executive summary
ES01
Civil Engineering and Development Department (hereafter referred as
“CEDD”) is the Project Proponent and the Permit Holder of the Project Cross Bay
Link, Tseung Kwan O (hereinafter referred as “the
Project”) which is a Designated Project to be implemented under Environmental
Permit number EP-459/2013 (hereinafter referred as “the EP-459/2013” or “the
EP”).
ES02
AUES was awarded the CEDD Contract Agreement No. EDO/04/2018 -
Environmental Team for Cross Bay Link, Tseung Kwan O
(hereinafter called “the Service Contract”). The Services under the Service
Contract is to provide environmental monitoring and audit (EM&A) services
for the Works Contracts pursuant to the requirement of Environmental Team (ET)
under the Approved EM&A Manual to ensure that the environmental performance
of the Works Contracts comply with the requirement specified in the EM&A
Manual and EIA Report of Agreement No. CE 43/2008 (HY) Cross Bay Link, Tseung Kwan O - Investigation and other relevant statutory
requirements.
ES03
This
is the 18th
Quarterly EM&A report presenting the monitoring results
and inspection findings for the reporting period from 1 March 2023 to 31 May 2023
(hereinafter ‘the Reporting Period’).
Environmental Monitoring and Audit Activities
ES04
Environmental
monitoring activities under the EM&A program in this Reporting Period are
summarized in the following table.
Table ES-4 Summary Environmental
Monitoring Activities Undertaken in the Reporting Period
|
Issues
|
Environmental Monitoring Parameters / Inspection
|
Sessions
|
|
Air Quality
|
1-Hour TSP
|
96
|
|
24-Hr TSP
|
32
|
|
Construction Noise
|
Leq (30min) Daytime
|
37
|
|
Leq (5min) Evening(Note 1)
|
0
|
|
Leq (5min) Night(Note 1)
|
0
|
|
Water Quality
|
Marine Water
Sampling(Note 2) (Note 3)
|
0
|
|
Inspection / Audit
|
Contract 1
|
ET Regular
Environmental Site Inspection
|
14
|
|
Joint site
audit with Project Consultant and IEC
|
3
|
|
Contract 2
|
ET Regular
Environmental Site Inspection
|
14
|
|
Joint site audit
with Project Consultant and IEC
|
3
|
Note
1 Total sessions are
counted by every 3 consecutive Leq5min
Note
2 Total sessions
are counted by monitoring days
Note 3 Since the marine construction
works that requires marine water quality monitoring as stated in the EM&A
Manual were completed, the impact water quality monitoring was ceased with
effect from 1 May 2020.
Breach of Action and Limit (A/L)
Levels
ES05
No air
quality and construction noise monitoring exceedance was recorded in this
Reporting Period. The statistics of environmental exceedance and investigation
of exceedance are summarized in the following table.
Table ES-5 Summary Environmental
Monitoring Parameter Exceedance in the Reporting Period
|
Environmental Issues
|
Monitoring Parameters
|
Action Level
|
Limit Level
|
Event & Action
|
|
Investigation Results
|
Corrective Actions
|
|
Air Quality
|
1-Hour TSP
|
0
|
0
|
--
|
--
|
|
24-Hr TSP
|
0
|
0
|
--
|
--
|
|
Construction Noise
|
Leq30min Daytime
|
0
|
0
|
--
|
--
|
|
Leq5min Evening
|
0
|
0
|
--
|
--
|
|
Leq5min Night
|
0
|
0
|
--
|
--
|
|
Water Quality
(Marine Water)
|
DO
|
0
|
0
|
--
|
--
|
|
Turbidity
|
0
|
0
|
--
|
--
|
|
SS
|
0
|
0
|
--
|
--
|
Environmental
Complaint
ES06
No environmental complaints were recorded in this Reporting Period for the
Project. The statistics of
environmental complaint are summarized in the following table.
Table ES-6 Summary Environmental
Complaint Records in the Reporting Period
|
Reporting Period
|
Contract
|
Environmental Complaint Statistics
|
Related with the Works Contract(s)
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
1 March
– 31 May 2023
|
1
|
0
|
33
|
NA
|
NA
|
|
2
|
0
|
26
|
Noise
|
No
|
Notification of Summons and Successful Prosecutions
ES07
No
environmental summons or prosecutions was received in this Reporting Period for
the Project. The statistics of
environmental summons or prosecutions are summarized in the following tables.
