12. ENVIRONMENTAL MONITORING AND AUDIT REQUIREMENTS
e will include
12.1 Air Quality
Full compliance with the AQOs
during construction will likely achieved at all air sensitive receivers with
the requirements of mitigation measures.
Therefore, routine dust monitoring during construction is not required but
regular site audits are recommended to be conducted to ensure the
implementation of good site practice and appropriate mitigation measures.
Laying underground cables is a typical installation and CLP has established good trade practices for this work such that they minimise the construction noise and dust impacts. With the implementation of noise mitigation measures and scheduling the construction activities in front of the school, full compliance with the environmental criteria is expected to be achieved. Therefore, routine environmental monitoring for construction noise is not required during the construction phase. Regular site audits are however recommended to be conducted to ensure the effectiveness of these good site practices and appropriate mitigation measures.
12.3 Water Quality
and Adamasta Channel
Ground Water In order to ensure no ground
water loss during the cable tunnelling work, monitoring of ground water table
as specified in section 4 of the EM&A Manual and the monitoring
requirements as defined below will be specified in the Contract Document. The
monitoring requirements during construction period include:- · The contractor is required to
submit a layout plan showing the proposed locations groundwater monitoring
points to the satisfaction of EPD; · The contractor is required to
submit method statements for the proposed mitigation measures to prevent
further ground water inflow into the proposed cable tunnel to the satisfaction
of EPD, the mitigation measures are:- (i) pre-injection
system using approved cement grout and any equivalent approved methods and/or
proprietary products which could achieve the same performance and purpose; and (i) lining and
waterproof membrane for the cable tunnel. With the implementation of the
water quality mitigation measures, no exceedance of WQO of suspended solids is
anticipated at the monitoring locations. However, a robust environmental
monitoring and audit will be implemented to ensure that the general mitigation
measures are effective and the actual water quality impacts during the
installation of submarine cables and the reclamation works at Pui O Beach
are acceptable. Details of the water quality
monitoring will be presented in the Environmental
Monitoring and Audit Manual.
There are no monitoring and audit requirements for fisheries.
The implementation of the
terrestrial ecological mitigation measures stated in Section 6.3.5 should be checked as part
of the environmental monitoring and audit procedures during the construction
presented in the separate Environmental Monitoring and Audit Manual.
Constraints on controlling
to water quality to within acceptable levels during construction are expected
to also control impacts on marine ecology.
No unacceptable impacts are expected to occur during the operation phase
of the Project. Hence, monitoring and
auditing of marine ecological resources during the construction and operation
of the Project is deemed not necessary.
12.6 Cultural Heritage
If the avoidance of reaching the
`no dig’ zone below existing ground level at both Site A and Site B is not
possible, archaeological monitoring should be undertaken in this section during
construction to preserve the archaeological deposit, if any, by record and take
environmental samples for future study if necessary. The construction contractor should cooperate with a qualified
archaeologist appointed to undertake the monitoring to allow sufficient time
for recording archaeological deposit and take environmental samples if
12.7 Landscape and Visual
There is no monitoring requirement for the landscape and visual parameters.
12.8 Waste Management
It has been recommended that auditing of each waste stream should be carried out periodically by the contractor to determine if wastes are being managed in accordance with approved procedures and the site waste management plan. The audits should look at all aspects of waste management including waste generation, storage, recycling, treatment, transport, and disposal. An appropriate audit programme would be to undertake a first audit at the commencement of the construction works, and then to audit quarterly thereafter.
The measurement of similar
design circuits and calculations of EMF for the proposed
overhead lines and
underground cables demonstrated that the predicted values would
be well under the stipulated guideline limits issued by ICNIRP. In order to
verify compliance with the ICNIRP guideline levels, filed measurements will be
carried out within six months after commissioning of this circuit.
12.10 Marine Archaeology
There are no monitoring and audit requirements for the marine archaeological parameters.