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8.
SAFETY
Health
and safety aspects are of prime importance during site investigation
and implementation of remediation measures. As a precaution,
the site should be assumed to be contaminated. The specific
safety measures to be adopted depends on the nature and extent
of contamination, the site conditions and the regulations
on site safety requirements.
8.1
Risks during Site Investigation and Remediation
Risks
likely to be encountered during site investigation and remediation
include:
i) exposure
to and intake of toxic or harmful contaminants;
ii) fire
hazard; and
iii)
explosion.
Contaminants
may enter the human body through:
i) oral
ingestion;
ii) inhalation;
and
iii) skin
contact.
The most
commonly encountered contaminants of health concern are summarised
in Table 8.1.
Table
8.1 Contaminants of Health Concern during Site Investigation
& Remediation
|
Contaminant Category |
Examples |
| Inorganics |
Cyanides
Heavy metals |
| Organics |
Mineral
oils
Halogenated solvents
Polycyclic aromatic hydrocarbons
Volatile aromatic hydrocarbons |
| Minerals |
Asbestos |
Fire hazard
and explosion may be caused by:
i) presence
of inflammable materials;
ii) lightning;
iii)
burst pressure vessel;
iv) thermal
effect; and
v) combustion.
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