Contaminated Soil Cleanup Objectives for Cornhusker Army Ammunition Plant.

Abstract : A method has been developed to determine soil cleanup objectives for small chemically contaminated source areas located within a large installation. The purpose of such cleanup is to reduce the sources of groundwater pollution, so that levels of the contaminants in the aquifer would eventually not exceed applicable drinking water criteria. The method has been applied to derive site-specific soil concentration limits for Cornhusker Army Ammunition Plant. The numbers so derived, not to be used elsewhere, are as follows: TNT, 5 ppm; RDX, 10 ppm; 1,3,5-trinitrobenzene (TNB), 15 ppm. Numbers were also derived for 2,4-DNT and 2,6-DNT; but removal of soil excessively contaminated with TNT should be sufficient to assure adequate removal of the two DNTs at this site. Thus, analysis for the latter compounds on a regular basis need not be required. Keywords: Nitrobenzenes; Army facilities; Nebraska; Nitramine, Methylenes; Cyclotrimethylenetrinitramine; DNT; Explosives; Groundwater; Pollutant limit values; and Soil contaminants.