A1. This is the 5^th Monthly Environment Monitoring and Audit (EM&A) Report for Remaining Phase Development of Kwu Tung North and Fanling North New Development Areas (the Project). This report was prepared by Aurecon Hong Kong Limited (Aurecon) under Service Contract No. NDO 05/2024 Remaining Phase Development of Kwu Tung North and Fanling North New Development Areas - Environmental Team (hereinafter called the “Service Contract”).

A2. Since only construction works were undertaken under Works Contract No. ND/2024/01, Works Contract No. ND/2024/04, Works Contract No. ND/2024/06 and Works Contract No. ND/2024/07 during the reporting month, this report documents the findings of EM&A works at Works Contract No. ND/2024/01, Works Contract No. ND/2024/04, Works Contract No. ND/2024/06 and Works Contract No. ND/2024/07 under the Project during the reporting period only. No construction works occurred in the remaining contracts during the reporting period for Works Contract No. ND/2024/02, ND/2024/03, ND/2024/05 and ND/2024/08.

A3. This Project involves nine (9) Environmental Permits (EPs) (i.e. EP-465/2013/A, EP-466/2013/A, EP-467/2013/A, EP-468/2013/A, EP-470/2013/A, EP-471/2013/A, EP-472/2013/A, EP-473/2013/A and EP-476/2013). Details of each EPs are summarised in Table A1.

Table A1 Works Contracts under relevant Environmental Permits in the Reporting Month

Environmental Permit No.	Works Contracts	Title of Designated Project	Designated Project (DP)
EP-465/2013/A	ND/2024/03 ND/2024/04 ND/2024/05	NENT - San Tin Highway and Fanling Highway Kwu Tung Section Widening (Between San Tin Interchange and Po Shek Wu Interchange)	DP1
EP-466/2013/A	ND/2024/03 ND/2024/05	NENT - Castle Peak Road Diversion	DP2
EP-467/2013/A	ND/2024/01 ND/2024/03 ND/2024/05	NENT - Kwu Tung North New Development Area Road P1 and P2 and Associated New Kwu Tung Interchange and Pak Shek Au Interchange Improvement	DP3
EP-468/2013/A	ND/2024/01 ND/2024/02	Kwu Tung North New Development Area Road D1 to D5	DP4
EP-469/2013	-	Sewage Pumping Stations in Kwu Tung North New Development Area	DP5
EP-470/2013/A	ND/2024/06	Utilization of Treated Sewage Effluent (TSE) from Shek Wu Hui Sewage Treatment Works	DP7
EP-471/2013/A	ND/2024/04	Po Shek Wu Interchange Improvement	DP8
EP-472/2013/A	ND/2024/08	Fanling Bypass Western Section	DP9
EP-473/2013/A	-	Fanling Bypass Eastern Section	DP10
EP-474/2013	-	Shek Wu Hui Sewage Treatment Works - Further Expansion at Fanling North New Development Area	DP11
EP-476/2013	ND/2024/07 ND/2024/08	NENT - Sewage Pumping Stations in Fanling North New Development Area (FLNDA)	DP13

Key Construction Works in the Reporting Period

A4. Apart from the construction works undertaken under Works Contract No. ND/2024/01 since 20 January 2025, construction works under Works Contract No. ND/2024/07 commenced since 27 February 2025, construction works under Works Contract No. ND/2024/06 commenced since 10 March 2025 and construction works under Works Contract No. ND/2024/04 has also been commenced since 10 May 2025. No construction works occurred in the remaining Works Contracts (i.e. Works Contract No. ND/2024/02, ND/2024/03, ND/2024/05 and ND/2024/08) during the reporting period. The commencement dates of each Works Contracts are summarized in Table A2.

Table A2 Commencement Dates of Each Works Contracts

Works Contracts	Commencement Dates
ND/2024/01	20 January 2025
ND/2024/02	Not Commenced
ND/2024/03	Not Commenced
ND/2024/04	10 May 2025
ND/2024/05	Not Commenced
ND/2024/06	10 March 2025
ND/2024/07	27 February 2025
ND/2024/08	Not Commenced

A5. A summary of construction activities undertaken during the reporting period is presented below:

Works Contract No. ND/2024/01:

· All Site Resumption Area(s)

1. Tree survey

2. Site Clearance

· Portion VI (6)

1. Ground Investigation Works

· Portion IX (9)

1. Ground Investigation Works

· Portion XXII (22) and Portion XLIV (44)

1. Ground Investigation Works

· Portion XL (40)

1. Excavation, Mixing with General fill & Backfilling

· Portion XVI (16), XLII (42) and LIII (53)

1. Asbestos Abatement Work

· Portion LIX (59)

1. Setting Up of High Arsenic-Containing Soil (HAS) Treatment Plant

Works Contract No. ND/2024/04:

· Site Clearance

· Site Establishment

· Tree works

· Demolition of existing structures

· Pre-drilling

Works Contract No. ND/2024/06:

· Excavation to +108 mPD of Portion A;

· Excavation of trench of Portion C

· Watermain laying of Portion D

Works Contract No. ND/2024/07:

· Site Clearance

· Site Formation

· Ground Investigation

· Construction of Site Accommodation

· Pre-bored Socketed H Pile Construction

· Sheet Piling

· Pile Cap Construction

· Foundation Works at Footbridge FB4 &FB5

· UU Diversion

· Tree Felling

· Asbestos Containing Materials Survey

· Land Contamination Investigation

· Internal Movement, Importation & Exportation of C&D materials

Works Contract No. ND/2024/02, ND/2024/03, ND/2024/05 and ND/2024/08.

· No Construction Work during reporting period.

Environmental Monitoring and Audit Programme

The environmental monitoring activities, including 1-hour Total Suspended Particulates (TSP) monitoring, 24-hour TSP monitoring, noise monitoring, ecological survey, 24-hour Respirable Suspended Particulates (RSP) (Ambient Arsenic) monitoring for land contamination and environmental site inspection, were undertaken by Environmental Team (ET) under Service Contract No. NDO 04/2019 (i.e. First Phase ET – Wellab) and under Service Contract No. NDO 05/2024 (i.e. Remaining Phase ET Aurecon) during the reporting period in accordance with the approved Updated EM&A Manual. A summary of the monitoring and audit activities during the reporting period is presented in Table A3.

Table A3 Summary of EM&A Activities in the Reporting Period

		Works Contract(s)⁽⁵⁾
EM&A Activities	Monitoring Station(s)	ND/2024/01	ND/2024/02	ND/2024/03	ND/2024/04	ND/2024/05	ND/2024/06	ND/2024/07	ND/2024/08
1-hour TSP Monitoring⁽¹⁾	KTN-DMS1⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	KTN-DMS2⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	KTN-DMS3⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	KTN-DMS4(B)⁽²⁾⁽³⁾	2, 8, 14, 20, 26, 30 May 2025	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	FLN-DMS1⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	3, 9, 15, 21, 27 May 2025	N/A
	FLN-DMS2⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	FLN-DMS3⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	FLN-DMS4⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	FLN-DMS5⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	2, 8, 14, 20, 26, 30 May 2025	N/A
	FLN-DMS6(A)⁽²⁾⁽³⁾	N/A	N/A	N/A	10, 15, 21, 27 May 2025⁽⁷⁾	N/A	N/A	N/A	N/A
	FLN-DMS7⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
24-hour TSP Monitoring⁽¹⁾	KTN-DMS1⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	KTN-DMS2⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	KTN-DMS3⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	KTN-DMS4(B)⁽²⁾⁽³⁾	2, 8, 14, 20, 26, 30 May 2025	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	FLN-DMS1⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	2, 8, 14, 20, 26, 30 May 2025	N/A
	FLN-DMS2⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	FLN-DMS3⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	FLN-DMS4⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	FLN-DMS5(A)⁽²⁾⁽³⁾	N/A	N/A	N/A	N/A	N/A	N/A	2, 8, 14, 20, 26, 30 May 2025	N/A
	FLN-DMS6(A)⁽²⁾⁽³⁾	N/A	N/A	N/A	10, 15, 21, 27 May 2025⁽⁷⁾	N/A	N/A	N/A	N/A
	FLN-DMS7⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Noise Monitoring⁽¹⁾	CP-KTN-NMS1⁽²⁾	3, 10, 15, 21, 27 May 2025⁽⁷⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	CP-KTN-NMS2⁽²⁾	8, 14, 20, 26 May 2025	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	CP-KTN-NMS3⁽²⁾	8, 14, 20, 26 May 2025	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	CP-KTN-NMS4⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	CP-KTN-NMS5⁽²⁾	N/A	N/A	N/A	N/A	N/A	8, 14, 20, 26 May 2025	N/A	N/A
	CP-KTN-NMS6⁽²⁾	8, 14, 20, 26 May 2025	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	CP-KTN-NMS7⁽²⁾	3, 10, 15, 21, 27 May 2025⁽⁷⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	CP-FLN-NMS1⁽²⁾	N/A	N/A	N/A	N/A	N/A	9, 15, 21, 27 May 2025		N/A
	CP-FLN-NMS3⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	CP-FLN-NMS4(A)⁽²⁾⁽³⁾	N/A	N/A	N/A	10, 15, 21, 27 May 2025⁽⁷⁾⁾	N/A	N/A	N/A	N/A
	CP-FLN-NMS5⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	3, 10, 15, 21, 27 May 2025⁽⁷⁾	N/A
	CP-FLN-NMS6⁽²⁾	N/A	N/A	N/A	N/A	N/A	N/A	3, 10, 15, 21, 27 May 2025⁽⁷⁾	N/A
Ecological Monitoring⁽⁶⁾	Monitoring of Measures to Minimise Disturbance to Water Birds on Ng Tung River, Sheung Yue River, and Long Valley	Weekly Monitoring: 8, 9, 12, 16, 22, 23, 26, 27 May 2025⁽⁴⁾ (Transect T1, T2, T3, and T5)	N/A	N/A	Weekly Monitoring: 6, 9, 14, 16, 19, 22, 26, 30 May 2025⁽⁴⁾ (Transect T4)	N/A	Weekly Monitoring: 8, 9, 12, 16, 22, 23, 26, 27 May 2025⁽⁴⁾ (Transect T1, T2, T3)	Weekly Monitoring: 6, 8, 9, 12, 14, 16, 19, 22, 23, 26, 27, 30 May 2025⁽⁴⁾ (Transect T1, T2, T3, T4)	N/A
	Monitoring of Measures to Minimise Impacts to Ma Tso Lung Stream and Siu Hang San Tsuen Stream	Monthly Monitoring: 15 May 2025⁽⁴⁾ (MS_01 – MS_10)	N/A	N/A	N/A	N/A	N/A	Monthly Monitoring: 15 May 2025⁽⁴⁾ (MS_11 – MS_15)	N/A
	Monitoring of Measures to Minimise Impacts on Ecological Sensitive Habitats from Disturbance and Pollution	Monthly Monitoring: 13 May 2025⁽⁴⁾ (Transect T1)	N/A	N/A	N/A	N/A	Monthly Monitoring: 21 May 2025⁽⁴⁾ (Transect T2)	Monthly Monitoring: 20 May 2025⁽⁴⁾ (Transect T3)	N/A
24-hour RSP (Ambient Arsenic) Monitoring for Land Contamination ⁽¹⁾	KTN-DMS-4A⁽²⁾⁽³⁾	2, 8, 14, 20, 26, 30 May 2025	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Water Quality Monitoring⁽¹⁾	KTN-IS1	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	KTN-CS1	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	FLN-IS1	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	FLN-CS1	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Landfill Gas Monitoring	250m Landfill Consultation Zone of Ma Tso Lung Landfill	N/A⁽⁸⁾	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Environmental Site Inspection	Site Area under Works Contract No. ND/2024/01	9, 13, 20, 27 May 2025	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	Site Area under Works Contract No. ND/2024/04	N/A	N/A	N/A	13, 23, 30 May 2025	N/A	N/A	N/A	N/A
	Site Area under Works Contract No. ND/2024/06	N/A	N/A	N/A	N/A	N/A	7, 14, 19, 30 May 2025	N/A	N/A
	Site Area under Works Contract No. ND/2024/07	N/A	N/A	N/A	N/A	N/A	N/A	8, 15, 22, 29 May 2025	N/A

Remarks:

(1) For 1-hour and 24-hour TSP & 24-hour RSP (Ambient Arsenic) monitoring, monitoring stations that are specifically within the 500m buffer area projected from the site boundary of works contract(s) will be considered being the representative monitoring stations for the corresponding works contract(s) and the associated impact monitoring exercises will be kicked off once the nearest works contracts have been commenced and undertaken during the reporting period/month.

For Noise Monitoring, monitoring stations that are specifically within the 300m buffer area projected from the site boundary of works contract(s) will be considered being the representative monitoring stations for the corresponding works contract(s) and the associated impact monitoring exercises will be kicked off once the nearest works contracts have been commenced and undertaken during the reporting period/month.

For Water Quality Monitoring, monitoring stations at which inland waters runs into the major water systems, including their tributaries, passing through the site boundary of works contract(s) involving construction of channelisation works, potentially causing water quality impacts as a result of water bodies contamination, will be considered being the representative monitoring stations for the corresponding works contract(s) involving construction of channelisation works as the rationale for determination of contract involvement in terms of environmental monitoring.

(2) New monitoring station IDs are presented. The corresponding monitoring station IDs are as follows:

1-hr and 24-hr TSP / 24-hr RSP (Ambient Arsenic)

KTN-DMS1 = DMS1
KTN-DMS2 = DMS2
KTN-DMS3 = DMS3
KTN-DMS4(A)/4(B) = DMS4
FLN-DMS1 = DMS7
FLN-DMS2 = DMS9
FLN-DMS3 = DMS11
FLN-DMS4 = DMS6
FLN-DMS5/5(A) = DMS8
FLN-DMS6(A) = DMS10
FLN-DMS7 = DMS5

Noise

CP-KTN-NMS1 = CP-NMS1
CP-KTN-NMS2 = CP-NMS2
CP-KTN-NMS3 = CP-NMS3
CP-KTN-NMS4 = CP-NMS5
CP-KTN-NMS5 = CP-NMS7
CP-KTN-NMS6 = N/A

CP-KTN-NMS7 = CP-NMS4
CP-FLN-NMS1 = CP-NMS10
CP-FLN-NMS3 = CP-NMS12
CP-FLN-NMS4(A) = CP-NMS6
CP-FLN-NMS5 = CP-NMS8
CP-FLN-NMS6 = CP-NMS9

(3) Alternative monitoring stations to the corresponding original monitoring stations.

(4) The monitoring date for May 2025 was conducted by the ET from the First Phase of KTN/FLN NDAs Project, except Transect T4 for the ecological monitoring item Monitoring of Measures to Minimise Disturbance to Water Birds on Ng Tung River, Sheung Yue River, and Long Valley, and Transect T2 for the ecological monitoring item Monitoring of Measures to Minimise Impacts on Ecological Sensitive Habitats from Disturbance and Pollution.

(5) N/A – No relevant monitoring is required according to the approved updated EM&A Manual.

(6) Monitoring of Measures to Minimise Disturbance to Water Birds on Ng Tung River, Sheung Yue River, and Long Valley; Monitoring of Measures to Minimise Impacts on Ecological Sensitive Habitats from Disturbance and Pollution and Monitoring of Measures to Minimize Impacts to Ma Tso Lung Stream and Siu Hang San Tsuen Stream were conducted by the First Phase ET of the KTN/FLN NDAs Project except Transect T4 (waterbird monitoring) and Transect T2 (monitoring of ecological sensitive habitats).

