Contents
1.4 Summary of Construction Works
1.5 Summary of EM&A Requirements
1.6 Status of Statutory Environmental Compliance with the Environmental Permit
1.7 Status of Other Statutory Environmental Requirements
2.3 Monitoring Parameters, Frequency, Duration and Monitoring Dates
2.6 Monitoring Schedule for the Reporting Period
3.3 Monitoring Parameters, Frequency, Duration and Monitoring Dates
3.6 Monitoring Schedule for the Reporting Period
4.3 Monitoring Parameters, Frequency and Duration
4.6 Monitoring Schedule for the Reporting Period
5.3 Monitoring Frequency and Dates
5.6.1 Environment of Stream Courses
7.2 Site Inspections and Key Observations
7.3 Landscape and Visual Mitigation Measures
7.4 Land Contamination Assessment
7.5 Monitoring for Compensation Woodland
7.6 Monitoring for Preserved/Transplanted Plant Species of Conservation Importance
7.6.1 Preserved Plant Species of Conservation Importance
7.6.2 Transplanted Plant Species of Conservation Importance
8 Implementation Status of Environmental Mitigation Measures
9 Summary of Exceedances of the Environmental Quality Performance Limit
10 Summary of Complaints, Notification of Summons and Successful Prosecutions
11.1 Construction Programme for the Coming Reporting Period
11.2 Monitoring Schedule for the Coming Reporting Period
12 Conclusions and Recommendations
Tables
Table 1.1: Commencement Dates of Construction Works for the Active Works Contracts
Table 1.2: Contact Information of Key Personnel
Table 1.3: Major Activities in the Reporting Period
Table 1.4: Summary of Status for the Environmental Aspects under the Updated EM&A Manual
Table 2.1: Impact Air Quality Monitoring Stations
Table 2.2: Impact Air Quality Monitoring Parameters, Frequency, Duration and Monitoring Dates
Table 2.3: Action and Limit Levels for 1-hour TSP
Table 2.4: Impact Air Quality Monitoring Equipment
Table 2.5: Summary of 1-hour TSP Monitoring Results in the Reporting Period
Table 3.1: Impact Construction Noise Monitoring Stations
Table 3.2: Impact Construction Noise Monitoring Parameters, Frequency, Duration and Monitoring Dates
Table 3.3: Action and Limit Levels for Construction Noise
Table 3.4: Noise Monitoring Equipment
Table 3.5: Summary of Construction Noise Monitoring Results in the Reporting Period
Table 4.1: Impact Water Quality Monitoring Stations
Table 4.2: Water Quality Monitoring Parameters, Duration and Frequency
Table 4.3: Calculated Action and Limit Levels for Impact Water Quality Monitoring
Table 4.4: Water Quality Monitoring Equipment
Table 4.5: Details of Exceedances Recorded for Water Quality Monitoring 18
Table 5.1: Impact Ecological Monitoring Stations
Table 5.2: Impact Ecological Monitoring Schedule
Table 5.3: Ecologically related Water Quality Monitoring Parameters and Testing Methods
Table 5.4: Ecologically-related Water Quality Monitoring Equipment
Table 5.5: Action and Limit Levels for Impact Ecological Monitoring
Table 5.8: Environment of Stream Courses at each Monitoring Station
Table 5.9: Summary of Aquatic Invertebrate Species Recorded in the Reporting Period
Table 5.10: Summary of Fish Species Recorded in the Reporting Period
Table 6.1: Quantities of Different Waste Generated and Imported Fill Materials for TCW
Table 7.1: Key Observations Identified during Site Inspections in this Reporting Period
Table 7.2: Landscape and Visual – Construction Phase Audit Summary
Table 7.3: Examples of Landscape and Visual Mitigation Measures
Table 7.4: Monitoring Programme for Landscape and Visual
Table 7.5: Event and Action Plan for Landscape and Visual
Table 7.6: Photos of the Compensation Woodland Planting
Table 10.1: Summary of Environmental Complaints
Table 11.1: Major Activities for the next Reporting Period
Tung Chung New Town Extension (TCNTE) is one of the major initiatives under the Government's multi-pronged approach to increase land supply to meet Hong Kong's medium- to long-term needs for housing, economic and social developments. The Environmental Impact Assessment (EIA) Report for TCNTE (Register No. AEIAR-196/2016) was approved on 8 April 2016 and the Environmental Permit (EP) No. EP-519/2016, covering the construction and operation of TCNTE, was granted on 9 August 2016. The EIA Report and EP cover both Tung Chung East (TCE) and Tung Chung West (TCW, hereafter referred to as "the Project").
Civil Engineering and Development Department (CEDD) commissioned Mott MacDonald Hong Kong Limited (MMHK) to undertake the role of Environmental Team (ET) for carrying out the Environmental Monitoring & Audit (EM&A) works during the construction phase of the Project in accordance with the requirements specified in the EP, Updated EM&A Manual (the Manual), EIA Report of the Project – i.e., Tung Chung New Town Extension (TCNTE) development in Tung Chung West (TCW) and other relevant statutory requirements.
This EM&A Report summarises the monitoring results and audit findings of the EM&A programme undertaken for the TCW Project during the reporting period from 1 to 30 September 2024 in accordance with the Manual. A summary of the monitoring and audit activities conducted in the reporting period is listed as below.
Summary of Monitoring and Audit Activities in the Reporting Period
|
Parameter |
Number of Sessions |
|
Air Quality Monitoring |
5 sessions |
|
Noise Monitoring |
4 sessions |
|
Water Quality Monitoring |
11 sessions(1) |
|
Ecological Monitoring |
1 session |
|
Environmental Site Inspection |
Contract No. NL/2020/05 ("Contract 5"): 4 sessions Contract No. NL/2020/06 ("Contract 6"): 4 sessions |
Note:
|
(1) |
Water quality monitoring scheduled on 6 and 21 Sep 2024 were cancelled due to the hoisting of Tropical Cyclone Warning Signal No. 8 and Red Rainstorm Warning Signal. |
Environmental auditing works, including weekly site inspections of construction works conducted by the ET, audit of implementation of Plan on Provision of Buffer Zones, Detailed Preservation and/or Translocation Plan for Plant Species of Conservation Importance and Waste Management Plan were conducted in the reporting period. Based on the audit results and the observation for the reporting period, environmental pollution control and mitigation measures for the Project were properly implemented.
Breaches of Action and Limit Levels for Air Quality
No exceedance of Action and Limit Levels was recorded for impact air quality monitoring in the reporting period.
Breaches of Action and Limit Levels for Noise
No exceedance of Limit Levels was recorded for construction noise monitoring in the reporting period. One (1) Action Level exceedance was triggered from the receipt of one (1) environmental complaint related to noise nuisance in the reporting period. Investigation was conducted for the exceedance in accordance with the Event and Action Plan.
Breaches of Action and Limit Levels for Water Quality
Suspended Solids (SS) exceedance was recorded during the reporting period. Relevant investigation and follow-up actions were conducted in accordance with the Event and Action Plan.
Ecological Monitoring
No exceedance of Action and Limit Levels was recorded for impact ecological monitoring in the reporting period.
Environmental Complaints, Non-compliance & Summons
There was no notification of summons or prosecution recorded in the reporting period.
One (1) environmental complaint related to both Contract 5 and Contract 6 was received in the reporting period. Investigation was conducted for the environmental complaint in accordance with the complaint handling process as stated in the Complaint Management Plan.
Reporting Change
There was no reporting change in the reporting period.
Summary of Upcoming Construction Activities
Contract No. NL/2020/05 ("Contract 5") - Ma Wan Chung
· Sloping Work, Road Work, Excavation for Retaining Wall, Temporary Excavation and Lateral Support (ELS) Work (Tie-Back Drilling and Installation, Sheet-piling and Excavation), Drainage Work (Excavation, Pipe Installation and Concreting) and Rising Main Installation, Sheet-pile Installation, Retaining Wall Construction and Temporary Pipe-pile Wall Construction at Part E;
· Sheet-pile Installation for Drainage Work, Excavation and Installation for Drainage Work, Covered Walkway Construction, Drainage Pipe Jacking Excavation Work at Part F;
· Excavation and Reinforce Concrete Work for Pier Caps, Column and Abutment, Tree Removal, Temporary Platform Erection, Flexible Barrier Construction and No-fine Concrete Pits Construction at Part G;
· Sheet-pile Installation, Temporary Pipe-pile Wall Construction, Excavation for Retaining Wall Construction, Construction of Barrier-Free-Access, Retaining Wall, Plant Room and Service Building Construction, Hiking Trail Construction, Drainage Work Construction, Soil Nail Construction and Excavation for Barrier-Free-Access, Backfilling and Landscape Work and Construction of Pavilion at Part H;
Contract No. NL/2020/06 ("Contract 6") - Tung Chung Valley
· Excavation, Site Clearance, Clutch Piling, Reinforce Concrete Work for Bridge A and Soldier Pile Wall Construction (Piling Work and Excavation for Capping Beam and Skin Wall) at Road L29;
· Drainage and Road Work, Utility Work, Water Piping Work and Construction Work for Bridge B at Road L30;
· Site Clearance, Excavation, ELS Work, Water Main, Rising Main and Drainage Pipe Installation, Hard Paving, Backfilling and Compaction at Yu Tung Road;
· Site Clearance, Excavation, ELS Work, Water Piping Work, Sewerage Work, Drainage Work, Sloping Work, Retaining Wall Construction and Backfilling for Cycle Track and Footpath at Chung Mun Road;
· Excavation, Site Clearance, Construction for Abutment of Bridge C, Retaining Wall Construction, Backfilling and Drainage Work at Shek Mun Kap Road;
· Reinforce Concrete Work, Demolition of Temporary Bridge B and Backfilling Work at Visitor Centre;
· Reinforce Concrete Work and Water Proofing Work at Sewage Pumping Station-A;
· ELS Work at Sewage Pumping Station-B;
· Drainage Work and Backfilling at Stormwater Attenuation and Treatment Pond (SATP) A01;
· Excavation, Retaining Wall Construction and Site Clearance at SATP A02;
· Site Clearance and Excavation at SATP A07.
1 Introduction
1.1
Background
Tung Chung New Town Extension (TCNTE) is one of the major initiatives under the Government’s multi-pronged approach to increase land supply to meet Hong Kong’s medium- to long-term needs for housing, economic and social developments. The Environmental Impact Assessment (EIA) Report for TCNTE (Register No. AEIAR-196/2016) was approved on 8 April 2016 and the Environmental Permit (EP) No. EP-519/2016, covering the construction and operation of TCNTE, was granted on 9 August 2016. The EIA Report and EP cover both Tung Chung East (TCE) and Tung Chung West (TCW, hereafter referred to as "the Project").
Civil Engineering and Development Department (CEDD) commissioned Mott MacDonald Hong Kong Limited (MMHK) to undertake the role of Environmental Team (ET) for carrying out the Environmental Monitoring & Audit (EM&A) works during the construction phase of the Project in accordance with the requirements specified in the EP, Updated EM&A Manual (the Manual), EIA Report of the TCW Project and other relevant statutory requirements. The scope of the Project works in TCW includes the following elements:
· Site formation works;
· Construction or the River Park including a visitor centre;
· Construction of proposed open space;
· Construction of sustainable urban drainage system;
· Construction of roads, footpath and the associated junction / road improvement works;
· Construction of coastal pedestrian access;
· Engineering infrastructure works covering drainage, sewerage, waterworks and landscaping works; and
· Implementation of environmental mitigation measures and environmental monitoring and audit works.
