Agreement No. CE 20/2004(EP) North East
New Territories (NENT) Landfill Extension Quarterly Environmental Monitoring and Audit
Report (No. 4) October to December 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 and Summaries of complaints and enquiry |
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
4th Quarterly EM&A Report presents the EM&A works conducted
from 1 October to 31 December 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 |
|||
Oct 2023 |
Nov 2023 |
Dec 2023 |
|
-
Material
loading and unloading, site traffic |
✓ |
✓ |
✓ |
- Construction of site buildings |
✓ |
✓ |
✓ |
- Site clearance |
✓ |
✓ |
✓ |
- Installation
of permanent fencing |
✓ |
✓ |
✓ |
- Site formation |
✓ |
✓ |
✓ |
- Tree felling |
✓ |
✓ |
✓ |
Shotcreting
(Permanent and Temporary) |
✓ |
✓ |
✓ |
Soil Nail
Installation |
|
|
✓ |
Environmental
Exceedance
Air Quality, Noise, Surface Water Quality
& Landfill Gas Monitoring
No exceedance of the Action and Limit
Levels were recorded at designated monitoring stations during the reporting
period.
Environmental
Non-conformance/Compliant/Summons and Prosecution
No
non-conformance event, complaint, summons/prosecutions were recorded and received
in this reporting period.
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 4th Quarterly EM&A Report which summarises the impact monitoring results and audit findings for the EM&A programme during the reporting period from 01 October to 31 December 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 |
||
Oct
2023 |
Nov 2023 |
Dec 2023 |
|
-
Material
loading and unloading, site traffic |
✓ |
✓ |
✓ |
- Construction
of site buildings |
✓ |
✓ |
✓ |
- Site clearance |
✓ |
✓ |
✓ |
- Installation
of permanent fencing |
✓ |
✓ |
✓ |
- Site formation |
✓ |
✓ |
✓ |
- Tree felling |
✓ |
✓ |
✓ |
Shotcreting
(Permanent and Temporary) |
✓ |
✓ |
✓ |
Soil Nail
Installation |
|
|
✓ |
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 15th monitoring (13 Oct 2023) |
2.8 |
2.10 |
Submission
of Translocation Report and Post-Translocation 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 |
11th
report (Oct 2023) 12th
report (Nov 2023) 13th
report (Dec 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-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.
Month |
Average
1-hr TSP Concentration, ΅g/m³ (Range) |
||
Dust Monitoring Station |
|||
AM1 |
AM2 |
AM3 |
|
Oct 2023 |
31 (21 40) |
42 (34 52) |
46 (32 60) |
Nov 2023 |
28 (22 36) |
34 (30 39) |
37 (30 43) |
Dec 2023 |
29 (26 34) |
37 (23 59) |
51 (40 67) |
Action Level |
>285 |
>279 |
>285 |
Limit Level |
>500 |
Month |
Average
24-hr TSP Concentration, ΅g/m³ (Range) |
||
Dust Monitoring Station |
|||
AM1 |
AM2 |
AM3 |
|
Oct 2023 |
70 (62 77) |
55 (43 77) |
70 (61 78) |
Nov 2023 |
112 (101 128) |
89 (70 110) |
101 (88 117) |
Dec 2023 |
97 (71 108) |
81 (65 119) |
91 (70 122) |
Action Level |
>164 |
>152 |
>163 |
Limit Level |
>260 |
3.1.3.2 The Summary of Impact 1-hr & 24-hr TSP Exceedance are shown in Table 3-5.
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
3.1.3.3 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 Contractors
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.
Month |
Average
Leq, 30min, dB(A) (Range) |
|
Noise Monitoring Station |
||
NM1a |
NM2a |
|
Oct 2023 |
63.1 (59.6 64.8) |
55.2 (53.8 56.3) |
Nov 2023 |
60.0 (52.2 63.3) |
49.1 (47.7 49.8) |
Dec 2023 |
61.9 (57.7 64.1) |
53.5 (49.6 54.9) |
Action Level |
When one documented
complaint is received |
|
Limit Level |
>75dB(A) |
Remark:
(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 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.
4.5.1
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 Contractors 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.
