1. CTUIR Air Quality Modeling Case Study Theodore A. Haigh Confederated Tribes of the Umatilla Indian Reservation Environmental Science & Technology Program Albert Einstein: Science is a wonderful thing if one does not have to earn one's living at it.

2. 2 Objectives ISC Model Input and output data Areas of Concern Umatilla Army Depot Hanford Agriculture Industry Why

3. 3 Gaussian Model - ISC

4. 4 Other Dispersion Models? Eulerian Fixed coordinate Focus on statistical properties of fluid velocities Eulerian statistics are readily measurable Directly applicable when there are chemical reactions Closure problem – no generally valid solutions Lagrangian Moving coordinate Focus on statistical properties of displacements of groups of particles No closure problem Difficult to accurately determine required particle statistics Not directly applicable to problems involving nonlinear chemical reactions

5. 5 Operating as an Oversight Committee CTUIR checks all model output Verify all output independently Check for consistency Recommendations

6. 6 Health Dose rates and effects Area contamination How long When did contamination occur Half life Environmental degradation How much Where

7. 7 Emergency Planning and Contaminated Areas What if the Army Depot has an accident? Who cleans up the mess Need to know How much Where What They get to clean it up

8. 8 Land Use Ceded areas Traditional lifestyles Agriculture Housing Industrial and commercial development

9. 9 Contamination from Outside the Reservation Power plants Agriculture Government installations Urban sprawl

10. 10 Contamination from Inside the Reservation Industrial activity Agricultural activity Recreational activity

11. 11 Predictions How far How much From where What species

12. 12 Verification Does it all make sense? Validation from other sources

13. 13 What for? Quality Life Environment Education Future development