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Abstract
Perchlorate contamination from anthropogenic sources has been released into the Rialto-Colton, California, USA, groundwater flow system since the 1940s during its production, distribution, storage, and use. Preliminary analysis of lithological, geophysical, and water-chemistry data provided new understanding of the pathways of perchlorate migration that aid in assessing the susceptibility of drinking-water supplies to contamination within the Rialto-Colton basin. Vertical migration of perchlorate into the main water-producing aquifers is restricted by an areally extensive old soil surface; however, perchlorate data indicate contamination below this soil surface. Possible pathways for the downward migration of the contaminated water include wellbore flow and discontinuities in the old soil surface. Horizontal migration of perchlorate is influenced by lithology and faults within the basin. The basin fill is a heterogeneous mixture of boulders, gravel, sand, silt, and clay, and internal faults may restrict perchlorate migration in some areas.
Study Area
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Aquifer susceptibility to perchlorate contamination in a highly urbanized environment |
| Volume | 324 |
| Year Published | 2007 |
| Language | English |
| Publisher | International Association of Hydrological Sciences |
| Contributing office(s) | California Water Science Center |
| Description | 7 p. |
| Larger Work Type | Conference Paper |
| Larger Work Title | Groundwater quality: securing groundwater quality in urban and industrial environments : GQ 07 |
| First page | 156 |
| Last page | 163 |
| Conference Title | 6th International Groundwater Quality Conference |
| Conference Location | Fremantle, Australia |
| Conference Date | December 2-7 2007 |
| Country | United States |
| State | California |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |