table of Contents

Executive Summary                                                              

1                      Introduction                                                                           

1.1                   Background                                                                            

1.2                   Scope of Report                                                                    

1.3                   Organization Structure                                                   

1.4                   Summary of Construction Works                                

2                      EM&A Results                                                                          

2.1                   Air quality                                                                               

2.2                   Landfill Gas Hazard Monitoring                                   

2.3                   EM&A Site Inspection                                                           

2.4                   Waste Management Status                                              

2.5                   Environmental Licenses and Permits                         

2.6                   Implementation Status of Environmental Mitigation Measures   

2.7                   Summary of Exceedances of the Environmental Quality Performance Limit                                                                                             

2.8                   Summary of Complaints, Notification of Summons and Successful Prosecutions                                                                          

3                      Future Key Issues                                                                 

3.1                   Construction Activities for the Coming Month     

3.2                   Key Issues for the Coming Month                                 

4                      Conclusions and recommendations                           

4.1                   Conclusions                                                                            

 


List of Appendices

Appendix A     Project Organization for Environmental Works

Appendix B     Construction Programmes

Appendix C     Implementation Schedule of Environmental Mitigation Measures (EMIS)

Appendix D     Summary of Action and Limit Levels

Appendix E     Event Action Plan

Appendix F     EM&A Monitoring Schedule

Appendix G     Calibration Certificate of Monitoring Equipment

Appendix H      Landfill Gas Monitoring Results and Graphical Presentation

Appendix I       Monthly Summary of Waste Flow Table

Appendix J      Cumulative Statistics on Exceedances, Complaints, Notifications of Summons and Successful Prosecutions

 

 

Executive Summary

Under Contract No. HY/2017/10, Gammon Construction Limited (GCL) is commissioned by the Highways Department (HyD) to undertake Northern Connection Tunnel Buildings, Electrical and Mechanical Works of the Tuen Mun – Chek Lap Kok Link Project (TM-CLK Link Project) while AECOM Asia Company Limited was appointed by HyD as the Engineer.  For implementation of the environmental monitoring and audit (EM&A) programme under the Contract, ERM-Hong Kong, Limited (ERM) has been appointed as the Environmental Team (ET) in accordance with Environmental Permit No. EP-354/2009/A.  Ramboll Hong Kong Ltd. was employed by HyD as the Independent Environmental Checker (IEC) and Environmental Project Office (ENPO).  Subsequent applications for variation of environmental permits (VEP), EP-354/2009/B, EP-354/2009/C and EP-354/2009/D, were granted on 28 January 2014, 10 December 2014 and 13 March 2015, respectively.  

The construction phase of the Project commenced on 7 June 2018 and will tentatively be completed by 2021.  The impact monitoring of the EM&A programme, including air quality and environmental site inspections, were commenced on 7 June 2018.   

This is the Eighth Monthly EM&A report presenting the EM&A works carried out during the period from 1 to 31 January 2019 for the Contract No. HY/2017/10 Northern Connection Tunnel Buildings, Electrical and Mechanical Works (the “Project”) in accordance with the Updated EM&A Manual of the TM-CLK Link Project.  As informed by the Contractor, major activities in the reporting period included:

Land-based Works

·         Bar bending, timber formwork and concreting and Architectural Builder's Work and Finishes at Toll Control Building;

·         Electrical and Mechanical Works at Ventilation Plant Room;

·         Electrical and Mechanical Works at North Ventilation Building;

·         Building Structure at Administration Building;

·         Building Structure at Maintenance Depot;

·         Socket H-piling at Fire Services Department Building;

·         Socket H-piling at Customs and Excise Department Building; and

·         Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Kiosk N2.                                                                                        


A summary of monitoring and audit activities conducted in the reporting period is listed below ([1]):

24-hour TSP Monitoring                         10 sessions

1-hour TSP Monitoring                           10 sessions

Landfill Gas Hazard Monitoring              6 days

Joint Environmental Site Inspection       4 sessions

Summary of Breaches of Action/Limit Levels

Breaches of Action and Limit Levels for Air Quality

Five (5) Action Level and One (1) Limit Level exceedances for 1-hour TSP were recorded by the Environmental Team of Contract No. HY/2012/08 during the reporting period.

Breaches of Action and Limit Levels for Landfill Gas Hazard Monitoring

No exceedance of Action and Limit Levels was recorded for landfill gas hazard monitoring in the reporting month.

Environmental Complaints, Non-compliance & Summons

There was no environmental complaint, notification of summons or successful prosecution recorded in the reporting period.

