June 12, 2001

U.S. Environmental Protection Agency
Office of Transportation and Air Quality


Heavy-Duty Diesel Emissions Database


The data in this file (hdd-db7.xls) was used in the development
of a model correlating diesel fuel properties with emissions of
regulated pollutants.  The model was developed by the
Environmental Protection Agency using resources at Southwest
Research Institute.  This version of the database includes all
repeat data, and all test cycle data that was rejected in this
analyses.

Additional information about the project can be found at:
http://www.epa.gov/otaq/models/analysis.htm.

For questions about this database, contact David Korotney at
korotney.david@epa.gov

Database version 7
June 12, 2001