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                   Soft Shore Ecological Monitoring                             

2.5                   EM&A Site Inspection                                                           

2.6                   Waste Management Status                                              

2.7                   Implementation Status of Environmental Mitigation Measures   

2.8                   Summary of Exceedances of the Environmental Quality Performance Limit                                                                                             

2.9                   Summary of Complaints, Notification of Summons and Successful Prosecutions                                                                          

3                      Future Key Issues                                                                 

3.1                   Construction Programme for the Coming Month

3.2                   Key Issues for the Coming Month                                 

3.3                   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 Statutory Environmental Requirements

Annex D       Air Quality
Annex D1    
Calibration Certificates
Annex D2    
Monitoring Schedule
Annex D3    
Monitoring Results
Annex D4    
Event and Action Plan

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

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

Annex G       Soft Shore Ecology
Annex G1    
Monitoring Schedule
Annex G2    
Monitoring Results
Annex G3    
Event and Action Plan

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

Annex I    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

RAP

Remediation Action Plan

RR

Remediation Report

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 (ížthe ProjectíĘ) 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 Project commenced on 9 July 2018.

This is the Monthly EM&A report presenting the EM&A works carried out during the period from 1 to 30 September 2018 for the Project in accordance with the Updated EM&A Manual.  As informed by the Contractor, major activities in the reporting period are summarised in Table 1 below, together with the key issues and the key mitigation measures:

Table 1           Major Activities in the Reporting Period

Activities

Key Issues

Key Mitigation Measures

Land-based Works

 

 

íP         Demolition of site office near Century Link and Man Tung Road

íP         Removal of rock armour above +2.5mPD

íP         Preparation works for diversion of existing box culvert

íP         Dust emission

íP         Waste management for C&D Materials

íP         Noise from barge and plant operation during normal working hours and restricted hours

íP         Good site practices

íP         Regular water spraying on stockpiles

íP         Sorting and reuse of C&D materials as far as practicable

 

 

 

Marine-based Works

 

 

íP         Installation of pipe piles and sheet piles for ground investigation and wave protection measures

íP         Removal of rock armour below +2.5mPD

íP         Marine ground investigation works

íP         Laying of geotextile and sand blanket for reclamation works and Deep Cement Mixing (DCM) trial embankment

íP         Marine filling works

íP         Diversion of existing box culvert

íP         Elevation in SS due to sediment loss from sand blanket laying and marine filling works

íP         Disturbance to Chinese White Dolphin

íP         Provision of perimeter silt curtain for the Project

íP         Implementation of Dolphin Watching for the marine-based works

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

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

Air Quality Monitoring                                    6 sessions

Noise Monitoring                                            6 sessions

Water Quality Monitoring                               13 sessions

Soft Shore Ecological Monitoring                 1 session

Environmental Site Inspection                       4 sessions

Environmental Management Meeting           1 session

Environmental auditing works, including weekly site inspections of construction works conducted by the ET, audit of works vessels and audit of implementation of Dolphin Watching 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.

Snapshots of EM&A Activities in the Reporting Period

P9077778

P9208334

Soft Shore Ecological Monitoring conducted by ET

Inspection of Silt Curtain after Adverse Weather

P9208259

Water Quality Monitoring conducted by ET

Noise Monitoring conducted by ET

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, Action Level was triggered from one (1) environmental complaint related to noise nuisance received on 11 September 2018 during the reporting period.  Investigation was conducted for this noise nuisance in accordance with the Event and Action Plan and the complaint handling process as stated in the Complaint Management Plan.  Based on the noise monitoring events conducted in the reporting period, there was no exceedance of limit levels.  Nevertheless, the Contractor was reminded to reduce construction noise levels, as far as practicable, especially when working next to the residential areas around the Project.

Breaches of Action and Limit Levels for Water Quality

The water quality monitoring results obtained during the reporting period generally complied with the corresponding Action and Limit Levels stipulated in the Baseline Monitoring Report.  Relevant investigation and follow-up actions were conducted according to the EM&A programme when the water quality in terms of Dissolved Oxygen (DO), Turbidity and Suspended Solids (SS) exceeded the corresponding Action and Limit Levels.  The preliminary investigation findings suggested that the exceedances were not related to the Project.

Soft Shore Ecological Monitoring

The impact monitoring conducted during the reporting period showed that there was no evidence showing 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 the occurrence and distribution pattern such as due to seasonal change. 

Environmental Complaints, Non-compliance & Summons

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

Three (3) environmental complaints were received in the reporting period.  Investigations were conducted for each of the environmental complaints in accordance with the complaint handling process as stated in the Complaint Management Plan.  Environmental complaints in the reporting period are summarized in Table 2.

Table 2  Summary of Environmental Complaints

 

Complaint(s)

Investigation/Follow up action(s)

1

One environmental complaint related to noise nuisances at works area near Ying Tung Estate on 11 September 2018.