(7) The monitoring date for May 2025 was conducted by the ET from the Remaining Phase of KTN/FLN NDAs Project.

(8) As confirmed by the Supervisor Team, no ground disturbance works were carried out in the work area within 250m Landfill Consultation Zone of Ma Tso Lung Landfill including construction of the infrastructure, development works, excavation works and works involve confined spaces. Routine gas monitoring should be undertaken during groundwork construction and in all excavations.

Breaches of Action Levels (AL) and Limit Levels (LL)

A6. Summary of the environmental exceedances of the reporting period is tabulated in Table A4.

Table A4 Summary of Exceedances in the Reporting Period

Environmental Monitoring	Parameter(s)	No. of Exceedances		Total No. of Exceedances	No. of Non-project Related Exceedances		Total No. of Non-project Related Exceedances	No. of Exceedances Related to the Project		Total No. of Exceedances Related to the Project
Environmental Monitoring	Parameter(s)	AL	LL		AL	LL		AL	LL
Air Quality	1-hour TSP	0	0	0	0	0	0	0	0	0
	24-hourTSP	0	0	0	0	0	0	0	0	0
	24-hour RSP (Ambient Arsenic)	0	0	0	0	0	0	0	0	0
Noise	L_eq(30mins)	0	0	0	0	0	0	0	0	0
Ecological Monitoring	Avifauna	0	0	0	0	0	0	0	0	0
	Aquatic fauna	0	0	0	0	0	0	0	0	0
	Non-aquatic fauna	0	0	0	0	0	0	0	0	0

Air Quality

A7. No AL or LL exceedance was recorded for air quality monitoring in the reporting period.

Noise

A8. No AL or LL exceedance was recorded for construction noise monitoring in the reporting period.

Ambient Arsenic

A9. No AL or LL exceedance was recorded for ambient arsenic monitoring in the reporting period.

Ecological Monitoring

A10. No AL or LL exceedance was recorded for ecological monitoring in the reporting period.

Complaint Log

A11. No environmental complaint was received in the reporting period.

Notification of Summons and Successful Prosecutions

A12. No notification of summons or successful prosecutions was received in the reporting period.

Reporting Changes

A13. There was no change to be reported that may affect the on-going EM&A programme.

Future Key Issues

A14. The major site activities for the next reporting period are summarized below and shown in Appendix 1.1:

Contract No. ND/2024/01:

· All Site Resumption Area(s)

1. Tree survey

2. Site Clearance

· Portion XL (40)

1. Excavation, Mixing with General fill & Backfilling

2. Construct Retaining Wall & Backfilling

· Portion LIX (59)

1. Site Clearance

2. Setting Up including T&C of High Arsenic-Containing Soil (HAS) Treatment Plant

Contract No. ND/2024/03

· Portion XVI

1. Site Clearance and Tree Works

2. Watermain and Sewer Pipe Laying

· Portion IX

1. Asbestos Removal Works

· Portion XI

1. Site Clearance and Tree Works

2. Ground Investigation

· TTA stage 1 Works

1. Tree Works

2. Demolish of Central Divider & Barrier

· TTA stage 1B

1. Site Clearance

· TTA stage 3

1. Predrilling & Piling Works

· Works Areas – WA1, WA2, WA3 & WA4

1. Site Clearance and Site Formation

2. Hoarding Works

3. Asbestos Removal Works

Contract No. ND/2024/04

· Site Clearance

· Site Establishment

· Tree works

· Demolition of existing structures

· Pre-drilling

Contract No. ND/2024/06

· Forming Haul Road beside Existing THFWSR For Excavation Works of Portion A;

· Transplantation of fern (2nd batch);

· Ground investigation works

· Slope trimming and soil nailing works of cut slope S1 & S2 / access road of Portion A;

· Preservation Works for Plant with Conservation Importance (2nd Stage);

· Demolition of DN2000 pipes and associated thrust blocks of Portion D &

· Watermains laying works at Fu Tei Au Road of Portion C

Contract No. ND/2024/07

· Site Clearance

· Site Formation

· Construction of Site Accommodation

· Pre-bored Socketed H Pile Construction

· Pile Cap Construction

· Foundation Works at Footbridge FB4 & FB5

· Tree Felling & Transplantation

· Sewerage Construction

· Asbestos Containing Materials Removal (subject to approval of AAP by EPD)

· Archaeological Impact Assessment

· Land Contamination Investigation

· Internal Movement, Importation & Exportation of C&D materials

1 Introduction

1.1 Project Background

1.1.1 The KTN/FLN NDAs development are implemented in two phases, comprising First Phase and Remaining Phase developments. The construction works for the First Phase development commenced in December 2019. The construction works for the Remaining Phase development (the Project), including site clearance and formation, roads, drainage, sewerage and water supply systems, commenced progressively from the January 2025.

1.1.2 The Project is delivered under eight (8) Works Contracts as below.

· Contract No. ND/2024/01: Site Formation and Infrastructure Works (South);

· Contract No. ND/2024/02: Site Formation and Infrastructure Works (North);

· Contract No. ND/2024/03: Improvement Works of Fanling Highway (Kwu Tung Portion) and Associated Works;

· Contract No. ND/2024/04: Improvement Works of Tai Tau Leng Roundabout and Po Shek Wu Road and Associated Works;

· Contract No. ND/2024/05: Improvement Works of Fanling Highway (Pak Shek Au Portion) and Associated Works;

· Contract No. ND/2024/06: Fresh Water and Flushing Water Service Reservoirs and Associated Works;

· Contract No. ND/2024/07: Site Formation and Infrastructure Works (East); and

· Contract No. ND/2024/08: Site Formation and Infrastructure Works (West).

1.1.3 The EIA Report (AEIAR-175/2013) for NENT NDA was approved with conditions under EIAO in 2013. The Environmental Permits for corresponding Designated Projects were also issued by DEP in November 2013. Subsequent to the findings of preliminary design and P&E Review for accommodating additional population in KTN and FLN NDAs, VEP were subsequently applied for nine EPs under the Project (i.e. EP-465/2013/A, EP-466/2013/A, EP-467/2013/A, EP-468/2013/A, EP-470/2013/A, EP-471/2013/A, EP-472/2013/A, EP-473/2013/A and EP-476/2013).

1.1.4 Aurecon was commissioned by Civil Engineering and Development Department (CEDD) to provide EM&A services for the works contracts in relation to the Project pursuant to the requirements as specified in relevant EPs, the EM&A Manual issued in the EIA stage, the Updated EM&A Manual prepared for Contract No. NDO 14/2018 and the approved EIA Report for the Project to discharge the duties of the ET for the Project.

1.1.5 This is the 5^th Monthly EM&A Report summarizing the findings of EM&A works at Works Contract No. ND/2024/01 under the Project with EP-467/2013/A and EP-468/2013/A, Works Contract No. ND/2024/04 under the Project with EP-465/2013/A and EP-471/2013/A, Works Contract No. ND/2024/06 under Environmental Permit No. EP-470/2013/A and for Contract No. ND/2024/07 under Environmental Permit No. EP-476/2013 during the reporting period from 01 to 31 May 2025. No construction works occur in the remaining contracts during the reporting period for Contract No. ND/2024/02, ND/2024/03, ND/2024/05 and ND/2024/08.

1.2 Project Organisation

1.2.1 Parties with different levels of involvement in the Project organisation for Works Contracts are summarized in Table 1.1.

Table 1.1 Parties Involved in Project Organization for all Works Contracts

	Works Contract(s)
Parties		ND/2024/01	ND/2024/02	ND/2024/03	ND/2024/04	ND/2024/05	ND/2024/06	ND/2024/07	ND/2024/08
Project Proponent		CEDD
Supervisor / Engineer’s Representative (ER)		AECOM Asia Co. Ltd.	-	-	AECOM Asia Co. Ltd	-	Binnies Hong Kong Limited	AtkinsRéalis	-
Contractor		Build King – Richwell Engineering Joint Venture (BKJV)	-	-	Chun Wo Construction and China Railway Construction Corporation Limited Joint Venture	-	Wo Hing-Tsun Yip Joint Venture	Build King – Richwell Engineering Joint Venture (BKJV)	-
ET		Aurecon Hong Kong Limited
Independent Environmental Checker (IEC)		Mott MacDonald Hong Kong Limited

1.2.2 The key personnel contact names and contact numbers are summarized in Appendix 1.2.

1.3 Construction Works Programme and Construction Works Area

1.3.1 The construction phase EM&A programme commenced since 20 January 2025 progressively. The construction works programme, and the construction works area of the Project are shown in Appendix 1.1 and Figure 1.1 respectively. A summary of construction activities undertaken during the reporting period is presented below:

Works Contract No. ND/2024/01:

· All Site Resumption Area(s)

1. Tree survey

2. Site Clearance

· Portion VI (6)

1. Ground Investigation Works

· Portion IX (9)

1. Ground Investigation Works

· Portion XXII (22) and Portion XLIV (44)

1. Ground Investigation Works

· Portion XL (40)

1. Excavation, Mixing with General fill & Backfilling

· Portion XVI (16), XLII (42) and LIII (53)

1. Asbestos Abatement Work

· Portion LIX (59)

1. Setting Up of High Arsenic-Containing Soil (HAS) Treatment Plant

Works Contract No. ND/2024/04:

· Site Clearance

· Site Establishment

· Tree Works

· Demolition of existing structures

· Pre-drilling

Works Contract No. ND/2024/06:

· Excavation to +108 mPD of Portion A;

· Excavation of trench of Portion C;

· Watermain laying of Portion D

Work Contract No. ND/2024/07:

· Site Clearance

· Site Formation

· Ground Investigation

· Construction of Site Accommodation

· Pre-bored Socketed H Pile Construction

· Sheet Piling

· Pile Cap Construction

· Foundation Works at Footbridge FB4 &FB5

· UU Diversion

· Tree Felling

· Asbestos Containing Materials Survey

· Land Contamination Investigation

· Internal Movement, Importation & Exportation of C&D materials

1.4 Summary of Environmental Status

1.4.1 A summary of the relevant permits, licences, and/or notifications on environmental protection for the work contracts that are involved in this reporting period is presented in Table 1.2 to Table 1.5.

Table 1.2 Status of Environmental License, Notifications and Permits for Works Contract No. ND/2024/01

Permit / License Name/No.	Valid Period		Status
Permit / License Name/No.	From	To	Status
Environmental Permit
EP-467/2013/A	27/01/2017	N/A	Valid
EP-468/2013/A	27/01/2017	N/A	Valid
Notification pursuant to Air Pollution Control (Construction Dust) Regulation
10008709	02/09/2024	N/A	Valid
Billing Account for Disposal of Construction Waste
7052236	20/09/2024	N/A	Valid
Registration of Chemical Waste Producer
WPN: 5213-548-B2781-01	06/12/2024	N/A	Valid
Effluent Discharge License under Water Pollution Control Ordinance
WT00045924-2024	15/01/2025	31/01/2030	Valid
Construction Noise Permit (CNP)
GW-RN0060-25	20/01/2025	19/07/2025	Valid

Table 1.3 Status of Environmental License, Notifications and Permits for Works Contract No. ND/2024/04

Permit / License Name/No.	Valid Period		Status
Permit / License Name/No.	From	To	Status
Environmental Permit
EP-465/2013/A	20/01/2017	N/A	Valid
EP-471/2013/A	10/10/2022	N/A	Valid
Notification pursuant to Air Pollution Control (Construction Dust) Regulation
10012919	N/A	N/A	Under Application
Billing Account for Disposal of Construction Waste
7053746	13/02/2025	N/A	Valid
Registration of Chemical Waste Producer
WPN:5213-626-C5043-25	28/01/2025	N/A	Valid
Effluent Discharge License under Water Pollution Control Ordinance
10017727	N/A	N/A	Under Application
Construction Noise Permit (CNP)
GW-RN0504-25	04/05/2025	31/07/2025	Valid

Table 1.4 Status of Environmental License, Notifications and Permits for Works Contract No. ND/2024/06

Permit / License Name/No.	Valid Period		Status
Permit / License Name/No.	From	To	Status
Environmental Permit
EP-470/2013/A	13/05/2022	N/A	Valid
Notification pursuant to Air Pollution Control (Construction Dust) Regulation
10007695	06/08/2024	N/A	Valid
Billing Account for Disposal of Construction Waste
7051899	28/08/2024	N/A	Valid
Registration of Chemical Waste Producer
WPN:5213-624-W3824-01	04/09/2024	N/A	Valid
Effluent Discharge License under Water Pollution Control Ordinance
Portion A	15/05/2025	31/05/2030	Valid
Portion D	29/05/2025	31/05/2030	Valid
Construction Noise Permit (CNP)
GW-RN0267-25	21/03/2025	30/06/2025	Valid

Table 1.5 Status of Environmental License, Notifications and Permits for Works Contract No. ND/2024/07

Permit / License Name/No.	Valid Period		Status
Permit / License Name/No.	From	To	Status
Environmental Permit
EP-476/2013	21/11/2013	N/A	Valid
Notification pursuant to Air Pollution Control (Construction Dust) Regulation
10007874	09/08/2024	N/A	Valid
Billing Account for Disposal of Construction Waste
7051974	20/08/2024	N/A	Valid
Registration of Chemical Waste Producer
WPN:5213-625-B2775-01	19/08/2024	N/A	Valid
Effluent Discharge License under Water Pollution Control Ordinance
WT00045532-2024	10/12/2024	31/12/2029	Valid
WT00046059-2025	14/02/2025	28/02/2030	Valid
Construction Noise Permit (CNP)
GW-RN0448-25	24/04/2025	31/10/2025	Valid
GW-RN0570-25	16/05/2025	22/08/2025	Valid
GW-RN0565-25	26/05/2025	30/11/2025	Valid

2 Air Quality Monitoring

2.1 Monitoring Requirement

2.1.1 In accordance with the EM&A Manual, the approved updated EM&A Manual for the First Phase, the ET shall carry out impact monitoring during the construction phase of the Project. 1-hour and 24-hour TSP to monitor the air quality for the Works Contacts.

2.1.2 Impact 1-hour TSP monitoring was conducted for at least three times every 6 days, while the impact 24-hour TSP monitoring was conducted for at least once every 6 days at the designated air quality monitoring stations.

2.2 Monitoring Location

2.2.1 According to the EM&A Manual, the approved updated EM&A Manual for the First Phase, the designated locations for impact air quality monitoring in related to the work contracts in the reporting period are listed in Table 2.1 and their locations are shown in Figure 2.1 and 2.2.

Table 2.1 Summary of Impact Air Quality Monitoring Stations in related to the Works Contracts in the Reporting Period

Monitoring Station(s)	Works Contract(s)	ASR ID in EIA	Planned⁽³⁾ or Existing	Monitoring Location(s)
KTN-DMS1	ND/2024/01	KTN-19	Planned	Nursery Classes and Kindergarten; Post Offices
KTN-DMS2	ND/2024/01	KTN-90	Planned	Nursery Classes and Kindergarten (2 nos); District Elderly Community Centre
KTN-DMS3	ND/2024/01	KTN-326	Planned	Village Resite
KTN-DMS4(B)⁽¹⁾⁽²⁾	ND/2024/01	KTN-E70	Existing	Temporary Structure at Pak Shek Au
FLN-DMS1	ND/2024/07	FLN-E62	Existing	Scattered Village Houses North of Proposed Potential Ecopark
FLN-DMS2	ND/2024/06, ND/2024/07	FLN-E243	Planned	Residential Building, Nursery Classes and Kindergartens, Neighbourhood Elderly Community Centre, Residential Home for the Elderly, Post Office
FLN-DMS5, FLN-DMS5(A)	ND/2024/07	FLN-E124	Existing	Noble Hill / Good View New Village
FLN-DMS6(A)	ND/2024/04	DMS-10	Existing	Choi Ngan House, Choi Po Court
FLN-DMS7	ND/2024/06, ND/2024/07	FLN-20	Planned	Planned premise for Weapon Training Division

Remarks:

(1) KTN-DMS4(B) is the alternative air monitoring stations proposed to replace KTN-DMS4.

