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 twenty-eighth
monthly EM&A Report presenting the EM&A works carried out during the
period between 1 and 31 July 2020. 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
and depressed road;
·
Construction of New Right of Way;
·
Temporary Grouting;
·
Casting tunnel base slab and wall at Underpass and
ventilation adit;
·
Backfilling at Underpass
|
|
Ma Tau Kok
|
·
TTM implementation;
·
Pipe piling works for cut and cover tunnel;
·
Rock Excavation;
·
Shotcreting at the Access Shaft;
·
Laying of lighting ducts;
·
Excavation at Covered Walkway
|
|
Kowloon Bay
|
·
Excavation for Stage 1 underwater tunnel;
·
S5 Truss fabrication and installation;
·
Temporary Grouting;
·
Concrete packing between wailing and CPP Wall
|
|
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
Three (3) noise-related complaints were
received in the reporting month. Based on the investigation results from two finalized
investigation reports, the noise nuisance from the construction site was
minimized with the proper implementation of mitigation measures during the
non-restricted hour and complied with the condition of valid Construction Noise
Permit during the restricted hour. However, the latest complaint is under
investigation and will be reported in next reporting period. Therefore, three action
levels of construction noise were triggered, and the two investigation reports were
finalized on 31 July and 6 August 2020.
No
exceedance of Limit Level of noise was recorded in the reporting month.
Complaint, Notification of Summons and Successful Prosecution
Three (3) complaints received by Highway Department, Government Hotline 1823 and Environmental
Protection Department for noise and referred to the Contractor on 20 and 21 July, 28 July and 30 July 2020 respectively for complaint investigation, the
investigation reports for complaint received by Highway Department and
Government Hotline 1823 were finalized on 31 July and 6 August 2020. However, the latest complaint
is under investigation and will be reported in next reporting period.
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, roof slab construction at cut &
cover, underpass and depressed road;
·
Backfilling works and ELS removal at cut & cover,
underpass and depressed road;
·
Dismantle of working platform;
·
ELS removal at Underpass
|
|
Ma Tau Kok
|
·
TTM implementation;
·
Rock excavation;
·
Pipe piling works for cut and cover tunnel;
·
Fresh water pipe installation works;
·
Constrcution of MTK east wall;
·
Constrcution of traffic deck;
·
Covered walkway construction
|
|
Kowloon Bay
|
·
Excavation for stage 1 underwater tunnel;
·
S6 ELS installation;
·
Temporary Grouting;
·
Backfilling and ELS removal works;
·
Blinding layer, base slab and wall construction;
·
Removal of gas pipe line
|
|
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 twenty-eighth monthly EM&A Report
which
summarizes the impact monitoring results and audit findings for the Project
during the reporting period between 1
and 31 July 2020.
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
and depressed road;
·
Construction of New Right of Way;
·
Temporary Grouting;
·
Casting tunnel base slab and wall at Underpass and
ventilation adit;
·
Backfilling at Underpass
|
|
Ma
Tau Kok
|
·
TTM implementation;
·
Pipe piling works for cut and cover tunnel;
·
Rock Excavation;
·
Shotcreting at the Access Shaft;
·
Laying of lighting ducts;
·
Excavation at Covered Walkway
|
|
Kowloon
Bay
|
·
Excavation for Stage 1 underwater tunnel;
·
S5 Truss fabrication and installation;
·
Temporary Grouting;
·
Concrete packing between wailing and CPP Wall
|
|
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
|
|
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 Mar 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
