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 seventeenth
monthly EM&A Report presenting the EM&A works carried out during the
period between 1 and 31 August 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
·
Excavation works at Underpass
·
Construction of New Right of Way
|
|
Ma Tau Kok
|
·
Temporary Traffic Management implementation
·
Soft excavation
·
Noise panel installation
·
ELS installation & decking works for access shaft
·
Excavation works for landing steps
|
|
Kowloon Bay
|
·
Wall tie installation and temporary reclamation for stage 1
temporary reclamation
·
Preparation work of K-frame tower and sliding system
|
|
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
One (1) noise related complaint was received
in the reporting month. Based on the investigation result, the noise nuisance in
case was not related to the project. Therefore, one action level of noise was triggered and the investigation report was finalized on 2 September 2019.
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 29 July 2019) was referred by the Contractor on 27 August
2019, the investigation report was finalized on 2 September 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
·
Dewatering well and observation well installation
·
Backfilling works at ventilation adit
·
Sheet pile removal at at-grade road
·
ELS removal at ventilation adit
·
Excavation and ELS installation at cut & cover tunnel
·
Depressed road and underpass
|
|
Ma Tau Kok
|
·
Temporary Traffic Management implementation
·
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
|
·
Wall tie installation and temporary reclamation for stage 1
temporary reclamation
·
Excavation for stage 1 underwater tunnel
·
Cradle construction
·
K-frame tower and sliding system
·
Truss installation and Seawall Removal
|
|
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 seventeenth monthly EM&A Report which summarizes the impact
monitoring results and audit findings for the Project during the reporting period
between 1 and 31 August 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
·
Excavation works at Underpass
·
Construction of New Right of Way
|
|
Ma
Tau Kok
|
·
Temporary Traffic Management implementation
·
Soft excavation
·
Noise panel installation
·
ELS installation & decking works for access shaft
·
Excavation works for landing steps
|
|
Kowloon
Bay
|
·
Wall tie installation and temporary reclamation for stage 1
temporary reclamation
·
Preparation work of K-frame tower and sliding system
|
|
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 until 27
Aug 2019
|
Barging Point
Operation at Kai Tak Barging Point
|
|
GW-RE0632-19
|
27 Aug 2019
|
26 Feb 2019
|
Valid on 27
Aug 2019
|
Barging Point
Operation at Kai Tak Barging Point
|
|
GW-RE0134-19
|
7 Mar 2019
|
6 Sep 2019
|
Valid until 7
Aug 2019
|
Welding,
Pumping Test and System at Ma Tau Kok
|
|
GW-RE0599-19
|
7 Aug 2019
|
30 Jan 2020
|
Valid on 7 Aug
2019
|
Welding, Pumping
Test and System at Ma Tau Kok
|
|
GW-RE0595-19
|
30 Jul 2019
|
29 Sep 2019
|
Valid
|
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
|
|
EP/MD/20-043
|
30 Aug 2019
|
29 Sep 2019
|
Valid on 30 Aug 2019
|
Sediments requiring Type 1 (Dedicated Site) and Type 2 Confined Marine
Disposal
|
|
Billing
Account for Construction Waste Disposal
|
|
7029909
|
22 Jan 2018
|
End of Project
|
Account Active
|
--
|
|
7031949
|
3 Jul 2019
|
4 Oct 2019
|
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
|
--
|
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 August 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 August 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 July 2019
|
14 August 2019
|
5
Monitoring Results
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
|
26.1
|
17.4 – 35.9
|
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
|
62.2
|
55.4 – 67.8
|
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
|
54.2
– 68.8
|
75
|
|
E-N21a
|
55.6
– 65.8
|
75
|
5.2.2
One
(1) noise related complaint was received in the reporting month. Based on the
investigation result, the noise nuisance in case was not related to the project.
Therefore, one action level of noise was triggered and
the
investigation report was finalized on 2 September 2019.
