Executive Summary
1 Introduction
1.1 Background
1.2 Scope of Report
1.3 Organization Structure
1.4 Summary of Construction Works
2 EM&A Results
2.1 Air quality
2.2 Landfill Gas Hazard
Monitoring
2.3 EM&A Site Inspection
2.4 Waste Management Status
2.5 Environmental Licenses and
Permits
2.6 Implementation Status of
Environmental Mitigation Measures
2.7 Summary of Exceedances of the
Environmental Quality Performance Limit
2.8 Summary of Complaints,
Notification of Summons and Successful Prosecutions
3 Future Key Issues
3.1 Construction Activities for
the Coming Month
3.2 Key Issues for the Coming
Month
4 Conclusions and recommendations
4.1 Conclusions
List of Appendices
Appendix A Project Organization for Environmental Works
Appendix B Three
Month Rolling Construction Programmes
Appendix C Implementation
Schedule of Environmental Mitigation Measures (EMIS)
Appendix D Summary
of Action and Limit Levels
Appendix E Event
Action Plan
Appendix F Monthly
Summary of Waste Flow Table
Appendix
G Cumulative Statistics on Exceedances, Complaints,
Notifications of Summons and Successful Prosecutions
Executive
Summary
Under Contract
No. HY/2017/10, Gammon Construction Limited (GCL) is commissioned by the
Highways Department (HyD) to undertake Northern Connection Tunnel Buildings,
Electrical and Mechanical Works of the Tuen Mun – Chek Lap Kok Link Project (TM-CLK
Link Project) while AECOM Asia Company Limited was appointed by HyD as the
Engineer. For implementation of the
environmental monitoring and audit (EM&A) programme under the Contract, ERM-Hong
Kong, Limited (ERM) has been appointed as the Environmental Team (ET) in
accordance with Environmental Permit No.
EP-354/2009/A. Ramboll Hong Kong Ltd. was employed by HyD as
the Independent Environmental Checker (IEC) and Environmental Project Office
(ENPO). Subsequent
applications for variation of environmental permits (VEP), EP-354/2009/B, EP-354/2009/C and
EP-354/2009/D, were granted on 28
January 2014, 10 December 2014 and 13 March 2015, respectively.
The construction phase of the Project commenced on 7
June 2018 and will tentatively be completed by 2021. The impact monitoring of the EM&A
programme, including air quality and environmental site inspections, were commenced
on 7 June 2018. In addition, landfill
gas monitoring shall be carried out for the Project in accordance with
the Updated EM&A Manual for TM-CLK Link Project (Agreement No. CE 52/2007).
This is the First Monthly EM&A report presenting
the EM&A works carried out during the period from 7 to 30 June 2018 for the
Contract No. HY/2017/10 Northern Connection Tunnel
Buildings, Electrical and Mechanical Works
(the “Project”) in accordance with the Updated EM&A Manual of the
TM-CLK Link Project. As informed by the Contractor, major
activities in the reporting period included:
Land-based Works
·
Bar bending and timber formwork at Toll Control Building
and Ventilation Plant Room;
·
ER’s and the Contractor’s site offices erection at
WA18; and
·
Additional land ground investigation (GI) at
Administration Building, trial pits and laboratory testing.
A summary of monitoring and audit activities conducted
in the reporting period is listed below:
24-hour TSP Monitoring 8
sessions
1-hour TSP Monitoring 8
sessions
Joint Environmental Site Inspection 4 sessions
Summary of Breaches of Action/Limit Levels
Breaches of
Action and Limit Levels for Air Quality
No exceedance of 1-hour and 24-hour TSP was recorded in
this reporting month.
Environmental Complaints, Non-compliance & Summons
There was no environmental complaint, notification of
summons or successful prosecution recorded in the reporting period.
Reporting Change
There was no reporting change in the reporting period.
