Revision History
Rev. |
Description of Modification |
Date |
1. |
First issue for comments |
18/04/2024 |
2. |
Response for IEC’s comments |
19/04/2024 |
Table of Contents
Key Construction Works in the Reporting Period
Environmental Monitoring and Audit Programme
Breaches of Action and Limit Levels
Construction Works Programme and Construction Works Area
License, Notifications and Permits
Submission Status under Environmental Permit
Monitoring Parameter and Frequency
5 Environmental Site Inspection and Audit
Implementation Status of Environmental Mitigation Measures
6 Environmental Non-Conformance
Summary of Environmental Non-Compliance
Summary of Environmental Complaint
Summary of Environmental Summon and Successful Prosecution
8 Conclusions and Recommendations
List of Tables
Table I |
Summary of EM&A activities in the Reporting Period |
Table II |
Summary of Exceedance in the Reporting Period |
Table 1.1 |
Status of Environmental License, Notifications and Permits |
Table 2.1 |
Summary of Proposed Air Quality Monitoring Location |
Table 3.1 |
Summary of Impact Water Quality Monitoring Stations |
Table 3.2 |
Parameters measured in the Impact Water Quality Monitoring |
Table 3.3 |
Water Quality Monitoring Equipment |
Table 3.4 |
Method for Laboratory Analysis for Water Samples |
Table 3.5 |
Detection Limits and Precision for Water Quality Determinates |
Table 3.6 |
Summary of Exceedance Records of Water Quality Monitoring |
Table 3.7 |
Summary of Exceedance Records of Water Quality Monitoring |
Table 3.8 |
Derived Dry Season Action and Limit Levels for Water Quality |
Table 5.1 |
Summary of Site Inspections and Recommendations |
List of Figures
Figure 1 |
|
Figure 2.1 |
|
Figure 3.1 |
List of Appendices
Appendix A |
|
Appendix B |
|
Appendix C |
|
Appendix D |
|
Appendix E |
|
Appendix F |
|
Appendix G |
|
Appendix H |
|
Appendix I |
|
Appendix J |
Summary of Complaint, Notification of summons and Prosecution |
Appendix K |
|
Appendix L |
|
Appendix M |
|
|
|
This is the 16th Monthly Environment Monitoring and Audit (EM&A) Report for Hung Shui Kiu/ Ha Tsuen New Development Area Stage 1 Works – Site Formation and Engineering Infrastructure (the Project). This report was prepared by Acuity Sustainability Consulting Limited under Service Contract No. WD/02/2021 Environmental Team for Hung Shui Kiu / Ha Tsuen New Development Area Stage 1 Works – Site Formation and Engineering Infrastructure (hereinafter called the “Service Contract”). This report documents the findings of EM&A works during the reporting period from 1 March to 31 March 2024.
The project construction commenced on 5 December 2022 and the construction phase EM&A programme started on 6 December 2022.
Key Construction Works in the Reporting PeriodA summary of construction activities undertaken during the reporting period is presented below:
Environmental Monitoring and Audit ProgrammeThe monthly EM&A programme was undertaken by the ET in accordance with the Updated EM&A Manual. A summary of the monitoring and audit activities during the reporting period is presented below:
Table I Summary of EM&A activities in the Reporting Period
EM&A Activities |
Date |
Water Quality Monitoring |
2, 5, 7, 9, 12, 14, 16, 18, 20, 22, 25, 27 and 29 March 2024 |
Weekly Environmental Site Inspection |
1, 7, 14, 21 and 26 March 2024 |
A summary of the environmental exceedances of the reporting month is tabulated in Table II.
Table II Summary of Exceedance in the Reporting Period
Environmental Monitoring |
Parameter |
No. of non-project related exceedances |
Total No. of non-project related exceedances |
No. of exceedances related to the the project |
Total No. of exceedance related to the project |
||
AL |
LL |
AL |
LL |
||||
Water Quality |
pH |
0 |
0 |
0 |
0 |
0 |
0 |
DO |
0 |
2 |
2 |
0 |
0 |
0 |
|
Turbidity |
0 |
1 |
1 |
0 |
0 |
0 |
|
SS |
0 |
0 |
0 |
0 |
0 |
0 |
Water Quality
All water quality monitoring was conducted as scheduled in the reporting period. Three (3) limit level exceedances of Dissolved oxygen and Turbidity were recorded during impact water quality monitoring in the reporting period. After investigation, three exceedances are considered as non-project related.
