Monitoring Activities	Frequency
Daytime Noise monitoring	13 times
Landfill Gas Monitoring	1674 times
Environmental Site Inspection	14 times

1.1. Background

1.1.1. 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 fresh water 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.

1.1.2. Pursuant to the Environmental Impact Assessment Ordinance (EIAO), the Director of Environmental Protection granted the Variation of Environmental Permit (No. EP-503/2015/A) to Water Supplies Department (WSD) for the Project on 26 January 2018.

1.1.3. The scope of the Contract may be considered in brief, to consist of the laying of about 10km long 1200mm diameter fresh water mains and the associated works along the alignment of the Project as shown with the overall view in Appendix A.

1.2. The Reporting Scope

1.2.1. This is the 14^th Quarterly EM&A Report for the Project which summarizes the key findings of the EM&A programme during the reporting period from 1 November 2021 to 31 January 2022.

1.2.2. The Project Organization structure for the Construction Phase is presented in Appendix B.

1.2.3. Contact details of the key personnel are presented in Table 1.1 below:

Table 1.1 Contract Details of 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

1.3. The Reporting Scope

1.3.1. Details of the major construction works undertaken in this reporting quarter are shown in Table 1.2 and Appendix D. The construction programme is presented in Appendix C.

Table 1.2 Summary of Construction Works Undertaken in the Reporting Quarter

Location	Location	Works Conducted in the reporting quarter
Portion H of the Project Site	TKO 137 Pit A	· Site clearance for pipe jacking works were conducted. · Preparation works of pipe installation inside sleeve pipe between Pit 137A to Pit 137C were conducted. · Pipe installation works inside sleeve pipe between Pit 137A to Pit 137C will be conducted.
	TKO 137 Pit B
	TKO 137 Pit C
Portion J of the Project Site	Wan Po Rd – Workfront 1	· Pipe trench excavation and pipe laying were in-progress. · Mini piling works for ELS of receiving pit 1 construction · Curtain grouting works for the receiving pit 1
	Wan Po Rd – Workfront 2	· Mini piling works for ELS of jacking pit construction · Curtain grouting for mini piling works of jacking pit 2 · Excavation and ELS works for jacking pit 2
	Wan Po Rd – Workfront 3	· Pipe trench excavation and pipe laying
	Wan Po Rd – Workfront 4	· Pipe trench excavation and pipe laying
	Wan Po Rd – Pit A	· Remedial works for pit
	Wan Po Rd – Pit B	· Preparation works for TBM pipe jacking
	Wan Po Rd – Pit D	· Completion of Pit D construction. · Preparation works for TBM pipe jacking · MTBM pipe jacking
	Shek Kok Road – Hand-shield	· Modification of existing retaining wall · Construction of wing wall
	Landfill Stage 1 – Area A	· Pipe trench excavation and pipe laying · Plate load test was conducted.
	Pet Garden’s Road	· Pipe trench excavation and pipe laying
	Landfill Stage 1 – Area B	· Trench excavation and pipe laying were in-progress.
	Pung Loi Road – Pit WPR1	· Sheetpile driving works for pit ELS · Excavation and ELS works for jacking
	Roundabout – Pit G1A	· Pit excavation and ELS works · Complete receiving pit construction
	Velodrome – Pit K	· Preparation works for pipe laying · Pipe installation works inside sleeve pipe between Pit K to Pit L
	Velodrome – Pit L-M	· Trench excavation and pipe laying works · Pipe installation inside sleeve pipe between Pit M1 to Pit M2 · Hand-shield pipe jacking works were conducted.
	Velodrome – Pit O to Pit N	· Trench excavation and pipe laying · Site clearance works
	Velodrome – Pit O to Pit P	· Site setup works for trenchless works · TBM pipe jacking works
	Ling Hong Road – Pit Y	· Grouting works of cavity between sleeve pipe and MS pipe
	Ling Hong Road – Pit R	· Grouting works of cavity between sleeve pipe and MS pipe
	Mau Wu Tsai – Workfront 1	· Trench excavation and pipe laying works
	Mau Wu Tsai – Workfront 2	· Trench excavation and pipe laying works
	Po Lam Road South	· Trench excavation and pipe laying works
	Po Lam Road (C2)	· Pre-drilling works for mini piling of pipe bridge at Location A westside slope
	Po Lam Road (D2)	· Trench excavation and pipe laying works
	Po Lam Road (B4)	· Trench rock breaking works · Trench excavation and pipe laying works
	Tsui Lam Road	· Bamboo platform erection works
	TKO Primary Service Reservoir	· Trench excavation and pipe laying works

