Revision History
Rev. |
Description of Modification |
Date |
0 |
1st Submission |
12/04/2023 |
1 |
2ndSubmission |
20/04/2023 |
Content
Executive Summary
5. Summary of Exceedance, Complaints, Notification of Summons and Prosecutions
8. Conclusion and Recommendations
Summary of Implementation Status of Environmental Mitigation |
|
Appendix H |
|
Appendix I |
|
Appendix J |
|
Appendix K |
|
Appendix L |
|
Appendix M |
|
Appendix N |
Executive Summary
Introduction
A1. Penta-Ocean - Concentric Joint Venture (POCJV) is contracted to carry out the Mainlaying in Tseung Kwan O under Contract No. 13/WSD/16 (hereinafter known as “the Project”).
A2. In accordance with the Environmental Monitoring and Audit (EM&A) Manual for the Project, EM&A works should be carried out by Environmental Team (ET), Acuity Sustainability Consulting Limited (ASCL), during the construction phase of the Project.
A3. This is the 56th Monthly EM&A Report, prepared by ASCL, for the Project summarizing the monitoring results and audit findings of the EM&A programme at and around Tseung Kwan O (TKO) during the reporting period from 1 March to 31 March 2023.
A4. The EM&A programme for this contract has covered environmental monitoring on construction noise level at selected NSRs and Contractor’s environmental performance auditing in the aspects of construction dust, construction noise, water quality, waste management, landscape and visual and ecology.
Summary of Main Works Undertaken & Key Mitigation Measures Implemented
A5. Key works carried out in this reporting period for the Project included the followings:
Location |
Construction activities carried in the reporting month |
Wan Po Road and TKO Area 137 |
· Open trench method · Water main installation inside sleeve pipe |
TKO Promenade (Stage 1 Landfill) & Po Yap Road Roundabout |
· Open trench method · Water main installation inside sleeve pipe · Trenchless Method (sleeve pipe) |
HK Velodrome |
· Open trench method · Water main installation inside sleeve pipe · Trenchless Method (sleeve pipe) |
Po Lam Road South / Ling Hong Road |
· Open trench method · Water main installation inside sleeve pipe |
Tsui Lam Road / Abandoned Road |
· Open trench method · Pile cap construction |
A6. The major environmental impacts brought by the above construction works include:
· Construction dust and noise generation from mainlaying of pipes, and excavation;
· Waste generation from the construction activities; and
· Impact on water quality from construction activities
A7. The key environmental mitigation measures implemented for the Project in this reporting period associated with the above construction works include:
· Reduction of construction dust generation from mainlaying of pipes, and excavation;
· Reduction of noise from equipment and machinery on-site;
· Sorting and storage of general refuse and construction waste; and
· Treatment of wastewater through water treatment facilities before discharge
Summary of Exceedance & Investigation & Follow-up
A8. Noise monitoring was scheduled in the reporting month for NSR4 Creative Secondary School on 1, 7, 13, 24 and 30 March 2023 as construction works were conducted within 300m to the noise sensitive receiver. No Action or Limit Level exceedance was recorded during the reporting period.
A9. Landfill gas monitoring was carried out by the Registered Safety Officer of the Contractor at the excavation locations and within the consultation zones for 564 times. All the measured results were presented in Appendix J and were within the Action and Limit Levels.
Complaint Handling and Prosecution
A10. No environmental complaint, notifications of summons and prosecution was received in the reporting month.
Reporting Change
A11. There were no changes reported that may affect the on-going EM&A programme.
Summary of Upcoming Key Issues and Key Mitigation Measures
A12. Key works in the next reporting month for the Project will include the followings:
Location |
Construction activities to be carried out in next reporting month |
Wan Po Road and TKO Area 137 |
· Open trench method · Water main installation inside sleeve pipe |
TKO Promenade (Stage 1 Landfill) & Po Yap Road Roundabout |
· Open trench method · Water main installation inside sleeve pipe · Trenchless Method (sleeve pipe) |
HK Velodrome |
· Open trench method · Water main installation inside sleeve pipe · Trenchless Method (sleeve pipe) |
Po Lam Road South / Ling Hong Road |
· Open trench method · Water main installation inside sleeve pipe |
Tsui Lam Road / Abandoned Road |
· Open trench method |
A13. The major environmental impacts brought by the above construction works will include:
· Construction dust and noise generation of mainlaying of pipes, and excavation works;
· Waste generation from construction activities; and
· Impact on water quality from construction activities.
