Contract
No. HY/2011/03
Hong Kong-Zhuhai-Macao Bridge Hong Kong Link
Road
Section between Scenic Hill and Hong Kong Boundary Crossing
Facilities
Monthly EM&A Report No.54 (March 2017)
18 April 2017
Revision 1
Main
Contractor Designer
Contents
Executive Summary
1.1 Basic
Project Information. 1
1.4 Construction
Works Undertaken During the Reporting Month2
2....... Air
Quality Monitoring
2.1 Monitoring
Requirements. 4
2.4 Monitoring
Parameters, Frequency and Duration. 5
2.6 Monitoring
Schedule for the Reporting Month. 7
3.1 Monitoring
Requirements. 9
3.4 Monitoring
Parameters, Frequency and Duration. 9
3.5 Monitoring
Methodology. 10
3.6 Monitoring
Schedule for the Reporting Month. 10
4....... Water Quality Monitoring
4.1 Monitoring
Requirements. 12
4.3 Monitoring
Parameters, Frequency and Duration. 13
4.5 Monitoring
Methodology. 14
4.6 Monitoring
Schedule for the Reporting Month. 15
5.2 Monitoring
Methodology. 18
6.1 Sedimentation
Rate Monitoring. 23
6.2 Water
Quality Monitoring. 24
6.3 Mudflat
Ecology Monitoring Methodology. 25
6.4 Event
and Action Plan for Mudflat Monitoring26
6.5 Mudflat
Ecology Monitoring Results and Conclusion27
7....... Environmental
Site Inspection and Audit
7.2 Advice
on the Solid and Liquid Waste Management Status39
7.3 Environmental
Licenses and Permits. 40
7.4 Implementation
Status of Environmental Mitigation Measures40
7.5 Summary
of Exceedances of the Environmental Quality Performance Limit40
7.6 Summary
of Complaints, Notification of Summons and Successful Prosecution40
8.1 Construction
Programme for the Coming Months. 42
8.2 Environmental
Monitoring Schedule for the Coming Month42
Figures
Figure 1.1 Location
of the Site
Figure 2.1 Environmental
Monitoring Stations
Figure 6.1 Mudflat
Survey Area
Appendices
Appendix A Environmental
Management Structure
Appendix B Construction
Programme
Appendix C Calibration
Certificates
Appendix D Monitoring Schedule
Appendix E Monitoring
Data and Graphical Plots
Appendix F Event
and Action Plan
Appendix H Dolphin
Monitoring Results
Appendix I Mudflat
Monitoring Results
Appendix K Cumulative
Statistics on Complaints
Appendix L Environmental
Licenses and Permits
Appendix M Implementation
Schedule of Environmental Mitigation Measures
Executive
Summary
The Hong Kong-Zhuhai-Macao
Bridge (HZMB) Hong Kong Link Road (HKLR) serves to connect the HZMB Main Bridge
at the Hong Kong Special Administrative Region (HKSAR) Boundary and the HZMB
Hong Kong Boundary Crossing Facilities (HKBCF) located at the north eastern
waters of the Hong Kong International Airport (HKIA).
The HKLR project has been
separated into two contracts. They are Contract No. HY/2011/03 Hong
Kong-Zhuhai-Macao Bridge Hong Kong Link Road-Section between Scenic Hill and
Hong Kong Boundary Crossing Facilities (hereafter referred to as the Contract)
and Contract No. HY/2011/09 Hong Kong-Zhuhai-Macao Bridge Hong Kong Link
Road-Section between HKSAR Boundary and Scenic Hill.
China State Construction
Engineering (Hong Kong) Ltd. was awarded by Highways Department as the
Contractor to undertake the construction works of Contract No. HY/2011/03. The main works of the Contract include
land tunnel at Scenic Hill, tunnel underneath Airport Road and Airport Express
Line, reclamation and tunnel to the east coast of the Airport Island, at-grade
road connecting to the HKBCF and highway works of the HKBCF within the Airport
Island and in the vicinity of the HKLR reclamation. The Contract is part of the HKLR Project
and HKBCF Project, these projects are considered to be ˇ§Designated Projectsˇ¨,
under Schedule 2 of the Environmental Impact Assessment (EIA) Ordinance (Cap
499) and Environmental Impact Assessment (EIA) Reports (Register No.
AEIAR-144/2009 and AEIAR-145/2009) were prepared for the Project. The current Environmental Permit (EP)
EP-352/2009/D for HKLR and EP-353/2009/K for HKBCF were issued on 22 December
2014 and 11 April 2016, respectively. These documents are available through the
EIA Ordinance Register. The construction phase of Contract was
commenced on 17 October 2012.
BMT Asia Pacific 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 HKLR (Version 1.0) and will be providing
environmental team services to the Contract.
This is the fifty-fourth Monthly EM&A report for the Contract which
summarizes the monitoring results and audit findings of the EM&A programme
during the reporting period from 1 to 31 March 2017.
