TABLE OF CONTENTS
1.4 Summary of Construction Works
1.5 Summary of EM&A Programme Requirements
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
4.3 Monitoring Parameters, Frequency and Duration
4.6 Monitoring Schedule for the Reporting Month
5.3 Monitoring
Frequency and Conditions
5.4 Monitoring
Methodology and Location
5.6 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 Prosecutions
7.1 Construction
Programme for the Coming Months
7.2 Key
Issues for the Coming Month
7.3 Monitoring
Schedule for the Coming Month
8 ConclusionS AND RECOMMENDATIONS
List of Tables
Table 1.1 Contact Information of Key Personnel
Table 2.1 Air Quality
Monitoring Equipment
Table 2.2 Locations of Impact Air
Quality Monitoring Stations
Table 2.3 Air Quality
Monitoring Parameters, Frequency and Duration
Table 2.4 Summary of 1-hour TSP
Monitoring Results in the Reporting Period
Table 2.5 Summary of 24-hour
TSP Monitoring Results in the Reporting Period
Table 3.1 Noise Monitoring
Equipment
Table 3.2 Locations of Impact
Noise Monitoring Stations
Table 3.3 Noise Monitoring
Parameters, Frequency and Duration
Table 3.4 Summary of
Construction Noise Monitoring Results in the Reporting Period
Table 4.1 Water Quality
Monitoring Equipment
Table 4.2 Impact Water Quality
Monitoring Parameters and Frequency
Table 4.3 Impact Water Quality
Monitoring Stations
Table 4.4 Laboratory Analysis
for Suspended Solids
Table 5.1 Dolphin Monitoring
Equipment
Table 5.2 Impact Dolphin Monitoring
Line Transect Co-ordinates (Provided by AFCD)
Table 5.3 Impact Dolphin
Monitoring Survey Effort Summary
Table 5.4 Impact Dolphin
Monitoring Survey Details in January 2013
Table 6.1 Summary of Environmental Licensing and Permit Status
Figures
Figure 1 General
Project Layout Plan
Figure
2 Impact
Air Quality and Noise Monitoring Stations and Wind Station
Figure
3 Impact
Water Quality Monitoring Stations
Figure
4 Impact
Dolphin Monitoring Line Transect Layout Map
Figure
5 Impact
Dolphin Monitoring Survey Efforts and Sightings in January 2013
Figure 6 Environmental
Complaint Handling Procedure
List of Appendices
Appendix
A Project
Organization for Environmental Works
Appendix B Three Month
Rolling Construction Programmes
Appendix C Implementation Schedule of
Environmental Mitigation Measures (EMIS)
Appendix
D Summary of
Action and Limit Levels
Appendix E Calibration
Certificates of Monitoring Equipments
Appendix F EM&A
Monitoring Schedules
Appendix
G Impact Air
Quality Monitoring Results and their Graphical Presentation
Appendix H Meteorological Data for
Monitoring Periods on Monitoring Dates in January 2012
Appendix
I Impact
Construction Noise Monitoring Results and their Graphical Presentation
Appendix J Impact Water Quality Monitoring Results and their Graphical Presentation
Appendix
K Impact
Dolphin Monitoring Survey Sighting Summary
Appendix M Monthly Summary
of Waste Flow Table
This report documents the findings of EM&A works conducted in the period between 1 and 31 January 2012. As informed by the Contractor, major activities in the reporting period were:-
Marine-based Works
-
Laying
geo-textile
-
Maintenance
of silt curtain
-
Stone
column installation
-
Cellular
structure installation
-
Band
drain installation
Land-based Works
-
Maintenance
works of Site Office at Works Area WA2
-
Maintenance
works of Public Works Regional Laboratory at Works Area WA3
-
Sign
board erection at Works Area WA2
-
Geo-textile
fabrication at Works Area WA2
-
Stone
column installation barges setup and their maintenance works at Works Area WA4
-
Silt
curtain fabrication at Works Area WA4
A summary of monitoring and audit activities
conducted in the reporting period is listed below:
24-hour Total Suspended Particulates (TSP)
monitoring 1-hour TSP monitoring |
5 sessions 5
sessions |
Noise monitoring |
5
sessions |
Impact water quality monitoring |
13 sessions |
Impact dolphin monitoring |
2 surveys |
Joint Environmental site inspection |
5 sessions |
Breaches of Action and Limit Levels for Air
Quality
No Action/Limit Level exceedance of 1-hour TSP and 24-hour TSP results was recorded in the reporting month.
