Contract
No. HY/2013/01
Hong Kong-Zhuhai-Macao Bridge
Hong Kong Boundary Crossing Facilities –
Passenger Clearance Building
Monthly EM&A Report No. 40
(Covering the Period from 1 January 2018 to 31 January 2018)
23 February 2018
Revision 3
Main Contractor Environmental
Team
Contents
Executive Summary
1.4 Construction
Works Undertaken During the Reporting Period
2...... Air Quality Monitoring
2.4 Monitoring Parameters, Frequency and Duration
2.6 Monitoring Schedule for the Reporting Month
3.4 Monitoring Parameters, Frequency and Duration
3.6 Monitoring Schedule for the Reporting Month
4...... Water Quality Monitoring
4.3 Monitoring Parameters, Frequency and Duration
5.2 Monitoring
Methodology and Location
5.3 Monitoring Schedule for the Reporting Month
6...... Environmental Site Inspection and Audit
6.2 Advice
on the Solid and Liquid Waste Management Status
6.3 Environmental
Licenses and Permits
6.4 Implementation
Status of Environmental Mitigation Measures
6.5 Summary
of Exceedance of the Environmental Quality Performance Limit
6.6 Summary
of Complaints, Notification of Summons and Successful Prosecution
7.1 Construction
Programme for the Coming Months
7.2 Environmental
Site Inspection and Monitoring Schedule for the Coming Month
Figure 2.1 Location of
Air Quality Monitoring Stations and Wind Station
Figure 3.1 Location of
Noise Monitoring Stations
Figure 4.1 Location of
Water Monitoring Stations
Appendices
Appendix A Location of
Works Areas
Appendix B Project
Organization for Environmental Works
Appendix C Construction Programme
Appendix D Monitoring Data
and Graphical Plot (Air Quality, Noise and Water Quality)
Appendix E Dolphin
Monitoring Result
Appendix G Calibration
Certificates
Appendix H Event and Action
Plan
Appendix J Environmental
Licenses and Permits
Appendix K Implementation
Schedule for Environmental Mitigation Measures (EMIS)
Appendix M Environmental
Site Inspection and Monitoring Schedule
Appendix N
Investigation Report
Executive Summary
This
monthly Environmental Monitoring and Audit (EM&A) Report is prepared for
Contract No. HY/2013/01 Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary
Crossing Facilities (HKBCF) –
Passenger Clearance Building (hereafter referred to as “the Contract”) for the
Highways Department of Hong Kong Special Administrative Region (HKSAR). The
Contract was awarded to Leighton – Chun Wo Joint Venture (hereafter referred to
as “the Contractor”) and Atkins China Limited was appointed as the
Environmental Team (ET) by the Contractor.
The
Contract is part of Hong Kong – Zhuhai – Macao Bridge HKBCF which is a “Designated
Project”, under Schedule 2 of the Environmental Impact Assessment Ordinance
(EIAO) (Cap 499) and Environmental Impact Assessment (EIA) Report (Register No.
AEIAR-145/2009) was
prepared for the Project. The current Environmental Permit (EP) No. EP-353/2009/K
for HKBCF was
issued on 11 April 2016. These documents are available through the EIA
Ordinance Register. Site preparation works of the
Contract started on 26 September 2014 and the construction works of
the Contract
commenced on 6 October 2014.
Atkins
China Limited has been appointed by the Contractor to implement the
Environmental Monitoring & Audit (EM&A) programme for the Contract in
accordance with the Updated EM&A Manual for HKBCF
(Version 1.0) and will be providing environmental team services to the
Contract.
This
is the forty monthly EM&A Report for the Contract which summarizes findings
of the EM&A works during the reporting period from 1 to 31 January 2018.
Environmental Monitoring and Audit Progress
The
monthly EM&A programme was undertaken in accordance with the Updated
EM&A Manual for HKBCF (Version 1.0).
The air quality, noise, water quality and dolphin monitoring works under
Contract No. HY/2010/02 Hong Kong-Zhuhai-Macao Bridge HKBCF – Reclamation Works
were suspended from 1 September 2017. The ET of Contract No. HY/2013/01 is
required and continues the same implementation of environmental monitoring
commencing on 1 September 2017. It should be noted that the air quality
monitoring station (AMS 6) is covered by Contract No.
HY/2011/03
Hong Kong-Zhuhai-Macao Bridge Hong Kong Link Road – Section between Scenic Hill
and HKBCF.
