text: transportation, treatment, storage and disposal of hazardous and non-hazardous solid waste, and require 
  states to develop programs to ensure the safe disposal of solid waste in sanitary landÑlls. 
  
  Subtitle D of RCRA establishes a framework for regulating the disposal of municipal solid waste. 
  Regulations under Subtitle D currently include minimum comprehensive solid waste management 
  criteria and guidelines, including location restrictions, facility design and operating criteria, closure and 
  post-closure requirements, Ñnancial assurance standards, groundwater monitoring requirements and 
  corrective action standards, many of which had not commonly been in eÅect or enforced in the past in 
  connection with municipal solid waste landÑlls. Each state was required to submit to the U.S. EPA a 
  permit program designed to implement Subtitle D regulations by April 9, 1993. All of the states in which 
  we operate have implemented permit programs pursuant to RCRA and Subtitle D. These state permit 
  programs may include landÑll requirements which are more stringent than those of Subtitle D. 
  
  All of our planned landÑll expansions or new landÑll development projects have been engineered to 
  meet or exceed Subtitle D requirements. Operating and design criteria for existing operations have been 
  modiÑed to comply with these new regulations. Compliance with Subtitle D regulations has resulted in 
  increased costs and may in the future require substantial additional expenditures in addition to other costs 
  normally associated with our waste management activities. 