Agreement No. CE 20/2004(EP) North East
New Territories (NENT) Landfill Extension Quarterly Environmental Monitoring and Audit
Report (No. 3) – July to September 2023 |
Contents
12 Environmental Non-conformance
13 Implementation Status on Environmental Mitigation
Measures
Figure
Location of the Project Site |
|
Impact Monitoring Locations |
|
Landfill Gas Monitoring Locations |
Appendix
Construction Programme |
|
Construction Site Activities |
|
Project Organization Chart & Management Structure |
|
Detail Status of FEP & EP Submission |
|
Graphical Presentations |
|
Notification of Environmental Quality Limits Exceedance |
|
Waste Flow Table |
|
Environmental Mitigation Implementation Schedule (EMIS) |
|
Mitigation Measures of Cultural Landscape Features |
|
Cumulative complaint / enquiry log, Summaries of complaints and enquiries & Environmental complaint reports |
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
3rd Quarterly EM&A Report presents the EM&A works conducted
from 1 July to 30 September 2023 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:
Reporting Month |
|||
Jul 2023 |
Aug 2023 |
Sep 2023 |
|
-
Material
loading and unloading, site traffic |
✓ |
✓ |
✓ |
-
Permanent site office foundation
works with pouring of concrete |
✓ |
✓ |
|
- Construction of site buildings |
|
|
✓ |
- Site clearance |
✓ |
✓ |
✓ |
- Installation
of permanent fencing |
✓ |
✓ |
✓ |
- Site formation |
✓ |
✓ |
✓ |
- Tree felling |
✓ |
✓ |
✓ |
Shotcreting
(Permanent and Temporary) |
|
|
✓ |
Environmental
Exceedance
Air Quality, Noise & Landfill Gas
Monitoring
No exceedance of the Action and Limit
Levels were recorded at designated monitoring stations during the reporting
period.
Surface Water Quality Monitoring
No exceedance of the Action and Levels was
recorded at designated monitoring stations in July 2023. One DO exceedance of the Action Level was
recorded at Surface Water Quality Monitoring (WQM) Location WM1 in August 2023.
No exceedance of the Limit Level was recorded at Surface WQM Location WM1 in
August 2023. No exceedance of the Action and Limit Levels were recorded at
Surface WQM Location WM2 in August 2023. No exceedance of the Action and Levels
was recorded at designated monitoring stations in September 2023.
Environmental
Non-conformance/Compliant/Summons and Prosecution
One
warning regarding suspected non-compliance event with Condition 1.7 and 2.15(a)
of the EP & Condition 1.7 and 2.13(a) of the FEP-01 & FEP-02 was
recorded during the reporting period. The related rectified actions are being
taken in progress by the contractor.
No
summons/prosecutions were recorded and received in this reporting period.
Three
Complaint received on 3 and 18 August 2023 & 14 September 2023 were
recorded during the reporting period. For the complaint received on 3 August
2023, the further mitigation measures and enhancement of the temporary surface
water drainage system were advised to implement by contractor. For the
complaint received on 18 August & 14 September 2023, The related rectified
actions should be conducted by the contractor as soon as possible.
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 2.6 to 2.10 and Section 12.3 of the approved Environmental Monitoring and Audit (EM&A) Manual, Quarterly EM&A report should be submitted to the Director of Environmental Protection (DEP) within 10 working days after the end of the reporting quarter. 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 3rd Quarterly EM&A Report which summarises the impact monitoring results and audit findings for the EM&A programme during the reporting period from 01 July to 30 September 2023.
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 – Conclusion
2.1.1. A summary of the major construction activities undertaken in this reporting period is shown in Table 2-1. Construction programme is illustrated in Appendix A. Detailed construction activities are summarized in Appendix B.
Table 2-1 Major
Construction Activities Undertaken in the Reporting Period
Construction Activities Undertaken |
Reporting Month |
||
Jul 2023 |
Aug 2023 |
Sep 2023 |
|
✓ |
✓ |
✓ |
|
-
Permanent
site office foundation works with pouring of concrete |
✓ |
✓ |
|
- Construction
of site buildings |
|
|
✓ |
- Site clearance |
✓ |
✓ |
✓ |
- Installation
of permanent fencing |
✓ |
✓ |
✓ |
- Site formation |
✓ |
✓ |
✓ |
- Tree felling |
✓ |
✓ |
✓ |
Shotcreting
(Permanent and Temporary) |
|
|
✓ |
2.2. Project Organization & Management Structure
2.2.1. The Project Organization Chart & Management Structure are shown in Appendix C. The key personnel contact information is summarized in Table 2-2.
Table 2-2 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 2-3. 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 D.
Table 2-3 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 |
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 12th
monitoring (18 Jul 2023) 13th monitoring (11 Aug 2023) 14th monitoring (15 Sep 2023) |
2.8 |
2.10 |
Submission
of Translocation Report and Post-Translocation Monitoring |
Translocation was carried out and the report submitted. 12th
monitoring (12 Jul 2023) |
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 |
8th
report (Jul 2023) 9th
report (Aug 2023) 10th
report (Sep 2023) |
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 EP is presented in Table 2-4.
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 |
Further Environmental Permit (FEP) |
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 |
Registration as Chemical Waste Producer |
5213-642-P1034-18 |
Throughout the Contract |
Registered on 11 July 2022 |
Construction Noise Permit |
GW-RN0619-23 |
22 September 2023 |
Permit
granted on 16 June 2023 |
Construction Noise Permit |
GW-RN1012-23 |
22 December 2023 |
Permit
granted on 22 September 2023 (Replaced CNP No. GW-RN0619-23) |
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) |
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 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 The impact dust monitoring results are summarized in Table 3-3 and Table 3-4. The graphical presentations of monitoring data are presented in Appendix E.
