What are the findings of the NFSS remedial investigation?
The NFSS Remedial Investigation Report documents the Corps’ conclusions on the nature and extent of contaminants, and risks from environmental contamination resulting from MED and AEC activities. On site these include: • Soils (Radiological Contamination): Radionuclides significantly exceeded background for both surface and subsurface site soils in both the surface and the subsurface. For surface soils, radium-226, thorium 230, uranium-238 and cesium-137 were radionuclides with the greatest frequency of exceeding background concentrations in both surface and subsurface soils. The most widespread contaminant is radium-226. (Click here for soil sampling map) • Soils (Chemical Contamination): Chemical contamination was also found in both surface and subsurface soils, although at exceedances with smaller orders of magnitude than those found for the radionuclides. Volatile organic compounds (VOCs) in soil included chlorinated solvents, benzene, toluene, methylene chloride, carbon disulfide
