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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 |
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Air Quality |
5 |
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Construction Noise |
5-6 |
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Ecological Monitoring |
6 |
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Environmental Non-Compliance |
6 |
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Environmental Complaint |
6 |
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Notification of Summons and Successful
Prosecutions |
6 |
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Reporting Changes |
6 |
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Future Key Issues |
6-7 |
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INTRODUCTION |
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Purpose of the report |
8 |
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Structure of the report |
8-9 |
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2 |
PROJECT INFORMATION |
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Background |
10 |
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Project Organization |
10-11 |
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Summary of Construction Works Undertaken
During Reporting Month |
11 |
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Construction Programme |
11 |
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Status of Environmental Licences,
Notifications and Permits |
11-12 |
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Summary of EM&A Requirement |
12 |
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Status of Compliance with Environmental
Permits Conditions |
12-13 |
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3 |
AIR QUALITY MONITORING |
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Monitoring Requirements |
14 |
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Monitoring Location |
14 |
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Monitoring Equipment |
14-15 |
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Monitoring Parameters, Frequency and
Duration |
15 |
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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 |
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4 |
NOISE MONITORING |
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Monitoring Requirements |
18 |
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Monitoring Location |
18 |
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Monitoring Equipment |
18 |
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Monitoring Parameters, Frequency and
Duration |
19 |
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Monitoring Methodology and QA/QC Procedures |
19-20 |
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Maintenance and Calibration |
20 |
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Results and Observations |
20-21 |
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Event and Action Plan |
21 |
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5 |
ECOLOGICAL MONITORING |
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Monitoring of Flora Species of Conservation
Interest |
22 |
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Post-Transplantation Monitoring and
Maintenance Programme |
22-23 |
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Results and Observations |
23-26 |
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Precautionary Measure for Butterfly Species
of Conservation Interest |
26 |
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Precautionary Measures to Minimize Indirect
Disturbance on Ecology |
26 |
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6 |
LANDSCAPE AND VISUAL MONITORING |
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Monitoring Requirements |
27 |
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7 |
ENVIRONMENTAL SITE INSPECTION |
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Site Audits |
28 |
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Implementation Status of Environmental
Mitigation Measures |
29 |
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Solid and Liquid Waste Management Status |
29 |
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8 |
ENVIRONMENTAL NON-CONFORMANCE |
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Summary of Exceedances |
30 |
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Summary of Environmental Non-Compliance |
30 |
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Summary of Environmental Complaint |
30 |
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Summary of Environmental Summon and
Successful Prosecution |
30 |
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9 |
FUTURE KEY ISSUES |
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Key Issues in the Coming Three Months |
31-32 |
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Monitoring Schedule for the Next Month |
32 |
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10 |
CONCLUSIONS AND RECOMMENDATIONS |
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Conclusions |
33 |
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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 9th 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 December 2023.
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 |
04, 08, 14,
20, 22, 28 December 2023 |
|
Noise
Monitoring |
04, 14, 20,
28 December 2023 |
|
Ecological
Monitoring |
29, 30 December
2023 |
|
Environmental
Site Inspection |
|
|
Landscape
& Visual Inspection |
5, 20 December
2023 |
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. One 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 |
|
Senior Environmental
Officer |
Ms. Marian Kong |
6174 9735 |
2866 6325 |
|
|
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-RN0992-23 |
23-09-2023 |
19-12-2023 |
Valid |
|
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 (December 2023)” 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 |
54 |
35 – 69 |
308 |
500 |
|
AM2 |
79 |
59 – 95 |
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] |
57.2 |
55.4 – 58.3 |
55.9 |
75 |
|
NM10[1] |
51.3 |
50.0 – 52.7 |
52.8 |
|
|
NM11 |
45.8 |
42.8 – 47.6 |
46.4 |
|
|
NM12 |
46.1 |
42.2 – 50.1 |
54.7 |
|
|
NM13[1] |
53.1 |
52.6 – 53.7 |
61.3 |
|
|
NM14[1] |
43.4 |
42.4 – 44.0 |
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 30th December 2023 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 5, 12, 20, 29 December 2023 in the
reporting month. Site audits with the representative of the Contractor and IEC
were carried out on 20 December 2023.
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.
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 |
29-12-2023 |
The chemical is left lying
around |
The Chemical is stored, not left lying around |
|
29-12-2023 |
The materials other than
plastic have been observed and stored within the confines of the plastic recycling cage |
The plastic recycling cage is only for the containment of plastic materials |
|
|
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 One
complaint related to water quality were 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 December 2023
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 5, 12, 20, 29 December 2023 and landscape
and visual monitoring was carried out on 5, 20 December 2023, whereas
ecological monitoring was carried out on 29 December 2023 by ETL in the
reporting month, and additionally by the Contractor on 30 December 2023. No
environmental non-compliance was recorded in the reporting month.
10.5 One complaint related to
water quality were
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; 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; and
l To consult
the guidelines on soil improvement issued by the Greening, Landscape and Tree
Management Section (GLTMS) of the Development Bureau (2022) for the effective
monitoring and maintenance of transplanted flora species.
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.