Dust
Monitoring Station |
Average
1-hr TSP Concentration, µg/m³ (Range) |
Action
Level, µg/m³ |
Limit Level, µg/m³ |
||
Jul
2023 |
Aug 2023 |
Sep 2023 |
|||
AM1 |
35 (21 – 46) |
33 (20 – 40 |
44 (36 – 54) |
>285 |
>500 |
AM2 |
34 (21 – 48) |
35 (29 – 40) |
39 (36 – 42) |
>279 |
>500 |
AM3 |
32 (21 – 44) |
39 (29 – 50) |
45 (36 – 53) |
>285 |
>500 |
Dust
Monitoring Station |
Average
24-hr TSP Concentration, µg/m³ (Range) |
Action
Level, µg/m³ |
Limit Level, µg/m³ |
||
Jul
2023 |
Aug 2023 |
Sep 2023 |
|||
AM1 |
36 (17 – 60) |
29 (19 – 37) |
40 (32 – 48) |
>164 |
>260 |
AM2 |
34 (25 – 48) |
33 (27 – 43) |
41 (30 – 53) |
>152 |
>260 |
AM3 |
30 (22 – 40) |
40 (27 – 63) |
51 (36 – 67) |
>163 |
>260 |
3.1.3.2 The Summary of Impact 1-hr & 24-hr TSP Exceedance are shown in Table 3-5.
Dust
Monitoring Station |
Parameter |
1-hr
TSP |
Exceedance Count |
Accumulate of project |
24-hr
TSP |
Exceedance Count |
Accumulate of project |
Level
Exceedance |
|||||||
AM1 |
Action |
0 |
0 |
0 |
0 |
0 |
2* |
Limit |
0 |
0 |
0 |
0 |
0 |
3* |
|
AM2 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
|
AM3 |
Action |
0 |
0 |
0 |
0 |
0 |
4* |
Limit |
0 |
0 |
0 |
0 |
0 |
3* |
Remarks: * equal to non-project related
3.1.3.3 No Action / Limit Level exceedance for 1-hr & 24-hr TSP impact monitoring at AM1, AM2 & AM3 was recorded during the reporting period. The Notification of Environmental Quality Limits Exceedances are presented in Appendix F.
3.1.4 Recommended Mitigation Measures
3.1.4.1 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.
3.1.5.1 Should non-compliance of the criteria occur, action in accordance with the action plan in Table 3-6 shall be carried out.
Table 3-6 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. 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
The impact
noise monitoring results are summarized in Table 4-3. The graphical
presentations of monitoring data are presented in Appendix E.
Noise
Monitoring Station |
Average
Leq, 30min, dB(A) (Range) |
Action
Level |
Limit
Level |
||
Jul
2023 |
Aug
2023 |
Sep
2023 |
|||
NM1a |
62.1 (61.0 – 63.7) |
52.5 (51.3 – 53.1) |
58.3 (56.6 – 59.3) |
When one documented
complaint is received |
>75dB(A) |
NM2a |
56.3 (54.2 – 58.2) |
51.1 (47.3 – 54.5) |
53.6 (49.8 – 54.7) |
(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.
4.3.2
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 F.
4.3.3
No
particular observations are identified near the monitoring stations during the
monitoring period.
4.4 Recommended Mitigation Measures
4.4.1 The recommended dust 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.
4.5.1
Should
non-compliance of the criteria occurs, action in accordance with the action
plan in Table 4-4 shall be carried out.
Table 4-4 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. Additional surface water monitoring was carried out at
WM2 and GR3 (EPD Monitoring Location). 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.
The additional parameters, frequency and duration of surface water quality
monitoring are summarized in Table 5-3.
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 |
GR3* |
Ping Yuen River |
835361 |
844134 |
“*” The monitoring location only conducted based on the environmental
complaint.
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 |
Table 5-3 Additional surface
water quality monitoring Parameters, Frequency and Duration
Parameter
|
Frequency
|
pH, Electrical conductivity, DO, Turbidity, SS, COD, BOD5,
Ammonia-nitrogen, Chloride, Fe, Zn, and Coliform Count |
Based on the case of Environmental Complaint |
5.2.3 Monitoring Results
5.2.3.1
The summary of monitoring results is presented
in Table 5-4, Table 5-5 & Table 5-6. Detailed
graphical presentations at each monitoring station of surface water quality
(DO, SS and Turbidity) at the monitoring stations are given in Appendix E.
Table 5-4 Summary of Impact Surface Water Monitoring Results at WM1
Monitoring
Parameter(s) |
Monitoring Station WM1 |
||||
Monitoring Results |
Action Level |
Limit Level |
|||
Jul 2023 |
Aug 2023 |
Sep 2023 |
|||
pH |
7.2 |
6.7 |
7.2 |
>7.7 |
>7.8 |
Electrical Conductivity in μS/cm |
99 |
68 |
47 |
--- |
--- |
DO in mg/L |
7.5 |
6.5 |
7.8 |
<7.4 |
<4 |
Turbidity in NTU |
6.1 |
7.4 |
4.3 |
>9.2 |
>9.5 |
SS in mg/L |
2.0 |
7.2 |
3.0 |
>9.7 |
>11.4 |
Alkalinity |
18 |
19 |
11 |
--- |
|
COD |
12 |
6 |
9 |
||
BOD5 |
<2 |
<2 |
<2 |
||
TOC |
3 |
<1 |
2 |
||
Ammonia-nitrogen |
0.03 |
0.02 |
0.04 |
||
TKN |
0.4 |
0.2 |
0.4 |
||
Nitrate |
0.53 |
0.05 |
0.05 |
||
Sulphate |
7 |
2 |
4 |
||
Sulphite |
<2 |
<2 |
<2 |
||
Phosphate |
0.01 |
<0.01 |
0.02 |
||
Chloride |
7 |
5 |
6 |
||
Sodium |
8350 |
7740 |
6340 |
||
Mg |
660 |
560 |
430 |
||
Ca |
19400 |
3740 |
<0.2 |
||
K |
690 |
460 |
680 |
||
Fe |
780 |
780 |
270 |
||
Ni |
<1 |
<1 |
<1 |
||
Zn |
72 |
15 |
14 |
||
Mn |
72 |
46 |
32 |
||
Cu |
2.0 |
<1 |
1 |
||
Pb |
<1 |
<1 |
<1 |
||
Cd |
<0.2 |
<0.2 |
<0.2 |
||
Coliform Count |
56 |
68 |
240 |
||
Oil and Grease |
<5 |
<5 |
<5 |
“TBC” equal to To Be Confirm
Monitoring
Parameter(s) |
Monitoring Station WM2 |
||||
Monitoring Results |
Action Level |
Limit Level |
|||
Jul 2023 |
Aug 2023 |
Sep 2023 |
|||
pH |
7.1 |
6.8 |
7.2 |
>7.6 |
>7.7 |
Electrical Conductivity in μS/cm |
137 |
133 |
125 |
--- |
--- |
DO in mg/L |
50.2 |
32.2 |
7.6 |
<5 |
<4 |
Turbidity in NTU |
7.3 |
7.0 |
12 |
>108.3 |
>108.9 |
SS in mg/L |
16.8 |
30.8 |
7.6 |
