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Internet Geographical Exposure Modeling System (IGEMS)
What Does IGEMS Do?IGEMS is a modernization of OPPT's older Graphical Exposure Modeling System and PCGEMS tools. IGEMS brings together in one system several EPA environmental fate and transport models and some of the environmental data needed to run them. IGEMS includes models and data for ambient air, surface water, soil, and ground water, and makes the models much easier to use than their stand-alone counterparts. IGEMS will have graphics and Geographical Information System (GIS) capabilities for displaying environmental modeling results.
How Does IGEMS Work?
IGEMS will have interactive menus to guide the user in selecting models, selecting and organizing data to be used as input to model runs, executing model runs, and presenting model outputs. The menus will also provide user help. The system will be modular in design, so that EPA can easily add other models to the system in the future. IGEMS will also have the capability of retrieving some data from EPA Oracle databases, such as the TRIS data in the EPA Envirofacts Data Warehouse.
What Do I Need to Use IGEMS?
Several of the models in IGEMS require extensive input data. Where possible, IGEMS will include default data sets and will provide access to the required databases either within IGEMS or via EPA's Envirofacts Data Warehouse. The user will need to obtain some of the necessary input data, such as physical-chemical property data, from other sources.
How Are IGEMS' Data Used?
Each model produces results files which the user can save and can use with statistical software applications or other database programs. The user can apply the IGEMS graphical and Geographical Information System capabilities to view the results as isopleths, vectors, etc., and as geographical presentations, including overlays with population, geographical location, concentration, etc. Risk assessors can use the potential dose rates estimated by IGEMS in assessing potential exposure and risk at a fairly detailed level.
What Type of Computer System Do I Need?
To run IGEMS successfully, we strongly recommend a Pentium 4 or above with a minimum of 1 Gig memory (RAM). Please close all other unnecessary programs to free up more memory for your PC. We also strongly recommend a fast Internet connection, such as a cable modem, DSL, or T1 line. You can use either MS Internet Explorer or Firefox with Java plug-in to run IGEMS.
What Is IGEMS Status and Availability?
IGEMS is currently being designed for the EPA Office of Pollution Prevention and Toxics, Economics, Exposure, and Technology Division, Exposure Assessment Branch. An IGEMS Beta Test version is available now and we welcome you to participate in this testing phase; please do not use the Beta version for regulatory or planning purposes. The urls of the Beta-IGEMS are:
https://iaspub.epa.gov/igems-jsp (ISCST)
https://iaspub.epa.gov/igems (Sesoil, AT123D, PROUTE)
To apply for an IGEMS account please go to the first page of IGEMS and click on the register memu and fill out the form. After you receive your IGEMS user ID and initial password, you will need to activate your account to test the system. You only need to apply one set of ID/password for all models. The current IGEMS Beta Test Version have two parts: IGEMS and IGEMS-JSP. Three models ( SESOIL; AT123D; PROUTE) in IGEMS are updated modules from the previous IGEMS which requires a plug-in library. The plug-in library will be loaded automatically onto the user’s PC the first time a user logs into the IGEMS'. The IGEMS-JSP was developed with JSP technology which does not require any plug-in library; in the future all other models in IGEMS will be migrated into the JSP version. All these models are still undergoing testing and many of the default data sets in these models have not yet been updated. The TRIAIR and TRIWATER are not implemented in this version of IGEMS, so please do not try to run them. Notify Me Of Future Updates
Who Can I Call for More Information?
For more information about the model, contact:
Wen-Hsiung Lee
U.S. Environmental Protection Agency
1200 Pennsylvania Avenue N.W. (Mail Code 7406M)
Washington, DC 20460
Phone: (202) 564-8544
E-mail: lee.wen-hsiung@epa.gov