A summary of the monitoring activities during the reporting period are
listed below:
1-hour
TSP Monitoring: AMS2 - 2, 8, 12, 18, 24 and 30 January 2018
AMS3B - 2, 8, 12, 18, 24 and 30 January 2018
AMS7 - 3, 9, 15, 19, 25 and 31 January 2018
24-hour
TSP Monitoring: AMS2 - 3, 6 ,11, 17, 23 and 29 January 2018
AMS3B - 3, 6 ,11, 17, 23 and 29 January 2018
AMS7 - 2, 8, 12, 18, 24 and 30 January 2018
Noise
Monitoring: NMS2 - 3, 10, 16 and 22 January 2018
NMS3B - 2, 12, 18, 26 and 30 January 2018
Water
Quality Monitoring: 1, 3,
5, 8, 10, 12, 15, 17, 19, 22, 24, 26, 29 and 31 January 2018
Chinese
White Dolphin Monitoring: 9, 11, 19 and
26 January 2018
Environmental
Site Inspection: 3, 10, 17, 24
and 31 January 2018
Breaches of Action and Limit Levels
A
summary of environmental exceedances for the reporting period are listed below:
Environmental Monitoring |
Parameters |
Action Level (AL) |
Limit Level (LL) |
Air
Quality |
1-hr TSP |
- |
- |
24-hr
TSP |
2 |
- |
|
Noise |
Leq
(30 min) |
- |
- |
Water
Quality |
Suspended
solids level (SS) |
1 |
- |
Turbidity
level |
- |
- |
|
Dissolved
oxygen level (DO) |
- |
- |
|
Dolphin
Monitoring |
Quarterly
Analysis |
- |
- |
Complaint Log
There was no complaint received in
relation to the environmental impact during the reporting period.
Notifications of Summons and Successful
Prosecutions
There
was no notifications of summons or prosecutions received during the reporting
period.
Reporting Change
There
was no reporting change during the reporting period.
Future Key Issues
The
future key issues to be undertaken in the upcoming month include:
Land
Based work
·
Backfilling
·
Falsework
stripping
·
Pipework
and ductwork installation
·
Wet
trade works
·
Dry
trade works
·
Mechanical,
Electrical and Plumbing (MEP) High Level Containment
·
Removal of temporary
works
·
Window wall glazing
·
Hanging scaffolding
removal
·
Southern toilet
·
Miscellaneous
steelwork
·
Escalator Installation
·
Glazed lift
Installation
·
Road and Kerbing
·
Testing and
Commissioning works
·
Water features and
planters
·
EVA/ Roadwork
·
Kiosk/Booth
installation
No
marine based construction work to be undertaken in the upcoming month.
·
Construction of Passenger Clearance Building
(PCB) including architectural and builders works, structural steel roof and
reinforced concrete frames, basement, piled foundations, aluminium roof,
curtain wall facades, building services and electrical and mechanical works;
·
Installation of district cooling system including seawater cooling intake pumping
station, seawater intake and discharge water pipelines work; Installation of
Chilled water cooling pipelines system, heat exchanger and chilled pumping
system;
·
Construction of transport and associated
facilities connecting to the PCB entailing the Emergency Vehicular Access, an
at-grade mainland side drop-off area, an Hong Kong side elevated drop-off deck
and 8 numbers of footbridge links;
·
Construction of a public toilet, 6 numbers of
C&ED observation booths, a generator set building and a refuse storage
& material recovery chamber;
·
Construction of a section of 70m common
utilities enclosure and staff subway and civil provisions for associated electrical
and mechanical works;
·
Construction of drainage, sewerage, fresh water
& flushing water supply and utilities & service works;
·
Construction of civil provisions, including
draw pits & ducting for Traffic Control and Surveillance System (TCSS) and
Extra Low Voltage System (ELV);
·
Construction of box culvert A;
·
Construction of 2 numbers of vehicular bridge
abutments at mainland side pickup area earthmound;
·
Construction of geotechnical works including
top up the existing earth mound from +11.5mPD to the finished level as stated
in the Contract, reinforced earth slope and fill slopes and special backdrop
manhole at mainland side pickup area earthmound;
·
Landscape hardworks and softworks; and
·
Other works which are shown on the Drawings or
specified in the Specification or which may be ordered in accordance with the
Contract.
Table
1.1 Contact
Information of Key Personnel
Party |
Position |
Name |
Telephone |
Fax |
Engineer or
Engineer’s Representative |
Chief
Resident Engineer |
Michael
Tovey |
3958
7470 |
3468
2076 |
Environmental
Project Office / Independent Environmental Checker (Ramboll Hong Kong
Limited) |
Environmental
Project Office Leader |
Y.
H. Hui |
3465
2888 |
3465
2899 |
Independent
Environmental Checker |
Raymond
Dai |
3465
2888 |
3465
2899 |
|
Contractor |
Project
Manager |
Owen Leung |
9232
5750 |
3621
0180 |
Environmental
Officer |
Stephen Tsang |
9686 0787 |
3621
0180 |
|
Environmental
Team |
Environmental
Team Leader |
Keith
Chau |
2972 1721 |
2890
6343 |
24 hours
complaint hotline |
--- |
--- |
3958 7300 |
--- |
Remark: 1.