Based on the information provided by the ER and the Contractor, supplemented the regular/ad-hoc noise monitoring conducted around the Project area, there was no exceedance of noise limit levels and non-compliance was not observed.  Nevertheless, the Contractor was reminded to reduce construction noise levels, as far as practicable, especially when working next to the residential areas around the Project.  No construction works in the evenings / restricted hours would be allowed without a valid Construction Noise Permit.  The ET will continue to check the implementation status of the mitigation measures and conduct noise monitoring as per EM&A requirements.

 

2

Two environmental complaints related to waste management for the demolition of site offices near Century Link and Man Tung Road were received on 12 and 26 September 2018.

Based on the information provided by the ER and the Contractor, supplemented the regular/ad-hoc site inspections conducted around the Project area, it was observed that the Contractor had fulfilled the requirements as stated in the Waste Management Plan to maintain temporary stockpiles and implemented trip-ticket system to ensure Construction and Demolition (C&D) materials were disposed properly.  The Contractor also followed the waste management hierarchy as stated in the Waste Management Plan in handling the waste generated from the site clearance work for the site offices.  Relevant waste materials from the site offices were reused, recovered and recycled where applicable.  Nevertheless, the Contractor was reminded to implement all relevant mitigation measures of waste management implications and follow the requirements as stated in the approved Waste Management Plan.  The ET will continue to check the construction works and the implementation status of the mitigation measures.

 

Reporting Change

There was no reporting change in the reporting period.

Upcoming Works for the Next Reporting Period

Works to be undertaken in the next monitoring period of October 2018 are summarized in Table 3 below, together with the key issues and the key mitigation measures:

 

Table 3  Major Activities for the Next Reporting Period

Activities

Key Issues

Key Mitigation Measures

Land-based Works

 

 

íP         Erection of chain link fence at Area 58

íP         Removal of rock armour above +2.5mPD

íP         Preparation works for diversion of existing box culvert

íP         Dust emission

íP         Waste management for C&D Materials

íP         Noise from barge and plant operation during normal working hours and restricted hours

íP         Good site practices

íP         Regular water spraying on stockpiles

íP         Sorting and reuse of C&D materials as far as practicable

 

 

 

Marine-based Works

 

 

íP         Installation of pipe piles and sheet piles for ground investigation and wave protection measures

íP         Removal of rock armour below +2.5mPD

íP         Installation of silt curtain near Tai Ho Wan

íP         Laying of geotextile and sand blanket and ground improvement works for reclamation works and Deep Cement Mixing (DCM) trial embankment

íP         Marine filling works

íP         Diversion of existing box culvert

íP         Marine ground investigation works

íP         Elevation in SS due to sediment loss from sand blanket laying and marine filling works

íP         Disturbance to Chinese White Dolphin

íP         Provision of perimeter silt curtain for the Project

íP         Implementation of Dolphin Watching for the marine-based works

íP         Provision of a leading seawall of at least 200m before marine filling 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 Contractor about the environmental toolbox topics on the abovementioned key issues for the next reporting period.


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 (ížthe ProjectíĘ) 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 TCE Project (ížthe ProjectíĘ) comprises the following elements:

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 kilometres of seawalls, with an eco-shoreline, three drainage box culvert outfalls, three circulation drains and a seawater intake at TCE;

3.       Construction of a 470-metre (m) long multi-cell drainage box culvert at TCE;

4.       Provision of infrastructure for Tung Chung Area 58, including construction of a single two-lane road with a footpath of about 270 m in length and the associated utility works;

5.       Construction of roads, footbridges, drainage, sewerage, waterworks, sewage and salt water pumping stations, fresh water and salt water service reservoirs, and flood protection measures;

6.       Provision of new cycle tracks connecting to the existing cycle track network;

7.       Landscaping, reprovisioning and ancillary works; and

8.       Implementation of environmental mitigation measures and environmental monitoring and audit works.

The location of the Project, including the associated infrastructure works, is shown in Figure 1.1.  The construction and the reclamation related marine works of the Project commenced on 9 and 13 July 2018, respectively. 

1.2                                   Scope of the EM&A Report

This is the Monthly EM&A Report for the Project which summarises the key findings of the EM&A programme during the reporting period from 1 to 30  September 2018 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

Civil Engineering and Development Department

 

Senior Engineer

Eddie Lam

2231 4445

Engineer

 

Colin Wong

2231 4417

EngineeríŽs Representative

(ER)

(AECOM Asia Company Limited)

 

Principal Resident Engineer

Frankie Fan

9325 0903

Senior Resident Engineer

Robo Lo

6622 1130

Resident Engineer

Vincent Leung

9800 0448

Senior Inspector of Works

 

C K Liu

9433 6255

Environmental Team (ET) (ERM-Hong Kong, Limited)

 

ET Leader

Jovy Tam

2271 3113

Deputy ET Leader

Raymond Chow

2271 3114

Independent Environmental Checker (IEC)

(Black & Veatch Hong Kong Limited)

 

 

 

IEC

Manuel Chua

2608 7314

Deputy IEC

 

Ivan Ting

9222 9490

Contractor (Contract No. NL/2017/03 TCNTE íV Reclamation and Advance Works)

(Build King íV SCT Joint Venture)

 

Site Agent

Keith Tse

9383 6173

Construction Team Leader

Lee Wai Man

9481 6024

Environmental Officer

Calvin Sze

9205 9277

24-hour Complaint Hotline

 

-

9862 2910

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:

Land-based Works:

Ÿ   Demolition of site office near Century Link and Man Tung Road;

Ÿ   Removal of rock armour above +2.5mPD; and

Ÿ   Preparation works for diversion of existing box culvert.

