table
of Contents
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 Post-translocation
coral monitoring
2.5 EM&A
Site Inspection
2.6 Waste
Management Status
2.7 Environmental
Licenses and Permits
2.8 Implementation
Status of Environmental Mitigation Measures
2.9 Summary
of Exceedances of the Environmental Quality Performance Limit
2.10 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 |
|
Appendix B |
|
Appendix C |
Environmental
Mitigation And Enhancement Measure Implementation Schedules (EMIS) |
Appendix D |
|
Appendix E |
|
Appendix F |
|
Appendix G |
|
Appendix H |
|
Appendix I |
|
Appendix J |
|
Appendix K |
|
Appendix L |
|
Appendix M |
Under Contract No. HY/2012/08,
Dragages ¡V 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 ¡V 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. ENVIRON Hong Kong Ltd. was employed by HyD as the Independent Environmental Checker (IEC) and
Environmental Project Office (ENPO).
Another application for variation of environmental
permit (VEP) (EP-354/2009/B) was
granted on 28 January 2014.
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 Tenth Monthly EM&A report presenting the EM&A works carried out
during the period from 1 to 31 August 2014 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, major activities in the reporting period included:
Marine-based
Works
¡P
Dredging at Portion N-C;
¡P
Reclamation filling at Portion N-B;
¡P
Construction of Vertical Seawall and Sloping Seawall
at Portion N-C;
¡P
Marine Sheet Piling for Box Culvert extension at
Portion N-A;
¡P
Box Culvert extension ¡V Backfilling and Tie Rod
Installation at Portion N-A; and,
¡P
Predrilling for Box Culvert Foundation at Portion N-A.
Land-based
Works
¡P
CLP Substation utilities works at Portion N6;
¡P
Pile Cap Construction at Portion N6;
¡P
Vibro-Compaction
at Portion N-A
¡P
Construction of temporary access at Reclamation Works
Area ¡V Portion N-A; and,
¡P
Diaphragm Wall Construction at Reclamation Works Area
¡V Portion N-A.
A summary of
monitoring and audit activities conducted in the reporting period is listed
below:
24-hour TSP Monitoring 5
sessions
1-hour TSP Monitoring 5
sessions
Impact Water
Quality Monitoring 13
sessions
Impact Dolphin
Monitoring 2
sessions
Joint
Environmental Site Inspection 4
sessions
Implementation of Marine Mammal Exclusion Zone
Daily
marine mammal exclusion zone was in effect during the period of marine works
under this Contract. Passive
Acoustic Monitoring (PAM) was also implemented for the detection of marine
mammal when marine works are carried out outside the daylight hours under this
Contract. No sighting of the
Indo-Pacific humpback dolphin Sousa chinensis was recorded in August 2014 during the
exclusion zone monitoring.
Post-Translocation Coral Monitoring
No
Post-Translocation Coral Monitoring was undertaken during this reporting month.
Summary of
Breaches of Action/Limit Levels
Breaches of Action and Limit Levels for Air Quality
No Action Level
or Limit Level of air quality exceedances were recorded in the air quality
monitoring of this reporting month.
Breaches of Action and Limit Levels for Water Quality
No Action Level
or Limit Level of water quality exceedances were recorded in the water quality
monitoring of this reporting month.
Dolphin Monitoring
Whilst two
Action Level exceedances and no Limit Level exceedances were observed for the
quarterly dolphin monitoring data between June and August 2014, 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 month. Due
to monthly variation in dolphin occurrence within the study area, it would be
more appropriate to draw conclusion on whether any unacceptable impacts on dolphins have been detected
related to the construction activities of the TM-CLKL Northern Connection
Sub-sea 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
There was no
reporting change required in the reporting period.
Upcoming Works for the Next Reporting Month
Works to be
undertaken in the next monitoring period of September 2014 include the
following:
Marine-based
Works
¡P
Reclamation filling at Portion N-B;
¡P
Vertical Seawall and Sloping Seawall construction at
Portion N-C;
¡P
Box Culvert extension ¡V Backfilling & Tie Rod
Installation at Portion N-A;
¡P
Marine Sheet Piling for Box Culvert extension at
Portion N-A; and,
¡P
Predrilling
for Box Culvert Foundation at Portion N-A.
Land-based
Works
¡P
CLP Substation utilities works at Portion N6;
¡P
Diaphragm Wall Construction at Reclamation Works Area
¡V Portion N-A;
¡P
Vibro-Compaction
at Portion N-A;
¡P
Launching Shaft Excavation at Portion N-A;
¡P
Construction of temporary access at Reclamation Works
Area ¡V Portion N-A; and,
¡P
Pile Cap Construction at Portion N6.
