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........... EXECUTIVE
SUMMARY
2.......... Project
Information
2.3 Construction
Programme and Activities
2.5 Status of Environmental
Licences, Notification and Permits
3.......... Environmental Monitoring
Requirements
3.1 Construction Dust
Monitoring
3.2 Construction Noise
Monitoring
4.......... Implementation
Status of Environmental Mitigation Measures
5.......... Monitoring
Results
5.1 Construction Dust
Monitoring
5.2 Regular
Construction Noise Monitoring
6.......... ENVIRONMENTAL
SITE INSPECTION AND AUDIT
7.......... Environmental Non-conformance
7.1 Summary of
Monitoring Exceedances
7.2 Summary of
Environmental Non-Compliance
7.3 Summary of
Environmental Complaints
7.4 Summary of Environmental
Summon and Successful Prosecutions
8.1 Construction
Programme for the Next Three Months
8.2 Key Issues for the
Coming Month
8.3 Monitoring
Schedule for the Coming Month
9.......... ConclusionS
AND RECOMMENDATIONS
List of Tables
Table 2.1........... Construction
Activities in the reporting month
Table 2.2........... Contact Information of Key Personnel
Table 2.3........... Status of Environmental Licenses, Notifications and Permits
Table 3.1 ......... Air Quality Monitoring Equipment
Table 3.2 ......... Location of Construction Dust
Monitoring Station
Table 3.3 ......... Noise Monitoring Parameters, Frequency and Duration
Table 3.4 ......... Noise Monitoring Equipment for
Regular Noise Monitoring
Table 3.5 ......... Noise Monitoring Stations during Construction Phase
Table 3.6 ......... Noise Monitoring Parameters, Frequency and Duration
Table 4.1........... Status of Required
Submission under Environmental Permit
Table 5.1 ......... Summary of 24-hour TSP Monitoring Result in the Reporting
Period
Table 5.2 ......... Summary of 1-hour TSP Monitoring Result in the Reporting
Period
Table 5.3 ......... Summary of Construction Noise Monitoring Results in the
Reporting Period
Table 6.1 ......... Observations and Recommendations of Site Audit
Table 8.1........... Construction
Activities in the coming three months
List of Figures
|
Site Layout Plan |
|
|
Location of Air
Quality Monitoring Station |
|
|
Locations of Noise
Monitoring Station |
|
|
|
|
List
of Appendices
|
Construction Programme |
|
|
Project
Organization Structure |
|
|
Implementation
Schedule of Environmental Mitigation Measures |
|
|
Summary of Action
and Limit Levels |
|
|
Calibration
Certificates of Equipment |
|
|
EM&A Monitoring
Schedules |
|
|
Air Quality
Monitoring Results and their Graphical Presentations |
|
|
Noise Monitoring
Results and their Graphical Presentations |
|
|
Event and Action
Plan Cumulative
Statistics on Complaints, Notification of Summons and Successful Prosecutions |
|
|
Monthly Summary
Waste Flow Table Shatin to Central
Link (Hung Hom – Admiralty Section) Kai Tak Barging
Facility under FEP-01/436/2012/F Monthly EM&A Report for September 2022 |
|
|
|
|
EXECUTIVE SUMMARY
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
audit 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 54th
monthly EM&A Report presenting the EM&A works carried out during the
period between 1 and 30 September 2022. As informed by the Contractor, major
activities in the reporting period were:
|
Locations |
Site Activities |
|
Kai Tak |
·
Road pavement at underpass and depressed road; ·
Precast profile barrier installation at underpass, depressed road and
C&C Tunnel; ·
Excavation and base slab construction at At-grade Road |
|
Ma Tau Kok |
·
Temporary traffic management (TTM) implementation; ·
Excavation at MTK C&C Tunnel; ·
Decking and excavation & lateral support (ELS) installation at MTK
C&C Tunnel. |
|
Kowloon Bay |
·
Tunnel walkway construction and road pavement at Stage 1 UWT; ·
Precast profile barrier installation at Stage 1 UWT; ·
Piling Works for Stage 2 UWT; ·
Temporary Reclamation at Stage 2 UWT; ·
Modular strutting installation at Stage 2 UWT; ·
Dredging of marine sediment at Stage 2 UWT. |
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
exceedance of Limit level of noise was recorded in the reporting month.
Complaint,
Notification of Summons and Successful Prosecution
One
(1) environmental complaint regard to the odour
nuisance was received and referred by the Contractor on 19 and 22 September
2022. Since the complaint is under investigation process, the detail of
investigation result will be provided in next reporting month.
No
environmental related notification of summons and successful prosecution were
received in the reporting month.
Reporting
Changes
No report changes in the reporting period.
