Models and Methods

Models

• American Meteorological Society and the Environmental Protection Agency Regulatory Improvement Committee (AMERIC)Model
  In 1991, the American Meteorological Society and the Environmental Protection Agency initiated a formal collaboration to accelerate the inclusion of recent advances in atmospheric boundary layer understanding into EPA regulatory models. In 1994, AERMIC completed the first version of the AERMIC Model (AERMOD) and its meteorological preprocessor (AERMET). AERMOD is a steady-state plume based model designed for estimating near-field impacts from a variety of industrial source types.
• Center for Exposure Assessment Modeling (CEAM)
  The Center for Exposure Assessment Modeling (CEAM) was established in 1987 to meet the scientific and technical exposure assessment needs of the United States Environmental Protection Agency (U.S. EPA) as well as state environmental and resource management agencies. CEAM provides proven predictive exposure assessment techniques for aquatic, terrestrial, and multimedia pathways for organic chemicals and metals.
• Center for Subsurface Modeling Support (CSMoS)
  The Center for Subsurface Modeling Support (CSMoS) provides public domain ground-water and vadose zone modeling software and services to public agencies and private companies throughout the nation. CSMoS is located in Ada, Oklahoma at the National Risk Management Research Laboratory (NRMRL), the U.S. EPA's Center for Ground-Water Research. The primary aims of CSMoS are to provide direct technical support to EPA and State decision makers in subsurface model applications and to manage and support the ground-water models and databases resulting from the research at NRMRL. This research encompasses the transport and fate of contaminants in the subsurface, the development of methodologies for protection and restoration of ground-water quality, and the evaluation of subsurface remedial technologies.
• Modeling Subsurface Transport of Petroleum Hydrocarbons
  Fate, Transport and Modeling of Fuels and Fuel constituents.
• Models3
  The primary goals for the Models-3/Community Multiscale Air Quality (CMAQ) modeling system are to improve 1) the environmental management community’s ability to evaluate the impact of air quality management practices for multiple pollutants at multiple scales and 2) the scientist’s ability to better probe, understand, and simulate chemical and physical interactions in the atmosphere.
• Multimedia Integrated Modeling System (MIMS)
  There is a growing interest in studying and addressing issues that have influences and effects that cross physical media, such as air, water, and soil. Examples of multimedia problems include atmospheric emissions of nitrogen and mercury that eventually affect surface water and burial of hazardous wastes that leak into groundwater. Numerical models provide an important tool in studying and addressing such issues. These models are computer programs that contain mathematical representations of relevant information and processes.
• Program to Assist in Tracking Critical Habitat (PATCH)
  PATCH is a spatially explicit, individual-based, life history simulator designed to project populations of territorial terrestrial vertebrate species through time. PATCH is ideal for investigations involving wildlife species that are mobile habitat specialists.

Methods

• Analytical Chemistry Methods Manuals
  This document contains the titles, publication numbers, dates of publication, ordering information, abstracts, tables of contents, analyte-method cross reference lists, and Introductions to eight laboratory analytical chemistry methods manuals published by the former Environmental Monitoring Systems Laboratory-Cincinnati (EMSL-Cincinnati) between 1988 and 1995.
• Drinking Water Methods
  An analytical method is a procedure used to analyze a sample in order to determine the identity and concentration of a specific sample component. Analytical methods generally include information on the collection, transport, and storage of samples; define procedures to concentrate, separate, identify, and quantify components contained in samples; specify quality control criteria the analytical data must meet; and, designate how to report the results of the analyses.
• Information Collection Requirements (ICR) Rule - Protozoan Method for Detecting Giardia Cysts and Cryptosporidium Oocysts in Water by a Fluorescent Antibody Procedure
  The publication is an illustrated guide for lab personnel analyzing water samples for Giardia and Cryptosporidium under the ICR.
• Measurement Methodology
  This portal serves as a link to methods sites maintained by a variety of Agency and external organizations. Measurement methods that can be addressed through this site include both field and laboratory methods for: chemical, physical, microbiological, and radiochemical analysis; ecological assessment; and sampling.