Contract
No. HY/2013/01
Hong Kong-Zhuhai-Macao Bridge
Hong Kong Boundary Crossing Facilities –
Passenger Clearance Building
Monthly EM&A Report No. 36
(Covering the Period from 1 September 2017 to 30 September 2017)
19 October 2017
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 F Wind
Data
Appendix G Calibration
Certificates
Appendix H Event
and Action Plan
Appendix I Waste
Flow Table
Appendix J Environmental
Licenses and Permits
Appendix K Implementation
Schedule for Environmental Mitigation Measures (EMIS)
Appendix L Statistics
on Environmental Complaints, Notification of Summons and Successful
Prosecutions
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 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 thirty-sixth monthly EM&A Report for the Contract which summarizes
findings of the EM&A works during the reporting period from 1 to 30
September 2017.
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: 1,
4, 5, 8, 11, 14, 15, 20, 21, 26, 27 and 29 September 2017
24-hour
TSP Monitoring: 1,
4, 7, 8, 13, 14, 19, 20, 25, 26, 28 and 30 September 2017
Noise
Monitoring: 4,
6, 12, 14, 18, 20, 26 and 28 September 2017
Water
Quality Monitoring(*): 1,
6, 8, 11, 13, 15, 18, 20, 22, 25, 27 and 29 September 2017
Chinese
White Dolphin Monitoring: 5,
14, 21 and 25 September 2017
Environmental
Site Inspection: 6,
13, 20 and 27 September 2017
Remark(*): Typhoon signal no. 3 was hoisted by the Hong Kong
Observatory on 4 September 2017. Due to safety concern and adverse weather
condition, water quality monitoring was cancelled on 4 September 2017. No
substitute monitoring was conducted due to boat unavailability.
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 |
- |
- |
|
Noise |
Leq
(30 min) |
- |
- |
Water
Quality |
Suspended
solids level (SS) |
8 |
1 |
Turbidity
level |
5 |
1 |
|
Dissolved
oxygen level (DO) |
137 |
26 |
|
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
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 implemented
the environmental monitoring since 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.
Air
quality monitoring station-AMS3B, noise monitoring station-NMS3B and the
meteorological station have been slightly re-located to AECOM PRE's Office
without re-branding since 1 September 2017.
Future Key Issues
The
future key issues to be undertaken in the upcoming month include:
Land
Based work
·
Waterproofing
·
Backfilling
·
Formwork
and falsework stripping
·
Western
vertical column
·
Blockwork
walls
·
Pipework
and ductwork installation
·
Hanger
rods for cable container
·
Wet
trade works
·
Dry
trade works
·
Façade
Bracket for Cabins
·
Mechanical,
Electrical and Plumbing (MEP) High Level Containment
·
Removal of temporary
works
·
Window wall glazing
·
Heat exchanger
installation
·
Heavy MEP plant set up
in basement
·
Double Bow Truss
installation
·
Mullion Frame
Installation
·
Curtain wall glaring
·
Hanging scaffolding
·
Footbridge
construction
·
Roof cladding
·
Refuse collection
point
·
Southern toilet
·
Miscellaneous
steelwork
·
Lift installation
·
Escalator Installation
·
Glazed lift
Installation
·
Road and Kerbing
·
Testing and
Commissioning works
Marine
Based work
·
Seawater intake
