Table of contents

Page

EXECUTIVE SUMMARY.. 1

Introduction. 1

Summary of Main Works Undertaken and Key Measures Implemented. 1

Summary of Exceedances, Investigation and Follow-up. 2

Complaint Handling, Prosecution and Public Engagement 3

Reporting Changes. 3

Future Key Issues. 3

Review of Status and Location of Monitoring Stations. 4

1        INTRODUCTION.. 5

Background. 5

Purpose of the Report 6

Project Organizations. 6

Construction Activities undertaken during the Reporting Month. 7

Status of Environmental Licensing and Permitting. 8

2        AIR Quality.. 10

Monitoring Requirement 10

Monitoring Locations. 10

Monitoring Parameters and Frequency. 10

Monitoring Equipment 11

Monitoring Methodology. 11

Results and Observations. 14

Comparison of EM&A Result with EIA Prediction. 15

3        noise.. 16

Monitoring Requirements. 16

Monitoring Locations. 16

Monitoring Parameters, Frequency and Duration. 16

Monitoring Equipment 17

Monitoring Methodology and QA/QC Procedure. 17

Maintenance and Calibration. 18

Results and Observations. 18

Comparison of EM&A Result with EIA Prediction. 19

4        Water quality.. 20

Monitoring Requirement 20

5        marine ecology.. 20

6        fisheries. 20

7        landscape and visual.. 21

8        cULTURAL HERITAGE.. 24

9        waste management.. 24

10     environmental audit.. 25

Site Audits. 25

Implementation Status of Environmental Mitigation Measures. 25

Implementation Status of Event and Action Plans. 26

Status of Required Submission under Environmental Permit 26

11     Environmental non-conformance.. 28

Summary of Complaint, Warning, Notification of any Summons and Successful Prosecution. 28

Summary of Exceedance. 28

12     future Key issues. 28

Monitoring Schedule. 29

13     Conclusions and recommendations. 30

Conclusions. 30

Recommendations. 30

 

 

lIST OF TABLES

 

Table I            Summary of Key Construction Work in the Reporting Month

Table II           Summary of Key Mitigation Measures Implemented in the Reporting Month

Table III         Summary of Complaint/Summons/Prosecution in the Reporting Month

Table IV         Summary Table for Site Activities in the next Reporting Period

Table V           Summary Table for Review of Status and Location of Monitoring Stations

Table 1.1         Key Project Contacts

Table 1.2         Summary of Key Construction Work in the Reporting Month

Table 1.3         Summary of Environmental License and Permit

Table 2.1         Air Quality Monitoring Locations

Table 2.2         Frequency and Parameters of Air Quality Monitoring

Table 2.3         Air Quality Monitoring Equipment

Table 2.4         Major Dust Source during Air Quality Monitoring

Table 2.5         Comparison of 1-hr TSP Monitoring Data with Predictions in EIA Report (not used)

Table 2.6         Comparison of 24-hr TSP Monitoring Data with Predictions in EIA Report

Table 3.1         Noise Monitoring Stations

Table 3.2         Frequency and Parameters of Noise Monitoring

Table 3.3         Noise Monitoring Equipment

Table 3.4         Major Noise Source during Noise Monitoring

Table 3.5         Baseline Noise Level and Noise Limit Level for Monitoring Stations

Table 3.6         Comparison of Noise Monitoring Data with Predictions in EIA Report

Table 3.7         Additional Noise Monitoring Results

Table 7.1         Construction Phase Landscape and Visual Mitigation Measures

Table 7.2         Construction Phase Audit Checklist for Landscape and Visual Mitigation Measures

Table 10.1       Observations and Recommendations of Site Audit

Table 10.2       Status of Required Submission under Environmental Permit

Table 12.1       Summary Table for Site Activities and the Key Environmental Issues in the next Reporting Period

 

 

lIST OF FIGUREs

 

Figure 1.1        Layout Plan of the Project Site

Figure 1.2        Project Organisation for Environmental Monitoring and Audit

Figure 2           Locations of Air Quality and Construction Noise Monitoring Stations

 

lIST OF APPENDIces

 

Appendix A    Action and Limit Levels

Appendix B    Environmental Monitoring Schedules           

Appendix C    Copies of Calibration Certificates for Air Quality Monitoring

Appendix D    Weather Information

Appendix E     1-hour TSP Monitoring Results and Graphical Presentations (not used)

Appendix F     24-hour TSP Monitoring Results and Graphical Presentations

Appendix G    Copies of Calibration Certificates for Noise Monitoring

Appendix H    Noise Monitoring Results and Graphical Presentations

Appendix I      Site Audit Summary

Appendix J      Event and Action Plans

Appendix K    Environmental Mitigation Implementation Schedule (EMIS)

Appendix L     Summaries of Environmental Complaint, Warning, Summon and Notification of Successful Prosecution

Appendix M    Summary of Exceedance

Appendix N    Tentative Construction Programme

Appendix O    Waste Generated in the Reporting Month

                       

 

 

 

EXECUTIVE SUMMARY

Introduction

 

1.             This is the 35th Environmental Monitoring and Audit (EM&A) Report prepared by the Environmental Team (ET), Cinotech Consultants Ltd., for “Trunk Road T2”. This report summarized the monitoring results and audits findings of the EM&A programme under the issued Environmental Permit (EP) No. EP-451/2013 and in accordance with the EM&A Manual (AEIAR-174/2013) during the reporting month of January 2023.

Summary of Main Works Undertaken and Key Measures Implemented

 

2.            The main works of each works contracts undertaken during the reporting period are as follows:

 

Table I       Summary of Key Construction Work in the Reporting Month

Contract No.

Project Title

Site Activities

ED/2018/04

Trunk Road T2 and Infrastructure Works for Developments at South Apron

·    Depressed Road – Portal Structure, Capping Beam

·    Depressed Road – DPR/SUS connection

·    West Ventilation Building – Basement 2 Construction

·    Launching Shaft / Cut & Cover RC Structure

·    Westbound TBM Tunnelling

·    Eastbound TBM Tunnelling

·    EB Service Gallery Installation

·    WB Service Gallery Installation

·    CP Tympanum construction

·    CP TBM Excavation

·    Sub-sea Corbel Construction

·    SUS Remaining Internal Wall

·    SUS OHVB In-situ Slab

·    Tunnel Segment delivery

 

ED/2020/03

Trunk Road T2 - Traffic Control And Surveillance System (TCSS) and Associated Works(1)

N/A

Notes:

(1): No major construction work was undertaken during reporting month.

N/A: Not applicable

 

 

 

3.             Implementation of the key mitigation measures during the reporting period are as follows:

 

Table II    Summary of Key Mitigation Measures Implemented in the Reporting Month

Contract No. and Project Title

Key Mitigation Measures Implemented

ED/2018/04 - Trunk Road T2 and Infrastructure Works for Developments at South Apron

Air Quality

·          Water spraying regularly on construction site area to avoid dust generation.

·          Excavated dusty materials were covered by impervious sheets.

Noise

·          Air compressor was operated with door closed and have valid noise labels.

·          Use of Quality Powered Mechanical Equipment (QPME)

·          Erecting noise barriers on site to minimize noise impact generated from breaking activities.

Water Quality

·          WetSep was constructed to treat the surface runoff prior to discharge.

Landscape and Visual

·          Tree protection zone were fenced off to protect the existing tree.

