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 Contract 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 Tenth Quarterly EM&A Report presenting the EM&A works carried out during the period from 1 September 2020 to 30 November 2020 for the Contract No. HY/2017/10 Northern Connection Tunnel Buildings, Electrical and Mechanical Works (the “Contract”) 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:

September 2020

Land-based Works

· Handover Inspection at Main Control Building;

· Electrical and Mechanical Works at Ventilation Plant Room;

· Handover Inspection at North Ventilation Building;

· Handover Inspection at Administration Building;

· Handover Inspection at Maintenance Depot;

· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Fire Services Department Building;

· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Customs and Excise Department Building;

· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at N1;

· Electrical and Mechanical Works at Kiosk N2;

· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at the Tunnel;

· Electrical and Mechanical Works and Architectural Builder’s Work and Finishes at underpass at C3 area;

· Handover Inspection at Satellite Control Building;

· Electrical and Mechanical Works and Architectural Builder’s Work and Finishes at Kiosk S2;

· Handover Inspection at South Ventilation Building; and

· Soil Mix and Landscape Works at Northern Landfall and Southern Landfall.

October 2020

Land-based Works

· Handover Inspection at Main Control Building;

· Handover Inspection at Ventilation Plant Room;

· Handover Inspection at North Ventilation Building;

· Handover Inspection at Administration Building;

· Handover Inspection at Maintenance Depot;

· Handover Inspection at Fire Services Department Building;

· Handover Inspection at Customs and Excise Department Building;

· Handover Inspection at N1;

· Handover Inspection at Kiosk N2;

· T&C and FSI at the Tunnel;

· Handover Inspection at underpass at C3 area;

· Handover Inspection at Satellite Control Building;

· Handover Inspection at Kiosk S2;

· Handover Inspection at South Ventilation Building; and

· Landscape Works at Northern Landfall and Southern Landfall.

November 2020

Land-based Works

· Handover Inspection at Main Control Building;

· Handover Inspection at Ventilation Plant Room;

· Handover Inspection at North Ventilation Building;

· Handover Inspection at Administration Building;

· Handover Inspection at Maintenance Depot;

· Handover Inspection at Fire Services Department Building;

· Handover Inspection at Customs and Excise Department Building;

· Handover Inspection at N1;

· Handover Inspection at Kiosk N2;

· T&C and FSI at the Tunnel;

· Handover Inspection at underpass at C3 area;

· Handover Inspection at Satellite Control Building;

· Handover Inspection at Kiosk S2;

· Handover Inspection at South Ventilation Building; and

· Landscape Works at Northern Landfall and Southern Landfall.

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

24-hour TSP Monitoring 19 sessions

1-hour TSP Monitoring 19 sessions

Landfill Gas Hazard Monitoring 75 days

Joint Environmental Site Inspection 13 sessions

Summary of Breaches of Action/Limit Levels

Breaches of Action and Limit Levels for Air Quality

Breaches of Action Level for Landfill Gas Hazard Monitoring

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

Environmental Complaints, Non-compliance & Summons

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

Reporting Change

Landscape and visual monitoring for 24-month establishment period conducted by Contract No. HY/2012/07 and HY/2013/12 was reported in the Thirtieth EM&A report for this Contract.

Upcoming Works for the Next Reporting Period

Works to be undertaken in the coming quarter include the following:

December 2020

Land-based Works

· Handover Inspection at Main Control Building;

· Handover Inspection at Ventilation Plant Room;

· Handover Inspection at North Ventilation Building;

· Handover Inspection at Administration Building;

· Handover Inspection at Maintenance Depot;

· ABWF Works at Fire Services Department Building;

· External cladding & louvre installation, E&M works and final finishing works at Customs and Excise Department Building;

· Handover Inspection at Kiosk N1;

· Handover Inspection at Kiosk N2;

· Handover Inspection at the Tunnel;

· Handover Inspection at C3 area;

· Handover Inspection at Satellite Control Building;

· Handover Inspection at Kiosk S2;

· Handover Inspection at South Ventilation Building; and

· Handover Inspection at Northern Landfall and Southern Landfall.

January 2021

Land-based Works

· Architectural Builder’s Work and Finishes Works and Handover Inspection at Fire Services Department Building; and

· External cladding & luvre installation, E&M works, final finishing works and Handover Inspection at Customs and Excise Department Building.

February 2021

Land-based Works

· Architectural Builder’s Work and Finishes Works and Handover Inspection at Fire Services Department Building; and

· E&M works, Final finishing works and Handover Inspection at Customs and Excise Department Building.

