 Arch Coal’s subsidiary operations reported a water compliance rate of 99.9 percent over a 10-year period between 2002 and 2012.In 2012, Arch Coal became the first energy company to earn the Conservation Legacy Award from the National Museum of Forest Service History.The Museum of Forest Service History awarded this honor “in recognition of [Arch Coal’s] commitment to the protection of natural resources, wildlife and water quality values during mining and restoration operations”.