Complaint Log
No environmental complaint was received in the reporting period.
Notification of Summons and Successful Prosecutions
No notification of summons or successful prosecutions was received in the reporting period.
Reporting Changes
There was no reporting change in the reporting period.
Future Key Issues
The major site activities for the coming months are summarized below:
· Site clearance near the proposed soldier pile wall; and
· Construction of Temporary Road.
1 Introduction Project Background
1.1. The Hung Shui Kiu/ Ha Tsuen (“HSK/HT”) NDA occupies an area of approximately 714 ha and is located in the north-western part of the New Territories, midway between Tuen Mun and Tin Shui Wai New Towns. It is bounded by Tin Ying Road/ Ping Ha Road/ Kiu Hung Road to the east, Castle Peak Road to the south, Kong Sham Western Highway (“KSWH”) to the west, and Tin Ha Road, Lau Fau Shan Road and hillslopes along Deep Bay Road to the north. In the wider context, the proposed Project is strategically located in close proximity to Shenzhen, particularly Shenzhen Bay Control Point, Qianhai, and Shekou and efficiently linked with the Greater Pearl River Delta (“PRD”) region. The KSWH and the possible highway connecting the Project area with the Tuen Mun - Chek Lap Kok Link, the Hong Kong International Airport, Kwai Tsing Container Terminals, and the Hong Kong-Zhuhai-Macao Bridge and its Boundary Crossing facilities. New strategic highway infrastructure connecting the Project area with the urban area will also be planned to address the long-term development needs of North West New Territories (“NWNT”). The proposed West Rail Hung Shui Kiu Station (“HSK Station”), with its alignment traversing the Project allows convenient and efficient access to and from the Project area.
1.2. The works under HSK/HT NDA Stage 1 works comprises the construction of interim section of new distributor road (Road D1) (hereinafter call “the Project”) that is a designated project (“DP”) (defined under item A1 in Schedule 2 of the Environmental Impact Assessment Ordinance) connecting the site for the first batch of multi-storey buildings (“MSBs”) at Sites 3-6, 3-7 and 3-8 to the existing Ha Tsuen Roundabout of KSWH.
1.3. The HSK/HT NDA Stage 1 works would be implemented under a fast track programme, involving various complex tasks for providing infrastructure and forming the five development sites to be conducted in parallel, so as to tie in with operation of the development MSBs or other land-efficient means and population intake of the village resite house in 2025 tentatively.
1.4. The scope of works for interim section of Road D1 comprise the followings:
(i) Site formation works for Site 3-7 and Site 3-8;
(ii) Land decontamination works including ground investigation works for Site 3-7 and Site 3-8 and other areas within the boundaries of the site;
(iii) Construction of a district distributor road connecting to the existing interchange underneath KSWH, construction of local roads, widening of a section of Fung Kong Tsuen Road and associated junction/ road improvements; and
(iv) Engineering infrastructure works comprising sewerage works (including a pumping station), drainage works (including a detention pond), waterworks and landscaping works.
1.5. Pursuant to the Environmental Impact Assessment Ordinance (EIAO), the Director of Environmental Protection Department (EPD) granted the Environmental Permits (Nos.: EP-526/2017, EP-527/2017, EP-528/2017, EP-529/2017, EP-530/2017 and EP-531/2017) to the CEDD for the Project. The HSK/HT NDA Stage 1 works comprise the interim section of Road D1 that is governed under Environmental Permit No. EP-528/2017. No other DPs are identified within the scope of HSK/HT NDA Stage 1 works.
1.6. Acuity Sustainability Consulting Limited (ASCL) is commissioned by the Civil Engineering and Development Department (CEDD) to undertake the Environmental Team (ET) services as required and/ or implied, both explicitly and implicitly, in the Environmental Permit (EP), Environmental Impact Assessment (EIA) Report (Register No. AEIAR-203/2016) and Environmental Monitoring and Audit (EM&A) Manual for the Project; and to carry out the EM&A programme in fulfillment of the EIA Report’s, EM&A requirements under Service Contract No. WD/02/2021.
