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 31 December 2019 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
|
Lo
Siu Keung
|
2231
4426
|
|
Marine
Conservation Officer
|
Wo
King Tai
|
3894
9707
|
|
Engineer’s
Representative
(ER)
(AECOM
Asia Company Limited)
|
Principal
Resident Engineer
Chief
Resident Engineer
|
Frankie
Fan
Dennis
Leung
|
3894
9403
3894
9404
|
|
Senior
Resident Engineer
|
Chris
Cheung
|
3894
9605
|
|
Resident
Engineer
|
Vincent
Leung
|
3894
9645
|
|
Senior
Inspector of Works
|
C
K Liu
|
3894
9733
|
|
Environmental
Team (ET)
(ERM-Hong
Kong, Limited)
|
ET
Leader
|
Jovy
Tam
|
3894
9507
|
|
Deputy
ET Leader
|
Raymond
Chow
|
3894
9504
|
|
Independent Environmental Checker (IEC)
(Black & Veatch Hong Kong Limited)
|
IEC
|
Manuel
Chua
|
3894 9501
|
|
Deputy
IEC
|
Ivan
Ting
|
3894 9502
|
|
Contractor
(Contract No. NL/2017/03 TCNTE – Reclamation and Advance Works)
(Build
King – SCT Joint Venture)
|
Site
Agent
|
Keith
Tse
|
3903
1503
|
|
Construction
Team Leader
|
Lee
Wai Man
|
3903
1520
|
|
Environmental
Officer
|
Ashley
Au
|
3903
1559
|
|
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:
Table 1.2 Major Activities in the Reporting
Period
|
Activities
|
Key Issues
|
Key Mitigation Measures
|
|
Land-based Works
|
|
|
|
· Roads, drainage,
sewerage works and backfilling work at Area 58 (near Man Tung Road)
· Land-based ground
investigation works
· Land DCM works
· Placing of sorted
public fill
|
· Dust emission
· Handling and storage
of C&D materials generated from construction activities
· Noise from plant
operation
· Emission of dark
smoke from PMEs
· Efficiency of wastewater and drainage
management
|
· Good site practices
· Regular water
spraying on stockpiles, unpaved haul road and land filling area
· Sorting and reuse of
C&D materials as far as practicable
· Use of QPME and noise barrier/acoustic mat
· Regular maintenance
of PMEs
· Implementation of wastewater and
drainage management
|
|
Marine-based Works
|
|
|
|
· Laying of geotextile
and sand blanket for reclamation works and DCM works
· Placing of sorted
public fill
· DCM works
· Seawall construction
|
· Elevation in impact
on Water Quality due to sediment loss from sand blanket laying and marine
filling works
· Potential surface runoff
· Potential filling
material drop from barges
· Disturbance to
Chinese White Dolphin
· Noise from marine
vessels and plant operation during normal working hours or restricted hours
· Dust emission during
storage and transfer of sand/ sorted public fill
· Emission of dark
smoke from marine vessel
|
· Provision of
perimeter silt curtain
· Provision of a
leading seawall of at least 200m before marine filling works
· Regular cleaning of accumulated
sand/fill materials at the edge of the barges
· Implementation of
Dolphin Watching for the marine-based works
· Strictly follow
requirement under CNP for the use of PMEs and works within restricted period
· Use of acoustic mat
and other noise mitigation measures when necessary
· Regular water
spraying and provide tarpaulin sheets coverage on stockpiles
· Regular maintenance
of engines and mechanical equipment
|
The
environmental mitigation implementation schedule is presented in Annex B.
The status for all environmental aspects
are presented in Table 1.3. The EM&A requirements remained
unchanged during the reporting period.
Table 1.3 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 before operation of TCNTE
|
|
|
|
|
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, soft shore
ecological monitoring 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 E2, Annex F2, Annex G2 and Annex H1, 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 committee meeting was held with the Contractor,
ER, ET, IEC and CEDD on 19 December 2019; and
Ÿ
Environmental
toolbox trainings on response for chemical waste storage, dust management,
Works Vessel Travel Route Plan, NRMM label and dolphin watching on 4, 11, 13,
18 and 27 December 2019.
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 Annex C.
