EXECUTIVE
SUMMARY
ES01
In August 2014, CRBC-Kaden Joint Venture (hereafter “CRBC-Kaden JV”)
has been awarded the Contract No. HY/2013/12 -Northern Connection Toll Plaza and Tunnel Section of the Tuen Mun – Chek
Lap Kok Link
(hereinafter called “the Contract”) by the Highways Department (HyD). The
construction phase of the Contract was
commenced on 23 October 2014.
ES02
The Project TM-CLKL had been commissioning at
the end of 2020 and the termination proposal for construction EM&A programme was approved by EPD on 23 December 2020. The
construction phase EM&A programme of the Contract
has been terminated since 31 December 2020.
ES03 In view of
the construction works under the Contract, the major construction activities
are land-based. In accordance with
the Project EM&A Manual requirements, environmental aspect monitoring
should be conducted including air quality, ecological (Pitcher plant), cultural
heritage and site inspections during construction period. In addition, landscape and visual
(L&V) monitoring, landfill gas monitoring and audit of the contractor’s
implementation of the construction noise and land-based water quality pollution
control measures are also required for the Contract.
ES04
This is the Final EM&A Report for the “Tuen Mun - Chek Lap Kok Link - Northern
Connection Toll Plaza and Associated Works” under Environmental Permit No. EP-354/2009/D (hereinafter ‘‘the EP’’), covering the construction
phase of the contract from 23 October 2014 to 31 December
2020
(hereinafter “Reporting Period”).
Summary of EM&A activities for the Reporting Period
ES05
In the Reporting Period,
the EM&A activities is summarized in Table ES-02.
Table ES-02 Summary EM&A
Activities Undertaken in the Reporting Period
|
Environmental
Aspect
|
Environmental
Monitoring Parameters / Inspection
|
Total
|
|
|
|
Air Quality
|
1-hour TSP
|
10,845
|
|
|
24-hour TSP
|
3,605
|
|
|
Cultural heritage inspection
|
Grave G1
|
322
|
|
|
Landfill Gas
Monitoring
|
Oxygen; Methane & Carbon Dioxide
|
1,403 days
|
|
|
Landscape
&Visual
|
Landscape
& Visual Monitoring
|
291
|
|
|
Joint Site
Inspection / Audit
|
IEC, ET, the Contractor and RE joint site Environmental Inspection and Auditing
|
322
|
|
Breach
of Action and Limit (A/L) Levels
ES06
In according with the air quality measurement
results by the ET of Contract HY/2012/08 total 94 Action Level, 13 Limit Level exceedances of 1-hour TSP and total 7 Action Level, 3 Limit Level exceedances of 24-hour TSP were recorded in
the Reporting Period
ES07
For landfill gas
monitoring, the concentration of all parameters were detected within the
acceptable levels. Table ES-03 is
summarized breach of environmental performance criteria.
Table ES-03 Action
and Limit (A/L) Levels Breach Summarized in the Reporting Period
|
Environmental Aspect
|
Monitoring Parameters
|
Action Level
|
Limit Level
|
Event & Action
|
|
NOE Issued
|
Investigation
|
Corrective Actions
|
|
Air
Quality
|
1-hour
TSP
|
94
|
13
|
71
|
71
|
0
|
|
24-hour
TSP
|
7
|
3
|
10
|
10
|
0
|
|
Landfill
Gas Monitoring
|
Oxygen
|
0
|
0
|
0
|
0
|
0
|
|
Methane
|
0
|
0
|
0
|
0
|
0
|
|
Carbon
Dioxide
|
0
|
0
|
0
|
0
|
0
|
Environmental
Complaint
ES08
Total 11 complaints received during the Construction
Phase of the contract. The statistics of environmental
complaint is listed in Table ES-04.
Table ES-04 Statistical
Summary of Environmental Complaints
|
Reporting Period
|
Complaint Nature
|
Total Registered
|
|
Water Quality
|
Construction Dust
|
Construction Noise
|
Others
|
|
23 October 2014 – 31 December 2020
|
6
|
4
|
1
|
2
|
11
|
Notification of Summons and Successful Prosecutions
ES09
No environmental summons or successful
prosecutions were recorded in the Reporting Period.
Conclusions
ES10
The construction phase monitoring programme ensured that any environmental impact to the
receivers would be readily detected and timely actions could be taken to
rectify any non-compliance.
Assessment and analysis of monitoring results collected demonstrated the
environmental acceptability of the Project. The regular site inspection and waste
audit ensured that all the mitigation measures on waste management were
effectively implemented.
ES11
The EM&A programme effectively monitored the environmental impacts
from the construction phase of the Project and no particular recommendation was
advised for the improvement of the programme.
ES12
It is considered that
the environmental acceptability of the Contract during the construction phase
was satisfactory and acceptable. In general, the monitoring results were in
line with EIA predictions.
ES13
After terminated of the
construction phase EM&A programme, the
establishment period monitoring for planting works will be carried on till May
2022 to fulfill the EM&A Manual requirement.
able of Contents
1 Introduction 1
1.1 Contract
Background 1
1.2 Report
Structure 1
2 Contract Organization and Construction progress and Environmental Submissions 3
2.1 Contract
Organization 3
2.2 Construction
Progress 3
2.3 Summary of Environmental Submissions 3
3 Summary of Impact Monitoring Requirements Under the Contract 6
3.1 General 6
3.2 Air
Quality Monitoring Parameters 6
3.3 Monitoring
Location 6
3.4 Monitoring Frequency 6
3.5 Derivation
of Action/Limit (A/L) Levels 7
3.6 Other
Environmental Aspects 8
4 Air Quality Monitoring 10
4.1 General 10
4.2 Air
Quality Monitoring Results in Reporting Period 10
4.3 Summary
of Action and Limit (A/L) Levels Exceedance (non-compliance) 10
4.4 Air
Quality Exceedance Investigation 14
5 Ecology Monitoring 15
5.1 General 15
5.2 Pitcher
Plants Inspection 15
6 CULTURAL HERITAGE 16
6.1 General 16
6.2 Grave
Inspection 16
7 LandscAPe and Visual 17
7.1 General 17
7.2 Landscape
and Visual Inspection (Construction Phase) 17
7.3 Establishment
Works Inspection 17
8 Landfill Gas Hazard Monitoring 18
8.1 General 18
8.2 Landfill
Gas Monitoring Result 19
9 Waste Management 20
9.1 General
Waste Management 20
9.2 Records
of Waste Quantities 20
10 Inspection and Auditing 22
10.1 Site
Inspection 22
11 Environmental Complaint and Non-compliance 23
11.1 Environmental
Complaint, Summons and Prosecution 23
11.2 Summary
record of all complaints, action and working procedures 23
12 Implementation Status of Mitigation Measures 26
12.1 General
Requirements 26
13 Conclusions and Recommendations 27
13.1 Conclusions 27
List
of TABLES
Table 2-1 Status of
Environmental Licenses and Permits of the Contract
Table 3-1 Designated Air
Quality Monitoring Stations under the Contract
Table 3-2 Enhanced TSP
Monitoring Plan – Construction Phase
Table 3-3 TSP Action and
Limit Levels for Impact Air Quality Monitoring
Table 3-4 Actions in the
Event of Landfill Gas being Detected in Excavation / Confined Area
Table 4-1 Summary of Air
Quality Monitoring Exceedance
Table 8-1 Landfill Gas
Monitoring Zone
Table 8-2 Summary of
Landfill Gas Measurement Results
Table 9-1 Summary of
Quantities of Inert C&D Materials
Table 9-2 Summary of
Quantities of C&D Wastes
Table 11-1 Statistical Summary of
Environmental Exceedance
Table 11-2 Statistical Summary of
Environmental Complaints
Table 11-3 Statistical Summary of
Environmental Summons
Table 11-4 Statistical Summary of
Environmental Prosecution
Table 12-1 Environmental Mitigation
Measures
List of Appendices
Appendix A Project
Layout Plan
Appendix B Layout Plan of the Contract
Appendix C Organization
of the Contract
Appendix D Monitoring
Locations for the Contract
Appendix E Event
and Action Plan
Appendix F Graphical
Plots
Appendix G Waste
Flow Table
Appendix H Environmental Mitigation Measures
Implementation Schedule (EMMIS)
1.1.1
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.
1.1.2
CRBC-Kaden Joint Venture (hereafter
“CRBC-Kaden JV”) is commissioned by the Highways Department (HyD) as the Main Contractor of the Contract No. HY/2013/12 – Northern Connection Toll Plaza and
Tunnel Section ((hereafter “the Contract”) and this Contract is part of the Tuen Mun – Chek
Lap Kok Link (TM-CLK Link Project). TM-CLK Link Project is a Designated
Project under the latest Environmental Permit number EP-354/2009/D issued on 13 March
2015. The layout
Plan of the Project and the Contract are showed in Appendix A and Appendix B respectively.