(2) As KTN-DMS4 - Temporary structure near Fanling Highway (near Pak Shek Au) is no longer as existing ASR, air quality monitoring station should be relocated to the alternative dust monitoring location according to the updated EM&A Manual, Section 2.6.2. According to Figure 3.1 of Approved EIA report and site visits conducted in June 2022, ASR at near KTN-E70 – Temporary Structure near Fanling Highway near Pak Shek Au is considered as the most representative alternative station KTN-DMS4(B) for air quality monitoring for KTN-DMS4 (i.e. KTN-E162).

(3) Impact monitoring will be carried out when the planned sensitive receivers are commissioned.

2.3 Monitoring Parameter and Frequency and Duration

2.3.1 In accordance with the requirements for placement of equipment, as set out of the EM&A Manual of the Project, the approved updated EM&A Manual for the First Phase, the monitoring parameter, frequency and duration of impact air quality monitoring are listed in Table 2.2.

Table 2.2 Parameters Measured in the Impact Air Quality Monitoring

Parameter(s)	Frequency⁽¹⁾⁽²⁾
1-hour TSP	Three times / 6 days
24-hour TSP	Once / 6 days

Remark:

(1) The air quality monitoring (1-hour and 24-hour TSP) was conducted by First Phase ET during the reporting period.

(2) The air quality monitoring (1-hour and 24-hour TSP) was conducted by Remaining Phase ET during the reporting period.

2.4 Monitoring Equipment

2.4.1 Direct reading dust meters and High-Volume TSP Samplers were used for measuring the impact air quality monitoring (i.e. 1-hour TSP and 24-hour TSP) during the reporting period in accordance with the Service Contract No. NDO 04/2019 Monthly EM&A Report. According to Section 2.4.5 of the EM&A Manual, the approved updated EM&A Manual for First Phase ET, the proposed use of direct reading dust meter was submitted to and agreed by the First Phase IEC. HVS for 24-hour TSP monitoring will be adopted once secured supply of electricity become available at FLN-DMS5(A) and KTN-DMS4(B).

2.4.2 Table 2.3 summarizes the equipment used in the air quality monitoring programme. Copies of the calibration certificates for air quality monitoring equipment are shown in Appendix 2.2.

Table 2.3 Air Quality Monitoring Equipment

Monitoring Station(s)	Equipment	Model	Manufacturer	Quantity
KTN-DMS4(B)⁽¹⁾, FLN-DMS5⁽¹⁾, FLN-DMS5(A)⁽¹⁾	Dust Monitor (1-hour and 24-hour TSP)	AEROCET-831	Met One Instruments	8
FLN-DMS1⁽¹⁾	Dust Monitor (1-hour TSP)	AEROCET-831	Met One Instruments	8
FLN-DMS1⁽¹⁾	HVS Sampler (24-hour TSP)	TE-5170	Tisch	1
FLN-DMS6(A)⁽²⁾	Dust Monitor (1-hour and 24-hour TSP)	LD-5R	Sibata	1

Remark:

(1) The air quality monitoring (1-hour and 24-hour TSP) was conducted by First Phase ET during the reporting period.

(2) The air quality monitoring (1-hour and 24-hour TSP) was conducted by Remaining Phase ET during the reporting period.

2.5 Monitoring Methodology and QA/QC Procedure

2.5.1 Direct reading dust meter was deployed for the air quality monitoring as shown in Table 2.3.

Instrumentation

(AEROCET-831)

2.5.2 The measuring procedures of the dust meters were in accordance with the Manufacturer’s Instruction Manual as follows:

· Place the dust meter at least 1.3 meters above ground;

· Press and hold the Power key momentarily to power on the unit and make sure that the battery level was not flash or in low level;

· Allow the instrument to stand for about 3 second to display the Sample Screen minutes;

· Press the START / STOP key to run the internal vacuum pump for 1 minute and be ready to use;

· Use the select dial to select the PM range and press the START / STOP key to start a measurement;

· Finally, push the START/STOP key to stop the measurement after 24-hour sampling;

· Information such as sampling date, time, value and site condition were recorded during the monitoring period; and

· All data were recorded in the data logger for further data processing.

Maintenance/Calibration

2.5.3 The following maintenance/calibration was required for the HVS:

· Check and calibrate the meters by High Volume Sampler (HVS) to check the validity and accuracy of the results measured by direct reading method at 2-month intervals throughout all stages of the air quality monitoring.

Instrumentation

(TISCH Model: TE-5170 / TE-5170X)

2.5.4 The following guidelines were adopted during the installation of HVS:

· A horizontal platform with appropriate support was provided to secure the samplers against gusty wind. the dust meter at least 1.3 meters above ground;

· No two samplers were placed less than 2 metres apart.

· The distance between the sampler and an obstacle, such as buildings, was at least twice the height that the obstacle protrudes above the sampler.

· A minimum of 2 metres of separation from walls, parapets and penthouses was required for rooftop samples.

· A minimum of 2 metres separation from any supporting structure, measured horizontally was required.

· No furnaces or incineration flues were nearby.

· Airflow around the sampler was unrestricted.

· The sampler were more than 20 metres from the drip line.

· Any wire fence and gate, to protect the sampler, should not cause any obstruction during monitoring.

· Permission and access to monitoring stations have been obtained to set up the samplers.

· A secured supply of electricity was provided to operate the samplers.

Filters Preparation

2.5.5 Wellab Limited (HOKLAS Registration No. HOKLAS083) is a HOKLAS accredited laboratory and responsible for the preparation of 24-hour conditioned and pre-weighed filter papers for the monitoring team.

2.5.6 All filters were equilibrated in the conditioning environment for 24 hours before weighing. The conditioning environment temperature was around 25°C and not variable by more than ±3°C; the relative humidity (RH) was < 50% and not variable by more than ±5%. A convenient working RH was 40%.

Operating/Analytical Procedures

2.5.7 Operating/analytical procedures for the air quality monitoring were highlighted as follows:

· Prior to the commencement of dust sampling, the flow rate of the HVS was properly set (between 1.1 m3 /min. and 1.4 m3 /min.) in accordance with the manufacturer's instruction to within the range recommended in USEPA Standard Title 40, CFR Part 50;

· The power supply was checked to ensure the sampler worked properly;

· On sampling, the sampler was operated for 5 minutes to establish thermal equilibrium before placing any filter media at the designated air quality monitoring station;

· The filter holding frame was then removed by loosening the four nuts and carefully a weighted and conditioned filter was centered with the stamped number upwards, on a supporting screen;

· The filter was aligned on the screen so that the gasket formed an airtight seal on the outer edges of the filter. The filter holding frame was then tightened to the filter holder with swing bolts. The applied pressure should be sufficient to avoid air leakage at the edges;

· The shelter lid was closed and secured with the aluminum strip;

· The timer was then programmed. Information was recorded on the record sheet, which included the starting time, the weather condition and the filter number (the initial weight of the filter paper can be found out by using the filter number);

· After sampling, the filter was removed and kept in a clean and tightly sealed plastic bag. The filter paper was then returned to the HOKLAS accredited laboratory (Wellab Ltd.) for reconditioning in the humidity-controlled chamber followed by accurate weighting by an electronic balance with a readout down to 0.1mg. The elapsed time was also recorded; and

· Before weighing, all filters were equilibrated in a conditioning environment for 24 hours. The conditioning environment temperature should be between 25°C and 30°C and did not vary by more than ±3°C; the RH should be < 50% and did not vary by more than ±5%. A convenient working RH is 40%. Weighing results were returned for further analysis of TSP concentrations collected by each filter

Maintenance/Calibration

2.5.8 The following maintenance/calibration was required for the HVS:

· The high-volume motors and their accessories were properly maintained. Appropriate maintenance such as routine motor brushes replacement and electrical wiring checking were made to ensure that the equipment and necessary power supply are in good working conditions; and

· All HVS were calibrated (five point calibration) using Calibration Kit prior to the commencement of baseline monitoring and thereafter at bi-monthly intervals.

Instrumentation

(Sibata Model: LD5R)

2.5.9 The measuring procedures of the dust meters were in accordance with the Manufacturer’s Instruction Manual as follows:

· Placed the dust meters at least 1.5m above ground

· Set POWER to “ON” and make sure that the battery level not flashed or in low level;

· Pulled the air sampling inlet cover up;

· Pushed the knob at MEASURE position;

· Set time/mode setting to [BG] by pushing the time setting switch. Then, started the background measurement by pushing the start/stop switch once. It took 6 sec. to complete the background measurement;

· Turned knob to SENSI. ADJ position and pressed in;

· Pushed Start/Stop switch once;

· Gently returned knob to the MEASURE position;

· Pushed the time setting switch to change the time setting display to [LOG] at the bottom left of the liquid crystal display;

· Removed the cap and started measurement; and

· Information such as sampling date, time, count value and site condition were recorded during the monitoring period.

Maintenance/Calibration

2.5.10 The following maintenance/calibration was required for the direct reading dust meter:

· Direct reading dust meter shall be used in determining 1-hr TSP and 24-hr TSP at air quality monitoring points. The direct reading dust meters have been calibrated against high volume samplers (HVSs) bi-monthly. A 2-day, three 3-hour measurement results per day from direct reading dust meters were taken to compare with the sampling results from the HVSs. The correlation between the direct reading dust meters and the HVSs were then concluded. By accounting for the correlation factor, the direct reading dust meters are considered to achieve comparable results as that of the HVSs.

· The HVS used to calibrate the direct dust monitor will need to be calibrated bi-monthly. Details of maintenance and calibration for the HVS refers to Section 2.5.8. Calibration for the air quality monitoring equipment is attached to the Appendix 2.2.

2.6 Action and Limit Level for Air Quality Monitoring

2.6.1 The baseline monitoring results formed the basis for determining the air quality criteria for the impact monitoring. The ET shall compare the impact monitoring results with air quality criteria set up for 1-hour TSP and 24-hour TSP. Based on the baseline dust monitoring data and the derivation criteria specified above, the Action/Limit Levels for 1-hour TSP and 24-hour TSP are presented in Table 2.4 and Table 2.5 respectively.

Table 2.4 Action and Limit Levels for 1-hour TSP Air Quality Monitoring

Monitoring Station	AL (μg/m³)	LL (μg/m³)
KTN-DMS4(B)	297	500
FLN-DMS1	303	500
FLN-DMS5	279	500
FLN-DMS6(A)	286	500

Table 2.5 Action and Limit Levels for 24-hour of TSP Air Quality Monitoring

Monitoring Station	AL (μg/m³)	LL (μg/m³)
KTN-DMS4(B)	192	260
FLN-DMS1	150	260
FLN-DMS5(A)	153	260
FLN-DMS6(A)	157	260

2.7 Results and Observations

2.7.1 Air quality monitoring was conducted as scheduled in the reporting period. The air quality monitoring schedule during the reporting period is shown in the Appendix 2.1.

2.7.2 The 1-hour and 24-hour TSP air quality monitoring result in the reporting period are summarized in Table 2.6 and 2.7. No Action or Limit levels exceedance was recorded in the reporting period. Details of the results and graphical presentation are shown in Appendix 2.2.

2.7.3 The weather information during the reporting period is presented in Appendix 2.3.

Table 2.6 Summary Table of 1-hour TSP Monitoring Result during the Reporting Month

Monitoring Station	Averaged Measured Value (μg/m³)	Minimum Measured Value (μg/m³)	Maximum Measured Value (μg/m³)	Action Level (μg/m³)	Limit Level, (μg/m³)
KTN-DMS4(B)⁽¹⁾	60	25	87	297	500
FLN-DMS1⁽¹⁾	75	44	120	303	500
FLN-DMS5⁽¹⁾	47	34	69	279	500
FLN-DMS6(A)⁽²⁾	35	16	61	286	500

Remark:

(1) The air quality monitoring (1-hour and 24-hour TSP) was conducted by First Phase ET during the reporting period.

(2) The air quality monitoring (1-hour and 24-hour TSP) was conducted by Remaining Phase ET during the reporting period.

Table 2.7 Summary Table of 24-hour TSP Monitoring Result during the Reporting Month

Monitoring Station	Averaged Measured Value (μg/m³)	Minimum Measured Value (μg/m³)	Maximum Measured Value (μg/m³)	Action Level (μg/m³)	Limit Level, (μg/m³)
KTN-DMS4(B)⁽¹⁾	62	38	75	192	260
FLN-DMS1⁽¹⁾	57	24	81	150	260
FLN-DMS5(A)⁽¹⁾	48	38	57	153	260
FLN-DMS6(A)⁽²⁾	39	32	45	157	260

Remark:

(1) The air quality monitoring (1-hour and 24-hour TSP) was conducted by First Phase ET during the reporting period.

(2) The air quality monitoring (1-hour and 24-hour TSP) was conducted by Remaining Phase ET during the reporting period.

2.7.4 According to the observation record from Monthly EM&A Report (May 2025) prepared under Service Contract No. NDO 04/2019 , the major dust source KTN-DMS4(B), FLN-DMS1, FLN-DMS5 and FLN-DMS5(A) included excavator, crane, breaker, roller, dump truck, concrete mixer truck, road traffic, sheet piling etc. For station conducted by Remaining Phase ET, the major dust source for FLN-DMS6(A) is from road traffic.

2.8 Event and Action Plan

2.8.1 Should any non-compliance of the criteria occur, action in accordance with the Event and Action Plan in Appendix 2.4 shall be followed. Investigation of the exceedances of environmental quality performance limits should be conducted, and the ET will immediately notify the IEC and EPD, as appropriate. The notification should be followed up with advice to the IEC and EPD on the results of the investigation, proposed actions and success of the action taken, with any necessary follow-up proposals.

3 Construction Noise Monitoring

3.1 Monitoring Requirements

3.1.1 In accordance with the approved Updated EM&A Manual, the ET shall carry out impact monitoring during the construction phase of the Project in terms of the A-weighted equivalent continuous sound pressure level (L_eq) to monitor the construction noise arising from the construction activities. The regular monitoring frequency for each monitoring station was on a weekly basis and one set of measurements between 0700 and 1900 hours on normal weekdays shall be conducted.

3.2 Monitoring Locations

3.2.1 According to the approved Updated EM&A Manual, the monitoring designated locations for construction noise monitoring in related to the works contracts in the reporting period are listed in Table 3.1 and shown in Figure 3.1 and 3.2.

