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 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
Appendix A
|
Project Organization
|
Appendix B
|
Construction 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
|
Water Quality Monitoring Results
|
Appendix H
|
Impact Dolphin Monitoring
|
Appendix I
|
Event And Action Plan
|
Appendix J
|
Cumulative Statistics On Exceedance And Complaint
|
Appendix K
|
Waste Flow Table
|
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. 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 and EP-354/2009/C,
were granted on 28 January 2014 and 10 December 2014, 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 Fifth Quarterly EM&A report presenting
the EM&A works carried out during the period from 1 December 2014 to 28 February
2015 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
·
Reclamation filling at Portion N-C; and
·
Rock Bund Deposition for Marine Sheet Pile Remedial
Works at Works Area – Portion N-A.
Land-based Works
·
Land Bored Piling Works at Works Area - Portion N-A;
·
Surcharge set up at Works Area - Portion N-C;
·
Set up of Slurry Treatment Plant at Works Area –
Portion N-C.
·
Diaphragm Wall Construction at Works Area – Portion
N-C;
·
TBM Platform Construction at Works Area – Portion N-A;
·
Formwork and Metal Scaffolding works at North
Launching Shaft at Works Area – Portion N-A; and,
·
Delivery & Assembly of TBM at Works Area – Portion
N-A.
A
summary of monitoring and audit activities conducted in the reporting period is
listed below:
24-hour
TSP Monitoring 29 sessions
1-hour
TSP Monitoring 29
sessions
Impact
Water Quality Monitoring 37
sessions
Impact
Dolphin Monitoring 6
sessions
Joint
Environmental Site Inspection 13 sessions
Implementation of Marine Mammal Exclusion Zone
There was no dredging or marine sheet piling
works in open waters during this reporting period. The day-time monitoring of Dolphin Exclusion
Zone (DEZ) by dolphin observers was in effect throughout the period of rock
bund deposition for marine sheet pile remedial works, in which no sighting of
the Indo-Pacific humpback dolphin Sousa chinensis (i.e. Chinese White Dolphin) was recorded
during the exclusion zone monitoring in the reporting month. As informed by the Contractor, rock bund
deposition for marine sheet pile remedial works was completed on 28 February
2015. Thus, the day-time monitoring of
Dolphin Exclusion Zone (DEZ) by dolphin observers was suspended from 28
February 2015.
Summary
of Breaches of Action/Limit Levels
Breaches of Action and Limit Levels for Air Quality
Two
Action Level exceedances for 1-hr TSP were recorded from the air quality
monitoring in this reporting period. No
Limit Level exceedances for 1-hr TSP were recorded. No Action or Limit Level exceedances for
24-hr TSP were record. The exceedances
were considered to be due to the sporadic events from cumulative anthropogenic
activities in this area of Hong Kong upon further investigation.
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 Limit Level exceedance was observed for the quarterly dolphin monitoring
data between December 2014 and February 2015, 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.
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:
Land-based works
·
Diaphragm Wall Construction for Ventilation Shaft at
Works Area – Portion N-C;
·
TBM Platform Construction at Works Area – Portion N-A;
·
Delivery & Assembly of TBM at Works Area – Portion
N-A ;
·
Set up of Slurry Treatment Plant at Works Area –
Portion N-C; and
·
Maintenance of armor rocks at Works Area – Portion
N-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.
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 and EP-354/2009/C, were granted on 28 January 2014 and 10 December
2014, 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. 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 |
3547 2133 |
3465 2899 |
IEC |
F. C. Tsang |
3547 2134 |
3465 2899 |
|
Contractor (Dragages –
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 |
Portion N-C ·
Reclamation filling Portion N-A |
·
Rock Bund Deposition for Marine Sheet Pile Remedial
Works |
Land-based Works |
Portion N-A ·
Land Bored Piling Works |
·
TBM Platform Construction ·
Formwork and Metal Scaffolding works at North
Launching Shaft ·
Delivery & Assembly of TBM Portion N-C ·
Surcharge set up ·
Set up of Slurry Treatment Plant ·
Diaphragm Wall Construction |
Figure
1.2 Locations of Construction Activities – December
2014 to February 2015
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/C, 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 |
Location |
Description |
Parameters & Frequency |
Monitoring Dates |
ASR1 |
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 |
2, 5, 8, 11, 14, 17, 20, 23, 26 and 29
December 2014; 1, 4, 7, 10, 13, 16, 19, 22, 25, 28 and 31
January 2015; 3, 6, 9, 12, 15, 17, 23 and 26 February
2015 |
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 I.
