Table
of contents
Page
Summary of Main Works Undertaken and
Key Measures Implemented
Environmental Monitoring Works
Key Information in the Reporting
Month
Construction Activities undertaken
during the Reporting Month
Status of Environmental Licensing and
Permitting
Monitoring
Parameters and Frequency
Comparison of EM&A Result with
EIA Prediction
Monitoring
Parameters, Frequency and Duration
Monitoring Methodology and QA/QC
Procedure
Comparison of EM&A Result with
EIA Prediction
Monitoring Parameters and Frequency
Implementation Status of
Environmental Mitigation Measures
Implementation Status of Event and
Action Plans
13 Environmental
non-conformance
Summary of Complaint, Warning,
Notification of any Summons and Successful Prosecution
15 Conclusions
and recommendations
lIST OF
TABLES
Table I Non-compliance (exceedance) Record for the Project in the Reporting Month
Table III Summary of Complaints Details in Reporting Month
Table IV Summary Table for Site Activities in the next Reporting Period
Table 1.1 Key Project Contacts
Table 1.2 Summary of Environmental License and Permit
Table 2.1 Air Quality Monitoring Locations
Table 2.2 Frequency and Parameters of Air Quality Monitoring
Table 2.3 Air Quality Monitoring Equipment
Table 2.4 Major Dust Source during Air Quality Monitoring
Table 2.5 Comparison of 1-hr TSP Monitoring Data with Predictions in EIA Report
Table 2.6 Comparison of 24-hr TSP Monitoring Data with Predictions in EIA Report
Table 3.1 Noise Monitoring Stations
Table 3.2 Frequency and Parameters of Noise Monitoring
Table 3.3 Noise Monitoring Equipment
Table 3.4 Other Noise Source Identified during Noise Monitoring
Table 3.5 Baseline Noise Level and Noise Limit Level for Monitoring Stations
Table 3.6 Maximum Predicted Mitigated Construction Noise Levels in EIA Report
Table 10.1 Landfill Gas Monitoring Equipment
Table 12.1 Observations and Recommendations of Site Audit
lIST OF FIGUREs
Figure 1.2 Organizational Structure for Environmental Management
Figure 2 Locations of Air Quality and
Construction Noise Monitoring Stations
lIST OF APPENDIces
Appendix A Action
and Limit Levels
Appendix B Copies of
Calibration Certificates
Appendix C Weather Information
Appendix D Environmental
Monitoring Schedules
Appendix E 1-hour
TSP Monitoring Results and Graphical Presentations
Appendix F 24-hour
TSP Monitoring Results and Graphical Presentations
Appendix G Noise
Monitoring Results and Graphical Presentations
Appendix H Waste
Generation in the Reporting Month
Appendix I Site Audit Summary
Appendix J Environmental
Mitigation Implementation Schedule (EMIS)
Appendix K Record
of Landfill Gas Monitoring by Contractor
Appendix L Event
and Action Plans
Appendix N Summary
of Exceedance
Appendix O Tentative
Construction Programme
1.
This is the 9th
Environmental Monitoring and Audit (EM&A) Report prepared by the
Environmental Team (ET), Cinotech Consultants Ltd.,
for Contract No. ED/2018/04 “Trunk Road T2
and Infrastructure Works for Developments at the Former South Apron”.
This report summarized the monitoring results and audits findings of the
EM&A programme under the issued Environmental Permit (EP) No. EP-458/2013/C
and in accordance with the EM&A Manual (AEIAR-173/2013) during the
reporting month of January 2021.
2. The main works undertaken during the
reporting period are as follows:
West Bound – Drill & Break Tunnel
East Bound – Drill & Blast Tunnel
3. Implementation of the key mitigation
measures during the reporting period are as follows:
Construction Noise
Construction activities were scheduled to minimize noise nuisance to the nearby sensitive receiver.
Use of Quality Powered Mechanical Equipment (QPME) on site.
Erected the noise barrier on site.
Air Quality
Regularly watering on site to avoid dust generation.
Landscape and Visual
Tree protection zones were fenced off to protect the existing trees on site.
4. Environmental monitoring for the Project
was performed in accordance with the EM&A Manual and the monitoring results
were checked and reviewed. Site Inspections/Audits were conducted once per
week. The implementation of the environmental mitigation measures, Event Action
Plans and environmental complaint handling procedures were also checked.
5. Summary of the non-compliance (exceedance) in the reporting month for the Project is tabulated in Table I.
Table I Non-compliance (exceedance) Record for the Project in
the Reporting Month
|
Environmental
Monitoring |
No. of
Non-compliance (Exceedance) |
No. of Non-compliance (Exceedance) due to Construction Activities of this
Project |
Action Taken |
||
|
Action Level |
Limit Level |
Action Level |
Limit Level |
||
|
Air Quality |
0 |
0 |
0 |
0 |
N/A |
|
Noise |
0 |
0 |
0 |
0 |
N/A |
|
Marine Water Quality |
N/A |
N/A |
N/A |
N/A |
N/A |
|
Groundwater Level Monitoring (Piezometer
Monitoring) |
N/A |
N/A |
N/A |
N/A |
N/A |
|
Ecological |
N/A |
N/A |
N/A |
N/A |
N/A |
|
Cultural Heritage |
N/A |
N/A |
N/A |
N/A |
N/A |
|
Landfill Gas |
0(1) |
0(1) |
0(1) |
0(1) |
N/A |
|
Note: (1): No Action and Limit
level exceedance for landfill gas was recorded in December 2020 and January
2021. Detail shall be |
|||||
Air Quality Monitoring
6. No Action/Limit Level exceedance for 1-hour TSP monitoring was recorded.
7. No Action/Limit Level exceedance for 24-hour TSP monitoring was recorded.
Construction Noise
Monitoring
8. No Action Level exceedance was recorded in this reporting month.
9. No Limit Level exceedance for day time construction noise monitoring were recorded in the reporting month.
Water Quality Monitoring
10. Groundwater quality monitoring had been suspended
since October 2019 upon the agreement by EPD. Further details should be founded at Section 4.1.
11. No marine water quality monitoring is
required as no marine works will be conducted at the Cha Kwo
Ling and Lam Tin areas for this project.
