Figure 1.1	Locations of Key Construction Activities
Figure 2.1	Locations of Air and Noise Monitoring Stations and Chek Lap Kok Wind Station
Figure 6.1	Vessel based Dolphin Monitoring Transects in Construction, Post-construction and Operation Phases
Figure 6.2	Sightings Distribution of Chinese White Dolphins

Appendices

Appendix A	Environmental Mitigation Implementation Schedule (EMIS) for Construction Phase
Appendix B	Monitoring Schedule
Appendix C	Monitoring Results
Appendix D	Calibration Certificates
Appendix E	Status of Environmental Permits and Licenses
Appendix F	Cumulative Statistics on Exceedances, Environmental Complaints, Notification of Summons and Status of Prosecutions

Abbreviations

3RS	Three-Runway System
AAHK	Airport Authority Hong Kong
AECOM	AECOM Asia Company Limited
AFCD	Agriculture, Fisheries and Conservation Department
AIS	Automatic Information System
ANI	Encounter Rate of Number of Dolphins
APM	Automated People Mover
AW	Airport West
BHS	Baggage Handling System
C&D	Construction and Demolition
CAP	Contamination Assessment Plan
CAR	Contamination Assessment Report
CTCC	Construction Traffic Control Centre
CWD	Chinese White Dolphin
DCM	Deep Cement Mixing
DEZ	Dolphin Exclusion Zone
DO	Dissolved Oxygen
EIA	Environmental Impact Assessment
EM&A	Environmental Monitoring & Audit
EP	Environmental Permit
EPD	Environmental Protection Department
EPSS	Emergency Power Supply Systems
ET	Environmental Team
FCZ	Fish Culture Zone
HDD	Horizontal Directional Drilling
HKBCF	Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities
HKIA	Hong Kong International Airport
HOKLAS	Hong Kong Laboratory Accreditation Scheme
HSF	High Speed Ferry
H₂S	Hydrogen Sulphide
HVS	High Volume Sampler
I-2RS	Interim Two-Runway System
IEC	Independent Environmental Checker
LKC	Lung Kwu Chau
MMHK	Mott MacDonald Hong Kong Limited
MMWP	Marine Mammal Watching Plan
MSS	Maritime Surveillance System
MTRMP-CAV	Marine Travel Routes and Management Plan for Construction and Associated Vessel
NEL	Northeast Lantau
NLMP	North Lantau Marine Park
NWL	Northwest Lantau
PAM	Passive Acoustic Monitoring
PM	Project Manager
SC	Sha Chau
SCZ	Speed Control Zone
SCLKCMP	Sha Chau and Lung Kwu Chau Marine Park
SS	Suspended Solids
SSSI	Site of Special Scientific Interest
STG	Encounter Rate of Number of Dolphin Sightings
SWL	Southwest Lantau
T2	Terminal 2
The Project	The Expansion of Hong Kong International Airport into a Three-Runway System
The SkyPier Plan	Marine Travel Routes and Management Plan for High Speed Ferries of SkyPier
The Manual	The Updated EM&A Manual
TSP	Total Suspended Particulates
WL	West Lantau
WMP	Waste Management Plan

Executive summary

The “Expansion of Hong Kong International Airport into a Three-Runway System” (the Project) serves to meet the future air traffic demands at Hong Kong International Airport (HKIA). On 7 November 2014, the Environmental Impact Assessment (EIA) Report (Register No.: AEIAR-185/2014) for the Project was approved and an Environmental Permit (EP) (Permit No.: EP-489/2014) was issued for the construction and operation of the Project.

This is the 113^th Construction Phase Monthly EM&A Report for the Project which summarises the monitoring results and audit findings of the EM&A programme during the reporting period from 1 to 31 May 2025.

The new North Runway was commissioned in November 2022. Following the completion of reconfiguration works on the Centre Runway, the Three-runway System (3RS) was commissioned on 28 November 2024.

Key Activities in the Reporting Period

The key activities of the Project carried out in the reporting period are located in reclamation areas and existing airport island respectively. Works in the reclamation areas included concourse superstructure works, tunnel works for Automated People Mover (APM) and Baggage Handling System (BHS) and associated works. Meanwhile, works on the existing airport island involved Terminal 2 (T2) expansion works, modification and tunnel works for APM and BHS, utilities works, road and drainage works and excavation works.

EM&A Activities Conducted in the Reporting Period

The monthly EM&A programme was undertaken in accordance with the Manual of the Project. Summary of the monitoring activities during this reporting period is presented as below:

Monitoring Activities	Number of Sessions
1-hour Total Suspended Particulates (TSP) air quality monitoring	30
Noise monitoring	18
Vessel line-transect surveys for operation phase Chinese White Dolphin (CWD) monitoring	2

Environmental auditing works, including weekly site inspections, ad-hoc site inspections of construction works conducted by the ET and bi-weekly site inspections conducted by the Independent Environmental Checker (IEC), audit of SkyPier High Speed Ferries (HSF), audit of construction and associated vessels and audit of implementation of Marine Mammal Watching Plan(MMWP) and Dolphin Exclusion Zone (DEZ) Plan were conducted in the reporting period. Based on the information including ET’s observations, records of Maritime Surveillance System (MSS), and contractors’ site records, it is noted that environmental pollution control and mitigation measures were properly implemented and construction activities of the Project in the reporting period did not introduce adverse impacts to the sensitive receivers.

Snapshots of EM&A Activities in the Reporting Period


Dust Suppression Measure conducted by contractor	Noise Impact Monitoring conducted by ET at Sha Lo Wan House	Checking of Wastewater Treatment Facility by ET

Results of Impact Monitoring

The monitoring works for construction dust, construction noise, construction waste and landscape & visual were conducted during the reporting period in accordance with the Updated EM&A Manual.

Monitoring results of construction dust, construction noise, and construction waste did not trigger the corresponding Action and Limit Levels in the reporting period. No non-conformity was recorded for landscape & visual monitoring in the reporting period.

Summary of Upcoming Key Issues

Reclamation Works:

Contract 3206 Main Reclamation Works

· Installation of precast units, scour apron, armour rocks and miscellaneous works at eastern seawall.

Airfield Works:

Contract 3305 Airfield Ground Lighting System

· Cable laying works; and

· Hardware installation works.

Contract 3310 North Runway Modification Works

· Demolition of bulkhead wall, pavement, drainage works, profile barrier, mechanical, electrical and plumbing works, and architectural, builder's work and finishing works at vehicular tunnels;

· Falsework and formwork;

· Reinforced concrete works;

· Drainage and watermain works; and

· Architectural, builder's work and finishing works at ancillary buildings.

Terminal 2 Concourse and Apron Works:

Contract 3404 Integrated Airport Control System

· System testing works.

Contract 3408 Third Runway Concourse and Apron Works

· Building services and architectural, builder's work and finishing works;

· Cable laying and utilities works;

· Pavement works;

· Operation of concrete batching plant; and

· Reinforced concrete works.

Terminal 2 Expansion:

Contract 3508 Terminal 2 Expansion Works

· Architectural, builder's work and finishing works;

· Electrical and mechanical works;

· Roof works;

· Hard landscape works;

· Link bridge works;

· Emergency vehicular access construction;

· Pier, deck, parapet and abutment construction;

· Road works, drainage and utilities works; and

· Crossroad duct laying works.

Automated People Mover and Baggage Handling System:

Contract 3601 New Automated People Mover System (TRC Line)

· Guide beam installation; and

· Cable containment and cable laying works.

Contract 3602 Existing APM System Modification Works

· Restoration of buffer stop;

· Platform screen door installation works; and

· Steel fixing and formwork to track plinth.

Contract 3603 Baggage Handling System (BHS)

· IT cabling and commissioning;

· Steel work, mechanical, electrical, CCTV and IT installation; and

· Conveyor, electrical and fire service installation.

Airport Support Infrastructure:

Contract 3801 APM and BHS Tunnels on Existing Airport Island

· Slope levelling works; and

· Construction of U-channel

Contract 3802 APM and BHS Tunnels and Related Works

· Lateral supports and backfilling works;

· Box culvert construction and superstructure works;

· APM and BHS Tunnel construction;

· Reinforced concrete works; and

· Architectural, builder's work and finishing works.

Contract 3804 East and Landside Fire Stations

· Superstructure works;

· Electrical and mechanical works;

· Utilities works; and

· Architectural, builder's work and finishing works.

Contract 3805 New Airport District Police Operational Base

· Construction of superstructures and drainage system;

· Installation of fuel tank; and

· Site formation works.

Construction Support:

Contract 3901A Concrete Batching Facility

· Operation of concrete batching plant and material conveyor belt.

Contract 3901B Concrete Batching Facility

· Decommissioning of concrete batching plant.

Contract 3908 Quay Management Services

· Provision of services of site management and logistic control of 3RS quays; and

· Provision of flat top barge and vehicle delivery services between the launching point in Hong Kong and 3RS quays.

Contract 3913 Asphalt Batching Plant

· Operation of asphalt batching plant.

Summary Table

The following table summarises the key findings of the EM&A programme during the reporting period:

	Yes	No	Details	Analysis / Recommendation / Remedial Actions
Breach of Limit Level^		√	No breach of Limit Level was recorded.	Nil
Breach of Action Level^		√	No breach of Action Level was recorded.	Nil
Complaint Received		√	In the previous reporting period, a complaint regarding dust nuisance was received on 25 April 2025.	ET investigated the case and found that mixing works had been carried out at South Wing Level 6 of Terminal 2 Concourse. The contractor enhanced dust mitigation measures and provided worker training. No dust-related issues were observed during ET’s inspections. The case is considered closed.
Notification of any summons and status of prosecutions		√	No notification of summons nor prosecution was received.	Nil
Change that affect the EM&A		√	There was no change to the construction works that may affect the EM&A.	Nil

Note:

^ Only triggering of Action or Limit Level found related to Project works is counted as Breach of Action or Limit Level.

