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 March 2017
Table 4.3......... Summary of Environmental Licensing and Permit Status
Table 4.4......... Environmental Complaints Received in March 2017
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 March 2017
Appendix E Noise Monitoring Results for
March 2017
Appendix F The
QA/QC Procedures and Results
Appendix J Tentative Construction Programme
Appendix K Monthly Waste Flow
Table for March 2017
This is the 84th 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 March
2017.
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) is planned for commercial operation in early 2020 and the associated construction work commenced in February 2016.
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.
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 |
275kV Switching Station |
Bored pile construction and interface core works |
Unit L10 Civil and Building |
Main Station Building (excavation and backfilling, sheet piling, breaking of pile
head, formwork, steel fixing and concreting), and Site Office Building (pile installation,
backfilling, formwork, steel fixing and concreting) |
Unit L11 Piling |
Bored pile construction work |
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
Construction
work for Lamma Extension was carried out during the
restricted hours including evening-time, holidays and night-time under valid
Construction Noise Permit. No exceedance of Action and Limit levels for noise arising from the construction of Lamma Extension was recorded in the month.
Site Environmental Audit
EPD officials from Regional Office (South) visited Lamma
Power Station on 17/03/2017. EPD inspected the Lamma Extension Construction Site. There was no adverse comment from EPD
regarding the construction site.
Site audits
were carried out on a weekly basis to monitor environmental issues on the construction site. The site conditions were generally
satisfactory. All required mitigation
measures were implemented.
Environmental Licensing and Permitting
Description |
Permit No. |
Valid Period |
Issued To |
Date of Issuance |
|
From |
To |
||||
Varied Environmental Permit |
EP-071/2000/C |
18/05/05 |
- |
HK Electric |
18/05/05 |
Construction Noise Permit |
GW-RS1026-16 |
11/10/16 |
10/04/17 |
Contractor |
07/10/16 |
Construction Noise Permit |
GW-RS1299-16 |
26/12/16 |
25/06/17 |
Contractor |
22/12/16 |
Construction Noise Permit |
GW-RS1318-16 |
26/12/16 |
26/06/17 |
Contractor |
23/12/16 |
Construction Noise Permit |
GW-RS0183-17 |
13/03/17 |
12/09/17 |
Contractor |
07/03/17 |
WPCO Discharge Licence |
WT00025747-2016 |
05/10/16 |
31/10/21 |
Contractor |
06/10/16 |
WPCO Discharge Licence |
WT00027040-2017 |
06/02/17 |
28/02/22 |
Contractor |
06/02/17 |
WPCO Discharge Licence |
WT00027316-2017 |
01/03/17 |
31/03/22 |
Contractor |
01/03/17 |
Registration of Chemical Waste Producer |
WPN5113-912-S3180-19 |
21/01/16 |
- |
Contractor |
21/01/16 |
Registration of Chemical Waste Producer |
WPN5213-912-P2781-22 |
22/02/16 |
- |
Contractor |
22/02/16 |
Registration of Chemical Waste Producer |
WPN5113-912-S3180-20 |
11/01/17 |
- |
Contractor |
11/01/17 |
Waste
Disposal Billing Account |
Account No.:
7024247 |
03/02/16 |
- |
Contractor |
03/02/16 |
Waste
Disposal Billing Account |
Account No.:
7026035 |
06/10/16 |
- |
Contractor |
06/12/16 |
Waste
Disposal Billing Account |
Account No.:
7026793 |
28/12/16 |
- |
Contractor |
28/12/16 |
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:
275kV Switching Station
-
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 recycle and reuse
wastewater from bored pipe construction work and to ensure compliance with the
WPCO discharge licence already obtained.
Unit L10 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.
Unit L11 Piling 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;
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/C, 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 March 2017.
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 activity for 275kV Switching Station was bored pile construction and interface core works. Construction activities for Unit L10 civil and building works were carried out for Main Station Building (excavation and backfilling, sheet piling, breaking of pile head, formwork, steel fixing and concreting), and for Site Office Building (Piling installation, backfilling, formwork, steel fixing and concreting). Construction activity for Unit L11 piling was bored pile construction work. 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 |
275kV Switching
Station
|
||
1. |
Bored
pile construction |
Air
-
Dust suppression measures implemented in the
main haul road. -
Using ULSD for PMEs. Water
-
All wastewater will be pumped to the
sedimentation ponds for desilting process. After
that, wastewater will be re-used for construction. activities
or pumped for storage. Discharging to communal storm drain is the last
priority. Noise
-
General noise mitigation measures employed at
all work sites throughout the construction phase. Waste
Management -
Waste Management Plan submitted and implemented. |
2. |
Interface
core |
Water
-
Wastewater will be re-used for drilling
machine. |
Unit L10
Civil and Building Works
|
||
3. |
Main
Station Building (excavation
and backfilling, sheet piling, breaking of pile head, formwork, steel fixing
and concreting) |
Air
- All regulated machine attached with valid exception/approval NRMM labels. - Water truck was used for water spraying of the haul road. - Water spraying for concrete breaking of pile head. - Compaction was conducted for soil platform - Excavated slope covered with cement. Noise
-
Cylindrical screening was used for noise mitigation measures
during drilling. Wastewater
- Sedimentation tanks were set up for wastewater reuse Waste Management
-
Excavated soil was temporary stored for backfilling. -
Scrape metal will be recycled. -
Timber will be reused as much as possible. |
4. |
Site
Office Building
(pile installation, backfilling, formwork, steel
fixing and concreting) |
Air
- Excavated slope covered. Waste Management
- Scrape metal will be recycled. -
Timber will be reused as much as possible. |
Unit L11 Piling Works |
||
5. |
Bored
pile construction |
Air
-
Dust suppression measures implemented in the
main haul road. -
Using ULSD for PMEs. -
Cover dusty stockpile with tarpaulin and water
spraying. Water
-
All wastewater will be pumped to the
sedimentation ponds for desilting process. After
that, wastewater will be re-used for construction. activities
or pumped for storage. Discharging to
communal storm water drain is the last priority. Noise
-
General noise mitigation measures employed at
all work sites throughout the construction phase. Waste
Management -
Waste Management Plan submitted and implemented. |
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 |
Continuous
24-hour TSP air quality monitoring was performed using the High Volume Air
Samplers (HVAS), TEOM continuous dust monitor and the MINIVOL Portable Sampler
at AM1&2, AM3 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: HVAS
Sampler Continuous
TSP Dust Meter MINIVOL
Portable Sampler 1-hour
sampling: Continuous
TSP Dust Meter |
Model TE5170x Tisch Environmental Inc. 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
HVAS and 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 flow record chart for the previous sampling was checked to see if there was any abnormality.