1.1.3
AECOM Asia Company Limited as the Resident
Engineer (RE) and Ramboll Hong Kong Limited as the
Independent Environmental Checker (IEC) and Environmental Project Office (ENPO)
were employed by the HyD. For implementation of the environmental
monitoring and audit (EM&A) programme under the Contract, CRBC-Kaden JV has
appointed Action-United Environmental Services & Consulting (AUES) as the
Environmental Team (ET) to responsible relevant environmental monitoring work.
1.1.4
Construction phase of the Contract was commenced
on 23 October 2014. According to the approved EM&A Manual, the impact
monitoring for the EM&A programme including air
quality, ecological monitoring, cultural heritage monitoring, landscape and
visual monitoring, landfill gas hazard monitoring and environmental site
inspections.
1.1.5
The Project TM-CLKL had been commissioning at
the end of 2020 and the termination proposal for construction EM&A programme was approved by EPD on 23 December 2020. The
construction phase EM&A programme of the Contract
has been terminated since 31 December 2020.
1.1.6
This is the Final EM&A Report to summarize
the monitoring results and inspection findings with the Contractor performance during
the construction period from 23 October 2014 to 31 December 2020 (hereinafter
“Reporting Period”).
1.2.1
The Final Environmental Monitoring and Audit
(EM&A) Report is structured into the following sections:-
Section 1 Introduction
Section 2 Contract
Organization and Construction Progress and Environmental Submissions
Section 3 Summary
of Impact Monitoring Requirements under the Contract
Section 4 Air
Quality Monitoring
Section 5 Ecology
Monitoring
Section 6 Cultural
Heritage
Section 7 Landscape
and Visual
Section 8 Landfill
gas hazard Monitoring
Section 9 Waste
Management
Section 10 Inspection and Auditing
Section 11 Environmental Complaint and Non-Compliance
Section 12 Implementation
Status of Mitigation Measures
Section 13 Conclusions
and Recommendations
2.1.1
The Contract organization and contact details
of key personnel are shown in Appendix C.
2.2.1
The major construction activity conducted
under the Contract is summarized in below.
a.
construction of an approximately 5.4 hectares
toll plaza and an associated footbridge;
b.
construction of associated carriageways
including approximately 0.74 kilometre land viaducts,
and an approximately 230 metres vehicular underpass
to connect the toll plaza and the roundabout at Lung Mun
Road/Lung Fu Road;
c.
site formation for the construction of the
toll plaza, including associated slope works and natural terrain hazard
mitigation measures;
d.
modification and realignment of the existing
Lung Mun Road and Lung Fu Road; and
e.
associated
waterworks, drainage, sewerage and landscaping works, etc..
2.3
Summary of Environmental Submissions
2.3.1
In according to the EP, the required
documents have submitted to EPD for retention which listed in below:
Ÿ
Monitoring Plan on construction dust
Ÿ
Landscape and Visual Plan
Ÿ
Waste Management Plan
Ÿ
Baseline Monitoring Report
2.3.2
Summary of
the relevant permits, licenses, and/or notifications on environmental
protection as obtained by the Contract in the reporting period is presented in Table 2-1.
Table 2-1 Status of Environmental
Licenses and Permits of the Contract
|
No.
|
Type of Permit/ License
|
Reference/
License No.
|
Date of Issue
|
Date of Expiry
|
|
1
|
Air pollution
Control (Construction Dust) Regulation
|
377719
|
06-08-2014
|
N/A
|
|
2
|
Chemical Waste
Producer Registration - Waste Producers Number
|
5117422C389301
|
03-09-2014
|
N/A
|
|
3
|
Water Pollution Control Ordinance –Original / Variation of Effluent
Discharge License
|
WT00020065-2014
|
29-09-2014
|
30-09-2019
|
|
WT00023973-2016
|
25-10-2017
|
30-09-2019
|
|
4
|
Waste Disposal
Regulation - Billing Account for Disposal of Construction Waste
|
7020460
|
01-08-2014
|
N/A
|
|
5
|
Permission to Transplant Pitcher Plant
|
(7) in AF CON 11/13 pt.4
|
09-12-2014
|
08-06-2015
|
|
(30) in AF CON
11/13 pt.4
|
23-6-2015
|
22-12-2015
|
|
6
|
CNP for
Construction of Site Office
|
GW-RW0656-14
|
03-09-2014
|
22-02-2015
|
|
7
|
CNP for Site
Formation
|
GW-RW0761-14
|
29-09-2014
|
29-03-2015
|
|
8
|
CNP for Concreting
|
GW-RW0748-14
|
29-09-2014
|
29-03-2015
|
|
9
|
CNP for Multiple
Task
|
GW-RW0949-14
|
05-12-2014
|
04-05-2015
|
|
GW-RW0225-15
|
13-05-2015
|
04-11-2015
|
|
GW-RW0520-15
|
05-11-2015
|
04-05-2016
|
|
GW-RW0520-16
|
05-05-2016
|
04-11-2016
|
|
GW-RW0619-16
|
05-11-2016
|
04-05-2017
|
|
GW-RW0230-17
|
08-05-2017
|
04-11-2017
|
|
GW-RW0605-17
|
25-11-2017
|
24-05-2018
|
|
GW-RW0154-18
|
25-05-2018
|
24-11-2018
|
|
GW-RW0480-18
|
25-11-2018
|
24-05-2019
|
|
GW-RW0230-19
|
30-05-2019
|
24-11-2019
|
|
GW-RW0555-19
|
25-11-2019
|
23-05-2020
|
|
GW-RW0202-20
|
24-05-2020
|
23-11-2020
|
|
GW-RW0532-20
|
24-11-2020
|
23-05-2021
|
|
10
|
CNP for GI works
|
GW-RW0134-15
|
16-03-2015
|
07-04-2015
|
|
11
|
CNP for MH5
|
GW-RW0226-15
|
18-05-2015
|
17-11-2015
|
|
GW-RW0563-15
|
18-11-2015
|
17-05-2016
|
|
GW-RW0563-16
|
18-05-2016
|
17-11-2016
|
|
GW-RW0650-16
|
18-11-2016
|
17-05-2017
|
|
GW-RW0242-17
|
22-05-2017
|
17-11-2017
|
|
12
|
CNP for Tunnel
|
GW-RW0582-15
|
23-11-2015
|
22-05-2016
|
|
GW-RW0582-16
|
23-05-2016
|
22-11-2016
|
|
GW-RW0653-16
|
23-11-2016
|
22-05-2017
|
|
GW-RW0243-17
|
23-05-2017
|
22-11-2017
|
|
GW-RW0567-17
|
26-10-2017
|
22-05-2018
|
|
GW-RW0140-18
|
23-05-2018
|
22-11-2018
|
|
GW-RW0478-18
|
23-11-2018
|
22-05-2019
|
|
13
|
CNP for falsework
erection
|
GW-RW0076-16
|
15-02-2016
|
21-04-2016
|
|
GW-RW0215-16
|
26-04-2016
|
21-06-2016
|
|
GW-RW0289-16
|
22-06-2016
|
19-08-2016
|
|
GW-RW0472-16
|
22-08-2016
|
21-12-2016
|
|
GW-RW0724-16
|
28-12-2016
|
16-03-2017
|
|
GW-RW0117-17
|
09-03-2017
|
16-06-2017
|
|
GW-RW0205-17
|
25-04-2017
|
25-11-2017
|
|
GW-RW0563-17
|
26-10-2017
|
24-02-2018
|
|
GW-RW0066-18
|
26-02-2018
|
19-05-2018
|
|
14
|
CNP for Portion H
|
GW-RW0704-16
|
06-12-2016
|
21-02-2017
|
|
GW-RW0049-17
|
14-02-2017
|
18-08-2017
|
|
GW-RW0242-17
|
22-05-2017
|
17-11-2017
|
|
GW-RW0568-17
|
26-10-2017
|
22-05-2018
|
|
GW-RW0155-18
|
25-05-2018
|
17-11-2018
|
|
GW-RW0479-18
|
18-11-2018
|
17-05-2019
|
|
GW-RW0203-19
|
18-05-2019
|
17-11-2019
|
|
GW-RW0556-19
|
25-11-2019
|
17-05-2020
|
|
GW-RW0201-20
|
18-05-2020
|
16-11-2020
|
|
15
|
CNP for Road Paving
Works
|
GW-RW0211-17
|
25-04-2017
|
01-11-2017
|
|
GW-RW0561-17
|
26-10-2017
|
01-02-2018
|
|
GW-RW0044-18
|
01-02-2018
|
28-04-2018
|
|
16
|
CNP for Lung Mun Road
|
GW-RW0174-18
|
20-05-2018
|
12-08-2018
|
|
GW-RW0334-18
|
13-08-2018
|
17-11-2018
|
|
GW-RW0475-18
|
19-11-2018
|
02-12-2018
|
|
GW-RW0530-18
|
25-12-2018
|
02-03-2019
|
|
GW-RW0103-19
|
15-03-2019
|
30-04-2019
|
|
GW-RW0200-19
|
16-05-2019
|
05-06-2019
|
|
GW-RW0344-19
|
27-07-2019
|
01-10-2019
|
|
GW-RW0491-19
|
11-10-2019
|
15-12-2019
|
|
GW-RW0004-20
|
09-01-2020
|
14-03-2020
|
|
GW-RW0123-20
|
27-03-2020
|
14-05-2020
|
|
GW-RW0261-20
|
12-06-2020
|
16-08-2020
|
|
GW-RW0382-20
|
04-09-2020
|
13-11-2020
|
|
GW-RW0506-20
|
13-11-2020
|
18-12-2020
|
|
17
|
CNP for Lung Fu
Road
|
GW-RW0135-18
|
02-05-2018
|
27-07-2018
|
|
GW-RW0289-18
|
30-07-2018
|
27-10-2018
