Executive Summary
1.1 Background
1.2 Scope of Report
1.3 Organization Structure
1.4 Summary of Construction Works
2.1 Air quality
2.2 EM&A Site Inspection
2.3 Landfill Gas Hazard Monitoring
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
3.1 Construction Activities for the Coming Quarter
3.2 Key Issues for the Coming Quarter
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 Landfill Gas Monitoring Graphical Presentation
Appendix H Quarterly Summary of Waste Flow Table
Appendix I 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.
This is the Fifth Quarterly EM&A Report presenting the EM&A works carried out during the period from 1 June to 31 August 2019 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:
June 2019
Land-based Works
· Electrical and Mechanical Works and Architectural Builders 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;
· Building Structure at Fire Services Department Building;
· Building Structure at Customs and Excise Department Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Kiosk N2;
· Electrical and Mechanical Works at the Tunnel;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at underpass at C3 area; and
· Building Structure at Satellite Control Building.
July 2019
Land-based Works
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Toll Control Building;
· Electrical and Mechanical Works at Ventilation Plant Room;
· Electrical and Mechanical Works at North Ventilation Building;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Administration Building;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Maintenance Depot;
· Building Structure at Fire Services Department Building;
· Building Structure at Customs and Excise Department Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Kiosk N2;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at the Tunnel;
· Electrical and Mechanical Works and Architectural Builders Work Finishes at underpass at C3 area; and
· Architectural Builders Work and Finishes at Satellite Control Building.
August 2019
Land-based Works
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Toll Control Building;
· Electrical and Mechanical Works at Ventilation Plant Room;
· Electrical and Mechanical Works at North Ventilation Building;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Administration Building;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Maintenance Depot;
· Building Structure at Fire Services Department Building;
· Building Structure at Customs and Excise Department Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Kiosk N2;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at the Tunnel;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at underpass at C3 area;
· Building Structure at Satellite Control Building;
· Building Structure at Kiosk S1; and
· Building Structure at Toll Booth.
A summary of monitoring and audit activities conducted in the reporting period is listed below ([1]):
24-hour TSP Monitoring 30 sessions
1-hour TSP Monitoring 30 sessions
Landfill Gas Hazard Monitoring 40 days
Joint Environmental Site Inspection 13 sessions
Summary of Breaches of Action/Limit Levels
Breaches of Action and Limit Levels for Air Quality
Two (2) Action Level and one (1) Limit Level exceedances of 1-hour TSP and no exceedance of 24-hour TSP Action and Limit Levels 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 Level 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
There was no reporting change in the reporting period.
Upcoming Works for the Next Reporting Period
Works to be undertaken in the coming quarter include the following:
September 2019
Land-based Works
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Toll Control Building;
· Electrical and Mechanical Works at Ventilation Plant Room;
· Electrical and Mechanical Works at North Ventilation Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Administration Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Maintenance Depot;
· Building Structure at Fire Services Department Building;
· Building Structure at Customs and Excise Department Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Kiosk N2;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at the Tunnel;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at underpass at C3 area;
· Building Structure at Satellite Control Building;
· Building Structure at Kiosk S2;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Toll Booth; and
· Electrical and Mechanical Works at South Ventilation Building.
October 2019
Land-based Works
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Toll Control Building;
· Electrical and Mechanical Works at Ventilation Plant Room;
· Electrical and Mechanical Works at North Ventilation Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Administration Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes 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 Kiosk N2;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at the Tunnel;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at underpass at C3 area;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Satellite Control Building;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Kiosk S2;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Toll Booth; and
· Electrical and Mechanical Works at South Ventilation Building.
November 2019
Land-based Works
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Toll Control Building;
· Electrical and Mechanical Works at Ventilation Plant Room;
· Electrical and Mechanical Works at North Ventilation Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Administration Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes 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 Kiosk N2;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at the Tunnel;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at underpass at C3 area;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Satellite Control Building;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Kiosk S2;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Toll Booth; and
· Electrical and Mechanical Works at South Ventilation Building.
Future Key Issues
Potential environmental impacts arising from the above upcoming construction activities in the coming quarterly period 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 Fifth 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 June to 31 August 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 rolling construction programme for the period of June to August 2019 is shown in Appendix B.
As informed by the Contractor, details of the major works carried out in this reporting period are listed below:
June 2019
Land-based Works
· Electrical and Mechanical Works and Architectural Builders 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;
· Building Structure at Fire Services Department Building;
· Building Structure at Customs and Excise Department Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Kiosk N2; and
· Electrical and Mechanical Works at the Tunnel;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at underpass at C3 area; and
· Building Structure at Satellite Control Building.