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 |
5.2.3.1
The summary of monitoring results is presented
in Table 5-3 & Table 5-4. 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 5-3 Summary of Impact Surface Water Monitoring Results at WM1
Monitoring
Parameter(s) |
Monitoring Station WM1 |
||||
Monitoring Results |
Action Level |
Limit Level |
|||
Oct 2023 |
Nov 2023 |
Dec 2023 |
|||
pH |
7.4 |
7.6 |
7.6 |
>7.7 |
>7.8 |
DO in mg/L |
7.9 |
7.5 |
7.6 |
<7.4 |
<4 |
Turbidity in NTU |
6.6 |
5.1 |
5.8 |
>9.2 |
>9.5 |
Electrical Conductivity in μS/cm |
51 |
59 |
95 |
--- |
--- |
SS in mg/L |
4.0 |
2.5 |
9.5 |
>9.7 |
>11.4 |
Alkalinity |
14 |
17 |
16 |
--- |
|
COD |
21 |
7 |
7 |
||
BOD5 |
<2 |
<2 |
<2 |
||
TOC |
2 |
2 |
<1 |
||
Ammonia-nitrogen |
0.08 |
0.07 |
0.03 |
||
TKN |
0.3 |
0.5 |
0.2 |
||
Nitrate |
0.06 |
0.05 |
0.03 |
||
Sulphate |
<1 |
<1 |
3 |
||
Sulphite |
<2 |
<2 |
<2 |
||
Phosphate |
0.01 |
0.0 |
0.0 |
||
Chloride |
6 |
6 |
6 |
||
Sodium |
6790 |
8120 |
8380 |
||
Mg |
450 |
480 |
500 |
||
Ca |
2850 |
3330 |
3290 |
||
K |
530 |
600 |
400 |
||
Fe |
330 |
420 |
930 |
||
Ni |
<1 |
<1 |
1.0 |
||
Zn |
10 |
13 |
<10 |
||
Mn |
28 |
41 |
57 |
||
Cu |
<1 |
2.0 |
<1 |
||
Pb |
<1 |
<1 |
<1 |
||
Cd |
<0.2 |
<0.2 |
<0.2 |
||
Coliform Count |
1600 |
25 |
Not Detected |
||
Oil and Grease |
<5 |
<5 |
<5 |
TBC equal to To Be Confirm
Monitoring
Parameter(s) |
Monitoring Station WM2 |
||||
Monitoring Results |
Action Level |
Limit Level |
|||
Oct 2023 |
Nov 2023 |
Dec 2023 |
|||
pH |
7.6 |
7.5 |
7.5 |
>7.6 |
>7.7 |
DO in mg/L |
7.5 |
6.5 |
5.6 |
<5 |
<4 |
Turbidity in NTU |
43.2 |
20.8 |
60.2 |
>108.3 |
>108.9 |
Electrical Conductivity in μS/cm |
148 |
159 |
191 |
--- |
--- |
SS in mg/L |
19.4 |
10.0 |
44.6 |
>94.7 |
>94.7 |
Alkalinity |
36 |
44 |
54 |
--- |
|
COD |
<5 |
<5 |
7 |
||
BOD5 |
<2 |
<2 |
<2 |
||
TOC |
2 |
2 |
2 |
||
Ammonia-nitrogen |
0.11 |
0.06 |
0.26 |
||
TKN |
0.2 |
0.1 |
0.5 |
||
Nitrate |
0.25 |
0.19 |
0.15 |
||
Sulphate |
18 |
24 |
22 |
||
Sulphite |
<2 |
<2 |
<2 |
||
Phosphate |
<0.01 |
<0.01 |
<0.01 |
||
Chloride |
5 |
6 |
8 |
||
Sodium |
5190 |
6010 |
7770 |
||
Mg |
1320 |
1470 |
1970 |
||
Ca |
16500 |
19400 |
23800 |
||
K |
2470 |
2010 |
2480 |
||
Fe |
1780 |
1340 |
3080 |
||
Ni |
1.0 |
2 |
2 |
||
Zn |
13 |
20 |
26 |
||
Mn |
703 |
1350 |
2540 |
||
Cu |
1 |
1 |
3 |
||
Pb |
5 |
1 |
4 |
||
Cd |
<0.2 |
<0.2 |
<0.2 |
||
Coliform Count |
1000 |
56 |
10 |
||
Oil and Grease |
<5 |
<5 |
<5 |
TBC equal to To
Be Confirm
5.2.3.2
The Summary of Impact Surface Water Quality
Exceedance are shown in Table 5-5.
