Well network and measurement schedules for monitoring water-level changes beneath the separations area of the Hanford Site
In support of the Basalt Waste Isolation Project, Pacific Northwest Laboratory selected a network of wells and measurements schedules for monitoring water-level changes beneath the Separations Area, which encompasses the 200-East and 200-West Areas of the Hanford Site. The purpose of the water-level monitoring network was to allow collection of basic data that could be used to investigate how changes in wastewater discharges in the Separations Area might affect hydraulic heads in the deeper confined aquifers. Pacific Northwest Laboratory monitored water levels in 78 originally selected wells from May 29, 1984, through September 3, 1985. During this monitoring period, some originally selected wells found to unusable, and other wells (or piezometers) were added to the monitoring well network to replace the unusable wells or to increase the amount of data from selected areas. The final monitoring network consisted of 92 wells ad piezometers (completed at various intervals in the unconfined and uppermost confined aquifers) and 5 surface-water gaging stations. Completion uncertainties exist for a number of the wells. Recommendations for resolving these uncertainties include surveying, visual inspection via a downhole camera, geophysical logging, and, in some cases well renovation. 7 refs., 2 figs., 6 tabs.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- DOE/AD
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 6599837
- Report Number(s):
- PNL-5895; ON: DE90017516
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
WATER TABLES
MONITORING
WATER WELLS
WELL LOGGING
AQUIFERS
ENVIRONMENTAL IMPACTS
GEOPHYSICAL SURVEYS
HANFORD RESERVATION
PIEZOMETRY
SURFACE WATERS
WASTE WATER
HYDROGEN COMPOUNDS
LIQUID WASTES
NATIONAL ORGANIZATIONS
OXYGEN COMPOUNDS
SURVEYS
US DOE
US ERDA
US ORGANIZATIONS
WASTES
WATER
WELLS
580000* - Geosciences
540310 - Environment
Aquatic- Basic Studies- (1990-)