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 30 June 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 13 sessions

Preserved Plant Species Monitoring 1 session

Transplanted Plant Species Monitoring 1 session

Soft Shore Ecological Monitoring 1 session

Environmental Site Inspection

- Contract 1 5 sessions

- Contract 2 4 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 Limit Levels was recorded for construction noise monitoring in the reporting period. However, one (1) Action Level was triggered from 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

Dissolved Oxygen (DO) exceedances were recorded during the reporting period. Relevant investigations and follow-up actions were conducted according to the EM&A programme. The exceedances were considered not related to this Project after investigation.

Eco-shoreline Monitoring

The construction of vertical eco-shoreline, mangrove eco-shoreline and rocky 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.

Two (2) environmental complaints related to Contract 3 were received in the reporting period. Investigations were conducted for the environmental complaints 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 July 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 traffic, 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

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 30 June 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
Environmental Team (ET) (ERM-Hong Kong, Limited)	Deputy ET Leader	Raymond Chow	3894 9509

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
Civil Engineering and Development Department	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	Frankie Fan Chris Cheung Chris Chow	3894 9603 3894 9604 3894 9651
	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
Civil Engineering and Development Department	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	Peter Ho	9457 0120
	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	Winston Wong	3894 9650
	Resident Engineer	David Li	3894 9684
	Resident Engineer	Alvis Li	3894 9558
	Resident Engineer	Anson Yip	3894 9559
	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 · Construction of rockscape and paving block	· 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
· Placing of rock armour for seawall construction	· Potential surface runoff · 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 · 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, deflector wall and rigid barrier at Portion 3

· CLP cable duct laying works at Wong Lung Hang at Portion 3

· Watermain laying works at Portion 3 along Yu Tung Road, Chung Yan Road, Man Tung Road and inside WSD facilities

· Pipe jacking works at Portion 3

· Road widening at Yi Tung Road at Portion 4

· Pipe laying for drainage works at Portion 5A

· 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, L5 and Portion 16

· 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

· Road D4, Road L7, CUT 4 ELS installation

· 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 146-8

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

· Trench excavation and pipe laying works at Portion 32 (Access Road adjacent to MTRC Siu Ho Wan Depot)

· Trench excavation at Portion 33

· WSD Subway DN1200 installation at Portion 35 and trench excavation at 36

· ELS and RC for construction of retaining walls FR1

· RC works for Pak Mong Subway Extension Phase 1

· Piling works for Pak Mong Channel Bridge

· Pre-drill works for Bridge A1 & A2 and Bridge C

· Temporary working platform at abutment A1b

· RC works for RW-R3 at Portion 146-2

· Pipe piles works at RW-R7

· Mini-piles at Wall E

· 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 preserved plant species, monitoring conducted once per month; for transplanted plant species, replacement planting was carried out on 28 April 2023 and monitoring conducted once per month for the first year
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, 2, 3 and 7

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:

Ÿ 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 15, 28, 14 and 6 June 2023, respectively;

Ÿ Environmental toolbox trainings on use of spill kits, operation and maintenance, waste management and disposal, dark smoke, mosquito control, dust suppression, nuisance to residence (light pollution/ sudden noise/ dusty work), site hygiene (rubbish, mosquito, rodent control) and suspension of work (silt curtain/ dolphin/ pollution) on 2, 7, 9, 14, 16, 21, 23, 28 and 30 June 2023 were conducted for Contract 1;

Ÿ Environmental toolbox trainings on maintenance of site access, site boundary and haul roads and waste collection, handling and disposal on 8 and 15 June 2023 were conducted for Contract 2;

Ÿ Environmental toolbox trainings on backfilling, deposition and compaction of fill material, scaffolding, site tidiness for anti-mosquitos, percussive piling, bored piling, chemical waste and handling of chemical spillage, steel works and concreting on 1, 6, 8, 13, 15, 20, 27 and 29 June 2023 were conducted for Contract 3;

Ÿ Environmental toolbox trainings on percussive piling, mini piling, steel works and concreting on 7, 14, 21 and 28 June 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	6, 12, 17, 23, and 29 June 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).