Table ES-7 Summary Environmental
Summons Records in the Reporting Period
|
Reporting Period
|
Contract
|
Environmental Summons Statistics
|
Related with the Works Contract(s)
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
1 March – 31 May 2023
|
1
|
0
|
0
|
NA
|
NA
|
|
2
|
0
|
0
|
NA
|
NA
|
Table ES-8 Summary Environmental
Prosecutions Records in the Reporting Period
|
Reporting
Period
|
Contract
|
Environmental Prosecution Statistics
|
Related with the Works Contract(s)
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
1
March – 31 May 2023
|
1
|
0
|
0
|
NA
|
NA
|
|
2
|
0
|
0
|
NA
|
NA
|
Table of Contents
1. Introduction 5
1.1 Project
Background 5
1.2 Report
Structure 5
2. Project
Organization and Construction progress and Submission 6
2.1 Project
Organization 6
2.2 Construction
Progress 6
2.3 Summary of Environmental Submissions 6
3. Summary
of Environmental Monitoring Programmes and Requirements 7
3.1 General 7
3.2 Monitoring
Parameters 7
3.3 Monitoring
Locations 7
3.4 Monitoring
Frequency and Period 8
3.5 Determination
of Action/Limit (A/L) Levels 9
4. Impact
Monitoring Result 11
4.1 Results
of Air Quality Monitoring in the Reporting Month 11
4.2 Results
of Construction Noise Monitoring 11
4.3 Results
of Water quality Monitoring 31
5. Waste
Management 13
5.1 General
Waste Management 13
5.2 Records
of Waste Quantities 13
6. Site
Inspection 14
6.1 Requirements 14
6.2 Findings
/ Deficiencies During the Reporting Month 14
7. Landfill
Gas Monitoring 15
7.1 General
Requirement 15
7.2 Limit
Levels and Event and Action Plan 15
7.3 Landfill
Gas Monitoring 15
8. Environmental
Complaint and Non-Compliance 17
8.1 Environmental
Complaint, Summons and Prosecution 17
9. Implementation
Status of Mitigation Measures 18
9.1 General
Requirements 18
10. Conclusions
and Recommendations 19
10.1 Conclusions 19
10.2 Recommendations 19
List
of TABLES
Table 3-1 Summary
of EM&A Requirements
Table 3-2 Designated
Air Quality Monitoring Location recommended in EM&A Manual
Table 3-3 Designated
Construction Noise Monitoring Location recommended in EM&A Manual
Table 3-4 Designated
and Interim alternative location for air quality and noise monitoring in the
Reporting Period
Table 3-5 Location
of Water Quality Monitoring Station
Table 3-6 Action
and Limit Levels for Air Quality
Table 3-7 Action
and Limit Levels for Construction Noise
Table 3-8 Action
and Limit Levels for Water Quality
Table 4-1 Summary
of Air Quality Impact Monitoring results
Table 4-2 Summary
of Daytime Construction Noise Impact Monitoring results
Table 5-1 Summary
of Quantities of Inert C&D Materials
Table 5-2 Summary
of Quantities of C&D Wastes
Table 6-1 Summary
of Site Observations of Contract 1
Table 6-2 Summary
of Site Observations of Contract 2
Table 7-1 Actions
in the Event of Landfill Gas Being Detected in Excavations
Table 8-1 Statistical
Summary of Environmental Complaints
Table 8-2 Statistical
Summary of Environmental Summons
Table 8-3 Statistical
Summary of Environmental Prosecution
Table 9-1 Environmental
Mitigation Measures in the Reporting Period
List
of Appendices
Appendix
A Project Layout
Plan
Appendix
B Project
Organization Chart & Contact Details of Key Personnel
Appendix
C 3-Month Rolling
Construction Program
Appendix
D Monitoring
Location (Air Quality, Noise and Water Quality)
Appendix
E Graphical plots of
Monitoring Results
Appendix
F Meteorological Information
Appendix
G Waste Flow Table
Appendix
H Complaint Summary
Appendix
I Implementation
Schedule for Environmental Mitigation Measures (ISEMM)
1.1.1
Civil Engineering and Development Department (hereafter referred
as “CEDD”) is the Project Proponent and the Permit Holder of the Project Cross
Bay Link, Tseung Kwan O (hereinafter referred as “the
Project”) which is a Designated Project to be implemented under Environmental
Permit number EP-459/2013 (hereinafter referred as “the EP-459/2013” or “the
EP”).
1.1.2
AUES was awarded the CEDD Contract Agreement No. EDO/04/2018 -
Environmental Team for Cross Bay Link, Tseung Kwan O
(hereinafter called “the Service Contract”). The Services under the Service
Contract is to provide environmental monitoring and audit (EM&A) services
for the Works Contracts pursuant to the requirement of Environmental Team (ET)
under the Approved EM&A Manual to ensure that the environmental performance
of the Works Contracts comply with the requirement specified in the EM&A
Manual and EIA Report of Agreement No. CE 43/2008 (HY) Cross Bay Link, Tseung Kwan O - Investigation and other relevant statutory
requirements.
1.1.3
As part of the EM&A programme,
baseline monitoring shall be undertaken before the Project construction work
commencement to determine the ambient environmental condition. The baseline air quality, background noise
and water quality monitoring has been carried out between 21st September 2018
and 13th November 2018 at the
designated and interim locations. The baseline monitoring report under the EP-459/2013 has been compiled
by the ET and verified by Independent Environmental Checker (hereinafter the
“IEC’) prior submitted to EPD on 19th November 2018 for
endorsement.
1.1.4
This
is the 18th
Quarterly EM&A report presenting the monitoring results and inspection
findings for the reporting period from 1
March 2023 to 31 May 2023 (hereinafter
‘the Reporting Period’).
1.2.1
The
Environmental Monitoring and Audit (EM&A) Monthly
Report is structured into the following sections:-
|
Section 1
|
Introduction
|
|
Section 2
|
Project Organization and
Construction Progress
|
|
Section 3
|
Summary
of Impact Monitoring Requirements
|
|
Section 4
|
Impact
Monitoring Results
|
|
Section 5
|
Waste
Management
|
|
Section 6
|
Site
Inspections
|
|
Section 7
|
Landfill Gas Monitoring
|
|
Section 8
|
Environmental
Complaints and Non-Compliance
|
|
Section 9
|
Implementation
Status of Mitigation Measures
|
|
Section 10
|
Conclusions
and Recommendations
|
2.1.1
The
project organization is shown in Appendix B. The responsibilities of
respective parties can be referred to Monthly Report.
