Boz Howard, 14, second from left, of Troop A401 of Dayton, Ohio, takes a bucket of limestone from C.J. Destefani, 14. Howard passed the bucket on to Logan Copsey, left, 13, to dump into the hydro generator. The limestone starts the process of leaching the metals (iron and aluminum in this instance) from the water of Morris Creek in a series of five polishing ponds created by the Morris Creek Watershed Association. Pictured to Destefani’s left is Erick Detweiler, 15.