To support remediation and the site cleanup design, DOE assessed all site soils for radiological contamination. Boreholes for logging gamma radiation measurements as an indicator of contamination were drilled at 90-foot intervals. This assessment provides a general sense of where the highest concentrations of radiological contaminants in soil exist. All site soils will be cleaned up to applicable U.S. Environmental Protection Agency standards.

DOE has prepared the Radiological Assessment for Non-Pile Areas of the Moab Project Site that details the measurement techniques, instruments, and procedures used to conduct this radiological assessment and discusses the results of the assessment.

In 2003, DOE began cleaning up radiologically contaminated soil in non-pile areas of the project site and hauling it to the top of the tailings pile. This interim soils remediation has resulted in a reduction of the contaminated footprint by 102 acres. The linked figure shows the areas that have been remediated and the date range of when each remediation took place. The figure also shows the extent and estimated depth of contamination in the remaining areas that were assessed.

To support these additional interim actions, and in compliance with federal floodplain and wetlands regulations, DOE prepared a Floodplain and Wetlands Assessment of the potential effects planned interim cleanup actions might have on the floodplain or wetlands at the site. In addition, DOE issued a Floodplain Statement of Findings in accordance with 10 Code of Federal Regulations 1022.