Revision History

Rev.

Description of Modification

Date

First Issue for Comments

15/12/2023

Revised according to comment

19/12/2023

Revised according to comment

19/12/2023

EXECUTIVE SUMMARY

Introduction

A1. The Project, Design, Build and Operate First Stage of Tseung Kwan O Desalination Plant (TKODP), is a Designated Project under the Environmental Impact Assessment Ordinance (Cap. 499) (EIAO) and is currently governed by a Further Environmental Permit (EP No. FEP - 01/503/2015/A) for the construction and operation of the Contract.

A2. In accordance with the Environmental Monitoring and Audit (EM&A) Manual for the Contract, EM&A works for marine water quality, noise, waste management and ecology should be carried out by Environmental Team (ET), Acuity Sustainability Consulting Limited (ASCL), during the construction phase of the Contract.

A3. This is the 45th Monthly EM&A Report, prepared by ASCL, for the Contract summarizing the monitoring results and audit findings of the EM&A programme at and around Tseung Kwan O Area 137 (TKO 137) during the reporting period from 1 November to 30 November 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 activities carried out in this reporting period for the Contract included the followings:

Administration Building

- Carrying out the floor tiles works at G/F

- Construction of External wall painting works

- Construction of block wall in the pipe duct

- Installation of building services, cable laying, electrical switchboard, Pressure Test, testing and commissioning of electrical switchboard

Chemical building

- Landscape work at roof

- Repairing the defects inside the dangerous store

- Defect rectification

Main Electrical & Central Chiller Plant Building

- Installation of Roof Tile for Fuel Tank Room

- Minor Installation of building services, electrical switchboard, cable laying, Pressure Test

ActiDAFF

- Underground utility construction work

- Installation of access opening covers for filtered water tank

- Carrying out finishing works for staircase no. 3

- Minor Installation of mechanical equipment, piping system, building services, electrical switchboards and cable laying, fiber-reinforced plastic cover Installation

Product Water Storage Tank Building

- Installation of Cat Ladders in Water Tank A

- Sealing slab opening in water Tank A

- Re-construction of Wall PW8 in Water Tank A

- Installation of building services, cable laying, Installation of mechanical equipment, steel pipe, Pressure Test

- Underground utility construction

- Structure Construction

OSCG Building

- Installation of Roller Shutters and Window

- Protective Coating for dangerous goods Rooms

- Installation of building services, mechanical equipment and cable

- Placing Soil Mix at Roof

Reverse Osmosis Building

- Installation of Handrailings

- Installation of Roller Shutters

- Installation of Glass Canopy and Glass House

- Underground utility construction work

- Installation of building services, electrical switchboard, cable laying, Minor Installation of mechanical equipment and steel pipe and GRP pipe and raised

floor, testing and commissioning

Post Treatment Building

- Installation of Cat Ladders in Water Tanks

- Placing Soil Mix at Roof

- Forming Opening at Top of Water Tank for Rescue Opening

- Installation of building services, Installation of mechanical equipment and piping system, Pressure Test

Inspection corridor

- Construction of roof tiling works

- Installation of steel balustrade at roof

- Installation of Movement Joints

- Installation of glass window

- Installation of building services, Lift Installation

CO2 Tanks

- Installation of pipes and electrical wiring, testing and commissioning Combined Shaft and Pump room

- Internal finishing, Grating; window; Louvre Installation Other

- Glass Roof and Glass Canopy installation at elevated walkway

- Security Fence footing construction work

- Manhole 5 GRP Installation work

- Underground utility rectification work

- Road Construction

- Footpath Construction

- Landscape Construction

- Irrigation System Construction

- Water Pressure Test for FS and PL system

A6. The major environmental impacts brought by the above construction works include:

- Construction dust and noise generation from construction works, excavation works and pipe piling driving works;

- Waste generation from the construction activities; and

A7. The key environmental mitigation measures implemented for the Contract in this reporting period associated with the above construction works include:

- Dust suppression by regular wetting and water spraying for construction works;

- Reduction of noise from equipment and machinery on-site and regular inspection to machinery and plants/vehicles on-site to ensure proper functioning;

- Deployment of silt curtain at the marine areas; and

- Sorting and storage of general refuse and construction waste; and

Summary of exceedance & investigation & follow-up

A8. No noise monitoring was conducted during the reporting period since there are no Contract -related construction activities undertaken within a radius of 300m from the monitoring locations. No exceedance of the action Level was recorded during the reporting period.

