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Page
No. |
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EXECUTIVE SUMMARY |
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|
Introduction |
5 |
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Environmental
Monitoring and Audit Progress |
5 |
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|
Breaches
of Action and Limit Levels |
5 |
|
|
Air
Quality |
5 |
|
|
Construction
Noise |
5-6 |
|
|
Ecological
Monitoring |
6 |
|
|
Environmental
Non-Compliance |
6 |
|
|
Environmental
Complaint |
6 |
|
|
Notification
of Summons and Successful Prosecutions |
6 |
|
|
Reporting
Changes |
6 |
|
|
Future
Key Issues |
6-7 |
|
INTRODUCTION |
|
|
|
|
Purpose
of the report |
8 |
|
|
Structure
of the report |
8-9 |
|
2 |
PROJECT
INFORMATION |
|
|
|
Background |
10 |
|
|
Project
Organization |
10-11 |
|
|
Summary
of Construction Works Undertaken During Reporting Month |
11 |
|
|
Construction
Programme |
11 |
|
|
Status
of Environmental Licences, Notifications and
Permits |
11-12 |
|
|
Summary
of EM&A Requirement |
12 |
|
|
Status
of Compliance with Environmental Permits Conditions |
12-13 |
|
3 |
AIR
QUALITY MONITORING |
|
|
|
Monitoring
Requirements |
14 |
|
|
Monitoring
Location |
14 |
|
|
Monitoring
Equipment |
14-15 |
|
|
Monitoring
Parameters, Frequency and Duration |
15 |
|
|
Monitoring
Methodology and QA/QC Procedure |
15-16 |
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|
Results
and Observations |
16 |
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|
Event
and Action Plan |
17 |
|
4 |
NOISE
MONITORING |
|
|
|
Monitoring
Requirements |
18 |
|
|
Monitoring
Location |
18 |
|
|
Monitoring
Equipment |
18 |
|
|
Monitoring
Parameters, Frequency and Duration |
19 |
|
|
Monitoring
Methodology and QA/QC Procedures |
19-20 |
|
|
Maintenance
and Calibration |
20 |
|
|
Results
and Observations |
20-21 |
|
|
Event
and Action Plan |
21 |
|
|
|
|
|
5 |
ECOLOGICAL
MONITORING |
|
|
|
Monitoring
of Flora Species of Conservation Interest |
22 |
|
|
Post-Transplantation
Monitoring and Maintenance Programme |
22-23 |
|
|
Results
and Observations |
23-26 |
|
|
Precautionary
Measure for Butterfly Species of Conservation Interest |
26 |
|
|
Precautionary
Measures to Minimize Indirect Disturbance on Ecology |
26 |
|
6 |
LANDSCAPE
AND VISUAL MONITORING |
|
|
|
Monitoring
Requirements |
27 |
|
7 |
ENVIRONMENTAL
SITE INSPECTION |
|
|
|
Site
Audits |
28 |
|
|
Implementation
Status of Environmental Mitigation Measures |
29 |
|
|
Solid
and Liquid Waste Management Status |
29 |
|
8 |
ENVIRONMENTAL
NON-CONFORMANCE |
|
|
|
Summary
of Exceedances |
30 |
|
|
Summary
of Environmental Non-Compliance |
30 |
|
|
Summary
of Environmental Complaint |
30 |
|
|
Summary
of Environmental Summon and Successful Prosecution |
30 |
|
9 |
FUTURE
KEY ISSUES |
|
|
|
Key
Issues in the Coming Three Months |
31-32 |
|
|
Monitoring
Schedule for the Next Month |
32 |
|
10 |
CONCLUSIONS
AND RECOMMENDATIONS |
|
|
|
Conclusions |
33 |
|
|
Recommendations |
33-34 |
LIST OF TABLES
Table I Summary
Table for EM&A Activities in the Reporting Month
Table II Summary
Table for Events Recorded in the Reporting Month
Table 2.1 Key
Contacts of the Project
Table 2.2 Status
of Environmental Licences, Notifications and Permits (Contract No. SSK509)
Table 2.3 Summary
Table for Status of Compliance / Required Submission
Table 3.1 Location
for Air Quality Monitoring Locations
Table 3.2 Air
Quality Monitoring Equipment
Table 3.3 Impact
Dust Monitoring Parameters, Frequency and Duration
Table 3.4 Summary
Table of 1-hour TSP Monitoring Results during the Reporting Month
Table 3.5 Observation
at Dust Monitoring Stations
Table 4.1 Location
for Noise Monitoring Stations
Table 4.2 Noise
Monitoring Equipment
Table 4.3 Noise
Monitoring Parameters, Duration and Frequency
Table 4.4 Summary
Table of Noise Monitoring Results during the Reporting Month
Table 4.5 Observation
at Noise Monitoring Stations
Table 5.1 Implementation
Status of Protection Measures for Flora Species of Conservation Interest
Table 7.1 Observations
and Recommendations of Site Audit
LIST OF FIGURES
Figure 1 Site
Layout Plan
Figure 2 Location
of Air Quality Monitoring Stations
Figure 3 Location
of Noise Monitoring Stations
LIST OF APPENDICES
Appendix A Construction
Programme and Proactive Environmental Protection Proforma
Appendix B Action
and Limit Levels
Appendix C Copies
of Calibration Certificates
Appendix D Environmental
Monitoring Schedules
Appendix E Air
Quality Monitoring Results and Graphical Presentation
Appendix F Noise
Monitoring Results and Graphical Presentation
Appendix G Weather
Condition
Appendix H Ecological
Monitoring Records
Appendix I Event
Action Plans
Appendix J Summary
of Exceedance
Appendix K Environmental
Mitigation Implementation Schedule (EMIS)
Appendix L Waste
Generation in the Reporting Month
Appendix M Complaint
Log
Appendix N Summary
of Successful Prosecution
Appendix O The
potential seriousness of the forthcoming environmental impacts and the use of
machineries
Appendix P A
List of Machineries Used in Construction Site
EXECUTIVE SUMMARY
Introduction
1.
This is
the 10th monthly Environmental Monitoring and Audit (EM&A) Report for the
Project of Police Facilities in Kong Nga Po under Environmental Permit No. FEP-01/510/2016.
This report was prepared by Ka Shing Management Consultancy Ltd. (Ka Shing)
under “Service Contract Quotation No. PMB202/8480/2022/A01/A Provision of
Environmental Team consultancy for Design and Construction of Kong Nga Po
Police Training Facilities” (hereinafter called the “Service Contract”). This
report documents the findings of Environmental Monitoring and Audit (EM&A)
work conducted from 1st to 31st January 2024.
2.
Part
of the construction site was handed over to Architectural Services Department
(ArchSD) on 23rd December 2022 whom taken over responsibility for the
construction of building works and as maintenance agent for Hong Kong Police
Force (HKPF) during operation phase.
3.
