The Secretaries of Agriculture and Interior shall, in consultation, review the definition of unprocessed timber under section
620e
(7) of this title for purposes of sections
620 to
620j of this title and, not later than 18 months after August 20, 1990, submit to the Congress any recommendations they have with respect to such definition. Specifically, the Secretaries shall report on the effects of maintaining 2 size standards under section
620e
(B)(ii) and (iii) of this title.