Chokio Equity Exchange, Graceville NH3 Plant - Executive Summary

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Chokio Equity Exchange, Graceville Site 
PO Box 126 
Chokio, MN 56221 
 
The board of directors, management, and employees of the Chokio Equity Exchange are committed to the prevention of any accidential releases of anhydrous ammonia.  If an accidential release should occur, the facility is prepared to work with the Graceville Fire Department, or other authorities, to minimize the impact of the release to people and the environment. 
 
The primary activity at the facility is the storage of anhydrous ammonia and loading nurse tanks for delivery  
to the farm for application.  
 
Anhydrous ammonia is received, stored, and distributed for direct application for crop nutrients. 
 
The maximum quantity stored would be 131,325 pounds in one 30,000 gallon tank.  The maximun quantity handled would be the unloading of a transport truck vessel containing 53,000 pounds. 
 
The worst case scenario would be the release of the total contents of a storage tank release over ten minutes.  The maximum quantity would 
be 131,325 pounds representing 85 percent of the capacity as limited by design standards.  The distance to the endpoint (point of dispersion to 200 PPM) is 3.1 miles. 
 
The alternate release scenario based on the two minute release is a release from a break in a 3 inch transfer hose.  The distance to the endpoint is .81 miles. 
 
The facility has implemented the provisions of "Safety Requirements for the storage and handling of Anhydrous Ammonia, K-61.1", published by The American National Standards Institute, Inc. and the standards of the U.S. Occupational Safety and Health Administration (OSHA), 29 CFR 1910.111, Storage and handling of anhydrous ammonia". 
 
The have been no accidental releases of Anhydrous Ammonia in the past five years at this site. 
 
The Chokio Equity Exchange has a written action plan, in accordance with OSHA Standard 29 CFR 1910.38; provided state and local authorities with emergency planning and community right-to-know information as required under SARA III (EPRCA). 
 
 
Chokio Equity Exchange will coordinate this plan with the local emergency responders. 
 
Safety improvements is an on-going process at the facility.  Periodic evaluations are performed to access the maintenance of safety conditions.  There are no additional specific anhydrous ammonia safety recommendations for implementations at this time.
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