Solid-waste leach characteristics and contaminant-sediment interactions. Volume 1, Batch leach and adsorption tests and sediment characterization

Radionuclide Distribution Coefficients of Sediments Collected from Borehole 299-E17-21: Final Report for Subtask 1a

“…Generally, the pH of surface sediments and near-surface sediments has been reported to be -8.0 to 8.4 (Serne et al 1993;Kaplan et al 1995Kaplan et al , 1996 A matrix of simple linear correlation coefficients of the measured parameters is presented in Table 5. Statistically significant correlations are also identified in the table.…”

“…It was shown in Serne et al (1993) that Hanford Site vadose-zone sediment pore waters are quite similar to the underlying groundwater. It is much easier to collect groundwater than vadose-zone pore water.…”

Diffusion and Leaching of Selected Radionuclides (Iodine-129, Technetium-99, and Uranium) Through Category 3 Waste Encasement Concrete and Soil Fill Material

“…The Trench 8 soil is a medium coarse sand that was obtained from the sidewall of the W-5 burial ground located in the Hanford Site. The physical, chemical, and mineralogical properties of this soil has been previously characterized by Serne et al (1993). Quantities of soil with appropriate moisture contents (~4% and ~7% by weight) were packed into plastic cylinders (~4.13-cm diameter) to form these half cells (Figure 4.1).…”

Release Data Package for Hanford Site Assessments

“…The measured range of pH in leachates of natural (uncontaminated) Hanford sediments is 7.66 to 8.17. These sediments contain a significant buffering capacity that supports this assumption (Serne et al 1993). Sediment pore waters are assumed to be mildly oxidizing in an Eh range of +275 to +400 mV ( Figure C.1).…”