Contents

Executive Summary. I

1     Introduction. 1

1.1      Project Background. 1

1.2      Project Organisation. 2

1.3      Construction Works Programme and Construction Works Area. 2

1.4      Summary of Environmental Status. 5

2     Air Quality Monitoring.. 10

2.1      Monitoring Requirement. 10

2.2      Monitoring Location. 10

2.3      Monitoring Parameter and Frequency and Duration. 11

2.4      Monitoring Equipment. 11

2.5      Monitoring Methodology and QA/QC Procedure. 12

2.6      Action and Limit Level for Air Quality Monitoring.. 15

2.7      Results and Observations. 16

2.8      Event and Action Plan. 17

3     Construction Noise Monitoring.. 18

3.1      Monitoring Requirements. 18

3.2      Monitoring Locations. 18

3.3      Noise Monitoring Parameter, Frequency and Duration. 19

3.4      Monitoring Equipment, Methodology and QA / QC Procedure. 20

3.5      Maintenance and Calibration. 21

3.6      Action and Limit Levels. 21

3.7      Results and Observations. 22

3.8      Event and Action Plan. 23

4     Water Quality. 24

4.1      Monitoring Requirement. 24

4.2      Result and Observations. 24

5     Waste Management. 25

6     Ecology. 27

6.1      Introduction. 27

6.2      Monitoring Requirements. 27

6.3      Results and Observations. 29

6.4      Event and Action Plan. 37

7     Landscape and Visual. 38

7.1      Audit Requirements. 38

7.2      Results and Observations. 38

7.3      Event and Action Plan. 38

8     Land Contamination (Ambient Arsenic Monitoring) 39

8.1      Monitoring Requirements. 39

8.2      Monitoring Locations. 39

8.3      Monitoring Equipment. 40

8.4      Monitoring Parameters, Frequency and Duration. 40

8.5      Monitoring Methodology and QA/QC Procedure. 41

8.6      Maintenance/Calibration. 42

8.7      Laboratory Measurement / Analysis. 42

8.8      Result and Observations. 43

8.9      Event and Action Plan. 43

9     Landfill Gas Monitoring.. 44

9.1      Monitoring Requirements. 44

9.2      Monitoring Parameters and Frequency. 44

9.3      Monitoring Locations. 44

9.4      Result and Observations. 45

10       Built Heritage Monitoring.. 46

10.1       Monitoring Requirements. 46

10.2       Monitoring Location. 46

10.3       Monitoring Parameters and Frequency. 47

10.4       Monitoring Equipment. 47

10.5       Result and Observations. 47

10.6       Event and Action Plan. 47

11       Environmental Site Inspection and Audit. 49

11.1       Implementation Status of Environmental Mitigation Measures. 49

12       Summary of Monitoring Exceedance, Complaints, Notification of Summons and Prosecutions. 55

12.1       Summary of Exceedance. 55

12.2       Summary of Environmental Non-Compliance. 55

12.3       Summary of Environmental Complaint. 55

12.4       Summary of Environmental Summon and Successful Prosecution. 56

13       Future Key Issues. 57

13.1       Works and Potential Environmental Issues in the next Reporting Period  57

13.2       Recommendation. 60

14       Conclusions. 63

14.1       Conclusion. 63

14.2       Comments/ Recommendations. 64

 

 

 

Figures

Figure 1.1        Location and Site Layout Plan (KTN)

Figure 1.2        Location and Site Layout Plan (FLN)

Figure 2.1        Location of Air Quality Monitoring Stations for KTN NDA

Figure 2.2        Location of Air Quality Monitoring Stations for FLN NDA

Figure 3.1        Location of Noise Monitoring Stations for KTN NDA

Figure 3.2        Location of Noise Monitoring Stations for FLN NDA

Figure 6.1        Transect Routes for Non-aquatic Fauna Monitoring of Measures to Minimise Impacts on Ecological Sensitive Habitats from Disturbance and Pollution (T1, T4 and T6), Aquatic Fauna Monitoring of Measures to Minimise Impacts to Ma Tso Lung Stream and Siu Hang San Tsuen Stream, and Long Valley (MS_01 - MS_10), and Waterbirds Monitoring of Measures to Minimise Disturbance to Waterbird (T3 and T5) for KTN NDA

Figure 6.2        Transect Routes for Non-aquatic Fauna Monitoring of Measures to Minimise Impacts on Ecological Sensitive Habitats from Disturbance and Pollution (T2 and T3), Aquatic Fauna Monitoring of Measures to Minimise Impacts to Ma Tso Lung Stream and Siu Hang San Tsuen Stream, and Long Valley (MS_11 - MS_15), and Waterbirds Monitoring of Measures to Minimise Disturbance to Waterbird (T1, T2 and T4) for FLN NDA

Figure 8.1        Location of Ambient Arsenic Monitoring Stations for KTN NDA

 

Appendices

Appendix 1.1    Construction Programme

Appendix 1.2    Project Organization Chart

Appendix 1.3    Implementation Status of Environmental Mitigation Measure

Appendix 2.1    Impact Monitoring Schedule during the reporting period

Appendix 2.2    Impact Air Quality Monitoring Data & Graphical Presentations & Calibration Certificates

Appendix 2.3    Weather Information during the Reporting Period

Appendix 2.4    Event and Action Plan for Construction Dust

Appendix 3.1    Impact Noise Monitoring Data & Graphical Presentations & Calibration Certificates

Appendix 3.2    Event and Action Plan for Construction Noise

Appendix 5.1    Summary of Monthly Waste Flow Table

Appendix 6.1    Detailed Results of the Ecological Waterbird Monitoring during this Reporting Period

Appendix 6.2    Detailed Results of the Ecological Non-aquatic Monitoring during this Reporting Period

Appendix 6.3    Event and Action Plan for Ecological Monitoring

Appendix 7.1    Event and Action Plan for Landscape and Visual

Appendix 8.1    Impact Ambient Arsenic Monitoring Data & Graphical Presentations &Calibration Certificates (sourced from the First Phase ET)

Appendix 8.2    Event and Action Plan for Ambient Arsenic Monitoring

Appendix 10.1  Location of Construction Vibration Monitoring

Appendix 10.2  Calibration Certificate for Vibration Monitoring Equipment

Appendix 10.3  Results for Vibration Monitoring

Appendix 12.1  Statistical Summary of Environmental Complaints, Summons and Prosecution

Appendix 13.1  Impact Monitoring Schedule of Next Reporting Month

Executive Summary

Introduction

A1.    This is the 12th 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/2024/03, 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/2024/03, 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/2024/05 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

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

Castle Peak Road Diversion

DP2

EP-467/2013/A

ND/2024/01
ND/2024/02
ND/2024/03
ND/2024/05

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

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, construction works under Works Contract No. ND/2024/04 commenced since 10 May 2025, construction works under Works Contract No. ND/2024/03 has also been commenced since 2 June 2025. No construction works occurred in the remaining Works Contracts (i.e. Works Contract No. ND/2024/02, 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 Yet Commenced

ND/2024/03

2 June 2025

ND/2024/04

10 May 2025

ND/2024/05

Not Yet Commenced

ND/2024/06

10 March 2025

ND/2024/07

27 February 2025

ND/2024/08

Not Yet 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 III (3), IV (4), V (5), VII (7) and XXXV (35)

1.   Site Clearance & Demolition

2.   Asbestos Abatement Works

3.   Environmental Ground Investigation

4.   Construction of Temporary Drainage Diversion

·  Portion VIII (8)

1.   Site Clearance

2.   Asbestos Abatement Works

·  Portion XL (40)

1.   Excavation, Mixing with General fill & Backfilling

2.   Construct Retaining Wall

·  Portion LI (51)

1.     Stockpiling

·  Portion LIX (59)

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

·  Portion XVII (17), XVII (18), XXI (21), XXXIV (34), XXXV (35), XLI (41), XLII (42)

1.   Site Formation at Link Bridge L1 L2 Area

2.   Sheet Piling

3.   Drainage Pipe Installation

 

Works Contract No. ND/2024/03:

·  Portion XVI

1.   Site Clearance and Tree Works

2.   Watermain and Sewer Pipe Laying

·  Kwu Tung Road Bridge

1.     Site Clearance and Tree Works

2.   Site formation and cutback the existing slope

3.   Predrilling

4.   Foundation & Piling

·  Works Areas – WA1, WA2, WA3, WA4 & WA5

1.   Site Clearance and Site Formation at PM’s Site Office

2.   Temporary Drainage

3.   Asbestos Removal

·  Portion XI – East Abutment

1.   Trial Pits for UUs

2.   Predrilling

3.   Temporary fill platform

4.   Solid Dull Green Site Barrier

·  Kwu Tung Interchange Foundation & Substructure – Bridge B1 & C1

1.   Ground Investigation

·  Road L3 Viaduct

1.    Temporary fill platform

2.    Predrilling

3.    Piling

 

Works Contract No. ND/2024/04:

1.   Site Clearance

2.   Site Establishment

3.   Tree Felling

4.   Trial Pit

5.   Pre-drilling

6.   Ground Investigation

7.   Haul Road Construction

8.   Existing Sewage Diversion

9.   Bored Piling

10.Sheet piling

11.Soil Nailing

 

Works Contract No. ND/2024/06:

·  Portion A

1.   Excavation to +95 mPD of Portion A

2.   Forming Haul Road beside Existing THFWSR for Excavation Works of Portion A

3.   Ground Investigation Works

·  Portion C

1.   Trench and Watermans Laying Works of Portion C

·  Portion D

1.   Trench and Watermans Laying Works of Portion D

2.   Demolition of DN2000 Pipes and Associated Thrust Block of Portion D

3.   Backfill of Chamber

·  Portion E & F

4.   Trench and watermans of Portion E & F

 

Works Contract No. ND/2024/07:

1.   Site Clearance

2.   Site Formation

3.   Ground Investigation

4.   Pier Construction

5.   Lift Tower Construction

6.   Bridge Deck Connection

7.   Steel Works

8.   Drainage Construction

9.   Improvement of Junction

10.Tree Felling

11. Asbestos Containing Materials Survey & Removal

12. Archaeological Survey

13. Land Contamination Investigation

14. Internal Movement / Importation & Exportation of C&D Materials

15. Structural Removal

16. Assembly Yard for Bridge Construction

17. Storage Yard for Concrete Pipe

18. Rebar Yard

19. Reinstatement Works

 

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

1.   No Construction Work during reporting period.

Environmental Monitoring and Audit Programme

A6.    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

EM&A
 Activities

Monitoring Station(s)

Works Contract(s)(5)

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)

4, 10, 16, 22, 27, 31 December 2025

N/A

4, 10, 16, 22, 27, 31 December 2025

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

1, 5,
11, 17, 23, 29 December 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

4,
10, 16, 22, 27, 31 December 2025

N/A

FLN-DMS6(A)(2)(3)

N/A

N/A

5, 11, 17, 23, 29 December 2025 (6)

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)

4, 10, 16, 22, 27, 31 December 2025

N/A

4, 10, 16, 22, 27, 31 December 2025

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

4, 10, 16, 22, 27, 31 December 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

4, 10, 16, 22, 27, 31 December 2025

N/A

FLN-DMS6(A)(2)(3)

N/A

N/A

5, 11, 17, 23, 29 December 2025 (6)

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)

1, 12, 18, 23 December 2025(6)

N/A

N/A

N/A

N/A

N/A

N/A

N/A

CP-KTN-NMS2(2)

4, 10, 16, 22, 31 December 2025

N/A

N/A

N/A

N/A

N/A

N/A

N/A

CP-KTN-NMS3(2)

4, 10, 16, 22, 31 December 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

4, 10, 16, 22, 31 December 2025

N/A

N/A

CP-KTN-NMS6(2)

4, 10, 16, 22, 31 December 2025

N/A

N/A

N/A

N/A

N/A

N/A

N/A

CP-KTN-NMS7(2)

1, 12, 18, 23 December 2025(6)

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

1, 11, 17, 23, 29 December 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

2, 8, 19, 22, 31 December 2025(6)

N/A

N/A

N/A

N/A

CP-FLN-NMS5(2)

N/A

N/A

N/A

N/A

N/A

N/A

2, 8, 19, 22, 31 December 2025(6)

N/A

CP-FLN-NMS6(2)

N/A

N/A

N/A

N/A

N/A

N/A

2, 8, 19, 22, 31 December 2025(6)

N/A

Ecological Monitoring (4)

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

Weekly Monitoring:3, 4, 8, 12, 16, 19, 22, 23, 29, 31 December 2025 (Transect T1, T2, T3, and T5)


Additional Nighttime Monitoring at Long Valley:
4, 16 December 2025 (Transect T5)

N/A

Weekly Monitoring: 3, 4, 8, 12, 16, 19, 22, 23, 29, 31 December 2025 (Transect T1, T2, T3, and T5)


Additional Nighttime Monitoring at Long Valley:
4, 16 December 2025 (Transect T5)

Weekly Monitoring: 1, 4, 9, 11, 15, 18, 22, 24, 29, 30 December 2025 (Transect T4)

N/A

Weekly Monitoring: 3, 4, 8, 12, 16, 19, 22, 23, 29, 31 December 2025 (Transect T1, T2, T3)

Weekly Monitoring: 1, 3, 4, 8, 9, 11, 12, 15, 16, 18, 19, 22, 23, 24, 29, 30, 31 December 2025 (Transect T1, T2, T3, T4)

N/A

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

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

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

Monthly Monitoring: 11 December 2025 (Transect T1)

N/A

Monthly Monitoring: 9 December 2025 (Transect T4)

N/A

N/A

Monthly Monitoring: 17 December 2025 (Transect T2)

Monthly Monitoring: 9 December 2025  (Transect T3)

N/A

24-hour  RSP (Ambient Arsenic) Monitoring for Land Contamination (1)

KTN-DMS-4A(2)(3)

4, 10, 16, 22, 27, 31 December 2025

N/A

4, 10, 16, 22, 27, 31 December 2025

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(7)

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

2, 9 ,15, 23, 30 December 2025

N/A

N/A

N/A

N/A

N/A

N/A

N/A

Site Area under Works Contract No. ND/2024/03

N/A

N/A

1, 8, 18, 22, 30 December 2025

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

5, 12, 18, 24 December 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

1, 8, 15, 22, 29 December 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

4, 11, 18, 24, 31 December 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-hour and 24-hour TSP / 24-hour 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 the reporting month 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. No ecological monitoring was conducted for the Monitoring of Measures to Minimise Impacts to Ma Tso Lung Stream and Siu Hang San Tsuen Stream for this reporting month as this monitoring is only conducted during wet season (April – October). Detailed divisions of work between First Phase ET and Remaining Phase can be referred to Section 6 and relevant appendix.

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

(6)       The monitoring date for the reporting month was conducted by the ET from the Remaining Phase of KTN/FLN NDAs Project.

(7)       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)

A7.    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

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

Leq(30mins)

1 (1)

0

1 (1)

0

0

0

0

0

0

Ecological Monitoring

Avifauna

0

0

0

0

0

0

0

0

0

Non-aquatic fauna

0

2

2

0

2

2

0

0

0

Remarks:

(1)    The complaint case under works contract ND/2024/04, received on 9 December 2025 and further referred the complaint to Engineer’s Representative and ET on 17 December 2025, is still under investigation by the Contractor and ET. The final investigation results, including the conclusion of whether the case is project-related or not, will be included in next month's report.

 

Air Quality

A8.    No AL or LL exceedance was recorded for air quality monitoring in the reporting period.

 

Noise

A9.    1 Action Level exceedance was recorded for construction noise monitoring in the reporting period due to noise complaints received. No Limit Level exceedance was recorded for construction noise monitoring in the reporting period.

 

Ambient Arsenic

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

 

 

Ecological Monitoring

A11.  2 Limit Level exceedances were recorded for the monitoring of measures to minimise impacts on ecological sensitive habitats from disturbance and pollution. All exceedances were deemed as non-project related with potential influences by abiotic factors. 

 

Built Heritage Monitoring (Vibration Monitoring)

A12.  No exceedance of limits was recorded for vibration monitoring in the reporting period.

