; 16 U.S.C. 500 ). 102. Establishment of Forest Active Management Areas and annual volume requirements (a) Establishment of Forest Active Management Areas Notwithstanding any other provision of law, the Secretary shall establish one or more Forest Active Management Areas within each unit of the National Forest System. (b) Deadline for establishment To the maximum extent practicable, the Secretary shall complete the establishment of Forest Active Management Areas not later than 60 days after the date of the enactment of this Act. (c) Purpose The purpose of a Forest Active Management Area is to provide a dependable source of 25-percent payments and economic activity through sustainable forest management for each beneficiary county containing National Forest System land included within that Forest Active Management Area. (d) Fiduciary responsibility The Secretary shall have a fiduciary responsibility to beneficiary counties to manage a Forest Active Management Area to satisfy the annual volume requirement established for that Forest Active Management Area. (e) Annual volume requirement (1) Deadline for establishment Not later than 30 days after the date of the establishment of a Forest Active Management Area or as soon thereafter as practicable, the Secretary shall establish the annual volume requirement for that Forest Active Management Area. (2) Collaborative adjustment authority The Secretary may establish the annual volume requirement for a Forest Active Management Area at a level below 50 percent of the sustained yield of that Forest Active Management Area if the lower level is developed and agreed upon through a collaborative process. (f) Size of forest Active Management area (1) Minimum size Except as provided in paragraph (3), the Forest Active Management Areas established within a unit of the National Forest System shall include not less than 50 percent of the National Forest System lands in that unit identified as commercial forest land capable of producing twenty cubic feet of timber per acre. (2)