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 3 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 1 to 31 October 2021.
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) in this reporting month.
One Action Level exceedance due to one complaint with no Limit Level
exceedance of construction noise was recorded in the reporting month.
Implementation of
Mitigation Measures
Construction phase weekly site inspections
were carried out on 07, 15, 21 and 28 October 2021
for Foundation, Excavation and Lateral Support Works in Zone 2A and on 05, 12,
19 and 26 October 2021 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.
EPD inspection was conducted at Zone 2A and Zone 2B & 2C on 18
October 2021.
Record of Complaints
Two 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
–
King Post & Erection of Steel Column for
Working Platform
●
Socketed H-Pile Works
–
Remaining Socket H-Pile Works
●
Bored Pile Works
–
Bored Pile Construction
Zone 2A-2
●
Bored Pile Works
– Additional
Bored Pile Construction
●
ELS (Stage 1) – Grouting / Pipe
Pile Works
–
King Post
–
Stage 1a & 1b Grouting
–
Pipe Pile Construction
The major
site works for Zone 2B & 2C scheduled to be commissioned in the coming
month include:
Stage
(1-1), Stage (3-1)
● Bored Pile Works
– Predrilling
Stage (4-1)
● Bored Pile Works
– Bored Piling
Section 1
● Bored Pile Works
– Bored Piling
Section 3
● Bored Pile Works
– Predrilling
– Bored Piling
Section 4
● Bored Pile Works
– Predrilling
Section 5
● Bored Pile Works
– Bored 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 3 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 1 to 31 October 2021. 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
–
King Post & Erection of Steel Column for
Working Platform
●
Socketed H-Pile Works
–
Remaining Socketed H-Pile Works
●
Bored Pile Works
–
Bored Pile Construction
Zone 2A-2
●
Bored Pile Works
– Additional
Bored Pile Construction
●
ELS (Stage 1) – Grouting / Pipe
Pile Works
–
King Post
–
Stage 1a & 1b Grouting
–
Pipe Pile Construction
During the reporting period, construction
works at Zone 2B & 2C undertaken include:
Section 1
Stage (4-1)
●
Bored Pile Works
–
Predrilling
Section 1, Section 2, Section 3, Section 4, Section
5
●
Bored Pile Works
–
Predrilling
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 4.2 and Table 4.3 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,
304718)
|
Pulsar 100B (Serial No.: 039507)
|
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-Oct-21
|
8:01
|
69
|
71
|
66
|
35-75
|
280.4
|
500
|
|
11-Oct-21**
|
14:02
|
57
|
57
|
51
|
|
15-Oct-21
|
8:03
|
35
|
40
|
39
|
|
21-Oct-21
|
14:05
|
57
|
52
|
53
|
|
27-Oct-21
|
8:04
|
74
|
75
|
75
|
|
AM4A
|
04-Oct-21
|
8:09
|
71
|
75
|
66
|
36-80
|
278.5
|
500
|
|
11-Oct-21**
|
14:10
|
59
|
56
|
58
|
|
15-Oct-21
|
8:11
|
44
|
36
|
41
|
|
21-Oct-21
|
14:13
|
50
|
49
|
58
|
|
27-Oct-21
|
8:12
|
71
|
80
|
76
|
|
AM5A
|
04-Oct-21
|
8:24
|
70
|
70
|
72
|
41-79
|
275.4
|
500
|
|
11-Oct-21**
|
14:27
|
53
|
53
|
53
|
|
15-Oct-21
|
8:26
|
42
|
42
|
41
|
|
21-Oct-21
|
14:30
|
52
|
57
|
53
|
|
27-Oct-21
|
8:27
|
79
|
75
|
72
|
|
Remarks:
** Impact monitoring on 9 October has
rescheduled to 11 October due to Tropical Cyclone Warning Signal No.8.