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
5.2.3.3
No exceedance of Action and Limit Levels of
surface water monitoring was recorded during the reporting period. The
Notification of Environmental Quality Limits Exceedance is presented in Appendix
G.
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 5-6 shall be carried
out.
Table
5-6 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 Contractors working methods
Repeat measurement on next day of exceedance |
Verify Notification of Exceedance
Check monitoring
data and Contractors 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 Contractors 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 Contractors 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 Contractors 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 |
Oct to Dec 2023 |
Portion A +50 mpD
to 70 mpD Platform |
Excavation Works |
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 |
Oct 2023 |
0 |
0 |
0 |
20.2 (20.1 20.3) |
Nov 2023 |
0 |
0 |
0 |
20.1 (20.0 20.2) |
|
Dec 2023 |
0 |
0 |
0 |
20.1 (20.0 20.2) |
|
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.
7.3.2 No exceedance of Action and Limit Levels of LFG was recorded during the reporting period. The Notification of Environmental Quality Limits Exceedance is presented in Appendix G.
7.3.3 No effect that arose from the other special phenomena and work progress of the concerned site was noted during the current monitoring month.
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 based on the requirement of the approved Transplantation
Proposal for Plant Species of Conservation Importance (Rev.1). The 15th
Post-transplantation Monitoring and Audit Report (13th October 2023)
presents 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. 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
In the reporting period, the post-translocation monitoring for the Endemic Freshwater Crab Somanniathelphusa
zanklon was based on the requirement of the approved
Revised Translocation Proposal for the Endemic Freshwater Crab Somanniathelphusa zanklon. 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.
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 |
|
15th |
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
11.1.1
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 |
16 Oct 2023 |
Reminder: The contractor was reminded to provide
regular water spraying to the haul road to control the dust level. |
The contractor was reminded to provide
regular water spraying to the haul road to control the dust level. |
24 Oct 2023 |
Reminder: The contractor was reminded to increase the water
spraying at the unpaved area and assess road. |
The contractor was reminded to increase the water
spraying at the unpaved area and assess road. |
|
6 Nov 2023 |
Observation: The outside surrounding of the scaffolding
without dust screen, sheeting or netting was found at the Portion D. |
The contractor was advised that the effective
dust screens, sheeting or netting should be provided to enclose the
scaffolding from the ground floor level of the building, or a canopy provided
from the first-floor level up to the highest level of the scaffolding. |
|
13
Nov 2023 |
Observation: The loaded dump truck without covering impervious
sheet was found at the assess road between Portion A and E4. |
The contractor was recommended to ensure all of
loaded dump trucks should be covered by impervious sheeting. |
|
27 Nov 2023 |
Reminder: The contractor was
reminded that water spraying shall be provided regularly for dust control. |
The contractor was reminded that water
spraying shall be provided regularly for dust control. |
|
4
Dec 2023 |
Observation: The dust dispersion was observed in the site. |
The contractor was advised to regularly water the
works area and provide enough sprayers to dampen the surface of construction
materials and the site, especially during the work process, to minimize dust
dispersion. |
|
11 Dec 2023 |
Observation: The accumulated uprooting of trees at
portion E4 was observed. |
The contractor was advised to regularly
water the uprooted trees to prevent dust dispersion and arrange for regular
disposal to avoid accumulation. |
Parameter |
Date |
Observation
and Reminders |
Follow-up
Action Taken |
|
Air Quality |
18 Dec 2023 |
Observation: Stockpiling of dusty material without
covered by impervious sheet at Portion D was observed. |
The contractor was reminded that
stockpiling of dusty material should be covered by impervious sheet at
Portion D to prevent dust dispersion. |
|
18 Dec 2023 |
Reminder: The contractor was recommended that the exposed
slope surface at SBA should be covered by an impervious sheet in the short
term and should be shotcrete or other measurements for long-term surface
protection. |
The contractor was recommended that the exposed
slope surface at SBA should be covered by an impervious sheet in the short
term and should be shotcrete or other measurements for long-term surface
protection. |
||
27 Dec 2023 |
Observation: Assess road was dry and fugitive dust was
observed, especially at portion E4. |
