f ASSESSING THE ACCURACY OF ANOMALY DENSITY ESTIMATES USING TRANSECT SAMPLING METHODS FOR UXO SITE CHARACTERIZATION

The Department of Defense is currently focusing its efforts to address formerly used defense site UXO contamination on the site characterization, or remedial investigation, phase of the CERCLA process. This effort includes acquiring data to estimate the cost of remedial alternatives. One of the important factors determining the cost of remedial actions is the anomaly density of the contaminated area. Geophysical transect sampling using electromagnetic or magnetic sensors is the most common method for mapping anomaly density at UXO contaminated sites, but the accuracy of those estimates is not well understood.