|
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-Oct-21
|
10:00
|
71.0
|
37.0-71.0
|
152.4
|
260
|
|
11-Oct-21**
|
10:00
|
49.5
|
|
15-Oct-21
|
10:00
|
37.0
|
|
21-Oct-21
|
10:00
|
51.6
|
|
27-Oct-21
|
10:00
|
70.6
|
|
AM4A
|
04-Oct-21
|
10:00
|
65.0
|
37.1-70.2
|
152.6
|
260
|
|
11-Oct-21**
|
10:00
|
55.9
|
|
15-Oct-21
|
10:00
|
37.1
|
|
21-Oct-21
|
10:00
|
49.0
|
|
27-Oct-21
|
10:00
|
70.2
|
|
AM5A
|
04-Oct-21
|
10:00
|
69.2
|
41.2-69.2
|
141.1
|
260
|
|
11-Oct-21**
|
10:00
|
49.5
|
|
15-Oct-21
|
10:00
|
41.2
|
|
21-Oct-21
|
10:00
|
50.7
|
|
27-Oct-21
|
10:00
|
67.5
|
|
Remarks:
** Impact monitoring on 9 October has
rescheduled to 11 October due to Tropical Cyclone Warning Signal No.8.
|
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-Oct-21
|
08:31
|
09:01
|
57.8
|
75
|
|
11-Oct-21**
|
14:32
|
15:02
|
58.1
|
|
15-Oct-21
|
08:33
|
09:03
|
58.3
|
|
21-Oct-21
|
14:35
|
15:05
|
58.1
|
|
27-Oct-21
|
08:34
|
09:04
|
57.9
|
|
NM3A
|
04-Oct-21
|
10:01
|
10:31
|
69.9
|
75
|
|
11-Oct-21**
|
16:05
|
16:35
|
69.3
|
|
15-Oct-21
|
10:03
|
10:33
|
69.5
|
|
21-Oct-21
|
16:08
|
16:38
|
70.3
|
|
27-Oct-21
|
10:04
|
10:34
|
69.0
|
|
NM4A
|
04-Oct-21
|
10:36
|
11:06
|
68.3
|
70/65^#
|
|
11-Oct-21**
|
16:40
|
17:10
|
67.8
|
|
15-Oct-21
|
10:38
|
11:08
|
68.2
|
|
21-Oct-21
|
16:43
|
17:13
|
68.2
|
|
27-Oct-21
|
10:39
|
11:09
|
68.1
|
|
NM5A*
|
04-Oct-21
|
09:21
|
09:51
|
65.3
|
75
|
|
11-Oct-21**
|
15:24
|
15:54
|
66.3
|
|
15-Oct-21
|
09:23
|
09:53
|
65.6
|
|
21-Oct-21
|
15:27
|
15:57
|
65.7
|
|
27-Oct-21
|
09:24
|
09:54
|
66.4
|
|
Remarks:
* +3dB (A) correction was applied to
free-field measurement.
^
70 dB(A) for schools and 65 dB(A) during school examination
periods.
# No School examination was conducted on the date of monitoring in the reporting
period.
** Impact monitoring on 9 October has
rescheduled to 11 October due to Tropical Cyclone Warning Signal No.8.
|
One Action Level exceedance due to one complaint with no Limit Level
exceedance of construction noise was recorded in the reporting month.
School examination was
conducted on 22 and 25 October during the reporting period, additional
monitoring was carried out at NM4A on the examination date and the Leq (30 mins) is in the range of 64.3 to 64.6
dB(A).
Construction works
were extended to 1900-2110 hours on 25 October 2021. In accordance with the
EM&A Manual, additional monitoring was carried out during the restricted
hours on 25 October 2021. The Leq (5 mins)
is in the range of 55.5-63.9 dB(A). Construction Noise Permits for the works
carried out during restricted hours were obtained and listed in Table 4.2.
Landscape and visual impact inspections were conducted as part of
the weekly site inspections on 15 and 28 October 2021 for Zone 2A and 5 and 19
October 2021 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, 15,
21 and 28 October 2021 at Zone 2A. The joint site
inspection with IEC, ET, ER and Contractor for Zone 2A was held on 21 October
2021. All observations have been recorded in the site inspection checklist and
passed to the Contractor together with the appropriate recommended mitigation
measures where necessary.
EPD inspection was conducted on
18 Oct 2021 at Zone 2A site. No adverse comments or prosecution was given.
Verbal reminder from EPD inspector that concrete bump with u-channel should be
set up at the area in front of DG storage in order to serve as a buffer to
prevent the leakage of construction runoff from site boundary.