1 Introduction

1.1 Background

On 7 November 2014, the Environmental Impact Assessment (EIA) Report (Register No.: AEIAR-185/2014) for the “Expansion of Hong Kong International Airport into a Three-Runway System” (the Project) was approved and an Environmental Permit (EP) (Permit No.: EP-489/2014) was issued for the construction and operation of the Project.

Airport Authority Hong Kong (AAHK) commissioned Mott MacDonald Hong Kong Limited (MMHK) to undertake the role of Environmental Team (ET) for carrying out the Environmental Monitoring & Audit (EM&A) works during the construction phase of the Project in accordance with the Updated EM&A Manual (the Manual) submitted under EP Condition 3.1 [1]. AECOM Asia Company Limited (AECOM) was employed by AAHK as the Independent Environmental Checker (IEC) for the Project.

The Project covers the expansion of the existing airport into a three-runway system (3RS) with key project components comprising land formation of about 650 ha and all associated facilities and infrastructure including taxiways, aprons, aircraft stands, a passenger concourse, an expanded Terminal 2 (T2), all related airside and landside works and associated ancillary and supporting facilities. The submarine aviation fuel pipelines and submarine power cables also require diversion as part of the works.

Construction of the Project is to proceed in the general order of diversion of the submarine aviation fuel pipelines, diversion of the submarine power cables, land formation, and construction of infrastructure, followed by construction of superstructures.

The new North Runway was commissioned in November 2022. Since then, HKIA has continued to operate with two runways, with the Centre Runway temporarily closed for reconfiguration. The reconfiguration works included relevelling of the runway pavement to tie in with connecting taxiways, constructing new runway entry and exit taxiways, building new wrap-around taxiways at both ends of the runway. With the completion of the reconfiguration works, the flight check and aircraft crash and rescue exercise were completed on the Centre Runway in September and October 2024 respectively. Thereafter, the Three-runway System (3RS) was commissioned on 28 November 2024.

The summary of construction works programme can be referred to Section 1.4.

1.2 Scope of this Report

This is the 113^th Construction Phase Monthly EM&A Report for the Project which summarises the key findings of the EM&A programme during the reporting period from 1 to 31 May 2025.

1.3 Project Organisation

The Project’s organisation structure presented in Appendix B of the Construction Phase Monthly EM&A Report No.1 remained unchanged during the reporting period. Contact details of the key personnel are presented in Table 1.1.

Table 1.1: Contact Information of Key Personnel

Party	Position	Name	Telephone
Project Manager’s Representative (Airport Authority Hong Kong)	Principal Manager, Environmental Compliance, Sustainability	Lawrence Tsui	2183 2734
Environmental Team (ET) (Mott MacDonald Hong Kong Limited)	Environmental Team Leader	Terence Kong	2828 5919
	Deputy Environmental Team Leaders	Heidi Yu	2828 5704
	Deputy Environmental Team Leaders	Ken Wong	2828 5817
Independent Environmental Checker (IEC) (AECOM Asia Company Limited)	Independent Environmental Checker	Roy Man	3729 0380
	Deputy Independent Environmental Checker	Jackel Law	3856 5312

Reclamation Works:

Party

Position

Name

Telephone

Contract 3206

Main Reclamation Works

(ZHEC-CCCC-CDC Joint Venture)

Project Manager

Alan Mong

3763 1352

Environmental Officer

Zhang Bin Wang

3763 1525

Airfield Works:

Party	Position	Name	Telephone
Contract 3305 Airfield Ground Lighting System (ADB Safegate Hong Kong Limited)	Project Manager	Allam Al-Turk	2944 9725
	Environmental Officer	Ivan Ting	9222 9490
Contract 3306 Observation Facility Control System Supporting Interim 2RS and 3RS (Chinney Alliance Engineering Limited)	Project Director	Dennis Yam	9551 9920
	Environmental Officer	Richard Liu	9216 8990
Contract 3308 Foreign Object Debris Detection System (DAS Aviation Services Group)	Project Manager	Jeffrey Yau	9873 7422
Contract 3310 North Runway Modification Works (China State Construction Engineering (Hong Kong) Ltd.)	Project Manager	Kingsley Chiang	9424 8437
	Environmental Officer	Federick Wong	9842 2703

Terminal 2 Concourse and Apron Works:

Party	Position	Name	Telephone
Contract 3402 New Integrated Airport Centres Enabling Works (Wing Hing Construction Co., Ltd.)	Project Manager	Wyman Lau	6112 9753
	Health Safety Environmental Manager	Mike Leung	6625 2550
Contract 3404 Integrated Airport Control System (Shun Hing Systems Integration Co., Ltd.)	Project Manager	Andy Ng	9102 2739
	Environmental Officer	Michael Lo	6228 3926
Contract 3405 Third Runway Concourse Foundation and Substructure Works (China Road and Bridge Corporation – Bachy Soletanche Group Limited – LT Sambo Co., Ltd. Joint Venture)	Project Manager	Francis Choi	9423 3469
	Environmental Officer	Jacky Lai	9028 8975
Contract 3408 Third Runway Concourse and Apron Works (Beijing Urban Construction Group Company Limited and Chevalier (Construction) Company Limited Joint Venture)	Senior HSE Manager	Qian Zhang	5377 7976
	Environmental Officer	Ivan Mak	9422 4805

Terminal 2 Expansion:

Party

Position

Name

Telephone

Contract 3508

Terminal 2 Expansion Works

(Gammon Engineering & Construction Company Limited)

Project Director

Richard Ellis

6201 5637

Environmental Officer

Carrie Kwan

9276 0551

Automated People Mover and Baggage Handling System:

Party	Position	Name	Telephone
Contract 3601 New Automated People Mover System (TRC Line) (CRRC Puzhen Bombardier Transportation Systems Limited and CRRC Nanjing Puzhen Co., Ltd. Joint Venture)	Project Manager	Hongdan Wei	158 6180 9450
	Environmental Officer	H Y Yue	9185 8186
Contract 3602 Existing APM System Modification Works (Niigata Transys Co., Ltd.)	Project Manager	Xia Bo	6586 4950
	Environmental Officer	Y M Tong	5316 9801
Contract 3603 3RS Baggage Handling System (VISH Consortium)	Project Manager	K C Ho	9272 9626
	Environmental Officer	Richard Ng	9802 9577

Airport Support Infrastructure:

Party	Position	Name	Telephone
Contract 3801 APM and BHS Tunnels on Existing Airport Island (China State Construction Engineering (Hong Kong) Ltd.)	Project Manager	Kingsley Chiang	9424 8437
	Environmental Officer	Eunice Kwok	9243 1331
Contract 3802 APM and BHS Tunnels and Related Works (Gammon Engineering & Construction Company Limited)	Project Director	John Adams	6111 6989
	Environmental Officer	Yan Ng	5345 8555
Contract 3804 East and Landside Fire Stations (Beijing Urban Construction Group Company Limited -Beijing Urban Construction International Company Limited - Kin Shing (Leung's)General Contractors Ltd Joint Venture)	Project Manager	Zhang Jinyuan	6708 0506
	Environmental Representative	Karis Lam	6084 9745
Contract 3805 New Airport District Police Operational Base (Chinney Construction Co., Ltd.)	Project Manager	Peter Li	9628 0768
	Environmental Officer	Mike Li	6306 8547

Construction Support:

Party	Position	Name	Telephone
Contract 3721 Construction Support Infrastructure Works (China State Construction Engineering (Hong Kong) Ltd.)	Senior Project Manager	Thomas Lui	9011 5340
	Environmental Officer	John Mak	6273 8703
Contract 3728 Minor Site Works (Shun Yuen Construction Company Limited)	Contract Manager	C K Liu	9194 8739
	Environmental Officer	Dan Leung	6856 5899
Contract 3733 Emergency Repair Service (Wing Hing Construction Co., Ltd.)	Project Manager	Michael Kan	9206 0550
	Safety Health Environmental Manager	Mike Leung	6625 2550
Contract 3901A Concrete Batching Facility (K. Wah Concrete Company Limited)	Project Manager	Benedict Wong	9553 2806
	Environmental Officer	C P Fung	9874 2872
Contract 3901B Concrete Batching Facility (Gammon Construction Limited)	General Manager	Gabriel Chan	2435 3260
	Environmental Officer	Rex Wong	2695 6319
Contract 3908 Quay Management Services (Gitanes – Crown Asia Joint Venture)	Project Manager	Mr. Ian Li	9750 6438
	Environmental Officer	Mr. Tang Kai Fun	9406 3526
Contract 3913 Asphalt Batching Plant (SPR Joint Venture)	Project Manager	Xie Yi Sheng	6580 6005
Contract 3913 Asphalt Batching Plant (SPR Joint Venture)	Environmental Officer	Kenneth Chan	9300 2182

Utilities:

Party

Position

Name

Telephone

132 kV Cable

(CLP Power Hong Kong

Limited / Kum Shing (K.F.)

Construction Company

Limited)

Engineer

Ken Fung

6391 9087

Project Engineer

Kevin Wu

6508 9779

1.4 Summary of Construction Works

The key activities of the Project carried out in the reporting period are located in reclamation areas and existing airport island, respectively. Works in the reclamation areas included concourse superstructure works, tunnel works for APM and BHS and associated works. Meanwhile, works on existing airport island involved T2 expansion works, modification and tunnel works for APM and BHS, utilities works, road and drainage works and excavation works.