2.2.1
3-month rolling construction program of each Works Contract is
enclosed in Appendix C; and the major
construction activities undertaken in the Reporting Period is presented in
below sub-sections.
Contract
1 (Contract No. NE/2017/07)
2.2.2
The major construction activities of Contract 1 undertaken in this
Reporting Period are:-
Ÿ E&M
SAT Work
Ÿ E&M
Pre-handover inspection
Ÿ E&M
defect rectification works
Ÿ E&M
Installation Pier Head Lighting
Contract 2 (Contract
No. NE/2017/08)
2.2.3
The major construction activities of Contract 2 undertaken in this
Reporting Period are:-
Ÿ
SENB rectification at
At-Grade Road and Wan O Road
Ÿ
SENB rectification at
Portion III, U-trough and Elevated Deck
Ÿ
Road Paving Work
Ÿ
Footpath and cycle track
paving work
Ÿ
Drainage CCTV Work
Ÿ
Replacement permanent drainpit cover
2.3
Summary of Environmental Submissions
2.3.1
All the documents required under Environmental Permit No.
EP-459/2013 were submitted within the required
timeframe. The details can be referred to the Monthly Report.
2.3.2
Upon completed baseline monitoring, a Baseline Monitoring Report was verified by IEC on 19
November 2018 and submitted to EPD on that day for endorsement.
2.3.3
The notification
of Project dedicated web site to EPD was made on 9 January 2019 (http://www.envcbltko.hk/).
3.1.1
The Environmental Monitoring and Audit Programmes
and requirements are set out in the Approved EM&A manual. Environmental issues such as air quality,
construction noise and water quality were identified as the key issues during
the construction phase of the Project.
A summary of EM&A programmes and requirements
are
presented in the sub-sections below.
3.2.1
Monitoring parameters of air quality, noise and water quality are
summarized in Table 3-1.
Table 3-1 Summary
of EM&A Requirements
|
Environmental
Issue
|
Parameters
|
|
Air Quality
|
Ÿ 1-hour TSP by Real-Time
Portable Dust Meter; and
Ÿ 24-hour TSP by High Volume
Air Sampler
|
|
Noise
|
Ÿ Leq (30min) in six consecutive Leq(5 min) between 07:00-19:00 on normal
weekdays
Ÿ Supplementary
information for data auditing, statistical results such as L10 and
L90 shall also be obtained for reference.
|
|
Water Quality
|
Ÿ In-situ measurement
– Dissolved Oxygen (DO) concentration (mg/L) & saturation (%), pH,
Salinity (mg/L), Temperature (ºC) and Turbidity (NTU); and
Ÿ Laboratory analysis
– SS (mg/L)
|
Air Quality and Construction Noise
3.3.1
According to
the Approved EM&A Manual Section 5.4
and Section 6.3, three (3) representative air sensitive receivers (ASR)
and four (4) representative noise sensitive receivers
were designated as monitoring stations.
The designated air quality and noise monitoring locations are listed in Table
3-2 and Table 3-3, and illustrated in Appendix D.
Table 3-2 Designated Air
Quality Monitoring Location recommended in
EM&A Manual
|
ID
|
Location
in the EM&A Manual
|
Currently Situation
|
|
AM1
|
Tung Wah
Group of Hospitals Aided Primary School & Secondary School
|
Not yet
construct
|
|
AM2
|
Lohas Park Stage 2
(Planned Development in Area 86)
|
Available for
resident occupation in February 2021
|
|
AM3
|
Lohas Park Stage 3
(Planned Development in Area 86)
|
Under
Construction
|
Table 3-3 Designated
Construction Noise Monitoring Location recommended by
EM&A Manual
|
ID
|
Location
|
Currently Situation
|
|
CNMS-1
|
Lohas Park Stage
1(Planned Development in Area 86, Package 5) (Southeast facade)
|
Available for
resident occupation in November 2019
|
|
CNMS-2
|
Lohas Park Stage 1
(Planned Development in Area 86, Package 6) (Southeast facade)
|
Available for
resident occupation in February 2021
|
|
CNMS-3
|
Lohas Park Stage 3
(Planned Development in Area 86,Package 11) (West facade)
|
Under
Construction
|
|
CNMS-4
|
Tung Wah Group of Hospitals
Aided Primary School & Secondary School (Southwest facade)
|
Not yet
construct
|
3.3.2
As observed and confirmed by ET and IEC during the joint site visit on 29th August 2018, the
designated air quality and noise
monitoring locations are under construction or yet to construct. It is considered that these
designated locations are not appropriate to perform air quality and noise
monitoring. In this regard, alternative locations were proposed as interim arrangement to
carry out air quality and noise monitoring before occupation of the designated
monitoring location. A letter enclosed with the alternative location proposal
and IEC verification (Our Ref: TCS00975/18/300/L0038) was sent to EPD on 19th
October 2018 and the proposal was agreed by EPD. Therefore, air
quality and construction noise impact monitoring would be performed at the
agreed alternative locations until the designated sensitive receivers occupied
and granted the premises.
