TABLE OF CONTENTS
12. environmental
monitoring & audit requirements. 12-1
12.1 Introduction. 12-1
12.2 Air Quality Impact. 12-1
12.3 Noise Impact. 12-1
12.4 Water Quality Impact. 12-1
12.5 Waste Management Implications. 12-2
12.6 Land Contamination. 12-2
12.7 Ecological Impact. 12-2
12.8 Hazard to Life. 12-2
12.9 Landscape and Visual Impact. 12-2
12.10 Cultural Heritage Impact. 12-3
12.
environmental
monitoring & audit requirements
12.1.1.1 This section elaborates the requirements of environmental monitoring
and audit (EM&A) for the construction and operational phases of the
Project, based on the assessment results of the various environmental issues.
12.1.1.2 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.
12.1.1.3 The following sections summarise the recommended EM&A
requirements for this Project. Details
of the requirements are provided in a stand-alone EM&A Manual.
12.2.1.1 With the implementation of the mitigation measures as stipulated in
the Air Pollution Control (Construction
Dust) Regulation and good site practices, no adverse dust impact arising
from the construction works would be expected.
Nonetheless, dust monitoring is recommended during the construction
phase to ascertain that there would be no adverse dust impacts at the nearby
sensitive receivers. Weekly site audit
is recommended to be carried out during construction phase in order to ensure
the proposed mitigation measures are properly implemented.
12.2.1.2 No adverse air quality impact would be anticipated during operation
of the Project with the adoption of proper design and control measures. Nonetheless, it is recommended to conduct odour
measurement in terms of hydrogen sulphide (H2S)
at the deodoriser prior to operation to ensure the odour removal performance requirement can be met, and
monitoring of the exhaust odour emission rate of the deodoriser upon operation to ascertain the
validity of the air quality impact assessment in Section 3. In addition, odour patrol should be
carried out during the period of regular (generally once to twice every year) and any ad hoc maintenance or cleaning
of the deodorisation system when the deodoriser might not be working
at its full capacity as specified and assumed in assessment.
12.3.1.1 Noise monitoring is recommended for the construction phase of the
Project to ensure compliance with the daytime construction noise criteria. The implementation of the recommended
mitigation measures for daytime construction activities should also be audited
as part of the EM&A programme. Details
of the EM&A requirements are provided in the standalone EM&A Manual.
12.3.1.2 No adverse noise impact would be anticipated during operation of the
Project with the proposed mitigation measures in place. Commissioning test
should be conducted prior to operation of the Project to ensure fixed plant
noise impact would comply with the relevant noise standards. No EM&A requirement is therefore deemed
necessary.
12.4.1.1 The potential water quality impacts arising from the construction
activities for the sewerage works have been assessed. The primary concern with regard to water quality
would be earthworks and the control of construction site runoff and drainage. With the implementation of the recommended
mitigation measures, no unacceptable residual water quality impact would be
anticipated. Water quality monitoring
during the construction phase is therefore not considered warranted for the
Project. However, it was recommended
that regular audits be undertaken to ensure the recommended mitigation measures
are properly implemented.
12.5.1.1 Waste management would 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 and relevant legislation and waste management guidelines. The recommended mitigation measures should
form the basis of the site Waste Management Plan (WMP) to be developed by the Contractors
in the construction Phase. Regular
inspections should be conducted during construction phase to ensure proper
management and handling of waste, and appropriate implementation of the
mitigation measures.
12.5.1.2 It is expected that limited quantities of waste would be generated
from the operational of the Project and adverse environmental impacts would not
be anticipated with the implementation of good waste management practices. Hence, no EM&A requirement is considered
necessary during the operational phase.
12.6.1.1 Since no land contamination impact is anticipated, no EM&A
requirements is required.
12.7.1.1 Since the ecological impact is anticipated to be low and adverse
residual ecological impact is anticipated to be nil, no EM&A requirement is
required.
12.8
Hazard to Life
12.8.1.1 Potential hazard to life impacts arising from the construction and
operational phases of the Project were assessed. It was found that the individual risk and
societal risk of the two high pressure pipelines and the Sai O Offtake and
Pigging Station are of ‘acceptable’ for both construction stage and operational
stage. A review on the hazard to life
impact from the MOSWTW has concluded that MOSWTW’s risks to the Project is
insignificant. Thus, no specific
monitoring or auditing requirement is deemed necessary.
12.9.1.1 The detailed landscape and
engineering design of the Project would be undertaken so as to ensure
compliance with the landscape and visual mitigation measures described in Section 10.8.
12.9.1.2 A baseline review should be undertaken at the commencement of the construction
contracts to update the status of landscape resources, character areas and VSRs.
12.9.1.3 Implementation of the recommended mitigation measures should be
regularly audited during construction phase.
Details of the EM&A requirement are discussed in the separate
EM&A Manual.
12.10
Cultural Heritage Impact
12.10.1.1 Since no cultural heritage impact is anticipated, no EM&A
requirement is required.