; and of which such sums as become available from fees collected under section 217 of Public Law 104–303 shall be used to cover the cost of operation and maintenance of the dredged material disposal facilities for which such fees have been collected: Provided , That 1 percent of the total amount of funds provided for each of the programs, projects, or activities funded under this heading shall not be allocated to a field operating activity prior to the beginning of the fourth quarter of the fiscal year and shall be available for use by the Chief of Engineers to fund such emergency activities as the Chief of Engineers determines to be necessary and appropriate, and that the Chief of Engineers shall allocate during the fourth quarter any remaining funds which have not been used for emergency activities proportionally in accordance with the amounts provided for the programs, projects, or activities. Regulatory program For expenses necessary for administration of laws pertaining to regulation of navigable waters and wetlands, $200,000,000, to remain available until September 30, 2020. Formerly utilized sites remedial action program For expenses necessary to clean up contamination from sites in the United States resulting from work performed as part of the Nation's early atomic energy program, $150,000,000, to remain available until expended. Flood control and coastal emergencies For expenses necessary to prepare for flood, hurricane, and other natural disasters and support emergency operations, repairs, and other activities in response to such disasters as authorized by law, $35,000,000, to remain available until expended. Expenses For expenses necessary for the supervision and general administration of the civil works program in the headquarters of the Corps of Engineers and the offices of the Division Engineers