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 twentieth monthly EM&A Report presenting the EM&A works
carried out during the period between 1 and 30 November 2019. As informed by the Contractor, major activities in
the reporting period were:
|
Locations
|
Site Activities
|
|
Kai Tak
|
·
Excavation and ELS installation at cut & cover tunnel,
depressed road and underpass,
·
Temporary working platform installation at underpass and
depress road;
·
Construction of New Right of Way,
·
Temporary Grouting
|
|
Ma Tau Kok
|
·
TTM implementation,
·
Soft Excavation and Rock Excavation,
·
ELS installation & decking works for access shaft,
·
Construction of footpath,
·
Backfilling works and ELS removal at Landing Step
|
|
Kowloon Bay
|
·
Wall tie installation and temporary reclamation for stage 1
temporary reclamation,
·
S1 Truss fabrication and installation,
·
Excavation for stage 1 underwater tunnel,
·
Temporary Grouting,
·
Seawall Removal
|
|
Barging Point
|
·
Barging point operation (Spoil Disposal)
|
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
No
environmental related complaint, notification of summons and successful
prosecution were received in the reporting month.
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
|
·
Base slab and wall construction at underpass,
·
Excavation and ELS installation at cut & cover tunnel,
depressed road and underpass,
·
Temporary Grouting
|
|
Ma Tau Kok
|
·
TTM implementation,
·
Soft and rock excavation,
·
ELS installation for access shaft,
·
Pipe piling works for cut and cover tunnel,
·
Existing drainage diversion works,
·
Fresh water pipe installation works,
·
Backfilling works and caping construction at Landing Step,
·
Cover walkway construction at Landing Step
|
|
Kowloon Bay
|
·
Excavation for stage 1 underwater tunnel,
·
S1, S2 Truss fabrication and installation,
·
Dewatering well and observation well installation,
·
Temporary Grouting
|
|
Barging Point
|
·
Barging point operation (Spoil Disposal)
|
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 twentieth monthly EM&A Report which summarizes the impact monitoring results and audit findings
for the Project during the reporting period between 1 and 30 November 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
|
·
Excavation and ELS installation at cut & cover tunnel,
depressed road and underpass,
·
Temporary working platform installation at underpass and
depress road,
·
Construction of New Right of Way,
·
Temporary Grouting
|
|
Ma
Tau Kok
|
·
TTM implementation,
·
Soft Excavation and Rock Excavation,
·
ELS installation & decking works for access shaft,
·
Construction of footpath,
·
Backfilling works and ELS removal at Landing Step
|
|
Kowloon
Bay
|
·
Wall tie installation and temporary reclamation for stage 1
temporary reclamation,
·
S1 Truss fabrication and installation,
·
Excavation for stage 1 underwater tunnel,
·
Temporary Grouting,
·
Seawall Removal
|
|
Barging
Point
|
·
Barging point operation (Spoil
Disposal)
|
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
|
|
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 until 15 Nov 2019
|
Percussive
Piling at Stage 1 Temporary Reclamation Area
|
|
GW-RE0632-19
|
27 Aug 2019
|
26 Feb 2020
|
Valid
|
Barging Point
Operation at Kai Tak Barging Point
|
|
GW-RE0740-19
|
20 Sep 2019
|
19 Dec 2019
|
Valid
|
Welding,
Pumping Test and System at Ma Tau Kok
|
|
GW-RS0524-19
|
5 July 2019
|
4 Jan 2020
|
Valid
|
General Works
at Kai Tak
|
|
GW-RE0779-19
|
2 Oct 2019
|
1 Jan 2020
|
Valid
|
Welding and
backfilling at Stage 1 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/20-048
|
16 Oct 2019
|
15 Apr 2020
|
Valid
|
Sediments requiring Type 1 - Open Sea Disposal
|
|
EP/MD/20-077
|
30 Oct 2019
|
29 Nov 2019
|
Valid
|
Sediments requiring Type 1
(Dedicated Site) and Type 2 Confined Marine Disposal
|
|
EP/MD/20-044
|
8 Oct 2019
|
7 Nov 2019
|
Valid until 7 Nov 2019
|
Sediments requiring Type 3 disposal (Filled up by 70%)
|
|
EP/MD/20-084
|
8 Nov 2019
|
7-Dec-19
|
Valid on 8 Nov 2019
|
Sediments requiring Type 3 disposal (Filled up by 70%)
|
|
Billing
Account for Construction Waste Disposal
|
|
7029909
|
22 Jan 2018
|
End of Project
|
Account Active
|
--
|
|
7031949
|
14 Oct 2019
|
14 Jan 2020
|
Account New on 14 Oct
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 November 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 November 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 October 2019
|
14 November 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
|
75.6
|
69.1 – 88.2
|
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
|
63.3
|
58.4 – 70.2
|
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
|
66.0
– 67.6
|
75
|
|
E-N21a
|
63.6
– 67.6
|
75
|
5.2.2
No noise complaint
was received in the reporting month; hence, no Action Level exceedance was
recorded.
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 According to the Contractor’s information, the
concerned soil, which assessed under the updated Supplementary Contamination Assessment
Report, had been excavated in August 2019. In order to minimize the potentially
adverse environmental impacts arising for the handling of potentially
contaminated materials, the following environmental mitigation measures are
proposed during the course soil excavation, stockpiling and backfilling works:
l Excavation profiles
must be properly designed and executed.
l Stockpiling site(s)
shall be lined with impermeable sheeting and bunded. Stockpiles shall be fully
covered by impermeable sheeting to reduce dust emission.
l Excavation and
stockpiling should be carried out during dry season as far as possible to
minimise potentially contaminated runoffs from the Concerned Soil.
l Regular site audit will
be conducted under the Environmental Monitoring and Audit (EM&A) programme
to ensure the soil excavation, stockpiling and backfilling works are carried
out in accordance with this report.
