EXECUTIVE SUMMARY
I.
Introduction
This
is the 18th 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/C) and in
accordance with the EM&A Manual during the reporting period from 01/02/2021
to 28/02/2021.
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
Drill and Blast excavation;
¡P
Mucking out from tunnel;
¡P
Site and shaft installation;
¡P
Erection of site office.
Yau Ma Tei
¡P
Drill and Blast excavation;
¡P
Mucking out from tunnel;
¡P
Site and shaft installation.
Ma Tau Kok
¡P
Strengthening for the access shaft;
¡P
Site and shaft installation.
III.
Summary of Exceedances, Investigation and Follow-up
No Action
and Limit Level exceedance was recorded for construction dust monitoring in the
reporting month.
Four
(4) Action Level exceedances were recorded for construction noise
due to the noise-related complaints. 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.25 January 2021). The investigation
report for the complaint was finalized on 26 February 2021.
Four (4) noise-related and one (1)
air-related complaints were received in the reporting month. The complaint
cases in February 2021 are summarized in Table
I.
Table I Environmental
Complaints Log
Complaint Log No. |
Date of Complaint |
Received From |
Nature of Complaint |
Status |
EC043_CKRCT20210125_162 |
25th
January 2021 |
Contract Complaint
Hotline |
Construction Noise |
Investigation report
was finalized on 26 February 2021 |
EC044_CKRCT20210203_166 |
3rd
February 2021 |
Contract Complaint
Hotline |
Construction Noise |
Investigation report
was finalized on 8 March 2021 |
EC045_CKRCT20210218_170 |
18th
February 2021 |
Contract Complaint
Hotline |
Air |
Under investigation
and the investigation results will be reported in the subsequent Monthly
EM&A Report. |
EC046_CKRCT20210220_171 |
20th
February 2021 |
Contract Complaint
Hotline |
Construction Noise |
Investigation report
was finalized on 8 March 2021 |
EC047_CKRCT20210225_177 |
25th
February 2021 |
1823 |
Construction Noise |
Under investigation
and the investigation results will be reported in the subsequent Monthly
EM&A Report. |
EC48_ CKRCT 20210226_180 |
26th
February 2021 |
Contract Complaint
Hotline |
Construction Noise |
Under investigation
and the investigation results will be reported in the subsequent Monthly
EM&A Report. |
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
Drill and Blast excavation;
¡P
Mucking out from tunnel;
¡P
Site and shaft Installation;
¡P
Erection of site office.
Yau Ma Tei
¡P
Drill and break for pilot tunnel;
¡P
Mucking out from tunnel;
¡P
Site and shaft installation.
Ma Tau Kok
¡P
Strengthening for the access shaft;
¡P
Site and shaft installation.
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
Loading/unloading activities should be carried out inside the full
enclosure of mucking out points to minimize the noise emission;
¡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.
The
following EP submissions (EP-457/2013/C) 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 (January 2021) |
11 February 2021 |
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
Table 3.2 ¡V Summary of 24-hour TSP Monitoring
Results in the Reporting Period
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 Tay 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. David Hung |
3565 4371 |
¡P
Drill and Blast excavation;
¡P
Mucking out from tunnel;
¡P
Site and shaft installation;
¡P
Erection of site office.
Yau Ma Tei
¡P
Drill and Blast excavation;
¡P
Mucking out from tunnel;
¡P
Site and shaft installation.
Ma Tau Kok
¡P
Strengthening for the access shaft;
¡P
Site and shaft installation.