ED/2020/03 - Trunk Road T2 - Traffic Control And Surveillance System (TCSS) and Associated Works(1)

N/A

Notes:

(1): No major construction work was undertaken during reporting month.

N/A: Not applicable

 

Summary of Exceedances, Investigation and Follow-up

 

4.              Exceedance of Action/Limit levels during the reporting month (January 2023) and the investigation results and/or follow-up actions:

 

Air Quality Monitoring

·            One (1) Action Level exceedance for 24-hour TSP was recorded.

·            No Limit Level exceedance for 24-hour TSP was recorded.

 

Construction Noise Monitoring

·            No Limit Level exceedance for day time construction noise was recorded in this reporting month.

·            No Action Level exceedance was recorded in this reporting month.

 

Landscape and Visual Monitoring and Audit

·          No non-compliance of the landscape and visual impact was recorded in the reporting month. The implementation of landscape and visual and mitigation measures was checked by a Registered Landscape Architect (RLA) during the environmental site inspections.

 

Complaint Handling, Prosecution and Public Engagement

 

Table III   Summary of Complaint/Summons/Prosecution in the Reporting Month

Event

Event Details

Follow-up/ Remedial Actions

Status/ Remarks

Number

Brief Description

Complaints Received

0

-

-

-

Notification of Summons and Prosecutions Received

0

-

-

-

Public Engagement Activities

0

-

-

-

 

Reporting Changes

5.              No reporting change in this reporting month.

 

Future Key Issues

 

6.              The key works or activities will be anticipated in the next reporting period are as follows:

 

Table IV    Summary Table for Site Activities in the next Reporting Period

Contract No. and Project Title

Site Activities (February 2023)

Key Environmental Issues

ED/2018/04 - Trunk Road T2 and Infrastructure Works for Developments at South Apron

1)      Depressed Road – Portal Structure, Capping Beam

2)      Depressed Road – DPR/SUS connection

3)      West Ventilation Building – Basement 2 Construction

4)      Launching Shaft / Cut & Cover RC Structure

5)      Westbound TBM Tunnelling

6)      Eastbound TBM Tunnelling

7)      EB Service Gallery installation

8)      WB Service Gallery installation

9)      CP Tympanum construction

10)  CP TBM Excavation

11)  SUS Remaining Internal Wall

12)  SUS OHVD in-situ Slab

13)  SUS Fire Board Crown

14)  SUS Fire Board Road Level

15)  Sub-sea Corbel Construction

16)  Sub-sea Crown Fire Board

17)  West Ventilation Building- Platform removal

18)  Tunnel Segment delivery

(A) / (B) / (C) / (D)

ED/2020/03 - Trunk Road T2 - Traffic Control And Surveillance System (TCSS) and Associated Works(1)

N/A

Notes:

(1): No major construction work was undertaken during reporting month.

N/A: Not applicable

(A)    Dust generation from haul road, stockpile of dusty materials, exposed site area, excavation works and rock breaking activities;

(B)    Noisy construction activity such as rock-breaking activities and piling works

(C)    Runoff from exposed slope or site area; and

(D)    Wastewater and runoff discharge from site.

 

Review of Status and Location of Monitoring Stations

7.              According to the EM&A Manual (AEIAR-174/2013), the number and location of the monitoring stations and parameters should be reviewed in every six months, or on as -needed basis, in order to cater for any changes in the surrounding environmental and the nature of works in progress. The latest review was conducted in January 2023 and the review of status and location of monitoring stations are summarized as follow:

 

Table V    Summary Table for Review of Status and Location of Monitoring Stations

Monitoring Station ID

Review Status

Follow-up Action/ Recommendation

KTD 2d

ET has reviewed the status and location of KER1, KTD 1, KTD2d, CKL1 and CKL2. To conclude, the environmental monitoring conducted at KER1, KTD 1, KTD2d, CKL 1 and CKL 2 are appropriate, and the monitoring results reflect how the sensitive receiver(s) is/are impacted by the construction activities of the Project.

N/A

KER1

KTD 1

CKL 1

CKL 2

N/A: Not Applicable


 

1        INTRODUCTION

Background

1.1         In 2009, Civil Engineering and Development Department (CEDD) commissioned a Kai Tak Development (KTD) – Trunk Road T2 and Infrastructure at South Apron Investigation. The assignment covers the provision of the Trunk Road T2 and its connections with the Central Kowloon Route (CKR) at the north apron area and the Tseung Kwan O – Lam Tin Tunnel (TKOLTT) to the south in the Cha Kwo Ling area.

1.2         The Trunk Road T2 Project is one of the designated Projects under Schedule 2 of the EIAO proposed in the KTD. CEDD submitted the Project Profile (No. PP-379/2009) on 24 March 2009 for application for an EIA study brief for the Trunk Road T2 Project under the EIAO. Accordingly, an EIA Study Brief (ESB-203/2009) for the Trunk Road T2 Project was issued on 30 April 2009. The Environmental Impact Assessment (EIA) Report for the Trunk Road T2 Project was approved under the Environmental Impact Assessment Ordinance (EIAO) on 19 September 2013. The corresponding Environmental Permit (EP) was issued on 19 September 2013 (EP no.: EP-451/2013).

1.3         The Contract No. ED/2018/04 is the main contract of Trunk Road T2 (“T2 Main Works”) which comprises mainly the design and construction of a dual two-lane trunk road of approximately 3.4km long with about 3.1km of the trunk road in form of tunnel; ventilation and administration buildings, environmental protection and mitigation works and etc. Moreover, the Contract No. ED/2020/03 is the other contract under Truck Road T2 Project which comprises mainly design and construction of the TCSS for this Project. The EM&A programme at Kai Tak area under the Contract ED/2018/04 and ED/2020/03 are governed by the EP-451/2013 and EM&A Manual (AEIAR-174/2013). The work areas of the Trunk Road T2 Project are shown in Figure 1 and the works to be executed under each Contract and corresponding EP are summarized as follows:

Environmental Permit

Works Description

EP-451/2013 – Trunk Road T2

ED/2018/04

·     Construction of highway and sub-sea tunnel connecting between Central Kowloon Route and Cha Kwo Ling Tunnel

·     Western & Eastern Ventilation Buildings

ED/2020/03

·     Design and construction of TCSS for Trunk Road T2

 