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-Oct-21
|
Air Quality
|
The contractor was reminded that the idle
stockpile shall be fully covered/ removed from site.
|
The contractor has fully covered the stockpile
with tarpaulin.
|
07-Oct-21
|
|
07-Oct-21
|
Water Quality
|
The contractor was reminded that the diesel
container shall be properly labelled and covered.
|
The contractor has
properly labelled and covered the diesel container.
|
08-Oct-21
|
|
15-Oct-21
|
Water Quality
|
The contractor was reminded the bottom of the
hoarding shall properly seal to avoid muddy water leakage from the site.
|
The contractor has
properly sealed the bottom of the hoarding to avoid muddy water leakage from
the site.
|
16-Oct-21
|
|
21-Oct-21
|
Air Quality
|
The contractor was reminded to provide water
spray frequently on main haul road.
|
The contractor has provided water spray frequently on main
haul road.
|
21-Oct-21
|
|
21-Oct-21
|
Water Quality
|
The contractor was reminded that the silt and sand at
the trenches near the wheel washing facility should be remove regularly.
|
The contractor has
removed the silt and sand at the trenches near the
wheel washing facility.
|
23-Oct-21
|
|
28-Oct-21
|
Water Quality
|
The contractor was reminded to provide cleaning
for the u-channel regularly.
|
The contractor has provided cleaning for the u-channel.
|
30-Oct-21
|
|
28-Oct-21
|
Air Quality
|
The contractor was reminded that the idle
stockpile shall be fully covered/ removed from site.
|
The contractor has removed the idle
stockpile on site.
|
29-Oct-21
|
Construction phase weekly site
inspections were carried out on 05, 12, 19 and 26 October 2021 at Zone2B &
2C. The joint site inspection with IEC, ET, ER and Contractor for Zone 2B &
2C was held on 19 October 2021. All observations have been recorded in the site
inspection checklist and passed to the Contractor together with the appropriate
recommended mitigation measures where necessary.
EPD inspection was carried out on 18 October 2021 at WEK box of Zone 2B
& 2C site. The EPD inspectors focus on dust and water issue and advised to
maintain dust suppressing control on site haul road and prevent construction
water from running into the sea. No adverse comments or prosecution was given.
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)
|
|
12-Oct-21
|
Water Quality
|
The contractor was reminded to add water pumps along site boundary and soakaway pit
as precautions of rainstorms.
|
The
contractor has added water pumps along site boundary and soakaway pit.
|
12-Oct-21
|
|
12-Oct-21
|
Noise
|
The
contractor was reminded to install noise barrier properly to minimise noise impact to NSRs.
|
The contractor has installed
noise barrier properly to minimise noise impact.
|
19-Oct-21
|
|
19-Oct-21
|
Water Quality
|
The
contractor was reminded to set up the temporary drainage system (set-up
sedimentation tanks for treatment plant) as soon as possible, s.
|
The
Contractor has set-up sedimentation tanks for the treatment
plants.
|
24-Oct-2021
|
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, 113.05
tonnes and 2045.11 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 13.30 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. 0.32 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 0.20 tonnes of chemical waste was
collected by licensed contractors in the reporting period.
As
advised by the Zone 2B & 2C Contractor, 22.58 tonnes of inert C&D
material were disposed of, while 13.19 tonnes of general refuse were disposed
of respectively. 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. 37.75 tonnes of inert C&D material was reused on site. 0.0 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 4.2.
Table 4.2: 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-RE-0627-21
|
11-Jul-21
|
10-Nov-21
|
Valid
|
Piling Works
|
|
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
|
--
|
|
Permit
to Dump Material at sea under Dumping at Sea Ordinance
|
|
461895
|
--
|
--
|
Under EPD Approval
|
--
|
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 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
|
|
--
|
--
|
--
|
--
|
--
|
|
Wastewater
Discharge License
|
|
470024
|
-
|
-
|
Under EPD Approval
|
--
|
|
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
– Idle
stockpile should be fully covered when not in use or removed from the site.
– Water
spray should provide regularly at unpaved part of road to keep the road surface
wet.
Temporary
Water Drainage System & Water Quality
– The temporary drainage system should be well managed and updated
with the site condition.
– Silt and sand at the trenches near the wheel
washing facility should remove regularly to ensure the continued efficiency of
the process.
– The
chemical containers should properly label and store
properly to ensure no chemical leakage.
– The bottom
of the hoarding should properly seal to avoid muddy water leakage from the site.