1.7. For the construction phase of the Project, the construction has been commenced on 5 December 2022 and the construction phase EM&A programme was started on 6 December 2022.
1.8. This is the 16th Monthly EM&A Report summarizing the key findings of the construction phase EM&A programme from 1 March to 31 March 2024 (the reporting period) and is submitted to fulfill the requirements in Condition 3.4 of EP-528/2017 and Section 15.3 of the Updated EM&A Manual of the Project.
Construction Works Programme and Construction Works Area1.9. The construction works commenced on 5 December 2022. The construction works programme and the construction works area of the Project are shown in Appendix A and Figure 1 respectively. A summary of construction activities undertaken during this reporting period is presented below:
· No construction activity.
Project Organization1.10. Different parties with different levels of involvement in the Project organization include:
· Project Proponent: Civil Engineering and Development Department (CEDD)
· Supervisor / Engineer’s Representative (ER): Mott MacDonald Hong Kong Limited
· Contractor: China Geo-Engineering Corporation
· Environmental Team (ET): Acuity Sustainability Consulting Limited
· Independent Environmental Checker (IEC): Lam Environmental Services Limited
1.11. The key personnel contact names and numbers are summarized in Appendix B.
License, Notifications and Permits1.12. A summary of the relevant permits, licences, and/ or notifications on environmental protection for this Project is presented in Table 1.1.
Table 1.1 Status of Environmental License, Notifications and Permits
Permit / License No. |
Valid Period |
Status |
|
From |
To |
||
Environmental Permit |
|||
EP-528/2017 |
21/02/2017 |
N/A |
Valid |
Notification pursuant to Air Pollution Control (Construction Dust) Regulation |
|||
467008 |
29/04/2021 |
N/A |
Valid |
Billing Account for Disposal of Construction Waste |
|||
7040500 |
13/05/2021 |
N/A |
Valid |
Registration of Chemical Waste Producer |
|||
467007 |
29/04/2021 |
N/A |
Valid |
Effluent Discharge License under Water Pollution Control Ordinance |
|||
WT00043404-2023 |
26/04/2023 |
30/04/2028 |
Valid |
WT00043642-2023 |
26/04/2023 |
30/04/2028 |
Valid |
WT00044131-2023 |
16/08/2023 |
31/08/2028 |
Valid |
WT10001907-2023 |
07/11/2023 |
30/11/2028 |
Valid |
Construction Noise Permit |
|||
GW-RN0206-24 |
23/02/2024 |
22/05/2024 |
Valid |
GW-RN0278-24 |
19/03/2024 |
17/09/2024 |
Valid |
1.13.
The summary of submission status under
Environmental Permit EP-528/2021 was presented in Appendix K.
2.1. In accordance with the Updated EM&A Manual, the ET shall carry out impact monitoring during the construction phase of the Project. 1-hour Total Suspended Particulates (TSP) should be conducted at a frequency of at least three times in every six days when the highest dust impact occurs.
Monitoring Location2.2. According to the Updated EM&A Manual, the designated locations for impact air quality monitoring are listed in Table 2.1 and their locations are shown in Figure 2.1.
Table 2.1 Summary of Proposed Air Quality Monitoring Location
Station(s) |
EIA ID |
Monitoring Location |
AM23 |
P1032 |
Planned Port Back-up, Storage and Workshop (at Site 3-6) |
AM24 |
P1501 |
Planned Port Back-up, Storage and Workshop (at Site 3-8) |
AM25a |
- |
San Wai Sewage Treatment Plant near the Planned Port Back-up, Storage and Workshop (at Site 3-14) |
2.3. In accordance with Table A2.4 in Appendix A of the Updated EM&A Manual, impact air quality monitoring will be carried out at monitoring stations AM23, AM24 and AM25a after the occupation of the planned port back-up, storage, and workshop.
2.4. As confirmed with the Engineer Representative (ER), the planned port back-up, storages, and workshops at Site 3-6, Site 3-8 and Site 3-14 are not constructed yet. Thus, the impact air quality monitoring will be carried out at AM23, AM24 and AM25a after the construction and occupation of these planned port back-up, storages, and workshops. No air quality monitoring was carried out in this reporting month.
