Abstract
ABSTRACT: Concentrations of ammonium‐ and nitrate‐nitrogen of about 10,000 ppm moved from an untreated surface storage pond into the ground water in the sandy beds of the surficial sediments in northeastern North Carolina. This high concentration of nitrogen moved through the permeable sandy beds with the ground water above the Yorktown Formation aquiclude to the Chowan River with only minor dispersion normal to the hydraulic gradient. There was essentially no nitrogen movement into the Yorktown aquiclude even though solutions of 2,000 ppm (sol basis) had been in the overlying sediments for 2 to 3 years The possibility of the nitrogen moving into the deeper quifers used for community water supplies is very small. Only the shallow ground water above the Yorktown Formation in the immediate area will be contaminated with nitrogen because there is little lateral dispersion away from the flow of ground water toward the Chowan River.
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