3.3.3
Construction
noise monitoring for Lohas Park Phase 4 was commenced
in November 2019 while 1-Hour TSP air quality and construction noise monitoring
was commenced in February 2021 regarding the handover of residential units to
purchasers. Since power supply is not available from Lohas
Park Phase 6 and is only available near the site office after Cross Bay Link
opened in December 2022, an interim alternative monitoring location AM2b was
proposed for the 24-Hour TSP monitoring of Lohas Park
Phase 6 due to the limitation on the power supply for the HVS.
3.3.4
The designated and interim alternative
monitoring location for impact air quality and
noise monitoring in the Reporting Period are summarized in Table 3-4 and illustrated in Appendix
D.
Table 3-4 Designated and interim alternative location
for air quality and noise monitoring in the Reporting Period
|
Location ID
|
Monitoring Parameter
|
Location
|
|
AM2
|
1-Hour TSP Air
Quality
|
Lohas Park Phase 6
|
|
AM2b
|
24-Hour TSP Air
Quality
|
Near Lohas Park Phase 6
|
|
AM4
|
1-Hour TSP Air
Quality
|
Podium of Lohas Park Phase 2A (Le Prestige)
|
|
AM5
|
24-Hour TSP Air Quality
|
Boundary of Site Office near Junction of Wan Po Road and Wan O Road
|
|
CNMS-1
|
Noise (Leq, L10 & L90)
|
Podium of Lohas Park Package 4
|
|
CNMS-2
|
Noise (Leq, L10 & L90)
|
Lohas Park Package 6
|
|
CNMS-5
|
Noise (Leq, L10 & L90)
|
Podium of Lohas Park Phase 2A (Le Prestige)
|
Remark:
1. Since 24-Hour
TSP Air Quality monitoring is not granted at AM4 Lohas
Park Phase 2A, the 24-Hour TSP monitoring was therefore proposed at AM5 which
is located at the boundary of the project site office.
Water Quality
3.3.5
According to
Table 7.1 of the
approved EM&A Manual Section 7.4, two Control
Stations (C3 & C4), six (6) sensitive
receivers (CC1, CC2, CC3, CC4, CC13
& SWI1) and one (1) Gradient station (I1) are
recommended to perform water quality monitoring. Details and
coordinate of these water quality monitoring stations are described in Table
3-5 and the locations is shown in Appendix D.
Table 3-5 Location of Water Quality
Monitoring Station
|
Station
|
Coordinates
|
Description
|
|
Easting
|
Northing
|
|
CC1
|
843201
|
816416
|
Sensitive
Receiver –
Coral Sites at Chiu Keng Wan
|
|
CC2
|
844076
|
817091
|
Sensitive
Receiver –
Coral Sites at Junk Bay
|
|
CC3
|
844606
|
817941
|
Sensitive
Receiver –
Coral Sites at Junk Island
|
|
CC4
|
845444
|
815595
|
Sensitive
Receiver –
Coral Sites at Fat Tong Chau West
|
|
CC13
|
844200
|
817495
|
Sensitive Receiver – Coral Sites at Junk Bay
near Chiu Keng Wan
|
|
SWI1
|
845512
|
817442
|
Sensitive
Receiver – Tseung Kwan O Salt Water Intake
|
|
C3
|
843821
|
816211
|
Control Station (Ebb Tide) – within Junk Bay
|
|
C4
|
844621
|
815770
|
Control Station (Flood Tide) – within Junk Bay
|
|
I1
|
844602
|
817675
|
Gradient Station – in between Lam Tin Tunnel (LTT) and CBL
|
3.4.1
To according with the approved EM&A Manual, impact monitoring requirements are presented as
follows.
Air Quality Monitoring
3.4.2
Air quality impact monitoring frequency is
as follows:
Ÿ Once every 6 days of 24-hour TSP and 3 times of 1-hour TSP monitoring; during course of works throughout the construction period.
Construction Noise Monitoring
3.4.3
Construction noise monitoring frequency is
as follows:
Ÿ One set of Leq(30min)
measurements in a weekly basis between 07:00 and 19:00 hours on normal
weekdays during
course of works as throughout
the construction period.
Ÿ If construction works are
extended to include works during the hours of 1900-0700, additional weekly
impact monitoring shall be carried out during evening and night-time works.
Applicable permits under the NCO shall be obtained by the Contractor.
Water Quality (Marine Water) Monitoring
3.4.4
Marine water impact monitoring frequency
is as follows:
Ÿ Three days a week, at mid ebb and mid flood
tides during
course of pile excavation works for the bridge pier foundations underway. Moreover, the intervals between 2 consecutive sets of monitoring day
shall not be less than 36 hours.
3.5.1
The baseline results form the basis for determining the
environmental acceptance criteria for the impact monitoring. A summary of the Action/Limit (A/L)
Levels for air quality, construction noise and water quality are shown in Tables
3-6, 3-7 and 3-8 respectively.
Table
3-6 Action & Limit Levels of Air
Quality (1-Hour & 24-Hr TSP)
|
Monitoring Station
|
Action Level (mg /m3)
|
Limit Level (mg/m3)
|
|
1-Hour TSP
|
24-Hr TSP
|
1-Hour TSP
|
24-Hr TSP
|
|
AM2
|
278
|
NA
|
500
|
NA
|
|
AM4
|
278
|
NA
|
500
|
NA
|
|
AM5
|
NA
|
190
|
NA
|
260
|
|
Note: 1-Hour
& 24-Hr TSP of Action Level = (Average
Baseline Results × 1.3 + Limit
level)/2
|
Table 3-7 Action
and Limit Levels for Construction Noise, dB(A)
|
Monitoring Location
|
Action Level
|
Limit Level
(Leq30min)
|
|
Time Period: 0700-1900 hours
on normal weekdays
|
|
CNMS-1
CNMS-2
CNMS-5
|
When
one or more documented complaints are received
|
75 dB(A)
|
|
Time
Period: 1900-2300 hours on all days (Leq15min)
|
|
When one or more documented complaints are received
|
55 dB(A)
|
|
Remarks:
1.
