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.
EPA in Indiana. USS Lead superfund site in East Chicago, Ind. EPA removed contaminated soil from 55 homes in zones 2 and 3 and deep cleaned inside 267 homes in zone 1. Next spring, EPA will resume excavation work.