Breaches of Action and Limit Levels for
Noise
No Action/Limit Level exceedance of construction noise was recorded in the
reporting month.
Breaches of Action and Limit Levels for
Water Quality
Six (6) Action Level exceedances were recorded at measured suspended solids (SS) values (in mg/L) in the reporting month. Investigation result show that the exceedances were not due to the Project works.
Impact Dolphin Monitoring
Complaint, Notification of Summons and
Successful Prosecution
As
informed by EPD on 18 January
13. One complaint was received on 18 January 13. No notification of summons and
successful prosecution was received in the reporting month.
Reporting Change
There was no reporting change required in
the reporting period.
Future Key Issues
Key issues to be considered in the coming
month included:-
-
Site
runoff should be properly collected and treated prior to discharge;
-
Minimize
loss of sediment from filling works;
-
Regular
review and maintenance of silt curtain systems, drainage systems and desilting
facilities;
-
Exposed
surfaces/soil stockpiles should be properly treated to avoid generation of
silty surface run-off during rainstorm;
-
Regular
review and maintenance of wheel washing facilities provided at all site
entrances/exits;
-
Conduct
regular inspection of various working machineries and vessels within works
areas to avoid any dark smoke emission;
-
Suppress
dust generated from work processes with use of bagged cements, earth movements,
excavation activities, exposed surfaces/soil stockpiles and haul road traffic;
-
Quieter
powered mechanical equipment should be used;
-
Provision
of proper and effective noise control measures for operating equipment and
machinery on-site, such as erection of movable noise barriers or enclosure for
noisy plants;
-
Closely
check and replace the sound insulation materials regularly;
-
Better scheduling
of construction works to minimize noise nuisance;
-
Properly
store and label oil drums and chemical containers placed on site;
-
Proper
chemicals, chemical wastes and wastes management;
-
Maintenance
works should be carried out within roofed, paved and confined areas;
-
Collection
and segregation of construction waste and general refuse on land and in the sea
should be carried out properly and regularly; and
-
Proper
protection and regular inspection of existing trees, transplanted/retained
trees.
Table
1.1 Contact
Information of Key Personnel
Party |
Position |
Name |
Telephone |
Fax |
Engineerˇ¦s Representative (ER) (Ove Arup
& Partners Hong Kong Limited) |
Chief Resident Engineer |
Michael Lo |
2528 3031 |
2668 3970 |
IEC / ENPO (ENVIRON Hong Kong Limited) |
Independent Environmental Checker |
Raymond Dai |
3743 0788 |
3548 6988 |
Environmental Project Office Leader |
Y. H. Hui |
3743 0788 |
3548 6988 |
|
Contractor
(China Harbour Engineering Company
Limited) |
General Manager (S&E) |
Daniel Leung |
3157 1086 |
2578 0413 |
Environmental Officer |
C. M. Wong |
3157 1086 |
2578 0413 |
|
24-hour Hotline |
Alan C.C. Yeung |
9448 0325 |
-- |
|
ET (AECOM Asia
Company Limited) |
ET Leader |
Echo Leong |
3922 9280 |
2317 7609 |
Marine-based Works
-
Laying
geo-textile
-
Maintenance
of silt curtain
-
Stone
column installation
-
Cellular
structure installation
-
Band
drain installation
Land-based Works
-
Maintenance
works of Site Office at Works Area WA2
-
Maintenance
works of Public Works Regional Laboratory at Works Area
WA3
-
Sign
board erection at Works Area WA2
-
Geo-textile
fabrication at Works Area WA2
-
Stone
column installation barges setup and their maintenance works at Works Area WA4
-
Silt
curtain fabrication at Works Area WA4
-
All monitoring parameters;
-
Monitoring schedules for the reporting month
and forthcoming month;
-
Action and Limit levels for all environmental
parameters;
-
Event / Action Plan;
-
Environmental mitigation measures, as
recommended in the Project EIA reports; and
-
Environmental requirement in contract
documents.
