Executive
summary
Apex Testing & Certification Limited (Apex) was commissioned to
undertake the Environmental Team (ET) services (including environmental
monitoring and audit (EM&A)) for the construction activities in Zone 2A,
consisting of Foundation, Excavation and Lateral Support Works for Integrated
Basement and Underground Road (Contract No.: GW/2020/05/073); and Zone 2B
& 2C consisting of Piling Works for Integrated Basement and Underground
Road (Contract No.: CC/2020/2B/088) at WKCD. The major construction works and
EM&A programme for Zone 2A and Zone 2B & 2C commenced on 03 October
2020 and 30 September 2021 respectively.
The Project Proponent is the West Kowloon Cultural District Authority
(WKCDA). The overall works for the WKCD fall under two
separate categories of Designated Project (DP) of the Environmental Impact
Assessment Ordinance (EIAO), namely an “engineering feasibility study of urban
development projects with a study area covering more than 20 ha or involving a
total population of more than 100 000” (Item 1 of Schedule 3) and “an underpass
more than 100m in length under the built areas” (Item A.9, Part I, Schedule 2).
An Environmental Permit No. EP-453/2013/B (EP) was issued with respect to the
“Underpass Road and Austin Road Flyover Serving the West Kowloon Cultural
District” which specifically includes the abovementioned category of DP under
Item A.9, Part I, Schedule 2 of the EIAO.
This Monthly EM&A Report presents the
monitoring works at Zone 2A and
Zone 2B & 2C from 01 to 31 July 2022.
Exceedance of Action and Limit Levels
There was no breach of Action or Limit levels for Air Quality
(1-hour TSP and 24-hour TSP) and Construction Noise in this reporting month.
Implementation of
Mitigation Measures
Construction phase weekly site inspections
were carried out on 07, 14, 21 and 28 July 2022 for
Foundation, Excavation and Lateral Support Works in Zone 2A and on 05, 12, 20 and
27 July 2022 for Piling Works in Zone 2B & 2C to
confirm the implementation measures undertaken by the Contractors in the
reporting month. The outcomes are presented in Section 4 and the status of
implementation of mitigation measures in the site is shown in Appendix J.
Landscape and visual impact inspections were conducted as part of
the abovementioned weekly site inspections during the reporting month. No
adverse comment on landscape and visual aspects was made during these
inspections.
Record of Complaints
Four environmental complaints were recorded in the reporting month.
Record of Notifications
of Summons and Successful Prosecutions
No notifications of summons and successful prosecutions were
recorded in the reporting month.
Future Key Issues
The major site works for Zone 2A scheduled to be commissioned in the
coming month include:
Zone 2A-1
●
ELS (Stage 1) – Grouting / Pipe Pile Works
–
Stage 2 Grouting
The major site works for Zone 2B & 2C scheduled to be commissioned
in the coming month include:
KD03
(Stage 3-1)
● Bored Pile Works
– RCD Drilling and Excavation
KD04 (Stage 4-1), KD05 (Section 1), KD06 (Section 2), KD07 (Section 3)
● Bored Pile Works
– RCD Drilling, Airlifting, Cage Installation & Concreting and
Excavation
KD08 (Section 4), KD09 (Section 5)
● Bored Pile Works
– RCD Drilling, Airlifting, Cage Installation & Concreting and
Excavation
● Socketed Steel H Piling
Potential environmental impacts due to the construction activities,
including air, noise, water quality, waste, landscape and visual, will be
monitored or reviewed. The recommended environmental mitigation measures shall
be implemented on site and regular inspections as required will be carried out
to ensure that the environmental conditions are acceptable.
Apex Testing & Certification Limited (Apex) was commissioned to
undertake the Environmental Team (ET) services (including environmental
monitoring and audit (EM&A)) for the construction activities in Zone 2A,
consisting of Foundation, Excavation and Lateral Support Works for Integrated
Basement and Underground Road (Contract No.: GW/2020/05/073) ; and Zone 2B
& 2C consisting of Piling Works for Integrated Basement and Underground
Road (Contract No.: CC/2020/2B/088) at WKCD. The purpose of the development in
Zone 2A and Zone 2B & 2C is to reserve for Integrated Basement (IB) and
Underground Road (UR). The Zone 2A construction activities involve the
foundation, excavation and lateral support (ELS) works, road works, drainage
diversion works, and temporary car parking. The Zone 2B & 2C construction
activities involve the piling works. The major construction works and EM&A
programme for Zone 2A and Zone 2B & 2C commenced on 03 October 2020 and 30
September 2021 respectively.
The overall works for the WKCD fall under two separate categories of
Designated Project (DP) of the Environmental Impact Assessment Ordinance
(EIAO), namely an “engineering feasibility study of urban development projects
with a study area covering more than 20 ha or involving a total population of
more than 100 000” (Item 1 of Schedule 3) and “an underpass more than 100m in
length under the built areas” (Item A.9, Part I, Schedule 2). An Environmental
Permit No. EP-453/2013/B (EP) was issued with respect to the “Underpass Road
and Austin Road Flyover Serving the West Kowloon Cultural District” which
specifically includes the abovementioned category of DP under Item A.9, Part I,
Schedule 2 of the EIAO. The captioned projects include part of the
abovementioned underpass road located within the site boundary falls under this
same category.
The Monthly EM&A Report is
prepared in accordance with the Condition 3.4 of the Environmental Permit No.
EP-453/2013/B. This Monthly EM&A Report presents
the monitoring works at Zone 2A and Zone 2B & 2C from 01 to 31 July
2022. The purpose of
this report is to summarise the findings in the EM&A of the project over
the reporting period.
The
organisation chart and lines of communication with respect to the on-site
environmental management structure together with the contact information of the
key personnel are shown in Appendix A.
During the reporting period, construction works at Zone 2A
undertaken include:
Zone 2A-1
●
ELS (Stage 1) – Grouting / Pipe Pile Works
–
Stage 2 Grouting
Zone 2A-2
●
Pumping Test
–
Baseline Monitoring
–
Pumping Test
During the reporting period, construction works at Zone 2B & 2C
undertaken include:
KD03 (Stage
3-1), KD06 (Section 2)
●
Bored Pile Works
–
RCD Drilling, Airlifting, Cage Installation
& Concreting and Excavation
KD04 (Stage 4-1)
●
Bored Pile Works
–
RCD Drilling and Excavation
KD05 (Section 1), KD07 (Section 3)
●
Predrilling
●
Bored Pile Works
–
RCD Drilling, Airlifting, Cage
Installation & Concreting and Excavation
KD08 (Section
4)
●
Bored Pile Works
–
RCD Drilling, Airlifting, Cage
Installation & Concreting and Excavation
●
Socketed Steel H Piling
KD09 (Section
5)
●
Predrilling
●
Bored Pile Works
–
RCD Drilling, Airlifting, Cage
Installation & Concreting and Excavation
●
Socketed Steel H Piling
The Construction Works Programme of Zone 2A and Zone 2B & 2C is provided in Appendix B. A
layout plan of the Project is provided in Figure 1. Please refer to Table 4.3 and Table 4.4 on the status of the environmental
licenses.