Upcoming Works for the Next Reporting Month
Works to be undertaken in the next monitoring period of
July 2018 include the following:
Land-based Works
·
Bar bending and timber formwork at Toll Control
Building and Ventilation Plant Room;
·
ER’s and the Contractor’s site offices erection at
WA18; and
·
Socket H-pilling at Administration Building.
Future Key
Issues
Potential environmental impacts arising from the above
upcoming construction activities in the next reporting month of July 2018 are
mainly associated with dust and waste management issues.
1
Introduction
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.
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 (EIAO-TM). 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-146/2009), an Environmental Permit
(EP-354/2009) for TM-CLKL was granted by the Director of Environmental
Protection (DEP) on 4 November 2009, and EP variation (VEP) (EP-354/2009/A) was
issued on 8 December 2010. Subsequent
applications for variation of environmental permits (VEPs), EP-354/2009/B, EP-354/2009/C and EP-354/2009/D, were granted on 28
January 2014, 10 December 2014 and 13 March 2015, respectively.
Under Contract
No. HY/2017/10, Gammon Construction Limited (GCL) is commissioned by the
Highways Department (HyD) to undertake the Northern Connection Tunnel
Buildings, Electrical and Mechanical Works of TM-CLKL while AECOM
Asia Company Limited was appointed by HyD as the Engineer. For implementation of the environmental
monitoring and audit (EM&A) programme under the Contract, ERM-Hong Kong,
Limited (ERM) has been appointed as the Environmental Team (ET). Ramboll Hong
Kong Ltd. was employed by HyD as the Independent Environmental Checker (IEC)
and Environmental Project Office (ENPO).
The construction phase of the Contract commenced on 7
June 2018 and will be tentatively completed by 2021. The impact monitoring phase of the EM&A
programme, including air quality and environmental site inspections, commenced
on 7 June 2018.
The general layout plan of the Contract components is
presented in Figures 1.1 & 1.2a to c.
This is the First
Monthly EM&A Report under the Contract No.
HY/2017/10 Tuen Mun – Chek Lap Kok Link – Northern Connection Tunnel Buildings,
Electrical and Mechanical Works. This report presents a summary of the
environmental monitoring and audit works in June 2018.
1.3
Organization Structure
The organization structure of the Contract is shown in
Appendix A. The
key personnel contact names and contact details are summarized in Table 1.1 below.
Table 1.1 Contact Information of Key Personnel
|
Party
|
Position
|
Name
|
Telephone
|
Fax
|
|
HyD (Highways
Department)
|
Project
Coordinator
|
Joseph Lee
|
2762 4958
|
3188 6614
|
|
|
Senior
Engineer
|
Cheng Pan
|
2762 3383
|
3188 6614
|
|
ER
(AECOM Asia
Company Limited)
|
Principle
Resident Engineer
|
S. W. Fok
|
2293 6200
|
2293 6300
|
|
|
Resident
Engineer
|
Desmond Fung
|
2293 6200
|
2293 6300
|
|
ENPO / IEC
(Ramboll Hong Kong Ltd.)
|
ENPO Leader
|
Y.H. Hui
|
3465
2850
|
3465 2899
|
|
IEC
|
Dr. F.C. Tsang
|
3465
2851
|
3465 2899
|
|
Contractor
(Gammon
Construction Limited)
|
Site Agent
|
Kenneth Tai
|
9039 4723
|
-
|
|
Environmental
Officer
|
Max Poon
|
9103 6303
|
-
|
|
|
|
|
|
|
|
ET (ERM-HK)
|
ET Leader
|
Dr. Jasmine Ng
|
2271 3311
|
2723 5660
|
The construction phase of the Contract commenced on 7
June 2018. The three-month rolling
construction programme is shown in Appendix B.
As informed by the Contractor, details of the major
works carried out in this reporting month are listed below:
Land-based Works
·
Bar bending and timber formwork at Toll Control
Building and Ventilation Plant Room;
·
ER’s and the Contractor’s site offices erection at
WA18; and
·
Additional land ground investigation (GI) at
Administration Building, trial pits and laboratory testing.
