EXECUTIVE SUMMARY
This is the 127th monthly Environmental
Monitoring and Audit (EM&A) report for the Project “Operation of Lamma Power Station Extension” prepared by the
Environmental Team (ET). This report presents the results of impact monitoring on air quality,
noise, water quality and environmental audit for the operation of the said project in April 2017.
Air quality,
noise and water quality monitoring were performed.
The results were checked against the established Action/Limit
(AL) levels. The implementation status of the environmental
mitigation measures, Event/Action
Plan and environmental complaint handling procedures were also checked.
Plant
Availability
Unit
L9 was fully available in the reporting month.
Environmental
Monitoring Works
Environmental monitoring works, as mentioned in the EM&A Manual (Operational
phase), were performed during the operation of Lamma Power Station
Extension in the
reporting period.
Air Quality
No exceedance
of Action and Limit levels for
stack NOx was recorded in the reporting month.
Noise
No exceedance of Action and Limit levels for noise was recorded in the reporting month.
Water Quality
No exceedance of Action and Limit levels for water quality was recorded in the reporting month.
Implementation
Status of Environmental Mitigation Measures
Environmental
mitigation measures were implemented in the reporting month.
Environmental
Complaints
No complaint against the Project was received in the reporting month.
Future Key Issues
Key issues to be considered in the coming month include:
Air Impact
·
To continuously monitor the stack NOx for
Lamma Power Station Extension.
Noise Impact
·
To continuously monitor the noise for Lamma Power Station Extension.
Water Impact
·
To continuously carry out the water quality
monitoring for Lamma Power Station Extension.
Concluding Remarks
The
environmental performance of the project was generally satisfactory.
1.
INTRODUCTION
The operational phase Lamma Power Station Extension commenced in mid October 2006 following the completion of erection works
and commissioning tests for Unit L9. The
Environmental Team (hereinafter called the “ET”) was formed within The Hongkong
Electric Co., Ltd. (HK Electric) to undertake
Environmental Monitoring and Audit for “Operation of Lamma
Power Station Extension” (hereinafter called the “Project”). Under the requirements of Section 6 of
Environmental Permit EP-071/2000/C, an EM&A programme for impact
environmental monitoring set out in the EM&A Manual (Operational Phase) is
required to be implemented. In
accordance with the EM&A Manual, environmental monitoring of air quality,
noise and water quality are required for the Project.
This report summarizes the
environmental monitoring and audit work for the Project for the month of April
2017.
1.1
Plant Availability
Unit L9 was fully available
in the reporting month.
1.2
Summary of EM&A Requirements
The EM&A program requires environmental monitoring
for air quality, noise and
water quality. The EM&A monitoring work for air
quality, noise and water quality are described in Sections 2, 3 and 4
respectively.
The following
environmental audits are summarized in Section 5 of the
report:
·
Environmental
monitoring results;
·
The
implementation status of environmental protection and pollution control /
mitigation measures.
The future key issues for the Project will be reported
in Section 6 of this report.
2.
AIR QUALITY
2.1
Monitoring
Requirements
In accordance
with the EM&A Manual (Operational Phase) for Lamma
Extension,
stack NOx is continuously monitored. Stack NOx monitoring data would be checked against
the Action/Limit Levels
stated in the EM&A Manual. The monitoring frequency is shown in Table 2.1 below:
Table 2.1 Air Quality
Monitoring Parameter and Frequency
|
Parameter
|
Frequency
|
|
Hourly Average Stack
NOx
|
Continuous
|
2.2
Summary
of Results and Observations
Monitoring
of stack NOx was conducted during the operation of
Unit L9 in the reporting month. A
monthly summary of monitoring data is shown in Appendix C.
No
Action/Limit Level exceedance on stack NOx was recorded in the reporting month.
3.
NOISE
3.1
Monitoring Requirements
In accordance with the EM&A Manual for Lamma Extension (Operational Phase), continuous noise
monitoring at Ash Lagoon is carried out to calculate the noise
arising from the operation of Lamma Extension at the
critical NSR at Hung Shing Ye. Baseline noise levels are
applied for correction to the noise monitoring data. The data after corrections would be checked against the Limit Levels
specified in the EM&A Manual.
