This Monthly Environmental Monitoring and
Audit (EM&A) Report is prepared for Contract No. SPW 02/2023 “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 35th Monthly EM&A
Report for the construction phase which summaries findings of the EM&A
programme during the reporting period from 1 February 2024 to 29 February 2024. As informed by the
Contractor, major activities in the reporting month were:
·
Ground investigation at SDB
·
Demolition at SDB
·
E&M works at CLP substation
·
ABWF and E&M works at PST
·
ABWF work and RC structure at
IW
·
ELS work at AGS
·
Erection temp. loading platform
at AGS
·
Erection temp. loading platform
at TTS
·
ELS work at TTS
·
ELS work at STB
·
Pumping test at Sludge Digester
no. 1-3
·
ELS work at Sludge Digester no.
1-3
·
E&M works at Biogas Holder
no. 1
·
E&M works at Biogas Holder
no. 1
·
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.
Two exceedances in Action Level were
recorded for the ecological monitoring of birds on 5 February 2024 (daytime)
and 28 February 2024 (night-time). These include significant decline in point
count method result for species diversity of all avifauna species, and for
species diversity of avifauna species with conservation importance.
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” and “SAS Thickener House-2” were submitted to
EPD respectively on 1st November 2021, 23rd November 2021, 29th April 2022, 6th
July 2022 and 19th June 2023. No contaminated soil and ground water was found
within the Main Storeroom & Workshop, Mechanical Workshop, Waste Storage
Area, SAS Thickener House-1 and SAS Thickener House-2, 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:
·
Demolition at SDB
·
Piling at SDB
·
ABWF work, E&M works and fixing GRC
panel at CLP Substation
·
ABWF and E&M works at PST
·
E&M work and RC structure at IW
·
Erection temp. loading platform at AGS
·
ELS work at AGS
·
Erection temp. loading platform at TTS
·
ELS work at TTS
·
ELS work at STB
·
RC Structure at STB
·
ELS work at Sludge Digester no. 1-3
·
E&M work at Biogas Holder no. 1
·
Pipeworks for interim scheme.