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 2nd
Quarterly EM&A report presenting the monitoring results and inspection
findings for the reporting period from 1st March 2019 to 31st May 2019
(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
|
48
|
|
24-Hr TSP
|
16
|
|
Construction Noise
|
Leq (30min) Daytime
|
14
|
|
Leq (15min) Evening
|
12
|
|
Water Quality
|
Marine Water
Sampling(Note 1)
|
40
|
|
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 monitoring days
Breach of Action and Limit (A/L)
Levels
ES05
No air
quality monitoring exceedance was recorded in this Reporting Period. No daytime
construction noise monitoring exceedance was recorded while twelve (12) evening
additional construction noise monitoring exceedances were recorded in this
Reporting Period. For water quality monitoring, one (1) Action Level and two
(2) Limit Level exceedances were recorded for Suspended Solids in the reporting
period. NOEs were issued to notify EPD, AFCD, WSD, IEC, the Contractor and the
Project Consultant. The statistics of environmental exceedance, NOE issued 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
|
--
|
--
|
|
Leq15min Evening
|
0
|
12
|
Not project related
|
NA
|
|
Water Quality (Marine
Water)
|
DO
|
0
|
0
|
--
|
--
|
|
Turbidity
|
0
|
0
|
Not project related
|
NA
|
|
SS
|
1
|
2
|
Note: NOE
– Notification of Exceedance
ES06
For
evening construction noise monitoring and marine quality monitoring exceedance
recorded in the reporting period, investigations were conducted and it is
concluded that the exceedances were unlikely caused by the Project. Nevertheless, the Contractor was
reminded to strictly follow the requirement
stipulated in the applied CNP during evening works and check the implementation of silt curtain regularly to
ensure no seepage of muddy water into the marine water body.
Environmental
Complaint
ES07
One (1) environmental complaint was 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 2019 – 31 May 2019
|
1
|
1
|
1
|
Marine Water
|
Not Project Related
|
|
2
|
0
|
0
|
NA
|
NA
|
Notification of Summons and Successful Prosecutions
ES08
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 2019 – 31 May 2019
|
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 2019 – 31 May 2019
|
1
|
0
|
0
|
NA
|
NA
|
|
2
|
0
|
0
|
NA
|
NA
|
Site Inspection by
External Parties
ES09
No
site inspection was undertaken b AFCD within the Reporting Period. EPD site
inspection was undertaken on 20 March 2019, 25 & 29 April 2019, and 3, 8
& 9 May 2019.
Table of Contents
1. Introduction 3
1.1 Project
Background 3
1.2 Report
Structure 3
2. Project Organization
and Construction progress and Submission 4
2.1 Project
Organization 4
2.2 Construction
Progress 4
2.3 Summary of Environmental Submissions 4
3. Summary of
Environmental Monitoring Programmes and Requirements 5
3.1 General 5
3.2 Monitoring
Parameters 5
3.3 Monitoring
Locations 5
3.4 Monitoring
Frequency and Period 6
3.5 Determination
of Action/Limit (A/L) Levels 7
4. Impact Monitoring
Result 9
4.1 Results
of Air Quality Monitoring in the Reporting Month 9
4.2 Results
of Construction Noise Monitoring 9
4.3 Results
of Water quality Monitoring 9
5. Waste Management 12
5.1 General
Waste Management 12
5.2 Records
of Waste Quantities 12
6. Site Inspection 13
6.1 Requirements 13
6.2 Findings
/ Deficiencies During the Reporting Month 13
7. Landfill Gas
Monitoring 14
7.1 General
Requirement 14
7.2 Limit
Levels and Event and Action Plan 14
7.3 Landfill
Gas Monitoring 14
8. Environmental
Complaint and Non-Compliance 15
8.1 Environmental
Complaint, Summons and Prosecution 15
9. Implementation Status
of Mitigation Measures 16
9.1 General
Requirements 16
10. Conclusions and Recommendations 17
10.1 Conclusions 17
10.2 Recommendations 17
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 Interim
alternative location for air quality and noise monitoring
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 Construction Noise Impact Monitoring results
Table 4-3 Result
Summary of Depth Average (Surface & Middle Layer) of DO (mg/L)
Table 4-4 Result
Summary of Bottom Depth of DO (mg/L)
Table 4-5 Result
Summary of Depth Average of Turbidity (NTU)
Table 4-6 Result
Summary of Depth Average of Suspended Solid (mg/L)
Table 4-7 Summary
of Water Quality Exceedance
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 2nd
Quarterly EM&A report presenting the monitoring results and inspection
findings for the reporting period from 1st March 2019 to 31st
May 2019 (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 Pre-drilling works at Portion II
Ÿ Piling works at Portion II
Ÿ Concrete Work at Portion V & Portion II
Ÿ Structure Steelwork at Portion V
Ÿ Metal work at Works Area A
Contract 2 (Contract
No. NE/2017/08)
2.2.3
The major construction activities of Contract 2 undertaken in this
Reporting Period are:-
Ÿ UU
Detection Work at Portion III and VI
Ÿ Trial
Pit and Pre-drill Work at Portion VI
Ÿ Bored
Pile Work at Portion IV & VI
Ÿ Sheet
Pile Work at Portion VI
Ÿ Excavation
Work at Portion VI
Ÿ Wheel
Washing Facilities Construction at Portion VI
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)
|
Under
Construction
|
|
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)
|
Under
Construction
|
|
CNMS-2
|
Lohas Park Stage 1 (Planned Development in Area 86,
Package 6) (Southeast facade)
|
Under
Construction
|
|
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 agreed alternative monitoring location for impact air quality and noise monitoring are
summarized in Table 3-4 and illustrated in Appendix D.
