Agreement No. CE 20/2004(EP) North East New Territories (NENT) Landfill Extension Monthly Environmental Monitoring and Audit
Report (No. 18) – May 2024 |
Contents
12 Environmental Non-conformance
13 Implementation Status on Environmental Mitigation
Measures
Figure
Location of the Project Site |
|
Impact Air Quality, Noise & Surface Water Monitoring Locations |
|
Landfill
Gas Monitoring Locations |
Appendix
Construction Programme & Construction Site Activities |
|
Project Organization Chart & Management Structure |
|
Detail Status of FEP & EP Submission |
|
Monitoring Schedule for Reporting Month & Next Month |
|
Calibration Certificates |
|
Monitoring Results |
|
Graphical Presentations |
|
Notification of Environmental Quality Limits Exceedance |
|
Wind Data |
|
Waste Flow Table |
|
Joint Environmental Site Inspection Records |
|
Environmental Mitigation Implementation Schedule (EMIS) |
|
Mitigation Measures of Cultural Landscape Features |
|
Cumulative Complaint / Enquiry Log, Summaries of Complaints and Enquiries |
Aurecon Hong Kong Limited (Aurecon) was appointed to undertake the
role of Environmental Team (ET) and carry out Environmental Monitoring and
Audit for the North East New Territories (NENT)
Landfill Extension.
The
construction phase and EM&A programme of the Project commenced on 1 December
2022.
This
18th Monthly EM&A Report presents the EM&A works conducted
from 1 to 31 May 2024 in accordance with the EM&A Manual.
Summary of Construction Works
undertaken during Report Period
The major construction works undertaken during the reporting period include:
-
Material
loading and unloading, site traffic at Portion A, SBA to alternative disposal
ground |
-
Construction
of site buildings at Portion D |
-
Site
clearance at Portion A, B2/E1, E3-1 & E4 |
-
Installation of permanent fencing at Portion A,
B1 & E4 |
-
Site
formation at Portion A & E3-1 |
-
Tree
felling at Portion B2/E1, E3-1 & E4 |
-
Shotcreting (Permanent and
Temporary) |
-
Soil Nail Installation at Portion A, B2/E1 &
E4 |
Environmental Monitoring and
Audit Progress
A summary of the monitoring activities in this reporting period is listed below:
Times |
Date |
|
-
Air Quality
Monitoring during normal weekdays at each monitoring station |
6 times |
2, 8, 14, 20, 25 & 31 May 2024 |
-
Construction Noise Monitoring during normal
weekdays at each monitoring station |
5 times |
2, 8, 14, 20 & 31 May 2024 |
-
Surface Water Quality Monitoring during normal
weekdays at each monitoring station |
1 time |
8 May 2024 |
-
Landfill Gas Monitoring during
normal weekdays for Construction Works |
23 times |
2 to 4, 6 to 11, 13 to 14, 16 to 18, 20 to 25
& 27 to 29 May 2024 |
4 times |
6, 13, 20 & 27 May 2024 |
|
-
Site Inspection from
EPD-RNG |
1 time |
30 May 2024 |
Environmental
Exceedance
Air Quality, Noise, Surface Water Quality
Monitoring & Landfill Gas Monitoring
No exceedance of the Action and Limit
Levels were recorded at designated monitoring stations during the reporting
period.
Environmental
Non-Conformance/Complaint/Summons and Prosecution
No
non-compliance event was recorded during the reporting period.
One
complaint received on 9 May 2024 was reported during the reporting period. The
complaint was investigated by related parties on 13, 20 and 30 May 2024. The
related investigation results will be presented when the investigation was
finished.
No
summons/prosecutions were received in the reporting period.
Reporting Change
There was no reporting change in the reporting period.
Future
Key Issues
Works to be undertaken in the next month include:
-
Material loading and
unloading, site traffic at Portion A, SBA to alternative disposal ground |
-
Construction of site
buildings at Portion D |
-
Site clearance at Portion
A, B2/E1, E3-1 & E4 |
-
Installation
of permanent fencing at Portion A, B1 & E4 |
-
Site formation at Portion A
& E3-1 |
-
Tree felling at Portion
B2/E1, E3-1 & E4 |
-
Shotcreting
(Permanent and Temporary) |
-
Soil
Nail Installation at Portion A, B2/E1 & E4 |
Potential environmental impacts arising from the above construction
activities are mainly associated with air quality, construction noise, water
quality, waste management, landfill gas monitoring, landscape and visual, cultural
heritage and ecology.
1.1 Background
1.1.1 The North East New Territories Landfill Extension (the NENTX Project) is located adjacent to the existing North East New Territories (NENT) Landfill at Ta Kwu Ling. The extension site is located in a valley covering mainly the existing NENT Landfill Stockpile and Borrow Area that was formed to the east of the existing landfill as part of the original site development of the landfill, and layout plan shown in Figure 1.
1.1.2 The NENTX is a designated project. The Environmental Impact Assessment (EIA) Report (AEIAR-111/2007) and an Environmental Monitoring and Audit Manual were approved on 20 September 2007. The project is governed by an Environmental Permit (EP) (EP-292/2007) which was granted on 26 November 2007. A further of EP (FEP) was applied and the FEP (FEP-01/292/2007) was subsequently granted on 28 April 2022. Another further of EP (FEP-02/292/2007) was subsequently granted on 23 August 2023.
1.1.3 In accordance with the requirements specified in Section 2.7 to 2.11 and Section 12.3 of the approved Environmental Monitoring and Audit (EM&A) Manual and Environmental Permit and Further Environmental Permit (EP and FEP) Condition 3.3, Monthly EM&A report should be submitted to the Director of Environmental Protection (DEP), within 2 weeks after the end of the reporting month. The submissions shall be certified by the Environmental Team (ET) Leader and verified by the Independent Environmental Checker (IEC).
1.1.4 The construction phase and EM&A programme of the Project commenced on 1 December 2022.
1.2 Nature, Scale and Scope of the captioned Designated Project
1.2.1 The Nature, Scale and Scope of the captioned Designated Project is presented in Table 1-1.
Table 1-1 Nature, Scale and Scope
of the captioned Designated Project
Item(s) |
Content |
Nature
of Designated Project |
Construction and operation of a landfill for waste
as defined in the “Waste Disposal Ordinance” (Cap. 354) |
Scale and Scope of Designated Project |
The Project mainly consists of the followings: - Construction and operation of a landfill extension
of about 70 hectares with a target void space of at least 19 million cubic
metres on the eastern side of the existing NENT Landfill, including the
followings: - i. Site formation and preparation; ii.
Installation of liner system; iii.
Installation of leachate collection, treatment and
disposal facilities; iv.
Installation of gas collection, utilization and
management facilities; v.
Utilities provisions and drainage diversion; vi.
Landfilling operation; vii.
Restoration and aftercare in subsequent stages;
and viii.
Measures to mitigate environmental impacts as well
as environmental monitoring and auditing to be implemented. |
1.3 Purpose of this Report
1.3.1 This is the 18th Monthly EM&A Report which summarises the impact monitoring results and audit findings for the EM&A programme during the reporting period from 01 to 31 May 2024.
1.4 Structure of the Report
1.4.1 The structure of the report is as follows:
-
details the background, 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 Permit(s)/License(s) during
the reporting period.
Section 3 – Air Quality Monitoring
Section 5 – Water Quality Monitoring
Section 6 – Waste Management
Section
7 – Landfill Gas Monitoring
Section 8 – Landscape and Visual
Section 10 – Ecological Monitoring
Section 11 – Site Inspection and Audit
Section 12 – Environmental Non-Conformance
Section 13 – Implementation Status on Environmental Mitigation Measures
Section 14 – Future Key Issues
Section 15 – Conclusion
2.1.1 Construction programme and a summary of the major construction activities undertaken in this reporting period is shown in Appendix A.
2.2 Project Organization & Management Structure
2.2.1 The Project Organization Chart & Management Structure are shown in Appendix B. The key personnel contact information is summarized in Table 2-1.
Table 2-1 Contact Information of Key Personnel
Party |
Name |
Contact Number |
Contractor
(Veolia
Hong Kong Holding Ltd.) |
Mr. Matt Choy |
2902 5296 |
Independent Environmental Checker (IEC) (Meinhardt Infrastructure and Environment Ltd.) |
Ms. Claudine Lee |
2859 5409 |
Environmental Team Leader (ETL) (Aurecon Hong Kong Limited) |
Mr. Fredrick Leong |
3664 6888 |
2.3 Status of Submission required under the FEP & EP during reporting period
2.3.1 The status of statutory environmental compliance with the EP conditions under the EIAO, submission status under the FEP & EP during reporting period are presented in Table 2-2. The detail status of statutory environmental compliance with the EP conditions under the EIAO, submission status under the FEP & EP for NENTX project are shown in Appendix C.
Table 2-2 Status of Submissions required under the FEP
& EP during Reporting Period
EP
Condition |
Submission / Measures |
Status |
|
2.1 |
2.3 |
Management Organization of Main
Construction Companies |
Submitted |
2.2 |
2.4 |
Setting up of Community Liaison Group
(CLG) |
Community Liaison Group
was set up. |
2.3 |
2.5 |
Submission of EM&A Manual |
Submitted |
2.5 |
2.7 |
Submission of Vegetation Survey (Transplantation
Proposal) |
Submitted |
2.6 |
2.8 |
Submission of translocation proposal |
Submitted |
2.7 |
2.9 |
Submission of Transplantation Report and
Post-Transplantation Monitoring |
Submitted |
2.9 |
2.11 |
Submission of Detailed Landfill Gas
Hazard Assessment Report |
Submitted |
2.10 |
2.12 |
Submission of Waste Management Plan |
Submitted |
3.2 |
3.2 |
Submission of Baseline Monitoring
Report |
Submitted |
3.3 |
3.3 |
Submission of Monthly EM&A Report |
Submitted |
2.4 Status of Environmental Approval Document
2.4.1 A summary of the relevant valid permits, licences, and/or notifications on environmental protection for this Project since the granting of the FEP & EP is presented in Table 2-3.
