62-701.340(3)(d), F.A.C., which states that Class III landfills can be exempt from some

or all requirements for landfill liners, leachate controls and water quality monitoring it

that no significant threat to the environment will result from the exemption. The

language in this rule results in the need for a liner in a Class III landfill to be determined

on a case-by-case basis by each department district office. The determination of each

case will be made by the Department in a way that will protect both human health and the

environment (ICF 1995).

 The average cost of disposal of C&D waste in Florida is $32.06/ton, ranging

anywhere from $5.00/ton in Okaloosa County to $92.00/ton in Monroe County (ICF

1995). This average cost of disposal is seemingly high, most likely because disposal

costs at private facilities, which are significantly lower, were not included.

Disadvantages of Unlined Landfills

 Leachate is formed when water washes over garbage in landfills, soaks through the

landfilled material, and exits the other side carrying contaminants. The fate of hazardous

constituents in C&D materials, such as acrylic acid, styrene, vinyl toluene, nitrile and

copper (Table 2-2) may include leaching into nearby groundwater aquifers or

volatilization into the surrounding air. As a result, potential impacts of C&D waste

disposal in unlined landfills may include drinking water contamination and fire hazards.