table of Contents
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 Water
Quality Monitoring
2.3 Dolphin
Monitoring
2.4 EM&A
Site Inspection
2.5 Waste
Management Status
2.6 Environmental
Licenses and Permits
2.7 Implementation
Status of Environmental Mitigation Measures
2.8 Summary
of Exceedances of the Environmental Quality Performance Limit
2.9 Summary
of Complaints, Notification of Summons and Successful Prosecutions
3 Future
Key Issues
3.1 Construction
Activities for the Coming Quarter
3.2 Key
Issues for the Coming Quarter
3.3 Monitoring
Schedule for the Coming Quarter
4 Conclusions
Appendix A Project Organization
Appendix B Construction Programme
Appendix C Environmental Mitigation And
Enhancement Measure Implementation Schedules (EMIS)
Appendix D Action And Limit Levels
Appendix F Air Quality Monitoring
Results
Appendix G Water Quality Monitoring
Results
Appendix H Impact Dolphin Monitoring
Appendix I Event And Action Plan
Appendix J Cumulative Statistics On
Exceedance And Complaint
Executive
Summary
Under Contract No.
HY/2012/08, Dragages – Bouygues Joint Venture (DBJV) is commissioned by the
Highways Department (HyD) to undertake the design and construction of the
Northern Connection Sub-sea Tunnel Section of the Tuen Mun – Chek Lap Kok Link
Project (TM-CLK Link Project) while AECOM
Asia Company Limited was appointed by HyD as the Supervising Officer. 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 Contract commenced
on 1 November 2013 and will tentatively be completed by the end of 2019. The
impact monitoring of the EM&A programme, including air quality, water
quality, marine ecological monitoring and environmental site inspections, were
commenced on 1 November 2013.
This is the Twenty-first Quarterly
EM&A report presenting the EM&A works carried out during the period
from 1 December 2018 to 28 February 2019 for the Contract No. HY/2012/08 Northern
Connection Sub-sea Tunnel Section (the “Contract”) in accordance with the Updated EM&A
Manual of the TM-CLK
Link Project. As informed
by the Contractor, the major activities in the reporting quarter included:
Land-based Works
· Construction of Cross Passage Tympanum –
TBM tunnel;
· Cross Passage Lining Installation – TBM
Tunnel;
· Cross Passage Construction by Pipe
Jacking – TBM Tunnel;
· Corbel & OVHD Construction – TBM
Tunnel;
· Parapet wall and fireboard Installation
– TBM Tunnel;
· RC structure – Portion N-A & S-A;
· Bulk Excavation – Portion N-A; and
· D-wall Construction – Portion S-A
Marine-based Works
· Seawall Modification Works – Portion S-B
A summary of monitoring and audit activities
conducted in the reporting period is listed below:
24-hour TSP Monitoring 29
sessions
1-hour TSP Monitoring 29
sessions
Water Quality Monitoring 13
sessions
Impact Dolphin Monitoring 6
sessions
Joint Environmental Site Inspection 13
sessions
Implementation of Marine Mammal
Exclusion Zone
Daily marine mammal exclusion zone was
in effect during the period of silt curtain installation in open waters under
this Contract. No sighting of the Indo-Pacific humpback dolphin Sousa
chinensis (i.e. Chinese White Dolphin) was recorded in the reporting period
during the exclusion zone monitoring.
Summary of Breaches of Action/Limit
Levels
Breaches of Action and Limit Levels for
Air Quality
Eight (8) Action Level exceedance and
One (1) Limit Level exceedance of 1-hour TSP was recorded. One (1) Action
Level exceedance of 24-hour TSP was recorded. Investigation reports are
provided in Appendix J.
Breaches of Action and Limit Levels for
Water Quality
No exceedances were recorded in the
water quality monitoring of this reporting month.
Dolphin Monitoring
Whilst one (1) Limit Level exceedance was
observed for the quarterly dolphin monitoring data between December 2018 and February
2019, no unacceptable impact from the construction activities of the TM-CLKL Northern Connection Sub-sea
Tunnel Section
on Chinese White Dolphins was noticeable from general observations during the dolphin monitoring in this
reporting quarter.
Environmental Complaints, Non-compliance
& Summons
No non-compliance with EIA recommendations, EP conditions and other
requirements associated with the construction of this Contract was recorded in
this reporting period.
No environmental complaint was received
in this reporting period.
No environmental summons was received in
this reporting period.
Reporting Change
There was no reporting change required
in the reporting period.
Upcoming Works for the Next Reporting
Period
Works to be undertaken in the coming
quarterly period include the following:
Land-based
Works
· Construction of Cross Passage Tympanum –
TBM tunnel;
· Cross Passage Lining Installation – TBM
Tunnel;
· Cross Passage Construction by Pipe
Jacking – TBM Tunnel;
· Corbel & OVHD Construction – TBM
Tunnel;
· RC structure – Portion N-A & S-A; and
· D-wall Construction – Portion N-A
Future Key Issues
Potential environmental impacts arising
from the above upcoming construction activities in the coming quarterly period
are expected to be mainly associated with dust, marine ecology 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 (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.
Under Contract No.
