Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Karst Hydrology and Chemical Contamination.
Author Field, M. S. ;
CORP Author Environmental Protection Agency, Washington, DC. Office of Health and Environmental Assessment.
Publisher 1993
Year Published 1993
Report Number EPA/600/J-93/510 ;OHEA-E-358;
Stock Number PB94-135134
Additional Subjects Karst hydrology ; Water pollution ; Path of pollutants ; Water flow ; Subsurface drainage ; Subsurface flow ; Ground water ; Aquifers ; Drainage effects ; Infiltration ; Chemical compounds ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB94-135134 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 05/14/1994
Collation 27p
Ground-water flow in karst aquifers is very different from flow in granular or fractured aquifers. Chemical contamination may be fed directly to a karst aquifer via overland flow to a sinkhole with little or no attenuation and may contaminate downgradient wells, springs, and sinkholes within a few hours or a few days. Contaminants may also become temporarily stored in the epikarstic zone for eventual release to the aquifer. Flood pulses may flush the contaminants to cause transiently higher levels of contamination in the aquifer and discharge points. The convergent nature of flow in karst aquifers may result in contaminants becoming concentrated in conduits. Once contaminants have reached the subsurface conduits, they are likely to be rapidly transported to spring outlets. Traditional aquifer remediation techniques for contaminated aquifers are less applicable to karst aquifers.