A1.
The Project, Integrated Waste Management
Facility (IWMF), is a Designated Project under the Environmental Impact
Assessment Ordinance (Cap. 499) (EIAO) and is currently governed by a Further
Environmental Permit (FEP No. FEP-01/429/2012/A) for the construction and
operation of the Project.
A2.
In accordance with the Updated Environmental
Monitoring and Audit (EM&A) Manual for the Project, EM&A works for
marine water quality, noise, waste management and ecology should be carried out
by Environmental Team (ET), Acuity Sustainability Consulting Limited (ASCL), during
the construction phase of the Project.
A3.
This is the 3rd Quarterly EM&A Report, prepared by ASCL, for the Project
summarizing and concluding the
monitoring results and audit findings of the EM&A programme at and around
Shek Kwu Chau (SKC) during the reporting period from 1 January 2019 to 31 March 2019.
A4.
The EM&A works for construction noise, water
quality, construction waste, coral, marine mammal and White-Bellied Sea Eagle
(WBSE) were conducted during the reporting period in accordance with the
Updated EM&A Manual.
A5.
Weekly site inspections of the construction
works were carried out by ET to
audit the mitigation measures implementation status. Monthly joint site
inspections were carried out by ET and IEC.
1.
Basic Project Information
1.1.
The Reporting Scope
1.1.1
This is the 3rd Quarterly EM&A
Report for the Project which summarizes the key findings of the EM&A
programme during the reporting period from 1 January 2019 to 31 March 2019.
1.2.
Project Organization
1.1.2
The Project Organization structure for
Construction Phase is presented
in Figure 1.1.
|
|
Figure 1.1 Project
Organization Chart
|
1.1.3
Contact details of the key personnel are presented
in Table 1.1 below:
Table 1.1 Contact Details of Key Personnel
|
Party
|
Position
|
Name
|
Telephone no.
|
|
Environmental
Protection Department
|
Project
Proponent
|
Cheng Tak-Kuen
|
2594-6111
|
|
Keppel Seghers
¡V Zhen Hua Joint Venture
|
Project
Manager
|
Kenny Yu
|
2192-0606
|
|
Acuity
Sustainability Consulting Limited
|
Environmental
Team Leader
|
Robin Ho
|
2698-6833
|
|
ERM-Hong Kong,
Limited
|
Independent
Environmental Checker
|
Mandy To
|
2271-3000
|
1.3.
Summary of Construction Works
1.1.4
Details of the major construction activities
undertaken in this reporting period are shown in Table 1.2 below. The construction programme is presented in Appendix A.
Table 1.2 Summary of the Construction Activities Undertaken during the Reporting Period
|
Location of works
|
Construction activities undertaken
|
Remarks on progress
|
|
Seawall and
breakwater locations
|
¡P
Marine site
investigation works
|
¡P
Completed
|
|
Location of
DCM Site Trial
|
¡P
Coring of DCM
samples
|
¡P
Completed
|
|
Seawall
locations
|
¡P
Collecting of
Marine Sediment Samples
|
¡P
Completed
|
|
Location of
DCM Static Loading Test
|
¡P
DCM installation
|
¡P
Completed
|
|
Seawall and
berth area
|
¡P
Laying of
Geotextile and Sand Blanket
|
¡P
73 out of 95
geotextiles were laid
¡P
Completed for sand
blanket laying
|
|
Seawall and
berth area
|
¡P
DCM installation
¡P
Dredging operation
|
¡P
On-going
|
1.1.5
The status for all environmental aspects is
presented in Table 1.3.
Table 1.3 Summary of Status
for Key Environmental Aspects under the Updated EM&A Manual
1.1.6
Other than the EM&A works by ET, environmental
briefings, trainings and
regular environmental management meetings were conducted, in order to enhance
environmental awareness and closely monitor the environmental performance of
the contractors.
1.1.7
The EM&A programme has been implemented in
accordance with the recommendations presented in the approved EIA Report and
the Updated EM&A Manual. A summary of updated implementation status of the
environmental mitigation measures for the construction phase of the Project
during the reporting period is provided in Appendix B.
2.
Marine Water Quality Monitoring
2
2.1
Water
Quality Parameters
2.1.1
Measurement of Dissolved Oxygen (DO), Turbidity,
Suspended Solids (SS), Salinity and pH have been undertaken at the eleven
monitoring stations during general water quality monitoring. Besides the above
parameters, monitoring of Total Alkalinity, Current Velocity and Current
Direction have been undertaken at all fourteen monitoring stations (including
S1, S2 and S3) during regular DCM monitoring.
2.1.2
Current velocity and direction, DO, temperature,
salinity, turbidity and pH were measured in-situ and the SS, Total Alkalinity
were assayed in a HOKLAS laboratory.
2.1.3
In associate with the water quality parameters,
other relevant data were also measured, such as monitoring location/position,
time, water depth, sampling depth, tidal stages, weather conditions and any
special phenomena or work underway nearby were also recorded.
2.1.4
The initial intensive DCM monitoring programme
has been conducted daily from 11 February to 24 February 2019 and conducted
every two days from 25 February to 10 March 2019. The actual duration of the
initial DCM monitoring might extend beyond four weeks should there be any
exceedances in specific-DCM parameters (Temperature & Alkalinity) of water
quality action and limit levels.
2.1.5
Table 2.1
summarizes the monitoring parameters, frequency and duration of the impact water
quality monitoring.
Table 2.1 Water Quality Monitoring Parameters, Frequency
and Duration
|
Parameter,
unit
|
Frequency
|
No.
of Depths
|
|
¡P
Water Depth(m)
¡P
Temperature(oC)
¡P
Salinity(ppt)
¡P
pH (pH unit)
¡P
Dissolved Oxygen (DO)(mg/L and % of saturation)
¡P
Turbidity(NTU)
¡P
Suspended Solids (SS), mg/L
¡P
Total alkalinity
¡P
Current velocity
¡P
Direction
|
General
water quality monitoring and Regular DCM monitoring:
3
days per week, at mid-flood and mid-ebb tides
*Intensive
DCM monitoring:
Daily
in first 2 weeks, at mid-flood and mid-ebb tides. if no exceedance is
recorded within the first two weeks, then the monitoring frequency can be
reduced to every two days.
|
3
water depths: 1m below sea surface, mid-depth and 1m above sea bed.
If
the water depth is less than 3m, mid-depth sampling only.
If
water depth is less than 6m, mid-depth may be omitted.
|
Note:
*Exccedances referred to total alkalinity and temperature only. These should be
confirmed by ET and verified by IEC as project-related.
2.2
Water
Quality Monitoring Locations
2.2.1
Impact water quality monitoring was conducted at
eleven monitoring locations during general water quality monitoring and
fourteen water monitoring locations during regular DCM monitoring, as shown in Figure
2.1.
|
Figure 2.1 Water monitoring locations at Artificial Island near SKC
|
2.2.2
For initial intensive DCM monitoring, mobile
impact monitoring stations shall be located within fixed distances from the DCM
group works area to obtain water quality information in the immediate upstream
and downstream area. A total of 12 nos. monitoring stations will be deployed
with the following arrangement and illustrated in Figure 2.2.
Figure 2.2 Water monitoring locations during intensive DCM monitoring
2.3
Action
and Limit Levels
2.3.1
Based on the baseline monitoring data and the
derivation criteria specified in the Updated EM&A Manual and Detailed Plan on Deep Cement Mixing, the Action/Limit
Levels are presented in Table 2.2.
