of Agriculture shall give priority to forest road decommissioning (as defined in section 212.1 of title 36, Code of Federal Regulations) and fish passage projects within a salmon conservation area. (b) Least adverse impact Notwithstanding any other provision of law, to satisfy the requirements of section 102(C)(iii) of the National Environmental Policy Act of 1969 (42 U.S.C. 4332(C)(iii)), any Federal action carried out with respect to a salmon conservation area identified under section 4 shall be the action that has the least adverse impact on such salmon conservation areas. (c) Transboundary pollution (1) Notification of Secretary of State If any salmon conservation area is determined by a Federal agency to be negatively impacted by transboundary pollution or other international actions originating in Canada, the head of the Federal agency shall notify the Secretary of State. (2) Action required Not later than 30 days after receiving a notification under paragraph (1), the Secretary of State shall consult with representatives from Canada to resolve the issue for which the Secretary was notified under such paragraph. (3) Referral to IJC If the issue for which the Secretary of State was notified under paragraph (1) is not resolved on a date that is 6 months after the date of notification under such paragraph— (A) the Secretary shall request to submit a joint referral to the International Joint Commission with Canada to research and provide recommendations to resolve such issue