By Walter F. Roche Jr.
Tennessee environmental officials have accepted nitrogen emission monitoring test results for US Nitrogen LLC, the Greene County chemical manufacturing company.
In a letter sent Friday to US Nitrogen's Plant Manager Dylan Charles, an official of the Tennessee Department of Environment and Conservation acknowledged the receipt of the test results and indicated they meet the requirements of the company's permits.
The so-called "Relative Accuracy Test Audits" were performed by Southern Air Solutions and designed to assess whether environmental monitoring systems in use by US Nitrogen were performing accurately.
The tests were performed on June 8 and 9 on the company's nitric acid plant and its two steam generating boilers.
The relative accuracy for one boiler was 7.12 per cent. The relative accuracy for the second boiler was 16.99 percent.
"Therefore the division accepts the report as certifying the continued operation" of the boilers and nitric acid plant, the letter from TDEC manager Bryan Parker states.
US Nitrogen submitted over 100 pages of data on the tests on July 8.
In submitting the information, US Nitrogen disclosed that the original test data had been "modified" by the company and an outside firm, Ensafe, a longtime environmental consultant.
In the same report US Nitrogen was identified as a "nitrogenous fertilizer manufacturer."
Previously the company had stated that it manufactured ammonium nitrate for use in the production of exlosives by its parent company, Austin Powder.
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