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.41 (February 2016)
11 March 2016
Revision 1
Main Contractor Designer
Contents
Executive Summary
1.4 Construction Works Undertaken During the Reporting Month
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
4.6 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 Exceedances 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 Monitoring Schedule for the Coming Month
Figures
Figure 1.1 Location of
the Site
Figure 2.1 Environmental
Monitoring Stations
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 J Cumulative
Statistics on Complaints
Appendix K Environmental
Licenses and Permits
Appendix L Implementation Schedule
of Environmental Mitigation Measures
Appendix N Location of
Works Areas
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
¡§Designated Projects¡¨, 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/J for HKBCF were issued on 22 December
2014 and 25 February 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 41st 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 29 February 2016.
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 |
2, 6, 12, 18 and 24 February 2016 |
24-hr TSP
Monitoring at station AMS5 |
1, 5, 17, 18,
23 and 29 February 2016 |
24-hr TSP
Monitoring at station AMS6 |
1,
5, 11, 17, 23 and 29 February 2016 |
Noise
Monitoring |
2, 12, 18 and 24 February 2016 |
Water Quality
Monitoring |
1, 3, 5, 11, 13, 15, 17, 19, 22, 24, 26 and 29 February 2016 |
Chinese White
Dolphin Monitoring |
2, 3, 16 and 22 February 2016 |
Site
Inspection |
3, 12, 15 and
26 February 2016 |
The monitoring period of the 24-hr TSP monitoring on 11 February 2016
was less than 24 hours due to malfunction of HVS at AMS5. Therefore, the 24-hr TSP monitoring on
11 February 2016 was rescheduled to 18 February 2016. As informed by the Contractor on 29 January 2016,
no marine work was undertaken by Contract no. HY/2011/03 during the Chinese
New Year Period from 7 - 10 February 2016. Therefore, the scheduled impact water
quality monitoring on 8 February 2016 was cancelled and water quality
monitoring on 10 and12 February 2016 were rescheduled to 11 and 13 February
2016. Due to weather condition, the dolphin monitoring schedule was
rescheduled from 1 February 2016 to 2 February 2016. |
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) |
1 |
1 |
Turbidity level |
0 |
2 |
|
Dissolved oxygen level (DO) |
0 |
0 |
|
Dolphin Monitoring |
Quarterly Analysis (Dec 2015 to Feb
2016) |
0 |
1 |
An Action Level exceedance
and a Limit Level exceedance of suspended solids level and two Limit level
exceedances of turbidity level were recorded during the reporting month.
There was a Limit Level
exceedance of dolphin monitoring for the quarterly monitoring data (between December 2015 ¡V February 2016). The exceedances
will be reported in the quarterly report for December 2015 to February 2016.
Complaint
Log
There were no complaints
received in relation to the environmental impacts during the reporting
period.
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- East:813273, North 818850) 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 team¡¦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.
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:
¡P
Jet
Grouting works for HKBCF to Airport Tunnel East (Cut & Cover Tunnel) at
Portion X;
¡P
Superstructure works for Scenic Hill
Tunnel West Portal Ventilation building at West Portal.
¡P
New reclamation
along the east coast of the approximately 23 hectares.
¡P
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.
¡P
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.
¡P
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.
¡P
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.
¡P
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.
¡P
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 Officer¡¦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 |
Dismantling/trimming
of temporary 40mm stone platform for construction of seawall |
Portion X |
Filling works behind
stone platform |
Portion X |
Construction of
seawall |
Portion X |
Loading and
unloading of filling materials |
Portion X |
Excavation and
lateral support works for Scenic Hill
Tunnel (Cut & Cover Tunnel) |
Portion X |
Construction of
tunnel box structure at Scenic Hill Tunnel (Cut & Cover Tunnel) |
Portion X |
Pipe piling works
for HKBCF to Airport Tunnel East (Cut & Cover Tunnel) |
Portion X |
Excavation for HKBCF
to Airport Tunnel |
Portion X |
Sheet Piling Works for HKBCF to Airport Tunnel East
(Cut & Cover Tunnel) |
Portion X |
Socket H-Piling Works for HKBCF to Airport Tunnel
East (Cut &Cover Tunnel) |
Portion X |
Superstructure works
for Scenic Hill Tunnel West Portal Ventilation building |
West Portal |
Excavation for diversion of culvert PR10 |
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 |
Canopy pipe drilling
/ Box Jacking underneath
Airport Express Line |
Airport Express Line |
Pipe roofing drilling
/ Mined Tunnel excavation underneath Airport Road |
Airport Road |
Excavation and
lateral support works at shaft 3 extension north shaft |
Kwo
Lo Wan Road |
Excavation and
Lateral Support Works for HKBCF to Airport Tunnel West (Cut & Cover
Tunnel) |
Airport Road |
Utility culvert
excavation |
Portion Y |
Sub-structure &
superstructure works for Highway Operation and Maintenance Area Building |
Portion Y |
Table 2.1 Action
and Limit Levels for 1-hour TSP
Monitoring
Station |
Action Level,
µg/m3 |
Limit Level,
µg/m3 |
AMS 5 ¡V Ma Wan Chung Village (Tung Chung) |
352 |
500 |
AMS 6 ¡V 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 ¡V Ma Wan Chung Village (Tung Chung) |
164 |
260 |
AMS 6 ¡V 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 ¡Ó2.5%
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 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 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 |
138 |
88 - 213 |
352 |
500 |
AMS6 |
134 |
82 - 181 |
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 |
51 |
18 - 102 |
164 |
260 |
AMS6 |
73 |
27 - 134 |
173 |
260 |
Table 3.1 Action
and Limit Levels for Noise during Construction Period
Monitoring Station |
Time Period |
Action Level |
Limit Level |
NMS5 ¡V 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 ¡V 1900 on normal weekdays
(e) 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.
