Expansion of Hong Kong
International Airport into a
Three-Runway System
Construction Phase Quarterly EM&A Report
No.27 (1 July to 30 September 2022)
November 2022

Text, letter

Description automatically generated

Contents

Executive summary 3

1 Introduction 6

1.1 Background 6

1.2 Scope of this Report 6

1.3 Project Organisation 6

1.4 Contact information for the Project 10

1.5 Summary of Construction Works 10

1.6 Summary of EM&A Programme Requirements 11

2 Environmental Monitoring and Auditing 14

2.1 Air Quality Monitoring 14

2.1.1 Action and Limit Levels 14

2.1.2 Summary of Monitoring Results 14

2.1.3 Conclusion 15

2.2 Noise Monitoring 15

2.2.1 Action and Limit Levels 15

2.2.2 Summary of Monitoring Results 15

2.2.3 Conclusion 16

2.3 Water Quality Monitoring 16

2.3.1 Action and Limit Levels 17

2.3.2 Summary of Monitoring Results 18

2.3.3 Conclusion 19

2.4 Waste Monitoring 20

2.4.1 Action and Limit Levels 20

2.4.2 Summary of Monitoring Results 20

2.4.3 Marine Sediment Management 21

2.5 Chinese White Dolphin Monitoring 21

2.5.1 Action and Limit Levels 21

2.5.2 Summary of Monitoring Results 22

2.6 Sewage Flow Monitoring 30

2.6.1 Brief Summary of the Agreed Method 30

2.6.2 Desk-Based Monitoring Result 31

2.7 Environmental Site Inspection 31

2.7.1 Landscape and Visual Mitigation Measures 32

2.7.2 Land Contamination Assessment 37

2.8 Audit of SkyPier High Speed Ferries 37

2.9 Audit of Construction and Associated Vessels 38

2.10 Review of the Key Assumptions Adopted in the EIA Report 38

3 Report on Non-compliance, Complaints, Notifications of Summons and Prosecutions 39

3.1 Compliance with Other Statutory Environmental Requirements 39

3.2 Analysis and Interpretation of Complaints, Notification of Summons and Status of Prosecutions 39

3.2.1 Complaints 39

3.2.2 Notifications of Summons or Status of Prosecution 40

3.3 Cumulative Statistics 40

4 Conclusion and Recommendation 42

Tables

Table 1.1: Contact Information of Key Personnel 7

Table 1.2: Contact Information of the Project 10

Table 1.3: Summary of Status for All Environmental Aspects under the Updated EM&A Manual 11

Table 2.1: Impact Air Quality Monitoring Stations 14

Table 2.2: Percentage of Air Quality Monitoring Results within Action and Limit Levels 14

Table 2.3: General Meteorological Condition during Impact Air Quality Monitoring 14

Table 2.4: Impact Noise Monitoring Stations 15

Table 2.5: Percentage of Noise Monitoring Results within Action and Limit Levels 15

Table 2.6: General Meteorological Condition during Impact Noise Monitoring 16

Table 2.7: Monitoring Locations and Parameters for Impact Water Quality Monitoring 16

Table 2.8: Action and Limit Levels for General Water Quality Monitoring 17

Table 2.9: The Control and Impact Stations during Flood Tide and Ebb Tide for General Water Quality Monitoring 17

Table 2.10: Percentage of Water Quality Monitoring Results within Action and Limit Levels 18

Table 2.11: General Weather Condition and Sea Condition during Impact Water Quality Monitoring 18

Table 2.12: Summary of DO (Surface and Middle) Compliance Status (Mid-Ebb Tide) 19

Table 2.13: Summary of DO (Bottom) Compliance Status (Mid-Ebb Tide) 19

Table 2.14: Summary of DO (Surface + Middle) Compliance Status (Mid-Flood Tide) 19

Table 2.15: Summary of DO (Bottom) Compliance Status (Mid-Flood Tide) 19

Table 2.16: Action and Limit Levels for Construction Waste 20

Table 2.17: Construction Waste Statistics 20

Table 2.18: Land-based Theodolite Tracking Survey Station Details 21

Table 2.19: Derived Values of Action Level and Limit Level for Chinese White Dolphin Monitoring 22

Table 2.20: Summary of Number of CWD Sightings and Number of Dolphins for the Same Quarter Last Year, Previous Quarter, and Current Reporting Period 22

Table 2.21: Summary of Monthly and Running Quarterly STG and ANI of Chinese White Dolphin for the Same Quarter Last Year, Previous Quarter, and Current Reporting Period 24

Table 2.22: Summary of Photo Identification 28

Table 2.23: Summary of Survey Effort and CWD Group of Land-based Theodolite Tracking Survey 29

Table 2.24: Landscape and Visual – Construction Phase Audit Summary 32

Table 2.25: Summary of the Number of Retained, Transplanted and To-be-transplanted Trees in the Reporting Period 34

Table 2.26: Summary of the Tree Status Updated in the Reporting Period 34

Table 2.27: Summary of the Transplanted Trees Updated in the Reporting Period 34

Table 2.28: Photos of the Existing Transplanted Trees Inspected in the Reporting Period 36

Table 3.1: Summary of Environmental Complaints 39

Table 3.2: Statistics for Valid Exceedances for the Environmental Monitoring 40

Table 3.3: Statistics for Non-compliance, Complaints, Notifications of Summons and Prosecution 41

Figures

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 2.2	Water Quality Monitoring Stations
Figure 2.3	Vessel based Dolphin Monitoring Transects in Construction, Post-Construction, and Operation Phases
Figure 2.4	Land based Dolphin Monitoring Locations in Baseline and Construction Phases
Figure 2.5	Sightings Distribution of Chinese White Dolphins
Figure 2.6	Sighting Locations of Chinese White Dolphins with Different Group Sizes
Figure 2.7	Sighting Locations of Chinese White Dolphins Engaged in Different Behaviours
Figure 2.8	Sighting Locations of Mother-calf Pairs
Figure 2.9	(Not used)
Figure 2.10	Location for Passive Acoustic Monitoring
Figure 2.11	Schematic Diagram for Sewerage System Flow Monitoring
Figure 2.12	Sewerage System Collecting Sewage from Airport

Appendices

Appendix A	Project Organisation Chart
Appendix B	Environmental Mitigation Implementation Schedule (EMIS) for Construction Phase
Appendix C	Monitoring Results

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
EMIS	Environmental Mitigation Implementation Schedule
EP	Environmental Permit
EPD	Environmental Protection Department
EPSS	Emergency Power Supply Systems
ET	Environmental Team
FCZ	Fish Culture Zone
HKBCF	Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities
HKIA	Hong Kong International Airport
HSF	High Speed Ferry
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	Updated Marine Travel Routes and Management Plan for Construction and Associated Vessel
NEL	Northeast Lantau
NWL	Northwest Lantau
PAM	Passive Acoustic Monitoring
SC	Sha Chau
SCZ	Speed Control Zone
SCLKCMP	Sha Chau and Lung Kwu Chau Marine Park
SS	Suspended Solids
STG	Encounter Rate of Number of Dolphin Sightings
SWL	Southwest Lantau
T2	Terminal 2
The Manual	The Updated EM&A Manual
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
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 27^th Construction Phase Quarterly 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 July 2022 to 30 September 2022.

Key Activities in the Reporting Period

The key activities of the Project carried out in the reporting period included reclamation works and land-based works. Works in the reclamation areas included filling, seawall construction and land-based ground improvement works, together with runway, taxiways, concourse and associated works. Land-based works on existing airport island involved mainly airfield works, Terminal 2 expansion works, modification and tunnel work for Automated People Mover (APM) and Baggage Handling System (BHS), and preparation work for utilities, with activities include road and drainage works, cable ducting, demolition, piling, and excavation works.

EM&A Activities Conducted in the Reporting Period

The 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	96
Noise monitoring	50
Water quality monitoring	37
Vessel line-transect surveys for Chinese White Dolphin (CWD) monitoring	6
Land-based theodolite tracking survey effort for CWD monitoring	6

Environmental auditing works, including weekly 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.

In accordance with Section 6.2.1.1 of the Manual, the methodology of annual sewage flow monitoring for the existing gravity sewer from the airport discharge manhole to Tung Chung Sewage Pumping Station (TCSPS) should be prepared and submitted to EPD one year before the scheduled commencement of operation of the proposed third runway. As such, the sewage flow monitoring methodology paper was prepared, submitted and subsequently approved by EPD on 21 June 2021. The annual sewage flow monitoring has also been started since June 2021. According to the daily flow monitoring record of Sewage Pumping Station 1 (SPS-1) located at the Airport from July to September 2022 (see Appendix C), the daily average flow of 14,728 m³/day for July 2022, 15,116 m³/day for August 2022 and 12,232 m³/day for September 2022 were well below 80% of pipe full flow capacity of 53,395.2 m³/day as defined in Section 2.6.3 of the approved sewage flow monitoring methodology paper. For the subsequent sets of sewage flow monitoring data for SPS-1, it will be presented in upcoming Quarterly and Annual EM&A Reports.

