I.
Introduction
This
is the 46th Monthly EM&A Report prepared by Fugro
Technical Services Limited for the Contract No. HY/2018/08 Central Kowloon
Route ¡V Central Tunnel. The Contract No. HY/2018/08 commenced on 19 September
2019. This report summarized the monitoring results and audits findings of the
EM&A programme under the issued EP (EP No.: EP-457/2013/D) and in
accordance with the EM&A Manual during the reporting period from 01/06/2023
to 30/06/2023.
II.
Summary of Main Works Undertaken and Key Measures Implemented
The
main construction works carried out in the reporting period were as follow:
Ho Man Tin
¡P
Underbreak scaling and smoothing works;
¡P
Invert, lining and OHVD construction;
¡P
Internal structure for ventilation adit and cavern;
¡P
Pipe pile wall construction;
¡P
Dismantling of shaft utilities;
¡P
Shaft slipform construction;
¡P
ELS excavation
¡P
Site and shaft installation.
Yau Ma Tei
¡P
Drill and break excavation;
¡P
Drill and blast excavation;
¡P
Underbreak scaling and smoothing works;
¡P
Invert, lining and OHVD construction;
¡P
Mucking out from tunnel;
¡P
Site and shaft installation.
Ma Tau Kok
¡P
Drill and blast excavation;
¡P
Drill and break excavation;
¡P
TBM pilot tunnel enlargement;
¡P
Underbreak scaling and smoothing works;
¡P
Invert, lining and OHVD construction
¡P
Mucking out from tunnel;
¡P
Site and shaft installation.
Ka Tak
Barging Point
¡P
Spoil handling and disposal.
Sheung Lok Street
¡P Concreting and importing fill material by drop pipe.
III.
Summary of Exceedances, Investigation and Follow-up
No
Action and Limit Level exceedance was recorded for construction dust monitoring
in the reporting month.
One
(1) Action Level exceedance was recorded for construction
noise due to the noise-related complaints received in the reporting month. No
Limit Level exceedance was recorded for construction noise monitoring in the
reporting month.
IV. Complaint Handling, Prosecution and Public Engagement.
One (1) noise-related
complaint was received in the last reporting month (i.e. 3rd May
2023). The investigation report for the complaint on 3rd May 2023
was finalized on 28th June 2023.
One (1) noise-related
complaint (i.e. 2nd June 2023) was received in the reporting month.
The complaint cases in May and June
2023 are summarized in Table I.
Table
I Environmental Complaints
Log
Complaint Log No. |
Date of Complaint |
Received From |
Nature of Complaint |
Status |
3rd May 2023 |
The Contractor Hotline |
Construction Noise |
Investigation report was
finalized on 28th June 2023. |
|
EC172_CKRCT20230602_672 |
2nd June 2023 |
Email |
Construction Noise |
Investigation report was
finalized on 21st June 2023. |
No
notification of summons and prosecutions were received in the reporting period.
No
public engagement activities were conducted in the reporting period.
V.
Reporting Change
There
were no reporting changes during the reporting month.
VI.
Future Key Issues
The
main works will be anticipated in the next reporting period are as follow:
Ho Man Tin
¡P
Underbreak scaling and smoothing works;
¡P
Invert, lining and OHVD construction;
¡P
Internal structure for ventilation adit and cavern;
¡P
Finshing
for shaft slipform;
¡P
ELS excavation;
¡P
Site and shaft installation.
Yau Ma Tei
¡P
Drill and break excavation;
¡P
Drill and blast excavation;
¡P
Underbreak scaling and smoothing works;
¡P
Invert, lining and OHVD construction;
¡P
Mucking out from tunnel;
¡P
Site and shaft installation.
Ma Tau Kok
¡P
Drill and blast excavation;
¡P
Drill and break excavation;
¡P
TBM pilot tunnel enlargement;
¡P
Underbreak scaling and smoothing works;
¡P
Invert, lining and OVHD construction;
¡P
Mucking out from tunnel;
¡P
Site and shaft installation.
Ka Tak
Barging Point
¡P
Spoil handling and disposal.
Sheung Lok Street
¡P Concreting and importing fill material by drop pipe.
Ma Hang Chung Road
¡P Construction of drop pipe.