The
schedules for air quality monitoring in the reporting quarter are provided in Appendix E. No
construction works was carried out from 19 February 2015 to 21 February 2015,
thus Impact Air Quality Monitoring was postponed to 23 February 2015.
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 Fourteenth to Sixteenth 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
2014 to February 2015 |
ASR 1 |
196 |
53
– 329 |
331 |
500 |
ASR 5 |
199 |
95
– 346 |
340 |
500 |
|
AQMS1 |
162 |
56
– 348 |
335 |
500 |
|
ASR6 |
151 |
53
– 309 |
338 |
500 |
|
ASR10 |
116 |
55
– 251 |
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
2014 to February 2015 |
ASR 1 |
114 |
64
– 162 |
213 |
260 |
ASR 5 |
112 |
76
– 151 |
238 |
260 |
|
AQMS1 |
100 |
58
– 155 |
213 |
260 |
|
ASR6 |
93 |
56
– 125 |
238 |
260 |
|
ASR10 |
80 |
52
– 121 |
214 |
260 |
Two
Action Level exceedances for 1-hr TSP were recorded from the air quality
monitoring in this reporting period. No
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.
The
baseline water quality monitoring undertaken by the Hong Kong – Zhuhai – 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 Levels 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(°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 |
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 I.
The
schedules for water quality monitoring in the reporting period are provided in Appendix E. The water quality
monitoring on 26 December 2014 was postponed to 29 December 2014 since no
marine works was conducted between 25 and 26 December 2014. No construction works was carried out from 19
February 2015 to 21 February 2015, thus Impact Water Quality Monitoring was
postponed to 23 February 2015.
During
this reporting period, only minor marine works included rock bund deposition
for marine sheet pile remedial works was carried out at Portion N-A. According to the Contractor, rock bund deposition for
marine sheet pile remedial works was completed on 28 February 2015.
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 G and detailed impact water quality monitoring
data were reported in the Fourteenth
to Sixteenth Monthly EM&A Report.
In
this reporting period, a total of thirty-seven monitoring events were
undertaken in which no exceedances were recorded. Summary of Exceedances for Water Quality Impact Monitoring
in this Reporting Quarter is detailed in Table
2.17.
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 I.
The
dolphin monitoring schedules for the reporting period are shown in Appendix E.
A
total of 891.50 km of survey effort was conducted, with 99.6% 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, 347.05 km and 544.45 km
of survey effort were conducted from NEL and NWL survey areas, respectively. The total survey effort conducted on primary
and secondary lines were 645.44 km and 246.06 km, respectively. The survey efforts are summarized in Appendix H.
A
total of 15 groups of 52 Chinese White Dolphin sightings
were recorded during the six sets of surveys in this reporting quarter. All except three sightings were made on
primary lines during on-effort search, and none of the dolphin groups was
associated with operating fishing vessel. During this reporting quarter, all dolphin groups were
sighted in NWL, while none of the dolphin groups were 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 2nd/9th |
0.0 |
0.0 |
Set 2: Dec 15th/23rd[JY1] |
0.0 |
0.0 |
|
Set 3: Jan 8th/15th |
0.0 |
0.0 |
|
Set 4: Jan 27th /29th |
0.0 |
0.0 |
|
Set 5: Feb 5th/13th |
0.0 |
0.0 |
|
Set 6: Feb 16th/25th |
0.0 |
0.0 |
|
NWL |
Set 1: Dec 2nd/9th |
2.79 |
5.58 |
Set 2: Dec 15th/23rd[JY2] |
1.41 |
1.41 |
|
Set 3: Jan 8th/15th |
4.33 |
21.64 |
|
Set 4: Jan 27th /29th |
7.52 |
37.59 |
|
Set 5: Feb 5th/13th |
1.40 |
1.40 |
|
Set 6: Feb 16th/25th |
0.0 |
0.0 |
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 2014 – February 2015 |
September 2011 – November 2011 |
December 2014 – February 2015 |
September 2011 – November 2011 |
|
Northeast Lantau |
0.0 |
6.00 ± 5.05 |
0.0 |
22.19 ± 26.81 |
Northwest Lantau |
2.91
± 2.69 |
9.85 ± 5.85 |
11.27
± 15.19 |
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 2014 to February 2015. 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 2014 – February 2015 |
September 2011 – November 2011 |
|
Overall |
3.47
± 2.29 |
3.72 ± 3.13 |
Northeast Lantau |
0.0 |
3.18 ± 2.16 |
Northwest Lantau |
3.47 ± 2.29 |
3.92 ± 3.40 |
Whilst
one Limit Level exceedance was observed for the quarterly dolphin monitoring
data between December 2014 and February 2015, 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.
