Contents

Abbreviations

Executive summary

1 Introduction

1.1 Background

1.2 Scope of this Report

1.3 Project Organisation

1.4 Contact information for the Project

1.5 Summary of Construction Works

1.6 Summary of EM&A Programme Requirements

2 Environmental Monitoring and Auditing

2.1 Air Quality Monitoring

2.1.1 Action and Limit Levels

2.1.2 Summary of Monitoring Results

2.1.3 Conclusion

2.2 Noise Monitoring

2.2.1 Action and Limit Levels

2.2.2 Summary of Monitoring Results

2.2.3 Conclusion

2.3 Water Quality Monitoring

2.3.1 Action and Limit Levels

2.3.2 Summary of Monitoring Results

2.3.3 Conclusion

2.4 Waste Monitoring

2.4.1 Action and Limit Levels

2.4.2 Summary of Monitoring Results

2.4.3 Marine Sediment Management

2.5 Chinese White Dolphin Monitoring

2.5.1 Action and Limit Levels

2.5.2 Summary of Monitoring Results

2.6 Sewage Flow Monitoring

2.6.1 Brief Summary of the Agreed Method

2.6.2 Desk-Based Monitoring Result

2.7 Environmental Site Inspection

2.7.1 Landscape and Visual Mitigation Measures

2.7.2 Land Contamination Assessment

2.8 Audit of SkyPier High Speed Ferries

2.9 Audit of Construction and Associated Vessels

2.10 Review of the Key Assumptions Adopted in the EIA Report

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

3.1 Compliance with Other Statutory Environmental Requirements

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

3.2.1 Complaints

3.2.2 Notifications of Summons or Status of Prosecution

3.3 Cumulative Statistics

4 Conclusion and Recommendation

Tables

Table 1.1: Contact Information of Key Personnel 7

Table 1.2: Contact Information of the Project 11

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  15

Table 2.2: Percentage of Air Quality Monitoring Results within Action and Limit Levels  15

Table 2.3: General Meteorological Condition during Impact Air Quality Monitoring  15

Table 2.4: Impact Noise Monitoring Stations  16

Table 2.5: Percentage of Noise Monitoring Results within Action and Limit Levels  16

Table 2.6: General Meteorological Condition during Impact Noise Monitoring  17

Table 2.7: Monitoring Locations and Parameters for Impact Water Quality Monitoring  17

Table 2.8: Action and Limit Levels for General Water Quality Monitoring and Regular DCM Monitoring  19

Table 2.9: The Control and Impact Stations during Flood Tide and Ebb Tide for General Water Quality Monitoring and Regular DCM Monitoring  19

Table 2.10: Percentage of Water Quality Monitoring Results within Action and Limit Levels  20

Table 2.11: General Weather Condition and Sea Condition during Impact Water Quality Monitoring  20

Table 2.12: Summary of DO (Surface and Middle) Compliance Status (Mid-Ebb Tide) 20

Table 2.13: Summary of DO (Bottom) Compliance Status (Mid-Ebb Tide) 20

Table 2.14: Summary of DO (Surface and Middle) Compliance Status (Mid-Flood Tide) 21

Table 2.15: Summary of DO (Bottom) Compliance Status (Mid-Flood Tide) 21

Table 2.16: Summary of SS Compliance Status (Mid-Ebb Tide) 21

Table 2.17: Action and Limit Levels for Construction Waste  22

Table 2.18: Construction Waste Statistics  23

Table 2.19: Land-based Theodolite Tracking Survey Station Details  23

Table 2.20: Derived Values of Action Level and Limit Level for Chinese White Dolphin Monitoring  24

Table 2.21: Summary of Number of CWD Sightings and Number of Dolphins for the Same Quarter Last Year, Previous Quarter, and Current Reporting Period  24

Table 2.22: 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  26

Table 2.23: Summary of Photo Identification  30

Table 2.24: Summary of Survey Effort and CWD Group of Land-based Theodolite Tracking Survey  31

Table 2.25: Landscape and Visual – Construction Phase Audit Summary  36

Table 2.26: Summary of the Number of Retained, Transplanted and To-be-transplanted Trees in the Reporting Period  37

Table 2.27: Summary of the Tree Status Updated in the Reporting Period  37

Table 2.28: Summary of the Transplanted Trees Updated in the Reporting Period  38

Table 2.29: Photos of the Existing Transplanted Trees in the Reporting Period  40

Table 3.1: Summary of Environmental Complaints  43

Table 3.2: Statistics for Valid Exceedances for the Environmental Monitoring  46

Table 3.3: Statistics for Non-compliance, Complaints, Notifications of Summons and Prosecution  46

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	Plots of First Sightings of All CWD Groups from Land-based Stations
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
Figure 2.13	Locations of Newly Transplanted Trees during the Reporting Period

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.

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).

This is the 22^nd 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 April 2021 to 30 June 2021.  

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 deep cement mixing (DCM) works, marine filling, seawall and facilities construction, together with runway and associated works. Land-based works on existing airport island involved mainly airfield works, foundation and substructure work for Terminal 2 expansion, modification and tunnel work for Automated People Mover (APM) and Baggage Handling System (BHS), and preparation work for utilities, with activities include site establishment, site office construction, 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	39
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 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 for June 2021 (see Appendix C), the daily average flow of 13,460 m³/day was 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 different colour labels for PME operating at different period during restricted hours	Use of construction equipment with valid QPME Label	Use of impervious liners for the prevention of potential leachate seepage of marine sediment

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

1. Different coloured labels were applied to Powered Mechanical Equipment (PME) being used at different period during restricted hours. Contractor’s frontline staff could easily identify the types of PME that can be used at a specific period.

2. Construction equipment with valid Quality Powered Mechanical Equipment (QPME) label was used at the construction site. This practice demonstrated that contractors’ equipment was notably quieter, more environmentally friendly and efficient.

3. Impervious liners were used for the prevention of potential leachate seepage from treated marine sediment storage area.

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 waste, and CWD monitoring did not trigger the corresponding Action and Limit Levels in the reporting period.

One monitoring result of construction noise triggered the Limit Level in the reporting period, and the corresponding investigation was conducted as stipulated in the EM&A programme. The investigation findings concluded that the case was not due to the Project.