|
|
GW-RW0436-18
|
29-10-2018
|
01-12-2018
|
|
GW-RW0531-18
|
27-12-2018
|
02-03-2019
|
|
GW-RW0162-19
|
17-04-2019
|
05-06-2019
|
|
GW-RW0341-19
|
26-07-2019
|
28-09-2019
|
|
GW-RW0490-19
|
11-10-2019
|
14-12-2019
|
|
GW-RW0005-20
|
10-01-2020
|
26-03-2020
|
|
GW-RW0130-20
|
08-04-2020
|
24-06-2020
|
|
GW-RW0287-20
|
03-07-2020
|
09-09-2020
|
|
GW-RW0423-20
|
22-09-2020
|
06-11-2020
|
|
18
|
CNP for Lung Fu Road (Out of site boundary)
|
GW-RW0381-20
|
04-09-2020
|
27-09-2020
|
Note:
CNP is Control Noise Permit
3.1.1
In view of the
construction works under the Contract, the major construction activities are
land-based. In accordance with the
Project EM&A Manual requirements, environmental aspect monitoring should be
conducted including air quality, ecological (Pitcher plant), cultural heritage
and site inspections during construction period. In addition, landscape
and visual (L&V) monitoring, landfill gas monitoring and audit of the
contractor’s implementation of the construction noise and land-based water
quality pollution control measures are also required for the Contract.
3.1.2
A summary of construction phase EM&A
requirements are presented in the
sub-sections below.
3.2.1
The construction phase air quality monitoring
shall cover the following parameters:
•
1-hour TSP; and
•
24-hour TSP
3.3.1
The air quality monitoring stations for impact monitoring are listed in Table 3.1 and illustrated in Appendix
D.
Table 3-1 Designated
Air Quality Monitoring Stations under the Contract
|
ID
|
Location
|
Air monitoring station Description
|
|
ASR1
|
Tuen Mun Fireboat Station
|
EM&A Manual
|
|
ASR5
|
Pillar Point Fire Station
|
EM&A Manual
|
|
AQMS1
|
Previous River Trade Golf
|
Enhanced TSP Level under EP
condition 2.4
|
|
ASR6
|
Butterfly Beach Laundry
|
Enhanced TSP Level under EP
condition 2.4
|
|
ASR10
|
Butterfly Beach Park
|
Enhanced TSP Level under EP
condition 2.4
|
General Requirement
3.4.1
For regular impact monitoring, the sampling frequency of at least once
in every six days shall be strictly observed at five of the designated
monitoring stations for 24-hr TSP monitoring. For 1-hr TSP monitoring, the sampling
frequency of at least three times in every six days should be undertaken at
five locations when the highest dust impact occurs. The stations to be monitored should be
selected based on the prevailing wind direction and their proximity to the
active construction works.
Special Requirement
3.4.2
As per Condition 2.4 of
the EP of TM-CLKL, an enhanced monitoring plan on TSP level at Tuen Mun (“the
Enhanced TSP Monitoring Plan”) is required to be submitted to the DEP for
approval at least 1 month before the commencement of construction of the Project.
Details of the Enhanced TSP
Monitoring Plan under Contract No. HY/2012/08 could be found from the project
website. The
air quality monitoring work under this Contract will follow the monitoring
requirement of enhanced TSP monitoring under the project.
3.4.3
The air quality
monitoring requirements for the Contract is shown in Table 3-2.
Table 3-2 Enhanced TSP Monitoring Plan –
Construction Phase
|
Condition
|
Monitoring
Parameter
|
Monitoring
Location
|
Frequency
|
Monitoring Requirement
|
|
General
|
1-hour TSP
|
ASR1, ASR5, AQMS1, ASR6, ASR10
|
3 times per day every six days
|
Throughout the Northern Connection, toll plaza and tunnel buildings
construction works
|
|
24-hour TSP
|
ASR1, ASR5, AQMS1, ASR6, ASR10
|
Daily every six days
|
|
Special
|
1-hour TSP
|
ASR1, ASR5, AQMS1, ASR6, ASR10
|
3 times per day every three days
|
Northern Connection
During excavation works for launching shaft, excavation work for Cut and
Cover Tunnel and Cut and Cover Tunnel Construction
Toll Plaza
During excavation, slope works, construction of road and superstructures
and wind erosion from open sites and stockpiling areas
Tunnel Buildings
During excavation, foundation works, construction of superstructures and
wind erosion from open sites and stockpiling areas
|
|
24-hour TSP
|
ASR1, ASR5, AQMS1, ASR6, ASR10
|
Daily every three days
|
3.5.1
The baseline monitoring
results formed the basis for determining the air quality criteria for the
impact monitoring. The ET shall compare the impact monitoring results with air
quality criteria set up for 24-hour TSP and 1-hour TSP. Based on results of the approved
Baseline Monitoring Report of HyD Contract
HY/2012/08, the proposed Action and Limit Levels are shown in Tables
3-3.
Table
3-3 TSP
Action and Limit Levels for Impact Air Quality Monitoring
|
Air Quality Monitoring Stations
|
24-hour TSP (μg/m3)
|
1-hour TSP (μg/m3)
|
|
Action Level
|
Limit Level
|
Action Level
|
Limit Level
|
|
ASR1
|
213
|
260
|
331
|
500
|
|
ASR5
|
238
|
260
|
340
|
500
|
|
AQMS1
|
213
|
260
|
335
|
500
|
|
ASR6
|
238
|
260
|
338
|
500
|
|
ASR10
|
214
|
260
|
337
|
500
|
3.5.2
Should non-compliance of the environmental
quality criteria occurs, remedial actions will be triggered according to the
Event and Action Plan which presented in Appendix E.
Noise
3.6.1
The TM-CLKL EIA study
concluded that no existing noise sensitive receiver (NSR) was identified within
the Study Area at Tuen Mun.
Therefore, no planned NSR designated at the Project sites of Tuen Mun. Based upon this, no noise monitoring is
necessary for construction phase under the Contract.
3.6.2
Regular site inspections
and audits will be carried out during the construction phase in order to
confirm compliance with the regulatory requirements and conformity of the
Contractor with regard to noise control and contract conditions.
Water Quality
3.6.3
No marine works will be
undertaken under the Contract.
Based upon this, no water quality monitoring is necessary for
construction phase.
Ecology
3.6.4
Since the Works of the Contract
would not generate marine ecological impact, no dolphin monitoring under
the Contract was conducted.
3.6.5
During construction phase, the ET will
perform Pitcher Plants inspection at least once every week to report the growth
condition (only undertaken at Establish
period) and protection measures.
Landscape and Visual
3.6.6
According to EIA recommendation,
site inspection and audit
shall be required to be undertaken in the operation stage. Measures
to mitigate landscape
and visual impacts during construction should be checked and monitored by a
Registered Landscape Architect to ensure compliance with the intended aims of
the mitigation measures in accordance with the EM&A
Manual.
Cultural Heritage
3.6.7
Grave G1 of heritage resources is situated near the proposed
toll plaza in Tuen Mun. Site inspections should be
undertaken at least once per week throughout the construction period to ensure
compliance with the intended aims of recommended mitigation measures.
Monitoring and
Measurement of Landfill Gas
3.6.8
During EIA study,
landfill gas hazards are likely to be generated from the Pillar Point Valley (PPV)
Landfill. Hence, regular landfill gas monitoring is recommended during
construction of the proposed toll plaza. Safety Officer or an approved and
appropriated qualified person should be carried out the monitoring works to
make sure the area free of landfill gas before any man enters in the area.
