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                                

1.5                   Summary of EM&A Programme Requirements          

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                      Conclusions and recommendations                           

3.1                   Conclusions                                                                            

 

List of Appendices

Appendix A       Project Organization for Environmental Works

Appendix B       Implementation Schedule of Environmental Mitigation Measures (EMIS)

Appendix C       Summary of Action and Limit Levels

Appendix D       Event Action Plan

Appendix E       Landfill Gas Monitoring Graphical Presentation

Appendix F       Summary of Waste Flow Table

Appendix G      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 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.   

Termination proposal for construction EM&A programme was approved by EPD on 26 March 2021.  The construction phase EM&A programme of the Contract has been terminated since 26 March 2021.

This is the Final EM&A Report presenting the EM&A works carried out during the period from 1 June 2018 to 26 March 2021 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 during the course of this Contract included:

Land-based Works

·         Site preparation works, Bar bending, Timber formwork, Concreting, Electrical and Mechanical Works, Architectural Builder’s Work and Finishes and Handover Inspection at Toll Control Building/Main Control Building;

·         Bar bending and Timber formwork, Architectural, Builder’s Work and Finishing, Electrical and Mechanical Works and Handover Inspection at Ventilation Plant Room;

·         ER’s and the Contractor’s site offices erection at WA18;

·         Additional land ground investigation (GI), Socket H-pilling, Excavation, Building Structure, Electrical and Mechanical Works, Architectural Builders Work and Finishes and Handover Inspection at Administration Building, Trial pits and laboratory testing;

·         Electrical and Mechanical Works and Handover Inspection at North Ventilation Building;

·         Additional land ground investigation (GI), Socket H-pilling, Excavation, Building Structure, Electrical and Mechanical Works, Architectural Builders Work and Finishes and Handover Inspection at Maintenance Depot, Trial pits and laboratory testing;

·         Pre-drilling, Socket H-piling, Excavation, Building Structure, Electrical and Mechanical Works, Architectural Builder's Work, Handover Inspection , External Cladding & Louvre Installation, Final Finishing Works and Minor Work at Customs & Excise Department Building;

·         Trial pits, Pre-drilling, Socket H-piling, Excavation, Building Structure, Electrical and Mechanical Works, Architectural Builder's Work, Handover Inspection and Minor Work at Fire Service Department Building;

·         Electrical and Mechanical Works, Architectural Builder's Work and Finishes, Handover Inspection and Minor Work at N1;

·         Electrical and Mechanical Works and Architectural Builders’ Works and Finishes, Handover Inspection and Minor Work at Kiosk N2;

·         Electrical and Mechanical Works, Architectural Builder's Work and Finishes and Handover Inspection at Underpass at C3 area;

·         Electrical and Mechanical Works, Architectural Builder's Work and Finishes, T&C and FSI at the Tunnel; 

·         Excavation, Building Structure, Electrical and Mechanical Works, Architectural Builders Work and Finishes and Handover Inspection at Satellite Control Building;

·         Building Structure at Kiosk S1;

·         Building Structure, Electrical and Mechanical Works, Architectural Builders Work and Finishes, Handover Inspection and Minor Work at Kiosk S2;

·         Electrical and Mechanical Works and Handover Inspection at South Ventilation Building;

·         Building Structure, Electrical and Mechanical Works and Architectural Builders Work and Finishes at Toll Booth; and

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

A summary of monitoring and audit activities conducted during the course of this Contract is listed below ^([1]):

24-hour TSP Monitoring                            306 sessions

1-hour TSP Monitoring                              306 sessions

Landfill Gas Hazard Monitoring                445 days

Joint Environmental Site Inspection         147 sessions

Summary of Breaches of Action/Limit Levels

Breaches of Action and Limit Levels for Air Quality

Fifty-six (56) Action Level exceedances and eleven (11) Limit Level exceedances for 1-hour TSP and four (4) Action Level exceedances for 24-hour TSP were recorded by the Environmental Team of Contract No. HY/2012/08 during the course of this Contract.  No Limit Level exceedance of 24-hour TSP was recorded.

Breaches of Action and Limit Levels for Landfill Gas Hazard Monitoring

No exceedance of Action and Limit Level exceedance was recorded for landfill gas hazard monitoring during the course of this Contract.

