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 Quarter
3.2 Key Issues for the Coming
Quarter
3.3 Monitoring Schedule for the
Coming Quarter
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
Environ Hong Kong Ltd. was employed by HyD as the
Independent Environmental Checker (IEC) and Environmental Project Office
(ENPO). Subsequent applications
for variation of environmental permits (VEP), EP-354/2009/B, EP-354/2009/C
and EP-354/2009/D, were granted on 28 January 2014, 10 December 2014 and 13
March 2015, respectively.
The construction phase of the Project commenced on 1
November 2013 and will tentatively be completed by the end of 2018. 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 Thirteenth Quarterly EM&A report
presenting the EM&A works carried out during the period from 1 December
2016 to 28 February 2017 for the Contract
No. HY/2012/08 Northern
Connection Sub-sea Tunnel Section (the “Project”) 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
·
Box Culvert Extension at Works Area – Portion N-A;
·
Shaft Structure and Backfilling – Portion N-C;
·
Construction of Cross Passage Tympanum – TBM tunnel;
·
Cross Passage Lining Installation – TBM Tunnel;
·
Corbel Construction – TBM Tunnel;
·
Excavation of Sub-sea Tunnel – TBM tunnel;
·
Sub-sea Tunnel Gallery Installation – TBM tunnel;
·
Deep Band Drain Installation – Portion S-A; and
·
Jet Grouting, CSM Ground Treatment and Diaphragm Wall
Construction – Portion S-A.
Marine-based Works
·
Installation of silt curtain – Portion N-A;
·
Dredging – Portion N-A;
·
Construction of Vertical Seawall at Portion N-A;
·
Band drain installation at Portion N-A; and
·
Filling works at Portion N-A.
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 27 sessions
Impact Dolphin Monitoring 6 sessions
Joint Environmental Site Inspection 12 sessions
Implementation
of Marine Mammal Exclusion Zone
Daily
marine mammal exclusion zone was in effect during the period of dredging, reclamation or marine sheet
piling works in open waters under
this Contract. Passive Acoustic
Monitoring (PAM) was also implemented for the detection of marine mammal when dredging, reclamation or marine sheet piling works were carried out outside the
daylight hours under this Contract. No
sighting of the Indo-Pacific humpback dolphin Sousa chinensis (i.e. Chinese White
Dolphin) was recorded in February 2017 during the exclusion zone monitoring.
Summary of Breaches of Action/Limit Levels
Breaches of
Action and Limit Levels for Air Quality
No exceedances were recorded from the air quality
monitoring in this reporting period.
Breaches of
Action and Limit Levels for Water Quality
No exceedances were recorded from the water quality
monitoring in this reporting period.
Dolphin Monitoring
Whilst
one (1) Limit Level exceedance was observed for the quarterly dolphin
monitoring data between December 2016 and February 2017, 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.
One
(1) environmental complaint case regarding hammering Noise from unidentified
Sources was referred by
EPD on 14 December 2016.
One
(1) environmental complaint case regarding sewage discharge at the east of the
artificial island of the Hong Kong – Zhuhai–Macao Bridge was referred by IEC on 16 January
2017. One (1) environmental complaint
case regarding trespassing of construction vessels in Brothers Marine Park was
referred by IEC on 17 January 2017.
One
(1) environmental complaint case regarding muddy water discharge at the site
area near Ho Yeung Street was referred by EPD on 14 February 2017.
The
complaint investigation reports are provided in Appendix J.
No notification
of summons or successful prosecution recorded in the 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:
Marine-based Works
·
Construction of Vertical Seawall at Portion N-A; and
·
Band drain and Filling works at Portion N-A
Land-based Works
·
Box Culvert Extension at Works Area – Portion N-A;
·
Construction of North Ventilation Building – Portion
N-C;
·
Construction of Cross Passage Tympanum – TBM tunnel;
·
Cross Passage Lining Installation – TBM Tunnel;
·
Excavation of Sub-sea Tunnel – TBM tunnel;
·
Corbel Construction – TBM Tunnel;
·
Sub-sea Tunnel Gallery Installation – TBM tunnel;
·
Jet Grouting, CSM Ground Treatment and Diaphragm Wall
Construction – Portion S-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 water quality, marine ecology and waste
management issues.
According to the findings of the Northwest New
Territories (NWNT) Traffic and Infrastructure Review conducted by the Transport
Department, Tuen Mun Road,
Ting Kau Bridge, Lantau Link and North Lantau Highway
would be operating beyond capacity after 2016.
This forecast has been based on the estimated increase in cross boundary
traffic, developments in the Northwest New Territories (NWNT), and possible
developments in North Lantau, including the Airport developments, the Lantau
Logistics Park (LLP) and the Hong Kong – Zhuhai – Macao Bridge (HZMB). In order to cope with the anticipated traffic
demand, two new road sections between NWNT and North Lantau – Tuen Mun – Chek
Lap Kok Link (TM-CLKL) and Tuen
Mun Western Bypass (TMWB) are proposed.
An Environmental Impact Assessment (EIA) of TM-CLKL
(the Project) was prepared in accordance with the EIA Study Brief (No. ESB-175/2007) and the Technical
Memorandum of the Environmental Impact Assessment Process (EIAO-TM). The EIA Report was submitted under the
Environmental Impact Assessment Ordinance (EIAO) in August 2009. Subsequent to the approval of the EIA Report
(EIAO Register Number AEIAR-146/2009), an Environmental Permit (EP-354/2009)
for TM-CLKL was granted by the Director of Environmental Protection (DEP) on 4
November 2009, and EP variation (VEP) (EP-354/2009A) 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
Environ 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 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 Environ 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) |
Environmental
Manager |
C.F. Kwong |
2293 7322 |
2293 7499 |
Environmental
Officer |
Bryan Lee |
2293 7323 |
2293 7499 |
|
|
Environmental
Officer |
David Ho |
6628 8684 |
2293 7499 |
|
24-hour
complaint hotline |
Rachel Lam |
2293 7330 |
|
ET (ERM-HK) |
ET Leader |
Jovy Tam |
2271 3113 |
2723 5660 |
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.
Table 1.2 Summary of Construction Activities Undertaken during the
Reporting Period
Construction Activities Undertaken |
Land-based Works |
·
Box Culvert Extension at Works Area – Portion N-A; ·
Shaft Structure and Backfilling – Portion N-C; ·
Construction of Cross Passage Tympanum – TBM tunnel; ·
Cross Passage Lining Installation – TBM Tunnel; ·
Corbel Construction – TBM Tunnel; ·
Excavation of Sub-sea Tunnel – TBM tunnel; ·
Sub-sea Tunnel Gallery Installation – TBM tunnel; ·
Deep Band Drain Installation – Portion S-A; and ·
Jet Grouting, CSM Ground Treatment and Diaphragm Wall Construction –
Portion S-A. Marine-based Works ·
Installation of silt curtain – Portion N-A; ·
Dredging – Portion N-A; ·
Construction of Vertical Seawall at Portion N-A; ·
Band drain installation at Portion N-A; and ·
Filling
works at Portion N-A. |
Figure 1.2 Locations of Construction Activities –
December
2016 to February 2017
Contract no. HY/2013/12, Toll Plaza at Tuen Mun Area 46 |
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 ([1]).
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 |
1, 4, 7, 10, 13, 16, 19, 22, 25, 28 and 31 December
2016 |
Tuen Mun Fireboat Station |
Office |
TSP monitoring
1-hour Total
Suspended Particulates (1-hour TSP, µg/m3), 3 times in every 6
days
24-hour Total
Suspended Particulates (24-hour TSP, µg/m3), daily for 24-hour in
every 6 days Enhanced TSP monitoring (commenced on 24 October 2014)
1-hour Total
Suspended Particulates (1-hour TSP, µg/m3), 3 times in every 3
days
24-hour Total
Suspended Particulates (24-hour TSP, µg/m3), daily for 24-hour in
every 3 days |
ASR5 |
3, 6, 9, 12, 15, 18, 21, 24, 27 and 30 January 2017 |
Pillar Point Fire Station |
Office |
|
AQMS1 |
2, 5, 8, 11, 14, 17, 20, 23 and 26 February 2017 |
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) |
The Action and Limit Levels of the air quality
monitoring is provided in Appendix D. The Event and Action plan is presented in Appendix I.
The schedules for air quality monitoring in the
reporting quarter are provided in Appendix E.