The noise monitoring location is shown in Figure
3.1. The monitoring parameter and frequency are
shown in Table 3.1 below:
Table 3.1 Noise
Monitoring Parameter
and Frequency
|
Parameter
|
Frequency
|
Time Period
|
|
30-min LAeq
|
continuous
|
0700-2300 hrs and 2300-0700 hrs of next day
|
3.2
Summary
of Results and Observations
Continuous noise monitoring was
conducted at the monitoring station at Ash Lagoon. The monitoring results are shown in Appendix D.
No
Action/Limit Level exceedance on noise was recorded
in the reporting month.
Figure 3.1
Location of Noise Monitoring Station
4.
WATER
QUALITY
4.1
Monitoring
Requirements
In accordance with the EM&A Manual for Lamma Extension (Operational Phase), the monitoring
requirements for the EM&A work should strictly follow the discharge licence
for L1-L9 & GT57 issued under the Water Pollution Control Ordinance
(WPCO).
The parameters as stated in Table 4.1 were monitored and checked against
the Action/Limit Levels as given in Appendix B.
Table 4.1 Water Quality
Monitoring Parameters and Frequencies
|
Item
|
Parameters
|
Frequencies
|
|
1
|
Cooling Water Temperature Rise
|
Daily
|
|
2
|
Total Residual Chlorine
|
Bi-weekly
|
|
3
|
Temperature of
Blowdown Effluent
|
At least twice per year
|
|
4
|
Suspended Solids
from Blowdown Effluent
|
At least twice per year
|
|
5
|
Grease
& Oil from Blowdown
Effluent
|
At least twice per year
|
|
6
|
Scum of foam in ambient water
|
Daily
|
4.2
Summary
of Results and Observations
Monitoring
of various parameters as listed in Table 4.1 above was carried out during the operation of Unit L9 in the
reporting month. A monthly summary of the data is
shown in Appendix E.
The data recorded for the monitoring parameters
were all below their corresponding Action/Limit Levels. No Action/Limit level exceedance was
recorded in the reporting month. There
was no foam present within 500 meters of Hung Sing Ye Beach in the reporting
month. Details of the foam observation report are also given in Appendix E.
The effluent
quality was generally satisfactory.
5.
ENVIRONMENTAL
AUDIT
5.1
Review of Environmental Monitoring Procedures
The environmental
monitoring procedures were regularly reviewed by the Environmental Team. No
modification to the existing monitoring procedures was recommended.
5.2
Assessment
of Environmental Monitoring Results
Monitoring results for Air Quality, Noise and Water Quality
The environmental monitoring results for air quality, noise
and water quality in April 2017 presented in Sections 2, 3 and 4 respectively
are summarized in Table 5.1.
Table 5.1 Summary
of Action/Limit
Level Exceedances on Monitoring Parameters
|
Item
|
Parameter Monitored
|
Monitoring Period
|
No. of
Exceedances In
|
Event/Action Plan Implementation Status and Results
|
|
Action Level
|
Limit
Level
|
|
Air
|
|
1
|
Stack NOx
|
01/04/17
30/04/17
|
0
|
0
|
|
|
Noise
|
|
1
|
Noise levels
at the critical NSR at Hung Shing Ye calculated by the noise alarm monitoring
system
|
01/04/17
30/04/17
|
0
|
0
|
|
|
Water
|
|
1
|
Cooling Water Temperature Rise
|
01/04/17
30/04/17
|
0
|
0
|
|
|
2
|
Total Residual Chlorine
|
01/04/17
30/04/17
|
0
|
0
|
|
|
3
|
Temperature of Blowdown
Effluent
|
01/04/17
30/04/17
|
N.A.
|
N.A.*
|
|
|
4
|
Suspended Solids from Blowdown
Effluent
|
01/04/17
30/04/17
|
N.A.
|
N.A.*
|
|
|
5
|
Grease & Oil from Blowdown
Effluent
|
01/04/17
30/04/17
|
N.A.
|
N.A.*
|
|
|
6
|
Inspection of Scum/Foam in ambient water
|
01/04/17
30/04/17
|
0
|
0
|
|
Note: * Monitoring was not scheduled in the reporting month
Land Contamination
There
was no land contamination incident happened in the reporting month.