Environmental
Monitoring and Audit Progress
The monthly EM&A
programme was undertaken in accordance with the Updated EM&A Manual for
HKLR (Version 1.0). A summary of
the monitoring activities during this reporting month is listed below:
1-hr TSP
Monitoring |
1, 7, 13, 17, 23 and 29 March 2017 |
24-hr TSP
Monitoring |
6, 10, 16, 22 and 28 March 2017 |
Noise
Monitoring |
1, 7, 13, 23 and 29 March 2017 |
Water Quality
Monitoring |
1, 3, 6, 8, 10, 13, 15, 17, 20, 22, 24, 27, 29 and 31 March 2017 |
Mudflat Monitoring (Mudflat) |
3, 4, 10 and 14 March 2017 |
Mudflat Monitoring (Sedimentation Rate) |
28 March 2017 |
Chinese White
Dolphin Monitoring |
2, 7, 16 and
28 March 2017 |
Site
Inspection |
8, 15, 22 and
31 March 2017 |
Due
to boat availability, the dolphin monitoring schedule was rescheduled from 6
March 2017 to 7 March 2017. Due to weather condition, the dolphin monitoring
schedule was rescheduled from 15 March 2017 to 16 March 2017. Due to resource
arrangement, the dolphin monitoring schedule was rescheduled from 20 March 2017
to 28 March 2017. The water quality monitoring on 31 March 2017 during mid-ebb
tide was cancelled for safety reason as the thunderstorm signal was hoisted by
Hong Kong Observatory and lightning was recorded at the WQM stations. Due to
enough manpower for surveys at the same time, the mudflat monitoring was
rescheduled from 11 March 2017 to 4 March 2017 and from 13 March 2017 to 4
March 2017.
Breaches of Action and Limit Levels
A summary of environmental
exceedances for this reporting month is as follows:
Environmental Monitoring |
Parameters |
Action Level (AL) |
Limit Level (LL) |
Air Quality |
1-hr TSP |
0 |
0 |
24-hr TSP |
0 |
0 |
|
Noise |
Leq (30
min) |
0 |
0 |
Water Quality |
Suspended
solids level (SS) |
3 |
3 |
Turbidity
level |
2 |
0 |
|
Dissolved
oxygen level (DO) |
0 |
0 |
Complaint
Log
For Environmental Complaint
No. COM-2017-108 mentioned in previously Monthly EM&A Report for February
2017, it was considered that the complaint was unlikely related to Contract No.
HY/2011/03.
There was one complaint
received in relation to the environmental impacts during the reporting period. It was considered that the
complaint was unlikely related to Contract No. HY/2011/03. A summary of
environmental complaints for this reporting month is as follows:
Environmental Complaint No. |
Date of Complaint Received |
Description of Environmental Complaints |
COM-2017-112 |
27 March 2017 |
Noise and Water Quality |
Notifications
of Summons and Prosecutions
There were no notifications
of summons or prosecutions received during this reporting month.
Reporting
Changes
This report has been
developed in compliance with the reporting requirements for the subsequent
EM&A reports as required by the Updated EM&A Manual for HKLR (Version
1.0).
The proposal for the change
of Action Level and Limit Level for suspended solid and turbidity was approved
by EPD on 25 March 2013.
The revised Event and
Action Plan for dolphin monitoring was approved by EPD on 6 May 2013.
The original monitoring
station at IS(Mf)9 (Coordinate: 813273E, 818850N) was observed inside the
perimeter silt curtain of Contract HY/2010/02 on 1 July 2013, as such the original
impact water quality monitoring location at IS(Mf)9 was temporarily shifted
outside the silt curtain. As advised by the Contractor of HY/2010/02 in
August 2013, the perimeter silt curtain was shifted to facilitate safe
anchorage zone of construction barges/vessels until end of 2013 subject to
construction progress. Therefore,
water quality monitoring station IS(Mf)9 was shifted to 813226E and 818708N
since 1 July 2013. According to the
water quality monitoring teamˇ¦s observation on 24 March 2014, the original
monitoring location of IS(Mf)9 was no longer enclosed by the perimeter silt
curtain of Contract HY/2010/02. Thus, the impact water quality monitoring works
at the original monitoring location of IS(Mf)9 has been resumed since 24 March
2014.
Transect lines 1, 2, 7, 8,
9 and 11 for dolphin monitoring have been revised due to the obstruction of the
permanent structures associated with the construction works of HKLR and the
southern viaduct of TM-CLKL, as well as provision of adequate buffer distance
from the Airport Restricted Areas.
The EPD issued a memo and confirmed that they had no objection on the
revised transect lines on 19 August 2015.
The water quality
monitoring stations at IS10 (Coordinate: 812577E, 820670N) and SR5 (811489E,
820455N) are located inside Hong Kong International Airport (HKIA) Approach
Restricted Areas. The previously granted Vessel's Entry Permit for accessing
stations IS10 and SR5 were expired on 31 December 2016. During the permit
renewing process, the water quality monitoring location was shifted to IS10(N)
(Coordinate: 813060E, 820540N) and SR5(N) (Coordinate: 811430E, 820978N) on 2,
4 and 6 January 2017 temporarily. The permit has been granted by Marine
Department on 6 January 2017. Thus, the impact water quality monitoring works
at original monitoring location of IS10 and SR5 has been resumed since 9
January 2017.