Snapshots of Good Environmental Practices in the Reporting Period


Use of green mesh to minimise soil erosion and surface runoff	Use of solar-lighting along the haul road of construction site	Provision of sedimentation pit for the reuse of treated construction wastewater

Key examples of good site practices implemented in the Project are highlighted as below:

1. Green mesh was placed at the edge of excavation zone to minimise soil erosion and surface runoff.

2. Solar street lights were installed and implemented along the haul road of construction site to reduce energy consumption and provided an eco-friendly lighting service.

3. Sedimentation pit was provided for the storage of treated construction wastewater. All stored wastewater was reused subsequently for dust suppression and other construction activities.

Summary Findings of the EM&A Programme

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

Monitoring results of construction dust, construction noise, construction waste and CWD monitoring did not trigger the corresponding Action and Limit Levels in the reporting period.

The water quality monitoring results for all parameters, except dissolved oxygen (DO), obtained during the reporting period were within the corresponding Action and Limit Levels stipulated in the EM&A programme. Relevant investigation and follow-up actions will be conducted according to the EM&A programme if the corresponding Action and Limit Levels are triggered. For DO, some testing results triggered the relevant Action and Limit Levels, and the corresponding investigations were conducted accordingly. The investigation findings concluded that the cases were not related to the Project. To conclude, the construction activities in the reporting period did not introduce adverse impact to all water quality sensitive receivers.

The key findings of the EM&A programme during the reporting period are summarised as below:

	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
Complaints received in previous reporting period		√	A complaint regarding dust issue at 3RS construction site was received on 28 June 2022.	ET requested the relevant contractors to provide information related to the complaint. During regular site inspections, dust was observed when there were vehicle movements on haul roads and was rectified by the relevant contractor. A joint site inspection was conducted subsequently in which no fugitive dust was observed when there were vehicle movements at the concerned haul roads and the roads was wet during the inspection. All contractors were reminded to properly implement dust mitigation measures, especially water spraying at haul roads in accordance the implementation schedule in the Updated EM&A Manual. Hence, the case was considered closed.
		√	A complaint regarding dust issue at 3RS construction site was received on 28 June 2022.	ET requested the relevant contractor to provide information related to the complaint. During regular site inspections, dust was observed when there were vehicle movements on haul roads and was rectified by the relevant contractor. A joint site inspection was conducted subsequently in which no fugitive dust was observed when there were vehicle movements at the concerned haul roads and the roads was wet during the inspection. All contractors were reminded to properly implement dust mitigation measures, especially water spraying at haul roads in accordance the implementation schedule in the Updated EM&A Manual. Hence, the case was considered closed.
		√	A complaint regarding dust issue at 3RS construction site was received on 30 June 2022.	ET requested the relevant contractors to provide information related to the complaint. During regular site inspections, fugitive dust was observed at haul roads and stockpile areas and were rectified by the relevant contractors. A joint site inspection was conducted in which no fugitive dust was observed when there were vehicle movements at the concerned haul roads and the roads was wet during the inspection. Having said that, at another joint site inspection, fugitive dust was observed at stockpile area and was being rectified by the related contractor. All contractors were reminded to properly implement dust mitigation measures, especially water spraying at haul roads in accordance the implementation schedule in the Updated EM&A Manual. Hence, the case was considered closed.
Complaint received in this reporting period		√	No construction activities-related complaint was received in this reporting period.	Nil
Notification of any summons and status of prosecutions		√	No notification of summons nor prosecution was received.	Nil
Changes that affect the EM&A		√	There was no change to the construction works that may affect the EM&A.	Nil

Remarks:

^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, 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 summary of construction works programme can be referred to the corresponding Monthly EM&A Reports. Description of relevant contracts in the reporting period was presented in Appendix A of the Construction Phase Monthly EM&A Report No. 81.

1.2 Scope of this Report

This is the 27^th Construction Phase Quarterly EM&A Report for the Project which summarises the key findings of the EM&A programme during the reporting period from 1 July 2022 to 30 September 2022.

1.3 Project Organisation

The Project’s organisation structure is provided in Appendix A. Contact details of the key personnel have been updated and provided 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	3922 9376
	Deputy Independent Environmental Checker	Jackel Law	3922 9141

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

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 3302 Eastern Vehicular Tunnel Advance Works (China Road and Bridge Corporation)	Project Manager	Dickey Yau	5699 4503
	Environmental Officer	Dennis Ho	5645 0563
Contract 3303 Third Runway and Associated Works (SAPR Joint Venture)	Project Manager	Andrew Keung	6277 6628
	Environmental Officer	Gabriel Wong	6114 9590
Contract 3305 Airfield Ground Lighting System (ADB Safegate Hong Kong Limited)	Project Manager	Allam Al-Turk	2944 9725
	Environmental Officer	Calvin Sze	9205 9277
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 3307 Fire Training Facility (Paul Y. Construction Company Limited)	Project Manager	Ken Tang	9640 5397
	Environmental Officer	Ferddy Leung	5585 6746
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

Third Runway Concourse:

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 3403 New Integrated Airport Centres Building and Civil Works (Sun Fook Kong Construction Limited)	Project Manager	Alice Leung	9220 3162
	Environmental Officer	Ray Cheung	9785 1566
Contract 3404 Integrated Airport Control System (Shun Hing Systems Integration Co., Ltd.)	Project Manager	Andy Ng	9102 2739
	Safety Officer	Keith Chau	9620 7515
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)	Assistant Project Manager	Qian Zhang	5377 7976
	Environmental Officer	Malcolm Leung	7073 7559

Terminal 2 (T2) Expansion:

Party	Position	Name	Telephone
Contract 3508 Terminal 2 Expansion Works (Gammon Engineering & Construction Company Limited)	Project Director	Richard Ellis	6201 5637
Environmental Officer	Fanny Law	6184 4650

Party

Position

Name

Telephone

Contract 3508 Terminal 2 Expansion Works

(Gammon Engineering & Construction Company Limited)

Project Director

Richard Ellis

6201 5637

Environmental Officer

Fanny Law

6184 4650

Automated People Mover (APM) and Baggage Handling System (BHS):

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	Kunihiro Tatecho	9755 0351
	Environmental Officer	Y M Tong	5316 9801
Contract 3603 3RS Baggage Handling System (VISH Consortium)	Project Manager	K C Ho	9272 9626
Contract 3603 3RS Baggage Handling System (VISH Consortium)	Environmental Officer	Richard Ng	9802 9577

Construction Support (Facilities):

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 3723 Eastern Support Area – Construction Support Facilities (Tapbo Construction Company Limited and Konwo Modular House Ltd. Joint Venture.)	Deputy Project Director	Philip Kong	9337 8700
	Environmental Officer	Eddie Suen	6338 8862
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
	SHE Manager	Mike Leung	6625 2550

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 Construction Limited)	Project Director	John Adams	6111 6989
	Environmental Officer	Phoebe Ng	9869 1105

Construction Support (Services / Licences):

Party	Position	Name	Telephone
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 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

1.4 Contact information for the Project

The contact information for the Project is provided in Table 1.2. The public can contact us through the following channels if they have any queries and comments on the environmental monitoring data and project related information.

Table 1.2: Contact Information of the Project

Channels	Contact Information
Hotline	3908 0354
Email	env@3rsproject.com
Fax	3747 6050
Postal Address	Airport Authority Hong Kong HKIA Tower 1 Sky Plaza Road Hong Kong International Airport Lantau Hong Kong Attn: Environmental Team Leader Mr Terence Kong c/o Mr Lawrence Tsui (TRD)

1.5 Summary of Construction Works

The key activities of the Project carried out in the reporting period included reclamation works and land-based works. Works in the reclamation areas included filling, seawall construction and land-based ground improvement works, together with runway, taxiways, concourse and associated works. Land-based works on existing airport island involved mainly airfield works, Terminal 2 expansion works, modification and tunnel work for APM and BHS systems, and preparation work for utilities, with activities include road and drainage works, cable ducting, demolition, piling, and excavation works. The locations of the key construction activities are presented in Figure 1.1.

1.6 Summary of EM&A Programme Requirements

The status for all environmental aspects is presented in Table 1.3. The EM&A requirements remained unchanged during the reporting period.

Table 1.3: Summary of Status for 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 has been 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 has been 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 has been reported in Baseline Water Quality Monitoring Report and submitted to EPD under EP Condition 3.4.
General Impact Water Quality Monitoring for reclamation, water jetting and field joint works	Three days per week, at mid-flood and mid-ebb tides.	On-going for reclamation works. General impact water quality monitoring for water jetting works was completed on 23 May 2017.
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 and would be resumed if there are marine-based DCM works in the coming future.
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 has been started since June 2021.
Details of the routine 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 details of the routine H₂S monitoring system will be prepared and submitted to EPD at least one year before commencement of operation of 3RS.
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.
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.
CAR for Terminal 2 Emergency Power Supply System	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 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 on 5 January 2017.
Post-translocation 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.	On-going
Landscape and Visual
Landscape and 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 has been reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4.
Impact Monitoring	Weekly	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	On-going
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 the reporting period, impact monitoring of air quality, noise, water quality, waste management, landscape & visual, and CWD were carried out in the reporting period.

