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
5.4 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 4.5 Summary of Water Quality Exceedances
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 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
Tracks and Sightings
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 the Reporting Month
Appendix I Impact Daytime 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
Sightings
Appendix
M Monthly Summary of Waste Flow Table
This report documents the findings of EM&A works
conducted in the period between 1 and 30 April 2012. As informed by the Contractor, major
activities in the reporting period were:-
Marine-based Works
-
Cone
penetration test;
-
Geotextile
laying and fabrication;
-
Stone
column installation trial;
-
Silt
curtain fabrication and deployment;
-
Stone
blankets laying; and
-
Trial
of cellular structure (at Hu Men of Mainland).
Land-based Works
-
Site office erection and construction at Works
Area WA2;
-
Public Works Regional Laboratory erection and
construction at Works Area WA3;
-
Constructing site access at area WA2 to
Ying Hei Road, Tung Chung;
-
Access works construction; and
-
Drainage works.
A summary of monitoring and audit activities conducted in the reporting
period is listed below:
24-hour TSP monitoring 1-hour TSP
monitoring |
6 sessions 6 sessions |
Day, evening and night time noise monitoring |
5 sessions |
Impact water quality monitoring |
13 sessions |
Impact dolphin monitoring |
2 sessions |
Joint Environmental site inspection |
4 sessions |
Breaches of Action
and Limit Levels for Air Quality
No exceedance of Action and Limit Level was recorded for 1-hour and
24-hour TSP monitoring 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
Five (5)
Action Level exceedances, where two (2) were recorded at measured turbidity
level and three (3) were recorded at measured SS level, were recorded in the
reporting month. Investigation results show that the exceedances were not due
to the Project works. Nevertheless, the Contractor was reminded to ensure
provision of ongoing maintenance to the silt curtains.
Impact Dolphin Monitoring
A total of two
dolphin sightings were recorded during the two surveys, two on 19th April 2012
and none on 23rd April 2012. Of the two
sightings, one was “on effort” and one was “opportunistic”. The predominant
behavior of the dolphin observed was feeding behind a stationary hang trawler
at the time of the sighting. There is no indication that construction
activities from the Project have caused disturbance or direct damage to the
marine mammals which were observed.
No other
active construction sites were noted during the two survey periods within Hong
Kong waters. Marine construction work
was noted close to the Hong Kong–China maritime border in Chinese waters and
dolphins were observed in this area (near Tai O).
Complaint, Notification of
Summons and Successful Prosecution
No complaint was followed up by Environmental Team in the reporting month.
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 |
Engineer’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 |
David Yeung |
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 |
|
ET (AECOM Asia
Company Limited) |
ET Leader |
Echo Leong |
3922 9280 |
2371 7609 |
Marine-based Works
-
Cone
penetration test;
-
Geotextile
laying and fabrication;
-
Stone
column installation trial;
-
Silt curtain
fabrication and deployment;
-
Stone
blankets laying; and
-
Trial
of cellular structure (at Hu Men of Mainland).
Land-based Works
-
Site
office erection and construction at Works Area WA2;
-
Public
Works Regional Laboratory erection and construction at Works Area WA3;
-
Constructing
site access at area WA2 to Ying Hei Road, Tung Chung;
-
Access
works construction; and
-
Drainage
works.
-
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 |
AMS7 |
Hong Kong SkyCity Marriott Hotel |
On ground at boundary of the premise |
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)
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.
(iv)
A
minimum of 2 meters separation from any supporting structure, measured
horizontally is required.
(v)
No furnace or incinerator flues nearby.
(vi)
Airflow around the sampler was unrestricted.
(vii)
Permission was obtained to set up the samplers and
access to the monitoring stations.
(viii)
A secured supply of electricity was obtained to
operate the samplers.
(ix)
The sampler was located more than 20 meters from
any dripline.
(x)
Any wire fence and gate, required to protect the
sampler, did not obstruct the monitoring process.
