11
Environmental Monitoring and Audit Requirements
11.1.1.1
This section provides a summary
of the requirements of environmental monitoring and audit (EM&A) for the
construction and operational phases of the Project and associated works based
on the assessment results of the various environmental issues. Details of the EM&A
requirements are provided in a stand-alone EM&A Manual.
11.1.1.2
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. The following sections summarise the recommended EM&A
requirements with the Implementation Schedule of Recommended Mitigation
Measures presented in Appendix
11.1.
11.2.1.1
EM&A for potential dust
impacts should be conducted during construction phase so as to check compliance
with the legislative requirements.
Details of the monitoring and audit programme are contained in a stand-alone
EM&A Manual.
11.2.1.2
Regular site audits for potential
dust impact are recommended to be conducted during the entire construction
phase of the Project so as to ensure the dust mitigation measures and the dust
suppression measures stipulated in Air Pollution Control (Construction Dust)
Regulation are implemented in order
11.2.2
Operation
Phase
11.2.2.1
No unacceptable adverse impact arising
from the Project is anticipated during the operation phase of the Project. Therefore, the EM&A works for the
operation phase are considered unnecessary.
11.3.1.1
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.
11.3.2.1
Road
traffic noise levels should be monitored at
representative noise sensitive receivers (NSR), which are in the vicinity of
the recommended direct mitigation measures, during the first year after road
opening. The purpose of the monitoring is to ascertain that the recommended
mitigation measures are effective in reducing the noise levels.
11.4
Water Quality Impact
11.4.1.1
The potential water quality impact from land-based construction works
can be controlled by the recommended mitigation measures. Nonetheless, regular site inspections are
recommended during the construction phase to ensure the recommended mitigation
measures are properly implemented.
11.4.2
Operation
Phase
11.4.2.1
The minor additional surface runoff will be
collected and screened by road drainage system before diverting into the storm
water drains. Besides, no significant change in flow regime and water quality
associated with the permanent structure is predicted. Hence, water quality
impact is anticipated to be insignificant, no monitoring or audit is required.
11.5
Waste Management Implications
11.5.1
Construction
Phase
11.5.1.1
It will be the
contractor’s responsibility to ensure that any wastes produced during the
construction and demolition works are handled, stored and disposed of in
accordance with recommended good waste management practices and relevant
regulations and other legislative requirements. The recommended mitigation
measures detailed in Section 6.6 should form the basis of the site Waste
Management Plan (WMP) to be developed by the Contractor in the construction
stage.
11.5.1.2
It is recommended that the waste arisings generated
during the construction activities should be audited regularly by the
Environmental Team (ET) to determine if wastes are being managed in accordance
with approved procedures. The audits should look at all aspects of on-site
waste management practices including waste generation, storage, recycling,
transport and disposal. Apart from site inspections, documents including
licenses, permits, disposal and recycling records should be reviewed and
audited for compliance with the legislation of the recommended good site
practice and other waste management mitigation measures.
11.5.2
Operation
Phase
11.5.2.1 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.
11.6.1.1
As land contamination impacts
are not anticipated, no environmental monitoring and audit programme would be
required.
11.7.1.1
The implementation of the
recommended mitigation measures should be subjected to monthly site audit
throughout the construction phase (refer to Appendix 11.1). In case
of non-compliance, the Contractor should be informed to strengthen the proposed
mitigation measures accordingly. Details
of environmental monitoring and audit (EM&A) requirements are discussed in
the separate EM&A Manual.
11.7.1.2
Considering the location of ardeid
night roosts along SMRC could vary, a pre-construction ardeid survey should be
conducted to ascertain the status and extent of the ardeid night roost no
earlier than 3 months before the commencement of construction works. Site check should be conducted covering the
ardeid night roosting site between Man Lai Court and HKHM to record the
location of ardeid roosting trees, the ardeid species and abundance utilizing
the night roosting site. A plan detailing the survey methodology should be submitted to and
approved by AFCD. The findings of the pre-construction ardeid survey should be
submitted and approved by AFCD. The findings of the pre-construction ardeid
survey will be reviewed to verify if any unwanted
direct encroachment of construction works to ardeid roosting tree would occur according to latest extent of
ardeid night roosting prior to the construction activities. In case there is any
unwanted direct encroachment to the ardeid roosting tree, remedial actions
should then be recommended, where appropriate, in consultation with relevant
authorities.
