By Walter F. Roche Jr.
A chemical company that just won renewal of a critical permit is now seeking a series of amendments to its operating permit from the Tennessee Department of Environment and Conservation.
In a submission to TDEC this week US Nitrogen LLC, located in Greene County, asked to have a current limit on the number of burners used in it two ammonia trains eliminated.
In a letter to Michelle Owenby, US Nitrogen's Dylan Charles said the changes were being requested due to the results of two days of tests conducted in late July.
In addition US Nitrogen is asking TDEC to change the emission factors used to determine the company's compliance with nitrous oxide emission limits. The company wants TDEC to replace the existing standard, which was set in 2016, to a new standard set as a result of the July tests.
The third requested change in its major conditional operating permit asks that it include a range of ammonia injection rates for each Selective Catalytic Reduction unit that can be used to assure compliance with nitrous oxide limits, so that there would be "no ammonia slip."
Charles, in a cover letter, indicates that the proposed changes have been the subject of ongoing discussions between the company and TDEC officials.
The requested changes come in the same week TDEC gave its official approval to another key US Nitrogen permit. Renewed was the permit that allows US Nitrogen to pump effluent from its plant in Midway to mile marker 20.8 in the Nolichucky River.
Contact: wfrochejr999@gmail.com
No comments:
Post a Comment