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Title: Preliminary assessment of radon potential of the Pacific coast states

The US Geological Survey has recently released preliminary assessments of the radon potential in Washington, Oregon, and California. These assessments, funded by the Environmental Protection Agency, are based on geology, soils, aeroradiometric data, indoor radon data, and housing characteristics. Coastal mountain areas with low-uranium basaltic rocks and high soil moisture, and drier inland areas of low-uranium basaltic rocks in the northern part of the three-stage area have low round potential (<10 percent of homes with >4 pCi/L). Areas with highly permeable, uraniferous glacial outwash deposits in central and northeastern Washington; local areas with uraniferous marine shales in southern and south-central California; areas of granites, acidic volcanic rocks and alluvium derived from then in southeastern Oregon and central California; and steep soils developed on volcanic rocks in the Columbia River Gorge all have moderate (10-25 percent of homes with >4 pCi/L) radon potential. Extreme levels of indoor radon are possible in the northern Spokane, Wash. suburbs where homes may be sited on uranium occurrences. the radon potential of Mojave-Desert areas with high-uranium soils and rocks seems to be lowered by low radon entry rates, probably caused by slab-on-grade construction, use of evaporative coolers, and lifestyle factors. With the uranium-rich soils andmore » rocks present, however, high indoor radon levels are possible where unusual housing conditions are present.« less
Authors:
 [1]
  1. (Geological Survey, Denver, CO (United States))
Publication Date:
OSTI Identifier:
5056843
Report Number(s):
CONF-9305259--
Journal ID: ISSN 0016-7592; CODEN: GAAPBC
Resource Type:
Conference
Resource Relation:
Journal Name: Geological Society of America, Abstracts with Programs; (United States); Journal Volume: 25:5; Conference: 89. annual meeting of the Cordilleran Section and the 46th annual meeting of the Rocky Mountain Section of the Geological Society of America (GSA), Reno, NV (United States), 19-21 May 1993
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 58 GEOSCIENCES; AIR; RADIONUCLIDE MIGRATION; RADON; RADIATION MONITORING; RADIOECOLOGICAL CONCENTRATION; AIR QUALITY; CALIFORNIA; NATURAL RADIOACTIVITY; OREGON; RISK ASSESSMENT; SOIL CHEMISTRY; SOILS; WASHINGTON; CHEMISTRY; DEVELOPED COUNTRIES; ECOLOGICAL CONCENTRATION; ELEMENTS; ENVIRONMENTAL QUALITY; ENVIRONMENTAL TRANSPORT; FLUIDS; GASES; MASS TRANSFER; MONITORING; NONMETALS; NORTH AMERICA; RADIOACTIVITY; RARE GASES; USA 540130* -- Environment, Atmospheric-- Radioactive Materials Monitoring & Transport-- (1990-); 540250 -- Environment, Terrestrial-- Site Resource & Use Studies-- (1990-); 580000 -- Geosciences