Permit / Licenses / Notification |
Reference |
Expiry Date |
Remark |
Environmental
Permit (EP) |
EP-292/2007 |
Throughout
the Contract |
Permit
granted on 26 November 2007 |
Further Environmental Permit (FEP) |
FEP-01/292/2007 |
Throughout
the Contract |
Permit
granted on 28 April 2022 |
FEP-02/292/2007 |
Throughout
the Contract |
Permit
granted on23 August 2023 |
|
Notification
of Construction Works as required under Air Pollution Control (Construction
Dust) Regulation |
479809 |
Throughout
the Construction Phase |
Notified
on 13 May 2022 |
Registration
of Waste Producer under Waste Disposal Ordinance |
7043692 |
Throughout
the Contract |
Registered
on 13 April 2022 |
Construction Noise Permit |
GW-RN0240-24 |
7 June 2024 |
Permit
granted on 1 March 2024 |
Registration
as Chemical Waste Producer |
5213-642-P1034-18 |
Throughout
the Contract |
Registered
on 11 July 2022 |
Effluent
Discharge License under Water Pollution Control Ordinance |
WT00042301-2022 |
31 October 2027 |
Permit granted on 18 October
2022 Variation of Licence (Permit granted on 7 February
2023) |
2.5 Environmental Monitoring and Audit Progress
2.5.1 A summary of the monitoring activities in this reporting period is presented in Table2-4.
Table 2-4 Summary of the Monitoring Activities in this Reporting Period
Items |
Times |
Date |
-
Air Quality Monitoring during normal weekdays at
each monitoring station |
6 times |
2, 8, 14, 20, 25 & 31 May 2024 |
-
Construction Noise Monitoring during normal
weekdays at each monitoring station |
5 times |
2, 8, 14, 20 & 31 May 2024 |
-
Surface Water Quality Monitoring during normal
weekdays at each monitoring station |
1 time |
8 May 2024 |
-
Landfill Gas Monitoring during
normal weekdays for Construction Works |
23 times |
2 to 4, 6 to 11, 13 to 14, 16 to 18, 20 to 25
& 27 to 29 May 2024 |
-
Joint Environmental Site Inspection |
4 times |
6, 13, 20 & 27 May
2024 |
1 time |
30 May 2024 |
Air
Quality
6
sets of 1-hr & 24-hr TSP construction dust measurement were carried out at
each monitoring stations during normal weekdays of the reporting period. No
Action / Limit Level exceedance for 1-hr & 24-hr TSP impact monitoring was
recorded during the period.
Noise
5
sets of 30-minute construction noise measurement were carried out at each
monitoring stations during normal weekdays of the reporting period. No
exceedance of Action and Limit Levels of construction noise was recorded during
the reporting period.
Groundwater
Site
clearance of future landfilling area is in progress. The installation of
groundwater monitoring boreholes will be installed after the site formation
work of the landfilling area. The target commencement period of groundwater
monitoring will be in 2026. No groundwater monitoring is required before the
completion of site formation work of the landfilling area.
Surface
Water Quality
1
set of surface water quality measurement were carried out at each monitoring
stations during normal weekdays of the reporting period. No exceedance of Action
and Limit Levels of surface water quality at each monitoring stations was
recorded during the reporting period.
Landfill
Gas
23
sets of landfill gas measurement were carried out at the designated monitoring
locations during normal weekdays of the reporting period. No exceedance of
Action and Limit Levels of landfill gas was recorded during the reporting
period.
Landscape
and Visual
All
the specified and affected LCAs, LRs and VSRs have been monitored during the
reporting period. No exceedance of Action and Limit Levels of landscape and
visual was recorded during the reporting period.
Cultural
Heritage
Implementation
of the mitigation measures during construction phase of the Project has been
monitored through the regular site inspection/audit.
Ecology
Implementation
of the mitigation measures during construction phase of the Project has been
monitored through the regular site inspection/audit.
Environmental
Site Inspection
4
weekly environmental site inspections were carried out during the reporting
period. A joint environmental site inspection was carried out by the
representatives of the Employer's Representative (ER), the Contractor, IEC and the ET on 20 May 2024. The Contractor has generally
implemented part of the mitigation measures as recommended. One site inspection
on 30 May 2024 was conducted by Environmental Protection Department-Regional
Office (North) (EPD-RNG) during the reporting period.
3.1.1.1
In accordance with the EM&A Manual, 1-hr & 24-hr Total Suspended
Particulates (TSP) levels should be measured at the designated air quality
monitoring stations in every 6 days to ensure that any deteriorating air
quality could be readily detected, and timely action shall be undertaken to
rectify such situation. For 1-hr TSP monitoring, the sampling frequency of at
least three times in every six-days should be undertaken when the highest dust
impact occurs. The specific time to start and stop the 24- hr TSP monitoring
shall be clearly defined for each location.
3.1.2 Monitoring Parameters, Frequency and Location
3.1.2.1
According to the EM&A
Manual, three monitoring stations namely AM(D)1, AM(D)2 and AM(D)3 are selected
for the impact monitoring.
3.1.2.2 A baseline monitoring plan has been submitted to IEC and EPD on 31 May 2022 including the proposal with justification of change of monitoring locations. Due to limited access to the original monitoring locations at AM(D)1, AM(D)2 and AM(D)3, the adjusted stations at AM1, AM2 and AM3 were agreed with IEC prior to the baseline and impact monitoring. The locations of adjusted dust monitoring locations are shown in Figure 2.
3.1.2.3 The detailed monitoring schedule is shown in Appendix D. The locations of dust monitoring stations are shown in Table 3-1. The monitoring parameters, frequency and duration are shown in Table 3-2.
Table 3-1 Locations of Dust Monitoring Stations
Monitoring Station |
Representative For |
Monitoring Parameters |
|
AM1 |
Tung Lo Hang |
1-hr and 24-hr
TSP |
|
AM2 |
Heung Yuen Wai |
1-hr and 24-hr TSP |
|
AM3 |
Wo Keng Shan Tsuen |
1-hr and
24-hr TSP |
Remarks:
The contractor passed
correspondence including original monitoring locations specified on the Approved
EM&A Manual to the village representatives on 26 April 2022. After a
meeting with Ta Kwu Ling District Rural Committee
(RC) Chairman, representative from the RC and a few villagers on 1 May 2022,
all the Village Heads of Wo Keng Shan Tsuen, Heung Yuen Wai and Lin Ma Hang
verbally refused to accept our proposal for installation of dust and / or noise
monitoring equipment within or next to their villages, for the baseline &
impact monitoring.
AM(D)1
Tung Lo Hang, AM(D)2 Heung Yuen Wai, AM(D)3 Wo Keng Shan Tsuen are the air
monitoring stations for the construction phase EM&A programme as identified
in the approved EM&A Manual for the Project. The access to Tung Lo Hang,
Heung Yuen Wai and Wo Keng Shan Tsuen were denied. A search for alternative air monitoring
locations (AM1, AM2 & AM3) was carried out during the site visit.
The
Baseline Monitoring Plan has been submitted to IEC and EPD including the
proposal of change of monitoring locations on 31 May 2022. This arrangement
was conducted between baseline and impact monitoring and has been agreed by the
Independent Environmental Checker (IEC) and no comment received from EPD.
Due
to the adjustment of the location of AM(D)1, AM(D)2 & AM(D)3to AM1, AM2
& AM3, the measured air quality levels at AM1, AM2 & AM3 would
represent the air quality levels at AM(D)1, AM(D)2 & AM(D)3.
Table 3-2 Dust
Impact Monitoring Parameters, Frequency and Duration
Monitoring
Station |
Parameter |
Frequency and Duration |
AM1, AM2, AM3 |
1-hr TSP |
At least 3 times per 6 days |
24-hr TSP |
1 time per 6 days |
3.1.3.1 High volume samplers (HVSs) were used for carrying out 24-hr TSP monitoring. For 1-hr TSP monitoring, direct reading dust meters were used to measure 1-hr TSP levels.
3.1.3.2 Table 3-3 summarises the equipment that were used in the dust monitoring programme. The calibration certificates are shown in Appendix E.
Table 3-3 Dust Monitoring Equipment
Equipment |
Model |
Expiry Date |
Monitoring Station |
High
Volume Sampler (HVS) |
TE-5170X (S/N: 1105) |
1 Jul 2024 |
AM1 |
TE-5170X (S/N: 1106) |
AM2 |
||
TE-5170X (S/N: 1856) |
AM3 |
||
Direct
Reading Dust Meter |
Sibata LD-5R (S/N:
0Z4545) |
27
Nov 2024 |
AM1 to AM3 |
Sibata LD-5R (S/N: 882106) |
|||
Sibata LD-5R (S/N:
942532) |
|||
Calibration Kit (for HVS) |
TE-5025A (S/N: 3465) |
15 Jan 2025 |
AM1 to AM3 |
The Expiry Date of Calibration Kit (for HVS) reflected that the calibration
certificate fulfils the bi-monthly calibration interval requirement for the HVS.
1-hr TSP Monitoring
3.1.4.1
The 1-hr TSP impact monitoring was conducted using a portable direct
reading dust meter.
3.1.4.2
The measuring procedures of the 1-hr dust meter has been undertaken in
accordance with the Manufacturer’s Instruction Manual as follows:
Procedure
of starting monitoring
Procedure
of setting measurement timer
3.1.4.3 The direct reading dust meters will be verified against calibrated high volume samples (HVSs) annually. A 2-day, three 3-hour measurement results per day from direct reading dust meter will be taken to compare with the sampling results from the HVS. The correlation between the direct reading dust meter and the HVS will then be concluded. By accounting for the correlation factor, the direct reading dust meter will be considered to achieve comparable results as that of the HVS.
3.1.4.4
All digital dust indicator will be
calibrated with on-site HVS annually. Calibration certificate will be provided
after calibration. The Calibration process shall eyewitness with the
representative of ET & IEC.
3.1.4.5
Checklist of regular checking for digital
dust meter will be conducted bi-weekly by environmental technician to ensure
the all-digital dust meter are in good condition and submitted to supervisors.
All checklists will be kept by supervisors.
3.1.4.6
Logbook is provided to environmental
technician record the transferal of equipment to other colleagues, reporting to
supervisors is required.
24-hr
TSP Monitoring
3.1.4.7
The 24-hr TSP monitoring has been conducted using a High-Volume Sampler
(HVS).
3.1.4.8
The HVS has been set-up at the monitoring location with a fixed power
supply for operation. The measuring procedures of the 24-hr TSP measurements has
been undertaken in accordance with the specifications listed in the EM&A
Manual. Each HVS includes a motor, a
filter holder, a flow controller and a sampling inlet
in accordance with the performance specification of the USEPA Standard Title
40, Code of Federation Regulations Chapter 1 (Part 50), Appendix B. The
measuring procedures of the 24-hr dust meter was undertaken in accordance with
the Manufacturer’s Instruction Manual as follows:
3.1.4.9
In addition, site conditions and dust sources were recorded in a standard
form for direct input into a database.