seawall reinstatement
·
Seawater outfall pipe
laying
·
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 Environ 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 |
Michael Lee |
9502 5887 |
3621
0180 |
|
Environmental
Team |
Environmental
Team Leader |
Keith
Chau |
2972 1721 |
2890
6343 |
24 hours
complaint hotline |
--- |
--- |
3958 7300 |
--- |
·
Waterproofing
·
Backfilling
·
Formwork and falsework stripping
·
Western vertical column
·
Blockwork walls
·
Pipework and ductwork installation
·
Hanger rods for cable container
·
Wet trade works
·
Dry trade works
·
Façade Bracket for Cabins
·
MEP High Level Containment
·
Removal of temporary works
·
Window wall glazing
·
Heat exchanger installation
·
Heavy MEP plant set up in basement
·
Double Bow Truss installation
·
Mullion Frame Installation
·
Curtain wall glaring
·
Hanging scaffolding
·
Footbridge construction
·
Roof cladding
·
Refuse collection point
·
Southern toilet
·
MISC steelwork
·
Lift installation
·
Escalator installation
·
Glazed lift installation
·
Road and Kerbing
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 HKLR (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, mg/m3 |
Range,
mg/m3 |
Action Level, µg/m3 |
Limit Level, µg/m3 |
AMS2 |
28 |
15 - 52 |
374 |
500 |
AMS3B |
15 |
3 - 31 |
368 |
|
AMS7 |
55 |
8 - 160 |
370 |
Table 2.7 Summary
of 24-hour TSP Monitoring Results During the Reporting Month
Monitoring Station |
Average, mg/m3 |
Range,
mg/m3 |
Action Level, µg/m3 |
Limit Level, µg/m3 |
AMS2 |
40 |
20 - 65 |
176 |
260 |
AMS3B |
47 |
27 - 68 |
167 |
|
AMS7 |
50 |
26 - 90 |
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-restructed 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 |
63 - 67 |
75 |
NMS3B(*) |
65 |
63 - 66 |
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^ |
Sensitive receivers (San Tau SSSI) |
810525 |
816456 |
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^ |
Sensitive receivers (Ma Wan FCZ) 1 |
823741 |
823495 |
SR10B(N)^ |
Sensitive receivers (Ma Wan FCZ) 2 |
823683 |
823187 |
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 |
|
2017-09-08 |
2017-09-01; 2017-09-13; 2017-09-18 |
2017-09-01; 2017-09-13; 2017-09-29 |
2017-09-08 |
|
2017-09-08 |
|
Limit Level |
|
|
|
|
|
|
|
|
|
IS(Mf)6 |
Action Level |
|
|
|
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
IS7 |
Action Level |
2017-09-08 |
|
2017-09-08; 2017-09-29 |
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
IS8 |
Action Level |
|
2017-09-08; 2017-09-11; 2017-09-22 |
2017-09-29 |
2017-09-11 |
|
|
|
2017-09-06; 2017-09-18; 2017-09-25 |
Limit Level |
|
|
|
|
|
2017-09-15 |
|
|
|
IS(Mf)9 |
Action Level |
|
2017-09-08; 2017-09-11; 2017-09-22 |
|
2017-09-13 |
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
IS10(N) |
Action Level |
2017-09-08; 2017-09-11; 2017-09-13; 2017-09-22; 2017-09-29 |
2017-09-08; 2017-09-11; 2017-09-22 |
2017-09-01; 2017-09-15; 2017-09-18; 2017-09-22; 2017-09-27; 2017-09-29 |
2017-09-01; 2017-09-11; 2017-09-15; 2017-09-29 |
|
2017-09-08 |
|
|
Limit Level |
|
|
|
|
|
|
|
2017-09-08 |
|
IS(Mf)11 |
Action Level |
2017-09-11; 2017-09-15; 2017-09-22 |
2017-09-08; 2017-09-11; 2017-09-13; 2017-09-15; 2017-09-22 |
