10.1
This
section elaborates the recommended environmental monitoring and audit
(EM&A) requirements for the construction and operation phases of the
Project, based on the assessment findings of the various environmental
issues. The objectives of carrying out
EM&A for the Project include the following:
l Provide a database against which any short or long-term environmental impacts of the Project can be determined.
l Provide an early indication should any of the environmental control measures or practices fail to achieve the acceptable standards.
l Monitor the performance of the Project and the effectiveness of mitigation measures.
l Verify the environmental impacts predicted in the EIA Study.
l Determine project compliance with regulatory requirements, standards and government policies.
l Take remedial action if unexpected problems or unacceptable impacts arise.
l Provide data to enable an environmental audit.
10.2
Details
of the specific requirements are presented in a stand-alone EM&A
Manual.
Construction Phase
10.3
With implementation of the
proposed dust suppression measures stipulated in the Air Pollution Control
(Construction Dust) Regulation, good site practices and comprehensive dust
monitoring and audit, the dust impact would be further diminished.
10.4
Dust monitoring and auditing is
recommended in the EM&A Manual to ensure the efficacy of the control
measures.
Operation Phase
10.5
During operation of the new
crematorium, the air pollutants of concern include respirable suspended
particulate, total organic carbon, hydrogen chloride, carbon monoxide, mercury,
dioxins, nitrogen oxides and sulphur dioxide.
In accordance with the assessment results, the predicted air quality at
the nearby air sensitive receivers would comply with the AQOs and relevant air
quality guidelines with the implementation of recommended mitigation
measures. By limiting joss paper burning
activities through administration procedures and incorporation of flue gas
treatment system, nuisance arising from joss paper burning is anticipated to be
negligible.
10.6
In order to ensure compliance
with the legislation requirements, the on-line monitoring and periodic
measurement stipulated in the BPM12/2(06) – A Guidance Note on the Best
Practicable Means for Incinerators (Crematoria), published by EPD, will be
conducted. The monitoring of the above
air pollutants shall comply with the requirements of BPM and future Specified
Process License of new crematorium, to be issued by EPD under the APCO. Calibration on the monitoring equipment has to
be done by means of parallel measurements with the reference methods as agreed
by EPD
10.7
Continuous monitoring of the in-stack exhaust
gas and the process shall be carried out.
The continuous monitoring data should be transmitted instantaneously to
EPD by telemetry system or the real time and logged monitoring data shall be
accessible by EPD in such manner and format agreed with EPD. The monitoring
requirement should be agreed by EPD under the Specified Process Licence.
10.8 Periodic measurements of particulates, hydrogen chloride, carbon monoxide, gaseous and vaporous organic substances, mercury and dioxins would be conducted to confirm the compliance with the emission limits set out in Annex 1 of BPM12/2(06). The sampling frequency will be determined by EPD. The measurement results will be recorded, processed and presented in a summary report as agreed by EPD.
10.9
A commissioning test will be arranged prior to
the normal operation of the crematorium in order to evaluate the performance
and the emission of air pollutants to meet the requirements under the Specified
Process License.
Construction Phase
10.10
To
maintain uninterrupted cremation services, further site investigations are
recommended to be carried out after decommissioning and prior to demolition of
existing crematorium. Building structures asbestos investigation and dioxins ash
waste investigation are recommended around cremators, chimney, flues and surrounding
areas to confirm the quality and quantity of contaminated materials requiring
treatment and disposal.
10.11
A
supplementary site investigation plan, devised by consultants who are experienced
in the abatement of chemical waste, shall be submitted to EPD for approval
prior to the sampling works.
10.12
The
ETWB TCW No.19/2005 “Environmental Management on Construction” includes
procedures on waste management requiring contractors to reduce the C&D
material to be disposed of during the course of construction. Under this ETWB
TCW No.19/2005, the Contractor is required to prepare and implement an
Environmental Management Plan (EMP) and the Waste Management Plan (WMP) becomes
part of the EMP.