3 Water Quality Monitoring Requirement
3.1. In accordance with the Updated EM&A Manual, impact water quality monitoring should be carried out three days per week at all designated monitoring stations during the construction period. The interval between two sets of monitoring should not be less than 36 hours.
3.2. Replicate in-situ measurements of dissolved oxygen (DO), temperature, turbidity, pH, and suspended solids (SS) for each independent sampling event shall be collected to ensure a robust statistically interpretable database.
Monitoring Location3.3. Impact water quality monitoring was conducted at 6 monitoring stations which are summarized in Table 3.1. The locations of water quality monitoring stations are shown in Figure 3.1.
Table 3.1 Summary of Impact Water Quality Monitoring Stations
Station |
Description |
Easting |
Northing |
U1 |
Upstream Station |
815936 |
834150 |
U2 |
Upstream Station |
816240 |
834009 |
SW |
Gradient station (Downstream of U1 and the construction site of Road D1) |
816304 |
834321 |
HT |
Gradient station (Downstream of U2 and the construction site of Road D1) |
816866 |
834314 |
TKW1 |
Gradient station (Downstream of the construction site of Road D1) |
816563 |
834686 |
TKW |
Gradient station (Downstream of TKW1 and construction site of Road D1) |
816594 |
834690 |
Remark: The original water quality monitoring station DB was surrounded by scrubs and vegetation and located along the steep slope of the hill to south-west of Fung Kong Tsuen. The watercourse runs towards the north of Road D1, but no downstream watercourse was identified. Thus, water quality monitoring station DB is not recommended for this Contract without upstream/ downstream monitoring locations identified. An updated water quality monitoring stations TKW and TKW1 were proposed by the ET and approved by the IEC and the EPD.
Monitoring Parameter and Frequency
3.4. The parameters that have been selected for measurement in-situ and in the laboratory are those that are either determined in the EIA to be those that are likely be affected by the construction works or a standard check on water quality conditions. Parameters to be measured in the impact water quality monitoring are listed in Table 3.2.
Table 3.2 Parameters measured in the Impact Water Quality Monitoring
Parameters |
Units |
Abbreviations |
Frequency |
In-situ measurements |
3 days per week |
||
Dissolved oxygen |
mg/L |
DO |
|
Dissolved oxygen saturation |
% |
DO% |
|
Temperature |
℃ |
- |
|
pH |
- |
- |
|
Turbidity |
NTU |
- |
|
Laboratory measurements |
|||
Suspended Solids |
mg/L |
SS |
3.5. Monitoring location and position, time, sampling depth, weather conditions and any special phenomena or work underway nearby were also recorded.
Sampling Depths & Replication3.6. During impact water quality monitoring, each station was sampled, and measurements/ water samples were taken at three depths, 1 m below the water surface, mid-depth and 1 m above riverbed. If the water depth was less than 6 m, mid-depth might be omitted. If the water depth was less than 3 m, mid-depth sampling only. For in situ measurements, duplicate readings were made at each water depth at each station. Duplicate water samples were collected at each water depth at each station.
Monitoring Equipment3.7. Multi-parameter meters (Model HORIBA U-53 and YSI ProDSS Multi Parameters) were used to measure DO, turbidity, salinity, pH, and temperature.
Dissolved Oxygen and Temperature Measuring Equipment
3.8. The instrument for measuring dissolved oxygen and temperature should be portable and weatherproof complete with cable, sensor, and use DC power source. The equipment was capable of measuring:
· A dissolved oxygen level in the range of 0 – 20 mg/L and 0 - 200% saturation; and
· The temperature within 0 - 45 ℃.
3.9. The equipment had a membrane electrode with automatic temperature compensation complete with a cable.
3.10. Sufficient stocks of spare electrodes and cables were available for replacement where necessary.
Turbidity Measurement Equipment
3.11. Turbidity was measured in situ by using the nephelometric method. The instrument was portable and weatherproof using a DC power source complete with cable, sensor and comprehensive operation manuals. The equipment was capable of measuring turbidity between 0 and 1000 NTU. The probe cable was not less than 25 m in length.
