Executive
Summary
1.1
Background
1.2
Scope of Report
1.3
Organization Structure
1.4
Summary of Construction Works
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
3.1
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 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 EM&A Monitoring Schedule
Appendix G Calibration Certificate of Monitoring Equipment
Appendix H Landfill Gas Monitoring Results and Graphical
Presentation
Appendix
I Monthly Summary
of Waste Flow Table
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.
This is the
Eighth Monthly EM&A report presenting the EM&A works carried out during
the period from 1 to 31 January 2019 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, timber formwork and concreting and Architectural Builder's Work and
Finishes at Toll Control Building;
·
Electrical and Mechanical Works at
Ventilation Plant Room;
·
Electrical and Mechanical Works at North
Ventilation Building;
·
Building
Structure at Administration Building;
·
Building
Structure at Maintenance Depot;
·
Socket
H-piling at Fire Services Department Building;
·
Socket
H-piling at Customs and Excise Department Building; and
·
Electrical
and Mechanical Works and Architectural Builder's Work and Finishes at Kiosk
N2.
A summary of
monitoring and audit activities conducted in the reporting period is listed
below ([1]):
24-hour TSP
Monitoring
10 sessions
1-hour TSP
Monitoring 10
sessions
Landfill Gas
Hazard
Monitoring
6 days
Joint
Environmental Site Inspection 4 sessions
Summary of
Breaches of Action/Limit Levels
Breaches of
Action and Limit Levels for Air Quality
Five (5)
Action Level and One (1) Limit Level exceedances for 1-hour TSP were recorded
by the Environmental Team of Contract No. HY/2012/08 during the
reporting period.
Breaches of
Action and Limit Levels for Landfill Gas Hazard Monitoring
No exceedance
of Action and Limit Levels was recorded for landfill gas hazard monitoring in
the 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 February 2019 include the
following:
Land-based
Works
·
Electrical
and Mechanical Works and Architectural Builder's Work and Finishes at Toll
Control Building;
·
Electrical and Mechanical Works at
Ventilation Plant Room;
·
Electrical and Mechanical Works at North
Ventilation Building;
·
Building
Structure at Administration Building;
·
Building
Structure at Maintenance Depot;
·
Excavation
at Fire Services Department Building;
·
Excavation
at Customs and Excise Department Building; and
·
Electrical
and Mechanical Works and Architectural Builder's Work and Finishes at Kiosk N2.
Future Key
Issues
Potential environmental
impacts arising from the above upcoming construction activities in the next
reporting month of February 2019 are mainly associated with dust and waste
management issues.
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.
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, timber formwork and concreting and Architectural Builder's Work and
Finishes at Toll Control Building;
·
Electrical and Mechanical Works at
Ventilation Plant Room;
·
Electrical and Mechanical Works at North
Ventilation Building;
·
Building
Structure at Administration Building;
·
Building
Structure at Maintenance Depot;
·
Socket
H-piling at Fire Services Department Building;
·
Socket
H-piling at Customs and Excise Department Building; and
·
Electrical
and Mechanical Works and Architectural Builder's Work and Finishes at Kiosk
N2.
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.
Figure 1.3 Locations of Major Construction Activities
in the Reporting Month
|
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
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 ([2]).
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 its Corresponding
Monitoring Requirements
Monitoring Station |
Monitoring Dates |
Location |
Description |
Parameters & Frequency |
ASR1 |
2, 5, 8, 11, 14, 17, 20 ,23, 26 and 29 January 2019 |
Tuen Mun Fireboat Station
|
Office |
TSP monitoring 1-hour Total Suspended Particulates (1-hour TSP, µg/m3), 3 times in every 6 days 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) 1-hour Total Suspended Particulates (1-hour TSP, µg/m3), 3 times in every 3 days 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 |
Five (5)
Action Level and one (1) Limit Level exceedances for 1-hour TSP on 8, 11, 17
and 26 January 2019 were recorded by the Environmental Team of Contract No. HY/2012/08
during the reporting period. The exceedances were considered not related to this Contract upon further
investigation and the investigation report is presented in Appendix G.
No
action is required to be undertaken in accordance with the Event Action Plan as
presented in Appendix E.
No exceedance
of Action and Limit Levels for 24-hour TSP was recorded in the reporting month.
In accordance
with the Updated EM&A Manual of the TM-CLK Link Project, landfill gas hazard monitoring should be
perform to ensure that the works area at Pillar Point Valley (PPV) Landfill is
free of landfill gas during any excavations works. A total of 6 days of
landfill gas hazard monitoring was conducted at Toll Control Building prior to
the excavation works during 3 to 9 January 2019 (Appendix F).
The landfill
gas hazard monitoring was conducted in accordance to the Updated EM&A
Manual with a Altair 5X Gas Detector. The calibration certificate for the
equipment is presented in Appendix
G.
Results for
landfill gas hazard monitoring are summarized in Table 2.2 and the
monitoring data is provided in Appendix H.
No exceedance
of Action and Limit Levels for methane, oxygen and carbon dioxide was recorded
in the reporting month.
Table 2.2
Summary of Landfill Gas Hazard Monitoring Results in the Reporting Period
|
Average (%) |
Range (%) |
Action / Limit Level (%) |
Methane |
0 |
0 |
10 / 20 |
Oxygen |
20.8 |
20.7-20.8 |
19 / 18 |
Carbon Dioxide |
0.08 |
0.07-0.08 |
0.5 / 1.5 |
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 4, 11, 18 and 25 January 2019.