Future
Key Issues
The future key issues
include potential noise, air quality, water quality and ecological impacts and
waste management arising from the following construction activities to be
undertaken in the upcoming month:
ˇP
Stockpiling
at WA7;
ˇP
Works for Diversion of Airport Road;
ˇP
Construction
of Tunnel Box Structure at Package T1.12.1 near Kwo Lo Wan Road;
ˇP
Construction
of Tunnel Box Structure at Shaft 3 Extension South Shaft;
ˇP
Superstructure Works for Scenic Hill Tunnel West Portal
Ventilation building at West Portal.
ˇP
New reclamation along the east coast
of the approximately 23 hectares.
ˇP
Tunnel of Scenic Hill (Tunnel SHT)
from Scenic Hill to the new reclamation, of approximately 1km in length with
three (3) lanes for the east bound carriageway heading to the HKBCF and four
(4) lanes for the westbound carriageway heading to the HZMB Main Bridge.
ˇP
An abutment of the viaduct portion of
the HKLR at the west portal of Tunnel SHT and associated road works at the west
portal of Tunnel SHT.
ˇP
An at grade road on the new
reclamation along the east coast of the HKIA to connect with the HKBCF, of
approximately 1.6 km along dual 3-lane carriageway with hard shoulder for each bound.
ˇP
Road links between the HKBCF and the
HKIA including new roads and the modification of existing roads at the HKIA,
involving viaducts, at grade roads and a Tunnel HAT.
ˇP
A highway operation and maintenance
area (HMA) located on the new reclamation, south of the Dragonair Headquarters
Building, including the construction of buildings, connection roads and other
associated facilities.
ˇP
Associated civil, structural,
building, geotechnical, marine, environmental protection, landscaping, drainage
and sewerage, tunnel and highway electrical and mechanical works, together with
the installation of street lightings, traffic aids and sign gantries, water
mains and fire hydrants, provision of facilities for installation of traffic
control and surveillance system (TCSS), reprovisioning works of affected
existing facilities, implementation of transplanting, compensatory planting and
protection of existing trees, and implementation of an environmental monitoring
and audit (EM&A) program.
Table 1.1 Contact
Information of Key Personnel
Party |
Position |
Name |
Telephone |
Fax |
Supervising Officerˇ¦s
Representative |
(Chief
Resident Engineer, CRE) |
Robert Antony
Evans |
3968 0801 |
2109 1882 |
Environmental Project Office /
Independent Environmental Checker |
Environmental Project Office Leader |
Y. H. Hui |
3465
2888 |
3465
2899 |
Independent Environmental Checker |
Antony Wong |
3465
2888 |
3465
2899 |
|
Contractor |
Project Manager |
S. Y. Tse |
3968
7002 |
2109
2588 |
Environmental Officer |
Federick Wong |
3968
7117 |
2109
2588 |
|
Environmental Team |
Environmental Team Leader |
Claudine Lee |
2241
9847 |
2815
3377 |
24
hours complaint hotline |
--- |
--- |
5699
5730 |
--- |
Table 1.2 Construction
Activities During Reporting Month
Description of Activities |
Site Area |
Stockpiling |
WA7 |
Dismantling/trimming of temporary 40mm stone platform for construction
of seawall |
Portion X |
Construction of seawall |
Portion X |
Loading and unloading of filling materials |
Portion X |
Construction of tunnel box structure at Scenic Hill Tunnel (Cut &
Cover Tunnel) |
Portion X |
Backfilling at Scenic Hill Tunnel (Cut & Cover Tunnel) |
Portion X |
Excavation for HKBCF to Airport Tunnel &
construction of tunnel box structure |
Portion X |
Excavation for diversion of culvert PR9 and PR14 |
Portion X |
Works for diversion |
Airport Road |
Utilities detection |
Airport Road/
Airport Express Line/ East Coast Road |
Establishment of site access |
Airport Road/
Airport Express Line/ East Coast Road |
Mined tunnel excavation/ box jacking underneath Airport Road and Airport Express Line |
Airport
Road and Airport
Express Line |
Construction of Tunnel box structure at Package T1.12.1 |
Near Kwo Lo
Wan Road |
Construction of Tunnel box structure |
Shaft 3
Extension South Shaft |
Excavation and lateral support works & Construction of Tunnel Box
Structure for HKBCF to Airport Tunnel West (Cut & Cover Tunnel) |
Airport Road |
Excavation and lateral support works & construction of tunnel box
structure for HKBCF to Airport Tunnel East (Cut & Cover Tunnel) |
Portion X |
Sub-structure & superstructure works for Highway Operation and
Maintenance Area Building |
Portion X |
Superstructure works for Scenic Hill Tunnel West Portal Ventilation
building |
West Portal |
Table
2.1 Action
and Limit Levels for 1-hour TSP
Monitoring
Station |
Action Level,
µg/m3 |
Limit Level,
µg/m3 |
AMS 5 ˇV Ma Wan Chung Village (Tung Chung) |
352 |
500 |
AMS 6 ˇV Dragonair / CNAC (Group) Building (HKIA) |
360 |
Table
2.2 Action
and Limit Levels for 24-hour TSP
Monitoring
Station |
Action Level,
µg/m3 |
Limit Level,
µg/m3 |
AMS 5 ˇV Ma Wan Chung Village (Tung Chung) |
164 |
260 |
AMS 6 ˇV Dragonair / CNAC (Group) Building (HKIA) |
173 |
260 |
Table
2.3 Air
Quality Monitoring Equipment
Equipment |
Brand and
Model |
Portable direct reading
dust meter (1-hour TSP) |
Sibata Digital Dust
Monitor (Model No. LD-3B) |
High Volume Sampler |
Tisch Environmental
Mass Flow Controlled Total Suspended Particulate (TSP) High Volume Air
Sampler (Model No. TE-5170) |
Table
2.4 Locations
of Impact Air Quality Monitoring Stations
Monitoring Station |
Location |
AMS5 |
Ma Wan Chung Village
(Tung Chung) |
AMS6 |
Dragonair / CNAC
(Group) Building (HKIA) |
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 ˇÓ2.5%
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
(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.
