Opinion: Coal Ash Landfills

The massive coal ash retention pond breach in Tennessee has reignited debate about how best to dispose of coal ash. Too often, ash is buried in unlined cells. And, increasingly, opposition is being raised over the construction of unlined cells. Though it will cost more in the short run, the construction of proper waste containment cells, with liners and fully engineered, reinforced earth walls, seems to be the right solution.