Soil-less method for the reclamation of disturbed areas

Hydraulic and earth engineering – Soil remediation – In situ contaminant removal or stabilization

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Details

210747, 405258, 588252, 588257, B09B 300

Patent

active

052498891

ABSTRACT:
A method is described for making an aggregate mixture (32) from by-products of waste disposal plants to reclaim disturbed area (10) without the use of either native soil or similar trucked in earth materials. The waste materials used include water plant lime sludges, coal ashes (bottom and precipitated fly), wood ashes (bottom and precipitated fly), crushed or chipped concrete waste from ready-mix concrete plants, and yard waste compost. A disturbed area is reclaimed using the ashes or concrete waste materials in varying combination with the lime sludge. The pH characteristics and low permeability of lime sludge are used to prevent any heavy metals and other potential pollutants in the ashes from leaching into the ground water. The yard waste compost material (38) is then layered over the lime sludge/ash/concrete aggregate mixture to serve as a final cover and to support the growth of permanent vegetation (40). The reclaimed area is in compliance with applicable environmental regulations and is completed without excavation or use of native, or transported soils and like earth materials.

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