1.4
Summary of EM&A Requirements and Alternative Monitoring Locations
The EM&A programme requires environmental monitoring of air quality,
noise, landscape and visual as specified in the approved EM&A Manual.
A summary of impact EM&A requirements
is presented in Table 1.1.
Table 1.1: Summary
of Impact EM&A Requirements
|
Parameters
|
Descriptions
|
Locations
|
Frequencies
|
|
Air Quality
|
24-Hours TSP
|
AM3-The Victoria Towers Tower 1
|
At least once every 6 days
|
|
1-Hour TSP
|
AM3-The Victoria Towers Tower 1
|
At least 3 times every 6 days
|
|
24-Hours TSP
|
AM4-Canton Road Government Primary School
|
At least once every 6 days
|
|
1-Hour TSP
|
AM4-Canton Road Government Primary School
|
At least 3 times every 6 days
|
|
24-Hours TSP
|
AM5-Topside Developments at West Kowloon Terminus Site
|
At least once every 6 days
|
|
1-Hour TSP
|
AM5-Topside Developments at West Kowloon Terminus Site
|
At least 3 times every 6 days
|
|
Noise
|
Leq, 30 minutes
|
NM2-The Arch, Sun Tower
|
Weekly
|
|
Leq, 30 minutes
|
NM3-The Victoria Towers Tower 1
|
Weekly
|
|
Leq, 30 minutes
|
NM4-Canton Road Government Primary School
|
Weekly
|
|
Leq, 30 minutes
|
NM5-Development next to Austin Station
|
Weekly
|
|
Landscape & Visual
|
Monitor implementation of proposed mitigation measures during the
construction stage
|
As described in Table 9.1 and 9.2 of the EM&A Manual
|
Bi-Weekly
|
The EM&A programme for the Project should require 5 noise monitoring
station and 5 air quality monitoring stations located closest to the Project
area. With
regard to the
monitoring activities at M+ Museum and the Lyric Complex, three monitoring
stations had been considered, including AM1 (International Commerce Centre),
AM2 (The Harbourside Tower 1) for air monitoring, and NM1 (The Harbourside
Tower 1) for noise monitoring.
In the context of the construction
activities in Zone 2A and Zone 2B & 2C, all other monitoring locations
including AM3 (The Victoria Towers
Tower 1), AM4 (Canton Road Government Primary School), and AM5 (Topside
Developments at West Kowloon Terminus Site) for air monitoring; and NM2 (The Arch, Sun Tower), NM3 (The Victoria Towers Tower 1), NM4 (Canton
Road Government Primary School) and NM5 (Development next to Austin Station) for noise
monitoring, have
been taken into account. However, access to all these originally designated
monitoring stations was declined as described below point-by-point.
The Arch management office and owners’
committee have formally declined the proposal of setting up noise monitoring
instrument on its premises at the podium level of Sun Tower (NM2) on 24 July
2014. Thus, alternative
noise monitoring location was identified at the ground floor in front of The Arch – Sun Tower (NM2A),
which is at the same location as stated in the EM&A Manual for consistency. No management
approval is required at the ground floor for conducting the noise monitoring. This alternative air monitoring location was approved by EPD on 29
September 2020.
The Victoria Towers management
office formally declined the proposal of setting up air
quality and noise monitoring instruments on its premises at the podium area
of Tower 1 (AM3/NM3) on 16 June 2020. Alternative air monitoring location was
identified at ground floor at the Northeast corner of West Kowloon Station’s
station box (AM3A), in the same direction to the area of major construction
site activities in Zone 2A. This alternative air monitoring location was
approved by EPD on 29 September 2020. An alternative noise monitoring location
was identified at the ground floor in front of the Xiqu
Centre (NM3A), which is set closer to the construction site boundary with more
direct line sight to the major site activities and higher exposure to the
construction noise with no disturbance to the premises’ occupants during noise
monitoring activities. No management approval is required at the ground floor
for conducting the noise monitoring. This alternative air monitoring location
was approved by EPD on 29 September 2020.
Canton Road Government Primary
School formally declined the proposal of setting up air
quality and noise monitoring instruments on its premise at the podium level (AM4/NM4) on 16 June 2020. Alternative air monitoring
location was identified at ground floor at the Southeast corner of West Kowloon Station’s station box
(AM4A), in same direction to the area of major construction site activities in
Zone 2A. This alternative air monitoring location was approved by EPD on 29
September 2020. An alternative noise monitoring
location was identified at the ground floor next to Tsim Sha Tsui Fire
Station (NM4A), which is set closer to the construction site boundary
with more direct line sight to the major site activities and higher exposure to
the construction noise with no disturbance to the premises’ occupants during noise monitoring
activities. No management approval is required at the ground floor for
conducting the noise monitoring. This alternative air monitoring location was
approved by EPD on 29 September 2020.
MTR also formally declined the
access to the designated AM5 location (topside developments at West Kowloon
Terminus Site) on 15 July 2020. Alternative air monitoring location was
identified at ground floor at the North
of West Kowloon Station’s station box (AM5A), in same direction
to the area of major construction site activities in Zone 2A. This alternative
air monitoring location was approved by EPD on 29 September 2020.
Grand Austin property management
office formally declined our proposal of setting up noise monitoring instrument on its premises at the podium
level (NM5) on 10 July 2020. Alternative noise monitoring location was
identified at the Pedestrian road (ground floor) outside West Kowloon Station
(NM5A), which is set closer to the
construction site boundary with more direct line sight to the major site
activities and higher exposure to the construction noise with no disturbance to
the premises’ occupants during noise monitoring activities. No management
approval is required at the ground floor for conducting the noise monitoring.
This alternative air monitoring location was approved by EPD on 29 September
2020.
The Environmental Quality Performance Limits for air quality and
noise are shown in Appendix
C.
The Event and Action Plan for air quality, construction noise, and landscape and visual are shown in Appendix D.
The EM&A programme followed
the recommended mitigation measures in the EM&A Manual. The EM&A
requirements as well as the summary of implementation status of the
environmental mitigation measures are provided in Appendix J.
