By Walter F. Roche Jr.
US Nitrogen LLC has submitted an annual storm water monitoring report, which appears to show runoffs sampled were within required limits for dozens of pollutants.
The eight-page report including a two-page cover letter, submitted by Dylan Charles, the firm's plant manager, includes details on activities in eight drainage areas contained on the 30-acre site where the company treats water pumped from the Nolichucky River.
The report also includes a description of an 8.6 acre area where the company is applying sludge from its water treatment operations. The treated water is used by US Nitrogen in the manufacture of liquid ammonium nitrate.
Among the substances detected include ammonia, oil and grease and total suspended solids. The report also includes the acidity level in each of the areas tested. Details on some drainage areas were not included, the report states, because an an analysis showed the results were likely to be the same as those tested.
According to the report 11 of the 30 acres are in industrial use and that includes seven acres containing lined ponds. The runoff from that area flows into the Nolichucky River.
The activities taking place on the site include the storage of chemicals, loading liquids into containers and trucks traveling over internal roadways on the property.
The report states that storm water is diverted around the areas where sludge is being applied.
"Storm water on the upside slope of each land application area will be diverted around each application area such that each associated outfall receives storm water from the outlined application areas," the report states.
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