1.4. Summary of Construction Works

1.4.1. 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 Valid Environmental Licence, Notification, Permit and Documentations

Permit/ Licences/ Notification	Reference	Validity Period	Remarks
Variation of Environmental Permit	EP no.: EP-503/2015/A	Throughout the Contract	-
Notification of Construction Works under the Air Pollution Control (Construction Dust) Regulation (Form NA)	Ref no.: 423775	Throughout the Contract	-
Chemical Waste Producer Registration	WPN: 5213-839-P3287-01	Throughout the Contract	-
Billing Account for Disposal of Construction Waste	A/C no.: 7029491	Throughout the Contract	-
Water Discharge License	WT00032336-2018	Until 31 Dec 2023	-
Construction Noise Permit (Hong Kong Velodrome)	GW-RE0494-21	From 17 May 2021 until 16 November 2021	Expired in the reporting period
Construction Noise Permit (Hong Kong Velodrome)	GW-RE1219-21	From 14 December 2021 until 1 April 2022	-
Construction Noise Permit (Wan Po Road near Wan O Road and Chun Yat Street, Tseung Kwan O, N.T.)	GW-RE1211-21	From 14 December 2021 until 1 April 2022	-
Construction Noise Permit (Shek Kok Road near Shrewsbury International School Hong Kong, Tseung Kwan O, N.T.)	GW-RE1224-21	From 14 December 2021 until 1 April 2022

1.4.2. 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

Parameters	Status
Noise
Baseline Monitoring	The baseline noise monitoring result has been reported in Baseline Monitoring Report and submitted to EPD under VEP Condition 3.4
Impact Monitoring	13 times of noise impact monitoring were conducted on 4, 12, 18 and 25 November 2021, 1, 8, 17, 21 and 31 December 2021 and 6, 14, 20 and 26 January 2022 at NSR4 Creative Secondary School since projected-related construction activities were undertaken within a radius of 300m from the monitoring location
Waste Management
Mitigation Measures in Waste Management Plan	On-going
Landfill Gas Monitoring
Mitigation Measures	On-going
Monitoring	On-going
Environmental Audit
Site Inspection	On-going

1.4.3. Other than the EM&A works by ET, regular environmental management meetings were conducted in order to enhance environmental awareness and closely monitor the environmental performance of the contractors.

1.4.4. 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 F.

2. NOISE MONIOTRING

2.1. Monitoring Results and Observation

2.1.1. 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.

2.1.2. 13 times of noise impact monitoring were conducted on 4, 12, 18 and 25 November 2021, 1, 8, 17, 21 and 31 December 2021 and 6, 14, 20 and 26 January 2022 at NSR4 Creative Secondary School since projected-related construction activities were undertaken within a radius of 300m from the monitoring location.

2.1.3. No examinations were scheduled in the reporting quarter for NSR4 Creative Secondary School.

2.1.4. Detailed monitoring results are presented in Appendix J. Academic School calendar for the reporting quarter was presented in Appendix K.

2.1.5. No Action and Limit level exceedance of construction noise was recorded in the reporting quarter.

2.1.6. No notification of summons and prosecution related to noise was received in the reporting quarter.

2.1.7. No noise project-related complaints were received in the reporting quarter.

3. WASTE MANAGEMENT

3.1. A total of 4962 m3 of inert C&D materials was collected to the Fill Bank, 9 m3 C&D waste and general refuse were disposed of at Landfill, 0.163 tonnes of paper/ cardboard packaging was recycled and 0 tonnes chemical waste collected by licensed contractor for disposal in the reporting quarter. Waste Flow Table is shown in Appendix E.

4. SUMMARY OF MONITORING EXCEEDANCE, COMPLAINTS, NOTIFICATION OF SUMMONS AND PROSECUTIONS

4.1. No environmental complaint was received in the reporting quarter.

5. EM&A SITE INSPECTION

5.1. Site inspections were carried out on a weekly basis to monitor the implementation of proper environmental pollution control and mitigation measures under the Contract. Detail of site inspection date was listed in Table 5.1.