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 Thirty-eighth to
Fortieth 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
2016 to February 2017 |
ASR 1 |
149 |
50
- 301 |
331 |
500 |
ASR 5 |
170 |
56
- 318 |
340 |
500 |
|
AQMS1 |
111 |
47
- 202 |
335 |
500 |
|
ASR6 |
150 |
60
- 282 |
338 |
500 |
|
ASR10 |
91 |
42
- 168 |
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 2016
to February 2017 |
ASR 1 |
79 |
44
- 137 |
213 |
260 |
ASR 5 |
90 |
48
- 161 |
238 |
260 |
|
AQMS1 |
72 |
49
- 113 |
213 |
260 |
|
ASR6 |
79 |
42
- 112 |
238 |
260 |
|
ASR10 |
65 |
44
- 110 |
214 |
260 |
No Action or Limit Level exceedances for 1-hr TSP were
recorded. No Action or Limit Level
exceedances for 24-hr TSP were recorded.
Summary of Exceedances for Air Quality Impact Monitoring in this
Reporting Quarter is detailed in Table 2.15.
In accordance with the Updated EM&A Manual, impact
water quality monitoring was carried out three days per week during the
construction period at nine (9) water quality monitoring stations (Figure 2.2; Table
2.5).
Table 2.5 Locations of Water Quality Monitoring Stations and the
Corresponding Monitoring Requirements
Station ID |
Type |
Coordinates |
*Parameters,
unit |
Depth |
Frequency |
|
|
|
Easting |
Northing |
|
|
|
IS12 |
Impact Station |
813218 |
823681 |
Temperature(°C) pH(pH unit) Turbidity (NTU) Water depth (m) Salinity (ppt) 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. |
IS13 |
Impact
Station |
813667 |
824325 |
|||
IS14 |
Impact
Station |
812592 |
824172 |
|||
IS15 |
Impact
Station |
813356 |
825008 |
|||
CS4 |
Control /
Far Field Station |
810025 |
824004 |
|||
CS6 |
Control /
Far Field Station |
817028 |
823992 |
|||
SR8 |
Sensitive receiver (Gazettal beaches in Tuen Mun) |
816306 |
825715 |
|||
SR9 |
Sensitive receiver |
813601 |
825858 |
|||
SR10A |
Sensitive receiver |
823741 |
823495 |
|||
*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 |
Water Sampler |
Kahlsico Water-Bottle Model 135DW 150 |
Dissolved Oxygen Meter |
YSI Pro 2030 |
pH Meter |
HANNA HI 8314 HANNA HI 9125 |
Turbidity Meter |
HACH 2100Q |
Monitoring Position Equipment |
“Magellan” Handheld GPS Model explorist GC |
DGPS Koden KGP913MK2 (1) |
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.
The schedules for water quality monitoring in the
reporting quarter are provided in Appendix E.
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 Thirty-eighth to Fortieth Monthly EM&A Report.
Since marine works for Phase 2 reclamation commenced
on 27 December 2016, impact water quality monitoring resumed on 27 December
2016. In this reporting quarter, a total
of twenty-seven monitoring events were undertaken in which no Action Level or
Limit Levels of exceedances for impact water quality monitoring was recorded.
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.
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 |
|
|
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.
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 2.8 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 |
805475 |
815913 |
14 |
Start
Point |
817537 |
820220 |
2 |
End
Point |
805477 |
826654 |
14 |
End
Point |
817537 |
824613 |
3 |
Start
Point |
806464 |
819435 |
15 |
Start
Point |
818568 |
820735 |
3 |
End
Point |
806464 |
822911 |
15 |
End
Point |
818568 |
824433 |
4 |
Start
Point |
807518 |
819771 |
16 |
Start
Point |
819532 |
821420 |
4 |
End
Point |
807518 |
829230 |
16 |
End
Point |
819532 |
824209 |
5 |
Start
Point |
808504 |
820220 |
17 |
Start
Point |
820451 |
822125 |
5 |
End
Point |
808504 |
828602 |
17 |
End
Point |
820451 |
823671 |
6 |
Start
Point |
809490 |
820466 |
18 |
Start
Point |
821504 |
822371 |
6 |
End
Point |
809490 |
825352 |
18 |
End
Point |
821504 |
823761 |
7 |
Start
Point |
810499 |
820880 |
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 |
820872 |
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 |
|
|
|
|
12 |
End
Point |
815542 |
824882 |
|
|
|
|
The Action and Limit levels of dolphin impact
monitoring are shown in Appendix D. The Event and Action plan is presented in Appendix I.
The dolphin monitoring schedules for the reporting
period are shown in Appendix E.
A total of 878.35 km of survey effort was conducted,
with 86.5% 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, 340.00 km and 538.35 km of survey effort were conducted from NEL and NWL
survey areas, respectively. The total
survey effort conducted on primary and secondary lines were 632.39 km and 245.96
km, respectively. The survey efforts are
summarized in Appendix H.