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

● Fifty-two environmental management meetings for EM&A review with works contracts.

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 B.

2 Environmental Monitoring and Auditing

2.1 Air Quality Monitoring

Impact 1-hour Total Suspended Particulates (TSP) monitoring was conducted three times every six days at two representative monitoring stations during the reporting period. The locations of monitoring stations are described in Table 2.1 and presented in Figure 2.1.

2.1.1 Action and Limit Levels

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 2.1 for reference.

Table 2.1: Impact Air Quality Monitoring Stations

Monitoring Station	Location	Action Level (mg/m³)	Limit Level (mg/m³)
AR1A	Man Tung Road Park	306	500
AR2	Village House at Tin Sum	298	500

2.1.2 Summary of Monitoring Results

The air quality monitoring results in the reporting period are summarised in Table 2.2 and the graphical plot is presented in Appendix C.

Table 2.2: Percentage of Air Quality Monitoring Results within Action and Limit Levels

	AR1A	AR2
Jul 2022	100%	100%
Aug 2022	100%	100%
Sep 2022	100%	100%
Overall	100%	100%
Note: The percentages are calculated by dividing the number of monitoring results within their corresponding Action and Limit Levels by the total number of monitoring results.

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

General meteorological conditions in the last month of the previous quarter and this reporting period were recorded and summarised in Table 2.3.

Table 2.3: General Meteorological Condition during Impact Air Quality Monitoring

	Weather	Dominant Wind Direction
Jun 2022	Sunny to Overcast	Southwest
Jul 2022	Sunny to Overcast	Southwest
Aug 2022	Sunny to Rainy	Southeast to Southwest
Sep 2022	Sunny	South to Southwest

2.1.3 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.

2.2 Noise Monitoring

Impact noise monitoring was conducted at four representative monitoring stations once per week during 0700 and 1900 in the reporting period. The locations of monitoring stations are described in Table 2.4 and presented in Figure 2.1.

2.2.1 Action and Limit Levels

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 2.4 for reference.

Table 2.4: Impact Noise Monitoring Stations

Monitoring Station	Location	Action Level	Limit Level
NM1A	Man Tung Road Park	When one documented complaint is received from any one of the sensitive receivers	75 dB(A)
NM4	Ching Chung Hau Po Woon Primary School		65dB(A) / 70 dB(A)⁽ⁱ⁾
NM5	Village House in Tin Sum		75 dB(A)
NM6	House No. 1, Sha Lo Wan		75 dB(A)
Note: ⁽ⁱ⁾ 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).

2.2.2 Summary of Monitoring Results

The noise monitoring results in the reporting period are summarised in Table 2.5 and the graphical plot is presented in Appendix C.

Table 2.5: Percentage of Noise Monitoring Results within Action and Limit Levels

	NM1A	NM4	NM5	NM6
Jul 2022	100%	100%	100%	100%
Aug 2022	100%	100%	100%	100%
Sep 2022	100%	100%	100%	100%
Overall	100%	100%	100%	100%
Note: The percentages are calculated by dividing the number of monitoring results within their corresponding Action and Limit Levels by the total number of monitoring results.

No complaints were received from any sensitive receiver that triggered the Action Level.

General meteorological conditions in the last month of the previous quarter and this reporting period were recorded and summarised in Table 2.6.

Table 2.6: General Meteorological Condition during Impact Noise Monitoring

	Weather
Jun 2022	Sunny to Overcast
Jul 2022	Sunny to Overcast
Aug 2022	Sunny to Rainy
Sep 2022	Sunny

2.2.3 Conclusion

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. As the sensitive receivers were far away from the construction activities, with the implementation of noise control measures, there was no adverse impact at the sensitive receivers attributable to the works of the Project.

2.3 Water Quality Monitoring

During the reporting period, water quality monitoring was conducted three days per week, at mid-flood and mid-ebb tides. Water quality monitoring was undertaken at a total of 14 water quality monitoring stations, comprising 6 impact (IM) stations, 5 sensitive receiver (SR) stations, and 3 control (C) stations in the vicinity of the water quality sensitive receivers around the existing airport island in accordance with the Manual.

The purpose of water quality monitoring at the IM stations is to promptly capture any potential water quality impacts from the Project before the impacts could become apparent at sensitive receivers (represented by the SR stations). Table 2.7 describes the details of the monitoring stations. Figure 2.2 shows the locations of the monitoring stations.

Table 2.7: Monitoring Locations and Parameters for Impact Water Quality Monitoring

Monitoring Station	Description	Coordinates		Parameters
		Easting	Northing
C1	Control Station	804247	815620	General Parameters DO, pH, Temperature, Salinity, Turbidity, SS
C2	Control Station	806945	825682
C3⁽²⁾	Control Station	817803	822109
IM1⁽⁴⁾	Impact Station	806458	818351
IM2⁽⁴⁾	Impact Station	806236	819183
IM7⁽⁴⁾	Impact Station	806835	821349
IM10⁽⁴⁾	Impact Station	809838	822240
IM11⁽⁴⁾	Impact Station	810545	821501
IM12⁽⁴⁾	Impact Station	811519	821162
SR1A⁽¹⁾	Hong Kong-Zhuhai-Macao Bridge Hong Kong Boundary Crossing Facilities (HKBCF) Seawater Intake for cooling	812660	819977	General Parameters DO, pH, Temperature, Salinity, Turbidity, SS
SR2	Planned marine park / hard corals at The Brothers / Tai Mo To	814166	821463	General Parameters DO, pH, Temperature, Salinity, Turbidity, SS
SR3	Sha Chau and Lung Kwu Chau Marine Park / fishing and spawning grounds in North Lantau	807571	822147	General Parameters DO, pH, Temperature, Salinity, Turbidity, SS
SR4A	Sha Lo Wan	807810	817189
SR8⁽³⁾	Seawater Intake for cooling at Hong Kong International Airport (East)	811623	820390

Notes:

(1) With the operation of HKBCF, water quality monitoring at SR1A station was commenced on 25 October 2018. To better reflect the water quality in the immediate vicinity of the intake, the monitoring location of SR1A has been shifted closer to the intake starting from 5 January 2019.

(2) According to the Baseline Water Quality Monitoring Report, C3 station is not adequately representative as a control station of impact/ SR stations during the flood tide. The control reference has been changed from C3 to SR2 from 1 September 2016 onwards.

(3) The monitoring location for SR8 is subject to further changes due to silt curtain arrangements and the progressive relocation of this seawater intake.

(4) With the seawall completion and removal of enhanced open sea silt curtains, these monitoring stations were relocated back to their original locations. For IM2, there was minor adjustment of the monitoring location.

2.3.1 Action and Limit Levels

The Action and Limit Levels for general water quality monitoring stipulated in the EM&A programme for triggering the relevant investigation and follow-up procedures under the programme are presented in Table 2.8. The control and IM stations during flood tide and ebb tide for general water quality monitoring are presented in Table 2.9.

Table 2.8: Action and Limit Levels for General Water Quality Monitoring

Parameters		Action Level (AL)		Limit Level (LL)
Action and Limit Levels for general water quality monitoring (excluding SR1A & SR8)
General Water Quality Monitoring	DO in mg/l (Surface, Middle & Bottom)	Surface and Middle 4.5mg/l		Surface and Middle 4.1mg/l
	DO in mg/l (Surface, Middle & Bottom)	Bottom 3.4mg/l		Bottom 2.7mg/l
	Suspended Solids (SS) in mg/l	23	or 120% of upstream control station at the same tide of the same day, whichever is higher	37	or 130% of upstream control station at the same tide of the same day, whichever is higher
	Turbidity in NTU	22.6		36.1
Action and Limit Levels SR1A
SS (mg/l))		33		42
Action and Limit Levels SR8
SS (mg/l)		52		60

Notes:

1. For DO measurement, Action or Limit Level is triggered when monitoring result is lower than the limits.

2. For parameters other than DO, Action or Limit Level of water quality results is triggered when monitoring results is higher than the limits.

3. Depth-averaged results are used unless specified otherwise.

Table 2.9: The Control and Impact Stations during Flood Tide and Ebb Tide for General Water Quality Monitoring

Control Station	Impact Stations
Flood Tide
C1	IM1, IM2, IM7, SR3
SR2¹	IM7, IM10, IM11, IM12, SR1A, SR3, SR4A, SR8
Ebb Tide
C1	SR4A
C2	IM1, IM2, IM7, IM10, IM11, IM12, SR1A, SR2, SR3, SR8

Notes:

1. As per findings of Baseline Water Quality Monitoring Report, the control reference has been changed from C3 to SR2 from 1 Sep 2016 onwards.

2.3.2 Summary of Monitoring Results

The summary or results within their corresponding Action and Limit Levels in the reporting period are presented in Table 2.10. The weather and sea conditions in the last month of the previous quarter and this reporting period were recorded and summarised in Table 2.11.

