; $1,697,000,000 (reduced by $10,000,000) (increased by $10,000,000) (reduced by $10,000,000) (increased by $10,000,000) (reduced by $45,000,000) (increased by $45,000,000) (increased by $500,000), to remain available until expended; of which such sums as are necessary to cover the Federal share of construction costs for facilities under the Dredged Material Disposal Facilities program shall be derived from the Harbor Maintenance Trust Fund as authorized by Public Law 104–303