1.1.1
According to the
findings of the Northwest New Territories (NWNT) Traffic and Infrastructure
Review conducted by the Transport Department, Tuen Mun
Road, Ting Kau Bridge, Lantau Link and North Lantau
Highway would be operating beyond capacity after 2016. This forecast has been
based on the estimated increase in cross boundary traffic, developments in the
Northwest New Territories (NWNT), and possible developments in North Lantau,
including the Airport developments, the Lantau Logistics Park (LLP) and the Hong
Kong – Zhuhai – Macao Bridge (HZMB). In order to cope with the anticipated
traffic demand, two new road sections between NWNT and North Lantau – Tuen Mun – Chek
Lap Kok Link (TM-CLKL) and Tuen Mun Western Bypass
(TMWB) are proposed.
1.1.2
An Environmental Impact Assessment (EIA) of
TM-CLKL (the Project) was prepared in accordance with the EIA Study Brief (No.
ESB-175/2007) and the Technical Memorandum of the Environmental Impact
Assessment Process (EIAOTM).
The EIA Report was submitted under the Environmental Impact Assessment
Ordinance (EIAO) in August 2009. Subsequent
to the approval of the EIA Report (EIAO Register Number AEIAR-145/2009), an
Environmental Permit (EP-354/2009) for TM-CLKL was granted by the Director of
Environmental Protection (DEP) on 4 November 2009, the VEP (EP-354/2009B) was
issued on 20 September 2012, and the latest VEP (EP-354/2009C) was issued on 10
December 2014. The Project Layout Plan shown in Appendix
A.
1.2.1
CRBC-Kaden Joint Venture (hereafter
“CRBC-Kaden JV”) is commissioned by the Highways Department (HyD) as the Main Contractor of the Contract No. HY/2013/12 -Northern Connection Toll Plaza and
Tunnel Section of the Tuen Mun
– Chek Lap Kok Link (TM-CLK
Link Project). Layout Plan of the Contract shows in Appendix B. The works of the Contract mainly
include:-
a.
construction of an approximately 5.4 hectares
toll plaza and an associated footbridge;
b.
construction of associated carriageways
including approximately 0.74 kilometre land viaducts,
and an approximately 230 metres vehicular underpass
to connect the toll plaza and the roundabout at Lung Mun Road/Lung Fu Road;
c.
site formation for the construction of the
toll plaza, including associated slope works and natural terrain hazard
mitigation measures;
d.
modification and realignment of the existing
Lung Mun Road and Lung Fu Road; and
e.
associated
waterworks, drainage, sewerage and landscaping works, etc..
1.2.2
AECOM Asia Company Limited as the Resident
Engineer (RE) and ENVIRON Hong Kong Ltd as the Independent Environmental
Checker (IEC) and Environmental Project Office (ENPO) were employed by the HyD. For
implementation of the environmental monitoring and audit (EM&A) programme
under the Contract, CRBC-Kaden JV has appointed Action-United Environmental
Services & Consulting (AUES) as the Environmental Team (ET) to responsible
relevant environmental monitoring work.
1.2.3
In view of the
construction works under the Contract, the major construction activities are land-based
works. Hence, the EM&A
programme including water quality and marine ecological
monitoring should not related the Contract works. Moreover, all designated noise
monitoring locations are located in Lantau and noise monitoring is therefore
not required under the Contract. In
accordance with the Project EM&A Manual requirements included air quality,
ecological (Pitcher Plant) monitoring, cultural heritage and site inspections
should be conducted. In addition, landscape and visual (L&V)
monitoring, landfill gas monitoring and audit of the contractor’s
implementation of the construction noise and land-based water quality pollution
control measures are also required for the Contract.
1.2.4
As part of the EM&A
program, baseline air quality monitoring has been carried out by the
Environmental Team HY/2012/08 from 16th to 31st October 2013. A set of Action and
Limit Levels (A/L Levels) of air quality performance criteria as proposed by Environmental
Team of HY/2012/08 would be used for
this Contract.
1.2.5
In September 2013, baseline
survey for Pitcher Plant has been conducted within the project area by a
suitably qualified ecologist. In
mid-September 2014, Contract HY/2013/12 has also conducted a one-off survey to
confirm the number of existing Pitcher Plant. For cultural heritage, a condition
survey for the grave was conducted on 23 September 2014. The Baseline Monitoring
Report for the Contract was submitted on 7 October 2014 for IEC’s verification
and
25 November 2014 for EPD’s endorsement.
1.2.6
The construction phase of the Contract has been commenced
on 23
October 2014. This is 1st monthly EM&A report
presenting the monitoring results and inspection findings for reporting period from 23 October 2014 to 30 November 2014.
1.3.1
The Monthly Environmental Monitoring and
Audit (EM&A) Report is structured into the following sections:-
Section 1 Introduction
Section 2 Contract
Organization and Construction Progress
Section 3 Summary
of Impact Monitoring Requirements
Section 4 Air
Quality Monitoring
Section 5 Ecology
Monitoring
Section 6 Cultural
Heritage
Section 7 Landscape
and Visual
Section 8 Landfill
gas hazard Monitoring
Section 9 Waste
Management
Section 10 Site Inspections
Section 11 Environmental
Complaints and Non-Compliance
Section 12 Implementation
Status of Mitigation Measures
Section 13 Conclusions
and Recommendations
2.1.1
The Contract organization is shown in Appendix C. The
responsibilities of respective parties are:
Highways
Department (HyD)
2.1.2
HyD is the Project Proponent and the Permit Holder of the EP of the development
of the Project and will assume overall responsibility for the project. An
Independent Environmental Checker (IEC) and Environmental Project
Office (ENPO) shall be employed by HyD to audit the results of the EM&A works carried out
by the ET.
Environmental
Protection Department (EPD
2.1.3
EPD is the statutory enforcement body for
environmental protection matters in Hong Kong.
