1.
EXECUTIVE SUMMARY
Introduction
1.
This is the 41st
Environmental Monitoring and Audit (EM&A) Report prepared by the
Environmental Team (ET), Cinotech Consultants Ltd.,
for Contract No. ED/2018/04 ˇ§Trunk Road T2 and Infrastructure Works for
Developments at the Former South Apronˇ¨. This report summarized the monitoring
results and audits findings of the EM&A programme under the issued
Environmental Permit (EP) No. EP-458/2013/C and in accordance with the EM&A
Manual (AEIAR-173/2013) during the reporting month of September 2023.
Summary of Main Works Undertaken and Key Measures Implemented
2.
The main works undertaken during
the reporting period are as follows:
•
East Bound ˇV RC Structure
Construction, Lining
•
East Ventilation Building ˇV RC
Structure.
•
West Bound ˇVRC Structure
Construction, Pilot Tunnel Excavation, Lining
3.
Implementation of the key
mitigation measures during the reporting period are as follows:
Construction Noise
•
Construction activities were
scheduled to minimize noise nuisance to the nearby sensitive receiver.
•
Use of Quality Powered
Mechanical Equipment (QPME) on site.
•
Erected the noise barrier on
site.
Air Quality
•
Regularly watering on site to
avoid dust generation.
Landscape and Visual
•
Tree protection zones were
fenced off to protect the existing trees on site.
Environmental Monitoring Works
4.
Environmental monitoring for
the Project was performed in accordance with the EM&A Manual and the
monitoring results were checked and reviewed. Site Inspections/Audits were
conducted once per week. The implementation of the environmental mitigation
measures, Event Action Plans and environmental complaint handling procedures
were also checked.
5. Summary of the non-compliance (exceedance) in the reporting month
for the Project is tabulated in Table I.
Table I Non-compliance
(exceedance) Record
for the Project in the Reporting Month
|
Environmental Monitoring
|
No. of Non-compliance (Exceedance)
|
No. of Non-compliance (Exceedance)
due to Construction Activities of this
Project
|
Action Taken
|
|
Action Level
|
Limit Level
|
Action Level
|
Limit Level
|
|
Air Quality
|
0
|
0
|
0
|
0
|
N/A
|
|
Noise
|
1
|
0
|
0
|
0
|
Refer to App M
|
|
Marine Water Quality
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
|
Groundwater Level Monitoring (Piezometer Monitoring)
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
|
Ecological
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
|
Cultural Heritage
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
|
Landfill Gas
|
N/A(1)
|
N/A
|
N/A(1)
|
N/A
|
N/A
|
|
Note: (1): No
Action Level for Landfill Gas Monitoring.
|
Air Quality Monitoring
6. No Action/Limit Level exceedance for 1-hour TSP monitoring was
recorded.
7.
No Action Level exceedance and
no Limit Level exceedance was recorded for 24-hour TSP monitoring in the
reporting month.
Construction
Noise Monitoring
8.
One (1) Action Level exceedance
was recorded due to documented complaint in the reporting month. The Summary of
Documented Complaints in the Reporting Month is tabulated in Table III.
9.
No Limit Level exceedance for day
time construction noise monitoring were recorded in the reporting month. Detail
shall refer to Appendix N.
Water Quality Monitoring
10. Groundwater quality monitoring had been suspended since October 2019
upon the agreement by EPD. Further details should be founded at Section 4.1.
11. No marine water quality monitoring is required as no marine works
will be conducted at the Cha Kwo Ling and Lam Tin areas for this project.
12. As the construction activity is approximately 120m away from the
piezometer gate, no piezometer monitoring is required.
Waste
Management
13. Wastes generated from this Project include inert construction and
demolition (C&D) materials, and non-inert C&D materials. Details of
waste management data is presented in Appendix
H.
Ecological Monitoring
14. No coral monitoring is required as no marine works will be conducted
at the Cha Kwo Ling and Lam Tin areas for this project.
Fisheries Impact Monitoring
15. No specific fisheries monitoring programme is required during the
construction phase.
Monitoring
on Cultural Heritage
16. As the construction works of Cha Kwo Ling Tunnel from the end of
Trunk Road T2 to the TKOLTT at the Eastern Ventilation Building are located
more than 100m away from the Cha Kwo Ling Tin Hau temple, no monitoring on
cultural heritage is required.
Landscape and Visual Monitoring and Audit
17. The implementation of landscape and visual mitigation measures was
checked by a registered landscape architect. Recommended follow-up actions have
been discharged by the Contractor.
Details of the audit findings and implementation status are presented in
Section 12.
Landfill Gas Monitoring
18.
