| ABSTRACT |
Many man-made activities have resulted in discharge of harmful chemicals into our environment and affected the natural resources including soil, water resources and the ambient air quality. Since humans may be exposed directly or indirectly, the chances of adverse health effects are significant given that these hazardous chemicals can be in the form of solid, liquid or gases and able to enter into human body through ingestion, inhalation or adsorption. The monitoring of these chemicals is important since many have adverse health effects and some are classified as carcinogenic to humans (IARC, 1987). To provide a better understanding of the hazards and risks, a human health risk assessment is necessary to gauge the level of risk on humans. A probabilistic technique was incorporate in the risk assessment process which able to identify and estimate the level for risks of adverse health effects on humans. It can also assist scientists and regulators in identification of significant health hazards and determines realistic goals in managing the hazardous chemicals.
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