The Planning and Environmental Linkage process seeks to develop subarea and corridor studies. This document has been developed to provide guidance, particularly to transportation planners and environmental planners, regarding how to most effectively link the transportation planning and National Environmental Policy processes.

Letter from A. F. Potter to Carl T. Hayden describing John H. Page's request to build a railway for the Canyon Copper Company as "impractical."

The Environmental Planning Group provides environmental services for transportation activities through compliance with regulatory requirements, providing the highest level of professional technical support and education to our agency and customers, while building cooperative relationships with other government agencies and the public.