Tung Chung
New Town Extension (TCNTE) is one of the major initiatives under the
Government's multi-pronged approach to increase land supply to meet Hong Kong's
medium- to long-term needs for housing, economic and social developments. The
Environmental Impact Assessment (EIA) Report for TCNTE (Register No.
AEIAR-196/2016) was approved on 8 April 2016 and the Environmental Permit (EP)
No. EP-519/2016, covering the construction and operation of TCNTE, was granted
on 9 August 2016. The EIA Report and EP cover both Tung Chung East (TCE) and Tung
Chung West (TCW). ERM-Hong Kong, Limited (ERM) is commissioned to
undertake the role of Environmental Team (ET) for the construction and
operation of TCE Project (¡§the Project¡¨) in accordance with the requirements specified in
the EP, Updated Environmental Monitoring and Audit (EM&A) Manual, EIA
Report of the TCNTE project and other relevant statutory requirements. The
construction of the Project commenced on 9 July 2018.
This is the Monthly EM&A report
presenting the EM&A works carried out during the period from 1 to 30
September 2018 for the Project in accordance with the Updated EM&A
Manual. As informed by the Contractor, major activities in the reporting
period are summarised in Table 1 below, together with the key issues and
the key mitigation measures:
Table 1 Major
Activities in the Reporting Period
|
Activities
|
Key Issues
|
Key Mitigation Measures
|
|
Land-based Works
|
|
|
|
¡P
Demolition
of site office near Century Link and Man Tung Road
¡P
Removal
of rock armour above +2.5mPD
¡P
Preparation
works for diversion of existing box culvert
|
¡P
Dust
emission
¡P
Waste
management for C&D Materials
¡P
Noise
from barge and plant operation during normal working hours and restricted
hours
|
¡P
Good
site practices
¡P
Regular
water spraying on stockpiles
¡P
Sorting
and reuse of C&D materials as far as practicable
|
|
|
|
|
|
Marine-based Works
|
|
|
|
¡P
Installation
of pipe piles and sheet piles for ground investigation and wave protection
measures
¡P
Removal
of rock armour below +2.5mPD
¡P
Marine
ground investigation works
¡P
Laying
of geotextile and sand blanket for reclamation works and Deep Cement Mixing
(DCM) trial embankment
¡P
Marine
filling works
¡P
Diversion
of existing box culvert
|
¡P
Elevation
in SS due to sediment loss from sand blanket laying and marine filling works
¡P
Disturbance
to Chinese White Dolphin
|
¡P
Provision
of perimeter silt curtain for the Project
¡P
Implementation
of Dolphin Watching for the marine-based works
¡P
Provision
of a leading seawall of at least 200m before marine filling works
|
A summary of monitoring and audit
activities conducted in the reporting period is listed below:
Air Quality Monitoring 6
sessions
Noise Monitoring 6
sessions
Water Quality Monitoring 13
sessions
Soft Shore Ecological
Monitoring 1
session
Environmental Site Inspection 4
sessions
Environmental Management Meeting 1
session
Environmental auditing works, including
weekly site inspections of construction works conducted by the ET, audit of
works vessels and audit of implementation of Dolphin Watching Plan were
conducted in the reporting period. Based on the audit results and the
observation for the reporting period, environmental pollution control and
mitigation measures for the Project were properly implemented.
Snapshots
of EM&A Activities in the Reporting Period
|
|
|
|
Soft Shore Ecological Monitoring conducted by ET
|
Inspection of Silt Curtain after Adverse Weather
|
|
|
|
|
Water Quality Monitoring conducted by ET
|
Noise Monitoring conducted by ET
|
Breaches of Action and Limit Levels for
Air Quality
No exceedance of Action and Limit Levels
was recorded for construction air quality monitoring in the reporting period.
Breaches of Action and Limit Levels for
Noise
No exceedance of Limit Levels was
recorded for construction noise monitoring in the reporting period.
However, Action Level was triggered from one (1) environmental complaint
related to noise nuisance received on 11 September 2018 during the reporting
period. Investigation was conducted for this noise nuisance in accordance
with the Event and Action Plan and the complaint handling process as stated in
the Complaint Management Plan. Based on the noise monitoring events
conducted in the reporting period, there was no exceedance of limit
levels. Nevertheless, the Contractor was reminded to reduce construction
noise levels, as far as practicable, especially when working next to the
residential areas around the Project.
Breaches of Action and Limit Levels for
Water Quality
The water quality monitoring results
obtained during the reporting period generally complied with the corresponding
Action and Limit Levels stipulated in the Baseline Monitoring Report.
Relevant investigation and follow-up actions were conducted according to the
EM&A programme when the water quality in terms of Dissolved Oxygen (DO),
Turbidity and Suspended Solids (SS) exceeded the corresponding Action and Limit
Levels. The preliminary investigation findings suggested that the
exceedances were not related to the Project.
Soft Shore Ecological Monitoring
The impact monitoring conducted during
the reporting period showed that there was no evidence showing significant
change in intertidal communities when compared against the data obtained during
baseline monitoring. The ET will continue to observe the change in
density or the distribution pattern of horseshoe crab, seagrass and intertidal soft shore
communities taking into account natural fluctuation in the occurrence and
distribution pattern such as due to seasonal change.
Environmental Complaints, Non-compliance
& Summons
There was no notification of summons or
prosecution recorded in the reporting period.
Three (3) environmental complaints were
received in the reporting period. Investigations were conducted for each
of the environmental complaints in accordance with the complaint handling
process as stated in the Complaint Management Plan. Environmental
complaints in the reporting period are summarized in Table 2.
Table 2 Summary of
Environmental Complaints
|
|
Complaint(s)
|
Investigation/Follow up action(s)
|
|
1
|
One
environmental complaint related to noise nuisances at works area near Ying
Tung Estate on 11 September 2018.
|
Based
on the information provided by the ER and the Contractor, supplemented the
regular/ad-hoc noise monitoring conducted around the Project area, there was
no exceedance of noise limit levels and non-compliance was not
observed. Nevertheless, the Contractor was reminded to reduce
construction noise levels, as far as practicable, especially when working
next to the residential areas around the Project. No construction works
in the evenings / restricted hours would be allowed without a valid
Construction Noise Permit. The ET will continue to check the
implementation status of the mitigation measures and conduct noise monitoring
as per EM&A requirements.
|
|
2
|
Two
environmental complaints related to waste management for the demolition of
site offices near
Century Link and Man Tung Road
were received on 12 and 26 September 2018.
|
Based
on the information provided by the ER and the Contractor, supplemented the
regular/ad-hoc site inspections conducted around the Project area, it was
observed that the Contractor had fulfilled the requirements as stated in the
Waste Management Plan to maintain temporary stockpiles and implemented
trip-ticket system to ensure Construction and
Demolition (C&D) materials were disposed properly. The
Contractor also followed the waste management hierarchy as stated in the
Waste Management Plan in handling the waste generated from the site clearance
work for the site offices. Relevant waste materials from the site
offices were reused, recovered and recycled where applicable.
Nevertheless, the Contractor was reminded to implement all relevant
mitigation measures of waste management implications and follow the requirements
as stated in the approved Waste Management Plan. The ET will continue
to check the construction works and the implementation status of the
mitigation measures.
|
Reporting Change
There was no
reporting change in the reporting period.