Monitoring Works in Kai Tak under EP-451/2013

1.4         Under Contract No. KL/2014/03 – Kai Tak Development – Stage 3 Infrastructure Works for Development at the Southern Part of the Former Runway (“T2 Advance Works”), the baseline monitoring works in Kai Tak under the EM&A Manual (AEIAR-174/2013) were conducted by the Environmental Team (ET) for the Contract No. KL/2014/03 at the approved relocated monitoring locations (EPD reference: EP2/K19/A/21 pt.5), namely KTD1a, KTD2a & KER1a. During the impact monitoring period, monitoring locations KTD 2a and KER 1a were relocated to new locations, i.e. KTD 2b and KER 1b (EPD reference: ( ) in EP2/K19/A/21 pt. 6 and ( ) in EP2/K19/A/21 pt. 5) respectively. Location KTD2b was then further relocated to location KTD2c, the proposal of such relocation was submitted to EPD on 24 March 2020 and was approved by EPD on 6 April 2020 (EPD reference: ( ) in EP2/K19/A/21 pt.7). The aforementioned relocation was effective from 9 April 2020. Since the major part of work under Contract No. KL/2014/03 has been completed and monitoring works conducted by the ET of Contract No. KL/2014/03 was determined to be ceased, the impact monitoring within the Kai Tak area was then handed over to the ET of Contract No. ED/2018/04 on 1 August 2020.The monitoring location has been reviewed and updated to obtain the data with higher representative based on several conditions, such as distance between monitoring location and the sensitive receiver, non-project related interference, obstruction to the construction works on site and the power supply problem. The monitoring location KTD1a and KER1b has been updated to the monitoring location KTD1 and KER1 on 3 August 2020, where are the original location as proposed in the EM&A manual (AEIAR-174/2013). And the monitoring location KTD2c was remained unchanged after the aforementioned review. Location KTD2c was then further relocated to location KTD2d, the proposal of such relocation was submitted on 9 March 2021 and was approved by EPD on 3 27th 2021 (EPD reference: ( ) in EP2/K19/A/21 pt.8). The aforementioned relocation was effective from 24 May 2021. The impact monitoring for the three stations KTD1, KTD2d and KER1 are currently conducted by the ET of T2 Main Works

 

Monitoring Works in Cha Kwo Ling under EP-451/2013

1.5         The environmental impact of the remaining works in Cha Kwo Ling, under EP-451/2013, shall be monitored at the two proposed stations, namely CKL1, CKL2, in accordance to the EM&A Manual (AEIAR-174/2013). The impact monitoring for the two proposed stations shall be conducted by the ET of T2 Main Works.

1.6         Cinotech Consultants Ltd. Was designated as the Environmental Team (ET) to undertake the EM&A works for “Trunk Road T2 and Infrastructure Works for Developments at the Former South Apron” (hereinafter called the “Project”) and “Trunk Road T2 –Traffic Control & Surveillance System (TCSS) and Associated Works”.

Purpose of the Report

1.7         This is the 35th Monthly EM&A Report which summarises the impact monitoring results and audit findings for the EM&A programme during the reporting period in January 2023.

Project Organizations

1.8         Different Parties with different levels of involvement in the Project organization include:

·          Permit Holder – Civil Engineering and Development Department  (CEDD)

·          Supervisor Representative – Hyder-Meinhardt Joint Venture (HMJV)

·          Environmental Team (ET) – Cinotech Consultants Limited (Cinotech)

·          Independent Environmental Checker (IEC) – Ramboll Hong Kong Limited (Ramboll)

·          Contractor – Bouygues Travaux Publics (BTP) (For ED/2018/04) & GTECH Services (Hong Kong) Limited (For ED/2020/03)

 

1.9         The key contacts of the Project are shown in Table 1.1.

Table 1.1       Key Project Contacts

 

Party

Role

Contact Person

Phone No.

CEDD

Permit Holder

Mr. Wong Chi Wai, Tommy

3842 7111

HMJV

Supervisor Representative

Ms. Hazel Tang

2149 8524

Cinotech

Environmental Team

Mr. KS Lee (ETL)

2151 2091

Ms. Karina Chan

2157 3880

Ramboll

Independent Environmental Checker

Mr. YH Hui

3465 2850

BTP

Contractor (ED/2018/04)

Mr. Marcus Cheung

6628 2685

GTECH

Contractor (ED/2020/03)

Mr. Terry Leung

2123 0848

1.10     The Organizational Structure for Environmental Management is shown in Figure 1.2.

Construction Activities undertaken during the Reporting Month

1.11     The major site activities undertaken in the reporting month included:

Table 1.2       Summary of Key Construction Work in the Reporting Month

 

Contract No.

Project Title

Site Activities

ED/2018/04

Trunk Road T2 and Infrastructure Works for Developments at South Apron

·    Depressed Road – Portal Structure, Capping Beam

·    Depressed Road – DPR/SUS connection

·    West Ventilation Building – Basement 2 Construction

·    Launching Shaft / Cut & Cover RC Structure

·    Westbound TBM Tunnelling

·    Eastbound TBM Tunnelling

·    EB Service Gallery Installation

·    WB Service Gallery Installation

·    CP Tympanum construction

·    CP TBM Excavation

·    Sub-sea Corbel Construction

·    SUS Remaining Internal Wall

·    SUS OHVB In-situ Slab

·    Tunnel Segment delivery

 

ED/2020/03

Trunk Road T2 – Traffic Control And Surveillance System (TCSS) and Associated Works(1)

 

N/A

Notes:

(1): No major construction work was undertaken during reporting month.

N/A: Not applicable

 

1.12     The EM&A programme requires construction noise, air quality monitoring and environmental site audit, etc. The EM&A requirements for each parameter are described in the following sections, including:

·          All monitoring parameters;

·          Action and Limit levels for all environmental parameters;

·          Event Action Plans;

·          Environmental mitigation measures, as recommended in the Project EIA Report.

1.13     The advice on the implementation status of environmental protection and pollution control/mitigation measures is summarized in Section 10 of this report.

1.14     This report presents the monitoring results, observations, locations, equipment, period, methodology and QA/QC procedures of the monitoring parameters of the required environmental monitoring works and audit works for the Project in January 2023.

Status of Environmental Licensing and Permitting

1.15     All permits/licenses obtained for the Project are summarized in Table 1.3.

Table 1.3      Summary of Environmental License and Permit

 

 

Contract No.

Permit / License No.

Valid Period

Status

From

To

Environmental Permit (EP)

N/A

EP-451/2013

19 Sep 2013

N/A

Valid

Notification pursuant to Air Pollution (Construction Dust) Regulation

ED/2018/04

Ref. No.: 451120

20 Nov 2019

N/A

Valid

ED/2020/03

Ref. No.: 483143

15 Aug 2022

N/A

Valid

Billing Account for Construction Waste Disposal

ED/2018/04

A/C No.: 7036016

09 Dec 2019

N/A

Valid

ED/2020/03

A/C No.: 7043158

31 Jan 2022

N/A

Valid

Billing Account for Vessel Disposal

ED/2018/04

A/C No.:7037747 (Application No.: CEDD01170)

26 Oct 2022

25 Jan 2023

Expired on 25 Jan 2023

ED/2018/04

A/C No.:7037747 (Application No.: CEDD01180)

26 Jan 2023

25 Apr 2023

Valid

Construction Noise Permit

ED/2018/04

CNP No. (For Launching Shaft and Barging Point): GW- RE0817-22

24 Aug 2022

23 Feb 2023

Valid

CNP No. (For Depressed Road): GW-RE0936-22

26 Sep 2022

25 Mar 2023

Valid

CNP No. (For Launching Shaft and Barging Point): GW- RE1079-22

24 Oct 2022

30 Mar 2023

Valid

Wastewater Discharge License

ED/2018/04

WT00036183-2020 (For Depressed Road Area)

27 Jul 2020

31 Jul 2025

Valid

WT00039117-2021 (For Site Office and Support Area)

28 Sep 2021

30 Sep 2026

Valid

WT00036228-2020 (For Launching Shaft)

10 Nov 2021

31 Jul 2025

Valid

Chemical Waste Producer License

ED/2018/04

WPN: 5213-286-B2557-03

09 Mar 2020

N/A

Valid

Marine Dumping Permit

ED/2018/04

EP/MD/23-056

03 Nov 2022

2 Jan 2023

Expired on 2 Jan 2023

ED/2018/04

EP/MD/23-069

26 Nov 2022

25 Jan 2023

Expired on 25 Jan 2023

ED/2018/04

EP/MD/23-057

31 Dec 2022

28 Feb 2023

Valid

 

2.      AIR Quality

Monitoring Requirement

2.1         According to the EM&A Manual (AEIAR-174/2013), 24-hour Total Suspended Particulates (TSP) monitoring was conducted to monitor the air quality for this Project. For regular impact monitoring, a sampling frequency of at least once in every six days at all of the monitoring stations for 24-hour TSP monitoring. In case of complaints, 1-hour TSP monitoring should be conducted at least three times in every six days when the highest dust impacts are likely to occur. Appendix A shows the established Action/Limit Levels for the environmental monitoring works.