Marine-based Works:

Ÿ   Installation of pipe piles and sheet piles for ground investigation and wave protection measures;

Ÿ   Removal of rock armour below +2.5mPD;

Ÿ   Marine ground investigation works;

Ÿ   Laying of geotextile and sand blanket for reclamation works and Deep Cement Mixing (DCM) trial embankment;

Ÿ   Marine filling works; and

Ÿ   Diversion of existing box culvert.

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 1.2.  The EM&A requirements remained unchanged during the reporting period.


 

Table 1.2        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

 

 

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)

Pending environmental site investigation and lab testing works for TCW

 

 

Ecology

Monitoring for Compensation Woodland

 

To be conducted when compensation woodland are planted

Monitoring for Emergent Plant inside the future River Park

 

To be conducted in the future River Park

Monitoring for Translocated Amphibians of Conservation Importance

 

To be conducted after translocation

Monitoring for Preserved/Transplanted Plant Species of Conservation Importance

 

To be conducted after preservation/ transplantation

Monitoring for Tung Chung Stream EIS and Wong Lung Hang EIS

 

To be conducted under TCW

Eco-shoreline Monitoring

To be conducted when eco-shoreline at TCE PDA and Road P1 is built

 

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

 

 

Site Environmental Audit

Regular Site Inspection

 

On-going

Dolphin Watching Plan implementation measures

 

Under implementation by the Contractor

Works Vessel Travel Route Plan implementation measures

 

Under implementation by the Contractor

Silt Curtain Deployment Plan implementation measures

Under implementation by the Contractor

 

 

Spill Response Plan implementation measures

Under implementation by the Contractor

 

 

Waste Management Plan implementation measures

Under implementation by the Contractor

 

 

Complaint Hotline and Email Channel

 

Under implementation by the Contractor

Environmental Log Book

On-going

Taking into account the construction works, impact monitoring of air quality, noise, water quality and waste management were carried out in the reporting period.  The monitoring schedule of air quality, noise, water quality monitoring and soft shore ecological monitoring are provided in Annex D2, Annex E2, Annex F2 and Annex G1, 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 Dolphin Watching Plan, Works Vessel Travel Route Plan, Silt Curtain Deployment Plan, Spill Response 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   One (1) environmental management meeting was held with the Contractor, ER, ET, IEC and CEDD on 26 September 2018; and

Ÿ   Environmental toolbox trainings on noise control measure, dust control measure and handling of chemicals provided by the Contractor for the workers on 5, 12 and 19 September 2018.

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 Table 1.3

Table 1.3        Status of Submissions and Implementation Status of Mitigation Measures under EP

EP Condition

Submission / Implementation Status

Status

2.1

Set up of Community and Professional Liaison Groups

Community and Professional Liaison Groups were set up.

2.1

Complaint Management Plan

Accepted by EPD

2.5

Employment of Qualified Ecologist(s)

Qualified Ecologists have been employed to carry out work relating to ecological aspects.

2.6

Employment of Surveillance Team

Surveillance Team has been employed to conduct regular site inspection.

2.11

Management Organizations

Accepted by EPD

2.12

Construction Works Schedule and Location Plans

Accepted by EPD

2.13

Works Vessel Travel Route Plan

Accepted by EPD

2.14

Eco-shoreline Implementation Plan

To be prepared no later than 3 months before the commencement of construction of the eco-shoreline at TCE

2.15

Dolphin Watching Plan

Accepted by EPD

2.16

Silt Curtain Deployment Plan

Accepted by EPD

2.17

Spill Response Plan

Accepted by EPD

2.18

Plan on Provision of Buffer Zones

To be prepared no later than 3 months before the commencement of construction works at Tung Chung Valley

2.19

River Park Plan

To be prepared no later than 3 months before the commencement of construction works at Tung Chung Valley

2.20

Habitat Enhancement and Translocation Plan for Amphibian Species of Conservation Importance

To be prepared no later than 3 months before the commencement of construction works at Tung Chung Valley

2.21

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

To be prepared no later than 3 months before the commencement of construction works at Tung Chung Valley

2.22

Detailed Compensatory Woodland Planting Plan

To be prepared no later than 3 months before the commencement of construction works at Tung Chung Valley

2.23

Plan for Review of Use of New Low Noise Road Surfacing Material(s)

To be prepared no later than 3 months before the commencement of roadworks

2.24

Waste Management Plan

Accepted by EPD

2.25

(i) no dredging of marine sediment shall be carried out for the Project

(ii) all reclamation filling works shall be carried out within a leading seawall of at least 200m; and

(iii) silt curtains surrounding the reclamation area shall be deployed in accordance with the Silt Curtain Deployment Plan

Under implementation

Under implementation

 

Under implementation

 

2.26

Implement Silt Curtain Deployment Plan and Spill Response Plan

Under implementation

 

2.27

Implement dolphin exclusion zone of 250m around the reclamation site at Tung Chung East during the installation of the perimeter silt curtains and any re-deployment of the perimeter silt curtains by Qualified Ecologist(s)

Under implementation

 

2.28

Once the perimeter silt curtains are installed or re-deployed, the Dolphin Watching Plan shall be implemented as part of the EM&A programme

Under implementation

 

2.29

(i) no underwater blasting and percussive piling shall be carried out for the Project; and

(ii) air compressors and other noisy equipment mounted on works vessels shall be acoustically-decoupled

Under implementation

 

Under implementation

 

2.30

Implement Works Vessel Travel Route Plan

Implement Eco-shoreline Implementation Plan

Implement Dolphin Watching Plan

Under implementation

To be implemented

Under implementation

2.31

Implement Plan on Provision of Buffer Zones, River Park Plan, Habitat Enhancement and Translocation Plan for Amphibian Species of Conservation Importance, Detailed Preservation and/or Translocation Plan for Plant Species of Conservation Importance and Detailed Compensatory Woodland Planting Plan

To be implemented

2.32

Implement Plan for review of the use of new road surfacing material(s)
Implement Waste Management Plan

To be implemented

Under implementation

2.33

Install noise barriers and low noise road surfacing at the extended Chung Mun Road and Road D3

All noise mitigation measures implemented shall be properly maintained during the operation of the above roads

To be implemented

 

2.34

Implement a deodouriser with an odour removal efficiency of at least 95% shall be installed, operated and maintained within each sewage pumping station.  The exhaust of the deodouriser shall be oriented away from sensitive receivers; and all odourous facilities of each sewage pumping station shall be enclosed and negative pressure shall be maintained within the facilities.

To be implemented

 

2.35

Enclose all the pumps inside a building structure

To be implemented

 

2.36

(i) a 100% standby pumping capacity shall be installed and maintained

(ii) a 50% spare pumping capacity shall be installed and maintained

(iii)  dual-feed power supply shall be installed and maintained; and

(iv)  an emergency facility with a 6-hour storage capacity of average dry weather flow shall be installed and maintained.

To be implemented

To be implemented

To be implemented

To be implemented

 

 

1.7                                   Status of Other Statutory Environmental Requirements

The environmental licenses and permits, including environmental permit, waste discharge license, registration as chemical waste producer and construction noise permit, which are valid in the reporting period are presented in Annex C.  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 ([3]) 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 D1, 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 íV Ying Tung Estate

1-hour TSP

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

3, 7, 13, 19, 24 & 29 Sep 2018

1-hour TSP Dust Meter

SIBATA LD-5R (S/N: 620402)

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 D2.

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 D3.

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

36

22-89

279

500

The major dust sources in the reporting period included excavation, craning, sand blanket laying and material handling works under the Project as well as nearby traffic emissions.

All the 1-hour TSP results were below the Action and Limit Levels at the monitoring location in the reporting period.  No action is thus required to be undertaken in accordance with the Event and Action Plan presented in Annex D4.

2.2                                   Noise Monitoring

2.2.1                           Monitoring Requirements and Equipment

According to the Updated EM&A Manual ([4]) 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 ([5]) 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 E1

Table 2.5        Noise Monitoring Details

Monitoring Station (1)

Location

Parameter

Frequency and Duration

Monitoring Dates

Equipment

NMS-CA-1A (2)

Residential premise in Tung Chung East íV Century Link

 

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

19, 24 and 29 September 2018

Sound Level Meter: Rion NL-52 (S/N: 00331805)

 

Acoustic Calibrator: LARSON DAVIS CAL200 (S/N: 11333)

NMS-CA-4

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

 

3, 7, 13, 19, 24 and 29 September 2018

Remarks:

(1)    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).

(2)    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.

 

2.2.2                           Monitoring Schedule for the Reporting Month

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

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 E3.

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

71.2

68.9-72.1

75

NMS-CA-4

65.2

62.1-69.1

75

Major noise sources during the noise monitoring included noise from crane and breaker operation (for monitoring station NMS-CA-1A), welding, excavation works, armour rock removal, sheet piling and grab barge works, nearby traffic noise and aircraft noise and nearby concurrent project.  It should be noted that the temporary crane and breaker operation was conducted near the monitoring station NMS-CA-1A during the monitoring events and the monitoring results were observed to be higher when compared to those recorded for the monitoring station NMS-CA-4.  The ET will keep on checking whether noise mitigation measures are properly implemented for the works of the Project.

No noise Limit Level exceedance was recorded in the reporting period. However, Action Level was triggered from one (1) environmental complaint related to noise nuisance received on 11 September 2018 during the reporting period.  Investigation was conducted for the complaint in accordance with the Event and Action Plan (Annex E4) and the details are provided in Section 2.9.

