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 Quarterly Summary of Waste Flow Table
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 First Quarterly EM&A Report presenting the EM&A works carried out during the period from 7 June to 31 August 2018 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 2018
Land-based Works
· Bar bending and timber formwork at Toll Control Building and Ventilation Plant Room;
· ER’s and the Contractor’s site offices erection at WA18; and
· Additional land ground investigation (GI) at Administration Building, trial pits and laboratory testing.
July 2018
Land-based Works
· Bar bending and timber formwork at Toll Control Building and Ventilation Plant Room;
· ER’s and the Contractor’s site offices erection at WA18; and
· Additional land ground investigation (GI) at Administration Building, trial pits and laboratory testing.
August 2018
Land-based Works
· Site preparation works, bar bending, timber formwork and concreting at Toll Control Building;
· Architectural, Builder’s Work and Finishing at Ventilation Plant Room;
· ER’s and the Contractor’s site offices erection at WA18;
· Electrical and Mechanical Works at Northern Ventilation Building;
· Socket H-pilling at Administration Building; and
· Additional land ground investigation (GI) at Maintenance Depot, trial pits and laboratory testing.
A summary of monitoring and audit activities conducted in the reporting period is listed below ([1]):
24-hour TSP Monitoring 28 sessions
1-hour TSP Monitoring 28 sessions
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 exceedances for 1-hour TSP were recorded by the Environmental Team of Contract No. HY/2012/08 during 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 2018
Land-based Works
· Bar bending, timber formwork and concreting at Toll Control Building;
· Architectural, Builder’s Work and Finishing and Electrical and Mechanical Works at Ventilation Plant Room;
· Electrical and Mechanical Works at Northern Ventilation Building;
· Socket H-pilling at Administration Building;
· Additional land ground investigation (GI) and socket H-pilling at Maintenance Depot, trial pits and laboratory testing.
October 2018
Land-based Works
· Bar bending, timber formwork and concreting at Toll Control Building;
· Architectural, Builder’s Work and Finishing and Electrical and Mechanical Works at Ventilation Plant Room;
· Electrical and Mechanical Works at Northern Ventilation Building;
· Socket H-pilling at Administration Building;
· Additional land ground investigation (GI) and socket H-pilling at Maintenance Depot, trial pits and laboratory testing.
November 2018
Land-based Works
· Bar bending, timber formwork and concreting at Toll Control Building;
· Architectural, Builder’s Work and Finishing and Electrical and Mechanical Works at Ventilation Plant Room;
· Electrical and Mechanical Works at Northern Ventilation Building;
· Excavation at Administration Building;
· Excavation at Maintenance Depot;
· Pre-drilling and socket H-piling at Customs & Excise Department Building; and
· Trial pits, pre-drilling and socket H-piling at Fire Service Department 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.
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.
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 |
The construction phase of the Contract commenced on 7 June 2018. The rolling construction programme for the period of June to August 2018 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 2018
Land-based Works
· Bar bending and timber formwork at Toll Control Building and Ventilation Plant Room;
· ER’s and the Contractor’s site offices erection at WA18; and
· Additional land ground investigation (GI) at Administration Building, trial pits and laboratory testing.
July 2018
Land-based Works
· Bar bending and timber formwork at Toll Control Building and Ventilation Plant Room;
· ER’s and the Contractor’s site offices erection at WA18; and
· Additional land ground investigation (GI) at Administration Building, trial pits and laboratory testing.
August 2018
Land-based Works
· Site preparation works, bar bending, timber formwork and concreting at Toll Control Building;
· Architectural, Builder’s Work and Finishing at Ventilation Plant Room;
· ER’s and the Contractor’s site offices erection at WA18;
· Electrical and Mechanical Works at Northern Ventilation Building;
· Socket H-pilling at Administration Building; and
· Additional land ground investigation (GI) at Maintenance Depot, trial pits and laboratory testing.
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.