The locations of key construction activities are presented in Figure 1.1.

1.5 Summary of EM&A Programme Requirements

The status for all environmental aspects is presented in Table 1.2. The EM&A requirements remained unchanged during the reporting period.

Table 1.2: Summary of Status of All Environmental Aspects under the Updated EM&A Manual

Parameters	EM&A Requirements	Status
Air Quality
Baseline Monitoring	At least 14 consecutive days before commencement of construction work	The baseline air quality monitoring result was reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4.
Impact Monitoring	At least 3 times every 6 days	On-going
Noise
Baseline Monitoring	Daily for a period of at least two weeks prior to the commencement of construction works	The baseline noise monitoring result was reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4.
Impact Monitoring	Weekly	On-going
Water Quality
General Baseline Water Quality Monitoring for reclamation, water jetting and field joint works	Three days per week, at mid-flood and mid-ebb tides, for at least four weeks prior to the commencement of marine works.	The baseline water quality monitoring result was reported in Baseline Water Quality Monitoring Report and submitted to EPD under EP Condition 3.4.
General Baseline Water Quality Monitoring for reclamation, water jetting and field joint works	Three days per week, at mid-flood and mid-ebb tides.	General impact water quality monitoring for water jetting works was completed on 23 May 2017. The impact water quality monitoring was terminated after 31 October 2023.
Initial Intensive Deep Cement Mixing (DCM) Water Quality Monitoring	At least four weeks	The Initial Intensive DCM Monitoring Report was submitted and approved by EPD in accordance with the Detailed Plan on DCM.
Regular DCM Water Quality Monitoring	Three times per week until completion of DCM works.	Due to the completion of all marine-based DCM works within April 2022, regular DCM monitoring was ceased at all monitoring stations starting from 28 April 2022.
Post-construction phase water quality monitoring	Three days per week, at mid-flood and mid-ebb tides for four weeks	The four-week post-construction phase water quality monitoring exercise was commenced on 14 November 2023 and completed on 9 December 2023.
Sewerage and Sewage Treatment
Methodology for carrying out annual sewage flow monitoring for concerned gravity sewer	Methodology to be prepared and submitted to EPD one year before the scheduled commencement of operation of the proposed third runway	The proposed methodology of the annual sewage flow monitoring was approved by EPD. The annual flow monitoring was started from June 2021 and completed in 2022.
Details of the routine Hydrogen Sulphide (H2S) monitoring system for the sewerage system of 3RS	Details to be prepared and submitted to EPD at least one year before commencement of the operation of 3RS	The H2S monitoring was started after the commissioning of the 3RS on 28 November 2024.
Waste Management
Waste Monitoring	At least weekly	On-going
Land Contamination
Supplementary Contamination Assessment Plan (CAP)	At least 3 months before commencement of any soil remediation works.	The Supplementary CAP was submitted and approved by EPD under EP Condition 2.20.
Site Re-appraisal Summary Report for Fire Training Facility	Site Re-appraisal Summary Report for Fire Training Facility	Site Re-appraisal Summary Report for Fire Training Facility was submitted and accepted by EPD.
Contamination Assessment Report (CAR) for Golf Course	CAR to be submitted for golf course	The CAR for Golf Course was submitted and accepted by EPD.
Contamination Assessment Reports (CAR) for Terminal 2 Emergency Power Supply Systems	CAR to be submitted for Terminal 2 Emergency Power Supply Systems	The CARs for Terminal 2 Emergency Power Supply Systems were submitted and accepted by EPD.
Terrestrial Ecology
Pre-construction Egretry Survey Plan	Once per month in the breeding season between April and July, prior to the commencement of Horizontal Directional Drilling (HDD) drilling works.	The Egretry Survey Plan was submitted and approved by EPD under EP Condition 2.14.
Ecological Monitoring	Monthly monitoring during the HDD construction works period from August to March.	The terrestrial ecological monitoring at Sheung Sha Chau was completed in January 2019.
Marine Ecology
Pre-Construction Phase Coral Dive Survey	Prior to marine construction works	The Coral Translocation Plan was submitted and approved by EPD under EP Condition 2.12.
Coral Translocation	-	The coral translocation was completed.
Post-Translocation Coral Monitoring	As per an enhanced monitoring programme based on the Coral Translocation Plan	The post-translocation monitoring programme according to the Coral Translocation Plan was completed in April 2018.
Chinese White Dolphins (CWD)
Baseline Monitoring	6 months of baseline surveys before the commencement of land formation related construction works. Vessel line transect surveys: Two full surveys per month; Land-based theodolite tracking surveys: Two days per month at the Sha Chau station and two days per month at the Lung Kwu Chau station; and Passive Acoustic Monitoring (PAM): For the whole duration of baseline period.	Baseline CWD results were reported in the CWD Baseline Monitoring Report and submitted to EPD in accordance with EP Condition 3.4.
Impact Monitoring	Vessel line transect surveys: Two full surveys per month; Land-based theodolite tracking surveys: One day per month at the Sha Chau station and one day per month at the Lung Kwu Chau station; and PAM: For the whole duration for land formation related construction works.	The construction phase CWD monitoring was completed in December 2023.
Post-construction Phase Monitoring	12 months of post-construction phase CWD monitoring upon the completion of marine construction works. Vessel line transect surveys: Two full surveys per month.	The post-construction phase CWD monitoring was completed in December 2024.
Operation Phase Monitoring	12 months of operation phase CWD monitoring upon full implementation of North Lantau Marine Park. Vessel line transect surveys: Two full surveys per month.	The operation phase CWD monitoring was commenced in January 2025.
Operation Phase Audit	SkyPier High Speed Ferries (HSF) implementation measures: Once every three months for a period of one year upon operation of 3RS. Spill Response Plan implementation measures: Once every six months for a period of one year upon operation of 3RS.	The 2^nd audit was conducted in May 2025. The 1^st audit was conducted in May 2025.
Landscape & Visual
Landscape & Visual Plan	At least 3 months before the commencement of construction works on the formed land of the Project.	The Landscape & Visual Plan was submitted and approved by EPD under EP Condition 2.18.
Baseline Monitoring	One-off survey within the Project site boundary prior to commencement of any construction works	The baseline landscape & visual monitoring result was reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4.
Impact Monitoring	Weekly	On-going
Establishment Works Monitoring	Bi-monthly	On-going
Long Term Management (10 years) Monitoring	Annually	On-going
Environmental Auditing
Regular site inspection	Weekly	On-going
Marine Mammal Watching Plan (MMWP) implementation measures	Monitor and check	On-going
Dolphin Exclusion Zone (DEZ) Plan implementation measures	Monitor and check	On-going
SkyPier High Speed Ferries (HSF) implementation measures	Monitor and check	On-going
Construction and Associated Vessels Implementation measures	Monitor and check	On-going
Silt Curtain Deployment Plan implementation measures	Monitor and check	No Silt Curtain Deployment Plan measures was implemented at C7a after 17 March 2025.
Spill Response Plan implementation measures	Monitor and check	On-going
Complaint Hotline and Email channel	Construction phase	On-going
Environmental Log Book	Construction phase	On-going

Taking into account the construction works in this reporting period, impact monitoring of air quality, noise, waste management and landscape & visual were carried out in the reporting period.

The EM&A programme also involved weekly site inspections and related auditing conducted by the ET for checking the implementation of the required environmental mitigation measures recommended in the approved EIA Report. To promote the environmental awareness and enhance the environmental performance of the contractors, regular environmental management meetings were conducted during the reporting period, which are summarised as below:

● Twelve environmental management meetings for EM&A review with works contracts: 6, 13, 14, 15, 16, 22, 23 & 29 May 2025.

The EM&A programme has been following the recommendations presented in the approved EIA Report and the 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 A.

2 Air Quality Monitoring

Air quality monitoring of 1-hour Total Suspended Particulates (TSP) was conducted three times every six days at two representative monitoring stations in the vicinity of air sensitive receivers in Tung Chung and villages in North Lantau in accordance with the Manual. Table 2.1 describes the details of the monitoring stations. Figure 2.1 shows the locations of the monitoring stations.

Table 2.1: Locations of Impact Air Quality Monitoring Stations

Monitoring Station	Location
AR1A	Man Tung Road Park
AR2	Village House at Tin Sum

2.1 Action and Limit Levels

In accordance with the Manual, baseline air quality monitoring of 1-hour TSP levels at the two air quality monitoring stations were established as presented in the Baseline Monitoring Report. The Action and Limit Levels of the air quality monitoring stipulated in the EM&A programme for triggering the relevant investigation and follow-up procedures under the programme are provided in Table 2.2.

Table 2.2: Action and Limit Levels of Air Quality Monitoring

Monitoring Station	Action Level (mg/m3)	Limit Level (mg/m3)
AR1A	306	500
AR2	298	500

2.2 Monitoring Equipment

Portable direct reading dust meter was used to carry out the air quality monitoring. Details of equipment used in the reporting period are given in Table 2.3.

Table 2.3: Air Quality Monitoring Equipment

Equipment	Brand and Model	Last Calibration Date	Calibration Certificate Provided in
Portable direct reading dust meter (Laser dust monitor)	SIBATA LD-3B-1 (Serial No. 597337)	28 April 2025	Appendix D

2.3 Monitoring Methodology

2.3.1 Measuring Procedure

The measurement procedures involved in the impact air quality monitoring can be summarised as follows:

a. The portable direct reading dust meter was mounted on a tripod at a height of 1.2m above the ground.

b. Prior to the measurement, the equipment was set up for 1 minute span check and 6 second background check.

c. The one hour dust measurement was started. Site conditions and dust sources at the nearby area were recorded on a record sheet.

d. When the measurement completed, the “Count” reading per hour was recorded for result calculation.