The
locations of the construction activities are shown in Figure 1.3.
The Environmental Sensitive Receivers in the vicinity of the Project are
shown in Figure 1.4.
The
implementation schedule of environmental mitigation measures is presented in Appendix
C.
Figure 1.3 Locations of Major Construction Activities in the
Reporting Month
2
EM&A
Results
The EM&A programme required environmental
monitoring for air quality and environmental site inspections for air quality, water
quality and waste management. The
EM&A requirements and related findings for each component are summarized in
the following sections
2.1.1
Monitoring Requirements and Equipment
In accordance with the Updated EM&A Manual and the
Enhanced TSP Monitoring Plan, impact 1-hour TSP monitoring was conducted three
(3) times every six (6) days and impact 24-hour TSP monitoring was carried out once
every six (6) days when the highest dust impact was expected. 1-hr and 24-hr TSP monitoring frequency was
increased to three times per day every three days and daily every three days,
respectively, as excavation works for launching shaft under Contract No. HY/2012/08 Tuen Mun-Chek Lap
Kok Link – Northern Connection Sub-sea Tunnel Section commenced on 24
October 2014.
Results of air quality monitoring were adopted from
the published EM&A data of Contract
No. HY/2012/08 Tuen Mun-Chek Lap Kok Link – Northern Connection Sub-sea Tunnel
Section ().
The Action and Limit Levels of the air quality
monitoring were adopted from
the published EM&A reports of Contract No. HY/2012/08 Tuen Mun-Chek Lap Kok Link –
Northern Connection Sub-sea Tunnel Section (). The Action and
Limit Levels are provided in Appendix D.
The locations of the monitoring stations overlapped
with Contract
No. HY/2012/08 are shown in Figure
2.1
and presented in Table 2.1.
Table
2.1 Locations of Impact Air Quality Monitoring Stations and and
its Corresponding Monitoring Requirements
|
Monitoring Station
|
Monitoring Dates
|
Location
|
Description
|
Parameters
& Frequency
|
|
ASR1
|
9,
12, 15, 18, 21, 24, 27 and 30 June 2018
|
Tuen
Mun Fireboat Station
|
Office
|
TSP monitoring
Ÿ 1-hour Total Suspended Particulates (1-hour TSP, µg/m3), 3
times in every 6 days
Ÿ 24-hour Total Suspended Particulates (24-hour TSP, µg/m3),
daily for 24-hour in every 6 days
Enhanced TSP monitoring
(commenced on 24 October 2014 under
Contract No. HY/2012/08)
Ÿ 1-hour Total Suspended Particulates (1-hour TSP, µg/m3), 3
times in every 3 days
Ÿ 24-hour Total Suspended Particulates (24-hour TSP, µg/m3),
daily for 24-hour in every 3 days
|
|
ASR5
|
|
Pillar
Point Fire Station
|
Office
|
|
AQMS1
|
|
Previous
River Trade Golf
|
Bare
ground
|
|
ASR6
|
|
Butterfly
Beach Laundry
|
Office
|
|
ASR10
|
|
Butterfly
Beach Park
|
Recreational
uses
|
2.1.2 Monitoring
Methodology
High Volume Sampler
(a) The
HVS was installed in the vicinity of the air sensitive receivers. The following criteria were considered in the
installation of the HVS:
· A
horizontal platform with appropriate support to secure the sampler against gusty
wind was provided.
· The
distance between the HVS and an obstacle, such as buildings, was at least twice the height
that the obstacle protrudes above the sampler.
·
A
minimum of 2m of separation from walls, parapets and penthouses was required
for rooftop samples.
·
A
minimum of 2m separation from any supporting structure, measured horizontally
was required.
·
No
furnaces or incineration flues were nearby.