Engineer
or Engineers Representative (ER)
2.1.4
The ER is responsible for overseeing the
construction works and for ensuring that the works are undertaken by the
Contractor in accordance with the specification and contract requirements. The
duties and responsibilities of the ER with respect to EM&A are:
·
Monitor the Contractors’ compliance with
contract specifications, including the implementation and operation of the
environmental mitigation measures and their effectiveness
·
Monitor Contractor’s, ET’s and IEC’s compliance
with the requirements in the Environmental Permit (EP) and EM&A Manual
·
Facilitate ET’s implementation of the
EM&A programme
·
Participate in joint site inspection by the
ET and IEC or EPNO
·
Oversee the implementation of the agreed
Event / Action Plan in the event of any exceedance
·
Adhere to the procedures for carrying out
complaint investigation
The
Contractor
2.1.5
The Contractor should report to the ER. The duties and responsibilities of the
Contractor are:
·
Comply with the relevant contract conditions
and specifications on environmental protection
·
Employ an Environmental Team (ET) to
undertake monitoring, laboratory analysis and reporting of EM &A Facilitate
ET’s monitoring and site inspection activities
·
Participate in the site inspections by the ET
and IEC, and undertake any corrective actions
·
Provide information / advice to the ET
regarding works programme and activities which may contribute to the generation
of adverse environmental impacts
·
Submit proposals on mitigation measures in
case of exceedances of Action and Limit levels in accordance with the Event /
Action Plans
·
Implement measures to reduce impact where
Action and Limit levels are exceeded
·
Adhere to the procedures for carrying out
complaint investigation
Environmental
Team (ET)
2.1.6
The ET shall not be in any way an associated
body of the Contractor, and shall be employed by the Project
Proponent/Contractor to conduct the EM&A programme. The ET should be managed by the ET
Leader. The ET Leader shall be a person who has at least 7 years’ experience in
EM&A and has relevant professional qualifications. Suitably qualified staff
should be included in the ET, and resources for the implementation of the
EM&A programme should be allocated in time under the Contract, to enable
fulfillment of the Project’s EM&A requirements as specified in the EM&A
Manual during construction of the Contract. The ET shall report to the Project
Proponent and the duties shall include:
Ÿ
Sampling, analysis and
statistical evaluation of monitoring parameters with reference to the EIA study
recommendations and requirements in respect of noise, dust and water quality.
Ÿ
Environmental site
surveillance.
Ÿ
Audit of compliance with environmental protection and pollution prevention
and control regulations.
Ÿ
Monitor the implementation of environmental mitigation measures.
Ÿ
Monitor compliance with the environmental protection
clauses/specifications in the Contract.
Ÿ
Review construction programme and comment as necessary.
Ÿ
Review construction methodology and comment as necessary.
Ÿ
Complaint investigation, evaluation and identification of corrective
measures.
Ÿ
Audit of the EMS and recommend and implement any changes as appropriate.
Ÿ
Liaison with the Independent Environmental Checker IEC) on all environmental
performance matters.
Ÿ
Advice to the Contractor on environmental improvement, awareness,
enhancement matter, etc., on site.
Ÿ
Timely submission of the designated EM&A reports to the ER, the IEC,
the DEP, the AFCD and the AMO as appropriate.
Independent
Environmental Checker (IEC)
2.1.7
The Independent Environmental Checker (IEC)
should not be in any way an associated body of the Contractor(s) or the ET for
the Project. The IEC should be
employed by the Permit Holder (i.e., HyD) prior to the commencement of the
construction of the Project. (IEC) shall be employed to advise the ER on environmental issues related
to the project. The role of the IEC
shall be independent from the management of construction works, but the IEC
shall be empowered to audit the environmental performance of the construction
activities and operational mitigation. The IEC shall have project management
experience in addition to the requirements of the ET specified above and the
appointment of the IEC will be subject to the approval of the ER and the
DEP. The IEC may require specialist
support staff in order to properly carry out his duties, which shall include
the following:
Ÿ
Review and audit all
aspects of the EM&A programme.
Ÿ
Validate and confirm the
accuracy of monitoring results, monitoring equipment, monitoring locations,
monitoring procedures and locations of sensitive receivers.
Ÿ
Carry out random sample
check and audit on monitoring data and sampling procedures, etc.
Ÿ
Conduct random site
inspection.
Ÿ
Audit the EIA
recommendations and requirements against the status of implementation of
environmental protection measures on site.
Ÿ
Review the effectiveness
of environmental mitigation measures and project environmental performance.
Ÿ
Audit the Contractor’s construction
methodology and agree the least impact alternative in consultation with the ET
and the Contractor.
Ÿ Check complaint cases and the effectiveness of corrective measures.
Ÿ Review EM&A report submitted by
the ET.
Ÿ Feedback audit results to ET by
signing off relevant EM&A proformas.
Environmental Protection Office
(ENPO)
2.1.8
The responsibility of the ENPO would be similar to that of the IEC but
should also include:
Ÿ
coordination of the monitoring and auditing works for all the on-going
projects in the area in order to identify possible sources/causes of
exceedances and recommend suitable remedial actions where appropriate;
Ÿ
identify and assess cumulative impacts including possible sources/causes
of exceedance and recommending suitable remedial actions;
Ÿ
undertake liaison with the mainland project teams counterparts to identify
and assess any cross-boundary cumulative impacts; and
Ÿ
coordinate the assessment and response to
complaints/enquires from locals, green groups, district councils or the public
at large.
2.2.1
In the Reporting Period, the major
construction activity conducted under the Contract is summarized in below. Moreover, the master construction
program of the Contract is enclosed in Appendix D.
Ÿ Site
Formation at Portion X.
Ÿ Slope stabilization
works at Portion X.
Ÿ Surface
drainage at Portion X.
