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Contract No. CM 04/2024 – Outlying Islands Sewerage Stage 2 – South
Lantau Sewerage Works – Environmental Team Services (2025 - 2027) |
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Monthly Environmental
Monitoring and Audit Report for: June 2025 Revision
2 |
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______________ Ting
Po Chung, Ivan Environmental
Team Leader Report
Date: 11 July 2025 |
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Content:
1.2 Environmental Monitoring & Audit Programme
1.3 Monthly Environmental Monitoring & Audit Report
2. Basic
project Information and Environmental Status
2.3 Works undertaken during the Reporting Month
2.4 Drawing Showing the Project Area, Environmental
Sensitive Receivers and Monitoring Locations
3.2 Environmental Mitigation Measures
3.3 Environmental Monitoring Requirements and Contractual
Requirements
3.4 Site Inspection and Audit Reports
4.3 Monitoring Date, Time, Frequency and Duration
5.1 Completion of Wqter Quality Monitoring
6.4 Monitoring
Date, Time, Frequency and Duration
8. Complaints,
Notification of Summons and Prosecution
10.3 Ecological
Impact Monitoring
10.4 Review of
the Reasons for and the Implications of Non-compliance
10.5 Summary of Action Taken in the Event of and
Follow-Up on Non-Compliance
Tables:
Table 2.1: Contact Details of Key Personnel
Table 3.1: Summary of Submission Status under
EP-538/2017
Table 3.3: Summary of Environmental Inspections
Table 4.1: Noise Monitoring Equipment
Table 4.2: Noise Monitoring Station
Table 7.1: Summary of
Quantities of Waste Material
Table 8.1: Cumulative Statistics on Complaints
Table 8.2: Summary of
Complaints
Table 8.3: Cumulative Statistics on Successful
Prosecutions
Table 9.1: Construction
Activities and Recommended Mitigation Measures in Coming Reporting 3 Months
Table 10.1: Summary of Ecological Impact Monitoring
Figures:
Figure
2.2 Contract Layout Plan
Figure
2.3 Locations of Noise Monitoring
Station
Figure
6.1 Mark up Figure 5.4i extracted
from approved EIA Report (AEIAR-210/2017)
Figure
6.2 Location Plan for Temporary
Holding Nursery
Appendices:
Appendix
4.1 Calibration Certificates for Noise
Meter and Acoustic Calibrator
Appendix
4.3 Noise Monitoring Results and
Graphical Presentations
This Monthly
Environmental Monitoring and Audit (“EM&A”) Report summarise project
monitoring and auditing data, with full interpretation illustrating the
acceptability or otherwise of any environmental impacts and identification or
assessment of the implementation status of agreed mitigation measures,
including monitoring results and findings of the EM&A Programme, along with
findings recorded during the site Inspections and audits, reports of
Complaints, Notifications of Summons and Successful Prosecutions, and other
necessary observations obtained within this reporting month of June 2025.
In the reporting
month, the principal work activities conducted are as follow:
Ÿ Excavation,
sewer laying, construction of manhole at Pui O Lo Uk Tsuen, South Lantau Road,
Chi Ma Wan Road;
Ÿ Trenchless drilling works (Chi Ma Wan Road);
Ÿ Excavation and ELS work at POSPS;
Ÿ Superstructure RC works at SSWSTW;
Ÿ E&M Installation at POSPS
Noise Monitoring
Noise Monitoring has
been conducted at 8 of the designated monitoring locations (N12a, N12b, N13,
N14, N15b, N16a, N16b, and N17) where construction works has been conducted
nearby during the reporting month.
During the reporting
period, school examinations were held from 4 to 6, 9 and 16 to 17 June 2025.
Accordingly, the noise limit for monitoring station N17-Bui O Public School was
temporarily reduced to 65 dB(A) on these examination.
No action or limit
level exceedance was recorded in construction noise level in this reporting
period.
Water Quality
Monitoring
Subsequent
to the completion of
marine work on 24 May 2025, water quality monitoring was considered completed
by 30 May 2025. No water quality monitoring is conducted in this reporting
month.
Should marine works
resume, water quality monitoring will be conducted in accordance with the
requirement stipulated in the EM&A Manual accordingly.
Ecological Impact
Monitoring
Transplanting of the
trees of Aquilaris sinensis was
completed on 26 April 2022. Maintenance works for trees in holding nursery have
commenced.
As per latest
version of PTP, 4 tree found (1 no. of Aquilaria sinensis and 3 nos. of Gmelina
chinensis) within the site of SSWSTW which are considered
to be the plant species with conservative importance for temporarily
transplanted to the nursery at Kam Tin and eventually be transplanted to Pui O
Pumping Station.
The weekly site
audit was carried out by ET include checking whether good site practices are
being properly implemented by the Contractor.