Monitoring of landfill gases
was commenced in December 2016. Since no excavation activity for this Project
was carried out within the Sai Tso Wan Landfill Consultation Zone in the
reporting month, no landfill gas monitoring is required
Hazard to Life Monitoring
19. No environmental
monitoring and audit is required as no hazard
assessment was conducted.
Environmental
Site Inspection
20. Joint weekly site inspections were conducted by representatives of
the Contractor, Engineer and Environmental Team. Details of the audit findings
and implementation status are presented in Section
12.
Key Information in the Reporting Month
21. Summary of key information in the reporting month is tabulated in Table II
Table
II Summary of Complaints,
Notifications of Summons and Successful Prosecutions in the Reporting Month
|
Event
|
Event Details
|
Action Taken
|
Status
|
|
Number
|
Nature
|
|
Complaints Received
|
1
|
Noise
|
Detail refer to App M
|
Closed
|
|
Notifications of
any summons & prosecutions received
|
0
|
--
|
N/A
|
N/A
|
22. Summary of complaints received in the reporting month is tabulated
in Table III.
Table III Summary of Complaints
Details in Reporting Month
|
Complaint Type
|
Investigation Findings
|
Follow-up Action / Mitigation Measure
|
|
Noise nuisance generated from the construction
activities at Portion T1 & V (6 September 2023)
|
The weekly noise
monitoring and additional noise assessments have verified that the noise
levels remain within the set limits. Moreover, the groundborne
noise measurements data suggests that the noise levels are well within the
criteria outlined in the TM.
According to the
investigation
result, the construction
activities of Trunk Road
T2
conducted inside the
tunnel
area and the construction
activities of TKO-LT
Tunnel
conducted inside the
tunnel
section at Kwun Tong Side
are
considered as one of the
potential noise source of
the
ground borne noise nuisance
|
ˇP
A valid CNP was hold and
construction activities being taken were complied with the relevant CNP
ˇP
The contractor has taken
steps to address noise concerns by implementing noise control measures such
as erecting noise barriers and using a hydraulic breaker equipped with a noise muffler.
ˇP
In addition, the
Contractor should still maintain good site practices, such as schedule noisy
work to the less sensitive hours and provide regularly maintenance for PMEs.
ˇP
Contractor is recommended
to continue to strictly follow the requirements in the relevant CNP and the
approved CNMP.
ˇP
According to the
condition 3.d point 5 of the CNP (GW-RE0973-23), the immediate remedial
action shall be implemented in case adverse ground-borne noise impact on any
noise sensitive receiver is received
|
Reporting Changes
23. No reporting change is recorded in the reporting months.
Future Key Issues
24. The key works or activities will be anticipated in the next
reporting period are as follows:
Table IV
Summary Table for Site Activities in the next Reporting Period
|
Site Activities (October 2023)
|
Key Environmental Issues
|
|
|
|
1.
East Bound ˇV RC Structure
Construction, Lining, Bulkhead Construction.
2. East Ventilation Building ˇV RC Structure.
3. West Bound ˇV RC Structure Construction, Pilot Tunnel Excavation,
Lining.
|
(A)
/ (B) / (C) / (D)
|
|
|
Note:
(A) Dust generation from haul road, stockpile
of dusty materials, exposed site area, excavation works and rock breaking
activities;
(B) Noisy construction activity such as
rock-breaking activities and piling works;
(C) Runoff from exposed slope or site area;
and
(D) Wastewater and runoff discharge from site.
|
|
1.
INTRODUCTION
Background
1.1
In 2009,
Civil Engineering and Development Department (CEDD) commissioned a Kai Tak Development (KTD) ˇV Trunk Road T2 and Infrastructure at
South Apron Investigation. The assignment covers the provision of the
Trunk Road T2 and its connections with the Central Kowloon Route (CKR) at the
north apron area and the Tseung Kwan O ˇV Lam Tin Tunnel (TKOLTT) to the south
in the Cha Kwo Ling area.
1.2
The Trunk Road T2 Project is one of the
designated Projects under Schedule 2 of the EIAO proposed
in the KTD. CEDD submitted the Project Profile (No. PP-379/2009) on 24 March
2009 for application for an EIA study brief for the Trunk Road T2 Project under
the EIAO. Accordingly, an EIA Study Brief (ESB-203/2009) for the Trunk Road T2
Project was issued on 30 April 2009. The
Environmental Impact Assessment (EIA) Report for the Trunk Road T2 Project was
approved under the Environmental Impact Assessment Ordinance (EIAO) on 19
September 2013. The corresponding Environmental Permit (EP) was issued on 19
September 2013 (EP no.: EP-451/2013).