Reporting Change

There was no reporting change in the reporting period.

Upcoming Works for the Next Reporting Month

Works to be undertaken in the next monitoring period of February 2019 include the following:

Land-based Works

·         Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Toll Control Building;

·         Electrical and Mechanical Works at Ventilation Plant Room;

·         Electrical and Mechanical Works at North Ventilation Building;

·         Building Structure at Administration Building;

·         Building Structure at Maintenance Depot;

·         Excavation at Fire Services Department Building;

·         Excavation at Customs and Excise Department Building; and

·         Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Kiosk N2.

Future Key Issues

Potential environmental impacts arising from the above upcoming construction activities in the next reporting month of February 2019 are mainly associated with dust and waste management issues.


1                                          Introduction

1.1                                   Background

According to the findings of the Northwest New Territories (NWNT) Traffic and Infrastructure Review conducted by the Transport Department, Tuen Mun Road, Ting Kau Bridge, Lantau Link and North Lantau Highway would be operating beyond capacity after 2016.  This forecast has been based on the estimated increase in cross boundary traffic, developments in the Northwest New Territories (NWNT), and possible developments in North Lantau, including the Airport developments, the Lantau Logistics Park (LLP) and the Hong Kong – Zhuhai – Macao Bridge (HZMB).  In order to cope with the anticipated traffic demand, two new road sections between NWNT and North Lantau – Tuen Mun – Chek Lap Kok Link (TM-CLKL) and Tuen Mun Western Bypass (TMWB) are proposed.

An Environmental Impact Assessment (EIA) of TM-CLKL (the Project) was prepared in accordance with the EIA Study Brief (No. ESB-175/2007) and the Technical Memorandum of the Environmental Impact Assessment Process (EIAO-TM).  The EIA Report was submitted under the Environmental Impact Assessment Ordinance (EIAO) in August 2009.  Subsequent to the approval of the EIA Report (EIAO Register Number AEIAR-146/2009), an Environmental Permit (EP-354/2009) for TM-CLKL was granted by the Director of Environmental Protection (DEP) on 4 November 2009, and EP variation (VEP) (EP-354/2009/A) was issued on 8 December 2010.  Subsequent applications for variation of environmental permits (VEPs), EP-354/2009/B, EP-354/2009/C and EP-354/2009/D, were granted on 28 January 2014, 10 December 2014 and 13 March 2015, respectively.

Under Contract No. HY/2017/10, Gammon Construction Limited (GCL) is commissioned by the Highways Department (HyD) to undertake the Northern Connection Tunnel Buildings, Electrical and Mechanical Works of TM-CLKL while AECOM Asia Company Limited was appointed by HyD as the Engineer.  For implementation of the environmental monitoring and audit (EM&A) programme under the Contract, ERM-Hong Kong, Limited (ERM) has been appointed as the Environmental Team (ET).  Ramboll Hong Kong Ltd. was employed by HyD as the Independent Environmental Checker (IEC) and Environmental Project Office (ENPO).

The construction phase of the Contract commenced on 7 June 2018 and will be tentatively completed by 2021.  The impact monitoring phase of the EM&A programme, including air quality and environmental site inspections, commenced on 7 June 2018. 

The general layout plan of the Contract components is presented in Figures 1.1 & 1.2a to c.

                                  

1.2                                   Scope of Report

This is the Eighth Monthly EM&A Report under the Contract No. HY/2017/10 Tuen Mun – Chek Lap Kok Link – Northern Connection Tunnel Buildings, Electrical and Mechanical Works.  This report presents a summary of the environmental monitoring and audit works in January 2019.

1.3                                   Organization Structure

The organization structure of the Contract is shown in Appendix 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

Fax

HyD (Highways Department)

Project Coordinator

Joseph Lee

2762 4958

3188 6614

 

Senior Engineer

Cheng Pan

 

2762 3383

3188 6614

ER

(AECOM Asia Company Limited)

 

Principle Resident Engineer

S. W. Fok

2293 6200

2293 6300

 

Resident Engineer

 

Desmond Fung

2293 6200

2293 6300

ENPO / IEC

(Ramboll Hong Kong Ltd.)

ENPO Leader

 

Y.H. Hui

3465 2850

3465 2899

IEC

 

Dr. F.C. Tsang

3465 2851

3465 2899

Contractor

(Gammon Construction Limited)

Site Agent

 

Kenneth Tai

9039 4723

-

Environmental Officer

Max Poon

9103 6303

-

 

 

 

 

 

ET (ERM-HK)

ET Leader

Dr. Jasmine Ng

2271 3311

2723 5660

1.4                                   Summary of Construction Works

The construction phase of the Contract commenced on 7 June 2018.  The three-month rolling construction programme is shown in Appendix B.