(1) The percentages are calculated by dividing the number of depth-averaged results complying with their corresponding Action and Limit Levels by the total number of depth-averaged results.

(2) The number in the bracket under the percentage represents the total number of depth-averaged results complying with their corresponding Action and Limit Levels over the total number of depth-averaged results.

Table 2.10: Percentage of Water Quality Monitoring Results within Action and Limit Levels

	General Water Quality Monitoring
	DO (Surface and Middle)	DO (Bottom)	SS	Turbidity
Jul 2022	97.5% (199/204)	87.3% (178/204)	100% (252/252)	100% (204/204)
Aug 2022	100% (204/204)	99.5% (203/204)	100% (252/252)	100% (204/204)
Sep 2022	100% (221/221)	100% (221/221)	100% (273/273)	100% (221/221)
Overall	99.2%	95.7%	100%	100%

General Water Quality Monitoring

(Surface and Middle)

(Bottom)

Turbidity

Jul 2022

97.5%

(199/204)

87.3%

(178/204)

100%

(252/252)

100%

(204/204)

Aug 2022

100%

(204/204)

99.5%

(203/204)

100%

(252/252)

100%

(204/204)

Sep 2022

100%

(221/221)

100%

(221/221)

100%

(273/273)

100%

(221/221)

Overall

99.2%

95.7%

100%

Notes:

(1) The percentages are calculated by dividing the number of depth-averaged results complying with their corresponding Action and Limit Levels by the total number of depth-averaged results.

Table 2.11: General Weather Condition and Sea Condition during Impact Water Quality Monitoring

	Weather	Sea Condition
Jun 2022	Sunny to Rainy	Calm to Rough
Jul 2022	Sunny to Rainy	Calm to Rough
Aug 2022	Sunny to Rainy	Calm to Rough
Sep 2022	Sunny to Rainy	Calm to Rough

The monitoring results for all parameters, except dissolved oxygen (DO), obtained during the reporting period were within their corresponding Action and Limit Levels stipulated in the EM&A programme. The detailed monitoring results are presented in Appendix C. Relevant investigation and follow-up actions will be conducted according to the EM&A programme if the corresponding Action and Limit Levels are triggered.

For DO, some of the testing results triggered the corresponding Action and Limit Levels in the reporting period, and investigations were conducted accordingly. Summaries of results triggering Action and Limit Levels for DO are presented in Table 2.12 to Table 2.15.

Details of the investigation findings were presented in Construction Phase Monthly EM&A Report No. 79 & 80, which concluded that all results triggering the Action and Limit Levels were not related to the Project.

Table 2.12: Summary of DO (Surface and Middle) Compliance Status (Mid-Ebb Tide)

	IM1	IM2	IM7	IM10	IM11	IM12	SR2	SR3	SR4A
28/07/2022	D								D
30/07/2022
No. of result triggering Action or Limit Level	1	0	0	0	0	0	0	1	1

Table 2.13: Summary of DO (Bottom) Compliance Status (Mid-Ebb Tide)

	IM1	IM2	IM7	IM10	IM11	IM12	SR2	SR3	SR4A
23/07/2022	D	D							D
26/07/2022	D	D			D				D
28/07/2022	D	D							D
23/08/2022									D
No. of result triggering Action or Limit Level	3	3	2	1	1	0	0	1	4

Table 2.14: Summary of DO (Surface + Middle) Compliance Status (Mid-Flood Tide)

	IM1	IM2	IM7	IM10	IM11	IM12	SR3	SR4A
26/07/2022
No. of result triggering Action or Limit Level	0	1	0	0	0	0	0	1

Table 2.15: Summary of DO (Bottom) Compliance Status (Mid-Flood Tide)

	IM1	IM2	IM7	IM10	IM11	IM12	SR3	SR4A
23/07/2022							D
26/07/2022				D			D
28/07/2022							D
No. of result triggering Action or Limit Level	2	3	0	1	1	0	3	2

Note: The monitoring results compiled with their corresponding Action or Limit Levels are presented in Appendix C.

Legend:
	Result within corresponding Action and Limit Levels
	Result triggered the Action Level at monitoring station located upstream of the Project based on dominant tidal flow
D	Result triggered the Action Level at monitoring station located downstream of the Project based on dominant tidal flow
	Result triggered the Limit Level at monitoring station located upstream of the Project based on dominant tidal flow
D	Result triggered the Limit Level at monitoring station located downstream of the Project based on dominant tidal flow
	Upstream station with respect to the Project during the respective tide based on dominant tidal flow
	Downstream station with respect to the Project during the respective tide based on dominant tidal flow

2.3.3 Conclusion

During the reporting period, it is noted that most of the monitoring results were within their corresponding Action and Limit Levels, while some results triggered the corresponding Action and Limit Levels, and investigations were conducted accordingly. Based on the findings presented in Construction Phase Monthly EM&A Report No. 79 & 80, the cases that triggered the corresponding Action and Limit Levels were not related to the Project. Hence, the Project did not introduce adverse impact to all water quality sensitive receivers. All required actions under the Event and Action Plan were followed.

Nevertheless, the non-project related trigger was attended to and initiated corresponding action and measures. As part of the EM&A programme, the construction methods and mitigation measures for water quality will continue to be monitored and opportunities for further enhancement will continue to be explored and implemented where possible, to strive for better protection of water quality and the marine environment.

In the meantime, the contractors were reminded to implement and maintain all mitigation measures during weekly site inspections and regular environmental management meetings. These include maintaining mitigation measures properly for reclamation works including filling, seawall construction and ground improvement works as recommended in the Manual.

2.4 Waste Monitoring

In accordance with the Manual, waste generated from construction activities was audited once per week to determine if wastes were 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.

2.4.1 Action and Limit Levels

The Action and Limit Levels of the construction waste are provided in Table 2.16.

Table 2.16: 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

2.4.2 Summary of Monitoring Results

Weekly monitoring of the Project construction works was carried out by the ET in the reporting period to check and monitor the implementation of proper waste management practices.

Recommendations made by the ET included provision and maintenance of proper chemical waste storage area, as well as handling, segregation, and regular disposal of general refuse. The contractors had 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 B.

Based on updated contractors’ information, summary of construction waste generated in the reporting period is presented in Table 2.17. ET and IEC have carried out site audits regularly and reviewed the trip ticket system.

The contractors have established the recycling strategy for C&D materials with proper planning and design to maximize recycling and reuse. Dedicated recyclers were employed for different kinds of recyclable materials by the contractors. 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 2.17: Construction Waste Statistics

	C&D⁽¹⁾ Material Stockpiled for Reuse or Recycle (m³)	C&D Material Reused in the Project (m³)	C&D Material Reused in other Projects (m³)	C&D Material Transferred to Public Fill⁽²⁾ (m³)	Chemical Waste (kg)	Chemical Waste (l)	General Refuse (tonne)
Jul 2022	44,288	4,682	30,029	11,485	0	0	1,953
Aug 2022	19,018	72,312	2,990	9,006	0	0	1,915
Sep 2022	7,051	77,917	11,226	5,452	240	3,800	1,857
Total	70,357	154,911	44,245	25,943	240	3,800	5,725
Notes: 1. C&D refers to Construction and Demolition. 2. C&D materials not suitable for reuse on-site, including asphalt waste and sediment slurry, were transferred to public fill during the reporting period.

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

2.4.3 Marine Sediment Management

Marine sediment is managed according to the EIA Report, Updated EM&A Manual and 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 sampling process, storage conditions of the excavated marine sediment, treatment process, final backfilling location as well as associated 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.

Sampling works and backfilling works for marine sediment generated from the reclaimed land area were conducted during the reporting period. The details of the marine sediment sampling, treatment and backfilling can be referred to Annual EM&A Reports No.6.

2.5 Chinese White Dolphin Monitoring

CWD monitoring was conducted by vessel line transect survey at a frequency of two full surveys per month, supplemented by land-based theodolite tracking survey and PAM. The frequency of the land-based theodolite tracking survey during the construction phase was one day per month at both Sha Chau (SC) and Lung Kwu Chau (LKC) stations, as stipulated in the Manual. The vessel survey transects followed the transect lines proposed in the Manual and are consistent with those used in the Agriculture, Fisheries and Conservation Department (AFCD) long-term CWD monitoring programme. The transect locations of CWD monitoring by vessel line transect survey are shown in Figure 2.3, whilst the land-based theodolite tracking survey stations are described in Table 2.18 and depicted in Figure 2.4. The location of the PAM device is shown in Figure 2.10.

