Acronyms	Description
C&D	Construction and Demolition
CAP	Contamination Assessment Plan
CEDD	Civil Engineering and Development Department
CWD	Chinese White Dolphin
DCM	Deep Cement Mixing
DO	Dissolved Oxygen
EIA	Environmental Impact Assessment
EIAO	Environmental Impact Assessment Ordinance
EIS	Ecologically Important Stream
EM&A	Environmental Monitoring and Audit
EP	Environmental Permit
EPD	Environmental Protection Department
ER	Engineer's Representative
ERM	ERM-Hong Kong, Limited
ET	Environmental Team
HVS	High Volume Sampler
IEC	Independent Environmental Checker
PDA	Planned Development Area
PME	Powered Mechanical Equipment
QPME	Quality Powered Mechanical Equipment
RAP	Remediation Action Plan
RR	Remediation Report
RTTM	Real Time Tracking and Monitoring
SS	Suspended Solid
TCB	Tung Chung Bay
TCE	Tung Chung East
TCNTE	Tung Chung New Town Extension
TCW	Tung Chung West
The Project	Tung Chung New Town Extension (East)
THW	Tai Ho Wan
TSP	Total Suspended Particulate
TUE	Tung Chung Line Extension
Updated EM&A Manual	Updated Environmental Monitoring and Audit Manual for Tung Chung New Town Extension prepared by ERM under Agreement No. CE 60/2017 (EP) and deposited to EPD under Environmental Permit No. EP-519/2016

1. introduction

1.1 background

Tung Chung New Town Extension (TCNTE) is one of the major initiatives under the Government's multi-pronged approach to increase land supply to meet Hong Kong's medium- to long-term needs for housing, economic and social developments. The Environmental Impact Assessment (EIA) Report for TCNTE (Register No. AEIAR-196/2016) was approved on 8 April 2016 and the Environmental Permit (EP) No. EP-519/2016, covering the construction and operation of TCNTE, was granted on 9 August 2016. The EIA Report and EP cover both Tung Chung East (TCE) and Tung Chung West (TCW).

ERM-Hong Kong, Limited (ERM) is commissioned to undertake the role of Environmental Team (ET) for the construction and operation of TCE Project (“the Project”) in accordance with the requirements specified in the EP, Updated Environmental Monitoring and Audit (EM&A) Manual ^([1]), EIA Report of the TCNTE project ^([2]) and other relevant statutory requirements.

The TCNTE comprises the following elements:

(a) TCE Project

1. Reclamation of the seabed by a non-dredged method at TCE to form a total of about 130 hectares of land;

2. Construction of about 4.9 kilometers of seawalls, with an eco-shoreline, three drainage box culvert outfalls, three circulation drains and a seawater intake at TCE;

3. Provision of infrastructure for Tung Chung Area 58, including construction of a single two-lane road with a footpath and the associated utility works;

4. Construction of proposed open space;

5. Construction of roads, footpaths, cycle tracks and the associated junction / road improvement works;

6. Engineering infrastructure works covering drainage, sewerage, waterworks (including a fresh water service reservoir, a salt water service reservoir and a salt water pumping station), common utility tunnels and landscaping works; and

7. Implementation of environmental mitigation measures and environmental monitoring and audit programme for the works.

(b) TCW Project

1. Site formation works at TCW;

2. Construction of proposed open space;

3. Construction of the River Park including a visitor centre at TCW; and

4. Construction of sustainable urban drainage systems at TCW.

The locations of Contracts 1, 2, 3 and 7 are shown in Figure 1.1 to 1.4. The construction and the reclamation related marine works of Contract 1 commenced on 9 and 13 July 2018, respectively and was completed on 8 September 2025. The construction of Contracts 2, 3 and 7 commenced on 4 September 2021, 5 November 2021 and 15 March 2022, respectively.

1.2 SCOPE OF THE EM&A REPORT

This is the Monthly EM&A Report for the TCE Project which summarises the key findings of the EM&A programme during the reporting period from 1 to 31 July 2026 for the construction works.

1.3 ORGANIZATION STRUCTURE

The organization structure of the Project is shown in Annex A. The key personnel contact names and contact details are summarized in Table 1.1 below.