A total of 17 groups of 62 Chinese White Dolphins
sightings were recorded during the six sets of surveys
in this reporting quarter. Fourteen of the 17 dolphin sightings were made during on-effort search, and all except
one 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: Dec 1st/6th |
0.00 |
0.00 |
Set 2: Dec 16th/19th |
0.00 |
0.00 |
|
Set 3: Jan 10th/12th |
0.00 |
0.00 |
|
Set 4: Jan 16th
/20th |
0.00 |
0.00 |
|
Set 5: Feb 7th/9th |
0.00 |
0.00 |
|
Set 6: Feb 16th/21st |
0.00 |
0.00 |
|
NWL |
Set 1: Dec 1st/6th |
1.58 |
1.58 |
Set 2: Dec 16th/19th |
5.99 |
22.45 |
|
Set 3: Jan 10th/12th |
0.00 |
0.00 |
|
Set 4: Jan 16th
/20th |
6.27 |
20.38 |
|
Set 5: Feb 7th/9th |
0.00 |
0.00 |
|
Set 6: Feb 16th/21st |
8.99 |
42.71 |
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) |
||
December
2016 – February 2017 |
September
– November 2011 |
December
2016 – February 2017 |
September
– November 2011 |
|
Northeast Lantau |
0.0 |
6.00
± 5.05 |
0.0 |
22.19
± 26.81 |
Northwest Lantau |
3.80
± 3.79 |
9.85
± 5.85 |
14.52
± 17.21 |
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
- 8 individuals per group in North Lantau region during December 2016 to February
2017. 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
2016 – February 2017 |
September
– November 2011 |
|
Overall |
3.65
± 2.37 (n = 17) |
3.72
± 3.13 (n = 66) |
Northeast Lantau |
--- |
3.18
± 2.16 (n = 17) |
Northwest Lantau |
3.65
± 2.37 (n = 17) |
3.92
± 3.40 (n = 49) |
Whilst one limit level exceedance was observed for the
quarterly dolphin monitoring data between December 2016 and February 2017,
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.
Daily marine mammal exclusion
zone was in effect during the period of dredging, reclamation or marine sheet piling
works in open waters under
this Contract. Passive Acoustic
Monitoring (PAM) was also implemented for the detection of marine mammal when dredging,
reclamation or
marine sheet piling works were
carried out outside the daylight hours under this Contract. No sighting of the Indo-Pacific humpback
dolphin Sousa chinensis
(i.e. Chinese White Dolphin) was recorded in January 2017 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 7, 14, 21
and 28 December 2016; 4, 11, 18 and 25 January 2017; 1, 8, 15 and 22 February
2017.
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 |
|
7 December
2016 |
Works
Area - TBM Tunnel Unwanted
chemical drum should be removed. Works
Area - Portion S-A Proper
labels should be provided to the chemical containers. Works
Area - Portion S-C Chemical
drums should be stored in the storage containers. |
Works
Area - TBM Tunnel The
Contractor was reminded to remove the unwanted chemical drum. Works
Area - Portion S-A The
Contractor was reminded to provide proper labels to the chemical containers. Works
Area - Portion S-C The
Contractor was reminded to store the chemical drums in the storage containers. |
|
14
December 2016 |
Works
Area - Portion N-A The
cement bags should be covered with tarpaulin sheets. Chemical
containers should be removed. Works
Area - Portion N-B The
earth bund should be repaired in order to enclose the chemical containers. Works
Area - Portion S-C Drip
tray should be provided to the chemical drums. |
Works
Area - Portion N-A The
Contractor was reminded to cover the cement bags with tarpaulin sheets. The
Contractor was reminded to remove the chemical containers. Works
Area - Portion N-B The
Contractor was reminded to repair the earth bund in order to enclose the
chemical containers. Works
Area - Portion S-C The
Contractor was reminded to provide drip tray to the chemical drums. |
|
21 December
2016 |
Works
Area – TBM tunnel The
cement bags should be covered with tarpaulin sheets. Drip
tray should be provided to the chemical drums. Works
Area – Portion S-B The
fuel pumping tools should be stored properly to prevent oil spillage. Works
Area – Portion S-C The
accumulated concrete slurry on the ground should be removed. |
Works
Area – TBM tunnel The
Contractor was reminded to cover the cement bags with tarpaulin sheets. The
Contractor was reminded to provide drip tray to the chemical drums. Works
Area – Portion S-B The
Contractor was reminded to store the fuel pumping tools properly to prevent
oil spillage. Works
Area – Portion S-C The
Contractor was reminded to remove the accumulated concrete slurry. |
|
28
December 2016 |
Works
Area - Portion N-A The
rubbish trapped in the silt curtain should be removed. Works
Area - Portion S-B Sand
bags should be provided to properly direct wastewater to wastewater treatment
facilities. Works
Area - Portion S-C Chemical
drums should be removed. |
Works
Area - Portion N-A The
Contractor was reminded to remove the rubbish trapped in the silt curtain. Works
Area - Portion S-B The
Contractor was reminded to provide sand bags to properly direct wastewater to
wastewater treatment facilities. Works
Area - Portion S-C The
Contractor was reminded to remove the chemical drums. |
|
4 January
2017 |
Works
Area - Portion N-A Chemical
labels should be provided to the chemical drums. Works
