1.
This is the 5th
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-451/2013 and in accordance with the EM&A Manual (AEIAR-174/2013) during
the reporting month of July 2020.
2.
The main works undertaken
during the reporting period are as follows:
Kai Tak:
·
Contractor’s and SOR(MIC) Site
Offices in Portion A3
·
CLC building fabrication
·
GI Works for the D-wall works
at the Depressed Road
·
Depressed Road – Sheet Piling
·
Depressed Road – Diaphragm Wall
·
Launching Shaft / C&C
Tunnel CSM
·
Launching Shaft / C&C
Tunnel Diaphragm Wall
·
Ground improvement works for
PWCL at Portion N3
·
Road S20 – Road & Drain
Cha Kwo Ling:
·
East Portal – Site Setup
·
East Portal – Blast door (EB)
installation
·
Portal rock bolt installation
·
Horizontal GI for EB
·
CKL Junction Improvement works
3.
Implementation of the key
mitigation measures during the reporting period are as follows:
Air Quality
·
Water spraying regularly on
construction site area to avoid dust generation.
·
Excavated dusty materials were
covered by impervious sheets.
Noise
·
Air compressor was operated
with door closed and have valid noise labels.
·
Use of Quality Powered
Mechanical Equipment (QPME)
Water Quality
·
WetSep was constructed to treat
the surface runoff prior to discharge.
Landscape and Visual
·
Tree protection zone were
fenced off to protect the existing tree.
4.
Exceedance of Action/Limit levels
during the reporting month (July 2020) and the investigation results and/or
follow-up actions:
Air Quality Monitoring
·
No Action/Limit Level
exceedance for 24-hour TSP was recorded.
·
No Action/Limit Level
exceedance for 1-hour TSP was recorded.
Construction Noise
Monitoring
·
One (1) Action Level exceedance
was recorded due to the documented complaint received in this reporting month.
·
No Limit Level exceedance for
day time construction noise monitoring was recorded in the reporting month.
Landscape and Visual
Monitoring and Audit
·
No non-compliance of the
landscape and visual impact was recorded in the reporting month. The
implementation of landscape and visual and mitigation measures was checked by a
Registered Landscape Architect (RLA) during the environmental site inspections.
Table I Summary of Complaint/Summons/Prosecution in
the Reporting Month
|
Event
|
Event Details
|
Follow-up/
Remedial Actions
|
Status/
Remarks
|
|
Number
|
Brief
Description
|
|
Complaints Received
|
2(1)
|
Dust nuisance
possibly caused by the construction works at the Launching Shaft area.(1)
|
·
Training regarding the loading and unloading
height control was provided to the labourers to ensure dusty materials are
transported under a minimum practical height.(1)
·
Water sprays system was installed around the
location of complaint to prevent dust generated from wind erosion on the
stockpile.(1)
·
Contractor was reminded to further enhance the
dust mitigation measures to minimize the dust nuisance.(1)
|
Closed(1)
|
|
A verbal
complaint regarding the noise nuisance generated from D-wall cutter operation
nearby the PWCL building was received by CEDD
|
·
Noise barrier was erected between noise source
and the PWCL building.
·
Construction programme was reviewed as to
minimize operation of PME nearby the PWCL building
·
Contractor was recommended to implement the noise
mitigation measures and other good site practices to minimize the noise
nuisance.
|
Closed
|
|
Notification of Summons and Prosecutions
Received
|
0
|
-
|
-
|
-
|
|
Public Engagement Activities
|
0
|
-
|
-
|
-
|
|
Remark:
(1): One compliant was
received in the previous reporting month (June 2020). And the relevant
findings are presented in this report after the completed investigation.
|
5.
The key works or activities will
be anticipated in the next reporting period are as follows:
Table II
Summary Table for Site Activities in the next Reporting Period
|
Site Activities (August 2020)
|
Key
Environmental Issues
|
|
|
|
1. 132kV substation
ELS and Structure Construction at Portion M1
2. Pre-boring
and Sheet Piling Works
3. Guide wall
Construction and D-wall Construction
4. Pump Test and
Dewatering Well
5. TAM Grouting
Works
6. Existing Slab
Breaking
|
(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 Kai Tak under EP-451/2013
1.4
Under
Contract No. KL/2014/03 - Kai Tak Development - Stage 3 Infrastructure Works
for Development at the Southern Part of the Former Runway (“T2 Advance Works”),
the baseline monitoring works in Kai Tak under the EM&A Manual
(AEIAR-174/2013) were conducted by the Environmental Team (ET) for the Contract No. KL/2014/03 at the
approved relocated monitoring locations (EPD reference: EP2/K19/A/21 pt.5),
namely KTD1a, KTD2a & KER1a. During the impact monitoring period,
monitoring locations KTD 2a and KER 1a were relocated to new locations, i.e.
