The National Park Service is required by the NPS Organic Act and the National Environmental Policy Act (NEPA) to plan and make informed decisions that help preserve park resources and values. The NPS carries out this responsibility by preparing studies and involving the public before making decisions that will affect the environment.

The Alaska Region Environmental Planning and Compliance Branch serves as the NPS Alaska Region focal point for all matters related to NEPA planning and compliance. The branch manages projects and provides guidance, technical assistance, training, and advice on NEPA to NPS staff to protect park resources and values for the enjoyment of future generations.