A9. The marine water quality programme was ceased from 1 September 2023 due to the completion of marine-related construction works.

A10. Four (4) of dechlorinated effluent sample were taken in contact tank/ product water tank.

A11. No TRC exceedance of action or limit levels was obtained during the discharge of dechlorinated effluent.

A12. In this reporting period, 78 times of landfill gas monitoring were conducted at TKO Area 137 (Ch1+340 - Ch1+600). No action or limit level exceedance was recorded during the reporting period.

A13. Joint site inspections of the construction work by ET and IEC were carried out on 7, 14, 21 and 27 November 2023 to audit the mitigation measures implementation status. Reminders were recorded in the site inspection checklists and provided to the contractors together with the appropriate follow-up actions where necessary.

Complaint Handling and Prosecution

A14. No environmental complaint, notification of summons and prosecution was received in the reporting period.

Reporting Change

A15. There was no change to be reported that may affect the on-going EM&A programme.

Summary of Upcoming Key Issues and Key Mitigation Measures

A16. Key activities anticipated in the next reporting period for the Contract will include the followings:

Administration Building

- Carrying out the floor tiles works at G/F

- External wall painting works

- Construction of block work for pipe duct

- Installation of building services, cable laying, electrical switchboard, testing and commissioning

Chemical building

- Installation of leakage collection pit cover

- Underground utility construction work

- Landscape work at roof

- Defect rectification

Main Electrical & Central Chiller Plant Building

- Installation of chillers, building services, electrical switchboard and cable laying

- Installation of Roof Tile for Fuel Tank Room

ActiDAFF

- Underground utility construction work

- Installation of access opening cover

- Construction of staircase no 2

- Installation of mechanical equipment, piping system, installation of building

services, electrical switchboards and cable laying, fiber-reinforced plastic cover Installation

Product Water Storage Tank Building

- Installation of Cat Ladders in Water Tank A

- Sealing slab opening in water Tank A

- Re-construction of Wall PW8 in Water Tank A

- Installation of metal cladding, building services, cable laying, mechanical equipment, steel pipe

- Underground utility construction

OSCG Building

- Protective Coating for dangerous goods Rooms

- Placing Soil Mix at Roof

- Installation of Metal Cladding (at East Side) and Roller Shutters and Window

- Underground utility construction work

- Installation of building services, mechanical equipment and cable laying, testing and commissioning

Reverse Osmosis Building

- Installation of building services, electrical switchboard, cable laying, Installation of mechanical equipment, steel pipe, GRP pipe, raised floor, testing and commissioning

- Installation of metal cladding, handrailing, roller shutters, glass canopy and

glass house

- Underground utility construction work

- Construction of RC External Wall for Male Toilet

Post Treatment Building

- Installation of building services, Installation of mechanical equipment and piping system, Pressure Test

- Underground utility construction work

- Installation of Cat Ladders in Water Tanks

- Installation of Metal Cladding

- Placing Soil Mix at Roof

Inspection corridor

- Installation of building services, Lift installation

- Construction of roof tiling works and staircases no. 2

- Installation of Movement Joints and glass window

CO2 Tanks

- Installation of pipes and electrical wiring, testing and commissioning Combined Shaft and Pump room

- Finishing, Grating; window; louvre installation Other

- Watermain works at CLP 132 kV Substation

- Staircases construction; Steel Bridge assembly and installation at elevated

walkway

- Road Construction, Footpath Construction, Landscape Construction, Irrigation System Construction, Water Pressure Test for FS and PL system in Zone A, B, C

- Structure Construction, steel fence erection of Wave Deflector Wall at seawall area

A17. The major environmental impacts brought by the above construction works will include:

- Construction dust and noise generation from excavation and construction works;

- Waste generation from construction activities

A18. The key environmental mitigation measures for the Contract in the coming reporting period associated with the above construction works will include:

- Reduction of noise from equipment and machinery on-site;

- Dust suppression by regular wetting and water spraying for construction works and at main haul road;

- Sorting and storage of general refuse and construction waste; and

- Deployment of silt curtain at the marine areas.

