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 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 Quarter
3.2 Key
Issues for the Coming Quarter
3.3 Monitoring
Schedule for the Coming Quarter
4 Conclusions and recommendations
Appendix A
|
Project Organization
|
Appendix B
|
Three Months Programme
|
Appendix C
|
Environmental Mitigation And Enhancement Measure
Implementation Schedules (EMIS)
|
Appendix D
|
Action And Limit Levels
|
Appendix E
|
Monitoring Schedule
|
Appendix F
|
Air Quality Monitoring Results
|
Appendix G
|
Meteorological Data
|
Appendix H
|
Water Quality Monitoring Results
|
Appendix I
|
Impact Dolphin Monitoring
|
Appendix J
|
Event And Action Plan
|
Appendix K
|
Cumulative Statistics On Exceedance And Complaint
|
Appendix L
|
Waste Flow Table
|
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 First
Quarterly EM&A report presenting the EM&A works carried out during the
period from 1 November 2013 to 28 February 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, the major activities in the reporting quarter included:
Marine-based Works
¡P
Dredging
¡P
Removal of existing seawall
¡P
Placement of rock grade
¡P
Delivery of 1,946 seawall blocks
¡P
Vertical seawall construction
¡P
Sloping seawall construction
¡P
Marine sheet piling for box culvert extension
¡P
Predrilling for box culvert foundation
¡P
Temporary pontoon installation at River Trade Terminal
(RTT)
Land-based Works
Site WA 23
¡P
Sorting of rock material
Site WA 18
¡P
Completion of chain-link fence, site hoarding works,
site formation works
¡P
Site office structural works
¡P
Temporary outdoor substation civil works
¡P
Site office construction
Portion N6
¡P
CLP Substation Superstructure
¡P
CLP Substation Footing & underground utilities
works (Portion N6)
¡P
CLP Substation structure works
¡P
CLP Substation E&M works
A summary of
monitoring and audit activities conducted in the reporting period is listed
below:
24-hour TSP Monitoring 23
sessions
1-hour TSP Monitoring 23
sessions
Impact Water
Quality Monitoring 51
sessions
Impact Dolphin
Monitoring 8
sessions
Joint
Environmental Site Inspection 17
sessions
Daily
marine mammal exclusion zone monitoring was undertaken during the period of
dredging works. One sighting of the
Indo-Pacific humpback dolphin Sousa chinensis was recorded on 20 February 2014 during the
exclusion zone monitoring. The
marine dredging work was subsequently suspended until the observer has confirmed that the
area is continuously clear of dolphins for a period of 30 minutes.
Summary of
Breaches of Action/Limit Levels
Breaches of Action and Limit Levels for Air Quality
Twenty-one Action
Level and two Limit Level exceedances for 1-hr TSP; five
Action Level and one Limit Level exceedances for
24-hr TSP were recorded from the air quality monitoring in this reporting period. The exceedances
were considered to be due to the sporadic events from cumulative anthropogenic
activities in this area of Hong Kong and the construction works under this
Project were unlikely to be the major cause of the recorded exceedances
upon further investigation.
Breaches of Action and Limit Levels for Water Quality
Five Action
Level exceedances for depth-averaged suspended solids
(SS) were recorded in this reporting period. The exceedances
were well within the natural range and were unlikely to be due to the
construction works of this Contract upon further investigation.
Dolphin Monitoring
Whilst one
Action Level exceedance was observed for the
quarterly dolphin monitoring data between December 2013 and February 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 quarter. The
exceedance is considered to be the natural variation
of Chinese White Dolphin ranging pattern upon further investigation.
Environmental
Complaints, Non-compliance & Summons
No
non-compliance with EIA recommendations, EP conditions and other requirements associated with
the construction of this Contract was recorded in this reporting period.
No
environmental complaint was received in this reporting period.
No
environmental summons was received in this reporting period.
Reporting
Change
There was no
reporting change required in the reporting period.
Upcoming Works for the Next Reporting Period
Works to be
undertaken in the coming quarterly period include the following:
Marine-based works
¡P
Dredging
¡P
Reclamation at Portion N-A
¡P
Vertical seawall construction
¡P
Sloping seawall construction
¡P
Marine sheet piling for box culvert extension
¡P
Predrilling for box culvert foundation
Land-based works
Site WA 18
¡P
Site office construction
Portion N6
¡P
CLP substation footing & underground utilities
works
¡P
CLP substation superstructure
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.
