As indicated in Table 2, landfills are the most common mode of hazardous waste
disposal. It is also technologically considered as an unsophisticated disposal method. In
spite of the fact this method being a rustic one, care should be taken in designing a
proper landfill, especially for the hazardous waste disposal. Such landfill site, which is
known as the secured landfill (Fig. 2), must be properly designed and operated if public
health and environment are to be protected. Environmentally and technically sound
secured landfill must incorporate the following safeguards into its design: