This Monthly Environmental Monitoring and Audit (EM&A) Report is prepared for Contract No. SPW 01/2025 “Environmental Team for Construction of Yuen Long Effluent Polishing Plant Stage 1”. Drainage Services Department (DSD) has appointed Aurecon Hong Kong Limited (Aurecon) to undertake the Environmental Team services for the project and implement the EM&A works.
This is the 63rd Monthly EM&A Report for the construction phase which summaries findings of the EM&A programme during the reporting period from 1 June 2026 to 30 June 2026. As informed by the Contractors, major activities in the reporting month were:
Contract
DC/2019/10:
·
Construction of Existing
Inspection Chamber and Inlet Effluent Pipes from Nam Sang Wai Sewage Pumping
Station
·
ABWF and T&C Works at IW
·
ELS works at PST Stage 2
·
RC works at SDB
·
ELS works at ADB and Underpass
·
RC works at AGS
·
RC and AWBF structure at TTS
·
ABWF and E&M works at STB
·
ELS work at Sludge Digester no.
4 -6 and UC4
·
E&M work at Sludge Digester
no. 1-3
·
Water test and rectification
work at Sludge Digester no. 1-3
·
E&M work at Biogas Holder
no.2
· Disposal of construction waste as indicated in Appendix I.
Contract
DE/2020/01:
· No site works in June
· Disposal of construction waste as indicated in Appendix I.
Breaches of Environmental Quality Performance Limits (AL levels)
No Action and Limit Level exceedance
was recorded for air quality monitoring and construction noise monitoring in
the reporting month.
No
Action and Limit Level exceedance was recorded for water quality monitoring in
the reporting month.
No Action / Limit exceedance was
recorded for noise levels at stations (NMS1 and NMS2) in
close proximity to the two active ardeid night roosts (ANR1 and ANR2)
observed within the Survey Area during the reporting month.
No Action / Limit exceedance for the
ecological monitoring of birds in the reporting month.
No
corrective actions were required according to the Event and Action Plans for
the Monitoring Parameters.
Land Contamination
Regular site inspection was carried out to
ensure the recommended mitigation measures are properly implemented. The signed
final Contamination Assessment Report (CAR) for “Main Storeroom &
Workshops”, “Mechanical Workshop”, “Waste Storage Area”, “SAS Thickener
House-1”, “SAS Thickener House-2”and “Screening Press House” were submitted to
EPD respectively on 1st November 2021, 23rd November
2021, 29th April 2022, 6th July 2022, 19th
June 2023 and 29th October 2024. No contaminated soil and ground
water was found within the Main Storeroom & Workshop, Mechanical Workshop,
Waste Storage Area, SAS Thickener House-1, SAS Thickener House-2 and Screening
Press House, and no remedial action is required for these locations.
Complaint Log
No
complaints were received in the reporting period.
Notifications of Summons and Successful Prosecutions
No notifications
of summons and successful prosecutions were received in the reporting period.
Reporting Change
There were
no reporting changes during the reporting month.
Future Key Issues
The main works will be anticipated in the next three months are as follow:
Contract DC/2019/10:
· Fixing GRC panel at CLP Substation
· Pipe works for Modification of
Existing Inspection Chamber and Inlet Effluent Pipes from Nam Sang Wai Sewage
Pumping Station
· ABWF and E&M works
at IW (Remaining area)
· RC works at PST Stage 2
· RC work at SDB
· RC work at Underpass
· RC work at ADB
· External UU works at site-wide
· RC structure at AGS and Water
Tightness Test
· RC structure at TTS and Water
Tightness Test and AWBF Works
· ABWF, E&M and T&C
work at STB
· ELS work at UC2 and UC3
· E&M, Water Tightness Test
and Lining work at Sludge Digester no. 1-3
· RC work at PP1
· ELS work at Sludge Digester
no. 4-6 and UC4
· E&M work at Biogas Holder no. 2
& 3
Contract
DE/2020/01:
· Installation of PV panels