Diagram

Description automatically generated

 

Text, letter

Description automatically generated


Text, letter

Description automatically generated

Contents

                         Abbreviations                                                                      

                        Executive Summary

1                             Introduction                                                                       

1.1                         Background 

1.2                         Scope of the EM&A Report

1.3                         Organization Structure

1.4                         Summary of Construction Works

1.5                         Summary of EM&A Programme Requirements

1.6                         Status of Statutory Environmental Compliance with the Environmental Permit                                                  

1.7                         Status of Other Statutory Environmental Requirements    

2                             EM&A Results for Tung Chung East                         

2.1                         Air Quality                                                                           

2.2                         Noise Monitoring                                                            

2.3                         Water Quality Monitoring                                         

2.4                         Compensation Woodland Monitoring             

2.5                         Preserved/Transplanted Plant Species of Conservation Importance Monitoring                                                                     

2.6                         Eco-shoreline Monitoring 

2.7                         Soft Shore Ecological Monitoring

2.8                         EM&A Site Inspection                                                       

2.9                         Waste Management Status                                           

2.10                      Landscape and Visual Monitoring                          

2.11                      Implementation Status of Environmental Mitigation Measures

2.12                      Summary of Exceedances of the Environmental Quality Performance Liimit                                                                                        

2.13                      Summary of Complaints, Notification of Summons and Successful Prosecutions                                                                     

3                             Future Key Issues                                                              

3.1                         Construction Programme for the Coming Month 

3.2                         Monitoring Schedule for the Coming Month   

4                             Conclusion and Recommendation                          

 
Annexes

 

Annex A  Project Organisation

Annex B  Environmental Mitigation Implementation Schedule

Annex C  Status of Submissions and Implementation Status of Mitigation Measures under EP

Annex D  Status of Statutory Environmental Requirements

Annex E  Air Quality
Annex E1 Calibration Certificates
Annex E2 Monitoring Schedule
Annex E3 Monitoring Results
Annex E4 Event and Action Plan

Annex F   Noise
Annex F1 Calibration Certificates
Annex F2 Monitoring Schedule
Annex F3 Monitoring Results
Annex F4 Event and Action Plan

Annex G  Water Quality
Annex G1 Calibration Certificates
Annex G2 Monitoring Schedule
Annex G3 Monitoring Results
Annex G4 Event and Action Plan

Annex H Compensation Woodland Monitoring

Annex I   Preserved/Transplanted Plant Species of Conservation Importance Monitoring

Annex J   Eco-shoreline Monitoring

Annex K  Soft Shore Ecology

Annex K1 Monitoring Schedule

Annex K2         Monitoring results

Annex K3         Event and Action Plan

Annex L  Landscape and Visual Monitoring

Annex L1         Examples of Landscape and Visual Mitigation Measures

Annex L2         Event and Action Plan

Annex M Cumulative Statistics on Exceedances, Environmental Complaints, Notification of Summons and Status of Prosecutions

Annex N  Monitoring Schedule for the Next Reporting Period

 

Abbreviations

C&D

Construction and Demolition

CAP

Contamination Assessment Plan

CEDD

Civil Engineering and Development Department

CWD

Chinese White Dolphin

DCM

Deep Cement Mixing

DO

Dissolved Oxygen

EIA

Environmental Impact Assessment

EIAO

Environmental Impact Assessment Ordinance

EIS

Ecologically Important Stream

EM&A

Environmental Monitoring and Audit

EP

Environmental Permit

EPD

Environmental Protection Department

ER

Engineer's Representative

ERM

ERM-Hong Kong, Limited

ET

Environmental Team

HVS

High Volume Sampler

IEC

Independent Environmental Checker

PDA

Planned Development Area

PME

Powered Mechanical Equipment 

QPME

Quality Powered Mechanical Equipment 

RAP

Remediation Action Plan

RR

Remediation Report

RTTM

Real Time Tracking and Monitoring

SS

Suspended Solid

TCB

Tung Chung Bay

TCE

Tung Chung East

TCNTE

Tung Chung New Town Extension

TCW

Tung Chung West

The Project

Tung Chung New Town Extension (East)

THW

Tai Ho Wan

TSP

Total Suspended Particulate

Updated EM&A Manual

Updated Environmental Monitoring and Audit Manual for Tung Chung New Town Extension prepared by ERM under Agreement No. CE 60/2017 (EP) and deposited to EPD under Environmental Permit No. EP-519/2016

 


Executive Summary

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).  ERM-Hong Kong, Limited (ERM) is commissioned to undertake the role of Environmental Team (ET) for the construction and operation of TCE Project (“the Project”) in accordance with the requirements specified in the EP, Updated Environmental Monitoring and Audit (EM&A) Manual, EIA Report of the TCNTE project and other relevant statutory requirements. 

The construction of the Contract No. NL/2017/03 - Tung Chung New Town Extension – Reclamation and Advance Works (“Contract 1”) at TCE commenced on 9 July 2018.

The construction of the Contract No. NL/2020/02 - Tung Chung New Town Extension – Salt Water Supply System (“Contract 2”) at TCE commenced on 4 September 2021.

The construction of the Contract No. NL/2020/03 - Tung Chung New Town Extension – Major Infrastructure Works in Tung Chung East (“Contract 3”) at TCE commenced on 5 November 2021.

The construction of the Contract No. NL/2020/07 - Tung Chung New Town Extension – Tai Ho Interchange (“Contract 7”) at TCE commenced on 15 March 2022.

This is the Monthly EM&A report presenting the EM&A works carried out during the period from 1 to 31 March 2023 for the TCE Project in accordance with the Updated EM&A Manual. 

A summary of monitoring and audit activities conducted in the reporting period is listed below:

Air Quality Monitoring                            5 sessions

Noise Monitoring                                     5 sessions

Water Quality Monitoring                       14 sessions

Preserved Plant Species Monitoring        1 session

Soft Shore Ecological Monitoring            1 session

 Environmental Site Inspection

-          Contract 1                                     5 sessions

-          Contract 2                                     5 sessions

-          Contract 3                                     5 sessions

-          Contract 7                                     4 sessions

Environmental Management Meeting

-          Contract 1                                     1 session

-          Contract 2                                     1 session

-          Contract 3                                     1 session

-          Contract 7                                     1 session 

Environmental auditing works, including weekly site inspections of construction works conducted by the ET, audit of works vessels, audit of implementation of Complaint Management Plan, Dolphin Watching Plan, Works Vessel Travel Route Plan, Silt Curtain Deployment Plan, Spill Response Plan, Detailed Preservation and/or Translocation of Plant Species of Conservation Importance, Detailed Compensatory Woodland Planting Plan 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 construction air quality monitoring in the reporting period.

Breaches of Action and Limit Levels for Noise

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

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 according to the EM&A programme.  The exceedance was considered not related to this Project after investigation.

Eco-shoreline Monitoring

Mangrove eco-shoreline and rocky eco-shoreline are under construction while the construction of vertical eco-shoreline has been substantially completed.

Soft Shore Ecological Monitoring

Based on the impact monitoring conducted during the reporting period, there was no evidence showing any significant difference in intertidal communities when compared against the data obtained during baseline monitoring.  The ET will continue to observe the change in density or the distribution pattern of horseshoe crab, seagrass and intertidal soft shore communities taking into account natural fluctuation in respect of the occurrence and distribution pattern.