The extent of the
work site boundaries was checked by the ET during the weekly site audit.
Complaints,
Notification of Summons and Prosecution
No environmental
complaint was recorded in the reporting month.
No notification of
summons and successful prosecution regarding construction works were recorded
in the reporting month.
Reporting Changes
There are no
reporting changes in the reporting month.
Future Key Issues
The
construction works scheduled to be conducted in the coming 3 reporting months
are listed as follows:
·
Excavation,
sewer laying, construction of manhole at Pui O Lo Uk Tsuen, South Lantau Road, Chi
Ma Wan Road;
·
Excavation
and site formation at SSWSTW;
·
Trenchless
drilling works (Chi Ma Wan Road);
·
Excavation
and ELS work at POSPS;
·
Superstructure
RC works at SSWSTW;
·
Retaining
wall construction at SSWSTW;
·
E&M
Installation at POSPS
Key construction
activities for the next three months with the recommended mitigation measures
to be implemented are presented as follows:
|
Key Construction Works |
Recommended Mitigation Measures |
|
·
Excavation,
sewer laying, construction of manhole at Pui O Lo Uk Tsuen, South Lantau
Road, Chi Ma Wan Road ·
Excavation
and site formation at SSWSTW ·
Trenchless
drilling works (Chi Ma Wan Road) ·
Excavation
and ELS work at POSPS ·
Superstructure
RC works at SSWSTW ·
Retaining
wall construction at SSWSTW ·
E&M
Installation at POSPS |
·
Prevention of site runoff during heavy rainstorms. ·
Implementation of noise pollution control in accordance with
Construction Noise Mitigation Plan; ·
Dust control during dust generating works; ·
Adopt surface drainage and sediment control facilities for sewage
installation in village and public roads; ·
Adopt temporary drainage and sediment control facilities on Site; ·
Vehicle wheel-washing and body washing facilities should be provided
at the site entrance; ·
Regular water spraying on excavation works for dust control; and ·
Proper waste handling, recycling and storage. |
1.1.1
The Environmental Protection Department (“EPD”)
completed the Outlying Islands Sewerage Master Plan (“SMP”) Study in 1994 and
drew up a SMP for Lantau Island and other outlying islands. The proposed
sewerage works of the SMP were divided into 2 stages. The Stage 2 Works of the SMP were
subsequently reviewed by EPD under the Outlying Islands Sewerage Master Plan
Stage 2 Review (SMP Review Study) in 2001.
1.1.2
The proposed sewerage works for South Lantau
were further reviewed in 2008 under the Review of Sewerage Scheme for South
Lantau (Review Study). According to the Review Study, the proposed sewerage
works for South Lantau would serve the unsewered areas of Shui Hau, Tong Fuk,
Cheung Sha, San Shek Wan, Pui O and Ham Tin.
1.1.3
The Outlying Islands Sewerage Stage 2 – South
Lantau Sewerage Works, herein referred to as “the Project”, referred to the
sewerage works for South Lantau that would serve the unsewered areas of Shui
Hau, Tong Fuk, Cheung Sha, San Shek Wan, Pui O and Ham Tin.
1.1.4
The Project mainly comprises of the following
items:
a)
Construction of a secondary sewage treatment
works (“STW”) at San Shek Wan in South Lantau;
b)
Construction of sewage pumping station (“SPS”)
at Pui O, San Shek Wan, Cheung Sha, Cheung Fu Street, Shui Hau and Tong Fuk;
c)
Construction of about 1.4km of twin submarine
outfalls with a diameter of 350mm for the disposal of treated effluent from the
STW at San Shek Wan;
d)
Construction of about 10.1km of gravity sewers
with diameters ranging from 150mm to 375mm along South Lantau Road and Chi Ma
Wan Road and at Pui O; and
e)
Construction of about 3.1km of twin rising mains
with a diameter of 200mm to 250mm along South Lantau Road and Chi Ma Wan Road.
1.2.1
An Environmental Impact Assessment (“EIA”) was
subsequently prepared to review the potential environmental impact that would
be due to the Project during its construction works and operational works. The
EIA Report was submitted and approved on 24 April 2017, and Environmental
Permit (“EP”) No. EP-538/2017 was subsequently granted on 13 July 2017.
1.2.2
Environmental Monitoring & Audit
(“EM&A”) Programme is therefore implemented in accordance with the EM&A
Manual under the EIA Report.
1.2.3
Umwelt Consulting Limited (“UCL”) has been
appointed to work as the Environmental Team (“ET”) under EP No. EP-538/2017 to
implement the Environmental Monitoring and Audit (“EM&A”) programme as
stipulated in the EM&A Manual of the approved EIA Report for the Outlying
Islands Sewerage Stage 2 – South Lantau Sewerage Works (Register No.:
AEIAR-210/2017).