Table 5.1 Site Inspection Record

Date

Inspected Site Portion

Time

4, 12, 18 and 24 Nov 2021,

2, 9, 16, 23 and 29 Dec 2021 and

6, 13, 20, 25 and 28 Jan 2021

Portion F and J

9:15 am – 12:00 pm

5.2. Three joint site inspections with IEC was carried out on 18 November 2021, 23 December 2021 and 25 January 2022.

5.3. Minor deficiencies were observed during weekly site inspection. Key observations during the site inspections are summarized in Table 5.2.

Table 5.2 Site Observations

Date	Environmental Observations	Follow-up Status
04 November 2021	1. The outfall of the sedimentation tank was installed at the inaccurate level. The Main Contractor was reminded to rectify of which the outfall should be at high level (Pit D) (Wan Po Road 4) 2. The Main Contractor was reminded that no water should be discharged without treatment at Jacking Pit A and Wan Po Road 4. 3. Construction boundaries were not protected by sandbags at Wan Po Road 1. 4. The Main Contractor was reminded that chemicals should be placed on drip tray at Wan Po Road 2. 5. Dusty mitigation measures should be implemented at Wan Po Road 2.	1. The outfall of the sedimentation tank was installed at a correct level and no water was discharged from the construction site. 2. There was no water discharge in work front. 3. Sandbags were added under construction boundaries 4. Chemicals were placed on drip tray. 5. Dusty materials were cleaned.
12 November 2021	1. No NRMM label was observed at the NRMM at Po Lam South Road.	1. The Excavator was changed and NRMN label was added.
18 November 2021	No observations were recorded on the respective day.
24 November 2021	1. The Main Contractor was reminded that no water should be discharged without treatment at Pit D and Jacking Pit A. 2. Construction boundaries were observed not protected by sandbags fully at Pit A, Wan Po Road 1	1. There was no water discharge in work front. 2. Sandbags were added under construction boundaries.
02 December 2021	1. No environmental permit was observed at the site exit/entrance at Pit P. 2. The Main Contractor was reminded that no water should be discharged without treatment at the Hong Kong Velodrome Pit O. 3. The Main Contractor was reminded that 3 side enclosure should be provided for concrete mixing at Pit M at Hong Kong Velodrome. 4. Chemical stain was observed at Pit L at Hong Kong Velodrome.	1. Environmental permit was added. 2. There was no water pumping at construction site. 3. There was no grouting process at pit M. 4. Chemical stain was cleaned.
09 December 2021	1. Construction materials should not be placed at the planter area at Pit D. 2. Dusty materials should not be placed directly next to water barriers to prevent the escape of these materials from the construction site at Pit B 3. The Main Contractor was reminded that no water should be discharged without treatment at Pit B.	1. Construction materials were cleaned. 2. Dusty materials were cleaned. 3. There was no water discharge at site.
16 December 2021	1. Chemicals were observed not placed on a drip tray at Pit X. 2. Environmental permit was not observed at Pit X site entrance or exit.	1. Chemicals were removed. 2. Environmental permit was added at site.
23 December 2021	No major observations were recorded on the respective day.
29 December 2021	1. Gully was not protected by sandbags and geotextile at Wan Po Road 2. 2. Construction boundary was not protected by sandbags fully at Wan Po Road 2 and Wan Po Road 3. 3. Construction materials should not be placed on the planter rack at Wan Po Road 3. 4. Chemical was observed not placing on a drip tray at Wan Po Road 2.	1. Gully was protected by sandbags. 2. Construction boundary was protected by sandbags. 3. Construction materials were removed. 4. Chemical was removed.
6 January 2022	1. Chemicals were observed without a drip tray at Hong Kong Velodrome Portion P. 2. Main Contractor was reminded that no water should be discharged without treatment at Hong Kong Velodrome Portion M.	1. Chemical were removed. 2. Water was discharged with treatment.
13 January 2022	No major observations were reported.
20 January 2022	1. Chemicals were observed without a drip tray at Pit X, Po Lam Road. 2. Regular cleaning of trapped debris at the gully should be conducted at Po Lam Road.	1. Chemicals were removed. 2. The gully was cleaned.
25 January 2022	1. To display Environmental Permit on site exit at TKO 137 Pit B.	1. Environmental Permit was added at site.
28 January 2022	1. Muddy water should be directed, collected and treated properly before discharge, also avoid any untreated water discharge to public area at Pit D. 2. To provide water mitigation measure at Wan Po Road 3. 3. To cover the dusty materials during rainstorm at Wan Po Road 3. 4. Gully should be covered by geotextile and surrounding by sandbags at Wan Po Road 3. 5. No water should be discharge before treatment at Wan Po Road 3.	1. Muddy water was cleaned and collected and treated properly before discharge. 2. Sandbags were surrounding the site boundary to avoid any untreated water flow to public area. 3. The dusty materials were covered during rainstorm 4. Gully was covered properly. 5. No water was discharged at Wan Po Road 3.