The water quality monitoring results for all parameters, except dissolved oxygen (DO) and suspended solids (SS), 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 and SS, some testing results triggered the relevant Action or 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	√		A complaint regarding alleged dusty and muddy vehicles from Three Runway System Project at Tuen Mun Public Cargo Working Area was received on 20 April 2021.	ET requested the relevant contractors to provide information related to the complaint. Regular site inspections were conducted in which wheel washing on vehicles prior to leaving their works area was observed. For ad hoc inspections, soil and sands on road surface in Tuen Mun Public Cargo Working Area and dusty surfaces at North Eastern Quay on 3RS reclaimed land were both observed.  To follow up, the contractors are reminded to ensure the wheels of outgoing vehicles from their site area are properly washed. Haul road connected to the quay would be paved and manual wheel washing would be implemented continuously. In the long term, an enhanced wheel washing measure is planned at the quays. The case was considered closed.
			A complaint regarding dust issue was received on 14 May 2021.	ET requested the relevant contractor to provide information related to the complaint. Regular site inspections and joint inspections were conducted in which sprinklers and water trucks were observed operating. ET also checked the wind speed at the Chek Lap Kok wind station and the result might suggest the presence of sudden gust. Based on the information provided by the contractor and ET’s findings, the dust generation might be caused by sudden gust. Nevertheless, the contractor was reminded to continue implementing mitigation measures on dust control. The case was considered closed.
			A complaint regarding sand material blown from stockpiling area of 3RS project was received on 21 June 2021.	ET requested the relevant contractors to provide information related to the complaint. Regular site inspections and joint inspection were conducted and no observation related to dust issue was recorded. Besides, inactive and idle stockpiles were covered and water spraying actions on active stockpiles were conducted and had been enhanced.  All contractors were reminded to continue implementing their mitigation measures on dust control on stockpiles. The case was considered closed.
			A complaint regarding dust issue at the eastern quay of the Project was received on 21 June 2021.	ET requested the relevant contractors to provide information related to the complaint. Regular site inspections and ad-hoc inspection were conducted in which no observation related to dust issue was recorded. ET also observed contractor was conducting water spraying at concerned area during ET’s site inspection. Nevertheless, all contractors were reminded to continue implementing water spraying properly and adequately at their work areas. ET and IEC would continue to monitor contractors' dust suppression measures during environmental site inspections and the implementation of these measures at the concerned area. Hence, the complaint case was considered closed.
			A complaint regarding muddy water from the Project was received on 28 June 2021.	ET requested the relevant contractors to provide information related to the complaint. Regular site inspections and joint inspection were conducted in which no illegal discharge was identified in the checklists. Moreover, Hong Kong Observatory issued four Amber Rainstorm Warning Signals on 22, 23, 24 June which might suggest heavy rainfall resulting in surface runoff at the alleged area. To follow up, ET would remind the contractors to pay attention on the possibility of surface run off, especially during rainy season and carry out further improvement on current measures if needed. Hence, the complaint case was considered closed.
Notification of any summons and status of prosecutions		√	No notification of summons or prosecution were 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. 64.

1.2 Scope of this Report

This is the 22^nd 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 April 2021 to 30 June 2021.

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 Leader	Heidi Yu	2828 5704
Independent Environmental Checker (IEC) (AECOM Asia Company Limited)	Independent Environmental Checker	Jackel Law	3922 9376
	Deputy Independent Environmental Checker	Roy Man	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 1451

Airfield Works:

Party	Position	Name	Telephone
Contract 3301 North Runway Crossover Taxiway (FJT-CHEC-ZHEC Joint Venture)	Deputy Project Director	Kin Hang Chung	9800 0048
	Environmental Officer	Joe Wong	6182 0351
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	Max Chin	6447 5707
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 3307 Fire Training Facility (Paul Y. Construction Company Limited)	Project Manager	Steven Meredith	6109 1813
	Environmental Officer	Albert Chan	9700 1083
Contract 3310 North Runway Modification Works and BHS Tunnels on Existing Airport Island	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.)	Contract Manager	Michael Kan	9206 0550
	Environmental Officer	Lisa He	5374 3418
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 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 3503 Terminal 2 Foundation and Substructure Works (Leighton – Chun Wo Joint Venture)	Project Manager	Eric Wu	3973 1718
	QA & Environmental Manager	Jerry Chang	6323 9345
Contract 3508 Terminal 2 Expansion Works (Gammon Engineering & Construction Company Limited)	Project Director	Richard Ellis	6201 5637
	Environmental Manager	Michelle Tang	9267 8866

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	P L Wong	9143 2185
Contract 3602 Existing APM System Modification Works (Niigata Transys Co., Ltd.)	Project Manager	Kunihiro Tatecho	9755 0351
	Environmental Officer	Carrie Kwan	9276 0551
Contract 3603 3RS Baggage Handling System (VISH Consortium)	Project Manager	K C Ho	9272 9626
	Environmental Officer	Eric Ha	9215 3432

Construction Support (Facilities):

Party	Position	Name	Telephone
Contract 3721 Construction Support Infrastructure Works (China State Construction Engineering (Hong Kong) Ltd.)	Site Agent	Thomas Lui	9011 5340
	Environmental Officer	Xavier Lam	9493 2944
Contract 3722 Western Support Area – Construction Support Facilities (Tapbo Construction Company Limited and Konwo Modular House Limited Joint Venture)	Deputy Project Director	Philip Kong	9049 3161
	Environmental Officer	Eddie Suen	6338 8862
Contract 3723 Eastern Support Area – Construction Support Facilities (Tapbo Construction Company Limited and Konwo Modular House Ltd. Joint Venture.)	Deputy Project Director	Philip Kong	9049 3161
	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	K F Li	9086 1793

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
	Safety Manager	Joe Tang	9861 3818
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)	Senior Project Manager	Gabriel Chan	2435 3260
	Environmental Officer	Rex Wong	2695 6319

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 DCM works, marine filling, seawall and facilities construction, together with runway and associated works. Land-based works on existing airport island involved mainly airfield works, foundation and substructure work for Terminal 2 expansion, modification and tunnel work for APM and BHS systems, and preparation work for utilities, with activities include site establishment, site office construction, road and drainage works, cable ducting, demolition of existing facilities, piling, and excavation works.

The locations of the key construction activities are presented in Figure 1.1. The latest layout of enhanced silt curtain can be referred to Figure 1.2 of the Construction Phase Monthly EM&A Report No. 63.

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 May 2021, regular DCM monitoring was ceased at all monitoring stations starting from 24 June 2021 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 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:

● Four skipper trainings provided by ET; and

● Fifty-one 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/m^3)	Limit Level (mg/m^3)
AR1A	Man Tung Road Park	306	500
AR2	Village House at Tin Sum	298

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
Apr 2021	100%	100%
May 2021	100%	100%
Jun 2021	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
Mar 2021	Cloudy	Southwest
Apr 2021	Sunny to Cloudy	Southwest
May 2021	Sunny to Cloudy	Southwest
Jun 2021	Sunny to Cloudy	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
Apr 2021	100%	100%	100%	100%
May 2021	75%	100%	100%	100%
Jun 2021	100%	100%	100%	100%
Overall	91.7%	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.

