14.1.1.1
This section further elaborates
the requirements of EM&A for the construction and operation phases of the
Project and associated works, based on the assessment results of the various
environmental issues.
14.1.1.2
The purpose of the EM&A
programme is to ascertain and verify the assumptions implicit to, and accuracy
of, EIA study predictions. The EM&A programme includes the scope of the
EM&A requirements for the Project to ensure compliance with the EIA study
recommendations, to assess the effectiveness of the recommended mitigation measures
and to identify any further need for additional mitigation measures or remedial
action.
14.1.1.3
Methodology and requirement of
monitoring work are detailed in a standalone EM&A Manual.
14.2.2.1
Since no adverse operational air
quality impact would be expected, no monitoring and audit is required during
operation phase. However, a commissioning test on deodorisers is recommended to
ensure the effectiveness of deodorization treatment.
14.3.1.1
The EIA study of the Project concluded that
with proper implementation of practicable mitigation measures, including use of
quiet construction plant, movable noise barriers, acoustic mats, and limitation of the number of
on-time operating PME, no adverse noise impact would be expected. An EM&A programme is recommended to be established according to
the expected occurrence of noisy activities. All the recommended mitigation measures
for daytime normal working activities should be incorporated into the EM&A
programme for implementation during construction. Details of the EM&A requirements are
provided in the EM&A Manual.
14.3.1.2
For the temporary modification
works at the merging point of Ma On Shan Road and temporary access haul road,
the re-provision of 220m length noise barrier with 10mPD on temporary access
haul road to replace the existing 150m length noise barrier with 9.2mPD to
10mPD on Ma On Sha Road would pose negligible difference in the overall traffic
noise level at the sensitive facades in the vicinity. Once the construction work is completed,
the noise barrier on the concerned road section of Ma On Shan Road would be
re-installed according to the existing configuration. Therefore, no monitoring and audit is
required.
14.3.2.1
The assessment has indicated
that the fixed plant noise from ventilation shaft, cooling tower at the
administration building, ventilation fan for chiller plant room and ventilation buildings of the CSTW would
comply with the EIAO-TM standards.
Having said that, commissioning tests for these fixed plant noise sources during the testing and commissioning stage are
recommended to verify the compliance of the EIAO-TM criteria.
14.4.1.1
The potential water quality
impact from land-based construction works can be controlled by the recommended
mitigation measures. No
water quality monitoring specific to the land-based construction works is thus
proposed. However, regular site
inspections should be undertaken during the construction phase to inspect the
construction activities and works areas in order to ensure the recommended
mitigation measures are properly implemented. Details of the
EM&A programme are presented in the standalone EM&A Manual.
14.4.2.1
Under normal operation of
THEES, the effluent from the CSTW and TPSTW would be transported to the
Victoria Harbour WCZ for discharge into the KTN (or called Kai Tak River after
completion of reconstruction and upgrading works). A 3-month water quality monitoring
programme is proposed for KTN at a frequency of once per month after the
commissioning of this Project. The
monitoring results should be compared with the routine river water quality
monitoring data collected by EPD to verify whether there is any potential water
quality impact at KTN as compared to that before the implementation of this
Project. In case adverse
impact on KTN is identified from the monitoring results, the operating
conditions of the treatment and THEES system should be investigated. In case adverse impact on KTN is
identified from this Project with reference to the effluent and water quality
monitoring results, the operating conditions of the treatment and THEES system
should be investigated, and DSD should extend the water quality monitoring
programme for at least three months or as agreed by the Director of
Environmental Protection. Details
of the monitoring programme are provided in the standalone EM&A Manual.
14.4.2.2
Monitoring of the treated
effluent quality from the relocated STSTW should also be carried out in
accordance with the WPCO license to ensure that the effluent quality would
comply with the design standards, which is under the ambit of RO of EPD.