Table 3-4 Interim alternative location
for air quality and noise monitoring
|
Location ID
|
Monitoring Parameter
|
Location
|
|
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-5
|
Noise (Leq,
L10 & L90)
|
Podium of Lohas Park Phase 2A (Le Prestige)
|
Remark: 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
3.3.4
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
|
|
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
|
|
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-5
|
When
one or more documented complaints are received
|
75 dB(A)
|
|
Remarks:
1.
Construction noise monitoring
will be resumed at the designated locations CNMS-1, CNMS-2, CNMS-3 and CNMS4
once they are available and permission are granted;
2.
The designated locations
CNMS-1, CNMS-2 and CNMS-3 are located at residential building which are 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
During the Reporting Period, 48 sessions of 1-hour TSP and 16 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
|
|
AMS-4
|
42
|
116
|
68
|
|
|
Record Date
|
8-Mar-19
|
23-Apr-19
|
48 events
|
|
AMS-5
|
|
86
|
178
|
139
|
|
Record Date
|
29-May-19
|
8-Apr-19
|
16 events
|
4.1.2
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.
4.1.3
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 and 12 sessions of evening
construction noise monitoring were performed at the interim alternative location
CNMS-5 in the reporting period. The
noise monitoring results at interim alternative location CNMS-5 is summarized
in Table
4-2 and Table 4-3. 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-5
|
61.8
|
66.9
|
64.0
|
|
Record Date
|
26-Mar-19
|
3-May-19
|
13
events
|
4.2.2
4.2.3
All the measured daytime construction noise results were below 75dB(A) of the
acceptance criteria. Furthermore, no
complaint on construction noise was registered,
indicating no exceedance of Action Level. No non-compliance was therefore found
during the Reporting Period.
Table 4-3 Summary
of Evening Construction Noise Impact Monitoring Results
|
Monitoring Location
|
Leq, 15min (dB((A))
|
|
Min
|
Max
|
Average
|
|
CNMS-5
|
59.0
|
62.8
|
61.3
|
|
Record Date
|
15-Mar-19
|
26-Apr-19
|
13
events
|
4.2.4
A total
of twelve (12) limit level evening noise monitoring exceedances were recorded
in the reporting period due to the measured results were higher than 55dB(a) of
the acceptance criteria. Investigations were undertaken by ET accordingly and
it was considered the exceedances recorded were unlikely due to the Project.
4.3.1
In this Reporting Period, a total of 40 sampling days were
performed for marine water monitoring at the nine designated locations. Monitoring
results of 3 key parameters: dissolved oxygen (DO), turbidity and suspended
solids are summarized in Tables 4-4 to 4-7 and the graphical
plots are shown in Appendix E.