3.6.9
Depending on the results of the measurements, actions
required will vary and should be set down by the Safety Officer or other appropriately
qualified person. As a minimum these should encompass those actions specified
as follow:
Table 3-4 Actions in the Event of Landfill Gas
being Detected in Excavation / Confined Area
|
Parameter
|
Measurement
|
Action
|
|
Oxygen
|
<
19%
|
-
Ventilate to restore oxygen to > 19%
|
|
<
18%
|
- Stop work
- Evacuate personnel /
prohibit entry
-
Increase ventilation to restore to > 19%
|
|
Methane
|
> 10% LEL (> 0.5%
v/v)
|
- Prohibit hot work
- Ventilate to restore
methane to < 10% LEL
|
|
> 20% LEL (>1%
v/v)
|
- Stop work
- Evacuate personnel /
prohibit entry
-
Increase ventilation to restore to < 10%
|
|
Carbon Dioxide
|
>
0.5%
|
-
Ventilate to restore oxygen to < 0.5%
|
|
>
1.5%
|
- Stop work
- Evacuate personnel /
prohibit entry
-
Increase ventilation to restore to < 0.5%
|
4.1.1
According
to the Updated EM&A Manual and the Enhanced Total Suspended Particulates
(TSP) Monitoring Plan, the air quality impact monitoring was conducted at the
five air quality monitoring stations during the Reporting Period by the ET of
Contract HY/2012/08. Sharing of impact air quality monitoring
data between HY/2012/08 and HY/2013/12 is agreed by all relevant parties. Therefore the Contract is not required
to conduct its own dust monitoring exercise until the Contract HY/2012/08 is
ended.
4.2.1
In the Reporting Period (construction phase),
total 10,845 of 1-hr TSP measurements and 3,605 events of 24-hours TSP
monitoring at five proposed locations were carried out by the ET of Contract
HY/2012/08. Detailed air quality
monitoring results and statistical analysis of the trends of air quality data
during the Reporting Period can be referred to the Monthly EM&A Reports
(from November 2014 to December 2020).
4.3.1
According to the air quality monitoring
result provided by Contract HY/2012/08, total 94 Action Level, 13 Limit Level exceedances of 1-hour TSP and total 7 Action Level, 3 Limit Level exceedances of 24-hour TSP were recorded in
the Reporting Period. Notification of Exceedances (NOEs) were issued after receiving
the monitoring result from the Contract HY/2012/08. The summary of air quality exceedance is
shown in Table 4-1.
Table 4-1 Summary
of Air Quality Monitoring Exceedance
|
Date of Exceedance
|
Monitoring Station
|
Air Quality
Parameter
|
Result
|
Exceed
|
Contract Related
|
|
14 November 2014
|
ASR1
|
1-hour TSP
|
404μg/m3
|
Action Level
|
No
|
|
14 November 2014
|
ASR1
|
1-hour TSP
|
396μg/m3
|
Action Level
|
No
|
|
2 December 2014
|
ASR5
|
1-hour TSP
|
346μg/m3
|
Action Level
|
No
|
|
17 December 2014
|
AQMS1
|
1-hour TSP
|
348μg/m3
|
Action Level
|
No
|
|
29 July 2017
|
ASR5
|
1Hr TSP
|
370 µg/m3
|
Action Level
|
No
|
|
29 July 2017
|
ASR6
|
1Hr TSP
|
401 µg/m3
|
Action Level
|
No
|
|
29 July 2017
|
ASR10
|
1Hr TSP
|
475 µg/m3
|
Action Level
|
No
|
|
22 August 2017
|
ASR1
|
1Hr TSP
|
360 µg/m3
|
Action Level
|
No
|
|
12 September
2017
|
ASR1
|
1Hr TSP
|
332 µg/m3
|
Action Level
|
No
|
|
12 September
2017
|
ASR1
|
1Hr TSP
|
545 µg/m3
|
Limit Level
|
No
|
|
12 September
2017
|
ASR1
|
1Hr TSP
|
413 µg/m3
|
Action Level
|
No
|
|
12 September
2017
|
ASR5
|
1Hr TSP
|
367 µg/m3
|
Action Level
|
No
|
|
18 September
2017
|
AQMS1
|
1Hr TSP
|
473 µg/m3
|
Action Level
|
No
|
|
27 September
2017
|
ASR5
|
1Hr TSP
|
355 µg/m3
|
Action Level
|
No
|
|
27 September
2017
|
ASR5
|
1Hr TSP
|
456 µg/m3
|
Action Level
|
No
|
|
21 October 2017
|
ASR1
|
1Hr TSP
|
372 µg/m3
|
Action Level
|
No
|
|
21 October 2017
|
ASR1
|
1Hr TSP
|
439 µg/m3
|
Action Level
|
No
|
|
27 October 2017
|
ASR5
|
1Hr TSP
|
368 µg/m3
|
Action Level
|
No
|
|
27 October 2017
|
ASR6
|
1Hr TSP
|
388 µg/m3
|
Action Level
|
No
|
|
2 November 2017
|
ASR5
|
1Hr TSP
|
351 µg/m3
|
Action Level
|
No
|
|
2 November 2017
|
ASR10
|
1Hr TSP
|
403 µg/m3
|
Action Level
|
No
|
|
2 November 2017
|
ASR10
|
1Hr TSP
|
816 µg/m3
|
Limit Level
|
No
|
|
11 November 2017
|
ASR5
|
1Hr TSP
|
389 µg/m3
|
Action Level
|
No
|
|
29 November 2017
|
ASR10
|
1Hr TSP
|
455 µg/m3
|
Action Level
|
No
|
|
8 December 2017
|
ASR5
|
1Hr TSP
|
353 µg/m3
|
Action Level
|
No
|
|
11 December 2017
|
ASR1
|
1Hr TSP
|
399 µg/m3
|
Action Level
|
No
|
|
11 December 2017
|
ASR1
|
1Hr TSP
|
443 µg/m3
|
Action Level
|
No
|
|
11 December 2017
|
ASR5
|
1Hr TSP
|
417 µg/m3
|
Action Level
|
No
|
|
20 December 2017
|
ASR1
|
1Hr TSP
|
357 µg/m3
|
Action Level
|
No
|
|
20 December 2017
|
ASR5
|
1Hr TSP
|
372 µg/m3
|
Action Level
|
No
|
|
26 December 2017
|
ASR1
|
1Hr TSP
|
407 µg/m3
|
Action Level
|
No
|
|
13 January 2018
|
ASR5
|
1Hr TSP
|
345 µg/m3
|
Action Level
|
No
|
|
16 January 2018
|
ASR5
|
1Hr TSP
|
396 µg/m3
|
Action Level
|
No
|
|
16 January 2018
|
ASR5
|
1Hr TSP
|
384 µg/m3
|
Action Level
|
No
|
|
16 January 2018
|
ASR5
|
1Hr TSP
|
345 µg/m3
|
Action Level
|
No
|
|
22 January 2018
|
ASR5
|
1Hr TSP
|
363 µg/m3
|
Action Level
|
No
|
|
22 January 2018
|
ASR5
|
1Hr TSP
|
380 µg/m3
|
Action Level
|
No
|
|
3 February 2018
|
ASR1
|
1Hr TSP
|
392 µg/m3
|
Action Level
|
No
|
|
3 February 2018
|
ASR5
|
1Hr TSP
|
455 µg/m3
|
Action Level
|
No
|
|
2 March 2018
|
ASR1
|
1Hr TSP
|
460 µg/m3
|
Action Level
|
No
|
|
20 March 2018
|
ASR1
|
1Hr TSP
|
446 µg/m3
|
Action Level
|
No
|
|
13 April 2018
|
ASR5
|
1Hr TSP
|
389 µg/m3
|
Action Level
|
No
|
|
26 August 2018
|
ASR1
|
1Hr TSP
|
417 µg/m3
|
Action Level
|
No
|
|
29 August 2018
|
ASR1
|
1Hr TSP
|
403 µg/m3
|
Action Level
|
No
|