Ÿ Ground
Investigation Works at various locations
Ÿ Site
Clearance at various locations
Ÿ Erection
of site office at WA18
Ÿ Retaining
Wall at Portions X and I
Ÿ Road Works
Ÿ Piling
Works at Portion I
Ÿ Tree
Felling at Portions X and I
2.3
Summary of Environmental Submissions
2.3.1
To according with the EP stipulation, the
required documents has submitted to EPD for retention as listed below:
Ÿ
Monitoring Plan on construction dust
(submission refer to Contract HY/2012/08)
Ÿ
Landscape and Visual Plan (not yet endorsed by EPD)
Ÿ
Waste Management Plan (not yet endorsed by EPD)
Ÿ
Baseline Monitoring Report (not yet endorsed
by EPD)
2.3.2
Summary of
the relevant permits, licenses, and/or notifications on environmental
protection for the Contract is presented in Table 2-1.
Table 2-1 Status of Environmental
Licenses and Permits of the Contract
|
No.
|
Type of Permit/
License
|
Submission Date
|
Reference/
License No.
|
Date of Issue
|
Date of Expiry
|
|
1
|
Air pollution Control (Construction Dust)
Regulation
|
06-08-2014
|
377719
|
06-08-2014
|
N/A
|
|
2
|
Chemical Waste Producer Registration -
Waste Producers Number
|
06-08-2014
|
5117422C389301
|
03-09-2014
|
N/A
|
|
3
|
Water Pollution Control Ordinance -
Discharge License
|
13-08-2014
|
WT00020065-2014
|
29-09-2014
|
30-09-2019
|
|
4
|
Waste Disposal Regulation - Billing Account
for Disposal of Construction Waste
|
21-07-2014
|
7020460
|
01-08-2014
|
N/A
|
|
5
|
CNP for Construction of Site Office
|
15-08-2014
|
GW-RW0656-14
|
03-09-2014
|
22-02-2015
|
|
6
|
CNP for Site Formation
|
15-09-2014
|
GW-RW0761-14
|
29-09-2014
|
29-03-2015
|
|
7
|
CNP for Concreting
|
15-09-2014
|
GW-RW0748-14
|
29-09-2014
|
29-03-2015
|
3.1.1
In view of the
construction works under the Contract, the major construction activities are
land-based. In accordance with the
Project EM&A Manual requirements, environmental aspect monitoring should be
conducted including air quality, ecological (Pitcher plant), cultural heritage
and site inspections during construction period. In addition, landscape
and visual (L&V) monitoring, landfill gas monitoring and audit of the
contractor’s implementation of the construction noise and land-based water
quality pollution control measures are also required for the Contract.
3.1.2
A summary of construction phase EM&A
requirements are presented in the
sub-sections below.
3.2.1
The construction phase monitoring air quality
shall cover the following parameters:
•
1-hour TSP; and
•
24-hour TSP
3.3.1
The air quality monitoring stations for impact monitoring are listed in Table 3.1 and illustrated in Appendix E.
Table 3-1 Designated
Air Quality Monitoring Stations under the Contract
|
ID
|
Location
|
Air monitoring station Description
|
|
ASR1
|
Tuen Mun Fireboat Station
|
EM&A Manual
|
|
ASR5
|
Pillar Point Fire Station
|
EM&A Manual
|
|
AQMS1
|
Previous River Trade Golf
|
Enhanced TSP Level under EP
condition 2.4
|
|
ASR6
|
Butterfly Beach Laundry
|
Enhanced TSP Level under EP
condition 2.4
|
|
ASR10
|
Butterfly Beach Park
|
Enhanced TSP Level under EP
condition 2.4
|
General Requirement
3.4.1
For regular impact monitoring, the sampling frequency of at least once
in every six days shall be strictly observed at five of the designated
monitoring stations for 24-hr TSP monitoring. For 1-hr TSP monitoring, the sampling
frequency of at least three times in every six days should be undertaken at
five locations when the highest dust impact occurs. The stations to be monitored should be
selected based on the prevailing wind direction and their proximity to the
active construction works.
Special Requirement
3.4.2
As per Condition 2.4 of
the EP of TM-CLKL, an enhanced monitoring plan on TSP level at Tuen Mun (“the
Enhanced TSP Monitoring Plan”) is required to be submitted to the DEP for
approval at least 1 month before the commencement of construction of the Project.
Details of the Enhanced TSP
Monitoring Plan are provided in the Contract specific EM&A Manual. The air quality monitoring work under
this Contract will follow the monitoring requirement of enhanced TSP monitoring
under the project.
3.4.3
The air quality monitoring
requirements for the Contract is shown in Table 3-2.
Table 3-2 Enhanced TSP Monitoring Plan –
Construction Phase
|
Condition
|
Monitoring
Parameter
|
Monitoring
Location
|
Frequency
|
Monitoring Requirement
|
|
General
|
1-hour TSP
|
ASR1, ASR5, AQMS1, ASR6, ASR10
|
3 times per day every six days
|
Throughout the Northern Connection, toll plaza and tunnel buildings
construction works
|
|
24-hour TSP
|
ASR1, ASR5, AQMS1, ASR6, ASR10
|
Daily every six days
|
|
Special
|
1-hour TSP
|
ASR1, ASR5, AQMS1, ASR6, ASR10
|
3 times per day every three days
|
Northern Connection
During excavation works for launching shaft, excavation work for Cut and
Cover Tunnel and Cut and Cover Tunnel Construction
Toll Plaza
During excavation, slope works, construction of road and superstructures
and wind erosion from open sites and stockpiling areas
Tunnel Buildings
During excavation, foundation works, construction of superstructures and
wind erosion from open sites and stockpiling areas
|
|
24-hour TSP
|
ASR1, ASR5, AQMS1, ASR6, ASR10
|
Daily every three days
|
3.5.1
The 24-hour and 1-hour TSP levels shall be
measured by following the standard high volume sampling method as set out in
the Title 40 of the Code of Federal
Regulations, Chapter 1 (Part 50), Appendix B.