1.3
The Contract No. ED/2018/04 is the main contract
of Trunk Road T2 (ˇ§T2 Main Worksˇ¨) which comprises mainly the design and
construction of a dual two-lane trunk road of approximately 3.0km long with
about 2.7km of the trunk road in form of tunnel; ventilation and administration
buildings, environmental protection and mitigation works and etc. The EM&A
programme under this Contract is governed by the two EPs (EP-451/2013 and
EP-458/2013/C) and two EM&A Manuals (AEIAR-174/2013 and AEIAR-173/2013).
The work areas of the T2 Main Works are shown in Figure 1 and the works to be executed under this Contract and
corresponding EPs are summarized as follows:
|
Environmental Permit
|
Works Description
|
|
EP-451/2013
ˇV Trunk Road T2
|
Trunk Road T2
ˇ´
Construction
of highway and sub-sea tunnel connecting between Central Kowloon Route and
Cha Kwo Ling Tunnel
ˇ´
Western
& Eastern Ventilation Buildings
|
|
EP-458/2013/C
ˇV Tseung Kwan O ˇV Lam Tin Tunnel (TKOLTT) and Associated Works
|
Cha Kwo Ling Tunnel
Construction
of Cha Kwo Ling Tunnel from the end of Trunk Road T2 to the TKOLTT at the
Eastern Ventilation Building
|
Monitoring Works in Lam Tin under
EP-458/2013/C
1.4
Under Agreement No. CE 59/2015
(EP) ˇV Tseung Kwan O ˇV Lam Tin Tunnel (TKOLLT) and Associated Works, the baseline
monitoring works in Lam Tin under the EM&A Manual (AEIAR-173/2013) were
conducted by the Environmental Team (ET) for the Agreement No. CE 59/2015 (EP)
at the approved monitoring locations, namely AM1, AM2, AM3, AM4, AM4 (A) CM1,
CM2, CM3, CM4 and CM5. Impact monitoring within the Lam Tin area shall be
conducted by the ET of Contract No. ED/2018/04 upon cessation of Agreement No.
CE 59/2015 (EP). The data obtained from the impact monitoring works completed
by the ET of Agreement No. CE 59/2015 (EP) will be adopted in this report.
1.5
Cinotech Consultants Ltd. was designated as the Environmental Team (ET) to
undertake the EM&A works for ˇ§Trunk Road T2 and Infrastructure Works for
Developments at the Former South Apronˇ¨ (hereinafter called the ˇ§Projectˇ¨).
Purpose of the Report
1.6
This is the 41st
Monthly EM&A Report which summarises the impact monitoring results and
audit findings for the EM&A programme during the reporting period in
September 2023.
Project Organizations
1.7
Different Parties with
different levels of involvement in the Project organization include:
•
Permit Holder ˇV Civil
Engineering and Development Department (CEDD)
•
Supervisor Representative ˇV
Hyder-Meinhardt Joint Venture (HMJV)
•
Environmental Team (ET) ˇV Cinotech Consultants Limited (Cinotech)
•
Independent Environmental
Checker (IEC) ˇV Ramboll Hong Kong Limited (Ramboll)
•
Contractor ˇV Bouygues Travaux
Publics (BTP)
1.8
The key contacts of the Project
are shown in Table 1.1.
Table 1.1 Key
Project Contacts
|
Party
|
Role
|
Contact Person
|
Phone No.
|
|
CEDD
|
Permit Holder
|
Mr. Wong Chi Wai, Tommy
|
3842 7111
|
|
HMJV
|
Supervisor Representative
|
Ms. Hazel Tang
|
2149 8524
|
|
Cinotech
|
Environmental Team
|
Mr. KS Lee (ETL)
|
2151 2091
|
|
Ms. Karina Chan
|
2157 3880
|
|
Ramboll
|
Independent Environmental Checker
|
Mr. YH Hui
|
3465 2850
|
|
BTP
|
Contractor
|
Mr. Roy Leung
|
6628 2685
|
|
|
1.9
The Organizational Structure
for Environmental Management is shown in Figure
1.2.
Construction Activities undertaken during the Reporting Month
1.10 The major site activities undertaken in the reporting month
included:
•
East Bound ˇV RC Structure
Construction, Lining
•
East Ventilation Building ˇV RC
Structure.
•
West Bound ˇVRC Structure
Construction, Pilot Tunnel Excavation, Lining
Summary of EM&A Requirements
1.11 The EM&A programme requires construction noise, air quality
monitoring and environmental site audit, etc. The EM&A requirements for
each parameter are described in the following sections, including:
•
All monitoring parameters;
•
Action and Limit levels for all
environmental parameters;
•
Event Action Plans;
•
Environmental mitigation
measures, as recommended in the Project EIA Report.