14.4.3.1
Maintenance of the THEES tunnel
is required under the existing practice to ensure proper functioning and
integrity of the tunnel. During the
inspection or maintenance of the THEES tunnel, temporary suspension of the
normal THEES operation with treated effluent bypasses into the Tolo Harbour is
unavoidable to provide a safe and dry working zone. Thus, the necessity of effluent bypass
to Tolo Harbour during the THEES maintenance is not induced by this Project.
14.4.3.2
Marine water quality monitoring
is recommended in Tolo Harbour for THEES maintenance during both construction
and operational phases of this Project. A seven-month
baseline monitoring programme covering the period from June to December
(outside the algae blooming season) is proposed at a frequency of twice per
month to establish the baseline water quality conditions at selected monitoring
points. In case of THEES
maintenance during the construction and operational phases of this Project,
marine water quality in Tolo Harbour should be monitored at a frequency of 3
times per week throughout the maintenance period until the baseline water
quality is restored or at least 1 month after termination of the effluent
bypass (whichever is longer).
14.4.3.3
The monitoring programme for
THEES maintenance during the construction and operational phases of this
Project as discussed above shall continue in the first 3 years after
commissioning of this Project.
After 3 years of post-Project commission period, a review shall be
conducted by the Project Proponent to determine whether such monitoring shall
be continued. The review results shall be submitted to EPD, AFCD, WSD and other
relevant parties. Any amendment on the monitoring programme shall be agreed by
EPD, AFCD and WSD. Details of the monitoring programme and an event and action
plan for the THEES maintenance are provided in the standalone EM&A Manual.
14.4.4.1
Emergency discharges from the
Project would be the consequence of complete pump failure, interruption of the
electrical power supply or failure of treatment units. To provide a mechanism to minimise the
impact of emergency discharges and facilitate subsequent management of any
emergency, a contingency plan has been formulated to set out the emergency
response procedure and actions to be followed in case of equipment or sewage
treatment works failure. The
existing contingency plan is attached in Appendix 5.07. The plant operators of CSTW should carry
out necessary follow-up actions according to the procedures of this existing
contingency plan to minimise any impact on the identified WSRs due to emergency
bypass.
14.4.4.2
Marine water quality monitoring
is recommended in Tolo Harbour for emergency discharge during operational phase
of this Project. A one-year
baseline monitoring programme covering both dry and wet seasons is proposed at
a frequency of twice per month to establish the baseline water quality
conditions at selected monitoring points. In case of
emergency discharge during the operational phase of this Project, marine water
quality in Tolo Harbour should be monitored daily throughout the emergency
discharge period until the baseline water quality is restored or at least 2
weeks after termination of the discharge (whichever is longer).
14.4.4.3
The monitoring programme for
emergency discharge during the operational phase of this Project as discussed
above shall continue in the first 3 years after commissioning of this Project.
After 3 years of post-Project commission period, a review shall be conducted by
DSD to determine whether such monitoring shall be continued. The review results
shall be submitted to EPD, AFCD, WSD and other relevant parties. Any amendment
on the monitoring programme shall be agreed by EPD AFCD and WSD. Details of the
monitoring programme and an event and action plan for the emergency discharge
are provided in the standalone EM&A Manual.
14.5.1.1
Any environmental monitoring in
relation to land remediation is not required. However, regular site audit during
construction phase is required to ensure the implementation of proposed
mitigation measures effectively.
14.7
Ecological
Impact (Terrestrial and Marine)
14.7.1.1
Recommended mitigation measures proposed in the Section 8.8 (e.g.
avoidance of stream and riparian habitats; control of site runoff, reduction in
glare / lighting) should be monitored and audited monthly by local ecologist(s)
with at least 10 years relevant experience throughout the construction phase to
ensure proper implementation.
