APPENDIX F$_{ }$ 108$_{ }$ Analysis  Type  Source  Type  Parameter  Data Source  Description  http://www.epa.gov/ttn/scram/dispersion_prefrec.htm#aermod.  Meteorological  AERMET  AERMET is a meteorological data preprocessor for AERMOD.  AERMET processes commercially available or custom on-site met data  and creates two files: a surface data file and a profile data file.  Information on the AERMET processor is available from the EPA at the  following website:  http://www.epa.gov/ttn/scram/metobsdata_procaccprogs.htm#aermet.  National Climate Data  Center  (NCDC)  Climate and historical data and information is available from this source.  The data are site-specific and based upon the most recent set of “real- world” measurement data near an airport. This information is available at  the following website: http://www.ncdc.noaa.gov/cdo-web/  Mixing Height  EPA  EPA’s Mixing Heights, Wind Speeds, and Potential for Urban Air  Pollution Throughout the Contiguous United States . This 1972  publication (also called the “Holzworth” report) contains data and graphs  depicting mixing heights for mean annual morning and mean summer  afternoon conditions across the U.S., by season (e.g., winter, summer,  etc.). This document can be accessed at the following website:  http://nepis.epa.gov/Exe/ZyNET.exe/20013CDS.TXT?ZyActionD=ZyDo  cument&Client=EPA&Index=Prior+to+1976&Docs=&Query=&Time=  &EndTime=&SearchMethod=1&TocRestrict=n&Toc=&TocEntry=&QF  ield=&QFieldYear=&QFieldMonth=&QFieldDay=&IntQFieldOp=0&E  xtQFieldOp=0&XmlQuery=&File=D%3A%5Czyfiles%5CIndex%20Dat  a%5C70thru75%5CTxt%5C00000005%5C20013CDS.txt&User=ANON  YMOUS&Password=anonymous&SortMethod=h%7C- &MaximumDocuments=1&FuzzyDegree=0&ImageQuality=r75g8/r75g8  /x150y150g16/i425&Display=p%7Cf&DefSeekPage=x&SearchBack=Z  yActionL&Back=ZyActionS&BackDesc=Results%20page&MaximumP  ages=1&ZyEntry=1&SeekPage=x&ZyPURL 