Complaint Log

A13.  There were total of 2 complaints received during the reporting period. 1 environmental complaint related to construction noise caused by nighttime tree felling works on 9 December 2025 under works contract ND/2024/04. The complaint was received via 1823 on 9 December 2025 and assigned to Civil Engineering and Development Department (CEDD), CEDD further referred the complaint to Engineer’s Representative and ET on 17 December 2025. The complaint case is still under investigation by the Contractor and ET.  The final investigation results, including the conclusion of whether the case is project-related or not, will be included in next month's report. The details of the complaint and investigation finding are shown in Appendix 12.1.

A14.  Another environmental complaint related to construction vehicle causing dust impact at Ma Tso Lung Road and Ho Sheung Heung Road under works contract ND/2024/01 was received in the reporting period. The complaint was received by EPD on 31 December 2025 and referred to ET on 31 December 2025. The complaint case was investigated and investigation was closed out on 14 January 2026. The details of the complaint and investigation finding are shown in Appendix 12.1.

Notification of Summons and Successful Prosecutions

A15.  No notification of summons or successful prosecutions was received in the reporting period.

Reporting Changes

A16.  There was no change to be reported that may affect the on-going EM&A programme.

Future Key Issues

A17.  The major site activities for the next reporting period are summarized below and shown in Appendix 1.1:

 

Works Contract No. ND/2024/01:

·  All Site Resumption Area(s)

1.   Tree survey

2.   Site Clearance

·  Portion IV (4), V (5), VII (7) and XXXV (35)

1.   Site Clearance and Demolition

2.   Asbestos Abatement Works

3.   Construction of Temporary Drainage Diversion

·  Portion XI (11)

1.     Construct Metropolis Community Liaison and Visitor Centre

·  Portion XL (40)

1.   Excavation, Mixing with General fill & Backfilling

2.   Construct Retaining Wall & Backfilling

·  Portion LI (51)

1.   Stockpiling

·  Portion LIX (59)

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

·  Portion XVII (17), XVII (18), XXI (21), XXXIV (34), XXXV (35), XLI (41), XLII (42)

1.   Site Formation at Link Bridge L1 L2 Area

2.   Drainage Pipe Installation

3.   Sheet Piling, ELS & Excavation

 

Works Contract No. ND/2024/03:

·  Portion XVI

1.   Site Clearance and Tree Works

2.   Watermain and Sewer Pipe Laying

·  Portion IX

1.   Site Clearance and Preparation

·  Portion XI

1.   Site Clearance and Tree Works

2.   Ground Investigation

3.   Temporary Marine Platform

4.   Solid Dull Green Site Barrier

·  TTA stage 1 Works

1.   Footbridge No.4 – Ground Investigation

2.   Footbridge No.4 – UU Works

·  Works Areas – WA1, WA2, WA3, WA4 & WA5

1.   Site Clearance and Site Formation

2.   Hoarding Works

3.   Asbestos Removal Works

·  Kwu Tung Interchange Foundation & Substructure – Bridge A1, B1, C1, B3, C3, D1 & D2

1.   Piling Work

2.   Tree Works

·  Kwu Tung Interchange Foundation & Substructure – Bridge B2 & C2

1.   Site Formation

·  Kwu Tung Interchange Foundation & Substructure – Bridge B1 & C1

1.   Site Clearance & Tree Work

2.   Ground Investigation

·  Road L3 Viaduct

1.    Temporary fill platform

2.    Predrilling

3.    Piling

 

Works Contract No. ND/2024/04:

1.   Site Clearance

2.   Site Establishment

3.   Tree Felling

4.   Tree Transplant

5.   Trial Pit

6.   Predrilling

7.   Ground Investigation

8.   Demolition of Existing Structures

9.   Haul Road Construction

10.Bored Piling

11.Pier and Abutment

12.Sheet Piling

13.Soil Nailing

 

Works Contract No. ND/2024/06:

·  Portion A

1.   Forming Haul Road beside Existing THFWSR for Excavation Works of Portion A

2.   Excavation to +90mPD of Portion A

·  Portion C

1.     Trench and Watermans Laying Works of Portion C

·  Portion D

1.     Trench and Watermans Laying Works of Portion D

2.     Demolition of Thrust Blocks of Portion D

·  Portion E & F

1.     Trench and Watermans Laying Works of Portion E & F

·  Area D

1.   Tree Falling at Haul Road

 

Works Contract No. ND/2024/07:

1.   Site Clearance

2.   Site Formation

3.   Ground Investigation

4.   Pre-bored Socketed H Pile Construction

5.   Lift Tower Construction

6.   Drainage Construction

7.   Improvement of Junction

8.   Watermain Diversion

9.   Asbestos Containing Materials Survey & Removal

10.Open landscaping Works

11.Tree Felling & Transplantation

12.Archaeological Survey

13.Land Contamination Investigation

14.Internal Movement, Importation & Exportation of C&D materials

15. Storm Pipe Construction

16.Temporary Road Construction

17.Road Works

18.Structural Removal

19.Outfall Construction

20.UU diversion

21.ABWF Works

22.Assembly Yard for Bridge Construction

23. Storage Yard for Concrete Pipe

24. Rebar Yard

25. Reinstatement Works

 

Works Contract No. ND/2024/08:

1.   The construction work will be commenced in January 2026

 

 

 

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 12th 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/2024/03 under the Project with EP-465/2013/A, EP-466/2013/A and EP-467/2023/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 1 to 31 December 2025. No construction works occur in the remaining contracts during the reporting period for Contract No. ND/2024/02, 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

AECOM Asia Co. Ltd

-

Binnies Hong Kong Limited

AtkinsRéalis

-

Contractor

Build King  – Richwell Engineering Joint Venture (BKJV)

-

China State – STEC Joint Venture

CW – CRCC (ND202404) 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 VIII (8)

1.   Site Clearance

2.   Asbestos Abatement Works

·  Portion III (3), IV (4), V (5), VII (7) and XXXV (35)

1.     Site Clearance & Demolition

2.   Asbestos Abatement Works

3.   Environmental Ground Investigation

4.   Construction of Temporary Drainage Diversion

·  Portion XL (40)

1.   Excavation, Mixing with General fill & Backfilling

2.   Construct Retaining Wall

·  Portion LI (51)

1.   Stockpiling

·  Portion LIX (59)

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

·  Portion XVII (17), XVII (18), XXI (21), XXXIV (34), XXXV (35), XLI (41), XLII (42)

1.   Site Formation at Link Bridge L1 L2 Area

2.   Sheet Piling

3.   Drainage Pipe Installation

 

Works Contract No. ND/2024/03:

·  Portion XVI

1.   Site Clearance and Tree Works

2.   Watermain and Sewer Pipe Laying

·  Kwu Tung Road Bridge

1.     Site Clearance and Tree Works

2.   Site formation and cutback the existing slope

3.   Predrilling

4.   Foundation & Piling

·  Works Areas – WA1, WA2, WA3, WA4 & WA5

1.   Site Clearance and Site Formation at PM’s Site Office

2.   Temporary Drainage

3.   Asbestos Removal

·  Portion XI – East Abutment

1.   Trial Pits for UUs

2.   Predrilling

3.   Temporary fill platform

4.   Solid Dull Green Site Barrier

·  Kwu Tung Interchange Foundation & Substructure – Bridge B1 & C1

1.   Ground Investigation

·  Road L3 Viaduct

1.   Temporary fill platform

2.    Predrilling

3.    Piling

 

Works Contract No. ND/2024/04:

1.   Site Clearance

2.   Site Establishment

3.   Tree Felling

4.   Trial Pit

5.   Pre-drilling

6.   Ground Investigation

7.   Haul Road Construction

8.   Existing Sewage Diversion

9.   Bored Piling

10.Sheet piling

11.Soil Nailing

 

Works Contract No. ND/2024/06:

·  Portion A

1.   Excavation to +95 mPD of Portion A

2.   Forming Haul Road beside Existing THFWSR for Excavation Works of Portion A

3.   Ground Investigation Works

·  Portion C

1.     Trench and Watermans Laying Works of Portion C

·  Portion D

1.   Trench and Wartermans Laying Works of Portion D

2.   Demolition of DN2000 Pipes and Associated Thrust Block of Portion D

3.   Backfill of Chamber

·  Portion E & F

1.     Trench and Watermans Laying Works of Portion E & F

 

Works Contract No. ND/2024/07:

1.   Site Clearance

2.   Site Formation

3.   Ground Investigation

4.   Pier Construction

5.   Lift Tower Construction

6.   Bridge Deck Connection

7.   Steel Works

8.   Drainage Construction

9.   Improvement of Junction

10.Tree Felling

11. Asbestos Containing Materials Survey & Removal

12. Archaeological Survey

13. Land Contamination Investigation

14. Internal Movement / Importation & Exportation of C&D Materials

15. Structural Removal

16. Assembly Yard for Bridge Construction

17. Storage Yard for Concrete Pipe

18. Rebar Yard

19. Reinstatement Works

 

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

1.   No Construction Work during reporting period.

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 1.6.