Environmental Complaints, Non-compliance & Summons

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

One (1) environmental complaint related to Contract 1 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.

Key Issues For The Coming Month

Potential environmental impacts arising from the upcoming construction activities in the next reporting period of April 2023 are mainly associated with dust emission, noise from barge and plant operation during normal working hours and restricted hours, elevation in SS due to marine filling works, disturbance to Chinese White Dolphin (CWD) during marine works, handling and storage of C&D materials generated from construction activities, efficiency of wastewater and drainage management and tree protection.  The ET will keep track on the construction works to confirm compliance of environmental requirements and the proper implementation of all necessary mitigation measures.  The ET will also recommend to the Contractor about the environmental toolbox topics on the abovementioned key issues for the coming month.

 


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).

ERM-Hong Kong, Limited (ERM) is commissioned to undertake the role of Environmental Team (ET) for the construction and operation of TCE Project (“the Project”) in accordance with the requirements specified in the EP, Updated Environmental Monitoring and Audit (EM&A) Manual ([1]), EIA Report of the TCNTE project ([2]) and other relevant statutory requirements.

The TCNTE comprises the following elements:

(a)     TCE Project

1.           Reclamation of the seabed by a non-dredged method at TCE to form a total of about 130 hectares of land;

2.           Construction of about 4.9 kilometers of seawalls, with an eco-shoreline, three drainage box culvert outfalls, three circulation drains and a seawater intake at TCE;

3.           Provision of infrastructure for Tung Chung Area 58, including construction of a single two-lane road with a footpath and the associated utility works;

4.           Construction of proposed open space;

5.           Construction of roads, footpaths, cycle tracks and the associated junction / road improvement works;

6.           Engineering infrastructure works covering drainage, sewerage, waterworks (including a fresh water service reservoir, a salt water service reservoir and a salt water pumping station), common utility tunnels and landscaping works; and

7.           Implementation of environmental mitigation measures and environmental monitoring and audit programme for the works.

(b)     TCW Project

1.           Site formation works at TCW;

2.           Construction of proposed open space;

3.           Construction of the River Park including a visitor centre at TCW; and

4.           Construction of sustainable urban drainage systems at TCW.

The locations of Contracts 1, 2, 3 and 7 are shown in Figure 1.1 to 1.4.  The construction and the reclamation related marine works of Contract 1 commenced on 9 and 13 July 2018, respectively.  The construction of Contracts 2, 3 and 7 commenced on 4 September 2021, 5 November 2021 and 15 March 2022, respectively.

1.2                                       Scope of the EM&A Report

This is the Monthly EM&A Report for the TCE Project which summarises the key findings of the EM&A programme during the reporting period from 1 to 31 March 2023 for the construction works.

1.3                                       Organization Structure

The organization structure of the Project is shown in Annex A.  The key personnel contact names and contact details are summarized in Table 1.1 below.

Table 1.1         Contact Information of Key Personnel

Party

Position

Name

Telephone

Environmental Team (ET)

(ERM-Hong Kong, Limited)

ET Leader

Kelvin So

3894 9504

Deputy ET Leader

Deputy ET Leader

Raymond Chow

Candy Wong

3894 9509

3894 9508

 

 

 

 

Independent Environmental Checker (IEC)

(Binnies Hong Kong Limited)

IEC

Manuel Chua

3894 9807

Deputy IEC

 

Edward Lau

3894 9695

 

Contract No. NL/2017/03 - Tung Chung New Town Extension – Reclamation and Advance Works (Contract 1)

Civil Engineering and Development Department

 

 

Senior Geotechnical Engineer

 

C H Yan

3894 9702

Marine Conservation Officer

 

Wo King Tai

3894 9707

Engineer’s Representative

(ER)

(AECOM Asia Company Limited)

 

Principal Resident Engineer

Chief Resident Engineer

Senior Resident Engineer

Senior Resident Engineer

Frankie Fan

 

Chris Cheung

 

Chris Chow

 

Edwin Fu

3894 9603

 

3894 9604

 

3894 9651

 

3894 9644

Resident Engineer

Nelson Ling

3894 9647

Senior Inspector of Works

 

C K Liu

3894 9733

Contractor

(Build King – SCT Joint Venture)

 

Site Agent

David Wong

9653 8635

Civil Division Head

Marco Chan

9257 7033

Environmental Officer

Issac Wong

9873 8968

24-hour Complaint Hotline

-

5976 1853

 

 

 

 

Contract No. NL/2020/02 - Tung Chung New Town Extension – Salt Water Supply System (Contract 2)

Civil Engineering and Development Department

 

Senior Engineer

Patrick C Y Yeung

2231 4435

Electrical & Mechanical Engineer

 

Samson K L Yip

2231 4460

Engineer’s Representative

(ER)

(AECOM Asia Company Limited)

 

Principal Resident Engineer

Senior Resident Engineer

Frankie Fan

 

Sunny Ng

3894 9603

 

3894 9605

Senior Resident Engineer

Vincent Leung

3894 9645

Resident Engineer

Terence Chan

3894 9683

Senior Inspector of Works

 

Wong Ting Yu

3894 9706

Contractor

(China Geo-Engineering Corporation)

 

Construction Manager

Ambrose Kwong

6198 7787

Site Agent

Timothy Lo

9661 2662

Construction Team Leader

Aaren Li

6468 8138

Environmental Officer

Aaren Li

6468 8138

 

24-hour Complaint Hotline

-

5976 1853

 

 

 

 

Contract No. NL/2020/03 - Tung Chung New Town Extension – Major Infrastructure Works in Tung Chung East (Contract 3)

Civil Engineering and Development Department

 

Senior Engineer

Eddie W C Lam

2231 4445

Senior Engineer

Phoebe Tang

2231 4423

Engineer

Timothy H M Chan

2231 4473

Engineer

Colin K C Wong

2231 4417

Engineer

Wing Chen

3894 9704

 

 

 

 

Engineer’s Representative

(ER)

(AECOM Asia Company Limited)

 

Principal Resident Engineer

Frankie Fan

 

3894 9603

 

Chief Resident Engineer

Gloria Tang

3894 9639

Senior Resident Engineer

Edwin Fu

3894 9644

Resident Engineer

David Li

3894 9684

 

Resident Engineer

Carl Yu

3894 9671

 

Senior Inspector of Works

Douglas Ng

3894 9737

Contractor

(Build King Civil Engineering Limited)

 

Construction Manager

Cheung Siu Lun

2272 3680

Site Agent

Paul Lui

9095 7922

Deputy Site Agent

Aldous Lo

9225 0368

Construction Team Leader

Ken Yau

9197 2219

Environmental Officer

Allen Wong

6012 2643

 

24-hour Complaint Hotline

-

5976 1853

 

 

 

 

Contract No. NL/2020/07 - Tung Chung New Town Extension – Tai Ho Interchange (Contract 7)

Civil Engineering and Development Department

Senior Engineer

Phoebe Tang

2231 4423

Engineer

Matthew Ng

2231 4449

 

 

 

 

 

 

 

Engineer’s Representative

(ER)

(AECOM Asia Company Limited)

Principal Resident Engineer

 

Frankie Fan

 