1.12
The advice on the
implementation status of environmental protection and pollution
control/mitigation measures is summarized in Section 12 of this report.
1.13 This report presents the monitoring results, observations,
locations, equipment, period, methodology and QA/QC procedures of the
monitoring parameters of the required environmental monitoring works and audit
works for the Project in September 2023.
Status of Environmental Licensing and Permitting
1.14 All permits/licenses obtained for the Project are summarized
in Table 1.2.
Table
1.2 Summary
of Environmental License and Permit
|
Permit / License No.
|
Valid Period
|
Status
|
|
From
|
To
|
|
Environmental
Permit (EP)
|
|
EP-451/2013
|
19 Sep 2013
|
N/A
|
Valid
|
|
EP-458/2013/C
|
20 Jan 2017
|
N/A
|
Valid
|
|
Notification pursuant to Air Pollution
(Construction Dust) Regulation
|
|
Ref. No.: 451120
|
20 Nov 2019
|
N/A
|
Valid
|
|
Billing Account for Construction Waste
Disposal
|
|
A/C No.: 7036016
|
09 Dec 2019
|
N/A
|
Valid
|
|
Construction Noise Permit
|
|
CNP No. (For Portion Q): GW-RE0282-23
|
22 Mar 2023
|
21 Sep 2023
|
Expired on 21 Sep 2023
|
|
CNP No. (For Portion U):
GW-RE1003-23
|
21 Aug 2023
|
20 Nov 2023
|
Valid
|
|
CNP No. (For Portion T1): GW-RE0973-23
|
1 Sep 2023
|
26 Sep 2023
|
Expired on 26 Sep 2023
|
|
CNP No. (For Portion Q):GW-RE1151-23
|
21 Sep 2023
|
20 Dec 2023
|
Valid
|
|
CNP No. (For Portion T1): GW-RE1182-23
|
27 Sep 2023
|
26 Dec 2023
|
Valid
|
|
Wastewater Discharge License
|
|
WT00036699-2020
|
14 Jan 2021
|
31 Jan 2026
|
Valid
|
|
Chemical Waste Producer License
|
|
WPN: 5213-286-B2557-03
|
09 Mar 2020
|
N/A
|
Valid
|
2.
NOISE
Monitoring Requirements
2.1
According to Section 3.2.1 of
the EM&A Manual (AEIAR-173/2013), construction noise monitoring was
conducted to monitor the construction noise arising from the construction
activities. The regular monitoring frequency for each monitoring station shall
be on a weekly basis and conduct one set of measurements between 0700 and 1900
hours on normal weekdays. Appendix A
shows the established Action and Limit Levels for the environmental monitoring
works.
Monitoring Locations
2.2
Noise monitoring was conducted
at five designated monitoring stations, namely CM1, CM2, CM3, CM4 and CM5 in
the reporting period. Table 3.1 and Figure 2 show the locations of these
stations.
Table
3.1 Noise Monitoring Stations
|
Monitoring Stations
|
Location
|
Location of Measurement
|
|
CM1
|
Nga Lai House,
Yau Lai Estate Phase 1, Yau Tong
|
Rooftop (41/F)
|
|
CM2
|
Bik Lai House,
Yau Lai Estate Phase 1, Yau Tong
|
Rooftop (41/F)
|
|
CM3
|
Block S, Yau Lai
Estate Phase 5, Yau Tong
|
Rooftop (40/F)
|
|
CM4
|
Tin Hau Temple,
Cha Kwo Ling
|
Ground Level
|
|
CM5
|
CCC Kei Faat
Primary School, Yau Tong
|
Rooftop (6/F)
|
Monitoring Parameters,
Frequency and Duration
2.3
Table 3.2 summarizes the monitoring
parameters, frequency and total duration of monitoring. The noise monitoring schedule is shown
in Appendix D.
Table
3.2
Frequency and Parameters of Noise Monitoring
|
Monitoring Stations
|
Time Period
|
Duration
|
Frequency
|
Parameter
|
Measurement
|
|
CM1
|
0700-1900 hrs on normal weekdays
|
30 minutes
|
Once per week
|
L10(30 min.) dB(A)
L90(30 min.) dB(A)
Leq(30 min.) dB(A)
|
Façade Measurement
|
|
CM2
|
Façade Measurement
|
|
CM3
|
Façade Measurement
|
|
CM4
|
Façade Measurement
|
|
CM5
|
Façade Measurement
|
Monitoring Equipment
2.4
Integrating Sound Level Meter
was used for impact noise monitoring. The meters were Type 1 sound level meter
capable of giving a continuous readout of the noise level readings including
equivalent continuous sound pressure level (Leq)
and percentile sound pressure level (Lx) that also complied with
International Electrotechnical Commission Publications 651:1979 (Type 1) and
804:1985 (Type 1) specifications. Table
3.3 summarizes the noise monitoring equipment being used by the ET for
Agreement No. CE 59/2015 (EP) within the reporting period. Copies of
calibration certificates are attached in Appendix
B.
