TABLE OF
CONTENTS
Executive Summary
1 Introduction
1.1 Background
1.2 Scope of Report
1.3 Organization Structure
1.4 Summary of Construction Works
1.5 Summary of EM&A Programme Requirements
2 EM&A RESULTS
2.1 Air Quality
2.2 Noise Monitoring
2.3 Water Quality Monitoring
2.4 Dolphin 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 Future Key Issues
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
4.1 Conclusions
List of Appendices
Appendix A Project
Organization for Environmental Works
Appendix B Three
Month Rolling Construction Programmes
Appendix C Implementation
Schedule of Environmental Mitigation Measures (EMIS)
Appendix D Summary
of Action and Limit Levels
Appendix E EM&A
Monitoring Schedules
Appendix F Impact
Air Quality Monitoring Results and Graphical Presentation
Appendix G Impact
Noise Monitoring Results and Graphical Presentation
Appendix H Impact
Water Quality Monitoring Results and Graphical Presentation
Appendix I Impact
Dolphin Monitoring Survey Results
Appendix J Event
Action Plan
Appendix K Quarterly
Summary of Waste Flow Table
Appendix L Cumulative
Statistics on Exceedances, Complaints, Notifications of Summons and Successful
Prosecutions
Executive Summary
Under Contract No. HY/2012/07, Gammon
Construction Limited (GCL) is commissioned by the Highways Department (HyD) to
undertake the design and construction of the Southern Connection Viaduct
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). Ramboll Hong Kong Ltd. was employed by the HyD as the Independent
Environmental Checker (IEC) and Environmental Project Office (ENPO) in
accordance with Environmental Permit No. EP-354/2009/A. Further
applications for variation of environmental permit (VEP), EP-354/2009/B,
EP-354/2009/C and EP-354/2009/D, were granted on 28 January 2014, 10
December 2014 and 13 March 2015, respectively.
The southern landfall of TM-CLK Link lies
alongside the Hong Kong - Zhuhai - Macao Bridge Hong Kong Boundary Crossing
Facilities (HKBCF) where a reclamation area is constructed by Contract No.
HY/2010/02 under Environmental Permit No. EP-353/2009/K and
EP-354/2009/D. Upon the agreement and confirmation between the Supervising
Officer Representatives and Contractors of HY/2010/02 and HY/2012/07
in September 2015, part of the reclamation area for southern landfall under EP-353/2009/K
and EP-354/2009/D was handed-over to Contract No. HY/2012/07.
Another part of the southern landfall area under EP-354/2009/D was
handed-over to Contract No. HY/2012/07 after completion of reclamation
works by Contract No. HY/2010/02 in June 2016.
The construction phase of the Contract
commenced on 31 October 2013 and will be tentatively completed by 2019. The
impact monitoring of the EM&A programme, including air quality, noise,
water quality and marine ecological monitoring as well as environmental site
inspections, commenced on 31 October 2013.
This is the Twenty-third Quarterly EM&A Report
presenting the EM&A works carried out during the period from 1 June to 31 August
2019 for the Southern
Connection Viaduct Section in accordance with the Updated EM&A Manual of the TM-CLK Link Project. As informed
by the Contractor, major activities in the reporting period included:
June 2019
Marine-based Works
·
Reinstatement
of seawall at Seafront
Land-based Works
·
At-grade
works at HKBCF; and
·
Landscaping
softwork.
July 2019
Land-based Works
·
Reinstatement
of seawall at Seafront.
August 2019
There are no major works undertaken in August
2019.
A summary of monitoring and audit activities
conducted in the reporting period is listed below:
24-hour
TSP monitoring 16 sessions
1-hour
TSP monitoring 17 sessions
Noise monitoring
17 sessions
Water quality monitoring 36
sessions
Dolphin monitoring 6
sessions
Joint Environmental site inspection 13 sessions
Breaches of Action and Limit Levels for Air
Quality
One (1) Limit Level exceedance of 1-hour TSP
was recorded for construction air quality monitoring in the reporting period.
No exceedance of Action and Limit Levels of 24-hour TSP was recorded in the
reporting period.
Breaches of Action and Limit Levels for Noise
No exceedance of Action and Limit Levels was
recorded for construction noise monitoring in the reporting period.
Breaches of Action and Limit Levels for Water
Quality
A total of thirty one (31) Action Level
exceedances and three (3) Limit Level exceedances of bottom-depth dissolved
oxygen (DO) and fifteen (15) Action Level exceedance of surface and
middle-depth DO were recorded for water quality impact monitoring in the
reporting period.
Impact Dolphin Monitoring
One (1) Limit Level exceedance was observed
for the quarterly dolphin monitoring data between June to August 2019. No
unacceptable impact from the construction activities of the TM-CLKL Southern
Connection Viaduct Section on Indo-Pacific humpback dolphin Sousa chinensis (i.e. Chinese
White Dolphins) was noticeable from general observations during the dolphin
monitoring in this reporting quarter.
Daily marine mammal exclusion zone
monitoring was undertaken during the period of marine works under this
Contract. Exclusion
zone monitoring was undertaken in June 2019 and no sighting of the
Chinese White Dolphin was recorded. No marine works were undertaken in July
and August 2019, therefore, daily 250m marine mammal exclusion zone monitoring
was not undertaken in July and August 2019. No Passive Acoustic
Monitoring (PAM) was implemented as the marine piling works were not carried
out outside the daylight hours in this reporting period.
Environmental Complaints, Non-compliance &
Summons
There was no environmental complaint, notification
of summons or successful prosecution recorded in the reporting period.
Reporting Change
There was no reporting change in this reporting
period.
Upcoming Works for the
Next Reporting Period
Works to be undertaken in the coming quarter include
the following:
September 2019
There are no major works to be undertaken in
the next monitoring period of September 2019.
October 2019
There are no major works to be undertaken in
the next monitoring period of October 2019.
November 2019
There are no major works to be undertaken in
the next monitoring period of November 2019.
Future Key Issues
Potential environmental impacts arising
from the above upcoming construction activities in the coming quarterly period
are mainly associated with waste management issue.
1
Introduction
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 (EP-354/2009A) was issued on 8 December
2010. Further
applications for variation of environmental permit (VEP), EP-354/2009/B,
EP-354/2009/C and EP-354/2009/D, were granted on 28 January 2014, 10
December 2014 and 13 March 2015, respectively.