3.5.2
A high volume sampler in
compliance with the following specifications shall be used for carrying out the
1-hr and 24-hr TSP monitoring:
(i)
0.6-1.7 m3/min (20-60
SCFM) adjustable flow range;
(ii)
equipped with a
timing/control device with +/- 5 minutes accuracy for 24 hours operation;
(iii)
installed with
elapsed-time meter with +/- 2 minutes accuracy for 24 hours operation;
(iv)
capable of providing a
minimum exposed area of 406 cm2 (63 in2);
(v)
flow control accuracy:
+/- 2.5% deviation over 24-hr sampling period;
(vi)
equipped with a shelter
to protect the filter and sampler;
(vii)
incorporated with an
electronic mass flow rate controller or other equivalent devices;
(viii) equipped with a flow recorder for continuous monitoring;
(ix)
provided with a peaked
roof inlet;
(x)
equipped with a
manometer;
(xi)
able to hold and seal
the filter paper to the sampler housing in a horizontal position;
(xii)
easy to change the
filter; and
(xiii)
capable of operating continuously for 24-hr period.
3.5.3
Calibration of dust
monitoring equipment shall be conducted by the ET upon installation and
thereafter at bi-monthly intervals. The transfer standard shall be traceable to
the internationally recognized primary standard and be calibrated annually. The
calibration data shall be properly documented for future reference by concerned
parties, such as the IEC. All the data shall be converted into standard
temperature and pressure condition.
3.5.4
The filter paper of 24-hour TSP measurement shall be determined by HOKLAS
accredited laboratory.
3.5.5
If the ET proposes to
use a direct reading dust meter to measure 1-hr TSP levels on an ad hoc basis,
he shall submit sufficient information to the IEC to prove that the instrument
is capable of achieving a comparable result as that the High Volume Sampler
(HVS) and may be used for the 1-hr sampling. The instrument should also be calibrated
regularly and the 1-hr sampling shall be checked periodically by the HVS to
check the validity and accuracy of the results measured by the direct reading
method.
3.5.6
According to the Project EM&A Manual,
wind data monitoring equipment shall also be provided and set up for logging
wind speed and wind direction near the dust monitoring locations. The equipment installation location
shall be proposed by the ET and agreed with the IEC. For
installation and operation of wind data monitoring equipment, the following
points shall be observed:
(i)
the wind sensors should
be installed on masts at an elevated level 10 m above ground so that they are
clear of obstructions or turbulence caused by the buildings;
(ii)
the wind data should be
captured by a data logger to be down-loaded for processing at least once a
month;
(iii)
the wind data monitoring
equipment should be re-calibrated at least once every six months; and
(iv)
wind direction should be divided into 16 sectors of 22.5 degrees each.
3.6.1
The baseline monitoring
results formed the basis for determining the air quality criteria for the
impact monitoring. The ET shall compare the impact monitoring results with air
quality criteria set up for 24-hour TSP and 1-hour TSP. Based on results of the approved
Baseline Monitoring Report of HyD Contract
HY/2012/08, the proposed Action and Limit Levels are shown in Tables
3-3.
Table
3-3 TSP
Action and Limit Levels for Impact Air Quality Monitoring
|
Air Quality Monitoring Stations
|
24-hour TSP (μg/m3)
|
1-hour TSP (μg/m3)
|
|
Action Level
|
Limit Level
|
Action Level
|
Limit Level
|
|
ASR1
|
213
|
260
|
331
|
500
|
|
ASR5
|
238
|
260
|
340
|
500
|
|
AQMS1
|
213
|
260
|
335
|
500
|
|
ASR6
|
238
|
260
|
338
|
500
|
|
ASR10
|
214
|
260
|
337
|
500
|
3.6.2
Should non-compliance of the environmental
quality criteria occurs, remedial actions will be triggered according to the
Event and Action Plan which presented in Appendix F.
Noise
3.7.1
The TM-CLKL EIA study
concluded that no existing noise sensitive receiver (NSR) was identified within
the Study Area at Tuen Mun.
Therefore, no planned NSR designated at the Project sites of Tuen Mun. Based upon this, no noise monitoring is
necessary for construction phase under the Contract.
3.7.2
Regular site inspections
and audits will be carried out during the construction phase in order to
confirm compliance with the regulatory requirements and conformity of the
Contractor with regard to noise control and contract conditions.
Water Quality
3.7.3
No marine works will be
undertaken under the Contract.
Based upon this, no water quality monitoring is necessary for
construction phase.
Ecology
3.7.4
Since the Works of the Contract
would not be to generate the marine ecological impact, no dolphin monitoring
under the Contract to conduct.
3.7.5
During construction phase, the ET
will perform Pitcher Plants regularly
inspection at least once every week to report
the growth and protection
measure situation.
Landscape and Visual
3.7.6
According to EIA recommendation,
site inspection and audit
shall be required to be undertaken in the operation stage. Measures
to mitigate landscape
and visual impacts during construction should be checked and monitored by a
Registered Landscape Architect to ensure compliance with the intended aims of
the mitigation measures in accordance with the EM&A
Manual.
Cultural Heritage
3.7.7
Grave G1 of heritage resources is situated near the proposed
toll plaza in Tuen Mun. Site inspections should be undertaken
at least once per week throughout the construction period to ensure
compliance with the intended aims of recommended mitigation measures.
Monitoring and
Measurement of Landfill Gas
3.7.8
During EIA study,
landfill gas hazards are likely to be generated from the Pillar Point Valley (PPV)
Landfill. Hence, regular landfill gas monitoring is recommended during
construction of the proposed toll plaza. Safety Officer or an approved and
appropriated qualified person should be carried out the monitoring works to
make sure the area free of landfill gas before any man enters in the area.
