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                                                   Poison A

       WATER SPILL
       TECHNIQ UE
       STOP USE ... Notify downstream industrial, municipal, and public users of contaminated water to stop or monitor
         water intake. Liquid phosgene will sink in water while simultaneously reacting and possibly boiling if the water is
         warmer than the boiling point of phosgene. Under certain circumstances, when the water is cold and/or the
         phosgene is released underwater, pools of liquid phosgene may collect on the bottom and slowly react to form
         hydrochloric acid and carbon dioxide. It may be safest in many cases to allow the phosgene to react completely with
         the water and not make any attempt of product recovery.
            CONSEQ UENCE
               Alternative water supplies may be needed to accommodate users.
            MITIGATION
               Provide alternative water supplies as needed until water supply is declared safe.
       TECHNIQUE
       CONTAINMENT DIKES ... Water with dissolved chemical may be contained (or diverted to impoundment area) by
         diking upper and/or lower bounds to limit volume of water affected and spread of contamination. (Note: The water
         is likely to contain hydrochloric acid and slowly disappearing traces of phosgene.)
            CONSEQ UENCE
               Earthen dikes may become saturated with water and seep through or collapse. Additional water may cause
               overflow of diked area or water body boundaries.
            MITIGA TION
               Reinforce or modify dikes as necessary. Be alert to conditions that may lead to overflow or dike collapse.
               Remove contaminated water to impoundment or storage area for later treatment or disposal. Consult qualified
               experts for safe treatment or neutralizing techniques.
       TECHNIQUE
     ) NEUTRALIZATION... Application of a suitable neutralization agent to the contaminated water may reduce
         environmental hazards.
            CONSEQUENCE
               Some neutralizing agents are themselves hazardous and must be handled with care. Improper application may
               lead to increased damage or harm.
            MITIGA TION
               Consult qualified experts for safe neutralizing techniques. Consider treating water via a processing system
               constructed on land.


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