EXECUTIVE SUMMARY
Introduction
1.
This is the 66th 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”, Contract No. ED/2020/03 “Trunk Road T2 - Traffic Control And
Surveillance System (TCSS) and Associated Works” and Contract No. NE/2015/01
“Tseung Kwan O – Lam Tin Tunnel–Main Tunnel and Associated Works”. 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 October
2025.
Summary of Main Works Undertaken and Key Measures Implemented
2.
The main works undertaken during the reporting period are
as follows:
Table
I
Summary of Key Construction Work in the Reporting Month
|
Contract No.
|
Contract Title
|
Site Activities
|
|
ED/2018/04
|
Trunk
Road T2 and Infrastructure Works for Developments at South Apron
|
·
Tunnel Internal Structure
·
EVB – ABWF
·
EVB – E&M works
|
|
ED/2020/03
|
Trunk
Road T2 - Traffic Control And Surveillance System
(TCSS) and Associated Works
|
·
Installation of TCSS equipment at T2 Branch Tunnel,
TKO-LTI, EVB
|
|
NE/2015/01
|
Tseung Kwan O – Lam Tin Tunnel–Main Tunnel and
Associated Works
|
·
Soft Landscape
·
Stage 1 Commissioning
Outstanding Works
|
3.
Implementation of the key mitigation measures during the
reporting period are as follows:
Table II
Summary of Key Mitigation Measures Implemented in the Reporting Month
|
Contract No. and Project
Title
|
Key Mitigation Measures Implemented
|
|
ED/2018/04 - Trunk Road
T2 and Infrastructure Works for Developments at South Apron
|
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.
Waste Management
·
Avoid accumulation of
construction waste and general refuse.
|
|
ED/2020/03 - Trunk Road
T2 - Traffic Control And Surveillance System (TCSS)
and Associated Works
|
Waste Management
·
Avoid accumulation of construction waste and general
refuse.
|
|
NE/2015/01 -
Tseung Kwan O–Lam Tin Tunnel–Main Tunnel and Associated Works
|
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.
Waste Management
·
Avoid accumulation of construction waste and general
refuse.
|
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 III.
Table III 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 IV.
9.
No Limit Level exceedance for day time construction noise
monitoring was 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 are 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 IV 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 V.
Table
V 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 VI Summary Table for Site Activities in
the next Reporting Period
|
Contract No. and Project Title
|
Site Activities (November 2025)
|
Key Environmental Issues
|
|
ED/2018/04 - Trunk Road T2 and Infrastructure Works for Developments
at South Apron
|
·
Tunnel Internal Structure
·
EVB – ABWF
·
EVB –
E&M works
|
(A) /
(B) / (C) / (D) / (E)
|
|
ED/2020/03 - Trunk Road T2 - Traffic Control And
Surveillance System (TCSS) and Associated Works
|
·
Installation of TCSS equipment at T2 Branch Tunnel,
TKO-LTI, EVB
|
(E)
|
|
NE/2015/01 - Tseung Kwan O–Lam Tin Tunnel–Main Tunnel
and Associated Works
|
·
Soft Landscape
·
Stage 1 Commissioning
Outstanding Works
|
(A) /
(C) / (E)
|
|
Notes:
(A)
Dust
generation from haul road, stockpile of dusty materials,
exposed site area, excavation works;
(B)
Noisy construction activity such as
breaking and drilling activities;
(C)
Runoff from exposed slope or site area;
(D)
Wastewater and runoff discharge from site; and
(E)
Accumulation of construction waste or
general refuse.
|
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. Moreover, the Contract No. ED/2020/03 is the other contract under Truck
Road T2 Project which comprises mainly design and construction of the TCSS for
this Project. The EM&A programme under the Contract ED/2018/04 and
ED/2020/03 are 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 these Contracts and corresponding EPs are
summarized as follows:
|
Environmental
Permit
|
Works
Description
|
|
EP-451/2013 – Trunk Road T2
|
ED/2018/04
● Construction
of highway and sub-sea tunnel connecting between Central Kowloon Route and
Cha Kwo Ling Tunnel
● Western
& Eastern Ventilation Buildings
ED/2020/03
Design and
construction of TCSS for Trunk Road T2
|
|
EP-458/2013/C – Tseung Kwan O – Lam Tin
Tunnel (TKOLTT) and Associated Works
|
ED/2018/04
● Construction
of Cha Kwo Ling Tunnel from the end of Trunk Road T2 to the TKOLTT at the
Eastern Ventilation Building
ED/2020/03
● Design
and construction of TCSS for Trunk Road T2
|
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”).
1.6
For the project “Tseung Kwan O – Lam Tin Tunnel and
Associated Works” (TKO-LTT) under EP-458/2013/C, all works contracts except
Contract No. NE/2015/01 has been terminated on 17 July 2025 after the approval
by EPD. As Contract No. NE/2015/01 (under TKO-LTT) and Contract No. ED/2018/04
& ED/2020/03 (under Trunk Road T2) falls under the same EP-458/2013/C, the
reporting of the remaining EM&A works for Contract No. NE/2015/01 (Lam Tin
portion of TKO-LTT) will be subsumed into the EM&A reporting for the T2
project and presented as a single combined report starting from August 2025.