Table 2.18: Land-based Theodolite Tracking Survey Station Details

Stations	Location	Geographical Coordinates	Station Height (m)	Approximate Tracking Distance (km)
D	Sha Chau (SC)	22° 20’ 43.5” N 113° 53’ 24.66” E	45.66	2
E	Lung Kwu Chau (LKC)	22° 22’ 44.83” N 113° 53’ 0.2” E	70.40	3

Stations

Location

Geographical Coordinates

Station Height (m)

Approximate Tracking Distance (km)

Sha Chau (SC)

22° 20’ 43.5” N

113° 53’ 24.66” E

45.66

Lung Kwu Chau (LKC)

22° 22’ 44.83” N

113° 53’ 0.2” E

70.40

2.5.1 Action and Limit Levels

The Action Level and Limit Level for CWD monitoring were formulated by an action response approach using the running quarterly dolphin encounter rates (STG and ANI) derived from baseline monitoring data, as presented in the CWD Baseline Monitoring Report. The derived values of Action and Limit Levels for CWD monitoring are shown in Table 2.19.

Table 2.19: Derived Values of Action Level and Limit Level for Chinese White Dolphin Monitoring

	NEL, NWL, AW, WL and SWL as a Whole
Action Level	Running quarterly STG < 1.86 & ANI < 9.35
Limit Level	Two consecutive running quarterly (3-month) STG < 1.86 & ANI < 9.35

2.5.2 Summary of Monitoring Results

2.5.2.1 Vessel Line Transect Survey

Survey Effort

During the July to September 2022 reporting period, a total of six sets of vessel line transect survey covering all transects in Northeast Lantau (NEL), Northwest Lantau (NWL), Airport West (AW), West Lantau (WL) and Southwest Lantau (SWL) survey areas were conducted at a frequency of twice per month, in each survey area.

A total of around 1,327 km of survey effort was collected from these surveys, with around 98.3% of the total survey effort being conducted under favourable weather condition (i.e. Beaufort Sea State 3 or below with favourable visibility). Details of the survey effort data are presented in Appendix C.

CWD Sighting

From July to September 2022, there were a total of 58 sightings of CWD, with 186 dolphins sighted (Table 2.20: Summary of Number of CWD Sightings and Number of Dolphins for the Same Quarter Last Year, Previous Quarter, and Current Reporting Period). Amongst these sightings, 57 sightings with 185 dolphins were recorded during on-effort searches under favourable weather condition.

When breaking down the sightings by survey areas, two sightings with three dolphins, 24 sightings with 101 dolphins and 32 sightings with 82 dolphins were recorded in NWL, WL and SWL respectively during the current reporting period. No CWD was sighted in AW transects or NEL survey area.

Compared with the previous quarter (i.e. April to June 2022), both the total number of CWD sightings and total number of the dolphins increased by 29% and 12% respectively. These results were attributed to a notable increase of the dolphin sightings in SWL survey area and increase of the number of dolphins in WL survey area. In contrast, the number of sightings and number of dolphins in NWL decreased slightly from last quarter.

Compared with the same quarter of last year (i.e. July to September 2021), there were increases in both the total number of sightings and the total number of dolphins by 14% and 13% respectively. The most noticeable increase was reflected from the SWL survey area, while decreases in the total number of sightings and the total number of dolphins in NWL survey area were observed.

Table 2.20 below shows the comparison of the numbers of sightings and dolphins amongst the current reporting period, last quarter, and the same quarter of last year.

Table 2.20: Summary of Number of CWD Sightings and Number of Dolphins for the Same Quarter Last Year, Previous Quarter, and Current Reporting Period

	Same Quarter of Last Year	Previous Reporting Period	Current Reporting Period
	July to September 2021	April to June 2022	July to September 2022
NEL	0 (0)	0 (0)	0 (0)
NWL	9 (20)	4 (8)	2 (3)
AW	0 (0)	0 (0)	0 (0)
WL	29 (105)	25 (83)	24 (101)
SWL	13 (39)	16 (75)	32 (82)
Total	51 (164)	45 (166)	58 (186)

Note: Values in ( ) represent number of dolphins

The distribution of CWD sightings recorded from July to September 2022 is illustrated in Figure 2.5. In NWL, there were CWD sightings recorded near Lung Kwu Chau. In WL, CWD sightings were scattered over the waters from North of Tai O to Fan Lau, with relatively more sightings clustered around Peaked Hill and Fan Lau. In SWL, CWD sightings were scattered amongst the entire survey area. No CWD sightings were recorded in NEL survey area during the reporting period. Details of the sighting data are presented in Appendix C.

Figure 2.5: Sightings Distribution of Chinese White Dolphins from July to September 2022

Remarks: (1) Please note that there are 58 pink circles on the map indicating the sighting locations of CWD. Some of them were very close to each other and therefore appear overlapped on this sighting distribution map. (2) Marine park excludes land area and the landward boundary generally follows the high water mark along the coastline.

Encounter Rate

The dolphin encounter rates for the number of on-effort dolphin sightings per 100 km survey effort (STG) and for the total on-effort number of dolphins per 100 km survey effort (ANI) in the whole survey area (i.e. NEL, NWL, AW, WL and SWL) for July, August and September 2022 are summarised in Table 2.21.

In this reporting period, both the monthly STG and ANI decreased from July to September 2022 (STG: from 7.24 to 2.32; ANI: from 20.31 to 7.42), causing a similar course in running quarterly STG and ANI. No Action Level for CWD monitoring was triggered during the reporting period.

Compared with the previous reporting period (i.e. April to June 2022), both the running quarterly STG and ANI increased from June to September 2022 (STG: from 3.50 to 4.37; ANI from 12.93 to 14.18). While comparing with the same quarter of last year (i.e. July to September 2021), both the running quarterly STG and ANI increased, from 3.84 to 4.37 and from 12.38 to 14.18 respectively. Encounter rates for these periods are summarised in Table 2.21 and graphical presentation is provided in Appendix C.

Table 2.21: Summary of Monthly and Running Quarterly STG and ANI of Chinese White Dolphin for the Same Quarter Last Year, Previous Quarter, and Current Reporting Period

	Same Quarter of Last Year			Previous Reporting Period			Current Reporting Period
	Jul 21	Aug 21	Sep 21	Apr 22	May 22	Jun 22	Jul 22	Aug 22	Sep 22
Monthly STG	6.84	1.32	3.55	2.00	4.83	3.80	7.24	3.59	2.32
Monthly ANI	21.22	4.19	12.29	4.89	18.36	16.16	20.31	14.82	7.42
Running Quarterly STG	4.39	3.69	3.84	1.93	2.93	3.50	5.30	4.87	4.37
Running Quarterly ANI	12.98	11.32	12.38	7.02	11.19	12.93	18.29	17.07	14.18

Note: For detailed calculations of encounter rates STG and ANI for the current reporting period, please refer to the Construction Phase Monthly EM&A Report Nos. 79, 80, and 81.

Group Size

Between July and September 2022, the group size of CWD sightings ranged from 1 to 15 dolphins. The average group size of CWD was 3.21 dolphins per group, which is smaller than that of the last quarter (3.69 dolphins per group). The average group size of CWD in this reporting quarter is similar to that of the same quarter of last year (3.22 dolphins per group).

In this reporting quarter, more than half of the CWD sightings are with small group size (i.e. 1-2 dolphins). Amongst the 58 sightings, there were two CWD sightings with large group size (i.e. 10 or more dolphins) recorded in this reporting period. These two large CWD groups were sighted at waters around Fan Lau in both WL and SWL survey areas.

There are no observable differences in the distribution pattern between small-sized and medium-sized dolphin groups in WL as they all scattered. In SWL, the small groups appeared to distribute closer to the western part of survey area while medium groups appeared closer to the Soko Islands and Lo Kei Wan. In NWL, only small-sized dolphin groups were observed. Sighting locations of CWD groups with different group sizes are depicted in Figure 2.6.

Figure 2.6: Sighting Locations of Chinese White Dolphins with Different Group Sizes

Remarks: (1) Please note that there are 58 circles on the map indicating the sighting locations of CWD. Some of them were very close to each other and therefore appear overlapped on this sighting distribution map. (2) Marine park excludes land area and the landward boundary generally follows the high water mark along the coastline.

Activities and Association with Fishing Boats

From July to September 2022, 15 sightings of CWD were recorded with foraging activities. Amongst them, four sightings were observed associated with operating purse seiner in SWL survey area.

The number of sightings with foraging recorded in the current reporting period is higher than that in the previous reporting period (i.e. 13 sightings involved foraging activities between April and June 2022). The number of CWD sightings with foraging activities in this reporting period is also slightly higher than that in the same quarter of last year (i.e. 14 sightings between July and September 2021).

The sighting locations of CWDs engaged in different behaviours during the current reporting period are illustrated in Figure 2.7.

Figure 2.7: Sighting Locations of Chinese White Dolphins Engaged in Different Behaviours

Remarks: Marine park excludes land area and the landward boundary generally follows the high water mark along the coastline.

Mother-calf Pairs

From July to September 2022, eight sightings of CWD were recorded with the presence of mother-and-unspotted juvenile pairs and/or mother-and-unspotted calf pairs observed, which is lower than that recorded in the previous reporting quarter (i.e. 10 sightings between April and June 2022). The number of CWD sightings with the presence of mother-calf pairs is slightly higher than that recorded in the same quarter of last year (i.e. seven sightings between July and September 2021). These eight sightings were recorded in WL and SWL survey areas.