The company name for Ramboll Environ Hong Kong Limited has been re-branded as
Ramboll Hong Kong Limited since 3 January 2018. |
·
Waterproofing
·
Backfilling
·
Falsework stripping
·
Pipework and ductwork installation
·
Wet trade works
·
Dry trade works
·
MEP High Level Containment
·
Removal of temporary works
·
Window wall glazing
·
Hanging scaffolding removal
·
Southern toilet
·
MISC steelwork
·
Lift installation
·
Escalator installation
·
Glazed lift installation
·
Road and Kerbing
·
Testing and commissioning works
·
Water features and planters
·
EVA Roadwork
·
Temporary Loading and Unloading facility
dismantling
·
Marine transportation
for delivery of materials from temporary loading and unloading facility
Table 2.1 Action
and Limit Levels for 1-hour TSP
Monitoring
Station |
Action Level, µg/m3 |
Limit Level, µg/m3 |
AMS 2 - Tung Chung Development Pier |
374 |
500 |
AMS 3B - |
368 |
|
AMS
6 - Dragonair / CNAC (Group) Building (HKIA) |
360 |
|
AMS
7 - Hong Kong SkyCity
Marriott Hotel |
370 |
Table 2.2 Action and Limit Levels for 24-hour TSP
Monitoring
Station |
Action Level, µg/m3 |
Limit Level, µg/m3 |
AMS 2 - Tung Chung Development Pier |
176 |
260 |
AMS 3B - |
167 |
|
AMS
6 – Dragonair / CNAC (Group) Building (HKIA) |
173 |
|
AMS
7 - Hong Kong SkyCity Marriott Hotel |
183 |
Table 2.3 Air Quality Monitoring Equipment
Equipment |
Brand and Model |
Portable direct reading dust meter |
Sibata Digital Dust Monitor (Model No. LD-3B) |
High
Volume Sampler |
Tisch Environmental Mass Flow Controlled Total
Suspended Particulate |
Table 2.4 Construction Dust Monitoring Locations
ID |
Location Description |
AMS
2 |
Tung
Chung Development Pier |
AMS
3B |
Site
Boundary of Site Office Area at Work Area WA2 |
AMS
6 |
Dragonair/CNAC
(Group) Building |
AMS
7 |
Hong
Kong SkyCity Marriott Hotel |
Remarks:
(1)
The ET of this
Contract should conduct impact air quality monitoring at the AMS listed in the
table as part of EM&A programme according to the latest notification from ENPO when the monitoring
station(s) is/are no longer covered by another ET of the HZMB project.
(2)
The original
monitoring location was at Hong Kong SkyCity Marriott Hotel (AMS7). As the
permission to carry out air quality monitoring at Hong Kong SkyCity Marriott
Hotel was not granted after 31 January 2015, the monitoring location was
relocated to Chu Kong Air-Sea Union Transportation Co. Ltd. (AMS7A) from 5
February 2015 to 30 December 2015. The alternative monitoring location at Chu
Kong Air-Sea Union Transportation Co. Ltd. was approved by EPD on 5 February
2015. However, AMS7A was relocated back to its original location (AMS7-Hong
Kong SkyCity Marriott Hotel) on 30 December 2015. The relocation of air quality
monitoring location, AMS7A, back to AMS7 was approved by EPD on 21 December
2015.
Table 2.5 Air Quality Monitoring Parameters,
Frequency and Duration
Parameter |
Frequency and Duration |
1-hour
TSP |
Three
times every 6 days while the highest dust impact was expected |
24-hour
TSP |
Once
every 6 days |
(a) The
HVS was installed in the vicinity of the air sensitive receivers. The following
criteria were considered in the installation of the HVS.
(i) A
horizontal platform with appropriate support to secure the sampler against
gusty wind was provided.
(ii) The distance between the HVS and any obstacles, such as
buildings, was at least twice the height that the obstacle protrudes above the
HVS.
(iii) A minimum of 2 meters separation from walls, parapets and
penthouse for rooftop sampler was provided.
(iv) No furnace or incinerator flues are nearby.
(v) Airflow
around the sampler was unrestricted.
(vi) Permission was obtained to set up the samplers and access to the
monitoring stations.
(vii) A secured supply of electricity was obtained to operate the
samplers.
(viii) The sampler was located more than 20 meters from any dripline.
(ix) Any wire fence and gate, required to protect the sampler, did not
obstruct the monitoring process.
(x) Flow
control accuracy was kept within ±2.5% deviation over 24-hour sampling period.
(b) Preparation
of Filter Papers
(i) Glass
fibre filters, G810 were labelled and sufficient filters that were clean and
without pinholes were selected.
(ii) All filters were equilibrated in the conditioning environment for
24 hours before weighing. The conditioning environment temperature was around
25°C and not variable by more than ±
(iii) All filter papers were prepared and analysed by ALS Technichem
(HK) Pty Ltd., which is a HOKLAS accredited laboratory and has comprehensive
quality assurance and quality control programmes.
(c) Field
Monitoring
(i) The
power supply was checked to ensure the HVS works properly.
(ii) The
filter holder and the area surrounding the filter were cleaned.
(iii) The filter holder was removed by loosening the four bolts and a
new filter, with stamped number upward, on a supporting screen was aligned
carefully.
(iv) The filter was properly aligned on the screen so that the gasket
formed an airtight seal on the outer edges of the filter.
(v) The
swing bolts were fastened to hold the filter holder down to the frame. The
pressure applied was sufficient to avoid air leakage at the edges.
