Central Kowloon Route
– Kai Tak West (CKR-KTW; Contract No. HY/2014/07) (hereafter called “the
Project”) covers part of the construction of the Central Kowloon Route (CKR).
The Project comprises
the follow works:
·
50x30m access shaft with noise enclosure
at Ma Tau Kok (MTK);
·
100m long cut-and-cover (C&C) tunnel
at MTK;
·
Demolition and re-provisioning of MTK
Public Pier;
·
160m long underwater tunnel (UWT) (Stage
1);
·
210m long UWT (Stage 2);
·
60m long C&C tunnel at Kai Tak;
·
130m long depressed road and 200m long
underpass at Kai Tak;
·
390m long underground tunnel ventilation
adit at Kai Tak;
·
Seawall demolition and construction of new
landing steps; and
·
Barging Point enclosure and conveyor
system.
The EM&A programme commenced on 4 April 2018.The impact EM&A for the Project includes air
quality and noise monitoring.
This is the sixteenth
monthly EM&A Report presenting the EM&A works carried out during the
period between 1 and 31 July 2019. As informed by the Contractor, major
activities in the reporting period were:
|
Locations
|
Site Activities
|
|
Kai Tak
|
·
Pipe piling
·
Pre-drill works
·
Socket H-pile installation
·
Watermain diversion
·
Construction of ventilation adit
·
Construction of at-grade road and associated backfilling
works
·
ELS removal at ventilation adit
|
|
Ma Tau Kok
|
·
Temporary Traffic Management implementation
·
Project signboard construction
·
Pipe piling works
·
Soft excavation
·
ELS installation & decking works for access shaft
·
Existing drainage diversion works
·
Fresh water pipe installation works
·
Excavation works for landing steps
|
|
Kowloon Bay
|
·
Pipe pile construction
·
Wall tie installation and temporary reclamation for stage 1
|
|
Barging Point
|
·
Barging point operation
|
Breaches
of Action and Limit Levels for Air Quality
All 24-hour TSP result was below the Action and Limit Levels at all
monitoring locations in the reporting month.
All 1-hour TSP result was below the Action and Limit Levels at all
monitoring locations in the reporting month.
Breaches
of Action and Limit Levels for Noise
Regular Noise Monitoring
No
Action Level exceedance was recorded since no noise related complaint was
received in the reporting month.
No
exceedance of Limit Level of noise was recorded in the reporting month.
Complaint,
Notification of Summons and Successful Prosecution
One
(1) complaint (received by Environmental Protection Department on 23 July 2019)
was referred by the Contractor on 25 July 2019, the investigation report for
the complaint was finalized on 31 July 2019.
No notification of summons
and successful prosecution were received in the reporting month.
Reporting
Changes
There was no
reporting change in the reporting month.
Future
Key Issues
Key issues to be
considered in the next three months included:
|
Locations
|
Site Activities
|
|
Kai Tak
|
·
Pipe piling
·
Pre-drill works,
·
Socket H-pile installation
·
Watermain diversion
·
Construction of ventilation adit
·
Construction of at-grade road and associated backfilling
works
·
ELS removal at ventilation adit
·
Excavation and ELS installation at cut & cover tunnel
·
Depressed road and underpass
|
|
Ma Tau Kok
|
·
Temporary Traffic Management implementation
·
Project signboard construction
·
Soft and rock excavation
·
ELS installation & decking works for access shaft
·
Pipe piling works for cut and cover tunnel
·
Existing drainage diversion works
·
Fresh water pipe installation works
·
Excavation works for landing steps
|
|
Kowloon Bay
|
·
Pipe pile construction
·
Wall tie installation and temporary reclamation for stage 1
temporary reclamation
·
Excavation for stage 1 underwater tunnel
·
Construct cradle
·
K-frame tower and sliding system
·
Truss installation
|
|
Barging Point
|
·
Barging point operation
|
Potential environmental impacts arising from the above construction
activities are mainly associated with construction
dust, construction noise, water
pollution control, and waste management.
Gammon Construction Limited was commissioned
by the Highways Department as the Civil Contractor for Works Contract HY/2014/07.
AECOM Asia Company Limited (AECOM) was appointed by Gammon Construction Limited
as the Environmental Team (ET) to undertake the Environmental Monitoring and
Audit (EM&A) programme during construction phase of the Project.
1.1.1
This is the sixteenth monthly
EM&A Report which summaries the impact monitoring results and audit findings
for the Project during the reporting period between 1 and 31 July 2019.
