By Walter F. Roche Jr.
Tennessee environmental officials have concluded that US Nitrogen LLC does not need a permit to utilize three 20,000 gallon sump pump water tanks.
In a letter sent today Tennessee Department of Environment and Conservation manager James P. Johnston wrote that, based on data submitted by US Nitrogen, the use of the tanks will have an "insignificant" effect on the environment.
The approval marks the second time in recent weeks that TDEC has waived permit requirements for the Midway chemical company. The state gave its okay on April 30 to USN's use of a 52,250 tank to be utilized in producing an ammonium nitrate and water solution. The solution will be 57 percent ammonium nitrate and 43 percent water.
In the letter sent today to Dylan Charles, the USN plant manager, Johnston wrote said that based on USN's data, the tanks would emit less than five tons per year of air contaminants and less than 1,000 pounds of hazardous air contaminants annually.
In its application USN said that the water the tanks will hold will be no more than five per cent ammonium nitrate. They will each be 13.67 feet in diameter.
As he did in approving the other waiver, Johnston closed by stating that the company must comply with all applicable air pollution regulations.
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