Future
Key Issues
Key issues to be
considered in the next three months included:
|
Locations |
Site Activities |
|
Kai Tak |
- Precast profile barrier
installation; - Road Pavement at underpass,
depressed road and C&C Tunnel; - Excavation, base slab and
tunnel wall construction at At-grade road. |
|
Ma Tau Kok |
- Temporary traffic management
(TTM) implementation; - Excavation at MTK C&C
Tunnel; - Decking and excavation &
lateral support (ELS) installation at MTK C&C Tunnel. |
|
Kowloon Bay |
- Road pavement at Stage 1 UWT; - Precast profile barrier
installation at Stage 1 UWT; - Temporary Reclamation at
Stage 2 UWT; - Modular strutting installation at Stage 2 UWT; - Dredging of marine sediment
at Stage 2 UWT. |
Potential
environmental impacts arising from the above construction activities are mainly
associated with construction dust, construction noise, water pollution
control, and waste management.
1
INTRODUCTION
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
Purpose of the Report
1.1.1
This is the 54th monthly EM&A Report which
summaries the impact monitoring results and audit findings for the Project
during the reporting period between 1 and 30 September
2022.
1.2
Report Structure
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
Project
Information
2.1
Background
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/D) was
issued by the Director of Environmental Protection (DEP) on 15 June 2021.
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
Site Description
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
Construction Programme and Activities
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 |
·
Road pavement at underpass and depressed road; ·
Precast profile barrier installation at underpass, depressed road and
C&C Tunnel; ·
Excavation and base slab construction at At-grade Road |
|
Ma
Tau Kok |
·
Temporary traffic management (TTM) implementation; ·
Excavation at MTK C&C Tunnel; ·
Decking and excavation & lateral support (ELS) installation at MTK
C&C Tunnel. |
|
Kowloon
Bay |
·
Tunnel walkway construction and road pavement at Stage 1 UWT; ·
Precast profile barrier installation at Stage 1 UWT; ·
Piling Works for Stage 2 UWT; ·
Temporary Reclamation at Stage 2 UWT; ·
Modular strutting installation at Stage 2 UWT; ·
Dredging of marine sediment at Stage 2 UWT. |
2.3.2
The construction programme is presented in Appendix A.
2.4
Project Organization
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 3113 |
3015 8052 |
|
Gammon |
Contractor |
Contracts Manager |
Mr. Kin Fai Tam |
2516 8823 |
2516 6260 |
|
Environmental Manager |
Ms. Michelle Tang |
9267 8866 |
2516 6260 |
||
|
AECOM |
Contractor’s Environmental
Team (ET) |
ET Leader |
Mr. Y T Tang |
3922 9393 |
2317 7609 |
2.5
Status of Environmental Licences, Notification and Permits
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 |
|
WT00030330-2018 |
27 Apr 2018 |
30 Apr 2023 |
Valid |
Kowloon Bay |
|
Construction Noise Permit |
||||
|
GW-RE0736-22 |
1 Aug 2022 |
30 Jan 2023 |
Valid |
General Works at Ma Tau Kok |
|
GW-RE0483-22 |
17 May 2022 |
15 Nov 2022 |
Valid |
General Works at Kai Tak |
|
GW-RE0825-22 |
21 Aug 2022 |
20 Dec 2022 |
Valid |
General Works at Stage 1 Underwater Tunnel |
|
GW-RE0585-22 |
17 Jun 2022 |
16 Oct 2022 |
Valid |
General Works at Stage 2 Underwater Tunnel |
|
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 |
||||
|
EP/MD/23-003 |
12 Sep 2022 |
11 Oct 2022 |
Valid |
Sediments requiring
Type 1 (Dedicated Site) and Type 2 Confined Marine Disposal |
|
EP/MD/23-038 |
14 Sep 2022 |
13 Oct 2022 |
Valid |
Sediments
requiring Type 3 disposal (Filled up by 50%) |
|
Billing Account for Construction
Waste Disposal |
||||
|
7029909 |
22 Jan 2018 |
End of Project |
Account Active |
-- |
|
7031949 |
29 Aug 2022 |
28 Nov 2022 |
Account Active |
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 |
-- |
|
|
||||
3
Environmental Monitoring
Requirements
3.1
Construction Dust Monitoring
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
|
Tisch
Total Suspended Particulate Mass Flow Controlled High Volume Air Sampler |
|
|
Calibration
Kit (24-hour
TSP) |
TISCH
Environmental Orifice |
|
Portable
direct reading dust meter |
Sibata Digital Dust Monitor |
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) |
[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 September 2022 is provided
in Appendix F.
3.2
Construction Noise Monitoring
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 |
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
|
B&K (Model No. 2250 & 2270) |
|
|
Acoustic
Calibrator |
Rion (Model No.
NC-74) & B&K (Model No. 4231) |
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
(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 September 2022 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
Implementation Status of Environmental
Mitigation Measures
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 |
Monthly EM&A Report for August
2022 |
14 September 2022 |
5
Monitoring Results
5.1
Construction Dust Monitoring
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 |
51.9 |
39.0
– 62.7 |
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 |
67.0 |
61.6
– 73.6 |
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
Regular Construction Noise Monitoring
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 |
65.3
– 69.8 |
75 |
|
E-N21a |
61.3
– 69.4 |
75 |
5.2.2 No
Action and Limit Level exceedance for noise was recorded at all monitoring
stations in the reporting month.
5.2.3 The
event and action plan is annexed in Appendix I.
