Contents

Executive Summary  1

Breaches of Action and Limit Levels for Air Quality  1

Breaches of Action and Limit Levels for Noise  2

Breaches of Action and Limit Levels for Water Quality  2

Reporting Change  2

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  5

1.6   Status of other Statutory Environmental Requirement  7

2.    Monitoring Results  8

2.1   Air Quality Monitoring  8

2.1.1    Monitoring Requirements and Equipment 8

2.1.2    Results and Observations  8

2.2   Noise Monitoring  16

2.2.1    Monitoring Requirements and Equipment 16

2.2.2    Results and Observations  16

2.3   Water Quality Monitoring  17

2.3.1    Monitoring Requirements and Equipment 17

2.3.2    Results and Observations  20

2.4   EM&A Site Inspection  21

2.5   Waste Management  23

2.6   Implementation Status of Environmental Mitigation Measures  24

2.7   Summary oF Complaints, Notification OF Summons AND Successful Prosecutions  24

3.    comments Conclusion and Recommendations  25

Annex A      PROJECT ORGANISATION

Annex B      Construction Programme

Annex C1     WIND CONDITIONS

Annex C2     The graphical plots of the trends (AIR QUALITY MONITORING)

Annex c3     Event and action plan

Annex D1    The graphical plots of the trends (Noise MONITORING)

annex d2    event and action plan

Annex E1     The graphical plots of the trends (water quality MONITORING)

Annex E2     Event and action plan

Annex F      Waste Flow Table

Annex G1    Environmental Mitigation Implementation Schedule

Annex G2    Mitigation Measures Implementation Status

             

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  5

Table 2.1     Action and Limit Levels for Air Quality (Dust) 8

Table 2.2     Air Quality Monitoring Details  8

Table 2.3     Summary of 1-Hour RSP Monitoring Results in the Reporting Period  9

Table 2.4     Summary of 24-hour rolling average RSP Monitoring Results in the Reporting Period  9

Table 2.5     Summary of 24-hour rolling average FSP Monitoring Results in the Reporting Period  10

Table 2.6     Summary of EXCEEDANCES RECORDED FOR AIR QUALITY MONITORING in the reporting period  11

Table 2.7     Action and Limit Levels for Construction noise  16

Table 2.8     Noise Monitoring Details  16

Table 2.9     Summary of Construction Noise Monitoring Results in the Reporting Period  17

Table 2.10    Calculated Action and Limit Levels for Water Quality  17

Table 2.11    Locations of Impact Water Quality Monitoring Stations and Monitoring Requirements  19

Table 2.12    SUMMARY OF impact water quality MONITORING RESULTS IN THE REPORTING PERIOD  20

Table 2.13    Summary of EXCEEDANCES RECORDED FOR water QUALITY MONITORING in the reporting period  21

Table 2.14    Key Observations Identified during the site inspection in this Reporting Month  21

Table 2.15    Comparison of Estimated Amount of Waste Generated for Construction of the Project and Actual Amount Generated during the Reporting Period  24

 

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      Locations of Water Quality Monitoring Stations

 

Executive Summary

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

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

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

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                                    13 sessions

•       ND/2024/10                                    13 sessions

Water Quality Monitoring

•       ND/2024/09                                    38 sessions

•       ND/2024/10                                    38 sessions

Environmental Site Inspection

•       ND/2024/09                                    13 sessions

•       ND/2024/10                                    13 sessions

 

During the reporting period, the frequency of all monitoring works followed the requirements of the EM&A Manual, and all equipment used had valid calibration certificates. The weather conditions were predominantly sunny and partly cloudy, providing generally favorable circumstances for conducting impact monitoring of air quality, noise, and water quality.

Due to a power outage at monitoring station M04 between 01:00 and 11:00 on 15 December 2025, air quality monitoring at monitoring station M04 was temporarily suspended during this period.

Subject to safety concerns arising from unleashed dogs along the access path to U1a, an alternative monitoring location (U1a’) downstream of U1a was selected on 12 December 2025.

Subject to the influence of ongoing river maintenance works in the San Tin Eastern Main Drainage Channel (STEMDC) affecting access and monitoring conditions at Station D1’, a temporary monitoring location (D1’T) along the same drainage channel system was adopted on 11 February 2026.

