|BIOPLUME III- data
|• Model input values
are entered manually and digitized within the program.
|BIOPLUME III - graphic
|• Base maps can be loaded
to the model in a bitmap (bmp) file format in the Domain menu (Domain:Base
|BIOPLUME III - logical
| • Menus along the top
of screen are arranged to follow logical flow from left to right.
Some buttons are grayed out until the user completes the necessary
|BIOPLUME III - expert
|• Site-specific data
should be used whenever possible to estimate model parameters so
that the model is representative of potential site conditions. Although
site-specific data are always preferred, "typical" ranges of many
of the input parameters are provided in Appendix I of the manual.
The selection of "typical" parameters should be reviewed by the
appropriate expert (hydrogeologist, chemist, or environmental engineer).
|• The user should have
some experience in reading and understanding numerical model output
files, such as are commonly used in FORTRAN-based groundwater flow
and transport models. Model output files should be analyzed after
significant changes have been made or whenever the model results
|• A sensitivity analysis
should be conducted to evaluate the sensitivity of model results
to the input parameters, particularly when "typical" values are
used rather than parameters estimated from site-specific field data.
Sensitivity analysis is discussed in Section 4.3.2 of the manual.
|BIOPLUME III - functionality
| • The graphical user
interface includes tools to digitize and contour head and concentration
distributions, which facilitate data input.
|• The user can animate
the model results by clicking "AVI animation" under the Results
menu to produce a video clip. The video clip is composed of the
graphical representation of the plume or the piezometric surface
at the end of each time step of a transient model run. The video
clip can be shared with any stakeholders; Windows MediaPlayer or
similar software is required to view the clip.
|• The user must print
the model report (File:Report) to troubleshoot or analyze model
results. The model report may consist of 50 to 100 pages of output,
so the computer should be connected to a printer. Output files are
similar in format to raw Method of Characteristics (MOC) files.
| • Complex scenarios
will cause BIOPLUME III to crash. User experience suggests that
a large grid (more than 50 rows by 50 columns) or a model with more
than 10 to 15 pumping wells may crash the model run.
|• A new version of BIOPLUME
(BIOPLUME IV) is in beta-testing and should be available soon. The
new version is reported to accept a 100 x 100 grid without crashing.
| • Error messages are
unclear to general technical staff and may require a trained FORTRAN
programmer to decipher them.
|BIOPLUME III - technical
| • BIOPLUME III is well-suited
to model remediation scenarios that involve monitored natural attenuation
(MNA) and pump-and-treat, with associated components such as source
removal, injection of oxygenated water, or infiltration of oxygenated
water. It is not well-suited to accurately represent the effects
of air sparging.
|• Although BIOPLUME
III appears to be designed primarily for benzene, toluene, ethylbenzene,
and xylene (BTEX) plumes (all discussions in the manual of specific
contaminants refer to BTEX constituents), it has been successfully
applied to chlorinated solvent sites (EPA 2001).
|• BIOPLUME is generally
used to predict changes to chemical concentratrions and hydraulic
heads assuming simplified aquifer geometry, stresses and boundary
conditions. Detailed hydrogeological studies require the calibration
of a flow model using a high resolution, three-dimensional model
such as MODFLOW or FEMWATER.
|BIOPLUME III - documentation
|• Users manual has clear
layout, including sections on "Getting Started/Tutorial," "Theoretical
Development," "User's Guide," and several appendices.
|• Appendices provide
useful information that should be reviewed before BIOPLUME III is
used. Appendix I provides information on input data parameters.
Appendix II discusses how to interpret output files. The user will
need to refer to these appendices for help in interpreting and troubleshooting
|• Appendix A provides
detailed information on the Method of Characteristics (MOC) particle
tracking code that BIOPLUME III is built around.
|• Appendix B is a concise
discussion of the U.S. Air Force intrinsic remediation (natural
attenuation) protocol and describes implementation of BIOPLUME III
in the broader context of a natural attenuation study.
|• There are no Help
|BIOPLUME III - output
|• Some graphics can
be exported in a bitmap (bmp) format from the Results menu after
a model run, specifically the head distribution and any concentration
distribution. The user clicks on the Bitmap Capture button in the
lower left of the toolbox to save the image to a bitmap. Output
cannot be saved to a vector format.
| • Model-estimated values
of concentration or hydraulic head can be exported using the Spyglass
tool in the upper left-hand corner of the Results toolbox (the toolbox
that is active when the user is in the Results menu). The user can
delineate an area of the grid to export results by clicking the
tool and then dragging the cursor over the grid.
|BIOPLUME III - sources
|• Version 1.0 (September
1997) downloaded December 14, 2004.
|• Users Manual (EPA/600/R-98/010).
|• EPA. 2001. Evaluation
of the Protocol for Natural Attenuation of Chlorinated Solvents:
Case Study at the Twin Cities Army Ammunition Plant. EPA Office
of Research and Development. EPA/600/R-01/025. March