During
the reporting month, the following Works Contracts were undertaken for the
Project of Police Facilities in Kong Nga Po under Environmental Permit No. FEP-01/510/2016:
Contract No. SSK509 - Design and Construction of Kong Nga Po Police Training
Facilities
Environmental Monitoring and Audit Progress
4.
A
summary of the EM&A activities in this reporting month is listed in Table
I below:
Table I
Summary Table for EM&A Activities in the Reporting Month
|
EM&A Activities |
Date |
|
Air Quality Monitoring |
03, 09, 15, 19, 24, 30 January 2024 |
|
Noise Monitoring |
03, 09, 15, 24, 30 January 2024 |
|
Ecological Monitoring |
30, 31 January 2024 |
|
Environmental Site Inspection |
02, 09, 16, 24, 30 January 2024 |
|
Landscape & Visual Inspection |
02, 16, 30 January 2024 |
Breaches of Action and Limit Levels
5. Summary
of the environmental exceedances of the reporting month is tabulated in Table
II.
Air Quality
6. All
construction air quality monitoring was conducted as scheduled in the reporting
month. No Action/Limit Level
exceedance was recorded.
Construction Noise
7. All
construction noise monitoring was conducted as scheduled in the reporting
month. No Action/Limit Level
exceedance was recorded.
Table II Summary Table for Events
Recorded in the Reporting Month
|
Environmental Monitoring |
Parameter |
No. of Non-Project related Exceedances |
No. of Exceedance related to the
Construction Works of the Contract |
Action Taken |
||
|
Action Level |
Limit Level |
Action Level |
Limit Level |
|||
|
Air Quality |
1-hr TSP |
0 |
0 |
0 |
0 |
N/A |
|
Noise |
Leq(30min) |
0 |
0 |
0 |
0 |
N/A |
Ecological Monitoring
8. All
ecological monitoring was conducted as scheduled in the reporting month. The
ecological monitoring
result in the reporting month is shown in Appendix H.
Environmental Non-Compliance
9. No
environmental non-compliance was recorded in the reporting month
Environmental Complaint
10. No
environmental complaint was received in the reporting month. The Complaint Log
is presented in Appendix M.
Notification of Summons and Successful
Prosecutions
11. No
notification of summons or successful prosecutions was received in the
reporting month.
Reporting Changes
12. A portion of the construction site
was transferred to the Architectural Services Department (ArchSD) on December
23rd 2022. ArchSD assumes responsibility for the construction of the building
works. The site activities and implementation status of environmental
mitigation measures related to ArchSD Contract are presented in this Monthly
EM&A Report.
Future Key Issues
13. The
major site activities for the coming three months include:
- Open cut excavation
- Removal of soil
- Construction of footings
- Construction of pile cap
- Mock up construction
- U.U. Lead in and Pipe Duct Connection
14. Potential
environmental impacts arising from the above construction activities are mainly
associated with construction
dust, noise, water quality and waste management. For the details, please refer to Appendix A
regarding the anticipated major impacts from the construction works and corresponding recommended mitigation
measures.
1
INTRODUCTION
1.1 Ka Shing Management Consultancy Ltd. (Ka
Shing) was commissioned by the Architectural Services Department (ASD) as the
Environmental Team to undertake the Environmental Monitoring and Audit
(EM&A) works for the Project of Police Facilities in Kong Nga Po under
Environmental Permit No. FEP-01/510/2016 to ensure that the environmental
performance of the Works Contracts comply with the requirements specified in
the Environmental Permits (EPs), Environmental Impact Assessment (EIA) Report
and Environmental Monitoring & Audit (EM&A) Manual of the Police
Facilities in Kong Nga Po Project and other relevant statutory requirements.
1.2 The major construction works for the
Project commenced on 3rd July 2020 and the main site in Kong Nga Po was handed
over to Architectural Services Department (ASD) on 23rd December 2022 whom
taken over responsibility for the construction of building works and as
maintenance agent for Hong Kong Police Force (HKPF) during operation phase.
Purpose of the report
Structure
of the report
1.4 The structure of the report is as
follows:
Section 1: Introduction - purpose and structure of the
report.
Section
2: Project Information – summarises
background and scope of the Project, site description, project organization and
contact details, construction programme, the construction works undertaken and
the status of Environmental Permits/Licences during the reporting month.
Section 3: Air Quality Monitoring – summarises the
monitoring parameters, monitoring
programmes,
monitoring methodologies, monitoring frequencies, monitoring locations, Action
and Limit Levels, monitoring results and Event /Action Plans.
Section
4: Noise Monitoring – summarises the
monitoring parameters, monitoring programmes, monitoring methodologies,
monitoring frequencies, monitoring locations, Action and Limit Levels,
monitoring results and Event/Action Plans.
Section
5: Ecological Monitoring – summarises the
monitoring results of the monthly ecological monitoring undertaken within the
reporting month.
Section
6: Landscape and Visual Monitoring –
summarises the audit results of the site inspection undertaken within the
reporting month.
Section
7: Environmental Site Inspection –
summarises the audit findings of the weekly site inspections undertaken within
the reporting month.
Section
8: Environmental Non-conformance –
summarises any monitoring exceedance, environmental complaints, environmental
summons and successful prosecutions within the reporting month.
Section
9: Future Key Issues – summarises the
impact forecast for the next three months and monitoring schedule in the next
month.
Section 10:
Conclusions and Recommendations
2 PROJECT
INFORMATION
Background
2.1 The Project mainly includes
construction and operation of various police facilities. The police
facilities include:
(i)
a helipad;
(ii) two
firing ranges; and
(iii) other
facilities, associated infrastructure & utilities, etc.
2.2 The Project is a Designated Project under
the Environmental Impact Assessment Ordinance (EIAO). An Environmental Impact
Assessment (EIA) Report (Report No.: AEIAR-201/2016) for the Project was
approved under EIAO in October 2016 in accordance with the EIA Study Brief (No.
ESB-276/2014) and the Technical Memorandum on Environmental Impact Assessment
Process (EIAO-TM). The corresponding Environmental Permit was issued (EP no.: FEP-01/510/2016)
by the Director of Environmental Protection (DEP).
2.3 According to an approved
Environmental Monitoring and Audit (EM&A) Manual, an air quality and noise
monitoring programme is recommended during the construction phases of the
Project to monitor the expected dust and noise nuisances. Baseline air quality
and noise monitoring were conducted by previous ET (Wellab Limited) from 14th
March 2020 to 2nd April 2020 to establish the background conditions of the
designated sensitive receivers prior to the commencement of the Project’s
construction works.
2.4 The
site layout plan for the Project is shown in Figure 1.
Project Organization
2.5 Different parties with different
levels of involvement in the Project organization under EP no.: FEP-01/510/2016
include:
Project Proponent
– Architectural Services Department (ArchSD)
Contractor– China
State JV
Environmental
Team (ET) – Ka Shing Management Consultancy Ltd.
