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Timothy J. Sullivan(1), Bernard J. Cosby(2), John A Laurence(3),
Robin L. Dennis(4), Kristi Savig(5), James R. Webb(2), ArthurJ. Bulger(2).
Mark Scruggs(6), Christi Gordon(7), John Ray(6), Henry Lee(8),
William E. Hogsett(8), Heather Wayne(5), Debbie Miller(6), and Jeffrey S. Kern(9)

May 2003

(1) E&S Environmental Chemistry, Inc., Corvallis, OR
(2) Department of Environmental Sciences, University of Virginia, Charlottesville, VA
(3) Formerly with U.S. Environmental Protection Agency, National Health and Environmental Effects Laboratory, Western Ecology Division,Corvallis. OR; nowwith USDA Forest Service, Pacific Northwest Research Station, Corvallis, OR
4) National Oceanic and Atmospheric Administration, Air Resources Laboratory, Atmosperic Sciences Modeling Division, Research Triangle Park, NC
(5) Air Resource Specialists, Inc., Fort Collins, CO
(6) National Park Service.Air Resources Division, Denver, CO
(7) Shenandoah National Park, Luray, VA
(8) U.S Environmental Protection Agency, National Health and Environmental Effects Laboratory, Western Ecology Division,Corvallis, OR
(9) Dynamic Corporation, Corvallis, OR


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Executive Summary

Report Cover

Front Material (Table of Contents)

Section I Introduction

Section II Environmental Setting

Section III Scientific Background

Section IV Emissions and Air Pollutant Transport

Section V Air Quality and Deposition

Section VI Environmental Receptors and Environmental Quality

Section VII Future Conditions and Prognosis for Recovery

Section VIII Summary of Sensitive Receptor Impacts and Conclusions

Section IX References

Appendix A Weighting Function for W126 Ozone Exposure Index

Appendix B Visibility Metrics

Appendix C RADM Model Description

Appendix D Characteristics of Streams

Appendix E Water Chemistry Trends Data

Appendix F MAGIC Model Description

Appendix G TREGRO Model Description

Appendix H Details of Regional Ozone Interpolation

Appendix I Equations Describing the Simulated Effect of Ozone

Appendix J Projected Changes in Tree Mass