|
|
GW-RE0108-20
|
6 Mar 2020
|
26 Aug 2020
|
Valid
|
Barging Point Operation at
Kai Tak Barging Point
|
|
GW-RE0301-20
|
5 May 2020
|
4 Aug 2020
|
Valid
|
Rock Breaking at Ma Tau Kok
|
|
GW-RE0534-20
|
23 Jun 2020
|
21 Dec 2020
|
Valid
|
General Works at Kai Tak
|
|
GW-RE0478-20
|
13 Jun 2020
|
12 Dec 2020
|
Valid
|
ELS Installation and
Excavation at Stage 1 Underwater Tunnel
|
|
GW-RE0254-20
|
9 Apr 2020
|
30 Sep 2020
|
Valid
|
Kai Tak Haul Road
|
|
Chemical Waste Producer Registration
|
|
5118-247-G2347-47
|
30 Jan 2018
|
End of Project
|
Valid
|
--
|
|
5118-247-G2347-48
|
30 Jan 2018
|
End of Project
|
Valid
|
--
|
|
Marine Dumping Permit
|
|
-
|
-
|
-
|
-
|
-
|
|
Billing Account
for Construction Waste Disposal
|
|
7029909
|
22 Jan 2018
|
End of Project
|
Account Active
|
--
|
|
7031949
|
27 May 2020
|
26 Aug 2020
|
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
|
Equipment
|
Brand and Model
|
|
High Volume Sampler
(24-hour TSP)
|
Tisch
Total Suspended Particulate Mass Flow Controlled High Volume Air Sampler
(Model No. TE-5170)
|
|
Calibration
Kit
(24-hour
TSP)
|
TISCH
Environmental Orifice
(Model TE-5025A)
|
|
Portable
direct reading dust meter
(1-hour TSP)
|
Sibata Digital Dust Monitor
(Model No. LD-3)
|
Monitoring Locations
3.1.5
The
monitoring station for construction dust monitoring pertinent to the Project
has been identified based on the approved EM&A Manual for the Project. The
location of the construction dust monitoring station is summarized in Table 3.2 and
shown in Figure 3.1.
Table 3.2 Location of Construction Dust
Monitoring Station
|
Location
|
Monitoring Station
|
Description
|
|
E-A14a
[1]
|
Block
B of Merit Industrial Centre
|
Rooftop
(13/F)
|
Note:
[1] The air monitoring station proposed
in the EM&A Manual (i.e. Wyler Gardens with ID: E-A14) was not available
for impact dust monitoring, therefore impact monitoring was conducted at E-A14a
as an alternative which was agreed by the ER, IEC and EPD.
Monitoring
Methodology
3.1.6 24-hour TSP Monitoring
(a)
The HVS
was installed in the vicinity of the air sensitive receivers. The following criteria were considered in the
installation of the HVS
as far as practicable: -
(i)
A horizontal platform with appropriate
support to secure the sampler against gusty wind was provided.
(ii)
Two samplers should not
be placed less than 2m apart from each other;
(iii)
The distance between the HVS and
any obstacles, such as buildings, was at least twice the height that the obstacle
protrudes above the HVS.
(iv)
A minimum of 2 meters separation
from walls, parapets and penthouse for rooftop sampler.
(v)
A minimum of 2 meters separation from
any supporting structure, measured horizontally is required.
(vi)
No furnace or incinerator flues nearby.
(vii)
Airflow around the sampler was
unrestricted.
(viii)
The sampler was located more than
20 meters from any dripline.
(ix)
Any wire fence and gate, required
to protect the sampler, did not obstruct the monitoring process.
(x)
Permission was obtained to set up
the samplers and access to the monitoring station.
(xi)
A secured supply of electricity
was obtained to operate the sampler.
(b)
Preparation
of Filter Papers
(i)
Glass fibre filters, G810 were
labelled and sufficient filters that were clean and
without pinholes were selected.
(ii)
All filters were equilibrated in
the conditioning environment for 24 hours before weighing. The conditioning environment
temperature was around 25 °C and not variable by more than ±3 °C; the relative
humidity (RH) was < 50% and not variable by more than ±5%. A convenient
working RH was 40%.
(iii)
All filter papers were prepared
and analysed by ALS Technichem (HK) Pty Ltd., which is a HOKLAS accredited laboratory
and has comprehensive quality assurance and quality
control programmes.
