1. a colorless oily fuming liquid, N2H4, used as a reducing agent and a jet-propulsion fuel. 2. a class of substances derived from this substance by replacing one or more hydrogen atoms by an organic group.
More than 150 companies and government entities could be asked to cover their share of the cleanup costs. On Nov. 18, the EPA submitted a nearly $1.4 billion cleanup option for the Portland Harbor Superfund site to the National Remedy Review Board, which serves as a peer review panel for Superfund projects.
1 Exxon Valdez oil spill, 1989: The clean-up of the oil spill cost an estimated $2.5 billion; recovery for settlements, $1.1 billion; and the economic loss (fisheries, tourism, etc.) suffered due to the damage to the Alaskan ecosystem was estimated at $2.8 billion;