Independent
Environmental Checker (IEC) – Acuity Sustainability Consulting Limited
2.6 The key personnel contact names and
numbers under Quotation No. PMB202/8480/2022/A01/A and the other contact names
and numbers under ArchSD Contract No. SSK509 are summarised in Table 2.1.
Table 2.1 Key
Contacts of the Project
|
Party |
Role |
Contact Person |
Phone No. |
Fax No. |
|
Architectural Services Department |
Project Proponent |
Mr. Vincent Kwok |
2867 3939 |
3542 5223 |
|
Contractor (China State JV) |
Site Agent |
Mr. Kelvin Chan |
6272 8828 |
2866 6325 |
|
Environmental Officer |
Ms. Marian Kong |
6174 9735 |
||
|
Mr. LuLu Mar |
5998 8852 |
|||
|
Ka Shing Management Consultancy Ltd. |
ETL |
Mr. W.H. Lee |
2618 2166 |
2120 7752 |
|
Acuity Sustainability Consulting Limited |
IEC |
Ir. Y.H. Law |
2698 6833 |
2698 9383 |
Summary of Construction Works Undertaken
During Reporting Month
2.7 The
major site activities undertaken in the reporting month included:
- Open cut excavation
- Removal of soil
- Construction of footings
- Mock-up construction
- Plate load test
Construction Programme
2.8 A
copy of the Contractors' construction programmes is provided in Appendix A.
We have considered the major site activities for the upcoming three months as
provided by the Contractor. The potential severity of the forthcoming
environmental impacts and the use of machinery are recognized and detailed in Appendix
O. This appendix also provides the Contractor with advice and
considerations regarding possible alternative methods aimed at environmental
improvement, awareness, and enhancement matters on site.
2.9 A summary of the relevant permits,
licences, and/or notifications on environmental protection for this Project is
presented in Table 2.2
Table 2.2 Status
of Environmental Licences, Notifications and Permits
|
Permit /
Licence No. |
Valid Period |
Status |
|
|
From |
To |
||
|
Further
Environmental Permit (FEP) |
|||
|
FEP-01/510/2016 |
N/A |
N/A |
Valid |
|
Construction
Noise Permit (CNP) |
|||
|
GW-RN1337-23 |
20-12-2023
|
19-03-2024
|
Valid |
|
Notification
pursuant to Air Pollution Control (Construction Dust) Regulation |
|||
|
EPD Ref no.: 487864 |
N/A |
N/A |
N/A |
|
Billing
Account for Construction Waste Disposal |
|||
|
Account No.
7046289 |
18-01-2023 |
N/A |
Valid |
|
Registration
of Chemical Waste Producer |
|||
|
WPN5213-641-C4770-01 |
18-01-2023 |
N/A |
Valid |
|
Effluent
Discharge Licence under Water Pollution Control Ordinance |
|||
|
WT00043663-2023 |
21-04-2023 |
30-04-2028 |
Valid |
Summary of EM&A Requirement
2.10 The EM&A programme requires construction
noise monitoring, air quality monitoring, ecological monitoring and
environmental site audits. The EM&A requirements are described in the
following sections, including:
l All monitoring parameters;
l Action and Limit levels for all
environmental parameters;
l Event / Action Plans;
l Environmental mitigation measures, as
recommended in the Project EIA study final report; and
l Environmental requirements in contract
documents.
Status of Compliance with Environmental
Permits Conditions
2.11 The status of compliance with Environmental
Permit (EP) No. FEP-01/510/2016 and required submission related to this Project
under the EP is summarized in Table 2.3:
Table 2.3 Summary
Table for Status of Compliance / Required Submission under FEP No. FEP-01/510/2016
|
EP Conditions |
Submission |
Submission Date |
Approval Status |
|
1.12 |
Commencement
date of construction of
the Project |
30/3/2023 |
* |
|
2.7 |
Proposal on the
Reporting Mechanism and Curriculum Vitae of the IEC |
20/3/2023 |
* |
|
2.10 |
The date of
setting up the Community Liaison Hotline and the contact details |
27/2/2023 |
* |
|
2.11 |
Management
Organization of Main
Construction Companies, at
least an organization chart, names of responsible
persons and their contact
details |
10/3/2023 |
* |
|
2.12 |
Construction
Works Schedule and Location Plans |
10/3/2023 |
* |
|
2.13 |
Layout plan for permeable
pavings |
29/3/2023 |
For approval |
|
2.14 |
Landscape and
visual mitigation plan |
26/6/2023 |
For approval |
|
2.16 |
Plan for perimeter
walls/ boundary wall sat project site and sidewalls of firing range |
1 month before fence wall works |
For approval |
|
2.19 |
Submission of
Helicopter Flight Plan |
1 month before commencement of operation of Helipad |
Notification |
|
3.3 |
Baseline Air
Quality and Noise Monitoring Report |
30/3/2023 |
Deposit |
|
4.2 |
Internet address
of a dedicated web site |
13/4/2023 |
* |
Remarks:
* Approval not required in FEP-01/510/2016
3 AIR
QUALITY MONITORING
Monitoring Requirements
3.1 In accordance with the EM&A
Manual, impact 1-hour TSP monitoring was conducted to monitor the air quality
for the Works Contracts. Appendix B shows the established Action/Limit
Levels for the air quality monitoring works.
3.2
Impact 1-hour TSP monitoring was
conducted for at least three times every 6 day at one air quality monitoring
station.
Monitoring Location
3.3 According to Section 2.2.5 of the
EM&A Manual, impact air quality monitoring was conducted at the two
designated monitoring stations for the Project as shown in Figure 2. Table 3.1
describes the location of the air quality monitoring stations.
Table 3.1 Location for Air
Quality Monitoring Stations
|
Monitoring Station |
Location of Measurement |
|
AM1 |
Village House, Kong Nga Po |
|
AM2 |
Village House, Kong Nga Po |
Monitoring Equipment
3.4 As the setup of HVS for 1-hour TSP
monitoring at the designated locations and request for secured supply of
electricity for HVS were not allowed by the villager, direct reading dust
meters was therefore used to carry out the 1-hour TSP monitoring. Dust meter
has been commonly used for measuring 1-hour TSP levels in a number of
designated projects of major infrastructure works. The proposed use of direct
reading dust meter was submitted to IEC and agreed by the IEC. With the use of
direct reading dust meter, it can allow prompt and direct results for the
EM&A reporting and the implementation of the event and action plan. The
1-hour sampling was determined on bi-monthly basis by the HVS to check the
validity and accuracy of the results measured by direct reading method.
3.5 Table 3.2 summarises the
equipment used in the impact air quality monitoring programme. Copies of
calibration certificates are attached in Appendix C.
Table 3.2 Air Quality
Monitoring Equipment
|
Equipment |
Model and Make |
Quantity |
|
Dust Monitor |
SIBATA (LD-3B) |
2 |
3.6 Meteorological
information was extracted from “Hong Kong Observatory - General Weather
Conditions during the Monitoring Period (January 2024)” in Appendix G as
the alternative method to obtain representative wind data.