KTD 2b and KER 1b (EPD reference: ( ) in EP2/K19/A/21 pt. 6 and ( ) in
EP2/K19/A/21 pt. 5) respectively. Location KTD2b was
then further relocated to location KTD2c, the proposal of such relocation was
submitted to EPD on 24 March 2020 and was approved by EPD on 6 April 2020 (EPD
reference: ( ) in EP2/K19/A/21 pt.7). The aforementioned relocation was
effective from 9 April 2020. Impact
monitoring within the Kai Tak area shall be conducted by the ET of Contract No.
ED/2018/04 upon cessation of such monitoring by Contract No. KL/2014/03. The
data obtained from the impact monitoring works completed by the ET of Contract
No. KL/2014/03 will be adopted in this report.
Monitoring Works in Cha Kwo Ling under
EP-451/2013
1.5
The
environmental impact of the remaining works in Cha Kwo Ling, under EP-451/2013,
shall be monitored at the two proposed stations, namely CKL1, CKL2, in
accordance to the EM&A Manual (AEIAR-174/2013). The impact
monitoring for the two proposed stations shall be conducted by the ET of T2
Main Works.
1.6
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”).
1.7
This is
the 5th Monthly EM&A Report which summarises the impact monitoring results and audit
findings for the EM&A programme during the reporting period in July 2020.
1.8
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)
1.9
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
|
3742 3820
|
|
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
|
1.10
The Organizational Structure for Environmental Management is shown in Figure 1.2.
Construction Activities
undertaken during the Reporting Month
1.11
The major site activities
undertaken in the reporting month included:
Kai Tak:
·
Contractor’s and SOR(MIC) Site
Offices in Portion A3
·
CLC building fabrication
·
GI Works for the D-wall works
at the Depressed Road
·
Depressed Road – Sheet Piling
·
Depressed Road – Diaphragm Wall
·
Launching Shaft / C&C
Tunnel CSM
·
Launching Shaft / C&C Tunnel
Diaphragm Wall
·
Ground improvement works for
PWCL at Portion N3
·
Road S20 – Road & Drain
Cha Kwo Ling:
·
CKL Junction Improvement works
·
East Portal – Site Setup
·
East Portal – Blast door (EB)
installation
·
Portal rock bolt installation
·
Horizontal GI for EB
1.12
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:
Ÿ
All monitoring parameters;
Ÿ
Action and Limit levels for all
environmental parameters;
Ÿ
Event Action Plans;
Ÿ
Environmental mitigation
measures, as recommended in the Project EIA Report.
1.13
The advice on the
implementation status of environmental protection and pollution control/mitigation
measures is summarized in Section 10
of this report.
1.14
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 July 2020.
Status of Environmental
Licensing and Permitting
1.15
All permits/licenses obtained for the Project are summarized
in Table 1.3.
Table 1.3 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 Depressed Road):
GW-RE0287-20
|
28 Apr 2020
|
24 Oct 2020
|
Valid
|
|
CNP No. (For Portion A3): GW-RE0293-20
|
28 Apr 2020
|
25 Oct 2020
|
Valid
|
|
CNP No. (For Launching Shaft and Barging Point):
GW-RE0326-20
|
11 May 2020
|
25 Oct 2020
|
Valid
|
|
CNP No. (For Launching Shaft and Barging Point):
GW-RE0459-20
|
15 Jun 2020
|
10 Dec 2020
|
Valid
|
|
CNP No. (For Site Office and Support Area): GW-RE0588-20
|
15 Jul 2020
|
14 Jan 2021
|
Valid
|
|
Wastewater Discharge License
|
|
Nil
|
|
Chemical Waste Producer License
|
|
WPN: 5213-286-B2557-03
|
09 Mar 2020
|
N/A
|
Valid
|
1.16
According to the information provided
by contractor and confirmed by RE, contractor has applied the wastewater
discharge license for site office and supporting area on 17 January; and,
Launching shaft and Depressed road on 26 February. However, they are still
awaiting for the reply from EPD as the application progresses maybe effected
due to the Coronavirus pandemic. ET has chased the contractor up about the
progression of wastewater discharge licences application.
2.1
According to the EM&A
Manual (AEIAR-174/2013), 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 24-hour TSP monitoring. In case of complaints,
1-hour TSP monitoring should be conducted at least three times in every six
days when the highest dust impacts are likely to occur. 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.