1.7
Status of Other Statutory
Environmental Requirements
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
D. 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 E1, 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 – Ying Tung Estate
|
1-hour
TSP
|
Three
times per six days during the construction period of the Project
|
2,
7, 13, 19, 24 and 30 December 2019
|
1-hour
TSP Dust Meter
SIBATA
LD-3B (S/N: 235780 and S/N: 831656)
|
|
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 E2.
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
E3.
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
|
75
|
22-239
|
279
|
500
|
The major dust sources in the reporting
period included haul road traffic, unloading of sand/fill material, filling
works and operation of marine vessels under the Project as well as nearby
traffic emissions.
No exceedance of Action and Limit Levels
was recorded for construction air quality monitoring in the reporting period.
No action is thus required to be undertaken in accordance with the Event and
Action Plan presented in Annex
E4.
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 F1.
Table 2.5 Noise Monitoring Details
|
Monitoring Station (a)
|
Location
|
Parameter
|
Frequency and Duration
|
Monitoring Dates
|
Equipment
|
|
NMS-CA-1A (b)
|
Residential
premise in Tung Chung East – Century Link/Ying Hong Road (c)
|
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
|
2, 7, 13, 19, 24 and 30 December 2019
|
Sound Level Meter: Rion NL-52 (S/N:
00643039)
Acoustic Calibrator: LARSON DAVIS
CAL200 (S/N: 11333)
|
|
NMS-CA-4
|
Residential
premise in the reclamation area next to Tung Chung East – Ying Tung Estate
|
|
|
Remarks:
(a) 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).
(b) 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.
(c) Due to land handover
issue, NMS-CA-1A was relocated to Ying Hong Road which is located 60m away
from the original location. Proposal on the relocation of NMS-CA-1A was
approved by IEC on 23 November 2018. Noise monitoring at the relocated
location commenced since 24 November 2018.
|
2.2.2
Monitoring
Schedule for the Reporting Month
The schedule for noise monitoring during
the reporting period is provided in Annex F2.
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
F3.
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
|
66.5
|
64.8-67.1
|
75
|
|
NMS-CA-4
|
67.1
|
65.0-68.5
|
75
|
Major noise sources during the noise
monitoring included noise from barge and plant operation, DCM works, craning,
haul road traffic and nearby traffic noise and aircraft noise.
No exceedance of Action and Limit Levels
was recorded for construction noise monitoring in the reporting period. No
action is thus required to be undertaken in accordance with the Event and
Action Plan presented in Annex
F4.
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 (a)
|
Frequency
|
Monitoring Dates (b)
|
Depth
|
|
|
|
Easting
|
Northing
|
|
|
|
|
TCE-WQM1
|
Near Airport Channel
|
811838
|
817341
|
Ÿ
Dissolved
Oxygen
(DO)
(mg/L and % saturation)
Ÿ
Temperature (°C)
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
|
2,
4, 6, 9, 11, 13, 16, 18, 20, 23, 25, 27 and 30 December 2019
|
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:
(a) 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 G1.
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: 17H105557)
YSI
6920 v2 (S/N: 0001C6A7; S/N: 00019CB2)
|
|
Note
1: One multi-parameter water quality system was 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 G2.
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. Impact
water quality monitoring results and graphical presentations are provided in Annex G3.
