1.
EXECUTIVE SUMMARY
Introduction
1.
This is the
39th Environmental Monitoring and Audit (EM&A) Report prepared
by the Environmental Team (ET), Cinotech Consultants
Ltd., for Contract No. ED/2018/04 “Trunk Road T2 and Infrastructure Works for
Developments at the Former South Apron”. 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 July 2023.
Summary of Main Works
Undertaken and Key Measures Implemented
2.
The main
works undertaken during the reporting period are as follows:
•
East Bound
– RC Structure Construction, Pilot Tunnel Excavation.
•
East
Ventilation Building – WB Blinding & Waterproofing, RC Structure.
•
West Bound
–RC Structure Construction.
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
|
0
|
0
|
0
|
0
|
N/A
|
|
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.
No 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
|
0
|
--
|
N/A
|
N/A
|
|
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
|
|
-
|
-
|
-
|
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 (August 2023)
|
Key Environmental Issues
|
|
|
|
1.
East
Bound – RC Structure Construction.
2.
East
Ventilation Building – WB Blinding & Waterproofing, RC Structure.
3.
West
Bound – RC Structure Construction.
|
(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.
|
|
Background
1.1
In 2009, Civil Engineering and Development
Department (CEDD) commissioned a Kai
Tak Development (KTD) – 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 – 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 (“T2 Main Works”) 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
– Trunk Road T2
|
Trunk Road T2
●
Construction
of highway and sub-sea tunnel connecting between Central Kowloon Route and
Cha Kwo Ling Tunnel
●
Western
& Eastern Ventilation Buildings
|
|
EP-458/2013/C
– Tseung Kwan O – 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) – Tseung Kwan O – 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 “Trunk Road T2 and Infrastructure Works for Developments at
the Former South Apron” (hereinafter called the “Project”).
Purpose of the Report
1.6
This is the
39th Monthly EM&A Report which summarises the impact monitoring
results and audit findings for the EM&A programme during the reporting
period in July 2023.
Project Organizations
1.7
Different
Parties with different levels of involvement in the Project organization
include:
•
Permit
Holder – Civil Engineering and Development Department (CEDD)
•
Supervisor Representative –
Hyder-Meinhardt Joint Venture (HMJV)
•
Environmental
Team (ET) – Cinotech Consultants Limited (Cinotech)
•
Independent
Environmental Checker (IEC) – Ramboll Hong Kong Limited (Ramboll)
•
Contractor
– 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
– RC Structure Construction, Pilot Tunnel Excavation.
•
East
Ventilation Building – WB Blinding & Waterproofing, RC Structure.
•
West Bound
–RC Structure Construction.
•
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 July 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
|
Valid
|
|
CNP No. (For Portion T1): GW-RE0603-23
|
1 Jun 2023
|
31 Aug 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
|
Monitoring Requirement
2.1
According
to Section 2.2.4 of the EM&A Manual (AEIAR-173/2013), 1-hour and 24-hour
Total Suspended Particulates (TSP) monitoring was conducted to monitor the air
quality for this Project. For regular impact monitoring, a sampling frequency
of at least once in every six days at all of the monitoring stations for 1-hour
and 24-hour TSP monitoring. Appendix
A shows the established Action/Limit
Levels for the environmental monitoring works.
Monitoring Locations
2.2
Five
designated monitoring stations were selected for air quality monitoring
programme. Table 2.1 describes the
air quality monitoring locations, which are also depicted in Figure 2.
Table 2.1 Air Quality Monitoring Locations
|
Monitoring Stations
|
Location
|
Location of Measurement
|
|
AM1
|
Tin Hau Temple
|
Ground Level
|
|
AM2
|
Sai Tso Wan Recreation Ground
|
Ground Level
|
|
AM3
|
Yau Lai Estate Bik Lai House
|
Rooftop (41/F)
|
|
AM4(1)
|
Sitting-out Area at Cha Kwo Ling Village
|
Ground Level
|
|
AM4(B)(2) (*)(**)
|
Flat 103 Cha Kwo Ling Village
|
Ground Level
|
Remarks:
(1) For 1-hour TSP
monitoring;
(2) For 24-hour TSP
monitoring
(*)
Air quality monitoring at designated station AM4 (24-hr TSP) was rejected by
the premise owners.