3.1.4.10
The high volume motors and their accessories
should be properly maintained, including routine motor brushes replacement and
electrical wiring checking, to ensure that the equipment and a continuous power
supply were in good working condition.
3.1.4.11
Initial calibration of dust monitoring equipment shall be conducted upon
installation and thereafter at bi-monthly intervals. The transfer standard shall be
traceable to the internationally recognized primary standard and be calibrated
annually.
The detail procedure of calibration of HVS
is listed below:
1.
Make sure the electrical circuit is
connected properly. The motor should be directly connected to the power source.
2.
Open the top cover and unlock
the screws at the four corners.
3.
Install the orifice and adapter plate to
high volume air sample. Tighten the nut securely. Turn the knob of orifice clock-wise to close the four holes on the bottom open.
4.
Hold the water manometer on the cover of
mass flow controller vertically. Connect one side of a water manometer to the
pressure tap on the side of the orifice with a rubber vacuum tube. Leave
opposite side of the manometer open to the atmosphere.
5.
Turn on the sampler
6.
Five flow rates are achieved by changing
the different plates to change the resistance. Record the manometer reading and
the reading from continuous flow recorder. At least 5 sets of data should be
recorded.
3.1.4.12
The Calibration process shall eyewitness with the representative of ET
& IEC.
3.1.5.1 The impact dust monitoring results are summarized in Table 3-4 and Table 3-5. The monitoring data together with graphical presentations are presented in Appendix F and Appendix G.
Month |
Average
1-hr TSP Concentration, µg/m³ (Range) |
||
Dust Monitoring Station |
|||
AM1 |
AM2 |
AM3 |
|
May 2024 |
24 (20 – 31) |
44 (39 – 51) |
49 (39 – 56) |
Action Level |
>285 |
>279 |
>285 |
Limit Level |
>500 |
Month |
Average
24-hr TSP Concentration, µg/m³ (Range) |
||
Dust Monitoring Station |
|||
AM1 |
AM2 |
AM3 |
|
May 2024 |
115 (92 – 137) |
127 (116 – 138) |
118 (95 – 135) |
Action Level |
>164 |
>152 |
>163 |
Limit Level |
>260 |
3.1.5.2 The Summary of Impact 1-hr & 24-hr TSP Exceedance during the reporting period are shown in Table 3-6. The Notification of Environmental Quality Limits Exceedances are presented in Appendix H.
Dust
Monitoring Station |
AM1 |
AM2 |
AM3 |
||||
Level
Exceedance Parameters |
Action
Level |
Limit
Level |
Action
Level |
Limit
Level |
Action
Level |
Limit
Level |
|
1-hr TSP |
Exceedance Date |
- |
- |
- |
- |
- |
- |
Exceedance Count |
0 |
0 |
0 |
0 |
0 |
0 |
|
24-hr TSP |
Exceedance Date |
- |
- |
- |
- |
- |
- |
Exceedance Count |
0 |
0 |
0 |
0 |
0 |
0 |
Remarks: * equal
to non-project related
3.1.5.3 No Action / Limit Level exceedance for 1-hr & 24-hr TSP impact monitoring at AM1, AM2 & AM3 was recorded during the period.
3.1.6.1
During the monitoring period. wind data from existing weather station in
the vicinity of the designated monitoring location, i.e
Ta Kwu Ling station operated by Hong Kong Observatory
was adopted. It is considered that the wind data obtained from Ta Kwu Ling station are representative of the Project area and
could be used for the construction dust monitoring programme for the Project. The
results for wind data monitoring are presented in Appendix I.
3.1.7 Recommended Mitigation Measures
3.1.7.1 The recommended dust mitigation measures from EIA report are listed as followed:
• The contractor shall follow the procedures and requirements given in the Air Pollution Control (Construction Dust) Regulation.
• Dust emission from construction vehicle movement is confined within the worksites area.
• Watering facilities will be provided at every designated vehicular exit point.
• Good site practice is recommended during construction phase.
3.1.8.1 Should non-compliance of the criteria occur, action in accordance with the action plan in Table 3-7 shall be carried out.
Table 3-7 Event and
Action Plan for Dust Impact
Event |
ET |
IEC |
Contractor |
Exceedance of Action Level |
|||
Exceedance
for one sample |
•
Identify
source •
Prepare
Notification of Exceedance •
Inform
IEC and Contractor •
Repeat
measurement to confirm findings •
Increase
monitoring frequency to daily if exceedance is due to the Project and
continue until the monitoring results reduce to below action level |
•
Verify
the Notification of Exceedance •
Check
monitoring data submitted by ET and Contractor's working methods •
Discuss
with ET and Contractor on proposed remedial measures |
•
Rectify
any unacceptable practice •
Amend
working methods if appropriate |
Exceedance for two or more consecutive samples |
• Identify source • Prepare Notification of Exceedance • Inform Contractor and IEC • Repeat measurements to confirm findings •
Increase
monitoring frequency to daily if exceedance is due to the Project and
continue until the monitoring results reduce to below action level • Discuss with IEC for remedial action required • Ensure remedial measures are properly implemented • Continue monitoring at daily intervals
if exceedance is due to the Project • If no exceedance for 3 consecutive days,
cease additional monitoring |
• Verify the Notification of Exceedance • Check monitoring data submitted by ET
and Contractor's working methods • Discuss with ET and Contractor on
proposed remedial measures • Review with analysed results submitted
by ET • Review the proposed remedial measures
by Contractor • Supervise the implementation of
remedial measures |
• Submit proposals for remedial actions
to IEC within 3 working days of notification • Implement the agreed proposals • Amend proposal if appropriate |
Event |
ET |
IEC |
Contractor |
Exceedance of Limit Level |
|||
Exceedance
for one sample |
• Identify source • Prepare Notification of Exceedance • Inform IEC and Contractor • Repeat measurement to confirm findings •
Increase
monitoring frequency to daily if exceedance is due to the Project and
continue until the monitoring results reduce to below limit level • Assess effectiveness of Contractor's
remedial actions and keep EPD and IEC informed of the results |
• Verify the Notification of Exceedance • Check monitoring data submitted by ET and
Contractor's working methods • Discuss with ET and Contractor potential remedial actions • Supervise the implementation of remedial measures |
• Take immediate action to avoid further exceedance • Submit proposals for remedial actions to IEC within
3 working days of notification • Implement the agreed proposals • Amend proposal if appropriate |
Exceedance
for two or more consecutive samples |
•
Identify source •
Prepare Notification of Exceedance •
Inform IEC and EPD the causes and actions taken for the exceedances •
Discuss with IEC for remedial action required
•
Ensure remedial measures are properly implemented •
Assess effectiveness of Contractor’s remedial actions and keep
IEC, EPD and informed of the results •
Increase monitoring frequency to confirm findings •
If exceedance stops, cease additional monitoring |
•
Verify the Notification of Exceedance •
Check monitoring data submitted by ET and Contractor's working methods •
Discuss amongst ET and Contractor on the potential remedial
actions. •
Review Contractor's remedial actions whenever necessary to
assure their effectiveness •
Supervise the implementation of remedial measures |
•
Take immediate action to avoid further exceedance •
Submit proposals for remedial actions to IEC of notification •
Implement the agreed proposals •
Resubmit proposals if problem still not under control •
Stop the relevant activity of works until the exceedance is
abated |
4.1.1
In
accordance with the EM&A manual, noise impact monitoring shall be carried
out at 2 monitoring stations NM1 and NM2 once a week during normal construction
working hour (0700-1900 Monday to Saturday). The minimum logging interval shall
be 30 minutes with average of 6 consecutive Leq 5
mins. L10 and L90 shall also be measured at 5 mins intervals.
4.2 Monitoring Locations, Parameters and Frequency
4.2.1
According
to the EM&A Manual, two monitoring stations namely NM1 and NM2 are selected
for the impact monitoring.
4.2.2
A baseline
monitoring plan has been submitted to IEC and EPD on 31 May 2022 including
the proposal with justification of change of monitoring locations. Due to
limited access to the original monitoring locations at NM1 and NM2, the
adjusted stations at NM1a and NM2a were agreed with IEC prior to the baseline and
impact monitoring. The noise monitoring locations are summarized in Table 4-1
and shown in Figure 2.
4.2.3
The detailed monitoring schedule is shown in Appendix D. The
frequency and duration are shown in Table 4-2.
Monitoring
Station |
Representative
for |
Type of
Measurement |
|
NM1a |
Wo Keng Shan Tsuen |
Free field |
|
NM2a |
Lin Ma Hang |
Free field |
The contractor passed correspondence including original
monitoring locations specified on the Approved EM&A Manual to the village
representatives on 26 April 2022. After a meeting with Ta Kwu
Ling District Rural Committee (RC) Chairman, representative from the RC and a
few villagers on 1 May 2022, all the Village Heads of Wo Keng Shan Tsuen, Heung
Yuen Wai and Lin Ma Hang verbally refused to accept our proposal for
installation of dust and / or noise monitoring equipment within or next to
their villages, for the baseline & impact monitoring.
NM1 Wo Keng Shan Tsuen & NM2 Lin Ma Hang are the noise
monitoring stations for the construction phase EM&A programme as identified
in the approved EM&A Manual for the Project. The access to Tung Lo Hang,
Heung Yuen Wai and Wo Keng Shan Tsuen were denied. A search for alternative noise monitoring
locations (NM1a & NM2a) was carried out during the site visit.
The Baseline Monitoring Plan has been submitted to IEC and
EPD including the proposal of change of monitoring locations on 31 May 2022. This
arrangement was conducted between baseline and impact monitoring and has been
agreed by the Independent Environmental Checker (IEC) and no comments received
from EPD. Noise measurement at NM1a & NM2a will be considered as free-field
and a correction of +3dB(A) would be made to the noise monitoring results.
Due to the adjustment of the location of NM1 & NM2 to
NM1a & NM2a, the measured noise levels at NM1 & NM2 would represent the
noise levels at NM1 & NM2.
Monitoring Station
|
Parameter
|
Frequency and
Duration
|
NM1a and NM2a |
LAeq (30mins) average of 6 consecutive Leq
(5min); L10 (5min) & L90 (5min) |
Once a week during normal construction working hour (0700-1900
Monday to Saturday) |
4.3.1
Integrating
Sound Level Meters (SLMs) was used for noise impact monitoring. The SLM
complied with International Electrotechnical Commission Publications 651:1979
(Type 1) and 804:1985 (Type 1) specifications shall be used for carrying out
noise monitoring. The accuracy of the SLM was checked using an acoustic
calibrator generating a known sound pressure level at a known frequency. Measurements shall be accepted as valid only
if the calibration level from prior to and after the noise measurement agrees
to within 1.0dB.