Table
3.3
Noise Monitoring Equipment
|
Equipment
|
Model
|
Quantity
|
|
Integrating Sound Level Meter
|
BSWA 308 (Serial No.: 580287,
570187,580238)
SWAN 957 (Serial No.: 21455),
SWAN 979 (Serial No.: 27189)
|
5
|
|
Calibrator
|
ST-120 (Serial
No.: 181001637)
AWA6021A (Serial no. 1023253)
|
2
|
Monitoring
Methodology and QA/QC Procedure
2.5
The monitoring procedures are
as follows:
ˇ´
The monitoring station was
normally be at a point 1m from the exterior of the sensitive receivers building
façade and be at a position 1.2m above the ground.
ˇ´
For free field measurement, the
meter was positioned away from any nearby reflective surfaces. All records for
free field noise levels were adjusted with a correction of +3 dB(A).
ˇ´
The battery condition was
checked to ensure the correct functioning of the meter.
ˇ´
Parameters such as frequency weighting,
the time weighting and the measurement time were set as follows:
-
Frequency weighting: A
-
Time weighting: Fast
-
Time measurement: 30 minutes
ˇ´
Prior to and after each noise
measurement, the meter was calibrated using a Calibrator for 94.0 dB at 1000 Hz. If the difference in the calibration
level before and after measurement was more than 1.0 dB, the measurement would
be considered invalid and repeat of noise measurement would be required after
re-calibration or repair of the equipment.
ˇ´
The wind speed was frequently
checked with the portable wind meter.
ˇ´
At the end of the monitoring
period, the Leq, L90 and L10
were recorded. In addition, site
conditions and noise sources were recorded on a standard record sheet.
ˇ´
Noise monitoring would 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. Supplementary monitoring would be
provided to ensure sufficient data would be obtained.
Maintenance and Calibration
2.6
The microphone head of the sound
level meter and calibrator were cleaned with a soft cloth at quarterly
intervals.
2.7
The sound level meter and
calibrator were checked and calibrated at yearly intervals.
2.8
Immediately prior to and
following each noise measurement the accuracy of the sound level meter was
checked using an acoustic calibrator generating a known sound pressure level at
a known frequency. Measurements were accepted as valid only if the calibration
levels from before and after the noise measurement agree to within 1.0 dB.
Results
and Observations
2.9
The data obtained from the
impact monitoring works completed by the ET of Agreement No. CE 59/2015 (EP)
will be adopted in this report.
2.10 One (1) Action Level exceedance was recorded due to the documented
complaint in the reporting month.
2.11 No Limit Level exceedance was recorded for day-time construction
noise monitoring in the reporting month.
2.12 Noise monitoring results and graphical presentations are shown in
Appendix G.
2.13 According to field observations by ET for Agreement No. CE 59/2015
(EP) in the reporting period, the major noise sources identified at the noise
monitoring stations are shown in Table 3.4.
Table
3.4
Other Noise Source Identified during Noise Monitoring
|
Monitoring Stations
|
Major Noise Source
|
|
CM1
|
Road Traffic near Eastern Cross Harbour Tunnel Toll
Plaza, non-project related construction activities (i.e
road paving work in TKOLTT project)
|
|
CM2
|
Road Traffic near Eastern Cross Harbour Tunnel Toll
Plaza, non-project related construction activities (i.e road paving work in TKOLTT project)
|
|
CM3
|
Road Traffic near Eastern Cross Harbour Tunnel Toll
Plaza non-project related construction activities (i.e road paving work in TKOLTT project)
|
|
CM4
|
Road Traffic at
Cha Kwo Ling Road, non-project related construction activities (i.e underground utility work in TKOLTT project)
|
|
CM5
|
Road Traffic
near Eastern Cross Harbour Tunnel Toll Plaza,
Road Traffic at
Yau Tong Road
|
.
Table 3.5 Baseline Noise
Level and Noise Limit Level for Monitoring Stations
|
Monitoring Stations
|
Baseline Noise Level, dB (A)
(at 0700 ˇV 1900 hrs on normal weekdays)
|
Noise Limit Level, dB (A) (at 0700 ˇV 1900 hrs on normal weekdays)
|
|
CM1
|
65.5
|
75
|
|
CM2
|
63.6
|
|
CM3
|
65.6
|
|
CM4
|
62.0
|
|
CM5
|
68.2
|
70*
|
(*) Noise Limit Level is 65 dB(A) during
school examination periods.