Therefore, baseline and impact air quality
monitoring works were carried out at alternative air quality monitoring
stations AM4 (A) (24-hr TSP only)
(**)
AM4(A) is not available for conducing monitoring due to the demolition of
administrative office.
Monitoring Parameters and Frequency
2.3
Table 2.2 summarizes the monitoring parameters, monitoring period
and frequencies of impact air quality monitoring. The monitoring schedule is
shown in Appendix D.
Table 2.2 Frequency and Parameters of
Air Quality Monitoring
|
Monitoring Stations
|
Parameter
|
Period
|
Frequency
|
|
AM1, AM2, AM3, AM4
|
1-hour TSP
|
0700 – 1900
|
3 times per 6 days
|
|
AM1, AM2, AM3, AM4(B)
|
24-hour TSP
|
24 hours
|
Once every 6 days
|
|
|
2.4
High Volume
Samplers (HVS) in compliance with the specification stipulated in the EM&A
Manual (AEIAR-173/2013), Section 2.3.1, were used to carry out 24-hour TSP
monitoring. Direct reading dust meter were also used to measure 1-hour average
TSP levels. The 1-hour sampling was determined by HVS to check the validity and
accuracy of the results measured by direct reading method.
2.5
Wind data
monitoring equipment was set at rooftop (about 41/F) of Yau Lai Estate Bik Lai
House for logging wind speed and wind direction such that the wind sensors are
clear of obstructions or turbulence caused by building. The wind data
monitoring equipment is re-calibrated at least once every six months and the
wind directions are divided into 16 sectors of 22.5 degrees each. The location
is shown in Figure 2. This weather
information for the reporting month is summarized in Appendix C.
2.6
Table 2.3 summarizes the equipment used for air quality monitoring
by the ET for Contract No. CE 59/2015 (EP). Copies of calibration certificates
are attached in Appendix B.
Table
2.3 Air Quality Monitoring
Equipment
|
Equipment
|
Model
|
Quantity
|
|
1-hour TSP Dust Meter
|
Sibata Model No. LD-5R
(Serial No.: 972781, 972777, 972778,
972779, 972780, 8Y2373, 8Y2374)
Sibata Model No. LD-3B
(Serial No.2Y6194)
|
8
|
|
HVS Sampler
|
GMW model: GS2310
(Serial No.: 1287, 10379, 10599)
|
3
|
|
TE 5170 (Serial No.: 1956)
|
1
|
|
Calibrator
|
TISCH Model: TE-5025A
(Serial No.: 3864)
|
1
|
|
Wind Anemometer
|
Davis Weather Monitor II, Model no. 7440
(Serial No.: MC01010A44)
|
1
|
Monitoring Methodology
1-hour TSP Monitoring
Measuring Procedures
2.7
The measuring
procedures of the 1-hour dust meter are in accordance with the Manufacturer’s
Instruction Manual as follows:
(Sibata Model No.: LD-5R)
●
The 1-hour dust meter is placed
at least 1.3 meters above ground.
●
Set POWER to “ON” and make sure
that the battery level was not flash or in low level.
●
Allow the instrument to stand
for about 3 minutes and then the cap of the air sampling inlet has been
released.
●
Push the knob at MEASURE
position.
●
Set time/mode setting to [BG]
by pushing the time setting switch.
Then, start the background measurement by pushing the start/stop switch
once. It will take 6 sec. to complete
the background measurement.
●
Push the time setting switch to
change the time setting display to [MANUAL] at the bottom left of the liquid
crystal display. Finally, push the start/stop switch to stop the measuring
after 1 hour sampling.