>94.7 |
>94.7 |
Alkalinity |
38 |
35 |
31 |
--- |
|
COD |
9 |
7 |
6 |
||
BOD5 |
<2 |
<2 |
<2 |
||
TOC |
2 |
<1 |
2 |
||
Ammonia-nitrogen |
0.07 |
0.08 |
0.13 |
||
TKN |
0.3 |
0.4 |
0.3 |
||
Nitrate |
0.26 |
0.24 |
0.24 |
||
Sulphate |
13 |
17 |
20 |
||
Sulphite |
<2 |
<2 |
<2 |
||
Phosphate |
<0.01 |
<0.01 |
<0.01 |
||
Chloride |
7 |
6 |
4 |
||
Sodium |
6120 |
5840 |
4680 |
||
Mg |
1330 |
1480 |
1290 |
||
Ca |
15600 |
16100 |
<0.2 |
||
K |
2130 |
2140 |
1450 |
||
Fe |
2370 |
2710 |
670 |
||
Ni |
2.0 |
4 |
<1 |
||
Zn |
26 |
68 |
10 |
||
Mn |
757 |
1160 |
563 |
||
Cu |
2 |
2 |
<1 |
||
Pb |
3 |
4 |
1 |
||
Cd |
<0.2 |
<0.2 |
<0.2 |
||
Coliform Count |
850 |
290 |
290 |
||
Oil and Grease |
<5 |
<5 |
<5 |
“TBC” equal to To
Be Confirm
Monitoring Parameter(s) |
Monitoring
Station |
|||
WM2 |
GR3 (EPD Monitoring Location) |
|||
Monitoring Results |
Action Level |
Limit Level |
Monitoring Results |
|
pH |
7.5 |
>7.6 |
>7.7 |
7.4 |
DO in mg/L |
7.8 |
<5 |
<4 |
7.6 |
Turbidity in NTU |
8.8 |
>108.3 |
>108.9 |
13.1 |
Electrical
Conductivity in μS/cm |
71 |
--- |
--- |
108 |
SS in mg/L |
5.5 |
>94.5 |
>94.7 |
4.9 |
COD
in mg/L |
<5 |
|
6 |
|
BOD5 in
mg/L |
<2 |
<2 |
||
Ammonia-nitrogen
in mg/L |
2 |
2 |
||
Chloride in mg/L |
0.12 |
0.10 |
||
Iron
in µg/L |
910 |
670 |
||
Zinc in µg/L |
13 |
20 |
||
Coliform
Count
in cfu/100mL |
3400 |
380 |
Remarks:
“TBC” equal to To Be Confirm
5.2.3.2
No exceedance of Action Levels of surface water
monitoring was recorded in July 2023.
5.2.3.3
One DO exceedance of Action Level of surface
water quality at WM1 was recorded in August 2023. The Notification of
Environmental Quality Limits Exceedance is presented in Appendix
G. In
summary of the investigation, the DO exceedance in Action Level of Surface
Water Quality at WM1 may involve the vary of temperature under the hot weather.
Therefore, the exceedance is not related to project. No exceedance of Limit
Level of surface water monitoring at WM1 was recorded in August 2023. No
exceedance of Action Levels and Limit Level of surface water monitoring at WM2
were recorded in August 2023.
5.2.3.4
No exceedance of Action and Limit Levels of
surface water monitoring was recorded in September 2023.
5.2.3.5
The Summary of Impact Surface Water Quality
Exceedance are shown in Table 5-7. The Notification of Environmental
Quality Limits Exceedances will be presented in the report after the
investigation.
Water Quality Monitoring Station |
Parameter |
pH |
DO |
Turbidity |
SS |
Exceedance
Count |
Level Exceedance |
||||||
WM1 |
Action
|
0 |
1* |
0 |
0 |
1* |
Limit |
0 |
0 |
0 |
0 |
0 |
|
WM2 |
Action |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
Remarks:
(1) # The investigation results will be presented in the report after
the investigation.
(2) * equal to non-project related
5.2.4 Recommended Mitigation Measure
5.2.4.1 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.
5.2.5.1
Should non-compliance of the criteria occurs,
action in accordance with the action plan in Table 5-8 shall be carried
out.
Table
5-8 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
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 G.
6.2
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
· CH4: >10% Lower Explosion Limit (LEL);
· CO2: >0.5%; and
· O2: <18% by volume.
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.
7.2.6 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 Period |
Monitoring Location |
Type of
works |
Jul to Sep 2023 |
Portion A +50 mpD
to 70 mpD Platform |
Excavation Works |
7.3.1 The LFG monitoring was conducted at Portion A +50 mpD to 70 mpD Platform (Conducted on working days) from July to September 2023. The LFG monitoring results are summarized in Table 7-2.
Table 7-2 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 (Range) |
|||||
Portion A +50 mpD
to 70 mpD Platform |
Jul 2023 |
0 |
0 |
0 |
20.1 (20.0 – 20.2) |
Aug 2023 |
0 |
0 |
0 |
20.2 (20.1– 20.4 |
|
Sep 2023 |
0 |
0 |
0 |
20.2 (20.1 – 20.2) |
|
Action Level |
>10% LEL |
--- |
>0.5%** CO2 |
<19% |
* 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.
7.3.2 No exceedance of 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 F.
7.4 Recommended Mitigation
Measures
7.4.1 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.
7.5 Event and Action Plan (EAP)
7.5.1 Should non-compliance of the criteria occur, action in accordance with the action plan in Table 7-3 shall be carried out.
Table 7-3 Action Plan for
the 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.
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 H.
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 25 April 2022 and the verification works carried out on 23 August
22 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 22 August 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.
9.1.5 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 I. 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 was
conducted on 18 Jul, 11 Aug & 15 Sep 2023 based on the requirement of the
approved Transplantation Proposal for Plant Species of
Conservation Importance (Rev.1). The 12th
to 14th Post-transplantation Monitoring and Audit Reports (18th
July to 15th September 2023) present the details of requirements,
monitoring results and site inspection with photos. During the reporting
period, the numbers, measurements, and health conditions of the transplanted
plant species are recorded.
