TABLE OF CONTENTS
Page
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 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, Effort by
Area and Beaufort Sea State
Table 5.4 Impact
Dolphin Monitoring Survey Details September 2014
Table 5.5 The
Encounter Rate of Number of Dolphin Sightings & Total Number of Dolphins
per Area^
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 September 2014
Figure 6 Environmental Complaint Handling
Procedures
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 September
2014
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 30 September 2014. As informed by the Contractor, major activities in
the reporting period were:-
Marine-based Works
-
Cellular structure installation
-
Optimizing rubble mound seawalls
-
Conforming sloping seawalls
-
Laying geo-textile
-
Sand blanket laying
-
Sand filling
-
Rock filling
-
Maintenance of silt curtain & silt screen at sea water intake of
HKIA
-
Band drain installation
-
Backfill cellular structure
-
Geotechnical Instrumentation works
-
Surcharge laying
-
Capping Beams structures
-
Construction of temporary jetties for surcharge laying
-
Temporary Watermain construction
-
Flat barge of unloading public fill for surcharge laying
-
Precast Yard Setup
Land-based Works
-
Maintenance works of Site Office at Works Area WA2
-
Maintenance works of Public Works Regional Laboratory at Works Area
WA3
-
Maintenance of Temporary Marine Access at Works Area WA2
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 |
6 sessions 6 sessions |
Noise monitoring |
5 sessions |
Impact water quality monitoring |
13 sessions |
Impact dolphin monitoring |
2 surveys |
Joint Environmental site inspection |
4 sessions |
Breaches
of Action and Limit Levels for Air Quality
All 1-Hour TSP and 24-hour TSP results were
below the Action and Limit Level in the reporting month.
Breaches
of Action and Limit Levels for Water Quality
Complaint, Notification of Summons and
Successful Prosecution
As informed by the Contractor on 15 Sept 14,
there is an environmental complaint received on 29 August 14 by HyD. The
complainant who lives at Tower 4, Melody Garden, Tuen Mun called reflecting
environmental issues arisen from many sand barges in the waters facing her
apartment. According to the complainant, sand was blown into her apartment
because the barges were not covered and it was worse when sand was transferred
from one vessel to another on conveyor belts. After investigation, there is no
adequate information to conclude the observed impact is related to this
Contract.
As informed by the Contractor, a public
complaint has been received by ICC on 9 September 2014 and it was referred to
this Contract, the complainant raised concern about a large amount of general
refuse such as food container and plastic bottles were observed on sea area off
the Gold Coast, Tuen Mun. After investigation, there is no adequate information
to conclude the observed impact is related to this Contract.
An air quality complaint has been received by
the Contractor on 29 September 2014 via email. The complaint was first received
by EPD via email on 5 September 2014 and it was referred by EPD to the HZMB HK
Project Management Office (Management Office) to handle the complaint directly
on 10 September 2014 following the request of the complainant. The Management
Office responded to the complainant directly on 17 September 2014. Subsequently, the complainant followed up
with the response given by the Management Office and complained again on 26
September 2014. This follow up complaint was
referred to the project team to investigate. The complainant complained
that many of the sand barges did not stay at area of reclamation works near
Chek Lap Kok or at the sea area near Tuen Mun River Trade Terminal but moored
in the sea area close to Melody Garden. Sand were easily blown to the inside
house during days with moderate wind.
The complainant suggested that, sand barges should be requested to move
away from residential areas and sand barges should be provided with cover
fabric and sprinkling to minimise environmental pollution caused by sand. After
investigation, there is no adequate information to conclude the observed impact
is related to this Contract.
No
notification of summons or prosecution was received in the reporting period.
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.
-
Control night-time lighting and glare by hooding all lights.
-
Regular review and provide maintenance to dust control measures such as
sprinkler system.
