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
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 in early 2020. 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-fourth Quarterly EM&A
report presenting the EM&A works carried out during the period from 1 September
2019 to 30 November 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 Thermal barrier – TBM tunnel;
·
Construction
of Walkway Corbel & Cover – TBM Tunnel;
·
Road
& Drainage works – Portion N-A and Portion S-C;
·
Gantry
Crane Removal – Portion N-A;
·
RC
structure – Portion S-A;
·
E&M
Platform Installation – Portion S-A;
·
Backfilling
– Portion S-A & S-C;
·
Water
Treatment Facilities Dismantling – Portion S-C; and
·
Cut
& Cover Tunnel RC structure – Portion S-C
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 30
sessions
1-hour TSP Monitoring 30
sessions
Water Quality Monitoring 39
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 (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 and four (4) Limit Level
exceedances of 1-hour TSP and were recorded in this reporting period. Investigation
reports are provided in Appendix
J.
Breaches of Action and Limit Levels for Water
Quality
Thirty-five (35) Action
level of Dissolved Oxygen were recorded in this reporting period. Four (4)
Action Level exceedance for Depth-averaged suspended solids was recorded. Investigation
reports are provided in Appendix
J.
Dolphin Monitoring
Whilst one (1) Limit Level exceedance was observed
for the quarterly dolphin monitoring data between September and November 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
Water quality monitoring was
carried out in the reporting period in view of the commencement of seawall modification
works since 12 August 2019.
Contract No. HY/2012/08 has
taken over the responsibility for implementation of dolphin monitoring from
HZMB HKLR Contract No. HY/2011/03 since October 2019.
Upcoming
Works for the Next Reporting Period
Works to be undertaken in the coming quarterly
period include the following:
Land-based Works
·
Construction
of Thermal barrier – TBM tunnel;
·
Construction
of Walkway Corbel & Cover – TBM Tunnel;
·
Road
& Drainage works – Portion N-A
·
Gantry
Crane Removal – Portion N-B & Portion S-C;
·
RC
structure – Portion S-A;
·
E&M
Platform Installation – Portion S-A
·
Backfilling
– Portion S-A & S-C;
·
Water
Treatment Facilities Dismantling – Portion S-C;
·
Cut
& Cover Tunnel RC structure – Portion S-C
·
Tower
Crane Removal – Portion S-C
Marine-based Works
·
Seawall
Modification Works – Portion S-B
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, marine water
quality 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 in early 2020. 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-fourth 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
September 2019 to 30 November 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 24/SD
|
Ken T.M. Cheng
|
2762
4062
|
3188
6614
|
|
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
|
|
|
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 Contract 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 Thermal barrier – TBM tunnel;
·
Construction
of Walkway Corbel & Cover – TBM Tunnel;
·
Road
& Drainage works – Portion N-A;
·
Gantry
Crane Removal – Portion N-A;
·
RC
structure – Portion S-A;
·
Backfilling
– Portion S-A & S-C;
·
Water
Treatment Facilities Dismantling – Portion S-C;
·
Road
& Drainage - Portion S-C
Marine-based Works
·
Seawall
Modification Works – Portion S-B
|
Figure
1.2 Locations
of Construction Activities – September to November 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
|
2, 5, 8, 11, 14, 17, 20, 23,
26 and 29 September 2019
|
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 October 2019
|
Pillar Point Fire Station
|
Office
|
|
AQMS1
|
1, 4, 7, 10, 13, 16, 19, 22,
25 and 28 November 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 Seventy-first to Seventy-third 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)
|
|
September to November 2019
|
ASR 1
|
162
|
23 -
626
|
331
|
500
|
|
ASR 5
|
183
|
25 -
534
|
340
|
500
|
|
AQMS1
|
108
|
14 -
204
|
335
|
500
|
|
ASR6
|
111
|
14 -
216
|
338
|
500
|
|
ASR10
|
66
|
13 -
143
|
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)
|
|
September to November 2019
|
ASR 1
|
104
|
28 -
207
|
213
|
260
|
|
ASR 5
|
111
|
55 -
196
|
238
|
260
|
|
AQMS1
|
71
|
25 -
108
|
213
|
260
|
|
ASR6
|
81
|
32 -
145
|
238
|
260
|
|
ASR10
|
54
|
22 -
95
|
214
|
260
|
Eight (8) Action level and
four (4) Limit Level exceedances of 1-hour TSP and were recorded in this
reporting period. 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 was carried out in this reporting period.