Construction noise monitoring
will be resumed at the designated locations CNMS-3 and CNMS4 once they are
available and permission are granted;
2.
The designated locations CNMS-3
is located at residential building which is still under construction, Limit Level of 75dB(A) will be adopted
until they are occupied;
3.
The designated location
CNMS-4 is located at
planned school and still not yet to construction. When the school occupied and operated, Limit Level of 70dB(A) should be
adopted and should be reduced to 65dB(A) during examination period; and
4.
If
construction works are required during restricted hours, the conditions
stipulated in the construction noise permit issued by the
Noise Control Authority shall be followed.
|
Table
3-8 Action
and Limit Levels for Water Quality
|
Monitoring Station
|
Depth Average of SS (mg/L)
|
|
Action Level
|
Limit Level
|
|
CC1
|
7.8
|
OR
120% of upstream control station at the same tide of the same day
(Control Station C3 at Ebb tide and Control Station C4 at Flood tide),
whichever is higher
|
9.3
|
OR
130% of upstream control station at the same tide of the same day
(Control Station C3 at Ebb tide and Control Station C4 at Flood tide)
, whichever is higher
|
|
CC2
|
9.0
|
9.2
|
|
CC3
|
8.2
|
9.0
|
|
CC4
|
13.8
|
15.4
|
|
CC13
|
8.9
|
10.3
|
|
SWI1
|
8 mg/L
|
10 mg/L
|
|
|
Monitoring Location
|
Dissolved
Oxygen (mg/L)
|
|
Depth
Average of Surface and Mid-depth
|
Bottom
|
|
Action
Level
|
Limit Level
|
Action
Level
|
Limit Level
|
|
CC1
|
5.8
|
5.7
|
5.3
|
5.2
|
|
CC2
|
5.8
|
5.7
|
5.3
|
5.1
|
|
CC3
|
5.5
|
5.4
|
4.9
|
4.7
|
|
CC4
|
5.7
|
5.7
|
5.5
|
5.4
|
|
CC13
|
5.6
|
5.5
|
5.3
|
5.2
|
|
SWI1
|
5.4
|
4.8
|
5.1
|
5.0
|
|
|
|
Monitoring Location
|
Depth Average of Turbidity (NTU)
|
|
Action Level
|
Limit Level
|
|
CC1
|
5.8
|
OR
120% of upstream control station at the same tide of the same day
(Control Station C3 at Ebb tide and Control Station C4 at Flood tide)
, whichever is higher
|
6.0
|
OR
130% of upstream control station at the same tide of the same day
(Control Station C3 at Ebb tide and Control Station C4 at Flood tide)
, whichever is higher
|
|
CC2
|
4.6
|
5.5
|
|
CC3
|
4.8
|
5.4
|
|
CC4
|
6.1
|
7.1
|
|
CC13
|
6.0
|
6.3
|
|
SWI1
|
6.1
|
7.1
|
|
|
|
|
|
|
|
3.5.2
Should
non-compliance of the environmental quality criteria occurs, remedial actions
will be triggered according to the Event and Action Plan as stated EM&A
Manual.
4.1.1
24-Hour
TSP impact monitoring for Lohas Park Phase 6 (LP6)
was originally carried out at interim alternative impact monitoring location
AM2a where power supply was provided by the Contractor. Upon the opening of
Cross Bay Link on 10 December 2022, power supply is no longer available for AM2a from Contractor. Therefore
a new interim alternative impact monitoring location AM2b was proposed and was
commenced immediately to resume 24-Hour TSP monitoring for LP6.
4.1.2
In the Reporting Period, 1-Hour TSP monitoring was performed at designated monitoring location
AM2 and interim alternative monitoring
locations AM4, and 24-Hr TSP of air quality monitoring was performed at interim alternative monitoring locations AM2b and AM5.
4.1.3
During the Reporting Period, 96 sessions of 1-hour TSP and 32 sessions of 24-hours TSP monitoring were carried out and the monitoring
results are summarized in Table 4-1. The relevant graphical plots are shown in Appendix E.
Table 4-1 Summary
of Air Quality Impact Monitoring Results
|
Monitoring Location
|
1-hour TSP (µg/m3)
|
24-hour TSP (µg/m3)
|
|
Min
|
Max
|
Average
|
Min
|
Max
|
Average
|
|
AM2
|
46
|
108
|
79
|
|
|
Record Date
|
13-May-23
|
14-Apr-23
|
48 events
|
|
AM2b
|
|
27
|
160
|
76
|
|
Record Date
|
31-Mar-23
|
14-Mar-23
|
16 events
|
|
AM4
|
47
|
117
|
76
|
|
|
Record Date
|
13-May-23
|
14-Apr-23
|
48 events
|
|
AM5
|
|
47
|
171
|
100
|
|
Record Date
|
17-May-22
|
14-Mar-23
|
16 events
|
4.1.4
As
shown in Table 4-1, all the 1-hour TSP and 24-hour TSP monitoring
results were below the Action / Limit Levels. No Notification of Exceedance (NOE) was
issued in this Reporting Period.