The construction works for the Project were commenced on 3 November 2021 and are divided into various works contracts. The following active works contracts were commenced on the dates shown in Table 1.1.
Table 1.1: Commencement Dates of Construction Works for the Active Works Contracts
|
Contract No. |
Contract Name |
Commencement Date of Construction Works |
|
Contract No. NL/2020/05 ("Contract 5") |
Tung Chung New Town Extension – Site Formation and Infrastructure Works at Ma Wan Chung |
3 Nov 2021 |
|
Contract No. NL/2020/06 ("Contract 6") |
Tung Chung New Town Extension – Site Formation and Infrastructure Works at Tung Chung Valley, Phase 1 |
3 Nov 2021 (Note: Construction works at Tung Chung Valley commenced on 30 Nov 2021) |
The locations of Contracts 5 and 6 are shown in Figures 1.1 and 1.2 respectively.
1.2
Scope of this Report
This is the Monthly EM&A Report for the TCW Project which summarises the key findings of the EM&A programme for the construction works during the reporting period from 1 to 30 September 2024.
1.3
Organisation
Structure
The organisation structure of the Project is shown in Appendix A. The key personnel contact names and contact details of the active works contracts are summarised in Table 1.2 below.
Table 1.2: Contact Information of Key Personnel
|
Party |
Position |
Name |
Telephone |
|
Contract No. NL/2020/05 ("Contract 5") Tung Chung New Town Extension – Site Formation and Infrastructure Works at Ma Wan Chung |
|||
|
Project Proponent (Civil Engineering and Development Department (CEDD)) |
Chief Engineer |
Sharon Wu |
2231 4439 |
|
Senior Engineer |
Ryan Chak |
2231 4468 |
|
|
Engineer |
Carol Lam |
2231 4472 |
|
|
Engineer’s Representative (ER) (Ove Arup and Partners Hong Kong Limited) |
Principal Resident Engineer |
Jackson Wong |
5699 5710 |
|
Senior Resident Engineer |
Sam Chan |
9671 5538 |
|
|
Senior Inspector of Works |
Tony Chiu |
5699 5792 |
|
|
Contractor (Build King – Richwell Civil Joint Venture) |
Project Manager |
Eric Yip |
9196 6098 |
|
Construction Manager |
Artie Wong |
9633 0977 |
|
|
|
Site Agent |
Ricky Hon |
9100 7509 |
|
|
Environmental Officer |
Calvin Chan |
6117 2894 |
|
|
24-hour Complaint Hotline |
- |
9326 1161 |
|
Contract No. NL/2020/06 ("Contract 6") Tung Chung New Town Extension – Site Formation and Infrastructure Works at Tung Chung Valley, Phase 1 |
|||
|
Project Proponent (Civil Engineering and Development Department (CEDD)) |
Chief Engineer |
Sharon Wu |
2231 4439 |
|
Senior Engineer |
Liz Li |
2231 4469 |
|
|
Engineer |
Samuel Yiu |
2231 4510 |
|
|
Engineer’s Representative (ER) (Ove Arup and Partners Hong Kong Limited) |
Principal Resident Engineer |
Jackson Wong |
5699 5710 |
|
Senior Resident Engineer |
Shirley Yeung |
9671 5518 |
|
|
Senior Inspector of Works |
Jensen Lo |
5699 5746 |
|
|
Contractor (China Railway Group Limited) |
Project Director |
Andy Yeung |
6266 0716 |
|
Project Manager |
Jeffrey Woo |
5538 0950 |
|
|
Site Agent |
Aaron Choi |
5345 3438 |
|
|
Construction Manager |
Chris Lai |
9060 4362 |
|
|
Superintendent |
Hua Xinrong |
6582 3049 |
|
|
|
Environmental Officer |
Simon Mak |
6266 0745 |
|
|
24-hour Complaint Hotline |
- |
9326 1161 |
|
Environmental Team (ET) (Mott MacDonald Hong Kong Limited) |
ET Leader |
Daniel Sum |
2585 8495 |
|
Deputy ET Leader |
Heidi Yu |
2828 5704 |
|
|
Independent Environmental Checker (IEC) (Binnies Hong Kong Limited) |
IEC |
Manuel Chua |
3894 9807 |
|
Deputy IEC |
Edward Lau |
3894 9695 |
|
1.4
Summary of
Construction Works
The programme of the construction is shown in Appendix B.
As informed by the Contractors of the active works contracts, details of the major works carried out in this reporting period are listed in Table 1.3.
The environmental mitigation implementation schedule is presented in Appendix C.
Table 1.3: Major Activities in the Reporting Period
|
Activities |
Key Issues |
Key Mitigation Measures |
|
Contract No. NL/2020/05 ("Contract 5")(1) Tung Chung New Town Extension – Site Formation and Infrastructure Works at Ma Wan Chung |
||
|
● Rock Dowel Drilling, Sloping Work, Excavation for Retaining Wall, Temporary ELS Work (Tie-Back Drilling and Installation, Sheet-piling and Excavation), Drainage Work (Excavation, Pipe Installation and Concreting) and Rising Main Installation, Retaining Wall Construction, Temporary Pipe-pile Wall Construction, Sheet-pile Installation, Drainage Pipe Installation for Pipe Jacking Work, Drainage Reinforce Concrete Construction and Backfilling Work at Part E; ● Sheet-pile Installation, Excavation, Drain Pipe Installation and Backfilling for Drainage Work, Covered Walkway Construction, Drainage Pipe Jacking Work and Pipe Installation at Part F; ● Excavation, Reinforce Concrete Work for Pier Caps, Column and Abutment, Reinforce Concrete Work for Bridge Deck, Flexible Barrier Construction and No-fine Concrete Pit Excavation at Part G; ● Sheet-pile Installation, Excavation for Retaining Wall, Excavation and Soil Nail Work for Barrier-Free-Access, Retaining Wall, Plant Room and Service Building Construction, Hiking Trail Construction, Backfilling Work and Pavilion Structural Steelwork Installation at Part H. |
● Dust Emission ● Handling and storage of C&D materials generated from construction activities ● Noise from plant operation ● Emission of dark smoke from PMEs ● Efficiency of wastewater and drainage management ● Tree Protection |
● Good site practices ● Regular water spraying on stockpiles ● Provide tarpaulin sheets coverage on stockpiles ● Sorting and reuse of C&D materials as far as practicable ● Use of QPME and noise barrier/acoustic mat ● Regular maintenance of PMEs ● Implementation of wastewater and drainage management ● Retain and protect all existing trees and vegetation within the study area which are not directly affected by the works |
|
Contract No. NL/2020/06 ("Contract 6")(2) Tung Chung New Town Extension – Site Formation and Infrastructure Works at Tung Chung Valley, Phase 1 |
||
|
● Excavation, Site Clearance, Clutch Piling, Open Cutting for Bridge A, ELS Work, Soldier Pile Wall Construction (Piling Work, Excavation for Capping Beam and Skin Wall) and Piling Work at Road L29; ● Road and Drainage Work, Utility Work, Water Piping Work and Construction Work for Bridge B at Road L30; ● Site Clearance, Excavation, ELS Work, Sheet-piling, Water Main, Rising Main and Drainage Pipe Installation, Pipe Jacking Work, Hard Paving, Backfilling and Compaction at Yu Tung Road; ● Excavation, ELS Work, Water Piping Work, Sloping Work, Sewerage Work, Drainage Work, Retaining Wall Construction, Backfilling of Cycle Track and Footpath at Chung Mun Road; ● Excavation, Backfilling, Site Clearance, Construction for Pile Cap of Bridge C, Retaining Wall Construction and Drainage Work at Shek Mun Kap Road; ● Excavation, Reinforce Concrete Work, Demolition of Temporary Bridge B and Soldier Piling at Visitor Centre; ● Reinforce Concrete Work and Water Proofing Work at Sewage Pumping Station-A; ● ELS Work at Sewage Pumping Station-B; ● Drainage Work and Backfilling at SATP A01; ● Excavation, Site Clearance and Retaining Wall Construction at SATP A02; ● Site Clearance and Excavation at SATP A07. |
● Dust Emission ● Handling and storage of C&D materials generated from construction activities ● Noise from plant operation ● Emission of dark smoke from PMEs ● Efficiency of wastewater and drainage management ● Tree Protection |
● Good site practices ● Regular water spraying on stockpiles ● Provide tarpaulin sheets coverage on stockpiles ● Sorting and reuse of C&D materials as far as practicable ● Use of QPME and noise barrier/acoustic mat ● Regular maintenance of PMEs ● Implementation of wastewater and drainage management ● Retain and protect all existing trees and vegetation within the study area which are not directly affected by the works |
Note:
|
(1) |
The construction work in Area Part D was completed and the management and maintenance responsibility for the works was taken over by the Housing Department in Feb 2024. |
|
(2) |
The construction work in Area 42 and Area 46 were completed and the management and maintenance responsibility for the works were taken over by the Housing Department in May 2023 and April 2024 respectively. |
1.5
Summary of EM&A Requirements
The status of all environmental aspects is presented in Table 1.4. The EM&A requirements remained unchanged during the reporting period.
