Geohydrologic reconnaissance of a ground-water contamination problem in the Argonne Road area near Spokane, Washington

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Authors:Dion, N. P.
Author Affiliations:Primary:
U. S. Geol. Surv., Tacoma, WA, United States
Source:Reston, VA [Water-Resources Investigations - U. S. Geological Survey, No.WRI86-4173, 37p. Publisher: U. S. Geological Survey,], United States. ISSN: 0092-332X
Publication Date:1987
Note:In English. 24 refs.
Summary:Three domestic wells that withdraw groundwater from an alluvium-filled trough cut into granite were found to be contaminated with the organic solvents tetrachloroethene, trichloroethene, 1,1,1-trichloroethane, and 1 ,2-trans-dichloroethene. The suspected source of contamination is a nearby septic-tank sludge disposal area. There is concern that the affected aquifer is tributary to the Spokane aquifer, which has been accorded ' sole source ' status by the U.S. Environmental Protection Agency. Preliminary estimates suggest that groundwater in the area is moving toward the Spokane aquifer and that the transit time may range from 2.5 to 25 years. Because of longitudinal dispersion, however, the plume of contaminants may move at a faster rate than the ambient groundwater and may arrive at given destinations more quickly than calculated above. A literature search has indicated that the dissolved solute phase of the contaminants will not be significantly affected by sorption, volatilization, chemical activity, or biodegradation. Because of the preliminary nature of the investigation, many questions relating to the extent of contamination remain unanswered. A list of suggested additional studies to answer those questions and to refine and confirm the findings of this investigation is presented. (Author 's abstract)
Subjects:Aquifers; Engineering geology; Environmental geology; Ground water; Organic compounds; Pollutants; Pollution; Solutes; Surveys; Transport; USGS; Waste disposal; Columbia Plateau; Spokane County Washington; United States; Washington; Argonne Road; East-central Washington; Organic materials; Spokane region
Coordinates:N474000 N474500 W1171500 W1171800
Record ID:1987073556
Copyright Information:GeoRef, Copyright 2018 American Geosciences Institute. Reference includes data from USGS product, Selected Water Resources Abstracts, Reston, VA, United States
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