Monitoring Locations

2.2         Five designated monitoring stations were selected for air quality monitoring programme. Table 2.1 describes the air quality monitoring locations, which are also depicted in Figure 2.

2.3         The monitoring location at Kai Tak area has been reviewed and updated to obtain the data with higher representative based on several conditions, such as distance between monitoring location and the sensitive receiver, non-project related interference, obstruction to the construction works on site and the power supply problem. The monitoring location KTD1a and KER1b has been updated to KTD1 and KER1 respectively, where are the original location as proposed in the EM&A manual (AEIAR-174/2013). And the monitoring location KTD2c was remained unchanged after the aforementioned review. Monitoring location KTD2c was then further relocated to KTD2d after the review of status and location of monitoring station conducted in between February and March 2021.

Table 2.1 Air Quality Monitoring Locations

Monitoring Stations

Location

KTD1

Centre of Excellence in Paediatrics (Children’s Hospital)

KTD2d

Next to the SOR Office of Trunk Road T2 in Kai Tak Area

KER1

Future Residential Development at Kerry Godown

CKL1

Flat 121 Cha Kwo Ling Village

CKL2

Flat 103 Cha Kwo Ling Village

 

Monitoring Parameters and Frequency

2.4         Table 2.2 summarizes the monitoring parameters, monitoring period and frequencies of impact air quality monitoring. The monitoring schedule is shown in Appendix B.

 

Table 2.2 Frequency and Parameters of Air Quality Monitoring

Monitoring Stations

Parameter

Period

Frequency

KTD1, KTD2d, KER1, CKL1 & CKL2

1-hour TSP

0700 – 1900

3 times per 6 days (as required in case of complaints)

KTD1, KTD2d, KER1, CKL1 & CKL2

24-hour TSP

24 hours

Once every 6 days

 

 

Monitoring Equipment

2.5         High Volume Samplers (HVS) in compliance with the specification stipulated in the EM&A Manual (AEIAR-174/2013), Section 2.2.1.4, were used to carry out 24-hour TSP monitoring. Direct reading dust meter were also used to measure 1-hour average TSP levels. The 1-hour sampling was determined by HVS to check the validity and accuracy of the results measured by direct reading method.

2.6         Wind data monitoring equipment was set at rooftop (about 41/F) of Yau Lai Estate Bik Lai House, Lam Tin for logging wind speed and wind direction such that the wind sensors were clear of obstructions or turbulence caused by building. The wind data monitoring equipment was re-calibrated at least once every six months and the wind directions were divided into 16 sectors of 22.5 degrees each. Wind data is attached in Appendix D.

2.7         Table 2.3 summarizes the equipment used for air quality monitoring. Copies of calibration certificates are attached in Appendix C.

Table 2.3         Air Quality Monitoring Equipment

Equipment

Model

Quantity

HVS Sampler

TISCH Model: TE-5170 (Serial no. 0723, 1956, 10595, 1316, 5280)

5

Calibrator

TISCH Model: TE-5025A (Serial no. 3864)

1

Wind Anemometer

Davis Weather Monitor II, Model no. 7440 (Serial no. MC01010A44)

1

                 

 

Monitoring Methodology

1-hour TSP Monitoring

Measuring Procedures

2.8         The measuring procedures of the 1-hour dust meter are in accordance with the Manufacturer’s Instruction Manual as follows:

(Sibata Model No.: LD-3B/LD-5R)

·           The 1-hour dust meter is placed at least 1.3 meters above ground.

·           Set POWER to “ON” and make sure that the battery level was not flash or in low level.

·           Allow the instrument to stand for about 3 minutes and then the cap of the air sampling inlet has been released.

·           Push the knob at MEASURE position.

·            Set time/mode setting to [BG] by pushing the time setting switch.  Then, start the background measurement by pushing the start/stop switch once.  It will take 6 sec. to complete the background measurement.

·            Push the time setting switch to change the time setting display to [MANUAL] at the bottom left of the liquid crystal display. Finally, push the start/stop switch to stop the measuring after 1 hour sampling.

·           Information such as sampling date, time, count value and site condition were recorded during the monitoring period.

 

Maintenance/Calibration

2.9         The following maintenance/calibration is required for the 1-hour dust meter:

·           Check and calibrate the meter by HVS to check the validity and accuracy of the results measured by direct reading method at 2-month intervals throughout all stages of the air quality monitoring.

 

 

24-hour TSP Monitoring

Instrumentation

2.10     High volume samplers (HVS) (TISCH Model: TE-5170) complete with appropriate sampling inlets was employed for 24-hour TSP monitoring.  The sampler was composed of a motor, a filter holder, a flow controller and a sampling inlet and its performance specification complied with that required by USEPA Standard Title 40, Code of Federation Regulations Chapter 1 (Part 50). Moreover, the HVS also met all the requirements in Section 2.2 of the Annex II Specification.

2.11     The positioning of the HVS samplers are as follows:

·            A horizontal platform with appropriate support to secure the samplers against gusty wind shall be provided;

·            No two samplers shall be placed less than 2 meter apart;

·            The distance between the sampler and an obstacle, such as buildings, must be at least twice the height that the obstacle protrudes above the sampler;

·            A minimum of 2 metres of separation from walls, parapets and penthouses is required for rooftop samplers;

·            A minimum of 2 metres of separation from any supporting structure, measured horizontally is required;

·            No furnace or incinerator flue is nearby;

·            Airflow around the sampler is unrestricted;

·            The sampler is more than 20 metres from the dripline;

·            Any wire fence and gate, to protect the sampler, shall not cause any obstruction during monitoring;

·            Permission must be obtained to set up the samplers and to obtain access to the monitoring stations; and

·            A secured supply of electricity is needed to operate the samplers.

 

 

Operating/analytical procedures for the operation of HVS

2.12     Operating/analytical procedures for the air quality monitoring are highlighted as follows:

·           Prior to the commencement of the dust sampling, the flow rate of the high volume sampler was properly set (between 0.6 m3/min. and 1.7 m3/min.) in accordance with the EM&A manual (AEIAR-174/2013). The flow rate shall be indicated on the flow rate chart.

·           For TSP sampling, fiberglass filters with a collection efficiency of > 99% for particles of 0.3μm diameter were used.

·           The power supply was checked to ensure the sampler worked properly.  On sampling, the sampler was operated for 5 minutes to establish thermal equilibrium before placing any filter media at the designated air monitoring station.

·           The filter holding frame was then removed by loosening the four nuts and a weighted and conditioned filter was carefully centered with the stamped number upwards, on a supporting screen.