1.3.1
This Monthly EM&A Report summarise project
monitoring and auditing data, with full interpretation illustrating the
acceptability or otherwise of any environmental impacts and identification or
assessment of the implementation status of agreed mitigation measures,
including monitoring results and findings of the EM&A Programme, along with
findings recorded during the site Inspections and audits, reports of
Complaints, Notifications of Summons and Successful Prosecutions, and other
necessary observations obtained within this reporting month of June 2025.
1.3.2
The structure of this Report is detailed as follows:
a)
Section 1
Introduction –
Details the scope and
structure of the report.
b)
Section 2 Basic
project Information and Environmental Status –
Summarizes project organization and key personnel contact,
construction programme and works undertaken for the month. Construction
programme, works undertaken during the month with illustrations, drawing showing
the project area, environmental sensitive receivers and monitoring locations.
c)
Section 3
Implementation Status –
Advice on the
implementation status of
environmental protection and pollution
control/mitigation measures, as recommended in the EIA Report and summarised in the
updated
implementation schedule.
d)
Section 4 Noise
Monitoring –
Summarizes the
monitoring results obtained in the reporting period, including monitoring methodology,
name of laboratory and
equipment used and calibration details, parameters
monitored, monitoring
locations (and depth), monitoring date, frequency, and
duration, for impact noise monitoring.
e)
Section 5 Water
Quality Monitoring –
Summarizes the
monitoring results obtained in the reporting period, including monitoring methodology,
name of laboratory and
equipment used and calibration details, parameters
monitored, monitoring
locations (and depth), monitoring date, frequency, and
duration, for impact water quality monitoring.
f)
Section 6 Ecology –
Summarizes the audit
findings during the reporting month on ecological aspects.
g)
Section 7 Waste
Management –
Summarizes the status
of waste management, including the amount and types of waste generated, and
respective treatment approach.
h) Section 8 Report on Complaints, Notification of Summons and Successful Prosecutions –
Summarizes:
Ø Record
of all complaints received (written or verbal) for each media, including locations and nature of complaints
investigation, liaison and consultation undertaken, actions and follow-up procedures
taken, results and summary;
Ø Record
of notifications of summons and successful prosecutions for breaches of the current environmental
protection/pollution control legislations, including locations and nature of the breaches,
investigation, follow-up actions taken, results and summary;
Ø Review
of the reasons for and the implications of non-compliance, complaints, summons and prosecutions including review of
pollution sources and working procedures; and
Ø Description
of the actions taken in the event of non-compliance and deficiency reporting and any follow-up procedures related
to non-compliance.
i)
Section 9 Future Key
Issues –
An account of the future key issues as reviewed from
the
works programme and work method statements.
j)
Section 10
Conclusion –
Summarises the
findings conclusion drawn from the environmental monitoring and audit programme
in this reporting month.
2.1.1
Drainage Services
Department (“DSD”) is the project proponent and the permit holder of the
Project. For the construction phase of the Project, Contractor(s), ET and
Independent Environmental Checker (“IEC”) are appointed to manage and control
environmental issues. Key personnel and contact particulars are summarized in Table 2.1.
2.1.2
Upon conclusion of
Contract No: SD 15/2022 Outlying Island Sewerage Stage 2 – South Lantau Sewage
Works – Environmental Team Services (2023 – 2024), the subsequent contract,
Contract No. CM 04/2024 Outlying Islands Sewerage Stage 2 – South Lantau
Sewerage Works – Environmental Team Services (2025-2027), has been awarded to
Umwelt Consulting Limited (“UCL”) starting 1 February 2025. As such the environmental
team leader (“ETL”) appointed for the Project has been updated to Mr. Ting Po
Chung, Ivan since 1 February 2025. His contact details has been updated in Table 2.1.
2.1.3
There are no other
reporting changes in the reporting month.
Table 2.1: Contact
Details of Key Personnel
|
Party |
Role |
Post |
Name |
Contact No. |
Contact Fax |
|
Drainage Services Department |
The Engineer for the Contract |
Engineer |
Mr. KK Chan |
2594 7297 |
3104 6426 |
|
Binnies Hong Kong Limited |
Engineer’s Representative |
Resident Engineer |
Mr. Kevin Chan |
3529 3003 |
- |
|
Kwan Lee – Chun Wo Joint Venture |
Contractor |
Sub Agent |
Mr. Daniel Chu |
6737 6701 |
2744 6937 |
|
Environmental Supervisor |
Ms. Joey Pang |
6978 2876 |
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|
Environmental Supervisor |
Mr. Philip Wong |
6908 8920 |
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|
SMEC Hong Kong |
IEC |
IEC |
Ms. Kitty Lee |
3995 8140 |
3422 3631 |
|
Umwelt Consulting Limited |
ET |
ET Leader |
Mr. Ivan Ting |
3756 9590 |
3582 3310 |
2.2.1
The proposed sewerage
works will collect the sewage generated from the unsewered areas of Shui Hau,
Tong Fuk, Cheung Sha, San Shek Wan, Pui O and Ham Tin in South Lantau (i.e.
within the Project Catchment Area) and convey it to a proposed sewage treatment
works at San Shek Wan for treatment and disposal into outer bay of Pui O / Chi
Ma Wan via a submarine outfall.
