Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title AT123D Execution Using the Data Management Supporting Systems AT123DIN and AT123DOUT. Users Guide (Draft).
CORP Author General Software Corp., Landover, MD.;Environmental Protection Agency, Washington, DC. Office of Pesticides and Toxic Substances.
Year Published 1984
Report Number EPA-68-02-3970; EPA/SW/MT-86/007A;
Stock Number PB86-140654
Additional Subjects Water pollution ; Ground water ; Waste disposal ; Data base management systems ; Programming manuals ; Mathematical models ; Sites ; Water flow ; Hydrodynamics ; Computer applications
Library Call Number Additional Info Location Last
NTIS  PB86-140654 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 41p
Detailed procedures required to execute AT123D through the use of two data management systems. The report is intended to be a comprehensive guide for users who have no specialized computer knowledge. AT123D is a generalized analytical transient one-, two-, and/or three-dimensional computer model designed for estimating the rate of pollutant (radioactive, chemical, or thermal) transport/transformation in a groundwater system. In the search for closed-form solutions to the partial differential equations describing the groundwater flow and transport phenomena, the application of the Green's function is used to its optimum advantage. As a result, the model has many optional capabilities and accepts a variety of source release patterns and configurations.