Under Contract No.
HY/2012/07, Gammon Construction Limited (GCL) is commissioned by the
Highways Department (HyD) to undertake the design and construction of the
Southern Connection Viaduct Section of TM-CLKL (“the Contract”) while AECOM Asia Company
Limited was appointed by HyD as the Supervising Officer. For implementation of
the environmental monitoring and audit (EM&A) programme under the Contract,
ERM-Hong Kong, Limited (ERM) has been appointed as the Environmental Team (ET).
Ramboll Hong Kong Ltd. was employed by HyD as the Independent Environmental
Checker (IEC) and Environmental Project Office (ENPO) in accordance with Environmental
Permit No. EP-354/2009/A.
The southern landfall
of TM-CLK Link lies alongside the Hong Kong - Zhuhai - Macao Bridge Hong Kong
Boundary Crossing Facilities (HKBCF) where a reclamation area is constructed by
Contract No. HY/2010/02 under Environmental Permit No. EP-353/2009/K and
EP-354/2009/D. Upon the agreement and confirmation between the Supervising
Officer Representatives and Contractors of HY/2010/02 and HY/2012/07
in September 2015, part of the reclamation area for southern landfall under EP-353/2009/K
and EP-354/2009/D was handed-over to Contract No. HY/2012/07. Another
part of the southern landfall area under EP-354/2009/D was handed-over
to Contract No. HY/2012/07 after completion of reclamation works by Contract
No. HY/2010/02 in June 2016.
The construction phase of the Contract commenced on 31
October 2013 and will be tentatively be completed by 2019. The impact
monitoring phase of the EM&A programme, including air quality, noise, water
quality and marine ecological monitoring as well environmental site
inspections, commenced on 31 October 2013.
The general layout plan
of the Contract components is presented in Figures 1.1 & 1.2a to l.
1.2
Scope of Report
This is the Twenty-third Quarterly EM&A Report under the Contract
No. HY/2012/07 Tuen Mun – Chek Lap Kok Link
– Southern Connection Viaduct Section. This
report presents a summary of the environmental monitoring and audit works from 1
June to 31 August 2019.
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
|
|
HyD (Highways Department)
|
Project Coordinator
|
Stanley Chan
|
2762 3406
|
3188 6614
|
|
|
Senior Engineer
|
Steven Shum
|
2762 4133
|
3188 6614
|
|
SOR
(AECOM Asia Company Limited)
|
Chief Resident Engineer
|
Daniel Ip
|
3553 3800
|
2492 2057
|
|
|
Resident Engineer
|
Chan Wah Fu
|
2293 6434
|
3691 2899
|
|
|
Resident Engineer
|
Ivan Yim
|
3691 3950
|
3691 2899
|
|
|
|
|
|
|
|
ENPO / IEC
(Ramboll Hong Kong
Ltd.)
|
ENPO Leader
|
Y.H. Hui
|
3465
2850
|
3465 2899
|
|
IEC
|
Dr. F.C. Tsang
|
3465
2851
|
3465 2899
|
|
Contractor
(Gammon Construction
Limited)
|
Environmental Officer
|
Roy Leung
|
3520 0387
|
3520 0486
|
|
|
24-hour Complaint Hotline
|
|
9738 4332
|
|
|
ET (ERM-HK)
|
ET Leader
|
Dr. Jasmine Ng
|
2271 3311
|
2723 5660
|
The construction phase of the Contract commenced on 31
October 2013. The rolling construction programme for the period of June to August 2019 is shown in Appendix B.
As informed by the Contractor, details of the major works
carried out in this reporting period are listed below:
June
2019
Marine-based Works
·
Reinstatement
of seawall at Seafront
Land-based Works
·
At-grade
works at HKBCF; and
·
Landscaping
softwork.
July 2019
Land-based Works
·
Reinstatement
of seawall at Seafront.
August 2019
There are no major
works undertaken in August 2019.
The locations of the
construction activities are shown in Figure 1.3. The Environmental
Sensitive Receivers in the vicinity of the Project are shown in Figure 1.4.
The environmental mitigation measures implementation
schedule is presented in Appendix
C.
The EM&A programme
required environmental monitoring for air quality, noise, 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
described in the following sections, which include:
·
Monitoring
parameters;
·
Monitoring
schedules for the reporting months and forthcoming months;
·
Action
and Limit levels for all environmental parameters;
·
Event
Action Plan;
·
Results
and observations;
·
Environmental
mitigation measures, as recommended in the approved EIA Report; and
·
Environmental
requirement in contract documents.
Figure
1.3 Locations
of Construction Activities in the Reporting Period
2
EM&A
RESULTS
The EM&A programme
required environmental monitoring for air quality, noise, 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.
The baseline air
quality monitoring undertaken by the HZMB Projects during October 2011 included
the two monitoring stations ASR9A and ASR9C for this Project. Thus, the
baseline monitoring results and Action/Limit Level presented in HZMB Baseline
Monitoring Report () are adopted for
this Project.
2.1.1
Monitoring
Requirements and Equipment
In accordance with the Updated EM&A Manual, impact
1-hour TSP monitoring was conducted three (3) times every six (6) days while
the highest dust impact was expected. Impact 24-hour TSP monitoring was
carried out once every six (6) days. The Action and Limit Levels of the air
quality monitoring is provided in Appendix D.
1-hour TSP and 24-hour
TSP monitoring were conducted at 2 alternative air quality monitoring stations,
ASR8A (Area 4) and ASR9 (entrance of MTR Depot) during the reporting period in
accordance with the requirement of the Updated EM&A Manual. The monitoring
stations are indicated in Figure
2.1 and details are presented in Table 2.1.
High Volume Samplers
(HVSs) were used for carrying out 1-hour and 24-hour TSP monitoring during the
reporting period. The HVSs meets all requirements of the Updated EM&A
Manual. Brand and model of the equipment are given in Table 2.2.
Wind data monitoring
equipment was installed at Area 4 during the reporting period for logging wind
speed and wind direction. The wind sensor was setup such that it was clear of
obstructions or turbulence caused by building. The wind data monitoring
equipment is recalibrated at least once every six months.
