|BIOCHLOR - data loading
|• Used Microsoft Excel
2000 version of BIOCHLOR with Excel 2003, and it worked without
|• Data entry must be
done manually. Data is entered into a Microsoft Excel spreadsheet.
|• Includes macros to
aid in selecting coefficients.
|BIOCHLOR - graphic
|• Not applicable.
|BIOCHLOR - logical
|• The steps are numbered
in the order the data must to be entered, with the exception of
Step 7, Field Data. These data should be entered early to help in
Step 4, selection of decay coefficient.
|• Help file displays
graphic of spreadsheet; user clicks on section to go directly to
that help file.
|BIOCHLOR - 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 the manual. The selection
of "typical" parameters should be reviewed by the appropriate expert
(hydrogeologist, chemist, or environmental engineer).
|• Knowledge of biotransformation
is useful when using this software. In Step 4, the user is allowed
to adjust the decay coefficients to meet the comparison field data
in Step 7. This step is not possible without knowledge of these
|BIOCHLOR - functionality
|• Natural attenuation
screening tool allows user to evaluate whether the site is suitable
for monitored natural attenuation (MNA) before completing the entire
spreadsheet. This software requires site-specific geochemical and
field parameter data to be accurate.
|• Software provides
a step-by-step process to enter field and chemistry data to develop
graphs of concentration versus distance predicted by two methods
(first-order decay function and instantaneous degradation model)
against observed concentrations in wells along the centerline of
|• User can enter various
simulation times to develop a time series. Animation can be used
to show a succession of curves to illustrate how the plume will
change over time.
|• Graphs that show concentration
versus distance can be displayed in a 1-D graph (centerline) showing
how the contamination moves in the x-direction or in a 3-D (array)
that displays how the contamination moves in the x, y, and z directions.
|• User can display graphs
for each contaminant individually or all of them on one graph. The
predicted curves are graphically compared with field data the user
enters. The user can interactively observe the effect of parameter
values on the predicted curves by changing the values and viewing
|• Target levels can
be entered for each contaminant, and the graphs will display only
the locations that exceed these values.
|• Software calculates
plume mass depending on the size of the model area and the input
|• User can compare MNA
with a pump-and-treat scenario for the site to evaluate whether
MNA is the most cost-effective cleanup method.
|BIOCHLOR - documentation
|•Version 1.0 user manual
and Version 2.2 user manual addendum are available online.
|• Manual discusses in
detail the process of MNA and the Domenico analytical solute transport
|• Help menus are easy
to access with a point and click, and they aid the user in identifying
the type of data needed to use in the model.
|BIOCHLOR - output
|• Software provides
limited output in the form of Microsoft Excel spreadsheets and graphs.
|• Various types of graphs
are offered (1-D, 3-D) and can be animated to show how the contamination
moves at the site over time.
|BIOCHLOR - sources
|• Version 2.2 downloaded
November 15, 2004.
|• Help Menus.
|• User Manual.