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ABEL Model - Evaluates a corporation's claim that it cannot afford compliance
costs, clean-up costs or civil penalties.
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ADL Migration Exposure Model -
Developed to estimate the migration of chemicals from polymeric materials
used in home environments where these chemicals could become sources
of indoor air pollution or potable water contamination. An exposure
assessment model can then be used to estimate exposure.
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AQUATOX: A Simulation
Model for Aquatic Ecosystems - AQUATOX is a freshwater ecosystem
simulation model. It predicts the fate of various pollutants, such
as nutrients and organic toxicants, and their effects on the ecosystem,
including fish, invertebrates, and aquatic plants. AQUATOX is a valuable
tool for ecologists, water quality modelers, and anyone involved in
performing ecological risk assessments for aquatic ecosystems.
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Assessment
Tools for the Evaluation of Risk (ASTER) - Developed to assist
regulators in performing ecological risk assessments by providing
high quality data for discrete chemicals.
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BEN Model - Calculates a violator's economic savings from delaying and/or
avoiding pollution control expenditures.
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Better Assessment Science
Integrating Point and Nonpoint Sources (BASINS) - A multipurpose
environmental analysis system for use by state, regional, and local
agencies in performing watershed- and water- quality based studies.
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CASHOUT Model - Calculates the present value of cleanup costs for a
given Superfund site.
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CHEMFLO
-One-Dimensional Water and Chemical Movement in Unsaturated Soils
- one-dimensional screening level model for simulating water and chemical
movement in unsaturated soils.
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Chesapeake Bay
Community Watershed Model
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CORMIX
for Mixing Zones - A mixing zone model that can be used to
assess water quality impacts from point source discharges at surface
or sub-surface levels.
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Enhanced Stream
Water Quality Model (QUAL2E) - A water quality planning tool
for developing total maximum daily loads (TMDLs) and can also be used
in conjunction with field sampling for identifying the magnitude and
quality characteristics of nonpoint sources.
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EPA Model Clearinghouse -
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Green Cross Solar - available from CEAM
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Gridded Model Information Support System
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Hydrologic Evaluation
of Landfill Performance Model
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INDIPAY Model - Evaluates an individual taxpayer's claim that it cannot
afford compliance costs, clean-up costs or civil penalties.
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Kinetics Model and Ozone Isopleth Plotting Package - available
from SCRAM
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Lake Analysis Management System
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Landfill Air Emissions Estimation
Model - Used to estimate emissions of methane, carbon dioxide,
nonmethane organic compounds, and hazardous air pollutants from municipal
solid waste landfills.
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Littoral Ecosystem Risk Assessment Model for Prediction of Risk
of Chemical Stressors Entering the Aquatic Environment
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Metal Speciation Equilibrium Model for Surface and Ground Water
- available from CEAM
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Modeling Capture Zones of Ground-Water Well Using Analytic Elements
- available from CSMoS
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MODFLOW
and MODFLOW
Manual - A series of twenty problem sets that illustrate by
example the use of MODFLOW including modeling principles, input/output
specifics, available options, rules of thumb, and common modeling
mistakes.
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Modular Semi-Analytical Model for the Delineation of Wellhead
Protection Areas - available from CSMoS
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Multi-Chamber
Concentration and Exposure Model - Estimates average and peak
indoor air concentrations of chemicals released from products or materials
in houses, apartments, townhouses, or other residences.
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Numerical Codes for Delineating Wellhead Protection Areas in Agricultural
Regions Based on the Assimilative Capacity Criterion - available
from CEAM
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Parameter Estimation System for Aquifer Restoration Models
- available from CSMoS
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Personal Computer Graphical Exposure Modeling System
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Pesticide
Analytical Model - Vadose zone modeling of the transport of
organic (pesticide) contaminants.
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Prediction
of Radiological Effects resulting from Shallow Trench Operation, consisting
of PRESTO-EPA-CPG model and PRESTO-EPA-POP model - a computer
model for evaluating radiation exposure from contaminated soil layers,
including waste disposal, soil cleanup, agricultural land application,
and land reclamation.
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PRESTO-EPA-POP
: An Operation System for Predicting the Population Health Effects
from the Disposal of Radioactive Waste by Shallow Trenches
- a computer model for evaluating radiation exposure from contaminated
soil layers, including waste disposal, soil cleanup, agricultural
land application, and land reclamation.
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Probabilistic
Dilution Model - Originally developed by the Office of Water,
PDM estimates how often a given concentration of concern may be exceeded
in receiving streams and was integrated into the Reach Scan program.
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Project Model - Calculates the real cost to a defendant of a proposed
supplemental environmental project.
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ReachScan
with Probabilistic Dillution Model and Endangered Species Database
Link - ReachScan, the Probabalistic Dilution Model (PDM),
and the Endangered Species Database (ESDB) have been integrated into
one package for distribution. ReachScan is an integrated surface water
modeling and database system to estimate surface water concentrations,
and determine the presence of endangered species or critical habitats
in the county of a releasing facility. See also, Exposure Assessment
Tools and Models
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Regulatory
and Investigative Treatment Zone Model (RITZ) - Vadose zone
modeling of the transport of contaminants associated with oily wastes.
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Retension
Curve Computer Code (RETC) - Uses theoretical methods to predict
the soil water retention curve and the hydraulic conductivity curve
from measured soil water retention data
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Soil
Transport and Fate Database - Provides information concerning
the behavior of organic and a few inorganic chemicals in the soil
environment.
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Soil Venting Model - available from CSMoS
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Two-Dimensional
Finite Element Program for Multiphase Flow and Multicomponent Transport
(MOFAT) - Two-dimensional flow and transport of three fluid
phases: water, nonaqueous phase liquid, and gas.
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Vadoze
Zone Leaching Model - Simulation of 1-D water and chemical
movement in vadose zone.