5.4. 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. An updated Implementation Status of Environmental Mitigation Measures (EMIS) is provided in Appendix F.

6. LANDFILL GAS MONITORING

6.1. 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. Monitoring was conducted from November 2021 to January 2022.

6.2. Monitoring of oxygen, methane and carbon dioxide was performed for excavations at 1m depth or more within the consultation Zone. In this reporting quarter, 1674 times of monitoring was recorded. Action and Limit Level is provided in Appendix G.

6.3. Monitoring Equipment used in the reporting quarter are summarised in Table 6.1.

6.4. In the reporting quarter, landfill gas monitoring was carried out by the Registered Safety Officer of the Contractor at the excavation locations for 1674 times. The monitoring results and Action Level are provided in Appendix H and Appendix G respectively.

Table 6.1 Landfill Gas Monitoring Equipment

Equipment	Model and Make	Calibration Expiry Date
Portable Gas Detector	QRAE III	27 July 2022
MultiRAE Lite	PGM-6208	06 April 2022
Portable Gas Detector	XT-XWHM-Y-OR	08 June 2022

7. Conclusion and Recommendations

7.1. This is the 14^th quarterly Environmental Monitoring and Audit (EM&A) Summary Report prepared by ASCL. This report presents the EM&A works carried out during the period of 1 November 2021 to 31 January 2022 in accordance with the EM&A Manual and the requirement under EP-503/2015/A.

7.2. 13 times of noise impact monitoring were conducted on 4, 12, 18 and 25 November 2021, 1, 8, 17, 21 and 31 December 2021 and 6, 14, 20 and 26 January 2022 at NSR4 Creative Secondary School since projected-related construction activities were undertaken within a radius of 300m from the monitoring location.

7.3. No examinations were scheduled for NSR4 Creative Secondary School between November 2021 to January 2022. Academic School Calendar can be found in Appendix K.

7.4. No environmental complaint was received in the reporting quarter.

7.5. No landfill gas exceedance was recorded in the reporting quarter.

7.6. No Action/ Limit Level exceedance of construction noise was recorded during the reporting quarter.

7.7. Weekly environmental site inspection was conducted during the reporting quarter. Minor deficiencies were observed during site inspection and were rectified. The environmental performance of the Project was therefore considered satisfactory.

7.8. According to the environmental site inspections performed in the reporting quarter, the Contractor is reminded to pay attention on maintaining site tidiness and proper materials storage . The Contractor is also reminded to consider the treatment of wastewater from the construction site area.

7.9. No notification of summons or prosecution was received since commencement of the Contract.

7.10. The ET will keep track on the construction works to confirm compliance of environmental requirements and the proper implementation of all necessary mitigation measures.

7.11. Statistics on complaints and regulatory compliance are summarized in Appendix I.



1	Revision according to IEC’s comment	31 Mar 2022
0	1^st Submission	23 Mar 2022
Rev.	Description of Modification	Date

Appendix A	Overview of Mainlaying in TKO
Appendix B	Project Organization Chart
Appendix C	Construction Programme
Appendix D	Layout of Major Construction Works Undertaken during the Reporting Quarter
Appendix E	Waste Flow Table
Appendix F	Summary of Implementation Status of Environmental Mitigation
Appendix G	Action and Limit Level for Noise and Landfill Gas
Appendix H	Landfill Gas Monitoring Results
Appendix I	Complaint Log and Regulatory Compliance Proforma
Appendix J	Impact Noise Monitoring Results
Appendix K	Academic School Calendar

EXECUTIVE SUMMARY