An evaluation of slug interference tests for aquifer characterization at the Hanford Site
Slug interference tests are conducted by instantaneously changing the water level in a well and monitoring the aquifer response at one or more observation wells. The applicability of this method for hydraulic characterization of a high permeability unconfined aquifer at the Hanford Site was evaluated. Analytical techniques were used to predict slug interference responses over a range of aquifer hydraulic conditions and observation well distances. This was followed by a field test of the proposed technique. The results showed that slug interference testing can be used to characterize aquifers having transmissivities up to 10{sup {minus}1} m{sup 2}/s compared to a maximum transmissivity of about 10{sup {minus}3} m{sup 2}/s for single-well slug tests. The amplitude of the pressure response measured at the observation well is primarily determined by aquifer storativity, while the time-lag of the pressure peak is mainly controlled by the transmissivity. Several recommendations are made optimizing the results of slug interference tests in higher permeability, unconfined to semiconfined aquifers.
- Research Organization:
- Pacific Northwest Lab., Richland, WA (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 7150761
- Report Number(s):
- PNL-SA-20978; CONF-920851-78; ON: DE93001308
- Resource Relation:
- Conference: Spectrum 92: nuclear and hazardous waste management international topical meeting, Boise, ID (United States), 23-27 Aug 1992
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
AQUIFERS
MONITORING
PERMEABILITY
GROUND WATER
HYDRAULIC CONDUCTIVITY
CHEMICAL WASTES
ENVIRONMENTAL TRANSPORT
HANFORD RESERVATION
HAZARDOUS MATERIALS
RADIOACTIVE WASTES
WELLS
HYDROGEN COMPOUNDS
MASS TRANSFER
MATERIALS
NATIONAL ORGANIZATIONS
NONRADIOACTIVE WASTES
OXYGEN COMPOUNDS
RADIOACTIVE MATERIALS
US DOE
US ERDA
US ORGANIZATIONS
WASTES
WATER
053000* - Nuclear Fuels- Environmental Aspects
540220 - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)
540230 - Environment
Terrestrial- Radioactive Materials Monitoring & Transport- (1990-)