Table
2.1 Locations
of Impact Air Quality Monitoring Stations and Monitoring Dates in this Reporting
Period
|
Monitoring Station (1)
|
Monitoring Period (2)
|
Location
|
Description
|
Parameters & Frequency
|
|
ASR8A
|
4,
10, 13, 19, 25 and 28 June 2019
4, 10, 16, 22, 25 and 31 July
2019
6,
12, 15, 21 and 27 August 2019
|
Area 4
|
On ground at the works area,
Area 4
|
Ÿ 1-hour Total
Suspended Particulates (1-hour TSP, µg/m3), 3 times per day every
6 days
Ÿ 24-hour Total
Suspended Particulates (24-hour TSP, µg/m3), daily for 24-hour
every 6 days
|
|
ASR9
|
4,
10, 13, 19, 25 and 28 June 2019
4, 10 and 16 July 2019
|
MTR Depot
|
On the ground nearby MTR
Depot entrance
|
(1)
Air
Quality Monitoring Stations ASR9A and ASR9C at Siu Ho Wan MTRC Depot proposed
in accordance with the Updated EM&A were relocated to ASR9 and ASR8A respectively.
(2)
Air
quality monitoring of 1-hour and 24-hour TSP at ASR9 was cancelled on 22, 25,
31 July and in August due to power shortage while air quality monitoring of
24-hour TSP at ASR8A was cancelled on 31 July 2019 due to adverse weather.
Table
2.2 Air Quality
Monitoring Equipment
|
Equipment
|
Brand
and Model
|
|
High
Volume Sampler
(1-hour TSP and 24-hour TSP)
|
Tisch
Environmental Mass Flow Controlled Total Suspended Particulate
(TSP) High Volume Sampler (Model No. TE-5170)
|
|
Wind
Sensor
|
Global
Water (Wind Speed Sensor: WE550; Wind Direction Sensor: WE570)
|
|
Wind
Anemometer for calibration
|
Lutron
(Model No. AM-4201)
|
2.1.2
Action
& Limit Levels
The Action and Limit
Levels of the air quality monitoring are provided in Appendix D. The Event
and Action plan is presented in Appendix J.
2.1.3
Monitoring
Schedule for the Reporting Quarter
The schedules for air
quality monitoring in the reporting quarter are provided in Appendix E. Air quality
monitoring of 1-hour and 24-hour TSP at ASR9 was cancelled on 22, 25, 31 July
and in August due to power shortage while air quality monitoring of 24-hour TSP
at ASR8A was cancelled on 31 July 2019 due to adverse weather. There are no
construction works under this Contract starting in August 2019. EPD have
approved the temporary suspension of Air Quality Monitoring on 28 August 2019.
2.1.4
Results
and Observations
The monitoring results
for 1-hour TSP and 24-hour TSP are summarized in Tables 2.3 and 2.4,
respectively. Monitoring results are presented graphically in Appendix F. Detailed
impact air quality monitoring results and meteorological information were reported
in the Sixty-eighth
to Seventieth Monthly EM&A Reports.
Table
2.3 Summary
of 1-hour TSP Monitoring Results in this Reporting Period
|
Month
|
Station
|
Average
(µg/m3)
|
Range
(µg/m3)
|
Action
Level (µg/m3)
|
Limit
Level (µg/m3)
|
|
June
2019
|
ASR 8A
|
35
|
14-95
|
394
|
500
|
|
ASR 9
|
109
|
14-752
|
393
|
500
|
|
July
2019
|
ASR 8A
|
48
|
14-138
|
394
|
500
|
|
ASR 9
|
63
|
15-96
|
393
|
500
|
|
August 2019
|
ASR 8A
|
53
|
14-144
|
394
|
500
|
Table
2.4 Summary
of 24-hour TSP Monitoring Results in this Reporting Period
|
Month
|
Station
|
Average
(µg/m3)
|
Range
(µg/m3)
|
Action
Level (µg/m3)
|
Limit
Level (µg/m3)
|
|
June
2019
|
ASR 8A
|
25
|
16-39
|
178
|
260
|
|
ASR 9
|
62
|
22-152
|
178
|
260
|
|
July
2019
|
ASR 8A
|
29
|
19-42
|
178
|
260
|
|
ASR 9
|
41
|
33-48
|
178
|
260
|
|
August 2019
|
ASR 8A
|
34
|
26-39
|
178
|
260
|
The major dust sources in
the reporting period include construction activities under the Contract as well
as nearby traffic emissions.
One (1) Limit Level
exceedance of 1-hour TSP was recorded for air quality monitoring in this
reporting period. No
exceedance of Action and Limit Levels of 24-hour TSP was recorded in the
reporting period. The exceedance was considered not related to this Contract
upon further investigation and the investigation report is presented in Appendix L. No action is thus
required to be undertaken in accordance with the Event Action Plan presented in
Appendix J.
The baseline noise
monitoring undertaken by the HZMB Projects during the period of 18 October to 1
November 2011 included the monitoring station NSR1 for this Project. Thus, the
baseline monitoring results and Action/ Limit Level presented in HZMB
Baseline Monitoring Report () are adopted for
this Project.
2.2.1
Monitoring
Requirements and Equipment
In accordance with the
Updated EM&A Manual, impact noise monitoring should be conducted once per
week during the construction phase of the Contract.
Noise monitoring was
conducted at the alternative noise monitoring station, NSR1A (Pak Mong Village
Pavilion) during the reporting period in accordance with the requirement of
Updated EM&A Manual. Figure
2.2 shows the location of the monitoring station. Table 2.5
describes the details of the monitoring station.
Noise monitoring was
performed using sound level meter at the designated monitoring station in the
reporting quarter. The deployed sound level meter complies with the
International Electrotechnical Commission Publications (IEC) 651:1979 (Type 1)
and 804:1985 (Type 1) specifications. Acoustic calibrator was deployed to
check the sound level meter at a known sound pressure level. Brand and model of the
equipment is given in Table 2.6.
Table
2.5 Location of Impact Noise Monitoring Station and Monitoring Dates in
this Reporting Period
|
Monitoring Station
|
Monitoring Period
|
Location
|
Parameters & Frequency
|
|
NSR1A
|
4,
10, 13, 19, 25 and 28 June 2019
4,
10, 16, 22, 25 and 31 July 2019
6,
12, 15, 21 and 27 August 2019
|
Pak Mong Village Pavilion
|
Ÿ 30-mins
measurement at each monitoring station between 0700 and 1900 on normal
weekdays (Monday to Saturday). Leq, L10 and L90 would
be recorded.