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 |
Roger Marechal |
3698 5700 |
2698 5999 |
IEC / ENPO (ENVIRON Hong Kong Limited) |
Independent Environmental Checker |
Raymond Dai |
3465 2888 |
3465 2899 |
Environmental Project Office Leader |
Y. H. Hui |
3465 2868 |
3465 2899 |
|
Contractor (China Harbour Engineering
Company Limited) |
Environmental Officer |
Richard Ng |
36932253 |
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
-
Cellular structure installation
-
Optimizing rubble mound seawalls
-
Conforming sloping seawalls
-
Laying geo-textile
-
Sand blanket laying
-
Sand filling
-
Rock filling
-
Maintenance of silt curtain & silt screen at sea water intake of
HKIA
-
Band drain installation
-
Backfill cellular structure
-
Geotechnical Instrumentation works
-
Surcharge laying
-
Capping Beams structures
-
Construction of temporary jetties for surcharge laying
-
Temporary Watermain construction
-
Flat barge of unloading public fill for surcharge laying
-
Precast Yard Setup
Land-based Works
-
Maintenance works of Site Office at Works Area WA2
-
Maintenance works of Public Works Regional Laboratory at Works Area
WA3
-
Maintenance of Temporary Marine Access at Works Area WA2
-
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 |
AMS3B |
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 ±2.5%
deviation over 24-hour sampling period.
(b)
Preparation of Filter Papers
(i)
Glass fibre filters, G810 were labelled and
sufficient filters that were clean and without pinholes were selected.
(ii)
All filters were equilibrated in the
conditioning environment for 24 hours before weighing. The conditioning
environment temperature was around 25 °C and not variable by more than ±3 °C;
the relative humidity (RH) was < 50% and not variable by more than ±5%. A
convenient working RH was 40%.
(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-5025A Calibration Kit prior to the commencement of baseline
monitoring. Bi-monthly 5-point calibration of the HVS will be carried out
during impact monitoring.
(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 |
78 |
75 - 82 |
374 |
500 |
AMS3B |
78 |
74 - 81 |
368 |
500 |
AMS7 |
78 |
73 - 83 |
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 |
43 |
20 – 96 |
176 |
260 |
AMS3B |
45 |
26 – 81 |
167 |
260 |
AMS7 |
46 |
13 – 68 |
183 |
260 |
Table 3.1 Noise Monitoring Equipment
Equipment |
Brand and Model |
Integrated Sound Level Meter |
Rion NL-31 &
B&K2238 |
Acoustic Calibrator |
Rion NC-73 & B&K 4231 |
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 |
NMS3B |
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 1.2 m above the ground for free-field measurements at NMS2. A correction
of +3 dB(A) shall be made to the free field measurements.
(b)
All measurement
at NMS3B were free field measurements in the reporting
month at NMS3B. 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 – 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 5m/s, or wind with
gusts exceeding 10m/s.
The wind speed shall be checked with a portable wind speed meter capable of
measuring the wind speed in m/s.
(a)
The microphone head of the sound level meter
was cleaned with soft cloth at regular intervals.
(b)
The meter and calibrator were sent to the
supplier or HOKLAS laboratory to check and calibrate at yearly intervals.
(c)
Calibration certificates of the sound level
meters and acoustic calibrators are provided in Appendix 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 |
66 – 67* |
75 |
NMS3B |
67 |
65 – 69* |
70/65^ |
*+3dB(A) Façade correction
included
^
Daytime noise Limit Level of 70 dB(A) applies
to education institutions, while 65dB(A) applies during school examination
period.
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 and Lowrance x-4 |
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 ·
Dissolved Oxygen (DO), mg/L ·
DO Saturation, % ·
Turbidity, NTU ·
pH ·
Suspended Solids (SS), mg/L |
Three times per
week during mid-ebb and mid-flood tides (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, 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 |
(1) 10 Sept 14 |
0 |
1 |
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 |
(1) 5 Sept 14 |
0 |
1 |
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 |
0 |
0 |
0 |
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 |
(1) 10 Sept 14 |
0 |
1 |
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 |
1 |
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 |
(1) 12 Sept 14 |
0 |
1 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
Total |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
2 |
4 |
|
|
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Note: S: Surface; and
M: Mid-depth.
4.7.3.1
For marine works, marine filling was conducted at portion E2 during
flood at area behind cellular structures on 5 September 2014. Also refer to
layout map above.
4.7.3.2
Exceedance was not due to marine based construction works of the Project
because:
4.7.3.3
As informed by the Contractor, filling was conducted on 3, 5 and 8
September 2014 at Portion E2, but with referred to monitoring record and photo
record attached, no sediment plume has been observed to flow from the inside of
the perimeter silt curtain to the outside of the perimeter silt curtain and no
discoloration of sea water has been observed.
