Direct measurements of transport properties are essential for site characterization
- Pacific Northwest Lab., Richland, WA (United States)
- Washington State Univ. Tri-Cities, Richland, WA (United States). Environmental Sciences
Direct measurements of transport parameters on subsurface sediments using, the UFA method provided detailed hydrostratigraphic mapping, and subsurface flux distributions at a mixed-waste disposal site at Hanford. Seven hundred unsaturated conductivity measurements on fifty samples were obtained in only six months total of UFA run time. These data are used to provide realistic information to conceptual models, predictive models and restoration strategies. The UFA instrument consists of an ultracentrifuge with a constant, ultralow flow pump that provides fluid to the sample surface through a rotating seal assembly and microdispersal system. Effluent from the sample is collected in a transparent, volumetrically-calibrated chamber at the bottom of the sample assembly. Using a strobe light, an observer can check the chamber while the sample is being centrifuged. Materials can be run in the UFA as recomposited samples or in situ samples can be subcored directly into the sample UFA chamber.
- Research Organization:
- Pacific Northwest Lab., Richland, WA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 10109142
- Report Number(s):
- PNL-SA-23775; CONF-940815-105; ON: DE95004940; TRN: AHC29507%%9
- Resource Relation:
- Conference: SPECTRUM `94: international nuclear and hazardous waste management conference,Atlanta, GA (United States),14-18 Aug 1994; Other Information: PBD: Aug 1994
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
HANFORD RESERVATION
RADIOACTIVE WASTE FACILITIES
HYDRAULIC CONDUCTIVITY
CARBON TETRACHLORIDE
ENVIRONMENTAL TRANSPORT
PLUTONIUM
AMERICIUM
SITE CHARACTERIZATION
MEASURING INSTRUMENTS
VOLATILE MATTER
SOIL CHEMISTRY
053002
053003
RADIOACTIVE EFFLUENTS
CHEMICAL AND THERMAL EFFLUENTS