2.3.2 Maintenance and Calibration

The portable direct reading dust meter is calibrated every year against high volume sampler (HVS) to check the validity and accuracy of the results measured by direct reading method. The calibration record of the HVS provided in Appendix D of the Monthly EM&A Report No. 103 and the calibration certificates of portable direct reading dust meters listed in Table 2.3 are valid in the reporting period.

2.4 Summary of Monitoring Results

The air quality monitoring schedule of the reporting period is provided in Appendix B.

The air quality monitoring results in the reporting period are summarised in Table 2.4. Detailed impact monitoring results are presented in Appendix C.

Table 2.4: Summary of Air Quality Monitoring Results

Monitoring Station	1-hr TSP Concentration Range (mg/m3)	Action Level (mg/m3)	Limit Level (mg/m3)
AR1A	24 – 62	306	500
AR2	29 – 79	298	500

The monitoring results were within the corresponding Action and Limit Levels at all monitoring stations in the reporting period.

General meteorological conditions throughout the impact monitoring period were recorded. Wind data including wind speed and wind direction for each monitoring day were collected from the Chek Lap Kok Wind Station.

2.5 Conclusion

No dust emission source was observed at the monitoring stations during the monitoring sessions. As the sensitive receivers were far away from the construction activities, with the implementation of dust control measures, there was no adverse impact at the sensitive receivers attributable to the works of the Project.

3 Noise Monitoring

Noise monitoring in the form of 30-minute measurements of L_eq, L₁₀, and L₉₀ levels was conducted once per week between 0700 and 1900 on normal weekdays at four representative monitoring stations in the vicinity of noise sensitive receivers in Tung Chung and villages in North Lantau in accordance with the Manual. Table 3.1 describes the details of the monitoring stations. Figure 2.1 shows the locations of the monitoring stations.

Table 3.1: Locations of Impact Noise Monitoring Stations

Monitoring Station	Location	Type of measurement
NM1A	Man Tung Road Park	Free field
NM2⁽¹⁾	Tung Chung West Development	To be determined
NM3A⁽²⁾	Site Office	Façade
NM4	Ching Chung Hau Po Woon Primary School	Free field
NM5	Village House in Tin Sum	Free field
NM6	House No. 1, Sha Lo Wan	Free field

Notes:

(1) As described in Section 4.3.3 of the Manual, noise monitoring at NM2 will only commence after occupation of the future Tung Chung West Development.

(2) According to Section 4.3.3 of the Manual, the noise monitoring at NM3A was temporarily suspended starting from 1 September 2018 and would be resumed with the completion of the Tung Chung East Development.

3.1 Action and Limit Levels

In accordance with the Manual, baseline noise levels at the noise monitoring stations were established as presented in the Baseline Monitoring Report. The Action and Limit Levels of the noise monitoring stipulated in the EM&A programme for triggering the relevant investigation and follow-up procedures under the programme are provided in Table 3.2.

Table 3.2: Action and Limit Levels for Noise Monitoring

Monitoring Stations	Time Period	Action Level	Limit Level, L_eq(30mins)dB(A)
NM1A, NM2, NM3A, NM4, NM5 and NM6	0700-1900 hours on normal weekdays	When one valid documented complaint is received from any one of the sensitive receivers	75dB(A)⁽¹⁾

Note:

(1) The Limit Level for NM4 is reduced to 70dB(A) for being an educational institution. During school examination period, the Limit Level is further reduced to 65dB(A).

3.2 Monitoring Equipment

Noise monitoring was performed using sound level meter at each designated monitoring station. The sound level meters deployed comply with the International Electrotechnical Commission Publications 651:1979 (Type 1) and 804:1985 (Type 1) specifications. Acoustic calibrator was used to check the sound level meters by a known sound pressure level for field measurement. Details of equipment used in the reporting period are given in Table 3.3.

Table 3.3: Noise Monitoring Equipment

Equipment	Brand and Model	Last Calibration Date	Calibration Certificate Provided in
Integrated Sound Level Meter	Rion NL-52 (Serial No. 00998505)	17 Feb 2025	Appendix D of Monthly EM&A Report No. 111
Integrated Sound Level Meter	Rion NL-52 (Serial No. 01287679)	14 Oct 2024	Appendix D of Monthly EM&A Report No.108
Acoustic Calibrator	Castle GA607 (Serial No. 040162)	17 Feb 2025	Appendix D of Monthly EM&A Report No. 111
Acoustic Calibrator	Casella CEL-120 (Serial No. 2383737)	30 Jun 2024	Appendix D of Monthly EM&A Report No.103

3.3 Monitoring Methodology

3.3.1 Monitoring Procedure

The monitoring procedures involved in the noise monitoring can be summarised as follows:

a. The sound level meter was set on a tripod at least a height of 1.2m above the ground for free-field measurements at monitoring stations NM1A, NM4, NM5 and NM6. A correction of +3dB(A) was applied to the free field measurements.

b. Façade measurements were made at the monitoring station NM3A.

c. Parameters such as frequency weighting, time weighting and measurement time were set.

d. Prior to and after each noise measurement, the meter was calibrated using the acoustic calibrator. If the difference in the calibration level before and after measurement was more than 1dB(A), the measurement would be considered invalid and repeat of noise measurement would be required after re-calibration or repair of the equipment.

e. During the monitoring period, L_eq, L₁₀ and L₉₀ were recorded. In addition, site conditions and noise sources were recorded on a record sheet.

f. Noise measurement results, when higher than the baseline monitoring levels, were corrected with reference to the baseline monitoring levels.

g. Observations were recorded when high intrusive noise (e.g., dog barking, helicopter noise) was observed during the monitoring.

3.3.2 Maintenance and Calibration

The maintenance and calibration procedures are summarised below:

a. The microphone head of the sound level meter was cleaned with soft cloth at regular intervals.

b. The meter and calibrator were sent to the supplier or laboratory accredited under Hong Kong Laboratory Accreditation Scheme (HOKLAS) to check and calibrate at yearly intervals.

Calibration certificates of the sound level meters, and acoustic calibrators used in the noise monitoring listed in Table 3.3 are valid in the reporting period.

3.4 Summary of Monitoring Results

The noise monitoring schedule of reporting period is provided in Appendix B.

The noise monitoring results in the reporting period are summarised in Table 3.4. Detailed impact monitoring results are presented in Appendix C.

Table 3.4: Summary of Construction Noise Monitoring Results

Monitoring Station	Noise Level Range, dB(A) L_{eq (30mins)}	Limit Level, dB(A) L_{eq (30mins)}
NM1A⁽¹⁾	63 - 65	75
NM4^{(1) (3)}	60 - 66	70⁽²⁾
NM5⁽¹⁾⁾	55 - 59	75
NM6^{(1) (3)}	63 - 68	75

Notes:

(1) +3dB(A) Façade correction included;

(2) The limit level will be reduced to 65dB(A) during school examination periods at NM4. No school examination took place during this reporting period.

(3) Some of the noise measurement results were higher than the baseline monitoring levels. To reduce the influence of non-Project related noise on the monitoring results, these measurement results were corrected with reference to the baseline monitoring results.

No complaints were received from any sensitive receiver as listed in Table 3.1 that triggered the Action Level. All monitoring results were within the corresponding Limit Levels at all monitoring stations in the reporting period.

3.5 Conclusion

As the construction activities were far away from the monitoring stations, major sources of noise dominating the monitoring stations observed during the construction noise impact monitoring were traffic noise near NM1A, school activities near NM4 and aircraft noise near NM6 during this reporting period. It is considered that the monitoring work during the reporting period was effective and there was no adverse impact attributable to the Project activities.

4 Water Quality Monitoring

All water impact monitoring work has been completed, with results presented in the Annual EM&A Report for 2023 and to be included in the Final EM&A Report. Based on the analysis presented in Annual EM&A Report for 2023, the post-construction phase water quality monitoring did not reveal significant changes of the water quality when comparing with baseline water quality monitoring, and it can be concluded that the marine works of the Project during construction phase did not cause deterioration in or adverse impacts on the marine water quality surrounding the Project site.

5 Waste Management

In accordance with the Manual, the waste generated from construction activities was audited once per week to determine if wastes are being managed in accordance with the Waste Management Plan (WMP) prepared for the Project, contract-specific WMP, and any statutory and contractual requirements. All aspects of waste management including waste generation, storage, transportation and disposal were assessed during the audits.

5.1 Action and Limit Levels

The Action and Limit Levels of the construction waste are provided in Table 5.1.

Table 5.1: Action and Limit Levels for Construction Waste

Monitoring Stations

Action Level

Limit Level

Construction Area

When one valid documented complaint is received

Non-compliance of the WMP, contract-specific

WMPs, any statutory and contractual requirements

5.2 Waste Management Status

Weekly monitoring on all works contracts were carried out by the ET to check and monitor the implementation of proper waste management practices during the construction phase.

Recommendations made included provision and maintenance of proper chemical waste storage area, as well as handling, segregation, and regular disposal of general refuse. The contractors have taken actions to implement the recommended measures. Waste management audits were carried out by ET according to the requirement of the Waste Management Plan, Updated EM&A Manual and the implementation schedule of the waste management mitigation measures in Appendix A.

Based on updated contractors’ information, construction waste generated in the reporting period is summarised in Table 5.2. The ET and IEC have carried out site audits regularly and reviewed the trip ticket system. Dedicated areas for sorting of materials are established on site. Recyclable materials such as steel bar, metal strip, aluminium, paper and plastic are sorted on-site and transported off-site for recycling during this reporting period.