(c)
Field
Monitoring
(i)
The power
supply was checked to ensure the HVS works properly.
(ii)
The filter holder and the area surrounding
the filter were cleaned.
(iii)
The filter holder was removed by
loosening the four bolts and a new filter, with stamped number upward, on a
supporting screen was aligned carefully.
(iv)
The filter was properly aligned
on the screen so that the gasket formed an airtight seal on the outer edges of
the filter.
(v)
The swing bolts were fastened to
hold the filter holder down to the frame. The pressure applied was sufficient
to avoid air leakage at the edges.
(vi)
Then the shelter lid was closed and
was secured with the aluminium strip.
(vii)
The HVS was warmed-up for about 5
minutes to establish run-temperature conditions.
(viii)
A new flow rate record sheet was
set into the flow recorder.
(ix)
On site temperature and atmospheric
pressure readings were taken and the flow rate of the HVS was checked and adjusted
at around 1.3 m3/min, and complied with the
range specified in the EM&A Manual (i.e. 0.6-1.7 m3/min).
(x)
The programmable digital timer
was set for a sampling period of 24 hrs, and the starting time, weather condition
and the filter number were recorded.
(xi)
The initial elapsed time was
recorded.
(xii)
At the end of sampling, on site
temperature and atmospheric pressure readings were taken and the final flow rate
of the HVS was checked and recorded.
(xiii)
The final elapsed time was
recorded.
(xiv)
The sampled filter was removed carefully
and folded in half length so that only surfaces with collected
particulate matter were in contact.
(xv)
It was then placed in a clean
envelope and sealed.
(xvi)
All monitoring information was recorded
on a standard data sheet.
(xvii) Filters were then sent to ALS Technichem (HK) Pty Ltd. for analysis.
(d)
Maintenance
and Calibration
(i)
The HVS and its accessories were maintained in good working condition, such as replacing
motor brushes routinely and checking electrical wiring to ensure a continuous
power supply.
(ii)
HVSs were calibrated using
TE-5025A Calibration Kit upon installation and thereafter at bi-monthly intervals.
(iii)
Calibration certificate
of the TE-5025A Calibration
Kit and the HVSs are provided in Appendix E.
3.1.7 1-hour TSP Monitoring
(a)
Measuring Procedures
The measuring procedures of the 1-hour dust
meter are in accordance with the Manufacturer’s Instruction Manual as follows:
(i)
Turn the power on.
(ii)
Close the air collecting opening cover.
(iii)
Push the “TIME SETTING” switch to [BG]
(iv)
Push “START/STOP”
switch to perform background measurement for 6 seconds.
(v)
Turn the knob at SENSI ADJ position to insert
the light scattering plate.
(vi)
Leave the equipment for 1 minute upon “SPAN
CHECK” is indicated in the display.
(vii)
Push “START/STOP” switch to perform automatic
sensitivity adjustment. This measurement takes 1 minute.
(viii)
Pull out the knob and return it to MEASURE
position.
(ix)
Push the “TIME SETTING” switch the time set
in the display to 3 hours.
(x)
Lower down the air collection opening cover.
(xi)
Push “START/STOP” switch to start measurement.
(b)
Maintenance and Calibration
(i)
The 1-hour TSP meter
was calibrated at 1-year intervals against a continuous particulate TEOM Monitor,
Series 1400ab. Calibration certificates of the Laser Dust Monitors are
provided in Appendix E.
Monitoring Schedule for the Reporting
Month
3.1.8
The schedule for environmental monitoring in July 2020 is provided in Appendix F.
Monitoring Requirements
3.2.1 In accordance with the EM&A Manual, impact noise monitoring should be conducted for at least once a week during the
construction phase of the Project. Table 3.3 summarizes
the monitoring parameters, frequency and duration of impact noise monitoring.
The Action and Limit Levels of the noise monitoring is provided in Appendix D.