The
recommended mitigation measures corresponding to the main works in the next
reporting period are listed as follow:
¡P
Good relationship shall be maintained with the nearby sensitive
receivers/ stakeholders which may be affected by the construction works such as
providing better/ more detail information of the work nature and inform in
advance of the works to the nearby residents;
¡P
Any excavated, stockpile of dusty material or load of dusty
materials on a vehicle leaving a construction site should be covered entirely
by impervious sheeting;
¡P
All construction plants / machineries should be checked / serviced
on a regular basis during the courses of construction to minimize the emission
of noise generation and eliminate dark smoke emission;
¡P
All C&D materials generated should be transported and stored at
temporary storage area. Suitable materials should be sorted for reuse on-site;
¡P
Every vehicle shall be cleaned thorough at the designated wheel
washing area onsite;
¡P
Wastewater generated from drilling shall be properly collected for
reuse or treated by wastewater treatment facilities before discharge;
¡P
Provision of drip trays for equipment likely cause spillage of
chemical / fuel, and provide routine maintenance;
¡P
Erecting temporary noise barrier for noisy Powered Mechanical
Equipment (PME) and deployment of Quality Powered Mechanical Equipment (QPME)
as many as practicable;
¡P
Conditions in the Environmental Permit and License should be
followed;
¡P
All recommended mitigation measures specified in the approved EIA
Report and EM&A Manual shall be implemented;
¡P
All vehicles should be cleaned
before leaving the construction site to ensure no muddy deposited by them on
roads.
The
following EP submissions were submitted during the reporting month:
Table II Status of Required Submission under
Environmental Permit
EP Condition |
Submission |
Submission Date |
3.4 |
Monthly EM&A Report (May 2022) |
14 June 2023 |
Contents
1.3 Construction
Programme and Activities
1.4 Works undertaken
during the month
1.5 Status of
Environmental Licences, Notification and Permits
2.1 Construction Dust and Noise Monitoring Location
2.2 Construction Dust Monitoring
2.3 Construction Noise Monitoring
2.4 Construction Dust and Noise Monitoring Schedule
2.5 The Action and Limit Levels
3.1 Construction Dust Monitoring
3.2 Construction Noise Monitoring
5.1 Complaint Handling, Prosecution and Public Engagement
5.2 Summary of Environmental Non-Compliance
5.3 Summary of Monitoring Exceedance
Tables
Table I ¡V Environmental Complaints Log
Table II ¡V Status of Required Submission under
Environmental Permit
Table 1.1 ¡V Contact Information of Key Personnel
Table 1.2 ¡V Environmental Licenses, Notification
and Permits Summary
Table 2.1 ¡V Construction Dust and Noise
Monitoring Location
Table 2.2 ¡V Construction Dust Monitoring Equipment
Table 2.3 ¡V Construction Noise Monitoring Parameters, Frequency and Duration
Table 2.4 ¡V Construction Noise Monitoring Equipment
Table 3.1 ¡V Summary of 1-hour TSP Monitoring Results in the Reporting Period 8
Table 3.2 ¡V Summary of 24-hour TSP Monitoring Results in the Reporting Period 8
Table 3.3 ¡V Summary of Construction Noise
Monitoring Results in the Reporting Period
Table 4.1 ¡V Observations and Recommendation of
Site Inspection in the Reporting Period
Table 5.1 ¡V Environmental Complaints Log
Table 6.1 ¡V Status of Required Submission under Environmental Permit
Figures
Figure 1 The Site Layout Plan of the Contract
Figure 2.1 The Location of the Construction
Dust and Noise Monitoring Stations (Ho Man Tin)
Figure 2.2 The Location of the Construction
Dust and Noise Monitoring Stations (Ma Tau Kok)
Figure 2.3 The Location of the Construction
Dust and Noise Monitoring Stations (Yau Ma Tei)
Appendices
Appendix A Construction Programme
Appendix
B Project Organization Chart
Appendix
C Calibration Certificate for