Table 5.2: Construction Waste Statistics

	C&D Material Stockpiled for Reuse or Recycle⁽¹⁾ (m³)	C&D Material Reused in the Project (m³)	C&D Material Reused in other Projects (m³)	C&D Material Transferred to Public Fill (m³)	Chemical Waste (kg)	Chemical Waste (l)	General Refuse (tonne)
Apr 2025⁽²⁾	760	1,885	0	4,680	0	0	4,336
May 2025⁽³⁾	692	841	34	3,676	0	600	3,295
Notes: (1) C&D refers to Construction and Demolition. (2) Updated figures were provided by contractors. (3) The data was based on the information provided by contractors up to the submission date of this Monthly EM&A Report and might be updated in the forthcoming Monthly EM&A Report.

There were no complaints, non-compliance of the WMP, contract-specific WMPs, statutory and contractual requirements that triggered Action and Limit Levels in the reporting period.

5.3 Marine Sediment Management

Marine sediment is managed according to the EIA Report, Updated EM&A Manual, Waste Management Plan and the proposal of Further Development on Treatment Level / Details and the Reuse Mode for Marine Sediment (hereinafter referred to as “Further Development Proposal”) of the Project. The storage conditions of the treated marine sediment, and final backfilling location records were inspected and checked by ET and verified by IEC to ensure they were in compliance with the requirements as stipulated in the Waste Management Plan and Further Development Proposal.

Backfilling works for treated marine sediment was conducted during the reporting period. The details of the marine sediment sampling, treatment and backfilling can be referred to Annual EM&A Report.

6 Chinese White Dolphin Monitoring

In accordance with Section 10.2.3.2 (4) of the Updated EM&A Manual, the operation phase CWD monitoring will be conducted for a period of at least 12 months after the full implementation of the North Lantau Marine Park (NLMP) at a frequency of two full surveys per month. Following the full implementation of the NLMP and the completion of post-construction phase CWD monitoring in December 2024, the operation phase CWD monitoring was commenced in January 2025.

6.1 CWD Monitoring Transects

Small vessel line-transect surveys were conducted along the transects covering Northeast Lantau (NEL), Northwest Lantau (NWL), Airport West (AW), West Lantau (WL) and Southwest Lantau (SWL) areas as proposed in the Manual, which are consistent with the Agriculture, Fisheries and Conservation Department (AFCD) long-term monitoring programme (except the addition of AW). The AW transect has not been previously surveyed in the AFCD programme due to the restrictions of HKIA Approach Area, nevertheless, this transect was established during the EIA of the 3RS Project and refined in the Manual with the aim to collect project specific baseline information within the HKIA Approach Area to fill the data gap that was not covered by the AFCD programme. This also provided a larger sample size for estimating the density, abundance and patterns of movements in the broader study area of the project.

The planned vessel survey transect lines for operation phase CWD monitoring following the waypoints set for construction phase monitoring as proposed in the Manual are depicted in Figure 6.1 with the waypoint coordinates of all transect lines given in Table 6.1, which are subject to on-site refinement based on the actual survey conditions and constraints.

Table 6.1: Coordinates of Transect Lines in NEL, NWL, AW, WL and SWL Survey Areas

Waypoint	Easting	Northing	Waypoint	Easting	Northing
NEL
1S	813525	820900	6N	818568	824433
1N	813525	824657	7S	819532	821420
2S	814556	818449	7N	819532	824209
2N	814559	824768	8S	820451	822125
3S	815542	818807	8N	820451	823671
3N	815542	824882	9S	821504	822371
4S	816506	819480	9N	821504	823761
4N	816506	824859	10S	822513	823268
5S	817537	820220	10N	822513	824321
5N	817537	824613	11S	823477	823402
6S	818568	820735	11N	823477	824613
NWL
1S	804671	814577	5S	808504	821735
1N	804671	831404	5N	808504	828602
2Sb	805475	815457	6S	809490	822075
2Nb	805476	818571	6N	809490	825352
2Sa	805476	820770	7S	810499	822323
2Na	805476	830562	7N	810499	824613
3S	806464	821033	8S	811508	821839
3N	806464	829598	8N	811508	824254
4S	807518	821395	9S	812516	821356
4N	807518	829230	9N	812516	824254
AW
1W	804733	818205	2W	805045	816912
1E	806708	818017	2E	805960	816633
WL
1W	800600	805450	7W	800400	811450
1E	801760	805450	7E	802400	811450
2W	800300	806450	8W	800800	812450
2E	801750	806450	8E	802900	812450
3W	799600	807450	9W	801500	813550
3E	801500	807450	9E	803120	813550
4W	799400	808450	10W	801880	814500
4E	801430	808450	10E	803700	814500
5W	799500	809450	11W	802860	815500
5E	801300	809450	12S/11E	803750	815500
6W	799800	810450	12N	803750	818500
6E	801400	810450
SWL
1S	802494	803961	6S	807467	801137
1N	802494	806174	6N	807467	808458
2S	803489	803280	7S	808553	800329
2N	803489	806720	7N	808553	807377
3S	804484	802509	8S	809547	800338
3N	804484	807048	8N	809547	807396
4S	805478	802105	9S	810542	800423
4N	805478	807556	9N	810542	807462
5S	806473	801250	10S	811446	801335
5N	806473	808458	10N	811446	809436

6.2 CWD Monitoring Methodology

6.2.1 Small Vessel Line-transect Survey

Small vessel line-transect surveys provided data for density and abundance estimation and other assessments using distance-sampling methodologies, specifically, line-transect methods.

The surveys involved small vessel line-transect data collection and have been designed to be similar to, and consistent with, previous surveys for the AFCD for their long-term monitoring of small cetaceans in Hong Kong. The survey was designed to provide systematic, quantitative measurements of density, abundance and habitat use.

As mentioned in Section 6.1, the transects covered NEL, NWL, AW, WL and SWL areas as proposed in the Manual, which are consistent with the AFCD long-term monitoring programme (except AW). There are two types of transect lines:

● Primary transect lines: the parallel and zigzag transect lines as shown in Figure 6.1; and

● Secondary transect lines: transect lines connecting between the primary transect lines and going around islands.

All data collected on both primary and secondary transect lines were used for analysis of sighting distribution, group size, activities including association with fishing boat, and mother-calf pairs. Only on-effort data collected under favourable conditions of Beaufort 0-3 and visibility of approximately 1200 m or beyond were used for analysis of the CWD encounter rates.

A 15-20m vessel with a flying bridge observation platform about 4 to 5m above water level and unobstructed forward view, and a team of three to four observers were deployed to undertake the surveys. Two observers were on search effort at all times when following the transect lines with a constant speed of 7 to 8 knots (i.e. 13 to 15 km per hour), one using 7X handheld binoculars and the other using unaided eyes and recording data.

During on-effort survey periods, the survey team recorded effort data including time, position (waypoints), weather conditions (Beaufort sea state and visibility) and distance travelled in each series with assistance of a handheld GPS device. The GPS device also continuously and automatically logged data including time, position (latitude and longitude) and vessel speed throughout the entire survey.

When CWDs were seen, the survey team was taken off-effort, the dolphins were approached and photographed for photo-ID information (using a Canon 7D [or similar] camera and long 300 mm+ telephoto lens), then followed until they were lost from view. At that point, the boat returned (off effort) to the survey line at the closest point after obtaining photo records of the dolphin group and began to survey on effort again.

Focal follows of dolphins would be used for providing supplementary information only where practicable (i.e. when individual dolphins or small stable groups of dolphins with at least one member that could be readily identifiable with unaided eyes during observations and weather conditions are favourable). These would involve the boat following (at an appropriate distance to minimise disturbance) an identifiable individual dolphin for an extended period of time, and collecting detailed data on its location, behaviour, response to vessels, and associates.

6.2.2 Photo Identification

CWDs can be identified by their unique features like presence of scratches, nick marks, cuts, wounds, deformities of their dorsal fin and distinguished colouration and spotting patterns.

When CWDs were observed, the survey team was taken off-effort, the dolphins were approached and photographed for photo-ID information (using a Canon 7D [or similar] camera and long 300 mm+ telephoto lens). The survey team attempted to photograph both sides of every single dolphin in the group as the colouration and spotting pattern on both sides may not be identical. The photos were taken at the highest available resolution and stored on Compact Flash memory cards for transferring into a computer.

All photos taken were initially examined to sort out those containing potentially identifiable individuals. These sorted-out images would then be examined in detail and compared to the CWD photo-identification catalogue established for 3RS Project since the baseline monitoring stage.

6.3 Monitoring Results and Observations

6.3.1 Small Vessel Line-transect Survey

Survey Effort

Within this reporting period, two complete sets of small vessel line-transect surveys were conducted on the 6, 9, 15, 16, 19, 20, 21 and 23 May 2025 covering all transects in NEL, NWL, AW, WL and SWL survey areas for twice.

A total of around 450.5 km of survey effort was collected from these surveys and around 438.6 km of survey effort was being conducted under favourable weather condition (i.e. Beaufort Sea State 3 or below with favourable visibility). Details of the survey effort are given in Appendix C.

Sighting Distribution

In the current reporting period, nine sightings with 19 dolphins were sighted. All these sightings were on-effort records under favourable weather condition (i.e. Beaufort Sea State 3 or below with favourable visibility). Details of dolphin sightings are presented in Appendix C.

Distribution of all CWD sightings recorded in the current reporting period is illustrated in Figure 6.2. In WL, the majority of CWD sightings were scattered between Yi O and Fan Lau. In NWL, a CWD sighting was recorded at the waters near Castle Peak Power Station. It’s been a while since last sighting in this part of the NWL survey area dated back to 2022. There was no CWD sighting recorded in SWL and NEL during the reporting period.