The contractor was recommended to arrange
watering and provide enough sprayers to minimize dust dispersion at all
assess road. |
||
27 Dec 2023 |
Observation: Exposed slope surface without covered by
tarpaulin sheets at portion E4 was observed. |
The contractor was advised that the exposed slope
surface at portion E4 should be covered by tarpaulin sheets or other
measurement like shotcrete or hydroseeding for long term slope surface
protection. |
||
27 Dec 2023 |
Observation: Dusty materials without covered by
impervious sheet at portion E4 was observed. |
The contractor was reminded that the dusty
materials should be covered with impervious sheet to prevent dust
suppression. |
||
Noise |
No specific observation was identified in the
reporting period. |
|||
Water Quality |
3 Oct 2023 |
Observation: The accumulated silt in the channel at
Portion E3 should be regularly removed. |
The contractor was advised to conduct regularly
cleaning works to remove the accumulated silt in the channel. |
|
3 Oct 2023 |
Observation: The accumulated surface runoff in Portion E3
should be divided to the silt removal facility for wastewater treatment. |
The contractor was advised to divide the surface
runoff to the silt removal facility for proper wastewater treatment. |
||
11 Oct 2023 |
Observation: The slope surface protection should be enhanced
at Portion E4 near entrance and assess road. |
The contractor was recommended that the exposed
slope should be covered with impervious sheet in the short term and the
shotcrete for slope surface should be conducted in the long term. |
||
11 Oct 2023 |
Observation: The exposed slope should be covered with
impervious sheet at the SBA and Portion E4. |
The contractor was recommended that the exposed
slope should be covered with impervious sheet in the short term and the
shotcrete for slope surface should be conducted in the long term. |
||
Parameter |
Date |
Observation
and Reminders |
Follow-up
Action Taken |
Water Quality |
6 Nov 2023 |
Observation: The muddy water which is caused from the water
spraying by the water sprinkler at the Portion A was found. The deposited
silt and grit are found under the tower crane at the Portion A. |
The contractor was recommended that the sandbag
barriers or bunds should be provided and established along the water safety
barriers at the Portion A. The muddy water should be collected from the
proper channel, final to the silt removal facility for treatment. The
deposited silt and grit under the tower crane at the Portion A should be
removed. |
6 Nov 2023 |
Observation: The slope surface at the Portion E4 should be
covered by impervious sheet properly. |
The contractor was advised to cover the exposed
slope surface by impervious sheet properly. |
|
20 Nov 2023 |
Observation: The slope surface at SBA without covering
impervious sheets properly was found. |
The contractor was recommended that the exposed
slope should be covered by impervious sheet. |
|
4 Dec 2023 |
Observation: The muddy water which is caused from the watering
at the Portion D was found. The
deposited silt and grit were found under the construction materials at the
Portion D |
The contractor was reminded that the muddy water
should be collected from the proper channel and final to the silt removal
facility for treatment. The deposited silt and grit under the construction
materials at the Portion D should be removed. |
|
18 Dec 2023 |
Observation: Insufficient silt fence around the
stockpile area at SBA was observed. |
The contractor was advised to provide and
maintain sufficient silt fence around the stockpile area in each layer,
ensuring that each layer effectively prevents sediment from entering the
surface water drainage system. |
|
18 Dec 2023 |
Reminder: The contractor was recommended that the exposed
slope surface at SBA should be covered by an impervious sheet in the short
term and should be shotcrete or other measurements for long-term surface
protection. |
The contractor was recommended that the exposed
slope surface at SBA should be covered by an impervious sheet in the short
term and should be shotcrete or other measurements for long-term surface
protection. |
|
27 Dec 2023 |
Observation: Dusty materials without covered by
impervious sheet at portion E4 was observed. |
The contractor was reminded that the dusty
materials should be covered with impervious sheet to prevent dust suppression. |
|
Waste
and Chemical Management |
3
Oct 2023 |
Observation: The stagnant water in drip tray should be cleared
of in Portion E4. |
The
contractor was reminded to clear the stagnant water in the drip tray. |
Parameter |
Date |
Observation
and Reminders |
Follow-up
Action Taken |
Waste and Chemical Management |
11 Oct 2023 |
Observation: The accumulated water was found at waste skip of
Portion A. |
The contractor
was advised to clear the accumulated water at the waste skip and the waste
skip should be covered with impervious sheet when rainstorm is forecast. |
11 Oct 2023 |
Observation: The drip tray should be placed under the chemical
container at Portion E4. |