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

6, 12, 17, 23, and 29 June 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	31	24-47	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 L_eq ≥ 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). L_eq, L₁₀and L₉₀would be recorded.	Once per week for 30 mins during the construction period of the Project	6, 12, 17, 23, and 29 June 2023	Sound Level Meter: Rion NL-52 (S/N: 00175561) 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), L_eq_(30mins)	Range, dB(A), L_eq_(30mins)	Limit Level, dB(A), L_eq_(30mins)
NMS-CA-1A	66.4	64.8-69.7	75
NMS-CA-4	67.1	65.0-68.7	75

Monitoring Station

Average, dB(A),

L_eq_(30mins)

Range, dB(A),

L_eq_(30mins)

Limit Level, dB(A),

L_eq_(30mins)

NMS-CA-1A

66.4

64.8-69.7

NMS-CA-4

67.1

65.0-68.7

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 Limit Level exceedance was recorded for construction noise monitoring in the reporting period. However, one (1) Action Level was triggered from one (1) environmental complaints related to noise nuisance in the reporting period. Investigation was conducted for the complaint in accordance with the Event and Action Plan (Annex F4) and the details are provided in Section 2.13.

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	Parameters ^(a)
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	2, 5, 7, 9, 12, 14, 16, 19, 21, 23, 26, 28 and 30 June 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: 16H104233, 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 13 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 exceedances were recorded for water quality impact monitoring in the reporting period and the event and action plan (Annex G4) was undertaken. Investigations on the action level exceedances were 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
2 June 2023	ME	DO (S&M)	TCE-WQM1	Action	(a) (b)
	ME	DO (S&M)	TCE-WQM2a	Action
	ME	DO (S&M)	TCE-WQM2b	Action
	ME	DO (S&M)	TCE-WQM3A	Action
	ME	DO (B)	TCE-WQM1	Action
	ME	DO (B)	TCE-WQM2a	Action
	MF	DO (S&M)	TCE-WQM1	Action
	MF	DO (S&M)	TCE-WQM2a	Action	(c)
	MF	DO (S&M)	TCE-WQM3A	Action	(a) (b)