Figure 6.2: Sightings Distribution of Chinese White Dolphins

Picture 1, Picture

Remarks: (1) Please note that there are nine pink circles on the map indicating the sighting locations of CWDs. (2) Marine park excludes land area and the landward boundary generally follows the high water mark along the coastline.

Group Size

In the current reporting period, nine groups with 19 dolphins in total were sighted, and the average group size of CWDs was 2.1 dolphins per group. Most of the CWD sightings were having small group size (i.e. 1-2 dolphins) and no CWD sighting with large group size (i.e. 10 or more dolphins) was recorded during the current reporting period.

Activities and Association with Fishing Boats

There were two CWD sightings recorded engaging in foraging activities in WL during the current reporting period. Both sightings were observed in association with operating purse seiner in WL.

Mother-calf Pair

In this reporting period, there was a CWD sighting recorded with the presence of mother-and-unspotted juvenile pair(s) in WL.

6.3.2 Photo Identification

In the current reporting period, a total number of nine different CWD individuals were identified for a total of nine times. A summary of photo identification works is presented in Table 6.2. Representative photos of these individuals are given in Appendix C.

Table 6.2: Summary of Photo Identification

Individual ID	Date of Sighting (dd-mmm-yy)	Sighting Group No.	Area	Individual ID	Date of Sighting (dd-mmm-yy)	Sighting Group No.	Area
NLMM013	9-May-25	1	NWL	WLMM067	16-May-25	4	WL
NLMM095	9-May-25	1	NWL	WLMM068	16-May-25	4	WL
SLMM034	16-May-25	3	WL	WLMM111	16-May-25	4	WL
SLMM050	16-May-25	4	WL	WLMM162	16-May-25	4	WL
WLMM043	16-May-25	3	WL

6.4 Site Audit for CWD-related Mitigation Measures

During the reporting period, one dolphin observation station and team of at least two dolphin observers was deployed by the contractor for continuous monitoring of the DEZ for rock armour laying works in accordance with the DEZ Plan. During this reporting period, no training session were provided by the ET for the proposed dolphin observers. From the contractor’s records, no dolphin or other marine mammals were observed this reporting month. The contractor’s records were also audited by ET during site inspection.

The construction vessel management are presented in Section 7.5 below.

According to Section 10.6.2.2 of the Updated EM&A Manual, audits of HSF implementation measures and Spill Responses Plan implementation measures will be conducted once every three months and every six months respectively for one year upon operation of 3RS. The second audit of HSF implementation measures was conducted in May 2025. During the audit period from 1 March 2025 to 31 May 2025, no SkyPier HSFs were recorded travelling between HKIA SkyPier and Zhuhai/Macau. The first audit of the Spill Responses Plan measures was conducted in May 2025.

6.5 Timing of reporting CWD Monitoring Results

Detailed analysis of CWD monitoring results collected by small vessel line-transect survey will be provided in upcoming quarterly reports and annual report.

6.6 Summary of CWD Monitoring

Following the full implementation of the NLMP and the completion of post-construction phase CWD monitoring in December 2024, the operation phase CWD monitoring was commenced in January 2025.

7 Environmental Site Inspection and Audit

7.1 Environmental Site Inspection

Site inspections of the construction works to audit the implementation of proper environmental pollution control and mitigation measures for the Project were conducted by ET and IEC on a weekly and bi-weekly basis, respectively. The weekly site inspection schedule of the construction works is provided in Appendix B. Besides, ad-hoc site inspections were also conducted by ET and IEC if environmental problems were identified, or subsequent to receipt of an environmental complaint, or as part of the investigation work. These site inspections provided a direct means to reinforce the specified environmental protection requirements and pollution control measures in construction sites.

During site inspections, environmental situation, status of implementation of pollution control and mitigation measures were observed. Environmental documents and site records, including waste disposal record, maintenance record of environmental equipment, and relevant environmental permit and licences, were also checked on site. Observations were recorded in the site inspection checklist and passed to the contractor together with the recommended mitigation measures where necessary in order to advise contractors on environmental improvement, awareness and on-site enhancement measures. The observations were made with reference to the following information during the site inspections:

· The EIA and EM&A requirements;

· Relevant environmental protection laws, guidelines, and practice notes;

· The EP conditions and other submissions under the EP;

· Monitoring results of EM&A programme;

· Works progress and programme;

· Proposal of individual works;

· Contract specifications on environmental protection; and

· Previous site inspection results.

Good site practices were observed in site inspections during the reporting period. Advice was given when necessary to ensure the construction workforce were familiar with relevant procedures, and to maintain good environmental performance on site. Regular toolbox talks on environmental issues were organised for the construction workforce by the contractors to ensure understanding and proper implementation of environmental protection and pollution control mitigation measures.

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 A.

7.2 Landscape and Visual Mitigation Measures

Implementation of applicable landscape and visual mitigation measures (reference to the environmental protection measures CM1 – CM10 and OM7 in Appendix A) was monitored in accordance with the Manual. All measures undertaken by both the contractor and the landscape contractor during the construction phase and first year of the operation phase shall be audited by a landscape architect, as a member of the ET, on a regular basis to ensure compliance with the intended aims of the measures. Site inspections shall be undertaken at least once every two months during the first year of the operation phase.

The implementation status of the environmental protection measures is summarized below in Table 7.1. Examples of landscape and visual mitigation measures are shown in Table 7.2. The monitoring programme for detailed design, construction, establishment works and long term management (10 years) stages is presented in Table 7.3. Event and Action Plan for Landscape and Visual impacts is stated in Table 7.4.

Table 7.1: Landscape and Visual – Construction Phase Audit Summary

Landscape and Visual Mitigation Measures during Construction	Implementation Status	Relevant Contract(s) in the Reporting Period
CM1 – The construction area and contractor’s temporary works areas shall be minimised to avoid impacts on adjacent landscape.	The implementation of mitigation measures was checked by ET during weekly site inspection and reported by the Contractors during the monthly Environmental Management Meetings. Implementation of the measures CM5, CM6 and CM7 by Contractors was observed.	All works contracts
CM2 – Reduction of construction period to practical minimum
CM3 – Phasing of the construction stage to reduce visual impacts during the construction phase.
CM4 – Construction traffic (land and sea) including construction plants, construction vessels and barges shall be kept to a practical minimum.
CM5 – Erection of decorative mesh screens or construction hoardings around works areas in visually unobtrusive colours.
CM6 – Avoidance of excessive height and bulk of site buildings and structures
CM7 – Control of night-time lighting by hooding all lights and through minimisation of night working periods
CM8 – All existing trees shall be carefully protected during construction. Detailed Tree Protection Specification shall be provided in the Contract Specification. Under this specification, the Contractor shall be required to submit, for approval, a detailed working method statement for the protection of trees prior to undertaking any works adjacent to all retained trees, including trees in contractor’s works areas	Tree Protection Specifications were provided in the relevant Contract Specifications respectively for implementation by the Contractors under the Project. The Contractors’ performance on the implementation of the tree maintenance and protection measures were observed and checked by the ET weekly during construction period.	3508, 132kV Cable
CM9 – Trees unavoidably affected by the works shall be transplanted where practical. A detailed Tree Transplanting Specification shall be provided in the Contract Specification, if applicable. Sufficient time for necessary tree root and crown preparation periods shall be allowed in the project programme	Tree Transplanting Specifications were provided in the relevant Contract Specifications respectively for implementation by the Contractors under the Project where trees would unavoidably be affected by the construction works. The Contractors were required to submit Method Statements for tree transplanting prior to the transplanting works. Tree inspections were conducted by ET to check the tree transplanting works implemented by the Contractors on site. The Contractors’ performance on the implementation of trees maintenance and protection measures on transplanted trees were observed and checked by the ET bi-monthly during the 12-month establishment period after the completion of each batch of transplanting works. Long term management of the transplanted trees was currently monitored by ET annually.	3508
CM10 – Land formation works shall be followed with advanced hydroseeding around taxiways and runways as soon as practical	The implementation of advanced hydroseeding works by the Contractors were completed.	-
OM7 – Compensatory tree planting for all felled trees shall be provided to the satisfaction of relevant Government departments. Required numbers and locations of compensatory trees shall be determined and agreed separately with Government during the Tree Felling Application process under the relevant technical circulars.(1)	Compensatory trees have been planted in batches at different time periods. The compensatory trees were checked by ET bi-monthly during the 12-month establishment period after the completion of each batch of compensatory tree planting works. Subsequently, the trees were monitored annually throughout the 10-year long-term management period, succeeding the establishment period for each batch of compensatory planting.	AAHK

Note:

(1) AAHK is the management and maintenance agency of the compensatory trees. Tree Felling Application is not required for 3RS project.

Table 7.2: Examples of Landscape and Visual Mitigation Measures in the Reporting Period


Erection of site hoardings around works area in unobtrusive colours (CM5)	Avoidance of excessive height and bulk of site buildings (CM6)	Control of night-time lighting using light hooding and minimisation of night working period (CM7)

General view of retained tree (CM8)	General view of transplanted trees (CM9)	General view of compensatory tree planting (OM7)

In accordance with the Updated EM&A Manual, all existing trees shall be protected carefully during construction. Trees unavoidably affected by the works shall be transplanted where practical. In this reporting period, the cumulative total number of retained trees and transplanted trees under the Project remained unchanged (i.e. 76 and 26 respectively) comparing to the previous reporting period. No non-conformity was recorded in the reporting period.

Details of the retained trees, transplanted trees and to-be-transplanted trees under the Project are summarized in Table 7.5. Details of the retained trees are to be discussed in the Quarterly EM&A reports.

