Definition 1.A basin in which suspended matter is removed either by quiescent settlement or by continuous flow at high velocity and extended retention time to allow deposition. Reference 1.MGH;
Definition ash pond - an impoundment or surface impoundment used to store or dispose of ash,primarily from the combustion of coal. A type of waste management facility consisting of an excavated, a dammed or diked reservoir in which coal ashes are stored for future removal or disposed of as a slurry or sludge. Reference "< http://www.acaa-usa.org/PDF/ACAA%20Glossary%20of%20Terms%20-%20April%202003.pdf >"