Table
2.1 Air Quality
Monitoring Equipment
Equipment |
Brand and
Model |
Portable direct
reading dust meter (1-hour TSP) |
Sibata Digital
Dust Monitor (Model No. LD-3 and LD-3B) |
High Volume
Sampler |
Tisch
Environmental Mass Flow Controlled Total Suspended Particulate (TSP) High
Volume Air Sampler (Model No.
TE-5170) |
Table 2.2 Locations
of Impact Air Quality Monitoring Stations
Monitoring Station |
Location |
Description |
AMS2 |
Tung Chung Development
Pier |
Rooftop of the premise |
AMS3A |
Site Boundary
of Site Office Area at Works
Area WA2 |
On ground at the area boundary |
AMS6* |
Dragonair/CNAC (Group) Building |
On ground at boundary of the premise |
AMS7 |
Hong Kong
SkyCity Marriott Hotel |
On ground at boundary of the premise |
#Remarks: Reference is made
to EPD conditional approval of the omission of air monitoring station (AMS 6)
for the project. The omission will be effective on 19 November 2012.
Table 2.3 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)
No two samplers should be placed less than 2
meters apart.
(iii)
The distance between the HVS and any obstacles,
such as buildings, was at least twice the height that the obstacle protrudes above
the HVS.
(iv)
A minimum of 2 meters separation from walls,
parapets and penthouse for rooftop sampler.
(v)
A minimum of 2 meters separation from any
supporting structure, measured horizontally is required.
(vi)
No furnace or incinerator flues nearby.
(vii)
Airflow around the sampler was unrestricted.
(viii)
Permission was obtained to set up the samplers and
access to the monitoring stations.
(ix)
A secured supply of electricity was obtained to
operate the samplers.
(x)
The sampler was located more than 20 meters from
any dripline.
(xi)
Any wire fence and gate, required to protect the
sampler, did not obstruct the monitoring process.
(xii)
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 aluminum 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 (i.e. 0.6-1.7 m3/min).
(x)
The programmable digital timer was set for a
sampling period of 24 hrs, 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 E.
(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 continuous particulate TEOM Monitor, Series 1400ab.
Calibration certificates of the Laser Dust Monitors are provided in Appendix E.
(ii)
1-hour validation checking of the TSP meter against
HVS is carried out on half-year
basis
at the air quality monitoring locations.
Table 2.4 Summary
of 1-hour TSP Monitoring Results in the Reporting Period
|
Average (mg/m3) |
Range (mg/m3) |
Action Level (mg/m3) |
Limit Level (mg/m3) |
AMS2 |
85 |
80 ˇV 92 |
374 |
500 |
AMS3A |
87 |
81 ˇV 96 |
368 |
500 |
AMS7 |
85 |
81 - 89 |
370 |
500 |
Table 2.5 Summary
of 24-hour TSP Monitoring Results in the Reporting Period
|
Average (mg/m3) |
Range (mg/m3) |
Action Level (mg/m3) |
Limit Level (mg/m3) |
AMS2 |
98 |
74 - 138 |
176 |
260 |
AMS3A |
127 |
89 - 163 |
167 |
260 |
AMS7 |
124 |
98 - 154 |
183 |
260 |
Table 3.1 Noise
Monitoring Equipment
Equipment |
Brand and Model |
Integrated Sound Level Meter |
Rion NL-31 |
Acoustic Calibrator |
Rion NC-73 |
Remarks: Monitoring
Table
3.2 Locations
of Impact Noise Monitoring Stations
Monitoring Station |
Location |
Description |
NMS2 |
Seaview Crescent Tower 1 |
Free-field on
the rooftop of the premise |
NMS3A |
Site Boundary of Site Office Area at Works Area WA2 |
Free-field on ground at the area boundary.
|
Table 3.3 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)
All measurement at NMS3A
were free
field measurements in the reporting month at NMS3A. A correction of
+3 dB(A) shall be made to the free field measurements.
(c)
The battery condition was checked to ensure the
correct functioning of the meter.
(d)
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.
(e)
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.
(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 E.