Environmental Complaints, Non-compliance & Summons

There was one (1) environmental complaint received from EPD during the course of this Contract.  No notification of summons or successful prosecution was received during the course of this Contract.

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 Twenty-seventh and Thirtieth EM&A report for this Contract.

Landscape and visual monitoring for 24-month establishment period conducted by Contract No. HY/2013/12 and HMWSD 2/2020 (HY) was reported in the Thirty-Third EM&A report for this Contract.

Landscape and visual monitoring for 24-month establishment period for Southern Landfall, Northern Landfall and Main Control Building under this Contract was reported in the Thirty-Fourth EM&A report for this Contract.

Notification of temporary suspension of air quality monitoring has been approved by EPD on 16 March 2021.

Termination proposal for construction EM&A programme was approved by EPD on 26 March 2021.  The construction phase EM&A programme of the Contract has been terminated since 26 March 2021.

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.

 

Termination proposal for construction EM&A programme was approved by EPD on 26 March 2021.  The construction phase EM&A programme of the Contract has been terminated since 26 March 2021.

1.2                         Scope of Report

This is the Final 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 7 June 2018 to 26 March 2021.

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
		Manson Yeung (1)		9700 6767	3465 2899
		Brian Tam (2)		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) The role and responsibilities as the IEC of the Contract has been taken up by Mr Manson Yeung instead of Dr. F.C. Tsang since 18 May 2020. (2) The role and responsibilities as the IEC of the Contract has been taken up by Mr Brian Tam instead of Mr. Manson Yeung since 12 April 2021.

1.4                         Summary of Construction Works

As informed by the Contractor, details of the major works carried out during the course of this Contract are listed below:

Land-based Works

·         Site preparation works, Bar bending, Timber formwork, Concreting, Electrical and Mechanical Works, Architectural Builder’s Work and Finishes and Handover Inspection at Toll Control Building/Main Control Building;

·         Bar bending and Timber formwork, Architectural, Builder’s Work and Finishing, Electrical and Mechanical Works and Handover Inspection at Ventilation Plant Room;

·         ER’s and the Contractor’s site offices erection at WA18;

·         Additional land ground investigation (GI), Socket H-pilling, Excavation, Building Structure, Electrical and Mechanical Works, Architectural Builders Work and Finishes and Handover Inspection at Administration Building, Trial pits and laboratory testing;

·         Electrical and Mechanical Works and Handover Inspection at North Ventilation Building;

·         Additional land ground investigation (GI), Socket H-pilling, Excavation, Building Structure, Electrical and Mechanical Works, Architectural Builders Work and Finishes and Handover Inspection at Maintenance Depot, Trial pits and laboratory testing;

·         Pre-drilling, Socket H-piling, Excavation, Building Structure, Electrical and Mechanical Works, Architectural Builder's Work, Handover Inspection , External Cladding & Louvre Installation, Final Finishing Works and Minor Work at Customs & Excise Department Building;

·         Trial pits, Pre-drilling, Socket H-piling, Excavation, Building Structure, Electrical and Mechanical Works, Architectural Builder's Work, Handover Inspection and Minor Work at Fire Service Department Building;

·         Electrical and Mechanical Works, Architectural Builder's Work and Finishes, Handover Inspection and Minor Work at N1;

·         Electrical and Mechanical Works and Architectural Builders’ Works and Finishes, Handover Inspection and Minor Work at Kiosk N2;

·         Electrical and Mechanical Works, Architectural Builder's Work and Finishes and Handover Inspection at Underpass at C3 area;

·         Electrical and Mechanical Works, Architectural Builder's Work and Finishes, T&C and FSI at the Tunnel; 

·         Excavation, Building Structure, Electrical and Mechanical Works, Architectural Builders Work and Finishes and Handover Inspection at Satellite Control Building;

·         Building Structure at Kiosk S1;

·         Building Structure, Electrical and Mechanical Works, Architectural Builders Work and Finishes, Handover Inspection and Minor Work at Kiosk S2;

·         Electrical and Mechanical Works and Handover Inspection at South Ventilation Building;

·         Building Structure, Electrical and Mechanical Works and Architectural Builders Work and Finishes at Toll Booth; and

·         Soil Mix 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 B.