(xi)
Flow control accuracy was kept within ±2.5%
deviation over 24-hour sampling period.
(b)
Preparation of Filter Papers
(i)
Glass fibre filters, G810 were labelled and sufficient
filters that were clean and without pinholes were selected.
(ii)
All filters were equilibrated in the conditioning
environment for 24 hours before weighing. The conditioning environment
temperature was around
(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 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 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 |
75.6 |
67.6 – 83.8 |
374 |
500 |
AMS3A |
78.6 |
70.3 – 84.9 |
368 |
500 |
AMS7 |
74.3 |
64.4 – 80.7 |
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 |
42.3 |
18.9 – 77.4 |
176 |
260 |
AMS3A
* |
47.4 |
24.1 – 105.6 |
167 |
260 |
AMS7 |
52.2 |
17.3 – 97.1 |
183 |
260 |
Remarks: *Due to power supply to HVS at AMS3A during the scheduled
24-hour impact monitorings, the measured TSP levels were less/more than 24-hour
sampling period and they are presented herewith as for reference.
Table 3.1 Noise
Monitoring Equipment
Equipment |
Brand and Model |
Integrated Sound Level Meter |
B&K 2238 Rion NL-31 |
Acoustic Calibrator |
Rion NC-73 |
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 |
1m from the exterior façade of the container office 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)
Façade measurements were made at NMS3A.
(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 – 1900 on normal weekdays; Leq(5-minutes)
during restricted hours i.e. 19:00
– 23:00 and 23:00 – 07:00 of normal weekdays, whole day of Sundays and Public
Holidays.
(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 |
64.5* |
63.1 – 66.3* |
75 |
NMS3A |
64.1 |
63.3 – 64.5 |
75 |
*+3dB(A) Façade correction included
Table 4.1 Water
Quality Monitoring Equipment
Equipment |
Brand and Model |
DO and Temperature Meter, Salinity Meter, Turbidimeter and pH Meter |
YSI Model 6820 V2 |
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 |
·
Depth, m ·
Temperature, oC ·
Salinity,
ppt ·
DO, mg/L ·
DO Saturation, % ·
Turbidity, NTU ·
pH ·
Suspended Solids (SS), mg/L |
Three times per week during mid-ebb and
mid-flood tides (within ± 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 and turbidity, pH were measured by
multi-parameter meters (i.e. Model YSI 6820 CE-C-M-Y).
(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 accrediated 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 once per monitoring day 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 |
1 |
0 |
1 |
0 |
2 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
IS7 |
Action |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
2 |
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 |
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 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
IS17 |
Action |
0 |
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 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
SR6 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
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 |
2 |
0 |
3 |
5 |
|
|
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Note: S: Surface;
M: Mid-depth;
Moreover, only stone blanket laying, which is not likely to cause water quality impact, was carrying out during the monitoring period at mid-flood tide on 23 April 2012. Cone penetration test and stone column trial were suspended at 17:00 and 14:00 respectively on 23 April 2012. Strong wind and rough sea condition was experienced during the monitoring period, which is likely to affect the ambient water quality in such shallow water condition. No silty plume was observed near area between the perimeter of the silt curtain and the monitoring point during the monitoring. Turbidity and SS levels recorded at IS(Mf)6 and IS7 on the previous monitoring date (i.e. 18 April 2012) during mid-flood tide, when there are same activities at works areas being carried out, were well below the Action and Limit Levels.
Table 5.1 Dolphin Monitoring Equipment
Equipment |
Model |
Vessel for
Monitoring |
15m in length with
viewing platform 4.5m above water level |
Global
Positioning System (GPS) x2 |
Garmin 18X-PC Geo One Phottix |
Computers
(Corei7) x2 |
Windows /MSO 2010 Logger PamGuard |
AIS Receiver |
LOGGER-GPS linked |
Camera |
Nikon D90 300m
2.8D fixed focus Nikon D90 20-300m zoom lens |
Laser Binoculars |
Infinitor LRF1000 |
Marine Binocular
x2 |
Nexus 7 ´ 50 marine binocular with compass and
reticules |
Acoustic
Monitoring |
Hydrophone array (2 element, 50m cable) |
· Northeast Lantau survey area; and
· Northwest Lantau survey area.