Ÿ At
least once a week
|
|
Note:
(1) Noise Monitoring
Station NSR1 at Pak Mong Village proposed in accordance with the Updated
EM&A Manual was relocated to NSR1A.
|
Table
2.6 Noise Monitoring Equipment
2.2.2
Action
and Limit Levels
The Action and Limit
levels of the noise monitoring are provided in Appendix D. The Event
and Action plan is presented in Appendix J.
2.2.3
Monitoring
Schedule for the Reporting Quarter
The schedule for
construction noise monitoring in the reporting period is provided in Appendix E. EPD have
approved the temporary suspension of Impact Noise Monitoring on 28 August
2019.
2.2.4
Results
and Observations
The monitoring results
for noise monitoring are summarized in Table 2.7. Monitoring results
are presented graphically in Appendix G and detailed impact noise monitoring results
are reported in the
Sixty-eighth to Seventieth Monthly EM&A Reports.
Table
2.7 Summary of Construction Noise Monitoring Results at NSR1A in the
Reporting Period
|
Month
|
Average
, dB(A), Leq (30mins)
|
Range,
dB(A), Leq (30mins)
|
Limit
Level, dB(A), Leq (30mins)
|
|
June 2019
|
63
|
62-63
|
75
|
|
July 2019
|
63
|
62-65
|
75
|
|
August
2019
|
63
|
62-63
|
75
|
Major noise sources
during the noise monitoring included noise from nearby traffic noise and aircraft
noise.
All noise monitoring
results were below the Action and Limit Levels in the reporting period. No
action is thus required to be undertaken in accordance with the Event Action
Plan presented in Appendix
J.
The baseline water
quality monitoring undertaken by the HZMB Projects between 6 and 31 October
2011 included all monitoring stations except SR4a for the Project. Thus, the
baseline monitoring results except for station SR4a and Action/Limit Level
presented in HZMB Baseline Monitoring Report () are adopted for
this Project. Baseline water quality monitoring was conducted at station SR4a
from 29 August to 24 September 2013.
2.3.1
Monitoring
Requirements and Equipment
Impact water quality monitoring was carried out to
ensure that any deterioration of water quality was detected, and that timely
action was taken to rectify the situation. Impact water quality monitoring was
undertaken three days per week during the construction period at seven water
quality monitoring stations in accordance with the Updated EM&A Manual.
Results of water
quality monitoring were adopted from the published EM&A data of Contract
No. HY/2012/08 Tuen Mun-Chek Lap Kok Link – Northern Connection Sub-sea Tunnel
Section () in July
and August 2019.
The locations of the
monitoring stations under the Contract are shown in Figure 2.3 and Table
2.8.
Table
2.8 Locations
of Water Quality Monitoring Stations and the Corresponding Monitoring
Requirements
|
Station ID
|
Type
|
Coordinates
|
*Parameters,
unit
|
Depth
|
Frequency
|
|
|
|
Easting
|
Northing
|
|
|
|
|
IS(Mf)9
|
Impact
Station (Close to HKBCF construction site)
|
813273
|
818850
|
Ÿ Temperature(°C)
Ÿ pH(pH unit)
Ÿ Turbidity (NTU)
Ÿ Water depth (m)
Ÿ Salinity (ppt)
Ÿ Dissolved Oxygen (DO)
(mg/L and % of
saturation)
· Suspended Solid (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.
|
|
IS(Mf)16
|
Impact Station (Close
to HKBCF construction site)
|
814328
|
819497
|
|
IS8
|
Impact Station(Close
to HKBCF construction site)
|
814251
|
818412
|
|
IS8 (N)
|
Impact Station (Close
to HKBCF construction site)
|
814413
|
818570
|
|
SR4(N)
|
Sensitive receiver
(Tai Ho Inlet)
|
814705
|
817859
|
|
SR4(N2)
|
Sensitive receiver
(Tai Ho Inlet)
|
814688
|
817996
|
|
SR4a
|
Sensitive
receiver
|
815247
|
818067
|
|
CS(Mf)3(N)
|
Control Station
|
808814
|
822355
|
|
CS(Mf)5
|
Control Station
|
817990
|
821129
|
|
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.
Water Quality
Monitoring Station CS(Mf)3 was relocated to CS(Mf)3(N) since 2 May 2017.
Water Quality Monitoring
Station SR4 was relocated to SR4(N) since 2 March 2018.
Water
Quality Monitoring Station SR4(N) was relocated to SR4(N2) since 12 June 2019
Water
Quality Monitoring Station IS8 was relocated to IS8(N) since 12 June 2019.
|
Table 2.9 summarizes the equipment
used in the impact water quality monitoring programme.
Table
2.9 Water Quality Monitoring Equipment
|
Equipment
|
Brand and Model
|
|
Multi-parameters
(Dissolved Oxygen,
Salinity, Turbidity, Temperature, pH)
|
YSI ProDSS
|
|
Positioning Equipment
|
Furuno GP-170
|
|
Water Depth Detector
|
Lowrance Mark 5x /
Garmin Striker 4
|
|
Water Sampler
|
WildCo Vertical Alpha
Bottles 1120-2.2L /1120-3.2L
Aquatic Research
Instrument Vertical/Horizontal Point Water Sampler 2.2L / 3.0L
|
2.3.2
Action
& Limit Levels
The Action and Limit Levels of the water quality
monitoring are provided in Appendix D.
2.3.3
Monitoring
Schedule for the Reporting Quarter
The schedules for water
quality monitoring in the reporting quarter are provided in Appendix E. Water
quality monitoring on 7 June 2019 was cancelled due to suspension of marine
works during holiday. EPD have approved the temporary suspension of
Water Quality Monitoring on 30 August 2019 as all marine-based construction
activities under this Contract has been completed.
2.3.4
Results
and Observations
In this reporting
period, a total of 36 monitoring events for
impact water quality monitoring were conducted at monitoring stations in the
reporting period. Monitoring results are presented graphically in Appendix H and
detailed impact water quality monitoring results were reported in the Sixty-eighth to Seventieth Monthly EM&A Reports.