4.1.5
No adverse impact due to weather condition on the monitoring
result was observed in reporting quarter. The summary of meteorological
information for the Reporting Period is shown in Appendix F.
4.2.1
14
sessions of daytime construction noise monitoring were performed at the designated location CNMS-1, CNMS-2 and
interim alternative monitoring location CNMS-5 respectively in the reporting
period. The daytime noise
monitoring results at designated location CNMS-1 and CNMS-2, and interim
alternative monitoring location CNMS-5 are summarized in Table 4-2. The relevant graphical plots are shown in Appendix E.
Table 4-2 Summary
of Daytime Construction Noise Impact Monitoring Results
|
Monitoring
Location
|
Leq, 30min (dB((A))
|
|
Min
|
Max
|
Average
|
|
CNMS-1
|
57.7
|
72.4
|
62.6
|
|
Record Date
|
20-Apr-22
|
11-Apr-23
|
14
sessions
|
|
CNMS-2
|
58.9
|
63.5
|
60.5
|
|
Record Date
|
2-May-23
|
9-Mar-23
|
14
sessions
|
|
CNMS-5
|
59.6
|
64.4
|
62.6
|
|
Record Date
|
20-Apr-23
|
11-Apr-23
|
14
sessions
|
4.2.2
All the measured daytime construction noise results were below 75dB(A)
of the limit level acceptance criteria.
4.3.1
According to the approved EM&A
Manual Section 7.6.1, the impact marine water quality monitoring work shall be
carried out during the CBL piling and pile excavation works (marine
construction activity) of the Project. Impact marine water quality monitoring
was commenced in December 2018 when CBL piling and pile excavation works
started.
4.3.2
As confirmed, all the marine piling and
piling excavation work were completed in January 2020 and all pile cap
installation work was completed in mid-March 2020. Due to the marine
construction works that requires marine water quality monitoring as stated in
the EM&A Manual were completed, the impact water quality monitoring was
ceased with effect from 1 May 2020 and IEC has no particular comment on this
arrangement.
4.3.3
No impact water quality monitoring was
therefore carried out in the reporting period.
5.1.1
Waste management would be carried out by an on-site Environmental
Officer or an Environmental Consultant from time to time.
5.2.1
All
types of waste arising from the construction work are classified into the
following:
l Construction & Demolition (C&D)
Material;
l Chemical Waste; and
l General Refuse
5.2.2
According to the information provided by Contractor
of Contract 1 and Contract 2, waste disposal was made in the Reporting period are summarized in Tables 5-1 and 5-2.
Table 5-1 Summary of
Quantities of Inert C&D Materials
|
Type of Waste
|
Contract
No
|
Quantity
|
Disposal Location
|
|
Mar 2023
|
Apr 2023
|
May 2023
|
|
Total
Generated C&D Materials (Inert) (in '000m3)
|
1
|
0.006
|
0
|
0
|
TKO 137
|
|
2
|
0.014
|
0.015
|
0.014
|
|
Reused in this Project
(Inert)
(in '000m3)
|
1
|
0
|
0
|
0
|
-
|
|
2
|
0
|
0
|
0
|
-
|
|
Reused in other Projects
(Inert)
(in '000m3)
|
1
|
0
|
0
|
0
|
-
|
|
2
|
0
|
0
|
0
|
-
|
|
Disposal
as Public Fill (Inert)
(in '000m3)
|
1
|
0.006
|
0
|
0
|
TKO 137
|
|
2
|
0014
|
0.015
|
0.014
|
|
Imported
Fill (‘000m3)
|
1
|
0
|
0
|
0
|
-
|
|
2
|
0
|
0
|
0
|
-
|
Table 5-2 Summary
of Quantities of C&D Wastes
|
Type of Waste
|
Contract
No
|
Quantity
|
Disposal Location
|
|
Mar 2023
|
Apr 2023
|
May 2023
|
|
|
1
|
0
|
0
|
0
|
-
|
|
2
|
0
|
0
|
0
|
|
Recycled Paper / Cardboard
Packing (‘000kg)
|
1
|
0.215
|
0.192
|
0.205
|
Licensed collector
|
|
2
|
0
|
0
|
0
|
|
Recycled Plastic (‘000kg)
|
1
|
0
|
0
|
0
|
-
|
|
2
|
0
|
0
|
0
|
|
Chemical Wastes (‘000kg)
|
1
|
0
|
0
|
0
|
-
|
|
2
|
0
|
0
|
0
|
|
General Refuses (‘000m3)
|
1
|
0.243
|
0.063
|
0.033
|
NENT
|
|
2
|
0.020
|
0
|
0.006
|
5.2.3
The Monthly Summary Waste Flow Table of the Contracts 1 and
Contract 2 are shown in Appendix G.
6.1.1
According
to the approved EM&A Manual, the environmental site inspection shall be
formulation by ET Leader. Weekly
environmental site inspections should carry out to confirm the environmental
performance.
Contract 1
6.2.1
In this Reporting Period, 14 events of
weekly joint site
inspection was carried out for Contract 1 to evaluate site environmental performance. The summaries of the findings during site
inspection are presented in Table 6-1 and the details of site
inspection can be found in relevant EM&A monthly
report.