Table 3.3 Noise Monitoring
Parameters, Frequency and Duration
|
Parameter and Duration
|
Frequency
|
|
30-mins
measurement at each monitoring station between 0700 and 1900 on normal
weekdays. Leq, L10 and L90
would be recorded.
|
At least once per week
|
Monitoring
Equipment
3.2.2 Noise monitoring was performed using sound level
meter at each designated monitoring station.
The sound level meters deployed comply with the International Electrotechnical
Commission Publications (IEC) 651:1979 (Type 1) and 804:1985 (Type 1) specifications. Acoustic calibrator was deployed to check the
sound level meters at a known sound pressure level. Brand and model of the equipment is given in Table 3.4.
Table 3.4 Noise Monitoring Equipment
for Regular Noise Monitoring
Monitoring Locations
3.2.3
The
monitoring stations for construction noise monitoring pertinent to the Project have
been identified based on the approved EM&A Manual for the Project. Locations of the noise monitoring stations are
summarized in Table 3.5 and
shown in Figure 3.2.
Table 3.5 Noise Monitoring
Stations during Construction Phase
|
Location
|
Monitoring Station
|
Description
|
Measurement
|
|
E-N12a [1]
|
19 Hing Yan Street
|
Rooftop (9/F)
|
Façade
|
|
E-N21a [1]
|
Block B of Merit Industrial Centre
|
Rooftop (13/F)
|
Free field [2]
|
Notes:
[1] The noise monitoring stations proposed in the
EM&A Manual (i.e. Grand Waterfront Tower 3 with ID: E-N12 and Hang Chien Court Block J with ID: E-N21) were not available for
impact noise monitoring, therefore impact monitoring was conducted at E-N12a and
E-N21a as an alternative which was
agreed by the ER, IEC and EPD.
[2] A correction
of +3 dB(A) was made to the free field measurements.
Monitoring
Parameters, Frequency and Duration
3.2.4 Table 3.6 summarizes the monitoring parameters, frequency and duration of
impact noise monitoring.
Table 3.6 Noise Monitoring Parameters, Frequency and Duration
|
Location
|
Parameter and Duration
|
Frequency
|
|
E-N12a and E-N21a
|
30-mins measurement at each
monitoring station between 0700 and 1900 on normal weekdays. Leq, L10 and L90 would
be recorded.
|
At
least once per week
|
Monitoring Methodology
3.2.5 Monitoring Procedure
(a)
The sound level meter was set on
a tripod at a height of 1.2 m above the ground.
(b)
Façade measurement was made at E-N12a.
(c)
Free field measurements was made at monitoring location E-N21a. A correction of +3
dB(A) shall be made to the free field measurements.
(d)
The battery condition was checked to ensure the correct
functioning of the meter.
(e)
Parameters such as frequency
weighting, the time weighting and the measurement time were set as follows:
(i)
frequency weighting: A
(ii)
time weighting: Fast
(iii)
time measurement: Leq(30-minutes) during non-restricted
hours i.e. 0700 – 1900 on normal weekdays.
(f)
Prior to and after each noise
measurement, the meter was calibrated using the acoustic calibrator for 94 dB(A)
at 1000 Hz. If the difference in the
calibration level before and after measurement was more than 1 dB(A), the measurement
would be considered invalid and repeat of noise measurement would be required
after re-calibration or repair of the equipment.
(g)
During the monitoring period, the
Leq, L10 and L90 were
recorded. In addition, site conditions
and noise sources were recorded on a standard record sheet.
(h)
Noise measurement was paused
during periods of high intrusive noise (e.g. dog barking, helicopter noise) if
possible. Observations were recorded when intrusive noise was unavoidable.
(i)
Noise monitoring was cancelled in
the presence of fog, rain, wind with a steady speed exceeding 5m/s, or wind
with gusts exceeding 10m/s.
3.2.6 Maintenance and Calibration
(a)
The microphone
head of the sound level meter was cleaned with soft cloth
at regular intervals.
(b)
The meter
and calibrator were sent to the supplier or HOKLAS laboratory to check and calibrate
at yearly intervals.