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 (1)

Frequency

Depth

 

 

Easting

Northing

 

 

TCE-WQM1

Near Airport Channel

811838

817341

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

Ÿ Temperature (óXC)

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

 

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:
(1) 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 F1.

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) (Note 1)

YSI ProDSS (S/N: 16H104233; S/N: 16H104234; S/N: 17E100747; S/N: 17H105557)

YSI 6920 v2 (S/N: 0001C6A7; S/N: 00019CB2)

Note 1: Two of the multi-parameter water quality systems were used at each monitoring station during each survey day.

2.3.2                           Monitoring Schedule for the Reporting Month

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

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.  The monitoring event during mid-ebb tide on 15 September 2018 was cancelled due to the issue of Strong Wind Signal No.3 of Typhoon Mangkhut.  Impact water quality monitoring results and graphical presentations are provided in Annex F3

Action level and limit level exceedances were recorded for water quality impact monitoring in the reporting period and the event and action plan (Annex F4) was undertaken.  Investigations on the action and limit level exceedances were conducted and summarized in Table 2.10 below. 

Table 2.10      Details of Exceedances Recorded for Water Quality Monitoring

Group

Date

Tide

Parameter

Station

Type

Remarks

1

01 Sep 2018

ME

DO (S&M)

All stations

Action

The exceedances were not considered as caused by the construction of the Project due to the following reasons:

Ÿ   Areas of reclamation related marine works undertaken under the Project were surrounded by silt curtain, which was inspected daily by the Contractor and endorsed by ER and observed to be in good condition and functioning well, except minor defect was found for silt curtain on 18, 20 and 22 September 2018 after the approach of typhoon Mangkhut.  The defect was fixed on 23 September 2018 and inspected by the Contractor and endorsed by ER. 

Ÿ   DO levels at the monitoring stations were higher than or similar to those at corresponding control/upstream stations.

Ÿ   No marine works were undertaken on 15 and 25 September 2018.

Ÿ   During summer season, the marine water experienced temperature and salinity stratification, where layers of water build up with different levels of temperature and salinity which prevent mixing of water masses, leading to hypoxia (low oxygen levels) at the sea bottom.

 

 

ME

DO (B)

TCE-WQM1

Action

 

 

ME

DO (B)

TCE-WQM2a

Action

 

 

ME

DO (B)

TCE-WQM2b

Action

 

 

ME

DO (B)

TCE-WQM3A

Action

 

 

MF

DO

All stations

Action

 

04 Sep 2018

ME

DO

All stations

Action

 

 

MF

DO

All stations

Action

 

06 Sep 2018

ME

DO

All stations

Action

 

 

MF

DO (S&M)

TCE-WQM2b

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

 

08 Sep 2018

ME

DO

TCE-WQM1

Action

 

 

ME

DO

TCE-WQM2a

Action

 

 

ME

DO

TCE-WQM2b

Action

 

 

ME

DO (B)

TCE-WQM3A

Action

 

 

MF

DO (B)

TCE-WQM1

Action

 

 

MF

DO

TCE-WQM2a

Action

 

 

MF

DO

TCE-WQM2b

Action

 

 

MF

DO (B)

TCE-WQM3A

Action

 

 

MF

DO (S&M)

TCE-WQM4

Action

 

11 Sep 2018

ME

DO

All stations

Action

 

 

MF

DO (S&M)

TCE-WQM1

Action

 

 

MF

DO (S&M)

TCE-WQM2a

Action

 

 

MF

DO (S&M)

TCE-WQM2b

Limit

 

 

MF

DO (S&M)

TCE-WQM3A

Action

 

 

MF

DO (S&M)

TCE-WQM4

Action

 

 

MF

DO (B)

All stations

Action

 

13 Sep 2018

ME

DO

All stations

Action

 

 

MF

DO

All stations

Action

 

15 Sep 2018

MF

DO

All stations

Action

 

18 Sep 2018

ME

DO (S&M)

TCE-WQM3A

Action

 

20 Sep 2018

ME

DO

TCE-WQM1

Action

 

 

ME

DO (B)

TCE-WQM2a

Action

 

 

ME

DO (B)

TCE-WQM2b

Action

 

 

MF

DO (B)

TCE-WQM2b

Action

 

22 Sep 2018

ME

DO (B)

TCE-WQM1

Action

 

 

ME

DO (B)

TCE-WQM2a

Action

 

 

ME

DO (B)

TCE-WQM3A

Action

 

 

MF

DO

TCE-WQM2b

Action

 

 

MF

DO (B)

TCE-WQM1

Action

 

 

MF

DO (B)

TCE-WQM2a

Action

 

25 Sep 2018

ME

DO (B)

TCE-WQM1

Action

 

 

ME

DO

TCE-WQM2b

Action

 

 

ME

DO

TCE-WQM3A

Action

 

 

MF

DO (B)

TCE-WQM1

Action

 

 

MF

DO (B)

TCE-WQM2a

Action

 

 

MF

DO

TCE-WQM2b

Action

 

 

MF

DO

TCE-WQM3A

Action

 

27 Sep 2018

ME

DO

All stations

Action

 

 

MF

DO

All stations

Action

 