1.2.1
This monthly EM&A
Report is organized as follows:
·
Section 1: Introduction
·
Section 2: Project Information
·
Section 3: Environmental Monitoring
Requirement
·
Section 4: Implementation Status of
Environmental Mitigation Measures
·
Section 5: Monitoring Results
·
Section 6: Environmental Site Inspection
and Audit
·
Section 7: Environmental
Non-conformance
·
Section 8: Future Key Issues
·
Section 9: Conclusions and Recommendations
2.1.1
CKR
is a dual 3-lane trunk road across central Kowloon linking the West Kowloon in
the west and the Kai Tak Development (KTD) in the east. The CKR will be about
4.7 km long with an underground tunnel section of about 3.9 km long, in
particular, there will be an underwater tunnel of about 370 m long in Kowloon
Bay to the north of the To Kwa Wan Typhoon Shelter. It will connect the West
Kowloon Highway at Yau Ma Tei Interchange with the road network at Kowloon Bay
and the future Trunk Road T2 at KTD which will connect to the future Tseung
Kwan O – Lam Tin Tunnel (TKO-LTT) and Cross Bay Link (CBL). CKR, Trunk Road T2
and TKO-LTT will form a strategic highway link, namely Route 6, connecting West
Kowloon and Tseung Kwan O. In addition, 3 ventilation buildings, which will be
located in Ya Ma Tei, Ho Man Tin and ex-Kai Tak airport area, are proposed to
ensure acceptable air quality within the tunnel.
2.1.2
The
Environmental Impact Assessment (EIA) Report for Central
Kowloon Route (Register No.: AEIAR-171/2013) was approved on 11 July
2013 under the Environmental Impact Assessment Ordinance (EIAO). Following the
approval of the EIA Report, an Environmental Permit (EP) for CKR was granted on
9 August 2013 (EP No.: EP- 457/2013) for the construction and operation. Variation
of EP (VEP) was subsequently applied and the latest EP (EP No. EP-457/2013/C)
was issued by the Director of Environmental Protection (DEP) on 16 January 2017.
Further Environmental Permit (EP No.
FEP-01/457/2013/C) for CKR – Kai Tak West was issued on 28 February 2018.
2.1.3
The construction of the CKR had been divided
into different sections. This Work Contract HY/2014/07 – Kai Tak West (KTW)
(“The Project”) will include a road which is a trunk road, including new roads, and major
extensions or improvements to existing roads; a road fully enclosed by decking
above and by structure on the sides for more than 100 m; and reclamation works
(including associated dredging works) more than 1 ha in size and a boundary of
which is less than 100 m from an existing residential area.
2.1.4
The
site layout plan of the Project is shown in Figure 1.1.
2.2.1
The
major construction activities under this Project include:
(a) construction of approximately 160m long cut-and-cover tunnel and
370m long underwater tunnel between the tunnel section at Ma Tau Kok and the
depressed road of the CKR within Kai Tak Development;
(b) reconstruction of the seawall at Ma Tau Kok public pier, and the
sloping seawall at the Former Kai Tak Airport Runway;
(c) construction of approximately 125m long depressed road and 200m
long underpass of the CKR within Kai Tak Development;
(d) construction of approximately 360m long underground tunnel
ventilation adit of the CKR;
(e) reconstruction of Kowloon City Ferry Pier Public Transport
Interchange; and
(f) other associated works.
2.3.1
The
major construction activities undertaken in the reporting month are summarized in
Table 2.1.
Table 2.1 Construction Activities in the reporting month
|
Locations
|
Site Activities
|
|
Kai
Tak
|
·
Pipe piling
·
Pre-drill works
·
Socket H-pile installation
·
Watermain diversion
·
Construction of ventilation adit
·
Construction of at-grade road and associated backfilling
works
·
ELS removal at ventilation adit
|
|
Ma
Tau Kok
|
·
Temporary Traffic Management implementation
·
Project signboard construction
·
Pipe piling works
·
Soft excavation
·
ELS installation & decking works for access shaft
·
Existing drainage diversion works
·
Fresh water pipe installation works
·
Excavation works for landing steps
|
|
Kowloon
Bay
|
·
Pipe pile construction
·
Wall tie installation and temporary reclamation for stage 1
|
|
Barging
Point
|
·
Barging point operation
|
2.3.2
The construction programme is presented in Appendix A.
2.4.1
The project
organization structure is shown in Appendix B. The key personnel
contact names and numbers for the Project are summarized in Table 2.2.
Table 2.2 Contact Information of Key Personnel
|
Party
|
Role
|
Position
|
Name
|
Telephone
|
Fax
|
|
Arup-Mott
MacDonald Joint Venture
|
Residential
Engineer (ER)
|
Engineer’s
Representative
|
Mr.