10.1.2
In the reporting period, the post-translocation monitoring for the Endemic Freshwater Crab Somanniathelphusa
zanklon was conducted on 12 Jul 2023 based on the
requirement of the approved Revised Translocation Proposal for the Endemic
Freshwater Crab Somanniathelphusa zanklon.
The 12th Post-Translocation Monitoring Report (July 2023) presents
the details of requirements, monitoring results and site inspection with
photos. During the reporting period, no S.
zanklon individual is identified.
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.
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 |
|
Post-translocation Monitoring |
1st (Nov 2022) |
24 Nov 2022 |
2nd
(Dec 2022) |
9
Dec 2022 |
|
3rd (Dec
2022) |
21 Dec 2022 |
|
4th
(Jan 2022) |
13
Jan 2023 |
|
5th (Jan
2022) |
26 Jan 2023 |
|
6th
(Feb 2023) |
8 Feb 2023 |
|
7th (Feb
2023) |
24 Feb 2023 |
|
8th
(Mar 2023) |
20 Mar 2023 |
|
9th
(Apr 2023) |
21 Apr 2023 |
|
10th
(May 2023) |
12 May 2023 |
|
11th
(Jun 2023) |
11 Jun 2023 |
|
12th
(Jul 2023) |
12
Jul 2023 |
11 Site Inspection and Audit
11.1.1
Site Inspection and audits were carried out by
ET on weekly basis to monitor the implementation of proper environmental
management practices and mitigation measures in the Project Site.
11.1.3
Details of observations and recommendations are
summarized in Table 11-1.
Table 11-1 Observations and Recommendations of Site
Audit
Parameter |
Date |
Observation
and Reminders |
Follow-up
Action Taken |
Air Quality |
3 Jul 2023 |
Observation: Dusty stockpiles in
Portion A shall be covered with impervious sheets when they are not in used. |
The Contractor was reminded to cover the
dusty stockpile with impervious sheets. |
31
Jul 2023 |
Observation: The slope surface at the Portion E4 shall be
coved by impervious sheet. |
The contractor was recommended that the
exposed slope at the Portion E4 should be covered by impervious sheet. The
exposed slope at the Portion E4 should be treated with shotcrete for long
term. |
|
31 Jul 2023 |
Observation: The assess road at the Portion E4 was dry. |
The contractor was advised that the assess road
at the Portion E4 should be sprayed with water when the assess road is dry to
minimize the dust suppression. The water sprinkler should be considered to
establish at the assess road of the Portion E4. |
|
28
Aug 2023 |
Observation: The work area in Portion A was dry and dusty. |
The contractor was advised to schedule watering
in the work area and review the coverage of the water sprinkler. |
|
4 Sep 2023 |
Observation: Dust drift was found at the assess road of
Portion A when vehicle moving. |
The contractor was advised to increase the
frequency of water spraying at the assess road of Portion A. |
|
11
Sep 2023 |
Observation: The dusty stockpile in SBA should be covered with
impervious sheet when the rainfall is forecast. |
The Contractor was advised to cover the
stockpiles with impervious sheet when they are idle. |
Parameter |
Date |
Observation
and Reminders |
Follow-up
Action Taken |
|
Air Quality |
18 Sep 2023 |
Observation: The demolished tree,
shrub or vegetation in Portion B2 should be covered with impervious sheets or
placed within a shelter. |
The Contractor was reminded to cover the
demolished tree, shrub or vegetation with impervious sheets or placed within
a shelter. |
|
18 Sep 2023 |
Observation: The dry PFA in Portion B2 should be covered
entirely with impervious sheets. |
The Contractor was reminded to cover
dry PFA entirely with impervious sheets. |
||
18 Sep 2023 |
Observation: The metal plate at the vehicle entrance in
Portion B2 should cover unpaved road surface in Portion B2. |
Vehicle entrance should be paved with concrete,
bituminous materials, hardcore or metal plates, and kept clear of dusty materials. |
||
18 Sep 2023 |
Observation: The main haul road in Portion E4 was dry ad
dusty. |
The Contractor was advised to schedule watering
and recommended to install water sprinklers or mist spray in long term. |
||
25 Sep 2023 |
Observation: The main haul road and work site should be
wetted regularly to minimize the dust dispersion. |
The Contractor was reminded to switch on the
water sprinklers along the haul road in SBA and to schedule watering for
unpaved haul road and work area. The Contractor has been advised to increase
the frequency of watering if necessary under the hot weather condition to
minimize dust dispersion. |
||
Noise |
No specific observation was identified in the
reporting period. |
|||
Water Quality |
3 Jul 2023 |
Observation: Muddy water was observed at the vehicular
entrance in Portion A. |
The Contractor was reminded to clear the
muddy water and divert the muddy water to wastewater treatment facility. |
|
12 Jul 2023 |
Observation: The stagnant water, floating leaves,
deposited silt and grit were found at the sedimentation basin near the wheel
washing facilities at the Portion B1. |
The contractor was recommended that the stagnant
water should be collected to silt removal facilities for treatment before
reusing for wheel washing. The floating leaves, deposited silt and grit
should be removed regularly. |
||
12 Jul 2023 |
Observation: The exposed slope surfaces were not
covered by tarpaulin sheets or treated with shotcrete at the Portion E3-1. |
The contractor was recommended to implement the
cover works of exposed slope surfaces by tarpaulin sheets or shotcrete at the
Portion E3-1 to minimise the potential high concentration construction runoff
to silt removal facilities. |
||
Parameter |
Date |
Observation
and Reminders |
Follow-up
Action Taken |
Water Quality |
18 Jul 2023 |
Observation: The earth bund along
the edge of the slope in Portion A was collapsed. The earth bund along the
edge of the slope in Portion A should be reconstructed to prevent surface
runoff flowing outside the site boundary. |
The Contractor was reminded to review the height
of the earth bund to ensure the surface runoff should not flow outside the
site boundary. |
24
Jul 2023 |
Observation: Dusty materials was entering in the
exist channel in Portion A. |
Earth bund or sand barriers shall be provided
along the existing channels in Portion A. |
|
24 Jul 2023 |
Observation: Earth bund shall be constructed at the
edge of the slope to prevent surface runoff flowing outside the site in
Portion A. |
The contractor was recommended to construction
earth bund along the edge of the slope in Portion A. |
|
24
Jul 2023 |
Observation: The accumulated silt and grit were found near the
sandbags barriers of the Portion E3-1 silt removal facilities. |
The contractor was advised that the silt and grit
should be removed near the sandbags barriers of the Portion E3-1 silt removal
facilities after heavy rain. |
|
24 Jul 2023 |