Table 1.4: Summary of Status for the Environmental Aspects under the Updated EM&A Manual
|
Parameter |
Status |
|
Air Quality |
|
|
Baseline Monitoring |
The results of baseline air quality monitoring for TCW were reported in the Baseline Monitoring Report and submitted to EPD under EP Condition 3.4. |
|
Impact Monitoring |
On-going for TCW. Monitoring conducted three times in every 6 days. |
|
Noise |
|
|
Baseline Monitoring (Construction Noise) |
The results of baseline noise monitoring for TCW were reported in the Baseline Monitoring Report and submitted to EPD under EP Condition 3.4. |
|
Impact Monitoring (Construction Noise) |
On-going for TCW. Monitoring conducted once per week. |
|
Impact Monitoring for Road Traffic Noise during Operational Phase |
To be conducted during operational phase. |
|
Fixed Noise Commissioning Test |
To be implemented by the Contractor before operation of Tung Chung New Town Extension (TCNTE) development. |
|
Water Quality |
|
|
Baseline Monitoring |
The results of baseline water quality monitoring for TCW were reported in the Baseline Monitoring Report and submitted to EPD under EP Condition 3.4. |
|
Impact Monitoring |
On-going for TCW. Monitoring conducted three times per week. |
|
Waste Management |
|
|
Waste Monitoring |
On-going. |
|
Land Contamination |
|
|
Contamination Assessment Plan (CAP), Remediation Action Plan (RAP) and Remediation Report (RR) |
Re-appraisal of the remaining areas of the Possible Development Areas (PDAs) (including Area 46) and works areas for the associated infrastructures for both Contract 5 and Contract 6 in accordance with Section 8.3.4 and 8.4.2 of the approved EIA report (AEIAR-196/2016) and Section 10.3 of the Updated EM&A Manual were implemented and the associated reports were approved by EPD. Remediation works in Area 42 was completed in accordance with the Contamination Assessment Report and Remediation Action Plan as approved by EPD. Revised Remediation Report for Area 42 was submitted to EPD on 9 August 2023 and approved by EPD on 28 August 2023. Site investigation at the potentially contaminated sites/surveyed sites in Chung Mun Road, Road L29 and Shek Mun Kap Road was completed in accordance with the Supplementary Contamination Assessment Plan as approved by EPD. Contamination Assessment Report was approved by EPD on 11 January 2023. Site investigation for Site TC-1 located in Area Part F was completed in accordance with the Supplementary Contamination Assessment Plan as approved by EPD. Contamination Assessment Report for Site TC-1 was approved by EPD on 16 May 2023. Site investigation for Site TC-4 located in Chung Mun Road was carried out in July 2023 in accordance with the Supplementary Contamination Assessment Plan as approved by EPD. Revised Supplementary Contamination Assessment Report for Site TC-4 was approved by EPD on 5 October 2023. |
|
Ecology |
|
|
Monitoring for Compensation Woodland |
Compensation Woodland Planting was completed in May 2022. With the approval from EPD on the monitoring proposal in October 2022, the monitoring for Compensation Woodland was commenced in November 2022. Quarterly post-planting monitoring report for August 2024 was submitted to EPD on 27 September 2024. Quarterly post-planting monitoring for the compensation woodland was ongoing. |
|
Monitoring for Emergent Plant inside the future River Park |
To be conducted when the emergent plants are planted. |
|
Monitoring for Translocated Amphibians of Conservation Importance |
Pre-construction survey was conducted during 20-22 October 2021. Capture and translocation exercise was conducted during 29-31 October 2021. Report of Capture and Translocation Exercise was submitted by Contractor and no target amphibian species were captured or translocated during the exercise. |
|
Monitoring for Preserved/Transplanted Plant Species of Conservation Importance |
Pre-construction Survey Report and the Preservation/Translocation Proposal were submitted to EPD. Preservation of Plant Species of Conservation Importance has been commenced and monitoring has been carried out in the reporting period. Translocation of the two (2) individuals of Aquilaria sinensis to temporary holding nursery in Tai Po as stipulated in the revised Proposal for Plant Species of Conservation Importance for Contract 6 was completed on 29 September 2023. |
|
Baseline Monitoring for Tung Chung Stream Ecologically Important Stream (EIS) and Wong Lung Hang EIS |
The results of baseline ecological monitoring at the Eastern and Western Tributary of Tung Chung Stream for TCW were reported in the Baseline Monitoring Report and submitted to EPD under EP Condition 3.4. Monitoring for Wong Lung Hang was not required and the proposal by the ET Leader of TCE was accepted by EPD on 2 September 2021. |
|
Impact Monitoring for Tung Chung Stream |
On-going for the Eastern Tributary of Tung Chung Stream for TCW. Monitoring conducted at monthly intervals.
|
|
Landscape and Visual |
|
|
Baseline Monitoring |
The results of baseline landscape and visual monitoring were reported in the Baseline Monitoring Report and submitted to EPD under EP Condition 3.4. |
|
Cultural Heritage |
|
|
Archaeological Work at the development clusters in TCW, which included the implementation of Rescue Excavation and Survey-Cum-Excavation prior to any construction works; and Watching Brief during construction phase |
On-going. |
|
Site Environmental Audit |
|
|
Regular Site Inspection |
On-going. |
|
Plan on Provision of Buffer Zones implementation measures |
Under implementation by the Contractor of Contract 6. |
|
Plan for Review of Use of New Low Noise Road Surfacing Material implementation measures |
Not applicable during this reporting period. |
|
River Park Plan implementation measures |
Not applicable during this reporting period. |
|
Preservation and/or Translocation Plan for Plant Species of Conservation Importance implementation measures |
Under implementation by the Contractors of Contracts 5 and 6. |
|
Detailed Compensatory Woodland Planting Plan implementation measures |
Under implementation by the Contractor of Contract 6. |
|
Habitat Enhancement and Translocation Plan for Amphibian Species of Conservation Importance implementation measures |
Under implementation by the Contractor of Contract 6. |
|
Waste Management Plan implementation measures |
Under implementation by the Contractors of Contracts 5 and 6. |
|
Complaint Hotline and Email Channel |
Under implementation by the Contractors of Contracts 5 and 6. |
|
Environmental Log Book |
On-going. |
Taking into account the construction works, impact monitoring of air quality, noise, water quality, ecology and waste management were carried out in the reporting period. The monitoring schedule of air quality, noise, water quality and ecological monitoring are provided in Appendix F, Appendix G, Appendix H and Appendix I respectively.
The EM&A programme also involved environmental site inspections and related auditing conducted by the ET for checking the implementation of the required environmental mitigation measures recommended in the approved EIA Report and relevant EP submissions, including Detailed Preservation and/or Translocation Plan for Plant Species of Conservation Importance, Plan on Provision of Buffer Zones and Waste Management Plan.
1.6
Status of
Statutory Environmental Compliance with the Environmental Permit
The status of statutory environmental compliance with the EP conditions under the EIAO, submission status under the EP and implementation status of mitigation measures are presented in Appendix D.
1.7
Status of Other Statutory Environmental Requirements
The environmental licences and permits (including Environmental Permit, waste disposal billing account, registration as chemical waste producer and construction noise permit) which were valid in the reporting period are presented in Appendix E. No non-compliance with environmental statutory requirements was recorded.
1.8
Reporting of EM&A Results
The EM&A programme for the Project required environmental monitoring for air quality, noise and water quality as well as environmental site inspections for air quality, noise, water quality, waste management, ecology, and landscape and visual impacts. The EM&A requirements and related findings for each component are summarised in the following sections:
● Section 2 - Air Quality;
● Section 3 - Noise;
● Section 4 - Water Quality;
● Section 5 - Ecology;
● Section 6 - Waste Management Status;
● Section 7 - EM&A Site Inspection;
● Section 8 - Implementation Status of Environmental Mitigation Measures;
● Section 9 - Summary of Exceedances of the Environmental Quality Performance Limit;
● Section 10 - Summary of Complaints, Notification of Summons and Successful Prosecutions;
● Section 11 - Future Key Issues; and
● Section 12 - Conclusions and Recommendations.
2
Air Quality
2.1
Monitoring Requirements
According to the requirements in the Updated EM&A Manual, regular impact air quality monitoring shall be carried out at the designated monitoring locations during the construction period of the Project to obtain 1-hour Total Suspended Particulate (TSP) concentrations. One-hour sampling should be done at least 3 times per 6 days while the highest dust impact is expected. Further details of the impact air quality monitoring are presented in the following sections.
2.2
Monitoring Locations
A total of two air quality monitoring stations were identified for impact monitoring in the TCNTE possible development area (PDA) at Tung Chung West and are covered by this Report.
Locations of the impact air quality monitoring stations covered in this Report are summarised in Table 2.1 and shown in Appendix F1.
Table 2.1: Impact Air Quality Monitoring Stations
|
Monitoring Station |
Location |
|
DM-5 |
Lung Tseung Tau |
|
DM-6 |
Mok Ka |
2.3
Monitoring Parameters, Frequency, Duration and Monitoring Dates
Table 2.2 summarises the parameters, frequency, duration and monitoring dates for impact air quality monitoring during the reporting period.
Table 2.2: Impact Air Quality Monitoring Parameters, Frequency, Duration and Monitoring Dates
|
Monitoring Station |
Parameter |
Frequency and Duration |
Monitoring Dates |
|
DM-5 |
1-hour Total Suspended Particulates (TSP) |
3 times per 6 days during the construction period of the Project |
4, 10, 16, 20 & 26 Sep 2024 |
|
DM-6 |
2.4
Action and Limit Levels
The Action and Limit Levels of the air quality monitoring are provided in Table 2.3 below.
Table 2.3: Action and Limit Levels for 1-hour TSP
|
Monitoring Station |
Action Level (μg/m3) |
Limit Level (μg/m3) |
|
DM-5 |
266 |
500 |
|
DM-6 |
260 |
500 |
2.5
Monitoring Equipment
Portable direct reading dust meter was used to carry out the 1-hour TSP impact monitoring for the Project. The proposed use of portable direct reading dust meters was submitted to IEC and agreed by IEC in accordance with Section 5.5 of the Updated EM&A Manual. With the use of direct reading dust meter, it can allow prompt and direct results for the EM&A reporting and the implementation of the Event and Action Plan. The portable direct reading dust meter would be calibrated every year against High Volume Sampler (HVS) to check the validity and accuracy of the results measured by direct reading method.
Table 2.4 summarizes the equipment used in the impact air quality monitoring during the reporting period. Copies of the calibration certificates for the portable dust meters are presented in Appendix F2 and show that the portable direct reading dust meter is capable of providing comparable results with that provided by HVS.
Table 2.4: Impact Air Quality Monitoring Equipment
|
Monitoring Station |
Equipment |
Model |
|
DM-5 |
Portable direct reading dust meter
|
SIBATA LD-3B (Serial No. 436553 and 436560) |
|
DM-6 |
2.6
Monitoring Schedule for the Reporting Period
The schedule for impact air quality monitoring during the reporting period is provided in Appendix F3.
2.7
Results and Observations
The monitoring results for 1-hour TSP are summarised in Table 2.5. The monitoring data and the graphical presentation are provided in Appendix F4.
Table 2.5: Summary of 1-hour TSP Monitoring Results in the Reporting Period
|
Monitoring Station |
Average (μg/m3) |
Range (μg/m3) |
Action Level (μg/m3) |
Limit Level (μg/m3) |
|
DM-5 |
56 |
50 – 65 |
266 |
500 |
|
DM-6 |
41 |
37 – 45 |
260 |
500 |
The dust sources in the reporting period included road traffic and nearby construction sites.
No exceedance of Action and Limit Levels was recorded for construction air quality monitoring in the reporting period. No action was thus required to be undertaken in accordance with the Event and Action Plan presented in Appendix F5.
3
Noise
3.1
Monitoring Requirements
According to the requirements in the Updated EM&A Manual, regular impact construction noise monitoring shall be carried out at the designated monitoring locations once per week during the construction period of the Project. Construction noise level shall be measured in terms of the A-weighted equivalent continuous sound pressure level (Leq). Leq (30min) shall be used as the monitoring parameter for the time period between 0700 and 1900 hours on normal weekdays. For all other time periods, Leq (5min) shall be employed for comparison with the Noise Control Ordinance (NCO) criteria. As supplementary information for data auditing, statistical results such as L10 and L90 shall also be obtained for reference.
Further details of the impact construction noise monitoring are presented in the following sections.
3.2
Monitoring Locations
A total of five construction noise monitoring stations were identified for impact monitoring in the TCNTE possible development area (PDA) at Tung Chung West and are covered by this Report.
Locations of the impact construction noise monitoring stations covered in this Report are summarised in Table 3.1 and shown in Appendix G1.