11.8.1
Construction Phase
11.8.1.1
The mitigation measures listed in Table 9.10 shall be adopted during
the construction phase. It is recommended that regular site inspections during
the construction phase should be undertaken to inspect the construction
activities and works areas in order to ensure the recommended mitigation
measures are properly implemented.
11.8.2
Operation Phase
11.8.2.1
The operation phase mitigation
measures listed in Table 9.11 shall be adopted during the detailed design and
be built as part of the construction works at the last stage of the
construction period so that they are in place at the date of commissioning of
the Project. However, it should be noted
that the full effect of the soft landscape mitigation measures would not be
appreciated for several years.
11.9.1
Construction
Phase
11.9.1.1
Pre and post condition survey
of Gatehouse of Pok Ngar Villa, Tsang Tai Uk, Li Cottage and Ng Yuen shall be
carried out. The survey reports shall be
submitted to AMO for record.
11.9.1.2
Monitoring of vibration,
settlement and tilting incorporated with a set of Alert, Alarm and Action (3As)
system shall be employed for Tsang Tai Uk, Gatehouse of Pok Ngar Villa, Li
Cottage, Lau Ancestral Hall, Ng Yuen, High Rock Christian Camp, No. 1, 2 and 3
First Street, as well as OLD1, OLD9, OLD11-21, OLD26-28 during the construction
phase. The proposed 3As limiting
criteria are presented in Table 10.5. Monitoring proposal including checkpoint locations,
installation details, response actions for each of the Alert/ Alarm/ Action
(3As) levels and frequency of monitoring should be
submitted for AMO's consideration. Installation of monitoring
checkpoints shall be carried out in great care and adequate protection shall be
provided so as to avoid unnecessary disturbance / damage to nearby historic
fabrics. Photo records of monitoring checkpoints shall
be submitted upon installation for AMO's records. Monitoring records should also be submitted
to AMO on regular basis and alert AMO should the monitoring reach 3As levels.
11.9.1.3
Excavation works should not
jeopardize stability of the historic buildings.
Foundation information of the historic buildings shall be verified on
site if needed, sufficient lateral support should be provided and de-watering
(if required) should be carried out with great cautions to control ground movement and change of ground water regime at the
heritage site.
11.9.1.4
Buffer zones with physical
barriers should be employed for Tsang Tai Uk, the Gatehouse of Pok Ngar Villa,
and OLD26. Substantial physical
barriers, such as hoarding or water-filled barriers, should be set up between
the project site and each of the three built heritage resources, Li Cottage, Ng
Yuen and OLD26. Protective covering of
plastic sheets shall be provided for Tsang Tai Uk, the Gatehouse of Pok Ngar
Villa, Li Cottage, and Ng Yuen, during construction to avoid impacts of dust
nuisance.
11.9.1.5
A detailed design proposal
including method of works and impact assessments for the four built heritage
including (a) Gatehouse of Pok Ngar Villa (new item); (b) Li Cottage (Grade 1);
(c) Ng Yuen (Grade 3); (d) Tsang Tai Uk (Grade 1) should be submitted. The
impact assessment should also include an analysis of settlement for Tsang Tai
Uk due to construction works.
11.9.1.6
No specific EM&A
requirement would be required for archaeology during construction phase. As a precautionary measure, AMO should be
informed immediately in case of discovery of antiquities or supposed
antiquities in the course of works, so that appropriate mitigation measures, if
needed, can be timely formulated and implemented in agreement with AMO.
11.9.2
Operation
Phase
11.9.2.1
No specific EM&A requirement would be required during operation
phase.