Breaches of Action and Limit Levels for Air Quality

No Project-related Action or Limit level exceedance was recorded in the reporting period. A total of four (4) Action Level and eighty‑one (81) Limit Level exceedances were recorded for impact air 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.

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 two (2) Action Level and five (5) Limit Level exceedances were 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.

 


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. Two (2) works contracts, ND/2024/09 and ND/2024/10, are active in this reporting period.  The construction of ND/2024/09 commenced on 29 September 2025, and the construction of ND/2024/10 commenced on 18 September 2025. 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

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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 Quarterly EM&A Summary Report for the Project which summarises the key findings of the EM&A programme during the reporting period from December 2025 to February 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

San Tin Technopole Project hotline

--

--

3152 3537

Environmental Team (ET)

(ERM-Hong Kong, Limited)(a)

ET Leader

Terence Fong

2271 3156

 

ET Leader(a)

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)

Construction Manager

K. K. Yuen

9498 1213

Site Agent

Wilson Chan

9656 8865

Sub Agent

Paul So

5989 0614

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

(a)   CEDD notified EPD on 6 February that Mr. Raymond Chow would replace Mr. Terence Fong as the ET Leader with effect from 1 March 2026.

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

December 2025

January 2026

February 2026

Contract No. ND/2024/09

•      Topographic Survey

•      Ground Investigation Work

•      Wetland Enhancement Works

•      Tree Felling

•      Demolition Works

•      Site Formation Works

•      Trial pit excavation

•      Trash fish stocking at Ponds 1, 2, 3

•      Site Formation works at Portion 1D-1 (Big Forest)

•      Site Formation works at Area C2 (Soccer Field)

•      Tree surveying works

•      Tree felling works

•      Trial pit for gas main (cycle track - western side)

•      Site Formation works at Portion 1D-1 (Big Forest)

•      Site Formation works at Area C2 (Soccer Field)

•      Tree felling works

•      Pilot-scale Trial for Arsenic soil treatment

•      Set up for shredding facility

Contract No. ND/2024/10

•      Ground Investigation Work

•      Construction for Box Culvert

•      Tree Felling

•      Ground Investigation Work

•      Construction for Box Culvert

•      Tree Felling

•      Ground Investigation Work

•      Construction for Box Culvert

•      Tree Felling

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 and ND/2024/10, monitoring conducted continuously

Noise

Baseline Monitoring

The results of baseline noise monitoring for Contract Nos. ND/2024/09 and ND/2024/10 were reported in Baseline Monitoring Report and submitted to EPD under the EM&A Manual Section 16.3 and EP Condition 3.3.

Impact Monitoring

On-going for Contract Nos. ND/2024/09 and ND/2024/10, monitoring conducted once per week

Water Quality

Baseline Monitoring

The results of baseline water quality monitoring for Contract Nos. ND/2024/09 and ND/2024/10 were reported in Baseline Monitoring Report and submitted to EPD under the EM&A Manual Section 16.3 and EP Condition 3.3.

Impact Monitoring

On-going for Contract Nos. ND/2024/09 and ND/2024/10, 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 in November 2025. To be conducted when construction activities occur within 400m from the contiguous pond / wetland habitats on the northern portion of the Project area.

Wetland Compensation Monitoring

(Monitoring on Wetland Enhancement)

The 12-month baseline monitoring was completed under NDO 08/2024 in November 2025. 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 on-going at the original roosting sites until commencement of tree felling works, a standalone report for the survey will be prepared.

Egretry Monitoring

To be conducted monthly during breeding season (between March and early September).

Flight Corridor Monitoring

To be conducted when construction activities occur within this flight corridor.

Woodland Compensation Monitoring

To be conducted after completion of compensatory planting.

Post-transplantation / Post-seedling Planting Monitoring of Flora Species of Conservation Importance

To be conducted after the transplantation / seedling planting.

Post-translocation Monitoring of Fauna Species of Conservation Importance

To be conducted after the translocation.

Pre-construction Site Check and Nest Control

To be conducted in breeding season (March to July). The associated nest control measures to be conducted in non-breeding season (August to February) after pre-construction survey.

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

 

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. Details of the EP submissions status shall be referred to corresponding EM&A reports.

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 corresponding EM&A monthly report.  No non-compliance with environmental statutory requirements was recorded in the reporting period.