Water Depth Detector
3.12. A portable, battery-operated and handheld echo sounder was used for the determination of water depth at each designated monitoring station.
pH
3.13. The instrument was consisting of a potentiometer, a glass electrode, a reference electrode and a temperature-compensating device. It was readable to 0.1 pH value in a range of 0 to 14. Standard buffer solutions of at least pH 7 and pH 10 were used for calibration of the instrument before and after use.
Sample Container and Storage
3.14. Following collection, water samples for laboratory analysis were stored in high density polyethylene bottles with appropriate preservatives added, packed in the ice (cooled to 4 ℃ without being frozen). The sample were delivered to Acumen Laboratory and Testing Limited (ACUMEN) (HOKLAS Registration No. 241) and analysed as soon as possible after collection of the water samples. Sufficient volume of samples was collected to achieve the detection limit.
Calibration of In Situ Instruments
3.15. The pH meter, DO meter and turbidimeter were checked and calibrated before use. DO meter and turbidimeter were certified before use and subsequently recalibrated at quarterly basis throughout all stage of water quality monitoring programme. Response of sensors and electrodes were checked with certified standard solutions before each use. Wet bulb calibration for a DO meter was carried out before measurement.
3.16. For the on-site calibration of field equipment (Multi-parameter Water Quality System), the BS 1427:2009, “Guide to on-site test methods for analysis of waters” was observed.
Back-up Equipment
3.17. Sufficient stocks of spare parts were maintained for replacements when necessary. Backup monitoring equipment was also be made available so that monitoring can proceed uninterrupted even when some equipment is under maintenance, calibration, etc.
3.18. Table 3.3 summarizes the equipment used in the water quality monitoring programme. Copies of the calibration certificates of multi-parameter water quality monitoring system are shown in Appendix E.
Table 3.3 Water Quality Monitoring Equipment
Equipment |
Brand and Model Number (Serial Number) |
Quantity |
Multi-parameter Water Quality System |
HORIBA U-53 (PPHNOMXY) |
1 |
Multi-parameter Water Quality System |
YSI ProDSS Multi Parameters (15M101091) |
1 |
3.19. Multi-parameter meters (Model HORIBA U-53 and YSI ProDSS Multi Parameters) were used to measure DO, turbidity, salinity, pH and temperature.
Operating/ Analytical Procedures
3.20. At each measurement, two consecutive measurements of DO concentration, DO saturation, salinity, turbidity, pH and temperature were taken. The probes were retrieved out of water after the first measurement and then re-deployed for the second measurement. Where the difference in the value between the first and second readings of each set was more than 25% of the value of the first reading, the reading was discarded, and further readings were taken.
Laboratory Analytical Methods
3.21. Duplicate samples from each independent sampling event are required for all parameters. Analysis of suspended solids were carried out by ACUMEN and comprehensive quality assurance and control procedures in place in order to ensure the quality and consistency of the results. The reporting limit and detection limit are provided in Table 3.4 and the detection limits for the in-situ measurement are shown in Table 3.5.
Table 3.4 Method for Laboratory Analysis for Water Samples
Determinant |
Proposed Method |
Limit of Reporting |
Total Suspended Solid (SS) |
APHA 2540 D |
1.0 mg/L |
Table 3.5 Detection Limits and Precision for Water Quality Parameters
Parameters |
Detection limit |
Accuracy |
Precision |
DO |
0 – 20 mg/L |
± 0.1 mg/L |
25% |
Temperature |
0 – 45 ℃ |
± 0.1 ℃ |
|
pH |
0 – 14 |
± 0.1 |
|
Turbidity |
0 – 1000 NTU |
± 2 NTU |
Decontamination Procedures
3.22. Water sampling equipment used during the course of the monitoring process was decontaminated by manual washing and rinsed with distilled water after each sampling event. All of the disposable components/ accessories were discarded after sampling.
Sampling Management and Supervision
3.23. All sampling bottles were labelled with the sample ID numbers (including the sampling station), and sampling date. Water samples were dispatched to the testing laboratory for analysis as soon as possible. All the collected samples were stored in a cool box to keep the temperature less than 4 ℃ but without frozen. All water samples were handled under chain of custody protocols and relinquished to the laboratory representatives at locations specified by the laboratory.