14.7.1.2
All flora
species of conservation importance (e.g. Cibotium
barometz, Canthium dicoccum, and Peristylus tentaculatus) should be protected as far as practicable. As a
mitigation measure, all the unavoidably affected individuals should be
preserved on site, or transplanted to nearby suitable habitat(s) prior to the
commencement of site clearance as a last resort. A Detailed Vegetation Survey should be
conducted by a suitably qualified botanist / ecologist to identify and record
the affected individuals prior to the commencement of any site clearance
works. A Protection and
Transplantation Proposal including the subsequent monitoring visit for the
affected individuals should be prepared and conducted by a suitably qualified
local ecologist / horticulturist with at least 10 years relevant
experience. The Proposal should be
submitted for approval from EPD at least
one month before works commencement.
14.7.1.3
Compensatory planting would
be provided within the works area, including the main portal, secondary
portal and along access road to compensate for the affected woodland
habitat. A detailed Woodland Compensation Plan should be prepared by
local ecologist / botanist with at least 10 years relevant experience to form the
basis of the proposed compensatory planting. The Woodland Compensation Plan should
include implementation details, management requirement, as well as monitoring
requirements (e.g. frequency and parameters) of the compensatory planting
area. Upon completion of compensatory
planting, monitoring by local ecologist / botanist with at least 10 years
relevant experience is recommended.
The monitoring frequency should be monthly within the first year after
planting. Parameters, such as health condition and survival rate of
the plant, presence of weedy plant, should be monitored. Maintenance works (e.g. irrigation,
weeding, pruning, control of pests and disease, replacement planting, repair of
damage, etc.) should also be conducted as necessary. The Woodland Compensation Plan should be
submitted for approval from EPD at least three months before commencement of
compensatory woodland planting.
14.7.1.4
It is anticipated that the
construction of rock caverns would not have adverse impacts on groundwater in
Nui Po Shan. Nonetheless,
precautionary measures should be taken in cavern design and construction to
minimize the potential impacts from the change in groundwater level. Surface water level or groundwater level
near the caverns will be closely monitored during the construction and
operation stage.
14.7.2.1
As described in Section 5 of EIA
Report, monitoring of water quality parameters would be required to ensure the
effectiveness of the mitigation measures.
14.7.2.2
The potential water quality
impact from the land-based construction works can be controlled by the
recommended mitigation measures.
Regular site inspections should be undertaken during the construction
phase to inspect the construction activities and works areas in order to ensure
the recommended mitigation measures are properly implemented. Details of the EM&A programme are
presented in Section 4 of the EM&A Manual.
14.7.2.3
During normal plant / THEES
operation, monitoring of the treated effluent quality from the CSTW should be
carried out in accordance with the WPCO license to ensure that the effluent
quality would comply with the design standards, which is under the ambit of RO
of EPD.
14.7.2.4
Marine water quality monitoring
is recommended in Tolo Harbour for THEES maintenance during both construction
and operational phases of this Project.
Marine water quality parameters such as SS, BOD, E.coli, chlorophyll-a, TIN, UIA and NH3-N should be
monitored. A seven-month baseline
monitoring programme covering the period from June to December (outside the
algae blooming season) is proposed at a frequency of twice per month to
establish the baseline water quality conditions at selected monitoring
points. In case of THEES maintenance
during the construction and operational phases of this Project, marine water
quality in Tolo Harbour should be monitored at a frequency of 3 times per week
throughout the maintenance period until the baseline water quality is restored
or at least 1 month after termination of the effluent bypass (whichever is
longer).
14.7.2.5
The monitoring programme for
THEES maintenance during the construction and operational phase of this Project
as discussed above shall continue in the first 3 years after commissioning of
this Project. After 3 years of
post-Project commission period, a review shall be conducted by DSD to determine
whether such monitoring shall be continued. The review results shall be submitted to
EPD, AFCD, WSD and other relevant parties.
Any amendment on the monitoring programme shall be agreed by EPD, AFCD
and WSD. Details of the monitoring
programme and an event and action plan for the THEES maintenance are provided
in Section 4 of the EM&A Manual.