(c)
Calibration
certificates of the sound level meters and acoustic calibrators are provided
in Appendix E.
Monitoring Schedule for the Reporting Month
3.2.7
The schedule for environmental monitoring in July 2020 is provided in Appendix F.
3.3
Landscape and Visual
3.3.1
As per the EM&A Manuals,
the landscape and visual mitigation measures shall be implemented
and site inspections should be undertaken once every two weeks during the construction
period. A summary of the implementation status is presented in Section 6.
4.1.1 The Contractor has implemented environmental mitigation
measures and requirements as stated in the EIA Reports, the EP and EM&A Manuals.
The implementation status of the environmental mitigation measures during the
reporting period is summarized in Appendix C.
Status of required submissions under the EP during the
reporting period is summarised in Table 4.1.
Table 4.1 Status of Required Submission under Environmental Permit
|
EP Condition
|
Submission
|
Submission
Date
|
|
Condition 3.4 of
EP- 457/2013/C
and
Condition 3.4 of
FEP-01/457/2013/C
|
Monthly EM&A Report
for June 2020
|
14 July 2020
|
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
|
20.9
|
11.2 – 29.2
|
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
|
61.0
|
58.7 – 63.4
|
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
|
66.3
– 67.6
|
75
|
|
E-N21a
|
60.1
– 68.0
|
75
|
5.2.2 Three (3) noise-related complaints were received in the reporting month. Based
on the investigation results from two finalized investigation reports, the noise nuisance from the construction site was minimized with the
proper implementation of mitigation measures during the non-restricted hour and
complied with the condition of valid Construction Noise Permit during the
restricted hour. However,
the latest complaint is under investigation and will be reported in next
reporting period. Therefore, three action levels of construction noise were triggered, and the two investigation reports were finalized on 31 July and 6 August 2020.
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 55,321 m3
of inert C&D material was generated, 51,015 m3
inert C&D material was disposed at the Public Fills, 4,306 m3 was
reused in other contract in the reporting month. 56,340
kg general refuse was generated
and sent to NENT Landfill in the reporting month. No paper/cardboard packaging,
metals and plastics were collected by recycle contractor in the reporting month.
No chemical waste was collected by licensed contractor in the reporting
period. No Type 1, Type 2 and 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 2, 15 and 29 July 2020. A summary of the site inspection is provided in Appendix C. The observations
and recommendations made during the site inspections are presented in Table 6.1.
6.1.1 Site inspections
were carried out on a weekly basis to monitor the implementation of proper environmental
pollution control and mitigation measures for the Project. A summary of the mitigation
measures implementation schedule is provided in Appendix C.
6.1.2
In
the reporting month, 5 site inspections were carried out on 2, 8, 15, 24 and 29 July 2020. Joint
inspections with the IEC, ER, the Contractor and the ET were conducted on 15 July 2020. In
addition, no joint inspection with EPD, ER and the Contractor was conducted in July 2020 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
|
2 July 2020
|
· Proper NRMM label was not observed on the roller at Covered Walkway.
The Contractor was reminded to provide a proper NRMM label on the roller.
|
The item was rectified
on 6 July 2020.
|
|
Noise
|
8
July 2020
|
Reminder:
· The Contractor was
reminded to replace the damaged environmental permit and construction noise
permit at Kai Tak Barging Point.
|
The item was rectified
on 13 July 2020.
|
|
Water
Quality
|
2 July 2020
|
· Chemicals at Ma Tau Kok and Underpass were
observed stored without secondary containment. The Contractor was reminded to
provide a proper measure for chemicals storage to prevent accidental spillage.
|
The item was rectified
on 7 July 2020.
|
|
·
Seepage near the
seawall at the north platform. The Contractor was reminded to provide proper
maintenance for silt curtain.
|
The item was rectified
on 7 July 2020.
|
|
8 July 2020
|
·
Drip tray was not
placed under the air compressor for oil interception at Underpass. The
Contractor was reminded to provide drip tray for air compressor to prevent
accidental oil spillage.