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

Permit / License Name/No.

Valid Period

Status

From

To

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

WT00046627-2025

03/06/2025

30/06/2030

Valid

WT00046736-2025

10/06/2025

30/06/2030

Valid

WT00046982-2025

03/10/2025

31/10/2030

Valid

Construction Noise Permit (CNP)

 

 

 

GW-RN0966-25

22/08/2025

11/02/2026

Valid

GW-RN0757-25

09/07/2025

31/12/2025

Valid

GW-RN1540-25

26/12/2025

23/03/2026

Valid

 

Table 1.3 Status of Environmental License, Notifications and Permits for Works Contract No. ND/2024/03

Permit / License Name/No.

Valid Period

Status

From

To

Environmental Permit

EP-465/2013/A

20/01/2017

N/A

Valid

EP-466/2013/A

18/08/2022

N/A

Valid

EP-467/2013/A

27/01/2017

N/A

Valid

Notification pursuant to Air Pollution Control (Construction Dust) Regulation

10008101

15/08/2024

N/A

Valid

Billing Account for Disposal of Construction Waste

7052008

21/08/2024

N/A

Valid

Registration of Chemical Waste Producer

WPN:5213-548-C5047-01

22/01/2025

N/A

Valid

Effluent Discharge License under Water Pollution Control Ordinance

WT00046044-2025

07/11/2025

28/02/2030

Valid

Construction Noise Permit (CNP)

 

 

 

GW-RN0800-25

16/07/2025

03/01/2026

Superseded by GW-RN1262-25

GW-RN1036-25

14/09/2025

13/12/2025

Valid until 13/12/2025

GW-RN1262-25

06/11/2025

05/02/2026

Superseded by GW-RN1496-25

GW-RN1353-25

17/11/2025

16/02/2026

Valid

GW-RN1496-25

19/12/2025

18/03/2025

Valid

 

Table 1.4 Status of Environmental License, Notifications and Permits for Works Contract No. ND/2024/04

Permit / License Name/No.

Valid Period

Status

From

To

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-C5043-01

28/01/2025

N/A

Valid

Effluent Discharge License under Water Pollution Control Ordinance

WT00047165-2025

15/12/2025

31/08/2030

Valid

Construction Noise Permit (CNP)

 

 

 

GW-RN0948-25

20/08/2025

31/01/2026

Valid

GW-RN1044-25

17/09/2025

16/03/2026

Valid

GW-RN1135-25

01/10/2025

31/12/2025

Valid

GW-RN1377-25

24/11/2025

23/03/2026

Valid

GW-RN1376-25

24/11/2025

23/02/2026

Valid

GW-RN1405-25

28/11/2025

27/02/2026

Valid

GW-RN1457-25

10/12/2025

09/03/2026

Valid

GW-RN1523-25

25/12/2025

28/02/2026

Valid

GW-RN1379-25

01/12/2025

28/02/2025

Valid

 

Table 1.5 Status of Environmental License, Notifications and Permits for Works Contract No. ND/2024/06

Permit / License Name/No.

Valid Period

Status

From

To

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

WT00046560-2025

15/05/2025

31/05/2030

Valid

WT00046847-2025

11/07/2025

31/07/2030

Valid

WT00046588-2025

29/05/2025

31/05/2030

Valid

Construction Noise Permit (CNP)

 

 

 

GW-RN0972-25

02/09/2025

28/02/2026

Valid

GW-RN1039-25

25/09/2025

24/12/2025

Valid until 24/12/2025

GW-RN1439-25

29/12/2025

28/04/2026

Valid

 

Table 1.6 Status of Environmental License, Notifications and Permits for Works Contract No. ND/2024/07

Permit / License Name/No.

Valid Period

Status

From

To

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

WT00046059-2025

17/06/2025

28/02/2030

Valid

WT00046342-2025

15/05/2025

31/05/2030

Valid

WT00046692-2025

29/05/2025

31/05/2030

Valid

WT00046655-2025

03/06/2025

30/06/2030

Valid

WT00046819-2025

31/07/2025

31/07/2030

Valid

WT00047343-2025

29/09/2025

30/09/2030

Valid

WT00047250-2025

12/11/2025

30/11/2030

Valid

Construction Noise Permit (CNP)

 

 

 

GW-RN0975-25

23/08/2025

22/02/2026

Valid

GW-RN1089-25

19/09/2025

18/01/2026

Valid

GW-RN1224-25

01/11/2025

30/04/2026

Valid

GW-RN1350-25

18/11/2025

17/02/2026

Valid

GW-RN1111-25

01/12/2025

28/02/2026

Valid

GW-RN1299-25

01/12/2025

28/02/2026

Valid

GW-RN1473-25

12/12/2025

31/05/2026

Valid

GW-RN1480-25

19/12/2025

18/03/2026

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

3.2.1      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 Figure 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,

ND/2024/03

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,

ND/2024/03

KTN-326

Planned

Village Resite

KTN-DMS4(B)(1)(2)

ND/2024/01,

ND/2024/03

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/2024/03,

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

Remarks:

(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)

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

 

Remarks:

(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: LD-5R)

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 1.3m 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-hour TSP and 24-hour 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)

50

100

30

297

500

FLN-DMS1(1)

83

154

34

303

500

FLN-DMS5(1)

56

130

33

279

500

FLN-DMS6(A)(2)

48

71

22

286

500

Remarks:

(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)

51

61

43

192

260

FLN-DMS1(1)

46

67

23

150

260

FLN-DMS5(A) (1)

59

93

38

153

260

FLN-DMS6(A)(2)

48

56

42

157

260

Remarks:

(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 (December 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 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 (Leq) 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 Figure 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,

ND/2024/03

CP-NMS5

Primary School

Planned

CP-KTN-NMS5

ND/2024/06

CP-NMS7

N/A

Existing

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 (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.

 

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)

Leq(30mins), L10 and

L90  (as six consecutive Leq,5min readings)

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 (Leq(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 Leq, 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

NTi Audio(2)

XL2

3

A2A-13548-E0

A2A-13663-F0

A2A-17638-E0

XL3

2

A3A-01229-F0

A3A-01231-F0

BSWA(1)

BSWA 308

3

580006

580011

580013

Acoustic Calibrator

RION(2)

NC-75

3

34724244

34724245

35124529

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)

Remark:

(1)    If works are to be carried out during restricted hours, the conditions stipulated in the construction noise permit issued by the Noise Control Authority have to be followed.

