Geren Island Treatment Facility - Executive Summary

| Accident History | Chemicals | Emergency Response | Registration | Source | Executive Summary |

The Geren Island Treatment Facility is the primary water treatment facility for the City 
of Salem, Oregon.  Chlorine gas is used at the facility to disinfect treated water before it 
enters the distribution system.  The purpose of disinfection is to destroy or remove 
harmful or objectionable organisms from the water.  Disinfection destroys disease 
producing organisms.  Chlorine gas is used at the treatment facility because of its low 
cost, good disinfecting power, ease of handling, and excellent safety record. 
There has never been an accidental release of chlorine of any amount at the Geren Island 
Treatment Facility.  The City has accidental release prevention and emergency response 
policies in place to minimize the probability of an accidental release and to protect the 
public if an accidental release occurs.  As part of the City's Emergency Response Plan, 
the City has coordinated these policies and procedures with local emergency responders.  
The City has instituted safet 
y procedures and training policies to protect both City 
employees and the public from an accidental release of chlorine. 
An off-site consequence analysis has been performed to assist emergency responders.  
Two release scenarios have been performed as part of the analysis, a catastrophic release 
scenario and an minor release scenario.  The catastrophic release scenario represents the 
complete release of a container of chlorine gas due to a catastrophic event at the facility.  
The minor release scenario represents the release of a part of the container's contents due 
to a leak in the container.
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