Table 1.1 Contact Information of Key Personnel

Party	Position	Name	Telephone
Environmental Team (ET) (ERM-Hong Kong, Limited)	ET Leader	Kelvin So	3894 9504
Environmental Team (ET) (ERM-Hong Kong, Limited)	Deputy ET Leader	Raymond Chow	2271 3281
Independent Environmental Checker (IEC) (Binnies Hong Kong Limited)	IEC	Manuel Chua	3894 9807
	Deputy IEC	Edward Lau	3894 9695
Contract No. NL/2020/02 - Tung Chung New Town Extension – Salt Water Supply System (Contract 2)
Civil Engineering and Development Department	Senior Engineer	Patrick C Y Yeung	2231 4435
Civil Engineering and Development Department	Electrical & Mechanical Engineer	Miki S Y Chung	3894 9524
Engineer’s Representative (ER) (AECOM Asia Company Limited)	Principal Resident Engineer	Frankie Fan	3894 9603
	Senior Resident Engineer	Sunny Ng	3894 9605
	Senior Resident Engineer	Vincent Leung	3894 9645
	Resident Engineer	Amen Fung	3894 9676
	Senior Inspector of Works	Lai Kwok Wai	3894 9731
Contractor (China Geo-Engineering Corporation)	Construction Manager	Ambrose Kwong	6198 7787
	Site Agent	Patrick Lam	9227 9872
	Construction Team Leader	Edward Mok	6498 4306
	Environmental Officer	Fung Ka Bao	9120 1489
	24-hour Complaint Hotline	-	5976 1853
Contract No. NL/2020/03 - Tung Chung New Town Extension – Major Infrastructure Works in Tung Chung East (Contract 3)
Civil Engineering and Development Department	Senior Engineer	Phoebe Tang	2231 4423
	Senior Engineer	Colin K C Wong	2231 4417
	Engineer	Timothy H M Chan	2231 4473
	Engineer	Wing Chen	3894 9704
Engineer’s Representative (ER) (AECOM Asia Company Limited)	Principal Resident Engineer	Frankie Fan	3894 9603
	Chief Resident Engineer	Gloria Tang	3894 9639
	Senior Resident Engineer	Winston Wong	3894 9650
	Resident Engineer	Marcus Choi	3894 9649
	Resident Engineer	Anson Yip	3894 9559
	Senior Inspector of Works	Douglas Ng	3894 9737
Contractor (Build King Civil Engineering Limited)	Construction Manager	Paul Lui	9095 7922
	Senior Site Agent	Aldous Lo	9225 0368
	Site Agent	Kwong Po Hang	9283 6844
	Construction Team Leader	Qiu Da	5938 8793
	Environmental Officer	Tim Lin	6390 0018
	24-hour Complaint Hotline	-	5976 1853
Contract No. NL/2020/07 - Tung Chung New Town Extension – Tai Ho Interchange (Contract 7)
Civil Engineering and Development Department	Senior Engineer	Phoebe Tang	2231 4423
Civil Engineering and Development Department	Engineer	S H Leung	2231 4449
Engineer’s Representative (ER) (AECOM Asia Company Limited)	Principal Resident Engineer	Frankie Fan	3894 9603
	Senior Resident Engineer	Kelvin Kwan	3894 9641
	Resident Engineer	Kingsley Ho	3894 9552
	Resident Engineer	Jessie Tang	3894 9678
	Senior Inspector of Works	C K Liu	3894 9733
Contractor (Build King Civil Engineering Limited)	Site Agent	Vincent Kwan	9833 1313
	Deputy Site Agent	Andy Chung	9878 0870
	Construction Team Leader	Vincent Lo	9883 9229
	Environmental Officer	Nash Wong	9810 1946
	24-hour Complaint Hotline	-	5976 1853

1.4 SUMMARY OF CONSTRUCTION WORKS

As informed by the Contractor, details of the major works carried out in this reporting period are listed below:

Table 1.2 Major Activities in the Reporting Period

Activities	Key Issues	Key Mitigation Measures
Contract No. NL/2020/02 - Tung Chung New Town Extension – Salt Water Supply System (Contract 2)
Land-based Works
· Construction of fence wall for pumping station at Portion 6 · Slope works, road and drain works for SWSR at Portion 3 · Remedial and Outstanding Works of SWSR at Portion 3 · Overall CCTV survey on new laid watermain	· Dust emission · Handling and storage of C&D materials generated from construction activities · Noise from plant operation · Emission of dark smoke from PMEs · Efficiency of wastewater and drainage management · Tree protection	· Good site practices · Regular water spraying on stockpiles, unpaved haul road and land filling area · Provide tarpaulin sheets coverage on stockpiles · Sorting and reuse of C&D materials as far as practicable · Use of QPME and noise barrier/acoustic mat · Regular maintenance of PMEs · Implementation of wastewater and drainage management · Retain and protect all existing trees and vegetation within the study area which are not directly affected by the works
Contract No. NL/2020/03 - Tung Chung New Town Extension – Major Infrastructure Works in Tung Chung East (Contract 3)
Land-based Works
· Excavation and ELS works at Portion 104 · Excavation and ELS works at CUT no.1, 2, 3, 4 and supporting building · Construction works for CUT no. 1 and 3 structure · UU laying works in CUT 1,2,3 · Back-filling works for CUT 2 · Construction works and furniture installation of PM office at WA9 · Construction works of Contractor office at WA6 · Drainage, Sewerage and watermain works at Road L5, L7, L8, L9, D4 and D5 and Portion 16 · DCS works at Road L5, D4 and L7. · Pipe laying works for twin rising mains/ watermain laying at Man Tung Road · Preparation and pipe jacking works at Ying Tung Road · Pipe jacking works at Yi Tung Road · Backfilling works for noise barrier at Portion 11 · Road and drainage works in Road P1 · Road works in Road L3, L4 and L5 · Road widening works at Ying Hei Road · ELS for SIBC construction · Construction for BC3 at Portion 22B · Pipe pile installation at underpass D1	· Dust emission · Handling and storage of C&D materials generated from construction activities · Noise from plant operation · Emission of dark smoke from PMEs · Efficiency of wastewater and drainage management	· Good site practices · Regular water spraying on stockpiles, unpaved haul road and land filling area · Provide tarpaulin sheets coverage on stockpiles · Sorting and reuse of C&D materials as far as practicable · Use of QPME and noise barrier/acoustic mat · Regular maintenance of PMEs · Implementation of wastewater and drainage management
Contract No. NL/2020/07 - Tung Chung New Town Extension – Tai Ho Interchange (Contract 7)
Land-based Works
· Final pressure test for rising mains at Portion 146-1 to 146-11 · Road and Drainage works at SR-A1 to A5 at Portion 31 · Drainages works at Portion 146-3 · Smart lamp poles ducting laying and footings at Road P1 footpath at 146-3, 146-6, 146-7 and 146-11 · Formation for Road P1 footpath and cycle track at 146-1, 146-3, 146-6, 146-7, and 146-11 · Irrigation pipes at P1 road · Smart Lamp poles at P1 road · Backfilling soil mix at P1 road dwarf wall · Pak Mong Bridge insitu deck and furniture · Roads reinstatement at Portion 32 Depot section · RC works and drainage works at SR6 eastbound near Wall D · Parapet Transition construction at RW-R7, A1 and A2 · Parapet construction RW-R5 and Wall D Bay · Road works at Bridge C and Approaching Box Structures · Earthworks casting yard A2 · Asphalt paving, kerbs and concrete profile barriers installation for Road P1 at 146-1, 146-3 · Site clearance within site boundary	· Dust emission · Handling and storage of C&D materials generated from construction activities · Noise from plant operation · Emission of dark smoke from PMEs · Efficiency of wastewater and drainage management · Tree protection	· Good site practices · Regular water spraying on stockpiles, unpaved haul road and land filling area · Provide tarpaulin sheets coverage on stockpiles · Sorting and reuse of C&D materials as far as practicable · Use of QPME and noise barrier/acoustic mat · Regular maintenance of PMEs · Implementation of wastewater and drainage management · Retain and protect all existing trees and vegetation within the study area which are not directly affected by the works

The environmental mitigation implementation schedule is presented in Annex B.

