text: **Regulation**
  
  Our facilities and operations are subject to a variety of federal, state and local requirements that regulate 
  the environment, public health, safety, zoning and land use. Operating and other permits, licenses and other 
  approvals are generally required for landÑlls and transfer stations, certain solid waste collection vehicles, fuel 
  storage tanks and other facilities that we own or operate, and these permits are subject to revocation, 
  modiÑcation and renewal in certain circumstances. Federal, state and local laws and regulations vary, but 
  generally govern wastewater or stormwater discharges, air emissions, the handling, transportation, treatment, 
  storage and disposal of hazardous and non-hazardous waste, and the remediation of contamination associated 
  with the release or threatened release of hazardous substances. These laws and regulations provide 
  governmental authorities with strict powers of enforcement, which include the ability to obtain injunctions 
  and/or impose Ñnes or penalties in the case of violations, including criminal penalties. The 
  U.S. Environmental Protection Agency and various other federal, state and local environmental, public and 
  occupational health and safety agencies and authorities administer these regulations, including the Occupa- 
  tional Safety and Health Administration of the U.S. Department of Labor. 