Benefical use structures

Abstract

Beneficial use structures are disclosed that include coal combustion residuals (“CCR”) mixed with water and a binder to form a structural material, and adapted to be compacted for use in the formation of the beneficial use structure. Various structures having beneficial uses are described, including compressed air storage facilities and a pumped hydroelectric facility, including such a facility adapted for use with a lock system of a waterway.

Dependencies are inferred from the claim text.