HY/2012/08, Dragages – Bouygues Joint Venture (DBJV) is commissioned by the
Highways Department (HyD) to undertake the design and construction of the
Northern Connection Sub-sea Tunnel Section of TM-CLKL while AECOM Asia Company Limited was appointed
by HyD as the Supervising Officer. 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).
Layout of the Contract
components is presented in Figure
1.1.
The
construction phase of the Contract commenced on 1 November 2013 and will
tentatively be completed by the end of 2019. The impact monitoring phase of
the EM&A programme, including air quality, water quality, marine ecological
monitoring and environmental site inspections, were commenced on 1 November
2013.
This
is the Twenty-first Quarterly EM&A Report under the Contract No.
HY/2012/08 Tuen Mun – Chek Lap Kok Link – Northern Connection Sub-sea Tunnel
Section. This report presents a summary of the environmental
monitoring and audit works from 1 December 2018 to 28 February 2019.
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
|
|
Highways
Department
|
Engr
22/HZMB
|
Chow
Man Lung, Andrew
|
2762 4110
|
2762 4110
|
|
SOR
(AECOM
Asia Company Limited)
|
Chief
Resident Engineer
|
Roger Man
Andrew
Westmoreland
|
2293 6388
2293 6360
|
2293 6300
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
(Dragages –
Bouygues Joint Venture)
|
Deputy
Environmental Manager
|
Bryan
Lee
|
2293 7323
|
2293 7499
|
|
|
Senior
Environmental Officer
|
Ashley
Au
|
52950766
|
|
|
|
24-hour
hotline
|
|
2293 7330
|
|
|
ET
(ERM-HK)
|
ET
Leader
|
Jasmine
Ng
|
2271
3311
|
2723
5660
|
The
construction phase of this Contract was commenced on 1 November 2013. The
construction programme is shown in Appendix
B.
As
per DBJV’s information, details of major construction works carried out in this
reporting period are summarized in Table 1.2.
The general layout plan of the site
showing the detailed works areas is shown in Figure 1.2. The Environmental Sensitive Receivers in
the vicinity of the Project are shown in Figure 1.3.
The implementation schedule of
environmental mitigation measures is presented in Appendix C.
Table 1.2 Summary of Construction
Activities Undertaken during the Reporting Period
|
Construction Activities Undertaken
|
|
Land-based
Works
|
|
·
Construction of
Cross Passage Tympanum – TBM tunnel;
·
Cross Passage
Lining Installation – TBM Tunnel;
·
Cross Passage
Construction by Pipe Jacking – TBM Tunnel;
·
Corbel & OVHD
Construction – TBM Tunnel;
·
Parapet wall and
fireboard Installation – TBM Tunnel;
·
RC structure –
Portion N-A & S-A;
·
Bulk Excavation –
Portion N-A; and
·
D-wall
Construction – Portion S-A
Marine-based Works
·
Seawall
Modification Works – Portion S-B
|
Figure 1.2 Locations of Construction
Activities – December 2018 to February 2019
2
EM&A Results
The EM&A programme required
environmental monitoring for air quality, water quality and marine ecology as
well as environmental site inspections for air quality, noise, water quality,
waste management, marine ecology and landscape and visual impacts. The
EM&A requirements and related findings for each component are summarized in
the following sections
As per the requirements under Condition
2.4 of EP-354/2009/D, the Enhanced TSP Monitoring Plan has been
prepared under Contract No. HY/2012/08. Details of the monitoring plan
are presented in the Enhanced TSP Monitoring Plan ().
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 in every six (6) days and
impact 24-hour TSP monitoring was carried out once in 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 commenced on 24
October 2014.
High volume samplers (HVSs) were used to
carry out the 1-hour and 24-hour TSP monitoring in the reporting quarter at the
five (5) air quality monitoring stations in accordance with the requirements
stipulated in the Updated EM&A Manual (Figure 2.1;
Table 2.1). Wind anemometer was installed at the rooftop of ASR5 for
logging wind speed and wind direction. Details of the equipment deployed are provided
in Table 2.2.
Table 2.1 Locations of Impact Air Quality
Monitoring Stations and Monitoring Dates in this Reporting Period
|
Monitoring Station
|
Monitoring Dates
|
Location
|
Description
|
Parameters & Frequency
|
|
ASR1
|
3,
6, 9, 12, 15, 18, 21, 24, 27 and 30 December 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)
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
|
2,
5, 8, 11, 14, 17, 20, 23, 26 and 29 January 2019
|
Pillar
Point Fire Station
|
Office
|
|
AQMS1
|
1,
4, 10, 13, 16, 19, 22, 25 and 28 February 2019
|
Previous
River Trade Golf
|
Bare
ground
|
|
ASR6
|
|
Butterfly
Beach Laundry
|
Office
|
|
ASR10
|
|
Butterfly
Beach Park
|
Recreational
uses
|
Table 2.2 Air Quality Monitoring Equipment
|
Equipment
|
Brand and Model
|
|
High Volume Sampler
(1-hour TSP and 24-hour TSP)
|
Tisch Environmental Mass Flow Controlled
Total Suspended Particulate (TSP) High Volume Sampler (Model No. TE-5170)
|
|
Wind Meter
|
Davis (Model: Vantage Pro 2 (S/N: AS160104014)
|
|
Wind Anemometer for calibration
|
Lutron (Model No. AM-4201)
|
2.1.2
Action & Limit
Levels
The Action and Limit Levels of the air
quality monitoring is provided in Appendix D. The Event and Action plan is presented in Appendix H.
2.1.3
Monitoring Schedule
for the Reporting Quarter
The schedules for air quality monitoring
in the reporting quarter are provided in Appendix E.
2.1.4
Results and
Observations
Impact air quality monitoring was
conducted at all designated monitoring stations in the reporting period under
favourable weather conditions. The major dust sources in the reporting period
include construction activities under the Contract as well as nearby traffic
emissions.
The monitoring results for 1-hour TSP
and 24-hour TSP are summarized in Tables 2.3 and 2.4,
respectively. Monitoring results are presented graphically in Appendix F and
detailed impact air quality monitoring data were reported in the Sixty- second to Sixty-fourth Monthly EM&A Report.
Table 2.3 Summary of 1-hour TSP Monitoring
Results in this Reporting Period
|
Month/Year
|
Station
|
Average (µg/m3)
|
Range (µg/m3)
|
Action Level (µg/m3)
|
Limit Level (µg/m3)
|
|
December
2018 to February 2019
|
ASR
1
|
167
|
63 - 519
|
331
|
500
|
|
ASR
5
|
194
|
55 - 399
|
340
|
500
|
|
AQMS1
|
115
|
47 - 221
|
335
|
500
|
|
ASR6
|
139
|
58 - 478
|
338
|
500
|
|
ASR10
|
93
|
25 - 223
|
337
|
500
|
Table 2.4 Summary of 24-hour TSP
Monitoring Results in this Reporting Period
|
Month/Year
|
Station
|
Average (µg/m3)
|
Range (µg/m3)
|
Action Level (µg/m3)
|
Limit Level (µg/m3)
|
|
December
2018 to February 2019
|
ASR 1
|
108
|
59 - 237
|
213
|
260
|
|
ASR 5
|
120
|
53 - 196
|
238
|
260
|
|
AQMS1
|
72
|
35 - 127
|
213
|
260
|
|
ASR6
|
97
|
48 - 191
|
238
|
260
|
|
ASR10
|
74
|
35 - 137
|
214
|
260
|
Eight (8) Action Level exceedance and
One (1) Limit Level exceedance of 1-hour TSP was recorded. One (1) Action
Level exceedance of 24-hour TSP was recorded. Investigation reports are
provided in Appendix J.
Summary of Exceedances for Air Quality Impact Monitoring in this Reporting
Quarter is detailed in Table 2.15.
2.2
Water Quality Monitoring
Seawall Modification Works at Portion
S-B has commenced on 7 January 2019 and temporarily suspended after January
2019.
Impact marine water quality monitoring
was resumed on 2 January 2019 and temporarily suspended after January 2019. Water
Quality Monitoring will be resumed prior to the commencement of stage 2 of sloping
seawall construction in June 2019.
2.2.1
Monitoring
Requirements & Equipment
In accordance with the approved Environmental Review Report
dated 21 March 2018 for the Change in Design of Vertical Seawall to Sloping
Seawall on Southern Landfall,
Updated Impact water
quality monitoring programme and water quality monitoring stations IS17, SR7 and
IS(Mf)11 specified under the EM&A Manual for HZMB HKBCF project will be
adopted. (Figure 2.2; Table 2.5).
Results of water quality monitoring were
adopted from the published EM&A data of Contract No. HY/2012/07 Tuen
Mun-Chek Lap Kok Link – Southern Connection Viaduct Section .
The Action and Limit Levels of the water
quality monitoring were adopted from the EM&A Manual for HZMB HKBCF project.
The Action and Limit Levels are provided in Appendix D.
Table 2.5 Locations of Water Quality
Monitoring Stations and the Corresponding Monitoring Requirements
|
Station ID
|
Type
|
Coordinates
|
*Parameters, unit
|
Depth
|
Frequency
|
|
|
|
Easting
|
Northing
|
|
|
|
|
IS(Mf)11
|
Impact Station (Close to HKBCF construction site) 8
|
813562
|
820716
|
Ÿ Temperature(°C)
Ÿ pH(pH
unit)
Ÿ Turbidity
(NTU)
Ÿ Water
depth (m)
Ÿ Salinity
(ppt)
Ÿ DO
(mg/L and % of
saturation)
·
SS
(mg/L)
|
3
water depths: 1m
below
sea surface,
mid-depth
and 1m
above
sea bed. If the water depth is less than 3m, mid-depth sampling only. If
water depth less than 6m, mid-depth may be omitted.
|
Impact monitoring: 3 days per week, at mid-flood and
mid-ebb tides during the construction period of the Contract.
|
|
IS17
|
Impact
Station (Close to HKBCF construction site)
|
814539
|
820391
|
|
SR7
|
Sensitive
receivers (Tai Mo Do)
|
814293
|
821431
|
|
*Notes:
In
addition to the parameters presented monitoring location/position, time,
water depth, sampling depth, tidal stages, weather conditions and any special
phenomena or works underway nearby were also recorded.
|
Table 2.6 summarizes the equipment used in the
impact water quality monitoring programme.