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/m3

Not applicable

24-hour RSP (rolling average)

Not applicable

100 μg/m3

24-hour FSP (rolling average)

Not applicable

50 μg/m3

 

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.  The copies of the calibration certificates for the onsite air sensors at the monitoring stations and the transfer standards shall be referred to corresponding Monthly EM&A reports.

Table 2.2  Air Quality Monitoring Details

Monitoring Station

Relevancy to Works Contract

Location

Equipment

M03

ND/2024/10

Pun Uk Tsuen

MAS-Dust

(S/N: dev9204Z250700007)

M04

ND/2024/10

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

Wing Ping Tsuen

MAS-Dust

(S/N: dev9204Z250700005)

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

During the reporting period, weather conditions were predominantly sunny and partly cloudy, providing generally favorable circumstances for conducting impact monitoring of air quality. Wind conditions during the reporting period extracted from the Hong Kong Observatory (HKO)’s weather station at Wetland Park are presented in Annex C1.

The monitoring data for 1-hour RSP, 24-hour rolling average RSP and 24-hour rolling average FSP concentrations in the reporting period are summarized 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 graphical plots of the trends of monitored parameters (the last month of the previous quarter and the present quarter) are provided in Annex C2. 

Due to a power outage at monitoring station M04 between 01:00 and 11:00 on 15 December 2025, air quality monitoring at monitoring station M04 was temporarily suspended during this period.

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

Monitoring Station

Average (µg/m3)

Range (µg/m3)

Action Level (µg/m3)

Limit Level (µg/m3)

M03

17.3

1.0 - 65.7

150

Not applicable

M04(a)

27.1

3.6 - 79.5

150

Not applicable

M06

36.4

3.3 - 183.1

150

Not applicable

M09

32.7

5.4 - 100.3

150

Not applicable

M11

38.2

14.8 - 105.6

150

Not applicable

M13

35.2

2.7 - 111.0

150

Not applicable

M14

27.2

1.8 - 98.7

150

Not applicable

M15a

31.8

1.2 - 149.7

150

Not applicable

(a)   Due to a power outage at monitoring station M04 between 01:00 and 11:00 on 15 December 2025, no 1-hour RSP data was recorded during this period.

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

Monitoring Station

Average (µg/m3)

Range (µg/m3)

Action Level (µg/m3)

Limit Level (µg/m3)

M03

17.5

6.3 - 37.0

Not applicable

100

M04(a)

27.2

11.6 - 43.6

Not applicable

100

M06

36.6

11.4 - 68.5

Not applicable

100

M09

32.8

12.7 - 58.3

Not applicable

100

M11

38.4

22.4 - 74.0

Not applicable

100

M13

35.4

12.2 - 64.4

Not applicable

100

M14

27.4

9.1 - 50.1

Not applicable

100

M15a

32.0

7.1 - 87.9

Not applicable

100

(a)   Due to a power outage at monitoring station M04 between 01:00 and 11:00 on 15 December 2025, no 24-hour RSP data was recorded for the period from 01:00 on 15 December to 09:00 on 16 December 2025.

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

Monitoring Station

Average (µg/m3)

Range (µg/m3)

Action Level (µg/m3)

Limit Level (µg/m3)

M03

14.3

5.1 - 29.8

Not applicable

50

M04(a)

19.5

7.2 - 39.3

Not applicable

50

M06

22.1

6.2 - 55.8

Not applicable

50

M09

23.1

6.9 - 53.7

Not applicable

50

M11

27.4

14.5 - 42.3

Not applicable

50

M13

22.6

6.0 - 54.6

Not applicable

50

M14

19.2

5.3 - 39.7

Not applicable

50

M15a

23.0

6.4 - 56.1

Not applicable

50

(b)   Due to a power outage at monitoring station M04 between 01:00 and 11:00 on 15 December 2025, no 24-hour FSP data was recorded for the period from 01:00 on 15 December to 09:00 on 16 December 2025.

 

No Project-related Action or Limit level exceedance was recorded in the reporting period. A total of four (4) Action Level and eighty‑one (81) Limit Level exceedances were recorded for impact air 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 in accordance with the Event and Action Plan presented in Annex C3. Details of exceedances recorded in the reporting period were summarized in Table 2.6 below. 


Table 2.6  Summary of EXCEEDANCES RECORDED FOR AIR QUALITY MONITORING in the reporting period

Month

Monitoring Station

Parameter

Exceedance Level

No. of exceedance(s)

Date & Time period

December 2025

M06

24-hour rolling average FSP

Limit Level

8

29 Dec 2025 17:00 – 30 Dec 2025 16:59

29 Dec 2025 18:00 – 30 Dec 2025 17:59

29 Dec 2025 19:00 – 30 Dec 2025 18:59

29 Dec 2025 20:00 – 30 Dec 2025 19:59

29 Dec 2025 21:00 – 30 Dec 2025 20:59

29 Dec 2025 22:00 – 30 Dec 2025 21:59

29 Dec 2025 23:00 – 30 Dec 2025 22:59

30 Dec 2025 00:00 – 30 Dec 2025 23:59

 

M06

24-hour rolling average FSP

Limit Level

5

30 Dec 2025 01:00 – 31 Dec 2025 00:59

30 Dec 2025 02:00 – 31 Dec 2025 01:59

30 Dec 2025 03:00 – 31 Dec 2025 02:59

30 Dec 2025 04:00 – 31 Dec 2025 03:59

30 Dec 2025 05:00 – 31 Dec 2025 04:59

January 2026

M06

1-hour RSP

Action Level

1

10 Jan 2026 18:00 - 10 Jan 2026 18:59

 

M06

1-hour RSP

Action Level

1

12 Jan 2026 19:00 - 12 Jan 2026 19:59

 

M06

1-hour RSP

Action Level

1

13 Jan 2026 19:00 - 13 Jan 2026 19:59

 

M06

1-hour RSP

Action Level

1

20 Jan 2026 23:00 – 20 Jan 2026 23:59

 

M06

24-hour rolling average FSP

Limit Level

2

27 Jan 2026 08:00 – 28 Jan 2026 07:59

27 Jan 2026 09:00 – 28 Jan 2026 08:59

 

M09

24-hour rolling average FSP

Limit Level

7

23 Jan 2026 18:00 – 24 Jan 2026 17:59

23 Jan 2026 19:00 – 24 Jan 2026 18:59

23 Jan 2026 20:00 – 24 Jan 2026 19:59

23 Jan 2026 21:00 – 24 Jan 2026 20:59

23 Jan 2026 22:00 – 24 Jan 2026 21:59

23 Jan 2026 23:00 – 24 Jan 2026 22:59

24 Jan 2026 00:00 – 24 Jan 2026 23:59

 

M09

24-hour rolling average FSP

Limit Level

5

24 Jan 2026 01:00 – 25 Jan 2026 00:59

24 Jan 2026 02:00 – 25 Jan 2026 01:59

24 Jan 2026 03:00 – 25 Jan 2026 02:59

24 Jan 2026 04:00 – 25 Jan 2026 03:59

24 Jan 2026 05:00 – 25 Jan 2026 04:59

 

M13

24-hour rolling average FSP

Limit Level

7

23 Jan 2026 18:00 – 24 Jan 2026 17:59

23 Jan 2026 19:00 – 24 Jan 2026 18:59

23 Jan 2026 20:00 – 24 Jan 2026 19:59

23 Jan 2026 21:00 – 24 Jan 2026 20:59

23 Jan 2026 22:00 – 24 Jan 2026 21:59

23 Jan 2026 23:00 – 24 Jan 2026 22:59

24 Jan 2026 00:00 – 24 Jan 2026 23:59

 

M13

24-hour rolling average FSP

Limit Level

9

24 Jan 2026 01:00 – 25 Jan 2026 00:59

24 Jan 2026 02:00 – 25 Jan 2026 01:59

24 Jan 2026 03:00 – 25 Jan 2026 02:59

24 Jan 2026 04:00 – 25 Jan 2026 03:59

24 Jan 2026 05:00 – 25 Jan 2026 04:59

24 Jan 2026 06:00 – 25 Jan 2026 05:59

24 Jan 2026 07:00 – 25 Jan 2026 06:59

24 Jan 2026 08:00 – 25 Jan 2026 07:59

24 Jan 2026 09:00 – 25 Jan 2026 08:59

 

M13

24-hour rolling average FSP

Limit Level

7

27 Jan 2026 04:00 – 28 Jan 2026 03:59

27 Jan 2026 05:00 – 28 Jan 2026 04:59

27 Jan 2026 06:00 – 28 Jan 2026 05:59

27 Jan 2026 07:00 – 28 Jan 2026 06:59

27 Jan 2026 08:00 – 28 Jan 2026 07:59

27 Jan 2026 09:00 – 28 Jan 2026 08:59

27 Jan 2026 10:00 – 28 Jan 2026 09:59

 