For the compensatory tree monitoring, a bi-monthly site inspection for the 12-month establishment period and an annual site inspection for the long-term management period were conducted in May 2025.

Table 7.3: Monitoring Programme for Landscape and Visual

Stage	Monitoring Task	Monitoring Report	Form of Approval	Frequency
Detailed Design	Checking of design works against the recommendations of the landscape and visual impact assessments within the EIA shall be undertaken during detailed design and tender stage, to ensure that they fulfil the intention of the mitigation measures. Any changes to the design, including design changes on site shall also be checked.	Report by AAHK / PM confirming that the design conforms to requirements of EP.	Approved by Client	At the end of the Detailed Design Phase
Construction	Checking of the contractor’s operations during the construction period.	Report on Contractor's compliance, by ET	Counter signature of report by IEC	Weekly
Establishment Works	Checking of the planting works during the twelve-month Establishment Period after completion of each batch of transplanting works or compensatory tree planting works.	Report on Contractor's compliance, by ET	Counter signature of report by IEC	Every two months
Long Term Management (10 year)	Monitoring of the long-term management of the planting works in the period up to 10 years after completion of each batch of transplanting works or compensatory tree planting works.	Report on compliance by ET or maintenance Agency as appropriate	Counter signature of report by Management Agency	Annually

Table 7.4: Event and Action Plan for Landscape and Visual

Event Action Level	Action
Event Action Level	ET	IEC	AAHK / PM	Contractor
Design Check	Check final design conforms to the requirements of EP and prepare report.	Check report. Recommend remedial design if necessary.	Undertake remedial design if necessary.
Non-conformity on one occasion	Identify source. Inform IEC and AAHK / PM. Discuss remedial actions with IEC, AAHK / PM and Contractor. Monitor remedial actions until rectification has been completed.	Check report. Check Contractor’s working method. Discuss with ET and Contractor on possible remedial measures. Advise AAHK / PM on effectiveness of proposed remedial measures. Check implementation of remedial measures.	Notify Contractor. Ensure remedial measures are properly implemented.	Amend working methods to prevent recurrence of non-conformity. Rectify damage and undertake additional action necessary.
Repeated Non-conformity	Identify source. Inform IEC and AAHK / PM. Increase monitoring frequency. Discuss remedial actions with IEC, AAHK / PM and Contractor. Monitor remedial actions until rectification has been completed. If non-conformity stops, cease additional monitoring.	Check monitoring report. Check Contractor’s working method. Discuss with ET and Contractor on possible remedial measures. Advise AAHK / PM on effectiveness of proposed remedial measures. Supervise implementation of remedial measures.	Notify Contractor. Ensure remedial measures area properly implemented.	Amend working methods to prevent recurrence of non-conformity. Rectify damage and undertake additional action necessary.

Table 7.5: Summary of the Number of Retained, Transplanted and To-be-transplanted Trees in the Reporting Period

Contract No. / Works	Retain (nos.)	Transplanted (nos.)		To-be-transplanted (nos.)
Contract No. / Works	Retain (nos.)	Establishment Period	Maintenance Period	To-be-transplanted (nos.)
3503	0	0	9⁽¹⁾	0
3508	24	0	12	0
3801	0	0	5⁽²⁾	0
132kV Cable	52	0	0	0
Grand Total	76	0	26	0

Note:

(1) Contract 3503 was completed. The 9 transplanted trees, including T835, T836, T838, T812, T814, T815, T829, T830 and T831 were handed over to AAHK in February 2022.

(2) The 5 transplanted trees including CT276, CT1253, CT1194, CT1794 and CT1795 have been handed over to other management agencies. Details of the management agency are presented in Table 7.6.

Summary of the updated transplanted trees are presented in Table 7.6.

Table 7.6: Summary of the Transplanted Trees Updated in the Reporting Period

Tree ID	Transplant Date	Management Stage	Management Agency	Remarks
CT276	3 May 2018	Long Term Management period Jun 2019 – May 2028	Southern Landside Petrol Filling Station	Establishment Period was completed. Next inspection will be conducted in February 2026. Photos of the last inspection in February 2025 can be referred to Table 7.7 of the Construction Phase Monthly EM&A Report No.110.
CT1253	4 May 2018	Long Term Management period Jun 2019 – May 2028	Southern Landside Petrol Filling Station
T835	22 Jan 2020	Long Term Management period Feb 2021 – Jan 2030	AAHK	Establishment Period was completed. The tree within the land parcel was acquired for construction of infrastructure. The tree was felled in 2023.
T836	13 Dec 2019	Long Term Management period Feb 2021 – Jan 2030	AAHK
T838	22 Jan 2020	Long Term Management period Feb 2021 – Jan 2030	AAHK
T812	21 Dec 2020	Long Term Management period Jan 2022 – Dec 2031	AAHK	Establishment Period was completed. Next inspection will be conducted in December 2025. Photos of the last inspection in December 2024 can be referred to Table 7.7 of the Construction Phase Monthly EM&A Report No.108.
T814	20 Dec 2020	Long Term Management period Jan 2022 – Dec 2031	AAHK
T815	15 Dec 2020	Long Term Management period Jan 2022 – Dec 2031	AAHK
T829	18 Dec 2020	Long Term Management period Jan 2022 – Dec 2031	AAHK
T830	14 Dec 2020	Long Term Management period Jan 2022 – Dec 2031	AAHK
T831	19 Dec 2020	Long Term Management period Jan 2022 – Dec 2031	AAHK
T1493	6 Jul 2021	Long Term Management period Aug 2022 – Jul 2031	Contract 3508	Establishment Period was completed. Next inspection will be conducted in July 2025. Photos of the last inspection in July 2024 can be referred to Table 7.7 of the Construction Phase Monthly EM&A Report No.103.
T1494	6 Jul 2021	Long Term Management period Aug 2022 – Jul 2031	Contract 3508
T1495	10 Jul 2021	Long Term Management period Aug 2022 – Jul 2031	Contract 3508
T1496	5 Jul 2021	Long Term Management period Aug 2022 – Jul 2031	Contract 3508
T1497	5 Jul 2021	Long Term Management period Aug 2022 – Jul 2031	Contract 3508
T1498	29 Jun 2021	Long Term Management period Aug 2022 – Jul 2031	Contract 3508
T1499	29 Jun 2021	Long Term Management period Aug 2022 – Jul 2031	Contract 3508
T1500	30 Jun 2021	Long Term Management period Aug 2022 – Jul 2031	Contract 3508
T1501	30 Jun 2021	Long Term Management period Aug 2022 – Jul 2031	Contract 3508
T1502	5 Jul 2021	Long Term Management period Aug 2022 – Jul 2031	Contract 3508
T1503	6 Jul 2021	Long Term Management period Aug 2022 – Jul 2031	Contract 3508
T1504	24 Jun 2021	Long Term Management period Aug 2022 – Jul 2031	Contract 3508
CT1194	4 May 2018	Long Term Management period Jun 2019 – May 2028	Southern Landside Petrol Filling Station	Establishment Period was completed. Uprooted and collapsed due to Typhoon Higos on 18 August 2020. Tree removal was conducted as recommended by tree specialist of the contractor of Southern Landside Petrol Filing Station.
CT1794	3 May 2018	Long Term Management period Jun 2019 – May 2028	AsiaWorld-Expo	Establishment Period was completed. The tree within the land parcel was acquired by the government for construction of emergency hospital to handle COVID19 pandemic at AsiaWorld-Expo. The tree was felled in late 2020.
CT1795	3 May 2018	Long Term Management period Jun 2019 – May 2028	AsiaWorld-Expo	Establishment Period was completed. The tree within the land parcel was acquired by the government for construction of emergency hospital to handle COVID19 pandemic at AsiaWorld-Expo. The tree was felled in late 2020.

7.3 Land Contamination Assessment

The Supplementary CAP was submitted to EPD pursuant to EP Condition 2.20. The CARs for Golf Course and T2 Emergency Power Supply Systems (EPSS) were submitted to EPD in accordance with EP Condition 1.9 and the Supplementary CAP in which no land contamination issues were identified. EPD issued no further comment for aforesaid CARs. No leakage was found after the removal of underground fuel pipelines of T2 EPSS and all required additional photos have been submitted to EPD.

According to the approved supplementary CAP, there are 3 remaining locations where site re-appraisal / additional site investigation are proposed. The site re-appraisal summary report for Fire Training Facility was submitted and accepted by EPD on 20 December 2023. The status of site re-appraisal/ additional site investigation of the 2 remaining locations (Fuel Tank Room to the west of CAD Antenna Farm and Airside Petrol Filling Station) shall be further updated upon latest development programme is available.

7.4 Audit of SkyPier High Speed Ferries

The Marine Travel Routes and Management Plan for High Speed Ferries of SkyPier (the SkyPier Plan) was submitted to the Advisory Council on the Environment for comment and subsequently submitted to and approved by EPD in November 2015 under EP Condition 2.10. The approved SkyPier Plan is available on the dedicated website of the Project. In the SkyPier Plan, AAHK has committed to implement the mitigation measure of requiring HSFs of SkyPier travelling between HKIA and Zhuhai/Macau to start diverting the route with associated speed control across the area, i.e. Speed Control Zone (SCZ), with high CWD abundance. The route diversion and speed restriction at the SCZ have been implemented since 28 December 2015.

During the reporting period, the SkyPier HSF travelling to and from Zhuhai and Macau has been suspended until further notice. No SkyPier HSFs were recorded travelling between HKIA SkyPier and Zhuhai/Macau in May 2025.

7.5 Audit of Construction and Associated Vessels

The updated MTRMP-CAV was approved by EPD on 16 May 2025 under EP Condition 2.9. The approved Plan is available on the dedicated website of the Project.