One of the monitoring results triggered the corresponding Limit Level at NM1A on 28 May 2021. Actions were taken accordingly based on the established Event and Action Plan as presented in the Manual. Details of the investigation findings are presented in Construction Phase Monthly EM&A Report No. 65, which concluded that the case was not related to the Project.

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
Mar 2021	Cloudy
Apr 2021	Sunny to Cloudy
May 2021	Sunny to Cloudy
Jun 2021	Sunny to Cloudy

2.2.3 Conclusion

During the reporting period, it is noted that the vast majority of monitoring results were within their corresponding Action and Limit Levels, while only one result triggered the corresponding Limit Level, and investigation was conducted accordingly. Based on the findings presented in Construction Phase Monthly EM&A Report No.65, the case that triggered the corresponding Limit Level was not due to the Project. Therefore, the Project did not cause adverse impact at the noise sensitive receivers. All required actions under the Event and Action Plan were followed.

As the construction activities were far away from the monitoring stations, major sources of noise dominating the monitoring stations observed during the construction noise impact monitoring were traffic noise and cicadas chirping near NM1A, school activities at NM4, and aircraft noise near NM5 and NM6. 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, at a total of 23 water quality monitoring stations, comprising 12 impact (IM) stations, 8 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.

Due to the completion of all marine-based DCM works within May 2021, regular DCM monitoring was ceased at all monitoring stations starting from 24 June 2021 and would be resumed if there are marine-based DCM works in the coming future.

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

Monitoring Station	Description	Coordinates Easting                                 Northing		Parameters
C1	Control Station	804247	815620	General Parameters DO, pH, Temperature, Salinity, Turbidity, SS DCM Parameters Total Alkalinity, Heavy Metals^(^2)
C2	Control Station	806945	825682
C3^(3)	Control Station	817803	822109
IM1	Impact Station	807132	817949
IM2	Impact Station	806166	818163
IM3	Impact Station	805594	818784
IM4	Impact Station	804607	819725
IM5	Impact Station	804867	820735
IM6	Impact Station	805828	821060
IM7	Impact Station	806835	821349
IM8	Impact Station	808140	821830
IM9	Impact Station	808811	822094
IM10	Impact Station	809794	822385
IM11	Impact Station	811460	822057
IM12	Impact Station	812046	821459
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^(3)	Planned marine park / hard corals at The Brothers / Tai Mo To	814166	821463	General Parameters DO, pH, Temperature, Salinity, Turbidity, SS DCM Parameters Total Alkalinity, Heavy Metals^(^2)(4)
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
SR5A	San Tau Beach SSSI	810696	816593
SR6A^(^5)	Tai Ho Bay, Near Tai Ho Stream SSSI	814739	817963
SR7	Ma Wan Fish Culture Zone (FCZ)	823742	823636
SR8^(6)	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.

(2) Details of selection criteria for the two heavy metals for regular DCM monitoring refer to the Detailed Plan on Deep Cement Mixing available on the dedicated 3RS website (http://env.threerunwaysystem.com/en/ep-submissions.html).  DCM specific water quality monitoring parameters (total alkalinity and heavy metals) were only conducted at C1 to C3, SR2, and IM1 to IM12.

(3) 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.

(4) Total alkalinity and heavy metals results are collected at SR2 as a control station for regular DCM monitoring.

(5) As the access to SR6 was obstructed by the construction activities and temporary structures for Tung Chung New Town Extension, the monitoring location has been relocated to SR6A starting from 8 August 2019.

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

2.3.1 Action and Limit Levels

The Action and Limit Levels for general water quality monitoring and regular DCM 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 and regular DCM monitoring are presented in Table 2.9.

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

Parameters	Action Level		Limit Level
Action and Limit Levels for general water quality monitoring and regular DCM monitoring (excluding SR1A & SR8)
DO in mg/l (Surface, Middle & Bottom)	Surface and Middle 4.5 mg/l		Surface and Middle 4.1 mg/l 5 mg/l for Fish Culture Zone (SR7) only
	Bottom 3.4 mg/l		Bottom 2.7 mg/l
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
Total Alkalinity in ppm	95		99
Representative Heavy Metals for regular DCM monitoring (Chromium)^(^6)	0.2		0.2
Representative Heavy Metals for regular DCM monitoring (Nickel)^(6)	3.2		3.6
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.

4. Details of selection criteria for the two heavy metals for regular DCM monitoring refer to the Detailed Plan on Deep Cement Mixing available on the dedicated 3RS website http://env.threerunwaysystem.com/en/ep-submissions.html)

5. The Action and Limit Levels for the two representative heavy metals chosen will be the same as that for the intensive DCM monitoring.

6. In view of the construction programme for marine-based DCM works, regular DCM monitoring was ceased since 24 June 2021 and would be resumed if there are marine-based DCM works in the coming future.

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

Control Station	Impact Stations
Flood Tide
C1	IM1, IM2, IM3, IM4, IM5, IM6, IM7, IM8, SR3
SR2^1	IM7, IM8, IM9, IM10, IM11, IM12, SR1A, SR3, SR4A, SR5A, SR6A, SR8
Ebb Tide
C1	SR4A, SR5A, SR6A
C2	IM1, IM2, IM3, IM4, IM5, IM6, IM7, IM8, IM9, IM10, IM11, IM12, SR1A, SR2, SR3, SR7, SR8

Note:

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.

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

	General Water Quality Monitoring				Regular DCM Monitoring
	DO (Surface and Middle)	DO (Bottom)	SS	Turbidity	Alkalinity	Chromium	Nickel
Apr 2021	100% (455/455)	100% (455/455)	100% (507/507)	100% (455/455)	100% (312/312)	100% (312/312)	100% (312/312)
May 2021	100% (455/455)	100% (455/455)	99.8% (506/507)	100% (455/455)	100% (312/312)	100% (312/312)	100% (312/312)
Jun 2021	86.2% (392/455)	98.9% (450/455)	100% (507/507)	100% (455/455)	100% (240/240)	100% (240/240)	100% (240/240)
Overall	95.4%	99.6%	99.9%	100%	100%	100%	100%
Note: (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 2.11: General Weather Condition and Sea Condition during Impact Water Quality Monitoring

	Weather	Sea Condition
Mar 2021	Sunny to Rainy	Calm to Rough
Apr 2021	Sunny to Rainy	Calm to Rough
May 2021	Sunny to Rainy	Calm to Rough
Jun 2021	Sunny to Rainy	Calm to Rough

The monitoring results for all parameters, except dissolved oxygen (DO) and suspended solid (SS), 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 and SS, some of the testing results triggered the corresponding Action or Limit Levels in the reporting period, and investigations were conducted accordingly. Summaries of results triggering Action or Limit Levels for DO and SS are presented in Table 2.12 to Table 2.16.

Details of the investigation findings were presented in Construction Phase Monthly EM&A Report Nos. 65 and 66, which concluded that all results triggering the Action or Limit Levels were not related to the Project.

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

IM1

IM2

IM3

IM4

IM5

IM6

IM7

IM8

IM9

IM10

IM11

IM12

SR2

SR3

SR4A

SR5A

SR6A

SR7

05/06/2021

D

D

D

D

24/06/2021

D

D

D

D

D

D

D

D

D

26/06/2021

D

D

D

D

D

D

D

D

No. of result triggering Action or Limit Level

3

3

3

3

2

2

2

2

1

0

0

2

1

2

2

1

1

2

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

	IM1	IM2	IM3	IM4	IM5	IM6	IM7	IM8	IM9	IM10	IM11	IM12	SR2	SR3	SR4A	SR5A	SR6A	SR7
24/06/2021			D
No. of result triggering Action or Limit Level	0	0	1	0	1	1	0	0	0	0	0	0	0	0	0	0	0	0

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

IM1

IM2

IM3

IM4

IM5

IM6

IM7

IM8

IM9

IM10

IM11

IM12

SR3

SR4A

SR5A

SR6A

SR7

05/06/2021

24/06/2021

D

D

D

D

D

D

D

26/06/2021

D

D

D

D

D

No. of result triggering Action or Limit Level

1

3

3

2

2

2

1

1

2

2

2

2

2

2

1

1

2

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

	IM1	IM2	IM3	IM4	IM5	IM6	IM7	IM8	IM9	IM10	IM11	IM12	SR3	SR4A	SR5A	SR6A	SR7
24/06/2021
26/06/2021
No. of result triggering Action or Limit Level	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	1

Table 2.16: Summary of SS Compliance Status (Mid-Ebb Tide)

	IM1	IM2	IM3	IM4	IM5	IM6	IM7	IM8	IM9	IM10	IM11	IM12	SR1A	SR2	SR3	SR4A	SR5A	SR6A	SR7	SR8
27/05/2021														D
No. of result triggering Action or Limit Level	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0

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 monitoring results were within their corresponding Action and Limit Levels, while some results triggered the corresponding Action or Limit Levels, and investigations were conducted accordingly. Based on the findings presented in Construction Phase Monthly EM&A Report Nos. 65 and 66, the cases that triggered the corresponding Action or 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 DCM works, marine filling and seawall construction 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 2.17.

Table 2.17: 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 2.18. Proactive measures have been undertaken during the re-configuration of T2 building. The contractor has 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 contractor, and ET and IEC have carried out site visits to recyclers’ facilities to review recycling process. Dedicated areas for sorting of materials are established on site. Recyclable materials such as steel, reinforcement bar, structural steel, aluminium, copper, other metals and glass are sorted on-site and transported off-site for recycling. ET and IEC have carried out site audits regularly and reviewed the trip ticket system.  

Table 2.18: Construction Waste Statistics 

	C&D^(^1) Material Stockpiled for Reuse or Recycle (m^3)	C&D Material Reused in the Project (m^3)	C&D Material Reused in other Projects (m^3)	C&D Material Transferred to Public Fill^(^3) (m^3)	Chemical Waste (kg)	Chemical Waste (l)	General Refuse (tonne)
Apr 2021^(2)	29,633	57,644	1,766	4,140	0	0	1,194
May 2021^(2)	18,053	45,070	1,444	10,377	0	2,800	1,076
Jun 2021^(2)	17,809	106,196	0	5,169	120	800	1,235
Total	65,495	208,910	3,210	19,686	120	3,600	3,505
Notes: 1. C&D refers to Construction and Demolition. 2. Paper, metals and/or plastics were recycled in the reporting period. 3. 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 the 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 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.

Sampling works for marine sediment generated from the reclaimed land area was on-going during the reporting period. The details of the marine sediment sampling, treatment and backfilling will be reported in the subsequent EM&A Reports upon completion.

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 conducted from April to June 2021 are shown in Figure 2.3, whilst the land-based theodolite tracking survey stations are described in Table 2.19 and depicted in Figure 2.4. The location of the PAM device is shown in Figure 2.10.

Table 2.19: 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

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 2.20.

Table 2.20: 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 April to June 2021 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 1,345 km of survey effort was collected from these surveys, with around 77.2% 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 April to June 2021, there were a total of 28 sightings of CWDs, with 80 dolphins sighted (Table 2.21). Amongst these sightings, 27 sightings with 78 dolphins were recorded during on-effort searches under favourable weather condition.

When breaking down the sightings by survey areas, 13 sightings with 39 dolphins were recorded in WL while 15 sightings with 41 dolphins were recorded in SWL during the current reporting period. No CWD was sighted in NEL and NWL survey areas.

Compared with the last quarter (i.e. January to March 2021), both the total number of CWD sightings and total number of the dolphins decreased by 35% and 49% respectively. Such drops were attributed by the drops in sightings and number of dolphins in NWL and WL survey areas. On the other hand, there were increases in both the number of sightings and number of dolphins in SWL compared with the last quarter.

Compared with the same quarter of last year (i.e. April to June 2020), there were declines in terms of both the total number of CWD sightings and the total number of dolphins by 32% and 55% respectively, mainly attributed by the drops in sightings and dolphins in WL survey area.

Table 2.21 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 2.21: 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
	April to June 2020	January to March 2021	April to June 2021
NEL	0 (0)	0 (0)	0 (0)
NWL	0 (0)	14 (65)	0 (0)
AW	0 (0)	0 (0)	0 (0)
WL	26 (121)	23 (82)	13 (39)
SWL	15 (57)	6 (11)	15 (41)
Total	41 (178)	43 (158)	28 (80)

Note: Values in ( ) represent number of dolphins

The distribution of CWD sightings recorded from April to June 2021 is illustrated in Figure 2.5. In WL, the majority of CWD sightings were scattered from Tai O to Peaked Hill. In SWL, most of the dolphin sightings were recorded in the western side of the survey area. No CWD sightings were recorded in NEL and NWL survey areas during the reporting period. Details of the sighting data are presented in Appendix C.