Table 2.2 Derived Action and Limit Levels for Water Quality Monitoring (Dry
Season)
|
Parameters
|
Action
|
Limit
|
|
Construction Phase
Impact Monitoring
|
|
DO in mg/L
|
≤ 7.13
|
≤ 4
|
|
SS in mg/L
|
≥ 8 or 120% of control
station¡¦s SS at the same tide of the same day of measurement, whichever is
higher
|
≥ 10 or 130% of
control station's SS at the same tide of the same day of measurement,
whichever is higher
|
|
Turbidity in NTU
|
≥ 5.6 or 120% of
control station¡¦s turbidity at the same tide of the same day of measurement,
whichever is higher
|
≥ 12.81 or 130% of
control station's turbidity at the same tide of the same day of measurement,
whichever is higher
|
|
Temperature in¢XC
|
1.8¢XC above the
temperature recorded at representative control station at the same tide of
the same day
|
2¢XC above the
temperature recorded at representative control station at the same tide of
the same day
|
|
Total Alkalinity in mg/L
|
≥116 or 120% of
control station¡¦s Total Alkalinity at the same tide of the same day of
measurement, whichever is higher
|
≥ 118 or 130% of
control station¡¦s Total Alkalinity at the same tide of the same day of
measurement, whichever is higher
|
Notes:
i.
"Depth-averaged"
is calculated by taking the arithmetic means of reading of all three depths.
ii.
For
DO, non-compliance of the water quality limits occurs when monitoring result is
lower than the limits.
iii.
For
turbidity, SS and Salinity, non-compliance of the water quality limits occurs
when monitoring result is higher than the limits.
2.3.2
The Action and Limit (AL) levels for
DCM-specific and other water quality parameters during initial intensive DCM
monitoring with referring to Detailed Plan on Deep Cement Mixing, as shown in Table
2.3 and 2.4 below respectively.
Table 2.3 Action and Limit Levels for
DCM-specific Water Quality Parameters (Intensive DCM Monitoring)
|
Parameters
|
Action
|
Limit
|
|
Construction Phase
Impact Monitoring
|
|
Temperature
in¢XC
|
1.8¢XC
above the temperature recorded at representative control station at the same
tide of the same day
|
2¢XC
above the temperature recorded at representative control station at the same
tide of the same day
|
|
Total Alkalinity in
mg/L
|
95 percentile of baseline
data or 120% of representative control station at the same tide of the same
day, whichever is higher
|
99 percentile of
baseline data or 130% of representative control station at the same tide of
the same day, whichever is higher
|
Notes:
i.
"Depth-averaged"
is calculated by taking the arithmetic means of reading of all three depths.
ii.
For
Temperature and Total Alkalinity, non-compliance of the water quality limits
occurs when monitoring result is higher than the limits.
Table 2.4 Action and Limit Levels for Other
Water Quality Parameters (Intensive DCM Monitoring)
|
Parameters
|
Action
|
Limit
|
|
Construction Phase
Impact Monitoring
|
|
DO in mg/L (Surface
and middle)
|
80% of representative
control station at the same tide of the same day or 4mg/L, whichever is
lower.
|
70% of representative
control station at the same tide of the same day or 4mg/L, whichever is
lower.
|
|
DO in mg/L (Bottom)
|
80% of representative
control station at the same tide of the same day or 2mg/L, whichever is
lower.
|
70% of representative
control station at the same tide of the same day or 2mg/L, whichever is
lower.
|
|
SS in mg/L
|
120% of representative
control station at the same tide of the same day.
|
130% of representative
control station at the same tide of the same day.
|
|
Turbidity in NTU
|
Notes:
i.
"Depth-averaged"
is calculated by taking the arithmetic means of reading of all three depths.
ii.
For
DO, non-compliance of the water quality limits occurs when monitoring result is
lower than the limits.
iii.
For
SS and Turbidity, non-compliance of the water quality limits occurs when
monitoring result is higher than the limits.
2.4
Monitoring
Results and
Observations
2.4.1
DCM injection works and sand blanket laying
works were conducted during the reporting period, thus both general water
quality monitoring at the eleven monitoring stations and general DCM monitoring including monitoring
stations S1, S2 and S3 were conducted. Monitoring results of 7 key parameters:
Salinity, DO, turbidity, SS, pH, temperature and total alkalinity in each month
of this reporting period, are summarized in Table 2.5, and results
trending are presented graphically in Appendix C.
2.4.2
During the reporting period, initial intensive
DCM water quality monitoring was conducted between 25 February to 10 March 2019
at all twelve monitoring stations consisting of UC1, UC2 and I1 to I10. Monitoring results of 7 key
parameters: Salinity, DO, turbidity, SS, pH, temperature and total alkalinity
for initial intensive DCM monitoring in this reporting month, are summarized in
Table 2.6, and details results are presented in Appendix C.
Table 2.5 Summary of Regular DCM Impact Water Quality Monitoring Results
|
Locations
|
Parameters
|
|
Salinity
(ppt)
|
Dissolved
Oxygen (mg/L)
|
pH
|
Turbidity
(NTU)
|
Suspended
Solids (mg/L)
|
Temp.
(oC)
|
Total
Alkalinity (mg/L)
|
|
Surface
& Middle
|
Bottom
|
|
Jan
|
Feb
|
Mar
|
Jan
|
Feb
|
Mar
|
Jan
|
Feb
|
Mar
|
Jan
|
Feb
|
Mar
|
Jan
|
Feb
|
Mar
|
Jan
|
Feb
|
Mar
|
Jan
|
Feb
|
Mar
|
Jan
|
Feb
|
Mar
|
|
B1
|
Avg.
|
30.19
|
30.70
|
30.60
|
9.16
|
10.48
|
10.56
|
9.15
|
10.52
|
10.54
|
8.15
|
8.43
|
8.93
|
4.3
|
3.4
|
2.5
|
6.69
|
4.28
|
5.23
|
20.1
|
21.2
|
20.8
|
112.9
|
111.8
|
110.3
|
|
Min.
|
29.04
|
29.36
|
27.45
|
8.23
|
8.70
|
7.91
|
8.29
|
8.56
|
7.67
|
8.00
|
8.01
|
8.28
|
2.1
|
1.2
|
1.2
|
2.00
|
2.00
|
2.00
|
17.6
|
19.8
|
17.2
|
111.0
|
110.0
|
90.0
|
|
Max.
|
31.57
|
32.94
|
33.60
|
10.32
|
13.43
|
13.04
|
10.30
|
14.06
|
13.01
|
8.48
|
9.17
|
9.51
|
8.3
|
4.8
|
4.5
|
11.00
|
10.00
|
12.00
|
22.8
|
22.8
|
23.9
|
115.0
|
113.0
|
113.0
|
|
B2
|
Avg.
|
30.23
|
30.71
|
30.61
|
9.31
|
10.59
|
10.40
|
9.30
|
10.61
|
10.40
|
8.15
|
8.40
|
8.89
|
4.3
|
3.4
|
2.3
|
6.53
|
3.88
|
5.28
|
20.1
|
21.2
|
20.8
|
113.0
|
111.8
|
110.7
|
|
Min.
|
29.05
|
29.11
|
27.52
|
8.48
|
8.57
|
7.54
|
8.40
|
8.59
|
7.65
|
8.00
|
8.01
|
8.24
|
1.6
|
1.2
|
0.6
|
3.00
|
2.00
|
2.00
|
17.6
|
19.8
|
17.3
|
111.0
|
110.0
|
91.0
|
|
Max.
|
31.80
|
33.77
|
33.28
|
10.69
|
14.01
|
12.77
|
10.62
|
13.77
|
12.85
|
8.50
|
9.14
|
9.51
|
8.0
|
4.9
|
4.8
|
13.00
|
9.00
|
10.00
|
22.8
|
22.8
|
23.9
|
115.0
|
113.0
|
113.0
|
|
B3
|
Avg.
|
30.20
|
30.85
|
30.76
|
9.23
|
10.65
|
10.24
|
9.23
|
10.62
|
10.27
|
8.14
|
8.43
|
8.94
|
4.3
|
3.4
|
2.3
|
7.07
|
4.21
|
5.41
|
20.1
|
21.1
|
20.7
|
113.0
|
111.8
|
110.8
|
|
Min.