(ix) 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 C.
(a) Measuring Procedures
The measuring procedures of
the 1-hour dust meter were in accordance with the Manufacturerˇ¦s Instruction
Manual as follows:-
(i)
Turn
the power on.
(ii) Close the air collecting opening cover.
(iii) Push the ˇ§TIME SETTINGˇ¨ switch to [BG].
(iv) Push ˇ§START/STOPˇ¨ 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 ˇ§SPAN CHECKˇ¨ is
indicated in the display.
(vii) Push ˇ§START/STOPˇ¨ 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 ˇ§TIME SETTINGˇ¨ switch the time set in the
display to 3 hours.
(x) Lower down the air collection opening cover.
(xi) Push ˇ§START/STOPˇ¨ 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 C.
Table 2.6 Summary of 1-hour TSP
Monitoring Results During the Reporting Month
Monitoring Station |
Average (mg/m3) |
Range (mg/m3) |
Action Level (mg/m3) |
Limit Level (mg/m3) |
AMS5 |
87 |
35 ˇV 249 |
352 |
500 |
AMS6 |
109 |
59 ˇV 225 |
360 |
500 |
Table
2.7 Summary
of 24-hour
TSP Monitoring Results During the Reporting Month
Monitoring
Station |
Average (mg/m3) |
Range (mg/m3) |
Action
Level (mg/m3) |
Limit Level (mg/m3) |
AMS5 |
84 |
50 ˇV 143 |
164 |
260 |
AMS6 |
88 |
68 ˇV 108 |
173 |
260 |
Table 3.1 Action
and Limit Levels for Noise during Construction Period
Monitoring Station |
Time Period |
Action Level |
Limit Level |
NMS5 ˇV Ma Wan
Chung Village (Ma Wan Chung Resident Association) (Tung Chung) |
0700-1900
hours on normal weekdays |
When one
documented complaint is received |
75 dB(A) |
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 Locations
of Impact Noise Monitoring Stations
Monitoring Station |
Location |
NMS5 |
Ma Wan Chung
Village (Ma Wan Chung Resident Association) (Tung Chung) |
Table 3.4 Noise
Monitoring Parameters, Frequency and Duration
Parameter |
Frequency and Duration |
30-mins
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 sound level
meter was set on a tripod at a height of
(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. 07:00
ˇV 1900 on normal weekdays
(d) Prior to and
after each noise measurement, the meter was calibrated using the acoustic
calibrator for 94.0 dB(A) at 1000 Hz.
If the difference in the calibration level before and after measurement
was more than 1.0 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.
(f) 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.
(g) Noise monitoring
was cancelled in the presence of fog, rain, wind with a steady speed exceeding
(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 C.
Table
3.5 Summary
of Construction Noise Monitoring Results During the Reporting Month
Monitoring Station |
Average Leq (30 mins), dB(A) |
Range of Leq (30 mins), dB(A) |
Limit Level Leq (30 mins), dB(A) |
NMS5 |
59 |
55 ˇV 62 |
75 |
Table 4.1 Action
and Limit Levels for Water Quality
Parameter (unit) |
Water Depth |
Action Level |
Limit Level |
Dissolved
Oxygen (mg/L) (surface, middle and bottom) |
Surface and
Middle |
5.0 |
4.2 except 5
for Fish Culture Zone |
Bottom |
4.7 |
3.6 |
|
Turbidity
(NTU) |
Depth average |
27.5 or 120%
of upstream control stationˇ¦s turbidity at the same tide of the same day; The action
level has been amended to ˇ§27.5 and 120% of upstream control
stationˇ¦s turbidity at the same tide of the same dayˇ¨ since 25 March 2013. |
47.0 or 130%
of turbidity at the upstream control station at the same tide of same day; The limit
level has been amended to ˇ§47.0 and 130% of turbidity at the
upstream control station at the same tide of same dayˇ¨ since 25 March 2013. |
Suspended
Solid (SS) (mg/L) |
Depth average |
23.5 or 120%
of upstream control stationˇ¦s SS at the same tide of the same day; The action
level has been amended to ˇ§23.5 and 120% of upstream control
stationˇ¦s SS at the same tide of the same dayˇ¨ since 25 March 2013. |
34.4 or 130%
of SS at the upstream control station at the same tide of same day and 10mg/L
for Water Services Department Seawater Intakes; The limit
level has been amended to ˇ§34.4 and 130% of SS at the upstream
control station at the same tide of same day and 10mg/L for Water Services
Department Seawater Intakesˇ¨ since 25 March 2013 |
Notes:
(1) Depth-averaged is
calculated by taking the arithmetic means of reading of all three depths.