Future Key Issues

Potential environmental impacts arising from the above upcoming construction activities in the coming quarterly period are mainly associated with waste management and landfill gas monitoring 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 Tenth Quarterly 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 from 1 September 2020 to 30 November 2020.

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
ENPO / IEC (Ramboll Hong Kong Ltd.)	IEC	Manson Yeung	9700 6767	3465 2899

Contractor (Gammon Construction Limited)	Site Agent	H. H. Lee	6096 6281	-
	Environmental Officer	Phoebe Ng	9869 1105	-

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 rolling construction programme for the period of June to August 2020 is shown in Appendix B.

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

September 2020

Land-based Works

· Handover Inspection at Main Control Building;

· Electrical and Mechanical Works at Ventilation Plant Room;

· Handover Inspection at North Ventilation Building;

· Handover Inspection at Administration Building;

· Handover Inspection at Maintenance Depot;

· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Fire Services Department Building;

· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Customs and Excise Department Building;

· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at N1;

· Electrical and Mechanical Works at Kiosk N2;

· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at the Tunnel;

· Electrical and Mechanical Works and Architectural Builder’s Work and Finishes at underpass at C3 area;

· Handover Inspection at Satellite Control Building;

· Electrical and Mechanical Works and Architectural Builder’s Work and Finishes at Kiosk S2;

· Handover Inspection at South Ventilation Building; and

· Soil Mix and Landscape Works at Northern Landfall and Southern Landfall.

October 2020

Land-based Works

· Handover Inspection at Main Control Building;

· Handover Inspection at Ventilation Plant Room;

· Handover Inspection at North Ventilation Building;

· Handover Inspection at Administration Building;

· Handover Inspection at Maintenance Depot;

· Handover Inspection at Fire Services Department Building;

· Handover Inspection at Customs and Excise Department Building;

· Handover Inspection at N1;

· Handover Inspection at Kiosk N2;

· T&C and FSI at the Tunnel;

· Handover Inspection at underpass at C3 area;

· Handover Inspection at Satellite Control Building;

· Handover Inspection at Kiosk S2;

· Handover Inspection at South Ventilation Building; and

· Landscape Works at Northern Landfall and Southern Landfall.

November 2020

Land-based Works

· Handover Inspection at Main Control Building;

· Handover Inspection at Ventilation Plant Room;

· Handover Inspection at North Ventilation Building;

· Handover Inspection at Administration Building;

· Handover Inspection at Maintenance Depot;

· Handover Inspection at Fire Services Department Building;

· Handover Inspection at Customs and Excise Department Building;

· Handover Inspection at N1;

· Handover Inspection at Kiosk N2;

· T&C and FSI at the Tunnel;

· Handover Inspection at underpass at C3 area;

· Handover Inspection at Satellite Control Building;

· Handover Inspection at Kiosk S2;

· Handover Inspection at South Ventilation Building; and

· Landscape Works at Northern Landfall and Southern Landfall.

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

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.

Informed by the Environmental Team of Contract No. HY/2012/08 Tuen Mun-Chek Lap Kok Link – Northern Connection Sub-sea Tunnel Section, excavation works for lauching shaft were completed and notification of change on air quality monitoring frequency was submitted to EPD on 14 September 2020. 1-hr and 24-hr TSP monitoring frequency was changed to three times per day every six days and daily every six days, respectively, since 14 September 2020.

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, 23 and 29 September 2020 5, 9, 15, 21 and 27 October 2020 2, 6, 12, 18, 24 and 30 November 2020	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]).

Eight (8) Action Level and two (2) Limit Level exceedances for 1-hour TSP and two (2) Action Level exceedances for 24-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 I. No action is required to be undertaken in accordance with the Event Action Plan as presented in Appendix E.

2.2 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. Thirteen (13) site inspections were carried out in the reporting period on 4, 11, 18, 25 and 30 September 2020, 9, 16, 23 and 30 October 2020 and 6, 13, 20 and 27 November 2020.

Key observations and recommendations during the site inspections in this reporting period are summarized in Table 2.2.