·           The filter was aligned on the screen so that the gasket formed an airtight seal on the outer edges of the filter.  Then the filter holding frame was tightened to the filter holder with swing bolts. The applied pressure should be sufficient to avoid air leakage at the edges.

·           The shelter lid was closed and secured with the aluminum strip.

·           The timer was then programmed.  Information was recorded on the record sheet, which included the starting time, the weather condition and the filter number (the initial weight of the filter paper can be found out by using the filter number).

·           After sampling, the filter was removed and sent to the HOKLAS laboratory (High Precision Chemical Testing Ltd.) for weighing.  The elapsed time was also recorded.

·           Before weighing, all filters were equilibrated in a conditioning environment for 24 hours. The conditioning environment temperature should be between 25°C and 30°C and not vary by more than ±3°C; the relative humidity (RH) should be < 50% and not vary by more than ±5%. A convenient working RH is 40%.

 

Maintenance/Calibration

2.13     The following maintenance/calibration is required for the HVS:

·           The high volume motors and their accessories were properly maintained. Appropriate maintenance such as routine motor brushes replacement and electrical wiring checking were made to ensure that the equipment and necessary power supply are in good working condition.

·           High volume samplers were calibrated at bi-monthly intervals using TE-5025A Calibration Kit throughout all stages of the air quality monitoring.

 

Results and Observations

2.14     Impact air quality monitoring was conducted at five monitoring stations as scheduled. The monitoring schedule is shown in Appendix B.

2.15     One (1) Action and no Limit Level exceedance was recorded for 24-hour TSP monitoring in the reporting month. No exceedance of 24-hour TSP were considered as project related and one (1) exceedance of 24-hour TSP were considered as non-project related. Details of the exceedance are presented in Appendix M.

2.16     The air temperature, relative humidity, and the precipitation data were obtained from daily extracts of Hong Kong Observatory Climate Information Service. This weather information for the reporting month is summarized in Appendix D.

2.17     The monitoring data and graphical presentations of 24-hour TSP monitoring results are shown in Appendix F.

2.18     According to field observations observed in the reporting period, the major dust source identified at the designated air quality monitoring stations are as follows:

Table 2.4   Major Dust Source during Air Quality Monitoring

Monitoring Stations

Major Dust Source

KTD 1 - Centre of Excellence in Paediatrics (Children’s Hospital)

·         Project related construction activities (i.e., Loading and unloading of C&D wastes, drilling, crushing of material);

·         Vehicle movement in the site;

·         Construction activities at the nearby construction sites of New Acute Hospital; and,

·         Road traffic along Shing Fung Road, Shing Cheong Road, Cheung Yip Street, Kai Hing Road and Kwun Tong Bypass.

KER 1 – Future Residential Development at Kerry Godown

KTD 2d – Next to the SOR Office of Trunk Road T2 in Kai Tak Area

·         Project related construction activities (i.e., Loading and unloading of C&D material, crushing of material);

·         Vehicle movement in the site; and,

·         Non-project related construction activities

CKL1 - Flat 121 Cha Kwo Ling Village

Road Traffic along Cha Kwo Ling Road

CKL2 - Flat 103 Cha Kwo Ling Village

Road Traffic along Cha Kwo Ling Road

 

 

 

 

Comparison of EM&A Result with EIA Prediction

2.19     The air monitoring data was compared with the predictions in Table 4.14 of EIA Report, AEIAR-174/2013 (as approved in 2013) as summarised in Table 2.6 for 24-hour TSP.

Table 2.6     Comparison of 24-hr TSP Monitoring Data with Predictions in EIA Report

Monitoring Stations

ASR ID

Predicted Maximum 24-hr TSP Concentration in EIA Report (AEIAR-174/2013), μg/m3

Maximum 24-hr TSP Concentration in the Reporting Month
 (January 2023),
μg/m3

KTD 1 - Centre of Excellence in Paediatrics (Children’s Hospital)

KTD3

126

32.8

KTD 2d – Next to the SOR Office of Trunk Road T2 in Kai Tak Area

N/A(1)

N/A(1)

118.7

KER 1 – Future Residential Development at Kerry Godown

KTD6

169

111.6

CKL1 - Flat 121 Cha Kwo Ling Village

N/A(1)

N/A(1)

112.0

CKL2 - Flat 103 Cha Kwo Ling Village

N/A(1)

N/A(1)

197.9

Remarks:

(1)     No 24-hr TSP concentration was predicted in EIA Report (AEIAR-174/2013)

 

2.20     In the reporting month the 24-hour TSP concentration at KTD1 & KER1 were lower than the prediction in the EIA Report, AEIAR-174/2013 (as approved in 2013). One (1) Action and no Limit level exceedance for 24-hour TSP was recorded in the reporting period.


3        noise

Monitoring Requirements

3.1         According to the EM&A Manual (AEIAR-174/2013), construction noise monitoring was conducted to monitor the construction noise arising from the construction activities. The regular monitoring frequency for each monitoring station shall be on a weekly basis and conduct one set of measurements between 0700 and 1900 hours on normal weekdays. Appendix A shows the established Action and Limit Levels for the environmental monitoring works.

Monitoring Locations

3.2         Noise monitoring was conducted at five designated monitoring stations, namely KTD1, KTD2d, KER1, CKL1 and CKL2 in the reporting period. Table 3.1 and Figure 2 show the locations of these stations.

3.3         The monitoring location at Kai Tak area has been reviewed and updated to obtain the data with higher representative based on several conditions, such as distance between monitoring location and the sensitive receiver, non-project related interference, obstruction to the construction works on site and the power supply problem. The monitoring location KTD1a and KER1b has been updated to KTD1 and KER1 respectively, where are the original location as proposed in the EM&A manual (AEIAR-174/2013). And the monitoring location KTD2c was remained unchanged after the aforementioned review. Monitoring location KTD2c was then further relocated to KTD2d after the review of status and location of monitoring station conducted in between February and March 2021.

 

Table 3.1   Noise Monitoring Stations

Monitoring Stations

Location

KTD1

Centre of Excellence in Paediatrics (Children’s Hospital)

KTD2d

Next to the SOR Office of Trunk Road T2 in Kai Tak Area

KER1

Future Residential Development at Kerry Godown

CKL1

Flat 121 Cha Kwo Ling Village

CKL2

Flat 103 Cha Kwo Ling Village

 

Monitoring Parameters, Frequency and Duration

3.4  Table 3.2 summarizes the monitoring parameters, frequency and total duration of monitoring.  The noise monitoring schedule is shown in Appendix B.

 

         Table 3.2         Frequency and Parameters of Noise Monitoring

Monitoring Stations

Time Period

Duration

Frequency

Parameter

Measurement

KTD1

0700-1900 hrs on normal weekdays

30 minutes

Once per week

L10(30 min.) dB(A)

 

L90(30 min.) dB(A)

 

Leq(30 min.) dB(A)

Façade Measurement

KTD2d

Free Field Measurement

KER1

Free Field Measurement

CKL1

Free Field Measurement

CKL2

Free Field Measurement

Monitoring Equipment

3.5  Integrating Sound Level Meter was used for impact noise monitoring. The meters were Type 1 sound level meter capable of giving a continuous readout of the noise level readings including equivalent continuous sound pressure level (Leq) and percentile sound pressure level (Lx) that also complied with International Electrotechnical Commission Publications 651:1979 (Type 1) and 804:1985 (Type 1) specifications. Table 3.3 summarizes the noise monitoring equipment being used within the reporting period. Copies of calibration certificates are attached in Appendix G.

