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KINEMATIC MODELING OF MULTIPHASE SOLUTE TRANSPORT IN THE VADOSE ZONE
Charbeneua, R. J., J W. Weaver*, AND V. J. Smith. KINEMATIC MODELING OF MULTIPHASE SOLUTE TRANSPORT IN THE VADOSE ZONE. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-89/035 (NTIS 89-207948), 1989.
The goal of this research was the development of a computationally efficient simulation model for multiphase flow of organic hazardous waste constituents in the shallow soil environment. Such a model is appropriate for investigation of fate and transport of organic chemicals introduced to the soil through spills on the ground surface, leakage from surface impoundments or underground storage tanks, or land treatment of hazardous wastes. During the initial phases of a site investigation there usually does not exist sufficient data to support the application of comprehensive, computationally expensive numerical models. Simplified physically based models which can address the transport of an organic constituent experiencing volatilization, multiphase partitioning, biodegradation, and migration may be preferred. Two models based on the kinematic theory of multiphase flow are developed and presented herein, along with a number of illustrative examples. The Kinematic Oily Pollutant Transport (KOPT) model assumes steady infiltration of water based on the expected annual infiltration rate; the Kinematic Rainfall and Oily Pollutant Transport (KROPT) model includes transient hydrologic phenomena (evaporation and infiltration) along with a model for stochastic generation of rainfall. The examples presented suggest that the KOPT model may be preferred for most applications.
Record Details:Record Type: DOCUMENT (PUBLISHED REPORT/REPORT)
Organization:U.S. ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL RISK MANAGEMENT RESEARCH LABORATORY
SUBSURFACE PROTECTION AND REMEDIATION DIVISION