(f) 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
(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 |
61 |
59 ¡V 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 station¡¦s turbidity at the same tide of the same day; The action
level has been amended to ¡§27.5 and 120% of upstream control
station¡¦s turbidity at the same tide of the same day¡¨ 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 ¡§47.0 and 130% of turbidity at the
upstream control station at the same tide of same day¡¨ since 25 March 2013. |
Suspended
Solid (SS) (mg/L) |
Depth average |
23.5 or 120%
of upstream control station¡¦s SS at the same tide of the same day; The action
level has been amended to ¡§23.5 and 120% of upstream control
station¡¦s SS at the same tide of the same day¡¨ 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 ¡§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 Intakes¡¨ 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 ¡V 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: |
¡P
Depth, m ¡P
Temperature, oC ¡P
Salinity, ppt ¡P
Dissolved Oxygen
(DO), mg/L ¡P
DO Saturation, % ¡P
Turbidity, NTU ¡P
pH ¡P Suspended Solids (SS), mg/L |
Three times per week
during mid-ebb and mid-flood tides (within ¡Ó 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.
Table 4.6 Summary
of Water Quality Exceedances
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 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
5
Feb 2016 |
0 |
1 |
Limit Level |
-- |
-- |
-- |
-- |
-- |
5
Feb 2016 |
-- |
-- |
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 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
Limit Level |
-- |
-- |
-- |
-- |
-- |
5
Feb 2016 |
-- |
5
Feb 2016 |
0 |
2 |
|
SR5 |
Action Level |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0 |
0 |
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 |
0 |
0 |
1 |
1** |
|
Limit |
0 |
0 |
0 |
0 |
0 |
2 |
0 |
1 |
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: February 2nd / 3rd |
0.0 |
0.0 |
Set 2: February 16th / 22nd |
0.0 |
0.0 |
|
NWL |
Set 1: February 2nd / 3rd |
1.4 |
6.8 |
Set 2: February 16th / 22nd |
1.4 |
8.7 |
Remarks:
1. Dolphin Encounter Rates Deduced from the Two
Sets of Surveys (Two Surveys in Each Set) in February 2016 in Northeast (NEL) and Northwest Lantau (NWL).
Table 5.4 Monthly
Average Encounter Rates
|
(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 |
1.4 |
1.1 |
7.7 |
6.1 |
Remarks:
1.
Monthly Average Dolphin Encounter Rates (Sightings Per 100 km of Survey
Effort) from All Four Surveys Conducted in February 2016 on Primary Lines only as well as Both Primary
Lines and Secondary Lines in Northeast (NEL) and Northwest Lantau (NWL).
Table 6.1 Summary of Environmental Site Inspections
Date
of Audit |
Observations |
Actions
Taken by Contractor / Recommendation |
Date
of Observations Closed |
2
Dec 2015 |
1. A slit
curtain was not properly aligned near S7. 2. Some of
barriers were placed with adsorptive side facing NSRs at S16. |
1. The silt
curtain was aligned properly near S7. 2. The noise
barriers were removed at S16. |
12 Feb 2016 |
17
Dec 2015 |
1. A slit
curtain was not properly aligned at Portion X. |
1. The silt
curtain was aligned properly at Portion X. |
12 Feb 2016 |
29 Jan 2016 |
1. Concrete waste was observed at N1. 2. Cement bags were not covered with impervious sheets at
several locations at N1. 3. Rubbish scattered on ground was observed at several
locations at N1. 4. Stagnant water was observed at N1. 5. No drip tray was provided for chemical drums at N1. |
1. The concrete
waste was cleared at N1. 2. The cement
bags were covered entirely by the impervious sheets at N1. 3. The rubbish
was cleared at N1. 4. The stagnant
water was cleared at N1. 5. A drip tray
was provided for chemical containers at N1. |
3 Feb 2016 |
3 Feb 2016 |
1. Accumulated construction waste was observed at A2 bridge. 2. No proper protection was provided along the deck of the
barging point at S7 to avoid dropping the filling material into the sea. 3. Dusty materials were scattered along roadside of S7. 4. The capacity of the sedimentation tank at S11 should be
increased as the treated water is muddy. 5. Muddy water was discharged at S11. 6. Sand was scattered at roadside of S25. 7. No wheel washing facilities was provided at the exit of
S25. |
1. The accumulated construction waste was cleared at A2 bridge. 2. Sand bags were provided along the haul road of the barging