Table 3.3        Noise Monitoring Equipment

Equipment

Model

Quantity

Integrating Sound Level Meter

BSWA 308 (Serial no. 580156,580287)

2

SVAN 957 (Serial no. 23852,21455)

2

Calibrator

ST-120 (Serial no. 181001637)

1

Monitoring Methodology and QA/QC Procedure

3.6  The monitoring procedures are as follows:

·              The monitoring station was normally be at a point 1m from the exterior of the sensitive receivers building façade and be at a position 1.2m above the ground.

·              For free field measurement, the meter was positioned away from any nearby reflective surfaces. All records for free field noise levels were adjusted with a correction of +3 dB(A).

·              The battery condition was checked to ensure the correct functioning of the meter.

·              Parameters such as frequency weighting, the time weighting and the measurement time were set as follows:

-            Frequency weighting: A

-            Time weighting: Fast

-            Time measurement: 30 minutes

·              Prior to and after each noise measurement, the meter was calibrated using a Calibrator for 94.0 dB at 1000 Hz.  If the difference in the calibration level before and after measurement was more than 1.0 dB, the measurement would be considered invalid and repeat of noise measurement would be required after re-calibration or repair of the equipment.

·              The wind speed was frequently checked with the portable wind meter.

·              At the end of the monitoring period, the Leq, L90 and L10 were recorded.  In addition, site conditions and noise sources were recorded on a standard record sheet.

·              Noise monitoring would be cancelled in the presence of fog, rain, and wind with a steady speed exceeding 5 m/s, or wind with gusts exceeding 10 m/s. Supplementary monitoring would be provided to ensure sufficient data would be obtained.

Maintenance and Calibration

3.7         The microphone head of the sound level meter and calibrator were cleaned with a soft cloth at quarterly intervals.

3.8         The sound level meter and calibrator were checked and calibrated at yearly intervals.

3.9         Immediately prior to and following each noise measurement the accuracy of the sound level meter was checked using an acoustic calibrator generating a known sound pressure level at a known frequency. Measurements were accepted as valid only if the calibration levels from before and after the noise measurement agree to within 1.0 dB.

Results and Observations

3.10     Impact noise monitoring was conducted at five monitoring stations as scheduled. The monitoring schedule is shown in Appendix B. No Action/ Limit Level exceedance was recorded for day time construction noise monitoring in the reporting month.

3.11     Noise monitoring results and graphical presentations are shown in Appendix H.

3.12     According to field observations observed in the reporting period, the major noise sources identified at the noise monitoring stations are shown in Table 3.4.

Table 3.4       Other Noise Source Identified during Noise Monitoring

Monitoring Stations

Major Noise Source

KTD 1

·         Project related construction activities (Loading and unloading of C&D waste, travel of vehicles, use of PME and other plants, and other construction activities);

·         Vehicle movement in the site;

·         Road traffic along Shing Cheong Road; and,

·         Non-project related construction activities at the nearby construction site of New Acute Hospital.

KTD 2d

·         Project related construction activities (Loading and unloading of C&D waste, travel of vehicles, use of PME and other plants, and other construction activities);

·         Vehicle movement in the site; and,

·         Non-project related construction activities.

KER 1

·         Road traffic along Kai Hing Road.

·         Project related construction activities (Travel of vehicles, use of PME and other plants, and other construction activities)

CKL1

Road traffic along Cha Kwo Ling Road.

CKL2

Road traffic along Cha Kwo Ling Road

 

3.13     The baseline noise level and the Noise Limit Level at each designated noise monitoring station are presented in Table 3.5.

Table 3.5      Baseline Noise Level and Noise Limit Level for Monitoring Stations

Monitoring Stations

Baseline Noise Level, dB (A)
(at 0700 – 1900 hrs on normal weekdays)

Noise Limit Level, dB (A) (at 0700 – 1900 hrs on normal weekdays)

KTD1

78

75

KTD2d

64

KER1

65

CKL1

72.4

CKL2

71.4

 

Comparison of EM&A Result with EIA Prediction

3.14     The noise monitoring data was compared with the predictions in Table 5.13 of EIA Report (AEIAR-174/2013) as summarised in Table 3.6.

Table 3.6     Maximum Predicted Mitigated Construction Noise Levels in EIA Report

Monitoring Stations

NSR ID

Maximum Predicted Mitigated Construction Noise Levels in EIA Report (AEIAR-174/2013), dB(A)

Maximum Construction Noise Levels in the Reporting Month
 (January 2023),
Leq (30min) dB(A)

KTD 1 - Centre of Excellence in Paediatrics (Children’s Hospital)

KTD1

74

75.7

KTD2d – Next to the SOR Office of Trunk Road T2 in Kai Tak Area

N/A(1)

N/A(1)

73.2

KER 1 – Future Residential Development at Kerry Godown

KER1

75

73.9

CKL1 - Flat 121 Cha Kwo Ling Village

CKL4

71

76.1

CKL2 - Flat 103 Cha Kwo Ling Village

CKL5

69

76.7

Remarks:

(1): No Maximum Predicted Mitigated Construction Noise Levels was predicted in EIA Report (AEIAR-174/2013)

 

3.15     The results at KTD1, CKL1 and CKL2 were higher than the maximum predicted mitigated construction noise level in the EIA Report, AEIAR-174/2013 (as approved in 2013), this may be due to fluctuations of traffic flow along the Kwun Tong Bypass, the construction activities of New Acute Hospital development and the traffic flow along Cha Kwo Ling Road throughout the day. Besides, the result at KER1 were lower than the maximum predicted mitigated construction noise level in the EIA Report. No Action/ Limit Level exceedance were recorded in the reporting period.

4        Water quality

Monitoring Requirement

4.1                   According to Section 4.3.1.1 of EM&A Manual (AEIAR-174/2013), no water quality monitoring is required during the construction phase.

4.2                   According to Section 4.3.1.5 of EM&A Manual (AEIAR-174/2013), compliance site audits are to be undertaken by the Engineer and ET and escorted by the Contractor to ensure that a valid discharge license has been issued by the EPD prior to the discharge of the effluent from the construction activities of the Project site. Monitoring of the quality of the treated effluent from the works areas should be carried out in accordance with the Water Pollution Control Ordinance (WPCO) license. The audit results reflect whether the effluent quality is in compliance with the discharge license requirements, the summaries of site audits are attached in Appendix I.

4.3                   In the event of non-compliance the responsibilities of the relevant parties is detailed in the Event / Action plan attached in Appendix J.

 

5        marine ecology

5.1  According to Section 5.3.1.1 of EM&A Manual (AEIAR-174/2013), ET will be required to undertake audit of good site practice for habitat protection as detailed below. The summaries of site audits are attached in Appendix I.

·         Avoid damage and disturbance to the remaining and surrounding natural habitat;

·         Ensure placement of equipment is within designated areas within the existing disturbed land;

·         Ensure construction activities are restricted to within the proposed works boundary;

·         Ensure spoil heaps are be covered at all times;

·         Ensure that disturbed areas are reinstated immediately after completion of the works; and

·         Ensure enhancement planting works undertaken.

6        fisheries

6.1  According to Section 6.3.1.2 of EM&A Manual (AEIAR-174/2013), no specific fisheries monitoring and audit programme is required during the construction phase.

