Contents

Executive Summary  1

1. Introduction  3

1.1 Background  3

1.2 Scope of the EM&A Report  4

1.3 Organisation Structure  4

1.4 Summary of Construction Works  5

1.5 Summary of EM&A Programme Requirements  7

1.6 Status of other Statutory Environmental Requirement  9

2. Monitoring Results  11

2.1 Air Quality Monitoring  11

2.1.1 Monitoring Requirements and Equipment 11

2.1.2 Results and Observations  12

2.2 Noise Monitoring  13

2.2.1 Monitoring Requirements and Equipment 13

2.2.2 Monitoring Schedule for the Reporting Month  14

2.2.3 Results and Observations  14

2.3 Water Quality Monitoring  15

2.3.1 Monitoring Requirements and Equipment 15

2.3.2 Monitoring Schedule for the Reporting Month  18

2.3.3 Results and Observations  18

2.4 Ecological Monitoring  19

2.4.1 Egretry Monitoring Requirements  19

2.4.2 Egretry Monitoring Methodology  20

2.4.3 Results and Observations of Egretry Monitoring  20

2.4.4 Flight Corridor Monitoring Requirements  22

2.4.5 Flight Corridor Monitoring Methodology  22

2.4.6 Results and Observations of Flight Corridor Monitoring  23

2.5 EM&A Site Inspection  24

2.6 Waste Management  25

2.7 Implementation Status of Environmental Mitigation Measures  27

2.8 Summary oF Complaints, Notification OF Summons AND Successful Prosecutions  27

3. Future Key Issues  28

3.1 Construction Programme for the coming Three Months  28

3.2 Monitoring Schedule for the Future Three Months  30

4. Conclusion and Recommendations  32

Annex A PROJECT ORGANISATION

Annex B Construction Programme

Annex C Environmental Licenses and Permits of the Project

Annex D1 CALIBRATION CERTIFICATES (ONSITE SENSORS)

Annex D2 CALIBRATION CERTIFICATES (TRANSFER STANDARDS)

Annex D3 AIR QUALITY MONITORING RESULTS

Annex D4 WIND CONDITIONS

Annex D5 EVENT AND ACTION PLAN FOR AIR QUALITY MONITORING

Annex E1 Calibration Certificates (Sound Level Meters and Acoustic Calibrators)

Annex E2 Noise Monitoring Schedule during Reporting Period

Annex E3 Noise Monitoring Results

Annex E4 Event and Action Plan for Noise Monitoring

Annex F1 Calibration Certificates of Water Quality Monitoring Equipment

Annex F2 Water Quality Monitoring Schedule during Reporting Period

Annex F3 Water Quality Monitoring Results

Annex F4 Event and Action Plan for Water Quality Monitoring

Annex G Ecological Monitoring Schedule during Reporting Period

Annex H Waste Flow Table

Annex I Environmental Mitigation Implementation Schedule

Annex J Tentative Schedules of Environmental Monitoring for Future 3 Months

Annex K Status of EP Submissions

List of Tables

Table 1.1 Summary of Environmental Permits under the Project and the Respective Active Works Contracts  3

Table 1.2 Contact Information of Key Personnel  4

Table 1.3 Major CONStRUCTION WORKS IN THE REPORTING PERIOD  5

Table 1.4 Summary of Status for the Environmental Aspects under the EM&A Manual  7

Table 2.1 Action and Limit Levels for Air Quality (Dust) 11

Table 2.2 Air Quality Monitoring Details  11

Table 2.3 Summary of 1-Hour RSP Monitoring Results in the Reporting Period  12

Table 2.4 Summary of 24-hour rolling average RSP Monitoring Results in the Reporting Period  12

Table 2.5 Summary of 24-hour rolling average FSP Monitoring Results in the Reporting Period  13

Table 2.6 Action and Limit Levels for Construction noise  13

Table 2.7 impact Noise Monitoring Details  14

Table 2.8 Summary of Construction Noise Monitoring Results in the Reporting Period  15

Table 2.9 Calculated Action and Limit Levels for Water Quality  16

Table 2.10 Locations of Impact Water Quality Monitoring Stations and Monitoring Requirements  17

Table 2.11 impact Water Quality Monitoring Equipment  18

Table 2.12 Details of Exceedances Recorded for Water Quality Monitoring  19

Table 2.13 number of nests and ardeids recorded at MPLV Egretry  21

Table 2.14 usage of flight paths recorded at MPLV egretry  21

Table 2.15 usage of flight paths and flight heights recorded at mpLv egretry  22

Table 2.16 number of Birds recorded at the Flight Corridor  23

Table 2.17 usage of flight paths recorded at the Flight Corridor  23

Table 2.18 usage of flight paths and flight heights recorded at the Flight Corridor  23

Table 2.19 Key Observations Identified during the site inspection in this Reporting Month  24

Table 2.20 Quantities of Waste Generated in Reporting Period  26

Table 2.21 Statistics on environmental complaint, notification of summons or Successful prosecution  27

Table 3.1 Major Construction Works in the Next Three Months  28

Table 3.2 summary table for the Additional air quality monitoring stations for the Expanded works area under ND/2025/01  31

Table 3.3 summary table for the Additional Noise monitoring stations for the Expanded works area under ND/2025/01  31

Table 3.4 summary table for the Additional water quality monitoring stations for the Expanded works area under ND/2025/01  31

List of Figures

FIGURE 1.1      Location of Project

FIGURE 2.1      Locations of Air Quality Monitoring Stations

FIGURE 2.2      Locations of Noise Monitoring Stations

FIGURE 2.3      Location of Water Quality Monitoring Stations

FIGURE 2.4      Location of Egretry and 100m Buffer Area

FIGURE 2.5      Location of Egretry and Vantage Points

FIGURE 2.6      Flight Paths at MPV and MPLV Egretries

FIGURE 2.7      Location of Egretry and 100m Buffer Area (recorded in EIA and in 2025)

FIGURE 2.8      Location of 300m Flight Corridor and Vantage Point for Flight Corridor Monitoring

FIGURE 2.9      Flight Paths Observed at the 300m Flight Corridor

Executive Summary

This is the Monthly Environmental Monitoring and Audit (EM&A) Report presenting the EM&A works during the period of August 2026 for the San Tin Technopole Phase 1 Development (the Project) in accordance with the EM&A Manual.  Three (3) works contracts, Package 1 Contract 1 (ND/2024/09) and Package 2 Contract 1 (ND/2024/10) and Contract 2 (ND/2025/01), are active in this reporting period.  

· The construction of ND/2024/09 commenced on 29 September 2025;  

· The construction of ND/2024/10 commenced on 18 September 2025;

· The construction of ND/2025/01 commenced on 1 August 2026;

A summary of EM&A activities conducted in the reporting period is listed below:

Air Quality Monitoring                             Continuous impact monitoring

Noise Monitoring

• ND/2024/09                                    4 sessions

• ND/2024/10                                    4 sessions

• ND/2025/01                                    4 sessions

Water Quality Monitoring

• ND/2024/09                                    13 sessions

• ND/2024/10                                    13 sessions

• ND/2025/01                                    13 sessions

Ecological Monitoring                              1 session for Flight Corridor Monitoring

1 session for Mai Po Lung Village (MPLV) Egretry

1 session for Mai Po Village (MPV) Egretry

6 sessions for Pre-construction survey for Fauna Species for conversation importance

1 session for Pre-construction Vegetation Survey

Environmental Site Inspection

• ND/2024/09                                     5 sessions

• ND/2024/10                                     4 sessions

• ND/2025/01                                    4 sessions

Environmental site audits, including weekly site inspections of construction works by representatives from ET, Engineer and Contractor; and joint site inspection with Independent Environmental Checker (IEC) were conducted during the reporting period.  Based on the audit results and the observation for the reporting period, environmental pollution control and mitigation measures for the Project were properly implemented.