point at S7. 3. The dusty materials were cleared at S7. 4. The wastewater inside the sedimentation tank was clear. 5. Wastewater generated from the construction sites was connect to wastewater treatment facility for treatment and
no muddy water discharge was observed.at S11. 6. The sand scattered at roadside of S25 was cleared. 7. Wheel washing was provided for vehicles leaving the
construction site at S25. |
12 Feb 2016 |
12
Feb 2016 |
1. General refuse was scattered on the ground at S15. 2. Construction waste/general refuse was accumulated at S11. 3. A chemical drum was placed on bare ground at S11. |
1. The general refuse was cleared at S15. 2. The construction waste/general refuse was cleared at S11. 3. The chemical drum was placed inside a drip tray at S11. |
15 Feb 2016 |
15
Feb 2016 |
1.No
drip tray was provided for an oil drum and chemical containers at HMA. 2.Milky
wastewater was observed at discharge point PR10 at S9. 3. No proper protection was provided along the seafront at
S11. 4. No drip tray was provided for chemical containers at S23. 5. Accumulated sediment was observed inside a wastewater
treatment facility S23. |
1. A drip tray was provided for the oil drum and the chemical
containers were removed at HMA. 2. The wastewater was treated at S9. No milky wastewater
discharge was observed. 3. Sand bags were provided along seafront at S11. 4. A drip tray was provided for the chemical containers at
S23. 5. The accumulated sediment inside the wastewater treatment
facility was cleared at S23. |
26 Feb 2016 |
26 Feb 2016 |
1. Gap between two silt curtains were observed at Portion X.
2.Stagnant water was observed at S8. Prompt removal of
stagnant water is needed to avoid mosquito breeding. 3.It was unclear about the source of effluent discharge at
S11. 4.A gap was observed along the bund at S11. 5.Rubbish was accumulated at S11. 6.Black smoke emitting from a piling rig was observed at
S15. 7.No drip tray was provided for chemical drums at S15.
8.Stagnant water was observed at S15. . 9.No drip tray was provided for a chemical container at
S15. |
The Contractor was recommended to: 1. Inspect and maintain the silt curtains properly at Portion
X. 2. Remove the stagnant water promptly to avoid mosquito
breeding at S8. 3. Provide clear indication of the pipe to show the source of
effluent discharge at S11. 4. Provide rectification immediately to avoid surface runoff
from discharging to the sea at S11. 5. Remove the rubbish at S11. 6. Provide proper maintenance to the piling rig at S15. 7. Provide drip trays for the chemical drums at S15. 8. Remove the stagnant water to avoid mosquito breeding at
S15. 9. Provide a drip tray for the chemical container at
S15. |
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. |
Notes:
* Outstanding
observations.
Table 7.1 Construction
Activities for March 2016
Site Area |
Description of
Activities |
Portion X |
Dismantling/Trimming
of Temporary 40mm Stone Platform for Construction of Seawall |
Portion X |
Filling
Works behind Stone Platform |
Portion X |
Construction of Seawall |
Portion X |
Loading and Unloading of Filling
Material |
Portion X |
Pipe Piling |
Portion X |
Excavation and Lateral Support Works at Scenic
Hill Tunnel (Cut & Cover Tunnel) |
Portion X |
Construction of Tunnel Box Structure at Scenic
Hill Tunnel (Cut & Cover Tunnel) |
Portion X and Y |
Pipe piling works for Scenic Hill Tunnel (Cut & Cover Tunnel) |
Portion X |
Excavation Works for HKBCF to Airport Tunnel |
Portion X |
Sheet Piling Works for HKBCF to Airport Tunnel
East (Cut & Cover Tunnel) |
Portion X |
Socket H-Piling works for HKBCF to Airport Tunnel
East (Cut & Cover Tunnel) |
Portion X |
Pipe Piling works for HKBCF to Airport Tunnel
East (Cut &Cover Tunnel) |
Portion X |
Jet Grouting works for HKBCF to Airport Tunnel East
(Cut & Cover Tunnel) |
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 |
Canopy Pipe Drilling/ Mined Tunnel Excavation/
Box Jacking underneath Airport Road and Airport Express Line |
Kwo Lo Wan Road |
Excavation and Lateral Support Works at shaft 3
extension north shaft |
Airport Road |
Excavation and Lateral Support Works for HKBCF to
Airport Tunnel West (Cut & Cover Tunnel) |
Portion Y |
Utility Culvert Excavation |
Portion Y |
Sub-structure
& superstructure works for Highway Operation and Maintenance Area
Building |
West Portal |
Excavation for Scenic Hill Tunnel |
West Portal |
Superstructure works for Scenic Hill Tunnel West Portal
Ventilation building |
Environmental Site Inspection and Audit