July 2019
Land-based Works
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Toll Control Building;
· Electrical and Mechanical Works at Ventilation Plant Room;
· Electrical and Mechanical Works at North Ventilation Building;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Administration Building;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Maintenance Depot;
· Building Structure at Fire Services Department Building;
· Building Structure at Customs and Excise Department Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Kiosk N2;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at the Tunnel;
· Electrical and Mechanical Works and Architectural Builders Work Finishes at underpass at C3 area; and
· Architectural Builders Work and Finishes at Satellite Control Building.
August 2019
Land-based Works
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Toll Control Building;
· Electrical and Mechanical Works at Ventilation Plant Room;
· Electrical and Mechanical Works at North Ventilation Building;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Administration Building;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Maintenance Depot;
· Building Structure at Fire Services Department Building;
· Building Structure at Customs and Excise Department Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Kiosk N2; and
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at the Tunnel;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at underpass at C3 area;
· Building Structure at Satellite Control Building;
· Building Structure at Kiosk S1; and
· Building Structure at Toll Booth.
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.
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 |
1, 4, 7, 10, 13, 16, 19, 22, 25, and 28 June 2019
1, 4, 7, 10, 13, 16, 19, 22, 25, and 28 July 2019
3, 6, 9, 12, 15, 18, 21, 24, 27, and 30 August 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]).
Two (2) Action Level exceedances for 1-hour TSP on 10 and 28 July 2019, and one (1) Limit Level exceedance for 1-hour TSP on 28 July 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 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 6, 14, 21 and 28 June, 5, 12, 19, 26 July and 2, 9, 16, 23 and 30 August 2019.
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 |
|
6 June 2019 |
Toll Control Building Ÿ Chemical container on the ground should be removed.
|
Toll Control Building Ÿ The Contractor was reminded to remove chemical container on the ground. |
|
14 June 2019 |
North Ventilation Building Ÿ Construction waste should be sorted. Ÿ Accumulated waste in refuse skip should be removed. |
North Ventilation Building Ÿ The Contractor are reminded to sort out different waste for disposal. The Contractor are reminded to clear accumulated waste in refuse skip. |
|
21 June 2019 |
Maintenance Depot Ÿ Chemical container was observed without drip tray. Ÿ Concrete bags should be covered with tarpaulin. Administration Building Ÿ Waste should be sorted for disposal. |
Maintenance Depot Ÿ The Contractor was reminded to place chemical containers in drip tray. Ÿ The Contractor was reminded to cover concrete bags with tarpaulin. Administration Building Ÿ The Contractor are reminded to sort out different waste. |
|
28 June 2019 |
North Ventilation Building Ÿ Accumulated waste should be removed. Customs and Excise Building Waste should be sorted properly for disposal. |
North Ventilation Building Ÿ The Contractor was reminded to remove accumulated waste. Customs and Excise Building The Contractor was reminded to sort waste properly for disposal. |
|
5 July 2019 |
Toll Control Building Ÿ Waste should be sorted for disposal. Ÿ Chemical container was observed without drip tray. |
Toll Control Building Ÿ The Contractor was reminded to sort out different waste for disposal. Ÿ The Contractor was reminded to place chemical containers in drip tray.
|
|
12 July 2019 |
North Ventilation Building Ÿ Waste should be sorted for disposal. |
North Ventilation Building Ÿ The Contractor was reminded to sort out different waste for disposal. |
|
19 July 2019 |
North Ventilation Building Ÿ Accumulated waste should be cleared and sorted for disposal. Tunnel Ÿ Accumulated waste should be cleared and sorted for disposal. |
North Ventilation Building Ÿ The Contractor was reminded to clear and sort out different type of waste for disposal. Tunnel Ÿ The Contractor was reminded to clear and sort out different type of waste for disposal. |
|
26 July 2019 |
North Ventilation Building Ÿ Accumulated waste should be cleared or disposed in refuse skip. |
North Ventilation Building Ÿ The Contractor was reminded to clear or disposed of accumulated waste in refuse skip. |
|
2 August 2019 |
South Control Building Ÿ Rubbish bin for general refuse should be capped. South Ventilation Building Ÿ Oil stain was observed on the ground. Ÿ Chemical should be placed in drip tray. |
South Control Building Ÿ The Contractor was reminded to cap rubbish bin for general refuse. South Ventilation Building Ÿ The Contractor was reminded to clear oil stain off the ground. Ÿ The Contractor was reminded to place chemical containers in drip tray. |
|
9 August 2019 |
Maintenance Depot Ÿ Chemical container should be placed in drip tray. Ÿ Chemical container should be placed in drip tray. |
Maintenance Depot Ÿ The Contractor was reminded to place chemical containers in drip tray. Ÿ The Contractor was reminded to dispose of general refuse in capped rubbish bins. Ÿ |
|
16 August 2019 |
Maintenance Depot Ÿ General refuse should be disposed of in capped rubbish bins. Ÿ Chemical container should be placed in drip tray. |
Maintenance Depot Ÿ The Contractor was reminded to dispose of general refuse in capped rubbish bins. Ÿ The Contractor was reminded to place chemical container in drip tray. |
|
23 August 2019 |
Customs and Excise Department Building Ÿ Drip tray should be provided for chemical containers. Ÿ Oil on the ground should be cleaned up. |
Customs and Excise Department Building Ÿ The Contractor was reminded to place chemical container in drip tray. Ÿ The Contractor was reminded to clear the oil stain off the ground. |
|
30 August 2019 |
No comment. |
No comment. |
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 performed to ensure that the works area at Pillar Point Valley (PPV) Landfill is free of landfill gas during any excavations works. A total of 40 days of landfill gas hazard monitoring was conducted at Ventilation Plant Room prior to the excavation works during 17 July 2019 and 31 August 2019 in the reporting period (Appendix F).
