US Nitrogen Files Compliance Report

By Walter F. Roche Jr.

US Nitrogen LLC has told Tennessee officials it fully complied with the provisions of its permit in the production of tons of nitric acid at its Greene County manufacturing facility.
The massive Annual Permit Compliance Report, complete with hourly reports on emission levels, shows that on nearly 100 days between January and August in 2019, no nitric acid was produced.
In fact, the daily production report shows that in many months, there was no nitric acid production on 20 or more days.
In March of 2019, for instance, there was no nitric acid production from March 7 to March 29. In June there was no nitric acid production from June 4 to June 24.
The data was sent as an attachment to a letter from US Nitrogen Plant Manager Dylan Charles to Michelle Owenby, head of the air pollution control division of the Tennessee Department of Environment and Conservation.
In the letter Charles disclosed that there was only a four period in February where emissions monitoring equipment was not in operation. The Feb. 25 gap, according to the letter, was due to routine maintenance.
According to Charles, the company complied with various limits set out in the permit, including limiting nitric acid production to 600 tons per day. Other limits include the emission of no more than 54.8 tons of nitrous oxides per year.
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