43 U.S.C. § 2623 — Additional sum from surplus for meeting payments due from insufficient annual receipts; maximum aggregate of decennial payments; covering of excess receipts into general fund of Treasury

If, during any one year, 75 per centum of the receipts are insufficient fully to meet the payments due the counties under this section, the Secretary of the Treasury, upon certification by the Secretary of the Interior, can pay an additional sum from any surplus of 75 per centum of prior year receipts: Provided, however , That in no event must the aggregate of payments during any ten-year period commencing with the period beginning July 1, 1940 , exceed 75 per centum of the receipts deposited in the Treasury to the credit of the Coos Bay Wagon Road grant fund for such period: Provided further , That at the end of each ten-year period, any balance of the 75 per centum not required for payments to the counties must be covered into the general fund of the Treasury of the United States.