Breaches of Action and Limit Levels for Air Quality

No exceedance of Action and Limit Levels was recorded for impact air quality monitoring in the reporting period

Breaches of Action and Limit Levels for Noise

No exceedance of Action and Limit Levels was recorded for impact noise monitoring in the reporting period. 

Breaches of Action and Limit Levels for Water Quality

No Project-related Action nor Limit level exceedance was recorded in the reporting period. A total of one (1) Limit Level exceedance was recorded for impact water quality monitoring, investigation was conducted, and all exceedances were confirmed to be not Project‑related. Therefore, no further action under the Event and Action Plan was required.

Environmental Complaints, Non-compliance & Summons

There was no environmental complaint, notification of summons or prosecution recorded in the reporting period.

Reporting Change

There was no reporting change in the reporting period.

Key Issues For The Next Three Months

Potential environmental impacts arising from the upcoming construction activities in the next three months are mainly associated with dust emission, noise from plant operation, handling and storage of C&D materials generated from construction activities, efficiency of wastewater and drainage management and tree protection.  The ET will keep track on the construction works to confirm compliance with environmental requirements and the proper implementation of all necessary mitigation measures. 

1. Introduction

1.1 Background

San Tin Technopole Phase 1 Development (“the Project”) mainly covers innovation & technology (I&T) land parcels to the north of San Tin Highway/Fanling Highway, some residential land to the south and the key infrastructure areas with road connections. The construction of the Project will be delivered under various works contracts and its scope of works comprises the following elements:

• Site formation of land for innovation and technology development, housing, community, commercial and other developments;

• Engineering infrastructure works including but not limited to roadworks, drainage, sewerage, waterworks, pumping stations, fresh water and flushing water service reservoirs, Common Utility Tunnel (CUT) and other associated buildings / structures / E&M systems for the Project; and

• Landscaping works;

The Environmental Impact Assessment (EIA) Report for the San Tin/Lok Ma Chau Development Node (STLMC DN) (Register No. AEIAR-261/2024) was approved on 17 May 2024. Three (3) works contracts, ND/2024/09, ND/2024/10 and ND/2025/01, are active in this reporting period.  The construction of ND/2024/09 commenced on 29 September 2025, the construction of ND/2024/10 commenced on 18 September 2025 and the construction of ND/2025/01 commenced on 1 August 2026. The location of the Project, including the associated works areas of each active works contract is shown in Figure 1.1. The relevant Environmental Permits (EPs) under the Project and the respective works contracts are summarized in Table 1.1.

Table 1.1  Summary of Environmental Permits under the Project and the Respective Active Works Contracts

EP	Designated Project	Work Contracts
		ND/2024/09	ND/2024/10	ND/2025/01
EP-640/2024	San Tin / Lok Ma Chau Water Reclamation Plant	P
EP-641/2024	San Tin / Lok Ma Chau Effluent Polishing Plant	P
EP-664/2025	Revitalisation of San Tin Eastern Main Drainage Channel
EP-665/2025	Recreational Development (“Open Space”) along San Tin Western Main Drainage Channel and at Mai Po Lung Village within Deep Bay Buffer Zone 2
EP-666/2025	New Primary Distributor Road (Road P1) and District Distributor Roads (Roads D1, D2, D3, D4, D5 and D6) for San Tin / Lok Ma Chau Development Node	P^(a)		P^(b)

(a) construction activity will be commenced on 24 September 2026

(b) construction activity under ND/2025/01 was commenced at non-DP area only in the reporting period.

ERM-Hong Kong, Limited (ERM) is commissioned to undertake the role of Environmental Team (ET) for the Project in accordance with the requirements specified in the Environmental Permit(s), the Environmental Monitoring and Audit (EM&A) Manual, the EIA Report of the STLMC DN project and other relevant statutory requirements.

1.2 Scope of the EM&A Report

This is the Monthly EM&A Report for the Project which summarises the key findings of the EM&A programme during the reporting period of August 2026.

1.3 Organisation Structure

The organisation structure of the Project is shown in Annex A.  The key personnel contact names and details are summarised in Table 1.2 below.

Table 1.2  Contact Information of Key Personnel

Party	Position	Name	Telephone
Environmental Team (ET) (ERM-Hong Kong, Limited)	ET Leader	Raymond Chow	2271 3281
	ET Leader Representative (EP-640/2024)	Manson Yeung	2271 3012
	ET Leader Representative (EP-641/2024)	Pako Yu	2271 3027
Independent Environmental Checker (IEC) (Mott MacDonald Hong Kong Limited)	IEC	Thomas Chan	2828 5967
	IEC Representative (EP-640/2024)	Sunny Chan	2828 5962
	IEC Representative (EP-641/2024)	Jay Chua	2828 5710
Contract No. ND/2024/09
Civil Engineering and Development Department	Senior Engineer	Vicky W.K. Yuen	3426 2590
	Engineer	Stanley C.Y. Hung	3152 3564
Engineer’s Representative (ER) (AECOM - Halcrow Joint Venture)	Chief Resident Engineer	Albert Yu	8493 0329
	Senior Resident Engineer	Timonthy Chan	8494 6981
	Senior Resident Engineer	Tony Chan	8491 4870
Contractor (CR15G - Tung Lee Joint Venture)	Project Director	Kit Chan	9681 8144
	Site Agent	Wilson Chan	9656 8865
	Sub Agent	Ken Lam	9494 3132
	Environmental Officer	Frank Liu	6900 3526
	Environmental Supervisor	Johnny Kam	6178 4786
Contract No. ND/2024/10
Civil Engineering and Development Department	Senior Engineer	Albert S. Lam	3547 1635
	Engineer	Patrick P.L. Wan	3152 3472
Engineer’s Representative (ER) • (Arup - Binnies Joint Venture)	Chief Resident Engineer	Victor Go	2608 7688
	Senior Resident Engineer	Raymond Cheung	2908 4924
Contractor (Kuly Construction & Engineering Company Limited)	Senior Project Manager	Ma Kin Man	9552 1734
	Site Agent	Tang Wing Kai	9300 7037
	Environmental Officer	Brenda Yiu	9346 3966
Contract No. ND/2025/01
Civil Engineering and Development Department	Chief Engineer	S. P. Chow	3152 3399
	Senior Engineer	Tony Tong	3152 3507
	Engineer	Cherry Suen	3152 2876
Engineer’s Representative (ER) (Arup - Binnies Joint Venture)	Chief Resident Engineer	Victor Go	2608 7688
	Senior Resident Engineer	Roy Lau	6386 5410
Contractor (CRBC – Maylon Joint Venture)	Site Agent	Wilmer Ng	6313 4818
	Environmental Manager	Calvin So	9724 6254
	Environmental Officer	Karen Leung	5239 3606

1.4 Summary of Construction Works

As informed by the Contractor, details of the major construction works carried out in this reporting period are listed in Table 1.3.  The construction programme is shown in Annex B.