(2) For DO, non-compliance
of the water quality limit occurs when monitoring result is lower that the
limit.
(3) For SS & turbidity
non-compliance of the water quality limits occur when monitoring result is
higher than the limits.
(4) The change to the
Action and limit Levels for Water Quality Monitoring for the EM&A works was
approved by EPD on 25 March 2013.
Table 4.2 Water
Quality Monitoring Equipment
Equipment |
Brand and Model |
DO and
Temperature Meter, Salinity Meter, Turbidimeter and pH Meter |
YSI Model 6820
V2-M, 650 |
Positioning
Equipment |
DGPS ˇV KODEN :
KGP913MkII, KBG3 |
Water Depth
Detector |
Layin
Associates: SM-5 & SM5A |
Water Sampler |
Wildlife
Supply Company : 5487-10 |
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: |
ˇP
Depth, m ˇP
Temperature, oC ˇP
Salinity, ppt ˇP
Dissolved Oxygen (DO), mg/L ˇP
DO Saturation, % ˇP
Turbidity, NTU ˇP
pH ˇP
Suspended Solids (SS), mg/L |
Three times per week
during mid-ebb and mid-flood tides (within ˇÓ 1.75 hour of the predicted time) |
3 (1 m below water surface,
mid-depth and 1 m above sea bed, except where the water depth is less than 6
m, in which case the mid-depth station may be omitted. Should the water depth
be less than 3 m, only the mid-depth station will be monitored). |
Table 4.4 Impact
Water Quality Monitoring Stations
Monitoring Stations |
Description |
Coordinates |
|
Easting |
Northing |
||
IS5 |
Impact Station
(Close to HKLR construction site) |
811579 |
817106 |
IS(Mf)6 |
Impact Station
(Close to HKLR 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 |
Impact Station
(Close to HKBCF construction site) |
812577 |
820670 |
SR3 |
Sensitive
receivers (San Tau SSSI) |
810525 |
816456 |
SR4 |
Sensitive
receivers (Tai Ho Inlet) |
814760 |
817867 |
SR5 |
Sensitive
receivers (Artificial Reef In NE Airport) |
811489 |
820455 |
SR10A |
Sensitive
receivers (Ma Wan Fish Culture Zone) |
823741 |
823495 |
SR10B |
Sensitive
receivers (Ma Wan Fish Culture Zone) |
823686 |
823213 |
CS2 |
Control
Station (Mid-Ebb) |
805849 |
818780 |
CS(Mf)5 |
Control
Station (Mid-Flood) |
817990 |
821129 |
(a) The
in-situ water quality parameters including dissolved oxygen, temperature, salinity
and turbidity, pH were measured by multi-parameter meters.
(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, 1 m below water surface, mid-depth and 1 m above sea bed, except
where the water depth was less than 6 m, in which case the mid-depth station
was omitted. Should the water depth be less than 3 m, 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 4oC 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.
(f) The analysis method and detection limit for
SS is shown in Table 4.5.
Table
4.5 Laboratory Analysis
for Suspended Solids
Parameters |
Instrumentation |
Analytical Method |
Detection Limit |
Suspended
Solid (SS) |
Weighting |
APHA 2540-D |
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.
Station |
Exceedance Level |
DO (S&M) |
DO (Bottom) |
Turbidity |
SS |
Total number of exceedances |
|||||
Ebb |
Flood |
Ebb |
Flood |
Ebb |
Flood |
Ebb |
Flood |
Ebb |
Flood |
||
IS5 |
Action Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
Limit Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
|
IS(Mf)6 |
Action Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
Limit Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
|
IS7 |
Action Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
Limit Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
|
IS8 |
Action Level |
-- |
-- |
-- |
-- |
-- |
24
Mar 2017 |
24
and 27 Mar 2017 |
-- |
2 |
1 |
Limit Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
24
Mar 2017 |
0 |
1 |
|
IS(Mf)9 |
Action Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
Limit Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
|
IS10 |
Action Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
Limit Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
|
SR3 |
Action Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
Limit Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
|
SR4 |
Action Level |
-- |
-- |
-- |
-- |
-- |
24
Mar 2017 |
-- |
-- |
0 |
1 |
Limit Level |
-- |
-- |
-- |
-- |
-- |
-- |
24
Mar 2017 |
24
Mar 2017 |
1 |
1 |
|
SR5 |
Action Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
3
Mar 2017 |
0 |
1 |
Limit Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
|
SR10A |
Action Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
Limit Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
|
SR10B |
Action Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
Limit Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
|
Total |
Action |
0 |
0 |
0 |
0 |
0 |
2 |
2 |
1 |
5** |
|
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
2 |
3** |
Notes:
S: Surface;
M: Mid-depth;
** The total number of exceedances
Table 5.1 Action
and Limit Levels for 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) |
Remarks:
