By Walter F. Roche Jr.
A consultant for a Greene County chemical firm has advised Tennessee environmental officials that data submitted with a recent exemption request was wrong by a factor of two.
John W. Shipp Jr. wrote in an email to the Tennessee Department of Environment and Conservation that he mistakenly entered the wrong data on vapor pressure. The data was included in a US Nitrogen request to TDEC for a new operation to produce a 57 percent ammonium nitrate and water solution.
"So the calculations I made were low by two orders of magnitude," Shipp wrote in an email to James Johnston of TDEC.
Shipp's email followed an email by Johnston to US Nitrogen raising questions about the data which he said appeared to be inconsistent.
"Can you please help me understand the differences between these data," Johnson wrote in his message to US Nitrogen.
Shipp said he mistakenly entered data showing vapor emissions two times higher than they should have been.
"All in all the vapor pressure of ammonium nitrate is very low," Shipp wrote in his email to TDEC.
US Nitrogen had submitted the data with a request that the state allow the company to use a 52,250 gallon holding tank to produce the new ammonium nitrate solution. The company contends that no new permit is needed because the new operation will have minimal environmental impact.
Contact: wfrochejr999@gmail.com
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