Table 3.1 Construction Noise Monitoring Stations near in related to the Works Contracts in the Reporting period

Monitoring Station(s)	Works Contract(s)	NSR EIA ID(s)	Location(s)	Planned⁽²⁾ Or Existing	Type of Measurement
CP-KTN-NMS1	ND/2024/01	CP-NMS1	Residential Building at Ma Tso Lung	Existing	Free-Field⁽¹⁾
CP-KTN-NMS2	ND/2024/01	CP-NMS2	Residential Building at Ma Tso Lung	Existing	Free-Field⁽¹⁾
CP-KTN-NMS3	ND/2024/01	CP-NMS3	Fung Kong Garden	Existing
CP-KTN-NMS4⁽³⁾	ND/2024/01	CP-NMS5	Primary School	Planned
CP-KTN-NMS5	ND/2024/06	CP-NMS7	N/A	Planned	Free-Field⁽¹⁾
CP-KTN-NMS6	ND/2024/01	N/A	Ho Sheung Heung, Hau Ku ShekAncestral Hall, Hung Shing Temple & Pai Fung Temple and Sin Wai Nunnery	Existing	Façade
CP-KTN-NMS7	ND/2024/01	CP-NMS4	Oi Lok Home	Existing	Free-Field⁽¹⁾
CP-FLN-NMS4(A)⁽⁴⁾	ND/2024/04	CP-NMS6	Choi Ying House, Choi Po Court (Choi Yuen Estate)	Existing	Free-Field⁽¹⁾
CP-FLN-NMS1	ND/2024/06, ND/2024/07	CP-NMS10	Belair Monte	Existing	Facade
CP-FLN-NMS3⁽³⁾	ND/2024/06, ND/2024/07	CP-NMS12	Secondary School	Planned	Free-Field⁽¹⁾
CP-FLN-NMS5	ND/2024/07	CP-NMS8	Man Kok Village	Existing	Free-Field⁽¹⁾
CP-FLN-NMS6	ND/2024/07	CP-NMS9	Woodland Crest	Existing	Façade

Remarks:

(1) For Free Field measurement, +3 dB(A) should be added to the measured results.

(2) Impact monitoring will be carried out when the planned sensitive receivers are commissioned.

(3) As confirmed with Engineer Representative, the planned school at CP-KTN-NMS4 and CP-FLN-NMS3 are not constructed yet. Thus, the impact noise monitoring will be carried out at monitoring station CP-KTN-NMS4 and CP-FLN-NMS3 after the construction and occupation of the planned school. No noise monitoring of the mentioned station was carried out in this reporting period.

(4) Alternative monitoring stations to the corresponding original monitoring stations.

3.3 Noise Monitoring Parameter, Frequency and Duration

3.3.1 Construction noise level was measured by the ET and measured in terms of the A-weighted equivalent continuous sound pressure level (L_eq). L_eq(30mins) used as the monitoring parameter for the construction noise monitoring.

3.3.2 As supplementary information for data auditing, statistical results such as L₁₀ and L₉₀ were also obtained for reference.

3.3.3 Table 3.2 summarizes the monitoring parameters, duration, and frequency of construction noise monitoring.

Table 3.2 Construction Noise Monitoring Parameter, Frequency and Duration

Monitoring Station

Parameter

Frequency and Duration

CP-KTN-NMS1⁽²⁾, CP-KTN-NMS2⁽¹⁾, CP-KTN-NMS3⁽¹⁾, CP-KTN-NMS5⁽¹⁾, CP-KTN-NMS6⁽¹⁾,CP-KTN-NMS7⁽²⁾,CP-FLN-NMS1⁽¹⁾, CP-FLN-NMS4(A)⁽²⁾, CP-FLN-NMS5⁽²⁾, CP-FLN-NMS6⁽²⁾

L_eq(30mins), L₁₀ and

L₉₀(as six consecutive L_eq,5minreadings)

Once every week throughout the construction phase

Remark:

(1) The noise monitoring was conducted by First Phase ET during the reporting period.

(2) The noise monitoring was conducted by Remaining Phase Environmental Team during the reporting period.

3.4 Monitoring Equipment, Methodology and QA / QC Procedure

3.4.1 As referred to the technical memorandum issued under the Noise Control Ordinance (NCO), sound level meters in compliance with the International Electrotechnical Commission Publications 651: 1979 (Type 1) and 804: 1985 (Type 1) specifications were used for carrying out the construction noise monitoring.

3.4.2 Noise measurements were not made in fog, rain, wind with a steady speed exceeding 5 m/s or wind with gusts exceeding 10 m/s. The wind speed was checked with a portable wind speed meter capable of measuring the wind speed in m/s.

3.4.3 Sufficient numbers of noise measuring equipment and associated instrumentation were prepared by the ET. All the equipment and associated instrumentation were clearly labelled.

3.4.4 The monitoring procedures are as follows:

· For façade measurement, the monitoring station was set at a point 1 m from the exterior of the sensitive receivers building façade and set at a position 1.2 m above the ground. For free-field measurement, the monitoring station was set at a position 1.2 m above the ground.

· The battery condition was checked to ensure good functioning of the meter.

· Parameters such as frequency weighting, the time weighting and the interval were set as follows:

- Frequency weighting: A

- Time weighting: Fast

- Interval: 30 minutes (L_eq(30mins))

· Prior to and after each noise measurement, the meter was calibrated using an acoustic calibrator for 94.0 dB at 1000 Hz. If the difference in the calibration level before and after measurement is more than 1.0 dB, the measurement was considered invalid and repeat of noise measurement will be required after re-calibration or repair the equipment.

· At the end of the monitoring period, the values of L_eq, L₁₀ and L₉₀ were recorded. In addition, noise sources were recorded on a standard record sheet.

3.4.5 Table 3.3 summarizes the noise monitoring equipment used during the reporting period. Copies of the calibration certificates for noise monitoring are shown in Appendix 3.1

Table 3.3 Construction Noise Monitoring Equipment

Equipment	Manufacturer	Model	No. of Equipment	Serial No.
Sound Level Meter	SVANTEK⁽²⁾	SVAN 971	1	96062
	NTi Audio⁽²⁾	XL3	2	A3A-01231-F0 A3A-01229-F0
	BSWA⁽¹⁾	BSWA 308	4	580005 580006 580008 580013
	BSWA⁽¹⁾	BSWA 308	4	580005 580006 580008 580013
Acoustic Calibrator	RION⁽²⁾	NC-75	3	34724244 34724245 35124529
	Bruel & Kjaer⁽¹⁾	B&K4321	1	2412367
	SVANTEK⁽¹⁾	SV30A	3	24803 24791 24780

Remark:

(1) The noise monitoring equipment was used by First Phase ET during the reporting period.

(2) The noise monitoring equipment was used by Remaining Phase Environmental Team during the reporting period.

3.5 Maintenance and Calibration

3.5.1 Maintenance and calibration procedures are as follows:

· The microphone head of the sound level meter and calibrator were regularly cleaned with a soft cloth;

· The sound level meter and acoustic calibrator were calibrated annually; and

· The accuracy of the sound level meter was checked using an acoustic calibrator generating a known sound pressure level at a known frequency immediately prior to and following each noise measurement. Measurements were accepted as valid only if the calibration level from before and after the noise measurement agree to within 1.0 dB.

3.6 Action and Limit Levels

3.6.1 The Action and Limit levels were established in accordance with the Updated EM&A Manual. Table 3.4 presents the Action and Limit Levels for construction noise. Should non-compliance of the criteria occur, action in accordance with the Event and Action Plan presented in Appendix 3.2 shall be carried out.

Table 3.4 Action and Limit Levels for Construction Noise Monitoring

Time Period	Action	Limit Level
07:00 – 19:00 on normal weekdays	When one or more documented complaints are received	75 dB(A)

3.7 Results and Observations

3.7.1 All noise monitoring was conducted as scheduled in the reporting month. The noise monitoring schedule during the reporting period is shown in the Appendix 2.1.

3.7.2 No Action or Limit levels exceedance was recorded in the reporting period. Details of the results and graphical presentation are shown in Appendix 3.1. The construction noise monitoring results are summarized in Table 3.5. The major noise sources observed during impact noise monitoring are summarized in Table 3.6.

Table 3.5 Summary of Construction Noise Monitoring Results during the Reporting Month

Works Contracts	Monitoring Stations	Noise Levels, L_eq(30min), dB(A)	Baseline Levels, dB(A)	Limit Levels, dB(A)
ND/2024/01	CP-KTN-NMS1⁽¹⁾⁽³⁾	48.2 – 66.9	65.7	75
	CP-KTN-NMS2⁽¹⁾⁽²⁾	52.5 – 61.5	58.6
	CP-KTN-NMS3⁽¹⁾⁽²⁾	51.9 – 55.7	51.6
	CP-KTN-NMS6⁽²⁾	58.1 – 64.7	55.1
	CP-KTN-NMS7⁽¹⁾⁽³⁾	51.7 – 72.2	65.3
ND/2024/04	CP-FLN-NMS4(A)^(1)(3)(4)	72.8 – 74.5	72.0
ND/2024/06	CP-KTN-NMS5⁽¹⁾⁽²⁾	54.0 – 58.0	57.2
ND/2024/06, ND/2024/07	CP-FLN-NMS1⁽²⁾	66.3 – 73.1	69.9
ND/2024/07	CP-FLN-NMS5⁽¹⁾⁽³⁾	66.0 – 68.6	69.7
ND/2024/07	CP-FLN-NMS6⁽³⁾	54.0 – 63.4	54.9

Remarks:

(1) For Free Field measurement, +3 dB(A) was added to the measured results.

(2) The noise monitoring was conducted by First Phase ET during the reporting period.

(3) The noise monitoring was conducted by Remaining Phase Environmental Team during the reporting period.

(4) Alternative monitoring stations to the corresponding original monitoring stations.

Table 3.6 Summary of Observations at Noise Monitoring Stations

Works Contracts	Monitoring Stations	Location		Major Noise Sources
ND/2024/01	CP-KTN-NMS1	Residential Building at Ma Tso Lung		Household noise from nearby village house
	CP-KTN-NMS2	Residential Building at Ma Tso Lung		Road Traffic Noise, Excavator, Mobile crane
	CP-KTN-NMS3	Fung Kong Garden		Road Traffic Noise, Excavator, Crane
	CP-KTN-NMS4	Primary School		N/A⁽¹⁾
	CP-KTN-NMS6	Ho Sheung Heung, Hau Ku ShekAncestral Hall, Hung Shing Temple & Pai Fung Temple and Sin Wai Nunnery		Road Traffic Noise, Excavator
	CP-KTN-NMS7	Oi Lok Home		Road Traffic Noise
ND/2024/04	CP-FLN-NMS4(A)⁽²⁾		Choi Ying House, Choi Po Court (Choi Yuen Estate)	Road Traffic Noise
ND/2024/06	CP-KTN-NMS5	N/A		Road Traffic Noise, Excavator, Train noise
ND/2024/06, ND/2024/07	CP-FLN-NMS1	Belair Monte		Road Traffic Noise, Excavator, Dump Truck, Crane
ND/2024/06, ND/2024/07	CP-FLN-NMS3	Secondary School		N/A⁽¹⁾
ND/2024/07	CP-FLN-NMS5	Man Kok Village		Road Traffic Noise
ND/2024/07	CP-FLN-NMS6	Woodland Crest		Road Traffic Noise

Remarks:

(1) No impact noise monitoring was carried out at the monitoring station. Thus, not applicable (N/A).

(2) Alternative monitoring stations to the corresponding original monitoring stations.

3.7.3 No complaint on construction noise was received during the reporting month, therefore no Action/Limit Level exceedance was recorded.

3.8 Event and Action Plan

3.8.1 Should non-compliance of the noise monitoring criteria occur, actions in accordance with the Event and Action Plan in Appendix 3.4 shall be carried out.

4 Water Quality

4.1 Monitoring Requirement

4.1.1 In accordance with the approved Updated EM&A Manual and EM&A Manual for impact water quality monitoring shall be carried out three days per week at all the designated monitoring stations in during the construction of channel. The measurement periods are specified in Table 4.1. The interval between two sets of monitoring shall not be less than 36 hours.

Table 4.1 Summary of Water Quality Monitoring Locations

New Monitoring Station(s)	Original Monitoring Station ID(s)	Description	Location(s)	Measurement Period
KTN NDA
KTN-CS1	CS1	Control Station for KTN NDA	Centreline of river, upstream of the channel	During construction of channel
KTN-IS1	IS1	Impact Station for KTN NDA	Centreline of river, downstream of the channel	During construction of channel
FLN NDA
FLN-CS1	CS2	Control Station for FLN NDA	Centreline of river, upstream of the channel	During construction of channel
FLN-IS1	IS2	Impact Station for FLN NDA	Centreline of river, downstream of the channel	During construction of channel

4.2 Result and Observations

4.2.1 No construction of channelisation work between KTN-CS1, KTN-IS1, FLN-CS1 and FLN-IS1 were undertaken during the reporting period. Therefore, no water quality monitoring was carried out.

5 Waste Management

5.1.1 Waste generated from the Project include inert construction and demolition (C&D) materials and non-inert C&D wastes in the reporting period. The summarized amount of waste generated by the construction works in related to the Works Contracts in the reporting period is shown in Table 5.1. The cumulative waste flow table of the Project was presented in in Appendix 5.1.

5.1.2 Sorting of construction and demolition (C&D) materials was carried out on site. Sufficient numbers of receptacles were provided for general refuse collection and sorting. Excavated inert C&D materials were reused to minimize the disposal of C&D waste to public fill.

5.1.3 The Contractor is advised to minimize the wastes generated through recycling or reusing. All applicable mitigation measures stipulated in the Updated EM&A Manual and waste management plans will be fully implemented.

Table 5.1 Summary of Waste Generated by the Construction Works from Works Contracts in the Reporting Period

Works Contract(s)	Month	Actual Quantalities of Inert C&D Materials Generated Monthly						Actual Quantities of C&D Wastes Generated Monthly
		Total Quantity Generated	Hard Rock and Lage Broken Concrete	Reused in the Contract	Reused in other Projects	Disposed as Public Fill	Imported Fill	Metals	Paper / Carboard Packing	Plastics	Chemical Waste	Yard Waste recycled in Shredding Facility	Others e.g., general refuse
		(in ‘000m³)	(in ‘000m³)	(in ‘000m³)	(in ‘000m³)	(in ‘000m³)	(in ‘000m³)	(in ‘000kg)	(in ‘000kg)	(in ‘000kg)	(in ‘000kg)	(in ‘000kg)	(in ‘000m³)
ND/2024/01	May 2025	0.000	0.000	0.000	0.000	0.000	123431.730	0.000	0.040	0.000	0.000	0.000	146.456
ND/2024/04	May 2025	0.000	0.000	0.000	0.000	0.000	0.000	0.000	0.000	0.000	0.000	0.000	0.000
ND/2024/06	May 2025	11.955	0.000	0.326	8.269	3.360	0.000	0.008	0.000	0.005	0.000	0.000	0.046
ND/2024/07	May 2025	10.722	0.000	1.363	0.000	0.182	9.122	0.000	0.000	0.000	0.000	0.027	0.027

6 Ecology

6.1 Introduction

6.1.1 This section was derived from the ecological monitoring conducted during the construction phase by the First Phase ET under Service Contract No. NDO 04/2019 Environmental Team for Environmental Monitoring and Audit Works in Construction Phase for the First Phase Development of Kwu Tung North and Fanling North New Development Areas. This approach was undertaken to prevent redundancy in survey efforts.

6.2 Monitoring Requirements

Weekly Site Inspection

6.2.1 Weekly site inspections by the ET from the First Phase of the KTN/FLN NDAs Project for ecological mitigation measures are conducted as part of the overall weekly environmental site inspections. These inspections audit the ecological mitigation measures implemented within the active works area to ensure that the activities do not significantly impact the ecologically sensitive receivers in the active works areas.