The locations of CWD sightings with the presence of mother-calf pairs are shown in Figure 2.8.

Figure 2.8: Sighting Locations of Mother-calf Pairs

Remarks: (1) Please note that there are 8 circles on the map indicating the sighting locations of Mother-Calf pairs. (2) Marine park excludes land area and the landward boundary generally follows the high water mark along the coastline.

Photo Identification

Between July and September 2022, a total number of 57 different CWD individuals were identified altogether for 87 times. Re-sighting information of CWD individuals provides an initial idea of their range use and apparent connection between different areas of Lantau waters. Amongst these 57 different CWD individuals, 19 animals (i.e. NLMM015, NLMM085, SLMM002, SLMM014, SLMM023, SLMM029, SLMM035, SLMM037, SLMM044, SLMM049, WLMM003, WLMM007, WLMM018, WLMM049, WLMM056, WLMM063, WLMM067, WLMM083 and WLMM131) were sighted for more than once.

Eight individuals including SLMM002, SLMM029, SLMM035, SLMM044, SLMM049, WLMM003, WLMM063 and WLMM067 were re-sighted in different survey areas during this reporting period. The most frequently re-sighted individuals in this reporting quarter are SLMM002, SLMM014, SLMM037 and WLMM131, while all of them were successfully identified for four times. The number of CWD individuals re-sighted more than once is as same as that of previous reporting quarter from April to June 2022, while the number of CWD individuals showing cross-area movement in the current reporting period is lower.

A summary of photo identification works is presented in Table 2.22. Representative photos of the 57 identified individuals and figures depicting the sighting locations of the aforementioned eight individuals re-sighted in different survey areas in this reporting period are presented in Appendix C.

Table 2.22: Summary of Photo Identification

Individual ID	Date of sighting	Sighting Group No.	Area	Individual ID	Date of sighting	Sighting Group No.	Area
NLMM013	9-Sep-22	2	NWL	WLMM003	11-Jul-22	1	WL
NLMM015	23-Aug-22	2	WL		13-Jul-22	7	SWL
	19-Sep-22	1	WL	WLMM004	2-Aug-22	2	SWL
NLMM016	23-Aug-22	2	WL	WLMM007	23-Aug-22	5	WL
NLMM028	9-Sep-22	2	NWL		19-Sep-22	3	WL
NLMM039	22-Aug-22	2	WL	WLMM018	8-Jul-22	4	WL
NLMM040	22-Aug-22	4	WL		19-Sep-22	2	WL
NLMM058	11-Jul-22	2	WL	WLMM019	11-Jul-22	1	WL
NLMM061	12-Jul-22	15	SWL	WLMM029	23-Aug-22	5	WL
NLMM063	13-Jul-22	6	SWL	WLMM038	8-Jul-22	2	WL
NLMM085	12-Jul-22	3	SWL	WLMM043	20-Sep-22	1	WL
		6	SWL	WLMM047	12-Jul-22	10	SWL
SLMM002	12-Jul-22	2	SWL	WLMM049	12-Jul-22	13	SWL
		4	SWL		13-Jul-22	10	SWL
	13-Jul-22	4	SWL	WLMM052	8-Jul-22	2	WL
	19-Sep-22	3	WL	WLMM056	2-Aug-22	2	SWL
SLMM003	2-Aug-22	1	SWL		3-Aug-22	3	SWL
SLMM014	12-Jul-22	2	SWL		6-Sep-22	12	SWL
		7	SWL	WLMM063	2-Aug-22	2	SWL
	13-Jul-22	3	SWL		23-Aug-22	5	WL
	2-Aug-22	2	SWL	WLMM067	2-Aug-22	2	SWL
SLMM023	23-Aug-22	6	WL		23-Aug-22	2	WL
	19-Sep-22	2	WL			3	WL
SLMM027	11-Jul-22	2	WL	WLMM076	12-Jul-22	13	SWL
SLMM029	12-Jul-22	8	SWL	WLMM079	2-Aug-22	2	SWL
	19-Sep-22	3	WL	WLMM081	11-Jul-22	2	WL
SLMM035	23-Aug-22	5	WL	WLMM083	8-Jul-22	2	WL
	6-Sep-22	12	SWL			3	WL
SLMM037	12-Jul-22	2	SWL	WLMM092	23-Aug-22	2	WL
	2-Aug-22	1	SWL	WLMM109	2-Aug-22	2	SWL
		2	SWL	WLMM114	19-Sep-22	3	WL
	6-Sep-22	12	SWL	WLMM131	12-Jul-22	1	SWL
SLMM044	2-Aug-22	2	SWL			4	SWL
	19-Sep-22	2	WL		6-Sep-22	12	SWL
	19-Sep-22	3	WL			16	SWL
SLMM049	2-Aug-22	2	SWL	WLMM135	2-Aug-22	2	SWL
	19-Sep-22	2	WL	WLMM151	23-Aug-22	5	WL
SLMM050	13-Jul-22	4	SWL	WLMM164	19-Sep-22	1	WL
SLMM052	2-Aug-22	2	SWL	WLMM176	8-Jul-22	2	WL
SLMM059	23-Aug-22	6	WL	WLMM177	8-Jul-22	1	WL
SLMM060	12-Jul-22	9	SWL	WLMM178	8-Jul-22	2	WL
SLMM074	8-Jul-22	4	WL	WLMM179	11-Jul-22	4	WL
SLMM075	22-Aug-22	4	WL	WLMM180	11-Jul-22	4	WL
SLMM076	22-Aug-22	4	WL

2.5.2.2 Land-based Theodolite Tracking Survey

Survey Effort

Between July and September 2022, a total of six days of land-based theodolite tracking survey effort were completed, including three days on Lung Kwu Chau and three days on Sha Chau. No CWD group was tracked from the Lung Kwu Chau and Sha Chau stations during the reporting quarter.

Information on survey effort and CWD groups sighted during land-based theodolite tracking surveys are presented in Table 2.23. Details on the survey effort and CWD groups tracked are presented in Appendix C.

Table 2.23: Summary of Survey Effort and CWD Group of Land-based Theodolite Tracking Survey

Land-based Station	# of Survey Sessions	Survey Effort (hh:mm)	# CWD Groups Sighted	CWD Group Sighting per Survey Hour
July 2022
Lung Kwu Chau	1	06:00	0	0
Sha Chau	1	06:00	0	0
TOTAL	2	12:00	0	0
August 2022
Lung Kwu Chau	1	06:00	0	0
Sha Chau	1	06:00	0	0
TOTAL	2	12:00	0	0
September 2022
Lung Kwu Chau	1	06:00	0	0
Sha Chau	1	06:00	0	0
TOTAL	2	12:00	0	0
OVERALL	6	36:00	0	0

2.5.2.3 Progress Update on PAM

PAM device has been deployed and positioned to the south of Sha Chau island within the SCLKCMP (Figure 2.10) to supplement the detection of CWD presence in the south Sha Chau area that are not recorded visually by the land-based theodolite tracking survey and to coincide the theodolite data when there is sighting from the land-based station at Sha Chau. Both C-POD and F-POD are considered as effective PAM devices in detecting CWD occurrence, and F-POD was the main PAM device deployed where feasible. In this reporting period, the F-POD was retrieved on 11 August 2022 for data collection and subsequently re-deployed. As the period of data collection and analysis takes more than four months, PAM results could not be reported in quarterly intervals but report for supplementing the annual CWD monitoring analysis.

2.5.2.4 Site Audit for CWD-related Mitigation Measures

During the reporting period, silt curtains were in place by the contractors for marine filling works, in which dolphin observers were deployed by the contractor in accordance with the Marine Mammal Watching Plan (MMWP). Teams of at least two dolphin observers were deployed at 1 to 3 dolphin observation stations by the contractors for continuous monitoring of the DEZ for seawall construction works in accordance with the DEZ Plan. Trainings for the proposed dolphin observers on the implementation of MMWP and DEZ monitoring were provided by the ET prior to the aforementioned works, with a cumulative total of 704 individuals being trained and the training records were kept by the ET. From the contractors’ DEZ monitoring records, no dolphin or other marine mammals were observed within or around the DEZ in this reporting period. The contractors’ records were also audited by the ET during site inspection.

Audits of acoustic decoupling for construction vessels were carried out during weekly site inspection and summarised in Section 2.7. Summary of audits of SkyPier HSFs route diversion and speed control and construction vessel management are presented in Section 2.8 and Section 2.9 respectively.

2.6 Sewage Flow Monitoring

In accordance with the approved EIA Report (AEIAR-185/2014) for Expansion of Hong Kong International Airport into a Three-Runway System (3RS), the gravity sewer from the airport discharge manhole to TCSPS was recommended to be upgraded by AAHK to cater for the ultimate design sewage flow from the expanded airport. It was recommended in section 6.2.1.1 of the Manual that AAHK should conduct annual monitoring for the sewage flow build-up of the gravity sewer from the airport discharge manhole to TCSPS one year before the scheduled commencement of operation of the proposed third runway. The annual monitoring results shall inform the timing of commencement of the planning of the sewer upgrading works. The sewage flow monitoring methodology paper (the Paper) was prepared, submitted and subsequently approved by EPD on 21 June 2021.