|
29.01
|
29.37
|
27.49
|
8.36
|
8.67
|
7.87
|
8.21
|
8.54
|
7.77
|
8.00
|
8.00
|
8.19
|
2.0
|
1.1
|
0.7
|
3.00
|
2.00
|
2.00
|
17.6
|
19.8
|
17.5
|
111.0
|
110.0
|
104.0
|
|
Max.
|
31.77
|
33.61
|
33.37
|
10.51
|
13.87
|
12.32
|
10.45
|
13.75
|
12.35
|
8.50
|
9.15
|
9.46
|
8.0
|
5.0
|
4.9
|
17.00
|
8.00
|
12.00
|
22.8
|
22.8
|
23.9
|
115.0
|
113.0
|
113.0
|
|
B4
|
Avg.
|
30.19
|
30.62
|
30.55
|
9.18
|
10.48
|
10.57
|
9.15
|
10.44
|
10.52
|
8.15
|
8.43
|
8.91
|
4.3
|
3.4
|
2.5
|
7.29
|
4.52
|
5.17
|
20.1
|
21.2
|
20.7
|
113.1
|
111.9
|
111.0
|
|
Min.
|
29.20
|
29.11
|
27.31
|
8.28
|
8.69
|
7.77
|
8.34
|
8.70
|
7.84
|
8.00
|
8.00
|
8.31
|
1.6
|
1.0
|
0.7
|
2.00
|
2.00
|
2.00
|
17.6
|
19.8
|
17.2
|
111.0
|
110.0
|
107.0
|
|
Max.
|
31.76
|
33.28
|
33.40
|
10.47
|
13.46
|
12.99
|
10.30
|
13.99
|
12.89
|
8.49
|
9.16
|
9.50
|
8.2
|
4.6
|
4.8
|
17.00
|
9.00
|
12.00
|
22.8
|
22.8
|
23.9
|
115.0
|
114.0
|
114.0
|
|
C1
|
Avg.
|
30.16
|
30.73
|
30.53
|
9.19
|
10.71
|
10.33
|
9.19
|
10.76
|
10.36
|
8.17
|
8.45
|
8.91
|
4.3
|
3.3
|
2.4
|
7.28
|
4.12
|
5.50
|
20.1
|
21.2
|
20.8
|
113.1
|
111.6
|
110.9
|
|
Min.
|
29.13
|
29.12
|
27.47
|
7.99
|
8.57
|
7.55
|
8.03
|
8.58
|
7.63
|
8.00
|
8.00
|
8.13
|
2.1
|
1.3
|
1.0
|
3.00
|
2.00
|
2.00
|
17.6
|
19.8
|
17.3
|
111.0
|
110.0
|
106.0
|
|
Max.
|
31.76
|
33.85
|
33.35
|
10.63
|
13.88
|
12.90
|
10.60
|
13.79
|
12.50
|
8.50
|
9.17
|
9.56
|
8.2
|
4.8
|
4.9
|
15.00
|
12.00
|
11.00
|
22.8
|
22.8
|
23.9
|
116.0
|
113.0
|
114.0
|
|
C2
|
Avg.
|
30.15
|
30.62
|
30.56
|
9.24
|
10.53
|
10.35
|
9.24
|
10.54
|
10.35
|
8.13
|
8.43
|
8.92
|
4.3
|
3.3
|
2.5
|
7.88
|
4.44
|
5.55
|
20.1
|
21.2
|
20.7
|
113.1
|
111.8
|
110.9
|
|
Min.
|
29.12
|
29.18
|
27.59
|
7.80
|
8.57
|
7.65
|
7.98
|
8.76
|
7.63
|
8.00
|
8.01
|
8.16
|
1.8
|
1.3
|
1.1
|
3.00
|
2.00
|
2.00
|
17.6
|
19.8
|
17.3
|
111.0
|
110.0
|
106.0
|
|
Max.
|
31.79
|
33.87
|
33.14
|
10.45
|
13.91
|
13.03
|
10.43
|
14.01
|
13.06
|
8.50
|
9.17
|
9.43
|
8.5
|
5.1
|
4.7
|
17.00
|
9.00
|
11.00
|
22.8
|
22.8
|
23.9
|
115.0
|
113.0
|
114.0
|
|
CR1
|
Avg.
|
30.20
|
30.71
|
30.58
|
9.29
|
10.63
|
10.50
|
9.29
|
10.61
|
10.44
|
8.15
|
8.43
|
8.93
|
4.3
|
3.3
|
2.3
|
7.04
|
4.08
|
5.64
|
20.1
|
21.2
|
20.7
|
113.0
|
112.0
|
110.9
|
|
Min.
|
29.19
|
29.06
|
27.73
|
8.58
|
8.56
|
7.58
|
8.57
|
8.55
|
7.74
|
8.00
|
8.00
|
8.14
|
1.5
|
1.2
|
0.4
|
2.00
|
2.00
|
2.00
|
17.6
|
19.8
|
17.3
|
111.0
|
111.0
|
106.0
|
|
Max.
|
31.57
|
33.24
|
33.07
|
10.48
|
13.94
|
13.04
|
10.57
|
13.98
|
13.04
|
8.50
|
9.17
|
9.52
|
7.9
|
4.9
|
4.8
|
11.00
|
8.00
|
12.00
|
22.8
|
22.8
|
23.9
|
115.0
|
113.0
|
114.0
|
|
CR2
|
Avg.
|
30.15
|
30.61
|
30.50
|
9.22
|
10.31
|
10.15
|
9.24
|
10.40
|
10.15
|
8.15
|
8.44
|
8.91
|
4.3
|
3.3
|
2.5
|
6.52
|
4.48
|
5.92
|
20.1
|
21.1
|
20.7
|
113.0
|
111.9
|
110.8
|
|
Min.
|
29.17
|
29.09
|
27.54
|
8.26
|
8.70
|
7.65
|
8.28
|
8.75
|
7.71
|
8.00
|
8.00
|
8.14
|
1.9
|
1.2
|
0.6
|
2.00
|
2.00
|
2.00
|
17.6
|
19.8
|
17.2
|
111.0
|
111.0
|
106.0
|
|
Max.
|
31.77
|
33.86
|
33.42
|
10.34
|
13.71
|
12.33
|
10.34
|
13.44
|
12.30
|
8.49
|
9.17
|
9.51
|
7.9
|
4.8
|
4.9
|
13.00
|
12.00
|
11.00
|
22.8
|
22.8
|
23.9
|
116.0
|
113.0
|
114.0
|
|
F1
|
Avg.
|
30.23
|
30.82
|
30.67
|
9.19
|
10.40
|
10.43
|
9.19
|
10.40
|
10.45
|
8.13
|
8.42
|
8.93
|
4.4
|
3.3
|
2.3
|
7.83
|
4.27
|
5.88
|
20.1
|
21.2
|
20.7
|
112.9
|
111.9
|
111.0
|
|
Min.
|
29.05
|
29.45
|
27.63
|
8.16
|
8.59
|
7.64
|
8.33
|
8.56
|
7.61
|
8.00
|
8.00
|
8.18
|
1.6
|
1.0
|
0.7
|
3.00
|
2.00
|
2.00
|
17.6
|
19.8
|
17.4
|
111.0
|
111.0
|
107.0
|
|
Max.
|
31.75
|
33.59
|
33.34
|
10.38
|
13.61
|
13.00
|
10.41
|
13.48
|
13.05
|
8.50
|
9.15
|
9.57
|
8.1
|
4.9
|
5.0
|
20.00
|
9.00
|
12.00
|
22.8
|
22.8
|
23.9
|
115.0
|
113.0
|
114.0
|
|
H1
|
Avg.