A total of thirty one
(31) Action Level exceedances and three (3) Limit Level exceedances of
bottom-depth dissolved oxygen (DO) and fifteen (15) Action Level exceedance of
surface and middle-depth DO were recorded for water quality impact monitoring
in the reporting period.
The exceedances were considered not related to this Contract
upon further investigation and the investigation report is presented in Appendix L. No actions was required
to be undertaken in accordance with the Event Action Plan as presented in Appendix J.
2.4.1
Monitoring
Requirements
Impact dolphin
monitoring is required to be conducted by a qualified dolphin specialist team
to evaluate whether there have been any effects on the Indo-Pacific humpback
dolphin Sousa chinensis (i.e. Chinese White Dolphin) from the
Contract. In order to fulfil the EM&A requirements and make good use of
available resources, the on-going impact line transect dolphin monitoring data
collected by HyD’s Contract No. HY/2011/03 Hong Kong-Zhuhai-Macao
Bridge. Hong Kong Link Road - Section between Scenic Hill and Hong Kong
Boundary Crossing Facilities on the monthly basis is adopted to avoid
duplicates of survey effort.
2.4.2
Monitoring
Equipment
Table 2.10 summarizes the
equipment used for the impact dolphin monitoring.
Table
2.10 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
|
2.4.3
Monitoring
Parameter, Frequencies & Duration
Dolphin monitoring
should cover all transect lines in Northeast Lantau (NEL) and the Northwest
Lantau (NWL) survey areas twice per month throughout the entire construction
period. The monitoring data should be compatible with, and should be made
available for, long-term studies of small cetacean ecology in Hong Kong. In
order to provide a suitable long-term dataset for comparison, identical
methodology and line transects employed in baseline dolphin monitoring was
followed in the impact dolphin monitoring.
2.4.4
Monitoring
Location
The impact dolphin
monitoring was carried out in the NEL and NWL along the line transect as
depicted in Figure 2.4.
The co-ordinates of all transect lines are shown in Table 2.11 below ().
Table
2.11 Impact
Dolphin Monitoring Line Transect Co-ordinates
|
Line No.
|
Easting
|
Northing
|
Line No.
|
Easting
|
Northing
|
|
1
|
Start
Point
|
804671
|
815456
|
13
|
Start
Point
|
816506
|
819480
|
|
1
|
End
Point
|
804671
|
831404
|
13
|
End
Point
|
816506
|
824859
|
|
2
|
Start
Point
|
805476
|
820800
|
14
|
Start
Point
|
817537
|
820220
|
|
2
|
End
Point
|
805476
|
826654
|
14
|
End
Point
|
817537
|
824613
|
|
3
|
Start
Point
|
806464
|
821150
|
15
|
Start
Point
|
818568
|
820735
|
|
3
|
End
Point
|
806464
|
822911
|
15
|
End
Point
|
818568
|
824433
|
|
4
|
Start
Point
|
807518
|
821500
|
16
|
Start
Point
|
819532
|
821420
|
|
4
|
End
Point
|
807518
|
829230
|
16
|
End
Point
|
819532
|
824209
|
|
5
|
Start
Point
|
808504
|
821850
|
17
|
Start
Point
|
820451
|
822125
|
|
5
|
End
Point
|
808504
|
828602
|
17
|
End
Point
|
820451
|
823671
|
|
6
|
Start
Point
|
809490
|
822150
|
18
|
Start
Point
|
821504
|
822371
|
|
6
|
End
Point
|
809490
|
825352
|
18
|
End
Point
|
821504
|
823761
|
|
7
|
Start
Point
|
810499
|
822000
|
19
|
Start
Point
|
822513
|
823268
|
|
7
|
End
Point
|
810499
|
824613
|
19
|
End
Point
|
822513
|
824321
|
|
8
|
Start
Point
|
811508
|
821123
|
20
|
Start
Point
|
823477
|
823402
|
|
8
|
End
Point
|
811508
|
824254
|
20
|
End
Point
|
823477
|
824613
|
|
9
|
Start
Point
|
812516
|
821303
|
21
|
Start
Point
|
805476
|
827081
|
|
9
|
End
Point
|
812516
|
824254
|
21
|
End
Point
|
805476
|
830562
|
|
10
|
Start
Point
|
813525
|
821176
|
22
|
Start
Point
|
806464
|
824033
|
|
10
|
End
Point
|
813525
|
824657
|
22
|
End
Point
|
806464
|
829598
|
|
11
|
Start
Point
|
814556
|
818853
|
23
|
Start
Point
|
814559
|
821739
|
|
11
|
End
Point
|
814556
|
820992
|
23
|
End
Point
|
814559
|
824768
|
|
12
|
Start
Point
|
815542
|
818807
|
24
|
Start
Point
|
805476
|
815900
|
|
12
|
End
Point
|
815542
|
824882
|
24
|
End
Point
|
805476
|
819100
|
2.4.5
Action
& Limit Levels
The Action and Limit levels
of dolphin impact monitoring are shown in Appendix D. The Event and Action plan is presented in Appendix J.
2.4.6
Monitoring
Schedule for the Reporting Period
The dolphin monitoring
schedules for the reporting period are shown in Appendix E
.
2.4.7
Results & Observations
A total of 785.23 km of survey effort was
collected, with 96.0% of the total survey
effort being conducted under favourable weather conditions (i.e. Beaufort Sea
State 3 or below with good visibility). Among the two areas, 287.33 km and 497.90 km of survey effort
were conducted in NEL and NWL survey areas respectively. The total survey
effort conducted on primary lines was 577.21 km, while the effort on
secondary lines was 208.02 km. Survey effort conducted on both primary
and secondary lines were considered as on-effort survey data. The survey
efforts are summarized in Appendix
I.
During the six sets of
monitoring surveys in June to August 2019,
a total of
four (4) groups of eight (8) Chinese White Dolphins
were sighted. Three
(3) dolphin
sightings were made during on-effort and two (2) on-effort dolphin sightings were made on
primary lines. In this quarterly period, all dolphin groups were sighted in
NWL, no sighting of dolphin was sighted in NEL. Summary table of the dolphin
sightings is shown in Appendix II of Appendix I.
Encounter rates of
Chinese White Dolphins deduced from the survey effort and on-effort sighting
data from the primary transect lines under favourable conditions (Beaufort 3 or
below) in the reporting period with the results presented in Tables 2.12 and
2.13.