3.7.9
Depending on the results of the measurements, actions
required will vary and should be set down by the Safety Officer or other
appropriately qualified person. As a minimum these should encompass those
actions specified as follow:
Table 3-4 Actions in the Event of Landfill Gas
being Detected in Excavation / Confined Area
|
Parameter
|
Measurement
|
Action
|
|
Oxygen
|
<
19%
|
-
Ventilate to restore oxygen to > 19%
|
|
<
18%
|
- Stop work
- Evacuate personnel /
prohibit entry
-
Increase ventilation to restore to > 19%
|
|
Methane
|
> 10% LEL (> 0.5%
v/v)
|
- Prohibit hot work
- Ventilate to restore
methane to < 10% LEL
|
|
> 20% LEL (>1%
v/v)
|
- Stop work
- Evacuate personnel /
prohibit entry
-
Increase ventilation to restore to < 10%
|
|
Carbon Dioxide
|
>
0.5%
|
-
Ventilate to restore oxygen to < 0.5%
|
|
>
1.5%
|
- Stop work
- Evacuate personnel /
prohibit entry
-
Increase ventilation to restore to < 0.5%
|
4.1.1
The air quality impact monitoring and enhanced
Total Suspended Particulates (TSP) level monitoring perform the five proposed
locations are currently carried out by the ET of Contract HY/2012/08. Sharing of impact air quality monitoring
data between HY/2012/08 and HY/2013/12 is agreed by all relevant parties. Therefore the Contract is not required
to conduct its own dust monitoring exercise until the Contract HY/2012/08 is
ended.
4.2.1
In the Reporting Period, 1-hr TSP and 24-hours
TSP monitoring were carried out at five proposed locations by the ET of Contract
HY/2012/08. The detailed information
of air quality monitoring could be referred to the Monthly EM&A Reports of
the Contract HY/2012/08 (October 2014 and November 2014).
4.3.1
According to the air quality monitoring
results provided Contract HY/2012/08, no exceedances in 24-hour TSP were
recorded but a total of two (2) exceedances of 1-hour TSP were triggered in the
Reporting Period. Notification on
Exceedances (NOEs) to all relevant parties has been issued by the ET of Contract
HY/2012/08 upon the results was confirmed.
The summary of air quality exceedance is shown in Table 4-1.
Table 4-1 Summary
of Air Quality Monitoring Exceedance
|
Date of Exceedance
|
Monitoring Station
|
Air Quality
Parameter
|
Result
|
Exceed
|
|
14 Nov 2014
|
ASR1
|
1-hour TSP
|
404μg/m3
396μg/m3
|
Action Level
|
4.3.2
Investigation report for the cause of
exceedances has been completed and submitted to relevant parties and it has
been shown in Appendix H.
1-hour TSP exceedance
dated 14 November 2014
4.4.1
Upon received the
notification of exceedance, investigation has been undertaken by the ET of the
Contract. According to site information
provided by CRBC-Kaden JV, site formation works was conducted on 14 November
2014. To reduce to dust impact
arises from the contract. mitigation measures for construction dust control
were implementation and they are included the following:-
Ÿ
watering of haul road by
water truck to keep road surface wet
Ÿ
to set speed control at
5 km/hr for all vehicles using the haul road
Ÿ
most soil stockpiles
were well compacted
Ÿ
installation of
auto-water sprinkler in dusty area
Ÿ
provide water spraying
during rock breaking work
Ÿ
covered part of the
exposed slopes by geotextile net
4.4.2
During the subsequent
site inspection, it was observed the above-mentioned dust mitigation measures
were implemented and the site condition is acceptable.
4.4.3
Moreover, the exceedance
location ASR1 is located over 800m from the working area. There are other
monitoring locations closer to the active site area, such as ASR5 and ASR6, and
the relevant monitoring results were reviewed. With referenced to the monitoring
results collected at other stations, ASR5 is ranged 114-226μg/m3 and
ASR6 is ranged 108-130μg/m3 and no exceedances were triggered.
4.4.4
Based on above
investigation, the exceedance is unlikely related to the Contract work and no
corrective action was required accordingly.
5.1.1
According to the
EM&A Manual requirements, regularly
inspection for Pitcher Plants at least once every week to report it growth and protection measure situation shall be conducted during construction period.
5.2.1
In the Reporting Period,
inspections for the condition of the Pitcher Plants and mitigation measures were
carried out by the Contractor on 24th
and 31st October 2014, 7th, 14th, 21st
and 28th November 2014. It was observed that hoarding along the
works boundary for protecting the Pitcher Plants was not yet installed. However, wire fencing has been provided
as the temporary protection. As
advised by CRBC-Kaden
JV, the
design of the hoarding and installation is currently in progress.
5.2.2
During each occasion of
site inspection, no construction activities were found to be conducted nearby the
protected areas of Pitcher Plants and the growth of Pitcher Plants is kept
normal condition.
6.1.1
According to the EM&A Manual
requirements, regular inspection for heritage resource Grave G1 shall be
audited by the ET at least once every week to ensure recommended mitigation
measures implemented during construction period The aim of the survey is
prevention of any possible damage to the grave and to ensure that proposed
mitigation measures area implemented. The broad scope of the audit will involve
supervision of the following:
Ÿ
Non-contact effects of
the engineering works, such as vibration from pneumatic drills which could case damage, such as foundation or wall cracks and
loosening of tiles or fixtures; and
Ÿ
Contact between the historic
structures and equipment and materials associated with the engineering works.
6.1.2
Specifically, the
monitoring programme will entail the following tasks:
Ÿ
The extent of the agreed
works areas should be regularly checked during the construction phase to ensure
the buffer is being maintained; and
Ÿ
Ensure no stockpiling or
equipment storage is affecting the structure.
6.1.3
In the event of non compliance the responsibilities of the relevant parties
is detailed in the Event/ Action Plan in Appendix F.
6.2.1
In the Reporting Period,
site inspection for the Grave G1 was undertaken on 28th October 2014, 4th, 11th, 19th
and 25th November 2014.
During site inspection, buffer zone was observed between the working area
and the Grave and no construction material or equipment was stored nearby the
Grave.