4.7.3.4
Photo record of sea condition taken during flood tide at north of HKBCF
Reclamation Works near IS8 on 5 September 2014.
4.7.3.5
Construction activities were reviewed, almost the same marine works were
conducted at almost the same location on 3, 5 and 8 September 2014, but no SS exceedance
was recorded on 3 and 8 September 2014. This indicates that the SS exceedance
was unlikely to attribute to marine works of this Contract.
4.7.3.6
IS(Mf)9 and IS(Mf)16 are located closer to the active works than
monitoring station IS8. Depth Averaged Suspended Solids (SS) values (in mg/L)
recorded during the flood tide on the same day at IS(Mf)9 and IS(Mf)16 were
below the Action and Limit Level which shows that the water quality closer to
active works was not adversely affected.
4.7.3.7
The monitoring location of monitoring station IS8 are considered located
upstream to the active works of this project during flood tide. Therefore it
was unlikely that the exceedance recorded at IS8 was due to active construction
activities of this project.
4.7.3.8
Turbidity level (NTU) result recorded on 5 September 2014 at IS8 during
flood tide is 24.5 NTU which is below the Action and Limit Level, this
indicates turbidity level was not adversely affected.
4.7.3.9
The exceedance was likely due to local effects in the vicinity of IS8.
4.7.3.10
For action required under the action plan, refer to EM&A manual of this Contract for
Event and Action Plan for Water Quality.
4.7.3.11
Action taken under the action plan:
1. Not applicable as SS was not measured in
situ;
2. After considering the above mentioned investigation
results, it appears that it was unlikely that the SS exceedance was attributed
to active construction activities of this project;
3. IEC, contractor and ER were informed via email;
4. Monitoring data, all plant, equipment and
Contractor's working methods were checked;
5-7. Since it is considered that the SS exceedance
is unlikely to be project related, as such, actions 5 - 7 under the EAP are not
considered applicable.
4.7.3.12
Nevertheless, the Contractor was
reminded to ensure provision of ongoing maintenance to the silt curtains and to
carry out maintenance work once defects were found.
4.7.3.13 As informed by the Contractor, maintenance work of the silt curtain is
on-going and carried out by the Contractor on a daily basis.
1. Not applicable as SS was not measured in situ;
2. After considering the above mentioned investigation results, it
appears that it was unlikely that the SS exceedances were attributed to active
construction activities of this project;
3. IEC, contractor and ER were informed via email;
4. Monitoring data, all plant, equipment and Contractor's working
methods were checked;
5-7. Since it is considered that the SS exceedances are unlikely to be
project related, as such, actions 5 - 7 under the EAP are not considered
applicable.
1. Not applicable as SS was not measured in
situ;
2. After considering the above mentioned
investigation results, it appears that it was unlikely that the SS exceedance
was attributed to active construction activities of this project;
3. IEC, contractor and ER were informed via email;
4. Monitoring data, all plant, equipment and
Contractor's working methods were checked;
5-7. Since it is considered that the SS exceedance
is unlikely to be project related, as such, actions 5 - 7 under the EAP are not
considered applicable.
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 |
Integrated
into T7000 Garmin
GPS Map 76C |
Computers
(T7000 Tablet, Intel Atom) |
Windows
7/MSO 13 Logger
|
Camera
|
Nikon
D7100 300m 2.8D fixed focus Nikon
D90 80-400mm zoom lens |
Laser
Rangefinder |
Range
Finder Bushnell 1000m |
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, Effort by
Area and Beaufort Sea State
Survey |
Date |
Area |
Beaufort |
Effort (km) |
Total Distance Travelled
(km) |
|
1 |
09/21/2014 |
NWL |
1 |
3.1 |
52.3 |
|
09/21/2014 |
NWL |
2 |
11.7 |
|||
09/21/2014 |
NEL |
1 |
29.9 |
|||
09/21/2014 |
NEL |
2 |
7.6 |
|||
09/22/2014 |
NWL |
1 |
21.2 |
58.1 |
||
09/22/2014 |
NWL |
2 |
36.9 |
|||
2 |
09/29/2014 |
NWL |
1 |
26.2 |
63.2 |
|
09/29/2014 |
NWL |
2 |
37 |
|||
09/30/2014 |
NWL |
1 |
7.5 |
46.7 |
||
09/30/2014 |
NWL |
2 |
2.5 |
|||
09/30/2014 |
NEL |
1 |
5.9 |
|||
09/30/2014 |
NEL |
2 |
30.8 |
|||
TOTAL in September 2014 |
220.3 |
*Remark: Surveys conduct under
Beaufort Sea State 3 or below are considered as under favourable condition.