Area - Portion N-B Drip
tray and chemical labels should be provided to the chemical drums. Works
Area - Portion S-C Concrete
sand should be covered by tarpaulin sheet. Water
spraying should be applied during dry conditions. |
Works
Area - Portion N-A The
Contractor was reminded to provide chemical labels to the chemical drums. Works
Area - Portion N-B The
Contractor was reminded to provide drip tray and chemical labels to the
chemical drums. Works
Area - Portion S-C The
Contractor was reminded to covere the concrete sand
by tarpaulin sheet. The
Contractor was reminded to apply water spraying during dry conditions. |
|
11
January 2017 |
Works
Area - Portion N-C Accumulated
waste in the skip should be removed. Works
Area - Portion S-B Drip
tray should be provided to the chemical drums. |
Works
Area - Portion N-C The
Contractor was reminded to remove the accumulated waste in the skip. Works
Area - Portion S-B The
Contractor was reminded to provide drip tray to the chemical drums. |
|
18 January
2017 |
Works
Area – Portion N-A Earth
bund or sand bag barrier should be provided to prevent leakage of muddy
substances to the sea. Chemical
substances should be removed from the site. Works
Area – Portion S-C Drip
tray should be provided to the chemicals. Accumulated
rubbish bags should be removed. |
Works
Area – Portion N-A The
Contractor was reminded to provide earth bund or sand bag barrier to prevent
leakage of muddy substances to the sea. The
Contractor was reminded to remove chemical substances from the site. Works
Area – Portion S-C The
Contractor was reminded to provide drip tray to the chemicals. The
Contractor was reminded to remove accumulated rubbish bags. |
|
25
January 2017 |
Works
Area - Portion N-A Floating
rubbish should be cleared. Works
Area - Portion N-C Drip
trays should be provided for the chemical containers. Works
Area - Portion S-C Water
spraying should be applied more often during dry conditions. Accumulated
general refuse should be cleared. |
Works
Area - Portion N-A The
Contractor was reminded to clear the floating rubbish. Works
Area - Portion N-C The
Contractor was reminded to provide drip trays for the chemical containers. Works
Area - Portion S-C The
Contractor was reminded to apply water spraying more often during dry
conditions. The
Contractor was reminded to clear the accumulated general refuse. |
|
1 February
2017 |
Works
Area - TBM Tunnel Housekeeping
should be maintained. Works
Area - Portion S-C Chemical
waste should be cleared. The
breaker head should be covered with tarpaulin sheet. |
Works
Area - TBM Tunnel The
Contractor was reminded to cover the cement bag properly. Works
Area - Portion S-C The
Contractor was reminded to clear the chemical waste. The
Contractor was reminded to cover the breaker head with tarpaulin sheet. |
|
8
February 2017 |
Works
Area - Portion N-B Water
spraying should be applied during dry conditions. Drip
tray and chemical labels should be provided to the chemicals Works
Area - Portion S-B Drip
tray should be provided to the chemical drum. |
Works
Area - Portion N-B The
Contractor was reminded to apply water spraying during dry conditions. The
Contractor was reminded to provide drip tray and chemical labels to the
chemicals. Works
Area - Portion S-B The
Contractor was reminded to provide drip tray to the chemical drum. |
|
15 February
2017 |
Works
Area –Portion N-C Muddy
substance trapped in the surface channel should be removed. Drip
tray and chemical labels should be provided to the chemicals. Works
Area – Portion N-A Muddy
substances and rubbish should be removed. Sandbags should be provided to
prevent leakage of wasteater to the sea. Works
Area - Portion S-A Drip
tray and chemical labels should be provided to the chemicals.. Accumulated
rubbish bags should be removed. |
Works
Area –Portion N-C The
Contractor was reminded to remove the muddy substance trapped in the surface
channel. The
Contractor was reminded to provide drip tray and chemical labels to the
chemicals. Works
Area – Portion N-A The
Contractor was reminded to remove the muddy substances and rubbish and
provide sandbags to prevent leakage of wastewater to the sea. Works
Area - Portion S-A The
Contractor was reminded to provide drip tray and chemical labels to the chemicals. The
Contractor was reminded to remove the accumulated rubbish bags. |
|
22
February 2017 |
Works
Area - Portion N-A Drip
tray and chemical labels should be provided to the chemicals. Works
Area - Portion N-B Muddy
substance and water should be removed. Works
Area - Portion S-A Chemical
labels should be provided to the chemicals. Cement
surface runoff should be avoided. |
Works
Area - Portion N-A The
Contractor was reminded to provide drip tray and chemical labels to the
chemicals. Works
Area - Portion N-B The
Contractor was reminded to remove the muddy substance and water. Works
Area - Portion S-A The
Contractor was reminded to provide chemical labels to the chemicals. The
Contractor was reminded to avoid cement surface runoff. |
|
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) and recyclable materials.