Figure 1.3 Locations of Major Construction Activities in the Reporting Period
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
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 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 and its Corresponding Monitoring Requirements
Monitoring Station |
Monitoring Dates |
Location |
Description |
Parameters & Frequency |
ASR1 |
9, 12, 15, 18, 21, 24, 27 and 30 June 2018 |
Tuen Mun Fireboat Station
|
Office |
TSP monitoring 1-hour Total Suspended Particulates (1-hour TSP, µg/m3), 3 times in every 6 days 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) 1-hour Total Suspended Particulates (1-hour TSP, µg/m3), 3 times in every 3 days 24-hour Total Suspended Particulates (24-hour TSP, µg/m3), daily for 24-hour in every 3 days |
ASR5 |
3, 6, 9, 12, 15, 18, 21, 24, 27 and 30 July 2018 |
Pillar Point Fire Station
|
Office |
|
AQMS1 |
2, 5, 8, 11, 14, 17, 20, 23, 26 and 29 August 2018 |
Previous River Trade Golf
|
Bare ground |
|
ASR6 |
|
Butterfly Beach Laundry
|
Office |
|
ASR10 |
|
Butterfly Beach Park |
Recreational uses |
Two (2) Action Level exceedances for 1-hour TSP on 26 and 29 August 2018 were recorded by the Environmental Team of Contract No. HY/2012/08 during the reporting period. The exceedances were considered not related to this Contract upon further investigation and the investigation report is presented in Appendix G. No action is required to be undertaken in accordance with the Event Action Plan as presented in Appendix E.
No exceedance of Action and Limit Levels for 24-hour TSP was recorded in the reporting period.
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 8, 15, 22 and 29 June 2018, 6, 13, 20 and 27 July 2018 and 3, 10, 17, 24 and 31 August 2018.
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 |
8 June 2018 |
Ventilation Plant Room Chemical containers were observed not placed in drip tray. Toll Control Building Stagnant water in the drip tray near the generator was observed not cleared. |
Ventilation Plant Room The Contractor was reminded to place chemical containers in drip tray. Toll Control Building The Contractor was reminded to clear stagnant water in the drip tray. |
15 June 2018 |
WA18 Stagnant water in the drip tray and trolley in front of site office were observed not cleared. Ventilation Plant Room Chemical containers were observed not placed in drip tray. Duplicate QPME label should be displayed on the sides of the generator for checking. |
WA18 The Contractor was reminded to clear stagnant water in the drip tray and in the trolley. Ventilation Plant Room The Contractor was reminded to place chemical containers in drip tray. The Contractor was reminded to provide QPME label on the sides of the generator. |
22 June 2018 |
Toll Control Building Checklist should be provided on the wetsep. On-site sorting should be implemented on site for wastes. Administration Building Chemical labels should be displayed on the chemical containers used in wetsep operation. |
Toll Control Building The Contractor was reminded to provide wetsep checklist. The Contractor was reminded to implement on-site waste sorting. Administration Building The Contractor was reminded to provide chemical labels on the chemical containers. |
29 June 2018 |
Ventilation Plant Room Stagnant water in the drip tray was observed not cleared. Toll Control Building Chemical container was observed not placed in drip tray. |
Ventilation Plant Room The Contractor was reminded to clear stagnant water in the drip tray. Toll Control Building The Contractor was reminded to place chemical container in drip tray. |
6 July 2018 |
Toll Control Building Chemical container was observed not placed in drip tray. Good housekeeping should be maintained. |
Toll Control Building The Contractor was reminded to place chemical container in drip tray. The Contractor was reminded to maintain good housekeeping. |
13 July 2018 |
Ventilation Plant Room Accumulated general refuse should be cleared. |
Ventilation Plant Room The Contractor was reminded to clear general refuse. |
20 July 2018 |
Ventilation Plant Room General refuse should be cleared.
|
Ventilation Plant Room The Contractor was reminded to clear general refuse. |
27 July 2018 |
Maintenance Depot NRMM label should be displayed on piling rig. Toll Control Building Stagnant water was observed on the chemical container. Silt removal should be carried out at the U-channel. |
Maintenance Depot The Contractor was reminded to display NRMM label on piling rig. Toll Control Building The Contractor was reminded to clear stagnant water on the chemical container. The Contractor was reminded to install silt removal system at the U-channel. |
3 August 2018 |
Administration Building Chemical containers were observed not placed in drip tray. |
Administration Building The Contractor was reminded to place chemical containers in drip tray. |
10 August 2018 |
Administration Building Chemical containers were observed not placed in drip tray. Checklist should be provided on the wetsep. |
Administration Building The Contractor was reminded to place chemical containers in drip tray. The Contractor was reminded to provide wetsep checklist. |
17 August 2018 |
Maintenance Depot Black smoke was observed near the water pump.
|
Maintenance Depot The Contractor was reminded to check and repair the water pump before use. |
24 August 2018 |
Administration Building Chemical containers were observed not placed in drip tray. |
Administration Building The Contractor was reminded to place chemical containers in drip tray. |
31 August 2018 |
Administration Building NRMM label should be displayed on the generator. |
Administration Building The Contractor was reminded to display NRMM label on the generator. |
The Contractor has rectified all of the observations as identified during environmental site inspections in the reporting period.