Air quality and noise monitoring
methodology, including the monitoring locations, equipment used, parameters, frequency
and duration etc., are described in this Section. The environmental monitoring
schedules for the reporting period and the tentative monitoring Schedule for
the coming month are provided in Appendix E.
The relevant EM&A monitoring
requirements and details for landscape and audit impact, are also presented in
this Section.
Table 2.1 summarizes the monitoring
parameters, frequency and duration of the TSP monitoring.
Table
2.1: Air
Quality Monitoring Parameters, Frequency and Duration
|
Parameter
|
Frequency
|
Duration
|
|
24-hour TSP
|
At least once in every six-days
|
24 hours
|
|
1-hour TSP
|
At least 3 times every six-days
|
60 minutes
|
2.2.2
Monitoring Locations
Monitoring
stations and locations are given in Table
2.2
and shown in Figure 1.
Table 2.2: Air Quality
Monitoring Station
|
Monitoring Station
|
Location Description
|
|
AM3A
|
Northeast corner of West Kowloon Station’s station box
(G/F)
|
|
AM4A
|
Southeast corner of West Kowloon Station’s station box
(G/F)
|
|
AM5A
|
North of West Kowloon Station’s station box (G/F)
|
2.2.3
Monitoring Equipment
Continuous 24-hour TSP air quality monitoring was conducted using
High Volume Sampler (HVS) (Model: TE-5170) located at the designated monitoring
station. The HVS meets all the requirements stated in of the EM&A Manual.
Portable direct reading dust meter was used to carry out the 1-hour TSP
monitoring. Table 2.3 summarizes the equipment used in the
impact air quality monitoring. Copies of the calibration certificates for the
HVS, calibration kit and portable dust meters are attached in Appendix F.
Table 2.3: TSP
Monitoring Equipment
|
Equipment
|
Model
|
|
24-hour TSP monitoring
|
|
High Volume Sampler
|
TE-5170 (Serial No.: 4340; 3998; 4344)
|
|
Calibrator
|
TE-5025A (Orifice I.D.: 3543)
|
|
1-hour TSP monitoring
|
|
Portable direct reading dust meter
|
Sibata LD-3B (Serial No.: 235811,
336338, 567188)
|
Calibration of the HVS (five-point
calibration) using Calibration Kit was carried out every two months. The HVS
calibration orifice will be calibrated annually. Calibration certificate of the
TE-5025A Calibration Kit and the HVS are provided in Appendix F.
The 1-hour TSP monitoring
should be determined periodically (e.g. annually) by the HVS to check the
validity and accuracy of the results measured by direct reading method.
24-hour TSP Monitoring
Installation
The HVS was installed at the site boundary. The following criteria
were considered in the installation of the HVS.
–
A horizontal platform with
appropriate support to secure the sampler against gusty wind was provided.
–
The distance between the HVS
and any obstacles, such as buildings, was at least twice the height that the
obstacle protrudes above the HVS.
–
A minimum of 2 metres
separation from walls, parapets and penthouse was required for rooftop sampler.
–
A minimum of 2 metres
separation from any supporting structure, measured horizontally was required.
–
No furnace or incinerator flues
or building vent were nearby.
–
Airflow around the sampler was
unrestricted.
–
The sampler has been more than
20 metres from any drip line.
–
Permission was obtained to set
up the sampler and to obtain access to the monitoring station.
–
A secured supply of electricity
is needed to operate the sampler.
Preparation of Filter
Papers
–
Glass fibre filters were
labelled and sufficient filters that were clean and
without pinholes were selected.
–
The filters used are specified
to have a minimum collection efficiency of 99 percent for 0.3 µm (DOP)
particles.
–
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
with relative humidity (RH) < 50% and was not variable by more than ±5
%. A convenient working RH was 40%. All preparation of filters was done by Hong Kong Laboratory Accreditation Scheme (HOKLAS) accredited laboratory.
Field Monitoring
Procedures
–
The power supply was checked to
ensure the HVS works properly.
–
The filter holder and the area
surrounding the filter were cleaned.
–
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.
–
The filter was properly aligned
on the screen so that the gasket formed an airtight seal on the outer edges of
the filter.
–
The swing bolts were fastened
to hold the filter holder down to the frame. The pressure applied should be sufficient to avoid air leakage at the edges.
–
The shelter lid was closed and
was secured with the aluminium strip.
–
The HVS was warmed-up for about
5 minutes to establish run-temperature conditions.
–
A new flow rate record sheet was
set into the flow recorder.
–
The flow rate of the HVS was
checked and adjusted at around 1.3 m3/min. The range specified in the
EM&A Manual was between 0.6-1.7 m3/min.
–
The programmable timer was set
for a sampling period of 24 hours, and the starting time, weather condition and
the filter number were recorded.
–
The initial elapsed time was
recorded.
–
At the end of sampling, the
sampled filter was removed carefully and folded in half
length so that only surfaces with collected particulate matter were in
contact.
–
It was then placed in a clean
plastic envelope and sealed.
–
All monitoring information was
recorded on a standard data sheet.
–
Filters were sent to a Hong
Kong Laboratory Accreditation Scheme (HOKLAS) accredited laboratory for
analysis.
Maintenance and Calibration
–
The HVS and its accessories are
maintained in good working condition, such as replacing motor brushes routinely
and checking electrical wiring to ensure a continuous power supply.
–
HVSs were calibrated upon
installation and thereafter at bi-monthly intervals. The calibration kits were
calibrated annually.
–
Calibration
records for HVS and calibration kit are shown in Appendix F.
1-hour TSP Monitoring
Field Monitoring
The measuring procedures of the 1-hour dust meter are in accordance with
the Manufacturer’s Instruction Manual as follows:
–
Turn the power on.
–
Close the air collecting
opening cover.
–
Push the “TIME SETTING” switch
to [BG].
–
Push “START/STOP” switch to
perform background measurement for 6 seconds.
–
Turn the knob at SENSI ADJ position
to insert the light scattering plate.
–
Leave the equipment for 1
minute upon “SPAN CHECK” is indicated in the display.
–
Push “START/STOP” switch to
perform automatic sensitivity adjustment. This measurement takes 1 minute.
–
Pull out the knob and return it
to MEASURE position.
–
Setting time period of 1 hour for the 1-hour TSP
measurement.
–
Push
“START/STOP” to start the 1-hour TSP measurement.
–
Regular checking of the time period setting to ensure monitoring time of
1 hour.
Maintenance and Calibration
–
The 1-hour dust meter would be
checked at 3-month intervals and calibrated at 1-year intervals throughout all
stages of the air quality monitoring.