The
contractor was recommended that the drip tray should be placed under the
chemical container at Portion E4. |
|
11 Oct 2023 |
Observation: The accumulated water was found at the drip tray
of SBA. |
The contractor
was advised to clear the accumulated water at the drip tray of SBA. |
|
16 Oct 2023 |
Observation: The overloading of enclosed bin at Portion A was
found. |
The
contractor was recommended to provide enough enclosed bins for collection of
general waste at Portion A and the frequency for collection of general waste
should be increased. |
|
16 Oct 2023 |
Observation: The chemical labelling should be provided
for lots of chemicals at SBA and oil drum at Portion E3-1. |
The contractor
was advised that the suitable chemical label should be placed on the chemical
containers. The chemicals should be placed in the proper location for storage. |
|
24 Oct 2023 |
Observation: The chemical containers were not placed on the
drip tray at Portion E3-1. |
The
contractor was recommended that the chemical containers should be placed on
the drip tray at Portion E3-1. |
|
24 Oct 2023 |
Observation: The general waste was found at the floor of
Portion E3-1. |
The contractor
was advised that the enclosed bins should be placed at the proper area of
Portion E3-1. |
|
30 Oct 2023 |
Observation: The storage area of chemical containers at Portion
E3-1 was without drip tray and other properly setup etc. to prevent the
chemicals rainfall entering and reduce heat from sunlight and avoid the risk
of land contamination. |
The
contractor was recommended to provide the properly storage area for chemicals
and chemical waste including chemical containers to prevent the chemicals
rainfall entering and reduce heat from sunlight and avoid the risk of land
contamination. |
|
6 Nov 2023 |
Observation: The food waste was found at the waste skip
of SBA. The general waste should be stored in the enclosed bins. |
The contractor
was advised that the additional enclosed bin should be increased at the SBA.
The type of waste label should be labelled at the surrounding of the
enclosed bins or waste skip for easily identify for on-site workers. |
Parameter |
Date |
Observation
and Reminders |
Follow-up
Action Taken |
Waste and Chemical Management |
20 Nov 2023 |
Observation: The general waste at the waste skip of SBA was
found. The contractor was reminded that the general waste includes food waste
should be stored at the enclosed bins. |
The enclosed
bin with clear label should be provided at SBA near the waste skip. |
20 Nov 2023 |
Observation: The overloading of accumulated waste at portion A
was found. |
The contractor
was advised that the enough waste skip should be provided, and the waste
should be clean regularly at portion A to prevent and avoid accumulated waste
place on the floor. |
|
4 Dec 2023 |
Observation: The general waste shall be removed and disposed
in the enclosed bin at Portion D. |
The contractor
was recommended to clean up the site regularly and provide enough enclosed
bin on-site to keep the site clean and tidy. |
|
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 Two general site inspection on 27
November and 11 December 2023 was conducted by Environmental
Protection Department-Regional Office (North) (EPD-RNG).
12 Environmental Non-conformance
12.1 Summary of Monitoring Exceedance
12.1.1
No Action / Limit Level exceedance impact
monitoring was recorded at designated monitoring stations during the reporting period. 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
Noise Monitoring
12.1.2
No exceedance of the Action and Limit Levels
was recorded at designated monitoring stations during the reporting period. 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
Surface Water Quality Monitoring
12.1.3
No exceedance of Action and Limit Levels of
surface was recorded at designated monitoring stations during the reporting
period. 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
Landfill Gas Monitoring
12.1.4 No exceedance of the Action and Limit Levels for were recorded at designated monitoring stations during the reporting period. The Summary of Landfill Gas Exceedance are shown in Table 12-4.
Landfill Gas Monitoring Station |
Portion A +50 mpD to 70 mpD
Platform |
||
Level Exceedance Parameters |
Action Level |
Limit Level |
|
CH4 |
Exceedance Date |
- |
- |
Exceedance
Count |
0 |
0 |
|
CO2 |
Exceedance Date |
- |
- |
Exceedance
Count |
0 |
0 |
|
O2 |
Exceedance Date |
- |
- |
Exceedance
Count |
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 No environmental complaint was recorded during the
reporting period. 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 |
||
Oct 2023 |
Complaint Date |
- |
- |
- |
- |
- |
No. of Complaint |
0 |
0 |
0 |
0 |
0 |
|
Nov 2023 |
Complaint Date |
- |
- |
- |
- |
- |
No. of Complaint |
0 |
0 |
0 |
0 |
0 |
|
Dec 2023 |
Complaint Date |
- |
- |
- |
- |
- |
No. of Complaint |
0 |
0 |
0 |
0 |
0 |
|
Total during the reporting period |
0 |
0 |
0 |
0 |
0 |
|
Accumulate of project |
1 |
0 |
5 |
0 |
0 |
Remarks: * equal to
non-project related after the investigation.