Figure 2.5: Sightings Distribution of Chinese White Dolphins from April to June 2021

Remarks: (1) Please note that there are 28 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 April, May and June 2021 are summarised in Table 2.22.

In this reporting period, both the running quarterly STG and ANI decreased from April to May 2021 but followed by an increase in June 2021. No Action Level for CWD monitoring was triggered during the reporting period. For the monthly STG and ANI, both show increases from 2.02 and 6.65 in April 2021 to 2.86 and 8.25 in June 2021 respectively.

Compared with the previous reporting period (i.e. January to March 2021), the running quarterly STG decreased from 3.45 in March 2021 to 2.60 in June 2021 and the running quarterly ANI also decreased from 12.69 in March 2021 to 7.51 in June 2021. While comparing with the same quarter of last year (i.e. April to June 2020), both the running quarterly STG and ANI decreased, from 3.13 to 2.60 and from 13.86 to 7.51 respectively. Encounter rates for these periods are summarised in Table 2.22 and graphical presentation is provided in Appendix C. 

Table 2.22: 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
	Apr 20	May 20	Jun 20	Jan 21	Feb 21	Mar 21	Apr 21	May 21	Jun 21
Monthly STG	1.58	2.12	5.86	4.19	4.17	1.97	2.02	2.91	2.86
Monthly ANI	6.77	13.91	21.47	17.44	15.93	4.42	6.65	7.68	8.25
Running Quarterly STG	2.36	2.03	3.13	3.82	4.12	3.45	2.76	2.30	2.60
Running Quarterly ANI	7.63	9.45	13.86	11.87	13.76	12.69	9.13	6.19	7.51

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. 64, 65 and 66.

Group Size

Between April and June 2021, the group size of CWD sightings ranged from 1 to 7 dolphins. The average group size of CWDs was 2.86 dolphins per group, which is smaller than that of the last quarter (3.67 dolphins per group). The average group size of CWDs in this reporting quarter is also smaller than that of the same quarter of last year (4.3 dolphins per group).

In this reporting quarter, the numbers of CWD sightings with small group size (i.e. 1-2 dolphins) and medium group size (i.e. 3-9 dolphins) were identical. There were no CWD sightings with large group size (i.e. 10 or more dolphins) recorded in this reporting period.

There are no observable differences in the distribution pattern between small-sized and medium-sized dolphin groups as they all scattered amongst WL and SWL survey areas during the current reporting quarter. 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 28 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 April to June 2021, six sightings of CWDs were recorded with feeding activities. Amongst them, three sightings were observed associated with operating purse seiners.

The number of sightings with feeding recorded in the current reporting period is slightly lower than that in the previous reporting period (i.e. seven sightings involved feeding activities between January and March 2021). The number of CWD sightings with feeding activities in this reporting period is lower than that in the same quarter of last year (i.e. 11 sightings between April and June 2020).

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 April to June 2021, six sightings of CWDs were recorded with the presence of mother-and-unspotted juvenile pairs (no mother-and-unspotted calf pairs observed), which is fewer than that recorded in the previous reporting quarter (i.e. ten sightings between January and March 2021). The number of CWD sightings with the presence of mother-calf pairs is slightly lower than that recorded in the same quarter of last year (i.e. seven sightings between April and June 2020). These six sightings were recorded in WL and SWL.

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

Figure 2.8: Sighting Locations of Mother-calf Pairs

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

Photo Identification

Between April and June 2021, a total number of 37 different CWD individuals were identified altogether for 56 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 37 different CWD individuals, 13 animals (i.e. NLMM015, SLMM003, SLMM010, SLMM014, SLMM037, WLMM004, WLMM007, WLMM019, WLMM063, WLMM065, WLMM114, WLMM131 and WLMM164) were sighted for more than once.

Five individuals including SLMM003, SLMM010, SLMM037, WLMM007 and WLMM065 were re-sighted in different survey areas (i.e. WL and SWL) during this reporting period. The most frequently re-sighted individual in this reporting quarter is SLMM037 which has been encountered four times. The number of CWD individuals re-sighted more than once and the number of CWD individuals showing cross-area movement in the current reporting period are both lower than those of the previous reporting quarter from January to March 2021 (29 and 12 individuals respectively).

A summary of photo identification works is presented in Table 2.23. Representative photos of the 37 identified individuals and figures depicting the sighting locations of the aforementioned 13 re-sighted individuals recorded in this reporting period are presented Appendix C.

Table 2.23: Summary of Photo Identification

Individual ID	Date of sighting	Sighting Group No.	Area	Individual ID	Date of sighting	Sighting Group No.	Area
NLMM015	08-Jun-21	1	WL	WLMM007	12-Apr-21	4	WL
		2	WL		25-May-21	4	SWL
	15-Jun-21	1	WL	WLMM018	25-May-21	7	SWL
NLMM037	15-Jun-21	1	WL	WLMM019	08-Jun-21	1	WL
NLMM061	26-May-21	2	SWL			2	WL
NLMM063	08-Jun-21	2	WL	WLMM027	25-May-21	3	SWL
SLMM003	12-Apr-21	4	WL	WLMM028	12-Apr-21	2	WL
	25-May-21	6	SWL	WLMM029	12-Apr-21	2	WL
SLMM007	12-Apr-21	4	WL	WLMM039	12-Apr-21	4	WL
SLMM010	25-May-21	4	SWL	WLMM043	08-Jun-21	3	WL
	28-May-21	2	WL	WLMM061	11-May-21	1	WL
	08-Jun-21	4	WL	WLMM063	25-May-21	7	SWL
SLMM012	25-Jun-21	3	SWL		26-May-21	3	SWL
SLMM014	12-Apr-21	2	WL	WLMM065	26-May-21	2	SWL
		4	WL		08-Jun-21	3	WL
SLMM030	25-May-21	5	SWL	WLMM079	26-May-21	3	SWL
SLMM031	13-Apr-21	6	SWL	WLMM114	13-Apr-21	7	SWL
SLMM034	25-May-21	6	SWL		25-Jun-21	3	SWL
SLMM037	12-Apr-21	4	WL	WLMM131	13-Apr-21	6	SWL
	13-Apr-21	6	SWL			7	SWL
		7	SWL		25-Jun-21	1	SWL
	25-May-21	6	SWL	WLMM135	26-May-21	3	SWL
SLMM045	28-May-21	1	WL	WLMM156	08-Jun-21	1	WL
SLMM049	25-May-21	4	SWL	WLMM160	12-Apr-21	2	WL
SLMM052	25-May-21	6	SWL	WLMM164	08-Jun-21	1	WL
SLMM073	12-Apr-21	4	WL			2	WL
WLMM004	25-May-21	7	SWL		15-Jun-21	1	WL
	26-May-21	3	SWL	WLMM165	08-Jun-21	1	WL

2.5.2.2 Land-based Theodolite Tracking Survey

Survey Effort

Between April and June 2021, 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. In total, two CWD groups were tracked from the Lung Kwu Chau station while no CWD groups were tracked from the Sha Chau station, with an overall 0.06 CWD groups sighted per survey hour.

