Table of Content
1.3 Construction Works undertaken
during the Reporting Month
1.4 Summary of EM&A Requirements
2.4 Monitoring
Parameters, Frequency and Duration
2.5 Monitoring
Procedures and Calibration Details
3.4 Monitoring Parameters, Frequency
and Duration
3.5 Monitoring Procedures
and Calibration Details
4.1 Review of Environmental
Monitoring Procedures
4.2 Assessment
of Environmental Monitoring Results
4.5 Status of Environmental
Licensing and Permitting
4.6 Implementation Status of
Environmental Mitigation Measures
4.7 Implementation Status of
Event/Action Plans
4.8 Implementation Status of
Environmental Complaint Handling Procedures
5.1 Key Issues for the Coming Month
5.2 Monitoring Schedules for the
Next 3 Months
5.3 Construction Program for the
Next 3 Months
List of Tables
Table 1.1........ Construction Activities and Their Corresponding Environmental
Mitigation Measures
Table 2.1........ Air Quality Monitoring Locations
Table 2.2........ Air Quality Monitoring Equipment
Table 2.3........ Air Quality Monitoring Parameter, Duration and Frequency
Table 3.1........ Noise
Monitoring Equipment
Table 3.2........ Noise
Monitoring Duration and Parameter
Table 4.1........ Summary of AL Level
Exceedances on Monitoring Parameters
Table 4.2........ Estimated Amounts of Waste in February 2021
Table 4.3........ Summary of
Environmental Licensing and Permit Status
Table 4.4........ Environmental Complaints Received in February 2021
Table 4.5........ Outstanding Environmental Complaints Carried Over
List of figures
Figure 1.1 Layout of Work
Site
Figure 2.1 Location of Air
Quality Monitoring Stations
Figure 3.1 Location of
Noise Monitoring Stations
Appendices
Appendix B Action and Limit Levels for Air Quality and Noise
Appendix C Environmental Monitoring Schedule
Appendix D Air Quality
Monitoring Results for February 2021
Appendix E Noise Monitoring
Results for February 2021
Appendix F The QA/QC Procedures and Results
Appendix J Tentative
Construction Programme
Appendix K Monthly
Waste Flow Table for February 2021
This is the 130rh monthly Environmental Monitoring and
Audit (EM&A) report for the Project “Construction of Lamma
Power Station Extension” prepared by the Environmental Team (ET). This report presents the results of impact
monitoring on air quality and noise for the said project in February 2021.
The reclamation and submarine
pipeline works were completed with the first gas-fired combined cycle unit
(viz. Unit L9) commissioned in October 2006, working currently on base load
operation. To cope with the scheduled
retirement of the existing units at Lamma Power
Station, the second gas-fired combined cycle unit (viz. Unit L10) L10 was
commissioned for reliable operation in February 2020. The operational EM&A work for L9 and L10
is recorded in the separate monthly EM&A report for the Project “Operation
of Lamma Power Station Extension”.
In September 2016, the
Government approved HK Electric to construct the third combined cycle gas-fired
generating unit (L11) to implement the 2020 Fuel Mix Target. L11 is planned for commercial operation in
2022 and the associated construction work commenced in November 2016.
With the Government’s approval to build the fourth combined cycle gas-fired generating unit (L12) in July 2018, the associated construction work commenced in April 2019. When L12 is commissioned in 2023, the total gas-fired electricity generation will further rise to reach about 70% of our total output.
Air and noise
monitoring were performed. The results were checked
against
the established Action/Limit (AL) levels. An on-site audit was conducted once per week.
The implementation status of the environmental
mitigation measures, Event/Action Plan and environmental
complaint handling procedures were also checked.