2017-09-01; 2017-09-11; 2017-09-18; 2017-09-29 |
2017-09-01; 2017-09-08; 2017-09-11; 2017-09-29 |
|
2017-09-06; 2017-09-08 |
|
2017-09-08 |
Limit Level |
|
|
|
|
|
|
|
|
|
IS(Mf)16 |
Action Level |
2017-09-08 |
2017-09-08; 2017-09-11; 2017-09-22 |
2017-09-08; 2017-09-11; 2017-09-13; 2017-09-18; 2017-09-29 |
2017-09-11; 2017-09-13 |
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
IS17 |
Action Level |
2017-09-08; 2017-09-11; 2017-09-15 |
2017-09-08; 2017-09-11; 2017-09-13; 2017-09-22 |
2017-09-01; 2017-09-06; 2017-09-08; 2017-09-11; 2017-09-13; 2017-09-15; 2017-09-27 |
2017-09-08; 2017-09-11; 2017-09-13; 2017-09-29 |
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
SR3(N) |
Action Level |
2017-09-08; 2017-09-22 |
2017-09-08 |
|
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
SR4(N) |
Action Level |
|
2017-09-08; 2017-09-11; 2017-09-22 |
|
|
|
|
|
2017-09-06 |
Limit Level |
|
|
|
|
|
|
|
|
|
SR5(N) |
Action Level |
2017-09-11; 2017-09-13; 2017-09-22 |
2017-09-08; 2017-09-11; 2017-09-22 |
2017-09-01; 2017-09-11; 2017-09-27; 2017-09-29 |
2017-09-11; 2017-09-29 |
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
SR6 |
Action Level |
2017-09-08; 2017-09-11; 2017-09-18; 2017-09-22 |
2017-09-06; 2017-09-08; 2017-09-11; 2017-09-15; 2017-09-18; 2017-09-20; 2017-09-22 |
2017-09-18 |
2017-09-11; 2017-09-15; 2017-09-18; 2017-09-20 |
|
2017-09-08 |
|
2017-09-06; 2017-09-20 |
Limit Level |
|
|
|
|
|
|
|
|
|
SR7 |
Action Level |
2017-09-11 |
2017-09-08; 2017-09-11; 2017-09-22 |
|
|
|
|
|
|
Limit Level |
|
|
|
|
|
|
|
|
|
SR10A(N) |
Action Level |
|
|
|
2017-09-06; 2017-09-08; 2017-09-11; 2017-09-13; 2017-09-15; 2017-09-20; 2017-09-27 |
|
|
|
|
Limit Level |
2017-09-06; 2017-09-08; 2017-09-13; 2017-09-22 |
2017-09-06; 2017-09-08; 2017-09-11; 2017-09-13; 2017-09-15; 2017-09-18; 2017-09-20; 2017-09-22 |
|
|
|
|
|
|
|
SR10B |
Action Level |
|
|
2017-09-11; 2017-09-27; 2017-09-29 |
2017-09-06; 2017-09-11; 2017-09-13; 2017-09-15; 2017-09-22; 2017-09-25; 2017-09-27 |
|
|
|
|
Limit Level |
2017-09-06; 2017-09-08; 2017-09-11; 2017-09-22 |
2017-09-06; 2017-09-08; 2017-09-11; 2017-09-13; 2017-09-15; 2017-09-18; 2017-09-20; 2017-09-22; 2017-09-25; 2017-09-27 |
|
|
|
|
|
|
|
Total |
Action
Level |
23 |
39 |
36 |
39 |
1 |
4 |
1 |
7 |
150 |
|||||||||
Limit
Level |
8 |
18 |
0 |
0 |
0 |
1 |
0 |
1 |
|
28 |
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 September 2017 in Northeast (NEL) and Northwest Lantau (NWL)
|
Encounter rate (STG) |
Encounter rate (ANI) |
|
Primary Lines Only |
Primary Lines Only |
||
NEL |
Set 1: September 5th
/ 14th |
0.0 |
0.0 |
Set 2: September 21st
/ 25th |
0.0 |
0.0 |
|
NWL |
Set 1: September 5th
/ 14th |
3.4 |
11.9 |
Set 2: September 21st
/ 25th |
3.3 |
8.3 |
Table 5.5 Overall
dolphin encounter rates (sightings per 100 km of survey effort) from all four
HKBCF surveys conducted in September 2017 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 |
3.4 |
2.4 |
10.1 |
7.2 |
Table 6.1 Summary
of Environmental Site Inspections
Date of Audit |
Observations |
Actions Taken by Contractor / Recommendation |
Date of Observations Closed |
30 August 2017 |
1. Chemical containers were observed without proper labels. A chemical