Table 3.1: Impact Construction Noise Monitoring Stations
|
Monitoring Station |
Location |
Type of Measurement |
|
NMS-CA-5 |
Village house in Ma Wan Chung (G/F) |
Free field^ |
|
NMS-CA-6 |
Village house in Shek Mun Kap (G/F) |
Free field^ |
|
NMS-CA-7 |
YMCA of Hong Kong Christian College (Roof Floor) |
Façade |
|
NMS-CA-8 |
Caritas Wu Cheng-Chung College (Roof Floor)(1) |
Façade |
|
NMS-CA-9* |
Hong Chi Shiu Pong Morninghope School (Roof Floor) |
Façade |
Remark: * NMS-CA-9, which was described as "possible school development near Tung Chung Area 39" in the Updated EM&A Manual, was subsequently confirmed as "Hong Chi Shiu Pong Morninghope School" prior to commencement of baseline monitoring.
^ For Free Field measurement, +3dB(A) should be added to the measured results.
(1) NMS-CA-8 was renamed as "Caritas Wu Cheng-Chung College" since 1 Sep 2024.
3.3
Monitoring Parameters, Frequency, Duration and Monitoring Dates
Table 3.2 summarises the parameters, frequency, duration and monitoring dates for impact construction noise quality monitoring during the reporting period.
Table 3.2: Impact Construction Noise Monitoring Parameters, Frequency, Duration and Monitoring Dates
|
Monitoring Station |
Parameter |
Frequency and Duration |
Monitoring Dates |
|
NMS-CA-5 |
30-min measurement between 0700 & 1900 hrs on normal weekdays (Monday to Saturday) Leq, L10 and L90 would be recorded |
Once every week for 30 mins during the construction period of the Project |
5, 10, 20 & 26 Sep 2024 |
|
NMS-CA-6 |
|||
|
NMS-CA-7 |
|||
|
NMS-CA-8 |
|||
|
NMS-CA-9 |
3.4
Action and Limit Levels
The Action and Limit Levels for construction noise of the Project are provided in Table 3.3 below.
Table 3.3: Action and Limit Levels for Construction Noise
|
Monitoring Station |
Time Period |
Action Level |
Limit Level (dB(A), Leq(30min)) |
|
NMS-CA-5 NMS-CA-6 |
0700-1900 hrs on normal weekdays# |
When one documented complaint is received |
75 |
|
NMS-CA-7* NMS-CA-8* NMS-CA-9* |
70 (65 during school examination periods) |
Note: # 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.
* Denotes school / educational institution.
3.5
Monitoring Equipment
Integrating Sound Level Meters were used to conduct impact construction noise monitoring. They were the Type 1 sound level meter capable of giving a continuous readout of the noise level readings including equivalent continuous sound pressure level (LAeq) and percentile sound pressure level (Lx). They complied with International Electrotechnical Commission Publications 651:1979 (Type 1) and 804:1985 (Type 1). Table 3.4 summarizes the equipment used in the impact construction noise monitoring. Copies of the calibration certificates for the sound level meters and acoustical calibrators are attached in Appendix G2.
Table 3.4: Noise Monitoring Equipment
|
Monitoring Station |
Equipment & Model |
|
|
|
Integrating Sound Level Meter |
Acoustical Calibrator |
|
NMS-CA-5 |
Rion NL-52 (serial no. 00331805) |
Larson Davis CAL200 (serial no. 16172) |
|
NMS-CA-6 |
||
|
NMS-CA-7 |
||
|
NMS-CA-8 |
||
|
NMS-CA-9 |
||
3.6
Monitoring Schedule for the Reporting Period
The schedule for impact construction noise monitoring during the reporting period is provided in Appendix G3.
3.7
Results and Observations
The monitoring results for construction noise are summarised in Table 3.5. The monitoring data and the graphical presentation are provided in Appendix G4.
Table 3.5: Summary of Construction Noise Monitoring Results in the Reporting Period
|
Monitoring Station |
Average (dB(A), Leq(30min)) |
Range (dB(A), Leq(30min)) |
Limit Level (dB(A), Leq(30min)) |
|
NMS-CA-5 |
59^ |
58 – 60^ |
75 |
|
NMS-CA-6 |
61^ |
58 – 62^ |
|
|
NMS-CA-7 |
65 |
64 – 66 |
70 (65# during school examination periods) |
|
NMS-CA-8 |
66 |
65 – 66 |
|
|
NMS-CA-9 |
63 |
61 – 64 |
Note: ^ +3dB(A) Façade correction included for Free Field measurement.
# No school examination was taken place at NMS-CA7, NMS-CA-8 and NMS-CA-9 during this reporting period.
The noise sources during the construction noise monitoring in the reporting period included bird sound, nearby traffic, school activities and aircraft as well as nearby construction sites.
No Limit Level exceedance was recorded for construction noise monitoring in the reporting period. One (1) Action Level exceedance was triggered from the receipt of one (1) environmental complaint related to noise nuisance in the reporting period. Investigation was conducted for the complaint in accordance with the Event and Action Plan (Appendix G5) and the details were provided in Section 10.
4
Water Quality
4.1
Monitoring
Requirements
According to the requirements in the Updated EM&A Manual, regular impact water quality monitoring shall be carried out 3 days per week at the designated monitoring locations during the construction period of the Project. The interval between two sets of monitoring shall not be less than 36 hours. Further details of the impact water quality monitoring are presented in the following sections.
4.2
Monitoring Locations
The locations of the monitoring stations under the Project are shown in Table 4.1 and Appendix H1.
Table 4.1: Impact Water Quality Monitoring Stations
|
Monitoring Station |
Description |
Location |
|
|
|
Easting |
Northing |
|
|
TCW-WQM1 |
Downstream of Tung Chung Stream |
810784 |
815710 |
|
Tung Chung Stream (West) |
|||
|
TCW-WQM2 |
Middle of Tung Chung Stream (West) |
810701 |
815015 |
|
TCW-WQM4 |
Upstream of Tung Chung Stream (West) |
810641 |
814405 |
|
TCW-WQM6(1) |
Downstream of Tung Chung Stream (West) |
810814 |
815385 |
|
Tung Chung Stream (East) |
|||
|
TCW-WQM3A(2) |
Middle of Tung Chung Stream (East) [aka Upstream of River Park] |
811083 |
814895 |
|
TCW-WQM5A(3) |
Upstream of Tung Chung Stream (East) |
811194 811138 |
814368 814498 |
|
TCW-WQM7(1) |
Downstream of Tung Chung Stream (East) [aka Downstream of River Park] |
810862 |
815400 |
Notes:
(1) TCW-WQM6 and TCW-WQM7 are additional monitoring stations which can monitor the water quality impact associated with construction activities along the Tung Chung Stream (West) and Tung Chung Stream (East) respectively.
(2) TCW-WQM3A is the proposed relocated TCW-WQM3, which will be upstream of the River Park where there are no direct works on Tung Chung Stream (East). The original TCW-WQM3 location lies within the construction works area for the future River Park, which will be directly modified and inaccessible during construction phase.
(3) The monitoring location of TCW-WQM5A will be bounded by the coordinates shown, with the exact location depending on the nearest safe accessible and practical location to the original TCW-WQM5.
4.3
Monitoring Parameters, Frequency and Duration
Table 4.2 summarises the parameters, frequency and duration for impact water quality monitoring during the reporting period.
Table 4.2: Water Quality Monitoring Parameters, Duration and Frequency
|
Monitoring Station |
Parameters (Units) |
Frequency, Duration and Replication |
Monitoring Dates |
|
TCW-WQM1, TCW-WQM2, TCW-WQM3A, TCW-WQM4, TCW-WQM5A, TCW-WQM6, TCW-WQM7 |
● Dissolved Oxygen (DO) (mg/L and % saturation) ● Temperature (°C) ● Turbidity (NTU) ● Salinity (ppt) ● pH ● Suspended Solids (SS) (mg/L) ● Conductivity(1) (µS/cm) |
Impact monitoring: 3 days per week during the construction period of the Project. Not less than 36 hours’ interval between two sets of monitoring. Two (2) replicate in-situ measurements and water samples. |
2, 4, 9, 11, 13, 16, 19, 23, 25, 27 & 30 Sep 2024(2) |
Remark:
1. Water depth measurement is not applicable due to very shallow depth of the monitoring locations.
Note:
|
(1) |
Conductivity is an additional reference monitoring parameter adopted during a review of the baseline monitoring programme in June 2021. It is not compulsory as prescribed in the Updated EM&A Manual. |
|
(2) |
Water quality monitoring scheduled on 6 and 21 Sep 2024 were cancelled due to the hoisting of Tropical Cyclone Warning Signal No. 8 and Red Rainstorm Warning Signal respectively. |
In addition to the parameters presented in Table 4.2, other relevant data were also recorded, including monitoring location, time, approximate water depth (by visual observation), tidal condition (if applicable), weather conditions and any special phenomena or work underway at the Project site.
4.4
Action and Limit Levels
The calculated Action and Limit Levels of the impact water quality monitoring for the monitoring stations of Tung Chung Stream (West), Tung Chung Stream (East) and TCW-WQM1 are shown in Table 4.3 below.
Table 4.3: Calculated Action and Limit Levels for Impact Water Quality Monitoring
|
Parameters |
Action Level |
Limit Level |
|
Tung Chung Stream (West) |
||
|
DO in mg/L |
3.4 mg/L |
3.3 mg/L |
|
SS in mg/L |
7.0 mg/L or 120% of upstream control station at the same tide of the same day, whichever is higher |
16.9 mg/L or 130% of upstream control station at the same tide of the same day, whichever is higher |
|
Turbidity in NTU |
6.7 NTU or 120% of upstream control station at the same tide of the same day, whichever is higher |
22.0 NTU or 130% of upstream control station at the same tide of the same day, whichever is higher |
|
Tung Chung Stream (East) |
||
|
DO in mg/L |
4.2 mg/L |
4.0 mg/L |
|
SS in mg/L |
7.2 mg/L or 120% of upstream control station at the same tide of the same day, whichever is higher |
9.7 mg/L or 130% of upstream control station at the same tide of the same day, whichever is higher |
|
Turbidity in NTU |
9.8 NTU or 120% of upstream control station at the same tide of the same day, whichever is higher |
22.5 NTU or 130% of upstream control station at the same tide of the same day, whichever is higher |
|
TCW-WQM1 |
||
|
DO in mg/L |
2.2 mg/L |
1.8 mg/L |
|
SS in mg/L |
7.3 mg/L |
9.7 mg/L |
|
Turbidity in NTU |
24.7 NTU |
35.3 NTU |
Notes:
(1) For DO, non-compliance occurs when monitoring results is lower than the limits.
(2) For SS and Turbidity, non-compliance occurs when monitoring results is larger than the limits.
(3) Action and Limit Levels do not apply to TCW-WQM4 and TCW-WQM5A which are upstream control stations.
4.5
Monitoring Equipment
Table 4.4 summarizes the equipment used in the impact water quality monitoring works. All the monitoring equipment complied with the requirements set out in the Updated EM&A Manual. Copies of the calibration certificates are attached in Appendix H2.
Table 4.4: Water Quality Monitoring Equipment
|
Equipment |
Brand and Model |
|
Multifunctional Meter (in-situ measurement of DO, pH, temperature, salinity, turbidity and conductivity) |
Horiba U-53 (serial no. KP23RRSM) |
4.6
Monitoring Schedule for the Reporting Period
The schedule for impact water quality monitoring during the reporting period is provided in Appendix H3.
