; and (B) the Federal agency concurs, in writing, with the extension. (4) Deadline for issuance of authorizations (A) Materials published For a proposed agency action for which the materials described in subparagraphs (A) and (B) of paragraph (1) were published in the Federal Register, all authorizations required under any other Federal law shall be issued not later than 90 days after the date on which those materials were published. (B) Deemed to have no significant impacts For a proposed agency action that is deemed to have no significant impacts and for which the requirements of this title are deemed to have been fulfilled under paragraph (2)(A), all authorizations required under any other Federal law shall be issued not later than 90 days after the date on which the proposed agency action was so deemed under that paragraph. (c) Page limits An environmental assessment shall not exceed 75 pages, unless otherwise approved and established, in writing, by the head of the lead agency. . (f) Adoption of categorical exclusions Title I of the National Environmental Policy Act of 1969 ( 42 U.S.C. 4331 et seq. ) (as amended by subsection (e)) is amended by adding at the end the following: 110. Adoption of categorical exclusions A categorical exclusion established by a Federal agency for a category of proposed agency actions shall be adopted by all other Federal agencies and applied to any proposed agency action that is within the category of proposed agency actions for which the categorical exclusion was established. . (g) Efficient reviews Title I of the National Environmental Policy Act of 1969 ( 42 U.S.C. 4331 et seq. ) (as amended by subsection (f)) is amended by adding at the end the following: 111. Efficient reviews (a) Designation of lead agency (1) In general If there are 2 or more involved Federal agencies that have authority with respect to a proposed agency action, the involved Federal agencies shall determine, by letter or memorandum, which Federal agency shall be the Federal lead agency based on