(a) Integrating compliance with these regulations with the processes of environmental review carried out pursuant to the National Environmental Policy Act, and coordinating any studies needed to comply with these regulations with studies of related natural and social aspects;

(b) Designing determinations and agreements to satisfy the terms not only of section 106 and these regulations, but also of the requirements of such other historic preservation authorities as the Archeological and Historic Preservation Act, the Archeological Resources Protection Act, section 110 of the National Historic Preservation Act, and section 4(f) of the Department of Transportation Act, as applicable, so that a single document can be used for the purposes of all such authorities;

(c) Designing and executing studies, surveys, and other information-gathering activities for planning and undertaking so that the resulting information and data is adequate to meet the requirements of all applicable Federal historic preservation authorities; and