Modeling for PSD/NSR: The answers to questions provided here are not intended to replace or supersede recommendations provided in Appendix W to 40CFR Part 51 (Guideline on Air Quality Models). Applications of this modeling system for the purpose of PSD/NSR permits should be coordinated with appropriate State/Federal authorities.
NOTE: This FAQ database was compiled prior to Lakes Environmental Software's acquisition of the CALPUFF modeling system. The information represents the best available responses at the time it was written. Some of the references and links may no longer be accessible or relevant. Updates to the page will be made as time allows.
1.0 Overview
2.0 Meteorological Processing (CALMET)
2.1 Terrain Elevation Data Processing (TERREL)
2.2 Land Use Data Processing (CTGCOMP, CTGPROC)
2.3 Upper Air Data Processing (READ62)
2.4 Surface Observation Data Processing (METSCAN, SMERGE)
2.5 Precipitation Data Processing (PXTRACT, PMERGE)
2.6 Mesoscale Meteorological Data Processing (CALMM5)
2.8 Listing and Review of Results (PRTMET)
3.0 Concentration and Deposition Simulation (CALPUFF)
3.2 Background Values for Ozone and Ammonia
4.0 Auxiliary Intermediate Programs (CALSUM, APPEND, POSTUTIL)
5.0 Summary of Results (CALPOST)
5.2 Listing and Review of Results