4.7
Results and Observations
A total of 11 monitoring events for impact water quality monitoring were conducted at all designated monitoring stations during the reporting period. Impact water quality monitoring results and graphical presentations were provided in Appendix H4.
An Action Level exceedance was recorded for water quality impact monitoring in the reporting period and the Event and Action Plan (Appendix H5) was undertaken. Investigation on the action and limit level exceedances were conducted and summarised in Table 4.5 below.
Table 4.5: Details of Exceedances Recorded for Water Quality Monitoring
|
Date |
Parameter |
Station |
Type |
Justification |
|
19 Sep 2024 |
Suspended Solids |
TCW-WQM7 |
Action |
(a) (b) (c) (d) (e) (f) (g) |
|
Remarks: |
(a) |
Installation of silt curtain at the diverted channel to minimise the silt content flowing downstream. |
|
|
(b) |
Construction runoff was diverted to the wastewater treatment facility for treatment before final discharge. |
|
|
(c) |
Sump pits were constructed at site for temporary containment of surface runoff. |
|
|
(d) |
Deployment of additional of sedimentation tank for the existing wastewater treatment facility to enhance the overall treatment capacity of the wastewater treatment facility. |
|
|
(e) |
No deficiencies in the practices of the implementation of the environmental mitigation measures were observed during the course of monitoring and ad hoc inspection. |
|
|
(f) |
Fishing activity carried out by unknown person was observed at the monitoring station might disturb the riverbed in which the deposited sediment in the riverbed was re-suspended and result in elevated measurement of suspended solids at the monitoring station. |
|
|
(g) |
No measurement exceedance was recorded from the subsequent monitoring event. |
5
Ecology
5.1
Monitoring
Requirements
According to the requirements in the Updated EM&A Manual, regular impact ecological monitoring in terms of water quality, aquatic invertebrate and fish species shall be carried out on a monthly basis at the designated monitoring locations during the construction period of the Project. Further details of the impact ecological monitoring are presented in the following sections.
5.2
Monitoring
Locations
A total of seven (7) monitoring stations at Tung Chung Stream covering both River Park and other Public Works (road crossings, polders, and stormwater attenuation and treatment ponds) were identified for the construction phase monitoring.
The locations of the monitoring stations are presented in Table 5.1 and Appendix I1. Note that the exact monitoring locations were subject to fine adjustment based on site conditions (e.g. adverse weather conditions, blockage by plants, rocks or other obstacles).
Table 5.1: Impact Ecological Monitoring Stations
|
Monitoring Station |
Description |
Coordinates |
|||
|
|
Easting |
Northing |
Latitude (N) |
Longitude (E) |
|
|
RP1 |
Conservation Zone (Natural Section) |
811150 |
814469 |
22°16'07.95"N |
113°55'59.41"E |
|
RP2 |
Upstream of River Park |
811083 |
814895 |
22°16'21.77"N |
113°55'57.05"E |
|
RP3 (1) |
Revitalisation Zone (Channelised Section) |
811036 |
815076 |
22°16'27.66"N |
113°55'55.38"E |
|
RP4 |
Downstream of River Park |
810846 |
815402 |
22°16'38.25"N |
113°55'48.72"E |
|
PW1 |
Near Public Works |
811099 |
814589 |
22°16'11.83"N |
113°55'57.63"E |
|
PW2 (1) |
Near Public Works |
810933 |
815318 |
22°16'35.54"N |
113°55'51.79"E |
|
PW3 |
Near Public Works |
810789 |
815658 |
22°16'46.56"N |
113°55'46.71"E |
Note (1): Ecological Monitoring at the monitoring station RP3 and PW2 were suspended since March 2023 with the commencement of temporary river diversion in Tung Chung Stream.
5.3
Monitoring Frequency and Dates
As required under the Updated EM&A Manual, the impact ecological monitoring shall cover the full construction programme on a monthly basis. Table 5.2 summarises the frequency and monitoring dates for the impact monitoring during the reporting period.
Table 5.2: Impact Ecological Monitoring Schedule
|
Reporting Month |
River Park Study Area (RP1, RP2 and RP4) and Other Public Works Study Area (PW1 and PW3) |
|
Sep 2024 |
10 September 2024 |
5.4
Monitoring
Methodology
5.4.1
Stream Fauna
Several survey methods which covered different components of the stream fauna (which includes fish species and aquatic invertebrates) were used to monitor the study areas to yield a comprehensive result:
1. Direct Observation - covered all along the accessible part of the watercourse to provide a species list of fish and aquatic invertebrate with corresponding relative abundance.
2. Baited Fish Cage - At each sampling location, two replicates of baited fish cages were deployed for a duration of at least one hour. All collected fish and aquatic invertebrate species were recorded and their abundance were counted. This method may collect fishes which are wary of humans. Permit from the AFCD was obtained before the use of any equipment to collect stream fauna in any streams and watercourses.
3. Kick Sampling - at least two replicates of kick sampling were performed at each monitoring station to obtain aquatic invertebrate (and fish) samples. Kick sampling is a relatively quick method to survey aquatic invertebrates in shallow fast-flowing streams. A ~30 cm x ~30 cm kick sampler with ~0.5 mm mesh size was placed on the stream bed and the area just upstream of the sampler were vigorously disturbed by kicking for one minute. The contents of the net were transferred to suitable containers with freshwater for identification and counting in situ. All identifiable samples were released back to the sampling locations.
5.4.2
Water Quality
Ecologically related water quality monitoring, including in situ measurements and collection of water samples for laboratory analysis, was conducted at each monitoring location. Duplicate water samples were collected at surface water level at each monitoring location.
Water quality parameters including Dissolved Oxygen (in % saturation and mg/L), pH value, temperature, turbidity and salinity were measured in situ while the other parameters, including Suspended Solids (SS), Ammonia, Total Kjeldahl Nitrogen (TKN), Total Phosphorus (TP), Escherichia coli (E. coli), 5-day Biochemical Oxygen Demand (BOD5), Chemical Oxygen Demand (COD) and Oil & Grease, were measured at a HOKLAS accredited laboratory for water quality analysis. Other relevant data, including time, water depth, weather conditions and special phenomena or works underway in the vicinity were recorded.
The measured water quality parameters and laboratory testing method are shown in Table 5.3.
Table 5.3: Ecologically related Water Quality Monitoring Parameters and Testing Methods
|
Parameter |
|
|
|
In situ measurements |
Instrument Range Capability |
Measurement rEsolution |
|
pH |
0 – 14 pH Units |
0.01 pH units |
|
Salinity |
0 – 40 ppt |
0.01 ppt |
|
Temperature |
0 – 45°C |
0.1°C |
|
Turbidity |
0 – 1000 NTU |
0.1 NTU |
|
Dissolved Oxygen (DO) |
0 – 20 mg/L |
0.1 mg/L |
|
|
0 – 200% saturation |
0.1% saturation |
|
Laboratory testing and analyses |
Method Reference |
Level of Reporting |
|
Suspended Solids (SS) |
APHA 2540 D |
0.5 mg/L |
|
Ammonia as N |
APHA 4500 NH3 G |
0.01 mg/L |
|
Total Kjeldahl Nitrogen (TKN) as N |
APHA
4500 P: J; |
0.05 mg/L |
|
Total Phosphorus as P |
APHA 4500 P: J |
0.01 mg/L |
|
E. coli |
TM09/EC/10/98 Issue 3, HKEPD |
1 CFU/100mL |
|
5-day Biochemical Oxygen Demand (BOD5) |
APHA 5210 B |
1 mg/L |
|
Chemical Oxygen Demand (COD) |
APHA 5220 B |
2 mg/L |
|
Oil & Grease |
APHA 5520 B |
2 mg/L |
The equipment used for the in situ ecologically related water quality monitoring work is summarised in Table 5.4. Copies of the calibration certificates are attached in Appendix I2.
Table 5.4: Ecologically-related Water Quality Monitoring Equipment
|
Equipment |
Brand and Model |
|
Multifunctional Meter (in-situ measurement of DO, pH, temperature, salinity and turbidity) |
Horiba U-53 (serial no. X42XKBNO) |
5.5
Action and Limit
Levels
The Action and Limit Levels for the impact ecological monitoring are defined in Table 5.5.
Table 5.5: Action and Limit Levels for Impact Ecological Monitoring
|
Exceedance Level |
Description |
|
Action Level |
Reduction in the monthly taxa diversity (i.e. number of species) of fish or aquatic invertebrate (macroinvertebrate only) of any monitoring station compared to the corresponding monitoring season and station of the baseline survey by 30%. |
|
Limit Level |
Reduction in the monthly taxa diversity (i.e. number of species) of fish or aquatic invertebrate (macroinvertebrate only) of any monitoring station compared to the corresponding monitoring station and season of the baseline survey by 50%. |
For ease of reference, the Action and Limit Levels for aquatic invertebrate and fish (rounded to nearest 0.1) in Wet Season (April to October) and Dry Season (November to March) at each monitoring station are provided in Table 5.6 and Table 5.7 respectively.
Table 5.6: Action Level (AL) and Limit Level (LL) for Number of Aquatic Invertebrate Species at Each Monitoring Station during Wet (Apr - Oct) and Dry (Nov - Mar) Seasons
|
River Park Study Area |
Public Works Study Area |
|||||||
|
|
RP1 |
RP2 |
RP3 |
RP4 |
PW1 |
PW2 |
PW3 |
|
|
Wet season |
AL |
2.1 |
1.2 |
1.3 |
2.0 |
0.9 |
2.8 |
1.6 |
|
LL |
1.5 |
0.9 |
1.0 |
1.5 |
0.7 |
2.0 |
1.2 |
|
|
Dry season |
AL |
1.5 |
1.3 |
0.7 |
2.5 |
1.4 |
2.6 |
0.5 |
|
LL |
1.1 |
0.9 |
0.5 |
1.8 |
1.0 |
1.9 |
0.4 |
|
Table 5.7: Action Level (AL) and Limit Level (LL) for Number of Fish Species at Each Monitoring Station during Wet (Apr – Oct) and Dry (Nov – Mar) Seasons
|
River Park Study Area |
Public Works Study Area |
|||||||
|
|
RP1 |
RP2 |
RP3 |
RP4 |
PW1 |
PW2 |
PW3 |
|
|
Wet season |
AL |
3.6 |
3.5 |
0.9 |
5.0 |
2.8 |
0.9 |
4.4 |
|
LL |
2.6 |
2.5 |
0.7 |
3.6 |
2.0 |
0.7 |
3.2 |
|
|
Dry season |
AL |
4.1 |
3.5 |
0.1 |
4.3 |
4.7 |
0.5 |
4.2 |
|
LL |
2.9 |
2.5 |
0.1 |
3.1 |
3.4 |
0.4 |
3.0 |
|
5.6
Results and
Observations
5.6.1
Environment of Stream Courses
The environment of stream courses at the monitoring stations for the River Park Study Area (RP1 to RP4) and other Public Works Study Area (PW1 to PW3) are presented in Table 5.8.