Construction
Activities Undertaken
Construction
activities for Lamma Extension during the reporting
month are tabulated as follows:
Item |
Construction
Activities |
Unit L11 Civil and
Building Works |
275kV Station
Building Extension works, Main Station Building external works, jet grouting
works, site formation works and construction of jacking pit |
Unit L11 Mechanical
Erection |
Condenser installation,
HRSG installation and turbine block installation |
Unit L11 Electrical,
Instrumentation & Control Erection |
Cable installation |
Unit L12 Civil and
Building Works |
Construction of
pile cap and erection of tower crane (TC1) and construction of pile cap for
No. 5 Chimney for Main Station Building, construction of pile cap and
erection of tower crane (TC4) for ACB, pipe piling and sheet piling for No. 5
C.W. Intake and pile cap construction preparation for Cable Bridge |
Environmental
Monitoring Works
All monitoring work
at designated stations was performed as scheduled satisfactorily.
Air Quality
No exceedance of Action/Limit levels on 1-hour TSP and 24-hour
TSP for air quality was recorded in the month.
Noise
No exceedance of Action and Limit
levels for
noise arising from the construction of Lamma
Extension was recorded in the month.
Site Environmental Audit
Site audits were carried out on a weekly basis to monitor environmental
issues on the construction site. The
site conditions were generally satisfactory.
Environmental Licensing and
Permitting
Description |
Permit No. |
Valid Period |
Issued To |
Date of Issuance |
|
From |
To |
||||
Varied Environmental Permit |
EP-071/2000/D |
28/09/20 |
- |
HK Electric |
28/09/20 |
Construction Noise Permit |
GW-RS0668-20 |
17/09/20 |
13/03/21 |
Contractor |
15/09/20 |
Construction Noise Permit |
GW-RS0966-20 |
01/01/21 |
30/06/21 |
Contractor |
21/12/20 |
Construction Noise Permit |
GW-RS0039-21 |
01/02/21 |
31/07/21 |
Contractor |
29/01/21 |
Construction Noise Permit |
GW-RS0072-21 |
08/02/21 |
07/08/21 |
Contractor |
05/02/21 |
WPCO Discharge Licence |
WT00034006-2019 |
08/08/19 |
31/08/24 |
Contractor |
22/08/19 |
Registration of Chemical Waste Producer |
WPN5213-912-P2781-22 |
22/02/16 |
- |
Contractor |
22/02/16 |
Registration of Chemical Waste Producer |
WPN5517-912-T2007-02 |
17/03/05 |
- |
Contractor |
17/03/05 |
Waste
Disposal Billing Account |
Account No.:
7031135 |
21/06/18 |
- |
Contractor |
21/06/18 |
Waste
Disposal Billing Account |
Account No.:
7027672 |
24/04/17 |
- |
Contractor |
24/04/17 |
Waste
Disposal Billing Account |
Account No.:
7038672 |
27/10/20 |
- |
Contractor |
27/10/20 |
Implementation
Status of Environmental Mitigation Measures
Environmental mitigation measures for the construction activities
as
recommended in the EM&A manual were implemented in the reporting
month.
Environmental
Complaints
No complaint
against the construction activities was received in the
reporting month.
Future
Key Issues
The future key
issues to be considered in the coming month are as follows:
Unit L11 Civil and
Building Works
-
to continue
monitoring the noise level during construction and to ensure compliance with
the CNP’s already obtained;
-
to continue executing the preventive
measures for avoiding noise exceedance and keep monitoring/ reviewing the
performance;
-
to monitor and review the sufficiency of the dust suppression measures
provided and increase the resources accordingly if necessary;
-
to treat wastewater in sedimentation pit and tanks before
discharge and to ensure compliance with the WPCO discharge licence already
obtained.
Unit L11 Mechanical
Erection
-
to continue
monitoring the noise level during construction and to ensure compliance with
the CNP’s already obtained;
-
to continue executing the preventive measures for avoiding noise
exceedance and keep monitoring/ reviewing the performance;
-
to monitor and review the sufficiency of the dust suppression measures
provided and increase the resources accordingly if necessary.