1.5 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 the Environmental Aspects under the Updated EM&A Manual

Parameters	Status
Air Quality
Baseline Monitoring	The results of baseline air quality monitoring for TCE were reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4
Impact Monitoring	On-going for TCE, monitoring conducted three times every six days
Noise
Baseline Monitoring	The results of baseline noise monitoring for TCE were reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4
Impact Monitoring	On-going for TCE, monitoring conducted once per week
Impact Monitoring for Road Traffic Noise during Operational Phase	To be conducted during operational phase
Fixed Noise Commissioning Test	Under implementation by the Contractor of Contract 3
Water Quality
Baseline Monitoring	The results of baseline water quality monitoring for TCE were reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4
Impact Monitoring	Suspended for TCE with approval from EPD
Waste Management
Waste Monitoring	On-going
Land Contamination
Contamination Assessment Plan (CAP), Remediation Action Plan (RAP) and Remediation Report (RR)	To be conducted under TCW. Refer to the EM&A Reports of TCW.
Ecology
Monitoring for Compensation Woodland	Compensation Woodland Planting was completed on 30 September 2022. On-going, monitoring conducted quarterly. The handover for woodland compensation from Contact No. NL/2020/C2 to Contract No. NL/2020/03 was conducted on 12 June 2025. Quarterly post-planting monitoring report was submitted to EPD on 8 May 2026.
Monitoring for Emergent Plant inside the future River Park	To be conducted under TCW. Refer to the EM&A Reports of TCW.
Monitoring for Translocated Amphibians of Conservation Importance	To be conducted under TCW. Refer to the EM&A Reports of TCW.
Monitoring for Preserved/Transplanted Plant Species of Conservation Importance	On-going, for preserved plant species, monitoring conducted once per month; for transplanted plant species, replacement planting was carried out on 28 April 2023 and 19 September 2023. Monitoring conducted once per month for the first year, and quarterly from second year onwards until land handover
Monitoring for Tung Chung Stream EIS and Wong Lung Hang EIS	To be conducted under TCW. Refer to the EM&A Reports of TCW. Monitoring for Wong Lung Hang was not required and the proposal was accepted by EPD on 2 September 2021
Eco-shoreline Monitoring	Third year wet season monitoring was conducted on 6, 15 and 16 July 2026. The third year dry season monitoring report was submitted to AFCD and EPD on 3 June 2026.
Tung Chung Bay and Tai Ho Wan Baseline Monitoring	The results of baseline soft shore ecological monitoring at Tung Chung Bay and Tai Ho Wan were reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4
Tung Chung Bay and Tai Ho Wan Impact Monitoring	Completed
Tung Chung Bay and Tai Ho Wan Post-construction Monitoring	Completed
Landscape and Visual
Baseline Monitoring	The results of baseline landscape and visual monitoring were reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4
Impact Monitoring	On-going
Site Environmental Audit
Regular Site Inspection	On-going
Dolphin Watching Plan implementation measures	Completed
Works Vessel Travel Route Plan implementation measures	Completed
Silt Curtain Deployment Plan implementation measures	All silt curtain was removed in accordance with the Silt Curtain Deployment Plan and after obtaining the acceptance from EPD
Spill Response Plan implementation measures	Completed
Detailed Preservation and/or Translocation Plan for Plant Species of Conservation Importance implementation measures	Under implementation by the Contractor of Contract 2
Detailed Compensatory Woodland Planting Plan implementation measures	Under implementation by the Contractor of Contract 3
Waste Management Plan implementation measures	Under implementation by the Contractor of Contract 2, 3 and 7
Complaint Hotline and Email Channel	Under implementation by the Contractor of Contract 2, 3 and 7
Environmental Log Book	On-going

Taking into account the construction works, impact monitoring of air quality, noise and waste management were carried out in the reporting period. The monitoring schedule of air quality and noise are provided in Annex E2 and Annex F2 respectively.

The EM&A programme also involved environmental site inspections and related auditing conducted by the ET for checking the implementation of the required environmental mitigation measures recommended in the approved EIA Report and relevant EP submissions, including Complaint Management Plan, Detailed Preservation and/or Translocation Plan for Plant Species of Conservation Importance, and Waste Management Plan.

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 summarized as below:

• Three (3) environmental management committee meetings were held among the relevant contractors, ER, ET, IEC and CEDD on 15 July 2026 (for Contract 2), 22 July 2026 (for Contract 3) and 14 July 2026 (for Contract 7);

• Environmental toolbox trainings on removal of stagnant water and preventation of mosquito breeding, waste collection, handling and disposal on 7 and 21 July 2026 were conducted for Contract 2;

• Environmental toolbox trainings on construction dust and suppression, construction noise and suppression, wastewater handling, discharge and treatment facilities, waste collection, handling and disposal, site plant and machinery (operation and maintenance), maintenance of site access, site boundary and haul roads, handling and storage of chemical, anti-mosquito control measures, chemical waste and handling of chemical spillage on 2, 7, 9, 14, 16, 21, 23, 28 and 30 July 2026 were conducted for Contract 3;

• Environmental toolbox trainings on loading, unloading and transfer of materials, stockpiling, backfilling, deposition and compaction of fill material, scaffolding on 8, 15, 22 and 29 July 2026 were conducted for Contract 7.

