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.
$3.34 - $4.98 per square foot (for demolition and removal of 4 slab). This quote takes into account the cost of concrete demolition. It includes removal of 4 concrete slab and cleanup (hauling and disposal).5.33 - $5.93 per square foot (4 inch reinforced slab on grade). This is an estimated quote for concrete foundation installation. Price also includes grading, 4 thickness, gravel base, rebar, and basic finishing. Does not include design, drawings, major excavation, piers, soil testing, columns, and deep foundations.