Jeffrey Lau
|
2268 3640
|
2268 3954
|
|
ERM
|
Independent
Environmental Checker (IEC)
|
Independent
Environmental Checker
|
Ms. Mandy To
|
2271 3313
|
2723 5660
|
|
Gammon
|
Contractor
|
Contracts Manager
|
Mr. Alan Yan
|
2516 8823
|
2516 6260
|
|
Environmental Manager
|
Ms Michelle Tang
|
9267 8866
|
2516 6260
|
|
Environmental Officer
|
Ms. Phoebe Ng
|
9869 1105
|
|
AECOM
|
Contractor’s
Environmental Team (ET)
|
ET Leader
|
Mr. Y T Tang
|
3922 9392
|
2317 7609
|
2.5.1 Relevant
environmental licenses, permits and/or notifications on environmental protection
for this Project and valid in the reporting month are summarized in Table 2.3.
Table 2.3 Status of Environmental Licenses, Notifications and Permits
|
Permit / License No. / Notification/
Reference No.
|
Valid Period
|
Status
|
Remarks
|
|
From
|
To
|
|
Further Environmental
Permit
|
|
FEP-01/457/2013/C
|
28 Feb 2018
|
End of Project
|
Valid
|
--
|
|
Wastewater
Discharge License
|
|
WT00030290-2018
|
22 Mar 2018
|
31 May 2023
|
Valid
|
Ma Tau Kok
|
|
WT00030668-2018
|
27 Apr 2018
|
30 Apr 2023
|
Valid
|
Site Office at
Kai Tak West
|
|
WT00030358-2018
|
27 Apr 2018
|
30 Apr 2023
|
Valid
|
Kai Tak West
|
|
WT00030333-2018
|
27 Apr 2018
|
30 Apr 2023
|
Valid
|
Barging Point
at Portions 4B & 4C
|
|
WT00030330-2018
|
27 Apr 2018
|
30 Apr 2023
|
Valid
|
Kowloon Bay
|
|
Construction
Noise Permit
|
|
PP-RE0021-19
|
20 May 2019
|
15 Nov 2019
|
Valid
|
Percussive
Piling at Stage 1 Temporary Reclamation Area
|
|
GW-RE0125-19
|
28 Feb 2019
|
27 Aug 2019
|
Valid
|
Barging Point
Operation at Kai Tak Barging Point
|
|
GW-RE0134-19
|
7 Mar 2019
|
6 Sep 2019
|
Valid
|
Pumping Test
and System at Ma Tau Kok
|
|
GW-RE0345-19
|
6 May 2019
|
05 Jul 2019
|
Valid until 05
Jul 2019
|
General Works
at Kai Tak
|
|
GW-RS0524-19
|
05 Jul 2019
|
29 Sep 2019
|
Valid on 05
Jul 2019
|
General Works
at Kai Tak
|
|
GW-RE0595-19
|
30 Jul 2019
|
29 Sep 2019
|
Valid on 30
Jul 2019
|
Welding and
backfilling at Stage 1 Underwater Tunnel
|
|
PP-RE0010-19
|
1 Apr 2019
|
30 Sep 2019
|
Valid
|
Percussive
Piling at Kai Tak Area (at grade road and underpass)
|
|
Chemical Waste Producer Registration
|
|
5118-247-G2347-47
|
30 Jan 2018
|
End of Project
|
Valid
|
--
|
|
5118-247-G2347-48
|
30 Jan 2018
|
End of Project
|
Valid
|
--
|
|
Marine Dumping Permit
|
|
--
|
--
|
--
|
--
|
--
|
|
Billing
Account for Construction Waste Disposal
|
|
7029909
|
22 Jan 2018
|
End of Project
|
Account Active
|
--
|
|
7031949
|
3 Jul 2019
|
4 Oct 2019
|
Account Active
(Renewed on 3 Jul 2019)
|
Billing Account for Disposal of
Construction Waste (by vessels)
|
|
Notification
Under Air Pollution Control (Construction Dust) Regulation
|
|
429442
|
5 Jan 2018
|
5 Jul 2025
|
Notified
|
--
|
Monitoring Requirements
3.1.1 In accordance with
the approved EM&A Manual, measurement of 24-hour and 1-hour Total Suspended
Particulates (TSP) level at the designated air quality monitoring station is
required. Impact 24-hour TSP monitoring should be
carried out for at least once every 6 days, and 1-hour
TSP monitoring should be done at least 3 times every 6 days while the highest
dust impact is expected. The Action and Limit Levels of the air quality
monitoring is provided in Appendix D.
Monitoring Equipment
3.1.2 24-hour TSP air quality monitoring was performed
using High Volume Sampler (HVS) located at the designated monitoring station.