12. As the construction activity is approximately 120m away from the piezometer gate, no piezometer monitoring is required.
Waste Management
13. Wastes generated from this Project include inert construction and demolition (C&D) materials, and non-inert C&D materials. Details of waste management data is presented in Appendix H.
Ecological Monitoring
14. No coral monitoring is required as no marine works will be conducted at the Cha Kwo Ling and Lam Tin areas for this project.
Fisheries Impact Monitoring
15. No specific fisheries monitoring programme
is required during the construction phase.
Monitoring on Cultural
Heritage
16. As the construction works of Cha Kwo Ling Tunnel from the end of Trunk Road T2 to the TKOLTT
at the Eastern Ventilation Building are located more than 100m away from the
Cha Kwo Ling Tin Hau
temple, no monitoring on cultural heritage is required.
Landscape and Visual
Monitoring and Audit
17. The implementation of landscape and visual mitigation measures was checked by a registered landscape architect. Recommended follow-up actions have been discharged by the Contractor. Details of the audit findings and implementation status are presented in Section 12.
Landfill Gas Monitoring
18. Monitoring of landfill gases was commenced in December 2016. Such monitoring was conducted by the Contractor of Agreement No. CE 59/2015 (EP). No Action and Limit Level exceedance was recorded in December 2020 and January 2021.
Hazard to Life Monitoring
19. 19. No environmental monitoring and audit is required as no hazard assessment was conducted.
Environmental Site Inspection
20. Joint weekly site inspections were conducted by representatives of the Contractor, Engineer and Environmental Team. Details of the audit findings and implementation status are presented in Section 12.
21. Summary of key information in the reporting month is tabulated in Table II
|
Event |
Event Details |
Action Taken |
Status |
|
|
Number |
Nature |
|||
|
Complaints Received |
0 |
-- |
N/A |
N/A |
|
Notifications
of any summons & prosecutions received |
0 |
-- |
N/A |
N/A |
22. Summary of complaints received in the reporting month is tabulated in Table III.
Table
III Summary of Complaints Details in
Reporting Month
|
Complaint Type |
Investigation Findings |
Follow-up Action / Mitigation Measure |
|
N/A. |
N/A. |
N/A |
23. No reporting change in the reporting month.
24. The key works or activities will be
anticipated in the next reporting period are as follows:
Table IV Summary Table
for Site Activities in the next Reporting Period
|
Site Activities (February 2021) |
Key Environmental Issues |
||
|
1. West Bound –
Drill & Break Tunnel 2. East Bound –
Dill & Blast Tunnel |
(A) / (B) / (C) / (D) |
||
|
Note: (A) Dust generation
from haul road, stockpile of dusty
materials, exposed site area, excavation works and rock breaking activities; (B) Noisy construction activity such as
rock-breaking activities and piling works; (C) Runoff from exposed slope or site area;
and (D) Wastewater and runoff discharge from site. |
|||
1.1
In 2009, Civil
Engineering and Development Department (CEDD) commissioned a Kai Tak Development (KTD) – Trunk Road T2 and
Infrastructure at South Apron Investigation. The assignment
covers the provision of the Trunk Road T2 and its connections with the Central
Kowloon Route (CKR) at the north apron area and the Tseung
Kwan O – Lam Tin Tunnel (TKOLTT) to the south in the Cha Kwo
Ling area.
1.2
The Trunk Road T2
Project is one of the designated Projects under Schedule 2 of the EIAO proposed
in the KTD. CEDD submitted the Project Profile (No. PP-379/2009) on 24 March
2009 for application for an EIA study brief for the Trunk Road T2 Project under
the EIAO. Accordingly, an EIA Study Brief (ESB-203/2009) for the Trunk Road T2
Project was issued on 30 April 2009. The
Environmental Impact Assessment (EIA) Report for the Trunk Road T2 Project was
approved under the Environmental Impact Assessment Ordinance (EIAO) on 19
September 2013. The corresponding Environmental Permit (EP) was issued on 19
September 2013 (EP no.: EP-451/2013).
1.3
The Contract No.
ED/2018/04 is the main contract of Trunk Road T2 (“T2 Main Works”) which
comprises mainly the design and construction of a dual two-lane trunk road of
approximately 3.0km long with about 2.7km of the trunk road in form of tunnel;
ventilation and administration buildings, environmental protection and
mitigation works and etc. The EM&A programme
under this Contract is governed by the two EPs (EP-451/2013 and EP-458/2013/C)
and two EM&A Manuals (AEIAR-174/2013 and AEIAR-173/2013). The work areas of
the T2 Main Works are shown in Figure 1
and the works to be executed under this Contract and corresponding EPs are
summarized as follows:
|
Environmental Permit |
Works Description |
|
EP-451/2013 –
Trunk Road T2 |
Trunk Road T2 · Construction of highway and sub-sea tunnel
connecting between Central Kowloon Route and Cha Kwo
Ling Tunnel · Western & Eastern Ventilation Buildings |
|
EP-458/2013/C – Tseung Kwan O – Lam Tin Tunnel (TKOLTT) and Associated
Works |
Cha Kwo Ling Tunnel Construction of
Cha Kwo Ling Tunnel from the end of Trunk Road T2
to the TKOLTT at the Eastern Ventilation Building |
Monitoring Works in Lam Tin under
EP-458/2013/C
1.4 Under Agreement No. CE 59/2015 (EP) – Tseung Kwan O – Lam Tin Tunnel (TKOLLT) and Associated Works, the baseline monitoring works in Lam Tin under the EM&A Manual (AEIAR-173/2013) were conducted by the Environmental Team (ET) for the Agreement No. CE 59/2015 (EP) at the approved monitoring locations, namely AM1, AM2, AM3, AM4, AM4 (A) CM1, CM2, CM3, CM4 and CM5. Impact monitoring within the Lam Tin area shall be conducted by the ET of Contract No. ED/2018/04 upon cessation of Agreement No. CE 59/2015 (EP). The data obtained from the impact monitoring works completed by the ET of Agreement No. CE 59/2015 (EP) will be adopted in this report.
