Accession Number : ADA243745

Title :   Steam Injection/Vacuum Extraction. Phase 2. Treatability Investigation, Site Characterization, and Design.

Descriptive Note : Final rept.,

Corporate Author : CH2M HILL SACRAMENTO CA

Personal Author(s) : Heglie, Jeff ; Koster, Robert ; Pexton, Rob ; Stewart, Lloyd

Report Date : DEC 1991

Pagination or Media Count : 319

Abstract : The United States Air Force is planning to conduct a pilot test of steam injection and vapor extraction remediation technology at McClellan AFB. This innovative technology, under development by Kent Udell at the University of California at Berkely, combines in situ steam injection into soil in both the vadose (unsaturated) and saturated zone, with vacuum extraction of volatile and semi volatile organic contaminants from the soil. Results of the composite soil samples received to date show the presence of dioxins and dibenzofurans, petroleum hydrocarbons, volatile organics, semi-volatile organics, and polychlorinated biphenyls in the waste fill material. Results of the treatability testing indicate that: (1) low concentrations of dioxins and furans were mobilized by the steam condensate, (2) high concentrations of hydrocarbons were reduced by one order-of-magnitude by the steam, and (3) dioxins and furans appear to be dissolved mainly in the hydrocarbon nonaqueous phase liquid (NAPL) phase. Petroleum hydrocarbon and dioxin concentrations are not high enough to preclude a pilot scale test.

Descriptors :   , AIR FORCE, CONCENTRATION(COMPOSITION), CONDENSATION, CONTAMINANTS, DIOXINS, EXTRACTION, FURANS, HIGH RATE, HYDROCARBONS, INJECTION, LOW LEVEL, ORGANIC MATERIALS, PETROLEUM PRODUCTS, PILOT STUDIES, POLYCHLORINATED BIPHENYLS, SAMPLING, SATURATION, SOILS, STEAM, TEST METHODS, UNITED STATES, VACUUM, VAPORS, VOLATILITY.

Subject Categories : Environmental Health and Safety

Distribution Statement : APPROVED FOR PUBLIC RELEASE