Construction Dust Monitoring Equipment
Appendix
D Calibration Certificate for Construction
Noise Monitoring Equipment
Appendix
E Environmental Monitoring Schedule
Appendix
F Action and Limit Levels for Construction
Dust and Noise Monitoring
Appendix
G Construction Dust Monitoring
Results and Meteorological Observations
Appendix
H Construction Noise Monitoring Results
Appendix
I Event and Action Plan
Appendix J Implementation Status of Environment Mitigation Measures (Construction Phase)
Table 1.1
Contact
Information of Key Personnel
Party |
Position |
Name |
Telephone |
Highways Department (HyD) |
E13/CKR |
Mr. Joe Lam |
2762 3380 |
Arup-Mott MacDonald Joint Venture (AMMJV) |
Senior Resident Engineer |
Mr. Ben Poon |
3619 5967 |
ERM-Hong Kong, Limited (ERM) |
Independent Environmental Checker (IEC) |
Ms. Mandy To |
2271 3000 |
Bouygues Travaux Publics (BTP) |
Environmental
Manager |
Mr. Simon Wong |
9281 4346 |
Fugro Technical Services Limited |
ET
Leader |
Mr. Cyrus Lai |
3565 4442 |
¡P
Underbreak scaling and smoothing works;
¡P
Invert, lining and OHVD construction;
¡P
Internal structure for ventilation adit and cavern;
¡P
Pipe pile wall construction;
¡P
Dismantling of shaft utilities;
¡P
Shaft slipform construction;
¡P
ELS excavation
¡P
Site and shaft installation.
Yau Ma Tei
¡P
Drill and break excavation;
¡P
Drill and blast excavation;
¡P
Underbreak scaling and smoothing works;
¡P
Invert, lining and OHVD construction;
¡P
Mucking out from tunnel;
¡P
Site and shaft installation.
Ma Tau Kok
¡P
Drill and blast excavation;
¡P
Drill and break excavation;
¡P
TBM pilot tunnel enlargement;
¡P
Underbreak scaling and smoothing works;
¡P
Invert, lining and OHVD construction
¡P
Mucking out from tunnel;
¡P
Site and shaft installation.
Ka Tak
Barging Point
¡P
Spoil handling and disposal.
Sheung Lok Street
¡P Concreting and importing fill material by drop pipe.
Table 1.2 Environmental
Licenses, Notification and Permits Summary
Reference No |
Valid From |
Valid Till |
|
Form NB |
448930, 448970, 448971 |
Mid-Sep 2019 |
NA |
Billing Account for
Disposal of C&D waste |
Account no. 7034790 |
06 Aug 2019 |
NA |
Chemical Waste Producer
Registration (Ho Man Tin Construction site) |
5111-236-B2557-02 |
25 Sep 2019 |
NA |
Chemical Waste Producer
Registration (Yau Ma Tei
Construction site) |
5213-225-B2557-05 |
19 Apr 2021 |
NA |
Chemical Waste Producer
Registration (Ma Tau Kok Construction site) |
5213-247-B2557-06 |
19 Apr 2021 |
NA |
Construction
Noise Permit |
|||
Construction Noise Permit (Ho Man Tin
Construction site) |
GW-RE0544-23 |
24 May 2023 |
23 Jul 2023 |
Construction Noise Permit (Yau
Ma Tei Construction site) |
GW-RE0542-23 |
13 May 2023 |
12 Jul 2023 |
Construction Noise Permit (Yau
Ma Tei Construction site)1 |
GW-RE0431-23 |
23 Apr 2023 |
22 Jun 2023 |
Construction Noise Permit (Yau
Ma Tei Construction site) |
GW-RE0721-23 |
23 Jun 2023 |
22 Sep 2023 |
Construction Noise Permit (Ma Tau Kok Construction site) |
GW-RE0089-23 |
04 Feb 2023 |
03 Aug 2023 |
Construction Noise Permit (Ma Tau Kok Construction site)2 |
GW-RE0419-23 |
24
Apr 2023 |
23
Jun 2023 |
Construction Noise Permit (Ma Tau Kok Construction site) |
GW-RE0714-23 |
29
Jun 2023 |
28
Aug 2023 |
Construction Noise Permit (Kai Tak Barging Point) |
GW-RE0547-23 |
01 Jun 2023 |
30 Nov 2023 |
Construction Noise Permit (Sheung Lok
Street) |
GW-RE0580-23 |
22 May 2023 |
21 Jul 2023 |
Water
Discharge License |
|||
Water Discharge License |
WT00034873-2019 (Ho Man Tin Construction site) |
22 Nov 2019 |
30 Nov 2024 |
WT00035436-2019 (Portion 18) |
02 Apr 2020 |
30 Apr 2025 |
|
WT00037723-2021 (Yau Ma Tei
Construction site) |
07 Apr 2021 |
30 Apr 2026 |
|
WT00037883-2021 (Ma Tau Kok Construction site) |
30 Apr 2021 |
30 Apr 2026 |
|
WT00042304-2022 (Sheung Lok Street) |
13 Oct 2022 |
31 Oct 2027 |
Notes:
1 GW-RE0431-23 was superseded by GW-RE0721-23
since 23 June 2023.
