Example Air Quality Analysis Checklist

     This checklist formerly appeared as Appendix C of the Guideline on
     Air Quality Models (published as Appendix W to 40 CFR Part 51).
     The checklist has been moved to this website to reduce Appendix W
     text in CFR, and because the checklist itself is not as useful as
     it perhaps once was and is in need of revision.

     This checklist recommends a standardized set of data and a standard
     basic level of analysis needed for PSD applications and SIP
     revisions.  The checklist implies a level of detail required to
     assess both PSD increments and the NAAQS.  Individual cases may
     require more or less information and the Regional modeling contact
     should be consulted at an early stage in the development of a data
     base for a modeling analysis.

     At pre-application meetings between source owner and reviewing
     authority, this checklist should prove useful in developing a
     consensus on the data base, modeling techniques and overall
     technical approach prior to the actual analyses.  Such agreement
     will help avoid misunderstandings concerning the final results and
     may reduce the later need for additional analyses.