Table
3.4 Summary
of Construction Noise Monitoring Results in the Reporting Period
|
Average, dB(A), Leq
(30 mins) |
Range, dB(A), Leq
(30 mins) |
Limit Level, dB(A), Leq
(30 mins) |
NMS2 |
66* |
64
ˇV 68* |
75 |
NMS3A |
65* |
63
ˇV 66* |
70^ |
*+3dB(A) Façade correction included
^
Daytime noise Limit Level of 70 dB(A) applies to education institutions
Table 4.1 Water
Quality Monitoring Equipment
Equipment |
Brand and
Model |
Dissolved Oxygen
(DO) and Temperature Meter, Salinity Meter and Turbidimeter |
YSI Model 6820 |
pH Meter |
YSI Model 6820 or
Thermo Orion 230A+ |
Positioning
Equipment |
JRC DGPS 224
Model JLR-4341 with J-NAV 500 Model NWZ4551 |
Water Depth
Detector |
Eagle Cuda-168 |
Water Sampler |
Kahlsio Water
Sampler (Vertical) 2.2 L with messenger |
Table 4.2 Impact
Water Quality Monitoring Parameters and Frequency
Monitoring Stations |
Parameter, unit |
Frequency |
No. of depth |
Impact Stations: IS5, IS(Mf)6, IS7, IS8, IS(Mf)9, IS10, IS(Mf)11, IS(Mf)16, IS17 Control/Far Field Stations: CS(Mf)3, CS(Mf)5, CS4, CS6, CSA Sensitive Receiver Stations: SR3-SR7, SR10A&SR10B |
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
4.3 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 |
Impact Station (Close to HKBCF construction site) |
812577 |
820670 |
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 |
Sensitive receivers (Artificial Reef in NE Airport) |
811489 |
820455 |
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 |
Control Station |
809989 |
821117 |
|
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 (i.e. Model YSI 6820 CE-C-M-Y) and pH meter (i.e. Thermo Orion 230A+) respectively.
(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. 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 4.4.
Table
4.4 Laboratory
Analysis for Suspended Solids
Parameters |
Instrumentation |
Analytical Method |
Reporting Limit |
Detection Limit |
Suspended
Solid (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 E.
(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 4.5 Summary
of Water Quality Exceedances
Exceedance Level |
DO (S&M) |
DO (Bottom) |
Turbidity |
SS |
Total |
||||||
Ebb |
Flood |
Ebb |
Flood |
Ebb |
Flood |
Ebb |
Flood |
Ebb |
Flood |
||
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
IS(Mf)6 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
IS7 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
IS8 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
IS(Mf)9 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
IS10 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 (2 Jan, 13) |
0 |
1 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
IS(Mf)11 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
IS(Mf)16 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 (4 Jan, 13) |
0 |
1 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
IS17 |
Action |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
SR3 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
SR4(N) |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
SR5 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 (11 & 30 Jan, 13) |
0 |
2 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
SR6 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 (2 and 14 Jan, 13) |
0 |
2 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
SR7 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
SR10A |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
SR10B (N) |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
Total |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
6 (2, 3, 11, 14 and 30 Jan 13) |
|
|
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Note: S: Surface;
and
M:
Mid-depth.
4.7.6.1 For Action
Level Exceedance of SS at IS(Mf)6 at Mid-Flood tide recorded on 14 Jan 2013 at
monitoring station SR6 during mid-flood tide, s tone column installation was
carried out throughout the day at Portion D by FTB 16, FTB20, AP1 and AP2, at
Portion A by FTB19 and AP3, at Portion C2A by FTB17 and Portion C2c by FTB18.
4.7.6.2 Impact
Stations IS10, IS(Mf)11, SR5 and CS(Mf)3 which are considered downstream and
closer to active works than Monitoring Station SR6. Since the Suspended Solids
values recorded at IS10, IS(Mf)11, SR5 and CS(Mf)3 are all below the Action and
Limit Level during same tide on the same day. The water quality noted at
downstream of and closer to active works were not adversely affected by active
works. Hence it is considered that the exceedance recorded at SR6 is not
related to the Project.