Upcoming Works for the Next Reporting
Period
Works to be undertaken in the next
monitoring period of October 2018 are summarized in Table 3 below,
together with the key issues and the key mitigation measures:
Table 3 Major
Activities for the Next Reporting Period
|
Activities
|
Key Issues
|
Key Mitigation Measures
|
|
Land-based
Works
|
|
|
|
¡P
Erection
of chain link fence at Area 58
¡P
Removal
of rock armour above +2.5mPD
¡P
Preparation
works for diversion of existing box culvert
|
¡P
Dust
emission
¡P
Waste
management for C&D Materials
¡P
Noise
from barge and plant operation during normal working hours and restricted
hours
|
¡P
Good
site practices
¡P
Regular
water spraying on stockpiles
¡P
Sorting
and reuse of C&D materials as far as practicable
|
|
|
|
|
|
Marine-based
Works
|
|
|
|
¡P
Installation
of pipe piles and sheet piles for ground investigation and wave protection
measures
¡P
Removal
of rock armour below +2.5mPD
¡P
Installation
of silt curtain near Tai Ho Wan
¡P
Laying
of geotextile and sand blanket and ground improvement works for reclamation
works and Deep Cement Mixing (DCM) trial embankment
¡P
Marine
filling works
¡P
Diversion
of existing box culvert
¡P
Marine
ground investigation works
|
¡P
Elevation
in SS due to sediment loss from sand blanket laying and marine filling works
¡P
Disturbance
to Chinese White Dolphin
|
¡P
Provision
of perimeter silt curtain for the Project
¡P
Implementation
of Dolphin Watching for the marine-based works
¡P
Provision
of a leading seawall of at least 200m before marine filling works
|
The ET will keep track on the
construction works to confirm compliance of environmental requirements and the
proper implementation of all necessary mitigation measures. The ET will
also recommend to the Contractor about the environmental toolbox topics on the
abovementioned key issues for the next reporting period.
1
Introduction
Tung Chung
New Town Extension (TCNTE) is one of the major initiatives under the
Government's multi-pronged approach to increase land supply to meet Hong Kong's
medium- to long-term needs for housing, economic and social developments. The
Environmental Impact Assessment (EIA) Report for TCNTE (Register No.
AEIAR-196/2016) was approved on 8 April 2016 and the Environmental Permit (EP)
No. EP-519/2016, covering the construction and operation of TCNTE, was granted
on 9 August 2016. The EIA Report and EP cover both Tung Chung East (TCE) and
Tung Chung West (TCW).
ERM-Hong
Kong, Limited (ERM) is commissioned to undertake the role of Environmental Team
(ET) for the construction and operation of TCE Project (¡§the Project¡¨) in
accordance with the requirements specified in the EP, Updated Environmental
Monitoring and Audit (EM&A) Manual (), EIA Report of
the TCNTE project () and other
relevant statutory requirements.
The TCE Project (¡§the
Project¡¨) comprises the following elements:
1. Reclamation of the seabed by
a non-dredged method at TCE to form a total of about 130 hectares of land;
2. Construction of about 4.9
kilometres of seawalls, with an eco-shoreline, three drainage box culvert
outfalls, three circulation drains and a seawater intake at TCE;
3. Construction of a 470-metre
(m) long multi-cell drainage box culvert at TCE;
4. Provision of infrastructure
for Tung Chung Area 58, including construction of a single two-lane road with a
footpath of about 270 m in length and the associated utility works;
5. Construction of roads,
footbridges, drainage, sewerage, waterworks, sewage and salt water pumping
stations, fresh water and salt water service reservoirs, and flood protection
measures;
6. Provision of new cycle tracks
connecting to the existing cycle track network;
7. Landscaping, reprovisioning
and ancillary works; and
8. Implementation of environmental
mitigation measures and environmental monitoring and audit works.
The location
of the Project, including the associated infrastructure works, is shown in Figure 1.1. The
construction and the reclamation related marine works of the Project commenced
on 9 and 13 July 2018, respectively.
This is the Monthly EM&A Report for
the Project which summarises the key findings of the EM&A programme during
the reporting period from 1 to 30 September 2018 for the construction
works.
The organization structure of the
Project is shown in Annex A.
The key personnel contact names and contact details are summarized in Table
1.1 below.
Table 1.1 Contact
Information of Key Personnel
|
Party
|
Position
|
Name
|
Telephone
|
|
Civil
Engineering and Development Department
|
Senior
Engineer
|
Eddie
Lam
|
2231
4445
|
|
Engineer
|
Colin
Wong
|
2231
4417
|
|
Engineer¡¦s
Representative
(ER)
(AECOM
Asia Company Limited)
|
Principal
Resident Engineer
|
Frankie
Fan
|
9325
0903
|
|
Senior
Resident Engineer
|
Robo
Lo
|
6622
1130
|
|
Resident
Engineer
|
Vincent
Leung
|
9800
0448
|
|
Senior
Inspector of Works
|
C
K Liu
|
9433
6255
|
|
Environmental
Team (ET) (ERM-Hong Kong, Limited)
|
ET
Leader
|
Jovy
Tam
|
2271
3113
|
|
Deputy
ET Leader
|
Raymond
Chow
|
2271
3114
|
|
Independent Environmental Checker (IEC)
(Black & Veatch Hong Kong Limited)
|
IEC
|
Manuel
Chua
|
2608 7314
|
|
Deputy
IEC
|
Ivan
Ting
|
9222 9490
|
|
Contractor
(Contract No. NL/2017/03 TCNTE ¡V Reclamation and Advance Works)
(Build
King ¡V SCT Joint Venture)
|
Site
Agent
|
Keith
Tse
|
9383
6173
|
|
Construction
Team Leader
|
Lee
Wai Man
|
9481
6024
|
|
Environmental
Officer
|
Calvin
Sze
|
9205
9277
|
|
24-hour
Complaint Hotline
|
-
|
9862
2910
|
As informed by the Contractor, details
of the major works carried out in this reporting period are listed below:
Land-based Works:
Ÿ
Demolition
of site office near Century Link and Man Tung Road;
Ÿ
Removal
of rock armour above +2.5mPD; and
Ÿ
Preparation
works for diversion of existing box culvert.
Marine-based Works:
Ÿ
Installation
of pipe piles and sheet piles for ground investigation and wave protection
measures;
Ÿ
Removal
of rock armour below +2.5mPD;
Ÿ
Marine
ground investigation works;
Ÿ
Laying
of geotextile and sand blanket for reclamation works and Deep Cement Mixing
(DCM) trial embankment;
Ÿ
Marine
filling works; and
Ÿ
Diversion
of existing box culvert.
The
environmental mitigation implementation schedule is presented in Annex B.
The status for all environmental aspects
are presented in Table 1.2. The EM&A requirements remained
unchanged during the reporting period.
Table 1.2 Summary
of Status for the Environmental Aspects under the Updated EM&A Manual
|
Parameters
|
Status
|
|
Air
Quality
|
|
Baseline
Monitoring
|
The
results of baseline air quality monitoring for TCE were reported in Baseline
Monitoring Report and submitted to EPD under EP Condition 3.4
|
|
Impact
Monitoring
|
On-going
for TCE, monitoring conducted three times every six days
|
|
|
|
|
Noise
|
|
Baseline
Monitoring
|
The
results of baseline noise monitoring for TCE were reported in Baseline
Monitoring Report and submitted to EPD under EP Condition 3.4
|
|
Impact
Monitoring
|
On-going
for TCE, monitoring conducted once per week
|
|
Impact
Monitoring for Road Traffic Noise during Operational Phase
|
To
be conducted during operational phase
|
|
Fixed
Noise Commissioning Test
|
To
be implemented by the Contractor
|
|
|
|
|
Water
Quality
|
|
Baseline
Monitoring
|
The
results of baseline water quality monitoring for TCE were reported in
Baseline Monitoring Report and submitted to EPD under EP Condition 3.4
|
|
Impact
Monitoring
|
On-going
for TCE, monitoring conducted three times per week
|
|
|
|
|
Waste
Management
|
|
Waste
Monitoring
|
On-going
|
|
|
|
|
Land
Contamination
|
|
Contamination
Assessment Plan (CAP), Remediation Action Plan (RAP) and Remediation Report
(RR)
|
Pending
environmental site investigation and lab testing works for TCW
|
|
|
|
|
Ecology
|
|
Monitoring
for Compensation Woodland
|
To
be conducted when compensation woodland are planted
|
|
Monitoring
for Emergent Plant inside the future River Park
|
To
be conducted in the future River Park
|
|
Monitoring
for Translocated Amphibians of Conservation Importance
|
To
be conducted after translocation
|
|
Monitoring
for Preserved/Transplanted Plant Species of Conservation Importance
|
To
be conducted after preservation/ transplantation
|
|
Monitoring
for Tung Chung Stream EIS and Wong Lung Hang EIS
|
To
be conducted under TCW
|
|
Eco-shoreline
Monitoring
|
To
be conducted when eco-shoreline at TCE PDA and Road P1 is built
|
|
Tung
Chung Bay and Tai Ho Wan Baseline Monitoring
|
The
results of baseline soft shore ecological monitoring at Tung Chung Bay and
Tai Ho Wan were reported in Baseline Monitoring Report and submitted to EPD
under EP Condition 3.4
|
|
Tung
Chung Bay and Tai Ho Wan Impact Monitoring
|
On-going
for TCE, monitoring conducted quarterly
|
|
|
|
|
Landscape
and Visual
|
|
|
Baseline
Monitoring
|
The
results of baseline landscape and visual monitoring were reported in Baseline
Monitoring Report and submitted to EPD under EP Condition 3.4
|
|
|
|
|
Site
Environmental Audit
|
|
Regular
Site Inspection
|
On-going
|
|
Dolphin
Watching Plan implementation measures
|
Under
implementation by the Contractor
|
|
Works
Vessel Travel Route Plan implementation measures
|
Under
implementation by the Contractor
|
|
Silt
Curtain Deployment Plan implementation measures
|
Under
implementation by the Contractor
|
|
|
|
|
Spill
Response Plan implementation measures
|
Under
implementation by the Contractor
|
|
|
|
|
Waste
Management Plan implementation measures
|
Under
implementation by the Contractor
|
|
|
|
|
Complaint
Hotline and Email Channel
|
Under
implementation by the Contractor
|
|
Environmental
Log Book
|
On-going
|
Taking into account the construction
works, impact monitoring of air quality, noise, water quality and waste
management were carried out in the reporting period. The monitoring
schedule of air quality, noise, water quality monitoring and soft shore ecological
monitoring are provided in Annex
D2, Annex E2, Annex F2 and Annex G1, respectively.