Table
2.12 Individual Survey Event Encounter Rates
|
Survey Area
|
Survey
period
|
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: 3rd / 6th
Jun 2019
|
0.0
|
0.0
|
|
Set
2: 10th / 13th
Jun 2019
|
0.0
|
0.0
|
|
Set
3: 16th /18th Jul 2019
|
0.0
|
0.0
|
|
Set
4: 22nd/ 24th Jul 2019
|
0.0
|
0.0
|
|
Set
5: 13th / 14th Aug 2019
|
0.0
|
0.0
|
|
Set
6: 20th/ 26th/ 29th Aug 2019
|
0.0
|
0.0
|
|
NWL
|
Set
1: 3rd / 6th
Jun 2019
|
3.73
|
9.32
|
|
Set
2: 10th / 13th
Jun 2019
|
0.00
|
0.00
|
|
Set
3: 16th /18th Jul 2019
|
0.00
|
0.00
|
|
Set
4: 22nd/ 24th Jul 2019
|
0.00
|
0.00
|
|
Set
5: 13th / 14th Aug 2019
|
0.00
|
0.00
|
|
Set
6: 20th/ 26th/ 29th Aug 2019
|
0.00
|
0.00
|
Note:
Dolphin Encounter Rates are deduced from the six sets of surveys (two surveys
in each set) in the reporting period in Northeast (NEL) and Northwest Lantau
(NWL)
Table
2.13 Quarterly Average Encounter Rates
|
Survey Area
|
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)
|
|
June - August 2019
|
September -November 2011
|
June - August 2019
|
September -November 2011
|
|
Northeast
Lantau
|
0.0
|
6.00
± 5.05
|
0.0
|
22.19
± 26.81
|
|
Northwest
Lantau
|
0.62 ± 1.52
|
9.85
± 5.85
|
1.55 ± 3.80
|
44.66
± 29.85
|
Note:
encounter rates deduced from the baseline monitoring period (September –
November 2011) 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 one (1) to four (4) individuals
per group in North Lantau region during June to August 2019. 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 2.14.
Table
2.14 Comparison of Quarterly Average Group Sizes
|
|
Average Dolphin Group Size
|
|
June to August 2019
|
September - November 2011
|
|
Overall
|
2.00 ± 1.41 (n = 4)
|
3.72
± 3.13 (n = 66)
|
|
Northeast Lantau
|
---
|
3.18
± 2.16 (n = 17)
|
|
Northwest Lantau
|
2.00 ± 1.41 (n = 4)
|
3.92
± 3.40 (n = 49)
|
One (1) Limit
Level exceedance was observed for the quarterly dolphin monitoring data between
June to August 2019.
During this
quarter of dolphin monitoring, no unacceptable impact from the activities of this
Contract on Chinese White Dolphins was noticeable from the general
observations.
Although the dolphins
infrequently occurred along the alignment of TM-CLKL Southern Connection
Viaduct in the past and during the baseline monitoring period, it is apparent
that dolphin usage has been significantly reduced in both NEL and NWL, and many
individuals have shifted away from the important habitat around the Brothers
Islands.
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.
2.4.8
Marine
Mammal Exclusion Zone Monitoring
Daily marine mammal
exclusion zone monitoring was undertaken in June 2019. No sighting of Chinese
White Dolphin was recorded in the monitoring period during the exclusion zone
monitoring. No marine works were undertaken in July and August 2019,
therefore, daily 250 m marine mammal exclusion zone monitoring was not
undertaken in July and August 2019.
Passive Acoustic
Monitoring (PAM) was decommissioned in this reporting period as no marine
piling works was carried out outside the daylight hours since September 2015.
Daytime marine mammal exclusion zone was still in effect to cater for temporary
staging installation and uninstallation works.
2.5
EM&A Site
Inspection
Site inspections were
carried out on a weekly basis to monitor the implementation of proper
environmental pollution control and mitigation measures under the Contract. Thirteen (13) site inspections were
carried out in the reporting quarter on 5, 12, 18 and 27 June, 4, 10, 17,
25 and 29 July
and 7,
15, 22 and 29 August 2019.
Key observations during
the site inspections in this reporting period are summarized in Table 2.15.
Table
2.15 Specific
Observations Identified during the Weekly Site Inspection in this Reporting
Period
|
Inspection Date
|
Location & Environmental
Observations
|
Recommendations/ Remarks
|
|
5 June 2019
|
Viaduct
D
Ÿ General refuse was
observed.
Ÿ Silt
was observed in the U-channel
|
Viaduct
D
Ÿ The Contractor was
reminded to clear general refuse.
Ÿ The Contractor was
reminded to clear the silt inside U-channel.
|
|
12 June 2019
|
WA4
Ÿ Chemical
without drip tray.
|
WA4
Ÿ The Contractor was
reminded to place chemicals in drip tray and remove empty chemical container
off site.
|
|
18 June 2019
|
Seafront
Ÿ The silt curtain
should be properly extended.
Viaduct
D
Ÿ Accumulated refuse
should be cleared.
Ÿ Chemical
without drip tray.
|
Seafront
Ÿ The Contractor was
reminded to properly extend the silt curtain.
Viaduct
D
Ÿ The Contractor was
reminded to clear accumulated refuse.
Ÿ The Contract was
reminded to place chemical in drip tray.
|
|
27 June 2019
|
Seafront
Ÿ NRMM label should be
displayed on the excavator.
|
Seafront
Ÿ The Contractor was
reminded to display
the
NRMM label on the excavator.
|
|
4
July 2019
|
WA1
Ÿ Tyre
marks were observed at the exit of the works area.
Ÿ Accumulated
waste should be cleared.
WA2
Ÿ Rubbish
and dirt was observed in the U-channel.
|
WA1
Ÿ The
Contractor was reminded to clear the tyre marks at the exit of the works
area.
Ÿ The
Contractor was reminded to clear the accumulated waste.