The HVS meets all the requirements of the EM&A Manual.
3.1.3 A portable direct reading dust meter was used to
carry out the 1-hour TSP monitoring.
3.1.4 Brand and model of the equipment is given in Table 3.1.
Table 3.1 Air Quality Monitoring
Equipment
Monitoring Locations
3.1.5
The
monitoring station for construction dust monitoring pertinent to the Project
has been identified based on the approved EM&A Manual for the Project. The
location of the construction dust monitoring station is summarized in Table 3.2 and
shown in Figure 3.1.
Table 3.2 Location of Construction
Dust Monitoring Station
|
Location
|
Monitoring Station
|
Description
|
|
E-A14a
[1]
|
Block
B of Merit Industrial Centre
|
Rooftop
(13/F)
|
Note:
[1] The air monitoring station proposed in the
EM&A Manual (i.e. Wyler Gardens with ID: E-A14) was not available for
impact dust monitoring, therefore impact monitoring was conducted at E-A14a as
an alternative which was agreed by the ER, IEC and EPD.
Monitoring
Methodology
3.1.6 24-hour
TSP Monitoring
(a)
The HVS was
installed in the vicinity of the air sensitive receivers. The following criteria were considered in the
installation of the
HVS as far as practicable:-
(i)
A horizontal platform with
appropriate support to secure the sampler against gusty wind was provided.
(ii)
Two samplers should
not be placed less than 2m apart from each other;
(iii)
The distance between the HVS and
any obstacles, such as buildings, was at least twice the height that the
obstacle protrudes above the HVS.
(iv)
A minimum of 2 meters separation
from walls, parapets and penthouse for rooftop sampler.
(v)
A minimum of 2 meters separation
from any supporting structure, measured horizontally is required.
(vi)
No furnace or incinerator flues
nearby.
(vii)
Airflow around the sampler was
unrestricted.
(viii)
The sampler was located more than
20 meters from any dripline.
(ix)
Any wire fence and gate, required
to protect the sampler, did not obstruct the monitoring process.
(x)
Permission was obtained to set up
the samplers and access to the monitoring station.
(xi)
A secured supply of electricity
was obtained to operate the sampler.
(b)
Preparation of
Filter Papers
(i)
Glass fibre filters, G810 were
labelled and sufficient filters that were clean and without pinholes were
selected.
(ii)
All filters were equilibrated in
the conditioning environment for 24 hours before weighing. The conditioning
environment temperature was around 25 °C and not variable by more than ±3 °C;
the relative humidity (RH) was < 50% and not variable by more than ±5%. A
convenient working RH was 40%.
(iii)
All filter papers were prepared
and analysed by ALS Technichem (HK) Pty
Ltd., which is a HOKLAS accredited laboratory and has
comprehensive quality assurance and quality control programmes.
(c)
Field
Monitoring
(i)
The power supply was checked to ensure the HVS works properly.
(ii)
The filter holder and the area
surrounding the filter were cleaned.
(iii)
The filter holder was removed by
loosening the four bolts and a new filter, with stamped number upward, on a
supporting screen was aligned carefully.
(iv)
The filter was properly aligned
on the screen so that the gasket formed an airtight seal on the outer edges of
the filter.
(v)
The swing bolts were fastened to
hold the filter holder down to the frame. The pressure applied was sufficient to avoid
air leakage at the edges.
(vi)
Then the shelter lid was closed
and was secured with the aluminium strip.
(vii)
The HVS was warmed-up for about 5
minutes to establish run-temperature conditions.
(viii)
A new flow rate record sheet was
set into the flow recorder.
(ix)
On site temperature and
atmospheric pressure readings were taken and the flow rate of the HVS was
checked and adjusted at around 1.3 m3/min, and complied with the
range specified in the EM&A Manual (i.e. 0.6-1.7 m3/min).
(x)
The programmable digital timer
was set for a sampling period of 24 hrs, and the starting time, weather
condition and the filter number were recorded.
(xi)
The initial elapsed time was
recorded.
(xii)
At the end of sampling, on site
temperature and atmospheric pressure readings were taken and the final flow
rate of the HVS was checked and recorded.
(xiii)
The final elapsed time was
recorded.
(xiv)
The sampled filter was removed
carefully and folded in half length so that only surfaces with collected
particulate matter were in contact.
(xv)
It was then placed in a clean
envelope and sealed.
(xvi)
All monitoring information was
recorded on a standard data sheet.
(xvii) Filters were then sent to ALS Technichem
(HK) Pty Ltd. for analysis.
(d)
Maintenance and
Calibration
(i)
The HVS and its accessories were maintained in good working condition, such as
replacing motor brushes routinely and checking electrical wiring to ensure a
continuous power supply.
