Local meteorological conditions must be specified when conducting a hot -spot analysis. The  typical inputs into CAL3QHC  are summarized in  Table E-6  ( Typical  Meteorological Inputs ). However, site-specific data for these parameters supersedes any default  value.  l  and  HCR  Figure E-4. Example Roadway Geometry  E-4  ( Example of Roadway Geometry ) 109  illustrates example roadway geometry for  a two-way intersection (units in feet).  Typically, total traffic volumes, turning movements, saturation flow rates, signal  length,  control  type, red/yellow/green  time  are  d etailed  in  Highway  Capacity  Model  (HCM’s)  SYNCHRO  traffic  data  reports .  Th is  information is required for  each scenario  (e.g., existing, no-build, and build), time period (e.g., AM and PM peak hours)  and  analysis year(s). This will allow the  air  quality analyst to accurately represent all free-flow and turning lane geometry f the  CAL3QHC  and/or  CAL3Q dispersion model. For PM, hourly traffic  data is neccessary.  E.2.6.2  Traffic Data  E.2.6.3  Meteorological Data  Source: EPA,  Addendum to The User's Guide to CAL3QHCR Version 2.0 (CAL3QHCR User's  Guide)  by Peter A. Eckhoff and Thomas N. Braverman, September 1995,  http://www.epa.gov/scram001/userg/regmod/cal3qhcrug.pdf.  109 Figure excerpted from EPA’s  User’s Guide to CAL3QHC Version 2.0: A Modeling Methodology for Predicting  Pollutant Concentrations Near Roadway Intersections , November 1992 [EPA-454-R-92-006],  http://www.epa.gov/ttn/scram/userg/regmod/cal3qhcug.pdf.  100$_{ }$ Table E-6. Typical Meteorological Inputs  Solvent  Typical Values  Averaging Time  30 min to 60 min  Surface Roughness coefficient  3 cm to 400 cm  Settling Velocity  0 cm/s  Deposition Velocity  0 cm/s  Wind Speed  1 m/s  Stability Class  Urban = D(4) and Rural = E(5)]  Mixing Height  1000 m  APPENDIX E$_{ }$