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)
|
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
|
|
IS(Mf)9
|
Impact Station (Close
to HKBCF construction site)
|
813273
|
818850
|
|
|
|
|
IS(Mf)16
|
Impact Station (Close
to HKBCF construction site)
|
814328
|
819497
|
|
|
|
|
IS8(N)
|
Impact Station (Close
to HKBCF construction site)
|
814413
|
818570
|
|
|
|
|
SR4(N2)
|
Sensitive receiver
(Tai Ho Inlet)
|
814688
|
817996
|
|
|
|
|
SR4a
|
Sensitive receiver
|
815247
|
818067
|
|
|
|
|
CS(Mf)3(N)
|
Control Station
|
808814
|
822355
|
|
|
|
|
CS(Mf)5
|
Control Station
|
817990
|
821129
|
|
|
|
|
*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.
Water Quality Monitoring
Station CS(Mf)3 was relocated to CS(Mf)3(N) since 2 May 2017.
Water Quality Monitoring
Station SR4 was relocated to SR4(N) since 2 March 2018.
Water Quality Monitoring
Station SR4(N) was relocated to SR4(N2) since 12 June 2019
Water Quality
Monitoring Station IS8 was relocated to IS8(N) since 12 June 2019.
|
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 18A104824
|
|
Multi-Parameters
|
YSI ProDss 15M100005
|
|
Multi-Parameters
Multi-Parameters
Multi-Parameters
Multi-Parameters
Multi-Parameters
|
YSI ProDss 0001C6A7
YSI ProDss 17H105557
YSI ProDss 00019CB2
YSI ProDss 17E100747
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 Seventy-first and Seventy-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, Contract No. HY/2012/08 has taken over the
responsibility for implementation of dolphin monitoring from HZMB HKLR Contract
No. HY/2011/03 since October 2019.
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 796.79 km of
survey effort was conducted, with 97.9% 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, 293.68 km and 503.11
km of survey effort were conducted from NEL and NWL survey areas,
respectively. The total survey effort conducted on primary and secondary lines
were 572.39 km and 224.40 km, respectively. The survey efforts are summarized
in Appendix H.
A total of 4 groups
of 7 Chinese White Dolphins sightings
were recorded during the six sets of surveys in this reporting quarter. All four
dolphin sightings were made during on-effort search, and three of
the four 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 (4 & 11 Sep
2019)
|
0.00
|
0.00
|
|
Set 2 (17 & 23
Sep 2019)
|
0.00
|
0.00
|
|
Set 3 (8 & 9 Oct
2019)
|
0.00
|
0.00
|
|
Set 4 (14 & 29
Oct 2019)
|
0.00
|
0.00
|
|
Set 5 (5 & 19 Nov
2019)
|
0.00
|
0.00
|
|
Set 6 (27 & 28
Nov 2019)
|
0.00
|
0.00
|
|
NWL
|
Set 1 (4 & 11 Sep
2019)
|
1.64
|
3.28
|
|
Set 2 (17 & 23
Sep 2019)
|
0.00
|
0.00
|
|
Set 3 (8 & 9 Oct
2019)
|
1.68
|
1.68
|
|
Set 4 (14 & 29
Oct 2019)
|
0.00
|
0.00
|
|
Set 5 (5 & 19 Nov
2019)
|
1.67
|
1.67
|
|
Set 6 (27 & 28
Nov 2019)
|
0.00
|
0.00
|
Note: Dolphin
Encounter Rates are deduced from the Two Sets of Surveys (Two 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)
|
|
September – November 2019
|
September – November 2011
|
September – November 2019
|
September – November 2011
|
|
Northeast Lantau
|
0.0
|
6.00 ± 5.05
|
0.0
|
22.19 ± 26.81
|
|
Northwest Lantau
|
0.83 ± 0.91
|
9.85 ±
5.85
|
1.10 ± 1.34
|
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.
