available under this heading, $1,110,000 is rescinded: Provided further , That no amounts may be rescinded from amounts that were designated by the Congress as an emergency requirement pursuant to a concurrent resolution on the budget or the Balanced Budget and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. OPERATION AND MAINTENANCE (INCLUDING RESCISSION OF FUNDS) For expenses necessary for the operation, maintenance, and care of existing river and harbor, flood and storm damage reduction, aquatic ecosystem restoration, and related projects authorized by law