Table 1.3  Major CONStRUCTION WORKS IN THE REPORTING PERIOD

Construction Works Undertaken	Key Issues	Key Mitigation Measures
Contract No. ND/2024/09
• Site Formation Works (Area C) • Operation of Shredding Facilities • Reuse of marine disposal from Channel G • Tree Felling Works • Arsenic soil treatment	• Dust emission • Handling and storage of construction and demolition (C&D) materials • Noise from use of Powered Mechanical Equipment (PME) • Emission of dark smoke from PMEs • Proper discharge of wastewater • Prevention and proper discharge of surface runoff • Tree protection	• Good site practices • Regular water spraying on stockpiles • Provide tarpaulin sheets coverage on stockpiles and reuse of C&D materials as far as practicable • Use of QPME and noise barrier/acoustic mat/enclosure • 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. ND/2024/10
• Construction for Box Culvert • Construction of Sewerage Pipe • Construction of containment wall • Construction of Site Formation	• Dust emission • Handling and storage of C&D materials • Noise from use of PME • Emission of dark smoke from PMEs • Proper discharge of wastewater • Prevention and proper discharge of surface runoff • Tree protection	• Good site practices • Regular water spraying on stockpiles • Provide tarpaulin sheets coverage on stockpiles and reuse of C&D materials as far as practicable • Use of Quality Powered Mechanical Equipment (QPME) and noise barrier/acoustic mat/enclosure • 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. ND/2025/01
• Site clearance and demolition works • Tree felling works • Ground investigation works • Environmental ground investigation works for contaminated soil • Ground improvement works (Part 1C)	• Dust emission • Handling and storage of construction and demolition (C&D) materials • Noise from use of Powered Mechanical Equipment (PME) • Emission of dark smoke from PMEs • Proper discharge of wastewater • Prevention and proper discharge of surface runoff • Tree protection	• Good site practices • Regular water spraying on stockpiles • Provide tarpaulin sheets coverage on stockpiles and reuse of C&D materials as far as practicable • Use of QPME and noise barrier/acoustic mat/enclosure • 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

1.5 Summary of EM&A Programme Requirements

The status for all environmental aspects is presented in Table 1.4.  The EM&A programme requirements remained unchanged during the reporting period.

Table 1.4  Summary of Status for the Environmental Aspects under the EM&A Manual

Parameters	Status
Air Quality
Impact Monitoring	On-going for Contract Nos. ND/2024/09, ND/2024/10 and ND/2025/01, monitoring conducted continuously.
Noise
Baseline Monitoring	The results of baseline noise monitoring for Contract Nos. ND/2024/09, ND/2024/10 and ND/2025/01 were reported in Baseline Monitoring Report and submitted to EPD under the EM&A Manual Section 16.3 and EP Condition 3.3. The works area of ND/2025/01 will be expanded in September 2026, baseline monitoring commenced in August 2026.
Impact Monitoring	On-going for Contract Nos. ND/2024/09, ND/2024/10 and ND/2025/01, monitoring conducted once per week.
Water Quality
Baseline Monitoring	The results of baseline water quality monitoring for Contract Nos. ND/2024/09, ND/2024/10 and ND/2025/01 were reported in Baseline Monitoring Report and submitted to EPD under the EM&A Manual Section 16.3 and EP Condition 3.3. The works area of ND/2025/01 will be expanded in September 2026, baseline monitoring commenced in August 2026.
Impact Monitoring	On-going for Contract Nos. ND/2024/09, ND/2024/10 and ND/2025/01, monitoring conducted 3 days per week.
Waste Management
Waste Monitoring	On-going
Land Contamination
Contamination Assessment Plan (CAP), Remediation Action Plan (RAP) and Remediation Report (RR)	On-going
Ecology
Wetland Compensation Monitoring (Monitoring on Construction Phase Disturbance)	The 12-month baseline monitoring was completed under NDO 08/2024. To be conducted when construction activities occur within 400m from the contiguous pond / wetland habitats on the northern portion of the Project area. The monitoring will commence in September 2026.
Wetland Compensation Monitoring (Monitoring on Wetland Enhancement)	The 12-month baseline monitoring was completed under NDO 08/2024.To be conducted at certain milestones between the commencement of pond filling and the full operation of San Tin Technopole.
Night Roost Monitoring	Pre-construction Night Roost Survey commenced in September 2025 and completed in March 2026, a standalone report was prepared. The monitoring will commence in September 2026.
Egretry Monitoring	On-going between March and early September.
Flight Corridor Monitoring	Flight Corridor Monitoring commenced in August 2026.
Woodland Compensation Monitoring	To be conducted after completion of compensatory planting.
Pre-construction Vegetation Survey	Pre-construction Vegetation Survey for contract ND/2025/01 commenced in May 2026, a standalone report for the survey will be prepared.
Post-transplantation / Post-seedling Planting Monitoring of Flora Species of Conservation Importance	To be conducted after the transplantation / seedling planting.
Pre-construction Survey for Fauna Species of Conservation Importance	Pre-construction Survey for Fauna Species of Conservation Importance for contract ND/2025/01 commenced in July 2026, a standalone report for the survey will be prepared.
Post-translocation Monitoring of Fauna Species of Conservation Importance	To be conducted after the translocation in August 2026 for contract ND/2025/01.
Pre-construction Site Check and Nest Control	Pre-construction Site Check and Nest Control commenced in March 2026 and completed in July 2026. The associated nest control measures to be conducted in non-breeding season (August to February) after pre-construction survey. The standalone reports were prepared.
Pre-construction Site Check for Eurasian Otter	To be conducted prior to the commencement of construction activities.
Wildlife Corridor Monitoring	To be conducted upon establishment of the wildlife corridors.
Site Environmental Audit
Regular Site Inspection	On-going
Environmental Log Book	On-going

Taking into account the construction works, impact monitoring of air quality, noise, water quality, ecological and waste management were carried out in the reporting period.  The monitoring schedule of noise, water quality and ecology are provided in Annex E2, Annex F2 and Annex G, 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.  The relevant EP submissions are listed in Annex K.

1.6 Status of other Statutory Environmental Requirement

The environmental licenses and permits, including EP, 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 C.  No non-compliance with environmental statutory requirements was recorded.

2. Monitoring Results

2.1 Air Quality Monitoring

2.1.1 Monitoring Requirements and Equipment

According to the EM&A Manual of the Project, impact air quality monitoring in terms of 1-hour average Respirable Suspended Particulate (RSP), 24-hour rolling average RSP and 24-hour rolling average Fine Suspended Particulate (FSP) concentrations, was conducted continuously with air sensors.  The results of these monitoring parameters are compared with the corresponding Action and Limit levels listed in Table 2.1. 

Table 2.1  Action and Limit Levels for Air Quality (Dust)

Parameter	Action Level	Limit Level
1-hour RSP	150 μg/m^3	Not applicable
24-hour RSP (rolling average)	Not applicable	100 μg/m^3
24-hour FSP (rolling average)	Not applicable	50 μg/m^3

The monitoring locations and air sensors used in the continuous impact air quality monitoring are summarised in Table 2.2 and illustrated in Figure 2.1.  Copies of the calibration certificates for the onsite air sensors at the monitoring stations and the transfer standards are presented in Annex D1 and Annex D2 respectively.

Table 2.2  Air Quality Monitoring Details

Monitoring Station	Relevancy to Works Contract	Location	Equipment
M02	ND/2025/01	Ha Wan Fisherman San Tsuen	MAS-Dust (S/N: dev9204Z250700025)
M03	ND/2024/10 & ND/2025/01	Pun Uk Tsuen	MAS-Dust (S/N: dev9204Z250700007)
M04	ND/2024/10 & ND/2025/01	Chau Tau Tsuen	MAS-Dust (S/N: dev9204Z250700006)
M06	ND/2024/09	Mai Po San Tsuen	MAS-Dust (S/N: dev9204Z250800014)
M09	ND/2024/10 & ND/2025/01	Wing Ping Tsuen	MAS-Dust (S/N: dev9204Z250700005)
M10	ND/2025/01	Village house near San Tin Siu Hum Tuen	MAS-Dust (S/N: dev9204Z250700026)
M11	ND/2024/09	Shek Wui Wai	MAS-Dust (S/N: dev9204Z250800013)
M13	ND/2024/09	Rolling Hills (rooftop area)	MAS-Dust (S/N: dev9204Z250800016)
M14	ND/2024/09	Rolling Hills (outside of Rolling Hills)	MAS-Dust (S/N: dev9204Z250800015)
M15a ^(a)	ND/2024/09	The STEP	MAS-Dust (S/N: dev9204Z250900019)

(a) The permission from the property management office of M15a – The STEP has been granted in October 2025.  The air quality monitoring at M15a commenced on 18 October 2025.