Information on survey effort and CWD groups sighted during land-based theodolite tracking surveys are presented in Table 2.24. Details on the survey effort and CWD groups tracked are presented in Appendix C. The first sighting locations of CWD groups tracked between April and June 2021 are shown in Figure 2.9.

Table 2.24: 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
April 2021
Lung Kwu Chau	1	06:00	2	0.33
Sha Chau	1	06:00	0	0
TOTAL	2	12:00	2	0.17
May 2021
Lung Kwu Chau	1	06:00	0	0
Sha Chau	1	06:00	0	0
TOTAL	2	12:00	0	0
June 2021
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	2	0.06

Figure 2.9:       Plots of First Sightings of All CWD Groups from Land-based Stations

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

2.5.2.3 Progress Update on PAM

PAM device has been deployed and positioned to the south of Sha Chau Island inside the SCLKCMP (Figure 2.10), 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 C-POD has been retrieved on 20 May 2021 for data collection and the F-POD was subsequently 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 each contractor in accordance with the Marine Mammal Watching Plan (MMWP). Teams of at least two dolphin observers were deployed at 1 to 6 dolphin observation stations by the contractors for continuous monitoring of the DEZ by all contractors for DCM works and seawall construction 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’ MMWP observation records and DEZ monitoring records, no dolphin or other marine mammals were observed within or around the silt curtains or 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 (i.e. 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 for June 2021 (see Appendix C), the daily average flow of 13,460 m³/day was well below the above- mentioned threshold (i.e. 53,395.2 m³/day). For the subsequent sets of sewage flow monitoring data for SPS-1, it will be presented in upcoming Quarterly and Annual EM&A Reports.

2.7 Environmental Site Inspection

Site inspections of the construction works were carried out on a weekly basis to monitor the implementation of proper environmental pollution control and mitigation measures for the Project. Bi-weekly site inspections were also conducted by the IEC. Besides, ad-hoc site inspections were 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. Different coloured labels were applied to PME being used at different period during restricted hours. Contractor’s frontline staff could easily identify the types of PME that can be used at a specific period. 

2. Construction equipment with valid QPME label was used at the construction site. This practice demonstrated that contractors’ equipment was notably quieter, more environmentally friendly and efficient.

3. Impervious liners were used for the prevention of potential leachate seepage from treated marine sediment storage area.

Use of labels with different colours for PME operating at different period during restricted hours	Use of construction equipment with valid QPME Label	Use of impervious liners for the prevention of potential leachate seepage of marine sediment

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 2.25. For trees which were managed under the Project during the reporting period, relevant measures have been implemented by Contracts 3302, 3503, 3508, 3602 and 3801. Contract 3802 would begin to undertake tree management measures subject to the handover of site area. Those trees which were within the Project boundary yet to be taken care by existing 3RS Contractors during the reporting period were managed by AAHK. The total number of retained trees, transplanted trees and to-be-transplanted trees under the management of Project are summarized in Table 2.26.

The total number of retained trees of the Project as of June 2021 was 98. Compared to 140 retained trees reported in the previous reporting period, the change in number was due to the following reasons:

· A works area with 4 nos. of trees were handed over from Contract 3801 to Contract 3508 (-0 nos);

· Contract 3801 reviewed their initial tree survey areas and confirmed that some of the survey areas were not to be their works areas. Therefore, trees located in those areas were removed from the retained tree list under the Project (-41 nos); and

· A tree near Airport North Interchange under Contract 3801 was removed due to safety concern of Airport Express Line (AEL) operation (-1 no) in May 2021.

Table 2.25 lists the affected tree ID together with the reasons for change of retained tree status of the Project. 

A total of five trees under Contractor 3508 were transplanted to their corresponding receptor sites during the reporting period. Therefore, the cumulative total number of transplanted trees of the Project has been increased from 14 from previous reporting period to 19. The summary of transplanted trees is shown in Table 2.28. Photos of the transplanted trees are presented in Table 2.29 and the locations of newly transplanted trees during the reporting period are presented in Figure 2.13.

Table 2.25: 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.	3RS Project 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, 3503, 3508, 3602, 3801 3802 (To be implemented)
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.	3503, 3508 3801 3802 (To be implemented)
CM 10 – Land formation works shall be followed with advanced hydroseeding around taxiways and runways as soon as practical	To be implemented around taxiways and runways as soon as practicable.	To be implemented

Table 2.26: 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.)
		Establishment Period	Maintenance Period
3302	9	0	0	0
3503	19	6	3	0
3508^(1)	25	5	0	7
3602	2	0	0	0
3801	43	0	5 ^(2)	0
Sub-total	98	11	8	7
Provisional
Contract	Retain (nos.)	Transplanted (nos.)		To-be-transplanted (nos.)
3508^(1)	130	0		10
Sub-total	130	0		10
Grand Total	228	19		17

Note:

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

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

Table 2.27: Summary of the Tree Status Updated in the Reporting Period

Tree ID(s)	Contract	Previous Status (Mar 2021)	Current Status (June 2021)	Remarks	Impact to Retain Tree Number
CT1373, CT1375, CT1376, CT1378, CT1379, CT1384, CT1387, CT1388, CT1389, CT1390, CT1391, CT1392, CT1393, CT1394, CT1395, CT1396, CT1397, CT1399, CT1403, CT1404, CT1426, CT1427, CT1428, CT1429, CT1432, CT1433, CT1443, CT1448, CT1449, CT1450, CT1451, CT1515, CT1516, CT1517, CT1518, CT1519, CT1520, CT1521, CT1522, CT1523, CT1524	3801	Retain	Not within Project’s contract works area	41 nos. of trees were confirmed not located within Project’s contract works area.	-  41 nos.
CT1417	3801	Retain	Fell	1 no. of tree was removed due to safety concern of Airport Express Line (AEL) operation.	-  1 no.