1.5
Cinotech Consultants Ltd. was designated as the
Environmental Team (ET) to undertake the EM&A works for “Trunk Road T2 and Infrastructure Works for
Developments at the Former South Apron” (hereinafter called the
“Project”).
1.6
This
is the 9th Monthly EM&A Report which summarises
the impact monitoring results and audit findings for the EM&A programme during the reporting period in January 2021.
1.7 Different Parties with different levels of involvement in the Project organization include:
Permit Holder – Civil Engineering and Development Department (CEDD)
Supervisor Representative – Hyder-Meinhardt Joint Venture (HMJV)
Environmental Team (ET) – Cinotech Consultants Limited (Cinotech)
Independent Environmental Checker (IEC) – Ramboll Hong Kong Limited (Ramboll)
Contractor – Bouygues Travaux Publics (BTP)
1.8 The key contacts of the Project are shown in Table 1.1.
Table 1.1 Key Project Contacts
|
Party |
Role |
Contact Person |
Phone No. |
|
CEDD |
Permit Holder |
Mr. Wong Chi Wai, Tommy |
3842 7111 |
|
HMJV |
Supervisor Representative |
Mr. Joe Nam |
5183 0830 |
|
Cinotech |
Environmental Team |
Mr. KS Lee (ETL) |
2151 2091 |
|
Ms. Karina Chan |
2157 3880 |
||
|
Ramboll |
Independent Environmental Checker |
Mr. Manson Yeung |
3465 2888 |
|
BTP |
Contractor |
Mr. Bryan Lee |
5588 3891 |
|
|
|||
1.9
The Organizational Structure for Environmental Management is shown in Figure 1.2.
1.10 The major site activities undertaken in the reporting month included:
West Bound – Drill & Break
Tunnel
East Bound – Drill & Blast
Tunnel
1.11 The EM&A programme requires construction noise, air quality monitoring and environmental site audit, etc. The EM&A requirements for each parameter are described in the following sections, including:
All monitoring parameters;
Action and Limit levels for all environmental parameters;
Event Action Plans;
Environmental mitigation measures, as recommended in the Project EIA Report.
1.13 This report presents the monitoring results, observations, locations, equipment, period, methodology and QA/QC procedures of the monitoring parameters of the required environmental monitoring works and audit works for the Project in January 2021.
1.14 All permits/licenses obtained for the Project are summarized in Table 1.2.
Table
1.2 Summary of Environmental License
and Permit
|
Permit
/ License No. |
Valid Period |
Status |
|
|
From |
To |
||
|
Environmental
Permit (EP) |
|||
|
EP-451/2013 |
19 Sep 2013 |
N/A |
Valid |
|
EP-458/2013/C |
20 Jan 2017 |
N/A |
Valid |
|
Notification pursuant to Air Pollution
(Construction Dust) Regulation |
|||
|
Ref. No.: 451120 |
20 Nov 2019 |
N/A |
Valid |
|
Billing Account for Construction Waste
Disposal |
|||
|
A/C No.: 7036016 |
09 Dec 2019 |
N/A |
Valid |
|
Construction Noise Permit |
|||
|
CNP No. (For Portion T1): GW-RE0987-20 |
29 Nov 2020 |
28 Jan 2021 |
Expired on 28 Jan 2021 |
|
CNP No. (For Portion T1): GW-RE0071-21 |
28 Jan 2021 |
27 May 2021 |
Valid |
|
CNP No. (For Portion Q): GW-RE0917-20 |
08 Nov 2020 |
07 May 2021 |
Valid |
|
Wastewater Discharge License |
|||
|
WT00036699-2020 |
14 Jan 2021 |
31 Jan 2026 |
Valid |
|
Chemical Waste Producer License |
|||
|
WPN: 5213-286-B2557-03 |
09 Mar 2020 |
N/A |
Valid |
2.1 According to Section 2.2.4 of the EM&A Manual (AEIAR-173/2013), 1-hour and 24-hour Total Suspended Particulates (TSP) monitoring was conducted to monitor the air quality for this Project. For regular impact monitoring, a sampling frequency of at least once in every six days at all of the monitoring stations for 1-hour and 24-hour TSP monitoring. Appendix A shows the established Action/Limit Levels for the environmental monitoring works.
2.2 Five designated monitoring stations were selected for air quality monitoring programme. Table 2.1 describes the air quality monitoring locations, which are also depicted in Figure 2.
Table 2.1 Air Quality Monitoring Locations
|
Location |
Location of Measurement |
|
|
AM1 |
Tin Hau
Temple |
Ground Level |
|
AM2 |
Sai Tso Wan Recreation Ground |
Ground Level |
|
AM3 |
Yau Lai Estate Bik Lai House |
Rooftop (41/F) |
|
AM4(1) |
Sitting-out Area at Cha Kwo Ling Village |
Ground Level |
|
AM4(A)(2) (*) |
Cha Kwo
Ling Public Cargo Working Area Administrative Office |
Rooftop (3/F) |
Remarks:
(1) For 1-hour TSP monitoring;
(2) For 24-hour TSP monitoring
(*) Air quality monitoring at designated
station AM4 (24-hr TSP) was rejected by the premise owners.
Therefore, baseline and impact air quality
monitoring works were carried out at alternative air quality monitoring
stations AM4 (A) (24-hr TSP only)
2.3
Table 2.2 summarizes the monitoring
parameters, monitoring period and frequencies of impact air quality monitoring.
The monitoring schedule is shown in
Appendix D.
Table 2.2 Frequency and Parameters of Air Quality
Monitoring
|
Monitoring
Stations |
Parameter |
Period |
Frequency |
|
AM1, AM2, AM3, AM4 |
1-hour TSP |
0700 – 1900 |
3
times per 6 days |
|
AM1, AM2, AM3, AM4(A) |
24-hour TSP |
24 hours |
Once every 6 days |
2.4 High Volume Samplers (HVS) in compliance with the specification stipulated in the EM&A Manual (AEIAR-173/2013), Section 2.3.1, were used to carry out 24-hour TSP monitoring. Direct reading dust meter were also used to measure 1-hour average TSP levels. The 1-hour sampling was determined by HVS to check the validity and accuracy of the results measured by direct reading method.