Action and
limit level exceedances were recorded for water quality impact monitoring in
the reporting period and the event and action plan (Annex
G4) 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
|
Date
|
Tide
|
Parameter
|
Station
|
Type
|
Justification
|
|
2
December 2019
|
MF
|
SS
|
TCE-WQM4
|
Action
|
(a)
(b) (c)
|
|
4
December 2019
|
MF
|
SS
|
TCE-WQM1
|
Action
|
(a)
(b) (c)
|
|
6
December 2019
|
MF
|
SS
|
TCE-WQM1
|
Action
|
(a)
(c) (d)
|
|
MF
|
SS
|
TCE-WQM2a
|
Action
|
|
MF
|
SS
|
TCE-WQM4
|
Limit
|
(c)
(d)
|
|
9
December 2019
|
MF
|
SS
|
TCE-WQM4
|
Limit
|
(a)
(c) (d)
|
|
11
December 2019
|
ME
|
SS
|
TCE-WQM2a
|
Action
|
(a)
(c) (d)
|
|
ME
|
SS
|
TCE-WQM4
|
Action
|
|
MF
|
SS
|
TCE-WQM1
|
Limit
|
|
MF
|
SS
|
TCE-WQM3A
|
Action
|
|
MF
|
SS
|
TCE-WQM4
|
Limit
|
|
MF
|
Turbidity
|
TCE-WQM1
|
Action
|
(a)
(c) (d)
|
|
MF
|
Turbidity
|
TCE-WQM4
|
Action
|
|
16
December 2019
|
ME
|
SS
|
TCE-WQM1
|
Action
|
(a)
(b) (c) (d)
|
|
MF
|
SS
|
TCE-WQM1
|
Action
|
|
MF
|
SS
|
TCE-WQM4
|
Action
|
|
18
December 2019
|
ME
|
SS
|
TCE-WQM1
|
Limit
|
(a)
(b) (c) (d)
|
|
20
December 2019
|
MF
|
SS
|
TCE-WQM1
|
Action
|
(a)
(b) (c) (d)
|
|
MF
|
SS
|
TCE-WQM4
|
Limit
|
|
27
December 2019
|
ME
|
SS
|
TCE-WQM2a
|
Action
|
(a)
(b) (c) (e)
|
|
MF
|
SS
|
TCE-WQM2b
|
Action
|
|
30
December 2019
|
MF
|
Turbidity
|
TCE-WQM2a
|
Action
|
(a)
(c) (d) (e)
|
|
MF
|
Turbidity
|
TCE-WQM2b
|
Limit
|
|
MF
|
SS
|
TCE-WQM1
|
Action
|
(a)
(c) (d)
|
|
MF
|
SS
|
TCE-WQM2a
|
Action
|
(a)
(c) (d) (e)
|
|
MF
|
SS
|
TCE-WQM2b
|
Limit
|
|
Remarks:
|
|
(a)
|
The
exceedance was not considered as caused by the construction of the Project
due to no marine construction activity under the Project was conducted near
the water quality monitoring station.
|
|
(b)
|
The
exceedance was not considered
as caused by the construction of the Project due to areas of reclamation
related marine works undertaken under the Project were surrounded by silt
curtain which were inspected daily by the Contractor and inspected
periodically by ER. The silt curtain nearby the water quality monitoring
stations was observed to be in good condition/well-functioning.
|
|
(c)
|
The
exceedance was not considered
as caused by the construction of the Project due to no sediment plume
was observed nearby the water quality monitoring station during the sampling
in mid-ebb/mid-flood tide.
|
|
(d)
|
The
exceedance was not considered as caused by the construction of the Project
due to diving inspection provided by the Contractor indicated that no defects
were found during the inspection.
|
|
(e)
|
The
exceedance was not considered as caused by the construction of the
Project due to the monitoring stations are located upstream/further away
from the Project works area.
|
Based on the investigations conducted for each of the monitoring
day with exceedances, the exceedances of Turbidity and SS are not likely caused
by the work activities 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, provide periodic
maintenance and maintain good site practice. The ET will keep on checking
monitoring data, plant, equipment and Contractor’s working methods.
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
– 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 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 using
professional surveying instruments such as total station, level and geodetic
global navigation satellite system. The coordinates system is in HK1980 GRID
system. The reference station was surveyed and established by traditional land
surveying methods using professional surveying instruments such as total
station, level and 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
H1.
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 during the impact monitoring. The survey results for
each monitoring location are summarized in Table 2.11 below and detailed
in Annex H2.