M15a

24-hour rolling average FSP

Limit Level

14

12 Jan 2026 11:00 – 13 Jan 2026 10:59

12 Jan 2026 12:00 – 13 Jan 2026 11:59

12 Jan 2026 13:00 – 13 Jan 2026 12:59

12 Jan 2026 14:00 – 13 Jan 2026 13:59

12 Jan 2026 15:00 – 13 Jan 2026 14:59

12 Jan 2026 16:00 – 13 Jan 2026 15:59

12 Jan 2026 17:00 – 13 Jan 2026 16:59

12 Jan 2026 18:00 – 13 Jan 2026 17:59

12 Jan 2026 19:00 – 13 Jan 2026 18:59

12 Jan 2026 20:00 – 13 Jan 2026 19:59

12 Jan 2026 21:00 – 13 Jan 2026 20:59

12 Jan 2026 22:00 – 13 Jan 2026 21:59

12 Jan 2026 23:00 – 13 Jan 2026 22:59

13 Jan 2026 00:00 – 13 Jan 2026 23:59 

 

M15a

24-hour rolling average FSP

Limit Level

10

13 Jan 2026 01:00 – 14 Jan 2026 00:59

13 Jan 2026 02:00 – 14 Jan 2026 01:59

13 Jan 2026 03:00 – 14 Jan 2026 02:59

13 Jan 2026 04:00 – 14 Jan 2026 03:59

13 Jan 2026 05:00 – 14 Jan 2026 04:59

13 Jan 2026 06:00 – 14 Jan 2026 05:59

13 Jan 2026 07:00 – 14 Jan 2026 06:59

13 Jan 2026 08:00 – 14 Jan 2026 07:59

13 Jan 2026 09:00 – 14 Jan 2026 08:59

13 Jan 2026 10:00 – 14 Jan 2026 09:59

 

M15a

24-hour rolling average FSP

Limit Level

7

18 Jan 2026 17:00 – 19 Jan 2026 16:59

18 Jan 2026 18:00 – 19 Jan 2026 17:59

18 Jan 2026 19:00 – 19 Jan 2026 18:59

18 Jan 2026 20:00 – 19 Jan 2026 19:59

18 Jan 2026 21:00 – 19 Jan 2026 20:59

18 Jan 2026 22:00 – 19 Jan 2026 21:59

18 Jan 2026 23:00 – 19 Jan 2026 22:59

February 2026

N/A

N/A

N/A

N/A

N/A

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 2.7 below.

Table 2.7  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.

 

Noise monitoring was performed using sound level meter at the designated monitoring stations provided in Table 2.8 and Figure 2.2.  The copies of the calibration certificates for the equipment shall be referred to corresponding Monthly EM&A reports.

Table 2.8  Noise Monitoring Details

Monitoring Station

Relevancy to Works Contract

Location

Parameter and Frequency

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

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

285B Wing Ping Tsuen

Free field

CM10

ND/2024/10

291 Chau Tau Tsuen

Free field

CM11

ND/2024/10

218 Chau Tau Tsuen

Free field

2.2.2  Results and Observations

During the reporting period, weather conditions were predominantly sunny and partly cloudy, providing generally favorable circumstances for conducting impact monitoring of noise. Results for noise monitoring are summarised in Table 2.9.  Major noise sources during the noise monitoring included noise from use of Powered Mechanical Equipment (PME) for pile wall construction, tree felling, demolition and site formation works. The graphical plots of the trends of monitored parameters (the last month of the previous quarter and the present quarter) are provided in Annex D1. 

Table 2.9  Summary of Construction Noise Monitoring Results in the Reporting Period

Monitoring Station

Average, dB(A),
Leq (30 min)

Range, dB(A),

Leq (30 min)

Limit Level, dB(A),

Leq (30 min)

CM1 (a)

70.0

68.4 - 71.3

75

CM3 (a)

50.5

46.7 - 53.3

75

CM4

44.6

41.0 - 49.1

75

CM9 (a)

64.2

62.0 - 66.2

75

CM10 (a)

58.1

55.7 - 59.7

75

CM11 (a)

53.5

50.6 - 57.0

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 D2.