4.7.6.3 Same type
of works was carried out at almost the same location on 11 and 16 January13 but
Suspended Solids values recorded at SR6 on 11 and 16 January 13 are all below
the Action and Limit Level during the same tide on the same day.
4.7.6.4 The
exceedance was likely due to local effects in the vicinity of SR6.
4.7.6.5 The exceedance was considered as Non-Project
Related.
4.7.7.1 For Action
Level Exceedance of SS recorded at Mid-Flood tide on 30 Jan 2013 at monitoring
station SR5, Stone column installation was carried out throughout the day at
Portion D by FTB 16, AP1 and AP2, at Portion A by FTB 18, FTB19, FTB20, AP3 and
AP4, at Portion C2A by FTB17.
4.7.7.2 Impact
Stations IS10 and IS(Mf)11 which are considered downstream and closer to the
works than Impact Station SR5. Since the Suspended Solids values recorded at
IS10 and IS(Mf)11 are all below the Action and Limit Level during same tide on
the same day. The water quality noted at downstream of and closer to active
works were not adversely affected by active works. Hence it is considered that
the exceedance recorded at SR5 is not related to the Project.
4.7.7.3 Same type
of works was carried out at almost the same location on 28 Jan13 and 01 Feb13
but Suspended Solids values recorded at SR5 on 28 Jan13 and 01 Feb13 are all
below the Action and Limit Level during the same tide on the same day.
4.7.7.4 The
exceedance was likely due to local effects in the vicinity of SR5.
4.7.7.5 The exceedance was considered as Non-Project
Related.
4.7.7.6 The floating type silt curtains were provided
around the whole works area. However, integrity checking record of 30 Jan 13
shows that defects were found at parts of the floating type silt curtains. The
Contractor was reminded to swiftly rectify the perimeter silt curtain in
particular the portions which defects were observed to ensure the sediment
plume generated by construction activities could be prevented from discharging to
areas outside the site boundary.
4.7.7.7 As informed by the Contractor, maintenance
work of the silt curtain was carried out on a daily basis except Sunday.
Table 5.1 Dolphin
Monitoring Equipment
Equipment |
Model |
Commercially licensed motor vessel |
15m in length
with a 4.5m viewing platform |
Global
Positioning System (GPS) x2 |
Garmin 18X-PC Geo One Phottix |
Computers
(Corei7) x2 |
Windows /MSO 10 Logger |
AIS receiver |
Logger ˇV GPS
linked |
Camera |
Nikon D90 300m 2.8D fixed focus Nikon D90 20-300m zoom lens |
Laser Rangefinder
|
Infinitor
LRF1000/Visionking 900 |
Marine Binocular
x3 |
Nexus 7 x 50 marine binocular with
compass and reticules Fujinon 7 x 50 marine binocular with
compass and reticules |
Table 5.2 Impact
Dolphin Monitoring Line Transect Co-ordinates (Provided by AFCD)
|
HK
Grid System |
Long
Lat in WGS84 |
