9.1
It
is predicted in the EIA Report that with the implementation of the recommended
mitigation measures, there would be no unacceptable or residual air quality, noise,
water quality environmental impacts arising from the contract-related
construction works.
9.2
There
is no major environmental deficiency in terms of dolphin, cultural heritage
and landscape and visual was recorded
during the site inspections throughout the construction period.
9.3
Throughout
the entire construction period, no non-conformance of implementation of
environmental mitigation measures was identified in weekly site inspections and
no Action/Limit Level
exceedances was recorded for air quality, water quality and dolphin monitoring
due to the Contract throughout the whole Contract. Only one Action
Level exceedance was recorded in construction noise and one successful prosecution was
received by the subcontractor on 20 October 2014 in the
reporting period. No case
of complaint was logged since 5 May 2017. These demonstrate no significant
environmental impacts arisen from the actual construction activities of the
Contract with the implementation of the recommended mitigation measures which
are in-line with the EIA predictions.
9.4
The
EM&A programme requires construction phase monitoring
for air quality monitoring, construction noise monitoring, water quality
monitoring, dolphin-related monitoring, weekly environmental site inspection,
bi-weekly monitoring for Landscape and Visual Impact and periodic inspection (every
three months) to the Sha Lo Wan (West) Archaeological Site. Timely
implementation of mitigation measures was carried out according to the
environmental monitoring data obtained during the Contract. The weekly site
inspections were effective to ensure the implementation and efficiency of the
mitigation measures. In addition, the recommendations made by the auditors of
the ET could continuously improve the house keeping of the Contractor and
maintain good site cleaning and tidiness. As a result, environmental nuisance
to the public could be reduced to a minimal.
9.5
Therefore,
the overall performance of the monitoring methodology adopted and environmental
management system in this Contract was effective.
9.6
Impact
air quality, construction noise, water quality and dolphin monitoring were
conducted at the designated monitoring stations in accordance with the updated
EM&A Manual.
1-hour TSP Monitoring
9.7
All
1-hour TSP monitoring was conducted as scheduled in the Contract.
9.8
No Action/Limit Level exceedances was recorded for
1-hour TSP monitoring due to the Contract throughout the whole Contract.
24-hour TSP Monitoring
9.9
All
24-hour TSP monitoring was conducted as scheduled in the Contract.
9.10
No Action/Limit Level exceedances was recorded for
24-hour TSP monitoring due to the Contract throughout the whole Contract.
Construction Noise
9.11 All
construction noise monitoring was conducted as scheduled in the Contract.
9.12 1
Action Level exceedance in construction noise was recorded for the complaints
received throughout the construction period due to loading/unloading of metal
plates and oxygen-acetylene set.
The Contractor was required to implement noise mitigation measures to
rectify the problem and was recommended to strengthen their site supervision
and provide training for the workers regularly to increase awareness of their
environmental responsibilities to minimize the noise impact to the nearby
residents.
9.13 No
Limit Level exceedance in construction noise was recorded due to the Contract
throughout the whole Contract.
Water Quality
9.14 All
water quality monitoring was conducted as scheduled in the Contract.
9.15 No
Action/Limit Level exceedance for dissolved oxygen, turbidity and suspended
solid was recorded due to the Contract throughout the whole Contract.
Dolphin
9.16 All
dolphin-related monitoring was conducted as scheduled in the Contract.
9.17 No
Action/Limit Level exceedance for dolphin monitoring was recorded due to the
Contract throughout the whole Contract.
9.18
The
construction phase EM&A programme for the
Contract commenced in February 2013 and was terminated since 24th October 2018 as per EPD’s letter to SOR
(EPD’s ref.: “( ) in AX(2) to EP771/E1/099” dated 30 November 2018), following substantial completion
of the major works.
9.19
The
EM&A programme was found to be effective in
monitoring impacts arising from the Contract. The findings of the environmental
monitoring program suggest that no adverse impacts on sensitive receivers were
brought about by the Contract. In conclusion the Contract was environmentally
acceptable in terms of air quality, noise levels, water quality, dolphin, cultural heritage and landscape and visual.
9.20
With
the success of the overall EM&A programme, the
deterioration of the environment caused by the Contract was cost-effectively
identified and necessary prompt effective mitigation measures were implemented
to avoid any unacceptable impacts.
9.21
Post-construction
monitoring for water quality was carried out after the termination of
Construction Phase EM&A Programme as per EPD’s letter to SOR (EPD’s ref.: “( ) in AX(2) to
EP771/E1/099” dated 30 November 2018) according to
updated EM&A Manual. Details of the Post-construction water quality
monitoring is provided in the report as shown in Appendix H.
9.22
In
addition, post-construction dolphin monitoring has also been started after
completion of construction according to updated EM&A Manual, Section
10.7.1, and the corresponding reports will be submitted separately.