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Job
No.: TCS00975/18 |
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CEDD Contract Agreement No.
EDO/04/2018 - Environmental Team for Cross Bay Link, Tseung
Kwan O |
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Quarterly
Environmental Monitoring and Audit (EM&A) Summary Report (March to May
2022) |
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Prepared For |
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Civil Engineering and Development Department (CEDD) |
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Date |
Reference No. |
Prepared By |
Certified By |
1 August 2022 |
TCS00975/18/600/R0638v2 |
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Martin Li (Environmental Consultant) |
Tam Tak Wing (Environmental
Team Leader) |
Version |
Date |
Remarks |
1 |
15 July 2022 |
First Submission |
2 |
1 August
2022 |
Amended As Per
IEC¡¦s comment on 1 August 2022 |
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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 14th
Quarterly EM&A report presenting the monitoring results
and inspection findings for the reporting period from 1 March 2022 to 31 May 2022
(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 |
102 |
|
24-Hr TSP |
34 |
||
Construction Noise |
Leq (30min) Daytime |
42 |
|
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 |
13 |
Joint site
audit with Project Consultant and IEC |
3 |
||
Contract 2 |
ET Regular
Environmental Site Inspection |
13 |
|
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 monitoring exceedance was recorded in this Reporting Period. For
construction noise monitoring, two noise complaints were 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 |
2 |
0 |
Not Project Related |
-- |
Leq5min Evening |
0 |
0 |
-- |
-- |
|
Leq5min Night |
0 |
0 |
-- |
-- |
|
Water Quality
(Marine Water) |
DO |
0 |
0 |
-- |
-- |
Turbidity |
0 |
0 |
-- |
-- |
|
SS |
0 |
0 |
-- |
-- |
ES06
Three (3) 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 |
2 |
27 |
Noise |
Not related |
|
2 |
1 |
17 |
Water |
Not Project Related |
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 2022 ¡V 31 May 2022 |
1 |
0 |
0 |
NA |
NA |
2 |
0 |
0 |
NA |
NA |
Table ES-8 Summary Environmental
Prosecutions Records in the Reporting Period
Contract |
Environmental Prosecution Statistics |
Related with the Works Contract(s) |
|||
Frequency |
Cumulative |
Complaint Nature |
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1
March 2022 ¡V 31 May 2022 |
1 |
0 |
0 |
NA |
NA |
2 |
0 |
0 |
NA |
NA |
Site Inspection by
External Parties
ES08
No
site inspection was undertaken by EPD and AFCD within the Reporting Period.
Table of Contents
2. Project
Organization and Construction progress and Submission6
2.3 Summary of Environmental Submissions6
3. Summary
of Environmental Monitoring Programmes and Requirements7
3.4 Monitoring
Frequency and Period8
3.5 Determination
of Action/Limit (A/L) Levels9
4.1 Results
of Air Quality Monitoring in the Reporting Month11
4.2 Results
of Construction Noise Monitoring11
4.3 Results
of Water quality Monitoring1
5.1 General
Waste Management13
5.2 Records
of Waste Quantities13
6.2 Findings
/ Deficiencies During the Reporting Month14
7.2 Limit
Levels and Event and Action Plan15
8. Environmental
Complaint and Non-Compliance17
8.1 Environmental
Complaint, Summons and Prosecution17
9. Implementation
Status of Mitigation Measures18
10. Conclusions
and Recommendations19
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 14th
Quarterly EM&A report presenting the monitoring results and inspection
findings for the reporting period from 1
March 2022 to 31 May 2022 (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:-
Precast
segment fabrication, shell installation for Portion I.
Erection for bridge segment for Main Bridge at Portion I
Piling
Work for Portion I.
E&M work and External Work at Portion V.
Touch up paining and painting of east and west side spans ring
weld.
Welding of L3 parapet base plated on steel bridge.
Waterproofing works for division area, footpath area and cycle
track area for steel bridge.
Top tension and transverse tension, bottom tension, and external
tension at Portion II.
Construction of long stitching and planter wall at Portion II.
Concrete surrounding for ducting at Portion II.