Comparison of EM&A
Result with EIA Prediction
2.14 The noise monitoring data was compared with the predictions in Table
4.15 of EIA Report (AEIAR-173/2013) as summarised in Table 3.6.
Table 3.6 Maximum Predicted
Mitigated Construction Noise Levels in EIA Report
|
Monitoring Stations
|
NSR ID
|
Maximum Predicted Mitigated Construction Noise
Levels in EIA Report (AEIAR-173/2013), dB(A)
|
Maximum Construction Noise Levels in the Reporting
Month
(September 2023),
Leq (30min) dB(A)
|
|
CM1 ˇV Nga Lai House, Yau Lai Estate Phase
1, Yau Tong
|
N1102
|
73
|
68.0
|
|
CM2 ˇV Bik Lai House, Yau Lai Estate Phase
1, Yau Tong
|
N1204
|
75
|
72.0
|
|
CM3 ˇV Block S, Yau Lai Estate Phase 5, Yau Tong
|
N2105
|
75
|
66.0
|
|
CM4 ˇV Tin Hau Temple, Cha Kwo Ling
|
N3101a
|
73
|
62.0
|
|
CM5 ˇV CCC Kei Faat Primary School, Yau
Tong
|
N4101
|
71
|
68.0
|
2.15
The results at CM1, CM2, CM3,
CM4 and CM5 were lower than the maximum predicted mitigated construction noise
level in EIA Report, AEIAR-173/2013 (as approved in 2013). No Limit level
exceedance was recorded in the reporting period.
3.
WATER QUALITY
Monitoring
Requirement
Groundwater Quality
3.1
The existing groundwater
quality monitoring programme has been suspended as the monitoring results had
been deemed non-representative of the impact from the project justified by two
major factors: (1) influence on the monitoring results from non-project related
factors, such as anthropogenic activities and natural phenomenon; and (2) large
separation between the monitoring stations and works area. In addition, as no
alternative locations for the groundwater quality monitoring were available,
the groundwater quality monitoring has been suspended since October 2019 upon
the agreement by EPD.
Marine Water Quality
3.2
According to Section 4.4.3 of
EM&A Manual (AEIAR-173/2013), marine water quality impact monitoring
stations is carried out during marine construction for TKOLTT reclamation.
Since the construction of Cha Kwo Ling Tunnel from the end of Trunk Road T2 to
the TKOLTT at the Eastern Ventilation Building does not involve reclamation,
the marine water quality monitoring programme stated in Section 4.4 of the
EM&A Manual (AEIAR-173/2013) is therefore not applicable to Contract No.
ED/2018/04.
Groundwater Level Monitoring (Piezometer
Monitoring)
3.3
According to Section 4.1.2 of
EM&A Manual (AEIAR-173/2013), daily piezometer monitoring will be carried
out on a daily basis when any tunnel construction activities are carried out
within +/- 50m of the piezometer gate in plan. As the construction works of Cha
Kwo Ling Tunnel from the end of Trunk Road T2 to the TKOLTT at the Eastern
Ventilation Building is approximately 120m away from the piezometer gate in
plan, the piezometer monitoring programme stated in Section 4.2 of the EM&A
Manual (AEIAR-173/2013) is therefore not applicable to Contract No. ED/2018/04.
4.
WASTE MANGEMENT
4.1
According to Section 5.1.2 of
the EM&A Manual (AEIAR-173/2013), Waste materials generated during
construction activities, such as construction and demolition (C&D)
materials and general refuse, are recommended to be audited at regular
intervals (at least quarterly) to ensure that proper storage, transportation
and disposal practices are being implemented by the Contractor. To fulfil this
requirement, site audits are carried out on a weekly basis. The summaries of
site audits are attached in Appendix I.
4.2
With reference to relevant
handling records of this Project, the quantities of different types of waste
generated in the reporting month are summarised and presented in Appendix H.
5.
ECOLOGY
Post-Translocation Coral Monitoring
5.1
Post-translocation monitoring
survey is recommended in Section 6.2.5 of the EM&A Manual (AEIAR-173/2013),
to audit the success of coral translocation. Since the construction of Cha Kwo
Ling Tunnel from the end of Trunk Road T2 to the TKOLTT at the Eastern
Ventilation Building does not involve any marine works in the concerned area
mentioned in Section 6.1.2 of the EM&A Manual (AEIAR-173/2013), the
post-translocation monitoring survey stated in Section 6.2.5 of the EM&A
Manual (AEIAR-173/2013) is therefore not applicable to Contract No. ED/2018/04.
6.
