text: We have established a reserve for landÑll and environmental costs, which includes landÑll site Ñnal 
  capping, closure and post-closure costs. We periodically reassess such costs based on various methods and 
  assumptions regarding landÑll airspace and the technical requirements of Subtitle D of RCRA and adjust our 
  rates used to expense Ñnal capping, closure and post-closure costs accordingly. Based on current information 
  and regulatory requirements, we believe that our reserves for such landÑll and environmental expenditures are 
  adequate. However, environmental laws may change, and there can be no assurance that our reserves will be 
  adequate to cover requirements under existing or new environmental laws and regulations, future changes or 
  interpretations of existing laws and regulations, or the identiÑcation of adverse environmental conditions 
  previously unknown to us. See ""Management's Discussion and Analysis of Financial Condition and Results of 
  Operations Ì LandÑll and Environmental Matters'' and ""Risk Factors Ì Compliance with environmental 
  regulation may impede our growth.'' 
  
  **Liability Insurance and Bonding**
  
  The nature of our business exposes our company to the risk of liabilities arising out of our operations, 
  including possible damages to the environment. Such potential liabilities could involve, for example, claims for 
  remediation costs, personal injury, property damage and damage to the environment in cases where we may be 
  held responsible for the escape of harmful materials; claims of employees, customers or third parties for 
  personal injury or property damage occurring in the course of our operations; or claims alleging negligence in 
  the planning or performance of work. We could also be subject to Ñnes and civil and criminal penalties in 
  connection with alleged violations of regulatory requirements. Because of the nature and scope of the possible 
  environmental damages, liabilities imposed in environmental litigation can be signiÑcant. Our solid waste 
  operations have third party environmental liability insurance with limits in excess of those required by permit 
  regulations, subject to certain limitations and exclusions. However, we cannot assure you that the limits of 
  such environmental liability insurance would be adequate in the event of a major loss, nor can we assure you 
  that we would continue to carry excess environmental liability insurance should market conditions in the 
  insurance industry make such coverage costs prohibitive. 