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                                     Poison A
TECHNIQUE
EXCAVATION ... A trench or ditch may be excavated to contain leaking product.
     CONSEQ UENCE
       There may be increased potential for groundwater contamination in some cases.
     MITIGA TION
       Remove contained products as soon as possible to prevent spread of contamination. Use surface
       dikes or barriers where groundwater contamination is possible or line collection basin with
       compatible impervious material.
TECHNIQUE
PUMPING/VACUUM SUCTION ... Accumulated liquid pools may be recovered using appropriate
  hoses, pumps and storage containers or vacuum trucks.
     CONSEQUENCE
       Equipment that is incompatible with the spilled product may become damaged or develop leaks.
       High pressures may develop in equipment.
     MITIGA TION
       Use equipment that is compatible with spilled product and of suitable pressure capacity.
TECHNIQUE
NEUTRALIZATION     .. Application of an appropriate neutralization agent may modify the spilled
  product to a less hazardous substance.
     CONSEQUENCE
       Application and removal of chemical agents entail additional environmental risks.
     MITIGA TION
       Consult qualified experts for safe neutralization techniques.
TECHNIQUE
MECHANICAL REMOVAL... Contaminated soil and product residues may be removed by shovels,
  motorized graders and scrapers, loaders, bulldozers, and draglines.
     CONSEQ UENCE
       Removal equipment may become contaminated and present a hazard to later users.
       Incompatible equipment may be damaged or corroded. Improper storage of removed materials
       may result in future spread of contamination.
     MITIGATION
       Decontaminate all equipment after use. Use equipment compatible with spilled product. Store
       contaminated materials in safe and secure location.
TECHNIQUE
DILUTION ... The US DOT suggests that small spills of phosgene can be handled by flushing the area
  with flooding amounts of water.
     CONSEQUENCE
       Vapor or fume evolution may be vastly increased during and immediately after water
       application, thus increasing downwind and local hazards for a time.
     MITIGATION
       Some possibilities include knockdown of vapors or fumes via water fog or spray and temporary
       evacuation of downwind populations and other vulnerable resources. Proceed with caution.
       Consult qualified experts.

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