The EM&A programme also involved
environmental site inspections and related auditing conducted by the ET for
checking the implementation of the required environmental mitigation measures
recommended in the approved EIA Report and relevant EP submissions, including
Dolphin Watching Plan, Works Vessel Travel Route Plan, Silt Curtain Deployment
Plan, Spill Response Plan and Waste Management Plan. To promote the
environmental awareness and enhance the environmental performance of the contractors,
environmental trainings and regular environmental management meetings were
conducted during the reporting period, which are summarized as below:
Ÿ
One
(1) environmental management meeting was held with the Contractor, ER, ET, IEC
and CEDD on 26 September 2018; and
Ÿ
Environmental
toolbox trainings on noise control measure, dust control measure and handling
of chemicals provided by the Contractor for the workers on 5, 12 and 19
September 2018.
The status of statutory environmental
compliance with the EP conditions under the EIAO, submission status under the
EP and implementation status of mitigation measures are presented in Table 1.3.
Table 1.3 Status
of Submissions and Implementation Status of Mitigation Measures under EP
|
EP Condition
|
Submission / Implementation Status
|
Status
|
|
2.1
|
Set
up of Community and Professional Liaison Groups
|
Community
and Professional Liaison Groups were set up.
|
|
2.1
|
Complaint
Management Plan
|
Accepted
by EPD
|
|
2.5
|
Employment
of Qualified Ecologist(s)
|
Qualified
Ecologists have been employed to carry out work relating to ecological
aspects.
|
|
2.6
|
Employment
of Surveillance Team
|
Surveillance
Team has been employed to conduct regular site inspection.
|
|
2.11
|
Management
Organizations
|
Accepted
by EPD
|
|
2.12
|
Construction
Works Schedule and Location Plans
|
Accepted
by EPD
|
|
2.13
|
Works
Vessel Travel Route Plan
|
Accepted
by EPD
|
|
2.14
|
Eco-shoreline
Implementation Plan
|
To
be prepared no later than 3 months before the
commencement of construction of the eco-shoreline at TCE
|
|
2.15
|
Dolphin
Watching Plan
|
Accepted
by EPD
|
|
2.16
|
Silt
Curtain Deployment Plan
|
Accepted
by EPD
|
|
2.17
|
Spill
Response Plan
|
Accepted
by EPD
|
|
2.18
|
Plan
on Provision of Buffer Zones
|
To
be prepared no later than 3 months before the commencement of construction
works at Tung Chung Valley
|
|
2.19
|
River
Park Plan
|
To
be prepared no later than 3 months before the commencement of construction
works at Tung Chung Valley
|
|
2.20
|
Habitat
Enhancement and Translocation Plan for Amphibian Species of Conservation
Importance
|
To
be prepared no later than 3 months before the commencement of construction
works at Tung Chung Valley
|
|
2.21
|
Detailed
Preservation and/or Translocation Plan for Plant Species of Conservation
Importance
|
To
be prepared no later than 3 months before the commencement of construction
works at Tung Chung Valley
|
|
2.22
|
Detailed
Compensatory Woodland Planting Plan
|
To
be prepared no later than 3 months before the commencement of construction
works at Tung Chung Valley
|
|
2.23
|
Plan
for Review of Use of New Low Noise Road Surfacing Material(s)
|
To
be prepared no later than 3 months before the commencement of roadworks
|
|
2.24
|
Waste
Management Plan
|
Accepted
by EPD
|
|
2.25
|
(i)
no dredging of marine sediment shall be carried out for the Project
(ii)
all reclamation filling works shall be carried out
within a leading seawall of at least 200m; and
(iii) silt curtains surrounding the reclamation area shall
be deployed in accordance with the Silt Curtain Deployment Plan
|
Under
implementation
Under
implementation
Under
implementation
|
|
2.26
|
Implement
Silt Curtain Deployment Plan and Spill Response Plan
|
Under
implementation
|
|
2.27
|
Implement
dolphin exclusion zone of 250m around the reclamation site at Tung Chung East
during the installation of the perimeter silt curtains and any re-deployment
of the perimeter silt curtains by Qualified Ecologist(s)
|
Under
implementation
|
|
2.28
|
Once
the perimeter silt curtains are installed or re-deployed, the Dolphin
Watching Plan shall be implemented as part of the EM&A programme
|
Under
implementation
|
|
2.29
|
(i)
no underwater blasting and percussive piling shall be
carried out for the Project; and
(ii) air compressors and other noisy equipment mounted on
works vessels shall be acoustically-decoupled
|
Under
implementation
Under
implementation
|
|
2.30
|
Implement
Works Vessel Travel Route Plan
Implement
Eco-shoreline Implementation Plan
Implement
Dolphin Watching Plan
|
Under
implementation
To
be implemented
Under
implementation
|
|
2.31
|
Implement
Plan on Provision of Buffer Zones, River Park Plan, Habitat Enhancement and
Translocation Plan for Amphibian Species of Conservation Importance, Detailed
Preservation and/or Translocation Plan for Plant Species of Conservation
Importance and Detailed Compensatory Woodland Planting Plan
|
To
be implemented
|
|
2.32
|
Implement
Plan for review of the use of new road surfacing material(s)
Implement Waste Management Plan
|
To
be implemented
Under
implementation
|
|
2.33
|
Install
noise barriers and low noise road surfacing at the extended Chung Mun Road and Road D3
All
noise mitigation measures implemented shall be properly maintained during the
operation of the above roads
|
To
be implemented
|
|
2.34
|
Implement
a deodouriser with an odour removal efficiency of at least 95% shall be
installed, operated and maintained within each sewage pumping station.
The exhaust of the deodouriser shall be oriented away from sensitive
receivers; and all odourous facilities of each sewage
pumping station shall be enclosed and negative pressure shall be maintained
within the facilities.
|
To
be implemented
|
|
2.35
|
Enclose
all the pumps inside a building structure
|
To
be implemented
|
|
2.36
|
(i) a
100% standby pumping capacity shall be installed and maintained
(ii) a
50% spare pumping capacity shall be installed and maintained
(iii) dual-feed
power supply shall be installed and maintained; and
(iv) an emergency facility with a 6-hour
storage capacity of average dry weather flow shall be installed and
maintained.
|
To
be implemented
To
be implemented
To
be implemented
To
be implemented
|
The environmental licenses and permits,
including environmental permit, waste discharge license, registration as
chemical waste producer and construction noise permit, which are valid in the
reporting period are presented in Annex C. No non-compliance with environmental
statutory requirements was recorded.