Monitoring of Measures to Minimise Disturbance to Water Birds in Ng Tung River, Sheung Yue River, Shek Sheung River and Long Valley

6.2.2 As stipulated in Section 12.3.2.5 of the Updated EM&A Manual, if development under the NDAs project occurs within 200m of Sheung Yue River, Ng Tung River, Shek Sheung River and Long Valley, weekly transect monitoring at high and low tides (above/below 1.5m at Tsim Bei Tsui Station) should be conducted. The monitoring aims to identify and count bird species in the river channels and Long Valley Nature Park (LVNP) and detect any disturbances from construction activities, following the methodology in Table 12.1 of the Updated EM&A Manual. Monitoring in Long Valley should follow the Hong Kong Bird Watching Society (HKBWS) bird monitoring programme's methodology for comparable and comprehensive results.

Monitoring of Measures to Minimise Impacts to Ma Tso Lung Stream and Siu Hang San Tsuen Stream, and Long Valley

6.2.3 As stipulated in Section 12.3.2.14 of the Updated EM&A Manual, aquatic fauna monitoring should be conducted monthly during the wet season (April – October) of the construction phase.

Monitoring of Measures to Minimise Impacts on Ecological Sensitive Habitats from Disturbance and Pollution

6.2.4 As stipulated in Section 12.3.2.17 of the Updated EM&A Manual, measures to minimize impacts should be monitored during the construction phase. The purpose of these surveys is to assess the effectiveness of measures aimed at reducing disturbances and pollution in ecologically sensitive habitats through standard fauna transect surveys.

6.2.5 For this reporting month, only transects that are relevant to the active works of Works Contract ND/2024/01, Contract No. ND/2024/04, Contract No. ND/2024/06 and Contract No. ND/2024/07, were included. The active works for the mentioned contracts are described in Section 1.3.1 of this report and shown in Figure 1.1 and Figure 1.2.

6.2.6 Table 6.1 summarizes the relevant transects and monitoring station to each contract under the remaining phase, categorised under the column “First Phase ET” and “Remaining Phase ET” according to the current survey efforts. The locations of these contracts relative to the monitoring locations are shown in Figure 6.1 and Figure 6.2.

Table 6.1 Summary of Monitoring Activities, Relevant Contracts, and Corresponding Transects

Monitoring Activity	Relevant Works Contract(s)	Relevant Transect(s)/Monitoring Station(s)
Monitoring Activity	Relevant Works Contract(s)	First Phase ET	Remaining Phase ET
Monitoring of Measures to Minimise Disturbance to Water Birds on Ng Tung, Sheung Yue, and Shek Sheung Rivers and Long Valley	ND/2024/01*	T1, T2, T3, T5	-
	ND/2024/02	T1, T2, T3, T5	T4
	ND/2024/03	T1, T2, T3, T5	-
	ND/2024/04*	-	T4
	ND/2024/05	N/A⁽¹⁾	N/A⁽¹⁾
	ND/2024/06*	T1, T2, T3	-
	ND/2024/07*	T1, T2, T3	T4
	ND/2024/08	T1, T2, T3	T4
Monitoring of Measures to Minimise Impacts to Ma Tso Lung Stream and Siu Hang San Tsuen Stream, and Long Valley	ND/2024/01*^	MS_01, MS_02, MS_03, MS_04, MS_05, MS_06, MS_07, MS_08, MS_09, MS_10	-
	ND/2024/02	MS_01, MS_02, MS_03, MS_04, MS_05, MS_06, MS_07, MS_08, MS_09, MS_10	-
	ND/2024/03	N/A⁽²⁾	N/A⁽²⁾
	ND/2024/04*	N/A⁽²⁾	N/A⁽²⁾
	ND/2024/05	N/A⁽²⁾	N/A⁽²⁾
	ND/2024/06*	N/A⁽²⁾	N/A⁽²⁾
	ND/2024/07*^	MS_11, MS_12, MS_13, MS_14, MS_15	-
	ND/2024/08	N/A⁽²⁾	N/A⁽²⁾
Monitoring of Measures to Minimise Impacts on Ecological Sensitive Habitats from Disturbance and Pollution	ND/2024/01*	T1	-
	ND/2024/02	T1, T6	-
	ND/2024/03	T4	-
	ND/2024/04*	N/A⁽³⁾	N/A⁽³⁾
	ND/2024/05	T4, T6	-
	ND/2024/06*	-	T2
	ND/2024/07*	T3	-
	ND/2024/08	T3	-

Remarks:

(1) Contracts that are located relatively far from river channels.

(2) Contracts that are located relatively far from Ma Tso Lung and Siu Hang San Tsuen streams.

(3) Contracts that are located relatively far from the Ecological Sensitive Habitats as identified in the EIA.

(4) * = active works contracts (ND/2024/01, ND/2024/04, ND/2024/06 and ND/2024/07); ^ = monitoring only in April – October.

6.2.7 The details of the relevant monitoring activities are discussed in the succeeding sections.

6.3 Results and Observations

Monitoring of Measures to Minimise Disturbance to Water Birds in Ng Tung River, Sheung Yue River, Shek Sheung River and Long Valley

Monitoring Methodology

6.3.1 Birds identified by their calls but not visually located were recorded as "heard", while those observed flying over the survey area were noted as "in flight." Species of conservation importance were also specified. Additional information at the time of the survey, such as weather conditions, tidal conditions, tide levels, and noticeable natural or anthropogenic activities, were documented. For the avifauna survey, ornithological nomenclature referenced The Avifauna of Hong Kong (Carey et al., 2001), The Birds of Hong Kong and South China (Viney et al., 2005), and the most recent updated lists from other sources (e.g., Hong Kong Bird Watching Society).

Monitoring Parameters

6.3.2 The monitoring parameters are as follows:

· Abundance of birds;

· Types of habitats utilized by birds; and

· Notable bird behaviours such as roosting, feeding, nesting and presence of juveniles.

Monitoring Location

6.3.3 For this reporting month, the First Phase ET conducted avifauna monitoring at Ng Tung River, Sheung Yue River, and Long Valley, while the Remaining Phase ET conducted avifauna monitoring at Shek Sheung River. Specifically, the transect routes relevant for the active works under Works Contract ND/2024/01 are:

· T1. Ng Tung River

· T2. Ng Tung River

· T3. Sheung Yue River and

· T5. Long Valley

relevant transect for Works Contract ND/2024/04 is:

· T4. Shek Sheung River

relevant transects for Works Contract ND/2024/06 are:

· T1. Ng Tung River

· T2. Ng Tung River and

· T3. Sheung Yue River

and the relevant transects for Works Contract ND/2024/07 are:

· T1. Ng Tung River

· T2. Ng Tung River

· T3. Sheung Yue River and

· T4. Shek Sheung River

6.3.4 The above transect routes are summarized in Table 6.1 and shown in Figure 6.2. As the sensitive receivers are large waterbirds and are easily visible, the transect routes only needed to follow one riverbank.

Monitoring Frequency

6.3.5 Avifauna monitoring at high and low tides should be conducted weekly. Additionally, nighttime monitoring in Long Valley should be conducted twice a month from September to April, which is not required for the reporting month.

6.3.6 For this reporting month, waterbird monitoring were conducted by both the First Phase ET (T1, T2, T3 and T5) and Remaining Phase ET (T4). Survey date for each monitoring is shown in Table 6.2.

Table 6.2 Monitoring Programme for Waterbirds Monitoring, May 2025

Week	Date	Transect⁽¹⁾
1	6 May	T4
	8 May	T1, T2
	9 May	T3, T4, T5
2	12 May	T3, T5
	14 May	T4
	16 May	T1, T2, T4
3	19 May	T4
	22 May	T1, T2, T4
	23 May	T3, T5
4	26 May	T1, T2, T4
	27 May	T3, T5
	30 May	T4

Remarks:

(1) Transects T1, T2, T3, and T5 are relevant to Works Contract ND/2024/01; Transect T4 is relevant to Works Contract ND/2024/04; Transects T1, T2, and T3 are relevant to Works Contract ND/2024/06; Transects T1, T2, T3 and T4 are relevant to Works Contract ND/2024/07.

Monitoring Results

6.3.7 For this reporting month, only monitoring results in Transects T1, T2, T3, T4 and T5 are reported as not all of these monitoring data are relevant to active Works Contract ND/2024/01, ND/2024/04, ND/2024/06 and ND/2024/07 as summarised in Table 6.1.

6.3.8 Transect T1 and T2 were conducted along the Ng Tung River. For Transect T1, a total of 3 species of large waterbirds, namely Grey Heron (3 individuals), Great Egret (5 individuals) and Little Egret (9 individuals), were recorded in the reporting month. For Transect T2, a total of 3 species of large waterbirds, namely Grey Heron (7 individuals), Great Egret (4 individuals) and Little Egret (29 individuals), were recorded in the reporting month.

6.3.9 Transect T3 was conducted along the Sheung Yue River. A total of 3 large waterbirds, namely Grey Heron (12 individuals), Great Egret (14 individuals) and Little Egret (191 individuals), were recorded for the reporting month.

6.3.10 Transect T4 was conducted along the Shek Sheung River. A total of 25 species were recorded in the reporting month with 3 species of large waterbirds, namely Grey Heron (5 individuals), Great Egret (5 individuals) and Little Egret (21 individuals).

6.3.11 Transect T5 was conducted in Long Valley Nature Park with the highest species diversity and abundance recorded. A total of 3 species of large waterbirds, namely Great Egret, Intermediate Egret and Little Egret, were also found to utilise the habitat.

6.3.12 Chinese Pond Heron, the most abundant waterbird species recorded during the baseline survey, which is strictly associated with wetlands, was widely noted across different transect routes in the reporting month 125 individuals recorded in total. 9 individuals were noted along Transect T1, 19 individuals along Transect T2, 16 individuals along Transect T3, 32 individuals along Transect T4 and 49 individuals were noted along Transect T5.

6.3.13 Relevant results of the avifauna monitoring conducted by the First Phase ET during this reporting month are detailed in Appendix 6.1a to Appendix 6.1h. Findings of surveys conducted by the Remaining Phase ET during this reporting month are detailed in Appendix 6.1i to Appendix 6.1l.

6.3.14 Table 6.3 summarizes the results of the monitoring of measures to minimize disturbance to waterbirds in Ng Tung River, Sheung Yue River, Shek Sheung River and Long Valley of the reporting month.

Table 6.3 Summary Table of Waterbird Monitoring Results Relative to Corresponding Action and Limit Levels, May, Transects T1, T2, T3, T4 and T5

Monitoring Parameter		Result in Reporting Month (May 2025)	Baseline Level in Corresponding Month (May 2020)	Action Level ⁽¹⁾	Limit Level ⁽²⁾
T1, T2 and T3
Mean abundance of large waterbirds using Ng Tung River, Sheung Yue River and Shek Sheung River ⁽³⁾		69	17	12	8
Mean abundance of Chinese Pond Heron using Ng Tung River, Sheung Yue River and Shek Sheung River		11	8	5	4
T4
Mean abundance of large waterbirds using Shek Sheung River ⁽³⁾	8		3	2	2
Mean abundance of Chinese Pond Heron using Shek Sheung River	8		3	2	2
T5 Long Valley
Mean Abundance of birds (all species) recorded in LVNP		497	408	286	204
Mean abundance of the Chinese Pond Heron		12	14	10	7
Environmental disturbance and damage from activities in LVNP		-	-	Activity likely to cause unacceptable environmental disturbance or damage noted in LVNP.	Activity likely to cause unacceptable environmental disturbance or damage noted in LVNP.

Remarks:

(1) Exceedance of Action Level occurs when the monitoring result is lower than the Action Level.

(2) Exceedance of Limit Level occurs when the monitoring result is lower than the Limit Level.

(3) Large waterbird species for mean abundance calculation include Great Cormorant (Phalacrocorax carbo); Grey Heron (Ardea cinerea); Great Egret (Ardea alba); Intermediate Egret (Ardea intermedia); Little Egret (Egretta garzetta) and Chinese Egret (Egretta eulophotes).

6.3.15 No exceedance in Action or Limit Level was recorded for the reporting month.

Monitoring of Measures to Minimise Impacts to Ma Tso Lung Stream and Siu Hang San Tsuen Stream, and Long Valley

Monitoring Methodology

6.3.16 Monitoring of larger organisms such as fish species will be carried out through direct counting, while sampling aquatic invertebrates will involve kick-netting and sweep-netting. Three replicates will be conducted for invertebrate sampling at each sampling point. During kick-netting, the net will be positioned at a location with the opening facing the water current while disturbing the substrate through kicking to dislodge organisms from the stream bed. Sweep-netting will be applied to water bodies without water current according to on-site conditions. Species observed will be identified to the lowest possible taxonomic level with their relative abundance recorded, with the use of dissecting microscope especially for small organisms not identifiable through the naked eye.

Monitoring Parameters

6.3.17 The monitoring parameters are as follows:

· Species composition and abundance;

· Distribution of invertebrates and fish fauna; and

· Specify species of conservation importance, if any.

Monitoring Locations

6.3.18 For this reporting month, the First Phase ET conducted the aquatic fauna monitoring along Ma Tso Lung Stream and Siu Hang Sang Tsuen Stream. Specifically, the monitoring stations relevant for the active works under Works Contract ND/2024/01 are:

· MS_01	· MS_02	· MS_03	· MS_04	· MS_05
· MS_06	· MS_07	· MS_08	· MS_09	· MS_10

And the relevant monitoring stations for Works Contract ND/2024/07 are:

· MS_11

· MS_12

· MS_13

· MS_14

· MS_15

6.3.19 The above monitoring stations are shown in Figure 6.1 and Figure 6.2.

Monitoring Frequency

6.3.20 As stated in Section 12.3.2.14 of the Updated EM&A Manual, aquatic fauna monitoring should be conducted monthly during the wet season (April – October) during the construction phase.

6.3.21 For this reporting month, aquatic fauna monitoring was conducted by the First Phase ET on 15 May 2025.

Monitoring Results

6.3.22 A total of 24 species of aquatic invertebrates and 7 species of fish were recorded along the Ma Tso Lung Stream and Siu Hang San Tsuen Stream for the reporting month. 1 native species of fish of conservation importance, namely the Predaceous Chub, was recorded at MS_09 and MS_10 for the reporting month, according to the findings of the First Phase ET. A complete species list is enclosed as Appendix 6.2.

6.3.23 3 monitoring stations, as MS_01, MS_05 and MS_12, were found to be dried-up. Thus, no aquatic fauna species were recorded.

6.3.24 Table 6.4 and Table 6.5 summarized the aquatic monitoring results for the reporting month.

Table 6.4 Summary Table of Monitoring Results for Aquatic Invertebrates Relative to Action and Limit Levels, May, Monitoring Station MS_01 – MS_15

Monitoring Station	Result in Reporting Month (May 2025)⁽¹⁾	Baseline Level in Corresponding Month (May 2020)⁽¹⁾	Action Level⁽²⁾	Limit Level⁽³⁾
MS_01	0	N/A	N/A	N/A
MS_02 and MS_03	2	3	2	1
MS_04, MS_06 and MS_07	6	9	6	5
MS_05	0	0	N/A	N/A
MS_08, MS_09 and MS_10	6	8	6	4
MS_11	0	0	N/A	N/A
MS_12	0	0	N/A	N/A
MS_13 and MS_14	5	1	N/A	N/A
MS_15	2	1	N/A	N/A

Remarks:

(1) Number of native species (species richness) recorded.