●
Information such as sampling
date, time, count value and site condition were recorded during the monitoring
period.
Maintenance/Calibration
2.8
The
following maintenance/calibration is required for the 1-hour dust meter:
●
Check and calibrate the meter
by HVS to check the validity and accuracy of the results measured by direct
reading method at 2-month intervals throughout all stages of the air quality
monitoring.
24-hour TSP Monitoring
Instrumentation
2.9
High volume
samplers (HVS) (TISCH Model: TE-5170 and GMW Model: GS2310) completed with
appropriate sampling inlets were employed for 24-hour TSP monitoring. The sampler was composed of a motor, a filter
holder, a flow controller and a sampling inlet and its performance
specification complied with that required by USEPA Standard Title 40, Code of
Federation Regulations Chapter 1 (Part 50).
2.10 The positioning of the HVS samplers are as
follows:
●
A horizontal platform with
appropriate support to secure the samplers against gusty wind shall be
provided;
●
No two samplers shall be placed
less than 2 meter apart;
●
The distance between the
sampler and an obstacle, such as buildings, must be at least twice the height
that the obstacle protrudes above the sampler;
●
A minimum of 2 metres of
separation from walls, parapets and penthouses is required for rooftop
samplers;
●
A minimum of 2 metres of
separation from any supporting structure, measured horizontally is required;
●
No furnace or incinerator flue
is nearby;
●
Airflow around the sampler is
unrestricted;
●
The sampler is more than 20
metres from the dripline;
●
Any wire fence and gate, to
protect the sampler, shall not cause any obstruction during monitoring;
●
Permission must be obtained to
set up the samplers and to obtain access to the monitoring stations; and
●
A secured supply of electricity
is needed to operate the samplers.
Operating/analytical procedures for the
operation of HVS
2.11 Operating/analytical procedures for the air
quality monitoring are highlighted as follows:
●
Prior to the commencement of
the dust sampling, the flow rate of the high volume
sampler was properly set (between 0.6 m3/min. and 1.7 m3/min.)
in accordance with the EM&A manual (AEIAR-173/2013). The flow rate shall be
indicated on the flow rate chart.
●
For TSP sampling, fiberglass
filters with a collection efficiency of > 99% for particles of 0.3μm
diameter were used.
●
The power supply was checked to
ensure the sampler worked properly. On
sampling, the sampler was operated for 5 minutes to establish thermal
equilibrium before placing any filter media at the designated air monitoring
station.
●
The filter holding frame was
then removed by loosening the four nuts and a weighted and conditioned filter
was carefully centered with the stamped number upwards,
on a supporting screen.
●
The filter was aligned on the
screen so that the gasket formed an airtight seal on the outer edges of the
filter. Then the filter holding frame
was tightened to the filter holder with swing bolts. The applied pressure
should be sufficient to avoid air leakage at the edges.
●
The shelter lid was closed and
secured with the aluminum strip.
●
The timer was then
programmed. Information was recorded on
the record sheet, which included the starting time, the weather condition and
the filter number (the initial weight of the filter paper can be found out by
using the filter number).
●
After sampling, the filter was
removed and sent to the HOKLAS laboratory (ALS Technichem
(HK) Pty Ltd.) for weighing. The elapsed
time was also recorded.
●
Before weighing, all filters
were equilibrated in a conditioning environment for 24 hours. The conditioning
environment temperature should be between 25°C and 30°C and not vary by more
than ±3°C; the relative humidity (RH) should be < 50% and not vary by more than
±5%. A convenient working RH is 40%.
Maintenance/Calibration
2.12 The following maintenance/calibration is
required for the HVS:
●
The high
volume motors and their accessories were properly maintained.
Appropriate maintenance such as routine motor brushes replacement and
electrical wiring checking were made to ensure that the equipment and necessary
power supply are in good working condition.
