Temporal trend analysis of RCRA groundwater monitoring data

Conference · Fri Apr 01 00:00:00 EST 1994 · Geological Society of America, Abstracts with Programs; (United States)

OSTI ID:6846195

Need, E A ^[1]

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1. Rust Environment and Infrastructure, Naperville, IL (United States)

Statistical analysis of RCRA groundwater monitoring data at a uranium hexafluoride processing facility showed a statistically significant increase in the concentration of gross beta activity in monitor wells downgradient of surface impounds storing calcium fluoride sludge and high pH water. Because evidence of leakage had not been detected in lysimeters installed beneath the impounds, the operator sought an evaluation of other potential causes of the result, including natural variability. This study determined that all five data sets showed either long-term excursionary (spike-like), or seasonal forms of temporal variation. Gross beta had an upward long-term trend with multiple excursions that almost appeared to be seasonal. Gross alpha had an upward long-term trend with multiple excursions that were clearly not seasonal. Specific conductance had both upward and downward long-term trends but no other variations. pH had a downward long-term trend with multiple excursions that were clearly not seasonal. Fluoride had a downward long-term trend without excursions but with clear seasonal variations. The gross beta result that appeared to be a significant change was a spike event on the upward long-term trend.

• OSTI ID: 6846195
• Report Number(s): CONF-9404217-; CODEN: GAAPBC
• Journal Information: Geological Society of America, Abstracts with Programs; (United States), Vol. 26:5; Conference: 27. annual conference of the North-Central Section of the Geological Society of America (GSA), Kalamazoo, MI (United States), 28-29 Apr 1994; ISSN 0016-7592
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
54 ENVIRONMENTAL SCIENCES
GROUND WATER
MONITORING
WATER CHEMISTRY
ILLINOIS
URANIUM HEXAFLUORIDE
ECOLOGICAL CONCENTRATION
ENVIRONMENTAL TRANSPORT
ISOTOPE SEPARATION PLANTS
PH VALUE
WATER POLLUTION
WATER WELLS
ACTINIDE COMPOUNDS
CHEMISTRY
DEVELOPED COUNTRIES
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INDUSTRIAL PLANTS
MASS TRANSFER
NORTH AMERICA
NUCLEAR FACILITIES
OXYGEN COMPOUNDS
POLLUTION
URANIUM COMPOUNDS
URANIUM FLUORIDES
USA
WATER
WELLS
053002* - Nuclear Fuels- Environmental Aspects- Radioactive Effluents- (1992-)
540230 - Environment
Terrestrial- Radioactive Materials Monitoring & Transport- (1990-)