(2) Exceedance of Action Level occurs when the monitoring result is lower than the Action Level.

(3) Exceedance of Limit Level occurs when the monitoring result is lower than the Limit Level.

Table 6.5 Summary Table of Monitoring Results for Fish Species Relative to Action and Limit Levels, May, Monitoring Station MS_01 – MS_15

Monitoring Station	Result in Reporting Month (May 2025)⁽¹⁾	Baseline Level in Corresponding Month (May 2020)⁽¹⁾	Action Level⁽²⁾	Limit Level⁽³⁾
MS_01	0	0	N/A	N/A
MS_02 and MS_03	0	1	N/A	N/A
MS_04, MS_06 and MS_07	2	3	2	1
MS_05	0	0	N/A	N/A
MS_08, MS_09 and MS_10	1	1	N/A	N/A
MS_11	0	0	N/A	N/A
MS_12	0	0	N/A	N/A
MS_13 and MS_14	0	0	N/A	N/A
MS_15	0	0	N/A	N/A

Remarks:

(1) Number of native species (species richness) recorded.

(2) Exceedance of Action Level occurs when the monitoring result is lower than the Action Level.

(3) Exceedance of Limit Level occurs when the monitoring result is lower than the Limit Level.

6.3.25 No exceedance in Action or Limit Level was recorded for the reporting month.

Monitoring of Measures to Minimise Impacts on Ecological Sensitive Habitats from Disturbance

Monitoring Methodology

Terrestrial Mammal

6.3.26 Mammal surveys were conducted both during the day and at night along transect routes that may be potentially utilized by terrestrial mammals. Observations included field signs such as droppings, footprints, diggings, and burrows left by larger terrestrial mammals. Any mammals directly observed were recorded, and identification was as accurate as possible based on the field signs.

6.3.27 Bat surveys were conducted along the transect routes shortly after sunset using a bat detector to record echolocation calls. The relative abundance of the species encountered were estimated with reference to the baseline monitoring results, using a scale from one (species recorded within transect routes) to three (dominant species within transect routes), for comparison between baseline and current monitoring results. Mammal nomenclature followed Shek (2006).

6.3.28 Echolocation calls of bats were recorded using a bat detector, which listed possible bat species with similar call patterns and frequencies. The structure of the recorded echolocation calls was later analysed to identify species as accurately as possible. Due to the lack of literature on echolocation call structures, field identification of some bat species in Hong Kong is challenging, and some species could only be identified to the genus level or remain unidentified from the recordings.

6.3.29 Identification of bat species encountered in the surveys was made by considering the possible species suggested by the bat detector, their distribution in Hong Kong, previous records in the EIA Report and Baseline Monitoring Report, and the structure of the echolocation calls (including call structure, frequency, duration, and inter-pulse interval) with reference to relevant literature.

Herpetofauna (Amphibians and Reptiles)

6.3.30 Both daytime and nighttime amphibian surveys were conducted whenever possible following or during periods of rainfall, focusing on areas suitable for amphibians (e.g., forests, shrublands, grasslands, streams, ponds, marshes, etc.). Calling amphibians were recorded, supplemented by visual observations of eggs, tadpoles, adult frogs, and toads.

6.3.31 Active searches of appropriate microhabitats, such as stones, pond bunds, crevices, and leaf debris, was primarily conducted. Observations of exposed, basking, and foraging reptiles were also carried out. Nomenclature for amphibians and reptiles followed Chan et al. (2005) and Karsen et al. (1998), respectively.

Butterfly and Odonates

6.3.32 Butterflies and dragonflies observed along the transects were identified and counted. Special attention was given to their preferred habitats, such as watercourses, fishponds, and vegetated areas. Nomenclature and protection status of the species followed Lo et al. (2005) for butterflies and Tam et al. (2011) for dragonflies.

Monitoring Parameters

6.3.33 The monitoring parameters are as follows:

· Species composition;

· Abundance;

· Distribution for fauna observed; and

· Species of conservation importance would be specified.

Monitoring Location

6.3.34 According to the Updated EM&A Manual, the transect routes for monitoring of ecologically sensitive receivers should follow the following:

· T1. Ma Tso Lung riparian zone and associated wetland habitats; green belt areas E1-8, D1-8 and G1-3 in KTN NDA; AGR zone C2-4 and C2-2 in KTN NDA, and area north of Ng Tung River;

· T2. Fanling North Freshwater Service Reservoir

· T3. Area west of Siu Hang San Tsuen Stream;

· T4. South side of Fanling Highway and Castle Peak Road in the vicinity of Pak Shek Au;

· T5. Area west and east of the southern limit of the FLN NDA work area; and

· T6. Areas in the western part of KTN.

6.3.35 The above transects are shown in Figure 6.1 and Figure 6.2. Relevant transect to Works Contract ND/2024/01 is Transect T1 which covers areas of Ma Tso Lung riparian zone and associated wetland habitats, green belt areas E1-8, D1-8 and G1-3 in KTN NDA, AGR zone C2-4 and C2-2 in KTN NDA, and areas North of Ng Tung River; relevant transect to Works Contract ND/2024/06 is Transect T2 which covers areas of the Fanling North Freshwater Service Reservoir; and for Works Contract ND/2024/07 is Transect T3 which covers the area west of Siu Hang San Tsuen stream.

Monitoring Frequency

6.3.36 Monthly monitoring should be conducted for non-aquatic fauna, including terrestrial mammals, insects (butterflies and odonates), and herpetofauna. For this reporting month, monthly monitoring for non-aquatic fauna were conducted by both the First Phase ET (T1 and T3) and Remaining Phase ET (T2). Survey dates for each monitoring are shown in Table 6.6.

Table 6.6 Monitoring Programme for Non-aquatic Fauna Monitoring, May 2025

Responsible ET	Date		Transect⁽¹⁾
First Phase ET		13 May	T1
First Phase ET		20 May	T3
Remaining Phase ET		21 May	T2

Remarks:

(1) Transect T1 is relevant to Works Contract ND/2024/01; Transect T2 is relevant to Works Contract ND/2024/06; Transect T3 is relevant to Works Contract ND/2024/07.

Monitoring Results

Terrestrial Mammals

6.3.37 A total of 3 species of terrestrial mammals were recorded along Transect T1 with 1 native species of conservation importance, namely Japanese Pipistrelle, was noted. A total of 5 species of terrestrial mammals, namely Chinese Noctule, Japanese Pipistrelle, Least Pipistrelle, Lesser Bamboo Bat and Lesser Yellow Bat, were recorded along Transect T2. A total of 2 species of terrestrial mammals were noted along Transect T3 with 1 native species of conservation importance, namely Japanese Pipistrelle, was noted. All captioned bat species are of conservation importance. A complete species list is enclosed as Appendix 6.3.

Herpetofauna (Amphibians and Reptiles)

6.3.38 A total of 9 herpetofauna species were recorded along Transect T1, with 5 species of amphibians (Asian Common Toad, Ornate Pigmy Frog, Paddy Frog, Günther’s Frog and Brown Tree Frog) and 4 species of reptiles (Changeable Lizard, Chinese Gecko, Bowring’s Gecko and Red-necked Keelback). All species are considered as widespread natives. A total of 9 herpetofauna species were recorded along Transect T2, including 5 species of amphibians (Asian Common Toad, Ornate Pigmy Frog, Paddy Frog, Günther’s Frog and Brown Tree Frog) and 4 species of reptiles (Long-tailed Skink, Chinese Gecko, Bowring’s Gecko and Bamboo Snake). All species are considered common and widespread. No species of conservation importance were noted. A total of 3 herpetofauna species were recorded along Transect T3 with 2 species of amphibians (Asian Common Toad and Paddy Frog) and 1 species of reptile (Chinese Gecko). All species are considered as widespread natives, and no species of conservation importance were noted. A complete species list is enclosed as Appendix 6.3.

Butterfly and Odonates

6.3.39 A total of 23 butterfly species were recorded along Transect T1, with 2 rare species, namely the Red-breast Jezebel and Small Cabbage White, were of conservation importance. Other species recorded are considered as widespread and common natives. 8 odonate species were recorded along Transect T1. 1 species of conservation importance, namely the Scarlet Basker, was noted. Other species recorded are considered common natives. A total of 16 butterfly species were recorded along Transect T2. All species are considered widespread in Hong Kong with no species of conservation importance noted. 3 species of odonates, namely Common Blue Skimmer, Wandering Glider and Variegated Flutterer, were recorded along Transect T2. All species are considered as locally common. No odonate species of conservation importance were noted. A total of 12 butterfly species were recorded along Transect T3. All species recorded are considered as common natives and no species of conservation importance was noted. 6 odonate species were recorded along Transect T3. All species recorded are considered as common and widespread with no species of conservation importance noted. A complete species list is enclosed as Appendix 6.3.

Summary of Monitoring Results

6.3.40 Monitoring for non-aquatic (terrestrial mammals, butterflies, dragonflies, and herpetofauna) taxa was conducted by both the First Phase and Remaining Phase ETs. Relevant results of the non-aquatic fauna monitoring conducted by the First Phase ET during this reporting month are detailed in Appendix 6.3a to Appendix 6.3d. Findings of surveys conducted by the Remaining Phase ET during this reporting month are detailed in Appendix 6.3e to Appendix 6.3h.

6.3.41 Tables 6.7 summarizes the monitoring results of Transect T1, T2 and T3 for this reporting month.

Table 6.7 Summary Table of Monitoring Results for Non-aquatic Fauna Relative to Action and Limit Levels, May, Transect T1, T2 and T3

Monitoring Parameter	Result in Reporting Month (May 2025)⁽¹⁾	Baseline Level in Corresponding Month (May 2020)⁽¹⁾	Action Level⁽²⁾	Limit Level⁽³⁾
T1
Terrestrial Mammals	1	1	N/A	N/A
Herpetofauna	9	7	5	4
Odonates	8	8	6	4
Butterflies	23	11	8	6
T2
Terrestrial Mammals	5	0	N/A	N/A
Herpetofauna	9	1	N/A	N/A
Odonates	3	3	2	1
Butterflies	16	5	4	3
T3
Terrestrial Mammals	1	1	N/A	N/A
Herpetofauna	3	4	3	2
Odonates	6	9	6	5
Butterflies	12	6	4	3

Remarks:

(1) Number of species (species richness) recorded; the results in the reporting month for terrestrial mammals, herpetofauna and odonates are calculated based on the number of native species recorded along the transects.

(2) Exceedance of Action Level occurs when the monitoring result is lower than the Action Level.

(3) Exceedance of Limit Level occurs when the monitoring result is lower than the Limit Level.

6.3.42 No exceedance in Action or Limit Level was recorded for the reporting month.

Details of the Influencing Factors

6.3.43 The details of the influencing factors were adopted from the observations of the First Phase ET. During the monitoring of measures to minimize disturbance to waterbirds in Long Valley and Sheung Yue River, anthropogenic activities such as excavation and other construction activities were observed near Long Valley. It should also be noted that the Long Valley Nature Park has been opened to the public since 09 November 2024. Potential increase in people visiting the park may potentially impact the habitats in Long Valley and cause disturbances to the bird communities in this area. Construction works were also observed along Sheung Yue River.

6.3.44 During the monitoring of measures to minimize disturbance to waterbirds in Ng Tung River, various anthropogenic activities were observed, such as construction works along Transect T2, recreational use of remote-control boats and toy helicopters in both Transects T1 and T2, and recreational fishing along these two transects.

Survey Summary

6.3.45 All ecological monitoring surveys for the reporting month have been carried out as scheduled, with no exceedances in Action or Limit Level were noted for ecological monitoring surveys for the reporting month.

6.4 Event and Action Plan

6.4.1 Should non-compliance of the ecological monitoring criteria occur, actions in accordance with the Event and Action Plan in Appendix 6.4 shall be carried out.

7 Landscape and Visual

7.1 Audit Requirements

7.1.1 According to the approved EM&A manual and Updated EM&A Manual for the First Phase, site audits should be undertaken at least once every two weeks during the construction period, by a Registered Landscape Architect (RLA). Particularly, to check that the proposed landscape and visual mitigation measures are properly implemented and maintained as per their intended objectives. Mitigation measures recommended in the EIA Report as the audit requirements including, preservation of existing vegetation, transplanting of affected trees, compensatory tree planting, control of night-time lighting glare, erection of decorative screen hoarding and management of construction activities and facilities.

7.2 Results and Observations

7.2.1 Bi-weekly landscape and visual site audits were carried out by a Registered Landscape Architect (RLA) on 9 and 20 May 2025 for ND/2024/01, 13 and 30 May 2025 for ND/2024/04, 7 and 19 May 2025 for ND/2024/06, 8 and 22 May 2025 for ND/2024/07. No particular observation was recorded in this reporting period.

7.3 Event and Action Plan

7.3.1 Should any non-compliance of the criteria occur, action in accordance with the Event and Action Plan in Appendix 7.1 shall be followed.

8 Land Contamination (Ambient Arsenic Monitoring)

8.1 Monitoring Requirements

8.1.1 According to the approved EM&A Manual and Updated EM&A Manual for the First Phase, an ambient arsenic monitoring is required to be conducted in KTN during the clean-up processes of arsenic containing soil and the construction phase.

8.1.2 The RSP concentration was measured by HVS equipped with PM10 selector (PM10 HVS) following the "Reference Method for the Determination of Particulate Matter as PM10 in the Atmosphere" Part 50 Chapter 1 Appendix J, Title 40 of the Code of Federal Regulations of the USEPA.

8.1.3 The Dust-laden air was drawn through PM10 HVS fitted with a conditioned pre-weighting filter paper, at a controlled rate. After sampling for 24-hour, the filter paper with retained PM10 particulates was collected and returned to the laboratory for drying in a desiccators followed by accurate weighting. 24-hour average RSP levels were calculated from the ratio of the mass of PM10 particulates retained on the filter paper to the total volume of air sampled.

8.1.4 The weighted filter paper was prepared for arsenic testing through a "Hot Acid Extraction Procedure". The extracted material was tested for arsenic by using Inductively Coupled Plasma/Mass Spectrometry (ICP/MS). The extraction and testing were referenced to the following methods:

· Compendium Method 1O-3.1 Selection, Preparation and Extraction of Filter Material, Center for Environmental Research Information, Office of Research and Development, USEPA, June 1999; and Compendium Method 1O-3.5 determination of Metals in Ambient Particulate Matter using Inductively Coupled Plasma/Mass Spectrometry (ICP/MS., Center for Environmental Research Information, Office of Research and Development, USEPA, June 1999.

8.2 Monitoring Locations

8.2.1 Ambient arsenic monitoring was conducted at the monitoring station(s) under the Work Contract(s), as shown in Table 8.1 describes the location of the ambient arsenic monitoring station. The location of the ambient arsenic monitoring station is presented in Figure 8.1.

Table 8.1 Location of Ambient Arsenic Monitoring station

Monitoring Station(s)	Location(s)	Works Contract(s)
KTN-DMS-4A⁽¹⁾⁽²⁾	Temporary Structure at Pak Shek Au	ND/2024/01

Remarks:

(1) Monitoring at the original location of KTN-DMS-4 (originally proposed in the approved EM&A Manual) was denied as there was no electricity supply. An alternative location (KTN-DMS-4A) was proposed by First Phase ET.

(2) The ambient arsenic monitoring was conducted by First Phase ET during the reporting period.