2.2.2
The Project was divided into 3 contracts. The current contract, Contract No.
DC/2020/02 - Construction of San Shek Wan Sewage Treatment Works, Associated
Submarine Outfall and Pui O Sewerage Works (“the Contract”) would have the following implementations. The works site of the Contract
is also given in Figure 2.1.
2.2.3
The major components
of the Contract under Environmental Permit (“EP”) (EP No. EP-538/2017)
comprises:
a) Construction of a secondary sewage treatment works
(“STW”) at San Shek Wan in South Lantau;
b) Construction of a sewage pumping station (“SPS”) at
Pui O, San Shek Wan, Cheung Sha and Cheung Fu Street;
c) Construction of about 1.4km of submarine outfall
with a diameter of 350mm for the disposal of treated effluent from the STW at
San Shek Wan;
d) Construction of about 10.1km of gravity sewers with
diameters ranging from 150mm to 375mm along South Lantau Road and Chi Ma Wan road and at Pui O; and
e) Construction of about 3.1km twin rising mains with
a diameter of 200mm to 250mm along South Lantau Road and Chi Ma Wan Road.
2.3.1
In the reporting month, the principal work
activities conducted are as follow:
a)
Excavation,
sewer laying, construction of manhole at Pui O Lo Uk Tsuen, South Lantau Road, Chi
Ma Wan Road
b)
Trenchless
drilling works (Chi Ma Wan Road)
c)
Excavation
and ELS work at POSPS;
d)
Superstructure
RC works at SSWSTW;
e)
E&M
Installation at POSPS;
2.3.2
The locations of the works are shown in Figure
2.2.
2.4.1
Noise and water monitoring location plans with
sensitive receivers are shown in Figure 2.3 and Figure 2.4
respectively.
3.1.1
Mitigation measures according to the
environmental mitigation implementation schedule in Annex A of EM&A Manual
were generally implemented by the Contractor. Hence, the EM&A programme was
considered effective and shall be maintained.
3.2.1
Environmental mitigation measures mentioned the
EIA Report were weekly reviewed and recorded in Weekly Environmental Site Audit
Checklist. Also, a summary of the current status on
submissions and measures mentioned in the EP No. EP-538/2017 are shown in Table 3.1.
Table 3.1: Summary of Submission Status
under EP-538/2017
|
EP Condition |
Submission and Revision No. |
Date of Latest Submission |
|
2.10 |
Waste Management Plan (Rev. 5) (electronic copy) |
4 April 2022# |
|
2.11 |
Preservation and/or Transplantation Plan for Plant
Species of Conservation Importance (Rev. 23) |
9 September 2022# |
|
2.12 |
Compensatory Woodland Planting Plan (Rev. 23) |
15 May 2023^ |
|
2.13 |
Silt Curtain Deployment Plan (Rev. 11) |
1 June 2022# |
|
2.14 |
Landscape Mitigation Plan |
To be confirmed |
|
2.15 |
Construction Noise Mitigation Plan (Rev. 20) |
4 August 2022# |
Note:
^ Submission
was made to EPD
# Approval
from EPD was received
3.3.1
A summary of the current
status on licences and/or permits on environmental protection pertinent
to the Project is shown in Table 3.2.
Table 3.2: Summary of the Current Status
on Licences and/or Permits on Environmental Protection Pertinent to The Project
|
Permits and/or Licences |
Permit. No. / Account No. |
Issued Date |
Valid Period & Expiry Date |
Status |
|
Notification of Works Under APCO |
466408 |
14 Apr 2021 |
N/A |
Valid |
|
Wastewater Discharge Licence under Water Pollution
Control Ordinance |
SSWSTW: WT00039636-2021 |
30 Dec 2021 |
30 Dec 2021 to |
Valid |
|
POPS: WT00039820-2021 |
31 Dec 2021 |
31 Dec 2021 to |
Valid |
|
|
SSWSTW: Gravity Sewer & Raising Main:
WT00042613-2022 |
09 Jan 2023 |
09 Jan 2023 to |
Valid |
|
|
Billing account under Waste Disposal Ordinance |
Account No.: 7040411 |
05 May 2021 |
N/A |
Valid |
|
Registration as a Chemical Waste Producer |
0000-931-K3428-01 |
13 May 2021 |
N/A |
Valid |
|
Construction Noise Permit under Noise Control
Ordinance for SSWSTW |
GW-RS0084-25 |
28 Jan 2025 |
09 Feb 2025 to |
Valid |
|
Construction Noise Permit under Noise Control
Ordinance for POSPS |
GW-RS0310-25 |
26 Mar 2025 |
28 Mar 2025 to 26 Sep 2025 |
Valid |
Note: Only valid permits or permits under applications
within the reporting month are included.