||
ID |
X |
Y |
Long |
Lat |
1 |
804671 |
814577 |
113.870308 |
22.269741 |
1 |
804671 |
831404 |
113.869975 |
22.421696 |
2 |
805475 |
815457 |
113.878087 |
22.277704 |
2 |
805477 |
826654 |
113.877896 |
22.378814 |
3 |
806464 |
819435 |
113.887615 |
22.313643 |
3 |
806464 |
822911 |
113.887550 |
22.345030 |
4 |
807518 |
819771 |
113.897833 |
22.316697 |
4 |
807518 |
829230 |
113.897663 |
22.402113 |
5 |
808504 |
820220 |
113.907397 |
22.320761 |
5 |
808504 |
828602 |
113.907252 |
22.396462 |
6 |
809490 |
820466 |
113.916965 |
22.323003 |
6 |
809490 |
825352 |
113.916884 |
22.367128 |
7 |
810499 |
820690 |
113.926752 |
22.325043 |
7 |
810499 |
824613 |
113.926688 |
22.360464 |
8 |
811508 |
820847 |
113.936539 |
22.326475 |
8 |
811508 |
824254 |
113.936486 |
22.357241 |
9 |
812516 |
820892 |
113.946329 |
22.326894 |
9 |
812516 |
824254 |
113.946279 |
22.357255 |
10* |
813525 |
818270 |
113.956156 |
22.303225 |
10* |
813525 |
824657 |
113.956065 |
22.360912 |
11 |
814556 |
818449 |
113.966160 |
22.304858 |
11 |
814556 |
820992 |
113.966125 |
22.327820 |
12 |
815542 |
818807 |
113.975726 |
22.308109 |
12 |
815542 |
824882 |
113.975647 |
22.362962 |
13 |
816506 |
819480 |
113.985072 |
22.314192 |
13 |
816506 |
824859 |
113.985005 |
22.362771 |
14 |
817537 |
820220 |
113.995070 |
22.320883 |
14 |
817537 |
824613 |
113.995018 |
22.360556 |
15 |
818568 |
820735 |
114.005071 |
22.325550 |
15 |
818568 |
824433 |
114.005030 |
22.358947 |
16 |
819532 |
821420 |
114.014420 |
22.331747 |
16 |
819532 |
824209 |
114.014390 |
22.356933 |
17 |
820451 |
822125 |
114.023333 |
22.338117 |
17 |
820451 |
823671 |
114.023317 |
22.352084 |
18 |
821504 |
822371 |
114.033556 |
22.340353 |
18 |
821504 |
823761 |
114.033544 |
22.352903 |
19 |
822513 |
823268 |
114.043340 |
22.348458 |
19 |
822513 |
824321 |
114.043331 |
22.357971 |
20 |
823477 |
823402 |
114.052695 |
22.349680 |
20 |
823477 |
824613 |
114.052686 |
22.360610 |
21 |
805476 |
827081 |
113.877878 |
22.382668 |
21 |
805476 |
830562 |
113.877811 |
22.414103 |
22 |
806464 |
824033 |
113.887520 |
22.355164 |
22 |
806464 |
829598 |
113.887416 |
22.405423 |
23 |
814559 |
821739 |
113.966142 |
22.334574 |
23 |
814559 |
824768 |
113.966101 |
22.361920 |
Table 5.3 Impact
Dolphin Monitoring Survey Effort Summary
Survey |
Date |
Status |
Sea
State (on
effort only) |
Distance
(km) |
1 |
08-01-13 |
ON |
1 |
7.4 |
08-01-13 |
ON |
2 |
49.1 |
|
08-01-13 |
ON |
3 |
14.1 |
|
Total |
70.6 |
|||
09-01-13 |
ON |
1 |
1.9 |
|
09-01-13 |
ON |
2 |
38.7 |
|
Total |
40.6 |
|||
2 |
28-01-13 |
ON |
1 |
16.9 |
28-01-13 |
ON |
2 |
46.5 |
|
Total |
63.4 |
|||
29-01-13 |
ON |
1 |
47.6 |
|
Total |
47.6 |
|||
TOTAL
January 2013 |
222.2 |
*Remark: Surveys conduct under Beaufort Sea State 3 or below are
considered as under favourable condition.