|
30.19
|
30.79
|
30.57
|
9.22
|
10.61
|
10.23
|
9.23
|
10.58
|
10.23
|
8.13
|
8.42
|
8.92
|
4.3
|
3.3
|
2.3
|
7.84
|
4.40
|
5.48
|
20.1
|
21.2
|
20.7
|
113.1
|
111.8
|
110.9
|
|
Min.
|
29.06
|
29.42
|
27.40
|
7.76
|
8.57
|
7.62
|
7.97
|
8.59
|
7.67
|
8.00
|
8.00
|
8.26
|
2.0
|
1.2
|
1.1
|
4.00
|
2.00
|
2.00
|
17.6
|
19.8
|
17.2
|
111.0
|
110.0
|
106.0
|
|
Max.
|
31.77
|
33.84
|
33.43
|
10.40
|
14.07
|
13.01
|
10.28
|
13.61
|
12.80
|
8.50
|
9.17
|
9.50
|
8.2
|
4.8
|
4.9
|
16.00
|
10.00
|
12.00
|
22.8
|
22.8
|
23.9
|
115.0
|
114.0
|
114.0
|
|
M1
|
Avg.
|
30.18
|
30.71
|
30.38
|
9.22
|
10.61
|
10.45
|
9.23
|
10.61
|
10.42
|
8.14
|
8.42
|
8.91
|
4.3
|
3.3
|
2.2
|
8.26
|
4.66
|
6.32
|
20.1
|
21.2
|
20.7
|
113.0
|
111.9
|
110.5
|
|
Min.
|
29.04
|
29.42
|
27.44
|
8.08
|
8.55
|
7.60
|
8.08
|
8.60
|
7.90
|
8.00
|
8.00
|
8.13
|
2.0
|
1.0
|
1.0
|
3.00
|
2.00
|
2.00
|
17.6
|
19.8
|
17.2
|
110.0
|
110.0
|
82.0
|
|
Max.
|
31.79
|
33.71
|
32.72
|
10.34
|
13.82
|
13.25
|
10.32
|
13.29
|
12.99
|
8.50
|
9.13
|
9.53
|
7.9
|
5.1
|
4.9
|
19.00
|
15.00
|
11.00
|
22.8
|
22.8
|
23.9
|
115.0
|
113.0
|
114.0
|
|
S1
|
Avg.
|
30.11
|
30.56
|
30.56
|
9.16
|
10.97
|
10.97
|
9.17
|
10.94
|
10.94
|
8.15
|
8.23
|
8.23
|
4.3
|
3.1
|
3.1
|
6.85
|
4.63
|
4.63
|
20.1
|
21.6
|
21.6
|
113.0
|
111.9
|
111.9
|
|
Min.
|
29.18
|
29.71
|
29.71
|
7.90
|
10.06
|
10.06
|
7.87
|
10.22
|
10.22
|
8.00
|
8.01
|
8.01
|
1.7
|
1.1
|
1.1
|
2.00
|
2.00
|
2.00
|
17.6
|
20.6
|
20.6
|
110.0
|
111.0
|
111.0
|
|
Max.
|
31.69
|
31.79
|
31.79
|
10.24
|
11.96
|
11.96
|
10.31
|
11.65
|
11.65
|
8.48
|
8.46
|
8.46
|
8.5
|
4.0
|
4.0
|
14.00
|
10.00
|
10.00
|
22.8
|
22.7
|
22.7
|
116.0
|
113.0
|
113.0
|
|
S2
|
Avg.
|
30.20
|
30.66
|
30.51
|
9.27
|
10.85
|
11.38
|
9.28
|
10.92
|
11.35
|
8.14
|
8.27
|
8.87
|
4.3
|
3.1
|
2.5
|
7.02
|
5.31
|
5.72
|
20.1
|
21.6
|
21.2
|
113.0
|
111.9
|
110.9
|
|
Min.
|
29.06
|
29.73
|
27.57
|
7.99
|
9.88
|
9.80
|
8.09
|
10.20
|
9.64
|
8.00
|
8.03
|
8.34
|
2.1
|
1.2
|
1.4
|
2.00
|
3.00
|
3.00
|
17.6
|
20.6
|
17.2
|
111.0
|
111.0
|
106.0
|
|
Max.
|
31.80
|
31.79
|
33.23
|
10.49
|
11.66
|
13.13
|
10.60
|
11.75
|
13.05
|
8.47
|
8.49
|
9.55
|
8.2
|
4.0
|
3.5
|
16.00
|
9.00
|
11.00
|
22.8
|
22.7
|
23.9
|
116.0
|
114.0
|
114.0
|
|
S3
|
Avg.
|
30.14
|
30.69
|
30.61
|
9.24
|
11.05
|
11.40
|
9.24
|
11.01
|
11.40
|
8.15
|
8.24
|
8.87
|
4.3
|
3.3
|
2.3
|
7.65
|
5.43
|
6.20
|
20.1
|
21.6
|
21.2
|
112.9
|
111.8
|
111.0
|
|
Min.
|
29.02
|
29.82
|
27.32
|
8.15
|
9.99
|
9.39
|
8.24
|
10.01
|
9.71
|
8.00
|
8.02
|
8.34
|
1.7
|
1.2
|
0.4
|
2.00
|
2.00
|
3.00
|
17.6
|
20.6
|
17.2
|
110.0
|
110.0
|
105.0
|
|
Max.
|
31.78
|
31.70
|
33.36
|
10.67
|
12.14
|
13.25
|
10.63
|
12.17
|
13.18
|
8.50
|
8.50
|
9.42
|
8.5
|
3.9
|
3.8
|
18.00
|
9.00
|
11.00
|
22.8
|
22.7
|
23.9
|
115.0
|
113.0
|
114.0
|
Notes:
i.
"Avg",
¡§Min¡¨ and ¡§Max¡¨ is the average, minimum and maximum respectively of the data
from measurements conducted under mid-flood and mid-ebb tides at three water
depths, except that of DO where the data for ¡§Surface & Middle¡¨ and
¡§Bottom¡¨ are calculated separately.
ii.
Table 2.6 Summary of Intensive DCM Impact Water Quality Monitoring Results
|
Locations
|
Parameters
|
|
Salinity
(ppt)
|
Dissolved
Oxygen (mg/L)
|
pH
|
Turbidity
(NTU)
|
Suspended
Solids (mg/L)
|
Temp.
(oC)
|
Total
Alkalinity (mg/L) note ii
|
|
Surface
& Middle
|
Bottom
|
|
UC1
|
Avg.
|
30.68
|
10.11
|
10.08
|
8.60
|
3.4
|
4.51
|
20.7
|
112.6
|
|
Min.
|
29.08
|
7.56
|
7.70
|
8.01
|
1.3
|
2.00
|
17.1
|
109.0
|
|
Max.
|
32.98
|
13.24
|
12.96
|
9.38
|
4.9
|
10.00
|
25.2
|
116.0
|
|
UC2
|
Avg.
|
30.68
|
10.06
|
10.04
|
8.61
|
3.4
|
4.82
|
20.7
|
112.6
|
|
Min.
|
29.13
|
7.58
|
7.67
|
8.00
|
1.3
|
2.00
|
17.1
|
109.0
|
|
Max.
|
32.84
|
13.04
|
12.87
|
9.47
|
5.0
|
10.00
|
25.2
|
116.0
|
|
I1
|
Avg.
|
30.66
|
10.16
|
10.19
|
8.60
|
3.4
|
4.69
|
20.7
|
112.6
|
|
Min.
|
29.06
|
7.56
|
7.79
|
8.00
|
1.3
|
2.00
|
17.1
|
108.0
|
|
Max.
|
32.91
|
13.08
|
12.92
|
9.49
|
5.0
|
10.00
|
25.2
|
117.0
|
|
I2
|
Avg.