2.5 Wind data monitoring equipment was set at rooftop (about 41/F) of Yau Lai Estate Bik Lai House for logging wind speed and wind direction such that the wind sensors are clear of obstructions or turbulence caused by building. The wind data monitoring equipment is re-calibrated at least once every six months and the wind directions are divided into 16 sectors of 22.5 degrees each. The location is shown in Figure 2. This weather information for the reporting month is summarized in Appendix C.
2.6 Table 2.3 summarizes the equipment used for air quality monitoring by the ET for Contract No. CE 59/2015 (EP). Copies of calibration certificates are attached in Appendix B.
Table
2.3 Air Quality Monitoring
Equipment
|
Equipment |
Model
|
Quantity |
|
1-hour TSP Dust
Meter |
Sibata
Model No. LD-5R (Serial No.: 8Y2373, 8Y2374, 972781, 972780, 972778,972779) |
6 |
|
HVS Sampler |
TISCH Model: TE-5170 (Serial No.: 1536) |
1 |
|
GMW model: GS2310 (Serial No.: 1287, 10379, 10599) |
3 |
|
|
Calibrator |
TISCH Model: TE-5025A (Serial No.: 3746) |
1 |
|
Wind Anemometer |
Davis Weather
Monitor II, Model no. 7440 (Serial No.:
MC01010A44) |
1 |
1-hour TSP Monitoring
Measuring Procedures
2.7 The measuring procedures of the 1-hour dust meter are in accordance with the Manufacturer’s Instruction Manual as follows:
(Sibata Model No.: LD-5R)
· The 1-hour dust meter is placed at least 1.3 meters above ground.
· Set POWER to “ON” and make sure that the battery level was not flash or in low level.
· Allow the instrument to stand for about 3 minutes and then the cap of the air sampling inlet has been released.
· Push the knob at MEASURE position.
· Set time/mode setting to [BG] by pushing the time setting switch. Then, start the background measurement by pushing the start/stop switch once. It will take 6 sec. to complete the background measurement.
· Push the time setting switch to change the time setting display to [MANUAL] at the bottom left of the liquid crystal display. Finally, push the start/stop switch to stop the measuring after 1 hour sampling.
· Information such as sampling date, time, count value and site condition were recorded during the monitoring period.
Maintenance/Calibration
2.8 The following maintenance/calibration is required for the 1-hour dust meter:
· Check and calibrate the meter by HVS to check the validity and accuracy of the results measured by direct reading method at 2-month intervals throughout all stages of the air quality monitoring.
24-hour TSP Monitoring
Instrumentation
2.9 High volume samplers (HVS) (TISCH Model: TE-5170 and GMW Model: GS2310) completed with appropriate sampling inlets were employed for 24-hour TSP monitoring. The sampler was composed of a motor, a filter holder, a flow controller and a sampling inlet and its performance specification complied with that required by USEPA Standard Title 40, Code of Federation Regulations Chapter 1 (Part 50).
2.10 The positioning of the HVS samplers are as follows:
·
A
horizontal platform with appropriate support to secure the samplers against
gusty wind shall be provided;
·
No
two samplers shall be placed less than 2 meter apart;
·
The
distance between the sampler and an obstacle, such as buildings, must be at
least twice the height that the obstacle protrudes above the sampler;
·
A
minimum of 2 metres of separation from walls, parapets and penthouses is required
for rooftop samplers;
·
A
minimum of 2 metres of separation from any supporting structure, measured
horizontally is required;
·
No
furnace or incinerator flue is nearby;
·
Airflow
around the sampler is unrestricted;
·
The
sampler is more than 20 metres from the dripline;
·
Any
wire fence and gate, to protect the sampler, shall not cause any obstruction
during monitoring;
·
Permission
must be obtained to set up the samplers and to obtain access to the monitoring
stations; and
·
A
secured supply of electricity is needed to operate the samplers.
Operating/analytical
procedures for the operation of HVS
2.11 Operating/analytical procedures for the air quality monitoring are highlighted as follows:
·
Prior to the commencement of
the dust sampling, the flow rate of the high volume
sampler was properly
set (between 0.6 m3/min. and 1.7 m3/min.) in accordance
with the EM&A manual (AEIAR-173/2013). The flow rate shall be indicated
on the flow rate chart.
·
For
TSP sampling, fiberglass filters with a collection efficiency of > 99% for
particles of 0.3μm diameter were used.
·
The
power supply was checked to ensure the sampler worked properly. On sampling, the sampler was operated for 5
minutes to establish thermal equilibrium before placing any filter media at the
designated air monitoring station.
·
The
filter holding frame was then removed by loosening the four nuts and a weighted
and conditioned filter was carefully centered with
the stamped number upwards, on a supporting screen.
·
The
filter was aligned on the screen so that the gasket formed an airtight seal on
the outer edges of the filter. Then the
filter holding frame was tightened to the filter holder with swing bolts. The
applied pressure should be sufficient to avoid air leakage at the edges.
·
The
shelter lid was closed and secured with the aluminum
strip.
·
The
timer was then programmed. Information
was recorded on the record sheet, which included the starting time, the weather
condition and the filter number (the initial weight of the filter paper can be
found out by using the filter number).
·
After
sampling, the filter was removed and sent to the HOKLAS laboratory (ALS Technichem (HK) Pty Ltd.) for weighing. The elapsed time was also recorded.
· Before weighing, all filters were equilibrated in a conditioning environment for 24 hours. The conditioning environment temperature should be between 25°C and 30°C and not vary by more than ±3°C; the relative humidity (RH) should be < 50% and not vary by more than ±5%. A convenient working RH is 40%.
Maintenance/Calibration
2.12 The following maintenance/calibration is required for the HVS:
·
The
high volume motors and their accessories were properly
maintained. Appropriate maintenance such as routine motor brushes replacement and
electrical wiring checking were made to ensure that the equipment and necessary
power supply are in good working condition.
High volume samplers were calibrated at bi-monthly intervals using TE-5025A Calibration Kit throughout all stages of the air quality monitoring.
2.13 The impact monitoring works for air quality monitoring locations AM1, AM2, AM3, AM4 and AM4 (A) are completed by the ET of Agreement No. CE 59/2015 (EP), and the data will be adopted in this report.