FISHERIES
6.1
According to Section 7.1.3 of
EM&A Manual (AEIAR-173/2013), no specific fisheries monitoring programme is
required during the construction phase.
6.2
The implementation of the
mitigation measures stated in the Water Quality Impact Assessment (Refer to
Section 5 of EIA Report (AEIAR-173/2013)) will be audited as part of the
EM&A procedures during the construction period. The summaries of site
audits are attached in Appendix I.
7.
CULTURAL HERITAGE
7.1
According to Condition 3.7 of
EP-458/2013/C and Section 8.2.1 of the EM&A Manual (AEIAR-173/2013),
monitoring of vibration impacts was conducted when the construction works
are less than 100m from the Built Heritage in close proximity of the worksite,
namely the Cha Kwo Ling Tin Hau temple. Tilting and settlement monitoring
should be applied on the Cha Kwo Ling Tin Hau Temple.
7.2
As the construction works of
Cha Kwo Ling Tunnel from the end of Trunk Road T2 to the TKOLTT at the Eastern
Ventilation Building are located more than 100m away from the Cha Kwo Ling Tin
Hau temple, the vibration impact monitoring stated in Section 8.3.1 of the
EM&A Manual (AEIAR-173/2013) is not applicable to Contract No. ED/2018/04.
Mitigation Measures for Cultural Heritage
7.3
According to Condition 3.6 of
EP-458/2013/C, to prevent damage to Cha Kwo Ling Tin Hau Temple and its Fung
Shui rocks (Child-given rocks) during the construction phase, a temporarily
fenced-off buffer zone (Rocks buffer zone is 5 m from the edge of Rocks and 15m
from the edge of Rocks alter) with allowance for public access (minimum 1 m)
around the temple and the Fung Shui rocks shall be provided. The open yard in
front of the temple should be kept as usual for annual Tin Hau festival.
7.4
As there is a large buffer
distance from the current works to Cha Kwo Ling Tin Hau Temple and the Fung
Shui rocks (Child-given rocks), the temporarily fenced-off rocks buffer zone
and from the edge of Rocks alter is not required. The fenced-off rocks buffer
zone would be implemented when there is construction
activities in vicinity of the cultural heritage.
8.
LANDSCAOPE AND VISUAL
IMPACT
8.1
According to Section 9.3 of the
EM&A Manual (AEIAR-173/2013), landscape and visual mitigation measures
during the construction phase shall be checked to ensure that they are fully
realized and implemented on site.
8.2
Site audits were carried out on
a weekly basis to monitor and audit the timely implementation of landscape and
visual mitigation measures listed in ˇ§Environmental Mitigation Implementation
Schedule (EMIS)ˇ¨ (shown in Appendix J).
8.3
The implementation of landscape
and visual mitigation measures was checked by a registered landscape architect.
No non-compliance of the landscape and visual impact was recorded in the
reporting month. Details of the audit findings and implementation status are
presented in Appendix I.
9.
LANDFILL GAS MONITORING
Monitoring Requirement
9.1
In accordance with Section
10.1.1 of the EM&A Manual (AEIAR-173/2013), monitoring of landfill gas is
required for construction works within the Sai Tso Wan Landfill Consultation
Zone during the construction phase. Since no excavation activity for this
Project was carried out within the Sai Tso Wan Landfill Consultation Zone in
the reporting month, no landfill gas monitoring is required.
10.
HAZARD TO LIFE
10.1 According to Section 11.1.1 of EM&A Manual (AEIAR-173/2013), as
no overnight storage of explosive on site is required for the construction of
the Project, the hazard assessment is deemed not necessary. Thus, environmental
monitoring and audit is not required.
11.
ENVIRONEMNTAL AUDIT
Site Audits
11.1 Site audits were carried out on a weekly basis to monitor the timely
implementation of proper environmental management practices and mitigation
measures in the Project site. The
summaries of site audits are attached in Appendix I.
11.2 Site audits were conducted on 07, 14, 21 & 28 September 2023 in
the reporting month. Site inspection of the IEC was conducted on 28 September 2023.
No non-compliance was observed during the site audit.
Implementation Status of Environmental Mitigation Measures
11.3 According to Environmental Permits, the approved EIA Reports
(Register No.: AEIAR-174/2013 and AEIAR-173/2013), and the EM&A Manuals of
the Project (AEIAR-174/2013 and AEIAR-173/2013), the mitigation measures
detailed in the documents are recommended to be implemented during the
construction phase. An
Environmental Mitigation Implementation Schedule (EMIS) is provided in Appendix
J.
11.4 The ET weekly site inspections were carried out during the reporting
month and the observations and recommendations are summarized in Table 12.1.