Noise
– Noise
barrier should be set-up properly to minimise noise impact to NSRs.
Temporary
Water Drainage System & Water Quality
– Water
pumps along site boundary and soakaway pit shall be set-up as precautions of
rainstorms.
– The temporary drainage system should be set up as soon as possible,
including to set-up sedimentation tanks for treatment plants.
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 September 2021
|
12 October 2021
|
There was no breach of
Action or Limit Levels for Air Quality (1-hour TSP and 24-hour TSP) in the
reporting month.
One Action Level exceedance
due to one complaint with no Limit Level exceedance of construction noise was
recorded in the reporting month.
6.2
Record on Environmental
Complaints Received
Two environmental
complaints were received in the reporting month.
On 12 October 2021, West
Kowloon Cultural District Authority (WKCDA) has received a complaint from
Environmental Protection Department (EPD). Refer to photos provided by the complainant, water discharge was spotted at the waterbody of
Victoria Harbour near WKCD construction site on 8 October 2021. Reminder was
given by EPD to the main contractors of the WKCD construction sites to take all
necessary measures to prevent water discharging from the construction sites
into the nearby marine water. After carrying out the investigation
with the contractors, on 8 October 2021, existing
mitigation measures were properly maintained on both Zone 2A and Zone 2B &
2C sites. However, due to the extreme weather condition on 08 October 2021, it
might be possible that rainwater from upper stream of adjacent sites has
breached through the sandbags system next to the seafront. The other possible
source is the upper stream water from the stormwater outlet near the pier of Tsim Sha Tsui Fire Station at the
Victoria Harbor. Thereby, the complaint might be
possibly attributable to Zone 2 sites. Subsequently, prompt actions have been
taken to improve the seafront site boundary, and avoid surface water leakage
from the site during the following typhoon – Kompasu.
Nonetheless, the Contractors are recommended to strictly maintain good site
practices to avoid surface water flowing into to the waterbody of Victoria
Harbour.
On 27 October 2021, West
Kowloon Cultural District Authority (WKCDA) has received a complaint from
Environmental Protection Department (EPD). As shown in the video and photos
taken around 9pm on 25 October 2021, construction activity was found at WKCD
Zone 2A site. The complainant has also expressed concern about the construction
noise generated from 9am to 9pm even on Sunday. Investigation result reveal
that the noise source might be possibly from the mobile crane and generator
operation for pile extraction works in WKCD Zone 2A site. However, the mobile
crane and generator have been labelled as QPME by EPD. During the construction
works in nighttime (i.e. 19:00 to 21:00) on 25
October 2021, only one single group of PME was used and the work process fully
complied with permitted time. In addition, noise mitigation measures have
already been implemented and properly maintained on site. No construction work
was conducted after permitted time (i.e. 23:00) on 25 October 2021 in WKCD Zone
2A site. On the other hand, no construction work was carried out in nighttime in Zone 2B & 2C site and Sundays in Zone 2A,
2B & 2C site in October 2021. Moreover, noise measurement and monitoring
were carried out with no exceedance. Nonetheless, the Contractors are
recommended to maintain good practice on site, and strengthen the
implementation of noise mitigation measures to reduce impacts to the neighbors
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
– King
Post & Erection of Steel Column for Working Platform
● Socketed H-Pile Works
– Remaining Socket H-Pile Works
● Bored Pile Works
– Bored Pile Construction
Zone 2A-2
● Bored Pile Works
–
Additional Bored Pile Construction
● ELS (Stage 1) – Grouting / Pipe Pile Works
– King
Post
– Stage
1a & 1b Grouting
– Pipe
Pile Construction
The major site works for Zone 2B
& 2C scheduled to be commissioned in the coming month include:
Stage (1-1), Stage (3-1)
● Bored Pile Works
– Predrilling
Stage (4-1)
● Bored Pile Works
– Bored Piling
Section 1
● Bored Pile Works
– Bored Piling
Section 3
● Bored Pile Works
– Predrilling
– Bored Piling
Section 4
● Bored Pile Works
– Predrilling
Section
5
● Bored Pile Works
– Bored 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 3 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 3 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) in this
reporting month. One Action Level exceedance due to one complaint with no Limit Level
exceedance of construction noise was recorded in the reporting month.
Two 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.