	MF	DO (B)	TCE-WQM1	Action	(c)
5 June 2023	ME	DO (S&M)	TCE-WQM1	Action	(a) (b)
	ME	DO (S&M)	TCE-WQM2a	Action
	ME	DO (S&M)	TCE-WQM2b	Action
	ME	DO (S&M)	TCE-WQM3A	Action
	ME	DO (S&M)	TCE-WQM4	Action
	ME	DO (B)	TCE-WQM1	Action
	ME	DO (B)	TCE-WQM2a	Action
	ME	DO (B)	TCE-WQM2b	Action
	ME	DO (B)	TCE-WQM3A	Action
	ME	DO (B)	TCE-WQM4	Action
	MF	DO (S&M)	TCE-WQM1	Action
	MF	DO (S&M)	TCE-WQM2a	Action
	MF	DO (S&M)	TCE-WQM2b	Action
	MF	DO (S&M)	TCE-WQM3A	Action
	MF	DO (S&M)	TCE-WQM4	Action
	MF	DO (B)	TCE-WQM1	Action
	MF	DO (B)	TCE-WQM2a	Action
	MF	DO (B)	TCE-WQM2b	Action
	MF	DO (B)	TCE-WQM3A	Action
	MF	DO (B)	TCE-WQM4	Action
7 June 2023	ME	DO (S&M)	TCE-WQM1	Action	(a) (b)
	ME	DO (S&M)	TCE-WQM2a	Action
	ME	DO (S&M)	TCE-WQM2b	Action
	ME	DO (S&M)	TCE-WQM3A	Action
	ME	DO (S&M)	TCE-WQM4	Action
	ME	DO (B)	TCE-WQM1	Action
	ME	DO (B)	TCE-WQM2a	Action
	ME	DO (B)	TCE-WQM2b	Action
	ME	DO (B)	TCE-WQM3A	Action
	ME	DO (B)	TCE-WQM4	Action
	MF	DO (S&M)	TCE-WQM1	Action
	MF	DO (S&M)	TCE-WQM2a	Action
	MF	DO (S&M)	TCE-WQM2b	Action
	MF	DO (S&M)	TCE-WQM3A	Action
	MF	DO (S&M)	TCE-WQM4	Action
	MF	DO (B)	TCE-WQM2a	Action
	MF	DO (B)	TCE-WQM2b	Action
9 June 2023	ME	DO (S&M)	TCE-WQM1	Action	(a) (b)
	ME	DO (S&M)	TCE-WQM2a	Action
	ME	DO (S&M)	TCE-WQM2b	Action
	ME	DO (S&M)	TCE-WQM3A	Action
	ME	DO (S&M)	TCE-WQM4	Action
	ME	DO (B)	TCE-WQM1	Action
	ME	DO (B)	TCE-WQM2a	Action
	ME	DO (B)	TCE-WQM2b	Action
	ME	DO (B)	TCE-WQM4	Action
	MF	DO (S&M)	TCE-WQM1	Action
	MF	DO (S&M)	TCE-WQM2a	Action
	MF	DO (S&M)	TCE-WQM2b	Action
	MF	DO (S&M)	TCE-WQM3A	Action
	MF	DO (S&M)	TCE-WQM4	Action
	MF	DO (B)	TCE-WQM1	Action
	MF	DO (B)	TCE-WQM2a	Action
	MF	DO (B)	TCE-WQM2b	Action
	MF	DO (B)	TCE-WQM4	Action
12 June 2023	ME	DO (B)	TCE-WQM2a	Action	(a) (b)
	MF	DO (B)	TCE-WQM1	Action
	MF	DO (B)	TCE-WQM2a	Action
14 June 2023	ME	DO (S&M)	TCE-WQM3A	Action	(c)
	ME	DO (B)	TCE-WQM3A	Action	(b) (c)
	MF	DO (B)	TCE-WQM2b	Action	(a) (b)
	MF	DO (B)	TCE-WQM3A	Action	(b) (c)
16 June 2023	ME	DO (S&M)	TCE-WQM1	Action	(a) (b)
	ME	DO (S&M)	TCE-WQM2a	Action
	ME	DO (S&M)	TCE-WQM2b	Action
	ME	DO (S&M)	TCE-WQM3A	Action
	ME	DO (S&M)	TCE-WQM4	Action
	ME	DO (B)	TCE-WQM1	Action