The Action and Limit Levels of the
landfill gas hazard monitoring were adopted from
the Updated 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 (%) |
|
July 2019 |
Methane |
0 |
0 |
10 / 20 |
|
|
Oxygen |
20.9 |
20.7 - 20.9 |
19 / 18 |
|
|
Carbon Dioxide |
0.03 |
0.03 – 0.04 |
0.5 / 1.5 |
|
August 2019 |
Methane |
0 |
0 |
10 / 20 |
|
|
Oxygen |
20.9 |
20.8-20.9 |
19 / 18 |
|
|
Carbon Dioxide |
0.03 |
0.03-0.04 |
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) |
||
|
|
||||||||
|
June 2019 |
11 |
0 |
118,070 |
0 |
77 |
|
|
0 |
|
July 2019 |
58 |
0 |
148,880 |
0 |
70 |
|
|
0 |
|
August 2019 |
192(d) |
0 |
177,240(d) |
0 |
0 |
|
|
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 figure is 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 |
|
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-RS0340-19 |
18 April 2019 |
17 October 2019 |
GCL |
For Kiosk S2 and SCB |
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
Two (2) Action Level exceedances for 1-hour TSP on 10 and 28 July 2019, and one (1) Limit Level exceedance for 1-hour TSP on 28 July 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 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 24-hour TSP was recorded in the reporting period.
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:
September 2019
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Toll Control Building;
· Electrical and Mechanical Works at Ventilation Plant Room;
· Electrical and Mechanical Works at North Ventilation Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Administration Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Maintenance Depot;
· Building Structure at Fire Services Department Building;
· Building Structure at Customs and Excise Department Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Kiosk N2;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at the Tunnel;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at underpass at C3 area;
· Building Structure at Satellite Control Building;
· Building Structure at Kiosk S2;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Toll Booth; and
· Electrical and Mechanical Works at South Ventilation Building.
October 2019
Land-based Works
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Toll Control Building;
· Electrical and Mechanical Works at Ventilation Plant Room;
· Electrical and Mechanical Works at North Ventilation Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Administration Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes 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 Kiosk N2;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at the Tunnel;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at underpass at C3 area;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Satellite Control Building;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Kiosk S2;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Toll Booth; and
· Electrical and Mechanical Works at South Ventilation Building.
November 2019
Land-based Works
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Toll Control Building;
· Electrical and Mechanical Works at Ventilation Plant Room;
· Electrical and Mechanical Works at North Ventilation Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at Administration Building;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes 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 Kiosk N2;
· Electrical and Mechanical Works and Architectural Builder's Work and Finishes at the Tunnel;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at underpass at C3 area;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Satellite Control Building;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Kiosk S2;
· Electrical and Mechanical Works and Architectural Builders Work and Finishes at Toll Booth; and
· Electrical and Mechanical Works at South Ventilation Building.
3.2
Key Issues for the Coming Quarter
Potential environmental impacts arising from the above upcoming construction activities are mainly associated with dust and waste management issues.
4
Conclusions and recommendations
4.1
Conclusions
This Fifth Quarterly EM&A Report presents the findings of the EM&A activities undertaken during the period from 1 June to 31 August 2019, 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.
Two (2) 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 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 24-hour TSP was recorded in the reporting month.
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.