A14. The key environmental mitigation measures for the Project in the coming reporting period associated with the above construction works will include:
· Reduction of construction dust generation of mainlaying of pipes, and excavation works by regular water spraying and covering of dusty materials with screenings;
· Reduction of noise from equipment and machinery on-site;
· Sorting and storage of general refuse and construction waste; and
· Treatment of wastewater through water treatment facilities before discharge.
The proposed Desalination Plant at Tseung Kwan O (DPTKO) will produce potable water with an initial capacity of 135 million liters per day (MLD), expandable to an ultimate capacity of 270 MLD in the future to provide a secure and alternative freshwater resource complying with the World Health Organization (WHO) standards. The plant will adopt the Seawater Reverse Osmosis (SWRO) technology, which dominates the market due to its reliability and progressive reduction in cost as the technology advances.
This is the 56th Monthly EM&A Report for the Project which summarizes the key findings of the EM&A programme during the reporting period from 1 March to 31 March 2023.
The Project Organization structure for Construction Phase is presented in Figure 1.1.
Figure 1.1 Project Organization Chart
Contact details of the key personnel are presented in Table 1.1 below:
Table 1.1 Contact details of the key personnel
Party |
Position |
Name |
Telephone no. |
Penta-Ocean - Concentric Joint Venture |
Environmental Officer |
Calvin Chik |
9863 5630 |
Acuity Sustainability Consulting Limited |
Environmental Team Leader |
Jacky Leung |
2698 6833 |
ANewR Consulting Limited |
Independent Environmental Checker |
James Choi |
2618 2831 |
1.4 Summary of Construction Works
Details of the major construction works undertaken in this reporting period are shown in Table 1.2 and the construction works locations are shown in Appendix B. The construction programme is presented in Appendix A.
Table 1.2 Summary of the Construction Works Undertaken during the Reporting Month
Location |
Construction activities carried out in the reporting month |
Wan Po Road and TKO Area 137 |
· Open trench method · Water main installation inside sleeve pipe |
TKO Promenade (Stage 1 Landfill) & Po Yap Road Roundabout |
· Open trench method · Water main installation inside sleeve pipe · Trenchless Method (sleeve pipe) |
HK Velodrome |
· Open trench method · Water main installation inside sleeve pipe · Trenchless Method (sleeve pipe) |
Po Lam Road South / Ling Hong Road |
· Open trench method · Water main installation inside sleeve pipe |
Tsui Lam Road / Abandoned Road |
· Open trench method · Pile cap construction |
A summary of the valid permits, licences, and or notifications on environmental protection for this Project is presented in Table 1.3.
Table 1.3 Summary of the Status of Environmental Licence, Notification and Permit
Reference No. |
Valid Period |
Status |
Remark |
|
From |
To |
|||
Variation of Environmental Permit |
||||
EP no.: EP-503/2015/A |
-- |
-- |
Valid |
N/A |
Notification of Construction Works under the Air Pollution Control (Construction Dust) Regulation |
||||
423775 |
-- |
-- |
Valid |
N/A |
Chemical Waste Producer Registration |
||||
5213-839-P3287-01 |
-- |
-- |
Valid |
N/A |
Billing Account for Disposal of Construction Waste |
||||
A/C no.: 7029491 |
-- |
-- |
Valid |
N/A |
Water Discharge Licence |
||||
WT00032336-2018 |
10 Dec 2018 |
31 Dec 2023 |
Valid |
N/A |
Construction Noise Permit (CNP) |
||||
GW-RE0109-23 |
8 Feb 2023 |
31 Mar 2023 |
Expired |
Po Shun Road near junction of Wan Po Road |
GW-RE0091-23 |
6 Feb 2023 |
29 Apr 2023 |
Valid |
Construction site near junction of Wan Po Road and Pung Loi Road |
The status for all environmental aspects is presented Table 1.4.
Table 1.4 Summary of Status for Key Environmental Aspects under the EM&A Manual
The baseline noise monitoring result has been reported in Baseline Monitoring Report and submitted to EPD under VEP Condition 3.4. |
|
Landfill Gas |
|
Impact Monitoring |
On-going |
The
EM&A programme has been implemented in accordance with the recommendations
presented in the approved EIA Report and the EM&A Manual. A summary of
implementation status of the environmental mitigation measures for the
construction phase of the Project during the reporting period is provided in Appendix
C.