	ME	DO (B)	TCE-WQM2a	Action
	ME	DO (B)	TCE-WQM2b	Action
	ME	DO (B)	TCE-WQM3A	Action
	ME	DO (B)	TCE-WQM4	Action
	MF	DO (S&M)	TCE-WQM1	Action
	MF	DO (S&M)	TCE-WQM2a	Action
	MF	DO (S&M)	TCE-WQM2b	Action
	MF	DO (S&M)	TCE-WQM3A	Action
	MF	DO (S&M)	TCE-WQM4	Action
	MF	DO (B)	TCE-WQM1	Action
	MF	DO (B)	TCE-WQM2a	Action
	MF	DO (B)	TCE-WQM2b	Action
	MF	DO (B)	TCE-WQM3A	Action
	MF	DO (B)	TCE-WQM4	Action
19 June 2023	ME	DO (S&M)	TCE-WQM1	Action	(a) (b)
	ME	DO (S&M)	TCE-WQM2a	Action
	ME	DO (S&M)	TCE-WQM2b	Action
	ME	DO (S&M)	TCE-WQM3A	Action
	ME	DO (S&M)	TCE-WQM4	Action
	ME	DO (B)	TCE-WQM1	Action
	ME	DO (B)	TCE-WQM2a	Action	(b) (c)
	ME	DO (B)	TCE-WQM2b	Action	(a) (b)
	ME	DO (B)	TCE-WQM3A	Action
	ME	DO (B)	TCE-WQM4	Action
	MF	DO (S&M)	TCE-WQM1	Action
	MF	DO (S&M)	TCE-WQM2a	Action
	MF	DO (S&M)	TCE-WQM2b	Action
	MF	DO (S&M)	TCE-WQM3A	Action
	MF	DO (S&M)	TCE-WQM4	Action
	MF	DO (B)	TCE-WQM1	Action
	MF	DO (B)	TCE-WQM2a	Action
	MF	DO (B)	TCE-WQM2b	Action
	MF	DO (B)	TCE-WQM3A	Action
	MF	DO (B)	TCE-WQM4	Action
21 June 2023	ME	DO (S&M)	TCE-WQM1	Action	(a) (b)
	ME	DO (S&M)	TCE-WQM2a	Action
	ME	DO (S&M)	TCE-WQM3A	Action
	ME	DO (B)	TCE-WQM1	Action
	ME	DO (B)	TCE-WQM2a	Action
	ME	DO (B)	TCE-WQM3A	Action
	ME	DO (B)	TCE-WQM4	Action
	MF	DO (S&M)	TCE-WQM1	Action
	MF	DO (S&M)	TCE-WQM2a	Action
	MF	DO (S&M)	TCE-WQM2b	Action
	MF	DO (S&M)	TCE-WQM3A	Action
	MF	DO (S&M)	TCE-WQM4	Action
	MF	DO (B)	TCE-WQM2a	Action
	MF	DO (B)	TCE-WQM2b	Action
	MF	DO (B)	TCE-WQM3A	Action
23 June 2023	ME	DO (S&M)	TCE-WQM3A	Action	(a)
	ME	DO (B)	TCE-WQM2a	Action	(b) (c)
	MF	DO (S&M)	TCE-WQM2b	Action	(a) (b)
	MF	DO (B)	TCE-WQM2a	Action
	MF	DO (B)	TCE-WQM2b	Action
26 June 2023	ME	DO (S&M)	TCE-WQM2a	Action	(c)
	ME	DO (B)	TCE-WQM1	Action	(a) (b)
	ME	DO (B)	TCE-WQM2a	Action
	MF	DO (B)	TCE-WQM2a	Action
	MF	DO (B)	TCE-WQM2b	Action
28 June 2023	ME	DO (B)	TCE-WQM1	Action	(c)
	ME	DO (B)	TCE-WQM2b	Action	(a) (b)
	ME	DO (B)	TCE-WQM4	Action
	MF	DO (B)	TCE-WQM1	Action
	MF	DO (B)	TCE-WQM2a	Action
	MF	DO (B)	TCE-WQM2b	Action
30 June 2023	ME	DO (B)	TCE-WQM1	Action	(a) (b)
	ME	DO (B)	TCE-WQM2b	Action
	ME	DO (B)	TCE-WQM4	Action
	MF	DO (B)	TCE-WQM3A	Action
	MF	DO (B)	TCE-WQM4	Action