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 2.10.

Table 2.10 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), 3

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 monitoring stations under works contracts ND/2024/09 and ND/2024/10 are shown in Figure 2.3 and Table 2.11. The copies of the calibration certificates for the equipment shall be referred to corresponding Monthly EM&A reports.

Subjected to the safety concern arise from the unleashed dog for the access path to U1a, another location of water quality monitoring (U1a’) was selected downstream from U1a. U1a’ is located along the same water stream of U1a and same water body as the impact monitoring station, and outside the area of influence of the works under the Project. Water quality monitoring was carried out at U1a’ on 1 and 9 December 2025. During a site visit with the Independent Environmental Checker (IEC) on 12 December 2025, it was agreed that U1a and U1a’ represent the same water body; therefore, U1a and U1a’ are considered equivalent, subject to safety considerations when selecting the monitoring location. The Proposal of Alternative Water Quality Monitoring was submitted to EPD on 23 December 2025.

Subjected to the influence of ongoing river maintenance works in the San Tin Eastern Main Drainage Channel (STEMDC) affecting access and monitoring conditions at Station D1’, a temporary monitoring location (D1’T) was adopted along the same drainage channel system. D1’T represents the same water body and comparable downstream water quality conditions as D1’, while remaining outside the area directly affected by the maintenance works. Monitoring at D1’T commenced on 11 February 2026. No adverse comments were raised by the IEC during the site visit on 6 February 2026, and the Engineer’s Representative (ER) also raised no adverse comments regarding the temporary arrangement on 10 February 2026, respectively. D1’ and D1’T were considered equivalent for monitoring purposes. According to the latest information from DSD, the maintenance works are progressing downstream in three phases, tentatively completing by end‑March, end‑June and end‑September 2026, and will not extend upstream toward D1’T; therefore, monitoring results at D1’T remain unaffected.

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.

Table 2.11    Locations of Impact Water Quality Monitoring Stations and Monitoring Requirements

Monitoring Station

Relevancy to Works Contract

Coordinates

Description

 

Parameters and Frequency

Easting

Northing

U1a

ND/2024/10

826721

838781

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.

U1a’ (a)

ND/2024/10

826821

838974

Upstream Station

U1b’ (a)

ND/2024/10

827146

840550

Upstream Station (Alternative Monitoring location of U1b)

G1a

ND/2024/10

826686

839212

Gradient Station

G1b

ND/2024/10

826472

839908

Gradient Station

G1c

ND/2024/10

826339

840303

Gradient Station

G1d

ND/2024/10

826316

840657

Gradient Station

D1’ (b)

ND/2024/10

825363

841421

Impact Station

D1’T (c)

ND/2024/10

825536

840985

Impact Station

U2a

ND/2024/09

826181

838334

Upstream Station

U2b’ (b)

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’ (b)

ND/2024/09

824726

840168

Impact Station (Alternative Monitoring location of D2b)

D2c

ND/2024/09

824846

840373

Impact Station

D2d

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)   Alternative water quality monitoring station U1a’ is used as fall-back option in case sampling at original monitoring station of U1a as per EM&A Manual is not practical due to safety condition.

Alternative water quality monitoring station U1b’ is used as fall-back option in case sampling at original monitoring station of U1b as per EM&A Manual is not practical due to low flow condition.

(b)   Alternative water quality monitoring stations D1’, D2b’ and U2b’ have been adopted as replacements of the original stations D1, D2b and U2b as per EM&A Manual due to access limitations.

(c)   Adjustment of water quality monitoring stations D1’T has been adopted as a temporary replacements of the original stations D1’ due to influence of the ongoing river maintenance works in San Tin Eastern Main Drainage Channel (STEMDC) since 9 February 2026

2.3.2  Results and Observations

During the reporting period, weather conditions were predominantly sunny and partly cloudy, providing generally favorable circumstances for conducting impact monitoring of water quality.

Results for water quality monitoring are summarised in Table 2.12 below. No major source of construction works was observed during the water quality monitoring in the reporting period.

The graphical plots of the trends of monitored parameters are in Annex E1.