2
EM&A
Results for Tung Chung East
The EM&A programme for the Project
required environmental monitoring for air quality, noise, water quality and
marine ecology as well as environmental site inspections for air quality,
noise, water quality, waste management, marine ecology and landscape and visual
impacts. The EM&A requirements and related findings for each
component are summarized in the following sections.
2.1.1
Monitoring
Requirements and Equipment
According to the Updated EM&A Manual ()
of the Project, impact air quality monitoring
in terms
of 1-hour Total Suspended Particulate (TSP) was conducted three (3) times every
six (6) days when the highest dust impact was expected. The Action and
Limit Levels of the air quality monitoring is provided in Table 2.1
below.
Table 2.1 Action
and Limit Levels for 1-hour TSP
|
Location
|
Action Level, µg/m3
|
Limit Level, µg/m3
|
|
Monitoring
station for Tung Chung East
|
279
|
500
|
Portable direct reading dust
meters were used to measure 1-hour TSP levels in undertaking the air quality
monitoring for the Project. The proposed use of portable direct reading
dust meters was submitted to IEC and obtained agreement from the IEC as stated
in Section 5.5 of the Updated EM&A Manual. With the use of direct
reading dust meter, it can allow prompt and direct results for the EM&A
reporting and the implementation of the event and action plan. The
portable direct reading dust meter would be calibrated every year against High Volume Sampler
(HVS) to check
the validity and accuracy of the results measured
by direct reading method.
The monitoring location and
equipment
used in the
impact air
quality monitoring programme are summarized in Table 2.2 and illustrated in Figure 2.1. Copies of the
calibration certificates for the equipment are presented in Annex D1, which showed that
the portable direct reading dust meter is capable of providing comparable
results with that provided by a HVS.
Table 2.2 Air
Quality Monitoring Details
|
Monitoring Station
|
Location
|
Parameter
|
Frequency and Duration
|
Monitoring Dates
|
Equipment
|
|
DM-1
|
Tung
Chung Area 56 ¡V Ying Tung Estate
|
1-hour
TSP
|
Three
times per six days during the construction period of the Project
|
3,
7, 13, 19, 24 & 29 Sep 2018
|
1-hour
TSP Dust Meter
SIBATA
LD-5R (S/N: 620402)
|
|
Remark:
It
should be noted that impact monitoring at other construction dust monitoring
locations at TCE as stated in the Updated EM&A
Manual will commence after the flat intake (for Monitoring Stations DM-2,
DM-3 and DM-4).
|
2.1.2
Monitoring
Schedule for the Reporting Month
The schedule for air quality monitoring
during the reporting period is provided in Annex D2.
2.1.3
Results and
Observations
The monitoring results for 1-hour TSP
are summarized in Table 2.3. The monitoring data and the graphical
presentation are provided in Annex
D3.
Table 2.3 Summary
of 1-hour TSP Monitoring Results in the Reporting Period
|
Monitoring Station
|
Average (µg/m3)
|
Range (µg/m3)
|
Action Level (µg/m3)
|
Limit Level (µg/m3)
|
|
DM-1
|
36
|
22-89
|
279
|
500
|
The major dust sources in the reporting
period included excavation, craning, sand blanket laying and material handling
works under the Project as well as nearby traffic emissions.
All the 1-hour TSP results were below
the Action and Limit Levels at the monitoring location in the reporting
period. No action is thus required to be undertaken in accordance with
the Event and Action Plan presented in Annex D4.
2.2.1
Monitoring
Requirements and Equipment
According to the Updated EM&A Manual ()
of the Project, impact noise monitoring was
conducted once per week during the construction phase of the Project. The
Action and Limit Level for construction noise of the Project is provided in Table
2.4 below.
Table 2.4 Action
and Limit Levels for Construction Noise
|
Time Period
|
Action Level
|
Limit Level
|
|
0700 - 1900 hours on normal weekdays
|
When one documented complaint is received
|
75 dB(A) *
|
Notes:
Limit
level is exceeded when Leq ≥ 75 dB(A). If works are to be carried out
during restricted hours, the conditions stipulated in the construction noise
permit issued by the Noise Control Authority have to be followed.
*
Reduce to 70 dB (A) for schools and 65 dB (A) during school examination
periods.
Noise monitoring was performed using
sound level meter at the designated monitoring stations NMS-CA-1A ()
and NMS-CA-4 (Figure 2.2;
Table 2.5) in accordance with the requirements stipulated in the Updated EM&A Manual. Acoustic calibrator
was deployed to check the sound level meters at a known sound pressure
level. Details of the deployed equipment are provided in Table 2.5.
Copies of the calibration certificates for the equipment are presented in Annex E1.
Table 2.5 Noise
Monitoring Details
|
Monitoring Station (1)
|
Location
|
Parameter
|
Frequency and Duration
|
Monitoring Dates
|
Equipment
|
|
NMS-CA-1A
(2)
|
Residential premise in Tung
Chung East ¡V Century Link
|
30-minute
measurement between 0700 and 1900 on normal weekdays (Monday to Saturday). Leq,
L10 and L90 would be recorded.
|
Once
per week for 30 mins during the construction period of the
Project
|
19,
24 and 29 September 2018
|
Sound
Level Meter: Rion NL-52 (S/N: 00331805)
Acoustic
Calibrator: LARSON DAVIS CAL200 (S/N: 11333)
|
|
NMS-CA-4
|
Residential premise in the
reclamation area next to Tung Chung East ¡V Ying Tung Estate
|
3,
7, 13, 19, 24 and 29 September 2018
|
|
Remarks:
(1) It
should be noted that impact monitoring at other construction noise monitoring
locations at TCE as stated in the Updated EM&A
Manual will commence after the flat intake of
residential premise in TCE (for Monitoring Station NMS-CA-1) and
operation of schools (for Monitoring Stations NMS-CA-2 and NMS-CA-3).
(2) Impact
monitoring at monitoring station NMS-CA-1A commenced on 19 September 2018 in
view of the close vicinity of the construction works near the residential
area at Century Link.
|
2.2.2
Monitoring
Schedule for the Reporting Month
The schedule for noise monitoring during
the reporting period is provided in Annex E2.
2.2.3
Results and
Observations
Results for noise monitoring are
summarized in Table 2.6. The monitoring data and the graphical
presentation are provided in Annex
E3.
Table 2.6 Summary
of Construction Noise Monitoring Results in the Reporting Period
|
Monitoring Station
|
Average , dB(A),
Leq (30mins)
|
Range, dB(A),
Leq (30mins)
|
Limit Level, dB(A),
Leq (30mins)
|
|
NMS-CA-1A
|
71.2
|
68.9-72.1
|
75
|
|
NMS-CA-4
|
65.2
|
62.1-69.1
|
75
|
Major noise sources during the noise
monitoring included noise from crane and breaker operation (for monitoring
station NMS-CA-1A), welding, excavation works, armour rock removal, sheet
piling and grab barge works, nearby traffic noise and aircraft noise and nearby
concurrent project. It should be noted that the temporary crane and
breaker operation was conducted near the monitoring station NMS-CA-1A during
the monitoring events and the monitoring results were observed to be higher
when compared to those recorded for the monitoring station NMS-CA-4. The
ET will keep on checking whether noise mitigation measures are properly
implemented for the works of the Project.
No noise Limit Level exceedance was
recorded in the reporting period. However, Action Level was triggered from one
(1) environmental complaint related to noise nuisance received on 11 September
2018 during the reporting period. Investigation was conducted for the
complaint in accordance with the Event and Action Plan (Annex E4) and the details
are provided in Section 2.9.
2.3
Water Quality Monitoring
2.3.1
Monitoring
Requirements and Equipment
Impact water quality monitoring was
carried out to ensure that any deterioration of water quality was detected, and
that timely action was taken to rectify the situation. Impact water quality
monitoring was undertaken three days per week since the commencement of marine
works during the reporting period in accordance with the Updated EM&A
Manual. Each impact water quality monitoring was scheduled such that the
interval between two impact water quality monitoring was more than 36 hours to
record representative water quality data throughout the week during the marine
works.