(vi) Then the shelter lid was closed and was secured with the aluminium
strip.
(vii) The HVS was warmed-up for about 5 minutes to establish
run-temperature conditions.
(viii) A new flow rate record sheet was set into the flow recorder.
(xi) On site temperature and atmospheric pressure readings were taken
and the flow rate of the HVS was checked and adjusted at around 1.1 m3/min,
and complied with the range specified in the Updated EM&A Manual for HKBCF
(Version 1.0) (i.e. 0.6-1.7 m3/min).
(x) The
programmable digital timer was set for a sampling period of 24 hours, and the
starting time, weather condition and the filter number were recorded.
(xi) The initial elapsed time was recorded.
(xii) At the end of sampling, on site temperature and atmospheric
pressure readings were taken and the final flow rate of the HVS was checked and
recorded.
(xiii) The final elapsed time was recorded.
(xiv) The sampled filter was removed carefully and folded in half length
so that only surfaces with collected particulate matter were in contact.
(xv) It was then placed in a clean plastic envelope and sealed.
(xvi) All monitoring information was recorded on a standard data sheet.
(xvii) Filters were then sent to ALS Technichem (HK) Pty Ltd. for analysis.
(d) Maintenance
and Calibration
(i) The
HVS and its accessories were maintained in good working condition, such as
replacing motor brushes routinely and checking electrical wiring to ensure a
continuous power supply.
(ii) 5-point calibration of the HVS was conducted using TE
(iii) Calibration certificate of the HVSs are provided in Appendix G.
(a) Measuring
Procedures
The measuring procedures of the
1-hour dust meter were in accordance with the Manufacturer’s Instruction Manual
as follows:
(i) Turn
the power on.
(ii) Close the air collecting opening cover.
(iii) Push the “TIME SETTING” switch to [BG].
(iv) Push “START/STOP” switch to perform background measurement for 6
seconds.
(v) Turn
the knob at SENSI ADJ position to insert the light scattering plate.
(vi) Leave the equipment for 1 minute upon “SPAN CHECK” is indicated in
the display.
(vii) Push “START/STOP” switch to perform automatic sensitivity
adjustment. This measurement takes 1 minute.
(viii) Pull out the knob and return it to MEASURE position.
(ix) Push the “TIME SETTING” switch the time set in the display to 3
hours.
(x) Lower
down the air collection opening cover.
(xi) Push “START/STOP” switch to start measurement.
(b) Maintenance and Calibration
(i) The
1-hour TSP meter was calibrated at 1-year intervals against a Tisch
Environmental Mass Flow Controlled Total Suspended Particulate (TSP) High Volume
Air Sampler. Calibration certificates of the Laser Dust Monitors are provided
in Appendix
G.
Table 2.6 Summary of 1-hour TSP Monitoring
Results During the Reporting Month
Monitoring Station |
Average, (g/m3 |
Range, (g/m3 |
Action Level, µg/m3 |
Limit Level, µg/m3 |
AMS2 |
57 |
13 - 113 |
374 |
500 |
AMS3B |
58 |
14 - 105 |
368 |
|
AMS7 |
46 |
12 - 132 |
370 |
Table 2.7 Summary of 24-hour TSP Monitoring
Results During the Reporting Month
Monitoring Station |
Average, (g/m3 |
Range, (g/m3 |
Action Level, µg/m3 |
Limit Level, µg/m3 |
AMS2 |
85 |
16 - 184 |
176 |
260 |
AMS3B |
89 |
13- 183 |
167 |
|
AMS7 |
88 |
36 - 136 |
183 |
Table
3.1 Action and Limit Levels for
Noise during Construction Period
Monitoring
Station |
Time Period |
Action Level |
Limit Level |
NMS2 |
0700-1900
hours on normal weekdays |
When
one documented complaint is received. |
75
dB(A) |
NMS3B |
65/70 dB(A)* |
Remark:
* The
Action and limit Levels for schools will be applied for NMS3B. Daytime noise
Limit Level of 70 dB(A) applies to education institutions, while 65 dB(A)
applies during the school examination period.
Table
3.2 Noise Monitoring Equipment
Equipment |
Brand
and Model |
Integrated
Sound Level Meter |
B&K
2238 |
Acoustic
Calibrator |
B&K 4231 |
Table 3.3 Construction Noise Monitoring Locations
ID |
Location
Description |
NMS2 |
Seaview
Crescent |
NMS3B |
Site Boundary
of Site Office
Area at Works Area WA2 |
Remarks:
(1)
The ET of
this Contract should conduct impact noise monitoring at the NMS listed in the
table as part of EM&A programme according to the latest notification from ENPO when the monitoring station(s)
is/are no longer covered by another ET of the HZMB project.
(2)
The Action and limit Levels for schools
will be applied for NMS3B. Daytime noise Limit Level of 70 dB(A) applies
to
education
institutions, while 65 dB(A) applies during the school examination period.
