This Section
describes the requirements for environmental monitoring and audit requirements
during the demolition of the CCPP.
With respect to the identified potential impacts and the nature
(including general site audits during demolition works) and frequency (monthly)
of the site audit to be undertaken, it is considered that real-time reporting
of the monitoring data is not applicable.
With respect to the nature of the environmental monitoring and audit
(EM&A) required for the Project, it is considered that a separate EM&A
Manual will not be required.
The Implementation Schedule, containing
the recommended mitigation measures, monitoring and audit requirements, and
implementation agent of the mitigation measures for the Project, is presented
in Annex C.
Monthly site audits will be undertaken
jointly by the site representative of GIC and the contractor during the
demolition works to ensure that dust control, construction waste and site
runoff and are managed in accordance with the good site practices described in Sections 3, 5 and 6 respectively.
With the implementation of the recommended
control measures described in the EIA and
those stipulated in the Air Pollution
Control (Construction Dust) Regulation, no adverse air quality impact is anticipated. The potential dust impact will be
minimal. No dust monitoring
will be considered necessary.
The Co-Combustion residues (including
bottom ash, fly ash and the residual dust collected during the cleaning
process) will be used as part of the raw materials for the cement
production. As the properties of
the residues are similar to the raw materials used for the cement production
and they contain negligible concentration of dioxins (in terms of part per
trillion) and very low concentrations of heavy metals, the reuse of the
residues for the cement production at the proposed rates will not affect the
air emissions of the cement plant.
No air quality monitoring will be required.
The site investigation indicates that the
contaminants analysed for all soil samples were either not detected or with
concentrations well below the RBRG
guideline values, the potential risk to the workers due to demolition
activities will be minimal.
After the demolition works, the Project
Site will be levelled using clean imported soil. The Project Site will remain as an open
area for the operation and future development of the GICP. It is currently proposed that the
Project Site will be rehabilitated into and restored to a grass lawn. The potential for human contact with any
underlying contamination (if any) in the future is considered low. It is therefore concluded that the risk
of future exposure to any contamination is deemed negligible. There will be no residual impacts due to
the Project after the decommissioning and demolition works have been completed.
It is therefore considered that no
environmental and audit requirement with respect to land contamination is
required.
It is recommended that monthly site audits
of the waste management practices be carried out during the Project to
determine if wastes are being managed in accordance with the good site
practices described in this EIA Report.
The audits should examine all aspects of waste management including
waste storage, recycling, transport and disposal.
The anticipated quantities of wastewater to
be generated during the Project will be small and all wastewater will be
treated in the on-site wastewater treatment plant. With the implementation of general good
site practices, the demolition of CCPP will not cause adverse water quality
impact. The effluent discharge from
the existing wastewater treatment plant will be monitoring in accordance with
the existing monitoring programme as required under the WPCO Licence. No
additional water quality monitoring is considered necessary.
Mitigation measures discussed in the
preceding sections are summarised in the Implementation Schedule in Annex C.