Remarks:
(a)	The exceedance was not considered as caused by the construction of the Project due to the monitoring result was similar to the corresponding upstream/control station(s).
(b)	The exceedance was not considered as caused by the construction of the Project due to the corresponding upstream/control station(s) already exceeded the Action Level during the same tide.
(c)	The exceedance was not considered as caused by the construction of the Project due to no marine construction activity under the Project was conducted near the water quality monitoring station.

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

In addition, low levels of DO were recorded during previous three summer periods. This further suggested that exceedances of DO are likely caused by seasonal fluctuation and a similar trend of lower levels of DO would likely occur again during this summer period.

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 16 June 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 I1.

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. Replacement planting of three (3) Aquilaria sinensis were completed on 28 April 2023.

Monitoring of the replacement planting of Aquilaria sinensis was carried out on 28 June 2023. Two (2) individuals of the replacement planting trees were in fair health condition while one (1) individual was in poor health condition with no signs of blooming. Photographic record of Aquilaria sinensis monitoring are provided in Annex I2.

The transplanted plant species of conservation importance were watered twice a week to keep the soil moist except in days with heavy rainfall. The ET will continue to monitor the implementation of monitoring of in-situ preserved/ transplanted plant species of conservation importance.

2.6 Eco-shoreline Monitoring

The construction of vertical eco-shoreline, mangrove eco-shoreline and rocky 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 eco-shoreline, 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 and Eco-shoreline Implementation Plan.

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
Location	Date and Time ⁽¹⁾	No. of Species	No. of Individuals	No. of Species	Area Coverage (m²)	No. of Other Intertidal Species
TCB3	05/06/2023 14:30-18:00	1	11	1	160.0	43
TCB2	19/06/2023 14:00-17:30	1	4	1	1.5	28
THW	20/06/2023 14:00-17:30	1	12	-	-	32
TCB1	30/06/2023 12:30-16:00	1	3	-	-	39

Note:

(1) Quantitative and qualitative transect surveys were conducted on 5 June 2023 at TCB3, 19 June 2023 at TCB2, 20 June 2023 at THW and 30 June 2023 at TCB1.

For the quantitative transect surveys, a total of 4,092 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 3,886 individuals (relative abundance of 95.0% and density of 259.1 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 June 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 <0.07 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 June 2023 (mPD)	Remarks
TCB1	816068.727	811129.214	1.277	Soft mudflat
TCB2	815812.732	810917.265	1.053	Soft mudflat
TCB3	816027.424	810696.160	1.053	Soft mudflat
THW	817470.935	815849.924	1.079	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 1, 8, 15, 23 and 29 June 2023 for Contract 1, four (4) site inspections were carried out on 7, 14, 21 and 28 June 2023 for Contract 2, five (5) site inspections were carried out on 2, 9, 14, 23 and 30 June 2023 for Contract 3 and four (4) site inspections were carried out on 6, 13, 20, and 27 June 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	1, 8, and 15 June 2023	Area E Ÿ No deficiency was observed.	Ÿ Nil
	23 June 2023	WA3 Ÿ Accumulated waste was observed.	WA3 Ÿ The Contractor was reminded to remove the waste in a timely manner.
	29 June 2023	Area E Ÿ No deficiency was observed.	Ÿ Nil
Contract 2	7 June 2023	Portion 3 Ÿ Suspected spillage as oil stain was observed in the u-channel and the drainage system.	Portion 3 Ÿ Contractor was urged to provide rectification immediately and identify the source of the potential spillage.
	14 June 2023	Portion 3 Ÿ Improper water diversion was observed. Ÿ Muddy stain was observed in u-channel.	Portion 3 Ÿ Contractor was urged to rectify immediately and ensure all divert comply with the approved discharge license and WPCO. Ÿ Contractor was reminded to review the efficiency of the wastewater treatment system.
	21 June 2023	TTA Ÿ The breaker hammer was observed on the ground directly.	TTA Ÿ The Contractor was reminded to wrap and store the breaker hammer properly to avoid any oil leak.
	28 June 2023	Portion 3 Ÿ Appropriate Non- Road Mobile Machinery (NRMM) label was not observed on excavator.	Portion 3 Ÿ The Contractor was reminded to affix appropriate NRMM label in accordance with the Air Pollution Control (Non- Road Mobile Machinery) (Emission) Regulation.
Contract 3	2 June 2023	TTA, Portion 16B Ÿ No deficiency was observed.	Ÿ Nil
	9 June 2023	TTA, Portion 104 Ÿ Discolored Non- Road Mobile Machinery (NRMM) labels were observed on generator and crawler crane.	TTA, Portion 104 Ÿ The Contractor was reminded to affix appropriate NRMM labels in accordance with the Air Pollution Control (Non- Road Mobile Machinery) (Emission) Regulation.
	14 June 2023	TTA Ÿ No deficiency was observed.	Ÿ Nil
	23 June 2023	TTA Ÿ Appropriate Non- Road Mobile Machinery (NRMM) labels were not observed on generator and excavator.	TTA Ÿ The Contractor was reminded to affix appropriate NRMM labels in accordance with the Air Pollution Control (Non- Road Mobile Machinery) (Emission) Regulation.
	30 June 2023	TTA, Portion 16B, 104 Ÿ No deficiency was observed.	Ÿ Nil
Contract 7	6 June 2023	Portion 36 Ÿ Accumulated waste was observed.	Portion 36 Ÿ The Contractor was reminded to remove the waste in a timely manner and maintain good housekeeping.
	13 June 2023	Portion 146 Ÿ Appropriate Non-Road Mobile Machinery (NRMM) label was not observed on generator.	Portion 146 Ÿ The Contractor was reminded to affix appropriate NRMM labels in accordance with the Air Pollution Control (Non- Road Mobile Machinery) (Emission) Regulation.
	20 June 2023	Portion 31 Ÿ Stockpile was observed not covered. Portion 146 Ÿ Oil drum was observed not placing on drip tray.	Portion 31 Ÿ The Contractor was reminded to cover the stockpile properly with impervious sheeting. Portion 146 Ÿ The Contractor was reminded to place the oil drum on drip tray to prevent spillage.
	27 June 2023	Portion 32, 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 30 Apr 23	0.0		0.0		0.0	0.0			186.5	261.0			1,710.0
	1 to 31 May 23	0.0		0.0		1,025.6	1,570.0			221.0	0.0			0.0
	1 to 30 Jun 23		0.0	0.0	0.0			203.4	278.1			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) complied with the Action/ Limit levels in the reporting period. No Limit Level exceedance was recorded for construction noise monitoring in the reporting period. However, one (1) Action Level was triggered from one (1) environmental complaint related to noise nuisance received in the reporting period.