4.3.2
A portable
wind speed meter was used for measuring wind speeds in m/s.
4.3.3
Table 4-3
summarises the equipment that have been used in the impact noise monitoring
programme. The calibration certificates
are shown in Appendix E.
Equipment |
Model |
Expiry Date |
Sound Level Meter |
NTi XL2 (S/N: A2A-13661-E0) |
3 Sep 2024 |
Acoustic
Calibrator |
Rion NC-75
(S/N: 34724245) |
2 Aug 2024 |
Anemometer |
RS PRO RS-90
(S/N: 210722208) |
12 Feb 2025 |
4.4.1
The
details of noise measurement procedures are described as follows:
•
Free-field
measurements were made at the monitoring locations.
•
For free
field, the Sound Level Meter was set at a height of 1.2 m above the ground. The
battery condition was checked to ensure the proper functioning of the meter.
•
Parameters
such as frequency weighting, the time weighting and the measurement time were
set as follows:
•
Frequency
weighting: A
•
Time
weighting: Fast
•
Measurement
time: 5 minutes (Leq (30-min) would be determined for
daytime noise by calculating the logarithmic average of six Leq
(5min) data.)
•
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 recalibration
or repair of the equipment.
•
Noise
measurement should be paused during periods of high intrusive noise if possible
and observation shall be recorded when intrusive noise is not avoided.
•
At the end
of the monitoring period, the Leq, L10 and L90 shall
be recorded. In addition, site conditions and noise sources should be recorded
on a standard record sheet.
•
All noise monitoring will be
conducted with the wind speed not exceeding 5m/s and no gusts exceeding 10m/s.
Calibration & Maintenance
4.4.2
The sound
level meter, sound calibrator, and anemometer should be properly maintained to
ensure that the equipment and a continuous power supply were in good working
condition. The sound level meter and sound calibrator will be calibrated
annually. The anemometer will be calibrated two years interval in accordance
with the HOKLAS Supplementary Criteria No.2. Calibration certificate will be
provided after calibration.
4.4.3
The
microphone head of the sound level meter and calibrator should be cleaned with
a soft cloth at quarterly intervals.
4.5.1 The impact noise monitoring results are summarized in Table 4-4. The monitoring data together with graphical presentations are presented in Appendix F and Appendix G.
Month |
Average
Leq, 30min, dB(A) (Range) |
|
Noise Monitoring Station |
||
NM1a |
NM2a |
|
May 2024 |
60.6 (60.1 – 61.6) |
55.4 (48.1 – 57.4) |
Action Level |
When one documented
complaint is received |
|
Limit Level |
>75dB(A) |
(1)
* A correction of +3 dB(A) was made to the free field
measurements
(2)
If works are to be carried out during restricted hours, the
conditions stipulated in the construction noise permit issued by the Noise
Control Authority have to be followed.
4.5.2 No exceedance of Action and Limit Levels of construction noise was recorded during the reporting period. Therefore, there was no record of Notification of Environmental Quality Limits Exceedance in the Appendix H.
4.5.3 No particular observations are identified near the monitoring stations during the monitoring period.
4.5.4
The
Summary of Impact Noise Exceedance are shown in Table 4-5.
Noise
Monitoring Station |
NM1(a) |
NM2(a) |
|||
Level
Exceedance Parameters |
Action
Level |
Limit
Level |
Action
Level |
Limit
Level |
|
LAeq(30mins) |
Exceedance Date |
- |
- |
- |
- |
Exceedance Count |
0 |
0 |
0 |
0 |
Remarks: * equal to non-project related
4.5.5
No
exceedance of Action and Limit Levels of construction noise was recorded during
the reporting period. Therefore, there was no record of Notification of
Environmental Quality Limits Exceedance in the Appendix H.
4.6 Recommended Mitigation Measures
4.6.1 The recommended noise mitigation measures from EIA report are listed as followed:
1. Use of good site practices to limit noise emissions by considering the following:
• Only well-maintained plant should be operated on-site and plant should be serviced regularly during the construction programme;
• Machines and plant (such as trucks, cranes) that may be in intermittent use should be shut down between work periods or should be throttled down to a minimum;
• Plant known to emit noise strongly in one direction, where possible, be orientated so that the noise is directed away from nearby NSRs;
• Silencers or mufflers on construction equipment should be properly fitted and maintained during the construction works;
• Mobile plant should be sited as far away from NSRs as possible and practicable;
• Material stockpiles, mobile container site officer and other structures should be effectively utilised, where practicable, to screen noise from on-site construction activities.
2. Select “Quiet plants” which comply with the BS 5228 Part 1 or TM standards.
4.7.1 Should non-compliance of the criteria occurs, action in accordance with the action plan in Table 4-6 shall be carried out.
Table 4-6 Event and Action Plan for Construction
Noise Monitoring
Event |
ET |
IEC |
Contractor |
Exceedance of Action Level |
•
Identify source, investigate the causes of exceedance
•
Prepare Notification of Exceedance •
Inform IEC and Contractor •
Report the results of investigation to IEC, and Contractor •
Discuss with Contractor and IEC for formulate remedial measures •
Ensure remedial measures are properly implemented • Have additional monitoring if exceedance
is due to the Project. If exceedance stops, cease additional monitoring |
•
Verify the Notification of Exceedance •
Review the analysed results submitted by ET • Discuss with ET, and Contractor on the potential remedial actions •
Review the proposed remedial measures • Supervise the implementation of remedial
measures |
•
Submit noise mitigation proposals to IEC •
Implement the agreed noise mitigation proposals |
Exceedance
of Limit Level |
•
Identify
source, investigate the causes of exceedance •
Prepare
Notification of Exceedance •
Inform IEC and
Contractor •
Repeat
measurements to confirm findings •
Discuss with
Contractor and IEC for remedial measures •
Ensure remedial
measures are properly implemented •
Assess
effectiveness of Contractor’s remedial actions and keep IEC and EPD informed
of the results •
Have additional
monitoring if exceedance is due to the Project. If exceedance stops, cease
additional monitoring |
•
Verify the
Notification of Exceedance •
Review the
analysed results submitted by ET • Discuss
with ET, and Contractor on the potential remedial actions • Review the proposed remedial measures
• Supervise
the implementation of remedial measures |
• Take
immediate action to avoid further exceedance • Submit
proposals for remedial actions to IEC of notification • Implement
the agreed proposals • Resubmit
proposals if problem still not under control • Stop
the relevant portion of works as determined by project proponent until the
exceedance is abated. |
5.1.1.1
In
accordance with the EM&A manual, groundwater quality monitoring shall be
carried out at least once per month at the 35 designated groundwater monitoring
locations (i.e ED1 to ED35). Based on the existing
construction programme, site clearance and site formation works
for future landfilling area are in progress. The groundwater monitoring locations
ED1 to ED35 will be installed after the site formation work of the landfilling
area. No
groundwater monitoring is required before the completion of site formation work
of the landfilling area.
5.2.1.1
In
accordance with the EM&A manual, impact surface water quality monitoring
was carried out at the two designated surface water discharge points (i.e WM1 and WM2) for once per month from commencement of
construction works of the Project.
5.2.2 Monitoring Locations, Parameters and Frequency
5.2.2.1
Impact surface
water monitoring was carried out at WM1 and WM2. The monitoring locations are
indicated in Table 5-1 and Figure 2.
5.2.2.2
The
monitoring parameters, frequency and duration of surface water quality
monitoring are summarized in Table 5-2.
Detailed monitoring schedule is presented in Appendix D.
Table 5-1 Surface Water Quality Monitoring Locations
Monitoring Station
|
Location
|
Coordinates (HK Grid)
|
|
Easting
|
Northing
|
||
WM1 |
Upstream of Lin Ma Hang River |
836665 |
845020 |
WM2 |
Ping Yuen River |
835592 |
844186 |
Table 5-2 Surface Water Quality Monitoring Parameters,
Frequency and Duration
Parameter
|
Frequency
|
pH, Electrical conductivity, DO,
Turbidity, SS, Alkalinity, COD, BOD5, TOC, Ammonia-nitrogen, TKN,
Nitrate, Sulphate, Sulphite, Phosphate, Chloride, Sodium, Mg, Ca, K, Fe, Ni,
Zn, Mn, Cu, Pb, Cd, Coliform Count, Oil and Grease |
Once per month |
5.2.3.1
The
measurements of pH, electrical conductivity (EC), DO, turbidity, water
temperature and air temperature were undertaken in situ. In situ monitoring
instruments in compliance with the specifications listed under Section 5.5 of
the EM&A Manual were used to undertake the surface water quality monitoring
for the Project. Table 5-3 summarises
the equipment used in the impact surface water quality monitoring works. Copies
of the calibration certificates are attached in Appendix E.
Table 5-3 Surface
Water Quality Monitoring Equipment
Equipment |
Model |
Expiry Date |
Water Quality Meter |
YSI ProDSS (S/N: 15M101091) |
18 Jun 2024 |
Water Flow
Meter |
Global Water FP211 (S/N:
22K100859) |
24 Jan 2025 |
5.2.4 Summary of Surface Water Quality Monitoring Procedure
Operational/ Analytical Procedures
5.2.4.1
In general, water samples were collected from within 500
mm of the water surface. Water was
collected by a small clean open-mouthed bucket with the lip pointing
upstream. Usually, water was then
transferred to the sample bottles until they were filled to the top with no
remaining air space before the lid was securely screwed on. For samples that were preserved with acid or
alkalis prior to transport to the laboratory, the samples bottles were filled
to the level specified by the analytical laboratory.
5.2.4.2
Analyses
shall be carried out in accordance with methods described in ASTM or APHA
-AWWA-WEF Standard.
5.2.4.3
The
testing of parameters presented in Table 5-4 for all stations was
conducted by ALS Technichem (HK) Pty Ltd. (HOKLAS
Registration No. 066). Comprehensive quality assurance and control procedures
were in place in order to ensure quality and
consistency in results. The detection limits are provided in Table 5-4.
