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Hydrologic studies within the Pasco Basin

Technical Report ·
OSTI ID:6724424

As part of the Basalt Waste Isolation Project (BWIP), hydrologic studies are being performed to provide an evaluation of groundwater systems within the Columbia River Basalt Group. These studies are focused on the Hanford Site, which is located within the Pasco Basin in south-central Washington. Hydrologic studies within the Pasco Basin involve the areal and vertical characterization of hydraulic head, hydrologic properties, and hydrochemical content for the various basalt groundwater systems. Currently, in excess of 150 test intervals have been tested for hydraulic properties, while in excess of 80 horizons have been analyzed for hydrochemical characteristics at about 30 borehole sites within the Pasco Basin. Data obtained from these studies provide input for numerical modeling of groundwater flow and solute transport. Results from numerical modeling are used for evaluating potential waste migration as a function of space and time. In the Pasco Basin, geologic structures influence groundwater flow patterns within basalt aquifer systems. Potentiometric data and hydrochemical evidence collected from recent studies indicate that geologic structures act as areal hydrologic barriers and in some instances, regions of enhanced vertical conductivity. 8 figures.

Research Organization:
Rockwell International Corp., Richland, WA (USA). Energy Systems Group
DOE Contract Number:
AC06-77RL01030
OSTI ID:
6724424
Report Number(s):
RHO-BW-SA-251-P; CONF-821205-11; ON: DE83001749
Country of Publication:
United States
Language:
English

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Related Subjects

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12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
58 GEOSCIENCES
580100 -- Geology & Hydrology-- (-1989)
BASALT
CHEMISTRY
DATA
EXPERIMENTAL DATA
FEASIBILITY STUDIES
FLUID FLOW
FLUID MECHANICS
FUNCTIONAL MODELS
GEOCHEMISTRY
GEOLOGIC DEPOSITS
GROUND WATER
HANFORD RESERVATION
HYDRAULICS
HYDROGEN COMPOUNDS
HYDROLOGY
IGNEOUS ROCKS
INFORMATION
MANAGEMENT
MECHANICS
NATIONAL ORGANIZATIONS
NUCLEAR FACILITIES
NUMERICAL DATA
OXYGEN COMPOUNDS
PILOT PLANTS
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTE FACILITIES
ROCKS
SITE SELECTION
UNDERGROUND DISPOSAL
US DOE
US ERDA
US ORGANIZATIONS
VOLCANIC ROCKS
WASTE DISPOSAL
WASTE MANAGEMENT
WATER