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 |
|
||||||
December 2016 |
25,662 |
0 |
288 |
0 |
0 |
550 |
0 |
|
January 2017 |
60,781 |
0 |
673 |
0 |
3,400 |
2,750 |
8,200 |
|
February 2017 |
17,367 |
0 |
340 |
200 |
0 |
550 |
0 |
|
Total |
103,810 |
0 |
1,301 |
200 |
3,400 |
3,850 |
8,200 |
|
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.
Table 2.14 Summary of Environmental Licensing and Permit Status
License/ Permit |
License or Permit No. |
Date of Issue |
Date of Expiry |
License/ Permit Holder |
Remarks |
Environmental
Permit |
EP-354/2009/D |
13
March 2015 |
Throughout
the Contract |
HyD |
Application for VEP on 3 March 2015 to supersede
EP-354/2009/C |
Construction
Dust Notification |
363510 |
19
August 2013 |
Throughout
the Contract |
DBJV |
Northern Landfall |
Construction
Dust Notification |
403620 |
10 June 2016 |
Throughout
the Contract |
DBJV |
Southern Landfall |
Chemical
Waste Registration |
5213-422-D2516-01 |
10
September 2013 |
Throughout
the Contract |
DBJV |
Northern Landfall |
Chemical
Waste Registration |
5213-951-D2591-01 |
25 May 2016 |
Throughout
the Contract |
DBJV |
Southern Landfall |
Chemical
Waste Registration |
5213-422-D2516-02 |
18 January 2017 |
Throughout
the Contract |
DBJV |
Northern Landfall |
Construction
Waste Disposal Account |
7018108 |
28
August 2013 |
Throughout
the Contract |
DBJV |
Waste disposal in Contract No. HY/2012/08 |
Construction
Waste Disposal Account |
7021715 |
12 January 2017 |
12 April 2017 |
DBJV |
Vessel disposal |
Waste
Water Discharge License |
WT00017707-2013 |
18
November 2013 |
30
November 2018 |
DBJV |
For site WA18 |
Waste
Water Discharge License |
WT00019248-2014 |
5
June 2014 |
30
June 2019 |
DBJV |
For site Portion N6 and Reclamation Area E |
Waste
Water Discharge License |
WT00025944-2016 |
15 December 2016 |
31 December 2021 |
DBJV |
Southern Landfall |
Marine Dumping Permit |
EP/MD/17-103 |
16 December 2016 |
13 June 2017 |
DBJV |
Northern Landfall |
Marine Dumping Permit |
EP/MD/17-121 |
16 December 2016 |
15 January 2017 |
DBJV |
Northern Landfall |
Marine Dumping Permit |
EP/MD/17-164 |
16 January 2017 |
15 February 2017 |
DBJV |
Northern Landfall |
Construction
Noise Permit |
GW-RW0644-16 |
30 November 2016 |
29
May 2017 |
DBJV |
For
Urmston Road in front of Pillar Point |
Construction
Noise Permit |
GW-RW0666-16 |
13 December 2016 |
12
June 2017 |
DBJV |
For
site WA23A+B |
Construction Noise Permit |
GW-RW0533-16 |
29
September 2016 |
28 March 2017 |
DBJV |
For Portion N6 |
Construction Noise Permit |
GW-RS0860-16 |
25 August 2016 |
24 February 2017 |
DBJV |
For Southern Landfall |
Notes: |
|
|
|
|
|
HyD
= Highways Department DBJV
= Dragages – Bouygues Joint Venture VEP
= Variation of Environmental Permit |
In response to the site audit findings, the
Contractors carried out all corrective actions.