Table 3.4 Noise
Monitoring Parameters, Frequency and Duration
Parameter |
Frequency and
Duration |
30-minutes
measurement at each monitoring station between 0700 and 1900 on normal
weekdays (Monday to Saturday).Leq, L10 and L90
would be recorded. |
At least once
per week |
(a) The
measurement at NMS3B was free-field measurement and NMS 2 was Façade
measurement. A correction of +3dB(A) shall be made to the free-field
measurement.
(b) The battery condition was checked to
ensure the correct functioning of the meter.
(c) Parameters such as frequency weighting,
the time weighting and the measurement time were set as follows:-
(i) frequency
weighting: A
(ii) time
weighting: Fast
(iii) time measurement: Leq (30-minutes) during non-restricted
hours i.e. 0700-1900 on normal workdays.
(d) Prior to and after each noise
measurement, the meter was calibrated using the acoustic calibrator for 94dB(A)
at 1000 Hz. If the difference in the calibration level before and after
measurement was more than 1 dB(A), the measurement would be considered invalid
and repeat of noise measurement would be required after re-calibration or
repair of the equipment.
(e) During the monitoring period, the Leq,
L10 and L90 were recorded. In addition, site conditions
and noise sources were recorded on a standard record sheet.
(g) Noise measurement was paused during
periods of high intrusive noise (e.g. dog barking, helicopter noise) if
possible. Observations were recorded when intrusive noise was unavoidable.
(h) Noise monitoring was cancelled in the
presence of fog, rain, wind with a steady speed exceeding 5m/s, or wind with
gusts exceeding 10m/s. The wind speed shall be checked with a portable wind
speed meter capable of measuring the wind speed in m/s.
(a) The
microphone head of the sound level meter was cleaned with soft cloth at regular
intervals.
(b) The meter and calibrator were sent to
the supplier or HOKLAS laboratory to check and calibrate at yearly intervals.
(c) Calibration certificates of the sound
level meters and acoustic calibrators are provided in Appendix G.
Table 3.5 Summary of Construction Noise
Monitoring Results During the Reporting Month
Monitoring Stations |
Average, dB(A) |
Range, dB(A) |
Limit Level, dB(A) |
NMS2 |
66 |
64 - 68 |
75 |
NMS3B(*) |
67 |
66 - 67 |
70/65 |
Remark:
(*)The Action and limit Levels for
schools will be applied for NMS3B. Daytime noise Limit Level of 70 dB(A)
applies to education institutions, while 65 dB(A) applies during the school
examination period.
Table 4.1 Action
and Limit Levels for Water Quality
Parameters |
Action Level |
Limit Level |
DO in mg L-1 (Surface, Middle & Bottom) |
Surface and Middle 5.0 Bottom 4.7 |
Surface and Middle 4.2 (except 5 mg/L for FCZ) Bottom 3.6 |
SS in mg L-1 (depth-averaged) at
all monitoring stations and control stations |
23.5 and 120% of upstream control station's
SS at the same tide of the same day* |
34.4 and 130% of upstream control station's
SS at the same tide of the same day and 10mg/L for WSD Seawater intakes* |
Turbidity in NTU (depth-averaged) |
27.5 and 120% of upstream control station's
turbidity at the same tide of the same day* |
47.0 and 130%
of upstream control station's turbidity at the same tide of the same day* |
Table 4.2 Water Quality Monitoring Equipment
Brand and Model |
Serial Number |
|
DO
and Temperature Meter, Salinity Meter, Turbidity Meter an pH Meter |
YSI 6920 V2 Sonde |
00019CB2 / 000109DF |
DO
and Temperature Meter, Salinity Meter, Turbidity Meter an pH Meter |
YSI ProDSS |
16J101716 / 17E102521 |
Table 4.3 Impact Water Quality Monitoring
Parameters and Frequency
Monitoring
Stations |
Parameter,
unit |
Frequency |
No. of depth |
Impact Stations: Control/Far Field Stations: Sensitive Receiver Stations: |
-
Depth,
m -
Temperature,
oC -
Salinity,
ppt -
Dissolved
Oxygen (DO), mg/L -
DO
Saturation, % -
Turbidity,
NTU -
pH -
Suspended
Solids (SS), mg/L |
Three
times per week during mid-ebb and mid-flood tides |
3 (1m
below water surface, mid-depth and 1m above sea bed, except where the water
depth is less than 6m, in which case the mid-depth station may be omitted.