WA2
Ÿ The
Contractor was reminded to clear the rubbish and dirt in the U-channel.
|
|
10 July 2019
|
No observation.
|
No
observation.
|
|
17 July 2019
|
Viaduct D
Ÿ General
refuse is observed on the ground.
|
Viaduct D
Ÿ The
Contractor was reminded to clear general refuse on the ground.
|
|
25 July 2019
|
BCF
Ÿ Accumulated
general refuse should be cleared or disposed in rubbish bin.
|
BCF
Ÿ The
Contractor was reminded to clear accumulated general refuse or dispose them
in the rubbish bin.
|
|
29 July 2019
|
CEDD Track
Ÿ Soil
stockpile should be covered with tarpaulin or removed.
|
CEDD Track
Ÿ The
Contractor was reminded to cover soil stockpile with tarpaulin or to remove
the soil stockpile.
|
|
7 August 2019
|
BCF
Ÿ Accumulated
water in the drip tray should be discharged.
|
BCF
Ÿ The
Contractor was reminded to discharge accumulated water in the drip tray.
|
|
15 August 2019
|
Seafront
Ÿ Chemical
container was observed without drip tray.
Ÿ General
refuse was observed on the ground.
|
Seafront
Ÿ The
Contractor was reminded to place chemical container in drip tray.
Ÿ The
Contractor was reminded to place general refuse in capped rubbish bin.
|
|
22 August 2019
|
WA1
Ÿ Accumulated
waste should be cleared.
Ÿ Chemical
container should be placed in drip tray.
|
WA1
Ÿ The
Contractor was reminded to clear accumulated refuse.
Ÿ The
Contractor was reminded to place chemical container in drip tray.
|
|
29 August 2019
|
BCF
Ÿ Accumulated
refuse should be cleared or disposed in capped rubbish bin.
|
BCF
Ÿ The
Contractor was reminded to clear accumulated refuse or disposed refuse in
capped rubbish bin.
|
The Contractor has 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),
recyclable materials, chemical waste and marine sediment. 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 2.16.
Table 2.16 Quantities
of Different Waste Generated in the Reporting Period
|
Month/
Year
|
Inert
C&D Materials (a) (m3)
|
Imported
Fill (m3)
|
Inert
Construction Waste Re-used
(m3)
|
Non-inert
Construction Waste (b) (kg)
|
Recyclable
Materials (c) (kg)
|
Chemical
Wastes (kg)
|
Marine
Sediment (m3)
|
|
Category
L
|
Category
M
(Mp
& Mf)
|
Category
H
|
|
June 2019
|
356
|
0
|
315
|
39,960
|
0
|
0
|
0
|
0
|
0
|
|
July 2019
|
0
|
0
|
0
|
17,100
|
0
|
0
|
0
|
0
|
0
|
|
August 2019
|
0
|
0
|
0
|
31,050
|
0
|
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, felled trees
and others.
|
The Contractor was
advised to properly maintain on site C&D materials and waste collection, sorting
and recording system, dispose of C&D materials and wastes at designated
ground and maximize reuse/ recycle of C&D materials and wastes. The
Contractor was also reminded to properly maintain the site tidiness and dispose
of the wastes accumulated on site regularly and properly.
For chemical waste
containers, the Contractor was reminded to treat properly and store temporarily
in designated chemical waste storage area on site in accordance with the Code
of Practice on the Packaging, Labelling and Storage of Chemical Wastes.
2.7
Environmental Licenses
and Permits
The status of
environmental licensing and permit is summarized in Table 2.17 below.
Table 2.17 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-353/2009/K
|
11-Apr-16
|
N/A
|
HyD
|
Hong Kong
Boundary Crossing Facilities
|
|
Environmental
Permit
|
EP-354/2009/D
|
13-Mar-15
|
N/A
|
HyD
|
Tuen Mun-
Chek Lap Kok Link
|
|
Construction
Dust Notification
|
361571
|
05-Jul-13
|
N/A
|
GCL
|
|
|
Construction
Dust Notification
|
362093
|
17-Jul-13
|
N/A
|
GCL
|
For Area
23
|
|
Chemical
Waste Registration
|
5213-951-G2380-17
|
12-Jun-14
|
N/A
|
GCL
|
Viaducts
A, B, C, D & E
|
|
Chemical
Waste Registration
|
5213-961-G2380-13
|
10-Oct-13
|
N/A
|
GCL
|
Chemical
waste produced in Contract No. HY/2012/07 (Area 1 adjacent to Cheng Tung
Road, Siu Ho Wan)
|
|
Chemical
Waste Registration
|
5213-961-G2380-14
|
10-Oct-13
|
N/A
|
GCL
|
Chemical
waste produced in Contract No. HY/2012/07 (Area 2 adjacent to Cheung Tung
Road, Pak Mong Village)
|
|
Chemical
Waste Registration
|
5213-974-G2588-03
|
04-Nov-13
|
N/A
|
GCL
|
Chemical
waste produced in Contract No. HY/2012/07 (WA5 adjacent to Cheung Tung Road,
Yam O)
|
|
Construction
Waste Disposal Account
|
7017735
|
10-Jul-13
|
N/A
|
GCL
|
-
|
|
Construction
Waste Disposal Account
|
7019470
|
03-Mar-14
|
N/A
|
GCL
|
Vessel
CHIT Account
|
|
Construction
Noise Permit for night works and works in general holidays
|
GW-RS0149-19
|
19
February 2019
|
15
July 2019
|
GCL
|
Broad
Permit for Whole Site Areas
|
|
Construction
Noise Permit for night works and works in general holidays
|
GW-RS0507-19
|
13
June 2019
|
11
December 2019
|
GCL
|
Broad
Permit for Whole Site Areas
|
|
Construction
Noise Permit for night works and works in general holidays
|
GW-RW012-19
|
23
January 2019
|
13
June 2019
|
GCL
|
General
works at WA5
|
|
Construction
Noise Permit for night works and works in general holidays
|
GW-RW0266-19
|
21
June 2019
|
13
December 2019
|
GCL
|
General
works at WA5
|
|
Construction
Noise Permit for night works and works in general holiday
|
GW-RS0728-19
|
16
August 2019
|
25
October 2019
|
GCL
|
Defect
repairing at under-bridge of Viaduct A, B, C and D
|
|
Equipment
|
Brand and Model
|
|
Integrated Sound Level Meter
|
Rion NL-52
|
|
Acoustic Calibrator
|
Rion NC-73
|
In response to the site audit findings, the Contractor has
carried out corrective actions.
A summary of the Environmental Mitigation and Enhancement
Measure Implementation Schedules (EMIS) is presented in Appendix C. The necessary mitigation measures were implemented
properly for this Contract.
