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.
Page 4 GAO-08-841R Superfund Funding and Costs from commitments from responsible parties to conduct cleanup actions. Superfund program administration costs also declined from fiscal year 1999 through fiscal year 2007, from $143 million to $132 million.