10.13
A
waste management audit will be carried out to ensure compliance with all
appropriate environmental protection and pollution control measures during the Construction
Phases 1 and 2 of the Project.
10.14
Details
of the waste management monitoring and audit requirements are provided in a
separate EM&A Manual.
Operation Phase
10.15
Bone ash and non-combustible residues, chemical waste, fly ash and
general refuse will be generated. No adverse impact would be anticipated with a
proper handling, storage, treatment and disposal methods. Monitoring is not considered necessary during
operation phase.
Construction
Phase
10.16
Since
the cremators were still in operation and the proposed trial pit location (TP-1)
was possessed by CEDD during the preparation of CAR & RAP, further site
investigation for TP-1 and the cremation rooms shall be carried out prior to
any demolition works. Upon completion of
further site investigation, a supplementary CAR and, as necessary, a
supplementary RAP shall be prepared to present the findings of the further site
investigations and recommended remediation action for EPD’s approval.
10.17
During
removal of the underground storage tank, appropriate precautions should be
taken to avoid contamination. After removal of the underground
storage tank, confirmatory soil sample(s) underneath the tank should be
collected and tested for TPH, VOCs and Pb to ensure that no contamination due
to fuel leakage.
10.18
The
contaminated soil identified at BH1 (
Operation Phase
10.19
In accordance with the findings of the EIA study, all the potential
contaminated areas identified will be remediated before commencement of any
earthworks. It would not pose any
significant and direct impacts to the Project during operation phase, therefore
no EM&A is considered necessary.
Construction
Phase
10.20
All
visual monitoring should carry out on site audit with authorize register
landscape architect (RLA) for supervision. The design, implementation, maintenance
and management of visual mitigation measures shall be checked monthly to ensure
that they are fully effectuated. Any potential conflicts between the proposed
visual measures and any other project works or operational requirements shall
also be recorded for the Contractor to resolve in early stage, without
compromising the intention of the mitigation measures.
l
to
check the status of the visual resources within, and immediately adjacent to,
the construction sites and works areas;
l
to
determine whether any change has occurred to the status of the visual resources
since the EIA;
l
to determine whether
amendments in the design of the visual mitigation measures are required for
those changes; and
l
to
recommend any necessary amendments to the design of the visual mitigation
measures.
10.21
The design, implementation and maintenance of visual mitigation measures will be checked
monthly to ensure that they are fully required. Details of the programme are provided in the EM&A Manual.
Operation Phase
10.22
All visual
mitigation measures shall be monitored monthly during the first year of the operation
phase to check the effectiveness of the mitigation measures. Details of the programme are
provided in the EM&A Manual.
Construction Phase
10.23 Construction noise impacts from this Project would be expected at the representative noise sensitive receivers (NSRs) identified in this EIA. By adopting silenced equipment and good site practices, the mitigated construction noise levels at the NSRs will comply with the daytime construction noise standard as set out in the EIAO-TM. Noise monitoring during construction phase will be recommended to verify that such mitigation measures would be implemented properly. Details of the programme are provided in the EM&A Manual.
Operation Phase
10.24
With the proper designs of the proposed crematorium, including provision
of acoustic louvers for fan rooms and general exhaust
fans for plant rooms as well as acoustic barriers for radiators, the potential operation
noise impacts at representative NSRs will be controlled within acceptable
levels. Operation noise monitoring will not be considered necessary. Nevertheless, noise
measurements at
Construction Phase
10.25
No
off-site water quality impact will be expected from the proposed construction
and demolition activities, marine water quality monitoring is not considered
necessary. It is recommended that
regular site inspections be undertaken to inspect the construction activities
and works areas in order to ensure that the recommended mitigation measures are
properly implemented. Monitoring of the
construction site effluent should be carried out in accordance with the WPCO
license which is under the ambit of regional office (RO) of EPD.
Operation Phase
10.26
The
Project would not cause any adverse water quality impact during operational
phase. No monitoring is therefore required.