Action level exceedances were recorded for water quality impact monitoring in the reporting period. The investigations on the action level exceedances were conducted and the result was summarized in Section 2.3.3. 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.

	Complaint(s)	Investigation/Follow up action(s)
1	Environmental complaint related to Contract 3 regarding dust was referred by CEDD on 2 June 2023.	Based on the information provided by the Contractor with confirmation by RSS and ET’s regular inspection, water trucks were deployed for regular watering of works area and haul roads. Nevertheless, the Contractor provided toolbox training regarding dust mitigation measures to frontline staff, such as controlling the height of unloading materials to a minimum practical height in order to reduce fugitive dust generation.
2	Environmental complaint related to Contract 3 regarding noise was referred by EPD on 14 June 2023.	Based on the information provided by the Contractor with confirmation by RSS, no construction work at the concerned area was conducted on 14 June 2023 under the Project. Nevertheless, the Contractor provided morning briefing regarding noise control to frontline workers and foremen to raise the awareness of the potential noise nuisance to the nearby resident.

Complaint(s)

Investigation/Follow up action(s)

Environmental complaint related to Contract 3 regarding dust was referred by CEDD on 2 June 2023.

Based on the information provided by the Contractor with confirmation by RSS and ET’s regular inspection, water trucks were deployed for regular watering of works area and haul roads. Nevertheless, the Contractor provided toolbox training regarding dust mitigation measures to frontline staff, such as controlling the height of unloading materials to a minimum practical height in order to reduce fugitive dust generation.

Environmental complaint related to Contract 3 regarding noise was referred by EPD on 14 June 2023.