|
7 September 2018
|
ASR1
|
1Hr TSP
|
392 µg/m3
|
Action Level
|
No
|
|
28 September
2018
|
ASR1
|
1Hr TSP
|
584 µg/m3
|
Limit Level
|
No
|
|
28 September
2018
|
ASR1
|
1Hr TSP
|
417 µg/m3
|
Action Level
|
No
|
|
4 October 2018
|
ASR1
|
1Hr TSP
|
340 µg/m3
|
Action Level
|
No
|
|
10 October 2018
|
ASR1
|
1Hr TSP
|
451 µg/m3
|
Action Level
|
No
|
|
31 October 2018
|
ASR1
|
1Hr TSP
|
371 µg/m3
|
Action Level
|
No
|
|
6 November 2018
|
ASR1
|
1Hr TSP
|
376 µg/m3
|
Action Level
|
No
|
|
12 November 2018
|
ASR1
|
1Hr TSP
|
395 µg/m3
|
Action Level
|
No
|
|
12 November 2018
|
ASR5
|
1Hr TSP
|
371 µg/m3
|
Action Level
|
No
|
|
12 November 2018
|
ASR5
|
1Hr TSP
|
425 µg/m3
|
Action Level
|
No
|
|
12 November 2018
|
ASR5
|
1Hr TSP
|
377 µg/m3
|
Action Level
|
No
|
|
12 November 2018
|
ASR6
|
1Hr TSP
|
343 µg/m3
|
Action Level
|
No
|
|
9 December 2018
|
ASR1
|
1Hr TSP
|
346 µg/m3
|
Action Level
|
No
|
|
12 December 2018
|
ASR1
|
1Hr TSP
|
414 µg/m3
|
Action Level
|
No
|
|
18 December 2018
|
ASR6
|
1Hr TSP
|
478 µg/m3
|
Action Level
|
No
|
|
8 January 2019
|
ASR5
|
1Hr TSP
|
354 µg/m3
|
Action Level
|
No
|
|
11 January 2019
|
ASR1
|
1Hr TSP
|
335 µg/m3
|
Action Level
|
No
|
|
11 January 2019
|
ASR5
|
1Hr TSP
|
398 µg/m3
|
Action Level
|
No
|
|
17 January 2019
|
ASR1
|
1Hr TSP
|
519 µg/m3
|
Limit Level
|
No
|
|
17 January 2019
|
ASR5
|
1Hr TSP
|
354 µg/m3
|
Action Level
|
No
|
|
26 January 2019
|
ASR5
|
1Hr TSP
|
399 µg/m3
|
Action Level
|
No
|
|
27 March 2019
|
ASR1
|
1Hr TSP
|
412 µg/m3
|
Action Level
|
No
|
|
30 March 2019
|
ASR1
|
1Hr TSP
|
374 µg/m3
|
Action Level
|
No
|
|
11 May 2019
|
ASR1
|
1Hr TSP
|
339 µg/m3
|
Action Level
|
No
|
|
23 May 2019
|
ASR1
|
1Hr TSP
|
408 µg/m3
|
Action Level
|
No
|
|
10 July 2019
|
ASR6
|
1Hr TSP
|
372 µg/m3
|
Action Level
|
No
|
|
28 July 2019
|
ASR1
|
1Hr TSP
|
646 µg/m3
|
Limit Level
|
No
|
|
28 July 2019
|
ASR5
|
1Hr TSP
|
410 µg/m3
|
Action Level
|
No
|
|
20 September
2019
|
ASR1
|
1Hr TSP
|
539 µg/m3
|
Limit Level
|
No
|
|
14 October 2019
|
ASR1
|
1Hr TSP
|
363 µg/m3
|
Action Level
|
No
|
|
17 October 2019
|
ASR1
|
1Hr TSP
|
354 µg/m3
|
Action Level
|
No
|
|
17 October 2019
|
ASR1
|
1Hr TSP
|
385 µg/m3
|
Action Level
|
No
|
|
4 November 2019
|
ASR1
|
1Hr TSP
|
626 µg/m3
|
Limit Level
|
No
|
|
4 November 2019
|
ASR5
|
1Hr TSP
|
398 µg/m3
|
Action Level
|
No
|
|
7 November 2019
|
ASR5
|
1Hr TSP
|
479 µg/m3
|
Action Level
|
No
|
|
28 November 2019
|
ASR1
|
1Hr TSP
|
577 µg/m3
|
Limit Level
|
No
|
|
28 November 2019
|
ASR1
|
1Hr TSP
|
452 µg/m3
|
Action Level
|
No
|
|
28 November 2019
|
ASR1
|
1Hr TSP
|
385 µg/m3
|
Action Level
|
No
|
|
28 November 2019
|
ASR5
|
1Hr TSP
|
534 µg/m3
|
Limit Level
|
No
|
|
28 November 2019
|
ASR5
|
1Hr TSP
|
500 µg/m3
|
Action Level
|
No
|
|
1 December 2019
|
ASR1
|
1Hr TSP
|
747 µg/m3
|
Limit Level
|
No
|
|
1 December 2019
|
ASR5
|
1Hr TSP
|
377 µg/m3
|
Action Level
|
No
|
|
1 December 2019
|
ASR10
|
1Hr TSP
|
407 µg/m3
|
Action Level
|
No
|
|
4 December 2019
|
ASR1
|
1Hr TSP
|
366 µg/m3
|
Action Level
|
No
|
|
4 December 2019
|
ASR5
|
1Hr TSP
|
380 µg/m3
|
Action Level
|
No
|
|
12 March 2020
|
ASR5
|
1Hr TSP
|
356 µg/m3
|
Action Level
|
No
|
|
8 April 2020
|
ASR1
|
1Hr TSP
|
357 µg/m3
|
Action Level
|
No
|
|
8 April 2020
|
ASR1
|
1Hr TSP
|
457 µg/m3
|
Action Level
|
No
|
|
8 April 2020
|
ASR5
|
1Hr TSP
|
384 µg/m3
|
Action Level
|
No
|
|
14 April 2020
|
ASR1
|
1Hr TSP
|
673 µg/m3
|
Limit Level
|
No
|
|
13 June 2020
|
ASR6
|
1Hr TSP
|
357 µg/m3
|
Action Level
|
No
|
|
13 August 2020
|
ASR1
|
1Hr TSP
|
352 µg/m3
|
Action Level
|
No
|
|
11 September 2020
|
ASR6
|
1Hr TSP
|
499 µg/m3
|
Action Level
|
No
|
|
11 September 2020
|
ASR6
|
1Hr TSP
|
1454 µg/m3
|
Limit Level
|
No
|
|
9 October 2020
|
ASR5
|
1Hr TSP
|
373 µg/m3
|
Action Level
|
No
|
|
21 October 2020
|
ASR1
|
1Hr TSP
|
494 µg/m3
|
Action Level
|
No
|
|
21 October 2020
|
ASR5
|
1Hr TSP
|
474 µg/m3
|
Action Level
|
No
|
|
21 October 2020
|
ASR6
|
1Hr TSP
|
352 µg/m3
|
Action Level
|
No
|
|
6 November 2020
|
ASR1
|
1Hr TSP
|
887 µg/m3
|
Limit Level
|
No
|
|
12 November 2020
|
ASR1
|
1Hr TSP
|
474 µg/m3
|
Action Level
|
No
|
|
12 November 2020
|
ASR5
|
1Hr TSP
|
433 µg/m3
|
Action Level
|
No
|
|
12 November 2020
|
ASR6
|
1Hr TSP
|
358 µg/m3
|
Action Level
|
No
|
|
10 December 2020
|
ASR5
|
1Hr TSP
|
348 µg/m3
|
Action Level
|
No
|
|
21 October 2017
|
ASR1
|
24Hr TSP
|
220 µg/m3
|
Action Level
|
No
|
|
8 December 2017
|
ASR1
|
24Hr TSP
|
328 µg/m3
|
Limit Level
|
No
|
|
8 December 2017
|
ASR5
|
24Hr TSP
|
279 µg/m3
|
Limit Level
|
No
|
|
11 December 2017
|
ASR1
|
24Hr TSP
|
218 µg/m3
|
Action Level
|
No
|
|
17 December 2017
|
ASR5
|
24Hr TSP
|
265 µg/m3
|
Limit Level
|
No
|
|
29 December 2017
|
ASR10
|
24Hr TSP
|
250µg/m3
|
Action Level
|
No
|
|
16 February 2019
|
ASR1
|
24Hr TSP
|
237 µg/m3
|
Action Level
|
No
|
|
23 May 2019
|
ASR1
|
24Hr TSP
|
217 µg/m3
|
Action Level
|
No
|
|
2 November 2020
|
ASR1
|
24Hr TSP
|
244 µg/m3
|
Action Level
|
No
|
|
6 November 2020
|
ASR1
|
24Hr TSP
|
214 µg/m3
|
Action Level
|
No
|
4.4.1
Investigation for the 1-hour and 24-hour TSP exceedance was undertaken upon received the monitoring results by the ET.
4.4.2
For the exceednances in the reporting period,
the investigation reports were submitted to all relevant parties and concluded
that those exceedances are unlikely related to the Contract work and no
corrective action was required accordingly. The detailed investigation reports and findings can
be referred to the Monthly EM&A
Reports of the contract.