3894 9603

Senior Resident Engineer

Kelvin Kwan

3894 9641

Senior Resident Engineer

Brian Li

3894 9556

Resident Engineer

Kingsley Ho

3894 9552

Resident Engineer

Carl Yu

3894 9671

Senior Inspector of Works

 

Douglas Ng

3894 9554

Contractor

(Build King Civil Engineering Limited)

Site Agent

Hon Yee

9090 3109

Deputy Site Agent

Vincent Kwan

9833 1313

Construction Team Leader

Vincent Lo

9883 9229

Environmental Officer

Nash Wong

9810 1946

24-hour Complaint Hotline

-

5976 1853

 

 

 

 

1.4                                       Summary of Construction Works

As informed by the Contractor, details of the major works carried out in this reporting period are listed below:


Table 1.2         Major Activities in the Reporting Period

Activities

Key Issues

Key Mitigation Measures

Contract No. NL/2017/03 - Tung Chung New Town Extension – Reclamation and Advance Works (Contract 1)

Land-based Works

 

 

·         Ground investigation works

·         Placing of sorted public fill

·         Box culvert construction

·         Mangrove planting

·         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

·         Good site practices

·         Regular water spraying on stockpiles, unpaved haul road and land filling area

·         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

Marine-based Works

 

 

·         Laying of geotextile for seawall construction

·         Seawall construction (including vertical seawall, sloping seawall & eco-shoreline)

·         Elevation in impact on Water Quality due to sediment loss from sand blanket laying and marine filling works

·         Potential surface runoff

·         Potential filling material drop from barges

·         Disturbance to Chinese White Dolphin

·         Noise from marine vessels and plant operation during normal working hours or restricted hours

·         Dust emission during storage and transfer of sand/ sorted public fill

·         Emission of dark smoke from marine vessel

 

 

·         Provision of perimeter silt curtain

·         Provision of a leading seawall of at least 200m before marine filling works

·         Regular cleaning of accumulated sand/fill materials at the edge of the barges

·         Implementation of Dolphin Watching for the marine-based works

·         Strictly follow requirement under CNP for the use of PMEs and works within restricted period

·         Use of acoustic mat and other noise mitigation measures when necessary

·         Regular maintenance of engines and mechanical equipment

 


 

Contract No. NL/2020/02 - Tung Chung New Town Extension – Salt Water Supply System (Contract 2)

Land-based Works

 

 

·         RC structure of pumping station Construction at Portion 6

·         Construction of service reservoir and deflector wall, soil nailing works and ground investigation works for deflector wall and rigid barrier at Portion 3

·         Remedial works for frac out and construction of mud pit 2 for HDD works at Portion 3

·         Watermain laying works at Portion 3 along Yu Tung Road

·         Sheet piling and excavation works for ELS for pipe jacking at Portion 3

·         Watermain laying works and ELS for drainage works at Yi Tung Road at Portion 5

·         Trench excavation, manhole construction and pipe laying for drainage works at Portion 5A

·         Fabrication works at box culvert at Portion 5B

·         Establishment works for the compensatory planting at Portion 1 and 2

·         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, unpaved haul road and land filling area

·         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/2020/03 - Tung Chung New Town Extension – Major Infrastructure Works in Tung Chung East (Contract 3)

Land-based Works

 

 

·         Excavation and ELS works at Portion 104

·         Excavation and ELS works at CUT no.1,2 & 3 and supporting building

·         Construction works for CUT no. 1 structure

·         Construction works and furniture installation of PM office at WA9

·         Construction works of Contractor office at WA6

·         Drainage, Sewerage and watermain works at Road L4, L3 and L5

·         DCS works at Road L4 and L3.

·         Pipe laying works for twin rising mains/ watermain laying at Man Tung Road

·         Preparation works for pipe jacking works at Ying Tung Road

·         Preparation works for pipe jacking at Yi Tung Road

·         Foundation works for noise barrier at Portion 11

·         Road widening works at Ying Hei Road

·         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

 

·         Good site practices

·         Regular water spraying on stockpiles, unpaved haul road and land filling area

·         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

 


 

Contract No. NL/2020/07 - Tung Chung New Town Extension – Tai Ho Interchange (Contract 7)

Land-based Works

·         Open cut excavation and pipe laying for rising main and watermain at Portion 146-5 to 146-9

·         Trench excavation and pipe laying works at Portions 32 (Sham Shui Kok Drive), Portion 34 Phase 1 and Portions 36-38

·         Pipe pile installation, trench excavation and pipe laying works at Portion 32 (Access Road adjacent to MTRC Siu Ho Wan Depot)

·         WSD Subway DN200 diversion and DN1200 installation at Portion 35

·         ELS for construction of retaining walls FR1

·         ELS works for Pak Mong Subway Extension Phase 1

·         Piling works for Pak Mong Channel Bridge

·         G.I. works for retaining wall Wall D&E

·         Tree felling works at Portions 30 and 33

·         Temporary working platform at abutment A1b

·         Sheetpiling at Casting Yard A2

·         Temporary site office construction at Portion 31

Site clearance and tidiness

  

·         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, unpaved haul road and land filling area

·         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

The environmental mitigation implementation schedule is presented in Annex B.

1.5                                       Summary of EM&A Programme Requirements

The status for all environmental aspects are presented in Table 1.3.  The EM&A requirements remained unchanged during the reporting period.

 

Table 1.3         Summary of Status for the Environmental Aspects under the Updated EM&A Manual

Parameters

Status

Air Quality

Baseline Monitoring

The results of baseline air quality monitoring for TCE were reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4

 

Impact Monitoring

On-going for TCE, monitoring conducted three times every six days

 

 

Noise

Baseline Monitoring

The results of baseline noise monitoring for TCE were reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4

 

Impact Monitoring

On-going for TCE, 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 TCNTE

 

 

Water Quality

Baseline Monitoring

The results of baseline water quality monitoring for TCE were reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4

 

Impact Monitoring

On-going for TCE, 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)

To be conducted under TCW. Refer to the EM&A Reports of TCW.

 

 

Ecology

Monitoring for Compensation Woodland

 

Compensation Woodland Planting was completed on 30 September 2022.  Monitoring for Compensation Woodland will be carried out subject to the approval from EPD on the monitoring proposal.

 

Monitoring for Emergent Plant inside the future River Park

 

To be conducted under TCW. Refer to the EM&A Reports of TCW.

Monitoring for Translocated Amphibians of Conservation Importance

 

To be conducted under TCW. Refer to the EM&A Reports of TCW.