Table d
4.6
nd limit
levels of dolphin impact monitoring are shown in Table
Group size of Chinese
White Dolphins ranged from 1 – 3 individuals per group in North Lantau region
during September to November 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
|
|
September – November 2019
|
September – November 2011
|
|
Overall
|
1.75 ± 0.96 (n = 4)
|
3.72 ±
3.13 (n = 66)
|
|
Northeast Lantau
|
---
|
3.18
± 2.16 (n = 17)
|
|
Northwest Lantau
|
1.75 ± 0.96 (n = 4)
|
3.92 ±
3.40 (n = 49)
|
Whilst one limit level
exceedance was observed for the quarterly dolphin monitoring data between September
and November 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
(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 4, 11, 18
and 25 September 2019; 2, 9, 16, 23 and 30 October 2019; 7, 14, 21 and 28
November 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
|
|
4 September 2019
|
Works
Area – Portion N-A
Ÿ Food
waste in the skip should be removed.
Ÿ Drip
tray should be provided for the chemical containers.
Ÿ The
faded NRMM label should be replaced.
Ÿ The
broken water barrier should be removed.
Works
Area - Portion S-A
Ÿ Food
waste should be removed.
|
Works
Area – Portion N-A
Ÿ The
Contractor was reminded to Remove the food waste in the skip.
Ÿ The
Contractor was reminded to provide drip tray for the chemical containers.
Ÿ The
Contractor was reminded to replace the NRMM label.
Ÿ The
Contractor was reminded to remove the broken water barrier.
Works
Area - Portion S-A
Ÿ The
Contractor was reminded to remove the food waste.
|
|
11
September 2019
|
Works
Area – TBM tunnel
Ÿ Better
housekeeping should be maintained.
Ÿ The
broken water barrier should be removed.
Ÿ Water
spraying should be applied for dust control.
Works
Area - Portion S-A
Ÿ Food
waste should be removed.
Works
Area – Portion S-B
Ÿ Oil
spillage on the floor should be cleaned up.
|
Works
Area – TBM tunnel
Ÿ The
Contractor was reminded to maintain better housekeeping.
Ÿ The
Contractor was reminded to remove the broken water barrier.
Ÿ The
Contractor was reminded to apply water spraying for dust control.
Works
Area - Portion S-A
Ÿ The
Contractor was reminded to remove the food waste.
Works
Area – Portion S-B
Ÿ The
Contractor was reminded to clean up the oil spillage on the floor.
|
|
18 September 2019
|
Works
Area – Portion N-B
Ÿ Waste
should be removed and better housekeeping should be maintained.
Ÿ Drip
tray should be provided for the chemical containers.
Reminder
from the SOR
Works
Area – Portion S-B
Ÿ Stagnant
water and rubbish should be cleared.
Ÿ Stagnant
water should be cleared.
|
Works
Area – Portion N-B
Ÿ The
Contractor was reminded to remove the waste and maintain better housekeeping.
Ÿ The
Contractor was reminded to provide drip tray for the chemical containers.
Reminder
from the SOR
Works
Area – Portion S-B
Ÿ The
Contractor was reminded to clear the stagnant water and rubbish.
Ÿ The
Contractor was reminded to clear the stagnant water.
|
|
25
September 2019
|
Works
Area – Portion S-B
Ÿ Waste
and stagnant water should be cleared.
Works
Area - Portion N-B
Ÿ Waste
should be cleared and better housekeeping should be maintained.
Ÿ Drip
tray should be provided for the chemical containers.
Reminder
from the SOR
Works
Area – Portion S-B
Ÿ Stagnant
water should be cleared.
|
Works
Area – Portion S-B
Ÿ The
Contractor was reminded to clear the waste and stagnant water.
Works
Area - Portion N-B
Ÿ The
Contractor was reminded to clear the waste and maintain better housekeeping.
Ÿ The
Contractor was reminded to provide drip tray for the chemical containers.
Reminder
from the SOR
Works
Area – Portion S-B
Ÿ The
Contractor was reminded to clear the stagnant water.
|
|
2 October 2019
|
Works
Area – Portion N-A
Ÿ Water
spraying should be applied on main haul road.
Ÿ NRMM
label on machine should be fixed.
Works
Area – Portion S-B
Ÿ Water
spraying should be applied on main haul road.
Ÿ Food
waste in the waste skip should be cleared.
Reminder
from the SOR
Works
Area - Portion S-B
Cover
of the water barrier should be provided.
|
Works
Area – Portion N-A
Ÿ The
Contractor was reminded to apply water spraying on the main haul road.
Ÿ The
Contractor was reminded to fix the NRMM label on machine.
Works
Area – Portion S-B
Ÿ The
Contractor was reminded to apply water sraying on the main haul road.
Ÿ The
Contractor was reminded to clear the food waste in the waste skip.