Reminder: The accumulated silt in sedimentation basin
Portion E3 shall be removed regularly. |
The Contractor was reminded to clear up the
accumulated silt regularly to ensure the proper function of the sedimentation
basin. |
|
31
Jul 2023 |
Reminder: The contractor was reminded that the particular
attention should be paid to the control of silty surface runoff during
upcoming storm event in accordance with Appendix A2 of ProPECC PN/94. |
The contractor was reminded that the particular
attention should be paid to the control of silty surface runoff during
upcoming storm event in accordance with Appendix A2 of ProPECC PN/94. |
|
31 Jul 2023 |
Observation: Earth bunds and ditches should be established at the boundary of the
+52 mpd Platform of the Portion A. |
The contractor was advised that the earth bunds
and ditches should be constructed at the boundary of the +52 mpd Platform of
the Portion A. The sandbags barriers or other control of surface runoff measures
should be provided at the boundary in short term to avoid the surface runoff
flow to the earth bunds at the boundary of the +38 mpd platform directly. |
|
07 Aug
2023 |
Reminder: Earth bunds, sand barriers or alternative shall be provided to prevent sand
or silt entering the existing channel through the gaps in Portion A. |
The contractor was advised to set up
barriers or other measures to prevent sand and silt getting into the channel. |
Parameter |
Date |
Observation
and Reminders |
Follow-up
Action Taken |
Water Quality |
07 Aug 2023 |
Reminder: The contractor was reminded to ensure the silt removal facility
functioning properly in Portion A. |
The contractor was reminded that silt
removal facility should be checked to ensure that they can function properly. |
07
Aug 2023 |
Observation: Flocs
and fine particles are floating on the water surface in sedimentation tank of
the silt removal facility while sand and silt were accumulated in the outlet
in Portion E3. |
The
Contractor was advised to schedule cleaning works
for the silt removal facility in Portion E3. |
|
14 Aug 2023 |
Observation: The accumulated surface runoff at the lower
elevation in Portion D should be diverted to the silt removal facility for
wastewater treatment after the rainfall. |
The contractor was advised to pump out the
accumulated surface runoff and divert to silt removal facility. |
|
14 Aug 2023 |
Observation: Silt was observed in the existing
channel at Portion A. The existing channel should be kept away from sand,
silt and surface runoff. |
The contractor was recommended to
construct earth bund with shotcrete along the existing channel in order to
prevent surface runoff entering the channel in Portion A. |
|
14 Aug 2023 |
Observation: The mixture of silt,
sand, rotten leaves and stagnant water in the drip tray should be cleared off
after the rainfall. |
The contractor was reminded to clear the drip
trays after the rainfall. |
|
14 Aug 2023 |
Observation: The
accumulated silt near the fencing in Portion A should be cleared off before
and after rainstorm. |
The contractor was advised to clear the
accumulated silt near the fencing in Portion A and sedimentation basin in
Portion E3 before and after rainstorm. |
|
14 Aug 2023 |
Observation: The accumulated silt in the sedimentation basin
at Portion E3 should be regularly removed, especially before and after the
rainstorm. |
The contractor was advised to clear the
accumulated silt near the fencing in Portion A and sedimentation basin in
Portion E3 before and after rainstorm. |
|
14 Aug 2023 |
Observation: The mixture of silt, sand, rotten
leaves and stagnant water in the drip tray should be cleared off after the
rainfall. |
The contractor was reminded to clear the drip
trays after the rainfall. |
Parameter |
Date |
Observation
and Reminders |
Follow-up
Action Taken |
Water Quality |
14 Aug 2023 |
Observation: The silt removal
facility was malfunctioned in Portion E3 and flocs are observed on the
surface of silt removal facility in both Portion A and Portion E3. The collected
wastewater should undergo sufficient mixing to ensure the discharged
wastewater should comply with the requirement of WPCO license. |
The Contractor has been advised to stop
the discharge of wastewater from the malfunctioned silt removal facility immediately.
The wastewater should be stored or treated by another silt removal facility
temporarily before the original silt removal facility is functioning
properly. The Contractor should ensure the discharged wastewater to comply
with the requirement of WPCO license. |
14 Aug 2023 |
Observation: The untreated wastewater was leaked
into the channel at Portion E3. The channel should be kept away from
untreated wastewater and general waste.
|
The contractor was also recommended to
increase the number of silt removal facility so as to increase the capacity
of wastewater treatment for long term. |
|
14 Aug 2023 |
Reminder: The Contractor was
reminded to check silt removal facilities, channels and manholes to ensure
that they can function properly for the upcoming rainfall in this week. |
The contractor was advised to seal the
leakage point(s) and place sandbag barriers along the channel to stop the
discharge of untreated wastewater in the channel immediately. The accumulated
silt and general waste in the channel should be removed. The Contractor has
been recommended to review the design of the sedimentation basin to prevent
this situation from happening again in the future. |
|
21 Aug 2023 |
Observation: Earth bond shall be constructed at the edge of
the slope
to prevent
surface runoff flowing outside the site in Portion A. |
The contractor was recommended to construction
earth bund along the edge of the slope in Portion A. |
|
28 Aug 2023 |
Observation: Dusty materials was entering in the exist
channel in Portion A. |
Earth bund or sand barriers shall be
provided along the existing channels in Portion A. |
|
4 Sep 2023 |
Observation: Surface runoff should be intercepted to avoid
direct discharge into the channel at Portion E3. |
The Contractor should review the effectiveness of
setting up sandbag barriers and modify measures to prevent the discharge of
surface runoff in both short term and long term. The Contractor was advised
to stop the discharge of surface runoff to channel immediately by using any
mitigation measures they found appropriate. In long term, the Contractor has
been recommended to construct earth bund along the channel to prevent this
situation happening again. |
Parameter |
Date |
Observation
and Reminders |
Follow-up
Action Taken |
Water Quality |
4 Sep 2023 |
Observation: The condition of silt fence in SBA should
be reviewed after the heavy rainfall over the few days and should be replaced