3.4.1
Within this reporting month, weekly
environmental site inspections were conducted on 2, 9, 16, 23 and 30 June 2025. IEC attended
the SSEMC meeting held on 16 June 2025. The ET and contractor participated in
the holding nursery visit for transplanted trees on 30 June 2025.
3.4.2
No non-compliance was found during the site
inspections while reminders on environmental measures were recommended.
Reminders and/or Observations recorded during site inspections in this
reporting month are listed in Table 3.3.
Table 3.3: Summary of Environmental
Inspections
|
Inspection Date |
Reminder and Recommendations |
Close-out Date / Status |
|
2
June 2025 |
Pui O Sewage Pumping Station No Reminder and/or Observation San Shek Wan Sewage Treatment Works Reminder 1 The contractor is reminded to instruct workers to
sort waste properly. Reminder
2 The contractor is reminded to remove standing
water in the construction site. |
Contractor has rectified the reminders on 16 June
2025 |
|
9
June 2025 |
Pui O Sewage Pumping Station Reminder 1 The
contractor is reminded to store the chemical container properly. San Shek Wan Sewage Treatment Works No reminder and/or
observations |
Contractor has rectified the reminders on 16 June
2025 |
|
16
June 2025 |
Pui O Sewage Pumping Station Reminder 1 The contractor is reminded to properly store the
chemicals on site. San Shek Wan Sewage Treatment Works Reminder 2: The
contractor is reminded to properly store the chemicals on site. |
Contractor has
rectified the reminders on 23 June 2025 |
|
23 June 2025 |
Pui O Sewage Pumping Station No Reminder and/or Observation San Shek Wan Sewage Treatment Works Reminder 1: The contractor is reminded to maintain the
housekeeping. |
Contractor has rectified the reminders on 30 June 2025 |
|
30 June 2025 |
Pui O Sewage Pumping Station No Reminder and/or Observation San Shek Wan Sewage Treatment Works Reminder 1: The contractor is reminded to maintain the
housekeeping. Kam Tin Nursery Reminder 2: The contractor is reminded to properly install
the tree tag. |
To be verified in next inspection |
4.1.1
The impact noise monitoring should be carried
out at all the designated monitoring stations when there are project-related
construction activities undertaken within a radius of 300m from the monitoring
stations.
4.1.2
The monitoring station shall normally be at a
point 1m from the exterior of the sensitive receiver’s building façade and be
at a position 1.2m above the ground.
4.1.3
Façade measurements were made at the monitoring
locations. For free-field measurement, a correction factor of +3dB(A) will be
applied.
4.1.4
The battery condition was checked to ensure the
correct functioning of the meter.
4.1.5
Parameters such as frequency weighting, the time
weighting and the measurement time were set as follows:
a)
Frequency weighting: A,
b)
Time weighting: Fast,
c)
Measurement time set: continuous 5 mins
4.1.6
Prior and after to the noise measurement, the
meter was checked using the acoustic calibrator for 94dB (A) at 1000 Hz. If the
difference in the calibration level before and after measurement was more than
±1.0 dB (A), the measurement would be considered invalid and repeat of noise
measurement would be required after recalibration or repair of the equipment.
4.1.7
Noise measurements will be made in accordance
with standard acoustical principles and shall not be made in fog, rain, wind
with a steady speed exceeding 5m/s or wind with gusts exceeding 10m/s. The wind
speed shall be checked with a portable wind speed meter capable of measuring
the wind speed in m/s.
4.1.8
Noise monitoring was performed using sound level
meter at the designated monitoring locations. The sound level meters shall
comply with the International Electrotechnical Commission Publications 651:1979
(Type 1) and 804:1985 (Type 1) specifications. Acoustic calibrator shall be
deployed to check the sound level meters at a known sound pressure level. Brand
and model of the equipment is given in Table 4.1.
Table 4.1: Noise Monitoring Equipment
|
Equipment |
Brand and Model |
Serial Number |
Valid Until |
|
Integrated Sound Level Meter |
Rion - NL-52 |
01198668 |
13 Jan 2026 |
|
Acoustic Calibrator |
Rion - NC-75 |
34202223 |
13 Jan 2026 |
4.1.9
The calibration certificates of the noise
monitoring equipment are attached in Appendix 4.1.