|
The item was rectified
on 9 July 2020.
|
|
15 July 2020
|
·
The hole of drip tray was not sealed by the plug
at Ma Tau Kok. The Contractor was reminded to put
the plug to seal the hole for oil spillage prevention.
|
The item was rectified
on 16 July 2020.
|
|
· U-channel near
the site entrance of Covered Walkways was blocked by general refuse. The
Contractor was reminded to remove the blockage at U-channel to maintain the
flooding protection.
|
The item was rectified
on 20 July 2020.
|
|
24 July 2020
|
· The hole of
drip tray was unsealed at Ma Tau Kok. The
Contractor was reminded to seal the hole of drip tray to prevent oil spillage.
|
The item was rectified
on 27 July 2020.
|
|
· The canvas
erected between the edge of Steel Platform and vessel was observed damaged.
The Contractor was reminded to replace proper canvas to prevent splashing of
material drop into the surrounding water.
|
The item was rectified
on 27 July 2020.
|
|
29 July 2020
|
· Inadequate
treatment was observed in the AquaSed at Ma Tau Kok. The Contractor was reminded to provide proper maintenance
for the AquaSed to maintain the effectiveness of
wastewater treatment.
|
The item was rectified
on 30 July 2020.
|
|
· Chemical was
observed stored without drip tray at Underpass. The Contractor was reminded
to provide a drip tray for chemical storage.
|
The item will
be followed up in next reporting period.
|
|
Waste/
Chemical Management
|
2 July 2020
|
· Overflow of general refuse was observed at Kai Tak and Depressed Road.
The Contractor was reminded to remove the waste regularly for site tidiness.
|
The item was rectified
on 6 July 2020.
|
|
8 July 2020
|
·
Overflow of general
refuse was observed at Kai Tak. The
Contractor was reminded to remove the general refuse regularly for site
tidiness.
|
The item was rectified on 10
July 2020.
|
|
24 July 2020
|
Reminder:
·
The Contractor was
reminded to put the canvas sheet underneath the breaker’s head after used to
prevent oil leakage on the ground surface.
|
The item was rectified on 28
July 2020.
|
|
Land
Contamination
|
Nil
|
Nil
|
Nil
|
|
Landscape
&
Visual
|
Nil
|
Nil
|
Nil
|
|
Permits/
Licenses
|
8
July 2020
|
Reminder:
· The Contractor
was reminded to replace the damaged environmental permit and construction
noise permit at Kai Tak Barging Point.
|
The item was rectified
on 13 July 2020.
|
6.1.3
Most of follow-up actions requested by Contractor's ET and IEC during the site
inspection were undertaken as reported by the Contractor and confirmed in the following weekly site inspection
conducted during the reporting period. No follow-up action requested by EPD
during the site inspection in the reporting month.
6.2.1
All 24-hour TSP result was below the Action and Limit Levels at all
monitoring locations in the reporting month.
6.2.2
All 1-hour TSP result was below the Action and Limit Levels at all monitoring
locations in the reporting month.
6.2.3 Three (3) noise-related complaints were received in the reporting month. Based
on the investigation results from two finalized investigation reports, the noise nuisance from the construction site was minimized with the
proper implementation of mitigation measures during the non-restricted hour and
complied with the condition of valid Construction Noise Permit during the
restricted hour. However,
the latest complaint is under investigation and will be reported in next
reporting period. Therefore, three action levels of construction noise were triggered, and the two investigation reports were finalized on 31 July and 6 August 2020.
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 Three (3) complaints received by Highway Department, Government Hotline 1823 and Environmental
Protection Department for noise and referred to the Contractor on 20 and 21 July, 28 July and 30 July 2020 respectively
for complaint investigation, the investigation reports for complaint received
by Highway Department and Government Hotline 1823 were finalized on 31 July and
6 August 2020. However, the latest complaint is under investigation and will
be reported in next reporting period.