Table 2.2 Specific Observations and Recommendations during the Weekly Site Inspection in this Reporting Period

Inspection Date	Observations	Recommendations/ Remarks
4 September 2020	Southern Landfall Ÿ A chemical did not have clear identification label.	Southern Landfall Ÿ The Contractor was reminded to identify and clearly label the chemical.
11 September 2020	Southern Landfall Ÿ Drip tray was observed full of retained water. Ÿ Chemical container was observed not placed on drip tray.	Southern Landfall Ÿ The Contractor was reminded to cleanup the drip tray. Ÿ The Contractor was reminded to place chemical containers on drip tray.
18 September 2020	South Ventilation Building Ÿ Accumulated residuals were observed on site.	South Ventilation Building Ÿ The Contractor was reminded to keep better housekeeping.
25 September 2020	Southern Landfall Ÿ The stockpiles were not covered on site.	Southern Landfall Ÿ The Contractor was reminded to cover the stockpiles.
30 September 2020	Fire Services Department Building Ÿ Chemical containers were not placed on the drip tray. Customs and Excise Department Building Ÿ Cement bags were not placed and covered properly. Southern Landfall Ÿ Improper disposal of waste was observed. Ÿ Mud was observed on the road.	Fire Services Department Building Ÿ The Contractor was reminded to place chemical containers on drip tray. Customs and Excise Department Building Ÿ The Contractor was reminded to cover the cement bags. Southern Landfall Ÿ The Contractor was reminded to dispose the recycling materials at designated location. Ÿ The Contractor was reminded to clean the mud on the road and avoid carrying the mud to public road.
9 October 2020	Satellite Control Building Ÿ Chemical was observed not placed in trip tray. Ÿ Cement was not properly covered. Ÿ Accumulated residual was observed on site. Tunnel Ÿ Chemical was observed not placed in trip tray. Container Village Ÿ Accumulated residual was observed on site. Ÿ Contstruction site should be watered regularly to reduce dust emission.	Satellite Control Building Ÿ The Contractor was reminded to place chemical in trip tray. Ÿ The Contractor was reminded to cover the cement properly. Ÿ The Contractor was reminded to clear accumulated residuals. Tunnel Ÿ The Contractor was reminded to place chemical in trip tray. Container Village Ÿ The Contractor was reminded to clear accumulated residuals. Ÿ The Contractor was reminded to provide regular watering.
16 October 2020	Administration Building Ÿ Accumulated general refuse was observed on site.	Administration Building Ÿ The Contractor was reminded to clear accumulated refuse.
23 October 2020	Northern Landfall Ÿ Chemicals were observed not placed in trip tray. Ÿ General residuals were observed on site. Satellite Control Building Ÿ Chemicals were observed not placed in trip tray. Ÿ Excessive dust emission was observed on site. Administration Building Ÿ Chemicals were observed not placed in trip tray.	Northern Landfall Ÿ The Contractor was reminded to place chemicals in trip tray. Ÿ The Contractor was reminded to keep better housekeeping. Satellite Control Building Ÿ The Contractor was reminded to place chemicals in trip tray Ÿ The Contractor was reminded to water the road more frequently. Administration Building Ÿ The Contractor was reminded to place chemicals in trip tray.
30 October 2020	Southern Landfall Ÿ Nil.	Southern Landfall Ÿ Nil.
6 November 2020	South Ventilation Building Ÿ Accumulated residual was observed on site.	South Ventilation Building Ÿ The Contractor was reminded to keep better housekeeping.
13 November 2020	Customs and Excise Department Building Ÿ Nil.	Customs and Excise Department Building Ÿ Nil.
20 November 2020	C3 Bridge Container Village Ÿ Chemical containers without drip tray were observed on site.	C3 Bridge Container Village Ÿ The Contractor was reminded to place chemical containers in trip tray.
27 November 2020	Customs and Excise Department Building Ÿ Chemical was not placed in drip tray.	Customs and Excise Department Building Ÿ The Contractor was reminded to place chemical in trip tray.

Inspection Date

Observations

Recommendations/ Remarks

4 September 2020

Southern Landfall

Ÿ A chemical did not have clear identification label.

Southern Landfall

Ÿ The Contractor was reminded to identify and clearly label the chemical.

11 September 2020

Southern Landfall

Ÿ Drip tray was observed full of retained water.

Ÿ Chemical container was observed not placed on drip tray.

Southern Landfall

Ÿ The Contractor was reminded to cleanup the drip tray.

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

18 September 2020

South Ventilation Building

Ÿ Accumulated residuals were observed on site.

South Ventilation Building

Ÿ The Contractor was reminded to keep better housekeeping.

25 September 2020

Southern Landfall

Ÿ The stockpiles were not covered on site.

Southern Landfall

Ÿ The Contractor was reminded to cover the stockpiles.

30 September 2020

Fire Services Department Building

Ÿ Chemical containers were not placed on the drip tray.

Customs and Excise Department Building

Ÿ Cement bags were not placed and covered properly.

Southern Landfall

Ÿ Improper disposal of waste was observed.