3.7 The weather conditions (i.e. sunny, cloudy or
rainy) were recorded by the field staff as well during the monitoring days.
Monitoring Parameters, Frequency and Duration
3.8 Table
3.3 summarises the monitoring parameters and frequencies of impact dust
monitoring during the Works Contracts activities. The air quality monitoring
schedule for the reporting month is shown in Appendix D.
Table 3.3 Impact
Dust Monitoring Parameters, Frequency and Duration
|
Parameters |
Frequency |
|
1-hr TSP |
Three times/ 6 days |
Monitoring
Methodology and QA/QC Procedure
1-hour
TSP Air Quality Monitoring
Instrumentation
3.9 Direct reading dust meter was
deployed for the air quality monitoring as shown in
Table 3.2.
3.10 The measuring procedures of the dust meter are
in accordance with the Manufacturer’s Instruction Manual as follows:
l When
the Model LD-3B is turned on, the set time displayed at the bottom left of the
liquid crystal display is [01 min].
l When the start/stop switch is pressed once
at this time, a measurement of 1minute is taken. The length of the measurement
will depend on the time that is set and displayed.
l A down timer is displayed at the bottom
right of the liquid crystal display
Maintenance/Calibration
3.11 The following
maintenance/calibration was required for the direct dust meters:
l
Check
and calibrate the dust meter by High Volume Sampler (HVS) to check the validity
and accuracy of the results measured by direct reading method. Calibration of
dust meter should be carried out on a bi-monthly basis throughout all stages of
the air quality monitoring.
l
The
correlation of dust meter and HVS in TSP measurement was obtained by direct
comparison of the weight of dust particle trapped in a filter paper using HVS
with the reading of the dust meter. Calibration of the dust meter with HVS
should be powered on and off at the same location and the same time.
l
The
correlation coefficient was checked to establish the correlation relationship
between the dust meter and HVS. The correlation factor was determined by
comparing the results of HVS and dust meter.
l
Checking
is made prior to dust monitoring commencing to ensure all equipment is in good
working condition with necessary power supply. Zero count test were conducted
before and after each monitoring event.
Results and
Observations
3.12 The monitoring results
for 1-hour TSP monitoring are summarised in Table 3.4. Detailed
monitoring results and graphical presentations of 1-hour TSP monitoring results
are shown in Appendix E.
Table 3.4
Summary Table of 1-hour TSP Monitoring Results during the Reporting
Month
|
Monitoring Station |
Concentration |
Action Level, μg/m3 |
Limit Level, μg/m3 |
|
|
(μg/m3) |
||||
|
Average |
Range |
|||
|
AM1 |
75 |
53 – 106 |
308 |
500 |
|
AM2 |
88 |
64 – 104 |
311 |
|
3.13 1-hour TSP monitoring
was conducted as scheduled in the reporting month. No Action/Limit Level
exceedances were recorded.
3.14 According
to our field observations, the major dust source identified at the designated
air quality monitoring stations in the reporting month are shown in Table
3.5
Table 3.5 Observation at Dust
Monitoring Stations
|
Monitoring Station |
Major Dust Source |
|
AM1 |
Road traffic, exposed site area, site vehicle /
equipment operation and movement |
|
AM2 |
Road traffic, exposed site area, site vehicle /
equipment operation and movement, vehicle / equipment operation and movement
at warehouse nearby |
Event and Action
Plan
3.15 Should
project-related non-compliance of the criteria occur, action in accordance with
the Event Action Plan in Appendix I shall be carried out.
4 NOISE
MONITORING
Monitoring Requirements
4.1 In
accordance with EM&A Manual, construction noise monitoring was conducted in
terms of the A-weighted equivalent continuous sound pressure level (Leq) 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 one set of measurements between 0700 and 1900 hours on normal
weekdays shall be conducted. Appendix B
shows the established Action/Limit Levels for the environmental monitoring
works.
Monitoring Location
4.2 According to Section 3.2.3 of the
EM&A Manual, impact noise monitoring was conducted at fourteen designated
noise monitoring stations. With reference to the principle of EIA report of the
Project, noise monitoring station within 300 m from the boundary of this
Project are considered. In such regard, six noise monitoring stations as shown in Figure 3 as relevant monitoring
locations. Table 4.1 describes the locations of the noise monitoring stations.
Table 4.1
Location of Noise Monitoring Stations
|
Monitoring Station |
Location of Measurement |
|
NM9 |
Village House, Kong Nga Po |
|
NM10 |
Village House, Kong Nga Po |
|
NM11 |
Village House, Kong Nga Po |
|
NM12 |
Village House, Kong Nga Po |
|
NM13 |
Village House, Kong Nga Po |
|
NM14 |
Village House, near Man Kam To Road |
Monitoring
Equipment
4.3 Integrating Sound Level Meters were
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
4.2 summarises the noise monitoring equipment being used. Copies of
calibration certificates are attached in Appendix C.
Table 4.2 Noise Monitoring Equipment
|
Equipment |
Model |
Quantity |
|
Sound Level Meter |
RION NL-52 |
1 |
|
Sound Calibrator |
Castle GA607 |
1 |
Monitoring
Parameters, Frequency and Duration
4.4 Table
4.3 summarises the monitoring parameters, frequency and total duration of
monitoring. The noise monitoring
schedule is shown in Appendix D.
Table 4.3 Noise Monitoring Parameters, Duration and
Frequency
|
Monitoring Stations |
Parameter |
Duration |
Frequency |
Measurement |
|
NM9 |
L10(30 min.) dB(A)[2] |
0700-1900 hrs on normal weekdays |
Once per week |
Free field[1] |
|
NM10 |
Free field[1] |
|||
|
NM11 |
Façade |
|||
|
NM12 |
Façade |
|||
|
NM13 |
Free field[1] |
|||
|
NM14 |
Free field[1] |
Remarks:
[1]: Correction of +3dB (A) for Free-field
Measurement.
[2]: A-weighted equivalent continuous sound
pressure level (Leq). It is the constant noise level which, under a given
situation and time period, contains the same acoustic energy as the actual
time-varying noise level.
L10 is the level exceeded for 10% of the
time. For 10% of the time, the sound or noise has a sound pressure level above
L10.
L90 is the level exceeded for 90% of the
time. For 90% of the time, the noise level is above this level.
