EXECUTIVE SUMMARY
1.
This is the 28th
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 August 2022.
2.
The main works undertaken during the reporting
period are as follows:
·
East Bound – Type A Bench
·
East Ventilation Building
Basement Excavation & Base Slab Construction
·
West Bound – Drill & Blast
Tunnel, Blasting
·
Drill & Blast Tunnel -
Civil Works, Kicker concreting
·
Service Gallery Installation
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
|
N/A(1)
|
N/A
|
N/A(1)
|
N/A
|
N/A
|
|
Note: (1): No Action Level for Landfill Gas
Monitoring.
|
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 due to documented complaint in the
reporting month. The Summary of Documented Complaints in the Reporting Month is
tabulated in Table III.
9.
No Limit Level exceedance for day time construction noise monitoring were recorded
in the reporting month. Detail shall refer to Appendix N.
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. Since no excavation activity
for this Project was carried out within the Sai Tso Wan Landfill Consultation Zone
in the reporting month, no landfill gas monitoring is required
Hazard to Life Monitoring
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
Table II Summary
of Complaints, Notifications of Summons and Successful Prosecutions in the
Reporting Month
|
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
|
|
-
|
-
|
-
|
23. No reporting change is recorded in the
reporting months.
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 (September 2022)
|
Key
Environmental Issues
|
|
|
|
1. East Bound – Type A Bench
2. East Ventilation Building Basement Excavation &
Base Slab Construction
3. West Bound – Drill & Blast Tunnel, Blasting
4. Drill & Blast Tunnel - Civil Works, Kicker concreting
5. Service Gallery Installation
|
(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
INTRODUCTION
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 28th Monthly EM&A Report which summarises the impact monitoring results and audit
findings for the EM&A programme during the reporting period in August 2022.
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
|
Ms. Hazel Tang
|
2149 8524
|
|
Cinotech
|
Environmental
Team
|
Mr. KS Lee
(ETL)
|
2151 2091
|
|
Ms. Karina
Chan
|
2157 3880
|
|
Ramboll
|
Independent Environmental
Checker
|
Mr. YH Hui
|
3465 2850
|
|
BTP
|
Contractor
|
Ms. Ality Chan
|
5185 4462
|
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:
·
East Bound – Type A Bench
·
East Ventilation Building
Basement Excavation & Base Slab Construction
·
West Bound – Drill & Blast
Tunnel, Blasting
·
Drill & Blast Tunnel -
Civil Works, Kicker concreting
·
Service Gallery Installation
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.
1.12
The advice on the
implementation status of environmental protection and pollution
control/mitigation measures is summarized in Section 12 of this 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 August 2022.
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
Q): GW-RE0227-22
|
24 Mar 2022
|
23 Sep 2022
|
Valid
|
|
CNP No. (For
Portion T1): GW-RE0622-22
|
07 Jul 2022
|
06 Oct 2022
|
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
|
Monitoring Stations
|
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)
(**) AM4(A) is not available for conducing
monitoring due to the demolition of administrative office. Relocation of
monitoring station is under progress and no 24 hr TSP monitoring being
conducted prior to the approval of relocation from EPD. Detail refer to S2.13
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
|
|
(*): No 24 hr TSP monitoring being conducted prior to
the approval of relocation from EPD.
|
Monitoring Equipment
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.: 972781, 972778, 972779, 972780)
|
4
|
|
HVS Sampler
|
GMW model: GS2310
(Serial No.: 1287, 10379, 10599)
|
3
|
|
TE 5170 (Serial No.: 1956)
|
1
|
|
Calibrator
|
TISCH Model: TE-5025A
(Serial No.: 3864)
|
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 and AM4 are completed by the ET of Agreement
No. CE 59/2015 (EP), and the data will be adopted in this report. The 24 TSP Monitoring at AM4(A) is suspended and under application for
relocation in this reporting month. Once the proposal for relocation is
approved, the monitoring at AM4(A) will at conducted at AM4(B). For the time
being, as the station CKL2 for the 24 hr TSP monitoring, carried out under
EM&A works for Trunk Road T2 Project (EP- 451/2013), is located in close
proximity to AM4(A); the results from CKL2 are adopted as reference for the 24
TSP monitoring at AM4(A), which has similar environment when compared with that
for CKL2. The location of monitoring station CKL2 is shown in Figure 2.
2.14
The impact air quality
monitoring was conducted at all five monitoring stations as scheduled. The
monitoring schedule is shown in Appendix
D.
2.15
No Action/ Limit Level
exceedance were recorded for 24-hour TSP monitoring in the reporting month.
2.16
No Action/ Limit Level
exceedance was recorded for 1-hour TSP monitoring in the reporting month.
2.17
The monitoring data and
graphical presentations of 1-hour and 24-hour TSP monitoring results are shown
in Appendix E and Appendix F respectively.
2.18
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,
non-project related influence and the construction activity from other
construction site
|
|
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, non-project related influence and the construction activity from
other construction site
|
|
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(*)
|
|
(*): Field observation
observed at CKL2 during monitoring is presented. Detail refer to S2.13.
|
Comparison
of EM&A Result with EIA Prediction
2.19 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
(August 2022),
μg/m3
|
|
AM1 – Tin Hau Temple
|
CL1
|
707
|
60.9
|
|
AM2 – Sai Tso Wan Recreation Ground
|
CL6
|
266
|
50.6
|
|
AM3 – Yau Lai Estate Bik Lai House
|
CL9
|
507
|
52.5
|
|
AM4 - Sitting-out Area at Cha Kwo Ling Village
|
CL16
|
430
|
63.0
|
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
(August 2022),
μg/m3
|
|
AM1 – Tin Hau Temple
|
CL1
|
199
|
172.0
|
|
AM2 – Sai Tso Wan Recreation Ground
|
CL6
|
109
|
54.4
|
|
AM3 – Yau Lai Estate Bik Lai House
|
CL9
|
123
|
27.8
|
|
AM4(A) - Cha Kwo Ling Public Cargo Working Area Administrative Office (*)
|
N/A(1)
|
N/A(1)
|
79.3 (**)
|
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)
(**): Monitoring results at CKL2 is
presented. Detail refer to S2.13
2.20 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.