4.1.10
The microphone head of the sound level meter was
cleaned with soft cloth at regular intervals.
4.1.11
The sound level meter and calibrator were
calibrated at yearly intervals.
4.1.12
The construction noise level shall be measured
in terms of the A-weighted equivalent continuous sound pressure level (“Leq”). Leq(30min)
should be used as the monitoring parameter. Supplementary information for data
auditing, statistical results such as L10 and L90 shall
also be obtained for reference.
4.1.13
For impact monitoring for construction of
village sewers / rising main, noise monitoring should be undertaken on weekly
basis. 1 set of Leq(30min) noise level as 6 consecutive Leq(5min)
between 07:00-19:00 hours on normal weekdays has been taken.
4.2.1
The noise monitoring stations for the Project
are listed and shown in Table 4.2. Impact noise
monitoring was conducted once per week at the noise monitoring stations with
construction works being conducted nearby. Noise monitoring has been conducted
at 8
noise monitoring stations N12a, N12b, N13, N14, N15b,
N16a, N16b and N17 in the reporting month.
4.2.2
During the reporting period, school examinations were held from 4 to 6, 9
and 16 to 17 June 2025. Accordingly, the noise limit for monitoring station
N17-Bui O Public School was temporarily reduced to 65 dB(A) on these examination. The standard noise limit of 70 dB(A)
remained applicable for all other days outside this examination period.
Table 4.2: Noise Monitoring Station
|
Monitoring Station ID + |
Monitoring Location |
Measurement Type |
Level (in terms of no. of floor) |
|
N01a |
Shui Hau Village |
Free-Field |
G/F |
|
N01c |
Shui Hau Village |
Free-Field |
G/F |
|
N03a |
Tong Fuk Village |
Free-Field |
G/F |
|
N05a |
Residences at Cheung Fu Street |
Free-Field |
G/F |
|
N07 |
Government Holiday Bungalows |
Free-Field |
G/F |
|
N08 |
Cheung Sha Ha Tsuen |
Free-Field |
G/F |
|
N10 |
Cheung Sha Sheung Tsuen |
Façade |
G/F |
|
N11b |
San Shek Wan – Ming Garden |
Free-Field |
G/F |
|
N12a * |
Lo Uk Tsuen |
Free-Field |
G/F |
|
N12b * |
Lo Uk Tsuen |
Free-Field |
G/F |
|
N13 * |
Pui O San Wai Tsuen |
Free-Field |
G/F |
|
N14 * |
South Lantau Community Centre |
Free-Field |
G/F |
|
N15b * |
Pui O Lo Wai Tsuen |
Façade |
G/F |
|
N16a * |
Residences at Ham Tin |
Façade |
G/F |
|
N16b * |
Residences at Ham Tin |
Free-Field |
G/F |
|
N17 * |
Bui O Public School |
Façade |
R/F |
NOTE:
+ Fine
adjustment of noise monitoring stations at all locations was proposed as per EP
Condition 3.1.
* Measurement
was conducted at the station in the reporting month.
4.3.1
For daytime construction work on normal
weekdays, monitoring of Leq(30min)
should be carried out at each station at 0700-1900 hours on normal weekdays at
a frequency of once a week. Impact monitoring schedule can be referred to Appendix
4.2.
4.4.1
Noise monitoring results measured in this
reporting period are reviewed and summarized. Details of noise monitoring
results and graphical presentation can be referred in Appendix 4.3.
4.4.2
No action or limit level exceedance was recorded
in construction noise level in this reporting period.
5.1.1
Subsequent to the completion of marine
work on 24 May 2025, water quality monitoring was considered completed by 30 May
2025. No water quality monitoring is conducted in this reporting month.
5.1.2
Should marine works
resume,
water quality monitoring will be
conducted in accordance with the requirement stipulated in the EM&A Manual
accordingly.
6.1.1
The weekly site audit
to be carried out by the ET should include checking whether good site practices
are being properly implemented by the Contractor
6.1.2
Impact monitoring of
the transplanted Aquilaris sinensis at
holding nursery and 1 retain tree of Aquilaris sinensis
in SSWSTW Project Site, establishment and after-establishment caring measures
of the compensatory mixed woodland to ensure the affected tree would not be
affected by any unacceptable construction works. The trees would be treated
with establishment works immediately after transplanting.
6.1.3
Site inspection at
the nursery was conducted on 30 June 2025. One reminder was recorded.
6.2.1
The extent of the
work site boundaries should be checked by the ET during the weekly site audit.
Any disturbance by the Contractor outside the works area especially any damage
to the vegetation and surrounding habitats outside the Project area shall be reported
to ER and IEC.