Table 2.11 Summary of Qualitative
Walk-through Surveys
|
Date and Time (1)
|
Location
|
Horseshoe Crabs
|
Seagrass
|
No. of Other Intertidal Species
|
|
No. of Species
|
No. of Individuals
|
No. of Species
|
Area Coverage (m2)
|
|
2/12/2019
09:00-13:00;
16/12/2019
09:00-13:00
|
TCB1
|
0
|
0
|
0
|
0
|
58
|
|
2/12/2019
09:00-13:00;
16/12/2019
09:00-13:00
|
TCB2
|
0
|
0
|
0
|
0
|
38
|
|
3/12/2019
10:00-14:00
|
TCB3
|
1
|
7
|
0
|
0
|
43
|
|
17/12/2019
09:00-13:00
|
THW
|
1
|
4
|
0
|
0
|
48
|
Note:
(1) For
qualitative
walk-through surveys, surveys were conducted on 3 December
2019 at TCB3, 16 December 2019 at TCB1 and TCB2 and 17
December
2019 at THW. For quantitative transect surveys, surveys
were conducted on 2 December 2019 at TCB1 and TCB2, 3 December 2019 at TCB3 and
17 December
2019 at THW.
For quantitative transect surveys, a
total of 4,490 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 4,251 individuals (relative abundance of 94.7%
and density of 283 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
H2. 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
December 2019 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 all monitoring
stations decreased. 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 December 2019
(mPD)
|
Remarks
|
|
TCB1
|
816068.675
|
811129.264
|
1.180
|
Soft mudflat
|
|
TCB2
|
815812.727
|
810917.358
|
1.113
|
Soft mudflat
|
|
TCB3
|
816027.376
|
810696.222
|
0.989
|
Soft mudflat
|
|
THW
|
817472.008
|
815850.355
|
0.956
|
Soft mudflat
|
Based on the impact monitoring results,
there was no evidence showing any 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 H3. 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
respect of the occurrence and distribution pattern.
2.5
EM&A Site Inspection
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 5, 12, 19 and
23 December 2019.
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
|
|
5 December 2019
|
Tung
Chung East Reclamation Area
Ÿ
Gaps between silt
curtain was observed.
Ÿ
Tarpaulin sheets
were observed broken and in bad condition
|
Tung
Chung East Reclamation Area
Ÿ
The Contractor was
reminded to provide repairing immediately.
Ÿ
The Contractor was
reminded to repair or replace new tarpaulin sheets to prevent fill materials falling
into the sea during unloading works.
|
|
12 December 2019
|
Tung
Chung East Reclamation Area
Ÿ
Gaps between silt
curtain was observed.
Ÿ
Dust was observed
generating from sand barge.
|
Tung
Chung East Reclamation Area
Ÿ
The Contractor was
reminded to provide repairing immediately.
Ÿ
The Contractor was
reminded to provide watering immediately.
|
|
19 December 2019
|
Tung
Chung East Reclamation Area
Ÿ
Gaps between silt
curtain was observed.
DCM
barge (DJ6)
Ÿ
Chemical container
was observed not placed in drip tray.
|
Tung
Chung East Reclamation Area
Ÿ
The Contractor was
reminded to provide repairing immediately.
DCM
barge (DJ6)
Ÿ
The Contractor was
reminded to place chemical container in drip tray.
|
|
23 December 2019
|
WA1
Ÿ
The sprinkler
system was observed not working effectively.
|
WA1
Ÿ
The Contractor was
reminded to provide repairing.
|
The Contractor has rectified all of the
observations identified during environmental site inspections in the reporting
period. The
Contractor was reminded to implement all relevant mitigation measures
outlined in the EIA Report and EM&A Manual.
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 RTTM system during the reporting period. The Surveillance Team
of the ET conducted regular site inspection on the dump trucks and their track
records. No illegal dumping and landfilling of C&D materials was found
during the reporting period.
Wastes generated during this reporting
period include mainly non-inert construction wastes, chemical waste and
recyclable materials. The Project imports fill materials including mainly sand
and public fill. In addition, the Project reuses inert construction materials
from other projects which are not generated by the Project for reclamation
activities i.e. imported fill (sand) for sand blanket. Reference has been made
to the waste flow table prepared by the Contractor. The quantities of
different types of wastes and imported fill materials are summarised in Table
2.14.