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-145/2009), 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) 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).
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 |
2450
3111 2450
3511 |
2450
3099 2450
3099 |
ENPO / IEC (ENVIRON
Hong Kong Ltd.) |
ENPO Leader |
Y.H. Hui |
3465 2888 |
3465 2899 |
IEC |
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 |
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 |
Marine-based Works |
¡P
Dredging |
¡P
Removal of existing seawall |
¡P
Placement of rock grade 400 |
¡P
Delivery of 1,946 seawall blocks |
¡P
Vertical seawall construction |
¡P
Sloping seawall construction |
¡P
Marine sheet piling for box culvert extension |
¡P
Predrilling for box culvert foundation |
¡P
Temporary pontoon installation at River Trade
Terminal (RTT) |
Land-based Works |
Site WA 23 |
¡P
Sorting of rock material |
Site WA 18 |
¡P
Completion of chain-link fence, site hoarding works,
site formation works |
¡P
Site office structural works |
¡P
Temporary outdoor substation civil works |
¡P
Site office construction |
Portion N6 |
¡P
CLP Substation Superstructure |
¡P
CLP Substation Footing & underground utilities
works |
¡P
CLP Substation structure works |
¡P
CLP Substation E&M works |
Figure 1.2 Locations
of Construction Activities ¡V November 2013 to February 2014
|
||
|
||
Land-based
Works at Site WA-23 |
||
|
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/A and EP-354/2009/B, 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 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 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 |
Location |
Description |
Parameters & Frequency |
Monitoring Dates |
ASR1 |
Tuen Mun Fireboat Station |
Office |
1-hour Total Suspended Particulates (1-hour
TSP, µg/m3), 3 times per day every 6 days
24-hour Total Suspended Particulates
(24-hour TSP, µg/m3), daily for 24-hour every 6 days |
2, 7, 13, 19, 25 and 29 November 2013; 5, 11, 17, 23 and 28 December 2013; 3, 9, 15, 21, 27 and 30 January 2014; 5, 8, 12, 18, 24, and 28 February 2014 |
ASR5 |
Pillar
Point Fire Station |
Office |
||
AQMS1 |
Previous
River Trade Golf |
Bare
ground |
||
AQMS2/ASR6* |
Bare
ground at Ho Suen Street/ Butterfly Beach Laundry* |
Bare
ground/ Office |
||
ASR10 |
Butterfly
Beach Park |
Recreational
uses |
||
* Notes: |
|
|
|
|
AQMS2 was
relocated and HVS was re-installed at ASR6 (Butterfly Beach Laundry) on 17
January 2014. AQMS2 was then
superseded by ASR6 for the impact air quality monitoring. Impact air quality monitoring at ASR6
commenced on 21 January 2014. |
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 Anemometer |
MetPak, WindSonic (Wind Direction: WE570; Wind
Speed Sensor: WE550) |
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.
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 First to Fourth Monthly EM&A Report.
Table 2.3 Summary
of 1-hour TSP Monitoring Results in this Reporting Period
Month/Year |
Station |
Average (µg/m3) |
Range (µg/m3) |
Action Level (µg/m3) |
Limit Level (µg/m3) |
November 2013
to February 2014 |
ASR 1 |
202 |
56 - 474 |
331 |
500 |
ASR 5 |
224 |
43 - 559 |
340 |
500 |
|
AQMS1 |
173 |
48 - 431 |
335 |
500 |
|
AQMS2/ASR6 |
201 |
56 - 425 |
338 |
500 |
|
ASR10 |
154 |
46 - 645 |
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) |
November
2013 to February 2014 |
ASR 1 |
124 |
32 - 249 |
213 |
260 |
ASR 5 |
142 |
39 - 258 |
238 |
260 |
|
AQMS1 |
124 |
40 - 228 |
213 |
260 |
|
AQMS2/ASR6 |
134 |
38 - 269 |
238 |
260 |
|
ASR10 |
90 |
34 - 166 |
214 |
260 |
In this
reporting period, a total of twenty-three monitoring events were undertaken in
which twenty-one Action Level exceedances and two
Limit Level exceedances for 1-hr TSP; five Action
Level exceedances and one Limit Level exceedance for 24-hr TSP were recorded in ten air quality monitoring
events.