A summary of the Implementation Schedule of
Environmental Mitigation Measures (EMIS) is presented in Appendix C. The necessary mitigation measures relevant to
this Contract were implemented properly.
For
air quality impact monitoring, a total of thirty monitoring events were
undertaken in which no Action Level or Limit Level exceedances for 1-hr TSP; no
Action Level exceedances or Limit Level exceedances for 24-hr TSP were recorded
in this reporting quarter (Table 2.15).
Table 2.15 Summary of
Exceedances for Air Quality Impact Monitoring in this Reporting Quarter
Station |
Exceedance
Level |
Date of
Exceedances |
Number of
Exceedances |
||
1-hr TSP |
24-hr TSP |
1-hr TSP |
24-hr TSP |
||
AQMS1 |
Action Level |
- |
- |
0 |
0 |
Limit Level |
- |
- |
0 |
0 |
|
ASR1 |
Action Level |
- |
- |
0 |
0 |
Limit Level |
- |
- |
0 |
0 |
|
ASR5 |
Action Level |
- |
- |
0 |
0 |
Limit Level |
- |
- |
0 |
0 |
|
ASR6 |
Action Level |
- |
- |
0 |
0 |
Limit Level |
- |
- |
0 |
0 |
|
ASR10 |
Action Level |
- |
- |
0 |
0 |
Limit Level |
- |
- |
0 |
0 |
|
Total number of Action level Exceedances: |
0 |
0 |
|||
Total number of Limit level Exceedances: |
0 |
0 |
For marine water quality impact monitoring, a total of
twenty-seven monitoring events were undertaken in which no Action Level or
Limit Level exceedances were recorded (Table
2.17). In addition, the construction
impact on depth-averaged SS was assessed to compare the quarterly mean values
of depth-averaged SS with the relevant ambient mean values. Results showed that the quarterly mean values
of depth-averaged SS at all monitoring stations are well below the ambient mean
values (Table 2.16), thus no further
action is required in accordance with the Updated EM&A Manual.
Table 2.16 Comparison between Quarterly Mean and Ambient Mean Values of
Depth-averaged Suspended Solids
Station |
Baseline Mean |
Ambient Mean (a) |
Quarterly
Mean (December 2016 to February 2017) |
|||
Mid-ebb |
Mid-flood |
Mid-ebb |
Mid-flood |
Mid-ebb |
Mid-flood |
|
CS4 |
10.2 |
9.0 |
13.3 |
11.7 |
10.1 |
9.8 |
CS6 |
10.9 |
11.7 |
14.1 |
15.2 |
9.9 |
9.7 |
IS12 |
9.2 |
9.5 |
12.0 |
12.3 |
9.6 |
9.2 |
IS13 |
10.0 |
10.5 |
13.0 |
13.7 |
9.7 |
9.3 |
IS14 |
10.4 |
9.7 |
13.5 |
12.6 |
8.7 |
8.4 |
IS15 |
9.6 |
11.0 |
12.5 |
14.2 |
9.4 |
9.5 |
SR10A |
10.3 |
10.2 |
13.3 |
13.3 |
8.7 |
8.6 |
SR8 |
10.1 |
11.3 |
13.1 |
14.7 |
8.7 |
8.5 |
SR9 |
8.8 |
9.9 |
11.4 |
12.8 |
8.8 |
8.4 |
Grand
Total |
10.0 |
10.3 |
13.0 |
13.4 |
9.3 |
9.0 |
Notes: |
||||||
(a) Ambient mean value is defined as a 30%
increase of the baseline mean value |
Table 2.17 Summary of Exceedances for Marine Water Quality Impact
Monitoring in this Reporting Quarter
Station |
Exceedance
Level (a) |
DO (Surface
and Middle) |
DO (Bottom) |
Turbidity
(depth-averaged) |
SS
(depth-averaged) |
||||
Mid-ebb |
Mid-flood |
Mid-ebb |
Mid-flood |
Mid-ebb |
Mid-flood |
Mid-ebb |
Mid-flood |
||
CS4 |
AL |
- |
- |
- |
- |
- |
- |
- |
- |
LL |
- |
- |
- |
- |
- |
- |
- |
- |
|
CS6 |
AL |
- |
- |
- |
- |
- |
- |
- |
- |
LL |
- |
- |
- |
- |
- |
- |
- |
- |
|
IS12 |
AL |
- |
- |
- |
- |
- |
- |
- |
- |
LL |
- |
- |
- |
- |
- |
- |
- |
- |
|
IS13 |
AL |
- |
- |
- |
- |
- |
- |
- |
- |
LL |
- |
- |
- |
- |
- |
- |
- |
- |
|
IS14 |
AL |
- |
- |
- |
- |
- |
- |
- |
- |
LL |
- |
- |
- |
- |
- |
- |
- |
- |
|
IS15 |
AL |
- |
- |
- |
- |
- |
- |
- |
- |
LL |
- |
- |
- |
- |
- |
- |
- |
- |
|
SR8 |
AL |
- |
- |
- |
- |
- |
- |
- |
- |
LL |
- |
- |
- |
- |
- |
- |
- |
- |
|
SR9 |
AL |
- |
- |
- |
- |
- |
- |
- |
- |
LL |
- |
- |
- |
- |
- |
- |
- |
- |
|
SR10 |
AL |
- |
- |
- |
- |
- |
- |
- |
- |
LL |
- |
- |
- |
- |
- |
- |
- |
- |
|
Total AL Exceedances: |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