2.3
According to the approved
alternative baseline air quality monitoring locations (EPD reference:
EP2/K19/A/21 pt.5), the original monitoring locations (KTD1, KTD2 and KER1) are
proposed to be replaced by alternative monitoring locations (KTD1a, KTD2a and
KER1a) for air quality monitoring. During the impact monitoring period,
monitoring locations KTD 2a and KER 1a were relocated to new locations, i.e.
KTD2b and KER 1b (EPD reference: (
) in EP2/K19/A/21 pt. 6 and ( ) in EP2/K19/A/21 pt. 5)
respectively. Location KTD2b was then further relocated to location KTD2c, the
proposal of such relocation was submitted to EPD on 24 March 2020 and was
approved by EPD on 6 April 2020 (EPD reference: ( ) in EP2/K19/A/21 pt.7). The
aforementioned relocation was effective from 9 April 2020.
Table 2.1 Air Quality Monitoring Locations
|
Monitoring
Stations
|
Location
|
|
KTD1a
|
Centre of Excellence in Paediatrics
(Children’s Hospital)
|
|
KTD2c
|
G/IC Zone next to Kwun Tong Bypass (Next to
the Kowloon Bay Sewage Interception Station)
|
|
KER1b
|
Site Boundary at Cheung Yip Street
|
|
CKL1
|
Flat 121 Cha Kwo Ling Village
|
|
CKL2
|
Flat 103 Cha Kwo Ling Village
|
2.4
Table 2.2 summarizes the monitoring
parameters, monitoring period and frequencies of impact air quality monitoring.
The monitoring schedule is shown in Appendix
B.
Table 2.2
Frequency and Parameters of Air Quality Monitoring
|
Monitoring Stations
|
Parameter
|
Period
|
Frequency
|
|
KTD1a, KTD2c,
KER1b, CKL1 & CKL2
|
1-hour TSP
|
0700 – 1900
|
3 times per 6 days (as required in
case of complaints)
|
|
KTD1a, KTD2c,
KER1b, CKL1 & CKL2
|
24-hour TSP
|
24 hours
|
Once every 6
days
|
2.5
High Volume Samplers (HVS) in
compliance with the specification stipulated in the EM&A Manual (AEIAR-174/2013),
Section 2.2.1.4, 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.
2.6
Wind data monitoring equipment
was set at rooftop (about 41/F) of Yau Lai
Estate Bik Lai House, Lam Tin for logging wind speed and
wind direction such that the wind sensors were clear of obstructions or
turbulence caused by building. The wind data monitoring equipment was
re-calibrated at least once every six months and the wind directions were
divided into 16 sectors of 22.5 degrees each. Wind data is attached in Appendix D.
2.7
Table 2.3 summarizes the equipment used
for air quality monitoring by the ET for Contract No. ED/2018/04 only. Copies
of calibration certificates are attached in Appendix C.
Table
2.3 Air Quality Monitoring
Equipment
|
Equipment
|
Model
|
Quantity
|
|
1-hour TSP Dust
Meter
|
Sibata Model No. LD-5R (Serial
no. 972779)
|
1
|
|
HVS Sampler
|
TISCH Model: TE-5170 (Serial no. 0723, 1956)
|
2
|
|
Calibrator
|
TISCH Model: TE-5025A (Serial no. 3746)
|
1
|
|
Wind Anemometer
|
Davis Weather Monitor II, Model no. 7440
|
1
|
1-hour TSP Monitoring
Measuring Procedures
2.8
The measuring procedures of the 1-hour dust
meter are in accordance with the Manufacturer’s Instruction Manual as follows:
(Sibata Model No.: LD-3B/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
2.9
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
2.10
High volume samplers (HVS) (TISCH Model: TE-5170) complete with
appropriate sampling inlets was 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). Moreover,
the HVS also met all the requirements in Section 2.2 of the Annex II Specification.
2.11
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
2.12
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-174/2013). 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. and Wellab 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
2.13
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.
2.14
The impact
monitoring works for air quality monitoring locations KTD1a, KTD2c and KER1b
are completed by the ET of Contract No. KL/2014/03, and the data will be
presented in the relevant EM&A Report.
2.15
Impact air quality monitoring
was conducted at five
monitoring stations as scheduled. The
monitoring schedule is shown in Appendix
B.
2.16
A 1-hour TSP monitoring was conducted on 23
July 2020 due to the received complaint related to dust nuisance and no
Action/Limit Level exceedance was recorded for such monitoring in the reporting
month. The monitoring results are tabulated in Appendix E.