Meteorological
information collected at the ASR5, including wind speed and wind direction, is provided
in Appendix G.
Meteorological data between 4 and 14 February 2014 is not available due
to power failure.
The baseline
water quality monitoring undertaken by the Hong Kong ¡V Zhuhai ¡V Macao Bridge
Hong Kong Projects (HKZMB) between 6 and 31 October 2011 has included all
monitoring stations for the Project.
Thus, the baseline monitoring results and Action/Limit Level presented
in HKZMB Baseline Monitoring Report ([2]) are
adopted for this Project.
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.
Table 2.6 Water
Quality Monitoring Equipment
Equipment |
Model |
Qty. |
Water Sampler |
Kahlsico Water-Bottle Model 135DW 150 |
1 |
Dissolved Oxygen Meter |
YSI Pro 2030 |
1 |
pH Meter |
HANNA HI 8314 |
1 |
Turbidity Meter |
HACH 2100Q |
1 |
Monitoring Position Equipment |
¡§Magellan¡¨ Handheld GPS Model eXplorist GC |
4 |
DGPS Koden KGP913MK2 (1) |
1 |
The Action and
Limit Levels of the water quality monitoring is provided in Appendix D. The Event and Action plan is presented in
Appendix J.
The schedules
for water quality monitoring in the reporting period are provided in Appendix E.
During this
reporting period, marine dredging activities were undertaken at Portions N-A and
N-B, but no dredging was undertaken on 31 January 2014. A closed grab dredger was used and silt
curtains (cage-type and single floating type) were deployed during dredging
works in accordance with the EP.
The level of dredging activities was within the working rate described
in the EP and the approved EIA Report.
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 period
under favourable weather conditions. Monitoring results are presented
graphically in Appendix H and
detailed impact water quality monitoring data were reported in the First to Fourth Monthly EM&A Report.
In this
reporting period, a total of fifty-one monitoring events were undertaken in
which five Action Level exceedances for
depth-averaged SS were recorded in two monitoring events.
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) 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 2.3. 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 dolphin impact monitoring are shown in Appendix D. The Event and Action plan is presented
in Appendix J.
The dolphin
monitoring schedules for the reporting period are shown in Appendix E.
A total of 1137.92
km of survey effort was collected, with 95.0% 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, 428.91 km and 709.01 km of survey effort were collected from NEL and NWL
survey areas, respectively. The
total survey effort conducted on primary and secondary lines were 852.63 km and
285.29 km, respectively. The survey
efforts are summarized in Appendix I.
A total of 59 groups of 249 Chinese
White Dolphin sightings were recorded
during the two sets
of surveys in this reporting quarter.
All except four sightings were made during on-effort search. Fifty on-effort sightings were made on
primary lines, while five other on-effort sightings were made on secondary
lines. During this reporting
quarter, only three groups of 16 dolphins were sighted in NEL, while the other
56 groups of 233 dolphins were sighted NWL.
For the
detailed comparison of dolphin occurrence and usage of NEL and NWL survey area
between the impact phase and baseline phase monitoring, only the quarterly data
of December 2013 ¡V February 2014 from the impact phase monitoring was used in
the present report to tally with the three-month period of baseline monitoring
(September ¡V November 2011).