2.1.2 Results and Observations

The monitoring data and the graphical presentation for 1-hour RSP, 24-hour rolling average RSP and 24-hour rolling average FSP concentrations are summarised in Table 2.3 to Table 2.5. Major dust sources in the reporting period included haul road traffic and earth moving construction activities associated with the site formation works and tree felling works.  The monitoring data and the graphical presentation are provided in Annex D3.  Wind data during the reporting period extracted from the Hong Kong Observatory (HKO)’s weather station at Wetland Park via DATA.GOV.HK are presented in Annex D4.

Table 2.3  Summary of 1-Hour RSP Monitoring Results in the Reporting Period

Monitoring Station	Average (µg/m^3)	Range (µg/m^3)	Action Level (µg/m^3)	Limit Level (µg/m^3)
M02	19.9	4.2 - 45.6	150	Not applicable
M03	6.4	1.1 - 25.5	150	Not applicable
M04	18.9	4.8 - 44.1	150	Not applicable
M06	20.3	4.3 - 47.6	150	Not applicable
M09	18.0	6.8 - 48.3	150	Not applicable
M10	21.1	3.6 - 59.0	150	Not applicable
M11	19.2	4.4 - 53.7	150	Not applicable
M13	22.6	4.9 - 53.7	150	Not applicable
M14	20.2	5.7 - 42.7	150	Not applicable
M15a	14.9	1.9 - 40.0	150	Not applicable

Table 2.4  Summary of 24-hour rolling average RSP Monitoring Results in the Reporting Period

Monitoring Station	Average (µg/m^3)	Range (µg/m^3)	Action Level (µg/m^3)	Limit Level (µg/m^3)
M02	19.8	7.4 - 38.1	Not applicable	100
M03	6.4	1.6 - 16.1	Not applicable	100
M04	18.9	7.5 - 32.2	Not applicable	100
M06	20.2	6.4 - 36.4	Not applicable	100
M09	18.0	8.2 - 35.9	Not applicable	100
M10	21.0	6.9 - 40.7	Not applicable	100
M11	19.1	7.1 - 41.1	Not applicable	100
M13	22.6	8.1 - 41.1	Not applicable	100
M14	20.2	9.6 - 33.7	Not applicable	100
M15a	14.7	3.5 - 27.8	Not applicable	100

Table 2.5  Summary of 24-hour rolling average FSP Monitoring Results in the Reporting Period

Monitoring Station	Average (µg/m^3)	Range (µg/m^3)	Action Level (µg/m^3)	Limit Level (µg/m^3)
M02	10.3	3.4 - 20.3	Not applicable	50
M03	4.9	1.3 - 12.0	Not applicable	50
M04	13.0	4.9 - 25.8	Not applicable	50
M06	13.7	4.5 - 26.5	Not applicable	50
M09	13.5	6.0 - 28.2	Not applicable	50
M10	12.6	3.7 - 29.0	Not applicable	50
M11	7.9	2.1 - 17.1	Not applicable	50
M13	14.4	4.5 - 28.1	Not applicable	50
M14	11.5	4.2 - 24.3	Not applicable	50
M15a	10.2	2.5 - 20.3	Not applicable	50

No exceedance of Action and Limit Levels was recorded in the reporting period. No action was thus required in accordance with the Event and Action Plan presented in Annex D5.

2.2 Noise Monitoring

2.2.1 Monitoring Requirements and Equipment

According to the EM&A Manual of the Project, noise impact monitoring was conducted once per week during the construction phase of the Project.  The Action and Limit Levels for construction noise of the Project are provided in Table 2.6 below.

Table 2.6  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) If works are to be carried out during restricted hours, the conditions stipulated in the Construction Noise Permit (CNP) issued by the Noise Control Authority have to be followed.

(b) 70 dB(A) and 65 dB(A) for schools during normal teaching periods and school examination periods, respectively.

According to the EM&A Manual of the Project, baseline noise monitoring shall be carried out daily at all identified monitoring stations for at least two weeks prior to the commencement of construction works.

Noise monitoring was performed using sound level meter at the designated monitoring stations provided in Table 2.7 and Figure 2.2, in accordance with the requirements stipulated in the 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 2.7.  Copies of the calibration certificates for the equipment are presented in Annex E1. 

Table 2.7  impact Noise Monitoring Details

Monitoring Station	Relevancy to Works Contract	Location	Parameter and Frequency	Monitoring Dates	Equipment	Type of Measurement
CM1	ND/2024/09	69 Mai Po San Tsuen	30-minute measurement between 0700 and 1900 on normal weekdays (Monday to Saturday) Once per week for 30 mins during the construction period of the relevant works contracts of the Project	4, 13, 18 and 25 August 2026	Sound Level Meter: Rion NL-52 (S/N: 00542913, 01010406 & 00331805) Acoustic Calibrator: Larson Davis CAL200 (S/N: 11333)	Free field
CM3	ND/2024/09	Scenic Heights Block B2				Free field
CM4	ND/2024/09	30 Rolling Hills Phase II				Façade
CM9	ND/2024/10 & ND/2025/01	285B Wing Ping Tsuen				Free field
CM10	ND/2024/10 & ND/2025/01	291 Chau Tau Tsuen				Free field
CM11	ND/2024/10 & ND/2025/01	218 Chau Tau Tsuen				Free field
CM12	ND/2025/01	74 Pun Uk Tsuen				Free-field
CM13	ND/2025/01	Village house to the south of lamp post EA2021				Free-field
CM14	ND/2025/01	616 Siu Hom Tsuen				Façade
CM15	ND/2025/01	310 Wing Ping Tsuen				Free-field
CM16	ND/2025/01	Village House near Pak Shek Au				Free-field
CM19	ND/2025/01	Temporary Structure near Lok Ma Chau				Free-field

2.2.2 Monitoring Schedule for the Reporting Month

The schedule for impact noise monitoring during the reporting period is provided in Annex E2.

2.2.3 Results and Observations

Results for noise impact monitoring are summarised in Table 2.8.  Major noise sources during the noise monitoring included noise from use of Powered Mechanical Equipment (PME), tree felling, demolition and site formation works. The monitoring data and the graphical presentation are provided in Annex E3. 

Table 2.8  Summary of Construction Noise Monitoring Results in the Reporting Period

Monitoring Station	Average, dB(A), Leq (30 min) (b)	Range, dB(A), Leq (30 min)	Limit Level, dB(A), Leq (30 min)
CM1 ^(a)	69.8	68.9 - 71.0	75
CM3 ^(a)	51.3	49.9 - 52.4	75
CM4	46.0	42.6 - 47.6	75
CM9 ^(a)	65.4	64.0 - 66.4	75
CM10 ^(a)	61.6	59.0 - 64.7	75
CM11 ^(a)	58.4	57.2 - 59.6	75
CM12 ^(a)	54.4	51.8 - 55.1	75
CM13 ^(a)	63.7	62.6 - 64.8	75
CM14	74.4	74.0 - 74.7	75
CM15 ^(a)	70.2	69.6 - 70.5	75
CM16 ^(a)	58.9	56.4 - 60.2	75
CM19 ^(a)	64.8	63.8 - 65.3	75

Note(s):

(a) A correction of +3 dB(A) was made to the free field measurements.