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

 

 

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      1 Action Level exceedance was recorded due to complaints received. No 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, Leq(30min), dB(A)

Baseline Levels, dB(A)

Limit Levels, dB(A)

ND/2024/01

CP-KTN-NMS1(1)(3)

46.4 – 62.0

65.7

75

CP-KTN-NMS2(1)(2)

55.7 – 62.6

58.6

CP-KTN-NMS3(1)(2)

52.1 – 63.5

51.6

CP-KTN-NMS6(2)

56.2 – 67.7

55.1

CP-KTN-NMS7(1)(3)

62.4 – 65.5

64.6

ND/2024/04

CP-FLN-NMS4(A)(1)(3)(4)

67.3 – 72.4

72.4

ND/2024/06

CP-KTN-NMS5(1)(2)

49.1 – 71.6

57.2

ND/2024/06, ND/2024/07

CP-FLN-NMS1(2)

67.3 – 69.4

69.9

ND/2024/07

CP-FLN-NMS5(1)(3)

66.0 – 68.5

69.5

CP-FLN-NMS6(3)

51.4 – 54.5

55.0

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 (dog barking) from nearby village house

CP-KTN-NMS2

Residential Building at Ma Tso Lung

Road Traffic Noise, Excavator, Crane

CP-KTN-NMS3

Fung Kong Garden

Road Traffic Noise, Breaker with Excavator, Dump Truck, 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, Concrete Mixer Truck, 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

Excavator, Dump Truck, Road Traffic Noise, Train Noise

ND/2024/06, ND/2024/07

CP-FLN-NMS1

Belair Monte

Road Traffic Noise, Excavator, Dump Truck, Concrete Mixer Truck, Crane, Breaker

CP-FLN-NMS3

Secondary School

N/A(1)

ND/2024/07

CP-FLN-NMS5

Man Kok Village

Road Traffic Noise

CP-FLN-NMS6

Woodland Crest

No construction activity and other noise source was observed

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      There was 1 complaint received outside the 07:00 – 19:00 on normal weekdays. The  environmental complaint related to road construction causing noise during the night at Fanling Highway under works contract ND/2024/04 was received in the reporting period. The complaint was received via 1823 on 9 December 2025 and assigned to Civil Engineering and Development Department (CEDD) on 17 December 2025, CEDD further referred the complaint to Engineer’s Representative and ET on 17 December 2025. The complaint case is still under investigation by the Contractor and ET.  The final investigation results, including the conclusion of whether the case is project-related or not, will be included in next month's report. The details of the complaint and investigation finding are shown in Appendix 12.1.

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

December 2025

10.959

0.000

9.076

1.883

0.000

0.152

0.002

0.063

0.007

0.000

0.000

1.156

ND/2024/03

December 2025

895.00 (1)

0.000

0.000

0.000

895.00 (1)

0.000

30.030

0.037

1.230

0.000

0.000

1309.680

ND/2024/04

December 2025

0.888

0.000

0.000

0.000

0.888

0.032

0.000

0.000

0.000

0.000

31.310

0.065

ND/2024/06

December 2025

34.286

12.202

6.954

13.687

13.645

0.000

0.008

0.030

0.005

0.000

0.000

0.041

ND/2024/07

December 2025

7.139

0.000

0.000

0.000

0.016

6.776

0.000

0.000

1.875

2.440

0.000

343.13

Note:  (1) Quantity was presented in ‘000 kg.

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/2024/03, 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)

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*^

MS_11, MS_12, MS_13, MS_14, MS_15

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/2024/03, ND/2024/04, ND/2024/06, ND/2024/07 and ND/2024/08); ^ = 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, 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. Relevant transect routes are summarized in Table 6.2 and illustrated in Figure 6.1 and Figure 6.2. As the sensitive receivers are large waterbirds and are easily visible, the transect routes only needed to follow one riverbank.

 

Table 6.2 Summary of Active Works Contracts and Corresponding Transects

Monitoring
Transect(s)

Relevant Works Contract(s)

ND/2024/01

ND/2024/03

ND/2024/04

ND/2024/06

ND/2024/07

ND/2024/08

T1. Ng Tung River

✓

✓

 

✓

✓

✓

T2. Ng Tung River

✓

✓

 

✓

✓

✓

T3. Sheung Yue River

✓

✓

 

✓

✓

✓

T4. Shek Sheung River

 

 

✓

 

✓

✓

T5. Long Valley

✓

✓

 

 

 

 

Monitoring Frequency

6.3.4      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.

6.3.5      For this reporting month, waterbird monitoring was 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 6.3.

Table 6.3 Monitoring Programme for Waterbirds Monitoring, December 2025

Week

Date

Transect(1)

1

1 Dec 2025

T4

3 Dec 2025

T1, T2

4 Dec 2025

T3, T4, T5

2

8 Dec 2025

T1, T2

9 Dec 2025

T4

11 Dec 2025

T4

12 Dec 2025

T3, T5

3

15 Dec 2025

T4

16 Dec 2025

T3, T5

18 Dec 2025

T4

19 Dec 2025

T1, T2

4

22 Dec 2025

T1, T2, T4

23 Dec 2025

T3, T5

24 Dec 2025

T4

5

29 Dec 2025

T3, T4, T5

30 Dec 2025

T4

31 Dec 2025

T1, T2

Additional Nighttime
Monitoring in Long Valley

4 Dec 2025

T5

16 Dec 2025

Remarks:

(1)    Transects T1, T2, T3, and T5 are relevant to Works Contract ND/2024/01 and ND/2024/03; 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 and ND/2024/08.

Monitoring Results

6.3.6      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/2024/03, ND/2024/04, ND/2024/06, ND/2024/07 and ND/2024/08 as summarised in Table 6.1.

6.3.7      Transect T1 and T2 were conducted along the Ng Tung River. For Transect T1, a total of 4 species of large waterbirds, namely Great Cormorant (19 individuals), Grey Heron (5 individuals), Great Egret (22 individuals) and Little Egret (40 individuals), were recorded in the reporting month. For Transect T2, a total of 4 species of large waterbirds, namely Great Cormorant (3 individuals), Grey Heron (27 individuals), Great Egret (48 individuals) and Little Egret (81 individuals), were recorded in the reporting month.

6.3.8      Transect T3 was conducted along the Sheung Yue River. A total of 5 large waterbirds, namely Great Cormorant (3 individuals), Grey Heron (47 individuals), Great Egret (29 individuals), Intermediate Egret (1 individual) and Little Egret (34 individuals), were recorded for the reporting month.

6.3.9      Transect T4 was conducted along the Shek Sheung River. A total of 38 species were recorded in the reporting month with 4 species of large waterbirds, namely Great Cormorant (12 individuals), Grey Heron (12 individuals), Great Egret (3 individuals) and Little Egret (20 individuals).

6.3.10    Transect T5 was conducted in Long Valley Nature Park with the highest species diversity and abundance recorded. A total of 5 species of large waterbirds, namely Great Cormorant (6 individuals), Grey Heron (14 individuals), Great Egret (114 individuals), Intermediate Egret (6 individuals) and Little Egret (116 individuals), were also found to utilise the habitat.

6.3.11    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 184 individuals recorded in total. 19 individuals were noted along Transect T1, 42 individuals along Transect T2, 16 individuals along Transect T3, 15 individuals along Transect T4, and 92 individuals were noted along Transect T5.

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

6.3.13    Table 6.4 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 6.4 Summary Table of Waterbird Monitoring Results Relative to Corresponding Action and Limit Levels, December, Transects T1, T2, T3, T4 and T5

Monitoring Parameter

Result in Reporting Month
(December 2025)

Baseline Level in Corresponding Month
(December 2019)

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)

72

34

24

17

Mean abundance of Chinese Pond Heron using Ng Tung River, Sheung Yue River and  Shek Sheung River

15

11

7

5

T4

Mean abundance of large waterbirds using Shek Sheung River (3)

9

6

4

3

Mean abundance of Chinese Pond Heron using Shek Sheung River

3

4

3

2

T5 Long Valley

Mean Abundance of birds (all species) recorded in LVNP

1542

901

631

451

Mean abundance of the Chinese Pond Heron

18

15

11

8

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).

 

6.3.14    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

6.3.15    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 of the construction phase. Therefore, no aquatic fauna monitoring was carried out during the reporting month. Monitoring activities will be resumed in April 2026.

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

Monitoring Methodology

Terrestrial Mammal

6.3.16    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.

6.3.17    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).

6.3.18    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.

6.3.19    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)

6.3.20    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.

6.3.21    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

6.3.22    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

6.3.23    The monitoring parameters are as follows:

·         Species composition;

·         Abundance;

·         Distribution for fauna observed; and

·         Species of conservation importance would be specified.

Monitoring Location

6.3.24    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.

6.3.25    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/2024/03 is Transect T4 which covers the south side of the Fanling Highway and Castle Peak Toad in the vicinity of Pak Shek Au; 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

6.3.26    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, T3 and T4) and Remaining Phase ET (T2). Survey dates for each monitoring are shown in Table 6.5.

Table 6.5 Monitoring Programme for Non-aquatic Fauna Monitoring, December 2025

Responsible ET

Date

Transect(1)

First Phase ET

11 Dec 2025

T1

9 Dec 2025

T3

9 Dec 2025

T4

Remaining Phase ET

17 Dec 2025

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; Transect T4 is relevant to Works Contract ND/2024/03.