–
Calibration records for direct
dust meters are shown in Appendix F.
Weather Condition
–
Meteorological data extracted
from Hong Kong Observatory for the reporting month is provided in Appendix H.
Table 2.4 summarizes the monitoring parameters, frequency and duration of
noise monitoring. The noise in A-weighted levels Leq,
L10 and L90 are recorded in a 30-minute interval between
0700 and 1900 hours.
Table 2.4: Noise Monitoring
Parameters, Period and Frequency
|
Time Period
|
Parameters
|
Frequency
|
|
Daytime
on normal weekdays
(0700-1900
hours)
|
Leq(30 min), L90(30 min) & L10(30
min)
|
Once
every week
|
Note: *70 dB(A) for
schools and 65 dB(A) during school examination periods.
If works are to be carried out during restricted hours, the conditions
stipulated in the Construction Noise Permit (CNP) issued by the Noise Control
Authority have to be followed.
Noise monitoring stations and locations are given in Table
2.5 and shown in Figure 1.
Table 2.5: Noise
Monitoring Station
|
Monitoring Station
|
Location
|
|
NM2A
|
The Arch – Sun
Tower (G/F)
|
|
NM3A
|
Xiqu Centre (G/F)
|
|
NM4A
|
Next to Tsim Sha Tsui Fire Station (G/F)
|
|
NM5A
|
Pedestrian road (G/F) outside West Kowloon
Station
|
2.3.3
Monitoring Equipment
Integrating Sound Level
Meter was used for noise monitoring. It was a Type 1 sound level meter capable
of giving a continuous readout of the noise level readings including equivalent
continuous sound pressure level (LAeq) and percentile
sound pressure level (Lx). They comply with International
Electrotechnical Commission Publications 651:1979 (Type 1) and 804:1985 (Type
1). Table 2.6 summarizes the noise monitoring equipment model being used.
Table 2.6: Noise
Monitoring Equipment
|
Equipment Model
|
|
|
Integrating Sound Level Meter
|
Calibrator
|
|
AWA5661 (Serial No.: 301135)
|
Quest
QC-10 (Serial No.: Q19010183)
|
2.3.4
Monitoring Methodology
Field Monitoring
–
The microphone of the Sound
Level Meter was set at least 1.2 m above the ground.
–
Free Field measurement was made
at NM5A monitoring location.
–
The battery condition was
checked to ensure the correct functioning of the meter.
–
Parameters such as frequency
weighting, the time weighting and the measurement time were set as follows:
- frequency weighting:
A
- time weighting: Fast
- time measurement: 30
minutes intervals (between 0700-1900 on normal
weekdays)
–
Prior to and after each noise
measurement, the meter was calibrated using a Calibrator for 94 dB at 1
kHz. If the difference in the
calibration level before and after measurement was more than 1 dB, the
measurement would be considered invalid and has to be repeated
after re-calibration or repair of the equipment.
–
During the monitoring period,
the Leq, L10 and L90
were recorded. In addition, any
site observations and noise sources were recorded on a standard record sheet.
–
A correction of +3dB(A) was
made to the free field measurements.
Maintenance and Calibration
–
The microphone head of the
sound level meter and calibrator is cleaned with soft cloth at quarterly
intervals.
–
The sound level meter and
calibrator are sent to the supplier or HOKLAS laboratory to check and calibrate
at yearly intervals.
–
Calibration records are shown
in Appendix F.
Weather Condition
–
Meteorological data extracted
from Hong Kong Observatory for the reporting month is provided in Appendix H.
2.4
Landscape and Visual
Table
2.7 details the monitoring program (as
proposed in the WKCD EIA report) for landscape and visual impact during the
construction phase.
Table 2.7: Monitoring Program
for Landscape and Visual Impact during Construction Phase
|
Stage
|
Monitoring
Task
|
Frequency
|
Report
|
Approval
|
|
Construction
|
Monitor implementation of proposed mitigation
measures during the construction stage.
|
Bi-weekly
|
ET to report on Contractor’s compliance
|
Counter-signed by IEC
|
During the landscape and visual impact monitoring, any changes in
relation to the landscape and visual amenity should be monitored with reference
to the baseline conditions of the site. In addition, mitigation measures were
proposed in the WKCD EIA report to minimise the landscape and visual impacts
during the construction phase. The proposed mitigation measures as shown in
Table 9.1 and Table 9.2 of the EM&A Manual should be checked for proper
implementation.
Air quality, noise
and landscape and visual impact
monitoring was undertaken in compliance
with the EM&A Manual during the reporting
month.
3.2
Air Quality Monitoring
Results of 1-hour TSP are summarised in Table 3.1.
Graphical plots of the monitoring results are shown in Appendix G.
Table 3.1: Summary
of 1-hour TSP monitoring results
|
Monitoring Station
|
Monitoring Date
|
Start Time
|
1-hour TSP (μg/m3)
|
Range (μg/m3)
|
Action Level (μg/m3)
|
Limit Level (μg/m3)
|
|
1st Result
|
2nd Result
|
3rd Result
|
|
AM3A
|
04-Jul-22
|
08:08
|
51
|
49
|
50
|
38-56
|
280.4
|
500
|
|
05-Jul-22
|
14:07
|
49
|
45
|
50
|
|
11-Jul-22
|
08:09
|
43
|
43
|
42
|
|
16-Jul-22
|
14:11
|
40
|
41
|
38
|
|
22-Jul-22
|
08:03
|
47
|
48
|
47
|
|
28-Jul-22
|
14:06
|
54
|
53
|
56
|
|
AM4A
|
04-Jul-22
|
08:16
|
48
|
48
|
51
|
41-57
|
278.5
|
500
|
|
05-Jul-22
|
14:15
|
46
|
52
|
52
|
|
11-Jul-22
|
08:17
|
42
|
42
|
41
|
|
16-Jul-22
|
14:19
|
43
|
44
|
43
|
|
22-Jul-22
|
08:11
|
48
|
45
|
50
|
|
28-Jul-22
|
14:14
|
55
|
57
|
52
|
|
AM5A
|
04-Jul-22
|
08:31
|
50
|
50
|
50
|
37-58
|
275.4
|
500
|
|
05-Jul-22
|
14:32
|
51
|
45
|
51
|
|
11-Jul-22
|
08:32
|
48
|
47
|
41
|
|
16-Jul-22
|
14:36
|
41
|
37
|
41
|
|
22-Jul-22
|
08:26
|
47
|
44
|
48
|
|
28-Jul-22
|
14:22
|
53
|
58
|
56
|
3.2.2
24-hour TSP
Results of 24-hour TSP are summarised in Table 3.2.