1. STG means quarterly encounter rate of number of dolphin sightings.
2. ANI means quarterly encounter rate of total number of dolphins.
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 Co-ordinates
of Transect Lines
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 |
805475 |
815913* |
|
14 |
Start Point |
817537 |
820220 |
2 |
End Point |
805477 |
826654 |
|
14 |
End Point |
817537 |
824613 |
3 |
Start Point |
806464 |
819435 |
|
15 |
Start Point |
818568 |
820735 |
3 |
End Point |
806464 |
822911 |
|
15 |
End Point |
818568 |
824433 |
4 |
Start Point |
807518 |
819771 |
|
16 |
Start Point |
819532 |
821420 |
4 |
End Point |
807518 |
829230 |
|
16 |
End Point |
819532 |
824209 |
5 |
Start Point |
808504 |
820220 |
|
17 |
Start Point |
820451 |
822125 |
5 |
End Point |
808504 |
828602 |
|
17 |
End Point |
820451 |
823671 |
6 |
Start Point |
809490 |
820466 |
|
18 |
Start Point |
821504 |
822371 |
6 |
End Point |
809490 |
825352 |
|
18 |
End Point |
821504 |
823761 |
7 |
Start Point |
810499 |
820880* |
|
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 |
820872 |
|
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 |
|
|
|
|
|
12 |
End Point |
815542 |
824882 |
|
|
|
|
|
Note:
Co-ordinates in red and marked with asterisk are revised co-ordinates of
transect line.
Table 5.3 Individual
Survey Event Encounter Rates
|
Encounter rate (STG) (no. of on-effort
dolphin sightings per 100 km of survey effort) |
Encounter rate (ANI) (no. of dolphins from
all on-effort sightings per 100 km of survey effort) |
|
Primary Lines Only |
Primary Lines Only |
||
NEL |
Set 1: March 2nd / 7th |
0.0 |
0.0 |
Set 2: March 16th / 28th |
0.0 |
0.0 |
|
NWL |
Set 1: March 2nd / 7th |
0.0 |
0.0 |
Set 2: March 16th / 28th |
2.0 |
24.4 |
Remarks:
1. Dolphin Encounter Rates Deduced from the Two
Sets of Surveys (Two Surveys in Each Set) in March 2017 in
Northeast Lantau (NEL) and Northwest Lantau (NWL).
Table 5.4 Monthly
Average Encounter Rates
|
Encounter rate (STG) (no. of on-effort dolphin sightings per 100 km of survey effort) |
Encounter rate (ANI) (no. of dolphins from all on-effort sightings per 100 km of survey
effort) |
||
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 |
1.0 |
1.5 |
11.6 |
15.1 |
Remarks:
1.
Monthly Average Dolphin
Encounter Rates (Sightings Per 100 km of Survey Effort) from All Four Surveys
Conducted in March 2017 on Primary Lines only as well as Both Primary
Lines and Secondary Lines in Northeast Lantau (NEL) and Northwest Lantau (NWL).
Table 6.1 Reference
Station Survey result and GNSS RTK calibration result of Round 1
Reference Station |
Easting (m) |
Northing (m) |
Baseline reference elevation (mPD) (A) |
Round 1 Survey (mPD) (B) |
Calibration Adjustment (B-A) |
T1 |
811248.660mE |
816393.173mN |
3.840 |
3.817 |
-0.023 |
T2 |
810806.297mE |
815691.822mN |
4.625 |
4.653 |
+0.028 |
T3 |
810778.098mE |
815689.918mN |
4.651 |
4.660 |
+0.009 |
T4 |
810274.783mE |
816689.068mN |
2.637 |
2.709 |
+0.072 |
Table 6.2 Measured
Mudflat Surface Level Results
Baseline Monitoring (September 2012) |
Impact Monitoring (March 2017) |
|||||
Monitoring
Station |
Easting
(m) |
Northing
(m) |
Surface
Level (mPD) |
Easting
(m) |
Northing
(m) |
Surface
Level (mPD) |
S1 |
810291.160 |
816678.727 |
0.950 |
810291.163 |
816678.732 |
1.129 |
S2 |
810958.272 |
815831.531 |
0.864 |
810958.261 |
815831.516 |
0.992 |
S3 |
810716.585 |
815953.308 |
1.341 |
810716.590 |
815953.300 |
1.468 |
S4 |
811221.433 |
816151.381 |
0.931 |
811221.411 |
816151.399 |
1.118 |
Table 6.3 Comparison
of measurement
Comparison of measurement |
Remarks and Recommendation |
|||
Monitoring
Station |
Easting
(m) |
Northing
(m) |
Surface
Level (mPD) |
|
S1 |
0.003 |
0.005 |
0.179 |
Level
continuously increased |
S2 |
-0.011 |
-0.015 |
0.128 |
Level
continuously increased |
S3 |
0.005 |
-0.008 |
0.127 |
Level
continuously increased |
S4 |
-0.022 |
0.018 |
0.187 |
Level
continuously increased |
Table 6.4 Impact
Water Quality Monitoring Results (Depth Average)
Date |
Mid Ebb Tide |
