text: During 2002, total available airspace increased by 22.6 million cubic yards primarily due to the opening of 
  a greenÑeld site in South Carolina, changes in engineering estimates and changes in design partially oÅset by 
  consumption. During 2003, total available airspace increased by 56.1 million cubic yards due to new 
  expansions undertaken, two landÑlls that were acquired during the year and changes in design partially oÅset 
  by airspace consumption and changes in engineering estimates. During 2004, total available airspace 
  decreased by 15.5 million cubic yards primarily due to airspace consumption partially oÅset by the acquisition 
  of a landÑll. 
  
  As of December 31, 2004, we owned or operated 58 solid waste landÑlls with total available disposal 
  capacity estimated to be 1.7 billion in-place cubic yards. Total available disposal capacity represents the sum 
  
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