Unit L11 Electrical,
Instrumentation & Control Erection
-
to continue
monitoring the noise level during construction and to ensure compliance with
the CNP’s already obtained;
-
to continue executing the preventive measures for avoiding noise
exceedance and keep monitoring/ reviewing the performance;
-
to monitor and review the sufficiency of the dust suppression measures
provided and increase the resources accordingly if necessary.
Unit L12 Civil and
Building Works
-
to continue executing the preventive
measures for avoiding noise exceedance and keep monitoring/ reviewing the
performance;
-
to monitor and review the sufficiency of the dust suppression measures
provided and increase the resources accordingly if necessary;
-
to treat wastewater in desilting pits and tanks for reuse on water
spraying;
-
to provide silt curtain as preventive measures
at Northern Cable Bridge area.
Concluding
Remarks
The environmental
performance of the project was generally satisfactory.
The Environmental Team (hereinafter
called the “ET”) was formed within the Hongkong Electric
Co. Ltd (HEC) to undertake
Environmental Monitoring and Audit for “Construction of Lamma Power Station Extension” (hereinafter
called the “Project”). Under the requirements of Section 6 of Environmental Permit EP-071/2000/D, an EM&A programme for impact environmental monitoring set out in the
EM&A Manual (Construction Phase) is required to
be implemented. In accordance with the
EM&A Manual, environmental monitoring of air quality,
noise and water quality
and regular environmental audits are required
for the Project. With the completion of reclamation and submarine pipeline works,
no further marine water quality monitoring would be required.
The Project involves
the construction of a gas-fired power station employing combined cycled gas
turbine technology, forming an extension to the existing Lamma
Power Station. The key elements of the
Project including the construction activities associated with the transmission
system and submarine gas pipeline are outlined as follows.
·
dredging and
reclamation to form approximately 22 hectares of usable area;
·
construction of
six 300MW class gas-fired combined cycle units;
·
construction of a
gas receiving station;
·
construction of a
transmission system linking the Lamma Extension to
load centres on Hong Kong Island;
·
laying of a gas pipeline
for the supply of natural gas to the new power station
This report summarizes the
environmental monitoring and audit work for the Project for the month of
February 2021.
1.2
Project Organisation
An Environmental
Management Committee (EMC) has been set up in HEC to oversee the Project. The management structure includes the
following:
·
Environmental
Protection Department (The Authority);
·
Environmental
Manager (The Chairman of the Environmental Management Committee);
·
Engineer;
·
Independent Environmental
Checker (IEC);
·
Environmental
Team (ET);
·
Contractor.
The project organisation
chart for the construction
EM&A programme is shown in Appendix A.
1.3
Construction
Works undertaken during the Reporting Month
Construction
activities for Unit L11 civil and building works were, 275kV Station Building
Extension works, Main Station Building external works, jet grouting works, site
formation works and construction of jacking pit. Construction activities for
Unit L11 mechanical erection were condenser installation, HRSG installation and
turbine block installation. Construction
activity for Unit L11 electrical, instrumentation & control erection was
cable installation. Construction activities for Unit L12
civil and building works were, construction of pile cap and erection of tower
crane (TC1) and construction of pile cap for No.5 Chimney for Main Station
Building, construction of pile cap and erection of tower crane (TC4) for ACB,
pipe piling and sheeting piling for No. 5 C.W. Intake and pile cap construction
preparation for Cable Bridge. Layout plan for construction site is shown in
Figure 1.1.
The main construction activities carried out during
the reporting month and the corresponding environmental mitigation measures are
summarized in Table 1.1. The implementation of major mitigation
measures in the month is provided in Appendix I.