Contract 2 (Contract
No. NE/2017/08)
2.2.3
The major construction activities of Contract 2 undertaken in this
Reporting Period are:-
UU Diversion
Road Work along Wan Po Road
Excavation and Demolition of existing wave wall at Portion I
Monitoring and Instrumentation works
RC construction for U-trough at Portion III, parapet at elevated
deck
RC construction for lift shaft and stair case
TCSS Cross road ducts installation at Wan Po Road
Modification of Type 1 Wave wall
Drainage work at Portion I, III
RC Construction of foundation at Wan O Road
Deck construction at cycle track ramp
Utilities installation along At Grade Road
SENB installation at At-Grade Road, Portion III, U-trough
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 |
1-hour TSP by Real-Time
Portable Dust Meter; and 24-hour TSP by High Volume
Air Sampler |
Noise |
Leq (30min) in six consecutive Leq(5 min) between 07:00-19:00 on normal
weekdays Supplementary
information for data auditing, statistical results such as L10 and
L90 shall also be obtained for reference. |
Water Quality |
In-situ measurement
¡V Dissolved Oxygen (DO) concentration (mg/L) & saturation (%), pH,
Salinity (mg/L), Temperature (ºC) and Turbidity (NTU); and Laboratory analysis
¡V 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
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 |
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.
2. 24-Hour TSP Air
Quality Monitoring at AM2 will be commenced once approval of High Volume
Sampler installation was obtained from Lohas Park 6.
Water Quality
3.3.4
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 |
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CC1 |
843201 |
816416 |
Sensitive
Receiver ¡V
Coral Sites at Chiu Keng Wan |
CC2 |
844076 |
817091 |
Sensitive
Receiver ¡V
Coral Sites at Junk Bay |
CC3 |
844606 |
817941 |
Sensitive
Receiver ¡V
Coral Sites at Junk Island |
CC4 |
845444 |
815595 |
Sensitive
Receiver ¡V
Coral Sites at Fat Tong Chau West |
CC13 |
844200 |
817495 |
Sensitive Receiver ¡V Coral Sites at Junk Bay
near Chiu Keng Wan |
SWI1 |
845512 |
817442 |
Sensitive
Receiver ¡V Tseung Kwan O Salt Water Intake |
C3 |
843821 |
816211 |
Control Station (Ebb Tide) ¡V within Junk Bay |
C4 |
844621 |
815770 |
Control Station (Flood Tide) ¡V within Junk Bay |
I1 |
844602 |
817675 |
Gradient Station ¡V 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:
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:
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.
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:
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 ¡Ñ 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
As notified that Lohas
Park Package 6 was available for resident occupation in late January 2021, air quality
monitoring at designated
monitoring location AM2 was therefore commenced in February 2021. Since
the installation of High Volume Sampler for 24-Hour TSP monitoring is still
under review by Property Management Team of Lohas Park
Package 6, an interim alternative monitoring location AM2a
was proposed for the 24-Hour TSP monitoring and was commenced on 13 July 2021
upon agreed by ER and IEC.
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 AM2a and AM5.
4.1.3
During the Reporting Period, 102 sessions of 1-hour TSP and 34 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 |
61 |
101 |
88 |
|
||
Record Date |
2-Mar-22 |
8-Mar-22 |
51 events |
|||
AM2a |
|
25 |
117 |
53 |
||
Record Date |
17-Feb-22 |
18-Mar-22 |
17 events |
|||
AM4 |
48 |
116 |
70 |
|
||
Record Date |