No exceedance of Action and Limit Levels was recorded for construction noise 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.

2.3 Water Quality Monitoring

2.3.1 Monitoring Requirements and Equipment

Water quality impact monitoring was carried out to ensure that any deterioration of water quality was detected, and that timely action was taken to rectify the situation if the deterioration of water quality is caused by the Project.  Impact water quality monitoring was undertaken three days per week during the reporting period in accordance with the EM&A Manual.  Each water quality impact monitoring was scheduled such that the interval between two water quality impact monitoring was more than 36 hours to record representative water quality data throughout the week.

Two (2) replicate in-situ measurements and samples were collected at each monitored water depth of each designated monitoring stations.  Dissolved Oxygen (DO), pH value, salinity, temperature and turbidity were measured in-situ whereas the level of suspended solids (SS) were determined by SGS Hong Kong Limited which is a HOKLAS accredited laboratory.

The calculated Action and Limit Levels of water quality monitoring with reference to the Baseline Water Quality Monitoring Report are provided in Table 2.9.

Table 2.9 Calculated Action and Limit Levels for Water Quality

Parameter	Action Level	Limit Level
San Tin Eastern Main Drainage Channel (STEMDC) - Station D1’
DO in mg/L ^(a)	1.2 mg/L	1.2 mg/L
SS in mg/L ^(b), (c)	105 mg/L, or 120% of upstream control station’s (U1a) SS recorded on the same day	113 mg/L, or 130% of upstream control station's (U1a) SS recorded on the same day
Turbidity in NTU ^(b), (c)	97 NTU, or 120% of upstream control station’s (U1a) turbidity recorded on the same day	102 NTU, or 130% of upstream control station's (U1a) turbidity recorded on the same day
San Tin Western Main Drainage Channel (STWMDC) - Stations D2a, D2b’, D2c and D2d
DO in mg/L ^(a)	1.3 mg/L	1.1 mg/L
SS in mg/L ^(b) , (c)	38 mg/L, or 120% of upstream control stations’ (U2a and U2b) SS recorded on the same day	46 mg/L, or 130% of upstream control stations’ (U2a and U2b) SS recorded on the same day
Turbidity in NTU ^(b), (c)	42 NTU, or 120% of upstream control stations’ (U2a and U2b) turbidity recorded on the same day	52 NTU, or 130% of upstream control stations’ (U2a and U2b) turbidity recorded on the same day
Small Watercourses along Sam Tam Road - Station D7
DO in mg/L ^(a)	0.6 mg/L	0.6 mg/L
SS in mg/L ^(b)	5 mg/L	5 mg/L
Turbidity in NTU ^(b)	11 NTU	12 NTU
Small Watercourses near Mai Po Village - Station D8
DO in mg/L ^(a)	1.4 mg/L	1.2 mg/L
SS in mg/L ^(b)	7 mg/L	8 mg/L
Turbidity in NTU ^(b)	12 NTU	13 NTU

Note(s):

(a) For DO, non-compliance of the water quality limits occurs when monitoring result is lower than the limits.

(b) For SS and turbidity, non-compliance of the water quality limits occurs when monitoring result is higher than the limits

(c) For clarity, the exceedance of Action / Limit Levels for SS and turbidity is considered to occur when both the baseline percentile criteria (based on 95%-ile / 99%-ile of collected baseline data) and control station criteria (based on 120% / 130% of control station data collected on the same day during impact monitoring) are exceeded. In case more than one upstream control station is involved, the higher number would be considered as the control criteria. Exceeding either the baseline percentile criteria or control station criteria alone does not constitute the exceedance of the corresponding Action / Limit Levels.

The locations of the impact water quality monitoring station and monitoring requirements are summarised in Figure 2.3 and Table 2.10.

Subjected to the safety concern of the access path to station D2d arise from the private fish pond maintenance work, a joint site visit with the RSS, IEC and the Safety Officer from ND/2024/09 was conducted on 6 August 2026. The access to station D2d was confirmed unsafe for routine monitoring and alternative monitoring location for station D2d was also explored in the same visit. However, no suitable alternative monitoring location could be identified due to access constraints and absence of a practical and safety access route. Therefore, both RSS and IEC had no adverse comment for temporary suspension of station D2d under safety concern. The proposal for temporary suspension of station D2d and the supplementary information were submitted to EPD on 6 August 2026 and 17 August 2026, respectively.

Table 2.10    Locations of Impact Water Quality Monitoring Stations and Monitoring Requirements

Monitoring Station	Relevancy to Works Contract	Coordinates		Description	Parameters and Frequency	Monitoring Dates
		Easting	Northing
U1a’ ^(a)	ND/2024/10 & ND/2025/01	826821	838974	Upstream Station	In-situ measurements • DO (mg/L) • DO Saturation (%) • Salinity • Temperature (℃) • pH • Turbidity (NTU) Laboratory measurements • SS (mg/L) 3 days per week during the construction period of the relevant works contracts of the Project.	3, 5, 7, 10, 12, 14, 17, 19, 21, 24, 26, 28 and 31 August 2026
U1b’ ^(a)	ND/2024/10 & ND/2025/01	827146	840550	Upstream Station (Alternative Monitoring location of U1b)
G1a	ND/2024/10 & ND/2025/01	826686	839212	Gradient Station
G1b	ND/2024/10 & ND/2025/01	826472	839908	Gradient Station
G1c	ND/2024/10 & ND/2025/01	826339	840303	Gradient Station
G1d	ND/2024/10 & ND/2025/01	826316	840657	Gradient Station
D1’ ^(a)	ND/2024/10 & ND/2025/01	825363	841421	Impact Station
D1’T ^(b)	ND/2024/10 & ND/2025/01	825536	840985	Impact Station
U2a	ND/2024/09	826181	838334	Upstream Station		3, 5, 7, 10, 12, 14, 17, 19, 21, 24, 26, 28 and 31 August 2026
U2b’ ^(a)	ND/2024/09	825517	838767	Upstream Station (Alternative Monitoring location of U2b)
G2	ND/2024/09	825588	839518	Gradient Station
D2a	ND/2024/09	825200	839396	Impact Station
D2b’ ^(a)	ND/2024/09	824726	840168	Impact Station (Alternative Monitoring location of D2b)
D2c	ND/2024/09	824846	840373	Impact Station
D2d ^(c)	ND/2024/09	825239	839846	Impact Station
D7	ND/2024/09	824254	838831	Impact Station
D8	ND/2024/09	824188	839310	Impact Station

Note(s):

(a) EPD approved the alternative stations (U1a’, U1b’, D1’ U2b’ and D2b’) on 18 March 2026.

(b) Adjustment of water quality monitoring stations D1’T has been adopted as a temporary replacement of the original stations D1’ due to influence of the ongoing river maintenance works in San Tin Eastern Main Drainage Channel (STEMDC) since 11 February 2026. As no river maintenance works were observed in the reporting period, water quality monitoring was conducted at station D1’.

(c) Impact water quality monitoring at station D2d was temporary suspended since 7 August 2026 due to safety concerns of the access path to station D2d arises from the private fish pond maintenance works.

The equipment used in the impact water quality monitoring work is summarised in Table 2.11 below.  Copies of the calibration certificates are attached in Annex F1.