To ensure no adverse noise impact, noise monitoring is recommended to be carried out within 300m radius from the nearby noise sensitive receivers (NSRs), during construction phase. The NSRs selected as monitoring station are (i) NSR4 – Creative Secondary School, (ii) NSR24 – PLK Laws Foundation College, and (iii) NSR31 – School of Continuing and Professional Studies – CUHK respectively.
Referring to EM&A Manual Section 4.1.2, the impact noise monitoring should be carried out at all the designated monitoring stations when there are project-related construction activities undertaken within a radius of 300m from the monitoring stations.
Impact monitoring for noise impact was conducted in the reporting month for NSR4 – Creative Secondary School on 1, 7, 13, 24 and 30 March 2023 as construction works were conducted within 300m to the noise sensitive receiver. Detailed monitoring results can be found in Appendix G.
2.2 Noise Monitoring Parameters, Time, Frequency
Impact noise monitoring was conducted weekly in the reporting period between 0700-1900 on normal weekdays. Construction works will follow the requirements as stipulated in the valid CNPs if works have to be conducted in the restricted hours.
Construction noise level was measured in terms of the A-weighted equivalent continuous sound pressure level (LAeq). Leq 30min was used as the monitoring parameter for the time period between 0700 and 1900 on normal weekdays. Table 2.1 summarizes the monitoring parameters, frequency, and duration of the impact noise monitoring. The monitoring schedule is provided in Appendix D.
Table 2.1 Noise Monitoring Parameters, Time, Frequency and Duration
Time |
Frequency |
Duration |
Parameters |
Daytime: 0700-1900 |
Once per week |
Continuously in Leq 5min/Leq 30min (average of 6 consecutive Leq 5min) |
Leq, L10 & L90 |
2.3 Noise Monitoring Locations
The monitoring locations should normally be made at a point 1m from the exterior of the NSRs building façade and be at a position 1.2m above the ground. A correction of +3dB(A) should be made to the free-field measurements.
According to the environmental findings detailed in the EIA report and Baseline Monitoring Report, the designated locations for the construction noise monitoring are listed in Table 2.2 below.
Table 2.2 Noise Monitoring Location
NSR ID |
Noise Sensitive Receivers |
Monitoring Location |
Position |
NSR 4 |
Creative Secondary School |
Roof Floor |
1 m from facade |
NSR 24 |
PLK Laws Foundation College |
Pedestrian Road on Ground Floor |
Free-field |
NSR 31 |
School of Continuing and Professional Studies - CUHK |
Roof Floor |
1 m from facade |
Three noise monitoring locations for impact monitoring at the nearby sensitive receivers are shown in Figure 2.1-2.3.
Figure 2.1 NSR4 Creative Secondary School |
Figure 2.2 NSR24 PLK Laws Foundation College |
Figure 2.3 NSR31 School of Continuing and Professional Studies - CUHK |
2.4 Impact Monitoring Methodology
Integrated sound level meters were used for the noise monitoring. The meters were in compliance with the International Electrotechnical Commission Publications 651: 1979 (Type 1) and 804: 1985 (Type 1) specifications. Immediately prior to and following each noise measurement the accuracy of the sound level meters was checked using an acoustic calibrator generating a known sound pressure level at a known frequency. Measurements may be accepted as valid only if the calibration level before and after the noise measurements agree to within 1.0 dB(A).
Calibration certificates of the instruments used are presented in Appendix E. Noise measurements were not made in the presence of fog, rain, wind with a steady speed exceeding 5 m/s or wind with gusts exceeding 10 m/s. The wind speed was checked with a portable wind speed meter capable of measuring the wind speed in m/s.
Equipment |
Brand and Model |
Serial Number |
Date of Calibration |
Expiry Date |
Sound Level Meter |
Svantek 971 |
96062 |
27/06/2022 |
26/06/2023 |
Sound Level Meter Calibrator |
RION NC-75 |
34524163 |
09/05/2022 |
08/05/2023 |
Pocket Wind Meter Anemometer |
Kestrel 1000 Wind Meter |
Nil |
Nil |
Nil |
The Action/Limit Levels are in line with the criteria of Practice Note for Professional Persons (ProPECC PN 2/93) “Noise from Construction Activities – Non-statutory Controls” and Technical Memorandum on Environmental Impact Assessment Process issued by HKSAR Environmental Protection Department [“EPD”] under the Environmental Impact Assessment Ordinance, Cap 499, S.16 are presented in Table 2.4.