Monitoring
Methodology and QA/QC Procedures
4.5 The
monitoring procedures are as follows:
l
The
sound level meter was set on a tripod at a point 1m from the exterior of the
noise sensitive facade and at the position of 1.2m above the ground;
l
For
free field measurement, the meter was positioned away from any nearby
reflective surfaces. Free field noise levels were adjusted with a correction of
+3 dB(A);
l
The
battery condition was checked to ensure the correct functioning of the meter;
l
Parameters
such as frequency weighting, the time weighting and the measurement time were
set as follows:
—
frequency weighting
: A
—
time weighting
: Fast
—
time measurement
: Leq(30 min.) dB(A)
(as six consecutive
Leq, 5min readings) during non-restricted hours (i.e. 0700-1900 hrs on normal
weekdays)
l
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;
l
During
the monitoring period, the Leq, L90 and L10 were recorded. In addition, site
conditions and noise sources were recorded on a standard record sheet;
l
Noise
measurement was paused temporarily during periods of high intrusive noise (e.g.
dog barking, helicopter noise) if possible and observation record during
measurement period should be provided; and
l
Noise
monitoring was 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. The wind speed
should be checked with a portable wind speed meter capable of measuring the
wind speed in m/s.
Maintenance and
Calibration
4.6 The microphone head of the sound
level meter and calibrator were cleaned with a soft cloth at quarterly
intervals.
4.7 The sound level meter and
calibrator were checked and calibrated at yearly intervals.
4.8 Immediately prior to and following
each noise measurement, the accuracy of the sound level meter should be checked
using an acoustic calibrator generating a known sound pressure level at a known
frequency. Measurements would be accepted as valid only if the calibration
levels before and after the noise measurement agreed to within 1.0 dB.
Results and
Observations
4.9 The noise monitoring results are
summarised in Table 4.4. Detailed monitoring results and graphical
presentations of noise monitoring are shown in Appendix F. The weather information for the reporting month is
summarised in Appendix G.
Table 4.4
Summary Table of Noise Monitoring Results during the Reporting Month
|
Monitoring Station |
Average |
Range |
Baseline Level |
Limit Level |
|
Leq (30 min) dB(A) |
Leq (30 min) dB(A) |
dB(A) |
dB(A) |
|
|
NM9[1] |
56.6 |
49.0 – 64.7 |
55.9 |
75 |
|
NM10[1] |
52.7 |
45.4 – 57.2 |
52.8 |
|
|
NM11 |
46.6 |
39.9 – 63.0 |
46.4 |
|
|
NM12 |
44.0 |
39.4 – 47.3 |
54.7 |
|
|
NM13[1] |
52.5 |
46.1 – 62.0 |
61.3 |
|
|
NM14[1] |
44.1 |
40.1 – 51.4 |
59.6 |
Remarks:
[1]: Correction of +3dB (A) for Free-field
Measurement.
4.10 Construction noise
monitoring was conducted as scheduled in the reporting month. No Action/Limit
Level exceedance was recorded. The summary of exceedance record in reporting
month is shown in Appendix J.
4.11 According to our field observations,
the major noise sources identified at the designated noise monitoring stations
in the reporting month are as follows:
Table 4.5 Observation at Noise Monitoring Stations
|
Monitoring Station |
Major Noise Source |
|
NM9 |
Road traffic, excavation works, loading &
unloading |
|
NM10 |
Road traffic, excavation works, loading &
unloading |
|
NM11 |
Road traffic |
|
NM12 |
Road traffic, loading & unloading |
|
NM13 |
Road traffic, loading & unloading |
|
NM14 |
Road traffic, dog barking |
Event and Action
Plan
4.12 Should any project related
to non-compliance of the criteria occur, action in accordance with the Event
Action Plan in Appendix I shall be carried out.
5 ECOLOGICAL
MONITORING
Monitoring of
Flora Species of Conservation Interest
5.1 As required
under Section 8.3.2 of EM&A Manual, during construction phase, temporary
protective fence shall be erected enclosing the flora species of conservation
interest identified under the detailed vegetation survey. The temporary
protective fence shall be properly maintained and monitored for the
effectiveness. Monthly monitoring of individual of flora species of
conservation interest identified in the detailed vegetation survey shall be
conducted during the construction phase to make sure that the flora species of
conservation interest are not affected by the construction activities of the
Project.
5.2 The
purpose of the monitoring is to monitor the timely implementation of proper
environmental management practices and mitigation measures for the retained and
transplanted individuals of flora species of conservation interest. Proper
erection and maintenance of the temporary protective fence enclosing the
individuals was inspected for the effectiveness. The recommended protection
measures in the implementation schedule as stated in approved transplantation
proposal were monitored and the conditions of the individuals of flora species
of conservation interest were recorded as shown in Table 5.1.
5.3 According
to the approved detailed vegetation survey report and transplantation proposal,
71 individuals of Brainea insignis, 41 individuals of Spiranthes
sinensis and 3 individuals of Aquilaria sinensis were identified to be
transplanted to the receptor site. 51 individuals of Keteleeria fortunei,
26 undersized seedlings of Keteleeria fortunei and 7 undersized
seedlings of Aquilaria sinensis were identified to be retained along Kong Nga
Po Road near Police Dog Unit and Force Search Unit Training School.
Post-Transplantation
Monitoring and Maintenance Programme
5.4 According
to approved transplantation proposal, post-transplantation monitoring should be
conducted by the Contractor once per week in the first three months and once
per month afterwards during the 12-month establishment period and the
post-establishment period until the end of construction phase of the Project.
Regular monitoring allows early detection of the growth status of transplanted
species, sign of construction activity within and nearby the receptor site, and
any environmental change of the receptor site.
5.5 Maintenance
works were recommended for the first year of establishment to allow healthy
growth of the transplanted species. In view of the condition of transplanted
individuals after the 12-month establishment period, maintenance works were
recommended to extend during the Post-establishment Period until the end of
Construction Phase. Watering was recommended in daily practice during the first
three months after the transplantation and during the dry season. Daily watering
frequency is needed to keep the soil moist. Other maintenance works like the
use of mulch and weeding shall be conducted if required.
Results and
Observations
5.6 Monthly
monitoring of flora species of conservation interest was conducted by the
Contractor on 31st January 2024 during the reporting month. The implementation
status of protection measures as stated in the approved transplantation
proposal and the maintenance of temporary protective fence were inspected. The
implementation status of protection measures is shown in Table 5.1 and
photographic record and checklists for monthly monitoring are shown in Appendix
H. The health conditions of the transplanted / retained species are
generally in fair and poor condition. The Contractor was reminded to closely monitor
the transplanted species and implement the protection measures according to the
approved transplantation proposal to protect the transplanted / retained
species. In addition, the Contractor was also advised of the following:
1)
To
arrange the new tags for those Brainea insignis with missing tags;
2)
To
replace the faded plant labels identified in the receptor site.
3)
To
refer to the guidelines on soil improvement issued by the Greening, Landscape
and Tree Management Section (GLTMS) of the development bureau (2022) to apply
to monitoring and maintenance of transplanted flora species.
4)
To install
shaded nets
5)
Daily
watering frequency is needed to keep the soil moist.