Table 5.4 Impact
Dolphin Monitoring Survey Details in January 2013
Date |
Location
(transect line) |
No. Sightings ˇ§ON EFFORTˇ¨ |
No. Sightings
ˇ§OPPORTUNISTICˇ¨ |
08-01-13 |
NW Lantau
(1-8,21,22) |
3 |
0 |
09-01-13 |
NW & NE
Lantau (9-20,23) |
1 |
0 |
28-01-13 |
NW Lantau (1-6) |
8 |
3 |
29-01-13 |
NW & NE
Lantau (7-9,10-20,23) |
0 |
0 |
Total in January 2013 |
12 |
3 |
Air Quality
Noise
Water Quality
Chemical and Waste Management
Waste
Landscape and Visual Impact
Others
Table 6.1 Summary of Environmental Licensing and Permit Status
Statutory Reference |
License/ Permit |
License or Permit No. |
Valid Period |
License/ Permit Holder |
Remarks |
|
From |
To |
|||||
EIAO |
Environmental
Permit |
EP-353/2009/E |
16/10/2012 |
N/A |
HyD |
Hong Kong ˇV Zhuhai
ˇV Macao Bridge Hong Kong Boundary Crossing Facilities |
EP-354/2009/A |
08/12/2010 |
N/A |
Tuen Mun ˇV Chek
Lap Kok Link (TMCLKL Southern Landfall
Reclamation only) |
|||
APCO |
NA notification |
-- |
30/12/2011 |
-- |
CHEC |
Works Area WA2 and
WA3 |
APCO |
NA notification |
-- |
17/01/2012 |
-- |
CHEC |
Works Area WA4 |
WDO |
Chemical Waste
Producer Registration |
5213-951-C1186-21 |
30/3/2012 |
N/A |
CHEC |
Chemical waste produced
in Contract HY/2010/02 |
WDO |
Chemical Waste
Producer Registration |
5213-974-C3750-01 |
31/10/2012 |
-- |
CHEC |
Registration as
Chemical Waste Producer at To Kau Wan(WA4) |
WDO |
Chemical Waste
Producer Registration |
5213-839-C3750-02 |
13/09/2012 |
-- |
CHEC |
Registration as
Chemical Waste Producer at TKO 137(FB) |
WDO |
Billing
Account for Disposal of Construction Waste |
7014181 |
05/12/2011 |
N/A |
CHEC |
Waste disposal in
Contract HY/2010/02 |
NCO |
Construction
Noise Permit |
GW-RS1111-12 |
01/11/2012 |
30/04/2013 |
CHEC |
Works Area WA3 in Siu Ho Wan |
NCO |
Construction Noise
Permit |
GW-RS0861-12 |
24/8/2012 |
23/2/2013 |
CHEC |
Works Area WA2 in
Tung Chung |
NCO |
Construction Noise
Permit |
GW-RS1360-12 |
21/12/2012 |
20/6/2013 (Renewal application in process) |
CHEC |
Marine-based areas
in Contract HY/2010/02 |
NCO |
Construction Noise
Permit |
N/A |
Application in
process |
N/A |
CHEC |
Works
Area WA 4 in
Contract HY/2010/02 |
l Defect of
localised silt curtain was observed during the Site Inspection Audit conducted
on barge FTB-18 on 10 Jan 13. According to the photo record provided by the
Contractor, these defect
was rectified by the Contractor before the Site Inspection Audit conducted on 24 Jan 13.
l During the joint
site inspection with the representatives of the Contractor and Residential Engineer
on 31 Jan 13, it was noticed that a localised silt curtain was readily adjacent
to Barge AP4 but was not deployed to enclose the active stone column
installation at Portion A. However the Contractor rectified the situation by
providing the localised silt curtain to the active stone column installation on
the same day.
l Defects were
noticed at parts of the perimeter silt curtain at portions E1 and C2c. The
Contractor was reminded to swiftly rectify the perimeter silt curtain in particular
the portions where defects were observed to ensure the sediment plume generated
by construction activities could be prevented from discharging to areas outside
the site boundary.
l The Contractor
was reminded to carry out regular
inspection of the deployed silt
curtains to review the
integrity and effectiveness of the perimeter silt curtains deployed at the
boundary of HKBCF and the localised silt curtain deployed during
active stone column installation.
l
The
Contractor was reminded to swiftly rectify the perimeter silt curtain in particular the portions which defects were
observed to ensure the sediment
plume generated by construction activities could
be prevented from discharging to areas outside the site boundary.
l The Contractor
was reminded to reinforce the provision of localised silt curtain to all stone
column vessels to ensure the sediment plume generated by construction
activities could be prevented from discharging to areas outside the site
boundary.