Table 2.11    impact Water Quality Monitoring Equipment

Parameters (Unit)	Equipment
In-situ Measurement
Dissolved Oxygen (mg/L and % of saturation)	[YSI]/ [ProDSS] (S/N: 19C102067/19C000245)
Salinity (ppt)
Temperature (°C)
pH
Turbidity (NTU)
Current Velocity (m/s)	雲境天合 LS300-B
Laboratory Analysis
Suspended Solids (SS) (mg/L)	Sample Container: 1L Clear Plastic Bottle

2.3.2 Monitoring Schedule for the Reporting Month

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

2.3.3 Results and Observations

A total of twenty-six (26) monitoring events for impact water quality monitoring were conducted at all designated monitoring stations in the reporting period. Impact water quality monitoring results and graphical presentations are provided in Annex F3. 

No Project-related Action or Limit level exceedance was recorded in the reporting period. A total of one (1) Limit Level exceedance was recorded for impact water quality monitoring, investigation was conducted, and all exceedances were confirmed to be not Project‑related and summarised in Table 2.12 below. Therefore, no action was thus required in accordance with the Event and Action Plan presented in Annex F4.

Table 2.12    Details of Exceedances Recorded for Water Quality Monitoring

Date	Monitoring Station	Parameter	Exceedance Level	Remarks
17 August 2026	D7	SS	Limit Level	The exceedances were unlikely caused by the construction of the Project as no construction activities that cause potential water quality impact were carried out near monitoring stations.

2.4 Ecological Monitoring

2.4.1 Egretry Monitoring Requirements

According to Sections 10.13.1.6 – 10.13.1.8 of the EIA Report and Sections 9.3.3.1 – 9.3.3.5 of the EM&A Manual of the Project, two active egretries, including Mai Po Lung Village (MPLV) Egretry and Mai Po Village (MPV) Egretry, were observed within / adjacent to Project boundary, and buffer area(s) of 100m from the footprint of both egretries were proposed (Figure 2.4).

Considering the condition, location and extent of egretry could change periodically with or without additional human disturbance, pre-construction surveys are necessary to confirm the latest boundary of the egretries before commencement of the construction works, and the 100m buffer area should be verified according to the latest site observation on the egretries. The pre-construction surveys for egretries were conducted monthly between March and September 2025 during breeding season. Two ardeid species, Chinese Pond Heron (Ardeola bacchus) and Little Egret (Egretta garzetta) were recorded in both egretries. Peak counts of 76 nests at MPV and 111 nests at MPLV Egretries were recorded respectively, which are comparable to the findings in the approved EIA report (84 nests at MPV and 86 nests at MPLV).  A total of eight major flight lines were identified at both egretries, where the flight path preference was similar to those recorded in the approved EIA report.  The extent of both egretries recorded during the pre-construction egretry survey is provided in Figure 2.4.

During the construction phase, egretry monitoring survey would be conducted monthly for the MPV Egretry and MPLV Egretry during breeding season (between March and early September) by qualified ecologist with at least 5 years of relevant working experience. Upon the completion of the enhancement work at the “Open Space”, egretry monitoring survey shall be continued monthly for the first three breeding seasons. The monitoring requirements for the egretry monitoring during the construction phase and upon the completion of the enhancement work at the “Open Space” shall be the same.

The implementation of seasonal control within the 100m buffer area should be confirmed (i.e. construction activities shall be avoided during the ardeid breeding period) during monitoring and no direct impact to the egretries shall be induced by construction works (except for the small area of encroachment as stated in the EIA Report).

2.4.2 Egretry Monitoring Methodology

2.4.2.1 egretry count

The location of the egretries and the vantage points for the flight path surveys are presented in Figure 2.5.  The egretry monitoring survey was undertaken on 10 August 2026 at MPLV and 17 August 2026 at MPV during the reporting period, respectively by qualified ecologist with at least 5 years of relevant working experience. The status of egretries and ardeid nesting activities were identified. Active nests, which was determined by the presence of incubating adults or chicks, was counted directly from vantage points along the edge of a colony with the use of binoculars or by the naked eye, depending on the proximity between the surveyor and the colony.

The species, abundance and number of nests were recorded, whilst the latest boundary of the egretries was updated during pre-construction survey, where appropriate. These data were compared with that recorded in the baseline.

The nest status (vacant or occupied), notable breeding behaviours (e.g. brooding, feeding of chicks), and presence of adult/juveniles were identified. In addition, the physical environment, including identification of trees that are supporting nests within or in close proximity to the egretries, were recorded as supplementary information during monitoring. 

2.4.2.2 flight path

Flight path surveys for the breeding ardeids were undertaken at the proposed vantages points for egretries (i.e. VP1A and VP1B for MPV Egretry, and VP2A and VP2B for MPLV Egretry respectively) (see Figure 2.6) for two hours in the early morning, starting about 15-30 minutes before sunrise, which is the peak period of bird activity. 

The flight path and flight height of ardeid individuals were followed by means of high-power binoculars to identify their landing locations, wherever possible. Where the ardeids fly out of sight prior to landing, the location at which they are lost from sight were recorded.

2.4.2.3 site condition

Any changes in site condition or disturbances detected or observed (e.g. tree-crown pruning works) within or in close proximity to the egretries, including both construction and non-construction related activities, during each monitoring were also recorded.

2.4.3 Results and Observations of Egretry Monitoring

At this stage, a specific triggering point for investigation of any significant decrease in breeding ardeid numbers has not yet been established. This is because the commencement programme and extent of construction works within and adjacent to the concerned egretries and their associated 100 m buffer areas have yet to be confirmed. Baseline information on ardeid breeding activity will continue to be collected through routine egretry monitoring in accordance with the EM&A Manual. Subject to confirmation of the construction schedule and availability of contract‑specific information, the need for and applicability of a triggering point, including its definition and investigation mechanism, will be reviewed and established if considered necessary at a later stage to ensure timely identification and assessment of any construction‑related impacts. The extent of the egretries recorded in the approved EIA (2012-2021 and 2022) and during the 2025 pre-construction survey is presented in Figure 2.7 for comparison.

2.4.3.1 MPV egretry

In the MPV egretry, no nesting or breeding activities of ardeids were recorded during the reporting period. No construction activities were observed at the egretry or within the 100m buffer area during the reporting period.    

2.4.3.2 MPLV egretry

In the MPLV egretry, nesting and breeding activities of ardeids were recorded on Ficus virens, Ficus benjamina, Ficus microcarpa, Melaleuca cajuputi subsp. cumingiana, and Peltophorum pterocarpum. Given the egretry is closely adjacent to the Castle Peak Road (San Tin Section), intensive human disturbance (e.g. traffic of large container trucks) were observed. No construction activities were observed at the egretry or within the 100m buffer area during the reporting period. Details of number of nests and abundance of adults and juveniles are presented in Table 2.13 while usage of flight paths and flight heights are provided in Table 2.14 and Table 2.15 respectively.

A new flight path towards southeast of egretry was observed during the reporting period, the updated flight paths of the egretry are presented in Figure 2.6.   