Table
2.14 Quantities of
Different Waste Generated and Imported Fill Materials
|
Month/
Year
|
Inert C&D Materials (a)
(m3)
|
Imported Fill (d) (e) (sand)
(m3)
|
Imported Fill (d) (public
fill) (m3)
|
Inert Construction Waste
Re-used (m3)
|
Non-inert Construction Waste
(b) (m3)
|
Recyclable Materials (c)
(kg)
|
Chemical Wastes (kg)
|
|
|
|
1
to 31 Oct 19
|
0
|
51,630
|
349,925
|
1,300
|
45.0
|
272.0
|
1,600
|
|
1
to 30 Nov 19
|
0
|
97,996
|
317,107
|
1,975
|
64.0
|
218.0
|
1,600
|
|
1
to 31 Dec 19
|
0
|
127,124
|
303,556
|
1,488
|
70.0
|
359.0
|
1,815
|
|
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)
Imported fill materials include sand and public fill.
(e)
No glass cullet was imported in the reporting period.
|
|
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.
The monitoring results for air quality
monitoring (1-hour TSP) complied with the Action/ Limit levels in the reporting
period.
No exceedance of Limit Levels was
recorded for construction noise monitoring in the reporting period. However,
five (5) Action Level were triggered from five (5) environmental complaints
related to noise nuisance in the reporting period.
No Project-related Action/ Limit level
exceedances were recorded for water quality after investigations.
Cumulative statistics on exceedances is
provided in Annex I.
There was no notification of summons or
prosecution recorded in the reporting period.
Five
(5) environmental complaints were received in the reporting period.
Investigations were conducted for 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
2.15.
Table
2.15 Summary of Environmental
Complaints
|
|
Complaint(s)
|
Investigation/Follow up action(s)
|
|
|
|
|
|
1
|
Environmental
complaint related to machine
noise from reclamation project during evening was received on 2 and 3 December
2019.
|
Based
on the information provided by the ER and the Contractor, supplemented
additional inspections and noise monitoring, there was no non-compliance
observed. Although all
construction works conducted complied with statutory requirement as stated in
the Construction Noise Permit, Contractor was suggested to further review the
end time of DCM and other construction activities works to avoid carry out
late night works after 10:30pm to minimize any potential noise nuisance when
possible.
|
|
|
|
|
|
2
|
Environmental
complaint related to construction
noise during evening was received on 2 and 3 December 2019.
|
Based
on the information provided by the ER and the Contractor, supplemented
additional inspections and noise monitoring, there was no non-compliance
observed. Although all construction works conducted complied with
statutory requirement as stated in the Construction Noise Permit, Contractor
was suggested to further review the end time of DCM and other construction
activities to minimize any potential noise nuisance when possible.
|
|
|
|
|
|
3
|
Environmental
complaint related to noise
from operation of DCM barge during evening was received on 17 December 2019.
|
Based
on the information provided by the ER and the Contractor, supplemented
additional inspections and noise monitoring, there was no non-compliance
observed. Although all construction works conducted complied with
statutory requirement as stated in the Construction Noise Permit, Contractor
was suggested to further review the end time of DCM and other construction
activities works to avoid carry out late night works to minimize any
potential noise nuisance when possible.
|
|
|
|
|
|
4
|
Environmental
complaint related to noise
from the operation of bulldozer during morning and dust issue was
received
on 23 December 2019.
|
Based
on the information provided by the ER and the Contractor, supplemented weekly
noise monitoring and air quality monitoring, all the noise level data were
below the noise limit level and complied with the statutory requirements. In
addition, all air quality monitoring results were complied with the Action
and Limit Level and no exceedance of Action and Limit Level was recorded. Although
all noise and air quality monitoring result complied with the statutory
requirement, movement of bulldozer and noise generated from dump truck which
were likely due to the movement of the back panel during loading unloading
activities should be considered as the noise contributors in this complaint
case. Therefore, Contractor would avoid mobilization of the bulldozer in the
early morning and reduce the number of dump trucks on site by replacing it
with dumpers to minimize any potential noise contribution.
|
|
|
|
|
|
5
|
Environmental
complaint related to noise and construction dust arising from the
reclamation construction site during normal day was received on 24 December 2019.
|
Based
on the information provided by the ER and the Contractor, supplemented weekly
noise monitoring and air quality monitoring, all the noise level data were
below the noise limit level and complied with the statutory requirements. In
addition, all air quality monitoring results were complied with the Action
and Limit Level and no exceedance of Action and Limit Level was recorded. Although
all monitoring data were complied with the action and limit level with no
exceedance recorded, movement of dump trucks during dry weather should be
considered as a potential contributing factor to the dust arising.