 

Monitoring Results

Terrestrial Mammals

6.3.27    1 species of native terrestrial mammal, namely Japanese Pipistrelle, was recorded along Transect T1, T3 and T4. The species is of conservation importance. 5 species of native terrestrial mammals of conservation importance, namely Intermediate Horseshoe Bat, Chinese Noctule, Least Pipistrelle, Chinese Pipistrelle and Lesser Yellow Bat, were recorded along Transect T2 for the reporting month. A complete species list is enclosed as Appendix 6.2.

Herpetofauna (Amphibians and Reptiles)

6.3.28    1 herpetofauna species was recorded along Transect T1 with 1 native species of reptile (Bowring’s Gecko). The species is considered as a common and widespread native. 1 herpetofauna species, namely Chinese Gecko, was recorded along Transect T2. It is considered as widespread and locally common. 1 reptile species was recorded along Transect T3, while 3 herpetofauna species were noted along Transect T4. All species recorded are considered as widespread natives, and no species of conservation importance were noted. A complete species list is enclosed as Appendix 6.

Butterfly and Odonates

6.3.29    A total of 25 butterfly species were recorded along Transect T1. All species recorded are regarded as widespread natives with no species of conservation importance noted. 3 odonate species were recorded along Transect T1. All species recorded are considered as common natives. A total of 6 butterfly species were recorded along Transect T2 for the reporting month. All species are considered as widespread  and common in Hong Kong. 1 species of odonate, namely Common Blue Skimmer, was recorded along Transect T2. The species is considered as a widespread, common native. A total of 13 butterfly species and 1 odonate species were recorded along Transect T3. All species recorded are considered as common and locally widespread. 10 butterfly species were recorded along Transect T4. All species were noted to be widespread and common natives with no species of conservation importance recorded. A complete species list is enclosed as Appendix 6.2.

Summary of Monitoring Results

6.3.30    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 6.2a to Appendix 6.2d. Findings of surveys conducted by the Remaining Phase ET during this reporting month are detailed in Appendix 6.2e to Appendix 6.2h.

6.3.31    Tables 6.6 summarizes the monitoring results of Transect T1, T2, T3 and T4 for this reporting month.

Table 6.6 Summary Table of Monitoring Results for Non-aquatic Fauna Relative to Action and Limit Levels, December, Transect T1, T2, T3 and T4

Monitoring Parameter

Result in
Reporting Month
(December 2025) (1)

Baseline Level in Corresponding Month (December 2019) (1)

Action Level(2)

Limit Level(3)

T1

Terrestrial Mammals

1

1

N/A

N/A

Herpetofauna

1

4

3

2

Odonates

3

4

3

2

Butterflies

25

5

4

3

T2

Terrestrial Mammals

5

0

N/A

N/A

Herpetofauna

1

0

N/A

N/A

Odonates

1

0

N/A

N/A

Butterflies

6

3

2

1

T3

Terrestrial Mammals

1

1

N/A

N/A

Herpetofauna

1

1

N/A

N/A

Odonates

1

4

3

2

Butterflies

13

1

N/A

N/A

T4

Terrestrial Mammals

1

1

N/A

N/A

Herpetofauna

3

1

N/A

N/A

Odonates

0

1

N/A

N/A

Butterflies

10

2

N/A

1

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.

6.3.32    2 Limit Level exceedances (Herpetofauna and Odonates) were recorded for Monitoring of Measures to Minimise Impacts on Ecological Sensitive Habitats from Disturbance and Pollution during the reporting month. All exceedances were considered non-project related, as there was no evidence to suggest the exceedances were associated with project activities. Additionally, with the support of environmental data indicating a notably drier weather condition recorded for the reporting month by the Hong Kong Observatory, such events might have sharply reduced the availability of waterbodies readiness and eventually influenced the survey findings. As a result, correlate with the low species diversity of herpetofauna and odonate species recorded for the reporting month.

Details of the Influencing Factors

6.3.33    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 Riverr.

6.3.34    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

6.3.35    All ecological monitoring surveys for the reporting month have been carried out as scheduled, with 2 exceedances in Limit Levels were reported for herpetofauna and odonate species during the non-aquatic fauna survey conducted by the First Phase ET. All exceedances were considered as non-project related.

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 would be carried out by a Registered Landscape Architect (RLA) if landscape construction works would be conducted. Inspection on 9 and 23 December 2025 for ND/2024/01, 8 and 22 December 2025 for ND/2024/03, 12 and 24 December 2025 for ND/2024/04, 1, 15 and 29 December 2025 for ND/2024/06, 11 and 24 December 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

1

HVS Sampler (RSP)

TISCH

TE-6070X

1

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.

8.4      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-hour 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 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 was 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 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

4/12/2025

KTN-DMS4A*

4.09

9.36

11.7

10/12/2025

4.55

16/12/2025

4.84

22/12/2025

4.16

27/12/2025

4.53

31/12/2025

3.55

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      Built Heritage Monitoring

10.1  Monitoring Requirements

10.1.1    In accordance with the updated EM&A Manual, baseline condition survey and baseline vibration impact assessment shall be conducted for identified built heritage prior to the commencement of construction works. Baseline condition survey and baseline vibration impact assessment shall be conducted by a qualified building surveyor or qualified structural engineer to define the vibration limit (a vibration limit at 7.5mm/s and 15mm/s could be adopted for graded historical buildings and historical buildings respectively) and to evaluate if construction vibration monitoring and structural strengthening measures are required during construction phase to ensure the construction performance meets the vibration standard stated in the EIA report.

10.1.2    According to the condition survey report from cultural heritage condition survey for ND/2024/01 under EP-468/2013A and for ND/2024/03 under EP-465/2013A and EP-466/2013A a vibration monitoring plan was proposed for the surveyed cultural heritage, the Alert/Alarm/Action (3As) levels was adopted as recommended by the Antiquities and Monuments Office (AMO). This section presents the results of built heritage monitoring performed by the Contractor according to the proposed monitoring plan in baseline condition survey report.

10.2  Monitoring Location

10.2.1    In the reporting month, construction vibration monitoring was conducted for built heritage features at G303 when pile driving operation was conducted within assessment area of the construction works. The location of the construction vibration monitoring stations was summarised in Table 10.1 and shown in Appendix 10.1.

Table 10.1 Location of Construction Vibration Monitoring

EP No.

Contact No.

Monitoring Station(s)

Nature of Cultural Heritage

Location(s)

EP-465/2013A and EP-466/2013A

ND/2024/03

G303

Grade 3 Heritage Building

Castle Peak Road – Kwu Tung

 

10.3  Monitoring Parameters and Frequency

10.3.1    Table 10.2 summarises the vibration monitoring plan for surveyed cultural heritage under the Works Contracts. Vibration monitoring was conducted for surveyed built heritage when pile driving operation was conducted within the assessment area of construction works.

Table 10.2 Vibration Monitoring Plan

EP No.

Contact No.

Monitoring Station(s)

Distance with Construction Works

Monitoring Plan

EP-465/2013A and EP-466/2013A

ND/2024/03

G303

Within 50m

Daily assessment is required

Within 75m

Bi-daily assessment is required

Within 100m

Weekly assessment is required

Remarks:

(1)    Baseline condition survey was conducted for built heritage features at G302, G303, G308, KT26, KT53, KT65 and HKT03 for ND/2024/01 under EP-468/2013/A, G102, G202, G203, G303 and HKT03 for ND/2024/03 under EP-465-2013A and EP-466/2013A. As G102, G202, G203, G302, G303, G308, HKT03, KT26, KT 53 and KT65 were not within the assessment area of the related construction work, no construction vibration monitoring was conducted for the built heritage in the reporting month.

10.3.2    The construction vibration monitoring is planned to be conducted throughout each event of the pile driving operation on daily / bi-daily / weekly basis. The effect of ground-borne vibration from piling works on the surveyed built heritage was assessed by the maximum peak particle velocity (ppv), which was obtained from the maximum value of measurement of all pile driving operation events.

10.4  Monitoring Equipment

10.4.1    Copies of calibration certificates of the monitoring equipment employed by the Contractor of the construction vibration monitoring are attached in Appendix 10.2.