Reminder
from the SOR
Works
Area - Portion S-B
The
Contractor was reminded to provide the cover of the water barrier.
|
|
9
October 2019
|
Works
Area – TBM tunnel
Ÿ Food
waste should be removed and better housekeeping should be maintained.
Works
Area – Portion S-A
Ÿ Cement
bages should be covered with tarpaulin sheets.
Reminder
from the SOR
Works
Area – TBM tunnel
Ÿ Stagnant
water should be cleared.
Works
Area - Portion S-A
Ÿ Stagnant
water should be cleared.
|
Works
Area – TBM tunnel
Ÿ The
Contractor was reminded to remove the food waste and maintain better
housekeeping.
Works
Area – Portion S-A
Ÿ The
Contractor was reminded to cover the cement bags with tarpaulin sheets.
Reminder
from the SOR
Works
Area – TBM tunnel
Ÿ The
Contractor was reminded to clear the stagnant water.
Works
Area - Portion S-A
Ÿ The
Contractor was reminded to clear the stagnant water.
|
|
16 October 2019
|
Works
Area – Portion S-A
Ÿ Faded
NRMM label should be replaced.
Works
Area – Portion S-B
Ÿ Food
waste in the skip should be cleared.
Works
Area – Portion N-A
Ÿ Drip
tray should be provided for the chemical containers.
Reminder
from the SOR
Works
Area – Portion S-A
Ÿ Stagnant
water should be cleared.
Works
Area – Portion N-A
Ÿ Lifting
eyes should be filled with sand.
|
Works
Area – Portion S-A
Ÿ The
Contractor was reminded to replace the faded NRMM label.
Works
Area – Portion S-B
Ÿ The
Contractor was reminded to clear the food waste in the skip.
Works
Area – Portion N-A
Ÿ The
Contractor was reminded to provide drip tray for the chemical containers.
Reminder
from the SOR
Works
Area – Portion S-A
Ÿ The
Contractor was reminded to clear the stagnant water.
Works
Area – Portion N-A
Ÿ The
Contractor was reminded to fill the lifting eyes with sand.
|
|
23
October 2019
|
Works
Area – Portion S-A
Ÿ Cement
batching station should be sheltered on top and 3 sides.
Ÿ Cement
bags should be covered with tarpaulin sheets.
Works
Area – TBM tunnel
Ÿ Cement
bages should be covered with tarpaulin sheets.
Reminder
from the SOR
Works
Area – TBM tunnel
Covers
of the water barrier should be provided.
|
Works
Area – Portion S-A
Ÿ The
Contractor was reminded to shelter the cement batching station on top and 3
sides.
Ÿ The
Contractor was reminded to cover the cement bags with tarpaulin sheets.
Works
Area – TBM tunnel
Ÿ The
Contractor was reminded to cover the cement bags with tarpaulin sheets.
Reminder
from the SOR
Works
Area – TBM tunnel
The
Contractor was reminded to provide covers for the water barrier.
|
|
30
October 2019
|
Works
Area – Portion S-A
Ÿ The
faded NRMM label on the air compressor should be replaced.
Works
Area – Portion S-B
Ÿ Food
waste should be removed.
Works
Area – Poriton N-A
Ÿ Food
waste from the skip should be removed.
Ÿ The
damaged NRMM label should be replaced.
Reminder
from the SOR
Works
Area – Portion N-A
Ÿ The
oil leakage should be fixed.
Ÿ
|
Works
Area – Portion S-A
Ÿ The
Contractor was reminded to replace the faded NRMM label on the air
compressor.
Works
Area – Portion S-B
Ÿ The
Contractor was reminded to remove the food waste.
Works
Area – Poriton N-A
Ÿ The
Contractor was reminded to remove the food waste from the skip.
Ÿ The
Contractor was reminded to replace the damaged NRMM label.
Reminder
from the SOR
Works
Area – Portion N-A
Ÿ The
Contractor was reminded to fix the oil leakage.
Ÿ
|
|
7 November 2019
|
Works
Area – TBM tunnel
Ÿ The
cement batching station should be sheltered on top and 3 sides.
Works
Area – Portion S-A
Ÿ Drip
tray should be provided for the chemical containers.
Ÿ Broken
water barrier should be removed.
Reminder
from the SOR
Works
Area - Portion S-A
Ÿ The
lifting eyes should be filled with sand.
|
Works
Area – TBM tunnel
Ÿ The
Contractor was reminded to shelter the cement batching station on top and 3
sides.
