Development of site-specific soil cleanup criteria: New Brunswick Laboratory, New Jersey site
The potential human exposure which results from the residual soil radioactivity at a decommissioned site is a prime concern during D and D projects. To estimate this exposure, a pathway analysis approach is often used to arrive at the residual soil radioactivity criteria. The development of such a criteria for the decommissioning of the New Brunswick Laboratory, New Jersey site is discussed. Contamination on this site was spotty and located in small soil pockets spread throughout the site area. Less than 1% of the relevant site area was contaminated. The major contaminants encountered at the site were /sup 239/Pu, /sup 241/Am, normal and natural uranium, and natural thorium. During the development of the pathway analysis to determine the site cleanup criteria, corrections for the inhomogeneity of the contamination were made. These correction factors and their effect upon the relevant pathway parameters are presented. Major pathways by which radioactive material may reach an individual are identified and patterns of use are specified (scenario). Each pathway is modeled to estimate the transfer parameters along the given pathway, such as soil to air to man, etc. The transfer parameters are then combined with dose rate conversion factors (ICRP 30 methodology) to obtain soil concentration to dose rate conversion factors (pCi/g/mrem/yr). For an appropriate choice of annual dose equivalent rate, one can then arrive at a value for the residual soil concentration. Pathway modeling, transfer parameters, and dose rate factors for the three major pathways; inhalation, ingestion and external exposure, which are important for the NBL site, are discussed.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 5890390
- Report Number(s):
- ANL-OHS/HP-83-200; ON: DE85007589
- Country of Publication:
- United States
- Language:
- English
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12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
54 ENVIRONMENTAL SCIENCES
HUMAN POPULATIONS
RADIATION DOSES
SOILS
RADIOACTIVITY
AMERICIUM 241
DECOMMISSIONING
DECONTAMINATION
ENVIRONMENTAL EXPOSURE PATHWAY
LABORATORIES
NEW JERSEY
PLUTONIUM 239
THORIUM
URANIUM
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTINIDES
ALPHA DECAY RADIOISOTOPES
AMERICIUM ISOTOPES
CLEANING
DOSES
ELEMENTS
EVEN-ODD NUCLEI
FEDERAL REGION II
HEAVY NUCLEI
ISOTOPES
METALS
NORTH AMERICA
NUCLEI
ODD-EVEN NUCLEI
PLUTONIUM ISOTOPES
POPULATIONS
RADIOISOTOPES
USA
YEARS LIVING RADIOISOTOPES
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