Mid Flood Tide |
||||
DO (mg/L) |
Turbidity (NTU) |
SS (mg/L) |
DO (mg/L) |
Turbidity (NTU) |
SS (mg/L) |
|
1-Mar-17 |
7.75 |
9.55 |
14.75 |
7.69 |
8.50 |
10.65 |
3-Mar-17 |
7.80 |
8.45 |
16.15 |
7.72 |
8.65 |
18.05 |
5-Mar-17 |
7.73 |
4.25 |
5.75 |
7.76 |
3.70 |
3.20 |
8-Mar-17 |
7.58 |
3.70 |
6.65 |
7.75 |
4.30 |
5.95 |
10-Mar-17 |
7.66 |
6.00 |
10.15 |
7.60 |
5.45 |
11.60 |
13-Mar-17 |
7.39 |
10.30 |
20.90 |
7.44 |
11.60 |
21.45 |
15-Mar-17 |
7.56 |
10.50 |
17.10 |
7.38 |
9.95 |
19.85 |
17-Mar-17 |
7.53 |
9.25 |
17.75 |
7.44 |
9.35 |
19.10 |
20-Mar-17 |
7.59 |
6.15 |
9.95 |
7.53 |
7.60 |
8.60 |
22-Mar-17 |
7.47 |
3.40 |
9.50 |
7.77 |
4.50 |
7.40 |
24-Mar-17 |
7.58 |
5.15 |
8.45 |
7.86 |
5.10 |
8.30 |
27-Mar-17 |
7.48 |
6.75 |
10.90 |
7.20 |
6.00 |
8.10 |
29-Mar-17 |
7.14 |
10.50 |
13.40 |
7.28 |
8.80 |
10.20 |
31-Mar-17 |
See Remark 1 |
See Remark 1 |
See Remark 1 |
7.15 |
11.25 |
18.20 |
Average |
7.56 |
7.23 |
12.42 |
7.54 |
7.48 |
12.19 |
Remark: 1)
The water quality monitoring (WQM) on 31 March 2017 during mid-ebb tide was
cancelled for safety reason as the thunderstorm signal was hoisted by
Hong Kong Observatory and lightning was recorded at the WQM stations. |
Hˇ¦= -ŁU ( Ni / N )
ln ( Ni / N ) (Shannon and Weaver, 1963)
J = Hˇ¦ / ln S, (Pielou, 1966)
where S is the
total number of species in the sample, N is the total number of individuals,
and Ni is the number of individuals of the ith species.
Table
6.5 Event and
Action Plan for Mudflat Monitoring
Event |
ET Leader |
IEC |
SO |
Contractor |
Density or the
distribution pattern of horseshoe crab, seagrass or intertidal soft shore
communities recorded in the impact or post-construction monitoring are significantly lower than or different
from those recorded in the baseline monitoring. |
Review historical data
to ensure differences are as a result of natural variation or previously
observed seasonal differences; Identify source(s) of
impact; Inform the IEC, SO and
Contractor; Check monitoring data; Discuss additional
monitoring and any other measures, with the IEC and Contractor. |
Discuss monitoring with
the ET and the Contractor; Review proposals for
additional monitoring and any other measures submitted by the Contractor and
advise the SO accordingly. |
Discuss with the IEC
additional monitoring requirements and any other measures proposed by the ET;
Make agreement on the
measures to be implemented. |
Inform the SO and in
writing; Discuss with the ET and
the IEC and propose measures to the IEC and the ER; Implement the agreed
measures. |
Notes:
ET ˇV
Environmental Team
IEC ˇV Independent
Environmental Checker
SO ˇV Supervising
Officer
Population difference among the sampling zones
Box plot of
horseshoe crab populations in TC3
Impact
of the HKLR project
Temporal variation of seagrass beds
Unfavourable conditions to seagrass Halophila ovalis
Recolonization of seagrass beds
Impact of the HKLR project
Dominant species in every sampling zone
Biodiversity and abundance of soft shore
communities
Table 7.1 Summary
of Environmental Site Inspections
Date of Audit |
Observations |
Actions Taken
by Contractor / Recommendation |
Date of
Observations Closed |
28 Feb 2017 |
1.
Enclosure was not provided for grouting station at N26.
However,
the grouting station was not in operation. 2.
Drip tray was not provided for a chemical drum at N26. 3.
Drip tray was not provided for chemical drums at N26. 4.
Drip tray was not provided for chemical drum at N26. |
1.
An enclosure was provided for the grouting at N26. 2.
The chemical drum was removed from N26. 3.
The chemical drums were removed from N26. 4.
The chemical drum was removed from N26. |
8 Mar 2017 |
8 Mar 2017 |
1.
More than 20 bags of cement were
not covered at HMA. 2.
Blue hoses were not properly
placed at S9. 3.
Gap of silt curtain was observed
at Portion X. 4.
Waste was accumulated at N1. 5.
The checklist of wet separator
was note updated at N1. 6.
Waste was accumulated at
Ventilation Building. 7. Waste was accumulated at WA6. |
1.
