25 CFR § 211.7 - Environmental studies.
(a) The Secretary shall ensure that all environmental studies are prepared as required by the National Environmental Policy Act of 1969 (NEPA) and the regulations promulgated by the Council on Environmental Quality (CEQ), found in 40 CFR parts 1500 through 1508.
(b) The Secretary shall ensure that all necessary surveys are performed and clearances obtained in accordance with 36 CFR parts 60, 63, and 800 and with the requirements of the Archaeological and Historic Preservation Act (16 U.S.C. 469 et seq.), the National Historic Preservation Act (16 U.S.C. 470 et seq.), The American Indian Religious Freedom Act (42 U.S.C. 1996), and Executive Order 11593, Protection and Enhancement of the Cultural Environment (3 CFR, 1971 through 1975 Comp., p. 559). If these surveys indicate that a mineral development will have an adverse effect on a property listed on or eligible for listing on the National Register of Historic Places, the Secretary shall:
(1) Seek the comments of the Advisory Council on Historic Preservation, in accordance with 36 CFR part 800;
(2) Ensure that the property is avoided, that the adverse effect is mitigated, or;
(3) Ensure that appropriate excavations or other related research is conducted and ensure that complete data describing the historic property is preserved.