40 CFR § 1506.10 - Filing requirements.
§ 1506.10 Filing requirements.
(a) Agencies shall file environmental impact statements together with comments and responses with the Environmental Protection Agency (EPA), Office of Federal Activities, consistent with EPA's procedures.
(b) Agencies shall file statements with the EPA no earlier than they are also transmitted to participating agencies and made available to the public. EPA may issue guidelines to agencies to implement its responsibilities under this section and § 1506.11.