Table 2.28: Summary of the Transplanted Trees Updated in the Reporting Period

Tree ID	Transplant Date	Management Stage	Management Agency	Remarks
CT276	3 May 2018	Establishment period 4 May 2018 – May 2019	Contract 3801	Next inspection will be conducted in February 2022. Photos of the last inspection in February 2021 can be referred to Table 7.7 of Monthly EM&A Report No. 62.
		Long Term Management period Jun 2019 – May 2028	Southern Landside Petrol Filling Station
CT1253	4 May 2018	Establishment period 5 May 2018 – May 2019	Contract 3801
		Long Term Management period Jun 2019 – May 2028	Southern Landside Petrol Filling Station
T835	22 Jan 2020	Establishment period 23 Jan 2020 – Jan 2021	Contract 3503	Next inspection will be conducted in February 2022. Photos of the last inspection in February 2021 can be referred to Table 7.7 of Monthly EM&A Report No. 62.
		Long Term Management period Feb 2021 – Jan 2030
T836	13 Dec 2019	Establishment period 14 Dec 2020 – Jan 2021
		Long Term Management period Feb 2021 – Jan 2030
T838	22 Jan 2020	Establishment period 23 Jan 2020 – Jan 2021
		Long Term Management period Feb 2021 – Jan 2030
T812	21 Dec 2020	Establishment period 22 Dec 2020 – Dec 2021	Contract 3503	Next inspection will be conducted in August 2021. Photos of the last inspection in June 2021 were shown in Table 2.29.
T814	20 Dec 2020	Establishment period 21 Dec 2020 – Dec 2021
T815	15 Dec 2020	Establishment period 16 Dec 2020 – Dec 2021
T829	18 Dec 2020	Establishment period 19 Dec 2020 – Dec 2021
T830	14 Dec 2020	Establishment period 15 Dec 2020 – Dec 2021
T831	19 Dec 2020	Establishment period 20 Dec 2020 – Dec 2021
T1498	29 Jun 2021	Establishment period 30 Jun 2021 – Jul 2022	Contract 3508	Next inspection will be conducted in July 2021. Photos of the last inspection in June 2021 were shown in Table 2.29.
T1499	29 Jun 2021	Establishment period 30 Jun 2021 – Jul 2022
T1500	30 Jun 2021	Establishment period 1 Jul 2021 – Jul 2022
T1501	30 Jun 2021	Establishment period 1 Jul 2021 – Jul 2022
T1504	24 Jun 2021	Establishment period 25 Jun 2021 – Jul 2022
CT1194	4 May 2018	Establishment period 5 May 2018 – May 2019	Contract 3801	NA
		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	Establishment period 4 May 2018 – May 2019	Contract 3801	NA
		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	Establishment period 4 May 2018 – May 2019	Contract 3801	NA
		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 2.29: Photos of the Existing Transplanted Trees in the Reporting Period

Under 12-month Establishment Period:
T812	T814	T815
T829	T830	T831
Newly Transplanted Trees during the Reporting Period
T1498	T1499		T1500
T1501	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 2 and 3, which fell within the maximum daily cap number of 125.

As updated by CLP Power, the construction works of the Hong Kong Offshore LNG Terminal Project may affect the route diversion operation of the SkyPier HSFs from Q3 to Q4 2021. The captains were informed on the issue and ET will continue to closely monitor the implementation of the SkyPier Plan in the period.

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 4 skipper training workshops were held by ET during the reporting period and 39 concerned captains of construction vessels associated with the 3RS contracts were trained to familiarise them with the predefined routes, general education on local cetaceans, guidelines for avoiding adverse water quality impact, the required environmental practices / measures while operating construction and associated vessels under the Project, and guidelines for operating vessels safely in the presence of CWDs. Another 13 skipper training workshops were held with 24 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

Five environmental complaints were received in the reporting period. All environmental complaints were attended to and investigation was conducted by the ET in accordance with the Manual and the Complaint Management Plan. The summary of the complaints and analysis is presented in Table 3.1.

