CONTACTS: Greer Ryan, Center for Biological Diversity, 812-345-8571, gryan@biologicaldiversity.org Rory McIlmoil, Appalachian Voices, 828-262-1500, rory@appvoices.org Raleigh, N.C. — The Center for Biological Diversity and Appalachian Voices filed a petition today to intervene in Duke Energy Carolinas’ application to substantially increase…