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

Land-based Works

·         Bar bending, timber formwork and concreting and Architectural Builder's Work and Finishes at Toll Control Building;

·         Electrical and Mechanical Works at Ventilation Plant Room;

·         Electrical and Mechanical Works at North Ventilation Building;

·         Building Structure at Administration Building;

·         Building Structure at Maintenance Depot;

·         Socket H-piling at Fire Services Department Building;

·         Socket H-piling at Customs and Excise Department Building; and

·         Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Kiosk N2.                                                                                        

The locations of the construction activities are shown in Figure 1.3.  The Environmental Sensitive Receivers in the vicinity of the Project are shown in Figure 1.4.

The implementation schedule of environmental mitigation measures is presented in Appendix C.

Figure 1.3      Locations of Major Construction Activities in the Reporting Month

 

 

2                                          EM&A Results

The EM&A programme required environmental monitoring for air quality and environmental site inspections for air quality, water quality and waste management.  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

In accordance with the Updated EM&A Manual and the Enhanced TSP Monitoring Plan, impact 1-hour TSP monitoring was conducted three (3) times every six (6) days and impact 24-hour TSP monitoring was carried out once every six (6) days when the highest dust impact was expected.  1-hr and 24-hr TSP monitoring frequency was increased to three times per day every three days and daily every three days, respectively, as excavation works for launching shaft under Contract No. HY/2012/08 Tuen Mun-Chek Lap Kok Link – Northern Connection Sub-sea Tunnel Section commenced on 24 October 2014.

Results of air quality monitoring were adopted from the published EM&A data of Contract No. HY/2012/08 Tuen Mun-Chek Lap Kok Link – Northern Connection Sub-sea Tunnel Section ([2]).

The Action and Limit Levels of the air quality monitoring were adopted from the published EM&A reports of Contract No. HY/2012/08 Tuen Mun-Chek Lap Kok Link – Northern Connection Sub-sea Tunnel Section ([3]).  The Action and Limit Levels are provided in Appendix D.

The locations of the monitoring stations overlapped with Contract No. HY/2012/08 are shown in Figure 2.1 and presented in Table 2.1.

Table 2.1        Locations of Impact Air Quality Monitoring Stations and its Corresponding Monitoring Requirements

Monitoring Station

Monitoring Dates

Location

Description

Parameters & Frequency

ASR1

2, 5, 8, 11, 14, 17, 20 ,23, 26 and 29 January 2019

Tuen Mun Fireboat Station

 

Office

TSP monitoring

Ÿ  1-hour Total Suspended Particulates (1-hour TSP, µg/m3), 3 times in every 6 days

Ÿ  24-hour Total Suspended Particulates (24-hour TSP, µg/m3), daily for 24-hour in every 6 days

Enhanced TSP monitoring (commenced on 24 October 2014 under Contract No. HY/2012/08)

Ÿ  1-hour Total Suspended Particulates (1-hour TSP, µg/m3), 3 times in every 3 days

Ÿ  24-hour Total Suspended Particulates (24-hour TSP, µg/m3), daily for 24-hour in every 3 days

ASR5

 

Pillar Point Fire Station

 

Office

AQMS1

 

Previous River Trade Golf

 

Bare ground

ASR6

 

Butterfly Beach Laundry

 

Office

ASR10

 

Butterfly Beach Park

Recreational uses

2.1.2                        Results and Observations

Results of air quality monitoring were adopted from the published EM&A data of Contract No. HY/2012/08 Tuen Mun-Chek Lap Kok Link – Northern Connection Sub-sea Tunnel Section ([4]).

Five (5) Action Level and one (1) Limit Level exceedances for 1-hour TSP on 8, 11, 17 and 26 January 2019 were recorded by the Environmental Team of Contract No. HY/2012/08 during the reporting period.  The exceedances were considered not related to this Contract upon further investigation and the investigation report is presented in Appendix G.   No action is required to be undertaken in accordance with the Event Action Plan as presented in Appendix E

No exceedance of Action and Limit Levels for 24-hour TSP was recorded in the reporting month.

2.2                                   Landfill Gas Hazard Monitoring

In accordance with the Updated EM&A Manual of the TM-CLK Link Project, landfill gas hazard monitoring should be perform to ensure that the works area at Pillar Point Valley (PPV) Landfill is free of landfill gas during any excavations works.  A total of 6 days of landfill gas hazard monitoring was conducted at Toll Control Building prior to the excavation works during 3 to 9 January 2019 (Appendix F). 

