Main Title |
Passive Sampling of Groundwater Monitoring Wells without Purging: Multilevel Well Chemistry and Tracer Disappearance. |
Author |
Powell, R. M. ;
Puls, R. W. ;
|
CORP Author |
ManTech Environmental Technology, Inc., Ada, OK.;Robert S. Kerr Environmental Research Lab., Ada, OK. |
Publisher |
c1993 |
Year Published |
1993 |
Report Number |
EPA/600/J-93/129; |
Stock Number |
PB93-181170 |
Additional Subjects |
Ground water ;
Water pollution sampling ;
Water quality ;
Aquifers ;
Observation wells ;
Tracer techniques ;
Water flow ;
Environmental transport ;
Concentration(Composition) ;
Water chemistry ;
Colloids ;
Reprints ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB93-181170 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
28p |
Abstract |
It is essential that the sampling techniques utilized in groundwater monitoring provide data that accurately depicts the water quality of the sampled aquifer in the vicinity of the well. Due to the large amount of monitoring activity currently underway in the U.S.A. it is also important that the techniques be efficient. The study examines the differences in water chemistry between the casing and screened interval volumes of four wells at a field site, then compares the results to purged values for the same wells. Tracer experiments, utilizing both colloidal particles and dissolved species as tracers, are presented to illustrate differences in natural flushing between the screened and cased intervals. The data from the tracer removal were then utilized to estimate groundwater flow velocities in the vicinities of the boreholes. The possibility exists that such passive sampling techniques would be useful at many of the sites currently undergoing routine monitoring. |