6.4.2 Cumulative statistics on notification of complaint
is provided in Appendix J
6.5
Summary of Environmental Summon and Successful Prosecutions
6.5.1 No environmental related prosecution or notification
of summons was received in the reporting month. Cumulative statistics on notification
of summons and successful prosecutions is provided in Appendix J.
7.1.1
The major construction works between August and
October 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, roof slab construction at cut &
cover, underpass and depressed road;
·
Backfilling works and ELS removal at cut & cover,
underpass and depressed road;
·
Dismantle of working platform;
·
ELS removal at Underpass
|
|
Ma
Tau Kok
|
·
TTM implementation;
·
Rock excavation;
·
Pipe piling works for cut and cover tunnel;
·
Fresh water pipe installation works;
·
Constrcution of MTK east wall;
·
Constrcution of traffic deck;
·
Covered walkway construction
|
|
Kowloon
Bay
|
·
Excavation for stage 1 underwater tunnel;
·
S6 ELS installation;
·
Temporary Grouting;
·
Backfilling and ELS removal works;
·
Blinding layer, base slab and wall construction;
·
Removal of gas pipe line
|
|
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 August 2020 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
Three (3) noise-related complaints were received in the reporting month. Based
on the investigation results from two finalized investigation reports, the noise nuisance from the construction site was minimized with the
proper implementation of mitigation measures during the non-restricted hour and
complied with the condition of valid Construction Noise Permit during the
restricted hour. However,
the latest complaint is under investigation and will be reported in next
reporting period. Therefore, three action levels of construction noise were triggered, and the two investigation reports were finalized on 31 July and 6 August 2020.
8.1.5
No Limit Level exceedance for noise was recorded
at all monitoring stations in the reporting month.
8.1.6 5 nos. of environmental
site inspections and no site inspections with EPD were carried out in July 2020. Recommendations on remedial actions were given to the Contractor for
the deficiencies identified during the site audit.
8.1.7
Three (3) complaints received by Highway Department, Government Hotline 1823 and Environmental
Protection Department for noise and referred to the Contractor on 20 and 21 July, 28 July and 30 July 2020 respectively
for complaint investigation, the investigation reports for complaint received
by Highway Department and Government Hotline 1823 were finalized on 31 July and
6 August 2020. However, the latest complaint is under investigation and will
be reported in next reporting period.
8.1.8
No
notification of summons and successful prosecution were received in the
reporting month.
8.2.1
According to the environmental site inspections performed in the reporting
month, the following recommendations were provided:
Air Quality Impact
· The Contractor was reminded to provide a proper NRMM label on the roller.
Construction Noise Impact
· The Contractor was reminded to replace the damaged construction noise
permit.
Water Quality Impact
· The Contractor was reminded to provide a proper measure for chemicals
storage to prevent accidental spillage.
· The Contractor was reminded to provide proper maintenance for silt
curtain.
·
The Contractor was reminded to provide drip
tray for air compressor to prevent accidental oil spillage.
· The Contractor was reminded to put the plug to seal the hole for oil
spillage prevention.
· The Contractor was reminded to remove the blockage at U-channel to
maintain the flooding protection.
· The Contractor was reminded to replace proper canvas to prevent
splashing of material drop into the surrounding water.
· The Contractor was reminded to provide proper maintenance for the AquaSed to maintain the effectiveness of wastewater
treatment.
Chemical
and Waste Management
· The Contractor was reminded to remove the waste regularly for site
tidiness.
· The Contractor was reminded to put the canvas sheet underneath the
breaker’s head after used to prevent oil leakage on the ground surface.
Landscape & Visual Impact
· No specific observation was identified in the reporting month.
Permits/licenses
· The Contractor was reminded to replace the damaged environmental permit.
_11_8_2020_files/image010.jpg)
_11_8_2020_files/image011.jpg)
_11_8_2020_files/image012.jpg)
_11_8_2020_files/image013.jpg)