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Title: Stontium-90 contamination in vegetation from radioactive waste seepage areas at ORNL, and theoretical calculations of /sup 90/Sr accumulation by deer

This report describes data obtained during a preliminary characterization of /sup 90/Sr levels in browse vegetation from the vicinity of seeps adjacent to ORNL solid waste storage areas (SWSA) where deer (Odocoileus virginianus) were suspected to accumulate /sup 90/Sr through the food chain. The highest strontium concentrations in plant samples were found at seeps associated with SWSA-5. Strontium-90 concentrations in honeysuckle and/or blackberry shoots from two seeps in SWSA-5 averaged 39 and 19 nCi/g dry weight (DW), respectively. The maximum concentration observed was 90 nCi/g DW. Strontium-90 concentrations in honeysuckle and blackberry shoots averaged 7.4 nCi/g DW in a study area south of SWSA-4, and averaged 1.0 nCi/g DW in fescue grass from a seepage area located on SWSA-4. A simple model (based on metabolic data for mule deer) has been used to describe the theoretical accumulation of /sup 90/Sr in bone of whitetail deer following ingestion of contaminated vegetation. These model calculations suggest that if 30 pCi /sup 90/Sr/g deer bone is to be the accepted screening level for retaining deer killed on the reservation, then 5-pCi /sup 90/Sr/g DW vegetation should be considered as a possible action level in making decisions about the need for remedial measures, becausemore » unrestricted access and full utilization of vegetation contaminated with <5 pCi/g DW results in calculated steady-state (maximum) /sup 90/Sr bone concentrations of <30 pCi/g in a 45-kg buck.« less
Authors:
;
Publication Date:
OSTI Identifier:
6205243
Report Number(s):
ORNL/TM-10453
ON: DE87013371; TRN: 87-029950
DOE Contract Number:
AC05-84OR21400
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted. Environmental Sciences Division Publication No. 2924
Research Org:
Oak Ridge National Lab., TN (USA)
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 54 ENVIRONMENTAL SCIENCES; DEER; CONTAMINATION; FOOD CHAINS; RADIONUCLIDE MIGRATION; STRONTIUM 90; BUILDUP; OAK RIDGE RESERVATION; PLANTS; QUANTITY RATIO; RADIOACTIVE WASTE DISPOSAL; RADIOECOLOGICAL CONCENTRATION; RECOMMENDATIONS; ALKALINE EARTH ISOTOPES; ANIMALS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; ECOLOGICAL CONCENTRATION; ENVIRONMENTAL TRANSPORT; EVEN-EVEN NUCLEI; INTERMEDIATE MASS NUCLEI; ISOTOPES; MAMMALS; MANAGEMENT; MASS TRANSFER; NATIONAL ORGANIZATIONS; NUCLEI; RADIOISOTOPES; RUMINANTS; STRONTIUM ISOTOPES; US DOE; US ERDA; US ORGANIZATIONS; VERTEBRATES; WASTE DISPOSAL; WASTE MANAGEMENT; YEARS LIVING RADIOISOTOPES 054000* -- Nuclear Fuels-- Health & Safety; 510300 -- Environment, Terrestrial-- Radioactive Materials Monitoring & Transport-- (-1989)