2 GW-RE0419-23 was superseded by GW-RE0714-23
since 29 June 2023.
Table 2.1
Construction Dust and Noise Monitoring Locations
Dust Monitoring Station ID |
Noise Monitoring Station ID |
Monitoring Location |
M-A3 |
M-N3 |
SKH Tsoi Kung Po Secondary School |
/ |
E-N12a |
19 Hing Yan Street |
E-A14a |
E-N21a |
Block B of Merit Industrial Centre |
W-A6 |
/ |
Man Cheong building |
/ |
W-N18 |
Hydan Place |
/ |
W-N25A |
Prosperous Garden Block 1 |
Notes:
1. The dust and noise monitoring stations proposed in the
EM&A Manual for M-A6/ M-N6 (i.e. Ko Fai House, Kwun Fai Court) was not available
for impact dust and noise monitoring, therefore impact monitoring was conducted
at M-A3/ M-N3 as an alternative which was agreed by the ER, IEC and EPD;
2. The noise monitoring station proposed in the EM&A
Manual for E-N12 (i.e. Grand Waterfront Tower 3) was not available for impact
dust and noise monitoring, therefore impact monitoring was conducted at E-N12a
as an alternative which was agreed by the ER, IEC and EPD;
3. The dust and noise monitoring stations proposed in the EM&A
Manual for E-A14 (i.e. Wyler Gardens) and E-N21 (i.e Hang Chien Court
Block J) was not available for impact dust and noise monitoring, therefore
impact monitoring was conducted at E-A14a/ E-N21a as an alternative which was
agreed by the ER, IEC and EPD;
4. The dust monitoring stations proposed in the EM&A
Manual for W-A5 (i.e. The Coronation) was not available for impact dust
monitoring, therefore impact monitoring was conducted at W-A6 as an alternative
which was agreed by the ER, IEC and EPD.
Monitoring Requirement
Monitoring Equipment
Table 2.2 Construction
Dust Monitoring Equipment
Equipment |
Brand |
Model |
Serial No. |
High Volume Sampler (24-hour TSP) |
Tisch |
TE-5170 |
4388 |
Calibrator |
Tisch |
TE-5025A |
2154 |
2456 |
|||
Portable direct reading dust meter (1-hour TSP) |
Sibata |
LD-5R |
114892 |
Monitoring Methodology for HVS
¡P
Sufficient support is provided to secure the samplers against gusty
wind.
¡P
No two samplers are placed less than 2 meters apart.
¡P
The distance between the sampler and an obstacle, such as
buildings, is at least twice the height that the obstacle protrudes above the
sampler.
¡P
A minimum of 2 meters of separation from walls, parapets and
penthouses is required for rooftop samples.
¡P
A minimum of 2 meters separation from any supporting structure,
measured horizontally is required.
¡P
No furnaces or incineration flues are nearby.
¡P
Airflow around the samplers is unrestricted.
¡P
The samplers are more than 20 meters from the drip line.
¡P
Any wire fence and gate, to protect the sampler, should not cause
any obstruction during monitoring.
¡P
Permission must be obtained to set up the samplers and to obtain
access to the monitoring stations.
¡P
A secured supply of electricity is needed to operate the samplers.