when it is broken. |
The broken or collapsed silt fence should be
replaced and properly set up after the heavy rainfall from last week. |
25 Sep 2023 |
Observation: The exposed slope surface along the channel
should be paved to reduce SS level in the wastewater. |
The Contractor was recommended to shotcrete the
exposed slope surface along the channel to reduce SS level in the wastewater. |
|
25 Sep 2023 |
Observation: The accumulated sand or silt in the outlet of the silt removal
facility at Portion A should be removed. |
The Contractor was advised to clear the
accumulated sand or silt in the outlet of the silt removal facility at
Portion A. |
|
Waste
and Chemical Management |
3 Jul 2023 |
Observation: Chemical containers in SBA shall be
stored properly to prevent any potential of chemical leakage and generation
of chemical waste. |
The contractor has been reminded to provide
proper chemical storage area on site. |
12 Jul 2023 |
Observation: Full loading of the rubbish skips for general
waste at the Portion D and lack of waste separation were found. |
The contractor was recommended that accumulation
of waste should be avoid, the waste should be disposed regularly & the
general waste should be collected properly by using the waste separation
facilities for paper, aluminium cans and plastic bottles etc. |
|
12 Jul 2023 |
Observation: The high amount of deposited silt was
found at the silt removal facilities at the Portion E3-1. |
The contractor was advised that the deposited
silt should be removed and regularly and increase the checking frequency of
it, and the silt removal facilities should be maintained at good condition to
maintain the high effectiveness of it. |
|
18 Jul 2023 |
Observation: The stagnant water in the drip trays should be
cleared off In Portion A. |
The Contractor was reminded to clear the drip
tray after the rainfall. |
|
07 Aug 2023 |
Observation: The mixture of silt and stagnant water
in the drip tray should be cleared off in Portion E3. |
The contractor was recommended to clear
the drip tray. |
Parameter |
Date |
Observation
and Reminders |
Follow-up
Action Taken |
Waste and Chemical Management |
14 Aug 2023 |
Observation: Oil drums in SBA are observed without drip
tray. |
Drip tray should be provided to the oil drums and
all chemical container in the site. |
21
Aug 2023 |
Observation: The mixture of silt and stagnant water
in the drip tray should be cleared off in Portion E3. |
The contractor was reminded to clear
the drip tray. |
|
21 Aug 2023 |
Observation: Enclosed bins or compaction units should
be provided to separate general waste with chemical waste and construction
waste in Portion A. |
The contractor was recommended to provide
enclosed bins or compaction units in Portion A. |
|
21 Aug 2023 |
Observation: Chemical containers should be placed within the
drip trays in Portion E4. |
The contractor was reminded to provide
drip tray for all chemical containers. |
|
4 Sep 2023 |
Observation: Over loading of accumulated waste was found
at the waste skip of Portion D. |
The contractor was recommended to increase
the frequency of waste collection and the amount of waste skip to avoid over
loading condition of waste skip at Portion D. |
|
18 Sep 2023 |
Observation: General refuse and non-inert waste should be
stored in enclosed bins or compaction unit. |
General
waste generated on-site should be stored in enclosed bins or compaction units
separately from the construction and chemical wastes. |
|
18 Sep 2023 |
Observation: Empty chemical containers in Portion E3
should be properly stored before the disposal. |
The Contractor
was reminded to properly store empty chemical container before disposal. |
|
25 Sep 2023 |
Observation: Chemical spillage was observed at Portion E4 and
chemical containers should be placed on the drip tray. |
The
Contractor was reminded to dispose chemical waste and provide drip tray for
all chemical containers. |
|
Landscape and Visual Impact |
No specific observation was identified in the
reporting period. |
||
Permit
/ Licenses |
No specific observation was identified in the
reporting period. |
11.1.4 Five general site inspection on 31 July,
4 & 21 August 2023, and 7 & 13 September 2023 were conducted by Environmental
Protection Department-Regional Office (North) (EPD-RNG).
12 Environmental Non-conformance
12.1 Summary of Monitoring Exceedance
Air
Quality, Noise & Landfill Gas Monitoring
12.1.1
No Action / Limit Level exceedance impact
monitoring was recorded at designated monitoring stations during the reporting period.
12.1.2 The Summary of Impact 1-hr & 24-hr TSP Exceedance are shown in Table 12-1.
Dust
Monitoring Station |
Parameter |
1-hr
TSP |
Exceedance Count |
Accumulate of project |
24-hr
TSP |
Exceedance Count |
Accumulate of project |
Level
Exceedance |
|||||||
AM1 |
Action |
0 |
0 |
0 |
0 |
0 |
2* |
Limit |
0 |
0 |
0 |
0 |
0 |
3* |
|
AM2 |
Action |
0 |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
0 |
|
AM3 |
Action |
0 |
0 |
0 |
0 |
0 |
4* |
Limit |
0 |
0 |
0 |
0 |
0 |
3* |
Remarks: * equal to non-project related
Surface Water Quality Monitoring
12.1.3 No exceedance of
Action Levels of surface water monitoring was recorded in July 2023.
12.1.4 One DO exceedance of
Action Level of surface water quality at WM1 was recorded in August 2023. The
Notification of Environmental Quality Limits Exceedance is presented in Appendix G. In summary of the investigation, the DO exceedance
in Action Level of Surface Water Quality at WM1 may involve the vary of
temperature under the hot weather. Therefore, the exceedance is not related to project.
No exceedance of Limit Level of surface water monitoring at WM1 was recorded in
August 2023. No exceedance of Action Levels and Limit Level of surface water
monitoring at WM2 were recorded in August 2023.
12.1.5 No exceedance of
Action and Limit Levels of surface water monitoring was recorded in September
2023.
12.1.6 The Summary of Impact Surface Water Quality Exceedance are shown in Table 12-2
Water
Quality Monitoring Station |
Parameter |
pH |
DO |
Turbidity |
SS |
Exceedance Count |
Level
Exceedance |
||||||
WM1 |
Action |
0 |
1* |
0 |
0 |
1* |
Limit |
0 |
0 |
0 |
0 |
0 |
|
WM2 |
Action |
0 |
0 |
0 |
0 |
0 |
Limit |
0 |
0 |
0 |
0 |
0 |
Remarks:
(1) # The
investigation results will be presented in the report after the investigation.
(2) * equal to
non-project related
12.2 Summary of Environmental Non-compliance
12.2.1
One warning regarding suspected non-compliance
event with Condition 1.7 and 2.15(a) of the EP & Condition 1.7 and 2.13(a)
of the FEP-01 & FEP-02 was recorded during the reporting period. The
related rectified actions are being taken in progress by the contractor.