2.17
No Action/Limit Level
exceedance was recorded for all 24-hour TSP monitoring in the reporting month.
2.18
The air temperature, relative
humidity, and the precipitation data were obtained from daily extracts of Hong
Kong Observatory Climate Information Service. This weather information for the
reporting month is summarized in Appendix
D.
2.19
The monitoring data and
graphical presentations of 24-hour TSP monitoring results are shown in Appendix F.
2.20
According to field observations
by ET for Contract No. ED/2018/04 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
|
|
CKL1 - Flat 121 Cha Kwo Ling Village
|
Road Traffic
along Cha Kwo Ling Road
|
|
CKL2 - Flat 103 Cha Kwo Ling Village
|
Road Traffic
along Cha Kwo Ling Road
|
2.21
The air monitoring data were
compared with the predictions in Table 4.14 of EIA Report, AEIAR-174/2013 (as
approved in 2013) as summarised in Table
2.5 and Table 2.6 for 1-hour TSP
and 24-hour TSP respectively.
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-174/2013), μg/m3
|
Maximum 1-hr TSP Concentration in the Reporting Month
(July 2020),
μg/m3
|
|
KER1b
- Site Boundary at Cheung Yip Street
|
KTD6
|
451
|
72.5
|
2.22
In the reporting month, the
1-hour TSP concentration at KER1b was lower than the prediction in the EIA
Report, AEIAR-174/2013 (as approved in 2013). No Action/Limit level exceedance
for 1-hour TSP was recorded in the reporting month.
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-174/2013), μg/m3
|
Maximum 24-hr TSP Concentration in the Reporting Month
(July 2020),
μg/m3
|
|
CKL1 - Flat 121 Cha Kwo Ling Village
|
N/A(1)
|
N/A(1)
|
92.2
|
|
CKL2 - Flat 103 Cha Kwo Ling Village
|
N/A(1)
|
N/A(1)
|
85.3
|
Remarks:
(1)
No 24-hr TSP concentration was predicted in EIA
Report (AEIAR-174/2013)
2.23
No Action/Limit level exceedance
for 24-hour TSP was recorded in the reporting period.
3.1
According to the
EM&A Manual (AEIAR-174/2013), 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 KTD1a, KTD2c, KER1b, CKL1 and
CKL2 in the reporting period. Table 3.1 and
Figure 2 show the locations of these
stations.
3.3
According to the approved
alternative baseline noise monitoring locations (EPD reference: EP2/K19/A/21
pt.5), the original monitoring locations (KTD1, KTD2 and KER1) are proposed to
be replaced by alternative monitoring locations (KTD1a, KTD2a and KER1a) for
noise monitoring. During the
impact monitoring period, monitoring locations KTD 2a and KER 1a were relocated
to new locations, i.e. KTD 2b and KER 1b (EPD reference: ( ) in EP2/K19/A/21
pt. 6 and ( ) in EP2/K19/A/21 pt. 5) respectively. Location
KTD2b was then further relocated to location KTD2c, the proposal of such
relocation was submitted to EPD on 24 March 2020 and was approved by EPD on 6
April 2020 (EPD reference: ( ) in EP2/K19/A/21 pt.7).
Table 3.1 Noise Monitoring Stations
|
Monitoring
Stations
|
Location
|
|
KTD1a
|
Centre of Excellence in Paediatrics
(Children’s Hospital)
|
|
KTD2c
|
G/IC Zone next to Kwun Tong Bypass (Next to
the Kowloon Bay Sewage Interception Station)
|
|
KER1b
|
Site Boundary at Cheung Yip Street
|
|
CKL1
|
Flat 121 Cha Kwo Ling Village
|
|
CKL2
|
Flat 103 Cha Kwo Ling Village
|
3.4
Table 3.2 summarizes the monitoring
parameters, frequency and total duration of monitoring. The noise monitoring schedule is shown in Appendix B.
Table 3.2 Frequency and Parameters of Noise
Monitoring
|
Monitoring
Stations
|
Time Period
|
Duration
|
Frequency
|
Parameter
|
Measurement
|
|
KTD1a
|
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
|
|
KTD2c
|
Free Field Measurement
|
|
KER1b
|
Free Field Measurement
|
|
CKL1
|
Free Field Measurement
|
|
CKL2
|
Free Field Measurement
|
3.5
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 Contract No. ED/2018/04 only within the reporting
period. Copies of calibration certificates are attached in Appendix G.