Table 5.4 Impact Dolphin Monitoring Survey Details September 2014
Date |
Location |
No. Sightings “on effort” |
No. Sightings “opportunistic” |
09/21/2014 |
NW L |
0 |
0 |
NEL |
0 |
0 |
|
09/22/2014 |
NW L |
0 |
2 |
NEL |
0 |
0 |
|
09/29/2014 |
NW L |
3 |
1 |
NEL |
0 |
0 |
|
09/30/2014 |
NW L |
0 |
0 |
NEL |
0 |
0 |
|
TOTAL in September 2014 |
3 |
3 |
Table 5.5 The Encounter Rate of Number of Dolphin
Sightings & Total Number of Dolphins per Area^
Encounter Rate of Number
of Dolphin Sightings (STG)* |
||||||
Date |
NEL Track (km) |
NWL Track (km) |
NEL Sightings |
NWL Sightings |
NEL Encounter Rate |
NWL Encounter Rate |
21 & 22/09/2014 |
37.5 |
72.9 |
0 |
0 |
0.0 |
0.0 |
29 & 30/09/2014 |
36.7 |
73.2 |
0 |
3 |
0.0 |
4.1 |
Encounter Rate of Total Number of Dolphins (ANI)** |
||||||
Date |
NEL Track (km) |
NWL Track (km) |
NEL Dolphins |
NWL Dolphins |
NEL Encounter Rate |
NWL Encounter Rate |
21 & 22/09/2014 |
37.5 |
72.9 |
0 |
0 |
0.0 |
0.0 |
29 & 30/09/2014 |
36.7 |
73.2 |
0 |
11 |
0.0 |
15.0 |
* Encounter Rate of Number
of Dolphin Sightings (STG) presents encounter rates
in terms of groups per 100km.
** Encounter Rate of
Total Number of Dolphins (ANI) presents encounter rates
in terms of individuals per 100km. And the encounter rate is not corrected for
individuals, calculation may represent double counting.
^The table is made only for reference to
the quarterly STG & ANI, which were adopted for the Event & Action
Plan.
Air Quality
Noise
Water Quality
Chemical and Waste Management
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/G |
06/08/2012 |
N/A |
HyD |
Hong Kong – Zhuhai
– Macao Bridge Hong Kong Boundary Crossing Facilities |
EP-354/2009/B |
28/01/2014 |
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 |
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-RS0990-14 |
18/09/2014 |
24/12/2014 |
CHEC |
Reclamation Works in Contract HY/2010/02 |
NCO |
Construction Noise Permit |
GW-RE0656-14 |
30/06/2014 |
22/12/2014 |
CHEC |
Section of TKO Fill Bank under Contract HY/2010/02 |
·
1hr TSP and 24hrs TSP monitoring data of 4 August
to 1 September 2014 have been reviewed.
·
Site inspections were conducted jointly on 28
August and 4 September 2014 with RSS and the Contractor.
·
There is no sufficient information provided by the
complainant to make sure that the concerned barges are related to this project.
·
Date of the observed impact was not specified by
the complainant so the impact air quality monitoring (IAQM) results available
for August 2014 and early September 2014 for monitoring stations close to the
concerned area – AQMS1, ASR1, ASR5, ASR6 and ASR10 have been reviewed and there
was no impact air quality monitoring result that shows 1-hour TSP or 24-hour
TSP exceeded the action (AL)/limit level (LL).
·
Photo record below shows that sand barges were not
covered but they are equipped with watering equipment and in order to prevent
generation of fugitive dust, watering equipment was used to keep the sand
filling material wet.