5.2.4
Major noise sources during the
monitoring included construction noise from the Project site and nearby traffic
noise.
5.3
Waste Management
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 3,842 m3 of
inert C&D
material were generated and no inert C&D material
was disposed to public fill, 3,842 m3 of inert C&D was reused in
the Contract and no other projects respectively in the reporting month. 97,700 kg of general refuse was generated and sent to NENT
Landfill in the reporting month. No metal, plastics and no
paper/cardboard packaging were collected by recycle contractor in the reporting
month. No chemical waste was collected by licensed contractor in the reporting
month. No Type 1 Marine sediment was disposed in the reporting month.
1,629 m3 of Type 2 and 331 m3 of Type 3 Marine sediment
were disposed at Confined Marine Disposal Facility to the East of Sha Chau in
the reporting month. 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 Practice on the Packaging, Labelling and Storage of Chemical
Wastes.
5.4
Landscape and Visual
5.4.1 Bi-weekly inspection of the
implementation of landscape and visual mitigation measures was conducted on 7
and 21 September 2022. 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
ENVIRONMENTAL SITE INSPECTION AND AUDIT
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, 4 site inspections were
carried out on 7, 14, 21 and 28 September 2022. Joint
inspections with the IEC, ER, the Contractor and ET were conducted on 21 September 2022. 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 |
Nil |
Nil |
Nil |
|
Noise |
7
Sep 2022 |
· Drilling work conducted without
noise reduction measure was observed at site boundary of MTK. The Contractor
was advised to provide sound-proof fiber to the noisy work conducted onsite. |
The item was rectified by the Contractor on |
|
Water Quality |
14 Sep 2022 |
Reminder · The
Contractor was reminded to place a tarpaulin sheet at the gap between derrick
light and marine platform of Stage2 to prevent any dropping material to the
sea. |
The item was rectified by the Contractor on |
|
Waste/ Chemical Management |
7
Sep 2022 |
Reminder · The Contractor was reminded
to sort out the chemical container, which disposed of with the non-inert
waste, at marine platform of Stage 2. |
The item was rectified by the Contractor on |
|
14
Sep 2022 |
Reminder · The Contractor was reminded
to provide proper treatment to the chemical containers disposed at UWT of
Stage2. |
The item was rectified by the Contractor on |
|
|
21
Sep 2022 |
· Oil stain was observed at
marine platform of Stage 2. The Contractor was advised to remove and treat
the oil stain properly. |
The item was rectified by the Contractor on |
|
|
28
Sep 2022 |
Reminder · The Contractor was reminded
to provide a drip tray to the improperly stored chemical containers at Marine
Platform of Stage 2. |
The item was rectified by the Contractor on |
|
|
28
Sep 2022 |
Reminder · The Contractor was reminded
to remove the general refuse, which was improperly placed at C&C Tunnel. |
The item was rectified by the Contractor on |
|
|
Landscape & Visual |
Nil |
Nil |
Nil |
|
Permits/ Licenses |
Nil |
Nil |
Nil |
6.1.3
All follow-up actions requested by Contractor's ET during
the site inspection were undertaken as reported by the Contractor and confirmed
in the following weekly site inspection conducted during
the reporting period.
7
Environmental Non-conformance
7.1
Summary of Monitoring Exceedances
7.1.1 All
24-hour TSP result was below the Action and Limit Levels at all monitoring
locations in the reporting month.
7.1.2 All
1-hour TSP result was below the Action and Limit Levels at all monitoring
locations in the reporting month
7.1.3 No
Action and Limit Level exceedance for noise was recorded at all monitoring
stations in the reporting month.
7.2
Summary of Environmental Non-Compliance
7.2.1 No
environmental non-compliance was recorded in the reporting month.
7.3
Summary of Environmental Complaints
7.3.1
One (1) environmental complaint regard to
the odour nuisance was received and referred by the
Contractor on 19 and 22 September 2022. Since the complaint is under
investigation process, the detail of investigation result will be provided in
next reporting month. Cumulative
statistics on complaint is provided in Appendix J.
7.4
Summary of Environmental Summon and Successful Prosecutions
7.4.1
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.
8
FUTURE
KEY ISSUES
8.1
Construction Programme for the Next Three Months
8.1.1 The
major construction works between October
to December 2022 are provided in Table 8.1.
Table 8.1 Construction Activities in the coming three months
|
Locations |
Site Activities |
|
Kai
Tak |
-
Precast profile barrier installation; -
Road Pavement at underpass, depressed road and C&C Tunnel; -
Excavation, base slab and tunnel wall construction at At-grade road. |
|
Ma
Tau Kok |
-
Temporary traffic management (TTM) implementation; -
Excavation at MTK C&C Tunnel; -
Decking and excavation & lateral support (ELS) installation at MTK
C&C Tunnel. |
|
Kowloon
Bay |
-
Road pavement at Stage 1 UWT; -
Precast profile barrier installation at Stage 1 UWT; -
Temporary Reclamation at Stage 2 UWT; - Modular strutting installation
at Stage 2 UWT; -
Dredging of marine sediment at Stage 2 UWT. |