An excerpt from Parks Canada document - 'Guiding Principles and Operational Policies' published in 1994 ( ISBN 0-662-21559-1 )
Section 4.3.2
Parks Canada will cooperate with the tourism sector towards fulfilling public needs for a broad range of essential services and facilities within the regions surrounding national parks, particularly as they relate to the practice of environmentally sustainable tourism. To avoid impacts on park ecosystems and to contribute to regional economic development, the location of commercial services and facilities should take place in adjacent communities. Parks Canada will locate its own administrative facilities outside the parks wherever possible provided that the location would have the least impact on a shared ecosystem.