29 Sep 2018

ME

DO (S&M)

TCE-WQM1

Action

 

 

ME

DO

TCE-WQM2a

Action

 

 

ME

DO

TCE-WQM2b

Action

 

 

ME

DO

TCE-WQM4

Action

 

 

MF

DO

TCE-WQM1

Action

 

 

MF

DO

TCE-WQM2a

Action

 

 

MF

DO

TCE-WQM2b

Action

 

 

MF

DO (S&M)

TCE-WQM3A

Action

 

 

MF

DO

TCE-WQM4

Action

 

 

 

 

 

 

 

2

01 Sep 2018

ME

SS

TCE-WQM1

Action

The exceedances were not considered as caused by the construction of the Project due to the following reasons:

Ÿ   Areas of reclamation related marine works undertaken under the Project were surrounded by silt curtain, which was inspected daily by the Contractor and endorsed by ER and observed to be in good condition and functioning well.

Ÿ   Monitoring stations are located nearby the shore.  In view of the rainy weather, surface runoff from the nearby land mass to the sea might be resulted, thus increasing the levels of Suspended Solids of the water.

 

 

ME

SS

TCE-WQM3A

Action

 

 

 

 

 

 

 

3

08 Sep 2018

ME

SS

TCE-WQM2b

Action

The exceedances were not considered as caused by the construction of the Project due to the following reasons:

Ÿ   Areas of reclamation related marine works undertaken under the Project were surrounded by silt curtain, which was inspected daily by the Contractor and endorsed by ER and observed to be in good condition and functioning well.

Ÿ   The monitoring stations are located further away from the Project works area when compared with monitoring stations TCE-WQM3A and TCE-WQM4 where exceedances were not recorded.

 

 

 

MF

SS

TCE-WQM2b

Action

 

11 Sep 2018

ME

SS

TCE-WQM1

Action

 

 

MF

SS

TCE-WQM2b

Action

 

13 Sep 2018

ME

SS

TCE-WQM2a

Action

 

 

MF

SS

TCE-WQM2a

Action

 

 

MF

SS

TCE-WQM2b

Limit

 

29 Sep 2018

ME

SS

TCE-WQM1

Action

 

 

MF

SS

TCE-WQM2a

Action

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

27 Sep 2018

MF

SS

TCE-WQM3A

Action

The exceedances were not considered as caused by the construction of the Project due to the following reasons:

Ÿ   Areas of reclamation related marine works undertaken under the Project were surrounded by silt curtain, which was inspected daily by the Contractor and endorsed by ER and observed to be in good condition and functioning well.

Ÿ   Site observations confirmed no silt plumes or observable issues during marine works on 27 September 2018, including installation of pipe pile and sheet pile, sand filling and geotextile laying.

 

 

MF

Turbidity

TCE-WQM3A

Action

ME: Mid-ebb; MF: Mid-flood

DO(B): Bottom-depth DO; DO (S&M): Surface and middle-depth averaged DO

All Stations: TCE-WQM1, TCE-WQM2a, TCE-WQM2b, TCE-WQM3A and TCE-WQM4

Based on the preliminary investigation conducted for each of the monitoring day with potential action and limit level exceedances with the Contractor, the ER and the IEC, there is no evidence showing the exceedances were related to the Project.  Nevertheless, the Contractor was reminded to implement all relevant mitigation measures for the marine works, including regular checking of silt curtain integrity and maintain good site practice.  The ET will keep on checking monitoring data, plant, equipment and ContractoríŽs working methods.  The ET will also conduct further investigation, including the review of water quality monitoring data from adjacent projects, to substantiate the exceedances were not considered as caused by the construction of the Project.

2.4                                   Soft Shore Ecological Monitoring

2.4.1                           Monitoring Requirements

According to the Updated EM&A Manual ([6]) 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 íV 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 (or equivalent technology) 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 or traditional land surveying methods using professional surveying instruments such as total station, level and/or geodetic global navigation satellite system.  The coordinates system is in HK1980 GRID system.  The reference control station was surveyed and established by traditional land surveying methods using professional surveying instruments such as total station, level and/or 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. 

2.4.2                           Monitoring Schedule for the Reporting Month

The schedule for soft shore ecological monitoring during the reporting period is provided in Annex G1

2.4.3                           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 while seagrass beds were not observed during the impact monitoring.  The survey results for each monitoring location are summarized in Table 2.11 below and detailed in Annex G2.

Table 2.11      Summary of Qualitative Walk-through Surveys

Date and Time

Location

Horseshoe Crabs

Seagrass

No. of Other Intertidal Species

No. of Species

No. of Individuals

No. of Species

Area Coverage (m2)

5/9/2018

08:30-12:30

 

TCB2

1

3

0

0

40

7/9/2018

11:00-14:30

 

THW

2

6

0

0

43

10/9/2018

13:30-17:00

 

TCB3

2

19

0

0

44

11/9/2018

14:00-17:30

TCB1

2

10

0

0

45

 

For quantitative transect surveys, a total of 4,071 individuals were recorded from all transects at monitoring stations TCB1-3 and THW.  The most abundant group of intertidal soft shore communities recorded was gastropods, with a total of 3,842 individuals (relative abundance of 94.4% and density of 256 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 G2.  When compared with the results obtained during the baseline monitoring as presented in the Baseline Monitoring Report ([7]), higher number of intertidal species were recorded at each monitoring location, though the abundance / density of intertidal communities was observed to be lowered.  Nevertheless, there is no indication of change in composition of intertidal communities during the reporting period. 

