1. General Model Information

Name: BIOSCREEN Natural Attenuation Decision Support System


Main medium: terrestrial
Main subject: biogeochemistry, (eco)toxicology
Organization level: ecosystem
Type of model: not specified (3D)
Main application: decision support/expert system
Keywords: solute transport, Domenico, biodegradation, hydrocarbons, screening, remediation


United States
Environmental Protection

Center for Subsurface
Modeling Supperot
Ada, OK


Fax :


Charles J. Newell and R. Kevin McLeod
Groundwater Services, Inc.
Houston, Texas

James R. Gonzales
Technology Transfer Division
Air Force Center for Environmenal Excellence
Brooks, AFB, San Antonio, Texas


BIOSCREEN is an easy-to-use screening model which simulates remediation through natural attenuation (RAN) of dissolved hydrocarbons at petroleum fuel release sites.
Application: Three-dimensional contaminant transport for dissolved phase hydrocarbons in saturated zone under the influences of oxygen, nitrate, iron, sulfate, and methane limited biodegredation.
The software, programmed in the Microsoft Excel spreadsheet environment and based on the Domenico analytical solute transport model, has the ability to simulate advection, dispersion, adsorption, first order decay and instantaneous reactions under aerobic and anaerobic conditions that have been shown to be the dominant biodegradation processes at many petroleum release sites.
BIOSCREEN includes three different model types:

The model is designed to simulate biodegradation by both aerobic and unaerobic reaction. It was developed for the Air Force Center Environment Excellence (AFCEE) Technology Transfer Division at Brooks Air Force Base by Groundwater Services, Inc., Housten, Texas.

II. Technical Information

II.1 Executables:

Operating System(s):
  • Download Installation Instructions for all CSMoS Software
  • Download BIOSCREEN Installation Disk requires computersystems 486DX 66MHz or faster, minimum 8Mb RAM

    II.2 Source-code:

    Programming Language(s): Microsoft Excel 5.0 for Windows

    II.3 Manuals:

    Download BIOSCREEN Documentation

    II.4 Data:

    III. Mathematical Information

    III.1 Mathematics

    III.2 Quantities

    III.2.1 Input

    III.2.2 Output

    IV. References

    Bedient, P.B., Rifai, H.S. and Newell, C.J., 1994.Groundwater Contamination: Transport and Remediation, Prentice-Hall.

    Connor, J.A., Newell, C.J., Nevin, J.P. and Rifai, H.S., 1994."Guidelines for Use of Groundwater Spreadsheet Models in Risk-Based Corrective Action Design," National Ground Water Association, Proceedings of the Petroleum Hydrocarbons and Organic Chemicals in Ground Water Conference, Houston, Texas, November 1994, pp. 43-55.

    Rifai, H.S., Bedient, P.B., Borden, R.C. and Haasbeek, J.F., 1987.BIOPLUME II - Computer Model of Two-Dimensional Transport under the Influence Oxygen Limited Biodegradation in Ground Water, User's Manual, Version 1.0, Rice University, Houston, TX.

    Wiedemeier, T.H., Miller, R.N., Wilson, J.T. and Kampbell, D.H., 1995."Significance of Anaerobic Processes for the Intrinsic Bioremediation of Fuel Hydrocarbons", 1995. National Ground Water Association, Proceedings of the Petroleum Hydrocarbons and Organic Chemicals in Ground Water Conference, Housten, Texas, November 1995.

    Wilson, J.T., McNabb, J.F., Cochran, J.W., Wang, T.H., Tomson, M.B. and Bedient, P.B., 1985."Influence Of Microbial Adaptation On The Fate Of Organic Pollutants In Groundwater", Environmental Toxicology and Chemistry, v. 4, p. 721-726.

    V. Further information in the World-Wide-Web

    VI. Additional remarks

    Last review of this document by: R. Patzak : 8.October 1997
    Status of the document: -
    last modified by Tobias Gabele Wed Aug 21 21:44:39 CEST 2002

    Go back to Register of Ecological Models (R E M)