Table 5-4 Surface Water Monitoring Detection Limits and
Limit of Reporting
Parameters |
Detection Limit |
Limit of Reporting |
Method Reference |
pH |
0.1 |
0.1 |
APHA 4500 H+ B |
Electrical
conductivity |
1 mS/cm |
1 mS/cm |
APHA 2510 B |
Alkalinity |
1 mg/L |
1 mg/L |
APHA 2320 B |
COD |
10 mg/L |
5 mg/L |
APHA 5220 C |
BOD5 |
3 mg/L |
2 mg/L |
APHA 5210 B |
TOC |
1 mg/L |
1 mg/L |
APHA 5310 B |
SS |
0.1 mg/L |
0.1 mg/L |
APHA 2540 D |
Ammonia-nitrogen |
0.2 mg/L |
0.01 mg/L |
APHA 4500 NH3 G |
TKN |
0.4 mg/L |
0.1 mg/L |
APHA 4500Norg: D |
Nitrate |
0.5 mg/L |
0.01 mg/L |
APHA 4500 NO3 I |
Sulphate |
5 mg/L |
1 mg/L |
USEPA 375.4 |
Sulphite |
2 mg/L |
2 mg/L |
APHA 4500 SO3 B |
Phosphate |
0.01 mg/L |
0.01 mg/L |
APHA 4500-P B & F |
Chloride |
0.5 mg/L |
0.5 mg/L |
USEPA 325.1 |
Sodium |
50 mg/L |
50 mg/L |
USEPA 6010C |
Mg |
50 mg/L |
50 mg/L |
USEPA 6010C |
Ca |
50 mg/L |
50 mg/L |
USEPA 6010C |
K |
50 mg/L |
50 mg/L |
USEPA 6010C |
Fe |
50 mg/L |
10 mg/L |
USEPA 6010C |
Ni |
1 mg/L |
1 mg/L |
USEPA 6020A |
Zn |
10 mg/L |
10 mg/L |
USEPA 6020A |
Mn |
1 mg/L |
1 mg/L |
USEPA 6020A |
Cu |
1 mg/L |
1 mg/L |
USEPA 6020A |
Pb |
1 mg/L |
1 mg/L |
USEPA 6020A |
Cd |
0.2 mg/L |
0.2 mg/L |
USEPA 6020A |
Coliform
Count |
1 cfu/ 100mL |
1 cfu/ 100mL |
DoE section 7.8, 7.9.4.1
& 3 |
Oil and Grease |
5 mg/L |
5 mg/L |
APHA 5520 B |
5.2.4.4
All in
situ monitoring instruments were checked, calibrated
and certified by a laboratory accredited under HOKLAS or other international
accreditation scheme before use, and subsequently re-calibrated at the
intervals according to manufacturer’s requirement throughout all stages of the
surface water quality monitoring programme. Calibration
of temperature, DO, salinity, pH and turbidity is conducted in three-month interval. Calibration of
water flow is conducted annually. Responses of sensors and electrodes were
checked with certified standard solutions before each use. Calibration for a DO
meter was carried out before measurement according to the instruction manual of
the equipment model. For the on-site calibration of field equipment, the
requirements of the BS 1427:2018, "Guide to on-site test methods for the
analysis of waters" was observed.
5.2.4.5
Water
sampling equipment used during the course of the
monitoring programme was decontaminated by manual washing and rinsed with clean
distilled water after each sampling location.
Sampling Management and Supervision
5.2.4.6
All
sampling bottles were labelled with the sample ID (including the indication of
sampling station), laboratory number and sampling date. Water samples were
dispatched to the testing laboratory for analysis as soon as possible after the
sampling. All samples were stored in a cool box and kept at less than 4°C but
without frozen. All water samples were handled under chain of custody protocols
and relinquished to the laboratory representatives at locations specified by
the laboratory. The laboratory determination works started within 24 hours
after collection of water samples.
Quality Control Measures for Sample Testing
5.2.4.7
The
samples testing was performed by ALS Technichem (HK)
Pty Ltd. The following quality control programme was performed by the
laboratory:
·
One method blank; and
·
One sample duplicate.
5.2.5.1
Impact surface water quality monitoring was
conducted at WM1 and WM2 on 8 May 2024. No
adverse weather was observed during reporting period. The detailed monitoring
schedule is shown in Appendix D.
5.2.5.2
The summary of monitoring results is presented
in Table 5-5. Detailed monitoring results at each monitoring station and
graphical presentations of surface water quality (DO, SS and Turbidity) at the
monitoring stations are given in Appendix F and Appendix G.
5.2.5.3
No particular observations
are identified near the monitoring stations during the monitoring period.
Monitoring
Parameter(s) |
Monitoring Station |
|||||
WM1 |
WM2 |
|||||
Monitoring Results |
Action Level |
Limit Level |
Monitoring Results |
Action Level |
Limit Level |
|
pH |
6.9 |
>7.7 |
>7.8 |
6.9 |
>7.6 |
>7.7 |
DO in mg/L |
8.5 |
<7.4 |
<4 |
8.8 |
<5 |
<4 |
Turbidity in NTU |
7.1 |
>9.2 |
>9.5 |
17.1 |
>108.3 |
>108.9 |
Electrical Conductivity in μS/cm |
47 |
--- |
--- |
111 |
--- |
--- |
SS in mg/L |
2.9 |
>9.7 |
>11.4 |
13.8 |
>94.5 |
>94.7 |
Alkalinity in mg/L |
9 |
--- |
28 |
--- |
||
COD in mg/L |
9 |
6 |
||||
BOD5 in mg/L |
<2 |
<2 |
||||
TOC in mg/L |
2 |
1 |
||||
Ammonia-nitrogen in mg/L |
0.02 |
0.03 |
||||
TKN in mg/L |
0.3 |
0.2 |
||||
Nitrate in mg/L |
0.05 |
0.30 |
||||
Sulphate in mg/L |
3 |
24 |
||||
Sulphite in mg/L |
<2 |
<2 |
||||
Phosphorus in mg/L |
0.01 |
<0.01 |
||||
Chloride in mg/L |
6 |
5 |
||||
Sodium in µg/L |
6630 |
5190 |
||||
Magnesium in µg/L |
400 |
890 |
||||
Calcium in µg/L |
2440 |
16200 |
||||
Potassium in µg/L |
570 |
1980 |
||||
Iron in µg/L |
220 |
1030 |
||||
Nickel in µg/L |
<1 |
<1 |
||||
Zinc in µg/L |
<10 |
11 |
||||
Manganese in µg/L |
24 |
393 |
||||
Copper in µg/L |
2.0 |
1 |
||||
Lead in µg/L |
<1 |
2 |
||||
Cadmium in µg/L |
<0.2 |
<0.2 |
||||
Coliform Count
in cfu/100mL |
4400 |
2100 |
||||
Oil and Grease in mg/L |
<5 |
<5 |
5.2.5.4
The Summary of Impact Surface Water
Quality Exceedance are shown
in Table 5-6.
Surface Water Quality Monitoring
Station |
WM1 |
WM2 |
|||
Level
Exceedance Parameters |
Action
Level |
Limit
Level |
Action
Level |
Limit
Level |
|
pH |
Exceedance Date |
- |
- |
- |
- |
Exceedance Count |
0 |
0 |
0 |
0 |
|
DO |
Exceedance Date |
- |
- |
- |
- |
Exceedance Count |
0 |
0 |
0 |
0 |
|
Turbidity |
Exceedance Date |
- |
- |
- |
- |
Exceedance Count |
0 |
0 |
0 |
0 |
|
SS |
Exceedance Date |
- |
- |
- |
- |
Exceedance Count |
0 |
0 |
0 |
0 |
Remarks: * equal to non-project related
5.2.5.5
No exceedance of Action and Limit Level of
surface water quality at designated locations was recorded during the reporting
period. The Notification of Environmental Quality Limits Exceedance is
presented in Appendix H.
5.2.6 Recommended Mitigation Measure
5.2.6.1 The recommended surface water mitigation measures from EIA report are listed as followed:
• Channels (both temporary and permanent drainage pipes and culverts), earth bunds or sand bag barriers should be provided on site to direct stormwater to silt removal facilities.
• The overall slope of the site should be kept to a minimum to reduce the erosive potential of surface water flows.
• The design of efficient silt removal facilities should be based on the guidelines in Appendix A1 of ProPECC PN 1/94, which states that the retention time for silts and sediment traps should be 5 minutes under maximum flow conditions.
• All vehicles and plant should be cleaned before leaving a construction site to ensure no earth, mud, debris and the like is deposited by them on roads.
• Construction solid waste, debris and rubbish on site should be collected, handled and disposed of properly to avoid water quality impacts.
• Measures should be taken to prevent the washing away of construction materials, soil, silt or debris into any drainage system.
5.2.7 Implementation of the Temporary Surface Water Drainage System (TSWDS)
5.2.7.1 The site inspection and audits were carried out by ER, IC, ET & Contractor on weekly basis (IEC on monthly basis) to monitor the construction progress, maintenance performance and effectiveness of temporary surface water drainage system in the Project Site to fulfil the FEP Condition 2.13, EP Condition 2.15 and the Section 5.2.1.1 of the EM&A Manual. The joint environmental site inspection records are shown in Appendix K.
5.2.7.2 All construction site runoff would be treated by silt removal facilities to fulfil the requirement of WPCO licenses from the project. Construction site runoff from the project after treatment was discharged to Ping Yuen River. The surface water monitoring results at WM2 (after the discharge point of silt removal facilities) can reflect the water quality at Ping Yuen River during the reporting period.
5.2.8.1
Should non-compliance of the criteria occurs, action in accordance with the action plan in Table
5-7 shall be carried out.