Monitoring for Preserved/Transplanted Plant Species of Conservation Importance

 

On-going, for transplanted plant species, transplantation works was carried out on 21 January 2022 and monitoring conducted once per week for the first three months; for preserved plant species, monitoring conducted once per month

 

Monitoring for Tung Chung Stream EIS and Wong Lung Hang EIS

 

To be conducted under TCW. Refer to the EM&A Reports of TCW.  Monitoring for Wong Lung Hang was not required and the proposal was accepted by EPD on 2 September 2021

 

 

Eco-shoreline Monitoring

To be conducted when eco-shoreline after completion of reclamation works

 

Tung Chung Bay and Tai Ho Wan Baseline Monitoring

The results of baseline soft shore ecological monitoring at Tung Chung Bay and Tai Ho Wan were reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4

 

Tung Chung Bay and Tai Ho Wan Impact Monitoring

On-going for TCE, monitoring conducted quarterly

 

 

Landscape and Visual

 

Baseline Monitoring

The results of baseline landscape and visual monitoring were reported in Baseline Monitoring Report and submitted to EPD under EP Condition 3.4

 

Impact Monitoring

On-going

 

 

Site Environmental Audit

Regular Site Inspection

 

On-going

Dolphin Watching Plan implementation measures

 

Under implementation by the Contractor of Contract 1

Works Vessel Travel Route Plan implementation measures

 

Under implementation by the Contractor of Contract 1

Silt Curtain Deployment Plan implementation measures

Under implementation by the Contractor of Contract 1

 

 

Spill Response Plan implementation measures

 

Under implementation by the Contractor of Contract 1

Detailed Preservation and/or Translocation Plan for Plant Species of Conservation Importance implementation measures

 

Under implementation by the Contractor of Contract 2

Detailed Compensatory Woodland Planting Plan implementation measures

Under implementation by the Contractor of Contract 2

 

 

Waste Management Plan implementation measures

Under implementation by the Contractor of Contract 1

 

 

Complaint Hotline and Email Channel

Under implementation by the Contractor of Contract 1, 2, 3 and 7

 

 

Environmental Log Book

On-going

Taking into account the construction works, impact monitoring of air quality, noise, water quality, soft shore ecological monitoring and waste management were carried out in the reporting period.  The monitoring schedule of air quality, noise, water quality and soft shore ecological monitoring are provided in Annex E2, Annex F2, Annex G2 and Annex K1, 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 Complaint Management Plan, Dolphin Watching Plan, Works Vessel Travel Route Plan, Silt Curtain Deployment Plan, Spill Response Plan, Detailed Preservation and/or Translocation Plan for Plant Species of Conservation Importance, Detailed Compensatory Woodland Planting Plan and Waste Management Plan. 

To promote the environmental awareness and enhance the environmental performance of the contractors, environmental trainings and regular environmental management meetings were conducted during the reporting period, which are summarized as below:

·        Four (4) environmental management committee meetings were held with the Contractors of Contract 1, 2, 3 and 7 and ER, ET, IEC and CEDD on 16, 15, 22 and 14 March 2023, respectively;

·        Environmental toolbox trainings on chemical handling, use of spill kits, operation and maintenance, waste management and disposal, dark smoke, mosquito control, dust suppression/waste management , nuisance to residence (light pollution/sudden noise/dusty work), site hygiene (rubbish, mosquito, rodent control) on 1, 3, 8, 10, 15, 17, 22, 24 and 29 March 2023 were conducted for Contract 1;

·        Environmental toolbox trainings on Quality Powered Mechanical Equipment (QPME) and proper drainage system /wastewater treatment and discharge on 14 and 21 March 2023 were conducted for Contract 2;

·        Environmental toolbox trainings on cement debagging and mixing, milling, paving, plastering and painting, environmental abatement facilities, acoustic decoupling measures, plant and machinery environmental precaution, chemical waste and handling of chemical spillage and energy saving on 2, 7, 9, 14, 16, 21, 23, 28 and 30 March 2023 were conducted for Contract 3;

·        Environmental toolbox trainings on site plant and machinery, maintenance of site access, boundary and haul roads, protection and preservation of trees, ground investigation and site clearance on 1, 8, 15, 22 and 29 March 2023 were conducted for Contract 7.

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 Annex C

1.7                                       Status of Other Statutory Environmental Requirements

The environmental licenses and permits, including environmental permit, discharge license under Water Pollution Control Ordinance, registration as chemical waste producer, construction noise permit and specified processes license, which were valid in the reporting period are presented in Annex D.  No non-compliance with environmental statutory requirements was recorded. 

2                                            EM&A Results for Tung Chung East

The EM&A programme for the Project required environmental monitoring for air quality, noise, water quality and marine ecology as well as environmental site inspections for air quality, noise, water quality, waste management, marine ecology and landscape and visual impacts.  The EM&A requirements and related findings for each component are summarized in the following sections.

2.1                                       Air Quality

2.1.1                                 Monitoring Requirements and Equipment

According to the Updated EM&A Manual of the Project, impact air quality monitoring in terms of 1-hour Total Suspended Particulate (TSP) was conducted three (3) times every six (6) days when the highest dust impact was expected.  The Action and Limit Levels of the air quality monitoring is provided in Table 2.1 below.

Table 2.1         Action and Limit Levels for 1-hour TSP

Location

Action Level, µg/m3

Limit Level, µg/m3

Monitoring station for Tung Chung East

279

500

Portable direct reading dust meters were used to measure 1-hour TSP levels in undertaking the air quality monitoring for the Project.  The proposed use of portable direct reading dust meters was submitted to IEC and obtained agreement from the IEC as stated in 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.

The monitoring location and equipment used in the impact air quality monitoring programme are summarized in Table 2.2 and illustrated in Figure 2.1.  Copies of the calibration certificates for the equipment are presented in Annex E1, which showed that the portable direct reading dust meter is capable of providing comparable results with that provided by a HVS.

  

Table 2.2         Air Quality Monitoring Details

Monitoring Station

Location

Parameter

Frequency and Duration

Monitoring Dates

Equipment

DM-1

Tung Chung Area 56 – Ying Tung Estate

1-hour TSP

Three times per six days during the construction period of the Project

3, 9, 15, 21 and 27 March 2023

1-hour TSP Dust Meter

SIBATA LD-3B (S/N: 336338)

Remark:

It should be noted that impact monitoring at other construction dust monitoring locations at TCE as stated in the Updated EM&A Manual will commence after the flat intake (for Monitoring Stations DM-2, DM-3 and DM-4).

2.1.2                                 Monitoring Schedule for the Reporting Month

The schedule for air quality monitoring during the reporting period is provided in Annex E2.

2.1.3                                 Results and Observations

The monitoring results for 1-hour TSP are summarized in Table 2.3.  The monitoring data and the graphical presentation are provided in Annex E3.

Table 2.3         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-1

30

18-47

279

500

Major dust sources in the reporting period included haul road traffic, excavation, loading and unloading of sand/fill material and filling works under the Project. 

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 Annex E4.

2.2                                       Noise Monitoring

2.2.1                                 Monitoring Requirements and Equipment

According to the Updated EM&A Manual of the Project, impact noise monitoring was conducted once per week during the construction phase of the Project.  The Action and Limit Level for construction noise of the Project is provided in Table 2.4 below. 

Table 2.4         Action and Limit Levels for Construction Noise

Time Period

Action Level

Limit Level

0700 - 1900 hours on normal weekdays

When one documented complaint is received

75 dB(A) *

Notes:

Limit level is exceeded when Leq ≥ 75 dB(A).  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.

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

Noise monitoring was performed using sound level meter at the designated monitoring stations NMS-CA-1A ([3]) ([4]) and NMS-CA-4 (Figure 2.2; Table 2.5) in accordance with the requirements stipulated in the Updated EM&A Manual.  Acoustic calibrator was deployed to check the sound level meters at a known sound pressure level.  Details of the deployed equipment are provided in Table 2.5.  Copies of the calibration certificates for the equipment are presented in Annex F1

Table 2.5         Noise Monitoring Details

Monitoring Station (a)

Location

Parameter

Frequency and Duration

Monitoring Dates

Equipment

NMS-CA-1A (b)

Residential premise in Tung Chung East – Century Link/Ying Hong Road (c)

 

30-minute measurement between 0700 and 1900 on normal weekdays (Monday to Saturday). Leq, L10 and L90 would be recorded.