Based on the information provided by the Contractor with confirmation by RSS, no construction work at the concerned area was conducted on 14 June 2023 under the Project. Nevertheless, the Contractor provided morning briefing regarding noise control to frontline workers and foremen to raise the awareness of the potential noise nuisance to the nearby resident.

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

3 Future Key Issues

3.1 Construction Programme for the Coming Month

Works to be undertaken in the next monitoring period of July 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
· Placing of sorted public fill · Box culvert construction · Construction of rockscape and paving block · Construction of eco-pot	· 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
· Placing of rock armour for seawall construction · Placing of oyster basket	· Potential surface runoff · 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 · 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, deflector wall and rigid barrier at Portion 3

· CLP cable duct laying works at Wong Lung Hang at Portion 3

· Watermain laying works at Portion 3 along Yu Tung Road, Chung Yan Road, Man Tung Road and inside WSD facilities

· Pipe jacking works at Portion 3

· Road widening at Yi Tung Road at Portion 4

· Pipe laying for drainage works at Portion 5A

· 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, 4 and supporting building

· Construction works for CUT no. 1 structure

· Back-filling works for CUT 2

· 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, L5 and Portion 16

· 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

· Pipe jacking works at Yi Tung Road

· Foundation works for noise barrier at Portion 11

· Road widening works at Ying Hei Road

· Road D4, Road L7, ELS installation

· 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/2020/07 - 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 146-11

· Trench excavation, pipe piles and pipe laying works at Portions 32 (Sham Shui Kok Drive), Portion 34 Phase 2, and Portions 38

· Trench excavation and pipe laying works at Portion 32 (Access Road adjacent to MTRC Siu Ho Wan Depot)

· Trench excavation at Portion 33

· WSD Subway DN1200 installation at Portion 35 and backfilling at Portion 36

· RC for construction of retaining walls FR1

· RC works for Pak Mong Subway Extension Phase 1

· Piling works for Pak Mong Channel Bridge west abutment; Excavation of pile cap at East Abutment

· Pre-drill works for Bridge A1 & A2 and Bridge C

· Temporary working platform at abutment A1b

· RC works for RW-R3 and ELS for RW-RW4 at Portion 146-2

· Pipe piles works at RW-R7

· Mini-piles at Wall E

· 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 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.

3.2 Monitoring Schedule for the Coming Month

The tentative schedules for environmental monitoring in July 2023 are provided in Annex N.

4 Conclusion and Recommendation

This EM&A Report presents the findings of the EM&A activities undertaken for the TCE Project during the period from 1 to 30 June 2023 in accordance with the Updated EM&A Manual and the requirements of the Environmental Permit (EP-519/2016).

Air quality (1-hour TSP), noise, water quality (DO, turbidity and SS), in-situ preserved plant species of conservation importance, transplanted plant species of conservation importance and soft shore ecological monitoring were carried out in the reporting period.

The monitoring results for air quality monitoring (1-hour TSP) complied with the Action/Limit levels in the reporting period.

No Project-related Action/ Limit level exceedances were recorded for water quality after investigation.

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

Based on the monitoring results for soft shore ecological monitoring, there was no evidence showing any significant change 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.

Monitoring of the in-situ preserved plant species of conservation importance and monitoring of the transplanted plant species of conservation importance were carried out in the reporting period.

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.

There were no notification of summons or prosecution recorded in the reporting period. Two (2) environmental complaints related to Contract 3 were received in the reporting period. Investigations were conducted for the environmental complaints in accordance with the complaint handling process as stated in the Complaint Management Plan.

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

([1]) ERM (2018a). Updated Environmental Monitoring and Audit Manual for Tung Chung New Town Extension. Deposited to EPD under EP-519/2016

([2]) Arup (2015). Environmental Impact Assessment Report for Tung Chung New Town Extension. Deposited to EPD under Register No. AEIAR-196/2016

([3]) 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.

([4]) 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.

([5]) ERM (2018b). Baseline Monitoring Report for Tung Chung New Town Extension (East). Submitted to EPD under EP-519/2016