Table 1.1 Construction Activities and Their Corresponding
Environmental Mitigation Measures
Item |
Construction
Activities |
Environmental Mitigation Measures |
Unit L11 Civil and Building Works
|
||
1. |
275kV Station Building Extension Works |
Air
-
All regulated machine
attached with valid exception/approval NRMM labels. Wastewater
-
Wastewater
should be treated in desilting pit and tanks for reuse on water spraying. Waste Management
-
Scrape metal
would be recycled. -
Timber would be
reused as much as possible. -
Chemical waste
should be collected by licensed collector |
2. |
Main Station Building external works, jet grouting works, site formation works and construction of jacking pit |
Air
-
All regulated
machine attached with valid exception/approval NRMM labels. -
Water truck and
water sprinkler system was used. -
Excavated slope
and soil stock covered with cement or tarpaulin. -
Backfilled
surface was compacted. -
Wheel washing
facility was provided. -
Grout mixer and
cements bags with 3 sides and top covering. Wastewater
- Wastewater should be treated in desilting pit and tanks before discharge. Solution should be added to speed up the sedimentation process. Sediment in pit and tanks must be removed regularly. The frequency would be from every other day to weekly basis depends on the volume of sediment accumulated in order to maintain sufficient volume for wastewater treatment Waste Management
-
Excavated soil
was temporary stored for backfilling. -
Scrape metal
would be recycled. -
Timber would be
reused as much as possible. |
Unit L11 Mechanical Erection
|
||
3. |
Condenser installation HRSG installation Turbine block installation |
Air
-
Dust
suppression measures implemented according to the EMP. Noise
-
General noise mitigation
measures employed at all work sites throughout the construction phase. Waste Management
-
Waste Management Plan submitted and
implemented
|
Unit L11 Electrical, Instrumentation & Control Erection
|
||
4. |
Cable installation |
Air
-
Dust
suppression measures implemented according to the EMP. Noise
-
General noise
mitigation measures employed at all work sites throughout the construction
phase. Waste Management
-
Waste Management Plan submitted and
implemented.
|
Unit L12 Civil
and Building Works
|
||
5. |
Unit L12 Main Station Building Construction of pile cap and erection of tower
crane (TC1) Construction of pile cap for No.5 Chimney ACB Construction of pile cap and erection of tower
crane (TC4) No.5 C.W. Intake Pipe piling and sheet piling |
Air
-
All regulated
machine attached with valid exception/approval NRMM labels. -
Water truck,
misting cannon and water sprinkler system would be used. -
Water spraying
for concrete breaking works. -
Soil stock
would be covered with cement or tarpaulin or keep the entire surface wet. -
Wheel washing
facility would be relocated. -
Used tarpaulin
screening cover for drill rig. Noise
-
Works conducted
during restricted hours should comply with the valid CNP. -
Noise emission
label was provided for air compressor. Wastewater
-
Wastewater
would be treated in desilting pits and tanks for reuse. -
Improvement
works for desilting system. -
Silt curtain
was provided as preventive measures at Northern Cable Bridge area Waste Management
-
Excavated soil was temporary stored for
backfilling and reuse in other projects.
-
Scrape metal
would be recycled. -
Chemical waste
should be collected by licensed collector. |
6. |
Cable Bridge: Pile Cap Construction Preparation |
Air
-
All regulated
machine attached with valid exception/approval NRMM labels. -
Soil stockpile
covered with tarpaulin. -
Water spraying
on haul road and during concrete breaking. Waste Management
-
Excavated soil
would be stored for backfilling. Noise -
Works conducted
during restricted hours should comply with the valid CNP. Wastewater -
Wastewater
would be treated in desilting pits and tanks for reuse |
1.4
Summary of
EM&A Requirements
The detailed EM&A monitoring work for air quality and noise are described
in Sections 2 and 3 respectively. Regular environmental
site audits for air quality,
noise, water quality and waste management
were carried out.
The following
environmental audits are summarized in Section 4 of this report:
·
Environmental
monitoring results;
·
Waste Management
Records;
·
Weekly site audit
results;
·
The status of
environmental licensing and permits for the Project;
·
The
implementation status of environmental protection and pollution control/
mitigation measures.
Future key issues will be reported in Section 5 of
this report.
