Interim Staff Guidance: Radiological Survey and Dose Modeling of the Subsurface To Support License Termination

Issuing agencies

Abstract

The U.S. Nuclear Regulatory Commission (NRC) is issuing the Division of Decommissioning, Uranium Recovery, and Waste Programs (DUWP), Interim Staff Guidance (ISG), DUWP-ISG-02, "Radiological Survey and Dose Modeling of the Subsurface to Support License Termination." The purpose of this ISG is to provide guidance on surveys of open surfaces in the subsurface, including open excavations, materials planned for reuse, and substructures. This ISG also provides guidance on the use of commonly used decommissioning dose modeling codes for submerged and partially submerged substructures to develop clean-up levels, and on methods to evaluate risk from existing groundwater contamination. This ISG supplements guidance found in NUREG-1757, Volume 2, Revision 2, which pertains to licensees subject to the license termination rule found in NRC regulations. This ISG is intended for use by applicants, licensees, and NRC staff. The guidance is also available to Agreement States and the public.