FACTORS ASSOCIATED WITH ELEVATED RN-222 LEVELS IN IOWA

The University of Iowa, in conjunction with the Environmental Protecti on Agency's State Radon Survey Assistance Program, performed a Rn-222 screening survey of 582 rural households in the winter of 1989. The di stribution of maximum indoor Rn-222 concentrations throughout Iowa as well as the relationship between Rn-222 screening measurements, detect or placement, and housing characteristics are summarized. This report is unique in that site-specific home construction characteristics were collected in the field from participant prior to Rn-222 monitoring. T he findings of the survey indicate that the significance of a particul ar housing characteristic on a Rn-222 screening measurement is depende nt on the placement of the radon detector.