Complex sentence: The facility is on the grounds of the former Rocky Mountain Arsenal (a United States Army chemical weapons manufacturing facility) and more than 330 species of wildlife inhabit the Arsenal including deer, coyotes, white pelicans, owls and American bison.
Split into simpler sentences: The facility is on the grounds of the former Rocky Mountain Arsenal, a United States Army chemical weapons manufacturing facility. More than 330 species of wildlife inhabit the refuge, including deer, coyotes, white pelicans, owls, and American bison.