There was no dredging or marine sheet piling works in open waters
during this reporting period. The
day-time monitoring of Dolphin Exclusion Zone (DEZ) by dolphin observers was in
effect throughout the period of rock bund deposition for marine sheet pile
remedial works, in which no sighting of the Indo-Pacific humpback dolphin Sousa chinensis
(i.e. Chinese White Dolphin) was recorded during the exclusion zone monitoring
in the reporting month. According to the
Contractor, rock bund deposition for marine sheet pile remedial works was
completed on 28 February 2015. Thus, the
day-time monitoring of Dolphin Exclusion Zone (DEZ) by dolphin observers was
suspended from 28 February 2015.
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 3, 10, 17, 24 and 31 December 2014;
7, 14, 21 and 28 January 2015; 4, 11, 18 and 25 February 2015.
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 |
|
3 December
2014 |
Reclamation
Works Area - Portion N-B Accumulated
general refuse was observed. Reclamation
Works Area - Portion N-C Drip
tray should be cleaned more frequently. |
Reclamation
Works Area - Portion N-B The
Contractor was reminded to clear the accumulated general refuse. Reclamation
Works Area - Portion N-C The
Contractor was reminded to clear oily water in the drip tray. |
|
10
December 2014 |
Works Area - Portion N6
Drip tray should be cleaned more frequently. |
Works Area - Portion N6
The Contractor was reminded to clear the oily water in the drip tray. |
|
17 December
2014 |
Works
Area - Portion N-C Stockpile
of fill material was observed near the seawall. |
Works
Area - Portion N-C The
Contractor was reminded to remove the fill material close to the seawall. |
|
24
December 2014 |
Works
Area - Portion N-A Chemical
container was observed without drip tray. |
Works
Area - Portion N-A The
Contractor was reminded to remove the chemical container. |
|
31
December 2014 |
Works
Area - Portion N-A Excess
muddy water was observed. Works
Area – Portion N-B Accumulated
general refuse was observed. |
Works
Area - Portion N-A The
Contractor was reminded to clear the excess muddy water. Works
Area – Portion N-B The
Contractor was reminded to clear the accumulated general refuse. |
|
7 January 2015 |
Works
Area - Portion N-A Oil
drum without drip tray was observed. Chemical
container should be removed and place in chemical storage area. Works
Area - Portion N-C Oil
drum without drip tray was observed. |
Works
Area - Portion N-A The
Contractor was reminded to provide drip tray for the oil drum. The
Contractor was reminded to place the chemical container in chemical storage
area. Works
Area - Portion N-C The
Contractor was reminded to provide drip tray for the oil drum. |
|
14
January 2015 |
Works Area - Portion N-A
Excess muddy water was observed.
General refuse was observed on the ground.
Chemical containers should be removed and place in chemical storage
area. |
Works Area - Portion N-A
The Contractor was reminded to clear the excess muddy water.
The Contractor was reminded to clear the general refuse on the ground.