6.2.2
To identify any
unacceptable construction works for the trees of Aquilaris
sinensis during transplanting, establishment and after-establishment caring
measures of the compensatory mixed woodland.
6.3.1
As per latest version
of PTP, 4 tree found (1 no. of Aquilaria sinensis and 3 nos. of Gmelina
chinensis) within the site of SSWSTW (Figure 6.1) which are
considered to be the plant species with conservative importance for
temporarily transplanted to the nursery (Figure 6.2) at Kam Tin and eventually
be transplanted to Pui O Pumping Station.
6.4.1
The recommended good
site practices to be audited once every week as part of the site audit
programme. The weekly site audit to be carried out by the ET includes checking
whether good site practices are being properly implemented by the Contractor.
Results are recorded in Weekly Environmental Site Audit Checklist.
6.4.2
Monitoring programme
for post-transplantation was conducted on 30 June 2025 once per month.
6.5.1
The weekly site audit was carried out by ET
include checking whether good site practices are being properly implemented by
the Contractor.
6.5.2
The extent of the work site boundaries was
checked by the ET during the weekly site audit.
6.5.3
Results and findings of site audit in this
reporting month are listed in Table 3.3.
7.1.1
The quantities of
waste for disposal in the Reporting Period are summarized in Table 7.1. The Monthly Summary Waste Flow Table is shown in Appendix 7.1.
Table 7.1: Summary of
Quantities of Waste Material
|
Waste Type |
Quantity this month |
Quantity (the end of last month) |
Cumulative Quantity-to-Date |
|
Hard Rock and Large Broken Concrete (Inert), in
‘000m3 |
0 |
0 |
0 |
|
Reused in this Contract (Inert), in ‘000m3 |
0 |
0 |
0 |
|
Reused in other Projects (Inert), in ‘000m3 |
0 |
0 |
0 |
|
Disposal as Public Fill (Inert), in ‘000m3 |
0.06 |
0.07 |
29.61789 |
|
Metals, in ‘000kg |
26.0432 |
20.88 |
62.70697 |
|
Paper / Cardboard Packing, in ‘000kg |
0.0943 |
0 |
1.12488 |
|
Plastics, in ‘000kg |
0.0029 |
0 |
0.10306 |
|
Chemical Wastes, in ‘000kg |
0 |
0 |
0 |
|
General Refuses, in ‘000kg |
26.09 |
29.07 |
854.41 |
|
Marine Sediment (Type 1 – Open Sea Disposal), m3 |
0 |
0 |
1360.2 |
NOTE:
The inert waste disposal record
up to 7 April 2025 was based on the onsite record from the contractor instead
of the official record from the Mui Wo Public Fill Reception Facility due to
the maintenance of the weighting bridge. The subsequent inert waste disposal
record will adopt the recorded weight at the Mui Wo Public Fill Reception
Facility.
8.1.1
No environmental complaint was recorded in the
reporting month.
8.1.2
No notification of summons and successful
prosecution regarding construction works were recorded in the reporting month.
8.1.3
Cumulative statistic on complaints, summary of
complaints and successful prosecutions are summarized in Table 8.1, Table 8.2 and Table 8.3 respectively.
Table 8.1: Cumulative Statistics on
Complaints
|
Reporting Period |
No. of Complaints |
|
Project commencement to
the end of last reporting month |
3 |
|
This Reporting Month (June
2025) |
0 |
|
Total: |
3 |
Table 8.2: Summary of
Complaints
|
Date of Notification from
EPD |
Date of Complaint |
Description of Complaint |
Validity of Complaint |
Close-Out Date / Status |
|
26 May 2022 |
22 May 2022 |
A complaint is regarding
to noise nuisance from marine site of San Shek Wan, Lantau Island. |
Based on the
investigation, the works activities of marine works did not result in any
noise nuisance to Noise Sensitive Receivers (NSRs), noise nuisance from the
Project is unlikely to be valid. |
The interim report was
submitted to EPD in June 2022. EPD replied no further comments on the final
investigation report on 13 July 2022. |
|
23 Dec 2022 |
21 Dec 2022 |
A complaint is regarding
to the water quality for Pui O Beach, Lantau Island. |
Based on the
investigation, the works activities at POPS did not result in any water
quality impacts to the Pui O Beach. |
The interim report was
submitted to EPD on 4 Jan 2023. |
|
16 Aug 2024 |
15 Aug 2024 |
A complaint is regarding
to the damaged silt curtain and potential water quality impact. |
Based on the
investigation, no marine works since Dec 2023 till present, the land based works activities at POPS did not result in any
water quality impacts to the Pui O Wan |
The interim report was
submitted to EPD on 31 Aug 2024. |
Table 8.3: Cumulative Statistics on
Successful Prosecutions
|
Environmental Parameters |
Cumulative No. Brought
Forward |
No. of Successful
Prosecutions this month (Offence Date) |
Cumulative No.