Table
3.3 Noise Monitoring Equipment
|
Equipment
|
Model
|
Quantity
|
|
Integrating Sound Level Meter
|
BSWA308 (Serial no. 570183,
570187)
|
2
|
|
SVAN 957 (Serial no. 21455)
|
1
|
|
Calibrator
|
ST-120 (Serial no. 181001636,
181001637)
|
2
|
|
SV30A (Serial no. 10965)
|
1
|
3.6
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.
3.7
The microphone head of the
sound level meter and calibrator were cleaned with a soft cloth at quarterly
intervals.
3.8
The sound level meter and
calibrator were checked and calibrated at yearly intervals.
3.9
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
The data
obtained from the impact monitoring works completed by the ET of Contract No.
KL/2014/03 will be presented in the relevant EM&A Report.
3.11
Impact noise monitoring was
conducted at five monitoring stations as scheduled. The monitoring
schedule is shown in Appendix B. No
Limit Level exceedance was recorded for all construction noise monitoring in
the reporting month.
3.12
Noise monitoring results and
graphical presentations are shown in Appendix
H.
3.13
According to field observations
by ET for Contract No. ED/2018/04 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
|
|
CKL1
|
Road Traffic along Cha Kwo Ling Road
|
|
CKL2
|
Road Traffic along Cha Kwo Ling Road
|
.
3.14
The baseline noise level and
the Noise Limit Level at each designated noise monitoring station are presented
in Table 3.5.
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)
|
|
CKL1
|
72.4
|
75
|
|
CKL2
|
71.4
|
3.15
The noise monitoring data was
compared with the predictions in Table 5.13 of EIA Report (AEIAR-174/2013) 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-174/2013), dB(A)
|
Maximum Construction Noise Levels in the Reporting
Month
(July 2020),
Leq (30min) dB(A)
|
|
CKL1 - Flat 121 Cha Kwo Ling
Village
|
CKL4
|
71
|
69.9
|
|
CKL2 - Flat 103 Cha Kwo Ling
Village
|
CKL5
|
69
|
69.9
|
Remarks:
(1)
No Maximum Predicted Mitigated Construction Noise
Levels was predicted in EIA Report (AEIAR-174/2013)
3.16
The results at CKL2 was higher than
the maximum predicted mitigated construction noise level in the EIA Report,
AEIAR-174/2013 (as
approved in 2013), this may be due to fluctuations of
traffic flow along Cha Kwo Ling Road throughout the day. The results at CKL1
was lower than the maximum predicted noise level in the EIA Report. No Limit
level exceedance was recorded in the reporting period.
3.17
One (1) documented complaint
was received in the reporting month, therefore, one (1) Action Level exceedance
for construction noise was recorded. According to the Event and Action Plan in
Table 3.3 of EM&A
Manual (AEIAR-174/2013), additional construction noise monitoring should be taken once non-compliances of the
noise criteria occur. The result of the additional
construction noise monitoring are tabulated in Table 3.7.
Table
3.7 Additional Noise Monitoring
Results
|
Location KER1b - Site
Boundary at Cheung Yip Street
|
|
Date
|
Time
|
Weather
|
Unit:
dB (A) (30 min)
|
|
|
Measured
Noise Level
|
Baseline
Level
|
Construction
Noise Level
|
|
L eq
|
L 10
|
L 90
|
L eq
|
L eq
|
|
23
July 2020
|
11:30
|
Sunny
|
73.3
|
77.3
|
68.4
|
65
|
72.6
|
4.1
According to Section 4.3.1.1 of
EM&A Manual (AEIAR-174/2013), no water quality monitoring is required during the construction
phase.
4.2
According to Section 4.3.1.5 of
EM&A Manual (AEIAR-174/2013),
compliance site audits are to be undertaken by the Engineer and ET and escorted
by the Contractor to ensure that a valid discharge license has been issued by
the EPD prior to the discharge of the effluent from the construction activities
of the Project site. Monitoring of the quality of the treated effluent from the
works areas should be carried out in accordance with the Water Pollution
Control Ordinance (WPCO) license. The audit results reflect whether the
effluent quality is in compliance with the discharge license requirements, the summaries of site audits are attached in Appendix I.
4.3
In the event of non-compliance
the responsibilities of the relevant parties is detailed in the Event / Action
plan attached in Appendix J.
5.1
According to Section 5.3.1.1 of
EM&A Manual (AEIAR-174/2013), ET will be required to undertake audit of good site practice for
habitat protection as detailed below. The summaries of site audits are attached
in Appendix I.
·
Avoid damage and disturbance to
the remaining and surrounding natural habitat;
·
Ensure placement of equipment
is within designated areas within the existing disturbed land;
·
Ensure construction activities
are restricted to within the proposed works boundary;
·
Ensure spoil heaps are be
covered at all times;
·
Ensure that disturbed areas are
reinstated immediately after completion of the works; and
·
Ensure enhancement planting
works undertaken.
6.1
According to Section 6.3.1.2 of
EM&A Manual (AEIAR-174/2013), no specific fisheries monitoring and audit programme is required
during the construction phase.
6.2
The implementation of the water
quality mitigation measures stated in the Water Quality Impact Assessment
(Refer to Section 6 of the EIA Report (AEIAR-174/2013)) will be audited as part of the
EM&A procedures during the construction period and the details are
presented in Section 4.2 of this
Report. The summaries of site audits are attached in Appendix I.
7.1
According to the EM&A
Manual (AEIAR-174/2013), a series of mitigation measures were recommended to ameliorate the
landscape and visual impacts of the Project. The mitigation measures for
construction stage are summarized in Table
7.1 below and provided in Appendix K:
Table 7.1 Construction Phase Landscape and Visual
Mitigation Measures
|
ID No.
|
Landscape and Visual Mitigation Measure
|
|
CM1
|
All works shall be
carefully designed to minimize impacts on existing landscape
resources
and visually sensitive receivers. Existing trees within works area shall
be retained
and protected.
|
|
CM2
|
Existing trees of good quality and condition that
are unavoidably affected by the works should be transplanted.
|
|
CM3
|
Not used.
|
|
CM4
|
Not used.
|
|
CM5
|
Large temporary stockpiles
of excavated material shall be covered with unobtrusive sheeting
to prevent dust and dirt spreading to adjacent landscape areas and vegetation,
and to create a neat and tidy visual appearance.
|
|
CM6
|
Construction plant
and building material shall be orderly and carefully stored in order to create a
neat and tidy visual appearance
|
|
CM7
|
Erection of decorative
screen hoarding should be designed to be compatible with the existing urban
context.
|
|
CM8
|
All lighting in construction
site shall be carefully controlled to minimize light pollution and night-time
glare to nearby residences and GIC user. The contractor shall consider other
security measures, which shall minimize the visual impacts.
|
7.2
A specialist Landscape
Sub-Contractor should be employed by the Contractor for the implementation of
landscape construction works and subsequent maintenance operations during the
establishment period. It is proposed that the planting works will be on-site
and the planting should be completed during the construction contract. The
monitoring of the planting establishment should be undertaken for a 12 month
period which could extend throughout the Contractor’s one-year maintenance
period, which will be within the first operational year of the Project.
7.3
All measures undertaken by both
the Contractor and the specialist Landscape Sub-Contractor during the
construction phase and first year of the operational phase shall be audited by
a Registered Landscape Architect (RLA), as a member of the Environmental Team
(ET), on a regular basis to ensure compliance with the intended aims of the
measures. To fulfil the aforementioned requirements, on-site landscape and
visual mitigation measures were audited by RLA in the reporting month.
7.4
According to Section 7.3.1.2 of
the EM&A Manual (AEIAR-174/2013), site audits shall be undertaken at least
once every two weeks throughout the construction period to monitor and audit
the timely implementation of landscape and visual mitigation measures within
the site boundaries of this Project.
7.5
The
broad scope of the audit is detailed below but should also be undertaken with reference
to the more specific checklist provided in Table 7.2. The summaries
of site audits are attached in Appendix
I:
·
The extent of the agreed works areas should be
regularly checked during the construction phase. Any trespass by the Contractor
outside the limit of the works, including any damage to existing trees and soft
landscape areas shall be prohibited;
·
the progress of the engineering works should be
regularly reviewed on site to identify the earliest practical opportunities for
the landscape works to be undertaken;
·
all existing trees and vegetation within the study
area which are not directly affected by the works are retained and protected;
·
the methods of protecting existing vegetation proposed
by the Contractor are
acceptable
and enforced;
·
preparation, lifting transport and re-planting
operations for any transplanted trees;
·
all landscaping works are carried out in accordance
with the specifications;
·
the planting of new trees, shrubs, groundcover,
climbers, ferns, grasses and other plans, together with the replanting of any
transplanted trees are carried out properly and within the right season; and
·
all necessary horticultural operations and
replacement planting are undertaken throughout the Establishment Period to ensure
the healthy establishment and
growth
of both transplanted trees and all newly established plants.
