; for surveys and detailed studies, and plans and specifications of proposed river and harbor, flood and storm damage reduction, shore protection, and aquatic ecosystem restoration projects, and related efforts prior to construction; for restudy of authorized projects; and for miscellaneous investigations, and, when authorized by law, surveys and detailed studies, and plans and specifications of projects prior to construction, $142,990,000, to remain available until expended: Provided, That the Secretary shall not deviate from the work plan, once the plan has been submitted to the Committees on Appropriations of both Houses of Congress: Provided further , That of the unobligated balances from prior year appropriations available under this heading, $11,413,000 is rescinded: Provided further , That no amounts may be rescinded from amounts that were designated by the Congress as an emergency requirement pursuant to a concurrent resolution on the budget or the Balanced Budget and Emergency Deficit Control Act of 1985. CONSTRUCTION (INCLUDING RESCISSION OF FUNDS) For expenses necessary for the construction of river and harbor, flood and storm damage reduction, shore protection, aquatic ecosystem restoration, and related projects authorized by law; for conducting detailed studies, and plans and specifications, of such projects (including those involving participation by States, local governments, or private groups) authorized or made eligible for selection by law (but such detailed studies, and plans and specifications, shall not constitute a commitment of the Government to construction); $1,854,688,000, to remain available until expended; of which $114,775,000, to be derived from the Harbor Maintenance Trust Fund, shall be to cover the Federal share of construction costs for facilities under the Dredged Material Disposal Facilities program