Table 4-4 Results
Summary of Depth Average (Surface & Middle Layer) of DO (mg/L)
|
Tidal
|
CC1
|
CC2
|
CC3
|
CC4
|
CC13
|
SWI1
|
C3
|
C4
|
I1
|
|
Mid-Ebb
|
Average
|
6.7
|
6.7
|
6.6
|
6.6
|
6.6
|
6.6
|
6.6
|
6.6
|
6.6
|
|
Min
|
6.1
|
6.2
|
6.0
|
6.2
|
6.1
|
6.2
|
6.2
|
6.2
|
6.0
|
|
Max
|
7.8
|
7.8
|
7.7
|
7.8
|
7.6
|
7.7
|
7.7
|
7.9
|
7.8
|
|
Mid-Flood
|
Average
|
6.6
|
6.6
|
6.6
|
6.6
|
6.6
|
6.5
|
6.6
|
6.6
|
6.6
|
|
Min
|
6.1
|
6.1
|
5.9
|
6.0
|
6.0
|
6.0
|
6.2
|
5.8
|
6.0
|
|
Max
|
7.7
|
7.8
|
7.7
|
7.8
|
7.8
|
7.8
|
7.8
|
7.8
|
7.7
|
Table 4-5 Results
Summary of Bottom Depth of DO (mg/L)
|
Tidal
|
CC1
|
CC2
|
CC3
|
CC4
|
CC13
|
SWI1
|
C3
|
C4
|
I1
|
|
Mid-Ebb
|
Average
|
6.5
|
6.4
|
6.4
|
NA
|
6.5
|
6.5
|
6.5
|
6.5
|
6.4
|
|
Min
|
5.9
|
5.7
|
5.9
|
NA
|
6.1
|
5.9
|
5.8
|
5.9
|
6.0
|
|
Max
|
7.7
|
7.7
|
7.8
|
NA
|
7.7
|
7.8
|
7.7
|
7.9
|
7.7
|
|
Mid-Flood
|
Average
|
6.5
|
6.4
|
6.4
|
NA
|
6.5
|
6.5
|
6.5
|
6.5
|
6.4
|
|
Min
|
6.0
|
5.4
|
5.6
|
NA
|
5.9
|
5.8
|
5.6
|
5.7
|
5.5
|
|
Max
|
7.6
|
7.6
|
7.7
|
NA
|
7.7
|
7.8
|
7.8
|
7.7
|
7.7
|
Remark:
No Dissolved Oxygen (Bottom) monitoring data available for CC4 due to the water
depth measured at CC4 during the monitoring days were less than 3 meters.
Table 4-6 Results
Summary of Depth
Average of Turbidity (NTU)
|
Tidal
|
CC1
|
CC2
|
CC3
|
CC4
|
CC13
|
SWI1
|
C3
|
C4
|
I1
|
|
Mid-Ebb
|
Average
|
1.0
|
1.2
|
1.3
|
1.3
|
1.2
|
1.0
|
1.3
|
1.2
|
1.4
|
|
Min
|
0.4
|
0.3
|
0.4
|
0.2
|
0.4
|
0.2
|
0.3
|
0.4
|
0.5
|
|
Max
|
1.9
|
2.5
|
3.9
|
4.7
|
2.5
|
2.3
|
3.0
|
2.5
|
3.8
|
|
Mid-Flood
|
Average
|
1.1
|
1.2
|
1.2
|
1.3
|
1.1
|
1.1
|
1.3
|
1.3
|
1.2
|
|
Min
|
0.4
|
0.3
|
0.3
|
0.2
|
0.4
|
0.1
|
0.4
|
0.3
|
0.4
|
|
Max
|
2.5
|
2.3
|
2.2
|
4.8
|
2.7
|
3.8
|
2.6
|
3.0
|
2.0
|
Table 4-7 Results
Summary of Depth
Average of Suspended Solids (mg/L)
|
Tidal
|
CC1
|
CC2
|
CC3
|
CC4
|
CC13
|
SWI1
|
C3
|
C4
|
I1
|
|
Mid-Ebb
|
Average
|
2.6
|
2.5
|
2.8
|
2.9
|
2.8
|
2.6
|
2.8
|
2.4
|
2.6
|
|
Min
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
|
Max
|
7.1
|
6.3
|
6.1
|
8.3
|
8.3
|
5.9
|
9.9
|
5.5
|
6.2
|
|
Mid-Flood
|
Average
|
2.7
|
2.5
|
2.7
|
2.8
|
3.0
|
3.1
|
2.9
|
2.9
|
2.9
|
|
Min
|
1.1
|
1.0
|
1.0
|
1.0
|
1.0
|
1.1
|
1.0
|
1.0
|
1.0
|
|
Max
|
7.1
|
7.4
|
13.8
|
6.5
|
9.8
|
14.6
|
7.6
|
9.1
|
11.1
|
4.3.2
A summary
of exceedances for the four parameters: dissolved oxygen (DO), turbidity and
suspended solids (SS) are shown in Table 4-8.
Table 4-8 Summary
of Water Quality Exceedance
|
Station
|
DO
(Ave of Top & mid-depth)
|
DO
(Bottom Depth)
|
Turbidity
(Depth Ave)
|
SS
(Depth Ave)
|
Total Exceedance for the Station
|
|
AL
|
LL
|
AL
|
LL
|
AL
|
LL
|
AL
|
LL
|
AL
|
LL
|
|
CC1
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
CC2
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
CC3
|
0
|
0
|
|
