GIS CORRELATIONS BETWEEN INDOOR RADON AND GEOTECHNICAL PARAMETERS

Using an indoor radon database comprised of more than 6000 3-month seasonal indoor radon measurements from exactly located homes, comparisons were analyzed between the indoor radon and GIS determined tabulations of homesite geological unit, elevation, slope and aeroradioactivity. All these parameters in previous studies were found to be, or predicted to be, strongly correlated with indoor radon (more radon correlated with some geological units, with higher elevation, with greater slope, and with greater aeroradioactivity). Attempts to determine the validity and strength of these correlations did not support the anticipated results. Positive though not strong correlations were found bebetween radon and geological unit, lower elevation, lower slope, and higher aeroradioactivity.