Waste Management
Waste management
practice was properly implemented for operation of the project as outlined in
the Waste Management Plan for Lamma Power Station
Extension. There was no unacceptable environmental impact on waste management
in the reporting month.
5.3
Implementation Status of Environmental
Mitigation Measures
Mitigation measures detailed in the permits and the EM&A Manual (Operational
Phase) are required to be implemented.
An updated summary of the Environmental Mitigation Implementation Schedule (EMIS) is
presented in Appendix F.
5.4
Implementation Status of Event/Action Plans
The Event/Action Plans for air quality, noise and water
quality extracted from the EM&A Manual (Operational Phase) are presented in
Appendix A.
5.5
Implementation Status of Environmental Complaint
Handling Procedures
In April 2017, no complaint against the Project was
received.
Table 5.2 Environmental
Complaints Received in April
2017
|
Case Reference /
Date, Time Received /
Date, Time Concerned
|
Descriptions
/
Actions
Taken
|
Conclusion /
Status
|
|
Nil
|
N/A
|
N/A
|
Table 5.3 Outstanding
Environmental Complaints Carried Over
|
Case Reference /
Date, Time Received /
Date, Time Concerned
|
Descriptions
/
Actions
Taken
|
Conclusion /
Status
|
|
Nil
|
N/A
|
N/A
|
6.
FUTURE
KEY ISSUES
6.1
Outage
Plan for the coming 3 months
No
major outage plan in the coming three months.
6.2
Key issues for the coming month
Key issues
to be considered in the coming month include:
Air Impact
·
To continuously monitor the stack NOx for
Lamma Power Station Extension.
Noise Impact
·
To continuously monitor the noise for Lamma Power Station Extension.
Water Impact
·
To continuously carry out the water quality
monitoring for Lamma Power Station Extension.
7.
CONCLUSION
Environmental monitoring was performed as required in the reporting month. All monitoring
results were checked and reviewed.
No Action/Limit level exceedance on stack NOx
was recorded in the reporting month
No Action/Limit level exceedance
on noise was recorded in the reporting month.
No
Action/Limit level exceedance on water quality
parameters was recorded in the reporting
month.
Environmental
mitigation measures recommended in the EM&A Manual for the operational
activities were implemented in the reporting month. No complaint against the Project was received in the reporting month.
No prosecution was received for this Project in the reporting period.
The
environmental performance of the
Project was generally satisfactory.
Appendix
A Event/Action
Plans
Table A.1 Event/Action Plan for Air Quality
|
Exceedance
|
ET
Leader
|
IEC
|
Operations Engineer
|
|
Action
Level
|
|
Exceedance of one sample
|
Identify source;
Inform IEC verbally;
Repeat measurement to
confirm finding.
|
Check monitoring data
submitted by ET Leader and advise ET Leader for any finding.
|
Rectify any unacceptable
practice;
Amend any working methods if
appropriate.
|
|
|
|
|
|
|
Exceedance of two or more consecutive
samples
|
Identify source;
Inform IEC verbally;
Repeat measurement to confirm
finding;
Increase monitoring
frequency;
Discuss with Operations
Engineers
on remedial
actions required;
If exceedance
stops, discontinue additional monitoring.
|
Check monitoring data
submitted by ET Leader and advise ET Leader for any finding;
Verify the implementation
of the remedial measures;
|
Discuss with ET Leader
on remedial
actions required;
Implement the agreed remedial
actions.
|
|
Limit level
|
|
Exceedance of one sample
|
Repeat measurement to
confirm finding;
Identify the source(s) of
the impact. Verbally inform IEC and EPD of the exceedance
as soon as practicable;
Discuss with Operations
Engineers
on remedial
actions required;
Increase monitoring
frequency;
Assess the effectiveness of
the remedial actions and keep IEC and EPD informed of the results.