Marine-based Works
-
Marine-base
-
Cellular
structure installation
-
Laying
geo-textile
-
Sand
blanket trial
-
Maintenance
of Silt curtain
-
Stone
column installation
-
Band
drain installation
-
Backfill
cellular structure
-
Stone
blanket laying
Land-based Works
-
Maintenance
works of Site Office at Works Area WA2
-
Maintenance
works of Public Works Regional Laboratory at Works Area WA3
-
Geo-textile
fabrication at Works Area WA2
-
Stone
column installation barges setup and their maintenance works at Works Area WA4
-
Silt
curtain fabrication at Works Area WA4
- Site runoff should be
properly collected and treated prior to discharge;
- Minimize loss of sediment
from filling works;
- Regular review and
maintenance of silt curtain systems, drainage systems and desilting facilities;
- Exposed surfaces/soil stockpiles
should be properly treated to avoid generation of silty surface run-off during
rainstorm;
- Regular review and
maintenance of wheel washing facilities provided at all site entrances/exits;
- Conduct regular inspection
of various working machineries and vessels within works areas to avoid any dark
smoke emission;
- Suppress dust generated
from work processes with use of bagged cements, earth movements, excavation
activities, exposed surfaces/soil stockpiles and haul road traffic;
- Quieter powered mechanical
equipment should be used;
- Provision of proper and
effective noise control measures for operating equipment and machinery on-site,
such as erection of movable noise barriers or enclosure for noisy plants;
- Closely check and replace
the sound insulation materials regularly;
- Better scheduling of
construction works to minimize noise nuisance;
- Properly store and label
oil drums and chemical containers placed on site;
- Proper chemicals, chemical
wastes and wastes management;
- Maintenance works should be
carried out within roofed, paved and confined areas;
- Collection and segregation
of construction waste and general refuse on land and in the sea should be
carried out properly and regularly;
and
- Proper protection and
regular inspection of existing trees, transplanted/retained trees.
Air Quality Impact
l All working
plants and vessels on site should be regularly inspected and properly
maintained to avoid dark smoke emission.
l All vehicles should be washed to remove any
dusty materials before leaving the site.
l Haul roads should be sufficiently dampened
to minimize fugitive dust generation.
l Wheel washing facilities should be properly
maintained and reviewed to ensure properly functioning.
l Temporary exposed slopes and open stockpiles
should be properly covered.
l Enclosure should be erected for cement
debagging, batching and mixing operations.
l Water spraying should be provided to suppress fugitive
dust for any dusty construction activity.
Construction Noise Impact
l Quieter powered
mechanical equipment should be used as far as possible.
l Noisy operations
should be oriented to a direction away from sensitive receivers as far as
possible.
l Proper and
effective noise control measures for operating equipment and machinery on-site
should be provided, such as erection of movable noise barriers or enclosure for
noisy plants. Closely check and replace the sound insulation materials
regularly
l Vessels and
equipment operating should be checked regularly and properly maintained.
l Noise Emission
Label (NEL) shall be affixed to the air compressor and hand-held breaker
operating within works area.
l Better scheduling
of construction works to minimize noise nuisance.
Water Quality Impact
l Regular review
and maintenance of silt curtain systems, drainage systems and desilting
facilities in order to make sure they are functioning effectively.
l Construction of
seawall should be completed as early as possible.
l Regular inspect
and review the loading process from barges to avoid splashing of material.
l Silt, debris and
leaves accumulated at public drains, wheel washing bays and perimeter
u-channels and desilting facilities should be cleaned up regularly.
l Silty effluent
should be treated/ desilted before discharged. Untreated effluent should be
prevented from entering public drain channel.
l Proper drainage
channels/bunds should be provided at the site boundaries to collect/intercept
the surface run-off from works areas.
l Exposed slopes
and stockpiles should be covered up properly during rainstorm.
Chemical and Waste Management
l All types of
wastes, both on land and floating in the sea, should be collected and sorted
properly and disposed of timely and properly. They should be properly stored in
designated areas within works areas temporarily.
l All chemical
containers, batteries and oil drums should be properly stored and labelled.
l All plants and
vehicles on site should be properly maintained to prevent oil leakage. Proper measures, like drip trays and/or bundings, should be provided for
retaining leaked oil/chemical from plants.
l All kinds of
maintenance works should be carried out within roofed, paved and confined
areas.
l All drain holes
of the drip trays utilized within works areas should be properly plugged to
avoid any oil and chemical waste leakage.
l Oil stains on
soil surface, accumulated oil mixture and empty chemical containers should be
cleared and disposed of as chemical waste.
l Regular review should be conducted for working barges and patrol boats
to ensure sufficient measures and spill control kits were provided on working
barges and patrol boats to avoid any spreading of leaked oil/chemicals.
Landscape and Visual Impact
l All existing,
retained/transplanted trees at the works areas should be properly fenced off
and regularly inspected.