·
Airflow
around the sampler was unrestricted.
·
The
samplers were more than 20m from the drip line.
·
Any
wire fence and gate, to protect the sampler, should not cause any obstruction
during monitoring.
·
Permission must be obtained to set up the samples
and to obtain access to the monitoring stations.
·
A secured supply of electricity is needed to
operate the samplers.
·
No two samplers should be placed less than 2 m
apart.
(b)
Preparation of Filter Papers
· Filter
papers of size 8”x 10” that were clean and without pinholes were selected.
· All
filter papers were conditioned in a humidity controlled chamber for over 24-hour
and be pre-weighed before use for sampling.
· All
filter papers were prepared and analysed by ALS Technichem (HK) Pty Ltd., which
is a HOKLAS accredited laboratory and has comprehensive quality assurance and
quality control programmes.
(c)
Field Monitoring
· The
power supply was checked to ensure the HVS works properly.
· The
filter holder and the area surrounding the filter were cleaned.
· The
filter holder was removed by loosening the four bolts and a new filter, with
stamped number upward, on a supporting screen was aligned carefully.
· The
filter was properly aligned on the screen so that the gasket formed an airtight
seal on the outer edges of the filter.
· The
swing bolts were fastened to hold the filter holder down to the frame. The pressure applied was sufficient to avoid
air leakage at the edges.
· Then
the shelter lid was closed and was secured with the aluminum strip.
· The
HVS was warmed up for about 5 minutes to establish run-temperature conditions.
· A new
flow rate record sheet was set into the flow recorder.
· On
site temperature and atmospheric pressure readings were taken and the flow rate
of the HVS was checked and adjusted at around 1.1 m3/min, and
complied with the range specified in the Updated EM&A Manual (i.e. 0.6 –
1.7 m3/min).
· The
programmable digital timer was set for a sampling period of 1 hour or 24 hours,
and the starting time, weather condition and the filter number were recorded.
· The
initial elapsed time was recorded.
· At
the end of sampling, on site temperature and atmospheric pressure readings were
taken and the final flow rate of the HVS was checked and recorded.
· The
final elapsed time was recorded.
· The
sampled filter was removed carefully and folded in half-length so that only
surfaces with collected particulate matter were in contact.
· It
was then placed in a clean plastic envelop and sealed.
· All
monitoring information was recorded on a standard data sheet.
· Filters
were then sent to ALS Technichem (HK) Pty Ltd. for analysis.
(d) Maintenance
and Calibration
· The
HVS and its accessories were maintained.
Appropriate
maintenance such as routine motor brushes replacement and electrical wiring
checking were made to ensure that the equipment and necessary power supply are
in good working condition.
· All
HVS were calibrated
(five point calibration) using Calibration Kit prior to the
commencement of the baseline monitoring and thereafter at bi-monthly intervals.
2.1.3 Results
and Observations
Results of air
quality monitoring were adopted from the published EM&A data of Contract No. HY/2012/08 Tuen Mun-Chek Lap Kok Link –
Northern Connection Sub-sea Tunnel Section ().
Neither Action nor Limit Levels exceedances was
recorded by the Environmental Team of Contract No. HY/2012/08 during the reporting period. No action is thus required to be undertaken
in accordance with the Event Action Plan presented in Appendix E.
2.2
Landfill
Gas Hazard Monitoring
2.2.1 Monitoring
Requirements and Equipment
In accordance
with the Updated EM&A Manual, regular landfill gas monitoring shall be
carried out during the excavation and confined area within the landfill
zone of Pillar Point Valley (PPV) Landfill. A Safety
Officer shall be appointed to carry out regular landfill gas hazard monitoring
works during all excavations, manholes, chambers, relocation of monitoring
wells and any other confined spaces that may have been created. All measurements in excavations shall be made
with the extended monitoring tube located not more than 10mm from the exposed
ground surface to ensure that the construction work area is free of landfill
gas before any worker enters in the area.