Transplanted Brainea
insignis and Spiranthes sinensis
5.7 71
individuals of Brainea insignis and 41 individuals of Spiranthes
sinensis were transplanted to receptor site from 21st to 27th May 2020. Transplantation
Report recording the process of transplantation has been submitted to
ET(Wellab), IEC(Acuity) and the Supervisor (AECOM) for review and record. Post-transplantation
monitoring was conducted once per week in the first three months (June to
August 2020) and once per month during the 12-month establishment period and
the post-establishment period until the end of construction phase of the
Project. The health condition of the transplanted species was monitored by the
Contractor. The Contractor provided maintenance works including watering, use
of mulch and weeding in the first year of establishment to allow health growth
of the transplanted species. Post-transplantation monitoring on transplanted Brainea
insignis and Spiranthes sinensis was conducted on 25th November 2023
during the reporting month and the post-transplantation monitoring record is
shown in Appendix H. The health condition of the transplanted Brainea
insignis affected by bushfire on 2nd February 2021 was closely monitored
and reported in the post-transplantation monitoring records. The health
conditions of the retained species are generally in fair condition. The
Contractor was reminded to closely monitor the retained species and implemented
the protection measures to protect the retained species.
5.8 During monthly monitoring, no
construction activity and equipment storage was observed within the receptor
site. Temporary protective fence was properly erected and maintained for the
transplanted species.
Table 5.1 Implementation Status of Protection
Measures for Flora Species of Conservation Interest
|
Recommended
Mitigation Measures |
Implementation
Status |
|
Brainea insignis |
|
|
Identification
of Plant Species of Conservation Importance to be Retained / Transplanted |
^ |
|
To mark
trees/plants proposed to be retained and to be transplanted on the layout
plan prior to commencement of site construction works. |
|
|
Protection of
Plant Species of Conservation Importance prior to Site Clearance /
Transplantation Works |
|
|
a)
No site clearance shall be started at the locations of flora species of
conservation interest until the transplantation works completed. |
N/A |
|
b)
Set up buffer zone to enhance the protection of flora species of
conservation importance to be preserved / transplanted including the proposed
location for transplantation when the site clearance works shall commence
before the transplantation works completed. |
N/A |
|
Temporary
Protective Fence for Flora Species of Conservation Interest / Retained Tree |
|
|
a)
To erect a temporary protective fence enclosing the flora species of
conservation interest identified under the detailed vegetation survey. |
^ |
|
b)
To set up a protection zone at least 1m from the plant / retained tree and
erect robust, bright-coloured fencing of 1.5m in height. |
^ |
|
Maintenance
of the Protection Zone for Flora Species of Conservation Interest / Retained
Tree |
|
|
a)
Monthly monitoring of flora species of conservation interest identified in
the detailed vegetation survey should be conducted. |
^ |
|
b)
To inspect the temporary protective fence whether it is properly erected and
maintained during construction. |
^ |
|
Post-transplantation
Monitoring |
|
|
a)
Weekly post-transplantation monitoring of transplanted species in the first
three months and monthly afterwards. |
^ |
|
Maintenance
of Transplanted Species |
|
|
a)
To keep the soil moist by watering the receptor sites properly and
adequately. |
^ |
|
b)
To apply mulches on the soil surface over the plant root system, if required. |
^ |
|
c)
To remove unwanted weeds found in receptor sites. |
^ |
|
Other
Protection Measures for Flora Species of Conservation Interest / Retained
Tree / Vegetated Areas |
|
|
a)
All works should be confined within the site boundary. |
^ |
|
b)
Access of site staff should be controlled. |
^ |
|
c)
Care should be taken to prevent trees/plants being damaged by mechanical
equipment or stockpile both during site clearance works and construction
works. |
^ |
|
d)
No fixings should be driven into trees/plants. |
^ |
|
e)
No workshop, canteens, or similar should be installed beneath trees/plants,
nor will equipment maintenance etc. be carried out under trees/plants. |
^ |
|
f)
No excavation, including that for services or changes in ground level will
take place within the spread of the crown of the trees / plants. |
^ |
|
g)
No soil, debris or construction materials should be deposited around and
against the trunk of a tree/plant as this causes bark damage and compaction
of the soil. |
^ |
|
h)
No fire should be lit below the branches and no petrol, oil or caustic
substances stored near the trees/plants. |
^ |
|
i)
No trees/plants should be used for anchoring or winching purposes or for the
display of signs. |
^ |
|
j)
Any damage or injury to the retained / transplanted plants should be reported
as soon as possible for repair immediately. |
^ |
|
Spiranthes sinensis |
|
|
Identification
of Plant Species of Conservation Importance to be Retained / Transplanted |
|
|
To mark
trees/plants proposed to be retained and to be transplanted on the layout
plan prior to commencement of site construction works. |
^ |
|
Protection of
Plant Species of Conservation Importance prior to Site Clearance /
Transplantation Works |
|
|
a)
No site clearance shall be started at the locations of flora species of
conservation interest until the transplantation works completed. |
N/A |
|
b)
Set up buffer zone to enhance the protection of flora species of
conservation importance to be preserved / transplanted including the proposed
location for transplantation when the site clearance works shall commence
before the transplantation works completed. |
N/A |
|
Temporary
Protective Fence for Flora Species of Conservation Interest / Retained Tree |
|
|
a)
To erect a temporary protective fence enclosing the flora species of
conservation interest identified under the detailed vegetation survey. |
^ |
|
b)
To set up a protection zone at least 1m from the plant / retained tree and
erect robust, bright-coloured fencing of 1.5m in height. |
^ |
|
Maintenance
of the Protection Zone for Flora Species of Conservation Interest / Retained
Tree |
|
|
a)
Monthly monitoring of flora species of conservation interest identified in
the detailed vegetation survey should be conducted. |
^ |
|
b)
To inspect the temporary protective fence whether it is properly erected and maintained
during construction. |
^ |
|
Post-transplantation
Monitoring |
|
|
a)
Weekly post-transplantation monitoring of transplanted species in the first
three months and monthly afterwards. |
^ |
|
Maintenance
of Transplanted Species |
|
|
a)
To keep the soil moist by watering the receptor sites properly and
adequately. |
^ |
|
b)
To apply mulches on the soil surface over the plant root system, if required. |
^ |
|
c)
To remove unwanted weeds found in receptor sites. |
^ |
|
Other
Protection Measures for Flora Species of Conservation Interest / Retained
Tree / Vegetated Areas |
|
|
a)
All works should be confined within the site boundary. |
^ |
|
b)
Access of site staff should be controlled. |
^ |
|
c)
Care should be taken to prevent trees/plants being damaged by mechanical
equipment or stockpile both during site clearance works and construction
works. |
^ |
|
d)
No fixings should be driven into trees/plants. |
^ |
|
e)
No workshop, canteens, or similar should be installed beneath trees/plants,
nor will equipment maintenance etc. be carried out under trees/plants. |
^ |
|
f)
No excavation, including that for services or changes in ground level will
take place within the spread of the crown of the trees / plants. |
^ |
|
g)
No soil, debris or construction materials should be deposited around and
against the trunk of a tree/plant as this causes bark damage and compaction
of the soil. |
^ |
|
h)
No fire should be lit below the branches and no petrol, oil or caustic
substances stored near the trees/plants. |
^ |
|
i)
No trees/plants should be used for anchoring or winching purposes or for the
display of signs. |
^ |
|
j)
Any damage or injury to the retained / transplanted plants should be reported
as soon as possible for repair immediately. |
^ |
|
Implementation status: |
^ |
Mitigation measure was fully implemented |
|
* |
Observation/reminder was made during
monitoring but improved/rectified by the contractor |
|
|
# |
Observation/reminder was made during
monitoring but not yet improved/rectified by the contractor |
|
|
X |
Non-compliance of mitigation measure |
|
|
• |
Non-compliance but rectified by the
contractor |
|
|
N/A |
Not Applicable at this stage as no such
site activities were conducted in the reporting period |
Precautionary
Measure for Butterfly Species of Conservation Interest
5.9
According
to FEP Condition 2.17, with consideration of minimizing impact on butterfly
species of conservation interest, the re-establishment of the new grassland areas
in the Project site shall be enhanced, through planting of appropriate plant
species which are the larval food plants of butterfly species of conservation
interest such as Small Three-Ring, in order to benefit these species.
