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SITE PROGRAM APPLICATIONS ANALYSIS REPORT, INTERNATIONAL WASTE TECHNOLOGIES/GEO CON IN-SITU STABILIZATION/SOLIDIFICATION
Citation:
Sawyer, S. SITE PROGRAM APPLICATIONS ANALYSIS REPORT, INTERNATIONAL WASTE TECHNOLOGIES/GEO CON IN-SITU STABILIZATION/SOLIDIFICATION. U.S. Environmental Protection Agency, Washington, D.C., EPA/540/A5-89/004.
Description:
An evaluation was performed of the International Waste Technologies (IWT) HWT-20 additive and the Geo-Con, Inc. deep-soil-mixing equipment for an in situ stabilization/solidification process and its applicability as an on-site treatment method for waste site cleanup. emonstration was held at a General Electric Co. electric service shop in Hialeah, Florida. onclusions were reached concerning the technology's suitability for use in cleanups of various contaminants and at different locations. he conclusions drawn from the available data are that: (1) immobilization of polychlorinated biphenyls (PCBs) appears likely, although due to low leachate concentrations for both the treated and untreated soils -- a result of the low PCB concentrations in soil encountered in most of the tests -- it cannot be confirmed; (2) heavy metals can probably be immobilized; (3) volatile organics can be reduced to low concentrations in treated soil leachates, but the ability to immobilize is not clear; (4) a small volume increase on the order of magnitude of 5%-1O% can be expected; (5) the solidified material shows satisfactory physical properties -- with high unconfined compressive strengths, moderately low permeabilities, and satisfactory integrity for the wet/dry samples -- but unsatisfactory integrity for the freeze/thaw samples; and (6) microstructural results show dense, low-porosity, homogeneous mass indicating a potential for long-term durability.