Outdoor firing ranges are often contaminated with lead. When lead bullets and fragments from using a firearm settle on the soil, there are a number of elements that will determine the extent of the actual danger that it will have. The quicker the metal moves through the soil, the more risk it poses to the environment. The process whereby the lead becomes soluble or more soluble, depends on metal speciation, soil chemistry, water chemistry, and bullet composition and condition.
With the exception of metals mining and manufacturing, outdoor firing ranges put more lead into the environment than any other industry! The U.S. Military alone has cleaned up more than 700 shooting ranges across the country since 2005, when the EPA established best practices for remediation of these sites, and there currently over 1,800 commercial firing ranges registered with the National Shooting Sports Foundation.