2.14 Impact air quality monitoring was conducted at five monitoring stations as scheduled. Due to the COVID-19 pandemic, the TKOLTT site was entirely closed starting from 4 to 25 January 2021, thus, monitoring station AM4(A) was inaccessible and the 24-hour TSP monitoring at such station was temporary suspended during the aforementioned period. The monitoring schedule is shown in Appendix D.
2.15 No Action/Limit Level exceedance was recorded for all 1-hour and 24-hour TSP monitoring in the reporting month.
2.16 The monitoring data and graphical presentations of 1-hour and 24-hour TSP monitoring results are shown in Appendix E and Appendix F respectively.
2.17 According to field observations by ET for Agreement No. CE 59/2015 (EP) in the reporting period, the major dust source identified at the designated air quality monitoring stations are as follows:
Table 2.4 Major Dust Source
during Air Quality Monitoring
|
Monitoring Stations |
Major Dust Source |
|
AM1 – Tin Hau Temple |
Road Traffic
at Cha Kwo Ling Road |
|
AM2 – Sai Tso Wan Recreation Ground |
Road Traffic
along Sin Fat Road |
|
AM3 – Yau Lai Estate Bik Lai House |
Road Traffic
near Eastern Cross Harbour Tunnel Toll Plaza |
|
AM4 - Sitting-out Area at Cha Kwo Ling Village |
Road Traffic
at Cha Kwo Ling Road |
|
AM4(A) - Cha Kwo Ling Public Cargo Working Area Administrative Office |
Road Traffic
at Cha Kwo Ling Road |
Comparison of EM&A Result with EIA Prediction
2.18
The air monitoring data was
compared with the predictions (with the assessment height of 1.5 mAG) in Table 3.17 of EIA Report, AEIAR-173/2013 (as
approved in 2013) as summarised in Table
2.5 and Table 2.6.
Table
2.5 Comparison of 1-hr TSP Monitoring
Data with Predictions in EIA Report
|
Monitoring Stations |
ASR ID |
Predicted Maximum 1-hr TSP Concentration in EIA Report (AEIAR-173/2013), μg/m3 |
Maximum 1-hr TSP
Concentration
in the Reporting Month |
|
AM1 – Tin Hau Temple |
CL1 |
707 |
197.5 |
|
AM2 – Sai Tso Wan
Recreation Ground |
CL6 |
266 |
120.0 |
|
AM3 – Yau
Lai Estate Bik Lai House |
CL9 |
507 |
112.5 |
|
AM4 - Sitting-out Area at
Cha Kwo Ling Village |
CL16 |
430 |
129.2 |
Table
2.6 Comparison of 24-hr TSP
Monitoring Data with Predictions in EIA Report
|
Monitoring Stations |
ASR ID |
Predicted Maximum 24-hr TSP Concentration in EIA Report (AEIAR-173/2013), μg/m3 |
Maximum 24-hr TSP
Concentration
in the Reporting Month |
|
AM1 – Tin Hau Temple |
CL1 |
199 |
119.3 |
|
AM2 – Sai Tso Wan
Recreation Ground |
CL6 |
109 |
75.9 |
|
AM3 – Yau
Lai Estate Bik Lai House |
CL9 |
123 |
130.0 |
|
AM4(A) - Cha Kwo Ling Public Cargo Working Area Administrative Office (*) |
N/A(1) |
N/A(1) |
81.0 |
Remarks:
(1)
No 24-hr TSP concentration was predicted in EIA
Report (AEIAR-173/2013)
(*) Air quality monitoring at designated
station AM4 (24-hr TSP) was rejected by the premise owners. Therefore, baseline
and impact air quality monitoring works were carried out at
alternative air quality monitoring stations AM4 (A) (24-hr TSP only)
2.19 In the reporting month, the 1-hour TSP concentrations at AM1, AM2, AM3 and AM4 were lower than the prediction in the EIA Report, AEIAR-173/2013 (as approved in 2013). No Action/Limit level exceedance was recorded in the reporting period.
2.20 In the reporting month, the 24-hour TSP concentrations at AM1 and AM2 were lower than the prediction in the EIA Report, AEIAR-173/2013 (as approved in 2013). For the result of 24-hour TSP monitoring at AM3, it was higher than the prediction in the EIA Report (AEIAR-173/2013) which may due to the fluctuation of road traffic near Eastern Cross Harbour Tunnel Toll Plaza . No Action/Limit level exceedance was recorded in the reporting period.
3.1 According to Section 3.2.1 of the EM&A Manual (AEIAR-173/2013), construction noise monitoring was conducted to monitor the construction noise arising from the construction activities. The regular monitoring frequency for each monitoring station shall be on a weekly basis and conduct one set of measurements between 0700 and 1900 hours on normal weekdays. Appendix A shows the established Action and Limit Levels for the environmental monitoring works.
3.2 Noise monitoring was conducted at five designated monitoring stations, namely CM1, CM2, CM3, CM4 and CM5 in the reporting period. Table 3.1 and Figure 2 show the locations of these stations.
Table
3.1 Noise Monitoring Stations
|
Monitoring Stations |
Location |
Location of Measurement |
|
CM1 |
Nga Lai House, Yau Lai Estate Phase 1, Yau
Tong |
Rooftop (41/F) |
|
CM2 |
Bik Lai House, Yau Lai Estate Phase 1, Yau
Tong |
Rooftop (41/F) |
|
CM3 |
Block S, Yau Lai Estate Phase 5, Yau
Tong |
Rooftop (40/F) |
|
CM4 |
Tin Hau Temple, Cha Kwo Ling |
Ground Level |
|
CM5 |
CCC Kei Faat Primary School, Yau Tong |
Rooftop (6/F) |
Monitoring
Parameters, Frequency and Duration
3.3 Table 3.2 summarizes the monitoring parameters, frequency and total duration of monitoring. The noise monitoring schedule is shown in Appendix D.
