In addition to the federal requirements governing the planning and implementation of highway projects, a number of federal statutes and regulations have been promulgated to protect the environment. The responsibility and authority associated with these requirements are assigned to a number of federal agencies, or delegated to the states. A listing of key federal environmental requirements is provided in Table 1.8.
Environmental requirements are also included in a number of executive orders issued by the President of the United States that mandate policy on specific issues, including orders concerning the protection of wetlands, floodplains, significant cultural resources, disadvantaged and minority populations, marine resources, and energy supply. Relevant executive orders are included in Table 1.9.
