4.1.1
No
off-site marine water quality impact would be expected from the Project and
given that there would not be any marine-based works for the proposed works,
water quality monitoring is not considered necessary. However, it is recommended that regular
site audits (at least once per week) be undertaken to inspect the construction
activities and works areas in order to ensure the recommended mitigation
measures are properly implemented. Proposed mitigation measures for containing
and minimizing water quality impacts are listed in the implementation schedule
given in Appendix A.
4.2
Site Audits
4.2.1
Implementation
of regular site audits (at least once per week) is to ensure that the
recommended mitigation measures are to be properly undertaken. It can also provide an effective control
of any malpractices and therefore achieve continual improvement of
environmental performance on site.
4.2.2
Site
audits shall include site inspections and monitoring audits.
Site
Inspections
4.2.3
Site
inspections shall be carried out by the ET and shall be based on the mitigation
measures for water pollution control recommended in the implementation schedule
as attached in Appendix A. In the event that the recommended
mitigation measures are not fully or properly implemented, deficiency shall be
recorded and reported to the site management. Suitable actions are to be
carried out to:
·
Investigate the problems and the
causes;
·
Issue action notes to the Contractor
which is responsible for the works;
·
Implement remedial and corrective
actions immediately;
·
Re-inspect the site conditions upon
completion of the remedial and corrective actions; and
·
Record the event and discuss with
the Contractor for preventive actions.
Monitoring
Audits
4.2.4
Monitoring
audits are to be undertaken to ensure that a valid discharge license has been
issued by EPD prior to the discharge of effluent from the Project site. Parameters included in the WPCO licence, will also be included in the
monitoring programme. The chemical testing of
water samples collected in the monitoring programme should be undertaken by a
Hong Kong Laboratory Accreditation Scheme (HOKLAS) accredited laboratory. The audit results reflect whether the
effluent quality is in compliance with the discharge license requirements and
that the recommended water quality mitigation measures are properly
implemented. In case of non-compliance, suitable
actions should be undertaken to:
·
Notify the site management for the
non-compliance;
·
Identify the sources of pollution;
·
Check the implementation status of
the recommended mitigation measures;
·
Investigate the operating conditions
of the on-site treatment systems;
·
Implement corrective and remedial
actions to improve the effluent quality;
·
Increase monitoring frequency until
the effluent quality is in compliance with the discharge licence requirements;
and
·
Record the non-compliance and
propose preventive measures.