Introduction

This module describes project efforts to implement map-based modeling for air transport pathways. Emission of volatile chemicals to the environment is a significant source mechanism. Understanding the concentrations and locations of chemicals of concern in the atmosphere is important to quantifying exposures to humans and ecological receptors. The naUTilus model was developed by the University of Texas at Austin to describe the emission of volatile chemicals, particularly volatile organic chemicals, from industrial sewers. The model can be used to estimate emissions and to plan reduction strategies through model simulation. The project is presented in this module as an exercise, and the Master's thesis of C.F.H. How demonstrates the connection of a facility scale ArcView application with the naUTilus model. This application preserves the spatial relationships between the sewer connections and the emissions. It also greatly simplifies the model input development and provides a tool for display and analysis of the model output. This module also includes a class project linking a simple air dispersion model coded in Visual Basicã to ArcView.

Resources on this CD

• Running naUTilus from ArcView : describes how to connect the naUTilus sewer volatile emissions model with ArcView.
• naUTilus executable files: ISBL.exe is for single process unit analyses and OSBL.exe is for facility-wide analyses.
• naUTilus user documentation.

• Lesley Hay Wilson: Simple Environmental Exposure Models in a GIS Framework
• Project report

• How, C. F. H. Fugitive Emissions of VOCs from Industrial Sewer Networks: Integration of naUTilus and ArcView, CRWR Online Report 98-2, May 1998.

Primary Contact

Lesley Hay Wilson
Center for Research in Water Resources
The University of Texas at Austin
Austin, TX 78712

E-mail: hay_wilson@mail.utexas.edu