Figure 1.3       Locations of Major Construction Activities during the course of this Contract

1.5                         Summary of EM&A Programme Requirements

The EM&A programme required environmental monitoring for air quality and environmental site inspections for air quality, waste management and landscape and visual impacts.  The EM&A requirements and related findings for each component are described in the following sections, which include:

·                Monitoring parameters;

·                Action and Limit levels for all environmental parameters;

·                Event Action Plan;

·                Tested environmental impact hypotheses;

·                Environmental mitigation measures, as recommended in the approved EIA Report; and

·                Environmental requirement in contract documents.

2                             EM&A Results

The EM&A programme required environmental monitoring for air quality and environmental site inspections for air quality, waste management and landscape and visual impacts.  The EM&A requirements and related findings for each component are summarized in the following sections

2.1                         Air quality

2.1.1                     Monitoring Requirements and Equipment

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 C.

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.

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.

Notification of temporary suspension of air quality monitoring has been approved by EPD on 16 March 2021.

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

Monitoring Station	Monitoring Period	Location	Description	Parameters & Frequency
ASR1	From 1 June 2018 to 26 March 2021	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]).

Fifty-six (56) Action Level exceedances and eleven (11) Limit Level exceedances for 1-hour TSP and four (4) Action Level exceedances for 24-hour TSP were recorded by the Environmental Team of Contract No. HY/2012/08 during the course of this Contract.  The exceedances were considered not related to this Contract upon further investigation.  No action is required to be undertaken in accordance with the Event Action Plan as presented in Appendix D.

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 445 days of landfill gas hazard monitoring was conducted during the course of this Contract. 

The schedules for landfill gas hazard monitoring were provided in the Eighth, Tenth to Twelfth, Fourteenth to Twentieth, Twenty-sixth to Thirty-fourth Monthly EM&A Reports.

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 C.

2.2.1                     Results and Observations

Results for landfill gas hazard monitoring are summarized in Table 2.2 and the monitoring results were presented graphycally in Appendix E.

No exceedance of Action and Limit Levels for methane, oxygen and carbon dioxide was recorded during the course of this Contract.

Table 2.2        Summary of Landfill Gas Hazard Monitoring Results during the course of this Contract

		Average (%)	Range (%)	Action / Limit Level (%)
January 2019, March – May 2019, July 2019 - January 2020 (b), July 2020 – March 2021 (c) (a)	Methane	0	0	10/20
	Oxygen	20.8	20.7-20.9	19/18
	Carbon Dioxide	0.04	0.03-0.08	0.5/1.5
Notes:
(a)   Depending on the results of the measurements, actions required will vary. Actions in the event  of landfill gas being detected in excavation/confined area was adopted from the Updated EM&A Manual of the TM-CLK Link Project. (b)   No landfill gas monitoring was scheduled since 25 January 2020 as no excavation work at Toll Control Building/Main Control Building was undertaken since 25 January 2020. (c)    No landfill gas monitoring was scheduled in June 2020 as no excavation work at Main Control Building was undertaken in June 2020.

2.3                         EM&A Site Inspection

Site inspections were carried out on weekly basis to monitor the implementation of proper environmental pollution control and mitigation measures under the Contract.  One hundred and forty seven (147) site inspections were carried out during the course of this Contract.  Key observations were summarized in the section of EM&A Site Inspection in the First to Thirty-fourth Monthly EM&A Reports.  The Contractor has rectified all of the observations identified during environmental site inspections during the course of this Contract.

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 the course of this Contract included mainly construction wastes (inert and non-inert).  Reference has been made to the waste flow table prepared by the Contractor (Appendix F). 

Waste monitoring and audit programme has been undertaken during the impact monitoring period.  Wastes arising from this Contract have been managed in accordance with the recommendations in the EIA Report, the EM&A Manual, the Waste Management Plan and other relevant statutory requirements.

2.5                         Environmental Licenses and Permits

The status of environmental licensing and permit is summarized in Table 2.4 below.