1-hour and 24-hour TSP monitoring
at agreed frequencies were conducted to monitor air
quality. The
impact monitoring data were checked against the Action/Limit Levels as
determined in the Baseline Monitoring Report (Construction Phase). Appendix B shows the established
Action/Limit Levels for Air Quality.
Three dust monitoring locations were selected for 1-hour TSP sampling
(AM1, AM2 & AM3) while four monitoring locations were selected for 24-hour
TSP sampling (AM1, AM2, AM3 and AM4). Table 2.1 tabulates the monitoring stations. The locations of the monitoring stations are
shown in Figure 2.1.
Table 2.1 Air Quality Monitoring
Locations
Location I.D. |
Description |
AM1 |
Reservoir |
AM2 |
East Gate |
AM3 |
Ash Lagoon |
AM4 |
Tai Yuen Village |
It is agreed with EPD that continuous 24-hour TSP air quality monitoring
would be performed using TEOM continuous dust monitor and the MINIVOL Portable
Sampler at AM1,2&3 and AM4 respectively.
TEOM continuous dust monitors were used to carry out 1-hour TSP
monitoring at AM1, AM2 and AM3. Table 2.2 summarises the equipment used in dust monitoring.
Table 2.2 Air Quality Monitoring
Equipment
Equipment |
Model and Make |
24-hour sampling: Continuous TSP Dust Meter MINIVOL Portable Sampler 1-hour sampling: Continuous TSP Dust Meter |
TEOM continuous dust monitor Thermo Scientific AIRMETRICS TEOM continuous dust monitor Thermo Scientific |
2.4
Monitoring Parameters, Frequency and Duration
Table 2.3 summarises the monitoring parameters, duration
and frequency of air quality monitoring.
The monitoring schedule for the reporting month is shown in Appendix C.
Table 2.3 Air Quality
Monitoring Parameter, Duration and Frequency
Monitoring Stations |
Parameter |
Duration |
Frequency |
AM1 |
1-hour TSP |
1 |
3 hourly samples
every 6 days |
24-hour TSP |
24 |
Once every 6 days |
|
AM2 |
1-hour TSP |
1 |
3 hourly samples
every 6 days |
24-hour TSP |
24 |
Once every 6 days |
|
AM3 |
1-hour TSP |
1 |
3 hourly samples
every 6 days |
24-hour TSP |
24 |
Once every 6 days |
|
AM4 |
24-hour TSP |
24 |
Once every 6 days |
2.5
Monitoring Procedures and Calibration Details
MINIVOL (24- hour TSP Monitoring):
Preparation
of Filter Papers
·
Visual inspection
of filter papers was carried out to ensure that there were no pinholes, tears
and creases;
·
The filter papers
were then labeled before sampling.
·
The filter papers
were equilibrated at room temperature and relative humidity < 50% for at
least 24 hours before weighing.
Field Monitoring
·
During collection
of the sampled filter paper, the information on the elapse timer was
logged. Site observations around the
monitoring stations, which might have affected the monitoring results, were
also recorded. Major pollution sources,
if any, would be identified and reported.
·
The post-sampling
filter papers were removed carefully from the filter holder and folded to avoid
loss of fibres or dust particles from the filter
papers;
·
The filter holder
and its surrounding were cleaned;
·
A pre-weighed
blank filter paper for the next sampling was put in place and aligned
carefully. The filter holder was then
tightened firmly to avoid leakage;
·
The programmable
timer was set for the next 24 hrs sampling
period;
·
The post-sampling
filter papers were equilibrated at room temperature and relative humidity <
50% for at least 24 hours before weighing.
TEOM continuous
dust monitor (24- hour TSP and 1- hour TSP Monitoring):
·
The following
parameters of the TEOM model dust meters are regularly checked to ensure proper
functionality:
o
Operation Mode;
o
Frequency of the
tapered element;
o
Main flow;
o
Bypass flow.
Maintenance
& Calibration
·
The monitoring
equipment and their accessories are maintained in good working conditions.