Should the water depth less than 3m, only the mid-depth station will be
monitored.) |
Table
4.4 Impact Water Quality
Monitoring Stations
Station |
Description |
East |
North |
IS5 |
Impact Station (Close to HKBCF construction site) |
811579 |
817106 |
IS(Mf)6 |
Impact Station (Close to HKBCF construction site) |
812101 |
817873 |
IS7 |
Impact Station (Close to HKBCF construction site) |
812244 |
818777 |
IS8 |
Impact Station (Close to HKBCF construction site) |
814251 |
818412 |
IS(Mf)9 |
Impact Station (Close to HKBCF construction site) |
813273 |
818850 |
IS10(N)* |
Impact Station (Close to HKBCF construction site) |
812942 |
820881 |
Impact Station (Close to HKBCF construction site) |
813562 |
820716 |
|
Impact Station (Close to HKBCF construction site) |
814328 |
819497 |
|
IS17 |
Impact Station (Close to HKBCF construction site) |
814539 |
820391 |
SR3(N) ^ |
Sensitive receivers (San Tau SSSI) |
810689 |
816591 |
SR4(N) |
Sensitive receivers (Tai Ho) |
814705 |
817859 |
SR5(N)* |
Sensitive receiver (Artificial Reef in NE Airport) |
812569 |
821475 |
SR6 |
Sensitive receivers (Sha Chau and Lung Kwu Chau Marine Park) |
805837 |
821818 |
SR7 |
Sensitive receivers (Tai Mo Do) |
814293 |
821431 |
SR10A(N) ^ |
Sensitive receivers (Ma Wan FCZ) 1 |
823644 |
823484 |
SR10B(N2) ^ |
Sensitive receivers (Ma Wan FCZ) 2 |
823689 |
823159 |
CS(Mf)3(N)* |
Control Station |
808814 |
822355 |
CS(Mf)5 |
Control Station |
817990 |
821129 |
CS4 |
Control Station |
810025 |
824004 |
CS6 |
Control Station |
817028 |
823992 |
CSA |
Control Station |
818103 |
823064 |
(a) The
in-situ water quality parameters, viz. dissolved oxygen, temperature, salinity,
turbidity and pH, were measured by multi-parameter meters and pH meter.
(a) Digital
Differential Global Positioning Systems (DGPS) were used to ensure that the
correct location was selected prior to sample collection.
(b) Portable, battery-operated echo sounders
were used for the determination of water depth at each designated monitoring
station.
(c) All in-situ measurements were taken at 3
water depths, 1m below water surface, mid-depth and 1m above sea bed, except
where the water depth was less than 6m, in which case the mid-depth station was
omitted. Should the water depth be less than 3m, only the mid-depth station was
monitored.
(d) At each measurement/sampling depth, two
consecutive in-situ monitoring (DO concentration and saturation, temperature,
turbidity, pH, salinity) and water sample for SS. The probes were retrieved out
of the water after the first measurement and then re-deployed for the second
measurement. Where the difference in the value between the first and second
readings of DO or turbidity parameters was more than 25% of the value of the
first reading, the reading was discarded and further readings were taken.
(e) Duplicate samples from each independent
sampling event were collected for SS measurement. Water samples were collected
using the water samplers and the samples were stored in high density polythene
bottles. Water samples collected were well-mixed in the water sampler prior to
pre-rinsing and transferring to sample bottles. Sample bottles were pre-rinsed
with the same water samples. The sample bottles were then be packed in
cool-boxes (cooled at 4°C
without being frozen), and delivered to ALS Technichem (HK) Pty Ltd. for the
analysis of suspended solids concentrations. The laboratory determination work
would be started within 24 hours after collection of the water samples. ALS
Technichem (HK) Pty Ltd. is a HOKLAS accredited laboratory and has
comprehensive quality assurance and quality control programmes. For QA/QC
procedures, one duplicate samples of every batch of 20 samples was analyzed.
(f) The analysis method and reporting and
detection limit for SS is shown in Table
4.5.
Table 4.5 Laboratory Analysis for Suspended Solids
Parameters |
Instrumentation |
Analytical
Method |
Reporting Limit |
Detection Limit |
Suspended Solids (SS) |
Weighting |
APHA 2540-D |
0.5mg/L |
0.5mg/L |
(g) Other relevant data were recorded,
including monitoring location / position, time, water depth, tidal stages,
weather conditions and any special phenomena or work underway at the
construction site in the field log sheet for information.
(a) All
in situ monitoring instruments would be calibrated and calibrated by ALS
Technichem (HK) Pty Ltd. before use and at 3-monthly intervals throughout all
stages of the water quality monitoring programme. Calibration details are
provided in Appendix G.
(b) The dissolved oxygen probe of YSI 6820
was calibrated by wet bulb method. Before the calibration routine, the sensor
for dissolved oxygen was thermally equilibrated in water-saturated air.
Calibration cup is served as a calibration chamber and it was loosened from
airtight condition before it is used for the calibration. Calibration at ALS
Technichem (HK) Pty Ltd. was carried out once every three months in a water
sample with a known concentration of dissolved oxygen. The sensor was immersed
in the water and after thermal equilibration, the known mg/L value was keyed in
and the calibration was carried out automatically.
(c)
The turbidity probe of YSI 6820 is
calibrated two times a month. A zero check in distilled water was performed
with the turbidity probe of YSI 6820 once per monitoring day. The probe will be
calibrated with a solution of known NTU at ALS Technichem (HK) Pty Ltd. once
every three months.
