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Web-based
Groundwater Model
Design Team:
May 1998
Jill Domeier
Linda Stoner
Corporate Collaborators:
Gradient Corporation
McLaren/Hart
Faculty Advisor:
Dr. Bruce Maxim
What is a Groundwater Model?
 Water can exist within pore
spaces between grains of soil
or cracks within rock
 Chemicals can impact water
 Model estimates timeframe
for removing impacted water
What formula is used for the model?
 Gradient Corporation’s formula
(Apr. 1989) to determine the
no. of pore volumes to remove:
( 1 + ( ( soil bulk density/porosity ) x distribution
coefficient ) ) / 2 )
x
( LN ( regulated analyte concentration / initial
analyte concentration )
Who are the users?
 Hydrogeologists
 Environmental Engineers
 Students of Environmental
Science or Hydrogeology
What are the user requirements?
 Guided client data entry
 Automated calculations
 On-line help system
 Model access through Web
What is the design rationale?
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Form Fill-In Reflects the local
terminology and
Color
abbreviations
Terminology
using field
sequences
Sequences
familiar to the
Navigation
client.
What is the design rationale?
 Chunking
 Error
Correction
 Help System
Related values are
grouped with the
associated calculation
to facilitate
processing, error
correction, and help
features.
How was the animation developed?
Story Board Layout
Adobe Illustrator, v. 7.0
Ulead GIF Animator, v. 2.0
GIF Optimization
Why was JavaScript used?
Highly portable, based on
user’s computer and plug-ins
Versatile sound file formats
that rely on user’s computer
Fast programming time
Fast load time
What are the system benefits?
Easy to use
Eliminates messy calculations
Provides access over the web
Tool for ‘what if’ scenarios
One of the first web-based
groundwater models
What about future enhancements?
Data storage capabilities
Graphing functions
Enable variety of shapes
Re-evaluate design after use
Conclusion
This Groundwater Model is an
innovative tool for a specific group
of clients that facilitates
calculations and provides
portability through web access.