·
Monitoring equipment
is calibrated at monthly intervals.
Calibration details are shown in Appendix F.
All dust monitoring works were conducted on schedule. All monitoring data and graphical
presentation of the monitoring results are provided in Appendix
D. Key findings and observations are
provided below:
1-hour
TSP
No exceedance of 1-hour TSP Action/Limit Level was recorded in the
month.
24-hour
TSP
No exceedance of 24-hour TSP
Action/Limit Level was recorded in the month.
Continuous noise alarm
monitoring at Ash Lagoon/Ching Lam were carried out to calculate the noise contributed by the construction activities
at the two critical NSR’s, viz. Long Tsai Tsuen/Hung Shing
Ye and the school within the village of Tai Wan San Tsuen. The impact monitoring data for construction
noise were checked against the limit
levels specified in the EM&A Manual. With the
availability of the construction noise permits, impact monitoring for the
construction work during the restricted hours was also carried out. Section 3 presents the details of the
construction noise permits.
The impact noise monitoring data were checked against the limit levels specified in the EM&A Manual. Appendix B shows the established Action/Limit Levels for
noise.
In accordance with the
EM&A manual, the identified noise monitoring locations of Ash Lagoon and
Ching Lam are shown in Figure 3.1.
The sound level meters
used for noise monitoring complied with International Electrotechnical
Commission Publications 651:1979 (Type 1) and 804:1985 (Type 1). The noise monitoring equipment used is shown
in Table 3.1.
Table 3.1 Noise Monitoring Equipment
Equipment |
Model |
Sound
level meters |
B&K 2250 |
Sound level calibrator |
B&K 4231 |
3.4
Monitoring
Parameters, Frequency and Duration
Continuous alarm monitoring
was carried out at Ash Lagoon and Ching Lam.
The measurement duration and parameter of
noise monitoring were presented in Table 3.2 as follows:
Table 3.2 Noise
Monitoring Duration and Parameter
Location |
Time
Period |
Frequency |
Parameter |
Ash Lagoon Ching
Lam |
Day-time: 0700-1900 hrs on normal weekdays Evening-time & holidays: 0700-2300 hrs on holidays; and 1900-2300 hrs on all other days Night-time: 2300-0700 hrs of next day |
Day-time: 30 minutes Evening-time & holidays: 5 minutes Night-time: 5 minutes |
30-min
LAeq 5-min LAeq 5-min LAeq |
3.5
Monitoring
Procedures and Calibration Details
Monitoring
Procedures
Continuous Noise
Monitoring for Lamma Extension Construction
The measured noise levels (MNL's)
were collected at the
noise alarm monitoring stations at Ash Lagoon and Ching Lam. The notional
background noise levels (viz. baseline noise data at
Ash Lagoon and Ching Lam) were applied to correct the corresponding MNL's in 30-min/5-min LAeq.
A wind speed sensor was
installed at Station Building Rooftop.
The wind speed signal was used to determine whether the
data from Ash Lagoon and Ching Lam noise alarm monitoring stations were
affected. The instantaneous data was discarded in case the instantaneous wind speed exceeded 10 m/s. The 30-min/5-min LAeq was
considered valid only if the amount of
valid data was equal to or above 70%.
Equipment
Calibration
The sound level meters
and calibrators were verified by the manufacturer or accredited laboratory. With the endorsement of the Independent
Environmental Checker, the enhancement of calibration of sound level meter at
the noise monitoring stations was implemented.
The monthly manual on-site calibration using sound level calibrator was
replaced by the daily auto charge injection calibration function of the sound
level meter. For additional quality
assurance, manual on-site calibration would still be conducted for the noise
monitoring stations once every 6 months.
The manual on-site calibrations for Ash Lagoon and Ching Lam noise
monitoring stations were carried out in September and October 2020
respectively. The next calibrations for
the two noise monitoring stations were scheduled in March and April 2021.
Continuous noise
monitoring was conducted at the two monitoring stations at Ash Lagoon and Ching
Lam.