High volume samplers were calibrated at bi-monthly intervals using
TE-5025A Calibration Kit throughout all stages of the air quality monitoring.
Results and Observations
2.13 The impact monitoring works for air quality
monitoring locations AM1, AM2, AM3 and AM4 are completed by the ET of Agreement
No. CE 59/2015 (EP), and the data will be adopted in this report. As the
proposal for relocation approved, the monitoring at AM4(A) will conducted at AM4(B). For the time being, as the station CKL2
for the 24 hr TSP monitoring, carried out under EM&A works for Trunk Road
T2 Project (EP- 451/2013), is located in close proximity to AM4(B); the results
from CKL2 are adopted as reference for the 24 TSP monitoring at AM4(B), which
has similar environment when compared with that for CKL2. The location of
monitoring station CKL2 is shown in Figure
2.
2.14 The impact air quality monitoring was conducted
at all five monitoring stations as scheduled. The monitoring schedule is shown
in Appendix D.
2.15 No Action Level exceedance was recorded for
24-hour TSP monitoring in the reporting month and No Limit Level exceedance was
recorded for 24-hour TSP monitoring in the reporting month.
2.16 No Action/ Limit Level exceedance was recorded
for 1-hour TSP monitoring in the reporting month.
2.17 The monitoring data and graphical presentations
of 1-hour and 24-hour TSP monitoring results are shown in Appendix E and Appendix F respectively.
2.18 According to field observations by ET for
Agreement No. CE 59/2015 (EP) in the reporting period, the major dust source
identified at the designated air quality monitoring stations are as follows:
Table 2.4
Major Dust Source during Air Quality Monitoring
|
Monitoring Stations
|
Major Dust Source
|
|
AM1 – Tin Hau Temple
|
Road Traffic at
Cha Kwo Ling Road, non-project related influence and the construction
activity from other construction site (i.e
underground utility work in TKOLTT project)
|
|
AM2 – Sai Tso Wan Recreation
Ground
|
Road Traffic
along Sin Fat Road
|
|
AM3 – Yau Lai Estate Bik Lai
House
|
Road Traffic near
Eastern Cross Harbour Tunnel Toll Plaza, non-project related influence and
the construction activity from other construction site (i.e
road paving work in TKOLTT project)
|
|
AM4 - Sitting-out Area at Cha
Kwo Ling Village
|
Road Traffic at
Cha Kwo Ling Road
|
|
AM4(B) (**) - Flat
103 Cha Kwo Ling Village
|
Road Traffic at
Cha Kwo Ling Road(*)
|
|
(*):
Field observation observed at CKL2 during monitoring is presented. Detail refer to S2.13.
(**) AM4(A) is not
available for conducing monitoring due to the demolition of administrative
office.
|
Comparison
of EM&A Result with EIA Prediction
2.19 The air monitoring data was compared with the
predictions (with the assessment height of 1.5 mAG)
in Table 3.17 of EIA Report, AEIAR-173/2013 (as approved in 2013) as summarised
in Table 2.5 and Table 2.6.