·
In addition, site inspection has been jointly
conducted with the Contractor and RSS on 28 August and 4 September 2014, but no
generation of fugitive dust was observed to be caused by barges loaded with
filling material. Transfer of sand between vessels was
not observed.
·
Site inspections were conducted jointly on 25
September 2014 with RSS and the Contractor and 18 jointly with RSS, IEC and the
Contractor
·
Site visit to the sea area between HKBCF
Reclamation Works and Tune Mun was conducted on 22 September 2014.
·
Checking sample of training record
·
There is no sufficient information provided by the
complainant to make sure that the general refuse such as food container and
plastic bottles are related to this project.
·
Photo of site condition was reviewed, temporary
refuse collection facility/ appropriate containers such as rubbish bins were
provided by the Contractor on reclamation and vessel to collect general
refuses, please refer to the photo below:
·
Photo records shows collection of general refuse by
workers on a regular basis:
·
Site inspections were conducted on 18 September
2014 jointly with RSS, IEC and the Contractor and jointly on 25 September 2014
with RSS and the Contractor, but no general refuse was observed on sea area.
·
In addition, site visit to the sea area between
HKBCF Reclamation Works and Tune Mun was conducted on 22 September 2014. No
general refuse was observed to flow from HKBCF Reclamation Works to Tune Mun
area. Also refer to photo record below:
·
1hr TSP and 24hrs TSP monitoring data of September
2014 have been reviewed.
·
Site inspections were conducted jointly with RSS,
IEC and the Contractor on 18 September 2014 and jointly with RSS and the
Contractor on 25 September 2014.
·
There is no sufficient information provided by the complainant
to make sure that the concerned barges are related to this project.
·
Date of the observed impact was not specified by
the complainant so the impact air quality monitoring (IAQM) results available
for September 2014 for monitoring stations close to the concerned area – AQMS1,
ASR1, ASR5, ASR6 and ASR10 have been reviewed and there was no impact air
quality monitoring result that shows 1-hour TSP or 24-hour TSP exceeded the
action (AL)/limit level (LL).
·
Photo record below shows that sand barges were not
covered but they are equipped with watering equipment and in order to prevent
generation of fugitive dust, watering equipment was used to keep the sand
filling material wet.
·
In addition, site inspections were conducted
jointly with RSS, IEC and the Contractor on 18 September 2014 and jointly with
RSS and the Contractor on 25 September 2014, but no generation of fugitive dust
was observed to be caused by barges loaded with filling material.
·
After investigation, there is no adequate
information to conclude the observed impact is related to this Contract.
Marine-based Works
-
Cellular structure installation
-
Conforming sloping seawalls
-
Sand filling
-
Rock filling
-
Maintenance of silt curtain & silt screen
at sea water intake of HKIA
-
Band drain installation
-
Backfill cellular structure
-
Geotechnical Instrumentation works
-
Surcharge laying
-
Capping Beams structures
-
Construction of temporary jetties for
surcharge laying
-
Temporary Watermain construction
-
Flat barge of unloading public fill for
surcharge laying
-
Precast Yard Setup
Land-based Works
-
Maintenance
works of Site Office at Works Area WA2
-
Maintenance works of Public Works
Regional Laboratory at Works Area WA3
-
Maintenance of Temporary Marine Access at
Works Area WA2
*Construction activities in September & October 2014 will be changed subject to works progress.
-
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.
-
Control night-time lighting and glare by hooding
all lights.
-
Regular review and provide maintenance to dust
control measures such as sprinkler system.
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.
l Regular review and provide
maintenance to dust control measures such as sprinkler system.
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, enclosure for noisy plants or enhancement works to provide
sufficient acoustic decoupling measure(s). 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 Acoustic decoupling measures should be properly implemented for all existing
and incoming construction vessels with continuous and regularly checking to
ensure effective implementation of acoustic decoupling measures.
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.
l Control
night-time lighting and glare by hooding all lights.
[1] A noteworthy
observation is to show that either the conduct of the surveys themselves is
affected, i.e., the noted vessel or works impedes the progress or view of the survey
platform. In addition, the vessel or construction works may be different or
additional to that observed previously and further, are of such a nature that
they are a likely to create an impact on the movement or behaviour of the
subject of the impact survey, in this case, the dolphins.