Graphical plots of the monitoring results are shown in Appendix G.
Table 3.2: Summary
of 24-hour TSP monitoring results
|
Monitoring Station
|
Monitoring Date
|
Start Time
|
Monitoring Results (μg/m3)
|
Range (μg/m3)
|
Action Level (μg/m3)
|
Limit Level (μg/m3)
|
|
AM3A
|
04-Jul-22
|
10:00
|
50.5
|
37.2-54.0
|
152.4
|
260
|
|
05-Jul-22
|
10:00
|
46.1
|
|
11-Jul-22
|
10:00
|
43.5
|
|
16-Jul-22
|
10:00
|
37.2
|
|
22-Jul-22
|
10:00
|
45.9
|
|
28-Jul-22
|
10:00
|
54.0
|
|
AM4A
|
04-Jul-22
|
10:00
|
48.5
|
41.6-49.1
|
152.6
|
260
|
|
05-Jul-22
|
10:00
|
44.8
|
|
11-Jul-22
|
10:00
|
42.6
|
|
16-Jul-22
|
10:00
|
41.6
|
|
22-Jul-22
|
10:00
|
47.2
|
|
28-Jul-22
|
10:00
|
49.1
|
|
AM5A
|
04-Jul-22
|
10:00
|
47.5
|
39.4-51.5
|
141.1
|
260
|
|
05-Jul-22
|
10:00
|
47.2
|
|
11-Jul-22
|
10:00
|
41.3
|
|
16-Jul-22
|
10:00
|
39.4
|
|
22-Jul-22
|
10:00
|
45.9
|
|
28-Jul-22
|
10:00
|
51.5
|
No exceedance of 1-hour and 24-hour TSP
(Action or Limit Level) was recorded in the reporting period.
The construction noise
monitoring results are summarized in Table 3.3. Graphical plots of the monitoring data and the station set-up as façade
and free-field measurements are shown in Appendix G.
Table 3.3: Summary
of noise monitoring results during normal weekdays
|
Monitoring
Stations
|
Monitoring
Date
|
Start Time
|
End Time
|
Leq
(30 mins) dB(A)
|
Limit Level
for Leq (dB(A))
|
|
NM2A
|
04-Jul-22
|
08:38
|
09:08
|
61.7
|
75
|
|
05-Jul-22
|
14:37
|
15:07
|
61.5
|
|
11-Jul-22
|
08:39
|
09:09
|
61.9
|
|
16-Jul-22
|
14:41
|
15:11
|
61.3
|
|
22-Jul-22
|
08:33
|
09:03
|
62.0
|
|
28-Jul-22
|
14:06
|
14:36
|
61.9
|
|
NM3A
|
04-Jul-22
|
10:08
|
10:38
|
64.8
|
75
|
|
05-Jul-22
|
16:10
|
16:40
|
65.0
|
|
11-Jul-22
|
10:09
|
10:39
|
64.6
|
|
16-Jul-22
|
16:14
|
16:44
|
64.9
|
|
22-Jul-22
|
10:03
|
10:33
|
64.5
|
|
28-Jul-22
|
15:48
|
16:18
|
64.6
|
|
NM4A
|
04-Jul-22
|
10:43
|
11:13
|
63.9
|
70/65^#
|
|
05-Jul-22
|
16:45
|
17:15
|
64.4
|
|
11-Jul-22
|
10:44
|
11:14
|
63.3
|
|
16-Jul-22
|
16:49
|
17:19
|
64.1
|
|
22-Jul-22
|
10:38
|
11:08
|
64.0
|
|
28-Jul-22
|
16:23
|
16:53
|
64.0
|
|
NM5A*
|
04-Jul-22
|
09:28
|
09:58
|
64.1
|
75
|
|
05-Jul-22
|
15:29
|
15:59
|
64.1
|
|
11-Jul-22
|
09:29
|
09:59
|
64.4
|
|
16-Jul-22
|
15:33
|
16:03
|
64.4
|
|
22-Jul-22
|
09:23
|
09:53
|
63.9
|
|
28-Jul-22
|
15:07
|
15:37
|
64.0
|
|
Remarks:
* +3dB (A) correction was applied to
free-field measurement.
^
70 dB(A) for schools and 65 dB(A) during school examination
periods.
# School examination was
conducted on 07 to 08 and 11 to 12 July 2022 in the reporting period.
|
No exceedance of construction noise (Action or Limit Level) was recorded in the reporting
month.
Construction works
were extended to 1900-2300 hours on 04 to 09, 11, 14, 22 and 26 July 2022; and
to holidays 1000-1800 hours on 17 July 2022, 1000-1900 hours on 10, 24 and 31
July 2022 and 1900-2300 hours on 10 July 2022. In accordance with the EM&A
Manual, additional monitoring was carried out during the restricted hours on 04,
05, 10, 11, 17, 22, 24, 26 and 31 July 2022. The Leq
(5 mins) is in the range of 55.6-65.1 dB(A). Construction Noise Permits for the
works carried out during restricted hours were obtained and listed in Table 4.3 and Table 4.4.
Landscape and visual impact inspections were conducted as part of
the weekly site inspections on 07 and 21 July 2022 for Zone 2A and 12 and 27 July
2022 for Zone 2B & 2C during the reporting month. As reviewed by the
registered Landscape Architect, no adverse comment on landscape and visual
aspects was made during these inspections.
The landscape and visual mitigation measures were implemented during
the reporting period. The summary of implementation status of the environmental mitigation
measures is provided in Appendix J.
Construction phase weekly site inspections were carried out on 07, 14,
21 and 28 July 2022 at Zone 2A. The joint site
inspection with IEC, ET, ER and Contractor for Zone 2A was held on 21 July 2022.
All observations have been recorded in the site inspection checklist and passed
to the Contractor together with the appropriate recommended mitigation measures
where necessary.
The key observations from the
site inspections and associated recommendations are summarized in Table 4.1.