6.2  The implementation of the water quality mitigation measures stated in the Water Quality Impact Assessment (Refer to Section 6 of the EIA Report (AEIAR-174/2013)) will be audited as part of the EM&A procedures during the construction period and the details are presented in Section 4.2 of this Report. The summaries of site audits are attached in Appendix I.

7        landscape and visual

7.1  According to the EM&A Manual (AEIAR-174/2013), a series of mitigation measures were recommended to ameliorate the landscape and visual impacts of the Project. The mitigation measures for construction stage are summarized in Table 7.1 below and provided in Appendix K:

Table 7.1     Construction Phase Landscape and Visual Mitigation Measures

ID No.

Landscape and Visual Mitigation Measure

CM1

All works shall be carefully designed to minimize impacts on existing landscape resources and visually sensitive receivers. Existing trees within works area shall be retained and protected.

CM2

Existing trees of good quality and condition that are unavoidably affected by the works should be transplanted.

CM3

Not used.

CM4

Not used.

CM5

Large temporary stockpiles of excavated material shall be covered with unobtrusive sheeting to prevent dust and dirt spreading to adjacent landscape areas and vegetation, and to create a neat and tidy visual appearance.

 

CM6

Construction plant and building material shall be orderly and carefully stored in order to create a neat and tidy visual appearance

 

CM7

Erection of decorative screen hoarding should be designed to be compatible with the existing urban context.

 

CM8

All lighting in construction site shall be carefully controlled to minimize light pollution and night-time glare to nearby residences and GIC user. The contractor shall consider other security measures, which shall minimize the visual impacts.

 

 

7.2  A specialist Landscape Sub-Contractor should be employed by the Contractor for the implementation of landscape construction works and subsequent maintenance operations during the establishment period. It is proposed that the planting works will be on-site and the planting should be completed during the construction contract. The monitoring of the planting establishment should be undertaken for a 12 month period which could extend throughout the Contractor’s one-year maintenance period, which will be within the first operational year of the Project.

7.3  All measures undertaken by both the Contractor and the specialist Landscape Sub-Contractor during the construction phase and first year of the operational phase shall be audited by a Registered Landscape Architect (RLA), as a member of the Environmental Team (ET), on a regular basis to ensure compliance with the intended aims of the measures. To fulfil the aforementioned requirements, on-site landscape and visual mitigation measures were audited by RLA in the reporting month.

7.4  According to Section 7.3.1.2 of the EM&A Manual (AEIAR-174/2013), site audits shall be undertaken at least once every two weeks throughout the construction period to monitor and audit the timely implementation of landscape and visual mitigation measures within the site boundaries of this Project.

7.5  The broad scope of the audit is detailed below but should also be undertaken with reference to the more specific checklist provided in Table 7.2. The summaries of site audits are attached in Appendix I:

·         The extent of the agreed works areas should be regularly checked during the construction phase. Any trespass by the Contractor outside the limit of the works, including any damage to existing trees and soft landscape areas shall be prohibited;

·         the progress of the engineering works should be regularly reviewed on site to identify the earliest practical opportunities for the landscape works to be undertaken;

·         all existing trees and vegetation within the study area which are not directly affected by the works are retained and protected;

·         the methods of protecting existing vegetation proposed by the Contractor are acceptable and enforced;

·         preparation, lifting transport and re-planting operations for any transplanted trees;

·         all landscaping works are carried out in accordance with the specifications;

·         the planting of new trees, shrubs, groundcover, climbers, ferns, grasses and other plans, together with the replanting of any transplanted trees are carried out properly and within the right season; and

·         all necessary horticultural operations and replacement planting are undertaken throughout the Establishment Period to ensure the healthy establishment and growth of both transplanted trees and all newly established plants.

 

Table 7.2     Construction Phase Audit Checklist for Landscape and Visual Mitigation

Measures

Area of Works

Items to be Monitored

Advance planting

Monitoring of implementation and maintenance of planting, and against possible incursion, physical damage, fire, pollution, surface erosion, etc.

Protection of all trees and existing soft landscape areas to be retained

Identification and demarcation of trees / vegetation to be retained, erection of physical protection (e.g. fencing), monitoring against possible incursion, physical damage, fire, pollution, surface erosion, etc.

Clearance of existing vegetation

Identification and demarcation of trees / vegetation to be cleared, checking of extent of works to minimise damage, monitoring of adjacent areas against possible incursion, physical damage, fire, pollution, surface erosion, etc.

Pruning of trees

Identification and demarcation of trees / vegetation to be pruned, monitoring of extent of pruning to minimise damage, timing of operations, implementation of all stages of preparatory and pruning works, and maintenance of pruned vegetation, etc.

Plant supply

Monitoring of operations relating to the supply of specialist plant material (including the collecting, germination and growth of plants from seed) to ensure that plants will be available in time to be used within the construction works.

Soiling, planting, etc.

Monitoring of implementation and maintenance of soiling and planting works and against possible incursion, physical damage, fire, pollution, surface erosion, etc.

Site fencing and hoarding

Implementation and maintenance, to ensure compliance with agreed designs and check that it matches the surrounding environment and does not cause visual intrusion.

Architectural treatment of engineering works.

Implementation and maintenance of mitigation measures, to ensure compliance with agreed designs as applicable.

Establishment Works

Monitoring of implementation of maintenance operations during Establishment Period.

 

7.6  In the event of non-compliance the responsibilities of the relevant parties is detailed in the Event / Action plan attached in Appendix J.

7.7  In the reporting month, no non-compliance of the landscape and visual mitigation measures was recorded by RLA.


 

8        cULTURAL HERITAGE

8.1  According to Section 8.3.1.1 of EM&A Manual (AEIAR-174/2013), as a precautionary measure, it is recommended that if any antiquity or supposed antiquity is discovered during the course of the excavation works undertaken by the Contractor, the discovery shall be reported to the AMO immediately and all necessary measures taken to preserve it.

8.2  According to Section 8.3.1.2 of EM&A Manual (AEIAR-174/2013), no EM&A is required during the construction and operational phase.

 

9        waste management

9.1  According to Section 9.3.1.1 of EM&A Manual (AEIAR-174/2013), the effective management of waste arisings during the construction phase will be monitored through the site audit programme. Regular audits and site inspections should be carried out by the Engineer, ET and Contractor to ensure that the recommended good site practices and other mitigation measures are implemented by the Contractor. The summaries of site audits are attached in Appendix I.

9.2  According to Sections 9.3.1.3 and 9.3.1.4 of EM&A Manual (AEIAR-174/2013), documents including licenses, permits, disposal and recycling records should be reviewed and audited during site audits for the compliance with the legislation and contract requirements to ensure proper records are being maintained and procedures undertaken in accordance with the Waste Management Plan.

9.3  With reference to the relevant handing records of this Project, the quantities of different types of waste generated in the reporting month are summarized and presented in the Appendix O.

 

 

 

10    environmental audit

Site Audits

10.1          Site audits were carried out on a weekly basis to monitor the timely implementation of proper environmental management practices and mitigation measures in the Project site. The summaries of site audits are attached in Appendix I. 

10.2          Site audits for the each contract were conducted as follows.

·         ED/2018/04 – Site audit were conducted on 05, 12, 19 and 26 January 2023 in the reporting month. Site inspection of the IEC was conducted on 19 January 2022. No non-compliance was observed during the site audit.

