| http://www.w3.org/ns/prov#value | - That area will be covered by an impermeable cap and contained by a slurry wall that extends 65 feet underground.The layer of soil and sediment that serves as the protecting layer for the Upper Floridan Aquifer, called the Hawthorn Group, will serve as the bottom of the containment area.Chemical treatments and mixtures including cement will be injected into the containment area to stabilize contami
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