Table 6-1 Summary
of Site Observations of the Contract 1
|
Reporting Period
|
Date of site inspection
|
Nos. of Findings/ Deficiencies
|
Follow-Up Status
|
|
March
2023
|
1, 8, 16, 22 & 28 March 2023
|
0
|
Completed
|
|
April
2023
|
6, 12, 19 & 24 April 2023
|
1
|
Completed
|
|
May
2023
|
3, 11, 17, 24 & 31 May 2023
|
2
|
Completed
|
6.2.2
In the
Reporting Period, no non-compliance was recorded for Contract 1; however, 3 observations
were recorded during the site inspections and the major findings were related
to dust control and chemical management mitigation measures. Details of the
findings of the inspection in the reporting period can be referred to the
Monthly EM&A Report. The
findings found in the weekly site inspection were in general rectified within
the specified deadlines. The environmental performance of the Project was
therefore considered satisfactory.
Contract 2
6.2.3
In this Reporting Period, 14 events of
weekly joint site
inspection was carried out for Contract 2 to evaluate site environmental performance. The summaries of the findings during site
inspection are presented in Table 6-2 and the details of site
inspection can be found in relevant EM&A monthly
report.
Table 6-2 Summary
of Site Observations of the Contract 2
|
Reporting Period
|
Date of site inspection
|
Nos. of Findings/ Deficiencies
|
Follow-Up Status
|
|
March
2023
|
1, 8, 16, 22 & 28 March 2023
|
0
|
Completed
|
|
April
2023
|
6, 12, 19 & 24 April 2023
|
1
|
Completed
|
|
May
2023
|
3, 11, 17, 24 & 31 May 2023
|
0
|
Completed
|
6.2.4
In the
Reporting Period, no non-compliance was recorded for Contract 2; however, 1 observation
were recorded during the site inspections and the major findings were related
to dust control, general housekeeping and chemical management mitigation
measures. Details of the findings
of the inspection in the reporting period can be referred to the Monthly
EM&A Report. The findings
found in the weekly site inspection were in general rectified within the
specified deadlines. The
environmental performance of the Project was therefore considered satisfactory.
7.1.1
Pursuant to
Section 13 of the Project’s EM&A Manual, Landfill gas monitoring shall
perform during construction activities within the 250m Consultation Zone of Tseung Kwan O Stage II & III Landfill. For landfill gas monitoring
requirements, pre entry and routine measurement shall be undertaken
in accordance with the Factories and Industrial Undertaking (Confined
Spaces) Regulation.
7.1.2
According to Environmental Mitigation Implementation Schedule
(EMIS) S14.7.6, portable monitoring equipment can be used to conduct landfill
gas monitoring. Moreover, the
frequency and areas to be monitored should be set down prior to commencement of
the works either by the Safety Officer or by an appropriately qualified person.
7.2.1
In event of the trigger levels specified in Table 14.6 of the EIA
report being exceeded, a person, such as the Safety Officer, shall be
nominated, with deputies, to be responsible for dealing with any emergency
which may occur due to LFG. In an emergency situation the nominated
person, or his deputies, shall have the necessary authority and shall ensure
that the confined space is evacuated and the necessary works implemented for
reducing the concentrations of gas.
The
Limit levels and relevant Action Plans for landfill gas detected in utilities
and any on-site areas following construction is
listed in Table 7-1.
Table 7-1 Actions in the Event of Landfill Gas Being Detected in
Excavations
|
Parameter
|
Limit Level
|
Actions
|
|
Methane
|
>10% LEL (i.e.
>0.5% by volume)
|
Ÿ Post “No Smoking”
signs
Ÿ Prohibit hot works
Ÿ Ventilate to restore
methane to <10% LEL
|
|
>20% LEL (i.e.
>1% by volume)
|
Ÿ Stop excavation
works
Ÿ Evacuate
personnel/prohibit entry
Ÿ Increase ventilation
to restore methane to <10% LEL
|
|
Carbon dioxide
|
>0.5%
|
Ÿ Ventilate to restore
carbon dioxide to <0.5%
|
|
>1.5%
|
Ÿ Stop excavation
works
Ÿ Evacuate
personnel/prohibit entry
Ÿ Increase ventilation
to restore carbon dioxide to <0.5%
|
|
Oxygen
|
<19%
|
Ventilation to
restore oxygen >19%
|
|
<18%
|
Ÿ Stop excavation
works
Ÿ Evacuate personnel/prohibit
entry
Ÿ Increase ventilation
to restore oxygen to >19%
|
7.2.2
In the event of the trigger levels specified in Table 9-1 being
exceeded, the Safety Officer shall be responsible for dealing with any
emergency which may occur due to landfill gas.
7.3.1
In the
Reporting Period, no landfill gas monitoring was conducted as all the
excavation work of Contract 2 was completed.
8.1.1
In the Reporting Period, no environmental complaint was received for the Project. Besides, no summon and
prosecution under the EM&A Programme was lodged
for the project. The
statistical summary table of environmental complaint is presented in Tables
8-1, 8-2 and 8-3. A summarized record of all complaints
received was provided in Appendix H.