Table 7.2 Construction Phase Audit Checklist for Landscape and Visual Mitigation
Measures
|
Area of Works
|
Items to be Monitored
|
|
Advance planting
|
Monitoring of implementation and maintenance of planting, and
against possible incursion, physical damage, fire, pollution, surface
erosion, etc.
|
|
Protection of all trees
and existing soft landscape areas to be retained
|
Identification and demarcation
of trees / vegetation to be retained, erection of physical protection (e.g.
fencing), monitoring against possible incursion, physical damage, fire,
pollution, surface erosion, etc.
|
|
Clearance of existing
vegetation
|
Identification and
demarcation of trees / vegetation to be cleared, checking of extent of works
to minimise damage, monitoring of adjacent areas against possible incursion,
physical damage, fire, pollution, surface erosion, etc.
|
|
Pruning of trees
|
Identification and
demarcation of trees / vegetation to be pruned, monitoring of extent of
pruning to minimise damage, timing of operations, implementation of all
stages of preparatory and pruning works, and maintenance of pruned
vegetation, etc.
|
|
Plant supply
|
Monitoring of operations
relating to the supply of specialist plant material (including the
collecting, germination and growth of plants from seed) to ensure that plants
will be available in time to be used within the construction works.
|
|
Soiling, planting, etc.
|
Monitoring of
implementation and maintenance of soiling and planting works and against
possible incursion, physical damage, fire, pollution, surface erosion, etc.
|
|
Site fencing and
hoarding
|
Implementation and
maintenance, to ensure compliance with agreed designs and check that it matches
the surrounding environment and does not cause visual intrusion.
|
|
Architectural treatment
of engineering works.
|
Implementation and
maintenance of mitigation measures, to ensure compliance with agreed designs
as applicable.
|
|
Establishment Works
|
Monitoring of
implementation of maintenance operations during Establishment Period.
|
7.6
In the event of non-compliance
the responsibilities of the relevant parties is detailed in the Event / Action
plan attached in Appendix J.
7.7
In the reporting month, no non-compliance
of the landscape and visual mitigation measures was recorded by RLA.
8.1
According to Section 8.3.1.1 of
EM&A Manual (AEIAR-174/2013), as a precautionary measure, it is recommended that if any antiquity
or supposed antiquity is discovered during the course of the excavation works
undertaken by the Contractor, the discovery shall be reported to the AMO
immediately and all necessary measures taken to preserve it.
8.2
According to Section 8.3.1.2 of
EM&A
Manual (AEIAR-174/2013), no EM&A is required during the construction and operational
phase.
9.1
According to Section 9.3.1.1 of EM&A Manual (AEIAR-174/2013), the
effective management of waste arisings during the construction phase will be monitored
through the site audit programme. Regular audits and site inspections
should be carried out by the Engineer, ET and Contractor to ensure that the
recommended good site practices and other mitigation measures are implemented
by the Contractor. The summaries of site audits
are attached in Appendix I.
9.2
According to Sections 9.3.1.3
and 9.3.1.4 of
EM&A Manual (AEIAR-174/2013),
documents including licenses, permits, disposal and recycling records should be
reviewed and audited during site audits for the compliance with the legislation
and contract requirements to ensure proper records are being maintained and
procedures undertaken in accordance with the Waste Management Plan.
10.1
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.
10.2
Site audits were conducted on
02, 09, 16, 23 and 30 July 2020 in the reporting month. Site inspection of the
IEC was conducted on 16 July 2020. No non-compliance was observed during the
site audit.
10.3
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 K.
10.4
The ET weekly site inspections
were carried out during the reporting month and the observations and
recommendations are summarized in Table
10.1. Refer to Appendix I for
the site inspection summary reports in the reporting month.
Table
10.1 Observations and Recommendations
of Site Audit
|
Parameters
|
Date
|
Observations
and Recommendations
|
Follow-up
|
|
Air Quality
|
N/A
|
|
N/A
|
|
Noise
|
02 July 2020
|
|
The air compressors were removed.
|
|
Water Quality
|
23 June 2020
|
|
Bund wall has been provided to prevent untreated
surface runoff directly discharge into the water discharge point during heavy
rain.
|
|
|
Such accumulation
was cleaned.
|
|
16 July 2020
|
|
Two manholes were
sealed around by sandbags.
|
|
30 July 2020
|
|
To be followed up
in the next reporting period.
|
|
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
|
10.5
The Event and Action Plans for
air quality, construction noise, and landscape and visual are presented in Appendix J.
Air Quality Monitoring
·
No Action/Limit Level
exceedance for 24-hour TSP monitoring was recorded.
·
As one (1) air quality related
complaint was received in the last reporting month (June), the 1-hour TSP monitoring
was conducted on 23 July 2020. And no Action/Limit Level exceedance for 1-hour
TSP monitoring was recorded.