5.10
The
re-establishment of grassland areas in the Project shall be implemented before
Commencement of Operation of the Project. Details of the plant species as
larval food plants of butterflies including design and implementation
arrangement will be further submitted under ArchSD’s building works contract.
Precautionary
Measures to Minimize Indirect Disturbance on Ecology
5.11 In
accordance with Section 9.7.3 of EIA Report, mitigation measures for air,
noise, water, waste and landscape aspects could act as precautionary measures
to prevent and minimize any indirect disturbance impact or pollution arisen
from the construction activities on the local ecology and offsite habitats. Site
audits were carried out by ET on weekly basis to monitor the timely
implementation of proper environmental management practices and mitigation
measures on the Project site and the observations are summarised in Section
7.3.
6 LANDSCAPE
AND VISUAL MONITORING
Monitoring
Requirements
6.1 The EIA
Report has recommended mitigation measures for landscape and visual resources
to be undertaken during the construction and operation phases of the Project.
6.2 These
measures include the consideration of a number of development options and the
provision of mitigation measures to directly offset unavoidable impacts. The
measures include strategies for reducing, offsetting and compensating impacts
during construction and operation phases according to Section 10.13 in the EIA
Report.
6.3 The implementation and maintenance
of landscape compensatory planting measures is a key aspect of this and shall
be checked to ensure that they are fully realised and that potential conflicts
between the proposed landscape measures and any other Project works and
operational requirements are resolved at the earliest possible date and without
compromise to the intention of the mitigation measures. In addition,
implementation of the mitigation measures recommended by the EIA shall be
monitored throughout the construction phase site audit programme.
6.4 Bi-weekly inspection of the
implementation of landscape and visual mitigation measures was conducted by ET
during weekly site audit. The observation and recommendations made during the
audit sessions are summarised in Table 7.1. The implementation status is given
in Appendix K.
7 ENVIRONMENTAL
SITE INSPECTION
Site Audits
7.1 Site audits were carried out by ET
on weekly basis to monitor the timely implementation of proper environmental
management practices and mitigation measures on the Contract site.
7.2 Site audits were conducted by ET
with the representative of the Client’s Representative and the Contractor on 02,
09, 16, 24, 30 January 2024 in the reporting month. Site audits with the
representative of the Contractor and IEC were carried out on 24 January 2024.
7.3 During site inspections in the
reporting month, no specific environmental issues were observed. These
observations only reflect the conditions at those specific times. The
observations and advice provided during the audit sessions are summarized in Table
7.1. No specific environmental issues are observed during the joint site
inspection shall not relieve the Contractor duties and responsibilities in full
compliance with the statutory requirements, Particular Specifications and
EM&A Manual.
Table 7.1 Observations
of Weekly site Inspection and advice
|
Parameters |
Date |
Observations |
Advice |
|
Air Quality |
-- |
No specific environmental issues are observed |
-- |
|
Construction
Noise Impact |
-- |
No specific environmental issues are observed |
-- |
|
Water Quality |
-- |
No specific environmental issues are observed |
-- |
|
Waste/ Chemical
Management |
-- |
No specific environmental issues are observed |
-- |
|
Landscape and
Visual |
-- |
No specific environmental issues are observed |
-- |
|
Ecology |
-- |
No specific environmental issues are observed |
-- |
|
Permit /Licences |
-- |
No specific environmental issues are observed |
-- |
|
Others |
-- |
No specific environmental issues are observed. |
-- |
Implementation
Status of Environmental Mitigation Measures
7.4 According
to the EIA Report, Environmental Permit and the EM&A Manual of the Project,
the mitigation measures detailed in the documents are recommended to be
implemented during the construction phase. An updated summary of the
Environmental Mitigation Implementation Schedule (EMIS) is provided in Appendix
K.
Solid and Liquid Waste Management Status
7.5 In
accordance with the EM&A Manual, waste management was audited during weekly
site audit to determine if wastes are being managed in accordance with the
Waste Management Plan (WMP) prepared for the Project and the relevant
legislative and contractual requirements. Waste management practices including
waste handling, storage, transportation, and disposal were audited.
7.6 The
Contractor has nominated on-site Environmental Officers to oversee the
environmental management, pollution control measures, good site practices and
training of site personnel in waste management. Proactive measures have been
undertaken to make use of Construction and Demolition (C&D) materials to
minimize the waste generated. On-site sorting and screening of excavated
materials have been carried out to recover any recyclable portions. Inert
C&D materials were used on-site for backfilling works and hard paving of
haul road. In addition, inert C&D materials generated from excavation works
were reused as fill materials in other local projects. The surplus inert
C&D materials were disposed of at the Government’s public fill reception
facilities (PFRFs) for beneficial use by other projects. In order to monitor
the disposal of inert and non-inert C&D materials and to control
fly-tipping, every excavated material before leaving the site is weighted by a
weight bridge and Trip Ticket System is strictly followed.
7.7 The
Contractors are advised to minimize the wastes generated through the recycling
or reusing. All mitigation measures stipulated in the EM&A Manual and waste
management plans shall be fully implemented. The status of implementation of
waste management and reduction measures is summarised in Appendix K.
7.8 Waste
generated from this Project includes inert C&D materials and non-inert
C&D materials. Non-inert C&D materials are made up of general refuse
and waste that cannot be reused or recycled and has to be disposed of at the
designated landfill sites. The amount of wastes generated by the construction
works of the Project during the reporting month is shown in Appendix L.
8 ENVIRONMENTAL
NON-CONFORMANCE
Summary of
Exceedances
8.1 No
exceedance of Action and Limit Levels of air quality was recorded in the
reporting month.
8.2 No
exceedance of Action and Limit Levels of construction noise was recorded in the
reporting month.