1.6 STATUS OF STATUTORY ENVIRONMENTAL COMPLIANCE WITH THE ENVIRONMENTAL PERMIT

The status of statutory environmental compliance with the EP conditions under the EIAO, submission status under the EP and implementation status of mitigation measures are presented in Annex C.

1.7 STATUS OF OTHER STATUTORY ENVIRONMENTAL REQUIREMENTS

The environmental licenses and permits, including environmental permit, discharge license under Water Pollution Control Ordinance, registration as chemical waste producer, construction noise permit and specified processes license, which were valid in the reporting period are presented in Annex D. No non-compliance with environmental statutory requirements was recorded.

2. EM&A RESULTS FOR TUNG CHUNG EAST

The works area in Area 113 has been handed over to MTRC since 24 March 2025. The corresponding environmental monitoring, site inspection, environmental complaint handling and EM&A reporting in the above-mentioned works area will be covered by EM&A programme of TUE and carried out by existing ET and IEC of TUE.

2.1 Air Quality

2.1.1 Monitoring Requirements and Equipment

According to the Updated EM&A Manual of the Project, impact air quality monitoring in terms of 1-hour Total Suspended Particulate (TSP) was conducted three (3) times every six (6) days when the highest dust impact was expected. The Action and Limit Levels of the air quality monitoring is provided in Table 2.1 below.

Table 2.1 Action and Limit Levels for 1-hour TSP

Location	Action Level (µg/m³)	Limit Level (µg/m³)
Monitoring station for Tung Chung East	279	500

Portable direct reading dust meters were used to measure 1-hour TSP levels in undertaking the air quality monitoring for the Project. The proposed use of portable direct reading dust meters was submitted to IEC and obtained agreement from the IEC as stated in Section 5.5 of the Updated EM&A Manual. With the use of direct reading dust meter, it can allow prompt and direct results for the EM&A reporting and the implementation of the event and action plan. The portable direct reading dust meter would be calibrated every year against High Volume Sampler (HVS) to check the validity and accuracy of the results measured by direct reading method.

The monitoring location and equipment used in the impact air quality monitoring programme are summarized in Table 2.2 and illustrated in Figure 2.1. Copies of the calibration certificates for the equipment are presented in Annex E1, which showed that the portable direct reading dust meter is capable of providing comparable results with that provided by a HVS.

Table 2.2 Air Quality Monitoring Details

Monitoring Station

Location

Parameter

Frequency and Duration

Monitoring Dates

Equipment

DM-1

Tung Chung Area 56 – Ying Tung Estate

1-hour TSP

Three times per six days during the construction period of the Project

3, 9, 15, 21, and 27 July 2026

1-hour TSP Dust Meter

SIBATA LD-5R (S/N: 781281)

Note: It should be noted that impact monitoring at other construction dust monitoring locations at TCE as stated in the Updated EM&A Manual will commence after the flat intake (for Monitoring Stations DM-2, DM-3 and DM-4).

2.1.2 Monitoring Schedule for the Reporting Month

The schedule for air quality monitoring during the reporting period is provided in Annex E2.

2.1.3 Results and Observations

The monitoring results for 1-hour TSP are summarized in Table 2.3. The monitoring data and the graphical presentation are provided in Annex E3.

Table 2.3 Summary of 1-hour TSP Monitoring Results in the Reporting Period

Monitoring Station	Average (µg/m³)	Range (µg/m³)	Action Level (µg/m³)	Limit Level (µg/m³)
DM-1	36	24-48	279	500

Major dust sources in the reporting period included haul road traffic and excavation under the Project and nearby construction sites.

No exceedance of Action and Limit Levels was recorded for construction air quality monitoring in the reporting period. No action was thus required to be undertaken in accordance with the Event and Action Plan presented in Annex E4.

2.2 Noise Monitoring

2.2.1 Monitoring Requirements and Equipment

According to the Updated EM&A Manual of the Project, impact noise monitoring was conducted once per week during the construction phase of the Project. The Action and Limit Level for construction noise of the Project is provided in Table 2.4 below.

Table 2.4 Action and Limit Levels for Construction Noise

Time Period	Action Level	Limit Level
0700 - 1900 hours on normal weekdays	When one documented complaint is received	75 dB(A) ^{a, b}

Note:

a Limit level is exceeded when Leq ≥ 75 dB(A). If works are to be carried out during restricted hours, the conditions stipulated in the construction noise permit issued by the Noise Control Authority have to be followed.

b Reduce to 70 dB (A) for schools and 65 dB (A) during school examination periods.

Noise monitoring was performed using sound level meter at the designated monitoring stations NMS-CA-1A ^([3])
([4]) and NMS-CA-4 (Figure 2.2; Table 2.5) in accordance with the requirements stipulated in the Updated EM&A Manual. Acoustic calibrator was deployed to check the sound level meters at a known sound pressure level. Details of the deployed equipment are provided in Table 2.5. Copies of the calibration certificates for the equipment are presented in Annex F1.

Table 2.5 Noise Monitoring Details

Monitoring Station ^a	Location	Parameter	Frequency and Duration	Monitoring Dates	Equipment
NMS-CA-1A ^b	Residential premise in Tung Chung East – Century Link/Ying Hong Road ^c	30-minute measurement between 0700 and 1900 on normal weekdays (Monday to Saturday). L_eq, L₁₀and L₉₀would be recorded.	Once per week for 30 mins during the construction period of the Project	3, 9, 15, 21, and 27 July 2026	Sound Level Meter: Rion NL-52 (S/N: 00175561) Acoustic Calibrator: LARSON DAVIS CAL200 (S/N: 11334)
NMS-CA-4	Residential premise in the reclamation area next to Tung Chung East – Ying Tung Estate

Monitoring Station ^a

Location

Parameter

Frequency and Duration

Monitoring Dates

Equipment

NMS-CA-1A ^b

Residential premise in Tung Chung East – Century Link/Ying Hong Road ^c

30-minute measurement between 0700 and 1900 on normal weekdays (Monday to Saturday). L_eq, L₁₀and L₉₀would be recorded.