10.5  Result and Observations

10.5.1    In the reporting month, construction vibration monitoring was carried out by the Contractor for the built heritage features at G303 on a daily basis when pile driving operation was conducted within 50m of the construction work. No Limit Level exceedance for construction vibration monitoring was recorded in the reporting month. The monitoring results are provided in Appendix 10.3.

10.6  Event and Action Plan

10.6.1    Table 10.3 summarises the vibration limits for construction vibration monitoring for surveyed cultural heritage under ND/2024/01 and ND/2024/03, based on the Alert/Alarm/Action (3As) levels as recommended by the Antiquities and Monuments Office (AMO).

 

Table 10.3 Levels of Alert, Alarm and Actions for Tilting, Vibration and Settlement

Monitoring Types

Alert

Alarm

Acton

Tilting

1:2000

1:1500

1:1000

Settlement

6 mm

8 mm

10 mm

Ground Settlement

15 mm

20 mm

25 mm

Vibration (PPV)

5 mm/s

6 mm/s

7.5 mm/s

10.6.2    If any exceedance of limits is found or damage to either structural or non-structural elements of the historic buildings is identified, the construction works should be stopped immediately and structural engineers’ advice should be sought for any remedial work.

 

 

 

11      Environmental Site Inspection and Audit

11.1  Implementation Status of Environmental Mitigation Measures

11.1.1    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 2, 9, 15, 23 and 30 December 2025. For Works Contact No. ND/2024/03 were carried out on 1, 8, 18, 22 and 30 December 2025. For Works Contact No. ND/2024/04 were carried out on 5, 12, 18 and 24 December 2025. For Works Contact No. ND/2024/06 were carried out on 1, 8, 15, 22 and 29 December 2025. For Works Contract No. ND/2024/07 were carried out on 4, 11, 18, 24 and 31 December 2025.

11.1.2    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/2024/03, ND/2024/04, ND/2024/06 and ND/2024/07 in the reporting period are summarized in Table 11.1.

Table 11.1 Site Observations at Works Contract No. ND/2024/01, ND/2024/03, 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

2 December 2025

Observation:

 

1.Impervious sheets should be provided and covered properly on the excavated material at Portion 59.

 

2.Sandbags should be provided for drainage near vehicle washing facilities at Portion 40.

 

3.Gully should be surrounded by sandbags or sediment trap to prevent muddy water from being discharged into the gully directly at Portion 7

1.Excavated material was covered by tarpaulin at Portion 59. (Rectified on 3 December 2025)

 

2.Sandbags were provided along the vehicle washing area at Potion 40. (Rectified on 2 December 2025)

 

3.Sandbags were provide to enclose gully at Portion 7. (Rectified on 3 December 2025)

Reminder:

 

Nil

Nil

9 December 2025

Observation:

 

Nil

 

 

Nil

Reminder:

 

Nil

Nil

13 December 2025

Observation:

 

Nil

 

Nil

Reminder:

 

Nil

Nil

23 December 2025

Observation:

 

Nil

 

 

Nil

Reminder:

 

1.Contractor was reminded to prevent runoff entering public drainage at Portion 7.

Nil

30 December 2025

Observation:

 

Nil

 

 

Nil

Reminder:

 

1.Contractor was reminded to prevent cleaning water from water truck entering public drainage at Portion 7

Nil

ND/2024/03

1 December 2025

Observation:

 

1. Sandbags should be provided to the works area near Sheung Yue River to prevent muddy water from being discharged into the river.

 

 

1. Sandbags were provided along the working areas.

Reminder:

 

Nil

Nil

8 December 2025

Observation:

 

Nil

 

 

Nil

Reminder:

 

Nil

Nil

18 December 2025

Observation:

 

1. The contractor was reminded that various types of waste should be disposed in a timely manner, especially for general refuse which is scattered the temporary waste collection container at Sheung Yue River

 

 

1. The wastes were removed regularly

Reminder:

 

1. The contractor was reminded to reinstate the integrity of sandbags so as to fully enclose the works area at Sheung Yue River

 

Nil

22 December 2025

Observation:

 

1. Contractor was reminded to clear stagnant water regularly at Area 9

 

 

1. Water pond was filled up at Area 9

Reminder:

 

Nil

Nil

30 December 2025

Observation:

 

Nil

 

 

Nil

Reminder:

 

Nil

Nil

ND/2024/04

5 December 2025

Observation:

 

1. Contractor was reminded to remove silt and grit in U-channel at Portion 2

 

1. The silt and grit in U-channel was removed (Rectified on 8 December 205)

Reminder:

 

Nil

Nil

12 December 2025

Observation:

 

1. Contractor was reminded to remove debris in U-channel at Portion 1.

 

1. Debris was removed at Portion 1. (Rectified on 15 December 2025)

Reminder:

 

Nil

Nil

18 December 2025

Observation:

 

Nil

Nil

Reminder:

 

Nil

Nil

24 December 2025

Observation:

 

Nil

Nil

Reminder:

 

Nil

Nil

ND/2024/06

1 December 2025

Observation:

 

Nil

 

 

Nil

Reminder:

 

1. Contractor was reminded to provide regular water spraying to exposed slope surface at Portion A

Nil

8 December 2025

Observation:

 

Nil

 

 

Nil

Reminder:

 

1.Contractor was reminded to provide additional sprinklers for dust suppression at Area C

Nil

15 December 2025

Observation:

 

1. Contractor was reminded to set up tree protection zone for retained trees at new storage area.

 

 

1. Retained trees and working area were separated by concrete blocks.

Reminder:

 

Nil

Nil

22 December 2025

Observation:

Nil



Nil

Reminder:

 

1.Contractor was reminded to provide clear signage for wheel washing bay at Area D.

Nil

29 December 2025

Observation:

 

1.Contractor was reminded to provided water spraying facilities for rock breaking operation at Portion A

1. Water spraying facilities for rock breaking operations was provided at Portion A

Reminder:

 

Nil

 

ND/2024/07

4 December 2025

Observation:

 

Nil

Nil

Reminder:

 

1. Contractor was reminded to keep access road clear of soil and silt

Nil

11 December 2025

Observation:

 

Nil

 

 

Nil

Reminder:

 

1. Environmental permit was not displayed on site

 

2. Valid Construction Noise Permit should be posted in the vicinity works area for the bridge installation

 

Nil

18 December 2025

Observation:

 

Nil

Nil

Reminder:

 

Nil

Nil

24 December 2025

Observation:

 

 

Nil

 

 

Nil

Reminder:

 

Nil

Nil

31 December 2025

Observation:

 

 

Nil

 

 

Nil

Reminder:

 

Nil

Nil

11.1.3    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. The photographic records of measures as stipulated in EPs to mitigate ecological impacts in the reporting month are presented in Table 11.2.

 

Table 11.2 Photographic Records and Implementation Status of Measures for Ecological Impacts

Works Contracts

EP No.

Photographic Record

Implementation Status

ND/2024/01

EP-467/2013/A (Condition 2.9)

To minimise adverse impacts on habitats of ecological importance in the vicinity of the Project, 2m high solid dull green site barrier fences shall be erected around all active works areas.

^

EP-468/2013/A

(Condition 2.11)

ND/2024/03

EP-465/2013/A

(Condition 2.9)

To minimise adverse impacts on habitats of ecological importance in the vicinity of the Project, 2m high solid dull green site barrier fences shall be erected around all active works areas.

^

EP-466/2013/A

(Condition 2.9)

EP-467/2013/A

(Condition 2.11)

Implementation status:

^ Mitigation measure was fully implemented

* Observation / reminder was made during site audit but improved / rectified by the contractor

# Observation / reminder was made during site audit but not yet improved / rectified by the contractor

X Non-compliance of mitigation measure

•  Non-compliance but rectified by the contractor

 

N/A Not Applicable at this stage as no such site activities were conducted in the reporting period

 

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

12.1  Summary of Exceedance

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

12.1.2    1 Action Level was recorded for construction noise monitoring in the reporting period due to noise complaint received. The complaint case under works contract ND/2024/04, received on 9 December 2025, is still under investigation by the Contractor and ET. The final investigation results, including the conclusion of whether the case is project-related or not, will be included in next month's report. No Limit Level exceedance was recorded for construction noise monitoring in the reporting period.