Therefore, the Contractor was reminded to review the adequate of watering at
the site area and further increase the coverage/frequency of the water spraying
when necessary. In addition, the Contractor was suggested to further review
the start time and end time of DCM and other construction activities works to
minimize any potential noise nuisance when possible.
|
Statistics on complaints, notifications
of summons, successful prosecutions are summarised in Annex I.
3
Future Key
Issues
Works to be undertaken in
the next monitoring period of January 2020 are summarized in Table 3.1
below, together with the key issues and the key mitigation measures:
Table 3.1 Major
Activities for the Next Reporting Period
|
Activities
|
Key Issues
|
Key Mitigation Measures
|
|
Land-based Works
|
|
|
|
· Roads, drainage,
sewerage works and backfilling work at Area 58 (near Man Tung Road)
· Land-based ground
investigation works
· Land DCM works
· Placing of sorted
public fill
|
· Dust emission
· Handling and storage
of C&D materials generated from construction activities
· Noise from plant
operation
· Emission of dark
smoke from PMEs
· Efficiency of wastewater and drainage
management
|
· Good site practices
· Regular water
spraying on stockpiles, unpaved haul road and land filling area
· Sorting and reuse of
C&D materials as far as practicable
· Use of QPME and noise barrier/acoustic mat
· Regular maintenance
of PMEs
· Implementation of wastewater and
drainage management
|
|
Marine-based Works
|
|
|
|
· Laying of geotextile
and sand blanket for reclamation works and DCM works
· Placing of sorted
public fill
· DCM works
· Seawall construction
|
· Elevation in impact
on Water Quality due to sediment loss from sand blanket laying and marine
filling works
· Potential surface runoff
· Potential filling
material drop from barges
· Disturbance to
Chinese White Dolphin
· Noise from marine
vessels and plant operation during normal working hours or restricted hours
· Dust emission during
storage and transfer of sand/ sorted public fill
· Emission of dark
smoke from marine vessel
|
· Provision of
perimeter silt curtain
· Provision of a leading
seawall of at least 200m before marine filling works
· Regular cleaning of accumulated
sand/fill materials at the edge of the barges
· Implementation of
Dolphin Watching for the marine-based works
· Strictly follow
requirement under CNP for the use of PMEs and works within restricted period
· Use of acoustic mat
and other noise mitigation measures when necessary
· Regular water
spraying and provide tarpaulin sheets coverage on stockpiles
· Regular maintenance
of engines and mechanical equipment
|
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.
The tentative schedules for
environmental monitoring in January
2020 are provided in Annex J.
4
Conclusion
and Recommendation
This EM&A Report presents
the findings of the EM&A activities undertaken during the period from 1 to
31 December 2019 in accordance with the Updated EM&A Manual and the
requirements of the Environmental Permit (EP-519/2016).
Air quality (1-hour TSP),
noise and water quality (DO, turbidity and SS) and soft shore ecological
monitoring were carried out in the reporting period.
The monitoring results for air quality
monitoring (1-hour TSP) complied with the Action/ Limit levels in the reporting
period.
No exceedance of Limit Levels was
recorded for construction noise monitoring in the reporting period. However,
five (5) Action Level were triggered from five (5) environmental complaints
related to noise nuisance in the reporting period.
No Project-related Action/
Limit level exceedances were recorded for water quality after investigations.
Based on the monitoring results for soft
shore ecological monitoring, there was no evidence showing any 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 respect of the occurrence and distribution
pattern.
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. Five (5) environmental
complaints were
received during the reporting period.
Investigations were conducted for the environmental complaints in accordance with the complaint
handling process as stated in the Complaint Management Plan. The Contractor
was reminded that although
all construction works conducted complied with statutory requirement, it was
suggested to further review the operation time of DCM and other construction
activities works to minimize any potential noise nuisance when possible. In
addition, the Contractor was reminded to review the adequate of watering at the
site area and further increase the coverage and frequency of the water spraying
when necessary.
The ET will keep track on the
construction works to confirm compliance of environmental requirements and the
proper implementation of all necessary mitigation measures.