12.3 Summary of Environmental Complaint
12.3.1
No environmental complaint was recorded from July
2023.
12.3.2
One complaint received from EPD-RNG on 3 August
2023 and another one complaint received from EPD-RNG on 18 August 2023 were
recorded in August 2023. The complaint on 3 August 2023 & complaint on 18
August 2023 were investigated by related parties.
12.3.3
One complaint received from EPD-RNG on 14
September 2023 was recorded in September 2023. The complaint on 14 September
2023 was investigated by related parties.
Environmental Complaint on 3 August 2023
12.3.4
The complaint about the water aspect was
received by ET on 3 August 2023 at 17:45 via EPD-RNG email. The main content of
the complaint mentioned the muddy water was observed at River Ganges (GR3)
(Water Quality Monitoring Point from EPD). In summary of the investigation, the
muddy water caused from multi-potential sources while the runoff from the box
culvert under the Wo Keng Shan Road is the major source including runoff from
Existing channel near Portion E3-1, discharge water from the silt removal
facilities at Portion E3-1 of the project, runoff from branch near the entrance
of Portion E3-1, runoff from weighting plaza of NENT Landfill & natural
stream near Wo Keng Shan & Shui Ngau Tso etc.. Hence, the project is a part
of factor causing the high turbidity muddy water. To minimise the potential
impact of construction runoff from the project, the further mitigation measures
and enhancement of the temporary surface water drainage system were advised to
implement by contractor.
Environmental Complaint on 18 August 2023
12.3.5
The complaint about the water aspect was
received by ET on 18 August 2023 at 16:51 via EPD-RNG email. The main content
of the complaint mentioned the muddy water was observed at River Ganges (GR3)
(Water Quality Monitoring Point from EPD). In summary
of the investigation, the complaint is project related. It viewed that muddy
water arising from wheel washing water from the site entrance at Portion E4
& Runoff from Existing Channel near Portion E3-1 & discharge water from
the silt removal facilities at Portion E3-1 eventually flows into the box
culvert under Wo Keng Shan Road, WM2 and ultimately to GR3. The related
rectified actions should be conducted by the contractor as soon as possible.
Environmental Complaint on 14 September 2023
12.3.6
The complaint about the water aspect was
received by ET on 14 September 2023 at 17:17 via EPD-RNG email. The main
content of the complaint mentioned the muddy water was observed at River Ganges
(GR3) (Water Quality Monitoring Point from EPD). In summary of the investigation, the complaint is project
related. It viewed that muddy water arising from wheel washing water from the
site entrance at Portion E4 & Runoff from Existing Channel near Portion
E3-1 & discharge water from the silt removal facilities at Portion E3-1
eventually flows into the box culvert under Wo Keng Shan Road, WM2 and
ultimately to GR3. The related rectified actions should be conducted by the
contractor as soon as possible.
12.3.7
The cumulative statistics on environmental
complaints are presented in Table 12-3.
Table 12-3
Cumulative Statistics on Environmental Complaints
Reporting Period |
Environmental Aspects |
No. of Environmental
Complaints |
||||
Air
Quality |
Noise
|
Water
Quality |
Waste |
Ecology |
||
Jul 2023 |
0 |
0 |
0 |
0 |
0 |
0 |
Aug 2023 |
0 |
0 |
2 |
0 |
0 |
0 |
Sep 2023 |
0 |
0 |
1 |
0 |
0 |
0 |
Total |
0 |
0 |
3 |
0 |
0 |
0 |
Accumulate of project |
1* |
0 |
5(1*) |
0 |
0 |
6(2*) |
Remarks:
(1) * equal to non-project related after the
investigation
(2) # equal to the investigation results will be
presented in the report after the investigation.
12.3.8
Cumulative complaint / enquiry log, Summaries
of complaints and enquiries & Environmental complaint reports are presented
in Appendix J. The investigation results will be presented
when the investigation was finished.
12.4 Summary of Environmental Summons and Successful Prosecution
12.4.1
No summons and prosecution were received during
the reporting period
13 Implementation Status on Environmental Mitigation Measures
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 implemented mitigation measures are considered
effective. The implementation status during the reporting period is summarized
in Appendix
H.
14.1.1
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 at AM1, AM2 & AM3 was recorded
during the period.
14.1.2
Construction noise monitoring was carried out
in the reporting month. No Action / Limit Level exceedance at NM1a & NM2a
was recorded during the period.
14.1.4
Surface water monitoring was carried out in the
reporting month. No exceedance of Action Levels of surface water
monitoring was recorded in July 2023. One DO exceedance of Action Level of
surface water quality at WM1 was recorded in August 2023. In summary of the
investigation, the DO exceedance in Action Level of Surface Water Quality at
WM1 may involve the vary of temperature under the hot weather. Therefore, the
exceedance is not related to project. No exceedance of Limit Level of surface
water monitoring at WM1 was recorded in August 2023. No exceedance of Action
Levels and Limit Level of surface water monitoring at WM2 were recorded in
August 2023. No exceedance of Action and Limit Levels of surface water
monitoring was recorded in September 2023.
14.1.5 Landfill
Gas Monitoring was carried out in the reporting month. No exceedance of Limit
Levels of LFG was recorded during the reporting period.
14.1.6 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.
14.1.7
Post-translocation Monitoring was carried out in
the reporting period. No S. zanklon individual was found. Post-transplantation
monitoring was carried out in the reporting period. The numbers, measurements
and health conditions of the transplanted species are recorded.
14.1.8 13 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.
14.1.9
No environmental complaint was recorded from
July 2023. One complaint received from EPD-RNG on 3 August 2023 and another one
complaint received from EPD-RNG on 18 August 2023 were recorded in August 2023.
For the complaint from EPD-RNG on 3 August 2023, the further mitigation measures
and enhancement of the temporary surface water drainage system were advised to
implement by contractor. For the complaint received from EPD-RNG on 18 August
2023, the related rectified actions should be conducted by the contractor as
soon as possible. One complaint received from EPD-RNG on 14 September 2023 was
recorded in September 2023. The related rectified actions should be conducted
by the contractor as soon as possible.
14.1.10
One warning regarding suspected non-compliance
event with Condition 1.7 and 2.15(a) of the EP & Condition 1.7 and 2.13(a)
of the FEP-01 & FEP-02 was recorded during the reporting period. The
related rectified actions are being taken in progress by the contractor.
14.1.11
No notification of summons and
prosecution was received during the reporting period.
Comment and Recommendations
14.1.12
The recommended environmental mitigation
measures, as proposed in the EIA reports and EM&A Manuals shall be
effectively implemented to minimize the potential environmental impacts from
the Project. The EM&A programme would effectively monitor the environmental
impacts generated from the construction activities and ensure the proper
implementation of mitigation measures.
14.1.13
According to the environmental audit performed
in the reporting period, the following recommendations were made:
Air Quality Impact
•
The Contractor was reminded to cover the dusty
stockpile with impervious sheets.
•
The Contractor was recommended that the exposed
slope should be covered by impervious sheet. The exposed slope should be
treated with shotcrete for long term.
•
The Contractor was advised that the assess road
should be sprayed with water when the assess road is dry to minimize the dust
suppression. The water sprinkler should be considered to establish at the
assess road.
•
The Contractor was advised to schedule watering in
the work area and review the coverage of the water sprinkler.
•
The Contractor was advised to increase the
frequency of water spraying at the assess road.
•
The Contractor was advised to cover the stockpiles with
impervious sheet when they are idle.
•
The Contractor was reminded to cover the demolished
tree, shrub or vegetation with impervious sheets or placed within a shelter.
•
The Contractor was reminded to cover dry PFA
entirely with impervious sheets.
•
Vehicle entrance should be paved with concrete,
bituminous materials, hardcore or metal plates, and kept clear of dusty
materials.
Construction Noise Impact
•
No specific observation was identified in the
reporting period.
Water Quality Impact
•
The Contractor was reminded to clear the muddy
water and divert the muddy water to wastewater treatment facility.
•
The Contractor was recommended that the stagnant
water should be collected to silt removal facilities for treatment before
reusing for wheel washing. The floating leaves, deposited silt and grit should
be removed regularly.
•
The Contractor was recommended to implement the
cover works of exposed slope surfaces by tarpaulin sheets or shotcrete to
minimise the potential high concentration construction runoff to silt removal
facilities.
•
The Contractor was reminded to review the height of
the earth bund to ensure the surface runoff should not flow outside the site
boundary.
•
The Contractor was recommended to construction
earth bund along the edge of the slope.
•
The Contractor was advised that the silt and grit
should be removed near the sandbags barriers of the Portion E3-1 silt removal
facilities after heavy rain.
•
The Contractor was reminded that the particular
attention should be paid to the control of silty surface runoff during upcoming
storm event in accordance with Appendix A2 of ProPECC PN/94.
•
The Contractor was advised that the earth bunds and
ditches should be constructed at the boundary of the +52 mpd Platform of the
Portion A. The sandbags barriers or other control of surface runoff measures
should be provided at the boundary in short term to avoid the surface runoff
flow to the earth bunds at the boundary of the +38 mpd platform directly.
•
The Contractor was reminded that silt removal
facility should be checked to ensure that they can function properly.
•
The Contractor was advised to pump out the
accumulated surface runoff and divert to silt removal facility.
•
The Contractor was reminded to clear the drip trays
after the rainfall.
•
The Contractor was advised to clear the accumulated
silt near the fencing in Portion A and sedimentation basin in Portion E3 before
and after rainstorm.
•
The Contractor was recommended to construction
earth bund along the edge of the slope in Portion A.
•
Earth bund or sand barriers shall be provided along
the existing channels in Portion A.
•
The Contractor should review the effectiveness of
setting up sandbag barriers and modify measures to prevent the discharge of
surface runoff in both short term and long term. The Contractor was advised to
stop the discharge of surface runoff to channel immediately by using any
mitigation measures they found appropriate. In long term, the Contractor was
recommended to construct earth bund along the channel to prevent this situation
happening again.
•
The broken or collapsed silt fence should be
replaced and properly set up after the heavy rainfall from last week.
•
The Contractor was advised to reconstruct the
demolished sedimentation basin to act as silt trap and to achieve 5 minutes of
retention time under maximum flow condition.
•
The Contractor was recommended to shotcrete the
exposed slope surface along the channel to reduce SS level in the wastewater.
•
The Contractor was advised to clear the accumulated
sand or silt in the outlet of the silt removal facility at Portion A The Contractor has been advised to stop the
discharge of wastewater from the malfunctioned silt removal facility
immediately. The wastewater should be stored or treated by another silt removal
facility temporarily before the original silt removal facility is functioning
properly. The Contractor should ensure the discharged wastewater to comply with
the requirement of WPCO license.
•
The Contractor was also recommended to increase the
number of silt removal facility so as to increase the capacity of wastewater
treatment for long term.
•
The Contractor was advised to seal the leakage
point(s) and place sandbag barriers along the channel to stop the discharge of
untreated wastewater in the channel immediately. The accumulated silt and
general waste in the channel should be removed. The Contractor has been
recommended to review the design of the sedimentation basin to prevent this
situation from happening again in the future.
Waste and Chemical Management
•
The Contractor has been reminded to provide proper
chemical storage area on site.
•
The Contractor was recommended that accumulation of
waste should be avoid, the waste should be disposed regularly & the general
waste should be collected properly by using the waste separation facilities for
paper, aluminium cans and plastic bottles etc.
•
The Contractor was advised that the deposited silt
should be removed and regularly and increase the checking frequency of it, and
the silt removal facilities should be maintained at good condition to maintain
the high effectiveness of it.
•
The Contractor was reminded to clear the drip tray
after the rainfall.
•
Drip tray should be provided to the oil drums and
all chemical container in the site.
•
The contractor was recommended to provide enclosed
bins or compaction units in Portion A.
•
The contractor was recommended to increase the
frequency of waste collection and the amount of waste skip to avoid over
loading condition of waste skip at Portion D.
•
General waste generated on-site should be stored in
enclosed bins or compaction units separately from the construction and chemical
wastes.
•
The Contractor was reminded to properly store empty
chemical container before disposal.
•
The Contractor was reminded to dispose chemical
waste and provide drip tray for all chemical containers.
Landscape and Visual Impact
•
No specific observation was identified in the
reporting period.
Permit / Licenses
•
No specific observation was identified in the
reporting period.
14.1.14
The Contractor has generally implemented
environmental mitigation measures and requirements as stated in the EIA Report,
the EP and EM&A Manual and the contract documents. The implemented mitigation
measures are considered effective.
14.1.15
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.