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 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
5th/9th |
2.68 |
8.05 |
Set 2: Dec
13th/19th |
0.0 |
0.0 |
|
Set 3: Jan
7th/9th |
0.0 |
0.0 |
|
Set 4: Jan
21st/23rd |
0.0 |
0.0 |
|
Set 5: Feb
6th/12th |
0.0 |
0.0 |
|
Set 6: Feb
14th/20th |
0.0 |
0.0 |
|
NWL |
Set 1: Dec
5th/9th |
6.95 |
30.57 |
Set 2: Dec
13th/19th |
6.82 |
27.27 |
|
Set 3: Jan
7th/9th |
10.00 |
39.99 |
|
Set 4: Jan
21st/23rd |
11.84 |
50.33 |
|
Set 5: Feb
6th/12th |
7.44 |
17.86 |
|
Set 6: Feb
14th/20th |
6.20 |
29.47 |
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 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) |
||
December 2013 ¡V February 2014 |
September 2011 ¡V November 2011 |
December 2013 ¡V February 2014 |
September 2011 ¡V November 2011 |
|
Northeast Lantau |
0.45 ¡Ó 1.10 |
6.00 ¡Ó 5.05 |
1.34 ¡Ó 3.29 |
22.19 ¡Ó 26.81 |
Northwest Lantau |
8.21 ¡Ó 2.21 |
9.85 ¡Ó 5.85 |
32.58 ¡Ó 11.21 |
44.66 ¡Ó 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 - 12 individuals per group in North Lantau
region during December 2013 to February 2014. 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
2013 ¡V February 2014 |
September
2011 ¡V November 2011 |
|
Overall |
0.45 ¡Ó 1.10 |
6.00
¡Ó 5.05 |
Northeast Lantau |
8.21 ¡Ó 2.21 |
9.85 ¡Ó 5.85 |
Northwest Lantau |
0.45 ¡Ó 1.10 |
6.00
¡Ó 5.05 |
During this
month of dolphin monitoring, 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 250 m marine
mammal exclusion zone monitoring was undertaken during the period of dredging
activities under this Contract. One sighting of the Indo-Pacific humpback dolphin
(i.e. Chinese White Dolphin) Sousa chinensis was recorded on 20 February 2014 during the
exclusion zone monitoring. The
dolphin group of three was sighted within the 250 m marine mammal exclusion
zone from a dredging barge sighting platform by the marine mammal observer. The marine dredging work was
subsequently suspended until the
observer has confirmed that the area is continuously clear of dolphin for a
period of 30 minutes. The Dolphin
Intrusion Report is presented in Appendix J of the Forth Monthly EM&A Report.
The first
quarterly Coral Post-Translocation Monitoring was conducted on 17 January 2014
and the results were provided in the First
Quarterly Post-Translocation Coral Monitoring Report.
Site
inspections were carried out on a weekly basis to monitor the implementation of
proper environmental pollution control and mitigation measures under the
Contract. Seventeen (17) site
inspections were carried out in the reporting quarter on 5, 12, 20, 27 November
2013; 4, 10, 18, 24 and 31 December 2013; 7, 14, 22 and 29 January 2014; 5, 11,
19 and 26 February 2014.
Key observations
during the site inspections in this reporting period are summarized in Table 2.12.
Table 2.12 Specific
Observations and Recommendations during the Weekly Site Inspection in this
Reporting Period
Inspection Date |
Environmental Observations |
Recommendations/ Remarks |
5 November
2013 |
Portion N-A ¡P
Floating Type Silt Curtain was not deployed properly |
Portion N-A ¡P
The Contractor secured the floating type silt
curtain as recommended. |
Dredging
barge ¡P
Oily floor on dredging barge ¡P
Label on chemical container was missing and they
were placed at secured area. ¡P
Black smoke was observed when dredger was under
operation |
Dredging
barge ¡P
The Contractor cleaned the oily floor by appropriate
chemical absorbance ¡P
The Contractor placed the chemical containers at the
secured area with proper label. ¡P
The Contractor was reminded to maintain the plants
regularly. |
|
12 November
2014 |
Site WA-23 |
Site WA-23 |
¡P
Residual sandy materials were found leaving at the
edge of loading area |
¡P
The Contractor was reminded to clean up the residual
sandy material nearby at the loading area at site WA 23 upon completion of
sandy materials transfer. |
|
¡P
The Contract was reminded to cover the temporary
stockpiles at site WA 23 properly when piling is completed. |
¡P
The Contract covered the temporary stockpiles at
site WA 23. |
|
Site WA-18 |
Site WA-18 |
|
¡P
Drip tray stopper was found missing and stagnant of
water was found in the drip tray. |
¡P
The Contractor was reminded to ensure the trip tray
is sealed and clean up the stagnant water. |
|
20 November
2013 |
Barge - GD1 ¡P
Sediment flow was observed outside the cage-type
silt curtain in the dredging site Site WA-18 ¡P
Several oil drums was observed without chemical