Refer to Appendix I for the site inspection summary reports in the reporting
month.
Table 12.1
Observations and Recommendations of Site Audit
|
Parameters
|
Date
|
Observations and Recommendations
|
Follow-up
|
|
Air Quality
|
31 August 2023
|
Water spraying should be provided to the haul road
to avoid dust generation.
|
The contractor had sprayed the water along the haul road to avoid
dust generation.
|
|
7 September 2023
|
Water spraying should be applied when conducting
dust-generating activities.
|
The water
sprinkler installed near the unloading area of the PTBM.
|
|
28 September
2023
|
Water spraying should be applied along the haul road
near the site entrance (Westbound tunnel).
|
To be reported
in the next reporting month.
|
|
Noise
|
N/A
|
There was no observation in the reporting period.
|
N/A
|
|
Water Quality
|
N/A
|
There was no observation in the reporting period.
|
N/A
|
|
Ecology
|
N/A
|
There was no
observation in the reporting period.
|
N/A
|
|
Landscape and Visual
|
N/A
|
There was no observation in the reporting period.
|
N/A
|
|
Waste/ Chemical Management
|
21 September 2023
|
Drip tray should
be provided for chemical containers to prevent chemical leakage.
|
Contractor had removed the chemical containers.
|
|
Permits /Licences
|
N/A
|
There was
no observation in the reporting period.
|
N/A
|
Implementation
Status of Event and Action Plans
11.5 The Event and Action Plans for air quality and construction noise
monitoring, and the Limit Levels and Action Plan for landfill gas monitoring
are presented in Appendix L.
Air Quality Monitoring
ˇ´
No Action/Limit Level
exceedance for 1-hour TSP monitoring was recorded in the reporting month.
ˇ´
No Action Level exceedance for
24-hour TSP monitoring was recorded in the reporting month and no Limit Level
exceedance for 24-hour TSP monitoring was recorded in the reporting month.
Construction Noise Monitoring
ˇ´
One (1) Action Level exceedance
was recorded due to the documented complaint in the reporting month.
ˇ´
No Limit Level exceedance for
construction noise monitoring was recorded in the reporting month.
12.
ENVIRONMENTAL
NON-COMFORMANCE
Summary of Complaint, Warning, Notification of any Summons and
Successful Prosecution
12.1 The summaries of environmental complaint, warning, summon and
notification of successful prosecution for the Project is presented in Appendix M.
Summary of Exceedance
12.2 The summary of exceedance record in the reporting month is shown in Appendix N.
13.
FUTURE KEY ISSUES
13.1 Tentative construction programmes for the next three months are
provided in Appendix O.
13.2 Major site activities undertaken for the coming months are
summarized as follows:
•
East Bound ˇV RC Structure
Construction, Lining, Bulkhead Construction
•
East Ventilation Building ˇVRC
Structure.
•
West Bound ˇVRC Structure
Construction, Pilot Tunnel Excavation, Lining.
13.3 Key environmental issues in the coming months include:
•
Make sure noise mitigation
measures are implemented accordingly;
•
Make sure drainage system is
adequately designed to prevent flooding during periods of heavy rain; and,
•
Make sure mitigation measure
for dust suppression are implemented on site
Monitoring Schedule
13.4 The tentative environmental monitoring schedule for the next month
is shown in Appendix D.
14.
CONCLUSION AND
RECOMMENDATION
Conclusions
14.1 This is the 41st Monthly EM&A Report which presents
the EM&A works undertaken during the reporting month in accordance with the
EM&A Manual (AEIAR-173/2013) and the requirement under EP.
Air Quality Monitoring
14.2 No Action/Limit Level exceedance was recorded for 1-hour TSP
monitoring in the reporting month.
14.3 No Action Level exceedance for 24-hour TSP monitoring was recorded
in the reporting month and no Limit Level exceedance for 24-hour TSP monitoring
was recorded in the reporting month.
Construction Noise Monitoring
14.4 One (1) Action Level exceedance was recorded due to documented
complaint in the reporting month.
14.5 No Limit Level exceedance for construction noise monitoring was
recorded in the reporting month.
Site Audit
14.6 4 ET joint weekly
environmental site inspections were conducted in the reporting month.
Complaint, Notification of Summons and Successful Prosecution
14.7 One (1) environmental complaint was received in the reporting
period. No notifications of summons and successful prosecutions were received
in the reporting month.
Recommendations
14.8
According to the environmental
audit performed in the reporting month, the following recommendations were
made:
Air quality:.
ˇ´
Water spraying should be applied when conducting dust-generating
activities.
Waste/
Chemical Management.
ˇ´ The drip tray should be provided for the chemical
container to avoid the chemical leakage.