Purpose of the Report
1.7
This is the 66th Monthly EM&A Report
which summarises the impact monitoring results and audit findings for the
EM&A programme during the reporting period in October
2025.
Project Organizations
1.8
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) (For
ED/2018/04), GTECH Services (Hong Kong) Limited (For ED/2020/03)
and Leighton-China State Joint Venture (LCSJV) (For NE/2015/01)
1.9
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
(ED/2018/04)
|
Mr. Roy Leung
|
6628 2685
|
|
GTECH
|
Contractor
(ED/2020/03)
|
Mr. Deacon Choi
|
6038 3568
|
|
LCSJV
|
Contractor (NE/2015/01)
|
Mr. Valentine Ho
|
3973 0409
|
|
|
1.10
The Organizational Structure for Environmental Management
is shown in Figure 1.2.
Construction Activities undertaken during the Reporting Month
1.11
The major site activities undertaken in the reporting
month included:
Table 1.2 Summary of Key Construction Work in the
Reporting Month
|
Contract No.
|
Project Title
|
Site Activities
|
|
ED/2018/04
|
Trunk
Road T2 and Infrastructure Works for Developments at South Apron
|
·
Tunnel Internal Structure
·
EVB – ABWF
·
EVB – E&M works
|
|
ED/2020/03
|
Trunk
Road T2 – Traffic Control And Surveillance System
(TCSS) and Associated Works
|
·
Installation of TCSS equipment at T2 Branch Tunnel,
TKO-LTI, EVB
|
|
NE/2015/01
|
Tseung Kwan O – Lam Tin Tunnel–Main Tunnel and
Associated Works
|
·
Soft Landscape
·
Stage 1 Commissioning
Outstanding Works
|
1.12
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.
1.13
The advice on the implementation status of environmental
protection and pollution control/mitigation measures is summarized in Section 12 of this report.
1.14 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 October 2025.
Status of Environmental Licensing and Permitting
1.15
All permits/licenses obtained for the
Project are summarized in Table 1.3.
Table 1.3 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
|
|
ED/2018/04
|
Ref. No.: 451120
|
20 Nov 2019
|
N/A
|
Valid
|
|
NE/2015/01
|
Ref. No.: 405305
|
21 Jul 2016
|
N/A
|
Valid
|
|
Ref. No.: 405582
|
28 Jul 2016
|
N/A
|
Valid
|
|
Billing
Account for Construction Waste Disposal
|
|
ED/2018/04
|
A/C No.: 7036016
|
09 Dec 2019
|
N/A
|
Valid
|
|
NE/2015/01
|
A/C No.: 7025431
|
11 Jul 2016
|
N/A
|
Valid
|
|
Construction
Noise Permit
|
|
ED/2018/04
|
CNP No. (For
Portion Q): GW-RE0696-25
|
01 Jul 2025
|
31 Dec 2025
|
Valid
|
|
CNP No. (For
Portion T1): GW-RE0861-25
|
28 Jul 2025
|
27 Jan 2026
|
Valid
|
|
CNP No. (For
Portion U): GW-RE1150-25
|
01 Oct 2025
|
31 Mar 2026
|
Valid
|
|
Wastewater
Discharge License
|
|
ED/2018/04
|
WT00036699-2020
|
14 Jan 2021
|
31 Jan 2026
|
Valid
|
|
NE/2015/01
|
WT00039948-2021
|
28 Feb 2022
|
30 Nov 2026
|
Valid
|
|
WT00040291-2022
|
13 Jan 2022
|
30 Nov 2026
|
Valid
|
|
WT00041172-2022
|
09 Jun 2022
|
31 Mar 2027
|
Valid
|
|
WT00041237-2022
|
09 Jun 2022
|
31 Mar 2027
|
Valid
|
|
WT00041840-2022
|
17 Aug 2022
|
31 Aug 2027
|
Valid
|
|
Chemical
Waste Producer License
|
|
ED/2018/04
|
WPN:
5213-286-B2557-03
|
09 Mar 2020
|
N/A
|
Valid
|
|
NE/2015/01
|
WPN: 5218-290-L2881-02
|
22 Aug 2016
|
N/A
|
Valid
|
|
WPN: 5213-833-L2532-03
|
22 Aug 2016
|
N/A
|
Valid
|
2.
AIR
QUALITY
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.: 972777, 972778, 972779, 8Y2373)
|
4
|
|
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 meters 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 aluminium
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 was 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 be 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 refers 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 1.5m) 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
(October 2025),
μg/m3
|
|
AM1 – Tin Hau Temple
|
CL1
|
707
|
71.4
|
|
AM2 – Sai Tso Wan Recreation Ground
|
CL6
|
266
|
71.4
|
|
AM3 – Yau Lai Estate Bik Lai House
|
CL9
|
507
|
57.6
|
|
AM4 - Sitting-out Area at Cha Kwo Ling Village
|
CL16
|
430
|
63.0
|
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
(October 2025),
μg/m3
|
|
AM1 – Tin Hau Temple
|
CL1
|
199
|
24.2
|
|
AM2 – Sai Tso Wan Recreation Ground
|
CL6
|
109
|
30.0
|
|
AM3 – Yau Lai Estate Bik Lai House
|
CL9
|
123
|
65.0
|
|
AM4(B) – Flat 103 Cha Kwo Ling Village (*)
|
N/A (1)
|
N/A (1)
|
121.2 (**)
|
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
refers 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.
