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table of Contents
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 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
3.1 Construction
Activities for the Coming Month
3.2 Key
Issues for the Coming Month
3.3 Monitoring
Schedule for the Coming Month
4 Conclusions
and recommendations
4.1 Conclusions
Appendix A Project Organization for
Environmental Works
Appendix B Construction Programme
Appendix
C Environmental Mitigation And
Enhancement Measure Implementation Schedules (EMIS)
Appendix D Summary of Action And Limit
Levels
Appendix E Copies of Calibration
Certificate for Air Quality Monitoring
Appendix F EM&A Monitoring Schedules
Appendix G Impact Air Quality Monitoring
Results
Appendix H Meteorological Data
Appendix I Impact Dolphin Monitoring
Survey
Appendix J Event
And Action Plan
Appendix K Cumulative Statistics On
Exceedance, Complaints, Notifications of Summons and Successful Prosecutions
Appendix L Waste Flow Table
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 Sixty-fourth Monthly EM&A report
presenting the EM&A works carried out during the period from 1 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 Contract. As
informed by the Contractor, major activities in the reporting period 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;
·
RC structure – Portion N-A & S-A; and
·
D-wall Construction – Portion N-A
A summary of monitoring and audit activities conducted
in the reporting period is listed below:
24-hour TSP Monitoring 9
sessions
1-hour TSP Monitoring 9
sessions
Impact Dolphin Monitoring 2 sessions
Joint Environmental Site Inspection 4 sessions
Implementation
of Marine Mammal Exclusion Zone
There was no dredging, reclamation or
marine sheet piling works in open waters during this reporting period.
Thus, Passive Acoustic Monitoring (PAM) and the day-time monitoring of Dolphin
Exclusion Zone (DEZ) by dolphin observers were not in effect during the
reporting period.
Summary of Breaches of Action/Limit Levels
Breaches of
Action and Limit Levels for Air Quality
One (1) Action Level exceedance of 24-hour TSP was recorded
at ASR1 on 16 February 2019. Investigation
reports are provided in Appendix K.
Breaches
of Action and Limit Levels for 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. Due to monthly variation
in dolphin occurrence within the study area, it would be more appropriate to
draw conclusion on whether any impacts on dolphins have been detected related
to the construction activities of the TM-CLKL Northern Connection Sub-sea
Tunnel Section in the quarterly EM&A reports, where comparison on
distribution, group size and encounter rates of dolphins between the quarterly
impact monitoring period and baseline monitoring period will be made.
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
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
temporarily suspended after January 2019.
EPD was notified on 31 January 2019 of the temporary suspension of Water
Quality Monitoring. Water Quality
Monitoring will be resumed prior to the commencement of stage 2 of sloping
seawall construction in June 2019.
Upcoming Works for the Next Reporting Month
Works to be undertaken in the next monitoring period of
March 2019 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 Issue
Potential environmental impacts arising from the above
upcoming construction activities in the next reporting month of March 2019 are
mainly associated with dust, marine ecology and waste management issues.
1
Introduction
1.1
Background
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/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). 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.
1.2
Scope
of Report
This is the Sixty-fourth Monthly 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 in 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 |
1.4
Summary
of Construction Works
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; ·
RC structure – Portion N-A & S-A; and ·
D-wall Construction – Portion N-A |
Figure 1.2 Locations of Construction Activities – 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
2.1
Air
quality
2.1.1
Monitoring Requirements and Equipment
In accordance with the Updated EM&A Manual and the
Enhanced TSP Monitoring Plan, impact 1-hour TSP monitoring was conducted three
(3) times every six (6) days and impact 24-hour TSP monitoring was carried out once
every six (6) days when the highest dust impact was expected. 1-hr and 24-hr TSP monitoring frequency was
increased to three times per day every three days and daily every three days,
respectively, as excavation works for launching shaft commenced on 24 October
2014.
High volume samplers (HVSs) were used to carry out the
1-hour and 24-hour TSP monitoring on 1, 4, 10, 13, 16, 19, 22, 25 and 28 February
2019 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 meter 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. Copies of the calibration certificates for the
equipment are presented in Appendix E.
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 |
1,
4, 10, 13, 16, 19, 22, 25 and 28 February 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 |
|
Pillar
Point Fire Station |
Office |
|
|
AQMS1 |
|
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 |
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
J.
2.1.3
Monitoring Schedule for the Reporting Month
The schedule for air quality monitoring in February 2019
is provided in Appendix F.
2.1.4
Results and Observations
The monitoring results for 1-hour TSP and 24-hour TSP
are summarized in Tables 2.3 and 2.4, respectively. Detailed impact air quality monitoring results
and graphical presentations are presented in Appendix G.
Table 2.3 Summary of 1-hour TSP Monitoring Results in this Reporting
Period
|
Station |
Average (µg/m3) |
Range (µg/m3) |
Action Level (µg/m3) |
Limit Level (µg/m3) |
|
ASR1 |
166 |
76
- 290 |
331 |
500 |
|
ASR5 |
173 |
55
- 304 |
340 |
500 |
|
AQMS1 |
106 |
47 –
173 |
335 |
500 |
|
ASR6 |
122 |
58
- 218 |
338 |
500 |
|
ASR10 |
78 |
25
- 135 |
337 |
500 |
Table 2.4 Summary of 24-hour TSP Monitoring Results in this Reporting
Period
|
Station |
Average (µg/m3) |
Range (µg/m3) |
Action Level (µg/m3) |
Limit Level (µg/m3) |
|
ASR1 |
115 |
60
- 237 |
213 |
260 |
|
ASR5 |
100 |
53
- 153 |
238 |
260 |
|
AQMS1 |
63 |
42
- 102 |
213 |
260 |
|
ASR6 |
78 |
48
- 118 |
238 |
260 |
|
ASR10 |
55 |
35
- 82 |
214 |
260 |
The weather condition during the monitoring period
varied from sunny to cloudy. The major
dust sources in the reporting period included construction activities under the
Contract as well as nearby traffic emissions.
