Welcome to the EPA's "Preliminary Remediation Goals for Radionuclide Contaminants at Superfund Sites" (PRG) Download and Calculator website. The recommended PRGs on this website are preliminary remediation goals (PRGs) for contaminated soil, water, and air. PRGs are addressed in the NCP and EPA CERCLA guidance. Typically PRGs are risk-based, conservative screening values to identify areas and contaminants of potential concern (COPCs) that may warrant further investigation.
This tool presents risk-based preliminary remediation goals (PRGs) calculated using default input parameters and the latest toxicity values. In addition, you are able to modify the input parameters to create site-specific PRGs to meet the needs of your site. To ensure proper application of the PRGs, please see further guidance on how to use the PRGs presented on this site located in the "PRG User's Guide", "PRG What's New", "PRG FAQ", and "PRG Download Area" links. The EPA has prepared a fact sheet for the general public that describes PRG uses, PRG calculator operation and land uses available for assessment. Additionally, this fact sheet describes the PRG and Dose Compliance Concentrations (DCC) calculators in greater detail for EPA staff. The Office of Solid Waste and Emergency Response (OSWER) Directive, Superfund Radiation Risk Assessment: A Community Toolkit was also developed by the EPA to help the public understand more about the risk assessment process used at Superfund sites with radioactive contamination.
The PRG calculator results were previously internally verified and externally verified, and the documentation of these reviews may be seen here. The PRG calculator was previously peer reviewed, and the documentation of those peer reviews may be seen here. The PRG calculator was previously part of several model comparison, and the documentation of one of those reviews may be seen in NCRP Report No. 146: Approaches to Risk Management in Remediation of Radioactively Contaminated Sites. This report examines EPA Superfund and NRC Decommissioning programs approach to radiation site cleanup. Section 3.3.3 is a "Comparison of EPA Preliminary Remediation Goals with NRC Screening Levels." It is part of a larger Section 3.3 "Methods of Site Characterization and Dose or Risk Assessment." Several other comparison reviews that focused on describing the default parameters in various models may be found here.
Original URL withdrawn: https://epa-prgs.ornl.gov/radionuclides/
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