The landfill gas hazard monitoring was conducted in accordance to the Updated EM&A Manual with a Altair 5X Gas Detector.  The calibration certificate for the equipment is presented in Appendix G.

The Action and Limit Levels of the landfill gas hazard monitoring were adopted from the Undated EM&A Manual of the TM-CLK Link Project and are provided in Appendix D.

2.2.1                        Results and Observations

Results for landfill gas hazard monitoring are summarized in Table 2.2 and the monitoring data is provided in Appendix H.

 

No exceedance of Action and Limit Levels for methane, oxygen and carbon dioxide was recorded in the reporting month.

Table 2.2        Summary of Landfill Gas Hazard Monitoring Results in the Reporting Period

 

Average (%)

Range (%)

Action / Limit Level (%)

Methane

0

0

10 / 20

Oxygen

20.8

20.7-20.8

19 / 18

Carbon Dioxide

0.08

0.07-0.08

0.5 / 1.5

2.3                                   EM&A Site Inspection

Site inspections were carried out on a weekly basis to monitor the implementation of proper environmental pollution control and mitigation measures under the Contract.  In the reporting month, four (4) site inspections were carried out on 4, 11, 18 and 25 January 2019.

Key observations and recommendations during the site inspections in this reporting period are summarized in Table 2.3.

Table 2.3        Specific Observations and Recommendations during the Weekly Site Inspection in this Reporting Month

Inspection Date

Observations

Recommendations/ Remarks

4 January 2019 2019

Fire Services Department Building & Customs and Excise Department Building

Ÿ   Chemical containers should be placed in drip tray.

Ÿ   Unnecessary pipes were observed connected to the Aqua Sed.

Fire Services Department Building & Customs and Excise Department Building

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

Ÿ   The Contractor was reminded to remove unnecessary pipes connected to the Aqua Sed.

11 January 2019

North Ventilation Building

Ÿ   Accumulated waste was observed in the waste bin.

North Ventilation Building

Ÿ   The Contractor was reminded to clear accumulated refuse in waste bin.

 

18 January 2019

Fire Services Department Building

Ÿ   Surface runoff was observed during piling.

 

North Ventilation Building

Ÿ   Oil leakage was observed under machinery.

Fire Services Department Building

Ÿ   The Contractor was reminded to prevent surface runoff during piling.

 

North Ventilation Building

Ÿ   The Contractor was reminded to provide drip tray under machinery.

25 January 2019

Custom and Excise Department Building

Ÿ   Accumulated rubbish in the waste skip should be cleared regularly.

Custom and Excise Department Building

Ÿ   The Contractor was reminded to clear accumulated rubbish in the waste skip.

 

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

2.4                                   Waste Management Status

The Contractor had submitted application form for registration as chemical waste producer under the Contract.  Sufficient numbers of receptacles were available for general refuse collection and sorting.

Wastes generated during this reporting period included mainly construction wastes (inert and non-inert).  Reference has been made to the waste flow table prepared by the Contractor (Appendix I).  The quantities of different types of wastes are summarized in Table 2.4.

Table 2.4        Quantities of Different Waste Generated in the Reporting Month

Month/Year

Inert C&D Materials (a)  (m3)

Inert Construction Waste Re-used

(m3)

Non-inert Construction Waste (b) (kg)

Imported Fill (m3)

Recyclable Materials (c)  (kg)

Chemical Wastes (kg)

 

January 2019

1,939

0

74,680

0

0

 

 

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, timber and others.

 

The Contractor was advised to properly maintain on site C&D materials and waste collection, sorting and recording system, dispose of C&D materials and wastes at designated ground and maximize reuse/ recycle of C&D materials and wastes.  The Contractor was also reminded to properly maintain the site tidiness and dispose of the wastes accumulated on site regularly and properly.

For chemical waste containers, the Contractor was reminded to treat properly and store temporarily in designated chemical waste storage area on site in accordance with the Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes.

2.5                                   Environmental Licenses and Permits

The status of environmental licensing and permit is summarized in Table 2.5 below.


Table 2.5        Summary of Environmental Licensing and Permit Status

License/ Permit

License or Permit No.