Findings of the site audit will be presented in Table 6.1.
l The truck
transferring Concerned Soil shall be covered entirely by impervious sheeting to
ensure that the dusty materials do not leak from the truck.
5.3.3
As advised by the Contractor, Total 39,967 m3 of
inert C&D
material was generated, 470 m3 inert C&D material
was disposed at the Public Fills, 972 m3 was reused in the Contract
and 38,525 m3 was reused in other contract in the reporting month. 21,790 kg general refuse was generated and sent to NENT
Landfill in the reporting month. 11 kg of metals, 10 kg 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
period. No Type 1, 5,090 m3 of Type 2 and 1,527
m3 of Type 3 Marine sediment were disposed at Confined Marine
Disposal Facility to the East of Sha Chau. The waste flow table is annexed in Appendix
K.
5.3.4 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.
5.3.5 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 6 and 20 November 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, 4 site inspections
were carried out on 6, 13, 20
and 27 November
2019. Joint
inspections with the IEC, ER, the Contractor and the ET were conducted on 20 November 2019. In addition, no joint inspection with
EPD, ER and the Contractor was conducted in November 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
|
13 November 2019
|
Reminder:
· The Contractor was reminded to enhance the frequency of watering
during breaking at Landing Step Area.
|
The item was
rectified by the Contractor on 14 Nov 2019.
|
|
Noise
|
6 November 2019
|
Reminder:
·
The Contractor was
reminded to check the weight of hand-held breaker at the Landing Step Area
and display the noise emission label on it once the weight of the hand-held
breaker over the restricted weight.
|
The item was
rectified by the Contractor on 8 Nov 2019.
|
|
27 November 2019
|
·
Breaker’s head was
observed without proper wrapping with the acoustic mat to minimize the noise
impact from breaking at the access shaft of Ma Tau Kok. The Contractor was
reminded to wrap the breaker’s head properly before commence the breaking.
|
The item was
rectified by the Contractor on 29 November 2019.
|
|
Water
Quality
|
6 November 2019
|
· Oil stain was
observed on the ground at the Steel Platform. The
Contractor was reminded to remove the oil stain in timely manner and dispose
of as chemical waste
|
The item was
rectified by the Contractor on 12 Nov 2019.
|
|
Reminder:
· The Contractor
was reminded to seal the gap of silt curtain at Steel platform.
|
The item was
rectified by the Contractor on 18 Nov 2019.
|
|
13 November 2019
|
· Oil drum was observed stored without drip tray for secondary containment
at Steel Platform. The Contractor was reminded to
provide the drip tray for the oil spillage prevention.
|
The item was
rectified by the Contractor on 18 Nov 2019.
|
|
27 November 2019
|
Reminder:
·
The Contractor was reminded to seal the gap of
silt curtain at northern platform of Steel Platform.
|
The item will be followed up in next reporting period.
|
|
Waste/
Chemical Management
|
Nil
|
Nil
|
Nil
|
|
Land
Contamination
|
Nil
|
Nil
|
Nil
|
|
Landscape
&
Visual
|
Nil
|
Nil
|
Nil
|
|
Permits/
Licenses
|
Nil
|
Nil
|
Nil
|
6.1.3
No follow up action was requested
by ET and IEC during 20 November 2019.
6.1.4
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 noise complaint was received in the reporting month; hence, no Action Level exceedance was recorded.
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 No environmental
related complaints was received in the reporting month. Cumulative
statistics on notification of summons and successful prosecutions 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 December 2019
and February 2020 is provided in Table 7.1.
Table 7.1 Construction Activities in the coming three months
|
Locations
|
Site Activities
|
|
Kai
Tak
|
·
Base slab and wall construction at underpass,
·
Excavation and ELS installation at cut & cover tunnel,
depressed road and underpass,
·
Temporary Grouting
|
|
Ma
Tau Kok
|
·
TTM implementation,
·
Soft and rock excavation,
·
ELS installation for access shaft,
·
Pipe piling works for cut and cover tunnel,
·
Existing drainage diversion works,
·
Fresh water pipe installation works,
·
Backfilling works and caping construction at Landing Step,
·
Cover walkway construction at Landing Step
|
|
Kowloon
Bay
|
·
Excavation for stage 1 underwater tunnel,
·
S1, S2 Truss fabrication and installation,
·
Dewatering well and observation well installation,
·
Temporary Grouting
|
|
Barging
Point
|
·
Barging point operation (Spoil
Disposal)
|
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 December 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 4 nos. of environmental site inspections and
no site inspections with EPD were carried out in November 2019. Recommendations on remedial actions were given to the
Contractor for the deficiencies identified during the site audit.
8.1.7
Referring to the Contractor's information, no environmental related
complaint, 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 enhance the
frequency of watering during breaking.
Construction Noise Impact
· The Contractor was reminded to check the
weight of hand-held breaker and display the noise emission label on it once the
weight of the hand-held breaker over the restricted weight.
· The Contractor was reminded to wrap the
breaker’s head properly before commence the breaking.
Water Quality Impact
· The Contractor was reminded to seal the gap
of silt curtain to ensure the enclosure for marine works.
· The Contractor was reminded to remove the oil
stain in timely manner and dispose of as chemical waste.
· The Contractor was reminded to provide the
drip tray for the 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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