Once per week for 30 mins during the construction period of the Project

3, 9, 15, 21 and 27 March 2023

Sound Level Meter: Rion NL-52 (S/N: 00542913)

 

Acoustic Calibrator: LARSON DAVIS CAL200 (S/N: 10227)

NMS-CA-4

Residential premise in the reclamation area next to Tung Chung East – Ying Tung Estate

 

 

Remarks:

(a)      It should be noted that impact monitoring at other construction noise monitoring locations at TCE as stated in the Updated EM&A Manual will commence after the flat intake of residential premise in TCE (for Monitoring Station NMS-CA-1) and operation of schools (for Monitoring Stations NMS-CA-2 and NMS-CA-3).

(b)      Impact monitoring at monitoring station NMS-CA-1A commenced on 19 September 2018 in view of the close vicinity of the construction works near the residential area at Century Link.

(c)      Due to land handover issue, NMS-CA-1A was relocated to Ying Hong Road which is located 60m away from the original location.  Proposal on the relocation of NMS-CA-1A was approved by IEC on 23 November 2018.  Noise monitoring at the relocated location commenced since 24 November 2018.

2.2.2                                 Monitoring Schedule for the Reporting Month

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

2.2.3                                 Results and Observations

Results for noise monitoring are summarized in Table 2.6.  The monitoring data and the graphical presentation are provided in Annex F3.

Table 2.6         Summary of Construction Noise Monitoring Results in the Reporting Period

Monitoring Station

Average, dB(A),

Leq (30mins)

Range, dB(A),

Leq (30mins)

Limit Level, dB(A),

Leq (30mins)

NMS-CA-1A

66.3

63.2-69.4

75

NMS-CA-4

68.2

66.5-70.8

75

Major noise sources during the noise monitoring included noise from plant operation, craning, piling, haul road traffic, nearby traffic and aircraft as well as nearby construction sites. 

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

2.3                                       Water Quality Monitoring

2.3.1                                 Monitoring Requirements and Equipment

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

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

The Action and Limit Levels of the water quality monitoring are provided in Table 2.7.

Table 2.7         Action and Limit Levels for Water Quality

Parameters

Action Level

Limit Level

DO in mg/L

(Surface, Middle & Bottom)

Surface and Middle

5.9 mg/L [1]

 

Bottom

5.6 mg/L

Surface and Middle

4 mg/L [1]

 

Bottom

2 mg/L

 

SS in mg/L (Depth-averaged)

13.5 mg/L
or
120% of upstream control station at the same tide of the same day, whichever is higher. [2]

 

 

23.5 mg/L
or
130% of upstream control station at the same tide of the same day, whichever is higher. [2]

Turbidity in NTU (Depth-averaged)

17.1 NTU
or
120% of upstream control station at the same tide of the same day, whichever is higher. [2]

23.5 NTU
or
130% of upstream control station at the same tide of the same day, whichever is higher. [2]

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

The locations of the monitoring stations under the Project are shown in Figure 2.3 and Table 2.8.

Table 2.8         Locations of Impact Water Quality Monitoring Stations and the Corresponding Monitoring Requirements

Monitoring Station

Description

Coordinates

Parameters (a)

Frequency

Monitoring Dates

Depth

 

 

Easting

Northing

 

 

 

TCE-WQM1

Near Airport Channel

811838

817341

Ÿ Dissolved Oxygen (DO) (mg/L and % saturation)

Ÿ Temperature (°C)

Ÿ Turbidity (NTU)

Ÿ Salinity (ppt)

Ÿ pH

Ÿ Water depth (m)

Ÿ Suspended Solid (SS) (mg/L)

Impact monitoring: 3 days per week, at mid-flood and mid-ebb tides during the construction period of the Project

 

1, 3, 6, 8, 10, 13, 15, 17, 20, 22, 24, 27, 29 and 31 March 2023

3 water depths: 1m below sea surface, mid-depth and 1m

above seabed.  If the water depth is less than 3m, mid-depth sampling only.  If water depth less than 6m, mid-depth may be omitted

TCE-WQM2a

Marine Park 1

814439

819879

TCE-WQM2b

Marine Park 2

814439

821905

TCE-WQM3A

Outlet of Tai Ho Wan

814705

817859

TCE-WQM4

HKBCF

813344

818849

TCE-C1

Control Station - Outside Airport Channel

804247

815620

TCE-C2

Control Station - Sunny Bay

819460

821473

 

Notes:

 

(a)     In addition to the abovementioned parameters, other relevant data shall also be recorded, including monitoring location / position, time, water depth, tidal stages, weather conditions and any special phenomena or work underway at the construction site.

Table 2.9 summarizes the equipment used in the impact water quality monitoring works.  Copies of the calibration certificates are attached in Annex G1.

Table 2.9         Water Quality Monitoring Equipment

Equipment

Model

Water Sampler

Kahlsico Water Samplers

Multi-parameter Water Quality System (measurement of DO, Temperature, Turbidity, Salinity and pH)

YSI ProDSS (S/N: 15M100005, 16H104234, 17E100747 and 21G105356)

 

2.3.2                                 Monitoring Schedule for the Reporting Month

The schedule for water quality monitoring during the reporting period was provided in Annex G2

2.3.3                                 Results and Observations

A total of 14 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 Annex G3

Action level exceedance was recorded for water quality impact monitoring in the reporting period and the event and action plan (Annex G4) was undertaken.  Investigation on the action level exceedance was conducted and summarized in Table 2.10 below. 

Table 2.10       Details of Exceedances Recorded for Water Quality Monitoring

Date

Tide

Parameter

Station

Type

Justification

24 March 2023

MF

SS

TCE-WQM4

Action

(a) (b)

 

Remarks:

(a)

The exceedance was not considered as caused by the construction of the Project due to areas of reclamation related marine works undertaken under the Project were surrounded by silt curtain which were inspected daily by the Contractor and inspected periodically by ER.  The silt curtain nearby the water quality monitoring stations was observed to be in good condition/well-functioning.

(b)

The exceedance was not considered as caused by the construction of the Project due to no illegal discharge/sediment plume was observed nearby the water quality monitoring station during the sampling in mid-ebb/mid-flood tide.

Based on the investigation conducted for each of the monitoring day with exceedance, the exceedance of SS was not likely caused by the work activities related to the Project.  

Nevertheless, the Contractors were reminded to implement all relevant mitigation measures for the marine works, including regular checking of silt curtain integrity, provide periodic maintenance and maintain good site practice.  The ET will keep on checking monitoring data, plant, equipment and Contractor’s working methods. 

2.4                                       Compensation Woodland Monitoring

Compensation woodland planting under Contract 2 was completed on 30 September 2022.  Monitoring for compensation woodland will be carried out after the confirmation of the monitoring proposal.  Photographic record of the compensation woodland planting is provided in Annex H.

