ON OR ABOUT 06/12/91, DURING THE PERIOD OF 11:40 PM AND 5:00 AM ON 06/13/91, APPROXIMATELY 10 TONS OF ANHYDROUS AMMONIA WAS RELEASED FROM THE LOCATION OF THE HOLYOKE COOP ASSOCIATION SOUTH AMMONIA PLANT LOCATED FOUR MILES SOUTH AND ONE AND ONE HALF MILES EAST OF HOLYOKE, COLORADO. THE INCIDENT OCCURRED WHILE OFF-LOADING THE PRODUCT. THE TRANSPORTER OF THE ANHYDROUS AMMONIA WS SCHOLL OIL AND TRANSPORT COMPANY. THERE IS ONE COUNT IN THIS COMPLAINT, FOR NOT NOTIFYING THE NRC OF THE SPILL. THE PROPOSED CIVIL PENALTY FOR THIS INCIDENT IS $22,500.