6.2.2
Mitigation measures
undertaken by the Contractor has fully implemented the EM&A Manual requirements.
7.1.1
According to EM&A
Manual requirements, monitoring of Contractor’s operations during construction
period to report on Contractor’s compliance should be carried out on weekly
basis. Measure to mitigate landscape and
visual impact during construction should be checked and monitored by a
Registered Landscape Architect to ensure compliance with the intended aims of
the mitigation measures. Moreover, the progress
of the engineering works shall be regularly reviewed on site to identify the
earliest practical opportunities for the landscape works to be undertaken.
7.2.1
In the Reporting Period,
site inspection for landscape and visual mitigation measures was undertaken on 24th and 31st October
2014, 7th, 14th, 21st and 28 November 2014
by the Contractor. During the site
inspection, all the existing trees were properly protected and kept away from
construction works. Sand bags were
erected at sensitive areas to ensure no runoff into water body. Most of the landscape works such as
hydro-seeding and planting were not yet commenced. The detailed inspection checklists were
provided in Appendix J.
8.1.1
During EIA study,
landfill gas hazards are likely to be generated
from the Pillar Point Valley (PPV) Landfill. Hence, regular landfill
gas monitoring is recommended during construction of the proposed toll plaza.
8.1.2
During construction, a
Safety Officer should be appointed to carry out the monitoring works. The
monitoring frequency and areas to be monitored should be set down prior to
commencement of ground-works either by the Safety Officer or an approved and appropriated
qualified person. The routine monitoring should be carried out in all excavations,
manholes, chambers, relocation of monitoring wells and any other confined
spaces that may have been created. All measurements in excavations should be
made with the extended monitoring tube located not more than 10 mm from the exposed
ground surface. Monitoring should be performed properly to make sure that the
area is free of landfill gas before any man enters in the area.
8.1.3
For excavations deeper
than 1m, measurements should be carried out:
Ÿ
at the ground surface
before excavation commences;
Ÿ
immediately before any
worker enters the excavation;
Ÿ
at the beginning of each
working day for the entire period the excavation remains open; and
Ÿ
periodically through the working day
whilst workers are in the excavation.
8.1.4
For excavations between
300mm and 1m deep, measurements should be carried out:
Ÿ
directly after the
excavation has been completed; and
Ÿ
periodically whilst the
excavation remains open
8.1.5
For excavations less
than 300mm deep, monitoring may be omitted, at the discretion of the Safety
Officer or other appropriately qualified person.
8.1.6
To ensure the accuracy of the
monitoring data, zeroing of the gas analyser shall be
undertaken at the start of each day’s monitoring. As part of the QA/QC, calibration of the
gas analyser shall be conducted at least once every
two weeks according to the specification of the manufacturer’s operation
manual.
8.2.1
In the Reporting Period, landfill gas monitoring was conducted at the
construction of Retaining Wall B and
Retaining Wall F and the locations are illustrated in Appendix E. A BIOGAS 5000 gas analysis was used for the landfill
gas monitoring and the valid calibration certificate is presented in Appendix G.
8.2.2
There were total 32 workings days monitoring were carried by the Safety Officer or an approved and
qualified persons. Table 8-1 is summarized landfill gas
measurement results. Moreover,
field data sheet and graphical plot are attached in Appendix H.
Table 8-1 Summary of Landfill
Gas Measurement Results in Reporting Period
|
Landfill Gas Parameter
|
Action Level
|
Limit Level
|
Detectable
at Retaining Wall B
|
Detectable
at Retaining Wall F
|
|
Min
|
Max
|
Min
|
Max
|
|
Methane
|
>10% LEL (>0.5% v/v)
|
>20% LEL (>1% v/v)
|
0%
|
0%
|
0%
|
0%
|
|
Oxygen
|
<19%
|
<18%
|
21.0%
|
21.4%
|
21.0%
|
21.3%
|
|
Carbon Dioxide
|
>0.5%
|
>1.5%
|
0.0%
|
0.3%
|
0.0%
|
0.3%
|
8.2.3
The measurement results
shown no methane concentration was detected and all oxygen concentration were over 21% and Carbon Dioxide was between 0.0 and 0.3
%. No corrective action was
required accordingly.
9.1.1
Waste management was carried out by an
on-site Environmental Officer or an Environmental Supervisor from time to time.
The effective management of waste arisings during the
construction phase will be monitored through the site audit programme. The aims
of the waste audit are:
l to ensure
the waste arising from the works are handled, stored, collected, transferred
and disposed of in an environmentally acceptable manner; and
l to encourage the reuse and recycling of material.
9.1.2
In addition to the site inspections, the ET
shall review the documentation procedures prepared by the Waste Coordinator
once a week to ensure proper records are being maintained and procedures undertaken
in accordance with the Waste Management Plan.
9.2.1
All types of waste arising from the
construction work are classified into the following:
l Construction
& Demolition (C&D) Material;
l Chemical
Waste;
l General
Refuse; and
l Excavated
Soil.
9.2.2
The quantities of waste for disposal in this
Reporting Period are summarized in Tables 9-1 and 9-2 and the Monthly
Summary Waste Flow Table is shown in Appendix K. Whenever possible, materials were reused
on-site as far as practicable.
Table 9-1 Summary of
Quantities of Inert C&D Materials
|
Type of Waste
|
Quantity
|
Disposal Location
|
|
Reused in this
Contract (Inert) (`000m3)
|
5.41
|
-
|
|
Reused in other
Projects (Inert) (`000m3)
|
15.061
|
HY/2012/08
|
|
Disposal as Public
Fill (Inert) (`000m3)
|
92.693
|
Tuen Mum Area 38
|
Table 9-2 Summary
of Quantities of C&D Wastes
|
Type of Waste
|
Quantity
|
Disposal Location
|
|
|
0
|
-
|
|
Recycled
Paper / Cardboard Packing (`000kg)
|
0
|
-
|
|
Recycled
Plastic (`000kg)
|
0
|
-
|
|
Chemical
Wastes (`000kg)
|
0
|
-
|
|
General Refuses
(`000m3)
|
0.016
|
WENT
|
10.1.1
According to the approved EM&A Manual,
the environmental site inspection shall be formulation by ET Leader. Weekly environmental site inspections
should carry out to confirm the environmental performance.