14.7.2.6
Marine water quality monitoring
is also recommended in Tolo Harbour for emergency discharge during operational
phase of this Project. Marine water quality parameters such as SS, BOD, E.coli, chlorophyll-a, TIN, UIA and NH3-N should be
monitored. A one-year baseline monitoring programme covering both dry and wet
seasons is proposed at a frequency of twice per month to establish the baseline
water quality conditions at selected monitoring points. In case of emergency
discharge during the operational phase of this Project, marine water quality in
Tolo Harbour should be monitored daily throughout the maintenance period until
the baseline water quality is restored or at least 2 weeks after termination of
the discharge (whichever is longer).
14.7.2.7
The monitoring programme for
emergency discharge during the operational phase of this Project as discussed
above shall continue in the first 3 years after commissioning of this Project.
After 3 years of post-Project commission period, a review shall be conducted by
DSD to determine whether such monitoring shall be continued. The review results
shall be submitted to EPD, AFCD, WSD and other relevant parties. Any amendment
on the monitoring programme shall be agreed by EPD, AFCD and WSD. Details of
the monitoring programme and an event and action plan for the emergency
discharge are provided in Section 4 of the EM&A Manual.
14.8.1.1
No unacceptable residual
fisheries impact is expected from the Project. No monitoring program specific for
fisheries is required. However,
monitoring of water quality parameters would be required to ensure the
effectiveness of the mitigation measures.
14.8.1.2
The potential water quality
impact from the land-based construction works can be controlled by the
recommended mitigation measures.
Regular site inspections should be undertaken during the construction
phase to inspect the construction activities and works areas in order to ensure
the recommended mitigation measures are properly implemented. Details of the EM&A programme are
presented in Section 4 of the EM&A Manual.
14.8.1.3
During normal plant / THEES
operation, monitoring of the treated effluent quality from the CSTW should be
carried out in accordance with the WPCO license to ensure that the effluent
quality would comply with the design standards, which is under the ambit of RO
of EPD.
14.8.1.4
Marine water quality monitoring
is recommended in Tolo Harbour for THEES maintenance during both construction
and operational phases of this Project.
Marine water quality parameters such as SS, BOD, E.coli, chlorophyll-a, TIN, UIA and NH3-N should be
monitored. A seven-month baseline
monitoring programme covering the period from June to December (outside the
algae blooming season) is proposed at a frequency of twice per month to
establish the baseline water quality conditions at selected monitoring
points. In case of THEES
maintenance during the construction and operational phases of this Project,
marine water quality in Tolo Harbour should be monitored at a frequency of 3
times per week throughout the maintenance period until the baseline water
quality is restored or at least 1 month after termination of the effluent
bypass (whichever is longer).
14.8.1.5
The monitoring programme for
THEES maintenance during the construction and operational phase of this Project
as discussed above shall continue in the first 3 years after commissioning of
this Project. After 3 years of
post-Project commission period, a review shall be conducted by DSD to determine
whether such monitoring shall be continued. The review results shall be submitted to
EPD, AFCD, WSD and other relevant parties.
Any amendment on the monitoring programme shall be agreed by EPD, AFCD
and WSD. Details of the monitoring
programme and an event and action plan for the THEES maintenance are provided
in Section 4 of the EM&A Manual.
14.8.1.6
Marine water quality monitoring
is also recommended in Tolo Harbour for emergency discharge during operational
phase of this Project. Marine water quality parameters such as SS, BOD, E.coli, chlorophyll-a, TIN, UIA and NH3-N should be
monitored. A one-year baseline monitoring programme covering both dry and wet
seasons is proposed at a frequency of twice per month to establish the baseline
water quality conditions at selected monitoring points. In case of emergency
discharge during the operational phase of this Project, marine water quality in
Tolo Harbour should be monitored daily throughout the maintenance period until
the baseline water quality is restored or at least 2 weeks after termination of
the discharge (whichever is longer).