Table 4.6 Summary
of Water Quality Exceedances
Station |
Exceedance Level |
DO (S&M) |
DO (Bottom) |
Turbidity |
SS |
||||
Ebb |
Flood |
Ebb |
Flood |
Ebb |
Flood |
Ebb |
Flood |
||
IS5 |
Action Level |
|
|
|
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
IS(Mf)6 |
Action Level |
|
|
|
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
IS7 |
Action Level |
|
|
|
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
IS8 |
Action Level |
|
|
|
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
IS(Mf)9 |
Action Level |
|
|
|
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
IS10(N) |
Action Level |
|
|
|
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
IS(Mf)11 |
Action Level |
|
|
|
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
IS(Mf)16 |
Action Level |
|
|
|
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
IS17 |
Action Level |
|
|
|
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
SR3(N) |
Action Level |
|
|
|
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
SR4(N) |
Action Level |
|
|
|
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
SR5(N) |
Action Level |
|
|
|
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
SR6 |
Action Level |
|
|
|
|
|
|
2018-01-31 |
|
Limit Level |
|
|
|
|
|
|
|
|
|
SR7 |
Action Level |
|
|
|
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
SR10A(N) |
Action Level |
|
|
|
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
SR10B |
Action Level |
|
|
|
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
Total |
Action
Level |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
|||||||||
Limit
Level |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
Table 5.1 Action and Limit Levels for
Chinese White Dolphin Monitoring - Approach to Define Action Level
(AL) and Limit Level (LL)
North Lantau Social Cluster |
||
Northeast Lantau (NEL) |
Northwest Lantau (NWL) |
|
Action Level |
(STG < 70% of baseline)
& (ANI < 70% of baseline) |
(STG < 70% of baseline)
& (ANI < 70% of baseline) |
Limit Level |
[(STG < 40% of
baseline) & (ANI < 40% of baseline)] AND [(STG < 40% of
baseline) & (ANI < 40% of baseline)] |
Remarks:
1. STG
means no. of
on-effort dolphin sightings per 100 km of survey effort
2. ANI
means no. of
dolphins from all on-effort sightings per 100 km of survey effort
3. For
North Lantau Social Cluster, AL will be trigger if either NEL or NWL
fall below the criteria; LL will be triggered if both NEL and NWL
fall below the criteria.
Table 5.2 Derived Value of Action Level (AL) and
Limit Level (LL) for Chinese White Dolphin Monitoring
|
North Lantau Social Cluster |
|
|
NEL |
NWL |
Action Level |
(STG < 4.2) & (ANI < 15.5) |
(STG < 6.9) & (ANI < 31.3) |
Limit Level |
[(STG < 2.4) & (ANI <8.9)]
AND [(STG < 3.9) & (ANI < 17.9)] |
Table
5.3 Impact Dolphin Monitoring
Transect Line Co-ordinates
Transect Line No. |
HK Grid System |
|
Easting |
Northing |
|
1(#) |
804671 |
815456 |
804671 |
831404 |
|
2(#) |
805476 |
820800 |
805476 |
826654 |
|
3 |
806464 |
821150 |
806464 |
822911 |
|
4 |
807518 |
821500 |
807518 |
829230 |
|
5 |
808504 |
821850 |
808504 |
828602 |
|
6 |
809490 |
822150 |
809490 |
825352 |
|
7(#) |
810499 |
822000 |
810499 |
824613 |
|
8(#) |
811508 |
821123 |
811508 |
824254 |
|
9(#) |
812516 |
821303 |
812516 |
824254 |
|
10* |
813525 |
820827 |
813525 |
824657 |
|
11# |
814556 |
818853 |
814556 |
820992 |
|
12 |
815542 |
818807 |
815542 |
824882 |
|
13 |
816506 |
819480 |
816506 |
824859 |
|
14 |
817537 |
820220 |
817537 |
824613 |
|
15 |
818568 |
820735 |
818568 |
824433 |
|
16 |
819532 |
821420 |
819532 |
824209 |
|
17 |
820451 |
822125 |
820451 |
823671 |
|
18 |
821504 |
822371 |
821504 |
823761 |
|
19 |
822513 |
823268 |
822513 |
824321 |
|
20 |
823477 |
823402 |
823477 |
824613 |
|
21 |
805476 |
827081 |
805476 |
830562 |
|
22 |
806464 |
824033 |
806464 |
829598 |
|
23 |
814559 |
821739 |
814559 |
824768 |
|
24 |
805476 |
815900 |
805476 |
819100 |
|
Remarks: (a)
* Due
to the presence of deployed silt curtain systems at the site boundaries of
the Contract, some of the transect
lines shown in Figure 1 of Appendix E could not be fully surveyed during the regular survey.