6-Apr-22 |
14-Mar-22 |
51 events |
|||
AM5 |
|
14 |
125 |
65 |
||
Record Date |
25-Apr-22 |
18-Mar-22 |
17 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 |
60.4 |
73.9 |
62.1 |
Record Date |
20-Apr-22 |
30-May-22 |
14
sessions |
CNMS-2 |
53.4 |
69.5 |
60.9 |
Record Date |
2-Mar-22 |
12-May-22 |
14
sessions |
CNMS-5 |
58.6 |
70.0 |
63.0 |
Record Date |
8-Mar-22 |
12-May-22 |
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 2022 |
Apr 2022 |
May 2022 |
|||
Total
Generated C&D Materials (Inert) (in '000m3) |
1 |
0.306 |
0.126 |
0.054 |
TKO 137 |
2 |
0.298 |
0.348 |
0.251 |
||
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 |
0.306 |
0.126 |
0.054 |
TKO 137 |
2 |
0.298 |
0.348 |
0.251 |
||
Imported
Fill (¡¥000m3) |
1 |
0 |
0 |
0 |
- |
2 |
0.780 |
0.567 |
0.422 |
- |
Table 5-2 Summary
of Quantities of C&D Wastes
Type of Waste |
Contract No |
Quantity |
Disposal Location |
||
Mar 2022 |
Apr 2022 |
May 2022 |
|||
Recycled Metal (¡¥000kg) |
1 |
0 |
0 |
0 |
- |
2 |
0 |
0 |
0 |
||
Recycled Paper / Cardboard
Packing (¡¥000kg) |
1 |
0.163 |
0.182 |
0.194 |
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 |
0.750 |
0.552 |
0.600 |
NENT |
2 |
0.072 |
0.067 |
0.110 |
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, 13 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
2022 |
2, 9, 17, 23 & 31 March 2022 |
7 |
Completed |
April 2022 |
6, 13, 20 & 27 April 2022 |
5 |
Completed |
May 2022 |
4, 11, 20 & 25 May 2022 |
1 |
Completed |
6.2.2
In the
Reporting Period, no non-compliance was recorded for Contract 1; however, 13 observations
were recorded during the site inspections and the major findings were related
to water quality 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, 13 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
2022 |
2, 9, 17, 23 & 31 March 2022 |
3 |
Completed |
April 2022 |
6, 13, 20 & 27 April 2022 |
3 |
Completed |
May 2022 |
4, 11, 20 & 25 May 2022 |
1 |
Completed |
6.2.4
In the
Reporting Period, no non-compliance was recorded for Contract 2; however, 7 observations
were recorded during the site inspections and the major findings were related
to 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) |
Post ¡§No Smoking¡¨
signs Prohibit hot works Ventilate to restore
methane to <10% LEL |
>20% LEL (i.e.
>1% by volume) |
Stop excavation
works Evacuate
personnel/prohibit entry Increase ventilation
to restore methane to <10% LEL |
|
Carbon dioxide |
>0.5% |
Ventilate to restore
carbon dioxide to <0.5% |
>1.5% |
Stop excavation
works Evacuate
personnel/prohibit entry Increase ventilation
to restore carbon dioxide to <0.5% |
|
Oxygen |
<19% |
Ventilation to
restore oxygen >19% |
<18% |
Stop excavation
works Evacuate personnel/prohibit
entry 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, landfill gas monitoring was conducted at the zone Wan O Road
which excavation work of Contract 2 was carried out.
7.3.2
There
were a total of 72 days monitoring were carried by the Safety Officer or an approved
and qualified persons. The results of landfill gas measurement
are summarized in Table 7-2.
Landfill
Gas Parameter |
Action Level |
Limit Level |
Detectable at LMR |
|
Min |
Max |
|||
Methane |
>10% LEL (>0.5% v/v) |
>20% LEL (>1% v/v) |
0.0% |
0.0% |
Oxygen |
<19% |
<18% |
20.3% |
21.1% |
Carbon Dioxide |
>0.5% |
>1.5% |
0.0% |
0.0% |
7.3.3
The measurement results shown that slightly
methane concentration was detected, oxygen concentration measured was over 19.0 %.
No exceedance was triggered and therefore no corrective action was
required accordingly.
