Drycleaners are the largest source of perchloroethylene emissions in the United States. Because of their locations and closeness to large numbers of people, they create a health hazard and may cause dizziness, nausea, headaches, and possibly cancer in people.

Best Practices for Dry Cleaners

  • • Use monitoring equipment to efficiently determine if there are any leaks or loss of solvent.
  • • Check the hoses, couplings, pumps, valves, and gaskets to detect leaks on a regular basis.
  • • Keep all containers covered to prevent evaporation and spillage.
  • • Keep lint screens clean.
  • • Extract the solvents from filters.
  • • Use water-based solvents when possible.
  • • Upgrade the equipment to use less hazardous solvents more efficiently.

Gas Stations and Gasoline Distribution Facilities

Leakage may occur from pipelines, bulk terminals, storage areas, transferring areas, tank trucks, rail cars, equipment, etc. Below the surface of gas stations, there are hundreds of thousands of underground gasoline storage tanks, many of them old, damaged, rusty, and poorly maintained, and all of them potentially can contaminate ground and surface water sources, and cause land and air pollution. Gas stations may have faulty, malfunctioning, or inadequately protected nozzles for dispensing gas. Other problems include gasoline spills, diesel spills, antifreeze and motor oil spills, etc. Ten toxic air pollutants including benzene and toluene are present in the gasoline vapor.

Best Practices for Gas Stations and Gasoline Distribution Facilities

  • • Use best available seals on storage tanks and pipeline facilities.
  • • Use proper fill pipes in the transfer of gasoline.
  • • Use vapor processors in all facilities where appropriate.
  • • Frequently test all parts of the distribution and storage system for leaks and make necessary corrections.
  • • Use appropriate housekeeping procedures to correct leaks and spills.
  • • Install new nozzles on gas dispensing equipment when needed.
  • • Use dry clean-up methods for spills of any kind and remove the material for hazardous waste disposition.
  • • Divert all wastewater of the gas station to a special place for decontamination.
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