2.21 In the reporting month, the 24-hour TSP concentrations at AM1 AM2
and AM3 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.
3
noise
Monitoring Requirements
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.
Monitoring Locations
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
|
Monitoring Equipment
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
|
SVAN 957 (Serial No.: 23852,
21455)
|
2
|
|
Calibrator
|
ST-120 (Serial
No.: 181001608)
|
1
|
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 5 m/s, or wind with gusts exceeding 10 m/s. Supplementary monitoring would be provided to ensure sufficient data
would be obtained.
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.
Results
and Observations
3.9
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.
3.10
No Action Level exceedance was
recorded due to the documented complaint in the reporting month.
3.11
No Limit Level exceedance was
recorded for day-time construction noise monitoring in the reporting month.
3.12
Noise monitoring results and
graphical presentations are shown in Appendix
G.
3.13
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, non-project related
construction activities
|
|
CM2
|
Road
Traffic near Eastern Cross Harbour Tunnel Toll Plaza, non-project related
construction activities
|
|
CM3
|
Road
Traffic near Eastern Cross Harbour Tunnel Toll Plaza non-project related
construction activities
|
|
CM4
|
Road Traffic at
Cha Kwo Ling Road, non-project related construction activities
|
|
CM5
|
Road Traffic
near Eastern Cross Harbour Tunnel Toll Plaza,
Construction activity
from other construction site,
Road Traffic at
Yau Tong Road
|
.
Table 3.5 Baseline Noise Level and Noise Limit
Level for Monitoring Stations
|
Monitoring
Stations
|
Baseline Noise
Level, dB (A)
(at 0700 – 1900 hrs on normal weekdays)
|
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
3.14 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
(August 2022),
Leq (30min) dB(A)
|
|
CM1 – Nga Lai
House, Yau Lai Estate Phase 1, Yau Tong
|
N1102
|
73
|
74.9
|
|
CM2 – Bik Lai
House, Yau Lai Estate Phase 1, Yau Tong
|
N1204
|
75
|
74.3
|
|
CM3 – Block S,
Yau Lai Estate Phase 5, Yau Tong
|
N2105
|
75
|
74.1
|
|
CM4 – Tin Hau
Temple, Cha Kwo Ling
|
N3101a
|
73
|
68.3
|
|
CM5 – CCC Kei
Faat Primary School, Yau Tong
|
N4101
|
71
|
71.2
|
3.15 The result at CM1 and CM5 were higher than the maximum predicted
mitigated construction noise level in the EIA Report, AEIAR-173/2013 (as
approved in 2013), that may due to the fluctuation of road traffic near Eastern
Cross Harbour Tunnel Toll Plaza, Yau Tong Road and the non-project related
construction activities. However, the results at CM2, CM3 and CM4 were lower
than the maximum predicted mitigated construction noise level in the EIA
Report, AEIAR-173/2013 (as
approved in 2013). No Limit level exceedance was
recorded in the reporting period.
4
Water quality
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
fisheries
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. Since no
excavation activity for this Project was carried out within the Sai Tso Wan
Landfill Consultation Zone in the reporting month, no landfill gas monitoring
is required.
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
ENVIRONmental audit
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
04, 11, 18 and 24 August 2022 in the reporting month. Site inspection of the
IEC was conducted on 24 August 2022. No non-compliance was observed during the
site audit.
Implementation
Status of Environmental Mitigation Measures
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
|
24 August 2022
|
|
To
be reported in the next month
|
|
Noise
|
N/A
|
|
N/A
|
|
Water Quality
|
N/A
|
|
N/A
|
|
Ecology
|
N/A
|
|
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
|
|
|
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 Level exceedance was
recorded due to the documented complaint in the reporting month.
·
No Limit Level exceedance for construction
noise monitoring was recorded in the reporting month.
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:
·
East Bound – Type A Bench
·
East Ventilation Building
Basement Excavation
·
West Bound – Drill & Blast
Tunnel, Blasting
·
Drill & Blast Tunnel -
Civil Works, Kicker concreting
·
Service Gallery Installation
14.3
Key environmental issues in the
coming months include:
·
Make sure noise mitigation
measures are implemented accordingly;
·
Make sure drainage system is
adequately designed to prevent flooding during periods of heavy rain; and,
·
Make sure mitigation measure
for dust suppression are implemented on site.
14.4
The tentative environmental
monitoring schedule for the next month is shown in Appendix D.
14.5
This is the 28th 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
14.6
No Action/Limit Level exceedance was recorded for 1-hour TSP monitoring
in the reporting month.
14.7
No Action/ Limit Level exceedance was recorded
for 24-hour TSP monitoring in the reporting month.
Construction Noise Monitoring
14.8
No Action Level exceedance was recorded
due to documented complaint in the reporting month.
14.9
No Limit Level exceedance for construction noise
monitoring was recorded in the reporting month.
Site Audit
14.10 4 ET joint weekly environmental site inspections were conducted in
the reporting month.
Complaint,
Notification of Summons and Successful Prosecution
14.11 No environmental complaint was received in the reporting period. No
notifications of summons and successful prosecutions were received in the
reporting month.
14.12 According to the environmental audit performed in the reporting
month, the following recommendations were made:
Air quality:
·
The valid NRMM labels should be displayed at a conspicuous position on
PME.