Total LL Exceedances: |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
Notes: |
|||||||||
(a) AL = Action Level; LL = Limit Level |
One (1) Limit Level exceedance was observed for the
quarterly dolphin monitoring data between December 2016 and February 2017,
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 2.3.
One
(1) environmental complaint case regarding hammering Noise from unidentified
Sources was referred by
EPD on 14 December 2016.
One
(1) environmental complaint case regarding sewage discharge at the east of the
artificial island of the Hong Kong – Zhuhai–Macao Bridge was referred by IEC on 16 January
2017. One (1) environmental complaint
case regarding trespassing of construction vessels in Brothers Marine Park was
referred by IEC on 17 January 2017.
One
(1) environmental complaint case regarding muddy water discharge at the site
area near Ho Yeung Street was referred by EPD on 14 February 2017.
The
complaint investigation reports are provided in Appendix J.
No notification of summons or successful prosecution
recorded in the reporting period.
Statistics on complaints, notifications of summons and
successful prosecutions are summarized in Appendix J.
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 |
Marine-based Works |
·
Construction of Vertical Seawall at Portion N-A; and ·
Band drain and Filling works at Portion N-A Land-based
Works ·
Box Culvert Extension at Works Area – Portion N-A; ·
Construction of North Ventilation Building – Portion
N-C; ·
Construction of Cross Passage Tympanum – TBM tunnel; ·
Cross Passage Lining Installation – TBM Tunnel; ·
Excavation of Sub-sea Tunnel – TBM tunnel; ·
Corbel Construction – TBM Tunnel; ·
Sub-sea Tunnel Gallery Installation – TBM tunnel; ·
Jet Grouting, CSM Ground Treatment and Diaphragm
Wall Construction – Portion S-A. |
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 quaity and waste management issues.
Impact monitoring for air quality, marine water
quality and marine ecology (include dolphin monitoring) are scheduled to be
conducted for the next reporting period.
This Thirteen Quarterly EM&A Report presents the
findings of the EM&A activities undertaken during the period from 1 December
2016 to 28 February 2017, 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. No Action or Limit Level exceedances for 1-hr
TSP were recorded. No Action or Limit
Level exceedances for 24-hr TSP were record.
A total of 17 groups of 62 Chinese White Dolphins
sightings were recorded during the six sets of surveys
in this reporting quarter. Fourteen of the 17 dolphin sightings were made during on-effort search, and all except
one on-effort dolphin sightings were made on primary lines. Whilst one limit level exceedance was
observed for the quarterly dolphin monitoring data between December 2016 and February 2017,
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.
Twelve 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.
One
(1) environmental complaint case regarding hammering Noise from unidentified
Sources was referred by
EPD on 14 December 2016.
One
(1) environmental complaint case regarding sewage discharge at the east of the
artificial island of the Hong Kong – Zhuhai–Macao Bridge was referred by IEC on 16 January
2017. One (1) environmental complaint
case regarding trespassing of construction vessels in Brothers Marine Park was
referred by IEC on 17 January 2017.
One
(1) environmental complaint case regarding muddy water discharge at the site
area near Ho Yeung Street was referred by EPD on 14 February 2017.
No notification of summons or successful prosecution
recorded in 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.