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Title: Radionuclide distributions and migration mechanisms at shallow land burial sites. 1982 annual report of research investigations on the distribution, migration and containment of radionuclides at Maxey Flats, Kentucky

Abstract

Subsurface waters at Maxey Flats are anoxic, have a high alkalinity and contain high concentrations of ferrous, sulfide and ammonium ions and organic carbon. The trench leachates are extremely variable in composition. Prominent radionuclides include /sup 3/H, /sup 60/Co, /sup 90/Sr, /sup 137/Cs, /sup 238/ /sup 239/ /sup 240/Pu and /sup 241/Am. A wide spectrum of dissolved organic compounds is present in the leachates, including EDTA, polar organics and decomposition products from the waste forms. Cobalt-60 and plutonium are present as EDTA complexes and /sup 90/Sr and /sup 137/Cs are associated with carboxylic acid type compounds. The chemistry of these waters changes drastically as they become oxic and plutonium becomes less mobile under these new conditions. Water enters the trenches by infiltration through the trench caps, through subsidence areas, and through interfaces between new landfill and the original soil. Lateral flow is very complex and slow, and apparently occurs mainly by fracture flow. The plastic infiltration barrier installed in 1981 to 1982 has been effective in reducing soil moisture if cracks and leaks are eliminated. To date, no direct evidence of radionuclide transport to offsite locations by subsurface flow has been confirmed. The offsite distribution of radionuclides, except for tritium,more » is comparable to the ambient fallout from nuclear weapons testing. Tritium concentrations in water offsite are orders of magnitude below MPC levels. 24 figures, 31 tables.« less

Authors:
 [1]
  1. (ed.)
Publication Date:
Research Org.:
Pacific Northwest Lab., Richland, WA (USA)
OSTI Identifier:
5318390
Report Number(s):
NUREG/CR-3607; PNL-4823
ON: DE84007397
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 54 ENVIRONMENTAL SCIENCES; 58 GEOSCIENCES; AMERICIUM 241; ECOLOGICAL CONCENTRATION; CESIUM 137; COBALT 60; EDTA; DIFFUSION; GROUND WATER; RADIONUCLIDE MIGRATION; KENTUCKY; RADIOACTIVE WASTE DISPOSAL; PLUTONIUM 238; PLUTONIUM 239; PLUTONIUM 240; LOW-LEVEL RADIOACTIVE WASTES; RESEARCH PROGRAMS; STRONTIUM 90; TRITIUM; CHEMICAL STATE; EXPERIMENTAL DATA; GEOCHEMISTRY; HYDROLOGY; LEACHATES; PLUTONIUM; SOIL CHEMISTRY; UNDERGROUND DISPOSAL; WATER CHEMISTRY; ACTINIDE ISOTOPES; ACTINIDE NUCLEI; ACTINIDES; ALKALI METAL ISOTOPES; ALKALINE EARTH ISOTOPES; ALPHA DECAY RADIOISOTOPES; AMERICIUM ISOTOPES; AMINO ACIDS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBOXYLIC ACIDS; CESIUM ISOTOPES; CHELATING AGENTS; CHEMISTRY; COBALT ISOTOPES; DATA; DISPERSIONS; ELEMENTS; ENVIRONMENTAL TRANSPORT; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; FEDERAL REGION IV; HEAVY NUCLEI; HYDROGEN COMPOUNDS; HYDROGEN ISOTOPES; INFORMATION; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LIGHT NUCLEI; MANAGEMENT; MASS TRANSFER; MATERIALS; METALS; MINUTES LIVING RADIOISOTOPES; MIXTURES; NORTH AMERICA; NUCLEI; NUMERICAL DATA; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; ORGANIC ACIDS; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; PLUTONIUM ISOTOPES; RADIOACTIVE MATERIALS; RADIOACTIVE WASTES; RADIOISOTOPES; SOLUTIONS; STRONTIUM ISOTOPES; TRANSURANIUM ELEMENTS; USA; WASTE DISPOSAL; WASTE MANAGEMENT; WASTES; WATER; YEARS LIVING RADIOISOTOPES; 053000* - Nuclear Fuels- Environmental Aspects; 052002 - Nuclear Fuels- Waste Disposal & Storage; 520301 - Environment, Aquatic- Radioactive Materials Monitoring & Transport- Water- (1987); 580100 - Geology & Hydrology- (-1989)

Citation Formats

Kirby, L.J. Radionuclide distributions and migration mechanisms at shallow land burial sites. 1982 annual report of research investigations on the distribution, migration and containment of radionuclides at Maxey Flats, Kentucky. United States: N. p., 1984. Web. doi:10.2172/5318390.
Kirby, L.J. Radionuclide distributions and migration mechanisms at shallow land burial sites. 1982 annual report of research investigations on the distribution, migration and containment of radionuclides at Maxey Flats, Kentucky. United States. doi:10.2172/5318390.
Kirby, L.J. Wed . "Radionuclide distributions and migration mechanisms at shallow land burial sites. 1982 annual report of research investigations on the distribution, migration and containment of radionuclides at Maxey Flats, Kentucky". United States. doi:10.2172/5318390. https://www.osti.gov/servlets/purl/5318390.
@article{osti_5318390,
title = {Radionuclide distributions and migration mechanisms at shallow land burial sites. 1982 annual report of research investigations on the distribution, migration and containment of radionuclides at Maxey Flats, Kentucky},
author = {Kirby, L.J.},
abstractNote = {Subsurface waters at Maxey Flats are anoxic, have a high alkalinity and contain high concentrations of ferrous, sulfide and ammonium ions and organic carbon. The trench leachates are extremely variable in composition. Prominent radionuclides include /sup 3/H, /sup 60/Co, /sup 90/Sr, /sup 137/Cs, /sup 238/ /sup 239/ /sup 240/Pu and /sup 241/Am. A wide spectrum of dissolved organic compounds is present in the leachates, including EDTA, polar organics and decomposition products from the waste forms. Cobalt-60 and plutonium are present as EDTA complexes and /sup 90/Sr and /sup 137/Cs are associated with carboxylic acid type compounds. The chemistry of these waters changes drastically as they become oxic and plutonium becomes less mobile under these new conditions. Water enters the trenches by infiltration through the trench caps, through subsidence areas, and through interfaces between new landfill and the original soil. Lateral flow is very complex and slow, and apparently occurs mainly by fracture flow. The plastic infiltration barrier installed in 1981 to 1982 has been effective in reducing soil moisture if cracks and leaks are eliminated. To date, no direct evidence of radionuclide transport to offsite locations by subsurface flow has been confirmed. The offsite distribution of radionuclides, except for tritium, is comparable to the ambient fallout from nuclear weapons testing. Tritium concentrations in water offsite are orders of magnitude below MPC levels. 24 figures, 31 tables.},
doi = {10.2172/5318390},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {2}
}