EXECUTIVE SUMMARY
This is the ninety-seventh 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 October 2014.
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 October
2014.
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 October 2014 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
|
01/10/14-31/10/14
|
0
|
0
|
|
|
Noise
|
|
1
|
Noise levels at the critical NSR at Hung Shing Ye
calculated by the noise alarm monitoring system
|
01/10/14-31/10/14
|
0
|
0
|
|
|
Water
|
|
1
|
Cooling Water Temperature Rise
|
01/10/14-31/10/14
|
0
|
0
|
|
|
2
|
Total Residual Chlorine
|
01/10/14-31/10/14
|
0
|
0
|
|
|
3
|
Temperature of Blowdown Effluent
|
01/10/14-31/10/14
|
N.A.
|
N.A.*
|
|
|
4
|
Suspended Solids from Blowdown Effluent
|
01/10/14-31/10/14
|
N.A.
|
N.A.*
|
|
|
5
|
Grease & Oil from Blowdown Effluent
|
01/10/14-31/10/14
|
N.A.
|
N.A.*
|
|
|
6
|
Inspection of Scum/Foam in ambient water
|
01/10/14-31/10/14
|
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 October 2014, no complaint against the Project was
received.
Table 5.2 Environmental Complaints Received in October
2014
|
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 for 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 0şC, 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: October
2014
Monthly
Summary of Stack NOx
|
Date
|
Daily Maximum Stack NOx concentration (mg/Nm3)#
|
|
1/10/2014
|
59
|
|
2/10/2014
|
59
|
|
3/10/2014
|
56
|
|
4/10/2014
|
58
|
|
5/10/2014
|
59
|
|
6/10/2014
|
64
|
|
7/10/2014
|
63
|
|
8/10/2014
|
64
|
|
9/10/2014
|
63
|
|
10/10/2014
|
61
|
|
11/10/2014
|
66
|
|
12/10/2014
|
63
|
|
13/10/2014
|
66
|
|
14/10/2014
|
69
|
|
15/10/2014
|
63
|
|
16/10/2014
|
69
|
|
17/10/2014
|
71
|
|
18/10/2014
|
68
|
|
19/10/2014
|
67
|
|
20/10/2014
|
66
|
|
21/10/2014
|
66
|
|
22/10/2014
|
66
|
|
23/10/2014
|
65
|
|
24/10/2014
|
66
|
|
25/10/2014
|
66
|
|
26/10/2014
|
67
|
|
27/10/2014
|
60
|
|
28/10/2014
|
68
|
|
29/10/2014
|
66
|
|
30/10/2014
|
65
|
|
31/10/2014
|
63
|
Note: # - Hourly average value. Expressed as at 0şC, 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
|
|
01/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
01/10/2014
|
23:00-07:00
|
32
|
28
|
50
|
|
02/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
02/10/2014
|
23:00-07:00
|
32
|
29
|
50
|
|
03/10/2014
|
07:00-23:00
|
33
|
32
|
60
|
|
03/10/2014
|
23:00-07:00
|
43
|
38
|
50
|
|
04/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
04/10/2014
|
23:00-07:00
|
---
|
---
|
50
|
|
05/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
05/10/2014
|
23:00-07:00
|
45
|
43
|
50
|
|
06/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
06/10/2014
|
23:00-07:00
|
---
|
---
|
50
|
|
07/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
07/10/2014
|
23:00-07:00
|
30
|
30
|
50
|
|
08/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
08/10/2014
|
23:00-07:00
|
---
|
---
|
50
|
|
09/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
09/10/2014
|
23:00-07:00
|
---
|
---
|
50
|
|
10/10/2014
|
07:00-23:00
|
42
|
42
|
60
|
|
10/10/2014
|
23:00-07:00
|
41
|
38
|
50
|
|
11/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
11/10/2014
|
23:00-07:00
|
28
|
26
|
50
|
|
12/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
12/10/2014
|
23:00-07:00
|
22
|
22
|
50
|
|
13/10/2014
|
07:00-23:00
|
31
|
31
|
60
|
|
13/10/2014
|
23:00-07:00
|
45
|
39
|
50
|
|
14/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
14/10/2014
|
23:00-07:00
|
42
|
37
|
50
|
|
15/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
15/10/2014
|
23:00-07:00
|
45
|
41
|
50
|
|
16/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
16/10/2014
|
23:00-07:00
|
45
|
37
|
50
|
|
17/10/2014
|
07:00-23:00
|
31
|
31
|
60
|
|
17/10/2014
|
23:00-07:00
|
28
|
25
|
50
|
|
18/10/2014
|
07:00-23:00
|
36
|
34
|
60
|
|
18/10/2014
|
23:00-07:00
|
33
|
30
|
50
|
|
19/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
19/10/2014
|
23:00-07:00
|
40
|
36
|
50
|
|
20/10/2014
|
07:00-23:00
|
39
|
39
|
60
|
|
20/10/2014
|
23:00-07:00
|
42
|
39
|
50
|
|
21/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
21/10/2014
|
23:00-07:00
|
43
|
40
|
50
|
|
22/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
