ARAMS™ Models

The Multimedia Environmental Pollutant Assessment System (MEPAS) is the basis for many of the screening-level models/calculations, including: releases from contaminant sources; fate/transport in air, streams, vadose zone, and groundwater; multimedia exposure pathways for humans, such as food via uptake through crops and farm animals; human intake; and human health impact/risk calculations. The MEPAS fate/transport models are typically analytical solutions to simplified transport equations for each medium. Other models (e.g, RECOVERY, TPB, TWEM, WEAP, and HELPQ) have been added, and others can be added later as needed. RECOVERY and HELPQ are part of the Corps Automated Dredging Decision, Analysis, and Modeling System ADDAMS.

Several stand-alone models exist under the Model Menu accessible from the ARAMS main screen. Stand-alone models include those that do not need to link (and don't link) to any other components within ARAMS/FRAMES. Such models include the lead models, Trophic Trace and RAMAS Ecorisk. Other models located under the Model Menu, such as the Terrestrial Wildlife Exposure Model (TWEM), Multibox RECOVERY, and RECOVERY, run within FRAMES and do link with other components. They are provided under the stand-alone models menu for convenience should someone be interested in running only one of those models as might be done during model calibration. Descriptions for all ARAMS models can be found in ARAMS Help files and in each model Description (DES) File once ARAMS is installed.