Date of Issue

Date of Expiry

License/ Permit Holder

Remarks

Environmental Permit

EP-354/2009/D

13 March 2015

N/A

HyD

Tuen Mun- Chek Lap Kok Link

APCO Construction Dust Notification

433493

14 May 2018

N/A

GCL

For Tuen Mun working area

Construction Waste Billing Account

7030836

15 May 2018

N/A

GCL

N/A

Chemical Waste Producer Registration

5213-422-G2827-01

13 June 2018

N/A

GCL

N/A

WPCO Licence for Buildings at C2 area

WT00031783-2018

22 October 2018

31 October 2023

GCL

Sampling Frequency: Bimonthly

WPCO Licence for Buildings at C3 area

WT00032062-2018

30 October 2018

31 October 2023

GCL

Sampling Frequency: Quarterly

Construction Noise Permit

GW-RW0560-18

28 December 2018

18 June 2019

GCL

For Toll Control Building, Administration Building, Maintenance Depot and WA18

Construction Noise Permit

GW-RW0037-19

28 January 2019

23 July 2019

GCL

For Toll Control Building, Administration Building, Maintenance Depot and WA18

 

2.6                                   Implementation Status of Environmental Mitigation Measures

In response to the site audit findings, the Contractors carried out all corrective actions.

A summary of the Implementation Schedule of Environmental Mitigation Measures (EMIS) is presented in Appendix C. The necessary mitigation measures relevant to this Contract were implemented properly.

The landscape and visual (L&V) mitigation measures were also monitored on weekly basis in the reporting period.  The monitoring status is summarized in Appendix C.

2.7                                   Summary of Exceedances of the Environmental Quality Performance Limit

Five (5) Action Level and one (1) Limit Level exceedances for 1-hour TSP were recorded by the Environmental Team of Contract No. HY/2012/08 during the reporting period.  The exceedances were considered not related to this Contract upon further investigation and the investigation report is presented in Appendix J.   No action is required to be undertaken in accordance with the Event Action Plan as presented in Appendix E

No exceedance of 24-hour TSP was recorded in this reporting month.

Cumulative statistics are provided in Appendix J.

2.8                                   Summary of Complaints, Notification of Summons and Successful Prosecutions

The Environmental Complaint Handling Procedure is provided in Figure 2.2.

There was no environmental complaint, notification of summons or successful prosecution recorded in the reporting period.

Statistics on complaints, notifications of summons, successful prosecutions are summarized in Appendix J.

3                                          Future Key Issues

3.1                                   Construction Activities for the Coming Month

As informed by the Contractor, the major works for the Project in February 2019 will be:

Land-based Works

·         Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Toll Control Building;

·         Electrical and Mechanical Works at Ventilation Plant Room;

·         Electrical and Mechanical Works at North Ventilation Building;

·         Building Structure at Administration Building;

·         Building Structure at Maintenance Depot;

·         Excavation at Fire Services Department Building;

·         Excavation at Customs and Excise Department Building; and

·         Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Kiosk N2.

3.2                                   Key Issues for the Coming Month

Potential environmental impacts arising from the above upcoming construction activities in the next reporting month of February2019 are mainly associated with dust and waste management issues. 

 

4                                          Conclusions and recommendations

4.1                                   Conclusions

This Eighth Monthly EM&A Report presents the findings of the EM&A activities undertaken during the period from 1 to 31 January 2019, in accordance with the Updated EM&A Manual and the requirements of EP-354/2009/D.

Air quality (including 1-hour TSP and 24-hour TSP) was carried out in this reporting month.

Five (5) Action Level and one (1) Limit Level exceedances for 1-hour TSP were recorded by the Environmental Team of Contract No. HY/2012/08 during the reporting period.  The exceedances were considered not related to this Contract upon further investigation and the investigation report is presented in Appendix G.   No action is required to be undertaken in accordance with the Event Action Plan as presented in Appendix E

No exceedance of Action and Limit Levels for 24-hour TSP was recorded in the reporting month.

No exceedance of Action and Limit Levels was recorded for landfill gas hazard monitoring in the reporting month.

Environmental site inspection was carried out four (4) times in January 2019.  Remedial actions recommended for the deficiencies identified during the site audits were properly implemented by the Contractor.

There was no environmental complaint, notification of summons or successful prosecution recorded in the reporting period.

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])               ET justification on the Contract Specific Environmental Monitoring and Audit activities under this Project was submitted to ENPO on 11 September 2018

([2])                Published EM&A data for impact air quality monitoring by Contract No. HY/2012/08 are available at: http://www.hzmbenpo.com/

([3])               Published EM&A reports of Contract No. HY/2012/08 are available at: http://www.hzmbenpo.com/

([4])             Published EM&A data for impact air quality monitoring by Contract No. HY/2012/08 are available at: http://www.hzmbenpo.com/