Table 5.8: Environment of Stream Courses at each Monitoring Station
|
Station Name |
Location |
Physical Environment |
|
RP1 |
Conservation Zone (Natural Section) |
Fast flowing natural stream. The substrate was dominant with boulders and rocks, and sands were sometimes observed. Woodland with dense vegetation was on the river banks. |
|
RP2 |
Upstream of River Park |
Moderate fast flowing natural stream. The substrate was in the form of boulders, rocks, sand and silt mixture. Short but dense herbaceous vegetation was on the right bank of the stream, while dense woodland was on the left bank. |
|
RP4 |
Downstream of River Park |
The channelised section of Tung Chung Stream ended at the upstream of RP4. RP4 is a moderate fast flowing natural stream close to the estuary. The substrate was in the form of boulders, rocks, sand and silt mixture. Woody plants and herbaceous plants were along the river banks. |
|
PW1 |
Near Public Works |
Fast flowing natural stream. The substrate was dominant with boulders and rocks, and sand was sometimes observed. Woodland with dense vegetation was on the river banks. Stagnant water with foul smell was observed at direct upstream of the monitoring station in the reporting month. |
|
PW3 |
Near Public Works |
A natural estuary. The substrate was dominant with sand and mud. Dense mangroves were on the shores of the estuary. |
Note (1): Ecological Monitoring at the monitoring station RP3 and PW2 were suspended since March 2023 with the commencement of temporary river diversion in Tung Chung Stream.
5.6.2
Stream Fauna
A total of 9 aquatic invertebrate species and 18 fish species were recorded across all monitoring stations during the reporting period. The monitoring results for aquatic invertebrate and fish species are summarised in Table 5.9 and Table 5.10. The monitoring data is provided in Appendix I4 and Appendix I5. Representative photos of the species of conservation importance and other species recorded are presented in Appendix I3.
Table 5.9: Summary of Aquatic Invertebrate Species Recorded in the Reporting Period
|
Common Name |
Species Name |
River Park Study Area |
Public Works Study Area |
||||
|
|
|
RP1 |
RP2 |
RP4 |
PW1 |
PW3 |
|
|
Pistol Shrimp |
Alpheidae |
|
|
|
|
✔ |
|
|
Small Minnow Mayfly |
Baetidae |
|
✔ |
✔ |
✔ |
|
|
|
Freshwater Shrimp |
Caridina cantonensis |
✔ |
|
|
|
|
|
|
Caddisfly |
Hydropsychidae |
✔ |
✔ |
|
✔ |
|
|
|
Freshwater Prawn |
Macrobrachium sp. |
|
|
✔ |
|
|
|
|
Common Stonefly |
Perlidae |
✔ |
|
|
|
|
|
|
Water Strider |
Ptilomera tigrina |
|
✔ |
|
✔ |
|
|
|
Freshwater Snail |
Tarebia granifera |
|
|
✔ |
|
|
|
|
Small Water Strider |
Veliidae |
✔ |
|
|
|
✔ |
|
|
|
Total no. of species |
4 |
3 |
3 |
3 |
2 |
|
|
Action Level (Wet Season) |
2.1 |
1.2 |
2.0 |
0.9 |
1.6 |
||
|
Limit Level (Wet Season) |
1.5 |
0.9 |
1.5 |
0.7 |
1.2 |
||
Table 5.10: Summary of Fish Species Recorded in the Reporting Period
|
Common Name |
Species Name |
River Park Study Area |
Public Works Study Area |
|||||
|
|
|
RP1 |
RP2 |
RP4 |
PW1 |
PW3 |
|
|
|
Beijiang Thick-lipped Barb |
Acrossocheilus beijiangensis(1) |
✔ |
|
|
✔ |
|
|
|
|
Asiatic Glassfish |
Ambassis sp. |
|
|
✔ |
|
|
|
|
|
Indo-Pacific Tropical Sand Goby |
Favonigobius reichei |
|
|
|
|
✔ |
|
|
|
Mosquito Fish |
Gambusia affinis |
|
|
✔ |
|
|
|
|
|
Fork Tongue Goby |
Glossogobius giuris |
|
|
✔ |
|
|
|
|
|
Broken-band Hillstream Loach |
Liniparhomaloptera disparis |
✔ |
✔ |
|
✔ |
|
|
|
|
Mullet |
Mugilidae |
|
|
✔ |
|
✔ |
|
|
|
Rice Fish |
Oryzias curvinotus(1) |
|
|
✔ |
|
|
|
|
|
Predaceous Chub |
Parazacco spilurus(2) |
✔ |
✔ |
|
|
|
|
|
|
Common Mudskipper |
Periophthalmus modestus |
|
|
|
|
✔ |
|
|
|
Sucker-belly Loach |
Pseudogastromyzon myersi |
✔ |
|
|
|
|
|
|
|
Javanese Fatnose Goby |
Pseudogobius javanicus |
|
|
|
|
✔ |
|
|
|
- |
Rhinogobius duospilus |
✔ |
✔ |
|
✔ |
|
|
|
|
Striped Loach |
Schistura fasciolata |
✔ |
|
|
|
|
||
|
Jarbua Terapon |
Terapon jarbua |
|
|
|
|
✔ |
||
|
Tilapia |
Tilapia sp. |
|
|
✔ |
|
|
||
|
Swordtail |
Xiphophorus hellerii |
✔ |
✔ |
|
✔ |
|
||
|
Variable Platyfish |
Xiphophorus variatus |
|
✔ |
|
✔ |
|
||
|
|
Total no. of species |
7 |
5 |
6 |
5 |
5 |
|
|
|
Action Level (Wet Season) |
3.6 |
3.5 |
5.0 |
2.8 |
4.4 |
|
||
|
Limit Level (Wet Season) |
2.6 |
2.5 |
3.6 |
2.0 |
3.2 |
|
||
Note (1): Species of conservation importance (Fellowes et. al., 2002)
Note (2): Species of conservation importance (Yue & Chen,1998)
No exceedance of Action and Limit Levels was recorded for the impact ecological monitoring in the reporting period, comparing against the baseline monitoring data. No action was thus required to be undertaken in accordance with the Event and Action Plan presented in Appendix I6.
5.6.3
Water Quality
As the EM&A programme of TCW already has its own river water quality monitoring (i.e. 3 times per week, refer to Section 4 of this EM&A Report) and its associated Action and Limit Levels, this section of ecologically-related water quality monitoring results (i.e. at monthly basis) will be adopted for facilitating the investigation in case of any trigger of Action and Limit Levels of the ecological monitoring. The ecologically related water quality monitoring result during the reporting period is summarised in Appendix I7.
5.7
References
Fellowes, J., M. Lau, D. Dudgeon, G.T. Reels, G.W.J., Ades, G. Carey, B. Chan, K. Roger, K.S. Lee M. Leven, K. Wilson and Y.T. Yu. 2002. Wild animals to watch: terrestrial and freshwater fauna of conservation concern in Hong Kong. Memoirs of the Hong Kong Natural History Society. 25:123-159.
Yue, P., and Chen, Y. 1998. China Red Data Book of Endangered Animals: Pisces. Science Press, Beijing. China. 256pp.
6
Waste Management Status
6.1
General
The Contractors of Contracts 5 and 6 have each obtained a waste disposal billing account and registered as chemical waste producer. Sufficient numbers of receptacles were available for general refuse collection and sorting.
All dump trucks engaged on site were equipped with Real Time Tracking and Monitoring (RTTM) system during the reporting period. The Surveillance Team of the ET conducted regular site inspections on the dump trucks and their track records. No illegal dumping and landfilling of C&D materials was found during the reporting period.
Wastes generated during this reporting period include mainly non-inert construction wastes. Reference has been made to the waste flow tables prepared by the Contractors. The quantities of different types of wastes and imported fill materials are summarised in Table 6.1.
Table 6.1: Quantities of Different Waste Generated and Imported Fill Materials for TCW
|
Month / Year |
Inert C&D Materials(a) (in ‘000m3) |
Imported Fill Materials(d) (in ‘000m3) |
Inert Construction Waste Re-used in the Contract (in ‘000m3) |
Inert Construction Waste Re-used in other Projects(e) (in ‘000m3) |
Non-inert Construction Waste(b) (in ‘000m3) |
Recyclable Materials(c) (in ‘000kg) |
Chemical Waste (‘000kg) |
|
Jul 2024 |
21.09 |
0 |
0 |
15.57 |
0.48 |
0.38 |
0 |
|
Aug 2024 |
8.89* |
0.10 |
0 |
6.99* |
0.12* |
0.40 |
0 |
|
Sep 2024 |
7.98 |
0.23 |
0 |
7.15 |
0.12 |
0.35 |
0 |
Notes: (a) Inert construction and demolition wastes include hard rock and large broken concrete, and materials disposed as public fill.
(b) Non-inert construction wastes include general refuse disposed at landfill.
(c) Recyclable materials include metals, paper, cardboard, plastics and others.
(d) Imported fill materials include public fill.
(e) Inert Construction Waste reused in other construction contracts under TCNTE.
(f) Updated figure for the previous month is reported and marked with an asterisk (*).
7
EM&A Site Inspection
7.1
Monitoring Requirements
Environmental site inspections were carried out on a weekly basis with the Contractors and ER to monitor the implementation of proper environmental pollution control and mitigation measures for air quality, noise, water quality, waste management, ecology and landscape and visual impacts under the Project.
7.2
Site Inspections and Key Observations
In the reporting period:
● Four (4) site inspections were carried out on 3, 10, 17 and 24 September 2024 for Contract 5; and
● Four (4) site inspections were carried out on 5, 12, 19 and 24 September 2024 for Contract 6.
Key observations during the site inspections are summarised in Table 7.1.
The Contractors were reminded to implement all relevant mitigation measures related to construction dust, construction noise, water quality, waste management, ecology and landscape and visual outlined in the EIA Report and the Updated EM&A Manual.