Future Key
Issues
Potential
environmental impacts arising from the above upcoming construction activities
in the next reporting month of September 2014 are expected to be mainly associated
with dust, marine water quality, marine ecology and waste management.
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 ¡V
Zhuhai ¡V Macao Bridge (HZMB). In
order to cope with the anticipated traffic demand, two new road sections
between NWNT and North Lantau ¡V Tuen Mun ¡V 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. Another
application for VEP (EP-354/2009/B) was granted on 28 January 2014.
Under
Contract No. HY/2012/08,
Dragages ¡V 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). 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
16/HZMB |
Kenneth Lee |
2762
4996 |
3188
6614 |
SOR (AECOM Asia
Company Limited) |
Chief
Resident Engineer |
Edwin
Ching Andrew
Westmoreland |
2293
6388 2293
6360 |
2293
6300 2293
6300 |
ENPO / IEC (ENVIRON
Hong Kong Ltd.) |
ENPO Leader |
Y.H. Hui |
3465 2888 |
3465 2899 |
IEC |
Dr. F.C. Tsang |
3465 2828 |
3465 2899 |
|
Contractor (Dragages ¡V
Bouygues Joint Venture) |
Environmental
Manager |
C.F. Kwong |
2293
7322 |
2670
2798 |
Environmental
Officer 24-hour
complaint hotline |
Bryan Lee Rachel Lam |
2293
7323 2293
7342 |
2670
2798 |
|
ET (ERM-HK) |
ET Leader |
Jovy Tam |
2271 3113 |
2723 5660 |
Table 1.2 Summary
of Construction Activities Undertaken during the Reporting Period
Construction Activities Undertaken |
Marine-based Works |
¡P
Dredging at Portion N-C; |
¡P
Reclamation filling at Portion N-B; |
¡P
Construction of Vertical Seawall and Sloping Seawall
at Portion N-C; |
¡P
Marine Sheet Piling for Box Culvert extension at
Portion N-A; |
¡P
Box Culvert extension ¡V Backfilling and Tie Rod
Installation at Portion N-A; and, |
¡P
Predrilling for Box Culvert Foundation at Portion
N-A |
Land-based Works |
Portion N6 |
¡P
CLP Substation utilities works; and |
¡P
Pile Cap Construction; Reclamation
Area ¡V Portion N-A ¡P
Vibro-Compaction; ¡P
Construction of temporary access; and, ¡P
Diaphragm Wall Construction. |
Figure 1.2 Locations
of Construction Activities ¡V August 2014
|
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
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.
High volume
samplers (HVSs) were used to carry out the 1-hour and 24-hour TSP monitoring on
4, 8, 14, 20 and 26 August 2014 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 |
4,
8, 14, 20 and 26 August 2014 |
Tuen Mun Fireboat Station |
Office |
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 |
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: Weather Wizard III (S/N: WE90911A30) |
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 K.
The schedule
for air quality monitoring in August 2014 is provided in Appendix F.
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 |
144 |
88
¡V 210 |
331 |
500 |
ASR5 |
127 |
65
¡V 239 |
340 |
500 |
AQMS1 |
84 |
48
¡V 129 |
335 |
500 |
ASR6 |
127 |
60
¡V 224 |
338 |
500 |
ASR10 |
71 |
43
¡V 99 |
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 |
84 |
54
- 105 |
213 |
260 |
ASR5 |
74 |
58
- 92 |
238 |
260 |
AQMS1 |
46 |
38
- 56 |
213 |
260 |
ASR6 |
56 |
43
- 67 |
238 |
260 |
ASR10 |
47 |
40
- 55 |
214 |
260 |
The weather
condition during the monitoring period varied from sunny to cloudy. The major dust sources in the reporting
period include construction activities under the Contract as well as nearby
traffic emissions.
A total of five
monitoring events were undertaken in which no Action Level or Limit Level
exceedances of 1-hr TSP and 24-TSP was recorded in this reporting month.
Meteorological
information collected at the ASR5, including wind speed and wind direction, is provided
in Appendix H.
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(¢XC)
pH(pH unit)
Turbidity (NTU)
Water depth (m)
Salinity (ppt)
DO (mg/L and % of saturation) ¡P
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. Copies
of the calibration certificates are attached in Appendix E.