Table 4.1: Summary
of Site Inspections and Recommendations for Zone 2A
|
Inspection Date
|
Parameter
|
Observation / Recommendation
|
Contactor’s Responses /
Action(s) Undertaken
|
Close-out (Date)
|
|
07-Jul-22
|
Water Quality
|
Temporary drainage
system shall update with the site condition to divert water to the treatment
facility.
|
The contractor has provided a temporary
drain to divert water to the treatment facility.
|
09-Jul-22
|
|
14-Jul-22
|
Water Quality
|
The contractor shall
set the water pipe longer to divert the site runoff to the nearby pumping
sump pit.
|
The contractor has
set the water pipe longer.
|
15-Jul-22
|
|
21-Jul-22
|
Air Quality
|
The contractor was reminded to replace the
NRMM label with proper colour on the PME at 2A-1.
|
The contractor has replaced the NRMM label
with proper colour on the PME at 2A-1.
|
22-Jul-22
|
|
28-Jul-22
|
Water Quality
|
The contractor was reminded that water in u-channel shall
pump out regularly to ensure proper and efficient operation.
|
The contractor has
removed the water in u-channel.
|
29-Jul-22
|
Construction phase weekly site
inspections were carried out on 05, 12, 20 and 27 July 2022 at Zone 2B &
2C. The joint site inspection with IEC, ET, ER and Contractor for Zone 2B &
2C was held on 12 July 2022. All observations have been recorded in the site
inspection checklist and passed to the Contractor together with the appropriate
recommended mitigation measures where necessary.
The key observations from the site inspections and associated
recommendations are summarized in Table 4.2.
Table 4.2: Summary
of Site Inspections and Recommendations for Zone 2B & 2C
|
Inspection Date
|
Parameter
|
Observation / Recommendation
|
Contactor’s Responses / Action(s) Undertaken
|
Close-out (Date)
|
|
05-Jul-22
|
Noise impact
|
The
contractor was reminded to properly set up the noise barriers to minimize
noise impact to the NSRs.
|
The
contractor has properly set up the noise barriers to minimize noise impact.
|
11-Jul-22
|
|
05-Jul-22
|
Water Quality
|
The
contractor was reminded that idle stockpile of dusty materials shall be fully
covered with tarpaulin or removed off site as far as practicable.
|
The
contractor has removed the idle stockpile from the site.
|
05-Jul-22
|
|
05-Jul-22
|
Water Quality
|
The
contractor was reminded to strengthen the temporary drainage system to direct
storm water to treatment facilities for further treatment.
|
The
contractor has strengthened the temporary drainage system.
|
08-Jul-22
|
|
05-Jul-22
|
Waste Management
|
The
contractor was reminded to clean up the drip tray regularly to avoid overflow
and maintain the capacity of the drip tray is sufficient.
|
The
contractor has cleaned up the drip tray.
|
09-Jul-22
|
|
05-Jul-22
|
Noise impact
|
The
contractor was reminded to close the door of the power pack/generator when
they are in use.
|
The
contractor has closed the door of the power pack/generator.
|
05-Jul-22
|
|
12-Jul-22
|
Noise impact
|
The
contractor was reminded to properly set up the noise barriers to minimize
noise impact to the NSRs.
|
The
contractor has properly set up the noise barriers to minimize noise impact.
|
13-Jul-22
|
|
12-Jul-22
|
Air Quality
|
The
contractor was reminded to improve the dust suppression measures at the
access roads to minimize dust emission.
|
The
contractor has set up auto-sprinkler at the access road.
|
15-Jul-22
|
|
12-Jul-22
|
Noise impact
|
The
contractor was reminded to close the door of the power pack/generator when
they are in use.
|
The
contractor has closed the door of the power pack/generator.
|
12-Jul-22
|
|
12-Jul-22
|
Water Quality
|
The
contractor was reminded that chemicals shall only be stored in designated
areas which have pollution prevention facilities or drip trays with adequate
capacity.
|
The
contractor has removed chemicals to designated area.
|
12-Jul-22
|
|
12-Jul-22
|
Waste Management
|
The
contractor was reminded to carry out waste sorting as far as practicable and
to remove all general refuse to designated landfill facilities regularly.
|
The
contractor has removed general refuse to designated landfill facilities.
|
17-Jul-22
|
|
20-Jul-22
|
Water Quality
|
The
contractor was reminded that idle stockpile of dusty materials shall be fully
covered with tarpaulin or removed off site as far as practicable.
|
The
contractor has removed and covered the idle stockpile from the site.
|
23-Jul-22
|
|
20-Jul-22
|
Noise impact
|
The
contractor was reminded that NRMM label shall be properly displayed and
provided for all regulated machinery on site.
|
The
contractor has provided the NRMM label on the regulated machinery.
|
23-Jul-22
|
|
20-Jul-22
|
Noise impact
|
The
contractor was reminded to close the door of the power pack/generator when
they are in use.
|
The
contractor has closed the door of the power pack/generator.
|
22-Jul-22
|
|
20-Jul-22
|
Water Quality
|
The
contractor was reminded that fuel drums shall only be stored in designated
area which have pollution prevention facilities or drip tray with adequate
capacity.
|
The
contractor has placed with drip tray.
|
22-Jul-22
|
|
20-Jul-22
|
Waste Management
|
The
contractor was reminded to carry out waste sorting as far as practicable and
to remove all general refuse to designated landfill facilities regularly.
|
The
contractor has removed general refuse to designated landfill facilities.
|
26-Jul-22
|
|
20-Jul-22
|
Water Quality
|
The
contractor was reminded to remove deposited silt and grit in the sump pit
regularly to ensure the temporary drainage system can be operated
efficiently.
|
The
contractor has cleaned the sump pit.
|
23-Jul-22
|
|
20-Jul-22
|
Water Quality
|
The
contractor was reminded to strengthen and maintain the sandbags barriers to
prevent any potential stormwater runoff.
|
The
contractor has strengthened and maintained the sandbags barriers
|
23-Jul-22
|
|
20-Jul-22
|
Waste Management
|
The
contractor was reminded to clean up the oil stains on the concrete slab.
|
The
contractor has cleaned the oil stains.
|
23-Jul-22
|
|
27-Jul-22
|
Water Quality
|
The
contractor was reminded that idle stockpile of dusty materials shall be fully
covered with tarpaulin or removed off site as far as practicable.
|
The
contractor has removed the idle stockpile from the site.
|
29-Jul-22
|
|
27-Jul-22
|
Water Quality
|
The
contractor was reminded that stockpile of cement bags (>20 bags) shall be
fully covered with tarpaulin when not in use.
|
The
contractor has covered the cement bags.
|
30-Jul-22
|
|
27-Jul-22
|
Noise impact
|
The
contractor was reminded to properly set up the noise barriers to minimize
noise impact to the NSRs.
|
The
contractor has properly set up the noise barriers to minimize noise impact.
|
30-Jul-22
|
|
27-Jul-22
|
Water Quality
|
The
contractor was reminded that fuel drums shall only be stored in designated
area which have pollution prevention facilities or drip tray with adequate
capacity.
|
The
contractor has removed fuel drums to designated area.
|
30-Jul-22
|
|
27-Jul-22
|
Noise impact
|
The
contractor was reminded to close the door of the power pack/generator when
they are in use.
|
The
contractor has closed the door of the power pack/generator.
|
30-Jul-22
|
The Contractors have been
registered as a chemical waste producer for the Project. Construction and
demolition (C&D) material sorting will be carried out on site. A sufficient number of receptacles were available for
general refuse collection.