Two (2) replicate in-situ
measurements and samples were collected at each monitored water depth of each
designated monitoring stations. Dissolved Oxygen (DO), pH value,
salinity, temperature and turbidity were measured in-situ whereas the
level of suspended solids (SS) were determined by ALS Technichem (HK) Pty
Ltd which is a HOKLAS accredited laboratory.
The Action and Limit Levels of the water
quality monitoring are provided in Table 2.7.
Table 2.7 Action
and Limit Levels for Water Quality
|
Parameters
|
Action Level
|
Limit Level
|
|
DO in mg/L
(Surface, Middle
& Bottom)
|
Surface and
Middle
5.9 mg/L [1]
Bottom
5.6 mg/L
|
Surface and
Middle
4 mg/L [1]
Bottom
2 mg/L
|
|
SS in mg/L (Depth-averaged)
|
13.5 mg/L
or
120% of upstream control station at the same tide of the same day, whichever
is higher. [2]
|
23.5 mg/L
or
130% of upstream control station at the same tide of the same day,
whichever is higher. [2]
|
|
Turbidity in NTU (Depth-averaged)
|
17.1 NTU
or
120% of upstream control station at the same tide of the same day,
whichever is higher. [2]
|
23.5 NTU
or
130% of upstream control station at the same tide of the same day, whichever
is higher. [2]
|
Notes:
(1) For
DO, non-compliance occurs when monitoring results is lower than the limits.
(2) For SS and Turbidity, non-compliance
occurs when monitoring results is larger than the limits
The locations of the
monitoring stations under the Project are shown in Figure 2.3 and Table 2.8.
Table 2.8 Locations
of Impact Water Quality Monitoring Stations and the Corresponding Monitoring
Requirements
|
Monitoring Station
|
Description
|
Coordinates
|
Parameters (1)
|
Frequency
|
Depth
|
|
|
|
Easting
|
Northing
|
|
|
|
TCE-WQM1
|
Near Airport Channel
|
811838
|
817341
|
Ÿ
Dissolved
Oxygen
(DO)
(mg/L and % saturation)
Ÿ
Temperature (¢XC)
Ÿ
Turbidity
(NTU)
Ÿ
Salinity
(ppt)
Ÿ
pH
Ÿ
Water
depth (m)
Ÿ
Suspended
Solid (SS) (mg/L)
|
Impact monitoring: 3 days per week, at mid-flood and
mid-ebb tides during the construction period of the Project
|
3
water depths: 1m
below
sea surface,
mid-depth
and 1m
above
seabed. If the water depth is less than 3m, mid-depth sampling
only. If water depth less than 6m, mid-depth may be omitted
|
|
TCE-WQM2a
|
Marine Park 1
|
814439
|
819879
|
|
TCE-WQM2b
|
Marine Park 2
|
814439
|
821905
|
|
TCE-WQM3A
|
Outlet of Tai Ho Wan
|
814705
|
817859
|
|
TCE-WQM4
|
HKBCF
|
813344
|
818849
|
|
TCE-C1
|
Control Station - Outside
Airport Channel
|
804247
|
815620
|
|
TCE-C2
|
Control Station - Sunny Bay
|
819460
|
821473
|
|
Notes:
(1) In addition to the abovementioned parameters, other relevant data shall
also be recorded, including monitoring location / position, time, water
depth, tidal stages, weather conditions and any special phenomena or work
underway at the construction site.
|
Table 2.9 summarizes the
equipment used in the impact water quality
monitoring works. Copies of the calibration certificates are attached in Annex F1.
Table 2.9 Water
Quality Monitoring Equipment
|
Equipment
|
Model
|
|
Water
Sampler
|
Kahlsico
Water Samplers
|
|
Multi-parameter
Water Quality System
(measurement of DO,
Temperature, Turbidity, Salinity and pH) (Note 1)
|
YSI
ProDSS (S/N: 16H104233;
S/N: 16H104234; S/N: 17E100747; S/N: 17H105557)
YSI
6920 v2 (S/N: 0001C6A7; S/N: 00019CB2)
|
|
Note
1: Two of the multi-parameter water quality systems were used at each
monitoring station during each survey day.
|
2.3.2
Monitoring
Schedule for the Reporting Month
The schedule for water quality
monitoring during the reporting period is provided in Annex F2.
2.3.3
Results and
Observations
A total of 13 monitoring events for
impact water quality monitoring were conducted at all designated monitoring
stations during the reporting period. The monitoring event during mid-ebb
tide on 15 September 2018 was cancelled due to the issue of Strong Wind Signal
No.3 of Typhoon Mangkhut. Impact water quality monitoring results and
graphical presentations are provided in Annex F3.
Action level
and limit level exceedances were recorded for water quality impact monitoring
in the reporting period and the event and action plan (Annex
F4) was
undertaken. Investigations on the action and limit level exceedances were
conducted and summarized in Table 2.10 below.
Table 2.10 Details
of Exceedances Recorded for Water Quality Monitoring
|
Group
|
Date
|
Tide
|
Parameter
|
Station
|
Type
|
Remarks
|
|
1
|
01
Sep 2018
|
ME
|
DO
(S&M)
|
All
stations
|
Action
|
The
exceedances were not considered as caused by the construction of the Project
due to the following reasons:
Ÿ
Areas of
reclamation related marine works undertaken under the Project were surrounded
by silt curtain, which was inspected daily by the Contractor and endorsed by
ER and observed to be in good condition and functioning well, except minor
defect was found for silt curtain on 18, 20 and 22 September 2018 after the
approach of typhoon Mangkhut. The defect was fixed on 23 September 2018
and inspected by the Contractor and endorsed by ER.
Ÿ
DO levels at the
monitoring stations were higher than or similar to those at corresponding control/upstream
stations.
Ÿ
No
marine works were undertaken on 15 and 25 September 2018.
Ÿ
During summer
season, the marine water experienced temperature and salinity stratification,
where layers of water build up with different levels of temperature and salinity
which prevent mixing of water masses, leading to hypoxia (low oxygen levels)
at the sea bottom.