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 |
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 K.
The schedule
for water quality monitoring in August 2014 is provided in Appendix F.
During this
reporting period, major marine works included dredging at Portion N-C and
reclamation filling at Portion N-B.
A closed grab dredger was used and silt curtains were deployed during
dredging works. The level of
dredging activities was within the working rate described in the EP and the approved
EIA Report. In addition,
reclamation filling was undertaken between the 200 m of leading seawalls using
filling materials specified in the EP and the approved EIA Report with a single
layer silt curtain being deployed as a precautionary measure to reduce
dispersion of suspended solids. It
is useful to note that heavy marine traffic (not associated with the Project)
was commonly observed nearby the Project site and its vicinity.
Impact water
quality monitoring was conducted at all designated monitoring stations in the
reporting month. Results and
graphical presentations of impact water quality monitoring are presented in Appendix I.
In this
reporting period, a total of thirteen 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 summarises the equipment
used for the impact dolphin monitoring.
Table 2.7 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 |
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 2.3. 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 |
814577 |
13 |
Start Point |
816506 |
819480 |
1 |
End Point |
804671 |
831404 |
13 |
End Point |
816506 |
824859 |
2 |
Start Point |
805475 |
815457 |
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 |
820690 |
19 |
Start Point |
822513 |
823268 |
7 |
End Point |
810499 |
824613 |
19 |
End Point |
822513 |
824321 |
8 |
Start Point |
811508 |
820847 |
20 |
Start Point |
823477 |
823402 |
8 |
End Point |
811508 |
824254 |
20 |
End Point |
823477 |
824613 |
9 |
Start Point |
812516 |
820892 |
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 |
818449 |
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 impact dolphin monitoring are shown in Appendix D. The Event and Action plan is presented
in Appendix K.
Dolphin
monitoring was carried out on 5, 6, 15 and 19 August 2014. The dolphin monitoring schedule for the
reporting month is shown in Appendix F.
A total of 297.42
km of survey effort was collected, with 94.1% of the total survey effort being
conducted under favourable weather conditions (ie Beaufort Sea State 3 or below with good visibility) in August
2014. Amongst the two areas, 115.50
km and 181.92 km of survey effort were collected from NEL and NWL survey areas,
respectively. The total survey
effort conducted on primary and secondary lines were 213.22 km and 84.20 km,
respectively. The survey efforts are
summarized in Appendix J.
A total of 13 groups of 48 Chinese
White Dolphin sightings were recorded
during the two sets
of surveys in August 2014. All
sighting were made in NWL during the two sets of surveys in August 2014, while no
dolphin was sighted in NEL. Ten of
the 13 sightings were made on primary lines during on-effort search, and none
of the dolphin groups was associated with operating fishing vessel.
None of the sightings was made in the vicinity of
the TM-CLKL Northern Connection Sub-sea Tunnel Section. The distribution of
dolphin sightings during the reporting month is shown in Figure 2.4.
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 August 2014 with the
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: August 5th/6th |
0.0 |
0.0 |
Set 2: August 15th/19th |
0.0 |
0.0 |
|
NWL |
Set 1: August 5th/6th |
5.6 |
22.5 |
Set 2: August 15th/19th |
9.7 |
40.4 |
Note:
Dolphin Encounter Rates
are deduced from the Two Sets of Surveys (Two Surveys in Each Set) in August 2014
in Northeast (NEL) and Northwest Lantau (NWL)
Table 2.10 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 |
7.5 |
7.9 |
30.8 |
29.1 |
Note: Overall dolphin encounter rates (sightings per
100 km of survey effort) from all four surveys are conducted in August 2014 on
primary lines only as well as both primary lines and secondary lines in
Northeast and Northwest Lantau.
The average
group size of Chinese White Dolphins in August 2014 was 3.69 individuals per
group. Almost all dolphin groups
were composed of 1-5 animals, with only three larger groups of 6-8 animals
sighted near Lung Kwu Chau.
Whilst two
Action Level exceedances (one Action Level exceedance for Northeast Lantau
social cluster; one Action Level exceedance for Northwest Lantau social
cluster) and no Limit Level exceedances were observed for the quarterly dolphin
monitoring data between June and August 2014, 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 month. The observed exceedances will be further
investigated in the Third Quarterly
EM&A Report for June to August 2014.
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 related to the construction activities of this Project 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.
