By Walter F. Roche Jr.
Tennessee environmental officials have acknowledged the receipt of recent test results from US Nitrogen, which were required under the company's permit.
In a three-page letter to Dylan Charles, US Nitrogen's plant manager, Bryan Parker of the Tennessee Department of Environment and Conservation said the results from the tests conducted on July 30-31, fulfill the permit requirements.
The tests were conducted on the emissions from two ammonia production lines at US Nitrogen's Midway manufacturing facility. Each train was tested at three different production rates to determine what levels would ensure compliance with emission limits.
The test results recounted in Parker's letter indicate nitrous oxide limits were exceeded on one of the ammonia trains when it was set to produce 35 tons of ammonia per day.
The other tests were at 65 tons per day and 100 tons per day. The tests were conducted by AMP-Cherokee Environmental Solutions.
The July tests were ordered when the results from April tests were found to be inconclusive.
"The division accepts this testing for the establishment of emission factors for both production trains," Parker wrote.
"The division agrees US Nitrogen has fulfilled the testing requirement," he concluded.
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