Table 2.6 Water Quality Monitoring
Equipment
|
Equipment
|
Model
|
|
Multi-Parameters
|
YSI
ProDss 17E100747
|
|
Multi-Parameters
|
YSI
ProDss 16H104234
|
|
Multi-Parameters
Multi-Parameters
|
YSI
ProDss 17H105557
YSI
ProDss 16H104233
|
|
Positioning Equipment
|
Furuno
GP-170
|
|
Water
Depth Detector
|
Lowrance
Mark 5x / Garmin Striker 4
|
The Action and Limit levels of water
quality impact monitoring are shown in Appendix D.
The Event and Action plan is presented in Appendix I.
2.2.3
Monitoring Schedule
for the Reporting Period
The schedules for water quality
monitoring in the reporting quarter are provided in Appendix E.
2.2.4
Results and
Observations
Impact water quality monitoring was
conducted at all designated monitoring stations in the reporting quarter.
Results and graphical presentations of impact water quality monitoring are
presented in Appendix G.
Detailed water quality monitoring data were reported in the Sixty-third
Monthly EM&A Report.
2.3.1
Monitoring
Requirements
Impact dolphin monitoring is required to
be conducted by a qualified dolphin specialist team to evaluate whether there
have been any effects on the dolphins. In order to fulfil the EM&A
requirements and make good use of available resources, the on-going impact line
transect dolphin monitoring data collected by HyD’s Contract No. HY/2011/03
Hong Kong-Zhuhai-Macao Bridge. Hong Kong Link Road - Section between Scenic
Hill and Hong Kong Boundary Crossing Facilities on the monthly basis is
adopted to avoid duplicates of survey effort.
2.3.2
Monitoring Equipment
Table 2.7 summarizes the equipment used for the
impact dolphin monitoring.
Table 2.7 Dolphin Monitoring Equipment
|
Equipment
|
Model
|
|
Global
Positioning System (GPS)
Camera
Laser
Binoculars
Marine
Binocular
Vessel
for Monitoring
|
Garmin
18X-PC
Geo
One Phottix
Nikon
D90 300m 2.8D fixed focus
Nikon
D90 20-300m zoom lens
Infinitor
LRF 1000
Bushell
7 x 50 marine binocular with compass and reticules
65 foot single engine motor vessel with
viewing platform 4.5m above water level
|
2.3.3
Monitoring
Parameter, Frequencies & Duration
Dolphin monitoring should cover all
transect lines in Northeast Lantau (NEL) and the Northwest Lantau (NWL) survey
areas twice per month throughout the entire construction period. The
monitoring data should be compatible with, and should be made available for,
long-term studies of small cetacean ecology in Hong Kong. In order to provide
a suitable long-term dataset for comparison, identical methodology and line
transects employed in baseline dolphin monitoring was followed in the impact
dolphin monitoring.
2.3.4
Monitoring Location
The impact dolphin monitoring was
carried out in the NEL and NWL along the line transect as depicted in Figure 2.3. The
co-ordinates of all transect lines are shown in Table 2.8 below.
Table 2.8 Impact Dolphin Monitoring Line
Transect Co-ordinates
|
Line
No.
|
Easting
|
Northing
|
Line
No.
|
Easting
|
Northing
|
|
1
|
Start
Point
|
804671
|
815456
|
13
|
Start
Point
|
816506
|
819480
|
|
1
|
End
Point
|
804671
|
831404
|
13
|
End
Point
|
816506
|
824859
|
|
2
|
Start
Point
|
805476
|
820800*
|
14
|
Start
Point
|
817537
|
820220
|
|
2
|
End
Point
|
805476
|
826654
|
14
|
End
Point
|
817537
|
824613
|
|
3
|
Start
Point
|
806464
|
821150*
|
15
|
Start
Point
|
818568
|
820735
|
|
3
|
End
Point
|
806464
|
822911
|
15
|
End
Point
|
818568
|
824433
|
|
4
|
Start
Point
|
807518
|
821500*
|
16
|
Start
Point
|
819532
|
821420
|
|
4
|
End
Point
|
807518
|
829230
|
16
|
End
Point
|
819532
|
824209
|
|
5
|
Start
Point
|
808504
|
821850*
|
17
|
Start
Point
|
820451
|
822125
|
|
5
|
End
Point
|
808504
|
828602
|
17
|
End
Point
|
820451
|
823671
|
|
6
|
Start
Point
|
809490
|
822150*
|
18
|
Start
Point
|
821504
|
822371
|
|
6
|
End
Point
|
809490
|
825352
|
18
|
End
Point
|
821504
|
823761
|
|
7
|
Start
Point
|
810499
|
822000*
|
19
|
Start
Point
|
822513
|
823268
|
|
7
|
End
Point
|
810499
|
824613
|
19
|
End
Point
|
822513
|
824321
|
|
8
|
Start
Point
|
811508
|
821123
|
20
|
Start
Point
|
823477
|
823402
|
|
8
|
End
Point
|
811508
|
824254
|
20
|
End
Point
|
823477
|
824613
|
|
9
|
Start
Point
|
812516
|
821303
|
21
|
Start
Point
|
805476
|
827081
|
|
9
|
End
Point
|
812516
|
824254
|
21
|
End
Point
|
805476
|
830562
|
|
10
|
Start
Point
|
813525
|
821176
|
22
|
Start
Point
|
806464
|
824033
|
|
10
|
End
Point
|
813525
|
824657
|
22
|
End
Point
|
806464
|
829598
|
|
11
|
Start
Point
|
814556
|
818853
|
23
|
Start
Point
|
814559
|
821739
|
|
11
|
End
Point
|
814556
|
820992
|
23
|
End
Point
|
814559
|
824768
|
|
12
|
Start
Point
|
815542
|
818807
|
24*
|
Start Point
|
805476*
|
815900*
|
|
12
|
End
Point
|
815542
|
824882
|
24*
|
End Point
|
805476*
|
819100*
|
Remarks: The
coordinates of several starting and ending points have been revised since
August 2017 due to the presence of a work zone to the north of the airport
platform with intense construction activities in association with the
construction of the third runway expansion for the Hong Kong International
Airport. Co-ordinates in red and marked with
asterisk are revised co-ordinates of transect line.