Findings / Deficiencies During
Reporting Period
10.1.2
In the Reporting Period, joint site
inspection to evaluate site environmental performance has been carried out by
the RE, ET and the Contractor on 28th October 2014, 4th, 11th, 19th
and 25th
November 2014. No
non-compliance was noted but five (5) observations and five (5) reminders
were recorded during site inspections. Moreover, IEC or ENPO has
attended joint site inspection on 28
October 2014 and 25 November 2014.
10.1.3
The findings / deficiencies observed during
the weekly site inspection are listed in Table 10-1.
Table 10-1 Site
Observations for the Contract
|
Date
|
Findings
/ Deficiencies
|
Follow-Up
Status
|
|
28 Oct 2014
|
Ÿ
It was reminded that properly
facities should be provided for all chemical wastes and plants to prevent
land contamination.
|
Ÿ Not required for reminder.
|
|
|
Ÿ
It was reminded that Air quality
mitigation measures should be provide to prevent construction dust emission
during dry and windy season.
|
Ÿ Not required for reminder.
|
|
04 Nov 2014
.
|
Ÿ C&D
waste scattered at the site office construction area was observed. The
Contractor was should improve housekeeping on site and provide more waste
skip for waste storage.
|
Ÿ
The
deficiency has been rectified before site inspection on 19
November 2014.
|
|
Ÿ
Stockpile without any cover was
observed. The Contractor was requested to provide proper dust mitigation
measures for stockpile to minimize dust generation
|
Ÿ
The
deficiency has been rectified before site inspection on 25
November 2014.
|
|
Ÿ
It was reminded that air quality
mitigation measures should be provide to prevent construction dust emission
during dry and windy season.
|
Ÿ Not required for reminder.
|
|
11 Nov 2014
|
Ÿ
C&D material scattered at the
site office construction area was observed. Housekeeping should be improved to
maintain the site clean and tidy.
|
Ÿ
The
deficiency has been rectified in before site inspection on 19
November 2014.
|
|
|
Ÿ
Earth bund should be provided to
prevent muddy surface run-off discharged into the stream near the wheel
washing bay
|
Ÿ
The
deficiency has been rectified in before site inspection on 25
November 2014.
|
|
|
Ÿ
Residual sand and mud was observed
retain on haul road behind the wheel washing bay. The Contractor should cleaned
up the wheel washing bay regularly to make sure its effective.
|
Ÿ
To be
followed up in next reporting period.
|
|
19 Nov 2014
|
Ÿ No environmental
issue was observed
|
Ÿ NA
|
|
25 Nov 2014
|
Ÿ The Contractor was reminded that all plants
using on site shall be properly maintenance to prevent smoke emission.
|
Ÿ Not required for reminder.
|
|
|
Ÿ The Contractor was reminded that during the
breaking activities, dust mitigation measures should be applied to prevent
dust generation.
|
Ÿ Not required for reminder.
|
10.1.4
During
dry and windy season, air quality mitigation measures should be provide to reduce construction
dust impact.
10.1.5
Moreover, weekly tidiness and daily cleaniness of general housekeeping should be implemented
in accordance with the EM&A Manual recommendation. Furthermore, tree protected fences
should be provided for all the retained trees and chemical waste storage area
should be set-up for all chemical waste disposes on site.
11.1.1
For the Contract, no environmental complaint,
summons and prosecution was received in the Reporting Period. However, there were 2 exceedances of the
environmental performance limit (Action and Limit Level). The statistical summary table of environmental
exceedance, complaint, summons and prosecution is presented in Tables
11-1, 11-2, 11-3 and 11-4.
Table 11-1 Statistical Summary of
Environmental Exceedance
|
Reporting Period
|
Environmental
Aspect
|
Frequency
|
Cumulative
|
|
23 October 2014 –
30 November 2014
|
1-hr TSP
|
Action
|
2
|
0
|
2
|
0
|
|
Limit
|
0
|
0
|
0
|
0
|
|
24-hr TSP
|
Action
|
0
|
0
|
0
|
0
|
|
Limit
|
0
|
0
|
0
|
0
|
Table 11-2 Statistical Summary of
Environmental Complaints
|
Reporting Period
|
Environmental
Complaint Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
Air
|
Noise
|
Water
|
|
23 October 2014 –
30 November 2014
|
0
|
0
|
NA
|
NA
|
NA
|
Table 11-3 Statistical Summary of
Environmental Summons
|
Reporting Period
|
Environmental
Summons Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
Air
|
Noise
|
Water
|
|
23 October 2014 –
30 November 2014
|
0
|
0
|
NA
|
NA
|
NA
|
Table 11-4 Statistical Summary of
Environmental Prosecution
|
Reporting Period
|
Environmental
Prosecution Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
Air
|
Noise
|
Water
|
|
23 October 2014 –
30 November 2014
|
0
|
0
|
NA
|
NA
|
NA
|
12.1.1
The environmental mitigation measures that
recommended in the Implementation Schedule for Environmental Mitigation
Measures (ISEMM) in the Project EM&A Manual covered the issues of Air Quality, Cultural Heritage, Ecology, Landfill Gas Hazard, Landscape & Visual,
Noise, Water and Waste and they are presented in Appendix L.
12.1.2
The Contract shall be implementing the
required environmental mitigation measures according to the EM&A Manual as
subject to the site condition.
Environmental mitigation measures generally implemented by the Contract
in this Reporting Period are summarized in Table 12-1.