Construction Noise
Monitoring
·
One (1) documented complaint on
construction noise was received in the reporting month, therefore, one (1)
Action Level exceedance for construction noise was recorded.
·
No Limit Level exceedance for
construction noise monitoring was recorded in the reporting month.
Landscape and Visual
·
No landscape and visual
non-conformity was recorded.
10.6
According the Section 11.3.2.1
(c) of the EM&A Manual (AEIAR-174/2013), status of required submission
under EP-451/2013 and EP-458/2013/C during the reporting period are summarized
in Table 10.2.
Table
10.2 Status of Required Submission
under Environmental Permit
|
EP Condition
|
Submission
|
Submission Date
|
|
|
|
Condition 2.3
|
Management Organization of Main
Construction Companies
|
|
|
Condition 2.4
|
Design Drawing of the Project
|
|
|
Condition 2.5
|
Landscape Mitigation Plan(s)
|
|
|
Condition 2.10 (a)
|
Supplementary Contamination Assessment Plan
|
|
|
Condition 2.10 (b)
|
Supplementary Contamination Assessment
Report
|
|
|
Condition 3.3
|
Baseline Monitoring Report (at Kai Tak
Area)
|
|
|
Condition 3.3
|
Baseline Monitoring Report (at Cha Kwo Ling
Area)
|
|
|
Condition 3.4
|
Monthly EM&A Report (June 2020)
|
|
|
|
|
Condition 2.4
|
Management Organization of Main
Construction Companies
|
|
|
Condition 2.5
|
Noise Mitigation Plan
|
|
|
Condition 2.6
|
Waste Management Plan
|
|
|
Condition 2.7
|
Landscape Mitigation Plan
|
|
|
Condition 2.10
|
Construction Programme
|
|
|
Condition 4.3
|
Baseline Monitoring Report
|
|
|
Condition 4.4
|
Monthly EM&A Report (June 2020)
|
|
11.1
The summaries of environmental
complaint, warning, summon and notification of successful prosecution for the
Project is presented in Appendix L.
11.2
The summary of exceedance
record in the reporting month is shown in Appendix
M.
11.3
No non-conformity was recorded
for landscape and visual inspections conducted in the reporting month.
Tentative construction programmes for the
next three months are provided in Appendix
N.
12.1
Major site activities undertaken
for the coming months are summarized as follows:
·
132kV substation ELS and Structure Construction at
Portion M1
·
Pre-boring and Sheet Piling Works
·
Guide wall Construction and D-wall Construction
·
Pump Test and Dewatering Well
·
TAM Grouting Works
·
Existing Slab Breaking
12.2
Key environmental issues in the
coming months include:
·
Wheel washing bay at site exits;
·
Temporary noise barriers for PMEs;
·
Sedimentation tank for settling muddy water;
·
Make sure open stockpiles are covered during
rainstorm; and
·
Make sure bypass is provided in the drainage system
to prevent flooding during periods of heavy rain.
12.3
The tentative environmental
monitoring schedule for the next three months are shown in Appendix B.
13.1
This is the 5th
Monthly EM&A Report which presents the EM&A works undertaken during the
reporting month in accordance with the EM&A Manual (AEIAR-174/2013) and
the requirement under EP.
Air
Quality Monitoring
13.2
No Action/Limit Level exceedance was recorded for 24-hour TSP monitoring
in the reporting month.
13.3
No Action/Limit Level exceedance was recorded for 1-hour TSP monitoring
in the reporting month.
Construction
Noise Monitoring
13.4
No Limit Level exceedance was recorded for all noise monitoring in the
reporting month.
13.5
One (1) Action Level was recorded as one documented complaint was
received.
Site Audit
13.6
5 ET joint weekly environmental
site inspections were conducted in the reporting month.
Complaint, Notification of Summons and Successful Prosecution
13.7
One (1) environmental complaint
was received in the reporting month. No notifications of summons and successful
prosecutions were received in the reporting month.
Recommendations
13.8
According to the environmental
audit performed in the reporting month, the following recommendations were
made:
Noise
·
Only well-maintained plant
should be operated on-site and plants should be serviced regularly during the
construction period to minimize the generation of noise impact.
Water Quality
·
Surface runoff from the
construction site should be treated to meet the requirement prior to
discharge;
·
Conducting a regular
inspection, especially after heavy rain, in order to avoid accumulation of
water/ muddy water on site area or drip tray;
·
Manholes should always be
adequately covered and temporarily sealed so as to prevent silt, construction
materials or debris being washed into the drainage system.