Table 2.4 Action and Limit Levels for Noise
Time Period |
Action Level |
Limit Level (dB(A)) |
0700-1900 on normal weekdays |
When one documented complaint is received from any one of the noise sensitive receivers |
· 70 dB(A) for school and · 65 dB(A) during examination period |
Notes: (a) Limits specified in the GW-TM and IND-TM for construction and operation noise, respectively. |
If exceedances are found during noise monitoring, the actions in accordance with the Event and Action Plan will be carried out according to Appendix F.
2.6 Monitoring Results and Observations
Referring to EM&A Manual Section 4.1.2, impact monitoring for noise impact was scheduled weekly in the reporting month for NSR4 – Creative Secondary School on 1, 7, 13, 24 and 30 March 2023. Detailed monitoring results are presented in Appendix G.
No action or limit level exceedance was recorded for construction noise monitoring during the reporting period.
The waste generated from this Project includes inert construction and demolition (C&D) materials, and non-inert C&D materials. Non-inert C&D materials are made up of general refuse, vegetative wastes, and recyclable wastes such as plastics and paper/cardboard packaging waste. Steel materials generated from the project are also grouped into non-inert C&D materials as these materials were not disposed of with other inert C&D materials. With reference to relevant handling records and trip tickets of this Project, the quantities of different types of waste generated in the reporting month are summarised in Table 3.1. Details of cumulative waste management data are presented as a waste flow table in Appendix H.
Table 3.1 Quantities of waste generated from the Project
Reporting period |
Quantity |
|||||
Inert C&D Materials (in ‘000m3) |
Chemical Waste (in ‘000kg) |
Non-inert C&D Materials |
||||
Others, e.g., General Refuse disposed at Landfill (in ‘000m3) |
Recycled materials |
|||||
Paper/cardboard (in ‘000kg) |
Plastics (in ‘000kg) |
Metals (in ‘000kg) |
||||
Mar 2023 |
1.093 |
0.000 |
0.005 |
0.059 |
0.000 |
0.000 |
4.1 Monitoring Requirement
In accordance with Section 11 of the EM&A Manual, monitoring of landfill gas is required for construction works within the 250m Consultation Zone. Part of the desalination plant and the indicative area of natural slope mitigation works fall within the SENT Landfill Extension Consultation Zone; and part of the 1,200 mm diameter fresh water mains along Wan Po Road falls within the SENT Landfill and SENT Landfill Extension Consultation Zones, TKO Stage II/III Restored Landfill and TKO Stage I Restored Landfill Consultation Zones.
4.2 Monitoring Location
Monitoring of oxygen, methane, carbon dioxide and barometric pressure was performed for excavations at 1m depth or more within the Consultation Zone.
During construction of works within the consultation zones, excavations of 1m depth or more was monitored:
· At the ground surface before excavation commences;
· Immediately before any worker enters the excavation;
· At the beginning of each working day for the entire period when the excavation remains open; and
· Periodically through the working day whilst workers are in the excavation.
For excavations between 300mm and 1m deep, measurements should be carried out:
· Directly after the excavation has been completed; and
· Periodically whilst the excavation remains open.
The area required to be monitored for landfill gas in the reporting period are shown in Figure 4.1 to Figure 4.9.
Figure 4.1 Monitoring Location - CH.A 6+70 |
|
Figure 4.2 Monitoring Location – CH.A 13+50 ~ 14+00 (Pit A) |
|
Figure 4.4 Monitoring Location – Pit 137A (137 Pit A) |
. |
Figure 4.5 Monitoring Location – Pit 137B (137 Pit B) |
|
Figure 4.6 Monitoring Location – Pit 137C (137 Pit C) |
|
Figure 4.7 Monitoring Location – Wan Po Road 4 |
|
Figure 4.8 Monitoring Location – Wan Po Road 5 |
|
Figure 4.9 Monitoring Location –CH.CA 0+00 to CH.CA 04+25 (CH.C 7+40 ~ 12+00) |
4.3 Monitoring Parameters
Landfill Gas monitoring was carried out to identify any migration between the landfill and the Project and to ensure the safety of the construction, operation and maintenance personnel working on-site, visitors and any other person within the Project area.
The following parameters were monitored:
· Methane.
· Oxygen.
· Carbon Dioxide.
· Barometric Pressure.
4.4 Action and Limit Level
Action and Limit Level are provided in Table 4.1.