All monitoring results
and their graphical presentations are provided in Appendix E. No
exceedance of noise Action/Limit Level was recorded in the month.
4.1
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.
4.2
Assessment of Environmental
Monitoring Results
Monitoring results for Air
Quality and Noise
The environmental
monitoring results for Air Quality and Noise in the reporting month presented
in Sections 2 and 3 respectively are summarized in Table 4.1.
Table 4.1 Summary
of AL 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 |
Ambient TSP (24-hour) |
01/02/2021- 28/02/2021 |
0 |
0 |
|
|
2 |
Ambient TSP (1-hour) |
01/02/2021- 28/02/2021 |
0 |
0 |
|
|
Noise |
||||||
1 |
Noise level at the critical NSR’s predicted by the noise alarm monitoring system |
01/02/2021- 28/02/2021 |
0 |
0 |
|
|
Wastes generated from
this Project include inert construction and demolition (C&D) materials and
non-inert C&D materials. Inert
C&D materials comprise excavated materials and broken concrete. Non-inert C&D
materials comprise general refuse, metals and paper/ cardboard packaging,
plastics, chemical waste, etc.
Inert C&D material
and non-inert C&D material disposed of in February 2021 are shown in Table 4.2.
Table 4.2 Estimated Amounts of Waste in February 2021
Total Inert C&D Waste Materials |
Non-inert C&D Materials |
||
C&D Materials Recycled |
C&D Waste Disposed of at Landfill |
Chemical Waste |
|
0 Tonnes |
0 Tonnes |
55.34 Tonnes |
0 Litres |
The
monthly waste flow tables prepared by the contractors are attached in Appendix
K
Site audits were carried out by ET on a weekly basis to monitor environmental issues at the construction sites
to ensure that all mitigation measures were implemented timely and properly. The site audit
findings for the reporting month are summarized in Appendix
H. The
site conditions were generally satisfactory.
All required mitigation measures were implemented.
4.5
Status of
Environmental Licensing and Permitting
All
permits/licenses obtained for the project are summarised in Table 4.3.
Table 4.3 Summary of
Environmental Licensing and Permit Status
Description |
Permit No. |
Valid Period |
Highlights |
Status |
|
From |
To |
||||
Varied Environmental Permit |
EP-071/2000/D |
28/09/20 |
- |
The whole construction work site |
Valid |
Construction Noise Permit |
GW-RS0668-20 |
17/09/20 |
13/03/21 |
Civil and Building Works for Unit L11.
Operation of PME during restricted hours |
Valid |
Construction Noise Permit |
GW-RS0966-20 |
01/01/21 |
30/06/21 |
Power Block Facilities works for Unit L11. Operation of PME during restricted hours |
Valid |
Construction Noise Permit |
GW-RS0039-21 |
01/02/21 |
31/07/21 |
Construction site for Unit L12.
Operation of PME during restricted hours |
Valid |
Construction Noise Permit |
GW-RS0072-21 |
08/02/21 |
07/08/21 |
Civil and Building Works for Unit L12.
Operation of PME during restricted hours |
Valid |
WPCO Discharge Licence# |
WT00034006-2019 |
08/08/19 |
31/08/24 |
Civil and Building Works for Unit L11 |
Valid |
Registration of Chemical Waste Producer |
WPN5213-912-P2781-22 |
22/02/16 |
- |
Civil and Building Works |
Valid |
Registration of Chemical Waste Producer |
WPN5517-912-T2007-02 |
17/03/05 |
- |
E&M Equipment Installation and Maintenance |
Valid |
Waste Disposal Billing Account |
Account No.:
7031135 |
21/06/18 |
- |
Civil and Building Works for Unit L11 |
Valid |
Waste Disposal Billing Account |
Account No.:
7027672 |
24/04/17 |
- |
E&M Erection of Power Block Facilities – L11 |
Valid |
Waste Disposal Billing Account |
Account No.: 7038672 |
27/10/20 |
- |
Civil works for Unit L12 No.5 C.W. intake and cable bridge |
Valid |
Notes: # - Water quality monitoring was carried out in February 2021
and the results of which had been reported separately by the contractor.