Table 7.1: Key Observations Identified during Site Inspections in this Reporting Period
|
Contract No. |
Inspection Date(s) |
Environmental Observation |
Recommendation / Remark |
|
Contract 5 |
3 Sep 2024 |
Area Part E and Part F ● No deficiency was observed |
● Nil |
|
10 Sep 2024 |
Area Part H ● No deficiency was observed |
● Nil |
|
|
17 Sep 2024 |
Area Part F ● A temporary drainage pipe connected with a submersible pump for diverting the construction runoff from the construction site to the communal drain was observed Area Part E ● No deficiency was observed |
Area Part F ● Divert the construction runoff to the wastewater treatment facility for proper treatment in accordance with Discharge Licence requirements before final discharge. |
|
|
24 Sep 2024 |
Area Part H ● Drip tray was not provided for the containment of air compressor and chemicals Area Part E ● No deficiency was observed |
Area Part H ● Provide drip tray for the proper containment of potential spillage from the air compressor and chemicals at the site |
|
|
Contract 6 |
5 Sep 2024 |
Road L29 ● NRMM label on the body of the road roller was worn out ● Noise Emission Label (NEL) on the body of the air compressor was found missing Bridge C ● Oil stain was observed on the ground underneath the air compressor Shek Mun Kap Road ● No deficiency was observed |
Road L29 ● Display a proper NRMM label on the body of the road roller ● Affix valid NEL on the body of the air compressor Bridge C ● Clean up the oil stain and handle as chemical waste; provide drip tray for the containment of the compressor |
|
|
12 Sep 2024 |
Bridge B ● Accumulation of stagnant water in the drip tray and oil stain on the ground were observed Visitor Centre and Road L30 ● No deficiency was observed |
Bridge B ● Remove the accumulated stagnant water from the drip tray to ensure the drip tray has adequate capacity for the containment of potential spillage from the generator; clean up the contaminated material and handle as chemical waste |
|
19 Sep 2024 |
Sewage Pumping Station-B ● Records of maintenance and flowmeter reading of the wastewater treatment facility were not updated Road L29 ● Drip tray was not provided for the containment of oil drums and chemicals Shek Mun Kap Road ● No deficiency was observed |
Sewage Pumping Station-B ● Updated records are maintained in accordance with the Discharge Licence requirements Road L29 ● Provide drip tray for the proper containment of oil drums and chemicals |
|
|
24 Sep 2024 |
Sewage Pumping Station-B ● Temporary drainage pipe for diverting construction runoff from the construction site was observed at the site ● Copy of Environmental Permit was not displayed at the site entrance Road L29 ● No deficiency was observed |
Sewage Pumping Station-B ● Divert the construction runoff to the wastewater treatment facility for proper treatment in accordance with Discharge Licence requirements before final discharge ● Display a copy of Environmental Permit at the site entrance in accordance with Permit requirements |
7.3
Landscape and Visual Mitigation Measures
Implementation of applicable landscape and visual mitigation measures (reference to the environmental protection measures MM1 to MM5, MM7 to MM8, MM10 to MM20 in Appendix C) was monitored in accordance with Manual. All measures undertaken by the Contractor during the construction phase and establishment work phase shall be audited by ET to ensure compliance with the intended aims of the measures.
The implementation status of the environmental protection measures is summarised below in Table 7.2. Examples of landscape and visual mitigation measures are shown in Table 7.3. The monitoring programme for detailed design, construction and establishment stages is presented in Table 7.4. Event and Action Plan for Landscape and Visual impacts is stated in Table 7.5.
Table 7.2: Landscape and Visual – Construction Phase Audit Summary
|
Landscape and Visual Mitigation Measures during Construction |
Implementation Status |
Relevant Contract(s) in the Reporting Period |
|
MM1- Optimization of Construction Areas & Providing Temporary Landscape on Temporary Construction |
Implementation of the measures were carried out during the detailed design stage of the Project. |
All works contracts |
|
MM2 - Minimize Topographical Changes |
||
|
MM3 - Preservation of Potentially Registerable OVTs, Rare and Protective Vegetation |
Tree Protection Specifications were provided in the relevant Contract Specifications respectively for implementation by the Contractors under the Project.
The Detailed Preservation and/or Translocation Plan for Plant Species of Conservation Importance was submitted under EP Condition 2.21 and accepted by EPD.
The Contractors’ performance on the implementation of the tree maintenance and protection measures were observed and checked by the ET weekly during construction period. |
All works contracts |
|
MM4 - Transplanting of Existing Trees |
Tree Transplanting Specifications were provided in the relevant Contract Specifications respectively for implementation by the Contractors under the Project where trees would unavoidably be affected by the construction works.
The Detailed Preservation and/or Translocation Plan for Plant Species of Conservation Importance was submitted under EP Condition 2.21 and accepted by EPD.
The Contractors were required to submit Method Statements for tree transplanting prior to the transplanting works. Tree inspections were conducted by ET to check the tree transplanting works implemented by the Contractors on site.
The Contractors’ performance on the implementation of trees maintenance and protection measures on transplanted trees were observed and checked by the ET bi-monthly during the 24-month establishment period after the completion of each batch of transplanting works. |
All works contracts |
|
MM5 – Screen Hoarding |
Implementation of mitigation measures was checked by ET during weekly site inspection. Implementation of the measures by Contractors was observed. |
All works contracts |
|
MM7 – Protection of Natural Rivers and Streams |
Implementation of mitigation measures was checked by ET during weekly site inspection. Implementation of the measures by Contractors was observed. |
Contract 6 |
|
MM8 - Preservation of Natural Coastline |
Implementation of the measures was carried out during the detailed design stage of the Project. |
Contract 5 |
|
MM10 – Compensatory Planting |
Not applicable during the reporting period |
All works contracts |
|
MM11 – Woodland Restoration |
Implementation of mitigation measures was checked by ET during weekly site inspection. Implementation of the measures by Contractors was observed. |
Contract 6 |
|
MM12 – Screen Planting |
Not applicable during the reporting period |
All works contracts |
|
MM13 – Roadside Planting |
Not applicable during the reporting period |
All works contracts |
|
MM14 – Aesthetic Design of Built Development |
Not applicable during the reporting period |
All works contracts |
|
MM15 – Maximise Greening on Structure |
Not applicable during the reporting period |
All works contracts |
|
MM16 – Noise Barrier Design |
Not applicable during the reporting period |
Contract 6 |
|
MM17 – Landscape Treatment for Polders & Stormwater Attenuation and Treatment Ponds |
Not applicable during the reporting period |
Contract 6 |
|
MM18 - Landscaping on Slopes |
Implementation of mitigation measures was checked by ET during weekly site inspection. Implementation of the measures by Contractors was observed. |
All works contracts |
|
MM19 - Landscape Treatment on Channelized Watercourses |
Not applicable during the reporting period |
Contract 6 |
|
MM20 - Lighting Control |
Implementation of mitigation measures was checked by ET during weekly site inspection. Implementation of the measures by Contractors was observed. |
All works contracts |
Table 7.3: Examples of Landscape and Visual Mitigation Measures
|
|
|
|
|
Landscaping on Slopes |
General view of tree protection zone for retained tree |
Transplanting of existing trees to temporary nursery site |
|
|
|
|
|
Control of night-time lighting using light hooding |
Protection of Natural Rivers and Streams |
Compensatory Planting and Woodland Restoration |
Table 7.4: Monitoring Programme for Landscape and Visual
|
Stage |
Monitoring Task |
Monitoring Report |
Form of Approval |
Frequency |
|
Design |
Monitoring of design works against the recommendations of the landscape and visual impact assessments within the EIA should be undertaken by the Engineer and Landscape Architect, to ensure that they fulfil the intentions of the mitigation measures. Any changes to the design, including design changes on site should also be checked |
Report by CEDD / ER confirming that the design conforms to requirements of EP. |
Approved by CEDD |
At completion of design stage |
|
Construction |
Monitoring of the contractor’s operations during the construction period. |
Report on Contractor's compliance by ET |
Counter signature of report by IEC |
Monthly |
|
Establishment Works |
Monitoring of the planting works during the 24-months Establishment Period after completion of the construction works. |
Report on Contractor's compliance by ET |
Counter signature of report by IEC |
Bi-monthly |
Table 7.5: Event and Action Plan for Landscape and Visual
|
Event Action Level |
Action |
|||
|
|
ET |
IEC |
ER |
Contractor |
|
Design Check |
Check final design conforms to the requirements of EP and prepare report. |
Check report. Recommend remedial design if necessary. |
Undertake remedial design if necessary. |
|
|
Non-conformity on one occasion |
Inform the IEC, ER and the Contractor Discuss remedial actions with IEC, ER and Contractor Monitor remedial actions until rectification has been completed. |
Check report. Check Contractor’s working method Discuss with ET, ER and Contractor on possible remedial measures. Advise ER on effective of proposed remedial measures. Check implementation of remedial measures. |
Confirm receipt of notification of non-conformity in writing Review and agree on the remedial measures proposed by the Contractor Ensure remedial measures are properly implemented. |
Identify source and investigate the non-conformity Amend working methods agreed with ER as appropriate Rectify damage and undertake any necessary replacement. |
|
Repeated Non-conformity |
Identify sources Inform the Contractor, IEC and ER Discuss inspection frequency Discuss remedial actions with IEC, ER and Contractor Monitor remedial actions until rectification has been completed If non-conformity stops, cease additional monitoring. |
Check inspection report Check Contractor’s working method Discuss with ET, ER and Contractor on possible remedial measures Advise ER on effectiveness of proposed remedial measures. |
Notify the Contractor In consultation with the ET and IEC, agree with the Contractor on the remedial measures to be implemented Supervise implementation of remedial measures. |
Identify source and investigate the non-conformity Amend working methods agreed with ER as appropriate Rectify damage and undertake any necessary replacement. Stop relevant portion of works as determined by ER until the non-conformity is abated. |
7.4
Land Contamination Assessment
Re-appraisal of the remaining areas of the Possible Development Areas (PDAs) (including Area 46) and works areas for the associated infrastructures for both Contract 5 and Contract 6 in accordance with Section 8.3.4 and 8.4.2 of the approved EIA report (AEIAR-196/2016) and Section 10.3 of the Updated EM&A Manual were implemented and the associated reports were approved by EPD.
Remediation works in Area 42 was completed in accordance with the Contamination Assessment Report (CAR) and the Remediation Action Plan (RAP) as approved by EPD. Revised Remediation Report for Area 42 was submitted to EPD on 9 August 2023 and approved by EPD on 28 August 2023. Site Investigation at the potentially contaminated sites/surveyed sites in Chung Mun Road, Road L29 and Shek Mun Kap Road was completed in accordance with the Supplementary CAP as approved by EPD. CAR was approved by EPD on 11 January 2023. Site investigation for Site TC-1 located in Area Part F was completed in accordance with the Supplementary CAP as approved by EPD. CAR was approved by EPD on 16 May 2023. Site investigation for Site TC-4 located in Chung Mun Road was carried out in July 2023 in accordance with the Supplementary Contamination Assessment Plan as approved by EPD. Revised Supplementary Contamination Assessment Report for Site TC-4 was approved by EPD on 5 October 2023.
Further site investigation/reappraisal on land contamination for other potentially contaminated sites, surveyed sites, remaining areas and works areas in TCW would be conducted under separate works contract(s) in accordance with the approved EIA Report and Updated EM&A Manual.
7.5
Monitoring for Compensation Woodland
Compensation Woodland Planting was completed in May 2022. With the approval from EPD on the monitoring proposal in October 2022, the monitoring for Compensation Woodland was commenced in November 2022. Quarterly post-planting monitoring report for August 2024 was submitted to EPD on 27 September 2024. Photos of the Compensation Woodland planting are shown in Table 7.6.
Table 7.6: Photos of the Compensation Woodland Planting
|
|
|
7.6
Monitoring for Preserved/Transplanted Plant Species of
Conservation Importance
For the plant species of conservation importance within the works area of Contract 5, there were three (3) individuals of Gmelina chinensis, six (6) individuals of Aquilaria sinensis and five (5) individuals of Canthium dicoccum identified. One (1) individual of Gmelina chinensis, two (2) individuals of Aquilaria sinensis and two (2) individuals of Canthium dicoccum were recommended being preserved in-situ. The remaining individuals were recommended to be removed owing to poor form and structure condition.
As for the plant species of conservation importance within the works area of Contract 6, there were twelve (12) individuals of Aquilaria sinensis identified. Three (3) individuals of Aquilaria sinensis were recommended being preserved in-situ while two (2) individuals of Aquilaria sinensis were recommended being transplanted to the receptor site in accordance with the Preservation and/or Translocation Proposal for Plant Species of Conservation Importance submitted under section 3.1.1 of Detailed Preservation and/or Translocation Plan for Plant Species of Conservation Importance (Condition 2.21 of the EP No. EP-519/2016). The remaining individuals were recommended to be removed owing to poor form and structure condition.