Table 2.12    SUMMARY OF impact water quality MONITORING RESULTS IN THE REPORTING PERIOD

Monitoring Station

Average

Range

DO (mg/L)

Turbidity (NTU)

SS (mg/L)

DO (mg/L)

Turbidity (NTU)

SS (mg/L)

U1a/U1a’

8.5

3.6

8.1

6.8 - 10.7

0.7 - 8.3

1.3 - 48.5

U1b’

8.3

148.7

48.1

0.4 - 10.2

1.6 - 1000.0

2.5 - 610.0

G1a

8.7

5.8

9.6

1.7 - 11.3

1.2 - 47.7

1.0 - 78.0

G1b

1.8

7.5

7.1

0.4 - 8.7

2.4 - 22.5

3.8 - 15.5

G1c

3.2

6.4

8.4

1.3 - 8.1

2.0 - 23.1

3.6 - 18.5

G1d

7.9

17.6

9.2

5.2 - 10.5

1.6 - 53.7

1.1 - 36.5

D1’ /D1’T

6.3

27.2

16.3

1.5 - 18.2

3.6 - 95.1

2.0 - 51.0

U2a

8.6

4.1

2.6

7.1 - 10.3

0.8 - 9.8

1.0 - 4.9

U2b’

1.9

3.6

3.6

0.9 - 9.7

1.2 - 7.8

1.0 - 6.9

G2

6.2

10.6

12.6

4.6 - 8.6

2.3 - 58.2

1.1 - 227.2

D2a

3.3

5.3

11.0

1.9 - 5.0

1.7 - 26.3

1.0 - 53.5

D2b’

6.6

20.5

14.1

2.2 - 11.7

3.3 - 36.4

5.3 - 23.5

D2c

2.0

8.7

7.1

1.4 - 6.6

3.5 - 26.3

3.2 - 25.9

D2d

1.8

16.4

9.2

1.4 - 3.2

3.6 - 35.6

1.0 - 44.0

D7

1.8

3.3

1.6

1.1 - 2.7

0.3 - 9.0

0.5 - 5.0

D8

3.2

5.8

4.5

2.0 - 4.5

1.9 - 9.9

2.2 - 13.0

No Project‑related Action nor Limit level exceedance was recorded in the reporting period. A total of two (2) Action Level and five (5) Limit Level exceedances were 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 in accordance with the Event and Action Plan presented in Annex E2. Details of exceedances recorded in the reporting period were summarized in Table 2.13 below.

Table 2.13   Summary of EXCEEDANCES RECORDED FOR water QUALITY MONITORING in the reporting period

Month

Monitoring Station

Parameter

Exceedance Level

No. of exceedance(s)

Date

December 2025

D8

SS

Limit Level

1

1 Dec 2025

 

D8

SS

Action Level

1

24 Dec 2025

January 2026

D2a

SS

Limit Level

1

5 Jan 2026

 

D8

SS

Limit Level

1

14 Jan 2026

 

D8

SS

Limit Level

1

26 Jan 2026

 

D2a

SS

Limit Level

1

30 Jan 2026

February 2026

D2d

SS

Action Level

1

11 Feb 2026

2.4 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, thirteen (13) site inspections were carried out for ND/2024/09, and thirteen (13) site inspections were carried out for ND/2024/10. Details of comments and recommendations were provided during site inspections shall be referred to corresponding EM&A monthly reports. Key observations during the site inspections are summarized in Table 2.14.

EPD conducted the site inspection on 2, 3, 5 and 18 December 2025 for ND/2024/09, reminder was provided for implementation of dust control on site to avoid related impact.

Table 2.14    Key Observations Identified during the site inspection in this Reporting Month

Inspection Date

Environmental Observations

Follow-up Status

ND/2024/09

1 December 2025

·         The Contractor was reminded to replace the NRMM label.

·         The NRMM label has been replaced.

8 December 2025

·         The Contractor was reminded to provide regular watering along the haul road to control dust.

·         Haul road has been watering regularly for dust suppression.

17 December 2025

 

·         No particular observation.

·         N/A

22 December 2025

 

·         No particular observation.

·         N/A

29 December 2025

 

·         The Contractor was reminded to cover stockpiles when not in use to prevent dust emission.

·         Stockpiles of dusty material have been covered.

5 January 2026

·         The Contractor was reminded to provide regular watering.

·         Regular watering has been provided in Portion 1D.

12 January 2026

·         The Contractor was reminded to cover stockpile when not in use.

·         Stockpile of dusty material has been covered.

21 January 2026

 

·         No particular observation.

·         N/A

26 January 2026

 

·         No particular observation.