2.5                                       Preserved/Transplanted Plant Species of Conservation Importance Monitoring

Plant species of conservation importance, including three individuals of Aquilaria sinensis and 33 individuals of Gmelina chinensis, were identified within works areas for Contract 2.  All individuals of Aquilaria sinensis and 31 individuals of Gmelina chinensis were recommended being preserved in-situ while two individuals of Gmelina chinensis (RT-07 and RT-08) were recommended being transplanted to the receptor site in accordance with the Detailed Preservation and/or Translocation Plan for Plant Species of Conservation Importance approved under Condition 2.21 of EP-519/2016.  Initial tree survey was conducted in September 2021 under Contract No. NL/2020/02 before the commencement of construction works.  According to the initial tree survey conducted, the in-situ preserved plant species of conservation importance of which one individual of Aquilaria sinensis and six individuals of Gmelina chinensis were found missing.

2.5.1                                 Preserved Plant Species of Conservation Importance

Monthly monitoring of the in-situ preserved plant species of conservation importance by the Qualified Personnel (QP) appointed under Contract 2 was implemented in the reporting period.  Health condition was considered fair for the majority of the in-situ preserved plant species of conservation importance, of which two individuals of Gmelina chinensis could not be monitored as a result of unsafe access to the locations, as recorded during the monitoring carried out on 20 March 2023. 

Tree protection zones for the in-situ preserved plant species of conservation importance were demarcated.  No injuries and/or damages to the individuals of the in-situ preserved plant species of conservation importance were reported by the QP since the previous monitoring events.  Photographic record and tree schedule of the preserved plant species of conservation importance monitoring are provided in Annex I.

The ET will continue to monitor the implementation of monitoring of in-situ preserved plant species of conservation importance.

2.5.2                                 Transplanted Plant Species of Conservation Importance

Site visit to the receptor site for the transplanted plant species of conservation importance under Contract 2 was carried out on 20 January 2022 prior to the commencement of transplantation works for the transplanted plant species of conservation importance on 21 January 2022. 

The transplanted plant species of conservation importance were both certified as dead trees by the QP on 15 June 2022 as no living signs were observed.  Replacement planting of new trees of the same species, or other species to the satisfaction of the Project Manager, at the Contractors’ expense would be deemed necessary in accordance with the conditions under the approved Detailed Preservation and/or Translocation Plan for Plant Species of Conservation Importance.  Revised replacement planting proposal prepared by the QP was submitted to EPD.  No further comment from EPD for the proposal was received and related replacement planting will be proceeded according to the arrangements specified in the proposal.

2.6                                       Eco-shoreline Monitoring

Mangrove eco-shoreline and rocky eco-shoreline are under construction while the construction of vertical eco-shoreline has been substantially completed.  Photographic record is provided in Annex J.

No eco-shoreline monitoring was scheduled during the reporting period.  Monitoring shall be conducted for at least 3 years after the completion of reclamation works, twice in wet season and twice in dry season, in order to determine the effectiveness of the eco-shoreline in accordance with the Updated EM&A Manual.

2.7                                       Soft Shore Ecological Monitoring

2.7.1                                  Monitoring Requirements

According to the Updated EM&A Manual of the Project, impact soft shore ecological monitoring has to be conducted quarterly at each survey location at Tung Chung Bay (TCB) and Tai Ho Wan (THW) covering wet and dry seasons during the marine construction of the Project.  The soft shore ecological monitoring consisted of qualitative walk-through surveys, quantitative transect surveys and sedimentation rate monitoring at the accessible survey locations of TCB and THW.

For qualitative walk-through surveys, the accessible shoreline of TCB and THW at each of the three shore heights: 2 m, 1.5 m and 1 m above Chart Datum was surveyed, and organisms encountered were recorded and their relative abundance noted.  In particular, active search of horseshoe crabs and seagrasses were conducted to confirm whether these species are present along the sites. 

For quantitative transect survey, one 50 – 100 m horizontal (belt) transect (actual length subject to the site conditions) was surveyed at each of the three shore heights: 2 m, 1.5 m and 1 m above Chart Datum of each survey location.  On each transect, five quadrats (50 cm x 50 cm) were placed randomly in each transect to assess the abundance and distribution of flora and fauna.  For each quadrat, surface layer to 5 cm depth was sieved and microbenthic organisms (e.g. crustaceans) were recorded and identified.  Density of organisms was expressed as individuals / m2.  Areas with seagrass were also recorded and identified and other information, such as the percentage cover, were also recorded.  Sessile animals such as barnacles and oysters in each quadrat were not counted but estimated as percentage cover on the rock surface.  All species of algae (encrusting, foliose and filamentous) were also identified and recorded by estimating the percentage cover on the rock surface.  All organisms were identified to the lowest possible taxonomic level (at least Genus level).  Species encountered outside the quadrat but in the vicinity of survey transect were also recorded.

For sedimentation rate monitoring, to avoid disturbance to the mudflat and nuisance to navigation, no fixed marker/monitoring rod was installed at the monitoring stations.  A high precision Global Navigation Satellite System (GNSS) real time location fixing system was used to locate the station in the precision of 1 mm, which is reasonable under flat mudflat topography with uneven mudflat surface only at micro level.   

Measurements were taken directly on the mudflat surface.  The Real Time Kinematic GNSS (RTK GNSS) surveying technology was used to measure mudflat surface levels and 3D coordinates of a survey point.  The RTK GNSS survey was calibrated against a reference station in the field before and after each survey.  The reference station is a survey control point established by the Lands Department of the HKSAR Government using professional surveying instruments such as total station, level and geodetic global navigation satellite system.  The coordinates system is in HK1980 GRID system.  The reference station was surveyed and established by traditional land surveying methods using professional surveying instruments such as total station, level and geodetic GNSS.  The accuracy was down to mm level and higher than the proposed RTK GNSS cm level so that the reference control station has relatively higher accuracy.  As the reference control station has higher accuracy, it was set as true evaluation relative to the RTK GNSS measurement.  All position and height correction were adjusted and corrected to the reference control station.

The precision of the measured mudflat surface level reading (vertical precision setting) was within 10 mm (standard deviation) after averaging the valid survey records of the XYZ HK1980 GRID coordinates.  Each survey record at each station was computed by averaging at least three measurements that are within the above specified precision setting.  Both digital data logging and written records were collected in the field.  Field data on station fixing and mudflat surface measurement were recorded.  

2.7.2                                  Monitoring Schedule for the Reporting Month

The schedule for soft shore ecological monitoring during the reporting period is provided in Annex K1

2.7.3                                  Results and Observations

Impact soft shore ecological monitoring was conducted at three (3) monitoring locations at Tung Chung Bay (TCB), situated in the eastern side (TCB1), southern side (TCB2) and western side (TCB3) as well as one (1) monitoring location at Tai Ho Wan (THW) as shown in Figure 2.4 during the reporting period.  Representative photographs taken during the impact monitoring are presented in Figure 2.5.

For qualitative walk-through surveys, horseshoe crabs and intertidal soft shore communities were recorded during the impact monitoring.  The survey results for each monitoring location are summarized in Table 2.11 below and detailed in Annex K2.