Table 3.1: Summary of Environmental Complaints

Date of Complaint Received	Details	Analysis/ Remedial Actions	Status
20 Apr 2021	A complaint regarding alleged dusty and muddy vehicles from Three Runway System Project at Tuen Mun Public Cargo Working Area was received on 20 April 2021.	For the complaint received on 20 April 2021 regarding alleged dusty and muddy vehicles from 3RS Project at Tuen Mun Public Cargo Working Area (TMPCWA), the case was investigated by ET in accordance with the Manual and the Complaint Management Plan of the Project. The ET requested the related 3RS contractors to provide more information regarding the complaint. According to the information provided by the contractors, the ET identified the relevant contractor and noted the alleged vehicle was a cement truck transported by RoRo barge service running between the 3RS reclaimed land and TMPCWA.  Based on ET’s regular site inspections on this contract in April 2021, it was observed that the contractor had conducted wheel washing on vehicles prior to leaving the works area. An ad hoc inspection at TMPCWA was arranged after receiving the complaint. While no RoRo barge was observed at TMPCWA during the inspection, soil and sand were observed on the road surface. Another ad hoc inspection at North Eastern Quay on 3RS reclaimed land, the location of the said RoRo barge service, was conducted in early May 2021 where dusty surfaces at the quay area was observed. The ET reminded the quay-managing contractor to provide adequate water spraying at the quay area. Having said that, it was noted that all air quality monitoring results of the Project in April 2021 were within the corresponding Action and Limit Levels at all monitoring stations. To follow up, individual contractors were reminded to properly wash the wheels of outgoing trucks from their respective construction sites. In the short term, a section of haul road connected to the quay would be paved to reduce fugitive dust generation and manual wheel washing would be implemented continuously. In the long term, an enhanced wheel washing measure is planned at both the North Eastern and Western Quay on the 3RS reclaimed land. ET and IEC would continue to monitor the wheel washing performance of all the contractors during the environmental site inspections. The complaint case was considered closed.	Closed
14 May 2021	A complaint regarding dust issue was received on 14 May 2021.	For the complaint received on 14 May 2021 regarding dust issue at 3RS construction site area, the case was investigated by ET in accordance with the Manual and the Complaint Management Plan of the Project. The anonymous complainant provided photos and did not provide any details on the complaint such as time and location of the observation. The ET recognized the concerned area and identified one related 3RS contractor and requested the contractor to provide information regarding the complaint. The contractor replied they had enhanced dust suppression measures by installing 360-degree water sprinklers. They also provided water spraying record of May and their dust control management plan. After receiving the complaint, a joint inspection by ET, IEC and AAHK was arranged, in which sprinklers and water trucks were both observed operating, and the installation of more sprinklers was underway at the concerned area. Nonetheless, ET reminded the contractor to enhance dust mitigation measures at the concerned area and review the dust control management plan regularly. Proper dust mitigation measures were observed during another joint inspection by ET, AAHK and EPD in late May 2021. In parallel, ET checked the daytime wind speed for 12 May 2021 at Chek Lap Kok wind station of Hong Kong Observatory. It was noted that the wind speed reached 26-27km/hr for several periods of time which might suggest the presence of sudden gust at the concerned area. Moreover, all air quality monitoring results of the Project in May 2021 were within the corresponding Action and Limit Levels at all monitoring stations. In view of the information mentioned above, the dust generation might be caused by sudden gust. Having said that, ET reminded the contractor to regularly review and update their dust control management plan and continue implementing dust mitigation measures according to the plan. ET and IEC would continue to monitor the related contractor’s dust mitigation measures during the environmental site inspections. Hence, the complaint case was considered closed.	Closed
21 June 2021	A complaint regarding sand material blown from stockpiling area of 3RS project was received on 21 June 2021.	For the complaint received on 21 June 2021 regarding sand material being blown from stockpiling area at 3RS construction site area, the case was investigated by ET in accordance with the Manual and the Complaint Management Plan of the Project. The ET recognised the concerned area and identified four related contractors and requested them to provide information regarding the complaint. Based on the information provided by the contractors, the stockpiling areas are used for loading, unloading and storage of excavated materials and site materials. The contractors replied that they have conducted dust suppression measures including regular water spraying on materials during loading and unloading and regular compaction on stockpile for prolonged storage. A joint ad-hoc inspection by EPD, ET, IEC and AAHK at the concerned area was conducted after receiving the complaint and no observation related to dust issue was recorded. ET conducted subsequent site inspections and observed that their inactive and idle stockpiles had been covered and further enhanced their water spraying actions on the active stockpiles. It is noted that all air quality monitoring results were within the corresponding Action and Limit Levels. Nevertheless, ET reminded the contractors to continue their mitigation measures on dust control on stockpiles and review the dust suppression plan regularly. Hence, the complaint case was considered closed.	Closed
21 June 2021	A complaint regarding dust issue at the eastern quay of the Project was received on 21 June 2021.	For the complaint received on 21 June 2021 regarding dust issue at the eastern quay of the Project, the case was investigated by ET in accordance with the Manual and the Complaint Management Plan of the Project. The ET recognised the concerned areas and three identified related contractors and requested them to provide information regarding the complaint.   Based on the information provided by the contractors, water trucks were assigned to carry out regular water spraying along the concerned areas according to their dust control management plan and provided their water spraying record for June and July 2021. Based on the ET’s weekly site inspections and ad-hoc inspection, no observation related to dust issue was recorded. A joint inspection by EPD, ET, IEC and AAHK was arranged after receiving the complaint, in which the contractor was reminded to provide and maintain adequate dust mitigation measures for haul roads in site areas and review the effectiveness of dust control measures regularly. ET also observed another contractor was conducting water spraying at concerned area during ET’s site inspection. Nevertheless, all contractors were reminded to continue implementing water spraying properly and adequately at their work areas. ET and IEC would continue to monitor contractors' dust suppression measures during environmental site inspections and the implementation of these measures at the concerned area. Hence, the complaint case was considered closed.
28 June 2021	A complaint regarding muddy water from the Project was received on 28 June 2021.	For the complaint received on 28 June 2021 regarding muddy water from the Project, the case was investigated by ET in accordance with the Manual and the Complaint Management Plan of the Project. The ET recognised the concerned area and identified five related contractors and requested them to provide information regarding the complaint.  Based on the information provided by the contractors, no illegal discharge along the alleged area during 21 to 25 June 2021 was reported. The temporary drainage system from one of the related contractors was operating properly for water storage, reuse and recycling onsite; and the sedimentation tanks from another contractor was installed on-site and confirmed their wastewater would be treated before discharge.  Based on the ET’s weekly site inspections, no illegal discharge was identified in the checklists. Both the temporary drainage system and sedimentation tanks were observed operating properly during the regular site inspections in June. No wastewater discharge was observed at the alleged area during IEC’s ad-hoc site inspection in late June. A joint inspection by EPD, ET, IEC and AAHK was also arranged after receiving the complaint. For the licensed discharge point near the alleged area, no discharge of muddy water was observed. No observation indicating any illegal discharge of muddy water from the vessels and pipes in accordance with the provided photo. Furthermore, the Hong Kong Observatory issued four Amber Rainstorm Warning Signals on 22, 23 and 24 June which might suggest the heavy rainfall might resulting in surface runoff at the alleged area. As such, ET would remind the contractors to pay attention on the possibility of surface run off, especially during rainy season and carry out further improvement on current measures if needed. ET and IEC would continue to monitor 3RS water quality and conduct site inspections to check contractors’ environmental practice and compliances. Hence, the complaint case was considered closed.

3.2.2 Notifications of Summons or Status of Prosecution

No 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	0
	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	5	0	0
From 28 December 2015 to end of the reporting period	0	39	1	1

4 Conclusion and Recommendation

In this quarterly period from 1 April 2021 to 30 June 2021, the EM&A programme has been implemented as planned, including 96 sets of air quality measurements, 50 sets of construction noise measurements, 39 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 DCM works, marine filling, seawall and facilities construction, together with runway and associated works. Land-based works on existing airport island involved mainly airfield works, foundation and substructure work for Terminal 2 expansion, modification and tunnel work for APM and BHS, and preparation work for utilities, with activities include site establishment, site office construction, road and drainage works, cable ducting, demolition, piling, and excavation works.

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

One monitoring result of construction noise triggered the Limit Level in the reporting period, and the corresponding investigation was conducted as stipulated in the EM&A programme. The investigation findings concluded that the case was not due to the Project.

All site observations made by the ET were recorded in the site inspection checklists and passed to the contractor together with the recommended follow-up actions.

For water quality, the water quality monitoring results for all parameters, except DO and SS, 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 and SS, some testing results triggered the relevant Action or 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 in the reporting period did not introduce adverse impact to all water quality sensitive receivers.

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 in 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. 4 skipper training workshops were held by ET and 13 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, dolphin observers were deployed by the contractors for laying of silt curtains for marine filling works in accordance with the plan. On the implementation of DEZ Plan, dolphin observers were deployed for continuous monitoring of the DEZ by the contractors for DCM works and seawall construction works in accordance with the DEZ Plan. Trainings for the proposed dolphin observers were provided by the ET prior to the aforementioned works. From the contractors’ MMWP observation records and DEZ monitoring records, no dolphin or other marine mammals were observed within or around the silt curtains or the DEZ in this reporting period. Audits of acoustic decoupling for construction vessels were also carried out by the ET.

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.

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