|
30.65
|
10.05
|
10.07
|
8.59
|
3.4
|
5.17
|
20.7
|
112.5
|
|
Min.
|
29.02
|
7.64
|
7.57
|
8.00
|
1.7
|
2.00
|
17.1
|
109.0
|
|
Max.
|
33.12
|
13.08
|
13.03
|
9.48
|
5.0
|
14.00
|
25.2
|
117.0
|
|
I3
|
Avg.
|
30.72
|
10.03
|
10.04
|
8.60
|
3.4
|
4.95
|
20.7
|
112.5
|
|
Min.
|
29.04
|
7.65
|
7.57
|
8.00
|
1.0
|
2.00
|
17.1
|
109.0
|
|
Max.
|
32.99
|
13.30
|
13.02
|
9.46
|
4.9
|
16.00
|
25.2
|
116.0
|
|
I4
|
Avg.
|
30.67
|
10.13
|
10.15
|
8.59
|
3.4
|
4.90
|
20.7
|
112.7
|
|
Min.
|
29.07
|
7.57
|
7.96
|
8.00
|
1.8
|
2.00
|
17.1
|
109.0
|
|
Max.
|
32.71
|
12.99
|
13.13
|
9.46
|
5.0
|
9.00
|
25.2
|
116.0
|
|
I5
|
Avg.
|
30.72
|
10.13
|
10.12
|
8.60
|
3.4
|
5.35
|
20.7
|
112.6
|
|
Min.
|
29.03
|
7.84
|
7.59
|
8.00
|
1.0
|
2.00
|
17.1
|
108.0
|
|
Max.
|
33.07
|
13.08
|
12.80
|
9.49
|
5.1
|
14.00
|
25.2
|
116.0
|
|
I6
|
Avg.
|
30.63
|
10.12
|
10.14
|
8.60
|
3.4
|
4.94
|
20.7
|
112.5
|
|
Min.
|
29.06
|
7.55
|
7.74
|
8.00
|
1.2
|
2.00
|
17.2
|
109.0
|
|
Max.
|
33.05
|
13.31
|
12.95
|
9.46
|
5.0
|
12.00
|
25.2
|
116.0
|
|
I7
|
Avg.
|
30.75
|
10.10
|
10.07
|
8.59
|
3.4
|
5.19
|
20.7
|
112.5
|
|
Min.
|
29.10
|
7.58
|
7.73
|
8.00
|
1.5
|
2.00
|
17.1
|
109.0
|
|
Max.
|
33.09
|
13.01
|
12.93
|
9.48
|
4.9
|
10.00
|
25.2
|
115.0
|
|
I8
|
Avg.
|
30.67
|
10.10
|
10.11
|
8.59
|
3.4
|
4.96
|
20.7
|
112.6
|
|
Min.
|
29.06
|
7.59
|
7.76
|
8.00
|
0.9
|
2.00
|
17.2
|
109.0
|
|
Max.
|
33.04
|
12.85
|
13.05
|
9.41
|
5.0
|
11.00
|
25.2
|
116.0
|
|
I9
|
Avg.
|
30.65
|
10.09
|
10.10
|
8.60
|
3.4
|
5.24
|
20.7
|
112.7
|
|
Min.
|
29.02
|
7.71
|
7.77
|
8.00
|
1.5
|
2.00
|
17.1
|
109.0
|
|
Max.
|
33.00
|
12.97
|
12.86
|
9.49
|
4.9
|
16.00
|
25.2
|
116.0
|
|
I10
|
Avg.
|
30.73
|
10.13
|
10.13
|
8.60
|
3.4
|
5.49
|
20.7
|
112.4
|
|
Min.
|
29.11
|
7.65
|
7.79
|
8.00
|
1.1
|
2.00
|
17.1
|
78.0
|
|
Max.
|
33.09
|
13.02
|
12.84
|
9.45
|
5.0
|
13.00
|
25.2
|
116.0
|
2.4.3
Most of the monitoring results for temperature,
turbidity and total alkalinity obtained in the reporting period complied with
their corresponding Action and Limit levels, while
numbers of result for DO and SS triggered their corresponding Action or Limit
Levels, and investigations were conducted accordingly.
For the salinity, pH, DO, turbidity, temperature, SS and total alkalinity,
their trends were fluctuated independent to the site activities and presented
in Appendix C.
2.4.4
No major pollution source and extreme weather
which might affect the results were observed during the impact monitoring.
2.4.5
During the regular DCM impact monitoring period
for January to March 2019, thirty-nine (39) and twenty-four (24) exceedances of
the Action and Limit for SS were recorded respectively. Investigations were conducted,
and results indicated the SS exceedances were not attributable to the Project
works. Details of the exceedance are presented in Section 8.
2.4.6
During the initial intensive DCM impact
monitoring period for 25 February to 10 March 2019, thirty (30) and ninety (90)
exceedances of the Action and Limit for SS were recorded respectively.
Investigations were conducted, and results indicated the SS exceedances were
not attributable to the Project works. Details of the exceedance are presented
in Section 8.
2.4.7
Implemented mitigation measures minimizing the adverse impacts on water are
listed in the implementation schedule given in Appendix B.
3.
Noise Monitoring
3
3.1
Noise
Monitoring Parameters
3.1.1
Impact noise monitoring was conducted weekly in
the reporting period between 0700-1900 on normal weekdays. Additional impact
noise monitoring was conducted weekly in the reporting period between 1900-0700
on all days as well as public holidays and Sundays.
3.1.2
Construction noise level measured in terms of
the A-weighted equivalent continuous sound pressure level (LAeq). Leq 30min was
used as the monitoring parameter for the time period between 0700 and 1900
hours on normal weekdays. Leq 5mins was used as the monitoring parameter for
the time period between 1900 and 0700 as well as public holidays and Sundays. Table
3.1 summarizes the monitoring parameters, frequency and duration of the
impact noise monitoring and additional impact noise monitoring.
Table 3.1 Noise Monitoring Parameters, Time, Frequency and Duration
|
Monitoring
Station
|
Time
|
Duration
|
Parameters
|
|
M1/
N_S1,
M2/
N_S2,
M3/
N_S3
|
Day
time:
0700-1900
hrs
(during
normal weekdays)
|
Once
per week
Leq
5min/Leq 30min (average
of 6 consecutive Leq 5min)
|
Leq,
L10 & L90
|
|
M1/
N_S1,
M2/
N_S2,
M3/
N_S3
|
Evening
time:
1900-2300
hrs (including normal weekdays, also public holidays and Sundays)
|
Once
per week
Leq
5min (3 sets of Leq 5min)
|
Leq,
L10 & L90
|
|
M1/
N_S1,
M2/
N_S2,
M3/
N_S3
|
Night
time:
2300-0700
hrs (including normal weekdays, also public holidays and Sundays)
|
Once
per week
Leq
5min (3 sets of Leq 5min)
|
Leq,
L10 & L90
|
3.2
Noise
Monitoring Locations
3.2.1
Three noise monitoring locations for impact
monitoring and additional impact monitoring at the nearby sensitive receivers
are shown in Figure 3.1
|
|
Figure 3.1 Noise
monitoring locations at SKC
|
3.2.2
M1, M2 and M3 are Shek Kwu Chau Treatment and
Rehabilitation Centre Hostel 1, 2 and 3 respectively of The Society for the Aid
and Rehabilitation of Drug Abusers (SARDA) located at southern part of Shek Kwu
Chau.
3.2.3
Measurement at M1, M2 and M3 were conducted at a
point 1m from the exterior of the sensitive receivers building façade and at a
position 1.2m above the ground. The noise
monitoring stations are summarized in Table 3.2 below.