Table 2.11       Summary of Qualitative Walk-through Surveys

Location

 

Horseshoe Crabs

Seagrass

No. of Other Intertidal Species

Date and Time (1)

No. of Species

No. of Individuals

No. of Species

Area Coverage (m2)

TCB2

 

10/03/2023
14:00-18:00

-

-

-

-

35

TCB1

 

21/03/2023
13:00-16:00

-

-

-

-

34

THW

23/03/2023
14:00-18:00

1

6

-

-

37

TCB3

 

24/03/2023
14:30-18:30

1

3

1

94

 

40

Note:  

(1)            Quantitative and qualitative transect surveys were conducted on 10 March 2023 at TCB2, 21 March 2023 at TCB1, 23 March 2023 at THW and 24 March 2023 at TCB3.

For the quantitative transect surveys, a total of 4,977 individuals were recorded from all transects at monitoring stations TCB1, TCB2, TCB3 and THW.  The most abundant group of intertidal soft shore communities recorded was gastropods, with a total of 4,811 individuals (relative abundance of 96.7% and density of 320.7 individual m-2).  The summary of the top three dominant species at each shore height of each monitoring station and the complete list of species and density recorded are presented in Annex K2.  When compared with the results obtained during the baseline monitoring as presented in the Baseline Monitoring Report ([5]), there was no indication of a change in the composition of intertidal communities recorded during the reporting period.

The mudflat surface levels at the four selected monitoring stations in March 2023 and the corresponding XYZ HK1980 GRID coordinates are presented in Table 2.12.  When compared with the results obtained during the baseline monitoring as presented in the Baseline Monitoring Report (1), slight changes with <0.04 mPD of sediment levels are recorded for the monitoring stations.  The ET will continue to observe the trend of change in sediment levels over time for further comparison and review. 

Table 2.12       Results of Sedimentation Rate Monitoring

Monitoring Station

Northing (m)

Easting (m)

Z level at March 2023 (mPD)

Remarks

TCB1

816068.677

811129.293

1.288

Soft mudflat

TCB2

815812.756

810917.398

1.117

Soft mudflat

TCB3

816027.367

810696.222

1.076

Soft mudflat

THW

817472.076

815850.327

1.020

Soft mudflat

Based on the impact monitoring results, there was no evidence showing any significant difference in intertidal communities when compared against the data obtained during baseline monitoring.  No action is thus required to be undertaken in accordance with the Event and Action Plan presented in Annex K3.  The ET will continue to observe the change in density or the distribution pattern of horseshoe crab, seagrass and intertidal soft shore communities taking into account natural fluctuation in respect of the occurrence and distribution pattern.

2.8                                       EM&A Site Inspection

Site inspections were carried out on a weekly basis with the Contractor and ER to monitor the implementation of proper environmental pollution control and mitigation measures for air quality, noise, water quality, waste management, marine ecology, landscape and visual impacts and preservation and/or transplantation of plant species of conservation importance under the Project.  In the reporting period, five (5) site inspections were carried out on 2, 9, 16, 23 and 30 March 2023 for Contract 1, five (5) site inspections were carried out on 1, 8, 15 and 22 and 29 March 2023 for Contract 2, five (5) site inspections were carried out on 3, 10, 17, 22 and 31 March 2023 for Contract 3 and four (4) site inspections were carried out on 7, 14, 21 and 28 March 2023 for Contract 7.

Key observations during the site inspections are summarized in Table 2.13.

Table 2.13      Key Observations Identified during the Site Inspection in this Reporting Month

Contract No.

Inspection Date

Environmental Observations

Recommendations/ Remarks

Contract 1

2 March 2023

Area E

Ÿ   No deficiency was observed.

Ÿ   Nil

9 March 2023

VS3

Ÿ   Appropriate Non-road Mobile Machinery (NRMM) label was not observed on generator.

VS3

Ÿ   The Contractor was reminded to affix appropriate NRMM labels in accordance with the Air Pollution Control (Non-road Mobile Machinery) (Emission) Regulation.

16 March 2023

Area E

Ÿ  Accumulated refuse was observed on ground.

 

 

Interim Open Rectangular Channel (IORC)

Ÿ  Dusty haul road was observed.

Area E

Ÿ  The Contractor was reminded to remove the refuse in a timely manner and maintain good housekeeping.

Interim Open Rectangular Channel (IORC)

Ÿ  The Contractor was reminded to provide dust mitigation measures, such as watering.

23 March 2023

Area E

Ÿ  Accumulated refuse was observed on ground.

Area E

Ÿ  The Contractor was reminded to remove the refuse in a timely manner and maintain good housekeeping.

30 March 2023

Area E

Ÿ  No deficiency was observed.

Ÿ  Nil

Contract 2

1 March 2023

Portion 3

Ÿ   No record was observed on the wastewater treatment system checklist.

Ÿ   Concrete spill was observed on haul road.

Area 132

Ÿ   Stockpile of dusty materials was observed not covered.

 

 

 

Ÿ  Accumulated general refuse was observed.

Portion 3

Ÿ   The Contractor was urged to display proper record on the checklist.

Ÿ   The Contractor was urged to keep the public road clean.

Area 132

Ÿ   The Contractor was urged to provide mitigation measures, such as covering the stockpile of dusty materials with impervious sheeting.

Ÿ  The Contractor was reminded to remove the refuse in a timely manner and maintain good housekeeping.

8 March 2023

Portion 3

Ÿ   No record was observed on the wastewater treatment system checklist.

Ÿ   Discoloured Non-road Mobile Machinery (NRMM) label was observed on generator.

 

Portion 3

Ÿ   The Contractor was urged to display proper record on the checklist.

Ÿ   The Contractor was reminded to affix appropriate NRMM labels in accordance with the Air Pollution Control (Non-road Mobile Machinery) (Emission) Regulation.

15 March 2023

TTA

Ÿ   Discoloured Non-road Mobile Machinery (NRMM) label was observed on generator.

 

 

 

Portion 3

Ÿ   Accumulated general refuse was observed.

 

 

Ÿ   Construction materials were observed placing near to the retained trees and no tree protection was observed.

TTA

Ÿ   The Contractor was reminded to affix appropriate NRMM labels in accordance with the Air Pollution Control (Non-road Mobile Machinery) (Emission) Regulation.

Portion 3

Ÿ   The Contractor was reminded to remove the general refuse in a timely manner and maintain good housekeeping.

Ÿ   The Contractor was reminded to remove the materials and provide tree protection for retained trees.

22 March 2023

Portion 3

Ÿ   Damage was observed on retained tree.

 

 

Ÿ   Chemical containers were observed not placing on drip tray.

Ÿ   Mud trail was observed on haul road.

Portion 3

Ÿ   The Contractor was urged to critically investigate the cause and provide proper tree protection.

Ÿ   The Contractor was urged to place the chemicals on drip tray.

Ÿ   The Contractor was urged to keep the public road clean.

29 March 2023

Portion 3

Ÿ   Chemical container was observed not placing on drip tray.

Ÿ   Mud trail was observed on haul road.

Portion 3

Ÿ   The Contractor was urged to place the chemical on drip tray.

Ÿ   The Contractor was urged to keep the public road clean.

Contract 3

3 March 2023

Portion 104

Ÿ   Chemical containers were observed not placing on drip trays.

Portion 104

Ÿ   The Contractor was reminded to place chemical on drip trays.

10 March 2023

Road L3

Ÿ   Stockpile of dusty materials was observed not covered.