The Contractor was reminded to remove the chemical containers. |
|
21 January
2015 |
Works
Area - Portion N-A Cement
bags should be covered. Works
Area - Portion N-B Oil
drum without chemical labels was observed. Chemical
containers were observed on the ground. Works
Area - Portion N-C Excess
muddy water was observed. |
Works
Area - Portion N-A The
Contractor was reminded to fully cover the cement bags. Works
Area - Portion N-B The
Contractor was reminded to provide chemical labels for the oil drum. The
Contractor was reminded to remove the chemical containers. Works
Area - Portion N-C The
Contractor was reminded to clear the excess muddy water. |
|
28
January 2015 |
Works
Area - Portion N-A Water
spraying should be applied more frequently during windy condition. Works
Area - Portion N-B Excess
muddy water was observed. |
Works
Area - Portion N-A The
Contractor was reminded to apply water spraying more frequently during windy
condition. Works
Area - Portion N-B The
Contractor was reminded to clear the excess muddy water. |
|
4 February
2015 |
Works
Area - Portion N-A Oil
drums without drip tray were observed. Works
Area - Portion N-B Accumulated
general refuse should be cleared more frequently. Chemical
containers without drip tray were observed. |
Works
Area - Portion N-A The
Contractor was reminded to provide drip tray for the oil drums. Works
Area - Portion N-B The
Contractor was reminded to clear the general refuse more frequently. The
Contractor was reminded to provide drip tray for the chemical containers. |
|
11
February 2015 |
Works
Area - Portion N-A Used
cement bags should be removed or stored properly. Idle
stockpile should be covered. Cement
bags should be covered. |
Works
Area - Portion N-A The
Contractor was reminded to remove the used cement bags. The
Contractor was reminded to cover the idle stockpile. The
Contractor was reminded to cover the cement bags. |
|
18 February
2015 |
Works
Area - Portion N-A Drip
tray should be cleaned up more frequently. Cement
bags were observed without cover. Works
Area - Portion N-C Oil
leakage was observed under the machine. Chemical
containers should be stored in chemical storage area. Accumulated
general refuse should be cleared more frequently. |
Works
Area - Portion N-A The
Contractor was reminded to clean up the drip tray more frequently. The
Contractor was reminded to cover the cement bags. Works
Area - Portion N-C The
Contractor was reminded to fix the oil leakage problem and clean up the
stained soil as chemical waste. The
Contractor was reminded to store the chemical containers in proper storage
area. The
Contractor was reminded to clear the accumulated general refuse more
frequently. |
|
25
February 2015 |
Works
Area - Portion N-A Idle
stockpile should be covered by tarpaulin. Works
Area - Portion N-B Accumulated
general refuse should be cleared. |
Works
Area - Portion N-A The
Contractor was reminded to cover the idle stockpile. Works
Area - Portion N-B The
Contractor was reminded to clear accumulated general refuse. |
|
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 imported fill.
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) |
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 |
|||||||
December 2014 |
10,151 |
108,279 |
0 |
49 |
0 |
0 |
0 |
0 |
January 2015 |
30,877 |
0 |
0 |
80 |
0 |
0 |
0 |
0 |
February
2015 |
4,152 |
0 |
0 |
74 |
0 |
0 |
0 |
0 |
Total |
45,180 |
108,279 |
0 |
203 |
0 |
0 |
0 |
0 |
Notes: |
||||||||
(a) Inert
construction wastes include hard rock and large broken concrete, and
materials disposed as public fill. (b) Non-inert
construction wastes include general refuse disposed at landfill. (c) Recyclable
materials include metals, paper, cardboard, plastics, timber and others. |
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 |
- |
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 |
For works in site WA18 |
Waste Water
Discharge License |
WT00018433-2014 |
6
March 2014 |
31
March 2019 |
DBJV |
For works in site Portion N6 |
Construction Noise Permit |
GW-RW0706-14 |
29
September 2014 |
28
March 2015 |
DBJV |
For works in site Portion N6 |
Construction Noise Permit |
GW-RW0970-14 |
17 December 2014 |
14 May 2015 |
DBJV |
For Dredging and Reclamation Works |
Construction Noise Permit |
GW-RW0550-14 |
25
July 2014 |
24
January 2015 |
DBJV |
For Dredging and Reclamation Works |
Construction
Noise Permit |
GW-RS0847-14 |
11
May 2014 |
10
May 2015 |
DBJV |
For works
in site WA23 |
Construction
Noise Permit |
GW-RS0674-14 |
18
September 2014 |
17
March 2015 |
DBJV |
For GI
works at Southern Landfall |
Marine
Dumping Permit |
EP/MD/15-142 |
7
November 2014 |
31
January 2015 |
DBJV |
For Type 1
(Open Sea Disposal) |
Marine
Dumping Permit |
EP/MD/15-007 |
20
October 2014 |
19
November 2015 |
DBJV |
For Type 1
(dedicated site) and Type 2 (Confined Marine Disposal) |
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 twenty-nine monitoring events were
undertaken in which two Action Level exceedances and no Limit Level exceedances
for 1-hr TSP; no Action Level exceedances or Limit Level exceedances for 24-hr
TSP were recorded. (Table
2.15). Further to the
investigation, the recorded exceedances for air quality monitoring were
considered to be sporadic event from the cumulative anthropogenic activities (eg traffic emissions from River Trade Terminal) in this
area of Hong Kong. Detailed
investigation findings were presented in Appendix
L of the Fourteenth to Sixteenth Monthly EM&A Report.