Ÿ Mud was observed on the road.

Fire Services Department Building

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

Customs and Excise Department Building

Ÿ The Contractor was reminded to cover the cement bags.

Southern Landfall

Ÿ The Contractor was reminded to dispose the recycling materials at designated location.

Ÿ The Contractor was reminded to clean the mud on the road and avoid carrying the mud to public road.

9 October 2020

Satellite Control Building

Ÿ Chemical was observed not placed in trip tray.

Ÿ Cement was not properly covered.

Ÿ Accumulated residual was observed on site.

Tunnel

Ÿ Chemical was observed not placed in trip tray.

Container Village

Ÿ Accumulated residual was observed on site.

Ÿ Contstruction site should be watered regularly to reduce dust emission.

Satellite Control Building

Ÿ The Contractor was reminded to place chemical in trip tray.

Ÿ The Contractor was reminded to cover the cement properly.

Ÿ The Contractor was reminded to clear accumulated residuals.

Tunnel

Ÿ The Contractor was reminded to place chemical in trip tray.

Container Village

Ÿ The Contractor was reminded to clear accumulated residuals.

Ÿ The Contractor was reminded to provide regular watering.

16 October 2020

Administration Building

Ÿ Accumulated general refuse was observed on site.

Administration Building

Ÿ The Contractor was reminded to clear accumulated refuse.

23 October 2020

Northern Landfall

Ÿ Chemicals were observed not placed in trip tray.

Ÿ General residuals were observed on site.

Satellite Control Building

Ÿ Chemicals were observed not placed in trip tray.

Ÿ Excessive dust emission was observed on site.

Administration Building

Ÿ Chemicals were observed not placed in trip tray.

Northern Landfall

Ÿ The Contractor was reminded to place chemicals in trip tray.

Ÿ The Contractor was reminded to keep better housekeeping.

Satellite Control Building

Ÿ The Contractor was reminded to place chemicals in trip tray

Ÿ The Contractor was reminded to water the road more frequently.

Administration Building

Ÿ The Contractor was reminded to place chemicals in trip tray.

30 October 2020

Southern Landfall

Ÿ Nil.

Southern Landfall

Ÿ Nil.

6 November 2020

South Ventilation Building

Ÿ Accumulated residual was observed on site.

South Ventilation Building

Ÿ The Contractor was reminded to keep better housekeeping.

13 November 2020

Customs and Excise Department Building

Ÿ Nil.

Customs and Excise Department Building

Ÿ Nil.

20 November 2020

C3 Bridge Container Village

Ÿ Chemical containers without drip tray were observed on site.

C3 Bridge Container Village

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

27 November 2020

Customs and Excise Department Building

Ÿ Chemical was not placed in drip tray.

Customs and Excise Department Building

Ÿ The Contractor was reminded to place chemical in trip tray.

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

2.3 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 75 days of landfill gas hazard monitoring was conducted at Main Control Building during 1 September to 30 November 2020 during the reporting period (Appendix F).

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.

2.3.1 Results and Observations

Results for landfill gas hazard monitoring are summarized in Table 2.3 and the monitoring data is provided in Appendix G.

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

Table 2.3 Summary of Landfill Gas Hazard Monitoring Results in the Reporting Period

		Average (%)	Range (%)	Action / Limit Level (%)
September 2020	Methane	0	0	10/20
	Oxygen	20.8	20.8-20.8	19/18
	Carbon Dioxide	0.03	0.03-0.03	0.5/1.5
October 2020	Methane	0	0	10/20
October 2020	Oxygen	20.8	20.8-20.8	19/18
	Carbon Dioxide	0.03	0.03-0.03	0.5/1.5
November 2020	Methane	0	0	10/20
November 2020	Oxygen	20.8	20.8-20.8	19/18
	Carbon Dioxide	0.03	0.03-0.03	0.5/1.5

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 H). The quantities of different types of wastes are summarized in Table 2.4.

Table 2.4 Quantities of Different Waste Generated in the Reporting Period

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)
Month/Year	Inert C&D Materials (a) (m3)	Inert Construction Waste Re-used (m3)	Non-inert Construction Waste (b) (kg)		Recyclable Materials (c) (kg)	Chemical Wastes (kg)
September 2020	33	0	89,120	0	28 (d)		0
October 2020	210	0	184,460	0	28 (d)		0
November 2020	114	0	150,600	0	14		0
	Notes:
	(a) Inert construction wastes include hard rock and large broken concrete 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. (d) Updated figures were presented.

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 chemical waste properly and store the containers 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
Discharge License under WPCO for Buildings at C2 area	WT00031783-2018	22 October 2018	31 October 2023	GCL	Sampling Frequency: Bimonthly
Discharge License under WPCO for Buildings at C3 area	WT00032062-2018	30 October 2018	31 October 2023	GCL	Sampling Frequency: Quarterly
Discharge License under WPCO for Southern Landfall	WT00034878-2019	1 April 2020	31 March 2025	GCL	Sampling Frequency: Quarterly
Construction Noise Permit	GW-RW0351-20	3 August 2020	29 January 2021	GCL	For Northern Landfall and Tunnel
Construction Noise Permit	GW-RS0413-20	19 June 2020	15 December 2020	GCL	For HKBCF Area
Construction Noise Permit	GW-RW0501-20	27 October 2020	24 December 2020	GCL	For Lung Mun Road Overnight Works

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.

2.7 Summary of Exceedances of the Environmental Quality Performance Limit

No exceedance of Action and Limit Levels for methane, oxygen and carbon dioxide was recorded landfill gas hazard monitoring in the reporting period

Cumulative statistics are provided in Appendix I.

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 I.

3 Future Key Issues

3.1 Construction Activities for the Coming Quarter

As informed by the Contractor, the major works for the Contract in the coming quarter are summarized below:

December 2020

Land-based Works

· Handover Inspection at Main Control Building;

· Handover Inspection at Ventilation Plant Room;

· Handover Inspection at North Ventilation Building;

· Handover Inspection at Administration Building;

· Handover Inspection at Maintenance Depot;

· ABWF Works at Fire Services Department Building;

· External cladding & louvre installation, E&M works and final finishing works at Customs and Excise Department Building;

· Handover Inspection at Kiosk N1;

· Handover Inspection at Kiosk N2;

· Handover Inspection at the Tunnel;

· Handover Inspection at C3 area;

· Handover Inspection at Satellite Control Building;

· Handover Inspection at Kiosk S2;

· Handover Inspection at South Ventilation Building; and

· Handover Inspection at Northern Landfall and Southern Landfall.

January 2021

Land-based Works

· Architectural Builder’s Work and Finishes Works and Handover Inspection at Fire Services Department Building; and

· External cladding & luvre installation, E&M works, final finishing works and Handover Inspection at Customs and Excise Department Building.

February 2021

Land-based Works

· Architectural Builder’s Work and Finishes Works and Handover Inspection at Fire Services Department Building; and

E&M works, Final finishing works and Handover Inspection at Customs and Excise Department Building. December 2020

Land-based Works

· Handover Inspection at Main Control Building;

· Handover Inspection at Ventilation Plant Room;

· Handover Inspection at North Ventilation Building;

· Handover Inspection at Administration Building;

· Handover Inspection at Maintenance Depot;

· ABWF Works at Fire Services Department Building;

· External cladding & louvre installation, E&M works and final finishing works at Customs and Excise Department Building;

· Handover Inspection at Kiosk N1;

· Handover Inspection at Kiosk N2;

· Handover Inspection at the Tunnel;

· Handover Inspection at C3 area;

· Handover Inspection at Satellite Control Building;

· Handover Inspection at Kiosk S2;

· Handover Inspection at South Ventilation Building; and

· Handover Inspection at Northern Landfall and Southern Landfall.

January 2021

Land-based Works

· Architectural Builder’s Work and Finishes Works and Handover Inspection at Fire Services Department Building; and

· External cladding & luvre installation, E&M works, final finishing works and Handover Inspection at Customs and Excise Department Building.

February 2021

Land-based Works

· Architectural Builder’s Work and Finishes Works and Handover Inspection at Fire Services Department Building; and

· E&M works, Final finishing works and Handover Inspection at Customs and Excise Department Building.

3.2 Key Issues for the Coming Quarter

Potential environmental impacts arising from the above upcoming construction activities are mainly associated with waste management and landfill gas monitoring issues.

4 Conclusions and recommendations

4.1 Conclusions

This Tenth Quarterly EM&A Report presents the findings of the EM&A activities undertaken during the period from 1 September 2020 to 30 November 2020, in accordance with the Updated EM&A Manual and the requirements of EP-354/2009/D.

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

Eight (8) Action Level and two (2) Limit Level exceedances for 1-hour TSP and two (2) Action Level exceedances for 24-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 invsaestigation report is presented in Appendix I. 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 methane, oxygen and carbon dioxide was recorded during landfill gas hazard monitoring in the reporting period.

Environmental site inspection was carried out thirteen (13) times in the reporting period. 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 Contract 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/