|
|
|
|
ME
|
DO
(B)
|
TCE-WQM1
|
Action
|
|
|
|
ME
|
DO
(B)
|
TCE-WQM2a
|
Action
|
|
|
|
ME
|
DO
(B)
|
TCE-WQM2b
|
Action
|
|
|
|
ME
|
DO
(B)
|
TCE-WQM3A
|
Action
|
|
|
|
MF
|
DO
|
All
stations
|
Action
|
|
|
04
Sep 2018
|
ME
|
DO
|
All
stations
|
Action
|
|
|
|
MF
|
DO
|
All
stations
|
Action
|
|
|
06
Sep 2018
|
ME
|
DO
|
All
stations
|
Action
|
|
|
|
MF
|
DO
(S&M)
|
TCE-WQM2b
|
Action
|
|
|
|
MF
|
DO
(S&M)
|
TCE-WQM4
|
Action
|
|
|
|
MF
|
DO
(B)
|
TCE-WQM1
|
Action
|
|
|
|
MF
|
DO
(B)
|
TCE-WQM2a
|
Action
|
|
|
|
MF
|
DO
(B)
|
TCE-WQM2b
|
Action
|
|
|
08
Sep 2018
|
ME
|
DO
|
TCE-WQM1
|
Action
|
|
|
|
ME
|
DO
|
TCE-WQM2a
|
Action
|
|
|
|
ME
|
DO
|
TCE-WQM2b
|
Action
|
|
|
|
ME
|
DO
(B)
|
TCE-WQM3A
|
Action
|
|
|
|
MF
|
DO
(B)
|
TCE-WQM1
|
Action
|
|
|
|
MF
|
DO
|
TCE-WQM2a
|
Action
|
|
|
|
MF
|
DO
|
TCE-WQM2b
|
Action
|
|
|
|
MF
|
DO
(B)
|
TCE-WQM3A
|
Action
|
|
|
|
MF
|
DO
(S&M)
|
TCE-WQM4
|
Action
|
|
|
11
Sep 2018
|
ME
|
DO
|
All
stations
|
Action
|
|
|
|
MF
|
DO
(S&M)
|
TCE-WQM1
|
Action
|
|
|
|
MF
|
DO
(S&M)
|
TCE-WQM2a
|
Action
|
|
|
|
MF
|
DO
(S&M)
|
TCE-WQM2b
|
Limit
|
|
|
|
MF
|
DO
(S&M)
|
TCE-WQM3A
|
Action
|
|
|
|
MF
|
DO
(S&M)
|
TCE-WQM4
|
Action
|
|
|
|
MF
|
DO
(B)
|
All
stations
|
Action
|
|
|
13
Sep 2018
|
ME
|
DO
|
All
stations
|
Action
|
|
|
|
MF
|
DO
|
All
stations
|
Action
|
|
|
15
Sep 2018
|
MF
|
DO
|
All
stations
|
Action
|
|
|
18
Sep 2018
|
ME
|
DO
(S&M)
|
TCE-WQM3A
|
Action
|
|
|
20
Sep 2018
|
ME
|
DO
|
TCE-WQM1
|
Action
|
|
|
|
ME
|
DO
(B)
|
TCE-WQM2a
|
Action
|
|
|
|
ME
|
DO
(B)
|
TCE-WQM2b
|
Action
|
|
|
|
MF
|
DO
(B)
|
TCE-WQM2b
|
Action
|
|
|
22
Sep 2018
|
ME
|
DO
(B)
|
TCE-WQM1
|
Action
|
|
|
|
ME
|
DO
(B)
|
TCE-WQM2a
|
Action
|
|
|
|
ME
|
DO
(B)
|
TCE-WQM3A
|
Action
|
|
|
|
MF
|
DO
|
TCE-WQM2b
|
Action
|
|
|
|
MF
|
DO
(B)
|
TCE-WQM1
|
Action
|
|
|
|
MF
|
DO
(B)
|
TCE-WQM2a
|
Action
|
|
|
25
Sep 2018
|
ME
|
DO
(B)
|
TCE-WQM1
|
Action
|
|
|
|
ME
|
DO
|
TCE-WQM2b
|
Action
|
|
|
|
ME
|
DO
|
TCE-WQM3A
|
Action
|
|
|
|
MF
|
DO
(B)
|
TCE-WQM1
|
Action
|
|
|
|
MF
|
DO
(B)
|
TCE-WQM2a
|
Action
|
|
|
|
MF
|
DO
|
TCE-WQM2b
|
Action
|
|
|
|
MF
|
DO
|
TCE-WQM3A
|
Action
|
|
|
27
Sep 2018
|
ME
|
DO
|
All
stations
|
Action
|
|
|
|
MF
|
DO
|
All
stations
|
Action
|
|
|
29
Sep 2018
|
ME
|
DO
(S&M)
|
TCE-WQM1
|
Action
|
|
|
|
ME
|
DO
|
TCE-WQM2a
|
Action
|
|
|
|
ME
|
DO
|
TCE-WQM2b
|
Action
|
|
|
|
ME
|
DO
|
TCE-WQM4
|
Action
|
|
|
|
MF
|
DO
|
TCE-WQM1
|
Action
|
|
|
|
MF
|
DO
|
TCE-WQM2a
|
Action
|
|
|
|
MF
|
DO
|
TCE-WQM2b
|
Action
|
|
|
|
MF
|
DO
(S&M)
|
TCE-WQM3A
|
Action
|
|
|
|
MF
|
DO
|
TCE-WQM4
|
Action
|
|
|
|
|
|
|
|
|
|
2
|
01
Sep 2018
|
ME
|
SS
|
TCE-WQM1
|
Action
|
The
exceedances were not considered as caused by the construction of the Project
due to the following reasons:
Ÿ
Areas of
reclamation related marine works undertaken under the Project were surrounded
by silt curtain, which was inspected daily by the Contractor and endorsed by
ER and observed to be in good condition and functioning well.
Ÿ
Monitoring
stations are located nearby the shore. In view of the rainy weather,
surface runoff from the nearby land mass to the sea might be resulted, thus
increasing the levels of Suspended Solids of the water.
|
|
|
|
ME
|
SS
|
TCE-WQM3A
|
Action
|
|
|
|
|
|
|
|
|
|
3
|
08
Sep 2018
|
ME
|
SS
|
TCE-WQM2b
|
Action
|
The
exceedances were not considered as caused by the construction of the Project
due to the following reasons:
Ÿ
Areas of
reclamation related marine works undertaken under the Project were surrounded
by silt curtain, which was inspected daily by the Contractor and endorsed by
ER and observed to be in good condition and functioning well.
Ÿ
The monitoring
stations are located further away from the Project works area when compared
with monitoring stations TCE-WQM3A and TCE-WQM4 where exceedances were not
recorded.
|
|
|
|
MF
|
SS
|
TCE-WQM2b
|
Action
|
|
|
11
Sep 2018
|
ME
|
SS
|
TCE-WQM1
|
Action
|
|
|
|
MF
|
SS
|
TCE-WQM2b
|
Action
|
|
|
13
Sep 2018
|
ME
|
SS
|
TCE-WQM2a
|
Action
|
|
|
|
MF
|
SS
|
TCE-WQM2a
|
Action
|
|
|
|
MF
|
SS
|
TCE-WQM2b
|
Limit
|
|
|
29
Sep 2018
|
ME
|
SS
|
TCE-WQM1
|
Action
|
|
|
|
MF
|
SS
|
TCE-WQM2a
|
Action
|
|
|
|
|
|
|
|
|
|
4
|
27
Sep 2018
|
MF
|
SS
|
TCE-WQM3A
|
Action
|
The
exceedances were not considered as caused by the construction of the Project
due to the following reasons:
Ÿ
Areas of
reclamation related marine works undertaken under the Project were surrounded
by silt curtain, which was inspected daily by the Contractor and endorsed by
ER and observed to be in good condition and functioning well.
Ÿ Site observations confirmed no silt
plumes or observable issues during marine works on 27 September 2018,
including installation of pipe pile and sheet pile, sand filling and
geotextile laying.
|
|
|
|
MF
|
Turbidity
|
TCE-WQM3A
|
Action
|
|
ME:
Mid-ebb; MF: Mid-flood
DO(B):
Bottom-depth DO; DO (S&M): Surface and middle-depth averaged DO
All
Stations: TCE-WQM1, TCE-WQM2a, TCE-WQM2b, TCE-WQM3A and TCE-WQM4
|
Based on the preliminary investigation
conducted for each of the monitoring day with potential action and limit level
exceedances with the Contractor, the ER and the IEC, there is no evidence
showing the exceedances were related to the Project.
Nevertheless, the Contractor was reminded to implement all relevant
mitigation measures for the marine works, including regular checking of silt
curtain integrity and maintain good site practice. The ET will keep on
checking monitoring data, plant, equipment and Contractor¡¦s working
methods. The ET will also conduct further investigation, including the
review of water quality monitoring data from adjacent projects, to substantiate
the exceedances were not considered as caused by the construction of the
Project.
2.4.1
Monitoring
Requirements
According to the Updated EM&A Manual ()
of the Project, impact soft shore ecological
monitoring
has to be conducted
quarterly at each survey location at Tung Chung Bay (TCB) and Tai Ho Wan (THW)
covering wet and dry seasons during the marine construction of the Project. The soft shore ecological monitoring
consisted of qualitative walk-through surveys, quantitative transect surveys
and sedimentation rate monitoring at the accessible survey locations of TCB and
THW.
For qualitative walk-through surveys,
the accessible shoreline of TCB and THW at each of the three shore heights: 2
m, 1.5 m and 1 m above Chart Datum was surveyed,
and organisms encountered were recorded and their relative abundance
noted. In particular, active search of horseshoe crabs and seagrasses
were conducted to confirm whether these species are present along the
sites.
For quantitative transect survey, one 50
¡V 100 m horizontal (belt) transect (actual length subject to the site
conditions) was surveyed at each of the three shore heights: 2 m, 1.5 m and 1 m
above Chart Datum of each survey location. On each transect, five
quadrats (50 cm x 50 cm) were placed randomly in each transect to assess the
abundance and distribution of flora and fauna.