2.6.1 Brief Summary of the Agreed Method

With reference to the Paper, the existing sewer to be monitored is the section between FMH7042035 (reference point A) and FMH7043286 (reference point C). A schematic diagram of the sewage system between reference point A and C is presented in Figure 2.11. The locations of these reference points are presented in Figure 2.12. To determine if the threshold of 80% of the design capacity is being reached, an approach using the Colebrook-White equation was used.

Two pipe segments between reference points A and C were identified with the lowest flow capacity and therefore selected as the benchmark for comparing the actual sewage flow of the sewers for the flow monitoring:

● Segment 1: for sewage pipelines serving the airport – the critical segment is the 1050mm sewer between manholes FMH7042032 and FMH7042033, where the 80% threshold of full flow capacity is 53,395.2 m³/day; and

● Segment 2: for the sewage pipelines serving the airport and catchment L4 – the critical segment is the 1050mm sewer between manholes FMH7043288 and FMH7043287, where the of 80% threshold of full flow capacity is 57,628.8 m³/day.

According to the Paper, segment 1 would reach its 80% full flow capacity before segment 2. Hence, segment 1 was considered the critical segment within the section between reference points A and C, and it was agreed to conduct sewage flow monitoring for segment 1 only. With the daily flow rate of SPS-1, which collects sewage arising from the Airport, is available from AAHK, desk-based flow monitoring would be conducted by comparing the daily average flow rate of SPS-1 (i.e. Q1) against the threshold of 80% of pipe capacity of segment 1 (i.e. 53,395.2 m³/day) in accordance with the following criteria:

● If Q1 ≤ 53,395.2 m³/day, planning of sewerage upgrading works can be on hold until results of next annual monitoring; and

● If Q1 > 53,395.2 m³/day, planning of sewerage upgrading works shall be considered to start and annual monitoring shall be discontinued.

Within the monitoring period, if the daily average flow rate of SPS-1 (i.e. Q1) is higher than the threshold of 53,395.2 m³/day, planning of sewerage upgrading works shall be considered to start and the annual monitoring shall be discontinued. The above approach was agreed to be adopted as part of annual monitoring for the sewage flow increment of the concerned gravity sewer in 2021 and 2022.

2.6.2 Desk-Based Monitoring Result

To fulfil the requirements as mentioned in previous section, the annual sewage flow monitoring has been started since June 2021. According to the daily flow monitoring record of SPS-1 from July to September 2022 (see Appendix C), the daily average flow of 14,728 m³/day for July 2022, 15,116 m³/day for August 2022 and 12,232 m³/day for September 2022 were well below the above-mentioned threshold of 53,395.2 m³/day. For the subsequent sets of sewage flow monitoring data for SPS-1, it would be presented in upcoming Quarterly and Annual EM&A Reports.

2.7 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. 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 appropriate 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 implemented in the project to enhance environmental performance. Key examples implemented in the Project are highlighted as below:

1. Green mesh was placed at the edge of excavation zone to minimise soil erosion and surface runoff.

2. Solar street lights were installed and implemented along the haul road of construction site to reduce energy consumption and provided an eco-friendly lighting service.

3. Sedimentation pit was provided for the storage of treated construction wastewater. All stored wastewater was subsequently being reused for dust suppression and other construction activities.


Use of green mesh to minimise soil erosion and surface runoff	Use of solar-lighting along the haul road of construction site	Provision of sedimentation pit for the reuse of treated construction wastewater

Besides, 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 B.

2.7.1 Landscape and Visual Mitigation Measures

Implementation of applicable landscape and visual mitigation measures (reference to the environmental protection measures CM1 – CM10 in Appendix B) is monitored regularly in accordance with the Manual. The implementation status of the environmental protection measures is summarised in Table 2.24. For trees which were managed under the Project during the reporting period, relevant measures have been implemented by Contracts 3302, 3303, 3508 and 3801. The total number of retained trees, transplanted trees and to-be-transplanted trees under the management of Project are summarized in Table 2.25.

The total number of retained trees of the Project as of September 2022 was 36. Compared to 45 retained trees reported in the previous reporting period, the change in number was due to the following reasons:

· Some trees near Airport North Interchange under Contract 3801 were removed due to potential safety issues along Airport Express Line (AEL) railway track (-9 nos).

Table 2.26 lists the affected tree ID together with the reasons for change of retained tree status of the Project.

The cumulative total number of transplanted trees of the Project remained unchanged (i.e. 26 nos.) comparing with previous reporting quarter. Twelve trees under Contract 3508 transitioned from establishment period to long term management period during the reporting period and managed by Contract 3508 currently. Details of the summary of transplanted trees is shown in Table 2.27. Photos of the transplanted trees are presented in Table 2.28.

Table 2.24: Landscape and Visual – Construction Phase Audit Summary

Landscape and Visual Mitigation Measures during Construction Implementation Status	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 were checked by ET during weekly site inspection and clarified 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 have been provided in the relevant Contract Specifications respectively for implementation by the Contractors under the Project. The Contractors’ performance on the implementation of the trees maintenance and protection measures were observed and checked by the ET weekly during construction period.	3302, 3508, 3801
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 have been provided in the relevant Contract Specifications respectively for implementation by the Contractors under the Project where trees will 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 were currently monitored by ET annually.	3508, 3801
CM 10 – Land formation works shall be followed with advanced hydroseeding around taxiways and runways as soon as practical	The Contractor’s performance on the implementation of advanced hydroseeding works was observed and checked by the ET during weekly site inspection.	3303

Table 2.25: Summary of the Number of Retained, Transplanted and To-be-transplanted Trees in the Reporting Period

Existing
Contract	Retain (nos.)	Transplanted (nos.)		To-be-transplanted (nos.)
Contract	Retain (nos.)	Establishment Period	Maintenance Period	To-be-transplanted (nos.)
3302	9	0	0	0
3503	0	0	9	0
3508⁽¹⁾	24	0	12	0
3602	0	0	0	0
3801	3	0	5 ⁽²⁾	0
Sub-total	36	0	26	0
Provisional
Contract	Retain (nos.)	Transplanted (nos.)		To-be-transplanted (nos.)
3508⁽¹⁾	50	0		10
Sub-total	50	0		10
Grand Total	86	26		10

Notes:

(1) As some of the site areas have been handed over to Contract 3508, existing trees to be managed by Contract 3508 is subject to change after initial tree surveys for each batch of handed over site areas have been conducted by the Contractor.

(2) Three transplanted trees (CT1194, CT1794 and CT1795) were subsequently fell after transplantation. Please refer to Table 2.27 for details.

Table 2.26: Summary of the Tree Status Updated in the Reporting Period

Tree ID(s)	Contract	Previous Status (June 2022)	Current Status (September 2022)	Remarks	Impact to Retain Tree Number
CT1406, CT1407, CT1411, CT1413, CT1414, CT1415, CT1416, CT1418, T6	3801	Retain	Fell	9 nos. of trees were removed due to potential safety issues along Airport Express Line (AEL) railway track.	- 9 nos.

Tree ID(s)

Contract

Status

(June 2022)

Current

Status

(September 2022)

Remarks

Impact to Retain Tree Number

CT1406,

CT1407,

CT1411,

CT1413,

CT1414,

CT1415,

CT1416,

CT1418,

3801

Retain

Fell

9 nos. of trees were removed due to potential safety issues along Airport Express Line (AEL) railway track.

- 9 nos.

Table 2.27: 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	Next inspection will be conducted in February 2023. Photos of the last inspection in February 2022 can be referred to Table 7.7 of the Construction Phase Monthly EM&A Report No.74.
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	Next inspection will be conducted in February 2023. Photos of the last inspection in February 2022 can be referred to Table 7.7 of the Construction Phase Monthly EM&A Report No.74.
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	Next inspection will be conducted in December 2022. Photos of the last inspection in December 2021 can be referred to Table 7.7 of the Construction Phase Monthly EM&A Report No.72.
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	Next inspection will be conducted in July 2023. Photos of the last inspection in July 2022 were shown in Table 2.26.
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	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	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	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.

Table 2.28: Photos of the Existing Transplanted Trees Inspected in the Reporting Period

Under 10-year Long-term Management:

T1493	T1494	T1495

T1496	T1497	T1498

T1499	T1500	T1501

T1502	T1503	T1504

2.7.2 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 has issued no further comment for aforesaid CARs. No leakage was found after the removal of underground fuel pipelines 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. Based on the latest construction information, which has been presented in Appendix A Implementation Schedule of the approved CARs for T2 EPSS, there is no development programme for these locations at this stage. As such, the status of site re-appraisal/ additional site investigation will be further updated upon latest development programme is available.

2.8 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.

Due to the COVID-19 pandemic, all SkyPier HSF services to/from Zhuhai and Macau have been suspended from 25 March 2020 until further notice. Limited HSF services from other destination, which does not require the use of the diverted route, were provided starting from 28 October 2020.