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

12.1.4    2 Limit Level exceedances were recorded for the monitoring of measures to minimise impacts on ecological sensitive habitats from disturbance and pollution. All exceedances were deemed as non-project related with potential influences by abiotic factors.  

12.1.5    No AL or LL exceedance was recorded for built heritage monitoring (vibration monitoring) in the reporting period.

12.2  Summary of Environmental Non-Compliance

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

12.3  Summary of Environmental Complaint

12.3.1    There were total of 2 complaints received during the reporting period. 1 environmental complaint related to construction noise caused by nighttime tree felling works on 9 December 2025 under works contract ND/2024/04. The complaint was received via 1823 on 9 December 2025 and assigned to Civil Engineering and Development Department (CEDD), CEDD further referred the complaint to Engineer’s Representative and ET on 17 December 2025. The complaint case is still under investigation by the Contractor and ET.  The final investigation results, including the conclusion of whether the case is project-related or not, will be included in next month's report. The details of the complaint and investigation finding are shown in Appendix 12.1.

12.3.2    Another environmental complaint related to construction vehicle causing dust impact at Ma Tso Lung Road and Ho Sheung Heung Road under works contract ND/2024/01 was received in the reporting period. The complaint was received by EPD on 31 December 2025 and referred to ET on 31 December 2025. The complaint case was investigated and investigation was closed out on 14 January 2026. The details of the complaint and investigation finding are shown in Appendix 12.1.

12.4  Summary of Environmental Summon and Successful Prosecution

12.4.1    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 12.1

 

13      Future Key Issues

13.1  Works and Potential Environmental Issues in the next Reporting Period

13.1.1    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:

Works Contract No. ND/2024/01:

·  All Site Resumption Area(s)

1.   Tree survey

2.   Site Clearance

·  Portion IV (4), V (5), VII (7) and XXXV (35)

1.   Site Clearance and Demolition

2.   Asbestos Abatement Works

3.   Construction of Temporary Drainage Diversion

·  Portion XI (11)

1.     Construct Metropolis Community Liaison and Visitor Centre

·  Portion XL (40)

1.   Excavation, Mixing with General fill & Backfilling

2.   Construct Retaining Wall & Backfilling

·  Portion LI (51)

1.     Stockpiling

·  Portion LIX (59)

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

·  Portion XVII (17), XVII (18), XXI (21), XXXIV (34), XXXV (35), XLI (41), XLII (42)

1.   Site Formation at Link Bridge L1 L2 Area

2.   Drainage Pipe Installation

3.   Sheet Piling, ELS & Excavation

 

Works Contract No. ND/2024/03:

·  Portion XVI

1.   Site Clearance and Tree Works

2.   Watermain and Sewer Pipe Laying

·  Portion IX

1.   Site Clearance and Preparation

·  Portion XI

1.   Site Clearance and Tree Works

2.   Ground Investigation

3.   Temporary Marine Platform

4.   Solid Dull Green Site Barrier

·  TTA stage 1 Works

1.   Footbridge No.4 – Ground Investigation

2.   Footbridge No.4 – UU Works

·  Works Areas – WA1, WA2, WA3, WA4 & WA5

1.   Site Clearance and Site Formation

2.   Hoarding Works

3.   Asbestos Removal Works

·  Kwu Tung Interchange Foundation & Substructure – Bridge A1, B1, C1, B3, C3, D1 & D2

1.     Tree Works

2.     Piling Work

·  Kwu Tung Interchange Foundation & Substructure – Bridge B2 & C2

1.     Site Formation

·  Kwu Tung Interchange Foundation & Substructure – Bridge B1 & C1

1.   Site Clearance & Tree Work

2.   Ground Investigation

·  Road L3 Viaduct

1.    Temporary fill platform

2.    Predrilling

3.    Piling

 

Works Contract No. ND/2024/04:

1.     Site Clearance

2.   Site Establishment

3.   Tree Felling

4.   Tree Transplant

5.   Trial Pit

6.   Predrilling

7.   Ground Investigation

8.   Demolition of Existing Structures

9.   Haul Road Construction

10.Bored Piling

11.Pier and Abutment

12.Sheet Piling

13.Soil Nailing

 

Works Contract No. ND/2024/06:

·  Portion A

1.   Forming Haul Road beside Existing THFWSR for Excavation Works of Portion A

2.   Excavation to +90mPD of Portion A

·  Portion C

1.   Trench and Watermans Laying Works of Portion C& D

·  Portion D

1.   Trench and Watermans Laying Works of Portion C& D

2.   Demolition of Thrust Blocks of Portion D

·  Portion E & F

1.     Trench and Watermans Laying Works of Portion E & F

·  Area D

1.     Tree Falling At Haul Road

 

Works Contract No. ND/2024/07:

1.      Site Clearance

2.      Site Formation

3.      Ground Investigation

4.      Pre-bored Socketed H Pile Construction

5.      Lift Tower Construction

6.      Drainage Construction

7.      Improvement of Junction

8.      Watermain Diversion

9.      Tree Felling & Transplantation

10.    Asbestos Containing Materials Survey & Removal

11.    Open landscaping Works

12.    Archaeological Survey

13.    Land Contamination Investigation

14.    Internal Movement, Importation & Exportation of C&D materials

15.    Storm Pipe Construction

16.    Temporary Road Construction

17.    Road Works

18.    Structural Removal

19.    Outfall Construction

20.    UU diversion

21.    ABWF Works

22.    Assembly Yard for Bridge Construction

23.    Storage Yard for Concrete Pipe

24.    Rebar Yard

25.    Reinstatement Works

 

Works Contract No. ND/2024/08:

1.   The construction work will be commenced in December 2025

13.1.2    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.

13.2  Recommendation

13.2.1    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.

•       An individual of orchid Eulophia cernua was found growing underneath the pipeline adjacent to the access road leading to the summit of the Table Hill Freshwater Service Reservoir for Contract No. ND/2024/06. The species of conservation importance should be fenced off for protection to minimise the potential impacts aroused from nearby construction activities as far as possible.

13.2.2    The tentative impact monitoring schedule for the next reporting period is shown in the Appendix 13.1. The regular impact monitoring will be conducted at the same monitoring locations in the next reporting period.  

 

14      Conclusions

14.1  Conclusion

14.1.1    This is the 12th 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/2024/03 under the Project with EP-465/2013/A, EP-466/2013/A and EP-467/2023/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 1 to 31 December 2025. No construction works occur in the remaining contracts during the reporting period for Contract No. ND/2024/02, ND/2024/05 and ND/2024/08.

14.1.2    1 Action Level was recorded for construction noise monitoring in the reporting period due to noise complaint received. The complaint case under works contract ND/2024/04, received on 9 December 2025 and referred the complaint to Engineer’s Representative and ET on 17 December 2025. The complaint is still under investigation by the Contractor and ET. The final investigation results, including the conclusion of whether the case is project-related or not, will be included in next month's report. No Limit Level exceedance was recorded for construction noise monitoring in the reporting period.

14.1.3    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.

14.1.4    All ecological monitoring was conducted as scheduled in the reporting period. 2 Limit Level exceedances were recorded for the monitoring of measures to minimise impacts on ecological sensitive habitats from disturbance and pollution. All exceedances were deemed as non-project related with potential influences by abiotic factors.

14.1.5    No exceedance of limits was recorded for built heritage monitoring (vibration monitoring)n the reporting period.

14.1.6    Environmental site inspections were conducted at Works Contract No. ND/2024/01 on 2, 9, 15, 23 and 30 December 2025. For Works Contact No. ND/2024/03 were carried out on 1, 8, 18, 22 and 30 December 2025. For Works Contact No. ND/2024/04 were carried out on 5, 12, 18 and 24 December 2025. For Works Contact No. ND/2024/06 were carried out on 1, 8, 15, 22 and 29 December 2025. For Works Contract No. ND/2024/07 were carried out on 4, 11, 18, 24 and 31 December 2025.

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

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

14.1.9    No change to the EM&A programme was made in this reporting period.

14.2  Comments/ Recommendations

14.2.1    The proposed mitigation measures were properly implemented and were considered effective and efficient in pollution control.