The Action and Limit Levels of the landfill gas hazard monitoring is
provided in Appendix
D.
The location of the monitoring station is shown in Table
2.2.
Table
2.2 Location of Landfill Gas Monitoring Station
and and its Corresponding Monitoring Requirements
|
Monitoring Station
|
Monitoring Dates
|
Parameters
|
Measurements
& Frequency
|
|
Toll
Control Building
|
To
be implemented in July
|
Ÿ
Oxygen
Ÿ
Methane
Ÿ
Carbon dioxide
|
For excavations deeper
than 1m, measurements should be undertaken
Ÿ At the ground surface before excavation commences;
Ÿ Immedately before any worker enters the excavation;
Ÿ At the beginning of each working date for the entire period the
excavation remains open; and
Ÿ Periodically through the working day whilst workers are in the
excavation
For excavations between
300mm and 1m deep, measurements should be undertaken
Ÿ Directly after the excavation has been completed; and
Ÿ Periodically whilst the excavation remains open
For excavations less than
300mm deep, monitoring works may be omitted, at the discretion of the Safety
Officer or other qualified person
|
|
|
|
|
|
|
|
|
|
|
|
|
2.2.2
Results and Observations
Informed by the
Safety Officer, no landfill gas hazard monitoring was undertaken in the
reporting period in view of the construction works at toll control
building. Event Action Plan is presented
in Appendix
E.
2.3
EM&A
Site Inspection
Site inspections were carried out on a weekly basis to
monitor the implementation of proper environmental pollution control and mitigation
measures under the Contract. In the
reporting month, four (4) site inspections were carried out on 8, 15, 22 and 29
June 2018.
Key observations and recommendations during the site
inspections in this reporting period are summarized in Table 2.2.
Table 2.3 Specific Observations and
Recommendations during the Weekly Site Inspection in this Reporting Month
|
Inspection Date
|
Observations
|
Recommendations/ Remarks
|
|
8 June 2018
|
Ventilation
Plant Room
Ÿ Chemical
containers were observed not placed in drip tray.
Toll
Control Building
Ÿ Stagnant
water in the drip tray near the generator was observed not cleared.
|
Ventilation
Plant Room
Ÿ The
Contractor was reminded to place chemical containers in drip tray.
Toll
Control Building
Ÿ The
Contractor was reminded to clear stagnant water in the drip tray.
|
|
15
June 2018
|
WA18
Ÿ Stagnant
water in the drip tray and trolley in front of site office were observed not
cleared.
Ventilation
Plant Room
Ÿ Chemical
containers were observed not placed in drip tray.
Ÿ Duplicate
QPME label should be displayed on the sides of the generator for checking.
|
WA18
Ÿ The
Contractor was reminded to clear stagnant water in the drip tray and in the
trolley.
Ventilation
Plant Room
Ÿ The
Contractor was reminded to place chemical containers in drip tray.
Ÿ The
Contractor was reminded to provide QPME label on the sides of the generator.
|
|
22
June 2018
|
Toll
Control Building
Ÿ Checklist
should be provided on the wetsep.
Ÿ On-site
sorting should be implemented on site for wastes.
Administration
Building
Ÿ Chemical
labels should be displayed on the chemical containers used in wetsep
operation.
|
Toll
Control Building
Ÿ The
Contractor was reminded to provide wetsep checklist.
Ÿ The
Contractor was reminded to implement on-site waste sorting.
Administration
Building
Ÿ The
Contractor was reminded to provide chemical labels on the checmical
containers.
|
|
29
June 2018
|
Ventilation
Plant Room
Ÿ Stagnant
water in the drip tray was observed not cleared.
Toll
Control Building
Ÿ Chemical
container was observed not placed in drip tray.
|
Ventilation
Plant Room
Ÿ The
Contractor was reminded to clear stagnant water in the drip tray.
