Abstract
A high soluble salt content in processed oil shales or other mineral wastes can pose problems in vegetation establishment on disposal piles and in water quality of drainage from disposal sites. In this field study a fine-textured, saline, processed oil shale was leached or covered with 0.3 m of soil to facilitate vegetation establishment. Salt moved upward into the leached processed shale or into the soil cover during the growing season following vegetation establishment which was facilitated by sprinkler irrigation. After five growing seasons under prevailing climatic conditions averaging 260 mm of precipitation per year the salts had moved downward and soluble salt concentrations in the leached processed shale and soil cover were comparable to the salt concentrations present immediately after these treatments were applied.
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