Once per week for 30 mins during the construction period of the Project

3, 9, 15, 21, and 27 July 2026

Sound Level Meter: Rion NL-52 (S/N: 00175561)

Acoustic Calibrator: LARSON DAVIS CAL200 (S/N: 11334)

NMS-CA-4

Residential

premise in the

reclamation area next to Tung Chung East – Ying Tung Estate

Note:

a It should be noted that impact monitoring at other construction noise monitoring locations at TCE as stated in the Updated EM&A Manual will commence after the flat intake of residential premise in TCE (for Monitoring Station NMS-CA-1) and operation of schools (for Monitoring Stations NMS-CA-2 and NMS-CA-3).

b Impact monitoring at monitoring station NMS-CA-1A commenced on 19 September 2018 in view of the close vicinity of the construction works near the residential area at Century Link.

c Due to land handover issue, NMS-CA-1A was relocated to Ying Hong Road which is located 60m away from the original location. Proposal on the relocation of NMS-CA-1A was approved by IEC on 23 November 2018. Noise monitoring at the relocated location commenced since 24 November 2018.

2.2.2 Monitoring Schedule for the Reporting Month

The schedule for noise monitoring during the reporting period is provided in Annex F2.

2.2.3 Results and Observations

Results for noise monitoring are summarized in Table 2.6. The monitoring data and the graphical presentation are provided in Annex F3.

Table 2.6 Summary of Construction Noise Monitoring Results in the Reporting Period

Monitoring Station

Average, dB(A),
L_eq_(30mins)

Range, dB(A),

L_eq_(30mins)

Limit Level, dB(A),

L_eq_(30mins)

NMS-CA-1A

66.7

66.1-67.4

NMS-CA-4

67.7

67.0-68.9

Major noise sources during the noise monitoring included noise from plant operation, craning, haul road traffic, nearby traffic and aircraft as well as nearby construction sites.

2.3 WATER QUALITY Monitoring

No monitoring event for impact water quality monitoring was conducted at all designated monitoring stations during the reporting period. Water quality monitoring has been suspended since 3 October 2023 as all reclamation works and marine construction activities have been completed.

2.4 COMPENSATION WOODLAND MONITORING

Compensation woodland planting under Contract 2 was completed on 30 September 2022. With the approval from EPD on the monitoring proposal in August 2023, quarterly post-planting monitoring for compensation woodland was commenced in September 2023. Quarterly post-planting monitoring report was submitted to EPD on 8 May 2026. No quarterly post-planting monitoring for the compensation woodland was carried out in the reporting period⁽^{^[5]}⁾. Photographic record of the compensation woodland planting is provided in Annex G.

2.5 PRESERVED/TRANSPLANTED PLANT SPECIES OF CONSERVATION IMPORTANCE MONITORING

Plant species of conservation importance, including three individuals of Aquilaria sinensis and 33 individuals of Gmelina chinensis, were identified within works areas for Contract 2 during the survey conducted in August 2021. All individuals of Aquilaria sinensis and 31 individuals of Gmelina chinensis were recommended being preserved in-situ while two individuals of Gmelina chinensis (RT-07 and RT-08) were recommended being transplanted to the receptor site in accordance with the Detailed Preservation and/or Translocation Plan for Plant Species of Conservation Importance approved under Condition 2.21 of EP-519/2016.

Initial tree survey was conducted in September 2021 under Contract No. NL/2020/02 before the commencement of construction works. According to the initial tree survey conducted, the in-situ preserved plant species of conservation importance of which one individual of Aquilaria sinensis and six individuals of Gmelina chinensis were found missing.

During the monthly monitoring of the in-situ preserved plant species of conservation importance in November 2023, one individual of Aquilaria sinensis and one individual of Enkianthus quinqueflorus were newly observed and recommended being preserved in-situ. Registration and measurement for two additional trees were conducted on 4 December 2023.

2.5.1 Preserved Plant Species of Conservation Importance

Monthly monitoring of the in-situ preserved plant species of conservation importance by the Qualified Personnel (QP) appointed under Contract 2 was implemented in the reporting period. Health condition was considered fair for the majority of the in-situ preserved plant species of conservation importance, of which two individuals of Gmelina chinensis could not be monitored as a result of unsafe access to the locations, as recorded during the monitoring carried out on 29 July 2026.

Tree protection zones for the in-situ preserved plant species of conservation importance were demarcated. No injuries and/or damages to the individuals of the in-situ preserved plant species of conservation importance were reported by the QP since the previous monitoring events. Photographic record and tree schedule of the preserved plant species of conservation importance monitoring are provided in Annex H1.

The ET will continue to monitor the implementation of monitoring of in-situ preserved plant species of conservation importance.

2.5.2 Transplanted Plant Species of Conservation Importance

Site visit to the receptor site for the transplanted plant species of conservation importance under Contract 2 was carried out on 20 January 2022 prior to the commencement of transplantation works for the transplanted plant species of conservation importance on 21 January 2022.

The transplanted plant species of conservation importance were both certified as dead trees by the QP on 15 June 2022 as no living signs were observed. Replacement planting of new trees of the same species, or other species to the satisfaction of the Project Manager, at the Contractors’ expense would be deemed necessary in accordance with the conditions under the approved Detailed Preservation and/or Translocation Plan for Plant Species of Conservation Importance. Replacement planting of three (3) Aquilaria sinensis were completed on 28 April 2023. One (1) individual was certified dead by the QP as no living signs were observed on 26 July 2023. The removal of the dead tree and replanting of one (1) individual of Aquilaria sinensis were completed on 19 September 2023.