|
Check monitoring data
submitted by ET Leader and advise ET Leader of any finding;
Verify the implementation
of the remedial measures.
|
Take immediate action to
avoid further exceedances;
Discuss with ET Leader
on remedial
actions required;
Implement the agreed remedial
actions.
|
|
|
|
|
|
|
Exceedance of two or more consecutive
samples
|
Identify source;
Identify the source(s) of
the impact. Verbally inform IEC and EPD
of the exceedance as soon as practicable;
Repeat measurement to
confirm finding;
Increase monitoring
frequency;
Carry out analysis on existing
control procedures
to determine possible mitigation to be implemented;
Discuss with Operations
Engineers
on the remedial
actions to be taken;
If exceedance
stops, discontinue additional monitoring.
|
Provide feedback and
advise ET Leader/Operations Engineers on the effectiveness of the remedial actions proposed
by them;
Verify the implementation
of the remedial measures.
|
Take immediate action to
avoid further exceedance;
Discuss with ET Leader
on remedial
actions required;
Implement the agreed remedial
actions;
Check
the suspected defective parts if the problem still does not come under
control.
|
Table A.2 Event/Action Plan for Noise
|
Exceedance
|
ET
Leader
|
IEC
|
Operations
Engineer
|
|
Action Level
|
If the complaint against Lamma
Extension operation is valid, identify the source(s) of the noise and
propose remedial measures if necessary;
|
Verify the implementation
of the remedial measures.
|
Discuss with ET
Leader on remedial actions required;
Implement the agreed remedial actions.
|
|
Limit Level
|
Check monitoring data to confirm findings;
Identify the
source(s) of the impact. If the exceedance is found to be valid and
due to the Lamma Extension
operation,
verbally inform IEC and EPD of the exceedance as
soon as practicable;
Discuss
with Operations Engineers on remedial actions
required.
|
Check monitoring data
submitted by ET Leader and advise ET Leader of any finding;
Verify the
implementation of the remedial measures.
|
Take action to
avoid further exceedance;
Discuss with ET
Leader on the remedial actions required;
Implement the agreed remedial actions.
|
Table A.3 Event/Action Plan for Water Quality
|
Exceedance
|
ET Leader
|
IEC
|
Operations Engineer
|
|
Action Level
|
|
|
Exceedance on one sampling day
|
Identify
source(s) of impact;
Verbally inform
IEC.
|
Check monitoring data submitted by ET Leader and advise ET Leader for
any findings.
|
Rectify
unacceptable practice;
Amend any working methods if appropriate.
|
|
Exceedances on more than
one consecutive sampling day
|
Identify
source(s) of impact;
Verbally inform
IEC;
Repeat in-situ
measurements to confirm findings;
Discuss with Operations
Engineers
on remedial
actions required;
Increase monitoring frequency;
If exceedance stops, discontinue additional
monitoring.
|
Check
monitoring data submitted by ET Leader and advise ET Leader for any finding;
Verify the
implementation of the remedial measures.
|
Discuss with ET Leader on remedial actions required;
Implement the
agreed remedial actions.
|
|
Limit Level
|
|
|
|
|
Exceedance on one
sampling day
|
Identify the
source(s) of impact;
Verbally inform
IEC and EPD of the exceedance, as soon as
practicable;
Repeat
measurement to confirm finding;
Discuss with Operations
Engineers
on remedial
actions required;
Increase
monitoring frequency;
Assess the effectiveness
of the remedial actions and keep IEC and EPD informed of the results.
|
Check
monitoring data submitted by ET Leader and advise ET Leader for any finding;
Verify the
implementation of the remedial measures.
|
Take immediate action
to avoid further exceedance;
Discuss with ET Leader on remedial actions required;
Implement the
agreed remedial actions.