Table
3.2 Frequency and Parameters of Noise
Monitoring
|
Monitoring Stations |
Time Period |
Duration |
Frequency |
Parameter |
Measurement |
|
CM1 |
0700-1900 hrs on normal weekdays |
30 minutes |
Once per week |
L10(30
min.) dB(A) L90(30
min.) dB(A) Leq(30 min.) dB(A) |
Façade Measurement |
|
CM2 |
Façade Measurement |
||||
|
CM3 |
Façade Measurement |
||||
|
CM4 |
Façade Measurement |
||||
|
CM5 |
Façade Measurement |
3.4
Integrating Sound Level Meter was
used for impact noise monitoring. The meters were Type 1 sound level meter
capable of giving a continuous readout of the noise level readings including
equivalent continuous sound pressure level (Leq)
and percentile sound pressure level (Lx) that also complied with
International Electrotechnical Commission Publications 651:1979 (Type 1) and
804:1985 (Type 1) specifications. Table 3.3 summarizes the noise monitoring equipment being used by the ET for Agreement No. CE 59/2015 (EP) within the reporting period. Copies of calibration certificates are
attached in Appendix B.
Table
3.3 Noise Monitoring Equipment
|
Equipment |
Model |
Quantity |
|
Integrating Sound Level Meter |
BSWA 308 (Serial No.: 570183, 570187, 570188) |
3 |
|
Calibrator |
ST-120 (Serial No.: 181001637, 181001608, 181001636) |
3 |
Monitoring Methodology and QA/QC Procedure
3.5 The monitoring procedures are as follows:
· The monitoring station was normally be at a point 1m from the exterior of the sensitive receivers building façade and be at a position 1.2m above the ground.
· For free field measurement, the meter was positioned away from any nearby reflective surfaces. All records for free field noise levels were adjusted with a correction of +3 dB(A).
· The battery condition was checked to ensure the correct functioning of the meter.
· Parameters such as frequency weighting, the time weighting and the measurement time were set as follows:
- Frequency weighting: A
- Time weighting: Fast
- Time measurement: 30 minutes
· Prior to and after each noise measurement, the meter was calibrated using a Calibrator for 94.0 dB at 1000 Hz. If the difference in the calibration level before and after measurement was more than 1.0 dB, the measurement would be considered invalid and repeat of noise measurement would be required after re-calibration or repair of the equipment.
· The wind speed was frequently checked with the portable wind meter.
· At the end of the monitoring period, the Leq, L90 and L10 were recorded. In addition, site conditions and noise sources were recorded on a standard record sheet.
·
Noise monitoring would be
cancelled in the presence of fog, rain, and wind with a steady speed exceeding
3.6 The microphone head of the sound level meter and calibrator were cleaned with a soft cloth at quarterly intervals.
3.7 The sound level meter and calibrator were checked and calibrated at yearly intervals.
3.8 Immediately prior to and following each noise measurement the accuracy of the sound level meter was checked using an acoustic calibrator generating a known sound pressure level at a known frequency. Measurements were accepted as valid only if the calibration levels from before and after the noise measurement agree to within 1.0 dB.
3.10 No Action/ Limit Level exceedance was recorded for all construction noise monitoring in the reporting month.
3.11 Noise monitoring results and graphical presentations are shown in Appendix G.
3.12 According to field observations by ET for Agreement No. CE 59/2015 (EP) in the reporting period, the major noise sources identified at the noise monitoring stations are shown in Table 3.4.
Table 3.4 Other Noise Source Identified during
Noise Monitoring
|
Monitoring Stations |
Major Noise Source |
|
CM1 |
Road Traffic near Eastern Cross Harbour
Tunnel Toll Plaza |
|
CM2 |
Road Traffic near Eastern Cross Harbour
Tunnel Toll Plaza |
|
CM3 |
Road Traffic near Eastern Cross Harbour
Tunnel Toll Plaza |
|
CM4 |
Road
Traffic at Cha Kwo Ling Road |
|
CM5 |
Road
Traffic near Eastern Cross Harbour Tunnel Toll
Plaza |
.
Table 3.5 Baseline Noise Level and Noise Limit
Level for Monitoring Stations
|
Monitoring Stations |
Baseline
Noise Level, dB (A) |
Noise
Limit Level, dB (A) (at 0700 – 1900 hrs on normal weekdays) |
|
CM1 |
65.5 |
75 |
|
CM2 |
63.6 |
|
|
CM3 |
65.6 |
|
|
CM4 |
62.0 |
|
|
CM5 |
68.2 |
70* |
(*)
Noise Limit Level is 65 dB(A) during school examination periods.
Comparison of EM&A Result with EIA Prediction
3.13 The noise monitoring data was compared with the predictions in Table 4.15 of EIA Report (AEIAR-173/2013) as summarised in Table 3.6.
Table 3.6
Maximum Predicted Mitigated Construction Noise Levels in EIA Report
|
Monitoring Stations |
NSR ID |
Maximum Predicted Mitigated
Construction Noise Levels in EIA Report (AEIAR-173/2013),
dB(A) |
Maximum Construction Noise Levels in
the Reporting
Month |
|
CM1 – Nga Lai
House, Yau Lai Estate Phase 1, Yau
Tong |
N1102 |
73 |
74.3 |
|
CM2 – Bik Lai House, Yau Lai Estate Phase 1, Yau Tong |
N1204 |
75 |
73.9 |
|
CM3 – Block S, Yau Lai Estate Phase 5, Yau Tong |
N2105 |
75 |
72.9 |
|
CM4 – Tin Hau Temple, Cha Kwo Ling |
N3101a |
73 |
64.4 |
|
CM5 – CCC Kei Faat Primary School, Yau Tong |
N4101 |
71 |
70.8 |
3.14 The results at CM2, CM3, CM4 and CM5 were lower than the maximum predicted mitigated construction noise level in the EIA Report, AEIAR-173/2013 (as approved in 2013). Besides, the results at CM1 was higher than the maximum predicted mitigated construction noise level in the EIA Report, this may due to the fluctuation of road traffic along Eastern Cross Harbour Tunnel Toll Plaza. No Limit level exceedance was recorded in the reporting period.