labels ¡P
Sandy materials were observed near the drainage
area. |
Barge - GD1 ¡P
The Contractor was reminded to regularly check the
silt curtain to prevent sediment outflow into the sea. Site WA-18 ¡P
The contractor was reminded to provide chemical
labels for the oil drums ¡P
Bunds should be provided to avoid sediment runoff |
27 November
2013 |
Barge - GD1 ¡P
Oil stain was observed on the barge ¡P
Drip tray should be provided for the
chemical containers. Site WA-23 ¡P
EP should be displayed conspicuously in the
site entrance. |
Barge - GD1 ¡P
The Contractor was reminded to regularly
check for oil leakage and proper maintenance. ¡P
The Contractor was reminded to provide drip
tray for the chemical containers. |
Site WA-23 ¡P
The Contractor was reminded to display EP
conspicuously in the site entrance. |
||
4 December
2013 |
Barge - Crown
Asia 1 ¡P
A proper chemical waste container with good
conditions and capacity should be provided. |
Barge - Crown
Asia 1 ¡P
The contractor was reminded to provide a proper
chemical waste container with adequate capacity and to maintain in good
conditions. |
10 December
2013 |
Barge ¡V Wing
Ko ¡P
Oil stain was observed, drip tray should be provided
for the chemical containers Portion N-A ¡P
Silt curtain was found damaged. |
Barge ¡V Wing
Ko ¡P
The contractor was reminded to clean up the oil
stain as chemical waste and provide drip tray for the chemical containers. Portion N-A ¡P
The contractor was reminded to repair the damaged
silt curtain to maintain efficiency. |
18 December
2013 |
Barge ¡V
Crown Asia 1 ¡P
Drip tray should be maintained with adequate
capacity to avoid oil spillage. Any oil spill observed should be cleaned up
probably as chemical waste. |
Barge ¡V
Crown Asia 1 ¡P
The contractor was reminded to regularly check the
efficiency of drip tray and clean up the oil stain. |
24 December
2013 |
Barge - Crown
Asia 1 ¡P
Cage-type silt curtain
was nor deployed properly and found broken. ¡P
Dredging grab was found
leaking remarkable. Site WA-18 ¡P
Sandy
materials were exposed over the ground without proper cleanup. |
Barge - Crown
Asia 1 ¡P
The Contractor was required to conduct immediate
maintenance of the silt curtain and deploy it properly. ¡P
The Contractor was reminded to conduct regular check
and maintenance on the dredging grab. ¡P
The Contractor was reminded to drip off the
excessive muddy water within the cage-type silt curtain before loading the
marine sediments to the hover barge. Site WA-18 ¡P
The Contractor was reminded to clean up the area of
dust nuisance regularly and frequent watering on exposed ground. |
31 December
2013 |
Site WA-23 ¡P
A proper tree protection zone should be set up to
avoid disturbance to the remaining natural habitat. ¡P
Oil stain was observed near the drip tray for the
chemical containers.
The
chemical container was observed without drip tray and labels. Site WA-18 ¡P
The Contractor was reminded to provide the drip tray
plug and maintain the capacity of drip trays for the chemical containers |
Site WA-23 ¡P
The Contractor was
reminded to maintain the tree protection zone properly. ¡P
The Contractor was
reminded to clean up stained soil as chemical waste
¡P
The Contractor was
reminded to provide drip tray and label for the chemical container. Site WA-18 ¡P
The Contractor was reminded to regularly check and
maintain the capacity of drip trays to avoid spillage. |
7 January
2014 |
Portion N-A ¡P
The Contractor was
reminded to tie the silt curtain to the existing sloping seawall. Portion N6 ¡P
Water
spraying should be applied with breaking works to avoid dust generation.
¡P
The idle
exposed stockpile should be fully covered by tarpaulin.
¡P
Cut-off drain
should be provided at the site entrance to avoid silty
water runoff. |
Portion N-A ¡P
The Contractor was reminded to regularly check for
maintenance of the silt curtain. Portion N6 ¡P
The Contractor was reminded to implement watering
regularly throughout the site area.
¡P
The Contractor was reminded to cover the stockpile
while not in use.
¡P
The Contractor was reminded to provide measures for silty water runoff. |
14 January
2014 |
Barge -
Crown Asia 1 ¡P
Materials other than chemical containers should be
removed from the drip tray and chemical labels should be provided.
¡P
Dark smoke was observed at the dredger. Portion N6 ¡P
The Contractor was reminded to regularly check and
maintain the cut-off drain to avoid water runoff.