Table 3.2 Noise Monitoring Location
|
Station
|
NSR
ID in EIA Report
|
Noise
Monitoring Location
|
Type
of sensitive receiver(s)
|
Measurement
Type
|
|
M1
|
N_S1
|
Shek
Kwu Chau Treatment & Rehabilitation Centre Hostel 1
|
Residential
|
Façade
|
|
M2
|
N_S2
|
Shek
Kwu Chau Treatment & Rehabilitation Centre Hostel 2
|
Residential
|
Façade
|
|
M3
|
N_S3
|
Shek
Kwu Chau Treatment & Rehabilitation Centre Hostel 3
|
Residential
|
Façade
|
3.3
Action
and Limit Levels
3.3.1
The Action/Limit Levels in line with the
criteria of Practice Note for Professional Persons (ProPECC PN 2/93) ¡§Noise
from Construction Activities ¡V Non-statutory Controls¡¨ and Technical Memorandum
on Environmental Impact Assessment Process issued by HKSAR Environmental
Protection Department [¡§EPD¡¨] under the Environmental Impact Assessment
Ordinance, Cap 499, S.16 is presented in Table 3.3.
Table 3.3 Action and Limit Levels for Noise per
Updated EM&A Manual
|
Time
Period
|
Action
|
Limit
(dB(A))
|
|
0700-1900
hrs on normal weekdays
|
When one
documented complaint is received
|
75 dB(A)
|
Notes: If works are to be carried out during
restricted hours, the conditions stipulated in the Construction Noise Permit
(CNP) issued by the Noise Control Authority have to be followed.
3.4
Monitoring
Results and Observations
3.4.1
Impact monitoring for noise impact was conducted
in the reporting period. The impact noise levels at Noise Monitoring Stations
at SKC (i.e. M1/ N_S1 to M3/ N_S3) are summarized in Table 3.5.
Additional impact monitoring during restricted hours was conducted in the
reporting period. The additional impact noise levels at Noise Monitoring
Stations at SKC (i.e. M1/ N_S1 to M3/ N_S3) are summarized in Table 3.6 and
Table 3.7 respectively. Trending of the noise monitoring
results is presented graphically in Appendix D.
3.4.2
Major construction activity, major noise source
and extreme weather which might affect the results were recorded during the
impact monitoring.
3.4.3
According to our field observations, the major
noise source identified at the designated noise monitoring station in the
reporting month are summarised in Table 3.4:
Table 3.4 Summary of Field Observation
|
Monitoring Station
|
Major Noise Source
|
|
M1
|
Nil
|
|
M2
|
Nil
|
|
M3
|
Air-conditioning
units nearby
|
3.4.4
No data from impact
monitoring during daytime has exceeded the stipulated limit level at 75 dB(A).
Table 3.5 Summary of Impact Noise Monitoring Results during Daytime
|
Location
|
Noise
in dB(A)
|
|
Range
of Leq 30min
|
Range
of L10 5min
|
Range
of L90 5min
|
|
Jan
|
Feb
|
Mar
|
Jan
|
Feb
|
Mar
|
Jan
|
Feb
|
Mar
|
|
M1
|
53.2
¡V 51.4
|
52.6
¡V 56.0
|
53.7
¡V 54.9
|
51.5
¡V 55.1
|
53.0
¡V 59.3
|
53.7
¡V 57.3
|
46.5
¡V 49.5
|
53.1
¡V 49.8
|
50.6
¡V 54.6
|
|
M2
|
55.0
¡V 55.9
|
54.6
¡V 58.2
|
55.1
¡V 56.5
|
56.2
¡V 62.6
|
55.0
¡V 63.3
|
55.4
¡V 58.9
|
50.9
¡V 55.7
|
50.5
¡V 55.9
|
51.2
¡V 55.6
|
|
M3
|
52.4
¡V 53.4
|
51.8
¡V 71.9
|
54.8
¡V 56.0
|
53.7
¡V 56.4
|
53.4
¡V 82.2
|
54.6
¡V 58.4
|
49.3
¡V 52.4
|
48.5
¡V 57.6
|
50.8
¡V 54.6
|
3.4.5
Applicable mitigation
measures for construction works are fully implemented as shown in Appendix B,
where double-glazed windows and air conditioning system were also installed and
confirmed operable for the NSRs (N_S1, N_S2 & N_S3).
3.4.6
During the noise monitoring
event, frontline staffs of ET have inquired the treatment centre users on any
noise disturbance from the construction activities at evening and night time,
where no complaint and adverse opinions was received.
3.4.7
Data from impact monitoring
during evening time and night time were compared with the NCO criteria. Where
site inspection and auditing on Contractor¡¦s record have shown that the
conditions stipulated in the Construction Noise Permit (CNP) issued by the Noise
Control Authority for construction works during restricted hours were followed.
No inappropriate practice were spotted during evening time and night time
construction works, thus the stipulated requirement on noise impact control
during night time and evening time was achieved.
Table 3.6 Summary of the Additional Impact
Noise Monitoring Results during Evening Time
|
Location
|
Noise
in dB(A)
|
|
Range
of Leq 5min
|
Range
of L10 5min
|
Range
of L90 5min
|
|
Jan
|
Feb
|
Mar
|
Jan
|
Feb
|
Mar
|
Jan
|
Feb
|
Mar
|
|
M1
|
NA
|
NA
|
55.0
¡V55.4
|
NA
|
NA
|
56.9
¡V57.3
|
NA
|
NA
|
53.6
¡V54.2
|
|
M2NOTE 1
|
NA
|
NA
|
NA
|
NA
|
NA
|
NA
|
NA
|
NA
|
NA
|
|
M3
|
NA
|
NA
|
53.0
¡V 54.7
|
NA
|
NA
|
54.8
¡V 56.6
|
NA
|
NA
|
52.3
¡V 53.3
|
Note1: An unexpected failure happened for the sound level
meter on monitoring station M2.
Table 3.7 Summary of Additional Impact
Noise Monitoring Results during Night Time
|
Location
|
Noise
in dB(A)
|
|
Range
of Leq 5min
|
Range
of L10 5min
|
Range
of L90 5min
|
|
Jan
|
Feb
|
Mar
|
Jan
|
Feb
|
Mar
|
Jan
|
Feb
|
Mar
|
|
M1
|
NA
|
NA
|
55.0
¡V 55.8
|
NA
|
NA
|
55.3
¡V 57.4
|
NA
|
NA
|
52.4
¡V 54.8
|
|
M2NOTE 1
|
NA
|
NA
|
NA
|
NA
|
NA
|
NA
|
NA
|
NA
|
NA
|
|
M3
|
NA
|
NA
|
53.3
¡V 53.9
|
NA
|
NA
|
55.3
¡V 55.6
|
NA
|
NA
|
52.4
¡V 53.1
|
Note1: An unexpected failure happened for the sound level
meter on monitoring station M2.
Table 4.1 Quantities of Waste Generated from the Project
|
Reporting Month
|
Actual
Quantities of Inert C&D Materials Generated Monthly
|
Actual
Quantities of C&D Wastes Generated Monthly
|
|
Total
Quantity Generated
|
Hard
Rock and Large Broken Concrete (see Note 1)
|
Reused
in the Contract
|
Reused
in other Projects
|
Disposed
as Public Fill
|
Imported
Fill
|
Metals
|
Paper
/ cardboard packaging
|
Plastics
(see Note 2)
|
Chemical
Waste
|
Others,
e.g. general refuse (see Note 3)
|
|
Sand
|
Public
Fill
|
Rock
|
|
(in
,000m3)
|
(in
,000m3)
|
(in
,000m3)
|
(in
,000m3)
|
(in
,000m3)
|
(in
,000m3)
|
(in
,000kg)
|
(in
,000kg)
|
(in
,000kg)
|
(in
,000kg)
|
(in
,000L)
|
(in
,000m3)
|
|
January
2019
|
0
|
0
|
0
|
0
|
0
|
82.6139
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0.0065
|
|
February
2019
|
0
|
0
|
0
|
0
|
0
|
46.7821
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
March
2019
|
0
|
0
|
0
|
0
|
0
|
97.1
|
0
|
0.7552
|
0
|
0.256
|
0
|
0
|
0
|
0
|
Notes:
1.
