text: Capital additions for 2002 include $72.6 million used to purchase equipment consisting primarily of 
  revenue-producing vehicles originally placed into service pursuant to an operating lease. 
  
  **Liquidity and Capital Resources**
  
  The major components of changes in cash Öows for the years ended December 31, 2004, 2003 and 2002 
  are discussed below. 
  
  *Cash Flows From Operating Activities.*Cash Öows provided by operating activities were $666.3 million, 
  $600.5 million and $569.7 million for the years ended December 31, 2004, 2003 and 2002, respectively. The 
  changes in cash provided by operating activities during the periods are due to the expansion of our business, 
  the timing of payments received for accounts receivable, and the timing of payments for accounts payable and 
  income taxes. 
  
  In December 2003, we received written approval from the Internal Revenue Service to exclude probable 
  expansion airspace from our calculation of landÑll amortization, depletion, and Ñnal capping, closure and post- 
  closure costs for tax purposes. As a result of this change, we recorded a tax receivable of approximately 
  $48.0 million which was collected or used to oÅset taxes payable during the year ended December 31, 2004. 
  Also during the year ended December 31, 2004, we collected a $23.0 million note receivable associated with a 
  divested business. 