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
Date |
Status |
Sea State (on effort) |
Distance on effort (km) |
Time on effort (hh:mm:ss) |
19-04-2012 |
ON |
0.5 |
0 |
- |
19-04-2012 |
ON |
1 |
0 |
- |
19-04-2012 |
ON |
1.5 |
7.1 |
00:45:41 |
19-04-2012 |
ON |
2 |
2.3 |
00:15:01 |
19-04-2012 |
ON |
2.5 |
9.5 |
00:45:03 |
19-04-2012 |
ON |
3 |
6.5 |
00:23:51 |
19-04-2012 |
ON |
3.5 |
0.3 |
00:06:19 |
23-04-2012 |
ON |
0.5 |
3.3 |
00:14:21 |
23-04-2012 |
ON |
1 |
8 |
00:35:22 |
23-04-2012 |
ON |
1.5 |
5.4 |
00:23:30 |
23-04-2012 |
ON |
2 |
19.5 |
1:26:43 |
23-04-2012 |
ON |
2.5 |
11.3 |
00:47:11 |
23-04-2012 |
ON |
3 |
5.5 |
00:24:01 |
23-04-2012 |
ON |
3.5 |
0.4 |
00:2:30 |
Air Quality
Noise
Water Quality
Chemical and Waste Management
Landscape and Visual Impact
Miscellaneous
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/D |
07/03/2012 |
N/A |
HyD |
Hong Kong – Zhuhai – Macao Bridge
Hong Kong Boundary Crossing Facilities |
EP-354/2009/A |
08/12/2010 |
N/A |
Tuen Mun – 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 |
WPCO |
Discharge License |
N/A |
Application in process |
N/A |
CHEC |
Discharge of Construction
Runoff |
WDO |
Chemical Waste Producer
Registration |
N/A |
Application in process |
N/A |
CHEC |
Chemical waste produced in
Contract HY/2010/02 |
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-RS0125-12 |
28/2/2012 |
27/08/2012 (Cancelled from 1900 on
16/04/2012) |
CHEC |
Marine-based areas in Contract
HY/2010/02 |
Statutory Reference |
License/ Permit |
License or Permit No. |
Valid Period |
License/ Permit Holder |
Remarks |
|
From |
To |
|||||
NCO |
Construction Noise Permit |
GW-RS0392-12 |
16/4/2012 |
15/10/2012 |
CHEC |
Marine-based areas in Contract
HY/2010/02 |
NCO |
Construction Noise Permit |
GW-RS0378-12 |
16/4/2012 |
15/10/2012 |
CHEC |
Works Area WA3 in Siu Ho Wan |
NCO |
Construction Noise Permit |
GW-RS0430-12 |
27/4/2012 |
18/10/2012 |
CHEC |
Works Area WA2 in Tung Chung |
Marine-based Works
-
Cone
penetration test;
-
Geotextile
laying and fabrication;
-
Stone
column installation;
-
Cellular
structure construction
-
Silt curtain
fabrication and deployment; and
-
Stone
blankets laying.
Land-based Works
-
Site
office erection and construction at Works Area WA2;
-
Public
Works Regional Laboratory erection and construction at Works Area WA3;
-
Constructing
site access at area WA2 to Ying Hei Road, Tung Chung; and
-
Drainage
works.
- 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 Provide water
spraying 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 and oil drums should
be properly stored and labelled.
l All plants and vehicles on site should be
properly maintained to prevent oil leakage.
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 and empty
chemical containers should be cleared and disposed of as chemical waste.
Landscape and Visual
Impact
l All existing, retained/transplanted trees at
the works areas should be properly fenced off and regularly inspected.