Site WA-18
¡P
Dusty materials on the paved road should be cleared
to avoid dust generation. |
Barge -
Crown Asia 1 ¡P
The Contractor was
reminded to tidy up the drip tray area and provide chemical labels for the
chemical containers.
¡P
The Contractor was
reminded to regularly maintain the dredger to control dark smoke emission. Portion N6 ¡P
The Contractor was reminded to clear the sandy
materials in the cut-off drain.
Site WA-18
¡P
The Contractor was reminded to clear the dusty
materials on the ground. |
22 January
2014 |
Portion N6 ¡P
Exposed slopes should be fully covered by
tarpaulin.
¡P
Chemical labels should be provided to the chemical
containers. Site WA-18
¡P
Waste materials should be cleared regularly and to
maintain site tidiness. |
Portion N6 ¡P
The Contractor was reminded to cover the exposed
slopes with tarpaulin.
¡P
The Contractor was reminded to provide chemical
labels to the chemical containers.
Site WA-18
¡P
The Contractor was reminded to regularly clear the
waste materials and provision of site cleanliness. |
29 January
2014 |
Site
WA-18 ¡P
C&D waste materials should be properly sorted
out for recycling.
|
Site
WA-18 ¡P
The Contractor was reminded to regularly sort out C&D
waste materials before disposal. |
5 February
2014 |
Barge - Tai
Hip 2
¡P
Drip tray should be provided to the oil drum to
avoid chemical spillage. |
Barge - Tap
Hip 2 ¡P
The Contractor was reminded to provide drip tray for
the oil drum and regular maintenance for the drip tray. |
11 February
2014 |
Barge - Tai
Hip 2
¡P
Chemical labels should be provided to the oil drum
and the drip tray for the winch should be maintained regularly to avoid oil
spillage
Barge -
Crown Asia 1
¡P
Excess sandy materials should be cleared from the
decks and exposed fittings of the barge. |
Barge - Tap
Hip 2
¡P
The Contractor was reminded to regularly clear the
oily liquid from the drip tray and provide labels for all chemical
containers. Barge -
Crown Asia 1
¡P
The Contractor was reminded to regularly clean the
decks to avoid sediment runoff. |
19 February
2014 |
Barge ¡V
Crown Asia 1 ¡P
Drip tray for the oil gun should be maintained and
the oil gun should be properly stored while not in use. ¡P
Chemical containers should be properly stored in the
drip tray Portion N6 ¡P
Stockpile not in use should be fully covered ¡P
Chemical labels should be provided to the oil drum. |
Barge ¡V
Crown Asia 1 ¡P
The Contractor was reminded to maintain the capacity
of drip trays regularly and store the oil gun properly while not in use. ¡P
The Contractor was reminded to provide drip trays
for the chemical containers Portion N6 ¡P
The Contractor was reminded to fully cover the
exposed stockpile. ¡P
The Contractor was reminded to provide chemical
labels for the oil drum. |
26 February
2014 |
Barge - Sun
Leung Kee 13
¡P
Sheet piling driving machine should be maintained
regularly and the oil stain should be cleared as chemical waste. |
Barge - Sun
Leung Kee 13
¡P
The Contractor was reminded to check the sheet
piling driving machine to prevent oil spill and clean up the oil stain as
chemical waste. |
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, recyclable materials, chemical wastes and marine
sediments. 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 2.13.