·         ED/2020/03 – Site audit was conducted on 13 January 2023 in the reporting month.

Implementation Status of Environmental Mitigation Measures

10.3          According to Environmental Permits, the approved EIA Reports (Register No.: AEIAR-174/2013 and AEIAR-173/2013), and the EM&A Manuals of the Project (AEIAR-174/2013 and AEIAR-173/2013), the mitigation measures detailed in the documents are recommended to be implemented during the construction phase. An Environmental Mitigation Implementation Schedule (EMIS) is provided in Appendix K.

10.4          The ET weekly site inspections were carried out during the reporting month and the observations and recommendations are summarized in Table 10.1. Refer to Appendix I for the site inspection summary reports in the reporting month.

Table 10.1    Observations and Recommendations of Site Audit

Parameters

Date

Observations and Recommendations

Follow-up

Air Quality

5 Jan 2023

Spraying water was not observed when breaking the concrete in the TBM Tunnel (Westbound).

The contractor has provided the spraying machine for worker when breaking the concrete.

5 Jan 2023

Damaged NRMM label was observed in the TBM Tunnel (Westbound).

The NRMM label has been replaced with the new one.

19 Jan 2023

3 sides enclosure should be provided when conducting the dust generating activities.

The contractor has provided the 3 sides enclosure when conducting the dust generating activities.

Noise

N/A

There was no observation in the reporting period.

N/A

Water Quality

N/A

There was no observation in the reporting period.

N/A

Ecology

N/A

There was no observation in the reporting period.

N/A

Landscape and Visual

N/A

There was no observation in the reporting period.

N/A

Waste/ Chemical Management

29 Dec 2022

No drip tray is provided for chemical containers. 

The contractor has removed the chemical containers.

5 Jan 2023

General refuses were found in the TBM tunnel (Westbound).

The contractor has removed the general refuses.

Permits /Licences

13 Jan 2023

The first 4 pages of the EP pasted on the hoarding was missing

The contractor has re-pasted the first 4 pages of the EP on the hoarding.

         Implementation Status of Event and Action Plans

10.5          The Event and Action Plans for air quality, construction noise, and landscape and visual are presented in Appendix J.

Air Quality Monitoring

·         One (1) Action and no Limit Level exceedance for 24-hour TSP monitoring was recorded.

 

Construction Noise Monitoring

·        No Action / Limit Level exceedance was recorded in the reporting month.

                       

Landscape and Visual

·         No landscape and visual non-conformity was recorded.

 

Status of Required Submission under Environmental Permit

10.6          According the Section 11.3.2.1 (c) of the EM&A Manual (AEIAR-174/2013), status of required submission under EP-451/2013 during the reporting period are summarized in Table 10.2.

Table 10.2    Status of Required Submission under Environmental Permit

EP Condition

Submission

Submission Date

EP-451/2013

Condition 2.3

Management Organization of Main Construction Companies

20 January 2020

Condition 2.4

Design Drawing of the Project

20 January 2020

Condition 2.5

Landscape Mitigation Plan (Rev. F)

25 November 2022

Condition 2.10 (a)

Supplementary Contamination Assessment Plan

18 December 2015

Condition 2.10 (b)

Supplementary Contamination Assessment Report

6 December 2016

Condition 3.3

Updated Baseline Monitoring Report

03 November 2020

Condition 3.4

Monthly EM&A Report (December 2022)

14 January 2023

 

 

 

11    Environmental non-conformance

Summary of Complaint, Warning, Notification of any Summons and Successful Prosecution

11.1          The summaries of environmental complaint, warning, summon and notification of successful prosecution for the Project is presented in Appendix L.

Summary of Exceedance

11.2          The summary of exceedance record in the reporting month is shown in Appendix M.

11.3          No non-conformity was recorded for landscape and visual inspections conducted in the reporting month.

12    future Key issues

Tentative construction programmes for the next three months are provided in Appendix N.

12.1           Major site activities undertaken for the coming months and the key environmental issues are summarized as follows:

Table 12.1    Summary Table for Site Activities and the Key Environmental Issues in the next Reporting Period

Contract No. and Project Title

Site Activities (February 2023)

Key Environmental Issues

ED/2018/04 - Trunk Road T2 and Infrastructure Works for Developments at South Apron

1)      Depressed Road – Portal Structure, Capping Beam

2)      Depressed Road – DPR/SUS connection

3)      West Ventilation Building – Basement 2 Construction

4)      Launching Shaft / Cut & Cover RC Structure

5)      Westbound TBM Tunnelling

6)      Eastbound TBM Tunnelling

7)      EB Service Gallery installation

8)      WB Service Gallery installation

9)      CP Tympanum construction

10)  CP TBM Excavation

11)  SUS Remaining Internal Wall

12)  SUS OHVD in-situ Slab

13)  SUS Fire Board Crown

14)  SUS Fire Board Road Level

15)  Sub-sea Corbel Construction

16)  Sub-sea Crown Fire Board

17)  West Ventilation Building- Platform removal

18)  Tunnel Segment delivery

·         Wheel washing bay at site exits;

·         Temporary noise barriers for PMEs;

·         Sedimentation tank for settling muddy water; and

·         Make sure open stockpiles are covered during rainstorm.

 

ED/2020/03 - Trunk Road T2 - Traffic Control And Surveillance System (TCSS) and Associated Works(1)

 

 

 

N/A

Notes:

(1): No major construction work was undertaken during reporting month.

N/A: Not applicable

 

Monitoring Schedule

12.2          The tentative environmental monitoring schedule for the next three months are shown in Appendix B.

13    Conclusions and recommendations

Conclusions

13.1          This is the 35th Monthly EM&A Report which presents the EM&A works undertaken during the reporting month in accordance with the EM&A Manual (AEIAR-174/2013) and the requirement under EP.

Air Quality Monitoring

13.2          One (1) Action and no Limit Level exceedance was recorded for 24-hour TSP monitoring in the reporting month.

Construction Noise Monitoring 

13.3          No Limit Level exceedance was recorded for day-time construction noise monitoring in the reporting month.

13.4          No Action Level exceedance was recorded in the reporting month.

Site Audit                     

13.5          4 (Four) ET joint weekly environmental site inspections were conducted for the Contact No. ED/2018/04 in the reporting month.

13.6          1 (One) ET joint environmental site inspections were conducted for the Contact No. ED/2020/03 in the reporting month.

Complaint, Notification of Summons and Successful Prosecution

13.7          No environmental complaint was received in the reporting month. No notifications of summons and successful prosecutions were received in the reporting month.

Recommendations

13.8          According to the environmental audit performed in the reporting month, the following recommendations was made:

ED/2018/04

 

Air Quality

·          NRMM label shall be displayed at a conspicuous position of the regulated machines on site and make sure they are not damaged.

·          Spraying water and 3 sides enclosure is needed when conducting the dust generating activities (i.e breaking the concrete).

        

 

Waste / Chemical Management

·          The C&D waste should be segregated and stored in the separate containers or skip, the waste in the skips should be cleared regularly, the site and surrounding should be kept tidy and litter free.

·          The drip tray should be provided for the chemical container to avoid the chemical leakage.

 

ED/2020/03

 

Permits/ Licences

·          The valid EP should be pasted on the site entrance and ensure they are not damaged.