(ii)
HVSs were calibrated using
TE-5025A Calibration Kit upon installation and thereafter at bi-monthly
intervals.
(iii)
Calibration certificate of the TE-5025A Calibration Kit and the HVSs are provided in Appendix E.
3.1.7 1-hour
TSP Monitoring
(a)
Measuring Procedures
The measuring procedures of the 1-hour dust
meter are in accordance with the Manufacturer’s Instruction Manual as follows:
(i)
Turn the power on.
(ii)
Close the air collecting opening cover.
(iii)
Push the “TIME SETTING” switch to [BG]
(iv)
Push “START/STOP”
switch to perform background measurement for 6 seconds.
(v)
Turn the knob at SENSI ADJ position to insert
the light scattering plate.
(vi)
Leave the equipment for 1 minute upon “SPAN
CHECK” is indicated in the display.
(vii)
Push “START/STOP” switch to perform automatic
sensitivity adjustment. This measurement takes 1 minute.
(viii)
Pull out the knob and return it to MEASURE
position.
(ix)
Push the “TIME SETTING” switch the time set
in the display to 3 hours.
(x)
Lower down the air collection opening cover.
(xi)
Push “START/STOP” switch to start
measurement.
(b)
Maintenance and Calibration
(i)
The 1-hour TSP meter was
calibrated at 1-year intervals against a continuous particulate TEOM Monitor,
Series 1400ab. Calibration certificates of the Laser Dust Monitors are provided in Appendix E.
Monitoring Schedule for the
Reporting Month
3.1.8
The
schedule for environmental monitoring in July 2019 is provided in Appendix F.
Monitoring Requirements
3.2.1 In
accordance with the EM&A Manual, impact
noise monitoring should be conducted for at
least once a week during the construction phase of the Project. Table 3.3 summarizes
the monitoring parameters, frequency and duration of impact noise monitoring.
The Action and Limit Levels of the noise monitoring is provided in Appendix D.
Table 3.3 Noise Monitoring
Parameters, Frequency and Duration
|
Parameter and Duration
|
Frequency
|
|
30-mins
measurement at each monitoring station between 0700 and 1900 on normal
weekdays. Leq, L10 and L90 would be
recorded.
|
At least once per week
|
Monitoring
Equipment
3.2.2 Noise monitoring was performed using sound level
meter at each designated monitoring station.
The sound level meters deployed comply with the International
Electrotechnical Commission Publications (IEC) 651:1979 (Type 1) and 804:1985
(Type 1) specifications. Acoustic
calibrator was deployed to check the sound level meters at a known sound
pressure level. Brand and model of the
equipment is given in Table 3.4.
Table 3.4 Noise Monitoring Equipment
for Regular Noise Monitoring
Monitoring Locations
3.2.3
The
monitoring stations for construction noise monitoring pertinent to the Project have
been identified based on the approved EM&A Manual for the Project. Locations of the noise monitoring stations are
summarized in Table 3.5 and
shown in Figure 3.2.
Table 3.5 Noise Monitoring
Stations during Construction Phase
|
Location
|
Monitoring Station
|
Description
|
Measurement
|
|
E-N12a [1]
|
19 Hing Yan Street
|
Rooftop (9/F)
|
Façade
|
|
E-N21a [1]
|
Block B of Merit Industrial Centre
|
Rooftop (13/F)
|
Free field [2]
|
Notes:
[1] The noise monitoring stations proposed in the EM&A Manual (i.e.
Grand Waterfront Tower 3 with ID: E-N12 and Hang Chien Court Block J with ID:
E-N21) were not available for impact noise monitoring, therefore impact
monitoring was conducted at E-N12a and E-N21a as an alternative which was
agreed by the ER, IEC and EPD.
[2] A correction of +3 dB(A)
was made to the free field measurements.
Monitoring
Parameters, Frequency and Duration
3.2.4 Table 3.6 summarizes the monitoring parameters, frequency and duration of
impact noise monitoring.
Table 3.6 Noise Monitoring Parameters, Frequency and Duration
|
Location
|
Parameter and Duration
|
Frequency
|
|
E-N12a and E-N21a
|
30-mins measurement at each
monitoring station between 0700 and 1900 on normal weekdays. Leq,
L10 and L90 would be recorded.
|
At
least once per week
|
Monitoring Methodology
3.2.5 Monitoring
Procedure
(a)
The sound level meter was set on
a tripod at a height of 1.2 m above the ground.
(b)
Façade measurement was made at E-N12a.
(c)
Free field measurements was made
at monitoring location E-N21a. A correction of +3 dB(A) shall be made to the
free field measurements.