A total of 9 1-hour TSP and 24-hour TSP monitoring
were undertaken in this reporting month.
One (1) Action Level exceedance of 24-hour TSP was recorded at ASR1 on 16
February 2019.
Meteorological information collected at the ASR5,
including wind speed and wind direction, is provided in Appendix H.
2.2
Water
Quality Monitoring
2.2.1
Monitoring Requirements & Equipment
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.
2.3
Dolphin Monitoring
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 2.5 summarises
the equipment used for the impact dolphin monitoring.
Table 2.5 Dolphin Monitoring Equipment
|
Equipment |
Model |
|
Global Positioning
System (GPS) |
Garmin 18X-PC Geo One Phottix |
|
Camera |
Nikon D90 300m 2.8D fixed focus Nikon D90 20-300m zoom lens |
|
Laser Binocular |
Infinitor LRF 1000 |
|
Marine Binocular |
Bushell 7 x 50 marine binocular with compass and reticules |
|
Vessel for Monitoring |
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 2.2. The co-ordinates of all transect lines are
shown in Table 2.6 below.
Table 2.6 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 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 impact dolphin monitoring
are shown in Appendix D. The Event and Action plan is presented in Appendix
J.
2.3.6
Monitoring Schedule for the Reporting Month
Dolphin monitoring was carried out on 1, 14, 20, 25 and
26 of February 2019. The dolphin
monitoring schedule for the reporting month is shown in Appendix F.
2.3.7
Results & Observations
A total of 273.04 km of survey
effort was collected, with 94.6% of the total survey effort being conducted
under favourable weather conditions (i.e. Beaufort Sea State 3 or below with
good visibility) in February 2019.
Among the two areas, 107.30 km and 165.74
km of survey effort were collected from NEL and NWL survey areas, respectively.
The total survey effort conducted on
primary and secondary lines were 195.52 km and 77.52 km respectively. The survey efforts are summarized in Appendix I.
Six group of 18 Chinese White Dolphins sightings was recorded
during the two sets of surveys in February 2019. All the dolphin sightings were made in NWL,
while none was sighted in NEL. All dolphin
sightings were made during on-effort search and four of them were made on
primary lines. The dolphin groups were not
associated with any operating fishing vessel.
No dolphin sighting was made in the proximity
of the TM-CLKL alignment. The distribution of dolphin sightings during the
reporting month is shown in Figure 2.3.
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) in February 2019 with the results present in Tables 2.7 and 2.8.
Table 2.7 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: February 1st / 14th |
0.0 |
0.0 |
|
Set 2: February 20th/ 25th/26th |
0.0 |
0.0 |
|
|
NWL |
Set 1: February 1st / 14th |
3.9 |
7.7 |
|
Set 2: February 20th/ 25th/26th |
3.3 |
13.2 |
|
Note: Dolphin Encounter Rates
are deduced from the Two Sets of Surveys (Two Surveys in Set 1 and Three
Surveys in Set 2) in February 2019 in Northeast (NEL) and Northwest Lantau
(NWL)
Table 2.8 Monthly 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) |
||
|
Primary
Lines Only |
Both Primary and Secondary Lines |
Primary
Lines Only |
Both Primary and Secondary Lines |
|
|
Northeast Lantau |
0.0 |
0.0 |
0.0 |
0.0 |
|
Northwest Lantau |
3.6 |
3.8 |
10.7 |
11.5 |
Note:
Overall dolphin encounter rates (sightings per 100 km of survey effort) from
all five surveys are conducted in February 2019 on primary lines only as well
as both primary lines and secondary lines in Northeast and Northwest Lantau.
Due
to monthly variation in dolphin occurrence within the survey area, it would be
more appropriate to draw conclusion on whether any unacceptable impacts on
dolphins have been detected in relation to the construction activities of this Contract
in the quarterly EM&A reports, where comparison on distribution, group size
and encounter rates of dolphins between the quarterly impact monitoring period
and baseline monitoring period will be made.
2.3.8
Implementation of Marine Mammal Exclusion Zone
There was no dredging, reclamation or
marine sheet piling works in open waters during this reporting period.
Thus, Passive Acoustic Monitoring (PAM) and the day-time monitoring of Dolphin
Exclusion Zone (DEZ) by dolphin observers were not in effect during the
reporting period.
2.4
EM&A Site Inspection
Site inspections were carried out on a weekly basis to
monitor the implementation of proper environmental pollution control and mitigation
measures under the Contract. In the
reporting month, four (4) site inspections were carried out on 8, 13, 20 and 28
February 2019.
Key observations and recommendations during the site
inspections in this reporting period are summarized in Table 2.9.
Table 2.9 Specific Observations and Recommendations during the Weekly
Site Inspection in this Reporting Month
|
Inspection Date |
Observations |
Recommendations/ Remarks |
|
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 Chemica
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 month.
2.5
Waste
Management Status
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 L). The quantities of different types of wastes are
summarized in Table 2.10.
Table 2.10 Quantities of Different Waste Generated in the Reporting Month
|
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) |
||||||
|
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.
2.6
Environmental
Licenses and Permits
The status of environmental licensing and permit is
summarized in Table 2.11 below.