Record Display for the EPA National Library Catalog


Main Title Exposure Analysis Modeling System (EXAMS) : user manual and system documentation /
Author Burns, Lawrence A.
Other Authors
Author Title of a Work
Cline, David M.
Lassiter, Ray R.
CORP Author Environmental Research Lab., Athens, GA.
Publisher Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1982
Report Number EPA-600/3-82-023
Stock Number PB82-258096
OCLC Number 09220653
Subjects Pollution--Computer programs ; Pollution--Data processing ; Pollution--Environmental aspects--Computer programs ; Pollution--Environmental aspects--Data processing ; Chemicals--Environmental aspects--Computer programs ; Chemicals--Environmental aspects--Data processing
Additional Subjects Organic compounds ; Manuals ; Mathematical models ; Water pollution ; Concentration(Composition) ; Transport properties ; Industrial wastes ; Exposure ; Computer programs ; Computer programming ; Exposure analysis modeling system ; Path of pollutants
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EHAM  QD255.5.E4B87 Region 1 Library/Boston,MA 04/29/2016
EHBD  EPA-600/3-82-023 CEMM/ACESD Library/Narragansett,RI 03/16/2007
EJED  EPA-600/3-82-023 OCSPP Chemical Library/Washington,DC 10/14/1994
EKBD  EPA-600/3-82-023 Research Triangle Park Library/RTP, NC 07/25/2003
ELBD ARCHIVE EPA 600-3-82-023 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ESAD  EPA 600-3-82-023 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB82-258096 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation x, 443 pages : illustrations ; 28 cm
The Exposure Analysis Modeling System (EXAMS) was designed for rapid evaluation of the behavior of synthetic organic chemicals in aquatic ecosystems. From the chemistry of a compound and the relevant transport and physical/chemical characteristics of the ecosystem, EXAMS computes: (1) Exposure: the ultimate (steady-state) expected environmental concentrations (EECs) resulting from a specified pattern of (long-term, time-invariant) chemical loadings, (2) Fate: the distribution of the chemical in the system and the fraction of the loadings consumed by each transport and transformation process, and (3) Persistence: the time required for effective purification of the system (via export/transformation processes) once the chemical loadings cease. EXAMS combines loadings, transport, and transformations into a set of differential equations using the law of conservation of mass as an accounting principal. This law accounts for all of the chemical mass entering and leaving a system as the algebraic sum of external loadings, transport processes that export the compound from the system, and transformation processes that convert the parent compound to daughter products.
"July 1982"--Cover. Includes bibliographical references (pages 275-287). "EPA-600/3-82-023."