Quality Control Measures for Sample Testing
3.24. Quality control of laboratory analysis of water samples was performed by ACUMEN for every batch of 20 samples:
· One method blank; and
· One set of QC sample.
Event and Action Plan3.25. Should any non-compliance of the criteria occur, action in accordance with the Event and Action Plan in Appendix H shall be followed. Investigation of the exceedances of environmental quality performance limits should be conducted, and the ET will immediately notify the IEC and the EPD, as appropriate. The notification should be followed up with advice to the IEC and the EPD on the results of the investigation, proposed actions and success of the action taken, with any necessary follow-up proposals.
Results and Observations3.26. All water quality monitoring was conducted as scheduled in the reporting month. The water quality monitoring schedule for this reporting month is shown in Appendix D.
3.27. The monitoring results and graphical presentation of water quality monitoring at the monitoring stations are shown in Appendix F.
3.28. During the reporting month, three (3) limit level exceedances of DO and turbidity were recorded during impact water quality monitoring in the reporting. A summary of exceedance records is presented in Table 3.6 and Table 3.7.
Table 3.6 Summary of Exceedance Records of Water Quality Monitoring
Date |
Station |
Parameter (Unit) |
Depth-averaged Measured Value |
Exceedance |
Exceedances due to the Project (Y/N) |
|
AL |
LL |
|||||
12/03 |
SW |
Dissolved Oxygen (mg/L) |
1.6 |
|
ü |
N |
HT |
1.6 |
|
ü |
N |
||
14/03 |
TKW1 |
Turbidity (NTU) |
24.4 |
|
ü |
N |
Table 3.7 Summary of Exceedance Records of Water Quality Monitoring
Parameter |
No. of non-project related exceedances |
Total No. of non-project related exceedances |
No. of exceedance related to the Project |
Total No. of exceedance related to the Project |
||
AL |
LL |
AL |
LL |
|||
pH |
0 |
0 |
0 |
0 |
0 |
0 |
Dissolved Oxygen |
0 |
2 |
2 |
0 |
0 |
0 |
Turbidity |
0 |
1 |
1 |
0 |
0 |
0 |
Suspended Solids |
0 |
0 |
0 |
0 |
0 |
0 |
3.29. In view of the non-project related exceedances of Action and Limit Levels recorded frequently in December 2022, review of the water quality baseline condition was proposed to reflect the baseline condition during the dry season and to reduce the number of false alarms.
3.30. A baseline water quality monitoring during the dry season was conducted between 6 December 2022 and 30 December 2022. The updated Baseline Monitoring Report was submitted to IEC and verified on 24 March 2023, and the derived dry season Action and Limit Levels was adopted to review the water quality monitoring results during the reporting period.
3.31. The derived dry season Action and Limit Levels for water quality monitoring will be applied to the monitoring period between November and March, and the derived wet season Action and Limit Levels will be applied between April and October. The (dry season) Action and Limit Levels for this reporting period are presented in Table 3.8.
Table 3.8 Derived Dry Season Action and Limit Levels for Water Quality
Parameters |
Action Levels |
Limit Levels |
SW |
||
DO (mg/L) (1) (3) |
2.3 |
2.1 |
Turbidity (NTU) (2) |
22.0 |
22.3 |
SS (mg/L) (2) |
8.8 |
10.5 |
pH |
Less than 6.6 or greater than 8.4 |
Less than 6.5 or greater than 8.5 |
HT |
||
DO (mg/L) (1) (3) |
2.2 |
2.1 |
Turbidity (NTU) (2) |
18.2 |
20.1 |
SS (mg/L) (2) |
7.2 |
7.5 |
pH |
Less than 6.6 or greater than 8.4 |
Less than 6.5 or greater than 8.5 |
TKW1 |
||
DO (mg/L) (1) (3) (4) |
2.1 |
2.0 |
Turbidity (NTU) (2) |
16.4 |
17.6 |
SS (mg/L) (2) |
7.1 |
7.1 |
pH |
Less than 6.6 or greater than 8.4 |
Less than 6.5 or greater than 8.5 |
TKW |
||
DO (mg/L) (1) (3) |
2.2 |
2.2 |
Turbidity (NTU) (2) |
26.0 |
26.7 |
SS (mg/L) (2) |
7.0 |
7.1 |
pH |
Less than 6.6 or greater than 8.4 |
Less than 6.5 or greater than 8.5 |
Notes:
(1) For DO, non-compliance of the water quality limit occurs when monitoring result is lower than the limit.