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 21,767 m3
of inert C&D material was generated, 1,068 m3
inert C&D material was disposed at the Public Fills, 6,905 m3
was reused in the Contract and 13,794 m3 was reused in other
contract in the reporting month. 56,440 kg
general refuse was generated and
sent to NENT Landfill in
the reporting month. 10 kg of metals, 9 kg of plastics
and 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, 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.
5.3.4 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 14 and 28 August 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 7, 14, 21 and 28 August
2019. Joint inspections with the IEC, ER, the Contractor
and the ET were conducted on 21 August 2019. In addition, no joint inspection
with EPD, ER and the Contractor was conducted in August 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
|
31 July 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 was
rectified by the Contractor on 6 Aug 2019.
|
|
Noise
|
Nil
|
Nil
|
Nil
|
|
Water
Quality
|
31 July 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 was
rectified by the Contractor on 2 Aug 2019.
|
|
7 August 2019
|
· Oil drum was
observed stored without drip tray at the steel platform. The Contractor was reminded to provide a proper handling
for the chemical storage.
|
The item was
rectified by the Contractor on 9 Aug 2019.
|
|
Reminder:
· The Contractor
was reminded to seal the gap of silt curtain to maintain the effectiveness.
|
The item was rectified
by the Contractor on 12 Aug 2019.
|
|
14 August 2019
|
· Chemical
containers were observed stored without drip tray at Ma Tau Kok. The Contractor was reminded to provide proper
handling for chemicals.
|
The item was rectified
by the Contractor on 12 Aug 2019.
|
|
· Gap of silt
curtain which near the bond head of steel platform was observed. The
Contractor was reminded to seal the gap of silt curtain to maintain the
effectiveness.
|
The item was rectified
by the Contractor on 20 Aug 2019.
|
|
Reminder:
·
The Contractor was reminded to enhance the
measure for surface runoff at Landing Step Area.
|
The item was rectified
by the Contractor on 19 Aug 2019.
|
|
28 August 2019
|
· Accumulated
stagnant water was observed inside the drip tray under the air compressor at
Kai Tak. The Contractor was reminded to clean up
the stagnant water inside the drip tray for prevention of oil spillage.
|
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 the site inspection on 21 August 2019. 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 One (1) noise related complaint was received
in the reporting month. Based on the investigation result, the noise nuisance in
case was not related to the project. Therefore, one action level of noise was triggered and the investigation report was finalized on 2 September
2019.
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 29 July
2019) was referred by the Contractor on 27 August 2019, the investigation report
was finalized on 2 September 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 September
and November 2019 is provided in Table 7.1.
Table 7.1 Construction Activities in the coming three months
|
Locations
|
Site Activities
|
|
Kai
Tak
|
·
Pipe piling
·
Pre-drill works,
·
Socket H-pile installation
·
Dewatering well and observation well installation
·
Backfilling works at ventilation adit
·
Sheet pile removal at at-grade road
·
ELS removal at ventilation adit
·
Excavation and ELS installation at cut & cover tunnel
·
Depressed road and underpass
|
|
Ma
Tau Kok
|
·
Temporary Traffic Management implementation
·
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
|
·
Wall tie installation and temporary reclamation for stage 1
temporary reclamation
·
Excavation for stage 1 underwater tunnel
·
Cradle construction
·
K-frame tower and sliding system
·
Truss installation and Seawall Removal
|
|
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
One
(1) noise related complaint was received in the reporting month. Based on the
investigation result, the noise nuisance in case was not related to the project.
Therefore, one action level of noise was triggered and
the investigation report
was finalized on 2 September 2019.
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 August 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 29 July
2019) was referred by the Contractor on 27 August 2019, the investigation report
was finalized on 2 September 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
· No specific observation was identified in the reporting month.
Construction Noise Impact
· No specific observation was identified in the reporting month.
Water Quality Impact
· The Contractor was reminded to provide a proper handling for the chemical
storage.
· The Contractor was reminded to seal the gap of silt curtain to maintain
the effectiveness.
· The Contractor was reminded to enhance the measure for surface runoff at
Landing Step Area.
· The Contractor was reminded to clean up the stagnant water inside the
drip tray for prevention of oil spillage.
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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