Table 1.2 Environmental
Licenses, Notification and Permits Summary
Permit/ Notification/ License |
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 |
6 Aug 2019 |
NA |
Chemical Waste Producer Registration |
5111-236-B2557-02 |
25
Sep 2019 |
NA |
Construction Noise Permit (Ho Man Tin Construction site) |
GW-RE1128-20 |
1 Jan 2021 |
31 Mar 2021 |
Construction Noise Permit (Yau Ma Tei Construction site) |
GW-RE1069-20 |
8 Dec 2020 |
7 Feb 2021 |
Construction Noise Permit (Yau Ma Tei Construction site) |
GW-RE0094-21 |
8 Feb
2021 |
7 Apr
2021 |
Construction Noise Permit (Ka Tak Barging Point) |
GW-RE0099-21 |
10 Feb
2021 |
9 May
2021 |
Construction Noise Permit (Delivery of TBM to HMT construction
site) |
GW-RE0153-21 |
26 Feb
2021 |
31 May
2021 |
Construction Noise Permit (Ma Tau Kok
Construction site) |
GW-RE1102-20 |
4 Jan
2021 |
3 Mar
2021 |
Water Discharge License |
WT00034873-2019 |
22 Nov 2019 |
30 Nov 2024 |
WT00035436-2019 |
2 Apr 2020 |
30 Apr 2025 |
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 M-N12 (i.e. Grand Waterfront Tower 3) was
not available for impact dust and noise monitoring, therefore impact monitoring
was conducted at M-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 M-A14 (i.e. Wyler Gardens) and M-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 |
Portable direct reading dust meter (1-hour TSP) |
Sibata |
LD-5R |
620480 |
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 |
5230736 |
Sound Level Meter |
Casella |
CEL-63X |
3576127 |
Monitoring Methodology
a) Free field
measurements was 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 |
61 |
50-78 |
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 |
92 |
61-141 |
153 |
260 |
Table 3.3 Summary
of Construction Noise Monitoring Results in the Reporting Period
Station ID |
1Measured Noise Level, dB(A), Leq (30 mins) |
1 2Corrected Noise Level, dB(A), Leq (30 mins)
|
Action
Level |
3Limit Level dB(A), Leq
(30 mins) |
M-N3 |
69.2-69.6 |
64.1-64.9 |
When one documented compliant
is received |
For Schools: 70dB(A) during normal teaching
period and 65 dB(A) during examination periods |
Notes:
1. Free field noise levels
were adjusted with a correlation of +3 dB(A);
2. Corrected Noise Level was
applied on 2 and 8 Feb 2021; 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 Limit Level was 70 dB(A)
for teaching period (from 9 to 28 Feb 2021) and 65 dB(A) for examination period
(from 1 to 8 Feb 2021)
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 |
Noise |
Nil |
Nil |
Nil |
Water Quality |
Nil |
Nil |
Nil |
Waste Management |
9th February 2021 |
-All Chemical materials should be stored in drip tray. |
The item was rectified by the Contractor on 16th
February 2021 |
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 |
EC043_CKRCT20210125_162 |
25th
January 2021 |
Contract Complaint
Hotline |
Construction Noise |
Investigation report
was finalized on 26 February 2021 |
EC044_CKRCT20210203_166 |
3rd
February 2021 |
Contract Complaint
Hotline |
Construction Noise |
Investigation report
was finalized on 8 March 2021 |
EC045_CKRCT20210218_170 |
18th
February 2021 |
Contract Complaint
Hotline |
Air |
Under investigation
and the investigation results will be reported in the subsequent Monthly
EM&A Report. |
EC046_CKRCT20210220_171 |
20th
February 2021 |
Contract Complaint
Hotline |
Construction Noise |
Investigation report
was finalized on 8 March 2021 |
EC047_CKRCT20210225_177 |
25th
February 2021 |
1823 |
Construction Noise |
Under investigation
and the investigation results will be reported in the subsequent Monthly
EM&A Report. |
EC48_ CKRCT 20210226_180 |
26th
February 2021 |
Contract Complaint
Hotline |
Construction Noise |
Under investigation
and the investigation results will be reported in the subsequent Monthly
EM&A Report. |
Table 6.1
Status of Required Submission under Environmental Permit
EP Condition |
Submission |
Submission Date |
3.4 |
Monthly EM&A Report (January 2020) |
11 February 2021 |
Ho Man
Tin
¡P
Drill and Blast excavation;
¡P
Mucking out from tunnel;
¡P
Site and shaft Installation;
¡P
Erection of site office.
Yau Ma Tei
¡P
Drill and break for pilot tunnel;
¡P
Mucking out from tunnel;
¡P
Site and shaft installation.
Ma Tau Kok
¡P
Strengthening for the access shaft;
¡P
Site and shaft installation.
¡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
Loading/unloading activities should be carried out inside the full
enclosure of mucking out points to minimize the noise emission;
¡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.
Air Quality Impact
¡P
No specific observation was
identified in the reporting month.
Construction Noise Impact
¡P
No specific observation was
identified in the reporting month.
Water Quality Impact
¡P
No specific observation was
identified in the reporting month.
Waste Management
¡P
All Chemical materials should
be stored in drip tray.
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.