Table 5-7 Event and Action Plan for Water Quality
Event |
ET |
IEC |
Contractor |
Action level being exceeded by one sampling day |
• Repeat in situ measurement to confirm findings • Identify source(s) of impact • Prepare Notification of Exceedance • Inform IEC and Contractor • Check monitoring data, all plant,
equipment and Contractor’s working methods • Repeat measurement on next day of
exceedance |
• Verify Notification of Exceedance •
Check monitoring
data and Contractor’s working methods |
•
Rectify
unacceptable practice •
Amend working
methods if appropriate |
Action level being exceeded by two or
more consecutive sampling days |
•
Repeat in situ
measurement to confirm findings • Identify
source(s) of impact •
Prepare
Notification of Exceedance • Inform
IEC and Contractor •
Check
monitoring data, all plant, equipment and Contractor’s working methods • Discuss
with Contractor and IEC for remedial measures • Ensure
mitigation measures are implemented • Increase
the monitoring frequency to daily until no exceedance of Action level • Repeat measurement on next day of exceedance |
•
Verify Notification of
Exceedance • Check
monitoring data and Contractor's working method • Discuss
with ET and Contractor on possible remedial actions • Review
the proposed mitigation measures • Supervise
the implementation of mitigation measures |
• Submit
proposal of additional mitigation measures to IEC of notification • Implement
the agreed mitigation measures • Amend
proposal if appropriate |
Event |
ET |
IEC |
Contractor |
Limit Level being exceeded by one sampling day |
• Repeat in situ measurement to confirm findings •
Identify
source(s) of impact • Prepare Notification of Exceedance •
Inform IEC and Contractor; •
Check monitoring
data, all plant, equipment and Contractor's working methods •
Discuss
mitigation measures with IEC and Contractor • Ensure mitigation measure are implemented |
• Verify Notification of Exceedance •
Check monitoring
data submitted By ET and Contractor’s working method •
Discuss with ET
and Contractor on possible remedial actions •
Review the
proposed mitigation measures •
Supervise the
implementation of mitigation measures |
•
Critically review
the working method •
Rectify
unacceptable practice •
Take immediate
corrective actions to avoid further exceedance •
Submit proposal
of mitigation measures to IEC •
Implement the
agreed mitigation measures •
|
Limit level being exceeded by two or
more consecutive sampling days |
•
Repeat in situ
measurement to confirm findings • Identify
source(s) of impact •
Prepare
Notification of Exceedance • Inform
IEC, contractor and EPD • Check
monitoring data, all plant, equipment and Contractor's working methods • Discuss
mitigation measures with IEC and Contractor • Ensure
mitigation measure are implemented |
•
Verify Notification of
Exceedance • Check
monitoring data submitted by ET and Contractor’s working method • Discuss
with ET and Contractor on possible remedial actions • Review
the proposed mitigation measures • Supervise
the implementation of mitigation measures |
• Critically
review the working method • Rectify
unacceptable practice • Take
immediate corrective actions to avoid further exceedance • Submit
proposal of mitigation measures to IEC • Implement
the agreed mitigation measures • Resubmit
proposals if problem still not under control • Slow
down or to stop relevant activity until exceedance is abated |
6.1.1
Wastes generated from this Project include
inert construction and demolition (C&D) materials and non-inert C&D
materials. Non-inert C&D materials were made up of general refuse, steels and paper/cardboard packaging materials. Steel
materials generated from the Project were also grouped into non-inert C&D
materials as the materials were not disposed of with other inert C&D
materials. With reference to relevant handling records and trip tickets of this
Project, the quantities of different types of waste
generated in the reporting month are summarised in Appendix J.
6.1.2
A total of 1,396.88 tonnes of C&D materials was
reused in the project site. A total of 42,809 tonnes of C&D materials was reused at
alternative disposal ground (NENT Landfill) during the reporting period. A
total of 1,022.68 tonnes of C&D materials was imported fill
during the reporting period. No Yard waste (collected to Y-Park) was generated
during the reporting period. A total of 90.72 tonnes of general refuse and A total of 110.1 tonnes of non-recyclable yard waste was
generated during the reporting period. The general refuse generated from the
Project were disposed of at the NENT Landfill.
6.1.3
The recommended waste management mitigation
measures from EIA report are listed as followed:
•
Implement a trip-ticket system to ensure
that the movement of C&D materials are properly documented and verified in
accordance with DEVB TC(W) No. 6/2010.
• Concrete and masonry should be used as general fill and steel reinforcement bars can be used by scrap steel mills.
• Proper areas should be designated for waste segregation and storage wherever site conditions permit.
• Maximise the use of reusable steel formwork to reduce the amount of C&D material.
• Maintain temporary stockpiles and reuse excavated fill material for backfilling and reinstatement.
• On-site sorting and segregation facility of all type of wastes is considered as one of the best practice in waste management and hence, should be implemented in all projects generating construction waste.
• The sorted public fill and C&D waste should be properly reused.
• Excavated slope, stockpiled material and bund walls should be covered by tarpaulin until used in order to prevent wind-blown dust during dry weather, and to reduce muddy runoff during wet weather.
7.1 Monitoring Requirement during Construction
Monitoring for Construction
Works
7.1.1
Intrinsically safe portable gas detectors should
be used during or when working in any confined spaces, which have the potential
for presence of LFG and risk of explosion or asphyxiation. The
monitoring equipment should alarm, both audibly and visually, when the
concentrations of the following gases were exceeded:
· CH4: >10% Lower Explosion Limit (LEL);
· CO2: >0.5%; and
· O2: <18% by volume.
7.2.1
During the
construction works within the NENT Landfill Extension site with excavation of
1m deep or more, LFG concentrations should be monitored before entry and
periodically during the progress of works. If drilling is required,
the procedures for safety management and working procedures as stipulated in
EPD’s Landfill Gas Hazard Assessment – Guidance Note should be strictly
adopted.
7.2.2
The monitoring frequency and areas to be monitored should be set down
prior to commencement of groundworks by the Safety Officer. All measurements in
excavations should be made with the monitoring tube located not more than 10mm
from the exposed ground surface. Monitoring of excavations should be undertaken
as follows:
7.2.3
For excavation works deeper than 1m, measurements should be made:
•
at ground surface prior to excavation;
•
immediately before any worker enters the excavation;
•
at the beginning of each working day for the entire period the excavation
remains open; and
•
periodically through the working day whilst workers are in the
excavation.
7.2.4
For excavation between 300mm and 1m deep, measurements should be made:
•
directly after the excavation has been completed; and
•
periodically whilst the excavation remains open.
7.2.5
For excavations less than 300mm deep, monitoring may be omitted, at the
discretion of the Safety Officer.
7.2.6
The locations of LFG monitoring
locations during reporting period are shown in Table 7-1. The Site formation
layout plan is shown in Figure 2 and the Layout of LFG monitoring locations is presented in Figure 3.
Table 7-1 Locations of LFG Monitoring during Reporting
Period
Monitoring Location |
Type of
works |
Portion A +50 mpD
to 70 mpD Platform |
Excavation Works |
Portion
B2/E1 |
7.3.1.1
Gas Detector was used for
carrying out LFG monitoring for Construction
Works. Table 7-2 summarises the equipment that
were used in the LFG monitoring programme.
The calibration certificates are shown in Appendix E. The detection limits are provided in Table
7-3.
Table 7-2 LFG Monitoring Equipment
Monitoring
Parameters |
Equipment |
Model |
Expiry Date |
CH4, CO2 & O2 |
Gas Analyser |
GEM5000 (S/N: G505207) |
30 Aug 2024 |
Table 7-3 Landfill Gas Monitoring Detection
Limits
Parameters |
Detection Limit |
CH4 |
1% LEL |
O2 |
0.1% |
CO2 |
0.1% |
7.4 Event and Action Plan (EAP)
7.4.1 Should non-compliance of the criteria occur, action in accordance with the action plan in Table 7-4 shall be carried out.
Table 7-4 Event
and Action Plan for the Landfill Gas Monitoring during Construction Phase
Parameter |
Monitoring Result |
Action |
Oxygen (O2) |
Action Level <19% O2 |
Ventilate trench/void to restore O2
to >19% |
Limit Level <18% O2 |
Stop works Evacuate personnel/prohibit entry Increase ventilation to restore O2 to
>19% |
|
Methane (CH4) |
Action Level >10% LEL* |
Prohibit hot works Increase ventilation to restore CH4
to <10% LEL |
Limit Level >20% LEL* |
Stop works Evacuate personnel/prohibit entry Increase ventilation to restore CH4 to
<10% LEL |
|
Carbon dioxide (CO2) |
Action Level** >0.5%** CO2 |
Ventilate to restore CO2 to
<0.5% |
Limit Level >1.5% CO2 |
Stop works Evacuate personnel / prohibit entry Increase ventilation to restore CO2 to
<0.5% |
** This Action Level of CO2 at 0.5% is set for
reference only, assuming no CO2 emission from a particular location.
Depending on the baseline CO2 levels, the Action
Level at a particular location will be changed.
7.5.1 The LFG monitoring was carried out two rounds (at the beginning of works in the morning and after lunch) at the working days. The monitoring period of each round of LFG monitoring is around 5 minutes.
7.5.2 The LFG monitoring was conducted at Portion A +50 mpD to 70 mpD Platform and Portion B2/E1 during the reporting period (Conducted on working days). The LFG monitoring results are summarized in Table 7-5 & Table 7-6.
Table 7-5 Summary of LFG Monitoring Results
LFG Monitoring Station |
Monitoring Date |
Monitoring Parameter(s) |
|||
CH4 in % |
LEL in %/v |
CO2 in % |
O2 in % |
||
Average Monitoring Results |
|||||
Portion A +50 mpD to 70 mpD Platform |
2 May 2024 |
0 |
0 |
0 |
20.0 |
3 May 2024 |
0 |
0 |
0 |
20.1 |
|
4 May 2024 |
0 |
0 |
0 |
20.1 |
|
6 May 2024 |
0 |
0 |
0 |
20.1 |
|
7 May 2024 |
0 |
0 |
0 |
20.2 |
|
8 May 2024 |
0 |
0 |
0 |
20.2 |
|
9 May 2024 |
0 |
0 |
0 |
20.1 |
|
10 May 2024 |
0 |
0 |
0 |
20.1 |
|
11 May 2024 |
0 |
0 |
0 |
20.1 |
|
13 May 2024 |
0 |
0 |
0 |
20.1 |
|
14 May 2024 |
0 |
0 |
0 |
20.1 |
|
16 May 2024 |
0 |
0 |
0 |
20.1 |
|
17 May 2024 |
0 |
0 |
0 |
20.0 |
|
18 May 2024 |
0 |
0 |
0 |
20.1 |
|
20 May 2024 |
0 |
0 |
0 |
20.1 |
|
21 May 2024 |
0 |
0 |
0 |
20.1 |
|
22 May 2024 |
0 |
0 |
0 |
20.1 |
|
23 May 2024 |
0 |
0 |
0 |
20.0 |
|
24 May 2024 |
0 |
0 |
0 |
20.1 |
|
25 May 2024 |
0 |
0 |
0 |
20.0 |
|
27 May 2024 |
0 |
0 |
0 |
20.1 |
|
28 May 2024 |
0 |
0 |
0 |
20.1 |
|
29 May 2024 |
0 |
0 |
0 |
20.1 |
|
Action Level |
>10% LEL |
--- |
>0.5%** CO2 |
<19% |
|
Limit Level |
>20% LEL |
--- |
>1.5% CO2 |
<18% |
* LEL: Lower Explosive
Limit - concentrations in air below which there is not enough fuel to continue
an explosion.
