By Walter F. Roche Jr.
US Nitrogen LLC has informed Tennessee environmental officials that it is planning to use an existing 52,250 gallon tank at its Greene County facility to produce a mixture of ammonium nitrate and water.
In a letter sent yesterday to Michelle Owenby of the Tennessee Department of Environment and Conservation, US Nitrogen plant manager Dylan Charles said the tank is currently being used to store storm water.
In the letter Charles said he was seeking Owenby's concurrence "that the tank constitutes an insignificant activity" with insignificant emissions, thus not requiring a permit.
The tank is located on the company's ammonium nitrate manufacturing plant in Midway.
Charles said in his letter that use of the tank would produce less than 1,000 pounds of hazardous air pollutants per year.
He wrote that the company would be blending a 57 percent ammonium nitrate solution.
The tank, Charles continued, "will not emit either nitrous oxide or carbon monoxide emissions. It will, however emit a small quantity of ammonium nitrate."
US Nitrogen informed TDEC in 2019 that it would be installing three storage tanks with a combined capacity of 128,400 gallons on the site, but those tanks were to be used in the production of a new product called RDT-8.
At that time the company said all three tanks should be considered an insignificant activity.
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