The mudflat surface levels at the four selected monitoring stations in September 2018 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 ([8]), the sediment levels at each monitoring station generally increased.  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 Sep 2018 (mPD)

Remarks

TCB1

816068.626

811129.309

1.545

Soft mudflat

TCB2

815812.382

810917.245

1.322

Soft mudflat

TCB3

816027.632

810696.839

1.314

Soft mudflat

THW

817472.067

815850.407

1.380

Soft mudflat

The impact monitoring results showed that there was no evidence showing significant change 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 G3.  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 the occurrence and distribution pattern such as due to seasonal change. 

2.5                                   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 and landscape and visual impacts under the Project.  In the reporting period, four (4) site inspections were carried out on 6, 13, 20 and 26 September 2018.

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

Inspection Date

Environmental Observations

Recommendations/ Remarks

6 September 2018

 

 

Ground Investigation (GI) platform (Dong Ah 107)

Ÿ   Stagnant water in drip tray

GI platform (Dong Ah 105)

Ÿ   Stagnant water in drip tray

Ÿ   Chemicals without drip tray

GI platform (Kong Yeung 88)

Ÿ   Stagnant water in lower deck

GI platform (Dong Ah 107)

Ÿ   The contractor was reminded to clear stagnant water.

GI platform (Dong Ah 105)

Ÿ   The contractor was reminded to clear stagnant water; and

Ÿ   The contractor was reminded to place chemicals in drip tray.

GI platform (Kong Yeung 88)

Ÿ   The contractor was reminded to clear stagnant water.

 

13 September 2018

 

Works Area near Man Tung Road

Ÿ   Accumulated debris at site

Pak Mong Pier

Ÿ   Used chemicals at site

Works Area near Man Tung Road

Ÿ   The contractor was reminded to dispose of the accumulated debris.

Pak Mong Pier

Ÿ   The contractor was reminded to regularly remove used chemicals.

 

20 September 2018

 

Works Area near Ying Tung Estate

Ÿ   A water-filled barrier was found to trap stagnant water

Ÿ   Chemicals without drip tray

Ÿ   Accumulated debris at site

Ÿ   Suspended chemical leakage

Ÿ   Stagnant water in drip tray

Ÿ   Diesel drum without chemical labels

Works Area near Century Link

Ÿ   No noise barrier provided when working near residential areas

Works Area near Ying Tung Estate

Ÿ   The contractor was reminded to seal the opening of the barrier to avoid stagnant water;

Ÿ   The contractor was reminded to place chemicals in drip tray;

Ÿ   The contractor was reminded to remove accumulated debris;

Ÿ   The contractor was reminded to cover the ground by canvas and drill on the canvas to avoid soil contamination by chemicals;

Ÿ   The contractor was reminded to clear stagnant water in drip tray;

Ÿ   The contractor was reminded to provide labelling for chemicals.

Works Area near Century Link

Ÿ   The contractor was reminded to provide noise barrier when working near residential areas to reduce noise nuisance from construction works.

26 September 2018

 

Vessel (Tat Fat 11)

Ÿ   Diesel drum without chemical labels

Ÿ   Stagnant water in tyres

Vessel (Tat Fat 11)

Ÿ   The contractor was reminded to provide labelling for chemicals.

Ÿ   The contractor was reminded to clear stagnant water in the tyres.

 

The Contractor has rectified all of the observations identified during environmental site inspections in the reporting period.

2.6                                   Waste Management Status

The Contractor has registered as chemical waste producer under the Contract.  Sufficient numbers of receptacles were available for general refuse collection and sorting.

All dump trucks engaged on site was equipped with GPS during the reporting period.  The Surveillance Team of the ET conducted regular site inspection on the dump trucks and their track records.  Illegal dumping and landfilling of C&D materials were not recorded during the reporting period.

As informed by the Contractor, wastes generated during this reporting period include mainly imported fill, non-inert construction wastes and recyclable materials.  Reference has been made to the waste flow table prepared by the Contractor.  The quantities of different types of wastes are summarised in Table 2.14.  It should be noted that the Contractor voluntarily engaged in tree clearance works after the approach of the Typhoon Mangkhut in mid-September 2018 and hence more non-inert construction wastes were generated in the reporting period.

Table 2.14      Quantities of Different Waste Generated

Month/

Year

Inert C&D Materials (a) (m3)

Imported Fill (m3)

Inert Construction Waste Re-used

(m3)

Non-inert Construction Waste (b) (m3)

Recyclable Materials (c)  (kg)

Chemical Wastes (kg)

9 to 31 Jul 18

0

6,665 (d)

0

20.7

 

0

0

1 to 31 Aug 18

0

20,036

0

110.1

 

96,740

0

1 to 30 Sep 18

0

14,086

0

356.3

11,120

0

Notes:

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

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

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

(d) Updated figure is presented.