Daily 250 m marine
mammal exclusion zone monitoring was undertaken during the period of marine
works under this Contract. Passive Acoustic Monitoring (PAM) was also
implemented for the detection of marine mammal when marine works are 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 August 2014 during the exclusion zone monitoring.
No
Post-Translocation Coral Monitoring was undertaken during this reporting
month.
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 6, 13, 20 and 27 August 2014.
Key
observations and recommendations during the site inspections in this reporting
period are summarized in Table 2.11.
Table 2.11 Specific
Observations and Recommendations during the Weekly Site Inspection in this
Reporting Month
Inspection Date |
Observations |
Recommendations/ Remarks |
6 August
2014 |
Reclamation
Works Area - Portion N-A Excess
muddy water should be cleared in the wheel washing area. Accumulated
general refuse should be cleared regularly. |
Reclamation
Works Area - Portion N-A The
Contractor was reminded to clear the excess muddy water on a regular basis. The
Contractor was reminded to clear the general refuse regularly. |
13
August 2014 |
Marine Works Area - Portion N-A
Accumulated general refuse near the marine works area should be
cleared. Reclamation Works Area - Portion N-A
General site maintenance should be kept more regularly. |
Marine Works Area - Portion N-A
The Contractor was reminded to clear the accumulated general refuse. Reclamation Works Area - Portion N-A
The Contractor was reminded to maintain site tidiness more regularly. |
20 August
2014 |
Reclamation
Works Area - Portion N-A Sedimentation
tank should be in place to treat the excess muddy water. |
Reclamation
Works Area - Portion N-A The
Contractor was reminded to provide sedimentation tank with sufficient
capacity. |
27
August 2014 |
Reclamation
Works Area - Portion N-A Sandy
materials near the seawall should be cleared. Reclamation
Works Area - Portion N-B The
Contractor was reminded to clear the excess muddy water after heavy
rainstorm. |
Reclamation
Works Area - Portion N-A The
Contractor was reminded to clear the sandy materials near the seawall. Reclamation
Works Area - Portion N-B The
Contractor was reminded to clear the excess muddy water after heavy
rainstorm. |
The Contractor
has rectified all of the observations as identified during environmental site
inspections in the reporting month.
The Contractor
had submitted application form for registration as chemical waste producer under
the Contract. Sufficient numbers of
receptacles were available for general refuse collection and sorting.
Wastes
generated during this reporting period include mainly construction wastes
(inert and non-inert), imported fill and marine sediments (Category L and
Category M). Reference has been
made to the waste flow table prepared by the Contractor (Appendix M). The quantities of different types of
wastes are summarized in Table 2.12.
Table 2.12 Quantities
of Different Waste Generated in the Reporting Month
Month/Year |
Inert Construction Waste (a)
(tonnes) |
Imported Fill (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) |
|||||||
August 2014 |
12,728 |
623,029 |
0 |
22 |
0 |
0 |
12,100 |
0 |
Notes: |
||||||||
(a) Inert
construction wastes include hard rock and large broken concrete, and materials
disposed as public fill. (b) Non-inert
construction wastes include general refuse disposed at landfill. (c) Recyclable
materials include metals, paper, cardboard, plastics, timber and others. |
The Contractor
was advised to properly maintain on site C&D materials and waste
collection, sorting and recording system, dispose of C&D materials and
wastes at designated ground and maximize reuse/ recycle of C&D materials
and wastes. The Contractor was also
reminded to properly maintain the site tidiness and dispose of the wastes
accumulated on site regularly and properly.
For chemical
waste containers, the Contractor was reminded to treat properly and store temporarily
in designated chemical waste storage area on site in accordance with the Code
of Practice on the Packaging, Labelling and Storage of Chemical Wastes.
The status of
environmental licensing and permit is summarized in Table 2.13 below.