8.3 Monitoring Equipment

8.3.1 Table 8.2 summarises the equipment used in the ambient arsenic monitoring. Copies of the calibration certificates for ambient arsenic monitoring are shown in Appendix 8.1

Table 8.2 Ambient Arsenic Monitoring Equipment

Monitoring

Station

Equipment

Manufacturer

Model

No. of Equipment

KTN-DMS-4A⁽¹⁾⁽²⁾

Calibrator

TISCH

TE-5025A

HVS Sampler (RSP)

TISCH

TE-6070X

Remarks:

(2) The ambient arsenic monitoring was conducted by First Phase ET during the reporting period.

8.4 Monitoring Parameters, Frequency and Duration

8.4.1 Table 8.3 summarises the monitoring parameters and frequencies of ambient arsenic during the clean-up processes of arsenic-containing soil and construction. The ambient arsenic monitoring schedule for the reporting month shown in Appendix 2.1.

Table 8.3 Impact Ambient Arsenic Monitoring Parameters, Frequency and Duration

Parameters	Frequency⁽¹⁾
24-hr RSP (Ambient Arsenic)	Once/ 6 days

Remark:

1. The ambient arsenic monitoring was conducted by First Phase ET during the reporting period.

8.5 Monitoring Methodology and QA/QC Procedure

Instrumentation

8.5.1 HVS (GMW PM10 (TE6070X)) complete with appropriate sampling inlets was employed for 24-hour RSP monitoring. The sampler was composed of a motor, a filter holder, a flow controller and a sampling inlet and its performance specification complied with that required by USEPA Standard Title 40, Code of Federation Regulations Chapter 1 (Part 50).

8.5.2 The following guidelines were adopted during the installation of HVS:

· a horizontal platform with appropriate support to secure the samplers against gusty wind was provided;

· no two samplers was placed less than 2 meters apart;

· the distance between the sampler and an obstacle, such as buildings, was at least twice the height that the obstacle protrudes above the sampler;

· a minimum of 2 meters of separation from walls, parapets and penthouses was required for rooftop samplers;

· a minimum of 2 meters separation from any supporting structure, measured horizontally was required;

· no furnace or incinerator flue was nearby;

· airflow around the sampler was unrestricted;

· the sampler was more than 20 meters from the dripline;

· any wire fence and gate, to protect the sampler, were not cause any obstruction during monitoring;

· permission was obtained to set up the samplers and to obtain access to the monitoring stations; and

· a secured supply of electricity was needed to operate the samplers

Operating/analytical procedures for the operation of HVS

· Prior to the commencement of the dust sampling, the flow rate of the high volume sampler was properly set (between 1.1 m³ /min. and 1.4 m³ /min.) in accordance with the manufacturer's instruction to within the range recommended in USEPA Standard Title 40, CFR Part 50;

· The power supply was checked to ensure the sampler worked properly. On sampling, the sampler was operated for 5 minutes to establish thermal equilibrium before placing any filter media at the designated air monitoring station;

· The filter holding frame was then removed by loosening the four nuts and a weighted and conditioned filter was carefully centered with the stamped number upwards, on a supporting screen;

· The shelter lid was closed and secured with the aluminum strip;

· After sampling, the filter was removed and sent to the Wellab Ltd. for weighing. The elapsed time was also recorded; and

· Before weighing, all filters were equilibrated in a conditioning environment for 24 hours. The conditioning environment temperature was between 25°C and 30°C and did not vary by more than ±3°C; the relative humidity (RH) was < 50% and did not vary by more than ±5%. A convenient working RH was 40%. Weighing results were further analysis of RSP concentrations collected by each filter.

8.6 Maintenance/Calibration

8.6.1 The following maintenance/calibration was required for the HVS:

· The high volume motors and their accessories were properly maintained. Appropriate maintenance such as routine motor brushes replacement and electrical wiring checking were made to ensure that the equipment and necessary power supply were in good working condition; and

· High volume samplers were calibrated at bi-monthly intervals using TE-5025A Calibration Kit throughout all stages of the ambient arsenic monitoring.

8.7 Laboratory Measurement / Analysis

8.7.1 Quartz filters of size 8” x 10” were labelled before sampling. A HOKLAS accredited laboratory, Wellab Ltd., was responsible for the preparation of 24-hour conditioned and pre-weighed filter papers for the monitoring team. The balance for weighting filter paper was regularly calibrated against a traceable standard.

8.7.2 All filters, which were prepared and equilibrated in the conditioning environment for 24 hours before weighing. The conditioning environment temperature was around 25 °C and not variable by more than ±3 °C; the relative humidity (RH) was < 50% and not variable by more than ±5%. A convenient working RH was 40%.

8.7.3 Wellab Ltd. (HOKLAS Registration No. HOKLAS083), was responsible for the extraction and testing procedure for Arsenic and comprehensive quality assurance and quality control programmes were conducted.

8.8 Result and Observations

8.8.1 The ambient arsenic monitoring results are summarised in Table 8.4.

Table 8.4 Result Summary Against Action and Limit Levels for 24-hour RSP Monitoring Results (Ambient Arsenic)

Contract No.	Monitoring Date	Monitoring Station	Concentration (ƞg/m³)	AL (ƞg/m³)	LL (ƞg/m³)
ND/2024/01	02/05/2025	KTN-DMS4A*	6.08	9.36	11.7
	08/05/2025		5.42
	14/05/2025		4.67
	20/05/2025		5.54
	26/05/2025		5.15
	30/05/2025		4.05

Remark:

* The 24-hour RSP monitoring for ambient arsenic was conducted by First Phase ET during the reporting period.

8.8.2 All ambient arsenic monitoring was conducted as scheduled in the reporting month. No AL or LL exceedances were recorded.

8.9 Event and Action Plan

8.9.1 Should any non-compliance of the criteria occur, actions in accordance with the Event/Action Plan in Appendix 8.2 shall be carried out.

9 Landfill Gas Monitoring

9.1 Monitoring Requirements

9.1.1 In accordance with the updated EM&A Manual, monitoring of landfill gas (LFG) is required for the construction works within the 250m Landfill Consultation Zone of Ma Tso Lung (MTLL, close to KTN NDA) during the construction phase. This section presents the results of landfill gas measurements performed by the Contractor.

9.1.2 The MTLL is situated in the vicinity of the KTN NDA. A portion of the development falls within the 250m Landfill Consultation Zone of MTLL.

9.2 Monitoring Parameters and Frequency

9.2.1 Monitoring parameters for Landfill gas monitoring include Methane, Carbon dioxide and Oxygen.

9.2.2 Monitoring According to the mitigation measures of the updated EM&A Manual, measurements of the following frequencies should be carried out according to the monitoring requirements and procedures specified in Paragraphs 8.23 to 8.28 of EPD's Guidance Note, “LANDFILL GAS HAZARD ASSESSMENT GUIDANCE NOTE”.

9.2.3 The frequency of monitoring of LFG was made reference to the updated EM&A Manual - Monitoring of any LFG which may be migrated to the site should be undertaken during construction of the infrastructure and the development within the Consultation Zone and within MTLL when the works involve confined spaces. Routine gas monitoring should be undertaken during groundwork construction and in all excavations. Monthly gas monitoring should also be conducted for set up on site such as offices, stores etc.

9.3 Monitoring Locations

9.3.1 As confirmed by the Supervisor Team, no ground disturbance works were carried out in the work area within 250m Landfill Consultation Zone of Ma Tso Lung Landfill including construction of the infrastructure, development works, excavation works and works involve confined spaces. Routine gas monitoring should be undertaken during groundwork construction and in all excavations. Thus, in this reporting month, the area is not required to be monitored for landfill gas are shown below.

Ø Excavation Locations: N/A

Ø Manholes and Chambers: N/A

Ø Relocation of monitoring wells: N/A

Ø Any other Confined Spaces: N/A

9.4 Result and Observations

9.4.1 As confirmed by the Supervisor Team, no ground disturbance works were carried out in the work area within 250m Landfill Consultation Zone of Ma Tso Lung Landfill including construction of the infrastructure, development works, excavation works and works involve confined spaces. Routine gas monitoring should be undertaken during groundwork construction and in all excavations. Therefore, no landfill gas monitoring was carried out.

10 Environmental Site Inspection and Audit

10.1 Implementation Status of Environmental Mitigation Measures

10.1.1 Site inspections were carried out on a weekly basis to monitor the implementation of proper environmental pollution control and mitigation measures under the Contract. In the reporting period, Works Contract No. ND/2024/01 on 9, 13, 20 and 27 May 2025. For Works Contact No. ND/2024/04 were carried out on 13, 23 and 30 May 2025. For Works Contact No. ND/2024/06 were carried out on 7, 14, 19 and 30 May 2025. For Works Contract No. ND/2024/07 were carried out on 8, 15, 22 and 29 May 2025.

10.1.2 Some major environmental deficiencies were observed during weekly site inspection in the report period and some general reminders regarding environmental aspects were given to the Contractor. Key observations and reminders observed during the site inspections at Works Contract No. ND/2024/01, ND/2024/04, ND/2024/06 and ND/2024/07 in the reporting period are summarized in Table 10.1.

Table 10.1 Site Observations at Works Contract No. ND/2024/01, ND/2024/04, ND/2024/06 and ND/2024/07 during the Reporting Period

Works Contracts	Inspection Date	Key Observations/ Reminders	Follow-up Action
ND/2024/01	09 May 2025	Observation: Nil	Nil
Reminder: Nil	Nil
13 May 2025	Observation: 1. Water spraying on haul road at Portion 40 shall be conducted regularly to avoid fugitive dust emissions.	1. Water spraying was provided to avoid fugitive dust emission. (Rectified on 13 May 2025)
Reminder: Nil	Nil
20 May 2025	Observation: Nil	Nil
Reminder: 1. The contractor was reminded to clear the accumulated slit regularly on the temporary drainage channel at Portion 40 to ensure the efficiency of the drainage channel. 2. The contractor was reminded to ensure that preventive/ precautionary measures for water quality impacts are in place along the edge of Portion 59 in order to avoid potential muddy runoff from being washed into the near-by drainage channel, especially during heavy rainfall events.	Nil
27 May 2025	Observation: Nil	Nil
Reminder: Nil	Nil
ND/2024/04	13 May 2025	Observation: 1. The NRMM labels that affixed onto the machineries (i.e. excavator and diesel generator) at Portion 1 should be printed in colour instead of being printed in B&W with use of pain paper or the one in blue. The Contractor was reminded to have appropriate NRMM label affixed onto the machineries.	1. The NRMM label was renewed and provided onto the machinery. (Rectified on 15 May 2025)
Reminder: Nil	Nil
23 May 2025	Observation: 1. Drip tray shall be provided under the portable diesel generator to avoid land contamination by oil spill.	1. Drip tray was provided under the portable diesel generator. (Rectified on 23 May 2025)
Reminder: Nil	Nil
30 May 2025	Observation: Nil	Nil
Reminder: 1. The Contractor was reminded to clear the near-by earth materials on a regular basis in order to avoid the materials from being entering the drainage channel being covered by plastic trenching cover	Nil
ND/2024/06	07 May 2025	Observation: Nil	Nil
Reminder: Nil	Nil
14 May 2025	Observation: Nil.	Nil
Reminder: 1. The contractor was reminded that water spraying should be conducted regularly at Portion D to avoid fugitive dust emission.	Nil
19 May 2025	Observation: Nil	Nil
Reminder: Nil	Nil
30 May 2025	Observation: 1. The Contractor was reminded that the accumulated silty materials in car parking area at Portion A should be cleared regularly in order to avoid the materials being brought to haul road by vehicles' wheels 2. The Contractor was reminded that silty runoff shall be properly treated through desilting process and ensure that all surface runoff shall be directed to the on-site wastewater treatment facilities (e.g. sump pits) for temporary treatment. 3. The Contractor was reminded that drip tray should be provided to portable diesel generator for oil spilling avoidance	1. The accumulated silty materials in car parking area at Portion A was cleaned. (Rectified on 30 May 2025) 2. Silty runoff was treated through desilting process and ensured that all surface runoff was directed to the on-site wastewater treatment facilities. (Rectified on 30 May 2025) 3. Drip tray was provided under the portable diesel generator. (Rectified on 30 May 2025)
Reminder: Nil	Nil
ND/2024/07	08 May 2025	Observation: Nil	Nil
Reminder: Nil	Nil
15 May 2025	Observation: Nil	Nil
Reminder: Nil	Nil
22 May 2025	Observation: Nil	Nil
Reminder: 1. The Contractor was reminded to clear the temporary waste storage area regularly to reach good site practice.	Nil
29 May 2025	Observation: Nil	Nil
Reminder: Nil	Nil

Works Contracts

Inspection Date

Key Observations/ Reminders

Follow-up Action

ND/2024/01

09 May 2025

Observation:

Nil

Reminder:

Nil

13 May 2025

Observation:

1. Water spraying on haul road at Portion 40 shall be conducted regularly to avoid fugitive dust emissions.

1. Water spraying was provided to avoid fugitive dust emission. (Rectified on 13 May 2025)

Reminder:

Nil

20 May 2025

Observation:

Nil

Reminder:

1. The contractor was reminded to clear the accumulated slit regularly on the temporary drainage channel at Portion 40 to ensure the efficiency of the drainage channel.

2. The contractor was reminded to ensure that preventive/ precautionary measures for water
quality impacts are in place along the edge of Portion 59 in order to avoid potential muddy runoff from being washed into the near-by drainage channel, especially during heavy rainfall events.

Nil

27 May 2025

Observation:

Nil

Reminder:

Nil

ND/2024/04

13 May 2025

Observation:

1. The NRMM labels that affixed onto the machineries (i.e. excavator and diesel generator) at Portion 1 should be printed in colour instead of being printed in B&W with use of pain paper or the one in blue. The Contractor was reminded to have appropriate NRMM label affixed onto the machineries.

1. The NRMM label was renewed and provided onto the machinery. (Rectified on 15 May 2025)

Reminder:

Nil

23 May 2025

Observation:

1. Drip tray shall be provided under the portable diesel generator to avoid land contamination by oil spill.

1. Drip tray was provided under the portable diesel generator. (Rectified on 23 May 2025)

Reminder:

Nil

30 May 2025

Observation:

Nil

Reminder:

1. The Contractor was reminded to clear the near-by earth materials on a regular basis in order to avoid the materials from being entering the drainage channel being covered by plastic trenching cover

Nil

ND/2024/06

07 May 2025

Observation:

Nil

Reminder:

Nil

14 May 2025

Observation:

Nil.

Nil

Reminder:

1. The contractor was reminded that water spraying should be conducted regularly at Portion D to avoid fugitive dust emission.

Nil

19 May 2025

Observation:

Nil

Reminder:

Nil

30 May 2025

Observation:

1. The Contractor was reminded that the accumulated silty materials in car parking area at Portion A should be cleared regularly in order to avoid the materials being brought to haul road by vehicles' wheels

2. The Contractor was reminded that silty runoff shall be properly treated through desilting process and ensure that all surface runoff shall be directed to the on-site wastewater treatment facilities (e.g. sump pits) for temporary treatment.

3. The Contractor was reminded that drip tray should be provided to portable diesel generator for oil spilling avoidance

1. The accumulated silty materials in car parking area at Portion A was cleaned. (Rectified on 30 May 2025)

2. Silty runoff was treated through desilting process and ensured that all surface runoff was directed to the on-site wastewater treatment facilities. (Rectified on 30 May 2025)

3. Drip tray was provided under the portable diesel generator. (Rectified on 30 May 2025)

Reminder:

Nil

ND/2024/07

08 May 2025

Observation:

Nil

Reminder:

Nil

15 May 2025

Observation:

Nil

Reminder:

Nil

22 May 2025

Observation:

Nil

Reminder:

1. The Contractor was reminded to clear the temporary waste storage area regularly to reach good site practice.

Nil

29 May 2025

Observation:

Nil

Reminder:

Nil

10.1.3 According to the EIA Study Report, Environmental Permit, contract documents and Updated EM&A Manual, the mitigation measures detailed in the documents should be implemented as much as practical during the reporting period. An updated implementation status of environmental mitigation measures is provided in Appendix 1.3.