2.3.5
Action
& Limit Levels
The Action and Limit levels of dolphin
impact monitoring are shown in Appendix D. The Event and Action plan is presented in Appendix I.
2.3.6
Monitoring Schedule for
the Reporting Period
The dolphin monitoring schedules for the
reporting period are shown in Appendix E.
2.3.7
Results &
Observations
A total of 801.74 km of survey effort
was conducted, with 94.7% of the total survey effort being conducted under
favourable weather conditions (ie Beaufort Sea State 3 or below with good
visibility) in this reporting quarter. Amongst the two areas, 302.10 km and 499.64
km of survey effort were conducted from NEL and NWL survey areas,
respectively. The total survey effort conducted on primary and secondary lines
were 579.99 km and 221.75 km, respectively. The survey efforts are summarized
in Appendix H.
A total of 12 groups of 38 Chinese White
Dolphins sightings
were recorded during the six sets
of surveys in this reporting
quarter. Ten
of the twelve dolphin sightings were made during on-effort search, and eight of
the ten on-effort dolphin sightings were made on primary lines. During this reporting quarter,
all dolphin groups were sighted in NWL, while no dolphin was sighted in NEL.
Encounter rates of Chinese White
Dolphins are deduced from the survey effort and on-effort sighting data made
under favourable conditions (Beaufort 3 or below with good visibility) in the
reporting quarter with the results and comparison with baseline results present
in Tables 2.9 and 2.10.
Table 2.9 Individual Survey Event
Encounter Rates
|
|
Encounter rate (STG) (no.
of on-effort dolphin sightings per 100 km of survey effort)
|
Encounter rate (ANI) (no.
of dolphins from all on-effort sightings per 100 km of survey effort)
|
|
Primary Lines Only
|
Primary Lines Only
|
|
NEL
|
Set 1
(3 & 5 Dec 2018)
|
0.00
|
0.00
|
|
Set 2
(10 & 12 Dec 2018)
|
0.00
|
0.00
|
|
Set 3
(2 & 3 Jan
2019)
|
0.00
|
0.00
|
|
Set 4
(7 & 14 Jan 2019)
|
0.00
|
0.00
|
|
Set 5
(1 & 14 Feb
2019)
|
0.00
|
0.00
|
|
Set 6
(20, 25 & 26 Feb 2019)
|
0.00
|
0.00
|
|
NWL
|
Set 1
(3 & 5 Dec 2018)
|
3.95
|
11.86
|
|
Set 2
(10 & 12 Dec 2018)
|
0.00
|
0.00
|
|
Set 3
(2 & 3 Jan
2019)
|
3.32
|
14.94
|
|
Set 4
(7 & 14 Jan 2019)
|
0.00
|
0.00
|
|
Set 5
(1 & 14 Feb
2019)
|
3.86
|
7.72
|
|
Set 6
(20, 25 & 26 Feb 2019)
|
3.29
|
13.16
|
Note: Dolphin Encounter Rates are deduced from the Two Sets of Surveys
(Two/Three Surveys in Each Set) in the reporting quarter in Northeast (NEL) and
Northwest Lantau (NWL)
Table 2.10 Quarterly Average Encounter Rates
|
|
Encounter rate (STG)
(no. of on-effort dolphin sightings per
100 km of survey effort)
|
Encounter rate (ANI) (no. of
dolphins from all on-effort sightings per 100 km of survey effort)
|
|
December 2018
– February 2019
|
September – November 2011
|
December 2018 – February 2019
|
September – November 2011
|
|
Northeast Lantau
|
0.0
|
6.00
± 5.05
|
0.0
|
22.19
± 26.81
|
|
Northwest Lantau
|
2.40
± 1.88
|
9.85
± 5.85
|
7.95
± 6.60
|
44.66
± 29.85
|
Note: Encounter
rates deduced from the baseline monitoring period have been recalculated based
only on survey effort and on-effort sighting data made along the primary
transect lines under favourable conditions.