8.3 Should the
monitoring results of the environmental monitoring parameters at any designated
monitoring stations indicate that the Action / Limit Levels are exceeded, the
actions in accordance with the Event and Action Plans in Appendix I be
carried out. The summary of exceedance record in reporting month is shown in Appendix
J.
Summary of
Environmental Non-Compliance
8.4 No
environmental non-compliance was recorded in the reporting month.
Summary of
Environmental Complaint
8.5 No
complaint was received in the reporting month. The Cumulative Complaint Log
since the commencement of the Project is presented in Appendix M.
Summary of
Environmental Summon and Successful Prosecution
8.6 There was
no successful environmental prosecution or notification of summons received
since the Project commencement. The Cumulative Log for environmental summon and
successful prosecution since the commencement of the Project is presented in Appendix
N.
9 FUTURE
KEY ISSUES
Key Issues in the Coming Three Months
9.1 The
tentative construction programmes for the Project are provided in Appendix A.
The major construction activities undertaken in the coming three months will
include:
- Open cut
excavation
- Removal of soil
- Construction of
footings
- Construction of
pile cap
- Mock up
construction
- U.U. Lead in and
Pipe Duct Connection
9.2 With
reference to the site layout plan including the indication of coming three
months construction site activities in Appendix A, potential
environmental impacts arising from the above construction activities are mainly
associated with construction dust, noise, water quality, waste management,
landscape and visual and ecology. The foreseeable environmental impacts were
taken into consideration of the planned mitigation measures in the coming
months.
9.3 The
mitigation measures to be implemented for the coming three months were proposed
by the Contractor, and reviewed by ET, IEC and the Client’s Respective through
Email during site audit and SSEMC meeting. The Proactive Environmental
Protection Proforma summarizing the major site activities, potential
environmental impacts and recommended mitigation measures was reviewed and verified
by IEC and was shown in Appendix A.
9.4 Dust can be
generated during construction works and exposed site areas during dry weather.
To prevent high dust concentrations during the dry weather, the Contractor
should pay attention on the air quality mitigation measures as far as
practicable to minimise the dust impact to the villages which are located
adjacent to the Project works (refer to the layout plan in Appendix A).
The Contractor was also reminded to follow the Project Implementation Schedule
in approved EIA report / EM&A Manual to implement appropriate dust control
measure to reduce dust emissions from heavy construction activities (including
ground excavation, earth moving, etc.) at all active works area exposed site
surfaces and unpaved roads, particularly during dry weather and covering 80% of
stockpiling area by impervious sheets and spraying all dusty material with
water immediately prior to any loading transfer operations to keep the dusty
materials wet during material handling at the stockpile areas” as well as the
relevant dust control practices as stipulated in the Air Pollution Control
(Construction Dust) Regulation so that no adverse dust impact arising from the
Project works site.
9.5 In
addition, construction noise is also one of the key environmental issues during
construction of the Project. Noise mitigation measures such as using quiet
plants and noise barriers should be in place, where applicable. In addition,
the Contractor was reminded to frequently check and maintain the acoustic
materials wrapped on noisy part of PME and ensure no gaps between noise
barriers; proactively identify any potential construction noise impact to NSRs
and provide sufficient mitigation measures if necessary; and provide
notification to nearby villagers in Kong Nga Po for potential noisy works at
works area.
9.6 The
Contractor is also recommended to maintain water quality mitigation measures
during construction works. The
dikes or embankments for flood protection should be implemented around the
boundaries of earthwork areas. Temporary ditches should be provided to
facilitate the runoff discharge into an appropriate watercourse, through a
site/sediment trap. The sediment/silt traps should be incorporated in the
permanent drainage channels to enhance deposition rates. Efficient silt removal
facilities shall be deployed to ensure all treated effluent from wastewater
treatment plant shall meet the requirements as stated in WPCO licences. The
site drainage plan shall also be updated based on the site condition and
construction programme.
Monitoring Schedule for the Next Month
9.7 The
tentative environmental monitoring schedule for the next month is shown in Appendix
D.
10 CONCLUSIONS
AND RECOMMENDATIONS
Conclusions
10.1 This
Monthly EM&A Report presents the EM&A work undertaken in January 2024
in accordance with EM&A Manual.
10.2 No Action/Limit Level
exceedance was recorded for air quality monitoring in the reporting month.
10.3 No Action/Limit Level
exceedance was recorded for construction noise monitoring in the reporting
month.
10.4 Environmental
site inspections were conducted on 02,
09, 16, 24, 30 January 2024 and landscape and visual monitoring was carried out
on 02, 16, 30 January 2024, whereas ecological monitoring was carried out on 30
January 2024 by ETL in the reporting month, and additionally by the Contractor
on 31 January 2024. No environmental non-compliance was recorded in the
reporting month. No specific environmental issues are observed during the joint
site inspection shall not relieve the Contractor duties and responsibilities in
full compliance with the statutory requirements, Particular Specifications and
EM&A Manual.
10.5 No complaint was
received in the
reporting month. No notification of summons or successful prosecutions
was received in the reporting month.
10.6
The ET would keep track
on the EM&A programme. The environmental requirements are complied with and
all necessary mitigation measures are properly implemented.
Recommendations
10.7 According to the
environmental audits performed in the reporting month, the following
recommendations were made:
Air
Quality Impact
l
To
enhance the dust suppression measures including watering for the dust
generation works, exposed site area and haul road;
l
To
minimize the indirect impacts on air quality resulting from the operation of
machineries on the construction site, one of the measures to be adopted is the
use of biodiesel B100; and
l
To
regular check the valid NRMM labels are properly displayed on the regulated
machines and non-road vehicles
Construction
Noise
l
To
refer to the ISO 12001:1996 or other comprehensive practices and subsequently
develop a thorough inspection and maintenance protocol for the plant and
equipment, maintaining a focus on Noise Control; and
l
To
maintain temporary noise barriers for operations of noisy equipment near the
noise sensitive receivers, if necessary.
Water
Impact
l
To
maintain the cover for open stockpile of and exposed slope;
l
To
keep reviewing and updating temporary drainage system;
l
To
maintain the earth bunds or sand bag barriers on site to direct stormwater to
silt removal facilities; and
l
To
divert the muddy water at the retention pond to the wetsep for treatment before
discharging out.
Waste/Chemical
Management
l
To
check for any accumulation of waste materials or rubbish on site; and
l
To
avoid improper handling, storage and dispose of oil drums or chemical
containers on site.
Ecology
l
To
maintain soil moisture, daily watering is required;
l
To
install a shaded net;
l
To
consult the155331 guidelines on soil improvement issued by the Greening,
Landscape and Tree Management Section (GLTMS) of th255863e Development Bureau
(2022) for the effective monitoring and maintenance of transplanted flora
species; and
l
The
wild plants that are growing in undesirable areas should be removed, as they
compete with the cultivated flora species of conservation interest.
Landscape
and Visual
l
To
remove the construction materials within the tree protection zone; and
l
To
keep the tree protection zone large enough to protect the tress.