"Spent Ammo's Harm To Environment Is Debated"
"Lead in paint, gasoline and drinking water is prohibited as dangerous for health and the environment.
But the material is scattered in abundance outdoors when it comes to hunting grounds and firing ranges. Tons of lead from ammunition can accumulate on the ground over years and decades.
No federal law addresses lead containment at outdoor shooting ranges operating around the country. Tennessee also has no restrictions, though at least one range in Nashville lies in a floodplain beside the Cumberland River."Source: Nashville Tennessean, 02/12/2010