Transect 10 is reduced from 6.4km to approximately 3.6km in length due to the
HKBCF construction site. Therefore, the total transect length for both NEL
and NWL combined is reduced to approximately 108km. (b)
#
Coordinates for transect lines 1, 8,
9 and 11 have been updated in respect to the Proposal for Alteration of
Transect Line for Dolphin Monitoring approved by EPD on 19 August 2015. (c) Due to marine work of the Expansion of Hong Kong
International Airport into a Three-Runway System (3RS Project), original
transect lines of dolphin monitoring 2, 3, 4, 5, 6 and 7 are enclosed by
works boundary of 3RS Project. Alternative dolphin monitoring transect lines
2, 3, 4, 5, 6, 7 and 24 are adopted starting from 17 May 2017 to replace the
original transect lines. (d)
The
change of transect lines 2, 3, 4, 5, 6 and 7 and new vessel-based transect
line 24 for dolphin monitoring have been proposed due to the marine work of a
designated project - Expansion of Hong Kong International Airport into a
Three-Runway System (3RS Project). It was justified and verified by the ET
Leader for Contract No. HY/2010/02 and the IEC respectively on 24 March 2017
and it was approved by EPD on 12 May 2017. |
Table 5.4 Dolphin encounter rates deduced from
the two sets of HKBCF surveys (two surveys in each set) in January 2018 in
Northeast (NEL) and Northwest Lantau (NWL)
|
Encounter rate (STG) |
Encounter rate (ANI) |
|
Primary Lines Only |
Primary Lines Only |
||
NEL |
Set 1: January 9th
/ 11th |
0.0 |
0.0 |
Set 2: January 19th
/ 26th |
0.0 |
0.0 |
|
NWL |
Set 1: January 9th
/ 11th |
2.0 |
9.8 |
Set 2: January 19th
/ 26th |
5.1 |
20.3 |
Table 5.5 Overall dolphin encounter rates
(sightings per 100 km of survey effort) from all four HKBCF surveys conducted
in January 2018 on primary lines only as well as both primary lines and
secondary lines in Northeast and Northwest Lantau
|
Encounter rate (STG) |
Encounter rate (ANI) |
||
Primary Lines Only |
Both Primary and Secondary Lines |
Primary Lines Only |
Both Primary and Secondary Lines |
|
Northeast Lantau |
0.0 |
0.0 |
0.0 |
0.0 |
Northwest Lantau |
3.6 |
2.7 |
15.4 |
11.7 |
Table 6.1 Summary of Environmental Site
Inspections
Date of Audit |
Observations |
Actions Taken by Contractor / Recommendation |
Date of Observations Closed |
3 January 2018 |
Nil |
Nil |
Nil |
10 January 2018 |
1.
The
C&D waste was scattered near the waste skip at western part of haul road. |
1. The C&D waste was removed at western part of haul road. |
24 January 2018 |
2.
Oily
water was found in the drip tray at Row 2. |
2.
The
oily water was removed from drip tray at Row 2. |
17 January 2018 |
|
3.
Chemical
container was found without drip tray at Row 2. |
3.
The
chemical container was removed at Row 2. |
24 January 2018 |
|
4.
The
NRMM label was found damaged on the 1/F of Row 4. |
4.
An appropriate NRMM label was affixed on the
machinery on the 1/F of Row 4. |
31 January 2018 |
|
5.
The
dust emission was generated from the rock breaking activities at the work
area near Row 4. |
5.
Rock
breaking was not observed at the work area near Row 4 during site inspection.
Dust emission was not observed. |
17 January 2018 |
|
17 January 2017 |
1.
The
C&D waste was scattered near the waste skip at western part of haul road. |
1. The C&D waste was removed at western part of haul
road. |
24 January 2018 |
2.
Chemical
container was found without drip tray at Row 2. |
2. The chemical container was
removed at Row 2. |
||
3.
The
NRMM label was found damaged on the 1/F of Row 4. |
3. An appropriate NRMM label was
affixed on the machinery on the 1/F of Row 4. |
31 January 2018 |
|
4.
Dust
emission was observed from breaking activities at 1/F of Row 4. |
4. Watering was provided for dusty
activities on the 1/F of Row 4. |
24 January 2018 |
|
24 January 2018 |
1.
The
NRMM label was found damaged on the 1/F of Row 4. 2.
The
stockpiles of cement (>20 bags) were found uncovered on the 1/F of Row 4. |
1.
An
appropriate NRMM label was affixed on the machinery on the 1/F of Row 4. 2. The stockpile of cement (>20 bags) were removed on the
1/F of Row 4. |
31 January 2018 |
31 January 2018 |
Nil |
Nil |
Nil |
Table 7-1 Construction Activities for February 2018
Site Area |
Description
of Activities |
Nature of
Activities |
WA1 |
Backfilling
|
Land-Based |
WA1 |
Falsework
stripping |
Land-Based |
WA1 |
Pipework
and ductwork installation |
Land-Based |
WA1 |
Wet trade works |
Land-Based |
WA1 |
Dry trade works |
Land-Based |
WA1 |
MEP High Level Containment |
Land-Based |
WA1 |
Removal
of temporary works |
Land-Based |
WA1 |
Window wall glazing |
Land-Based |
WA1 |
Hanging scaffolding removal |
Land-Based |
WA1 |
Southern
toilet |
Land-Based |
WA1 |
MISC
steelwork |
Land-Based |
WA1 |
Escalator
installation |
Land-Based |
WA1 |
Glazed
lift installation |
Land-Based |
WA1 |
Road and
Kerbing |
Land-Based |
WA1 |
Testing
and commissioning works |
Land-Based |
WA1 |
Water
features and planters |
Land-Based |
WA1 |
EVA/
Roadwork |
Land-Based |
WA1 |
Kiosk/Booth
installation |
Land-Based |