|
|
Exceedances on more than one consecutive sampling day
|
Identify the
source(s) of impact; Verbally inform IEC
and EPD of the exceedance as soon as practicable;
Repeat
measurement to confirm finding;
Discuss with Operations
Engineers
on remedial
actions required;
Increase
monitoring frequency;
Carry out
analysis on existing control procedures to
determine possible mitigation to be implemented;
If exceedance stops, discontinue additional monitoring.
|
Provide
feedback and advise ET Leader/Operations
Engineers on the effectiveness of the remedial
actions proposed;
Verify the
implementation of the remedial measures.
|
Take immediate
action to avoid further exceedance;
Discuss with ET Leader on remedial actions required;
Implement the
agreed remedial actions;
Check the suspected defective parts if the problem still does not come
under control.
|
Appendix B Action and Limit
Levels for Air Quality, Noise and Water Quality Monitoring
B.1 Air
|
Parameter
|
Frequency
|
Action
|
Limit
|
|
Hourly Average Stack NOx (Natural Gas)
|
Continuous
|
81 mg/Nm3
|
90 mg/Nm3
|
|
Hourly Average Stack NOx (Light Oil)
|
Continuous
|
135 mg/Nm3
|
150 mg/Nm3
|
Note: Expressed as at 0ºC,
101.325kPa, dry and corrected to 15% O2 condition.
B.2. Noise
|
Parameter
|
Frequency
|
Action
|
Limit
|
|
Noise Levels at the critical NSR at Hung Shing
Ye
calculated by the noise alarm
monitoring system
|
Continuous
|
When more than one complaint is received
within two weeks, which are concerning the same event or location
|
a. 60 dB(A) in LAeq,30 min (07:00-23:00 hrs)
b. 50 dB(A) in LAeq,30 min (23:00-07:00 hrs
on next day)
|
B.3 Water
|
Monitoring Area / Location
|
Parameters to be Monitored
|
Frequency
|
Concentration Not to Be
Exceeded
|
Action
|
Limit
|
|
Trade Effluent
Cooling Water
|
Temperature
|
Daily, when the combined cycle
unit is operating
|
Temperature at outfall should not exceed that at intake by > 10°C
|
9.5°C
|
+10°C above intake
|
|
Total Residual Chlorine
|
Bi-weekly, when the combined cycle unit is
operating
|
0.5mg/L
|
0.47 mg/L
|
0.5 mg/L
|
|
Trade Effluent Boiler Blowdown
|
Temperature
|
At least twice per year, when
the combined cycle unit is operating
|
40°C
|
-
|
40°C
|
|
Suspended Solids
|
At least twice per year, when
the combined cycle unit is operating
|
30 mg/L
|
-
|
30 mg/L
|
|
Grease & Oil
|
At least twice per year, when
the combined cycle unit is operating
|
20 mg/L
|
-
|
20 mg/L
|
|
Marine waters cooling water
outfall
|
Scum of foam in ambient water
|
Daily, when
the combined cycle unit is operating
|
No scum within 500 m
of Hung Shing Ye Beach
|
When scum passes the station south-west corner and north-west corner
|
No
scum within 500 m of Hung Shing Ye Beach
|
Appendix C Air Quality Monitoring Results
Site: Lamma Power Station – Unit L9
Month: April 2017
Monthly Summary of
Stack NOx
|
Date
|
Daily Maximum Stack NOx concentration (mg/Nm3)#
|
|
1/4/2017
|
63
|
|
2/4/2017
|
66
|
|
3/4/2017
|
62
|
|
4/4/2017
|
59
|
|
5/4/2017
|
55
|
|
6/4/2017
|
52
|
|
7/4/2017
|
51
|
|
8/4/2017
|
53
|
|
9/4/2017
|
52
|
|
10/4/2017
|
51
|
|
11/4/2017
|
52
|
|
12/4/2017
|
62
|
|
13/4/2017
|
64
|
|
14/4/2017
|
62
|
|
15/4/2017
|
58
|
|
16/4/2017
|
56
|
|
17/4/2017
|
55
|
|
18/4/2017
|
53
|
|
19/4/2017
|
52
|
|
20/4/2017
|
52
|
|
21/4/2017
|
53
|
|
22/4/2017
|
63
|
|
23/4/2017
|
63
|
|
24/4/2017
|
62
|
|
25/4/2017
|
57
|
|
26/4/2017
|
56
|
|
27/4/2017
|
60
|
|
28/4/2017
|
62
|
|
29/4/2017
|
61
|
|
30/4/2017
|
61
|
Note: # - Hourly
average value. Expressed
as at 0ºC, 101.325kPa, dry and corrected to 15% O2 condition.