Group size of Chinese
White Dolphins ranged from 1 – 7 individuals per group in North Lantau region
during December 2018 to February 2019. The average dolphin group sizes from
these three months were compared with the ones deduced from the baseline period
in September to November 2011, as shown in Table 2.11.
Table 2.11 Average Dolphin Group Size
|
|
Average Dolphin Group Size
|
|
December 2018 – February 2019
|
September – November
2011
|
|
Overall
|
3.17
± 1.80 (n = 12)
|
3.72
± 3.13 (n = 66)
|
|
Northeast Lantau
|
---
|
3.18 ± 2.16 (n = 17)
|
|
Northwest Lantau
|
3.17
± 1.80 (n = 12)
|
3.92
± 3.40 (n = 49)
|
Whilst one limit level exceedance was observed
for the quarterly dolphin monitoring data between December 2018 and February 2019, no unacceptable impact from the construction
activities of this Contract was recorded from the general observations.
Although the dolphins infrequently occurred
along the alignment of TM-CLKL Northern Connection Sub-Sea Tunnel Section in
the past and during the baseline monitoring period, it is apparent that dolphin
usage has been significantly reduced in NEL.
It is critical to monitor the dolphin
usage in North Lantau region in the upcoming quarters to determine whether the
dolphins are continuously affected by the various construction activities in
relation to the HZMB-related works, and whether suitable mitigation measure can
be applied to revert the situation.
2.3.8
Implementation of
Marine Mammal Exclusion Zone
Daily marine mammal exclusion zone was
in effect during the period of silt curtain installation in open waters under
this Contract. No sighting of the Indo-Pacific humpback dolphin Sousa
chinensis (i.e. Chinese White Dolphin) was recorded in the reporting period
during the exclusion zone monitoring.
Site inspections were carried out on a
weekly basis to monitor the implementation of proper environmental pollution
control and mitigation measures under the Contract. Thirteen (13) site
inspections were carried out in the reporting quarter on 5, 12, 19 and 27
December 2018; 2, 9, 16, 23 and 30 January 2019; 8, 13, 20 and 28 February 2019.
Key observations during the site
inspections in this reporting period are summarized in Table 2.12.
Table 2.12 Specific Observations and
Recommendations during the Weekly Site Inspection in this Reporting Period
|
Inspection Date
|
Environmental Observations
|
Recommendations/ Remarks
|
|
5
December 2018
|
Works Area – Portion N-C
Ÿ
Chemical label
should be provided for oil drums.
Works Area – Portion N-A
Ÿ
Accumulated waste
in the waste skip should be removed.
Ÿ
Drip tray and
chemical label should be provided for the chemical containers.
Works Area – Portion S-B
Ÿ
Rubbish in the
drainage channel should be cleared.
|
Works Area – Portion N-C
Ÿ
The Contractor was
reminded to provide chemical label for the oil drums.
Works Area – Portion N-A
Ÿ
The Contractor was
reminded to remove accumulated waste in the waste skip.
Ÿ
The Contractor was
reminded to provide drip tray and chemical label for the chemical containers.
Works Area – Portion S-B
Ÿ
The Contractor was
reminded to clear the rubbish in the drainage channel.
|
|
12 December 2018
|
Works Area – Portion S-A
Ÿ
Drip tray should
be provided for the chemical containers.
|
Works Area – Portion S-A
Ÿ
The Contractor was
reminded to provide drip tray for the chemical containers.
|
|
19
December 2018
|
Works Area – Portion S-B
Ÿ
Drip tray shoould
be provided for the chemical containers.
Works Area – Portion N-C
Ÿ
Water discharge
should be diverted to the drainage system.
Works Area – Portion N-A
Ÿ
Drip try should be
provided for the chemical containers.
|
Works Area – Portion S-B
Ÿ
The Contractor was
reminded to provide drip tray for the chemical containers.
Works Area – Portion N-C
Ÿ
The Contractor was
reminded to divert the water discharge to the drainage system.
Works Area – Portion N-A
Ÿ
The Contractor was
reminded to provide drip tray for the chemical containers.
|
|
27 December 2018
|
No Environmental Observation was
recorded during the site audit.
Reminder from the SOR
Works Area - Portion N-A
1. Stagnant water in the drip tray
should be removed.
Works Area - Portion S-A
Ÿ
2. Stagnant water
should be removed.
|
No Environmental Observation was
recorded during the site audit.
Reminder from the SOR
Works Area - Portion N-A
1. The Contractor was reminded to
remove the stagnant water in the drip tray.
Works Area - Portion S-A
Ÿ
2. The Contractor
was reminded to remove the stagnant water.
|
|
2
January 2019
|
Works Area – Portion S-C
Ÿ
The cement bags
stock should be covered to prevent dust.
Ÿ
Water spraying
should be applied to prevent dust when carrying breaking works.
|
Works Area – Portion S-C
Ÿ
The Contractor was
reminded to cover the cement bags stock to prevent dust.
Ÿ
The Contractor was
reminded to apply water spraying to prevent dust when carrying breaking
works.
|
|
9 January 2019
|
Works Area – Portion N-C
Ÿ
The cement bags
stock should be covered to prevent dust.