Landfill gas hazard monitoring was undertaken by the Safety Officer on combustible gas (include methane as part of the component) and oxygen to monitor the risk to workers at the excavation area in August 2018 during the reporting period. However, it is noted that carbon dioxide and methane which are required under the Updated EM&A Manual were not measured. As such, the monitoring data are not presented in this report.
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 F). The quantities of different types of wastes are summarized in Table 2.3.
Table 2.3 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 2018 |
2085 |
0 |
3,750 |
0 |
0 |
|
0 |
|
|
July 2018 |
830 |
0 |
15,190 |
0 |
0 |
|
0 |
|
|
August 2018 |
825 |
0 |
103,420 |
0 |
0 |
|
0 |
|
|
|
Notes: |
|
|||||||
|
(a) Inert construction wastes include hard rock and large broken concrete, and materials disposed as public fill. (b) Non-inert construction wastes include general refuse disposed at landfill. (c) Recyclable materials include metals, paper, cardboard, plastics, timber and others. |
|
|||||||
The Contractor was advised to properly maintain on site C&D materials and waste collection, sorting and recording system, dispose of C&D materials and wastes at designated ground and maximize reuse/ recycle of C&D materials and wastes. The Contractor was also reminded to properly maintain the site tidiness and dispose of the wastes accumulated on site regularly and properly.
For chemical waste containers, the Contractor was reminded to treat properly and store temporarily in designated chemical waste storage area on site in accordance with the Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes.
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 |
|
|
|
GCL |
Public Notice has been published on 20 August 2018 |
Discharge License under WPCO for Buildings at C3 area |
GCL |
Public Notice has been published on 28 August 2018 |
|||
Construction Noise Permit |
GW-RW0262-18 |
9 July 2018 |
9 Jan 2019 |
GCL |
For Toll Control Building, Administration Building and WA18 |
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.
Two (2) Action Level exceedances for 1-hour TSP were recorded by the Environmental Team of Contract No. HY/2012/08 during the reporting period. The exceedances were considered not related to this Contract upon further investigation and the investigation report is presented in Appendix G. No action is required to be undertaken in accordance with the Event Action Plan as presented in Appendix E.
No exceedance of 24-hour TSP was recorded in this reporting period.
Cumulative statistics are provided in Appendix G.
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 G.
As informed by the Contractor, the major works for the Contract in the coming quarter are summarized below:
Land-based Works
· Bar bending, timber formwork and concreting at Toll Control Building;
· Architectural, Builder’s Work and Finishing and Electrical and Mechanical Works at Ventilation Plant Room;
· Electrical and Mechanical Works at Northern Ventilation Building;
· Socket H-pilling at Administration Building;
· Additional land ground investigation (GI) and socket H-pilling at Maintenance Depot, trial pits and laboratory testing.
October 2018
Land-based Works
· Bar bending, timber formwork and concreting at Toll Control Building;
· Architectural, Builder’s Work and Finishing and Electrical and Mechanical Works at Ventilation Plant Room;
· Electrical and Mechanical Works at Northern Ventilation Building;
· Socket H-pilling at Administration Building;
· Additional land ground investigation (GI) and socket H-pilling at Maintenance Depot, trial pits and laboratory testing.
November 2018
Land-based Works
· Bar bending, timber formwork and concreting at Toll Control Building;
· Architectural, Builder’s Work and Finishing and Electrical and Mechanical Works at Ventilation Plant Room;
· Electrical and Mechanical Works at Northern Ventilation Building;
· Excavation at Administration Building;
· Excavation at Maintenance Depot;
· Pre-drilling and socket H-piling at Customs & Excise Department Building; and
· Trial pits, pre-drilling and socket H-piling at Fire Service Department Building.
Potential environmental impacts arising from the above upcoming construction activities are mainly associated with dust and waste management issues.
This First Quarterly EM&A Report presents the findings of the EM&A activities undertaken during the period from 7 June to 31 August 2018, in accordance with the Updated EM&A Manual and the requirements of EP-354/2009/D.
Air quality (including 1-hour TSP and 24-hour TSP) was carried out in this reporting period.
Two (2) Action Level exceedances for 1-hour TSP were recorded by the Environmental Team of Contract No. HY/2012/08 during the reporting period. The exceedances were considered not related to this Contract upon further investigation and the investigation report is presented in Appendix G. No action is required to be undertaken in accordance with the Event Action Plan as presented in Appendix E.
No exceedance of Action and Limit Levels for 24-hour TSP was recorded in the reporting 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/