For each quadrat, surface layer to 5 cm depth was sieved and microbenthic
organisms (e.g. crustaceans) were recorded and identified. Density of organisms
was expressed as individuals / m2. Areas with seagrass were
also recorded and identified and other information, such as the percentage
cover, were also recorded. Sessile animals such as barnacles and oysters
in each quadrat were not counted but estimated as percentage cover on the rock
surface. All species of algae (encrusting, foliose and filamentous) were
also identified and recorded by estimating the percentage cover on the rock
surface. All organisms were identified to the lowest possible taxonomic
level (at least Genus level). Species encountered outside the quadrat but
in the vicinity of survey transect were also recorded.
For sedimentation rate monitoring, to
avoid disturbance to the mudflat and nuisance to navigation, no fixed marker/monitoring
rod was installed at the monitoring stations. A high precision Global
Navigation Satellite System (GNSS) real time location fixing system (or
equivalent technology) was used to locate the station in the precision of 1 mm,
which is reasonable under flat mudflat topography with uneven mudflat surface
only at micro level.
Measurements were taken directly on the
mudflat surface. The Real Time Kinematic GNSS (RTK GNSS) surveying
technology was used to measure mudflat surface levels and 3D coordinates of a
survey point. The RTK GNSS survey was calibrated against a reference
station in the field before and after each survey. The reference station
is a survey control point established by the Lands Department of the HKSAR
Government or traditional land surveying methods using professional surveying
instruments such as total station, level and/or geodetic global navigation
satellite system. The coordinates system is in HK1980 GRID system.
The reference control station was surveyed and established by traditional land
surveying methods using professional surveying instruments such as total
station, level and/or geodetic GNSS. The accuracy was down to mm level
and higher than the proposed RTK GNSS cm level so that the reference control
station has relatively higher accuracy. As the reference control station
has higher accuracy, it was set as true evaluation relative to the RTK GNSS
measurement. All position and height correction were adjusted and
corrected to the reference control station.
The precision of the measured mudflat
surface level reading (vertical precision setting) was within 10 mm (standard
deviation) after averaging the valid survey records of the XYZ HK1980 GRID
coordinates. Each survey record at each station was computed by averaging
at least three measurements that are within the above specified precision
setting. Both digital data logging and written records were collected in
the field. Field data on station fixing and mudflat surface measurement
were recorded.
2.4.2
Monitoring
Schedule for the Reporting Month
The schedule for soft shore ecological
monitoring during the reporting period is provided in Annex G1.
2.4.3
Results and
Observations
Impact soft shore ecological monitoring
was conducted at three (3) monitoring locations at Tung Chung Bay (TCB),
situated in the eastern side (TCB1), southern side (TCB2) and western side
(TCB3) as well as one (1) monitoring location at Tai Ho Wan (THW) as shown in Figure 2.4 during the reporting period. Representative
photographs taken during the impact monitoring are presented in Figure 2.5.
For qualitative walk-through surveys,
horseshoe crabs and intertidal soft shore communities were recorded while
seagrass beds were not observed during the impact monitoring. The survey
results for each monitoring location are summarized in Table 2.11 below
and detailed in Annex G2.
Table 2.11 Summary
of Qualitative Walk-through Surveys
|
Date and Time
|
Location
|
Horseshoe Crabs
|
Seagrass
|
No. of Other Intertidal Species
|
|
No. of Species
|
No. of Individuals
|
No. of Species
|
Area Coverage (m2)
|
|
5/9/2018
08:30-12:30
|
TCB2
|
1
|
3
|
0
|
0
|
40
|
|
7/9/2018
11:00-14:30
|
THW
|
2
|
6
|
0
|
0
|
43
|
|
10/9/2018
13:30-17:00
|
TCB3
|
2
|
19
|
0
|
0
|
44
|
|
11/9/2018
14:00-17:30
|
TCB1
|
2
|
10
|
0
|
0
|
45
|
For quantitative transect surveys, a
total of 4,071 individuals were recorded from all transects at monitoring
stations TCB1-3 and THW. The most abundant group of intertidal soft shore
communities recorded was gastropods, with a total of 3,842 individuals
(relative abundance of 94.4% and density of 256 individual m-2).
The summary of the top three dominant species at each shore height of each
monitoring station and the complete list of species and density recorded are
presented in Annex G2.
When compared
with the results obtained during the baseline monitoring as presented in the
Baseline Monitoring Report (), higher number of
intertidal species were recorded at each monitoring location, though the
abundance / density of intertidal communities was observed to be lowered.
Nevertheless, there is no indication of change in composition of intertidal
communities during the reporting period.
The
mudflat surface levels at the four
selected monitoring stations in
September 2018 and the corresponding XYZ HK1980 GRID coordinates are presented
in Table 2.12.
When compared with the results obtained during the baseline monitoring as
presented in the Baseline Monitoring Report (), the sediment
levels at each monitoring station generally increased. The ET will
continue to observe the trend of change in sediment levels over time for
further comparison and review.
Table 2.12 Results
of Sedimentation Rate Monitoring
|
Monitoring Station
|
Northing (m)
|
Easting (m)
|
Z level at Sep 2018 (mPD)
|
Remarks
|
|
TCB1
|
816068.626
|
811129.309
|
1.545
|
Soft mudflat
|
|
TCB2
|
815812.382
|
810917.245
|
1.322
|
Soft mudflat
|
|
TCB3
|
816027.632
|
810696.839
|
1.314
|
Soft mudflat
|
|
THW
|
817472.067
|
815850.407
|
1.380
|
Soft mudflat
|
The impact monitoring results showed
that there was no evidence showing significant change in intertidal communities
when compared against the data obtained during baseline monitoring. No
action is thus required to be undertaken in accordance with the Event and
Action Plan presented in Annex
G3. The ET will continue to observe the change in density or the
distribution pattern of
horseshoe crab, seagrass and intertidal soft shore communities taking into
account natural fluctuation in the occurrence and distribution pattern such as
due to seasonal change.
Site inspections were carried
out on a weekly basis with the Contractor and ER to monitor the implementation
of proper environmental pollution control and mitigation measures for air quality, noise, water quality,
waste management, marine ecology and landscape and visual impacts under the Project. In
the reporting period, four (4) site inspections were carried out on 6, 13, 20
and 26 September 2018.
Key observations during the
site inspections are summarized in Table 2.13.
Table 2.13 Key
Observations Identified during the Site Inspection in this Reporting Month
|
Inspection Date
|
Environmental Observations
|
Recommendations/ Remarks
|
|
6 September 2018
|
Ground
Investigation (GI) platform (Dong Ah 107)
Ÿ
Stagnant water in
drip tray
GI
platform (Dong Ah 105)
Ÿ
Stagnant water in
drip tray
Ÿ
Chemicals without
drip tray
GI
platform (Kong Yeung 88)
Ÿ
Stagnant water in
lower deck
|
GI
platform (Dong Ah 107)
Ÿ
The contractor was
reminded to clear stagnant water.
GI
platform (Dong Ah 105)
Ÿ
The contractor was
reminded to clear stagnant water; and
Ÿ
The contractor was
reminded to place chemicals in drip tray.
GI
platform (Kong Yeung 88)
Ÿ
The contractor was
reminded to clear stagnant water.
|
|
13 September 2018
|
Works
Area near Man Tung Road
Ÿ
Accumulated debris
at site
Pak
Mong Pier
Ÿ
Used chemicals at
site
|
Works
Area near Man Tung Road
Ÿ
The contractor was
reminded to dispose of the accumulated debris.
Pak
Mong Pier
Ÿ
The contractor was
reminded to regularly remove used chemicals.
|
|
20 September 2018
|
Works
Area near Ying Tung Estate
Ÿ
A water-filled
barrier was found to trap stagnant water
Ÿ
Chemicals without
drip tray
Ÿ
Accumulated debris
at site
Ÿ
Suspended chemical
leakage
Ÿ
Stagnant water in
drip tray
Ÿ
Diesel drum
without chemical labels
Works
Area near Century Link
Ÿ
No noise barrier
provided when working near residential areas
|
Works
Area near Ying Tung Estate
Ÿ
The contractor was
reminded to seal the opening of the barrier to avoid stagnant water;
Ÿ
The contractor was
reminded to place chemicals in drip tray;
Ÿ
The contractor was
reminded to remove accumulated debris;
Ÿ
The contractor was
reminded to cover the ground by canvas and drill on the canvas to avoid soil
contamination by chemicals;
Ÿ
The contractor was
reminded to clear stagnant water in drip tray;
Ÿ
The contractor was
reminded to provide labelling for chemicals.