Maintenance and Calibration for
HVS
Monitoring Methodology for Direct
Reading Dust Meter
a) Pulling up the air sampling inlet cover
b) Changing the Mode 0 to BG
c) Pressing Start/Stop switch
d) Turning the knob to SENSI.ADJ and press it
e) Pressing Start/Stop switch again
f) Returning the knob to the position MEASURE slowly
g) Pressing the timer set switch to set measuring time
h) Removing the cap and start the measurement
Maintenance and Calibration for
Direct Reading Dust Meter
Monitoring Requirement
Table 2.3
Construction Noise Monitoring Parameters, Frequency and Duration
Parameter |
Duration |
Frequency |
A-weighted equivalent continuous sound pressure level (Leq). L10 and L90 were also recorded |
30 minutes |
At least once per week |
Monitoring Equipment
Table 2.4 Construction
Noise Monitoring Equipment
Equipment |
Brand |
Model |
Serial No. |
Acoustic Calibrator |
Casella |
CEL-120/1 |
5230758 |
Sound Level Meter |
Casella |
CEL-63X |
0873599 |
Monitoring Methodology
a) Free field measurements were made at monitoring location M-N3. A correction of +3 dB(A) shall be made to the free field measurements.
b) The battery condition should be checked to ensure good functioning of the meter.
c) Parameters such as frequency weighting, the time weighting and the measurement time should set as follow:
(i) Frequency weighting: A
(ii) Time weighting: Fast
(iii) Measurement time: 30 minutes
d) Prior to and after noise measurement, the meter shall be calibrated using the calibrator for 94.0 dB at 1000 Hz. If the difference in the calibration level before and after measurement is more than 1.0 dB, the measurement will be considered invalid and repeat of noise measurement is required after re-calibration or repair of the equipment.
e) The wind speed at the monitoring station shall be checked with the portable wind meter. Noise monitoring should be cancelled in the presence of fog, rain, and wind with a steady speed exceeding 5 m/s, or wind with gusts exceeding 10 m/s.
f) Noise measurement should be paused during periods of high intrusive noise if possible and observation shall be recorded when intrusive noise is not avoided.
g) At the end of the monitoring period, the Leq, L10 and L90 should be recorded. In addition, site conditions and noise sources should also be recorded on a standard record sheet.
Maintenance and Calibration
a) The microphone head of the sound level meter and calibrator should be cleaned with a soft cloth at quarterly intervals.
b) The sound level meter and calibrator should be calibrated annually by a HOKLAS laboratory or the manufacturer.
The
calibration certificates for noise monitoring equipment are provided in Appendix
D.
Table 3.1 Summary
of 1-hour TSP Monitoring Results in the Reporting Period
Station ID |
Average (µg/m3) |
Range (µg/m3) |
Action Level (µg/m3) |
Limit Level (µg/m3) |
M-A3 |
43 |
28 -
58 |
333 |
500 |
Table 3.2 Summary
of 24-hour TSP Monitoring Results in the Reporting Period
Station ID |
Average (µg/m3) |
Range (µg/m3) |
Action Level (µg/m3) |
Limit Level (µg/m3) |
M-A3 |
31 |
26 -
36 |
153 |
260 |
Table 3.3 Summary
of Construction Noise Monitoring Results in the Reporting Period
Station ID |
Date |
1Measured Noise Level, dB(A), Leq (30 mins) |
2Corrected Noise Level, dB(A), Leq
(30 mins) |
Action
Level |
Limit Level
dB(A), Leq (30 mins) |
M-N3 |
6 June 2023 |
66.2 |
N/A |
When one documented complaint is received |
For Schools: 70dB(A) during normal teaching period and 65 dB(A) during examination periods |
12 June 2023 |
69.1 |
63.5 |
|||
21 June 2023 |
64.5 |
N/A |
|||
27 June 223 |
68.5 |
N/A |
Notes:
1. Free field noise levels
were adjusted with a correlation of +3 dB(A);
2. Corrected Noise Level =10*
log (10^ (Measured Noise Level/10) ¡V 10^ (Baseline Noise Level/10)), where the
Baseline Noise Level = 67.7 dB(A).