Project-to-Date |
|
Air |
- |
0 |
0 |
|
Noise |
- |
0 |
0 |
|
Water |
- |
0 |
0 |
|
Waste |
- |
0 |
0 |
|
Other |
- |
0 |
0 |
|
Total |
- |
0 |
0 |
9.1.1
In coming reporting 3 months, the scheduled
construction activities are listed as follows:
Ø Excavation, sewer laying, construction of manhole at Pui O Lo Uk Tsuen, South Lantau Road, Chi Ma Wan Road
Ø Excavation and site formation at SSWSTW
Ø Trenchless drilling works (Chi Ma Wan Road)
Ø Excavation and ELS work at POSPS
Ø Superstructure RC works at SSWSTW
Ø Retaining wall construction at SSWSTW
Ø E&M Installation at POSPS
9.1.2
The scheduled
construction activities and the recommended mitigation measures for the coming
3 months are listed in Table 9.1. The major construction activities for the next 3 months are summarized
in 3 Months Rolling Programme – July 2025 to September 2025 in Appendix 9.1
Table 9.1: Construction
Activities and Recommended Mitigation Measures in Coming Reporting 3 Months
|
Key Construction Works |
Recommended Mitigation
Measures |
|
·
Excavation, sewer laying, construction of manhole
at Pui O Lo Uk Tsuen, South Lantau Road, Chi Ma Wan Road ·
Excavation and site formation at SSWSTW ·
Trenchless drilling works (Chi Ma Wan Road) ·
Excavation and ELS work at POSPS ·
Superstructure RC works at SSWSTW ·
Retaining wall construction at SSWSTW ·
E&M Installation at POSPS |
·
Prevention of site runoff during heavy rainstorms. ·
Implementation of noise pollution control in accordance with
Construction Noise Mitigation Plan; ·
Dust control during dust generating works; ·
Adopt surface drainage and sediment control facilities for sewage
installation in village and public roads; ·
Adopt temporary drainage and sediment control facilities on Site; ·
Vehicle wheel-washing and body washing facilities should be provided
at the site entrance; ·
Regular water spraying on excavation works for dust control; and ·
Proper waste handling, recycling and storage. |
10.1.1 Noise Monitoring has been conducted at 8 of the
designated monitoring locations where construction works has been conducted
nearby during the reporting month.
10.1.2 During the reporting period, school examinations
were held from 4 to 6,
9 and 16 to 17 June 2025. Accordingly, the
noise limit for monitoring station N17-Bui O Public School was temporarily
reduced to 65 dB(A) on these examination days. The standard noise limit of 70 dB(A) remained applicable for all other
days outside this examination period.
10.1.3 No action or limit level exceedance was recorded in
construction noise level in this reporting period.
10.2.1 Subsequent to the completion of marine work on 24 May 2025, water quality monitoring was considered completed by 30 May
2025. No water quality monitoring is conducted in this reporting month.
10.3.1 Transplanting of the trees of Aquilaris
sinensis was completed on 26 April 2022. Maintenance works for trees in
holding nursery have commenced.
10.3.2 As per latest version of PTP, 4 tree found (1 no. of
Aquilaria sinensis and 3 nos. of Gmelina chinensis) within the
site of SSWSTW which are considered to be the plant
species with conservative importance for temporarily transplanted to the
nursery at Kam Tin and eventually be transplanted to Pui O Pumping Station.
10.3.3 The weekly site audit was carried out by ET include
checking whether good site practices are being properly implemented by the
Contractor.
10.3.4 The extent of the work site boundaries was checked
by the ET during the weekly site audit.
10.3.5 Within this reporting period, holding nursery visit
for transplanted trees on 30
June 2025.
10.3.6 No non-compliance was found during the site
inspection while reminders on environmental measures were recommended. Results
and findings of these inspections in this reporting period are listed below in Table 10.1
Table 10.1: Summary of
Ecological Impact Monitoring
|
Inspection Date |
Reminder and
Recommendations |
Close-out Date / Status |
|
30 June 2025 |
The
contractor is reminded to properly install the tree tag. |
In Section 3.4.2: to be
verified in next inspection |
10.4.1 No environmental non-compliance was recorded in the
reporting month.
10.5.1 There was no particular action taken since no
non-compliance was recorded in the reporting period.
10.5.2
The performance of
the environmental management system of the reporting period was generally
satisfied. Mitigation measures according to the environmental mitigation
implementation schedule and the EIA were generally implemented by the
Contractor. Hence, the EM&A programme was considered effective and shall be
maintained.