(d)
The battery condition was checked to ensure the correct
functioning of the meter.
(e)
Parameters such as frequency
weighting, the time weighting and the measurement time were set as follows:
(i)
frequency weighting: A
(ii)
time weighting: Fast
(iii)
time measurement: Leq(30-minutes)
during non-restricted hours i.e. 0700 – 1900 on normal weekdays.
(f)
Prior to and after each noise
measurement, the meter was calibrated using the acoustic calibrator for 94
dB(A) at 1000 Hz. If the difference in
the calibration level before and after measurement was more than 1 dB(A), the
measurement would be considered invalid and repeat of noise measurement would
be required after re-calibration or repair of the equipment.
(g)
During the monitoring period, the
Leq, L10 and L90 were recorded. In addition, site conditions and noise
sources were recorded on a standard record sheet.
(h)
Noise measurement was paused
during periods of high intrusive noise (e.g. dog barking, helicopter noise) if
possible. Observations were recorded when intrusive noise was unavoidable.
(i)
Noise monitoring was cancelled in
the presence of fog, rain, wind with a steady speed exceeding 5m/s, or wind
with gusts exceeding 10m/s.
3.2.6 Maintenance
and Calibration
(a)
The microphone
head of the sound level meter was cleaned with soft cloth at
regular intervals.
(b)
The meter and
calibrator were sent to the supplier or HOKLAS laboratory to check and
calibrate at yearly intervals.
(c)
Calibration
certificates of the sound level meters and acoustic calibrators are provided
in Appendix E.
Monitoring Schedule for the Reporting
Month
3.2.7 The schedule for environmental
monitoring in July 2019 is provided in Appendix F.
3.3
Landscape and Visual
3.3.1
As per the EM&A Manuals,
the landscape and visual mitigation measures shall be implemented and site
inspections should be undertaken once every two weeks during the construction
period. A summary of the implementation status is presented in Section 6.
4.1.1 The Contractor has implemented environmental
mitigation measures and requirements as stated in the EIA Reports, the EP and
EM&A Manuals. The implementation status of the environmental mitigation
measures during the reporting period is summarized in Appendix C.
Status of required submissions under the EP during the
reporting period is summarised in Table 4.1.
Table 4.1 Status of Required Submission under Environmental Permit
|
EP Condition
|
Submission
|
Submission
Date
|
|
Condition 3.4 of
EP- 457/2013/C
and
Condition 3.4 of
FEP-01/457/2013/C
|
Monthly EM&A Report for June 2019
|
12 July 2019
|
5.1.1 The monitoring results for 24-hour TSP and
1-hour TSP are summarized in Table 5.1 and Table 5.2 respectively. Detailed air quality monitoring results and daily
extract of meteorological observations are presented in Appendix G.
Table 5.1 Summary of 24-hour
TSP Monitoring Result in the Reporting Period
|
ID
|
Average (mg/m3)
|
Range (mg/m3)
|
Action Level (mg/m3)
|
Limit Level (mg/m3)
|
|
E-A14a
|
31.2
|
17.9 – 59.3
|
197.3
|
260
|
Table 5.2 Summary of 1-hour
TSP Monitoring Result in the Reporting Period
|
ID
|
Average (mg/m3)
|
Range (mg/m3)
|
Action Level (mg/m3)
|
Limit Level (mg/m3)
|
|
E-A14a
|
66.1
|
60.2 – 72.2
|
302.4
|
500
|
5.1.2
No Action and Limit Level exceedance was recorded
for 24-hour TSP monitoring at the monitoring
location in the reporting month.
5.1.3
No Action and Limit Level exceedance was recorded
for 1-hour TSP monitoring at the monitoring
location in the reporting month.
5.1.4
The
event and action plan is annexed in Appendix I.
5.1.5 Major dust sources during the monitoring
included construction dust and nearby traffic emission.
5.2.1 The monitoring results for noise are summarized
in Table 5.3 and the monitoring data is provided in Appendix H.
Table 5.3 Summary of
Construction Noise Monitoring Results in the Reporting Period
|
ID
|
Range, dB(A), Leq (30
mins)
|
Limit Level, dB(A), Leq
(30 mins)
|
|
E-N12a
|
64.7
– 69.1
|
75
|
|
E-N21a
|
61.0
– 67.6
|
75
|
5.2.2
No Action
Level exceedance was recorded since no noise related complaint was received in
the reporting month.
5.2.3
No
Limit Level exceedance of noise was recorded at the monitoring station in the
reporting month.
5.2.4
The
event and action plan is annexed in Appendix I.
5.2.5
Major noise sources during the monitoring included
construction noise from the Project site and nearby traffic noise.