Table 2.5
Comparison of 1-hr TSP Monitoring Data with Predictions in EIA Report
|
Monitoring Stations
|
ASR ID
|
Predicted Maximum 1-hr TSP Concentration in EIA Report
(AEIAR-173/2013), μg/m3
|
Maximum 1-hr TSP Concentration in the
Reporting Month
(July 2023),
μg/m3
|
|
AM1 – Tin Hau Temple
|
CL1
|
707
|
119.7
|
|
AM2 – Sai Tso Wan Recreation Ground
|
CL6
|
266
|
120.0
|
|
AM3 – Yau Lai Estate Bik Lai House
|
CL9
|
507
|
123.5
|
|
AM4 - Sitting-out Area at Cha Kwo
Ling Village
|
CL16
|
430
|
174.8
|
Table 2.6
Comparison of 24-hr TSP Monitoring Data with Predictions in EIA Report
|
Monitoring Stations
|
ASR ID
|
Predicted Maximum 24-hr TSP Concentration in EIA Report
(AEIAR-173/2013), μg/m3
|
Maximum 24-hr TSP Concentration in the
Reporting Month
(July 2023),
μg/m3
|
|
AM1 – Tin Hau Temple
|
CL1
|
199
|
66.2
|
|
AM2 – Sai Tso Wan Recreation Ground
|
CL6
|
109
|
38.7
|
|
AM3 – Yau Lai Estate Bik Lai House
|
CL9
|
123
|
21.4
|
|
AM4(B) – Flat 103 Cha Kwo Ling
Village (*)
|
N/A(1)
|
N/A(1)
|
86.8(**)
|
Remarks:
(1)
No 24-hr TSP concentration was predicted in EIA Report
(AEIAR-173/2013)
(*) Air quality
monitoring at designated station AM4 (24-hr TSP) was rejected by the premise
owners. Therefore, baseline and impact air quality monitoring works were
carried out at alternative air quality monitoring stations AM4 (B) (24-hr TSP
only)
(**): Monitoring
results at CKL2 is presented. Detail refer to S2.13
2.20 In the reporting month, the 1-hour TSP
concentrations at AM1, AM2, AM3 and AM4 were lower than the prediction in the
EIA Report, AEIAR-173/2013 (as approved in 2013). No Action/Limit level
exceedance was recorded in the reporting period.
2.21
In the
reporting month, the 24-hour TSP concentrations at AM1, AM2 and AM3 were lower
than the prediction in the EIA Report, AEIAR-173/2013 (as approved in 2013). No
Action Level exceedance was recorded for 24-hour TSP monitoring in the
reporting month and no Limit Level exceedance was recorded for 24-hour TSP
monitoring in the reporting month.
Monitoring
Requirements
3.1
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
3.2
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
3.3
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
3.4
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
3.5
The
monitoring procedures are as follows:
●
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.
●
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).
●
The battery condition was
checked to ensure the correct functioning of the meter.
●
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
●
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.
●
The wind speed was frequently
checked with the portable wind meter.
●
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.
●
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
3.6
The
microphone head of the sound level meter and calibrator were cleaned with a
soft cloth at quarterly intervals.
3.7
The sound
level meter and calibrator were checked and calibrated at yearly intervals.
3.8
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
3.9
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.
3.10
No Action
Level exceedance was recorded due to the documented complaint in the reporting
month.
3.11
No Limit
Level exceedance was recorded for day-time construction noise monitoring in the
reporting month.
3.12
Noise
monitoring results and graphical presentations are shown in Appendix G.
3.13
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 – 1900 hrs on normal weekdays)
|
Noise Limit Level, dB (A) (at 0700 – 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
3.14
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
(July 2023),
Leq (30min) dB(A)
|
|
CM1 – Nga Lai House, Yau Lai Estate Phase
1, Yau Tong
|
N1102
|
73
|
69.1
|
|
CM2 – Bik Lai House, Yau Lai Estate Phase
1, Yau Tong
|
N1204
|
75
|
68.5
|
|
CM3 – Block S, Yau Lai Estate Phase 5, Yau Tong
|
N2105
|
75
|
68.3
|
|
CM4 – Tin Hau Temple, Cha Kwo Ling
|
N3101a
|
73
|
58.5
|
|
CM5 – CCC Kei Faat Primary School, Yau
Tong
|
N4101
|
71
|
68.3
|
3.15
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.
4.
WATER QUALITY
Monitoring Requirement
Groundwater
Quality
4.1
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
4.2
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)
4.3
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.
5.
WASTE MANGEMENT
5.1
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.
5.2
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.
6.
ECOLOGY
Post-Translocation Coral Monitoring
6.1
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.
7.
FISHERIES
7.1
According
to Section 7.1.3 of EM&A Manual (AEIAR-173/2013), no specific fisheries
monitoring programme is required during the construction phase.
