EXECUTIVE
SUMMARY
I.
Introduction
This
is the 16th 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 01/12/2020
to 31/12/2020.
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 break for pilot tunnel;
¡P
Mucking out from tunnel;
¡P
Site and shaft installation.
Ma Tau Kok
¡P
Reinforcement 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.
Three
(3) 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.
Two (2) noise-related and one (1) dust
and noise-related complaints were received in the reporting month. The
complaint cases in December 2020 are summarized in Table I.
Table I Environmental
Complaints Log
Complaint Log No. |
Date of Complaint |
Received From |
Nature of Complaint |
Status |
EC038_CKRCT20201208_135 |
8th
December 2020 |
Contract Complaint
Hotline |
Dust and Construction
Noise |
Investigation report
was finalized on 23 December 2020. |
EC039_CKRCT20201211_142 |
11th
December 2020 |
Contract Complaint
Hotline |
Construction Noise |
Investigation report
was finalized on 23 December 2020. |
EC040_CKRCT20201228_151 |
28th
December 2020 |
Contract Complaint
Hotline |
Construction Noise |
Investigation report
was finalized on 5 January 2021. |
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
Drill and break Excavation;
¡P
Reinforcement 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
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 (November
2020) |
14 December 2020 |
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
Figure 2.2 The Location of the Construction
Dust and Noise Monitoring Stations
Figure 2.3 The Location of the Construction
Dust and Noise Monitoring Stations
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 break for pilot tunnel;
¡P
Mucking out from tunnel;
¡P
Site and shaft installation.
Ma Tau Kok
¡P
Reinforcement for the access shaft;
¡P
Site 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-RE1033-20 |
1 Dec 2020 |
31 Dec 2020 |
Construction Noise Permit (Yau Ma Tei Construction site) |
GW-RE1069-20 |
8 Dec 2020 |
7 Feb 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 |
57 |
32-81 |
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 |
65 |
44-91 |
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) |
2Corrected Noise Level, dB(A), Leq (30 mins)
|
Action
Level |
3Limit Level dB(A), Leq
(30 mins) |
M-N3 |
68.7-69.2 |
NA |
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); Corrected
Noise Level =10* log (10^ (Measured Noise Level/10) ¡V 10^ (Baseline
Noise Level/10));
Table 4.1 Observations
and Recommendation of Site Inspection in the Reporting Period
Environmental
Aspect |
Date |
Observations
and Recommendations |
Follow-up
Actions |
Air Quality |
15 December 2020 |
-All dump trucks shall be fully covered by impervious sheeting
before leaving the site. |
The item was rectified by the Contractor on 22 December 2020. |
22 December 2020 |
-Where practicable, vehicle washing facilities with high pressure
water jet should be provided at vehicle exit point. |
The item was rectified by the Contractor on 29 December 2020. |
|
Noise |
Nil |
Nil |
Nil |
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 |
EC038_CKRCT20201208_135 |
8th
December 2020 |
Contract Complaint
Hotline |
Dust and Construction
Noise |
Investigation report
was finalized on 23 December 2020. |
EC039_CKRCT20201211_142 |
11th
December 2020 |
Contract Complaint
Hotline |
Construction Noise |
Investigation report
was finalized on 23 December 2020. |
EC040_CKRCT20201228_151 |
28th
December 2020 |
Contract Complaint
Hotline |
Construction Noise |
Investigation report
was finalized on 5 January 2021. |
Table 6.1
Status of Required Submission under Environmental Permit
EP Condition |
Submission |
Submission Date |
3.4 |
Monthly EM&A Report (November 2020) |
14 December 2020 |
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
Drill and break Excavation;
¡P
Reinforcement 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
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
All dump trucks shall be fully
covered by impervious sheeting before leaving the site.
¡P
Where practicable, vehicle washing
facilities with high pressure water jet should be provided at vehicle exit
point.
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
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.