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 |
20141217 |
- |
1 |
0 |
Limit Level |
- |
- |
0 |
0 |
|
ASR1 |
Action Level |
- |
- |
0 |
0 |
Limit Level |
- |
- |
0 |
0 |
|
ASR5 |
Action Level |
20141202 |
- |
1 |
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: |
2 |
0 |
|||
Total number of Limit level Exceedances: |
0 |
0 |
For
marine water quality impact monitoring, a total of thirty-seven monitoring
events were undertaken in which no 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 (mg/L)
Station |
Baseline Mean |
Ambient Mean (a) |
Quarterly
Mean (December 2014 to February 2015) |
|||
Mid-ebb |
Mid-flood |
Mid-ebb |
Mid-flood |
Mid-ebb |
Mid-flood |
|
CS4 |
10.2 |
9.0 |
13.3 |
11.7 |
7.5 |
7.5 |
CS6 |
10.9 |
11.7 |
14.1 |
15.2 |
7.6 |
7.5 |
IS12 |
9.2 |
9.5 |
12.0 |
12.3 |
7.5 |
7.5 |
IS13 |
10.0 |
10.5 |
13.0 |
13.7 |
7.5 |
7.4 |
IS14 |
10.4 |
9.7 |
13.5 |
12.6 |
7.5 |
7.5 |
IS15 |
9.6 |
11.0 |
12.5 |
14.2 |
7.5 |
7.4 |
SR10A |
10.3 |
10.2 |
13.3 |
13.3 |
7.4 |
7.4 |
SR8 |
10.1 |
11.3 |
13.1 |
14.7 |
7.4 |
7.3 |
SR9 |
8.8 |
9.9 |
11.4 |
12.8 |
7.4 |
7.4 |
Mean
value |
10.0 |
10.3 |
13.0 |
13.4 |
7.5 |
7.4 |
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
Limit Level exceedance 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 the Updated EM&A Manual, there
is no evidence showing that the sources of impact directly related to the
construction works under this Contract that may have affected the dolphin usage
in the NEL region. Detailed investigation
findings are presented in Appendix J.
Cumulative
statistics are provided in Appendix J.
The
Environmental Complaint Handling Procedure is provided in Figure 2.4.
No
non-compliance event was recorded during the reporting period.
No environmental
complaint was received in the reporting period.
No
summons/ prosecution was received during 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 |
Land-based
Works |
·
Diaphragm Wall Construction for Ventilation Shaft at
Works Area – Portion N-C; ·
TBM Platform Construction at Works Area – Portion
N-A; ·
Maintenance of armor rocks at Works Area – Portion
N-A; ·
Delivery & Assembly of TBM at Works Area –
Portion N-A and, ·
Set up of Slurry Treatment Plant at Works Area –
Portion N-C. |
Potential
environmental impacts arising from the above upcoming construction activities
are mainly associated with dust, marine ecology and waste management issues.
Impact
monitoring for air quality, marine water quality and marine ecology (include
dolphin monitoring) are scheduled to continue for the next reporting period.
This
Fifth Quarterly EM&A Report presents the findings of the EM&A
activities undertaken during the period from 1 December 2014 to 28 February
2015, in accordance with the Updated EM&A Manual and the requirements of EP-354/2009/C.
Air
quality (including 1-hour TSP and 24-hour TSP), marine water quality and dolphin
monitoring were carried out in the reporting period. Two Action Level exceedances for
1-hr TSP were recorded from the air quality monitoring in this reporting
period. No Limit Level exceedances for
1-hr TSP were recorded. No Action or
Limit Level exceedances for 24-hr TSP were record. No Action Level or Limit Level
exceedances were recorded in marine water quality impact monitoring during the
reporting period. Investigation findings
suggested that the observed exceedances for air
quality monitoring were considered to be sporadic event from the cumulative
anthropogenic activities (eg traffic emissions from
River Trade Terminal) in this area of Hong Kong. Nevertheless, the Contractor was reminded to
ensure that all dust mitigation measures are provided at the construction sites.
A
total of 15 groups of 52 Chinese White Dolphin sightings
were recorded during the six sets of surveys from December 2014 to February 2015. Whilst one Limit Level exceedance was
recorded for the quarterly dolphin monitoring data between December 2014 and February
2015, 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 improve the situation.
Thirteen
weekly environmental site inspections were carried out in the reporting period. Recommendations on remedial actions provided
for the deficiencies identified during the site audits were properly
implemented by the Contractor. No
non-compliance event was recorded during the reporting period.
No
environmental complaint was received during the reporting period.
No
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.