Works Area - Portion N-A
Ÿ
Chemical label and
drip tray should be provided for the chemical drums.
Works Area - Portion S-B
Ÿ
Housekeeping
should be maintained.
|
Works Area – Portion N-C
Ÿ
The Contractor was
reminded to cover the cement bags stock to prevent dust.
Works Area - Portion N-A
Ÿ
The Contractor was
reminded to provide chemical label and drip tray for the chemical drums.
Works Area - Portion S-B
Ÿ
The Contractor was
reminded to maintain the housekeeping.
|
|
16
January 2019
|
Works Area – Portion N-C
Ÿ
Chemical label and
drip tray should be provided for the chemical drums.
Works Area – Portion S-A
Ÿ
Water spraying
should be applied during rock breaking works.
Reminder from the SOR
Works Area – Portion N-C
Ÿ
Stagnant water
should be removed for mosquito control.
|
Works Area – Portion N-C
Ÿ
The Contractor was
reminded to provide chemical label and drip tray for the chemical drums.
Works Area – Portion S-A
Ÿ
The Contractor was
reminded to apply water spraying during rock breaking works.
Reminder from the SOR
Works Area – Portion N-C
Ÿ
The Contractor was
reminded to remove the stagnant water for mosquito control.
|
|
23 January 2019
|
Works Area – Portion N-A
Ÿ
Chemical label and
drip tray should be provided for the chemical drums.
Works Area - Portion S-A
Ÿ
Chemical label and
drip tray should be provided for the chemical drums.
|
Works Area – Portion N-A
Ÿ
The Contractor was
reminded to provide chemical label and drip tray for the chemical drums.
Works Area - Portion S-A
Ÿ
The Contractor was
reminded to provide chemical label and drip tray for the chemical drums.
|
|
30 January 2019
|
Works Area – TBM tunnel
Ÿ
Cement bags should
be covered with tarpaulin sheets.
Works Area - Portion S-A
Ÿ
Drip tray should
be provided for the chemical drums.
Ÿ
Drip tray should
be provided for the air compressor.
Works Area - Portion S-B
Ÿ
NRMM label should
be displayed on the crawler crane.
Ÿ
Oil leakage from
the air compressor should be cleared.
|
Works Area – TBM tunnel
Ÿ
The Contractor was
reminded to cover the cement bags with tarpaulin sheets.
Works Area - Portion S-A
Ÿ
The Contractor was
reminded to provide drip tray for the chemical drums.
Ÿ
The Contractor was
reminded to provide drip tray for the air compressor.
Works Area - Portion S-B
Ÿ
The Contractor was
reminded to display the NRMM label on the crawler crane.
Ÿ
The Contractor was
reminded to clear the oil leakage from the air compressor.
|
|
8
February 2019
|
Works Area – Portion N-A
Ÿ
Debris trapped in
the surface channel should be removed.
|
Works Area – Portion N-A
Ÿ
The Contractor was
reminded to remove the debris trapped in the surface channel.
|
|
13 February 2019
|
Works Area – Portion S-B
Ÿ
Chemical labels
should be provided for the chemical drums.
Reminder from the SOR
Works Area – TBM tunnel
Ÿ
Stagnant water
should be pumped away.
|
Works Area – Portion S-B
Ÿ
The Contractor was
reminded to provide chemical labels for the chemical drums.
Reminder from the SOR
Works Area – TBM tunnel
Ÿ
The Contractor was
reminded to pump away the stagnant water.
|
|
20
February 2019
|
Works Area – Portion N-A
Ÿ
Accumulated waste
in the waste skip should be removed.
Ÿ
The water pipe
should be connected to the wetsep for wastewater treamtment.
Works Area – Portion S-A
Ÿ
Drip tray should
be provided for the chemical drums.
Works Area - Portion S-B
Ÿ
Spilled oil on the
ground should be cleared.
Ÿ
Accumulated waste
in the waste skip should be removed.
Reminder from the SOR
Works Area – Portion N-A
Ÿ
Stagnant water at
the top of the chemical drums should be cleared.
Ÿ
Stagnant water
trapped inside the concrete bricks containment should be cleared.
|
Works Area – Portion N-A
Ÿ
The Contractor was
reminded to remove the accumulated waste in the waste skip.
Ÿ
The Contractor was
reminded to connect the water pipe to the wetsep for wastewater treatment.
Works Area – Portion S-A
Ÿ
The Contractor was
reminded to provide drip tray for the chemical drums.
Works Area - Portion S-B
Ÿ
The Contractor was
reminded to clear the spilled oil on the ground.
Ÿ
The Contractor was
reminded to remove the accumulated waste in the waste skip.
Reminder from the SOR
Works Area – Portion N-A
Ÿ
The Contractor was
reminded to clear the stagnant water at the top of the chemical drums.
Ÿ
The Contractor was
reminded to clear the stagnant water trapped inside the concrete bricks
containment.
|
|
28 February 2019
|
Works Area – TBM tunnel
Ÿ
Exposed cement
bags should be covered.
Reminder from the SOR
Works Area – Portion S-B
Ÿ
Stagnant water
trapped in the I-beam should be cleared.