Table 8-1 Statistical
Summary of Environmental Complaints
|
Reporting Period
|
Contract
|
Environmental Complaint Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
1 – 31 March 2023
|
1
|
0
|
33
|
NA
|
|
1 – 30 April 2023
|
0
|
33
|
NA
|
|
1 – 31 May 2023
|
0
|
33
|
NA
|
|
1 – 31 March 2023
|
2
|
0
|
26
|
NA
|
|
1 – 30 April 2023
|
0
|
26
|
NA
|
|
1 – 31 May 2023
|
0
|
26
|
NA
|
Table 8-2 Statistical
Summary of Environmental Summons
|
Reporting Period
|
Contract
|
Environmental Complaint Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
1 – 31 March 2023
|
1
|
0
|
0
|
NA
|
|
1 – 30 April 2023
|
0
|
0
|
NA
|
|
1 – 31 May 2023
|
0
|
0
|
NA
|
|
1 – 31 March 2023
|
2
|
0
|
0
|
NA
|
|
1 – 30 April 2023
|
0
|
0
|
NA
|
|
1 – 31 May 2023
|
0
|
0
|
NA
|
Table 8-3 Statistical
Summary of Environmental Prosecution
|
Reporting Period
|
Contract
|
Environmental Complaint Statistics
|
|
Frequency
|
Cumulative
|
Complaint Nature
|
|
1 – 31 March 2023
|
1
|
0
|
0
|
NA
|
|
1 – 30 April 2023
|
0
|
0
|
NA
|
|
1 – 31 May 2023
|
0
|
0
|
NA
|
|
1 – 31 March 2023
|
2
|
0
|
0
|
NA
|
|
1 – 30 April 2023
|
0
|
0
|
NA
|
|
1 – 31 May 2023
|
0
|
0
|
NA
|
9.1.1
The environmental mitigation measures that recommended in the
Implementation Schedule for Environmental Mitigation Measures (ISEMM) in the approved
EM&A Manual covered the issues of dust, noise,
water and waste and they are summarized presented in Appendix I.
9.1.2
The Contractors had
been implementing the required environmental mitigation measures according to the
Environmental Monitoring and Audit Manual subject to
the site condition. Environmental
mitigation measures generally implemented by the Contractors in this Reporting
Month are summarized in Table 9-1.
Table 9-1 Environmental
Mitigation Measures in the Reporting Period
|
Issues
|
Environmental Mitigation Measures
|
|
Construction Noise
|
· Regularly to
maintain all plants, so only the good condition plants were used on-site ;
· If possible,
all mobile plants onsite operation has located far from NSRs;
· When
machines and plants (such as trucks) were not in using, it was switched off;
· Wherever
possible, plant was prevented oriented
directly the nearby NSRs;
· Provided
quiet powered mechanical equipment to use onsite;
· Weekly noise
monitoring was conducted
to ensure construction noise meet the criteria.
|
|
Air Quality
|
· Stockpile of
dusty material was covered entirely with impervious sheeting or sprayed with
water so as to maintain the entire surface wet;
· The construction plants
regularly maintained to avoid the emissions of black smoke;
· The construction plants
switched off when it not in use;
· Water spraying on haul road and dry site area
was provided regularly;
· Where a vehicle leaving
the works site is carrying a load of dusty materials, the load has covered
entirely with clean impervious sheeting; and
· Before any vehicle leaving
the works site, wheel watering has been performed.
|
|
Water Quality
|
·
Debris and refuse generated on-site collected daily;
·
Oils and fuels were stored in designated areas;
·
The chemical waste storage as sealed area provided;
·
Site hoarding with sealed
foot were provided surrounding the boundary of working site to prevent
wastewater or site surface water runoff get into public areas; and
·
Portable chemical toilets were provided on-site. A licensed contractor was regularly disposal and maintenance of these
facilities.
·
Silt
curtain was installed and maintained in accordance with EP condition
|
|
Waste and Chemical Management
|
· Excavated material reused on site as far as possible to minimize
off-site disposal.
· Scrap metals or abandoned equipment should be recycled if possible;
· Waste arising kept to a minimum and be handled, transported and
disposed of in a suitable manner;
· Disposal of C&D wastes to any designated public filling facility
and/or landfill followed a trip ticket system; and
· Chemical waste
handled in accordance with the Code of Practice on the Packaging, Handling
and Storage of Chemical Wastes.
|
|
General
|
Ÿ The site is
generally kept tidy and clean.
Ÿ Mosquito control is performed to prevent
mosquito breeding on site.
|
10.1.1
This is the 18th Quarterly
EM&A report as presented the monitoring results and inspection findings for
the reporting period from 1 March 2023 to 31 May 2023.
10.1.2
In this Reporting Period, no 1-Hour TSP or
24-Hr TSP air quality monitoring exceedance, and no construction noise
monitoring exceedance was recorded. No NOE or the associated corrective actions
were therefore issued.
10.1.3
No water quality monitoring
was carried out in the reporting period.
10.1.4
In the
Reporting Period, no environmental complaint was recorded for the Project. No
notification of summon or prosecution was received and recorded for the Project.
10.2.1
Due to
wet season has approached, the Contractor was reminded that all the works being
undertaken must fulfill environmental statutory requirements and to paid
attention to water quality mitigation measures to prevent surface runoff into
nearby water bodies or public areas.
10.2.2
Although
opening of Cross Bay Link was held in early December 2022, construction noise
from the remaining work of the Project would be the key environmental issue as
the work areas are located near Lohas Park. Noise
mitigation measures such as use of quiet plants and installation of temporary
noise barrier at the construction noise predominate area should be fully
implemented in accordance with the EM&A requirement.