Table 12-1 Environmental
Mitigation Measures
|
Issues
|
Environmental Mitigation Measures
|
|
Air Quality
|
· Maintain damp / wet surface
on access road;
· Keep slow speed in the sites;
· All vehicles must use wheel
washing facility before off site;
· Sprayed water during rock breaking
works;
· During transportation by truck, materials loaded lower
than the side and tail boards, and covered before transport;
· Compacted all soil stockpiles; and
· Part of the exposed slopes covered geotextile net
|
|
Cultural Heritage
|
· Set a buffer zone between the working area
and the Grave
· All construction materials and equipment store far from
the Grave
· Inspection the Grave to ensure provision mitigation
measures effective
|
|
Ecology
|
·
Wire fencing provided for
temporary protect Pitcher Plants
·
Undertake weekly
inspection of Pitcher Plants
|
|
Landfill Gas Hazard
|
·
Landfill Gas
measurement undertake during trench excavation
|
|
Water Quality
|
· Temporary drainage system
provide for surface runoff prevent discharge to public area
· Wastewater to be treated by
sedimentation tank before discharge.
|
|
Noise
|
· Restrain operation time of
plants from 07:00 to 19:00 on any working day except for Public Holiday and
Sunday.
· Keep good maintenance of
plants
· The noisy plants or works provide
mobile noise barriers
· Shut down the plants when
not in used.
|
|
Waste and Chemical
Management
|
· On-site sorting prior to
disposal
· Follow requirements and
procedures of the “Trip-ticket System”
·
Predict required quantity of concrete accurately
· Collect the unused fresh concrete at designated
locations in the sites for subsequent disposal
|
|
General
|
· The site was generally kept
tidy and clean.
|
12.2.1
Construction activities as undertaken in the
coming month for the Contract lists below:
Ÿ Construction
of Haul Roads to Slope A, B, C, D & E
Ÿ Excavation
to Slope A, B & E
Ÿ Slope
stabilization works
Ÿ Surface
drainage
Ÿ Ground
Investigation Works
Ÿ Site
Clearance
Ÿ Erection
of ER’s and CKJV’s site office
Ÿ Civil
works of ER’s and CKJV’s site office
Ÿ Retaining
Wall B & F
Ÿ Road Works
Ÿ Piling
Works
Ÿ Tree
Felling
12.3.1
Key environmental issues to be considered in
the coming month include:
Ÿ
Implementation of dust
suppression measures at all times;
Ÿ
Potential wastewater
quality impact due to surface runoff;
Ÿ
Potential fugitive
dust quality impact due from the dry/loose/exposure soil surface/dusty
material;
Ÿ
Ensure dust suppression measures are
implemented properly;
Ÿ
Sediment catch-pits and silt removal
facilities should be regularly maintained;
Ÿ
Management of chemical wastes;
Ÿ
Site effluent discharge to the nearby nullah is
prohibited;
Ÿ
Follow-up of improvement on general waste
management issues; and
Ÿ
Implementation of construction noise
preventative control measures
13.1.1
This is 1st
monthly EM&A report presenting the monitoring results and inspection
findings for the Reporting Period from 23 October 2014 to 30 November 2014.
13.1.2
No exceedances of 24-hour TSP monitoring were
recorded in the Reporting Period. However,
there were two exceedances of 1-hour TSP measurements trigger in Action Level
at ASR1 on 14 November 2014. NOE was issued by the ET of HY/2012/08 to notify all relevant parties. Based on
investigation finding, the exceedance is unlikely related with the works under
the Contract and no corrective action was required for the Contract accordingly.
13.1.3
In this Reporting Period, no noise complaint was received by RE, the Contractor, ENPO or HyD. No Action Level exceedances were triggered and no NOE or the associated corrective actions were therefore issued.
13.1.4
Site inspections for
landscape and visual have been conducted on weekly basis
to check by the Contractor and ensure if the condition compliance with the
intended aims of the mitigation measures.
During the site inspection, all the existing trees
were properly protected and kept away from construction works. Sand bags were erected at sensitive
areas to ensure no runoff into water body.
Most of the landscape works such as hydro-seeding and planting were not
yet commenced.
13.1.5
Landfill gas monitoring was
conducted at the
construction of Retaining
Wall B and Retaining Wall F by the Safety Officer. The
monitoring results shown no exceedances were triggered.
13.1.6
No documented a complaint, notification of
summons or successful prosecution is received by the Contract.
13.1.7
Joint site
inspection by the RE, ET and CRBC-Kaden JV was carried out on 28th October
2014, 4th, 11th, 19th and 25th
November 2014. Moreover, IEC or ENPO attended
joint site inspection On 28 October 2014 and 25 November 2014. No
non-compliance was recorded during the site inspection but five (5) observations
and five (5) reminders were recorded during site inspections. All the deficiencies were rectified before next site inspection date. The environmental performance of the Contract was therefore considered as
satisfactory.
13.1.8
In the Reporting Period,
hoarding along the works boundary for protecting the Pitcher Plants was not yet
installed. However, wire fencing
has been provided as the temporary protection. As advised by CRBC-Kaden JV, the design of the hoarding and installation is currently working in
progress. During each occasion of
site inspection, no construction activities were found to be conducted nearby the
protected areas of Pitcher Plants and the growth of Pitcher Plants is kept in normal
condition.
13.1.9
For cultural heritage,
the buffer zone between the working area
and the Grave was observed and no construction material or equipment was stored
nearby.
13.1.10
No joint site inspection was undertaken with
any external parties i.e. EPD and AFCD in this Reporting Period.
13.2.1
During dry season, special attention should
be paid on the potential construction dust impact. The Contractor should fully implement
the construction dust mitigation measures properly.
13.2.2
Water quality mitigation measures such as prevention of muddy water and
other water quality pollutants via site
surface water runoff get into public area should be avoided.
13.2.3
It was reminded
that good housekeeping practice should be maintained. Mosquito control measures should be properly
implemented to prevent mosquito breeding on site.