Table 4.1 Action and Limit Level for Landfill Gas Monitoring Equipment
Parameters |
Action Level |
Limit Level |
Oxygen (O2) |
<19% O2 |
<19% O2 |
Methane (CH4) |
>10% LEL |
>20% LEL |
Carbon Dioxide (CO2) |
>0.5% CO2 |
>1.5% CO2 |
4.5 Monitoring Equipment
· Complying with the Landfill Gas Hazard Assessment Guidance Note as intrinsically safe;
· Capable of continuous barometric pressure and gas pressure measurements;
· Normally operated in diffusion mode unless required for spot sampling, when it should be capable of operating by means of an aspirator or pump;
· Having low battery, fault and over range indication incorporated;
· Capable of storing monitoring data, and shall be capable of being down-loaded directly;
· Measure in the following ranges:
methane |
0-100% Lower Explosion Limit (LEL) and 0-100% v/v; |
oxygen |
0-25% v/v; |
carbon dioxide |
0-5% v/v; and |
barometric pressure |
mBar (absolute) |
alarm (both audibly and visually) in the event that the concentrations of the following are exceeded:
methane |
>10% LEL; |
oxygen |
<19% by volume; and |
carbon dioxide |
>0.5% by volume |
barometric pressure |
mBar (absolute) |
Monitoring Equipment used in the reporting period are summarised in Table 4.2. The Landfill Gas monitoring equipment calibration certificate is presented in Appendix I.
Table 4.2 Landfill Gas Monitoring Equipment
Equipment |
Brand and Model |
Calibration Expiry Date |
Portable Gas Detector |
PGM-2500 QRAE III |
27 July 2023 |
XT-XWHM-Y-OR |
2 September 2023 |
|
CO2 Analyzer |
TES, 1307H |
16 November 2023 |
4.6 Monitoring Results
Table 4.3 Action and Limit Levels and Event and Action Plan for LFG Hazard
Parameters |
Level |
Action |
Oxygen (O2)
|
Action Level < 19% O2 |
Ventilate trench/void to restore O2 to > 19% |
Limit Level < 19% O2 |
Stop works Evacuate personnel/prohibit entry Increase ventilation to restore O2 to > 19% |
|
Methane (CH4)
|
Action Level >10% LEL |
Post "No Smoking" signs Prohibit hot works Increase ventilation to restore CH4 to <10% LEL |
Limit Level >20% LEL |
Stop works Evacuate personnel/prohibit entry Increase ventilation to restore CH4 to<10% LEL |
|
Carbon Dioxide (CO2)
|
Action Level >0.5% CO2 |
Ventilate to restore CO2 to < 0.5% |
Limit Level >1.5% CO2 |
Stop works Evacuate personnel / prohibit entry Increase ventilation to restore CO2 to <0.5% |
The Environmental Complaint Handling Procedure is shown in below Figure 5.1:
Figure 5.1 Environmental Complaint Handling Procedure
Landfill gas monitoring was carried out by the Registered Safety Officer of the Contractor at the excavation locations and within the consultation zones for 564 times. All the measured results were presented in Appendix J and were within the Action and Limit Levels.
No environmental complaint, notification of summons and prosecution was received in the reporting period.
Statistics on complaints and regulatory
compliance are summarized in Appendix K.
Site inspections were carried out on a weekly basis to monitor the implementation of proper environmental pollution control and mitigation measures under the Contract. In the reporting period, site inspections were carried out on 1, 8, 14, 24 and 28 March 2023 at the site portions list in Table 6.1 below. One joint site inspections with IEC was carried out on 28 March 2023.
Table 6.1 Site Inspection Record
Date |
Inspected Site Portion |
Time |
1 March 2023 |
Portion J |
09:30 - 10:30 |
8 March 2023 |
Portion J |
09:30 - 1030 |
14 March 2023 |
Portion J |
09:30 - 10:30 |
24 March 2023 |
Portion J |
09:30 - 10:30 |
28 March 2023 |
Portion J |
14:30 – 15:30 |
Minor deficiencies were observed during weekly site inspections. Key observations during the site inspections are summarized in Table 6.2.