One (1) Limit Level
exceedance of 1-hour TSP was recorded for construction air quality monitoring
in the reporting period. No exceedance of Action and Limit Levels of 24-hour
TSP was recorded in the reporting period.
No Action
or Limit Level exceedance for construction noise monitoring was recorded during
the reporting period.
A total of thirty one
(31) Action Level exceedances and three (3) Limit Level exceedances of
bottom-depth dissolved oxygen (DO) and fifteen (15) Action Level exceedance of
surface and middle-depth DO were recorded for water quality impact monitoring
in the reporting period.
The construction impact
on depth-averaged SS was assessed by comparing the quarterly mean values of
depth-averaged SS with the relevant ambient mean values (Table 2.18).
The monitoring results showed that the quarterly means of depth-averaged SS at
all sampling stations during both mid-ebb and mid-flood tides were well below
the corresponding ambient means. The depth-averaged SS results suggest that
the Contract did not cause unacceptable impact on water quality in the
reporting period.
Table
2.18 Comparison
between Quarterly Mean and Ambient Mean Values of Depth-averaged Suspended
Solids
|
Station
|
Baseline
Mean
|
Ambient
Mean (a)
|
Quarterly
Mean (June to August 2019)
|
|
Mid-ebb
|
Mid-flood
|
Mid-ebb
|
Mid-flood
|
Mid-ebb
|
Mid-flood
|
|
CS(Mf)3(N) (b)
|
9.2
|
12.8
|
12.0
|
16.6
|
5.6
|
6.5
|
|
CS(Mf)5
|
9.2
|
11.5
|
11.9
|
14.9
|
5.8
|
5.1
|
|
SR4(N)/
SR4(N2) (c)(d)
|
10.3
|
12.3
|
13.4
|
16.0
|
7.6
|
6.6
|
|
SR4a
|
9.1
|
9.8
|
11.9
|
12.7
|
6.9
|
6.3
|
|
IS8/
IS8(N) (e)
|
11.3
|
13.5
|
14.6
|
17.6
|
7.8
|
6.6
|
|
IS(Mf)9
|
10.9
|
14.3
|
14.2
|
18.5
|
6.6
|
6.5
|
|
IS(Mf)16
|
11.4
|
10.3
|
14.8
|
13.4
|
7.8
|
7.1
|
|
Notes:
|
|
(a) Ambient mean value is
defined as a 30% increase of the baseline mean value
(b) Water Quality
Monitoring Station CS(Mf)3 was relocated to CS(Mf)3(N) since 2 May 2017.
(c) Water Quality
Monitoring Station SR4 was relocated to SR4(N) since 2 March 2018.
(d) Water Quality
Monitoring Station SR4(N) was relocated to SR4(N2) since 12 June 2019.
(e) Water Quality
Monitoring Station IS8 was relocated to IS8(N) since 12 June 2019.
|
One (1) Limit Level
exceedance was recorded for impact dolphin monitoring in this reporting quarter.
Following the review of the monitoring data and marine works details as per the
procedure stipulated in the Event and Action Plan of the Updated EM&A
Manual, no unacceptable impact was associated with the construction works under
this Contract that may have affected the dolphin usage in the North Lantau region.
Investigation findings were detailed in Appendix L.
The Environmental
Complaint Handling Procedure is provided in Figure 2.5.
There was no complaint,
notification of summons or successful prosecution recorded in the reporting
period.
Statistics on
complaint, notification of summons of successful prosecution are summarized in Appendix L.
3
Future
Key Issues
As informed by the Contractor, the major works for the Contract
in the coming quarter are summarized below:
September
2019
There are no major
works to be undertaken in the next monitoring period of September 2019.
October 2019
There are no major
works to be undertaken in the next monitoring period of October 2019.
November 2019
There are no major
works to be undertaken in the next monitoring period of November 2019.
3.2
Key Issues for the
Coming Quarter
Potential environmental
impacts arising from the above upcoming construction activities are mainly
associated with waste management issues.
Impact monitoring for
dolphin monitoring is scheduled to continue for the next reporting period.
Impact monitoring for
air quality and noise were temporarily suspended. EPD have approved the
temporary suspension of Air Quality Monitoring and Impact Noise Monitoring on
28 August 2019.
Impact monitoring for
marine water quality was temporarily suspended. EPD have approved the
temporary suspension of Water Quality Monitoring on 30 August 2019.
The monitoring
programme has been reviewed and was considered as adequate to cater for the
nature of works in progress.
4
Conclusions
and recommendations
The Twenty-third Quarterly
EM&A Report presents the findings of the EM&A activities undertaken
during the period from 1 June to 31 August 2019, in accordance
with the Updated EM&A Manual and the requirements of the Environmental
Permits (EP-354/2009/D and EP-353/2009/K).
One (1) Limit Level
exceedance of 1-hour TSP was recorded for construction air quality monitoring
in the reporting period. No exceedance of Action and Limit Levels of 24-hour
TSP was recorded in the reporting period.
No Action
or Limit Level exceedance for construction noise monitoring was recorded during
the reporting period.
A total of thirty one
(31) Action Level exceedances and three (3) Limit Level exceedances of
bottom-depth dissolved oxygen (DO) and fifteen (15) Action Level exceedance of
surface and middle-depth DO were recorded for water quality impact monitoring
in the reporting period.
A total of four (4) groups of eight (8) Chinese White Dolphins
were sighted during the six sets of survey from June to August 2019. One (1) Limit Level
exceedance was recorded for the quarterly dolphin monitoring data between June to August 2019, no unacceptable
impact from the activities of this Contract on Chinese White Dolphins was
noticeable from the general observations. 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.
Environmental site
inspection was carried out thirteen (13) times in the reporting
period. Recommendations on remedial actions were given to the Contractor for
the deficiencies identified during the site audits.
There was no complaint,
notification of summons or successful prosecution recorded in the reporting
period.
The monitoring
programme has been reviewed and was considered as adequate to cater for the
nature of works in progress. Change to the monitoring programme was thus not
recommended at this stage. The monitoring programme will be evaluated as appropriate
in the next reporting period. The ET will keep track on the construction works
to confirm compliance of environmental requirements and the proper
implementation of all necessary mitigation measures.