Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

The indoor radon problem: Studies in the Albuquerque, New Mexico area

Journal Article · · Environmental Geology and Water Sciences; (United States)
DOI:https://doi.org/10.1007/BF02574731· OSTI ID:5968854
 [1]
  1. Univ. of New Mexico, Albuquerque (United States)
Radon buildup in homes is now recognized throughout the world as a potentially major health hazard. The U.S. Nuclear Regulatory Commission and the U.S. Environmental Protection Agency estimate 8,000-30,000 fatalities per year in the US due to indoor radon. The Albuquerque, New Mexico area was chosen for study because it is representative of metropolitan areas in the southwestern US where slightly uraniferous source rocks (Sandia granite) have provided the very immature soil for much of the area. The granite contains 4.7 ppm U, and limestone capping the granite 5.7 ppm U. Soils in the area average 4.24 ppm U, and Th/U ratios average 3.2. These data suggest some removal of U from the source rocks, but fixation of the U in the soils (that is, opposed to wide-spread removal of the U by solution), thus providing a ready source for soil radon. A pilot study of soil radon in the area in winter of 1983-1984 shows high values, 180 pCi/l, relative to the US average (about 100 pCi/l). In the winter of 1986-1987, 180 dwellings were surveyed for their indoor radon levels, including 20 that had been surveyed in summer of 1986. Twenty-eight percent of those in the winter study yielded indoor radon above the EPA suggested maximum permissible level of 4 pCi/l air, well above the EPA estimate of 10-15 dwellings for the US. The indoor radon levels show positive correlation with closeness to the Sandia Mountains, to soil radon, to excess insulation, to homes with solar capacities, and other factors. Building materials may provide a very minor source of some indoor radon. Summer readings are lower than winter readings except when the houses possess refrigerated air conditioning.
OSTI ID:
5968854
Journal Information:
Environmental Geology and Water Sciences; (United States), Journal Name: Environmental Geology and Water Sciences; (United States) Vol. 12:3; ISSN 0177-5146; ISSN EGWSE
Country of Publication:
United States
Language:
English