 

 

 

Main haul road

Ÿ   Dust was observed generated from haul road.

Road L3

Ÿ   The Contractor was urged to provide mitigation measures, such as covering the stockpile of dusty materials with impervious sheeting.

Main haul road

Ÿ   The Contractor was reminded to carry out dust mitigation measures, such as watering.

17 March 2023

TTA, Portion 16B, 104

Ÿ   No deficiency was observed.

Ÿ   Nil

22 March 2023

TTA, Portion 11, 104

Ÿ   No deficiency was observed.

Ÿ   Nil

31 March 2023

TTA, Portion 16B, 104

Ÿ   No deficiency was observed.

Ÿ   Nil

Contract 7

7 March 2023

Portion 146

Ÿ   Chemical containers were observed not placing on drip tray.

Portion 146

Ÿ   The Contractor was reminded to place the chemical containers on drip tray.

14 March 2023

Portion 146

Ÿ   Discoloured Non-road Mobile Machinery (NRMM) label was observed on generator.

Portion 146

Ÿ   The Contractor was reminded to affix appropriate NRMM label in accordance with the Air Pollution Control (Non-road Mobile Machinery) (Emission) Regulation.

21 March 2023

Portion 32

Ÿ   No tree protection was observed for retained tree.

Portion 32

Ÿ   The Contractor was reminded to provide tree protection to retained tree.

28 March 2023

Portion 32, 36, 146

Ÿ   No deficiency was observed.

Ÿ   Nil

The Contractors have rectified all of the observations identified during environmental site inspections in the reporting period.  The Contractors were reminded to implement all relevant mitigation measures related to construction dust, construction noise, water quality and waste management outlined in the EIA Report and Updated EM&A Manual. 

 

2.9                                       Waste Management Status

The Contractors of Contract 1, 2, 3 and 7 have registered as chemical waste producer.  Sufficient numbers of receptacles were available for general refuse collection and sorting.

All dump trucks engaged on site was equipped with RTTM system during the reporting period.  The Surveillance Team of the ET conducted regular site inspection 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 2.14

Table 2.14       Quantities of Different Waste Generated and Imported Fill Materials

Contract No.

Month/

Year

Inert C&D Materials (a)  (m3)

Imported Fill (b) (sand) (m3)

Imported Fill (c) (public fill) (m3)

Inert Construction Waste Re-used (d)

(m3)

Non-inert Construction Waste (e) (m3)

Recyclable Materials (f) (kg)

Chemical Wastes (kg)

 

 

TCNTE (East)

1 to 31 Jan 23

6,231.1

0.0

686.0

6,908.9

237.3

0.0

0.0

1 to 28 Feb 23

0.0

0.0

0.0

2,246.0

150.7

0.0

0.0

 

1 to 31 Mar 23

0.0

0.0

0.0

1,193.0

164.9

0.0

0.0

Notes:

 

 

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

(b) Imported materials include of sand fill from any source outside of TCNTE.

(c) Imported sorted public fill include all G200, G400 and glass gullet (local recycling materials) from any source outside of TCNTE.

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

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

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

2.10                                   Landscape and Visual Monitoring

Implementation of applicable landscape and visual mitigation measures was monitored in accordance with the Updated EM&A 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 summarized below in Table 2.15.  Examples of landscape and visual mitigation measures are presented in Annex L1.  The monitoring programme for detailed design, construction and establishment stages is presented in Table 2.16.  Event and Action Plan for Landscape and Visual impacts is stated in Annex L2.

Table 2.15       Implementation Status of Landscape and Visual Mitigation Measures

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.

NA

 

MM2 –  Minimize Topographical Changes

Implementation of the measures were carried out during the detailed design stage of the Project.

NA

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 Contractors submitted Detailed Preservation and/or Translocation Plan for Plant Species of Conservation Importance under EP condition 2.21.

 

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 Contractors submitted Detailed Preservation and/or Translocation Plan for Plant Species of Conservation Importance under EP condition 2.21.

 

The transplanted plant species of conservation importance were both certified as dead trees by the QP on 15 June 2022 as no living signs were observed.

Contract 2

MM5 – Screen Hoarding

 

The implementation of mitigation measures was checked by ET during weekly site inspection.  Implementation of the measures by Contractors was observed.

All works contracts

MM6 – Adopting Non-dredge Method for the Reclamation

Not applicable during the reporting period.

NA

MM9 – Providing Natural Rock Material/ Planting for Artificial Seawall

Rock armour reused and construction of eco-shoreline (mangrove eco-shoreline, rocky eco-shoreline and vertical eco-shoreline) in progress.  The implementation of mitigation measures was checked by ET during weekly site inspection.  Implementation of the measures by Contractors was observed.

Contract 1

MM10 – Compensatory Planting

Not applicable during the reporting period.

NA

MM11 – Woodland Restoration

The implementation of mitigation measures was checked by ET during weekly site inspection.  Implementation of the measures by Contractors was observed.

Contract 2

MM12 – Screen Planting

Not applicable during the reporting period.

NA

MM13 – Roadside Planting

Not applicable during the reporting period.

NA

MM14 – Aesthetic Design of Built Development

Not applicable during the reporting period.

NA

MM15 – Maximise Greening on Structures

Not applicable during the reporting period.

NA

MM16 – Noise Barrier Design

Not applicable during the reporting period.

NA

MM18 – Landscaping on Slopes

Not applicable during the reporting period.

NA

MM20 – Lighting Control

The implementation of mitigation measures was checked by ET during weekly site inspection.  Implementation of the measures by Contractors was observed.

All works contracts

 
Table 2.16       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.

Approval by Project Proponent

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

 

2.11                                   Implementation Status of Environmental Mitigation Measures

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

2.12                                   Summary of Exceedances of the Environmental Quality Performance Limit

The monitoring results for air quality monitoring (1-hour TSP), construction noise monitoring and water quality impact monitoring complied with the Action/ Limit levels in the reporting period.  

Cumulative statistics on exceedances is provided in Annex M.

2.13                                   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 Contract 1 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 summarized below.

 

Complaint(s)

Investigation/Follow up action(s)

1

 

Environmental complaint related to Contract 1 regarding dust was referred by EPD on 20 March 2023.

Based on the information provided by the Contractor with confirmation by RSS, sufficient implemented mitigation measures were provided, such as regular watering of haul roads and site areas, deploying green net to cover stockpile/surcharge and limiting traffic speed within site.  With reference to data from weekly air quality monitoring, no project related exceedance was recorded.

Statistics on complaints, notifications of summons, successful prosecutions are summarised in Annex M.

3                                            Future Key Issues

3.1                                       Construction Programme for the Coming Month

Works to be undertaken in the next monitoring period of April 2023 are summarized in Table 3.1 below, together with the key issues and the key mitigation measures:

Table 3.1         Major Activities for the Next Reporting Period

Activities

Key Issues

Key Mitigation Measures

Contract No. NL/2017/03 - Tung Chung New Town Extension – Reclamation and Advance Works (Contract 1)

Land-based Works

 

 

·         Ground investigation works

·         Placing of sorted public fill

·         Box culvert construction

·         Mangrove planting

 

 

·         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

·         Good site practices

·         Regular water spraying on stockpiles, unpaved haul road and land filling area

·         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