monitoring results; and
(d) QA/QC
results and detection limits.
(vi) report on
non-compliance, complaints, notifications of summons and status of
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), including the locations and nature of complaints investigation,
liaison and consultation undertaken, actions and follow-up procedures taken,
results and summary;
record of all notification of summons and
successful prosecutions for breaches of current environmental protection /
pollution control legislation, including locations and nature of the breaches,
investigation, follow-up actions taken, results and summary;
review of the reasons for and the
implications of non-compliance, complaints, summons and prosecutions including
review of pollution sources and working procedures; and
descriptions of the actions taken in the
event of non-compliances and deficiency reporting and any follow-up procedures
related to earlier non-compliance.
(vii) others:
an account of the future key issues as
reviewed from the works programme and method statements of works;
advice on the solid and liquid waste
management status;
A forecast of the works programme, impact
predictions and monitoring schedule for the next three months;
compare the EM&A data in the reporting month
with the EIA predictions and annotate with explanation for any discrepancies;
and
comments (e.g.. the effectiveness and
efficiency of the mitigation measures), recommendations (for example, any
improvement in the EM&A programme) and conclusions.
(viii) appendix:
Action and Limit levels;
graphical plots of trends of the monitoring parameters
over the past four reporting periods for the representative monitoring stations
annotated against the following:
(a) major
Project activities being carried out on site during the reporting period;
(b) weather
conditions during the reporting period; and
(c) any
other factors that might affect the monitoring results.
monitoring schedule for the present and next
reporting period;
cumulative statistics on complaints,
notifications of summons and successful prosecutions;
outstanding issues and deficiencies.
12.9
The EM&A programme should be terminated upon completion of those
construction activities that have the potential to result in a significant
environmental impact.
12.10
Prior to the proposed termination, the proposed termination should be
implemented after the proposal has been endorsed by the IEC, the Engineer and
the Project Proponent followed by final approval from the Director of
Environmental Protection.
12.11
The ET Leader should prepare and submit the Final EM&A Report which
should contain at least the following information:
(i) executive
summary (1 - 2 pages);
(ii) drawings
showing the Project area, environmental sensitive receivers and locations of
the monitoring stations;
(iii) basic project
information including a synopsis of the project organisation, contacts of key
management, and a synopsis of works undertaken during the course of the
Project;
(iv) a brief summary
of EM&A requirements including:
environmental mitigation measures, as
recommended in the EIA Report;
environmental impact hypotheses tested;
environmental quality performance limits
(Action and Limit levels);
all monitoring parameters; and
Event and Action Plans;
(v) a summary
of the implementation status of environmental protection and pollution control
/ mitigation measures, as recommended in the EIA Report, summarised in the
updated implementation schedule;
(vi) graphical plots
and the statistical analysis of the trends of monitoring parameters over the
course of the Project, including the post-project monitoring for all monitoring
stations annotated against:
the major activities being carried out on
site during the reporting period;
weather conditions during the reporting
period; and
any other factors which might affect the
monitoring results;
(vii) a summary of
non-compliance (exceedances) of the environmental quality performance limits
(Action and Limit levels);
(viii) a review of the reasons
for and the implications of non-compliance including review of pollution
sources and working procedures as appropriate;
(ix) a description of
the actions taken in the event of non-compliance;
(x) a summary
record of all complaints received (written or verbal) for each media, liaison
and consultation undertaken, actions and follow-up procedures taken;
(xi) a summary record
of notifications of summons and successful prosecutions for breaches of the
current environmental protection / pollution control legislation, locations and
nature of the breaches, investigation follow-up actions taken and results;
(xii) a review of the
validity of EIA predictions and identification of shortcomings of the
recommendations proposed in EIA Report; and
(xiii) comments (for example,
a review of the effectiveness and efficiency of the mitigation measures and of
the performance of the environmental management system, that is, of the overall
EM&A programme);
(xiv) recommendations and
conclusions (for example, a review of success of the overall EM&A programme
to cost-effectively identify deterioration and to initiate prompt effective
mitigation action when necessary).
12.12
No site-based documents (such as monitoring field records, laboratory
analysis records, site inspection forms, etc.) are required to be included in
the EM&A reporting documents. However, any such document should be
properly maintained by the ET and be ready for inspection upon request.
All relevant information should be clearly and systematically recorded in
the document. Monitoring data should also be recorded in magnetic media
form, and the software copy must be available upon request. All documents and
data should be kept for at least one year following the completion of the
construction phase EM&A for each construction contract.
12.13
With reference to the Event and Action Plans, when the environmental
quality performance limits are exceeded and if they are proven to be valid, the
ET should immediately notify the IEC and EPD, as appropriate. The notification should be followed up
with advice to the IEC and EPD on the results of the investigation, proposed
actions and success of the actions taken, with any necessary follow-up
proposals. A sample template for
the interim notification is presented in Appendix D.