8.1.1
In the Reporting Period, three (3) environmental complaints were received with respect to the noise nuisance
and water quality arising from the Project. Besides, no summons
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 ¡V 31 March 2022 |
1 |
0 |
25 |
NA |
1 ¡V 30 April 2022 |
1 |
26 |
Noise |
|
1 ¡V 31 May 2022 |
1 |
27 |
Noise |
|
1 ¡V 31 March 2022 |
2 |
0 |
16 |
NA |
1 ¡V 30 April 2022 |
0 |
16 |
NA |
|
1 ¡V 31 May 2022 |
1 |
17 |
Water |
Table 8-2 Statistical
Summary of Environmental Summons
Reporting Period |
Contract |
Environmental Complaint Statistics |
||
Frequency |
Cumulative |
Complaint Nature |
||
1 ¡V 31 March 2022 |
1 |
0 |
0 |
NA |
1 ¡V 30 April 2022 |
0 |
0 |
NA |
|
1 ¡V 31 May 2022 |
0 |
0 |
NA |
|
1 ¡V 31 March 2022 |
2 |
0 |
0 |
NA |
1 ¡V 30 April 2022 |
0 |
0 |
NA |
|
1 ¡V 31 May 2022 |
0 |
0 |
NA |
Table 8-3 Statistical
Summary of Environmental Prosecution
Reporting Period |
Contract |
Environmental Complaint Statistics |
||
Frequency |
Cumulative |
Complaint Nature |
||
1 ¡V 31 March 2022 |
1 |
0 |
0 |
NA |
1 ¡V 30 April 2022 |
0 |
0 |
NA |
|
1 ¡V 31 May 2022 |
0 |
0 |
NA |
|
1 ¡V 31 March 2022 |
2 |
0 |
0 |
NA |
1 ¡V 30 April 2022 |
0 |
0 |
NA |
|
1 ¡V 31 May 2022 |
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 |
¡P Regularly to
maintain all plants, so only the good condition plants were used on-site ; ¡P If possible,
all mobile plants onsite operation has located far from NSRs; ¡P When
machines and plants (such as trucks) were not in using, it was switched off; ¡P Wherever possible,
plant was prevented oriented
directly the nearby NSRs; ¡P Provided
quiet powered mechanical equipment to use onsite; ¡P Weekly noise
monitoring was conducted
to ensure construction noise meet the criteria. |
Air Quality |
¡P Stockpile of
dusty material was covered entirely with impervious sheeting or sprayed with
water so as to maintain the entire surface wet; ¡P The construction plants
regularly maintained to avoid the emissions of black smoke; ¡P The construction plants
switched off when it not in use; ¡P Water spraying on haul road and dry site area
was provided regularly; ¡P Where a vehicle leaving
the works site is carrying a load of dusty materials, the load has covered
entirely with clean impervious sheeting; and ¡P Before any vehicle leaving
the works site, wheel watering has been performed. |
Water Quality |
¡P
Debris and refuse generated on-site collected daily; ¡P
Oils and fuels were stored in designated areas; ¡P
The chemical waste storage as sealed area provided; ¡P
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 ¡P
Portable chemical toilets were provided on-site. A licensed contractor was regularly disposal and maintenance of these facilities. ¡P
Silt
curtain was installed and maintained in accordance with EP condition |
Waste and Chemical Management |
¡P Excavated material reused on site as far as possible to minimize
off-site disposal. ¡P Scrap metals or abandoned equipment should be recycled if possible; ¡P Waste arising kept to a minimum and be handled, transported and
disposed of in a suitable manner; ¡P Disposal of C&D wastes to any designated public filling facility
and/or landfill followed a trip ticket system; and ¡P Chemical waste
handled in accordance with the Code of Practice on the Packaging, Handling
and Storage of Chemical Wastes. |
General |
The site is
generally kept tidy and clean. Mosquito control is performed to prevent
mosquito breeding on site. |
10.1.1
This is the 14th Quarterly
EM&A report as presented the monitoring results and inspection findings for
the reporting period from 1 March 2022 to 31 May 2022.
10.1.2
In the Reporting Period, two
(2) action level exceedance for
construction noise was recorded due to two (2) noise complaint was recorded. Investigations
were undertaken by ET. The daytime construction noise action level exceedances
triggered are unlikely due to the Project.
10.1.3
In this Reporting Period, no 1-Hour TSP or
24-Hr TSP air quality monitoring exceedance was recorded. No NOE or the
associated corrective actions were therefore issued.
10.1.4
No water quality monitoring
was carried out in the reporting period.
10.1.5
In the Reporting Period, three (3) environmental complaints were
received with respect to the noise nuisance arising and water quality from the Project.
Investigation for the complaints were undertaken by ET
and it is considered that three complaints
were not Project related.
10.1.6
No
notification of summons or prosecution was received and recorded for the Project.
10.2.1
Due to
wet season is approaching, 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
Construction
noise would be the key environmental issue as Lohas Park Phase 4 & 6 were already available
for resident occupation. The 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.