3. The
Measured Noise Level on 6 June 2023 is 66.2 dB(A), which is lower than the
Baseline Noise Level (67.7 dB(A))
Table 4.1 Observations
and Recommendation of Site Inspection in the Reporting Period
Environmental
Aspect |
Date |
Observations
and Recommendations |
Follow-up
Actions |
Air Quality |
Nil |
Nil |
Nil |
Nil |
Nil |
Nil |
|
Noise |
27
June 2023 |
The breaker tip should be wrapped with sound insulating material to reduce the noise impact. |
The
item was rectified by the Contractor on 27th June 2023 |
Water
Quality |
Nil |
Nil |
Nil |
Waste
Management |
Nil |
Nil |
Nil |
Landscape and Visual |
Nil |
Nil |
Nil |
Permit/ Licenses |
Nil |
Nil |
Nil |
Table 5.1 Environmental
Complaints Log
Complaint Log No. |
Date of Complaint |
Received From |
Nature of Complaint |
Status |
EC169_CKRCT20230503_647 |
3rd
May 2023 |
The
Contractor Hotline |
Construction Noise |
Investigation
report was finalized on 28th June 2023. |
EC172_CKRCT20230602_672 |
2nd
June 2023 |
Email |
Construction Noise |
Investigation
report was finalized on 21st June 2023. |
Table 6.1
Status of Required Submission under Environmental Permit
EP Condition |
Submission |
Submission Date |
3.4 |
Monthly EM&A Report (May 2023) |
14 June
2023 |
Ho Man Tin
¡P
Underbreak scaling and smoothing works;
¡P
Invert, lining and OHVD construction;
¡P
Internal structure for ventilation adit and cavern;
¡P
Finshing for shaft slipform;
¡P
ELS excavation;
¡P
Site and shaft installation.
Yau Ma Tei
¡P
Drill and break excavation;
¡P
Drill and blast excavation;
¡P
Underbreak scaling and smoothing works;
¡P
Invert, lining and OHVD construction;
¡P
Mucking out from tunnel;
¡P
Site and shaft installation.
Ma Tau Kok
¡P
Drill and blast excavation;
¡P
Drill and break excavation;
¡P
TBM pilot tunnel enlargement;
¡P
Underbreak scaling and smoothing works;
¡P
Invert, lining and OVHD construction;
¡P
Mucking out from tunnel;
¡P
Site and shaft installation.
Ka Tak Barging Point
¡P
Spoil handling and disposal.
Sheung Lok Street
¡P Concreting and importing fill material by drop pipe.
Ma Hang Chung Road
¡P Construction of drop pipe.
¡P
Good relationship shall be maintained with the nearby sensitive
receivers/ stakeholders which may be affected by the construction works such as
providing better/ more detail information of the work nature and inform in
advance of the works to the nearby residents;
¡P
Any excavated, stockpile of dusty material or load of dusty
materials on a vehicle leaving a construction site should be covered entirely
by impervious sheeting;
¡P
All construction plants / machineries should be checked / serviced
on a regular basis during the courses of construction to minimize the emission
of noise generation and eliminate dark smoke emission;
¡P
All C&D materials generated should be transported and stored at
temporary storage area. Suitable materials should be sorted for reuse on-site;
¡P
Every vehicle shall be cleaned thorough at the designated wheel
washing area onsite;
¡P
Wastewater generated from drilling shall be properly collected for
reuse or treated by wastewater treatment facilities before discharge;
¡P
Provision of drip trays for equipment likely cause spillage of
chemical / fuel, and provide routine maintenance;
¡P
Erecting temporary noise barrier for noisy Powered Mechanical
Equipment (PME) and deployment of Quality Powered Mechanical Equipment (QPME)
as many as practicable;
¡P
Conditions in the Environmental Permit and License should be
followed;
¡P
All recommended mitigation measures specified in the approved EIA
Report and EM&A Manual shall be implemented.
¡P
All vehicles should be cleaned
before leaving the construction site to ensure no muddy deposited by them on
roads.
Air Quality Impact
¡P No specific observation was identified in the reporting month.
Construction Noise Impact
¡P The breaker tip should be wrapped with sound insulating material to reduce the noise impact.
Water Quality Impact
¡P No specific observation was identified in the reporting month.
Waste Management
¡P No specific observation was identified in the reporting month.
Landscape and Visual Impact
¡P No specific observation was identified in the reporting month.
Permit/ Licenses
¡P No specific observation was identified in the reporting month.