In order to have a bid considered responsive for a sale of timber from National Forest System lands, each bidder must certify that the bidder is eligible to purchase timber from National Forest System lands consistent with the Forest Resources Conservation and Shortage Relief Act of 1990 (16 U.S.C. 620, et seq.) and its implementing regulations at 36 CFR part 223, and that the bidder's timber purchase and export activities are in compliance with the timber export and substitution provisions of the Forest Resources Conservation and Shortage Relief Act of 1990 (16 U.S.C. 620, et seq.) and its implementing regulations at 36 CFR part 223.