** This Limit Level of CO2
at 0.5% is set for reference only, assuming no CO2 emission from a
particular location.
Table 7-6 Summary of LFG
Monitoring Results
LFG Monitoring Station |
Monitoring Date |
Monitoring Parameter(s) |
|||
CH4 in % |
LEL in %/v |
CO2 in % |
O2 in % |
||
Average Monitoring Results |
|||||
Portion B2/E1 |
2 May 2024 |
0 |
0 |
0 |
20.0 |
3 May 2024 |
0 |
0 |
0 |
20.1 |
|
4 May 2024 |
0 |
0 |
0 |
20.1 |
|
6 May 2024 |
0 |
0 |
0 |
20.1 |
|
7 May 2024 |
0 |
0 |
0 |
20.2 |
|
8 May 2024 |
0 |
0 |
0 |
20.2 |
|
9 May 2024 |
0 |
0 |
0 |
20.1 |
|
10 May 2024 |
0 |
0 |
0 |
20.1 |
|
11 May 2024 |
0 |
0 |
0 |
20.1 |
|
13 May 2024 |
0 |
0 |
0 |
20.1 |
|
14 May 2024 |
0 |
0 |
0 |
20.1 |
|
16 May 2024 |
0 |
0 |
0 |
20.1 |
|
17 May 2024 |
0 |
0 |
0 |
20.0 |
|
18 May 2024 |
0 |
0 |
0 |
20.1 |
|
20 May 2024 |
0 |
0 |
0 |
20.1 |
|
21 May 2024 |
0 |
0 |
0 |
20.1 |
|
22 May 2024 |
0 |
0 |
0 |
20.1 |
|
23 May 2024 |
0 |
0 |
0 |
20.0 |
|
24 May 2024 |
0 |
0 |
0 |
20.1 |
|
25 May 2024 |
0 |
0 |
0 |
20.0 |
|
27 May 2024 |
0 |
0 |
0 |
20.1 |
|
28 May 2024 |
0 |
0 |
0 |
20.1 |
|
29 May 2024 |
0 |
0 |
0 |
20.1 |
|
Action Level |
>10% LEL |
--- |
>0.5%** CO2 |
<19% |
|
Limit Level |
>20% LEL |
--- |
>1.5% CO2 |
<18% |
* LEL: Lower Explosive
Limit - concentrations in air below which there is not enough fuel to continue
an explosion.
** This Limit Level of CO2
at 0.5% is set for reference only, assuming no CO2 emission from a
particular location.
7.5.3
The Summary of Landfill Gas Exceedance are
shown in Table 7-7.
Landfill Gas Monitoring Station |
Portion A +50 mpD to 70 mpD Platform |
Portion B2/E1 |
|||
Level Exceedance Parameters |
Action Level |
Limit Level |
Action Level |
Limit Level |
|
CH4 |
Exceedance Date |
- |
- |
- |
- |
Exceedance
Count |
0 |
0 |
0 |
0 |
|
CO2 |
Exceedance Date |
- |
- |
- |
- |
Exceedance
Count |
0 |
0 |
0 |
0 |
|
O2 |
Exceedance Date |
- |
- |
- |
- |
Exceedance
Count |
0 |
0 |
0 |
0 |
Remarks: * equal to non-project related
7.5.4 No exceedance of Action and Limit Levels of LFG was recorded during the reporting period. Therefore, there was no record of Notification of Environmental Quality Limits Exceedance in the Appendix H.
7.5.5 No effect that arose from the other special phenomena and work progress of the concerned site was noted during the current monitoring month.
7.6 Recommended Mitigation Measures
7.6.1 The recommended landfill gas mitigation measures from EIA report are listed as followed:
• Special LFG precautions should be taken due to close proximity of NENT landfill extension site to existing landfill to avoid potential hazards of LFG exposure (ignition, explosion, asphyxiation, toxicity).
• Prominent safety warning signs should be erected on-site to alert all personnel and visitors of LFG hazards during excavation works.
• No smoking or burning should be permitted on-site.
• Prominent 'No smoking' and ‘No Naked Flames’ signs should be erected on-site.
• No worker should be allowed to work alone at any time in excavated trenches or confined areas on-site.
• Adequate fire fighting equipment should be provided on-site.
• Construction equipment should be equipped with vertical exhaust at least 0.6m above ground installed with spark arrestors.
• Electrical motors and extension cords should be explosion-proof and intrinsically safe for use on-site.
• ’Permit to Work' system should be implemented.
• Welding, flame-cutting or other hot works should be conducted only under ‘Permit to Work’ system following clear safety requirements, gas monitoring procedures and presence of qualified persons to supervise the works.
8.1.1
In order
to monitor the landscape and visual impact after
providing mitigation measures effectively, all the specified and affected LCAs,
LRs and VSRs should be monitored. Implementation of the mitigation measures
during construction phase of the Project has been monitored through the regular
site inspection/audit.
8.1.2
All
relevant environmental mitigation measures listed in the approved EIA Report
and the EM&A Manual and their implementation status are summarised in Appendix L.
8.2.1
Measures to mitigate the landscape and visual
impacts during the construction phase has been checked to ensure compliance
with the intended aims of the measures within the reporting period. The
progress of the engineering works are regularly
reviewed on site to identify the earliest practical opportunities for the
landscape works to be undertaken.
8.2.2
In order
to monitor the landscape and visual impact after
providing mitigation measures effectively, all the specified and affected LCAs,
LRs and VSRs should be monitored. Implementation of the mitigation measures
during construction phase of the Project has been monitored through the regular
site inspection/audit.
9.1.1
The Mitigation measures for
preservation of the cultural landscape feature located within the project area
was conducted before commencement of construction of the project based on the
requirement of Survey Report and Mapping Records for Boulder Paths BP1 & 2
& Conditions of G2, G4, G5 G6, G7, G8, G14, G15, G25, G26 and G27 within
NENTX.
9.1.2
The survey and mapping works carried out on 23 August
2022 and the
verification works carried out on 23 August 2022 confirmed that both 2 boulder
paths BP1 and BP2 are fall
outside the site boundary and the Project area.
9.1.3
All the affected graves within the waste
boundary have
been removed in accordance with section 119(1) of the Public Health and
Municipal Services Ordinance
(Cap 132). Removal of the graves as shown on Figure 2 attached to the FEP was proven
by the visit of graves on 8 July
2022. All the graves as shown on Figure 2 attached to the
FEP were abandoned and removed and no mitigation or preservation measures is
necessary.
9.1.4
The Survey Report and Mapping Records for Boulder
Paths BP1 & 2 was certified by ET on 10 Oct 2022, was verified by IEC and
submitted to EPD on 12 Oct 2022. The Conditions of G2, G4, G5 G6, G7, G8, G14,
G15, G25, G26 and G27 within NENTX was certified by ET, was verified by IEC and submitted to EPD on 15 Oct 2022. No later than four
weeks before commencement of construction of the project in accordance with
Condition 2.4 of the FEP-01/292/2007.
9.1.5
Implementation of the mitigation measures such
as permanent fencing to protect the boulder path and setting up warning notices
during construction phase of the Project has been monitored through the regular
site inspection/audit. The permanent fencing locations are shown in Appendix
M. In case of any presence of undiscovered grave during
construction phase, AMO will be informed as soon as possible.
10.1.1
The post-transplantation
monitoring had been completed in October 2023. No further post-transplantation monitoring will be conducted in
accordance with the requirement of the approved Transplantation Proposal for Plant Species of Conservation
Importance (Rev.1).
10.1.2
The post-translocation monitoring had been
completed in July 2023. No further post-translocation monitoring will be
conducted in accordance with the requirements of the Revised Translocation
Proposal for the Endemic Freshwater Crab Somanniathelphusa
zanklon.
10.1.3
The details of requirements, monitoring results
and site inspection with photos for the post-translocation monitoring and
post-transplantation monitoring would be reported separately.
10.1.4
The milestone of the ecological monitoring is
presented in Table 10-1. The softcopies of the submissions are
provided in https://www.nentx-ema.com/ep-submissions/.
Table 10-1 Milestone of the Ecological Monitoring
Type of Monitoring |
Monitoring Event No. |
Monitoring
Date |
Post-transplantation Monitoring |
1st |
24 Nov 2022 |
2nd |
9
Dec 2022 |
|
3rd |
21 Dec 2022 |
|
4th |
13
Jan 2023 |
|
5th |
26 Jan 2023 |
|
6th |
8 Feb 2023 |
|
7th |
24 Feb 2023 |
|
8th |
20 Mar 2023 |
|
9th |
21 Apr 2023 |
|
10th |
12 May 2023 |
|
11th |
16 Jun 2023 |
|
12th |
18 Jul 2023 |
|
13th |
11 Aug 2023 |
|
14th |
15 Sep 2023 |
|
15 th |
13 Oct 2023 |
|
Post-translocation
Monitoring |
1st
(Aug 2022) |
29
Aug 2022 |
2nd (Sep
2022) |
28 Sep 2022 |
|
3rd
(Oct 2022) |
28
Oct 2022 |
|
4th (Nov
2022) |
22 Nov 2022 |
|
5th
(Dec 2022) |
29
Dec 2022 |
|
6th (Jan
2023) |
30 Jan 2023 |
|
7th
(Feb 2023) |
24 Feb 2023 |
|
8th (Mar
2023) |
20 Mar 2023 |
|
9th
(Apr 2023) |
19 Apr 2023 |
|
10th (May
2023) |
17 May 2023 |
|
11th
(Jun 2023) |
7 Jun 2023 |
|
12th (Jul
2023) |
12 Jul 2023 |
11 Site Inspection and Audit
11.1.2
Weekly ET environmental site inspections were
conducted in the reporting period on 06, 13, 20 & 27 May 2024. A
joint environmental site inspection was carried out by the representatives of
the ER, the Contractor, IEC and the ET on 20 May 2024. The joint environmental site inspection
records are shown in Appendix K. There was no noncompliance recorded during
the site inspections.
11.1.3 Major
findings and recommendations are summarized as follows:
06 May 2024
Reminder(s):
• The Contractor was reminded that the precaution shall be taken with Appendix A2 of ProPECC PN 1/94 before, during and after rainstorm.