Table 6.2 Site Observations
Date |
Environmental Observations |
Follow-up Status |
1 March 2023 |
1. Chemical container shall be stored with drip tray. |
1. Chemical container was stored with drip tray. |
8 March 2023 |
1. Chemical container shall be stored with drip tray. 2. Seepage water should be treated properly to comply with the requirement of discharge license before discharge. (Pit O) 3. Stockpile of dusty materials should be covered with impervious materials to prevent dust emission. (Pit O) 4. Oil leakage from the excavator was observed at Pit O1. The Contractor was reminded to clear the oil stain to avoid further leakage from the excavator. |
1. Chemical containers were stored with drip tray. 2. The watering pumping was stopped. 3. The dusty materials were removed. 4. The oil stain was cleared. |
14 March 2023 |
1. Chemical containers should be stored with drip tray. (WF2) 2. Oil leakage from excavator was observed. The Contractor was required to clean the oil stain on ground. (WF2) |
1. Chemical was removed. 2. The excavator was repaired, no oil leakage was observed. Oil stain on ground was cleared. |
24 March 2023 |
1. The sediment tank shall be cleaned up asap. (Pit P1) 2. The blockage of the storm drain should be cleaned up. (Pit Y) 3. The chemical containers shall be stored on a drip tray with chemical label. (Pit P and O1) 4. The underground water shall be discharged through sedimentation tank. (Pit P) |
1. The sediment tank was cleaned. 2. The blockage of the storm drain was cleaned up. 3. The chemical containers were removed. 4. This water pumping is for circulation and will not be discharged into storm drain. |
28 March 2023 |
1. Water pumped out from trench should be treated before discharge. (Shek Kok Road Roundabout) |
1. Water pumped out from trench was stopped. |
According to the EIA Study Report, Environmental Permit, contract documents and EM&A Manual, the mitigation measures detailed in the documents should be implemented as much as practical during the reporting period. An updated Implementation Status of Environmental Mitigation Measures (EMIS) is provided in Appendix C.
Site inspection proforma of the reporting
period is provided in Appendix L.
Table 7.1. Key works for the next reporting month
Location |
Construction activities to be carried out in next reporting month |
Wan Po Road and TKO Area 137 |
· Open trench method · Water main installation inside sleeve pipe |
TKO Promenade (Stage 1 Landfill) & Po Yap Road Roundabout |
· Open trench method · Water main installation inside sleeve pipe · Trenchless Method (sleeve pipe) |
HK Velodrome |
· Open trench method · Water main installation inside sleeve pipe · Trenchless Method (sleeve pipe) |
Po Lam Road South / Ling Hong Road |
· Open trench method · Water main installation inside sleeve pipe |
Tsui Lam Road / Abandoned Road |
· Open trench method |
The major environmental impacts brought by the above construction works will include:
· Construction dust and noise generation of mainlaying of pipes, TBM break through, and excavation works;
· Waste generation from construction activities; and
· Impact on water quality from construction activities.
· Dust suppression by regular wetting and water spraying for excavation works, mainlaying of pipes and TBM break through works;
· Reduction of noise from equipment and machinery on-site;
· Sorting and storage of general refuse and construction waste; and
· Treatment of wastewater with water treatment facilities before discharge.
Referring to EM&A Manual Section 4.1.2, the impact noise monitoring should be carried out at all the designated monitoring stations when there are project-related construction activities undertaken within a radius of 300m from the monitoring stations.
The tentative impact monitoring schedule for the next reporting month is attached in Appendix N.
This is the 56th monthly Environmental Monitoring and Audit (EM&A) Report presenting the EM&A works undertaken during the period from 1 March to 31 March 2023 in accordance with the EM&A Manual and the requirement under EP-503/2015/A.
Impact monitoring for noise impact was scheduled in the reporting month for NSR4 – Creative Secondary School on 1, 7, 13, 24 and 30 March 2023 as construction works were conducted within 300m to the noise sensitive received. No action and limit level exceedance for construction noise monitoring was recorded in the reporting period.
Landfill gas monitoring was carried out by the Registered Safety Officer of the Contractor at the excavation locations and within the consultation zones for 564 times. All the measured results were presented in Appendix J and were within the Action and Limit Levels.
No exceedance of the action and limit level for landfill gas monitoring was recorded during the reporting period.
Weekly environmental site inspections were conducted during the reporting month. Observations and Recommendation were made during site inspection, Contractor was reminded that sedimentation facilities shall be provided on site to remove silt particles from runoff before discharge and to meet the requirements of the TM standard under the WPCO.
No environmental complaint, notification of summons and prosecution was received in the reporting month.
The ET will keep track on the construction works to confirm compliance of environmental requirements and the proper implementation of all necessary mitigation measures.