As advised by the Zone 2A Contractor, 14.46 tonnes and
11.53 tonnes of inert C&D material
were disposed of as public fill to Tseung Kwan O Area
137 Public Fill and Tuen Mun Area 38 Public Fill
respectively, while 3.84 tonnes of general refuse were disposed of at SENT
landfill respectively. 0.0 tonne of metals, 0.0 tonne of paper/cardboard
packaging, 0.0 tonne of plastics and 0.0 tonne of timber was collected by
recycling contractors in the reporting month. 0.0 tonne of inert C&D
material was reused on site. 0.0 tonne of inert C&D material were reused in
other projects and 0.0 tonne of inert C&D material was imported for reuse
at site in the reporting month. 0.0 tonne of inert C&D material was
disposed to sorting facility and 0.0 tonne of chemical waste was collected by
licensed contractors in the reporting period.
As
advised by the Zone 2B & 2C Contractor,8639.06 tonnes and 11719.08 tonnes
of inert C&D material were disposed of as public fill to Tseung Kwan O Area 137 Public Fill and Tuen Mun Area 38 Public Fill respectively, while 17.43
tonnes of general refuse were disposed of at SENT landfill. 00.00 tonne of
metals, 0.0 tonne of paper/cardboard packaging, 0.0 tonne of plastics and 0.0
tonne of timber was collected by recycling contractors in the reporting month. 3444.43
tonnes of inert C&D material were reused on site. 10214.91 tonnes of inert
C&D material were reused in other projects and 0.0 tonne of inert C&D
material was imported for reuse at site in the reporting month. 0.0 tonne of
inert C&D material was disposed to sorting facility and 0.0 tonne of chemical waste was collected by licensed contractors in the
reporting period.
The cumulative waste generation
records for Zone 2A and Zone 2B & 2C are shown in Appendix I.
The environmental permits,
licenses, and/or notifications on environmental protection for this Project
which were valid during the period are summarised in Table 4.3.
Table 4.3: Status
of Environmental Submissions, Licenses and Permits for Zone 2A
|
Permit
/ License No.
/
Notification /
Reference
No.
|
Valid
Period
|
Status
|
Remarks
|
|
From
|
To
|
|
Chemical
Waste Producer Registration
|
|
WPN5113-256-B2597-01
|
10-Sep-20
|
--
|
Valid
|
--
|
|
Billing
Account Construction Waste Disposal
|
|
7037500
|
09-Jun-20
|
--
|
Account Active
|
--
|
|
Construction
Noise Permit
|
|
GW-RE0432-22
|
11-May-22
|
10-Nov-22
|
Valid
|
Pumping Test
|
|
Wastewater
Discharge License
|
|
WT00037344-2021
|
01-Feb-21
|
28-Feb-26
|
Valid
|
--
|
|
Notification
under Air Pollution Control (Construction Dust) Regulation
|
|
456376
|
21-May-20
|
--
|
Notified
|
--
|
The environmental permits,
licenses, and/or notifications on environmental protection for this Project
which were valid during the period are summarised in Table 4.4.
Table 4.4: Status
of Environmental Submissions, Licenses and Permits for Zone 2B & 2C
|
Permit /
License No.
/
Notification /
Reference
No.
|
Valid Period
|
Status
|
Remarks
|
|
From
|
To
|
|
Chemical
Waste Producer Registration
|
|
WPN5113-256-V2302-01
|
17-Aug-21
|
--
|
Valid
|
--
|
|
Billing
Account Construction Waste Disposal
|
|
7041264
|
11-Aug-21
|
--
|
Account Active
|
--
|
|
Construction
Noise Permit
|
|
GW-RE0596-22
|
22-Jun-22
|
21-Jul-22
|
Valid
|
--
|
|
GW-RE0718-22
|
22-Jul-22
|
21-Sep-22
|
Valid
|
--
|
|
Wastewater Discharge License
|
|
WT00039734-2021
|
25-Nov-21
|
30-Nov-26
|
Valid
|
--
|
|
Notification under Air Pollution Control
(Construction Dust) Regulation
|
|
470022
|
29-Jul-21
|
--
|
Notified
|
--
|
The EM&A programme followed
the recommended mitigation measures in the EM&A Manual. The EM&A
requirements as well as the summary of implementation status of the
environmental mitigation measures are provided in Appendix J. In particular, the following
mitigation measures were brought to attention during the site inspections:
Air Quality
– NRMM
Label with proper colour should be provided for all regulated machinery on
site.
Temporary Water Drainage System
& Water Quality
– The temporary drainage system
should be well managed and updated with the site condition to ensure drainage
facilities efficient operation at all time.
– The
temporary drainage system shall be maintained regularly to ensure efficient
operation.
Air
Quality
– NRMM
Label should be provided for all regulated machinery on site.
Noise Impact
– Noise
barriers should be properly set up to minimize noise impact to NSRs.
Waste Management
–
Chemical wastes should
be properly placed with drip trays/removed to storage area to prevent
chemical spillage.
–
Carry out waste
sorting as far as practicable and remove all general waste to designated
landfill facilities regularly.
Temporary Water Drainage System
& Water Quality
– Idle stockpile of dusty materials
should be fully covered with tarpaulin when not being used or removed from the
site.
– Sandbags
barriers/ water pumps shall be provided on site to direct storm water to water
treatment facilities during rainstorm.
– Temporary
drainage system shall be maintained regularly to ensure efficient operation.
5
Compliance with Environmental Permit
The status
of the required submission under the EP during the reporting period is
summarized in Table 5.1.
Table 5.1: Status of Submissions under the Environmental Permit
|
EP Condition
|
Submission
|
Submission
Date
|
|
Condition 3.4
|
Monthly EM&A Report for June 2022
|
13 July 2022
|
There
was no breach of Action or Limit Levels for Air Quality (1-hour TSP and 24-hour
TSP) and Construction Noise in the reporting month.
Four environmental
complaints were received in the reporting month.