Appendix D Noise
Monitoring Results
Site: Lamma Power
Station Extension
Measurement Location: Ash Lagoon
Measurement
Parameter: 30-min Leq (07:00-23:00
hrs and
23:00-07:00 hrs on next day)
|
Date
|
Time
|
Calculated Noise Level at
NSR at Hung Shing
Ye
(dB(A))
|
Limit
Noise
Level
(dB(A))
|
|
Max
|
Avg
|
|
01/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
01/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
02/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
02/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
03/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
03/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
04/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
04/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
05/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
05/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
06/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
06/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
07/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
07/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
08/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
08/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
09/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
09/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
10/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
10/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
11/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
11/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
12/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
12/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
13/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
13/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
14/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
14/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
15/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
15/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
16/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
16/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
17/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
17/04/2017
|
23:00-07:00
|
30
|
27
|
50
|
|
18/04/2017
|
07:00-23:00
|
54
|
49
|
60
|
|
18/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
19/04/2017
|
07:00-23:00
|
50
|
48
|
60
|
|
19/04/2017
|
23:00-07:00
|
47
|
44
|
50
|
|
20/04/2017
|
07:00-23:00
|
47
|
45
|
60
|
|
20/04/2017
|
23:00-07:00
|
49
|
49
|
50
|
|
21/04/2017
|
07:00-23:00
|
52
|
49
|
60
|
|
21/04/2017
|
23:00-07:00
|
34
|
28
|
50
|
|
22/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
22/04/2017
|
23:00-07:00
|
37
|
31
|
50
|
|
23/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
23/04/2017
|
23:00-07:00
|
41
|
40
|
50
|
|
24/04/2017
|
07:00-23:00
|
53
|
48
|
60
|
|
24/04/2017
|
23:00-07:00
|
49
|
41
|
50
|
|
25/04/2017
|
07:00-23:00
|
50
|
48
|
60
|
|
25/04/2017
|
23:00-07:00
|
32
|
29
|
50
|
|
26/04/2017
|
07:00-23:00
|
42
|
41
|
60
|
|
26/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
27/04/2017
|
07:00-23:00
|
55
|
46
|
60
|
|
27/04/2017
|
23:00-07:00
|
36
|
32
|
50
|
|
28/04/2017
|
07:00-23:00
|
54
|
47
|
60
|
|
28/04/2017
|
23:00-07:00
|
39
|
38
|
50
|
|
29/04/2017
|
07:00-23:00
|
54
|
46
|
60
|
|
29/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
|
30/04/2017
|
07:00-23:00
|
---
|
---
|
60
|
|
30/04/2017
|
23:00-07:00
|
---
|
---
|
50
|
Note: 1. “---“represents the measured noise monitoring data lower
than the established notional background level, particularly for the period of
01/04/2017 07:00 – 17/04/2017 23:00. The
noise monitoring station was in normal operation but there were no data of
calculated noise level at NSR at Hung Shing Ye.
2. Pursuant
to the EM&A Manual (Operational Phase), the corrections for accounting the
differences of barrier attenuations and atmospheric absorption attenuations for
the noise alarm station and noise sensitive receiver are 5 dB(A) and 2 dB(A)
respectively.
Appendix E Summary
Results and Observations on Water Quality Monitoring
Maximum
Outlet Temperature Rise (Deg. Celsius) of Cooling Water at C.W. Outfall No.3
Serving L9 Condensers
Weighted
by Flowrates of Individual Streams (April 2017)
|
Date
|
Maximum
Outlet Temperature Rise
(Deg.
