Question

which of the following materials is typically used to line landfills and surface impoundments to prevent leakage of hazardous waste?
fiberglass panels
metal sheeting
gravel and sand layers
thick plastic liners

Explanation:

Thick plastic liners are impermeable and prevent hazardous waste leakage. Fiberglass panels may crack. Metal sheeting can corrode. Gravel and sand layers are porous.

Answer:

thick plastic liners