Table 2.4    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-RW0262-18	9 July 2018	9 January 2019	GCL	For Toll Control Building, Administration Building and WA18
Construction Noise Permit	GW-RW0384-18	14 September 2018	6 March 2019	GCL	For Toll Control Building, Administration Building, Maintenance Depot and WA18
Construction Noise Permit	GW-RW0451-18	2 November 2018	25 April 2019	GCL	For Toll Control Building, Administration Building, Maintenance Depot and WA18
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
Construction Noise Permit	GW-RW0135-19	27 March 2019	30 September 2019	GCL	For Toll Control Building, Administration Building, Maintenance Depot, FSD, C&ED, Bouundary Wall and WA18
Construction Noise Permit	GW-RW0267-19	21 June 2019	14 October 2019	GCL	For Toll Control Building, Administration Building, Maintenance Depot, FSD, C&ED, Bouundary Wall, Tunnel, Approach ramp, NVB, and WA18
Construction Noise Permit	GW-RW0524-19	3 November 2019	29 April 2020	GCL	For Toll Control Building, Administration Building, Maintenance Depot, FSD, C&ED, Boundary Wall, Tunnel, Approach ramp, NVB and WA18
Construction Noise Permit	GW-RS0202-19	4 March 2019	3 September 2019	GCL	For Kiosk S2
Construction Noise Permit	GW-RS0340-19	18 April 2019	17 October 2019	GCL	For Kiosk S2
Construction Noise Permit	GW-RS0778-19	30 August 2019	28 Februry 2020	GCL	For Kiosk S2 and SCB
Construction Noise Permit	GW-RS1130-19	19 December 2019	18 June 2020	GCL	For Kiosk S2 and SCB
Construction Noise Permit	GW-RS0448-19	25 September 2019	14 December 2019	GCL	For Deck Void Lighting Installation
Construction Noise Permit	GW-RW0054-20	11 February 2020	11 August 2020	GCL	For Northern Landfall and Tunnel
Construction Noise Permit	GW-RW0351-20	3 August 2020	29 January 2021	GCL	For Northern Landfall and Tunnel
Construction Noise Permit	GW-RW0578-20	31 December 2020	14 June 2021	GCL	For Northern Landfall and Tunnel
Construction Noise Permit	GW-RW0003-21	30 January 2021	29 July 2021	GCL	For Northern Landfall and Tunnel
Construction Noise Permit	GW-RS0039-20	23 January 2020	22 July 2020	GCL	For HKBCF Area
Construction Noise Permit	GW-RS0413-20	19 June 2020	15 December 2020	GCL	For HKBCF Area
Construction Noise Permit	GW-RS0904-20	16 December 2020	14 June 2021	GCL	For HKBCF Area
Construction Noise Permit	GW-RW0501-20	27 October 2020	24 December 2020	GCL	For Lung Mun Road Overnight Works
Construction Noise Permit	GW-RW0578-20	31 December 2020	14 June 2021	GCL	For Lung Mun Road near Ho Wan Street

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 B. The necessary mitigation measures relevant to this Contract were implemented properly.

2.7                         Summary of Exceedances of the Environmental Quality Performance Limit

Fifty-six (56) Action Level exceedances and eleven (11) Limit Level exceedances for 1-hour TSP and four (4) Action Level exceedances for 24-hour TSP were recorded by the Environmental Team of Contract No. HY/2012/08 during the course of this Contract.  The exceedances were considered not related to this Contract upon further investigation.   No action is required to be undertaken in accordance with the Event Action Plan as presented in Appendix D.

No exceedance of Action and Limit Levels for methane, oxygen and carbon dioxide was recorded landfill gas hazard monitoring during the course of this Contract.

Cumulative statistics are provided in Appendix G.

2.8                         Summary of Complaints, Notification of Summons and Successful Prosecutions

The Environmental Complaint Handling Procedure is provided in Figure 2.2.

There was one (1) environmental complaint received from EPD during the course of this Contract.  Upon investigation, there were no adequate evidences to conclude that the complaint case was related to this Contract. 

No notification of summons or successful prosecution was received during the course of this Contract.

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

 

 

3                             Conclusions and recommendations

3.1                         Conclusions

This Final EM&A Report presents the findings of the EM&A activities undertaken during the period from 7 June 2018 to 26 March 2021, in accordance with the Updated EM&A Manual and the requirements of EP-354/2009/D.

Termination proposal for construction EM&A programme was approved by EPD on 26 March 2021.  The construction phase EM&A programme of the Contract has been terminated since 26 March 2021.

The review of monitoring data suggested that the construction works under this Contract have proceeded in an environmentally acceptable manner in the impact monitoring period.  In general, the monitoring results were in line with EIA predictions.

The EM&A programme was considered as adequate and effective in monitoring impacts arising from the Contract.