7.2
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.
8.
CULTURAL HERITAGE
8.1
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.
8.2
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
8.3
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.
8.4
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.
9.
LANDSCAOPE AND VISUAL
IMPACT
9.1
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.
9.2
Site audits
were carried out on a weekly basis to monitor and audit the timely
implementation of landscape and visual mitigation measures listed in
“Environmental Mitigation Implementation Schedule (EMIS)” (shown in Appendix
J).
9.3
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.
10.
LANDFILL GAS MONITORING
Monitoring Requirement
10.1 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.
11.
HAZARD TO LIFE
11.1
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.
12.
ENVIRONEMNTAL AUDIT
Site
Audits
12.1
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.
12.2
Site audits
were conducted on 06, 13, 20 & 27 July 2023 in the reporting month. Site
inspection of the IEC was conducted on 20 July 2023. No non-compliance was
observed during the site audit.
Implementation
Status of Environmental Mitigation Measures
12.3
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.
12.4
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
|
N/A
|
There was no observation in the reporting period.
|
N/A
|
|
Noise
|
N/A
|
There was no observation in the reporting period.
|
N/A
|
|
Water Quality
|
13 July 2023
|
Stagnant water was observed in the tray
at the site entrance.
|
The stagnant water in the tray had been
removed.
|
|
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
|
29 June
2023
|
Drip tray should
be provided for chemical containers to prevent chemical leakage.
|
The contractor has removed the chemical containers.
|
|
20 July 2023
|
Chemical label
on the chemical container was damaged and should put on the drip tray to
prevent chemical leakage.
|
The contractor has removed the chemical
containers.
|
|
Permits
/Licences
|
N/A
|
There
was no observation in the reporting period.
|
N/A
|
12.5
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
●
No
Action/Limit Level exceedance for 1-hour TSP monitoring was recorded in the
reporting month.
●
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
●
No Action
Level exceedance was recorded due to the documented complaint in the reporting
month.
●
No Limit
Level exceedance for construction noise monitoring was recorded in the reporting
month.
13.
ENVIRONMENTAL
NON-COMFORMANCE
Summary of Complaint,
Warning, Notification of any Summons and Successful Prosecution
13.1
The
summaries of environmental complaint, warning, summon and notification of
successful prosecution for the Project is presented in Appendix M.
Summary of Exceedance
13.2
The summary
of exceedance record in the reporting month is shown in Appendix N.
14.
FUTURE KEY ISSUES
14.1
Tentative
construction programmes for the next three months are provided in Appendix O.
14.2
Major site
activities undertaken for the coming months are summarized as follows:
•
East Bound
– RC Structure Construction.
•
East
Ventilation Building – WB Blinding & Waterproofing, RC Structure.
•
West Bound
–RC Structure Construction.
14.3
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
14.4
The
tentative environmental monitoring schedule for the next month is shown in Appendix D.
Conclusions
15.1
This is the
39th 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
15.2
No
Action/Limit Level exceedance was recorded for 1-hour TSP monitoring in the
reporting month.
15.3
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
15.4
No Action
Level exceedance was recorded due to documented complaint in the reporting
month.
15.5
No Limit
Level exceedance for construction noise monitoring was recorded in the
reporting month.
Site Audit
15.6
4 ET joint weekly environmental site
inspections were conducted in the reporting month.
Complaint, Notification of Summons and
Successful Prosecution
15.7
No environmental
complaint was received in the reporting period. No notifications of summons and
successful prosecutions were received in the reporting month.
Recommendations
15.8
According
to the environmental audit performed in the reporting month, the following
recommendations were made:
Water Quality
●
The
stagnant water in the tray should be removed regularly, make sure the drainage
system should be well maintenance and avoid water ponding.
Waste /
Chemical Management:
● Drip tray should be provided for the chemical
containers to avoid chemical leakage.
● Make sure the chemical label on the chemical containers is valid, it should be
replaced when it is damaged.