The establishment period of two (2) individuals of Aquilaria sinensis was ended on 27 April 2024 and one (1) individual of Aquilaria sinensis was ended on 18 September 2024.

Monitoring of the replacement planting will be conducted once per month for the first year, and quarterly from second year onwards until land handover. No quarterly monitoring of three (3) individuals of Aquilaria sinensis were scheduled during the reporting period.

ET will continue to monitor the implementation of monitoring of in-situ preserved/ transplanted plant species of conservation importance.

2.6 ECO-SHORELINE MONITORING

The construction of vertical eco-shoreline, mangrove eco-shoreline and rocky eco-shoreline has been substantially completed. Photographic record is provided in Annex I.

The third year dry season monitoring and annual report were submitted to AFCD and EPD on 3 June 2026.

Third year wet season monitoring of ichthyoplankton was conducted using plankton net on 6 July 2026 while monitoring of juvenile fish was conducted using purse seine on 15 and 16 July 2026. Monitoring is conducted for at least 3 years after the completion of eco-shoreline, twice in wet season and twice in dry season, while ichthyoplankton and juvenile fish monitoring will be conducted on a monthly basis covering May to August for at least 3 years, in order to determine the effectiveness of the eco-shoreline in accordance with the Updated EM&A Manual and Eco-shoreline Implementation Plan.

2.7 Soft Shore Ecological Monitoring

The post-construction soft shore ecological monitoring has been conducted for 2 years since the completion of construction. As no significant changes in density or the distribution pattern of horseshoe crab, seagrass and intertidal soft shore communities were observed throughout the construction and post-construction phase, the last round of the soft shore ecological monitoring was completed in September 2025.

2.8 EM&A SITE INSPECTION

Site inspections were carried out on a weekly basis with the Contractor and ER to monitor the implementation of proper environmental pollution control and mitigation measures for air quality, noise, water quality, waste management, landscape and visual impacts and preservation and/or transplantation of plant species of conservation importance under the Project. In the reporting period, five (5) site inspections were carried out on 2, 8, 15, 22 and 29 July 2026 for Contract 2, five (5) site inspections were carried out on 3, 10, 17, 22 and 31 July 2026 for Contract 3 and four (4) site inspections were carried out on 9, 14, 21 and 28 July 2026 for Contract 7.

Key observations during the site inspections are summarized in Table 2.7.

Table 2.7 Key Observations Identified during the Site Inspection in this Reporting Month

Contract No.	Inspection Date	Environmental Observations	Recommendations/ Remarks
Contract 2	2 July 2026	Portion 3 • Accumulated refuse was observed.	Portion 3 • The Contractor was reminded to remove the refuse in a timely manner and maintain good housekeeping.
	8 July 2026	Portion 3 • Mud was observed on public road.	Portion 3 • The Contractor was urged to clean up the mud and keep the public haul road clean.
	15 July 2026	Portion 3 • Excessive runoff was observed.	Portion 3 • The Contractor was urged to provide mitigation measures, rectify the situation immediately, critically review the drainage plan as to comply with discharge license and ensure no site runoff or discharge.
	22 and 29 July 2026	Portion 3, 6 • No deficiency was observed.	• Nil.
Contract 3	3 July 2026	Road P1 • Poor housekeeping was observed. CUT 3 • Appropriate Non-road Mobile Machinery (NRMM) label was not observed on generator.	Road P1 • The Contractor was reminded to remove general refuse and maintain good housekeeping. CUT 3 • The Contractor was reminded to affix appropriate NRMM label in accordance with the Air Pollution Control (Non-road Mobile Machinery) (Emission) Regulation.
	10 July 2026	Road P1, CUT 3 • Poor housekeeping was observed.	Road P1, CUT 3 • The Contractor was reminded to remove general refuse and maintain good housekeeping.
	17 July 2026	D5 • Oil stains were observed on ground.	D5 • The Contractor was urged to clean the oil stain and rectify the situation immediately.
	22 July 2026	Road P1, D5, SIBC • No deficiency was observed.	• Nil.
	31 July 2026	Road P1, D5 • No deficiency was observed.	• Nil.
Contract 7	9 July 2026	Portion 31 • Poor housekeeping was observed.	Portion 31 • The Contractor was reminded to maintain good housekeeping and remove refuse regularly.
	14 July 2026	Portion 30 • Oil drum was observed placing on ground.	Portion 30 • The Contractor was reminded to provide drip trays for oil drums.
	21 July 2026	Portion 31 • Appropriate Non-road Mobile Machinery (NRMM) labels were not observed on excavator. Portion 146 • Oil stain was observed on ground.	Portion 31 • The Contractor was reminded to affix appropriate NRMM labels in accordance with the Air Pollution Control (Non-road Mobile Machinery) (Emission) Regulation. Portion 146 • The Contractor was urged to clean the oil stain and rectify the situation immediately.
	28 July 2026	Portion 34, 146 • No deficiency was observed.	• Nil.

The Contractors have rectified all of the observations identified during environmental site inspections in the reporting period. The Contractors were reminded to implement all relevant mitigation measures related to construction dust, construction noise, water quality and waste management outlined in the EIA Report and Updated EM&A Manual.

2.9 Waste Management Status

The Contractors of Contract 2, 3 and 7 have registered as chemical waste producer. Sufficient numbers of receptacles were available for general refuse collection and sorting.

All dump trucks engaged on site was equipped with RTTM system during the reporting period. The Surveillance Team of the ET conducted regular site inspection on the dump trucks and their track records. No illegal dumping and landfilling of C&D materials was found during the reporting period.

Wastes generated during this reporting period include mainly non-inert construction wastes. Reference has been made to the waste flow tables prepared by the Contractors. The quantities of different types of wastes and imported fill materials are summarised in Table 2.8.