22/10/2014
|
23:00-07:00
|
44
|
37
|
50
|
|
23/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
23/10/2014
|
23:00-07:00
|
41
|
35
|
50
|
|
24/10/2014
|
07:00-23:00
|
39
|
39
|
60
|
|
24/10/2014
|
23:00-07:00
|
34
|
30
|
50
|
|
25/10/2014
|
07:00-23:00
|
45
|
45
|
60
|
|
25/10/2014
|
23:00-07:00
|
22
|
22
|
50
|
|
26/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
26/10/2014
|
23:00-07:00
|
42
|
39
|
50
|
|
27/10/2014
|
07:00-23:00
|
40
|
40
|
60
|
|
27/10/2014
|
23:00-07:00
|
41
|
36
|
50
|
|
28/10/2014
|
07:00-23:00
|
38
|
38
|
60
|
|
28/10/2014
|
23:00-07:00
|
41
|
41
|
50
|
|
29/10/2014
|
07:00-23:00
|
28
|
28
|
60
|
|
29/10/2014
|
23:00-07:00
|
36
|
30
|
50
|
|
30/10/2014
|
07:00-23:00
|
---
|
---
|
60
|
|
30/10/2014
|
23:00-07:00
|
42
|
34
|
50
|
|
31/10/2014
|
07:00-23:00
|
33
|
33
|
60
|
|
31/10/2014
|
23:00-07:00
|
32
|
32
|
50
|
Note: 1. “---
“ represents the measured noise monitoring data lower than the established
notional background level/discarded under strong wind.
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 (October 2014)
|
Date
|
Maximum
Outlet Temperature Rise
(Deg.
Celsius)
|
|
1/10/2014
|
8.1
|
|
2/10/2014
|
8.1
|
|
3/10/2014
|
8.1
|
|
4/10/2014
|
8.1
|
|
5/10/2014
|
8.1
|
|
6/10/2014
|
8.1
|
|
7/10/2014
|
8.1
|
|
8/10/2014
|
8.1
|
|
9/10/2014
|
8.1
|
|
10/10/2014
|
8.1
|
|
11/10/2014
|
8.1
|
|
12/10/2014
|
8.1
|
|
13/10/2014
|
8.1
|
|
14/10/2014
|
8.1
|
|
15/10/2014
|
8.1
|
|
16/10/2014
|
8.1
|
|
17/10/2014
|
8.1
|
|
18/10/2014
|
8.1
|
|
19/10/2014
|
8.1
|
|
20/10/2014
|
8.1
|
|
21/10/2014
|
8.1
|
|
22/10/2014
|
8.1
|
|
23/10/2014
|
8.1
|
|
24/10/2014
|
8.0
|
|
25/10/2014
|
8.4
|
|
26/10/2014
|
8.5
|
|
27/10/2014
|
8.5
|
|
28/10/2014
|
8.4
|
|
29/10/2014
|
8.4
|
|
30/10/2014
|
8.4
|
|
31/10/2014
|
8.5
|
Total Residual Chlorine Level at C.W. Outfall No. 3 (October
2014)
|
Date of sampling
|
03/10/2014
|
17/10/2014
|
31/10/2014
|
|
Total
Residual Chlorine, mg/L
|
0.35
|
0.30
|
0.35
|
Blowdown from Unit L9 Steam Turbine and HRSG to C.W.
Outfall No. 3 (October 2014)
|
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 September 2014.
Observation of Scum Formation in Marine Waters Mixing
Zone at Lamma Power Station Extension (October 2014)
|
Date
|
Observation
|
|
1/10/2014
|
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
|
|
2/10/2014
|
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
|
|
3/10/2014
|
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
|
|
4/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
5/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
6/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
7/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
8/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
9/10/2014
|
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
|
|
10/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
11/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
12/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
13/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
14/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
15/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
16/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
17/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
18/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
19/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
20/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
21/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
22/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
23/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
24/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
25/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
26/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
27/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
28/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
29/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
30/10/2014
|
No scum within 500m of HSY
Beach, NW/SW corner of the Station & CW Outfall
|
|
31/10/2014
|
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 in the reporting month.
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
|