14.8.1.7
The monitoring programme for
emergency discharge during the operational phase of this Project as discussed
above shall continue in the first 3 years after commissioning of this Project.
After 3 years of post-Project commission period, a review shall be conducted by
DSD to determine whether such monitoring shall be continued. The review results
shall be submitted to EPD, AFCD, WSD and other relevant parties. Any amendment
on the monitoring programme shall be agreed by EPD, AFCD and WSD. Details of
the monitoring programme and an event and action plan for the emergency
discharge are provided in Section 4 of the EM&A Manual.
14.9.1.1
Potential landscape and visual
impacts have been carefully considered during the development of the Project
design to avoid impacts on important landscape resources as the first priority;
and locate, design and reduce the physical extent of works as far as possible,
as well as identify mitigation measures, so as to minimise the degree of visual
impacts and the impacts on existing landscape resources.
14.9.1.2
Mitigation measures proposed in
the EIA for the construction and operation phases are presented in Section 10.8.
The construction phase mitigation measures should be adopted throughout the
entire construction period while the mitigation measures for the operation
phase should be adopted during the detailed design stage and be built as part
of the construction works so that they are in place during the commissioning of
the Project.
14.9.1.3
Any potential conflicts among
the proposed mitigation measures, the Project works, and operational
requirements should also be identified and resolved at early stage. Any changes
to the mitigation measures should be incorporated in the detailed design.
14.9.2.1
A baseline review shall be
undertaken at the commencement of the construction contracts. The purpose of the review is:
·
to check the status of the
Landscape Resources and Character Areas within the construction works sites and
works areas and the VSRs within the visual envelope;
·
to determine whether any change
has occurred to the status of the Landscape Resources, Character Areas and VSRs
since the EIA;
·
to determine whether such
change warrants a change in the design of the landscape and visual mitigation
measures; and
·
to recommend any necessary
changes to the recommended landscape and visual mitigation measures in the
EIA.
14.9.3.1
Site audit should be undertaken
regularly during the construction phase of the Project to check that the
proposed landscape and visual mitigation measures are properly implemented and
maintained as per their intended objectives. Details of the EM&A requirements are
provided in the EM&A Manual.
14.10.1.1 No cultural heritage resources are located within the 50m study area
from the site boundary of the Project and no potential direct or indirect
impact to these cultural heritage resources is anticipated. On this basis, mitigation
measures, and monitoring and audit programme are not considered necessary.
14.11.1.1 Waste management will be the contractor’s responsibility to ensure
that all wastes produced during the construction of the Project are handled,
stored and disposed of in accordance with the recommended good waste management
practices, regulations and requirements.
Mitigation measures recommended in Section 12.6 should form the basis of
the site Waste Management Plan to be developed by the Contractor at the
construction stage.
14.11.1.2 It is recommended that waste generated from
construction activities should be audited periodically to determine if wastes
are being managed in accordance with approved procedures and the site
WMP. The audits should look at all aspects of waste management
including waste generation, storage, recycling, transport and disposal. Apart from site inspections, documents
including licences, permits, disposal and recycling records should be reviewed
and audited for compliance with the legislation and Contract
requirements. In addition, the routine site inspections should check
the implementation of the recommended good site practices and other waste
management mitigation measures.
14.11.1.3 A WMP, as part of the EMP should be prepared in accordance with
ETWB TC(W) No.19/2005 and submitted to the Engineer for approval. The recommended mitigation measures
should form the basis of the WMP.
The monitoring and auditing requirement stated in ETWB TC(W)
No.19/2005 should be followed with regard to the management of C&D
materials.
14.11.1.4 Adverse
environmental impacts generated from handling, storage and disposal of
waste are not expected from the operation of the Project with the
implementation of good waste management practices. Therefore, waste
monitoring and audit programme for the operation phase of the Project would not
be required.
14.12.1.1 Since no adverse health impact
is expected from the Project, EM&A program specified for health impact is
not required.
<End of Section 14>