Table 2.13    number of nests and ardeids recorded at MPLV Egretry

Species	Number of Nests	Number of Adults	Number of Chicks/Juveniles
Little Egret (Egretta garzetta)	4	6	4
Chinese Pond Heron (Ardeola bacchus)	18	12	17

Table 2.14    usage of flight paths recorded at MPLV egretry

Flight Path	Number of Usage	Percentage
Flight Path 1	4	8.50%
Flight Path 2	10	21.30%
Flight Path 3	10	21.30%
Flight Path 4	10	21.30%
Flight Path 5	9	19.10%
Flight Path 6	0	0.00%
Flight Path 7	1	2.10%
Flight Path 8	3	6.40%
Flight Path 9	0	0.00%
Total	47	100.0%

Table 2.15    usage of flight paths and flight heights recorded at mpLv egretry

Flight height (m)	Flight Path 1	Flight Path 2	Flight Path 3	Flight Path 4	Flight Path 5	Flight Path 6	Flight Path 7	Flight Path 8	Flight Path 9
0-10	2	9	10	9	9	0	1	3	0
11-20	2	1	0	1	0	0	0	0	0
21-30	0	0	0	0	0	0	0	0	0
Total	4	10	10	10	9	0	1	3	0

2.4.4 Flight Corridor Monitoring Requirements

According to Section 10.13.1.13 of the EIA Report and Section 9.3.5 of the EM&A Manual of the Project, bird usage of the flight corridor should be monitored to ensure no adverse impacts arise from construction activities. Construction phase monitoring should be conducted, focusing on the composition of bird species and their abundance using the flight corridor, observed from suitable vantage point(s) such as the Lok Ma Chau (LMC) Lookout.

The 12-month pre-construction baseline surveys were conducted monthly from December 2024 to November 2025, using LMC Lookout as the designated vantage point. To ensure comparable results, the construction phase monitoring will also use Lok Ma Chau Lookout as the vantage point (Figure 2.8).

2.4.5 Flight Corridor Monitoring Methodology

The location of the flight corridor and the vantage point for the monitoring surveys at LMC Lookout are presented in Figure 2.8. The flight corridor monitoring was undertaken on 24 August 2026.

The ecological surveyor was stationed at a fixed point (see Figure 2.8) for two hours in the early morning, starting about 30 minutes before sunrise, which is the peak period of bird activity. During the survey, the surveyor will scan the 300m corridor area to spot any birds flying across the corridor. Binoculars and/or telescope will be used to aid in the identification of bird species and numbers.

For each observation of birds in flight, the number, species, time, flight direction and height above ground will be recorded. Height above the ground will be estimated in relation to the level of LMC Loop and adjacent fishpond area, and/or the location of the surveyor. Given the difficulty of accurately measuring height above ground from a distance, four height classes will be used: 0-10m, 11-20m, 21-30m and 30m or above. Existing infrastructures, such as buildings, lampposts and the hillock near Ha Wan Tsuen Road, will be used as reference points to help ensure higher accuracy in height measurement during the survey.

Additionally, any special observations that could aid in impact identification, such as high aggregation of birds in particular locations, will also be recorded.

2.4.6 Results and Observations of Flight Corridor Monitoring

A total of 28 individuals of five bird species were recorded traversing the flight corridor during the survey. The recorded species included Little Egret (Egretta garzetta), Chinese Pond Heron (Ardeola bacchus), Grey Heron (Ardea cinerea), Great Egret (Ardea alba), and Black Kite (Milvus migrans). No noisy construction activities were observed within the flight corridor during the reporting period.

Bird movements were recorded along Flight Path 1 and Flight Path 2, with the majority of movements concentrated along Flight Path 1. Details of the abundance of birds recorded are presented in Table 2.16, while usage of flight paths (Number of Individuals) and flight heights are provided in Table 2.17 and Table 2.18, respectively.   Flight Paths Observed at the 300m Flight Corridor are presented in Figure 2.9.

Table 2.16    number of Birds recorded at the Flight Corridor

Species	Number of Individuals
Little Egret (Egretta garzetta)	19
Black Kite (Milvus migrans)	5
Chinese Pond Heron (Ardeola bacchus)	2
Grey Heron (Ardea cinerea)	1
Great Egret (Ardea alba)	1
Total	28

Table 2.17    usage of flight paths recorded at the Flight Corridor

Flight Path	Flight Path Usage (Number of Individuals)	Percentage
Flight Path 1	26	92.9%
Flight Path 2	2	7.1%
Total	28	100.0%

Table 2.18    usage of flight paths and flight heights recorded at the Flight Corridor

Flight height (m)	Flight Path 1 (Number of Individuals)	Flight Path 2 (Number of Individuals)
0-10	1	0
11-20	16	0
21-30	9	0
>30	0	2
Total	26	2

2.5 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 under the Project.  In the reporting period, five (5) site inspections were carried out on 3, 10, 17, 26 and 31 August 2026 for ND/2024/09, four (4) site inspections were carried out on 4, 11, 20 and 27 August 2026 for ND/2024/10 and four (4) site inspections were carried out on 6, 13, 20 and 26 August 2026 for ND/2025/01.

No site inspection was conducted by EPD in the reporting period.

Key observations during the site inspections are summarized in Table 2.19.

Table 2.19    Key Observations Identified during the site inspection in this Reporting Month

Inspection Date	Environmental Observations	Follow-up Status
ND/2024/09
3 August 2026	• No particular observation.	· N/A
10 August 2026	• The contractor was reminded to provide watering regularly.	• Watering have been provided regularly.
17 August 2026	• The Contractor was reminded to provide NRMM label for breaker. Reminder: • The contractor was reminded to provide regular watering for dusty works.	• The NRMM label has been provided for breakers.
26 August 2026	• The contractor was reminded to provide drip tray/ tarpaulin for breaker head.	• Breaker head has been removed off site.
31 August 2026	• The contractor was reminded to provide drip tray for chemical container Reminder: • The contractor was reminded to provide sandbags for gullies.	• A drip tray has been provided for chemical container.
ND/2024/10
4 August 2026	• No particular observation. • The contractor was reminded to clear the accumulated mud on the access road regularly to prevent muddy water generated under heavy rain.	• N/A
11 August 2026	• No particular observation. • The contractor was reminded to cover the stockpiles properly when idle.	· N/A
20 August 2026	• CNP shall be displayed at the appropriate point at the site boundary.	• CNPs were displayed at the site entries.
27 August 2026	• No particular observation. • The contractor was reminded to collect and treat the stagnant water properly on site safter heavy rain.	· N/A
ND/2025/01
6 August 2026	• The contractor was reminded to place NRMM label on excavator.	· The excavator has left the site.
13 August 2026	• The Contractor was reminded to provide hoarding along site boundary. Reminder: • The contractor was reminded to provide regular watering along haul road.	· The item is pending in the reporting period.
20 August 2026	• The Contractor was reminded to provide drip tray for chemical container.	· The works area has been cleared.
26 August 2026	• The contractor was reminded to keep site tidiness properly. Reminder: • The contractor was reminded to provide mitigation measures properly for the drainage channel.	· Housekeeping has been carried out immediately.

2.6 Waste Management

Waste generated from the Works Contracts of the Project include inert construction and demolition (C&D) materials and non-inert C&D wastes. Sorting of C&D materials was carried out on site. Sufficient numbers of receptacles were available for general refuse collection and sorting.

Reference has been made to the waste flow tables prepared by the Contractors.  The quantities of different types of waste are summarised in Table 2.20.  Details of cumulative waste management data are presented as a waste flow table in Annex H.

Table 2.20    Quantities of Waste Generated in Reporting Period

Month	Contract No.	Inert C&D Materials ^(a) (b) (m^3)	Imported Fill ^(c) (m^3)	Inert Construction Waste Reused ^(d) (m^3)	Non-inert Construction Waste ^(e)(tonnes)	Recyclable Materials ^(f) (tonnes)	Chemical Waste (tonnes)
August 2026	ND/2024/09	0.00	0.00	0.00	1102.79	0.020	0.00
	ND/2024/10	0.00	0.00	0.00	36.20	0.000	0.00
	ND/2025/01	0.00	6083.77	0.00	1559.35	2.170	0.00
	Sub-total	0.00	6083.77	0.00	2698.34	2.19	0.00

Note:

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

(b) The conversion factor for inert C&D Materials is 2.4 tonnes/m³.