The cement bags were
covered by impervious sheeting at HMA. 2.
The blue hoses were removed from S9. 3.
The silt curtain was maintained at Portion X. 4.
The waste was removed from N1. 5.
The checklist for wet separator was updated. 6.
The waste was
removed from Ventilation Building. 7.
The waste was removed from WA6. |
15 Mar 2017 |
15 Mar 2017 |
1.
No drip tray was provided for the chemical containers at C&C. 2.
Waste was accumulated at C&C. 3.
More than 20 bags of cement were not covered at C&C. 4.
Waste was accumulated at HMA. 5.
Unused cement and cement bags were not handling properly at HMA. 6.
Gap of silt curtain was observed at Portion X. 7.
No drip tray was provided
for oil drums at PR9. 8.
Waste was accumulated at PR14. 9.
Waste was accumulated at S25. 10.
Waste was accumulated at Ventilation Building. |
1.
The chemical
containers were removed from C&C. 2.
The waste was removed from C&C. 3.
The cement bags were cover by impervious sheeting at C&C. 4.
The waste was removed from HMA. 5.
The unused cement and cement bags were removed from HMA. 6.
The silt curtain was repaired at Portion X. 7.
The oil drums were removed from PR9. 8.
The waste was removed from PR14. 9.
The waste was removed from S25. 10.
The waste was removed from Ventilation Building. |
22 Mar 2017 |
22 Mar 2017 |
1.
General waste was accumulated at HMA. 2.
Concrete waste was accumulated at HMA. 3.
Gap of silt curtain was observed at Portion X. 4.
Waste was accumulated in a skip at S9. 5.
General waste was accumulated outside the Ventilation
Building. 6.
Construction waste was accumulated inside the
Ventilation Building. 7.
No drip tray was provided for the chemical containers
at Ying Lee Workshop. |
1.
The general waste was removed from HMA. 2.
The concrete waste was removed from HMA. 3.
The silt curtain was maintained properly at Portion X. 4.
The waste accumulated in the skip was removed from S9. 5.
The general waste was removed from the Ventilation Building. 6.
The construction waste was removed from the Ventilation Building. 7.
The chemical containers were removed from Ying Lee
Workshop. |
31 Mar 2017 |
31 Mar 2017 |
1.
More than 20 bags of cement were not properly covered
at the Ventilation Building. 2.
No drip tray was provided for a chemical container at
the Ventilation Building. 3.
No drip tray was provided for a chemical drum at the
Ventilation Building. 4.
Waste was accumulated at N1. 5. Waste was
accumulated at S25. |
The Contractor was recommended to: 1.
Cover the cement bags
properly with impervious sheeting at the Ventilation Building. 2.
Provide drip tray for the
chemical container at the Ventilation Building. 3.
Provide drip tray for the
chemical drum at the Ventilation Building. 4.
Remove the waste accumulated
at N1. 5.
Remove the waste accumulated
at S25. |
Follow-up actions for
the observations issued for the last weekly site inspection of
the reporting month will be inspected during the next site inspections |
Table 7.2 A
Summary of Environmental Complaint for the Reporting Month
Environmental
Complaint No. |
Date of Complaint
Received |
Description of
Environmental Complaint |
COM-2017-112 |
27 March 2017 |
Noise and Water Quality near the artificial island |
Table
8.1 Construction
Activities for April 2017
Site Area |
Description of
Activities |
WA7 |
Stockpiling |
Portion X |
Dismantling/Trimming of Temporary 40mm Stone
Platform for Construction of Seawall |
Portion X |
Construction of Seawall |
Portion X |
Loading and Unloading of
Filling Materials |
Portion X |
Backfilling at Scenic Hill Tunnel (Cut &
Cover Tunnel) |
Portion X |
Construction of Tunnel Box Structure at Scenic
Hill Tunnel (Cut & Cover Tunnel) |
Portion X |
Excavation for HKBCF to Airport Tunnel &
Construction of Tunnel Box structure |
Portion X |
Excavation for Diversion of Culvert PR9 and PR14 |
Airport Road |
Works for Diversion of
Airport Road |
Airport Road / Airport Express Line / East Coast
Road |
Utilities Detection |
Airport Road / Airport Express Line/ East Coast
Road |
Establishment of Site Access |
Airport Road / Airport Express Line |
Mined Tunnel Excavation / Box Jacking underneath
Airport Road and Airport Express Line |
Near Kwo Lo Wan Road |
Construction of Tunnel Box Structure at Package
T1.12.1 |
Shaft 3 Extension South Shaft |
Construction of Tunnel Box Structure |
Airport Road |
Excavation and Lateral Support Works &
Construction of Tunnel Box Structure for HKBCF to Airport Tunnel West (Cut
& Cover Tunnel) |
Portion X |
Excavation and Lateral Support Works &
Construction of Tunnel Box Structure for HKBCF to Airport Tunnel East (Cut
& Cover Tunnel) |
Portion X |
Sub-structure & Superstructure Works for
Highway Operation and Maintenance Area Building |
West Portal |
Superstructure Works for Scenic Hill Tunnel West
Portal Ventilation building |