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 Spring lawn cleanups of a 1/3 to 1/2 acre lawn typically cost $200 to $500, not including extreme circumstances such as large tree removals or excessive water damage.2  Larger lawns of 1+ acres can easily exceed $1,000. 3  Removing a small lake or a large fallen tree from a property can easily double the total cleanup cost. Often times, however, companies will pro-rate a tree removal for rights to the wood (if of burnable quality). 2  Professional landscapers charge $30 to $50 per person, per hour. 3  An average crew consisting of 3 men will cost $90 to $150 per hour.