1. BASIC CONTRACT INFORMATION

Background

1.1. The Acciona Agua, S.A. Trading, Jardine Engineering Corporation, Limited and China State Construction Engineering (Hong Kong) Limited as AJC Joint Venture (AJCJV) is contracted to carry out the Design, Build and Operate First Stage of Tseung Kwan O Desalination Plant (DPTKO) under Contract No. 13/WSD/17 (the Contract).

1.2. Acuity Sustainability Consulting Limited (ASCL) is commissioned by AJCJV to undertake the Environmental Team (ET) services as required and/or implied, both explicitly and implicitly, in the Environmental Permit (EP), Environmental Impact Assessment Report (EIA Report) (Register No. AEIAR-192/2015) and Environmental Monitoring and Audit Manual (EM&A Manual) for the Contract; and to carry out the Environmental Monitoring and Audit (EM&A) programme in fulfillment of the EIA Report’s EM&A requirements and Contract No. 13/WSD/17 Specification requirements.

1.3. Pursuant to the Environmental Impact Assessment Ordinance (EIAO), the Director of Environmental Protection granted the Environmental Permit (No. EP-01/503/2015) and Variation of Environmental Permit (No. EP-01/503/2015/A) to Water Supplies Department (WSD); and granted the Further Environmental Permit (No. FEP- 01/503/2015/A) to AJCJV for the Contract.

The Reporting Scope

1.4. This is the 45th Monthly EM&A Report for the Contract which summarizes the key findings of the EM&A programme during the reporting period from 1 November to 30 November 2023.

Contract Organization

1.5. The Contract Organization structure for Construction Phase is presented in Figure 1.1.

Figure 1.1 Contract Organization Chart

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

Table 1.1 Contact Details of Key Personnel

Party

Position

Name

Telephone no.

Contract Proponent (Water Supplies Department)

SE/CM2

Milton Law

2634-3573

Supervising Officer (Binnies Hong Kong Limited)

Project Manager

Christina Ko

2608-7302

Chief Resident Engineer

Roger Wu

6343-1002

The Jardine Engineering Corporation, Limited, China State Construction Engineering (Hong Kong) Limited and Acciona Agua, S.A. Trading

Project Manager

Stephen Yeung

2807-4665

Environmental Monitoring Manager

Brian Kam

9456-9541

Acuity Sustainability Consulting Limited

Environmental Team Leader

Jacky Leung

2698-6833

ANewR Consulting Limited

Independent Environmental Checker (IEC)

Mr. CHAN Yi

Chun, Alex

2618-2831

Summary of Construction Works

1.7. Details of the major construction activities undertaken in this reporting period are shown below. The master programme is presented in Appendix A.

1.8. Key activities carried out in this reporting period for the Contract included the followings:

Administration Building

- Carrying out the floor tiles works at G/F

- External wall painting works

- Construction of block work for pipe duct

- Installation of building services, cable laying, electrical switchboard, testing and commissioning

Chemical building

- Installation of leakage collection pit cover

- Underground utility construction work

- Landscape work at roof

- Defect rectification

Main Electrical & Central Chiller Plant Building

- Installation of chillers, building services, electrical switchboard and cable laying

- Installation of Roof Tile for Fuel Tank Room

ActiDAFF

- Underground utility construction work

- Installation of access opening cover

- Construction of staircase no 2

- Installation of mechanical equipment, piping system, installation of building services, electrical switchboards and cable laying, fiber-reinforced plastic cover Installation

Product Water Storage Tank Building

- Installation of Cat Ladders in Water Tank A

- Sealing slab opening in water Tank A

- Re-construction of Wall PW8 in Water Tank A

- Installation of metal cladding, building services, cable laying, mechanical equipment, steel pipe

- Underground utility construction

OSCG Building

- Protective Coating for dangerous goods Rooms

- Placing Soil Mix at Roof

- Installation of Metal Cladding (at East Side)

- Installation of Roller Shutters and Window

- Underground utility construction work

- Installation of building services, mechanical equipment and cable laying, testing and commissioning

