Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Construction, Monitoring, and Performance of Two Soil Liners.
Author Krapac, I. G. ; Cartwright, K. ; Hensel, B. R. ; Herzog, B. L. ;
CORP Author Illinois State Geological Survey Div., Champaign. ;Illinois Dept. of Energy and Natural Resources, Champaign. Hazardous Waste Research and Information Center.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Publisher 1991
Year Published 1991
Report Number IL/SGS/ENG-141;
Stock Number PB92-124049
Additional Subjects Linings ; Waste disposal ; Water pollution abatement ; Earth fills ; Land pollution abatement ; Hydraulic conductivity ; Standards ; US EPA ; Quality assurance ; Quality control ; Environmental monitoring ; Infiltration ; Tracer techniques ; Design criteria ; Performance standards ;
Library Call Number Additional Info Location Last
NTIS  PB92-124049 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 02/24/1992
Collation 127p
A prototype and large-scale soil liner were constructed to test whether compacted soil barriers in cover and liner systems could be built to meet the standard set by the U.S. Environmental Protection Agency for saturated hydraulic conductivity. In situ ponded infiltration rates into the prototype liner were measured and water containing fluorescein and rhodamine WT dyers was allowed to infiltrate in the prototype liner. Although the liner met the USEPA conductivity requirement, the dye flow paths indicated a need for better bonding between lifts and a reduction in soil clod sizes. These observations suggested that if soil liners are to perform according to design specifications, soil processing prior to construction and rigid construction QA/QC are necessary. The large-scale liner (7.3 c 14.6 x 0.9 m) consisted of six 15-cm compacted lifts. Full-scale equipment was used for compaction, and construction practices were modified on the basis of experience gained from the prototype liner study. The work conducted so far indicates that compacted soil barriers can be constructed to meet the saturated hydraulic conductivity requirements established by the USEPA. Questions regarding methodologies to collect in situ infiltration data have arisen from the research. Differences have been noted in infiltration fluxes, as measured by different types of infiltrometers. Perturbations in measurements of infiltration rates and soil tensions have been correlated with barometric pressure fluctuations and/or temperature changes in the liner.