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ONSITE ENGINEERING REPORT FOR SOLIDIFICATION/ STABILIZATION TREATMENT TESTING OF CONTAMINATED SOILS
Citation:
Hessling, J., M. L. Smith, S. GitiPour, J. Miller, AND J. Isenburg. ONSITE ENGINEERING REPORT FOR SOLIDIFICATION/ STABILIZATION TREATMENT TESTING OF CONTAMINATED SOILS. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-93/051 (NTIS NTIS PB93-166965), 1993.
Description:
The EPA's Office of Solid Waste and Emergency Response (OSWER) is currently developing land disposal restrictions (LDRs) for contaminated soil and debris (CS&D). The Office of Research and Development, through its Risk Reduction Engineering Laboratory (RREL), is providing support to OSWER by supplying technical data on the performance of selected types of technologies for CS&D treatment. Based on the technical data supplied by RREL and other data obtained from independent sources, OSWER will prepare a regulatory package that establishes BOAT standards for the level of CS&D treatment required prior to land disposal. IT Environmental Programs (ITEP) is providing RREL with technical data on the solidification/stabilization (S/S) treatment technology. This treatment process is designed to achieve one or more of the following objectives: 1) Improve handling and physical characteristics of the waste by producing a solid from liquid or s.emi-liquid wastes. 2) Reduce contaminant solubility in the treated waste. 3) Decrease the exposed surface area across which transfer or loss of contaminants may occur. A pilot-scale test of the S/S technology was conducted in Cincinnati, Ohio, in coordination with IT Corporation and the University of Cincinnati. The test was conducted in two phases. Phase I took place February 20 through April 10, 1991, and Phase II, June 6 through July 5, 1991. Three different binders (portland cement, a cement kiln dust and fly ash mixture, and a fly ash and quicklime mixture) were used in three binder-to-soil ratios each to determine the optimum mixtures for stabilizing lead in soil from the Brown's Battery Breaking Site in Tilden Township, Pennsylvania. The following binders were able to reduce the leachable lead content of the soil to less than 5 mg/L: 45% portland cement, 139.5% kiln dust and fly ash, 77.5% fly ash and quicklime, and 20% portland cement on soil that was heated prior to treatment to remove organic carbon from the soil. This report presents detailed information concerning the operation and sampling andianalysis of the solidification/stabilization treatment process. This report was submitted in fulfillment of Contract No. 68-C9-0036 by IT Environmental Programs, Inc., under the sponsorship of the U.S. Environmental Protection Agency. This report covers a period from t October 1989 to 31 March 1992, and work was completed as of 31 March 1992.