(2) For Turbidity and Suspended Solids (SS), non-compliance of the water quality limit occurs when monitoring result is higher than the limit.
(3) The derived Action Levels and Limit Levels for dissolved oxygen only apply to mid-depth.
(4) The derived Action and Limit Level for DO at TKW1 come up with the same value at 2.8 mg/L. If monitoring results exceeded 2.8 mg/L, it will be considered as Limit Level exceedance, actions according to the Event and Action Plan will be carried out.
3.32. After confirmation of exceedance of the water quality monitoring results, ET has sent the emails for Notification of Exceedance (NOE) to inform relevant parties (i.e., EPD, ER, IEC and Contractor) about the exceedances. After investigation, three exceedances on 12 and 14 March 2024 are considered as non-project related. Details of the investigation results are shown in Appendix M.
4.1. Waste generated from the Project includes inert construction and demolition (C&D) materials and non-inert C&D wastes in the reporting period. The amount of waste generated by the construction works of the Project during the reporting period is shown in Table 4.1 and the cumulative waste flow table was presented in Appendix I.
Table 4.1 Summary of Waste Generated in the Reporting Period
Month |
Actual Quantities of Inert C&D Materials Generated Monthly |
Actual Quantities of C&D Wastes Generated Monthly |
|||||||||
Total Quantity Generated |
Hard Rock and Large Broken Concrete |
Reused in the Contract |
Reused in other Projects |
Disposed as Public Fill |
Imported Fill |
Metals |
Paper / Carboard Packing |
Plastics |
Chemical Waste |
Others e.g., general refuse |
|
(in ‘000m3) |
(in ‘000m3) |
(in ‘000m3) |
(in ‘000m3) |
(in ‘000m3) |
(in ‘000m3) |
(in ‘000kg) |
(in ‘000kg) |
(in ‘000kg) |
(in ‘000kg) |
(in ‘000m3) |
|
Mar 2024 |
0.000 |
0.000 |
0.000 |
0.000 |
0.000 |
0.000 |
0.000 |
0.000 |
0.000 |
0.000 |
0.010 |
4.2. Construction and demolition (C&D) materials sorting was carried out on site. Sufficient receptacles were provided for general refuse collection and sorting. Excavated inert C&D materials would be reused to minimize the disposal of C&D waste to public fill.
4.3. The Contractor is advised to minimize the waste generated through recycling or reusing. All applicable mitigation measures stipulated in the Updated EM&A Manual and waste management plans shall be fully implemented.
5.1. Site inspections were carried out by the ET on a weekly basis to monitor the implementation of proper environmental pollution control mitigation measures for the Project. During the reporting period, site inspections were carried out on 1, 7, 14, 21 and 26 March 2024. A joint IEC site inspection was carried out on 1 March 2024.
5.2. Bi-weekly landscape and visual site audits were carried out by a Registered Landscape Architect (RLA) on 1, 14 and 26 March 2024. No particular observation was recorded in this reporting period.
5.3. During site inspection in the reporting period, no non-conformance was identified. Key observations and reminders during the site inspection and landscape and visual site audit are described in Table 5.1.
Table 5.1 Summary of Site Inspections and Recommendations
Inspection Date |
Key Observation / Reminders |
Follow-up Action |
1 Mar 2024 |
No major environmental deficiency was observed during the site inspection. |
Nil |
7 Mar 2024 |
No major environmental deficiency was observed during the site inspection. |
Nil |
14 Mar 2024 |
No major environmental deficiency was observed during the site inspection. |
Nil |
21 Mar 2024 |
No major environmental deficiency was observed during the site inspection. |
Nil |
26 Mar 2024 |
No major environmental deficiency was observed during the site inspection. |
Nil |
5.4.
According to the
EIA Report, EP and the Updated EM&A Manual, the mitigation measures
detailed in the documents are recommended to be implemented during the
construction phase. A summary of the
Project Implementation Schedule is provided in Appendix C.
