The Regional District of Nanaimo (RDN) is the first local government in British Columbia to be ISO 14001 Registered for Environmental Management and utilizes Intelex's Environmental Management System. RDN is one of the fastest growing regions in British Columbia, Canada with a population of more than 131,000 people and some of Vancouver Island's most livable communities. Located on Vancouver Island, Its boundaries stretch from Cassidy, just south of the Nanaimo airport, to Deep Bay in the north, and inland to Mount Arrowsmith. It also includes Gabriola and adjacent islands.