7.6.1
Preserved Plant Species of Conservation Importance
Monthly monitoring of a total of eight (8) individuals of the plant species of conservation importance which are recommended to be preserved in-situ, were implemented by the Qualified Botanist (QB) under Contract 5 and Contract 6 during the reporting period.
Monthly monitoring was conducted by QB appointed under Contract 5 on 30 September 2024. One of the epicormic branch attached to the individual of Canthium dicoccum (Tree No. T8231) under Contract 5 was found fallen from its own trunk on 3 May 2024 after the inclement weather. The overall condition of the individual and its remaining part was fair. Application of insecticides and fungicides on wound was carried out. No obvious old termite tracks were found at the individual of Aquilaria sinensis (Tree No. U041) under Contract 5 during the reporting period. Peeling off of bark near trunk base was observed at the individual and internal decay was worsening with sounding test. The risk of trunk failure was high as the trunk wound was significantly decayed. Adjustment of staking was carried out at the individual during the reporting period. Wound wood development was observed at the individual of Gmelina chinensis (Tree No. U042) under Contract 5. Application of insecticide on the wound was carried out. Crack on trunk base was found at the individual of Aquilaria sinensis (Tree No. U043) under Contract 5. Fungal fruiting bodies were found on the trunk and the trunk wound was significantly decayed. The risk of trunk failure was high. The structural condition of the individual would be kept monitoring by QB. Application of fungicide and insecticide were carried out at U041 and U043. Trunk protection pads were readjusted for U041, U042 and U043. No specific observations were made for the individual of Canthium dicoccum (Tree No. T8217) during the reporting period.
As advised by Contract 6, three (3) individuals of Aquilaria sinensis (Tree No. A9, A10, A11) under Contract 6 were found to be felled illegally on 21 August 2023. The case was reported to the Hong Kong Police and EPD on 21 August 2023.
Photographic record and tree schedule of the preserved plant species of conservation importance monitoring are provided in Appendix J.
ET will continue to monitor the implementation of monitoring of in-situ preserved plant species of conservation importance.
7.6.2
Transplanted Plant Species of Conservation Importance
With the approval from EPD, the translocation of the two (2) individuals of Aquilaria sinensis to temporary holding nursery in Tai Po as stipulated in the revised Proposal for Plant Species of Conservation Importance for Contract 6 was completed on 29 September 2023. Monthly monitoring and maintenance works (e.g. weeding and watering) for the transplanted individuals for maintain the plant health and survival were carried out until translocation to the receptor site. Monthly monitoring was conducted by QB appointed under Contract 6 on 10 September 2024. The foliage density of the individual of Aquilaria sinensis (Tree No. A12) was still low. Dieback was observed at both individuals of A8 and A12. Regular watering, grass cutting and weeding were carried out and the conditions of these individuals were closely monitored. The severity of insect feeding at both individuals (Tree No. A8 and A12) was low during the reporting period. Application of fertilizer and adjustment of staking were carried out at both individuals during the reporting period. Application of fungicide was carried out on trunk wound at the individual of A8.
Photographic record and tree schedule of the transplanted plant species of conservation importance monitoring are provided in Appendix J.
8
Implementation Status of
Environmental Mitigation Measures
A summary of the Environmental Mitigation Implementation Schedule is presented in Appendix C. The necessary mitigation measures were implemented properly for the Project.
9
Summary of Exceedances of the
Environmental Quality Performance Limit
No Action/Limit Level exceedance was recorded for the impact air quality monitoring (1-hour TSP) in the reporting period.
No Limit Level exceedance was recorded for the construction noise monitoring in the reporting period. However, one (1) Action Level exceedance was triggered from one (1) environmental complaint related to noise nuisance received in the reporting period.
One (1) Action Level exceedance was recorded for impact water quality monitoring in the reporting period. The investigation on the Action Level exceedance was conducted and the result was summarised in Section 4.7.
No Action/Limit Level exceedance was recorded for impact ecological monitoring in the reporting period.
Cumulative statistics on exceedance are summarised in Appendix K.
10
Summary of Complaints, Notification
of Summons and Successful Prosecutions
There was no notification of summons or prosecution recorded in the reporting period.
One (1) environmental complaint related to both Contract 5 and Contract 6 was received in the reporting period. Investigation was conducted for the environmental complaint in accordance with the complaint handling process as stated in the Complaint Management Plan. Environmental complaint in the reporting period is summarised in Table 10.1 below.
Table 10.1: Summary of Environmental Complaints
|
|
Complaints |
Investigation/Follow Up action(s) |
|
1 |
Environmental complaint related to both Contract 5 and Contract 6 was referred by EPD on 12 September 2024 regarding noise pollution from CEDD construction site on Tung Chung Waterfront Road at midnight |
The concerned area was the site office of TCW. As confirmed by both Contractors, no construction activities were carried out at the concerned area. |
Statistics on complaints, notifications of summons, successful prosecutions are summarised in Appendix K.
11 Future Key Issues
11.1
Construction Programme for the Coming Reporting Period
Works to be undertaken in the coming reporting period (October 2024) are summarised in Table 11.1 below, together with the key issues and the key mitigation measures.
The ET will keep track on the construction works to confirm compliance of environmental requirements and the proper implementation of all necessary mitigation measures. The ET will also recommend to the Contractors about the environmental toolbox topics on the abovementioned key issues for the next reporting period.
11.2
Monitoring Schedule for the Coming Reporting Period
The tentative schedules for environmental monitoring in October 2024 are provided in Appendix L.
Table 11.1: Major Activities for the next Reporting Period
|
Activities |
Key Issues |
Key Mitigation Measures |
|
Contract No. NL/2020/05 ("Contract 5") Tung Chung New Town Extension – Site Formation and Infrastructure Works at Ma Wan Chung |
||
|
● Sloping Work, Road Work, Excavation for Retaining Wall, Temporary ELS Work (Tie-Back Drilling and Installation, Sheet-piling and Excavation), Drainage Work (Excavation, Pipe Installation and Concreting) and Rising Main Installation, Sheet-pile Installation, Retaining Wall Construction and Temporary Pipe-pile Wall Construction at Part E; ● Sheet-pile Installation for Drainage Work, Excavation and Installation for Drainage Work, Covered Walkway Construction, Drainage Pipe Jacking Excavation Work at Part F; ● Excavation and Reinforce Concrete Work for Pier Caps, Column and Abutment, Tree Removal, Temporary Platform Erection, Flexible Barrier Construction and No-fine Concrete Pits Construction at Part G; ● Sheet-pile Installation, Temporary Pipe-pile Wall Construction, Excavation for Retaining Wall Construction, Construction of Barrier-Free-Access, Retaining Wall, Plant Room and Service Building Construction, Hiking Trail Construction, Drainage Work Construction, Soil Nail Construction and Excavation for Barrier-Free-Access, Backfilling and Landscape Work and Construction of Pavilion at Part H. |
● Dust Emission ● Handling and storage of C&D materials generated from construction activities ● Noise from plant operation ● Emission of dark smoke from PMEs ● Efficiency of wastewater and drainage management ● Tree Protection |
● Good site practices ● Regular water spraying on stockpiles ● Provide tarpaulin sheets coverage on stockpiles ● Sorting and reuse of C&D materials as far as practicable ● Use of QPME and noise barrier/acoustic mat ● Regular maintenance of PMEs ● Implementation of wastewater and drainage management ● Retain and protect all existing trees and vegetation within the study area which are not directly affected by the works |
|
Contract No. NL/2020/06 ("Contract 6") Tung Chung New Town Extension – Site Formation and Infrastructure Works at Tung Chung Valley, Phase 1 |
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|
● Excavation, Site Clearance, Clutch Piling, Reinforce Concrete Work for Bridge A and Soldier Pile Wall Construction (Piling Work and Excavation for Capping Beam and Skin Wall) at Road L29; ● Drainage and Road Work, Utility Work, Water Piping Work and Construction Work for Bridge B at Road L30; ● Site Clearance, Excavation, ELS Work, Water Main, Rising Main and Drainage Pipe Installation, Hard Paving, Backfilling and Compaction at Yu Tung Road; ● Site Clearance, Excavation, ELS Work, Water Piping Work, Sewerage Work, Drainage Work, Sloping Work, Retaining Wall Construction and Backfilling for Cycle Track and Footpath at Chung Mun Road; ● Excavation, Site Clearance, Construction for Abutment of Bridge C, Retaining Wall Construction, Backfilling and Drainage Work at Shek Mun Kap Road; ● Reinforce Concrete Work, Demolition of Temporary Bridge B and Backfilling Work at Visitor Centre; ● Reinforce Concrete Work and Water Proofing Work at Sewage Pumping Station-A; ● ELS Work at Sewage Pumping Station-B; ● Drainage Work and Backfilling at SATP A01; ● Excavation, Retaining Wall Construction and Site Clearance at SATP A02; ● Site Clearance and Excavation at SATP A07. |
● Dust Emission ● Handling and storage of C&D materials generated from construction activities ● Noise from plant operation ● Emission of dark smoke from PMEs ● Efficiency of wastewater and drainage management ● Tree Protection |
● Good site practices ● Regular water spraying on stockpiles ● Provide tarpaulin sheets coverage on stockpiles ● Sorting and reuse of C&D materials as far as practicable ● Use of QPME and noise barrier/acoustic mat ● Regular maintenance of PMEs ● Implementation of wastewater and drainage management ● Retain and protect all existing trees and vegetation within the study area which are not directly affected by the works |
12 Conclusions and Recommendations
General
This EM&A Report presents the findings of the EM&A activities undertaken for the Project – i.e., Tung Chung New Town Extension (TCNTE) development in Tung Chung West (TCW) – during the period from 1 to 30 September 2024 in accordance with the Updated EM&A Manual and the requirements of the Environmental Permit (EP) (No. EP-519/2016).
Air Quality
No exceedance of Action/Limit Levels was recorded for the air quality monitoring (1-hour TSP) in the reporting period.
Noise
No exceedance of Limit Level was recorded for the construction noise monitoring in the reporting period. However, one (1) Action Level exceedance was triggered from the receipt of one (1) environmental complaint related to noise nuisance in the reporting period.
Water Quality
One (1) Action Level exceedance was recorded for impact water quality monitoring.
Ecology
No exceedance of Action/Limit Levels was recorded for impact ecological monitoring in the reporting period.
Environmental Site Inspections
Environmental site inspections were carried out during the reporting period. Recommendations on remedial actions were given to the Contractors for the deficiencies identified during the site inspections.
Environmental Complaint, Notification of Summons or Prosecution
There was no notification of summons or prosecution recorded in the reporting period.
One (1) environmental complaint related to both Contract 5 and Contract 6 was received in the reporting period. Investigation was conducted for the environmental complaint in accordance with the complaint handling process as stated in the Complaint Management Plan.
Recommendations
ET will keep track of the construction works to confirm compliance of environmental requirements and the proper implementation of all necessary mitigation measures.
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