Works
Area near Century Link
Ÿ
The contractor was
reminded to provide noise barrier when working near residential areas to
reduce noise nuisance from construction works.
|
|
26 September 2018
|
Vessel
(Tat Fat 11)
Ÿ
Diesel drum
without chemical labels
Ÿ
Stagnant water in
tyres
|
Vessel
(Tat Fat 11)
Ÿ
The contractor was
reminded to provide labelling for chemicals.
Ÿ
The contractor was
reminded to clear stagnant water in the tyres.
|
The Contractor has rectified all of the
observations identified during environmental site inspections in the reporting
period.
The Contractor has registered as
chemical waste producer under the Contract. Sufficient numbers of
receptacles were available for general refuse collection and sorting.
All dump trucks engaged on site was
equipped with GPS during the reporting period. The Surveillance Team of
the ET conducted regular site inspection on the dump trucks and their track
records. Illegal dumping and landfilling of C&D materials were not
recorded during the reporting period.
As informed by the Contractor, wastes
generated during this reporting period include mainly imported fill, non-inert
construction wastes and recyclable materials. Reference has been made to
the waste flow table prepared by the Contractor. The quantities of
different types of wastes are summarised in Table 2.14. It should
be noted that the Contractor voluntarily engaged in tree clearance works after
the approach of the Typhoon Mangkhut in mid-September 2018 and hence more
non-inert construction wastes were generated in the reporting period.
Table 2.14 Quantities
of Different Waste Generated
|
Month/
Year
|
Inert C&D Materials (a) (m3)
|
Imported Fill (m3)
|
Inert Construction Waste Re-used
(m3)
|
Non-inert Construction Waste (b)
(m3)
|
Recyclable Materials (c)
(kg)
|
Chemical Wastes (kg)
|
|
|
|
9 to
31 Jul 18
|
0
|
6,665 (d)
|
0
|
20.7
|
0
|
0
|
|
|
1 to
31 Aug 18
|
0
|
20,036
|
0
|
110.1
|
96,740
|
0
|
|
|
1 to
30 Sep 18
|
0
|
14,086
|
0
|
356.3
|
11,120
|
0
|
|
|
Notes:
(a)
Inert construction wastes include hard rock and large broken concrete, and
materials disposed as public fill.
(b)
Non-inert construction wastes include general refuse disposed at landfill.
(c)
Recyclable materials include metals, paper, cardboard, plastics and others.
(d)
Updated figure is presented.
|
|
2.7
Implementation Status of
Environmental Mitigation Measures
A summary of the Environmental
Mitigation Implementation Schedule is presented in Annex B. The necessary
mitigation measures were implemented properly for the Project.
Results for air quality monitoring
(1-hour TSP) complied with the Action/ Limit levels in the reporting
period. One (1) Action level exceedance for construction noise was
recorded from one (1) environmental complaint related to noise nuisance.
No Project-related Action/ Limit level exceedances were recorded for water
quality after preliminary investigation. Results for the soft shore
ecological monitoring did not indicate any change in composition of intertidal
communities when compared to the baseline monitoring results.
Cumulative statistics on exceedances is
provided in Annex H.
There was no notification of summons or
prosecution recorded in the reporting period.
One (1) environmental complaint related
to noise nuisances at works area near Ying Tung Estate on 11 September 2018 and
two (2) environmental complaints related to waste management for the demolition
of site offices near
Century Link and Man Tung Road
on 12 and 26 September 2018 were received during the reporting period.
Investigations were conducted for each of the environmental complaints in
accordance with the complaint handling process as stated in the Complaint
Management Plan.
Based on the information provided by the ER and
the Contractor, supplemented the regular/ad-hoc noise monitoring conducted
around the Project area, there was no exceedance of noise limit levels and
non-compliance was not observed. Nevertheless, the Contractor was
reminded to reduce construction noise levels, as far as practicable, especially
when working next to the residential
areas around the Project. No construction works in the evenings /
restricted hours would be allowed without a valid Construction Noise
Permit. The ET will continue to check the implementation status of the
mitigation measures and conduct noise monitoring as per EM&A requirements.
Based on the information provided by the
ER and the Contractor, supplemented the regular/ad-hoc site inspections
conducted around the Project area, it was observed that the Contractor had
fulfilled the requirements as stated in the Waste Management Plan to maintain
temporary stockpiles and implemented trip-ticket system to ensure Construction
and Demolition (C&D)
materials were disposed properly. The Contractor also followed the waste
management hierarchy as stated in the Waste Management Plan in handling the
waste generated from the site clearance work for the site offices.
Relevant waste materials from the site offices were reused, recovered and
recycled where applicable. Nevertheless, the Contractor was reminded to implement
all relevant mitigation measures of waste management implications and follow
the requirements as stated in the approved Waste Management Plan. The ET
will continue to check the construction works and the implementation status of
the mitigation measures.
Statistics on complaints, notifications
of summons, successful prosecutions are summarised in Annex H.
3
Future Key
Issues
As informed by the Contractor, the major
works for the Project in October 2018 will be:
Land-based Works:
Ÿ
Erection
of chain link fence at Area 58;
Ÿ
Removal
of rock armour above +2.5mPD; and
Ÿ
Preparation
works for diversion of existing box culvert.
Marine-based Works:
Ÿ
Installation
of pipe piles and sheet piles for ground investigation and wave protection
measures;
Ÿ
Removal
of rock armour below +2.5mPD;
Ÿ
Installation
of silt curtain near Tai Ho Wan;
Ÿ
Laying
of geotextile and sand blanket and ground improvement works for reclamation
works and Deep Cement Mixing (DCM) trial embankment;
Ÿ
Marine
filling works;
Ÿ
Diversion
of existing box culvert; and
Ÿ
Marine
ground investigation works.
3.2
Key Issues for the Coming Month
Potential environmental impacts arising
from the above upcoming construction activities in the next reporting period of
October 2018 are mainly associated with noise from barge and plant operation
during normal working hours and restricted hours, elevation in SS due to
sediment loss from sand blanket laying and marine filling works, disturbance to
Chinese White Dolphin (CWD) during marine works, and waste management for
C&D materials. The ET will keep track on the construction works to
confirm compliance of environmental requirements and the proper implementation
of all necessary mitigation measures. The ET will also recommend to the
Contractor about the environmental toolbox topics on the abovementioned key
issues for the coming month.
The tentative schedules for environmental
monitoring in October
2018 are provided in Annex I.
4
Conclusion
and Recommendation
This EM&A Report presents
the findings of the EM&A activities undertaken during the period from 1 to
30 September 2018 in accordance with the Updated EM&A Manual and the
requirements of the Environmental Permit (EP-519/2016).
Air quality (1-hour TSP),
noise, water quality (DO, turbidity and SS) and soft shore ecological
monitoring were carried out in the reporting period.
Results for 1-hour TSP complied with the
Action and Limit levels in the reporting period. One (1) Action level
exceedance for construction noise was recorded from one (1) environmental
complaint related to noise nuisance in the reporting period. No Project-related Action/
Limit level exceedances were recorded for water quality after preliminary
investigation.
Results for the soft shore ecological monitoring did not indicate any change in
composition of intertidal communities when compared to the baseline monitoring
results.
Environmental site inspections were
carried out during the reporting period. Recommendations on remedial actions
were given to the Contractor for the deficiencies identified during the site
inspections.
There was no notification of summons or
prosecution recorded in the reporting period. One (1) environmental
complaint related to noise nuisances at works area near Ying Tung Estate and
two (2) environmental complaints related to waste management for the demolition
of site offices near
Century Link and Man Tung Road
were received on 11, 12 and 26 September 2018 during the reporting
period. Investigations were conducted for each of the environmental
complaints in accordance with the complaint handling process as stated in the
Complaint Management Plan.
The ET will keep track on the
construction works to confirm compliance of environmental requirements and the
proper implementation of all necessary mitigation measures.