5.1.1
According to the EM&A Manual
requirements, regularly inspection for Pitcher Plants at least once every week to report it growth and protection
measure situation shall be conducted
during construction period.
5.1.2
Permission for
transplantation of Pitcher Plant was issued by the AFCD on 9th
December 2014. 280 numbers of Pitcher Plant individuals located at Zones 1 - 7 were transplanted to the
nursery site on 17th December 2014 by the accredited person and his
assistant. The transplantation work was strictly followed to conditions on
permit.
5.1.3
Trial transplantation of pitcher plant from
the nursery site to final receptor site which located near
Zone 9 and Zone 10 was carried
out on 15 April 2015 and a total of 5% pitcher plant was transplanted. Transplantation of
remaining 95% pitcher plant from the nursery site to final receptor site was
completed on 10th
September 2015.
5.1.4
Total 181 pitcher plants
were transplanted to final receptor site and the rest of the Pitcher Plant
individuals (certified dead by the specialist) were not transplanted and were
treated as general refuse. All the transplantation of pitcher plant from the
nursery site to final receptor site was completed on 10th September
2015. The layout plan for the final receptor site is illustrated in Appendix D.
5.2.1
A total 322 occasions of inspection were
carried out by the Contractor and ET during the Reporting Period.
5.2.2
During weekly site inspection at the nursery
zone before the transplantation to the receptor site, the transplanted Pitcher Plants in the
nursery zone were observed in fair to poor condition. At the
final receptor site, all the
transplanted Pitcher Plants were protected properly and the growth also was in
fair to poor condition.
5.2.3
Establishment period for the pitcher plants was completed
at the end of September 2016, the join site completion of Establishment period
visit with AFCD was undertaken on 23 September 2016 and the final pitcher
plants report was submitted to AFCD on early December
2016. Therefore after 23 September 2016, only the integrity of the protection
fence was checked to fulfill the EIA requirement. During each inspection, the protection
mitigation measures were
checking at the final receptor area to make sure no site activities was
undertaken inside the protection zone. Besides, no construction activities were observed to be carried
out at the surrounding of the final receptor area. The condition of chain link fence is
good and no repair or maintenance is required.
5.2.4
No matters the completion of establish period, the
Contractor should properly maintain the fencing along the receptor area to
avoid disturbance to the pitcher plants under the EIA requirement.
6.1.1
According to the EM&A Manual
requirements, regular inspection for heritage resource Grave G1 shall be
audited by the ET at least once every week to ensure recommended mitigation
measures implemented during construction period. The aim of the survey is prevention of
any possible damage to the grave and to ensure that proposed mitigation
measures are implemented. The broad scope of the audit will involve supervision
of the following:
Ÿ
Non-contact effects of the
engineering works, such as vibration from pneumatic drills which could cause
damage, such as foundation or wall cracks and loosening of tiles or fixtures;
and
Ÿ
Contact between the historic
structures and equipment and materials associated with the engineering works.
6.1.2
Specifically, the
monitoring programme will entail the following tasks:
Ÿ
The extent of the agreed
works areas should be regularly checked during the construction phase to ensure
the buffer is being maintained; and
Ÿ
Ensure no stockpiling or
equipment storage is affecting the structure.
6.1.3
In the event of non-compliance
the responsibilities of the relevant parties is detailed in the Event/ Action Plan
in Appendix E.
6.2.1
In this Reporting Period, there are total 322 occasions to carry out the Grave
G1 inspection. During site
inspection, buffer zone was observed between the working area
and the Grave and no construction material or equipment was stored nearby the
Grave throughout the construction period.
7.1.1
According to EM&A
Manual requirements, monitoring of Contractor’s operations during construction
period to report on Contractor’s compliance should be carried out on weekly
basis. Measure to mitigate landscape and
visual impact during construction should be checked and monitored by a
Registered Landscape Architect to ensure compliance with the intended aims of
the mitigation measures. Moreover, the progress
of the engineering works shall be regularly reviewed on site to identify the earliest
practical opportunities for the landscape works to be undertaken.
7.2.1
In this Reporting Period, Registered Landscape
Architect with the Contractor had undertaken a total of 291 occasions
of inspection during construction phase.
7.2.2
During the Reporting
Period, existing trees on boundary of the project area were properly protected
and no damage of the existing trees were record in
this Reporting Period. Felled trees during construction were collected by a
licensed collector for recycling. The detailed inspection checklists can
be referred to
relevant Monthly EM&A Reports of the Contract.
7.2.3
According to the
approved planting plan, most of the planting works under the contract were
completed and the substantial completion certificate had been issued by RE.
Therefore, the establishment period monitoring for planting works was commenced
on 1 June 2020 under the EM&A manual requirement.
The detailed inspection checklists can be referred to relevant Monthly EM&A
Reports of the Contract.
7.3.1
According to
EM&A Manual requirements, monitoring of the planting works during the
24-month Establishment period after completion of the construction works should
be carried out. Establishment Works Inspection should be carried out once every
3 months to make sure the establishment planting works is complied with EMIS
requirement.
8.1.1
During EIA study,
landfill gas hazards are likely to be generated
from the Pillar Point Valley (PPV) Landfill. Hence, regular landfill
gas monitoring is recommended during construction of the proposed toll plaza.
8.1.2
During construction, a Safety
Officer should be appointed to carry out the monitoring works. The monitoring
frequency and areas to be monitored should be set down prior to commencement of
ground-works either by the Safety Officer or an approved and appropriated
qualified person. The routine monitoring should be carried out in all excavations,
manholes, chambers, relocation of monitoring wells and any other confined
spaces that may have been created. All measurements in excavations should be
made with the extended monitoring tube located not more than 10 mm from the exposed
ground surface. Monitoring should be performed properly to make sure that the
area is free of landfill gas before any man enters in the area.
8.1.3
For excavations deeper
than 1m, measurements should be carried out:
Ÿ
at the ground surface
before excavation commences;
Ÿ
immediately before any
worker enters the excavation;
Ÿ
at the beginning of each
working day for the entire period the excavation remains open; and
Ÿ
periodically through the working day
whilst workers are in the excavation.
8.1.4
For excavations between
300mm and 1m deep, measurements should be carried out:
Ÿ
directly after the
excavation has been completed; and
Ÿ
periodically whilst the
excavation remains open
8.1.5
For excavations less
than 300mm deep, monitoring may be omitted, at the discretion of the Safety
Officer or other appropriately qualified person.
8.1.6
To ensure the accuracy
of the monitoring data, zeroing of the gas analyser
shall be undertaken at the start of each day’s monitoring. As part of the QA/QC, calibration of the
gas analyser shall be conducted at least once every
two weeks according to the specification of the manufacturer’s operation
manual.
8.1.7
The landfill
consultation zone was divided into 6 monitoring zones. The landfill gas
monitoring zones are summarized in Table 8-1 and the layout plan for the
monitoring zone is illustrated in Appendix D.
Table
8-1 Landfill
Gas Monitoring Zone
|
ID
|
Location
|
|
TD1
|
TD1, Retaining Wall A, Grave
G1 and Subway
|
|
RW-B
|
Retaining Wall B
|
|
RW-F
|
Retaining Wall F
|
|
S&U
|
Slope and Underpass
|
|
BW
|
Bridge Works (G2,
H1)
|
|
LMR
|
Lung Mun
Road
|
8.2.1
In the Reporting Period, total 1,403 monitoring days carried out by the Safety Officer or an approved and
qualified persons. Landfill gas measurement results throughout
the construction period are summarized in Table 8-2. Moreover, graphical plot are attached in
Appendix F.
