text: The Company recognizes asset retirement obligations and the related amortization expense for closure 
  and post-closure (excluding obligations for Ñnal capping) using the units-of-consumption method over the 
  total remaining capacity of the landÑll. The total remaining capacity includes probable expansion airspace. 
  
  In general, the Company engages third parties to perform most of its Ñnal capping, closure and post- 
  closure activities. Accordingly, the fair market value of these obligations is based upon quoted and actual 
  prices paid for similar work. The Company does intend to perform some of its Ñnal capping, closure and post- 
  closure obligations using internal resources. Where internal resources are expected to be used to fulÑll an asset 
  retirement obligation, the Company has added a proÑt margin onto the estimated cost of such services to 
  better reÖect their fair market value as required by SFAS 143. These services primarily relate to managing 
  construction activities during Ñnal capping, and maintenance activities during closure and post-closure. If the 
  Company does perform these services internally, the added proÑt margin would be recognized as a component 
  of operating income in the period the obligation is settled. 
  
  SFAC 7 states that an estimate of fair value should include the price that marketplace participants are 
  able to receive for bearing the uncertainties in cash Öows. However, when utilizing discounted cash Öow 
  techniques, reliable estimates of market premiums may not be obtainable. In this situation, SFAC 7 indicates 
  that it is not necessary to consider a market risk premium in the determination of expected cash Öows. While 
  the cost of asset retirement obligations associated with Ñnal capping, closure and post-closure can be 
  quantiÑed and estimated, there is not an active market that can be utilized to determine the fair value of these 
  activities. In the case of the waste industry, no market exists for selling the responsibility for Ñnal capping, 
  closure and post-closure independent of selling the landÑll in its entirety. Accordingly, the Company believes 
  that it is not possible to develop a methodology to reliably estimate a market risk premium and has excluded a 
  market risk premium from its determination of expected cash Öow for landÑll asset retirement obligations in 
  accordance with SFAC 7. 