Ÿ
Stagnant water and
rubbish trapped in the tank should be cleared.
|
Works Area – TBM tunnel
Ÿ
The Contractor was
reminded to cover the exposed cement bags.
Reminder from the SOR
Works Area – Portion S-B
Ÿ
The Contractor was
reminded to clear the stagnant water trapped in the I-beam.
Ÿ
The Contractor was
reminded to clear the stagnant water and rubbish trapped in the tank.
|
|
|
|
|
The Contractor has rectified all of the observations as
identified during environmental site inspections in the reporting quarter.
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 include mainly construction wastes (inert and non-inert). Reference has
been made to the waste flow table prepared by the Contractor (Appendix K). The
quantities of different types of wastes are summarized in Table 2.13.
Table 2.13 Quantities of Different Waste
Generated in the Reporting Period
|
Month/Year
|
Inert Construction Waste (a)
(tonnes)
|
Inert Construction Waste Re-used
(tonnes)
|
Non-inert Construction Waste (b)
(tonnes)
|
Recyclable Materials (c)
(kg)
|
Chemical Wastes (kg)
|
Marine Sediment (m3)
|
|
Category L
|
Category M
(Mp & Mf)
|
Mixed
(L+M)
|
|
December
2018
|
146,997
|
137,101
|
519
|
213,450
|
0
|
0
|
0
|
0
|
|
January
2019
|
299,831
|
268,846
|
538
|
394,550
|
0
|
0
|
1,095
|
0
|
|
February
2019
|
133,335
|
113,728
|
578
|
104,340
|
1,672
|
0
|
1,115
|
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 2.14 below.
One (1) Limit Level exceedance was observed
for the quarterly dolphin monitoring data between December 2018 and February
2019, whilst no unacceptable impact from the construction activities of the
TM-CLKL Northern Connection Sub-sea Tunnel Section on Chinese White Dolphins
was noticeable from general observations.
Cumulative statistics are provided in Appendix J.
The Environmental Complaint Handling
Procedure is provided in Figure
2.4.
No environmental complaint was received
in this reporting period.
No environmental summons was received in
this reporting period.
Statistics on complaints, notifications
of summons and successful prosecutions are summarized in Appendix J.
3
Future Key Issues
As informed by the Contractor, the major
works for the Project in the coming quarter are summarized in Table 3.1.
Table 3.1 Construction Works to Be
Undertaken in the Coming Quarter
|
Works to be undertaken
|
|
Land-based
Works
·
Construction of
Cross Passage Tympanum – TBM tunnel;
·
Cross Passage
Lining Installation – TBM Tunnel;
·
Cross Passage
Construction by Pipe Jacking – TBM Tunnel;
·
Corbel & OVHD
Construction – TBM Tunnel;
·
RC structure –
Portion N-A & S-A; and
·
D-wall
Construction – Portion N-A
|
3.2
Key Issues for the Coming Quarter
Potential environmental
impacts arising from the above upcoming construction activities in the coming
quarterly period are expected to be mainly associated with dust, marine ecology
and waste management issues.
Impact monitoring for air quality and
marine ecology (include dolphin monitoring) are scheduled to continue for the
next reporting period.
The monitoring programme has been
reviewed and was considered as adequate to cater for the nature of works in
progress. Change
to the monitoring programme was thus not considered to be necessary at this
stage. The monitoring programme will be evaluated as appropriate in the next
reporting period.
4
Conclusions
This Twenty-first Quarterly
EM&A Report presents the findings of the EM&A activities undertaken
during the period from 1 December 2018 to 28 February 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 and dolphin monitoring were carried out in the reporting
period. Eight (8) Action Level exceedance and
One (1) Limit Level exceedance of 1-hour TSP was recorded. One (1) Action
Level exceedance of 24-hour TSP was recorded in the air quality monitoring of
this reporting period.
No exceedances were recorded in the
water quality monitoring of this reporting month.
A total of 12 groups of 38 Chinese White
Dolphins sightings
were recorded during the six sets
of surveys in this
reporting quarter. Ten of the twelve dolphin sightings were made during on-effort search, and eight
of the ten on-effort dolphin sightings were made on primary lines. Whilst
one limit level exceedance was observed for the quarterly dolphin monitoring
data between December
2018 and February 2019, no
unacceptable impact from the construction activities of this Contract was
recorded from the general observations.
Although the dolphins infrequently occurred along the
alignment of TM-CLKL Northern Connection Sub-Sea Tunnel Section in the past and
during the baseline monitoring period, it is apparent that dolphin usage has
been significantly reduced in NEL. It is critical to monitor the dolphin usage
in North Lantau region in the upcoming quarters, to determine whether the
dolphins are continuously affected by the various construction activities in
relation to the construction works of the Contract, and whether suitable
mitigation measure can be applied to improve the situation.
Thirteen weekly environmental site inspections
were carried out in the reporting period. Recommendations on remedial actions
provided for the deficiencies identified during the site audits were properly
implemented by the Contractor. No non-compliance event was
recorded during the reporting period.
The monitoring programme has been
reviewed and was considered as adequate to cater for the nature of works in
progress. Change
to the monitoring programme was thus not recommended at this stage. The
monitoring programme will be evaluated as appropriate in the next 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.