Toll
Control Building
Ÿ The
Contractor was reminded to place chemical container in drip tray.
|
The Contractor has rectified all of the observations
as identified during environmental site inspections in the reporting month.
The Contractor had submitted application form for
registration as chemical waste producer under the Contract. Sufficient numbers of receptacles were
available for general refuse collection and sorting.
Wastes generated during this reporting period included
mainly construction wastes (inert and non-inert). Reference has been made to the waste flow
table prepared by the Contractor (Appendix F). The quantities of different types of wastes
are summarized in Table 2.3.
Table 2.4 Quantities of Different Waste Generated
in the Reporting Month
|
Month/Year
|
Inert C&D Materials (a)
(m3)
|
Inert Construction Waste Re-used
(m3)
|
Non-inert Construction Waste (b)
(kg)
|
Imported
Fill (m3)
|
Recyclable Materials (c) (kg)
|
Chemical Wastes (kg)
|
|
|
|
June 2018
|
2085
|
0
|
3,750
|
0
|
0
|
|
0
|
|
|
|
Notes:
|
|
|
|
(a) Inert
construction wastes include hard rock and large broken concrete, and
materials disposed as public fill.
(b) Non-inert
construction wastes include general refuse disposed at landfill.
(c) Recyclable
materials include metals, paper, cardboard, plastics, timber and others.
|
|
|
|
|
|
|
|
|
|
|
|
The Contractor was advised to properly maintain on
site C&D materials and waste collection, sorting and recording system,
dispose of C&D materials and wastes at designated ground and maximize
reuse/ recycle of C&D materials and wastes.
The Contractor was also reminded to properly maintain the site tidiness
and dispose of the wastes accumulated on site regularly and properly.
For chemical waste
containers, the Contractor was reminded to treat properly and store temporarily
in designated chemical waste storage area on site in accordance with the Code of Practice on the Packaging, Labelling
and Storage of Chemical Wastes.
The status of
environmental licensing and permit is summarized in Table 2.4 below.
In response to the site audit findings, the
Contractors carried out all corrective actions.
A summary of the Implementation Schedule of
Environmental Mitigation Measures (EMIS) is presented in Appendix C. The
necessary mitigation measures relevant to this Contract were implemented
properly.
No exceedance of 1-hour and 24-hour TSP was recorded in
this reporting month.
Cumulative statistics are provided in Appendix G.
The Environmental Complaint Handling Procedure is provided in Figure 2.2.
There was no environmental complaint, notification of
summons or successful prosecution recorded in the reporting period.
Statistics on complaints, notifications of summons,
successful prosecutions are summarized in Appendix G.
3
Future
Key Issues
As informed by the Contractor, the major works for the
Project in July 2018 will be:
Land-based Works
·
Bar bending and timber formwork at Toll Control
Building and Ventilation Plant Room;
·
ER’s and the Contractor’s site offices erection at
WA18; and
·
Socket H-pilling at Administration Building.
Potential environmental impacts arising from the above
upcoming construction activities in the next reporting month of July 2018 are
mainly associated with dust and waste management issues.
4
Conclusions
and recommendations
This First Monthly EM&A Report presents the findings of the EM&A
activities undertaken during the period from 7 to 30 June 2018, in accordance
with the Updated EM&A Manual and the requirements of EP-354/2009/D.
Air quality (including 1-hour TSP and 24-hour TSP) was
carried out in this reporting month.
No exceedance of 1-hour and 24-hour TSP was recorded in
this reporting month.
Environmental site inspection was carried out four (4)
times in June 2018. Remedial
actions recommended for the deficiencies identified during the site audits were
properly implemented by the Contractor.
There was no environmental complaint, notification of
summons or successful prosecution recorded in the reporting period.
The ET will keep track on the construction works to
confirm compliance of environmental requirements and the proper implementation
of all necessary mitigation measures.