Celsius)
|
|
1/4/2017
|
7.9
|
|
2/4/2017
|
7.9
|
|
3/4/2017
|
7.9
|
|
4/4/2017
|
7.9
|
|
5/4/2017
|
8.0
|
|
6/4/2017
|
8.0
|
|
7/4/2017
|
8.0
|
|
8/4/2017
|
8.1
|
|
9/4/2017
|
8.1
|
|
10/4/2017
|
8.0
|
|
11/4/2017
|
8.1
|
|
12/4/2017
|
7.9
|
|
13/4/2017
|
7.9
|
|
14/4/2017
|
7.9
|
|
15/4/2017
|
8.0
|
|
16/4/2017
|
8.0
|
|
17/4/2017
|
8.0
|
|
18/4/2017
|
7.9
|
|
19/4/2017
|
8.0
|
|
20/4/2017
|
8.0
|
|
21/4/2017
|
8.0
|
|
22/4/2017
|
7.6
|
|
23/4/2017
|
7.8
|
|
24/4/2017
|
7.6
|
|
25/4/2017
|
7.6
|
|
26/4/2017
|
7.6
|
|
27/4/2017
|
7.6
|
|
28/4/2017
|
7.6
|
|
29/4/2017
|
7.6
|
|
30/4/2017
|
7.9
|
Total Residual Chlorine
Level at C.W. Outfall No. 3 (April 2017)
|
Date of sampling
|
13/04/2017
|
28/04/2017
|
|
Total Residual
Chlorine, mg/L
|
0.40
|
0.35
|
Blowdown
from Unit L9 Steam Turbine and HRSG to C.W. Outfall No. 3 (April 2017)
|
Source of discharge
|
HSRG
|
Steam Turbine
|
|
Date of sampling
|
#
|
#
|
|
Suspended Solid, mg/L
|
#
|
#
|
|
Grease & Oil, mg/L
|
#
|
#
|
|
Temperature, Deg. Celsius
|
#
|
#
|
Note: #
Monitoring was not scheduled in the reporting month. The last monitoring was
carried out in March 2017.
Observation of Scum
Formation in Marine Waters Mixing Zone at Lamma Power
Station Extension (April 2017)
|
Date
|
Observation
|
|
1/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station & CW Outfall
|
|
2/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station & CW Outfall
|
|
3/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station & CW Outfall
|
|
4/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station; Some foam outside CW Outfall and defoamer added to Outfalls No.1 & No.2
|
|
5/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station & CW Outfall
|
|
6/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station & CW Outfall
|
|
7/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station; Some foam outside CW Outfall and defoamer added to Outfalls No.1 & No.2
|
|
8/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station & CW Outfall
|
|
9/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station; Some foam outside CW Outfall and defoamer added to Outfalls No.1 & No.2
|
|
10/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station; Some foam outside CW Outfall and defoamer added to Outfalls No.1 & No.2
|
|
11/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station; Some foam outside CW Outfall and defoamer added to Outfalls No.1 & No.2
|
|
12/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station; Some foam outside CW Outfall and defoamer added to Outfalls No.1 & No.2
|
|
13/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station; Some foam outside CW Outfall and defoamer added to Outfalls No.1 & No.2
|
|
14/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station; Some foam outside CW Outfall and defoamer added to Outfalls No.1 & No.2
|
|
15/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station; Some foam outside CW Outfall and defoamer added to Outfalls No.1 & No.2
|
|
16/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station & CW Outfall
|
|
17/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station & CW Outfall
|
|
18/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station; Some foam outside CW Outfall and defoamer added to Outfalls No.1 & No.2
|
|
19/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station; Some foam outside CW Outfall and defoamer added to Outfalls No.1 & No.2
|
|
20/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station; Some foam outside CW Outfall and defoamer added to Outfalls No.1 & No.2
|
|
21/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station; Some foam outside CW Outfall and defoamer added to Outfalls No.1 & No.2
|
|
22/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station; Some foam outside CW Outfall and defoamer added to Outfalls No.1 & No.2
|
|
23/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station; Some foam outside CW Outfall and defoamer added to Outfalls No.1 & No.2
|
|
24/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station & CW Outfall
|
|
25/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station; Some foam outside CW Outfall and defoamer added to Outfalls No.1 & No.2
|
|
26/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station; Some foam outside CW Outfall and defoamer added to Outfalls No.1 & No.2
|
|
27/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station; Some foam outside CW Outfall and defoamer added to Outfalls No.1 & No.2
|
|
28/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station & CW Outfall
|
|
29/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station & CW Outfall
|
|
30/4/2017
|
No scum within 500m of HSY
Beach & NW/SW corner of the Station & CW Outfall
|
Note: The water spraying system at C.W. Outfall No.1 was in service from 4 to 30/4/2017.