6.1. Two (2) limit level exceedances of DO and one (1) limit level exceedance of turbidity were recorded during impact water quality monitoring in the reporting period. After investigation, three exceedances are considered as non-project related. Details of the investigation results are presented in Appendix M.
6.2. Should the monitoring results of the environmental monitoring parameters at any designated monitoring stations indicate that the Action/ Limit Levels are exceeded, the actions in accordance with the Event and Action Plans in Appendix H would be carried out.
6.3. Bi-weekly landscape and visual site audits were carried out by a Registered Landscape Architect (RLA) on 1, 14 and 26 March 2024. No particular observation was recorded during the audits.
6.4. Should the audit results indicate any nonconformity, the actions in accordance with the Event and Action Plans in Appendix H would be carried out.
Summary of Environmental Non-Compliance6.5. No environmental non-compliance was recorded in the reporting period.
Summary of Environmental Complaint6.6. No environmental complaint was received in the reporting period. The Cumulative Complaint Log is presented in Appendix J.
Summary of Environmental Summon and Successful Prosecution6.7. There was no successful environmental prosecution or notification of summons received since the Project commencement. The Cumulative Log for environmental summon and successful prosecution is presented in Appendix J.
7 Future Key Issues
7.1. Works to be undertaken in the next reporting period are summarized below:
· Site clearance near the proposed soldier pile wall; and
· Construction of Temporary Road.
7.2. Potential environmental impacts arising from the above construction activities are mainly associated with construction dust impact, noise impact, water quality impact and waste management.
Recommendation7.3. The key environmental mitigation measures for the Project in the coming reporting period associated with above construction activities will include:
Dust
· Regular watering to reduce dust emissions from exposed site surface;
· Stockpile of dusty materials shall be covered entirely by impervious sheeting;
· Provide vehicles washing facilities at all site exits to wash away any dusty materials from vehicle body;
· NRMM Labels should be displayed on the applicable equipment on site by the Contractor;
· Provision of water sprinklers along the haul road for dust suppression; and
· All vehicle and plant should be cleaned before they leave a construction site.
Noise
· Only well-maintained plant should be operated on-site, and plant should be maintained regularly during the construction programme;
· Quality Powered Mechanical Equipment (QPME) should be adopted as far as possible.
Water Quality
· No effluent discharge would be allowed before acquisition of the effluent discharge license;
· Surface run-off from construction sites should be discharged into stormwater drains via adequately designed sand/ silt removal facilities;
· Channels/ earth bunds/ sandbags barriers should be provided on site to properly direct stormwater to silt removal facilities;
· Silt removal facilities, channels and manholes should be maintained, and the deposited silt and grit should be removed regularly;
· Open stockpiles of construction materials on sites should be covered with tarpaulin or similar fabric during rainstorms;
· Perimeter channels should be provided on site boundaries where necessary to intercept stormwater run-off from outside the site so that it will not wash across the site;
· Catchpits and perimeter channels should be constructed in advance of site formation works and earthworks.
Waste Management
· Provision of sufficient waste disposal points and regular collection of waste;
· Regular cleaning and maintenance programme for drainage system; and
· Chemical containers shall be stored with drip tray underneath.
Landscape and Visual
· Construction activities shall be carefully designed to minimize impact on existing retained trees.
7.4. The construction programme for the Project for the next reporting period is presented in Appendix A.
8 Conclusions and Recommendations Conclusion
8.1. This Monthly EM&A Report presents the EM&A works during the reporting period from 1 March to 31 March 2024 in accordance with the Updated EM&A Manual.
8.2. All water quality monitoring was conducted as scheduled in the reporting month. Two (2) limit level exceedances of DO and One (1) limit level exceedance of turbidity were recorded during impact water quality monitoring in the reporting period. After investigation, three exceedances are considered as non-project related.
8.3. Environmental site inspections were conducted on 1, 7, 14, 21 and 26 March 2024 by the ET in the reporting period.
8.4. No environmental complaint was received in the reporting period.
8.5. No notification of summons and prosecution was received in the reporting period.
8.6. The ET will keep track on the construction works to confirm compliance of environmental requirements and the proper implementation of all necessary mitigation measures.
8.7. No change to the EM&A programme was made in this reporting period.
Comments/ Recommendations8.8. No further comment or recommendation was provided in this Monthly EM&A Report.