ET carried out the following actions during the reporting period:

· One skipper training session was held by contractor’s Environmental Officer. Competency test was subsequently conducted with trained skipper by ET. The list of all trained skippers was properly recorded and maintained by ET.

· During this reporting period, one skipper was trained by contractor’s Environmental Officer. In total, 1941 skippers were trained from August 2016 to May 2025.

· Deviations recorded in MSS such as speeding and entering no-entry zone were identified. All the concerned contractors were reminded to comply with the requirements of the MTRMP-CAV during the bi-weekly Construction Traffic Control Centre (CTCC) audit.

· Three-month rolling programmes (one month record and three months forecast) for construction vessel activities were received from the contractors in order to help maintain the number of construction and associated vessels on site to a practicable minimal level.

· Conducted a trial for auditing construction and associated vessels according to the updated MTRMP-CAV.

7.6 Implementation of Dolphin Exclusion Zone

The DEZ Plan was submitted in accordance with EP Condition 3.1 (v) requirement and Section 10.3 of the Manual and approved in April 2016 by EPD. The ET checked the contractor’s dolphin sighting record and relevant records to audit the implementation of DEZ and there was no finding. During the reporting period, there was no dolphin sightings within the DEZ.

7.7 Status of Submissions under Environmental Permits

The current status of submissions under the EP up to the reporting period is presented in Table 7.7.

Table 7.7: Status of Submissions under Environmental Permit

EP Condition	Submission	Status
2.1	Complaint Management Plan	Accepted / approved by EPD
2.4	Management Organizations
2.5	Construction Works Schedule and Location Plans
2.7	Marine Park Proposal
2.8	Marine Ecology Conservation Plan
2.9	Marine Travel Routes and Management Plan for Construction and Associated Vessels
2.10	Marine Travel Routes and Management Plan for High Speed Ferries of SkyPier
2.11	Marine Mammal Watching Plan
2.12	Coral Translocation Plan
2.13	Fisheries Management Plan
2.14	Egretry Survey Plan
2.15	Silt Curtain Deployment Plan
2.16	Spill Response Plan
2.17	Detailed Plan on Deep Cement Mixing
2.18	Landscape & Visual Plan
2.19	Waste Management Plan
2.20	Supplementary Contamination Assessment Plan
2.21	Procedures for Mitigation of Aircraft Noise
2.23	Aircraft Noise Monitoring Plan
2.24	Airport Operation related Emissions Control Plan
2.25	Operational Phase Waste Management Plan
3.1	Updated EM&A Manual
3.4	Baseline Monitoring Reports

7.8 Compliance with Other Statutory Environmental Requirements

During the reporting period, environmental related licenses and permits required for the construction activities were checked. No non-compliance with environmental statutory requirements was recorded. The latest statuses of the environmental licenses and permits in the reporting period are presented in Appendix E.

7.9 Analysis and Interpretation of Complaints, Notification of Summons and Status of Prosecutions

7.9.1 Complaints

A complaint was received on 25 April 2025 concerning dust nuisance at South Wing Level 6 of Terminal 2 Concourse. In accordance with the Project’s Manual and Complaint Management Plan, the ET initiated an investigation. The relevant contractor confirmed that mixing works had been conducted in the area. Prior to resuming such activities, dust mitigation measures were enhanced and training was provided to workers. ET conducted site inspections and did not observe any dust-related items. The contractor was reminded to continue reviewing dust control measures and ensure proper training is provided before future mixing works. Based on the findings, the complaint case is considered resolved and closed.

7.9.2 Notifications of Summons or Status of Prosecution

Neither notification of summons nor prosecution was received during the reporting period.

7.9.3 Cumulative Statistics

Cumulative statistics on complaints, notifications of summons and status of prosecutions are summarised in Appendix F.

8 Future Key Issues and Other EIA & EM&A Issues

8.1 Construction Programme for the Coming Reporting Period

Key activities anticipated in the next reporting period for the Project will include the following:

Reclamation Works:

Contract 3206 Main Reclamation Works

· Installation of precast units, scour apron, armour rocks and miscellaneous works at eastern seawall.

Airfield Works:

Contract 3305 Airfield Ground Lighting System

· Cable laying works; and

· Hardware installation works.

Contract 3310 North Runway Modification Works

· Demolition of bulkhead wall, pavement, drainage works, profile barrier, mechanical, electrical and plumbing works, and architectural, builder's work and finishing works at vehicular tunnels;

· Falsework and formwork;

· Reinforced concrete works;

· Drainage and watermain works; and

· Architectural, builder's work and finishing works at ancillary buildings.

Terminal 2 Concourse and Apron Works:

Contract 3404 Integrated Airport Control System

· System testing works.

Contract 3408 Third Runway Concourse and Apron Works

· Building services and architectural, builder's work and finishing works;

· Cable laying and utilities works;

· Pavement works;

· Operation of concrete batching plant; and

· Reinforced concrete works.

Terminal 2 Expansion:

Contract 3508 Terminal 2 Expansion Works

· Architectural, builder's work and finishing works;

· Electrical and mechanical works;

· Roof works;

· Hard landscape works;

· Link bridge works;

· Emergency vehicular access construction;

· Pier, deck, parapet and abutment construction;

· Road works, drainage and utilities works; and

· Crossroad duct laying works.

Automated People Mover and Baggage Handling System:

Contract 3601 New Automated People Mover System (TRC Line)

· Guide beam installation; and

· Cable containment and cable laying works.

Contract 3602 Existing APM System Modification Works

· Restoration of buffer stop;

· Platform screen door installation works; and

· Steel fixing and formwork to track plinth.

Contract 3603 Baggage Handling System (BHS)

· IT cabling and commissioning;

· Steel work, mechanical, electrical, CCTV and IT installation; and

· Conveyor, electrical and fire service installation .

Airport Support Infrastructure:

Contract 3801 APM and BHS Tunnels on Existing Airport Island

· Slope levelling works; and

· Construction of U-channel

Contract 3802 APM and BHS Tunnels and Related Works

· Lateral supports and backfilling works;

· Box culvert construction and superstructure works;

· APM and BHS Tunnel construction;

· Reinforced concrete works; and

· Architectural, builder's work and finishing works.

Contract 3804 East and Landside Fire Stations

· Superstructure works;

· Electrical and mechanical works;

· Utilities works; and

· Architectural, builder's work and finishing works.

Contract 3805 New Airport District Police Operational Base

· Construction of superstructures and drainage system;

· Installation of fuel tank; and

· Site formation works.

Construction Support:

Contract 3901A Concrete Batching Facility

· Operation of concrete batching plant and material conveyor belt.

Contract 3901B Concrete Batching Facility

· Decommissioning of concrete batching plant.

Contract 3908 Quay Management Services

· Provision of services of site management and logistic control of 3RS quays; and

· Provision of flat top barge and vehicle delivery services between the launching point in Hong Kong and 3RS quays.

Contract 3913 Asphalt Batching Plant

· Operation of asphalt batching plant.

8.2 Key Environmental Issues for the Coming Reporting Period

8.2.1 Construction Activities in the Coming Reporting Period

The key environmental issues for the Project in the coming reporting period are expected to be associated with the construction activities include:

· Generation of dust from construction works and stockpiles;

· Noise from operating equipment and machinery on-site;

· Generation of site surface runoffs and wastewater from activities on-site;

· Sorting, recycling, storage and disposal of general refuse and construction waste;

· Reuse of treated marine sediments from excavation works; and

· Management of chemicals and avoidance of oil spillage on-site.

The implementation of required mitigation measures by the contractors will be monitored by the ET.

8.3 Monitoring Schedule for the Coming Reporting Period

A tentative schedule of the planned environmental monitoring work and the operation phase CWD monitoring in the next reporting period is provided in Appendix B.

8.4 Review of the Key Assumptions Adopted in the EIA Report

With reference to Appendix E of the Manual, it is noted that the key assumptions adopted in approved EIA report for the construction phase are still valid and no major changes are involved. The environmental mitigation measures recommended in the approved EIA Report remain applicable and shall be implemented in undertaking construction works for the Project.

9 Conclusion and Recommendation

The new North Runway was commissioned in November 2022. Following the completion of reconfiguration works on the Centre Runway, the 3RS was commissioned on 28 November 2024.

All the monitoring works for construction dust, construction noise, construction waste and landscape & visual were conducted during the reporting period in accordance with the Manual.

Monitoring results of construction dust, construction noise and construction waste did not trigger the corresponding Action and Limit Levels during the reporting period. No non-conformity was recorded for landscape & visual monitoring in the reporting period.

The operation phase CWD monitoring was conducted in May 2025.

Weekly site inspections of the construction works were carried out by the ET to audit the implementation of proper environmental pollution control and mitigation measures for the Project. Bi-weekly site inspections were also conducted by the IEC. Site inspection findings were recorded in the site inspection checklists and provided to the contractors to follow up.

On the implementation of the SkyPier Plan, SkyPier HSF services to and from Zhuhai and Macau has been suspended until further notice. No SkyPier HSFs were recorded travelling between HKIA SkyPier and Zhuhai/Macau during the reporting period.

For the implementation of MTRMP-CAV, the MSS automatically recorded the deviation cases such as speeding and entering no-entry zone. The ET checked the MSS records to ensure all deviation cases were followed up. All the concerned captains were reminded by the contractor’s CTCC representative to comply with the requirements of the MTRMP-CAV. Three-month rolling programmes for construction vessel activities, which ensures the proposed vessels are necessary and minimal through good planning, were also received from contractors.

[1] The Manual is available on the Project’s dedicated website (accessible at: http://env.threerunwaysystem.com/en/index.html).