Table 2.13 Quantities
of Different Waste Generated in the Reporting Period
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 |
|||||||
November
2013 |
2,835 |
47,449 |
0 |
152 |
130 |
0 |
21,100 |
13,200 |
December
2013 |
883 |
204,421 |
0 |
12 |
130 |
0 |
40,500 |
5,000 |
January 2014 |
9,012 |
310,256 |
0 |
45 |
130 |
0 |
34,000 |
12,500 |
February
2014 |
0 |
219,319 |
0 |
28 |
0 |
20 |
18,500 |
24,500 |
Total |
12,730 |
781,445 |
0 |
237 |
390 |
20 |
114,100 |
55,200 |
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/A |
8 December
2010 |
Throughout
the Contract |
HyD |
Tuen Mun-Chek Lap Kok Link |
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 HY/2012/08 |
Waste Water Discharge License |
WT00017707-2013 |
18 November
2013 |
30 November
2018 |
DBJV |
Discharge of Construction Runoff |
Construction Noise Permit |
GW-RW0691-13 |
15 October
2013 |
14 April
2014 |
DBJV |
For Dredging and Reclamation Works |
Construction Noise Permit |
GW-RW0035-13 |
27 January 2014 |
26 July 2014 |
DBJV |
For Dredging and Reclamation Works,
superseded by GW-RW0095-14 on 10 Feb 2014 |
Construction Noise Permit |
GW-RW0095-14 |
10 February 2014 |
9 August 2014 |
DBJV |
For Dredging and Reclamation Works |
Construction Noise Permit |
GW-RW0822-13 |
14 November
2013 |
10 May 2014 |
DBJV |
For works in site WA18 |
Construction Noise Permit |
GW-RS0814-13 |
15 November
2013 |
10 May 2014 |
DBJV |
For works in site WA23 |
Construction Noise Permit |
GW-RW0029-14 |
27 January 2014 |
26 July 2014 |
DBJV |
For Portion N6, superseded by GW-RW0077-14 on 17 Feb 2014 |
Construction Noise Permit |
GW-RW0077-14 |
17 February 2014 |
16 August 2014 |
DBJV |
For Portion N6 |
Marine Dumping Permit |
EP/MD/14-072 |
1 November
2013 |
30 April
2014 |
DBJV |
For Type 1 |
Marine Dumping Permit |
EP/MD/14-071 |
1 December
2013 |
31 December
2013 |
DBJV |
For Type 1 (dedicated site) and Type
2 |
Marine Dumping Permit |
EP/MD/14-108 |
1 January
2014 |
31 January
2014 |
DBJV |
For Type 1 (dedicated site) and Type
2 |
Marine Dumping Permit |
EP/MD/14-124 |
1 February
2014 |
28 February
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.
For air
quality impact monitoring, a total of twenty-three monitoring events were
undertaken and exceedances were recorded in ten
monitoring events (Table 2.15). Upon further investigation, the recorded
exceedances in air quality monitoring were considered
to be sporadic events of cumulative anthropogenic activities in this area of
Hong Kong and the construction works under this Contract were unlikely the
major cause of the recorded exceedances. Detailed investigation findings were
presented in Appendix L of the First to Fourth Monthly EM&A Report.
Table 2.15 Summary
of Exceedances for Air Quality Impact Monitoring
Station |
Exceedance Level |
1-hr TSP |
24-hr TSP |
Number of Exceedances |
|
1-hr TSP |
24-hr TSP |
||||
AQMS1 |
Action Level |
2013-11-07 |
2014-01-03 |
3 |
1 |
Limit Level |
- |
- |
0 |
0 |
|
ASR1 |
Action Level |
2013-11-19 |
2013-12-11 |
5 |
2 |
Limit Level |
- |
- |
0 |
0 |
|
ASR5 |
Action Level |
2013-11-07 |
2013-12-11 |
7 |
2 |
Limit Level |
2013-12-11 |
- |
1 |
0 |
|
AQMS2/ASR6 |
Action Level |
2013-12-11 |
- |
5 |
0 |
Limit Level |
- |
2013-12-23 |
0 |
1 |
|
ASR10 |
Action Level |
2013-12-28 |
- |
1 |
0 |
Limit Level |
2013-11-07 |
- |
1 |
0 |
|
Total number of Action level Exceedances:
|
21 |
5 |
|||
Total number of Limit level Exceedances:
|
2 |
1 |
For marine
water quality impact monitoring, a total of fifty-one monitoring events were
undertaken and exceedances were recorded in two
monitoring events (Table 2.17). The exceedances
were well within the natural range and were unlikely to be due to the marine works
of this Contract upon further investigation. Detailed investigation findings are
presented in Appendix L of the First to Fourth Monthly EM&A Report. 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 (November 2013
to February 2014) |
|||
Mid-ebb |
Mid-flood |
Mid-ebb |
Mid-flood |
Mid-ebb |
Mid-flood |
|
CS4 |
10.2 |
9.0 |
13.3 |
11.7 |
5.2 |
5.0 |
CS6 |
10.9 |
11.7 |
14.1 |
15.2 |
5.2 |
5.2 |
IS12 |
9.2 |
9.5 |
12.0 |
12.3 |
5.2 |
5.3 |
IS13 |
10.0 |
10.5 |
13.0 |
13.7 |
5.2 |
5.3 |
IS14 |
10.4 |
9.7 |
13.5 |
12.6 |
5.3 |
5.4 |
IS15 |
9.6 |
11.0 |
