Main Title |
Estimation of Free Hydrocarbon Volume from Fluid Levels in Monitoring Wells. |
Author |
Lenhard, R. J. ;
Parker., J. C. ;
|
CORP Author |
Virginia Polytechnic Inst. and State Univ., Blacksburg. Center for Environmental and Hazardous Material Studies.;Robert S. Kerr Environmental Research Lab., Ada, OK. |
Publisher |
c1990 |
Year Published |
1990 |
Report Number |
EPA/600/J-90/538; |
Stock Number |
PB91-233387 |
Additional Subjects |
Hydrocarbons ;
Observation wells ;
Ground water ;
Water pollution sampling ;
Oil spills ;
Underground storage ;
Storage tanks ;
Vertical motion ;
Particle size distribution ;
Density(Mass/volume) ;
Aquifers ;
Saturation ;
Remedial action ;
Fluid boundaries ;
Land pollution ;
Environmental transport ;
Fluid pressures ;
Reprints ;
Light NonAqueous Phase Liquid
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB91-233387 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
13p |
Abstract |
Under the assumption of local vertical equilibrium, fluid pressure distributions specified from well fluid levels in monitoring wells may be used to predict water and hydrocarbon saturation profiles given expressions for air-water-hydrocarbon saturation-pressure relations. Vertical integration of the oil-saturation profile yields the actual oil volume in porous media per unit area adjacent to the well. Three-phase fluid distributions are predicted using a scaling procedure which requires knowledge of two-phase air-water saturation-pressure relations, hydrocarbon density, and hydrocarbon surface tension. Results reveal that whereas the distance above an oil-water table at which oil saturations become zero may be independent of soil type, estimated light nonaqueous phase liquid (LNAPL) volumes per unit area may differ substantially. Hence, estimates of LNAPL volume cannot be inferred directly from soil LNAPL thickness or well LNAPL thickness data without consideration of effects of soil properties. Furthermore, it is demonstrated that no simple linear conversion scheme can be employed to relate the height of LNAPL in a monitoring well to the LNAPL volume in porous media. Effects of grain-size distribution and well LNAPL thickness on the ration of actual LNAPL thickness in the aquifer to well LNAPL thickness are shown. |
Supplementary Notes |
Pub. in Ground Water, v28 n1 Jan-Feb 90. Sponsored by Robert S. Kerr Environmental Research Lab., Ada, OK. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Estimation of Free Hydrocarbon Volume from Fluid Levels in Monitoring Wells. |
Category Codes |
68D; 48G |
NTIS Prices |
PC A03/MF A01 |
Primary Description |
600/15 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
129822325 |
Origin |
NTIS |
Type |
CAT |