Record Display for the EPA National Library Catalog


Main Title Field Studies on Paraho Retorted Oil Shale Lysimeters: Leachate, Vegetation, Moisture, Salinity, and Runoff, 1977-1980.
Author Kilkelly, M. K. ; Harbert, III, H. P. ; Berg, W. A. ;
CORP Author Colorado State Univ., Fort Collins. Dept. of Agronomy.;Industrial Environmental Research Lab., Cincinnati, OH.
Year Published 1981
Report Number EPA-R-804719; EPA-600/7-81-131;
Stock Number PB81-234742
Additional Subjects Solid waste disposal ; Oil shale ; Lysimeters ; Management planning ; Mathematical models ; Environmental impacts ; Leaching ; Vegetation ; Moisture ; Salinity ; Runoff ; Soil chemistry ; Land disposal ; Paraho process ; Water quality
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB81-234742 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 98p
A disposal scheme for Paraho retorted shale utilizing lysimeters to simulate a low-elevation (dry site) and a high-elevation (moist site) was constructed. Objectives of the study were to investigate (1) vegetative stabilization of Paraho retored shale, as affected by leaching and soil cover treatments; and (2) moisture and soluble salt movement through the soil/shale profile. After intensive management and four growing seasons, only a sparse (2% to 3%) cover of perennial vegetation resulted on the Paraho retorted shale. In contrast, good to excellent cover was established and maintained on the soil control and soil-covered retorted shale treatments. Initial leaching and irrigation for plant establishment produced percolate from drains below the compacted shale zone. The percolate from the Paraho retorted shale treatment measured a maximum electrical conductivity (EC) of 35 mmhos/cm and pH of 11.4. The soil control produced percolate with a maximum EC of 8.5 mmhos/cm and a pH of 8.3. Each spring the high-elevation lysimeter received supplemental irrigation to simulate a zone of higher precipitation. Percolate produced from these irrigations exhibited a general overall reduction in both EC (33 to 11.4 mmhos/cm) and pH (11.4 to 8.6) by 1980 on the Paraho retorted shale treatment. The low-elevation lysimeters did not receive additional spring irrigations and no percolate was produced from the unleached treatments.