Groundwater Quality
4.1 The existing groundwater quality monitoring programme has been suspended as the monitoring results had been deemed non-representative of the impact from the project justified by two major factors: (1) influence on the monitoring results from non-project related factors, such as anthropogenic activities and natural phenomenon; and (2) large separation between the monitoring stations and works area. In addition, as no alternative locations for the groundwater quality monitoring were available, the groundwater quality monitoring has been suspended since October 2019 upon the agreement by EPD.
Marine Water Quality
4.2 According to Section 4.4.3 of EM&A Manual (AEIAR-173/2013), marine water quality impact monitoring stations is carried out during marine construction for TKOLTT reclamation. Since the construction of Cha Kwo Ling Tunnel from the end of Trunk Road T2 to the TKOLTT at the Eastern Ventilation Building does not involve reclamation, the marine water quality monitoring programme stated in Section 4.4 of the EM&A Manual (AEIAR-173/2013) is therefore not applicable to Contract No. ED/2018/04.
Groundwater Level Monitoring
(Piezometer Monitoring)
4.3
According to Section 4.1.2 of EM&A Manual (AEIAR-173/2013), daily piezometer monitoring will be carried out on a
daily basis when any tunnel construction activities are carried out within +/-
50m of the piezometer gate in plan. As the construction works of Cha Kwo Ling Tunnel from the end of Trunk Road T2 to the TKOLTT
at the Eastern Ventilation Building is approximately 120m away from the piezometer gate in plan, the piezometer monitoring programme
stated in Section 4.2 of the EM&A Manual (AEIAR-173/2013) is therefore not applicable to Contract No. ED/2018/04.
5.1 According to Section 5.1.2 of the EM&A Manual (AEIAR-173/2013), Waste materials generated during construction activities, such as construction and demolition (C&D) materials and general refuse, are recommended to be audited at regular intervals (at least quarterly) to ensure that proper storage, transportation and disposal practices are being implemented by the Contractor. To fulfil this requirement, site audits are carried out on a weekly basis. The summaries of site audits are attached in Appendix I.
5.2 With reference to relevant handling records of this Project, the quantities of different types of waste generated in the reporting month are summarised and presented in Appendix H.
Post-Translocation Coral Monitoring
6.1 Post-translocation monitoring survey is recommended in Section 6.2.5 of the EM&A Manual (AEIAR-173/2013), to audit the success of coral translocation. Since the construction of Cha Kwo Ling Tunnel from the end of Trunk Road T2 to the TKOLTT at the Eastern Ventilation Building does not involve any marine works in the concerned area mentioned in Section 6.1.2 of the EM&A Manual (AEIAR-173/2013), the post-translocation monitoring survey stated in Section 6.2.5 of the EM&A Manual (AEIAR-173/2013) is therefore not applicable to Contract No. ED/2018/04.
7.1 According to Section 7.1.3 of EM&A Manual (AEIAR-173/2013), no specific fisheries monitoring programme is required during the construction phase.
7.2 The implementation of the mitigation measures stated in the Water Quality Impact Assessment (Refer to Section 5 of EIA Report (AEIAR-173/2013)) will be audited as part of the EM&A procedures during the construction period. The summaries of site audits are attached in Appendix I.
8.1 According to Condition 3.7 of EP-458/2013/C and Section 8.2.1 of the EM&A Manual (AEIAR-173/2013), monitoring of vibration impacts was conducted when the construction works are less than 100m from the Built Heritage in close proximity of the worksite, namely the Cha Kwo Ling Tin Hau temple. Tilting and settlement monitoring should be applied on the Cha Kwo Ling Tin Hau Temple.
8.2 As the construction works of Cha Kwo Ling Tunnel from the end of Trunk Road T2 to the TKOLTT at the Eastern Ventilation Building are located more than 100m away from the Cha Kwo Ling Tin Hau temple, the vibration impact monitoring stated in Section 8.3.1 of the EM&A Manual (AEIAR-173/2013) is not applicable to Contract No. ED/2018/04.
Mitigation Measures for
Cultural Heritage
8.3
According to Condition 3.6 of
EP-458/2013/C, to prevent damage to Cha Kwo Ling Tin Hau Temple and its
Fung Shui rocks (Child-given rocks) during the construction phase, a temporarily fenced-off buffer
zone (Rocks buffer zone is 5 m from the edge of Rocks and 15m from the edge of
Rocks alter) with allowance for public access (minimum 1 m) around the temple
and the Fung Shui rocks shall be provided. The open yard in front of the temple should be kept as usual for
annual Tin Hau festival.
8.4
As there is a large buffer
distance from the current works to Cha Kwo Ling Tin Hau
Temple and the Fung Shui rocks (Child-given rocks), the
temporarily fenced-off rocks buffer zone and from the edge of Rocks alter is not required. The fenced-off rocks buffer zone would be
implemented when there is construction activities in vicinity of the cultural
heritage.
9.1
According to Section 9.3 of the
EM&A Manual (AEIAR-173/2013), landscape and visual mitigation measures
during the construction phase shall be checked to ensure that they are fully
realized and implemented on site.
9.2
Site audits were carried out on a weekly basis to monitor and audit the
timely implementation of landscape and visual mitigation measures listed in “Environmental Mitigation Implementation Schedule (EMIS)” (shown in Appendix J).
9.3
The implementation of landscape and visual mitigation measures was
checked by a registered landscape architect. No non-compliance of the landscape
and visual impact was recorded in the reporting month. Details of the audit
findings and implementation status are presented in Appendix I.
10.1 In accordance with Section 10.1.1
of the EM&A Manual (AEIAR-173/2013), monitoring of landfill gas is required for construction works within
the Sai Tso Wan Landfill Consultation Zone during the construction phase. This
section presents the results of landfill gas measurements performed by the
Contractor of Agreement No. CE 59/2015 (EP). Appendix A shows the Limit Levels for the monitoring works.
10.2
The “Landfill Gas Monitoring Proposal”,
including the monitoring programme and detailed actions, is submitted to the
EPD for approval. Details of monitoring in this Proposal is in line with the monitoring
requirements stipulated in the EM&A Manual.
10.3 Monitoring parameters for Landfill gas monitoring include Methane,
Carbon dioxide and Oxygen.