Table 2.8 Quantities of Different Waste Generated and Imported Fill Materials

Contract No.	Month/Year	Inert C&D Materials ^a(m³)	Imported Fill ^b(sand) (m³)	Imported Fill ^c(public fill) (m³)	Inert Construction Waste Re-used ^d(m³)	Non-inert Construction Waste ^e (m³)	Recyclable Materials ^f (kg)	Chemical Wastes (kg)
TCNTE (East)	1 to 31 May 26	408.44	0.0	0.0	6,486.0	326.97	22,300.0	0.0
	1 to 30 Jun 26	71.37	0.0	0.0	5,090.0	280.81	0.0	0.0
	1 to 31 Jul 26	77.78	0.0	0.0	4,055.0	269.93	0.0	0.0

Note:

a Inert construction wastes include hard rock and large broken concrete, and materials disposed as public fill.

b Imported materials include of sand fill from any source outside of TCNTE.

c Imported sorted public fill include all G200, G400 and glass gullet (local recycling materials) from any source outside of TCNTE.

d Reuse of inert construction waste generated under the TCNTE contracts.

e Non-inert construction wastes include general refuse disposed at landfill.

f Recyclable materials include metals, paper, cardboard, plastics and others.

2.10 LANDSCAPE AND VISUAL MONITORING

Implementation of applicable landscape and visual mitigation measures was monitored in accordance with the Updated EM&A Manual. All measures undertaken by the Contractor during the construction phase and establishment work phase shall be audited by ET to ensure compliance with the intended aims of the measures.

The implementation status of the environmental protection measures is summarized below in Table 2.9. Examples of landscape and visual mitigation measures are presented in Annex J1. The monitoring programme for detailed design, construction and establishment stages is presented in Table 2.10. Event and Action Plan for Landscape and Visual impacts is stated in Annex J2.

Landscape and Visual Mitigation Measures during Construction	Implementation Status	Relevant Contract(s) in the Reporting Period
MM1 – Optimization of Construction Areas & Providing Temporary Landscape on Temporary Construction	Implementation of the measures were carried out during the detailed design stage of the Project.	NA
MM2 – Minimize Topographical Changes	Implementation of the measures were carried out during the detailed design stage of the Project.	NA
MM3 – Preservation of Potentially Registerable OVTs, Rare and Protective Vegetation	Tree Protection Specifications were provided in the relevant Contract Specifications respectively for implementation by the Contractors under the Project. The Contractors submitted Detailed Preservation and/or Translocation Plan for Plant Species of Conservation Importance under EP condition 2.21. The Contractors’ performance on the implementation of the tree maintenance and protection measures were observed and checked by the ET weekly during construction period.	All works contracts
MM4 – Transplanting of Existing Trees	Tree Transplanting Specifications were provided in the relevant Contract Specifications respectively for implementation by the Contractors under the Project where trees would unavoidably be affected by the construction works. The Contractors submitted Detailed Preservation and/or Translocation Plan for Plant Species of Conservation Importance under EP condition 2.21. The transplanted plant species of conservation importance were both certified as dead trees by the QP on 15 June 2022 as no living signs were observed.	Contract 2
MM5 – Screen Hoarding	The implementation of mitigation measures was checked by ET during weekly site inspection. Implementation of the measures by Contractors was observed.	All works contracts
MM6 – Adopting Non-dredge Method for the Reclamation	Not applicable during the reporting period.	NA
MM9 – Providing Natural Rock Material/ Planting for Artificial Seawall	Rock armour reused and construction of eco-shoreline (mangrove eco-shoreline, rocky eco-shoreline and vertical eco-shoreline) in progress. The implementation of mitigation measures was checked by ET during weekly site inspection. Implementation of the measures by Contractors was observed.	Contract 3
MM10 – Compensatory Planting	Not applicable during the reporting period.	NA
MM11 – Woodland Restoration	The implementation of mitigation measures was checked by ET during weekly site inspection. Implementation of the measures by Contractors was observed.	Contract 3
MM12 – Screen Planting	Not applicable during the reporting period.	NA
MM13 – Roadside Planting	The implementation of mitigation measures was checked by ET during weekly site inspection. Implementation of the measures by Contractors was observed.	All works contracts
MM14 – Aesthetic Design of Built Development	The implementation of mitigation measures was checked by ET during weekly site inspection. Implementation of the measures by Contractors was observed.	All works contracts
MM15 – Maximise Greening on Structures	The implementation of mitigation measures was checked by ET during weekly site inspection. Implementation of the measures by Contractors was observed.	All works contracts
MM16 – Noise Barrier Design	Not applicable during the reporting period.	NA
MM18 – Landscaping on Slopes	Not applicable during the reporting period.	NA
MM20 – Lighting Control	The implementation of mitigation measures was checked by ET during weekly site inspection. Implementation of the measures by Contractors was observed.	All works contracts