13 May 2024
Observation(s):
• The activity of
handing of bulk cement or dry PFA shall be carried out at a totally enclosed
system or facility at Portion B2-E1.
The Contractor was advised that the activity of handing of bulk cement or dry
PFA carried out in a totally enclosed system or facility or placed in an area
sheltered on the top and 3 sides to prevent dust dispersion.
• General waste and
C&D waste on the floor was observed at
Portion A and D. The Contractor was reminded to provide
and arrange sufficient waste skip and enclosed bins for waste collection and
storage at Portion A and D.
Reminder(s):
• The Contractor was reminded that the precaution shall be
taken with Appendix A2 of ProPECC PN 1/94 before,
during and after rainstorm.
• The Contractor was reminded that the exposed slope surfaces at Portion B2-E1 should be
covered by tarpaulin.
20 May 2024
Observation(s):
• Rubbish bins shall
be covered and enclosed, and the waste skip shall be placed and designed in a
flat area at Portion A. The Contractor was reminded that rubbish
bin for general waste collection should be covered and enclosed, and the waste
skip for C&D waste collection and storage should be placed properly in the
flat area to prevent water stagnation at Portion A.
• Oil
drum and chemical container at Portion A without the drip tray and chemical
label in chinses and English was observed. The Contractor was recommended to
provide chemical drip trays for chemical storage at Portion A to prevent
chemical leakage and land contamination, and to provide chemical labels in
Chinese and English.
Reminder(s):
• The Contractor was reminded that the precaution shall be
taken with Appendix A2 of ProPECC PN 1/94 before,
during and after rainstorm.
• The Contractor was reminded that the exposed slope surface at Portion A should be
covered with green netting after the excavation activity in
order to reduce visual impact.
27 May 2024
Observation(s):
• Working area at Portion E3 is dry and fugitive dust was observed. The Contractor was reminded to arrange
for watering regularly at the work sites of Portion E3 to ensure the work sites
are wetted and to prevent dust dispersion.
• The generator at Portion B2-E1 without NRMM label was observed. The Contractor was recommended that NRMM
label should be fixed and displayed on the generator at Portion B2-E1.
• The general waste at Portion E4 shall be collected and
stored in the enclosed rubbish bin. The
Contractor was reminded to provide sufficient enclosed rubbish bin for general
waste collection and storage at Portion E4.
• The chemical container without drip tray was observed at Portion B2-E1.
The Contractor was reminded that the chemical container should be placed in the
drip tray properly at Portion B2-E1to prevent chemical leakage and land
contamination.
Reminder(s):
• The Contractor was reminded that the precaution shall be
taken with Appendix A2 of ProPECC PN 1/94 before,
during and after rainstorm.
• The Contractor was reminded that the temporary drainage system e.g. channel and earth
bund should be provided and protected properly at Portion E4 to direct
stormwater to slit removal facility.
11.1.4
One site inspection on 30 May 2024 was conducted by
Environmental Protection Department-Regional
Office (North) (EPD-RNG) during reporting period.
12 Environmental Non-Conformance
12.1 Summary of Monitoring Exceedance
Air Quality, Noise, Surface Water Quality
Monitoring & Landfill Gas Monitoring
12.1.1
No exceedance of the Action and Limit Levels
were recorded at designated monitoring stations during the reporting period. The Notification of Environmental Quality Limits
Exceedance is presented in Appendix H.
12.1.2 The Summary of Impact 1-hr & 24-hr TSP Exceedance are shown in Table 12-1.
Dust
Monitoring Station |
AM1 |
AM2 |
AM3 |
||||
Level
Exceedance Parameters |
Action
Level |
Limit
Level |
Action
Level |
Limit
Level |
Action
Level |
Limit
Level |
|
1-hr TSP |
Exceedance Date |
- |
- |
- |
- |
- |
- |
Exceedance Count |
0 |
0 |
0 |
0 |
0 |
0 |
|
24-hr TSP |
Exceedance Date |
- |
- |
- |
- |
- |
- |
Exceedance Count |
0 |
0 |
0 |
0 |
0 |
0 |
Remarks: * equal
to non-project related
12.1.3 The Summary of Impact Noise Exceedance are shown in Table 12-2.
Noise
Monitoring Station |
NM1(a) |
NM2(a) |
|||
Level
Exceedance Parameters |
Action
Level |
Limit
Level |
Action
Level |
Limit
Level |
|
LAeq(30mins) |
Exceedance Date |
- |
- |
- |
- |
Exceedance Count |
0 |
0 |
0 |
0 |
Remarks: * equal to non-project related
12.1.4
The Summary of Impact Surface Water Quality
Exceedance are shown in Table 12-3.
Surface
Water Quality Monitoring Station |
WM1 |
WM2 |
|||
Level
Exceedance Parameters |
Action
Level |
Limit
Level |
Action
Level |
Limit
Level |
|
pH |
Exceedance Date |
- |
- |
- |
- |
Exceedance Count |
0 |
0 |
0 |
0 |
|
DO |
Exceedance Date |
- |
- |
- |
- |
Exceedance Count |
0 |
0 |
0 |
0 |
|
Turbidity |
Exceedance Date |
- |
- |
- |
- |
Exceedance Count |
0 |
0 |
0 |
0 |
|
SS |
Exceedance Date |
- |
- |
- |
- |
Exceedance Count |
0 |
0 |
0 |
0 |
Remarks: * equal to non-project related
12.1.5 The Summary of Landfill Gas Exceedance are shown in Table 12-4.
Portion A +50 mpD to 70 mpD Platform |
Portion
B2/E1 |
||||
Level
Exceedance Parameters |
Action
Level |
Limit
Level |
Action
Level |
Limit
Level |
|
CH4 |
Exceedance Date |
- |
- |
- |
- |
Exceedance Count |
0 |
0 |
0 |
0 |
|
CO2 |
Exceedance Date |
- |
- |
- |
- |
Exceedance Count |
0 |
0 |
0 |
0 |
|
O2 |
Exceedance Date |
- |
- |
- |
- |
Exceedance Count |
0 |
0 |
0 |
0 |
Remarks: * equal to non-project related
12.2 Summary of Environmental Non-Compliance
12.2.1
No non-compliance event was recorded during the
reporting period.
12.3 Summary of Environmental Complaint
12.3.1
One complaint on 9 May 2024 was recorded during the
reporting period. The related complaint is investigating by related parties in
accordance with the requirement of EM&A Manual.
Environmental Complaint on 9 May 2024
12.3.2
The complaint about the water aspect was
received by ET on 9 May 2024 at 09:24 via EPD-RNG email. The main content of the
complaint mentioned EPD receipted a memo from DSD/Mainland North regarding the
incident of muddy water observed in Ping Yuen River, at the downstream of
NENTX, on 23 April 2024. The related investigation results will be
presented when the investigation was finished.
12.3.3
The cumulative statistics on environmental
complaints are presented in Table 12-5.
Table 12-5 Cumulative
Statistics on Environmental Complaints
Reporting Period |
Environmental Aspects |
|||||
Air
Quality |
Noise
|
Water
Quality |
Waste |
Ecology |
||
May 2024 |
Complaint Date |
- |
- |
9 May 2024 |
- |
- |
No. of Complaint |
0 |
0 |
1 |
0 |
0 |
|
Reporting Period Total |
0 |
0 |
1# |
0 |
0 |
|
Accumulate of project |
1* |
0 |
6(1* & 1#) |
0 |
0 |
Remarks:
1. * equal to non-project
related after the investigation.
2. # equal to the
complaint under the investigation.
12.3.4
Cumulative complaint / enquiry log, Summaries
of complaints and enquiries are presented in Appendix N.
12.4 Summary of Environmental Summons and Successful Prosecution
12.4.1
No summons and successful prosecution were
received during the reporting period.
13 Implementation Status on Environmental Mitigation Measures
13.1 General
13.1.1 The
Contractor has generally implemented part of environmental mitigation measures
and requirements as stated in the EIA Report, the EP and EM&A Manual and
the contract documents. The implementation status during the reporting period
is summarized in Appendix L.
14.1
Key Issues for the Coming
Month
-
Material
loading and unloading, site traffic at Portion A, SBA to alternative disposal
ground |
-
Construction
of site buildings at Portion D |
-
Site
clearance at Portion A, B2/E1, E3-1 & E4 |
-
Installation of permanent fencing at Portion A,
B1 & E4 |
-
Site
formation at Portion A & E3-1 |
-
Tree
felling at Portion B2/E1, E3-1 & E4 |
-
Shotcreting (Permanent and
Temporary) |
-
Soil Nail Installation at Portion A, B2/E1 &
E4 |
14.2
Monitoring Schedule for
the Next Month
14.3
Construction Programme
for the Next Month
15.1.1
1-hr & 24-hr TSP impact monitoring was
carried out in the reporting month. No Action / Limit Level exceedance for
1-hr & 24-hr TSP impact monitoring was recorded during the period.
15.1.2
Construction noise monitoring was carried
out in the reporting month. No Action / Limit Level exceedance at NM1a & NM2a
was recorded during the period.
15.1.3
Site clearance of future landfilling area
is in progress. The installation of groundwater monitoring boreholes will be
installed after the site formation work of the landfilling area. The target
commencement period of groundwater monitoring will be in 2026. No groundwater
monitoring is required before the completion of site formation work of the
landfilling area.
15.1.4
Surface Water Quality Monitoring was carried
out in the reporting month. No Action / Limit Level exceedance of surface water
quality was recorded during the reporting period.
15.1.5
Landfill Gas
Monitoring was carried out in the reporting month. No exceedance of Action / Limit Levels of
LFG was recorded during the reporting period.
15.1.6
In terms of
cultural heritage, implementation of the mitigation measures such as permanent
fencing to protect the boulder path and setting up warning notices during
construction phase of the Project has been monitored through the regular site
inspection/audit in the reporting period. All the mitigation measures are in
order.
15.1.7
Four environmental site inspections were
carried out in the reporting month. Recommendations on mitigation measures for
Permit/ Licenses were given to the Contractor for remediating the deficiencies
identified during the site inspections.
15.1.8
One complaint
was recorded during the reporting period. The related complaint is
investigating by related parties in accordance with the requirement of EM&A
Manual. The related investigation results will be presented when the
investigation was finished.
15.1.9 No non-compliance event was recorded during the reporting period.
15.1.10
No notification of summons and prosecution
was received during the reporting period.
15.1.11
The ET will keep track on the EM&A
programme to ensure compliance of environmental requirements and the proper implementation
of all necessary mitigation measures.