Beneficial use structures are disclosed that include coal combustion residuals (CCR) mixed with liquids and other materials 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 a pumped hydroelectric facility. A method of constructing an impoundment includes: consolidating and compacting at least a portion of coal combustion residual (CCR) of a CCR installation; constructing an impoundment for water storage at least partially on top of the CCR installation; and applying engineering measures to the impoundment. An impoundment for water storage includes a berm and a barrier and applied engineering measures. The impoundment is constructed using at least a portion of coal combustion residual (CCR) of a pre-existing CCR installation.

Beneficial use structures are disclosed that include coal combustion residuals (CCR) mixed with liquids and other materials 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 a pumped hydroelectric facility. A method of constructing an impoundment includes: consolidating and compacting at least a portion of coal combustion residual (CCR) of a CCR installation; constructing an impoundment for water storage at least partially on top of the CCR installation; and applying engineering measures to the impoundment. An impoundment for water storage includes a berm and a barrier and applied engineering measures. The impoundment is constructed using at least a portion of coal combustion residual (CCR) of a pre-existing CCR installation.