12.3.2 Cumulative complaint / enquiry log, Summaries of
complaints and enquiries & Environmental complaint reports are presented in
Appendix J.
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 period. No Action / Limit
Level exceedance for 1-hr & 24-hr TSP impact monitoring at AM1, AM2 &
AM3 was recorded during the reporting period.
14.1.2 Construction noise monitoring was carried out in
the reporting period. No Action / Limit Level exceedance for construction noise
monitoring at NM1a & NM2a was recorded during the reporting period.
14.1.4 Surface water monitoring was carried out in the
reporting period. No Action / Limit Level exceedance for surface
water monitoring at WM1 & WM2 was recorded during the reporting period.
14.1.5 Landfill Gas Monitoring was carried out in the
reporting period. No exceedance of Action and 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 1 post-transplantation
monitoring, and no post-translocation monitoring was conducted during the
reporting period.
14.1.8 13 environmental site inspections were carried out
in the reporting period. 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 during the
reporting period.
14.1.10 No non-compliance event was recorded during the
reporting period.
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 increase the water
spraying at the unpaved area and all assess roads to control the dust level.
The Contractor was advised that the effective dust screens,
sheeting or netting should be provided to enclose the scaffolding from the
ground floor level of the building, or a canopy provided from the first-floor
level up to the highest level of the scaffolding.
The Contractor was recommended to ensure all loaded
dump trucks should be covered by impervious sheeting.
The Contractor was advised to regularly water the
works area and provide enough sprayers to dampen the surface of construction
materials and the site, especially during the work process, to minimize dust
dispersion.
The Contractor was advised to regularly water the
uprooted trees to prevent dust dispersion and arrange for regular disposal to
avoid accumulation.
The Contractor was reminded that stockpiling of
dusty material should be covered by impervious sheet at Portion D to prevent
dust dispersion.
The Contractor was recommended that the exposed
slope surface should be covered by impervious sheets in the short term and
should be shotcrete, hydroseeding or other measurements for long-term surface
protection.
Construction Noise Impact
No specific observation was identified in the
reporting period.
Water Quality Impact
The Contractor was advised to conduct regularly
cleaning works to remove the accumulated silt in the channel.
The Contractor was advised to divide the surface
runoff to the silt removal facility for proper wastewater treatment.
The Contractor was recommended that the exposed
slope should be covered with impervious sheet properly in the short term and
the shotcrete for slope surface should be conducted in the long term.
The Contractor was recommended that the sandbag
barriers or bunds should be provided and established along the water safety
barriers at the Portion A. The muddy water should be collected from the proper
channel, final to the silt removal facility for treatment. The deposited silt
and grit should be removed regularly.
The Contractor was advised to provide and maintain
sufficient silt fence around the stockpile area in each layer, ensuring that
each layer effectively prevents sediment from entering the surface water
drainage system.
Waste and Chemical Management
The Contractor was reminded to clear the stagnant
water in the drip tray.
The Contractor was advised to clear the accumulated
water at the waste skip and the waste skip should be covered with impervious
sheet when rainstorm is forecast.
The Contractor was recommended that the drip tray
should be placed under the chemical container.
The Contractor was recommended to provide enough
enclosed bins for collection of general waste and the frequency for collection
of general waste should be increased.
The Contractor was advised that the chemicals
should be placed at the proper location for storage and the suitable chemical
label should be placed on the chemical containers.
The Contractor was recommended to provide the
properly storage area for chemicals and chemical waste including chemical
containers to prevent the chemicals rainfall entering and reduce heat from
sunlight and avoid the risk of land contamination.
The Contractor was advised that the additional
enclosed bin should be increased at the proper location to prevent and avoid
accumulated waste place on the floor. The type of waste label should be
labelled at the surrounding of the enclosed bins or waste skip for easily
identify for on-site workers.
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.