2.7                                   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.

2.8                                   Summary of Exceedances of the Environmental Quality Performance Limit

Results for air quality monitoring (1-hour TSP) complied with the Action/ Limit levels in the reporting period.  One (1) Action level exceedance for construction noise was recorded from one (1) environmental complaint related to noise nuisance.  No Project-related Action/ Limit level exceedances were recorded for water quality after preliminary investigation.  Results for the soft shore ecological monitoring did not indicate any change in composition of intertidal communities when compared to the baseline monitoring results.

Cumulative statistics on exceedances is provided in Annex H.

2.9                                   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 noise nuisances at works area near Ying Tung Estate on 11 September 2018 and two (2) environmental complaints related to waste management for the demolition of site offices near Century Link and Man Tung Road on 12 and 26 September 2018 were received during the reporting period.  Investigations were conducted for each of the environmental complaints in accordance with the complaint handling process as stated in the Complaint Management Plan. 

Based on the information provided by the ER and the Contractor, supplemented the regular/ad-hoc noise monitoring conducted around the Project area, there was no exceedance of noise limit levels and non-compliance was not observed.  Nevertheless, the Contractor was reminded to reduce construction noise levels, as far as practicable, especially when working next to the residential areas around the Project.  No construction works in the evenings / restricted hours would be allowed without a valid Construction Noise Permit.  The ET will continue to check the implementation status of the mitigation measures and conduct noise monitoring as per EM&A requirements.

Based on the information provided by the ER and the Contractor, supplemented the regular/ad-hoc site inspections conducted around the Project area, it was observed that the Contractor had fulfilled the requirements as stated in the Waste Management Plan to maintain temporary stockpiles and implemented trip-ticket system to ensure Construction and Demolition (C&D) materials were disposed properly.  The Contractor also followed the waste management hierarchy as stated in the Waste Management Plan in handling the waste generated from the site clearance work for the site offices.  Relevant waste materials from the site offices were reused, recovered and recycled where applicable.  Nevertheless, the Contractor was reminded to implement all relevant mitigation measures of waste management implications and follow the requirements as stated in the approved Waste Management Plan.  The ET will continue to check the construction works and the implementation status of the mitigation measures.

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

3                                          Future Key Issues

3.1                                   Construction Programme for the Coming Month

As informed by the Contractor, the major works for the Project in October 2018 will be:

Land-based Works:

Ÿ   Erection of chain link fence at Area 58;

Ÿ   Removal of rock armour above +2.5mPD; and

Ÿ   Preparation works for diversion of existing box culvert.

Marine-based Works:

Ÿ   Installation of pipe piles and sheet piles for ground investigation and wave protection measures;

Ÿ   Removal of rock armour below +2.5mPD;

Ÿ   Installation of silt curtain near Tai Ho Wan;

Ÿ   Laying of geotextile and sand blanket and ground improvement works for reclamation works and Deep Cement Mixing (DCM) trial embankment;

Ÿ   Marine filling works;

Ÿ   Diversion of existing box culvert; and

Ÿ   Marine ground investigation works.

3.2                                   Key Issues for the Coming Month

Potential environmental impacts arising from the above upcoming construction activities in the next reporting period of October 2018 are mainly associated with noise from barge and plant operation during normal working hours and restricted hours, elevation in SS due to sediment loss from sand blanket laying and marine filling works, disturbance to Chinese White Dolphin (CWD) during marine works, and waste management for C&D materials.  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.

3.3                                   Monitoring Schedule for the Coming Month

The tentative schedules for environmental monitoring in October 2018 are provided in Annex I.

4                                          Conclusion and Recommendation

This EM&A Report presents the findings of the EM&A activities undertaken during the period from 1 to 30 September 2018 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) and soft shore ecological monitoring were carried out in the reporting period. 

Results for 1-hour TSP complied with the Action and Limit levels in the reporting period.  One (1) Action level exceedance for construction noise was recorded from one (1) environmental complaint related to noise nuisance in the reporting period.  No Project-related Action/ Limit level exceedances were recorded for water quality after preliminary investigation.  Results for the soft shore ecological monitoring did not indicate any change in composition of intertidal communities when compared to the baseline monitoring results.

Environmental site inspections were carried out during the reporting period.  Recommendations on remedial actions were given to the Contractor for the deficiencies identified during the site inspections.

There was no notification of summons or prosecution recorded in the reporting period.  One (1) environmental complaint related to noise nuisances at works area near Ying Tung Estate and two (2) environmental complaints related to waste management for the demolition of site offices near Century Link and Man Tung Road were received on 11, 12 and 26 September 2018 during the reporting period.  Investigations were conducted for each of 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).  Op cit.

([3])              ERM (2018a). Op cit.

([4])              ERM (2018a). Op cit.

([5])              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.

([6])              ERM (2018a). Op cit.

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

([8])              ERM (2018b).  Op cit.