Reverse Osmosis Building

- Installation of building services, electrical switchboard, cable laying, Installation of mechanical equipment, steel pipe, GRP pipe, raised floor, testing and commissioning

- Installation of metal cladding, handrailing, roller shutters, glass canopy and glass house

- Underground utility construction work

- Construction of RC External Wall for Male Toilet

Post Treatment Building

- Installation of building services, Installation of mechanical equipment and piping system, Pressure Test

- Underground utility construction work

- Installation of Cat Ladders in Water Tanks and Metal Cladding

- Placing Soil Mix at Roof

Inspection corridor

- Installation of building services, Lift installation

- Construction of roof tiling works and staircases no. 2

- Installation of Movement Joints and glass window

CO2 Tanks

- Installation of pipes and electrical wiring, testing and commissioning Combined Shaft and Pump room

- Finishing, Grating; window; louvre installation

Other

- Watermain works at CLP 132 kV Substation

- Staircases construction; Steel Bridge assembly and installation at elevated walkway

- Road Construction, Footpath Construction, Landscape Construction, Irrigation System Construction, Water Pressure Test for FS and PL system in Zone A, B, C

- Structure Construction, steel fence erection of Wave Deflector Wall at

seawall area

1.9. A summary of the valid permits, licences, and/or notifications on environmental protection for this Contract is presented in Table 1.2.

Table 1.2 Summary of the Status of Valid Environmental Licence, Notification, Permit and Documentations

Permit/ Licences	Valid Period		Status	Remark
	From	To
Environmental Permit
EP-503/2015/A	Throughout the Contract		Valid	-
FEP - 01/503/2015/A	Throughout the Contract		Valid	-
Notification of Construction Works under the Air Pollution Control (Construction Dust) Regulation (Form NA)
451539	Throughout the Contract		Valid	-
Billing Account for Disposal of Construction Waste
7036276	Throughout the Contract		Valid	-
Chemical Waste Producer Registration
5213-839-A2987-01	Throughout the Contract		Valid	-
Wastewater Discharge Licence (Land and Marine works)
WT00035775-2020	23/08/2021	31/07/2025	Valid	-
WT00044188-2023	16/06/2023	30/06/2028	Valid	For Plant T&C and operation
Construction Noise Permit
GW-RE0640-23	22/06/2023	21/12/2023	Valid

1.10. The status for all environmental aspects is presented in Table 1.3.

Table 1.3 Summary of Status for Key Environmental Aspects under the EM&A Manual

Parameters	Status
Water Quality
Baseline Monitoring under EM&A Manual	The baseline water quality monitoring was conducted between 12 May 2020 to 6 Jun 2020.
Impact Monitoring	Ceased from 1 September 2023
Impact Monitoring of Effluent Discharge from Main Disinfection	On-going
Noise
Baseline Monitoring	The baseline noise monitoring result has been reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4
Impact Monitoring	Completed
Waste Management
Mitigation Measures in Waste Management Plan	On-going
Landfill Gas
Regular Monitoring when construction works are within the 250 m Consultation Zone	On-going
Environmental Audit
Site Inspection covering Measures of Air Quality, Noise Impact, Water Quality, Waste, Ecological Quality, Fisheries, Landscape and Visual	On-going

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

1.12. 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 Contract during the reporting period is provided in Appendix C.

2. NOISE

Monitoring Requirements

2.1. 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.

2.2. Construction noise level were 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. Construction works would follow stipulations of the valid Construction Noise Permits if works had to be conducted during restricted hours or public holidays. Table 2.1 summarizes the monitoring parameters, frequency, and duration of the impact noise monitoring.

Table 2.1 Noise Monitoring Parameters, Time, Frequency and Duration

Time	Duration	Interval	Parameters
	Day time:	Continuously in
Daytime:	0700-1900	Leq 5min/Leq 30min	Leq 30min
0700-1900	(during normal weekdays)	(average of 6 consecutive Leq 5min)	L10 30min & L90 30min

Monitoring Locations

2.3. The monitoring locations were normally 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.

2.4. 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 Sensitive Receivers

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

2.5. Three noise monitoring locations for impact monitoring at the nearby sensitive receivers are shown in Figure 2.1-2.3.