Broken concrete for
recycling into aggregates.
2.
Plastic refer to
plastic bottles / containers, plastic sheets / foam from packaging materials.
3.
Use the conversion
factor: 1 full load of dumping truck being equivalent to 6.5m3 by
volume.
4.4
Although
there is not much waste generation in the reporting period from the Project,
the Contractor is reminded to sort and store any solid and liquid waste on-site
properly prior to disposal.
5.
Coral
5
5.1
Coral
Monitoring Parameters
5.1.1
Ten (10) tagged coral colonies at each site of
suggested control site and indirect impact site are being monitored weekly for
the first month and followed by monthly monitoring for three months. The
selected Control Site is located at Yuen Kong Chau of Soko Islands about 7 km
away from the project area. After the hitting of super typhoon Mangkhut in
mid-September 2018, the coral re-tagging activities at indirect impact site and
control site were conducted in November and December 2018 respectively. Tagged
coral colonies at the proposed recipient site are being monitored quarterly for
one year. The selected recipient site R3 is located the opposite side of the
Project area at about 2 km away.
5.1.2
Monitoring recorded the following parameters
(using the same methodology adopted during the pre-translocation survey); the
size, presence, health conditions (percentage of mortality/bleaching) and
percentage of sediment of each trans-located coral colony. The general environmental
conditions including weather, sea, and tidal conditions of survey sites were
monitored.
5.1.3
Health status of coral was assessed by the following criteria:
Hard coral: Percentage of surface
area exhibiting partial mortality and blanched/bleached area of each coral
colony and degree of sedimentation.
5.2
Coral
Monitoring Locations
Location of
the ten tagged coral colonies at each of the proposed indirect impact site,
control site, the recipient site R3 and REA transect at proposed indirect
impact site are shown in Figure 5.1, Figure 5.2 and Figure 5.3
respectively:
|
|
|
Figure 5.1 Tagged Natural Corals at Indirect
Impact Site Near SKC for re-tagging after typhoon
Mangkhut
|
|
|
|
Figure 5.2 Tagged
Natural Corals at Control Site Near Yuen Kong Chau for re-tagging after
typhoon Mangkhut
|
|
|
|
Figure 5.3 Tagged Translocation Corals at
Recipient Site R3 near SKC
|
5.2.1
The GPS coordinates of the tagged coral colonies
and retagged coral colonies at both indirect impact site, control site and
recipient site R3 were shown in Table 5.1, Table 5.2 and Table
5.3 respectively.
Table 5.1 Tagged Natural Corals during Baseline and
Re-tagged Natural Corals after Typhoon Manghkut at
Control Site near Yuen Long Chau
|
Coral
# note i
|
GPS Coordinates
|
|
1
|
N22¢X09¡¦45.96¡¨
|
E113¢X54¡¦57.81¡¨
|
|
2R
|
N22¢X11¡¦29.12¡¨
|
E113¢X59¡¦09.01¡¨
|
|
3
|
N22¢X09¡¦45.81¡¨
|
E113¢X54¡¦57.78¡¨
|
|
4
|
N22¢X09¡¦45.70¡¨
|
E113¢X54¡¦57.95¡¨
|
|
5R
|
N22¢X11¡¦29.10¡¨
|
E113¢X59¡¦09.18¡¨
|
|
6
|
N22¢X09¡¦45.75¡¨
|
E113¢X54¡¦58.02¡¨
|
|
7R
|
N22¢X11¡¦29.17¡¨
|
E113¢X59¡¦08.86¡¨
|
|
7
|
N22¢X09¡¦45.65¡¨
|
E113¢X54¡¦57.94¡¨
|
|
8
|
N22¢X09¡¦45.53¡¨
|
E113¢X54¡¦57.90¡¨
|
|
9
|
N22¢X09¡¦46.23¡¨
|
E113¢X54¡¦54.70¡¨
|
|
10R
|
N22¢X11¡¦29.18¡¨
|
E113¢X59¡¦08.91¡¨
|
Notes:
i.
The
re-tagged corals were marked as ##R.
Table 5.2 Re-tagged Natural Corals after Typhoon
Manghkut at Indirect Impact Site near SKC
|
Coral
# note i
|
GPS Coordinates
|
|
11R
|
N22¢X11¡¦29.14¡¨
|
E113¢X59¡¦08.92¡¨
|
|
12R
|
N22¢X11¡¦29.12¡¨
|
E113¢X59¡¦09.01¡¨
|
|
13R
|
N22¢X11¡¦29.11¡¨
|
E113¢X59¡¦09.07¡¨
|
|
14R
|
N22¢X11¡¦29.13¡¨
|
E113¢X59¡¦09.12¡¨
|
|
15R
|
N22¢X11¡¦29.10¡¨
|
E113¢X59¡¦09.18¡¨
|
|
16R
|
N22¢X11¡¦29.07¡¨
|
E113¢X59¡¦09.23¡¨
|
|
17R
|
N22¢X11¡¦29.17¡¨
|
E113¢X59¡¦08.86¡¨
|
|
18R
|
N22¢X11¡¦29.14¡¨
|
E113¢X59¡¦08.94¡¨
|
|
19R
|
N22¢X11¡¦29.20¡¨
|
E113¢X59¡¦08.81¡¨
|
|
20R
|
N22¢X11¡¦29.18¡¨
|
E113¢X59¡¦08.91¡¨
|
Notes:
i.
The
re-tagged corals were marked as ##R.
Table 5.3 GPS Coordinates of Recipient Site
R3
|
Site
|
GPS Coordinates
|
|
R3
|
N22¢X11¡¦43.69¡¨
|
E113¢X28.99¡¨
|
5.3
Action
and Limit Levels
5.3.1
Monitoring result was reviewed and compared
against the below Action Level and Limit Level (AL/LL) as set with the below Table
5.4 and Table 5.5.
Table 5.4 Action and Limit
Levels for Construction Phase Coral Monitoring
|
Parameter
|
Action
Level
|
Limit
Level
|
|
Mortality
|
If during
Impact Monitoring a 15% increase in the percentage of partial mortality on
the corals occurs at more than 20% of the tagged indirect impact site coral
colonies that is not recorded on the tagged corals at the control site, then
the Action Level is exceeded.
|
If during
Impact Monitoring a 25% increase in the percentage of partial mortality on
the corals occurs at more than 20% of the tagged indirect impact site coral
colonies that is not recorded on the tagged corals at the control site, then
the Limit Level is exceeded.
|
Table 5.5 Action and Limit
Levels for Post-Translocation Coral Monitoring
|
Parameter
|
Action
Level
|
Limit
Level
|
|
Mortality
|
If during
Post-Translocation Monitoring a 15% increase in the percentage of partial
mortality on the corals occurs at more than 20% of the translocated coral
colonies that is not recorded on the original corals in the recipient site,
then the Action Level is exceeded.
|
If during
Post-Translocation Monitoring a 25% increase in the percentage of partial
mortality on the corals occurs at more than 20% of the translocated coral
colonies that is not recorded on the original corals in the recipient site,
then the Limit Level is exceeded.
|
5.4
Monitoring
Results and Observations
5.4.1
After the re-tagging activities were finished at
both Control site and Indirect Impact site (Figure 5.1 and 5.2
respectively), the additional monthly monitoring after coral re-tagging due to
the hitting of super typhoon Mangkhut in mid-September 2018 was conducted on 10
January 2019; and the weather condition was summarized in Table 5.6.