container was observed without drip tray. |
1. Proper labels
were affixed to the chemical containers. The chemical containers were placed
within the drip trays to prevent potential leakage. |
6 September 2017 |
6 September 2017 |
No particular environmental issue was recorded during the site
inspection. |
Nil. |
Nil. |
13 September 2017 |
1. Dusty materials were placed without cover on 1/F at Row 4 PCB
Building. 2. More than 20 bags of cement were placed without cover on 1/F at Row
4 PCB Building. 3. General refuse was scattered on 1/F at Row 3 PCB Building. |
1. Dusty materials
were removed on 1/F at Row 4 PCB Building. 2. The cement bags
were provided cover on 1/F at Row 4 PCB Building. 3. General refuse
has been removed on 1/F at Row 3 PCB Building. |
20 September 2017 |
20 September 2017 |
1. A chemical drum was found without drip tray on G/F at Row 4 PCB Building. |
1. The chemical
containers was placed within a drip tray to prevent potential leakage on G/F at Row 4 PCB Building. |
27 September 2017 |
27 September 2017 |
1. Chemical drums were found without proper chemical labels on 1/F at Row 4 PCB Building. |
1. The Contractor
was reminded to provide proper chemical labels for the chemical drums. |
Follow-up action undertaken by the Contractor will be inspected during
the site inspection to be undertaken in October 2017. |
Table 7-1 Construction
Activities for October 2017
Site Area |
Description
of Activities |
Nature of
Activities |
WA1 |
Waterproofing
|
Land-Based |
WA1 |
Backfilling
|
Land-Based |
WA1 |
Formwork
and falsework stripping |
Land-Based |
WA1 |
Western
vertical column |
Land-Based |
WA1 |
Blockwork walls |
Land-Based |
WA1 |
Pipework and ductwork
installation |
Land-Based |
WA1 |
Hanger rods for cable container |
Land-Based |
WA1 |
Wet trade works |
Land-Based |
WA1 |
Dry trade works |
Land-Based |
WA1 |
Façade Bracket for Cabins |
Land-Based |
WA1 |
MEP High
Level Containment |
Land-Based |
WA1 |
Removal of temporary works |
Land-Based |
WA1 |
Window wall glazing |
Land-Based |
WA1 |
Heat
exchanger installation |
Land-Based |
WA1 |
Heavy MEP
plant set up in basement |
Land-Based |
WA1 |
Double
Bow Truss installation |
Land-Based |
WA1 |
Mullion
Frame Installation |
Land-Based |
WA1 |
Curtain
wall glaring |
Land-Based |
WA1 |
Hanging
scaffolding |
Land-Based |
WA1 |
Footbridge
construction |
Land-Based |
WA1 |
Roof
cladding |
Land-Based |
WA1 |
Refuse collection point |
Land-Based |
WA1 |
Southern
toilet |
Land-Based |
WA1 |
MISC steelwork |
Land-Based |
WA1 |
Lift
installation |
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 |
Seawater
intake seawall reinstatement |
Marine-Based |
WA1 |
Seawater
outfall pipe laying |
Marine-Based |
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 F
Wind Data
Appendix G
Calibration Certificates
Appendix H
Event and Action Plan
Appendix I
Waste Flow Table
Appendix J
Environmental Licenses and Permits
Appendix K
Implementation Schedule for Environmental
Mitigation Measures (EMIS)
Appendix L
Statistics on Environmental Complaints,
Notification of Summons and Successful Prosecutions
Appendix M
Environmental Site Inspection and Monitoring
Schedule
Appendix N
Investigation Report