Characterization of uranium contaminated soils from DOE Fernald Environmental Management Project Site: Results of Phase 1 characterization

Abstract

This repot,' was prepared as an account of work sponsored by an agency of the United _tates Government.

Analytical electron microscopy characterization of uranium-contaminated soils from the Fernald Site, FY1993 report

“…Uranium was also found to be adsorbed onto the surface of iron oxide/hydroxide, and some was contained within a calcium fluoride phase (fluorite). Although it was determined that most uranium was located in the clay fraction of the site soils (LEE, 1992), AEM studies did not show uranium to be associated with specific clay minerals. Uranium was in particulate form as discrete phases.…”

“…Uranium phases in Fernald site soils have been characterized by XRD and SEM analysis by Lee and Marsh (LEE, 1992). These techniques tend to concentrate on micrometer-sized particles.…”

“…Soil Description A complete description of soils at Fernald has been given by Lee (LEE, 1992). The storage pad soil contains 46% quartz, 15% calcite, 19% dolomite, and 20% clay, and the incinerator soil is 65% quartz, 20% calcite, 2% dolomite, and 13% clay.…”

“…At FEMP, the soil generally was contaminated by three sources: airborne uranium dust particles, aqueous uranium wastes, and solid uranium product spills (LEE, 1992). In this investigation, the soils studied were taken from the following sampling areas: (1) SP4 (Plant 1/Storage Pad Area), where the contamination resulted mainly from uranium product spills; (2) A14 (vicinity of the incinerator plant); (3) SP5 (decontamination area pad); and (4) SP2-3 (Plant 2/3 area).…”

Technical Evaluation of Soil Remediation Alternatives at the Building 812 Operable Unit, Lawrence Livermore National Laboratory Site 300

“…Extensive characterization and leaching studies were carried out from 1992 through 1994 to evaluate soil washing at the Fernald site (Kneff et al, 1992;Lee and Marsh, 1992;Kneff et al, 1993;Schilk et al, 1993;Cunnane et al, 1993;Francis et al, 1993;Lee et al, 1993;DOE, 1993;Bertsch and Hunter, 1994;Buck et al, 1994;Mason et al, 1994;Turney et al, 1994). Results from these investigations identified four potential protocols for washing Fernald soil, and the costs associated with the protocols (Douthat et al, 1995a;1995b) exceed the soil washing costs in Table F In Table 1, the fixed capital investment (FCI) for the Fernald protocols is about 3 to 5 times greater than the estimate for Building 812; there is no start-up cost estimated for Building 812; and operational costs for Building 812 are at the lower end of the costs associated with the Fernald protocols.…”