Table 8-2 Summary of
Landfill Gas Measurement Results
|
Para.
|
Action Level
|
Limit Level
|
In
Period
|
Retaining Wall
B
|
In
Period
|
Retaining Wall
F
|
|
Min
|
Max
|
Min
|
Max
|
|
Methane
|
>10% LEL (>0.5% v/v)
|
>20% LEL (>1% v/v)
|
Nov 2014
to Sep 2016
|
0%
|
0.2%
|
Nov 2014
to Sep 2016
|
0%
|
0.2%
|
|
|
TD1
|
|
LMR
|
|
Min
|
Max
|
Min
|
Max
|
|
Oct 2016
to Oct 2018
|
0.1%
|
0.1%
|
Oct 2016
to Oct 2019
|
0.1%
|
0.1%
|
|
Oxygen
|
<19%
|
<18%
|
|
Retaining Wall B
|
|
Retaining Wall F
|
|
Min
|
Max
|
Min
|
Max
|
|
Nov 2014
to Sep 2016
|
20.9%
|
21.4%
|
Nov 2014
to Sep 2016
|
21.0%
|
21.3%
|
|
|
TD1
|
|
LMR
|
|
Min
|
Max
|
Min
|
Max
|
|
Oct 2016
to Oct 2018
|
19.2%
|
21.1%
|
Oct 2016
to Oct 2019
|
20.1%
|
21.1%
|
|
Carbon Dioxide
|
>0.5%
|
>1.5%
|
|
Retaining Wall B
|
|
Retaining Wall F
|
|
Min
|
Max
|
Min
|
Max
|
|
Nov 2014
to Sep 2016
|
0%
|
0.3%
|
Nov 2014
to Sep 2016
|
0%
|
0.3%
|
|
|
TD1
|
|
LMR
|
|
Min
|
Max
|
Min
|
Max
|
|
Oct 2016
to Oct 2018
|
0.1%
|
0.2%
|
Oct 2016
to Oct 2019
|
0.1%
|
0.2%
|
8.2.2
Landfill gas monitoring at TD1 was temporary
suspended in the period from 7 June 2018 to 10 July 2018 and LMR from 22 July
2017 to 2 April 2018 and 1 June 2019 to 30 June 2019 due to no excavation work
were undertaken at those area.
8.2.3
The measurement results shown that no
monitoring parameter was trigger to the action / limit level throughout the
construction period.
9.1.1
Waste management was carried out by an
on-site Environmental Officer or an Environmental Supervisor from time to time.
The effective management of waste arising during the construction phase will be
monitored through the site audit programme. The aims of the waste audit are:
l to ensure
the waste arising from the works are handled, stored, collected, transferred
and disposed of in an environmentally acceptable manner; and
l to encourage the reuse and recycling of material.
9.1.2
In addition to the site inspections, the ET
shall review the documentation procedures prepared by the Waste Coordinator
once a week to ensure proper records are being maintained and procedures
undertaken in accordance with the Waste Management Plan.
9.2.1
All types of waste arising from the
construction work are classified into the following:
l Construction
& Demolition (C&D) Material;
l Chemical
Waste;
l General
Refuse; and
l Excavated
Soil.
9.2.2
In the reporting periods, total quantities of
waste disposal are summarized in Tables 9-1, 9-2 and the Waste Flow
Table is presented in Appendix G.
Table 9-1 Summary of
Quantities of Inert C&D Materials
|
Type of Waste
|
Quantity
|
Total
|
Disposal
Location
|
|
Nov 14 – Oct 15
|
Nov 15 – Oct 16
|
Nov 16 – Oct 17
|
Nov 17 – Oct 18
|
Nov 18 – Oct 19
|
Nov 19 – Oct 20
|
Nov 20 – Dec 20
|
|
Reused in this
Contract (Inert) (`000m3)
|
158.692
|
121.699
|
30.492
|
2.201
|
0
|
0
|
0
|
313.084
|
-
|
|
Reused in other Projects (Inert) (`000m3)
|
161.308
|
125.501
|
81.074
|
4.770
|
0
|
0
|
0
|
372.653
|
• TM-CLKL
C2 HY/2012/08
• Lam Tei
Quarry
• Eco Park K.wah Recycle Facilities
• Lung Kwu
Tan Tailor Recycled Aggregates
• Laintang BCP
|
|
Disposal as Public
Fill (Inert) (`000m3)
|
159.021
|
7.618
|
15.508
|
29.501
|
26.861
|
11.985
|
0.662
|
251.156
|
Tuen Mum Area 38
|
Table 9-2 Summary
of Quantities of C&D Wastes
|
Type of Waste
|
Quantity
|
Total
|
Disposal
Location
|
|
Nov 14 – Oct 15
|
Nov 15 – Oct 16
|
Nov 16 – Oct 17
|
Nov 17 – Oct 18
|
Nov 18 – Oct 19
|
Nov 19 – Oct 20
|
Nov 20 – Dec 20
|
|
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
-
|
|
Recycled
Paper / Cardboard Packing (`000kg)
|
0.05
|
0.07
|
0
|
0
|
0
|
0
|
0
|
0.12
|
Recycle Collector
|
|
Recycled
Plastic (`000kg)
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
-
|
|
Chemical
Wastes (`000kg)
|
0
|
0
|
0.030
|
0.080
|
0
|
0
|
0
|
0.11
|
Licensed collector
|
|
General
Refuses (`000m3)
|
0.374
|
1.250
|
2.267
|
3.259
|
2.598
|
1.291
|
0.115
|
11.154
|
WENT
|
9.2.3
To control the site performance on waste
management, the Contractor was ensured that all solid and liquid waste
management works are fully in compliance with the relevant license/permit
requirements, such as the effluent discharge license and the chemical waste
producer registration. The Contractor
was also implemented the recommended environmental mitigation measures
according to the Environmental Monitoring and Audit Manual.
10.1.1
According to the approved EM&A Manual,
the environmental site inspection shall be formulation by ET Leader. Weekly environmental site inspections
should carry out to confirm the environmental performance.
Findings / Deficiencies During
Reporting Period
10.1.2
During the reporting period, total 322 events
of joint site inspection to evaluate site environmental performance has been
carried out by the RE, ET and the Contractor. Moreover, IEC or ENPO
attended total 84 occasion’s joint site inspection.
10.1.3
During the reporting period, there are no non-compliance recorded, however, 581 observations/ reminders were recorded
during the site inspections. The minor deficiencies found in the weekly
site inspections were in general rectified within the specified deadlines. The environmental performance of the
Project was therefore considered satisfactory.
Inspection Checklist for Vulnerable to
Contaminated Water Discharge
10.1.4
Following the complaint about discharge of
milky water to Bufferfuly Beach on 2 September 2015, the Contractor proposed to carry out
inspection of wastewater treatment facilities, concerned discharge points,
drainage inlets and outlets daily during typhoon or wet season and once per week at dry season.
10.1.5
In addition, specific inspections would also
be conducted before and after adverse weather to ensure necessary remedial works
would be carried out timely. Should incidental contaminated water discharge be
found at the inlet of the associated drainage system, a specific inspection of
the relevant drainage pipes would be conducted for traces of deposit, and
follow up actions would be taken when necessary.
10.1.6
Following the EPD’s site
inspection on 22 February 2019, the contractor was advised to
carry on the temporary drainage inspection until the completion of
the construction of permanent drainage system. As the permanent
drainage system was fully commissioned in July 2019, the
temporary drainage inspection has been terminated since
then.
11.1.1
For the Contract, no environmental summons
and prosecution was received throughout the construction period. However, there are 117 exceedances of action / limit levels recorded and 11
complaints received during the Construction Period. The statistical summary table of environmental
exceedance, complaint, summons and prosecution is presented in Tables
11-1, 11-2, 11-3 and 11-4.
Table 11-1 Statistical Summary of
Environmental Exceedance
|
Reporting Period
|
Environmental
Aspect
|
Exceedance
Statistics
|
|
Action
|
Limit
|
|
23 October 2014 –
31 December 2020
|
Air Quality
|
1-hour TSP
|
94
|
13
|
|
24-hour TSP
|
7
|
3
|
|
Landfill Gas
|
Methane
|
0
|
0
|
|
Oxygen
|
0
|
0
|
|
Carbon Dioxide
|
0
|
0
|
Table 11-2 Statistical Summary of
Environmental Complaints
|
Reporting Period
|
Complaint Nature*
|
Total Registered
|
|
Water Quality
|
Construction Dust
|
Construction Noise
|
Others
|
|
23 October 2014 –
31 December 2020
|
6
|
4
|
1
|
2
|
11
|
*Remarks: Some complaint related to more than
one nature
Table 11-3 Statistical Summary of
Environmental Summons
|
Reporting Period
|
Environmental
Summons Statistics
|
|
Cumulative
|
Complaint Nature
|
|
Air
|
Noise
|
Water
|
|
23 October 2014 –
31 December 2020
|
0
|
NA
|
NA
|
NA
|
Table 11-4 Statistical Summary of
Environmental Prosecution
|
Reporting Period
|
Environmental
Prosecution Statistics
|
|
Cumulative
|
Complaint Nature
|
|
Air
|
Noise
|
Water
|
|
23 October 2014 –
31 December 2020
|
0
|
NA
|
NA
|
NA
|
11.2.1
During the complaint investigation work, the
Contractor was co-operated with the ET in providing all the necessary
information and assistance for completion of the investigation. Investigation
reports for the complaints have completed by the ET and submitted to all
relevant parties and they are summarized in below.
l
28 July 2015 - A
complaint was received from the DSD on 28 July 2015. The complainant complained
that milky water was observed from drainage outlet to Butterfly Beach. It was
suspected that the milky water was come from the site under the Contractor.