5.3.1
C&D
materials and wastes sorting were carried out on site. Receptacles were available
for C&D wastes and general refuse
collection.
5.3.2
As advised by the Contractor,
Total 17,881 m3
of inert C&D material was generated, 10 m3 inert
C&D material was disposed at the Public Fills, 2,254 m3 was reused
in the Contract and 15,617 m3 was reused in other contract in the
reporting month. 75,240 kg general refuse was generated and sent to NENT Landfill in the reporting month. No metals, plastics and paper/cardboard packaging were collected
by recycle contractor in the reporting month. 1,400 L of chemical
waste was collected by licensed contractor in the reporting period. No Type 1, 2 and 3 Marine
sediment was disposed at Confined Marine Disposal Facility to the East of Sha
Chau. The waste flow table is annexed in Appendix K.
5.3.3 The Contractor is advised to properly maintain on
site C&D materials and wastes collection, sorting and recording system and
maximize reuse / recycle of C&D materials and wastes. The Contractor is
reminded to properly maintain the site tidiness and dispose of the wastes
accumulated on site regularly and properly.
5.3.4 The Contractor is reminded that chemical waste
containers should be properly treated and stored temporarily in designated
chemical waste storage area on site in accordance with the Code of Practise on
the Packaging, Labelling and Storage of Chemical Wastes.
5.4.1
Bi-weekly
inspection of the implementation of landscape and visual mitigation measures was
conducted on 3, 17 and 31 July 2019. A summary of the site inspection is provided in Appendix C. The
observations and recommendations made during the site inspections are presented in Table
6.1.
6.1.1 Site inspections were carried out on a
weekly basis to monitor the implementation of proper environmental pollution
control and mitigation measures for the Project. A summary of the mitigation measures
implementation schedule is provided in Appendix C.
6.1.2
In the
reporting month, 5 site inspections were carried out on 3, 10, 17, 24 and 31 July
2019. Joint inspections with the IEC, ER, the Contractor and the ET were
conducted on 17 July 2019. In addition, no joint inspection with EPD, ER and
the Contractor was conducted in July 2019 to check the compliance of the
dumping permit condition. No
non-compliance was recorded during the site inspection. Details of observations
recorded during the site inspections are presented in Table 6.1.
Table 6.1 Observations and
Recommendations of Site Audit
|
Parameters
|
Date
|
Observations and Recommendations
|
Follow-up
|
|
Air
Quality
|
17 Jul 2019
|
· Exposed area
was observed without sufficient watering for the dust suppression at Kai Tak.
The Contractor was advised to provide regular watering on the exposed area.
|
The item was
rectified by the Contractor on 19 Jul 2019.
|
|
24 Jul 2019
|
· Decolorize NRMM
label was observed on the power pack at barge which located near the steel
platform. The Contractor was reminded to replace the NRMM label.
|
The item was
rectified by the Contractor on 29 Jul 2019.
|
|
31 Jul 2019
|
· NRMM label was
not observed on the drill rig at Kai Tak. The Contractor was reminded to
affix the proper NRMM label on the restricted machinery.
|
The item will
be followed up in next site inspection.
|
|
Noise
|
24 Jul 2019
|
· Breaker head of
excavator was observed without wrapping with the acoustic material during
breaking activity at at-grade road of Kai Tak. The Contractor was reminded to
provide wrapping at the breaker heard to minimize the noise impact.
|
The item was
rectified by the Contractor on 25 Jul 2019.
|
|
Water
Quality
|
03 Jul 2019
|
· Accumulated
muddy water was observed near the waterfront at Landing Step Area. The
Contractor was reminded to pump out the muddy water in timely manner to avoid
the muddy water run out from site to water.
|
The item was
rectified by the Contractor on 05 July 2019.
|
|
10 Jul 2019
|
· Gap was
observed at the silt curtain which near the steel platform. The Contactor was
reminded to seal the gap to ensure the efficiency of silt curtain.
|
The item was rectified
by the Contractor on 13 July 2019
|
|
· Oil stain was
observed on the bare ground at Ma Tau Kok. The Contractor was reminded to
clean up the oil stain in timely manner and dispose of as chemical waste.
|
The item was
rectified by the Contractor on 11 Jul 2019.
|
|
31 Jul 2019
|
· Oil drum was
observed stored without drip tray at Steel Platform. The Contractor was
reminded to provide a drip tray for oil spillage prevention.
|
The item will
be followed up in next site inspection.
|
|
Waste/
Chemical Management
|
Nil
|
Nil
|
Nil
|
|
Landscape
&
Visual
|
Nil
|
Nil
|
Nil
|
|
Permits/
Licenses
|
Nil
|
Nil
|
Nil
|
6.1.3
Most of follow-up
actions requested by Contractor's ET and IEC during the site inspection were
undertaken as reported by the Contractor and confirmed in the following weekly site inspection conducted
during the reporting period. No follow-up action requested by EPD during the site
inspection in the reporting month.
