ABSTRACT
Important objectives of the scoping and characterization surveys, as discussed in chapter 4, include identifying site contaminants, determining relative ratios among the contaminants, and establishing DCGLs and conditions for the contaminants which satisfy the requirements of the responsible agency. Chapter 5 discussed how DCGLs for individual radionuclides can be determined using exposure pathway modeling. This can be a very detailed and complex process, often requiring a knowledge of various modeling codes and may even require a good deal of site-specific information to obtain ‘realistic’ DCGLs. This current chapter discusses how these individual DCGLs can be combined and applied when more than one radionuclide is present at a site. Of course, as many can attest, the typical D&D site indeed has more than one radionuclide contaminant present.