Appendix F Summary
of EMIS
|
EM&A Log Ref.
|
Mitigation Measures
|
Implementation Status
|
|
|
Air Quality
|
|
|
A1
|
Implement the gas-fired units as base-load
units. For the existing power station,
the more efficient units incorporating FGD and low NOx
systems shall be operated first under normal situation to meet system
demand. In case of any deviations from
this, EPD shall be notified of the details and circumstances for the
deviation.
|
Complied
|
|
A2
|
HK Electric shall undertake annual revisions and update of its
GHG emissions inventory, which covers all HK Electric existing facilities and new extension, for at least the six GHGs
specified under the Kyoto Protocol (CO2, CH4, N2O, HFCs, PFCs and SF6). The inventory shall be established and
maintained in accordance with the latest IPCC Guidelines or any other
guidelines issued by Government, with details documented for regular reviews
and updates. The inventory shall be reported on an annual basis, including
actual figures and targets for the previous and current years, as well as the
next year's forecast. Discrepancies
for actual versus target figures and actions for improvement or enhancement
shall be discussed. HK Electric shall update the inventory according to the figures
of the electricity load forecast, upon every subsequent review by the
Government. This shall also be
reported in the annual report.
(The annual report of
GHG emissions inventory shall be deposited with the Director of Environmental
Protection within three months after the end of the reporting period.)
|
Complied
|
|
|
|
|
|
|
Water Quality
|
|
|
B1
|
No
further mitigation measures were found to be necessary provided the discharge
of cooling water and residual chlorine are kept below the rates assumed in the
water quality assessment*.
*All
discharges of effluent/wastewater shall be controlled through licensing under
the Technical Memorandum for Effluents Discharged into Drainage and
Sewerage Systems. Inland and Coastal Waters, issued under Section 21 of the
Water Pollution Control Ordinance.
|
Complied
|
|
|
|
|
|
|
Noise
|
|
|
C1
|
HK
Electric
shall implement the gas-fired units for based-load
operation to minimize the noise generated from the existing units.
|
Complied
|
|
|
|
|
|
|
Landscape & Visual impacts
|
|
|
D1
|
No mitigation measures were considered necessary.
|
N/A
|
|
|
|
|
|
EM&A Log Ref.
|
Mitigation Measures
|
Implementation Status
|
|
|
LAND CONTAMINATION AND WASTE MANAGEMENT
|
|
|
E1
|
HK Electric shall
maintain records of the following items:
- integrity testing of light oil tanks;
- daily inspection of the light oil tanks and bunded areas;
- quantities of oily waste and sludge generated from oil interceptors
and chemical waste generated from operation of the power station;
- deposal oil oily waste/sludge and chemical waste to licenced site;
- quantities of chemical and chemical waste;
- incident of spillage and remediation actions; and
- emergency response training and
drills.
|
Complied
|
|
|
Marine Ecology
|
|
|
F1
|
No
mitigation measures were considered necessary.
|
N/A
|
|
|
|
|
|
|
fisheries
|
|
|
G1
|
No
mitigation measures were considered necessary.
|
N/A
|
|
|
|
|
|
|
RISK ASSESSMENT
|
|
|
H1
|
No
mitigation measures were considered necessary.
|
N/A
|