6.2.1
All
24-hour TSP result was below the Action and Limit Levels at all monitoring
locations in the reporting month.
6.2.2
All
1-hour TSP result was below the Action and Limit Levels at all monitoring
locations in the reporting month.
6.2.3 No Action Level exceedance was recorded since no
noise related complaint was received in the reporting month.
6.2.4
No
Limit Level exceedance for noise was recorded at all monitoring stations in the
reporting month.
6.3.1
No
environmental non-compliance was recorded in the reporting month.
6.4.1 One (1) complaint (received by Environmental
Protection Department on 23 July 2019) was referred by the Contractor on 25 July
2019, the investigation report for the complaint was finalized on 31 July 2019. Cumulative statistics on environmental
complaints is provided in Appendix J.
6.5
Summary of Environmental Summon and Successful Prosecutions
6.5.1 No environmental related prosecution or
notification of summons was received in the reporting month. Cumulative
statistics on notification of summons and successful prosecutions is provided
in Appendix J.
7.1.1
The
major construction works between August and October 2019 is provided in Table 7.1.
Table 7.1 Construction Activities in the coming three month
|
Locations
|
Site Activities
|
|
Kai
Tak
|
·
Pipe piling
·
Pre-drill works,
·
Socket H-pile installation
·
Watermain diversion
·
Construction of ventilation adit
·
Construction of at-grade road and associated backfilling
works
·
ELS removal at ventilation adit
·
Excavation and ELS installation at cut & cover tunnel
·
Depressed road and underpass
|
|
Ma
Tau Kok
|
·
Temporary Traffic Management implementation
·
Project signboard construction
·
Soft and rock excavation
·
ELS installation & decking works for access shaft
·
Pipe piling works for cut and cover tunnel
·
Existing drainage diversion works
·
Fresh water pipe installation works
·
Excavation works for landing steps
|
|
Kowloon
Bay
|
·
Pipe pile construction
·
Wall tie installation and temporary reclamation for stage 1
temporary reclamation
·
Excavation for stage 1 underwater tunnel
·
Construct cradle
·
K-frame tower and sliding system
·
Truss installation
|
|
Barging
Point
|
·
Barging point operation
|
7.2.1
Potential
environmental impacts arising from the above construction activities are mainly
associated with construction dust, construction noise, and waste management.
7.3.1 The tentative schedule for
environmental monitoring in August 2019 is provided in Appendix F.
8.1.1
24-hour
TSP and noise monitoring were carried out in the reporting month.
8.1.2
All
24-hour TSP monitoring results complied with the Action / Limit Level at in the reporting month.
8.1.3
All
1-hour TSP result was below the Action and Limit Levels at all monitoring
locations in the reporting month.
8.1.4
No Action
Level exceedance was recorded since no noise related complaint was received in
the reporting month.
8.1.5
No Limit Level exceedance for noise was recorded at all monitoring stations in the reporting month.
8.1.6 5 nos. of environmental
site inspections and no site inspections with EPD were carried out in July 2019. Recommendations on remedial actions were given to the Contractor for
the deficiencies identified during the site audit.
8.1.7 One (1) complaint (received by Environmental
Protection Department on 23 July 2019) was referred by the Contractor on 25 July
2019, the investigation report for the complaint was finalized on 31 July 2019.
8.1.8
No notification of summons and successful prosecution were received in
the reporting month.
8.2.1
According
to the environmental site inspections performed in the reporting month, the
following recommendations were provided:
Air
Quality Impact
· The
Contractor was reminded to affix the proper NRMM label and replace the
decolorized NRMM label on the restricted machinery.
· The
Contractor was advised to provide regular watering on the exposed area.
Construction
Noise Impact
· The
Contractor was reminded to provide wrapping at the breaker heard to minimize
the noise impact.
Water
Quality Impact
· The
Contractor was reminded to pump out the muddy water in timely manner to avoid
the muddy water run out from site to water.
·
The Contactor was reminded to seal the gap to
ensure the efficiency of silt curtain.
· The
Contractor was reminded to clean up the oil stain in timely manner and dispose
of as chemical waste.
·
The Contractor was reminded to provide a drip tray
for oil spillage prevention.
Chemical
and Waste Management
· No
specific observation was identified in the reporting month.
Landscape
& Visual Impact
· No
specific observation was identified in the reporting month.
Permits/licenses
· No
specific observation was identified in the reporting month.
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