Works
Area – Portion S-A
Ÿ The
Contractor was reminded to provide drip tray for the chemical containers.
Ÿ The
Contractor was reminded to remove the broken barrier.
Reminder
from the SOR
Works
Area - Portion S-A
Ÿ The
Contractor was reminded to fill the lifting eyes with sand.
|
|
14
November 2019
|
Works
Area – Portion S-B
Ÿ The
damaged NRMM label for the excavator should be replaced.
Works
Area – Portion N-A
Ÿ Water
spraying should be applied on main haul raod.
Ÿ Drip
tray should be provided for the chemical containers.
Reminder
from the SOR
Works
Area – Portion S-B
Ÿ Stagnant
water should be cleared.
|
Works
Area – Portion S-B
Ÿ The
Contractor was reminded to replace the damaged NRMM label for the excavator.
Works
Area – Portion N-A
Ÿ The
Contractor was reminded to apply water spraying on main haul road.
Ÿ The
Contractor was reminded to provide drip tray for the chemical containers.
Reminder
from the SOR
Works
Area – Portion S-B
Ÿ The
Contractor was reminded to clear the stagnant water.
|
|
21 November 2019
|
Works
Area – TBM tunnel
Ÿ The NRMM
label should be replaced.
Ÿ Food
waste from the skip should be removed and better housekeeping should be
maintained.
Works
Area – Portion S-B
Ÿ Drip
tray should be provided for the chemical containers.
Reminder
from the SOR
Works
Area – Portion S-A
Ÿ Broken
water barrier should be replaced.
|
Works
Area – TBM tunnel
Ÿ The
Contractor was reminded to replace the NRMM label.
Ÿ The
Contractor was reminded to remove the food waste from the skip and maintain
better housekeeping.
Works
Area – Portion S-B
Ÿ The
Contractor was reminded to provide drip tray for the chemical containers.
Reminder
from the SOR
Works
Area – Portion S-A
Ÿ The
Contractor was reminded to replace the broken water barrier.
|
|
28
November 2019
|
Works
Area – Portion S-A
Ÿ Food
waste should be removed.
Works
Area – TBM tunnel
Ÿ The
faded NRMM label should be replaced.
|
Works
Area – Portion S-A
Ÿ The
Contractor was reminded to remove the food waste.
Works
Area – TBM tunnel
Ÿ The
Contractor was reminded to replace the NRMM label.
|
|
|
|
|
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)
|
|
September 2019
|
4,191(d)
|
0
|
737(d)
|
399,320
|
8,000
|
0
|
0
|
0
|
|
October 2019
|
8,366
|
0
|
754
|
524,090
|
5,800
|
0
|
0
|
0
|
|
November 2019
|
6,215
|
0
|
525
|
273,630
|
1,000
|
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.
(d) Updated
figure and waste flow table is presented in this quarterly report.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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
September and November 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 Contract 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 Thermal barrier – TBM tunnel;
·
Construction
of Walkway Corbel & Cover – TBM Tunnel;
·
Road
& Drainage works – Portion N-A
·
Gantry
Crane Removal – Portion N-B & Portion S-C;
·
RC
structure – Portion S-A;
·
E&M
Platform Installation – Portion S-A
·
Backfilling
– Portion S-A & S-C;
·
Water
Treatment Facilities Dismantling – Portion S-C;
·
Cut
& Cover Tunnel RC structure – Portion S-C
·
Tower
Crane Removal – Portion S-C
Marine-based Works
·
Seawall
Modification Works – Portion S-B
|
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, marine water quality 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-fourth Quarterly
EM&A Report presents the findings of the EM&A activities undertaken
during the period from 1 September 2019 to 30 November 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), water quality and dolphin monitoring were carried
out in the reporting period. Eight (8) Action level and four (4) Limit Level
exceedances of 1-hour TSP and were recorded in this reporting period.
Thirty-five (35) Action
level of Dissolved Oxygen were recorded in this reporting period. Four (4)
Action Level exceedance for Depth-averaged suspended solids was recorded.
A total of 4 groups
of 7 Chinese White Dolphins sightings
were recorded during the six sets of surveys in this reporting quarter. All four dolphin
sightings were
made
during on-effort search, and three of the four on-effort dolphin sightings were
made on primary lines. Whilst one limit level exceedance was observed
for the quarterly dolphin monitoring data between September to November 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.