(c) Imported materials from any source outside of the Project.

(d) Reuse of inert construction waste generated under the Project.

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

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

2.7 Implementation Status of Environmental Mitigation Measures

A summary of the Environmental Mitigation Implementation Schedule is presented in Annex I.  The necessary mitigation measures were implemented properly for the Project.

2.8 Summary oF Complaints, Notification OF Summons AND Successful Prosecutions

There was no environmental complaint, notification of summons or successful prosecution recorded in the reporting period. Statistics on environmental complaint, notification of summons and successful prosecution for this project summarized in Table 2.21.

Table 2.21    Statistics on environmental complaint, notification of summons or Successful prosecution

Reporting Period	Complaints	Notification of summons	Successful prosecution
This reporting period (August 2026)	0	0	0
From commencement date of construction to this reporting period	1	0	0

3. Future Key Issues

3.1 Construction Programme for the coming Three Months

Works to be undertaken in the next three months are summarised in Table 3.1 below, together with key issues and the key mitigation measures.

Table 3.1     Major Construction Works in the Next Three Months

Construction Works to be Undertaken	Key Issues	Key Mitigation Measures
Contract No. ND/2024/09
• Site Formation Works (Area C) • Site Formation Works (Area D2) • Site Formation Works (DRE Site) • Operation of Shredding Facilities • Reprofiling Works at Gei Wai 14 • Tree Felling Works • Haul road (East & West) construction • Arsenic soil treatment • Asbestos Abatement Works	• Dust emission • Handling and storage of Asbestos • Handling and storage of C&D materials • Handling contaminated soil • Noise from use of PME • Emission of dark smoke from PMEs • Proper discharge of wastewater • Prevention and proper discharge of surface runoff • Tree protection	• Good site practices • Regular water spraying on stockpiles • Provide tarpaulin sheets coverage on stockpiles and reuse of C&D materials as far as practicable • Use of QPME and noise barrier/acoustic mat/enclosure • 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 • Carry out land remediation in accordance with the approved EIA Land Contamination Assessment. • Properly house and cover excavated contaminated materials and exposed contaminated surfaces to prevent contaminated runoff. • Prohibit open stockpiling of contaminated materials. • Collect and manage all contaminated runoff and wastewater generated from decontamination works. • Divert contaminated wastewater to suitable wastewater treatment facilities (WTF) as required. • Equip WTF with appropriate treatment processes (e.g. oil interceptor, activated carbon) to reduce pollutants to acceptable levels and remove prohibited substances (e.g. TPH) to undetectable levels. • Ensure all treated effluent complies with TM‑DSS requirements. • Discharge treated effluent to foul sewers or tanker off-site for proper disposal. • Ensure all asbestos handled by qualified specialists
Contract No. ND/2024/10
• Construction for Box Culvert • Construction of Sewerage Pipe • Construction of containment wall • Construction of Site Formation	• Dust emission • Handling and storage of C&D materials • Noise from use of PME • Emission of dark smoke from PMEs • Proper discharge of wastewater • Prevention and proper discharge of surface runoff • Tree protection	• Good site practices • Regular water spraying on stockpiles • Provide tarpaulin sheets coverage on stockpiles and reuse of C&D materials as far as practicable • Use of QPME and noise barrier/acoustic mat/enclosure • 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. ND/2025/01
• Site clearance and demolition works • Tree felling works • Ground investigation works • Environmental ground investigation works for contaminated soil • Asbestos abatement works • Ground improvement works (Part 1C) • Site formation works • Construction of temporary high arsenic containing (HAC) soil treatment facility • Construction of box culvert	• Dust emission • Handling and storage of C&D materials • Noise from use of PME • Emission of dark smoke from PMEs • Proper discharge of wastewater • Prevention and proper discharge of surface runoff Tree protection • Handling and storage of Asbestos • Handling contaminated soil	• Good site practices • Regular water spraying on stockpiles • Provide tarpaulin sheets coverage on stockpiles and reuse of C&D materials as far as practicable • Use of QPME and noise barrier/acoustic mat/enclosure • 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 • Carry out land remediation in accordance with the approved EIA Land Contamination Assessment. • Properly house and cover excavated contaminated materials and exposed contaminated surfaces to prevent contaminated runoff. • Prohibit open stockpiling of contaminated materials. • Collect and manage all contaminated runoff and wastewater generated from decontamination works. • Divert contaminated wastewater to suitable wastewater treatment facilities (WTF) as required. • Equip WTF with appropriate treatment processes (e.g. oil interceptor, activated carbon) to reduce pollutants to acceptable levels and remove prohibited substances (e.g. TPH) to undetectable levels. • Ensure all treated effluent complies with TM‑DSS requirements. • Discharge treated effluent to foul sewers or tanker off-site for proper disposal. • Ensure all asbestos handled by qualified specialists

The ET will keep track on the construction works to confirm compliance with environmental requirements and the proper implementation of all necessary mitigation measures.  The ET will also recommend to the Contractors about the environmental toolbox topics on the abovementioned key issues for the next reporting period.

3.2 Monitoring Schedule for the Future Three Months

The tentative schedules for environmental monitoring in September, October and November 2026 are provided in Annex J. New works area expansion under ND/2025/01 was noted during the reporting period. The corresponding additional air quality, noise and water quality monitoring stations for the new works area under ND/2025/01 summarized in Table 3.2 to Table 3.4. Commencement of impact monitoring would be subject to the actual construction activity from ND/2025/01. Detailed information for the monitoring will be reported in the subsequent monthly reports.

Table 3.2     summary table for the Additional air quality monitoring stations for the Expanded works area under ND/2025/01

Monitoring Station	Location
M01	Lok Ma Chau Village
M08	Yan Shau Wai

Table 3.3     summary table for the Additional Noise monitoring stations for the Expanded works area under ND/2025/01

Monitoring Station	Location
CM8	80A Yan Shau Wai
CM20	301 Lok Ma Chau

Table 3.4     summary table for the Additional water quality monitoring stations for the Expanded works area under ND/2025/01

Monitoring Station	Location
D5	Small Watercourses at Sam Po Shue

4. Conclusion and Recommendations

This EM&A Report presents the findings of the EM&A activities undertaken for the Project during the period of August 2026 in accordance with the EM&A Manual and the requirements of the EPs.  The environmental monitoring, site inspection, environmental complaint handling and EM&A reporting in works areas under Contract Nos. ND/2024/09, ND/2024/10 and ND/2025/01 were covered and carried out.

Air quality (1-hour RSP, 24-hour rolling average RSP and 24-hour rolling average FSP), noise (impact and baseline), water quality and ecological monitoring were carried out in the reporting period.

The monitoring results for impact air quality monitoring complied with the Action/ Limit levels in the reporting period.

The monitoring results for impact noise monitoring complied with the Action/ Limit levels in the reporting period.

No Project-related Action or Limit level exceedance was recorded in the reporting period. A total of one (1) Limit Level exceedance was recorded for impact water quality monitoring, investigation was conducted, and all exceedances were confirmed to be not Project‑related. Therefore, no further action under the Event and Action Plan was required.

Environmental site inspections were carried out during the reporting period.

Recommendations on remedial actions were given to the Contractors for the deficiencies identified during the site inspections.

There was no environmental complaint notification of summons or prosecution recorded in the reporting period.

The ET will keep track on the construction works to confirm compliance with environmental requirements and the proper implementation of all necessary mitigation measures.