Criteria for  Evaluating  Project  Pollutants  Comments  CO  PM (PM$_{10 }$and PM$_{2.5}$)  applicable  Percent Diesel  Traffic  Not applicable  New highway: 8% or more  (example)  Expanded highway: Significant  increase (not defined)  PM: Explained in 71 FR 12491  Significant increase: Discuss  through interagency consultation  2. Type of  projects that  require analysis  Projects affecting  intersections that are at  LOS D, E, or F or that will  change to LOS D, E, or F.  Projects affecting intersections  that are at LOS D, E, or F with a  significant number of diesel  vehicles or that will change to  LOS D, E, or F.  PM: Focused on intersections with  a significant number of diesel  vehicles  AADT Volume  Defined by LOS  Defined by LOS  LOS is defined in terms of the  average total vehicle delay of all  movements through an  intersection.  Percent Diesel  Traffic  Not applicable  Not defined  3. Type of  projects that  require analysis  Projects in or affecting  locations, areas, or  categories of sites which  are identified in the  applicable implementation  plan  Projects in or affecting  locations, areas, or categories of  sites which are identified in the  PM$_{10 }$or PM$_{2.5 }$applicable  implementation plan  AADT Volume  May be defined in SIP  May be defined in SIP  Percent Diesel  Traffic  May be defined in SIP  May be defined in SIP  Additional Considerations  Models  Emission Models: EPA’s  MOVES or California’s  EMFAC  Dispersion Models: EPA’s  CAL3QHC  Emission Models: EPA’s  MOVES or California’s  EMFAC  Dispersion Models: EPA’s  CAL3QHCR and AERMOD  Appendix W to 40 CFR Part 51  describes EPA’s recommended  models  Receptor  Sensitivity  At least three meters from  the edge of the travel lane  Receptors should be sited as  near as five meters from a  source (e.g., the edge of a traffic  lane or a source in a terminal)  CO and PM: Per EPA’s modeling  guidance  Background  Concentration  Discussed in EPA  Guidance; generally ranges  between 2.5 and 5 parts per  million (ppm)  Considered through the use of  existing monitors in the  nonattainment or maintenance  area  Discuss through interagency  consultation; should reflect local  condition  Definition of  Project Boundary  The area substantially  affected by the project.  The area substantially affected  by the project.  Explained in 58 FR 62212  Analysis Methods  Quantitative if meet above  requirements, otherwise,  analysis may be qualitative  Quantitative if meet above  requirements, otherwise,  analysis may be qualitative  If quantitative hot-spot analysis is  not warranted, than a qualitative  analysis should be considered to  88$_{ }$ APPENDIX E$_{ }$