EXECUTIVE SUMMARY
I.
Introduction
This
is the 12th 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 01/08/2020
to 31/08/2020.
II.
Summary of Main Works Undertaken and Key Measures Implemented
The
main construction works carried out in the reporting period were as follow:
¡P
Drill and Blast excavation;
¡P
Mucking out from tunnel;
¡P
Construction of spoil basin;
¡P
Construction of noise enclosure;
¡P
Shaft installation;
¡P
Extensive grouting.
III.
Summary of Exceedances, Investigation and Follow-up
No
Action and Limit Level exceedance was recorded for construction dust monitoring
in the reporting month.
Two
(2) 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. 3 July 2020). The investigation
report for the complaint was finalized on 18 August 2020.
Two (2) noise-related and One (1)
landscape and visual related complaints were received in the reporting month.
The complaint cases in August 2020 are summarized in Table I.
Table I Environmental
Complaints Log
Complaint Log No. |
Date of Complaint |
Received From |
Nature of Complaint |
Status |
EC019_CKRCT20200703_063 |
3rd July
2020 |
Contract Complaint
Hotline |
Construction Noise |
Investigation report
was finalized on 18 August 2020. |
EC025_CKRCT20200809_076 |
9th August
2020 |
Contract Complaint
Hotline |
Landscape and Visual |
Investigation report
was finalized on 31
August 2020. |
EC026_CKRCT20200814_078 |
14th
August 2020 |
Contract Complaint
Hotline |
Construction Noise |
Investigation report
was finalized on 31 August 2020. |
EC027_CKRCT20200825_083 |
25th
August 2020 |
Letter |
Construction Noise |
Investigation report
was finalized on 2 September 2020. |
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
Parts
of the work areas at Ma Tau Kok under Contract No. HY/2014/07 Central Kowloon
Route ¡V Kai Tak West were handed over to Contract No. HY/2018/08 Central
Kowloon Route ¡V Central Tunnel on 15 July 2020. The construction works for
Contract No. HY/2018/08 at Ma Tau Kok were commenced on 3 August 2020.
The
corresponding construction dust and noise monitoring locations (i.e. E-A14a,
E-N12a and E-N21a) are now covered by Contract No. HY/2014/07. The monitoring
results at E-A14a, E-N12a and E-N21a in the reporting month are presented in
the monthly EM&A Reports prepared Contract No. HY/2014/07.
VI.
Future Key Issues
The
main works will be anticipated in the next reporting period are as follow:
¡P
Drill and Blast excavation;
¡P
Mucking out from tunnel;
¡P
Construction of spoil basin;
¡P
Construction of noise enclosure;
¡P
Shaft Installation;
¡P
Construction of CLP Transformer room;
¡P
Probe grouting (at Yau Ma Tei);
¡P
Drill and break for pilot tunnel (at Yau Ma Tei);
¡P
Extensive grouting.
The
recommended mitigation measures corresponding to the main works in the next
reporting period are listed as follow:
¡P
Mitigation measures in form of regular watering under a good site
practice should be adopted, particularly for the earthwork and breaking
activities;
¡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 (July 2020) |
14 August 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
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
Construction of spoil basin;
¡P
Construction of noise enclosure;
¡P
Shaft installation;
¡P
Extensive grouting.
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-RE0533-20 |
22 Jun 2020 |
15 Nov 2020 |
Construction Noise Permit (Chi Man Street) |
GW-RN0663-20 |
21 Aug 2020 |
20 Nov 2020 |
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 |
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 coordinates of SKH Tsoi Kung Po
Secondary School can be represented as follow:
Latitude: 22.314719, Longitude:
114.180694 (HK80 Geographical Coordinates)
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 |
2456 |
Portable direct reading dust meter (1-hour TSP) |
Sibata |
LD-5R |
882148 |
Portable direct reading dust meter (1-hour TSP) |
Sibata |
LD-5R |
882149 |
*Notes:
Model LD- 5R dust
meter (882149) was used on 25th August 2020 for1- hour TSP
monitoring.
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 |
4358443 |
Sound Level Meter |
Casella |
CEL-63X |
4181568 |
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: continuous 5 minutes interval
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 |
24 |
16-34 |
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 |
30 |
16-46 |
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 |
67.7-69.9 |
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 |
Nil |
Nil |
Nil |
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 |
EC019_CKRCT20200703_063 |
3rd July 2020 |
Contract Complaint Hotline |
Construction Noise |
Investigation report was
finalized on 18 August 2020. |
EC025_CKRCT20200809_076 |
9th August 2020 |
Contract Complaint Hotline |
Landscape and Visual |
Investigation report was
finalized on 31 August 2020. |
EC026_CKRCT20200814_078 |
14th August 2020 |
Contract Complaint Hotline |
Construction Noise |
Investigation report was
finalized on 31 August 2020. |
EC027_CKRCT20200825_083 |
25th August 2020 |
Letter |
Construction Noise |
Investigation report was
finalized on 2 September 2020. |
Table 6.1
Status of Required Submission under Environmental Permit
EP Condition |
Submission |
Submission Date |
3.4 |
Monthly EM&A Report (July 2020) |
14 August 2020 |
¡P
Drill and Blast excavation;
¡P
Mucking out from tunnel;
¡P
Construction of spoil basin;
¡P
Construction of noise enclosure;
¡P
Shaft Installation;
¡P
Construction of CLP Transformer room;
¡P
Probe grouting (at Yau Ma Tei);
¡P
Drill and break for pilot tunnel (at Yau Ma Tei);
¡P
Extensive grouting.
¡P
Mitigation measures in form of regular watering under a good site
practice should be adopted, particularly for the earthwork and breaking activities;
¡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 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 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.