Key
observations and recommendations during the site inspections in this reporting
period are summarized in Table 2.3.
Table
2.3 Specific Observations and Recommendations
during the Weekly Site Inspection in this Reporting Month
Inspection Date |
Observations |
Recommendations/ Remarks |
4 January 2019 2019 |
Fire Services Department Building & Customs and Excise Department Building Chemical containers should be placed in drip tray. Unnecessary pipes were observed connected to the Aqua Sed. |
Fire Services Department Building & Customs and Excise Department Building The Contractor was reminded to place chemical containers in drip tray. The Contractor was reminded to remove unnecessary pipes connected to the Aqua Sed. |
11 January 2019 |
North Ventilation Building Accumulated waste was observed in the waste bin. |
North Ventilation Building The Contractor was reminded to clear accumulated refuse in waste bin.
|
18 January 2019 |
Fire Services Department Building Surface runoff was observed during piling.
North Ventilation Building Oil leakage was observed under machinery. |
Fire Services Department Building The Contractor was reminded to prevent surface runoff during piling.
North Ventilation Building The Contractor was reminded to provide drip tray under machinery. |
25 January 2019 |
Custom and Excise Department Building Accumulated rubbish in the waste skip should be cleared regularly. |
Custom and
Excise Department Building The Contractor was reminded to clear accumulated rubbish in the waste skip.
|
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 I). The quantities of different types of
wastes are summarized in Table 2.4.
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) |
|||
|
|||||||||
January 2019 |
1,939 |
0 |
74,680 |
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 2.5 below.
Table
2.5 Summary of Environmental
Licensing and Permit Status
License/ Permit |
License or Permit No. |
Date of Issue |
Date of Expiry |
License/ Permit Holder |
Remarks |
Environmental Permit |
EP-354/2009/D |
13 March 2015 |
N/A |
HyD |
Tuen Mun- Chek Lap Kok Link |
APCO Construction Dust Notification |
433493 |
14 May 2018 |
N/A |
GCL |
For Tuen Mun working area |
Construction Waste Billing Account |
7030836 |
15 May 2018 |
N/A |
GCL |
N/A |
Chemical Waste Producer Registration |
5213-422-G2827-01 |
13 June 2018 |
N/A |
GCL |
N/A |
WPCO Licence for Buildings at C2 area |
WT00031783-2018 |
22 October 2018 |
31 October 2023 |
GCL |
Sampling Frequency: Bimonthly |
WPCO Licence for Buildings at C3 area |
WT00032062-2018 |
30 October 2018 |
31 October 2023 |
GCL |
Sampling Frequency: Quarterly |
Construction Noise Permit |
GW-RW0560-18 |
28 December 2018 |
18 June 2019 |
GCL |
For Toll Control Building, Administration Building, Maintenance Depot and WA18 |
Construction Noise Permit |
GW-RW0037-19 |
28 January 2019 |
23 July 2019 |
GCL |
For Toll Control Building, Administration Building, Maintenance Depot and WA18 |
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.
The landscape
and visual (L&V) mitigation measures were also monitored on weekly basis in
the reporting period. The monitoring status is summarized in Appendix C.
Five (5)
Action Level and one (1) Limit Level exceedances for 1-hour TSP were recorded
by the Environmental Team of Contract No. HY/2012/08 during the
reporting period. The exceedances
were considered not related to this Contract upon further investigation and the
investigation report is presented in Appendix J. No action is required to be undertaken
in accordance with the Event Action Plan as presented in Appendix E.
No exceedance
of 24-hour TSP was recorded in this reporting month.
Cumulative
statistics are provided in Appendix
J.
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 J.
As informed by
the Contractor, the major works for the Project in February 2019 will be:
·
Electrical and Mechanical Works
and Architectural Builder's Work and Finishes at Toll Control Building;
·
Electrical and Mechanical Works at Ventilation Plant Room;
·
Electrical and Mechanical Works at North Ventilation Building;
·
Building Structure at
Administration Building;
·
Building Structure at
Maintenance Depot;
·
Excavation at Fire Services Department
Building;
·
Excavation at Customs and Excise
Department Building; and
·
Electrical and Mechanical Works
and Architectural Builder's Work and Finishes at Kiosk N2.
Potential environmental impacts arising from the
above upcoming construction activities in the next reporting month of
February2019 are mainly associated with dust and waste management issues.
This Eighth Monthly
EM&A Report presents the findings of the EM&A activities undertaken
during the period from 1 to 31 January 2019, 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.
Five (5) Action Level and one (1) Limit Level exceedances
for 1-hour TSP were recorded by the Environmental Team of Contract No. HY/2012/08
during the reporting period. The exceedances were considered not related to this Contract upon
further investigation and the investigation report is presented in Appendix G.
No
action is required to be undertaken in accordance with the Event Action Plan as
presented in Appendix E.
No exceedance
of Action and Limit Levels for 24-hour TSP was recorded in the reporting month.
No exceedance
of Action and Limit Levels was recorded for landfill gas hazard monitoring in
the reporting month.
Environmental site inspection was carried out four
(4) times in January 2019. 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.
([1])
ET justification on the Contract Specific Environmental Monitoring and Audit
activities under this Project was submitted to ENPO on 11 September 2018
([2])
Published EM&A data for impact air quality monitoring by Contract No.
HY/2012/08 are available at: http://www.hzmbenpo.com/