12.5 |
14.2 |
5.7 |
5.6 |
SR10A |
10.3 |
10.2 |
13.3 |
13.3 |
5.4 |
5.1 |
SR8 |
10.1 |
11.3 |
13.1 |
14.7 |
5.5 |
5.4 |
SR9 |
8.8 |
9.9 |
11.4 |
12.8 |
5.4 |
5.6 |
Grand Total |
10.0 |
10.3 |
13.0 |
13.4 |
5.4 |
5.3 |
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
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 |
- |
- |
- |
- |
- |
- |
2013-12-06 |
2013-12-04 |
LL |
- |
- |
- |
- |
- |
- |
- |
- |
|
SR8 |
AL |
- |
- |
- |
- |
- |
- |
- |
2013-12-06 |
LL |
- |
- |
- |
- |
- |
- |
- |
- |
|
SR9 |
AL |
- |
- |
- |
- |
- |
- |
2013-12-06 |
2013-12-06 |
LL |
- |
- |
- |
- |
- |
- |
- |
- |
|
SR10 |
AL |
- |
- |
- |
- |
- |
- |
- |
- |
LL |
- |
- |
- |
- |
- |
- |
- |
- |
|
Total AL Exceedances: |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
3 |
|
Total LL Exceedances: |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
Notes: |
|||||||||
(a) AL =
Action Level; LL = Limit Level |
One Action
Level exccedance of impact dolphin monitoring was
recorded in this reporting quarter.
Following the review of monitoring data and marine works details in
accordance with the procedures stipulated in the Event and Action Plan of
Updated EM&A Manual, the recorded exceedance was
considered to be due to natural seasonal variation of dolphin ranging pattern. Detailed investigation findings are
presented in Appendix K.
Cumulative statistics
are provided in Appendix K.
The
Environmental Complaint Handling Procedure is provided in Figure 2.4.
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 K.
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 |
¡P
Dredging |
¡P
Reclamation at Portion N-A |
¡P
Vertical Seawall construction |
¡P
Sloping Seawall construction |
¡P
Marine Sheet Piling for Box Culvert extension |
¡P
Predrilling
for Box culvert Foundation |
Land-based Works |
Site WA-18 ¡P
Site office construction Portion N6 |
¡P
CLP Substation Footing & underground utilities
works |
¡P
CLP
Substation Superstructure |
Potential
environmental impacts arising from the above upcoming construction activities
are mainly associated with dust, marine water quality, marine ecology and waste
management issues.
Impact
monitoring for air quality, marine water quality and marine ecology (include
dolphin monitoring and post-translocation coral monitoring) are scheduled to
continue for the next reporting period.
This First Quarterly
EM&A Report presents the findings of the EM&A activities undertaken
during the period from 1 November 2013 to 28 February 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), marine water quality and dolphin monitoring
were carried out in the reporting period.
Twenty-one Action Level and two Limit Level exceedances
for 1-hr TSP, and five Action Level and one Limit Level exceedances
for 24-hr TSP were recorded during the reporting period. Five Action Level exceedances
for depth-averaged SS were recorded in marine water quality impact monitoring during
the reporting period. Investigation
findings showed that the Project works were unlikely to be the major cause of
the recorded exceedances in air quality and water
quality monitoring. Nevertheless,
the Contractor was reminded to ensure that all dust mitigation measures are
provided at the construction sites and the proper deployment of cage-type silt
curtains at the dredging site.
A total of 59 groups of 249 Chinese
White Dolphin sightings were recorded
during the two sets
of surveys from November 2013 to February 2014. During this month of dolphin monitoring,
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.
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 revert the situation.
Seventeen
weekly environmental site inspections were carried 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.
No complaint
and summons/ prosecution was received during the
reporting period.
The monitoring
programme has been reviewed and was considered as
adequate to cater for the nature of works in progress. Change to the
monitoring programme was thus not recommended at this stage. The monitoring programme will be
evaluated as appropriate in the next reporting period. The ET will keep track on the
construction works to confirm compliance of environmental requirements and the
proper implementation of all necessary mitigation measures.