4.6
Implementation
Status of Environmental Mitigation Measures
Mitigation measures detailed in
the permits and
the EM&A Manual (Construction Phase) are
required to be implemented. An updated
summary of the Environmental Mitigation Implementation Schedule (EMIS) is presented in Appendix I.
4.7
Implementation
Status of Event/Action Plans
The Event/Action Plans
extracted from the EM&A Manual (Construction Phase) are presented in Appendix G.
4.8
Implementation
Status of Environmental Complaint Handling Procedures
In February 2021, no
complaint against the construction activities was received.
Table 4.4 Environmental Complaints Received in February 2021
Case Reference / Date, Time Received / Date, Time Concerned |
Descriptions / Actions Taken |
Conclusion
/ Status |
Nil |
N/A |
N/A |
Table
4.5 Outstanding Environmental
Complaints Carried Over
Case Reference / Date, Time Received / Date, Time Concerned |
Descriptions / Actions Taken |
Conclusion / Status |
Nil |
N/A |
N/A |
5.1
Key Issues for
the Coming Month
Key issues to be considered in the
coming month include:
Unit L11 Civil and Building Works
Noise Impact
·
To continue
monitoring the noise level during construction and to ensure compliance with
the CNP’s already obtained.
·
To continue
executing the preventive measures for avoiding noise exceedance and keep
monitoring/ reviewing the noise performance.
Air Impact
·
To monitor and
review the sufficiency of the dust suppression measures provided and increase
the resources accordingly if necessary.
Water Impact
·
To treat
wastewater in sedimentation pit and tanks before discharge and to ensure
compliance in accordance with the WPCO discharge licence
already obtained.
Unit L11 Mechanical Erection
Noise Impact
·
To continue
monitoring the noise level during construction and to ensure compliance with
the CNP’s already obtained.
·
To continue executing the preventive measures for
avoiding noise exceedance and keep monitoring/ reviewing the noise performance.
Air Impact
·
To monitor and review the sufficiency of the dust
suppression measures provided and increase the resources accordingly if
necessary.
Unit L11 Electrical, Instrumentation & Control Erection
Noise Impact
·
To continue
monitoring the noise level during construction and to ensure compliance with
the CNP’s already obtained.
·
To continue executing the preventive measures for
avoiding noise exceedance and keep monitoring/ reviewing the noise performance.
Air Impact
·
To monitor and review the sufficiency of the dust
suppression measures provided and increase the resources accordingly if
necessary.
Unit L12 Civil and Building Works
Noise Impact
·
To continue
executing the preventive measures for avoiding noise exceedance and keep
monitoring/ reviewing the noise performance.
Air Impact
·
To monitor and
review the sufficiency of the dust suppression measures provided and increase
the resources accordingly if necessary.
Water Impact
·
To treat
wastewater in desilting pits and tanks for reuse on water spraying.
·
To provide silt
curtain as preventive measures at Northern Cable Bridge area.
5.2
Monitoring
Schedules for the Next 3 Months
The tentative environmental monitoring schedules for the next 3
months are shown in Appendix C.
5.3
Construction
Program for the Next 3 Months
The tentative construction
programs for the next 3 months are shown in Appendix
JAppendix
J.
All monitoring work at designated
stations was performed as scheduled
satisfactorily. The environmental monitoring works and site inspection were performed as scheduled in the reporting month. All monitoring results were checked and
reviewed.
No Action/Limit level exceedance on 1-hour and 24-hour TSP level was recorded in the reporting month.
No Action/Limit level exceedance on noise was recorded in the reporting month.
Environmental mitigation measures recommended in the EM&A manual
for the construction activities were implemented in the reporting month. No complaint
against the construction activities 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.