Table 5.6 Weather
Condition for the Additional Monthly Post Re-Tagging Monitoring at Control
Site and Indirect Impact Site
|
Date
|
Condition
|
Average Underwater
Visibility
|
|
10 January 2019
|
-
Northeast
force 4 to 5,
-
Sunny period
|
Less than 0.5m
|
5.4.2
Ten (10) hard coral colonies were monitored at
each site of Control and Indirect Impact sites as suggested in the Construction
Phase Monitoring Plan. The general health conditions (size, mortality,
bleaching and sediment) were recorded and summarized in Table 5.9 and Table
5.10. Photos of each tagged coral colonies were taken during the monitoring
activities and shown in Appendix F.
5.4.3
The 1st quarterly coral monitoring
during construction phase at both Indirect Impact Site and Control Site was
conducted on 28 March 2019 and the weather condition was summarized in Table
5.7.
Table 5.7 Weather Condition for the 1st
Quarterly Coral Monitoring during Construction Phase at both Indirect Impact
Site and Control Site
|
Date
|
Condition
|
Average Underwater
Visibility
|
|
28 March 2019
|
-
Northeast
force 3
-
Sunny period
|
Less than 0.5m
|
5.4.4
Ten (10) hard coral colonies were monitored at
each Control site and Indirect Impact Site as suggested in the Construction
Phase Monitoring Plan. The general health conditions (size, mortality,
bleaching and sediment) were recorded and summarized in Table 5.11 and Table
5.12. Photos of each coral colonies were taken during the monitoring
activities shown in Appendix F.
5.4.5
The 4th Post-Translocation Monitoring
was conducted on 28 March 2019 for the Recipient Site R3 (Figure 5.3)
and the weather conditions were summarized in Table 5.8. Seven (7)
translocated and nine (9) natural hard coral colonies were remained to monitor
after the typhoon Mangkhut in mid-September 2018. The general health conditions
(size, condition, mortality, bleaching and sediment) at Recipient Site were
recorded and summarized in Table 5.11 and Table 5.12
respectively. Photos of each tagged corals colonies were taken and shown in Appendix
F.
Table 5.8 Weather Condition for the 4th
Post-Translocation Monitoring during Construction Phase at Recipient Site R3
|
Date
|
Condition
|
Average Underwater
Visibility
|
|
28 March 2019
|
-
Northeast
force 3
-
Sunny period
|
Less than 0.5m
|
Table 5.9 Sizes, Condition,
Mortality, Bleaching and Sediment of 10 Natural Coral Colonies at Control Site of
Additional Monthly
Post-Re-tagging Monitoring (10 Jan 2019) and 1st
Quarterly Coral Monitoring (28 Mar 2019) during 7th to 9th Months Construction Phase
Monitoring
|
Coral #
|
Species
|
Size (cm) ¡V Max. Diameter
|
Condition
|
Mortality (%)
|
Bleaching (%)
|
Sediment (%)
|
|
Baseline
(26 Jun 2018 & 3
Dec 2018)
|
10 Jan 2019
|
28 Mar 2019
|
Baseline
(26 Jun 2018 & 3
Dec 2018)
|
10 Jan 2019
|
28 Mar 2019
|
Baseline
(26 Jun 2018 & 3
Dec 2018)
|
10 Jan 2019
|
28 Mar 2019
|
|
1
|
Goniopora stutchburyi
|
25
|
Fair
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
2R
|
Goniopora
stutchburyi
|
10
|
Good
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
3
|
Psammocora superficialis
|
18
|
Fair
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
4
|
Turbinaria peltata
|
13
|
Good
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
5R
|
Goniopora
stutchburyi
|
18
|
Good
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
6
|
Cyphastrea serailia
|
43
|
Fair
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
7R
|
Coscinaraea sp.
|
15
|
Good
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
8
|
Goniopora stutchburyi
|
21
|
Good
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
9
|
Goniopora stutchburyi
|
11
|
Fair
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
10R
|
Goniopora
stutchburyi
|
20
|
Good
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
Notes:
i.
The
re-tagged corals were marked as ##R.
Table 5.10 Sizes, Condition,
Mortality, Bleaching and Sediment of 10 Natural Coral Colonies at Indirect
Impact Site of Additional Monthly Post-Re-tagging Monitoring (10 Jan) and 1st
Quarterly Coral Monitoring (28 Mar) during 7th to 9th Months Construction Phase
Monitoring
|
Coral #
|
Species
|
Size (cm) ¡V Max. Diameter
|
Condition
|
Mortality (%)
|
Bleaching (%)
|
Sediment (%)
|
|
Baseline
(23 Nov 2018)
|
10 Jan 2019
|
28 Mar 2019
|
Baseline
(23 Nov 2018)
|
10 Jan 2019
|
28 Mar 2019
|
Baseline
(23 Nov 2018)
|
10 Jan 2019
|
28 Mar 2019
|
|
11R
|
Cyphastrea serailia
|
48
|
Good
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
12R
|
Favites
chinensis
|
27
|
Good
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
13R
|
Turbinaria
peltata
|
21
|
Good
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
14R
|
Favites chinensis
|
8
|
Good
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
15R
|
Goniopora
stutchburyi
|
11
|
Good
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
16R
|
Psammocora superficialis
|
27
|
Good
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
17R
|
Favites
chinensis
|
15
|
Good
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
18R
|
Psammocora superficialis
|
39
|
Good
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
19R
|
Psammocora superficialis
|
42
|
Good
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
20R
|
Psammocora
superficialis
|
29
|
Good
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
Notes:
i.
The
re-tagged corals were marked as ##R.
Table 5.11 Sizes,
Condition, Mortality, Bleaching and Sediment of 7 Translocated Coral Colonies
at Recipient Site for all Post-Translocation Coral Monitoring
|
Coral
#
|
Species
|
Size
(cm) ¡V Max. Diameter/
Height
|
Mortality
(%)
|
Bleaching
(%)
|
Sediment
(%)
|
|
Baseline
23 & 24 Mar 18
|
1st
26 Jun 18
|
2nd
20 Sep 18
|
3rd
03 Dec 18
|
4th
28 Mar 19
|
Baseline
23 & 24 Mar 18
|
1st
26 Jun 18
|
2nd
20 Sep 18
|
3rd
03 Dec 18
|
4th
28 Mar 19
|
Baseline
23 & 24 Mar 18
|
1st
26 Jun 18
|
2nd
20 Sep 18
|
3rd
03 Dec 18
|
4th
28 Mar 19
|
|
1
|
Psammocora
superficialis
|
35
|
0
|
0
|
15**
|
15**
|
15**
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
2
|
Psammocora
superficialis
|
N/A
|
0
|
0
|
N/A
|
N/A
|
N/A
|
0
|
0
|
N/A
|
N/A
|
N/A
|
0
|
0
|
N/A
|
N/A
|
N/A
|
|
3
|
Psammocora
superficialis
|
N/A
|
0
|
0
|
N/A
|
N/A
|
N/A
|
0
|
0
|
N/A
|
N/A
|
N/A
|
0
|
0
|
N/A
|
N/A
|
N/A
|
|
4
|
Turbinaria peltata
|
9
|
0
|
0
|
10**
|
10**
|
10**
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
5
|
Goniopora
stutchburyi
|
N/A
|
0
|
0
|
N/A
|
N/A
|
N/A
|
0
|
0
|
N/A
|
N/A
|
N/A
|
0
|
0
|
N/A
|
N/A
|
N/A
|
|
6
|
Psammocora
superficialis
|
26
|
0
|
0
|
15**
|
15**
|
15**
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
7
|
Psammocora
superficialis
|
23
|
0
|
0
|
5**
|
5**
|
5**
|
0
|
0
|
0
|
0
|
0
|
5
|
0
|
0
|
0
|
0
|
|
8
|
Psammocora
superficialis
|
N/A
|
0
|
0
|