·         N/A

2 February 2026

·         No particular observation.

·         N/A

9 February 2026

·         No particular observation.

·         N/A

16 February 2026

·         No particular observation.

·         N/A

24 February 2026

·         The Contractor was reminded to display the EP at the site entrance.

·         The Contractor was reminded to provide drip trays for chemical containers.

·         The Contractor was reminded to provide sufficient watering regularly.

·         The EP has been replaced at the site entrance.

·         The drip tray has been provided for chemical containers.

ND/2024/10

4 December 2025

•      No particular observation.

•      N/A

11 December 2025

•      The Contractor was reminded to provide watering regularly along haul road.

•      Watering provided along haul road.

16 December 2025

•      NRMM label shall be provided for the silent piler.

•      All silent pilers removed from site on 19 Dec.

23 December 2025

•      Wastewater from wheel washing point overflowed outside the site. The wastewater shall be collected and treated properly prior discharge.

•      Water ditch provided at washing point to prevent overflow.

30 December 2025

•      The Contractor was reminded to provide watering regularly along haul road.

•      Watering regularly was provided along haul road.

6 January 2026

•      The Contractor was reminded to cover the exposed slope.

•      The exposed slope was covered.

13 January 2026

•      No particular observation.

 

•      N/A

20 January 2026

•      Enclosure shall be provided for the generator.

•      Wastewater shall be treated properly with wastewater treatment facility prior discharge. The contractor was reminded to review the wastewater treatment system onsite.

·         Enclosure was provided for the generator.

·         All the wastewater generated was reused in the site and no wastewater was discharge from the site. Additional geotextiles were deployed to minimize silt dispersion downstream. Wastewater treatment facility will be well operated for wastewater prior discharge. All the requirements stated in the discharge license will be follow:

a)    relevant lab test for the parameters stated in the discharge license will be arranged and carried out for upcoming discharge, if any;

b)    relevant party will be informed regularly for no discharge, as stated in the discharge license.

27 January 2026

•      No particular observation.

•      The WetSep onsite was operated. Although no treated wastewater discharged, the contractor was reminded to arrange & carry out lab test for the parameters stated in the discharge license & submit to EPD on timely basis

•      N/A

3 February 2026

•      No particular observation.

•      N/A

10 February 2026

•      No particular observation.

·         N/A

16 February 2026

•      No particular observation.

·         N/A

26 February 2026

•      The contractor was reminded to carry out wheel washing for the trucks before leave the site.

•      The contractor was reminded to conduct water spraying as necessary during dry season.

·         Wheel washing has been applied for all the trucks before leaving the site.

2.5     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 2.15.  Details of cumulative waste management data are presented as a waste flow table in Annex F.

Table 2.15   Comparison of Estimated Amount of Waste Generated for Construction of the Project and Actual Amount Generated during the Reporting Period

Type of Waste

Estimated Amount for the Project (m3)

Actual Amount during Reporting Period (m3)

Inert C&D materials (or public fills) to be disposed of

5,522,800

 

 

631.45

Non-inert C&D materials (or C&D waste) to be disposed of

7,800

3,267.09

Note:

(a)   Assumed Inert C&D waste density = 1,300kg/m3

(b)   Assumed Non-inert C&D waste density = 800 kg/m3

2.6   Implementation Status of Environmental Mitigation Measures

A summary of the Environmental Mitigation Implementation Schedule is presented in Annex G1 and the Environmental Mitigation implementation status in this reporting period is presented in Annex G2.  The necessary mitigation measures were implemented properly for the Project.

2.7   Summary oF Complaints, Notification OF Summons AND Successful Prosecutions

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

3.         comments Conclusion and Recommendations

This EM&A Report presents the findings of the EM&A activities undertaken for the Project during the period of December 2025 – February 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 and ND/2024/10 were covered and carried out.

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

No Project-related Action or Limit level exceedance was recorded in the reporting period. A total of four (4) Action Level and eighty‑one (81) Limit Level exceedances were recorded for impact air 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.

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

No Project-related Action nor Limit level exceedance was recorded in the reporting period. A total of two (2) Action Level and five (5) Limit Level exceedances were 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.

Based on observation from the impact monitoring results and site inspections recorded, it was considered that mitigation measures were effective and efficient in controlling the potential impacts due to construction of the project during the reporting period. 

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.