10.4
According to the implementation
schedule and recommended mitigation measures of the EM&A Manual,
measurements of the following frequencies should be carried out:
Excavations
deeper than 1m
at the ground surface before excavation commences;
immediately before any worker enters the
excavation;
at the beginning of each working day for the entire
period the excavation remains open; and
periodically throughout the working day whilst
workers are in the excavation.
Excavations
between 300mm and 1m deep
directly after the excavation has been completed;
and
periodically whilst the excavation remains open.
For
excavations less than 300mm deep
·
monitoring
may be omitted, at the discretion of the Safety Officer or other appropriately
qualified person
10.5 Monitoring of oxygen, methane and carbon dioxide was performed for
excavations at 1m depth or more within the Consultation Zone.
10.6 Table 10.1 summarizes the equipment
employed by the Contractor of Agreement No. CE 59/2015 (EP) for the landfill gas monitoring.
Table 10.1 Landfill
Gas Monitoring Equipment
|
Equipment |
Model and
Make |
Quantity |
|
Portable
gas detector |
ALTAIR
5X Multigas Detector (Serial
No. 152097) |
1 |
10.7
As informed by the ET of TKOLTT
project that due to the epidemic situation of COVID-19, the Construction site
and office of TKOLTT was temporarily closed in December 2020. Therefore, the
landfill gas monitoring data for December 2020 cannot be provided in the
previous monthly EM&A report (December 2020). The data results of landfill
gas monitoring in December 2020 and January 2021 are provided in the Appendix K. Landfill gas monitoring was
carried out by the Contractor of Agreement No. CE 59/2015 (EP) on 26 and 18
occasions in December 2020 and January 2021 respectively. No Limit Level
exceedance for landfill gas monitoring was recorded in the reporting month of
December 2020 and January 2021. Copies of calibration
certificates are attached in Appendix B.
11.1 According to Section 11.1.1 of EM&A Manual (AEIAR-173/2013), as no overnight storage of explosive on site is required for the construction of the Project, the hazard assessment is deemed not necessary. Thus, environmental monitoring and audit is not required.
12.1 Site audits were carried out on a weekly basis to monitor the timely implementation of proper environmental management practices and mitigation measures in the Project site. The summaries of site audits are attached in Appendix I.
12.2 Site audits were conducted on 07, 14, 21 and 28 January 2021 in the reporting month. Site inspection of the IEC was conducted on 14 January 2021. No non-compliance was observed during the site audit.
12.3 According to Environmental Permits, the approved EIA Reports (Register No.: AEIAR-174/2013 and AEIAR-173/2013), and the EM&A Manuals of the Project (AEIAR-174/2013 and AEIAR-173/2013), the mitigation measures detailed in the documents are recommended to be implemented during the construction phase. An Environmental Mitigation Implementation Schedule (EMIS) is provided in Appendix J.
12.4
The ET weekly site inspections
were carried out during the reporting month and the observations and
recommendations are summarized in Table
12.1. Refer to Appendix I for
the site inspection summary reports in the reporting month.
Table 12.1
Observations and Recommendations of Site Audit
|
Parameters |
Date |
Observations
and Recommendations |
Follow-up |
|
Air Quality |
N/A |
There was no
observation in the reporting period. |
N/A |
|
Noise |
N/A |
There was no
observation in the reporting period. |
N/A |
|
Water Quality |
N/A |
There was no
observation in the reporting period. |
N/A |
|
Ecology |
N/A |
There was no observation
in the reporting period. |
N/A |
|
Landscape and Visual |
N/A |
There was no
observation in the reporting period. |
N/A |
|
Waste / Chemical
Management |
N/A |
There was no
observation in the reporting period. |
N/A |
|
Permits /Licences |
N/A |
There was no observation
in the reporting period. |
N/A |
12.5 The Event and Action Plans for air quality and construction noise monitoring, and the Limit Levels and Action Plan for landfill gas monitoring are presented in Appendix L.
Air Quality Monitoring
· No Action/Limit Level exceedance for 1-hour TSP monitoring was recorded.
· No Action/Limit Level exceedance for 24-hour TSP monitoring was recorded.
Construction Noise
Monitoring
· No Action/ Limit Level exceedance for construction noise monitoring was recorded in the reporting month.
Landfill Gas Monitoring
· No Limit Level exceedance for landfill gas monitoring was recorded in the reporting month of December 2020 and January 2021.
13.1 The summaries of environmental complaint, warning, summon and notification of successful prosecution for the Project is presented in Appendix M.
13.2
The summary of exceedance
record in the reporting month is shown in Appendix
N.
14.1 Tentative construction programmes for the next three months are provided in Appendix O.
14.2 Major site activities undertaken for the coming months are summarized as follows:
West Bound – Drill & Break Tunnel
East Bound – Drill & Blast Tunnel
14.3 Key environmental issues in the coming months include:
Make sure noise mitigation measures are implemented accordingly; and
Make sure drainage system is adequately designed to prevent flooding during periods of heavy rain.
14.4 The tentative environmental monitoring schedule for the next month is shown in Appendix D.
15.1 This is the 9th Monthly EM&A Report which presents the EM&A works undertaken during the reporting month in accordance with the EM&A Manual (AEIAR-173/2013) and the requirement under EP.
Air Quality Monitoring
15.2 No Action/Limit Level exceedance was recorded for 1-hour TSP and 24-hour TSP monitoring in the reporting month.
Construction Noise Monitoring
15.3 No Action/ Limit Level exceedance for construction noise monitoring was recorded in the reporting month.
Landfill Gas Monitoring
15.4 Monitoring of landfill gases in the reporting month was carried out by the Contractor of Agreement No. CE 59/2015 (EP). No Limit Level exceedance for landfill gas monitoring was recorded in the reporting month of December 2020 and January 2021..
Site Audit
15.5 4 ET joint weekly environmental site inspections were conducted in the reporting month.
Complaint, Notification
of Summons and Successful Prosecution
15.6 No environmental complaints was received in the reporting month. And No environmental notifications of summons and successful prosecutions were received in the reporting month.
15.7 According to the environmental audit performed in the reporting month, the following recommendations were made:
Noise
Noise mitigation measures, i.e. erecting noise barriers, shall always be
implemented on site to minimize construction noise generated from construction
activities.