Table 2.13 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/B |
28 January 2014 |
Throughout the Contract |
HyD |
Application for VEP on 20 January 2014 to replace EP-354/2009/A |
Construction Dust Notification |
363510 |
19 August 2013 |
Throughout the Contract |
DBJV |
- |
Chemical Waste Registration |
5213-422-D2516-01 |
10 September 2013 |
Throughout the Contract |
DBJV |
- |
Construction Waste Disposal Account |
7018108 |
19 August 2013 |
Throughout the Contract |
DBJV |
Waste disposal in Contract No. HY/2012/08 |
Waste Water Discharge License |
WT00017707-2013 |
18 November 2013 |
30 November 2018 |
DBJV |
For site WA18 |
Waste Water Discharge License |
WT00018433-2014 |
5 June 2014 |
30 June 2019 |
DBJV |
For site Portion N6 and Reclamation Area E |
Construction Noise Permit |
GW-RS0362-14 |
11 May 2014 |
10 November 2014 |
DBJV |
For site WA23 |
Construction Noise Permit |
GW-RW0223-14 |
29 March 2014 |
28 September 2014 |
DBJV |
For Portion N6 |
Construction Noise Permit |
GW-RW0550-14 |
25 July 2014 |
24 January 2015 |
DBJV |
For Dredging and Reclamation Works |
Marine Dumping Permit |
EP/MD/15-006 |
1 May 2014 |
31 October 2014 |
DBJV |
For Type 1 |
Marine Dumping Permit |
EP/MD/15-061 |
1 August 2014 |
31 August 2014 |
DBJV |
For Type 1 (Dedicated site) and Type
2 |
Notes: |
|||||
HyD = Highways
Department DBJV = Dragages ¡V
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.
No Action Level
or Limit Level exceedances were recorded in the air quality monitoring of this
reporting month.
No Action Level
or Limit Level exceedances were recorded in the water quality monitoring of
this reporting month.
Two Action
Level exceedances and no Limit Level exceedances were recorded for the
quarterly dolphin monitoring data between June 2014 and August 2014. The observed exceedances will be further
investigated in the Third Quarterly
EM&A Report for June 2014 to August 2014.
Cumulative
statistics are provided in Appendix L.
The
Environmental Complaint Handling Procedure is provided in Figure 2.5.
No complaints,
notification of summons and prosecution were received in the reporting period.
Statistics on
complaints, notifications of summons and successful prosecutions are summarized
in Appendix L.
As informed by
the Contractor, the major works for the Project in September 2014 are
summarized in Table 3.1.
Table
3.1 Construction
Works to Be Undertaken in the Coming Month
Works to be undertaken |
Marine-based Works |
¡P
Reclamation filling at Portion N-B |
¡P
Vertical Seawall and Sloping Seawall construction at
Portions N-C |
¡P
Box Culvert extension ¡V Backfilling & Tie Rod
Installation at Portion N-A |
¡P
Marine Sheet Piling for Box Culvert extension at
Portion N-A |
¡P
Predrilling
for Box Culvert Foundation at Portion N-A |
Land-based Works |
Portion N6 |
¡P
CLP Substation utilities works |
¡P
Pile
Cap Construction Reclamation
Works Area ¡V Portion N-A ¡P
Diaphragm Wall Construction ¡P
Vibro-Compaction ¡P
Launching Shaft Excavation ¡P
Construction of Temporary Access |
Potential
environmental impacts arising from the above upcoming construction activities in
the next reporting month of September 2014 are mainly associated with dust,
marine water quality, marine ecology and waste management issues.
The tentative
schedule for environmental monitoring in September 2014 is provided in Appendix F.
This Tenth Monthly
EM&A Report presents the findings of the EM&A activities undertaken
during the period from 1 to 31 August 2014, in accordance with the Updated
EM&A Manual and the requirements of EP-354/2009/B.
Air quality
(including 1-hour TSP and 24-hour TSP), water quality and dolphin monitoring were
carried out in this reporting month. No Action Level or Limit Level
exceedances were recorded in the air quality monitoring of this reporting
month. No Action
Level or Limit Level exceedances were recorded in the water quality monitoring of
this reporting month.
Nevertheless, the Contractor was reminded to ensure all dust mitigation
measures are implemented at the construction site and the proper deployment of
silt curtains during the period of marine works under this Contract.
A total of thirteen
(13) groups
of forty-eight (48) Chinese White Dolphin sightings
were recorded during the two sets
of surveys in August 2014. All sightings were made in NWL
during the two sets of surveys in August 2014. Ten
of the 13 sightings were made on primary lines during on-effort search, and
none of the dolphin groups was associated with operating fishing
vessel. Whilst two
Action Level exceedances and no Limit Level exceedances were observed for the
quarterly dolphin monitoring data between June and August 2014, 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 month.
Environmental
site inspection was carried out four (4) times in August 2014. Recommendations on remedial actions recommended
for the deficiencies identified during the site audits were properly
implemented by the Contractor.
No
non-compliance event was recorded during the reporting period.
No complaint
and summons/ prosecution was received during the
reporting period.
No summons/
prosecution was received during the reporting period.
The ET will
keep track on the construction works to confirm compliance of environmental requirements
and the proper implementation of all necessary mitigation measures.