11 Summary of Monitoring Exceedance, Complaints, Notification of Summons and Prosecutions

11.1 Summary of Exceedance

11.1.1 No Action Level or Limit Level exceedance was recorded for air quality monitoring in the reporting period.

11.1.2 No Action Level or Limit Level exceedance was recorded for construction noise monitoring in the reporting period.

11.1.3 No Action Level or Limit Level exceedance was recorded for ambient arsenic monitoring in the reporting period.

11.1.4 No Action Level or Limit Level exceedance was recorded for ecological monitoring in the reporting period.

11.2 Summary of Environmental Non-Compliance

11.2.1 No environmental non-compliance was recorded in the reporting period.

11.3 Summary of Environmental Complaint

11.3.1 No environmental complaint was received in the reporting period. The summary of environmental complaint is presented in Appendix 11.1.

11.4 Summary of Environmental Summon and Successful Prosecution

11.4.1 There was no successful environmental prosecution or notification of summons received since the Project commencement. The summary of environmental summon and successful prosecution is presented in Appendix 11.1.

12 Future Key Issues

12.1 Works and Potential Environmental Issues in the next Reporting Period

12.1.1 The upcoming construction works programme, and the construction works area of the Project are presented in Appendix 1.1. Works to be undertaken in the next reporting period are summarized below:

Contract No. ND/2024/01

· All Site Resumption Area(s)

1. Tree survey

2. Site Clearance

· Portion XL (40)

1. Excavation, Mixing with General fill & Backfilling

2. Construct Retaining Wall & Backfilling

· Portion LIX (59)

1. Site Clearance

2. Setting Up including T&C of High Arsenic-Containing Soil (HAS) Treatment Plant

Contract No. ND/2024/03

· Portion XVI

1. Site Clearance and Tree Works

2. Watermain and Sewer Pipe Laying

· Portion IX

1. Asbestos Removal Works

· Portion XI

1. Site Clearance and Tree Works

2. Ground Investigation

· TTA stage 1 Works

1. Tree Works

2. Demolish of Central Divider & Barrier

· TTA stage 1B

1. Site Clearance

· TTA stage 3

1. Predrilling & Piling Works

· Works Areas – WA1, WA2, WA3 & WA4

1. Site Clearance and Site Formation

2. Hoarding Works

3. Asbestos Removal Works

Contract No. ND/2024/04

· Site Clearance

· Site Establishment

· Tree works

· Demolition of existing structures

· Pre-drilling

Contract No. ND/2024/06

· Forming Haul Road beside Existing THFWSR For Excavation Works of Portion A;

· Transplantation of fern (2nd batch);

· Ground investigation works

· Slope trimming and soil nailing works of cut slope S1 & S2 / access road of Portion A;

· Preservation Works for Plant with Conservation Importance (2nd Stage);

· Demolition of DN2000 pipes and associated thrust blocks of Portion D &

· Watermains laying works at Fu Tei Au Road of Portion C

Contract No. ND/2024/07

· Site Clearance

· Site Formation

· Construction of Site Accommodation

· Pre-bored Socketed H Pile Construction

· Sheet Piling

· Trial Pit Excavation

· Foundation Works at Footbridge FB4 &FB5

· Tree Felling & Transplantation

· Asbestos Containing Materials Survey

· Archaeological Impact Assessment

· Construction of Underground Utilities (subject to TMLG approval)

· Land Contamination Investigation

· Internal Movement, Importation & Exportation of C&D materials

12.1.2 Potential environmental impacts arising from the above construction activities are mainly associated with construction noise impact, water quality impact, ecological impact, waste management, and landscape and visual.

12.2 Recommendation

12.2.1 The key environmental mitigation measures for the Project in the coming reporting period expected to be associated with the construction activities include:

Dust

• Regular watering to reduce dust emissions from exposed site surface;

• Stockpile of dusty materials shall be covered entirely by impervious sheeting;

• Provide vehicles washing facilities at all site exits to wash away any dusty materials from vehicle body;

• NRMM Labels should be displayed on the applicable equipment on site by the Contractor;

• Provision of water sprinklers along the haul road for dust suppression.

Noise

• Only well-maintained plant should be operated on-site, and plant should be maintained regularly during the construction programme; and

• Quality Powered Mechanical Equipment (QPME) should be adopted as far as possible.

Water Quality

• No effluent discharge would be allowed before acquired the effluent discharge license;

• Surface run-off from construction sites should be discharged into dedicated discharge point via adequately designed sand/ silt removal facilities;

• Channels/ earth bunds/ sandbags barriers should be provided on site to properly direct stormwater to silt removal facilities;

• Silt removal facilities, channels and manholes should be maintained, and the deposited silt and grit should be removed regularly;

• Open stockpiles of construction materials on sites should be covered with tarpaulin or similar fabric during rainstorms; and

• Perimeter channels should be provided on site boundaries where necessary to intercept stormwater run-off from outside the site so that it will not wash across the site.

Waste Management

• Provision of sufficient waste disposal points and regular collection of waste;

• Regular cleaning and maintenance programme for drainage system; and

• Chemical containers shall be stored with drip tray underneath.

Landscape and Visual

• Construction activities shall be carefully designed to minimize impact on existing retained trees

Land Contamination

• Stockpiling site(s) should be lined with impermeable sheeting and bunded. Stockpiles should be properly covered by impermeable sheeting to reduce dust emission during dry season or contaminated run-off during rainy season. Watering should be avoided on stockpiles of soil to minimise runoff.

Landfill Gas Hazard

• “No Smoking” and “No Naked Flame” notices in Chinese and English should be posted prominently around the construction site.

Ecology

• Properly erect and maintain 2m high solid barriers for protection.

12.2.2 The tentative impact monitoring schedule for the next reporting period is shown in the Appendix 12.1. The regular impact monitoring will be conducted at the same monitoring locations in the next reporting period.

13 Conclusions

13.1 Conclusion

13.1.1 This is the 5^th Monthly EM&A Report summarizing the findings of EM&A works at Works Contract No. ND/2024/01 under the Project with EP-467/2013/A and EP-468/2013/A, Works Contract No. ND/2024/04 under the Project with EP-465/2013/A and EP-471/2013/A, Works Contract No. ND/2024/06 under Environmental Permit No. EP-470/2013/A and for Contract No. ND/2024/07 under Environmental Permit No. EP-476/2013 during the reporting period from 01 to 31 May 2025. No construction works occur in the remaining contracts during the reporting period for Contract No. ND/2024/02, ND/2024/03, ND/2024/05 and ND/2024/08.

13.1.2 No Action Level or Limit Level exceedance was recorded for air quality and construction noise monitoring in the reporting period.

13.1.3 All ambient arsenic monitoring was conducted as scheduled in the reporting period. No Action or Limit Level exceedance was recorded during ambient arsenic monitoring in the reporting period.

13.1.4 All ecological monitoring was conducted as scheduled in the reporting period. No Action or Limit Level exceedance was recorded during the ecological monitoring in the reporting period.

13.1.5 Environmental site inspections were conducted at Works Contract No. ND/2024/01 on 9, 13, 20 and 27 May 2025. For Works Contact No. ND/2024/04 were carried out on 13 and 23 May 2025. For Works Contact No. ND/2024/06 were carried out on 7, 14 and 19 May 2025. For Works Contract No. ND/2024/07 were carried out on 8, 15, 22 and 24 May 2025.

13.1.6 No environmental complaint was received in the reporting period.

13.1.7 No notification of summons and prosecution was received in the reporting period.

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

Executive Summary

Introduction

Key Construction Works in the Reporting Period

Environmental Monitoring and Audit Programme

Breaches of Action Levels (AL) and Limit Levels (LL)

Complaint Log

Notification of Summons and Successful Prosecutions

Reporting Changes

Future Key Issues

1 Introduction

1.1 Project Background

1.2 Project Organisation

1.2.1 Parties with different levels of involvement in the Project organisation for Works Contracts are summarized in Table 1.1.

1.2.2 The key personnel contact names and contact numbers are summarized in Appendix 1.2.

1.3 Construction Works Programme and Construction Works Area

1.4 Summary of Environmental Status

1.4.1 A summary of the relevant permits, licences, and/or notifications on environmental protection for the work contracts that are involved in this reporting period is presented in Table 1.2 to Table 1.5.

2 Air Quality Monitoring

2.1 Monitoring Requirement

2.1.1 In accordance with the EM&A Manual, the approved updated EM&A Manual for the First Phase, the ET shall carry out impact monitoring during the construction phase of the Project. 1-hour and 24-hour TSP to monitor the air quality for the Works Contacts.

2.1.2 Impact 1-hour TSP monitoring was conducted for at least three times every 6 days, while the impact 24-hour TSP monitoring was conducted for at least once every 6 days at the designated air quality monitoring stations.

2.2 Monitoring Location

2.2.1 According to the EM&A Manual, the approved updated EM&A Manual for the First Phase, the designated locations for impact air quality monitoring in related to the work contracts in the reporting period are listed in Table 2.1 and their locations are shown in Figure 2.1 and 2.2.

2.3 Monitoring Parameter and Frequency and Duration

2.3.1 In accordance with the requirements for placement of equipment, as set out of the EM&A Manual of the Project, the approved updated EM&A Manual for the First Phase, the monitoring parameter, frequency and duration of impact air quality monitoring are listed in Table 2.2.

2.4 Monitoring Equipment

2.4.2 Table 2.3 summarizes the equipment used in the air quality monitoring programme. Copies of the calibration certificates for air quality monitoring equipment are shown in Appendix 2.2.

2.5 Monitoring Methodology and QA/QC Procedure

2.5.1 Direct reading dust meter was deployed for the air quality monitoring as shown in Table 2.3.

2.5.2 The measuring procedures of the dust meters were in accordance with the Manufacturer’s Instruction Manual as follows:

2.5.3 The following maintenance/calibration was required for the HVS:

2.5.4 The following guidelines were adopted during the installation of HVS:

2.5.5 Wellab Limited (HOKLAS Registration No. HOKLAS083) is a HOKLAS accredited laboratory and responsible for the preparation of 24-hour conditioned and pre-weighed filter papers for the monitoring team.

2.5.6 All filters were equilibrated in the conditioning environment for 24 hours before weighing. The conditioning environment temperature was around 25°C and not variable by more than ±3°C; the relative humidity (RH) was < 50% and not variable by more than ±5%. A convenient working RH was 40%.

2.5.7 Operating/analytical procedures for the air quality monitoring were highlighted as follows:

2.5.8 The following maintenance/calibration was required for the HVS:

2.5.9 The measuring procedures of the dust meters were in accordance with the Manufacturer’s Instruction Manual as follows:

2.5.10 The following maintenance/calibration was required for the direct reading dust meter:

2.6 Action and Limit Level for Air Quality Monitoring

2.7 Results and Observations

2.7.1 Air quality monitoring was conducted as scheduled in the reporting period. The air quality monitoring schedule during the reporting period is shown in the Appendix 2.1.

2.7.2 The 1-hour and 24-hour TSP air quality monitoring result in the reporting period are summarized in Table 2.6 and 2.7. No Action or Limit levels exceedance was recorded in the reporting period. Details of the results and graphical presentation are shown in Appendix 2.2.

2.7.3 The weather information during the reporting period is presented in Appendix 2.3.

2.8 Event and Action Plan

3 Construction Noise Monitoring

3.1 Monitoring Requirements

3.2 Monitoring Locations

3.2.1 According to the approved Updated EM&A Manual, the monitoring designated locations for construction noise monitoring in related to the works contracts in the reporting period are listed in Table 3.1 and shown in Figure 3.1 and 3.2.

3.3 Noise Monitoring Parameter, Frequency and Duration

3.3.1 Construction noise level was measured by the ET and measured in terms of the A-weighted equivalent continuous sound pressure level (Leq). Leq(30mins) used as the monitoring parameter for the construction noise monitoring.

3.3.2 As supplementary information for data auditing, statistical results such as L10 and L90 were also obtained for reference.

3.3.3 Table 3.2 summarizes the monitoring parameters, duration, and frequency of construction noise monitoring.

3.4 Monitoring Equipment, Methodology and QA / QC Procedure

3.4.2 Noise measurements were not made in fog, rain, wind with a steady speed exceeding 5 m/s or wind with gusts exceeding 10 m/s. The wind speed was checked with a portable wind speed meter capable of measuring the wind speed in m/s.

3.4.3 Sufficient numbers of noise measuring equipment and associated instrumentation were prepared by the ET. All the equipment and associated instrumentation were clearly labelled.

3.4.4 The monitoring procedures are as follows:

3.4.5 Table 3.3 summarizes the noise monitoring equipment used during the reporting period. Copies of the calibration certificates for noise monitoring are shown in Appendix 3.1

3.5 Maintenance and Calibration

3.5.1 Maintenance and calibration procedures are as follows:

3.6 Action and Limit Levels

3.7 Results and Observations

3.7.1 All noise monitoring was conducted as scheduled in the reporting month. The noise monitoring schedule during the reporting period is shown in the Appendix 2.1.

3.7.3 No complaint on construction noise was received during the reporting month, therefore no Action/Limit Level exceedance was recorded.

3.8 Event and Action Plan

3.8.1 Should non-compliance of the noise monitoring criteria occur, actions in accordance with the Event and Action Plan in Appendix 3.4 shall be carried out.

4 Water Quality

4.1 Monitoring Requirement

4.2 Result and Observations

4.2.1 No construction of channelisation work between KTN-CS1, KTN-IS1, FLN-CS1 and FLN-IS1 were undertaken during the reporting period. Therefore, no water quality monitoring was carried out.

5 Waste Management

5.1.2 Sorting of construction and demolition (C&D) materials was carried out on site. Sufficient numbers of receptacles were provided for general refuse collection and sorting. Excavated inert C&D materials were reused to minimize the disposal of C&D waste to public fill.

5.1.3 The Contractor is advised to minimize the wastes generated through recycling or reusing. All applicable mitigation measures stipulated in the Updated EM&A Manual and waste management plans will be fully implemented.

6 Ecology

6.1 Introduction

6.2 Monitoring Requirements

Weekly Site Inspection

Monitoring of Measures to Minimise Disturbance to Water Birds in Ng Tung River, Sheung Yue River, Shek Sheung River and Long Valley

Monitoring of Measures to Minimise Impacts to Ma Tso Lung Stream and Siu Hang San Tsuen Stream, and Long Valley

6.2.3 As stipulated in Section 12.3.2.14 of the Updated EM&A Manual, aquatic fauna monitoring should be conducted monthly during the wet season (April – October) of the construction phase.

Monitoring of Measures to Minimise Impacts on Ecological Sensitive Habitats from Disturbance and Pollution

3.3.1 Construction noise level was measured by the ET and measured in terms of the A-weighted equivalent continuous sound pressure level (L_eq). L_eq(30mins) used as the monitoring parameter for the construction noise monitoring.

3.3.2 As supplementary information for data auditing, statistical results such as L₁₀ and L₉₀ were also obtained for reference.