On 15 July 2022, WKCDA has received a complaint referred by the EPD regarding
construction dust pollution generated from WKCD construction site. On 15 July
2022, the complainant claimed that air pollution arose from a large
construction site nearby the Museum Drive, so that the sand scratched the glass
of the vehicles when the residents from The Arch were driving by. The
complainant also mentioned that the construction site consisted of a joint
venture of various engineering companies. According to the description provided
by the complainant, the concerned air pollution issue on 15 July 2022 was not
related to WKCD Zone 2A site. However, some sand on the nearby public road
might be possibly related to Zone 2B & 2C site activities. Thereby, the
concerned sand on the public road might be attributable to Zone 2B & 2C
site activities. In response, prompt actions have been taken by the Contractor
to clean the public road and strengthen the dust control measures on site. In
the meantime, existing mitigation measures (dust suppression measures, regular
cleaning on the public road, wheel washing facility) have been implemented and
properly maintained on Zone 2B & 2C site to avoid nuisance to the public.
Dust monitoring is also regularly conducted at the site boundary with no
exceedance. Nonetheless, the Contractors are recommended to maintain good
practice on site, and strengthen the implementation of dust control measures to
reduce impacts to the nearby neighbors.
On 22 July 2022, WKCDA has received a complaint referred by the EPD
regarding polluted water discharge from WKCD construction site to the public
road. The complainant claimed that "地盤污水流出街 圓方溜冰場對出柯士甸道西西九文化區地盤" (Polluted water flowed out to the street from the WKCD construction site which located at the opposite side to
the Element ice rink.). Investigation at Zone 2A site revealed that the concerned
location was not within the site boundary of Zone 2A site. Thereby, the
complaint might not be attributable to the Zone 2A site. Nevertheless, the
Contractor is recommended to strengthen water pollution mitigation measures on
site to reduce impacts to the public. Investigation at
Zone 2B & 2C site revealed that the concerned water might possibly due
to the water runoff from the vehicles after wheel washing when leaving the
captioned site vehicular gate. The Contractor has been reminded to strengthen
public road cleaning to minimise impacts to the public.
On 26 July 2022, the EPD has received a complaint from a public
regarding polluted water discharge at WKCD construction site and referred the
case on the same day. The complainant claimed that "投訴在藝術公園隔離地盤於下午排放污水" (Polluted water discharged from the construction site next
to the Art Park in the afternoon). Investigation at Zone 2A site revealed that
the concerned location was not within the site boundary of Zone 2A site.
Thereby, the complaint might not be attributable to the Zone 2A site.
Nevertheless, the Contractor is recommended to strictly maintain good site
practices to avoid polluted water flowing into the nearby waterbody. Investigation at Zone 2B & 2C site revealed
that the complaint might not be attributable to WKCD Zone 2B &
2C site. However, the Contractor has been reminded to strictly implement
and maintain good site practices to avoid water pollution to the nearby
waterbody.
On 26 July 2022, the EPD has also received a complaint from a public
regarding polluted water discharge at WKCD construction site and referred the
case on the same day. The complainant claimed that " M+ 藝術館旁邊的地盤非法排放污水" (Illegal discharge of polluted water from the construction site
next to the M+ museum). Investigation at Zone 2A site revealed that the concerned location was
not within the site boundary of Zone 2A site. Thereby, the complaint might not
be attributable to the Zone 2A site. Nevertheless, the Contractor is
recommended to strictly maintain good site practices to avoid polluted water
flowing into the waterbody of Victoria Harbour.
Investigation at Zone 2B & 2C site revealed that the complaint might not be
attributable to WKCD Zone 2B & 2C site. However, the Contractor has been
reminded to strictly implement and maintain good site practices to avoid water
pollution to the nearby waterbody.
The cumulative statistics
on complaints were provided in Appendix K.
No notifications of summons
or successful prosecutions were received this month. The cumulative statistics
on notifications of summons and successful prosecutions were provided in Appendix K.
The major
site works for Zone 2A scheduled to be commissioned in the coming month
include:
Zone 2A-1
● ELS
(Stage 1) – Grouting / Pipe Pile Works
– Stage
2 Grouting
The major site works for Zone 2B
& 2C scheduled to be commissioned in the coming month include:
KD03 (Stage 3-1)
● Bored Pile Works
– RCD Drilling and Excavation
KD04 (Stage 4-1), KD05 (Section 1), KD06 (Section 2), KD07 (Section 3)
● Bored Pile Works
– RCD Drilling, Airlifting, Cage Installation & Concreting and
Excavation
KD08 (Section 4), KD09 (Section 5)
● Bored Pile Works
– RCD Drilling, Airlifting, Cage Installation & Concreting and
Excavation
● Socketed Steel H Piling
Key issues to be considered in
the coming month include:
●
Generation of dust from construction works;
● Noise impact from piling works;
● Generation of site surface
runoffs and wastewater from activities on-site;
● The temporary drainage system
should be well managed and updated with the site condition, particularly on
rainy days;
● Management of stockpiles and
slopes, particularly on rainy days;
● Management of chemicals and
avoidance of oil spillage on-site.
● Sorting, recycling, storage and
disposal of general refuse and construction waste; and
Key issues to be considered in
the coming month include:
● Generation of dust from
construction works;
● Noise impact from piling works;
● Generation of site surface
runoffs and wastewater from activities on-site;
● Management of stockpiles and
slopes, particularly on rainy days;
● Sorting, recycling, storage and
disposal of general refuse and construction waste; and
● Management of chemicals and
avoidance of oil spillage on-site.
The environmental site inspection and environmental
monitoring will be continued in the coming month. Impact monitoring for air
quality and noise
for Zone 2A and Zone 2B & 2C in accordance with the
approved EM&A Manual has commenced since 03 October 2020 and 30 September 2021
respectively. The tentative monitoring schedule for the
coming month is shown in the Appendix E.
The EM&A programme as recommended in the EM&A Manual has
been undertaken with the commencement of the construction activities at Zone 2A
on 03 October 2020, and the major construction works of Zone 2B & 2C
commenced on 30 September 2021.
Monitoring of air quality and noise with respect to the Projects is
underway. In particular, the 1-hour TSP, 24-hour TSP,
noise level (as Leq, 30 minutes) under monitoring have been
checked against established Action and Limit levels. There was no breach of
Action or Limit levels for Air Quality (1-hour TSP and 24-hour TSP) and
Construction Noise in this reporting month.
Four environmental complaints were
recorded in the reporting month. No notifications of summons or successful prosecutions were
received during the reporting month.
Weekly
construction phase site inspections and bi-weekly landscape and visual impact
inspections were conducted during the reporting month as required. It was
observed that the Contractors had implemented all possible and feasible
mitigation measures to mitigate the potential environmental impacts during
construction phase works.
Potential environmental impacts
due to the construction activities, including air quality, noise, water quality, waste, landscape and visual, will
be monitored or reviewed. The recommended environmental mitigation measures
shall be implemented on site and regular inspections as required will be
carried out to ensure that the environmental conditions are acceptable.