Joint inspection has been carried out by DSD, AECOM and CKJV immediately
receipt the complaint and no milky/ muddy water was found. Moreover, EPD was
conducted site inspection with AECOM and CKJV on 29 July 2015 to further
investigation. No milky/ muddy water was observed during the inspection.
However, EPD urged CKJV to enhance the mitigation measures for wastewater at
Eastern Portal and MH7
l
3 August 2015 - A complaint was
received via 1823 hotline on 3
August 2015. The complainant
complained that the frequent
dump trucks running along Lung Mun Road from Tuen Mun Area 38 Fill Bank and
carriageway near River Trade Terminal causing soil/ muddy water on the road
surface. In our investigation, it
was concluded that the complaint was not related to the works under the
Contract.
l
2
September 2015 - A complaint was received from the LCSD on 2 September 2015
regarding milky water discharged from the drainage outlet near the Butterfly
Beach, Tuen Mun. It was suspected that the milky water
was come from the site under the Contract. . In our investigation, it was concluded that the complaint was
not related to the works under the Contract.
l
28
April 2016 - A complaint was received from the EPD on 28 April 2016. The complainant complained that dust and
smoke emission from a drilling rig was observed on the slope near Pillar Point,
Tuen Mun. It was suspected that the heavy dust was
generated from the construction activities under the Contractor.
l
9
May 2016 - A complaint was received from the EPD on 9 May 2016. The complainant complained that white
color effluent discharging outfall behind sawmill at Ho Yeung Street, Tuen Mun. It cannot confirm the source of the
white color effluent therefore it considered that the above complaint is not
related to the project.
l
7 June 2016 - A complaint was received from
the EPD on 7 June 2016. The
complainant complained that white color effluent discharging outfall at storm outfall of No.33 Ho Yeung Street, Tuen Mun at around 18:00 and this
is a follow up of the complaint EP/RW/0000368066 which received on 9 May 2016
and defecated as not project related complain. EPD visit the
upstream area and open the cover of manhole at Ho Fuk
Street on 21 June 2016. No water discharge was observed and the manhole was
clean and dry in condition. During the joint investigation and inspection by
EPD, Aecom and the Contractor, it was found that the
white water might came from other facilities or site located at Ho Yeung Street
which is not related to this project.
l
3 October 2016 - A complaint was received via EPD hotline on 3 October 2016, claimed that muddy water entering the
drainage system near site entrance-Hand-key attendance system Pillar Point, Tuen Mun at around 03:00 to 04:00 after the rainstorm. Refer to tele-conversation with EPD and
Contractor, the complaint was actually mentioning the muddy water entering the drainage system was
occurred on 1 October 2016 03:00 to 04:00 at the bus station nearby the site
entrance. According to the site record, the works carried out during the
concerned time period was maintenance works of TTA include maintenances of
flashlight, water barrier and road marking, there is no ponding water was
observed nearby the concerned locations. Also during the weekly site inspection
on 4 October 2016, no water discharged from site and ponding at the bus station
nearby the site entrance was observed. Earth bund was also provided at the
slope near the site entrance to divert the surface run-off to the de-silting
system. Moreover, the record from the Hong Kong Observatory also stated there
was no rainfall recorded at Tuen Mun
between 30 September 2016 and 1 October 2016 04:45 a.m. Therefore for the
above result, it is considered that the above complaint is not related to the project.
l
29 September 2017 - A complaint was received from the
EPD on 29 September 2017. The
complainant complained that no water spraying for road works to cause
construction dust emission at Lung Mun Road across
from warehouse near Tuen Mun
River Trade Terminal. After the investigation it was concluded that the
complaint was project related, the improvement works for dust mitigation had
been completed by contractor. The detailed investigation report can be referred
to the Monthly EM&A Reports (October 2017) of the contract.
l
25 October 2017 - A complaint was received from the
EPD on 24 October 2017 by District Councillor Mr. YAN
Siu-nam.
The District Councillor represents the
resident who living at Tuen Mun
Ferry Pier area to complain that light nuisance created by Tuen
Mun - Chek Lap Kok Link Project during mid-night to cause serious impact
for their rest. Also, the complainant query the schedule for the construction
works and the mitigation measures to avoid light nuisance affect to the
resident. After the investigation it was concluded that the complaint was not
project related. The detailed investigation report can be referred to the
Monthly EM&A Reports (November 2017) of the contract.
l
30 January 2018 - A complaint was received from the EPD on 30 January
2018 to complaint that “晚上12點或凌晨3點至5點，點解內河碼頭還有工程要做，不是晚上11點前應該不可發出噪音嗎？而且可以無限發光，已經是凌晨了有這需要嗎? 已經是凌晨了，為何開着咁多大光燈？至於在日頭觀察，為何內河碼頭及港珠澳大橋工程，不是應該把沙石灑水避免空氣污染嗎？為何沒有依程序灑水，令沙塵飄到屯門碼頭？還容一船船沙石飄揚？屯門碼頭空氣污染指數甚高，這就是原因.”. After the
investigation it was concluded that the complaint was project related, the
improvement works for dust mitigation had been completed by contractor. The
detailed investigation report can be referred to the Monthly EM&A Reports (January 2018) of the contract.
l
22 May 2019 - A complaint was received on 22 May 2019 to complaint
that “投訴地盤的大塵滋擾，地盤位置在屯門內河碼頭及珠江倉旁邊，正在興建一條由屯門通往機場的隧道，煩請跟進及回覆”. After the
investigation it was concluded that the complaint was not project related. The
detailed investigation report can be referred to the Monthly EM&A Reports (May 2019) of the contract.
12.1.1
The environmental mitigation measures that
recommended in the Environmental Mitigation Measures Implementation Schedule (EMMIS) in the
Project EM&A Manual covered the issues of Air Quality, Cultural Heritage, Ecology, Landfill Gas Hazard, Landscape & Visual,
Noise, Water and Waste and they are presented in Appendix H.
12.1.2
During the construction period, environmental
mitigation measures generally implemented by the Contract are listed in Table
12-1.
Table 12-1 Environmental Mitigation
Measures
|
Issues
|
Environmental Mitigation Measures
|
|
Air Quality
|
· Maintain damp / wet surface
on access road
· Keep slow speed in the sites
· All vehicles must use wheel
washing facility before off site
· Sprayed water during rock
breaking works
· During transportation by truck, materials loaded lower
than the side and tail boards, and covered before transport
· Compacted all soil stockpiles
· Part of the exposed slopes covered geotextile net
|
|
Cultural Heritage
|
· Set a buffer zone between the working area
and the Grave
· All construction materials and equipment store far from
the Grave
· Inspection the Grave to ensure provision mitigation
measures effective
|
|
Ecology
|
·
Wire fencing provided
for temporary protect Pitcher Plants
·
Undertake weekly
inspection of Pitcher Plants
|
|
Landfill Gas Hazard
|
·
Landfill Gas
measurement undertake during trench excavation
|
|
Water Quality
|
· Temporary drainage system
provide for surface runoff prevent discharge to public area
· Wastewater to be treated by
sedimentation tank before discharge.
|
|
Noise
|
· No
operation of powered mechanical equipment is allowed during restricted hours
from 19:00 to 07:00 on the following day and whole day during Sunday and
public holiday without construction noise permit (CNP)
· Keep good maintenance of
plants
· The noisy plants or works
provide mobile noise barriers
· Shut down the plants when
not in use
|
|
Waste and Chemical
Management
|
· On-site sorting prior to
disposal
· Follow requirements and
procedures of the “Trip-ticket System”
·
Predict required quantity of concrete accurately
· Collect the unused fresh concrete at designated
locations in the sites for subsequent disposal
|
|
General
|
· The site was generally kept
tidy and clean.
|
13.1.1
This is Final EM&A Report summarized the monitoring results and
inspection findings for the Reporting Period from 23 October 2014 to 31 December 2020.
13.1.2
The construction phase EM&A programme for the Contract commenced on 23 October 2014 and
was terminated since 31 December 2020.
13.1.3
No environmental notifications
of summons or successful prosecution were received during the Reporting Period.
13.1.4
The construction phase
monitoring programme ensured that any environmental
impact to the receivers would be readily detected and timely actions could be
taken to rectify any non-compliance.
Assessment and analysis of monitoring results collected demonstrated the
environmental acceptability of the Project. The regular site inspection and waste
audit ensured that all the mitigation measures on waste management were
effectively implemented.
13.1.5
The EM&A programme effectively monitored the environmental impacts
from the construction phase of the Project and no particular recommendation was
advised for the improvement of the programme.
13.1.6
It is considered that
the environmental acceptability of the Contract during the construction phase was
satisfactory and acceptable. In general, the monitoring results were in line with EIA predictions.
