Resuspension and Redistribution of Plutonium in Soils

Addendum 1 Composite Analysis for the Area 5 Radioactive Waste Management Site at the Nevada Test Site, Nye County, Nevada

“…Site-specific data were observed to range from 8E-5 to 1E-2 yr (Anspaugh et al, 1975;Shinn et al, -1 1986). Therefore, the CA assumes that the resuspension rate is uniformly distributed from 8E-5 to 1E-2 yr .…”

Cassini Spacecraft Uncertainty Analysis Data and Methodology Review and Update/Volume 1: Updated Parameter Uncertainty Models for the Consequence Analysis

“…An uncertainty of two or more orders of magnitude is implied when the models for rural resuspension values are evaluated (see Appendix I, Figure 1.4-1, Lockheed Martin, 1997). The average resuspension factor (m-') for 1 80 days ranges from a high of about 4x 1 0-' in Anspaugh's model (Anspaugh, 1975) Two questions requesting integrated resuspension factors were as follows:…”

Environmental consequences of postulated plutonium releases from Exxon Nuclear MOFP, Richland, Washington, as a result of severe natural phenomena

“…However, the airborne concentration from resuspended material can be estimated using a resuspension factor, K. The resuspension factor is defined as the resuspended air concentration divided by the surface deposition. Values for K in the environment between 10-4 and 10-13 m-1 have been measured and reported (Selby et al 1975, Friedman 1976, Anspaugh et al 1975, EPA 1977, Cohen 1977, FES 1974, Bennett 1975, Hanson 1975, Martin and Bloom 1975, Sehmel 1977, Healy 1977, Anspaugh 1976. Until a more general model is available, which considers all the important variables affecting the resuspension process, Anspaugh (1975) The second term in Equation 3, 10-9 m-1 , was added based on the assumption that there may be no further measurable decrease in the resuspension factor after 20 years.…”

“…Values for K in the environment between 10-4 and 10-13 m-1 have been measured and reported (Selby et al 1975, Friedman 1976, Anspaugh et al 1975, EPA 1977, Cohen 1977, FES 1974, Bennett 1975, Hanson 1975, Martin and Bloom 1975, Sehmel 1977, Healy 1977, Anspaugh 1976. Until a more general model is available, which considers all the important variables affecting the resuspension process, Anspaugh (1975) The second term in Equation 3, 10-9 m-1 , was added based on the assumption that there may be no further measurable decrease in the resuspension factor after 20 years. This assumption was deemed appropriate since the model was empirically derived to simulate experimental measurements out to 17 years, and contains no fundamental understanding of the resuspension process (Anspaugh et al 1975).…”

“…Until a more general model is available, which considers all the important variables affecting the resuspension process, Anspaugh (1975) The second term in Equation 3, 10-9 m-1 , was added based on the assumption that there may be no further measurable decrease in the resuspension factor after 20 years. This assumption was deemed appropriate since the model was empirically derived to simulate experimental measurements out to 17 years, and contains no fundamental understanding of the resuspension process (Anspaugh et al 1975). Figure 4 illustrates the time dependence of the resuspension factor.…”