No ferry movement between HKIA SkyPier to/from Zhuhai and Macau was recorded in the reporting period. The daily movements of all SkyPier HSFs in the reporting period, including those not using the diverted route, ranged between 3 and 8, which fell within the maximum daily cap number of 125.

The construction works of the Hong Kong Offshore LNG Terminal Project were carried out from Q1 to Q3 2022. However, there was no implication to the route diversion operation of the SkyPier HSFs since all SkyPier HSF services to /from Zhuhai and Macau were suspended. ET will continue to closely monitor the implementation of the SkyPier Plan.

2.9 Audit of Construction and Associated Vessels

On the implementation of the updated Marine Travel Routes and Management Plan for Construction and Associated Vessels (MTRMP-CAV), the Maritime Surveillance System (MSS) automatically recorded deviation cases such as speeding, entering no entry zone, and not traveling through the designated gates. ET conducted bi-weekly audit of relevant information including AIS data, vessel tracks and other relevant records to ensure sufficient information were provided by the system and the contractors complied with the requirements of the MTRMP-CAV. The contactors submitted 3-month rolling vessel plans for construction vessel activities to AAHK in order to help maintain the number of construction vessels to a practicable minimum. The IEC also performed audit on the compliance of the requirements as part of the EM&A programme.

During the reporting period, deviations including speeding within the works area, entry from non-designated gates, and entering no-entry zones were identified. After investigation by the contractor’s Construction Traffic Control Centre (CTCC) representatives, all the concerned captains were reminded to comply with the requirements of the MTRMP-CAV.

A total of 6 skipper training workshops were held with 12 captains by contractors’ Environmental Officers and competency tests were conducted subsequently with the trained captains by ET.

2.10 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.

3 Report on Non-compliance, Complaints, Notifications of Summons and Prosecutions

3.1 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.

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

3.2.1 Complaints

No environmental complaint was received during the reporting period. The environmental complaints as received in June 2022 were attended to and investigations were conducted by the ET in accordance with the Manual and the Complaint Management Plan. A summary of the complaints and analyses is presented in Table 3.1.

Table 3.1: Summary of Environmental Complaints

Date of Complaint Received	Details	Analysis/ Remedial Actions	Status
28 June 2022	A complaint regarding dust issue at 3RS construction site was received.	A complaint regarding dust issue at 3RS construction site area was received on 28 June 2022. The case was investigated by ET in accordance with the Manual and the Complaint Management Plan of the Project. From the photos provided by the complainant, ET recognized the locations, identified the related contractors and requested them to provide information regarding the complaint. According to the information received, the contractors reported they had assigned water tankers to carry out water spraying to the concerned locations. The contractors also reviewed their dust control layout plan and provided enhanced mitigation measure such as refresher training to their water tanker drivers. At ET’s weekly site inspections, dust was observed when there were vehicle movements on haul roads and was rectified by the related contractor. At a subsequent joint site inspection, no fugitive dust was observed when there were vehicle movements at the concerned haul roads and the roads were wet during inspection. All contractors were reminded to properly implement dust mitigation measures, especially water spraying at haul roads in accordance with the implementation schedule in the Updated EM&A Manual. Hence, the case was considered closed.	Closed
28 June 2022	A complaint regarding dust issue at 3RS construction site was received.	A complaint regarding dust issue at 3RS construction site area was received on 28 June 2022. The case was investigated by ET in accordance with the Manual and the Complaint Management Plan of the Project. From the photos provided by the complainant, ET recognized the location, identified a related contractor and requested them to provide information regarding the complaint. The contractor replied they had arranged water trucks to carry out water spraying at the concerned location. The contractors also reviewed their dust control layout plan and provided enhanced mitigation measures such as refresher training to their water tanker drivers and added water tanker to the fleet. At ET’s weekly site inspections, dust was observed during vehicle movements on main haul roads and was rectified by the related contractor. At a subsequent joint site inspection, no fugitive dust was observed when there were vehicle movements at the concerned haul roads and the roads were wet during inspection. All contractors were reminded to properly implement dust mitigation measures, especially water spraying at haul roads in accordance with the implementation schedule in the Updated EM&A Manual. Hence, the case was considered closed.	Closed
30 June 2022	A complaint regarding dust issue at 3RS construction site was received.	A complaint regarding dust issue at 3RS construction site was received on 30 June 2022. The case was investigated by ET in accordance with the Manual and the Complaint Management Plan of the Project. The ET recognized the location, identified related contractors and requested them to provide information regarding the complaint. According to the information received, the contractors reported they had reviewed their dust control layout plan and provided their watering records and photo records to the ET. Review of the received records indicated the contractors had provided water spraying at the concerned location during the alleged period. Besides, the contractors had also conducted refresher training with their water truck drivers regarding the arrangement for water spraying at the site areas. At ET’s weekly site inspections, fugitive dust was observed at haul roads and stockpile areas, and were rectified by the related contractors. During a joint inspection, no fugitive dust was observed when there were vehicle movements at the concerned haul roads and the roads were wet during inspection. Having said that, at another joint site inspection, fugitive dust was observed at stockpile area and was being rectified by the related contractor. ET and IEC would continue to monitor contractors’ performance on dust suppression and mitigation in accordance with the respective dust control layout plan. All contractors were reminded to properly implement dust mitigation measures in accordance with the implementation schedule in the Updated EM&A Manual. Hence, the case was considered closed.	Closed

3.2.2 Notifications of Summons or Status of Prosecution

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

3.3 Cumulative Statistics

Cumulative statistics on valid exceedance, non-compliance, complaints, notifications of summons and status of prosecutions are summarised in Table 3.2 and Table 3.3.

Table 3.2: Statistics for Valid Exceedances for the Environmental Monitoring

		Total No. Recorded in the Reporting Period	Total No. Recorded since the Project Commenced
1-hr TSP	Action Level	0	0
	Limit Level	0	0
Noise	Action Level	0	0
	Limit Level	0	0
Waste	Action Level	0	1
	Limit Level	0	0
Water	Action Level	0	0
	Limit Level	0	0
CWD	Action Level	0	0
	Limit Level	0	0

Remark: Non-project related triggers of Action or Limit Level are not shown in this table.

Table 3.3: Statistics for Non-compliance, Complaints, Notifications of Summons and Prosecution

Reporting Period	Cumulative Statistics
	Non-compliance	Complaints	Notifications of Summons	Prosecutions
This reporting period	0	0	0	0
From 28 December 2015 to end of the reporting period	0	55	2	2

4 Conclusion and Recommendation

In the third quarter of 2022, the EM&A programme has been implemented as planned, including 96 sets of air quality measurements, 50 sets of construction noise measurements, 37 sets of water quality measurements, 6 complete sets of vessel line transect surveys and 6 days of land-based theodolite tracking survey effort for CWD monitoring, as well as environmental site inspections and waste monitoring for the Project’s construction works.

The key activities of the Project carried out in the reporting period included reclamation works and land-based works. Works in the reclamation areas included filling, seawall construction and land-based ground improvement works, together with runway, taxiways, concourse and associated works. Land-based works on existing airport island mainly involved airfield works, Terminal 2 expansion works, modification and tunnel work for APM and BHS, and preparation work for utilities, with activities include road and drainage works, cable ducting, demolition, piling, and excavation works.

Monitoring results of construction dust, construction noise, construction waste and CWD monitoring did not trigger the corresponding Action and Limit Levels during the reporting period.

For water quality, the water quality monitoring results for all parameters, except DO, obtained during the reporting period were within the corresponding Action and Limit Levels stipulated in the EM&A programme. Relevant investigation and follow-up actions will be conducted according to the EM&A programme if the corresponding Action and Limit Levels are triggered. For DO, some testing results triggered the relevant Action and Limit Levels, and the corresponding investigations were conducted accordingly. The investigation findings concluded that the cases were not related to the Project. In summary, the construction activities undertaken during the reporting period did not introduce adverse impact to all water quality sensitive receivers.

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. Site inspection findings were recorded in the site inspection checklists and provided to the contractors to follow up.

No HSF movement between HKIA SkyPier to/from Zhuhai and Macau was recorded during the reporting period. Therefore, no deviation was recorded in the HSF monitoring during the reporting period.

During the reporting period, ET conducted bi-weekly audit of the MSS to ensure the system recorded all deviation cases accurately and the contractors fully complied with the requirements of the MTRMP-CAV. A total of 6 skipper training workshops were held by contractors’ Environmental Officers during the reporting period and competency tests were conducted subsequently with the trained skippers by ET.

On the implementation of MMWP and DEZ Plan, dolphin observers were deployed by the contractors in accordance with the plans. No dolphin or other marine mammals were observed within or around the DEZ in this reporting period. Audits of contractors’ implementation and records, and also acoustic decoupling for construction vessels were carried out by the ET during site inspection.

The recommended environmental mitigation measures, as included in the EM&A programme, were effectively implemented during the reporting period. Also, the EM&A programme implemented by the ET has effectively monitored the construction activities and ensured the proper implementation of mitigation measures.

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