Implications of the Implementation of the MOBILE6 Emissions Factor Model on Project-Level Impact Analyses Using the CAL3QHC Dispersion Model

Final Report

August 2004

04-045

Prepared for:

Federal Highway Administration
Office of Natural and Human Environment

Prepared by:

Edward Carr
ICF Consulting
60 Broadway
San Francisco, CA 94111
(415) 677-7100

Acknowledgements

Special thanks go to Ana Alvarez for performing hundreds of MOBILE6, MOBILE5 and MOBILE4.1 simulations. Credit is due to Seth Hartley for the multiple CAL3QHC and CALINE3 model simulations. David Pierce was invaluable in assisting in the telephone and e-mail interviews. Thanks are also due to Paul Heishman of PH/PE, Incorporated for his cooperation and technical assistance in the practical aspects of project-level air quality modeling and in screening procedure development.