Table 3.1 Major Activities for the Next Reporting Period

Activities	Key Issues	Key Mitigation Measures
Contract No. NL/2020/02 - Tung Chung New Town Extension – Salt Water Supply System (Contract 2)
Land-based Works
· Slope works, road and drain works for SWSR at Portion 3 · Remedial and Outstanding Works of SWSR at Portion 3 · Overall CCTV survey on new laid watermain	· Dust emission · Handling and storage of C&D materials generated from construction activities · Noise from plant operation · Emission of dark smoke from PMEs · Efficiency of wastewater and drainage management · Tree protection	· Good site practices · Regular water spraying on stockpiles, unpaved haul road and land filling area · Provide tarpaulin sheets coverage on stockpiles · Sorting and reuse of C&D materials as far as practicable · Use of QPME and noise barrier/acoustic mat · Regular maintenance of PMEs · Implementation of wastewater and drainage management · Retain and protect all existing trees and vegetation within the study area which are not directly affected by the works
Contract No. NL/2020/03 - Tung Chung New Town Extension – Major Infrastructure Works in Tung Chung East (Contract 3)
Land-based Works
· Excavation and ELS works at Portion 104 · Excavation and ELS works at CUT no.1, 2, 3, 4 and supporting building · Construction works for CUT no. 1 and 3 structure · UU laying works in CUT 1,2,3 · Back-filling works for CUT 2 · Construction works and furniture installation of PM office at WA9 · Construction works of Contractor office at WA6 · Drainage, Sewerage and watermain works at Road L5, L7, L8, L9, D4 and D5 and Portion 16 · DCS works at Road L5, D4 and L7. · Pipe laying works for twin rising mains/ watermain laying at Man Tung Road · Preparation and pipe jacking works at Ying Tung Road · Pipe jacking works at Yi Tung Road · Backfilling works for noise barrier at Portion 11 · Road and drainage works in Road P1 · Road works in Road L3, L4 and L5 · Road widening works at Ying Hei Road · ELS for SIBC construction · Construction for BC3 at Portion 22B · Pipe pile installation at underpass D1	· Dust emission · Handling and storage of C&D materials generated from construction activities · Noise from plant operation · Emission of dark smoke from PMEs · Efficiency of wastewater and drainage management	· Good site practices · Regular water spraying on stockpiles, unpaved haul road and land filling area · Provide tarpaulin sheets coverage on stockpiles · Sorting and reuse of C&D materials as far as practicable · Use of QPME and noise barrier/acoustic mat · Regular maintenance of PMEs · Implementation of wastewater and drainage management
Contract No. NL/2020/07 - Tung Chung New Town Extension – Tai Ho Interchange (Contract 7)
Land-based Works
· Final pressure test for rising mains and 600SW at Portion 146-1 to 146-11 · Road and Drainage works , street furniture at SR-A1 to A5 at Portion 31 · Drainages works at Portion 146-3 · Smart lamp poles ducting laying and footings at Road P1 footpath at 146-3,146-4 146-7 and 146-11, 146-12 · Formation for Road P1 footpath and cycle track at 146-3, 146-4, and 146-11 · Irrigation pipes at P1 road · Smart Lamp poles at P1 road · Backfilling soil mix at P1 road dwarf wall · Pak Mong Bridge insitu deck and furniture · Roads reinstatement at Portion 32 Depot section · RC works and drainage works at SR6 eastbound near Wall D · Parapet Transition construction at RW-R7, A1 and A2 · Parapet construction RW-R5 and Wall D Bay · Road works at Bridge C and Approaching Box Structures · Earthworks casting yard A2 · Asphalt paving, kerbs and concrete profile barriers installation for Road P1 at 146-2, 146-3 · Site clearance within site boundary	· Dust emission · Handling and storage of C&D materials generated from construction activities · Noise from plant operation · Emission of dark smoke from PMEs · Efficiency of wastewater and drainage management · Tree protection	· Good site practices · Regular water spraying on stockpiles, unpaved haul road and land filling area · Provide tarpaulin sheets coverage on stockpiles · Sorting and reuse of C&D materials as far as practicable · Use of QPME and noise barrier/acoustic mat · Regular maintenance of PMEs · Implementation of wastewater and drainage management · Retain and protect all existing trees and vegetation within the study area which are not directly affected by the works

^([1]) ERM (2018a). Updated Environmental Monitoring and Audit Manual for Tung Chung New Town Extension. Deposited to EPD under EP-519/2016

^([2]) Arup (2015). Environmental Impact Assessment Report for Tung Chung New Town Extension. Deposited to EPD under Register No. AEIAR-196/2016

^([3]) Impact monitoring at monitoring station NMS-CA-1A commenced on 19 September 2018 in view of the close vicinity of the construction works near the residential area at Century Link.

^([4]) Due to land handover issue, NMS-CA-1A was relocated to Ying Hong Road which is located 60m away from the original location. Proposal on the relocation of NMS-CA-1A was approved by IEC on 23 November 2018. Noise monitoring at the relocated location commenced since 24 November 2018.

^([5]) Starting from June 2025, the quarterly post-planting monitoring report would be prepared under Contract 3.

LIST OF FIGURES
FIGURE 1.1	LOCATION OF CONTRACT NO. NL/2017/03 – TUNG CHUNG NEW TOWN EXTENSION – RECLAMATION AND ADVANCE WORKS (CONTRACT 1)
FIGURE 1.2	LOCATION OF CONTRACT NO. NL/2020/02 – TUNG CHUNG NEW TOWN EXTENSION – SALT WATER SUPPLY SYSTEM (CONTRACT 2)
FIGURE 1.3	LOCATION OF CONTRACT NO. NL/2020/03 – TUNG CHUNG NEW TOWN EXTENSION – MAJOR INFRASTRUCTURE WORKS IN TUNG CHUNG EAST (CONTRACT 3)
FIGURE 1.4	LOCATION OF CONTRACT NO. NL/2020/02 – TUNG CHUNG NEW TOWN EXTENSION – TAI HO INTERCHANGE (CONTRACT 7)
FIGURE 2.1	CONSTRUCTION DUST MONITORING STATION LOCATION
FIGURE 2.2	CONSTRUCTION AIRBORNE NOISE MONITORING STATION LOCATION

Stage	Monitoring Task	Monitoring Report	Form of Approval	Frequency
Design	Monitoring of design works against the recommendations of the landscape and visual impact assessments within the EIA should be undertaken by the Engineer and Landscape Architect, to ensure that they fulfil the intentions of the mitigation measures. Any changes to the design, including design changes on site should also be checked	Report by CEDD / ER confirming that the design conforms to requirements of EP.	Approval by Project Proponent	At completion of design stage
Construction	Monitoring of the contractor’s operations during the construction period.	Report on Contractor's compliance by ET	Counter-signature of report by IEC	Monthly
Establishment Works	Monitoring of the planting works during the 24-months Establishment Period after completion of the construction works.	Report on Contractor's compliance by ET	Counter-signature of report by IEC	Bi-monthly