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.: 580238, 570188, 620258)
|
3
|
|
Calibrator
|
AWA6021A (Serial No.: 1023253, 1023064)
|
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
(October 2025),
Leq (30min) dB(A)
|
|
CM1 – Nga Lai House, Yau Lai Estate Phase 1, Yau Tong
|
N1102
|
73
|
67
|
|
CM2 – Bik Lai House, Yau Lai Estate Phase 1, Yau Tong
|
N1204
|
75
|
68
|
|
CM3 –
Block S, Yau Lai Estate Phase 5, Yau Tong
|
N2105
|
75
|
66
|
|
CM4 – Tin Hau Temple, Cha Kwo Ling
|
N3101a
|
73
|
61
|
|
CM5 – CCC Kei Faat Primary School, Yau Tong
|
N4101
|
71
|
68
|
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 are construction activities in vicinity of the cultural heritage.
9.
LANDSCAPE 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 for each contract were conducted as follows.
·
ED/2018/04 - Site audits were
conducted on 02, 09, 16, 23 & 30 October 2025 in the reporting month.
Site inspection of the IEC was conducted on 23 October
2025. No
non-compliance was observed during the site audit.
·
ED/2020/03 - Site audits were
conducted on 02, 09, 17, 23 & 30 October 2025 in the reporting month.
Site inspection of the IEC was conducted on 23 October
2025. No
non-compliance was observed during the site audit.
·
NE/2015/01 - Site audits were
conducted on 08, 15, 22 & 30 October 2025 in the reporting month.
Site inspection of the IEC was conducted on 22
October 2025.
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
|
30 September 2025
|
Open stockpile
should be well covered by impervious sheets to reduce dust emission.
|
The opened stockpile has been removed.
|
|
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
|
02 October
2025
|
Drip tray should
be provided to oil drum or chemical.
|
Chemical was removed.
|
|
22 October 2025
|
General refuse (i.e. water bottles) was found inside
drainage channel.
|
The
water bottles inside the drainage channel have been cleaned.
|
|
Permits
/Licences
|
N/A
|
There was no
observation in the reporting period.
|
N/A
|
Implementation Status of Event and
Action Plans
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:
Table 14.1 Site Activities and the Key Environmental Issues
in the next Reporting Period
|
Contract No. and Project Title
|
Site
Activities (November 2025)
|
Key Environmental Issues
|
|
ED/2018/04 - Trunk Road T2 and
Infrastructure Works for Developments at South Apron
|
·
Tunnel Internal Structure
·
EVB – ABWF
·
EVB –
E&M works
|
·
Dust generation from haul
road, stockpile of dusty materials, exposed site area, excavation works;
·
Noisy construction activity
such as breaking and drilling activities;
·
Runoff from exposed slope or
site area; and
·
Wastewater and runoff
discharge from site.
·
Accumulation of construction
waste or general refuse.
|
|
ED/2020/03 - Trunk Road T2 -
Traffic Control And Surveillance System (TCSS) and
Associated Works
|
·
Installation of TCSS equipment at T2 Branch Tunnel,
TKO-LTI, EVB
|
·
Accumulation of construction
waste or general refuse.
|
|
NE/2015/01 -
Tseung Kwan O–Lam Tin Tunnel–Main Tunnel and Associated Works
|
·
Soft Landscape
·
Stage 1 Commissioning
Outstanding Works
|
·
Dust generation from haul
road, stockpile of dusty materials, exposed site area, excavation works;
·
Runoff from exposed slope or
site area; and
·
Accumulation of construction
waste or general refuse.
|
14.3
The tentative environmental monitoring schedule for the
next month is shown in Appendix D.
15.
CONCLUSION AND RECOMMENDATION
Conclusions
15.1
This is the 66th 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
Five (5) ET joint weekly
environmental site inspections were conducted for the Contract No. ED/2018/04
and ED/2020/03
in the
reporting month.
15.7
Four (4) ET joint weekly
environmental site inspections were conducted for the Contract No. NE/2015/01 in the reporting month.
Complaint, Notification
of Summons and Successful Prosecution
15.8
No environmental complaint was received
in the reporting period. No notifications of summons and successful
prosecutions were received in the reporting month.
Recommendations
15.9
According to the environmental audit performed in the
reporting month, the following recommendations was made:
ED/2018/04
Waste Management
·
Drip tray should be provided
to the chemical container to avoid potential chemical leakage.
NE/2015/01
Air Quality
·
Open stockpile should be well
covered by impervious sheets to reduce dust emission.
Waste Management
·
General refuse should be
collected and removed in a timely manner.