· 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;
· A new flow record chart was loaded into the flow recorder;
· 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 4 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 have been verified by the manufacturer or accredited laboratory. Equipment for continuous noise monitoring was calibrated at least once per month.
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, 3 and 4 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) |
01/03/17- 31/03/17 |
0 |
0 |
|
|
2 |
Ambient TSP (1-hour) |
01/03/17- 31/03/17 |
0 |
0 |
|
|
Noise |
||||||
1 |
Noise level at the critical NSR’s predicted by the noise alarm monitoring system |
01/03/17- 31/03/17 |
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.
No inert C&D material nor non-inert C&D material
were disposed of in March 2017 as shown in Table 4.2.
Table
4.2 Estimated Amounts of Waste in March
2017
Total Inert
C&D Waste Materials |
Non-inert
C&D Materials |
||
C&D
Materials Recycled |
C&D
Waste Disposed of at Landfill |
Chemical
Waste |
|
11551.23 Tonnes |
0 Tonnes |
5.54 Tonnes |
0 Litres |
The monthly waste flow tables prepared by the contractors are attached in Appendix K.
EPD officials from Regional Office (South) visited Lamma Power Station on 17/03/2017. EPD inspected the Lamma
Extension Construction Site. There was
no adverse comment from EPD regarding the construction site.
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/C |
18/05/05 |
- |
The whole construction work site |
Valid |
Construction Noise Permit |
GW-RS1026-16 |
11/10/16 |
10/04/17 |
Foundation works for Unit L10 (275kV Switching Station). Operation of PME during restricted hours. |
Valid |
Construction Noise Permit |
GW-RS1299-16 |
26/12/16 |
25/06/17 |
Civil and Building Works for Unit L10.
Operation of PME during restricted hours. |
Valid |
Construction Noise Permit |
GW-RS1318-16 (superseded by CNP no. GW-RS0183-17) |
26/12/16 |
26/06/17 |
Foundation work for Unit L11.
Operation of PME during restricted hours. |
Valid |
Construction Noise Permit |
GW-RS0183-17 |
13/03/17 |
12/09/17 |
Foundation work for Unit L11.
Operation of PME during restricted hours. |
Valid |
WPCO Discharge Licence* |
WT00025747-2016 |
05/10/16 |
31/10/21 |
The construction site of 275kV Switching Station |
Valid |
WPCO Discharge Licence |
WT00027040-2017 |
06/02/17 |
28/02/22 |
Foundation works for Unit L11 |
Valid |
WPCO Discharge Licence |
WT00027316-2017 |
01/03/17 |
31/03/22 |
Civil and Building Works for Unit L10 |
Valid |
Registration of Chemical Waste Producer |
WPN5113-912-S3180-19 |
21/01/16 |
- |
Foundation works for Unit L10 |
Valid |
Registration of Chemical Waste Producer |
WPN5213-912-P2781-22 |
22/02/16 |
- |
Civil and Building Works for Unit L10 |
Valid |
Registration of Chemical Waste Producer |
WPN5113-912-S3180-20 |
11/01/17 |
- |
Foundation works for Unit L11 |
Valid |
Waste Disposal Billing Account |
Account No.: 7024247 |
03/02/16 |
- |
Foundation works for Unit L10 |
Valid |
Waste Disposal Billing Account |
Account No.:
7026035 |
06/10/16 |
- |
Civil and Building Works for Unit L10 |
Valid |
Waste Disposal Billing Account |
Account No.: 7026793 |
28/12/16 |
- |
Foundation works for Unit L11 |
Valid |
Note: * - Water quality monitoring was carried out in January
2017 and the result had been reported under a separate cover 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 March 2017, no complaint against the construction activities was received.
Table 4.4 Environmental
Complaints Received in March 2017
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:
275kV
Switching Station
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 recycle and reuse wastewater from bored pipe
construction work and to
ensure compliance in accordance with the WPCO discharge licence already
obtained.
Unit L10
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.
Unit
L11 Piling 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 recycle and reuse wastewater from bored pipe
construction work and to
ensure compliance in accordance with the WPCO discharge licence already
obtained.
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.